8000
From f4cc30b72b58ffaec8a7a10897da2cfbadc19353 Mon Sep 17 00:00:00 2001
From: Stefan Kruppa <stefan@umulmrum.de>
Date: Fri, 4 Jan 2019 17:03:46 +0100
Subject: [PATCH 001/103] Declare exceptions that are already thrown by
 implementations

---
 .../Security/Core/Encoder/PasswordEncoderInterface.php     | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Symfony/Component/Security/Core/Encoder/PasswordEncoderInterface.php b/src/Symfony/Component/Security/Core/Encoder/PasswordEncoderInterface.php
index 8c018be201bb..e0573051eb27 100644
--- a/src/Symfony/Component/Security/Core/Encoder/PasswordEncoderInterface.php
+++ b/src/Symfony/Component/Security/Core/Encoder/PasswordEncoderInterface.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Security\Core\Encoder;
 
+use Symfony\Component\Security\Core\Exception\BadCredentialsException;
+
 /**
  * PasswordEncoderInterface is the interface for all encoders.
  *
@@ -25,6 +27,9 @@ interface PasswordEncoderInterface
      * @param string $salt The salt
      *
      * @return string The encoded password
+     *
+     * @throws BadCredentialsException   If the raw password is invalid, e.g. excessively long
+     * @throws \InvalidArgumentException If the salt is invalid
      */
     public function encodePassword($raw, $salt);
 
@@ -36,6 +41,8 @@ public function encodePassword($raw, $salt);
      * @param string $salt    The salt
      *
      * @return bool true if the password is valid, false otherwise
+     *
+     * @throws \InvalidArgumentException If the salt is invalid
      */
     public function isPasswordValid($encoded, $raw, $salt);
 }

From 1976d29e014635921b61397a8e974dbe5a56ec6b Mon Sep 17 00:00:00 2001
From: Tyson Andre <tysonandre775@hotmail.com>
Date: Sat, 5 Jan 2019 10:56:34 -0500
Subject: [PATCH 002/103] Always pass $key to NullAdapter->createCacheItem

Previously, if this were called, it would throw an ArgumentCountError.
I'm assuming existing code always checks hasItem, so this bug hasn't impacted many people.
This was noticed via static analysis.

The get() method was added to NullAdapter in symfony 4.2
---
 src/Symfony/Component/Cache/Adapter/NullAdapter.php |  2 +-
 .../Cache/Tests/Adapter/NullAdapterTest.php         | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Cache/Adapter/NullAdapter.php b/src/Symfony/Component/Cache/Adapter/NullAdapter.php
index 3c88a6902a9e..cd6a937b6c40 100644
--- a/src/Symfony/Component/Cache/Adapter/NullAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/NullAdapter.php
@@ -42,7 +42,7 @@ function ($key) {
      */
     public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
     {
-        return $callback(($this->createCacheItem)());
+        return $callback(($this->createCacheItem)($key));
     }
 
     /**
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
index 73e5cad5529a..7dd08ad865fa 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
@@ -34,6 +34,19 @@ public function testGetItem()
         $this->assertNull($item->get(), "Item's value must be null when isHit is false.");
     }
 
+    public function testGet()
+    {
+        $adapter = $this->createCachePool();
+
+        $fetched = [];
+        $item = $adapter->get('myKey', function ($item) use (&$fetched) { $fetched[] = $item; });
+        $this->assertCount(1, $fetched);
+        $item = $fetched[0];
+        $this->assertFalse($item->isHit());
+        $this->assertNull($item->get(), "Item's value must be null when isHit is false.");
+        $this->assertSame('myKey', $item->getKey());
+    }
+
     public function testHasItem()
     {
         $this->assertFalse($this->createCachePool()->hasItem('key'));

From 6cce0c3001f1a49b15685cdefba0663dee57f5ce Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 6 Jan 2019 16:53:08 +0100
Subject: [PATCH 003/103] updated CHANGELOG for 3.4.21

---
 CHANGELOG-3.4.md | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/CHANGELOG-3.4.md b/CHANGELOG-3.4.md
index d0d11555c73a..7300e7f9cf88 100644
--- a/CHANGELOG-3.4.md
+++ b/CHANGELOG-3.4.md
@@ -7,6 +7,34 @@ in 3.4 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v3.4.0...v3.4.1
 
+* 3.4.21 (2019-01-06)
+
+ * bug #29494 [HttpFoundation] Fix request uri when it starts with double slashes (alquerci)
+ * bug #29679 [HttpKernel] Correctly Render Signed URIs Containing Fragments (zanbaldwin)
+ * bug #29754 Ensure final input of CommandTester works with default (Firehed)
+ * bug #29695 [Form] Do not ignore the choice groups for caching (vudaltsov)
+ * bug #29738 [Intl] handle null date and time types (xabbuh)
+ * bug #29704 [FrameworkBundle] improve errors in tests missing the BrowserKit component (xabbuh)
+ * bug #29617 [Console] Add specific replacement for help text in single command applications (codedmonkey)
+ * bug #29714 [Event Dispatcher] fixed 29703: TraceableEventDispatcher reset() callStack to null (mlievertz)
+ * bug #29597 [DI] fix reporting bindings on overriden services as unused (nicolas-grekas)
+ * bug #29639 [Yaml] detect circular references (xabbuh)
+ * bug #29411 [EventDispatcher] Revers event tracing order (ro0NL)
+ * bug #29533 Fixed public directory when configured in composer.json (alexander-schranz)
+ * bug #29619 [Console] OutputFormatter: move strtolower to createStyleFromString (ogizanagi)
+ * bug #29621 [Security] Prefer clone() over unserialize(serialize()) for user refreshment (chalasr)
+ * bug #29587 [Debug] ignore underscore vs backslash namespaces in DebugClassLoader (nicolas-grekas)
+ * bug #29584 [FrameworkBundle] fix describing routes with no controllers (nicolas-grekas)
+ * bug #29582 [DI] move RegisterServiceSubscribersPass before DecoratorServicePass (kbond)
+ * bug #29527 [TwigBridge][Form] Prevent multiple rendering of form collection prototypes (Shoplifter)
+ * bug #29571 [Yaml] ensures that the mb_internal_encoding is reset to its initial value (Jörn Lang)
+ * bug #29513 [Hackday][Serializer] Deserialization ignores argument type hint from phpdoc for array in constructor argument (karser)
+ * bug #29323 [Security] defer log message in guard authenticator (eschultz-magix)
+ * bug #29531 [Validator] Added IBAN format for Vatican City State (raulfraile)
+ * bug #29307 [Form] Filter arrays out of scalar form types (nicolas-grekas)
+ * bug #29500 [Form] filter out invalid Intl values (xabbuh)
+ * bug #29499 [Validator] Fixed grouped composite constraints (HeahDude)
+
 * 3.4.20 (2018-12-06)
 
  * security #cve-2018-19790 [Security\Http] detect bad redirect targets using backslashes (xabbuh)

From 4b6edcc4f8eb33678321441653d41fc72cb167eb Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 6 Jan 2019 16:53:38 +0100
Subject: [PATCH 004/103] update CONTRIBUTORS for 3.4.21

---
 CONTRIBUTORS.md | 80 ++++++++++++++++++++++++++++++++-----------------
 1 file changed, 53 insertions(+), 27 deletions(-)

diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index a6800f3acfb8..877cf0c79640 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -20,8 +20,8 @@ Symfony is the result of the work of many people who made the code better
  - Kris Wallsmith (kriswallsmith)
  - Ryan Weaver (weaverryan)
  - Javier Eguiluz (javier.eguiluz)
- - Grégoire Pineau (lyrixx)
  - Roland Franssen (ro0)
+ - Grégoire Pineau (lyrixx)
  - Hugo Hamon (hhamon)
  - Abdellatif Ait boudad (aitboudad)
  - Romain Neutron (romain)
@@ -55,11 +55,11 @@ Symfony is the result of the work of many people who made the code better
  - Alexander Mols (asm89)
  - Bulat Shakirzyanov (avalanche123)
  - Matthias Pigulla (mpdude)
- - Peter Rehm (rpet)
  - Jérémy DERUSSÉ (jderusse)
+ - Peter Rehm (rpet)
  - Saša Stamenković (umpirsky)
- - Pierre du Plessis (pierredup)
  - Kevin Bond (kbond)
+ - Pierre du Plessis (pierredup)
  - Henrik Bjørnskov (henrikbjorn)
  - Miha Vrhovnik
  - Diego Saint Esteben (dii3g0)
@@ -85,8 +85,9 @@ Symfony is the result of the work of many people who made the code better
  - Henrik Westphal (snc)
  - Dariusz Górecki (canni)
  - Douglas Greenshields (shieldo)
- - Dariusz Ruminski
  - Grégoire Paris (greg0ire)
+ - Valentin Udaltsov (vudaltsov)
+ - Dariusz Ruminski
  - Lee McDermott
  - Brandon Turner
  - Luis Cordova (cordoval)
@@ -98,13 +99,12 @@ Symfony is the result of the work of many people who made the code better
  - Jérôme Tamarelle (gromnan)
  - John Wards (johnwards)
  - Fran Moreno (franmomu)
- - Valentin Udaltsov (vudaltsov)
+ - gadelat (gadelat)
  - Antoine Hérault (herzult)
  - Paráda József (paradajozsef)
  - Arnaud Le Blanc (arnaud-lb)
  - Maxime STEINHAUSSER
  - Michal Piotrowski (eventhorizon)
- - gadelat (gadelat)
  - Tim Nagel (merk)
  - Brice BERNARD (brikou)
  - Baptiste Clavié (talus)
@@ -113,6 +113,7 @@ Symfony is the result of the work of many people who made the code better
  - lenar
  - Alexander Schwenn (xelaris)
  - Włodzimierz Gajda (gajdaw)
+ - Chris Wilkinson (thewilkybarkid)
  - Tomáš Votruba (tomas_votruba)
  - Peter Kokot (maastermedia)
  - Jacob Dreesen (jdreesen)
@@ -120,16 +121,15 @@ Symfony is the result of the work of many people who made the code better
  - Colin Frei
  - Adrien Brault (adrienbrault)
  - Joshua Thijssen
+ - Daniel Wehner (dawehner)
  - excelwebzone
  - Gordon Franke (gimler)
- - Chris Wilkinson (thewilkybarkid)
+ - Jérôme Vasseur (jvasseur)
  - Javier Spagnoletti (phansys)
  - Fabien Pennequin (fabienpennequin)
  - Eric GELOEN (gelo)
  - Sebastiaan Stok (sstok)
- - Jérôme Vasseur (jvasseur)
  - Lars Strojny (lstrojny)
- - Daniel Wehner (dawehner)
  - Tugdual Saunier (tucksaun)
  - Théo FIDRY (theofidry)
  - Robert Schönthal (digitalkaoz)
@@ -219,6 +219,7 @@ Symfony is the result of the work of many people who made the code better
  - Matthieu Auger (matthieuauger)
  - Oskar Stark (oskarstark)
  - Leszek Prabucki (l3l0)
+ - Fabien Bourigault (fbourigault)
  - François Zaninotto (fzaninotto)
  - Dustin Whittle (dustinwhittle)
  - jeff
@@ -231,6 +232,7 @@ Symfony is the result of the work of many people who made the code better
  - Rui Marinho (ruimarinho)
  - Eugene Wissner
  - Pascal Montoya
+ - George Mponos (gmponos)
  - Julien Brochet (mewt)
  - Leo Feyer
  - Tristan Darricau (nicofuma)
@@ -247,7 +249,6 @@ Symfony is the result of the work of many people who made the code better
  - Dariusz
  - Francois Zaninotto
  - Alexander Kotynia (olden)
- - Fabien Bourigault (fbourigault)
  - Daniel Tschinder
  - Christian Schmidt
  - Marcos Sánchez
@@ -289,8 +290,10 @@ Symfony is the result of the work of many people who made the code better
  - Diego Agulló (aeoris)
  - Andreas Schempp (aschempp)
  - jdhoek
+ - Samuel NELA (snela)
  - Massimiliano Arione (garak)
  - Bob den Otter (bopp)
+ - Frank de Jonge (frenkynet)
  - Nikita Konstantinov
  - Wodor Wodorski
  - Thomas Lallement (raziel057)
@@ -339,6 +342,7 @@ Symfony is the result of the work of many people who made the code better
  - Tiago Ribeiro (fixe)
  - Hidde Boomsma (hboomsma)
  - John Bafford (jbafford)
+ - Raul Fraile (raulfraile)
  - Adrian Rudnik (kreischweide)
  - Francesc Rosàs (frosas)
  - Romain Pierre (romain-pierre)
@@ -347,7 +351,6 @@ Symfony is the result of the work of many people who made the code better
  - janschoenherr
  - Thomas Schulz (king2500)
  - Dariusz Rumiński
- - Frank de Jonge (frenkynet)
  - Berny Cantos (xphere81)
  - Thierry Thuon (lepiaf)
  - Ricard Clau (ricardclau)
@@ -358,9 +361,11 @@ Symfony is the result of the work of many people who made the code better
  - Artur Melo (restless)
  - Matthew Lewinski (lewinski)
  - Magnus Nordlander (magnusnordlander)
+ - Zan Baldwin (zanderbaldwin)
  - Thomas Royer (cydonia7)
  - alquerci
  - Francesco Levorato
+ - Dmitrii Poddubnyi (karser)
  - Vitaliy Zakharov (zakharovvi)
  - Tobias Sjösten (tobiassjosten)
  - Gyula Sallai (salla)
@@ -368,6 +373,7 @@ Symfony is the result of the work of many people who made the code better
  - Christian Gärtner (dagardner)
  - Tomasz Kowalczyk (thunderer)
  - Artur Eshenbrener
+ - Andreas Braun
  - Damien Alexandre (damienalexandre)
  - Thomas Perez (scullwm)
  - Felix Labrecque
@@ -388,6 +394,7 @@ Symfony is the result of the work of many people who made the code better
  - Grzegorz (Greg) Zdanowski (kiler129)
  - Kirill chEbba Chebunin (chebba)
  - Greg Thornton (xdissent)
+ - Martin Hujer (martinhujer)
  - Costin Bereveanu (schniper)
  - Loïc Chardonnet (gnusat)
  - Marek Kalnik (marekkalnik)
@@ -401,7 +408,6 @@ Symfony is the result of the work of many people who made the code better
  - Nicolas Dewez (nicolas_dewez)
  - Endre Fejes
  - Tobias Naumann (tna)
- - George Mponos (gmponos)
  - Daniel Beyer
  - Shein Alexey
  - Alex Rock Ancelet (pierstoval)
@@ -444,7 +450,6 @@ Symfony is the result of the work of many people who made the code better
  - Niklas Fiekas
  - Markus Bachmann (baachi)
  - lancergr
- - Zan Baldwin
  - Mihai Stancu
  - Ivan Nikolaev (destillat)
  - Olivier Dolbeau (odolbeau)
@@ -459,7 +464,7 @@ Symfony is the result of the work of many people who made the code better
  - EdgarPE
  - Florian Pfitzer (marmelatze)
  - Asier Illarramendi (doup)
- - Andreas Braun
+ - Vlad Gregurco (vgregurco)
  - Boris Vujicic (boris.vujicic)
  - Chris Sedlmayr (catchamonkey)
  - Mateusz Sip (mateusz_sip)
@@ -470,6 +475,7 @@ Symfony is the result of the work of many people who made the code better
  - Ariel Ferrandini (aferrandini)
  - Dirk Pahl (dirkaholic)
  - cedric lombardot (cedriclombardot)
+ - Tim Goudriaan (codedmonkey)
  - Jonas Flodén (flojon)
  - Gonzalo Vilaseca (gonzalovilaseca)
  - Marcin Sikoń (marphi)
@@ -477,9 +483,11 @@ Symfony is the result of the work of many people who made the code better
  - Marek Pietrzak
  - Luc Vieillescazes (iamluc)
  - franek (franek)
+ - Alexander Schranz (alexander-schranz)
  - Christian Wahler
  - Gintautas Miselis
  - Rob Bast
+ - Roberto Espinoza (respinoza)
  - Zander Baldwin
  - Adam Harvey
  - Anton Bakai
@@ -501,7 +509,6 @@ Symfony is the result of the work of many people who made the code better
  - Sebastian Bergmann
  - Miroslav Sustek
  - Pablo Díez (pablodip)
- - Martin Hujer (martinhujer)
  - Kevin McBride
  - Sergio Santoro
  - Robin van der Vleuten (robinvdvleuten)
@@ -555,6 +562,8 @@ Symfony is the result of the work of many people who made the code better
  - Dawid Pakuła (zulusx)
  - Florian Rey (nervo)
  - Rodrigo Borrego Bernabé (rodrigobb)
+ - Emanuele Iannone
+ - Jörn Lang (j.lang)
  - Denis Gorbachev (starfall)
  - Peter van Dommelen
  - Tim van Densen
@@ -571,7 +580,6 @@ Symfony is the result of the work of many people who made the code better
  - Marcin Chyłek (songoq)
  - Ben Scott
  - Ned Schwartz
- - Samuel NELA (snela)
  - Ziumin
  - Jeremy Benoist
  - fritzmg
@@ -627,7 +635,6 @@ Symfony is the result of the work of many people who made the code better
  - Javier López (loalf)
  - Reinier Kip
  - Geoffrey Brier (geoffrey-brier)
- - Vlad Gregurco (vgregurco)
  - Vladimir Tsykun
  - Dustin Dobervich (dustin10)
  - dantleech
@@ -654,7 +661,6 @@ Symfony is the result of the work of many people who made the code better
  - Strate
  - Anton A. Sumin
  - Israel J. Carberry
- - Tim Goudriaan (codedmonkey)
  - Miquel Rodríguez Telep (mrtorrent)
  - Sergey Kolodyazhnyy (skolodyazhnyy)
  - umpirski
@@ -668,7 +674,6 @@ Symfony is the result of the work of many people who made the code better
  - Sergey (upyx)
  - Michael Devery (mickadoo)
  - Antoine Corcy
- - Dmitrii Poddubnyi (karser)
  - Sascha Grossenbacher
  - Szijarto Tamas
  - Robin Lehrmann (robinlehrmann)
@@ -676,7 +681,6 @@ Symfony is the result of the work of many people who made the code better
  - Jaroslav Kuba
  - Stephan Vock
  - Benjamin Zikarsky (bzikarsky)
- - Roberto Espinoza (respinoza)
  - Simon Schick (simonsimcity)
  - redstar504
  - Tristan Roussel
@@ -722,6 +726,7 @@ Symfony is the result of the work of many people who made the code better
  - Julien DIDIER (juliendidier)
  - Dominik Ritter (dritter)
  - Sebastian Grodzicki (sgrodzicki)
+ - Serkan Yildiz (srknyldz)
  - Jeroen van den Enden (stoefke)
  - Pascal Helfenstein
  - Anthony GRASSIOT (antograssiot)
@@ -729,7 +734,6 @@ Symfony is the result of the work of many people who made the code better
  - Pierre Rineau
  - Vladyslav Petrovych
  - Alex Xandra Albert Sim
- - Alexander Schranz (alexander-schranz)
  - Carson Full
  - Sergey Yastrebov
  - Trent Steel (trsteel88)
@@ -752,6 +756,7 @@ Symfony is the result of the work of many people who made the code better
  - 1emming
  - Leevi Graham (leevigraham)
  - Nykopol (nykopol)
+ - Tri Pham (phamuyentri)
  - Jordan Deitch
  - Casper Valdemar Poulsen
  - Josiah (josiah)
@@ -802,10 +807,12 @@ Symfony is the result of the work of many people who made the code better
  - Rafał Wrzeszcz (rafalwrzeszcz)
  - Vincent CHALAMON (vincentchalamon)
  - Reen Lokum
+ - Andreas Möller (localheinz)
  - Martin Parsiegla (spea)
  - Nguyen Xuan Quynh (xuanquynh)
  - Quentin Schuler
  - Pierre Vanliefland (pvanliefland)
+ - Roy Klutman (royklutman)
  - Sofiane HADDAG (sofhad)
  - frost-nzcr4
  - Bozhidar Hristov
@@ -825,7 +832,6 @@ Symfony is the result of the work of many people who made the code better
  - Julie Hourcade (juliehde)
  - Dmitry Parnas (parnas)
  - Paul LE CORRE
- - Emanuele Iannone
  - Tony Malzhacker
  - Mathieu MARCHOIS
  - Cyril Quintin (cyqui)
@@ -841,7 +847,6 @@ Symfony is the result of the work of many people who made the code better
  - Calin Mihai Pristavu
  - David Marín Carreño (davefx)
  - Fabien LUCAS (flucas2)
- - Jörn Lang (j.lang)
  - Omar Yepez (oyepez003)
  - Gawain Lynch (gawain)
  - mwsaz
@@ -895,7 +900,9 @@ Symfony is the result of the work of many people who made the code better
  - Gábor Tóth
  - Daniel Cestari
  - David Lima
+ - Stéphane Delprat
  - Brian Freytag (brianfreytag)
+ - Samuele Lilli (doncallisto)
  - Brunet Laurent (lbrunet)
  - Florent Viel (luxifer)
  - Mikhail Yurasov (mym)
@@ -910,7 +917,6 @@ Symfony is the result of the work of many people who made the code better
  - Rootie
  - Kyle
  - Daniel Alejandro Castro Arellano (lexcast)
- - Raul Fraile (raulfraile)
  - sensio
  - Baptiste Leduc (bleduc)
  - Sebastien Morel (plopix)
@@ -1090,6 +1096,7 @@ Symfony is the result of the work of many people who made the code better
  - Mathias STRASSER (roukmoute)
  - Thomason, James
  - Viacheslav Sychov
+ - Alexandre Quercia (alquerci)
  - Helmut Hummel (helhum)
  - Matt Brunt
  - Carlos Ortega Huetos
@@ -1108,6 +1115,7 @@ Symfony is the result of the work of many people who made the code better
  - Artem Kolesnikov (tyomo4ka)
  - Gustavo Adrian
  - Yannick
+ - Vladimir Luchaninov (luchaninov)
  - spdionis
  - rchoquet
  - gitlost
@@ -1195,6 +1203,7 @@ Symfony is the result of the work of many people who made the code better
  - Tatsuya Tsuruoka
  - Ross Tuck
  - Kévin Gomez (kevin)
+ - Mihai Nica (redecs)
  - Andrei Igna
  - azine
  - Dawid Sajdak
@@ -1235,12 +1244,14 @@ Symfony is the result of the work of many people who made the code better
  - Anthony Ferrara
  - Geoffrey Pécro (gpekz)
  - Klaas Cuvelier (kcuvelier)
+ - Flavien Knuchel (knuch)
  - Mathieu TUDISCO (mathieutu)
  - markusu49
  - Steve Frécinaux
  - Constantine Shtompel
  - Jules Lamur
  - Renato Mendes Figueiredo
+ - Eric Stern
  - ShiraNai7
  - Antal Áron (antalaron)
  - Markus Fasselt (digilist)
@@ -1280,6 +1291,7 @@ Symfony is the result of the work of many people who made the code better
  - Felds Liscia
  - Chihiro Adachi (chihiro-adachi)
  - Emanuele Panzeri (thepanz)
+ - Raphaëll Roussel
  - Tadcka
  - Beth Binkovitz
  - Gonzalo Míguez
@@ -1288,6 +1300,7 @@ Symfony is the result of the work of many people who made the code better
  - Tomaz Ahlin
  - Philip Ardery
  - Marcus Stöhr (dafish)
+ - Daniel González Zaballos (dem3trio)
  - Emmanuel Vella (emmanuel.vella)
  - Jonathan Johnson (jrjohnson)
  - Carsten Nielsen (phreaknerd)
@@ -1302,6 +1315,7 @@ Symfony is the result of the work of many people who made the code better
  - Mathieu Morlon
  - Daniel Tschinder
  - Arnaud CHASSEUX
+ - Wojciech Gorczyca
  - Rafał Muszyński (rafmus90)
  - Sébastien Decrême (sebdec)
  - Timothy Anido (xanido)
@@ -1395,6 +1409,8 @@ Symfony is the result of the work of many people who made the code better
  - Artiom
  - Jakub Simon
  - Bouke Haarsma
+ - mlievertz
+ - Enrico Schultz
  - Evert Harmeling
  - mschop
  - Alan Poulain
@@ -1500,6 +1516,7 @@ Symfony is the result of the work of many people who made the code better
  - Denis (yethee)
  - Andrew Zhilin (zhil)
  - Sjors Ottjes
+ - azjezz
  - Andy Stanberry
  - Felix Marezki
  - Normunds
@@ -1527,6 +1544,7 @@ Symfony is the result of the work of many people who made the code better
  - efeen
  - Nicolas Pion
  - Muhammed Akbulut
+ - Aaron Somi
  - Michał Dąbrowski (defrag)
  - Simone Fumagalli (hpatoio)
  - Brian Graham (incognito)
@@ -1543,6 +1561,7 @@ Symfony is the result of the work of many people who made the code better
  - Artem Lopata (bumz)
  - alex
  - Nicole Cordes
+ - Nicolas PHILIPPE
  - Roman Orlov
  - VolCh
  - Alexey Popkov
@@ -1558,6 +1577,7 @@ Symfony is the result of the work of many people who made the code better
  - Bram Van der Sype (brammm)
  - Guile (guile)
  - Julien Moulin (lizjulien)
+ - Raito Akehanareru (raito)
  - Mauro Foti (skler)
  - Yannick Warnier (ywarnier)
  - Kevin Decherf
@@ -1586,6 +1606,7 @@ Symfony is the result of the work of many people who made the code better
  - Peter Breuls
  - Chansig
  - Tischoi
+ - Andreas Hasenack
  - J Bruni
  - Fritz Michael Gschwantner
  - Alexey Prilipko
@@ -1603,6 +1624,7 @@ Symfony is the result of the work of many people who made the code better
  - Hans Nilsson (hansnilsson)
  - Andrew Marcinkevičius (ifdattic)
  - Ioana Hazsda (ioana-hazsda)
+ - Jacek Jędrzejewski (jacek.jedrzejewski)
  - Jan Marek (janmarek)
  - Mark de Haan (markdehaan)
  - Dan Patrick (mdpatrick)
@@ -1615,6 +1637,7 @@ Symfony is the result of the work of many people who made the code better
  - Kevin EMO (zarcox)
  - Alexander Zogheb
  - Rémi Blaise
+ - Nicolas Séverin
  - Joel Marcey
  - David Christmann
  - root
@@ -1688,12 +1711,14 @@ Symfony is the result of the work of many people who made the code better
  - Javan Eskander
  - Lenar Lõhmus
  - Cristian Gonzalez
+ - MusikAnimal
  - AlberT
  - hainey
  - Juan M Martínez
  - Gilles Gauthier
  - ddebree
  - Kuba Werłos
+ - Gyula Szucs
  - Tomas Liubinas
  - Alex
  - Jan Hort
@@ -1762,6 +1787,7 @@ Symfony is the result of the work of many people who made the code better
  - Ben
  - Evgeniy Tetenchuk
  - Shrey Puranik
+ - Lars Moelleken
  - dasmfm
  - Mathias Geat
  - Arnaud Buathier (arnapou)
@@ -1935,7 +1961,6 @@ Symfony is the result of the work of many people who made the code better
  - sualko
  - Bilge
  - ADmad
- - Stéphane Delprat
  - Nicolas Roudaire
  - Alfonso (afgar)
  - Andreas Forsblom (aforsblo)
@@ -1957,7 +1982,6 @@ Symfony is the result of the work of many people who made the code better
  - Damon Jones (damon__jones)
  - Łukasz Giza (destroyer)
  - Daniel Londero (dlondero)
- - Samuele Lilli (doncallisto)
  - Sebastian Landwehr (dword123)
  - Adel ELHAIBA (eadel)
  - Damián Nohales (eagleoneraptor)
@@ -2023,13 +2047,15 @@ Symfony is the result of the work of many people who made the code better
  - André Filipe Gonçalves Neves (seven)
  - Bruno Ziegler (sfcoder)
  - Andrea Giuliano (shark)
+ - Thomas Baumgartner (shoplifter)
  - Schuyler Jager (sjager)
  - Volker (skydiablo)
- - Serkan Yildiz (srknyldz)
  - Julien Sanchez (sumbobyboys)
  - Guillermo Gisinger (t3chn0r)
  - Markus Tacker (tacker)
+ - Tom Newby (tomnewbyau)
  - Andrew Clark (tqt_andrew_clark)
+ - David Lumaye (tux1124)
  - Tyler Stroud (tystr)
  - Moritz Kraft (userfriendly)
  - Víctor Mateo (victormateo)

From 32863ef27b07e4829bf565285947712ac0e46699 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 6 Jan 2019 16:53:59 +0100
Subject: [PATCH 005/103] updated VERSION for 3.4.21

---
 src/Symfony/Component/HttpKernel/Kernel.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 3d28967ed0d0..f70e246d4621 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -67,12 +67,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '3.4.21-DEV';
+    const VERSION = '3.4.21';
     const VERSION_ID = 30421;
     const MAJOR_VERSION = 3;
     const MINOR_VERSION = 4;
     const RELEASE_VERSION = 21;
-    const EXTRA_VERSION = 'DEV';
+    const EXTRA_VERSION = '';
 
     const END_OF_MAINTENANCE = '11/2020';
     const END_OF_LIFE = '11/2021';

From 7f04e558560b5aaaf19914ea58ff4230bbc4c891 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 6 Jan 2019 17:15:41 +0100
Subject: [PATCH 006/103] bumped Symfony version to 3.4.22

---
 src/Symfony/Component/HttpKernel/Kernel.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index f70e246d4621..bb546d3c516c 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -67,12 +67,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '3.4.21';
-    const VERSION_ID = 30421;
+    const VERSION = '3.4.22-DEV';
+    const VERSION_ID = 30422;
     const MAJOR_VERSION = 3;
     const MINOR_VERSION = 4;
-    const RELEASE_VERSION = 21;
-    const EXTRA_VERSION = '';
+    const RELEASE_VERSION = 22;
+    const EXTRA_VERSION = 'DEV';
 
     const END_OF_MAINTENANCE = '11/2020';
     const END_OF_LIFE = '11/2021';

From 0a7cfd365ed75ec0ae6f2fc506608b0f9ed328e7 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 6 Jan 2019 17:16:07 +0100
Subject: [PATCH 007/103] updated CHANGELOG for 4.1.10

---
 CHANGELOG-4.1.md | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/CHANGELOG-4.1.md b/CHANGELOG-4.1.md
index a547ce44c6b7..3a013e250408 100644
--- a/CHANGELOG-4.1.md
+++ b/CHANGELOG-4.1.md
@@ -7,6 +7,39 @@ in 4.1 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v4.1.0...v4.1.1
 
+* 4.1.10 (2019-01-06)
+
+ * bug #29494 [HttpFoundation] Fix request uri when it starts with double slashes (alquerci)
+ * bug #29697 [DI] Fixed wrong factory method in exception (Wojciech Gorczyca)
+ * bug #29679 [HttpKernel] Correctly Render Signed URIs Containing Fragments (zanbaldwin)
+ * bug #29754 Ensure final input of CommandTester works with default (Firehed)
+ * bug #29695 [Form] Do not ignore the choice groups for caching (vudaltsov)
+ * bug #29738 [Intl] handle null date and time types (xabbuh)
+ * bug #29708 [FrameworkBundle] access the container getting it from the kernel (xabbuh)
+ * bug #29704 [FrameworkBundle] improve errors in tests missing the BrowserKit component (xabbuh)
+ * bug #29617 [Console] Add specific replacement for help text in single command applications (codedmonkey)
+ * bug #29714 [Event Dispatcher] fixed 29703: TraceableEventDispatcher reset() callStack to null (mlievertz)
+ * bug #29597 [DI] fix reporting bindings on overriden services as unused (nicolas-grekas)
+ * bug #29639 [Yaml] detect circular references (xabbuh)
+ * bug #29626 [Routing] fix trailing slash redirections involving a trailing var (nicolas-grekas)
+ * bug #29411 [EventDispatcher] Revers event tracing order (ro0NL)
+ * bug #29533 Fixed public directory when configured in composer.json (alexander-schranz)
+ * bug #29619 [Console] OutputFormatter: move strtolower to createStyleFromString (ogizanagi)
+ * bug #29621 [Security] Prefer clone() over unserialize(serialize()) for user refreshment (chalasr)
+ * bug #29542 [Routing] fix dumping same-path routes with placeholders (nicolas-grekas)
+ * bug #29587 [Debug] ignore underscore vs backslash namespaces in DebugClassLoader (nicolas-grekas)
+ * bug #29584 [FrameworkBundle] fix describing routes with no controllers (nicolas-grekas)
+ * bug #29582 [DI] move RegisterServiceSubscribersPass before DecoratorServicePass (kbond)
+ * bug #29527 [TwigBridge][Form] Prevent multiple rendering of form collection prototypes (Shoplifter)
+ * bug #29571 [Yaml] ensures that the mb_internal_encoding is reset to its initial value (Jörn Lang)
+ * bug #29513 [Hackday][Serializer] Deserialization ignores argument type hint from phpdoc for array in constructor argument (karser)
+ * bug #29323 [Security] defer log message in guard authenticator (eschultz-magix)
+ * bug #29531 [Validator] Added IBAN format for Vatican City State (raulfraile)
+ * bug #29501 [Form] filter out invalid language values (xabbuh)
+ * bug #29307 [Form] Filter arrays out of scalar form types (nicolas-grekas)
+ * bug #29500 [Form] filter out invalid Intl values (xabbuh)
+ * bug #29499 [Validator] Fixed grouped composite constraints (HeahDude)
+
 * 4.1.9 (2018-12-06)
 
  * security #cve-2018-19790 [Security\Http] detect bad redirect targets using backslashes (xabbuh)

From 379d48695996d1190eaf1b796b333bb20438b6b2 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 6 Jan 2019 17:16:13 +0100
Subject: [PATCH 008/103] updated VERSION for 4.1.10

---
 src/Symfony/Component/HttpKernel/Kernel.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 77aafccf619a..e9ed8db3c069 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -63,12 +63,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '4.1.10-DEV';
+    const VERSION = '4.1.10';
     const VERSION_ID = 40110;
     const MAJOR_VERSION = 4;
     const MINOR_VERSION = 1;
     const RELEASE_VERSION = 10;
-    const EXTRA_VERSION = 'DEV';
+    const EXTRA_VERSION = '';
 
     const END_OF_MAINTENANCE = '01/2019';
     const END_OF_LIFE = '07/2019';

From 4ef814a19d3f49eaca35dd41d11a0da214993d3c Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 6 Jan 2019 17:18:42 +0100
Subject: [PATCH 009/103] bumped Symfony version to 4.1.11

---
 src/Symfony/Component/HttpKernel/Kernel.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index e9ed8db3c069..2df9d0d0443d 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -63,12 +63,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '4.1.10';
-    const VERSION_ID = 40110;
+    const VERSION = '4.1.11-DEV';
+    const VERSION_ID = 40111;
     const MAJOR_VERSION = 4;
     const MINOR_VERSION = 1;
-    const RELEASE_VERSION = 10;
-    const EXTRA_VERSION = '';
+    const RELEASE_VERSION = 11;
+    const EXTRA_VERSION = 'DEV';
 
     const END_OF_MAINTENANCE = '01/2019';
     const END_OF_LIFE = '07/2019';

From 40a53d555a2ee016dab03f12cff099e9d0c18778 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 6 Jan 2019 17:25:15 +0100
Subject: [PATCH 010/103] bumped Symfony version to 4.2.3

---
 src/Symfony/Component/HttpKernel/Kernel.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index d09be5a0ba2c..fd1d0c0e89cd 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -73,12 +73,12 @@ abstract class Kernel impl
8000
ements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '4.2.2';
-    const VERSION_ID = 40202;
+    const VERSION = '4.2.3-DEV';
+    const VERSION_ID = 40203;
     const MAJOR_VERSION = 4;
     const MINOR_VERSION = 2;
-    const RELEASE_VERSION = 2;
-    const EXTRA_VERSION = '';
+    const RELEASE_VERSION = 3;
+    const EXTRA_VERSION = 'DEV';
 
     const END_OF_MAINTENANCE = '07/2019';
     const END_OF_LIFE = '01/2020';

From 38a9d8b6a3d4abdcb560052889eb4d7c41743c14 Mon Sep 17 00:00:00 2001
From: Konstantin Grachev <me@grachevko.ru>
Date: Sat, 5 Jan 2019 00:04:29 +0300
Subject: [PATCH 011/103] [Bugfix] MemcachedSessionHandler::close() must close
 connection

---
 .../Session/Storage/Handler/MemcachedSessionHandler.php     | 2 +-
 .../Session/Storage/Handler/MemcachedSessionHandlerTest.php | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
index 61a7afd90400..8bcd75cc6e68 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
@@ -62,7 +62,7 @@ public function __construct(\Memcached $memcached, array $options = array())
      */
     public function close()
     {
-        return true;
+        return $this->memcached->quit();
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
index 2a114801056c..422293084380 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
@@ -63,6 +63,12 @@ public function testOpenSession()
 
     public function testCloseSession()
     {
+        $this->memcached
+            ->expects($this->once())
+            ->method('quit')
+            ->will($this->returnValue(true))
+        ;
+
         $this->assertTrue($this->storage->close());
     }
 

From 84e72e0061d3fcff90039ee5f19a8774a1593df7 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Mon, 7 Jan 2019 21:28:45 +0100
Subject: [PATCH 012/103] [fabbot] enable short arrays

---
 .php_cs.dist | 1 -
 1 file changed, 1 deletion(-)

diff --git a/.php_cs.dist b/.php_cs.dist
index f393c2b6ddff..b4f990aa95ff 100644
--- a/.php_cs.dist
+++ b/.php_cs.dist
@@ -10,7 +10,6 @@ return PhpCsFixer\Config::create()
         '@Symfony:risky' => true,
         '@PHPUnit48Migration:risky' => true,
         'php_unit_no_expectation_annotation' => false, // part of `PHPUnitXYMigration:risky` ruleset, to be enabled when PHPUnit 4.x support will be dropped, as we don't want to rewrite exceptions handling twice
-        'array_syntax' => array('syntax' => 'long'),
         'fopen_flags' => false,
         'ordered_imports' => true,
         'protected_to_private' => false,

From 3245cb48dad2ce24335b47de721e534f9e3861dd Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Tue, 8 Jan 2019 09:38:39 +0100
Subject: [PATCH 013/103] enabled short array notation in CS

---
 .php_cs.dist | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.php_cs.dist b/.php_cs.dist
index b4f990aa95ff..14762d37812d 100644
--- a/.php_cs.dist
+++ b/.php_cs.dist
@@ -10,6 +10,7 @@ return PhpCsFixer\Config::create()
         '@Symfony:risky' => true,
         '@PHPUnit48Migration:risky' => true,
         'php_unit_no_expectation_annotation' => false, // part of `PHPUnitXYMigration:risky` ruleset, to be enabled when PHPUnit 4.x support will be dropped, as we don't want to rewrite exceptions handling twice
+        'array_syntax' => array('syntax' => 'short'),
         'fopen_flags' => false,
         'ordered_imports' => true,
         'protected_to_private' => false,

From 64a65e9cd1baca6e8cf4a745322fb3b33e569734 Mon Sep 17 00:00:00 2001
From: Tom Van Looy <tom@ctors.net>
Date: Tue, 8 Jan 2019 14:01:58 +0100
Subject: [PATCH 014/103] Fix docs

symfony documentation tells people to pass null, and it is the default, but the method docs don't allow it so static analyzers complain about it (spotted by phan)
---
 src/Symfony/Component/Console/Command/Command.php   | 2 +-
 src/Symfony/Component/Console/Input/InputOption.php | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Symfony/Component/Console/Command/Command.php b/src/Symfony/Component/Console/Command/Command.php
index cd9db7603c67..3b4ba36ea56a 100644
--- a/src/Symfony/Component/Console/Command/Command.php
+++ b/src/Symfony/Component/Console/Command/Command.php
@@ -388,7 +388,7 @@ public function addArgument($name, $mode = null, $description = '', $default = n
      * Adds an option.
      *
      * @param string                        $name        The option name
-     * @param string|array                  $shortcut    The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
+     * @param string|array|null             $shortcut    The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
      * @param int|null                      $mode        The option mode: One of the InputOption::VALUE_* constants
      * @param string                        $description A description text
      * @param string|string[]|int|bool|null $default     The default value (must be null for InputOption::VALUE_NONE)
diff --git a/src/Symfony/Component/Console/Input/InputOption.php b/src/Symfony/Component/Console/Input/InputOption.php
index 20c9d2ea5929..d30e571bf4b8 100644
--- a/src/Symfony/Component/Console/Input/InputOption.php
+++ b/src/Symfony/Component/Console/Input/InputOption.php
@@ -34,7 +34,7 @@ class InputOption
 
     /**
      * @param string                        $name        The option name
-     * @param string|array                  $shortcut    The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
+     * @param string|array|null             $shortcut    The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
      * @param int|null                      $mode        The option mode: One of the VALUE_* constants
      * @param string                        $description A description text
      * @param string|string[]|int|bool|null $default     The default value (must be null for self::VALUE_NONE)
@@ -89,7 +89,7 @@ public function __construct($name, $shortcut = null, $mode = null, $description
     /**
      * Returns the option shortcut.
      *
-     * @return string The shortcut
+     * @return string|null The shortcut
      */
     public function getShortcut()
     {

From 59a4dc609d7b33bf351d86bec2eb4795385cd6e1 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Thu, 10 Jan 2019 09:15:17 +0100
Subject: [PATCH 015/103] account for the short array syntax in Twig

---
 src/Symfony/Bridge/Twig/Node/DumpNode.php            |  6 +++---
 .../Bridge/Twig/Node/SearchAndRenderBlockNode.php    |  2 +-
 src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php  |  8 ++++----
 src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php |  4 ++--
 .../Twig/Tests/Node/SearchAndRenderBlockNodeTest.php | 12 ++++++------
 src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php |  2 +-
 src/Symfony/Bridge/Twig/composer.json                |  2 +-
 7 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/src/Symfony/Bridge/Twig/Node/DumpNode.php b/src/Symfony/Bridge/Twig/Node/DumpNode.php
index d820d75cc7db..b4f1772bdeaa 100644
--- a/src/Symfony/Bridge/Twig/Node/DumpNode.php
+++ b/src/Symfony/Bridge/Twig/Node/DumpNode.php
@@ -44,7 +44,7 @@ public function compile(Compiler $compiler)
         if (!$this->hasNode('values')) {
             // remove embedded templates (macros) from the context
             $compiler
-                ->write(sprintf('$%svars = array();'."\n", $this->varPrefix))
+                ->write(sprintf('$%svars = [];'."\n", $this->varPrefix))
                 ->write(sprintf('foreach ($context as $%1$skey => $%1$sval) {'."\n", $this->varPrefix))
                 ->indent()
                 ->write(sprintf('if (!$%sval instanceof \Twig\Template) {'."\n", $this->varPrefix))
@@ -65,7 +65,7 @@ public function compile(Compiler $compiler)
         } else {
             $compiler
                 ->addDebugInfo($this)
-                ->write('\Symfony\Component\VarDumper\VarDumper::dump(array('."\n")
+                ->write('\Symfony\Component\VarDumper\VarDumper::dump(['."\n")
                 ->indent();
             foreach ($values as $node) {
                 $compiler->write('');
@@ -80,7 +80,7 @@ public function compile(Compiler $compiler)
             }
             $compiler
                 ->outdent()
-                ->write("));\n");
+                ->write("]);\n");
         }
 
         $compiler
diff --git a/src/Symfony/Bridge/Twig/Node/SearchAndRenderBlockNode.php b/src/Symfony/Bridge/Twig/Node/SearchAndRenderBlockNode.php
index 224e1d60e0aa..09262b8ca8ee 100644
--- a/src/Symfony/Bridge/Twig/Node/SearchAndRenderBlockNode.php
+++ b/src/Symfony/Bridge/Twig/Node/SearchAndRenderBlockNode.php
@@ -100,7 +100,7 @@ public function compile(Compiler $compiler)
                         // If not, add it to the array at runtime.
                         $compiler->raw('(twig_test_empty($_label_ = ');
                         $compiler->subcompile($label);
-                        $compiler->raw(') ? array() : array("label" => $_label_))');
+                        $compiler->raw(') ? [] : ["label" => $_label_])');
                     }
                 }
             }
diff --git a/src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php
index 7f8737a3af6e..a6108ba79e88 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php
@@ -29,7 +29,7 @@ public function testNoVar()
 
         $expected = <<<'EOTXT'
 if ($this->env->isDebug()) {
-    $barvars = array();
+    $barvars = [];
     foreach ($context as $barkey => $barval) {
         if (!$barval instanceof \Twig\Template) {
             $barvars[$barkey] = $barval;
@@ -53,7 +53,7 @@ public function testIndented()
 
         $expected = <<<'EOTXT'
     if ($this->env->isDebug()) {
-        $barvars = array();
+        $barvars = [];
         foreach ($context as $barkey => $barval) {
             if (!$barval instanceof \Twig\Template) {
                 $barvars[$barkey] = $barval;
@@ -109,10 +109,10 @@ public function testMultiVars()
         $expected = <<<'EOTXT'
 if ($this->env->isDebug()) {
     // line 7
-    \Symfony\Component\VarDumper\VarDumper::dump(array(
+    \Symfony\Component\VarDumper\VarDumper::dump([
         "foo" => %foo%,
         "bar" => %bar%,
-    ));
+    ]);
 }
 
 EOTXT;
diff --git a/src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php
index 1f7f6322bdef..97056a771dbd 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php
@@ -61,7 +61,7 @@ public function testCompile()
 
         $this->assertEquals(
             sprintf(
-                '$this->env->getRuntime("Symfony\\\\Component\\\\Form\\\\FormRenderer")->setTheme(%s, array(0 => "tpl1", 1 => "tpl2"), true);',
+                '$this->env->getRuntime("Symfony\\\\Component\\\\Form\\\\FormRenderer")->setTheme(%s, [0 => "tpl1", 1 => "tpl2"], true);',
                 $this->getVariableGetter('form')
              ),
             trim($compiler->compile($node)->getSource())
@@ -71,7 +71,7 @@ public function testCompile()
 
         $this->assertEquals(
             sprintf(
-                '$this->env->getRuntime("Symfony\\\\Component\\\\Form\\\\FormRenderer")->setTheme(%s, array(0 => "tpl1", 1 => "tpl2"), false);',
+                '$this->env->getRuntime("Symfony\\\\Component\\\\Form\\\\FormRenderer")->setTheme(%s, [0 => "tpl1", 1 => "tpl2"], false);',
                 $this->getVariableGetter('form')
              ),
             trim($compiler->compile($node)->getSource())
diff --git a/src/Symfony/Bridge/Twig/Tests/Node/SearchAndRenderBlockNodeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/SearchAndRenderBlockNodeTest.php
index 4f66406a8ae3..d86c0ee38aae 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/SearchAndRenderBlockNodeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/SearchAndRenderBlockNodeTest.php
@@ -58,7 +58,7 @@ public function testCompileWidgetWithVariables()
 
         $this->assertEquals(
             sprintf(
-                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'widget\', array("foo" => "bar"))',
+                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'widget\', ["foo" => "bar"])',
                 $this->getVariableGetter('form')
             ),
             trim($compiler->compile($node)->getSource())
@@ -78,7 +78,7 @@ public function testCompileLabelWithLabel()
 
         $this->assertEquals(
             sprintf(
-                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', array("label" => "my label"))',
+                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', ["label" => "my label"])',
                 $this->getVariableGetter('form')
             ),
             trim($compiler->compile($node)->getSource())
@@ -168,7 +168,7 @@ public function testCompileLabelWithAttributes()
         // https://github.com/symfony/symfony/issues/5029
         $this->assertEquals(
             sprintf(
-                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', array("foo" => "bar"))',
+                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', ["foo" => "bar"])',
                 $this->getVariableGetter('form')
             ),
             trim($compiler->compile($node)->getSource())
@@ -194,7 +194,7 @@ public function testCompileLabelWithLabelAndAttributes()
 
         $this->assertEquals(
             sprintf(
-                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', array("foo" => "bar", "label" => "value in argument"))',
+                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', ["foo" => "bar", "label" => "value in argument"])',
                 $this->getVariableGetter('form')
             ),
             trim($compiler->compile($node)->getSource())
@@ -225,7 +225,7 @@ public function testCompileLabelWithLabelThatEvaluatesToNull()
         // https://github.com/symfony/symfony/issues/5029
         $this->assertEquals(
             sprintf(
-                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', (twig_test_empty($_label_ = ((true) ? (null) : (null))) ? array() : array("label" => $_label_)))',
+                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', (twig_test_empty($_label_ = ((true) ? (null) : (null))) ? [] : ["label" => $_label_]))',
                 $this->getVariableGetter('form')
             ),
             trim($compiler->compile($node)->getSource())
@@ -262,7 +262,7 @@ public function testCompileLabelWithLabelThatEvaluatesToNullAndAttributes()
         // https://github.com/symfony/symfony/issues/5029
         $this->assertEquals(
             sprintf(
-                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', array("foo" => "bar", "label" => "value in attributes") + (twig_test_empty($_label_ = ((true) ? (null) : (null))) ? array() : array("label" => $_label_)))',
+                '$this->env->getRuntime(\'Symfony\Component\Form\FormRenderer\')->searchAndRenderBlock(%s, \'label\', ["foo" => "bar", "label" => "value in attributes"] + (twig_test_empty($_label_ = ((true) ? (null) : (null))) ? [] : ["label" => $_label_]))',
                 $this->getVariableGetter('form')
             ),
             trim($compiler->compile($node)->getSource())
diff --git a/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
index dd4c7136c138..6e61a7d66a58 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
@@ -34,7 +34,7 @@ public function testCompileStrict()
 
         $this->assertEquals(
             sprintf(
-                'echo $this->env->getExtension(\'Symfony\Bridge\Twig\Extension\TranslationExtension\')->getTranslator()->trans("trans %%var%%", array_merge(array("%%var%%" => %s), %s), "messages");',
+                'echo $this->env->getExtension(\'Symfony\Bridge\Twig\Extension\TranslationExtension\')->getTranslator()->trans("trans %%var%%", array_merge(["%%var%%" => %s], %s), "messages");',
                 $this->getVariableGetterWithoutStrictCheck('var'),
                 $this->getVariableGetterWithStrictCheck('foo')
              ),
diff --git a/src/Symfony/Bridge/Twig/composer.json b/src/Symfony/Bridge/Twig/composer.json
index 581dff710243..6234fda14967 100644
--- a/src/Symfony/Bridge/Twig/composer.json
+++ b/src/Symfony/Bridge/Twig/composer.json
@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": "^5.5.9|>=7.0.8",
-        "twig/twig": "^1.35|^2.4.4"
+        "twig/twig": "^1.36.1|^2.6.1"
     },
     "require-dev": {
         "symfony/asset": "~2.8|~3.0|~4.0",

From ada2d83b67072d551aca0c31faaad1a60e66e842 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 10 Jan 2019 16:10:12 +0100
Subject: [PATCH 016/103] Fix SwiftMailerHandler to support Monolog's latest
 reset functionality

---
 src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php b/src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php
index fcbd98ac7dc6..c912614a2abb 100644
--- a/src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php
@@ -59,6 +59,14 @@ protected function send($content, array $records)
         }
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        $this->flushMemorySpool();
+    }
+
     /**
      * Flushes the mail queue if a memory spool is used.
      */

From 8266262c9cd0edfce7fcf0088485c97e8eee4464 Mon Sep 17 00:00:00 2001
From: Valentin <udaltsov.valentin@gmail.com>
Date: Fri, 11 Jan 2019 17:00:45 +0300
Subject: [PATCH 017/103] Fixed exception wording

---
 .../Validator/ContainerConstraintValidatorFactory.php         | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Validator/ContainerConstraintValidatorFactory.php b/src/Symfony/Component/Validator/ContainerConstraintValidatorFactory.php
index 43c8a0d7cb6d..62e5530dc23c 100644
--- a/src/Symfony/Component/Validator/ContainerConstraintValidatorFactory.php
+++ b/src/Symfony/Component/Validator/ContainerConstraintValidatorFactory.php
@@ -28,7 +28,7 @@ class ContainerConstraintValidatorFactory implements ConstraintValidatorFactoryI
     public function __construct(ContainerInterface $container)
     {
         $this->container = $container;
-        $this->validators = array();
+        $this->validators = [];
     }
 
     /**
@@ -46,7 +46,7 @@ public function getInstance(Constraint $constraint)
                 $this->validators[$name] = $this->container->get($name);
             } else {
                 if (!class_exists($name)) {
-                    throw new ValidatorException(sprintf('Constraint validator "%s" does not exist or it is not enabled. Check the "validatedBy" method in your constraint class "%s".', $name, \get_class($constraint)));
+                    throw new ValidatorException(sprintf('Constraint validator "%s" does not exist or is not enabled. Check the "validatedBy" method in your constraint class "%s".', $name, \get_class($constraint)));
                 }
 
                 $this->validators[$name] = new $name();

From b3e17d2101530092f96ff9c1967ab2b5f556b90a Mon Sep 17 00:00:00 2001
From: Mikhail Marynich <mmarynich-ext@lequipe.fr>
Date: Fri, 11 Jan 2019 16:53:30 +0100
Subject: [PATCH 018/103] Revert "bug #29597 [DI] fix reporting bindings on
 overriden services as unused (nicolas-grekas)"

This reverts commit 44e9a91f306169aff0573bcb8380e3d5f9c912d0, reversing
changes made to 91b28ff0817e33f7430084ef4e4b431c6648989d.
---
 .../Compiler/ResolveBindingsPass.php          |  2 -
 .../DependencyInjection/ContainerBuilder.php  | 46 +++----------------
 .../Compiler/ResolveBindingsPassTest.php      | 18 --------
 .../ResolveChildDefinitionsPassTest.php       |  2 +-
 .../Tests/ContainerBuilderTest.php            |  2 +-
 .../Fixtures/config/instanceof.expected.yml   |  6 +--
 .../Fixtures/config/prototype.expected.yml    | 10 ++--
 7 files changed, 17 insertions(+), 69 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveBindingsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveBindingsPass.php
index 166e23441c62..bcf265ab4723 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveBindingsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveBindingsPass.php
@@ -34,8 +34,6 @@ class ResolveBindingsPass extends AbstractRecursivePass
      */
     public function process(ContainerBuilder $container)
     {
-        $this->usedBindings = $container->getRemovedBindingIds();
-
         try {
             parent::process($container);
 
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 93239a703db5..5fe6f2ae6fdf 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -123,8 +123,6 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
 
     private $removedIds = array();
 
-    private $removedBindingIds = array();
-
     private static $internalTypes = array(
         'int' => true,
         'float' => true,
@@ -533,8 +531,7 @@ public function set($id, $service)
             throw new BadMethodCallException(sprintf('Setting service "%s" for an unknown or non-synthetic service definition on a compiled container is not allowed.', $id));
         }
 
-        $this->removeId($id);
-        unset($this->removedIds[$id]);
+        unset($this->definitions[$id], $this->aliasDefinitions[$id], $this->removedIds[$id]);
 
         parent::set($id, $service);
     }
@@ -547,7 +544,8 @@ public function set($id, $service)
     public function removeDefinition($id)
     {
         if (isset($this->definitions[$id = $this->normalizeId($id)])) {
-            $this->removeId($id);
+            unset($this->definitions[$id]);
+            $this->removedIds[$id] = true;
         }
     }
 
@@ -878,8 +876,7 @@ public function setAlias($alias, $id)
             throw new InvalidArgumentException(sprintf('An alias can not reference itself, got a circular reference on "%s".', $alias));
         }
 
-        $this->removeId($alias);
-        unset($this->removedIds[$alias]);
+        unset($this->definitions[$alias], $this->removedIds[$alias]);
 
         return $this->aliasDefinitions[$alias] = $id;
     }
@@ -892,7 +889,8 @@ public function setAlias($alias, $id)
     public function removeAlias($alias)
     {
         if (isset($this->aliasDefinitions[$alias = $this->normalizeId($alias)])) {
-            $this->removeId($alias);
+            unset($this->aliasDefinitions[$alias]);
+            $this->removedIds[$alias] = true;
         }
     }
 
@@ -1021,8 +1019,7 @@ public function setDefinition($id, Definition $definition)
 
         $id = $this->normalizeId($id);
 
-        $this->removeId($id);
-        unset($this->removedIds[$id]);
+        unset($this->aliasDefinitions[$id], $this->removedIds[$id]);
 
         return $this->definitions[$id] = $definition;
     }
@@ -1555,18 +1552,6 @@ public static function getInitializedConditionals($value)
         return $services;
     }
 
-    /**
-     * Gets removed binding ids.
-     *
-     * @return array
-     *
-     * @internal
-     */
-    public function getRemovedBindingIds()
-    {
-        return $this->removedBindingIds;
-    }
-
     /**
      * Computes a reasonably unique hash of a value.
      *
@@ -1671,21 +1656,4 @@ private function inVendors($path)
 
         return false;
     }
-
-    private function removeId($id)
-    {
-        $this->removedIds[$id] = true;
-        unset($this->aliasDefinitions[$id]);
-
-        if (!isset($this->definitions[$id])) {
-            return;
-        }
-
-        foreach ($this->definitions[$id]->getBindings() as $binding) {
-            list(, $identifier) = $binding->getValues();
-            $this->removedBindingIds[$identifier] = true;
-        }
-
-        unset($this->definitions[$id]);
-    }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
index 24909e1155fb..d59b95af5c40 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
@@ -111,22 +111,4 @@ public function testScalarSetter()
 
         $this->assertEquals(array(array('setDefaultLocale', array('fr'))), $definition->getMethodCalls());
     }
-
-    public function testOverriddenBindings()
-    {
-        $container = new ContainerBuilder();
-
-        $binding = new BoundArgument('bar');
-
-        $container->register('foo', 'stdClass')
-            ->setBindings(array('$foo' => clone $binding));
-        $container->register('bar', 'stdClass')
-            ->setBindings(array('$foo' => clone $binding));
-
-        $container->register('foo', 'stdClass');
-
-        (new ResolveBindingsPass())->process($container);
-
-        $this->assertInstanceOf('stdClass', $container->get('foo'));
-    }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
index 863f2833e5f7..1575bd7b0775 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
@@ -434,7 +434,7 @@ protected function process(ContainerBuilder $container)
 
     /**
      * @expectedException \Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException
-     * @expectedExceptionMessageRegExp /^Circular reference detected for service "a", path: "a -> c -> b -> a"./
+     * @expectedExceptionMessageRegExp /^Circular reference detected for service "c", path: "c -> b -> a -> c"./
      */
     public function testProcessDetectsChildDefinitionIndirectCircularReference()
     {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
index 354b44187d6b..0bf1befa3f84 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
@@ -559,7 +559,7 @@ public function testMerge()
         $config->setDefinition('baz', new Definition('BazClass'));
         $config->setAlias('alias_for_foo', 'foo');
         $container->merge($config);
-        $this->assertEquals(array('foo', 'bar', 'service_container', 'baz'), array_keys($container->getDefinitions()), '->merge() merges definitions already defined ones');
+        $this->assertEquals(array('service_container', 'foo', 'bar', 'baz'), array_keys($container->getDefinitions()), '->merge() merges definitions already defined ones');
 
         $aliases = $container->getAliases();
         $this->assertArrayHasKey('alias_for_foo', $aliases);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/instanceof.expected.yml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/instanceof.expected.yml
index 9f0bfbba78a2..b12a304221dd 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/instanceof.expected.yml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/instanceof.expected.yml
@@ -4,9 +4,6 @@ services:
         class: Symfony\Component\DependencyInjection\ContainerInterface
         public: true
         synthetic: true
-    foo:
-        class: App\FooService
-        public: true
     Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo:
         class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo
         public: true
@@ -19,3 +16,6 @@ services:
 
         shared: false
         configurator: c
+    foo:
+        class: App\FooService
+        public: true
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype.expected.yml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype.expected.yml
index 0af4d530a087..ebfe087d779c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype.expected.yml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype.expected.yml
@@ -4,22 +4,22 @@ services:
         class: Symfony\Component\DependencyInjection\ContainerInterface
         public: true
         synthetic: true
-    Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\Bar:
-        class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\Bar
+    Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo:
+        class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo
         public: true
         tags:
             - { name: foo }
             - { name: baz }
         deprecated: '%service_id%'
-        lazy: true
         arguments: [1]
         factory: f
-    Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo:
-        class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo
+    Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\Bar:
+        class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\Bar
         public: true
         tags:
             - { name: foo }
             - { name: baz }
         deprecated: '%service_id%'
+        lazy: true
         arguments: [1]
         factory: f

From d6cfde94b433b6a4ecf7926598a3c2ad09d1493f Mon Sep 17 00:00:00 2001
From: Robin Chalas <robin.chalas@elao.com>
Date: Sun, 6 Jan 2019 20:58:12 +0100
Subject: [PATCH 019/103] [Security] Do not mix usage of password_*() functions
 and sodium_*() ones

---
 .../Security/Core/Encoder/Argon2iPasswordEncoder.php          | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Security/Core/Encoder/Argon2iPasswordEncoder.php b/src/Symfony/Component/Security/Core/Encoder/Argon2iPasswordEncoder.php
index 0362ccc4a277..6f8a43b01453 100644
--- a/src/Symfony/Component/Security/Core/Encoder/Argon2iPasswordEncoder.php
+++ b/src/Symfony/Component/Security/Core/Encoder/Argon2iPasswordEncoder.php
@@ -60,7 +60,9 @@ public function encodePassword($raw, $salt)
      */
     public function isPasswordValid($encoded, $raw, $salt)
     {
-        if (\PHP_VERSION_ID >= 70200 && \defined('PASSWORD_ARGON2I')) {
+        // If $encoded was created via "sodium_crypto_pwhash_str()", the hashing algorithm may be "argon2id" instead of "argon2i".
+        // In this case, "password_verify()" cannot be used.
+        if (\PHP_VERSION_ID >= 70200 && \defined('PASSWORD_ARGON2I') && (false === strpos($encoded, '$argon2id$'))) {
             return !$this->isPasswordTooLong($raw) && password_verify($ra
10000
w, $encoded);
         }
         if (\function_exists('sodium_crypto_pwhash_str_verify')) {

From 4db43f3e769bfee55bc1062db6bb710a62741360 Mon Sep 17 00:00:00 2001
From: Robin Chalas <robin.chalas@elao.com>
Date: Sat, 12 Jan 2019 12:06:42 +0100
Subject: [PATCH 020/103] [Console] Fix composer.json suggest/provide

---
 src/Symfony/Component/Console/composer.json | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Console/composer.json b/src/Symfony/Component/Console/composer.json
index ab348abd8d63..d994a460451c 100644
--- a/src/Symfony/Component/Console/composer.json
+++ b/src/Symfony/Component/Console/composer.json
@@ -28,11 +28,14 @@
         "symfony/process": "~3.3|~4.0",
         "psr/log": "~1.0"
     },
+    "provide": {
+        "psr/log-implementation": "1.0"
+    },
     "suggest": {
         "symfony/event-dispatcher": "",
         "symfony/lock": "",
         "symfony/process": "",
-        "psr/log-implementation": "For using the console logger"
+        "psr/log": "For using the console logger"
     },
     "conflict": {
         "symfony/dependency-injection": "<3.4",

From 4f690a31c62f9efed13392f8c8154adfd41e020c Mon Sep 17 00:00:00 2001
From: Thomas Calvet <calvet.thomas@gmail.com>
Date: Thu, 10 Jan 2019 09:28:12 +0100
Subject: [PATCH 021/103] [DebugClassLoader] Readd findFile() method

---
 src/Symfony/Component/Debug/DebugClassLoader.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index dd2f169ce4f9..c5b78c90f294 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -124,6 +124,11 @@ public static function disable()
         }
     }
 
+    public function findFile($class): ?string
+    {
+        return $this->isFinder ? $this->classLoader[0]->findFile($class) ?: null : null;
+    }
+
     /**
      * Loads the given class or interface.
      *

From c7410bef29034f2c876e6e7900e206b6c4132dd6 Mon Sep 17 00:00:00 2001
From: Gordienko Vladislav <gordienkovladis@gmail.com>
Date: Sun, 6 Jan 2019 11:23:18 +0500
Subject: [PATCH 022/103] Component CssSelector tests

---
 .../Tests/XPath/TranslatorTest.php            | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php b/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
index 610458297ece..ae961d48c703 100644
--- a/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
@@ -12,8 +12,13 @@
 namespace Symfony\Component\CssSelector\Tests\XPath;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
+use Symfony\Component\CssSelector\Node\ElementNode;
+use Symfony\Component\CssSelector\Node\FunctionNode;
+use Symfony\Component\CssSelector\Parser\Parser;
 use Symfony\Component\CssSelector\XPath\Extension\HtmlExtension;
 use Symfony\Component\CssSelector\XPath\Translator;
+use Symfony\Component\CssSelector\XPath\XPathExpr;
 
 class TranslatorTest extends TestCase
 {
@@ -31,6 +36,61 @@ public function testCssToXPath($css, $xpath)
         $this->assertEquals($xpath, $translator->cssToXPath($css, ''));
     }
 
+    public function testCssToXPathPseudoElement()
+    {
+        $translator = new Translator();
+        $translator->registerExtension(new HtmlExtension($translator));
+        $this->expectException(ExpressionErrorException::class);
+        $translator->cssToXPath('e::first-line');
+    }
+
+    public function testGetExtensionNotExistsExtension()
+    {
+        $translator = new Translator();
+        $translator->registerExtension(new HtmlExtension($translator));
+        $this->expectException(ExpressionErrorException::class);
+        $translator->getExtension('fake');
+    }
+
+    public function testAddCombinationNotExistsExtension()
+    {
+        $translator = new Translator();
+        $translator->registerExtension(new HtmlExtension($translator));
+        $this->expectException(ExpressionErrorException::class);
+        $parser = new Parser();
+        $xpath = $parser->parse('*')[0];
+        $combinedXpath = $parser->parse('*')[0];
+        $translator->addCombination('fake', $xpath, $combinedXpath);
+    }
+
+    public function testAddFunctionNotExistsFunction()
+    {
+        $translator = new Translator();
+        $translator->registerExtension(new HtmlExtension($translator));
+        $xpath = new XPathExpr();
+        $function = new FunctionNode(new ElementNode(), 'fake');
+        $this->expectException(ExpressionErrorException::class);
+        $translator->addFunction($xpath, $function);
+    }
+
+    public function testAddPseudoClassNotExistsClass()
+    {
+        $translator = new Translator();
+        $translator->registerExtension(new HtmlExtension($translator));
+        $xpath = new XPathExpr();
+        $this->expectException(ExpressionErrorException::class);
+        $translator->addPseudoClass($xpath, 'fake');
+    }
+
+    public function testAddAttributeMatchingClassNotExistsClass()
+    {
+        $translator = new Translator();
+        $translator->registerExtension(new HtmlExtension($translator));
+        $xpath = new XPathExpr();
+        $this->expectException(ExpressionErrorException::class);
+        $translator->addAttributeMatching($xpath, '', '', '');
+    }
+
     /** @dataProvider getXmlLangTestData */
     public function testXmlLang($css, array $elementsId)
     {

From 8887f76b64f8ba2ab296deec9b4c4422e704744f Mon Sep 17 00:00:00 2001
From: Vladimir Reznichenko <kalessil@gmail.com>
Date: Wed, 2 Jan 2019 12:31:17 +0100
Subject: [PATCH 023/103] SCA: minor code tweaks

---
 .../DependencyInjection/FrameworkExtension.php                | 4 +---
 .../Messenger/DataCollector/MessengerDataCollector.php        | 4 +---
 .../Component/Serializer/Mapping/Loader/XmlFileLoader.php     | 3 ++-
 3 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index c42f91c40888..293b52dc4acc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -558,9 +558,7 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             $metadataStoreDefinition->replaceArgument(2, $transitionsMetadataDefinition);
 
             // Create places
-            $places = array_map(function (array $place) {
-                return $place['name'];
-            }, $workflow['places']);
+            $places = array_column($workflow['places'], 'name');
 
             // Create a Definition
             $definitionDefinition = new Definition(Workflow\Definition::class);
diff --git a/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php b/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
index 1cffd74a2f1c..7c5a81252fe8 100644
--- a/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
+++ b/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
@@ -62,9 +62,7 @@ public function lateCollect()
         });
 
         // Keep the messages clones only
-        $this->data['messages'] = array_map(function (array $item): Data {
-            return $item[0];
-        }, $messages);
+        $this->data['messages'] = array_column($messages, 0);
     }
 
     /**
diff --git a/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php b/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
index eec766f91d53..9a4aba54a140 100644
--- a/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
@@ -71,7 +71,8 @@ public function loadClassMetadata(ClassMetadataInterface $classMetadata)
             if (isset($xml->{'discriminator-map'})) {
                 $mapping = array();
                 foreach ($xml->{'discriminator-map'}->mapping as $element) {
-                    $mapping[(string) $element->attributes()->type] = (string) $element->attributes()->class;
+                    $elementAttributes = $element->attributes();
+                    $mapping[(string) $elementAttributes->type] = (string) $elementAttributes->class;
                 }
 
                 $classMetadata->setClassDiscriminatorMapping(new ClassDiscriminatorMapping(

From 1f31471ffef1ebb651d4c61ef5412595ab1ac36f Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Mon, 14 Jan 2019 09:43:48 +0100
Subject: [PATCH 024/103] remove return type hint for PHP 5 compatibility

---
 src/Symfony/Component/Debug/DebugClassLoader.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index c5b78c90f294..88e4890ead7c 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -124,7 +124,10 @@ public static function disable()
         }
     }
 
-    public function findFile($class): ?string
+    /**
+     * @return string|null
+     */
+    public function findFile($class)
     {
         return $this->isFinder ? $this->classLoader[0]->findFile($class) ?: null : null;
     }

From 189da2252866407b798b6a0ca9a2d63d55b52946 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Mon, 14 Jan 2019 10:04:16 +0100
Subject: [PATCH 025/103] fix compatibility with PHPUnit 4.8

---
 .../Tests/XPath/TranslatorTest.php            | 25 +++++++++++++------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php b/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
index ae961d48c703..92957df5f12e 100644
--- a/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
@@ -12,7 +12,6 @@
 namespace Symfony\Component\CssSelector\Tests\XPath;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
 use Symfony\Component\CssSelector\Node\ElementNode;
 use Symfony\Component\CssSelector\Node\FunctionNode;
 use Symfony\Component\CssSelector\Parser\Parser;
@@ -36,58 +35,70 @@ public function testCssToXPath($css, $xpath)
         $this->assertEquals($xpath, $translator->cssToXPath($css, ''));
     }
 
+    /**
+     * @expectedException \Symfony\Component\CssSelector\Exception\ExpressionErrorException
+     */
     public function testCssToXPathPseudoElement()
     {
         $translator = new Translator();
         $translator->registerExtension(new HtmlExtension($translator));
-        $this->expectException(ExpressionErrorException::class);
         $translator->cssToXPath('e::first-line');
     }
 
+    /**
+     * @expectedException \Symfony\Component\CssSelector\Exception\ExpressionErrorException
+     */
     public function testGetExtensionNotExistsExtension()
     {
         $translator = new Translator();
         $translator->registerExtension(new HtmlExtension($translator));
-        $this->expectException(ExpressionErrorException::class);
         $translator->getExtension('fake');
     }
 
+    /**
+     * @expectedException \Symfony\Component\CssSelector\Exception\ExpressionErrorException
+     */
     public function testAddCombinationNotExistsExtension()
     {
         $translator = new Translator();
         $translator->registerExtension(new HtmlExtension($translator));
-        $this->expectException(ExpressionErrorException::class);
         $parser = new Parser();
         $xpath = $parser->parse('*')[0];
         $combinedXpath = $parser->parse('*')[0];
         $translator->addCombination('fake', $xpath, $combinedXpath);
     }
 
+    /**
+     * @expectedException \Symfony\Component\CssSelector\Exception\ExpressionErrorException
+     */
     public function testAddFunctionNotExistsFunction()
     {
         $translator = new Translator();
         $translator->registerExtension(new HtmlExtension($translator));
         $xpath = new XPathExpr();
         $function = new FunctionNode(new ElementNode(), 'fake');
-        $this->expectException(ExpressionErrorException::class);
         $translator->addFunction($xpath, $function);
     }
 
+    /**
+     * @expectedException \Symfony\Component\CssSelector\Exception\ExpressionErrorException
+     */
     public function testAddPseudoClassNotExistsClass()
     {
         $translator = new Translator();
         $translator->registerExtension(new HtmlExtension($translator));
         $xpath = new XPathExpr();
-        $this->expectException(ExpressionErrorException::class);
         $translator->addPseudoClass($xpath, 'fake');
     }
 
+    /**
+     * @expectedException \Symfony\Component\CssSelector\Exception\ExpressionErrorException
+     */
     public function testAddAttributeMatchingClassNotExistsClass()
     {
         $translator = new Translator();
         $translator->registerExtension(new HtmlExtension($translator));
         $xpath = new XPathExpr();
-        $this->expectException(ExpressionErrorException::class);
         $translator->addAttributeMatching($xpath, '', '', '');
     }
 

From 1c85707946807cf692174fe361335774436b045d Mon Sep 17 00:00:00 2001
From: Roland Franssen <franssen.roland@gmail.com>
Date: Sat, 12 Jan 2019 21:55:35 +0100
Subject: [PATCH 026/103] [Form] SA fix

---
 .../Form/Test/Traits/ValidatorExtensionTrait.php       | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Form/Test/Traits/ValidatorExtensionTrait.php b/src/Symfony/Component/Form/Test/Traits/ValidatorExtensionTrait.php
index d5bcb04a4df6..07dd9e0d5559 100644
--- a/src/Symfony/Component/Form/Test/Traits/ValidatorExtensionTrait.php
+++ b/src/Symfony/Component/Form/Test/Traits/ValidatorExtensionTrait.php
@@ -18,8 +18,14 @@
 
 trait ValidatorExtensionTrait
 {
+    /**
+     * @var ValidatorInterface|null
+     */
     protected $validator;
 
+    /**
+     * @return ValidatorExtension
+     */
     protected function getValidatorExtension()
     {
         if (!interface_exists(ValidatorInterface::class)) {
@@ -31,9 +37,9 @@ protected function getValidatorExtension()
         }
 
         $this->validator = $this->getMockBuilder(ValidatorInterface::class)->getMock();
-        $metadata = $this->getMockBuilder(ClassMetadata::class)->disableOriginalConstructor()->setMethods(array('addPropertyConstraint'))->getMock();
+        $metadata = $this->getMockBuilder(ClassMetadata::class)->disableOriginalConstructor()->setMethods(['addPropertyConstraint'])->getMock();
         $this->validator->expects($this->any())->method('getMetadataFor')->will($this->returnValue($metadata));
-        $this->validator->expects($this->any())->method('validate')->will($this->returnValue(array()));
+        $this->validator->expects($this->any())->method('validate')->will($this->returnValue([]));
 
         return new ValidatorExtension($this->validator);
     }

From 40089fb28f78df9bda2c4fa043df11b187efccb8 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Mon, 14 Jan 2019 11:10:57 +0100
Subject: [PATCH 027/103] fix compatibility with Twig >= 2.6.1

---
 .../Bridge/Twig/TokenParser/TransChoiceTokenParser.php        | 2 +-
 src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php      | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php b/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
index 5261d7ad52ce..1cda1dcb3c1b 100644
--- a/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
+++ b/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
@@ -68,7 +68,7 @@ public function parse(Token $token)
         $body = $this->parser->subparse(array($this, 'decideTransChoiceFork'), true);
 
         if (!$body instanceof TextNode && !$body instanceof AbstractExpression) {
-            throw new SyntaxError('A message inside a transchoice tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext()->getName());
+            throw new SyntaxError('A message inside a transchoice tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext());
         }
 
         $stream->expect(Token::BLOCK_END_TYPE);
diff --git a/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php b/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
index 76c8dc06100c..5fe2255fcd68 100644
--- a/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
+++ b/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
@@ -60,7 +60,7 @@ public function parse(Token $token)
                 $stream->next();
                 $locale = $this->parser->getExpressionParser()->parseExpression();
             } elseif (!$stream->test(Token::BLOCK_END_TYPE)) {
-                throw new SyntaxError('Unexpected token. Twig was looking for the "with", "from", or "into" keyword.', $stream->getCurrent()->getLine(), $stream->getSourceContext()->getName());
+                throw new SyntaxError('Unexpected token. Twig was looking for the "with", "from", or "into" keyword.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
             }
         }
 
@@ -69,7 +69,7 @@ public function parse(Token $token)
         $body = $this->parser->subparse(array($this, 'decideTransFork'), true);
 
         if (!$body instanceof TextNode && !$body instanceof AbstractExpression) {
-            throw new SyntaxError('A message inside a trans tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext()->getName());
+            throw new SyntaxError('A message inside a trans tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext());
         }
 
         $stream->expect(Token::BLOCK_END_TYPE);

From 37e8ccba0f5743f6180e19b4b63d34e69c6e6101 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Mon, 14 Jan 2019 15:06:08 +0100
Subject: [PATCH 028/103] bump required Twig version

---
 src/Symfony/Bridge/Twig/composer.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Bridge/Twig/composer.json b/src/Symfony/Bridge/Twig/composer.json
index 6234fda14967..7d646c001043 100644
--- a/src/Symfony/Bridge/Twig/composer.json
+++ b/src/Symfony/Bridge/Twig/composer.json
@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": "^5.5.9|>=7.0.8",
-        "twig/twig": "^1.36.1|^2.6.1"
+        "twig/twig": "^1.37.1|^2.6.2"
     },
     "require-dev": {
         "symfony/asset": "~2.8|~3.0|~4.0",

From 5183049b73a3a9fab813e2613233f02106f46d19 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Mon, 14 Jan 2019 18:38:02 +0100
Subject: [PATCH 029/103] updated MimeType extensions

---
 .../MimeType/MimeTypeExtensionGuesser.php     | 23 +++++++++++--------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/src/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeExtensionGuesser.php b/src/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeExtensionGuesser.php
index 77bf51b1e5a0..d5acb34094c1 100644
--- a/src/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeExtensionGuesser.php
+++ b/src/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeExtensionGuesser.php
@@ -20,11 +20,11 @@ class MimeTypeExtensionGuesser implements ExtensionGuesserInterface
      * A map of mime types and their default extensions.
      *
      * This list has been placed under the public domain by the Apache HTTPD project.
-     * This list has been updated from upstream on 2013-04-23.
+     * This list has been updated from upstream on 2019-01-14.
      *
-     * @see http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types
+     * @see https://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types
      */
-    protected $defaultExtensions = array(
+    protected $defaultExtensions = [
         'application/andrew-inset' => 'ez',
         'application/applixware' => 'aw',
         'application/atom+xml' => 'atom',
@@ -618,7 +618,7 @@ class MimeTypeExtensionGuesser implements ExtensionGuesserInterface
         'audio/adpcm' => 'adp',
         'audio/basic' => 'au',
         'audio/midi' => 'mid',
-        'audio/mp4' => 'mp4a',
+        'audio/mp4' => 'm4a',
         'audio/mpeg' => 'mpga',
         'audio/ogg' => 'oga',
         'audio/s3m' => 's3m',
@@ -653,6 +653,11 @@ class MimeTypeExtensionGuesser implements ExtensionGuesserInterface
         'chemical/x-cml' => 'cml',
         'chemical/x-csml' => 'csml',
         'chemical/x-xyz' => 'xyz',
+        'font/collection' => 'ttc',
+        'font/otf' => 'otf',
+        'font/ttf' => 'ttf',
+        'font/woff' => 'woff',
+        'font/woff2' => 'woff2',
         'image/bmp' => 'bmp',
         'image/x-ms-bmp' => 'bmp',
         'image/cgm' => 'cgm',
@@ -669,8 +674,8 @@ class MimeTypeExtensionGuesser implements ExtensionGuesserInterface
         'image/tiff' => 'tiff',
         'image/vnd.adobe.photoshop' => 'psd',
         'image/vnd.dece.graphic' => 'uvi',
-        'image/vnd.dvb.subtitle' => 'sub',
         'image/vnd.djvu' => 'djvu',
+        'image/vnd.dvb.subtitle' => 'sub',
         'image/vnd.dwg' => 'dwg',
         'image/vnd.dxf' => 'dxf',
         'image/vnd.fastbidsheet' => 'fbs',
@@ -732,8 +737,8 @@ class MimeTypeExtensionGuesser implements ExtensionGuesserInterface
         'text/vcard' => 'vcard',
         'text/vnd.curl' => 'curl',
         'text/vnd.curl.dcurl' => 'dcurl',
-        'text/vnd.curl.scurl' => 'scurl',
         'text/vnd.curl.mcurl' => 'mcurl',
+        'text/vnd.curl.scurl' => 'scurl',
         'text/vnd.dvb.subtitle' => 'sub',
         'text/vnd.fly' => 'fly',
         'text/vnd.fmi.flexstor' => 'flx',
@@ -747,10 +752,10 @@ class MimeTypeExtensionGuesser implements ExtensionGuesserInterface
         'text/x-asm' => 's',
         'text/x-c' => 'c',
         'text/x-fortran' => 'f',
-        'text/x-pascal' => 'p',
         'text/x-java-source' => 'java',
-        'text/x-opml' => 'opml',
         'text/x-nfo' => 'nfo',
+        'text/x-opml' => 'opml',
+        'text/x-pascal' => 'p',
         'text/x-setext' => 'etx',
         'text/x-sfv' => 'sfv',
         'text/x-uuencode' => 'uu',
@@ -796,7 +801,7 @@ class MimeTypeExtensionGuesser implements ExtensionGuesserInterface
         'video/x-sgi-movie' => 'movie',
         'video/x-smv' => 'smv',
         'x-conference/x-cooltalk' => 'ice',
-    );
+    ];
 
     /**
      * {@inheritdoc}

From 81f63b1a43c39f8ba6c7eef126ad0ace5be5abc2 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Mon, 14 Jan 2019 19:15:26 +0100
Subject: [PATCH 030/103] fix test after revert of bugfix

In #29853 the bugfix made in #29597 was reverted as it did not work as
expected. This fixture file has been modified after the 3.4 branch was
merged up to account for the changes made in #2957 and must now be
reverted to the former state too.
---
 .../Tests/Fixtures/config/prototype_array.expected.yml | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype_array.expected.yml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype_array.expected.yml
index 0af4d530a087..ebfe087d779c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype_array.expected.yml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype_array.expected.yml
@@ -4,22 +4,22 @@ services:
         class: Symfony\Component\DependencyInjection\ContainerInterface
         public: true
         synthetic: true
-    Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\Bar:
-        class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\Bar
+    Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo:
+        class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo
         public: true
         tags:
             - { name: foo }
             - { name: baz }
         deprecated: '%service_id%'
-        lazy: true
         arguments: [1]
         factory: f
-    Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo:
-        class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo
+    Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\Bar:
+        class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\Bar
         public: true
         tags:
             - { name: foo }
             - { name: baz }
         deprecated: '%service_id%'
+        lazy: true
         arguments: [1]
         factory: f

From 16f97b9769144931f00d7f523c4a35db85299ca3 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Tue, 15 Jan 2019 14:09:02 +0100
Subject: [PATCH 031/103] remove unreachable code

Since our version constraint is `^1.37.1|^2.6.2` any Twig version that
is below 2.4.5 must be a Twig 1.x release.
---
 src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
index 6e61a7d66a58..9fe08613765b 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
@@ -53,12 +53,8 @@ protected function getVariableGetterWithoutStrictCheck($name)
 
     protected function getVariableGetterWithStrictCheck($name)
     {
-        if (Environment::VERSION_ID > 20404) {
-            return sprintf('(isset($context["%s"]) || array_key_exists("%1$s", $context) ? $context["%1$s"] : (function () { throw new Twig_Error_Runtime(\'Variable "%1$s" does not exist.\', 0, $this->source); })())', $name);
-        }
-
         if (Environment::MAJOR_VERSION >= 2) {
-            return sprintf('(isset($context["%s"]) || array_key_exists("%1$s", $context) ? $context["%1$s"] : (function () { throw new Twig_Error_Runtime(\'Variable "%1$s" does not exist.\', 0, $this->getSourceContext()); })())', $name);
+            return sprintf('(isset($context["%s"]) || array_key_exists("%1$s", $context) ? $context["%1$s"] : (function () { throw new Twig_Error_Runtime(\'Variable "%1$s" does not exist.\', 0, $this->source); })())', $name);
         }
 
         if (\PHP_VERSION_ID >= 70000) {

From caca373383ba15aae7084a73bb22c68d3f164cd8 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Tue, 15 Jan 2019 14:43:24 +0100
Subject: [PATCH 032/103] the string "0" is a valid service identifier

---
 .../Component/DependencyInjection/Loader/XmlFileLoader.php    | 4 ++--
 .../DependencyInjection/Tests/Fixtures/xml/services6.xml      | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
index 4236b72f252a..4677a61ca4c1 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
@@ -496,7 +496,7 @@ private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase =
 
             switch ($arg->getAttribute('type')) {
                 case 'service':
-                    if (!$arg->getAttribute('id')) {
+                    if ('' === $arg->getAttribute('id')) {
                         throw new InvalidArgumentException(sprintf('Tag "<%s>" with type="service" has no or empty "id" attribute in "%s".', $name, $file));
                     }
                     if ($arg->hasAttribute('strict')) {
@@ -549,7 +549,7 @@ private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase =
      * @param \DOMNode $node
      * @param mixed    $name
      *
-     * @return array
+     * @return \DOMElement[]
      */
     private function getChildren(\DOMNode $node, $name)
     {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services6.xml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services6.xml
index cffd5df6059a..c85b7a7c01ef 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services6.xml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services6.xml
@@ -61,5 +61,9 @@
     </service>
     <service id="alias_for_foo" alias="foo" />
     <service id="another_alias_for_foo" alias="foo" public="false" />
+    <service id="0" class="FooClass" />
+    <service id="1" class="FooClass">
+      <argument type="service" id="0" />
+    </service>
   </services>
 </container>

From 33a001e460312c6538a48bf7aa192d12cdcd694b Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 10:39:14 +0100
Subject: [PATCH 033/103] switched array() to []

---
 .php_cs.dist                                  |   16 +-
 .../Doctrine/ContainerAwareEventManager.php   |    4 +-
 .../DataCollector/DoctrineDataCollector.php   |   28 +-
 .../AbstractDoctrineExtension.php             |   54 +-
 ...gisterEventListenersAndSubscribersPass.php |   12 +-
 .../CompilerPass/RegisterMappingsPass.php     |    6 +-
 .../Form/ChoiceList/DoctrineChoiceLoader.php  |   10 +-
 .../Doctrine/Form/ChoiceList/IdReader.php     |    2 +-
 .../Form/ChoiceList/ORMQueryBuilderLoader.php |    6 +-
 .../CollectionToArrayTransformer.php          |    4 +-
 .../Doctrine/Form/DoctrineOrmExtension.php    |    4 +-
 .../Doctrine/Form/DoctrineOrmTypeGuesser.php  |   34 +-
 .../MergeDoctrineCollectionListener.php       |   12 +-
 .../Doctrine/Form/Type/DoctrineType.php       |   28 +-
 .../Bridge/Doctrine/Form/Type/EntityType.php  |   10 +-
 .../DbalSessionHandlerSchema.php              |    2 +-
 .../Bridge/Doctrine/Logger/DbalLogger.php     |    2 +-
 .../PropertyInfo/DoctrineExtractor.php        |   26 +-
 .../RememberMe/DoctrineTokenProvider.php      |   24 +-
 .../Security/User/EntityUserProvider.php      |    2 +-
 .../Doctrine/Test/DoctrineTestHelper.php      |    6 +-
 .../Doctrine/Test/TestRepositoryFactory.php   |    2 +-
 .../Tests/ContainerAwareEventManagerTest.php  |    6 +-
 .../DoctrineDataCollectorTest.php             |   96 +-
 ...erEventListenersAndSubscribersPassTest.php |  128 +-
 .../CompilerPass/RegisterMappingsPassTest.php |    6 +-
 .../DoctrineExtensionTest.php                 |  184 +-
 .../Tests/Fixtures/SingleIntIdEntity.php      |    2 +-
 .../ChoiceList/DoctrineChoiceLoaderTest.php   |   80 +-
 .../ChoiceList/ORMQueryBuilderLoaderTest.php  |   48 +-
 .../CollectionToArrayTransformerTest.php      |   14 +-
 .../Tests/Form/DoctrineOrmTypeGuesserTest.php |   22 +-
 .../MergeDoctrineCollectionListenerTest.php   |    8 +-
 .../Form/Type/EntityTypePerformanceTest.php   |   20 +-
 .../Tests/Form/Type/EntityTypeTest.php        |  522 ++--
 .../Doctrine/Tests/Logger/DbalLoggerTest.php  |   72 +-
 .../Doctrine/Tests/ManagerRegistryTest.php    |    2 +-
 .../PropertyInfo/DoctrineExtractorTest.php    |   66 +-
 .../PropertyInfo/Fixtures/DoctrineFooType.php |    2 +-
 .../Security/User/EntityUserProviderTest.php  |    8 +-
 .../Constraints/UniqueEntityValidatorTest.php |  188 +-
 .../Validator/Constraints/UniqueEntity.php    |    8 +-
 .../Constraints/UniqueEntityValidator.php     |   10 +-
 .../Monolog/Formatter/ConsoleFormatter.php    |   28 +-
 .../Monolog/Handler/ChromePhpHandler.php      |    6 +-
 .../Bridge/Monolog/Handler/ConsoleHandler.php |   18 +-
 .../Bridge/Monolog/Handler/DebugHandler.php   |    8 +-
 .../Bridge/Monolog/Handler/FirePHPHandler.php |    6 +-
 .../Monolog/Handler/ServerLogHandler.php      |    4 +-
 src/Symfony/Bridge/Monolog/Logger.php         |    2 +-
 .../Monolog/Processor/DebugProcessor.php      |    8 +-
 .../Monolog/Processor/TokenProcessor.php      |    4 +-
 .../Bridge/Monolog/Processor/WebProcessor.php |    2 +-
 .../Tests/Handler/ConsoleHandlerTest.php      |   60 +-
 .../NotFoundActivationStrategyTest.php        |   26 +-
 .../Bridge/Monolog/Tests/LoggerTest.php       |   18 +-
 .../Tests/Processor/TokenProcessorTest.php    |    4 +-
 .../Tests/Processor/WebProcessorTest.php      |   24 +-
 src/Symfony/Bridge/PhpUnit/ClockMock.php      |    2 +-
 .../PhpUnit/DeprecationErrorHandler.php       |   52 +-
 src/Symfony/Bridge/PhpUnit/DnsMock.php        |   16 +-
 .../PhpUnit/Legacy/CoverageListenerTrait.php  |   14 +-
 .../Legacy/SymfonyTestsListenerForV5.php      |    2 +-
 .../Legacy/SymfonyTestsListenerForV6.php      |    2 +-
 .../Legacy/SymfonyTestsListenerForV7.php      |    2 +-
 .../Legacy/SymfonyTestsListenerTrait.php      |   36 +-
 .../Bridge/PhpUnit/Legacy/TestRunnerForV5.php |    2 +-
 .../Bridge/PhpUnit/Legacy/TestRunnerForV6.php |    2 +-
 .../Bridge/PhpUnit/Legacy/TestRunnerForV7.php |    2 +-
 .../Bridge/PhpUnit/Tests/DnsMockTest.php      |   98 +-
 .../Tests/LazyProxy/Dumper/PhpDumperTest.php  |    2 +-
 .../Tests/LazyProxy/Fixtures/includes/foo.php |    6 +-
 .../LazyProxy/PhpDumper/ProxyDumperTest.php   |   24 +-
 src/Symfony/Bridge/Twig/AppVariable.php       |    8 +-
 .../Bridge/Twig/Command/DebugCommand.php      |   24 +-
 .../Bridge/Twig/Command/LintCommand.php       |   14 +-
 .../Twig/DataCollector/TwigDataCollector.php  |   18 +-
 .../Bridge/Twig/Extension/AssetExtension.php  |    8 +-
 .../Bridge/Twig/Extension/CodeExtension.php   |   30 +-
 .../Bridge/Twig/Extension/DumpExtension.php   |   12 +-
 .../Twig/Extension/ExpressionExtension.php    |    6 +-
 .../Bridge/Twig/Extension/FormExtension.php   |   38 +-
 .../Extension/HttpFoundationExtension.php     |    8 +-
 .../Twig/Extension/HttpKernelExtension.php    |   10 +-
 .../Twig/Extension/HttpKernelRuntime.php      |    4 +-
 .../Twig/Extension/LogoutUrlExtension.php     |    8 +-
 .../Twig/Extension/RoutingExtension.php       |   16 +-
 .../Twig/Extension/SecurityExtension.php      |    6 +-
 .../Twig/Extension/StopwatchExtension.php     |    4 +-
 .../Twig/Extension/TranslationExtension.php   |   20 +-
 .../Twig/Extension/WebLinkExtension.php       |   28 +-
 .../Twig/Extension/WorkflowExtension.php      |   12 +-
 .../Bridge/Twig/Extension/YamlExtension.php   |    8 +-
 .../Bridge/Twig/Form/TwigRendererEngine.php   |    6 +-
 src/Symfony/Bridge/Twig/Node/DumpNode.php     |    4 +-
 .../Bridge/Twig/Node/FormThemeNode.php        |    2 +-
 .../Twig/Node/SearchAndRenderBlockNode.php    |    2 +-
 .../Bridge/Twig/Node/StopwatchNode.php        |    2 +-
 .../Twig/Node/TransDefaultDomainNode.php      |    2 +-
 src/Symfony/Bridge/Twig/Node/TransNode.php    |   10 +-
 src/Symfony/Bridge/Twig/NodeVisitor/Scope.php |    2 +-
 .../TranslationDefaultDomainNodeVisitor.php   |    6 +-
 .../NodeVisitor/TranslationNodeVisitor.php    |   18 +-
 .../Bridge/Twig/Tests/AppVariableTest.php     |   48 +-
 .../Twig/Tests/Command/DebugCommandTest.php   |   18 +-
 .../Twig/Tests/Command/LintCommandTest.php    |   12 +-
 ...AbstractBootstrap3HorizontalLayoutTest.php |   66 +-
 .../AbstractBootstrap3LayoutTest.php          |  642 ++---
 ...AbstractBootstrap4HorizontalLayoutTest.php |   72 +-
 .../AbstractBootstrap4LayoutTest.php          |  226 +-
 .../Tests/Extension/CodeExtensionTest.php     |   20 +-
 .../Tests/Extension/DumpExtensionTest.php     |   50 +-
 .../Extension/ExpressionExtensionTest.php     |    2 +-
 .../Extension/Fixtures/StubTranslator.php     |    4 +-
 ...xtensionBootstrap3HorizontalLayoutTest.php |   30 +-
 .../FormExtensionBootstrap3LayoutTest.php     |   42 +-
 ...xtensionBootstrap4HorizontalLayoutTest.php |   30 +-
 .../FormExtensionBootstrap4LayoutTest.php     |   42 +-
 .../Extension/FormExtensionDivLayoutTest.php  |   92 +-
 .../FormExtensionTableLayoutTest.php          |   34 +-
 .../Tests/Extension/FormExtensionTest.php     |    6 +-
 .../Extension/HttpFoundationExtensionTest.php |   76 +-
 .../Extension/HttpKernelExtensionTest.php     |   12 +-
 .../Tests/Extension/RoutingExtensionTest.php  |   34 +-
 .../Tests/Extension/RuntimeLoaderProvider.php |    6 +-
 .../Extension/StopwatchExtensionTest.php      |   24 +-
 .../Extension/TranslationExtensionTest.php    |  106 +-
 .../Tests/Extension/WebLinkExtensionTest.php  |   24 +-
 .../Tests/Extension/WorkflowExtensionTest.php |   20 +-
 .../Bridge/Twig/Tests/Node/DumpNodeTest.php   |    8 +-
 .../Bridge/Twig/Tests/Node/FormThemeTest.php  |    8 +-
 .../Node/SearchAndRenderBlockNodeTest.php     |   56 +-
 .../Bridge/Twig/Tests/Node/TransNodeTest.php  |    2 +-
 ...ranslationDefaultDomainNodeVisitorTest.php |   30 +-
 .../TranslationNodeVisitorTest.php            |   26 +-
 .../Tests/NodeVisitor/TwigNodeProvider.php    |   20 +-
 .../TokenParser/FormThemeTokenParserTest.php  |   50 +-
 .../Tests/Translation/TwigExtractorTest.php   |   70 +-
 .../Bridge/Twig/Tests/TwigEngineTest.php      |    6 +-
 .../Twig/TokenParser/FormThemeTokenParser.php |    2 +-
 .../Twig/TokenParser/StopwatchTokenParser.php |    2 +-
 .../TokenParser/TransChoiceTokenParser.php    |    6 +-
 .../Twig/TokenParser/TransTokenParser.php     |    6 +-
 src/Symfony/Bridge/Twig/TwigEngine.php        |    4 +-
 .../Bridge/Twig/UndefinedCallableHandler.php  |   12 +-
 .../DependencyInjection/DebugExtension.php    |    6 +-
 .../Compiler/DumpDataCollectorPassTest.php    |    8 +-
 .../DebugExtensionTest.php                    |   20 +-
 .../AbstractPhpFileCacheWarmer.php            |    4 +-
 .../CacheWarmer/RouterCacheWarmer.php         |    4 +-
 .../CacheWarmer/SerializerCacheWarmer.php     |    2 +-
 .../CacheWarmer/TemplateFinder.php            |    4 +-
 .../CacheWarmer/TemplatePathsCacheWarmer.php  |    2 +-
 .../CacheWarmer/TranslationsCacheWarmer.php   |    4 +-
 .../CacheWarmer/ValidatorCacheWarmer.php      |    2 +-
 src/Symfony/Bundle/FrameworkBundle/Client.php |    2 +-
 .../FrameworkBundle/Command/AboutCommand.php  |   58 +-
 .../Command/AbstractConfigCommand.php         |    6 +-
 .../Command/AssetsInstallCommand.php          |   16 +-
 .../Command/CacheClearCommand.php             |    8 +-
 .../Command/CachePoolClearCommand.php         |    8 +-
 .../Command/CacheWarmupCommand.php            |    4 +-
 .../Command/ConfigDebugCommand.php            |    6 +-
 .../Command/ConfigDumpReferenceCommand.php    |   10 +-
 .../Command/ContainerDebugCommand.php         |   28 +-
 .../Command/DebugAutowiringCommand.php        |   14 +-
 .../Command/EventDispatcherDebugCommand.php   |    8 +-
 .../Command/RouterDebugCommand.php            |   12 +-
 .../Command/RouterMatchCommand.php            |    6 +-
 .../Command/TranslationDebugCommand.php       |   30 +-
 .../Command/TranslationUpdateCommand.php      |   20 +-
 .../Command/WorkflowDumpCommand.php           |    4 +-
 .../FrameworkBundle/Console/Application.php   |    6 +-
 .../Console/Descriptor/Descriptor.php         |   28 +-
 .../Console/Descriptor/JsonDescriptor.php     |   66 +-
 .../Console/Descriptor/MarkdownDescriptor.php |   36 +-
 .../Console/Descriptor/TextDescriptor.php     |  156 +-
 .../Console/Descriptor/XmlDescriptor.php      |   26 +-
 .../Controller/AbstractController.php         |    4 +-
 .../Controller/ControllerNameParser.php       |    4 +-
 .../Controller/ControllerTrait.php            |   22 +-
 .../Controller/RedirectController.php         |    2 +-
 .../DataCollector/RequestDataCollector.php    |    4 +-
 .../Compiler/AddCacheClearerPass.php          |    2 +-
 .../Compiler/AddDebugLogProcessorPass.php     |    2 +-
 .../AddExpressionLanguageProvidersPass.php    |    4 +-
 .../Compiler/CacheCollectorPass.php           |    8 +-
 .../Compiler/CachePoolClearerPass.php         |    2 +-
 .../Compiler/CachePoolPass.php                |   14 +-
 .../Compiler/CachePoolPrunerPass.php          |    2 +-
 .../DependencyInjection/Compiler/FormPass.php |    4 +-
 .../Compiler/LoggingTranslatorPass.php        |    2 +-
 .../Compiler/ProfilerPass.php                 |    8 +-
 .../Compiler/TemplatingPass.php               |    6 +-
 .../Compiler/UnusedTagsPass.php               |    6 +-
 .../Compiler/WorkflowGuardListenerPass.php    |    4 +-
 .../DependencyInjection/Configuration.php     |   76 +-
 .../FrameworkExtension.php                    |  196 +-
 .../ResolveControllerNameSubscriber.php       |    6 +-
 .../FrameworkBundle/FrameworkBundle.php       |    4 +-
 .../FrameworkBundle/HttpCache/HttpCache.php   |    4 +-
 .../Kernel/MicroKernelTrait.php               |    8 +-
 .../AnnotatedRouteControllerLoader.php        |    6 +-
 .../Routing/RedirectableUrlMatcher.php        |    4 +-
 .../Bundle/FrameworkBundle/Routing/Router.php |   12 +-
 .../Templating/DelegatingEngine.php           |    2 +-
 .../Templating/EngineInterface.php            |    2 +-
 .../Templating/Helper/ActionsHelper.php       |    4 +-
 .../Templating/Helper/CodeHelper.php          |    8 +-
 .../Templating/Helper/FormHelper.php          |   18 +-
 .../Templating/Helper/RouterHelper.php        |    4 +-
 .../Templating/Helper/SessionHelper.php       |    2 +-
 .../Templating/Helper/StopwatchHelper.php     |    4 +-
 .../Templating/Helper/TranslatorHelper.php    |    4 +-
 .../Templating/Loader/TemplateLocator.php     |    2 +-
 .../FrameworkBundle/Templating/PhpEngine.php  |    2 +-
 .../Templating/TemplateNameParser.php         |    2 +-
 .../Templating/TemplateReference.php          |    4 +-
 .../Templating/TimedPhpEngine.php             |    2 +-
 .../FrameworkBundle/Test/KernelTestCase.php   |    4 +-
 .../FrameworkBundle/Test/WebTestCase.php      |    2 +-
 .../AnnotationsCacheWarmerTest.php            |    4 +-
 .../CacheWarmer/ClassCacheCacheWarmerTest.php |    4 +-
 .../CacheWarmer/SerializerCacheWarmerTest.php |    6 +-
 .../Tests/CacheWarmer/TemplateFinderTest.php  |    2 +-
 .../TemplatePathsCacheWarmerTest.php          |   10 +-
 .../FrameworkBundle/Tests/ClientTest.php      |    2 +-
 .../CacheClearCommandTest.php                 |    2 +-
 .../Fixture/TestAppKernel.php                 |    4 +-
 .../Tests/Command/CachePruneCommandTest.php   |    8 +-
 .../Tests/Command/RouterDebugCommandTest.php  |   10 +-
 .../Tests/Command/RouterMatchCommandTest.php  |    8 +-
 .../Command/TranslationDebugCommandTest.php   |   68 +-
 .../Command/TranslationUpdateCommandTest.php  |   70 +-
 .../Tests/Command/YamlLintCommandTest.php     |   14 +-
 .../Tests/Console/ApplicationTest.php         |   66 +-
 .../Descriptor/AbstractDescriptorTest.php     |   52 +-
 .../Console/Descriptor/ObjectsProvider.php    |   88 +-
 .../Controller/ControllerNameParserTest.php   |   34 +-
 .../Controller/ControllerResolverTest.php     |   10 +-
 .../Tests/Controller/ControllerTraitTest.php  |   14 +-
 .../Controller/RedirectControllerTest.php     |   80 +-
 .../Compiler/AddCacheWarmerPassTest.php       |   14 +-
 .../Compiler/AddConsoleCommandPassTest.php    |   10 +-
 .../AddConstraintValidatorsPassTest.php       |   10 +-
 .../Compiler/CacheCollectorPassTest.php       |    8 +-
 .../Compiler/CachePoolClearerPassTest.php     |   12 +-
 .../Compiler/CachePoolPassTest.php            |    6 +-
 .../Compiler/CachePoolPrunerPassTest.php      |    8 +-
 .../Compiler/ConfigCachePassTest.php          |    8 +-
 ...ontrollerArgumentValueResolverPassTest.php |   20 +-
 .../DataCollectorTranslatorPassTest.php       |   24 +-
 .../Compiler/FormPassTest.php                 |  124 +-
 .../Compiler/LoggingTranslatorPassTest.php    |   12 +-
 .../Compiler/ProfilerPassTest.php             |    6 +-
 .../Compiler/PropertyInfoPassTest.php         |   32 +-
 .../Compiler/SerializerPassTest.php           |   14 +-
 .../Compiler/TranslatorPassTest.php           |   14 +-
 .../Compiler/UnusedTagsPassTest.php           |    2 +-
 .../DependencyInjection/ConfigurationTest.php |  290 +--
 .../Fixtures/php/assets.php                   |   42 +-
 .../Fixtures/php/assets_disabled.php          |    8 +-
 .../assets_version_strategy_as_service.php    |    8 +-
 .../Fixtures/php/cache.php                    |   32 +-
 .../Fixtures/php/cache_env_var.php            |    8 +-
 .../DependencyInjection/Fixtures/php/csrf.php |    8 +-
 .../Fixtures/php/csrf_needs_session.php       |    8 +-
 .../Fixtures/php/default_config.php           |    2 +-
 .../php/esi_and_ssi_without_fragments.php     |   16 +-
 .../Fixtures/php/esi_disabled.php             |    8 +-
 .../Fixtures/php/form_no_csrf.php             |   12 +-
 .../DependencyInjection/Fixtures/php/full.php |   80 +-
 .../Fixtures/php/php_errors_disabled.php      |    8 +-
 .../Fixtures/php/php_errors_enabled.php       |    8 +-
 .../Fixtures/php/profiler.php                 |    8 +-
 .../Fixtures/php/property_accessor.php        |    8 +-
 .../Fixtures/php/property_info.php            |    8 +-
 .../Fixtures/php/request.php                  |   10 +-
 .../Fixtures/php/serializer_disabled.php      |    8 +-
 .../Fixtures/php/serializer_enabled.php       |    8 +-
 .../Fixtures/php/serializer_legacy_cache.php  |    8 +-
 .../Fixtures/php/serializer_mapping.php       |   18 +-
 .../Fixtures/php/session.php                  |    8 +-
 .../Fixtures/php/ssi_disabled.php             |    8 +-
 .../Fixtures/php/templating_disabled.php      |    4 +-
 .../Fixtures/php/templating_no_assets.php     |   10 +-
 .../php/templating_php_assets_disabled.php    |   10 +-
 .../templating_php_translator_disabled.php    |   10 +-
 .../php/templating_php_translator_enabled.php |   10 +-
 .../Fixtures/php/translator_fallbacks.php     |   10 +-
 .../Fixtures/php/validation_annotations.php   |    8 +-
 .../Fixtures/php/validation_mapping.php       |   16 +-
 .../validation_multiple_static_methods.php    |   10 +-
 .../php/validation_no_static_method.php       |    8 +-
 .../Fixtures/php/validation_strict_email.php  |    8 +-
 .../php/validation_translation_domain.php     |    8 +-
 .../Fixtures/php/web_link.php                 |    6 +-
 .../workflow_with_arguments_and_service.php   |   42 +-
 .../php/workflow_with_guard_expression.php    |   52 +-
 ...th_multiple_transitions_with_same_name.php |   52 +-
 ...flow_with_support_and_support_strategy.php |   40 +-
 .../php/workflow_with_type_and_service.php    |   40 +-
 ...w_without_support_and_support_strategy.php |   36 +-
 .../Fixtures/php/workflows.php                |  122 +-
 .../Fixtures/php/workflows_enabled.php        |    4 +-
 .../php/workflows_explicitly_enabled.php      |   28 +-
 ...ows_explicitly_enabled_named_workflows.php |   28 +-
 .../Fixtures/php/workflows_without_type.php   |   32 +-
 .../FrameworkExtensionTest.php                |  228 +-
 .../PhpFrameworkExtensionTest.php             |   24 +-
 .../ResolveControllerNameSubscriberTest.php   |    4 +-
 .../Tests/Fixtures/templates.php              |    4 +-
 .../Functional/AnnotatedControllerTest.php    |   18 +-
 .../Tests/Functional/AutowiringTypesTest.php  |   10 +-
 .../Controller/FragmentController.php         |    2 +-
 .../Controller/SubRequestController.php       |    8 +-
 .../SubRequestServiceResolutionController.php |    2 +-
 .../DependencyInjection/TestExtension.php     |    2 +-
 .../Functional/CachePoolClearCommandTest.php  |   14 +-
 .../Tests/Functional/CachePoolsTest.php       |   10 +-
 .../Functional/ConfigDebugCommandTest.php     |   12 +-
 .../ConfigDumpReferenceCommandTest.php        |   14 +-
 .../Functional/ContainerDebugCommandTest.php  |   14 +-
 .../Tests/Functional/ContainerDumpTest.php    |    4 +-
 .../Functional/DebugAutowiringCommandTest.php |   12 +-
 .../Tests/Functional/FragmentTest.php         |   10 +-
 .../Tests/Functional/ProfilerTest.php         |   10 +-
 .../Tests/Functional/PropertyInfoTest.php     |    4 +-
 .../Tests/Functional/SerializerTest.php       |    4 +-
 .../Tests/Functional/SessionTest.php          |   18 +-
 .../Tests/Functional/SubRequestsTest.php      |    4 +-
 .../Tests/Functional/WebTestCase.php          |    2 +-
 .../app/AnnotatedController/bundles.php       |    4 +-
 .../Tests/Functional/app/AppKernel.php        |    2 +-
 .../app/AutowiringTypes/bundles.php           |    4 +-
 .../Functional/app/CachePoolClear/bundles.php |    4 +-
 .../Functional/app/CachePools/bundles.php     |    4 +-
 .../Functional/app/ConfigDump/bundles.php     |    4 +-
 .../Functional/app/ContainerDebug/bundles.php |    4 +-
 .../Functional/app/ContainerDump/bundles.php  |    4 +-
 .../ControllerServiceResolution/bundles.php   |    4 +-
 .../Tests/Functional/app/Fragment/bundles.php |    4 +-
 .../Tests/Functional/app/Profiler/bundles.php |    4 +-
 .../app/Resources/views/fragment.html.php     |   12 +-
 .../Functional/app/Serializer/bundles.php     |    4 +-
 .../Tests/Functional/app/Session/bundles.php  |    4 +-
 .../Tests/Kernel/ConcreteMicroKernel.php      |   12 +-
 .../Routing/RedirectableUrlMatcherTest.php    |   10 +-
 .../Tests/Routing/RouterTest.php              |   52 +-
 .../Tests/Templating/DelegatingEngineTest.php |   32 +-
 .../Tests/Templating/GlobalVariablesTest.php  |   18 +-
 .../Templating/Helper/AssetsHelperTest.php    |    2 +-
 .../Helper/Fixtures/StubTranslator.php        |    4 +-
 .../Helper/FormHelperDivLayoutTest.php        |   48 +-
 .../Helper/FormHelperTableLayoutTest.php      |   36 +-
 .../Templating/Helper/RequestHelperTest.php   |    2 +-
 .../Templating/Helper/SessionHelperTest.php   |    4 +-
 .../Templating/Loader/TemplateLocatorTest.php |    4 +-
 .../Templating/TemplateFilenameParserTest.php |   14 +-
 .../Templating/TemplateNameParserTest.php     |   48 +-
 .../Tests/Templating/TemplateTest.php         |   12 +-
 .../Tests/Translation/PhpExtractorTest.php    |   30 +-
 .../Tests/Translation/TranslatorTest.php      |  138 +-
 .../ConstraintValidatorFactoryTest.php        |    2 +-
 .../Translation/Translator.php                |   16 +-
 .../Validator/ConstraintValidatorFactory.php  |    2 +-
 .../SecurityBundle/Command/SetAclCommand.php  |    4 +-
 .../Command/UserPasswordEncoderCommand.php    |   14 +-
 .../DataCollector/SecurityDataCollector.php   |   34 +-
 .../SecurityBundle/Debug/WrappedListener.php  |    6 +-
 ...sterCsrfTokenClearingLogoutHandlerPass.php |    2 +-
 .../DependencyInjection/MainConfiguration.php |   46 +-
 .../Security/Factory/AbstractFactory.php      |   22 +-
 .../Security/Factory/FormLoginLdapFactory.php |    2 +-
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 .../Form/Extension/Core/Type/TimeType.php     |   48 +-
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 src/Symfony/Component/Form/Form.php           |   12 +-
 src/Symfony/Component/Form/FormBuilder.php    |   20 +-
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 .../Component/Form/FormConfigBuilder.php      |   16 +-
 src/Symfony/Component/Form/FormError.php      |    8 +-
 .../Component/Form/FormErrorIterator.php      |    2 +-
 src/Symfony/Component/Form/FormFactory.php    |   22 +-
 .../Component/Form/FormFactoryBuilder.php     |    8 +-
 .../Component/Form/FormFactoryInterface.php   |   12 +-
 src/Symfony/Component/Form/FormInterface.php  |    4 +-
 src/Symfony/Component/Form/FormRegistry.php   |   12 +-
 src/Symfony/Component/Form/FormRenderer.php   |   18 +-
 .../Form/FormRendererEngineInterface.php      |    2 +-
 .../Component/Form/FormRendererInterface.php  |    4 +-
 .../Component/Form/FormTypeGuesserChain.php   |    4 +-
 src/Symfony/Component/Form/FormView.php       |    8 +-
 .../Component/Form/NativeRequestHandler.php   |   14 +-
 .../Component/Form/PreloadedExtension.php     |    6 +-
 .../Component/Form/ResolvedFormType.php       |    4 +-
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 .../Form/Test/FormIntegrationTestCase.php     |    8 +-
 .../Component/Form/Test/TypeTestCase.php      |    2 +-
 .../Form/Tests/AbstractDivLayoutTest.php      |  152 +-
 .../Form/Tests/AbstractExtensionTest.php      |    2 +-
 .../Component/Form/Tests/AbstractFormTest.php |    2 +-
 .../Form/Tests/AbstractLayoutTest.php         |  714 +++---
 .../Form/Tests/AbstractRequestHandlerTest.php |  136 +-
 .../Form/Tests/AbstractTableLayoutTest.php    |   64 +-
 .../Form/Tests/ButtonBuilderTest.php          |   26 +-
 .../Component/Form/Tests/ButtonTest.php       |   12 +-
 .../ChoiceList/AbstractChoiceListTest.php     |   38 +-
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 .../Factory/CachingFactoryDecoratorTest.php   |  100 +-
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 .../Loader/CallbackChoiceLoaderTest.php       |   14 +-
 .../Form/Tests/Command/DebugCommandTest.php   |   26 +-
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 .../Component/Form/Tests/CompoundFormTest.php |  262 +-
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 .../DependencyInjection/FormPassTest.php      |  118 +-
 .../DataMapper/PropertyPathMapperTest.php     |   56 +-
 .../ArrayToPartsTransformerTest.php           |   60 +-
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 .../DateTimeToArrayTransformerTest.php        |  138 +-
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 .../DateTimeToStringTransformerTest.php       |   52 +-
 .../DateTimeZoneToStringTransformerTest.php   |    6 +-
 ...ntegerToLocalizedStringTransformerTest.php |  160 +-
 ...NumberToLocalizedStringTransformerTest.php |  358 +--
 ...ercentToLocalizedStringTransformerTest.php |    4 +-
 .../ValueToDuplicatesTransformerTest.php      |   44 +-
 .../FixUrlProtocolListenerTest.php            |   14 +-
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 .../Extension/Core/Type/CheckboxTypeTest.php  |   44 +-
 .../Core/Type/ChoiceTypePerformanceTest.php   |    4 +-
 .../Extension/Core/Type/ChoiceTypeTest.php    |  842 +++---
 .../Core/Type/CollectionTypeTest.php          |  204 +-
 .../Extension/Core/Type/CountryTypeTest.php   |    4 +-
 .../Extension/Core/Type/CurrencyTypeTest.php  |    2 +-
 .../Core/Type/DateIntervalTypeTest.php        |  158 +-
 .../Extension/Core/Type/DateTimeTypeTest.php  |  270 +-
 .../Extension/Core/Type/DateTypeTest.php      |  382 +--
 .../Core/Type/ExtendedChoiceTypeTest.php      |   12 +-
 .../Extension/Core/Type/FileTypeTest.php      |   64 +-
 .../Extension/Core/Type/FormTypeTest.php      |  186 +-
 .../Extension/Core/Type/IntegerTypeTest.php   |    4 +-
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 .../Extension/Core/Type/LocaleTypeTest.php    |    2 +-
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 .../Extension/Core/Type/RepeatedTypeTest.php  |   64 +-
 .../Extension/Core/Type/TextTypeTest.php      |   18 +-
 .../Extension/Core/Type/TimeTypeTest.php      |  330 +--
 .../Extension/Core/Type/TimezoneTypeTest.php  |   16 +-
 .../Tests/Extension/Core/Type/UrlTypeTest.php |   26 +-
 .../CsrfValidationListenerTest.php            |    4 +-
 .../Csrf/Type/FormTypeCsrfExtensionTest.php   |  112 +-
 .../DataCollector/FormDataCollectorTest.php   |  360 +--
 .../DataCollector/FormDataExtractorTest.php   |  176 +-
 .../Type/DataCollectorTypeExtensionTest.php   |    2 +-
 .../DependencyInjectionExtensionTest.php      |   42 +-
 .../HttpFoundationRequestHandlerTest.php      |    4 +-
 .../FormValidatorPerformanceTest.php          |    4 +-
 .../Constraints/FormValidatorTest.php         |  188 +-
 .../EventListener/ValidationListenerTest.php  |    8 +-
 .../Type/BaseValidatorExtensionTest.php       |   38 +-
 .../Type/FormTypeValidatorExtensionTest.php   |   28 +-
 .../Type/SubmitTypeValidatorExtensionTest.php |    2 +-
 .../Validator/Util/ServerParamsTest.php       |   36 +-
 .../Validator/ValidatorExtensionTest.php      |    2 +-
 .../Validator/ValidatorTypeGuesserTest.php    |   30 +-
 .../ViolationMapper/ViolationMapperTest.php   | 2274 ++++++++---------
 .../ViolationMapper/ViolationPathTest.php     |  142 +-
 .../Form/Tests/Fixtures/AuthorType.php        |    4 +-
 .../Form/Tests/Fixtures/ChoiceSubType.php     |    6 +-
 .../Tests/Fixtures/ChoiceTypeExtension.php    |    4 +-
 .../Form/Tests/Fixtures/CustomArrayObject.php |    2 +-
 .../Tests/Fixtures/FixedFilterListener.php    |   14 +-
 .../Tests/Fixtures/FooTypeBarExtension.php    |    6 +-
 .../Fixtures/LazyChoiceTypeExtension.php      |    4 +-
 .../Form/Tests/Fixtures/TestExtension.php     |    8 +-
 .../Component/Form/Tests/FormBuilderTest.php  |   10 +-
 .../Component/Form/Tests/FormConfigTest.php   |   54 +-
 .../Form/Tests/FormErrorIteratorTest.php      |   24 +-
 .../Component/Form/Tests/FormFactoryTest.php  |   72 +-
 .../Component/Form/Tests/FormRegistryTest.php |   16 +-
 .../Component/Form/Tests/Guess/GuessTest.php  |    2 +-
 .../Form/Tests/NativeRequestHandlerTest.php   |  122 +-
 .../Form/Tests/ResolvedFormTypeTest.php       |   52 +-
 .../Component/Form/Tests/SimpleFormTest.php   |  154 +-
 .../Form/Tests/Util/OrderedHashMapTest.php    |   34 +-
 .../Form/Tests/Util/StringUtilTest.php        |   80 +-
 .../Form/Util/OptionsResolverWrapper.php      |    4 +-
 .../Component/Form/Util/OrderedHashMap.php    |   10 +-
 .../Form/Util/OrderedHashMapIterator.php      |    2 +-
 .../Component/Form/Util/StringUtil.php        |    2 +-
 .../Component/HttpFoundation/AcceptHeader.php |    2 +-
 .../HttpFoundation/AcceptHeaderItem.php       |    6 +-
 .../HttpFoundation/BinaryFileResponse.php     |    6 +-
 .../Component/HttpFoundation/Cookie.php       |    6 +-
 .../ExpressionRequestMatcher.php              |    4 +-
 .../File/MimeType/ExtensionGuesser.php        |    2 +-
 .../File/MimeType/MimeTypeGuesser.php         |    2 +-
 .../HttpFoundation/File/UploadedFile.php      |    4 +-
 .../Component/HttpFoundation/FileBag.php      |   16 +-
 .../Component/HttpFoundation/HeaderBag.php    |   22 +-
 .../Component/HttpFoundation/IpUtils.php      |    4 +-
 .../Component/HttpFoundation/JsonResponse.php |   12 +-
 .../Component/HttpFoundation/ParameterBag.php |   12 +-
 .../HttpFoundation/RedirectResponse.php       |    4 +-
 .../Component/HttpFoundation/Request.php      |  114 +-
 .../HttpFoundation/RequestMatcher.php         |   16 +-
 .../Component/HttpFoundation/RequestStack.php |    2 +-
 .../Component/HttpFoundation/Response.php     |   26 +-
 .../HttpFoundation/ResponseHeaderBag.php      |   32 +-
 .../Component/HttpFoundation/ServerBag.php    |    4 +-
 .../Session/Attribute/AttributeBag.php        |    6 +-
 .../Attribute/NamespacedAttributeBag.php      |    4 +-
 .../Session/Flash/AutoExpireFlashBag.php      |   14 +-
 .../HttpFoundation/Session/Flash/FlashBag.php |    8 +-
 .../Session/Flash/FlashBagInterface.php       |    4 +-
 .../HttpFoundation/Session/Session.php        |    2 +-
 .../Handler/AbstractSessionHandler.php        |    4 +-
 .../Handler/MemcacheSessionHandler.php        |    4 +-
 .../Handler/MemcachedSessionHandler.php       |    4 +-
 .../Storage/Handler/MongoDbSessionHandler.php |   40 +-
 .../Storage/Handler/PdoSessionHandler.php     |   10 +-
 .../Session/Storage/MetadataBag.php           |    2 +-
 .../Storage/MockArraySessionStorage.php       |   10 +-
 .../Storage/MockFileSessionStorage.php        |    4 +-
 .../Session/Storage/NativeSessionStorage.php  |   20 +-
 .../HttpFoundation/StreamedResponse.php       |    4 +-
 .../Tests/AcceptHeaderItemTest.php            |   54 +-
 .../HttpFoundation/Tests/AcceptHeaderTest.php |   42 +-
 .../Tests/ApacheRequestTest.php               |   52 +-
 .../Tests/BinaryFileResponseTest.php          |   82 +-
 .../HttpFoundation/Tests/CookieTest.php       |   22 +-
 .../Tests/ExpressionRequestMatcherTest.php    |   20 +-
 .../HttpFoundation/Tests/File/FileTest.php    |   16 +-
 .../Tests/File/UploadedFileTest.php           |   14 +-
 .../HttpFoundation/Tests/FileBagTest.php      |  114 +-
 .../HttpFoundation/Tests/HeaderBagTest.php    |   54 +-
 .../HttpFoundation/Tests/IpUtilsTest.php      |   66 +-
 .../HttpFoundation/Tests/JsonResponseTest.php |   38 +-
 .../HttpFoundation/Tests/ParameterBagTest.php |   72 +-
 .../Tests/RedirectResponseTest.php            |    4 +-
 .../Tests/RequestMatcherTest.php              |   40 +-
 .../HttpFoundation/Tests/RequestTest.php      |  850 +++---
 .../Tests/ResponseFunctionalTest.php          |   10 +-
 .../Tests/ResponseHeaderBagTest.php           |   98 +-
 .../HttpFoundation/Tests/ResponseTest.php     |  114 +-
 .../HttpFoundation/Tests/ServerBagTest.php    |   66 +-
 .../Session/Attribute/AttributeBagTest.php    |   48 +-
 .../Attribute/NamespacedAttributeBagTest.php  |   62 +-
 .../Session/Flash/AutoExpireFlashBagTest.php  |   70 +-
 .../Tests/Session/Flash/FlashBagTest.php      |   64 +-
 .../Tests/Session/SessionTest.php             |   26 +-
 .../Handler/AbstractSessionHandlerTest.php    |   12 +-
 .../Handler/MemcacheSessionHandlerTest.php    |   14 +-
 .../Handler/MemcachedSessionHandlerTest.php   |   14 +-
 .../Handler/MongoDbSessionHandlerTest.php     |   34 +-
 .../Handler/NativeFileSessionHandlerTest.php  |   14 +-
 .../Handler/NullSessionHandlerTest.php        |    2 +-
 .../Storage/Handler/PdoSessionHandlerTest.php |   34 +-
 .../Handler/StrictSessionHandlerTest.php      |    2 +-
 .../Tests/Session/Storage/MetadataBagTest.php |   18 +-
 .../Storage/MockArraySessionStorageTest.php   |   20 +-
 .../Storage/MockFileSessionStorageTest.php    |    2 +-
 .../Storage/NativeSessionStorageTest.php      |   18 +-
 .../Storage/PhpBridgeSessionStorageTest.php   |    4 +-
 .../Storage/Proxy/SessionHandlerProxyTest.php |    4 +-
 .../Tests/StreamedResponseTest.php            |    6 +-
 .../Component/HttpKernel/Bundle/Bundle.php    |    2 +-
 .../CacheClearer/ChainCacheClearer.php        |    2 +-
 .../CacheClearer/Psr6CacheClearer.php         |    4 +-
 .../CacheWarmer/CacheWarmerAggregate.php      |    6 +-
 src/Symfony/Component/HttpKernel/Client.php   |    4 +-
 .../Config/EnvParametersResource.php          |    8 +-
 .../HttpKernel/Config/FileLocator.php         |    2 +-
 .../Controller/ArgumentResolver.php           |    8 +-
 .../ContainerControllerResolver.php           |    2 +-
 .../Controller/ControllerReference.php        |    6 +-
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 .../DataCollector/ConfigDataCollector.php     |    8 +-
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 .../DataCollector/EventDataCollector.php      |   10 +-
 .../DataCollector/ExceptionDataCollector.php  |    6 +-
 .../DataCollector/LoggerDataCollector.php     |   48 +-
 .../DataCollector/MemoryDataCollector.php     |    4 +-
 .../DataCollector/RequestDataCollector.php    |   42 +-
 .../DataCollector/RouterDataCollector.php     |    4 +-
 .../DataCollector/TimeDataCollector.php       |    8 +-
 .../DataCollector/Util/ValueExporter.php      |    2 +-
 .../HttpKernel/Debug/FileLinkFormatter.php    |   10 +-
 .../AddAnnotatedClassesToCachePass.php        |   12 +-
 .../DependencyInjection/Extension.php         |    4 +-
 .../FragmentRendererPass.php                  |    2 +-
 .../LazyLoadingFragmentHandler.php            |    8 +-
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 ...RegisterControllerArgumentLocatorsPass.php |   14 +-
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 .../EventListener/ProfilerListener.php        |    8 +-
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 .../Exception/BadRequestHttpException.php     |    2 +-
 .../Exception/ConflictHttpException.php       |    2 +-
 .../Exception/GoneHttpException.php           |    2 +-
 .../HttpKernel/Exception/HttpException.php    |    2 +-
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 .../MethodNotAllowedHttpException.php         |    2 +-
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 .../ServiceUnavailableHttpException.php       |    4 +-
 .../TooManyRequestsHttpException.php          |    4 +-
 .../Exception/UnauthorizedHttpException.php   |    2 +-
 .../UnprocessableEntityHttpException.php      |    2 +-
 .../UnsupportedMediaTypeHttpException.php     |    2 +-
 .../AbstractSurrogateFragmentRenderer.php     |    2 +-
 .../HttpKernel/Fragment/FragmentHandler.php   |    6 +-
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 .../Fragment/HIncludeFragmentRenderer.php     |    4 +-
 .../Fragment/InlineFragmentRenderer.php       |    8 +-
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 .../Component/HttpKernel/HttpCache/Esi.php    |    2 +-
 .../HttpKernel/HttpCache/HttpCache.php        |   30 +-
 .../HttpCache/ResponseCacheStrategy.php       |    4 +-
 .../Component/HttpKernel/HttpCache/Ssi.php    |    2 +-
 .../Component/HttpKernel/HttpCache/Store.php  |   20 +-
 .../HttpCache/SubRequestHandler.php           |   14 +-
 .../Component/HttpKernel/HttpKernel.php       |    2 +-
 src/Symfony/Component/HttpKernel/Kernel.php   |   60 +-
 .../Component/HttpKernel/Log/Logger.php       |   10 +-
 .../Profiler/FileProfilerStorage.php          |   16 +-
 .../Component/HttpKernel/Profiler/Profile.php |   14 +-
 .../HttpKernel/Profiler/Profiler.php          |    8 +-
 .../CacheClearer/ChainCacheClearerTest.php    |    2 +-
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 .../CacheWarmer/CacheWarmerAggregateTest.php  |    8 +-
 .../Component/HttpKernel/Tests/ClientTest.php |   20 +-
 .../Config/EnvParametersResourceTest.php      |    8 +-
 .../ServiceValueResolverTest.php              |   54 +-
 .../Tests/Controller/ArgumentResolverTest.php |   78 +-
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 .../RequestDataCollectorTest.php              |   96 +-
 .../Debug/TraceableEventDispatcherTest.php    |   10 +-
 .../AddAnnotatedClassesToCachePassTest.php    |   80 +-
 ...ontrollerArgumentValueResolverPassTest.php |   20 +-
 .../FragmentRendererPassTest.php              |   10 +-
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 .../ServicesResetterTest.php                  |    6 +-
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 .../EventListener/ExceptionListenerTest.php   |   10 +-
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 .../EventListener/ResponseListenerTest.php    |    8 +-
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 .../EventListener/SessionListenerTest.php     |    2 +-
 .../EventListener/SurrogateListenerTest.php   |    6 +-
 .../EventListener/TestSessionListenerTest.php |   18 +-
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 .../Fragment/SsiFragmentRendererTest.php      |   10 +-
 .../HttpKernel/Tests/HttpCache/EsiTest.php    |    6 +-
 .../Tests/HttpCache/HttpCacheTest.php         |  348 +--
 .../Tests/HttpCache/HttpCacheTestCase.php     |   16 +-
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 .../Tests/HttpCache/TestHttpKernel.php        |    8 +-
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 .../HttpKernel/Tests/HttpKernelTest.php       |   46 +-
 .../Component/HttpKernel/Tests/KernelTest.php |  148 +-
 .../HttpKernel/Tests/Log/LoggerTest.php       |   70 +-
 .../Component/HttpKernel/Tests/Logger.php     |   38 +-
 .../Profiler/FileProfilerStorageTest.php      |    6 +-
 .../Tests/Profiler/ProfilerTest.php           |    2 +-
 .../HttpKernel/Tests/TestHttpKernel.php       |    4 +-
 .../Component/HttpKernel/UriSigner.php        |    6 +-
 src/Symfony/Component/Inflector/Inflector.php |   72 +-
 .../Inflector/Tests/InflectorTest.php         |  252 +-
 .../Component/Intl/Collator/Collator.php      |    4 +-
 .../Data/Bundle/Reader/BundleEntryReader.php  |    4 +-
 .../Data/Generator/CurrencyDataGenerator.php  |   24 +-
 .../Intl/Data/Generator/GeneratorConfig.php   |    2 +-
 .../Data/Generator/LanguageDataGenerator.php  |   18 +-
 .../Data/Generator/LocaleDataGenerator.php    |   20 +-
 .../Data/Generator/RegionDataGenerator.php    |   18 +-
 .../Data/Generator/ScriptDataGenerator.php    |   12 +-
 .../Data/Provider/CurrencyDataProvider.php    |   20 +-
 .../Data/Provider/LanguageDataProvider.php    |   10 +-
 .../Intl/Data/Provider/LocaleDataProvider.php |    8 +-
 .../Intl/Data/Provider/RegionDataProvider.php |    6 +-
 .../Intl/Data/Provider/ScriptDataProvider.php |    6 +-
 .../Intl/Data/Util/LocaleScanner.php          |    2 +-
 .../Component/Intl/Data/Util/RingBuffer.php   |    4 +-
 .../DateFormat/AmPmTransformer.php            |    4 +-
 .../DateFormat/DayOfWeekTransformer.php       |    2 +-
 .../DateFormat/DayOfYearTransformer.php       |    2 +-
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 .../DateFormat/Hour2401Transformer.php        |    4 +-
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 .../DateFormat/MonthTransformer.php           |   18 +-
 .../DateFormat/QuarterTransformer.php         |    4 +-
 .../DateFormat/SecondTransformer.php          |    4 +-
 .../DateFormat/TimezoneTransformer.php        |    8 +-
 .../DateFormat/YearTransformer.php            |    4 +-
 .../Intl/DateFormatter/IntlDateFormatter.php  |   10 +-
 .../Component/Intl/Globals/IntlGlobals.php    |    4 +-
 .../Intl/NumberFormatter/NumberFormatter.php  |   42 +-
 .../Intl/ResourceBundle/CurrencyBundle.php    |    4 +-
 .../Intl/ResourceBundle/LanguageBundle.php    |    6 +-
 .../Intl/ResourceBundle/LocaleBundle.php      |    4 +-
 .../Intl/ResourceBundle/RegionBundle.php      |    4 +-
 .../Intl/Resources/bin/update-data.php        |    8 +-
 .../Tests/Collator/AbstractCollatorTest.php   |   28 +-
 .../Bundle/Reader/BundleEntryReaderTest.php   |  106 +-
 .../Tests/Data/Bundle/Reader/Fixtures/en.php  |    4 +-
 .../Reader/Fixtures/invalid_directory/en.php  |    4 +-
 .../Data/Bundle/Reader/Fixtures/php/en.php    |    4 +-
 .../Tests/Data/Bundle/Writer/Fixtures/en.php  |   16 +-
 .../Tests/Data/Bundle/Writer/Fixtures/rb.php  |    8 +-
 .../Bundle/Writer/JsonBundleWriterTest.php    |   14 +-
 .../Bundle/Writer/PhpBundleWriterTest.php     |   14 +-
 .../Bundle/Writer/TextBundleWriterTest.php    |   44 +-
 .../AbstractCurrencyDataProviderTest.php      |   26 +-
 .../Provider/AbstractDataProviderTest.php     |   14 +-
 .../AbstractLanguageDataProviderTest.php      |   12 +-
 .../AbstractRegionDataProviderTest.php        |    4 +-
 .../AbstractScriptDataProviderTest.php        |    4 +-
 .../Tests/Data/Util/LocaleScannerTest.php     |    4 +-
 .../AbstractIntlDateFormatterTest.php         |  820 +++---
 .../DateFormatter/IntlDateFormatterTest.php   |    8 +-
 .../Tests/Globals/AbstractIntlGlobalsTest.php |   14 +-
 .../Intl/Tests/Locale/LocaleTest.php          |   10 +-
 .../Tests/Locale/Verification/LocaleTest.php  |    2 +-
 .../Component/Intl/Tests/LocaleTest.php       |   26 +-
 .../AbstractNumberFormatterTest.php           |  448 ++--
 .../Intl/Tests/Util/IcuVersionTest.php        |  120 +-
 .../Component/Intl/Tests/Util/VersionTest.php |   80 +-
 .../Ldap/Adapter/AbstractConnection.php       |   10 +-
 .../Component/Ldap/Adapter/AbstractQuery.php  |   12 +-
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 .../Ldap/Adapter/ExtLdap/Collection.php       |    4 +-
 .../Component/Ldap/Adapter/ExtLdap/Query.php  |    2 +-
 src/Symfony/Component/Ldap/Entry.php          |    2 +-
 src/Symfony/Component/Ldap/Ldap.php           |    8 +-
 src/Symfony/Component/Ldap/LdapClient.php     |   22 +-
 src/Symfony/Component/Ldap/LdapInterface.php  |    2 +-
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 .../Tests/Adapter/ExtLdap/LdapManagerTest.php |   18 +-
 .../Component/Ldap/Tests/LdapClientTest.php   |  130 +-
 src/Symfony/Component/Ldap/Tests/LdapTest.php |    4 +-
 .../Component/Ldap/Tests/LdapTestCase.php     |    4 +-
 src/Symfony/Component/Lock/Key.php            |    2 +-
 src/Symfony/Component/Lock/Lock.php           |   14 +-
 .../Component/Lock/Store/CombinedStore.php    |   12 +-
 .../Component/Lock/Store/MemcachedStore.php   |    6 +-
 .../Component/Lock/Store/RedisStore.php       |   12 +-
 .../Lock/Store/RetryTillSaveStore.php         |    2 +-
 src/Symfony/Component/Lock/Tests/LockTest.php |   18 +-
 .../Tests/Store/BlockingStoreTestTrait.php    |    8 +-
 .../Lock/Tests/Store/CombinedStoreTest.php    |    6 +-
 .../Lock/Tests/Store/RedisArrayStoreTest.php  |    2 +-
 .../Tests/Strategy/ConsensusStrategyTest.php  |   64 +-
 .../Tests/Strategy/UnanimousStrategyTest.php  |   64 +-
 .../OptionsResolver/OptionsResolver.php       |   52 +-
 .../Debug/OptionsResolverIntrospectorTest.php |    6 +-
 .../Tests/OptionsResolverTest.php             |  344 +--
 .../Component/Process/ExecutableFinder.php    |    8 +-
 src/Symfony/Component/Process/InputStream.php |    2 +-
 .../Component/Process/PhpExecutableFinder.php |    6 +-
 src/Symfony/Component/Process/PhpProcess.php  |    2 +-
 .../Component/Process/Pipes/AbstractPipes.php |   14 +-
 .../Component/Process/Pipes/UnixPipes.php     |   44 +-
 .../Component/Process/Pipes/WindowsPipes.php  |   34 +-
 src/Symfony/Component/Process/Process.php     |   32 +-
 .../Component/Process/ProcessBuilder.php      |   10 +-
 .../Process/Tests/ExecutableFinderTest.php    |    2 +-
 .../Process/Tests/PhpExecutableFinderTest.php |    6 +-
 .../PipeStdinInStdoutStdErrStreamSelect.php   |    8 +-
 .../Process/Tests/ProcessBuilderTest.php      |   32 +-
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 .../Component/Process/Tests/ProcessTest.php   |  206 +-
 .../Process/Tests/ProcessUtilsTest.php        |   34 +-
 .../PropertyAccess/PropertyAccessor.php       |   44 +-
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 .../PropertyAccess/PropertyPathBuilder.php    |    4 +-
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 .../Fixtures/TestSingularAndPluralProps.php   |    4 +-
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 .../Tests/TestPluralAdderRemoverAndSetter.php |    6 +-
 ...rRemoverAndSetterSameSingularAndPlural.php |    6 +-
 .../Extractor/PhpDocExtractor.php             |   22 +-
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 .../PropertyDescriptionExtractorInterface.php |    4 +-
 .../PropertyInfoCacheExtractor.php            |   30 +-
 .../PropertyInfo/PropertyInfoExtractor.php    |   28 +-
 .../PropertyListExtractorInterface.php        |    2 +-
 .../PropertyTypeExtractorInterface.php        |    2 +-
 .../AbstractPropertyInfoExtractorTest.php     |   14 +-
 .../PropertyInfoPassTest.php                  |   32 +-
 .../Tests/Extractor/PhpDocExtractorTest.php   |  214 +-
 .../Extractor/ReflectionExtractorTest.php     |  142 +-
 .../Extractor/SerializerExtractorTest.php     |    4 +-
 .../Tests/Fixtures/DummyExtractor.php         |   16 +-
 .../Tests/Fixtures/NullExtractor.php          |   12 +-
 src/Symfony/Component/PropertyInfo/Type.php   |    4 +-
 .../PropertyInfo/Util/PhpDocTypeHelper.php    |    8 +-
 .../Component/Routing/Annotation/Route.php    |   14 +-
 .../Component/Routing/CompiledRoute.php       |    8 +-
 .../RoutingResolverPass.php                   |    2 +-
 .../Exception/MethodNotAllowedException.php   |    2 +-
 .../Dumper/GeneratorDumperInterface.php       |    2 +-
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 .../Routing/Generator/UrlGenerator.php        |   22 +-
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 src/Symfony/Component/Routing/Route.php       |   24 +-
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 src/Symfony/Component/Routing/Router.php      |   22 +-
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 .../Validator/Mapping/ClassMetadata.php       |   14 +-
 .../Factory/LazyLoadingMetadataFactory.php    |    2 +-
 .../Validator/Mapping/GenericMetadata.php     |   14 +-
 .../Mapping/Loader/AbstractLoader.php         |    2 +-
 .../Validator/Mapping/Loader/FilesLoader.php  |    2 +-
 .../Mapping/Loader/XmlFileLoader.php          |   14 +-
 .../Mapping/Loader/YamlFileLoader.php         |    4 +-
 .../Validator/Mapping/MemberMetadata.php      |    6 +-
 .../Test/ConstraintValidatorTestCase.php      |    8 +-
 .../Validator/Tests/ConstraintTest.php        |   62 +-
 .../Tests/ConstraintViolationListTest.php     |   30 +-
 .../Tests/ConstraintViolationTest.php         |   18 +-
 .../AbstractComparisonValidatorTestCase.php   |   26 +-
 .../Validator/Tests/Constraints/AllTest.php   |    8 +-
 .../Tests/Constraints/AllValidatorTest.php    |   22 +-
 .../Tests/Constraints/BicValidatorTest.php    |   58 +-
 .../Tests/Constraints/BlankValidatorTest.php  |   16 +-
 .../Constraints/CallbackValidatorTest.php     |   52 +-
 .../Constraints/CardSchemeValidatorTest.php   |  138 +-
 .../Tests/Constraints/ChoiceValidatorTest.php |  116 +-
 .../Tests/Constraints/CollectionTest.php      |   60 +-
 .../Constraints/CollectionValidatorTest.php   |  232 +-
 .../Tests/Constraints/CompositeTest.php       |   98 +-
 .../Tests/Constraints/CountValidatorTest.php  |   50 +-
 .../Constraints/CountryValidatorTest.php      |   22 +-
 .../Constraints/CurrencyValidatorTest.php     |   26 +-
 .../Constraints/DateTimeValidatorTest.php     |   46 +-
 .../Tests/Constraints/DateValidatorTest.php   |   30 +-
 .../Tests/Constraints/EmailValidatorTest.php  |  168 +-
 .../Constraints/EqualToValidatorTest.php      |   42 +-
 .../Constraints/ExpressionValidatorTest.php   |   32 +-
 .../Validator/Tests/Constraints/FileTest.php  |   74 +-
 .../Constraints/FileValidatorPathTest.php     |    4 +-
 .../Tests/Constraints/FileValidatorTest.php   |  196 +-
 .../GreaterThanOrEqualValidatorTest.php       |   48 +-
 .../Constraints/GreaterThanValidatorTest.php  |   52 +-
 .../Tests/Constraints/GroupSequenceTest.php   |    8 +-
 .../Tests/Constraints/IbanValidatorTest.php   |  638 ++---
 .../Constraints/IdenticalToValidatorTest.php  |   38 +-
 .../Tests/Constraints/ImageValidatorTest.php  |   92 +-
 .../Tests/Constraints/IpValidatorTest.php     |  204 +-
 .../Constraints/IsFalseValidatorTest.php      |    4 +-
 .../Tests/Constraints/IsNullValidatorTest.php |   24 +-
 .../Tests/Constraints/IsTrueValidatorTest.php |    4 +-
 .../Tests/Constraints/IsbnValidatorTest.php   |  136 +-
 .../Tests/Constraints/IssnValidatorTest.php   |   88 +-
 .../Constraints/LanguageValidatorTest.php     |   26 +-
 .../Tests/Constraints/LengthValidatorTest.php |   88 +-
 .../LessThanOrEqualValidatorTest.php          |   54 +-
 .../Constraints/LessThanValidatorTest.php     |   50 +-
 .../Tests/Constraints/LocaleValidatorTest.php |   28 +-
 .../Tests/Constraints/LuhnValidatorTest.php   |   72 +-
 .../Constraints/NotBlankValidatorTest.php     |   32 +-
 .../Constraints/NotEqualToValidatorTest.php   |   42 +-
 .../NotIdenticalToValidatorTest.php           |   42 +-
 .../Constraints/NotNullValidatorTest.php      |   16 +-
 .../Tests/Constraints/RangeValidatorTest.php  |  148 +-
 .../Validator/Tests/Constraints/RegexTest.php |   52 +-
 .../Tests/Constraints/RegexValidatorTest.php  |   32 +-
 .../Tests/Constraints/TimeValidatorTest.php   |   32 +-
 .../Tests/Constraints/TypeValidatorTest.php   |  134 +-
 .../Tests/Constraints/UrlValidatorTest.php    |  242 +-
 .../Tests/Constraints/UuidValidatorTest.php   |  148 +-
 .../Validator/Tests/Constraints/ValidTest.php |    4 +-
 .../Tests/Constraints/ValidValidatorTest.php  |    4 +-
 .../ValidatorDataCollectorTest.php            |    8 +-
 .../AddConstraintValidatorsPassTest.php       |   10 +-
 .../AddValidatorInitializersPassTest.php      |    4 +-
 .../Validator/Tests/Fixtures/ConstraintA.php  |    2 +-
 .../Tests/Fixtures/ConstraintAValidator.php   |    2 +-
 .../Validator/Tests/Fixtures/ConstraintB.php  |    2 +-
 .../Validator/Tests/Fixtures/ConstraintC.php  |    4 +-
 .../Tests/Fixtures/ConstraintWithValue.php    |    2 +-
 .../Fixtures/ConstraintWithValueAsDefault.php |    2 +-
 .../Tests/Fixtures/CustomArrayObject.php      |    2 +-
 .../Tests/Fixtures/EntityStaticCar.php        |    2 +-
 .../Tests/Fixtures/EntityStaticCarTurbo.php   |    2 +-
 .../Tests/Fixtures/EntityStaticVehicle.php    |    2 +-
 .../Tests/Fixtures/FailingConstraint.php      |    2 +-
 .../Fixtures/FailingConstraintValidator.php   |    2 +-
 .../Tests/Fixtures/FakeClassMetadata.php      |    2 +-
 .../Tests/Fixtures/FakeMetadataFactory.php    |    2 +-
 .../Fixtures/GroupSequenceProviderEntity.php  |    2 +-
 .../Tests/Mapping/Cache/AbstractCacheTest.php |    6 +-
 .../Tests/Mapping/ClassMetadataTest.php       |  112 +-
 .../LazyLoadingMetadataFactoryTest.php        |   56 +-
 .../Mapping/Loader/AnnotationLoaderTest.php   |   52 +-
 .../Tests/Mapping/Loader/FilesLoaderTest.php  |    4 +-
 .../Tests/Mapping/Loader/LoaderChainTest.php  |   12 +-
 .../Mapping/Loader/XmlFileLoaderTest.php      |   28 +-
 .../Mapping/Loader/YamlFileLoaderTest.php     |   38 +-
 .../Tests/Mapping/MemberMetadataTest.php      |    8 +-
 .../Validator/Tests/Util/PropertyPathTest.php |   14 +-
 .../Tests/Validator/AbstractTest.php          |  162 +-
 .../Tests/Validator/AbstractValidatorTest.php |  338 +--
 .../Validator/RecursiveValidatorTest.php      |   46 +-
 .../Validator/TraceableValidatorTest.php      |   16 +-
 .../Validator/Tests/ValidatorBuilderTest.php  |    8 +-
 .../RecursiveContextualValidator.php          |   10 +-
 .../Validator/RecursiveValidator.php          |    2 +-
 .../Validator/TraceableValidator.php          |    8 +-
 .../Component/Validator/ValidatorBuilder.php  |   10 +-
 .../Component/VarDumper/Caster/AmqpCaster.php |   50 +-
 .../Component/VarDumper/Caster/ArgsStub.php   |   12 +-
 .../Component/VarDumper/Caster/Caster.php     |   10 +-
 .../Component/VarDumper/Caster/ClassStub.php  |    6 +-
 .../Component/VarDumper/Caster/DOMCaster.php  |   78 +-
 .../Component/VarDumper/Caster/DateCaster.php |   10 +-
 .../VarDumper/Caster/DoctrineCaster.php       |    6 +-
 .../VarDumper/Caster/ExceptionCaster.php      |   34 +-
 .../Component/VarDumper/Caster/LinkStub.php   |    2 +-
 .../Component/VarDumper/Caster/PdoCaster.php  |   28 +-
 .../VarDumper/Caster/PgSqlCaster.php          |   20 +-
 .../VarDumper/Caster/RedisCaster.php          |   20 +-
 .../VarDumper/Caster/ReflectionCaster.php     |   52 +-
 .../Component/VarDumper/Caster/SplCaster.php  |   44 +-
 .../Component/VarDumper/Caster/StubCaster.php |    6 +-
 .../VarDumper/Caster/SymfonyCaster.php        |    4 +-
 .../VarDumper/Caster/XmlReaderCaster.php      |   16 +-
 .../VarDumper/Caster/XmlResourceCaster.php    |    4 +-
 .../VarDumper/Cloner/AbstractCloner.php       |  234 +-
 .../Component/VarDumper/Cloner/Cursor.php     |    2 +-
 .../Component/VarDumper/Cloner/Data.php       |   14 +-
 .../Component/VarDumper/Cloner/Stub.php       |    4 +-
 .../Component/VarDumper/Cloner/VarCloner.php  |   32 +-
 .../VarDumper/Dumper/AbstractDumper.php       |    2 +-
 .../Component/VarDumper/Dumper/CliDumper.php  |   34 +-
 .../Component/VarDumper/Dumper/HtmlDumper.php |   18 +-
 .../VarDumper/Tests/Caster/CasterTest.php     |  124 +-
 .../VarDumper/Tests/Caster/DateCasterTest.php |  154 +-
 .../Tests/Caster/ExceptionCasterTest.php      |   16 +-
 .../VarDumper/Tests/Caster/PdoCasterTest.php  |    4 +-
 .../Tests/Caster/ReflectionCasterTest.php     |    6 +-
 .../VarDumper/Tests/Caster/SplCasterTest.php  |   28 +-
 .../VarDumper/Tests/Caster/StubCasterTest.php |   26 +-
 .../Tests/Caster/XmlReaderCasterTest.php      |   68 +-
 .../VarDumper/Tests/Cloner/DataTest.php       |   16 +-
 .../VarDumper/Tests/Cloner/VarClonerTest.php  |   44 +-
 .../VarDumper/Tests/Dumper/CliDumperTest.php  |   36 +-
 .../VarDumper/Tests/Dumper/FunctionsTest.php  |    2 +-
 .../VarDumper/Tests/Dumper/HtmlDumperTest.php |    4 +-
 .../Tests/Test/VarDumperTestTraitTest.php     |    2 +-
 src/Symfony/Component/VarDumper/VarDumper.php |    2 +-
 .../EventListener/AddLinkHeaderListener.php   |    2 +-
 .../WebLink/HttpHeaderSerializer.php          |    4 +-
 .../AddLinkHeaderListenerTest.php             |   10 +-
 .../Tests/HttpHeaderSerializerTest.php        |    8 +-
 src/Symfony/Component/Workflow/Definition.php |    4 +-
 .../Component/Workflow/DefinitionBuilder.php  |   10 +-
 .../Workflow/Dumper/DumperInterface.php       |    2 +-
 .../Workflow/Dumper/GraphvizDumper.php        |   42 +-
 .../Dumper/StateMachineGraphvizDumper.php     |    8 +-
 .../EventListener/AuditTrailListener.php      |   10 +-
 .../Workflow/EventListener/GuardListener.php  |    4 +-
 src/Symfony/Component/Workflow/Marking.php    |    4 +-
 .../MultipleStateMarkingStore.php             |    2 +-
 .../MarkingStore/SingleStateMarkingStore.php  |    2 +-
 src/Symfony/Component/Workflow/Registry.php   |    4 +-
 .../Workflow/Tests/DefinitionBuilderTest.php  |    8 +-
 .../Workflow/Tests/DefinitionTest.php         |   16 +-
 .../ValidateWorkflowsPassTest.php             |   16 +-
 .../Tests/Dumper/GraphvizDumperTest.php       |   16 +-
 .../Dumper/StateMachineGraphvizDumperTest.php |    2 +-
 .../EventListener/AuditTrailListenerTest.php  |    8 +-
 .../Tests/EventListener/GuardListenerTest.php |   12 +-
 .../MultipleStateMarkingStoreTest.php         |    2 +-
 .../Component/Workflow/Tests/MarkingTest.php  |   10 +-
 .../Component/Workflow/Tests/RegistryTest.php |   10 +-
 .../Workflow/Tests/TransitionTest.php         |    4 +-
 .../Validator/StateMachineValidatorTest.php   |   12 +-
 .../Tests/Validator/WorkflowValidatorTest.php |    4 +-
 .../Workflow/Tests/WorkflowBuilderTrait.php   |   14 +-
 .../Component/Workflow/Tests/WorkflowTest.php |   52 +-
 .../Validator/StateMachineValidator.php       |    2 +-
 .../Workflow/Validator/WorkflowValidator.php  |    2 +-
 src/Symfony/Component/Workflow/Workflow.php   |    2 +-
 .../Component/Yaml/Command/LintCommand.php    |   10 +-
 src/Symfony/Component/Yaml/Escaper.php        |   10 +-
 src/Symfony/Component/Yaml/Inline.php         |   38 +-
 src/Symfony/Component/Yaml/Parser.php         |   34 +-
 .../Yaml/Tests/Command/LintCommandTest.php    |   14 +-
 .../Component/Yaml/Tests/DumperTest.php       |  130 +-
 .../Component/Yaml/Tests/InlineTest.php       |  500 ++--
 .../Component/Yaml/Tests/ParserTest.php       |  722 +++---
 src/Symfony/Component/Yaml/Tests/YamlTest.php |    6 +-
 2234 files changed, 32060 insertions(+), 32060 deletions(-)

diff --git a/.php_cs.dist b/.php_cs.dist
index 14762d37812d..8523be670698 100644
--- a/.php_cs.dist
+++ b/.php_cs.dist
@@ -5,26 +5,26 @@ if (!file_exists(__DIR__.'/src')) {
 }
 
 return PhpCsFixer\Config::create()
-    ->setRules(array(
+    ->setRules([
         '@Symfony' => true,
         '@Symfony:risky' => true,
         '@PHPUnit48Migration:risky' => true,
         'php_unit_no_expectation_annotation' => false, // part of `PHPUnitXYMigration:risky` ruleset, to be enabled when PHPUnit 4.x support will be dropped, as we don't want to rewrite exceptions handling twice
-        'array_syntax' => array('syntax' => 'short'),
+        'array_syntax' => ['syntax' => 'short'],
         'fopen_flags' => false,
         'ordered_imports' => true,
         'protected_to_private' => false,
         // Part of @Symfony:risky in PHP-CS-Fixer 2.13.0. To be removed from the config file once upgrading
-        'native_function_invocation' => array('include' => array('@compiler_optimized'), 'scope' => 'namespaced'),
+        'native_function_invocation' => ['include' => ['@compiler_optimized'], 'scope' => 'namespaced'],
         // Part of future @Symfony ruleset in PHP-CS-Fixer To be removed from the config file once upgrading
-        'phpdoc_types_order' => array('null_adjustment' => 'always_last', 'sort_algorithm' => 'none'),
-    ))
+        'phpdoc_types_order' => ['null_adjustment' => 'always_last', 'sort_algorithm' => 'none'],
+    ])
     ->setRiskyAllowed(true)
     ->setFinder(
         PhpCsFixer\Finder::create()
             ->in(__DIR__.'/src')
-            ->append(array(__FILE__))
-            ->exclude(array(
+            ->append([__FILE__])
+            ->exclude([
                 // directories containing files with content that is autogenerated by `var_export`, which breaks CS in output code
                 'Symfony/Component/DependencyInjection/Tests/Fixtures',
                 'Symfony/Component/Routing/Tests/Fixtures/dumper',
@@ -38,7 +38,7 @@ return PhpCsFixer\Config::create()
                 'Symfony/Bundle/FrameworkBundle/Resources/views/Form',
                 // explicit trigger_error tests
                 'Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/',
-            ))
+            ])
             // Support for older PHPunit version
             ->notPath('Symfony/Bridge/PhpUnit/SymfonyTestsListener.php')
             // file content autogenerated by `var_export`
diff --git a/src/Symfony/Bridge/Doctrine/ContainerAwareEventManager.php b/src/Symfony/Bridge/Doctrine/ContainerAwareEventManager.php
index 20aaae85a1e4..66b99ecf6206 100644
--- a/src/Symfony/Bridge/Doctrine/ContainerAwareEventManager.php
+++ b/src/Symfony/Bridge/Doctrine/ContainerAwareEventManager.php
@@ -27,8 +27,8 @@ class ContainerAwareEventManager extends EventManager
      *
      * <event> => <listeners>
      */
-    private $listeners = array();
-    private $initialized = array();
+    private $listeners = [];
+    private $initialized = [];
     private $container;
 
     public function __construct(ContainerInterface $container)
diff --git a/src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php b/src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php
index d06271d8d1e5..19decb46e49c 100644
--- a/src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php
+++ b/src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php
@@ -33,7 +33,7 @@ class DoctrineDataCollector extends DataCollector
     /**
      * @var DebugStack[]
      */
-    private $loggers = array();
+    private $loggers = [];
 
     public function __construct(ManagerRegistry $registry)
     {
@@ -58,24 +58,24 @@ public function addLogger($name, DebugStack $logger)
      */
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
-        $queries = array();
+        $queries = [];
         foreach ($this->loggers as $name => $logger) {
             $queries[$name] = $this->sanitizeQueries($name, $logger->queries);
         }
 
-        $this->data = array(
+        $this->data = [
             'queries' => $queries,
             'connections' => $this->connections,
             'managers' => $this->managers,
-        );
+        ];
     }
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
 
         foreach ($this->loggers as $logger) {
-            $logger->queries = array();
+            $logger->queries = [];
             $logger->currentQuery = 0;
         }
     }
@@ -133,10 +133,10 @@ private function sanitizeQuery($connectionName, $query)
     {
         $query['explainable'] = true;
         if (null === $query['params']) {
-            $query['params'] = array();
+            $query['params'] = [];
         }
         if (!\is_array($query['params'])) {
-            $query['params'] = array($query['params']);
+            $query['params'] = [$query['params']];
         }
         foreach ($query['params'] as $j => $param) {
             if (isset($query['types'][$j])) {
@@ -184,12 +184,12 @@ private function sanitizeParam($var)
             $className = \get_class($var);
 
             return method_exists($var, '__toString') ?
-                array(sprintf('Object(%s): "%s"', $className, $var->__toString()), false) :
-                array(sprintf('Object(%s)', $className), false);
+                [sprintf('Object(%s): "%s"', $className, $var->__toString()), false] :
+                [sprintf('Object(%s)', $className), false];
         }
 
         if (\is_array($var)) {
-            $a = array();
+            $a = [];
             $original = true;
             foreach ($var as $k => $v) {
                 list($value, $orig) = $this->sanitizeParam($v);
@@ -197,13 +197,13 @@ private function sanitizeParam($var)
                 $a[$k] = $value;
             }
 
-            return array($a, $original);
+            return [$a, $original];
         }
 
         if (\is_resource($var)) {
-            return array(sprintf('Resource(%s)', get_resource_type($var)), false);
+            return [sprintf('Resource(%s)', get_resource_type($var)), false];
         }
 
-        return array($var, true);
+        return [$var, true];
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php
index 449d6fe41353..10436e44eb31 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php
@@ -27,12 +27,12 @@ abstract class AbstractDoctrineExtension extends Extension
     /**
      * Used inside metadata driver method to simplify aggregation of data.
      */
-    protected $aliasMap = array();
+    protected $aliasMap = [];
 
     /**
      * Used inside metadata driver method to simplify aggregation of data.
      */
-    protected $drivers = array();
+    protected $drivers = [];
 
     /**
      * @param array            $objectManager A configured object manager
@@ -46,10 +46,10 @@ protected function loadMappingInformation(array $objectManager, ContainerBuilder
             // automatically register bundle mappings
             foreach (array_keys($container->getParameter('kernel.bundles')) as $bundle) {
                 if (!isset($objectManager['mappings'][$bundle])) {
-                    $objectManager['mappings'][$bundle] = array(
+                    $objectManager['mappings'][$bundle] = [
                         'mapping' => true,
                         'is_bundle' => true,
-                    );
+                    ];
                 }
             }
         }
@@ -59,11 +59,11 @@ protected function loadMappingInformation(array $objectManager, ContainerBuilder
                 continue;
             }
 
-            $mappingConfig = array_replace(array(
+            $mappingConfig = array_replace([
                 'dir' => false,
                 'type' => false,
                 'prefix' => false,
-            ), (array) $mappingConfig);
+            ], (array) $mappingConfig);
 
             $mappingConfig['dir'] = $container->getParameterBag()->resolveValue($mappingConfig['dir']);
             // a bundle configuration is detected by realizing that the specified dir is not absolute and existing
@@ -153,7 +153,7 @@ protected function getMappingDriverBundleConfigDefaults(array $bundleConfig, \Re
         }
 
         if (!$bundleConfig['dir']) {
-            if (\in_array($bundleConfig['type'], array('annotation', 'staticphp'))) {
+            if (\in_array($bundleConfig['type'], ['annotation', 'staticphp'])) {
                 $bundleConfig['dir'] = $bundleDir.'/'.$this->getMappingObjectDefaultName();
             } else {
                 $bundleConfig['dir'] = $bundleDir.'/'.$this->getMappingResourceConfigDirectory();
@@ -197,25 +197,25 @@ protected function registerMappingDrivers($objectManager, ContainerBuilder $cont
                 }
                 $mappingDriverDef->setArguments($args);
             } elseif ('annotation' == $driverType) {
-                $mappingDriverDef = new Definition('%'.$this->getObjectManagerElementName('metadata.'.$driverType.'.class%'), array(
+                $mappingDriverDef = new Definition('%'.$this->getObjectManagerElementName('metadata.'.$driverType.'.class%'), [
                     new Reference($this->getObjectManagerElementName('metadata.annotation_reader')),
                     array_values($driverPaths),
-                ));
+                ]);
             } else {
-                $mappingDriverDef = new Definition('%'.$this->getObjectManagerElementName('metadata.'.$driverType.'.class%'), array(
+                $mappingDriverDef = new Definition('%'.$this->getObjectManagerElementName('metadata.'.$driverType.'.class%'), [
                     array_values($driverPaths),
-                ));
+                ]);
             }
             $mappingDriverDef->setPublic(false);
             if (false !== strpos($mappingDriverDef->getClass(), 'yml') || false !== strpos($mappingDriverDef->getClass(), 'xml')) {
-                $mappingDriverDef->setArguments(array(array_flip($driverPaths)));
-                $mappingDriverDef->addMethodCall('setGlobalBasename', array('mapping'));
+                $mappingDriverDef->setArguments([array_flip($driverPaths)]);
+                $mappingDriverDef->addMethodCall('setGlobalBasename', ['mapping']);
             }
 
             $container->setDefinition($mappingService, $mappingDriverDef);
 
             foreach ($driverPaths as $prefix => $driverPath) {
-                $chainDriverDef->addMethodCall('addDriver', array(new Reference($mappingService), $prefix));
+                $chainDriverDef->addMethodCall('addDriver', [new Reference($mappingService), $prefix]);
             }
         }
 
@@ -240,7 +240,7 @@ protected function assertValidMappingConfiguration(array $mappingConfig, $object
             throw new \InvalidArgumentException(sprintf('Specified non-existing directory "%s" as Doctrine mapping source.', $mappingConfig['dir']));
         }
 
-        if (!\in_array($mappingConfig['type'], array('xml', 'yml', 'annotation', 'php', 'staticphp'))) {
+        if (!\in_array($mappingConfig['type'], ['xml', 'yml', 'annotation', 'php', 'staticphp'])) {
             throw new \InvalidArgumentException(sprintf('Can only configure "xml", "yml", "annotation", "php" or '.
                 '"staticphp" through the DoctrineBundle. Use your own bundle to configure other metadata drivers. '.
                 'You can register them by adding a new driver to the '.
@@ -326,11 +326,11 @@ protected function loadCacheDriver($cacheName, $objectManagerName, array $cacheD
                 $cacheDef = new Definition($memcacheClass);
                 $memcacheInstance = new Definition($memcacheInstanceClass);
                 $memcacheInstance->setPrivate(true);
-                $memcacheInstance->addMethodCall('connect', array(
+                $memcacheInstance->addMethodCall('connect', [
                     $memcacheHost, $memcachePort,
-                ));
+                ]);
                 $container->setDefinition($this->getObjectManagerElementName(sprintf('%s_memcache_instance', $objectManagerName)), $memcacheInstance);
-                $cacheDef->addMethodCall('setMemcache', array(new Reference($this->getObjectManagerElementName(sprintf('%s_memcache_instance', $objectManagerName)))));
+                $cacheDef->addMethodCall('setMemcache', [new Reference($this->getObjectManagerElementName(sprintf('%s_memcache_instance', $objectManagerName)))]);
                 break;
             case 'memcached':
                 $memcachedClass = !empty($cacheDriver['class']) ? $cacheDriver['class'] : '%'.$this->getObjectManagerElementName('cache.memcached.class').'%';
@@ -340,11 +340,11 @@ protected function loadCacheDriver($cacheName, $objectManagerName, array $cacheD
                 $cacheDef = new Definition($memcachedClass);
                 $memcachedInstance = new Definition($memcachedInstanceClass);
                 $memcachedInstance->setPrivate(true);
-                $memcachedInstance->addMethodCall('addServer', array(
+                $memcachedInstance->addMethodCall('addServer', [
                     $memcachedHost, $memcachedPort,
-                ));
+                ]);
                 $container->setDefinition($this->getObjectManagerElementName(sprintf('%s_memcached_instance', $objectManagerName)), $memcachedInstance);
-                $cacheDef->addMethodCall('setMemcached', array(new Reference($this->getObjectManagerElementName(sprintf('%s_memcached_instance', $objectManagerName)))));
+                $cacheDef->addMethodCall('setMemcached', [new Reference($this->getObjectManagerElementName(sprintf('%s_memcached_instance', $objectManagerName)))]);
                 break;
              case 'redis':
                 $redisClass = !empty($cacheDriver['class']) ? $cacheDriver['class'] : '%'.$this->getObjectManagerElementName('cache.redis.class').'%';
@@ -354,11 +354,11 @@ protected function loadCacheDriver($cacheName, $objectManagerName, array $cacheD
                 $cacheDef = new Definition($redisClass);
                 $redisInstance = new Definition($redisInstanceClass);
                 $redisInstance->setPrivate(true);
-                $redisInstance->addMethodCall('connect', array(
+                $redisInstance->addMethodCall('connect', [
                     $redisHost, $redisPort,
-                ));
+                ]);
                 $container->setDefinition($this->getObjectManagerElementName(sprintf('%s_redis_instance', $objectManagerName)), $redisInstance);
-                $cacheDef->addMethodCall('setRedis', array(new Reference($this->getObjectManagerElementName(sprintf('%s_redis_instance', $objectManagerName)))));
+                $cacheDef->addMethodCall('setRedis', [new Reference($this->getObjectManagerElementName(sprintf('%s_redis_instance', $objectManagerName)))]);
                 break;
             case 'apc':
             case 'apcu':
@@ -387,7 +387,7 @@ protected function loadCacheDriver($cacheName, $objectManagerName, array $cacheD
             $cacheDriver['namespace'] = $namespace;
         }
 
-        $cacheDef->addMethodCall('setNamespace', array($cacheDriver['namespace']));
+        $cacheDef->addMethodCall('setNamespace', [$cacheDriver['namespace']]);
 
         $container->setDefinition($cacheDriverServiceId, $cacheDef);
 
@@ -410,10 +410,10 @@ protected function fixManagersAutoMappings(array $managerConfigs, array $bundles
                         continue 2;
                     }
                 }
-                $managerConfigs[$autoMappedManager]['mappings'][$bundle] = array(
+                $managerConfigs[$autoMappedManager]['mappings'][$bundle] = [
                     'mapping' => true,
                     'is_bundle' => true,
-                );
+                ];
             }
             $managerConfigs[$autoMappedManager]['auto_mapping'] = false;
         }
diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPass.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPass.php
index 219b18f0fd04..f602d28766ae 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPass.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPass.php
@@ -65,13 +65,13 @@ private function addTaggedSubscribers(ContainerBuilder $container)
 
         foreach ($taggedSubscribers as $taggedSubscriber) {
             list($id, $tag) = $taggedSubscriber;
-            $connections = isset($tag['connection']) ? array($tag['connection']) : array_keys($this->connections);
+            $connections = isset($tag['connection']) ? [$tag['connection']] : array_keys($this->connections);
             foreach ($connections as $con) {
                 if (!isset($this->connections[$con])) {
                     throw new RuntimeException(sprintf('The Doctrine connection "%s" referenced in service "%s" does not exist. Available connections names: %s', $con, $id, implode(', ', array_keys($this->connections))));
                 }
 
-                $this->getEventManagerDef($container, $con)->addMethodCall('addEventSubscriber', array(new Reference($id)));
+                $this->getEventManagerDef($container, $con)->addMethodCall('addEventSubscriber', [new Reference($id)]);
             }
         }
     }
@@ -88,7 +88,7 @@ private function addTaggedListeners(ContainerBuilder $container)
                 throw new InvalidArgumentException(sprintf('Doctrine event listener "%s" must specify the "event" attribute.', $id));
             }
 
-            $connections = isset($tag['connection']) ? array($tag['connection']) : array_keys($this->connections);
+            $connections = isset($tag['connection']) ? [$tag['connection']] : array_keys($this->connections);
             foreach ($connections as $con) {
                 if (!isset($this->connections[$con])) {
                     throw new RuntimeException(sprintf('The Doctrine connection "%s" referenced in service "%s" does not exist. Available connections names: %s', $con, $id, implode(', ', array_keys($this->connections))));
@@ -99,7 +99,7 @@ private function addTaggedListeners(ContainerBuilder $container)
                 }
 
                 // we add one call per event per service so we have the correct order
-                $this->getEventManagerDef($container, $con)->addMethodCall('addEventListener', array(array($tag['event']), $lazy ? $id : new Reference($id)));
+                $this->getEventManagerDef($container, $con)->addMethodCall('addEventListener', [[$tag['event']], $lazy ? $id : new Reference($id)]);
             }
         }
     }
@@ -130,12 +130,12 @@ private function getEventManagerDef(ContainerBuilder $container, $name)
      */
     private function findAndSortTags($tagName, ContainerBuilder $container)
     {
-        $sortedTags = array();
+        $sortedTags = [];
 
         foreach ($container->findTaggedServiceIds($tagName, true) as $serviceId => $tags) {
             foreach ($tags as $attributes) {
                 $priority = isset($attributes['priority']) ? $attributes['priority'] : 0;
-                $sortedTags[$priority][] = array($serviceId, $attributes);
+                $sortedTags[$priority][] = [$serviceId, $attributes];
             }
         }
 
diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
index 61e8c1e7b92a..8b95cb02b867 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
@@ -117,7 +117,7 @@ abstract class RegisterMappingsPass implements CompilerPassInterface
      *                                                      register alias
      * @param string[]             $aliasMap                Map of alias to namespace
      */
-    public function __construct($driver, array $namespaces, array $managerParameters, $driverPattern, $enabledParameter = false, $configurationPattern = '', $registerAliasMethodName = '', array $aliasMap = array())
+    public function __construct($driver, array $namespaces, array $managerParameters, $driverPattern, $enabledParameter = false, $configurationPattern = '', $registerAliasMethodName = '', array $aliasMap = [])
     {
         $this->driver = $driver;
         $this->namespaces = $namespaces;
@@ -146,7 +146,7 @@ public function process(ContainerBuilder $container)
         // Definition for a Doctrine\Common\Persistence\Mapping\Driver\MappingDriverChain
         $chainDriverDef = $container->getDefinition($chainDriverDefService);
         foreach ($this->namespaces as $namespace) {
-            $chainDriverDef->addMethodCall('addDriver', array($mappingDriverDef, $namespace));
+            $chainDriverDef->addMethodCall('addDriver', [$mappingDriverDef, $namespace]);
         }
 
         if (!\count($this->aliasMap)) {
@@ -157,7 +157,7 @@ public function process(ContainerBuilder $container)
         // Definition of the Doctrine\...\Configuration class specific to the Doctrine flavour.
         $configurationServiceDefinition = $container->getDefinition($configurationServiceName);
         foreach ($this->aliasMap as $alias => $namespace) {
-            $configurationServiceDefinition->addMethodCall($this->registerAliasMethodName, array($alias, $namespace));
+            $configurationServiceDefinition->addMethodCall($this->registerAliasMethodName, [$alias, $namespace]);
         }
     }
 
diff --git a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php
index 0ea2738a3f06..89df8931c75a 100644
--- a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php
+++ b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php
@@ -92,7 +92,7 @@ public function loadValuesForChoices(array $choices, $value = null)
     {
         // Performance optimization
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // Optimize performance for single-field identifiers. We already
@@ -101,7 +101,7 @@ public function loadValuesForChoices(array $choices, $value = null)
 
         // Attention: This optimization does not check choices for existence
         if ($optimize && !$this->choiceList && $this->idReader->isSingleId()) {
-            $values = array();
+            $values = [];
 
             // Maintain order and indices of the given objects
             foreach ($choices as $i => $object) {
@@ -129,7 +129,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // statements, consequently no test fails when this code is removed.
         // https://github.com/symfony/symfony/pull/8981#issuecomment-24230557
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         // Optimize performance in case we have an object loader and
@@ -138,8 +138,8 @@ public function loadChoicesForValues(array $values, $value = null)
 
         if ($optimize && !$this->choiceList && $this->objectLoader && $this->idReader->isSingleId()) {
             $unorderedObjects = $this->objectLoader->getEntitiesByIds($this->idReader->getIdField(), $values);
-            $objectsById = array();
-            $objects = array();
+            $objectsById = [];
+            $objects = [];
 
             // Maintain order and indices from the given $values
             // An alternative approach to the following loop is to add the
diff --git a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/IdReader.php b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/IdReader.php
index 58753669b4a7..e41074c4ea03 100644
--- a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/IdReader.php
+++ b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/IdReader.php
@@ -43,7 +43,7 @@ public function __construct(ObjectManager $om, ClassMetadata $classMetadata)
         $this->om = $om;
         $this->classMetadata = $classMetadata;
         $this->singleId = 1 === \count($ids);
-        $this->intId = $this->singleId && \in_array($idType, array('integer', 'smallint', 'bigint'));
+        $this->intId = $this->singleId && \in_array($idType, ['integer', 'smallint', 'bigint']);
         $this->idField = current($ids);
 
         // single field association are resolved, since the schema column could be an int
diff --git a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php
index a2f1fa7ae8b7..96f5e2f5f186 100644
--- a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php
+++ b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php
@@ -64,7 +64,7 @@ public function getEntitiesByIds($identifier, array $values)
         // Guess type
         $entity = current($qb->getRootEntities());
         $metadata = $qb->getEntityManager()->getClassMetadata($entity);
-        if (\in_array($metadata->getTypeOfField($identifier), array('integer', 'bigint', 'smallint'))) {
+        if (\in_array($metadata->getTypeOfField($identifier), ['integer', 'bigint', 'smallint'])) {
             $parameterType = Connection::PARAM_INT_ARRAY;
 
             // Filter out non-integer values (e.g. ""). If we don't, some
@@ -72,7 +72,7 @@ public function getEntitiesByIds($identifier, array $values)
             $values = array_values(array_filter($values, function ($v) {
                 return (string) $v === (string) (int) $v || ctype_digit($v);
             }));
-        } elseif (\in_array($metadata->getTypeOfField($identifier), array('uuid', 'guid'))) {
+        } elseif (\in_array($metadata->getTypeOfField($identifier), ['uuid', 'guid'])) {
             $parameterType = Connection::PARAM_STR_ARRAY;
 
             // Like above, but we just filter out empty strings.
@@ -83,7 +83,7 @@ public function getEntitiesByIds($identifier, array $values)
             $parameterType = Connection::PARAM_STR_ARRAY;
         }
         if (!$values) {
-            return array();
+            return [];
         }
 
         return $qb->andWhere($where)
diff --git a/src/Symfony/Bridge/Doctrine/Form/DataTransformer/CollectionToArrayTransformer.php b/src/Symfony/Bridge/Doctrine/Form/DataTransformer/CollectionToArrayTransformer.php
index 4010512ba9c4..3202dae97f5c 100644
--- a/src/Symfony/Bridge/Doctrine/Form/DataTransformer/CollectionToArrayTransformer.php
+++ b/src/Symfony/Bridge/Doctrine/Form/DataTransformer/CollectionToArrayTransformer.php
@@ -31,7 +31,7 @@ class CollectionToArrayTransformer implements DataTransformerInterface
     public function transform($collection)
     {
         if (null === $collection) {
-            return array();
+            return [];
         }
 
         // For cases when the collection getter returns $collection->toArray()
@@ -57,7 +57,7 @@ public function transform($collection)
     public function reverseTransform($array)
     {
         if ('' === $array || null === $array) {
-            $array = array();
+            $array = [];
         } else {
             $array = (array) $array;
         }
diff --git a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmExtension.php b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmExtension.php
index fe86b103cbb3..891754a1da08 100644
--- a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmExtension.php
+++ b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmExtension.php
@@ -26,9 +26,9 @@ public function __construct(ManagerRegistry $registry)
 
     protected function loadTypes()
     {
-        return array(
+        return [
             new EntityType($this->registry),
-        );
+        ];
     }
 
     protected function loadTypeGuesser()
diff --git a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
index 8b49f0662134..689101d2e09a 100644
--- a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
+++ b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
@@ -26,7 +26,7 @@ class DoctrineOrmTypeGuesser implements FormTypeGuesserInterface
 {
     protected $registry;
 
-    private $cache = array();
+    private $cache = [];
 
     public function __construct(ManagerRegistry $registry)
     {
@@ -39,7 +39,7 @@ public function __construct(ManagerRegistry $registry)
     public function guessType($class, $property)
     {
         if (!$ret = $this->getMetadata($class)) {
-            return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::LOW_CONFIDENCE);
+            return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
         }
 
         list($metadata, $name) = $ret;
@@ -48,37 +48,37 @@ public function guessType($class, $property)
             $multiple = $metadata->isCollectionValuedAssociation($property);
             $mapping = $metadata->getAssociationMapping($property);
 
-            return new TypeGuess('Symfony\Bridge\Doctrine\Form\Type\EntityType', array('em' => $name, 'class' => $mapping['targetEntity'], 'multiple' => $multiple), Guess::HIGH_CONFIDENCE);
+            return new TypeGuess('Symfony\Bridge\Doctrine\Form\Type\EntityType', ['em' => $name, 'class' => $mapping['targetEntity'], 'multiple' => $multiple], Guess::HIGH_CONFIDENCE);
         }
 
         switch ($metadata->getTypeOfField($property)) {
             case Type::TARRAY:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::BOOLEAN:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', [], Guess::HIGH_CONFIDENCE);
             case Type::DATETIME:
             case Type::DATETIMETZ:
             case 'vardatetime':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', [], Guess::HIGH_CONFIDENCE);
             case 'dateinterval':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateIntervalType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateIntervalType', [], Guess::HIGH_CONFIDENCE);
             case Type::DATE:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', [], Guess::HIGH_CONFIDENCE);
             case Type::TIME:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', [], Guess::HIGH_CONFIDENCE);
             case Type::DECIMAL:
             case Type::FLOAT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::INTEGER:
             case Type::BIGINT:
             case Type::SMALLINT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::STRING:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::TEXT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextareaType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextareaType', [], Guess::MEDIUM_CONFIDENCE);
             default:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::LOW_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
         }
     }
 
@@ -133,7 +133,7 @@ public function guessMaxLength($class, $property)
                 return new ValueGuess($mapping['length'], Guess::HIGH_CONFIDENCE);
             }
 
-            if (\in_array($ret[0]->getTypeOfField($property), array(Type::DECIMAL, Type::FLOAT))) {
+            if (\in_array($ret[0]->getTypeOfField($property), [Type::DECIMAL, Type::FLOAT])) {
                 return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
             }
         }
@@ -146,7 +146,7 @@ public function guessPattern($class, $property)
     {
         $ret = $this->getMetadata($class);
         if ($ret && isset($ret[0]->fieldMappings[$property]) && !$ret[0]->hasAssociation($property)) {
-            if (\in_array($ret[0]->getTypeOfField($property), array(Type::DECIMAL, Type::FLOAT))) {
+            if (\in_array($ret[0]->getTypeOfField($property), [Type::DECIMAL, Type::FLOAT])) {
                 return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
             }
         }
@@ -164,7 +164,7 @@ protected function getMetadata($class)
         $this->cache[$class] = null;
         foreach ($this->registry->getManagers() as $name => $em) {
             try {
-                return $this->cache[$class] = array($em->getClassMetadata($class), $name);
+                return $this->cache[$class] = [$em->getClassMetadata($class), $name];
             } catch (MappingException $e) {
                 // not an entity or mapped super class
             } catch (LegacyMappingException $e) {
diff --git a/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php b/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
index 0f001d54c496..aafbd1d3af03 100644
--- a/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
+++ b/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
@@ -35,12 +35,12 @@ public static function getSubscribedEvents()
     {
         // Higher priority than core MergeCollectionListener so that this one
         // is called before
-        return array(
-            FormEvents::SUBMIT => array(
-                array('onBind', 10), // deprecated
-                array('onSubmit', 5),
-            ),
-        );
+        return [
+            FormEvents::SUBMIT => [
+                ['onBind', 10], // deprecated
+                ['onSubmit', 5],
+            ],
+        ];
     }
 
     public function onSubmit(FormEvent $event)
diff --git a/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php b/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
index f521dcbd3fb1..95ce28cb652f 100644
--- a/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
+++ b/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
@@ -35,12 +35,12 @@ abstract class DoctrineType extends AbstractType
     /**
      * @var IdReader[]
      */
-    private $idReaders = array();
+    private $idReaders = [];
 
     /**
      * @var DoctrineChoiceLoader[]
      */
-    private $choiceLoaders = array();
+    private $choiceLoaders = [];
 
     /**
      * Creates the label for a choice.
@@ -126,11 +126,11 @@ public function configureOptions(OptionsResolver $resolver)
                 // also if concrete Type can return important QueryBuilder parts to generate
                 // hash key we go for it as well
                 if (!$options['query_builder'] || false !== ($qbParts = $this->getQueryBuilderPartsForCachingHash($options['query_builder']))) {
-                    $hash = CachingFactoryDecorator::generateHash(array(
+                    $hash = CachingFactoryDecorator::generateHash([
                         $options['em'],
                         $options['class'],
                         $qbParts,
-                    ));
+                    ]);
 
                     if (isset($this->choiceLoaders[$hash])) {
                         return $this->choiceLoaders[$hash];
@@ -167,7 +167,7 @@ public function configureOptions(OptionsResolver $resolver)
             // field name. We can only use numeric IDs as names, as we cannot
             // guarantee that a non-numeric ID contains a valid form name
             if ($idReader->isIntId()) {
-                return array(__CLASS__, 'createChoiceName');
+                return [__CLASS__, 'createChoiceName'];
             }
 
             // Otherwise, an incrementing integer is used as name automatically
@@ -183,7 +183,7 @@ public function configureOptions(OptionsResolver $resolver)
 
             // If the entity has a single-column ID, use that ID as value
             if ($idReader->isSingleId()) {
-                return array($idReader, 'getIdValue');
+                return [$idReader, 'getIdValue'];
             }
 
             // Otherwise, an incrementing integer is used as value automatically
@@ -221,10 +221,10 @@ public function configureOptions(OptionsResolver $resolver)
         // Set the "id_reader" option via the normalizer. This option is not
         // supposed to be set by the user.
         $idReaderNormalizer = function (Options $options) {
-            $hash = CachingFactoryDecorator::generateHash(array(
+            $hash = CachingFactoryDecorator::generateHash([
                 $options['em'],
                 $options['class'],
-            ));
+            ]);
 
             // The ID reader is a utility that is needed to read the object IDs
             // when generating the field values. The callback generating the
@@ -240,25 +240,25 @@ public function configureOptions(OptionsResolver $resolver)
             return $this->idReaders[$hash];
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'em' => null,
             'query_builder' => null,
             'choices' => null,
             'choice_loader' => $choiceLoader,
-            'choice_label' => array(__CLASS__, 'createChoiceLabel'),
+            'choice_label' => [__CLASS__, 'createChoiceLabel'],
             'choice_name' => $choiceName,
             'choice_value' => $choiceValue,
             'id_reader' => null, // internal
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $resolver->setRequired(array('class'));
+        $resolver->setRequired(['class']);
 
         $resolver->setNormalizer('em', $emNormalizer);
         $resolver->setNormalizer('query_b
10000
uilder', $queryBuilderNormalizer);
         $resolver->setNormalizer('id_reader', $idReaderNormalizer);
 
-        $resolver->setAllowedTypes('em', array('null', 'string', 'Doctrine\Common\Persistence\ObjectManager'));
+        $resolver->setAllowedTypes('em', ['null', 'string', 'Doctrine\Common\Persistence\ObjectManager']);
     }
 
     /**
@@ -279,6 +279,6 @@ public function getParent()
 
     public function reset()
     {
-        $this->choiceLoaders = array();
+        $this->choiceLoaders = [];
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Form/Type/EntityType.php b/src/Symfony/Bridge/Doctrine/Form/Type/EntityType.php
index fa4176ee18f3..049ef4439298 100644
--- a/src/Symfony/Bridge/Doctrine/Form/Type/EntityType.php
+++ b/src/Symfony/Bridge/Doctrine/Form/Type/EntityType.php
@@ -40,7 +40,7 @@ public function configureOptions(OptionsResolver $resolver)
         };
 
         $resolver->setNormalizer('query_builder', $queryBuilderNormalizer);
-        $resolver->setAllowedTypes('query_builder', array('null', 'callable', 'Doctrine\ORM\QueryBuilder'));
+        $resolver->setAllowedTypes('query_builder', ['null', 'callable', 'Doctrine\ORM\QueryBuilder']);
     }
 
     /**
@@ -78,10 +78,10 @@ public function getBlockPrefix()
      */
     public function getQueryBuilderPartsForCachingHash($queryBuilder)
     {
-        return array(
+        return [
             $queryBuilder->getQuery()->getSQL(),
-            array_map(array($this, 'parameterToArray'), $queryBuilder->getParameters()->toArray()),
-        );
+            array_map([$this, 'parameterToArray'], $queryBuilder->getParameters()->toArray()),
+        ];
     }
 
     /**
@@ -91,6 +91,6 @@ public function getQueryBuilderPartsForCachingHash($queryBuilder)
      */
     private function parameterToArray(Parameter $parameter)
     {
-        return array($parameter->getName(), $parameter->getType(), $parameter->getValue());
+        return [$parameter->getName(), $parameter->getType(), $parameter->getValue()];
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandlerSchema.php b/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandlerSchema.php
index 0696abef602c..9736e356ba71 100644
--- a/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandlerSchema.php
+++ b/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandlerSchema.php
@@ -44,6 +44,6 @@ private function addSessionTable($tableName)
         $table->addColumn('sess_id', 'string');
         $table->addColumn('sess_data', 'text')->setNotNull(true);
         $table->addColumn('sess_time', 'integer')->setNotNull(true)->setUnsigned(true);
-        $table->setPrimaryKey(array('sess_id'));
+        $table->setPrimaryKey(['sess_id']);
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Logger/DbalLogger.php b/src/Symfony/Bridge/Doctrine/Logger/DbalLogger.php
index 0200c2657a0e..63880a6d614a 100644
--- a/src/Symfony/Bridge/Doctrine/Logger/DbalLogger.php
+++ b/src/Symfony/Bridge/Doctrine/Logger/DbalLogger.php
@@ -42,7 +42,7 @@ public function startQuery($sql, array $params = null, array $types = null)
         }
 
         if (null !== $this->logger) {
-            $this->log($sql, null === $params ? array() : $this->normalizeParams($params));
+            $this->log($sql, null === $params ? [] : $this->normalizeParams($params));
         }
     }
 
diff --git a/src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php b/src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php
index f875b5c72756..3bab2d1a3ee0 100644
--- a/src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php
+++ b/src/Symfony/Bridge/Doctrine/PropertyInfo/DoctrineExtractor.php
@@ -37,7 +37,7 @@ public function __construct(ClassMetadataFactory $classMetadataFactory)
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
         try {
             $metadata = $this->classMetadataFactory->getMetadataFor($class);
@@ -63,7 +63,7 @@ public function getProperties($class, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
         try {
             $metadata = $this->classMetadataFactory->getMetadataFor($class);
@@ -85,7 +85,7 @@ public function getTypes($class, $property, array $context = array())
                     $nullable = false;
                 }
 
-                return array(new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, $class));
+                return [new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, $class)];
             }
 
             $collectionKeyType = Type::BUILTIN_TYPE_INT;
@@ -112,18 +112,18 @@ public function getTypes($class, $property, array $context = array())
                 }
             }
 
-            return array(new Type(
+            return [new Type(
                 Type::BUILTIN_TYPE_OBJECT,
                 false,
                 'Doctrine\Common\Collections\Collection',
                 true,
                 new Type($collectionKeyType),
                 new Type(Type::BUILTIN_TYPE_OBJECT, false, $class)
-            ));
+            )];
         }
 
         if ($metadata instanceof ClassMetadataInfo && class_exists('Doctrine\ORM\Mapping\Embedded') && isset($metadata->embeddedClasses[$property])) {
-            return array(new Type(Type::BUILTIN_TYPE_OBJECT, false, $metadata->embeddedClasses[$property]['class']));
+            return [new Type(Type::BUILTIN_TYPE_OBJECT, false, $metadata->embeddedClasses[$property]['class'])];
         }
 
         if ($metadata->hasField($property)) {
@@ -136,30 +136,30 @@ public function getTypes($class, $property, array $context = array())
                 case DBALType::DATETIMETZ:
                 case 'vardatetime':
                 case DBALType::TIME:
-                    return array(new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, 'DateTime'));
+                    return [new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, 'DateTime')];
 
                 case 'date_immutable':
                 case 'datetime_immutable':
                 case 'datetimetz_immutable':
                 case 'time_immutable':
-                    return array(new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, 'DateTimeImmutable'));
+                    return [new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, 'DateTimeImmutable')];
 
                 case 'dateinterval':
-                    return array(new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, 'DateInterval'));
+                    return [new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, 'DateInterval')];
 
                 case DBALType::TARRAY:
-                    return array(new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true));
+                    return [new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true)];
 
                 case DBALType::SIMPLE_ARRAY:
-                    return array(new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING)));
+                    return [new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))];
 
                 case DBALType::JSON_ARRAY:
-                    return array(new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true));
+                    return [new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true)];
 
                 default:
                     $builtinType = $this->getPhpType($typeOfField);
 
-                    return $builtinType ? array(new Type($builtinType, $nullable)) : null;
+                    return $builtinType ? [new Type($builtinType, $nullable)] : null;
             }
         }
     }
diff --git a/src/Symfony/Bridge/Doctrine/Security/RememberMe/DoctrineTokenProvider.php b/src/Symfony/Bridge/Doctrine/Security/RememberMe/DoctrineTokenProvider.php
index 5e41b10e14bb..64515fac7184 100644
--- a/src/Symfony/Bridge/Doctrine/Security/RememberMe/DoctrineTokenProvider.php
+++ b/src/Symfony/Bridge/Doctrine/Security/RememberMe/DoctrineTokenProvider.php
@@ -53,8 +53,8 @@ public function loadTokenBySeries($series)
         // the alias for lastUsed works around case insensitivity in PostgreSQL
         $sql = 'SELECT class, username, value, lastUsed AS last_used'
             .' FROM rememberme_token WHERE series=:series';
-        $paramValues = array('series' => $series);
-        $paramTypes = array('series' => \PDO::PARAM_STR);
+        $paramValues = ['series' => $series];
+        $paramTypes = ['series' => \PDO::PARAM_STR];
         $stmt = $this->conn->executeQuery($sql, $paramValues, $paramTypes);
         $row = $stmt->fetch(\PDO::FETCH_ASSOC);
 
@@ -71,8 +71,8 @@ public function loadTokenBySeries($series)
     public function deleteTokenBySeries($series)
     {
         $sql = 'DELETE FROM rememberme_token WHERE series=:series';
-        $paramValues = array('series' => $series);
-        $paramTypes = array('series' => \PDO::PARAM_STR);
+        $paramValues = ['series' => $series];
+        $paramTypes = ['series' => \PDO::PARAM_STR];
         $this->conn->executeUpdate($sql, $paramValues, $paramTypes);
     }
 
@@ -83,16 +83,16 @@ public function updateToken($series, $tokenValue, \DateTime $lastUsed)
     {
         $sql = 'UPDATE rememberme_token SET value=:value, lastUsed=:lastUsed'
             .' WHERE series=:series';
-        $paramValues = array(
+        $paramValues = [
             'value' => $tokenValue,
             'lastUsed' => $lastUsed,
             'series' => $series,
-        );
-        $paramTypes = array(
+        ];
+        $paramTypes = [
             'value' => \PDO::PARAM_STR,
             'lastUsed' => DoctrineType::DATETIME,
             'series' => \PDO::PARAM_STR,
-        );
+        ];
         $updated = $this->conn->executeUpdate($sql, $paramValues, $paramTypes);
         if ($updated < 1) {
             throw new TokenNotFoundException('No token found.');
@@ -107,20 +107,20 @@ public function createNewToken(PersistentTokenInterface $token)
         $sql = 'INSERT INTO rememberme_token'
             .' (class, username, series, value, lastUsed)'
             .' VALUES (:class, :username, :series, :value, :lastUsed)';
-        $paramValues = array(
+        $paramValues = [
             'class' => $token->getClass(),
             'username' => $token->getUsername(),
             'series' => $token->getSeries(),
             'value' => $token->getTokenValue(),
             'lastUsed' => $token->getLastUsed(),
-        );
-        $paramTypes = array(
+        ];
+        $paramTypes = [
             'class' => \PDO::PARAM_STR,
             'username' => \PDO::PARAM_STR,
             'series' => \PDO::PARAM_STR,
             'value' => \PDO::PARAM_STR,
             'lastUsed' => DoctrineType::DATETIME,
-        );
+        ];
         $this->conn->executeUpdate($sql, $paramValues, $paramTypes);
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php b/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php
index db836eb9cdc8..8923aa21aa29 100644
--- a/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php
+++ b/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php
@@ -48,7 +48,7 @@ public function loadUserByUsername($username)
     {
         $repository = $this->getRepository();
         if (null !== $this->property) {
-            $user = $repository->findOneBy(array($this->property => $username));
+            $user = $repository->findOneBy([$this->property => $username]);
         } else {
             if (!$repository instanceof UserLoaderInterface) {
                 throw new \InvalidArgumentException(sprintf('You must either make the "%s" entity Doctrine Repository ("%s") implement "Symfony\Bridge\Doctrine\Security\User\UserLoaderInterface" or set the "property" option in the corresponding entity provider configuration.', $this->classOrAlias, \get_class($repository)));
diff --git a/src/Symfony/Bridge/Doctrine/Test/DoctrineTestHelper.php b/src/Symfony/Bridge/Doctrine/Test/DoctrineTestHelper.php
index 06dc628475e9..3f6ffeebb6e2 100644
--- a/src/Symfony/Bridge/Doctrine/Test/DoctrineTestHelper.php
+++ b/src/Symfony/Bridge/Doctrine/Test/DoctrineTestHelper.php
@@ -42,10 +42,10 @@ public static function createTestEntityManager(Configuration $config = null)
             $config = self::createTestConfiguration();
         }
 
-        $params = array(
+        $params = [
             'driver' => 'pdo_sqlite',
             'memory' => true,
-        );
+        ];
 
         return EntityManager::create($params, $config);
     }
@@ -56,7 +56,7 @@ public static function createTestEntityManager(Configuration $config = null)
     public static function createTestConfiguration()
     {
         $config = new Configuration();
-        $config->setEntityNamespaces(array('SymfonyTestsDoctrine' => 'Symfony\Bridge\Doctrine\Tests\Fixtures'));
+        $config->setEntityNamespaces(['SymfonyTestsDoctrine' => 'Symfony\Bridge\Doctrine\Tests\Fixtures']);
         $config->setAutoGenerateProxyClasses(true);
         $config->setProxyDir(\sys_get_temp_dir());
         $config->setProxyNamespace('SymfonyTests\Doctrine');
diff --git a/src/Symfony/Bridge/Doctrine/Test/TestRepositoryFactory.php b/src/Symfony/Bridge/Doctrine/Test/TestRepositoryFactory.php
index b7cbafa947ae..e7df3702ebf1 100644
--- a/src/Symfony/Bridge/Doctrine/Test/TestRepositoryFactory.php
+++ b/src/Symfony/Bridge/Doctrine/Test/TestRepositoryFactory.php
@@ -24,7 +24,7 @@ final class TestRepositoryFactory implements RepositoryFactory
     /**
      * @var ObjectRepository[]
      */
-    private $repositoryList = array();
+    private $repositoryList = [];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Bridge/Doctrine/Tests/ContainerAwareEventManagerTest.php b/src/Symfony/Bridge/Doctrine/Tests/ContainerAwareEventManagerTest.php
index f40d1ca710ed..2e97edb1d2e1 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/ContainerAwareEventManagerTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/ContainerAwareEventManagerTest.php
@@ -43,15 +43,15 @@ public function testRemoveEventListener()
         $this->evm->addEventListener('foo', 'bar');
         $this->evm->addEventListener('foo', $listener = new MyListener());
 
-        $listeners = array('foo' => array('_service_bar' => 'bar', spl_object_hash($listener) => $listener));
+        $listeners = ['foo' => ['_service_bar' => 'bar', spl_object_hash($listener) => $listener]];
         $this->assertSame($listeners, $this->evm->getListeners());
         $this->assertSame($listeners['foo'], $this->evm->getListeners('foo'));
 
         $this->evm->removeEventListener('foo', $listener);
-        $this->assertSame(array('_service_bar' => 'bar'), $this->evm->getListeners('foo'));
+        $this->assertSame(['_service_bar' => 'bar'], $this->evm->getListeners('foo'));
 
         $this->evm->removeEventListener('foo', 'bar');
-        $this->assertSame(array(), $this->evm->getListeners('foo'));
+        $this->assertSame([], $this->evm->getListeners('foo'));
     }
 }
 
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php b/src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php
index 3d97b7bcefb6..186610820c08 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php
@@ -22,27 +22,27 @@ class DoctrineDataCollectorTest extends TestCase
 {
     public function testCollectConnections()
     {
-        $c = $this->createCollector(array());
+        $c = $this->createCollector([]);
         $c->collect(new Request(), new Response());
-        $this->assertEquals(array('default' => 'doctrine.dbal.default_connection'), $c->getConnections());
+        $this->assertEquals(['default' => 'doctrine.dbal.default_connection'], $c->getConnections());
     }
 
     public function testCollectManagers()
     {
-        $c = $this->createCollector(array());
+        $c = $this->createCollector([]);
         $c->collect(new Request(), new Response());
-        $this->assertEquals(array('default' => 'doctrine.orm.default_entity_manager'), $c->getManagers());
+        $this->assertEquals(['default' => 'doctrine.orm.default_entity_manager'], $c->getManagers());
     }
 
     public function testCollectQueryCount()
     {
-        $c = $this->createCollector(array());
+        $c = $this->createCollector([]);
         $c->collect(new Request(), new Response());
         $this->assertEquals(0, $c->getQueryCount());
 
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 0),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 0],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
         $this->assertEquals(1, $c->getQueryCount());
@@ -50,21 +50,21 @@ public function testCollectQueryCount()
 
     public function testCollectTime()
     {
-        $c = $this->createCollector(array());
+        $c = $this->createCollector([]);
         $c->collect(new Request(), new Response());
         $this->assertEquals(0, $c->getTime());
 
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
         $this->assertEquals(1, $c->getTime());
 
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
-            array('sql' => 'SELECT * FROM table2', 'params' => array(), 'types' => array(), 'executionMS' => 2),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 1],
+            ['sql' => 'SELECT * FROM table2', 'params' => [], 'types' => [], 'executionMS' => 2],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
         $this->assertEquals(3, $c->getTime());
@@ -75,9 +75,9 @@ public function testCollectTime()
      */
     public function testCollectQueries($param, $types, $expected, $explainable)
     {
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1 WHERE field1 = ?1', 'params' => array($param), 'types' => $types, 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1 WHERE field1 = ?1', 'params' => [$param], 'types' => $types, 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
 
@@ -88,32 +88,32 @@ public function testCollectQueries($param, $types, $expected, $explainable)
 
     public function testCollectQueryWithNoParams()
     {
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
-            array('sql' => 'SELECT * FROM table1', 'params' => null, 'types' => null, 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 1],
+            ['sql' => 'SELECT * FROM table1', 'params' => null, 'types' => null, 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
 
         $collectedQueries = $c->getQueries();
-        $this->assertEquals(array(), $collectedQueries['default'][0]['params']);
+        $this->assertEquals([], $collectedQueries['default'][0]['params']);
         $this->assertTrue($collectedQueries['default'][0]['explainable']);
-        $this->assertEquals(array(), $collectedQueries['default'][1]['params']);
+        $this->assertEquals([], $collectedQueries['default'][1]['params']);
         $this->assertTrue($collectedQueries['default'][1]['explainable']);
     }
 
     public function testReset()
     {
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
 
         $c->reset();
         $c->collect(new Request(), new Response());
 
-        $this->assertEquals(array('default' => array()), $c->getQueries());
+        $this->assertEquals(['default' => []], $c->getQueries());
     }
 
     /**
@@ -121,9 +121,9 @@ public function testReset()
      */
     public function testSerialization($param, $types, $expected, $explainable)
     {
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1 WHERE field1 = ?1', 'params' => array($param), 'types' => $types, 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1 WHERE field1 = ?1', 'params' => [$param], 'types' => $types, 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
         $c = unserialize(serialize($c));
@@ -135,25 +135,25 @@ public function testSerialization($param, $types, $expected, $explainable)
 
     public function paramProvider()
     {
-        $tests = array(
-            array('some value', array(), 'some value', true),
-            array(1, array(), 1, true),
-            array(true, array(), true, true),
-            array(null, array(), null, true),
-            array(new \DateTime('2011-09-11'), array('date'), '2011-09-11', true),
-            array(fopen(__FILE__, 'r'), array(), 'Resource(stream)', false),
-            array(new \stdClass(), array(), 'Object(stdClass)', false),
-            array(
+        $tests = [
+            ['some value', [], 'some value', true],
+            [1, [], 1, true],
+            [true, [], true, true],
+            [null, [], null, true],
+            [new \DateTime('2011-09-11'), ['date'], '2011-09-11', true],
+            [fopen(__FILE__, 'r'), [], 'Resource(stream)', false],
+            [new \stdClass(), [], 'Object(stdClass)', false],
+            [
                 new StringRepresentableClass(),
-                array(),
+                [],
                 'Object(Symfony\Bridge\Doctrine\Tests\DataCollector\StringRepresentableClass): "string representation"',
                 false,
-            ),
-        );
+            ],
+        ];
 
         if (version_compare(Version::VERSION, '2.6', '>=')) {
-            $tests[] = array('this is not a date', array('date'), 'this is not a date', false);
-            $tests[] = array(new \stdClass(), array('date'), 'Object(stdClass)', false);
+            $tests[] = ['this is not a date', ['date'], 'this is not a date', false];
+            $tests[] = [new \stdClass(), ['date'], 'Object(stdClass)', false];
         }
 
         return $tests;
@@ -172,11 +172,11 @@ private function createCollector($queries)
         $registry
             ->expects($this->any())
             ->method('getConnectionNames')
-            ->will($this->returnValue(array('default' => 'doctrine.dbal.default_connection')));
+            ->will($this->returnValue(['default' => 'doctrine.dbal.default_connection']));
         $registry
             ->expects($this->any())
             ->method('getManagerNames')
-            ->will($this->returnValue(array('default' => 'doctrine.orm.default_entity_manager')));
+            ->will($this->returnValue(['default' => 'doctrine.orm.default_entity_manager']));
         $registry->expects($this->any())
             ->method('getConnection')
             ->will($this->returnValue($connection));
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPassTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPassTest.php
index 7e99a7d9356c..8ae9a912b4d0 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPassTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPassTest.php
@@ -44,7 +44,7 @@ public function testExceptionOnAbstractTaggedListener()
 
         $abstractDefinition = new Definition('stdClass');
         $abstractDefinition->setAbstract(true);
-        $abstractDefinition->addTag('doctrine.event_listener', array('event' => 'test'));
+        $abstractDefinition->addTag('doctrine.event_listener', ['event' => 'test']);
 
         $container->setDefinition('a', $abstractDefinition);
 
@@ -58,44 +58,44 @@ public function testProcessEventListenersWithPriorities()
         $container
             ->register('a', 'stdClass')
             ->setPublic(false)
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'bar',
-            ))
-            ->addTag('doctrine.event_listener', array(
+            ])
+            ->addTag('doctrine.event_listener', [
                 'event' => 'foo',
                 'priority' => -5,
-            ))
-            ->addTag('doctrine.event_listener', array(
+            ])
+            ->addTag('doctrine.event_listener', [
                 'event' => 'foo_bar',
                 'priority' => 3,
                 'lazy' => true,
-            ))
+            ])
         ;
         $container
             ->register('b', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'foo',
-            ))
+            ])
         ;
         $container
             ->register('c', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'foo_bar',
                 'priority' => 4,
-            ))
+            ])
         ;
 
         $this->process($container);
         $methodCalls = $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls();
 
         $this->assertEquals(
-            array(
-                array('addEventListener', array(array('foo_bar'), new Reference('c'))),
-                array('addEventListener', array(array('foo_bar'), new Reference('a'))),
-                array('addEventListener', array(array('bar'), new Reference('a'))),
-                array('addEventListener', array(array('foo'), new Reference('b'))),
-                array('addEventListener', array(array('foo'), new Reference('a'))),
-            ),
+            [
+                ['addEventListener', [['foo_bar'], new Reference('c')]],
+                ['addEventListener', [['foo_bar'], new Reference('a')]],
+                ['addEventListener', [['bar'], new Reference('a')]],
+                ['addEventListener', [['foo'], new Reference('b')]],
+                ['addEventListener', [['foo'], new Reference('a')]],
+            ],
             $methodCalls
         );
 
@@ -113,42 +113,42 @@ public function testProcessEventListenersWithMultipleConnections()
 
         $container
             ->register('a', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'onFlush',
-            ))
+            ])
         ;
 
         $container
             ->register('b', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'onFlush',
                 'connection' => 'default',
-            ))
+            ])
         ;
 
         $container
             ->register('c', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'onFlush',
                 'connection' => 'second',
-            ))
+            ])
         ;
 
         $this->process($container);
 
         $this->assertEquals(
-            array(
-                array('addEventListener', array(array('onFlush'), new Reference('a'))),
-                array('addEventListener', array(array('onFlush'), new Reference('b'))),
-            ),
+            [
+                ['addEventListener', [['onFlush'], new Reference('a')]],
+                ['addEventListener', [['onFlush'], new Reference('b')]],
+            ],
             $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls()
         );
 
         $this->assertEquals(
-            array(
-                array('addEventListener', array(array('onFlush'), new Reference('a'))),
-                array('addEventListener', array(array('onFlush'), new Reference('c'))),
-            ),
+            [
+                ['addEventListener', [['onFlush'], new Reference('a')]],
+                ['addEventListener', [['onFlush'], new Reference('c')]],
+            ],
             $container->getDefinition('doctrine.dbal.second_connection.event_manager')->getMethodCalls()
         );
     }
@@ -159,42 +159,42 @@ public function testProcessEventSubscribersWithMultipleConnections()
 
         $container
             ->register('a', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'event' => 'onFlush',
-            ))
+            ])
         ;
 
         $container
             ->register('b', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'event' => 'onFlush',
                 'connection' => 'default',
-            ))
+            ])
         ;
 
         $container
             ->register('c', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'event' => 'onFlush',
                 'connection' => 'second',
-            ))
+            ])
         ;
 
         $this->process($container);
 
         $this->assertEquals(
-            array(
-                array('addEventSubscriber', array(new Reference('a'))),
-                array('addEventSubscriber', array(new Reference('b'))),
-            ),
+            [
+                ['addEventSubscriber', [new Reference('a')]],
+                ['addEventSubscriber', [new Reference('b')]],
+            ],
             $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls()
         );
 
         $this->assertEquals(
-            array(
-                array('addEventSubscriber', array(new Reference('a'))),
-                array('addEventSubscriber', array(new Reference('c'))),
-            ),
+            [
+                ['addEventSubscriber', [new Reference('a')]],
+                ['addEventSubscriber', [new Reference('c')]],
+            ],
             $container->getDefinition('doctrine.dbal.second_connection.event_manager')->getMethodCalls()
         );
     }
@@ -209,39 +209,39 @@ public function testProcessEventSubscribersWithPriorities()
         ;
         $container
             ->register('b', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'priority' => 5,
-            ))
+            ])
         ;
         $container
             ->register('c', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'priority' => 10,
-            ))
+            ])
         ;
         $container
             ->register('d', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'priority' => 10,
-            ))
+            ])
         ;
         $container
             ->register('e', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'priority' => 10,
-            ))
+            ])
         ;
 
         $this->process($container);
 
         $this->assertEquals(
-            array(
-                array('addEventSubscriber', array(new Reference('c'))),
-                array('addEventSubscriber', array(new Reference('d'))),
-                array('addEventSubscriber', array(new Reference('e'))),
-                array('addEventSubscriber', array(new Reference('b'))),
-                array('addEventSubscriber', array(new Reference('a'))),
-            ),
+            [
+                ['addEventSubscriber', [new Reference('c')]],
+                ['addEventSubscriber', [new Reference('d')]],
+                ['addEventSubscriber', [new Reference('e')]],
+                ['addEventSubscriber', [new Reference('b')]],
+                ['addEventSubscriber', [new Reference('a')]],
+            ],
             $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls()
         );
     }
@@ -252,9 +252,9 @@ public function testProcessNoTaggedServices()
 
         $this->process($container);
 
-        $this->assertEquals(array(), $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls());
+        $this->assertEquals([], $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls());
 
-        $this->assertEquals(array(), $container->getDefinition('doctrine.dbal.second_connection.event_manager')->getMethodCalls());
+        $this->assertEquals([], $container->getDefinition('doctrine.dbal.second_connection.event_manager')->getMethodCalls());
     }
 
     private function process(ContainerBuilder $container)
@@ -267,7 +267,7 @@ private function createBuilder($multipleConnections = false)
     {
         $container = new ContainerBuilder();
 
-        $connections = array('default' => 'doctrine.dbal.default_connection');
+        $connections = ['default' => 'doctrine.dbal.default_connection'];
 
         $container->register('doctrine.dbal.default_connection.event_manager', 'stdClass');
         $container->register('doctrine.dbal.default_connection', 'stdClass');
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterMappingsPassTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterMappingsPassTest.php
index 90dd1455921b..0bb2642a7696 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterMappingsPassTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterMappingsPassTest.php
@@ -16,17 +16,17 @@ class RegisterMappingsPassTest extends TestCase
     public function testNoDriverParmeterException()
     {
         $container = $this->createBuilder();
-        $this->process($container, array(
+        $this->process($container, [
             'manager.param.one',
             'manager.param.two',
-        ));
+        ]);
     }
 
     private function process(ContainerBuilder $container, array $managerParamNames)
     {
         $pass = new ConcreteMappingsPass(
             new Definition('\stdClass'),
-            array(),
+            [],
             $managerParamNames,
             'some.%s.metadata_driver'
         );
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
index afb85c35e607..8fcb07465a8f 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
@@ -32,13 +32,13 @@ protected function setUp()
 
         $this->extension = $this
             ->getMockBuilder('Symfony\Bridge\Doctrine\DependencyInjection\AbstractDoctrineExtension')
-            ->setMethods(array(
+            ->setMethods([
                 'getMappingResourceConfigDirectory',
                 'getObjectManagerElementName',
                 'getMappingObjectDefaultName',
                 'getMappingResourceExtension',
                 'load',
-            ))
+            ])
             ->getMock()
         ;
 
@@ -54,19 +54,19 @@ protected function setUp()
      */
     public function testFixManagersAutoMappingsWithTwoAutomappings()
     {
-        $emConfigs = array(
-            'em1' => array(
+        $emConfigs = [
+            'em1' => [
                 'auto_mapping' => true,
-            ),
-            'em2' => array(
+            ],
+            'em2' => [
                 'auto_mapping' => true,
-            ),
-        );
+            ],
+        ];
 
-        $bundles = array(
+        $bundles = [
             'FirstBundle' => 'My\FirstBundle',
             'SecondBundle' => 'My\SecondBundle',
-        );
+        ];
 
         $reflection = new \ReflectionClass(\get_class($this->extension));
         $method = $reflection->getMethod('fixManagersAutoMappings');
@@ -77,69 +77,69 @@ public function testFixManagersAutoMappingsWithTwoAutomappings()
 
     public function getAutomappingData()
     {
-        return array(
-            array(
-                array( // no auto mapping on em1
+        return [
+            [
+                [ // no auto mapping on em1
                     'auto_mapping' => false,
-                ),
-                array( // no auto mapping on em2
+                ],
+                [ // no auto mapping on em2
                     'auto_mapping' => false,
-                ),
-                array(),
-                array(),
-            ),
-            array(
-                array( // no auto mapping on em1
+                ],
+                [],
+                [],
+            ],
+            [
+                [ // no auto mapping on em1
                     'auto_mapping' => false,
-                ),
-                array( // auto mapping enabled on em2
+                ],
+                [ // auto mapping enabled on em2
                     'auto_mapping' => true,
-                ),
-                array(),
-                array(
-                    'mappings' => array(
-                        'FirstBundle' => array(
+                ],
+                [],
+                [
+                    'mappings' => [
+                        'FirstBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                        'SecondBundle' => array(
+                        ],
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-            ),
-            array(
-                array( // no auto mapping on em1, but it defines SecondBundle as own
+                        ],
+                    ],
+                ],
+            ],
+            [
+                [ // no auto mapping on em1, but it defines SecondBundle as own
                     'auto_mapping' => false,
-                    'mappings' => array(
-                        'SecondBundle' => array(
+                    'mappings' => [
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-                array( // auto mapping enabled on em2
+                        ],
+                    ],
+                ],
+                [ // auto mapping enabled on em2
                     'auto_mapping' => true,
-                ),
-                array(
-                    'mappings' => array(
-                        'SecondBundle' => array(
+                ],
+                [
+                    'mappings' => [
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-                array(
-                    'mappings' => array(
-                        'FirstBundle' => array(
+                        ],
+                    ],
+                ],
+                [
+                    'mappings' => [
+                        'FirstBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-            ),
-        );
+                        ],
+                    ],
+                ],
+            ],
+        ];
     }
 
     /**
@@ -147,15 +147,15 @@ public function getAutomappingData()
      */
     public function testFixManagersAutoMappings(array $originalEm1, array $originalEm2, array $expectedEm1, array $expectedEm2)
     {
-        $emConfigs = array(
+        $emConfigs = [
             'em1' => $originalEm1,
             'em2' => $originalEm2,
-        );
+        ];
 
-        $bundles = array(
+        $bundles = [
             'FirstBundle' => 'My\FirstBundle',
             'SecondBundle' => 'My\SecondBundle',
-        );
+        ];
 
         $reflection = new \ReflectionClass(\get_class($this->extension));
         $method = $reflection->getMethod('fixManagersAutoMappings');
@@ -163,27 +163,27 @@ public function testFixManagersAutoMappings(array $originalEm1, array $originalE
 
         $newEmConfigs = $method->invoke($this->extension, $emConfigs, $bundles);
 
-        $this->assertEquals($newEmConfigs['em1'], array_merge(array(
+        $this->assertEquals($newEmConfigs['em1'], array_merge([
             'auto_mapping' => false,
-        ), $expectedEm1));
-        $this->assertEquals($newEmConfigs['em2'], array_merge(array(
+        ], $expectedEm1));
+        $this->assertEquals($newEmConfigs['em2'], array_merge([
             'auto_mapping' => false,
-        ), $expectedEm2));
+        ], $expectedEm2));
     }
 
     public function providerBasicDrivers()
     {
-        return array(
-            array('doctrine.orm.cache.apc.class',       array('type' => 'apc')),
-            array('doctrine.orm.cache.apcu.class',      array('type' => 'apcu')),
-            array('doctrine.orm.cache.array.class',     array('type' => 'array')),
-            array('doctrine.orm.cache.xcache.class',    array('type' => 'xcache')),
-            array('doctrine.orm.cache.wincache.class',  array('type' => 'wincache')),
-            array('doctrine.orm.cache.zenddata.class',  array('type' => 'zenddata')),
-            array('doctrine.orm.cache.redis.class',     array('type' => 'redis'),     array('setRedis')),
-            array('doctrine.orm.cache.memcache.class',  array('type' => 'memcache'),  array('setMemcache')),
-            array('doctrine.orm.cache.memcached.class', array('type' => 'memcached'), array('setMemcached')),
-        );
+        return [
+            ['doctrine.orm.cache.apc.class',       ['type' => 'apc']],
+            ['doctrine.orm.cache.apcu.class',      ['type' => 'apcu']],
+            ['doctrine.orm.cache.array.class',     ['type' => 'array']],
+            ['doctrine.orm.cache.xcache.class',    ['type' => 'xcache']],
+            ['doctrine.orm.cache.wincache.class',  ['type' => 'wincache']],
+            ['doctrine.orm.cache.zenddata.class',  ['type' => 'zenddata']],
+            ['doctrine.orm.cache.redis.class',     ['type' => 'redis'],     ['setRedis']],
+            ['doctrine.orm.cache.memcache.class',  ['type' => 'memcache'],  ['setMemcache']],
+            ['doctrine.orm.cache.memcached.class', ['type' => 'memcached'], ['setMemcached']],
+        ];
     }
 
     /**
@@ -192,14 +192,14 @@ public function providerBasicDrivers()
      *
      * @dataProvider providerBasicDrivers
      */
-    public function testLoadBasicCacheDriver($class, array $config, array $expectedCalls = array())
+    public function testLoadBasicCacheDriver($class, array $config, array $expectedCalls = [])
     {
         $container = $this->createContainer();
         $cacheName = 'metadata_cache';
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
             'metadata_cache_driver' => $config,
-        );
+        ];
 
         $this->invokeLoadCacheDriver($objectManager, $container, $cacheName);
 
@@ -223,13 +223,13 @@ public function testServiceCacheDriver()
         $cacheName = 'metadata_cache';
         $container = $this->createContainer();
         $definition = new Definition('%doctrine.orm.cache.apc.class%');
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
-            'metadata_cache_driver' => array(
+            'metadata_cache_driver' => [
                 'type' => 'service',
                 'id' => 'service_driver',
-            ),
-        );
+            ],
+        ];
 
         $container->setDefinition('service_driver', $definition);
 
@@ -246,12 +246,12 @@ public function testUnrecognizedCacheDriverException()
     {
         $cacheName = 'metadata_cache';
         $container = $this->createContainer();
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
-            'metadata_cache_driver' => array(
+            'metadata_cache_driver' => [
                 'type' => 'unrecognized_type',
-            ),
-        );
+            ],
+        ];
 
         $this->invokeLoadCacheDriver($objectManager, $container, $cacheName);
     }
@@ -262,21 +262,21 @@ protected function invokeLoadCacheDriver(array $objectManager, ContainerBuilder
 
         $method->setAccessible(true);
 
-        $method->invokeArgs($this->extension, array($objectManager, $container, $cacheName));
+        $method->invokeArgs($this->extension, [$objectManager, $container, $cacheName]);
     }
 
     /**
      * @return \Symfony\Component\DependencyInjection\ContainerBuilder
      */
-    protected function createContainer(array $data = array())
+    protected function createContainer(array $data = [])
     {
-        return new ContainerBuilder(new ParameterBag(array_merge(array(
-            'kernel.bundles' => array('FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'),
+        return new ContainerBuilder(new ParameterBag(array_merge([
+            'kernel.bundles' => ['FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'],
             'kernel.cache_dir' => __DIR__,
             'kernel.debug' => false,
             'kernel.environment' => 'test',
             'kernel.name' => 'kernel',
             'kernel.root_dir' => __DIR__,
-        ), $data)));
+        ], $data)));
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Fixtures/SingleIntIdEntity.php b/src/Symfony/Bridge/Doctrine/Tests/Fixtures/SingleIntIdEntity.php
index d98b0ef93a60..ff29145e3353 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Fixtures/SingleIntIdEntity.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Fixtures/SingleIntIdEntity.php
@@ -25,7 +25,7 @@ class SingleIntIdEntity
     public $name;
 
     /** @Column(type="array", nullable=true) */
-    public $phoneNumbers = array();
+    public $phoneNumbers = [];
 
     public function __construct($id, $name)
     {
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
index 2ab9eac24491..325ef31e2b93 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
@@ -81,9 +81,9 @@ protected function setUp()
             ->disableOriginalConstructor()
             ->getMock();
         $this->objectLoader = $this->getMockBuilder('Symfony\Bridge\Doctrine\Form\ChoiceList\EntityLoaderInterface')->getMock();
-        $this->obj1 = (object) array('name' => 'A');
-        $this->obj2 = (object) array('name' => 'B');
-        $this->obj3 = (object) array('name' => 'C');
+        $this->obj1 = (object) ['name' => 'A'];
+        $this->obj2 = (object) ['name' => 'B'];
+        $this->obj3 = (object) ['name' => 'C'];
 
         $this->om->expects($this->any())
             ->method('getRepository')
@@ -104,7 +104,7 @@ public function testLoadChoiceList()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $value = function () {};
         $choiceList = new ArrayChoiceList($choices, $value);
 
@@ -132,7 +132,7 @@ public function testLegacyLoadChoiceList()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $value = function () {};
         $choiceList = new ArrayChoiceList($choices, $value);
 
@@ -159,7 +159,7 @@ public function testLoadChoiceListUsesObjectLoaderIfAvailable()
             $this->objectLoader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $choiceList = new ArrayChoiceList($choices);
 
         $this->repository->expects($this->never())
@@ -184,17 +184,17 @@ public function testLoadValuesForChoices()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
 
         $this->repository->expects($this->once())
             ->method('findAll')
             ->willReturn($choices);
 
-        $this->assertSame(array('1', '2'), $loader->loadValuesForChoices(array($this->obj2, $this->obj3)));
+        $this->assertSame(['1', '2'], $loader->loadValuesForChoices([$this->obj2, $this->obj3]));
 
         // no further loads on subsequent calls
 
-        $this->assertSame(array('1', '2'), $loader->loadValuesForChoices(array($this->obj2, $this->obj3)));
+        $this->assertSame(['1', '2'], $loader->loadValuesForChoices([$this->obj2, $this->obj3]));
     }
 
     public function testLoadValuesForChoicesDoesNotLoadIfEmptyChoices()
@@ -208,7 +208,7 @@ public function testLoadValuesForChoicesDoesNotLoadIfEmptyChoices()
         $this->repository->expects($this->never())
             ->method('findAll');
 
-        $this->assertSame(array(), $loader->loadValuesForChoices(array()));
+        $this->assertSame([], $loader->loadValuesForChoices([]));
     }
 
     public function testLoadValuesForChoicesDoesNotLoadIfSingleIntId()
@@ -231,7 +231,7 @@ public function testLoadValuesForChoicesDoesNotLoadIfSingleIntId()
             ->with($this->obj2)
             ->willReturn('2');
 
-        $this->assertSame(array('2'), $loader->loadValuesForChoices(array($this->obj2)));
+        $this->assertSame(['2'], $loader->loadValuesForChoices([$this->obj2]));
     }
 
     public function testLoadValuesForChoicesLoadsIfSingleIntIdAndValueGiven()
@@ -242,7 +242,7 @@ public function testLoadValuesForChoicesLoadsIfSingleIntIdAndValueGiven()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $value = function (\stdClass $object) { return $object->name; };
 
         $this->idReader->expects($this->any())
@@ -253,8 +253,8 @@ public function testLoadValuesForChoicesLoadsIfSingleIntIdAndValueGiven()
             ->method('findAll')
             ->willReturn($choices);
 
-        $this->assertSame(array('B'), $loader->loadValuesForChoices(
-            array($this->obj2),
+        $this->assertSame(['B'], $loader->loadValuesForChoices(
+            [$this->obj2],
             $value
         ));
     }
@@ -267,7 +267,7 @@ public function testLoadValuesForChoicesDoesNotLoadIfValueIsIdReader()
             $this->idReader
         );
 
-        $value = array($this->idReader, 'getIdValue');
+        $value = [$this->idReader, 'getIdValue'];
 
         $this->idReader->expects($this->any())
             ->method('isSingleId')
@@ -281,8 +281,8 @@ public function testLoadValuesForChoicesDoesNotLoadIfValueIsIdReader()
             ->with($this->obj2)
             ->willReturn('2');
 
-        $this->assertSame(array('2'), $loader->loadValuesForChoices(
-            array($this->obj2),
+        $this->assertSame(['2'], $loader->loadValuesForChoices(
+            [$this->obj2],
             $value
         ));
     }
@@ -295,17 +295,17 @@ public function testLoadChoicesForValues()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
 
         $this->repository->expects($this->once())
             ->method('findAll')
             ->willReturn($choices);
 
-        $this->assertSame(array($this->obj2, $this->obj3), $loader->loadChoicesForValues(array('1', '2')));
+        $this->assertSame([$this->obj2, $this->obj3], $loader->loadChoicesForValues(['1', '2']));
 
         // no further loads on subsequent calls
 
-        $this->assertSame(array($this->obj2, $this->obj3), $loader->loadChoicesForValues(array('1', '2')));
+        $this->assertSame([$this->obj2, $this->obj3], $loader->loadChoicesForValues(['1', '2']));
     }
 
     public function testLoadChoicesForValuesDoesNotLoadIfEmptyValues()
@@ -319,7 +319,7 @@ public function testLoadChoicesForValuesDoesNotLoadIfEmptyValues()
         $this->repository->expects($this->never())
             ->method('findAll');
 
-        $this->assertSame(array(), $loader->loadChoicesForValues(array()));
+        $this->assertSame([], $loader->loadChoicesForValues([]));
     }
 
     public function testLoadChoicesForValuesLoadsOnlyChoicesIfSingleIntId()
@@ -331,7 +331,7 @@ public function testLoadChoicesForValuesLoadsOnlyChoicesIfSingleIntId()
             $this->objectLoader
         );
 
-        $choices = array($this->obj2, $this->obj3);
+        $choices = [$this->obj2, $this->obj3];
 
         $this->idReader->expects($this->any())
             ->method('isSingleId')
@@ -346,19 +346,19 @@ public function testLoadChoicesForValuesLoadsOnlyChoicesIfSingleIntId()
 
         $this->objectLoader->expects($this->once())
             ->method('getEntitiesByIds')
-            ->with('idField', array(4 => '3', 7 => '2'))
+            ->with('idField', [4 => '3', 7 => '2'])
             ->willReturn($choices);
 
         $this->idReader->expects($this->any())
             ->method('getIdValue')
-            ->willReturnMap(array(
-                array($this->obj2, '2'),
-                array($this->obj3, '3'),
-            ));
+            ->willReturnMap([
+                [$this->obj2, '2'],
+                [$this->obj3, '3'],
+            ]);
 
         $this->assertSame(
-            array(4 => $this->obj3, 7 => $this->obj2),
-            $loader->loadChoicesForValues(array(4 => '3', 7 => '2')
+            [4 => $this->obj3, 7 => $this->obj2],
+            $loader->loadChoicesForValues([4 => '3', 7 => '2']
         ));
     }
 
@@ -370,7 +370,7 @@ public function testLoadChoicesForValuesLoadsAllIfSingleIntIdAndValueGiven()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $value = function (\stdClass $object) { return $object->name; };
 
         $this->idReader->expects($this->any())
@@ -381,8 +381,8 @@ public function testLoadChoicesForValuesLoadsAllIfSingleIntIdAndValueGiven()
             ->method('findAll')
             ->willReturn($choices);
 
-        $this->assertSame(array($this->obj2), $loader->loadChoicesForValues(
-            array('B'),
+        $this->assertSame([$this->obj2], $loader->loadChoicesForValues(
+            ['B'],
             $value
         ));
     }
@@ -396,8 +396,8 @@ public function testLoadChoicesForValuesLoadsOnlyChoicesIfValueIsIdReader()
             $this->objectLoader
         );
 
-        $choices = array($this->obj2, $this->obj3);
-        $value = array($this->idReader, 'getIdValue');
+        $choices = [$this->obj2, $this->obj3];
+        $value = [$this->idReader, 'getIdValue'];
 
         $this->idReader->expects($this->any())
             ->method('isSingleId')
@@ -412,16 +412,16 @@ public function testLoadChoicesForValuesLoadsOnlyChoicesIfValueIsIdReader()
 
         $this->objectLoader->expects($this->once())
             ->method('getEntitiesByIds')
-            ->with('idField', array('2'))
+            ->with('idField', ['2'])
             ->willReturn($choices);
 
         $this->idReader->expects($this->any())
             ->method('getIdValue')
-            ->willReturnMap(array(
-                array($this->obj2, '2'),
-                array($this->obj3, '3'),
-            ));
+            ->willReturnMap([
+                [$this->obj2, '2'],
+                [$this->obj3, '3'],
+            ]);
 
-        $this->assertSame(array($this->obj2), $loader->loadChoicesForValues(array('2'), $value));
+        $this->assertSame([$this->obj2], $loader->loadChoicesForValues(['2'], $value));
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/ORMQueryBuilderLoaderTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/ORMQueryBuilderLoaderTest.php
index 211cb12e4df2..3abdb3578aaf 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/ORMQueryBuilderLoaderTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/ORMQueryBuilderLoaderTest.php
@@ -34,17 +34,17 @@ protected function checkIdentifierType($classname, $expectedType)
         $em = DoctrineTestHelper::createTestEntityManager();
 
         $query = $this->getMockBuilder('QueryMock')
-            ->setMethods(array('setParameter', 'getResult', 'getSql', '_doExecute'))
+            ->setMethods(['setParameter', 'getResult', 'getSql', '_doExecute'])
             ->getMock();
 
         $query->expects($this->once())
             ->method('setParameter')
-            ->with('ORMQueryBuilderLoader_getEntitiesByIds_id', array(1, 2), $expectedType)
+            ->with('ORMQueryBuilderLoader_getEntitiesByIds_id', [1, 2], $expectedType)
             ->willReturn($query);
 
         $qb = $this->getMockBuilder('Doctrine\ORM\QueryBuilder')
-            ->setConstructorArgs(array($em))
-            ->setMethods(array('getQuery'))
+            ->setConstructorArgs([$em])
+            ->setMethods(['getQuery'])
             ->getMock();
 
         $qb->expects($this->once())
@@ -55,7 +55,7 @@ protected function checkIdentifierType($classname, $expectedType)
             ->from($classname, 'e');
 
         $loader = new ORMQueryBuilderLoader($qb);
-        $loader->getEntitiesByIds('id', array(1, 2));
+        $loader->getEntitiesByIds('id', [1, 2]);
     }
 
     public function testFilterNonIntegerValues()
@@ -63,17 +63,17 @@ public function testFilterNonIntegerValues()
         $em = DoctrineTestHelper::createTestEntityManager();
 
         $query = $this->getMockBuilder('QueryMock')
-            ->setMethods(array('setParameter', 'getResult', 'getSql', '_doExecute'))
+            ->setMethods(['setParameter', 'getResult', 'getSql', '_doExecute'])
             ->getMock();
 
         $query->expects($this->once())
             ->method('setParameter')
-            ->with('ORMQueryBuilderLoader_getEntitiesByIds_id', array(1, 2, 3, '9223372036854775808'), Connection::PARAM_INT_ARRAY)
+            ->with('ORMQueryBuilderLoader_getEntitiesByIds_id', [1, 2, 3, '9223372036854775808'], Connection::PARAM_INT_ARRAY)
             ->willReturn($query);
 
         $qb = $this->getMockBuilder('Doctrine\ORM\QueryBuilder')
-            ->setConstructorArgs(array($em))
-            ->setMethods(array('getQuery'))
+            ->setConstructorArgs([$em])
+            ->setMethods(['getQuery'])
             ->getMock();
 
         $qb->expects($this->once())
@@ -84,7 +84,7 @@ public function testFilterNonIntegerValues()
             ->from('Symfony\Bridge\Doctrine\Tests\Fixtures\SingleIntIdEntity', 'e');
 
         $loader = new ORMQueryBuilderLoader($qb);
-        $loader->getEntitiesByIds('id', array(1, '', 2, 3, 'foo', '9223372036854775808'));
+        $loader->getEntitiesByIds('id', [1, '', 2, 3, 'foo', '9223372036854775808']);
     }
 
     /**
@@ -95,17 +95,17 @@ public function testFilterEmptyUuids($entityClass)
         $em = DoctrineTestHelper::createTestEntityManager();
 
         $query = $this->getMockBuilder('QueryMock')
-            ->setMethods(array('setParameter', 'getResult', 'getSql', '_doExecute'))
+            ->setMethods(['setParameter', 'getResult', 'getSql', '_doExecute'])
             ->getMock();
 
         $query->expects($this->once())
             ->method('setParameter')
-            ->with('ORMQueryBuilderLoader_getEntitiesByIds_id', array('71c5fd46-3f16-4abb-bad7-90ac1e654a2d', 'b98e8e11-2897-44df-ad24-d2627eb7f499'), Connection::PARAM_STR_ARRAY)
+            ->with('ORMQueryBuilderLoader_getEntitiesByIds_id', ['71c5fd46-3f16-4abb-bad7-90ac1e654a2d', 'b98e8e11-2897-44df-ad24-d2627eb7f499'], Connection::PARAM_STR_ARRAY)
             ->willReturn($query);
 
         $qb = $this->getMockBuilder('Doctrine\ORM\QueryBuilder')
-            ->setConstructorArgs(array($em))
-            ->setMethods(array('getQuery'))
+            ->setConstructorArgs([$em])
+            ->setMethods(['getQuery'])
             ->getMock();
 
         $qb->expects($this->once())
@@ -116,7 +116,7 @@ public function testFilterEmptyUuids($entityClass)
             ->from($entityClass, 'e');
 
         $loader = new ORMQueryBuilderLoader($qb);
-        $loader->getEntitiesByIds('id', array('71c5fd46-3f16-4abb-bad7-90ac1e654a2d', '', 'b98e8e11-2897-44df-ad24-d2627eb7f499'));
+        $loader->getEntitiesByIds('id', ['71c5fd46-3f16-4abb-bad7-90ac1e654a2d', '', 'b98e8e11-2897-44df-ad24-d2627eb7f499']);
     }
 
     public function testEmbeddedIdentifierName()
@@ -130,17 +130,17 @@ public function testEmbeddedIdentifierName()
         $em = DoctrineTestHelper::createTestEntityManager();
 
         $query = $this->getMockBuilder('QueryMock')
-            ->setMethods(array('setParameter', 'getResult', 'getSql', '_doExecute'))
+            ->setMethods(['setParameter', 'getResult', 'getSql', '_doExecute'])
             ->getMock();
 
         $query->expects($this->once())
             ->method('setParameter')
-            ->with('ORMQueryBuilderLoader_getEntitiesByIds_id_value', array(1, 2, 3), Connection::PARAM_INT_ARRAY)
+            ->with('ORMQueryBuilderLoader_getEntitiesByIds_id_value', [1, 2, 3], Connection::PARAM_INT_ARRAY)
             ->willReturn($query);
 
         $qb = $this->getMockBuilder('Doctrine\ORM\QueryBuilder')
-            ->setConstructorArgs(array($em))
-            ->setMethods(array('getQuery'))
+            ->setConstructorArgs([$em])
+            ->setMethods(['getQuery'])
             ->getMock();
         $qb->expects($this->once())
             ->method('getQuery')
@@ -150,14 +150,14 @@ public function testEmbeddedIdentifierName()
             ->from('Symfony\Bridge\Doctrine\Tests\Fixtures\EmbeddedIdentifierEntity', 'e');
 
         $loader = new ORMQueryBuilderLoader($qb);
-        $loader->getEntitiesByIds('id.value', array(1, '', 2, 3, 'foo'));
+        $loader->getEntitiesByIds('id.value', [1, '', 2, 3, 'foo']);
     }
 
     public function provideGuidEntityClasses()
     {
-        return array(
-            array('Symfony\Bridge\Doctrine\Tests\Fixtures\GuidIdEntity'),
-            array('Symfony\Bridge\Doctrine\Tests\Fixtures\UuidIdEntity'),
-        );
+        return [
+            ['Symfony\Bridge\Doctrine\Tests\Fixtures\GuidIdEntity'],
+            ['Symfony\Bridge\Doctrine\Tests\Fixtures\UuidIdEntity'],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/DataTransformer/CollectionToArrayTransformerTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/DataTransformer/CollectionToArrayTransformerTest.php
index fa3ff911ad35..e6e85f4d3f7d 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/DataTransformer/CollectionToArrayTransformerTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/DataTransformer/CollectionToArrayTransformerTest.php
@@ -32,10 +32,10 @@ protected function setUp()
 
     public function testTransform()
     {
-        $array = array(
+        $array = [
             2 => 'foo',
             3 => 'bar',
-        );
+        ];
 
         $this->assertSame($array, $this->transformer->transform(new ArrayCollec
10000
tion($array)));
     }
@@ -49,17 +49,17 @@ public function testTransform()
      */
     public function testTransformArray()
     {
-        $array = array(
+        $array = [
             2 => 'foo',
             3 => 'bar',
-        );
+        ];
 
         $this->assertSame($array, $this->transformer->transform($array));
     }
 
     public function testTransformNull()
     {
-        $this->assertSame(array(), $this->transformer->transform(null));
+        $this->assertSame([], $this->transformer->transform(null));
     }
 
     /**
@@ -72,10 +72,10 @@ public function testTransformExpectsArrayOrCollection()
 
     public function testReverseTransform()
     {
-        $array = array(
+        $array = [
             2 => 'foo',
             3 => 'bar',
-        );
+        ];
 
         $this->assertEquals(new ArrayCollection($array), $this->transformer->reverseTransform($array));
     }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/DoctrineOrmTypeGuesserTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/DoctrineOrmTypeGuesserTest.php
index 0eda4a3ba6f0..c323385ff192 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/DoctrineOrmTypeGuesserTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/DoctrineOrmTypeGuesserTest.php
@@ -29,54 +29,54 @@ public function testRequiredGuesser($classMetadata, $expected)
 
     public function requiredProvider()
     {
-        $return = array();
+        $return = [];
 
         // Simple field, not nullable
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
         $classMetadata->fieldMappings['field'] = true;
         $classMetadata->expects($this->once())->method('isNullable')->with('field')->will($this->returnValue(false));
 
-        $return[] = array($classMetadata, new ValueGuess(true, Guess::HIGH_CONFIDENCE));
+        $return[] = [$classMetadata, new ValueGuess(true, Guess::HIGH_CONFIDENCE)];
 
         // Simple field, nullable
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
         $classMetadata->fieldMappings['field'] = true;
         $classMetadata->expects($this->once())->method('isNullable')->with('field')->will($this->returnValue(true));
 
-        $return[] = array($classMetadata, new ValueGuess(false, Guess::MEDIUM_CONFIDENCE));
+        $return[] = [$classMetadata, new ValueGuess(false, Guess::MEDIUM_CONFIDENCE)];
 
         // One-to-one, nullable (by default)
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
         $classMetadata->expects($this->once())->method('isAssociationWithSingleJoinColumn')->with('field')->will($this->returnValue(true));
 
-        $mapping = array('joinColumns' => array(array()));
+        $mapping = ['joinColumns' => [[]]];
         $classMetadata->expects($this->once())->method('getAssociationMapping')->with('field')->will($this->returnValue($mapping));
 
-        $return[] = array($classMetadata, new ValueGuess(false, Guess::HIGH_CONFIDENCE));
+        $return[] = [$classMetadata, new ValueGuess(false, Guess::HIGH_CONFIDENCE)];
 
         // One-to-one, nullable (explicit)
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
         $classMetadata->expects($this->once())->method('isAssociationWithSingleJoinColumn')->with('field')->will($this->returnValue(true));
 
-        $mapping = array('joinColumns' => array(array('nullable' => true)));
+        $mapping = ['joinColumns' => [['nullable' => true]]];
         $classMetadata->expects($this->once())->method('getAssociationMapping')->with('field')->will($this->returnValue($mapping));
 
-        $return[] = array($classMetadata, new ValueGuess(false, Guess::HIGH_CONFIDENCE));
+        $return[] = [$classMetadata, new ValueGuess(false, Guess::HIGH_CONFIDENCE)];
 
         // One-to-one, not nullable
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
         $classMetadata->expects($this->once())->method('isAssociationWithSingleJoinColumn')->with('field')->will($this->returnValue(true));
 
-        $mapping = array('joinColumns' => array(array('nullable' => false)));
+        $mapping = ['joinColumns' => [['nullable' => false]]];
         $classMetadata->expects($this->once())->method('getAssociationMapping')->with('field')->will($this->returnValue($mapping));
 
-        $return[] = array($classMetadata, new ValueGuess(true, Guess::HIGH_CONFIDENCE));
+        $return[] = [$classMetadata, new ValueGuess(true, Guess::HIGH_CONFIDENCE)];
 
         // One-to-many, no clue
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
         $classMetadata->expects($this->once())->method('isAssociationWithSingleJoinColumn')->with('field')->will($this->returnValue(false));
 
-        $return[] = array($classMetadata, null);
+        $return[] = [$classMetadata, null];
 
         return $return;
     }
@@ -87,7 +87,7 @@ private function getGuesser(ClassMetadata $classMetadata)
         $em->expects($this->once())->method('getClassMetaData')->with('TestEntity')->will($this->returnValue($classMetadata));
 
         $registry = $this->getMockBuilder('Doctrine\Common\Persistence\ManagerRegistry')->getMock();
-        $registry->expects($this->once())->method('getManagers')->will($this->returnValue(array($em)));
+        $registry->expects($this->once())->method('getManagers')->will($this->returnValue([$em]));
 
         return new DoctrineOrmTypeGuesser($registry);
     }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
index dbcbc0f325e4..5bca28571165 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
@@ -30,7 +30,7 @@ class MergeDoctrineCollectionListenerTest extends TestCase
 
     protected function setUp()
     {
-        $this->collection = new ArrayCollection(array('test'));
+        $this->collection = new ArrayCollection(['test']);
         $this->dispatcher = new EventDispatcher();
         $this->factory = $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock();
         $this->form = $this->getBuilder()
@@ -60,7 +60,7 @@ protected function getForm($name = 'name')
 
     public function testOnSubmitDoNothing()
     {
-        $submittedData = array('test');
+        $submittedData = ['test'];
         $event = new FormEvent($this->getForm(), $submittedData);
 
         $this->dispatcher->dispatch(FormEvents::SUBMIT, $event);
@@ -71,7 +71,7 @@ public function testOnSubmitDoNothing()
 
     public function testOnSubmitNullClearCollection()
     {
-        $submittedData = array();
+        $submittedData = [];
         $event = new FormEvent($this->getForm(), $submittedData);
 
         $this->dispatcher->dispatch(FormEvents::SUBMIT, $event);
@@ -88,7 +88,7 @@ public function testLegacyChildClassOnSubmitCallParent()
             ->setData($this->collection)
             ->addEventSubscriber(new TestClassExtendingMergeDoctrineCollectionListener())
             ->getForm();
-        $submittedData = array();
+        $submittedData = [];
         $event = new FormEvent($form, $submittedData);
 
         $this->dispatcher->dispatch(FormEvents::SUBMIT, $event);
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypePerformanceTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypePerformanceTest.php
index f4f7effa61c2..afdeb5f720e2 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypePerformanceTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypePerformanceTest.php
@@ -42,10 +42,10 @@ protected function getExtensions()
             ->method('getManagerForClass')
             ->will($this->returnValue($this->em));
 
-        return array(
+        return [
             new CoreExtension(),
             new DoctrineOrmExtension($manager),
-        );
+        ];
     }
 
     protected function setUp()
@@ -55,9 +55,9 @@ protected function setUp()
         parent::setUp();
 
         $schemaTool = new SchemaTool($this->em);
-        $classes = array(
+        $classes = [
             $this->em->getClassMetadata(self::ENTITY_CLASS),
-        );
+        ];
 
         try {
             $schemaTool->dropSchema($classes);
@@ -90,9 +90,9 @@ public function testCollapsedEntityField()
         $this->setMaxRunningTime(1);
 
         for ($i = 0; $i < 40; ++$i) {
-            $form = $this->factory->create('Symfony\Bridge\Doctrine\Form\Type\EntityType', null, array(
+            $form = $this->factory->create('Symfony\Bridge\Doctrine\Form\Type\EntityType', null, [
                 'class' => self::ENTITY_CLASS,
-            ));
+            ]);
 
             // force loading of the choice list
             $form->createView();
@@ -108,10 +108,10 @@ public function testCollapsedEntityFieldWithChoices()
         $this->setMaxRunningTime(1);
 
         for ($i = 0; $i < 40; ++$i) {
-            $form = $this->factory->create('Symfony\Bridge\Doctrine\Form\Type\EntityType', null, array(
+            $form = $this->factory->create('Symfony\Bridge\Doctrine\Form\Type\EntityType', null, [
                 'class' => self::ENTITY_CLASS,
                 'choices' => $choices,
-            ));
+            ]);
 
             // force loading of the choice list
             $form->createView();
@@ -127,10 +127,10 @@ public function testCollapsedEntityFieldWithPreferredChoices()
         $this->setMaxRunningTime(1);
 
         for ($i = 0; $i < 40; ++$i) {
-            $form = $this->factory->create('Symfony\Bridge\Doctrine\Form\Type\EntityType', null, array(
+            $form = $this->factory->create('Symfony\Bridge\Doctrine\Form\Type\EntityType', null, [
                     'class' => self::ENTITY_CLASS,
                     'preferred_choices' => $choices,
-                ));
+                ]);
 
             // force loading of the choice list
             $form->createView();
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
index d60992fcf119..2869c2b804c4 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
@@ -65,7 +65,7 @@ protected function setUp()
         parent::setUp();
 
         $schemaTool = new SchemaTool($this->em);
-        $classes = array(
+        $classes = [
             $this->em->getClassMetadata(self::ITEM_GROUP_CLASS),
             $this->em->getClassMetadata(self::SINGLE_IDENT_CLASS),
             $this->em->getClassMetadata(self::SINGLE_IDENT_NO_TO_STRING_CLASS),
@@ -74,7 +74,7 @@ protected function setUp()
             $this->em->getClassMetadata(self::SINGLE_STRING_CASTABLE_IDENT_CLASS),
             $this->em->getClassMetadata(self::COMPOSITE_IDENT_CLASS),
             $this->em->getClassMetadata(self::COMPOSITE_STRING_IDENT_CLASS),
-        );
+        ];
 
         try {
             $schemaTool->dropSchema($classes);
@@ -97,9 +97,9 @@ protected function tearDown()
 
     protected function getExtensions()
     {
-        return array_merge(parent::getExtensions(), array(
+        return array_merge(parent::getExtensions(), [
             new DoctrineOrmExtension($this->emRegistry),
-        ));
+        ]);
     }
 
     protected function persist(array $entities)
@@ -126,9 +126,9 @@ public function testClassOptionIsRequired()
      */
     public function testInvalidClassOption()
     {
-        $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'class' => 'foo',
-        ));
+        ]);
     }
 
     public function testSetDataToUninitializedEntityWithNonRequired()
@@ -136,16 +136,16 @@ public function testSetDataToUninitializedEntityWithNonRequired()
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'required' => false,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $this->assertEquals(array(1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')), $field->createView()->vars['choices']);
+        $this->assertEquals([1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')], $field->createView()->vars['choices']);
     }
 
     public function testSetDataToUninitializedEntityWithNonRequiredToString()
@@ -153,16 +153,16 @@ public function testSetDataToUninitializedEntityWithNonRequiredToString()
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $view = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $view = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'required' => false,
-        ))
+        ])
             ->createView();
 
-        $this->assertEquals(array(1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')), $view->vars['choices']);
+        $this->assertEquals([1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')], $view->vars['choices']);
     }
 
     public function testSetDataToUninitializedEntityWithNonRequiredQueryBuilder()
@@ -170,19 +170,19 @@ public function testSetDataToUninitializedEntityWithNonRequiredQueryBuilder()
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
         $qb = $this->em->createQueryBuilder()->select('e')->from(self::SINGLE_IDENT_CLASS, 'e');
 
-        $view = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $view = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'required' => false,
             'choice_label' => 'name',
             'query_builder' => $qb,
-        ))
+        ])
             ->createView();
 
-        $this->assertEquals(array(1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')), $view->vars['choices']);
+        $this->assertEquals([1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')], $view->vars['choices']);
     }
 
     /**
@@ -190,11 +190,11 @@ public function testSetDataToUninitializedEntityWithNonRequiredQueryBuilder()
      */
     public function testConfigureQueryBuilderWithNonQueryBuilderAndNonClosure()
     {
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => new \stdClass(),
-        ));
+        ]);
     }
 
     /**
@@ -202,13 +202,13 @@ public function testConfigureQueryBuilderWithNonQueryBuilderAndNonClosure()
      */
     public function testConfigureQueryBuilderWithClosureReturningNonQueryBuilder()
     {
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => function () {
                 return new \stdClass();
             },
-        ));
+        ]);
 
         $field->submit('2');
     }
@@ -218,26 +218,26 @@ public function testConfigureQueryBuilderWithClosureReturningNullUseDefault()
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => function () {
                 return;
             },
-        ));
+        ]);
 
-        $this->assertEquals(array(1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')), $field->createView()->vars['choices']);
+        $this->assertEquals([1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')], $field->createView()->vars['choices']);
     }
 
     public function testSetDataSingleNull()
     {
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-        ));
+        ]);
         $field->setData(null);
 
         $this->assertNull($field->getData());
@@ -246,30 +246,30 @@ public function testSetDataSingleNull()
 
     public function testSetDataMultipleExpandedNull()
     {
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-        ));
+        ]);
         $field->setData(null);
 
         $this->assertNull($field->getData());
-        $this->assertSame(array(), $field->getViewData());
+        $this->assertSame([], $field->getViewData());
     }
 
     public function testSetDataMultipleNonExpandedNull()
     {
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-        ));
+        ]);
         $field->setData(null);
 
         $this->assertNull($field->getData());
-        $this->assertSame(array(), $field->getViewData());
+        $this->assertSame([], $field->getViewData());
     }
 
     public function testSubmitSingleNonExpandedSingleIdentifier()
@@ -277,15 +277,15 @@ public function testSubmitSingleNonExpandedSingleIdentifier()
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('2');
 
@@ -302,15 +302,15 @@ public function testSubmitSingleNonExpandedSingleAssocIdentifier()
         $entity1 = new SingleAssociationToIntIdEntity($innerEntity1, 'Foo');
         $entity2 = new SingleAssociationToIntIdEntity($innerEntity2, 'Bar');
 
-        $this->persist(array($innerEntity1, $innerEntity2, $entity1, $entity2));
+        $this->persist([$innerEntity1, $innerEntity2, $entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_ASSOC_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('2');
 
@@ -324,15 +324,15 @@ public function testSubmitSingleNonExpandedCompositeIdentifier()
         $entity1 = new CompositeIntIdEntity(10, 20, 'Foo');
         $entity2 = new CompositeIntIdEntity(30, 40, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'em' => 'default',
             'class' => self::COMPOSITE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         // the collection key is used here
         $field->submit('1');
@@ -348,23 +348,23 @@ public function testSubmitMultipleNonExpandedSingleIdentifier()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $field->submit(array('1', '3'));
+        $field->submit(['1', '3']);
 
-        $expected = new ArrayCollection(array($entity1, $entity3));
+        $expected = new ArrayCollection([$entity1, $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
-        $this->assertSame(array('1', '3'), $field->getViewData());
+        $this->assertSame(['1', '3'], $field->getViewData());
     }
 
     public function testSubmitMultipleNonExpandedSingleAssocIdentifier()
@@ -377,23 +377,23 @@ public function testSubmitMultipleNonExpandedSingleAssocIdentifier()
         $entity2 = new SingleAssociationToIntIdEntity($innerEntity2, 'Bar');
         $entity3 = new SingleAssociationToIntIdEntity($innerEntity3, 'Baz');
 
-        $this->persist(array($innerEntity1, $innerEntity2, $innerEntity3, $entity1, $entity2, $entity3));
+        $this->persist([$innerEntity1, $innerEntity2, $innerEntity3, $entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_ASSOC_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $field->submit(array('1', '3'));
+        $field->submit(['1', '3']);
 
-        $expected = new ArrayCollection(array($entity1, $entity3));
+        $expected = new ArrayCollection([$entity1, $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
-        $this->assertSame(array('1', '3'), $field->getViewData());
+        $this->assertSame(['1', '3'], $field->getViewData());
     }
 
     public function testSubmitMultipleNonExpandedSingleIdentifierForExistingData()
@@ -402,29 +402,29 @@ public function testSubmitMultipleNonExpandedSingleIdentifierForExistingData()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $existing = new ArrayCollection(array(0 => $entity2));
+        $existing = new ArrayCollection([0 => $entity2]);
 
         $field->setData($existing);
-        $field->submit(array('1', '3'));
+        $field->submit(['1', '3']);
 
         // entry with index 0 ($entity2) was replaced
-        $expected = new ArrayCollection(array(0 => $entity1, 1 => $entity3));
+        $expected = new ArrayCollection([0 => $entity1, 1 => $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
         // same object still, useful if it is a PersistentCollection
         $this->assertSame($existing, $field->getData());
-        $this->assertSame(array('1', '3'), $field->getViewData());
+        $this->assertSame(['1', '3'], $field->getViewData());
     }
 
     public function testSubmitMultipleNonExpandedCompositeIdentifier()
@@ -433,24 +433,24 @@ public function testSubmitMultipleNonExpandedCompositeIdentifier()
         $entity2 = new CompositeIntIdEntity(30, 40, 'Bar');
         $entity3 = new CompositeIntIdEntity(50, 60, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'em' => 'default',
             'class' => self::COMPOSITE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         // because of the composite key collection keys are used
-        $field->submit(array('0', '2'));
+        $field->submit(['0', '2']);
 
-        $expected = new ArrayCollection(array($entity1, $entity3));
+        $expected = new ArrayCollection([$entity1, $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
-        $this->assertSame(array('0', '2'), $field->getViewData());
+        $this->assertSame(['0', '2'], $field->getViewData());
     }
 
     public function testSubmitMultipleNonExpandedCompositeIdentifierExistingData()
@@ -459,29 +459,29 @@ public function testSubmitMultipleNonExpandedCompositeIdentifierExistingData()
         $entity2 = new CompositeIntIdEntity(30, 40, 'Bar');
         $entity3 = new CompositeIntIdEntity(50, 60, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'em' => 'default',
             'class' => self::COMPOSITE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $existing = new ArrayCollection(array(0 => $entity2));
+        $existing = new ArrayCollection([0 => $entity2]);
 
         $field->setData($existing);
-        $field->submit(array('0', '2'));
+        $field->submit(['0', '2']);
 
         // entry with index 0 ($entity2) was replaced
-        $expected = new ArrayCollection(array(0 => $entity1, 1 => $entity3));
+        $expected = new ArrayCollection([0 => $entity1, 1 => $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
         // same object still, useful if it is a PersistentCollection
         $this->assertSame($existing, $field->getData());
-        $this->assertSame(array('0', '2'), $field->getViewData());
+        $this->assertSame(['0', '2'], $field->getViewData());
     }
 
     public function testSubmitSingleExpanded()
@@ -489,15 +489,15 @@ public function testSubmitSingleExpanded()
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('2');
 
@@ -515,19 +515,19 @@ public function testSubmitMultipleExpanded()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Bar');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $field->submit(array('1', '3'));
+        $field->submit(['1', '3']);
 
-        $expected = new ArrayCollection(array($entity1, $entity3));
+        $expected = new ArrayCollection([$entity1, $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
@@ -544,19 +544,19 @@ public function testSubmitMultipleExpandedWithNegativeIntegerId()
         $entity1 = new SingleIntIdEntity(-1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $field->submit(array('-1'));
+        $field->submit(['-1']);
 
-        $expected = new ArrayCollection(array($entity1));
+        $expected = new ArrayCollection([$entity1]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
@@ -569,15 +569,15 @@ public function testSubmitSingleNonExpandedStringCastableIdentifier()
         $entity1 = new SingleStringCastableIdEntity(1, 'Foo');
         $entity2 = new SingleStringCastableIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_STRING_CASTABLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('2');
 
@@ -591,15 +591,15 @@ public function testSubmitSingleStringCastableIdentifierExpanded()
         $entity1 = new SingleStringCastableIdEntity(1, 'Foo');
         $entity2 = new SingleStringCastableIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'em' => 'default',
             'class' => self::SINGLE_STRING_CASTABLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('2');
 
@@ -617,29 +617,29 @@ public function testSubmitMultipleNonExpandedStringCastableIdentifierForExisting
         $entity2 = new SingleStringCastableIdEntity(2, 'Bar');
         $entity3 = new SingleStringCastableIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_STRING_CASTABLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $existing = new ArrayCollection(array(0 => $entity2));
+        $existing = new ArrayCollection([0 => $entity2]);
 
         $field->setData($existing);
-        $field->submit(array('1', '3'));
+        $field->submit(['1', '3']);
 
         // entry with index 0 ($entity2) was replaced
-        $expected = new ArrayCollection(array(0 => $entity1, 1 => $entity3));
+        $expected = new ArrayCollection([0 => $entity1, 1 => $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
         // same object still, useful if it is a PersistentCollection
         $this->assertSame($existing, $field->getData());
-        $this->assertSame(array('1', '3'), $field->getViewData());
+        $this->assertSame(['1', '3'], $field->getViewData());
     }
 
     public function testSubmitMultipleNonExpandedStringCastableIdentifier()
@@ -648,23 +648,23 @@ public function testSubmitMultipleNonExpandedStringCastableIdentifier()
         $entity2 = new SingleStringCastableIdEntity(2, 'Bar');
         $entity3 = new SingleStringCastableIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_STRING_CASTABLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $field->submit(array('1', '3'));
+        $field->submit(['1', '3']);
 
-        $expected = new ArrayCollection(array($entity1, $entity3));
+        $expected = new ArrayCollection([$entity1, $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
-        $this->assertSame(array('1', '3'), $field->getViewData());
+        $this->assertSame(['1', '3'], $field->getViewData());
     }
 
     public function testSubmitMultipleStringCastableIdentifierExpanded()
@@ -673,19 +673,19 @@ public function testSubmitMultipleStringCastableIdentifierExpanded()
         $entity2 = new SingleStringCastableIdEntity(2, 'Bar');
         $entity3 = new SingleStringCastableIdEntity(3, 'Bar');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'em' => 'default',
             'class' => self::SINGLE_STRING_CASTABLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $field->submit(array('1', '3'));
+        $field->submit(['1', '3']);
 
-        $expected = new ArrayCollection(array($entity1, $entity3));
+        $expected = new ArrayCollection([$entity1, $entity3]);
 
         $this->assertTrue($field->isSynchronized());
         $this->assertEquals($expected, $field->getData());
@@ -703,19 +703,19 @@ public function testOverrideChoices()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             // not all persisted entities should be displayed
-            'choices' => array($entity1, $entity2),
+            'choices' => [$entity1, $entity2],
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('2');
 
-        $this->assertEquals(array(1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')), $field->createView()->vars['choices']);
+        $this->assertEquals([1 => new ChoiceView($entity1, '1', 'Foo'), 2 => new ChoiceView($entity2, '2', 'Bar')], $field->createView()->vars['choices']);
         $this->assertTrue($field->isSynchronized());
         $this->assertSame($entity2, $field->getData());
         $this->assertSame('2', $field->getViewData());
@@ -726,18 +726,18 @@ public function testOverrideChoicesValues()
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
             'choice_value' => 'name',
-        ));
+        ]);
 
         $field->submit('Bar');
 
-        $this->assertEquals(array('Foo' => new ChoiceView($entity1, 'Foo', 'Foo'), 'Bar' => new ChoiceView($entity2, 'Bar', 'Bar')), $field->createView()->vars['choices']);
+        $this->assertEquals(['Foo' => new ChoiceView($entity1, 'Foo', 'Foo'), 'Bar' => new ChoiceView($entity2, 'Bar', 'Bar')], $field->createView()->vars['choices']);
         $this->assertTrue($field->isSynchronized(), 'Field should be synchronized.');
         $this->assertSame($entity2, $field->getData(), 'Entity should be loaded by custom value.');
         $this->assertSame('Bar', $field->getViewData());
@@ -748,9 +748,9 @@ public function testOverrideChoicesValuesWithCallable()
         $entity1 = new GroupableEntity(1, 'Foo', 'BazGroup');
         $entity2 = new GroupableEntity(2, 'Bar', 'BooGroup');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::ITEM_GROUP_CLASS,
             'choice_label' => 'name',
@@ -761,14 +761,14 @@ public function testOverrideChoicesValuesWithCallable()
 
                 return $entity->groupName.'/'.$entity->name;
             },
-        ));
+        ]);
 
         $field->submit('BooGroup/Bar');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'BazGroup/Foo' => new ChoiceView($entity1, 'BazGroup/Foo', 'Foo'),
             'BooGroup/Bar' => new ChoiceView($entity2, 'BooGroup/Bar', 'Bar'),
-            ), $field->createView()->vars['choices']);
+            ], $field->createView()->vars['choices']);
         $this->assertTrue($field->isSynchronized(), 'Field should be synchronized.');
         $this->assertSame($entity2, $field->getData(), 'Entity should be loaded by custom value.');
         $this->assertSame('BooGroup/Bar', $field->getViewData());
@@ -779,13 +779,13 @@ public function testChoicesForValuesOptimization()
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');
 
-        $this->persist(array($entity1, $entity2));
+        $this->persist([$entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         $this->em->clear();
 
@@ -805,29 +805,29 @@ public function testGroupByChoices()
         $item3 = new GroupableEntity(3, 'Baz', 'Group2');
         $item4 = new GroupableEntity(4, 'Boo!', null);
 
-        $this->persist(array($item1, $item2, $item3, $item4));
+        $this->persist([$item1, $item2, $item3, $item4]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::ITEM_GROUP_CLASS,
-            'choices' => array($item1, $item2, $item3, $item4),
+            'choices' => [$item1, $item2, $item3, $item4],
             'choice_label' => 'name',
             'group_by' => 'groupName',
-        ));
+        ]);
 
         $field->submit('2');
 
         $this->assertSame('2', $field->getViewData());
-        $this->assertEquals(array(
-            'Group1' => new ChoiceGroupView('Group1', array(
+        $this->assertEquals([
+            'Group1' => new ChoiceGroupView('Group1', [
                 1 => new ChoiceView($item1, '1', 'Foo'),
                 2 => new ChoiceView($item2, '2', 'Bar'),
-            )),
-            'Group2' => new ChoiceGroupView('Group2', array(
+            ]),
+            'Group2' => new ChoiceGroupView('Group2', [
                 3 => new ChoiceView($item3, '3', 'Baz'),
-            )),
+            ]),
             4 => new ChoiceView($item4, '4', 'Boo!'),
-        ), $field->createView()->vars['choices']);
+        ], $field->createView()->vars['choices']);
     }
 
     public function testPreferredChoices()
@@ -836,17 +836,17 @@ public function testPreferredChoices()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-            'preferred_choices' => array($entity3, $entity2),
+            'preferred_choices' => [$entity3, $entity2],
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $this->assertEquals(array(3 => new ChoiceView($entity3, '3', 'Baz'), 2 => new ChoiceView($entity2, '2', 'Bar')), $field->createView()->vars['preferred_choices']);
-        $this->assertEquals(array(1 => new ChoiceView($entity1, '1', 'Foo')), $field->createView()->vars['choices']);
+        $this->assertEquals([3 => new ChoiceView($entity3, '3', 'Baz'), 2 => new ChoiceView($entity2, '2', 'Bar')], $field->createView()->vars['preferred_choices']);
+        $this->assertEquals([1 => new ChoiceView($entity1, '1', 'Foo')], $field->createView()->vars['choices']);
     }
 
     public function testOverrideChoicesWithPreferredChoices()
@@ -855,18 +855,18 @@ public function testOverrideChoicesWithPreferredChoices()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-            'choices' => array($entity2, $entity3),
-            'preferred_choices' => array($entity3),
+            'choices' => [$entity2, $entity3],
+            'preferred_choices' => [$entity3],
             'choice_label' => 'name',
-        ));
+        ]);
 
-        $this->assertEquals(array(3 => new ChoiceView($entity3, '3', 'Baz')), $field->createView()->vars['preferred_choices']);
-        $this->assertEquals(array(2 => new ChoiceView($entity2, '2', 'Bar')), $field->createView()->vars['choices']);
+        $this->assertEquals([3 => new ChoiceView($entity3, '3', 'Baz')], $field->createView()->vars['preferred_choices']);
+        $this->assertEquals([2 => new ChoiceView($entity2, '2', 'Bar')], $field->createView()->vars['choices']);
     }
 
     public function testDisallowChoicesThatAreNotIncludedChoicesSingleIdentifier()
@@ -875,14 +875,14 @@ public function testDisallowChoicesThatAreNotIncludedChoicesSingleIdentifier()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-            'choices' => array($entity1, $entity2),
+            'choices' => [$entity1, $entity2],
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('3');
 
@@ -898,14 +898,14 @@ public function testDisallowChoicesThatAreNotIncludedChoicesSingleAssocIdentifie
         $entity1 = new SingleAssociationToIntIdEntity($innerEntity1, 'Foo');
         $entity2 = new SingleAssociationToIntIdEntity($innerEntity2, 'Bar');
 
-        $this->persist(array($innerEntity1, $innerEntity2, $entity1, $entity2));
+        $this->persist([$innerEntity1, $innerEntity2, $entity1, $entity2]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_ASSOC_IDENT_CLASS,
-            'choices' => array($entity1, $entity2),
+            'choices' => [$entity1, $entity2],
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('3');
 
@@ -919,14 +919,14 @@ public function testDisallowChoicesThatAreNotIncludedChoicesCompositeIdentifier(
         $entity2 = new CompositeIntIdEntity(30, 40, 'Bar');
         $entity3 = new CompositeIntIdEntity(50, 60, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::COMPOSITE_IDENT_CLASS,
-            'choices' => array($entity1, $entity2),
+            'choices' => [$entity1, $entity2],
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('2');
 
@@ -940,17 +940,17 @@ public function testDisallowChoicesThatAreNotIncludedQueryBuilderSingleIdentifie
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
         $repository = $this->em->getRepository(self::SINGLE_IDENT_CLASS);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => $repository->createQueryBuilder('e')
                 ->where('e.id IN (1, 2)'),
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('3');
 
@@ -968,17 +968,17 @@ public function testDisallowChoicesThatAreNotIncludedQueryBuilderSingleAssocIden
         $entity2 = new SingleAssociationToIntIdEntity($innerEntity2, 'Bar');
         $entity3 = new SingleAssociationToIntIdEntity($innerEntity3, 'Baz');
 
-        $this->persist(array($innerEntity1, $innerEntity2, $innerEntity3, $entity1, $entity2, $entity3));
+        $this->persist([$innerEntity1, $innerEntity2, $innerEntity3, $entity1, $entity2, $entity3]);
 
         $repository = $this->em->getRepository(self::SINGLE_ASSOC_IDENT_CLASS);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_ASSOC_IDENT_CLASS,
             'query_builder' => $repository->createQueryBuilder('e')
                 ->where('e.entity IN (1, 2)'),
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('3');
 
@@ -992,9 +992,9 @@ public function testDisallowChoicesThatAreNotIncludedQueryBuilderAsClosureSingle
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => function (EntityRepository $repository) {
@@ -1002,7 +1002,7 @@ public function testDisallowChoicesThatAreNotIncludedQueryBuilderAsClosureSingle
                     ->where('e.id IN (1, 2)');
             },
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('3');
 
@@ -1016,9 +1016,9 @@ public function testDisallowChoicesThatAreNotIncludedQueryBuilderAsClosureCompos
         $entity2 = new CompositeIntIdEntity(30, 40, 'Bar');
         $entity3 = new CompositeIntIdEntity(50, 60, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::COMPOSITE_IDENT_CLASS,
             'query_builder' => function (EntityRepository $repository) {
@@ -1026,7 +1026,7 @@ public function testDisallowChoicesThatAreNotIncludedQueryBuilderAsClosureCompos
                     ->where('e.id1 IN (10, 50)');
             },
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('2');
 
@@ -1038,15 +1038,15 @@ public function testSubmitSingleStringIdentifier()
     {
         $entity1 = new SingleStringIdEntity('foo', 'Foo');
 
-        $this->persist(array($entity1));
+        $this->persist([$entity1]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'em' => 'default',
             'class' => self::SINGLE_STRING_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         $field->submit('foo');
 
@@ -1059,15 +1059,15 @@ public function testSubmitCompositeStringIdentifier()
     {
         $entity1 = new CompositeStringIdEntity('foo1', 'foo2', 'Foo');
 
-        $this->persist(array($entity1));
+        $this->persist([$entity1]);
 
-        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'em' => 'default',
             'class' => self::COMPOSITE_STRING_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
 
         // the collection key is used here
         $field->submit('0');
@@ -1087,11 +1087,11 @@ public function testGetManagerForClassIfNoEm()
             ->with(self::SINGLE_IDENT_CLASS)
             ->will($this->returnValue($this->em));
 
-        $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'class' => self::SINGLE_IDENT_CLASS,
             'required' => false,
             'choice_label' => 'name',
-        ));
+        ]);
     }
 
     public function testExplicitEm()
@@ -1102,11 +1102,11 @@ public function testExplicitEm()
         $this->emRegistry->expects($this->never())
             ->method('getManagerForClass');
 
-        $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => $this->em,
             'class' => self::SINGLE_IDENT_CLASS,
             'choice_label' => 'name',
-        ));
+        ]);
     }
 
     public function testLoaderCaching()
@@ -1115,7 +1115,7 @@ public function testLoaderCaching()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
         $repo = $this->em->getRepository(self::SINGLE_IDENT_CLASS);
 
@@ -1130,35 +1130,35 @@ public function testLoaderCaching()
 
         $formBuilder = $factory->createNamedBuilder('form', FormTypeTest::TESTED_TYPE);
 
-        $formBuilder->add('property1', static::TESTED_TYPE, array(
+        $formBuilder->add('property1', static::TESTED_TYPE, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => $repo->createQueryBuilder('e')->where('e.id IN (1, 2)'),
-        ));
+        ]);
 
-        $formBuilder->add('property2', static::TESTED_TYPE, array(
+        $formBuilder->add('property2', static::TESTED_TYPE, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => function (EntityRepository $repo) {
                 return $repo->createQueryBuilder('e')->where('e.id IN (1, 2)');
             },
-        ));
+        ]);
 
-        $formBuilder->add('property3', static::TESTED_TYPE, array(
+        $formBuilder->add('property3', static::TESTED_TYPE, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => function (EntityRepository $repo) {
                 return $repo->createQueryBuilder('e')->where('e.id IN (1, 2)');
             },
-        ));
+        ]);
 
         $form = $formBuilder->getForm();
 
-        $form->submit(array(
+        $form->submit([
             'property1' => 1,
             'property2' => 1,
             'property3' => 2,
-        ));
+        ]);
 
         $choiceLoader1 = $form->get('property1')->getConfig()->getOption('choice_loader');
         $choiceLoader2 = $form->get('property2')->getConfig()->getOption('choice_loader');
@@ -1175,7 +1175,7 @@ public function testLoaderCachingWithParameters()
         $entity2 = new SingleIntIdEntity(2, 'Bar');
         $entity3 = new SingleIntIdEntity(3, 'Baz');
 
-        $this->persist(array($entity1, $entity2, $entity3));
+        $this->persist([$entity1, $entity2, $entity3]);
 
         $repo = $this->em->getRepository(self::SINGLE_IDENT_CLASS);
 
@@ -1190,35 +1190,35 @@ public function testLoaderCachingWithParameters()
 
         $formBuilder = $factory->createNamedBuilder('form', FormTypeTest::TESTED_TYPE);
 
-        $formBuilder->add('property1', static::TESTED_TYPE, array(
+        $formBuilder->add('property1', static::TESTED_TYPE, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => $repo->createQueryBuilder('e')->where('e.id = :id')->setParameter('id', 1),
-        ));
+        ]);
 
-        $formBuilder->add('property2', static::TESTED_TYPE, array(
+        $formBuilder->add('property2', static::TESTED_TYPE, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => function (EntityRepository $repo) {
                 return $repo->createQueryBuilder('e')->where('e.id = :id')->setParameter('id', 1);
             },
-        ));
+        ]);
 
-        $formBuilder->add('property3', static::TESTED_TYPE, array(
+        $formBuilder->add('property3', static::TESTED_TYPE, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'query_builder' => function (EntityRepository $repo) {
                 return $repo->createQueryBuilder('e')->where('e.id = :id')->setParameter('id', 1);
             },
-        ));
+        ]);
 
         $form = $formBuilder->getForm();
 
-        $form->submit(array(
+        $form->submit([
             'property1' => 1,
             'property2' => 1,
             'property3' => 2,
-        ));
+        ]);
 
         $choiceLoader1 = $form->get('property1')->getConfig()->getOption('choice_loader');
         $choiceLoader2 = $form->get('property2')->getConfig()->getOption('choice_loader');
@@ -1242,21 +1242,21 @@ protected function createRegistryMock($name, $em)
 
     public function testPassDisabledAsOption()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'disabled' => true,
             'class' => self::SINGLE_IDENT_CLASS,
-        ));
+        ]);
 
         $this->assertTrue($form->isDisabled());
     }
 
     public function testPassIdAndNameToView()
     {
-        $view = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $view = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-        ))
+        ])
             ->createView();
 
         $this->assertEquals('name', $view->vars['id']);
@@ -1266,10 +1266,10 @@ public function testPassIdAndNameToView()
 
     public function testStripLeadingUnderscoresAndDigitsFromId()
     {
-        $view = $this->factory->createNamed('_09name', static::TESTED_TYPE, null, array(
+        $view = $this->factory->createNamed('_09name', static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-        ))
+        ])
             ->createView();
 
         $this->assertEquals('name', $view->vars['id']);
@@ -1280,10 +1280,10 @@ public function testStripLeadingUnderscoresAndDigitsFromId()
     public function testPassIdAndNameToViewWithParent()
     {
         $view = $this->factory->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE)
-            ->add('child', static::TESTED_TYPE, array(
+            ->add('child', static::TESTED_TYPE, [
                 'em' => 'default',
                 'class' => self::SINGLE_IDENT_CLASS,
-            ))
+            ])
             ->getForm()
             ->createView();
 
@@ -1296,10 +1296,10 @@ public function testPassIdAndNameToViewWithGrandParent()
     {
         $builder = $this->factory->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE)
             ->add('child', FormTypeTest::TESTED_TYPE);
-        $builder->get('child')->add('grand_child', static::TESTED_TYPE, array(
+        $builder->get('child')->add('grand_child', static::TESTED_TYPE, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-        ));
+        ]);
         $view = $builder->getForm()->createView();
 
         $this->assertEquals('parent_child_grand_child', $view['child']['grand_child']->vars['id']);
@@ -1309,11 +1309,11 @@ public function testPassIdAndNameToViewWithGrandParent()
 
     public function testPassTranslationDomainToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'translation_domain' => 'domain',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('domain', $view->vars['translation_domain']);
@@ -1322,13 +1322,13 @@ public function testPassTranslationDomainToView()
     public function testInheritTranslationDomainFromParent()
     {
         $view = $this->factory
-            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, array(
+            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, [
                 'translation_domain' => 'domain',
-            ))
-            ->add('child', static::TESTED_TYPE, array(
+            ])
+            ->add('child', static::TESTED_TYPE, [
                 'em' => 'default',
                 'class' => self::SINGLE_IDENT_CLASS,
-            ))
+            ])
             ->getForm()
             ->createView();
 
@@ -1338,14 +1338,14 @@ public function testInheritTranslationDomainFromParent()
     public function testPreferOwnTranslationDomain()
     {
         $view = $this->factory
-            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, array(
+            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, [
                 'translation_domain' => 'parent_domain',
-            ))
-            ->add('child', static::TESTED_TYPE, array(
+            ])
+            ->add('child', static::TESTED_TYPE, [
                 'em' => 'default',
                 'class' => self::SINGLE_IDENT_CLASS,
                 'translation_domain' => 'domain',
-            ))
+            ])
             ->getForm()
             ->createView();
 
@@ -1356,10 +1356,10 @@ public function testDefaultTranslationDomain()
     {
         $view = $this->factory
             ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE)
-            ->add('child', static::TESTED_TYPE, array(
+            ->add('child', static::TESTED_TYPE, [
                 'em' => 'default',
                 'class' => self::SINGLE_IDENT_CLASS,
-            ))
+            ])
             ->getForm()
             ->createView();
 
@@ -1368,11 +1368,11 @@ public function testDefaultTranslationDomain()
 
     public function testPassLabelToView()
     {
-        $view = $this->factory->createNamed('__test___field', static::TESTED_TYPE, null, array(
+        $view = $this->factory->createNamed('__test___field', static::TESTED_TYPE, null, [
             'label' => 'My label',
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('My label', $view->vars['label']);
@@ -1380,10 +1380,10 @@ public function testPassLabelToView()
 
     public function testPassMultipartFalseToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
-        ))
+        ])
             ->createView();
 
         $this->assertFalse($view->vars['multipart']);
@@ -1391,10 +1391,10 @@ public function testPassMultipartFalseToView()
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => s
8000
elf::SINGLE_IDENT_CLASS,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertNull($form->getData());
@@ -1404,11 +1404,11 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitNullExpanded()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'expanded' => true,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertNull($form->getData());
@@ -1418,82 +1418,82 @@ public function testSubmitNullExpanded()
 
     public function testSubmitNullMultiple()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'multiple' => true,
-        ));
+        ]);
         $form->submit(null);
 
         $collection = new ArrayCollection();
 
         $this->assertEquals($collection, $form->getData());
         $this->assertEquals($collection, $form->getNormData());
-        $this->assertSame(array(), $form->getViewData(), 'View data is always an array');
+        $this->assertSame([], $form->getViewData(), 'View data is always an array');
     }
 
     public function testSubmitNullExpandedMultiple()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'expanded' => true,
             'multiple' => true,
-        ));
+        ]);
         $form->submit(null);
 
         $collection = new ArrayCollection();
 
         $this->assertEquals($collection, $form->getData());
         $this->assertEquals($collection, $form->getNormData());
-        $this->assertSame(array(), $form->getViewData(), 'View data is always an array');
+        $this->assertSame([], $form->getViewData(), 'View data is always an array');
     }
 
     public function testSetDataEmptyArraySubmitNullMultiple()
     {
-        $emptyArray = array();
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $emptyArray = [];
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'multiple' => true,
-        ));
+        ]);
         $form->setData($emptyArray);
         $form->submit(null);
         $this->assertInternalType('array', $form->getData());
-        $this->assertEquals(array(), $form->getData());
-        $this->assertEquals(array(), $form->getNormData());
-        $this->assertSame(array(), $form->getViewData(), 'View data is always an array');
+        $this->assertEquals([], $form->getData());
+        $this->assertEquals([], $form->getNormData());
+        $this->assertSame([], $form->getViewData(), 'View data is always an array');
     }
 
     public function testSetDataNonEmptyArraySubmitNullMultiple()
     {
         $entity1 = new SingleIntIdEntity(1, 'Foo');
-        $this->persist(array($entity1));
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->persist([$entity1]);
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'multiple' => true,
-        ));
-        $existing = array(0 => $entity1);
+        ]);
+        $existing = [0 => $entity1];
         $form->setData($existing);
         $form->submit(null);
         $this->assertInternalType('array', $form->getData());
-        $this->assertEquals(array(), $form->getData());
-        $this->assertEquals(array(), $form->getNormData());
-        $this->assertSame(array(), $form->getViewData(), 'View data is always an array');
+        $this->assertEquals([], $form->getData());
+        $this->assertEquals([], $form->getNormData());
+        $this->assertSame([], $form->getViewData(), 'View data is always an array');
     }
 
     public function testSubmitNullUsesDefaultEmptyData($emptyData = 'empty', $expectedData = null)
     {
         $emptyData = '1';
         $entity1 = new SingleIntIdEntity(1, 'Foo');
-        $this->persist(array($entity1));
+        $this->persist([$entity1]);
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
@@ -1503,19 +1503,19 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = 'empty', $expect
 
     public function testSubmitNullMultipleUsesDefaultEmptyData()
     {
-        $emptyData = array('1');
+        $emptyData = ['1'];
         $entity1 = new SingleIntIdEntity(1, 'Foo');
-        $this->persist(array($entity1));
+        $this->persist([$entity1]);
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'em' => 'default',
             'class' => self::SINGLE_IDENT_CLASS,
             'multiple' => true,
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
-        $collection = new ArrayCollection(array($entity1));
+        $collection = new ArrayCollection([$entity1]);
 
         $this->assertSame($emptyData, $form->getViewData());
         $this->assertEquals($collection, $form->getNormData());
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Logger/DbalLoggerTest.php b/src/Symfony/Bridge/Doctrine/Tests/Logger/DbalLoggerTest.php
index 38bbed12945f..10c403f46168 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Logger/DbalLoggerTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Logger/DbalLoggerTest.php
@@ -25,8 +25,8 @@ public function testLog($sql, $params, $logParams)
 
         $dbalLogger = $this
             ->getMockBuilder('Symfony\\Bridge\\Doctrine\\Logger\\DbalLogger')
-            ->setConstructorArgs(array($logger, null))
-            ->setMethods(array('log'))
+            ->setConstructorArgs([$logger, null])
+            ->setMethods(['log'])
             ->getMock()
         ;
 
@@ -41,14 +41,14 @@ public function testLog($sql, $params, $logParams)
 
     public function getLogFixtures()
     {
-        return array(
-            array('SQL', null, array()),
-            array('SQL', array(), array()),
-            array('SQL', array('foo' => 'bar'), array('foo' => 'bar')),
-            array('SQL', array('foo' => "\x7F\xFF"), array('foo' => DbalLogger::BINARY_DATA_VALUE)),
-            array('SQL', array('foo' => "bar\x7F\xFF"), array('foo' => DbalLogger::BINARY_DATA_VALUE)),
-            array('SQL', array('foo' => ''), array('foo' => '')),
-        );
+        return [
+            ['SQL', null, []],
+            ['SQL', [], []],
+            ['SQL', ['foo' => 'bar'], ['foo' => 'bar']],
+            ['SQL', ['foo' => "\x7F\xFF"], ['foo' => DbalLogger::BINARY_DATA_VALUE]],
+            ['SQL', ['foo' => "bar\x7F\xFF"], ['foo' => DbalLogger::BINARY_DATA_VALUE]],
+            ['SQL', ['foo' => ''], ['foo' => '']],
+        ];
     }
 
     public function testLogNonUtf8()
@@ -57,21 +57,21 @@ public function testLogNonUtf8()
 
         $dbalLogger = $this
             ->getMockBuilder('Symfony\\Bridge\\Doctrine\\Logger\\DbalLogger')
-            ->setConstructorArgs(array($logger, null))
-            ->setMethods(array('log'))
+            ->setConstructorArgs([$logger, null])
+            ->setMethods(['log'])
             ->getMock()
         ;
 
         $dbalLogger
             ->expects($this->once())
             ->method('log')
-            ->with('SQL', array('utf8' => 'foo', 'nonutf8' => DbalLogger::BINARY_DATA_VALUE))
+            ->with('SQL', ['utf8' => 'foo', 'nonutf8' => DbalLogger::BINARY_DATA_VALUE])
         ;
 
-        $dbalLogger->startQuery('SQL', array(
+        $dbalLogger->startQuery('SQL', [
             'utf8' => 'foo',
             'nonutf8' => "\x7F\xFF",
-        ));
+        ]);
     }
 
     public function testLogNonUtf8Array()
@@ -80,29 +80,29 @@ public function testLogNonUtf8Array()
 
         $dbalLogger = $this
             ->getMockBuilder('Symfony\\Bridge\\Doctrine\\Logger\\DbalLogger')
-            ->setConstructorArgs(array($logger, null))
-            ->setMethods(array('log'))
+            ->setConstructorArgs([$logger, null])
+            ->setMethods(['log'])
             ->getMock()
         ;
 
         $dbalLogger
             ->expects($this->once())
             ->method('log')
-            ->with('SQL', array(
+            ->with('SQL', [
                     'utf8' => 'foo',
-                    array(
+                    [
                         'nonutf8' => DbalLogger::BINARY_DATA_VALUE,
-                    ),
-                )
+                    ],
+                ]
             )
         ;
 
-        $dbalLogger->startQuery('SQL', array(
+        $dbalLogger->startQuery('SQL', [
             'utf8' => 'foo',
-            array(
+            [
                 'nonutf8' => "\x7F\xFF",
-            ),
-        ));
+            ],
+        ]);
     }
 
     public function testLogLongString()
@@ -111,8 +111,8 @@ public function testLogLongString()
 
         $dbalLogger = $this
             ->getMockBuilder('Symfony\\Bridge\\Doctrine\\Logger\\DbalLogger')
-            ->setConstructorArgs(array($logger, null))
-            ->setMethods(array('log'))
+            ->setConstructorArgs([$logger, null])
+            ->setMethods(['log'])
             ->getMock()
         ;
 
@@ -124,13 +124,13 @@ public function testLogLongString()
         $dbalLogger
             ->expects($this->once())
             ->method('log')
-            ->with('SQL', array('short' => $shortString, 'long' => substr($longString, 0, DbalLogger::MAX_STRING_LENGTH - 6).' [...]'))
+            ->with('SQL', ['short' => $shortString, 'long' => substr($longString, 0, DbalLogger::MAX_STRING_LENGTH - 6).' [...]'])
         ;
 
-        $dbalLogger->startQuery('SQL', array(
+        $dbalLogger->startQuery('SQL', [
             'short' => $shortString,
             'long' => $longString,
-        ));
+        ]);
     }
 
     public function testLogUTF8LongString()
@@ -139,12 +139,12 @@ public function testLogUTF8LongString()
 
         $dbalLogger = $this
             ->getMockBuilder('Symfony\\Bridge\\Doctrine\\Logger\\DbalLogger')
-            ->setConstructorArgs(array($logger, null))
-            ->setMethods(array('log'))
+            ->setConstructorArgs([$logger, null])
+            ->setMethods(['log'])
             ->getMock()
         ;
 
-        $testStringArray = array('é', 'á', 'ű', 'ő', 'ú', 'ö', 'ü', 'ó', 'í');
+        $testStringArray = ['é', 'á', 'ű', 'ő', 'ú', 'ö', 'ü', 'ó', 'í'];
         $testStringCount = \count($testStringArray);
 
         $shortString = '';
@@ -158,12 +158,12 @@ public function testLogUTF8LongString()
         $dbalLogger
             ->expects($this->once())
             ->method('log')
-            ->with('SQL', array('short' => $shortString, 'long' => mb_substr($longString, 0, DbalLogger::MAX_STRING_LENGTH - 6, 'UTF-8').' [...]'))
+            ->with('SQL', ['short' => $shortString, 'long' => mb_substr($longString, 0, DbalLogger::MAX_STRING_LENGTH - 6, 'UTF-8').' [...]'])
         ;
 
-        $dbalLogger->startQuery('SQL', array(
+        $dbalLogger->startQuery('SQL', [
                 'short' => $shortString,
                 'long' => $longString,
-            ));
+            ]);
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/ManagerRegistryTest.php b/src/Symfony/Bridge/Doctrine/Tests/ManagerRegistryTest.php
index 490a48cfe6c6..e5ebeeacf813 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/ManagerRegistryTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/ManagerRegistryTest.php
@@ -30,7 +30,7 @@ public function testResetService()
     {
         $container = new \LazyServiceProjectServiceContainer();
 
-        $registry = new TestManagerRegistry('name', array(), array('defaultManager' => 'foo'), 'defaultConnection', 'defaultManager', 'proxyInterfaceName');
+        $registry = new TestManagerRegistry('name', [], ['defaultManager' => 'foo'], 'defaultConnection', 'defaultManager', 'proxyInterfaceName');
         $registry->setTestContainer($container);
 
         $foo = $container->get('foo');
diff --git a/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php b/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
index dcb52718b117..cad2dfeaac89 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
@@ -30,8 +30,8 @@ class DoctrineExtractorTest extends TestCase
 
     protected function setUp()
     {
-        $config = Setup::createAnnotationMetadataConfiguration(array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'), true);
-        $entityManager = EntityManager::create(array('driver' => 'pdo_sqlite'), $config);
+        $config = Setup::createAnnotationMetadataConfiguration([__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'], true);
+        $entityManager = EntityManager::create(['driver' => 'pdo_sqlite'], $config);
 
         if (!DBALType::hasType('foo')) {
             DBALType::addType('foo', 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineFooType');
@@ -44,7 +44,7 @@ protected function setUp()
     public function testGetProperties()
     {
         $this->assertEquals(
-             array(
+             [
                 'id',
                 'guid',
                 'time',
@@ -62,7 +62,7 @@ public function testGetProperties()
                 'bar',
                 'indexedBar',
                 'indexedFoo',
-            ),
+            ],
             $this->extractor->getProperties('Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineDummy')
         );
     }
@@ -74,10 +74,10 @@ public function testGetPropertiesWithEmbedded()
         }
 
         $this->assertEquals(
-            array(
+            [
                 'id',
                 'embedded',
-            ),
+            ],
             $this->extractor->getProperties('Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineWithEmbedded')
         );
     }
@@ -87,7 +87,7 @@ public function testGetPropertiesWithEmbedded()
      */
     public function testExtract($property, array $type = null)
     {
-        $this->assertEquals($type, $this->extractor->getTypes('Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineDummy', $property, array()));
+        $this->assertEquals($type, $this->extractor->getTypes('Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineDummy', $property, []));
     }
 
     public function testExtractWithEmbedded()
@@ -96,16 +96,16 @@ public function testExtractWithEmbedded()
             $this->markTestSkipped('@Embedded is not available in Doctrine ORM lower than 2.5.');
         }
 
-        $expectedTypes = array(new Type(
+        $expectedTypes = [new Type(
             Type::BUILTIN_TYPE_OBJECT,
             false,
             'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineEmbeddable'
-        ));
+        )];
 
         $actualTypes = $this->extractor->getTypes(
             'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineWithEmbedded',
             'embedded',
-            array()
+            []
         );
 
         $this->assertEquals($expectedTypes, $actualTypes);
@@ -113,47 +113,47 @@ public function testExtractWithEmbedded()
 
     public function typesProvider()
     {
-        return array(
-            array('id', array(new Type(Type::BUILTIN_TYPE_INT))),
-            array('guid', array(new Type(Type::BUILTIN_TYPE_STRING))),
-            array('bigint', array(new Type(Type::BUILTIN_TYPE_STRING))),
-            array('time', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))),
-            array('timeImmutable', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTimeImmutable'))),
-            array('dateInterval', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateInterval'))),
-            array('float', array(new Type(Type::BUILTIN_TYPE_FLOAT))),
-            array('decimal', array(new Type(Type::BUILTIN_TYPE_STRING))),
-            array('bool', array(new Type(Type::BUILTIN_TYPE_BOOL))),
-            array('binary', array(new Type(Type::BUILTIN_TYPE_RESOURCE))),
-            array('json', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true))),
-            array('foo', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation'))),
-            array('bar', array(new Type(
+        return [
+            ['id', [new Type(Type::BUILTIN_TYPE_INT)]],
+            ['guid', [new Type(Type::BUILTIN_TYPE_STRING)]],
+            ['bigint', [new Type(Type::BUILTIN_TYPE_STRING)]],
+            ['time', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')]],
+            ['timeImmutable', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTimeImmutable')]],
+            ['dateInterval', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateInterval')]],
+            ['float', [new Type(Type::BUILTIN_TYPE_FLOAT)]],
+            ['decimal', [new Type(Type::BUILTIN_TYPE_STRING)]],
+            ['bool', [new Type(Type::BUILTIN_TYPE_BOOL)]],
+            ['binary', [new Type(Type::BUILTIN_TYPE_RESOURCE)]],
+            ['json', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true)]],
+            ['foo', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation')]],
+            ['bar', [new Type(
                 Type::BUILTIN_TYPE_OBJECT,
                 false,
                 'Doctrine\Common\Collections\Collection',
                 true,
                 new Type(Type::BUILTIN_TYPE_INT),
                 new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation')
-            ))),
-            array('indexedBar', array(new Type(
+            )]],
+            ['indexedBar', [new Type(
                 Type::BUILTIN_TYPE_OBJECT,
                 false,
                 'Doctrine\Common\Collections\Collection',
                 true,
                 new Type(Type::BUILTIN_TYPE_STRING),
                 new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation')
-            ))),
-            array('indexedFoo', array(new Type(
+            )]],
+            ['indexedFoo', [new Type(
                 Type::BUILTIN_TYPE_OBJECT,
                 false,
                 'Doctrine\Common\Collections\Collection',
                 true,
                 new Type(Type::BUILTIN_TYPE_STRING),
                 new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation')
-            ))),
-            array('simpleArray', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING)))),
-            array('customFoo', null),
-            array('notMapped', null),
-        );
+            )]],
+            ['simpleArray', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))]],
+            ['customFoo', null],
+            ['notMapped', null],
+        ];
     }
 
     public function testGetPropertiesCatchException()
diff --git a/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/Fixtures/DoctrineFooType.php b/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/Fixtures/DoctrineFooType.php
index 8d0a9381143d..1b8cba50f3ec 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/Fixtures/DoctrineFooType.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/Fixtures/DoctrineFooType.php
@@ -38,7 +38,7 @@ public function getName()
      */
     public function getSQLDeclaration(array $fieldDeclaration, AbstractPlatform $platform)
     {
-        return $platform->getClobTypeDeclarationSQL(array());
+        return $platform->getClobTypeDeclarationSQL([]);
     }
 
     /**
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php b/src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php
index 9d0f79948ba6..7188a3abc1a7 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php
@@ -145,7 +145,7 @@ public function testSupportProxy()
 
         $provider = new EntityUserProvider($this->getManager($em), 'Symfony\Bridge\Doctrine\Tests\Fixtures\User', 'name');
 
-        $user2 = $em->getReference('Symfony\Bridge\Doctrine\Tests\Fixtures\User', array('id1' => 1, 'id2' => 1));
+        $user2 = $em->getReference('Symfony\Bridge\Doctrine\Tests\Fixtures\User', ['id1' => 1, 'id2' => 1]);
         $this->assertTrue($provider->supportsClass(\get_class($user2)));
     }
 
@@ -196,7 +196,7 @@ private function getManager($em, $name = null)
     private function getObjectManager($repository)
     {
         $em = $this->getMockBuilder('\Doctrine\Common\Persistence\ObjectManager')
-            ->setMethods(array('getClassMetadata', 'getRepository'))
+            ->setMethods(['getClassMetadata', 'getRepository'])
             ->getMockForAbstractClass();
         $em->expects($this->any())
             ->method('getRepository')
@@ -208,8 +208,8 @@ private function getObjectManager($repository)
     private function createSchema($em)
     {
         $schemaTool = new SchemaTool($em);
-        $schemaTool->createSchema(array(
+        $schemaTool->createSchema([
             $em->getClassMetadata('Symfony\Bridge\Doctrine\Tests\Fixtures\User'),
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Validator/Constraints/UniqueEntityValidatorTest.php b/src/Symfony/Bridge/Doctrine/Tests/Validator/Constraints/UniqueEntityValidatorTest.php
index d8b55eb808fc..60007eb8a3ba 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Validator/Constraints/UniqueEntityValidatorTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Validator/Constraints/UniqueEntityValidatorTest.php
@@ -90,7 +90,7 @@ protected function createRegistryMock(ObjectManager $em = null)
     protected function createRepositoryMock()
     {
         $repository = $this->getMockBuilder('Doctrine\Common\Persistence\ObjectRepository')
-            ->setMethods(array('findByCustom', 'find', 'findAll', 'findOneBy', 'findBy', 'getClassName'))
+            ->setMethods(['findByCustom', 'find', 'findAll', 'findOneBy', 'findBy', 'getClassName'])
             ->getMock()
         ;
 
@@ -118,8 +118,8 @@ protected function createEntityManagerMock($repositoryMock)
             ->getMock()
         ;
         $refl = $this->getMockBuilder('Doctrine\Common\Reflection\StaticReflectionProperty')
-            ->setConstructorArgs(array($reflParser, 'property-name'))
-            ->setMethods(array('getValue'))
+            ->setConstructorArgs([$reflParser, 'property-name'])
+            ->setMethods(['getValue'])
             ->getMock()
         ;
         $refl
@@ -127,7 +127,7 @@ protected function createEntityManagerMock($repositoryMock)
             ->method('getValue')
             ->will($this->returnValue(true))
         ;
-        $classMetadata->reflFields = array('name' => $refl);
+        $classMetadata->reflFields = ['name' => $refl];
         $em->expects($this->any())
             ->method('getClassMetadata')
             ->will($this->returnValue($classMetadata))
@@ -144,7 +144,7 @@ protected function createValidator()
     private function createSchema(ObjectManager $em)
     {
         $schemaTool = new SchemaTool($em);
-        $schemaTool->createSchema(array(
+        $schemaTool->createSchema([
             $em->getClassMetadata('Symfony\Bridge\Doctrine\Tests\Fixtures\SingleIntIdEntity'),
             $em->getClassMetadata('Symfony\Bridge\Doctrine\Tests\Fixtures\SingleIntIdNoToStringEntity'),
             $em->getClassMetadata('Symfony\Bridge\Doctrine\Tests\Fixtures\DoubleNameEntity'),
@@ -156,7 +156,7 @@ private function createSchema(ObjectManager $em)
             $em->getClassMetadata('Symfony\Bridge\Doctrine\Tests\Fixtures\Employee'),
             $em->getClassMetadata('Symfony\Bridge\Doctrine\Tests\Fixtures\CompositeObjectNoToStringIdEntity'),
             $em->getClassMetadata('Symfony\Bridge\Doctrine\Tests\Fixtures\SingleIntIdStringWrapperNameEntity'),
-        ));
+        ]);
     }
 
     /**
@@ -164,11 +164,11 @@ private function createSchema(ObjectManager $em)
      */
     public function testValidateUniqueness()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Foo');
@@ -190,19 +190,19 @@ public function testValidateUniqueness()
             ->atPath('property.path.name')
             ->setParameter('{{ value }}', '"Foo"')
             ->setInvalidValue($entity2)
-            ->setCause(array($entity1))
+            ->setCause([$entity1])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
 
     public function testValidateCustomErrorPath()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
             'errorPath' => 'bar',
-        ));
+        ]);
 
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Foo');
@@ -216,18 +216,18 @@ public function testValidateCustomErrorPath()
             ->atPath('property.path.bar')
             ->setParameter('{{ value }}', '"Foo"')
             ->setInvalidValue($entity2)
-            ->setCause(array($entity1))
+            ->setCause([$entity1])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
 
     public function testValidateUniquenessWithNull()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $entity1 = new SingleIntIdEntity(1, null);
         $entity2 = new SingleIntIdEntity(2, null);
@@ -243,12 +243,12 @@ public function testValidateUniquenessWithNull()
 
     public function testValidateUniquenessWithIgnoreNullDisabled()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name', 'name2'),
+            'fields' => ['name', 'name2'],
             'em' => self::EM_NAME,
             'ignoreNull' => false,
-        ));
+        ]);
 
         $entity1 = new DoubleNameEntity(1, 'Foo', null);
         $entity2 = new DoubleNameEntity(2, 'Foo', null);
@@ -270,7 +270,7 @@ public function testValidateUniquenessWithIgnoreNullDisabled()
             ->atPath('property.path.name')
             ->setParameter('{{ value }}', '"Foo"')
             ->setInvalidValue('Foo')
-            ->setCause(array($entity1))
+            ->setCause([$entity1])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
@@ -280,12 +280,12 @@ public function testValidateUniquenessWithIgnoreNullDisabled()
      */
     public function testAllConfiguredFieldsAreCheckedOfBeingMappedByDoctrineWithIgnoreNullEnabled()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name', 'name2'),
+            'fields' => ['name', 'name2'],
             'em' => self::EM_NAME,
             'ignoreNull' => true,
-        ));
+        ]);
 
         $entity1 = new SingleIntIdEntity(1, null);
 
@@ -294,12 +294,12 @@ public function testAllConfiguredFieldsAreCheckedOfBeingMappedByDoctrineWithIgno
 
     public function testNoValidationIfFirstFieldIsNullAndNullValuesAreIgnored()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name', 'name2'),
+            'fields' => ['name', 'name2'],
             'em' => self::EM_NAME,
             'ignoreNull' => true,
-        ));
+        ]);
 
         $entity1 = new DoubleNullableNameEntity(1, null, 'Foo');
         $entity2 = new DoubleNullableNameEntity(2, null, 'Foo');
@@ -322,12 +322,12 @@ public function testNoValidationIfFirstFieldIsNullAndNullValuesAreIgnored()
 
     public function testValidateUniquenessWithValidCustomErrorPath()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name', 'name2'),
+            'fields' => ['name', 'name2'],
             'em' => self::EM_NAME,
             'errorPath' => 'name2',
-        ));
+        ]);
 
         $entity1 = new DoubleNameEntity(1, 'Foo', 'Bar');
         $entity2 = new DoubleNameEntity(2, 'Foo', 'Bar');
@@ -349,24 +349,24 @@ public function testValidateUniquenessWithValidCustomErrorPath()
             ->atPath('property.path.name2')
             ->setParameter('{{ value }}', '"Bar"')
             ->setInvalidValue('Bar')
-            ->setCause(array($entity1))
+            ->setCause([$entity1])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
 
     public function testValidateUniquenessUsingCustomRepositoryMethod()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
             'repositoryMethod' => 'findByCustom',
-        ));
+        ]);
 
         $repository = $this->createRepositoryMock();
         $repository->expects($this->once())
             ->method('findByCustom')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
         $this->em = $this->createEntityManagerMock($repository);
         $this->registry = $this->createRegistryMock($this->em);
@@ -382,12 +382,12 @@ public function testValidateUniquenessUsingCustomRepositoryMethod()
 
     public function testValidateUniquenessWithUnrewoundArray()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
             'repositoryMethod' => 'findByCustom',
-        ));
+        ]);
 
         $entity = new SingleIntIdEntity(1, 'foo');
 
@@ -396,9 +396,9 @@ public function testValidateUniquenessWithUnrewoundArray()
             ->method('findByCustom')
             ->will(
                 $this->returnCallback(function () use ($entity) {
-                    $returnValue = array(
+                    $returnValue = [
                         $entity,
-                    );
+                    ];
                     next($returnValue);
 
                     return $returnValue;
@@ -420,12 +420,12 @@ public function testValidateUniquenessWithUnrewoundArray()
      */
     public function testValidateResultTypes($entity1, $result)
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
             'repositoryMethod' => 'findByCustom',
-        ));
+        ]);
 
         $repository = $this->crea
8000
teRepositoryMock();
         $repository->expects($this->once())
@@ -446,20 +446,20 @@ public function resultTypesProvider()
     {
         $entity = new SingleIntIdEntity(1, 'foo');
 
-        return array(
-            array($entity, array($entity)),
-            array($entity, new \ArrayIterator(array($entity))),
-            array($entity, new ArrayCollection(array($entity))),
-        );
+        return [
+            [$entity, [$entity]],
+            [$entity, new \ArrayIterator([$entity])],
+            [$entity, new ArrayCollection([$entity])],
+        ];
     }
 
     public function testAssociatedEntity()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('single'),
+            'fields' => ['single'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $entity1 = new SingleIntIdEntity(1, 'foo');
         $associated = new AssociationEntity();
@@ -485,17 +485,17 @@ public function testAssociatedEntity()
             ->setParameter('{{ value }}', 'foo')
             ->setInvalidValue($entity1)
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
-            ->setCause(array($associated, $associated2))
+            ->setCause([$associated, $associated2])
             ->assertRaised();
     }
 
     public function testValidateUniquenessNotToStringEntityWithAssociatedEntity()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('single'),
+            'fields' => ['single'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $entity1 = new SingleIntIdNoToStringEntity(1, 'foo');
         $associated = new AssociationEntity2();
@@ -522,19 +522,19 @@ public function testValidateUniquenessNotToStringEntityWithAssociatedEntity()
             ->atPath('property.path.single')
             ->setParameter('{{ value }}', $expectedValue)
             ->setInvalidValue($entity1)
-            ->setCause(array($associated, $associated2))
+            ->setCause([$associated, $associated2])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
 
     public function testAssociatedEntityWithNull()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('single'),
+            'fields' => ['single'],
             'em' => self::EM_NAME,
             'ignoreNull' => false,
-        ));
+        ]);
 
         $associated = new AssociationEntity();
         $associated->single = null;
@@ -552,19 +552,19 @@ public function testValidateUniquenessWithArrayValue()
         $repository = $this->createRepositoryMock();
         $this->repositoryFactory->setRepository($this->em, 'Symfony\Bridge\Doctrine\Tests\Fixtures\SingleIntIdEntity', $repository);
 
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('phoneNumbers'),
+            'fields' => ['phoneNumbers'],
             'em' => self::EM_NAME,
             'repositoryMethod' => 'findByCustom',
-        ));
+        ]);
 
         $entity1 = new SingleIntIdEntity(1, 'foo');
         $entity1->phoneNumbers[] = 123;
 
         $repository->expects($this->once())
             ->method('findByCustom')
-            ->will($this->returnValue(array($entity1)))
+            ->will($this->returnValue([$entity1]))
         ;
 
         $this->em->persist($entity1);
@@ -580,8 +580,8 @@ public function testValidateUniquenessWithArrayValue()
         $this->buildViolation('myMessage')
             ->atPath('property.path.phoneNumbers')
             ->setParameter('{{ value }}', 'array')
-            ->setInvalidValue(array(123))
-            ->setCause(array($entity1))
+            ->setInvalidValue([123])
+            ->setCause([$entity1])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
@@ -592,11 +592,11 @@ public function testValidateUniquenessWithArrayValue()
      */
     public function testDedicatedEntityManagerNullObject()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $this->em = null;
         $this->registry = $this->createRegistryMock($this->em);
@@ -614,11 +614,11 @@ public function testDedicatedEntityManagerNullObject()
      */
     public function testEntityManagerNullObject()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             // no "em" option set
-        ));
+        ]);
 
         $this->em = null;
         $this->registry = $this->createRegistryMock($this->em);
@@ -643,11 +643,11 @@ public function testValidateUniquenessOnNullResult()
         $this->validator = $this->createValidator();
         $this->validator->initialize($this->context);
 
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $entity = new SingleIntIdEntity(1, null);
 
@@ -660,12 +660,12 @@ public function testValidateUniquenessOnNullResult()
 
     public function testValidateInheritanceUniqueness()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
             'entityClass' => 'Symfony\Bridge\Doctrine\Tests\Fixtures\Person',
-        ));
+        ]);
 
         $entity1 = new Person(1, 'Foo');
         $entity2 = new Employee(2, 'Foo');
@@ -687,8 +687,8 @@ public function testValidateInheritanceUniqueness()
             ->atPath('property.path.name')
             ->setInvalidValue('Foo')
             ->setCode('23bd9dbf-6b9b-41cd-a99e-4844bcf3077f')
-            ->setCause(array($entity1))
-            ->setParameters(array('{{ value }}' => '"Foo"'))
+            ->setCause([$entity1])
+            ->setParameters(['{{ value }}' => '"Foo"'])
             ->assertRaised();
     }
 
@@ -698,12 +698,12 @@ public function testValidateInheritanceUniqueness()
      */
     public function testInvalidateRepositoryForInheritance()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
             'entityClass' => 'Symfony\Bridge\Doctrine\Tests\Fixtures\SingleStringIdEntity',
-        ));
+        ]);
 
         $entity = new Person(1, 'Foo');
         $this->validator->validate($entity, $constraint);
@@ -711,11 +711,11 @@ public function testInvalidateRepositoryForInheritance()
 
     public function testValidateUniquenessWithCompositeObjectNoToStringIdEntity()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('objectOne', 'objectTwo'),
+            'fields' => ['objectOne', 'objectTwo'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $objectOne = new SingleIntIdNoToStringEntity(1, 'foo');
         $objectTwo = new SingleIntIdNoToStringEntity(2, 'bar');
@@ -739,18 +739,18 @@ public function testValidateUniquenessWithCompositeObjectNoToStringIdEntity()
             ->atPath('property.path.objectOne')
             ->setParameter('{{ value }}', $expectedValue)
             ->setInvalidValue($objectOne)
-            ->setCause(array($entity))
+            ->setCause([$entity])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
 
     public function testValidateUniquenessWithCustomDoctrineTypeValue()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $existingEntity = new SingleIntIdStringWrapperNameEntity(1, new StringWrapper('foo'));
 
@@ -767,7 +767,7 @@ public function testValidateUniquenessWithCustomDoctrineTypeValue()
             ->atPath('property.path.name')
             ->setParameter('{{ value }}', $expectedValue)
             ->setInvalidValue($existingEntity->name)
-            ->setCause(array($existingEntity))
+            ->setCause([$existingEntity])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
@@ -777,11 +777,11 @@ public function testValidateUniquenessWithCustomDoctrineTypeValue()
      */
     public function testValidateUniquenessCause()
     {
-        $constraint = new UniqueEntity(array(
+        $constraint = new UniqueEntity([
             'message' => 'myMessage',
-            'fields' => array('name'),
+            'fields' => ['name'],
             'em' => self::EM_NAME,
-        ));
+        ]);
 
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Foo');
@@ -803,7 +803,7 @@ public function testValidateUniquenessCause()
             ->atPath('property.path.name')
             ->setParameter('{{ value }}', '"Foo"')
             ->setInvalidValue($entity2)
-            ->setCause(array($entity1))
+            ->setCause([$entity1])
             ->setCode(UniqueEntity::NOT_UNIQUE_ERROR)
             ->assertRaised();
     }
diff --git a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php
index c9b13dcf5996..2c319709ebc9 100644
--- a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php
+++ b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php
@@ -30,17 +30,17 @@ class UniqueEntity extends Constraint
     public $em = null;
     public $entityClass = null;
     public $repositoryMethod = 'findBy';
-    public $fields = array();
+    public $fields = [];
     public $errorPath = null;
     public $ignoreNull = true;
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_UNIQUE_ERROR => 'NOT_UNIQUE_ERROR',
-    );
+    ];
 
     public function getRequiredOptions()
     {
-        return array('fields');
+        return ['fields'];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php
index 161a187ff98a..47cb2bd73031 100644
--- a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php
+++ b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php
@@ -81,7 +81,7 @@ public function validate($entity, Constraint $constraint)
         $class = $em->getClassMetadata(\get_class($entity));
         /* @var $class \Doctrine\Common\Persistence\Mapping\ClassMetadata */
 
-        $criteria = array();
+        $criteria = [];
         $hasNullValue = false;
 
         foreach ($fields as $fieldName) {
@@ -149,15 +149,15 @@ public function validate($entity, Constraint $constraint)
         if ($result instanceof \Iterator) {
             $result->rewind();
             if ($result instanceof \Countable && 1 < \count($result)) {
-                $result = array($result->current(), $result->current());
+                $result = [$result->current(), $result->current()];
             } else {
                 $result = $result->current();
-                $result = null === $result ? array() : array($result);
+                $result = null === $result ? [] : [$result];
             }
         } elseif (\is_array($result)) {
             reset($result);
         } else {
-            $result = null === $result ? array() : array($result);
+            $result = null === $result ? [] : [$result];
         }
 
         /* If no entity matched the query criteria or a single entity matched,
@@ -197,7 +197,7 @@ private function formatWithIdentifiers(ObjectManager $em, ClassMetadata $class,
             } else {
                 // this case might happen if the non unique column has a custom doctrine type and its value is an object
                 // in which case we cannot get any identifiers for it
-                $identifiers = array();
+                $identifiers = [];
             }
         } else {
             $identifiers = $class->getIdentifierValues($value);
diff --git a/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php b/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
index 4f2681a88a63..14f44069eb08 100644
--- a/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
+++ b/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
@@ -30,7 +30,7 @@ class ConsoleFormatter implements FormatterInterface
     const SIMPLE_FORMAT = "%datetime% %start_tag%%level_name%%end_tag% <comment>[%channel%]</> %message%%context%%extra%\n";
     const SIMPLE_DATE = 'H:i:s';
 
-    private static $levelColorMap = array(
+    private static $levelColorMap = [
         Logger::DEBUG => 'fg=white',
         Logger::INFO => 'fg=green',
         Logger::NOTICE => 'fg=blue',
@@ -39,7 +39,7 @@ class ConsoleFormatter implements FormatterInterface
         Logger::CRITICAL => 'fg=red',
         Logger::ALERT => 'fg=red',
         Logger::EMERGENCY => 'fg=white;bg=red',
-    );
+    ];
 
     private $options;
     private $cloner;
@@ -53,13 +53,13 @@ class ConsoleFormatter implements FormatterInterface
      *   * colors: If true, the log string contains ANSI code to add color;
      *   * multiline: If false, "context" and "extra" are dumped on one line.
      */
-    public function __construct($options = array())
+    public function __construct($options = [])
     {
         // BC Layer
         if (!\is_array($options)) {
             @trigger_error(sprintf('The constructor arguments $format, $dateFormat, $allowInlineLineBreaks, $ignoreEmptyContextAndExtra of "%s" are deprecated since Symfony 3.3 and will be removed in 4.0. Use $options instead.', self::class), E_USER_DEPRECATED);
             $args = \func_get_args();
-            $options = array();
+            $options = [];
             if (isset($args[0])) {
                 $options['format'] = $args[0];
             }
@@ -74,25 +74,25 @@ public function __construct($options = array())
             }
         }
 
-        $this->options = array_replace(array(
+        $this->options = array_replace([
             'format' => self::SIMPLE_FORMAT,
             'date_format' => self::SIMPLE_DATE,
             'colors' => true,
             'multiline' => false,
             'ignore_empty_context_and_extra' => true,
-        ), $options);
+        ], $options);
 
         if (class_exists(VarCloner::class)) {
             $this->cloner = new VarCloner();
-            $this->cloner->addCasters(array(
-                '*' => array($this, 'castObject'),
-            ));
+            $this->cloner->addCasters([
+                '*' => [$this, 'castObject'],
+            ]);
 
             $this->outputBuffer = fopen('php://memory', 'r+b');
             if ($this->options['multiline']) {
                 $output = $this->outputBuffer;
             } else {
-                $output = array($this, 'echoLine');
+                $output = [$this, 'echoLine'];
             }
 
             $this->dumper = new CliDumper($output, null, CliDumper::DUMP_LIGHT_ARRAY | CliDumper::DUMP_COMMA_SEPARATOR);
@@ -132,7 +132,7 @@ public function format(array $record)
             $extra = '';
         }
 
-        $formatted = strtr($this->options['format'], array(
+        $formatted = strtr($this->options['format'], [
             '%datetime%' => $record['datetime']->format($this->options['date_format']),
             '%start_tag%' => sprintf('<%s>', $levelColor),
             '%level_name%' => sprintf('%-9s', $record['level_name']),
@@ -141,7 +141,7 @@ public function format(array $record)
             '%message%' => $this->replacePlaceHolder($record)['message'],
             '%context%' => $context,
             '%extra%' => $extra,
-        ));
+        ]);
 
         return $formatted;
     }
@@ -167,7 +167,7 @@ public function castObject($v, array $a, Stub $s, $isNested)
 
         if ($isNested && !$v instanceof \DateTimeInterface) {
             $s->cut = -1;
-            $a = array();
+            $a = [];
         }
 
         return $a;
@@ -183,7 +183,7 @@ private function replacePlaceHolder(array $record)
 
         $context = $record['context'];
 
-        $replacements = array();
+        $replacements = [];
         foreach ($context as $k => $v) {
             // Remove quotes added by the dumper around string.
             $v = trim($this->dumpData($v, false), '"');
diff --git a/src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php b/src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php
index 65e99f6f87b7..c27b0803e200 100644
--- a/src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php
@@ -22,7 +22,7 @@
  */
 class ChromePhpHandler extends BaseChromePhpHandler
 {
-    private $headers = array();
+    private $headers = [];
 
     /**
      * @var Response
@@ -40,7 +40,7 @@ public function onKernelResponse(FilterResponseEvent $event)
 
         if (!preg_match(static::USER_AGENT_REGEX, $event->getRequest()->headers->get('User-Agent'))) {
             $this->sendHeaders = false;
-            $this->headers = array();
+            $this->headers = [];
 
             return;
         }
@@ -49,7 +49,7 @@ public function onKernelResponse(FilterResponseEvent $event)
         foreach ($this->headers as $header => $content) {
             $this->response->headers->set($header, $content);
         }
-        $this->headers = array();
+        $this->headers = [];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Monolog/Handler/ConsoleHandler.php b/src/Symfony/Bridge/Monolog/Handler/ConsoleHandler.php
index 04943779dd24..5fc3051f44f2 100644
--- a/src/Symfony/Bridge/Monolog/Handler/ConsoleHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/ConsoleHandler.php
@@ -43,13 +43,13 @@
 class ConsoleHandler extends AbstractProcessingHandler implements EventSubscriberInterface
 {
     private $output;
-    private $verbosityLevelMap = array(
+    private $verbosityLevelMap = [
         OutputInterface::VERBOSITY_QUIET => Logger::ERROR,
         OutputInterface::VERBOSITY_NORMAL => Logger::WARNING,
         OutputInterface::VERBOSITY_VERBOSE => Logger::NOTICE,
         OutputInterface::VERBOSITY_VERY_VERBOSE => Logger::INFO,
         OutputInterface::VERBOSITY_DEBUG => Logger::DEBUG,
-    );
+    ];
 
     /**
      * @param OutputInterface|null $output            The console output to use (the handler remains disabled when passing null
@@ -58,7 +58,7 @@ class ConsoleHandler extends AbstractProcessingHandler implements EventSubscribe
      * @param array                $verbosityLevelMap Array that maps the OutputInterface verbosity to a minimum logging
      *                                                level (leave empty to use the default mapping)
      */
-    public function __construct(OutputInterface $output = null, $bubble = true, array $verbosityLevelMap = array())
+    public function __construct(OutputInterface $output = null, $bubble = true, array $verbosityLevelMap = [])
     {
         parent::__construct(Logger::DEBUG, $bubble);
         $this->output = $output;
@@ -131,10 +131,10 @@ public function onTerminate(ConsoleTerminateEvent $event)
      */
     public static function getSubscribedEvents()
     {
-        return array(
-            ConsoleEvents::COMMAND => array('onCommand', 255),
-            ConsoleEvents::TERMINATE => array('onTerminate', -255),
-        );
+        return [
+            ConsoleEvents::COMMAND => ['onCommand', 255],
+            ConsoleEvents::TERMINATE => ['onTerminate', -255],
+        ];
     }
 
     /**
@@ -158,10 +158,10 @@ protected function getDefaultFormatter()
             return new ConsoleFormatter();
         }
 
-        return new ConsoleFormatter(array(
+        return new ConsoleFormatter([
             'colors' => $this->output->isDecorated(),
             'multiline' => OutputInterface::VERBOSITY_DEBUG <= $this->output->getVerbosity(),
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Bridge/Monolog/Handler/DebugHandler.php b/src/Symfony/Bridge/Monolog/Handler/DebugHandler.php
index 05b1c6c56f7f..760ae081f8b2 100644
--- a/src/Symfony/Bridge/Monolog/Handler/DebugHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/DebugHandler.php
@@ -31,16 +31,16 @@ class DebugHandler extends TestHandler implements DebugLoggerInterface
      */
     public function getLogs()
     {
-        $records = array();
+        $records = [];
         foreach ($this->records as $record) {
-            $records[] = array(
+            $records[] = [
                 'timestamp' => $record['datetime']->getTimestamp(),
                 'message' => $record['message'],
                 'priority' => $record['level'],
                 'priorityName' => $record['level_name'],
                 'context' => $record['context'],
                 'channel' => isset($record['channel']) ? $record['channel'] : '',
-            );
+            ];
         }
 
         return $records;
@@ -52,7 +52,7 @@ public function getLogs()
     public function countErrors()
     {
         $cnt = 0;
-        $levels = array(Logger::ERROR, Logger::CRITICAL, Logger::ALERT, Logger::EMERGENCY);
+        $levels = [Logger::ERROR, Logger::CRITICAL, Logger::ALERT, Logger::EMERGENCY];
         foreach ($levels as $level) {
             if (isset($this->recordsByLevel[$level])) {
                 $cnt += \count($this->recordsByLevel[$level]);
diff --git a/src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php b/src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php
index 9956edad386d..9c3ec5f98144 100644
--- a/src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/FirePHPHandler.php
@@ -22,7 +22,7 @@
  */
 class FirePHPHandler extends BaseFirePHPHandler
 {
-    private $headers = array();
+    private $headers = [];
 
     /**
      * @var Response
@@ -42,7 +42,7 @@ public function onKernelResponse(FilterResponseEvent $event)
         if (!preg_match('{\bFirePHP/\d+\.\d+\b}', $request->headers->get('User-Agent'))
             && !$request->headers->has('X-FirePHP-Version')) {
             self::$sendHeaders = false;
-            $this->headers = array();
+            $this->headers = [];
 
             return;
         }
@@ -51,7 +51,7 @@ public function onKernelResponse(FilterResponseEvent $event)
         foreach ($this->headers as $header => $content) {
             $this->response->headers->set($header, $content);
         }
-        $this->headers = array();
+        $this->headers = [];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php b/src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php
index 8aa56a86f414..22582b68ef84 100644
--- a/src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php
@@ -24,7 +24,7 @@ class ServerLogHandler extends AbstractHandler
     private $context;
     private $socket;
 
-    public function __construct($host, $level = Logger::DEBUG, $bubble = true, $context = array())
+    public function __construct($host, $level = Logger::DEBUG, $bubble = true, $context = [])
     {
         parent::__construct($level, $bubble);
 
@@ -108,7 +108,7 @@ private function formatRecord(array $record)
 
         $recordFormatted = $this->getFormatter()->format($record);
 
-        foreach (array('log_uuid', 'uuid', 'uid') as $key) {
+        foreach (['log_uuid', 'uuid', 'uid'] as $key) {
             if (isset($record['extra'][$key])) {
                 $recordFormatted['log_id'] = $record['extra'][$key];
                 break;
diff --git a/src/Symfony/Bridge/Monolog/Logger.php b/src/Symfony/Bridge/Monolog/Logger.php
index 7cd75c5ec11c..a8b31cc09b91 100644
--- a/src/Symfony/Bridge/Monolog/Logger.php
+++ b/src/Symfony/Bridge/Monolog/Logger.php
@@ -30,7 +30,7 @@ public function getLogs()
             return $logger->getLogs();
         }
 
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php b/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
index 8774045192f3..3950268fb202 100644
--- a/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
+++ b/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
@@ -16,19 +16,19 @@
 
 class DebugProcessor implements DebugLoggerInterface
 {
-    private $records = array();
+    private $records = [];
     private $errorCount = 0;
 
     public function __invoke(array $record)
     {
-        $this->records[] = array(
+        $this->records[] = [
             'timestamp' => $record['datetime']->getTimestamp(),
             'message' => $record['message'],
             'priority' => $record['level'],
             'priorityName' => $record['level_name'],
             'context' => $record['context'],
             'channel' => isset($record['channel']) ? $record['channel'] : '',
-        );
+        ];
         switch ($record['level']) {
             case Logger::ERROR:
             case Logger::CRITICAL:
@@ -61,7 +61,7 @@ public function countErrors()
      */
     public function clear()
     {
-        $this->records = array();
+        $this->records = [];
         $this->errorCount = 0;
     }
 }
diff --git a/src/Symfony/Bridge/Monolog/Processor/TokenProcessor.php b/src/Symfony/Bridge/Monolog/Processor/TokenProcessor.php
index 11547be22b2e..7bf03a036a25 100644
--- a/src/Symfony/Bridge/Monolog/Processor/TokenProcessor.php
+++ b/src/Symfony/Bridge/Monolog/Processor/TokenProcessor.php
@@ -31,11 +31,11 @@ public function __invoke(array $records)
     {
         $records['extra']['token'] = null;
         if (null !== $token = $this->tokenStorage->getToken()) {
-            $records['extra']['token'] = array(
+            $records['extra']['token'] = [
                 'username' => $token->getUsername(),
                 'authenticated' => $token->isAuthenticated(),
                 'roles' => array_map(function ($role) { return $role->getRole(); }, $token->getRoles()),
-            );
+            ];
         }
 
         return $records;
diff --git a/src/Symfony/Bridge/Monolog/Processor/WebProcessor.php b/src/Symfony/Bridge/Monolog/Processor/WebProcessor.php
index 5222258e4693..987c72dda3ff 100644
--- a/src/Symfony/Bridge/Monolog/Processor/WebProcessor.php
+++ b/src/Symfony/Bridge/Monolog/Processor/WebProcessor.php
@@ -24,7 +24,7 @@ class WebProcessor extends BaseWebProcessor
     public function __construct(array $extraFields = null)
     {
         // Pass an empty array as the default null value would access $_SERVER
-        parent::__construct(array(), $extraFields);
+        parent::__construct([], $extraFields);
     }
 
     public function onKernelRequest(GetResponseEvent $event)
diff --git a/src/Symfony/Bridge/Monolog/Tests/Handler/ConsoleHandlerTest.php b/src/Symfony/Bridge/Monolog/Tests/Handler/ConsoleHandlerTest.php
index 0764f89151f1..0f042a90ae86 100644
--- a/src/Symfony/Bridge/Monolog/Tests/Handler/ConsoleHandlerTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/Handler/ConsoleHandlerTest.php
@@ -38,13 +38,13 @@ public function testConstructor()
     public function testIsHandling()
     {
         $handler = new ConsoleHandler();
-        $this->assertFalse($handler->isHandling(array()), '->isHandling returns false when no output is set');
+        $this->assertFalse($handler->isHandling([]), '->isHandling returns false when no output is set');
     }
 
     /**
      * @dataProvider provideVerbosityMappingTests
      */
-    public function testVerbosityMapping($verbosity, $level, $isHandling, array $map = array())
+    public function testVerbosityMapping($verbosity, $level, $isHandling, array $map = [])
     {
         $output = $this->getMockBuilder('Symfony\Component\Console\Output\OutputInterface')->getMock();
         $output
@@ -53,7 +53,7 @@ public function testVerbosityMapping($verbosity, $level, $isHandling, array $map
             ->will($this->returnValue($verbosity))
         ;
         $handler = new ConsoleHandler($output, true, $map);
-        $this->assertSame($isHandling, $handler->isHandling(array('level' => $level)),
+        $this->assertSame($isHandling, $handler->isHandling(['level' => $level]),
             '->isHandling returns correct value depending on console verbosity and log level'
         );
 
@@ -61,7 +61,7 @@ public function testVerbosityMapping($verbosity, $level, $isHandling, array $map
         $levelName = Logger::getLevelName($level);
         $levelName = sprintf('%-9s', $levelName);
 
-        $realOutput = $this->getMockBuilder('Symfony\Component\Console\Output\Output')->setMethods(array('doWrite'))->getMock();
+        $realOutput = $this->getMockBuilder('Symfony\Component\Console\Output\Output')->setMethods(['doWrite'])->getMock();
         $realOutput->setVerbosity($verbosity);
         if ($realOutput->isDebug()) {
             $log = "16:21:54 $levelName [app] My info message\n";
@@ -74,38 +74,38 @@ public function testVerbosityMapping($verbosity, $level, $isHandling, array $map
             ->with($log, false);
         $handler = new ConsoleHandler($realOutput, true, $map);
 
-        $infoRecord = array(
+        $infoRecord = [
             'message' => 'My info message',
-            'context' => array(),
+            'context' => [],
             'level' => $level,
             'level_name' => Logger::getLevelName($level),
             'channel' => 'app',
             'datetime' => new \DateTime('2013-05-29 16:21:54'),
-            'extra' => array(),
-        );
+            'extra' => [],
+        ];
         $this->assertFalse($handler->handle($infoRecord), 'The handler finished handling the log.');
     }
 
     public function provideVerbosityMappingTests()
     {
-        return array(
-            array(OutputInterface::VERBOSITY_QUIET, Logger::ERROR, true),
-            array(OutputInterface::VERBOSITY_QUIET, Logger::WARNING, false),
-            array(OutputInterface::VERBOSITY_NORMAL, Logger::WARNING, true),
-            array(OutputInterface::VERBOSITY_NORMAL, Logger::NOTICE, false),
-            array(OutputInterface::VERBOSITY_VERBOSE, Logger::NOTICE, true),
-            array(OutputInterface::VERBOSITY_VERBOSE, Logger::INFO, false),
-            array(OutputInterface::VERBOSITY_VERY_VERBOSE, Logger::INFO, true),
-            array(OutputInterface::VERBOSITY_VERY_VERBOSE, Logger::DEBUG, false),
-            array(OutputInterface::VERBOSITY_DEBUG, Logger::DEBUG, true),
-            array(OutputInterface::VERBOSITY_DEBUG, Logger::EMERGENCY, true),
-            array(OutputInterface::VERBOSITY_NORMAL, Logger::NOTICE, true, array(
+        return [
+            [OutputInterface::VERBOSITY_QUIET, Logger::ERROR, true],
+            [OutputInterface::VERBOSITY_QUIET, Logger::WARNING, false],
+            [OutputInterface::VERBOSITY_NORMAL, Logger::WARNING, true],
+            [OutputInterface::VERBOSITY_NORMAL, Logger::NOTICE, false],
+            [OutputInterface::VERBOSITY_VERBOSE, Logger::NOTICE, true],
+            [OutputInterface::VERBOSITY_VERBOSE, Logger::INFO, false],
+            [OutputInterface::VERBOSITY_VERY_VERBOSE, Logger::INFO, true],
+            [OutputInterface::VERBOSITY_VERY_VERBOSE, Logger::DEBUG, false],
+            [OutputInterface::VERBOSITY_DEBUG, Logger::DEBUG, true],
+            [OutputInterface::VERBOSITY_DEBUG, Logger::EMERGENCY, true],
+            [OutputInterface::VERBOSITY_NORMAL, Logger::NOTICE, true, [
                 OutputInterface::VERBOSITY_NORMAL => Logger::NOTICE,
-            )),
-            array(OutputInterface::VERBOSITY_DEBUG, Logger::NOTICE, true, array(
+            ]],
+            [OutputInterface::VERBOS
8000
ITY_DEBUG, Logger::NOTICE, true, [
                 OutputInterface::VERBOSITY_NORMAL => Logger::NOTICE,
-            )),
-        );
+            ]],
+        ];
     }
 
     public function testVerbosityChanged()
@@ -122,10 +122,10 @@ public function testVerbosityChanged()
             ->will($this->returnValue(OutputInterface::VERBOSITY_DEBUG))
         ;
         $handler = new ConsoleHandler($output);
-        $this->assertFalse($handler->isHandling(array('level' => Logger::NOTICE)),
+        $this->assertFalse($handler->isHandling(['level' => Logger::NOTICE]),
             'when verbosity is set to quiet, the handler does not handle the log'
         );
-        $this->assertTrue($handler->isHandling(array('level' => Logger::NOTICE)),
+        $this->assertTrue($handler->isHandling(['level' => Logger::NOTICE]),
             'since the verbosity of the output increased externally, the handler is now handling the log'
         );
     }
@@ -155,15 +155,15 @@ public function testWritingAndFormatting()
         $handler = new ConsoleHandler(null, false);
         $handler->setOutput($output);
 
-        $infoRecord = array(
+        $infoRecord = [
             'message' => 'My info message',
-            'context' => array(),
+            'context' => [],
             'level' => Logger::INFO,
             'level_name' => Logger::getLevelName(Logger::INFO),
             'channel' => 'app',
             'datetime' => new \DateTime('2013-05-29 16:21:54'),
-            'extra' => array(),
-        );
+            'extra' => [],
+        ];
 
         $this->assertTrue($handler->handle($infoRecord), 'The handler finished handling the log as bubble is false.');
     }
diff --git a/src/Symfony/Bridge/Monolog/Tests/Handler/FingersCrossed/NotFoundActivationStrategyTest.php b/src/Symfony/Bridge/Monolog/Tests/Handler/FingersCrossed/NotFoundActivationStrategyTest.php
index 3c34f065eb03..b04678106c96 100644
--- a/src/Symfony/Bridge/Monolog/Tests/Handler/FingersCrossed/NotFoundActivationStrategyTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/Handler/FingersCrossed/NotFoundActivationStrategyTest.php
@@ -28,28 +28,28 @@ public function testIsActivated($url, $record, $expected)
         $requestStack = new RequestStack();
         $requestStack->push(Request::create($url));
 
-        $strategy = new NotFoundActivationStrategy($requestStack, array('^/foo', 'bar'), Logger::WARNING);
+        $strategy = new NotFoundActivationStrategy($requestStack, ['^/foo', 'bar'], Logger::WARNING);
 
         $this->assertEquals($expected, $strategy->isHandlerActivated($record));
     }
 
     public function isActivatedProvider()
     {
-        return array(
-            array('/test',      array('level' => Logger::DEBUG), false),
-            array('/foo',       array('level' => Logger::DEBUG, 'context' => $this->getContextException(404)), false),
-            array('/baz/bar',   array('level' => Logger::ERROR, 'context' => $this->getContextException(404)), false),
-            array('/foo',       array('level' => Logger::ERROR, 'context' => $this->getContextException(404)), false),
-            array('/foo',       array('level' => Logger::ERROR, 'context' => $this->getContextException(500)), true),
-
-            array('/test',      array('level' => Logger::ERROR), true),
-            array('/baz',       array('level' => Logger::ERROR, 'context' => $this->getContextException(404)), true),
-            array('/baz',       array('level' => Logger::ERROR, 'context' => $this->getContextException(500)), true),
-        );
+        return [
+            ['/test',      ['level' => Logger::DEBUG], false],
+            ['/foo',       ['level' => Logger::DEBUG, 'context' => $this->getContextException(404)], false],
+            ['/baz/bar',   ['level' => Logger::ERROR, 'context' => $this->getContextException(404)], false],
+            ['/foo',       ['level' => Logger::ERROR, 'context' => $this->getContextException(404)], false],
+            ['/foo',       ['level' => Logger::ERROR, 'context' => $this->getContextException(500)], true],
+
+            ['/test',      ['level' => Logger::ERROR], true],
+            ['/baz',       ['level' => Logger::ERROR, 'context' => $this->getContextException(404)], true],
+            ['/baz',       ['level' => Logger::ERROR, 'context' => $this->getContextException(500)], true],
+        ];
     }
 
     protected function getContextException($code)
     {
-        return array('exception' => new HttpException($code));
+        return ['exception' => new HttpException($code)];
     }
 }
diff --git a/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php b/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
index 255d5efa7bb9..4631289d56b2 100644
--- a/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
@@ -25,7 +25,7 @@ class LoggerTest extends TestCase
     public function testGetLogsWithDebugHandler()
     {
         $handler = new DebugHandler();
-        $logger = new Logger(__METHOD__, array($handler));
+        $logger = new Logger(__METHOD__, [$handler]);
 
         $this->assertTrue($logger->error('error message'));
         $this->assertCount(1, $logger->getLogs());
@@ -34,10 +34,10 @@ public function testGetLogsWithDebugHandler()
     public function testGetLogsWithoutDebugProcessor()
     {
         $handler = new TestHandler();
-        $logger = new Logger(__METHOD__, array($handler));
+        $logger = new Logger(__METHOD__, [$handler]);
 
         $this->assertTrue($logger->error('error message'));
-        $this->assertSame(array(), $logger->getLogs());
+        $this->assertSame([], $logger->getLogs());
     }
 
     /**
@@ -46,7 +46,7 @@ public function testGetLogsWithoutDebugProcessor()
     public function testCountErrorsWithDebugHandler()
     {
         $handler = new DebugHandler();
-        $logger = new Logger(__METHOD__, array($handler));
+        $logger = new Logger(__METHOD__, [$handler]);
 
         $this->assertTrue($logger->debug('test message'));
         $this->assertTrue($logger->info('test message'));
@@ -80,7 +80,7 @@ public function testGetLogsWithDebugHandler2()
     public function testCountErrorsWithoutDebugProcessor()
     {
         $handler = new TestHandler();
-        $logger = new Logger(__METHOD__, array($handler));
+        $logger = new Logger(__METHOD__, [$handler]);
 
         $this->assertTrue($logger->error('error message'));
         $this->assertSame(0, $logger->countErrors());
@@ -90,7 +90,7 @@ public function testGetLogsWithDebugProcessor()
     {
         $handler = new TestHandler();
         $processor = new DebugProcessor();
-        $logger = new Logger(__METHOD__, array($handler), array($processor));
+        $logger = new Logger(__METHOD__, [$handler], [$processor]);
 
         $this->assertTrue($logger->error('error message'));
         $this->assertCount(1, $logger->getLogs());
@@ -100,7 +100,7 @@ public function testCountErrorsWithDebugProcessor()
     {
         $handler = new TestHandler();
         $processor = new DebugProcessor();
-        $logger = new Logger(__METHOD__, array($handler), array($processor));
+        $logger = new Logger(__METHOD__, [$handler], [$processor]);
 
         $this->assertTrue($logger->debug('test message'));
         $this->assertTrue($logger->info('test message'));
@@ -118,7 +118,7 @@ public function testCountErrorsWithDebugProcessor()
     public function testGetLogsWithDebugProcessor2()
     {
         $handler = new TestHandler();
-        $logger = new Logger('test', array($handler));
+        $logger = new Logger('test', [$handler]);
         $logger->pushProcessor(new DebugProcessor());
 
         $logger->addInfo('test');
@@ -132,7 +132,7 @@ public function testGetLogsWithDebugProcessor2()
     public function testClear()
     {
         $handler = new TestHandler();
-        $logger = new Logger('test', array($handler));
+        $logger = new Logger('test', [$handler]);
         $logger->pushProcessor(new DebugProcessor());
 
         $logger->addInfo('test');
diff --git a/src/Symfony/Bridge/Monolog/Tests/Processor/TokenProcessorTest.php b/src/Symfony/Bridge/Monolog/Tests/Processor/TokenProcessorTest.php
index e78acf47b54c..1b01348639b0 100644
--- a/src/Symfony/Bridge/Monolog/Tests/Processor/TokenProcessorTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/Processor/TokenProcessorTest.php
@@ -25,12 +25,12 @@ class TokenProcessorTest extends TestCase
 {
     public function testProcessor()
     {
-        $token = new UsernamePasswordToken('user', 'password', 'provider', array('ROLE_USER'));
+        $token = new UsernamePasswordToken('user', 'password', 'provider', ['ROLE_USER']);
         $tokenStorage = $this->getMockBuilder(TokenStorageInterface::class)->getMock();
         $tokenStorage->method('getToken')->willReturn($token);
 
         $processor = new TokenProcessor($tokenStorage);
-        $record = array('extra' => array());
+        $record = ['extra' => []];
         $record = $processor($record);
 
         $this->assertArrayHasKey('token', $record['extra']);
diff --git a/src/Symfony/Bridge/Monolog/Tests/Processor/WebProcessorTest.php b/src/Symfony/Bridge/Monolog/Tests/Processor/WebProcessorTest.php
index b62c83f426ea..4da83aa7d6d2 100644
--- a/src/Symfony/Bridge/Monolog/Tests/Processor/WebProcessorTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/Processor/WebProcessorTest.php
@@ -36,8 +36,8 @@ public function testUsesRequestServerData()
 
     public function testUseRequestClientIp()
     {
-        Request::setTrustedProxies(array('192.168.0.1'), Request::HEADER_X_FORWARDED_ALL);
-        list($event, $server) = $this->createRequestEvent(array('X_FORWARDED_FOR' => '192.168.0.2'));
+        Request::setTrustedProxies(['192.168.0.1'], Request::HEADER_X_FORWARDED_ALL);
+        list($event, $server) = $this->createRequestEvent(['X_FORWARDED_FOR' => '192.168.0.2']);
 
         $processor = new WebProcessor();
         $processor->onKernelRequest($event);
@@ -50,7 +50,7 @@ public function testUseRequestClientIp()
         $this->assertEquals($server['SERVER_NAME'], $record['extra']['server']);
         $this->assertEquals($server['HTTP_REFERER'], $record['extra']['referrer']);
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     public function testCanBeConstructedWithExtraFields()
@@ -61,7 +61,7 @@ public function testCanBeConstructedWithExtraFields()
 
         list($event, $server) = $this->createRequestEvent();
 
-        $processor = new WebProcessor(array('url', 'referrer'));
+        $processor = new WebProcessor(['url', 'referrer']);
         $processor->onKernelRequest($event);
         $record = $processor($this->getRecord());
 
@@ -73,16 +73,16 @@ public function testCanBeConstructedWithExtraFields()
     /**
      * @return array
      */
-    private function createRequestEvent($additionalServerParameters = array())
+    private function createRequestEvent($additionalServerParameters = [])
     {
         $server = array_merge(
-            array(
+            [
                 'REQUEST_URI' => 'A',
                 'REMOTE_ADDR' => '192.168.0.1',
                 'REQUEST_METHOD' => 'C',
                 'SERVER_NAME' => 'D',
                 'HTTP_REFERER' => 'E',
-            ),
+            ],
             $additionalServerParameters
         );
 
@@ -100,7 +100,7 @@ private function createRequestEvent($additionalServerParameters = array())
             ->method('getRequest')
             ->will($this->returnValue($request));
 
-        return array($event, $server);
+        return [$event, $server];
     }
 
     /**
@@ -111,15 +111,15 @@ private function createRequestEvent($additionalServerParameters = array())
      */
     private function getRecord($level = Logger::WARNING, $message = 'test')
     {
-        return array(
+        return [
             'message' => $message,
-            'context' => array(),
+            'context' => [],
             'level' => $level,
             'level_name' => Logger::getLevelName($level),
             'channel' => 'test',
             'datetime' => new \DateTime(),
-            'extra' => array(),
-        );
+            'extra' => [],
+        ];
     }
 
     private function isExtraFieldsSupported()
diff --git a/src/Symfony/Bridge/PhpUnit/ClockMock.php b/src/Symfony/Bridge/PhpUnit/ClockMock.php
index 4c5432f2603c..a29edd907886 100644
--- a/src/Symfony/Bridge/PhpUnit/ClockMock.php
+++ b/src/Symfony/Bridge/PhpUnit/ClockMock.php
@@ -73,7 +73,7 @@ public static function register($class)
     {
         $self = \get_called_class();
 
-        $mockedNs = array(substr($class, 0, strrpos($class, '\\')));
+        $mockedNs = [substr($class, 0, strrpos($class, '\\'))];
         if (0 < strpos($class, '\\Tests\\')) {
             $ns = str_replace('\\Tests\\', '\\', $class);
             $mockedNs[] = substr($ns, 0, strrpos($ns, '\\'));
diff --git a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
index b81eff528a12..2f275a109777 100644
--- a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
+++ b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
@@ -54,9 +54,9 @@ public static function register($mode = 0)
             if (false === $mode) {
                 $mode = getenv('SYMFONY_DEPRECATIONS_HELPER');
             }
-            if (DeprecationErrorHandler::MODE_DISABLED !== $mode
-                && DeprecationErrorHandler::MODE_WEAK !== $mode
-                && DeprecationErrorHandler::MODE_WEAK_VENDORS !== $mode
+            if (self::MODE_DISABLED !== $mode
+                && self::MODE_WEAK !== $mode
+                && self::MODE_WEAK_VENDORS !== $mode
                 && (!isset($mode[0]) || '/' !== $mode[0])
             ) {
                 $mode = preg_match('/^[1-9][0-9]*$/', $mode) ? (int) $mode : 0;
@@ -92,21 +92,21 @@ public static function register($mode = 0)
             return false;
         };
 
-        $deprecations = array(
+        $deprecations = [
             'unsilencedCount' => 0,
             'remainingCount' => 0,
             'legacyCount' => 0,
             'otherCount' => 0,
             'remaining vendorCount' => 0,
-            'unsilenced' => array(),
-            'remaining' => array(),
-            'legacy' => array(),
-            'other' => array(),
-            'remaining vendor' => array(),
-        );
-        $deprecationHandler = function ($type, $msg, $file, $line, $context = array()) use (&$deprecations, $getMode, $UtilPrefix, $inVendors) {
+            'unsilenced' => [],
+            'remaining' => [],
+            'legacy' => [],
+            'other' => [],
+            'remaining vendor' => [],
+        ];
+        $deprecationHandler = function ($type, $msg, $file, $line, $context = []) use (&$deprecations, $getMode, $UtilPrefix, $inVendors) {
             $mode = $getMode();
-            if ((E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) || DeprecationErrorHandler::MODE_DISABLED === $mode) {
+            if ((E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) || self::MODE_DISABLED === $mode) {
                 $ErrorHandler = $UtilPrefix.'ErrorHandler';
 
                 return $ErrorHandler::handleError($type, $msg, $file, $line, $context);
@@ -114,7 +114,7 @@ public static function register($mode = 0)
 
             $trace = debug_backtrace();
             $group = 'other';
-            $isVendor = DeprecationErrorHandler::MODE_WEAK_VENDORS === $mode && $inVendors($file);
+            $isVendor = self::MODE_WEAK_VENDORS === $mode && $inVendors($file);
 
             $i = \count($trace);
             while (1 < $i && (!isset($trace[--$i]['class']) || ('ReflectionMethod' === $trace[$i]['class'] || 0 === strpos($trace[$i]['class'], 'PHPUnit_') || 0 === strpos($trace[$i]['class'], 'PHPUnit\\')))) {
@@ -131,7 +131,7 @@ public static function register($mode = 0)
                     // \Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerTrait::endTest()
                     // then we need to use the serialized information to determine
                     // if the error has been triggered from vendor code.
-                    $isVendor = DeprecationErrorHandler::MODE_WEAK_VENDORS === $mode && isset($parsedMsg['triggering_file']) && $inVendors($parsedMsg['triggering_file']);
+                    $isVendor = self::MODE_WEAK_VENDORS === $mode && isset($parsedMsg['triggering_file']) && $inVendors($parsedMsg['triggering_file']);
                 } else {
                     $class = isset($trace[$i]['object']) ? \get_class($trace[$i]['object']) : $trace[$i]['class'];
                     $method = $trace[$i]['function'];
@@ -168,13 +168,13 @@ public static function register($mode = 0)
 
                     exit(1);
                 }
-                if ('legacy' !== $group && DeprecationErrorHandler::MODE_WEAK !== $mode) {
+                if ('legacy' !== $group && self::MODE_WEAK !== $mode) {
                     $ref = &$deprecations[$group][$msg]['count'];
                     ++$ref;
                     $ref = &$deprecations[$group][$msg][$class.'::'.$method];
                     ++$ref;
                 }
-            } elseif (DeprecationErrorHandler::MODE_WEAK !== $mode) {
+            } elseif (self::MODE_WEAK !== $mode) {
                 $ref = &$deprecations[$group][$msg]['count'];
                 ++$ref;
             }
@@ -184,7 +184,7 @@ public static function register($mode = 0)
 
         if (null !== $oldErrorHandler) {
             restore_error_handler();
-            if (array($UtilPrefix.'ErrorHandler', 'handleError') === $oldErrorHandler) {
+            if ([$UtilPrefix.'ErrorHandler', 'handleError'] === $oldErrorHandler) {
                 restore_error_handler();
                 self::register($mode);
             }
@@ -207,7 +207,7 @@ public static function register($mode = 0)
                 $currErrorHandler = set_error_handler('var_dump');
                 restore_error_handler();
 
-                if (DeprecationErrorHandler::MODE_WEAK === $mode) {
+                if (self::MODE_WEAK === $mode) {
                     $colorize = function ($str) { return $str; };
                 }
                 if ($currErrorHandler !== $deprecationHandler) {
@@ -218,8 +218,8 @@ public static function register($mode = 0)
                     return $b['count'] - $a['count'];
                 };
 
-                $groups = array('unsilenced', 'remaining');
-                if (DeprecationErrorHandler::MODE_WEAK_VENDORS === $mode) {
+                $groups = ['unsilenced', 'remaining'];
+                if (self::MODE_WEAK_VENDORS === $mode) {
                     $groups[] = 'remaining vendor';
                 }
                 array_push($groups, 'legacy', 'other');
@@ -255,11 +255,11 @@ public static function register($mode = 0)
                 $displayDeprecations($deprecations);
 
                 // store failing status
-                $isFailing = DeprecationErrorHandler::MODE_WEAK !== $mode && $mode < $deprecations['unsilencedCount'] + $deprecations['remainingCount'] + $deprecations['otherCount'];
+                $isFailing = self::MODE_WEAK !== $mode && $mode < $deprecations['unsilencedCount'] + $deprecations['remainingCount'] + $deprecations['otherCount'];
 
                 // reset deprecations array
                 foreach ($deprecations as $group => $arrayOrInt) {
-                    $deprecations[$group] = \is_int($arrayOrInt) ? 0 : array();
+                    $deprecations[$group] = \is_int($arrayOrInt) ? 0 : [];
                 }
 
                 register_shutdown_function(function () use (&$deprecations, $isFailing, $displayDeprecations, $mode) {
@@ -270,7 +270,7 @@ public static function register($mode = 0)
                         }
                     }
                     $displayDeprecations($deprecations);
-                    if ($isFailing || DeprecationErrorHandler::MODE_WEAK !== $mode && $mode < $deprecations['unsilencedCount'] + $deprecations['remainingCount'] + $deprecations['otherCount']) {
+                    if ($isFailing || self::MODE_WEAK !== $mode && $mode < $deprecations['unsilencedCount'] + $deprecations['remainingCount'] + $deprecations['otherCount']) {
                         exit(1);
                     }
                 });
@@ -280,8 +280,8 @@ public static function register($mode = 0)
 
     public static function collectDeprecations($outputFile)
     {
-        $deprecations = array();
-        $previousErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) use (&$deprecations, &$previousErrorHandler) {
+        $deprecations = [];
+        $previousErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$deprecations, &$previousErrorHandler) {
             if (E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) {
                 if ($previousErrorHandler) {
                     return $previousErrorHandler($type, $msg, $file, $line, $context);
@@ -293,7 +293,7 @@ public static function collectDeprecations($outputFile)
 
                 return $ErrorHandler::handleError($type, $msg, $file, $line, $context);
             }
-            $deprecations[] = array(error_reporting(), $msg, $file);
+            $deprecations[] = [error_reporting(), $msg, $file];
         });
 
         register_shutdown_function(function () use ($outputFile, &$deprecations) {
diff --git a/src/Symfony/Bridge/PhpUnit/DnsMock.php b/src/Symfony/Bridge/PhpUnit/DnsMock.php
index 790cfa91af5c..a58bf2efcde3 100644
--- a/src/Symfony/Bridge/PhpUnit/DnsMock.php
+++ b/src/Symfony/Bridge/PhpUnit/DnsMock.php
@@ -16,8 +16,8 @@
  */
 class DnsMock
 {
-    private static $hosts = array();
-    private static $dnsTypes = array(
+    private static $hosts = [];
+    private static $dnsTypes = [
         'A' => DNS_A,
         'MX' => DNS_MX,
         'NS' => DNS_NS,
@@ -30,7 +30,7 @@ class DnsMock
         'NAPTR' => DNS_NAPTR,
         'TXT' => DNS_TXT,
         'HINFO' => DNS_HINFO,
-    );
+    ];
 
     /**
      * Configures the mock values for DNS queries.
@@ -68,7 +68,7 @@ public static function getmxrr($hostname, &$mxhosts, &$weight = null)
         if (!self::$hosts) {
             return \getmxrr($hostname, $mxhosts, $weight);
         }
-        $mxhosts = $weight = array();
+        $mxhosts = $weight = [];
 
         if (isset(self::$hosts[$hostname])) {
             foreach (self::$hosts[$hostname] as $record) {
@@ -125,7 +125,7 @@ public static function gethostbynamel($hostname)
         $ips = false;
 
         if (isset(self::$hosts[$hostname])) {
-            $ips = array();
+            $ips = [];
 
             foreach (self::$hosts[$hostname] as $record) {
                 if ('A' === $record['type']) {
@@ -149,11 +149,11 @@ public static function dns_get_record($hostname, $type = DNS_ANY, &$authns = nul
             if (DNS_ANY === $type) {
                 $type = DNS_ALL;
             }
-            $records = array();
+            $records = [];
 
             foreach (self::$hosts[$hostname] as $record) {
                 if (isset(self::$dnsTypes[$record['type']]) && (self::$dnsTypes[$record['type']] & $type)) {
-                    $records[] = array_merge(array('host' => $hostname, 'class' => 'IN', 'ttl' => 1, 'type' => $record['type']), $record);
+                    $records[] = array_merge(['host' => $hostname, 'class' => 'IN', 'ttl' => 1, 'type' => $record['type']], $record);
                 }
             }
         }
@@ -165,7 +165,7 @@ public static function register($class)
     {
         $self = \get_called_class();
 
-        $mockedNs = array(substr($class, 0, strrpos($class, '\\')));
+        $mockedNs = [substr($class, 0, strrpos($class, '\\'))];
         if (0 < strpos($class, '\\Tests\\')) {
             $ns = str_replace('\\Tests\\', '\\', $class);
             $mockedNs[] = substr($ns, 0, strrpos($ns, '\\'));
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
index 8e9bdbe92ed4..07a9679d13c1 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
@@ -31,7 +31,7 @@ public function __construct(callable $sutFqcnResolver = null, $warningOnSutNotFo
     {
         $this->sutFqcnResolver = $sutFqcnResolver;
         $this->warningOnSutNotFound = $warningOnSutNotFound;
-        $this->warnings = array();
+        $this->warnings = [];
     }
 
     public function startTest($test)
@@ -42,7 +42,7 @@ public function startTest($test)
 
         $annotations = $test->getAnnotations();
 
-        $ignoredAnnotations = array('covers', 'coversDefaultClass', 'coversNothing');
+        $ignoredAnnotations = ['covers', 'coversDefaultClass', 'coversNothing'];
 
         foreach ($ignoredAnnotations as $annotation) {
             if (isset($annotations['class'][$annotation]) || isset($annotations['method'][$annotation])) {
@@ -74,11 +74,11 @@ public function startTest($test)
         $r->setAccessible(true);
 
         $cache = $r->getValue();
-        $cache = array_replace_recursive($cache, array(
-            \get_class($test) => array(
-                'covers' => array($sutFqcn),
-            ),
-        ));
+        $cache = array_replace_recursive($cache, [
+            \get_class($test) => [
+                'covers' => [$sutFqcn],
+            ],
+        ]);
         $r->setValue($testClass, $cache);
     }
 
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
index 2da40f2c204f..c825a8ddb2f3 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
@@ -22,7 +22,7 @@ class SymfonyTestsListenerForV5 extends \PHPUnit_Framework_BaseTestListener
 {
     private $trait;
 
-    public function __construct(array $mockedNamespaces = array())
+    public function __construct(array $mockedNamespaces = [])
     {
         $this->trait = new SymfonyTestsListenerTrait($mockedNamespaces);
     }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php
index 5b864bfe58a3..0c0b57080e01 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php
@@ -27,7 +27,7 @@ class SymfonyTestsListenerForV6 extends BaseTestListener
 {
     private $trait;
 
-    public function __construct(array $mockedNamespaces = array())
+    public function __construct(array $mockedNamespaces = [])
     {
         $this->trait = new SymfonyTestsListenerTrait($mockedNamespaces);
     }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php
index 18bbdbeba0f0..25ad718a8041 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php
@@ -30,7 +30,7 @@ class SymfonyTestsListenerForV7 implements TestListener
 
     private $trait;
 
-    public function __construct(array $mockedNamespaces = array())
+    public function __construct(array $mockedNamespaces = [])
     {
         $this->trait = new SymfonyTestsListenerTrait($mockedNamespaces);
     }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
index 6333c4fd763a..140434428a31 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
@@ -31,10 +31,10 @@ class SymfonyTestsListenerTrait
     private static $globallyEnabled = false;
     private $state = -1;
     private $skippedFile = false;
-    private $wasSkipped = array();
-    private $isSkipped = array();
-    private $expectedDeprecations = array();
-    private $gatheredDeprecations = array();
+    private $wasSkipped = [];
+    private $isSkipped = [];
+    private $expectedDeprecations = [];
+    private $gatheredDeprecations = [];
     private $previousErrorHandler;
     private $testsWithWarnings;
     private $reportUselessTests;
@@ -44,7 +44,7 @@ class SymfonyTestsListenerTrait
     /**
      * @param array $mockedNamespaces List of namespaces, indexed by mocked features (time-sensitive or dns-sensitive)
      */
-    public function __construct(array $mockedNamespaces = array())
+    public function __construct(array $mockedNamespaces = [])
     {
         if (class_exists('PHPUnit_Util_Blacklist')) {
             \PHPUnit_Util_Blacklist::$blacklistedClassNames['\Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerTrait'] = 2;
@@ -55,7 +55,7 @@ public function __construct(array $mockedNamespaces = array())
         $warn = false;
         foreach ($mockedNamespaces as $type => $namespaces) {
             if (!\is_array($namespaces)) {
-                $namespaces = array($namespaces);
+                $namespaces = [$namespaces];
             }
             if (\is_int($type)) {
                 // @deprecated BC with v2.8 to v3.0
@@ -104,7 +104,7 @@ public function startTestSuite($suite)
             $Test = 'PHPUnit\Util\Test';
         }
         $suiteName = $suite->getName();
-        $this->testsWithWarnings = array();
+        $this->testsWithWarnings = [];
 
         foreach ($suite->tests() as $test) {
             if (!($test instanceof \PHPUnit\Framework\TestCase || $test instanceof TestCase)) {
@@ -135,11 +135,11 @@ public function startTestSuite($suite)
 
                     if (!$this->wasSkipped = require $this->skippedFile) {
                         echo "All tests already ran successfully.\n";
-                        $suite->setTests(array());
+                        $suite->setTests([]);
                     }
                 }
             }
-            $testSuites = array($suite);
+            $testSuites = [$suite];
             for ($i = 0; isset($testSuites[$i]); ++$i) {
                 foreach ($testSuites[$i]->tests() as $test) {
                     if ($test instanceof \PHPUnit_Framework_TestSuite || $test instanceof TestSuite) {
@@ -158,7 +158,7 @@ public function startTestSuite($suite)
                 }
             }
         } elseif (2 === $this->state) {
-            $skipped = array();
+            $skipped = [];
             foreach ($suite->tests() as $test) {
                 if (!($test instanceof \PHPUnit\Framework\TestCase || $test instanceof TestCase)
                     || isset($this->wasSkipped[$suiteName]['*'])
@@ -230,7 +230,7 @@ public function startTest($test)
                 $test->getTestResultObject()->beStrictAboutTestsThatDoNotTestAnything(false);
 
                 $this->expectedDeprecations = $annotations['method']['expectedDeprecation'];
-                $this->previousErrorHandler = set_error_handler(array($this, 'handleError'));
+                $this->previousErrorHandler = set_error_handler([$this, 'handleError']);
             }
         }
     }
@@ -271,8 +271,8 @@ public function endTest($test, $time)
             $deprecations = file_get_contents($this->runsInSeparateProcess);
             unlink($this->runsInSeparateProcess);
             putenv('SYMFONY_DEPRECATIONS_SERIALIZE');
-            foreach ($deprecations ? unserialize($deprecations) : array() as $deprecation) {
-                $error = serialize(array('deprecation' => $deprecation[1], 'class' => $className, 'method' => $test->getName(false), 'triggering_file' => isset($deprecation[2]) ? $deprecation[2] : null));
+            foreach ($deprecations ? unserialize($deprecations) : [] as $deprecation) {
+                $error = serialize(['deprecation' => $deprecation[1], 'class' => $className, 'method' => $test->getName(false), 'triggering_file' => isset($deprecation[2]) ? $deprecation[2] : null]);
                 if ($deprecation[0]) {
                     @trigger_error($error, E_USER_DEPRECATED);
                 } else {
@@ -283,13 +283,13 @@ public function endTest($test, $time)
         }
 
         if ($this->expectedDeprecations) {
-            if (!\in_array($test->getStatus(), array($BaseTestRunner::STATUS_SKIPPED, $BaseTestRunner::STATUS_INCOMPLETE), true)) {
+            if (!\in_array($test->getStatus(), [$BaseTestRunner::STATUS_SKIPPED, $BaseTestRunner::STATUS_INCOMPLETE], true)) {
                 $test->addToAssertionCount(\count($this->expectedDeprecations));
             }
 
             rest
8000
ore_error_handler();
 
-            if (!$errored && !\in_array($test->getStatus(), array($BaseTestRunner::STATUS_SKIPPED, $BaseTestRunner::STATUS_INCOMPLETE, $BaseTestRunner::STATUS_FAILURE, $BaseTestRunner::STATUS_ERROR), true)) {
+            if (!$errored && !\in_array($test->getStatus(), [$BaseTestRunner::STATUS_SKIPPED, $BaseTestRunner::STATUS_INCOMPLETE, $BaseTestRunner::STATUS_FAILURE, $BaseTestRunner::STATUS_ERROR], true)) {
                 try {
                     $prefix = "@expectedDeprecation:\n";
                     $test->assertStringMatchesFormat($prefix.'%A  '.implode("\n%A  ", $this->expectedDeprecations)."\n%A", $prefix.'  '.implode("\n  ", $this->gatheredDeprecations)."\n");
@@ -300,7 +300,7 @@ public function endTest($test, $time)
                 }
             }
 
-            $this->expectedDeprecations = $this->gatheredDeprecations = array();
+            $this->expectedDeprecations = $this->gatheredDeprecations = [];
             $this->previousErrorHandler = null;
         }
         if (!$this->runsInSeparateProcess && -2 < $this->state && ($test instanceof \PHPUnit\Framework\TestCase || $test instanceof TestCase)) {
@@ -308,7 +308,7 @@ public function endTest($test, $time)
                 ClockMock::withClockMock(false);
             }
             if (\in_array('dns-sensitive', $groups, true)) {
-                DnsMock::withMockedHosts(array());
+                DnsMock::withMockedHosts([]);
             }
         }
 
@@ -329,7 +329,7 @@ public function endTest($test, $time)
         }
     }
 
-    public function handleError($type, $msg, $file, $line, $context = array())
+    public function handleError($type, $msg, $file, $line, $context = [])
     {
         if (E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) {
             $h = $this->previousErrorHandler;
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV5.php b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV5.php
index 7897861cf52f..1a89019fe306 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV5.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV5.php
@@ -27,7 +27,7 @@ protected function handleConfiguration(array &$arguments)
 
         $result = parent::handleConfiguration($arguments);
 
-        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : array();
+        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : [];
 
         $registeredLocally = false;
 
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV6.php b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV6.php
index 6da7c6544853..8489a58627fa 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV6.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV6.php
@@ -30,7 +30,7 @@ protected function handleConfiguration(array &$arguments)
 
         parent::handleConfiguration($arguments);
 
-        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : array();
+        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : [];
 
         $registeredLocally = false;
 
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV7.php b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV7.php
index a175fb65d7f5..bc5fff95ba71 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV7.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV7.php
@@ -30,7 +30,7 @@ protected function handleConfiguration(array &$arguments): void
 
         parent::handleConfiguration($arguments);
 
-        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : array();
+        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : [];
 
         $registeredLocally = false;
 
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DnsMockTest.php b/src/Symfony/Bridge/PhpUnit/Tests/DnsMockTest.php
index a178ac7e898c..ebbc87a77067 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DnsMockTest.php
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DnsMockTest.php
@@ -18,15 +18,15 @@ class DnsMockTest extends TestCase
 {
     protected function tearDown()
     {
-        DnsMock::withMockedHosts(array());
+        DnsMock::withMockedHosts([]);
     }
 
     public function testCheckdnsrr()
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => 'MX'))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => 'MX']]]);
         $this->assertTrue(DnsMock::checkdnsrr('example.com'));
 
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => 'A'))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => 'A']]]);
         $this->assertFalse(DnsMock::checkdnsrr('example.com'));
         $this->assertTrue(DnsMock::checkdnsrr('example.com', 'a'));
         $this->assertTrue(DnsMock::checkdnsrr('example.com', 'any'));
@@ -35,34 +35,34 @@ public function testCheckdnsrr()
 
     public function testGetmxrr()
     {
-        DnsMock::withMockedHosts(array(
-            'example.com' => array(array(
+        DnsMock::withMockedHosts([
+            'example.com' => [[
                 'type' => 'MX',
                 'host' => 'mx.example.com',
                 'pri' => 10,
-            )),
-        ));
+            ]],
+        ]);
 
         $this->assertFalse(DnsMock::getmxrr('foobar.com', $mxhosts, $weight));
         $this->assertTrue(DnsMock::getmxrr('example.com', $mxhosts, $weight));
-        $this->assertSame(array('mx.example.com'), $mxhosts);
-        $this->assertSame(array(10), $weight);
+        $this->assertSame(['mx.example.com'], $mxhosts);
+        $this->assertSame([10], $weight);
     }
 
     public function testGethostbyaddr()
     {
-        DnsMock::withMockedHosts(array(
-            'example.com' => array(
-                array(
+        DnsMock::withMockedHosts([
+            'example.com' => [
+                [
                     'type' => 'A',
                     'ip' => '1.2.3.4',
-                ),
-                array(
+                ],
+                [
                     'type' => 'AAAA',
                     'ipv6' => '::12',
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $this->assertSame('::21', DnsMock::gethostbyaddr('::21'));
         $this->assertSame('example.com', DnsMock::gethostbyaddr('::12'));
@@ -71,18 +71,18 @@ public function testGethostbyaddr()
 
     public function testGethostbyname()
     {
-        DnsMock::withMockedHosts(array(
-            'example.com' => array(
-                array(
+        DnsMock::withMockedHosts([
+            'example.com' => [
+                [
                     'type' => 'AAAA',
                     'ipv6' => '::12',
-                ),
-                array(
+                ],
+                [
                     'type' => 'A',
                     'ip' => '1.2.3.4',
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $this->assertSame('foobar.com', DnsMock::gethostbyname('foobar.com'));
         $this->assertSame('1.2.3.4', DnsMock::gethostbyname('example.com'));
@@ -90,59 +90,59 @@ public function testGethostbyname()
 
     public function testGethostbynamel()
     {
-        DnsMock::withMockedHosts(array(
-            'example.com' => array(
-                array(
+        DnsMock::withMockedHosts([
+            'example.com' => [
+                [
                     'type' => 'A',
                     'ip' => '1.2.3.4',
-                ),
-                array(
+                ],
+                [
                     'type' => 'A',
                     'ip' => '2.3.4.5',
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $this->assertFalse(DnsMock::gethostbynamel('foobar.com'));
-        $this->assertSame(array('1.2.3.4', '2.3.4.5'), DnsMock::gethostbynamel('example.com'));
+        $this->assertSame(['1.2.3.4', '2.3.4.5'], DnsMock::gethostbynamel('example.com'));
     }
 
     public function testDnsGetRecord()
     {
-        DnsMock::withMockedHosts(array(
-            'example.com' => array(
-                array(
+        DnsMock::withMockedHosts([
+            'example.com' => [
+                [
                     'type' => 'A',
                     'ip' => '1.2.3.4',
-                ),
-                array(
+                ],
+                [
                     'type' => 'PTR',
                     'ip' => '2.3.4.5',
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
-        $records = array(
-            array(
+        $records = [
+            [
                 'host' => 'example.com',
                 'class' => 'IN',
                 'ttl' => 1,
                 'type' => 'A',
                 'ip' => '1.2.3.4',
-            ),
-            $ptr = array(
+            ],
+            $ptr = [
                 'host' => 'example.com',
                 'class' => 'IN',
                 'ttl' => 1,
                 'type' => 'PTR',
                 'ip' => '2.3.4.5',
-            ),
-        );
+            ],
+        ];
 
         $this->assertFalse(DnsMock::dns_get_record('foobar.com'));
         $this->assertSame($records, DnsMock::dns_get_record('example.com'));
         $this->assertSame($records, DnsMock::dns_get_record('example.com', DNS_ALL));
         $this->assertSame($records, DnsMock::dns_get_record('example.com', DNS_A | DNS_PTR));
-        $this->assertSame(array($ptr), DnsMock::dns_get_record('example.com', DNS_PTR));
+        $this->assertSame([$ptr], DnsMock::dns_get_record('example.com', DNS_PTR));
     }
 }
diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Dumper/PhpDumperTest.php b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Dumper/PhpDumperTest.php
index 7c7464133315..647d1667c3ea 100644
--- a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Dumper/PhpDumperTest.php
@@ -69,6 +69,6 @@ private function dumpLazyServiceProjectServiceContainer()
 
         $dumper->setProxyDumper(new ProxyDumper());
 
-        return $dumper->dump(array('class' => 'LazyServiceProjectServiceContainer'));
+        return $dumper->dump(['class' => 'LazyServiceProjectServiceContainer']);
     }
 }
diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Fixtures/includes/foo.php b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Fixtures/includes/foo.php
index 8ffc5be9af40..435e9a4d77bf 100644
--- a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Fixtures/includes/foo.php
+++ b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Fixtures/includes/foo.php
@@ -11,14 +11,14 @@ class ProxyManagerBridgeFooClass
     public $initialized = false;
     public $configured = false;
     public $called = false;
-    public $arguments = array();
+    public $arguments = [];
 
-    public function __construct($arguments = array())
+    public function __construct($arguments = [])
     {
         $this->arguments = $arguments;
     }
 
-    public static function getInstance($arguments = array())
+    public static function getInstance($arguments = [])
     {
         $obj = new self($arguments);
         $obj->called = true;
diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
index 8bdc63146605..2f7ee38cce2a 100644
--- a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
+++ b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
@@ -98,18 +98,18 @@ public function testCorrectAssigning(Definition $definition, $access)
 
     public function getPrivatePublicDefinitions()
     {
-        return array(
-            array(
+        return [
+            [
                 (new Definition(__CLASS__))
                     ->setPublic(false),
                 \method_exists(ContainerBuilder::class, 'addClassResource') ? 'services' : 'privates',
-            ),
-            array(
+            ],
+            [
                 (new Definition(__CLASS__))
                     ->setPublic(true),
                 'services',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -134,12 +134,12 @@ public function testLegacyGetProxyFactoryCode()
      */
     public function getProxyCandidates()
     {
-        $definitions = array(
-            array(new Definition(__CLASS__), true),
-            array(new Definition('stdClass'), true),
-            array(new Definition(uniqid('foo', true)), false),
-            array(new Definition(), false),
-        );
+        $definitions = [
+            [new Definition(__CLASS__), true],
+            [new Definition('stdClass'), true],
+            [new Definition(uniqid('foo', true)), false],
+            [new Definition(), false],
+        ];
 
         array_map(
             function ($definition) {
diff --git a/src/Symfony/Bridge/Twig/AppVariable.php b/src/Symfony/Bridge/Twig/AppVariable.php
index 702edcbceaa7..d3fb5a55b3b8 100644
--- a/src/Symfony/Bridge/Twig/AppVariable.php
+++ b/src/Symfony/Bridge/Twig/AppVariable.php
@@ -159,13 +159,13 @@ public function getFlashes($types = null)
         try {
             $session = $this->getSession();
             if (null === $session) {
-                return array();
+                return [];
             }
         } catch (\RuntimeException $e) {
-            return array();
+            return [];
         }
 
-        if (null === $types || '' === $types || array() === $types) {
+        if (null === $types || '' === $types || [] === $types) {
             return $session->getFlashBag()->all();
         }
 
@@ -173,7 +173,7 @@ public function getFlashes($types = null)
             return $session->getFlashBag()->get($types);
         }
 
-        $result = array();
+        $result = [];
         foreach ($types as $type) {
             $result[$type] = $session->getFlashBag()->get($type);
         }
diff --git a/src/Symfony/Bridge/Twig/Command/DebugCommand.php b/src/Symfony/Bridge/Twig/Command/DebugCommand.php
index a119aa7ae97b..34dc160b3456 100644
--- a/src/Symfony/Bridge/Twig/Command/DebugCommand.php
+++ b/src/Symfony/Bridge/Twig/Command/DebugCommand.php
@@ -72,10 +72,10 @@ protected function getTwigEnvironment()
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('filter', InputArgument::OPTIONAL, 'Show details for all entries matching this filter'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (text or json)', 'text'),
-            ))
+            ])
             ->setDescription('Shows a list of twig functions, filters, globals and tests')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command outputs a list of twig functions,
@@ -114,10 +114,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
             throw new \RuntimeException('The Twig environment needs to be set.');
         }
 
-        $types = array('functions', 'filters', 'tests', 'globals');
+        $types = ['functions', 'filters', 'tests', 'globals'];
 
         if ('json' === $input->getOption('format')) {
-            $data = array();
+            $data = [];
             foreach ($types as $type) {
                 foreach ($this->twig->{'get'.ucfirst($type)}() as $name => $entity) {
                     $data[$type][$name] = $this->getMetadata($type, $entity);
@@ -133,7 +133,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $filter = $input->getArgument('filter');
 
         foreach ($types as $index => $type) {
-            $items = array();
+            $items = [];
             foreach ($this->twig->{'get'.ucfirst($type)}() as $name => $entity) {
                 if (!$filter || false !== strpos($name, $filter)) {
                     $items[$name] = $name.$this->getPrettyMetadata($type, $entity);
@@ -150,20 +150,20 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $io->listing($items);
         }
 
-        $rows = array();
+        $rows = [];
         $firstNamespace = true;
         $prevHasSeparator = false;
         foreach ($this->getLoaderPaths() as $namespace => $paths) {
             if (!$firstNamespace && !$prevHasSeparator && \count($paths) > 1) {
-                $rows[] = array('', '');
+                $rows[] = ['', ''];
             }
             $firstNamespace = false;
             foreach ($paths as $path) {
-                $rows[] = array($namespace, $path.\DIRECTORY_SEPARATOR);
+                $rows[] = [$namespace, $path.\DIRECTORY_SEPARATOR];
                 $namespace = '';
             }
             if (\count($paths) > 1) {
-                $rows[] = array('', '');
+                $rows[] = ['', ''];
                 $prevHasSeparator = true;
             } else {
                 $prevHasSeparator = false;
@@ -173,7 +173,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             array_pop($rows);
         }
         $io->section('Loader Paths');
-        $io->table(array('Namespace', 'Paths'), $rows);
+        $io->table(['Namespace', 'Paths'], $rows);
 
         return 0;
     }
@@ -181,10 +181,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
     private function getLoaderPaths()
     {
         if (!($loader = $this->twig->getLoader()) instanceof FilesystemLoader) {
-            return array();
+            return [];
         }
 
-        $loaderPaths = array();
+        $loaderPaths = [];
         foreach ($loader->getNamespaces() as $namespace) {
             $paths = array_map(function ($path) {
                 if (null !== $this->projectDir && 0 === strpos($path, $this->projectDir)) {
diff --git a/src/Symfony/Bridge/Twig/Command/LintCommand.php b/src/Symfony/Bridge/Twig/Command/LintCommand.php
index cb14e5c35988..c8b5bb5ba2a0 100644
--- a/src/Symfony/Bridge/Twig/Command/LintCommand.php
+++ b/src/Symfony/Bridge/Twig/Command/LintCommand.php
@@ -129,7 +129,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 $template .= fread(STDIN, 1024);
             }
 
-            return $this->display($input, $output, $io, array($this->validate($template, uniqid('sf_', true))));
+            return $this->display($input, $output, $io, [$this->validate($template, uniqid('sf_', true))]);
         }
 
         $filesInfo = $this->getFilesInfo($filenames);
@@ -139,7 +139,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
     private function getFilesInfo(array $filenames)
     {
-        $filesInfo = array();
+        $filesInfo = [];
         foreach ($filenames as $filename) {
             foreach ($this->findFiles($filename) as $file) {
                 $filesInfo[] = $this->validate(file_get_contents($file), $file);
@@ -152,7 +152,7 @@ private function getFilesInfo(array $filenames)
     protected function findFiles($filename)
     {
         if (is_file($filename)) {
-            return array($filename);
+            return [$filename];
         } elseif (is_dir($filename)) {
             return Finder::create()->files()->in($filename)->name('*.twig');
         }
@@ -164,7 +164,7 @@ private function validate($template, $file)
     {
         $realLoader = $this->twig->getLoader();
         try {
-            $temporaryLoader = new ArrayLoader(array((string) $file => $template));
+            $temporaryLoader = new ArrayLoader([(string) $file => $template]);
             $this->twig->setLoader($temporaryLoader);
             $nodeTree = $this->twig->parse($this->twig->tokenize(new Source($template, (string) $file)));
             $this->twig->compile($nodeTree);
@@ -172,10 +172,10 @@ private function validate($template, $file)
         } catch (Error $e) {
             $this->twig->setLoader($realLoader);
 
-            return array('template' => $template, 'file' => $file, 'line' => $e->getTemplateLine(), 'valid' => false, 'exception' => $e);
+            return ['template' => $template, 'file' => $file, 'line' => $e->getTemplateLine(), 'valid' => false, 'exception' => $e];
         }
 
-        return array('template' => $template, 'file' => $file, 'valid' => true);
+        return ['template' => $template, 'file' => $file, 'valid' => true];
     }
 
     private function display(InputInterface $input, OutputInterface $output, SymfonyStyle $io, $files)
@@ -261,7 +261,7 @@ private function getContext($template, $line, $context = 3)
         $position = max(0, $line - $context);
         $max = min(\count($lines), $line - 1 + $context);
 
-        $result = array();
+        $result = [];
         while ($position < $max) {
             $result[$position + 1] = $lines[$position];
             ++$position;
diff --git a/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php b/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
index 392b9a617c63..04b8dda56730 100644
--- a/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
+++ b/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
@@ -51,7 +51,7 @@ public function reset()
     {
         $this->profile->reset();
         $this->computed = null;
-        $this->data = array();
+        $this->data = [];
     }
 
     /**
@@ -60,7 +60,7 @@ public function reset()
     public function lateCollect()
     {
         $this->data['profile'] = serialize($this->profile);
-        $this->data['template_paths'] = array();
+        $this->data['template_paths'] = [];
 
         if (null === $this->twig) {
             return;
@@ -122,15 +122,15 @@ public function getHtmlCallGraph()
         $dump = $dumper->dump($this->getProfile());
 
         // needed to remove the hardcoded CSS styles
-        $dump = str_replace(array(
+        $dump = str_replace([
             '<span style="background-color: #ffd">',
             '<span style="color: #d44">',
             '<span style="background-color: #dfd">',
-        ), array(
+        ], [
             '<span class="status-warning">',
             '<span class="status-error">',
             '<span class="status-success">',
-        ), $dump);
+        ], $dump);
 
         return new Markup($dump, 'UTF-8');
     }
@@ -139,7 +139,7 @@ public function getProfile()
     {
         if (null === $this->profile) {
             if (\PHP_VERSION_ID >= 70000) {
-                $this->profile = unserialize($this->data['profile'], array('allowed_classes' => array('Twig_Profiler_Profile', 'Twig\Profiler\Profile')));
+                $this->profile = unserialize($this->data['profile'], ['allowed_classes' => ['Twig_Profiler_Profile', 'Twig\Profiler\Profile']]);
             } else {
                 $this->profile = unserialize($this->data['profile']);
             }
@@ -159,13 +159,13 @@ private function getComputedData($index)
 
     private function computeData(Profile $profile)
     {
-        $data = array(
+        $data = [
             'template_count' => 0,
             'block_count' => 0,
             'macro_count' => 0,
-        );
+        ];
 
-        $templates = array();
+        $templates = [];
         foreach ($profile as $p) {
             $d = $this->computeData($p);
 
diff --git a/src/Symfony/Bridge/Twig/Extension/AssetExtension.php b/src/Symfony/Bridge/Twig/Extension/AssetExtension.php
index d5d70fb397f6..cc2cdb268e5b 100644
--- a/src/Symfony/Bridge/Twig/Extension/AssetExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/AssetExtension.php
@@ -34,10 +34,10 @@ public function __construct(Packages $packages)
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('asset', array($this, 'getAssetUrl')),
-            new TwigFunction('asset_version', array($this, 'getAssetVersion')),
-        );
+        return [
+            new TwigFunction('asset', [$this, 'getAssetUrl']),
+            new TwigFunction('asset_version', [$this, 'getAssetVersion']),
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/CodeExtension.php b/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
index 5bc383d5f548..55855427e99a 100644
--- a/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
@@ -43,17 +43,17 @@ public function __construct($fileLinkFormat, $rootDir, $charset)
      */
     public function getFilters()
     {
-        return array(
-            new TwigFilter('abbr_class', array($this, 'abbrClass'), array('is_safe' => array('html'))),
-            new TwigFilter('abbr_method', array($this, 'abbrMethod'), array('is_safe' => array('html'))),
-            new TwigFilter('format_args', array($this, 'formatArgs'), array('is_safe' => array('html'))),
-            new TwigFilter('format_args_as_text', array($this, 'formatArgsAsText')),
-            new TwigFilter('file_excerpt', array($this, 'fileExcerpt'), array('is_safe' => array('html'))),
-            new TwigFilter('format_file', array($this, 'formatFile'), array('is_safe' => array('html'))),
-            new TwigFilter('format_file_from_text', array($this, 'formatFileFromText'), array('is_safe' => array('html'))),
-            new TwigFilter('format_log_message', array($this, 'formatLogMessage'), array('is_safe' => array('html'))),
-            new TwigFilter('file_link', array($this, 'getFileLink')),
-        );
+        return [
+            new TwigFilter('abbr_class', [$this, 'abbrClass'], ['is_safe' => ['html']]),
+            new TwigFilter('abbr_method', [$this, 'abbrMethod'], ['is_safe' => ['html']]),
+            new TwigFilter('format_args', [$this, 'formatArgs'], ['is_safe' => ['html']]),
+            new TwigFilter('format_args_as_text', [$this, 'formatArgsAsText']),
+            new TwigFilter('file_excerpt', [$this, 'fileExcerpt'], ['is_safe' => ['html']]),
+            new TwigFilter('format_file', [$this, 'formatFile'], ['is_safe' => ['html']]),
+            new TwigFilter('format_file_from_text', [$this, 'formatFileFromText'], ['is_safe' => ['html']]),
+            new TwigFilter('format_log_message', [$this, 'formatLogMessage'], ['is_safe' => ['html']]),
+            new TwigFilter('file_link', [$this, 'getFileLink']),
+        ];
     }
 
     public function abbrClass($class)
@@ -87,7 +87,7 @@ public function abbrMethod($method)
      */
     public function formatArgs($args)
     {
-        $result = array();
+        $result = [];
         foreach ($args as $key => $item) {
             if ('object' === $item[0]) {
                 $parts = explode('\\', $item[1]);
@@ -146,7 +146,7 @@ public function fileExcerpt($file, $line, $srcContext = 3)
             }, $code);
             $content = explode('<br />', $code);
 
-            $lines = array();
+            $lines = [];
             if (0 > $srcContext) {
                 $srcContext = \count($content);
             }
@@ -205,7 +205,7 @@ public function formatFile($file, $line, $text = null)
     public function getFileLink($file, $line)
     {
         if ($fmt = $this->fileLinkFormat) {
-            return \is_string($fmt) ? strtr($fmt, array('%f' => $file, '%l' => $line)) : $fmt->format($file, $line);
+            return \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line);
         }
 
         return false;
@@ -224,7 +224,7 @@ public function formatFileFromText($text)
     public function formatLogMessage($message, array $context)
     {
         if ($context && false !== strpos($message, '{')) {
-            $replacements = array();
+            $replacements = [];
             foreach ($context as $key => $val) {
                 if (is_scalar($val)) {
                     $replacements['{'.$key.'}'] = $val;
diff --git a/src/Symfony/Bridge/Twig/Extension/DumpExtension.php b/src/Symfony/Bridge/Twig/Extension/DumpExtension.php
index 3d4c6841f201..88b75368da20 100644
--- a/src/Symfony/Bridge/Twig/Extension/DumpExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/DumpExtension.php
@@ -37,14 +37,14 @@ public function __construct(ClonerInterface $cloner, HtmlDumper $dumper = null)
 
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('dump', array($this, 'dump'), array('is_safe' => array('html'), 'needs_context' => true, 'needs_environment' => true)),
-        );
+        return [
+            new TwigFunction('dump', [$this, 'dump'], ['is_safe' => ['html'], 'needs_context' => true, 'needs_environment' => true]),
+        ];
     }
 
     public function getTokenParsers()
     {
-        return array(new DumpTokenParser());
+        return [new DumpTokenParser()];
     }
 
     public function getName()
@@ -59,14 +59,14 @@ public function dump(Environment $env, $context)
         }
 
         if (2 === \func_num_args()) {
-            $vars = array();
+            $vars = [];
             foreach ($context as $key => $value) {
                 if (!$value instanceof Template) {
                     $vars[$key] = $value;
                 }
             }
 
-            $vars = array($vars);
+            $vars = [$vars];
         } else {
             $vars = \func_get_args();
             unset($vars[0], $vars[1]);
diff --git a/src/Symfony/Bridge/Twig/Extension/ExpressionExtension.php b/src/Symfony/Bridge/Twig/Extension/ExpressionExtension.php
index fc64fa3e3775..21f6be4d6ec6 100644
--- a/src/Symfony/Bridge/Twig/Extension/ExpressionExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/ExpressionExtension.php
@@ -27,9 +27,9 @@ class ExpressionExtension extends AbstractExtension
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('expression', array($this, 'createExpression')),
-        );
+        return [
+            new TwigFunction('expression', [$this, 'createExpression']),
+        ];
     }
 
     public function createExpression($expression)
diff --git a/src/Symfony/Bridge/Twig/Extension/FormExtension.php b/src/Symfony/Bridge/Twig/Extension/FormExtension.php
index 0571fbf1ff0b..7ba3d17cd882 100644
--- a/src/Symfony/Bridge/Twig/Extension/FormExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/FormExtension.php
@@ -65,10 +65,10 @@ public function initRuntime(Environment $environment)
      */
     public function getTokenParsers()
     {
-        return array(
+        return [
             // {% form_theme form "SomeBundle::widgets.twig" %}
             new FormThemeTokenParser(),
-        );
+        ];
     }
 
     /**
@@ -76,17 +76,17 @@ public function getTokenParsers()
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('form_widget', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_errors', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_label', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_row', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_rest', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form', null, array('node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_start', null, array('node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_end', null, array('node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('csrf_token', array('Symfony\Component\Form\FormRenderer', 'renderCsrfToken')),
-        );
+        return [
+            new TwigFunction('form_widget', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_errors', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_label', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html
10000
']]),
+            new TwigFunction('form_row', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_rest', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form', null, ['node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_start', null, ['node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_end', null, ['node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('csrf_token', ['Symfony\Component\Form\FormRenderer', 'renderCsrfToken']),
+        ];
     }
 
     /**
@@ -94,10 +94,10 @@ public function getFunctions()
      */
     public function getFilters()
     {
-        return array(
-            new TwigFilter('humanize', array('Symfony\Component\Form\FormRenderer', 'humanize')),
-            new TwigFilter('form_encode_currency', array('Symfony\Component\Form\FormRenderer', 'encodeCurrency'), array('is_safe' => array('html'), 'needs_environment' => true)),
-        );
+        return [
+            new TwigFilter('humanize', ['Symfony\Component\Form\FormRenderer', 'humanize']),
+            new TwigFilter('form_encode_currency', ['Symfony\Component\Form\FormRenderer', 'encodeCurrency'], ['is_safe' => ['html'], 'needs_environment' => true]),
+        ];
     }
 
     /**
@@ -105,10 +105,10 @@ public function getFilters()
      */
     public function getTests()
     {
-        return array(
+        return [
             new TwigTest('selectedchoice', 'Symfony\Bridge\Twig\Extension\twig_is_selected_choice'),
             new TwigTest('rootform', 'Symfony\Bridge\Twig\Extension\twig_is_root_form'),
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/HttpFoundationExtension.php b/src/Symfony/Bridge/Twig/Extension/HttpFoundationExtension.php
index fe2778393cfd..82b9a92f7516 100644
--- a/src/Symfony/Bridge/Twig/Extension/HttpFoundationExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/HttpFoundationExtension.php
@@ -38,10 +38,10 @@ public function __construct(RequestStack $requestStack, RequestContext $requestC
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('absolute_url', array($this, 'generateAbsoluteUrl')),
-            new TwigFunction('relative_path', array($this, 'generateRelativePath')),
-        );
+        return [
+            new TwigFunction('absolute_url', [$this, 'generateAbsoluteUrl']),
+            new TwigFunction('relative_path', [$this, 'generateRelativePath']),
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/HttpKernelExtension.php b/src/Symfony/Bridge/Twig/Extension/HttpKernelExtension.php
index 45142e7402a6..f8b93ada1547 100644
--- a/src/Symfony/Bridge/Twig/Extension/HttpKernelExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/HttpKernelExtension.php
@@ -24,14 +24,14 @@ class HttpKernelExtension extends AbstractExtension
 {
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('render', array(HttpKernelRuntime::class, 'renderFragment'), array('is_safe' => array('html'))),
-            new TwigFunction('render_*', array(HttpKernelRuntime::class, 'renderFragmentStrategy'), array('is_safe' => array('html'))),
+        return [
+            new TwigFunction('render', [HttpKernelRuntime::class, 'renderFragment'], ['is_safe' => ['html']]),
+            new TwigFunction('render_*', [HttpKernelRuntime::class, 'renderFragmentStrategy'], ['is_safe' => ['html']]),
             new TwigFunction('controller', static::class.'::controller'),
-        );
+        ];
     }
 
-    public static function controller($controller, $attributes = array(), $query = array())
+    public static function controller($controller, $attributes = [], $query = [])
     {
         return new ControllerReference($controller, $attributes, $query);
     }
diff --git a/src/Symfony/Bridge/Twig/Extension/HttpKernelRuntime.php b/src/Symfony/Bridge/Twig/Extension/HttpKernelRuntime.php
index 6eea673e25fa..fcd7c24416fb 100644
--- a/src/Symfony/Bridge/Twig/Extension/HttpKernelRuntime.php
+++ b/src/Symfony/Bridge/Twig/Extension/HttpKernelRuntime.php
@@ -38,7 +38,7 @@ public function __construct(FragmentHandler $handler)
      *
      * @see FragmentHandler::render()
      */
-    public function renderFragment($uri, $options = array())
+    public function renderFragment($uri, $options = [])
     {
         $strategy = isset($options['strategy']) ? $options['strategy'] : 'inline';
         unset($options['strategy']);
@@ -57,7 +57,7 @@ public function renderFragment($uri, $options = array())
      *
      * @see FragmentHandler::render()
      */
-    public function renderFragmentStrategy($strategy, $uri, $options = array())
+    public function renderFragmentStrategy($strategy, $uri, $options = [])
     {
         return $this->handler->render($uri, $strategy, $options);
     }
diff --git a/src/Symfony/Bridge/Twig/Extension/LogoutUrlExtension.php b/src/Symfony/Bridge/Twig/Extension/LogoutUrlExtension.php
index 17abb779899a..e8bc6190cd65 100644
--- a/src/Symfony/Bridge/Twig/Extension/LogoutUrlExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/LogoutUrlExtension.php
@@ -34,10 +34,10 @@ public function __construct(LogoutUrlGenerator $generator)
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('logout_url', array($this, 'getLogoutUrl')),
-            new TwigFunction('logout_path', array($this, 'getLogoutPath')),
-        );
+        return [
+            new TwigFunction('logout_url', [$this, 'getLogoutUrl']),
+            new TwigFunction('logout_path', [$this, 'getLogoutPath']),
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/RoutingExtension.php b/src/Symfony/Bridge/Twig/Extension/RoutingExtension.php
index a23352fd0057..f380d13a5742 100644
--- a/src/Symfony/Bridge/Twig/Extension/RoutingExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/RoutingExtension.php
@@ -39,10 +39,10 @@ public function __construct(UrlGeneratorInterface $generator)
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('url', array($this, 'getUrl'), array('is_safe_callback' => array($this, 'isUrlGenerationSafe'))),
-            new TwigFunction('path', array($this, 'getPath'), array('is_safe_callback' => array($this, 'isUrlGenerationSafe'))),
-        );
+        return [
+            new TwigFunction('url', [$this, 'getUrl'], ['is_safe_callback' => [$this, 'isUrlGenerationSafe']]),
+            new TwigFunction('path', [$this, 'getPath'], ['is_safe_callback' => [$this, 'isUrlGenerationSafe']]),
+        ];
     }
 
     /**
@@ -52,7 +52,7 @@ public function getFunctions()
      *
      * @return string
      */
-    public function getPath($name, $parameters = array(), $relative = false)
+    public function getPath($name, $parameters = [], $relative = false)
     {
         return $this->generator->generate($name, $parameters, $relative ? UrlGeneratorInterface::RELATIVE_PATH : UrlGeneratorInterface::ABSOLUTE_PATH);
     }
@@ -64,7 +64,7 @@ public function getPath($name, $parameters = array(), $relative = false)
      *
      * @return string
      */
-    public function getUrl($name, $parameters = array(), $schemeRelative = false)
+    public function getUrl($name, $parameters = [], $schemeRelative = false)
     {
         return $this->generator->generate($name, $parameters, $schemeRelative ? UrlGeneratorInterface::NETWORK_PATH : UrlGeneratorInterface::ABSOLUTE_URL);
     }
@@ -103,10 +103,10 @@ public function isUrlGenerationSafe(\Twig_Node $argsNode)
         if (null === $paramsNode || $paramsNode instanceof ArrayExpression && \count($paramsNode) <= 2 &&
             (!$paramsNode->hasNode(1) || $paramsNode->getNode(1) instanceof ConstantExpression)
         ) {
-            return array('html');
+            return ['html'];
         }
 
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/SecurityExtension.php b/src/Symfony/Bridge/Twig/Extension/SecurityExtension.php
index 193726a68437..439c31aad3df 100644
--- a/src/Symfony/Bridge/Twig/Extension/SecurityExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/SecurityExtension.php
@@ -53,9 +53,9 @@ public function isGranted($role, $object = null, $field = null)
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('is_granted', array($this, 'isGranted')),
-        );
+        return [
+            new TwigFunction('is_granted', [$this, 'isGranted']),
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/StopwatchExtension.php b/src/Symfony/Bridge/Twig/Extension/StopwatchExtension.php
index ffbfcf8845fe..45b65d4e64d6 100644
--- a/src/Symfony/Bridge/Twig/Extension/StopwatchExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/StopwatchExtension.php
@@ -38,14 +38,14 @@ public function getStopwatch()
 
     public function getTokenParsers()
     {
-        return array(
+        return [
             /*
              * {% stopwatch foo %}
              * Some stuff which will be recorded on the timeline
              * {% endstopwatch %}
              */
             new StopwatchTokenParser(null !== $this->stopwatch && $this->enabled),
-        );
+        ];
     }
 
     public function getName()
diff --git a/src/Symfony/Bridge/Twig/Extension/TranslationExtension.php b/src/Symfony/Bridge/Twig/Extension/TranslationExtension.php
index fe1adc4a7dd0..4538f771981e 100644
--- a/src/Symfony/Bridge/Twig/Extension/TranslationExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/TranslationExtension.php
@@ -48,10 +48,10 @@ public function getTranslator()
      */
     public function getFilters()
     {
-        return array(
-            new TwigFilter('trans', array($this, 'trans')),
-            new TwigFilter('transchoice', array($this, 'transchoice')),
-        );
+        return [
+            new TwigFilter('trans', [$this, 'trans']),
+            new TwigFilter('transchoice', [$this, 'transchoice']),
+        ];
     }
 
     /**
@@ -61,7 +61,7 @@ public function getFilters()
      */
     public function getTokenParsers()
     {
-        return array(
+        return [
             // {% trans %}Symfony is great!{% endtrans %}
             new TransTokenParser(),
 
@@ -72,7 +72,7 @@ public function getTokenParsers()
 
             // {% trans_default_domain "foobar" %}
             new TransDefaultDomainTokenParser(),
-        );
+        ];
     }
 
     /**
@@ -80,7 +80,7 @@ public function getTokenParsers()
      */
     public function getNodeVisitors()
     {
-        return array($this->getTranslationNodeVisitor(), new TranslationDefaultDomainNodeVisitor());
+        return [$this->getTranslationNodeVisitor(), new TranslationDefaultDomainNodeVisitor()];
     }
 
     public function getTranslationNodeVisitor()
@@ -88,7 +88,7 @@ public function getTranslationNodeVisitor()
         return $this->translationNodeVisitor ?: $this->translationNodeVisitor = new TranslationNodeVisitor();
     }
 
-    public function trans($message, array $arguments = array(), $domain = null, $locale = null)
+    public function trans($message, array $arguments = [], $domain = null, $locale = null)
     {
         if (null === $this->translator) {
             return strtr($message, $arguments);
@@ -97,13 +97,13 @@ public function trans($message, array $arguments = array(), $domain = null, $loc
         return $this->translator->trans($message, $arguments, $domain, $locale);
     }
 
-    public function transchoice($message, $count, array $arguments = array(), $domain = null, $locale = null)
+    public function transchoice($message, $count, array $arguments = [], $domain = null, $locale = null)
     {
         if (null === $this->translator) {
             return strtr($message, $arguments);
         }
 
-        return $this->translator->transChoice($message, $count, array_merge(array('%count%' => $count), $arguments), $domain, $locale);
+        return $this->translator->transChoice($message, $count, array_merge(['%count%' => $count], $arguments), $domain, $locale);
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/WebLinkExtension.php b/src/Symfony/Bridge/Twig/Extension/WebLinkExtension.php
index 3d90c3bf21c7..cf00b4c53af2 100644
--- a/src/Symfony/Bridge/Twig/Extension/WebLinkExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/WebLinkExtension.php
@@ -36,14 +36,14 @@ public function __construct(RequestStack $requestStack)
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('link', array($this, 'link')),
-            new TwigFunction('preload', array($this, 'preload')),
-            new TwigFunction('dns_prefetch', array($this, 'dnsPrefetch')),
-            new TwigFunction('preconnect', array($this, 'preconnect')),
-            new TwigFunction('prefetch', array($this, 'prefetch')),
-            new TwigFunction('prerender', array($this, 'prerender')),
-        );
+        return [
+            new TwigFunction('link', [$this, 'link']),
+            new TwigFunction('preload', [$this, 'preload']),
+            new TwigFunction('dns_prefetch', [$this, 'dnsPrefetch']),
+            new TwigFunction('preconnect', [$this, 'preconnect']),
+            new TwigFunction('prefetch', [$this, 'prefetch']),
+            new TwigFunction('prerender', [$this, 'prerender']),
+        ];
     }
 
     /**
@@ -55,7 +55,7 @@ public function getFunctions()
      *
      * @return string The relation URI
      */
-    public function link($uri, $rel, array $attributes = array())
+    public function link($uri, $rel, array $attributes = [])
     {
         if (!$request = $this->requestStack->getMasterRequest()) {
             return $uri;
@@ -80,7 +80,7 @@ public function link($uri, $rel, array $attributes = array())
      *
      * @return string The path of the asset
      */
-    public function preload($uri, array $attributes = array())
+    public function preload($uri, array $attributes = [])
     {
         return $this->link($uri, 'preload', $attributes);
     }
@@ -93,7 +93,7 @@ public function preload($uri, array $attributes = array())
      *
      * @return string The path of the asset
      */
-    public function dnsPrefetch($uri, array $attributes = array())
+    public function dnsPrefetch($uri, array $attributes = [])
     {
         return $this->link($uri, 'dns-prefetch', $attributes);
     }
@@ -106,7 +106,7 @@ public function dnsPrefetch($uri, array $attributes = array())
      *
      * @return string The path of the asset
      */
-    public function preconnect($uri, array $attributes = array())
+    public function preconnect($uri, array $attributes = [])
     {
         return $this->link($uri, 'preconnect', $attributes);
     }
@@ -119,7 +119,7 @@ public function preconnect($uri, array $attributes = array())
      *
      * @return string The path of the asset
      */
-    public function prefetch($uri, array $attributes = array())
+    public function prefetch($uri, array $attributes = [])
     {
         return $this->link($uri, 'prefetch', $attributes);
     }
@@ -132,7 +132,7 @@ public function prefetch($uri, array $attributes = array())
      *
      * @return string The path of the asset
      */
-    public function prerender($uri, array $attributes = array())
+    public function prerender($uri, array $attributes = [])
     {
         return $this->link($uri, 'prerender', $attributes);
     }
diff --git a/src/Symfony/Bridge/Twig/Extension/WorkflowExtension.php b/src/Symfony/Bridge/Twig/Extension/WorkflowExtension.php
index 54c12f16d4cb..6ff5fad9c031 100644
--- a/src/Symfony/Bridge/Twig/Extension/WorkflowExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/WorkflowExtension.php
@@ -32,12 +32,12 @@ public function __construct(Registry $workflowRegistry)
 
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('workflow_can', array($this, 'canTransition')),
-            new TwigFunction('workflow_transitions', array($this, 'getEnabledTransitions')),
-            new TwigFunction('workflow_has_marked_place', array($this, 'hasMarkedPlace')),
-            new TwigFunction('workflow_marked_places', array($this, 'getMarkedPlaces')),
-        );
+        return [
+            new TwigFunction('workflow_can', [$this, 'canTransition']),
+            new TwigFunction('workflow_transitions', [$this, 'getEnabledTransitions']),
+            new TwigFunction('workflow_has_marked_place', [$this, 'hasMarkedPlace']),
+            new TwigFunction('workflow_marked_places', [$this, 'getMarkedPlaces']),
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/YamlExtension.php b/src/Symfony/Bridge/Twig/Extension/YamlExtension.php
index a94c07426ef5..bb8d5a12bd62 100644
--- a/src/Symfony/Bridge/Twig/Extension/YamlExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/YamlExtension.php
@@ -28,10 +28,10 @@ class YamlExtension extends AbstractExtension
      */
     public function getFilters()
     {
-        return array(
-            new TwigFilter('yaml_encode', array($this, 'encode')),
-            new TwigFilter('yaml_dump', array($this, 'dump')),
-        );
+        return [
+            new TwigFilter('yaml_encode', [$this, 'encode']),
+            new TwigFilter('yaml_dump', [$this, 'dump']),
+        ];
     }
 
     public function encode($input, $inline = 0, $dumpObjects = 0)
diff --git a/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php b/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
index eb4cc1ce8046..73e7bc4c887e 100644
--- a/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
+++ b/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
@@ -31,7 +31,7 @@ class TwigRendererEngine extends AbstractRendererEngine implements TwigRendererE
      */
     private $template;
 
-    public function __construct(array $defaultThemes = array(), Environment $environment = null)
+    public function __construct(array $defaultThemes = [], Environment $environment = null)
     {
         if (null === $environment) {
             @trigger_error(sprintf('Not passing a Twig Environment as the second argument for "%s" constructor is deprecated since Symfony 3.2 and won\'t be possible in 4.0.', static::class), E_USER_DEPRECATED);
@@ -58,7 +58,7 @@ public function setEnvironment(Environment $environment)
     /**
      * {@inheritdoc}
      */
-    public function renderBlock(FormView $view, $resource, $blockName, array $variables = array())
+    public function renderBlock(FormView $view, $resource, $blockName, array $variables = [])
     {
         $cacheKey = $view->vars[self::CACHE_KEY_VAR];
 
@@ -187,7 +187,7 @@ protected function loadResourcesFromTheme($cacheKey, &$theme)
         // theme is a reference and we don't want to change it.
         $currentTheme = $theme;
 
-        $context = $this->environment->mergeGlobals(array());
+        $context = $this->environment->mergeGlobals([]);
 
         // The do loop takes care of template inheritance.
         // Add blocks from all templates in the inheritance tree, but avoid
diff --git a/src/Symfony/Bridge/Twig/Node/DumpNode.php b/src/Symfony/Bridge/Twig/Node/DumpNode.php
index b4f1772bdeaa..387f826434f2 100644
--- a/src/Symfony/Bridge/Twig/Node/DumpNode.php
+++ b/src/Symfony/Bridge/Twig/Node/DumpNode.php
@@ -23,12 +23,12 @@ class DumpNode extends Node
 
     public function __construct($varPrefix, Node $values = null, $lineno, $tag = null)
     {
-        $nodes = array();
+        $nodes = [];
         if (null !== $values) {
             $nodes['values'] = $values;
         }
 
-        parent::__construct($nodes, array(), $lineno, $tag);
+        parent::__construct($nodes, [], $lineno, $tag);
         $this->varPrefix = $varPrefix;
     }
 
diff --git a/src/Symfony/Bridge/Twig/Node/FormThemeNode.php b/src/Symfony/Bridge/Twig/Node/FormThemeNode.php
index 8fcd9380a620..2ab4c35a3fb1 100644
--- a/src/Symfony/Bridge/Twig/Node/FormThemeNode.php
+++ b/src/Symfony/Bridge/Twig/Node/FormThemeNode.php
@@ -24,7 +24,7 @@ class FormThemeNode extends Node
 {
     public function __construct(Node $form, Node $resources, $lineno, $tag = null, $only = false)
     {
-        parent::__construct(array('form' => $form, 'resources' => $resources), array('only' => (bool) $only), $lineno, $tag);
+        parent::__construct(['form' => $form, 'resources' => $resources], ['only' => (bool) $only], $lineno, $tag);
     }
 
     public function compile(Compiler $compiler)
diff --git a/src/Symfony/Bridge/Twig/Node/SearchAndRenderBlockNode.php b/src/Symfony/Bridge/Twig/Node/SearchAndRenderBlockNode.php
index 09262b8ca8ee..612bec14e532 100644
--- a/src/Symfony/Bridge/Twig/Node/SearchAndRenderBlockNode.php
+++ b/src/Symfony/Bridge/Twig/Node/SearchAndRenderBlockNode.php
@@ -53,7 +53,7 @@ public function compile(Compiler $compiler)
                         // Only insert the label into the array if it is not empty
                         if (!twig_test_empty($label->getAttribute('value'))) {
                             $originalVariables = $variables;
-                            $variables = new ArrayExpression(array(), $lineno);
+                            $variables = new ArrayExpression([], $lineno);
                             $labelKey = new ConstantExpression('label', $lineno);
 
                             if (null !== $originalVariables) {
diff --git a/src/Symfony/Bridge/Twig/Node/StopwatchNode.php b/src/Symfony/Bridge/Twig/Node/StopwatchNode.php
index fac770c2499b..538c22bb7923 100644
--- a/src/Symfony/Bridge/Twig/Node/StopwatchNode.php
+++ b/src/Symfony/Bridge/Twig/Node/StopwatchNode.php
@@ -24,7 +24,7 @@ class StopwatchNode extends Node
 {
     public function __construct(Node $name, Node $body, AssignNameExpression $var, $lineno = 0, $tag = null)
     {
-        parent::__construct(array('body' => $body, 'name' => $name, 'var' => $var), array(), $lineno, $tag);
+        parent::__construct(['body' => $body, 'name' => $name, 'var' => $var], [], $lineno, $tag);
     }
 
     public function compile(Compiler $compiler)
diff --git a/src/Symfony/Bridge/Twig/Node/TransDefaultDomainNode.php b/src/Symfony/Bridge/Twig/Node/TransDefaultDomainNode.php
index c9c82b33e541..294718ba1f1f 100644
--- a/src/Symfony/Bridge/Twig/Node/TransDefaultDomainNode.php
+++ b/src/Symfony/Bridge/Twig/Node/TransDefaultDomainNode.php
@@ -22,7 +22,7 @@ class TransDefaultDomainNode extends Node
 {
     public function __construct(AbstractExpression $expr, $lineno = 0, $tag = null)
     {
-        parent::__construct(array('expr' => $expr), array(), $lineno, $tag);
+        parent::__construct(['expr' => $expr], [], $lineno, $tag);
     }
 
     public function compile(Compiler $compiler)
diff --git a/src/Symfony/Bridge/Twig/Node/TransNode.php b/src/Symfony/Bridge/Twig/Node/TransNode.php
index 020810f7b7c5..1b02b9c3d7da 100644
--- a/src/Symfony/Bridge/Twig/Node/TransNode.php
+++ b/src/Symfony/Bridge/Twig/Node/TransNode.php
@@ -29,7 +29,7 @@ class TransNode extends Node
 {
     public function __construct(Node $body, Node $domain = null, AbstractExpression $count = null, AbstractExpression $vars = null, AbstractExpression $locale = null, $lineno = 0, $tag = null)
     {
-        $nodes = array('body' => $body);
+        $nodes = ['body' => $body];
         if (null !== $domain) {
             $nodes['domain'] = $domain;
         }
@@ -43,14 +43,14 @@ public function __construct(Node $body, Node $domain = null, AbstractExpression
             $nodes['locale'] = $locale;
         }
 
-        parent::__construct($nodes, array(), $lineno, $tag);
+        parent::__construct($nodes, [], $lineno, $tag);
     }
 
     public function compile(Compiler $compiler)
     {
         $compiler->addDebugInfo($this);
 
-        $defaults = new ArrayExpression(array(), -1);
+        $defaults = new ArrayExpression([], -1);
         if ($this->hasNode('vars') && ($vars = $this->getNode('vars')) instanceof ArrayExpression) {
             $defaults = $this->getNode('vars');
             $vars = null;
@@ -109,7 +109,7 @@ protected function compileString(Node $body, ArrayExpression $vars, $ignoreStric
         } elseif ($body instanceof TextNode) {
             $msg = $body->getAttribute('data');
         } else {
-            return array($body, $vars);
+            return [$body, $vars];
         }
 
         preg_match_all('/(?<!%)%([^%]+)%/', $msg, $matches);
@@ -127,6 +127,6 @@ protected function compileString(Node $body, ArrayExpression $vars, $ignoreStric
             }
         }
 
-        return array(new ConstantExpression(str_replace('%%', '%', trim($msg)), $body->getTemplateLine()), $vars);
+        return [new ConstantExpression(str_replace('%%', '%', trim($msg)), $body->getTemplateLine()), $vars];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/NodeVisitor/Scope.php b/src/Symfony/Bridge/Twig/NodeVisitor/Scope.php
index 59497dc96198..d5bcfa8b8fce 100644
--- a/src/Symfony/Bridge/Twig/NodeVisitor/Scope.php
+++ b/src/Symfony/Bridge/Twig/NodeVisitor/Scope.php
@@ -17,7 +17,7 @@
 class Scope
 {
     private $parent;
-    private $data = array();
+    private $data = [];
     private $left = false;
 
     public function __construct(self $parent = null)
diff --git a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
index 6a34a037e48f..5beae16dba3f 100644
--- a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
+++ b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php
@@ -56,7 +56,7 @@ protected function doEnterNode(Node $node, Environment $env)
                 $name = new AssignNameExpression($var, $node->getTemplateLine());
                 $this->scope->set('domain', new NameExpression($var, $node->getTemplateLine()));
 
-                return new SetNode(false, new Node(array($name)), new Node(array($node->getNode('expr'))), $node->getTemplateLine());
+                return new SetNode(false, new Node([$name]), new Node([$node->getNode('expr')]), $node->getTemplateLine());
             }
         }
 
@@ -64,7 +64,7 @@ protected function doEnterNode(Node $node, Environment $env)
             return $node;
         }
 
-        if ($node instanceof FilterExpression && \in_array($node->getNode('filter')->getAttribute('value'), array('trans', 'transchoice'))) {
+        if ($node instanceof FilterExpression && \in_array($node->getNode('filter')->getAttribute('value'), ['trans', 'transchoice'])) {
             $arguments = $node->getNode('arguments');
             $ind = 'trans' === $node->getNode('filter')->getAttribute('value') ? 1 : 2;
             if ($this->isNamedArguments($arguments)) {
@@ -74,7 +74,7 @@ protected function doEnterNode(Node $node, Environment $env)
             } else {
                 if (!$arguments->hasNode($ind)) {
                     if (!$arguments->hasNode($ind - 1)) {
-                        $arguments->setNode($ind - 1, new ArrayExpression(array(), $node->getTemplateLine()));
+                        $arguments->setNode($ind - 1, new ArrayExpression([], $node->getTemplateLine()));
                     }
 
                     $arguments->setNode($ind, $this->scope->get('domain'));
diff --git a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
index 1fbce9c6af81..2585b4823db5 100644
--- a/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
+++ b/src/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php
@@ -28,18 +28,18 @@ class TranslationNodeVisitor extends AbstractNodeVisitor
     const UNDEFINED_DOMAIN = '_undefined';
 
     private $enabled = false;
-    private $messages = array();
+    private $messages = [];
 
     public function enable()
     {
         $this->enabled = true;
-        $this->messages = array();
+        $this->messages = [];
     }
 
     public function disable()
     {
         $this->enabled = false;
-        $this->messages = array();
+        $this->messages = [];
     }
 
     public function getMessages()
@@ -62,26 +62,26 @@ protected function doEnterNode(Node $node, Environment $env)
             $node->getNode('node') instanceof ConstantExpression
         ) {
             // extract constant nodes with a trans filter
-            $this->messages[] = array(
+            $this->messages[] = [
                 $node->getNode('node')->getAttribute('value'),
                 $this->getReadDomainFromArguments($node->getNode('arguments'), 1),
-            );
+            ];
         } elseif (
             $node instanceof FilterExpression &&
             'transchoice' === $node->getNode('filter')->getAttribute('value') &&
             $node->getNode('node') instanceof ConstantExpression
         ) {
             // extract constant nodes with a trans filter
-            $this->messages[] = array(
+            $this->messages[] = [
                 $node->getNode('node')->getAttribute('value'),
                 $this->getReadDomainFromArguments($node->getNode('arguments'), 2),
-            );
+            ];
         } elseif ($node instanceof TransNode) {
             // extract trans nodes
-            $this->messages[] = array(
+            $this->messages[] = [
                 $node->getNode('body')->getAttribute('data'),
                 $node->hasNode('domain') ? $this->getReadDomainFromNode($node->getNode('domain')) : null,
-            );
+            ];
         }
 
         return $node;
diff --git a/src/Symfony/Bridge/Twig/Tests/AppVariableTest.php b/src/Symfony/Bridge/Twig/Tests/AppVariableTest.php
index 27eca0c44a74..0502a64ce1da 100644
--- a/src/Symfony/Bridge/Twig/Tests/AppVariableTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/AppVariableTest.php
@@ -32,10 +32,10 @@ public function testDebug($debugFlag)
 
     public function debugDataProvider()
     {
-        return array(
-            'debug on' => array(true),
-            'debug off' => array(false),
-        );
+        return [
+            'debug on' => [true],
+            'debug off' => [false],
+        ];
     }
 
     public function testEnvironment()
@@ -166,7 +166,7 @@ public function testGetFlashesWithNoRequest()
     {
         $this->setRequestStack(null);
 
-        $this->assertEquals(array(), $this->appVariable->getFlashes());
+        $this->assertEquals([], $this->appVariable->getFlashes());
     }
 
     /**
@@ -190,15 +190,15 @@ public function testGetFlashes()
         $this->assertEquals($flashMessages, $this->appVariable->getFlashes(''));
 
         $flashMessages = $this->setFlashMessages();
-        $this->assertEquals($flashMessages, $this->appVariable->getFlashes(array()));
+        $this->assertEquals($flashMessages, $this->appVariable->getFlashes([]));
 
         $flashMessages = $this->setFlashMessages();
-        $this->assertEquals(array(), $this->appVariable->getFlashes('this-does-not-exist'));
+        $this->assertEquals([], $this->appVariable->getFlashes('this-does-not-exist'));
 
         $flashMessages = $this->setFlashMessages();
         $this->assertEquals(
-            array('this-does-not-exist' => array()),
-            $this->appVariable->getFlashes(array('this-does-not-exist'))
+            ['this-does-not-exist' => []],
+            $this->appVariable->getFlashes(['this-does-not-exist'])
         );
 
         $flashMessages = $this->setFlashMessages();
@@ -206,31 +206,31 @@ public function testGetFlashes()
 
         $flashMessages = $this->setFlashMessages();
         $this->assertEquals(
-            array('notice' => $flashMessages['notice']),
-            $this->appVariable->getFlashes(array('notice'))
+            ['notice' => $flashMessages['notice']],
+            $this->appVariable->getFlashes(['notice'])
         );
 
         $flashMessages = $this->setFlashMessages();
         $this->assertEquals(
-            array('notice' => $flashMessages['notice'], 'this-does-not-exist' => array()),
-            $this->appVariable->getFlashes(array('notice', 'this-does-not-exist'))
+            ['notice' => $flashMessages['notice'], 'this-does-not-exist' => []],
+            $this->appVariable->getFlashes(['notice', 'this-does-not-exist'])
         );
 
         $flashMessages = $this->setFlashMessages();
         $this->assertEquals(
-            array('notice' => $flashMessages['notice'], 'error' => $flashMessages['error']),
-            $this->appVariable->getFlashes(array('notice', 'error'))
+            ['notice' => $flashMessages['notice'], 'error' => $flashMessages['error']],
+            $this->appVariable->getFlashes(['notice', 'error'])
         );
 
         $this->assertEquals(
-            array('warning' => $flashMessages['warning']),
-            $this->appVariable->getFlashes(array('warning')),
+            ['warning' => $flashMessages['warning']],
+            $this->appVariable->getFlashes(['warning']),
             'After getting some flash types (e.g. "notice" and "error"), the rest of flash messages must remain (e.g. "warning").'
         );
 
         $this->assertEquals(
-            array('this-does-not-exist' => array()),
-            $this->appVariable->getFlashes(array('this-does-not-exist'))
+            ['this-does-not-exist' => []],
+            $this->appVariable->getFlashes(['this-does-not-exist'])
         );
     }
 
@@ -255,11 +255,11 @@ protected function setTokenStorage($user)
 
     private function setFlashMessages($sessionHasStarted = true)
     {
-        $flashMessages = array(
-            'notice' => array('Notice #1 message'),
-            'warning' => array('Warning #1 message'),
-            'error' => array('Error #1 message', 'Error #2 message'),
-        );
+        $flashMessages = [
+            'notice' => ['Notice #1 message'],
+            'warning' => ['Warning #1 message'],
+            'error' => ['Error #1 message', 'Error #2 message'],
+        ];
         $flashBag = new FlashBag();
         $flashBag->initialize($flashMessages);
 
diff --git a/src/Symfony/Bridge/Twig/Tests/Command/DebugCommandTest.php b/src/Symfony/Bridge/Twig/Tests/Command/DebugCommandTest.php
index 39b0d0df5a2b..a3569b5602d7 100644
--- a/src/Symfony/Bridge/Twig/Tests/Command/DebugCommandTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Command/DebugCommandTest.php
@@ -23,7 +23,7 @@ class DebugCommandTest extends TestCase
     public function testDebugCommand()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array(), array('decorated' => false));
+        $ret = $tester->execute([], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Functions', trim($tester->getDisplay()));
@@ -33,12 +33,12 @@ public function testLineSeparatorInLoaderPaths()
     {
         // these paths aren't realistic,
         // they're configured to force the line separator
-        $tester = $this->createCommandTester(array(
-            'Acme' => array('extractor', 'extractor'),
-            '!Acme' => array('extractor', 'extractor'),
-            FilesystemLoader::MAIN_NAMESPACE => array('extractor', 'extractor'),
-        ));
-        $ret = $tester->execute(array(), array('decorated' => false));
+        $tester = $this->createCommandTester([
+            'Acme' => ['extractor', 'extractor'],
+            '!Acme' => ['extractor', 'extractor'],
+            FilesystemLoader::MAIN_NAMESPACE => ['extractor', 'extractor'],
+        ]);
+        $ret = $tester->execute([], ['decorated' => false]);
         $ds = \DIRECTORY_SEPARATOR;
         $loaderPaths = <<<TXT
 Loader Paths
@@ -62,9 +62,9 @@ public function testLineSeparatorInLoaderPaths()
         $this->assertContains($loaderPaths, trim($tester->getDisplay(true)));
     }
 
-    private function createCommandTester(array $paths = array())
+    private function createCommandTester(array $paths = [])
     {
-        $filesystemLoader = new FilesystemLoader(array(), \dirname(__DIR__).'/Fixtures');
+        $filesystemLoader = new FilesystemLoader([], \dirname(__DIR__).'/Fixtures');
         foreach ($paths as $namespace => $relDirs) {
             foreach ($relDirs as $relDir) {
                 $filesystemLoader->addPath($relDir, $namespace);
diff --git a/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php b/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
index bf0bf7c42cbc..e50a555e7f43 100644
--- a/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
@@ -28,7 +28,7 @@ public function testLintCorrectFile()
         $tester = $this->createCommandTester();
         $filename = $this->createFile('{{ foo }}');
 
-        $ret = $tester->execute(array('filename' => array($filename)), array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename]], ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('OK in', trim($tester->getDisplay()));
@@ -39,7 +39,7 @@ public function testLintIncorrectFile()
         $tester = $this->createCommandTester();
         $filename = $this->createFile('{{ foo');
 
-        $ret = $tester->execute(array('filename' => array($filename)), array('decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename]], ['decorated' => false]);
 
         $this->assertEquals(1, $ret, 'Returns 1 in case of error');
         $this->assertRegExp('/ERROR  in \S+ \(line /', trim($tester->getDisplay()));
@@ -54,7 +54,7 @@ public function testLintFileNotReadable()
         $filename = $this->createFile('');
         unlink($filename);
 
-        $ret = $tester->execute(array('filename' => array($filename)), array('decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename]], ['decorated' => false]);
     }
 
     public function testLintFileCompileTimeException()
@@ -62,7 +62,7 @@ public function testLintFileCompileTimeException()
         $tester = $this->createCommandTester();
         $filename = $this->createFile("{{ 2|number_format(2, decimal_point='.', ',') }}");
 
-        $ret = $tester->execute(array('filename' => array($filename)), array('decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename]], ['decorated' => false]);
 
         $this->assertEquals(1, $ret, 'Returns 1 in case of error');
         $this->assertRegExp('/ERROR  in \S+ \(line /', trim($tester->getDisplay()));
@@ -83,7 +83,7 @@ public function testLegacyLintCommand()
         $command = $application->find('lint:twig');
 
         $tester = new CommandTester($command);
-        $tester->execute(array());
+        $tester->execute([]);
     }
 
     /**
@@ -115,7 +115,7 @@ private function createFile($content)
 
     protected function setUp()
     {
-        $this->files = array();
+        $this->files = [];
     }
 
     protected function tearDown()
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3HorizontalLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3HorizontalLayoutTest.php
index 97311b38a93f..9131216182a3 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3HorizontalLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3HorizontalLayoutTest.php
@@ -17,7 +17,7 @@ public function testLabelOnForm()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType');
         $view = $form->createView();
-        $this->renderWidget($view, array('label' => 'foo'));
+        $this->renderWidget($view, ['label' => 'foo']);
         $html = $this->renderLabel($view);
 
         $this->assertMatchesXpath($html,
@@ -31,11 +31,11 @@ public function testLabelOnForm()
     public function testLabelDoesNotRenderFieldAttributes()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), null, array(
-            'attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -48,11 +48,11 @@ public function testLabelDoesNotRenderFieldAttributes()
     public function testLabelWithCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -65,11 +65,11 @@ public function testLabelWithCustomAttributesPassedDirectly()
     public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), 'Custom label', array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), 'Custom label', [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -82,14 +82,14 @@ public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
 
     public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'label' => 'Custom label',
-        ));
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        ]);
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -102,10 +102,10 @@ public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly
 
     public function testStartTag()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -114,25 +114,25 @@ public function testStartTag()
 
     public function testStartTagWithOverriddenVars()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'put',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
-        $html = $this->renderStart($form->createView(), array(
+        $html = $this->renderStart($form->createView(), [
             'method' => 'post',
             'action' => 'http://foo.com/directory',
-        ));
+        ]);
 
         $this->assertSame('<form name="form" method="post" action="http://foo.com/directory" class="form-horizontal">', $html);
     }
 
     public function testStartTagForMultipartForm()
     {
-        $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'method' => 'get',
                 'action' => 'http://example.com/directory',
-            ))
+            ])
             ->add('file', 'Symfony\Component\Form\Extension\Core\Type\FileType')
             ->getForm();
 
@@ -143,14 +143,14 @@ public function testStartTagForMultipartForm()
 
     public function testStartTagWithExtraAttributes()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
-        $html = $this->renderStart($form->createView(), array(
-            'attr' => array('class' => 'foobar'),
-        ));
+        $html = $this->renderStart($form->createView(), [
+            'attr' => ['class' => 'foobar'],
+        ]);
 
         $this->assertSame('<form name="form" method="get" action="http://example.com/directory" class="foobar form-horizontal">', $html);
     }
@@ -159,7 +159,7 @@ public function testCheckboxRow()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType');
         $view = $form->createView();
-        $html = $this->renderRow($view, array('label' => 'foo'));
+        $html = $this->renderRow($view, ['label' => 'foo']);
 
         $this->assertMatchesXpath($html, '/div[@class="form-group"]/div[@class="col-sm-2" or @class="col-sm-10"]', 2);
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
index 965295bfa75c..ae62a40f604f 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
@@ -20,7 +20,7 @@ public function testLabelOnForm()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType');
         $view = $form->createView();
-        $this->renderWidget($view, array('label' => 'foo'));
+        $this->renderWidget($view, ['label' => 'foo']);
         $html = $this->renderLabel($view);
 
         $this->assertMatchesXpath($html,
@@ -34,11 +34,11 @@ public function testLabelOnForm()
     public function testLabelDoesNotRenderFieldAttributes()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), null, array(
-            'attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -51,11 +51,11 @@ public function testLabelDoesNotRenderFieldAttributes()
     public function testLabelWithCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -68,11 +68,11 @@ public function testLabelWithCustomAttributesPassedDirectly()
     public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), 'Custom label', array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), 'Custom label', [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -85,14 +85,14 @@ public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
 
     public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'label' => 'Custom label',
-        ));
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        ]);
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -158,7 +158,7 @@ public function testCheckedCheckbox()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType', true);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="checkbox"]
     [
@@ -176,7 +176,7 @@ public function testUncheckedCheckbox()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType', false);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="checkbox"]
     [
@@ -192,11 +192,11 @@ public function testUncheckedCheckbox()
 
     public function testCheckboxWithValue()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType', false, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType', false, [
             'value' => 'foo&bar',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="checkbox"]
     [
@@ -212,13 +212,13 @@ public function testCheckboxWithValue()
 
     public function testSingleChoice()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -234,14 +234,14 @@ public function testSingleChoice()
 
     public function testSingleChoiceAttributesWithMainAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
-            'attr' => array('class' => 'bar&baz'),
-        ));
+            'attr' => ['class' => 'bar&baz'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'bar&baz')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'bar&baz']],
 '/select
     [@name="name"]
     [@class="bar&baz form-control"]
@@ -257,14 +257,14 @@ public function testSingleChoiceAttributesWithMainAttributes()
 
     public function testSingleExpandedChoiceAttributesWithMainAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
-            'attr' => array('class' => 'bar&baz'),
-        ));
+            'attr' => ['class' => 'bar&baz'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'bar&baz')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'bar&baz']],
 '/div
     [@class="bar&baz"]
     [
@@ -294,14 +294,14 @@ public function testSingleExpandedChoiceAttributesWithMainAttributes()
 
     public function testSelectWithSizeBiggerThanOneCanBeRequired()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, array(
-            'choices' => array('a', 'b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, [
+            'choices' => ['a', 'b'],
             'multiple' => false,
             'expanded' => false,
-            'attr' => array('size' => 2),
-        ));
+            'attr' => ['size' => 2],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => '')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => '']],
 '/select
     [@name="name"]
     [@required="required"]
@@ -313,14 +313,14 @@ public function testSelectWithSizeBiggerThanOneCanBeRequired()
 
     public function testSingleChoiceWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -336,16 +336,16 @@ public function testSingleChoiceWithoutTranslation()
 
     public function testSingleChoiceWithPlaceholderWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
             'required' => false,
             'translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -362,14 +362,14 @@ public function testSingleChoiceWithPlaceholderWithoutTranslation()
 
     public function testSingleChoiceAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -385,14 +385,14 @@ public function testSingleChoiceAttributes()
 
     public function testSingleChoiceWithPreferred()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'preferred_choices' => array('&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'preferred_choices' => ['&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('separator' => '-- sep --', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['separator' => '-- sep --', 'attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -409,14 +409,14 @@ public function testSingleChoiceWithPreferred()
 
     public function testSingleChoiceWithPreferredAndNoSeparator()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'preferred_choices' => array('&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'preferred_choices' => ['&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('separator' => null, 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['separator' => null, 'attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -432,14 +432,14 @@ public function testSingleChoiceWithPreferredAndNoSeparator()
 
     public function testSingleChoiceWithPreferredAndBlankSeparator()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'preferred_choices' => array('&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'preferred_choices' => ['&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('separator' => '', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['separator' => '', 'attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -456,14 +456,14 @@ public function testSingleChoiceWithPreferredAndBlankSeparator()
 
     public function testChoiceWithOnlyPreferred()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'preferred_choices' => array('&a', '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'preferred_choices' => ['&a', '&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@class="my&class form-control"]
     [count(./option)=2]
@@ -473,14 +473,14 @@ public function testChoiceWithOnlyPreferred()
 
     public function testSingleChoiceNonRequired()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => false,
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -497,14 +497,14 @@ public function testSingleChoiceNonRequired()
 
     public function testSingleChoiceNonRequiredNoneSelected()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => false,
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -521,15 +521,15 @@ public function testSingleChoiceNonRequiredNoneSelected()
 
     public function testSingleChoiceNonRequiredWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
             'required' => false,
             'placeholder' => 'Select&Anything&Not&Me',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -546,15 +546,15 @@ public function testSingleChoiceNonRequiredWithPlaceholder()
 
     public function testSingleChoiceRequiredWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\F
8000
orm\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => true,
             'multiple' => false,
             'expanded' => false,
             'placeholder' => 'Test&Me',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -571,14 +571,14 @@ public function testSingleChoiceRequiredWithPlaceholder()
 
     public function testSingleChoiceRequiredWithPlaceholderViaView()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => true,
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('placeholder' => '', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['placeholder' => '', 'attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -595,16 +595,16 @@ public function testSingleChoiceRequiredWithPlaceholderViaView()
 
     public function testSingleChoiceGrouped()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array(
-                'Group&1' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-                'Group&2' => array('Choice&C' => '&c'),
-            ),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => [
+                'Group&1' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+                'Group&2' => ['Choice&C' => '&c'],
+            ],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -626,14 +626,14 @@ public function testSingleChoiceGrouped()
 
     public function testMultipleChoice()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => true,
             'multiple' => true,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name[]"]
     [@class="my&class form-control"]
@@ -650,15 +650,15 @@ public function testMultipleChoice()
 
     public function testMultipleChoiceAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'required' => true,
             'multiple' => true,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name[]"]
     [@class="my&class form-control"]
@@ -675,14 +675,14 @@ public function testMultipleChoiceAttributes()
 
     public function testMultipleChoiceSkipsPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => true,
             'expanded' => false,
             'placeholder' => 'Test&Me',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name[]"]
     [@class="my&class form-control"]
@@ -698,14 +698,14 @@ public function testMultipleChoiceSkipsPlaceholder()
 
     public function testMultipleChoiceNonRequired()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => false,
             'multiple' => true,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name[]"]
     [@class="my&class form-control"]
@@ -721,13 +721,13 @@ public function testMultipleChoiceNonRequired()
 
     public function testSingleChoiceExpanded()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -756,14 +756,14 @@ public function testSingleChoiceExpanded()
 
     public function testSingleChoiceExpandedWithLabelsAsFalse()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => false,
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -790,8 +790,8 @@ public function testSingleChoiceExpandedWithLabelsAsFalse()
 
     public function testSingleChoiceExpandedWithLabelsSetByCallable()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'choice_label' => function ($choice, $label, $value) {
                 if ('&b' === $choice) {
                     return false;
@@ -801,9 +801,9 @@ public function testSingleChoiceExpandedWithLabelsSetByCallable()
             },
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -840,16 +840,16 @@ public function testSingleChoiceExpandedWithLabelsSetByCallable()
 
     public function testSingleChoiceExpandedWithLabelsSetFalseByCallable()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => function () {
                 return false;
             },
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -876,14 +876,14 @@ public function testSingleChoiceExpandedWithLabelsSetFalseByCallable()
 
     public function testSingleChoiceExpandedWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -912,14 +912,14 @@ public function testSingleChoiceExpandedWithoutTranslation()
 
     public function testSingleChoiceExpandedAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -948,15 +948,15 @@ public function testSingleChoiceExpandedAttributes()
 
     public function testSingleChoiceExpandedWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'placeholder' => 'Test&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -994,16 +994,16 @@ public function testSingleChoiceExpandedWithPlaceholder()
 
     public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choice_translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1041,13 +1041,13 @@ public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
 
     public function testSingleChoiceExpandedWithBooleanValue()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', true, array(
-            'choices' => array('Choice&A' => '1', 'Choice&B' => '0'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', true, [
+            'choices' => ['Choice&A' => '1', 'Choice&B' => '0'],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1076,14 +1076,14 @@ public function testSingleChoiceExpandedWithBooleanValue()
 
     public function testMultipleChoiceExpanded()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1121,14 +1121,14 @@ public function testMultipleChoiceExpanded()
 
     public function testMultipleChoiceExpandedWithLabelsAsFalse()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => false,
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1155,8 +1155,8 @@ public function testMultipleChoiceExpandedWithLabelsAsFalse()
 
     public function testMultipleChoiceExpandedWithLabelsSetByCallable()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'choice_label' => function ($choice, $label, $value) {
                 if ('&b' === $choice) {
                     return false;
@@ -1166,9 +1166,9 @@ public function testMultipleChoiceExpandedWithLabelsSetByCallable()
             },
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/div
     [
         ./div
@@ -1205,16 +1205,16 @@ public function testMultipleChoiceExpandedWithLabelsSetByCallable()
 
     public function testMultipleChoiceExpandedWithLabelsSetFalseByCallable()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => function () {
                 return false;
             },
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1241,15 +1241,15 @@ public function testMultipleChoiceExpandedWithLabelsSetFalseByCallable()
 
     public function testMultipleChoiceExpandedWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1287,15 +1287,15 @@ public function testMultipleChoiceExpandedWithoutTranslation()
 
     public function testMultipleChoiceExpandedAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1335,7 +1335,7 @@ public function testCountry()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CountryType', 'AT');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -1347,12 +1347,12 @@ public function testCountry()
 
     public function testCountryWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CountryType', 'AT', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CountryType', 'AT', [
             'placeholder' => 'Select&Country',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -1365,12 +1365,12 @@ public function testCountryWithPlaceholder()
 
     public function testDateTime()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', date('Y').'-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', date('Y').'-02-03 04:05:06', [
             'input' => 'string',
             'with_seconds' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [
         ./select
@@ -1401,13 +1401,13 @@ public function testDateTime()
 
     public function testDateTimeWithPlaceholderGlobal()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', null, [
             'input' => 'string',
             'placeholder' => 'Change&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1439,14 +1439,14 @@ public function testDateTimeWithPlaceholderGlobal()
 
     public function testDateTimeWithHourAndMinute()
     {
-        $data = array('year' => date('Y'), 'month' => '2', 'day' => '3', 'hour' => '4', 'minute' => '5');
+        $data = ['year' => date('Y'), 'month' => '2', 'day' => '3', 'hour' => '4', 'minute' => '5'];
 
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', $data, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', $data, [
             'input' => 'array',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1478,12 +1478,12 @@ public function testDateTimeWithHourAndMinute()
 
     public function testDateTimeWithSeconds()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', date('Y').'-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', date('Y').'-02-03 04:05:06', [
             'input' => 'string',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1519,13 +1519,13 @@ public function testDateTimeWithSeconds()
 
     public function testDateTimeSingleText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', [
             'input' => 'string',
             'date_widget' => 'single_text',
             'time_widget' => 'single_text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1548,14 +1548,14 @@ public function testDateTimeSingleText()
 
     public function testDateTimeWithWidgetSingleText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', [
             'input' => 'string',
             'widget' => 'single_text',
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="datetime-local"]
     [@name="name"]
@@ -1567,16 +1567,16 @@ public function testDateTimeWithWidgetSingleText()
 
     public function testDateTimeWithWidgetSingleTextIgnoreDateAndTimeWidgets()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', [
             'input' => 'string',
             'date_widget' => 'choice',
             'time_widget' => 'choice',
             'widget' => 'single_text',
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="datetime-local"]
     [@name="name"]
@@ -1588,12 +1588,12 @@ public function testDateTimeWithWidgetSingleTextIgnoreDateAndTimeWidgets()
 
     public function testDateChoice()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', date('Y').'-02-03', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', date('Y').'-02-03', [
             'input' => 'string',
             'widget' => 'choice',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1617,14 +1617,14 @@ public function testDateChoice()
 
     public function testDateChoiceWithPlaceholderGlobal()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', null, [
             'input' => 'string',
             'widget' => 'choice',
             'placeholder' => 'Change&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1648,14 +1648,14 @@ public function testDateChoiceWithPlaceholderGlobal()
 
     public function testDateChoiceWithPlaceholderOnYear()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', null, [
             'input' => 'string',
             'widget' => 'choice',
             'required' => false,
-            'placeholder' => array('year' => 'Change&Me'),
-        ));
+            'placeholder' => ['year' => 'Change&Me'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1679,12 +1679,12 @@ public function testDateChoiceWithPlaceholderOnYear()
 
     public function testDateText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', '2011-02-03', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', '2011-02-03', [
             'input' => 'string',
             'widget' => 'text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1711,12 +1711,12 @@ public function testDateText()
 
     public function testDateSingleText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', '2011-02-03', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', '2011-02-03', [
             'input' => 'string',
             'widget' => 'single_text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="date"]
     [@name="name"]
@@ -1728,11 +1728,11 @@ public function testDateSingleText()
 
     public function testBirthDay()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType', '2000-02-03', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType', '2000-02-03', [
             'input' => 'string',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1756,13 +1756,13 @@ public function testBirthDay()
 
     public function testBirthDayWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType', '1950-01-01', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType', '1950-01-01', [
             'input' => 'string',
             'placeholder' => '',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -1791,7 +1791,7 @@ public function testEmail()
   
4277
  {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\EmailType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="email"]
     [@name="name"]
@@ -1804,11 +1804,11 @@ public function testEmail()
 
     public function testEmailWithMaxLength()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\EmailType', 'foo&bar', array(
-            'attr' => array('maxlength' => 123),
-        ));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\EmailType', 'foo&bar', [
+            'attr' => ['maxlength' => 123],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="email"]
     [@name="name"]
@@ -1823,7 +1823,7 @@ public function testHidden()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\HiddenType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="hidden"]
     [@name="name"]
@@ -1835,11 +1835,11 @@ public function testHidden()
 
     public function testDisabled()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'disabled' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="text"]
     [@name="name"]
@@ -1853,7 +1853,7 @@ public function testInteger()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\IntegerType', 123);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="number"]
     [@name="name"]
@@ -1867,7 +1867,7 @@ public function testLanguage()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\LanguageType', 'de');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -1881,7 +1881,7 @@ public function testLocale()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\LocaleType', 'de_AT');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -1893,11 +1893,11 @@ public function testLocale()
 
     public function testMoney()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\MoneyType', 1234.56, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\MoneyType', 1234.56, [
             'currency' => 'EUR',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="input-group"]
     [
@@ -1917,11 +1917,11 @@ public function testMoney()
 
     public function testMoneyWithoutCurrency()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\MoneyType', 1234.56, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\MoneyType', 1234.56, [
             'currency' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/input
     [@id="my&id"]
     [@type="text"]
@@ -1938,7 +1938,7 @@ public function testNumber()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\NumberType', 1234.56);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="text"]
     [@name="name"]
@@ -1952,7 +1952,7 @@ public function testPassword()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="password"]
     [@name="name"]
@@ -1963,12 +1963,12 @@ public function testPassword()
 
     public function testPasswordSubmittedWithNotAlwaysEmpty()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', null, [
             'always_empty' => false,
-        ));
+        ]);
         $form->submit('foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="password"]
     [@name="name"]
@@ -1980,11 +1980,11 @@ public function testPasswordSubmittedWithNotAlwaysEmpty()
 
     public function testPasswordWithMaxLength()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', 'foo&bar', array(
-            'attr' => array('maxlength' => 123),
-        ));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', 'foo&bar', [
+            'attr' => ['maxlength' => 123],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="password"]
     [@name="name"]
@@ -1998,7 +1998,7 @@ public function testPercent()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PercentType', 0.1);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="input-group"]
     [
@@ -2020,7 +2020,7 @@ public function testCheckedRadio()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RadioType', true);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="radio"]
     [
@@ -2044,7 +2044,7 @@ public function testUncheckedRadio()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RadioType', false);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="radio"]
     [
@@ -2065,11 +2065,11 @@ public function testUncheckedRadio()
 
     public function testRadioWithValue()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RadioType', false, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RadioType', false, [
             'value' => 'foo&bar',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="radio"]
     [
@@ -2090,9 +2090,9 @@ public function testRadioWithValue()
 
     public function testRange()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RangeType', 42, array('attr' => array('min' => 5)));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RangeType', 42, ['attr' => ['min' => 5]]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="range"]
     [@name="name"]
@@ -2105,9 +2105,9 @@ public function testRange()
 
     public function testRangeWithMinMaxValues()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RangeType', 42, array('attr' => array('min' => 5, 'max' => 57)));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RangeType', 42, ['attr' => ['min' => 5, 'max' => 57]]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="range"]
     [@name="name"]
@@ -2121,11 +2121,11 @@ public function testRangeWithMinMaxValues()
 
     public function testTextarea()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextareaType', 'foo&bar', array(
-            'attr' => array('pattern' => 'foo'),
-        ));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextareaType', 'foo&bar', [
+            'attr' => ['pattern' => 'foo'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/textarea
     [@name="name"]
     [@pattern="foo"]
@@ -2139,7 +2139,7 @@ public function testText()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="text"]
     [@name="name"]
@@ -2152,11 +2152,11 @@ public function testText()
 
     public function testTextWithMaxLength()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'foo&bar', array(
-            'attr' => array('maxlength' => 123),
-        ));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'foo&bar', [
+            'attr' => ['maxlength' => 123],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="text"]
     [@name="name"]
@@ -2171,7 +2171,7 @@ public function testSearch()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\SearchType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="search"]
     [@name="name"]
@@ -2184,12 +2184,12 @@ public function testSearch()
 
     public function testTime()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', [
             'input' => 'string',
             'with_seconds' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -2211,12 +2211,12 @@ public function testTime()
 
     public function testTimeWithSeconds()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', [
             'input' => 'string',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -2246,12 +2246,12 @@ public function testTimeWithSeconds()
 
     public function testTimeText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', [
             'input' => 'string',
             'widget' => 'text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -2279,12 +2279,12 @@ public function testTimeText()
 
     public function testTimeSingleText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', [
             'input' => 'string',
             'widget' => 'single_text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="time"]
     [@name="name"]
@@ -2297,13 +2297,13 @@ public function testTimeSingleText()
 
     public function testTimeWithPlaceholderGlobal()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', null, [
             'input' => 'string',
             'placeholder' => 'Change&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -2324,13 +2324,13 @@ public function testTimeWithPlaceholderGlobal()
 
     public function testTimeWithPlaceholderOnYear()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', null, array(
+        $form = $this->factory->cre
C951
ateNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', null, [
             'input' => 'string',
             'required' => false,
-            'placeholder' => array('hour' => 'Change&Me'),
-        ));
+            'placeholder' => ['hour' => 'Change&Me'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/div
     [@class="my&class form-inline"]
     [
@@ -2353,7 +2353,7 @@ public function testTimezone()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimezoneType', 'Europe/Vienna');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@name="name"]
     [@class="my&class form-control"]
@@ -2370,12 +2370,12 @@ public function testTimezone()
 
     public function testTimezoneWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimezoneType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimezoneType', null, [
             'placeholder' => 'Select&Timezone',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/select
     [@class="my&class form-control"]
     [./option[@value=""][not(@selected)][not(@disabled)][.="[trans]Select&Timezone[/trans]"]]
@@ -2390,7 +2390,7 @@ public function testUrl()
         $url = 'http://www.google.com?foo1=bar1&foo2=bar2';
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\UrlType', $url);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
     [@type="url"]
     [@name="name"]
@@ -2404,18 +2404,18 @@ public function testButton()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ButtonType');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
             '/button[@type="button"][@name="name"][.="[trans]Name[/trans]"][@class="my&class btn"]'
         );
     }
 
     public function testButtonlabelWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, [
             'translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
             '/button[@type="button"][@name="name"][.="Name"][@class="my&class btn"]'
         );
     }
@@ -2424,7 +2424,7 @@ public function testSubmit()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\SubmitType');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
             '/button[@type="submit"][@name="name"][@class="my&class btn"]'
         );
     }
@@ -2433,18 +2433,18 @@ public function testReset()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ResetType');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
             '/button[@type="reset"][@name="name"][@class="my&class btn"]'
         );
     }
 
     public function testWidgetAttributes()
     {
-        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', array(
+        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', [
             'required' => true,
             'disabled' => true,
-            'attr' => array('readonly' => true, 'maxlength' => 10, 'pattern' => '\d+', 'class' => 'foobar', 'data-foo' => 'bar'),
-        ));
+            'attr' => ['readonly' => true, 'maxlength' => 10, 'pattern' => '\d+', 'class' => 'foobar', 'data-foo' => 'bar'],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2454,9 +2454,9 @@ public function testWidgetAttributes()
 
     public function testWidgetAttributeNameRepeatedIfTrue()
     {
-        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', array(
-            'attr' => array('foo' => true),
-        ));
+        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', [
+            'attr' => ['foo' => true],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2466,10 +2466,10 @@ public function testWidgetAttributeNameRepeatedIfTrue()
 
     public function testButtonAttributes()
     {
-        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, array(
+        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, [
             'disabled' => true,
-            'attr' => array('class' => 'foobar', 'data-foo' => 'bar'),
-        ));
+            'attr' => ['class' => 'foobar', 'data-foo' => 'bar'],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2479,9 +2479,9 @@ public function testButtonAttributes()
 
     public function testButtonAttributeNameRepeatedIfTrue()
     {
-        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, array(
-            'attr' => array('foo' => true),
-        ));
+        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, [
+            'attr' => ['foo' => true],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2494,7 +2494,7 @@ public function testTel()
         $tel = '0102030405';
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TelType', $tel);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
             '/input
     [@type="tel"]
     [@name="name"]
@@ -2509,7 +2509,7 @@ public function testColor()
         $color = '#0000ff';
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ColorType', $color);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
             '/input
     [@type="color"]
     [@name="name"]
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4HorizontalLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4HorizontalLayoutTest.php
index 9d216e38194f..51a1360f63f4 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4HorizontalLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4HorizontalLayoutTest.php
@@ -49,7 +49,7 @@ public function testLabelOnForm()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType');
         $view = $form->createView();
-        $this->renderWidget($view, array('label' => 'foo'));
+        $this->renderWidget($view, ['label' => 'foo']);
         $html = $this->renderLabel($view);
 
         $this->assertMatchesXpath($html,
@@ -63,11 +63,11 @@ public function testLabelOnForm()
     public function testLabelDoesNotRenderFieldAttributes()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), null, array(
-            'attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -80,11 +80,11 @@ public function testLabelDoesNotRenderFieldAttributes()
     public function testLabelWithCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -97,11 +97,11 @@ public function testLabelWithCustomAttributesPassedDirectly()
     public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), 'Custom label', array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), 'Custom label', [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -114,14 +114,14 @@ public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
 
     public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'label' => 'Custom label',
-        ));
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        ]);
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -134,11 +134,11 @@ public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly
 
     public function testLegendOnExpandedType()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, [
             'label' => 'Custom label',
             'expanded' => true,
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-        ));
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+        ]);
         $view = $form->createView();
         $this->renderWidget($view);
         $html = $this->renderLabel($view);
@@ -153,10 +153,10 @@ public function testLegendOnExpandedType()
 
     public function testStartTag()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -165,25 +165,25 @@ public function testStartTag()
 
     public function testStartTagWithOverriddenVars()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'put',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
-        $html = $this->renderStart($form->createView(), array(
+        $html = $this->renderStart($form->createView(), [
             'method' => 'post',
             'action' => 'http://foo.com/directory',
-        ));
+        ]);
 
         $this->assertSame('<form name="form" method="post" action="http://foo.com/directory">', $html);
     }
 
     public function testStartTagForMultipartForm()
     {
-        $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'method' => 'get',
                 'action' => 'http://example.com/directory',
-            ))
+            ])
             ->add('file', 'Symfony\Component\Form\Extension\Core\Type\FileType')
             ->getForm();
 
@@ -194,14 +194,14 @@ public function testStartTagForMultipartForm()
 
     public function testStartTagWithExtraAttributes()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
-        $html = $this->renderStart($form->createView(), array(
-            'attr' => array('class' => 'foobar'),
-        ));
+        $html = $this->renderStart($form->createView(), [
+            'attr' => ['class' => 'foobar'],
+        ]);
 
         $this->assertSame('<form name="form" method="get" action="http://example.com/directory" class="foobar">', $html);
     }
@@ -210,7 +210,7 @@ public function testCheckboxRow()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType');
         $view = $form->createView();
-        $html = $this->renderRow($view, array('label' => 'foo'));
+        $html = $this->renderRow($view, ['label' => 'foo']);
 
         $this->assertMatchesXpath($html, '/div[@class="form-group row"]/div[@class="col-sm-2" or @class="col-sm-10"]', 2);
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
index 1d8c597920ce..30b5ea10e571 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
@@ -58,7 +58,7 @@ public function testLabelOnForm()
     {
         $form = $this->factory->createNamed('name', DateType::class);
         $view = $form->createView();
-        $this->renderWidget($view, array('label' => 'foo'));
+        $this->renderWidget($view, ['label' => 'foo']);
         $html = $this->renderLabel($view);
 
         $this->assertMatchesXpath($html,
@@ -72,11 +72,11 @@ public function testLabelOnForm()
     public function testLabelDoesNotRenderFieldAttributes()
     {
         $form = $this->factory->createNamed('name', TextType::class);
-        $html = $this->renderLabel($form->createView(), null, array(
-            'attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -89,11 +89,11 @@ public function testLabelDoesNotRenderFieldAttributes()
     public function testLabelWithCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', TextType::class);
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -106,11 +106,11 @@ public function testLabelWithCustomAttributesPassedDirectly()
     public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', TextType::class);
-        $html = $this->renderLabel($form->createView(), 'Custom label', array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), 'Custom label', [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -123,14 +123,14 @@ public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
 
     public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly()
     {
-        $form = $this->factory->createNamed('name', TextType::class, null, array(
+        $form = $this->factory->createNamed('name', TextType::class, null, [
             'label' => 'Custom label',
-        ));
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        ]);
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -143,11 +143,11 @@ public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly
 
     public function testLegendOnExpandedType()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, null, array(
+        $form = $this->factory->createNamed('name', ChoiceType::class, null, [
             'label' => 'Custom label',
             'expanded' => true,
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-        ));
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+        ]);
         $view = $form->createView();
         $this->renderWidget($view);
         $html = $this->renderLabel($view);
@@ -187,7 +187,7 @@ public function testErrors()
 
     public function testErrorWithNoLabel()
     {
-        $form = $this->factory->createNamed('name', TextType::class, array('label' => false));
+        $form = $this->factory->createNamed('name', TextType::class, ['label' => false]);
         $form->addError(new FormError('[trans]Error 1[/trans]'));
         $view = $form->createView();
         $html = $this->renderLabel($view);
@@ -199,7 +199,7 @@ public function testCheckedCheckbox()
     {
         $form = $this->factory->createNamed('name', CheckboxType::class, true);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -214,14 +214,14 @@ public function testCheckedCheckbox()
 
     public function testSingleChoiceAttributesWithMainAttributes()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
-            'attr' => array('class' => 'bar&baz'),
-        ));
+            'attr' => ['class' => 'bar&baz'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'bar&baz')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'bar&baz']],
 '/select
     [@name="name"]
     [@class="bar&baz form-control"]
@@ -237,14 +237,14 @@ public function testSingleChoiceAttributesWithMainAttributes()
 
     public function testSingleExpandedChoiceAttributesWithMainAttributes()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
-            'attr' => array('class' => 'bar&baz'),
-        ));
+            'attr' => ['class' => 'bar&baz'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'bar&baz')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'bar&baz']],
 '/div
     [@class="bar&baz"]
     [
@@ -272,7 +272,7 @@ public function testUncheckedCheckbox()
     {
         $form = $this->factory->createNamed('name', CheckboxType::class, false);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -286,11 +286,11 @@ public function testUncheckedCheckbox()
 
     public function testCheckboxWithValue()
     {
-        $form = $this->factory->createNamed('name', CheckboxType::class, false, array(
+        $form = $this->factory->createNamed('name', CheckboxType::class, false, [
             'value' => 'foo&bar',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -304,13 +304,13 @@ public function testCheckboxWithValue()
 
     public function testSingleChoiceExpanded()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -335,14 +335,14 @@ public function testSingleChoiceExpanded()
 
     public function testSingleChoiceExpandedWithLabelsAsFalse()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => false,
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -365,8 +365,8 @@ public function testSingleChoiceExpandedWithLabelsAsFalse()
 
     public function testSingleChoiceExpandedWithLabelsSetByCallable()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'choice_label' => function ($choice, $label, $value) {
                 if ('&b' === $choice) {
                     return false;
@@ -376,9 +376,9 @@ public function testSingleChoiceExpandedWithLabelsSetByCallable()
             },
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -409,16 +409,16 @@ public function testSingleChoiceExpandedWithLabelsSetByCallable()
 
     public function testSingleChoiceExpandedWithLabelsSetFalseByCallable()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => function () {
                 return false;
             },
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -441,14 +441,14 @@ public function testSingleChoiceExpandedWithLabelsSetFalseByCallable()
 
     public function testSingleChoiceExpandedWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -473,14 +473,14 @@ public function testSingleChoiceExpandedWithoutTranslation()
 
     public function testSingleChoiceExpandedAttributes()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -505,15 +505,15 @@ public function testSingleChoiceExpandedAttributes()
 
     public function testSingleChoiceExpandedWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'placeholder' => 'Test&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -545,16 +545,16 @@ public function testSingleChoiceExpandedWithPlaceholder()
 
     public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choice_translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -586,13 +586,13 @@ public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
 
     public function testSingleChoiceExpandedWithBooleanValue()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, true, array(
-            'choices' => array('Choice&A' => '1', 'Choice&B' => '0'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, true, [
+            'choices' => ['Choice&A' => '1', 'Choice&B' => '0'],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -617,14 +617,14 @@ public function testSingleChoiceExpandedWithBooleanValue()
 
     public function testMultipleChoiceExpanded()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -656,14 +656,14 @@ public function testMultipleChoiceExpanded()
 
     public function testMultipleChoiceExpandedWithLabelsAsFalse()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => false,
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -686,8 +686,8 @@ public function testMultipleChoiceExpandedWithLabelsAsFalse()
 
     public function testMultipleChoiceExpandedWithLabelsSetByCallable()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'choice_label' => function ($choice, $label, $value) {
                 if ('&b' === $choice) {
                     return false;
@@ -697,9 +697,9 @@ public function testMultipleChoiceExpandedWithLabelsSetByCallable()
             },
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/div
     [
         ./div
@@ -730,16 +730,16 @@ public function testMultipleChoiceExpandedWithLabelsSetByCallable()
 
     public function testMultipleChoiceExpandedWithLabelsSetFalseByCallable()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => function () {
                 return false;
             },
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -762,15 +762,15 @@ public function testMultipleChoiceExpandedWithLabelsSetFalseByCallable()
 
     public function testMultipleChoiceExpandedWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -802,15 +802,15 @@ public function testMultipleChoiceExpandedWithoutTranslation()
 
     public function testMultipleChoiceExpandedAttributes()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -844,7 +844,7 @@ public function testCheckedRadio()
     {
         $form = $this->factory->createNamed('name', RadioType::class, true);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -866,7 +866,7 @@ public function testUncheckedRadio()
     {
         $form = $this->factory->createNamed('name', RadioType::class, false);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -885,11 +885,11 @@ public function testUncheckedRadio()
 
     public function testRadioWithValue()
     {
-        $form = $this->factory->createNamed('name', RadioType::class, false, array(
+        $form = $this->factory->createNamed('name', RadioType::class, false, [
             'value' => 'foo&bar',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -909,9 +909,9 @@ public function testRadioWithValue()
 
     public function testButtonAttributeNameRepeatedIfTrue()
     {
-        $form = $this->factory->createNamed('button', ButtonType::class, null, array(
-            'attr' => array('foo' => true),
-        ));
+        $form = $this->factory->createNamed('button', ButtonType::class, null, [
+            'attr' => ['foo' => true],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -923,7 +923,7 @@ public function testFile()
     {
         $form = $this->factory->createNamed('name', FileType::class);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'my&class form-control-file')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class form-control-file']],
 '/input
     [@type="file"]
 '
@@ -932,11 +932,11 @@ public function testFile()
 
     public function testMoney()
     {
-        $form = $this->factory->createNamed('name', MoneyType::class, 1234.56, array(
+        $form = $this->factory->createNamed('name', MoneyType::class, 1234.56, [
             'currency' => 'EUR',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
             '/div
     [@class="input-group"]
     [
@@ -962,7 +962,7 @@ public function testPercent()
     {
         $form = $this->factory->createNamed('name', PercentType::class, 0.1);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
             '/div
     [@class="input-group"]
     [
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/CodeExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/CodeExtensionTest.php
index 336991c6ca9f..a637117f0933 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/CodeExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/CodeExtensionTest.php
@@ -41,20 +41,20 @@ public function testGettingMethodAbbreviation($method, $abbr)
 
     public function getClassNameProvider()
     {
-        return array(
-            array('F\Q\N\Foo', '<abbr title="F\Q\N\Foo">Foo</abbr>'),
-            array('Bare', '<abbr title="Bare">Bare</abbr>'),
-        );
+        return [
+            ['F\Q\N\Foo', '<abbr title="F\Q\N\Foo">Foo</abbr>'],
+            ['Bare', '<abbr title="Bare">Bare</abbr>'],
+        ];
     }
 
     public function getMethodNameProvider()
     {
-        return array(
-            array('F\Q\N\Foo::Method', '<abbr title="F\Q\N\Foo">Foo</abbr>::Method()'),
-            array('Bare::Method', '<abbr title="Bare">Bare</abbr>::Method()'),
-            array('Closure', '<abbr title="Closure">Closure</abbr>'),
-            array('Method', '<abbr title="Method">Method</abbr>()'),
-        );
+        return [
+            ['F\Q\N\Foo::Method', '<abbr title="F\Q\N\Foo">Foo</abbr>::Method()'],
+            ['Bare::Method', '<abbr title="Bare">Bare</abbr>::Method()'],
+            ['Closure', '<abbr title="Closure">Closure</abbr>'],
+            ['Method', '<abbr title="Method">Method</abbr>()'],
+        ];
     }
 
     public function testGetName()
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/DumpExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/DumpExtensionTest.php
index 1522928a6c41..273ca922d6fe 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/DumpExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/DumpExtensionTest.php
@@ -27,11 +27,11 @@ class DumpExtensionTest extends TestCase
     public function testDumpTag($template, $debug, $expectedOutput, $expectedDumped)
     {
         $extension = new DumpExtension(new VarCloner());
-        $twig = new Environment(new ArrayLoader(array('template' => $template)), array(
+        $twig = new Environment(new ArrayLoader(['template' => $template]), [
             'debug' => $debug,
             'cache' => false,
             'optimizations' => 0,
-        ));
+        ]);
         $twig->addExtension($extension);
 
         $dumped = null;
@@ -54,11 +54,11 @@ public function testDumpTag($template, $debug, $expectedOutput, $expectedDumped)
 
     public function getDumpTags()
     {
-        return array(
-            array('A{% dump %}B', true, 'AB', array()),
-            array('A{% set foo="bar"%}B{% dump %}C', true, 'ABC', array('foo' => 'bar')),
-            array('A{% dump %}B', false, 'AB', null),
-        );
+        return [
+            ['A{% dump %}B', true, 'AB', []],
+            ['A{% set foo="bar"%}B{% dump %}C', true, 'ABC', ['foo' => 'bar']],
+            ['A{% dump %}B', false, 'AB', null],
+        ];
     }
 
     /**
@@ -67,16 +67,16 @@ public function getDumpTags()
     public function testDump($context, $args, $expectedOutput, $debug = true)
     {
         $extension = new DumpExtension(new VarCloner());
-        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array(
+        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), [
             'debug' => $debug,
             'cache' => false,
             'optimizations' => 0,
-        ));
+        ]);
 
         array_unshift($args, $context);
         array_unshift($args, $twig);
 
-        $dump = \call_user_func_array(array($extension, 'dump'), $args);
+        $dump = \call_user_func_array([$extension, 'dump'], $args);
 
         if ($debug) {
             $this->assertStringStartsWith('<script>', $dump);
@@ -88,24 +88,24 @@ public function testDump($context, $args, $expectedOutput, $debug = true)
 
     public function getDumpArgs()
     {
-        return array(
-            array(array(), array(), '', false),
-            array(array(), array(), "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \">[]\n</pre><script>Sfdump(\"sf-dump\")</script>\n"),
-            array(
-                array(),
-                array(123, 456),
+        return [
+            [[], [], '', false],
+            [[], [], "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \">[]\n</pre><script>Sfdump(\"sf-dump\")</script>\n"],
+            [
+                [],
+                [123, 456],
                 "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \"><span class=sf-dump-num>123</span>\n</pre><script>Sfdump(\"sf-dump\")</script>\n"
                 ."<pre class=sf-dump id=sf-dump data-indent-pad=\"  \"><span class=sf-dump-num>456</span>\n</pre><script>Sfdump(\"sf-dump\")</script>\n",
-            ),
-            array(
-                array('foo' => 'bar'),
-                array(),
+            ],
+            [
+                ['foo' => 'bar'],
+                [],
                 "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \"><span class=sf-dump-note>array:1</span> [<samp>\n"
                 ."  \"<span class=sf-dump-key>foo</span>\" => \"<span class=sf-dump-str title=\"3 characters\">bar</span>\"\n"
                 ."</samp>]\n"
                 ."</pre><script>Sfdump(\"sf-dump\")</script>\n",
-            ),
-        );
+            ],
+        ];
     }
 
     public function testCustomDumper()
@@ -123,13 +123,13 @@ public function testCustomDumper()
             '</pre><script>Sfdump("%s")</script>'
         );
         $extension = new DumpExtension(new VarCloner(), $dumper);
-        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array(
+        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), [
             'debug' => true,
             'cache' => false,
             'optimizations' => 0,
-        ));
+        ]);
 
-        $dump = $extension->dump($twig, array(), 'foo');
+        $dump = $extension->dump($twig, [], 'foo');
         $dump = preg_replace('/sf-dump-\d+/', 'sf-dump', $dump);
 
         $this->assertEquals(
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/ExpressionExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/ExpressionExtensionTest.php
index b2ee22c6a969..bfb9c578bbc9 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/ExpressionExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/ExpressionExtensionTest.php
@@ -21,7 +21,7 @@ class ExpressionExtensionTest extends TestCase
     public function testExpressionCreation()
     {
         $template = "{{ expression('1 == 1') }}";
-        $twig = new Environment(new ArrayLoader(array('template' => $template)), array('debug' => true, 'cache' => false, 'autoescape' => 'html', 'optimizations' => 0));
+        $twig = new Environment(new ArrayLoader(['template' => $template]), ['debug' => true, 'cache' => false, 'autoescape' => 'html', 'optimizations' => 0]);
         $twig->addExtension(new ExpressionExtension());
 
         $output = $twig->render('template');
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/Fixtures/StubTranslator.php b/src/Symfony/Bridge/Twig/Tests/Extension/Fixtures/StubTranslator.php
index b7d011b59940..5ef9e61b60ec 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/Fixtures/StubTranslator.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/Fixtures/StubTranslator.php
@@ -15,12 +15,12 @@
 
 class StubTranslator implements TranslatorInterface
 {
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         return '[trans]'.$id.'[/trans]';
     }
 
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         return '[trans]'.$id.'[/trans]';
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap3HorizontalLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap3HorizontalLayoutTest.php
index 56690a7e9bf5..02f6ac9b1e26 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap3HorizontalLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap3HorizontalLayoutTest.php
@@ -24,9 +24,9 @@ class FormExtensionBootstrap3HorizontalLayoutTest extends AbstractBootstrap3Hori
 {
     use RuntimeLoaderProvider;
 
-    protected $testableFeatures = array(
+    protected $testableFeatures = [
         'choice_attr',
-    );
+    ];
 
     /**
      * @var FormRenderer
@@ -37,32 +37,32 @@ protected function setUp()
     {
         parent::setUp();
 
-        $loader = new StubFilesystemLoader(array(
+        $loader = new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        ));
+        ]);
 
-        $environment = new Environment($loader, array('strict_variables' => true));
+        $environment = new Environment($loader, ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addExtension(new FormExtension());
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'bootstrap_3_horizontal_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         if (null !== $label) {
-            $vars += array('label' => $label);
+            $vars += ['label' => $label];
         }
 
         return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
@@ -73,27 +73,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap3LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap3LayoutTest.php
index 5a36f6e4fd1b..0c2ef171b254 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap3LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap3LayoutTest.php
@@ -33,29 +33,29 @@ protected function setUp()
     {
         parent::setUp();
 
-        $loader = new StubFilesystemLoader(array(
+        $loader = new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        ));
+      
F438
  ]);
 
-        $environment = new Environment($loader, array('strict_variables' => true));
+        $environment = new Environment($loader, ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addExtension(new FormExtension());
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'bootstrap_3_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
     }
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -64,10 +64,10 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -76,18 +76,18 @@ public function testStartTagHasActionAttributeWhenActionIsZero()
 
     public function testMoneyWidgetInIso()
     {
-        $environment = new Environment(new StubFilesystemLoader(array(
+        $environment = new Environment(new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        )), array('strict_variables' => true));
+        ]), ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addExtension(new FormExtension());
         $environment->setCharset('ISO-8859-1');
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'bootstrap_3_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
 
@@ -104,15 +104,15 @@ public function testMoneyWidgetInIso()
         , trim($this->renderWidget($view)));
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         if (null !== $label) {
-            $vars += array('label' => $label);
+            $vars += ['label' => $label];
         }
 
         return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
@@ -123,27 +123,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap4HorizontalLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap4HorizontalLayoutTest.php
index 27415924e7d1..319c0e57308a 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap4HorizontalLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap4HorizontalLayoutTest.php
@@ -29,9 +29,9 @@ class FormExtensionBootstrap4HorizontalLayoutTest extends AbstractBootstrap4Hori
 {
     use RuntimeLoaderProvider;
 
-    protected $testableFeatures = array(
+    protected $testableFeatures = [
         'choice_attr',
-    );
+    ];
 
     private $renderer;
 
@@ -39,32 +39,32 @@ protected function setUp()
     {
         parent::setUp();
 
-        $loader = new StubFilesystemLoader(array(
+        $loader = new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        ));
+        ]);
 
-        $environment = new Environment($loader, array('strict_variables' => true));
+        $environment = new Environment($loader, ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addExtension(new FormExtension());
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'bootstrap_4_horizontal_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         if (null !== $label) {
-            $vars += array('label' => $label);
+            $vars += ['label' => $label];
         }
 
         return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
@@ -75,27 +75,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap4LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap4LayoutTest.php
index 9c41610d1c73..ea36552d85b7 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap4LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionBootstrap4LayoutTest.php
@@ -37,29 +37,29 @@ protected function setUp()
     {
         parent::setUp();
 
-        $loader = new StubFilesystemLoader(array(
+        $loader = new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        ));
+        ]);
 
-        $environment = new Environment($loader, array('strict_variables' => true));
+        $environment = new Environment($loader, ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addExtension(new FormExtension());
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'bootstrap_4_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
     }
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -68,10 +68,10 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -80,18 +80,18 @@ public function testStartTagHasActionAttributeWhenActionIsZero()
 
     public function testMoneyWidgetInIso()
     {
-        $environment = new Environment(new StubFilesystemLoader(array(
+        $environment = new Environment(new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        )), array('strict_variables' => true));
+        ]), ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addExtension(new FormExtension());
         $environment->setCharset('ISO-8859-1');
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'bootstrap_4_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
 
@@ -108,15 +108,15 @@ public function testMoneyWidgetInIso()
         , trim($this->renderWidget($view)));
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         if (null !== $label) {
-            $vars += array('label' => $label);
+            $vars += ['label' => $label];
         }
 
         return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
@@ -127,27 +127,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php
index 314f9055c22e..456e6730faa3 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php
@@ -35,22 +35,22 @@ protected function setUp()
     {
         parent::setUp();
 
-        $loader = new StubFilesystemLoader(array(
+        $loader = new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        ));
+        ]);
 
-        $environment = new Environment($loader, array('strict_variables' => true));
+        $environment = new Environment($loader, ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addGlobal('global', '');
         // the value can be any template that exists
         $environment->addGlobal('dynamic_template_name', 'child_label');
         $environment->addExtension(new FormExtension());
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'form_div_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
     }
@@ -62,7 +62,7 @@ public function testThemeBlockInheritanceUsingUse()
             ->createView()
         ;
 
-        $this->setTheme($view, array('theme_use.html.twig'));
+        $this->setTheme($view, ['theme_use.html.twig']);
 
         $this->assertMatchesXpath(
             $this->renderWidget($view),
@@ -77,7 +77,7 @@ public function testThemeBlockInheritanceUsingExtend()
             ->createView()
         ;
 
-        $this->setTheme($view, array('theme_extends.html.twig'));
+        $this->setTheme($view, ['theme_extends.html.twig']);
 
         $this->assertMatchesXpath(
             $this->renderWidget($view),
@@ -92,7 +92,7 @@ public function testThemeBlockInheritanceUsingDynamicExtend()
             ->createView()
         ;
 
-        $this->renderer->setTheme($view, array('page_dynamic_extends.html.twig'));
+        $this->renderer->setTheme($view, ['page_dynamic_extends.html.twig']);
         $this->assertMatchesXpath(
             $this->renderer->searchAndRenderBlock($view, 'row'),
             '/div/label[text()="child"]'
@@ -101,18 +101,18 @@ public function testThemeBlockInheritanceUsingDynamicExtend()
 
     public function isSelectedChoiceProvider()
     {
-        return array(
-            array(true, '0', '0'),
-            array(true, '1', '1'),
-            array(true, '', ''),
-            array(true, '1.23', '1.23'),
-            array(true, 'foo', 'foo'),
-            array(true, 'foo10', 'foo10'),
-            array(true, 'foo', array(1, 'foo', 'foo10')),
-
-            array(false, 10, array(1, 'foo', 'foo10')),
-            array(false, 0, array(1, 'foo', 'foo10')),
-        );
+        return [
+            [true, '0', '0'],
+            [true, '1', '1'],
+            [true, '', ''],
+            [true, '1.23', '1.23'],
+            [true, 'foo', 'foo'],
+            [true, 'foo10', 'foo10'],
+            [true, 'foo', [1, 'foo', 'foo10']],
+
+            [false, 10, [1, 'foo', 'foo10']],
+            [false, 0, [1, 'foo', 'foo10']],
+        ];
     }
 
     /**
@@ -127,10 +127,10 @@ public function testIsChoiceSelected($expected, $choice, $value)
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -139,10 +139,10 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -151,10 +151,10 @@ public function testStartTagHasActionAttributeWhenActionIsZero()
 
     public function isRootFormProvider()
     {
-        return array(
-            array(true, new FormView()),
-            array(false, new FormView(new FormView())),
-        );
+        return [
+            [true, new FormView()],
+            [false, new FormView(new FormView())],
+        ];
     }
 
     /**
@@ -167,18 +167,18 @@ public function testIsRootForm($expected, FormView $formView)
 
     public function testMoneyWidgetInIso()
     {
-        $environment = new Environment(new StubFilesystemLoader(array(
+        $environment = new Environment(new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        )), array('strict_variables' => true));
+        ]), ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addExtension(new FormExtension());
         $environment->setCharset('ISO-8859-1');
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'form_div_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
 
@@ -190,15 +190,15 @@ public function testMoneyWidgetInIso()
         $this->assertSame('&euro; <input type="text" id="name" name="name" required="required" />', $this->renderWidget($view));
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         if (null !== $label) {
-            $vars += array('label' => $label);
+            $vars += ['label' => $label];
         }
 
         return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
@@ -209,27 +209,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
     }
@@ -241,15 +241,15 @@ protected function setTheme(FormView $view, array $themes, $useDefaultThemes = t
 
     public static function themeBlockInheritanceProvider()
     {
-        return array(
-            array(array('theme.html.twig')),
-        );
+        return [
+            [['theme.html.twig']],
+        ];
     }
 
     public static function themeInheritanceProvider()
     {
-        return array(
-            array(array('parent_label.html.twig'), array('child_label.html.twig')),
-        );
+        return [
+            [['parent_label.html.twig'], ['child_label.html.twig']],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php
index 7f2b900f11d6..7811a41eb6bb 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php
@@ -34,30 +34,30 @@ protected function setUp()
     {
         parent::setUp();
 
-        $loader = new StubFilesystemLoader(array(
+        $loader = new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        ));
+        ]);
 
-        $environment = new Environment($loader, array('strict_variables' => true));
+        $environment = new Environment($loader, ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addGlobal('global', '');
         $environment->addExtension(new FormExtension());
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'form_table_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
     }
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -66,25 +66,25 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
         $this->assertSame('<form name="form" method="get" action="0">', $html);
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         if (null !== $label) {
-            $vars += array('label' => $label);
+            $vars += ['label' => $label];
         }
 
         return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
@@ -95,27 +95,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTest.php
index a4d7350716e6..4bdf78775564 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTest.php
@@ -49,7 +49,7 @@ public function rendererDataProvider()
         $twigRenderer->expects($this->once())
             ->method('setEnvironment');
 
-        yield array($twigRenderer, $twigRenderer);
+        yield [$twigRenderer, $twigRenderer];
 
         $twigRenderer = $this->getMockBuilder(TwigRendererInterface::class)->getMock();
         $twigRenderer->expects($this->once())
@@ -61,7 +61,7 @@ public function rendererDataProvider()
             ->with('service_id')
             ->willReturn($twigRenderer);
 
-        yield array(array($container, 'service_id'), $twigRenderer);
+        yield [[$container, 'service_id'], $twigRenderer];
 
         $formRenderer = $this->getMockBuilder(FormRendererInterface::class)->getMock();
 
@@ -71,6 +71,6 @@ public function rendererDataProvider()
             ->with('service_id')
             ->willReturn($formRenderer);
 
-        yield array(array($container, 'service_id'), $formRenderer);
+        yield [[$container, 'service_id'], $formRenderer];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/HttpFoundationExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/HttpFoundationExtensionTest.php
index dcabc5739be5..38ee375b94b1 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/HttpFoundationExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/HttpFoundationExtensionTest.php
@@ -33,25 +33,25 @@ public function testGenerateAbsoluteUrl($expected, $path, $pathinfo)
 
     public function getGenerateAbsoluteUrlData()
     {
-        return array(
-            array('http://localhost/foo.png', '/foo.png', '/foo/bar.html'),
-            array('http://localhost/foo/foo.png', 'foo.png', '/foo/bar.html'),
-            array('http://localhost/foo/foo.png', 'foo.png', '/foo/bar'),
-            array('http://localhost/foo/bar/foo.png', 'foo.png', '/foo/bar/'),
-
-            array('http://example.com/baz', 'http://example.com/baz', '/'),
-            array('https://example.com/baz', 'https://example.com/baz', '/'),
-            array('//example.com/baz', '//example.com/baz', '/'),
-
-            array('http://localhost/foo/bar?baz', '?baz', '/foo/bar'),
-            array('http://localhost/foo/bar?baz=1', '?baz=1', '/foo/bar?foo=1'),
-            array('http://localhost/foo/baz?baz=1', 'baz?baz=1', '/foo/bar?foo=1'),
-
-            array('http://localhost/foo/bar#baz', '#baz', '/foo/bar'),
-            array('http://localhost/foo/bar?0#baz', '#baz', '/foo/bar?0'),
-            array('http://localhost/foo/bar?baz=1#baz', '?baz=1#baz', '/foo/bar?foo=1'),
-            array('http://localhost/foo/baz?baz=1#baz', 'baz?baz=1#baz', '/foo/bar?foo=1'),
-        );
+        return [
+            ['http://localhost/foo.png', '/foo.png', '/foo/bar.html'],
+            ['http://localhost/foo/foo.png', 'foo.png', '/foo/bar.html'],
+            ['http://localhost/foo/foo.png', 'foo.png', '/foo/bar'],
+            ['http://localhost/foo/bar/foo.png', 'foo.png', '/foo/bar/'],
+
+            ['http://example.com/baz', 'http://example.com/baz', '/'],
+            ['https://example.com/baz', 'https://example.com/baz', '/'],
+            ['//example.com/baz', '//example.com/baz', '/'],
+
+            ['http://localhost/foo/bar?baz', '?baz', '/foo/bar'],
+            ['http://localhost/foo/bar?baz=1', '?baz=1', '/foo/bar?foo=1'],
+            ['http://localhost/foo/baz?baz=1', 'baz?baz=1', '/foo/bar?foo=1'],
+
+            ['http://localhost/foo/bar#baz', '#baz', '/foo/bar'],
+            ['http://localhost/foo/bar?0#baz', '#baz', '/foo/bar?0'],
+            ['http://localhost/foo/bar?baz=1#baz', '?baz=1#baz', '/foo/bar?foo=1'],
+            ['http://localhost/foo/baz?baz=1#baz', 'baz?baz=1#baz', '/foo/bar?foo=1'],
+        ];
     }
 
     /**
@@ -85,16 +85,16 @@ public function testGenerateAbsoluteUrlWithoutRequestAndRequestContext($path)
 
     public function getGenerateAbsoluteUrlRequestContextData()
     {
-        return array(
-            array('/foo.png', '/foo', 'localhost', 'http', 80, 443, 'http://localhost/foo.png'),
-            array('foo.png', '/foo', 'localhost', 'http', 80, 443, 'http://localhost/foo/foo.png'),
-            array('foo.png', '/foo/bar/', 'localhost', 'http', 80, 443, 'http://localhost/foo/bar/foo.png'),
-            array('/foo.png', '/foo', 'localhost', 'https', 80, 443, 'https://localhost/foo.png'),
-            array('foo.png', '/foo', 'localhost', 'https', 80, 443, 'https://localhost/foo/foo.png'),
-            array('foo.png', '/foo/bar/', 'localhost', 'https', 80, 443, 'https://localhost/foo/bar/foo.png'),
-            array('/foo.png', '/foo', 'localhost', 'http', 443, 80, 'http://localhost:443/foo.png'),
-            array('/foo.png', '/foo', 'localhost', 'https', 443, 80, 'https://localhost:80/foo.png'),
-        );
+        return [
+            ['/foo.png', '/foo', 'localhost', 'http', 80, 443, 'http://localhost/foo.png'],
+            ['foo.png', '/foo', 'localhost', 'http', 80, 443, 'http://localhost/foo/foo.png'],
+            ['foo.png', '/foo/bar/', 'localhost', 'http', 80, 443, 'http://localhost/foo/bar/foo.png'],
+            ['/foo.png', '/foo', 'localhost', 'https', 80, 443, 'https://localhost/foo.png'],
+            ['foo.png', '/foo', 'localhost', 'https', 80, 443, 'https://localhost/foo/foo.png'],
+            ['foo.png', '/foo/bar/', 'localhost', 'https', 80, 443, 'https://localhost/foo/bar/foo.png'],
+            ['/foo.png', '/foo', 'localhost', 'http', 443, 80, 'http://localhost:443/foo.png'],
+            ['/foo.png', '/foo', 'localhost', 'https', 443, 80, 'https://localhost:80/foo.png'],
+        ];
     }
 
     public function testGenerateAbsoluteUrlWithScriptFileName()
@@ -130,14 +130,14 @@ public function testGenerateRelativePath($expected, $path, $pathinfo)
 
     public function getGenerateRelativePathData()
     {
-        return array(
-            array('../foo.png', '/foo.png', '/foo/bar.html'),
-            array('../baz/foo.png', '/baz/foo.png', '/foo/bar.html'),
-            array('baz/foo.png', 'baz/foo.png', '/foo/bar.html'),
-
-            array('http://example.com/baz', 'http://example.com/baz', '/'),
-            array('https://example.com/baz', 'https://example.com/baz', '/'),
-            array('//example.com/baz', '//example.com/baz', '/'),
-        );
+        return [
+            ['../foo.png', '/foo.png', '/foo/bar.html'],
+            ['../baz/foo.png', '/baz/foo.png', '/foo/bar.html'],
+            ['baz/foo.png', 'baz/foo.png', '/foo/bar.html'],
+
+            ['http://example.com/baz', 'http://example.com/baz', '/'],
+            ['https://example.com/baz', 'https://example.com/baz', '/'],
+            ['//example.com/baz', '//example.com/baz', '/'],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/HttpKernelExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/HttpKernelExtensionTest.php
index 9f19847eb882..9fe36b40c906 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/HttpKernelExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/HttpKernelExtensionTest.php
@@ -72,19 +72,19 @@ protected function getFragmentHandler($return)
 
         $context->expects($this->any())->method('getCurrentRequest')->will($this->returnValue(Request::create('/')));
 
-        return new FragmentHandler($context, array($strategy), false);
+        return new FragmentHandler($context, [$strategy], false);
     }
 
     protected function renderTemplate(FragmentHandler $renderer, $template = '{{ render("foo") }}')
     {
-        $loader = new ArrayLoader(array('index' => $template));
-        $twig = new Environment($loader, array('debug' => true, 'cache' => false));
+        $loader = new ArrayLoader(['index' => $template]);
+        $twig = new Environment($loader, ['debug' => true, 'cache' => false]);
         $twig->addExtension(new HttpKernelExtension());
 
         $loader = $this->getMockBuilder('Twig\RuntimeLoader\RuntimeLoaderInterface')->getMock();
-        $loader->expects($this->any())->method('load')->will($this->returnValueMap(array(
-            array('Symfony\Bridge\Twig\Extension\HttpKernelRuntime', new HttpKernelRuntime($renderer)),
-        )));
+        $loader->expects($this->any())->method('load')->will($this->returnValueMap([
+            ['Symfony\Bridge\Twig\Extension\HttpKernelRuntime', new HttpKernelRuntime($renderer)],
+        ]));
         $twig->addRuntimeLoader($loader);
 
         return $twig->render('index');
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/RoutingExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/RoutingExtensionTest.php
index fdff03985122..05f7ad741c7e 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/RoutingExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/RoutingExtensionTest.php
@@ -24,7 +24,7 @@ class RoutingExtensionTest extends TestCase
      */
     public function testEscaping($template, $mustBeEscaped)
     {
-        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array('debug' => true, 'cache' => false, 'autoescape' => 'html', 'optimizations' => 0));
+        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), ['debug' => true, 'cache' => false, 'autoescape' => 'html', 'optimizations' => 0]);
         $twig->addExtension(new RoutingExtension($this->getMockBuilder('Symfony\Component\Routing\Generator\UrlGeneratorInterface')->getMock()));
 
         $nodes = $twig->parse($twig->tokenize(new Source($template, '')));
@@ -34,21 +34,21 @@ public function testEscaping($template, $mustBeEscaped)
 
     public function getEscapingTemplates()
     {
-        return array(
-            array('{{ path("foo") }}', false),
-            array('{{ path("foo", {}) }}', false),
-            array('{{ path("foo", { foo: "foo" }) }}', false),
-            array('{{ path("foo", foo) }}', true),
-            array('{{ path("foo", { foo: foo }) }}', true),
-            array('{{ path("foo", { foo: ["foo", "bar"] }) }}', true),
-            array('{{ path("foo", { foo: "foo", bar: "bar" }) }}', true),
-
-            array('{{ path(name = "foo", parameters = {}) }}', false),
-            array('{{ path(name = "foo", parameters = { foo: "foo" }) }}', false),
-            array('{{ path(name = "foo", parameters = foo) }}', true),
-            array('{{ path(name = "foo", parameters = { foo: ["foo", "bar"] }) }}', true),
-            array('{{ path(name = "foo", parameters = { foo: foo }) }}', true),
-            array('{{ path(name = "foo", parameters = { foo: "foo", bar: "bar" }) }}', true),
-        );
+        return [
+            ['{{ path("foo") }}', false],
+            ['{{ path("foo", {}) }}', false],
+            ['{{ path("foo", { foo: "foo" }) }}', false],
+            ['{{ path("foo", foo) }}', true],
+            ['{{ path("foo", { foo: foo }) }}', true],
+            ['{{ path("foo", { foo: ["foo", "bar"] }) }}', true],
+            ['{{ path("foo", { foo: "foo", bar: "bar" }) }}', true],
+
+            ['{{ path(name = "foo", parameters = {}) }}', false],
+            ['{{ path(name = "foo", parameters = { foo: "foo" }) }}', false],
+            ['{{ path(name = "foo", parameters = foo) }}', true],
+            ['{{ path(name = "foo", parameters = { foo: ["foo", "bar"] }) }}', true],
+            ['{{ path(name = "foo", parameters = { foo: foo }) }}', true],
+            ['{{ path(name = "foo", parameters = { foo: "foo", bar: "bar" }) }}', true],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/RuntimeLoaderProvider.php b/src/Symfony/Bridge/Twig/Tests/Extension/RuntimeLoaderProvider.php
index 4934bef87d46..0bec8ec6f1aa 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/RuntimeLoaderProvider.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/RuntimeLoaderProvider.php
@@ -19,9 +19,9 @@ trait RuntimeLoaderProvider
     protected function registerTwigRuntimeLoader(Environment $environment, FormRenderer $renderer)
     {
         $loader = $this->getMockBuilder('Twig\RuntimeLoader\RuntimeLoaderInterface')->getMock();
-        $loader->expects($this->any())->method('load')->will($this->returnValueMap(array(
-            array('Symfony\Component\Form\FormRenderer', $renderer),
-        )));
+        $loader->expects($this->any())->method('load')->will($this->returnValueMap([
+            ['Symfony\Component\Form\FormRenderer', $renderer],
+        ]));
         $environment->addRuntimeLoader($loader);
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/StopwatchExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/StopwatchExtensionTest.php
index 901425b1b94c..1af65e4c19a7 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/StopwatchExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/StopwatchExtensionTest.php
@@ -24,7 +24,7 @@ class StopwatchExtensionTest extends TestCase
      */
     public function testFailIfStoppingWrongEvent()
     {
-        $this->testTiming('{% stopwatch "foo" %}{% endstopwatch "bar" %}', array());
+        $this->testTiming('{% stopwatch "foo" %}{% endstopwatch "bar" %}', []);
     }
 
     /**
@@ -32,7 +32,7 @@ public function testFailIfStoppingWrongEvent()
      */
     public function testTiming($template, $events)
     {
-        $twig = new Environment(new ArrayLoader(array('template' => $template)), array('debug' => true, 'cache' => false, 'autoescape' => 'html', 'optimizations' => 0));
+        $twig = new Environment(new ArrayLoader(['template' => $template]), ['debug' => true, 'cache' => false, 'autoescape' => 'html', 'optimizations' => 0]);
         $twig->addExtension(new StopwatchExtension($this->getStopwatch($events)));
 
         try {
@@ -44,19 +44,19 @@ public function testTiming($template, $events)
 
     public function getTimingTemplates()
     {
-        return array(
-            array('{% stopwatch "foo" %}something{% endstopwatch %}', 'foo'),
-            array('{% stopwatch "foo" %}symfony is fun{% endstopwatch %}{% stopwatch "bar" %}something{% endstopwatch %}', array('foo', 'bar')),
-            array('{% set foo = "foo" %}{% stopwatch foo %}something{% endstopwatch %}', 'foo'),
-            array('{% set foo = "foo" %}{% stopwatch foo %}something {% set foo = "bar" %}{% endstopwatch %}', 'foo'),
-            array('{% stopwatch "foo.bar" %}something{% endstopwatch %}', 'foo.bar'),
-            array('{% stopwatch "foo" %}something{% endstopwatch %}{% stopwatch "foo" %}something else{% endstopwatch %}', array('foo', 'foo')),
-        );
+        return [
+            ['{% stopwatch "foo" %}something{% endstopwatch %}', 'foo'],
+            ['{% stopwatch "foo" %}symfony is fun{% endstopwatch %}{% stopwatch "bar" %}something{% endstopwatch %}', ['foo', 'bar']],
+            ['{% set foo = "foo" %}{% stopwatch foo %}something{% endstopwatch %}', 'foo'],
+            ['{% set foo = "foo" %}{% stopwatch foo %}something {% set foo = "bar" %}{% endstopwatch %}', 'foo'],
+            ['{% stopwatch "foo.bar" %}something{% endstopwatch %}', 'foo.bar'],
+            ['{% stopwatch "foo" %}something{% endstopwatch %}{% stopwatch "foo" %}something else{% endstopwatch %}', ['foo', 'foo']],
+        ];
     }
 
-    protected function getStopwatch($events = array())
+    protected function getStopwatch($events = [])
     {
-        $events = \is_array($events) ? $events : array($events);
+        $events = \is_array($events) ? $events : [$events];
         $stopwatch = $this->getMockBuilder('Symfony\Component\Stopwatch\Stopwatch')->getMock();
 
         $i = -1;
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
index feba2b2b6b0d..ef4bf9e1114e 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
@@ -22,7 +22,7 @@ class TranslationExtensionTest extends TestCase
 {
     public function testEscaping()
     {
-        $output = $this->getTemplate('{% trans %}Percent: %value%%% (%msg%){% endtrans %}')->render(array('value' => 12, 'msg' => 'approx.'));
+        $output = $this->getTemplate('{% trans %}Percent: %value%%% (%msg%){% endtrans %}')->render(['value' => 12, 'msg' => 'approx.']);
 
         $this->assertEquals('Percent: 12% (approx.)', $output);
     }
@@ -30,12 +30,12 @@ public function testEscaping()
     /**
      * @dataProvider getTransTests
      */
-    public function testTrans($template, $expected, array $variables = array())
+    public function testTrans($template, $expected, array $variables = [])
     {
         if ($expected != $this->getTemplate($template)->render($variables)) {
             echo $template."\n";
-            $loader = new TwigArrayLoader(array('index' => $template));
-            $twig = new Environment($loader, array('debug' => true, 'cache' => false));
+            $loader = new TwigArrayLoader(['index' => $template]);
+            $twig = new Environment($loader, ['debug' => true, 'cache' => false]);
             $twig->addExtension(new TranslationExtension(new Translator('en')));
 
             echo $twig->compile($twig->parse($twig->tokenize($twig->getLoader()->getSourceContext('index'))))."\n\n";
@@ -74,67 +74,67 @@ public function testTransChoiceComplexBody()
 
     public function getTransTests()
     {
-        return array(
+        return [
             // trans tag
-            array('{% trans %}Hello{% endtrans %}', 'Hello'),
-            array('{% trans %}%name%{% endtrans %}', 'Symfony', array('name' => 'Symfony')),
+            ['{% trans %}Hello{% endtrans %}', 'Hello'],
+            ['{% trans %}%name%{% endtrans %}', 'Symfony', ['name' => 'Symfony']],
 
-            array('{% trans from elsewhere %}Hello{% endtrans %}', 'Hello'),
+            ['{% trans from elsewhere %}Hello{% endtrans %}', 'Hello'],
 
-            array('{% trans %}Hello %name%{% endtrans %}', 'Hello Symfony', array('name' => 'Symfony')),
-            array('{% trans with { \'%name%\': \'Symfony\' } %}Hello %name%{% endtrans %}', 'Hello Symfony'),
-            array('{% set vars = { \'%name%\': \'Symfony\' } %}{% trans with vars %}Hello %name%{% endtrans %}', 'Hello Symfony'),
+            ['{% trans %}Hello %name%{% endtrans %}', 'Hello Symfony', ['name' => 'Symfony']],
+            ['{% trans with { \'%name%\': \'Symfony\' } %}Hello %name%{% endtrans %}', 'Hello Symfony'],
+            ['{% set vars = { \'%name%\': \'Symfony\' } %}{% trans with vars %}Hello %name%{% endtrans %}', 'Hello Symfony'],
 
-            array('{% trans into "fr"%}Hello{% endtrans %}', 'Hello'),
+            ['{% trans into "fr"%}Hello{% endtrans %}', 'Hello'],
 
             // transchoice
-            array(
+            [
                 '{% transchoice count from "messages" %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
                 'There is no apples',
-                array('count' => 0),
-            ),
-            array(
+                ['count' => 0],
+            ],
+            [
                 '{% transchoice count %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
                 'There is 5 apples',
-                array('count' => 5),
-            ),
-            array(
+                ['count' => 5],
+            ],
+            [
                 '{% transchoice count %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%){% endtranschoice %}',
                 'There is 5 apples (Symfony)',
-                array('count' => 5, 'name' => 'Symfony'),
-            ),
-            array(
+                ['count' => 5, 'name' => 'Symfony'],
+            ],
+            [
                 '{% transchoice count with { \'%name%\': \'Symfony\' } %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%){% endtranschoice %}',
                 'There is 5 apples (Symfony)',
-                array('count' => 5),
-            ),
-            array(
+                ['count' => 5],
+            ],
+            [
                 '{% transchoice count into "fr"%}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
                 'There is no apples',
-                array('count' => 0),
-            ),
-            array(
+                ['count' => 0],
+            ],
+            [
                 '{% transchoice 5 into "fr"%}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
                 'There is 5 apples',
-            ),
+            ],
 
             // trans filter
-            array('{{ "Hello"|trans }}', 'Hello'),
-            array('{{ name|trans }}', 'Symfony', array('name' => 'Symfony')),
-            array('{{ hello|trans({ \'%name%\': \'Symfony\' }) }}', 'Hello Symfony', array('hello' => 'Hello %name%')),
-            array('{% set vars = { \'%name%\': \'Symfony\' } %}{{ hello|trans(vars) }}', 'Hello Symfony', array('hello' => 'Hello %name%')),
-            array('{{ "Hello"|trans({}, "messages", "fr") }}', 'Hello'),
+            ['{{ "Hello"|trans }}', 'Hello'],
+            ['{{ name|trans }}', 'Symfony', ['name' => 'Symfony']],
+            ['{{ hello|trans({ \'%name%\': \'Symfony\' }) }}', 'Hello Symfony', ['hello' => 'Hello %name%']],
+            ['{% set vars = { \'%name%\': \'Symfony\' } %}{{ hello|trans(vars) }}', 'Hello Symfony', ['hello' => 'Hello %name%']],
+            ['{{ "Hello"|trans({}, "messages", "fr") }}', 'Hello'],
 
             // transchoice filter
-            array('{{ "{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples"|transchoice(count) }}', 'There is 5 apples', array('count' => 5)),
-            array('{{ text|transchoice(5, {\'%name%\': \'Symfony\'}) }}', 'There is 5 apples (Symfony)', array('text' => '{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%)')),
-            array('{{ "{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples"|transchoice(count, {}, "messages", "fr") }}', 'There is 5 apples', array('count' => 5)),
-        );
+            ['{{ "{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples"|transchoice(count) }}', 'There is 5 apples', ['count' => 5]],
+            ['{{ text|transchoice(5, {\'%name%\': \'Symfony\'}) }}', 'There is 5 apples (Symfony)', ['text' => '{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%)']],
+            ['{{ "{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples"|transchoice(count, {}, "messages", "fr") }}', 'There is 5 apples', ['count' => 5]],
+        ];
     }
 
     public function testDefaultTranslationDomain()
     {
-        $templates = array(
+        $templates = [
             'index' => '
                 {%- extends "base" %}
 
@@ -153,22 +153,22 @@ public function testDefaultTranslationDomain()
             'base' => '
                 {%- block content "" %}
             ',
-        );
+        ];
 
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (messages)'), 'en');
-        $translator->addResource('array', array('foo' => 'foo (custom)'), 'en', 'custom');
-        $translator->addResource('array', array('foo' => 'foo (foo)'), 'en', 'foo');
+        $translator->addResource('array', ['foo' => 'foo (messages)'], 'en');
+        $translator->addResource('array', ['foo' => 'foo (custom)'], 'en', 'custom');
+        $translator->addResource('array', ['foo' => 'foo (foo)'], 'en', 'foo');
 
         $template = $this->getTemplate($templates, $translator);
 
-        $this->assertEquals('foo (foo)foo (custom)foo (foo)foo (custom)foo (foo)foo (custom)', trim($template->render(array())));
+        $this->assertEquals('foo (foo)foo (custom)foo (foo)foo (custom)foo (foo)foo (custom)', trim($template->render([])));
     }
 
     public function testDefaultTranslationDomainWithNamedArguments()
     {
-        $templates = array(
+        $templates = [
             'index' => '
                 {%- trans_default_domain "foo" %}
 
@@ -186,18 +186,18 @@ public function testDefaultTranslationDomainWithNamedArguments()
             'base' => '
                 {%- block content "" %}
             ',
-        );
+        ];
 
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (messages)'), 'en');
-        $translator->addResource('array', array('foo' => 'foo (custom)'), 'en', 'custom');
-        $translator->addResource('array', array('foo' => 'foo (foo)'), 'en', 'foo');
-        $translator->addResource('array', array('foo' => 'foo (fr)'), 'fr', 'custom');
+        $translator->addResource('array', ['foo' => 'foo (messages)'], 'en');
+        $translator->addResource('array', ['foo' => 'foo (custom)'], 'en', 'custom');
+        $translator->addResource('array', ['foo' => 'foo (foo)'], 'en', 'foo');
+        $translator->addResource('array', ['foo' => 'foo (fr)'], 'fr', 'custom');
 
         $template = $this->getTemplate($templates, $translator);
 
-        $this->assertEquals('foo (custom)foo (foo)foo (custom)foo (custom)foo (fr)foo (custom)foo (fr)', trim($template->render(array())));
+        $this->assertEquals('foo (custom)foo (foo)foo (custom)foo (custom)foo (fr)foo (custom)foo (fr)', trim($template->render([])));
     }
 
     protected function getTemplate($template, $translator = null)
@@ -209,9 +209,9 @@ protected function getTemplate($template, $translator = null)
         if (\is_array($template)) {
             $loader = new TwigArrayLoader($template);
         } else {
-            $loader = new TwigArrayLoader(array('index' => $template));
+            $loader = new TwigArrayLoader(['index' => $template]);
         }
-        $twig = new Environment($loader, array('debug' => true, 'cache' => false));
+        $twig = new Environment($loader, ['debug' => true, 'cache' => false]);
         $twig->addExtension(new TranslationExtension($translator));
 
         return $twig->loadTemplate('index');
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/WebLinkExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/WebLinkExtensionTest.php
index 3424b58875fb..f49eea396d0d 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/WebLinkExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/WebLinkExtensionTest.php
@@ -44,49 +44,49 @@ protected function setUp()
 
     public function testLink()
     {
-        $this->assertEquals('/foo.css', $this->extension->link('/foo.css', 'preload', array('as' => 'style', 'nopush' => true)));
+        $this->assertEquals('/foo.css', $this->extension->link('/foo.css', 'preload', ['as' => 'style', 'nopush' => true]));
 
         $link = (new Link('preload', '/foo.css'))->withAttribute('as', 'style')->withAttribute('nopush', true);
-        $this->assertEquals(array($link), array_values($this->request->attributes->get('_links')->getLinks()));
+        $this->assertEquals([$link], array_values($this->request->attributes->get('_links')->getLinks()));
     }
 
     public function testPreload()
     {
-        $this->assertEquals('/foo.css', $this->extension->preload('/foo.css', array('as' => 'style', 'crossorigin' => true)));
+        $this->assertEquals('/foo.css', $this->extension->preload('/foo.css', ['as' => 'style', 'crossorigin' => true]));
 
         $link = (new Link('preload', '/foo.css'))->withAttribute('as', 'style')->withAttribute('crossorigin', true);
-        $this->assertEquals(array($link), array_values($this->request->attributes->get('_links')->getLinks()));
+        $this->assertEquals([$link], array_values($this->request->attributes->get('_links')->getLinks()));
     }
 
     public function testDnsPrefetch()
     {
-        $this->assertEquals('/foo.css', $this->extension->dnsPrefetch('/foo.css', array('as' => 'style', 'crossorigin' => true)));
+        $this->assertEquals('/foo.css', $this->extension->dnsPrefetch('/foo.css', ['as' => 'style', 'crossorigin' => true]));
 
         $link = (new Link('dns-prefetch', '/foo.css'))->withAttribute('as', 'style')->withAttribute('crossorigin', true);
-        $this->assertEquals(array($link), array_values($this->request->attributes->get('_links')->getLinks()));
+        $this->assertEquals([$link], array_values($this->request->attributes->get('_links')->getLinks()));
     }
 
     public function testPreconnect()
     {
-        $this->assertEquals('/foo.css', $this->extension->preconnect('/foo.css', array('as' => 'style', 'crossorigin' => true)));
+        $this->assertEquals('/foo.css', $this->extension->preconnect('/foo.css', ['as' => 'style', 'crossorigin' => true]));
 
         $link = (new Link('preconnect', '/foo.css'))->withAttribute('as', 'style')->withAttribute('crossorigin', true);
-        $this->assertEquals(array($link), array_values($this->request->attributes->get('_links')->getLinks()));
+        $this->assertEquals([$link], array_values($this->request->attributes->get('_links')->getLinks()));
     }
 
     public function testPrefetch()
     {
-        $this->assertEquals('/foo.css', $this->extension->prefetch('/foo.css', array('as' => 'style', 'crossorigin' => true)));
+        $this->assertEquals('/foo.css', $this->extension->prefetch('/foo.css', ['as' => 'style', 'crossorigin' => true]));
 
         $link = (new Link('prefetch', '/foo.css'))->withAttribute('as', 'style')->withAttribute('crossorigin', true);
-        $this->assertEquals(array($link), array_values($this->request->attributes->get('_links')->getLinks()));
+        $this->assertEquals([$link], array_values($this->request->attributes->get('_links')->getLinks()));
     }
 
     public function testPrerender()
     {
-        $this->assertEquals('/foo.css', $this->extension->prerender('/foo.css', array('as' => 'style', 'crossorigin' => true)));
+        $this->assertEquals('/foo.css', $this->extension->prerender('/foo.css', ['as' => 'style', 'crossorigin' => true]));
 
         $link = (new Link('prerender', '/foo.css'))->withAttribute('as', 'style')->withAttribute('crossorigin', true);
-        $this->assertEquals(array($link), array_values($this->request->attributes->get('_links')->getLinks()));
+        $this->assertEquals([$link], array_values($this->request->attributes->get('_links')->getLinks()));
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/WorkflowExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/WorkflowExtensionTest.php
index 2adf12d99ea8..20d78bfe3986 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/WorkflowExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/WorkflowExtensionTest.php
@@ -25,11 +25,11 @@ class WorkflowExtensionTest extends TestCase
 
     protected function setUp()
     {
-        $places = array('ordered', 'waiting_for_payment', 'processed');
-        $transitions = array(
+        $places = ['ordered', 'waiting_for_payment', 'processed'];
+        $transitions = [
             new Transition('t1', 'ordered', 'waiting_for_payment'),
             new Transition('t2', 'waiting_for_payment', 'processed'),
-        );
+        ];
         $definition = new Definition($places, $transitions);
         $workflow = new Workflow($definition);
 
@@ -42,7 +42,7 @@ protected function setUp()
     public function testCanTransition()
     {
         $subject = new \stdClass();
-        $subject->marking = array();
+        $subject->marking = [];
 
         $this->assertTrue($this->extension->canTransition($subject, 't1'));
         $this->assertFalse($this->extension->canTransition($subject, 't2'));
@@ -51,7 +51,7 @@ public function testCanTransition()
     public function testGetEnabledTransitions()
     {
         $subject = new \stdClass();
-        $subject->marking = array();
+        $subject->marking = [];
 
         $transitions = $this->extension->getEnabledTransitions($subject);
 
@@ -63,8 +63,8 @@ public function testGetEnabledTransitions()
     public function testHasMarkedPlace()
     {
         $subject = new \stdClass();
-        $subject->marking = array();
-        $subject->marking = array('ordered' => 1, 'waiting_for_payment' => 1);
+        $subject->marking = [];
+        $subject->marking = ['ordered' => 1, 'waiting_for_payment' => 1];
 
         $this->assertTrue($this->extension->hasMarkedPlace($subject, 'ordered'));
         $this->assertTrue($this->extension->hasMarkedPlace($subject, 'waiting_for_payment'));
@@ -74,10 +74,10 @@ public function testHasMarkedPlace()
     public function testGetMarkedPlaces()
     {
         $subject = new \stdClass();
-        $subject->marking = array();
-        $subject->marking = array('ordered' => 1, 'waiting_for_payment' => 1);
+        $subject->marking = [];
+        $subject->marking = ['ordered' => 1, 'waiting_for_payment' => 1];
 
-        $this->assertSame(array('ordered', 'waiting_for_payment'), $this->extension->getMarkedPlaces($subject));
+        $this->assertSame(['ordered', 'waiting_for_payment'], $this->extension->getMarkedPlaces($subject));
         $this->assertSame($subject->marking, $this->extension->getMarkedPlaces($subject, false));
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php
index a6108ba79e88..befc8341dde2 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/DumpNodeTest.php
@@ -70,9 +70,9 @@ public function testIndented()
 
     public function testOneVar()
     {
-        
10000
$vars = new Node(array(
+        $vars = new Node([
             new NameExpression('foo', 7),
-        ));
+        ]);
         $node = new DumpNode('bar', $vars, 7);
 
         $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock());
@@ -97,10 +97,10 @@ public function testOneVar()
 
     public function testMultiVars()
     {
-        $vars = new Node(array(
+        $vars = new Node([
             new NameExpression('foo', 7),
             new NameExpression('bar', 7),
-        ));
+        ]);
         $node = new DumpNode('bar', $vars, 7);
 
         $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock());
diff --git a/src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php
index 97056a771dbd..39d9f44be8c7 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/FormThemeTest.php
@@ -30,10 +30,10 @@ class FormThemeTest extends TestCase
     public function testConstructor()
     {
         $form = new NameExpression('form', 0);
-        $resources = new Node(array(
+        $resources = new Node([
             new ConstantExpression('tpl1', 0),
             new ConstantExpression('tpl2', 0),
-        ));
+        ]);
 
         $node = new FormThemeNode($form, $resources, 0);
 
@@ -45,12 +45,12 @@ public function testConstructor()
     public function testCompile()
     {
         $form = new NameExpression('form', 0);
-        $resources = new ArrayExpression(array(
+        $resources = new ArrayExpression([
             new ConstantExpression(0, 0),
             new ConstantExpression('tpl1', 0),
             new ConstantExpression(1, 0),
             new ConstantExpression('tpl2', 0),
-        ), 0);
+        ], 0);
 
         $node = new FormThemeNode($form, $resources, 0);
 
diff --git a/src/Symfony/Bridge/Twig/Tests/Node/SearchAndRenderBlockNodeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/SearchAndRenderBlockNodeTest.php
index d86c0ee38aae..db160b7c8a08 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/SearchAndRenderBlockNodeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/SearchAndRenderBlockNodeTest.php
@@ -25,9 +25,9 @@ class SearchAndRenderBlockNodeTest extends TestCase
 {
     public function testCompileWidget()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
-        ));
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_widget', $arguments, 0);
 
@@ -44,13 +44,13 @@ public function testCompileWidget()
 
     public function testCompileWidgetWithVariables()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
-            new ArrayExpression(array(
+            new ArrayExpression([
                 new ConstantExpression('foo', 0),
                 new ConstantExpression('bar', 0),
-            ), 0),
-        ));
+            ], 0),
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_widget', $arguments, 0);
 
@@ -67,10 +67,10 @@ public function testCompileWidgetWithVariables()
 
     public function testCompileLabelWithLabel()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
             new ConstantExpression('my label', 0),
-        ));
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
 
@@ -87,10 +87,10 @@ public function testCompileLabelWithLabel()
 
     public function testCompileLabelWithNullLabel()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
             new ConstantExpression(null, 0),
-        ));
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
 
@@ -109,10 +109,10 @@ public function testCompileLabelWithNullLabel()
 
     public function testCompileLabelWithEmptyStringLabel()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
             new ConstantExpression('', 0),
-        ));
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
 
@@ -131,9 +131,9 @@ public function testCompileLabelWithEmptyStringLabel()
 
     public function testCompileLabelWithDefaultLabel()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
-        ));
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
 
@@ -150,14 +150,14 @@ public function testCompileLabelWithDefaultLabel()
 
     public function testCompileLabelWithAttributes()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
             new ConstantExpression(null, 0),
-            new ArrayExpression(array(
+            new ArrayExpression([
                 new ConstantExpression('foo', 0),
                 new ConstantExpression('bar', 0),
-            ), 0),
-        ));
+            ], 0),
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
 
@@ -177,16 +177,16 @@ public function testCompileLabelWithAttributes()
 
     public function testCompileLabelWithLabelAndAttributes()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
             new ConstantExpression('value in argument', 0),
-            new ArrayExpression(array(
+            new ArrayExpression([
                 new ConstantExpression('foo', 0),
                 new ConstantExpression('bar', 0),
                 new ConstantExpression('label', 0),
                 new ConstantExpression('value in attributes', 0),
-            ), 0),
-        ));
+            ], 0),
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
 
@@ -203,7 +203,7 @@ public function testCompileLabelWithLabelAndAttributes()
 
     public function testCompileLabelWithLabelThatEvaluatesToNull()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
             new ConditionalExpression(
                 // if
@@ -214,7 +214,7 @@ public function testCompileLabelWithLabelThatEvaluatesToNull()
                 new ConstantExpression(null, 0),
                 0
             ),
-        ));
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
 
@@ -234,7 +234,7 @@ public function testCompileLabelWithLabelThatEvaluatesToNull()
 
     public function testCompileLabelWithLabelThatEvaluatesToNullAndAttributes()
     {
-        $arguments = new Node(array(
+        $arguments = new Node([
             new NameExpression('form', 0),
             new ConditionalExpression(
                 // if
@@ -245,13 +245,13 @@ public function testCompileLabelWithLabelThatEvaluatesToNullAndAttributes()
                 new ConstantExpression(null, 0),
                 0
             ),
-            new ArrayExpression(array(
+            new ArrayExpression([
                 new ConstantExpression('foo', 0),
                 new ConstantExpression('bar', 0),
                 new ConstantExpression('label', 0),
                 new ConstantExpression('value in attributes', 0),
-            ), 0),
-        ));
+            ], 0),
+        ]);
 
         $node = new SearchAndRenderBlockNode('form_label', $arguments, 0);
 
diff --git a/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php b/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
index 9fe08613765b..84a1ad8a938d 100644
--- a/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Node/TransNodeTest.php
@@ -29,7 +29,7 @@ public function testCompileStrict()
         $vars = new NameExpression('foo', 0);
         $node = new TransNode($body, null, null, $vars);
 
-        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array('strict_variables' => true));
+        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), ['strict_variables' => true]);
         $compiler = new Compiler($env);
 
         $this->assertEquals(
diff --git a/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TranslationDefaultDomainNodeVisitorTest.php b/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TranslationDefaultDomainNodeVisitorTest.php
index eb4c9a83e86d..5abfe1e92a6c 100644
--- a/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TranslationDefaultDomainNodeVisitorTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TranslationDefaultDomainNodeVisitorTest.php
@@ -26,7 +26,7 @@ class TranslationDefaultDomainNodeVisitorTest extends TestCase
     /** @dataProvider getDefaultDomainAssignmentTestData */
     public function testDefaultDomainAssignment(Node $node)
     {
-        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array('cache' => false, 'autoescape' => false, 'optimizations' => 0));
+        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), ['cache' => false, 'autoescape' => false, 'optimizations' => 0]);
         $visitor = new TranslationDefaultDomainNodeVisitor();
 
         // visit trans_default_domain tag
@@ -46,13 +46,13 @@ public function testDefaultDomainAssignment(Node $node)
         $visitor->enterNode($node, $env);
         $visitor->leaveNode($node, $env);
 
-        $this->assertEquals(array(array(self::$message, self::$domain)), $visitor->getMessages());
+        $this->assertEquals([[self::$message, self::$domain]], $visitor->getMessages());
     }
 
     /** @dataProvider getDefaultDomainAssignmentTestData */
     public function testNewModuleWithoutDefaultDomainTag(Node $node)
     {
-        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array('cache' => false, 'autoescape' => false, 'optimizations' => 0));
+        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), ['cache' => false, 'autoescape' => false, 'optimizations' => 0]);
         $visitor = new TranslationDefaultDomainNodeVisitor();
 
         // visit trans_default_domain tag
@@ -72,22 +72,22 @@ public function testNewModuleWithoutDefaultDomainTag(Node $node)
         $visitor->enterNode($node, $env);
         $visitor->leaveNode($node, $env);
 
-        $this->assertEquals(array(array(self::$message, null)), $visitor->getMessages());
+        $this->assertEquals([[self::$message, null]], $visitor->getMessages());
     }
 
     public function getDefaultDomainAssignmentTestData()
     {
-        return array(
-            array(TwigNodeProvider::getTransFilter(self::$message)),
-            array(TwigNodeProvider::getTransChoiceFilter(self::$message)),
-            array(TwigNodeProvider::getTransTag(self::$message)),
+        return [
+            [TwigNodeProvider::getTransFilter(self::$message)],
+            [TwigNodeProvider::getTransChoiceFilter(self::$message)],
+            [TwigNodeProvider::getTransTag(self::$message)],
             // with named arguments
-            array(TwigNodeProvider::getTransFilter(self::$message, null, array(
-                'arguments' => new ArrayExpression(array(), 0),
-            ))),
-            array(TwigNodeProvider::getTransChoiceFilter(self::$message), null, array(
-                'arguments' => new ArrayExpression(array(), 0),
-            )),
-        );
+            [TwigNodeProvider::getTransFilter(self::$message, null, [
+                'arguments' => new ArrayExpression([], 0),
+            ])],
+            [TwigNodeProvider::getTransChoiceFilter(self::$message), null, [
+                'arguments' => new ArrayExpression([], 0),
+            ]],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TranslationNodeVisitorTest.php b/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TranslationNodeVisitorTest.php
index 9c2d0ab9e40e..11d16e4cd674 100644
--- a/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TranslationNodeVisitorTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TranslationNodeVisitorTest.php
@@ -25,7 +25,7 @@ class TranslationNodeVisitorTest extends TestCase
     /** @dataProvider getMessagesExtractionTestData */
     public function testMessagesExtraction(Node $node, array $expectedMessages)
     {
-        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array('cache' => false, 'autoescape' => false, 'optimizations' => 0));
+        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), ['cache' => false, 'autoescape' => false, 'optimizations' => 0]);
         $visitor = new TranslationNodeVisitor();
         $visitor->enable();
         $visitor->enterNode($node, $env);
@@ -40,14 +40,14 @@ public function testMessageExtractionWithInvalidDomainNode()
         $node = new FilterExpression(
             new ConstantExpression($message, 0),
             new ConstantExpression('trans', 0),
-            new Node(array(
-                new ArrayExpression(array(), 0),
+            new Node([
+                new ArrayExpression([], 0),
                 new NameExpression('variable', 0),
-            )),
+            ]),
             0
         );
 
-        $this->testMessagesExtraction($node, array(array($message, TranslationNodeVisitor::UNDEFINED_DOMAIN)));
+        $this->testMessagesExtraction($node, [[$message, TranslationNodeVisitor::UNDEFINED_DOMAIN]]);
     }
 
     public function getMessagesExtractionTestData()
@@ -55,13 +55,13 @@ public function getMessagesExtractionTestData()
         $message = 'new key';
         $domain = 'domain';
 
-        return array(
-            array(TwigNodeProvider::getTransFilter($message), array(array($message, null))),
-            array(TwigNodeProvider::getTransChoiceFilter($message), array(array($message, null))),
-            array(TwigNodeProvider::getTransTag($message), array(array($message, null))),
-            array(TwigNodeProvider::getTransFilter($message, $domain), array(array($message, $domain))),
-            array(TwigNodeProvider::getTransChoiceFilter($message, $domain), array(array($message, $domain))),
-            array(TwigNodeProvider::getTransTag($message, $domain), array(array($message, $domain))),
-        );
+        return [
+            [TwigNodeProvider::getTransFilter($message), [[$message, null]]],
+            [TwigNodeProvider::getTransChoiceFilter($message), [[$message, null]]],
+            [TwigNodeProvider::getTransTag($message), [[$message, null]]],
+            [TwigNodeProvider::getTransFilter($message, $domain), [[$message, $domain]]],
+            [TwigNodeProvider::getTransChoiceFilter($message, $domain), [[$message, $domain]]],
+            [TwigNodeProvider::getTransTag($message, $domain), [[$message, $domain]]],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TwigNodeProvider.php b/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TwigNodeProvider.php
index 49eac23e8aed..514772467581 100644
--- a/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TwigNodeProvider.php
+++ b/src/Symfony/Bridge/Twig/Tests/NodeVisitor/TwigNodeProvider.php
@@ -28,9 +28,9 @@ public static function getModule($content)
         return new ModuleNode(
             new ConstantExpression($content, 0),
             null,
-            new ArrayExpression(array(), 0),
-            new ArrayExpression(array(), 0),
-            new ArrayExpression(array(), 0),
+            new ArrayExpression([], 0),
+            new ArrayExpression([], 0),
+            new ArrayExpression([], 0),
             null,
             new Source('', '')
         );
@@ -39,10 +39,10 @@ public static function getModule($content)
     public static function getTransFilter($message, $domain = null, $arguments = null)
     {
         if (!$arguments) {
-            $arguments = $domain ? array(
-                new ArrayExpression(array(), 0),
+            $arguments = $domain ? [
+                new ArrayExpression([], 0),
                 new ConstantExpression($domain, 0),
-            ) : array();
+            ] : [];
         }
 
         return new FilterExpression(
@@ -56,11 +56,11 @@ public static function getTransFilter($message, $domain = null, $arguments = nul
     public static function getTransChoiceFilter($message, $domain = null, $arguments = null)
     {
         if (!$arguments) {
-            $arguments = $domain ? array(
+            $arguments = $domain ? [
                 new ConstantExpression(0, 0),
-                new ArrayExpression(array(), 0),
+                new ArrayExpression([], 0),
                 new ConstantExpression($domain, 0),
-            ) : array();
+            ] : [];
         }
 
         return new FilterExpression(
@@ -74,7 +74,7 @@ public static function getTransChoiceFilter($message, $domain = null, $arguments
     public static function getTransTag($message, $domain = null)
     {
         return new TransNode(
-            new BodyNode(array(), array('data' => $message)),
+            new BodyNode([], ['data' => $message]),
             $domain ? new ConstantExpression($domain, 0) : null
         );
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/TokenParser/FormThemeTokenParserTest.php b/src/Symfony/Bridge/Twig/Tests/TokenParser/FormThemeTokenParserTest.php
index fc7af4f94de8..572685a6c4b3 100644
--- a/src/Symfony/Bridge/Twig/Tests/TokenParser/FormThemeTokenParserTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/TokenParser/FormThemeTokenParserTest.php
@@ -28,7 +28,7 @@ class FormThemeTokenParserTest extends TestCase
      */
     public function testCompile($source, $expected)
     {
-        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array('cache' => false, 'autoescape' => false, 'optimizations' => 0));
+        $env = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), ['cache' => false, 'autoescape' => false, 'optimizations' => 0]);
         $env->addTokenParser(new FormThemeTokenParser());
         $stream = $env->tokenize(new Source($source, ''));
         $parser = new Parser($env);
@@ -38,34 +38,34 @@ public function testCompile($source, $expected)
 
     public function getTestsForFormTheme()
     {
-        return array(
-            array(
+        return [
+            [
                 '{% form_theme form "tpl1" %}',
                 new FormThemeNode(
                     new NameExpression('form', 1),
-                    new ArrayExpression(array(
+                    new ArrayExpression([
                         new ConstantExpression(0, 1),
                         new ConstantExpression('tpl1', 1),
-                    ), 1),
+                    ], 1),
                     1,
                     'form_theme'
                 ),
-            ),
-            array(
+            ],
+            [
                 '{% form_theme form "tpl1" "tpl2" %}',
                 new FormThemeNode(
                     new NameExpression('form', 1),
-                    new ArrayExpression(array(
+                    new ArrayExpression([
                         new ConstantExpression(0, 1),
                         new ConstantExpression('tpl1', 1),
                         new ConstantExpression(1, 1),
                         new ConstantExpression('tpl2', 1),
-                    ), 1),
+                    ], 1),
                     1,
                     'form_theme'
                 ),
-            ),
-            array(
+            ],
+            [
                 '{% form_theme form with "tpl1" %}',
                 new FormThemeNode(
                     new NameExpression('form', 1),
@@ -73,48 +73,48 @@ public function getTestsForFormTheme()
                     1,
                     'form_theme'
                 ),
-            ),
-            array(
+            ],
+            [
                 '{% form_theme form with ["tpl1"] %}',
                 new FormThemeNode(
                     new NameExpression('form', 1),
-                    new ArrayExpression(array(
+                    new ArrayExpression([
                         new ConstantExpression(0, 1),
                         new ConstantExpression('tpl1', 1),
-                    ), 1),
+                    ], 1),
                     1,
                     'form_theme'
                 ),
-            ),
-            array(
+            ],
+            [
                 '{% form_theme form with ["tpl1", "tpl2"] %}',
                 new FormThemeNode(
                     new NameExpression('form', 1),
-                    new ArrayExpression(array(
+                    new ArrayExpression([
                         new ConstantExpression(0, 1),
                         new ConstantExpression('tpl1', 1),
                         new ConstantExpression(1, 1),
                         new ConstantExpression('tpl2', 1),
-                    ), 1),
+                    ], 1),
                     1,
                     'form_theme'
                 ),
-            ),
-            array(
+            ],
+            [
                 '{% form_theme form with ["tpl1", "tpl2"] only %}',
                 new FormThemeNode(
                     new NameExpression('form', 1),
-                    new ArrayExpression(array(
+                    new ArrayExpression([
                         new ConstantExpression(0, 1),
                         new ConstantExpression('tpl1', 1),
                         new ConstantExpression(1, 1),
                         new ConstantExpression('tpl2', 1),
-                    ), 1),
+                    ], 1),
                     1,
                     'form_theme',
                     true
                 ),
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Translation/TwigExtractorTest.php b/src/Symfony/Bridge/Twig/Tests/Translation/TwigExtractorTest.php
index 8e5c84bbc987..5dd5bb79d77b 100644
--- a/src/Symfony/Bridge/Twig/Tests/Translation/TwigExtractorTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Translation/TwigExtractorTest.php
@@ -27,12 +27,12 @@ class TwigExtractorTest extends TestCase
     public function testExtract($template, $messages)
     {
         $loader = $this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock();
-        $twig = new Environment($loader, array(
+        $twig = new Environment($loader, [
             'strict_variables' => true,
             'debug' => true,
             'cache' => false,
             'autoescape' => false,
-        ));
+        ]);
         $twig->addExtension(new TranslationExtension($this->getMockBuilder('Symfony\Component\Translation\TranslatorInterface')->getMock()));
 
         $extractor = new TwigExtractor($twig);
@@ -51,28 +51,28 @@ public function testExtract($template, $messages)
 
     public function getExtractData()
     {
-        return array(
-            array('{{ "new key" | trans() }}', array('new key' => 'messages')),
-            array('{{ "new key" | trans() | upper }}', array('new key' => 'messages')),
-            array('{{ "new key" | trans({}, "domain") }}', array('new key' => 'domain')),
-            array('{{ "new key" | transchoice(1) }}', array('new key' => 'messages')),
-            array('{{ "new key" | transchoice(1) | upper }}', array('new key' => 'messages')),
-            array('{{ "new key" | transchoice(1, {}, "domain") }}', array('new key' => 'domain')),
-            array('{% trans %}new key{% endtrans %}', array('new key' => 'messages')),
-            array('{% trans %}  new key  {% endtrans %}', array('new key' => 'messages')),
-            array('{% trans from "domain" %}new key{% endtrans %}', array('new key' => 'domain')),
-            array('{% set foo = "new key" | trans %}', array('new key' => 'messages')),
-            array('{{ 1 ? "new key" | trans : "another key" | trans }}', array('new key' => 'messages', 'another key' => 'messages')),
+        return [
+            ['{{ "new key" | trans() }}', ['new key' => 'messages']],
+            ['{{ "new key" | trans() | upper }}', ['new key' => 'messages']],
+            ['{{ "new key" | trans({}, "domain") }}', ['new key' => 'domain']],
+            ['{{ "new key" | transchoice(1) }}', ['new key' => 'messages']],
+            ['{{ "new key" | transchoice(1) | upper }}', ['new key' => 'messages']],
+            ['{{ "new key" | transchoice(1, {}, "domain") }}', ['new key' => 'domain']],
+            ['{% trans %}new key{% endtrans %}', ['new key' => 'messages']],
+            ['{% trans %}  new key  {% endtrans %}', ['new key' => 'messages']],
+            ['{% trans from "domain" %}new key{% endtrans %}', ['new key' => 'domain']],
+            ['{% set foo = "new key" | trans %}', ['new key' => 'messages']],
+            ['{{ 1 ? "new key" | trans : "another key" | trans }}', ['new key' => 'messages', 'another key' => 'messages']],
 
             // make sure 'trans_default_domain' tag is supported
-            array('{% trans_default_domain "domain" %}{{ "new key"|trans }}', array('new key' => 'domain')),
-            array('{% trans_default_domain "domain" %}{{ "new key"|transchoice }}', array('new key' => 'domain')),
-            array('{% trans_default_domain "domain" %}{% trans %}new key{% endtrans %}', array('new key' => 'domain')),
+            ['{% trans_default_domain "domain" %}{{ "new key"|trans }}', ['new key' => 'domain']],
+            ['{% trans_default_domain "domain" %}{{ "new key"|transchoice }}', ['new key' => 'domain']],
+            ['{% trans_default_domain "domain" %}{% trans %}new key{% endtrans %}', ['new key' => 'domain']],
 
             // make sure this works with twig's named arguments
-            array('{{ "new key" | trans(domain="domain") }}', array('new key' => 'domain')),
-            array('{{ "new key" | transchoice(domain="domain", count=1) }}', array('new key' => 'domain')),
-        );
+            ['{{ "new key" | trans(domain="domain") }}', ['new key' => 'domain']],
+            ['{{ "new key" | transchoice(domain="domain", count=1) }}', ['new key' => 'domain']],
+        ];
     }
 
     /**
@@ -105,11 +105,11 @@ public function testExtractSyntaxError($resources)
      */
     public function resourcesWithSyntaxErrorsProvider()
     {
-        return array(
-            array(__DIR__.'/../Fixtures'),
-            array(__DIR__.'/../Fixtures/extractor/syntax_error.twig'),
-            array(new \SplFileInfo(__DIR__.'/../Fixtures/extractor/syntax_error.twig')),
-        );
+        return [
+            [__DIR__.'/../Fixtures'],
+            [__DIR__.'/../Fixtures/extractor/syntax_error.twig'],
+            [new \SplFileInfo(__DIR__.'/../Fixtures/extractor/syntax_error.twig')],
+        ];
     }
 
     /**
@@ -117,13 +117,13 @@ public function resourcesWithSyntaxErrorsProvider()
      */
     public function testExtractWithFiles($resource)
     {
-        $loader = new ArrayLoader(array());
-        $twig = new Environment($loader, array(
+        $loader = new ArrayLoader([]);
+        $twig = new Environment($loader, [
             'strict_variables' => true,
             'debug' => true,
             'cache' => false,
             'autoescape' => false,
-        ));
+        ]);
         $twig->addExtension(new TranslationExtension($this->getMockBuilder('Symfony\Component\Translation\TranslatorInterface')->getMock()));
 
         $extractor = new TwigExtractor($twig);
@@ -141,12 +141,12 @@ public function resourceProvider()
     {
         $directory = __DIR__.'/../Fixtures/extractor/';
 
-        return array(
-            array($directory.'with_translations.html.twig'),
-            array(array($directory.'with_translations.html.twig')),
-            array(array(new \SplFileInfo($directory.'with_translations.html.twig'))),
-            array(new \ArrayObject(array($directory.'with_translations.html.twig'))),
-            array(new \ArrayObject(array(new \SplFileInfo($directory.'with_translations.html.twig')))),
-        );
+        return [
+            [$directory.'with_translations.html.twig'],
+            [[$directory.'with_translations.html.twig']],
+            [[new \SplFileInfo($directory.'with_translations.html.twig')]],
+            [new \ArrayObject([$directory.'with_translations.html.twig'])],
+            [new \ArrayObject([new \SplFileInfo($directory.'with_translations.html.twig')])],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/TwigEngineTest.php b/src/Symfony/Bridge/Twig/Tests/TwigEngineTest.php
index a74c59e8d28c..ab932eebc3dc 100644
--- a/src/Symfony/Bridge/Twig/Tests/TwigEngineTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/TwigEngineTest.php
@@ -23,7 +23,7 @@ public function testExistsWithTemplateInstances()
     {
         $engine = $this->getTwig();
 
-        $this->assertTrue($engine->exists($this->getMockForAbstractClass('Twig\Template', array(), '', false)));
+        $this->assertTrue($engine->exists($this->getMockForAbstractClass('Twig\Template', [], '', false)));
     }
 
     public function testExistsWithNonExistentTemplates()
@@ -70,10 +70,10 @@ public function testRenderWithError()
 
     protected function getTwig()
     {
-        $twig = new Environment(new ArrayLoader(array(
+        $twig = new Environment(new ArrayLoader([
             'index' => 'foo',
             'error' => '{{ foo }',
-        )));
+        ]));
         $parser = $this->getMockBuilder('Symfony\Component\Templating\TemplateNameParserInterface')->getMock();
 
         return new TwigEngine($twig, $parser);
diff --git a/src/Symfony/Bridge/Twig/TokenParser/FormThemeTokenParser.php b/src/Symfony/Bridge/Twig/TokenParser/FormThemeTokenParser.php
index 2388cc56623b..ffef9e985927 100644
--- a/src/Symfony/Bridge/Twig/TokenParser/FormThemeTokenParser.php
+++ b/src/Symfony/Bridge/Twig/TokenParser/FormThemeTokenParser.php
@@ -45,7 +45,7 @@ public function parse(Token $token)
                 $only = true;
             }
         } else {
-            $resources = new ArrayExpression(array(), $stream->getCurrent()->getLine());
+            $resources = new ArrayExpression([], $stream->getCurrent()->getLine());
             do {
                 $resources->addElement($this->parser->getExpressionParser()->parseExpression());
             } while (!$stream->test(Token::BLOCK_END_TYPE));
diff --git a/src/Symfony/Bridge/Twig/TokenParser/StopwatchTokenParser.php b/src/Symfony/Bridge/Twig/TokenParser/StopwatchTokenParser.php
index 82c58d40bbf8..4cf4ffcd7e9c 100644
--- a/src/Symfony/Bridge/Twig/TokenParser/StopwatchTokenParser.php
+++ b/src/Symfony/Bridge/Twig/TokenParser/StopwatchTokenParser.php
@@ -41,7 +41,7 @@ public function parse(Token $token)
         $stream->expect(Token::BLOCK_END_TYPE);
 
         // {% endstopwatch %}
-        $body = $this->parser->subparse(array($this, 'decideStopwatchEnd'), true);
+        $body = $this->parser->subparse([$this, 'decideStopwatchEnd'], true);
         $stream->expect(Token::BLOCK_END_TYPE);
 
         if ($this->stopwatchIsAvailable) {
diff --git a/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php b/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
index 1cda1dcb3c1b..7b673856f0b0 100644
--- a/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
+++ b/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
@@ -38,7 +38,7 @@ public function parse(Token $token)
         $lineno = $token->getLine();
         $stream = $this->parser->getStream();
 
-        $vars = new ArrayExpression(array(), $lineno);
+        $vars = new ArrayExpression([], $lineno);
 
         $count = $this->parser->getExpressionParser()->parseExpression();
 
@@ -65,7 +65,7 @@ public function parse(Token $token)
 
         $stream->expect(Token::BLOCK_END_TYPE);
 
-        $body = $this->parser->subparse(array($this, 'decideTransChoiceFork'), true);
+        $body = $this->parser->subparse([$this, 'decideTransChoiceFork'], true);
 
         if (!$body instanceof TextNode && !$body instanceof AbstractExpression) {
             throw new SyntaxError('A message inside a transchoice tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext());
@@ -78,7 +78,7 @@ public function parse(Token $token)
 
     public function decideTransChoiceFork($token)
     {
-        return $token->test(array('endtranschoice'));
+        return $token->test(['endtranschoice']);
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php b/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
index 5fe2255fcd68..ca2dae16182c 100644
--- a/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
+++ b/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
@@ -39,7 +39,7 @@ public function parse(Token $token)
         $lineno = $token->getLine();
         $stream = $this->parser->getStream();
 
-        $vars = new ArrayExpression(array(), $lineno);
+        $vars = new ArrayExpression([], $lineno);
         $domain = null;
         $locale = null;
         if (!$stream->test(Token::BLOCK_END_TYPE)) {
@@ -66,7 +66,7 @@ public function parse(Token $token)
 
         // {% trans %}message{% endtrans %}
         $stream->expect(Token::BLOCK_END_TYPE);
-        $body = $this->parser->subparse(array($this, 'decideTransFork'), true);
+        $body = $this->parser->subparse([$this, 'decideTransFork'], true);
 
         if (!$body instanceof TextNode && !$body instanceof AbstractExpression) {
             throw new SyntaxError('A message inside a trans tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext());
@@ -79,7 +79,7 @@ public function parse(Token $token)
 
     public function decideTransFork($token)
     {
-        return $token->test(array('endtrans'));
+        return $token->test(['endtrans']);
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/TwigEngine.php b/src/Symfony/Bridge/Twig/TwigEngine.php
index bc0a4fecc9af..4789f3f4d60b 100644
--- a/src/Symfony/Bridge/Twig/TwigEngine.php
+++ b/src/Symfony/Bridge/Twig/TwigEngine.php
@@ -44,7 +44,7 @@ public function __construct(Environment $environment, TemplateNameParserInterfac
      *
      * @throws Error if something went wrong like a thrown exception while rendering the template
      */
-    public function render($name, array $parameters = array())
+    public function render($name, array $parameters = [])
     {
         return $this->load($name)->render($parameters);
     }
@@ -56,7 +56,7 @@ public function render($name, array $parameters = array())
      *
      * @throws Error if something went wrong like a thrown exception while rendering the template
      */
-    public function stream($name, array $parameters = array())
+    public function stream($name, array $parameters = [])
     {
         $this->load($name)->display($parameters);
     }
diff --git a/src/Symfony/Bridge/Twig/UndefinedCallableHandler.php b/src/Symfony/Bridge/Twig/UndefinedCallableHandler.php
index c81d1cac7d3d..8476e89cab0e 100644
--- a/src/Symfony/Bridge/Twig/UndefinedCallableHandler.php
+++ b/src/Symfony/Bridge/Twig/UndefinedCallableHandler.php
@@ -19,15 +19,15 @@
  */
 class UndefinedCallableHandler
 {
-    private static $filterComponents = array(
+    private static $filterComponents = [
         'humanize' => 'form',
         'trans' => 'translation',
         'transchoice' => 'translation',
         'yaml_encode' => 'yaml',
         'yaml_dump' => 'yaml',
-    );
+    ];
 
-    private static $functionComponents = array(
+    private static $functionComponents = [
         'asset' => 'asset',
         'asset_version' => 'asset',
         'dump' => 'debug-bundle',
@@ -54,15 +54,15 @@ class UndefinedCallableHandler
         'workflow_transitions' => 'workflow',
         'workflow_has_marked_place' => 'workflow',
         'workflow_marked_places' => 'workflow',
-    );
+    ];
 
-    private static $fullStackEnable = array(
+    private static $fullStackEnable = [
         'form' => 'enable "framework.form"',
         'security-core' => 'add the "SecurityBundle"',
         'security-http' => 'add the "SecurityBundle"',
         'web-link' => 'enable "framework.web_link"',
         'workflow' => 'enable "framework.workflows"',
-    );
+    ];
 
     public static function onUndefinedFilter($name)
     {
diff --git a/src/Symfony/Bundle/DebugBundle/DependencyInjection/DebugExtension.php b/src/Symfony/Bundle/DebugBundle/DependencyInjection/DebugExtension.php
index d7c0ee728746..59cd3343ab9a 100644
--- a/src/Symfony/Bundle/DebugBundle/DependencyInjection/DebugExtension.php
+++ b/src/Symfony/Bundle/DebugBundle/DependencyInjection/DebugExtension.php
@@ -39,9 +39,9 @@ public function load(array $configs, ContainerBuilder $container)
         $container->getDefinition('var_dumper.cli_dumper')->setPrivate(true);
 
         $container->getDefinition('var_dumper.cloner')
-            ->addMethodCall('setMaxItems', array($config['max_items']))
-            ->addMethodCall('setMinDepth', array($config['min_depth']))
-            ->addMethodCall('setMaxString', array($config['max_string_length']));
+            ->addMethodCall('setMaxItems', [$config['max_items']])
+            ->addMethodCall('setMinDepth', [$config['min_depth']])
+            ->addMethodCall('setMaxString', [$config['max_string_length']]);
 
         if (null !== $config['dump_destination']) {
             $container->getDefinition('var_dumper.cli_dumper')
diff --git a/src/Symfony/Bundle/DebugBundle/Tests/DependencyInjection/Compiler/DumpDataCollectorPassTest.php b/src/Symfony/Bundle/DebugBundle/Tests/DependencyInjection/Compiler/DumpDataCollectorPassTest.php
index 6f49c021260e..0b518ee00f71 100644
--- a/src/Symfony/Bundle/DebugBundle/Tests/DependencyInjection/Compiler/DumpDataCollectorPassTest.php
+++ b/src/Symfony/Bundle/DebugBundle/Tests/DependencyInjection/Compiler/DumpDataCollectorPassTest.php
@@ -25,7 +25,7 @@ public function testProcessWithoutFileLinkFormatParameter()
         $container = new ContainerBuilder();
         $container->addCompilerPass(new DumpDataCollectorPass());
 
-        $definition = new Definition('Symfony\Component\HttpKernel\DataCollector\DumpDataCollector', array(null, null, null, null));
+        $definition = new Definition('Symfony\Component\HttpKernel\DataCollector\DumpDataCollector', [null, null, null, null]);
         $container->setDefinition('data_collector.dump', $definition);
 
         $container->compile();
@@ -39,7 +39,7 @@ public function testProcessWithToolbarEnabled()
         $container->addCompilerPass(new DumpDataCollectorPass());
         $requestStack = new RequestStack();
 
-        $definition = new Definition('Symfony\Component\HttpKernel\DataCollector\DumpDataCollector', array(null, null, null, $requestStack));
+        $definition = new Definition('Symfony\Component\HttpKernel\DataCollector\DumpDataCollector', [null, null, null, $requestStack]);
         $container->setDefinition('data_collector.dump', $definition);
         $container->setParameter('web_profiler.debug_toolbar.mode', WebDebugToolbarListener::ENABLED);
 
@@ -53,7 +53,7 @@ public function testProcessWithToolbarDisabled()
         $container = new ContainerBuilder();
         $container->addCompilerPass(new DumpDataCollectorPass());
 
-        $definition = new Definition('Symfony\Component\HttpKernel\DataCollector\DumpDataCollector', array(null, null, null, new RequestStack()));
+        $definition = new Definition('Symfony\Component\HttpKernel\DataCollector\DumpDataCollector', [null, null, null, new RequestStack()]);
         $container->setDefinition('data_collector.dump', $definition);
         $container->setParameter('web_profiler.debug_toolbar.mode', WebDebugToolbarListener::DISABLED);
 
@@ -67,7 +67,7 @@ public function testProcessWithoutToolbar()
         $container = new ContainerBuilder();
         $container->addCompilerPass(new DumpDataCollectorPass());
 
-        $definition = new Definition('Symfony\Component\HttpKernel\DataCollector\DumpDataCollector', array(null, null, null, new RequestStack()));
+        $definition = new Definition('Symfony\Component\HttpKernel\DataCollector\DumpDataCollector', [null, null, null, new RequestStack()]);
         $container->setDefinition('data_collector.dump', $definition);
 
         $container->compile();
diff --git a/src/Symfony/Bundle/DebugBundle/Tests/DependencyInjection/DebugExtensionTest.php b/src/Symfony/Bundle/DebugBundle/Tests/DependencyInjection/DebugExtensionTest.php
index 0c285a02ac18..cd6084c5e3bc 100644
--- a/src/Symfony/Bundle/DebugBundle/Tests/DependencyInjection/DebugExtensionTest.php
+++ b/src/Symfony/Bundle/DebugBundle/Tests/DependencyInjection/DebugExtensionTest.php
@@ -22,36 +22,36 @@ public function testLoadWithoutConfiguration()
     {
         $container = $this->createContainer();
         $container->registerExtension(new DebugExtension());
-        $container->loadFromExtension('debug', array());
+        $container->loadFromExtension('debug', []);
         $this->compileContainer($container);
 
-        $expectedTags = array(
-            array(
+        $expectedTags = [
+            [
                 'id' => 'dump',
                 'template' => '@Debug/Profiler/dump.html.twig',
                 'priority' => 240,
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expectedTags, $container->getDefinition('data_collector.dump')->getTag('data_collector'));
     }
 
     private function createContainer()
     {
-        $container = new ContainerBuilder(new ParameterBag(array(
+        $container = new ContainerBuilder(new ParameterBag([
             'kernel.cache_dir' => __DIR__,
             'kernel.charset' => 'UTF-8',
             'kernel.debug' => true,
-            'kernel.bundles' => array('DebugBundle' => 'Symfony\\Bundle\\DebugBundle\\DebugBundle'),
-        )));
+            'kernel.bundles' => ['DebugBundle' => 'Symfony\\Bundle\\DebugBundle\\DebugBundle'],
+        ]));
 
         return $container;
     }
 
     private function compileContainer(ContainerBuilder $container)
     {
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/AbstractPhpFileCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/AbstractPhpFileCacheWarmer.php
index 25801a7829c9..43cbb7968a8a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/AbstractPhpFileCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/AbstractPhpFileCacheWarmer.php
@@ -54,13 +54,13 @@ public function warmUp($cacheDir)
     {
         $arrayAdapter = new ArrayAdapter();
 
-        spl_autoload_register(array(PhpArrayAdapter::class, 'throwOnRequiredClass'));
+        spl_autoload_register([PhpArrayAdapter::class, 'throwOnRequiredClass']);
         try {
             if (!$this->doWarmUp($cacheDir, $arrayAdapter)) {
                 return;
             }
         } finally {
-            spl_autoload_unregister(array(PhpArrayAdapter::class, 'throwOnRequiredClass'));
+            spl_autoload_unregister([PhpArrayAdapter::class, 'throwOnRequiredClass']);
         }
 
         // the ArrayAdapter stores the values serialized
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
index 795fdbfc514a..e3ef1f0553eb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
@@ -71,8 +71,8 @@ public function isOptional()
      */
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             'router' => RouterInterface::class,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/SerializerCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/SerializerCacheWarmer.php
index 22d2bcfe9cf5..917ea47235fd 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/SerializerCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/SerializerCacheWarmer.php
@@ -74,7 +74,7 @@ protected function doWarmUp($cacheDir, ArrayAdapter $arrayAdapter)
      */
     private function extractSupportedLoaders(array $loaders)
     {
-        $supportedLoaders = array();
+        $supportedLoaders = [];
 
         foreach ($loaders as $loader) {
             if ($loader instanceof XmlFileLoader || $loader instanceof YamlFileLoader) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TemplateFinder.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TemplateFinder.php
index 4ceca5c6be86..e3eea295e64e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TemplateFinder.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TemplateFinder.php
@@ -52,7 +52,7 @@ public function findAllTemplates()
             return $this->templates;
         }
 
-        $templates = array();
+        $templates = [];
 
         foreach ($this->kernel->getBundles() as $bundle) {
             $templates = array_merge($templates, $this->findTemplatesInBundle($bundle));
@@ -72,7 +72,7 @@ public function findAllTemplates()
      */
     private function findTemplatesInFolder($dir)
     {
-        $templates = array();
+        $templates = [];
 
         if (is_dir($dir)) {
             $finder = new Finder();
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TemplatePathsCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TemplatePathsCacheWarmer.php
index 523d7ecce0af..6662a1808d5e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TemplatePathsCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TemplatePathsCacheWarmer.php
@@ -39,7 +39,7 @@ public function __construct(TemplateFinderInterface $finder, TemplateLocator $lo
     public function warmUp($cacheDir)
     {
         $filesystem = new Filesystem();
-        $templates = array();
+        $templates = [];
 
         foreach ($this->finder->findAllTemplates() as $template) {
             $templates[$template->getLogicalName()] = rtrim($filesystem->makePathRelative($this->locator->locate($template), $cacheDir), '/');
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TranslationsCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TranslationsCacheWarmer.php
index 7d9ec9f9d45c..b4439eff48d8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TranslationsCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TranslationsCacheWarmer.php
@@ -72,8 +72,8 @@ public function isOptional()
      */
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             'translator' => TranslatorInterface::class,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ValidatorCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ValidatorCacheWarmer.php
index 2fb4ace86401..8ac38133c06e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ValidatorCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ValidatorCacheWarmer.php
@@ -85,7 +85,7 @@ protected function warmUpPhpArrayAdapter(PhpArrayAdapter $phpArrayAdapter, array
      */
     private function extractSupportedLoaders(array $loaders)
     {
-        $supportedLoaders = array();
+        $supportedLoaders = [];
 
         foreach ($loaders as $loader) {
             if ($loader instanceof XmlFileLoader || $loader instanceof YamlFileLoader) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Client.php b/src/Symfony/Bundle/FrameworkBundle/Client.php
index c86a2772eb3c..6473f97584f3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Client.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Client.php
@@ -34,7 +34,7 @@ class Client extends BaseClient
     /**
      * {@inheritdoc}
      */
-    public function __construct(KernelInterface $kernel, array $server = array(), History $history = null, CookieJar $cookieJar = null)
+    public function __construct(KernelInterface $kernel, array $server = [], History $history = null, CookieJar $cookieJar = null)
     {
         parent::__construct($kernel, $server, $history, $cookieJar);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
index c7016c4ba3dd..ad1590edf6bb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
@@ -60,46 +60,46 @@ protected function execute(InputInterface $input, OutputInterface $output)
         /** @var $kernel KernelInterface */
         $kernel = $this->getApplication()->getKernel();
 
-        $rows = array(
-            array('<info>Symfony</>'),
+        $rows = [
+            ['<info>Symfony</>'],
             new TableSeparator(),
-            array('Version', Kernel::VERSION),
-            array('End of maintenance', Kernel::END_OF_MAINTENANCE.(self::isExpired(Kernel::END_OF_MAINTENANCE) ? ' <error>Expired</>' : '')),
-            array('End of life', Kernel::END_OF_LIFE.(self::isExpired(Kernel::END_OF_LIFE) ? ' <error>Expired</>' : '')),
+            ['Version', Kernel::VERSION],
+            ['End of maintenance', Kernel::END_OF_MAINTENANCE.(self::isExpired(Kernel::END_OF_MAINTENANCE) ? ' <error>Expired</>' : '')],
+            ['End of life', Kernel::END_OF_LIFE.(self::isExpired(Kernel::END_OF_LIFE) ? ' <error>Expired</>' : '')],
             new TableSeparator(),
-            array('<info>Kernel</>'),
+            ['<info>Kernel</>'],
             new TableSeparator(),
-            array('Type', \get_class($kernel)),
-            array('Name', $kernel->getName()),
-            array('Environment', $kernel->getEnvironment()),
-            array('Debug', $kernel->isDebug() ? 'true' : 'false'),
-            array('Charset', $kernel->getCharset()),
-            array('Root directory', self::formatPath($kernel->getRootDir(), $kernel->getProjectDir())),
-            array('Cache directory', self::formatPath($kernel->getCacheDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getCacheDir()).'</>)'),
-            array('Log directory', self::formatPath($kernel->getLogDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getLogDir()).'</>)'),
+            ['Type', \get_class($kernel)],
+            ['Name', $kernel->getName()],
+            ['Environment', $kernel->getEnvironment()],
+            ['Debug', $kernel->isDebug() ? 'true' : 'false'],
+            ['Charset', $kernel->getCharset()],
+            ['Root directory', self::formatPath($kernel->getRootDir(), $kernel->getProjectDir())],
+            ['Cache directory', self::formatPath($kernel->getCacheDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getCacheDir()).'</>)'],
+            ['Log directory', self::formatPath($kernel->getLogDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getLogDir()).'</>)'],
             new TableSeparator(),
-            array('<info>PHP</>'),
+            ['<info>PHP</>'],
             new TableSeparator(),
-            array('Version', PHP_VERSION),
-            array('Architecture', (PHP_INT_SIZE * 8).' bits'),
-            array('Intl locale', class_exists('Locale', false) && \Locale::getDefault() ? \Locale::getDefault() : 'n/a'),
-            array('Timezone', date_default_timezone_get().' (<comment>'.(new \DateTime())->format(\DateTime::W3C).'</>)'),
-            array('OPcache', \extension_loaded('Zend OPcache') && filter_var(ini_get('opcache.enable'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'),
-            array('APCu', \extension_loaded('apcu') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'),
-            array('Xdebug', \extension_loaded('xdebug') ? 'true' : 'false'),
-        );
+            ['Version', PHP_VERSION],
+            ['Architecture', (PHP_INT_SIZE * 8).' bits'],
+            ['Intl locale', class_exists('Locale', false) && \Locale::getDefault() ? \Locale::getDefault() : 'n/a'],
+            ['Timezone', date_default_timezone_get().' (<comment>'.(new \DateTime())->format(\DateTime::W3C).'</>)'],
+            ['OPcache', \extension_loaded('Zend OPcache') && filter_var(ini_get('opcache.enable'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'],
+            ['APCu', \extension_loaded('apcu') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'],
+            ['Xdebug', \extension_loaded('xdebug') ? 'true' : 'false'],
+        ];
 
         if ($dotenv = self::getDotenvVars()) {
-            $rows = array_merge($rows, array(
+            $rows = array_merge($rows, [
                 new TableSeparator(),
-                array('<info>Environment (.env)</>'),
+                ['<info>Environment (.env)</>'],
                 new TableSeparator(),
-            ), array_map(function ($value, $name) {
-                return array($name, $value);
+            ], array_map(function ($value, $name) {
+                return [$name, $value];
             }, $dotenv, array_keys($dotenv)));
         }
 
-        $io->table(array(), $rows);
+        $io->table([], $rows);
     }
 
     private static function formatPath($path, $baseDir = null)
@@ -130,7 +130,7 @@ private static function isExpired($date)
 
     private static function getDotenvVars()
     {
-        $vars = array();
+        $vars = [];
         foreach (explode(',', getenv('SYMFONY_DOTENV_VARS')) as $name) {
             if ('' !== $name && false !== $value = getenv($name)) {
                 $vars[$name] = $value;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/AbstractConfigCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/AbstractConfigCommand.php
index 6d8960cd031e..cc1b858abb33 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/AbstractConfigCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/AbstractConfigCommand.php
@@ -29,8 +29,8 @@ abstract class AbstractConfigCommand extends ContainerDebugCommand
     protected function listBundles($output)
     {
         $title = 'Available registered bundles with their extension alias if available';
-        $headers = array('Bundle name', 'Extension alias');
-        $rows = array();
+        $headers = ['Bundle name', 'Extension alias'];
+        $rows = [];
 
         $bundles = $this->getApplication()->getKernel()->getBundles();
         usort($bundles, function ($bundleA, $bundleB) {
@@ -39,7 +39,7 @@ protected function listBundles($output)
 
         foreach ($bundles as $bundle) {
             $extension = $bundle->getContainerExtension();
-            $rows[] = array($bundle->getName(), $extension ? $extension->getAlias() : '');
+            $rows[] = [$bundle->getName(), $extension ? $extension->getAlias() : ''];
         }
 
         if ($output instanceof StyleInterface) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/AssetsInstallCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/AssetsInstallCommand.php
index 3e5800f9dacb..aee869f8fd93 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/AssetsInstallCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/AssetsInstallCommand.php
@@ -65,9 +65,9 @@ public function __construct($filesystem = null)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('target', InputArgument::OPTIONAL, 'The target directory', null),
-            ))
+            ])
             ->addOption('symlink', null, InputOption::VALUE_NONE, 'Symlinks the assets instead of copying it')
             ->addOption('relative', null, InputOption::VALUE_NONE, 'Make relative symlinks')
             ->setDescription('Installs bundles web assets under a public directory')
@@ -144,10 +144,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $io->newLine();
 
-        $rows = array();
+        $rows = [];
         $copyUsed = false;
         $exitCode = 0;
-        $validAssetDirs = array();
+        $validAssetDirs = [];
         /** @var BundleInterface $bundle */
         foreach ($kernel->getBundles() as $bundle) {
             if (!is_dir($originDir = $bundle->getPath().'/Resources/public')) {
@@ -180,13 +180,13 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 }
 
                 if ($method === $expectedMethod) {
-                    $rows[] = array(sprintf('<fg=green;options=bold>%s</>', '\\' === \DIRECTORY_SEPARATOR ? 'OK' : "\xE2\x9C\x94" /* HEAVY CHECK MARK (U+2714) */), $message, $method);
+                    $rows[] = [sprintf('<fg=green;options=bold>%s</>', '\\' === \DIRECTORY_SEPARATOR ? 'OK' : "\xE2\x9C\x94" /* HEAVY CHECK MARK (U+2714) */), $message, $method];
                 } else {
-                    $rows[] = array(sprintf('<fg=yellow;options=bold>%s</>', '\\' === \DIRECTORY_SEPARATOR ? 'WARNING' : '!'), $message, $method);
+                    $rows[] = [sprintf('<fg=yellow;options=bold>%s</>', '\\' === \DIRECTORY_SEPARATOR ? 'WARNING' : '!'), $message, $method];
                 }
             } catch (\Exception $e) {
                 $exitCode = 1;
-                $rows[] = array(sprintf('<fg=red;options=bold>%s</>', '\\' === \DIRECTORY_SEPARATOR ? 'ERROR' : "\xE2\x9C\x98" /* HEAVY BALLOT X (U+2718) */), $message, $e->getMessage());
+                $rows[] = [sprintf('<fg=red;options=bold>%s</>', '\\' === \DIRECTORY_SEPARATOR ? 'ERROR' : "\xE2\x9C\x98" /* HEAVY BALLOT X (U+2718) */), $message, $e->getMessage()];
             }
         }
         // remove the assets of the bundles that no longer exist
@@ -196,7 +196,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         }
 
         if ($rows) {
-            $io->table(array('', 'Bundle', 'Method / Error'), $rows);
+            $io->table(['', 'Bundle', 'Method / Error'], $rows);
         }
 
         if (0 !== $exitCode) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
index 6c5f0e1293fb..9f3c47197792 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
@@ -66,10 +66,10 @@ public function __construct($cacheClearer = null, Filesystem $filesystem = null)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputOption('no-warmup', '', InputOption::VALUE_NONE, 'Do not warm up the cache'),
                 new InputOption('no-optional-warmers', '', InputOption::VALUE_NONE, 'Skip optional cache warmers (faster)'),
-            ))
+            ])
             ->setDescription('Clears the cache')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command clears the application cache for a given environment
@@ -148,7 +148,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if ('/' === \DIRECTORY_SEPARATOR && $mounts = @file('/proc/mounts')) {
             foreach ($mounts as $mount) {
                 $mount = \array_slice(explode(' ', $mount), 1, -3);
-                if (!\in_array(array_pop($mount), array('vboxsf', 'nfs'))) {
+                if (!\in_array(array_pop($mount), ['vboxsf', 'nfs'])) {
                     continue;
                 }
                 $mount = implode(' ', $mount).'/';
@@ -222,7 +222,7 @@ protected function warmup($warmupDir, $realCacheDir, $enableOptionalWarmers = tr
         $warmer->warmUp($warmupDir);
 
         // fix references to cached files with the real cache directory name
-        $search = array($warmupDir, str_replace('\\', '\\\\', $warmupDir));
+        $search = [$warmupDir, str_replace('\\', '\\\\', $warmupDir)];
         $replace = str_replace('\\', '/', $realCacheDir);
         foreach (Finder::create()->files()->in($warmupDir) as $file) {
             $content = str_replace($search, $replace, file_get_contents($file), $count);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolClearCommand.php
index 43b27e673f89..dfb4df194fda 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolClearCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolClearCommand.php
@@ -54,9 +54,9 @@ public function __construct($poolClearer = null)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('pools', InputArgument::IS_ARRAY | InputArgument::REQUIRED, 'A list of cache pools or cache pool clearers'),
-            ))
+            ])
             ->setDescription('Clears cache pools')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command clears the given cache pools or cache pool clearers.
@@ -80,8 +80,8 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $io = new SymfonyStyle($input, $output);
         $kernel = $this->getApplication()->getKernel();
-        $pools = array();
-        $clearers = array();
+        $pools = [];
+        $clearers = [];
 
         foreach ($input->getArgument('pools') as $id) {
             if ($this->poolClearer->hasPool($id)) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php
index 593b93475564..0893f2db53b0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php
@@ -54,9 +54,9 @@ public function __construct($cacheWarmer = null)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputOption('no-optional-warmers', '', InputOption::VALUE_NONE, 'Skip optional cache warmers (faster)'),
-            ))
+            ])
             ->setDescription('Warms up an empty cache')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command warms up the cache.
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/ConfigDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/ConfigDebugCommand.php
index 658f1f9e0184..758c605ecfa0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/ConfigDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/ConfigDebugCommand.php
@@ -36,10 +36,10 @@ class ConfigDebugCommand extends AbstractConfigCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::OPTIONAL, 'The bundle name or the extension alias'),
                 new InputArgument('path', InputArgument::OPTIONAL, 'The configuration option path'),
-            ))
+            ])
             ->setDescription('Dumps the current configuration for an extension')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command dumps the current configuration for an
@@ -94,7 +94,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 sprintf('Current configuration for %s', ($name === $extensionAlias ? sprintf('extension with alias "%s"', $extensionAlias) : sprintf('"%s"', $name)))
             );
 
-            $io->writeln(Yaml::dump(array($extensionAlias => $config), 10));
+            $io->writeln(Yaml::dump([$extensionAlias => $config], 10));
 
             return;
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/ConfigDumpReferenceCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/ConfigDumpReferenceCommand.php
index bdcf13e8d650..37b179899830 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/ConfigDumpReferenceCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/ConfigDumpReferenceCommand.php
@@ -39,11 +39,11 @@ class ConfigDumpReferenceCommand extends AbstractConfigCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::OPTIONAL, 'The Bundle name or the extension alias'),
                 new InputArgument('path', InputArgument::OPTIONAL, 'The configuration option path'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (yaml or xml)', 'yaml'),
-            ))
+            ])
             ->setDescription('Dumps the default configuration for an extension')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command dumps the default
10000
 configuration for an
@@ -81,17 +81,17 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         if (null === $name = $input->getArgument('name')) {
             $this->listBundles($errorIo);
-            $errorIo->comment(array(
+            $errorIo->comment([
                 'Provide the name of a bundle as the first argument of this command to dump its default configuration. (e.g. <comment>config:dump-reference FrameworkBundle</comment>)',
                 'For dumping a specific option, add its path as the second argument of this command. (e.g. <comment>config:dump-reference FrameworkBundle profiler.matcher</comment> to dump the <comment>framework.profiler.matcher</comment> configuration)',
-            ));
+            ]);
 
             return;
         }
 
         $extension = $this->findExtension($name);
 
-        $configuration = $extension->getConfiguration(array(), $this->getContainerBuilder());
+        $configuration = $extension->getConfiguration([], $this->getContainerBuilder());
 
         $this->validateConfiguration($extension, $configuration);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
index ad7affab87d8..62adea0e55f8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
@@ -46,7 +46,7 @@ class ContainerDebugCommand extends ContainerAwareCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::OPTIONAL, 'A service name (foo)'),
                 new InputOption('show-private', null, InputOption::VALUE_NONE, 'Used to show public *and* private services'),
                 new InputOption('show-arguments', null, InputOption::VALUE_NONE, 'Used to show arguments in services'),
@@ -57,7 +57,7 @@ protected function configure()
                 new InputOption('types', null, InputOption::VALUE_NONE, 'Displays types (classes/interfaces) available in the container'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
                 new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw description'),
-            ))
+            ])
             ->setDescription('Displays current services for an application')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays all configured <comment>public</comment> services:
@@ -110,26 +110,26 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $object = $this->getContainerBuilder();
 
         if ($input->getOption('types')) {
-            $options = array('show_private' => true);
-            $options['filter'] = array($this, 'filterToServiceTypes');
+            $options = ['show_private' => true];
+            $options['filter'] = [$this, 'filterToServiceTypes'];
         } elseif ($input->getOption('parameters')) {
-            $parameters = array();
+            $parameters = [];
             foreach ($object->getParameterBag()->all() as $k => $v) {
                 $parameters[$k] = $object->resolveEnvPlaceholders($v);
             }
             $object = new ParameterBag($parameters);
-            $options = array();
+            $options = [];
         } elseif ($parameter = $input->getOption('parameter')) {
-            $options = array('parameter' => $parameter);
+            $options = ['parameter' => $parameter];
         } elseif ($input->getOption('tags')) {
-            $options = array('group_by' => 'tags', 'show_private' => $input->getOption('show-private'));
+            $options = ['group_by' => 'tags', 'show_private' => $input->getOption('show-private')];
         } elseif ($tag = $input->getOption('tag')) {
-            $options = array('tag' => $tag, 'show_private' => $input->getOption('show-private'));
+            $options = ['tag' => $tag, 'show_private' => $input->getOption('show-private')];
         } elseif ($name = $input->getArgument('name')) {
             $name = $this->findProperServiceName($input, $errorIo, $object, $name);
-            $options = array('id' => $name);
+            $options = ['id' => $name];
         } else {
-            $options = array('show_private' => $input->getOption('show-private'));
+            $options = ['show_private' => $input->getOption('show-private')];
         }
 
         $helper = new DescriptorHelper();
@@ -157,7 +157,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
      */
     protected function validateInput(InputInterface $input)
     {
-        $options = array('tags', 'tag', 'parameters', 'parameter');
+        $options = ['tags', 'tag', 'parameters', 'parameter'];
 
         $optionsCount = 0;
         foreach ($options as $option) {
@@ -192,7 +192,7 @@ protected function getContainerBuilder()
         if (!$kernel->isDebug() || !(new ConfigCache($kernel->getContainer()->getParameter('debug.container.dump'), true))->isFresh()) {
             $buildContainer = \Closure::bind(function () { return $this->buildContainer(); }, $kernel, \get_class($kernel));
             $container = $buildContainer();
-            $container->getCompilerPassConfig()->setRemovingPasses(array());
+            $container->getCompilerPassConfig()->setRemovingPasses([]);
             $container->compile();
         } else {
             (new XmlFileLoader($container = new ContainerBuilder(), new FileLocator()))->load($kernel->getContainer()->getParameter('debug.container.dump'));
@@ -220,7 +220,7 @@ private function findProperServiceName(InputInterface $input, SymfonyStyle $io,
     private function findServiceIdsContaining(ContainerBuilder $builder, $name)
     {
         $serviceIds = $builder->getServiceIds();
-        $foundServiceIds = array();
+        $foundServiceIds = [];
         foreach ($serviceIds as $serviceId) {
             if (false === stripos($serviceId, $name)) {
                 continue;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
index 23d688495db7..72ac54856f07 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
@@ -33,9 +33,9 @@ class DebugAutowiringCommand extends ContainerDebugCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('search', InputArgument::OPTIONAL, 'A search filter'),
-            ))
+            ])
             ->setDescription('Lists classes/interfaces you can use for autowiring')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays all classes and interfaces that
@@ -62,7 +62,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $builder = $this->getContainerBuilder();
         $serviceIds = $builder->getServiceIds();
-        $serviceIds = array_filter($serviceIds, array($this, 'filterToServiceTypes'));
+        $serviceIds = array_filter($serviceIds, [$this, 'filterToServiceTypes']);
 
         if ($search = $input->getArgument('search')) {
             $serviceIds = array_filter($serviceIds, function ($serviceId) use ($search) {
@@ -84,14 +84,14 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $io->text(sprintf('(only showing classes/interfaces matching <comment>%s</comment>)', $search));
         }
         $io->newLine();
-        $tableRows = array();
+        $tableRows = [];
         foreach ($serviceIds as $serviceId) {
-            $tableRows[] = array(sprintf('<fg=cyan>%s</fg=cyan>', $serviceId));
+            $tableRows[] = [sprintf('<fg=cyan>%s</fg=cyan>', $serviceId)];
             if ($builder->hasAlias($serviceId)) {
-                $tableRows[] = array(sprintf('    alias to %s', $builder->getAlias($serviceId)));
+                $tableRows[] = [sprintf('    alias to %s', $builder->getAlias($serviceId))];
             }
         }
 
-        $io->table(array(), $tableRows);
+        $io->table([], $tableRows);
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/EventDispatcherDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/EventDispatcherDebugCommand.php
index 9f7a916fdf25..846895323a7f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/EventDispatcherDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/EventDispatcherDebugCommand.php
@@ -55,11 +55,11 @@ public function __construct($dispatcher = null)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('event', InputArgument::OPTIONAL, 'An event name'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format  (txt, xml, json, or md)', 'txt'),
                 new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw description'),
-            ))
+            ])
             ->setDescription('Displays configured listeners for an application')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays all configured listeners:
@@ -88,7 +88,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $io = new SymfonyStyle($input, $output);
 
-        $options = array();
+        $options = [];
         if ($event = $input->getArgument('event')) {
             if (!$this->dispatcher->hasListeners($event)) {
                 $io->getErrorStyle()->warning(sprintf('The event "%s" does not have any registered listeners.', $event));
@@ -96,7 +96,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 return;
             }
 
-            $options = array('event' => $event);
+            $options = ['event' => $event];
         }
 
         $helper = new DescriptorHelper();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
index fbf7ba9d8e04..b428b9e45c6a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
@@ -81,12 +81,12 @@ public function isEnabled()
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::OPTIONAL, 'A route name'),
                 new InputOption('show-controllers', null, InputOption::VALUE_NONE, 'Show assigned controllers in overview'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
                 new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw route(s)'),
-            ))
+            ])
             ->setDescription('Displays current routes for an application')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> displays the configured routes:
@@ -122,24 +122,24 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
             $callable = $this->extractCallable($route);
 
-            $helper->describe($io, $route, array(
+            $helper->describe($io, $route, [
                 'format' => $input->getOption('format'),
                 'raw_text' => $input->getOption('raw'),
                 'name' => $name,
                 'output' => $io,
                 'callable' => $callable,
-            ));
+            ]);
         } else {
             foreach ($routes as $route) {
                 $this->convertController($route);
             }
 
-            $helper->describe($io, $routes, array(
+            $helper->describe($io, $routes, [
                 'format' => $input->getOption('format'),
                 'raw_text' => $input->getOption('raw'),
                 'show_controllers' => $input->getOption('show-controllers'),
                 'output' => $io,
-            ));
+            ]);
         }
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/RouterMatchCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/RouterMatchCommand.php
index 7ea1af66dd9a..972c055bd162 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/RouterMatchCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/RouterMatchCommand.php
@@ -78,12 +78,12 @@ public function isEnabled()
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('path_info', InputArgument::REQUIRED, 'A path info'),
                 new InputOption('method', null, InputOption::VALUE_REQUIRED, 'Sets the HTTP method'),
                 new InputOption('scheme', null, InputOption::VALUE_REQUIRED, 'Sets the URI scheme (usually http or https)'),
                 new InputOption('host', null, InputOption::VALUE_REQUIRED, 'Sets the URI host'),
-            ))
+            ])
             ->setDescription('Helps debug routes by simulating a path info match')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> shows which routes match a given request and which don't and for what reason:
@@ -136,7 +136,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 $io->success(sprintf('Route "%s" matches', $trace['name']));
 
                 $routerDebugCommand = $this->getApplication()->find('debug:router');
-                $routerDebugCommand->run(new ArrayInput(array('name' => $trace['name'])), $output);
+                $routerDebugCommand->run(new ArrayInput(['name' => $trace['name']]), $output);
 
                 $matches = true;
             } elseif ($input->getOption('verbose')) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
index cd737e88f3c4..33b984663681 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
@@ -74,14 +74,14 @@ public function __construct($translator = null, TranslationReaderInterface $read
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('locale', InputArgument::REQUIRED, 'The locale'),
                 new InputArgument('bundle', InputArgument::OPTIONAL, 'The bundle name or directory where to load the messages'),
                 new InputOption('domain', null, InputOption::VALUE_OPTIONAL, 'The messages domain'),
                 new InputOption('only-missing', null, InputOption::VALUE_NONE, 'Displays only missing messages'),
                 new InputOption('only-unused', null, InputOption::VALUE_NONE, 'Displays only unused messages'),
                 new InputOption('all', null, InputOption::VALUE_NONE, 'Load messages from all registered bundles'),
-            ))
+            ])
             ->setDescription('Displays translation messages information')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command helps finding unused or missing translation
@@ -156,11 +156,11 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $kernel = $this->getApplication()->getKernel();
 
         // Define Root Paths
-        $transPaths = array($kernel->getRootDir().'/Resources/translations');
+        $transPaths = [$kernel->getRootDir().'/Resources/translations'];
         if ($this->defaultTransPath) {
             $transPaths[] = $this->defaultTransPath;
         }
-        $viewsPaths = array($kernel->getRootDir().'/Resources/views');
+        $viewsPaths = [$kernel->getRootDir().'/Resources/views'];
         if ($this->defaultViewsPath) {
             $viewsPaths[] = $this->defaultViewsPath;
         }
@@ -169,20 +169,20 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if (null !== $input->getArgument('bundle')) {
             try {
                 $bundle = $kernel->getBundle($input->getArgument('bundle'));
-                $transPaths = array($bundle->getPath().'/Resources/translations');
+                $transPaths = [$bundle->getPath().'/Resources/translations'];
                 if ($this->defaultTransPath) {
                     $transPaths[] = $this->defaultTransPath.'/'.$bundle->getName();
                 }
                 $transPaths[] = sprintf('%s/Resources/%s/translations', $kernel->getRootDir(), $bundle->getName());
-                $viewsPaths = array($bundle->getPath().'/Resources/views');
+                $viewsPaths = [$bundle->getPath().'/Resources/views'];
                 if ($this->defaultViewsPath) {
                     $viewsPaths[] = $this->defaultViewsPath.'/bundles/'.$bundle->getName();
                 }
                 $viewsPaths[] = sprintf('%s/Resources/%s/views', $kernel->getRootDir(), $bundle->getName());
             } catch (\InvalidArgumentException $e) {
                 // such a bundle does not exist, so treat the argument as path
-                $transPaths = array($input->getArgument('bundle').'/Resources/translations');
-                $viewsPaths = array($input->getArgument('bundle').'/Resources/views');
+                $transPaths = [$input->getArgument('bundle').'/Resources/translations'];
+                $viewsPaths = [$input->getArgument('bundle').'/Resources/views'];
 
                 if (!is_dir($transPaths[0])) {
                     throw new InvalidArgumentException(sprintf('"%s" is neither an enabled bundle nor a directory.', $transPaths[0]));
@@ -213,7 +213,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $mergeOperation = new MergeOperation($extractedCatalogue, $currentCatalogue);
         $allMessages = $mergeOperation->getResult()->all($domain);
         if (null !== $domain) {
-            $allMessages = array($domain => $allMessages);
+            $allMessages = [$domain => $allMessages];
         }
 
         // No defined or extracted messages
@@ -233,16 +233,16 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $fallbackCatalogues = $this->loadFallbackCatalogues($locale, $transPaths);
 
         // Display header line
-        $headers = array('State', 'Domain', 'Id', sprintf('Message Preview (%s)', $locale));
+        $headers = ['State', 'Domain', 'Id', sprintf('Message Preview (%s)', $locale)];
         foreach ($fallbackCatalogues as $fallbackCatalogue) {
             $headers[] = sprintf('Fallback Message Preview (%s)', $fallbackCatalogue->getLocale());
         }
-        $rows = array();
+        $rows = [];
         // Iterate all message ids and determine their state
         foreach ($allMessages as $domain => $messages) {
             foreach (array_keys($messages) as $messageId) {
                 $value = $currentCatalogue->get($messageId, $domain);
-                $states = array();
+                $states = [];
 
                 if ($extractedCatalogue->defines($messageId, $domain)) {
                     if (!$currentCatalogue->defines($messageId, $domain)) {
@@ -265,7 +265,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                     }
                 }
 
-                $row = array($this->formatStates($states), $domain, $this->formatId($messageId), $this->sanitizeString($value));
+                $row = [$this->formatStates($states), $domain, $this->formatId($messageId), $this->sanitizeString($value)];
                 foreach ($fallbackCatalogues as $fallbackCatalogue) {
                     $row[] = $this->sanitizeString($fallbackCatalogue->get($messageId, $domain));
                 }
@@ -296,7 +296,7 @@ private function formatState($state)
 
     private function formatStates(array $states)
     {
-        $result = array();
+        $result = [];
         foreach ($states as $state) {
             $result[] = $this->formatState($state);
         }
@@ -368,7 +368,7 @@ private function loadCurrentMessages($locale, $transPaths)
      */
     private function loadFallbackCatalogues($locale, $transPaths)
     {
-        $fallbackCatalogues = array();
+        $fallbackCatalogues = [];
         if ($this->translator instanceof Translator || $this->translator instanceof DataCollectorTranslator || $this->translator instanceof LoggingTranslator) {
             foreach ($this->translator->getFallbackLocales() as $fallbackLocale) {
                 if ($fallbackLocale === $locale) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
index 0926501306c3..72e410d2c3e3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
@@ -78,7 +78,7 @@ public function __construct($writer = null, TranslationReaderInterface $reader =
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('locale', InputArgument::REQUIRED, 'The locale'),
                 new InputArgument('bundle', InputArgument::OPTIONAL, 'The bundle name or directory where to load the messages'),
                 new InputOption('prefix', null, InputOption::VALUE_OPTIONAL, 'Override the default prefix', '__'),
@@ -89,7 +89,7 @@ protected function configure()
                 new InputOption('no-backup', null, InputOption::VALUE_NONE, 'Should backup be disabled'),
                 new InputOption('clean', null, InputOption::VALUE_NONE, 'Should clean not found messages'),
                 new InputOption('domain', null, InputOption::VALUE_OPTIONAL, 'Specify the domain to update'),
-            ))
+            ])
             ->setDescription('Updates the translation file')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command extracts translation strings from templates
@@ -155,7 +155,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         // check format
         $supportedFormats = $this->writer->getFormats();
         if (!\in_array($input->getOption('output-format'), $supportedFormats)) {
-            $errorIo->error(array('Wrong output format', 'Supported formats are: '.implode(', ', $supportedFormats).'.'));
+            $errorIo->error(['Wrong output format', 'Supported formats are: '.implode(', ', $supportedFormats).'.']);
 
             return 1;
         }
@@ -163,11 +163,11 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $kernel = $this->getApplication()->getKernel();
 
         // Define Root Paths
-        $transPaths = array($kernel->getRootDir().'/Resources/translations');
+        $transPaths = [$kernel->getRootDir().'/Resources/translations'];
         if ($this->defaultTransPath) {
             $transPaths[] = $this->defaultTransPath;
         }
-        $viewsPaths = array($kernel->getRootDir().'/Resources/views');
+        $viewsPaths = [$kernel->getRootDir().'/Resources/views'];
         if ($this->defaultViewsPath) {
             $viewsPaths[] = $this->defaultViewsPath;
         }
@@ -177,12 +177,12 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if (null !== $input->getArgument('bundle')) {
             try {
                 $foundBundle = $kernel->getBundle($input->getArgument('bundle'));
-                $transPaths = array($foundBundle->getPath().'/Resources/translations');
+                $transPaths = [$foundBundle->getPath().'/Resources/translations'];
                 if ($this->defaultTransPath) {
                     $transPaths[] = $this->defaultTransPath.'/'.$foundBundle->getName();
                 }
                 $transPaths[] = sprintf('%s/Resources/%s/translations', $kernel->getRootDir(), $foundBundle->getName());
-                $viewsPaths = array($foundBundle->getPath().'/Resources/views');
+                $viewsPaths = [$foundBundle->getPath().'/Resources/views'];
                 if ($this->defaultViewsPath) {
                     $viewsPaths[] = $this->defaultViewsPath.'/bundles/'.$foundBundle->getName();
                 }
@@ -190,8 +190,8 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 $currentName = $foundBundle->getName();
             } catch (\InvalidArgumentException $e) {
                 // such a bundle does not exist, so treat the argument as path
-                $transPaths = array($input->getArgument('bundle').'/Resources/translations');
-                $viewsPaths = array($input->getArgument('bundle').'/Resources/views');
+                $transPaths = [$input->getArgument('bundle').'/Resources/translations'];
+                $viewsPaths = [$input->getArgument('bundle').'/Resources/views'];
                 $currentName = $transPaths[0];
 
                 if (!is_dir($transPaths[0])) {
@@ -299,7 +299,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 $bundleTransPath = end($transPaths);
             }
 
-            $this->writer->write($operation->getResult(), $input->getOption('output-format'), array('path' => $bundleTransPath, 'default_locale' => $this->defaultLocale));
+            $this->writer->write($operation->getResult(), $input->getOption('output-format'), ['path' => $bundleTransPath, 'default_locale' => $this->defaultLocale]);
 
             if (true === $input->getOption('dump-messages')) {
                 $resultMessage .= ' and translation files were updated';
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/WorkflowDumpCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/WorkflowDumpCommand.php
index bdc5690d7299..fa11f792dde3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/WorkflowDumpCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/WorkflowDumpCommand.php
@@ -34,10 +34,10 @@ class WorkflowDumpCommand extends ContainerAwareCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::REQUIRED, 'A workflow name'),
                 new InputArgument('marking', InputArgument::IS_ARRAY, 'A marking (a list of places)'),
-            ))
+            ])
             ->setDescription('Dump a workflow')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command dumps the graphical representation of a
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Application.php b/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
index 10255a488673..513c6eb66259 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
@@ -31,7 +31,7 @@ class Application extends BaseApplication
 {
     private $kernel;
     private $commandsRegistered = false;
-    private $registrationErrors = array();
+    private $registrationErrors = [];
 
     public function __construct(KernelInterface $kernel)
     {
@@ -166,7 +166,7 @@ protected function registerCommands()
         }
 
         if ($container->hasParameter('console.command.ids')) {
-            $lazyCommandIds = $container->hasParameter('console.lazy_command.ids') ? $container->getParameter('console.lazy_command.ids') : array();
+            $lazyCommandIds = $container->hasParameter('console.lazy_command.ids') ? $container->getParameter('console.lazy_command.ids') : [];
             foreach ($container->getParameter('console.command.ids') as $id) {
                 if (!isset($lazyCommandIds[$id])) {
                     try {
@@ -193,6 +193,6 @@ private function renderRegistrationErrors(InputInterface $input, OutputInterface
             $this->doRenderException($error, $output);
         }
 
-        $this->registrationErrors = array();
+        $this->registrationErrors = [];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
index be1ef79d205a..fda0fb28d303 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
@@ -36,7 +36,7 @@ abstract class Descriptor implements DescriptorInterface
     /**
      * {@inheritdoc}
      */
-    public function describe(OutputInterface $output, $object, array $options = array())
+    public function describe(OutputInterface $output, $object, array $options = [])
     {
         $this->output = $output;
 
@@ -103,22 +103,22 @@ protected function write($content, $decorated = false)
     /**
      * Describes an InputArgument instance.
      */
-    abstract protected function describeRouteCollection(RouteCollection $routes, array $options = array());
+    abstract protected function describeRouteCollection(RouteCollection $routes, array $options = []);
 
     /**
      * Describes an InputOption instance.
      */
-    abstract protected function describeRoute(Route $route, array $options = array());
+    abstract protected function describeRoute(Route $route, array $options = []);
 
     /**
      * Describes container parameters.
      */
-    abstract protected function describeContainerParameters(ParameterBag $parameters, array $options = array());
+    abstract protected function describeContainerParameters(ParameterBag $parameters, array $options = []);
 
     /**
      * Describes container tags.
      */
-    abstract protected function describeContainerTags(ContainerBuilder $builder, array $options = array());
+    abstract protected function describeContainerTags(ContainerBuilder $builder, array $options = []);
 
     /**
      * Describes a container service by its name.
@@ -130,7 +130,7 @@ abstract protected function describeContainerTags(ContainerBuilder $builder, arr
      * @param array                   $options
      * @param ContainerBuilder|null   $builder
      */
-    abstract protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null);
+    abstract protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null);
 
     /**
      * Describes container services.
@@ -138,22 +138,22 @@ abstract protected function describeContainerService($service, array $options =
      * Common options are:
      * * tag: filters described services by given tag
      */
-    abstract protected function describeContainerServices(ContainerBuilder $builder, array $options = array());
+    abstract protected function describeContainerServices(ContainerBuilder $builder, array $options = []);
 
     /**
      * Describes a service definition.
      */
-    abstract protected function describeContainerDefinition(Definition $definition, array $options = array());
+    abstract protected function describeContainerDefinition(Definition $definition, array $options = []);
 
     /**
      * Describes a service alias.
      */
-    abstract protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null);
+    abstract protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null);
 
     /**
      * Describes a container parameter.
      */
-    abstract protected function describeContainerParameter($parameter, array $options = array());
+    abstract protected function describeContainerParameter($parameter, array $options = []);
 
     /**
      * Describes event dispatcher listeners.
@@ -161,7 +161,7 @@ abstract protected function describeContainerParameter($parameter, array $option
      * Common options are:
      * * name: name of listened event
      */
-    abstract protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array());
+    abstract protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = []);
 
     /**
      * Describes a callable.
@@ -169,7 +169,7 @@ abstract protected function describeEventDispatcherListeners(EventDispatcherInte
      * @param callable $callable
      * @param array    $options
      */
-    abstract protected function describeCallable($callable, array $options = array());
+    abstract protected function describeCallable($callable, array $options = []);
 
     /**
      * Formats a value as string.
@@ -242,7 +242,7 @@ protected function resolveServiceDefinition(ContainerBuilder $builder, $serviceI
      */
     protected function findDefinitionsByTag(ContainerBuilder $builder, $showPrivate)
     {
-        $definitions = array();
+        $definitions = [];
         $tags = $builder->findTags();
         asort($tags);
 
@@ -255,7 +255,7 @@ protected function findDefinitionsByTag(ContainerBuilder $builder, $showPrivate)
                 }
 
                 if (!isset($definitions[$tag])) {
-                    $definitions[$tag] = array();
+                    $definitions[$tag] = [];
                 }
 
                 $definitions[$tag][$serviceId] = $definition;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
index 05238f37240e..83f607cc384f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
@@ -32,9 +32,9 @@ class JsonDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeRouteCollection(RouteCollection $routes, array $options = array())
+    protected function describeRouteCollection(RouteCollection $routes, array $options = [])
     {
-        $data = array();
+        $data = [];
         foreach ($routes->all() as $name => $route) {
             $data[$name] = $this->getRouteData($route);
         }
@@ -45,7 +45,7 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeRoute(Route $route, array $options = array())
+    protected function describeRoute(Route $route, array $options = [])
     {
         $this->writeData($this->getRouteData($route), $options);
     }
@@ -53,7 +53,7 @@ protected function describeRoute(Route $route, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameters(ParameterBag $parameters, array $options = array())
+    protected function describeContainerParameters(ParameterBag $parameters, array $options = [])
     {
         $this->writeData($this->sortParameters($parameters), $options);
     }
@@ -61,13 +61,13 @@ protected function describeContainerParameters(ParameterBag $parameters, array $
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerTags(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerTags(ContainerBuilder $builder, array $options = [])
     {
         $showPrivate = isset($options['show_private']) && $options['show_private'];
-        $data = array();
+        $data = [];
 
         foreach ($this->findDefinitionsByTag($builder, $showPrivate) as $tag => $definitions) {
-            $data[$tag] = array();
+            $data[$tag] = [];
             foreach ($definitions as $definition) {
                 $data[$tag][] = $this->getContainerDefinitionData($definition, true);
             }
@@ -79,7 +79,7 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null)
     {
         if (!isset($options['id'])) {
             throw new \InvalidArgumentException('An "id" option must be provided.');
@@ -97,13 +97,13 @@ protected function describeContainerService($service, array $options = array(),
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerServices(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerServices(ContainerBuilder $builder, array $options = [])
     {
         $serviceIds = isset($options['tag']) && $options['tag'] ? array_keys($builder->findTaggedServiceIds($options['tag'])) : $builder->getServiceIds();
         $showPrivate = isset($options['show_private']) && $options['show_private'];
         $omitTags = isset($options['omit_tags']) && $options['omit_tags'];
         $showArguments = isset($options['show_arguments']) && $options['show_arguments'];
-        $data = array('definitions' => array(), 'aliases' => array(), 'services' => array());
+        $data = ['definitions' => [], 'aliases' => [], 'services' => []];
 
         if (isset($options['filter'])) {
             $serviceIds = array_filter($serviceIds, $options['filter']);
@@ -131,7 +131,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerDefinition(Definition $definition, array $options = array())
+    protected function describeContainerDefinition(Definition $definition, array $options = [])
     {
         $this->writeData($this->getContainerDefinitionData($definition, isset($options['omit_tags']) && $options['omit_tags'], isset($options['show_arguments']) && $options['show_arguments']), $options);
     }
@@ -139,22 +139,22 @@ protected function describeContainerDefinition(Definition $definition, array $op
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null)
     {
         if (!$builder) {
             return $this->writeData($this->getContainerAliasData($alias), $options);
         }
 
         $this->writeData(
-            array($this->getContainerAliasData($alias), $this->getContainerDefinitionData($builder->getDefinition((string) $alias), isset($options['omit_tags']) && $options['omit_tags'], isset($options['show_arguments']) && $options['show_arguments'])),
-            array_merge($options, array('id' => (string) $alias))
+            [$this->getContainerAliasData($alias), $this->getContainerDefinitionData($builder->getDefinition((string) $alias), isset($options['omit_tags']) && $options['omit_tags'], isset($options['show_arguments']) && $options['show_arguments'])],
+            array_merge($options, ['id' => (string) $alias])
         );
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array())
+    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = [])
     {
         $this->writeData($this->getEventDispatcherListenersData($eventDispatcher, array_key_exists('event', $options) ? $options['event'] : null), $options);
     }
@@ -162,7 +162,7 @@ protected function describeEventDispatcherListeners(EventDispatcherInterface $ev
     /**
      * {@inheritdoc}
      */
-    protected function describeCallable($callable, array $options = array())
+    protected function describeCallable($callable, array $options = [])
     {
         $this->writeData($this->getCallableData($callable, $options), $options);
     }
@@ -170,11 +170,11 @@ protected function describeCallable($callable, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameter($parameter, array $options = array())
+    protected function describeContainerParameter($parameter, array $options = [])
     {
         $key = isset($options['parameter']) ? $options['parameter'] : '';
 
-        $this->writeData(array($key => $parameter), $options);
+        $this->writeData([$key => $parameter], $options);
     }
 
     /**
@@ -193,7 +193,7 @@ private function writeData(array $data, array $options)
      */
     protected function getRouteData(Route $route)
     {
-        return array(
+        return [
             'path' => $route->getPath(),
             'pathRegex' => $route->compile()->getRegex(),
             'host' => '' !== $route->getHost() ? $route->getHost() : 'ANY',
@@ -204,7 +204,7 @@ protected function getRouteData(Route $route)
             'defaults' => $route->getDefaults(),
             'requirements' => $route->getRequirements() ?: 'NO CUSTOM',
             'options' => $route->getOptions(),
-        );
+        ];
     }
 
     /**
@@ -215,7 +215,7 @@ protected function getRouteData(Route $route)
      */
     private function getContainerDefinitionData(Definition $definition, $omitTags = false, $showArguments = false)
     {
-        $data = array(
+        $data = [
             'class' => (string) $definition->getClass(),
             'public' => $definition->isPublic() && !$definition->isPrivate(),
             'synthetic' => $definition->isSynthetic(),
@@ -224,7 +224,7 @@ private function getContainerDefinitionData(Definition $definition, $omitTags =
             'abstract' => $definition->isAbstract(),
             'autowire' => $definition->isAutowired(),
             'autoconfigure' => $definition->isAutoconfigured(),
-        );
+        ];
 
         // forward compatibility with DependencyInjection component in version 4.0
         if (method_exists($definition, 'getAutowiringTypes')) {
@@ -256,17 +256,17 @@ private function getContainerDefinitionData(Definition $definition, $omitTags =
 
         $calls = $definition->getMethodCalls();
         if (\count($calls) > 0) {
-            $data['calls'] = array();
+            $data['calls'] = [];
             foreach ($calls as $callData) {
                 $data['calls'][] = $callData[0];
             }
         }
 
         if (!$omitTags) {
-            $data['tags'] = array();
+            $data['tags'] = [];
             foreach ($definition->getTags() as $tagName => $tagData) {
                 foreach ($tagData as $parameters) {
-                    $data['tags'][] = array('name' => $tagName, 'parameters' => $parameters);
+                    $data['tags'][] = ['name' => $tagName, 'parameters' => $parameters];
                 }
             }
         }
@@ -279,10 +279,10 @@ private function getContainerDefinitionData(Definition $definition, $omitTags =
      */
     private function getContainerAliasData(Alias $alias)
     {
-        return array(
+        return [
             'service' => (string) $alias,
             'public' => $alias->isPublic() && !$alias->isPrivate(),
-        );
+        ];
     }
 
     /**
@@ -293,7 +293,7 @@ private function getContainerAliasData(Alias $alias)
      */
     private function getEventDispatcherListenersData(EventDispatcherInterface $eventDispatcher, $event = null)
     {
-        $data = array();
+        $data = [];
 
         $registeredListeners = $eventDispatcher->getListeners($event);
         if (null !== $event) {
@@ -323,9 +323,9 @@ private function getEventDispatcherListenersData(EventDispatcherInterface $event
      *
      * @return array
      */
-    private function getCallableData($callable, array $options = array())
+    private function getCallableData($callable, array $options = [])
     {
-        $data = array();
+        $data = [];
 
         if (\is_array($callable)) {
             $data['type'] = 'function';
@@ -397,7 +397,7 @@ private function getCallableData($callable, array $options = array())
     private function describeValue($value, $omitTags, $showArguments)
     {
         if (\is_array($value)) {
-            $data = array();
+            $data = [];
             foreach ($value as $k => $v) {
                 $data[$k] = $this->describeValue($v, $omitTags, $showArguments);
             }
@@ -410,10 +410,10 @@ private function describeValue($value, $omitTags, $showArguments)
         }
 
         if ($value instanceof Reference) {
-            return array(
+            return [
                 'type' => 'service',
                 'id' => (string) $value,
-            );
+            ];
         }
 
         if ($value instanceof ArgumentInterface) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
index 9249ca5baa6b..a0a0dc85166f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/MarkdownDescriptor.php
@@ -30,7 +30,7 @@ class MarkdownDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeRouteCollection(RouteCollection $routes, array $options = array())
+    protected function describeRouteCollection(RouteCollection $routes, array $options = [])
     {
         $first = true;
         foreach ($routes->all() as $name => $route) {
@@ -39,7 +39,7 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
             } else {
                 $this->write("\n\n");
             }
-            $this->describeRoute($route, array('name' => $name));
+            $this->describeRoute($route, ['name' => $name]);
         }
         $this->write("\n");
     }
@@ -47,7 +47,7 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeRoute(Route $route, array $options = array())
+    protected function describeRoute(Route $route, array $options = [])
     {
         $output = '- Path: '.$route->getPath()
             ."\n".'- Path Regex: '.$route->compile()->getRegex()
@@ -69,7 +69,7 @@ protected function describeRoute(Route $route, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameters(ParameterBag $parameters, array $options = array())
+    protected function describeContainerParameters(ParameterBag $parameters, array $options = [])
     {
         $this->write("Container parameters\n====================\n");
         foreach ($this->sortParameters($parameters) as $key => $value) {
@@ -80,7 +80,7 @@ protected function describeContainerParameters(ParameterBag $parameters, array $
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerTags(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerTags(ContainerBuilder $builder, array $options = [])
     {
         $showPrivate = isset($options['show_private']) && $options['show_private'];
         $this->write("Container tags\n==============");
@@ -89,7 +89,7 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
             $this->write("\n\n".$tag."\n".str_repeat('-', \strlen($tag)));
             foreach ($definitions as $serviceId => $definition) {
                 $this->write("\n\n");
-                $this->describeContainerDefinition($definition, array('omit_tags' => true, 'id' => $serviceId));
+                $this->describeContainerDefinition($definition, ['omit_tags' => true, 'id' => $serviceId]);
             }
         }
     }
@@ -97,13 +97,13 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null)
     {
         if (!isset($options['id'])) {
             throw new \InvalidArgumentException('An "id" option must be provided.');
         }
 
-        $childOptions = array_merge($options, array('id' => $options['id'], 'as_array' => true));
+        $childOptions = array_merge($options, ['id' => $options['id'], 'as_array' => true]);
 
         if ($service instanceof Alias) {
             $this->describeContainerAlias($service, $childOptions, $builder);
@@ -117,7 +117,7 @@ protected function describeContainerService($service, array $options = array(),
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerServices(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerServices(ContainerBuilder $builder, array $options = [])
     {
         $showPrivate = isset($options['show_private']) && $options['show_private'];
 
@@ -129,7 +129,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
 
         $serviceIds = isset($options['tag']) && $options['tag'] ? array_keys($builder->findTaggedServiceIds($options['tag'])) : $builder->getServiceIds();
         $showArguments = isset($options['show_arguments']) && $options['show_arguments'];
-        $services = array('definitions' => array(), 'aliases' => array(), 'services' => array());
+        $services = ['definitions' => [], 'aliases' => [], 'services' => []];
 
         if (isset($options['filter'])) {
             $serviceIds = array_filter($serviceIds, $options['filter']);
@@ -155,7 +155,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
             $this->write("\n\nDefinitions\n-----------\n");
             foreach ($services['definitions'] as $id => $service) {
                 $this->write("\n");
-                $this->describeContainerDefinition($service, array('id' => $id, 'show_arguments' => $showArguments));
+                $this->describeContainerDefinition($service, ['id' => $id, 'show_arguments' => $showArguments]);
             }
         }
 
@@ -163,7 +163,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
             $this->write("\n\nAliases\n-------\n");
             foreach ($services['aliases'] as $id => $service) {
                 $this->write("\n");
-                $this->describeContainerAlias($service, array('id' => $id));
+                $this->describeContainerAlias($service, ['id' => $id]);
             }
         }
 
@@ -179,7 +179,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerDefinition(Definition $definition, array $options = array())
+    protected function describeContainerDefinition(Definition $definition, array $options = [])
     {
         $output = '- Class: `'.$definition->getClass().'`'
             ."\n".'- Public: '.($definition->isPublic() && !$definition->isPrivate() ? 'yes' : 'no')
@@ -243,7 +243,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null)
     {
         $output = '- Service: `'.$alias.'`'
             ."\n".'- Public: '.($alias->isPublic() && !$alias->isPrivate() ? 'yes' : 'no');
@@ -259,13 +259,13 @@ protected function describeContainerAlias(Alias $alias, array $options = array()
         }
 
         $this->write("\n");
-        $this->describeContainerDefinition($builder->getDefinition((string) $alias), array_merge($options, array('id' => (string) $alias)));
+        $this->describeContainerDefinition($builder->getDefinition((string) $alias), array_merge($options, ['id' => (string) $alias]));
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameter($parameter, array $options = array())
+    protected function describeContainerParameter($parameter, array $options = [])
     {
         $this->write(isset($options['parameter']) ? sprintf("%s\n%s\n\n%s", $options['parameter'], str_repeat('=', \strlen($options['parameter'])), $this->formatParameter($parameter)) : $parameter);
     }
@@ -273,7 +273,7 @@ protected function describeContainerParameter($parameter, array $options = array
     /**
      * {@inheritdoc}
      */
-    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array())
+    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = [])
     {
         $event = array_key_exists('event', $options) ? $options['event'] : null;
 
@@ -309,7 +309,7 @@ protected function describeEventDispatcherListeners(EventDispatcherInterface $ev
     /**
      * {@inheritdoc}
      */
-    protected function describeCallable($callable, array $options = array())
+    protected function describeCallable($callable, array $options = [])
     {
         $string = '';
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
index d91743e5c0da..7aed45bd4ace 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
@@ -35,24 +35,24 @@ class TextDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeRouteCollection(RouteCollection $routes, array $options = array())
+    protected function describeRouteCollection(RouteCollection $routes, array $options = [])
     {
         $showControllers = isset($options['show_controllers']) && $options['show_controllers'];
 
-        $tableHeaders = array('Name', 'Method', 'Scheme', 'Host', 'Path');
+        $tableHeaders = ['Name', 'Method', 'Scheme', 'Host', 'Path'];
         if ($showControllers) {
             $tableHeaders[] = 'Controller';
         }
 
-        $tableRows = array();
+        $tableRows = [];
         foreach ($routes->all() as $name => $route) {
-            $row = array(
+            $row = [
                 $name,
                 $route->getMethods() ? implode('|', $route->getMethods()) : 'ANY',
                 $route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY',
                 '' !== $route->getHost() ? $route->getHost() : 'ANY',
                 $route->getPath(),
-            );
+            ];
 
             if ($showControllers) {
                 $controller = $route->getDefault('_controller');
@@ -74,24 +74,24 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeRoute(Route $route, array $options = array())
+    protected function describeRoute(Route $route, array $options = [])
     {
-        $tableHeaders = array('Property', 'Value');
-        $tableRows = array(
-            array('Route Name', isset($options['name']) ? $options['name'] : ''),
-            array('Path', $route->getPath()),
-            array('Path Regex', $route->compile()->getRegex()),
-            array('Host', ('' !== $route->getHost() ? $route->getHost() : 'ANY')),
-            array('Host Regex', ('' !== $route->getHost() ? $route->compile()->getHostRegex() : '')),
-            array('Scheme', ($route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY')),
-            array('Method', ($route->getMethods() ? implode('|', $route->getMethods()) : 'ANY')),
-            array('Requirements', ($route->getRequirements() ? $this->formatRouterConfig($route->getRequirements()) : 'NO CUSTOM')),
-            array('Class', \get_class($route)),
-            array('Defaults', $this->formatRouterConfig($route->getDefaults())),
-            array('Options', $this->formatRouterConfig($route->getOptions())),
-        );
+        $tableHeaders = ['Property', 'Value'];
+        $tableRows = [
+            ['Route Name', isset($options['name']) ? $options['name'] : ''],
+            ['Path', $route->getPath()],
+            ['Path Regex', $route->compile()->getRegex()],
+            ['Host', ('' !== $route->getHost() ? $route->getHost() : 'ANY')],
+            ['Host Regex', ('' !== $route->getHost() ? $route->compile()->getHostRegex() : '')],
+            ['Scheme', ($route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY')],
+            ['Method', ($route->getMethods() ? implode('|', $route->getMethods()) : 'ANY')],
+            ['Requirements', ($route->getRequirements() ? $this->formatRouterConfig($route->getRequirements()) : 'NO CUSTOM')],
+            ['Class', \get_class($route)],
+            ['Defaults', $this->formatRouterConfig($route->getDefaults())],
+            ['Options', $this->formatRouterConfig($route->getOptions())],
+        ];
         if (isset($options['callable'])) {
-            $tableRows[] = array('Callable', $options['callable']);
+            $tableRows[] = ['Callable', $options['callable']];
         }
 
         $table = new Table($this->getOutput());
@@ -102,13 +102,13 @@ protected function describeRoute(Route $route, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameters(ParameterBag $parameters, array $options = array())
+    protected function describeContainerParameters(ParameterBag $parameters, array $options = [])
     {
-        $tableHeaders = array('Parameter', 'Value');
+        $tableHeaders = ['Parameter', 'Value'];
 
-        $tableRows = array();
+        $tableRows = [];
         foreach ($this->sortParameters($parameters) as $parameter => $value) {
-            $tableRows[] = array($parameter, $this->formatParameter($value));
+            $tableRows[] = [$parameter, $this->formatParameter($value)];
         }
 
         $options['output']->title('Symfony Container Parameters');
@@ -118,7 +118,7 @@ protected function describeContainerParameters(ParameterBag $parameters, array $
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerTags(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerTags(ContainerBuilder $builder, array $options = [])
     {
         $showPrivate = isset($options['show_private']) && $options['show_private'];
 
@@ -137,7 +137,7 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null)
     {
         if (!isset($options['id'])) {
             throw new \InvalidArgumentException('An "id" option must be provided.');
@@ -150,10 +150,10 @@ protected function describeContainerService($service, array $options = array(),
         } else {
             $options['output']->title(sprintf('Information for Service "<info>%s</info>"', $options['id']));
             $options['output']->table(
-                array('Service ID', 'Class'),
-                array(
-                    array(isset($options['id']) ? $options['id'] : '-', \get_class($service)),
-                )
+                ['Service ID', 'Class'],
+                [
+                    [isset($options['id']) ? $options['id'] : '-', \get_class($service)],
+                ]
             );
         }
     }
@@ -161,7 +161,7 @@ protected function describeContainerService($service, array $options = array(),
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerServices(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerServices(ContainerBuilder $builder, array $options = [])
     {
         $showPrivate = isset($options['show_private']) && $options['show_private'];
         $showTag = isset($options['tag']) ? $options['tag'] : null;
@@ -179,7 +179,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
         $options['output']->title($title);
 
         $serviceIds = isset($options['tag']) && $options['tag'] ? array_keys($builder->findTaggedServiceIds($options['tag'])) : $builder->getServiceIds();
-        $maxTags = array();
+        $maxTags = [];
 
         if (isset($options['filter'])) {
             $serviceIds = array_filter($serviceIds, $options['filter']);
@@ -217,8 +217,8 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
         $tagsCount = \count($maxTags);
         $tagsNames = array_keys($maxTags);
 
-        $tableHeaders = array_merge(array('Service ID'), $tagsNames, array('Class name'));
-        $tableRows = array();
+        $tableHeaders = array_merge(['Service ID'], $tagsNames, ['Class name']);
+        $tableRows = [];
         $rawOutput = isset($options['raw_text']) && $options['raw_text'];
         foreach ($this->sortServiceIds($serviceIds) as $serviceId) {
             $definition = $this->resolveServiceDefinition($builder, $serviceId);
@@ -227,24 +227,24 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
             if ($definition instanceof Definition) {
                 if ($showTag) {
                     foreach ($definition->getTag($showTag) as $key => $tag) {
-                        $tagValues = array();
+                        $tagValues = [];
                         foreach ($tagsNames as $tagName) {
                             $tagValues[] = isset($tag[$tagName]) ? $tag[$tagName] : '';
                         }
                         if (0 === $key) {
-                            $tableRows[] = array_merge(array($serviceId), $tagValues, array($definition->getClass()));
+                            $tableRows[] = array_merge([$serviceId], $tagValues, [$definition->getClass()]);
                         } else {
-                            $tableRows[] = array_merge(array('  "'), $tagValues, array(''));
+                            $tableRows[] = array_merge(['  "'], $tagValues, ['']);
                         }
                     }
                 } else {
-                    $tableRows[] = array($styledServiceId, $definition->getClass());
+                    $tableRows[] = [$styledServiceId, $definition->getClass()];
                 }
             } elseif ($definition instanceof Alias) {
                 $alias = $definition;
-                $tableRows[] = array_merge(array($styledServiceId, sprintf('alias for "%s"', $alias)), $tagsCount ? array_fill(0, $tagsCount, '') : array());
+                $tableRows[] = array_merge([$styledServiceId, sprintf('alias for "%s"', $alias)], $tagsCount ? array_fill(0, $tagsCount, '') : []);
             } else {
-                $tableRows[] = array_merge(array($styledServiceId, \get_class($definition)), $tagsCount ? array_fill(0, $tagsCount, '') : array());
+                $tableRows[] = array_merge([$styledServiceId, \get_class($definition)], $tagsCount ? array_fill(0, $tagsCount, '') : []);
             }
         }
 
@@ -254,20 +254,20 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerDefinition(Definition $definition, array $options = array())
+    protected function describeContainerDefinition(Definition $definition, array $options = [])
     {
         if (isset($options['id'])) {
             $options['output']->title(sprintf('Information for Service "<info>%s</info>"', $options['id']));
         }
 
-        $tableHeaders = array('Option', 'Value');
+        $tableHeaders = ['Option', 'Value'];
 
-        $tableRows[] = array('Service ID', isset($options['id']) ? $options['id'] : '-');
-        $tableRows[] = array('Class', $definition->getClass() ?: '-');
+        $tableRows[] = ['Service ID', isset($options['id']) ? $options['id'] : '-'];
+        $tableRows[] = ['Class', $definition->getClass() ?: '-'];
 
         $omitTags = isset($options['omit_tags']) && $options['omit_tags'];
         if (!$omitTags && ($tags = $definition->getTags())) {
-            $tagInformation = array();
+            $tagInformation = [];
             foreach ($tags as $tagName => $tagData) {
                 foreach ($tagData as $tagParameters) {
                     $parameters = array_map(function ($key, $value) {
@@ -286,51 +286,51 @@ protected function describeContainerDefinition(Definition $definition, array $op
         } else {
             $tagInformation = '-';
         }
-        $tableRows[] = array('Tags', $tagInformation);
+        $tableRows[] = ['Tags', $tagInformation];
 
         $calls = $defi
10000
nition->getMethodCalls();
         if (\count($calls) > 0) {
-            $callInformation = array();
+            $callInformation = [];
             foreach ($calls as $call) {
                 $callInformation[] = $call[0];
             }
-            $tableRows[] = array('Calls', implode(', ', $callInformation));
+            $tableRows[] = ['Calls', implode(', ', $callInformation)];
         }
 
-        $tableRows[] = array('Public', $definition->isPublic() && !$definition->isPrivate() ? 'yes' : 'no');
-        $tableRows[] = array('Synthetic', $definition->isSynthetic() ? 'yes' : 'no');
-        $tableRows[] = array('Lazy', $definition->isLazy() ? 'yes' : 'no');
-        $tableRows[] = array('Shared', $definition->isShared() ? 'yes' : 'no');
-        $tableRows[] = array('Abstract', $definition->isAbstract() ? 'yes' : 'no');
-        $tableRows[] = array('Autowired', $definition->isAutowired() ? 'yes' : 'no');
-        $tableRows[] = array('Autoconfigured', $definition->isAutoconfigured() ? 'yes' : 'no');
+        $tableRows[] = ['Public', $definition->isPublic() && !$definition->isPrivate() ? 'yes' : 'no'];
+        $tableRows[] = ['Synthetic', $definition->isSynthetic() ? 'yes' : 'no'];
+        $tableRows[] = ['Lazy', $definition->isLazy() ? 'yes' : 'no'];
+        $tableRows[] = ['Shared', $definition->isShared() ? 'yes' : 'no'];
+        $tableRows[] = ['Abstract', $definition->isAbstract() ? 'yes' : 'no'];
+        $tableRows[] = ['Autowired', $definition->isAutowired() ? 'yes' : 'no'];
+        $tableRows[] = ['Autoconfigured', $definition->isAutoconfigured() ? 'yes' : 'no'];
 
         // forward compatibility with DependencyInjection component in version 4.0
         if (method_exists($definition, 'getAutowiringTypes') && $autowiringTypes = $definition->getAutowiringTypes(false)) {
-            $tableRows[] = array('Autowiring Types', implode(', ', $autowiringTypes));
+            $tableRows[] = ['Autowiring Types', implode(', ', $autowiringTypes)];
         }
 
         if ($definition->getFile()) {
-            $tableRows[] = array('Required File', $definition->getFile() ?: '-');
+            $tableRows[] = ['Required File', $definition->getFile() ?: '-'];
         }
 
         if ($factory = $definition->getFactory()) {
             if (\is_array($factory)) {
                 if ($factory[0] instanceof Reference) {
-                    $tableRows[] = array('Factory Service', $factory[0]);
+                    $tableRows[] = ['Factory Service', $factory[0]];
                 } elseif ($factory[0] instanceof Definition) {
                     throw new \InvalidArgumentException('Factory is not describable.');
                 } else {
-                    $tableRows[] = array('Factory Class', $factory[0]);
+                    $tableRows[] = ['Factory Class', $factory[0]];
                 }
-                $tableRows[] = array('Factory Method', $factory[1]);
+                $tableRows[] = ['Factory Method', $factory[1]];
             } else {
-                $tableRows[] = array('Factory Function', $factory);
+                $tableRows[] = ['Factory Function', $factory];
             }
         }
 
         $showArguments = isset($options['show_arguments']) && $options['show_arguments'];
-        $argumentsInformation = array();
+        $argumentsInformation = [];
         if ($showArguments && ($arguments = $definition->getArguments())) {
             foreach ($arguments as $argument) {
                 if ($argument instanceof ServiceClosureArgument) {
@@ -347,7 +347,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
                 }
             }
 
-            $tableRows[] = array('Arguments', implode("\n", $argumentsInformation));
+            $tableRows[] = ['Arguments', implode("\n", $argumentsInformation)];
         }
 
         $options['output']->table($tableHeaders, $tableRows);
@@ -356,7 +356,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null)
     {
         $options['output']->comment(sprintf('This service is an alias for the service <info>%s</info>', (string) $alias));
 
@@ -364,26 +364,26 @@ protected function describeContainerAlias(Alias $alias, array $options = array()
             return;
         }
 
-        return $this->describeContainerDefinition($builder->getDefinition((string) $alias), array_merge($options, array('id' => (string) $alias)));
+        return $this->describeContainerDefinition($builder->getDefinition((string) $alias), array_merge($options, ['id' => (string) $alias]));
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameter($parameter, array $options = array())
+    protected function describeContainerParameter($parameter, array $options = [])
     {
         $options['output']->table(
-            array('Parameter', 'Value'),
-            array(
-                array($options['parameter'], $this->formatParameter($parameter),
-            ),
-        ));
+            ['Parameter', 'Value'],
+            [
+                [$options['parameter'], $this->formatParameter($parameter),
+            ],
+        ]);
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array())
+    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = [])
     {
         $event = array_key_exists('event', $options) ? $options['event'] : null;
 
@@ -410,19 +410,19 @@ protected function describeEventDispatcherListeners(EventDispatcherInterface $ev
     /**
      * {@inheritdoc}
      */
-    protected function describeCallable($callable, array $options = array())
+    protected function describeCallable($callable, array $options = [])
     {
         $this->writeText($this->formatCallable($callable), $options);
     }
 
     private function renderEventListenerTable(EventDispatcherInterface $eventDispatcher, $event, array $eventListeners, SymfonyStyle $io)
     {
-        $tableHeaders = array('Order', 'Callable', 'Priority');
-        $tableRows = array();
+        $tableHeaders = ['Order', 'Callable', 'Priority'];
+        $tableRows = [];
 
         $order = 1;
         foreach ($eventListeners as $order => $listener) {
-            $tableRows[] = array(sprintf('#%d', $order + 1), $this->formatCallable($listener), $eventDispatcher->getListenerPriority($event, $listener));
+            $tableRows[] = [sprintf('#%d', $order + 1), $this->formatCallable($listener), $eventDispatcher->getListenerPriority($event, $listener)];
         }
 
         $io->table($tableHeaders, $tableRows);
@@ -491,7 +491,7 @@ private function formatCallable($callable)
      * @param string $content
      * @param array  $options
      */
-    private function writeText($content, array $options = array())
+    private function writeText($content, array $options = [])
     {
         $this->write(
             isset($options['raw_text']) && $options['raw_text'] ? strip_tags($content) : $content,
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
index b663e762212b..38efe8575354 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
@@ -32,7 +32,7 @@ class XmlDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeRouteCollection(RouteCollection $routes, array $options = array())
+    protected function describeRouteCollection(RouteCollection $routes, array $options = [])
     {
         $this->writeDocument($this->getRouteCollectionDocument($routes));
     }
@@ -40,7 +40,7 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeRoute(Route $route, array $options = array())
+    protected function describeRoute(Route $route, array $options = [])
     {
         $this->writeDocument($this->getRouteDocument($route, isset($options['name']) ? $options['name'] : null));
     }
@@ -48,7 +48,7 @@ protected function describeRoute(Route $route, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameters(ParameterBag $parameters, array $options = array())
+    protected function describeContainerParameters(ParameterBag $parameters, array $options = [])
     {
         $this->writeDocument($this->getContainerParametersDocument($parameters));
     }
@@ -56,7 +56,7 @@ protected function describeContainerParameters(ParameterBag $parameters, array $
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerTags(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerTags(ContainerBuilder $builder, array $options = [])
     {
         $this->writeDocument($this->getContainerTagsDocument($builder, isset($options['show_private']) && $options['show_private']));
     }
@@ -64,7 +64,7 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null)
     {
         if (!isset($options['id'])) {
             throw new \InvalidArgumentException('An "id" option must be provided.');
@@ -76,7 +76,7 @@ protected function describeContainerService($service, array $options = array(),
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerServices(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerServices(ContainerBuilder $builder, array $options = [])
     {
         $this->writeDocument($this->getContainerServicesDocument($builder, isset($options['tag']) ? $options['tag'] : null, isset($options['show_private']) && $options['show_private'], isset($options['show_arguments']) && $options['show_arguments'], isset($options['filter']) ? $options['filter'] : null));
     }
@@ -84,7 +84,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerDefinition(Definition $definition, array $options = array())
+    protected function describeContainerDefinition(Definition $definition, array $options = [])
     {
         $this->writeDocument($this->getContainerDefinitionDocument($definition, isset($options['id']) ? $options['id'] : null, isset($options['omit_tags']) && $options['omit_tags'], isset($options['show_arguments']) && $options['show_arguments']));
     }
@@ -92,7 +92,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null)
     {
         $dom = new \DOMDocument('1.0', 'UTF-8');
         $dom->appendChild($dom->importNode($this->getContainerAliasDocument($alias, isset($options['id']) ? $options['id'] : null)->childNodes->item(0), true));
@@ -109,7 +109,7 @@ protected function describeContainerAlias(Alias $alias, array $options = array()
     /**
      * {@inheritdoc}
      */
-    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array())
+    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = [])
     {
         $this->writeDocument($this->getEventDispatcherListenersDocument($eventDispatcher, array_key_exists('event', $options) ? $options['event'] : null));
     }
@@ -117,7 +117,7 @@ protected function describeEventDispatcherListeners(EventDispatcherInterface $ev
     /**
      * {@inheritdoc}
      */
-    protected function describeCallable($callable, array $options = array())
+    protected function describeCallable($callable, array $options = [])
     {
         $this->writeDocument($this->getCallableDocument($callable));
     }
@@ -125,7 +125,7 @@ protected function describeCallable($callable, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameter($parameter, array $options = array())
+    protected function describeContainerParameter($parameter, array $options = [])
     {
         $this->writeDocument($this->getContainerParameterDocument($parameter, $options));
     }
@@ -413,7 +413,7 @@ private function getContainerDefinitionDocument(Definition $definition, $id = nu
      */
     private function getArgumentNodes(array $arguments, \DOMDocument $dom)
     {
-        $nodes = array();
+        $nodes = [];
 
         foreach ($arguments as $argumentKey => $argument) {
             $argumentXML = $dom->createElement('argument');
@@ -477,7 +477,7 @@ private function getContainerAliasDocument(Alias $alias, $id = null)
     /**
      * @return \DOMDocument
      */
-    private function getContainerParameterDocument($parameter, $options = array())
+    private function getContainerParameterDocument($parameter, $options = [])
     {
         $dom = new \DOMDocument('1.0', 'UTF-8');
         $dom->appendChild($parameterXML = $dom->createElement('parameter'));
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php b/src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php
index b2c72fa6f599..2d0944e19e1e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php
@@ -54,7 +54,7 @@ public function setContainer(ContainerInterface $container)
 
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             'router' => '?'.RouterInterface::class,
             'request_stack' => '?'.RequestStack::class,
             'http_kernel' => '?'.HttpKernelInterface::class,
@@ -67,6 +67,6 @@ public static function getSubscribedServices()
             'form.factory' => '?'.FormFactoryInterface::class,
             'security.token_storage' => '?'.TokenStorageInterface::class,
             'security.csrf.token_manager' => '?'.CsrfTokenManagerInterface::class,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerNameParser.php b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerNameParser.php
index cc988ba43f48..3a758ee20249 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerNameParser.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerNameParser.php
@@ -49,7 +49,7 @@ public function parse($controller)
         $originalController = $controller;
         list($bundle, $controller, $action) = $parts;
         $controller = str_replace('/', '\\', $controller);
-        $bundles = array();
+        $bundles = [];
 
         try {
             // this throws an exception if there is no such bundle
@@ -70,7 +70,7 @@ public function parse($controller)
 
         if (!\is_array($allBundles)) {
             // happens when HttpKernel is version 4+
-            $allBundles = array($allBundles);
+            $allBundles = [$allBundles];
         }
 
         foreach ($allBundles as $b) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
index e9454f608ab5..78e2bd60033f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
@@ -80,7 +80,7 @@ protected function get($id)
      *
      * @final since version 3.4
      */
-    protected function generateUrl($route, $parameters = array(), $referenceType = UrlGeneratorInterface::ABSOLUTE_PATH)
+    protected function generateUrl($route, $parameters = [], $referenceType = UrlGeneratorInterface::ABSOLUTE_PATH)
     {
         return $this->container->get('router')->generate($route, $parameters, $referenceType);
     }
@@ -96,7 +96,7 @@ protected function generateUrl($route, $parameters = array(), $referenceType = U
      *
      * @final since version 3.4
      */
-    protected function forward($controller, array $path = array(), array $query = array())
+    protected function forward($controller, array $path = [], array $query = [])
     {
         $request = $this->container->get('request_stack')->getCurrentRequest();
         $path['_forwarded'] = $request->attributes;
@@ -132,7 +132,7 @@ protected function redirect($url, $status = 302)
      *
      * @final since version 3.4
      */
-    protected function redirectToRoute($route, array $parameters = array(), $status = 302)
+    protected function redirectToRoute($route, array $parameters = [], $status = 302)
     {
         return $this->redirect($this->generateUrl($route, $parameters), $status);
     }
@@ -149,12 +149,12 @@ protected function redirectToRoute($route, array $parameters = array(), $status
      *
      * @final since version 3.4
      */
-    protected function json($data, $status = 200, $headers = array(), $context = array())
+    protected function json($data, $status = 200, $headers = [], $context = [])
     {
         if ($this->container->has('serializer')) {
-            $json = $this->container->get('serializer')->serialize($data, 'json', array_merge(array(
+            $json = $this->container->get('serializer')->serialize($data, 'json', array_merge([
                 'json_encode_options' => JsonResponse::DEFAULT_ENCODING_OPTIONS,
-            ), $context));
+            ], $context));
 
             return new JsonResponse($json, $status, $headers, true);
         }
@@ -254,7 +254,7 @@ protected function denyAccessUnlessGranted($attributes, $subject = null, $messag
      *
      * @final since version 3.4
      */
-    protected function renderView($view, array $parameters = array())
+    protected function renderView($view, array $parameters = [])
     {
         if ($this->container->has('templating')) {
             return $this->container->get('templating')->render($view, $parameters);
@@ -278,7 +278,7 @@ protected function renderView($view, array $parameters = array())
      *
      * @final since version 3.4
      */
-    protected function render($view, array $parameters = array(), Response $response = null)
+    protected function render($view, array $parameters = [], Response $response = null)
     {
         if ($this->container->has('templating')) {
             $content = $this->container->get('templating')->render($view, $parameters);
@@ -308,7 +308,7 @@ protected function render($view, array $parameters = array(), Response $response
      *
      * @final since version 3.4
      */
-    protected function stream($view, array $parameters = array(), StreamedResponse $response = null)
+    protected function stream($view, array $parameters = [], StreamedResponse $response = null)
     {
         if ($this->container->has('templating')) {
             $templating = $this->container->get('templating');
@@ -390,7 +390,7 @@ protected function createAccessDeniedException($message = 'Access Denied.', \Exc
      *
      * @final since version 3.4
      */
-    protected function createForm($type, $data = null, array $options = array())
+    protected function createForm($type, $data = null, array $options = [])
     {
         return $this->container->get('form.factory')->create($type, $data, $options);
     }
@@ -405,7 +405,7 @@ protected function createForm($type, $data = null, array $options = array())
      *
      * @final since version 3.4
      */
-    protected function createFormBuilder($data = null, array $options = array())
+    protected function createFormBuilder($data = null, array $options = [])
     {
         return $this->container->get('form.factory')->createBuilder(FormType::class, $data, $options);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php b/src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php
index ae6b6d741962..244e8a0f355a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php
@@ -79,7 +79,7 @@ public function redirectAction(Request $request, $route, $permanent = false, $ig
             throw new HttpException($permanent ? 410 : 404);
         }
 
-        $attributes = array();
+        $attributes = [];
         if (false === $ignoreAttributes || \is_array($ignoreAttributes)) {
             $attributes = $request->attributes->get('_route_params');
             unset($attributes['route'], $attributes['permanent'], $attributes['ignoreAttributes']);
diff --git a/src/Symfony/Bundle/FrameworkBundle/DataCollector/RequestDataCollector.php b/src/Symfony/Bundle/FrameworkBundle/DataCollector/RequestDataCollector.php
index f71fc83941bf..3beb8b7e9de2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DataCollector/RequestDataCollector.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DataCollector/RequestDataCollector.php
@@ -38,10 +38,10 @@ public function collect(Request $request, Response $response, \Exception $except
             }
         }
         if ($request->attributes->has('_forward_controller')) {
-            $this->data['forward'] = array(
+            $this->data['forward'] = [
                 'token' => $request->attributes->get('_forward_token'),
                 'controller' => $this->parseController($request->attributes->get('_forward_controller')),
-            );
+            ];
         }
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheClearerPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheClearerPass.php
index deaa6f427c86..4e0570b79bae 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheClearerPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheClearerPass.php
@@ -35,7 +35,7 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $clearers = array();
+        $clearers = [];
         foreach ($container->findTaggedServiceIds('kernel.cache_clearer', true) as $id => $attributes) {
             $clearers[] = new Reference($id);
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddDebugLogProcessorPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddDebugLogProcessorPass.php
index 69038cf92f97..b4da14501040 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddDebugLogProcessorPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddDebugLogProcessorPass.php
@@ -30,6 +30,6 @@ public function process(ContainerBuilder $container)
         }
 
         $definition = $container->getDefinition('monolog.logger_prototype');
-        $definition->addMethodCall('pushProcessor', array(new Reference('debug.log_processor')));
+        $definition->addMethodCall('pushProcessor', [new Reference('debug.log_processor')]);
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddExpressionLanguageProvidersPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddExpressionLanguageProvidersPass.php
index a5bdfd626fae..77c070059983 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddExpressionLanguageProvidersPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddExpressionLanguageProvidersPass.php
@@ -31,7 +31,7 @@ public function process(ContainerBuilder $container)
         if ($container->has('router')) {
             $definition = $container->findDefinition('router');
             foreach ($container->findTaggedServiceIds('routing.expression_language_provider', true) as $id => $attributes) {
-                $definition->addMethodCall('addExpressionLanguageProvider', array(new Reference($id)));
+                $definition->addMethodCall('addExpressionLanguageProvider', [new Reference($id)]);
             }
         }
 
@@ -39,7 +39,7 @@ public function process(ContainerBuilder $container)
         if ($container->has('security.expression_language')) {
             $definition = $container->findDefinition('security.expression_language');
             foreach ($container->findTaggedServiceIds('security.expression_language_provider', true) as $id => $attributes) {
-                $definition->addMethodCall('registerProvider', array(new Reference($id)));
+                $definition->addMethodCall('registerProvider', [new Reference($id)]);
             }
         }
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CacheCollectorPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CacheCollectorPass.php
index 60cdadb49b25..7f8494d98e0a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CacheCollectorPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CacheCollectorPass.php
@@ -45,21 +45,21 @@ public function process(ContainerBuilder $container)
             $recorder = new Definition(is_subclass_of($definition->getClass(), TagAwareAdapterInterface::class) ? TraceableTagAwareAdapter::class : TraceableAdapter::class);
             $recorder->setTags($definition->getTags());
             $recorder->setPublic($definition->isPublic());
-            $recorder->setArguments(array(new Reference($innerId = $id.'.recorder_inner')));
+            $recorder->setArguments([new Reference($innerId = $id.'.recorder_inner')]);
 
-            $definition->setTags(array());
+            $definition->setTags([]);
             $definition->setPublic(false);
 
             if (method_exists($definition, 'getAutowiringTypes') && $types = $definition->getAutowiringTypes(false)) {
                 $recorder->setAutowiringTypes($types);
-                $definition->setAutowiringTypes(array());
+                $definition->setAutowiringTypes([]);
             }
 
             $container->setDefinition($innerId, $definition);
             $container->setDefinition($id, $recorder);
 
             // Tell the collector to add the new instance
-            $collectorDefinition->addMethodCall('addInstance', array($id, new Reference($id)));
+            $collectorDefinition->addMethodCall('addInstance', [$id, new Reference($id)]);
             $collectorDefinition->setPublic(false);
         }
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolClearerPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolClearerPass.php
index bd6908b9c450..9f9b907b24c1 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolClearerPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolClearerPass.php
@@ -29,7 +29,7 @@ public function process(ContainerBuilder $container)
 
         foreach ($container->findTaggedServiceIds('cache.pool.clearer') as $id => $attr) {
             $clearer = $container->getDefinition($id);
-            $pools = array();
+            $pools = [];
             foreach ($clearer->getArgument(0) as $id => $ref) {
                 if ($container->hasDefinition($id)) {
                     $pools[$id] = new Reference($id);
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolPass.php
index e4c55a904586..04ceb7563066 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolPass.php
@@ -37,14 +37,14 @@ public function process(ContainerBuilder $container)
         }
         $seed .= '.'.$container->getParameter('kernel.name').'.'.$container->getParameter('kernel.environment');
 
-        $pools = array();
-        $clearers = array();
-        $attributes = array(
+        $pools = [];
+        $clearers = [];
+        $attributes = [
             'provider',
             'namespace',
             'default_lifetime',
             'reset',
-        );
+        ];
         foreach ($container->findTaggedServiceIds('cache.pool') as $id => $tags) {
             $adapter = $pool = $container->getDefinition($id);
             if ($pool->isAbstract()) {
@@ -78,7 +78,7 @@ public function process(ContainerBuilder $container)
                     // no-op
                 } elseif ('reset' === $attr) {
                     if ($tags[0][$attr]) {
-                        $pool->addTag('kernel.reset', array('method' => $tags[0][$attr]));
+                        $pool->addTag('kernel.reset', ['method' => $tags[0][$attr]]);
                     }
                 } elseif ('namespace' !== $attr || ArrayAdapter::class !== $adapter->getClass()) {
                     $pool->replaceArgument($i++, $tags[0][$attr]);
@@ -137,8 +137,8 @@ public static function getServiceProvider(ContainerBuilder $container, $name)
             if (!$container->hasDefinition($name = 'cache_connection.'.ContainerBuilder::hash($dsn))) {
                 $definition = new Definition(AbstractAdapter::class);
                 $definition->setPublic(false);
-                $definition->setFactory(array(AbstractAdapter::class, 'createConnection'));
-                $definition->setArguments(array($dsn, array('lazy' => true)));
+                $definition->setFactory([AbstractAdapter::class, 'createConnection']);
+                $definition->setArguments([$dsn, ['lazy' => true]]);
                 $container->setDefinition($name, $definition);
             }
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolPrunerPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolPrunerPass.php
index 728a38247884..597f7dc06ee6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolPrunerPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CachePoolPrunerPass.php
@@ -41,7 +41,7 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $services = array();
+        $services = [];
 
         foreach ($container->findTaggedServiceIds($this->cachePoolTag) as $id => $tags) {
             $class = $container->getParameterBag()->resolveValue($container->getDefinition($id)->getClass());
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/FormPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/FormPass.php
index a63ece1f26e2..0b8a1fcd6376 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/FormPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/FormPass.php
@@ -39,7 +39,7 @@ public function process(ContainerBuilder $container)
         $definition = $container->getDefinition('form.extension');
 
         // Builds an array with fully-qualified type class names as keys and service IDs as values
-        $types = array();
+        $types = [];
 
         foreach ($container->findTaggedServiceIds('form.type') as $serviceId => $tag) {
             $serviceDefinition = $container->getDefinition($serviceId);
@@ -53,7 +53,7 @@ public function process(ContainerBuilder $container)
 
         $definition->replaceArgument(1, $types);
 
-        $typeExtensions = array();
+        $typeExtensions = [];
 
         foreach ($this->findAndSortTaggedServices('form.type_extension', $container) as $reference) {
             $serviceId = (string) $reference;
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/LoggingTranslatorPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/LoggingTranslatorPass.php
index 4945e1c12e6c..88660356376e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/LoggingTranslatorPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/LoggingTranslatorPass.php
@@ -47,7 +47,7 @@ public function process(ContainerBuilder $container)
                         $warmer->addTag('container.service_subscriber', $v);
                     }
                 }
-                $warmer->addTag('container.service_subscriber', array('key' => 'translator', 'id' => 'translator.logging.inner'));
+                $warmer->addTag('container.service_subscriber', ['key' => 'translator', 'id' => 'translator.logging.inner']);
             }
         }
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ProfilerPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ProfilerPass.php
index 8e15979a90e3..357c079c4aa0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ProfilerPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ProfilerPass.php
@@ -41,15 +41,15 @@ public function process(ContainerBuilder $container)
                 if (!isset($attributes[0]['id'])) {
                     throw new InvalidArgumentException(sprintf('Data collector service "%s" must have an id attribute in order to specify a template', $id));
                 }
-                $template = array($attributes[0]['id'], $attributes[0]['template']);
+                $template = [$attributes[0]['id'], $attributes[0]['template']];
             }
 
-            $collectors->insert(array($id, $template), array($priority, --$order));
+            $collectors->insert([$id, $template], [$priority, --$order]);
         }
 
-        $templates = array();
+        $templates = [];
         foreach ($collectors as $collector) {
-            $definition->addMethodCall('add', array(new Reference($collector[0])));
+            $definition->addMethodCall('add', [new Reference($collector[0])]);
             $templates[$collector[0]] = $collector[1];
         }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TemplatingPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TemplatingPass.php
index 8de51211d379..4eff0b6c8eb6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TemplatingPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TemplatingPass.php
@@ -32,8 +32,8 @@ public function process(ContainerBuilder $container)
         }
 
         if ($container->hasDefinition('templating.engine.php')) {
-            $refs = array();
-            $helpers = array();
+            $refs = [];
+            $helpers = [];
             foreach ($container->findTaggedServiceIds('templating.helper', true) as $id => $attributes) {
                 if (isset($attributes[0]['alias'])) {
                     $helpers[$attributes[0]['alias']] = $id;
@@ -43,7 +43,7 @@ public function process(ContainerBuilder $container)
 
             if (\count($helpers) > 0) {
                 $definition = $container->getDefinition('templating.engine.php');
-                $definition->addMethodCall('setHelpers', array($helpers));
+                $definition->addMethodCall('setHelpers', [$helpers]);
 
                 if ($container->hasDefinition('templating.engine.php.helpers_locator')) {
                     $container->getDefinition('templating.engine.php.helpers_locator')->replaceArgument(0, $refs);
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php
index 264bde0564f2..606fbd045355 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php
@@ -21,7 +21,7 @@
  */
 class UnusedTagsPass implements CompilerPassInterface
 {
-    private $whitelist = array(
+    private $whitelist = [
         'annotations.cached_reader',
         'cache.pool.clearer',
         'console.command',
@@ -55,7 +55,7 @@ class UnusedTagsPass implements CompilerPassInterface
         'twig.loader',
         'validator.constraint_validator',
         'validator.initializer',
-    );
+    ];
 
     public function process(ContainerBuilder $container)
     {
@@ -68,7 +68,7 @@ public function process(ContainerBuilder $container)
             }
 
             // check for typos
-            $candidates = array();
+            $candidates = [];
             foreach ($tags as $definedTag) {
                 if ($definedTag === $tag) {
                     continue;
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/WorkflowGuardListenerPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/WorkflowGuardListenerPass.php
index c5498adc4728..ad62e1938497 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/WorkflowGuardListenerPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/WorkflowGuardListenerPass.php
@@ -32,12 +32,12 @@ public function process(ContainerBuilder $container)
 
         $container->getParameterBag()->remove('workflow.has_guard_listeners');
 
-        $servicesNeeded = array(
+        $servicesNeeded = [
             'security.token_storage',
             'security.authorization_checker',
             'security.authentication.trust_resolver',
             'security.role_hierarchy',
-        );
+        ];
 
         foreach ($servicesNeeded as $service) {
             if (!$container->has($service)) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
index 29086735e3fd..6a6441a39c86 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -60,7 +60,7 @@ public function getConfigTreeBuilder()
             ->beforeNormalization()
                 ->ifTrue(function ($v) { return !isset($v['assets']) && isset($v['templating']) && class_exists(Package::class); })
                 ->then(function ($v) {
-                    $v['assets'] = array();
+                    $v['assets'] = [];
 
                     return $v;
                 })
@@ -77,7 +77,7 @@ public function getConfigTreeBuilder()
                         ->ifTrue(function ($v) {
                             return !\is_array($v) && null !== $v;
                         })
-                        ->then(function ($v) { return \is_bool($v) ? array() : preg_split('/\s*,\s*/', $v); })
+                        ->then(function ($v) { return \is_bool($v) ? [] : preg_split('/\s*,\s*/', $v); })
                     ->end()
                     ->prototype('scalar')
                         ->validate()
@@ -108,7 +108,7 @@ public function getConfigTreeBuilder()
                 ->booleanNode('test')->end()
                 ->scalarNode('default_locale')->defaultValue('en')->end()
                 ->arrayNode('trusted_hosts')
-                    ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                    ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                     ->prototype('scalar')->end()
                 ->end()
             ->end()
@@ -145,9 +145,9 @@ private function addCsrfSection(ArrayNodeDefinition $rootNode)
         $rootNode
             ->children()
                 ->arrayNode('csrf_protection')
-                    ->treatFalseLike(array('enabled' => false))
-                    ->treatTrueLike(array('enabled' => true))
-                    ->treatNullLike(array('enabled' => true))
+                    ->treatFalseLike(['enabled' => false])
+                    ->treatTrueLike(['enabled' => true])
+                    ->treatNullLike(['enabled' => true])
                     ->addDefaultsIfNotSet()
                     ->children()
                         // defaults to framework.session.enabled && !class_exists(FullStack::class) && interface_exists(CsrfTokenManagerInterface::class)
@@ -167,9 +167,9 @@ private function addFormSection(ArrayNodeDefinition $rootNode)
                     ->{!class_exists(FullStack::class) && class_exists(Form::class) ? 'canBeDisabled' : 'canBeEnabled'}()
                     ->children()
                         ->arrayNode('csrf_protection')
-                            ->treatFalseLike(array('enabled' => false))
-                            ->treatTrueLike(array('enabled' => true))
-                            ->treatNullLike(array('enabled' => true))
+                            ->treatFalseLike(['enabled' => false])
+                            ->treatTrueLike(['enabled' => true])
+                            ->treatNullLike(['enabled' => true])
                             ->addDefaultsIfNotSet()
                             ->children()
                                 ->booleanNode('enabled')->defaultNull()->end() // defaults to framework.csrf_protection.enabled
@@ -244,7 +244,7 @@ private function addProfilerSection(ArrayNodeDefinition $rootNode)
                                 ->end()
                                 ->scalarNode('service')->end()
                                 ->arrayNode('ips')
-                                    ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                                    ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                                     ->prototype('scalar')->end()
                                 ->end()
                             ->end()
@@ -269,10 +269,10 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                 unset($workflows['enabled']);
 
                                 if (1 === \count($workflows) && isset($workflows[0]['enabled']) && 1 === \count($workflows[0])) {
-                                    $workflows = array();
+                                    $workflows = [];
                                 }
 
-                                if (1 === \count($workflows) && isset($workflows['workflows']) && array_keys($workflows['workflows']) !== range(0, \count($workflows) - 1) && !empty(array_diff(array_keys($workflows['workflows']), array('audit_trail', 'type', 'marking_store', 'supports', 'support_strategy', 'initial_place', 'places', 'transitions')))) {
+                                if (1 === \count($workflows) && isset($workflows['workflows']) && array_keys($workflows['workflows']) !== range(0, \count($workflows) - 1) && !empty(array_diff(array_keys($workflows['workflows']), ['audit_trail', 'type', 'marking_store', 'supports', 'support_strategy', 'initial_place', 'places', 'transitions']))) {
                                     $workflows = $workflows['workflows'];
                                 }
 
@@ -284,10 +284,10 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                     unset($workflows[$key]['enabled']);
                                 }
 
-                                $v = array(
+                                $v = [
                                     'enabled' => true,
                                     'workflows' => $workflows,
-                                );
+                                ];
                             }
 
                             return $v;
@@ -305,18 +305,18 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                         ->canBeEnabled()
                                     ->end()
                                     ->enumNode('type')
-                                        ->values(array('workflow', 'state_machine'))
+                                        ->values(['workflow', 'state_machine'])
                                     ->end()
                                     ->arrayNode('marking_store')
                                         ->fixXmlConfig('argument')
                                         ->children()
                                             ->enumNode('type')
-                                                ->values(array('multiple_state', 'single_state'))
+                                                ->values(['multiple_state', 'single_state'])
                                             ->end()
                                             ->arrayNode('arguments')
                                                 ->beforeNormalization()
                                                     ->ifString()
-                                                    ->then(function ($v) { return array($v); })
+                                                    ->then(function ($v) { return [$v]; })
                                                 ->end()
                                                 ->requiresAtLeastOneElement()
                                                 ->prototype('scalar')
@@ -338,7 +338,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                     ->arrayNode('supports')
                                         ->beforeNormalization()
                                             ->ifString()
-                                            ->then(function ($v) { return array($v); })
+                                            ->then(function ($v) { return [$v]; })
                                         ->end()
                                         ->prototype('scalar')
                                             ->cannotBeEmpty()
@@ -397,7 +397,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->arrayNode('from')
                                                     ->beforeNormalization()
                                                         ->ifString()
-                                                        ->then(function ($v) { return array($v); })
+                                                        ->then(function ($v) { return [$v]; })
                                                     ->end()
                                                     ->requiresAtLeastOneElement()
                                                     ->prototype('scalar')
@@ -407,7 +407,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->arrayNode('to')
                                                     ->beforeNormalization()
                                                         ->ifString()
-                                                        ->then(function ($v) { return array($v); })
+                                                        ->then(function ($v) { return [$v]; })
                                                     ->end()
                                                     ->requiresAtLeastOneElement()
                                                     ->prototype('scalar')
@@ -527,7 +527,7 @@ private function addRequestSection(ArrayNodeDefinition $rootNode)
                                 ->end()
                                 ->beforeNormalization()
                                     ->ifTrue(function ($v) { return !\is_array($v); })
-                                    ->then(function ($v) { return array($v); })
+                                    ->then(function ($v) { return [$v]; })
                                 ->end()
                                 ->prototype('scalar')->end()
                             ->end()
@@ -547,7 +547,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                     ->canBeEnabled()
                     ->beforeNormalization()
                         ->ifTrue(function ($v) { return false === $v || \is_array($v) && false === $v['enabled']; })
-                        ->then(function () { return array('enabled' => false, 'engines' => false); })
+                        ->then(function () { return ['enabled' => false, 'engines' => false]; })
                     ->end()
                     ->children()
                         ->scalarNode('hinclude_default_template')->defaultNull()->end()
@@ -562,7 +562,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                                     ->validate()
                                         ->ifTrue(function ($v) {return !\in_array('FrameworkBundle:Form', $v); })
                                         ->then(function ($v) {
-                                            return array_merge(array('FrameworkBundle:Form'), $v);
+                                            return array_merge(['FrameworkBundle:Form'], $v);
                                         })
                                     ->end()
                                 ->end()
@@ -572,13 +572,13 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                     ->fixXmlConfig('engine')
                     ->children()
                         ->arrayNode('engines')
-                            ->example(array('twig'))
+                            ->example(['twig'])
                             ->isRequired()
                             ->requiresAtLeastOneElement()
                             ->canBeUnset()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v) && false !== $v; })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                             ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -588,7 +588,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                         ->arrayNode('loaders')
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                              ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -616,7 +616,7 @@ private function addAssetsSection(ArrayNodeDefinition $rootNode)
                             ->requiresAtLeastOneElement()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                             ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -660,7 +660,7 @@ private function addAssetsSection(ArrayNodeDefinition $rootNode)
                                         ->requiresAtLeastOneElement()
                                         ->beforeNormalization()
                                             ->ifTrue(function ($v) { return !\is_array($v); })
-                                            ->then(function ($v) { return array($v); })
+                                            ->then(function ($v) { return [$v]; })
                                         ->end()
                                         ->prototype('scalar')->end()
                                     ->end()
@@ -702,9 +702,9 @@ private function addTranslatorSection(ArrayNodeDefinition $rootNode)
                     ->fixXmlConfig('path')
                     ->children()
                         ->arrayNode('fallbacks')
-                            ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                            ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                             ->prototype('scalar')->end()
-                            ->defaultValue(array('en'))
+                            ->defaultValue(['en'])
                         ->end()
                         ->booleanNode('logging')->defaultValue($this->debug)->end()
                         ->scalarNode('formatter')->defaultValue('translator.formatter.default')->end()
@@ -744,9 +744,9 @@ private function addValidationSection(ArrayNodeDefinition $rootNode)
                         ->end()
                         ->booleanNode('enable_annotations')->{!class_exists(FullStack::class) && class_exists(Annotation::class) ? 'defaultTrue' : 'defaultFalse'}()->end()
                         ->arrayNode('static_method')
-                            ->defaultValue(array('loadValidatorMetadata'))
+                            ->defaultValue(['loadValidatorMetadata'])
                             ->prototype('scalar')->end()
-                            ->treatFalseLike(array())
+                            ->treatFalseLike([])
                             ->validate()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
                                 ->then(function ($v) { return (array) $v; })
@@ -925,7 +925,7 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                     ->info('Lock configuration')
                     ->{!class_exists(FullStack::class) && class_exists(Lock::class) ? 'canBeDisabled' : 'canBeEnabled'}()
                     ->beforeNormalization()
-                        ->ifString()->then(function ($v) { return array('enabled' => true, 'resources' => $v); })
+                        ->ifString()->then(function ($v) { return ['enabled' => true, 'resources' => $v]; })
                     ->end()
                     ->beforeNormalization()
                         ->ifTrue(function ($v) { return \is_array($v) && !isset($v['resources']); })
@@ -933,7 +933,7 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                             $e = $v['enabled'];
                             unset($v['enabled']);
 
-                            return array('enabled' => $e, 'resources' => $v);
+                            return ['enabled' => $e, 'resources' => $v];
                         })
                     ->end()
                     ->addDefaultsIfNotSet()
@@ -941,16 +941,16 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                     ->children()
                         ->arrayNode('resources')
                             ->requiresAtLeastOneElement()
-                            ->defaultValue(array('default' => array(class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock')))
+                            ->defaultValue(['default' => [class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock']])
                             ->beforeNormalization()
-                                ->ifString()->then(function ($v) { return array('default' => $v); })
+                                ->ifString()->then(function ($v) { return ['default' => $v]; })
                             ->end()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return \is_array($v) && array_keys($v) === range(0, \count($v) - 1); })
-                                ->then(function ($v) { return array('default' => $v); })
+                                ->then(function ($v) { return ['default' => $v]; })
                             ->end()
                             ->prototype('array')
-                                ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                                ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                                 ->prototype('scalar')->end()
                             ->end()
                         ->end()
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index a7b7beaa7281..a46e552a255e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -131,7 +131,7 @@ public function load(array $configs, ContainerBuilder $container)
         if (!class_exists(ContainerAwareEventDispatcher::class)) {
             $definition = $container->getDefinition('event_dispatcher');
             $definition->setClass(EventDispatcher::class);
-            $definition->setArguments(array());
+            $definition->setArguments([]);
         }
 
         if (\PHP_VERSION_ID < 70000) {
@@ -204,13 +204,13 @@ public function load(array $configs, ContainerBuilder $container)
 
         if (!$container->hasParameter('debug.file_link_format')) {
             if (!$container->hasParameter('templating.helper.code.file_link_format')) {
-                $links = array(
+                $links = [
                     'textmate' => 'txmt://open?url=file://%%f&line=%%l',
                     'macvim' => 'mvim://open?url=file://%%f&line=%%l',
                     'emacs' => 'emacs://open?url=file://%%f&line=%%l',
                     'sublime' => 'subl://open?url=file://%%f&line=%%l',
                     'phpstorm' => 'phpstorm://open?file=%%f&line=%%l',
-                );
+                ];
                 $ide = $config['ide'];
 
                 $container->setParameter('templating.helper.code.file_link_format', str_replace('%', '%%', ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format')) ?: (isset($links[$ide]) ? $links[$ide] : $ide));
@@ -317,14 +317,14 @@ public function load(array $configs, ContainerBuilder $container)
             $loader->load('web_link.xml');
         }
 
-        $this->addAnnotatedClassesToCompile(array(
+        $this->addAnnotatedClassesToCompile([
             '**\\Controller\\',
             '**\\Entity\\',
 
             // Added explicitly so that we don't rely on the class map being dumped to make it work
             'Symfony\\Bundle\\FrameworkBundle\\Controller\\AbstractController',
             'Symfony\\Bundle\\FrameworkBundle\\Controller\\Controller',
-        ));
+        ]);
 
         $container->registerForAutoconfiguration(Command::class)
             ->addTag('console.command');
@@ -353,7 +353,7 @@ public function load(array $configs, ContainerBuilder $container)
         $container->registerForAutoconfiguration(EventSubscriberInterface::class)
             ->addTag('kernel.event_subscriber');
         $container->registerForAutoconfiguration(ResettableInterface::class)
-            ->addTag('kernel.reset', array('method' => 'reset'));
+            ->addTag('kernel.reset', ['method' => 'reset']);
         $container->registerForAutoconfiguration(PropertyListExtractorInterface::class)
             ->addTag('property_info.list_extractor');
         $container->registerForAutoconfiguration(PropertyTypeExtractorInterface::class)
@@ -377,11 +377,11 @@ public function load(array $configs, ContainerBuilder $container)
 
         if (!$container->getParameter('kernel.debug')) {
             // remove tagged iterator argument for resource checkers
-            $container->getDefinition('config_cache_factory')->setArguments(array());
+            $container->getDefinition('config_cache_factory')->setArguments([]);
         }
 
         if (\PHP_VERSION_ID < 70000) {
-            $this->addClassesToCompile(array(
+            $this->addClassesToCompile([
                 'Symfony\\Component\\Config\\ConfigCache',
                 'Symfony\\Component\\Config\\FileLocator',
 
@@ -418,7 +418,7 @@ public function load(array $configs, ContainerBuilder $container)
 
                 // cannot be included as commands are discovered based on the path to this class via Reflection
                 // 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle',
-            ));
+            ]);
         }
     }
 
@@ -511,7 +511,7 @@ private function registerProfilerConfiguration(array $config, ContainerBuilder $
     {
         if (!$this->isConfigEnabled($container, $config)) {
             // this is needed for the WebProfiler to work even if the profiler is disabled
-            $container->setParameter('data_collector.templates', array());
+            $container->setParameter('data_collector.templates', []);
 
             return;
         }
@@ -563,22 +563,22 @@ private function registerProfilerConfiguration(array $config, ContainerBuilder $
                 $definition->setPublic(false);
 
                 if (isset($config['matcher']['ip'])) {
-                    $definition->addMethodCall('matchIp', array($config['matcher']['ip']));
+                    $definition->addMethodCall('matchIp', [$config['matcher']['ip']]);
                 }
 
                 if (isset($config['matcher']['ips'])) {
-                    $definition->addMethodCall('matchIps', array($config['matcher']['ips']));
+                    $definition->addMethodCall('matchIps', [$config['matcher']['ips']]);
                 }
 
                 if (isset($config['matcher']['path'])) {
-                    $definition->addMethodCall('matchPath', array($config['matcher']['path']));
+                    $definition->addMethodCall('matchPath', [$config['matcher']['path']]);
                 }
             }
         }
 
         $container->getDefinition('profiler')
             ->addArgument($config['collect'])
-            ->addTag('kernel.reset', array('method' => 'reset'));
+            ->addTag('kernel.reset', ['method' => 'reset']);
     }
 
     private function registerWorkflowConfiguration(array $config, ContainerBuilder $container, XmlFileLoader $loader)
@@ -610,13 +610,13 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             $workflowId = sprintf('%s.%s', $type, $name);
 
             // Create transitions
-            $transitions = array();
-            $guardsConfiguration = array();
+            $transitions = [];
+            $guardsConfiguration = [];
             // Global transition counter per workflow
             $transitionCounter = 0;
             foreach ($workflow['transitions'] as $transition) {
                 if ('workflow' === $type) {
-                    $transitionDefinition = new Definition(Workflow\Transition::class, array($transition['name'], $transition['from'], $transition['to']));
+                    $transitionDefinition = new Definition(Workflow\Transition::class, [$transition['name'], $transition['from'], $transition['to']]);
                     $transitionDefinition->setPublic(false);
                     $transitionId = sprintf('%s.transition.%s', $workflowId, $transitionCounter++);
                     $container->setDefinition($transitionId, $transitionDefinition);
@@ -632,7 +632,7 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                 } elseif ('state_machine' === $type) {
                     foreach ($transition['from'] as $from) {
                         foreach ($transition['to'] as $to) {
-                            $transitionDefinition = new Definition(Workflow\Transition::class, array($transition['name'], $from, $to));
+                            $transitionDefinition = new Definition(Workflow\Transition::class, [$transition['name'], $from, $to]);
                             $transitionDefinition->setPublic(false);
                             $transitionId = sprintf('%s.transition.%s', $workflowId, $transitionCounter++);
                             $container->setDefinition($transitionId, $transitionDefinition);
@@ -655,11 +655,11 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             $definitionDefinition->setPublic(false);
             $definitionDefinition->addArgument($workflow['places']);
             $definitionDefinition->addArgument($transitions);
-            $definitionDefinition->addTag('workflow.definition', array(
+            $definitionDefinition->addTag('workflow.definition', [
                 'name' => $name,
                 'type' => $type,
                 'marking_store' => isset($workflow['marking_store']['type']) ? $workflow['marking_store']['type'] : null,
-            ));
+            ]);
             if (isset($workflow['initial_place'])
B83A
) {
                 $definitionDefinition->addArgument($workflow['initial_place']);
             }
@@ -689,22 +689,22 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             // Add workflow to Registry
             if ($workflow['supports']) {
                 foreach ($workflow['supports'] as $supportedClassName) {
-                    $strategyDefinition = new Definition(Workflow\SupportStrategy\ClassInstanceSupportStrategy::class, array($supportedClassName));
+                    $strategyDefinition = new Definition(Workflow\SupportStrategy\ClassInstanceSupportStrategy::class, [$supportedClassName]);
                     $strategyDefinition->setPublic(false);
-                    $registryDefinition->addMethodCall('add', array(new Reference($workflowId), $strategyDefinition));
+                    $registryDefinition->addMethodCall('add', [new Reference($workflowId), $strategyDefinition]);
                 }
             } elseif (isset($workflow['support_strategy'])) {
-                $registryDefinition->addMethodCall('add', array(new Reference($workflowId), new Reference($workflow['support_strategy'])));
+                $registryDefinition->addMethodCall('add', [new Reference($workflowId), new Reference($workflow['support_strategy'])]);
             }
 
             // Enable the AuditTrail
             if ($workflow['audit_trail']['enabled']) {
                 $listener = new Definition(Workflow\EventListener\AuditTrailListener::class);
                 $listener->setPrivate(true);
-                $listener->addTag('monolog.logger', array('channel' => 'workflow'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.leave', $name), 'method' => 'onLeave'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.transition', $name), 'method' => 'onTransition'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.enter', $name), 'method' => 'onEnter'));
+                $listener->addTag('monolog.logger', ['channel' => 'workflow']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.leave', $name), 'method' => 'onLeave']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.transition', $name), 'method' => 'onTransition']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.enter', $name), 'method' => 'onEnter']);
                 $listener->addArgument(new Reference('logger'));
                 $container->setDefinition(sprintf('%s.listener.audit_trail', $workflowId), $listener);
             }
@@ -722,7 +722,7 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                 $guard = new Definition(Workflow\EventListener\GuardListener::class);
                 $guard->setPrivate(true);
 
-                $guard->setArguments(array(
+                $guard->setArguments([
                     $guardsConfiguration,
                     new Reference('workflow.security.expression_language'),
                     new Reference('security.token_storage'),
@@ -730,9 +730,9 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                     new Reference('security.authentication.trust_resolver'),
                     new Reference('security.role_hierarchy'),
                     new Reference('validator', ContainerInterface::NULL_ON_INVALID_REFERENCE),
-                ));
+                ]);
                 foreach ($guardsConfiguration as $eventName => $config) {
-                    $guard->addTag('kernel.event_listener', array('event' => $eventName, 'method' => 'onTransition'));
+                    $guard->addTag('kernel.event_listener', ['event' => $eventName, 'method' => 'onTransition']);
                 }
 
                 $container->setDefinition(sprintf('%s.listener.guard', $workflowId), $guard);
@@ -751,7 +751,7 @@ private function registerDebugConfiguration(array $config, ContainerBuilder $con
             $container->register('debug.stopwatch', Stopwatch::class)
                 ->addArgument(true)
                 ->setPrivate(true)
-                ->addTag('kernel.reset', array('method' => 'reset'));
+                ->addTag('kernel.reset', ['method' => 'reset']);
             $container->setAlias(Stopwatch::class, new Alias('debug.stopwatch', false));
         }
 
@@ -815,36 +815,36 @@ private function registerRouterConfiguration(array $config, ContainerBuilder $co
         $container->setParameter('request_listener.https_port', $config['https_port']);
 
         if (\PHP_VERSION_ID < 70000) {
-            $this->addClassesToCompile(array(
+            $this->addClassesToCompile([
                 'Symfony\\Component\\Routing\\Generator\\UrlGenerator',
                 'Symfony\\Component\\Routing\\RequestContext',
                 'Symfony\\Component\\Routing\\Router',
                 'Symfony\\Bundle\\FrameworkBundle\\Routing\\RedirectableUrlMatcher',
                 $container->findDefinition('router.default')->getClass(),
-            ));
+            ]);
         }
 
         if ($this->annotationsConfigEnabled) {
             $container->register('routing.loader.annotation', AnnotatedRouteControllerLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
+                ->addTag('routing.loader', ['priority' => -10])
                 ->addArgument(new Reference('annotation_reader'));
 
             $container->register('routing.loader.annotation.directory', AnnotationDirectoryLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
-                ->setArguments(array(
+                ->addTag('routing.loader', ['priority' => -10])
+                ->setArguments([
                     new Reference('file_locator'),
                     new Reference('routing.loader.annotation'),
-                ));
+                ]);
 
             $container->register('routing.loader.annotation.file', AnnotationFileLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
-                ->setArguments(array(
+                ->addTag('routing.loader', ['priority' => -10])
+                ->setArguments([
                     new Reference('file_locator'),
                     new Reference('routing.loader.annotation'),
-                ));
+                ]);
         }
     }
 
@@ -860,8 +860,8 @@ private function registerSessionConfiguration(array $config, ContainerBuilder $c
 
         // session storage
         $container->setAlias('session.storage', $config['storage_id'])->setPrivate(true);
-        $options = array('cache_limiter' => '0');
-        foreach (array('name', 'cookie_lifetime', 'cookie_path', 'cookie_domain', 'cookie_secure', 'cookie_httponly', 'use_cookies', 'gc_maxlifetime', 'gc_probability', 'gc_divisor', 'use_strict_mode') as $key) {
+        $options = ['cache_limiter' => '0'];
+        foreach (['name', 'cookie_lifetime', 'cookie_path', 'cookie_domain', 'cookie_secure', 'cookie_httponly', 'use_cookies', 'gc_maxlifetime', 'gc_probability', 'gc_divisor', 'use_strict_mode'] as $key) {
             if (isset($config[$key])) {
                 $options[$key] = $config[$key];
             }
@@ -881,7 +881,7 @@ private function registerSessionConfiguration(array $config, ContainerBuilder $c
         $container->setParameter('session.save_path', $config['save_path']);
 
         if (\PHP_VERSION_ID < 70000) {
-            $this->addClassesToCompile(array(
+            $this->addClassesToCompile([
                 'Symfony\\Component\\HttpKernel\\EventListener\\SessionListener',
                 'Symfony\\Component\\HttpFoundation\\Session\\Storage\\NativeSessionStorage',
                 'Symfony\\Component\\HttpFoundation\\Session\\Storage\\PhpBridgeSessionStorage',
@@ -889,12 +889,12 @@ private function registerSessionConfiguration(array $config, ContainerBuilder $c
                 'Symfony\\Component\\HttpFoundation\\Session\\Storage\\Proxy\\AbstractProxy',
                 'Symfony\\Component\\HttpFoundation\\Session\\Storage\\Proxy\\SessionHandlerProxy',
                 $container->getDefinition('session')->getClass(),
-            ));
+            ]);
 
             if ($container->hasDefinition($config['storage_id'])) {
-                $this->addClassesToCompile(array(
+                $this->addClassesToCompile([
                     $container->findDefinition('session.storage')->getClass(),
-                ));
+                ]);
             }
         }
 
@@ -925,11 +925,11 @@ private function registerTemplatingConfiguration(array $config, ContainerBuilder
             $logger = new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE);
 
             $container->getDefinition('templating.loader.cache')
-                ->addTag('monolog.logger', array('channel' => 'templating'))
-                ->addMethodCall('setLogger', array($logger));
+                ->addTag('monolog.logger', ['channel' => 'templating'])
+                ->addMethodCall('setLogger', [$logger]);
             $container->getDefinition('templating.loader.chain')
-                ->addTag('monolog.logger', array('channel' => 'templating'))
-                ->addMethodCall('setLogger', array($logger));
+                ->addTag('monolog.logger', ['channel' => 'templating'])
+                ->addMethodCall('setLogger', [$logger]);
         }
 
         if (!empty($config['loaders'])) {
@@ -955,12 +955,12 @@ private function registerTemplatingConfiguration(array $config, ContainerBuilder
         }
 
         if (\PHP_VERSION_ID < 70000) {
-            $this->addClassesToCompile(array(
+            $this->addClassesToCompile([
                 'Symfony\\Bundle\\FrameworkBundle\\Templating\\GlobalVariables',
                 'Symfony\\Bundle\\FrameworkBundle\\Templating\\TemplateReference',
                 'Symfony\\Bundle\\FrameworkBundle\\Templating\\TemplateNameParser',
                 $container->findDefinition('templating.locator')->getClass(),
-            ));
+            ]);
         }
 
         $container->setParameter('templating.engines', $config['engines']);
@@ -972,13 +972,13 @@ private function registerTemplatingConfiguration(array $config, ContainerBuilder
         } else {
             $templateEngineDefinition = $container->getDefinition('templating.engine.delegating');
             foreach ($engines as $engine) {
-                $templateEngineDefinition->addMethodCall('addEngine', array($engine));
+                $templateEngineDefinition->addMethodCall('addEngine', [$engine]);
             }
             $container->setAlias('templating', 'templating.engine.delegating')->setPublic(true);
         }
 
         $container->getDefinition('fragment.renderer.hinclude')
-            ->addTag('kernel.fragment_renderer', array('alias' => 'hinclude'))
+            ->addTag('kernel.fragment_renderer', ['alias' => 'hinclude'])
             ->replaceArgument(0, new Reference('templating'))
         ;
 
@@ -1008,11 +1008,11 @@ private function registerTemplatingConfiguration(array $config, ContainerBuilder
             }
 
             if (\PHP_VERSION_ID < 70000) {
-                $this->addClassesToCompile(array(
+                $this->addClassesToCompile([
                     'Symfony\\Component\\Templating\\Storage\\FileStorage',
                     'Symfony\\Bundle\\FrameworkBundle\\Templating\\PhpEngine',
                     'Symfony\\Bundle\\FrameworkBundle\\Templating\\Loader\\FilesystemLoader',
-                ));
+                ]);
             }
 
             if ($container->has('assets.packages')) {
@@ -1048,7 +1048,7 @@ private function registerAssetsConfiguration(array $config, ContainerBuilder $co
         $defaultPackage = $this->createPackageDefinition($config['base_path'], $config['base_urls'], $defaultVersion);
         $container->setDefinition('assets._default_package', $defaultPackage);
 
-        $namedPackages = array();
+        $namedPackages = [];
         foreach ($config['packages'] as $name => $package) {
             if (null !== $package['version_strategy']) {
                 $version = new Reference($package['version_strategy']);
@@ -1160,13 +1160,13 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
         $container->setAlias('translator', 'translator.default')->setPublic(true);
         $container->setAlias('translator.formatter', new Alias($config['formatter'], false));
         $translator = $container->findDefinition('translator.default');
-        $translator->addMethodCall('setFallbackLocales', array($config['fallbacks']));
+        $translator->addMethodCall('setFallbackLocales', [$config['fallbacks']]);
 
         $container->setParameter('translator.logging', $config['logging']);
         $container->setParameter('translator.default_path', $config['default_path']);
 
         // Discover translation directories
-        $dirs = array();
+        $dirs = [];
         if (class_exists('Symfony\Component\Validator\Validation')) {
             $r = new \ReflectionClass('Symfony\Component\Validator\Validation');
 
@@ -1210,7 +1210,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
 
         // Register translation resources
         if ($dirs) {
-            $files = array();
+            $files = [];
             $finder = Finder::create()
                 ->followLinks()
                 ->files()
@@ -1224,7 +1224,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
             foreach ($finder as $file) {
                 list(, $locale) = explode('.', $file->getBasename(), 3);
                 if (!isset($files[$locale])) {
-                    $files[$locale] = array();
+                    $files[$locale] = [];
                 }
 
                 $files[$locale][] = (string) $file;
@@ -1232,7 +1232,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
 
             $options = array_merge(
                 $translator->getArgument(4),
-                array('resource_files' => $files)
+                ['resource_files' => $files]
             );
 
             $translator->replaceArgument(4, $options);
@@ -1259,15 +1259,15 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
 
         $container->setParameter('validator.translation_domain', $config['translation_domain']);
 
-        $files = array('xml' => array(), 'yml' => array());
+        $files = ['xml' => [], 'yml' => []];
         $this->registerValidatorMapping($container, $config, $files);
 
         if (!empty($files['xml'])) {
-            $validatorBuilder->addMethodCall('addXmlMappings', array($files['xml']));
+            $validatorBuilder->addMethodCall('addXmlMappings', [$files['xml']]);
         }
 
         if (!empty($files['yml'])) {
-            $validatorBuilder->addMethodCall('addYamlMappings', array($files['yml']));
+            $validatorBuilder->addMethodCall('addYamlMappings', [$files['yml']]);
         }
 
         $definition = $container->findDefinition('validator.email');
@@ -1278,12 +1278,12 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
                 throw new \LogicException('"enable_annotations" on the validator cannot be set as Annotations support is disabled.');
             }
 
-            $validatorBuilder->addMethodCall('enableAnnotationMapping', array(new Reference('annotation_reader')));
+            $validatorBuilder->addMethodCall('enableAnnotationMapping', [new Reference('annotation_reader')]);
         }
 
         if (array_key_exists('static_method', $config) && $config['static_method']) {
             foreach ($config['static_method'] as $methodName) {
-                $validatorBuilder->addMethodCall('addMethodMapping', array($methodName));
+                $validatorBuilder->addMethodCall('addMethodMapping', [$methodName]);
             }
         }
 
@@ -1293,9 +1293,9 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
                 'validator_'.$this->getKernelRootHash($container)
             );
 
-            $validatorBuilder->addMethodCall('setMetadataCache', array(new Reference($config['cache'])));
+            $validatorBuilder->addMethodCall('setMetadataCache', [new Reference($config['cache'])]);
         } elseif (!$container->getParameter('kernel.debug')) {
-            $validatorBuilder->addMethodCall('setMetadataCache', array(new Reference('validator.mapping.cache.symfony')));
+            $validatorBuilder->addMethodCall('setMetadataCache', [new Reference('validator.mapping.cache.symfony')]);
         }
     }
 
@@ -1377,7 +1377,7 @@ private function registerAnnotationsConfiguration(array $config, ContainerBuilde
 
         if (!method_exists(AnnotationRegistry::class, 'registerUniqueLoader')) {
             $container->getDefinition('annotations.dummy_registry')
-                ->setMethodCalls(array(array('registerLoader', array('class_exists'))));
+                ->setMethodCalls([['registerLoader', ['class_exists']]]);
         }
 
         if ('none' !== $config['cache']) {
@@ -1395,10 +1395,10 @@ private function registerAnnotationsConfiguration(array $config, ContainerBuilde
                 $definition->addTag('kernel.cache_warmer');
 
                 if (\PHP_VERSION_ID < 70000) {
-                    $this->addClassesToCompile(array(
+                    $this->addClassesToCompile([
                         'Symfony\Component\Cache\Adapter\PhpArrayAdapter',
                         'Symfony\Component\Cache\DoctrineProvider',
-                    ));
+                    ]);
                 }
             } elseif ('file' === $config['cache']) {
                 $cacheDir = $container->getParameterBag()->resolveValue($config['file_cache_dir']);
@@ -1486,7 +1486,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
             $container->removeDefinition('serializer.encoder.yaml');
         }
 
-        $serializerLoaders = array();
+        $serializerLoaders = [];
         if (isset($config['enable_annotations']) && $config['enable_annotations']) {
             if (!$this->annotationsConfigEnabled) {
                 throw new \LogicException('"enable_annotations" on the serializer cannot be set as Annotations support is disabled.');
@@ -1494,7 +1494,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
 
             $annotationLoader = new Definition(
                 'Symfony\Component\Serializer\Mapping\Loader\AnnotationLoader',
-                 array(new Reference('annotation_reader'))
+                 [new Reference('annotation_reader')]
             );
             $annotationLoader->setPublic(false);
 
@@ -1502,7 +1502,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         }
 
         $fileRecorder = function ($extension, $path) use (&$serializerLoaders) {
-            $definition = new Definition(\in_array($extension, array('yaml', 'yml')) ? 'Symfony\Component\Serializer\Mapping\Loader\YamlFileLoader' : 'Symfony\Component\Serializer\Mapping\Loader\XmlFileLoader', array($path));
+            $definition = new Definition(\in_array($extension, ['yaml', 'yml']) ? 'Symfony\Component\Serializer\Mapping\Loader\YamlFileLoader' : 'Symfony\Component\Serializer\Mapping\Loader\XmlFileLoader', [$path]);
             $definition->setPublic(false);
             $serializerLoaders[] = $definition;
         };
@@ -1548,10 +1548,10 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         } elseif (!$container->getParameter('kernel.debug')) {
             $cacheMetadataFactory = new Definition(
                 CacheClassMetadataFactory::class,
-                array(
+                [
                     new Reference('serializer.mapping.cache_class_metadata_factory.inner'),
                     new Reference('serializer.mapping.cache.symfony'),
-                )
+                ]
             );
             $cacheMetadataFactory->setPublic(false);
             $cacheMetadataFactory->setDecoratedService('serializer.mapping.class_metadata_factory');
@@ -1564,7 +1564,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         }
 
         if (isset($config['circular_reference_handler']) && $config['circular_reference_handler']) {
-            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setCircularReferenceHandler', array(new Reference($config['circular_reference_handler'])));
+            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setCircularReferenceHandler', [new Reference($config['circular_reference_handler'])]);
         }
     }
 
@@ -1581,8 +1581,8 @@ private function registerPropertyInfoConfiguration(ContainerBuilder $container,
         if (interface_exists('phpDocumentor\Reflection\DocBlockFactoryInterface')) {
             $definition = $container->register('property_info.php_doc_extractor', 'Symfony\Component\PropertyInfo\Extractor\PhpDocExtractor');
             $definition->setPrivate(true);
-            $definition->addTag('property_info.description_extractor', array('priority' => -1000));
-            $definition->addTag('property_info.type_extractor', array('priority' => -1001));
+            $definition->addTag('property_info.description_extractor', ['priority' => -1000]);
+            $definition->addTag('property_info.type_extractor', ['priority' => -1001]);
         }
     }
 
@@ -1596,7 +1596,7 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
             }
 
             // Generate stores
-            $storeDefinitions = array();
+            $storeDefinitions = [];
             foreach ($resourceStores as $storeDsn) {
                 $storeDsn = $container->resolveEnvPlaceholders($storeDsn, null, $usedEnvs);
                 switch (true) {
@@ -1610,15 +1610,15 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
                         if (!$container->hasDefinition($connectionDefinitionId = $container->hash($storeDsn))) {
                             $connectionDefinition = new Definition(\stdClass::class);
                             $connectionDefinition->setPublic(false);
-                            $connectionDefinition->setFactory(array(AbstractAdapter::class, 'createConnection'));
-                            $connectionDefinition->setArguments(array($storeDsn, array('lazy' => true)));
+                            $connectionDefinition->setFactory([AbstractAdapter::class, 'createConnection']);
+                            $connectionDefinition->setArguments([$storeDsn, ['lazy' => true]]);
                             $container->setDefinition($connectionDefinitionId, $connectionDefinition);
                         }
 
                         $storeDefinition = new Definition(StoreInterface::class);
                         $storeDefinition->setPublic(false);
-                        $storeDefinition->setFactory(array(StoreFactory::class, 'createStore'));
-                        $storeDefinition->setArguments(array(new Reference($connectionDefinitionId)));
+                        $storeDefinition->setFactory([StoreFactory::class, 'createStore']);
+                        $storeDefinition->setArguments([new Reference($connectionDefinitionId)]);
 
                         $container->setDefinition($storeDefinitionId = 'lock.'.$resourceName.'.store.'.$container->hash($storeDsn), $storeDefinition);
 
@@ -1648,8 +1648,8 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
             // Generate services for lock instances
             $lockDefinition = new Definition(Lock::class);
             $lockDefinition->setPublic(false);
-            $lockDefinition->setFactory(array(new Reference('lock.'.$resourceName.'.factory'), 'createLock'));
-            $lockDefinition->setArguments(array($resourceName));
+            $lockDefinition->setFactory([new Reference('lock.'.$resourceName.'.factory'), 'createLock']);
+            $lockDefinition->setArguments([$resourceName]);
             $container->setDefinition('lock.'.$resourceName, $lockDefinition);
 
             // provide alias for default resource
@@ -1678,16 +1678,16 @@ private function registerCacheConfiguration(array $config, ContainerBuilder $con
             // Inline any env vars referenced in the parameter
             $container->setParameter('cache.prefix.seed', $container->resolveEnvPlaceholders($container->getParameter('cache.prefix.seed'), true));
         }
-        foreach (array('doctrine', 'psr6', 'redis', 'memcached') as $name) {
+        foreach (['doctrine', 'psr6', 'redis', 'memcached'] as $name) {
             if (isset($config[$name = 'default_'.$name.'_provider'])) {
                 $container->setAlias('cache.'.$name, new Alias(Compiler\CachePoolPass::getServiceProvider($container, $config[$name]), false));
             }
         }
-        foreach (array('app', 'system') as $name) {
-            $config['pools']['cache.'.$name] = array(
+        foreach (['app', 'system'] as $name) {
+            $config['pools']['cache.'.$name] = [
                 'adapter' => $config[$name],
                 'public' => true,
-            );
+            ];
         }
         foreach ($config['pools'] as $name => $pool) {
             $definition = new ChildDefinition($pool['adapter']);
@@ -1703,22 +1703,22 @@ private function registerCacheConfiguration(array $config, ContainerBuilder $con
             $propertyAccessDefinition->setPublic(false);
 
             if (!$container->getParameter('kernel.debug')) {
-                $propertyAccessDefinition->setFactory(array(PropertyAccessor::class, 'createCache'));
-                $propertyAccessDefinition->setArguments(array(null, null, $version, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
-                $propertyAccessDefinition->addTag('cache.pool', array('clearer' => 'cache.system_clearer'));
-                $propertyAccessDefinition->addTag('monolog.logger', array('channel' => 'cache'));
+                $propertyAccessDefinition->setFactory([PropertyAccessor::class, 'createCache']);
+                $propertyAccessDefinition->setArguments([null, null, $version, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)]);
+                $propertyAccessDefinition->addTag('cache.pool', ['clearer' => 'cache.system_clearer']);
+                $propertyAccessDefinition->addTag('monolog.logger', ['channel' => 'cache']);
             } else {
                 $propertyAccessDefinition->setClass(ArrayAdapter::class);
-                $propertyAccessDefinition->setArguments(array(0, false));
+                $propertyAccessDefinition->setArguments([0, false]);
             }
         }
 
         if (\PHP_VERSION_ID < 70000) {
-            $this->addClassesToCompile(array(
+            $this->addClassesToCompile([
                 'Symfony\Component\Cache\Adapter\ApcuAdapter',
                 'Symfony\Component\Cache\Adapter\FilesystemAdapter',
                 'Symfony\Component\Cache\CacheItem',
-            ));
+            ]);
         }
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/EventListener/ResolveControllerNameSubscriber.php b/src/Symfony/Bundle/FrameworkBundle/EventListener/ResolveControllerNameSubscriber.php
index 5fb6c3b56fda..ffb32b2f2bc8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/EventListener/ResolveControllerNameSubscriber.php
+++ b/src/Symfony/Bundle/FrameworkBundle/EventListener/ResolveControllerNameSubscriber.php
@@ -41,8 +41,8 @@ public function onKernelRequest(GetResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array('onKernelRequest', 24),
-        );
+        return [
+            KernelEvents::REQUEST => ['onKernelRequest', 24],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php b/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php
index 3288c4b1a852..daf7a37bf854 100644
--- a/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php
+++ b/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php
@@ -84,13 +84,13 @@ public function build(ContainerBuilder $container)
     {
         parent::build($container);
 
-        $hotPathEvents = array(
+        $hotPathEvents = [
             KernelEvents::REQUEST,
             KernelEvents::CONTROLLER,
             KernelEvents::CONTROLLER_ARGUMENTS,
             KernelEvents::RESPONSE,
             KernelEvents::FINISH_REQUEST,
-        );
+        ];
 
         $container->addCompilerPass(new LoggerPass(), PassConfig::TYPE_BEFORE_OPTIMIZATION, -32);
         $container->addCompilerPass(new RegisterControllerArgumentLocatorsPass());
diff --git a/src/Symfony/Bundle/FrameworkBundle/HttpCache/HttpCache.php b/src/Symfony/Bundle/FrameworkBundle/HttpCache/HttpCache.php
index d9bd45635021..6d79c6a90e29 100644
--- a/src/Symfony/Bundle/FrameworkBundle/HttpCache/HttpCache.php
+++ b/src/Symfony/Bundle/FrameworkBundle/HttpCache/HttpCache.php
@@ -37,7 +37,7 @@ public function __construct(KernelInterface $kernel, $cacheDir = null)
         $this->kernel = $kernel;
         $this->cacheDir = $cacheDir;
 
-        parent::__construct($kernel, $this->createStore(), $this->createSurrogate(), array_merge(array('debug' => $kernel->isDebug()), $this->getOptions()));
+        parent::__construct($kernel, $this->createStore(), $this->createSurrogate(), array_merge(['debug' => $kernel->isDebug()], $this->getOptions()));
     }
 
     /**
@@ -64,7 +64,7 @@ protected function forward(Request $request, $raw = false, Response $entry = nul
      */
     protected function getOptions()
     {
-        return array();
+        return [];
     }
 
     protected function createSurrogate()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
index 81345890161a..3d4e7b9afe1a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
@@ -62,12 +62,12 @@ abstract protected function configureContainer(ContainerBuilder $c, LoaderInterf
     public function registerContainerConfiguration(LoaderInterface $loader)
     {
         $loader->load(function (ContainerBuilder $container) use ($loader) {
-            $container->loadFromExtension('framework', array(
-                'router' => array(
+            $container->loadFromExtension('framework', [
+                'router' => [
                     'resource' => 'kernel:loadRoutes',
                     'type' => 'service',
-                ),
-            ));
+                ],
+            ]);
 
             if ($this instanceof EventSubscriberInterface) {
                 $container->register('kernel', static::class)
diff --git a/src/Symfony/Bundle/FrameworkBundle/Routing/AnnotatedRouteControllerLoader.php b/src/Symfony/Bundle/FrameworkBundle/Routing/AnnotatedRouteControllerLoader.php
index 474c725566d5..51419c891498 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Routing/AnnotatedRouteControllerLoader.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Routing/AnnotatedRouteControllerLoader.php
@@ -43,14 +43,14 @@ protected function configureRoute(Route $route, \ReflectionClass $class, \Reflec
      */
     protected function getDefaultRouteName(\ReflectionClass $class, \ReflectionMethod $method)
     {
-        return preg_replace(array(
+        return preg_replace([
             '/(bundle|controller)_/',
             '/action(_\d+)?$/',
             '/__/',
-        ), array(
+        ], [
             '_',
             '\\1',
             '_',
-        ), parent::getDefaultRouteName($class, $method));
+        ], parent::getDefaultRouteName($class, $method));
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Routing/RedirectableUrlMatcher.php b/src/Symfony/Bundle/FrameworkBundle/Routing/RedirectableUrlMatcher.php
index 5571c74e81d1..fd1594c8833f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Routing/RedirectableUrlMatcher.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Routing/RedirectableUrlMatcher.php
@@ -29,7 +29,7 @@ class RedirectableUrlMatcher extends BaseMatcher
      */
     public function redirect($path, $route, $scheme = null)
     {
-        return array(
+        return [
             '_controller' => 'Symfony\\Bundle\\FrameworkBundle\\Controller\\RedirectController::urlRedirectAction',
             'path' => $path,
             'permanent' => true,
@@ -37,6 +37,6 @@ public function redirect($path, $route, $scheme = null)
             'httpPort' => $this->context->getHttpPort(),
             'httpsPort' => $this->context->getHttpsPort(),
             '_route' => $route,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php b/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
index 3904996aa459..a846536a40a3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
@@ -30,7 +30,7 @@
 class Router extends BaseRouter implements WarmableInterface, ServiceSubscriberInterface
 {
     private $container;
-    private $collectedParameters = array();
+    private $collectedParameters = [];
 
     /**
      * @param ContainerInterface $container A ContainerInterface instance
@@ -38,7 +38,7 @@ class Router extends BaseRouter implements WarmableInterface, ServiceSubscriberI
      * @param array              $options   An array of options
      * @param RequestContext     $context   The context
      */
-    public function __construct(ContainerInterface $container, $resource, array $options = array(), RequestContext $context = null)
+    public function __construct(ContainerInterface $container, $resource, array $options = [], RequestContext $context = null)
     {
         $this->container = $container;
 
@@ -99,13 +99,13 @@ private function resolveParameters(RouteCollection $collection)
             $route->setPath($this->resolve($route->getPath()));
             $route->setHost($this->resolve($route->getHost()));
 
-            $schemes = array();
+            $schemes = [];
             foreach ($route->getSchemes() as $scheme) {
                 $schemes = array_merge($schemes, explode('|', $this->resolve($scheme)));
             }
             $route->setSchemes($schemes);
 
-            $methods = array();
+            $methods = [];
             foreach ($route->getMethods() as $method) {
                 $methods = array_merge($methods, explode('|', $this->resolve($method)));
             }
@@ -170,8 +170,8 @@ private function resolve($value)
      */
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             'routing.loader' => LoaderInterface::class,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/DelegatingEngine.php b/src/Symfony/Bundle/FrameworkBundle/Templating/DelegatingEngine.php
index 07bf39f5b450..f40760fc91eb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/DelegatingEngine.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/DelegatingEngine.php
@@ -43,7 +43,7 @@ public function getEngine($name)
     /**
      * {@inheritdoc}
      */
-    public function renderResponse($view, array $parameters = array(), Response $response = null)
+    public function renderResponse($view, array $parameters = [], Response $response = null)
     {
         $engine = $this->getEngine($view);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/EngineInterface.php b/src/Symfony/Bundle/FrameworkBundle/Templating/EngineInterface.php
index cc0d573ee26d..0b3a8b32006b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/EngineInterface.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/EngineInterface.php
@@ -32,5 +32,5 @@ interface EngineInterface extends BaseEngineInterface
      *
      * @throws \RuntimeException if the template cannot be rendered
      */
-    public function renderResponse($view, array $parameters = array(), Response $response = null);
+    public function renderResponse($view, array $parameters = [], Response $response = null);
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/ActionsHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/ActionsHelper.php
index 76a6046d9b0b..70e5a314bba6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/ActionsHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/ActionsHelper.php
@@ -39,7 +39,7 @@ public function __construct(FragmentHandler $handler)
      *
      * @see FragmentHandler::render()
      */
-    public function render($uri, array $options = array())
+    public function render($uri, array $options = [])
     {
         $strategy = isset($options['strategy']) ? $options['strategy'] : 'inline';
         unset($options['strategy']);
@@ -47,7 +47,7 @@ public function render($uri, array $options = array())
         return $this->handler->render($uri, $strategy, $options);
     }
 
-    public function controller($controller, $attributes = array(), $query = array())
+    public function controller($controller, $attributes = [], $query = [])
     {
         return new ControllerReference($controller, $attributes, $query);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
index c4087a2f39d5..c8914c3a5858 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
@@ -78,7 +78,7 @@ public function abbrMethod($method)
      */
     public function formatArgs(array $args)
     {
-        $result = array();
+        $result = [];
         foreach ($args as $key => $item) {
             if ('object' === $item[0]) {
                 $parts = explode('\\', $item[1]);
@@ -131,7 +131,7 @@ public function fileExcerpt($file, $line)
             $code = preg_replace('#^<code.*?>\s*<span.*?>(.*)</span>\s*</code>#s', '\\1', $code);
             $content = explode('<br />', $code);
 
-            $lines = array();
+            $lines = [];
             for ($i = max($line - 3, 1), $max = min($line + 3, \count($content)); $i <= $max; ++$i) {
                 $lines[] = '<li'.($i == $line ? ' class="selected"' : '').'><code>'.self::fixCodeMarkup($content[$i - 1]).'</code></li>';
             }
@@ -157,7 +157,7 @@ public function formatFile($file, $line, $text = null)
             $file = trim($file);
             $fileStr = $file;
             if (0 === strpos($fileStr, $this->rootDir)) {
-                $fileStr = str_replace(array('\\', $this->rootDir), array('/', ''), $fileStr);
+                $fileStr = str_replace(['\\', $this->rootDir], ['/', ''], $fileStr);
                 $fileStr = htmlspecialchars($fileStr, $flags, $this->charset);
                 $fileStr = sprintf('<abbr title="%s">kernel.root_dir</abbr>/%s', htmlspecialchars($this->rootDir, $flags, $this->charset), $fileStr);
             }
@@ -183,7 +183,7 @@ public function formatFile($file, $line, $text = null)
     public function getFileLink($file, $line)
     {
         if ($fmt = $this->fileLinkFormat) {
-            return \is_string($fmt) ? strtr($fmt, array('%f' => $file, '%l' => $line)) : $fmt->format($file, $line);
+            return \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line);
         }
 
         return false;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php
index a07b0500e9c7..9e602b2aeb87 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php
@@ -76,7 +76,7 @@ public function setTheme(FormView $view, $themes, $useDefaultThemes = true)
      *
      * @return string The HTML markup
      */
-    public function form(FormView $view, array $variables = array())
+    public function form(FormView $view, array $variables = [])
     {
         return $this->renderer->renderBlock($view, 'form', $variables);
     }
@@ -93,7 +93,7 @@ public function form(FormView $view, array $variables = array())
      *
      * @return string The HTML markup
      */
-    public function start(FormView $view, array $variables = array())
+    public function start(FormView $view, array $variables = [])
     {
         return $this->renderer->renderBlock($view, 'form_start', $variables);
     }
@@ -110,7 +110,7 @@ public function start(FormView $view, array $variables = array())
      *
      * @return string The HTML markup
      */
-    public function end(FormView $view, array $variables = array())
+    public function end(FormView $view, array $variables = [])
     {
         return $this->renderer->renderBlock($view, 'form_end', $variables);
     }
@@ -133,7 +133,7 @@ public function end(FormView $view, array $variables = array())
      *
      * @return string The HTML markup
      */
-    public function widget(FormView $view, array $variables = array())
+    public function widget(FormView $view, array $variables = [])
     {
         return $this->renderer->searchAndRenderBlock($view, 'widget', $variables);
     }
@@ -146,7 +146,7 @@ public function widget(FormView $view, array $variables = array())
      *
      * @return string The HTML markup
      */
-    public function row(FormView $view, array $variables = array())
+    public function row(FormView $view, array $variables = [])
     {
         return $this->renderer->searchAndRenderBlock($view, 'row', $variables);
     }
@@ -160,10 +160,10 @@ public function row(FormView $view, array $variables = array())
      *
      * @return string The HTML markup
      */
-    public function label(FormView $view, $label = null, array $variables = array())
+    public function label(FormView $view, $label = null, array $variables = [])
     {
         if (null !== $label) {
-            $variables += array('label' => $label);
+            $variables += ['label' => $label];
         }
 
         return $this->renderer->searchAndRenderBlock($view, 'label', $variables);
@@ -187,7 +187,7 @@ public function errors(FormView $view)
      *
      * @return string The HTML markup
      */
-    public function rest(FormView $view, array $variables = array())
+    public function rest(FormView $view, array $variables = [])
     {
         return $this->renderer->searchAndRenderBlock($view, 'rest', $variables);
     }
@@ -201,7 +201,7 @@ public function rest(FormView $view, array $variables = array())
      *
      * @return string The HTML markup
      */
-    public function block(FormView $view, $blockName, array $variables = array())
+    public function block(FormView $view, $blockName, array $variables = [])
     {
         return $this->renderer->renderBlock($view, $blockName, $variables);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/RouterHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/RouterHelper.php
index 683efd5974be..f242479086e9 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/RouterHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/RouterHelper.php
@@ -39,7 +39,7 @@ public function __construct(UrlGeneratorInterface $router)
      *
      * @see UrlGeneratorInterface
      */
-    public function path($name, $parameters = array(), $relative = false)
+    public function path($name, $parameters = [], $relative = false)
     {
         return $this->generator->generate($name, $parameters, $relative ? UrlGeneratorInterface::RELATIVE_PATH : UrlGeneratorInterface::ABSOLUTE_PATH);
     }
@@ -55,7 +55,7 @@ public function path($name, $parameters = array(), $relative = false)
      *
      * @see UrlGeneratorInterface
      */
-    public function url($name, $parameters = array(), $schemeRelative = false)
+    public function url($name, $parameters = [], $schemeRelative = false)
     {
         return $this->generator->generate($name, $parameters, $schemeRelative ? UrlGeneratorInterface::NETWORK_PATH : UrlGeneratorInterface::ABSOLUTE_URL);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/SessionHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/SessionHelper.php
index 4de6e7eec07c..072c1d3d2146 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/SessionHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/SessionHelper.php
@@ -42,7 +42,7 @@ public function get($name, $default = null)
         return $this->getSession()->get($name, $default);
     }
 
-    public function getFlash($name, array $default = array())
+    public function getFlash($name, array $default = [])
     {
         return $this->getSession()->getFlashBag()->get($name, $default);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php
index 72269ec69d13..55232c46203a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php
@@ -33,11 +33,11 @@ public function getName()
         return 'stopwatch';
     }
 
-    public function __call($method, $arguments = array())
+    public function __call($method, $arguments = [])
     {
         if (null !== $this->stopwatch) {
             if (method_exists($this->stopwatch, $method)) {
-                return \call_user_func_array(array($this->stopwatch, $method), $arguments);
+                return \call_user_func_array([$this->stopwatch, $method], $arguments);
             }
 
             throw new \BadMethodCallException(sprintf('Method "%s" of Stopwatch does not exist', $method));
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
index 5c4a9ae0fa1c..4846cb11019c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
@@ -29,7 +29,7 @@ public function __construct(TranslatorInterface $translator)
     /**
      * @see TranslatorInterface::trans()
      */
-    public function trans($id, a
538E
rray $parameters = array(), $domain = 'messages', $locale = null)
+    public function trans($id, array $parameters = [], $domain = 'messages', $locale = null)
     {
         return $this->translator->trans($id, $parameters, $domain, $locale);
     }
@@ -37,7 +37,7 @@ public function trans($id, array $parameters = array(), $domain = 'messages', $l
     /**
      * @see TranslatorInterface::transChoice()
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = 'messages', $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = 'messages', $locale = null)
     {
         return $this->translator->transChoice($id, $number, $parameters, $domain, $locale);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Loader/TemplateLocator.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Loader/TemplateLocator.php
index dc57cc0964c5..b90b9a275a8a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Loader/TemplateLocator.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Loader/TemplateLocator.php
@@ -24,7 +24,7 @@ class TemplateLocator implements FileLocatorInterface
     protected $locator;
     protected $cache;
 
-    private $cacheHits = array();
+    private $cacheHits = [];
 
     /**
      * @param FileLocatorInterface $locator  A FileLocatorInterface instance
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/PhpEngine.php b/src/Symfony/Bundle/FrameworkBundle/Templating/PhpEngine.php
index bad7c1793162..ef9c43b8fd45 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/PhpEngine.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/PhpEngine.php
@@ -65,7 +65,7 @@ public function setHelpers(array $helpers)
     /**
      * {@inheritdoc}
      */
-    public function renderResponse($view, array $parameters = array(), Response $response = null)
+    public function renderResponse($view, array $parameters = [], Response $response = null)
     {
         if (null === $response) {
             $response = new Response();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateNameParser.php b/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateNameParser.php
index f1e54af31335..22dbe3c97289 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateNameParser.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateNameParser.php
@@ -25,7 +25,7 @@
 class TemplateNameParser extends BaseTemplateNameParser
 {
     protected $kernel;
-    protected $cache = array();
+    protected $cache = [];
 
     public function __construct(KernelInterface $kernel)
     {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateReference.php b/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateReference.php
index d9bc982d7452..8f1daf8599e3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateReference.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateReference.php
@@ -22,13 +22,13 @@ class TemplateReference extends BaseTemplateReference
 {
     public function __construct($bundle = null, $controller = null, $name = null, $format = null, $engine = null)
     {
-        $this->parameters = array(
+        $this->parameters = [
             'bundle' => $bundle,
             'controller' => $controller,
             'name' => $name,
             'format' => $format,
             'engine' => $engine,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/TimedPhpEngine.php b/src/Symfony/Bundle/FrameworkBundle/Templating/TimedPhpEngine.php
index 3263ea24d0be..783e675f975a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/TimedPhpEngine.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/TimedPhpEngine.php
@@ -35,7 +35,7 @@ public function __construct(TemplateNameParserInterface $parser, ContainerInterf
     /**
      * {@inheritdoc}
      */
-    public function render($name, array $parameters = array())
+    public function render($name, array $parameters = [])
     {
         $e = $this->stopwatch->start(sprintf('template.php (%s)', $name), 'template');
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php b/src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php
index 4febf5033d7a..0feb15380e1c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php
@@ -158,7 +158,7 @@ protected static function getKernelClass()
      *
      * @return KernelInterface A KernelInterface instance
      */
-    protected static function bootKernel(array $options = array())
+    protected static function bootKernel(array $options = [])
     {
         static::ensureKernelShutdown();
 
@@ -178,7 +178,7 @@ protected static function bootKernel(array $options = array())
      *
      * @return KernelInterface A KernelInterface instance
      */
-    protected static function createKernel(array $options = array())
+    protected static function createKernel(array $options = [])
     {
         if (null === static::$class) {
             static::$class = static::getKernelClass();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Test/WebTestCase.php b/src/Symfony/Bundle/FrameworkBundle/Test/WebTestCase.php
index 7302dc78aa37..e56e938dd994 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Test/WebTestCase.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Test/WebTestCase.php
@@ -29,7 +29,7 @@ abstract class WebTestCase extends KernelTestCase
      *
      * @return Client A Client instance
      */
-    protected static function createClient(array $options = array(), array $server = array())
+    protected static function createClient(array $options = [], array $server = [])
     {
         $kernel = static::bootKernel($options);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/AnnotationsCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/AnnotationsCacheWarmerTest.php
index b32274e7e7a8..9cc3bfa2d2f9 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/AnnotationsCacheWarmerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/AnnotationsCacheWarmerTest.php
@@ -34,7 +34,7 @@ protected function tearDown()
 
     public function testAnnotationsCacheWarmerWithDebugDisabled()
     {
-        file_put_contents($this->cacheDir.'/annotations.map', sprintf('<?php return %s;', var_export(array(__CLASS__), true)));
+        file_put_contents($this->cacheDir.'/annotations.map', sprintf('<?php return %s;', var_export([__CLASS__], true)));
         $cacheFile = tempnam($this->cacheDir, __FUNCTION__);
         $reader = new AnnotationReader();
         $fallbackPool = new ArrayAdapter();
@@ -60,7 +60,7 @@ public function testAnnotationsCacheWarmerWithDebugDisabled()
 
     public function testAnnotationsCacheWarmerWithDebugEnabled()
     {
-        file_put_contents($this->cacheDir.'/annotations.map', sprintf('<?php return %s;', var_export(array(__CLASS__), true)));
+        file_put_contents($this->cacheDir.'/annotations.map', sprintf('<?php return %s;', var_export([__CLASS__], true)));
         $cacheFile = tempnam($this->cacheDir, __FUNCTION__);
         $reader = new AnnotationReader();
         $fallbackPool = new ArrayAdapter();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/ClassCacheCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/ClassCacheCacheWarmerTest.php
index 5e442d662f12..20eb58ed76a4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/ClassCacheCacheWarmerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/ClassCacheCacheWarmerTest.php
@@ -27,9 +27,9 @@ public function testWithDeclaredClasses()
 
         $dir = sys_get_temp_dir();
         @unlink($dir.'/classes.php');
-        file_put_contents($dir.'/classes.map', sprintf('<?php return %s;', var_export(array(WarmedClass::class), true)));
+        file_put_contents($dir.'/classes.map', sprintf('<?php return %s;', var_export([WarmedClass::class], true)));
 
-        $warmer = new ClassCacheCacheWarmer(array(DeclaredClass::class));
+        $warmer = new ClassCacheCacheWarmer([DeclaredClass::class]);
 
         $warmer->warmUp($dir);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php
index fdd40d48d6fd..50a5abf0ae98 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php
@@ -28,10 +28,10 @@ public function testWarmUp()
             $this->markTestSkipped('The Serializer default cache warmer has been introduced in the Serializer Component version 3.2.');
         }
 
-        $loaders = array(
+        $loaders = [
             new XmlFileLoader(__DIR__.'/../Fixtures/Serialization/Resources/person.xml'),
             new YamlFileLoader(__DIR__.'/../Fixtures/Serialization/Resources/author.yml'),
-        );
+        ];
 
         $file = sys_get_temp_dir().'/cache-serializer.php';
         @unlink($file);
@@ -67,7 +67,7 @@ public function testWarmUpWithoutLoader()
 
         $fallbackPool = new ArrayAdapter();
 
-        $warmer = new SerializerCacheWarmer(array(), $file, $fallbackPool);
+        $warmer = new SerializerCacheWarmer([], $file, $fallbackPool);
         $warmer->warmUp(\dirname($file));
 
         $this->assertFileExists($file);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/TemplateFinderTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/TemplateFinderTest.php
index 5da592c356a6..94b5432c3ab9 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/TemplateFinderTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/TemplateFinderTest.php
@@ -34,7 +34,7 @@ public function testFindAllTemplates()
         $kernel
             ->expects($this->once())
             ->method('getBundles')
-            ->will($this->returnValue(array('BaseBundle' => new BaseBundle())))
+            ->will($this->returnValue(['BaseBundle' => new BaseBundle()]))
         ;
 
         $parser = new TemplateFilenameParser();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/TemplatePathsCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/TemplatePathsCacheWarmerTest.php
index 75d5934c7906..30d024266372 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/TemplatePathsCacheWarmerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/TemplatePathsCacheWarmerTest.php
@@ -39,13 +39,13 @@ protected function setUp()
     {
         $this->templateFinder = $this
             ->getMockBuilder(TemplateFinderInterface::class)
-            ->setMethods(array('findAllTemplates'))
+            ->setMethods(['findAllTemplates'])
             ->getMock();
 
         $this->fileLocator = $this
             ->getMockBuilder(FileLocator::class)
-            ->setMethods(array('locate'))
-            ->setConstructorArgs(array('/path/to/fallback'))
+            ->setMethods(['locate'])
+            ->setConstructorArgs(['/path/to/fallback'])
             ->getMock();
 
         $this->templateLocator = new TemplateLocator($this->fileLocator);
@@ -68,7 +68,7 @@ public function testWarmUp()
         $this->templateFinder
             ->expects($this->once())
             ->method('findAllTemplates')
-            ->will($this->returnValue(array($template)));
+            ->will($this->returnValue([$template]));
 
         $this->fileLocator
             ->expects($this->once())
@@ -87,7 +87,7 @@ public function testWarmUpEmpty()
         $this->templateFinder
             ->expects($this->once())
             ->method('findAllTemplates')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $this->fileLocator
             ->expects($this->never())
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/ClientTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/ClientTest.php
index d021b0a29ac5..ba253d1d1f51 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/ClientTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/ClientTest.php
@@ -54,7 +54,7 @@ public function testEnableRebootKernel()
     private function getKernelMock()
     {
         $mock = $this->getMockBuilder($this->getKernelClass())
-            ->setMethods(array('shutdown', 'boot', 'handle'))
+            ->setMethods(['shutdown', 'boot', 'handle'])
             ->disableOriginalConstructor()
             ->getMock();
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php
index e2104d36f449..f211f283869e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php
@@ -45,7 +45,7 @@ protected function tearDown()
 
     public function testCacheIsFreshAfterCacheClearedWithWarmup()
     {
-        $input = new ArrayInput(array('cache:clear'));
+        $input = new ArrayInput(['cache:clear']);
         $application = new Application($this->kernel);
         $application->setCatchExceptions(false);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/Fixture/TestAppKernel.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/Fixture/TestAppKernel.php
index 213d75ecc6dc..1022b31a4f45 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/Fixture/TestAppKernel.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/Fixture/TestAppKernel.php
@@ -21,9 +21,9 @@ class TestAppKernel extends Kernel
 {
     public function registerBundles()
     {
-        return array(
+        return [
             new FrameworkBundle(),
-        );
+        ];
     }
 
     public function setRootDir($rootDir)
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CachePruneCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CachePruneCommandTest.php
index 5356f4a0adb5..3a603122e0e2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CachePruneCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CachePruneCommandTest.php
@@ -24,13 +24,13 @@ class CachePruneCommandTest extends TestCase
     public function testCommandWithPools()
     {
         $tester = $this->getCommandTester($this->getKernel(), $this->getRewindableGenerator());
-        $tester->execute(array());
+        $tester->execute([]);
     }
 
     public function testCommandWithNoPools()
     {
         $tester = $this->getCommandTester($this->getKernel(), $this->getEmptyRewindableGenerator());
-        $tester->execute(array());
+        $tester->execute([]);
     }
 
     /**
@@ -50,7 +50,7 @@ private function getRewindableGenerator()
     private function getEmptyRewindableGenerator()
     {
         return new RewindableGenerator(function () {
-            return new \ArrayIterator(array());
+            return new \ArrayIterator([]);
         }, 0);
     }
 
@@ -75,7 +75,7 @@ private function getKernel()
         $kernel
             ->expects($this->once())
             ->method('getBundles')
-            ->willReturn(array());
+            ->willReturn([]);
 
         return $kernel;
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterDebugCommandTest.php
index 8422c0277765..35a9e4ac0cb2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterDebugCommandTest.php
@@ -24,7 +24,7 @@ class RouterDebugCommandTest extends TestCase
     public function testDebugAllRoutes()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('name' => null), array('decorated' => false));
+        $ret = $tester->execute(['name' => null], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Name   Method   Scheme   Host   Path', $tester->getDisplay());
@@ -33,7 +33,7 @@ public function testDebugAllRoutes()
     public function testDebugSingleRoute()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('name' => 'foo'), array('decorated' => false));
+        $ret = $tester->execute(['name' => 'foo'], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Route Name   | foo', $tester->getDisplay());
@@ -44,7 +44,7 @@ public function testDebugSingleRoute()
      */
     public function testDebugInvalidRoute()
     {
-        $this->createCommandTester()->execute(array('name' => 'test'));
+        $this->createCommandTester()->execute(['name' => 'test']);
     }
 
     /**
@@ -58,7 +58,7 @@ public function testLegacyDebugCommand()
 
         $tester = new CommandTester($application->find('debug:router'));
 
-        $tester->execute(array());
+        $tester->execute([]);
 
         $this->assertRegExp('/foo\s+ANY\s+ANY\s+ANY\s+\\/foo/', $tester->getDisplay());
     }
@@ -117,7 +117,7 @@ private function getKernel()
         $kernel
             ->expects($this->once())
             ->method('getBundles')
-            ->willReturn(array())
+            ->willReturn([])
         ;
 
         return $kernel;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
index 0b07bc9f5769..e8d31778a31a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
@@ -26,7 +26,7 @@ class RouterMatchCommandTest extends TestCase
     public function testWithMatchPath()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('path_info' => '/foo', 'foo'), array('decorated' => false));
+        $ret = $tester->execute(['path_info' => '/foo', 'foo'], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Route Name   | foo', $tester->getDisplay());
@@ -35,7 +35,7 @@ public function testWithMatchPath()
     public function testWithNotMatchPath()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('path_info' => '/test', 'foo'), array('decorated' => false));
+        $ret = $tester->execute(['path_info' => '/test', 'foo'], ['decorated' => false]);
 
         $this->assertEquals(1, $ret, 'Returns 1 in case of failure');
         $this->assertContains('None of the routes match the path "/test"', $tester->getDisplay());
@@ -54,7 +54,7 @@ public function testLegacyMatchCommand()
 
         $tester = new CommandTester($application->find('router:match'));
 
-        $tester->execute(array('path_info' => '/'));
+        $tester->execute(['path_info' => '/']);
 
         $this->assertContains('None of the routes match the path "/"', $tester->getDisplay());
     }
@@ -119,7 +119,7 @@ private function getKernel()
         $kernel
             ->expects($this->once())
             ->method('getBundles')
-            ->willReturn(array())
+            ->willReturn([])
         ;
 
         return $kernel;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
index f026945bcd30..622033e897d9 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
@@ -25,24 +25,24 @@ class TranslationDebugCommandTest extends TestCase
 
     public function testDebugMissingMessages()
     {
-        $tester = $this->createCommandTester(array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'en', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester(['foo' => 'foo']);
+        $tester->execute(['locale' => 'en', 'bundle' => 'foo']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
     }
 
     public function testDebugUnusedMessages()
     {
-        $tester = $this->createCommandTester(array(), array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'en', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester([], ['foo' => 'foo']);
+        $tester->execute(['locale' => 'en', 'bundle' => 'foo']);
 
         $this->assertRegExp('/unused/', $tester->getDisplay());
     }
 
     public function testDebugFallbackMessages()
     {
-        $tester = $this->createCommandTester(array(), array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'fr', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester([], ['foo' => 'foo']);
+        $tester->execute(['locale' => 'fr', 'bundle' => 'foo']);
 
         $this->assertRegExp('/fallback
F438
/', $tester->getDisplay());
     }
@@ -50,15 +50,15 @@ public function testDebugFallbackMessages()
     public function testNoDefinedMessages()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('locale' => 'fr', 'bundle' => 'test'));
+        $tester->execute(['locale' => 'fr', 'bundle' => 'test']);
 
         $this->assertRegExp('/No defined or extracted messages for locale "fr"/', $tester->getDisplay());
     }
 
     public function testDebugDefaultDirectory()
     {
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'));
-        $tester->execute(array('locale' => 'en'));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar']);
+        $tester->execute(['locale' => 'en']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -72,8 +72,8 @@ public function testDebugDefaultRootDirectory()
         $this->fs->mkdir($this->translationDir.'/translations');
         $this->fs->mkdir($this->translationDir.'/templates');
 
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'));
-        $tester->execute(array('locale' => 'en'));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar']);
+        $tester->execute(['locale' => 'en']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -87,8 +87,8 @@ public function testDebugCustomDirectory()
             ->with($this->equalTo($this->translationDir))
             ->willThrowException(new \InvalidArgumentException());
 
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'), $kernel);
-        $tester->execute(array('locale' => 'en', 'bundle' => $this->translationDir));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar'], $kernel);
+        $tester->execute(['locale' => 'en', 'bundle' => $this->translationDir]);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -105,8 +105,8 @@ public function testDebugInvalidDirectory()
             ->with($this->equalTo('dir'))
             ->willThrowException(new \InvalidArgumentException());
 
-        $tester = $this->createCommandTester(array(), array(), $kernel);
-        $tester->execute(array('locale' => 'en', 'bundle' => 'dir'));
+        $tester = $this->createCommandTester([], [], $kernel);
+        $tester->execute(['locale' => 'en', 'bundle' => 'dir']);
     }
 
     protected function setUp()
@@ -127,7 +127,7 @@ protected function tearDown()
     /**
      * @return CommandTester
      */
-    private function createCommandTester($extractedMessages = array(), $loadedMessages = array(), $kernel = null)
+    private function createCommandTester($extractedMessages = [], $loadedMessages = [], $kernel = null)
     {
         $translator = $this->getMockBuilder('Symfony\Component\Translation\Translator')
             ->disableOriginalConstructor()
@@ -136,7 +136,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $translator
             ->expects($this->any())
             ->method('getFallbackLocales')
-            ->will($this->returnValue(array('en')));
+            ->will($this->returnValue(['en']));
 
         $extractor = $this->getMockBuilder('Symfony\Component\Translation\Extractor\ExtractorInterface')->getMock();
         $extractor
@@ -159,15 +159,15 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
             );
 
         if (null === $kernel) {
-            $returnValues = array(
-                array('foo', $this->getBundle($this->translationDir)),
-                array('test', $this->getBundle('test')),
-            );
+            $returnValues = [
+                ['foo', $this->getBundle($this->translationDir)],
+                ['test', $this->getBundle('test')],
+            ];
             if (HttpKernel\Kernel::VERSION_ID < 40000) {
-                $returnValues = array(
-                    array('foo', true, $this->getBundle($this->translationDir)),
-                    array('test', true, $this->getBundle('test')),
-                );
+                $returnValues = [
+                    ['foo', true, $this->getBundle($this->translationDir)],
+                    ['test', true, $this->getBundle('test')],
+                ];
             }
             $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\KernelInterface')->getMock();
             $kernel
@@ -184,7 +184,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $kernel
             ->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $kernel
             ->expects($this->any())
@@ -214,18 +214,18 @@ public function testLegacyDebugCommand()
         $kernel
             ->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerInterface')->getMock();
         $container
             ->expects($this->any())
             ->method('get')
-            ->will($this->returnValueMap(array(
-                array('translation.extractor', 1, $extractor),
-                array('translation.reader', 1, $loader),
-                array('translator', 1, $translator),
-                array('kernel', 1, $kernel),
-            )));
+            ->will($this->returnValueMap([
+                ['translation.extractor', 1, $extractor],
+                ['translation.reader', 1, $loader],
+                ['translator', 1, $translator],
+                ['kernel', 1, $kernel],
+            ]));
 
         $kernel
             ->expects($this->any())
@@ -239,7 +239,7 @@ public function testLegacyDebugCommand()
         $application->add($command);
 
         $tester = new CommandTester($application->find('debug:translation'));
-        $tester->execute(array('locale' => 'en'));
+        $tester->execute(['locale' => 'en']);
 
         $this->assertContains('No defined or extracted', $tester->getDisplay());
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
index e92c1756526e..42d4115f1fc7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
@@ -25,8 +25,8 @@ class TranslationUpdateCommandTest extends TestCase
 
     public function testDumpMessagesAndClean()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true]);
         $this->assertRegExp('/foo/', $tester->getDisplay());
         $this->assertRegExp('/1 message was successfully extracted/', $tester->getDisplay());
     }
@@ -38,16 +38,16 @@ public function testDumpMessagesAndCleanInRootDirectory()
         $this->fs->mkdir($this->translationDir.'/translations');
         $this->fs->mkdir($this->translationDir.'/templates');
 
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', '--dump-messages' => true, '--clean' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', '--dump-messages' => true, '--clean' => true]);
         $this->assertRegExp('/foo/', $tester->getDisplay());
         $this->assertRegExp('/1 message was successfully extracted/', $tester->getDisplay());
     }
 
     public function testDumpTwoMessagesAndClean()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo', 'bar' => 'bar')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo', 'bar' => 'bar']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true]);
         $this->assertRegExp('/foo/', $tester->getDisplay());
         $this->assertRegExp('/bar/', $tester->getDisplay());
         $this->assertRegExp('/2 messages were successfully extracted/', $tester->getDisplay());
@@ -55,16 +55,16 @@ public function testDumpTwoMessagesAndClean()
 
     public function testDumpMessagesForSpecificDomain()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo'), 'mydomain' => array('bar' => 'bar')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true, '--domain' => 'mydomain'));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo'], 'mydomain' => ['bar' => 'bar']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true, '--domain' => 'mydomain']);
         $this->assertRegExp('/bar/', $tester->getDisplay());
         $this->assertRegExp('/1 message was successfully extracted/', $tester->getDisplay());
     }
 
     public function testWriteMessages()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--force' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--force' => true]);
         $this->assertRegExp('/Translation files were successfully updated./', $tester->getDisplay());
     }
 
@@ -75,15 +75,15 @@ public function testWriteMessagesInRootDirectory()
         $this->fs->mkdir($this->translationDir.'/translations');
         $this->fs->mkdir($this->translationDir.'/templates');
 
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', '--force' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', '--force' => true]);
         $this->assertRegExp('/Translation files were successfully updated./', $tester->getDisplay());
     }
 
     public function testWriteMessagesForSpecificDomain()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo'), 'mydomain' => array('bar' => 'bar')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--force' => true, '--domain' => 'mydomain'));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo'], 'mydomain' => ['bar' => 'bar']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--force' => true, '--domain' => 'mydomain']);
         $this->assertRegExp('/Translation files were successfully updated./', $tester->getDisplay());
     }
 
@@ -105,7 +105,7 @@ protected function tearDown()
     /**
      * @return CommandTester
      */
-    private function createCommandTester($extractedMessages = array(), $loadedMessages = array(), HttpKernel\KernelInterface $kernel = null)
+    private function createCommandTester($extractedMessages = [], $loadedMessages = [], HttpKernel\KernelInterface $kernel = null)
     {
         $translator = $this->getMockBuilder('Symfony\Component\Translation\Translator')
             ->disableOriginalConstructor()
@@ -114,7 +114,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $translator
             ->expects($this->any())
             ->method('getFallbackLocales')
-            ->will($this->returnValue(array('en')));
+            ->will($this->returnValue(['en']));
 
         $extractor = $this->getMockBuilder('Symfony\Component\Translation\Extractor\ExtractorInterface')->getMock();
         $extractor
@@ -143,19 +143,19 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
             ->expects($this->any())
             ->method('getFormats')
             ->will(
-                $this->returnValue(array('xlf', 'yml'))
+                $this->returnValue(['xlf', 'yml'])
             );
 
         if (null === $kernel) {
-            $returnValues = array(
-                array('foo', $this->getBundle($this->translationDir)),
-                array('test', $this->getBundle('test')),
-            );
+            $returnValues = [
+                ['foo', $this->getBundle($this->translationDir)],
+                ['test', $this->getBundle('test')],
+            ];
             if (HttpKernel\Kernel::VERSION_ID < 40000) {
-                $returnValues = array(
-                    array('foo', true, $this->getBundle($this->translationDir)),
-                    array('test', true, $this->getBundle('test')),
-                );
+                $returnValues = [
+                    ['foo', true, $this->getBundle($this->translationDir)],
+                    ['test', true, $this->getBundle('test')],
+                ];
             }
             $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\KernelInterface')->getMock();
             $kernel
@@ -172,7 +172,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $kernel
             ->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $kernel
             ->expects($this->any())
@@ -203,19 +203,19 @@ public function testLegacyUpdateCommand()
         $kernel
             ->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerInterface')->getMock();
         $container
             ->expects($this->any())
             ->method('get')
-            ->will($this->returnValueMap(array(
-                array('translation.extractor', 1, $extractor),
-                array('translation.reader', 1, $loader),
-                array('translation.writer', 1, $writer),
-                array('translator', 1, $translator),
-                array('kernel', 1, $kernel),
-            )));
+            ->will($this->returnValueMap([
+                ['translation.extractor', 1, $extractor],
+                ['translation.reader', 1, $loader],
+                ['translation.writer', 1, $writer],
+                ['translator', 1, $translator],
+                ['kernel', 1, $kernel],
+            ]));
 
         $kernel
             ->expects($this->any())
@@ -229,7 +229,7 @@ public function testLegacyUpdateCommand()
         $application->add($command);
 
         $tester = new CommandTester($application->find('translation:update'));
-        $tester->execute(array('locale' => 'en'));
+        $tester->execute(['locale' => 'en']);
 
         $this->assertContains('You must choose one of --force or --dump-messages', $tester->getDisplay());
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/YamlLintCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/YamlLintCommandTest.php
index 2daa2e322831..a71fb824d57c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/YamlLintCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/YamlLintCommandTest.php
@@ -36,8 +36,8 @@ public function testLintCorrectFile()
         $filename = $this->createFile('foo: bar');
 
         $tester->execute(
-            array('filename' => $filename),
-            array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false)
+            ['filename' => $filename],
+            ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]
         );
 
         $this->assertEquals(0, $tester->getStatusCode(), 'Returns 0 in case of success');
@@ -52,7 +52,7 @@ public function testLintIncorrectFile()
         $tester = $this->createCommandTester();
         $filename = $this->createFile($incorrectContent);
 
-        $tester->execute(array('filename' => $filename), array('decorated' => false));
+        $tester->execute(['filename' => $filename], ['decorated' => false]);
 
         $this->assertEquals(1, $tester->getStatusCode(), 'Returns 1 in case of error');
         $this->assertContains('Unable to parse at line 3 (near "bar").', trim($tester->getDisplay()));
@@ -67,7 +67,7 @@ public function testLintFileNotReadable()
         $filename = $this->createFile('');
         unlink($filename);
 
-        $tester->execute(array('filename' => $filename), array('decorated' => false));
+        $tester->execute(['filename' => $filename], ['decorated' => false]);
     }
 
     public function testGetHelp()
@@ -103,8 +103,8 @@ public function testLintFilesFromBundleDirectory()
     {
         $tester = $this->createCommandTester($this->getKernelAwareApplicationMock());
         $tester->execute(
-            array('filename' => '@AppBundle/Resources'),
-            array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false)
+            ['filename' => '@AppBundle/Resources'],
+            ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]
         );
 
         $this->assertEquals(0, $tester->getStatusCode(), 'Returns 0 in case of success');
@@ -186,7 +186,7 @@ private function getKernelAwareApplicationMock()
     protected function setUp()
     {
         @mkdir(sys_get_temp_dir().'/yml-lint-test');
-        $this->files = array();
+        $this->files = [];
     }
 
     protected function tearDown()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
index c977bb13a131..8c25ef9672f4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
@@ -29,30 +29,30 @@ public function testBundleInterfaceImplementation()
     {
         $bundle = $this->getMockBuilder('Symfony\Component\HttpKernel\Bundle\BundleInterface')->getMock();
 
-        $kernel = $this->getKernel(array($bundle), true);
+        $kernel = $this->getKernel([$bundle], true);
 
         $application = new Application($kernel);
-        $application->doRun(new ArrayInput(array('list')), new NullOutput());
+        $application->doRun(new ArrayInput(['list']), new NullOutput());
     }
 
     public function testBundleCommandsAreRegistered()
     {
-        $bundle = $this->createBundleMock(array());
+        $bundle = $this->createBundleMock([]);
 
-        $kernel = $this->getKernel(array($bundle), true);
+        $kernel = $this->getKernel([$bundle], true);
 
         $application = new Application($kernel);
-        $application->doRun(new ArrayInput(array('list')), new NullOutput());
+        $application->doRun(new ArrayInput(['list']), new NullOutput());
 
         // Calling twice: registration should only be done once.
-        $application->doRun(new ArrayInput(array('list')), new NullOutput());
+        $application->doRun(new ArrayInput(['list']), new NullOutput());
     }
 
     public function testBundleCommandsAreRetrievable()
     {
-        $bundle = $this->createBundleMock(array());
+        $bundle = $this->createBundleMock([]);
 
-        $kernel = $this->getKernel(array($bundle));
+        $kernel = $this->getKernel([$bundle]);
 
         $application = new Application($kernel);
         $application->all();
@@ -65,9 +65,9 @@ public function testBundleSingleCommandIsRetrievable()
     {
         $command = new Command('example');
 
-        $bundle = $this->createBundleMock(array($command));
+        $bundle = $this->createBundleMock([$command]);
 
-        $kernel = $this->getKernel(array($bundle));
+        $kernel = $this->getKernel([$bundle]);
 
         $application = new Application($kernel);
 
@@ -78,9 +78,9 @@ public function testBundleCommandCanBeFound()
     {
         $command = new Command('example');
 
-        $bundle = $this->createBundleMock(array($command));
+        $bundle = $this->createBundleMock([$command]);
 
-        $kernel = $this->getKernel(array($bundle));
+        $kernel = $this->getKernel([$bundle]);
 
         $application = new Application($kernel);
 
@@ -90,11 +90,11 @@ public function testBundleCommandCanBeFound()
     public function testBundleCommandCanBeFoundByAlias()
     {
         $command = new Command('example');
-        $command->setAliases(array('alias'));
+        $command->setAliases(['alias']);
 
-        $bundle = $this->createBundleMock(array($command));
+        $bundle = $this->createBundleMock([$command]);
 
-        $kernel = $this->getKernel(array($bundle));
+        $kernel = $this->getKernel([$bundle]);
 
         $application = new Application($kernel);
 
@@ -103,30 +103,30 @@ public function testBundleCommandCanBeFoundByAlias()
 
     public function testBundleCommandsHaveRightContainer()
     {
-        $command = $this->getMockForAbstractClass('Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand', array('foo'), '', true, true, true, array('setContainer'));
+        $command = $this->getMockForAbstractClass('Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand', ['foo'], '', true, true, true, ['setContainer']);
         $command->setCode(function () {});
         $command->expects($this->exactly(2))->method('setContainer');
 
-        $application = new Application($this->getKernel(array(), true));
+        $application = new Application($this->getKernel([], true));
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
         $application->add($command);
         $tester = new ApplicationTester($application);
 
         // set container is called here
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
 
         // as the container might have change between two runs, setContainer must called again
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
     }
 
     public function testBundleCommandCanOverriddeAPreExistingCommandWithTheSameName()
     {
         $command = new Command('example');
 
-        $bundle = $this->createBundleMock(array($command));
+        $bundle = $this->createBundleMock([$command]);
 
-        $kernel = $this->getKernel(array($bundle));
+        $kernel = $this->getKernel([$bundle]);
 
         $application = new Application($kernel);
         $newCommand = new Command('example');
@@ -140,14 +140,14 @@ public function testRunOnlyWarnsOnUnregistrableCommand()
         $container = new ContainerBuilder();
         $container->register('event_dispatcher', EventDispatcher::class);
         $container->register(ThrowingCommand::class, ThrowingCommand::class);
-        $container->setParameter('console.command.ids', array(ThrowingCommand::class => ThrowingCommand::class));
+        $container->setParameter('console.command.ids', [ThrowingCommand::class => ThrowingCommand::class]);
 
         $kernel = $this->getMockBuilder(KernelInterface::class)->getMock();
         $kernel
             ->method('getBundles')
-            ->willReturn(array($this->createBundleMock(
-                array((new Command('fine'))->setCode(function (InputInterface $input, OutputInterface $output) { $output->write('fine'); }))
-            )));
+            ->willReturn([$this->createBundleMock(
+                [(new Command('fine'))->setCode(function (InputInterface $input, OutputInterface $output) { $output->write('fine'); })]
+            )]);
         $kernel
             ->method('getContainer')
             ->willReturn($container);
@@ -156,7 +156,7 @@ public function testRunOnlyWarnsOnUnregistrableCommand()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'fine'));
+        $tester->run(['command' => 'fine']);
         $output = $tester->getDisplay();
 
         $this->assertSame(0, $tester->getStatusCode());
@@ -173,9 +173,9 @@ public function testRegistrationErrorsAreDisplayedOnCommandNotFound()
         $kernel = $this->getMockBuilder(KernelInterface::class)->getMock();
         $kernel
             ->method('getBundles')
-            ->willReturn(array($this->createBundleMock(
-                array((new Command(null))->setCode(function (InputInterface $input, OutputInterface $output) { $output->write('fine'); }))
-            )));
+            ->willReturn([$this->createBundleMock(
+                [(new Command(null))->setCode(function (InputInterface $input, OutputInterface $output) { $output->write('fine'); })]
+            )]);
         $kernel
             ->method('getContainer')
             ->willReturn($container);
@@ -184,7 +184,7 @@ public function testRegistrationErrorsAreDisplayedOnCommandNotFound()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'fine'));
+        $tester->run(['command' => 'fine']);
         $output = $tester->getDisplay();
 
         $this->assertSame(1, $tester->getStatusCode());
@@ -212,14 +212,14 @@ private function getKernel(array $bundles, $useDispatcher = false)
         $container
             ->expects($this->exactly(2))
             ->method('hasParameter')
-            ->withConsecutive(array('console.command.ids'), array('console.lazy_command.ids'))
+            ->withConsecutive(['console.command.ids'], ['console.lazy_command.ids'])
             ->willReturnOnConsecutiveCalls(true, true)
         ;
         $container
             ->expects($this->exactly(2))
             ->method('getParameter')
-            ->withConsecutive(array('console.lazy_command.ids'), array('console.command.ids'))
-            ->willReturnOnConsecutiveCalls(array(), array())
+            ->withConsecutive(['console.lazy_command.ids'], ['console.command.ids'])
+            ->willReturnOnConsecutiveCalls([], [])
         ;
 
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\KernelInterface')->getMock();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
index ab5c95a7d8b8..9bc05e538c76 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
@@ -83,13 +83,13 @@ public function getDescribeContainerDefinitionTestData()
     /** @dataProvider getDescribeContainerDefinitionWithArgumentsShownTestData */
     public function testDescribeContainerDefinitionWithArgumentsShown(Definition $definition, $expectedDescription)
     {
-        $this->assertDescription($expectedDescription, $definition, array('show_arguments' => true));
+        $this->assertDescription($expectedDescription, $definition, ['show_arguments' => true]);
     }
 
     public function getDescribeContainerDefinitionWithArgumentsShownTestData()
     {
         $definitions = ObjectsProvider::getContainerDefinitions();
-        $definitionsWithArgs = array();
+        $definitionsWithArgs = [];
 
         foreach ($definitions as $key => $definition) {
             $definitionsWithArgs[str_replace('definition_', 'definition_arguments_', $key)] = $definition;
@@ -110,7 +110,7 @@ public function getDescribeContainerAliasTestData()
     }
 
     /** @dataProvider getDescribeContainerDefinitionWhichIsAnAliasTestData */
-    public function testDescribeContainerDefinitionWhichIsAnAlias(Alias $alias, $expectedDescription, ContainerBuilder $builder, $options = array())
+    public function testDescribeContainerDefinitionWhichIsAnAlias(Alias $alias, $expectedDescription, ContainerBuilder $builder, $options = [])
     {
         $this->assertDescription($expectedDescription, $builder, $options);
     }
@@ -122,7 +122,7 @@ public function getDescribeContainerDefinitionWhichIsAnAliasTestData()
         $builder->setDefinition('service_2', $builder->getDefinition('definition_2'));
 
         $aliases = ObjectsProvider::getContainerAliases();
-        $aliasesWithDefinitions = array();
+        $aliasesWithDefinitions = [];
         foreach ($aliases as $name => $alias) {
             $aliasesWithDefinitions[str_replace('alias_', 'alias_with_definition_', $name)] = $alias;
         }
@@ -131,7 +131,7 @@ public function getDescribeContainerDefinitionWhichIsAnAliasTestData()
         $data = $this->getDescriptionTestData($aliasesWithDefinitions);
         foreach ($aliases as $name => $alias) {
             $data[$i][] = $builder;
-            $data[$i][] = array('id' => $name);
+            $data[$i][] = ['id' => $name];
             ++$i;
         }
 
@@ -148,8 +148,8 @@ public function getDescribeContainerParameterTestData()
     {
         $data = $this->getDescriptionTestData(ObjectsProvider::getContainerParameter());
 
-        $data[0][] = array('parameter' => 'database_name');
-        $data[1][] = array('parameter' => 'twig.form.resources');
+        $data[0][] = ['parameter' => 'database_name'];
+        $data[1][] = ['parameter' => 'twig.form.resources'];
 
         return $data;
     }
@@ -180,14 +180,14 @@ abstract protected function getDescriptor();
 
     abstract protected function getFormat();
 
-    private function assertDescription($expectedDescription, $describedObject, array $options = array())
+    private function assertDescription($expectedDescription, $describedObject, array $options = [])
     {
         $options['raw_output'] = true;
         $options['raw_text'] = true;
         $output = new BufferedOutput(BufferedOutput::VERBOSITY_NORMAL, true);
 
         if ('txt' === $this->getFormat()) {
-            $options['output'] = new SymfonyStyle(new ArrayInput(array()), $output);
+            $options['output'] = new SymfonyStyle(new ArrayInput([]), $output);
         }
 
         $this->getDescriptor()->describe($output, $describedObject, $options);
@@ -201,10 +201,10 @@ private function assertDescription($expectedDescription, $describedObject, array
 
     private function getDescriptionTestData(array $objects)
     {
-        $data = array();
+        $data = [];
         foreach ($objects as $name => $object) {
             $description = file_get_contents(sprintf('%s/../../Fixtures/Descriptor/%s.%s', __DIR__, $name, $this->getFormat()));
-            $data[] = array($object, $description);
+            $data[] = [$object, $description];
         }
 
         return $data;
@@ -212,19 +212,19 @@ private function getDescriptionTestData(array $objects)
 
     private function getContainerBuilderDescriptionTestData(array $objects)
     {
-        $variations = array(
-            'services' => array('show_private' => true),
-            'public' => array('show_private' => false),
-            'tag1' => array('show_private' => true, 'tag' => 'tag1'),
-            'tags' => array('group_by' => 'tags', 'show_private' => true),
-            'arguments' => array('show_private' => false, 'show_arguments' => true),
-        );
+        $variations = [
+            'services' => ['show_private' => true],
+            'public' => ['show_private' => false],
+            'tag1' => ['show_private' => true, 'tag' => 'tag1'],
+            'tags' => ['group_by' => 'tags', 'show_private' => true],
+            'arguments' => ['show_private' => false, 'show_arguments' => true],
+        ];
 
-        $data = array();
+        $data = [];
         foreach ($objects as $name => $object) {
             foreach ($variations as $suffix => $options) {
                 $description = file_get_contents(sprintf('%s/../../Fixtures/Descriptor/%s_%s.%s', __DIR__, $name, $suffix, $this->getFormat()));
-                $data[] = array($object, $description, $options);
+                $data[] = [$object, $description, $options];
             }
         }
 
@@ -233,16 +233,16 @@ private function getContainerBuilderDescriptionTestData(array $objects)
 
     private function getEventDispatcherDescriptionTestData(array $objects)
     {
-        $variations = array(
-            'events' => array(),
-            'event1' => array('event' => 'event1'),
-        );
+        $variations = [
+            'events' => [],
+            'event1' => ['event' => 'event1'],
+        ];
 
-        $data = array();
+        $data = [];
         foreach ($objects as $name => $object) {
             foreach ($variations as $suffix => $options) {
                 $description = file_get_contents(sprintf('%s/../../Fixtures/Descriptor/%s_%s.%s', __DIR__, $name, $suffix, $this->getFormat()));
-                $data[] = array($object, $description, $options);
+                $data[] = [$object, $description, $options];
             }
         }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
index b46e32235381..c33f603a714c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
@@ -31,60 +31,60 @@ public static function getRouteCollections()
             $collection1->add($name, $route);
         }
 
-        return array('route_collection_1' => $collection1);
+        return ['route_collection_1' => $collection1];
     }
 
     public static function getRoutes()
     {
-        return array(
+        return [
             'route_1' => new RouteStub(
                 '/hello/{name}',
-                array('name' => 'Joseph'),
-                array('name' => '[a-z]+'),
-                array('opt1' => 'val1', 'opt2' => 'val2'),
+                ['name' => 'Joseph'],
+                ['name' => '[a-z]+'],
+                ['opt1' => 'val1', 'opt2' => 'val2'],
                 'localhost',
-                array('http', 'https'),
-                array('get', 'head')
+                ['http', 'https'],
+                ['get', 'head']
             ),
             'route_2' => new RouteStub(
                 '/name/add',
-                array(),
-                array(),
-                array('opt1' => 'val1', 'opt2' => 'val2'),
+                [],
+                [],
+                ['opt1' => 'val1', 'opt2' => 'val2'],
                 'localhost',
-                array('http', 'https'),
-                array('put', 'post')
+                ['http', 'https'],
+                ['put', 'post']
             ),
-        );
+        ];
     }
 
     public static function getContainerParameters()
     {
-        return array(
-            'parameters_1' => new ParameterBag(array(
+        return [
+            'parameters_1' => new ParameterBag([
                 'integer' => 12,
                 'string' => 'Hello world!',
                 'boolean' => true,
-                'array' => array(12, 'Hello world!', true),
-            )),
-        );
+                'array' => [12, 'Hello world!', true],
+            ]),
+        ];
     }
 
     public static function getContainerParameter()
     {
         $builder = new ContainerBuilder();
         $builder->setParameter('database_name', 'symfony');
-        $builder->setParameter('twig.form.resources', array(
+        $builder->setParameter('twig.form.resources', [
             'bootstrap_3_horizontal_layout.html.twig',
             'bootstrap_3_layout.html.twig',
             'form_div_layout.html.twig',
             'form_table_layout.html.twig',
-        ));
+        ]);
 
-        return array(
+        return [
             'parameter' => $builder,
             'array_parameter' => $builder,
-        );
+        ];
     }
 
     public static function getContainerBuilders()
@@ -93,7 +93,7 @@ public static function getContainerBuilders()
         $builder1->setDefinitions(self::getContainerDefinitions());
         $builder1->setAliases(self::getContainerAliases());
 
-        return array('builder_1' => $builder1);
+        return ['builder_1' => $builder1];
     }
 
     public static function getContainerDefinitions()
@@ -101,7 +101,7 @@ public static function getContainerDefinitions()
         $definition1 = new Definition('Full\\Qualified\\Class1');
         $definition2 = new Definition('Full\\Qualified\\Class2');
 
-        return array(
+        return [
             'definition_1' => $definition1
                 ->setPublic(true)
                 ->setSynthetic(false)
@@ -109,37 +109,37 @@ public static function getContainerDefinitions()
                 ->setAbstract(true)
                 ->addArgument(new Reference('definition2'))
                 ->addArgument('%parameter%')
-                ->addArgument(new Definition('inline_service', array('arg1', 'arg2')))
-                ->addArgument(array(
+                ->addArgument(new Definition('inline_service', ['arg1', 'arg2']))
+                ->addArgument([
                     'foo',
                     new Reference('definition2'),
                     new Definition('inline_service'),
-                ))
-                ->addArgument(new IteratorArgument(array(
+                ])
+                ->addArgument(new IteratorArgument([
                     new Reference('definition_1'),
                     new Reference('definition_2'),
-                )))
-                ->setFactory(array('Full\\Qualified\\FactoryClass', 'get')),
+                ]))
+                ->setFactory(['Full\\Qualified\\FactoryClass', 'get']),
             'definition_2' => $definition2
                 ->setPublic(false)
                 ->setSynthetic(true)
                 ->setFile('/path/to/file')
                 ->setLazy(false)
                 ->setAbstract(false)
-                ->addTag('tag1', array('attr1' => 'val1', 'attr2' => 'val2'))
-                ->addTag('tag1', array('attr3' => 'val3'))
+                ->addTag('tag1', ['attr1' => 'val1', 'attr2' => 'val2'])
+                ->addTag('tag1', ['attr3' => 'val3'])
                 ->addTag('tag2')
-                ->addMethodCall('setMailer', array(new Reference('mailer')))
-                ->setFactory(array(new Reference('factory.service'), 'get')),
-        );
+                ->addMethodCall('setMailer', [new Reference('mailer')])
+                ->setFactory([new Reference('factory.service'), 'get']),
+        ];
     }
 
     public static function getContainerAliases()
     {
-        return array(
+        return [
             'alias_1' => new Alias('service_1', true),
             'alias_2' => new Alias('service_2', false),
-        );
+        ];
     }
 
     public static function getEventDispatchers()
@@ -150,20 +150,20 @@ public static function getEventDispatchers()
         $eventDispatcher->addListener('event1', function () { return 'Closure'; }, -1);
         $eventDispatcher->addListener('event2', new CallableClass());
 
-        return array('event_dispatcher_1' => $eventDispatcher);
+        return ['event_dispatcher_1' => $eventDispatcher];
     }
 
     public static function getCallables()
     {
-        $callables = array(
+        $callables = [
             'callable_1' => 'array_key_exists',
-            'callable_2' => array('Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\CallableClass', 'staticMethod'),
-            'callable_3' => array(new CallableClass(), 'method'),
+            'callable_2' => ['Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\CallableClass', 'staticMethod'],
+            'callable_3' => [new CallableClass(), 'method'],
             'callable_4' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\CallableClass::staticMethod',
-            'callable_5' => array('Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\ExtendedCallableClass', 'parent::staticMethod'),
+            'callable_5' => ['Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\ExtendedCallableClass', 'parent::staticMethod'],
             'callable_6' => function () { return 'Closure'; },
             'callable_7' => new CallableClass(),
-        );
+        ];
 
         if (\PHP_VERSION_ID >= 70100) {
             $callables['callable_from_callable'] = \Closure::fromCallable(new CallableClass());
@@ -199,6 +199,6 @@ class RouteStub extends Route
 {
     public function compile()
     {
-        return new CompiledRoute('', '#PATH_REGEX#', array(), array(), '#HOST_REGEX#');
+        return new CompiledRoute('', '#PATH_REGEX#', [], [], '#HOST_REGEX#');
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerNameParserTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerNameParserTest.php
index b5edad94ca85..66729f5fa4ea 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerNameParserTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerNameParserTest.php
@@ -100,13 +100,13 @@ public function testMissingControllers($name)
     public function getMissingControllersTest()
     {
         // a normal bundle
-        $bundles = array(
-            array('FooBundle:Fake:index'),
-        );
+        $bundles = [
+            ['FooBundle:Fake:index'],
+        ];
 
         // a bundle with children
         if (Kernel::VERSION_ID < 40000) {
-            $bundles[] = array('SensioFooBundle:Fake:index');
+            $bundles[] = ['SensioFooBundle:Fake:index'];
         }
 
         return $bundles;
@@ -136,21 +136,21 @@ public function testInvalidBundleName($bundleName, $suggestedBundleName)
 
     public function getInvalidBundleNameTests()
     {
-        return array(
-            'Alternative will be found using levenshtein' => array('FoodBundle:Default:index', 'FooBundle:Default:index'),
-            'Alternative will be found using partial match' => array('FabpotFooBund:Default:index', 'FabpotFooBundle:Default:index'),
-            'Bundle does not exist at all' => array('CrazyBundle:Default:index', false),
-        );
+        return [
+            'Alternative will be found using levenshtein' => ['FoodBundle:Default:index', 'FooBundle:Default:index'],
+            'Alternative will be found using partial match' => ['FabpotFooBund:Default:index', 'FabpotFooBundle:Default:index'],
+            'Bundle does not exist at all' => ['CrazyBundle:Default:index', false],
+        ];
     }
 
     private function createParser()
     {
-        $bundles = array(
-            'SensioFooBundle' => array($this->getBundle('TestBundle\Fabpot\FooBundle', 'FabpotFooBundle'), $this->getBundle('TestBundle\Sensio\FooBundle', 'SensioFooBundle')),
-            'SensioCmsFooBundle' => array($this->getBundle('TestBundle\Sensio\Cms\FooBundle', 'SensioCmsFooBundle')),
-            'FooBundle' => array($this->getBundle('TestBundle\FooBundle', 'FooBundle')),
-            'FabpotFooBundle' => array($this->getBundle('TestBundle\Fabpot\FooBundle', 'FabpotFooBundle'), $this->getBundle('TestBundle\Sensio\FooBundle', 'SensioFooBundle')),
-        );
+        $bundles = [
+            'SensioFooBundle' => [$this->getBundle('TestBundle\Fabpot\FooBundle', 'FabpotFooBundle'), $this->getBundle('TestBundle\Sensio\FooBundle', 'SensioFooBundle')],
+            'SensioCmsFooBundle' => [$this->getBundle('TestBundle\Sensio\Cms\FooBundle', 'SensioCmsFooBundle')],
+            'FooBundle' => [$this->getBundle('TestBundle\FooBundle', 'FooBundle')],
+            'FabpotFooBundle' => [$this->getBundle('TestBundle\Fabpot\FooBundle', 'FabpotFooBundle'), $this->getBundle('TestBundle\Sensio\FooBundle', 'SensioFooBundle')],
+        ];
 
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\KernelInterface')->getMock();
         $kernel
@@ -165,13 +165,13 @@ private function createParser()
             }))
         ;
 
-        $bundles = array(
+        $bundles = [
             'SensioFooBundle' => $this->getBundle('TestBundle\Fabpot\FooBundle', 'FabpotFooBundle'),
             'SensioCmsFooBundle' => $this->getBundle('TestBundle\Sensio\Cms\FooBundle', 'SensioCmsFooBundle'),
             'FoooooBundle' => $this->getBundle('TestBundle\FooBundle', 'FoooooBundle'),
             'FooBundle' => $this->getBundle('TestBundle\FooBundle', 'FooBundle'),
             'FabpotFooBundle' => $this->getBundle('TestBundle\Fabpot\FooBundle', 'FabpotFooBundle'),
-        );
+        ];
         $kernel
             ->expects($this->any())
             ->method('getBundles')
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerResolverTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerResolverTest.php
index 5880ee0186a1..93ce1527ba23 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerResolverTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerResolverTest.php
@@ -83,7 +83,7 @@ class_exists(AbstractControllerTest::class);
         $request = Request::create('/');
         $request->attributes->set('_controller', TestAbstractController::class.':testAction');
 
-        $this->assertSame(array($controller, 'testAction'), $resolver->getController($request));
+        $this->assertSame([$controller, 'testAction'], $resolver->getController($request));
         $this->assertSame($container, $controller->getContainer());
     }
 
@@ -101,7 +101,7 @@ class_exists(AbstractControllerTest::class);
         $request = Request::create('/');
         $request->attributes->set('_controller', TestAbstractController::class.'::fooAction');
 
-        $this->assertSame(array($controller, 'fooAction'), $resolver->getController($request));
+        $this->assertSame([$controller, 'fooAction'], $resolver->getController($request));
         $this->assertSame($container, $controller->setContainer($container));
     }
 
@@ -119,7 +119,7 @@ class_exists(AbstractControllerTest::class);
         $request = Request::create('/');
         $request->attributes->set('_controller', DummyController::class.':fooAction');
 
-        $this->assertSame(array($controller, 'fooAction'), $resolver->getController($request));
+        $this->assertSame([$controller, 'fooAction'], $resolver->getController($request));
         $this->assertSame($container, $controller->getContainer());
     }
 
@@ -139,7 +139,7 @@ class_exists(AbstractControllerTest::class);
         $request = Request::create('/');
         $request->attributes->set('_controller', TestAbstractController::class.'::fooAction');
 
-        $this->assertSame(array($controller, 'fooAction'), $resolver->getController($request));
+        $this->assertSame([$controller, 'fooAction'], $resolver->getController($request));
         $this->assertSame($controllerContainer, $controller->setContainer($container));
     }
 
@@ -159,7 +159,7 @@ class_exists(AbstractControllerTest::class);
         $request = Request::create('/');
         $request->attributes->set('_controller', DummyController::class.':fooAction');
 
-        $this->assertSame(array($controller, 'fooAction'), $resolver->getController($request));
+        $this->assertSame([$controller, 'fooAction'], $resolver->getController($request));
         $this->assertSame($controllerContainer, $controller->getContainer());
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
index e72f53649b3e..36b6bd95b7ec 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
@@ -59,7 +59,7 @@ public function testForward()
     public function testGetUser()
     {
         $user = new User('user', 'pass');
-        $token = new UsernamePasswordToken($user, 'pass', 'default', array('ROLE_USER'));
+        $token = new UsernamePasswordToken($user, 'pass', 'default', ['ROLE_USER']);
 
         $controller = $this->createController();
         $controller->setContainer($this->getContainerWithTokenStorage($token));
@@ -121,7 +121,7 @@ public function testJson()
         $controller = $this->createController();
         $controller->setContainer(new Container());
 
-        $response = $controller->json(array());
+        $response = $controller->json([]);
         $this->assertInstanceOf(JsonResponse::class, $response);
         $this->assertEquals('[]', $response->getContent());
     }
@@ -134,7 +134,7 @@ public function testJsonWithSerializer()
         $serializer
             ->expects($this->once())
             ->method('serialize')
-            ->with(array(), 'json', array('json_encode_options' => JsonResponse::DEFAULT_ENCODING_OPTIONS))
+            ->with([], 'json', ['json_encode_options' => JsonResponse::DEFAULT_ENCODING_OPTIONS])
             ->will($this->returnValue('[]'));
 
         $container->set('serializer', $serializer);
@@ -142,7 +142,7 @@ public function testJsonWithSerializer()
         $controller = $this->createController();
         $controller->setContainer($container);
 
-        $response = $controller->json(array());
+        $response = $controller->json([]);
         $this->assertInstanceOf(JsonResponse::class, $response);
         $this->assertEquals('[]', $response->getContent());
     }
@@ -155,7 +155,7 @@ public function testJsonWithSerializerContextOverride()
         $serializer
             ->expects($this->once())
             ->method('serialize')
-            ->with(array(), 'json', array('json_encode_options' => 0, 'other' => 'context'))
+            ->with([], 'json', ['json_encode_options' => 0, 'other' => 'context'])
             ->will($this->returnValue('[]'));
 
         $container->set('serializer', $serializer);
@@ -163,7 +163,7 @@ public function testJsonWithSerializerContextOverride()
         $controller = $this->createController();
         $controller->setContainer($container);
 
-        $response = $controller->json(array(), 200, array(), array('json_encode_options' => 0, 'other' => 'context'));
+        $response = $controller->json([], 200, [], ['json_encode_options' => 0, 'other' => 'context']);
         $this->assertInstanceOf(JsonResponse::class, $response);
         $this->assertEquals('[]', $response->getContent());
         $response->setEncodingOptions(JSON_FORCE_OBJECT);
@@ -388,7 +388,7 @@ public function testAddFlash()
         $controller->setContainer($container);
         $controller->addFlash('foo', 'bar');
 
-        $this->assertSame(array('bar'), $flashBag->get('foo'));
+        $this->assertSame(['bar'], $flashBag->get('foo'));
     }
 
     public function testCreateAccessDeniedException()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/RedirectControllerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/RedirectControllerTest.php
index 9a1883b6d661..076912d6e2d6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/RedirectControllerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/RedirectControllerTest.php
@@ -53,17 +53,17 @@ public function testRoute($permanent, $ignoreAttributes, $expectedCode, $expecte
 
         $route = 'new-route';
         $url = '/redirect-url';
-        $attributes = array(
+        $attributes = [
             'route' => $route,
             'permanent' => $permanent,
             '_route' => 'current-route',
-            '_route_params' => array(
+            '_route_params' => [
                 'route' => $route,
                 'permanent' => $permanent,
                 'additional-parameter' => 'value',
                 'ignoreAttributes' => $ignoreAttributes,
-            ),
-        );
+            ],
+        ];
 
         $request->attributes = new ParameterBag($attributes);
 
@@ -84,12 +84,12 @@ public function testRoute($permanent, $ignoreAttributes, $expectedCode, $expecte
 
     public function provider()
     {
-        return array(
-            array(true, false, 301, array('additional-parameter' => 'value')),
-            array(false, false, 302, array('additional-parameter' => 'value')),
-            array(false, true, 302, array()),
-            array(false, array('additional-parameter'), 302, array()),
-        );
+        return [
+            [true, false, 301, ['additional-parameter' => 'value']],
+            [false, false, 302, ['additional-parameter' => 'value']],
+            [false, true, 302, []],
+            [false, ['additional-parameter'], 302, []],
+        ];
     }
 
     public function testEmptyPath()
@@ -169,33 +169,33 @@ public function testUrlRedirectDefaultPortParameters()
 
     public function urlRedirectProvider()
     {
-        return array(
+        return [
             // Standard ports
-            array('http',  null, null,  'http',  80,   ''),
-            array('http',  80,   null,  'http',  80,   ''),
-            array('https', null, null,  'http',  80,   ''),
-            array('https', 80,   null,  'http',  80,   ''),
+            ['http',  null, null,  'http',  80,   ''],
+            ['http',  80,   null,  'http',  80,   ''],
+            ['https', null, null,  'http',  80,   ''],
+            ['https', 80,   null,  'http',  80,   ''],
 
-            array('http',  null,  null, 'https', 443,  ''),
-            array('http',  null,  443,  'https', 443,  ''),
-            array('https', null,  null, 'https', 443,  ''),
-            array('https', null,  443,  'https', 443,  ''),
+            ['http',  null,  null, 'https', 443,  ''],
+            ['http',  null,  443,  'https', 443,  ''],
+            ['https', null,  null, 'https', 443,  ''],
+            ['https', null,  443,  'https', 443,  ''],
 
             // Non-standard ports
-            array('http',  null,  null, 'http',  8080, ':8080'),
-            array('http',  4080,  null, 'http',  8080, ':4080'),
-            array('http',  80,    null, 'http',  8080, ''),
-            array('https', null,  null, 'http',  8080, ''),
-            array('https', null,  8443, 'http',  8080, ':8443'),
-            array('https', null,  443,  'http',  8080, ''),
-
-            array('https', null,  null, 'https', 8443, ':8443'),
-            array('https', null,  4443, 'https', 8443, ':4443'),
-            array('https', null,  443,  'https', 8443, ''),
-            array('http',  null,  null, 'https', 8443, ''),
-            array('http',  8080,  4443, 'https', 8443, ':8080'),
-            array('http',  80,    4443, 'https', 8443, ''),
-        );
+            ['http',  null,  null, 'http',  8080, ':8080'],
+            ['http',  4080,  null, 'http',  8080, ':4080'],
+            ['http',  80,    null, 'http',  8080, ''],
+            ['https', null,  null, 'http',  8080, ''],
+            ['https', null,  8443, 'http',  8080, ':8443'],
+            ['https', null,  443,  'http',  8080, ''],
+
+            ['https', null,  null, 'https', 8443, ':8443'],
+            ['https', null,  4443, 'https', 8443, ':4443'],
+            ['https', null,  443,  'https', 8443, ''],
+            ['http',  null,  null, 'https', 8443, ''],
+            ['http',  8080,  4443, 'https', 8443, ':8080'],
+            ['http',  80,    4443, 'https', 8443, ''],
+        ];
     }
 
     /**
@@ -217,13 +217,13 @@ public function testUrlRedirect($scheme, $httpPort, $httpsPort, $requestScheme,
 
     public function pathQueryParamsProvider()
     {
-        return array(
-            array('http://www.example.com/base/redirect-path', '/redirect-path',  ''),
-            array('http://www.example.com/base/redirect-path?foo=bar', '/redirect-path?foo=bar',  ''),
-            array('http://www.example.com/base/redirect-path?foo=bar', '/redirect-path', 'foo=bar'),
-            array('http://www.example.com/base/redirect-path?foo=bar&abc=example', '/redirect-path?foo=bar', 'abc=example'),
-            array('http://www.example.com/base/redirect-path?foo=bar&abc=example&baz=def', '/redirect-path?foo=bar', 'abc=example&baz=def'),
-        );
+        return [
+            ['http://www.example.com/base/redirect-path', '/redirect-path',  ''],
+            ['http://www.example.com/base/redirect-path?foo=bar', '/redirect-path?foo=bar',  ''],
+            ['http://www.example.com/base/redirect-path?foo=bar', '/redirect-path', 'foo=bar'],
+            ['http://www.example.com/base/redirect-path?foo=bar&abc=example', '/redirect-path?foo=bar', 'abc=example'],
+            ['http://www.example.com/base/redirect-path?foo=bar&abc=example&baz=def', '/redirect-path?foo=bar', 'abc=example&baz=def'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddCacheWarmerPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddCacheWarmerPassTest.php
index 08eaaedffc93..341994e43d0a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddCacheWarmerPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddCacheWarmerPassTest.php
@@ -24,20 +24,20 @@ class AddCacheWarmerPassTest extends TestCase
     public function testThatCacheWarmersAreProcessedInPriorityOrder()
     {
         $container = new ContainerBuilder();
-        $cacheWarmerDefinition = $container->register('cache_warmer')->addArgument(array());
-        $container->register('my_cache_warmer_service1')->addTag('kernel.cache_warmer', array('priority' => 100));
-        $container->register('my_cache_warmer_service2')->addTag('kernel.cache_warmer', array('priority' => 200));
+        $cacheWarmerDefinition = $container->register('cache_warmer')->addArgument([]);
+        $container->register('my_cache_warmer_service1')->addTag('kernel.cache_warmer', ['priority' => 100]);
+        $container->register('my_cache_warmer_service2')->addTag('kernel.cache_warmer', ['priority' => 200]);
         $container->register('my_cache_warmer_service3')->addTag('kernel.cache_warmer');
 
         $addCacheWarmerPass = new AddCacheWarmerPass();
         $addCacheWarmerPass->process($container);
 
         $this->assertEquals(
-            array(
+            [
                 new Reference('my_cache_warmer_service2'),
                 new Reference('my_cache_warmer_service1'),
                 new Reference('my_cache_warmer_service3'),
-            ),
+            ],
             $cacheWarmerDefinition->getArgument(0)
         );
     }
@@ -56,11 +56,11 @@ public function testThatCompilerPassIsIgnoredIfThereIsNoCacheWarmerDefinition()
     public function testThatCacheWarmersMightBeNotDefined()
     {
         $container = new ContainerBuilder();
-        $cacheWarmerDefinition = $container->register('cache_warmer')->addArgument(array());
+        $cacheWarmerDefinition = $container->register('cache_warmer')->addArgument([]);
 
         $addCacheWarmerPass = new AddCacheWarmerPass();
         $addCacheWarmerPass->process($container);
 
-        $this->assertSame(array(), $cacheWarmerDefinition->getArgument(0));
+        $this->assertSame([], $cacheWarmerDefinition->getArgument(0));
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConsoleCommandPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConsoleCommandPassTest.php
index 58a0da41c3d9..17cbf62d0b5b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConsoleCommandPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConsoleCommandPassTest.php
@@ -53,15 +53,15 @@ public function testProcess($public)
         }
 
         $this->assertTrue($container->hasParameter('console.command.ids'));
-        $this->assertSame(array($alias => $id), $container->getParameter('console.command.ids'));
+        $this->assertSame([$alias => $id], $container->getParameter('console.command.ids'));
     }
 
     public function visibilityProvider()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConstraintValidatorsPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConstraintValidatorsPassTest.php
index a5291114dc6d..6fdf8a51ebd2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConstraintValidatorsPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConstraintValidatorsPassTest.php
@@ -28,21 +28,21 @@ public function testThatConstraintValidatorServicesAreProcessed()
     {
         $container = new ContainerBuilder();
         $validatorFactory = $container->register('validator.validator_factory')
-            ->addArgument(array());
+            ->addArgument([]);
 
         $container->register('my_constraint_validator_service1', Validator1::class)
-            ->addTag('validator.constraint_validator', array('alias' => 'my_constraint_valid
10000
ator_alias1'));
+            ->addTag('validator.constraint_validator', ['alias' => 'my_constraint_validator_alias1']);
         $container->register('my_constraint_validator_service2', Validator2::class)
             ->addTag('validator.constraint_validator');
 
         $addConstraintValidatorsPass = new AddConstraintValidatorsPass();
         $addConstraintValidatorsPass->process($container);
 
-        $expected = (new Definition(ServiceLocator::class, array(array(
+        $expected = (new Definition(ServiceLocator::class, [[
             Validator1::class => new ServiceClosureArgument(new Reference('my_constraint_validator_service1')),
             'my_constraint_validator_alias1' => new ServiceClosureArgument(new Reference('my_constraint_validator_service1')),
             Validator2::class => new ServiceClosureArgument(new Reference('my_constraint_validator_service2')),
-        ))))->addTag('container.service_locator')->setPublic(false);
+        ]]))->addTag('container.service_locator')->setPublic(false);
         $this->assertEquals($expected, $container->getDefinition((string) $validatorFactory->getArgument(0)));
     }
 
@@ -54,7 +54,7 @@ public function testAbstractConstraintValidator()
     {
         $container = new ContainerBuilder();
         $validatorFactory = $container->register('validator.validator_factory')
-            ->addArgument(array());
+            ->addArgument([]);
 
         $container->register('my_abstract_constraint_validator')
             ->setAbstract(true)
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CacheCollectorPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CacheCollectorPassTest.php
index 6a9438ecbd7c..992691de6f61 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CacheCollectorPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CacheCollectorPassTest.php
@@ -37,10 +37,10 @@ public function testProcess()
         $collector = $container->register('data_collector.cache', CacheDataCollector::class);
         (new CacheCollectorPass())->process($container);
 
-        $this->assertEquals(array(
-            array('addInstance', array('fs', new Reference('fs'))),
-            array('addInstance', array('tagged_fs', new Reference('tagged_fs'))),
-        ), $collector->getMethodCalls());
+        $this->assertEquals([
+            ['addInstance', ['fs', new Reference('fs')]],
+            ['addInstance', ['tagged_fs', new Reference('tagged_fs')]],
+        ], $collector->getMethodCalls());
 
         $this->assertSame(TraceableAdapter::class, $container->findDefinition('fs')->getClass());
         $this->assertSame(TraceableTagAwareAdapter::class, $container->getDefinition('tagged_fs')->getClass());
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolClearerPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolClearerPassTest.php
index 9230405d7560..728595ae9f2b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolClearerPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolClearerPassTest.php
@@ -36,13 +36,13 @@ public function testPoolRefsAreWeak()
 
         $publicPool = new Definition();
         $publicPool->addArgument('namespace');
-        $publicPool->addTag('cache.pool', array('clearer' => 'clearer_alias'));
+        $publicPool->addTag('cache.pool', ['clearer' => 'clearer_alias']);
         $container->setDefinition('public.pool', $publicPool);
 
         $privatePool = new Definition();
         $privatePool->setPublic(false);
         $privatePool->addArgument('namespace');
-        $privatePool->addTag('cache.pool', array('clearer' => 'clearer_alias'));
+        $privatePool->addTag('cache.pool', ['clearer' => 'clearer_alias']);
         $container->setDefinition('private.pool', $privatePool);
 
         $clearer = new Definition();
@@ -50,12 +50,12 @@ public function testPoolRefsAreWeak()
         $container->setAlias('clearer_alias', 'clearer');
 
         $pass = new RemoveUnusedDefinitionsPass();
-        $pass->setRepeatedPass(new RepeatedPass(array($pass)));
-        foreach (array(new CachePoolPass(), $pass, new CachePoolClearerPass()) as $pass) {
+        $pass->setRepeatedPass(new RepeatedPass([$pass]));
+        foreach ([new CachePoolPass(), $pass, new CachePoolClearerPass()] as $pass) {
             $pass->process($container);
         }
 
-        $this->assertEquals(array(array('public.pool' => new Reference('public.pool'))), $clearer->getArguments());
-        $this->assertEquals(array(array('public.pool' => new Reference('public.pool'))), $globalClearer->getArguments());
+        $this->assertEquals([['public.pool' => new Reference('public.pool')]], $clearer->getArguments());
+        $this->assertEquals([['public.pool' => new Reference('public.pool')]], $globalClearer->getArguments());
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPassTest.php
index 4619301b6e99..1e7dc416cb47 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPassTest.php
@@ -76,10 +76,10 @@ public function testArgsAreReplaced()
         $container->setParameter('kernel.environment', 'prod');
         $container->setParameter('cache.prefix.seed', 'foo');
         $cachePool = new Definition();
-        $cachePool->addTag('cache.pool', array(
+        $cachePool->addTag('cache.pool', [
             'provider' => 'foobar',
             'default_lifetime' => 3,
-        ));
+        ]);
         $cachePool->addArgument(null);
         $cachePool->addArgument(null);
         $cachePool->addArgument(null);
@@ -109,7 +109,7 @@ public function testThrowsExceptionWhenCachePoolTagHasUnknownAttributes()
         $adapter->addTag('cache.pool');
         $container->setDefinition('app.cache_adapter', $adapter);
         $cachePool = new ChildDefinition('app.cache_adapter');
-        $cachePool->addTag('cache.pool', array('foobar' => 123));
+        $cachePool->addTag('cache.pool', ['foobar' => 123]);
         $container->setDefinition('app.cache_pool', $cachePool);
 
         $this->cachePoolPass->process($container);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPrunerPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPrunerPassTest.php
index df9a49b428e7..2ef2e1535ed8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPrunerPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPrunerPassTest.php
@@ -24,17 +24,17 @@ class CachePoolPrunerPassTest extends TestCase
     public function testCompilerPassReplacesCommandArgument()
     {
         $container = new ContainerBuilder();
-        $container->register('console.command.cache_pool_prune')->addArgument(array());
+        $container->register('console.command.cache_pool_prune')->addArgument([]);
         $container->register('pool.foo', FilesystemAdapter::class)->addTag('cache.pool');
         $container->register('pool.bar', PhpFilesAdapter::class)->addTag('cache.pool');
 
         $pass = new CachePoolPrunerPass();
         $pass->process($container);
 
-        $expected = array(
+        $expected = [
             'pool.foo' => new Reference('pool.foo'),
             'pool.bar' => new Reference('pool.bar'),
-        );
+        ];
         $argument = $container->getDefinition('console.command.cache_pool_prune')->getArgument(0);
 
         $this->assertInstanceOf(IteratorArgument::class, $argument);
@@ -63,7 +63,7 @@ public function testCompilePassIsIgnoredIfCommandDoesNotExist()
     public function testCompilerPassThrowsOnInvalidDefinitionClass()
     {
         $container = new ContainerBuilder();
-        $container->register('console.command.cache_pool_prune')->addArgument(array());
+        $container->register('console.command.cache_pool_prune')->addArgument([]);
         $container->register('pool.not-found', NotFound::class)->addTag('cache.pool');
 
         $pass = new CachePoolPrunerPass();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ConfigCachePassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ConfigCachePassTest.php
index 482d8818b826..1b69a42831d6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ConfigCachePassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ConfigCachePassTest.php
@@ -27,18 +27,18 @@ public function testThatCheckersAreProcessedInPriorityOrder()
         $container = new ContainerBuilder();
 
         $definition = $container->register('config_cache_factory')->addArgument(null);
-        $container->register('checker_2')->addTag('config_cache.resource_checker', array('priority' => 100));
-        $container->register('checker_1')->addTag('config_cache.resource_checker', array('priority' => 200));
+        $container->register('checker_2')->addTag('config_cache.resource_checker', ['priority' => 100]);
+        $container->register('checker_1')->addTag('config_cache.resource_checker', ['priority' => 200]);
         $container->register('checker_3')->addTag('config_cache.resource_checker');
 
         $pass = new ConfigCachePass();
         $pass->process($container);
 
-        $expected = new IteratorArgument(array(
+        $expected = new IteratorArgument([
             new Reference('checker_1'),
             new Reference('checker_2'),
             new Reference('checker_3'),
-        ));
+        ]);
         $this->assertEquals($expected, $definition->getArgument(0));
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ControllerArgumentValueResolverPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ControllerArgumentValueResolverPassTest.php
index 1adfdf2734f0..06bdd15fb3ef 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ControllerArgumentValueResolverPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ControllerArgumentValueResolverPassTest.php
@@ -25,19 +25,19 @@ class ControllerArgumentValueResolverPassTest extends TestCase
 {
     public function testServicesAreOrderedAccordingToPriority()
     {
-        $services = array(
-            'n3' => array(array()),
-            'n1' => array(array('priority' => 200)),
-            'n2' => array(array('priority' => 100)),
-        );
+        $services = [
+            'n3' => [[]],
+            'n1' => [['priority' => 200]],
+            'n2' => [['priority' => 100]],
+        ];
 
-        $expected = array(
+        $expected = [
             new Reference('n1'),
             new Reference('n2'),
             new Reference('n3'),
-        );
+        ];
 
-        $definition = new Definition(ArgumentResolver::class, array(null, array()));
+        $definition = new Definition(ArgumentResolver::class, [null, []]);
         $container = new ContainerBuilder();
         $container->setDefinition('argument_resolver', $definition);
 
@@ -51,12 +51,12 @@ public function testServicesAreOrderedAccordingToPriority()
 
     public function testReturningEmptyArrayWhenNoService()
     {
-        $definition = new Definition(ArgumentResolver::class, array(null, array()));
+        $definition = new Definition(ArgumentResolver::class, [null, []]);
         $container = new ContainerBuilder();
         $container->setDefinition('argument_resolver', $definition);
 
         (new ControllerArgumentValueResolverPass())->process($container);
-        $this->assertEquals(array(), $definition->getArgument(1)->getValues());
+        $this->assertEquals([], $definition->getArgument(1)->getValues());
     }
 
     public function testNoArgumentResolver()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/DataCollectorTranslatorPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/DataCollectorTranslatorPassTest.php
index 2d6e8ca3be47..8748d1e9c730 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/DataCollectorTranslatorPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/DataCollectorTranslatorPassTest.php
@@ -33,11 +33,11 @@ protected function setUp()
         $this->container->register('translator.data_collector', 'Symfony\Component\Translation\DataCollectorTranslator')
             ->setPublic(false)
             ->setDecoratedService('translator')
-            ->setArguments(array(new Reference('translator.data_collector.inner')))
+            ->setArguments([new Reference('translator.data_collector.inner')])
         ;
 
         $this->container->register('data_collector.translation', 'Symfony\Component\Translation\DataCollector\TranslationDataCollector')
-            ->setArguments(array(new Reference('translator.data_collector')))
+            ->setArguments([new Reference('translator.data_collector')])
         ;
     }
 
@@ -67,10 +67,10 @@ public function testProcessKeepsDataCollectorIfTranslatorImplementsTranslatorBag
 
     public function getImplementingTranslatorBagInterfaceTranslatorClassNames()
     {
-        return array(
-            array('Symfony\Component\Translation\Translator'),
-            array('%translator_implementing_bag%'),
-        );
+        return [
+            ['Symfony\Component\Translation\Translator'],
+            ['%translator_implementing_bag%'],
+        ];
     }
 
     /**
@@ -99,20 +99,20 @@ public function testProcessRemovesDataCollectorIfTranslatorDoesNotImplementTrans
 
     public function getNotImplementingTranslatorBagInterfaceTranslatorClassNames()
     {
-        return array(
-            array('Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\Compiler\TranslatorWithTranslatorBag'),
-            array('%translator_not_implementing_bag%'),
-        );
+        return [
+            ['Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\Compiler\TranslatorWithTranslatorBag'],
+            ['%translator_not_implementing_bag%'],
+        ];
     }
 }
 
 class TranslatorWithTranslatorBag implements TranslatorInterface
 {
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
     }
 
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/FormPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/FormPassTest.php
index 58dbd2efd9c0..95423c2601b9 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/FormPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/FormPassTest.php
@@ -42,12 +42,12 @@ public function testAddTaggedTypes()
 
         $extDefinition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension');
         $extDefinition->setPublic(true);
-        $extDefinition->setArguments(array(
+        $extDefinition->setArguments([
             new Reference('service_container'),
-            array(),
-            array(),
-            array(),
-        ));
+            [],
+            [],
+            [],
+        ]);
 
         $container->setDefinition('form.extension', $extDefinition);
         $container->register('my.type1', __CLASS__.'_Type1')->addTag('form.type')->setPublic(true);
@@ -57,10 +57,10 @@ public function testAddTaggedTypes()
 
         $extDefinition = $container->getDefinition('form.extension');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             __CLASS__.'_Type1' => 'my.type1',
             __CLASS__.'_Type2' => 'my.type2',
-        ), $extDefinition->getArgument(1));
+        ], $extDefinition->getArgument(1));
     }
 
     /**
@@ -71,12 +71,12 @@ public function testAddTaggedTypeExtensions(array $extensions, array $expectedRe
         $container = new ContainerBuilder();
         $container->addCompilerPass(new FormPass());
 
-        $extDefinition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension', array(
+        $extDefinition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension', [
             new Reference('service_container'),
-            array(),
-            array(),
-            array(),
-        ));
+            [],
+            [],
+            [],
+        ]);
         $extDefinition->setPublic(true);
 
         $container->setDefinition('form.extension', $extDefinition);
@@ -96,33 +96,33 @@ public function testAddTaggedTypeExtensions(array $extensions, array $expectedRe
      */
     public function addTaggedTypeExtensionsDataProvider()
     {
-        return array(
-            array(
-                array(
-                    'my.type_extension1' => array('extended_type' => 'type1'),
-                    'my.type_extension2' => array('extended_type' => 'type1'),
-                    'my.type_extension3' => array('extended_type' => 'type2'),
-                ),
-                array(
-                    'type1' => array('my.type_extension1', 'my.type_extension2'),
-                    'type2' => array('my.type_extension3'),
-                ),
-            ),
-            array(
-                array(
-                    'my.type_extension1' => array('extended_type' => 'type1', 'priority' => 1),
-                    'my.type_extension2' => array('extended_type' => 'type1', 'priority' => 2),
-                    'my.type_extension3' => array('extended_type' => 'type1', 'priority' => -1),
-                    'my.type_extension4' => array('extended_type' => 'type2', 'priority' => 2),
-                    'my.type_extension5' => array('extended_type' => 'type2', 'priority' => 1),
-                    'my.type_extension6' => array('extended_type' => 'type2', 'priority' => 1),
-                ),
-                array(
-                    'type1' => array('my.type_extension2', 'my.type_extension1', 'my.type_extension3'),
-                    'type2' => array('my.type_extension4', 'my.type_extension5', 'my.type_extension6'),
-                ),
-            ),
-        );
+        return [
+            [
+                [
+                    'my.type_extension1' => ['extended_type' => 'type1'],
+                    'my.type_extension2' => ['extended_type' => 'type1'],
+                    'my.type_extension3' => ['extended_type' => 'type2'],
+                ],
+                [
+                    'type1' => ['my.type_extension1', 'my.type_extension2'],
+                    'type2' => ['my.type_extension3'],
+                ],
+            ],
+            [
+                [
+                    'my.type_extension1' => ['extended_type' => 'type1', 'priority' => 1],
+                    'my.type_extension2' => ['extended_type' => 'type1', 'priority' => 2],
+                    'my.type_extension3' => ['extended_type' => 'type1', 'priority' => -1],
+                    'my.type_extension4' => ['extended_type' => 'type2', 'priority' => 2],
+                    'my.type_extension5' => ['extended_type' => 'type2', 'priority' => 1],
+                    'my.type_extension6' => ['extended_type' => 'type2', 'priority' => 1],
+                ],
+                [
+                    'type1' => ['my.type_extension2', 'my.type_extension1', 'my.type_extension3'],
+                    'type2' => ['my.type_extension4', 'my.type_extension5', 'my.type_extension6'],
+                ],
+            ],
+        ];
     }
 
     /**
@@ -134,12 +134,12 @@ public function testAddTaggedFormTypeExtensionWithoutExtendedTypeAttribute()
         $container = new ContainerBuilder();
         $container->addCompilerPass(new FormPass());
 
-        $extDefinition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension', array(
+        $extDefinition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension', [
             new Reference('service_container'),
-            array(),
-            array(),
-            array(),
-        ));
+            [],
+            [],
+            [],
+        ]);
         $extDefinition->setPublic(true);
 
         $container->setDefinition('form.extension', $extDefinition);
@@ -156,12 +156,12 @@ public function testAddTaggedGuessers()
 
         $extDefinition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension');
         $extDefinition->setPublic(true);
-        $extDefinition->setArguments(array(
+        $extDefinition->setArguments([
             new Reference('service_container'),
-            array(),
-            array(),
-            array(),
-        ));
+            [],
+            [],
+            [],
+        ]);
 
         $definition1 = new Definition('stdClass');
         $definition1->addTag('form.type_guesser');
@@ -176,10 +176,10 @@ public function testAddTaggedGuessers()
 
         $extDefinition = $container->getDefinition('form.extension');
 
-        $this->assertSame(array(
+        $this->assertSame([
             'my.guesser1',
             'my.guesser2',
-        ), $extDefinition->getArgument(3));
+        ], $extDefinition->getArgument(3));
     }
 
     /**
@@ -191,15 +191,15 @@ public function testPrivateTaggedServices($id, $tagName)
         $container->addCompilerPass(new FormPass());
 
         $extDefinition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension');
-        $extDefinition->setArguments(array(
+        $extDefinition->setArguments([
             new Reference('service_container'),
-            array(),
-            array(),
-            array(),
-        ));
+            [],
+            [],
+            [],
+        ]);
 
         $container->setDefinition('form.extension', $extDefinition);
-        $container->register($id, 'stdClass')->setPublic(false)->addTag($tagName, array('extended_type' => 'Foo'));
+        $container->register($id, 'stdClass')->setPublic(false)->addTag($tagName, ['extended_type' => 'Foo']);
 
         $container->compile();
         $this->assertTrue($container->getDefinition($id)->isPublic());
@@ -207,11 +207,11 @@ public function testPrivateTaggedServices($id, $tagName)
 
     public function privateTaggedServicesProvider()
     {
-        return array(
-            array('my.type', 'form.type'),
-            array('my.type_extension', 'form.type_extension'),
-            array('my.guesser', 'form.type_guesser'),
-        );
+        return [
+            ['my.type', 'form.type'],
+            ['my.type_extension', 'form.type_extension'],
+            ['my.guesser', 'form.type_guesser'],
+        ];
     }
 }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/LoggingTranslatorPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/LoggingTranslatorPassTest.php
index 7788df0c7b4b..6838d47883d7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/LoggingTranslatorPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/LoggingTranslatorPassTest.php
@@ -30,17 +30,17 @@ public function testProcess()
         $container->setAlias('translator', 'translator.default');
         $translationWarmerDefinition = $container->register('translation.warmer')
             ->addArgument(new Reference('translator'))
-            ->addTag('container.service_subscriber', array('id' => 'translator'))
-            ->addTag('container.service_subscriber', array('id' => 'foo'));
+            ->addTag('container.service_subscriber', ['id' => 'translator'])
+            ->addTag('container.service_subscriber', ['id' => 'foo']);
 
         $pass = new LoggingTranslatorPass();
         $pass->process($container);
 
         $this->assertEquals(
-            array('container.service_subscriber' => array(
-                array('id' => 'foo'),
-                array('key' => 'translator', 'id' => 'translator.logging.inner'),
-            )),
+            ['container.service_subscriber' => [
+                ['id' => 'foo'],
+                ['key' => 'translator', 'id' => 'translator.logging.inner'],
+            ]],
             $translationWarmerDefinition->getTags()
         );
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ProfilerPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ProfilerPassTest.php
index f46779ada1c1..b693165f8b99 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ProfilerPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/ProfilerPassTest.php
@@ -32,7 +32,7 @@ public function testTemplateNoIdThrowsException()
         $builder = new ContainerBuilder();
         $builder->register('profiler', 'ProfilerClass');
         $builder->register('my_collector_service')
-            ->addTag('data_collector', array('template' => 'foo'));
+            ->addTag('data_collector', ['template' => 'foo']);
 
         $profilerPass = new ProfilerPass();
         $profilerPass->process($builder);
@@ -43,12 +43,12 @@ public function testValidCollector()
         $container = new ContainerBuilder();
         $profilerDefinition = $container->register('profiler', 'ProfilerClass');
         $container->register('my_collector_service')
-            ->addTag('data_collector', array('template' => 'foo', 'id' => 'my_collector'));
+            ->addTag('data_collector', ['template' => 'foo', 'id' => 'my_collector']);
 
         $profilerPass = new ProfilerPass();
         $profilerPass->process($container);
 
-        $this->assertSame(array('my_collector_service' => array('my_collector', 'foo')), $container->getParameter('data_collector.templates'));
+        $this->assertSame(['my_collector_service' => ['my_collector', 'foo']], $container->getParameter('data_collector.templates'));
 
         // grab the method calls off of the "profiler" definition
         $methodCalls = $profilerDefinition->getMethodCalls();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/PropertyInfoPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/PropertyInfoPassTest.php
index c7b2e3927b61..33fc9cc7f9f2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/PropertyInfoPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/PropertyInfoPassTest.php
@@ -29,44 +29,44 @@ public function testServicesAreOrderedAccordingToPriority($index, $tag)
     {
         $container = new ContainerBuilder();
 
-        $definition = $container->register('property_info')->setArguments(array(null, null, null, null));
-        $container->register('n2')->addTag($tag, array('priority' => 100));
-        $container->register('n1')->addTag($tag, array('priority' => 200));
+        $definition = $container->register('property_info')->setArguments([null, null, null, null]);
+        $container->register('n2')->addTag($tag, ['priority' => 100]);
+        $container->register('n1')->addTag($tag, ['priority' => 200]);
         $container->register('n3')->addTag($tag);
 
         $propertyInfoPass = new PropertyInfoPass();
         $propertyInfoPass->process($container);
 
-        $expected = new IteratorArgument(array(
+        $expected = new IteratorArgument([
             new Reference('n1'),
             new Reference('n2'),
             new Reference('n3'),
-        ));
+        ]);
         $this->assertEquals($expected, $definition->getArgument($index));
     }
 
     public function provideTags()
     {
-        return array(
-            array(0, 'property_info.list_extractor'),
-            array(1, 'property_info.type_extractor'),
-            array(2, 'property_info.description_extractor'),
-            array(3, 'property_info.access_extractor'),
-        );
+        return [
+            [0, 'property_info.list_extractor'],
+            [1, 'property_info.type_extractor'],
+            [2, 'property_info.description_extractor'],
+            [3, 'property_info.access_extractor'],
+        ];
     }
 
     public function testReturningEmptyArrayWhenNoService()
     {
         $container = new ContainerBuilder();
         $propertyInfoExtractorDefinition = $container->register('property_info')
-            ->setArguments(array(array(), array(), array(), array()));
+            ->setArguments([[], [], [], []]);
 
         $propertyInfoPass = new PropertyInfoPass();
         $propertyInfoPass->process($container);
 
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(0));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(1));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(2));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(3));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(0));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(1));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(2));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(3));
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/SerializerPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/SerializerPassTest.php
index d259f8190d10..e1a7b0be635d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/SerializerPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/SerializerPassTest.php
@@ -46,8 +46,8 @@ public function testThrowExceptionWhenNoEncoders()
     {
         $container = new ContainerBuilder();
         $container->register('serializer')
-            ->addArgument(array())
-            ->addArgument(array());
+            ->addArgument([])
+            ->addArgument([]);
         $container->register('normalizer')->addTag('serializer.normalizer');
 
         $serializerPass = new SerializerPass();
@@ -58,19 +58,19 @@ public function testServicesAreOrderedAccordingToPriority()
     {
         $container = new ContainerBuilder();
 
-        $definition = $container->register('serializer')->setArguments(array(null, null));
-        $container->register('n2')->addTag('serializer.normalizer', array('priority' => 100))->addTag('serializer.encoder', array('priority' => 100));
-        $container->register('n1')->addTag('serializer.normalizer', array('priority' => 200))->addTag('serializer.encoder', array('priority' => 200));
+        $definition = $container->register('serializer')->setArguments([null, null]);
+        $container->register('n2')->addTag('serializer.normalizer', ['priority' => 100])->addTag('serializer.encoder', ['priority' => 100]);
+        $container->register('n1')->addTag('serializer.normalizer', ['priority' => 200])->addTag('serializer.encoder', ['priority' => 200]);
         $container->register('n3')->addTag('serializer.normalizer')->addTag('serializer.encoder');
 
         $serializerPass = new SerializerPass();
         $serializerPass->process($container);
 
-        $expected = array(
+        $expected = [
             new Reference('n1'),
             new Reference('n2'),
             new Reference('n3'),
-        );
+        ];
         $this->assertEquals($expected, $definition->getArgument(0));
         $this->assertEquals($expected, $definition->getArgument(1));
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/TranslatorPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/TranslatorPassTest.php
index d31fb18a1286..e654edf6637a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/TranslatorPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/TranslatorPassTest.php
@@ -26,10 +26,10 @@ class TranslatorPassTest extends TestCase
     public function testValidCollector()
     {
         $loader = (new Definition())
-            ->addTag('translation.loader', array('alias' => 'xliff', 'legacy-alias' => 'xlf'));
+            ->addTag('translation.loader', ['alias' => 'xliff', 'legacy-alias' => 'xlf']);
 
         $translator = (new Definition())
-            ->setArguments(array(null, null, null, null));
+            ->setArguments([null, null, null, null]);
 
         $container = new ContainerBuilder();
         $container->setDefinition('translator.default', $translator);
@@ -39,15 +39,15 @@ public function testValidCollector()
         $pass->process($container);
 
         $expected = (new Definition())
-            ->addTag('translation.loader', array('alias' => 'xliff', 'legacy-alias' => 'xlf'))
-            ->addMethodCall('addLoader', array('xliff', new Reference('translation.loader')))
-            ->addMethodCall('addLoader', array('xlf', new Reference('translation.loader')))
+            ->addTag('translation.loader', ['alias' => 'xliff', 'legacy-alias' => 'xlf'])
+            ->addMethodCall('addLoader', ['xliff', new Reference('translation.loader')])
+            ->addMethodCall('addLoader', ['xlf', new Reference('translation.loader')])
         ;
         $this->assertEquals($expected, $loader);
 
-        $this->assertSame(array('translation.loader' => array('xliff', 'xlf')), $translator->getArgument(3));
+        $this->assertSame(['translation.loader' => ['xliff', 'xlf']], $translator->getArgument(3));
 
-        $expected = array('translation.loader' => new ServiceClosureArgument(new Reference('translation.loader')));
+        $expected = ['translation.loader' => new ServiceClosureArgument(new Reference('translation.loader'))];
         $this->assertEquals($expected, $container->getDefinition((string) $translator->getArgument(0))->getArgument(0));
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/UnusedTagsPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/UnusedTagsPassTest.php
index d91c806bc8c1..1377a6288249 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/UnusedTagsPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/UnusedTagsPassTest.php
@@ -29,6 +29,6 @@ public function testProcess()
 
         $pass->process($container);
 
-        $this->assertSame(array(sprintf('%s: Tag "kenrel.event_subscriber" was defined on service(s) "foo", "bar", but was never used. Did you mean "kernel.event_subscriber"?', UnusedTagsPass::class)), $container->getCompiler()->getLog());
+        $this->assertSame([sprintf('%s: Tag "kenrel.event_subscriber" was defined on service(s) "foo", "bar", but was never used. Did you mean "kernel.event_subscriber"?', UnusedTagsPass::class)], $container->getCompiler()->getLog());
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
index d3317809aafc..1be4015713dc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -23,25 +23,25 @@ class ConfigurationTest extends TestCase
     public function testDefaultConfig()
     {
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(true), array(array('secret' => 's3cr3t')));
+        $config = $processor->processConfiguration(new Configuration(true), [['secret' => 's3cr3t']]);
 
         $this->assertEquals(
-            array_merge(array('secret' => 's3cr3t', 'trusted_hosts' => array()), self::getBundleDefaultConfig()),
+            array_merge(['secret' => 's3cr3t', 'trusted_hosts' => []], self::getBundleDefaultConfig()),
             $config
         );
     }
 
     public function testDoNoDuplicateDefaultFormResources()
     {
-        $input = array('templating' => array(
-            'form' => array('resources' => array('FrameworkBundle:Form')),
-            'engines' => array('php'),
-        ));
+        $input = ['templating' => [
+            'form' => ['resources' => ['FrameworkBundle:Form']],
+            'engines' => ['php'],
+        ]];
 
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(true), array($input));
+        $config = $processor->processConfiguration(new Configuration(true), [$input]);
 
-        $this->assertEquals(array('FrameworkBundle:Form'), $config['templating']['form']['resources']);
+        $this->assertEquals(['FrameworkBundle:Form'], $config['templating']['form']['resources']);
     }
 
     /**
@@ -52,7 +52,7 @@ public function testTrustedProxiesSetToNullIsDeprecated()
     {
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $processor->processConfiguration($configuration, array(array('trusted_proxies' => null)));
+        $processor->processConfiguration($configuration, [['trusted_proxies' => null]]);
     }
 
     /**
@@ -63,7 +63,7 @@ public function testTrustedProxiesSetToEmptyArrayIsDeprecated()
     {
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $processor->processConfiguration($configuration, array(array('trusted_proxies' => array())));
+        $processor->processConfiguration($configuration, [['trusted_proxies' => []]]);
     }
 
     /**
@@ -74,7 +74,7 @@ public function testTrustedProxiesSetToNonEmptyArrayIsInvalid()
     {
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $processor->processConfiguration($configuration, array(array('trusted_proxies' => array('127.0.0.1'))));
+        $processor->processConfiguration($configuration, [['trusted_proxies' => ['127.0.0.1']]]);
     }
 
     /**
@@ -86,7 +86,7 @@ public function testValidSessionName($sessionName)
         $processor = new Processor();
         $config = $processor->processConfiguration(
             new Configuration(true),
-            array(array('session' => array('name' => $sessionName)))
+            [['session' => ['name' => $sessionName]]]
         );
 
         $this->assertEquals($sessionName, $config['session']['name']);
@@ -94,12 +94,12 @@ public function testValidSessionName($sessionName)
 
     public function getTestValidSessionName()
     {
-        return array(
-            array(null),
-            array('PHPSESSID'),
-            array('a&b'),
-            array(',_-!@#$%^*(){}:<>/?'),
-        );
+        return [
+            [null],
+            ['PHPSESSID'],
+            ['a&b'],
+            [',_-!@#$%^*(){}:<>/?'],
+        ];
     }
 
     /**
@@ -111,20 +111,20 @@ public function testInvalidSessionName($sessionName)
         $processor = new Processor();
         $processor->processConfiguration(
             new Configuration(true),
-            array(array('session' => array('name' => $sessionName)))
+            [['session' => ['name' => $sessionName]]]
         );
     }
 
     public function getTestInvalidSessionName()
     {
-        return array(
-            array('a.b'),
-            array('a['),
-            array('a[]'),
-            array('a[b]'),
-            array('a=b'),
-            array('a+b'),
-        );
+        return [
+            ['a.b'],
+            ['a['],
+            ['a[]'],
+            ['a[b]'],
+            ['a=b'],
+            ['a+b'],
+        ];
     }
 
     /**
@@ -135,27 +135,27 @@ public function testValidTrustedProxies($trustedProxies, $processedProxies)
     {
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $config = $processor->processConfiguration($configuration, array(array(
+        $config = $processor->processConfiguration($configuration, [[
             'secret' => 's3cr3t',
             'trusted_proxies' => $trustedProxies,
-        )));
+        ]]);
 
         $this->assertEquals($processedProxies, $config['trusted_proxies']);
     }
 
     public function getTestValidTrustedProxiesData()
     {
-        return array(
-            array(array('127.0.0.1'), array('127.0.0.1')),
-            array(array('::1'), array('::1')),
-            array(array('127.0.0.1', '::1'), array('127.0.0.1', '::1')),
-            array(null, array()),
-            array(false, array()),
-            array(array(), array()),
-            array(array('10.0.0.0/8'), array('10.0.0.0/8')),
-            array(array('::ffff:0:0/96'), array('::ffff:0:0/96')),
-            array(array('0.0.0.0/0'), array('0.0.0.0/0')),
-        );
+        return [
+            [['127.0.0.1'], ['127.0.0.1']],
+            [['::1'], ['::1']],
+            [['127.0.0.1', '::1'], ['127.0.0.1', '::1']],
+            [null, []],
+            [false, []],
+            [[], []],
+            [['10.0.0.0/8'], ['10.0.0.0/8']],
+            [['::ffff:0:0/96'], ['::ffff:0:0/96']],
+            [['0.0.0.0/0'], ['0.0.0.0/0']],
+        ];
     }
 
     /**
@@ -166,12 +166,12 @@ public function testInvalidTypeTrustedProxies()
     {
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $processor->processConfiguration($configuration, array(
-            array(
+        $processor->processConfiguration($configuration, [
+            [
                 'secret' => 's3cr3t',
                 'trusted_proxies' => 'Not an IP address',
-            ),
-        ));
+            ],
+        ]);
     }
 
     /**
@@ -183,30 +183,30 @@ public function testInvalidValueTrustedProxies()
         $processor = new Processor();
         $configuration = new Configuration(true);
 
-        $processor->processConfiguration($configuration, array(
-            array(
+        $processor->processConfiguration($configuration, [
+            [
                 'secret' => 's3cr3t',
-                'trusted_proxies' => array('Not an IP address'),
-            ),
-        ));
+                'trusted_proxies' => ['Not an IP address'],
+            ],
+        ]);
     }
 
     public function testAssetsCanBeEnabled()
     {
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $config = $processor->processConfiguration($configuration, array(array('assets' => null)));
+        $config = $processor->processConfiguration($configuration, [['assets' => null]]);
 
-        $defaultConfig = array(
+        $defaultConfig = [
             'enabled' => true,
             'version_strategy' => null,
             'version' => null,
             'version_format' => '%%s?%%s',
             'base_path' => '',
-            'base_urls' => array(),
-            'packages' => array(),
+            'base_urls' => [],
+            'packages' => [],
             'json_manifest_path' => null,
-        );
+        ];
 
         $this->assertEquals($defaultConfig, $config['assets']);
     }
@@ -225,125 +225,125 @@ public function testInvalidAssetsConfiguration(array $assetConfig, $expectedMess
 
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $processor->processConfiguration($configuration, array(
-                array(
+        $processor->processConfiguration($configuration, [
+                [
                     'assets' => $assetConfig,
-                ),
-            ));
+                ],
+            ]);
     }
 
     public function provideInvalidAssetConfigurationTests()
     {
         // helper to turn config into embedded package config
         $createPackageConfig = function (array $packageConfig) {
-            return array(
+            return [
                 'base_urls' => '//example.com',
                 'version' => 1,
-                'packages' => array(
+                'packages' => [
                     'foo' => $packageConfig,
-                ),
-            );
+                ],
+            ];
         };
 
-        $config = array(
+        $config = [
             'version' => 1,
             'version_strategy' => 'foo',
-        );
-        yield array($config, 'You cannot use both "version_strategy" and "version" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version_strategy" and "version" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version_strategy" and "version" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version_strategy" and "version" at the same time under "assets" packages.'];
 
-        $config = array(
+        $config = [
             'json_manifest_path' => '/foo.json',
             'version_strategy' => 'foo',
-        );
-        yield array($config, 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets" packages.'];
 
-        $config = array(
+        $config = [
             'json_manifest_path' => '/foo.json',
             'version' => '1',
-        );
-        yield array($config, 'You cannot use both "version" and "json_manifest_path" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version" and "json_manifest_path" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version" and "json_manifest_path" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version" and "json_manifest_path" at the same time under "assets" packages.'];
     }
 
     protected static function getBundleDefaultConfig()
     {
-        return array(
+        return [
             'http_method_override' => true,
-            'trusted_proxies' => array(),
+            'trusted_proxies' => [],
             'ide' => null,
             'default_locale' => 'en',
-            'csrf_protection' => array(
+            'csrf_protection' => [
                 'enabled' => false,
-            ),
-            'form' => array(
+            ],
+            'form' => [
                 'enabled' => !class_exists(FullStack::class),
-                'csrf_protection' => array(
+                'csrf_protection' => [
                     'enabled' => null, // defaults to csrf_protection.enabled
                     'field_name' => '_token',
-                ),
-            ),
-            'esi' => array('enabled' => false),
-            'ssi' => array('enabled' => false),
-            'fragments' => array(
+                ],
+            ],
+            'esi' => ['enabled' => false],
+            'ssi' => ['enabled' => false],
+            'fragments' => [
                 'enabled' => false,
                 'path' => '/_fragment',
-            ),
-            'profiler' => array(
+            ],
+            'profiler' => [
                 'enabled' => false,
                 'only_exceptions' => false,
                 'only_master_requests' => false,
                 'dsn' => 'file:%kernel.cache_dir%/profiler',
                 'collect' => true,
-                'matcher' => array(
+                'matcher' => [
                     'enabled' => false,
-                    'ips' => array(),
-                ),
-            ),
-            'translator' => array(
+                    'ips' => [],
+                ],
+            ],
+            'translator' => [
                 'enabled' => !class_exists(FullStack::class),
-                'fallbacks' => array('en'),
+                'fallbacks' => ['en'],
                 'logging' => true,
                 'formatter' => 'translator.formatter.default',
-                'paths' => array(),
+                'paths' => [],
                 'default_path' => '%kernel.project_dir%/translations',
-            ),
-            'validation' => array(
+            ],
+            'validation' => [
                 'enabled' => !class_exists(FullStack::class),
                 'enable_annotations' => !class_exists(FullStack::class),
-                'static_method' => array('loadValidatorMetadata'),
+                'static_method' => ['loadValidatorMetadata'],
                 'translation_domain' => 'validators',
                 'strict_email' => false,
-                'mapping' => array(
-                    'paths' => array(),
-                ),
-            ),
-            'annotations' => array(
+                'mapping' => [
+                    'paths' => [],
+                ],
+            ],
+            'annotations' => [
                 'cache' => 'php_array',
                 'file_cache_dir' => '%kernel.cache_dir%/annotations',
                 'debug' => true,
                 'enabled' => true,
-            ),
-            'serializer' => array(
+            ],
+            'serializer' => [
                 'enabled' => !class_exists(FullStack::class),
                 'enable_annotations' => !class_exists(FullStack::class),
-                'mapping' => array('paths' => array()),
-            ),
-            'property_access' => array(
+                'mapping' => ['paths' => []],
+            ],
+            'property_access' => [
                 'magic_call' => false,
                 'throw_exception_on_invalid_index' => false,
-            ),
-            'property_info' => array(
+            ],
+            'property_info' => [
                 'enabled' => !class_exists(FullStack::class),
-            ),
-            'router' => array(
+            ],
+            'router' => [
                 'enabled' => false,
                 'http_port' => 80,
                 'https_port' => 443,
                 'strict_requirements' => true,
-            ),
-            'session' => array(
+            ],
+            'session' => [
                 'enabled' => false,
                 'storage_id' => 'session.storage.native',
                 'handler_id' => 'session.handler.native_file',
@@ -352,57 +352,57 @@ protected static function getBundleDefaultConfig()
                 'save_path' => '%kernel.cache_dir%/sessions',
                 'metadata_update_threshold' => '0',
                 'use_strict_mode' => true,
-            ),
-            'request' => array(
+            ],
+            'request' => [
                 'enabled' => false,
-                'formats' => array(),
-            ),
-            'templating' => array(
+                'formats' => [],
+            ],
+            'templating' => [
                 'enabled' => false,
                 'hinclude_default_template' => null,
-                'form' => array(
-                    'resources' => array('FrameworkBundle:Form'),
-                ),
-                'engines' => array(),
-                'loaders' => array(),
-            ),
-            'assets' => array(
+                'form' => [
+                    'resources' => ['FrameworkBundle:Form'],
+                ],
+                'engines' => [],
+                'loaders' => [],
+            ],
+            'assets' => [
                 'enabled' => !class_exists(FullStack::class),
                 'version_strategy' => null,
                 'version' => null,
                 'version_format' => '%%s?%%s',
                 'base_path' => '',
-                'base_urls' => array(),
-                'packages' => array(),
+                'base_urls' => [],
+                'packages' => [],
                 'json_manifest_path' => null,
-            ),
-            'cache' => array(
-                'pools' => array(),
+            ],
+            'cache' => [
+                'pools' => [],
                 'app' => 'cache.adapter.filesystem',
                 'system' => 'cache.adapter.system',
                 'directory' => '%kernel.cache_dir%/pools',
                 'default_redis_provider' => 'redis://localhost',
                 'default_memcached_provider' => 'memcached://localhost',
-            ),
-            'workflows' => array(
+            ],
+            'workflows' => [
                 'enabled' => false,
-                'workflows' => array(),
-            ),
-            'php_errors' => array(
+                'workflows' => [],
+            ],
+            'php_errors' => [
                 'log' => true,
                 'throw' => true,
-            ),
-            'web_link' => array(
+            ],
+            'web_link' => [
                 'enabled' => !class_exists(FullStack::class),
-            ),
-            'lock' => array(
+            ],
+            'lock' => [
                 'enabled' => !class_exists(FullStack::class),
-                'resources' => array(
-                    'default' => array(
+                'resources' => [
+                    'default' => [
                         class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock',
-                    ),
-                ),
-            ),
-        );
+                    ],
+                ],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets.php
index dc6bf7bb8df5..c05c6fe3a1c8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets.php
@@ -1,32 +1,32 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'assets' => array(
+$container->loadFromExtension('framework', [
+    'assets' => [
         'version' => 'SomeVersionScheme',
         'base_urls' => 'http://cdn.example.com',
         'version_format' => '%%s?version=%%s',
-        'packages' => array(
-            'images_path' => array(
+        'packages' => [
+            'images_path' => [
                 'base_path' => '/foo',
-            ),
-            'images' => array(
+            ],
+            'images' => [
                 'version' => '1.0.0',
-                'base_urls' => array('http://images1.example.com', 'http://images2.example.com'),
-            ),
-            'foo' => array(
+                'base_urls' => ['http://images1.example.com', 'http://images2.example.com'],
+            ],
+            'foo' => [
                 'version' => '1.0.0',
                 'version_format' => '%%s-%%s',
-            ),
-            'bar' => array(
-                'base_urls' => array('https://bar2.example.com'),
-            ),
-            'bar_version_strategy' => array(
-                'base_urls' => array('https://bar2.example.com'),
+            ],
+            'bar' => [
+                'base_urls' => ['https://bar2.example.com'],
+            ],
+            'bar_version_strategy' => [
+                'base_urls' => ['https://bar2.example.com'],
                 'version_strategy' => 'assets.custom_version_strategy',
-            ),
-            'json_manifest_strategy' => array(
+            ],
+            'json_manifest_strategy' => [
                 'json_manifest_path' => '/path/to/manifest.json',
-            ),
-        ),
-    ),
-));
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_disabled.php
index 3ade7047a100..d10595fba9df 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_disabled.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'assets' => array(
+$container->loadFromExtension('framework', [
+    'assets' => [
         'enabled' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_version_strategy_as_service.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_version_strategy_as_service.php
index 4f9123aefb0f..b57f78ba47bb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_version_strategy_as_service.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_version_strategy_as_service.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'assets' => array(
+$container->loadFromExtension('framework', [
+    'assets' => [
         'version_strategy' => 'assets.custom_version_strategy',
         'base_urls' => 'http://cdn.example.com',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/cache.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/cache.php
index ef7a1be19046..2a85f849fa88 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/cache.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/cache.php
@@ -1,29 +1,29 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'cache' => array(
-        'pools' => array(
-            'cache.foo' => array(
+$container->loadFromExtension('framework', [
+    'cache' => [
+        'pools' => [
+            'cache.foo' => [
                 'adapter' => 'cache.adapter.apcu',
                 'default_lifetime' => 30,
-            ),
-            'cache.bar' => array(
+            ],
+            'cache.bar' => [
                 'adapter' => 'cache.adapter.doctrine',
                 'default_lifetime' => 5,
                 'provider' => 'app.doctrine_cache_provider',
-            ),
-            'cache.baz' => array(
+            ],
+            'cache.baz' => [
                 'adapter' => 'cache.adapter.filesystem',
                 'default_lifetime' => 7,
-            ),
-            'cache.foobar' => array(
+            ],
+            'cache.foobar' => [
                 'adapter' => 'cache.adapter.psr6',
                 'default_lifetime' => 10,
                 'provider' => 'app.cache_pool',
-            ),
-            'cache.def' => array(
+            ],
+            'cache.def' => [
                 'default_lifetime' => 11,
-            ),
-        ),
-    ),
-));
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/cache_env_var.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/cache_env_var.php
index b93ade8f4c81..4f819e7204d7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/cache_env_var.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/cache_env_var.php
@@ -2,8 +2,8 @@
 
 $container->setParameter('env(REDIS_URL)', 'redis://paas.com');
 
-$container->loadFromExtension('framework', array(
-    'cache' => array(
+$container->loadFromExtension('framework', [
+    'cache' => [
         'default_redis_provider' => '%env(REDIS_URL)%',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/csrf.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/csrf.php
index 497ceb2b6e3c..886cb657b2dc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/csrf.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/csrf.php
@@ -1,9 +1,9 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'csrf_protection' => true,
     'form' => true,
-    'session' => array(
+    'session' => [
         'handler_id' => null,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/csrf_needs_session.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/csrf_needs_session.php
index d1df1c596233..34fdb4c1f993 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/csrf_needs_session.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/csrf_needs_session.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'csrf_protection' => array(
+$container->loadFromExtension('framework', [
+    'csrf_protection' => [
         'enabled' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/default_config.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/default_config.php
index cd2e56bddf14..4b2021df7bb2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/default_config.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/default_config.php
@@ -1,3 +1,3 @@
 <?php
 
-$container->loadFromExtension('framework', array());
+$container->loadFromExtension('framework', []);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/esi_and_ssi_without_fragments.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/esi_and_ssi_without_fragments.php
index b8f3aa0441ac..beada36b8435 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/esi_and_ssi_without_fragments.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/esi_and_ssi_without_fragments.php
@@ -1,13 +1,13 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'fragments' => array(
+$container->loadFromExtension('framework', [
+    'fragments' => [
         'enabled' => false,
-    ),
-    'esi' => array(
+    ],
+    'esi' => [
         'enabled' => true,
-    ),
-    'ssi' => array(
+    ],
+    'ssi' => [
         'enabled' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/esi_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/esi_disabled.php
index 1fb5936fdec1..a24cd8158c6b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/esi_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/esi_disabled.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'esi' => array(
+$container->loadFromExtension('framework', [
+    'esi' => [
         'enabled' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/form_no_csrf.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/form_no_csrf.php
index 7360c49c72ef..e0befdb32061 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/form_no_csrf.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/form_no_csrf.php
@@ -1,9 +1,9 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'form' => array(
-        'csrf_protection' => array(
+$container->loadFromExtension('framework', [
+    'form' => [
+        'csrf_protection' => [
             'enabled' => false,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php
index 64de9309e80c..e3b9014e4cd0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php
+++ b/src/Symfony/Bundle/Fr
10000
ameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php
@@ -1,30 +1,30 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'secret' => 's3cr3t',
     'default_locale' => 'fr',
     'csrf_protection' => true,
-    'form' => array(
-        'csrf_protection' => array(
+    'form' => [
+        'csrf_protection' => [
             'field_name' => '_csrf',
-        ),
-    ),
+        ],
+    ],
     'http_method_override' => false,
-    'esi' => array(
+    'esi' => [
         'enabled' => true,
-    ),
-    'ssi' => array(
+    ],
+    'ssi' => [
         'enabled' => true,
-    ),
-    'profiler' => array(
+    ],
+    'profiler' => [
         'only_exceptions' => true,
         'enabled' => false,
-    ),
-    'router' => array(
+    ],
+    'router' => [
         'resource' => '%kernel.project_dir%/config/routing.xml',
         'type' => 'xml',
-    ),
-    'session' => array(
+    ],
+    'session' => [
         'storage_id' => 'session.storage.native',
         'handler_id' => 'session.handler.native_file',
         'name' => '_SYMFONY',
@@ -38,47 +38,47 @@
         'gc_divisor' => 108,
         'gc_probability' => 1,
         'save_path' => '/path/to/sessions',
-    ),
-    'templating' => array(
+    ],
+    'templating' => [
         'cache' => '/path/to/cache',
-        'engines' => array('php', 'twig'),
-        'loader' => array('loader.foo', 'loader.bar'),
-        'form' => array(
-            'resources' => array('theme1', 'theme2'),
-        ),
+        'engines' => ['php', 'twig'],
+        'loader' => ['loader.foo', 'loader.bar'],
+        'form' => [
+            'resources' => ['theme1', 'theme2'],
+        ],
         'hinclude_default_template' => 'global_hinclude_template',
-    ),
-    'assets' => array(
+    ],
+    'assets' => [
         'version' => 'v1',
-    ),
-    'translator' => array(
+    ],
+    'translator' => [
         'enabled' => true,
         'fallback' => 'fr',
-        'paths' => array('%kernel.project_dir%/Fixtures/translations'),
-    ),
-    'validation' => array(
+        'paths' => ['%kernel.project_dir%/Fixtures/translations'],
+    ],
+    'validation' => [
         'enabled' => true,
-    ),
-    'annotations' => array(
+    ],
+    'annotations' => [
         'cache' => 'file',
         'debug' => true,
         'file_cache_dir' => '%kernel.cache_dir%/annotations',
-    ),
-    'serializer' => array(
+    ],
+    'serializer' => [
         'enabled' => true,
         'enable_annotations' => true,
         'name_converter' => 'serializer.name_converter.camel_case_to_snake_case',
         'circular_reference_handler' => 'my.circular.reference.handler',
-    ),
+    ],
     'property_info' => true,
     'ide' => 'file%%link%%format',
-    'request' => array(
-        'formats' => array(
-            'csv' => array(
+    'request' => [
+        'formats' => [
+            'csv' => [
                 'text/csv',
                 'text/plain',
-            ),
+            ],
             'pdf' => 'application/pdf',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_disabled.php
index 1338ec55107e..cff0582bf3b3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_disabled.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'php_errors' => array(
+$container->loadFromExtension('framework', [
+    'php_errors' => [
         'log' => false,
         'throw' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_enabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_enabled.php
index a33875ec6a7a..9afa5d1c0226 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_enabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_enabled.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'php_errors' => array(
+$container->loadFromExtension('framework', [
+    'php_errors' => [
         'log' => true,
         'throw' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/profiler.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/profiler.php
index 6615aa74ce55..552c95e137bb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/profiler.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/profiler.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'profiler' => array(
+$container->loadFromExtension('framework', [
+    'profiler' => [
         'enabled' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/property_accessor.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/property_accessor.php
index 4340e61fc096..b5b060c1baa4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/property_accessor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/property_accessor.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'property_access' => array(
+$container->loadFromExtension('framework', [
+    'property_access' => [
         'magic_call' => true,
         'throw_exception_on_invalid_index' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/property_info.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/property_info.php
index 847e15fa194f..bff8d4115858 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/property_info.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/property_info.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'property_info' => array(
+$container->loadFromExtension('framework', [
+    'property_info' => [
         'enabled' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/request.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/request.php
index 1e7cb2921c4c..d69d7512ad99 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/request.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/request.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'request' => array(
-        'formats' => array(),
-    ),
-));
+$container->loadFromExtension('framework', [
+    'request' => [
+        'formats' => [],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
index dedd090beb77..937a07c2255c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'serializer' => array(
+$container->loadFromExtension('framework', [
+    'serializer' => [
         'enabled' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_enabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_enabled.php
index eadad57ec718..de3381c21e3a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_enabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_enabled.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'serializer' => array(
+$container->loadFromExtension('framework', [
+    'serializer' => [
         'enabled' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_legacy_cache.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_legacy_cache.php
index 65ddd321548a..9636b1d6613a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_legacy_cache.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_legacy_cache.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'serializer' => array(
+$container->loadFromExtension('framework', [
+    'serializer' => [
         'enabled' => true,
         'cache' => 'foo',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_mapping.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_mapping.php
index f2b928ff2d69..2f6f48e95888 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_mapping.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_mapping.php
@@ -1,15 +1,15 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'annotations' => array('enabled' => true),
-    'serializer' => array(
+$container->loadFromExtension('framework', [
+    'annotations' => ['enabled' => true],
+    'serializer' => [
         'enable_annotations' => true,
-        'mapping' => array(
-            'paths' => array(
+        'mapping' => [
+            'paths' => [
                 '%kernel.project_dir%/Fixtures/TestBundle/Resources/config/serializer_mapping/files',
                 '%kernel.project_dir%/Fixtures/TestBundle/Resources/config/serializer_mapping/serialization.yml',
                 '%kernel.project_dir%/Fixtures/TestBundle/Resources/config/serializer_mapping/serialization.yaml',
-            ),
-        ),
-    ),
-));
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/session.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/session.php
index 104183764a4d..375008c7db46 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/session.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/session.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'session' => array(
+$container->loadFromExtension('framework', [
+    'session' => [
         'handler_id' => null,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/ssi_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/ssi_disabled.php
index 4d61d821660f..32e1bf0c554d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/ssi_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/ssi_disabled.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'ssi' => array(
+$container->loadFromExtension('framework', [
+    'ssi' => [
         'enabled' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_disabled.php
index f76d8ad35177..2d5e6d779f79 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_disabled.php
@@ -1,5 +1,5 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'templating' => false,
-));
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_no_assets.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_no_assets.php
index bf12a8bc47e5..f4d5a28aafc6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_no_assets.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_no_assets.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'templating' => array(
-        'engines' => array('php', 'twig'),
-    ),
-));
+$container->loadFromExtension('framework', [
+    'templating' => [
+        'engines' => ['php', 'twig'],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_assets_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_assets_disabled.php
index 535a9a2e99c9..851a7e140c74 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_assets_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_assets_disabled.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'assets' => false,
-    'templating' => array(
-        'engines' => array('php'),
-    ),
-));
+    'templating' => [
+        'engines' => ['php'],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_translator_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_translator_disabled.php
index 4fb2aec557f6..1d65c0caa48b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_translator_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_translator_disabled.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'translator' => false,
-    'templating' => array(
-        'engines' => array('php'),
-    ),
-));
+    'templating' => [
+        'engines' => ['php'],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_translator_enabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_translator_enabled.php
index b8053c853b12..2d4710ba30ec 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_translator_enabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/templating_php_translator_enabled.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'translator' => true,
-    'templating' => array(
-        'engines' => array('php'),
-    ),
-));
+    'templating' => [
+        'engines' => ['php'],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/translator_fallbacks.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/translator_fallbacks.php
index 0abe3a46abbd..592a61de65a7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/translator_fallbacks.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/translator_fallbacks.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'translator' => array(
-        'fallbacks' => array('en', 'fr'),
-    ),
-));
+$container->loadFromExtension('framework', [
+    'translator' => [
+        'fallbacks' => ['en', 'fr'],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_annotations.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_annotations.php
index 35a0b3d39e4f..dff03e398e2d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_annotations.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_annotations.php
@@ -1,9 +1,9 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'secret' => 's3cr3t',
-    'validation' => array(
+    'validation' => [
         'enabled' => true,
         'enable_annotations' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_mapping.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_mapping.php
index 5d44c6c215a1..f8b19e34801c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_mapping.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_mapping.php
@@ -1,13 +1,13 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'validation' => array(
-        'mapping' => array(
-            'paths' => array(
+$container->loadFromExtension('framework', [
+    'validation' => [
+        'mapping' => [
+            'paths' => [
                 '%kernel.project_dir%/Fixtures/TestBundle/Resources/config/validation_mapping/files',
                 '%kernel.project_dir%/Fixtures/TestBundle/Resources/config/validation_mapping/validation.yml',
                 '%kernel.project_dir%/Fixtures/TestBundle/Resources/config/validation_mapping/validation.yaml',
-            ),
-        ),
-    ),
-));
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_multiple_static_methods.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_multiple_static_methods.php
index 476da7948e16..ad2bd817a208 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_multiple_static_methods.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_multiple_static_methods.php
@@ -1,9 +1,9 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'secret' => 's3cr3t',
-    'validation' => array(
+    'validation' => [
         'enabled' => true,
-        'static_method' => array('loadFoo', 'loadBar'),
-    ),
-));
+        'static_method' => ['loadFoo', 'loadBar'],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_no_static_method.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_no_static_method.php
index b428e06f5c3c..a9d98e17c68d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_no_static_method.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_no_static_method.php
@@ -1,9 +1,9 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'secret' => 's3cr3t',
-    'validation' => array(
+    'validation' => [
         'enabled' => true,
         'static_method' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email.php
index 64a47a232204..caa47d74700f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'validation' => array(
+$container->loadFromExtension('framework', [
+    'validation' => [
         'strict_email' => true,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_translation_domain.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_translation_domain.php
index 40a81d4936ce..42ea0713030a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_translation_domain.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_translation_domain.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'validation' => array(
+$container->loadFromExtension('framework', [
+    'validation' => [
         'translation_domain' => 'messages',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/web_link.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/web_link.php
index 990064cca934..44d52e402d8b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/web_link.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/web_link.php
@@ -1,5 +1,5 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'web_link' => array('enabled' => true),
-));
+$container->loadFromExtension('framework', [
+    'web_link' => ['enabled' => true],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_arguments_and_service.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_arguments_and_service.php
index d97f9700a0f1..003b99f21097 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_arguments_and_service.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_arguments_and_service.php
@@ -2,30 +2,30 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'my_workflow' => array(
-            'marking_store' => array(
-                'arguments' => array('a', 'b'),
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'my_workflow' => [
+            'marking_store' => [
+                'arguments' => ['a', 'b'],
                 'service' => 'workflow_service',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
-            'places' => array(
+            ],
+            'places' => [
                 'first',
                 'last',
-            ),
-            'transitions' => array(
-                'go' => array(
-                    'from' => array(
+            ],
+            'transitions' => [
+                'go' => [
+                    'from' => [
                         'first',
-                    ),
-                    'to' => array(
+                    ],
+                    'to' => [
                         'last',
-                    ),
-                ),
-            ),
-        ),
-    ),
-));
+                    ],
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_guard_expression.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_guard_expression.php
index 89c86339afe1..19de6363e62c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_guard_expression.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_guard_expression.php
@@ -2,50 +2,50 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'article' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'article' => [
             'type' => 'workflow',
-            'marking_store' => array(
+            'marking_store' => [
                 'type' => 'multiple_state',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
+            ],
             'initial_place' => 'draft',
-            'places' => array(
+            'places' => [
                 'draft',
                 'wait_for_journalist',
                 'approved_by_journalist',
                 'wait_for_spellchecker',
                 'approved_by_spellchecker',
                 'published',
-            ),
-            'transitions' => array(
-                'request_review' => array(
+            ],
+            'transitions' => [
+                'request_review' => [
                     'from' => 'draft',
-                    'to' => array('wait_for_journalist', 'wait_for_spellchecker'),
-                ),
-                'journalist_approval' => array(
+                    'to' => ['wait_for_journalist', 'wait_for_spellchecker'],
+                ],
+                'journalist_approval' => [
                     'from' => 'wait_for_journalist',
                     'to' => 'approved_by_journalist',
-                ),
-                'spellchecker_approval' => array(
+                ],
+                'spellchecker_approval' => [
                     'from' => 'wait_for_spellchecker',
                     'to' => 'approved_by_spellchecker',
-                ),
-                'publish' => array(
-                    'from' => array('approved_by_journalist', 'approved_by_spellchecker'),
+                ],
+                'publish' => [
+                    'from' => ['approved_by_journalist', 'approved_by_spellchecker'],
                     'to' => 'published',
                     'guard' => '!!true',
-                ),
-                'publish_editor_in_chief' => array(
+                ],
+                'publish_editor_in_chief' => [
                     'name' => 'publish',
                     'from' => 'draft',
                     'to' => 'published',
                     'guard' => '!!false',
-                ),
-            ),
-        ),
-    ),
-));
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_multiple_transitions_with_same_name.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_multiple_transitions_with_same_name.php
index 2619a2dd4316..c1a525db03cd 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_multiple_transitions_with_same_name.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_multiple_transitions_with_same_name.php
@@ -2,48 +2,48 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'article' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'article' => [
             'type' => 'workflow',
-            'marking_store' => array(
+            'marking_store' => [
                 'type' => 'multiple_state',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
+            ],
             'initial_place' => 'draft',
-            'places' => array(
+            'places' => [
                 'draft',
                 'wait_for_journalist',
                 'approved_by_journalist',
                 'wait_for_spellchecker',
                 'approved_by_spellchecker',
                 'published',
-            ),
-            'transitions' => array(
-                'request_review' => array(
+            ],
+            'transitions' => [
+                'request_review' => [
                     'from' => 'draft',
-                    'to' => array('wait_for_journalist', 'wait_for_spellchecker'),
-                ),
-                'journalist_approval' => array(
+                    'to' => ['wait_for_journalist', 'wait_for_spellchecker'],
+                ],
+                'journalist_approval' => [
                     'from' => 'wait_for_journalist',
                     'to' => 'approved_by_journalist',
-                ),
-                'spellchecker_approval' => array(
+                ],
+                'spellchecker_approval' => [
                     'from' => 'wait_for_spellchecker',
                     'to' => 'approved_by_spellchecker',
-                ),
-                'publish' => array(
-                    'from' => array('approved_by_journalist', 'approved_by_spellchecker'),
+                ],
+                'publish' => [
+                    'from' => ['approved_by_journalist', 'approved_by_spellchecker'],
                     'to' => 'published',
-                ),
-                'publish_editor_in_chief' => array(
+                ],
+                'publish_editor_in_chief' => [
                     'name' => 'publish',
                     'from' => 'draft',
                     'to' => 'published',
-                ),
-            ),
-        ),
-    ),
-));
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_support_and_support_strategy.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_support_and_support_strategy.php
index 062fdb9f0dba..4b38093a3d1d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_support_and_support_strategy.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_support_and_support_strategy.php
@@ -2,30 +2,30 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'my_workflow' => array(
-            'marking_store' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'my_workflow' => [
+            'marking_store' => [
                 'type' => 'multiple_state',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
+            ],
             'support_strategy' => 'foobar',
-            'places' => array(
+            'places' => [
                 'first',
                 'last',
-            ),
-            'transitions' => array(
-                'go' => array(
-                    'from' => array(
+            ],
+            'transitions' => [
+                'go' => [
+                    'from' => [
                         'first',
-                    ),
-                    'to' => array(
+                    ],
+                    'to' => [
                         'last',
-                    ),
-                ),
-            ),
-        ),
-    ),
-));
+                    ],
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_type_and_service.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_type_and_service.php
index 7d9e596408c9..eca1e29c45b4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_type_and_service.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_with_type_and_service.php
@@ -2,30 +2,30 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'my_workflow' => array(
-            'marking_store' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'my_workflow' => [
+            'marking_store' => [
                 'type' => 'multiple_state',
                 'service' => 'workflow_service',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
-            'places' => array(
+            ],
+            'places' => [
                 'first',
                 'last',
-            ),
-            'transitions' => array(
-                'go' => array(
-                    'from' => array(
+            ],
+            'transitions' => [
+                'go' => [
+                    'from' => [
                         'first',
-                    ),
-                    'to' => array(
+                    ],
+                    'to' => [
                         'last',
-                    ),
-                ),
-            ),
-        ),
-    ),
-));
+                    ],
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_without_support_and_support_strategy.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_without_support_and_support_strategy.php
index 06948785e927..dd2a92dc2613 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_without_support_and_support_strategy.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflow_without_support_and_support_strategy.php
@@ -2,26 +2,26 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'my_workflow' => array(
-            'marking_store' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'my_workflow' => [
+            'marking_store' => [
                 'type' => 'multiple_state',
-            ),
-            'places' => array(
+            ],
+            'places' => [
                 'first',
                 'last',
-            ),
-            'transitions' => array(
-                'go' => array(
-                    'from' => array(
+            ],
+            'transitions' => [
+                'go' => [
+                    'from' => [
                         'first',
-                    ),
-                    'to' => array(
+                    ],
+                    'to' => [
                         'last',
-                    ),
-                ),
-            ),
-        ),
-    ),
-));
+                    ],
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows.php
index c527606561ee..69728496c550 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows.php
@@ -2,110 +2,110 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'article' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'article' => [
             'type' => 'workflow',
-            'marking_store' => array(
+            'marking_store' => [
                 'type' => 'multiple_state',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
+            ],
             'initial_place' => 'draft',
-            'places' => array(
+            'places' => [
                 'draft',
                 'wait_for_journalist',
                 'approved_by_journalist',
                 'wait_for_spellchecker',
                 'approved_by_spellchecker',
                 'published',
-            ),
-            'transitions' => array(
-                'request_review' => array(
+            ],
+            'transitions' => [
+                'request_review' => [
                     'from' => 'draft',
-                    'to' => array('wait_for_journalist', 'wait_for_spellchecker'),
-                ),
-                'journalist_approval' => array(
+                    'to' => ['wait_for_journalist', 'wait_for_spellchecker'],
+                ],
+                'journalist_approval' => [
                     'from' => 'wait_for_journalist',
                     'to' => 'approved_by_journalist',
-                ),
-                'spellchecker_approval' => array(
+                ],
+                'spellchecker_approval' => [
                     'from' => 'wait_for_spellchecker',
                     'to' => 'approved_by_spellchecker',
-                ),
-                'publish' => array(
-                    'from' => array('approved_by_journalist', 'approved_by_spellchecker'),
+                ],
+                'publish' => [
+                    'from' => ['approved_by_journalist', 'approved_by_spellchecker'],
                     'to' => 'published',
-                ),
-            ),
-        ),
-        'pull_request' => array(
+                ],
+            ],
+        ],
+        'pull_request' => [
             'type' => 'state_machine',
-            'marking_store' => array(
+            'marking_store' => [
                 'type' => 'single_state',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
+            ],
             'initial_place' => 'start',
-            'places' => array(
+            'places' => [
                 'start',
                 'coding',
                 'travis',
                 'review',
                 'merged',
                 'closed',
-            ),
-            'transitions' => array(
-                'submit' => array(
+            ],
+            'transitions' => [
+                'submit' => [
                     'from' => 'start',
                     'to' => 'travis',
-                ),
-                'update' => array(
-                    'from' => array('coding', 'travis', 'review'),
+                ],
+                'update' => [
+                    'from' => ['coding', 'travis', 'review'],
                     'to' => 'travis',
-                ),
-                'wait_for_review' => array(
+                ],
+                'wait_for_review' => [
                     'from' => 'travis',
                     'to' => 'review',
-                ),
-                'request_change' => array(
+                ],
+                'request_change' => [
                     'from' => 'review',
                     'to' => 'coding',
-                ),
-                'accept' => array(
+                ],
+                'accept' => [
                     'from' => 'review',
                     'to' => 'merged',
-                ),
-                'reject' => array(
+                ],
+                'reject' => [
                     'from' => 'review',
                     'to' => 'closed',
-                ),
-                'reopen' => array(
+                ],
+                'reopen' => [
                     'from' => 'closed',
                     'to' => 'review',
-                ),
-            ),
-        ),
-        'service_marking_store_workflow' => array(
+                ],
+            ],
+        ],
+        'service_marking_store_workflow' => [
             'type' => 'workflow',
-            'marking_store' => array(
+            'marking_store' => [
                 'service' => 'workflow_service',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
-            'places' => array(
+            ],
+            'places' => [
                 'first',
                 'last',
-            ),
-            'transitions' => array(
-                'go' => array(
+            ],
+            'transitions' => [
+                'go' => [
                     'from' => 'first',
                     'to' => 'last',
-                ),
-            ),
-        ),
-    ),
-));
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_enabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_enabled.php
index 9a2fe9136a4b..eb1773194097 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_enabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_enabled.php
@@ -1,5 +1,5 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'workflows' => null,
-));
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_explicitly_enabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_explicitly_enabled.php
index 16009b588fff..165d0daa11ae 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_explicitly_enabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_explicitly_enabled.php
@@ -1,19 +1,19 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
         'enabled' => true,
-        'foo' => array(
+        'foo' => [
             'type' => 'workflow',
-            'supports' => array('Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest'),
+            'supports' => ['Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest'],
             'initial_place' => 'bar',
-            'places' => array('bar', 'baz'),
-            'transitions' => array(
-                'bar_baz' => array(
-                    'from' => array('foo'),
-                    'to' => array('bar'),
-                ),
-            ),
-        ),
-    ),
-));
+            'places' => ['bar', 'baz'],
+            'transitions' => [
+                'bar_baz' => [
+                    'from' => ['foo'],
+                    'to' => ['bar'],
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_explicitly_enabled_named_workflows.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_explicitly_enabled_named_workflows.php
index bd36d87fa257..17055ec16f7d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_explicitly_enabled_named_workflows.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_explicitly_enabled_named_workflows.php
@@ -1,19 +1,19 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
         'enabled' => true,
-        'workflows' => array(
+        'workflows' => [
             'type' => 'workflow',
-            'supports' => array('Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest'),
+            'supports' => ['Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest'],
             'initial_place' => 'bar',
-            'places' => array('bar', 'baz'),
-            'transitions' => array(
-                'bar_baz' => array(
-                    'from' => array('foo'),
-                    'to' => array('bar'),
-                ),
-            ),
-        ),
-    ),
-));
+            'places' => ['bar', 'baz'],
+            'transitions' => [
+                'bar_baz' => [
+                    'from' => ['foo'],
+                    'to' => ['bar'],
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_without_type.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_without_type.php
index 63e83170fca5..4f25a7f801ab 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_without_type.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows_without_type.php
@@ -2,25 +2,25 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'missing_type' => array(
-            'marking_store' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'missing_type' => [
+            'marking_store' => [
                 'service' => 'workflow_service',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 \stdClass::class,
-            ),
-            'places' => array(
+            ],
+            'places' => [
                 'first',
                 'last',
-            ),
-            'transitions' => array(
-                'go' => array(
+            ],
+            'transitions' => [
+                'go' => [
                     'from' => 'first',
                     'to' => 'last',
-                ),
-            ),
-        ),
-    ),
-));
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index 01d395216a1a..51b4ff152426 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -48,7 +48,7 @@
 
 abstract class FrameworkExtensionTest extends TestCase
 {
-    private static $containerCache = array();
+    private static $containerCache = [];
 
     abstract protected function loadFromFile(ContainerBuilder $container, $file);
 
@@ -90,13 +90,13 @@ public function testPropertyAccessCache()
         }
 
         $cache = $container->getDefinition('cache.property_access');
-        $this->assertSame(array(PropertyAccessor::class, 'createCache'), $cache->getFactory(), 'PropertyAccessor::createCache() should be used in non-debug mode');
+        $this->assertSame([PropertyAccessor::class, 'createCache'], $cache->getFactory(), 'PropertyAccessor::createCache() should be used in non-debug mode');
         $this->assertSame(AdapterInterface::class, $cache->getClass());
     }
 
     public function testPropertyAccessCacheWithDebug()
     {
-        $container = $this->createContainerFromFile('property_accessor', array('kernel.debug' => true));
+        $container = $this->createContainerFromFile('property_accessor', ['kernel.debug' => true]);
 
         if (!method_exists(PropertyAccessor::class, 'createCache')) {
             return $this->assertFalse($container->hasDefinition('cache.property_access'));
@@ -197,18 +197,18 @@ public function testWorkflows()
         $workflowDefinition = $container->getDefinition('workflow.article.definition');
 
         $this->assertSame(
-            array(
+            [
                 'draft',
                 'wait_for_journalist',
                 'approved_by_journalist',
                 'wait_for_spellchecker',
                 'approved_by_spellchecker',
                 'published',
-            ),
+            ],
             $workflowDefinition->getArgument(0),
             'Places are passed to the workflow definition'
         );
-        $this->assertSame(array('workflow.definition' => array(array('name' => 'article', 'type' => 'workflow', 'marking_store' => 'multiple_state'))), $workflowDefinition->getTags());
+        $this->assertSame(['workflow.definition' => [['name' => 'article', 'type' => 'workflow', 'marking_store' => 'multiple_state']]], $workflowDefinition->getTags());
 
         $this->assertTrue($container->hasDefinition('state_machine.pull_request'), 'State machine is registered as a service');
         $this->assertTrue($container->hasDefinition('state_machine.pull_request.definition'), 'State machine definition is registered as a service');
@@ -218,18 +218,18 @@ public function testWorkflows()
         $stateMachineDefinition = $container->getDefinition('state_machine.pull_request.definition');
 
         $this->assertSame(
-            array(
+            [
                 'start',
                 'coding',
                 'travis',
                 'review',
                 'merged',
                 'closed',
-            ),
+            ],
             $stateMachineDefinition->getArgument(0),
             'Places are passed to the state machine definition'
         );
-        $this->assertSame(array('workflow.definition' => array(array('name' => 'pull_request', 'type' => 'state_machine', 'marking_store' => 'single_state'))), $stateMachineDefinition->getTags());
+        $this->assertSame(['workflow.definition' => [['name' => 'pull_request', 'type' => 'state_machine', 'marking_store' => 'single_state']]], $stateMachineDefinition->getTags());
         $this->assertCount(9, $stateMachineDefinition->getArgument(1));
         $this->assertSame('start', $stateMachineDefinition->getArgument(2));
 
@@ -303,60 +303,60 @@ public function testWorkflowMultipleTransitionsWithSameName()
         $this->assertCount(5, $transitions);
 
         $this->assertSame('workflow.article.transition.0', (string) $transitions[0]);
-        $this->assertSame(array(
+        $this->assertSame([
             'request_review',
-            array(
+            [
                 'draft',
-            ),
-            array(
+            ],
+            [
                 'wait_for_journalist', 'wait_for_spellchecker',
-            ),
-        ), $container->getDefinition($transitions[0])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[0])->getArguments());
 
         $this->assertSame('workflow.article.transition.1', (string) $transitions[1]);
-        $this->assertSame(array(
+        $this->assertSame([
             'journalist_approval',
-            array(
+            [
                 'wait_for_journalist',
-            ),
-            array(
+            ],
+            [
                 'approved_by_journalist',
-            ),
-        ), $container->getDefinition($transitions[1])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[1])->getArguments());
 
         $this->assertSame('workflow.article.transition.2', (string) $transitions[2]);
-        $this->assertSame(array(
+        $this->assertSame([
             'spellchecker_approval',
-            array(
+            [
                 'wait_for_spellchecker',
-            ),
-            array(
+            ],
+            [
                 'approved_by_spellchecker',
-            ),
-        ), $container->getDefinition($transitions[2])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[2])->getArguments());
 
         $this->assertSame('workflow.article.transition.3', (string) $transitions[3]);
-        $this->assertSame(array(
+        $this->assertSame([
             'publish',
-            array(
+            [
                 'approved_by_journalist',
                 'approved_by_spellchecker',
-            ),
-            array(
+            ],
+            [
                 'published',
-            ),
-        ), $container->getDefinition($transitions[3])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[3])->getArguments());
 
         $this->assertSame('workflow.article.transition.4', (string) $transitions[4]);
-        $this->assertSame(array(
+        $this->assertSame([
             'publish',
-            array(
+            [
                 'draft',
-            ),
-            array(
+            ],
+            [
                 'published',
-            ),
-        ), $container->getDefinition($transitions[4])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[4])->getArguments());
     }
 
     public function testGuardExpressions()
@@ -367,12 +367,12 @@ public function testGuardExpressions()
         $this->assertTrue($container->hasParameter('workflow.has_guard_listeners'), 'Workflow guard listeners parameter exists');
         $this->assertTrue(true === $container->getParameter('workflow.has_guard_listeners'), 'Workflow guard listeners parameter is enabled');
         $guardDefinition = $container->getDefinition('workflow.article.listener.guard');
-        $this->assertSame(array(
-            array(
+        $this->assertSame([
+            [
                 'event' => 'workflow.article.guard.publish',
                 'method' => 'onTransition',
-            ),
-        ), $guardDefinition->getTag('kernel.event_listener'));
+            ],
+        ], $guardDefinition->getTag('kernel.event_listener'));
         $guardsConfiguration = $guardDefinition->getArgument(0);
         $this->assertTrue(1 === \count($guardsConfiguration), 'Workflow guard configuration contains one element per transition name');
         $transitionGuardExpressions = $guardsConfiguration['workflow.article.guard.publish'];
@@ -438,7 +438,7 @@ public function testRouterRequiresResourceOption()
     {
         $container = $this->createContainer();
         $loader = new FrameworkExtension();
-        $loader->load(array(array('router' => true)), $container);
+        $loader->load([['router' => true]], $container);
     }
 
     public function testSession()
@@ -480,7 +480,7 @@ public function testRequest()
 
         $this->assertTrue($container->hasDefinition('request.add_request_formats_listener'), '->registerRequestConfiguration() loads request.xml');
         $listenerDef = $container->getDefinition('request.add_request_formats_listener');
-        $this->assertEquals(array('csv' => array('text/csv', 'text/plain'), 'pdf' => array('application/pdf')), $listenerDef->getArgument(0));
+        $this->assertEquals(['csv' => ['text/csv', 'text/plain'], 'pdf' => ['application/pdf']], $listenerDef->getArgument(0));
     }
 
     public function testEmptyRequestFormats()
@@ -505,9 +505,9 @@ public function testTemplating()
         $this->assertEquals('%templating.loader.cache.path%', $container->getDefinition('templating.loader.cache')->getArgument(1));
         $this->assertEquals('/path/to/cache', $container->getParameter('templating.loader.cache.path'));
 
-        $this->assertEquals(array('php', 'twig'), $container->getParameter('templating.engines'), '->registerTemplatingConfiguration() sets a templating.engines parameter');
+        $this->assertEquals(['php', 'twig'], $container->getParameter('templating.engines'), '->registerTemplatingConfiguration() sets a templating.engines parameter');
 
-        $this->assertEquals(array('FrameworkBundle:Form', 'theme1', 'theme2'), $container->getParameter('templating.helper.form.resources'), '->registerTemplatingConfiguration() registers the theme and adds the base theme');
+        $this->assertEquals(['FrameworkBundle:Form', 'theme1', 'theme2'], $container->getParameter('templating.helper.form.resources'), '->registerTemplatingConfiguration() registers the theme and adds the base theme');
         $this->assertEquals('global_hinclude_template', $container->getParameter('fragment.renderer.hinclude.global_template'), '->registerTemplatingConfiguration() registers the global hinclude.js template');
     }
 
@@ -525,7 +525,7 @@ public function testAssets()
 
         // default package
         $defaultPackage = $container->getDefinition((string) $packages->getArgument(0));
-        $this->assertUrlPackage($container, $defaultPackage, array('http://cdn.example.com'), 'SomeVersionScheme', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $defaultPackage, ['http://cdn.example.com'], 'SomeVersionScheme', '%%s?version=%%s');
 
         // packages
         $packages = $packages->getArgument(1);
@@ -535,13 +535,13 @@ public function testAssets()
         $this->assertPathPackage($container, $package, '/foo', 'SomeVersionScheme', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['images']);
-        $this->assertUrlPackage($container, $package, array('http://images1.example.com', 'http://images2.example.com'), '1.0.0', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $package, ['http://images1.example.com', 'http://images2.example.com'], '1.0.0', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['foo']);
         $this->assertPathPackage($container, $package, '', '1.0.0', '%%s-%%s');
 
         $package = $container->getDefinition((string) $packages['bar']);
-        $this->assertUrlPackage($container, $package, array('https://bar2.example.com'), 'SomeVersionScheme', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $package, ['https://bar2.example.com'], 'SomeVersionScheme', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['bar_version_strategy']);
         $this->assertEquals('assets.custom_version_strategy', (string) $package->getArgument(1));
@@ -613,7 +613,7 @@ public function testTranslator()
         );
 
         $calls = $container->getDefinition('translator.default')->getMethodCalls();
-        $this->assertEquals(array('fr'), $calls[1][1][0]);
+        $this->assertEquals(['fr'], $calls[1][1][0]);
     }
 
     public function testTranslatorMultipleFallbacks()
@@ -621,7 +621,7 @@ public function testTranslatorMultipleFallbacks()
         $container = $this->createContainerFromFile('translator_fallbacks');
 
         $calls = $container->getDefinition('translator.default')->getMethodCalls();
-        $this->assertEquals(array('en', 'fr'), $calls[1][1][0]);
+        $this->assertEquals(['en', 'fr'], $calls[1][1][0]);
     }
 
     public function testTranslatorHelperIsRegisteredWhenTranslatorIsEnabled()
@@ -645,7 +645,7 @@ public function testTemplatingRequiresAtLeastOneEngine()
     {
         $container = $this->createContainer();
         $loader = new FrameworkExtension();
-        $loader->load(array(array('templating' => null)), $container);
+        $loader->load([['templating' => null]], $container);
     }
 
     public function testValidation()
@@ -654,10 +654,10 @@ public function testValidation()
         $projectDir = $container->getParameter('kernel.project_dir');
 
         $ref = new \ReflectionClass('Symfony\Component\Form\Form');
-        $xmlMappings = array(
+        $xmlMappings = [
             \dirname($ref->getFileName()).'/Resources/config/validation.xml',
             strtr($projectDir.'/config/validator/foo.xml', '/', \DIRECTORY_SEPARATOR),
-        );
+        ];
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
 
@@ -665,33 +665,33 @@ public function testValidation()
 
         $this->assertCount($annotations ? 7 : 6, $calls);
         $this->assertSame('setConstraintValidatorFactory', $calls[0][0]);
-        $this->assertEquals(array(new Reference('validator.validator_factory')), $calls[0][1]);
+        $this->assertEquals([new Reference('validator.validator_factory')], $calls[0][1]);
         $this->assertSame('setTranslator', $calls[1][0]);
-        $this->assertEquals(array(new Reference('translator')), $calls[1][1]);
+        $this->assertEquals([new Reference('translator')], $calls[1][1]);
         $this->assertSame('setTranslationDomain', $calls[2][0]);
-        $this->assertSame(array('%validator.translation_domain%'), $calls[2][1]);
+        $this->assertSame(['%validator.translation_domain%'], $calls[2][1]);
         $this->assertSame('addXmlMappings', $calls[3][0]);
-        $this->assertSame(array($xmlMappings), $calls[3][1]);
+        $this->assertSame([$xmlMappings], $calls[3][1]);
         $i = 3;
         if ($annotations) {
             $this->assertSame('enableAnnotationMapping', $calls[++$i][0]);
         }
         $this->assertSame('addMethodMapping', $calls[++$i][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[$i][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[$i][1]);
         $this->assertSame('setMetadataCache', $calls[++$i][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[$i][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[$i][1]);
     }
 
     public function testValidationService()
     {
-        $container = $this->createContainerFromFile('validation_annotations', array('kernel.charset' => 'UTF-8'), false);
+        $container = $this->createContainerFromFile('validation_annotations', ['kernel.charset' => 'UTF-8'], false);
 
         $this->assertInstanceOf('Symfony\Component\Validator\Validator\ValidatorInterface', $container->get('validator'));
     }
 
     public function testAnnotations()
     {
-        $container = $this->createContainerFromFile('full', array(), true, false);
+        $container = $this->createContainerFromFile('full', [], true, false);
         $container->addCompilerPass(new TestAnnotationsPass());
         $container->compile();
 
@@ -718,11 +718,11 @@ public function testValidationAnnotations()
 
         $this->assertCount(7, $calls);
         $this->assertSame('enableAnnotationMapping', $calls[4][0]);
-        $this->assertEquals(array(new Reference('annotation_reader')), $calls[4][1]);
+        $this->assertEquals([new Reference('annotation_reader')], $calls[4][1]);
         $this->assertSame('addMethodMapping', $calls[5][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[5][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[5][1]);
         $this->assertSame('setMetadataCache', $calls[6][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[6][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[6][1]);
         // no cache this time
     }
 
@@ -730,10 +730,10 @@ public function testValidationPaths()
     {
         require_once __DIR__.'/Fixtures/TestBundle/TestBundle.php';
 
-        $container = $this->createContainerFromFile('validation_annotations', array(
-            'kernel.bundles' => array('TestBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\TestBundle'),
-            'kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'parent' => null, 'path' => __DIR__.'/Fixtures/TestBundle')),
-        ));
+        $container = $this->createContainerFromFile('validation_annotations', [
+            'kernel.bundles' => ['TestBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\TestBundle'],
+            'kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'parent' => null, 'path' => __DIR__.'/Fixtures/TestBundle']],
+        ]);
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
 
@@ -742,9 +742,9 @@ public function testValidationPaths()
         $this->assertSame('addYamlMappings', $calls[4][0]);
         $this->assertSame('enableAnnotationMapping', $calls[5][0]);
         $this->assertSame('addMethodMapping', $calls[6][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[6][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[6][1]);
         $this->assertSame('setMetadataCache', $calls[7][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[7][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[7][1]);
 
         $xmlMappings = $calls[3][1][0];
         $this->assertCount(3, $x
10000
mlMappings);
@@ -766,10 +766,10 @@ public function testValidationPathsUsingCustomBundlePath()
     {
         require_once __DIR__.'/Fixtures/CustomPathBundle/src/CustomPathBundle.php';
 
-        $container = $this->createContainerFromFile('validation_annotations', array(
-            'kernel.bundles' => array('CustomPathBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\CustomPathBundle'),
-            'kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'parent' => null, 'path' => __DIR__.'/Fixtures/CustomPathBundle')),
-        ));
+        $container = $this->createContainerFromFile('validation_annotations', [
+            'kernel.bundles' => ['CustomPathBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\CustomPathBundle'],
+            'kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'parent' => null, 'path' => __DIR__.'/Fixtures/CustomPathBundle']],
+        ]);
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
         $xmlMappings = $calls[3][1][0];
@@ -804,7 +804,7 @@ public function testValidationNoStaticMethod()
             $this->assertSame('enableAnnotationMapping', $calls[++$i][0]);
         }
         $this->assertSame('setMetadataCache', $calls[++$i][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[$i][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[$i][1]);
         // no cache, no annotations, no static methods
     }
 
@@ -847,19 +847,19 @@ public function testFormsCanBeEnabledWithoutCsrfProtection()
 
     public function testStopwatchEnabledWithDebugModeEnabled()
     {
-        $container = $this->createContainerFromFile('default_config', array(
+        $container = $this->createContainerFromFile('default_config', [
             'kernel.container_class' => 'foo',
             'kernel.debug' => true,
-        ));
+        ]);
 
         $this->assertTrue($container->has('debug.stopwatch'));
     }
 
     public function testStopwatchEnabledWithDebugModeDisabled()
     {
-        $container = $this->createContainerFromFile('default_config', array(
+        $container = $this->createContainerFromFile('default_config', [
             'kernel.container_class' => 'foo',
-        ));
+        ]);
 
         $this->assertTrue($container->has('debug.stopwatch'));
     }
@@ -882,7 +882,7 @@ public function testSerializerEnabled()
         $this->assertNull($container->getDefinition('serializer.mapping.class_metadata_factory')->getArgument(1));
         $this->assertEquals(new Reference('serializer.name_converter.camel_case_to_snake_case'), $container->getDefinition('serializer.normalizer.object')->getArgument(1));
         $this->assertEquals(new Reference('property_info', ContainerBuilder::IGNORE_ON_INVALID_REFERENCE), $container->getDefinition('serializer.normalizer.object')->getArgument(3));
-        $this->assertEquals(array('setCircularReferenceHandler', array(new Reference('my.circular.reference.handler'))), $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[0]);
+        $this->assertEquals(['setCircularReferenceHandler', [new Reference('my.circular.reference.handler')]], $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[0]);
     }
 
     public function testRegisterSerializerExtractor()
@@ -894,7 +894,7 @@ public function testRegisterSerializerExtractor()
         $this->assertEquals('serializer.mapping.class_metadata_factory', $serializerExtractorDefinition->getArgument(0)->__toString());
         $this->assertFalse($serializerExtractorDefinition->isPublic());
         $tag = $serializerExtractorDefinition->getTag('property_info.list_extractor');
-        $this->assertEquals(array('priority' => -999), $tag[0]);
+        $this->assertEquals(['priority' => -999], $tag[0]);
     }
 
     public function testDataUriNormalizerRegistered()
@@ -968,7 +968,7 @@ public function testSerializerCacheActivated()
 
     public function testSerializerCacheDisabled()
     {
-        $container = $this->createContainerFromFile('serializer_enabled', array('kernel.debug' => true, 'kernel.container_class' => __CLASS__));
+        $container = $this->createContainerFromFile('serializer_enabled', ['kernel.debug' => true, 'kernel.container_class' => __CLASS__]);
         $this->assertFalse($container->hasDefinition('serializer.mapping.cache_class_metadata_factory'));
     }
 
@@ -978,7 +978,7 @@ public function testSerializerCacheDisabled()
      */
     public function testDeprecatedSerializerCacheOption()
     {
-        $container = $this->createContainerFromFile('serializer_legacy_cache', array('kernel.debug' => true, 'kernel.container_class' => __CLASS__));
+        $container = $this->createContainerFromFile('serializer_legacy_cache', ['kernel.debug' => true, 'kernel.container_class' => __CLASS__]);
 
         $this->assertFalse($container->hasDefinition('serializer.mapping.cache_class_metadata_factory'));
         $this->assertTrue($container->hasDefinition('serializer.mapping.class_metadata_factory'));
@@ -989,19 +989,19 @@ public function testDeprecatedSerializerCacheOption()
 
     public function testSerializerMapping()
     {
-        $container = $this->createContainerFromFile('serializer_mapping', array('kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle', 'parent' => null))));
+        $container = $this->createContainerFromFile('serializer_mapping', ['kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle', 'parent' => null]]]);
         $projectDir = $container->getParameter('kernel.project_dir');
         $configDir = __DIR__.'/Fixtures/TestBundle/Resources/config';
-        $expectedLoaders = array(
-            new Definition(AnnotationLoader::class, array(new Reference('annotation_reader'))),
-            new Definition(XmlFileLoader::class, array($configDir.'/serialization.xml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serialization.yml')),
-            new Definition(YamlFileLoader::class, array($projectDir.'/config/serializer/foo.yml')),
-            new Definition(XmlFileLoader::class, array($configDir.'/serializer_mapping/files/foo.xml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/files/foo.yml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/serialization.yml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/serialization.yaml')),
-        );
+        $expectedLoaders = [
+            new Definition(AnnotationLoader::class, [new Reference('annotation_reader')]),
+            new Definition(XmlFileLoader::class, [$configDir.'/serialization.xml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serialization.yml']),
+            new Definition(YamlFileLoader::class, [$projectDir.'/config/serializer/foo.yml']),
+            new Definition(XmlFileLoader::class, [$configDir.'/serializer_mapping/files/foo.xml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/files/foo.yml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/serialization.yml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/serialization.yaml']),
+        ];
 
         foreach ($expectedLoaders as $definition) {
             if (is_file($arg = $definition->getArgument(0))) {
@@ -1071,7 +1071,7 @@ public function testPropertyInfoEnabled()
 
     public function testEventDispatcherService()
     {
-        $container = $this->createContainer(array('kernel.charset' => 'UTF-8', 'kernel.secret' => 'secret'));
+        $container = $this->createContainer(['kernel.charset' => 'UTF-8', 'kernel.secret' => 'secret']);
         $container->registerExtension(new FrameworkExtension());
         $this->loadFromFile($container, 'default_config');
         $container
@@ -1123,20 +1123,20 @@ public function testCachePoolServices()
 
     public function testRemovesResourceCheckerConfigCacheFactoryArgumentOnlyIfNoDebug()
     {
-        $container = $this->createContainer(array('kernel.debug' => true));
-        (new FrameworkExtension())->load(array(), $container);
+        $container = $this->createContainer(['kernel.debug' => true]);
+        (new FrameworkExtension())->load([], $container);
         $this->assertCount(1, $container->getDefinition('config_cache_factory')->getArguments());
 
-        $container = $this->createContainer(array('kernel.debug' => false));
-        (new FrameworkExtension())->load(array(), $container);
+        $container = $this->createContainer(['kernel.debug' => false]);
+        (new FrameworkExtension())->load([], $container);
         $this->assertEmpty($container->getDefinition('config_cache_factory')->getArguments());
     }
 
-    protected function createContainer(array $data = array())
+    protected function createContainer(array $data = [])
     {
-        return new ContainerBuilder(new ParameterBag(array_merge(array(
-            'kernel.bundles' => array('FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'),
-            'kernel.bundles_metadata' => array('FrameworkBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle', 'path' => __DIR__.'/../..', 'parent' => null)),
+        return new ContainerBuilder(new ParameterBag(array_merge([
+            'kernel.bundles' => ['FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'],
+            'kernel.bundles_metadata' => ['FrameworkBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle', 'path' => __DIR__.'/../..', 'parent' => null]],
             'kernel.cache_dir' => __DIR__,
             'kernel.project_dir' => __DIR__,
             'kernel.debug' => false,
@@ -1147,10 +1147,10 @@ protected function createContainer(array $data = array())
             'container.build_hash' => 'Abc1234',
             'container.build_id' => hash('crc32', 'Abc123423456789'),
             'container.build_time' => 23456789,
-        ), $data)));
+        ], $data)));
     }
 
-    protected function createContainerFromFile($file, $data = array(), $resetCompilerPasses = true, $compile = true)
+    protected function createContainerFromFile($file, $data = [], $resetCompilerPasses = true, $compile = true)
     {
         $cacheKey = md5(\get_class($this).$file.serialize($data));
         if ($compile && isset(self::$containerCache[$cacheKey])) {
@@ -1161,11 +1161,11 @@ protected function createContainerFromFile($file, $data = array(), $resetCompile
         $this->loadFromFile($container, $file);
 
         if ($resetCompilerPasses) {
-            $container->getCompilerPassConfig()->setOptimizationPasses(array());
-            $container->getCompilerPassConfig()->setRemovingPasses(array());
+            $container->getCompilerPassConfig()->setOptimizationPasses([]);
+            $container->getCompilerPassConfig()->setRemovingPasses([]);
         }
-        $container->getCompilerPassConfig()->setBeforeRemovingPasses(array(new AddConstraintValidatorsPass(), new TranslatorPass('translator.default', 'translation.reader')));
-        $container->getCompilerPassConfig()->setAfterRemovingPasses(array(new AddAnnotationsCachedReaderPass()));
+        $container->getCompilerPassConfig()->setBeforeRemovingPasses([new AddConstraintValidatorsPass(), new TranslatorPass('translator.default', 'translation.reader')]);
+        $container->getCompilerPassConfig()->setAfterRemovingPasses([new AddAnnotationsCachedReaderPass()]);
 
         if (!$compile) {
             return $container;
@@ -1175,15 +1175,15 @@ protected function createContainerFromFile($file, $data = array(), $resetCompile
         return self::$containerCache[$cacheKey] = $container;
     }
 
-    protected function createContainerFromClosure($closure, $data = array())
+    protected function createContainerFromClosure($closure, $data = [])
     {
         $container = $this->createContainer($data);
         $container->registerExtension(new FrameworkExtension());
         $loader = new ClosureLoader($container);
         $loader->load($closure);
 
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         return $container;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php
index c554532c7a09..ec39372b1dcd 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/PhpFrameworkExtensionTest.php
@@ -29,12 +29,12 @@ protected function loadFromFile(ContainerBuilder $container, $file)
     public function testAssetsCannotHavePathAndUrl()
     {
         $this->createContainerFromClosure(function ($container) {
-            $container->loadFromExtension('framework', array(
-                'assets' => array(
+            $container->loadFromExtension('framework', [
+                'assets' => [
                     'base_urls' => 'http://cdn.example.com',
                     'base_path' => '/foo',
-                ),
-            ));
+                ],
+            ]);
         });
     }
 
@@ -44,16 +44,16 @@ public function testAssetsCannotHavePathAndUrl()
     public function testAssetPackageCannotHavePathAndUrl()
     {
         $this->createContainerFromClosure(function ($container) {
-            $container->loadFromExtension('framework', array(
-                'assets' => array(
-                    'packages' => array(
-                        'impossible' => array(
+            $container->loadFromExtension('framework', [
+                'assets' => [
+                    'packages' => [
+                        'impossible' => [
                             'base_urls' => 'http://cdn.example.com',
                             'base_path' => '/foo',
-                        ),
-                    ),
-                ),
-            ));
+                        ],
+                    ],
+                ],
+            ]);
         });
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/EventListener/ResolveControllerNameSubscriberTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/EventListener/ResolveControllerNameSubscriberTest.php
index 338c1ec81a5c..92211dc34132 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/EventListener/ResolveControllerNameSubscriberTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/EventListener/ResolveControllerNameSubscriberTest.php
@@ -57,7 +57,7 @@ public function testSkipsOtherControllerFormats($controller)
 
     public function provideSkippedControllers()
     {
-        yield array('Other:format');
-        yield array(function () {});
+        yield ['Other:format'];
+        yield [function () {}];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/templates.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/templates.php
index b97a6ba6a7c5..c9a7ad7a1df0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/templates.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/templates.php
@@ -1,5 +1,5 @@
 <?php
 
-return array(
+return [
     'bundle:controller:name.format.engine' => __DIR__.'/../Fixtures/Resources/views/this.is.a.template.format.engine',
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AnnotatedControllerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AnnotatedControllerTest.php
index 2fdbef883949..51a3e7ee5424 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AnnotatedControllerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AnnotatedControllerTest.php
@@ -18,7 +18,7 @@ class AnnotatedControllerTest extends WebTestCase
      */
     public function testAnnotatedController($path, $expectedValue)
     {
-        $client = $this->createClient(array('test_case' => 'AnnotatedController', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'AnnotatedController', 'root_config' => 'config.yml']);
         $client->request('GET', '/annotated'.$path);
 
         $this->assertSame(200, $client->getResponse()->getStatusCode());
@@ -27,13 +27,13 @@ public function testAnnotatedController($path, $expectedValue)
 
     public function getRoutes()
     {
-        return array(
-            array('/null_request', 'Symfony\Component\HttpFoundation\Request'),
-            array('/null_argument', ''),
-            array('/null_argument_with_route_param', ''),
-            array('/null_argument_with_route_param/value', 'value'),
-            array('/argument_with_route_param_and_default', 'value'),
-            array('/argument_with_route_param_and_default/custom', 'custom'),
-        );
+        return [
+            ['/null_request', 'Symfony\Component\HttpFoundation\Request'],
+            ['/null_argument', ''],
+            ['/null_argument_with_route_param', ''],
+            ['/null_argument_with_route_param/value', 'value'],
+            ['/argument_with_route_param_and_default', 'value'],
+            ['/argument_with_route_param_and_default/custom', 'custom'],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AutowiringTypesTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AutowiringTypesTest.php
index 1fba6d776252..1db447ac64d6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AutowiringTypesTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AutowiringTypesTest.php
@@ -24,7 +24,7 @@ class AutowiringTypesTest extends WebTestCase
 {
     public function testAnnotationReaderAutowiring()
     {
-        static::bootKernel(array('root_config' => 'no_annotations_cache.yml', 'environment' => 'no_annotations_cache'));
+        static::bootKernel(['root_config' => 'no_annotations_cache.yml', 'environment' => 'no_annotations_cache']);
         $container = static::$kernel->getContainer();
 
         $annotationReader = $container->get('test.autowiring_types.autowired_services')->getAnnotationReader();
@@ -52,7 +52,7 @@ public function testTemplatingAutowiring()
 
     public function testEventDispatcherAutowiring()
     {
-        static::bootKernel(array('debug' => false));
+        static::bootKernel(['debug' => false]);
         $container = static::$kernel->getContainer();
 
         $autowiredServices = $container->get('test.autowiring_types.autowired_services');
@@ -63,7 +63,7 @@ public function testEventDispatcherAutowiring()
             $this->assertInstanceOf(EventDispatcher::class, $autowiredServices->getDispatcher(), 'The event_dispatcher service should be injected if the debug is not enabled');
         }
 
-        static::bootKernel(array('debug' => true));
+        static::bootKernel(['debug' => true]);
         $container = static::$kernel->getContainer();
 
         $autowiredServices = $container->get('test.autowiring_types.autowired_services');
@@ -79,8 +79,8 @@ public function testCacheAutowiring()
         $this->assertInstanceOf(FilesystemAdapter::class, $autowiredServices->getCachePool());
     }
 
-    protected static function createKernel(array $options = array())
+    protected static function createKernel(array $options = [])
     {
-        return parent::createKernel(array('test_case' => 'AutowiringTypes') + $options);
+        return parent::createKernel(['test_case' => 'AutowiringTypes'] + $options);
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/FragmentController.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/FragmentController.php
index 88bd102a5f4c..aa78c87190e6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/FragmentController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/FragmentController.php
@@ -22,7 +22,7 @@ class FragmentController implements ContainerAwareInterface
 
     public function indexAction(Request $request)
     {
-        return $this->container->get('templating')->renderResponse('fragment.html.php', array('bar' => new Bar()));
+        return $this->container->get('templating')->renderResponse('fragment.html.php', ['bar' => new Bar()]);
     }
 
     public function inlinedAction($options, $_format)
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestController.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestController.php
index 1df462992be3..54ae9c19e89e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestController.php
@@ -23,12 +23,12 @@ class SubRequestController implements ContainerAwareInterface
 
     public function indexAction($handler)
     {
-        $errorUrl = $this->generateUrl('subrequest_fragment_error', array('_locale' => 'fr', '_format' => 'json'));
-        $altUrl = $this->generateUrl('subrequest_fragment', array('_locale' => 'fr', '_format' => 'json'));
+        $errorUrl = $this->generateUrl('subrequest_fragment_error', ['_locale' => 'fr', '_format' => 'json']);
+        $altUrl = $this->generateUrl('subrequest_fragment', ['_locale' => 'fr', '_format' => 'json']);
 
         // simulates a failure during the rendering of a fragment...
         // should render fr/json
-        $content = $handler->render($errorUrl, 'inline', array('alt' => $altUrl));
+        $content = $handler->render($errorUrl, 'inline', ['alt' => $altUrl]);
 
         // ...to check that the FragmentListener still references the right Request
         // when rendering another fragment after the error occurred
@@ -59,7 +59,7 @@ public function fragmentErrorAction()
         throw new \RuntimeException('error');
     }
 
-    protected function generateUrl($name, $arguments = array())
+    protected function generateUrl($name, $arguments = [])
     {
         return $this->container->get('router')->generate($name, $arguments);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestServiceResolutionController.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestServiceResolutionController.php
index ae17f605a40f..7d7d6565c9c6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestServiceResolutionController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestServiceResolutionController.php
@@ -26,7 +26,7 @@ public function indexAction()
         $request = $this->container->get('request_stack')->getCurrentRequest();
         $path['_forwarded'] = $request->attributes;
         $path['_controller'] = 'TestBundle:SubRequestServiceResolution:fragment';
-        $subRequest = $request->duplicate(array(), null, $path);
+        $subRequest = $request->duplicate([], null, $path);
 
         return $this->container->get('http_kernel')->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/DependencyInjection/TestExtension.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/DependencyInjection/TestExtension.php
index 66489374f622..59670fdd19a2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/DependencyInjection/TestExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/DependencyInjection/TestExtension.php
@@ -36,7 +36,7 @@ public function load(array $configs, ContainerBuilder $container)
      */
     public function prepend(ContainerBuilder $container)
     {
-        $container->prependExtensionConfig('test', array('custom' => 'foo'));
+        $container->prependExtensionConfig('test', ['custom' => 'foo']);
     }
 
     /**
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
index 384beebff1f6..e3fd2dc4ab34 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
@@ -22,13 +22,13 @@ class CachePoolClearCommandTest extends WebTestCase
 {
     protected function setUp()
     {
-        static::bootKernel(array('test_case' => 'CachePoolClear', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'CachePoolClear', 'root_config' => 'config.yml']);
     }
 
     public function testClearPrivatePool()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('pools' => array('cache.private_pool')), array('decorated' => false));
+        $tester->execute(['pools' => ['cache.private_pool']], ['decorated' => false]);
 
         $this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
         $this->assertContains('Clearing cache pool: cache.private_pool', $tester->getDisplay());
@@ -38,7 +38,7 @@ public function testClearPrivatePool()
     public function testClearPublicPool()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('pools' => array('cache.public_pool')), array('decorated' => false));
+        $tester->execute(['pools' => ['cache.public_pool']], ['decorated' => false]);
 
         $this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
         $this->assertContains('Clearing cache pool: cache.public_pool', $tester->getDisplay());
@@ -48,7 +48,7 @@ public function testClearPublicPool()
     public function testClearPoolWithCustomClearer()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('pools' => array('cache.pool_with_clearer')), array('decorated' => false));
+        $tester->execute(['pools' => ['cache.pool_with_clearer']], ['decorated' => false]);
 
         $this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
         $this->assertContains('Clearing cache pool: cache.pool_with_clearer', $tester->getDisplay());
@@ -58,7 +58,7 @@ public function testClearPoolWithCustomClearer()
     public function testCallClearer()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('pools' => array('cache.app_clearer')), array('decorated' => false));
+        $tester->execute(['pools' => ['cache.app_clearer']], ['decorated' => false]);
 
         $this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
         $this->assertContains('Calling cache clearer: cache.app_clearer', $tester->getDisplay());
@@ -72,7 +72,7 @@ public function testCallClearer()
     public function testClearUnexistingPool()
     {
         $this->createCommandTester()
-            ->execute(array('pools' => array('unknown_pool')), array('decorated' => false));
+            ->execute(['pools' => ['unknown_pool']], ['decorated' => false]);
     }
 
     /**
@@ -86,7 +86,7 @@ public function testLegacyClearCommand()
 
         $tester = new CommandTester($application->find('cache:pool:clear'));
 
-        $tester->execute(array('pools' => array()));
+        $tester->execute(['pools' => []]);
 
         $this->assertContains('Cache was successfully cleared', $tester->getDisplay());
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolsTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolsTest.php
index eafc798a4838..2a6d43a9f806 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolsTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolsTest.php
@@ -19,7 +19,7 @@ class CachePoolsTest extends WebTestCase
 {
     public function testCachePools()
     {
-        $this->doTestCachePools(array(), AdapterInterface::class);
+        $this->doTestCachePools([], AdapterInterface::class);
     }
 
     /**
@@ -28,7 +28,7 @@ public function testCachePools()
     public function testRedisCachePools()
     {
         try {
-            $this->doTestCachePools(array('root_config' => 'redis_config.yml', 'environment' => 'redis_cache'), RedisAdapter::class);
+            $this->doTestCachePools(['root_config' => 'redis_config.yml', 'environment' => 'redis_cache'], RedisAdapter::class);
         } catch (\PHPUnit\Framework\Error\Warning $e) {
             if (0 !== strpos($e->getMessage(), 'unable to connect to')) {
                 throw $e;
@@ -53,7 +53,7 @@ public function testRedisCachePools()
     public function testRedisCustomCachePools()
     {
         try {
-            $this->doTestCachePools(array('root_config' => 'redis_custom_config.yml', 'environment' => 'custom_redis_cache'), RedisAdapter::class);
+            $this->doTestCachePools(['root_config' => 'redis_custom_config.yml', 'environment' => 'custom_redis_cache'], RedisAdapter::class);
         } catch (\PHPUnit\Framework\Error\Warning $e) {
             if (0 !== strpos($e->getMessage(), 'unable to connect to')) {
                 throw $e;
@@ -96,8 +96,8 @@ private function doTestCachePools($options, $adapterClass)
         $this->assertTrue($item->isHit());
     }
 
-    protected static function createKernel(array $options = array())
+    protected static function createKernel(array $options = [])
     {
-        return parent::createKernel(array('test_case' => 'CachePools') + $options);
+        return parent::createKernel(['test_case' => 'CachePools'] + $options);
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ConfigDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ConfigDebugCommandTest.php
index a98879938d13..2c0a75481b39 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ConfigDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ConfigDebugCommandTest.php
@@ -25,15 +25,15 @@ class ConfigDebugCommandTest extends WebTestCase
 
     protected function setUp()
     {
-        $kernel = static::createKernel(array('test_case' => 'ConfigDump', 'root_config' => 'config.yml'));
+        $kernel = static::createKernel(['test_case' => 'ConfigDump', 'root_config' => 'config.yml']);
         $this->application = new Application($kernel);
-        $this->application->doRun(new ArrayInput(array()), new NullOutput());
+        $this->application->doRun(new ArrayInput([]), new NullOutput());
     }
 
     public function testDumpBundleName()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('name' => 'TestBundle'));
+        $ret = $tester->execute(['name' => 'TestBundle']);
 
         $this->assertSame(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('custom: foo', $tester->getDisplay());
@@ -42,7 +42,7 @@ public function testDumpBundleName()
     public function testDumpBundleOption()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('name' => 'TestBundle', 'path' => 'custom'));
+        $ret = $tester->execute(['name' => 'TestBundle', 'path' => 'custom']);
 
         $this->assertSame(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('foo', $tester->getDisplay());
@@ -51,7 +51,7 @@ public function testDumpBundleOption()
     public function testParametersValuesAreResolved()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('name' => 'framework'));
+        $ret = $tester->execute(['name' => 'framework']);
 
         $this->assertSame(0, $ret, 'Returns 0 in case of success');
         $this->assertContains("locale: '%env(LOCALE)%'", $tester->getDisplay());
@@ -61,7 +61,7 @@ public function testParametersValuesAreResolved()
     public function testDumpUndefinedBundleOption()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('name' => 'TestBundle', 'path' => 'foo'));
+        $tester->execute(['name' => 'TestBundle', 'path' => 'foo']);
 
         $this->assertContains('Unable to find configuration for "test.foo"', $tester->getDisplay());
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ConfigDumpReferenceCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ConfigDumpReferenceCommandTest.php
index 3817afed170c..a4cfd6cfa9b7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ConfigDumpReferenceCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ConfigDumpReferenceCommandTest.php
@@ -25,15 +25,15 @@ class ConfigDumpReferenceCommandTest extends WebTestCase
 
     protected function setUp()
     {
-        $kernel = static::createKernel(array('test_case' => 'ConfigDump', 'root_config' => 'config.yml'));
+        $kernel = static::createKernel(['test_case' => 'ConfigDump', 'root_config' => 'config.yml']);
         $this->application = new Application($kernel);
-        $this->application->doRun(new ArrayInput(array()), new NullOutput());
+        $this->application->doRun(new ArrayInput([]), new NullOutput());
     }
 
     public function testDumpBundleName()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('name' => 'TestBundle'));
+        $ret = $tester->execute(['name' => 'TestBundle']);
 
         $this->assertSame(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('test:', $tester->getDisplay());
@@ -43,10 +43,10 @@ public function testDumpBundleName()
     public function testDumpAtPath()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array(
+        $ret = $tester->execute([
             'name' => 'test',
             'path' => 'array',
-        ));
+        ]);
 
         $this->assertSame(0, $ret, 'Returns 0 in case of success');
         $this->assertSame(<<<'EOL'
@@ -63,11 +63,11 @@ public function testDumpAtPath()
     public function testDumpAtPathXml()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array(
+        $ret = $tester->execute([
             'name' => 'test',
             'path' => 'array',
             '--format' => 'xml',
-        ));
+        ]);
 
         $this->assertSame(1, $ret);
         $this->assertContains('[ERROR] The "path" option is only available for the "yaml" format.', $tester->getDisplay());
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
index d19b08f739b8..0400efc25e29 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
@@ -21,7 +21,7 @@ class ContainerDebugCommandTest extends WebTestCase
 {
     public function testDumpContainerIfNotExists()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
@@ -29,37 +29,37 @@ public function testDumpContainerIfNotExists()
         @unlink(static::$kernel->getContainer()->getParameter('debug.container.dump'));
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:container'));
+        $tester->run(['command' => 'debug:container']);
 
         $this->assertFileExists(static::$kernel->getContainer()->getParameter('debug.container.dump'));
     }
 
     public function testNoDebug()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml', 'debug' => false));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml', 'debug' => false]);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:container'));
+        $tester->run(['command' => 'debug:container']);
 
         $this->assertContains('public', $tester->getDisplay());
     }
 
     public function testPrivateAlias()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:container', '--show-private' => true));
+        $tester->run(['command' => 'debug:container', '--show-private' => true]);
         $this->assertContains('public', $tester->getDisplay());
         $this->assertContains('private_alias', $tester->getDisplay());
 
-        $tester->run(array('command' => 'debug:container'));
+        $tester->run(['command' => 'debug:container']);
         $this->assertContains('public', $tester->getDisplay());
         $this->assertNotContains('private_alias', $tester->getDisplay());
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDumpTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDumpTest.php
index 423d673be2f9..7c3128dc5c07 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDumpTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDumpTest.php
@@ -18,14 +18,14 @@ class ContainerDumpTest extends WebTestCase
 {
     public function testContainerCompilationInDebug()
     {
-        $client = $this->createClient(array('test_case' => 'ContainerDump', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'ContainerDump', 'root_config' => 'config.yml']);
 
         $this->assertTrue($client->getContainer()->has('serializer'));
     }
 
     public function testContainerCompilation()
     {
-        $client = $this->createClient(array('test_case' => 'ContainerDump', 'root_config' => 'config.yml', 'debug' => false));
+        $client = $this->createClient(['test_case' => 'ContainerDump', 'root_config' => 'config.yml', 'debug' => false]);
 
         $this->assertTrue($client->getContainer()->has('serializer'));
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutowiringCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutowiringCommandTest.php
index 0b7f9290a50b..7e41d3298d9c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutowiringCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutowiringCommandTest.php
@@ -21,13 +21,13 @@ class DebugAutowiringCommandTest extends WebTestCase
 {
     public function testBasicFunctionality()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:autowiring'));
+        $tester->run(['command' => 'debug:autowiring']);
 
         $this->assertContains('Symfony\Component\HttpKernel\HttpKernelInterface', $tester->getDisplay());
         $this->assertContains('alias to http_kernel', $tester->getDisplay());
@@ -35,13 +35,13 @@ public function testBasicFunctionality()
 
     public function testSearchArgument()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:autowiring', 'search' => 'kern'));
+        $tester->run(['command' => 'debug:autowiring', 'search' => 'kern']);
 
         $this->assertContains('Symfony\Component\HttpKernel\HttpKernelInterface', $tester->getDisplay());
         $this->assertNotContains('Symfony\Component\Routing\RouterInterface', $tester->getDisplay());
@@ -49,13 +49,13 @@ public function testSearchArgument()
 
     public function testSearchNoResults()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:autowiring', 'search' => 'foo_fake'), array('capture_stderr_separately' => true));
+        $tester->run(['command' => 'debug:autowiring', 'search' => 'foo_fake'], ['capture_stderr_separately' => true]);
 
         $this->assertContains('No autowirable classes or interfaces found matching "foo_fake"', $tester->getErrorOutput());
         $this->assertEquals(1, $tester->getStatusCode());
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/FragmentTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/FragmentTest.php
index dff65d636c0b..db550a23129b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/FragmentTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/FragmentTest.php
@@ -18,7 +18,7 @@ class FragmentTest extends WebTestCase
      */
     public function testFragment($insulate)
     {
-        $client = $this->createClient(array('test_case' => 'Fragment', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'Fragment', 'root_config' => 'config.yml']);
         if ($insulate) {
             $client->insulate();
         }
@@ -30,9 +30,9 @@ public function testFragment($insulate)
 
     public function getConfigs()
     {
-        return array(
-            array(false),
-            array(true),
-        );
+        return [
+            [false],
+            [true],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ProfilerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ProfilerTest.php
index 2d422b029208..c5252c0d5892 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ProfilerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ProfilerTest.php
@@ -18,7 +18,7 @@ class ProfilerTest extends WebTestCase
      */
     public function testProfilerIsDisabled($insulate)
     {
-        $client = $this->createClient(array('test_case' => 'Profiler', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'Profiler', 'root_config' => 'config.yml']);
         if ($insulate) {
             $client->insulate();
         }
@@ -38,9 +38,9 @@ public function testProfilerIsDisabled($insulate)
 
     public function getConfigs()
     {
-        return array(
-            array(false),
-            array(true),
-        );
+        return [
+            [false],
+            [true],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/PropertyInfoTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/PropertyInfoTest.php
index f98072ce7b39..832b45b818f7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/PropertyInfoTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/PropertyInfoTest.php
@@ -17,10 +17,10 @@ class PropertyInfoTest extends WebTestCase
 {
     public function testPhpDocPriority()
     {
-        static::bootKernel(array('test_case' => 'Serializer'));
+        static::bootKernel(['test_case' => 'Serializer']);
         $container = static::$kernel->getContainer();
 
-        $this->assertEquals(array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_INT))), $container->get('test.property_info')->getTypes('Symfony\Bundle\FrameworkBundle\Tests\Functional\Dummy', 'codes'));
+        $this->assertEquals([new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_INT))], $container->get('test.property_info')->getTypes('Symfony\Bundle\FrameworkBundle\Tests\Functional\Dummy', 'codes'));
     }
 }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SerializerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SerializerTest.php
index bc7dc12ebfbc..c2c53ef7b0dc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SerializerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SerializerTest.php
@@ -18,7 +18,7 @@ class SerializerTest extends WebTestCase
 {
     public function testDeserializeArrayOfObject()
     {
-        static::bootKernel(array('test_case' => 'Serializer'));
+        static::bootKernel(['test_case' => 'Serializer']);
         $container = static::$kernel->getContainer();
 
         $result = $container->get('serializer')->deserialize('{"bars": [{"id": 1}, {"id": 2}]}', Foo::class, 'json');
@@ -29,7 +29,7 @@ public function testDeserializeArrayOfObject()
         $bar2->id = 2;
 
         $expected = new Foo();
-        $expected->bars = array($bar1, $bar2);
+        $expected->bars = [$bar1, $bar2];
 
         $this->assertEquals($expected, $result);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SessionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SessionTest.php
index 2e1634220c3a..aad3d77949ba 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SessionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SessionTest.php
@@ -20,7 +20,7 @@ class SessionTest extends WebTestCase
      */
     public function testWelcome($config, $insulate)
     {
-        $client = $this->createClient(array('test_case' => 'Session', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'Session', 'root_config' => $config]);
         if ($insulate) {
             $client->insulate();
         }
@@ -53,7 +53,7 @@ public function testWelcome($config, $insulate)
      */
     public function testFlash($config, $insulate)
     {
-        $client = $this->createClient(array('test_case' => 'Session', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'Session', 'root_config' => $config]);
         if ($insulate) {
             $client->insulate();
         }
@@ -78,13 +78,13 @@ public function testFlash($config, $insulate)
     public function testTwoClients($config, $insulate)
     {
         // start first client
-        $client1 = $this->createClient(array('test_case' => 'Session', 'root_config' => $config));
+        $client1 = $this->createClient(['test_case' => 'Session', 'root_config' => $config]);
         if ($insulate) {
             $client1->insulate();
         }
 
         // start second client
-        $client2 = $this->createClient(array('test_case' => 'Session', 'root_config' => $config));
+        $client2 = $this->createClient(['test_case' => 'Session', 'root_config' => $config]);
         if ($insulate) {
             $client2->insulate();
         }
@@ -131,7 +131,7 @@ public function testTwoClients($config, $insulate)
      */
     public function testCorrectCacheControlHeadersForCacheableAction($config, $insulate)
     {
-        $client = $this->createClient(array('test_case' => 'Session', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'Session', 'root_config' => $config]);
         if ($insulate) {
             $client->insulate();
         }
@@ -144,10 +144,10 @@ public function testCorrectCacheControlHeadersForCacheableAction($config, $insul
 
     public function getConfigs()
     {
-        return array(
+        return [
             // configfile, insulate
-            array('config.yml', true),
-            array('config.yml', false),
-        );
+            ['config.yml', true],
+            ['config.yml', false],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SubRequestsTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SubRequestsTest.php
index 1a87ff928a6e..9d040581db50 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SubRequestsTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SubRequestsTest.php
@@ -15,7 +15,7 @@ class SubRequestsTest extends WebTestCase
 {
     public function testStateAfterSubRequest()
     {
-        $client = $this->createClient(array('test_case' => 'Session', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'Session', 'root_config' => 'config.yml']);
         $client->request('GET', 'https://localhost/subrequest/en');
 
         $this->assertEquals('--fr/json--en/html--fr/json--http://localhost/subrequest/fragment/en', $client->getResponse()->getContent());
@@ -23,7 +23,7 @@ public function testStateAfterSubRequest()
 
     public function testSubRequestControllerServicesAreResolved()
     {
-        $client = $this->createClient(array('test_case' => 'ControllerServiceResolution', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'ControllerServiceResolution', 'root_config' => 'config.yml']);
         $client->request('GET', 'https://localhost/subrequest');
 
         $this->assertEquals('---', $client->getResponse()->getContent());
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/WebTestCase.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/WebTestCase.php
index b25ab8e5a61c..3f7bb4c7ee68 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/WebTestCase.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/WebTestCase.php
@@ -49,7 +49,7 @@ protected static function getKernelClass()
         return 'Symfony\Bundle\FrameworkBundle\Tests\Functional\app\AppKernel';
     }
 
-    protected static function createKernel(array $options = array())
+    protected static function createKernel(array $options = [])
     {
         $class = self::getKernelClass();
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AnnotatedController/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AnnotatedController/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AnnotatedController/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AnnotatedController/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php
index e239bb533169..11457f6a7927 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php
@@ -81,7 +81,7 @@ protected function build(ContainerBuilder $container)
 
     public function serialize()
     {
-        return serialize(array($this->varDir, $this->testCase, $this->rootConfig, $this->getEnvironment(), $this->isDebug()));
+        return serialize([$this->varDir, $this->testCase, $this->rootConfig, $this->getEnvironment(), $this->isDebug()]);
     }
 
     public function unserialize($str)
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AutowiringTypes/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AutowiringTypes/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AutowiringTypes/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AutowiringTypes/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/CachePoolClear/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/CachePoolClear/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/CachePoolClear/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/CachePoolClear/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/CachePools/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/CachePools/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/CachePools/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/CachePools/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ConfigDump/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ConfigDump/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ConfigDump/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ConfigDump/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ContainerDebug/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ContainerDebug/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ContainerDebug/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ContainerDebug/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ContainerDump/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ContainerDump/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ContainerDump/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ContainerDump/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ControllerServiceResolution/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ControllerServiceResolution/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ControllerServiceResolution/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/ControllerServiceResolution/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Fragment/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Fragment/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Fragment/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Fragment/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Profiler/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Profiler/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Profiler/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Profiler/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Resources/views/fragment.html.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Resources/views/fragment.html.php
index 8ea3c36f8a4d..a474be4311c8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Resources/views/fragment.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Resources/views/fragment.html.php
@@ -1,13 +1,13 @@
-<?php echo $this->get('actions')->render($this->get('actions')->controller('TestBundle:Fragment:inlined', array(
-            'options' => array(
+<?php echo $this->get('actions')->render($this->get('actions')->controller('TestBundle:Fragment:inlined', [
+            'options' => [
                 'bar' => $bar,
                 'eleven' => 11,
-            ),
-        )));
+            ],
+        ]));
 ?>--<?php
-        echo $this->get('actions')->render($this->get('actions')->controller('TestBundle:Fragment:customformat', array('_format' => 'html')));
+        echo $this->get('actions')->render($this->get('actions')->controller('TestBundle:Fragment:customformat', ['_format' => 'html']));
 ?>--<?php
-        echo $this->get('actions')->render($this->get('actions')->controller('TestBundle:Fragment:customlocale', array('_locale' => 'es')));
+        echo $this->get('actions')->render($this->get('actions')->controller('TestBundle:Fragment:customlocale', ['_locale' => 'es']));
 ?>--<?php
         $app->getRequest()->setLocale('fr');
         echo $this->get('actions')->render($this->get('actions')->controller('TestBundle:Fragment:forwardlocale'));
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Serializer/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Serializer/bundles.php
index 144db9023603..13ab9fddee4a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Serializer/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Serializer/bundles.php
@@ -11,6 +11,6 @@
 
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 
-return array(
+return [
     new FrameworkBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Session/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Session/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Session/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Session/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Kernel/ConcreteMicroKernel.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Kernel/ConcreteMicroKernel.php
index 3c80e70220f7..c436d979c7c6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Kernel/ConcreteMicroKernel.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Kernel/ConcreteMicroKernel.php
@@ -49,9 +49,9 @@ public function dangerousAction()
 
     public function registerBundles()
     {
-        return array(
+        return [
             new FrameworkBundle(),
-        );
+        ];
     }
 
     public function getCacheDir()
@@ -79,9 +79,9 @@ protected function configureRoutes(RouteCollectionBuilder $routes)
     protected function configureContainer(ContainerBuilder $c, LoaderInterface $loader)
     {
         $c->register('logger', NullLogger::class);
-        $c->loadFromExtension('framework', array(
+        $c->loadFromExtension('framework', [
             'secret' => '$ecret',
-        ));
+        ]);
 
         $c->setParameter('halloween', 'Have a great day!');
         $c->register('halloween', 'stdClass')->setPublic(true);
@@ -92,9 +92,9 @@ protected function configureContainer(ContainerBuilder $c, LoaderInterface $load
      */
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             KernelEvents::EXCEPTION => 'onKernelException',
-        );
+        ];
     }
 }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RedirectableUrlMatcherTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RedirectableUrlMatcherTest.php
index b5f7a3bd4833..d87eee58ccb4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RedirectableUrlMatcherTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RedirectableUrlMatcherTest.php
@@ -26,7 +26,7 @@ public function testRedirectWhenNoSlash()
 
         $matcher = new RedirectableUrlMatcher($coll, $context = new RequestContext());
 
-        $this->assertEquals(array(
+        $this->assertEquals([
                 '_controller' => 'Symfony\Bundle\FrameworkBundle\Controller\RedirectController::urlRedirectAction',
                 'path' => '/foo/',
                 'permanent' => true,
@@ -34,7 +34,7 @@ public function testRedirectWhenNoSlash()
                 'httpPort' => $context->getHttpPort(),
                 'httpsPort' => $context->getHttpsPort(),
                 '_route' => 'foo',
-            ),
+            ],
             $matcher->match('/foo')
         );
     }
@@ -42,11 +42,11 @@ public function testRedirectWhenNoSlash()
     public function testSchemeRedirect()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['https']));
 
         $matcher = new RedirectableUrlMatcher($coll, $context = new RequestContext());
 
-        $this->assertEquals(array(
+        $this->assertEquals([
                 '_controller' => 'Symfony\Bundle\FrameworkBundle\Controller\RedirectController::urlRedirectAction',
                 'path' => '/foo',
                 'permanent' => true,
@@ -54,7 +54,7 @@ public function testSchemeRedirect()
                 'httpPort' => $context->getHttpPort(),
                 'httpsPort' => $context->getHttpsPort(),
                 '_route' => 'foo',
-            ),
+            ],
             $matcher->match('/foo')
         );
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
index ba5db79405cc..830909080975 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
@@ -25,12 +25,12 @@ public function testGenerateWithServiceParam()
 
         $routes->add('foo', new Route(
             ' /{_locale}',
-            array(
+            [
                 '_locale' => '%locale%',
-            ),
-            array(
+            ],
+            [
                 '_locale' => 'en|es',
-            ), array(
10000
), '', array(), array(), '"%foo%" == "bar"'
+            ], [], '', [], [], '"%foo%" == "bar"'
         ));
 
         $sc = $this->getServiceContainer($routes);
@@ -39,8 +39,8 @@ public function testGenerateWithServiceParam()
 
         $router = new Router($sc, 'foo');
 
-        $this->assertSame('/en', $router->generate('foo', array('_locale' => 'en')));
-        $this->assertSame('/', $router->generate('foo', array('_locale' => 'es')));
+        $this->assertSame('/en', $router->generate('foo', ['_locale' => 'en']));
+        $this->assertSame('/', $router->generate('foo', ['_locale' => 'es']));
         $this->assertSame('"bar" == "bar"', $router->getRouteCollection()->get('foo')->getCondition());
     }
 
@@ -50,15 +50,15 @@ public function testDefaultsPlaceholders()
 
         $routes->add('foo', new Route(
             '/foo',
-            array(
+            [
                 'foo' => 'before_%parameter.foo%',
                 'bar' => '%parameter.bar%_after',
                 'baz' => '%%escaped%%',
-                'boo' => array('%parameter%', '%%escaped_parameter%%', array('%bee_parameter%', 'bee')),
-                'bee' => array('bee', 'bee'),
-            ),
-            array(
-            )
+                'boo' => ['%parameter%', '%%escaped_parameter%%', ['%bee_parameter%', 'bee']],
+                'bee' => ['bee', 'bee'],
+            ],
+            [
+            ]
         ));
 
         $sc = $this->getServiceContainer($routes);
@@ -72,13 +72,13 @@ public function testDefaultsPlaceholders()
         $route = $router->getRouteCollection()->get('foo');
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'before_foo',
                 'bar' => 'bar_after',
                 'baz' => '%escaped%',
-                'boo' => array('boo', '%escaped_parameter%', array('foo_bee', 'bee')),
-                'bee' => array('bee', 'bee'),
-            ),
+                'boo' => ['boo', '%escaped_parameter%', ['foo_bee', 'bee']],
+                'bee' => ['bee', 'bee'],
+            ],
             $route->getDefaults()
         );
     }
@@ -89,13 +89,13 @@ public function testRequirementsPlaceholders()
 
         $routes->add('foo', new Route(
             '/foo',
-            array(
-            ),
-            array(
+            [
+            ],
+            [
                 'foo' => 'before_%parameter.foo%',
                 'bar' => '%parameter.bar%_after',
                 'baz' => '%%escaped%%',
-            )
+            ]
         ));
 
         $sc = $this->getServiceContainer($routes);
@@ -106,11 +106,11 @@ public function testRequirementsPlaceholders()
         $route = $router->getRouteCollection()->get('foo');
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'before_foo',
                 'bar' => 'bar_after',
                 'baz' => '%escaped%',
-            ),
+            ],
             $route->getRequirements()
         );
     }
@@ -207,7 +207,7 @@ public function testExceptionOnNonStringParameter()
     public function testDefaultValuesAsNonStrings($value)
     {
         $routes = new RouteCollection();
-        $routes->add('foo', new Route('foo', array('foo' => $value), array('foo' => '\d+')));
+        $routes->add('foo', new Route('foo', ['foo' => $value], ['foo' => '\d+']));
 
         $sc = $this->getServiceContainer($routes);
 
@@ -230,12 +230,12 @@ public function testGetRouteCollectionAddsContainerParametersResource()
 
         $routeCollection = $router->getRouteCollection();
 
-        $this->assertEquals(array(new ContainerParametersResource(array('locale' => 'en'))), $routeCollection->getResources());
+        $this->assertEquals([new ContainerParametersResource(['locale' => 'en'])], $routeCollection->getResources());
     }
 
     public function getNonStringValues()
     {
-        return array(array(null), array(false), array(true), array(new \stdClass()), array(array('foo', 'bar')), array(array(array())));
+        return [[null], [false], [true], [new \stdClass()], [['foo', 'bar']], [[[]]]];
     }
 
     /**
@@ -251,7 +251,7 @@ private function getServiceContainer(RouteCollection $routes)
             ->will($this->returnValue($routes))
         ;
 
-        $sc = $this->getMockBuilder('Symfony\\Component\\DependencyInjection\\Container')->setMethods(array('get'))->getMock();
+        $sc = $this->getMockBuilder('Symfony\\Component\\DependencyInjection\\Container')->setMethods(['get'])->getMock();
 
         $sc
             ->expects($this->once())
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/DelegatingEngineTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/DelegatingEngineTest.php
index e3ff92b874c0..73983e47ce36 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/DelegatingEngineTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/DelegatingEngineTest.php
@@ -19,12 +19,12 @@ class DelegatingEngineTest extends TestCase
 {
     public function testSupportsRetrievesEngineFromTheContainer()
     {
-        $container = $this->getContainerMock(array(
+        $container = $this->getContainerMock([
             'engine.first' => $this->getEngineMock('template.php', false),
             'engine.second' => $this->getEngineMock('template.php', true),
-        ));
+        ]);
 
-        $delegatingEngine = new DelegatingEngine($container, array('engine.first', 'engine.second'));
+        $delegatingEngine = new DelegatingEngine($container, ['engine.first', 'engine.second']);
 
         $this->assertTrue($delegatingEngine->supports('template.php'));
     }
@@ -33,12 +33,12 @@ public function testGetExistingEngine()
     {
         $firstEngine = $this->getEngineMock('template.php', false);
         $secondEngine = $this->getEngineMock('template.php', true);
-        $container = $this->getContainerMock(array(
+        $container = $this->getContainerMock([
             'engine.first' => $firstEngine,
             'engine.second' => $secondEngine,
-        ));
+        ]);
 
-        $delegatingEngine = new DelegatingEngine($container, array('engine.first', 'engine.second'));
+        $delegatingEngine = new DelegatingEngine($container, ['engine.first', 'engine.second']);
 
         $this->assertSame($secondEngine, $delegatingEngine->getEngine('template.php'));
     }
@@ -51,12 +51,12 @@ public function testGetInvalidEngine()
     {
         $firstEngine = $this->getEngineMock('template.php', false);
         $secondEngine = $this->getEngineMock('template.php', false);
-        $container = $this->getContainerMock(array(
+        $container = $this->getContainerMock([
             'engine.first' => $firstEngine,
             'engine.second' => $secondEngine,
-        ));
+        ]);
 
-        $delegatingEngine = new DelegatingEngine($container, array('engine.first', 'engine.second'));
+        $delegatingEngine = new DelegatingEngine($container, ['engine.first', 'engine.second']);
         $delegatingEngine->getEngine('template.php');
     }
 
@@ -66,22 +66,22 @@ public function testRenderResponseWithFrameworkEngine()
         $engine = $this->getFrameworkEngineMock('template.php', true);
         $engine->expects($this->once())
             ->method('renderResponse')
-            ->with('template.php', array('foo' => 'bar'))
+            ->with('template.php', ['foo' => 'bar'])
             ->will($this->returnValue($response));
-        $container = $this->getContainerMock(array('engine' => $engine));
+        $container = $this->getContainerMock(['engine' => $engine]);
 
-        $delegatingEngine = new DelegatingEngine($container, array('engine'));
+        $delegatingEngine = new DelegatingEngine($container, ['engine']);
 
-        $this->assertSame($response, $delegatingEngine->renderResponse('template.php', array('foo' => 'bar')));
+        $this->assertSame($response, $delegatingEngine->renderResponse('template.php', ['foo' => 'bar']));
     }
 
     public function testRenderResponseWithTemplatingEngine()
     {
         $engine = $this->getEngineMock('template.php', true);
-        $container = $this->getContainerMock(array('engine' => $engine));
-        $delegatingEngine = new DelegatingEngine($container, array('engine'));
+        $container = $this->getContainerMock(['engine' => $engine]);
+        $delegatingEngine = new DelegatingEngine($container, ['engine']);
 
-        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $delegatingEngine->renderResponse('template.php', array('foo' => 'bar')));
+        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $delegatingEngine->renderResponse('template.php', ['foo' => 'bar']));
     }
 
     private function getEngineMock($template, $supports)
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/GlobalVariablesTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/GlobalVariablesTest.php
index 348820b32122..d6c6b299ebc6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/GlobalVariablesTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/GlobalVariablesTest.php
@@ -93,14 +93,14 @@ public function getUserProvider()
         $std = new \stdClass();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
-        return array(
-            array($user, $user),
-            array($std, $std),
-            array($token, $token),
-            array('Anon.', null),
-            array(null, null),
-            array(10, null),
-            array(true, null),
-        );
+        return [
+            [$user, $user],
+            [$std, $std],
+            [$token, $token],
+            ['Anon.', null],
+            [null, null],
+            [10, null],
+            [true, null],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/AssetsHelperTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/AssetsHelperTest.php
index 01fac959db90..83df0640bfae 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/AssetsHelperTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/AssetsHelperTest.php
@@ -26,7 +26,7 @@ protected function setUp()
         $fooPackage = new Package(new StaticVersionStrategy('42', '%s?v=%s'));
         $barPackage = new Package(new StaticVersionStrategy('22', '%s?%s'));
 
-        $packages = new Packages($fooPackage, array('bar' => $barPackage));
+        $packages = new Packages($fooPackage, ['bar' => $barPackage]);
 
         $this->helper = new AssetsHelper($packages);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Fixtures/StubTranslator.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Fixtures/StubTranslator.php
index 17d1fd4fc637..53a77f24ccb4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Fixtures/StubTranslator.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Fixtures/StubTranslator.php
@@ -15,12 +15,12 @@
 
 class StubTranslator implements TranslatorInterface
 {
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         return '[trans]'.$id.'[/trans]';
     }
 
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         return '[trans]'.$id.'[/trans]';
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperDivLayoutTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperDivLayoutTest.php
index e655250dbfd7..7e8d8f097215 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperDivLayoutTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperDivLayoutTest.php
@@ -35,19 +35,19 @@ protected function getExtensions()
         $root = realpath(\dirname($reflClass->getFileName()).'/Resources/views');
         $rootTheme = realpath(__DIR__.'/Resources');
         $templateNameParser = new StubTemplateNameParser($root, $rootTheme);
-        $loader = new FilesystemLoader(array());
+        $loader = new FilesystemLoader([]);
 
         $this->engine = new PhpEngine($templateNameParser, $loader);
         $this->engine->addGlobal('global', '');
-        $this->engine->setHelpers(array(
+        $this->engine->setHelpers([
             new TranslatorHelper(new StubTranslator()),
-        ));
+        ]);
 
-        return array_merge(parent::getExtensions(), array(
-            new TemplatingExtension($this->engine, $this->csrfTokenManager, array(
+        return array_merge(parent::getExtensions(), [
+            new TemplatingExtension($this->engine, $this->csrfTokenManager, [
                 'FrameworkBundle:Form',
-            )),
-        ));
+            ]),
+        ]);
     }
 
     protected function tearDown()
@@ -59,10 +59,10 @@ protected function tearDown()
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -71,10 +71,10 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -93,12 +93,12 @@ public function testMoneyWidgetInIso()
         $this->assertSame('&euro; <input type="text" id="name" name="name" required="required" />', $this->renderWidget($view));
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->form($view, $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         return (string) $this->engine->get('form')->label($view, $label, $vars);
     }
@@ -108,27 +108,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->engine->get('form')->errors($view);
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->widget($view, $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->row($view, $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->rest($view, $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->start($view, $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->end($view, $vars);
     }
@@ -140,15 +140,15 @@ protected function setTheme(FormView $view, array $themes, $useDefaultThemes = t
 
     public static function themeBlockInheritanceProvider()
     {
-        return array(
-            array(array('TestBundle:Parent')),
-        );
+        return [
+            [['TestBundle:Parent']],
+        ];
     }
 
     public static function themeInheritanceProvider()
     {
-        return array(
-            array(array('TestBundle:Parent'), array('TestBundle:Child')),
-        );
+        return [
+            [['TestBundle:Parent'], ['TestBundle:Child']],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperTableLayoutTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperTableLayoutTest.php
index 46c20110c7f0..fc5e7d17f378 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperTableLayoutTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperTableLayoutTest.php
@@ -29,10 +29,10 @@ class FormHelperTableLayoutTest extends AbstractTableLayoutTest
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -41,10 +41,10 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -59,20 +59,20 @@ protected function getExtensions()
         $root = realpath(\dirname($reflClass->getFileName()).'/Resources/views');
         $rootTheme = realpath(__DIR__.'/Resources');
         $templateNameParser = new StubTemplateNameParser($root, $rootTheme);
-        $loader = new FilesystemLoader(array());
+        $loader = new FilesystemLoader([]);
 
         $this->engine = new PhpEngine($templateNameParser, $loader);
         $this->engine->addGlobal('global', '');
-        $this->engine->setHelpers(array(
+        $this->engine->setHelpers([
             new TranslatorHelper(new StubTranslator()),
-        ));
+        ]);
 
-        return array_merge(parent::getExtensions(), array(
-            new TemplatingExtension($this->engine, $this->csrfTokenManager, array(
+        return array_merge(parent::getExtensions(), [
+            new TemplatingExtension($this->engine, $this->csrfTokenManager, [
                 'FrameworkBundle:Form',
                 'FrameworkBundle:FormTable',
-            )),
-        ));
+            ]),
+        ]);
     }
 
     protected function tearDown()
@@ -82,12 +82,12 @@ protected function tearDown()
         parent::tearDown();
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->form($view, $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         return (string) $this->engine->get('form')->label($view, $label, $vars);
     }
@@ -97,27 +97,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->engine->get('form')->errors($view);
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->widget($view, $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->row($view, $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->rest($view, $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->start($view, $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->end($view, $vars);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/RequestHelperTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/RequestHelperTest.php
index 6795bc1a598f..a2068ae75774 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/RequestHelperTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/RequestHelperTest.php
@@ -24,7 +24,7 @@ protected function setUp()
     {
         $this->requestStack = new RequestStack();
         $request = new Request();
-        $request->initialize(array('foobar' => 'bar'));
+        $request->initialize(['foobar' => 'bar']);
         $this->requestStack->push($request);
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/SessionHelperTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/SessionHelperTest.php
index c0fc0ba0bbc6..06984095f1a4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/SessionHelperTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/SessionHelperTest.php
@@ -47,13 +47,13 @@ public function testFlash()
 
         $this->assertTrue($helper->hasFlash('notice'));
 
-        $this->assertEquals(array('bar'), $helper->getFlash('notice'));
+        $this->assertEquals(['bar'], $helper->getFlash('notice'));
     }
 
     public function testGetFlashes()
     {
         $helper = new SessionHelper($this->requestStack);
-        $this->assertEquals(array('notice' => array('bar')), $helper->getFlashes());
+        $this->assertEquals(['notice' => ['bar']], $helper->getFlashes());
     }
 
     public function testGet()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Loader/TemplateLocatorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Loader/TemplateLocatorTest.php
index 37ea5b484b6e..3317b15d9091 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Loader/TemplateLocatorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Loader/TemplateLocatorTest.php
@@ -90,8 +90,8 @@ protected function getFileLocator()
     {
         return $this
             ->getMockBuilder('Symfony\Component\Config\FileLocator')
-            ->setMethods(array('locate'))
-            ->setConstructorArgs(array('/path/to/fallback'))
+            ->setMethods(['locate'])
+            ->setConstructorArgs(['/path/to/fallback'])
             ->getMock()
         ;
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateFilenameParserTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateFilenameParserTest.php
index eedbcd27df3a..3c44612b8763 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateFilenameParserTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateFilenameParserTest.php
@@ -45,12 +45,12 @@ public function testParseFromFilename($file, $ref)
 
     public function getFilenameToTemplateProvider()
     {
-        return array(
-            array('/path/to/section/name.format.engine', new TemplateReference('', '/path/to/section', 'name', 'format', 'engine')),
-            array('\\path\\to\\section\\name.format.engine', new TemplateReference('', '/path/to/section', 'name', 'format', 'engine')),
-            array('name.format.engine', new TemplateReference('', '', 'name', 'format', 'engine')),
-            array('name.format', false),
-            array('name', false),
-        );
+        return [
+            ['/path/to/section/name.format.engine', new TemplateReference('', '/path/to/section', 'name', 'format', 'engine')],
+            ['\\path\\to\\section\\name.format.engine', new TemplateReference('', '/path/to/section', 'name', 'format', 'engine')],
+            ['name.format.engine', new TemplateReference('', '', 'name', 'format', 'engine')],
+            ['name.format', false],
+            ['name', false],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
index e5958e2dd14b..85e4917548db 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
@@ -27,7 +27,7 @@ protected function setUp()
             ->expects($this->any())
             ->method('getBundle')
             ->will($this->returnCallback(function ($bundle) {
-                if (\in_array($bundle, array('SensioFooBundle', 'SensioCmsFooBundle', 'FooBundle'))) {
+                if (\in_array($bundle, ['SensioFooBundle', 'SensioCmsFooBundle', 'FooBundle'])) {
                     return true;
                 }
 
@@ -56,22 +56,22 @@ public function testParse($name, $logicalName, $path, $ref)
 
     public function parseProvider()
     {
-        return array(
-            array('FooBundle:Post:index.html.php', 'FooBundle:Post:index.html.php', '@FooBundle/Resources/views/Post/index.html.php', new TemplateReference('FooBundle', 'Post', 'index', 'html', 'php')),
-            array('FooBundle:Post:index.html.twig', 'FooBundle:Post:index.html.twig', '@FooBundle/Resources/views/Post/index.html.twig', new TemplateReference('FooBundle', 'Post', 'index', 'html', 'twig')),
-            array('FooBundle:Post:index.xml.php', 'FooBundle:Post:index.xml.php', '@FooBundle/Resources/views/Post/index.xml.php', new TemplateReference('FooBundle', 'Post', 'index', 'xml', 'php')),
-            array('SensioFooBundle:Post:index.html.php', 'SensioFooBundle:Post:index.html.php', '@SensioFooBundle/Resources/views/Post/index.html.php', new TemplateReference('SensioFooBundle', 'Post', 'index', 'html', 'php')),
-            array('SensioCmsFooBundle:Post:index.html.php', 'SensioCmsFooBundle:Post:index.html.php', '@SensioCmsFooBundle/Resources/views/Post/index.html.php', new TemplateReference('SensioCmsFooBundle', 'Post', 'index', 'html', 'php')),
-            array(':Post:index.html.php', ':Post:index.html.php', 'views/Post/index.html.php', new TemplateReference('', 'Post', 'index', 'html', 'php')),
-            array('::index.html.php', '::index.html.php', 'views/index.html.php', new TemplateReference('', '', 'index', 'html', 'php')),
-            array('index.html.php', '::index.html.php', 'views/index.html.php', new TemplateReference('', '', 'index', 'html', 'php')),
-            array('FooBundle:Post:foo.bar.index.html.php', 'FooBundle:Post:foo.bar.index.html.php', '@FooBundle/Resources/views/Post/foo.bar.index.html.php', new TemplateReference('FooBundle', 'Post', 'foo.bar.index', 'html', 'php')),
-            array('@FooBundle/Resources/views/layout.html.twig', '@FooBundle/Resources/views/layout.html.twig', '@FooBundle/Resources/views/layout.html.twig', new BaseTemplateReference('@FooBundle/Resources/views/layout.html.twig', 'twig')),
-            array('@FooBundle/Foo/layout.html.twig', '@FooBundle/Foo/layout.html.twig', '@FooBundle/Foo/layout.html.twig', new BaseTemplateReference('@FooBundle/Foo/layout.html.twig', 'twig')),
-            array('name.twig', 'name.twig', 'name.twig', new BaseTemplateReference('name.twig', 'twig')),
-            array('name', 'name', 'name', new BaseTemplateReference('name')),
-            array('default/index.html.php', '::default/index.html.php', 'views/default/index.html.php', new TemplateReference(null, null, 'default/index', 'html', 'php')),
-        );
+        return [
+            ['FooBundle:Post:index.html.php', 'FooBundle:Post:index.html.php', '@FooBundle/Resources/views/Post/index.html.php', new TemplateReference('FooBundle', 'Post', 'index', 'html', 'php')],
+            ['FooBundle:Post:index.html.twig', 'FooBundle:Post:index.html.twig', '@FooBundle/Resources/views/Post/index.html.twig', new TemplateReference('FooBundle', 'Post', 'index', 'html', 'twig')],
+            ['FooBundle:Post:index.xml.php', 'FooBundle:Post:index.xml.php', '@FooBundle/Resources/views/Post/index.xml.php', new TemplateReference('FooBundle', 'Post', 'index', 'xml', 'php')],
+            ['SensioFooBundle:Post:index.html.php', 'SensioFooBundle:Post:index.html.php', '@SensioFooBundle/Resources/views/Post/index.html.php', new TemplateReference('SensioFooBundle', 'Post', 'index', 'html', 'php')],
+            ['SensioCmsFooBundle:Post:index.html.php', 'SensioCmsFooBundle:Post:index.html.php', '@SensioCmsFooBundle/Resources/views/Post/index.html.php', new TemplateReference('SensioCmsFooBundle', 'Post', 'index', 'html', 'php')],
+            [':Post:index.html.php', ':Post:index.html.php', 'views/Post/index.html.php', new TemplateReference('', 'Post', 'index', 'html', 'php')],
+            ['::index.html.php', '::index.html.php', 'views/index.html.php', new TemplateReference('', '', 'index', 'html', 'php')],
+            ['index.html.php', '::index.html.php', 'views/index.html.php', new TemplateReference('', '', 'index', 'html', 'php')],
+            ['FooBundle:Post:foo.bar.index.html.php', 'FooBundle:Post:foo.bar.index.html.php', '@FooBundle/Resources/views/Post/foo.bar.index.html.php', new TemplateReference('FooBundle', 'Post', 'foo.bar.index', 'html', 'php')],
+            ['@FooBundle/Resources/views/layout.html.twig', '@FooBundle/Resources/views/layout.html.twig', '@FooBundle/Resources/views/layout.html.twig', new BaseTemplateReference('@FooBundle/Resources/views/layout.html.twig', 'twig')],
+            ['@FooBundle/Foo/layout.html.twig', '@FooBundle/Foo/layout.html.twig', '@FooBundle/Foo/layout.html.twig', new BaseTemplateReference('@FooBundle/Foo/layout.html.twig', 'twig')],
+            ['name.twig', 'name.twig', 'name.twig', new BaseTemplateReference('name.twig', 'twig')],
+            ['name', 'name', 'name', new BaseTemplateReference('name')],
+            ['default/index.html.php', '::default/index.html.php', 'views/default/index.html.php', new TemplateReference(null, null, 'default/index', 'html', 'php')],
+        ];
     }
 
     /**
@@ -98,12 +98,12 @@ public function testAbsolutePathsAreDeprecated($name, $logicalName, $path, $ref)
 
     public function provideAbsolutePaths()
     {
-        return array(
-            array('/path/to/section/index.html.php', '/path/to/section/index.html.php', '/path/to/section/index.html.php', new BaseTemplateReference('/path/to/section/index.html.php', 'php')),
-            array('C:\\path\\to\\section\\name.html.php', 'C:path/to/section/name.html.php', 'C:path/to/section/name.html.php', new BaseTemplateReference('C:path/to/section/name.html.php', 'php')),
-            array('C:\\path\\to\\section\\name:foo.html.php', 'C:path/to/section/name:foo.html.php', 'C:path/to/section/name:foo.html.php', new BaseTemplateReference('C:path/to/section/name:foo.html.php', 'php')),
-            array('\\path\\to\\section\\name.html.php', '/path/to/section/name.html.php', '/path/to/section/name.html.php', new BaseTemplateReference('/path/to/section/name.html.php', 'php')),
-            array('/path/to/section/name.php', '/path/to/section/name.php', '/path/to/section/name.php', new BaseTemplateReference('/path/to/section/name.php', 'php')),
-        );
+        return [
+            ['/path/to/section/index.html.php', '/path/to/section/index.html.php', '/path/to/section/index.html.php', new BaseTemplateReference('/path/to/section/index.html.php', 'php')],
+            ['C:\\path\\to\\section\\name.html.php', 'C:path/to/section/name.html.php', 'C:path/to/section/name.html.php', new BaseTemplateReference('C:path/to/section/name.html.php', 'php')],
+            ['C:\\path\\to\\section\\name:foo.html.php', 'C:path/to/section/name:foo.html.php', 'C:path/to/section/name:foo.html.php', new BaseTemplateReference('C:path/to/section/name:foo.html.php', 'php')],
+            ['\\path\\to\\section\\name.html.php', '/path/to/section/name.html.php', '/path/to/section/name.html.php', new BaseTemplateReference('/path/to/section/name.html.php', 'php')],
+            ['/path/to/section/name.php', '/path/to/section/name.php', '/path/to/section/name.php', new BaseTemplateReference('/path/to/section/name.php', 'php')],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateTest.php
index 0321d0532f12..66872049ad99 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateTest.php
@@ -26,11 +26,11 @@ public function testGetPathForTemplate($template, $path)
 
     public function getTemplateToPathProvider()
     {
-        return array(
-            array(new TemplateReference('FooBundle', 'Post', 'index', 'html', 'php'), '@FooBundle/Resources/views/Post/index.html.php'),
-            array(new TemplateReference('FooBundle', '', 'index', 'html', 'twig'), '@FooBundle/Resources/views/index.html.twig'),
-            array(new TemplateReference('', 'Post', 'index', 'html', 'php'), 'views/Post/index.html.php'),
-            array(new TemplateReference('', '', 'index', 'html', 'php'), 'views/index.html.php'),
-        );
+        return [
+            [new TemplateReference('FooBundle', 'Post', 'index', 'html', 'php'), '@FooBundle/Resources/views/Post/index.html.php'],
+            [new TemplateReference('FooBundle', '', 'index', 'html', 'twig'), '@FooBundle/Resources/views/index.html.twig'],
+            [new TemplateReference('', 'Post', 'index', 'html', 'php'), 'views/Post/index.html.php'],
+            [new TemplateReference('', '', 'index', 'html', 'php'), 'views/index.html.php'],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/PhpExtractorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/PhpExtractorTest.php
index ca45f43329a2..c19c1567d91f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/PhpExtractorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/PhpExtractorTest.php
@@ -42,8 +42,8 @@ public function testExtraction($resource)
 nowdoc key with whitespace and nonescaped \$\n sequences
 EOF;
         // Assert
-        $expectedCatalogue = array(
-            'messages' => array(
+        $expectedCatalogue = [
+            'messages' => [
                 'single-quoted key' => 'prefixsingle-quoted key',
                 'double-quoted key' => 'prefixdouble-quoted key',
                 'heredoc key' => 'prefixheredoc key',
@@ -54,8 +54,8 @@ public function testExtraction($resource)
                 $expectedHeredoc => 'prefix'.$expectedHeredoc,
                 $expectedNowdoc => 'prefix'.$expectedNowdoc,
                 '{0} There is no apples|{1} There is one apple|]1,Inf[ There are %count% apples' => 'prefix{0} There is no apples|{1} There is one apple|]1,Inf[ There are %count% apples',
-            ),
-            'not_messages' => array(
+            ],
+            'not_messages' => [
                 'other-domain-test-no-params-short-array' => 'prefixother-domain-test-no-params-short-array',
                 'other-domain-test-no-params-long-array' => 'prefixother-domain-test-no-params-long-array',
                 'other-domain-test-params-short-array' => 'prefixother-domain-test-params-short-array',
@@ -65,8 +65,8 @@ public function testExtraction($resource)
                 'typecast' => 'prefixtypecast',
                 'msg1' => 'prefixmsg1',
                 'msg2' => 'prefixmsg2',
-            ),
-        );
+            ],
+        ];
         $actualCatalogue = $catalogue->all();
 
         $this->assertEquals($expectedCatalogue, $actualCatalogue);
@@ -75,7 +75,7 @@ public function testExtraction($resource)
     public function resourcesProvider()
     {
         $directory = __DIR__.'/../Fixtures/Resources/views/';
-        $splFiles = array();
+        $splFiles = [];
         foreach (new \DirectoryIterator($directory) as $fileInfo) {
             if ($fileInfo->isDot()) {
                 continue;
@@ -86,13 +86,13 @@ public function resourcesProvider()
             $splFiles[] = $fileInfo->getFileInfo();
         }
 
-        return array(
-            array($directory),
-            array($phpFile),
-            array(glob($directory.'*')),
-            array($splFiles),
-            array(new \ArrayObject(glob($directory.'*'))),
-            array(new \ArrayObject($splFiles)),
-        );
+        return [
+            [$directory],
+            [$phpFile],
+            [glob($directory.'*')],
+            [$splFiles],
+            [new \ArrayObject(glob($directory.'*'))],
+            [new \ArrayObject($splFiles)],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
index 08b4407a8a52..aff109368b23 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
@@ -49,9 +49,9 @@ protected function deleteTmpDir()
      */
     public function testTransWithoutCachingOmittingLocale()
     {
-        $translator = $this->getTranslator($this->getLoader(), array(), 'loader', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
+        $translator = $this->getTranslator($this->getLoader(), [], 'loader', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -71,9 +71,9 @@ public function testTransWithoutCachingOmittingLocale()
     public function testTransWithCachingOmittingLocale()
     {
         // prime the cache
-        $translator = $this->getTranslator($this->getLoader(), array('cache_dir' => $this->tmpDir), 'loader', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
+        $translator = $this->getTranslator($this->getLoader(), ['cache_dir' => $this->tmpDir], 'loader', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -89,9 +89,9 @@ public function testTransWithCachingOmittingLocale()
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
         $loader->expects($this->never())->method('load');
 
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir), 'loader', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir], 'loader', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -112,7 +112,7 @@ public function testTransWithCachingOmittingLocale()
     public function testTransWithCachingWithInvalidLocaleOmittingLocale()
     {
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir), 'loader', '\Symfony\Bundle\FrameworkBundle\Tests\Translation\TranslatorWithInvalidLocale', null);
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir], 'loader', '\Symfony\Bundle\FrameworkBundle\Tests\Translation\TranslatorWithInvalidLocale', null);
 
         $translator->trans('foo');
     }
@@ -124,13 +124,13 @@ public function testTransWithCachingWithInvalidLocaleOmittingLocale()
     public function testLoadResourcesWithoutCachingOmittingLocale()
     {
         $loader = new \Symfony\Component\Translation\Loader\YamlFileLoader();
-        $resourceFiles = array(
-            'fr' => array(
+        $resourceFiles = [
+            'fr' => [
                 __DIR__.'/../Fixtures/Resources/translations/messages.fr.yml',
-            ),
-        );
+            ],
+        ];
 
-        $translator = $this->getTranslator($loader, array('resource_files' => $resourceFiles), 'yml', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
+        $translator = $this->getTranslator($loader, ['resource_files' => $resourceFiles], 'yml', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
         $translator->setLocale('fr');
 
         $this->assertEquals('répertoire', $translator->trans('folder'));
@@ -172,15 +172,15 @@ public function testGetDefaultLocaleOmittingLocaleWithPsrContainer()
     public function testWarmupOmittingLocale()
     {
         $loader = new \Symfony\Component\Translation\Loader\YamlFileLoader();
-        $resourceFiles = array(
-            'fr' => array(
+        $resourceFiles = [
+            'fr' => [
                 __DIR__.'/../Fixtures/Resources/translations/messages.fr.yml',
-            ),
-        );
+            ],
+        ];
 
         // prime the cache
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles), 'yml', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
-        $translator->setFallbackLocales(array('fr'));
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles], 'yml', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
+        $translator->setFallbackLocales(['fr']);
         $translator->warmup($this->tmpDir);
 
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
@@ -188,9 +188,9 @@ public function testWarmupOmittingLocale()
             ->expects($this->never())
             ->method('load');
 
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles), 'yml', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles], 'yml', '\Symfony\Bundle\FrameworkBundle\Translation\Translator', null);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('fr'));
+        $translator->setFallbackLocales(['fr']);
         $this->assertEquals('répertoire', $translator->trans('folder'));
     }
 
@@ -198,7 +198,7 @@ public function testTransWithoutCaching()
     {
         $translator = $this->getTranslator($this->getLoader());
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -214,9 +214,9 @@ public function testTransWithoutCaching()
     public function testTransWithCaching()
     {
         // prime the cache
-        $translator = $this->getTranslator($this->getLoader(), array('cache_dir' => $this->tmpDir));
+        $translator = $this->getTranslator($this->getLoader(), ['cache_dir' => $this->tmpDir]);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -232,9 +232,9 @@ public function testTransWithCaching()
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
         $loader->expects($this->never())->method('load');
 
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir));
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir]);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -254,7 +254,7 @@ public function testTransWithCaching()
     public function testTransWithCachingWithInvalidLocale()
     {
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir), 'loader', '\Symfony\Bundle\FrameworkBundle\Tests\Translation\TranslatorWithInvalidLocale');
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir], 'loader', '\Symfony\Bundle\FrameworkBundle\Tests\Translation\TranslatorWithInvalidLocale');
 
         $translator->trans('foo');
     }
@@ -262,13 +262,13 @@ public function testTransWithCachingWithInvalidLocale()
     public function testLoadResourcesWithoutCaching()
     {
         $loader = new \Symfony\Component\Translation\Loader\YamlFileLoader();
-        $resourceFiles = array(
-            'fr' => array(
+        $resourceFiles = [
+            'fr' => [
                 __DIR__.'/../Fixtures/Resources/translations/messages.fr.yml',
-            ),
-        );
+            ],
+        ];
 
-        $translator = $this->getTranslator($loader, array('resource_files' => $resourceFiles), 'yml');
+        $translator = $this->getTranslator($loader, ['resource_files' => $resourceFiles], 'yml');
         $translator->setLocale('fr');
 
         $this->assertEquals('répertoire', $translator->trans('folder'));
@@ -290,13 +290,13 @@ public function testInvalidOptions()
     {
         $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerInterface')->getMock();
 
-        (new Translator($container, new MessageFormatter(), 'en', array(), array('foo' => 'bar')));
+        (new Translator($container, new MessageFormatter(), 'en', [], ['foo' => 'bar']));
     }
 
     /** @dataProvider getDebugModeAndCacheDirCombinations */
     public function testResourceFilesOptionLoadsBeforeOtherAddedResources($debug, $enableCache)
     {
-        $someCatalogue = $this->getCatalogue('some_locale', array());
+        $someCatalogue = $this->getCatalogue('some_locale', []);
 
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
 
@@ -312,10 +312,10 @@ public function testResourceFilesOptionLoadsBeforeOtherAddedResources($debug, $e
             ->with('second_resource.some_locale.loader', 'some_locale', 'messages')
             ->willReturn($someCatalogue);
 
-        $options = array(
-            'resource_files' => array('some_locale' => array('messages.some_locale.loader')),
+        $options = [
+            'resource_files' => ['some_locale' => ['messages.some_locale.loader']],
             'debug' => $debug,
-        );
+        ];
 
         if ($enableCache) {
             $options['cache_dir'] = $this->tmpDir;
@@ -325,20 +325,20 @@ public function testResourceFilesOptionLoadsBeforeOtherAddedResources($debug, $e
         $translator = $this->createTranslator($loader, $options);
         $translator->addResource('loader', 'second_resource.some_locale.loader', 'some_locale', 'messages');
 
-        $translator->trans('some_message', array(), null, 'some_locale');
+        $translator->trans('some_message', [], null, 'some_locale');
     }
 
     public function getDebugModeAndCacheDirCombinations()
     {
-        return array(
-            array(false, false),
-            array(true, false),
-            array(false, true),
-            array(true, true),
-        );
+        return [
+            [false, false],
+            [true, false],
+            [false, true],
+            [true, true],
+        ];
     }
 
-    protected function getCatalogue($locale, $messages, $resources = array())
+    protected function getCatalogue($locale, $messages, $resources = [])
     {
         $catalogue = new MessageCatalogue($locale);
         foreach ($messages as $key => $translation) {
@@ -357,53 +357,53 @@ protected function getLoader()
         $loader
             ->expects($this->at(0))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('fr', array(
+            ->will($this->returnValue($this->getCatalogue('fr', [
                 'foo' => 'foo (FR)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(1))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('en', array(
+            ->will($this->returnValue($this->getCatalogue('en', [
                 'foo' => 'foo (EN)',
                 'bar' => 'bar (EN)',
                 'choice' => '{0} choice 0 (EN)|{1} choice 1 (EN)|]1,Inf] choice inf (EN)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(2))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('es', array(
+            ->will($this->returnValue($this->getCatalogue('es', [
                 'foobar' => 'foobar (ES)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(3))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('pt-PT', array(
+            ->will($this->returnValue($this->getCatalogue('pt-PT', [
                 'foobarfoo' => 'foobarfoo (PT-PT)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(4))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('pt_BR', array(
+            ->will($this->returnValue($this->getCatalogue('pt_BR', [
                 'other choice' => '{0} other choice 0 (PT-BR)|{1} other choice 1 (PT-BR)|]1,Inf] other choice inf (PT-BR)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(5))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('fr.UTF-8', array(
+            ->will($this->returnValue($this->getCatalogue('fr.UTF-8', [
                 'foobarbaz' => 'foobarbaz (fr.UTF-8)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(6))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('sr@latin', array(
+            ->will($this->returnValue($this->getCatalogue('sr@latin', [
                 'foobarbax' => 'foobarbax (sr@latin)',
-            ))))
+            ])))
         ;
 
         return $loader;
@@ -421,7 +421,7 @@ protected function getContainer($loader)
         return $container;
     }
 
-    public function getTranslator($loader, $options = array(), $loaderFomat = 'loader', $translatorClass = '\Symfony\Bundle\FrameworkBundle\Translation\Translator', $defaultLocale = 'en')
+    public function getTranslator($loader, $options = [], $loaderFomat = 'loader', $translatorClass = '\Symfony\Bundle\FrameworkBundle\Translation\Translator', $defaultLocale = 'en')
     {
         $translator = $this->createTranslator($loader, $options, $translatorClass, $loaderFomat, $defaultLocale);
 
@@ -441,15 +441,15 @@ public function getTranslator($loader, $options = array(), $loaderFomat = 'loade
     public function testWarmup()
     {
         $loader = new \Symfony\Component\Translation\Loader\YamlFileLoader();
-        $resourceFiles = array(
-            'fr' => array(
+        $resourceFiles = [
+            'fr' => [
                 __DIR__.'/../Fixtures/Resources/translations/messages.fr.yml',
-            ),
-        );
+            ],
+        ];
 
         // prime the cache
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles), 'yml');
-        $translator->setFallbackLocales(array('fr'));
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles], 'yml');
+        $translator->setFallbackLocales(['fr']);
         $translator->warmup($this->tmpDir);
 
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
@@ -457,9 +457,9 @@ public function testWarmup()
             ->expects($this->never())
             ->method('load');
 
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles), 'yml');
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles], 'yml');
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('fr'));
+        $translator->setFallbackLocales(['fr']);
         $this->assertEquals('répertoire', $translator->trans('folder'));
     }
 
@@ -469,7 +469,7 @@ private function createTranslator($loader, $options, $translatorClass = '\Symfon
             return new $translatorClass(
                 $this->getContainer($loader),
                 new MessageFormatter(),
-                array($loaderFomat => array($loaderFomat)),
+                [$loaderFomat => [$loaderFomat]],
                 $options
             );
         }
@@ -478,7 +478,7 @@ private function createTranslator($loader, $options, $translatorClass = '\Symfon
             $this->getContainer($loader),
             new MessageFormatter(),
             $defaultLocale,
-            array($loaderFomat => array($loaderFomat)),
+            [$loaderFomat => [$loaderFomat]],
             $options
         );
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Validator/ConstraintValidatorFactoryTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Validator/ConstraintValidatorFactoryTest.php
index f82c3f450d4c..864bd3c3bab7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Validator/ConstraintValidatorFactoryTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Validator/ConstraintValidatorFactoryTest.php
@@ -55,7 +55,7 @@ public function testGetInstanceReturnsServiceWithAlias()
         $container = new Container();
         $container->set('validator_constraint_service', $validator);
 
-        $factory = new ConstraintValidatorFactory($container, array('validator_constraint_alias' => 'validator_constraint_service'));
+        $factory = new ConstraintValidatorFactory($container, ['validator_constraint_alias' => 'validator_constraint_service']);
         $this->assertSame($validator, $factory->getInstance(new ConstraintAliasStub()));
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php b/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
index a1438f60ec63..b76a221c8352 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
@@ -28,11 +28,11 @@ class Translator extends BaseTranslator implements WarmableInterface
     protected $container;
     protected $loaderIds;
 
-    protected $options = array(
+    protected $options = [
         'cache_dir' => null,
         'debug' => false,
-        'resource_files' => array(),
-    );
+        'resource_files' => [],
+    ];
 
     /**
      * @var array
@@ -45,7 +45,7 @@ class Translator extends BaseTranslator implements WarmableInterface
      *
      * @var array
      */
-    private $resources = array();
+    private $resources = [];
 
     /**
      * Constructor.
@@ -64,7 +64,7 @@ class Translator extends BaseTranslator implements WarmableInterface
      *
      * @throws InvalidArgumentException
      */
-    public function __construct(ContainerInterface $container, $formatter, $defaultLocale = null, array $loaderIds = array(), array $options = array())
+    public function __construct(ContainerInterface $container, $formatter, $defaultLocale = null, array $loaderIds = [], array $options = [])
     {
         // BC 3.x, to be removed in 4.0 along with the $defaultLocale default value
         if (\is_array($defaultLocale) || 3 > \func_num_args()) {
@@ -103,7 +103,7 @@ public function warmUp($cacheDir)
             return;
         }
 
-        $locales = array_merge($this->getFallbackLocales(), array($this->getLocale()), $this->resourceLocales);
+        $locales = array_merge($this->getFallbackLocales(), [$this->getLocale()], $this->resourceLocales);
         foreach (array_unique($locales) as $locale) {
             // reset catalogue in case it's already loaded during the dump of the other locales.
             if (isset($this->catalogues[$locale])) {
@@ -116,7 +116,7 @@ public function warmUp($cacheDir)
 
     public function addResource($format, $resource, $locale, $domain = null)
     {
-        $this->resources[] = array($format, $resource, $locale, $domain);
+        $this->resources[] = [$format, $resource, $locale, $domain];
     }
 
     /**
@@ -134,7 +134,7 @@ protected function initialize()
             list($format, $resource, $locale, $domain) = $params;
             parent::addResource($format, $resource, $locale, $domain);
         }
-        $this->resources = array();
+        $this->resources = [];
 
         foreach ($this->loaderIds as $id => $aliases) {
             foreach ($aliases as $alias) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Validator/ConstraintValidatorFactory.php b/src/Symfony/Bundle/FrameworkBundle/Validator/ConstraintValidatorFactory.php
index 78eb6b067af5..b862de487a35 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Validator/ConstraintValidatorFactory.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Validator/ConstraintValidatorFactory.php
@@ -47,7 +47,7 @@ class ConstraintValidatorFactory extends ContainerConstraintValidatorFactory
     protected $container;
     protected $validators;
 
-    public function __construct(ContainerInterface $container, array $validators = array())
+    public function __construct(ContainerInterface $container, array $validators = [])
     {
         parent::__construct($container);
 
diff --git a/src/Symfony/Bundle/SecurityBundle/Command/SetAclCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/SetAclCommand.php
index 9ef14ec5a55c..49492e01dd86 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/SetAclCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/SetAclCommand.php
@@ -125,7 +125,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         }
 
         // Parse arguments
-        $objectIdentities = array();
+        $objectIdentities = [];
         $maskBuilder = $this->getMaskBuilder();
         foreach ($input->getArgument('arguments') as $argument) {
             $data = explode(':', $argument, 2);
@@ -149,7 +149,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         }
 
         // Create security identities
-        $securityIdentities = array();
+        $securityIdentities = [];
 
         if ($userOption) {
             foreach ($userOption as $user) {
diff --git a/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
index 9173a32a6d91..6ce92044c7f4 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
@@ -39,7 +39,7 @@ class UserPasswordEncoderCommand extends ContainerAwareCommand
     private $encoderFactory;
     private $userClasses;
 
-    public function __construct(EncoderFactoryInterface $encoderFactory = null, array $userClasses = array())
+    public function __construct(EncoderFactoryInterface $encoderFactory = null, array $userClasses = [])
     {
         if (null === $encoderFactory) {
             @trigger_error(sprintf('Passing null as the first argument of "%s()" is deprecated since Symfony 3.3 and support for it will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
@@ -152,14 +152,14 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $encodedPassword = $encoder->encodePassword($password, $salt);
 
-        $rows = array(
-            array('Encoder used', \get_class($encoder)),
-            array('Encoded password', $encodedPassword),
-        );
+        $rows = [
+            ['Encoder used', \get_class($encoder)],
+            ['Encoded password', $encodedPassword],
+        ];
         if (!$emptySalt) {
-            $rows[] = array('Generated salt', $salt);
+            $rows[] = ['Generated salt', $salt];
         }
-        $io->table(array('Key', 'Value'), $rows);
+        $io->table(['Key', 'Value'], $rows);
 
         if (!$emptySalt) {
             $errorIo->note(sprintf('Make sure that your salt storage field fits the salt length: %s chars', \strlen($salt)));
diff --git a/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php b/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
index 7e06440bd3f7..937b34e42ae4 100644
--- a/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
+++ b/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
@@ -60,7 +60,7 @@ public function __construct(TokenStorageInterface $tokenStorage = null, RoleHier
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
         if (null === $this->tokenStorage) {
-            $this->data = array(
+            $this->data = [
                 'enabled' => false,
                 'authenticated' => false,
                 'impersonated' => false,
@@ -70,12 +70,12 @@ public function collect(Request $request, Response $response, \Exception $except
                 'token_class' => null,
                 'logout_url' => null,
                 'user' => '',
-                'roles' => array(),
-                'inherited_roles' => array(),
+                'roles' => [],
+                'inherited_roles' => [],
                 'supports_role_hierarchy' => null !== $this->roleHierarchy,
-            );
+            ];
         } elseif (null === $token = $this->tokenStorage->getToken()) {
-            $this->data = array(
+            $this->data = [
                 'enabled' => true,
                 'authenticated' => false,
                 'impersonated' => false,
@@ -85,12 +85,12 @@ public function collect(Request $request, Response $response, \Exception $except
                 'token_class' => null,
                 'logout_url' => null,
                 'user' => '',
-                'roles' => array(),
-                'inherited_roles' => array(),
+                'roles' => [],
+                'inherited_roles' => [],
                 'supports_role_hierarchy' => null !== $this->roleHierarchy,
-            );
+            ];
         } else {
-            $inheritedRoles = array();
+            $inheritedRoles = [];
             $assignedRoles = $token->getRoles();
 
             $impersonatorUser = null;
@@ -127,7 +127,7 @@ public function collect(Request $request, Response $response, \Exception $except
                 return $role
10000
->getRole();
             };
 
-            $this->data = array(
+            $this->data = [
                 'enabled' => true,
                 'authenticated' => $token->isAuthenticated(),
                 'impersonated' => null !== $impersonatorUser,
@@ -140,7 +140,7 @@ public function collect(Request $request, Response $response, \Exception $except
                 'roles' => array_map($extractRoles, $assignedRoles),
                 'inherited_roles' => array_unique(array_map($extractRoles, $inheritedRoles)),
                 'supports_role_hierarchy' => null !== $this->roleHierarchy,
-            );
+            ];
         }
 
         // collect voters and access decision manager information
@@ -152,9 +152,9 @@ public function collect(Request $request, Response $response, \Exception $except
                 $this->data['voters'][] = $this->hasVarDumper ? new ClassStub(\get_class($voter)) : \get_class($voter);
             }
         } else {
-            $this->data['access_decision_log'] = array();
+            $this->data['access_decision_log'] = [];
             $this->data['voter_strategy'] = 'unknown';
-            $this->data['voters'] = array();
+            $this->data['voters'] = [];
         }
 
         // collect firewall context information
@@ -162,7 +162,7 @@ public function collect(Request $request, Response $response, \Exception $except
         if ($this->firewallMap instanceof FirewallMap) {
             $firewallConfig = $this->firewallMap->getFirewallConfig($request);
             if (null !== $firewallConfig) {
-                $this->data['firewall'] = array(
+                $this->data['firewall'] = [
                     'name' => $firewallConfig->getName(),
                     'allows_anonymous' => $firewallConfig->allowsAnonymous(),
                     'request_matcher' => $firewallConfig->getRequestMatcher(),
@@ -175,7 +175,7 @@ public function collect(Request $request, Response $response, \Exception $except
                     'access_denied_url' => $firewallConfig->getAccessDeniedUrl(),
                     'user_checker' => $firewallConfig->getUserChecker(),
                     'listeners' => $firewallConfig->getListeners(),
-                );
+                ];
 
                 // generate exit impersonation path from current request
                 if ($this->data['impersonated'] && null !== $switchUserConfig = $firewallConfig->getSwitchUser()) {
@@ -189,7 +189,7 @@ public function collect(Request $request, Response $response, \Exception $except
         }
 
         // collect firewall listeners information
-        $this->data['listeners'] = array();
+        $this->data['listeners'] = [];
         if ($this->firewall) {
             $this->data['listeners'] = $this->firewall->getWrappedListeners();
         }
@@ -200,7 +200,7 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
     }
 
     public function lateCollect()
diff --git a/src/Symfony/Bundle/SecurityBundle/Debug/WrappedListener.php b/src/Symfony/Bundle/SecurityBundle/Debug/WrappedListener.php
index cdc3f1d57ea3..10e694352731 100644
--- a/src/Symfony/Bundle/SecurityBundle/Debug/WrappedListener.php
+++ b/src/Symfony/Bundle/SecurityBundle/Debug/WrappedListener.php
@@ -53,7 +53,7 @@ public function handle(GetResponseEvent $event)
      */
     public function __call($method, $arguments)
     {
-        return \call_user_func_array(array($this->listener, $method), $arguments);
+        return \call_user_func_array([$this->listener, $method], $arguments);
     }
 
     public function getWrappedListener()
@@ -67,10 +67,10 @@ public function getInfo()
             $this->stub = self::$hasVarDumper ? new ClassStub(\get_class($this->listener)) : \get_class($this->listener);
         }
 
-        return array(
+        return [
             'response' => $this->response,
             'time' => $this->time,
             'stub' => $this->stub,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/RegisterCsrfTokenClearingLogoutHandlerPass.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/RegisterCsrfTokenClearingLogoutHandlerPass.php
index d4d28ecc4eb3..0d7527c26bb7 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/RegisterCsrfTokenClearingLogoutHandlerPass.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/RegisterCsrfTokenClearingLogoutHandlerPass.php
@@ -37,6 +37,6 @@ public function process(ContainerBuilder $container)
             ->addArgument(new Reference('security.csrf.token_storage'))
             ->setPublic(false);
 
-        $container->findDefinition('security.logout_listener')->addMethodCall('addHandler', array(new Reference('security.logout.handler.csrf_token_clearing')));
+        $container->findDefinition('security.logout_listener')->addMethodCall('addHandler', [new Reference('security.logout.handler.csrf_token_clearing')]);
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
index 6cdb9deb8f93..4868dbe82f38 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
@@ -74,7 +74,7 @@ public function getConfigTreeBuilder()
             ->children()
                 ->scalarNode('access_denied_url')->defaultNull()->example('/foo/error403')->end()
                 ->enumNode('session_fixation_strategy')
-                    ->values(array(SessionAuthenticationStrategy::NONE, SessionAuthenticationStrategy::MIGRATE, SessionAuthenticationStrategy::INVALIDATE))
+                    ->values([SessionAuthenticationStrategy::NONE, SessionAuthenticationStrategy::MIGRATE, SessionAuthenticationStrategy::INVALIDATE])
                     ->defaultValue(SessionAuthenticationStrategy::MIGRATE)
                 ->end()
                 ->booleanNode('hide_user_not_found')->defaultTrue()->end()
@@ -84,7 +84,7 @@ public function getConfigTreeBuilder()
                     ->addDefaultsIfNotSet()
                     ->children()
                         ->enumNode('strategy')
-                            ->values(array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, AccessDecisionManager::STRATEGY_CONSENSUS, AccessDecisionManager::STRATEGY_UNANIMOUS))
+                            ->values([AccessDecisionManager::STRATEGY_AFFIRMATIVE, AccessDecisionManager::STRATEGY_CONSENSUS, AccessDecisionManager::STRATEGY_UNANIMOUS])
                         ->end()
                         ->scalarNode('service')->end()
                         ->booleanNode('allow_if_all_abstain')->defaultFalse()->end()
@@ -158,7 +158,7 @@ private function addRoleHierarchySection(ArrayNodeDefinition $rootNode)
                     ->useAttributeAsKey('id')
                     ->prototype('array')
                         ->performNoDeepMerging()
-                        ->beforeNormalization()->ifString()->then(function ($v) { return array('value' => $v); })->end()
+                        ->beforeNormalization()->ifString()->then(function ($v) { return ['value' => $v]; })->end()
                         ->beforeNormalization()
                             ->ifTrue(function ($v) { return \is_array($v) && isset($v['value']); })
                             ->then(function ($v) { return preg_split('/\s*,\s*/', $v['value']); })
@@ -189,7 +189,7 @@ private function addAccessControlSection(ArrayNodeDefinition $rootNode)
                             ->end()
                             ->scalarNode('host')->defaultNull()->end()
                             ->arrayNode('ips')
-                                ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                                ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                                 ->prototype('scalar')->end()
                             ->end()
                             ->arrayNode('methods')
@@ -250,7 +250,7 @@ private function addFirewallsSection(ArrayNodeDefinition $rootNode, array $facto
                 ->info('When true, it will trigger a logout for the user if something has changed. This will be the default behavior as of Syfmony 4.0.')
             ->end()
             ->arrayNode('logout')
-                ->treatTrueLike(array())
+                ->treatTrueLike([])
                 ->canBeUnset()
                 ->children()
                     ->scalarNode('csrf_parameter')->defaultValue('_csrf_token')->end()
@@ -266,7 +266,7 @@ private function addFirewallsSection(ArrayNodeDefinition $rootNode, array $facto
                     ->arrayNode('delete_cookies')
                         ->beforeNormalization()
                             ->ifTrue(function ($v) { return \is_array($v) && \is_int(key($v)); })
-                            ->then(function ($v) { return array_map(function ($v) { return array('name' => $v); }, $v); })
+                            ->then(function ($v) { return array_map(function ($v) { return ['name' => $v]; }, $v); })
                         ->end()
                         ->useAttributeAsKey('name')
                         ->prototype('array')
@@ -301,7 +301,7 @@ private function addFirewallsSection(ArrayNodeDefinition $rootNode, array $facto
             ->end()
         ;
 
-        $abstractFactoryKeys = array();
+        $abstractFactoryKeys = [];
         foreach ($factories as $factoriesAtPosition) {
             foreach ($factoriesAtPosition as $factory) {
                 $name = str_replace('-', '_', $factory->getKey());
@@ -347,17 +347,17 @@ private function addProvidersSection(ArrayNodeDefinition $rootNode)
             ->fixXmlConfig('provider')
             ->children()
                 ->arrayNode('providers')
-                    ->example(array(
-                        'my_memory_provider' => array(
-                            'memory' => array(
-                                'users' => array(
-                                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                                    'bar' => array('password' => 'bar', 'roles' => '[ROLE_USER, ROLE_ADMIN]'),
-                                ),
-                            ),
-                        ),
-                        'my_entity_provider' => array('entity' => array('class' => 'SecurityBundle:User', 'property' => 'username')),
-                    ))
+                    ->example([
+                        'my_memory_provider' => [
+                            'memory' => [
+                                'users' => [
+                                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                                    'bar' => ['password' => 'bar', 'roles' => '[ROLE_USER, ROLE_ADMIN]'],
+                                ],
+                            ],
+                        ],
+                        'my_entity_provider' => ['entity' => ['class' => 'SecurityBundle:User', 'property' => 'username']],
+                    ])
                     ->isRequired()
                     ->requiresAtLeastOneElement()
                     ->useAttributeAsKey('name')
@@ -407,19 +407,19 @@ private function addEncodersSection(ArrayNodeDefinition $rootNode)
             ->fixXmlConfig('encoder')
             ->children()
                 ->arrayNode('encoders')
-                    ->example(array(
+                    ->example([
                         'App\Entity\User1' => 'bcrypt',
-                        'App\Entity\User2' => array(
+                        'App\Entity\User2' => [
                             'algorithm' => 'bcrypt',
                             'cost' => 13,
-                        ),
-                    ))
+                        ],
+                    ])
                     ->requiresAtLeastOneElement()
                     ->useAttributeAsKey('class')
                     ->prototype('array')
                         ->canBeUnset()
                         ->performNoDeepMerging()
-                        ->beforeNormalization()->ifString()->then(function ($v) { return array('algorithm' => $v); })->end()
+                        ->beforeNormalization()->ifString()->then(function ($v) { return ['algorithm' => $v]; })->end()
                         ->children()
                             ->scalarNode('algorithm')->cannotBeEmpty()->end()
                             ->scalarNode('hash_algorithm')->info('Name of hashing algorithm for PBKDF2 (i.e. sha256, sha512, etc..) See hash_algos() for a list of supported algorithms.')->defaultValue('sha512')->end()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/AbstractFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/AbstractFactory.php
index 195ef4c23a4d..00bb451e0ef0 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/AbstractFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/AbstractFactory.php
@@ -26,26 +26,26 @@
  */
 abstract class AbstractFactory implements SecurityFactoryInterface
 {
-    protected $options = array(
+    protected $options = [
         'check_path' => '/login_check',
         'use_forward' => false,
         'require_previous_session' => false,
-    );
+    ];
 
-    protected $defaultSuccessHandlerOptions = array(
+    protected $defaultSuccessHandlerOptions = [
         'always_use_default_target_path' => false,
         'default_target_path' => '/',
         'login_path' => '/login',
         'target_path_parameter' => '_target_path',
         'use_referer' => false,
-    );
+    ];
 
-    protected $defaultFailureHandlerOptions = array(
+    protected $defaultFailureHandlerOptions = [
         'failure_path' => null,
         'failure_forward' => false,
         'login_path' => '/login',
         'failure_path_parameter' => '_failure_path',
-    );
+    ];
 
     public function create(ContainerBuilder $container, $id, $config, $userProviderId, $defaultEntryPointId)
     {
@@ -59,14 +59,14 @@ public function create(ContainerBuilder $container, $id, $config, $userProviderI
         if ($this->isRememberMeAware($config)) {
             $container
                 ->getDefinition($listenerId)
-                ->addTag('security.remember_me_aware', array('id' => $id, 'provider' => $userProviderId))
+                ->addTag('security.remember_me_aware', ['id' => $id, 'provider' => $userProviderId])
             ;
         }
 
         // create entry point if applicable (optional)
         $entryPointId = $this->createEntryPoint($container, $id, $config, $defaultEntryPointId);
 
-        return array($authProviderId, $listenerId, $entryPointId);
+        return [$authProviderId, $listenerId, $entryPointId];
     }
 
     public function addConfiguration(NodeDefinition $node)
@@ -178,8 +178,8 @@ protected function createAuthenticationSuccessHandler($container, $id, $config)
             $successHandler->replaceArgument(2, $id);
         } else {
             $successHandler = $container->setDefinition($successHandlerId, new ChildDefinition('security.authentication.success_handler'));
-            $successHandler->addMethodCall('setOptions', array($options));
-            $successHandler->addMethodCall('setProviderKey', array($id));
+            $successHandler->addMethodCall('setOptions', [$options]);
+            $successHandler->addMethodCall('setProviderKey', [$id]);
         }
 
         return $successHandlerId;
@@ -196,7 +196,7 @@ protected function createAuthenticationFailureHandler($container, $id, $config)
             $failureHandler->replaceArgument(1, $options);
         } else {
             $failureHandler = $container->setDefinition($id, new ChildDefinition('security.authentication.failure_handler'));
-            $failureHandler->addMethodCall('setOptions', array($options));
+            $failureHandler->addMethodCall('setOptions', [$options]);
         }
 
         return $id;
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/FormLoginLdapFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/FormLoginLdapFactory.php
index 8bd389dc95b4..3d9d4b218631 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/FormLoginLdapFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/FormLoginLdapFactory.php
@@ -37,7 +37,7 @@ protected function createAuthProvider(ContainerBuilder $container, $id, $config,
         ;
 
         if (!empty($config['query_string'])) {
-            $definition->addMethodCall('setQueryString', array($config['query_string']));
+            $definition->addMethodCall('setQueryString', [$config['query_string']]);
         }
 
         return $provider;
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/GuardAuthenticationFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/GuardAuthenticationFactory.php
index 03b299e50d24..8384c42da7e6 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/GuardAuthenticationFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/GuardAuthenticationFactory.php
@@ -58,7 +58,7 @@ public function addConfiguration(NodeDefinition $node)
     public function create(ContainerBuilder $container, $id, $config, $userProvider, $defaultEntryPoint)
     {
         $authenticatorIds = $config['authenticators'];
-        $authenticatorReferences = array();
+        $authenticatorReferences = [];
         foreach ($authenticatorIds as $authenticatorId) {
             $authenticatorReferences[] = new Reference($authenticatorId);
         }
@@ -87,9 +87,9 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         // this is always injected - then the listener decides if it should be used
         $container
             ->getDefinition($listenerId)
-            ->addTag('security.remember_me_aware', array('id' => $id, 'provider' => $userProvider));
+            ->addTag('security.remember_me_aware', ['id' => $id, 'provider' => $userProvider]);
 
-        return array($providerId, $listenerId, $entryPointId);
+        return [$providerId, $listenerId, $entryPointId];
     }
 
     private function determineEntryPoint($defaultEntryPointId, array $config)
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpBasicFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpBasicFactory.php
index 7c90ef620572..f3b5bc167e64 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpBasicFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpBasicFactory.php
@@ -41,9 +41,9 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $listener = $container->setDefinition($listenerId, new ChildDefinition('security.authentication.listener.basic'));
         $listener->replaceArgument(2, $id);
         $listener->replaceArgument(3, new Reference($entryPointId));
-        $listener->addMethodCall('setSessionAuthenticationStrategy', array(new Reference('security.authentication.session_strategy.'.$id)));
+        $listener->addMethodCall('setSessionAuthenticationStrategy', [new Reference('security.authentication.session_strategy.'.$id)]);
 
-        return array($provider, $listenerId, $entryPointId);
+        return [$provider, $listenerId, $entryPointId];
     }
 
     public function getPosition()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpBasicLdapFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpBasicLdapFactory.php
index ce3cdda96eaf..8ae020156886 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpBasicLdapFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpBasicLdapFactory.php
@@ -41,7 +41,7 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $entryPointId = $this->createEntryPoint($container, $id, $config, $defaultEntryPoint);
 
         if (!empty($config['query_string'])) {
-            $definition->addMethodCall('setQueryString', array($config['query_string']));
+            $definition->addMethodCall('setQueryString', [$config['query_string']]);
         }
 
         // listener
@@ -50,7 +50,7 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $listener->replaceArgument(2, $id);
         $listener->replaceArgument(3, new Reference($entryPointId));
 
-        return array($provider, $listenerId, $entryPointId);
+        return [$provider, $listenerId, $entryPointId];
     }
 
     public function addConfiguration(NodeDefinition $node)
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpDigestFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpDigestFactory.php
index 8dc5e1655ead..fd318b0bb26c 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpDigestFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpDigestFactory.php
@@ -51,9 +51,9 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $listener->replaceArgument(1, new Reference($userProvider));
         $listener->replaceArgument(2, $id);
         $listener->replaceArgument(3, new Reference($entryPointId));
-        $listener->addMethodCall('setSessionAuthenticationStrategy', array(new Reference('security.authentication.session_strategy.'.$id)));
+        $listener->addMethodCall('setSessionAuthenticationStrategy', [new Reference('security.authentication.session_strategy.'.$id)]);
 
-        return array($provider, $listenerId, $entryPointId);
+        return [$provider, $listenerId, $entryPointId];
     }
 
     public function getPosition()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/JsonLoginFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/JsonLoginFactory.php
index 6c7adb032395..a660401dbea3 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/JsonLoginFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/JsonLoginFactory.php
@@ -26,8 +26,8 @@ public function __construct()
     {
         $this->addOption('username_path', 'username');
         $this->addOption('password_path', 'password');
-        $this->defaultFailureHandlerOptions = array();
-        $this->defaultSuccessHandlerOptions = array();
+        $this->defaultFailureHandlerOptions = [];
+        $this->defaultSuccessHandlerOptions = [];
     }
 
     /**
@@ -89,7 +89,7 @@ protected function createListener($container, $id, $config, $userProvider)
         $listener->replaceArgument(4, isset($config['success_handler']) ? new Reference($this->createAuthenticationSuccessHandler($container, $id, $config)) : null);
         $listener->replaceArgument(5, isset($config['failure_handler']) ? new Reference($this->createAuthenticationFailureHandler($container, $id, $config)) : null);
         $listener->replaceArgument(6, array_intersect_key($config, $this->options));
-        $listener->addMethodCall('setSessionAuthenticationStrategy', array(new Reference('security.authentication.session_strategy.'.$id)));
+        $listener->addMethodCall('setSessionAuthenticationStrategy', [new Reference('security.authentication.session_strategy.'.$id)]);
 
         $listenerId .= '.'.$id;
         $container->setDefinition($listenerId, $listener);
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php
index 89b428a27d40..34de3d670147 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php
@@ -18,7 +18,7 @@
 
 class RememberMeFactory implements SecurityFactoryInterface
 {
-    protected $options = array(
+    protected $options = [
         'name' => 'REMEMBERME',
         'lifetime' => 31536000,
         'path' => '/',
@@ -27,7 +27,7 @@ class RememberMeFactory implements SecurityFactoryInterface
         'httponly' => true,
         'always_remember_me' => false,
         'remember_me_parameter' => '_remember_me',
-    );
+    ];
 
     public function create(ContainerBuilder $container, $id, $config, $userProvider, $defaultEntryPoint)
     {
@@ -52,7 +52,7 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         if ($container->hasDefinition('security.logout_listener.'.$id)) {
             $container
                 ->getDefinition('security.logout_listener.'.$id)
-                ->addMethodCall('addHandler', array(new Reference($rememberMeServicesId)))
+                ->addMethodCall('addHandler', [new Reference($rememberMeServicesId)])
             ;
         }
 
@@ -61,16 +61,16 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $rememberMeServices->replaceArgument(2, $id);
 
         if (isset($config['token_provider'])) {
-            $rememberMeServices->addMethodCall('setTokenProvider', array(
+            $rememberMeServices->addMethodCall('setTokenProvider', [
                 new Reference($config['token_provider']),
-            ));
+            ]);
         }
 
         // remember-me options
         $rememberMeServices->replaceArgument(3, array_intersect_key($config, $this->options));
 
         // attach to remember-me aware listeners
-        $userProviders = array();
+        $userProviders = [];
         foreach ($container->findTaggedServiceIds('security.remember_me_aware') as $serviceId => $attributes) {
             foreach ($attributes as $attribute) {
                 if (!isset($attribute['id']) || $attribute['id'] !== $id) {
@@ -84,12 +84,12 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
                 $userProviders[] = new Reference($attribute['provider']);
                 $container
                     ->getDefinition($serviceId)
-                    ->addMethodCall('setRememberMeServices', array(new Reference($rememberMeServicesId)))
+                    ->addMethodCall('setRememberMeServices', [new Reference($rememberMeServicesId)])
                 ;
             }
         }
         if ($config['user_providers']) {
-            $userProviders = array();
+            $userProviders = [];
             foreach ($config['user_providers'] as $providerName) {
                 $userProviders[] = new Reference('security.user.provider.concrete.'.$providerName);
             }
@@ -106,7 +106,7 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $listener->replaceArgument(1, new Reference($rememberMeServicesId));
         $listener->replaceArgument(5, $config['catch_exceptions']);
 
-        return array($authProviderId, $listenerId, $defaultEntryPoint);
+        return [$authProviderId, $listenerId, $defaultEntryPoint];
     }
 
     public function getPosition()
@@ -131,7 +131,7 @@ public function addConfiguration(NodeDefinition $node)
             ->scalarNode('token_provider')->end()
             ->arrayNode('user_providers')
                 ->beforeNormalization()
-                    ->ifString()->then(function ($v) { return array($v); })
+                    ->ifString()->then(function ($v) { return [$v]; })
                 ->end()
                 ->prototype('scalar')->end()
             ->end()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RemoteUserFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RemoteUserFactory.php
index 654816e50e73..176f65b13578 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RemoteUserFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RemoteUserFactory.php
@@ -38,9 +38,9 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $listener = $container->setDefinition($listenerId, new ChildDefinition('security.authentication.listener.remote_user'));
         $listener->replaceArgument(2, $id);
         $listener->replaceArgument(3, $config['user']);
-        $listener->addMethodCall('setSessionAuthenticationStrategy', array(new Reference('security.authentication.session_strategy.'.$id)));
+        $listener->addMethodCall('setSessionAuthenticationStrategy', [new Reference('security.authentication.session_strategy.'.$id)]);
 
-        return array($providerId, $listenerId, $defaultEntryPoint);
+        return [$providerId, $listenerId, $defaultEntryPoint];
     }
 
     public function getPosition()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SimplePreAuthenticationFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SimplePreAuthenticationFactory.php
index de0df6868f3f..f92796d58a49 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SimplePreAuthenticationFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SimplePreAuthenticationFactory.php
@@ -57,8 +57,8 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $listener = $container->setDefinition($listenerId, new ChildDefinition('security.authentication.listener.simple_preauth'));
         $listener->replaceArgument(2, $id);
         $listener->replaceArgument(3, new Reference($config['authenticator']));
-        $listener->addMethodCall('setSessionAuthenticationStrategy', array(new Reference('security.authentication.session_strategy.'.$id)));
+        $listener->addMethodCall('setSessionAuthenticationStrategy', [new Reference('security.authentication.session_strategy.'.$id)]);
 
-        return array($provider, $listenerId, null);
+        return [$provider, $listenerId, null];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/X509Factory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/X509Factory.php
index 17390f4b828f..35879ee4956b 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/X509Factory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/X509Factory.php
@@ -39,9 +39,9 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $listener->replaceArgument(2, $id);
         $listener->replaceArgument(3, $config['user']);
         $listener->replaceArgument(4, $config['credentials']);
-        $listener->addMethodCall('setSessionAuthenticationStrategy', array(new Reference('security.authentication.session_strategy.'.$id)));
+        $listener->addMethodCall('setSessionAuthenticationStrategy', [new Reference('security.authentication.session_strategy.'.$id)]);
 
-        return array($providerId, $listenerId, $defaultEntryPoint);
+        return [$providerId, $listenerId, $defaultEntryPoint];
     }
 
     public function getPosition()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php
index 6b0800953b4e..1e7660110502 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php
@@ -28,10 +28,10 @@ public function create(ContainerBuilder $container, $id, $config)
     {
         $definition = $container->setDefinition($id, new ChildDefinition('security.user.provider.in_memory'));
         $defaultPassword = new Parameter('container.build_id');
-        $users = array();
+        $users = [];
 
         foreach ($config['users'] as $username => $user) {
-            $users[$username] = array('password' => null !== $user['password'] ? (string) $user['password'] : $defaultPassword, 'roles' => $user['roles']);
+            $users[$username] = ['password' => null !== $user['password'] ? (string) $user['password'] : $defaultPassword, 'roles' => $user['roles']];
         }
 
         $definition->addArgument($users);
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
index bcc4c5f26a88..8d4a46f9f330 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
@@ -37,20 +37,20 @@
  */
 class SecurityExtension extends Extension
 {
-    private $requestMatchers = array();
-    private $expressions = array();
-    private $contextListeners = array();
-    private $listenerPositions = array('pre_auth', 'form', 'http', 'remember_me');
-    private $factories = array();
-    private $userProviderFactories = array();
+    private $requestMatchers = [];
+    private $expressions = [];
+    private $contextListeners = [];
+    private $listenerPositions = ['pre_auth', 'form', 'http', 'remember_me'];
+    private $factories = [];
+    private $userProviderFactories = [];
     private $expressionLanguage;
-    private $logoutOnUserChangeByContextKey = array();
-    private $statelessFirewallKeys = array();
+    private $logoutOnUserChangeByContextKey = [];
+    private $statelessFirewallKeys = [];
 
     public function __construct()
     {
         foreach ($this->listenerPositions as $position) {
-            $this->factories[$position] = array();
+            $this->factories[$position] = [];
         }
     }
 
@@ -141,7 +141,7 @@ public function load(array $configs, ContainerBuilder $container)
 
         if (\PHP_VERSION_ID < 70000) {
             // add some required classes for compilation
-            $this->addClassesToCompile(array(
+            $this->addClassesToCompile([
                 'Symfony\Component\Security\Http\Firewall',
                 'Symfony\Component\Security\Core\User\UserProviderInterface',
                 'Symfony\Component\Security\Core\Authentication\AuthenticationProviderManager',
@@ -152,7 +152,7 @@ public function load(array $configs, ContainerBuilder $container)
                 'Symfony\Bundle\SecurityBundle\Security\FirewallConfig',
                 'Symfony\Bundle\SecurityBundle\Security\FirewallContext',
                 'Symfony\Component\HttpFoundation\RequestMatcher',
-            ));
+            ]);
         }
     }
 
@@ -194,11 +194,11 @@ private function configureDbalAclProvider(array $config, ContainerBuilder $conta
 
         $container
             ->getDefinition('security.acl.dbal.schema_listener')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'connection' => $config['connection'],
                 'event' => 'postGenerateSchema',
                 'lazy' => true,
-            ))
+            ])
         ;
 
         $container->getDefinition('security.acl.cache.doctrine')->addArgument($config['cache']['prefix']);
@@ -229,9 +229,9 @@ private function createAuthorization($config, ContainerBuilder $container)
         }
 
         if (\PHP_VERSION_ID < 70000) {
-            $this->addClassesToCompile(array(
+            $this->addClassesToCompile([
                 'Symfony\\Component\\Security\\Http\\AccessMap',
-            ));
+            ]);
         }
 
         foreach ($config['access_control'] as $access) {
@@ -249,7 +249,7 @@ private function createAuthorization($config, ContainerBuilder $container)
             }
 
             $container->getDefinition('security.access_map')
-                      ->addMethodCall('add', array($matcher, $attributes, $access['requires_channel']));
+                      ->addMethodCall('add', [$matcher, $attributes, $access['requires_channel']]);
         }
     }
 
@@ -265,7 +265,7 @@ private function createFirewalls($config, ContainerBuilder $container)
         // make the ContextListener aware of the configured user providers
         $contextListenerDefinition = $container->getDefinition('security.context_listener');
         $arguments = $contextListenerDefinition->getArguments();
-        $userProviders = array();
+        $userProviders = [];
         foreach ($providerIds as $userProviderId) {
             $userProviders[] = new Reference($userProviderId);
         }
@@ -276,7 +276,7 @@ private function createFirewalls($config, ContainerBuilder $container)
 
         // load firewall map
         $mapDef = $container->getDefinition('security.firewall.map');
-        $map = $authenticationProviders = $contextRefs = array();
+        $map = $authenticationProviders = $contextRefs = [];
         foreach ($firewalls as $name => $firewall) {
             if (isset($firewall['user_checker']) && 'security.user_checker' !== $firewall['user_checker']) {
                 $customUserChecker = true;
@@ -329,7 +329,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         } elseif (isset($firewall['pattern']) || isset($firewall['host'])) {
             $pattern = isset($firewall['pattern']) ? $firewall['pattern'] : null;
             $host = isset($firewall['host']) ? $firewall['host'] : null;
-            $methods = isset($firewall['methods']) ? $firewall['methods'] : array();
+            $methods = isset($firewall['methods']) ? $firewall['methods'] : [];
             $matcher = $this->createRequestMatcher($container, $pattern, $host, $methods);
         }
 
@@ -338,7 +338,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
 
         // Security disabled?
         if (false === $firewall['security']) {
-            return array($matcher, array(), null, null);
+            return [$matcher, [], null, null];
         }
 
         $config->replaceArgument(4, $firewall['stateless']);
@@ -357,8 +357,8 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         $config->replaceArgument(5, $defaultProvider);
 
         // Register listeners
-        $listeners = array();
-        $listenerKeys = array();
+        $listeners = [];
+        $listenerKeys = [];
 
         // Channel listener
         $listeners[] = new Reference('security.channel_listener');
@@ -379,7 +379,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
                 throw new InvalidConfigurationException(sprintf('Firewalls "%s" and "%s" need to have the same value for option "logout_on_user_change" as they are sharing the context "%s"', $this->logoutOnUserChangeByContextKey[$contextKey][0], $id, $contextKey));
             }
 
-            $this->logoutOnUserChangeByContextKey[$contextKey] = array($id, $logoutOnUserChange);
+            $this->logoutOnUserChangeByContextKey[$contextKey] = [$id, $logoutOnUserChange];
             $listeners[] = new Reference($this->createContextListener($container, $contextKey, $logoutOnUserChange));
             $sessionStrategyId = 'security.authentication.session_strategy';
         } else {
@@ -395,11 +395,11 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         if (isset($firewall['logout'])) {
             $logoutListenerId = 'security.logout_listener.'.$id;
             $logoutListener = $container->setDefinition($logoutListenerId, new ChildDefinition('security.logout_listener'));
-            $logoutListener->replaceArgument(3, array(
+            $logoutListener->replaceArgument(3, [
                 'csrf_parameter' => $firewall['logout']['csrf_parameter'],
                 'csrf_token_id' => $firewall['logout']['csrf_token_id'],
                 'logout_path' => $firewall['logout']['path'],
-            ));
+            ]);
 
             // add logout success handler
             if (isset($firewall['logout']['success_handler'])) {
@@ -418,7 +418,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
 
             // add session logout handler
             if (true === $firewall['logout']['invalidate_session'] && false === $firewall['stateless']) {
-                $logoutListener->addMethodCall('addHandler', array(new Reference('security.logout.handler.session')));
+                $logoutListener->addMethodCall('addHandler', [new Reference('security.logout.handler.session')]);
             }
 
             // add cookie logout handler
@@ -427,25 +427,25 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
                 $cookieHandler = $container->setDefinition($cookieHandlerId, new ChildDefinition('security.logout.handler.cookie_clearing'));
                 $cookieHandler->addArgument($firewall['logout']['delete_cookies']);
 
-                $logoutListener->addMethodCall('addHandler', array(new Reference($cookieHandlerId)));
+                $logoutListener->addMethodCall('addHandler', [new Reference($cookieHandlerId)]);
             }
 
             // add custom handlers
             foreach ($firewall['logout']['handlers'] as $handlerId) {
-                $logoutListener->addMethodCall('addHandler', array(new Reference($handlerId)));
+                $logoutListener->addMethodCall('addHandler', [new Reference($handlerId)]);
             }
 
             // register with LogoutUrlGenerator
             $container
                 ->getDefinition('security.logout_url_generator')
-                ->addMethodCall('registerListener', array(
+                ->addMethodCall('registerListener', [
                     $id,
                     $firewall['logout']['path'],
                     $firewall['logout']['csrf_token_id'],
                     $firewall['logout']['csrf_parameter'],
                     isset($firewall['logout']['csrf_token_generator']) ? new Reference($firewall['logout']['csrf_token_generator']) : null,
                     false === $firewall['stateless'] && isset($firewall['context']) ? $firewall['context'] : null,
-                ))
+                ])
             ;
         }
 
@@ -492,7 +492,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         $config->replaceArgument(10, $listenerKeys);
         $config->replaceArgument(11, isset($firewall['switch_user']) ? $firewall['switch_user'] : null);
 
-        return array($matcher, $listeners, $exceptionListener, null !== $logoutListenerId ? new Reference($logoutListenerId) : null);
+        return [$matcher, $listeners, $exceptionListener, null !== $logoutListenerId ? new Reference($logoutListenerId) : null];
     }
 
     private function createContextListener($container, $contextKey, $logoutUserOnChange)
@@ -504,14 +504,14 @@ private function createContextListener($container, $contextKey, $logoutUserOnCha
         $listenerId = 'security.context_listener.'.\count($this->contextListeners);
         $listener = $container->setDefinition($listenerId, new ChildDefinition('security.context_listener'));
         $listener->replaceArgument(2, $contextKey);
-        $listener->addMethodCall('setLogoutOnUserChange', array($logoutUserOnChange));
+        $listener->addMethodCall('setLogoutOnUserChange', [$logoutUserOnChange]);
 
         return $this->contextListeners[$contextKey] = $listenerId;
     }
 
     private function createAuthenticationListeners($container, $id, $firewall, &$authenticationProviders, $defaultProvider = null, array $providerIds, $defaultEntryPoint)
     {
-        $listeners = array();
+        $listeners = [];
         $hasListeners = false;
 
         foreach ($this->listenerPositions as $position) {
@@ -568,19 +568,19 @@ private function createAuthenticationListeners($container, $id, $firewall, &$aut
             throw new InvalidConfigurationException(sprintf('No authentication listener registered for firewall "%s".', $id));
         }
 
-        return array($listeners, $defaultEntryPoint);
+        return [$listeners, $defaultEntryPoint];
     }
 
     private function createEncoders($encoders, ContainerBuilder $container)
     {
-        $encoderMap = array();
+        $encoderMap = [];
         foreach ($encoders as $class => $encoder) {
             $encoderMap[$class] = $this->createEncoder($encoder, $container);
         }
 
         $container
             ->getDefinition('security.encoder_factory.generic')
-            ->setArguments(array($encoderMap))
+            ->setArguments([$encoderMap])
         ;
     }
 
@@ -593,33 +593,33 @@ private function createEncoder($config, ContainerBuilder $container)
 
         // plaintext encoder
         if ('plaintext' === $config['algorithm']) {
-            $arguments = array($config['ignore_case']);
+            $arguments = [$config['ignore_case']];
 
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder',
                 'arguments' => $arguments,
-            );
+            ];
         }
 
         // pbkdf2 encoder
         if ('pbkdf2' === $config['algorithm']) {
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Pbkdf2PasswordEncoder',
-                'arguments' => array(
+                'arguments' => [
                     $config['hash_algorithm'],
                     $config['encode_as_base64'],
                     $config['iterations'],
                     $config['key_length'],
-                ),
-            );
+                ],
+            ];
         }
 
         // bcrypt encoder
         if ('bcrypt' === $config['algorithm']) {
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder',
-                'arguments' => array($config['cost']),
-            );
+                'arguments' => [$config['cost']],
+            ];
         }
 
         // Argon2i encoder
@@ -628,10 +628,10 @@ private function createEncoder($config, ContainerBuilder $container)
                 throw new InvalidConfigurationException('Argon2i algorithm is not supported. Please install the libsodium extension or upgrade to PHP 7.2+.');
             }
 
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Argon2iPasswordEncoder',
-                'arguments' => array(),
-            );
+                'arguments' => [],
+            ];
         }
 
         // run-time configured encoder
@@ -641,7 +641,7 @@ private function createEncoder($config, ContainerBuilder $container)
     // Parses user providers and returns an array of their ids
     private function createUserProviders($config, ContainerBuilder $container)
     {
-        $providerIds = array();
+        $providerIds = [];
         foreach ($config['providers'] as $name => $provider) {
             $id = $this->createUserDaoProvider($name, $provider, $container);
             $providerIds[str_replace('-', '_', $name)] = $id;
@@ -675,7 +675,7 @@ private function createUserDaoProvider($name, $provider, ContainerBuilder $conta
 
         // Chain provider
         if (isset($provider['chain'])) {
-            $providers = array();
+            $providers = [];
             foreach ($provider['chain']['providers'] as $providerName) {
                 $providers[] = new Reference($this->getUserProviderId($providerName));
             }
@@ -744,26 +744,26 @@ private function createExpression($container, $expression)
             ->register($id, 'Symfony\Component\ExpressionLanguage\SerializedParsedExpression')
             ->setPublic(false)
             ->addArgument($expression)
-            ->addArgument(serialize($this->getExpressionLanguage()->parse($expression, array('token', 'user', 'object', 'roles', 'request', 'trust_resolver'))->getNodes()))
+            ->addArgument(serialize($this->getExpressionLanguage()->parse($expression, ['token', 'user', 'object', 'roles', 'request', 'trust_resolver'])->getNodes()))
         ;
 
         return $this->expressions[$id] = new Reference($id);
     }
 
-    private function createRequestMatcher($container, $path = null, $host = null, $methods = array(), $ip = null, array $attributes = array())
+    private function createRequestMatcher($container, $path = null, $host = null, $methods = [], $ip = null, array $attributes = [])
     {
         if ($methods) {
             $methods = array_map('strtoupper', (array) $methods);
         }
 
-        $id = 'security.request_matcher.'.ContainerBuilder::hash(array($path, $host, $methods, $ip, $attributes));
+        $id = 'security.request_matcher.'.ContainerBuilder::hash([$path, $host, $methods, $ip, $attributes]);
 
         if (isset($this->requestMatchers[$id])) {
             return $this->requestMatchers[$id];
         }
 
         // only add arguments that are necessary
-        $arguments = array($path, $host, $methods, $ip, $attributes);
+        $arguments = [$path, $host, $methods, $ip, $attributes];
         while (\count($arguments) > 0 && !end($arguments)) {
             array_pop($arguments);
         }
diff --git a/src/Symfony/Bundle/SecurityBundle/Security/FirewallConfig.php b/src/Symfony/Bundle/SecurityBundle/Security/FirewallConfig.php
index 6ccd478940c4..8ea8b4a8678e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Security/FirewallConfig.php
+++ b/src/Symfony/Bundle/SecurityBundle/Security/FirewallConfig.php
@@ -43,7 +43,7 @@ final class FirewallConfig
      * @param string[]    $listeners
      * @param array|null  $switchUser
      */
-    public function __construct($name, $userChecker, $requestMatcher = null, $securityEnabled = true, $stateless = false, $provider = null, $context = null, $entryPoint = null, $accessDeniedHandler = null, $accessDeniedUrl = null, $listeners = array(), $switchUser = null)
+    public function __construct($name, $userChecker, $requestMatcher = null, $securityEnabled = true, $stateless = false, $provider = null, $context = null, $entryPoint = null, $accessDeniedHandler = null, $accessDeniedUrl = null, $listeners = [], $switchUser = null)
     {
         $this->name = $name;
         $this->userChecker = $userChecker;
diff --git a/src/Symfony/Bundle/SecurityBundle/Security/FirewallContext.php b/src/Symfony/Bundle/SecurityBundle/Security/FirewallContext.php
index 323f9d8cbf65..ecbaf596f9cd 100644
--- a/src/Symfony/Bundle/SecurityBundle/Security/FirewallContext.php
+++ b/src/Symfony/Bundle/SecurityBundle/Security/FirewallContext.php
@@ -57,7 +57,7 @@ public function getContext()
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s::getListeners/getExceptionListener() instead.', __METHOD__, __CLASS__), E_USER_DEPRECATED);
 
-        return array($this->getListeners(), $this->getExceptionListener(), $this->getLogoutListener());
+        return [$this->getListeners(), $this->getExceptionListener(), $this->getLogoutListener()];
     }
 
     /**
diff --git a/src/Symfony/Bundle/SecurityBundle/Security/FirewallMap.php b/src/Symfony/Bundle/SecurityBundle/Security/FirewallMap.php
index 79ad2ef65c8a..599f9050aff9 100644
--- a/src/Symfony/Bundle/SecurityBundle/Security/FirewallMap.php
+++ b/src/Symfony/Bundle/SecurityBundle/Security/FirewallMap.php
@@ -121,10 +121,10 @@ public function getListeners(Request $request)
         $context = $this->getFirewallContext($request);
 
         if (null === $context) {
-            return array(array(), null, null);
+            return [[], null, null];
         }
 
-        return array($context->getListeners(), $context->getExceptionListener(), $context->getLogoutListener());
+        return [$context->getListeners(), $context->getExceptionListener(), $context->getLogoutListener()];
     }
 
     /**
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
index 5e71ac6d8ae2..f8b06f148ba6 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
@@ -92,12 +92,12 @@ public function testCollectAuthenticationTokenAndRoles(array $roles, array $norm
 
     public function testCollectImpersonatedToken()
     {
-        $adminToken = new UsernamePasswordToken('yceruto', 'P4$$w0rD', 'provider', array('ROLE_ADMIN'));
+        $adminToken = new UsernamePasswordToken('yceruto', 'P4$$w0rD', 'provider', ['ROLE_ADMIN']);
 
-        $userRoles = array(
+        $userRoles = [
             'ROLE_USER',
             new SwitchUserRole('ROLE_PREVIOUS_ADMIN', $adminToken),
-        );
+        ];
 
         $tokenStorage = new TokenStorage();
         $tokenStorage->setToken(new UsernamePasswordToken('hhamon', 'P4$$w0rD', 'provider', $userRoles));
@@ -112,8 +112,8 @@ public function testCollectImpersonatedToken()
         $this->assertSame('yceruto', $collector->getImpersonatorUser());
         $this->assertSame('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken', $collector->getTokenClass()->getValue());
         $this->assertTrue($collector->supportsRoleHierarchy());
-        $this->assertSame(array('ROLE_USER', 'ROLE_PREVIOUS_ADMIN'), $collector->getRoles()->getValue(true));
-        $this->assertSame(array(), $collector->getInheritedRoles()->getValue(true));
+        $this->assertSame(['ROLE_USER', 'ROLE_PREVIOUS_ADMIN'], $collector->getRoles()->getValue(true));
+        $this->assertSame([], $collector->getInheritedRoles()->getValue(true));
         $this->assertSame('hhamon', $collector->getUser());
     }
 
@@ -208,7 +208,7 @@ public function testGetListeners()
             ->expects($this->once())
             ->method('getListeners')
             ->with($request)
-            ->willReturn(array(array($listener), null));
+            ->willReturn([[$listener], null]);
 
         $firewall = new TraceableFirewallListener($firewallMap, new EventDispatcher(), new LogoutUrlGenerator());
         $firewall->onKernelRequest($event);
@@ -223,43 +223,43 @@ public function testGetListeners()
 
     public function provideRoles()
     {
-        return array(
+        return [
             // Basic roles
-            array(
-                array('ROLE_USER'),
-                array('ROLE_USER'),
-                array(),
-            ),
-            array(
-                array(new Role('ROLE_USER')),
-                array('ROLE_USER'),
-                array(),
-            ),
+            [
+                ['ROLE_USER'],
+                ['ROLE_USER'],
+                [],
+            ],
+            [
+                [new Role('ROLE_USER')],
+                ['ROLE_USER'],
+                [],
+            ],
             // Inherited roles
-            array(
-                array('ROLE_ADMIN'),
-                array('ROLE_ADMIN'),
-                array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
-            ),
-            array(
-                array(new Role('ROLE_ADMIN')),
-                array('ROLE_ADMIN'),
-                array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
-            ),
-            array(
-                array('ROLE_ADMIN', 'ROLE_OPERATOR'),
-                array('ROLE_ADMIN', 'ROLE_OPERATOR'),
-                array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
-            ),
-        );
+            [
+                ['ROLE_ADMIN'],
+                ['ROLE_ADMIN'],
+                ['ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'],
+            ],
+            [
+                [new Role('ROLE_ADMIN')],
+                ['ROLE_ADMIN'],
+                ['ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'],
+            ],
+            [
+                ['ROLE_ADMIN', 'ROLE_OPERATOR'],
+                ['ROLE_ADMIN', 'ROLE_OPERATOR'],
+                ['ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'],
+            ],
+        ];
     }
 
     private function getRoleHierarchy()
     {
-        return new RoleHierarchy(array(
-            'ROLE_ADMIN' => array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
-            'ROLE_OPERATOR' => array('ROLE_USER'),
-        ));
+        return new RoleHierarchy([
+            'ROLE_ADMIN' => ['ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'],
+            'ROLE_OPERATOR' => ['ROLE_USER'],
+        ]);
     }
 
     private function getRequest()
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
index 854391c235cc..ed5bba4412d7 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
@@ -51,7 +51,7 @@ public function testOnKernelRequestRecordsListeners()
             ->expects($this->once())
             ->method('getListeners')
             ->with($request)
-            ->willReturn(array(array($listener), null));
+            ->willReturn([[$listener], null]);
 
         $firewall = new TraceableFirewallListener($firewallMap, new EventDispatcher(), new LogoutUrlGenerator());
         $firewall->onKernelRequest($event);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
index 5eae4388dc2f..5a92b2c71407 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
@@ -29,7 +29,7 @@ public function testNoVoters()
         $container = new ContainerBuilder();
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array())
+            ->addArgument([])
         ;
 
         $compilerPass = new AddSecurityVotersPass();
@@ -41,7 +41,7 @@ public function testThatSecurityVotersAreProcessedInPriorityOrder()
         $container = new ContainerBuilder();
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array())
+            ->addArgument([])
         ;
         $container
             ->register('no_prio_service', Voter::class)
@@ -49,15 +49,15 @@ public function testThatSecurityVotersAreProcessedInPriorityOrder()
         ;
         $container
             ->register('lowest_prio_service', Voter::class)
-            ->addTag('security.voter', array('priority' => 100))
+            ->addTag('security.voter', ['priority' => 100])
         ;
         $container
             ->register('highest_prio_service', Voter::class)
-            ->addTag('security.voter', array('priority' => 200))
+            ->addTag('security.voter', ['priority' => 200])
         ;
         $container
             ->register('zero_prio_service', Voter::class)
-            ->addTag('security.voter', array('priority' => 0))
+            ->addTag('security.voter', ['priority' => 0])
         ;
         $compilerPass = new AddSecurityVotersPass();
         $compilerPass->process($container);
@@ -78,7 +78,7 @@ public function testVoterMissingInterface()
         $container = new ContainerBuilder();
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array())
+            ->addArgument([])
         ;
         $container
             ->register('without_interface', VoterWithoutInterface::class)
@@ -111,7 +111,7 @@ public function testVoterMissingInterfaceAndMethod()
         $container = new ContainerBuilder();
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array())
+            ->addArgument([])
         ;
         $container
             ->register('without_method', 'stdClass')
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSessionDomainConstraintPassTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSessionDomainConstraintPassTest.php
index 382bdebe018f..2d34dc93762a 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSessionDomainConstraintPassTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSessionDomainConstraintPassTest.php
@@ -22,7 +22,7 @@ class AddSessionDomainConstraintPassTest extends TestCase
 {
     public function testSessionCookie()
     {
-        $container = $this->createContainer(array('cookie_domain' => '.symfony.com.', 'cookie_secure' => true));
+        $container = $this->createContainer(['cookie_domain' => '.symfony.com.', 'cookie_secure' => true]);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -37,7 +37,7 @@ public function testSessionCookie()
 
     public function testSessionNoDomain()
     {
-        $container = $this->createContainer(array('cookie_secure' => true));
+        $container = $this->createContainer(['cookie_secure' => true]);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -52,7 +52,7 @@ public function testSessionNoDomain()
 
     public function testSessionNoSecure()
     {
-        $container = $this->createContainer(array('cookie_domain' => '.symfony.com.'));
+        $container = $this->createContainer(['cookie_domain' => '.symfony.com.']);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -67,7 +67,7 @@ public function testSessionNoSecure()
 
     public function testSessionNoSecureAndNoDomain()
     {
-        $container = $this->createContainer(array());
+        $container = $this->createContainer([]);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -99,7 +99,7 @@ public function testNoSession()
     private function createContainer($sessionStorageOptions)
     {
         $container = new ContainerBuilder();
-        $container->setParameter('kernel.bundles_metadata', array());
+        $container->setParameter('kernel.bundles_metadata', []);
         $container->setParameter('kernel.cache_dir', __DIR__);
         $container->setParameter('kernel.charset', 'UTF-8');
         $container->setParameter('kernel.container_class', 'cc');
@@ -113,15 +113,15 @@ private function createContainer($sessionStorageOptions)
         $container->setParameter('request_listener.http_port', 80);
         $container->setParameter('request_listener.https_port', 443);
 
-        $config = array(
-            'security' => array(
-                'providers' => array('some_provider' => array('id' => 'foo')),
-                'firewalls' => array('some_firewall' => array('security' => false)),
-            ),
-        );
+        $config = [
+            'security' => [
+                'providers' => ['some_provider' => ['id' => 'foo']],
+                'firewalls' => ['some_firewall' => ['security' => false]],
+            ],
+        ];
 
         $ext = new FrameworkExtension();
-        $ext->load(array('framework' => array('csrf_protection' => false)), $container);
+        $ext->load(['framework' => ['csrf_protection' => false]], $container);
 
         $ext = new SecurityExtension();
         $ext->load($config, $container);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
index 15b43bede956..951b61dd9f3a 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
@@ -29,11 +29,11 @@ abstract protected function getFileExtension();
     public function testRolesHierarchy()
     {
         $container = $this->getContainer('container1');
-        $this->assertEquals(array(
-            'ROLE_ADMIN' => array('ROLE_USER'),
-            'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
-            'ROLE_REMOTE' => array('ROLE_USER', 'ROLE_ADMIN'),
-        ), $container->getParameter('security.role_hierarchy.roles'));
+        $this->assertEquals([
+    
10000
        'ROLE_ADMIN' => ['ROLE_USER'],
+            'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
+            'ROLE_REMOTE' => ['ROLE_USER', 'ROLE_ADMIN'],
+        ], $container->getParameter('security.role_hierarchy.roles'));
     }
 
     /**
@@ -43,11 +43,11 @@ public function testRolesHierarchy()
     public function testRolesHierarchyWithAcl()
     {
         $container = $this->getContainer('container1_with_acl');
-        $this->assertEquals(array(
-            'ROLE_ADMIN' => array('ROLE_USER'),
-            'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
-            'ROLE_REMOTE' => array('ROLE_USER', 'ROLE_ADMIN'),
-        ), $container->getParameter('security.role_hierarchy.roles'));
+        $this->assertEquals([
+            'ROLE_ADMIN' => ['ROLE_USER'],
+            'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
+            'ROLE_REMOTE' => ['ROLE_USER', 'ROLE_ADMIN'],
+        ], $container->getParameter('security.role_hierarchy.roles'));
     }
 
     public function testUserProviders()
@@ -56,30 +56,30 @@ public function testUserProviders()
 
         $providers = array_values(array_filter($container->getServiceIds(), function ($key) { return 0 === strpos($key, 'security.user.provider.concrete'); }));
 
-        $expectedProviders = array(
+        $expectedProviders = [
             'security.user.provider.concrete.default',
             'security.user.provider.concrete.digest',
             'security.user.provider.concrete.basic',
             'security.user.provider.concrete.service',
             'security.user.provider.concrete.chain',
-        );
+        ];
 
-        $this->assertEquals(array(), array_diff($expectedProviders, $providers));
-        $this->assertEquals(array(), array_diff($providers, $expectedProviders));
+        $this->assertEquals([], array_diff($expectedProviders, $providers));
+        $this->assertEquals([], array_diff($providers, $expectedProviders));
 
         // chain provider
-        $this->assertEquals(array(new IteratorArgument(array(
+        $this->assertEquals([new IteratorArgument([
             new Reference('security.user.provider.concrete.service'),
             new Reference('security.user.provider.concrete.basic'),
-        ))), $container->getDefinition('security.user.provider.concrete.chain')->getArguments());
+        ])], $container->getDefinition('security.user.provider.concrete.chain')->getArguments());
     }
 
     public function testFirewalls()
     {
         $container = $this->getContainer('container1');
         $arguments = $container->getDefinition('security.firewall.map')->getArguments();
-        $listeners = array();
-        $configs = array();
+        $listeners = [];
+        $configs = [];
         foreach (array_keys($arguments[1]->getValues()) as $contextId) {
             $contextDef = $container->getDefinition($contextId);
             $arguments = $contextDef->getArguments();
@@ -94,14 +94,14 @@ public function testFirewalls()
         $configs[0][2] = strtolower($configs[0][2]);
         $configs[2][2] = strtolower($configs[2][2]);
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 'simple',
                 'security.user_checker',
                 'security.request_matcher.6tndozi',
                 false,
-            ),
-            array(
+            ],
+            [
                 'secure',
                 'security.user_checker',
                 null,
@@ -112,7 +112,7 @@ public function testFirewalls()
                 'security.authentication.form_entry_point.secure',
                 null,
                 null,
-                array(
+                [
                     'switch_user',
                     'x509',
                     'remote_user',
@@ -120,14 +120,14 @@ public function testFirewalls()
                     'http_basic',
                     'remember_me',
                     'anonymous',
-                ),
-                array(
+                ],
+                [
                     'parameter' => '_switch_user',
                     'role' => 'ROLE_ALLOWED_TO_SWITCH',
                     'stateless' => true,
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'host',
                 'security.user_checker',
                 'security.request_matcher.and0kk1',
@@ -138,13 +138,13 @@ public function testFirewalls()
                 'security.authentication.basic_entry_point.host',
                 null,
                 null,
-                array(
+                [
                     'http_basic',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-            array(
+            ],
+            [
                 'with_user_checker',
                 'app.user_checker',
                 null,
@@ -155,13 +155,13 @@ public function testFirewalls()
                 'security.authentication.basic_entry_point.with_user_checker',
                 null,
                 null,
-                array(
+                [
                     'http_basic',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-            array(
+            ],
+            [
                 'simple_auth',
                 'security.user_checker',
                 null,
@@ -172,17 +172,17 @@ public function testFirewalls()
                 'security.authentication.form_entry_point.simple_auth',
                 null,
                 null,
-                array(
+                [
                     'simple_form',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-        ), $configs);
+            ],
+        ], $configs);
 
-        $this->assertEquals(array(
-            array(),
-            array(
+        $this->assertEquals([
+            [],
+            [
                 'security.channel_listener',
                 'security.authentication.listener.x509.secure',
                 'security.authentication.listener.remote_user.secure',
@@ -192,29 +192,29 @@ public function testFirewalls()
                 'security.authentication.listener.anonymous.secure',
                 'security.authentication.switchuser_listener.secure',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.0',
                 'security.authentication.listener.basic.host',
                 'security.authentication.listener.anonymous.host',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.1',
                 'security.authentication.listener.basic.with_user_checker',
                 'security.authentication.listener.anonymous.with_user_checker',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.2',
                 'security.authentication.listener.simple_form.simple_auth',
                 'security.authentication.listener.anonymous.simple_auth',
                 'security.access_listener',
-            ),
-        ), $listeners);
+            ],
+        ], $listeners);
 
         $this->assertFalse($container->hasAlias('Symfony\Component\Security\Core\User\UserCheckerInterface', 'No user checker alias is registered when custom user checker services are registered'));
     }
@@ -226,8 +226,8 @@ public function testFirewallsWithDigest()
     {
         $container = $this->getContainer('container1_with_digest');
         $arguments = $container->getDefinition('security.firewall.map')->getArguments();
-        $listeners = array();
-        $configs = array();
+        $listeners = [];
+        $configs = [];
         foreach (array_keys($arguments[1]->getValues()) as $contextId) {
             $contextDef = $container->getDefinition($contextId);
             $arguments = $contextDef->getArguments();
@@ -242,14 +242,14 @@ public function testFirewallsWithDigest()
         $configs[0][2] = strtolower($configs[0][2]);
         $configs[2][2] = strtolower($configs[2][2]);
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 'simple',
                 'security.user_checker',
                 'security.request_matcher.6tndozi',
                 false,
-            ),
-            array(
+            ],
+            [
                 'secure',
                 'security.user_checker',
                 null,
@@ -260,7 +260,7 @@ public function testFirewallsWithDigest()
                 'security.authentication.form_entry_point.secure',
                 null,
                 null,
-                array(
+                [
                     'switch_user',
                     'x509',
                     'remote_user',
@@ -269,14 +269,14 @@ public function testFirewallsWithDigest()
                     'http_digest',
                     'remember_me',
                     'anonymous',
-                ),
-                array(
+                ],
+                [
                     'parameter' => '_switch_user',
                     'role' => 'ROLE_ALLOWED_TO_SWITCH',
                     'stateless' => true,
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'host',
                 'security.user_checker',
                 'security.request_matcher.and0kk1',
@@ -287,13 +287,13 @@ public function testFirewallsWithDigest()
                 'security.authentication.basic_entry_point.host',
                 null,
                 null,
-                array(
+                [
                     'http_basic',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-            array(
+            ],
+            [
                 'with_user_checker',
                 'app.user_checker',
                 null,
@@ -304,17 +304,17 @@ public function testFirewallsWithDigest()
                 'security.authentication.basic_entry_point.with_user_checker',
                 null,
                 null,
-                array(
+                [
                     'http_basic',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-        ), $configs);
+            ],
+        ], $configs);
 
-        $this->assertEquals(array(
-            array(),
-            array(
+        $this->assertEquals([
+            [],
+            [
                 'security.channel_listener',
                 'security.authentication.listener.x509.secure',
                 'security.authentication.listener.remote_user.secure',
@@ -325,22 +325,22 @@ public function testFirewallsWithDigest()
                 'security.authentication.listener.anonymous.secure',
                 'security.authentication.switchuser_listener.secure',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.0',
                 'security.authentication.listener.basic.host',
                 'security.authentication.listener.anonymous.host',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.1',
                 'security.authentication.listener.basic.with_user_checker',
                 'security.authentication.listener.anonymous.with_user_checker',
                 'security.access_listener',
-            ),
-        ), $listeners);
+            ],
+        ], $listeners);
 
         $this->assertFalse($container->hasAlias('Symfony\Component\Security\Core\User\UserCheckerInterface', 'No user checker alias is registered when custom user checker services are registered'));
     }
@@ -350,7 +350,7 @@ public function testFirewallRequestMatchers()
         $container = $this->getContainer('container1');
 
         $arguments = $container->getDefinition('security.firewall.map')->getArguments();
-        $matchers = array();
+        $matchers = [];
 
         foreach ($arguments[1]->getValues() as $reference) {
             if ($reference instanceof Reference) {
@@ -359,16 +359,16 @@ public function testFirewallRequestMatchers()
             }
         }
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 '/login',
-            ),
-            array(
+            ],
+            [
                 '/test',
                 'foo\\.example\\.org',
-                array('GET', 'POST'),
-            ),
-        ), $matchers);
+                ['GET', 'POST'],
+            ],
+        ], $matchers);
     }
 
     public function testUserCheckerAliasIsRegistered()
@@ -383,14 +383,14 @@ public function testAccess()
     {
         $container = $this->getContainer('container1');
 
-        $rules = array();
+        $rules = [];
         foreach ($container->getDefinition('security.access_map')->getMethodCalls() as $call) {
             if ('add' == $call[0]) {
-                $rules[] = array((string) $call[1][0], $call[1][1], $call[1][2]);
+                $rules[] = [(string) $call[1][0], $call[1][1], $call[1][2]];
             }
         }
 
-        $matcherIds = array();
+        $matcherIds = [];
         foreach ($rules as list($matcherId, $attributes, $channel)) {
             $requestMatcher = $container->getDefinition($matcherId);
 
@@ -399,17 +399,17 @@ public function testAccess()
 
             $i = \count($matcherIds);
             if (1 === $i) {
-                $this->assertEquals(array('ROLE_USER'), $attributes);
+                $this->assertEquals(['ROLE_USER'], $attributes);
                 $this->assertEquals('https', $channel);
                 $this->assertEquals(
-                    array('/blog/524', null, array('GET', 'POST')),
+                    ['/blog/524', null, ['GET', 'POST']],
                     $requestMatcher->getArguments()
                 );
             } elseif (2 === $i) {
-                $this->assertEquals(array('IS_AUTHENTICATED_ANONYMOUSLY'), $attributes);
+                $this->assertEquals(['IS_AUTHENTICATED_ANONYMOUSLY'], $attributes);
                 $this->assertNull($channel);
                 $this->assertEquals(
-                    array('/blog/.*'),
+                    ['/blog/.*'],
                     $requestMatcher->getArguments()
                 );
             } elseif (3 === $i) {
@@ -424,22 +424,22 @@ public function testMerge()
     {
         $container = $this->getContainer('merge');
 
-        $this->assertEquals(array(
-            'FOO' => array('MOO'),
-            'ADMIN' => array('USER'),
-        ), $container->getParameter('security.role_hierarchy.roles'));
+        $this->assertEquals([
+            'FOO' => ['MOO'],
+            'ADMIN' => ['USER'],
+        ], $container->getParameter('security.role_hierarchy.roles'));
     }
 
     public function testEncoders()
     {
         $container = $this->getContainer('container1');
 
-        $this->assertEquals(array(array(
-            'JMS\FooBundle\Entity\User1' => array(
+        $this->assertEquals([[
+            'JMS\FooBundle\Entity\User1' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder',
-                'arguments' => array(false),
-            ),
-            'JMS\FooBundle\Entity\User2' => array(
+                'arguments' => [false],
+            ],
+            'JMS\FooBundle\Entity\User2' => [
                 'algorithm' => 'sha1',
                 'encode_as_base64' => false,
                 'iterations' => 5,
@@ -447,8 +447,8 @@ public function testEncoders()
                 'key_length' => 40,
                 'ignore_case' => false,
                 'cost' => 13,
-            ),
-            'JMS\FooBundle\Entity\User3' => array(
+            ],
+            'JMS\FooBundle\Entity\User3' => [
                 'algorithm' => 'md5',
                 'hash_algorithm' => 'sha512',
                 'key_length' => 40,
@@ -456,17 +456,17 @@ public function testEncoders()
                 'encode_as_base64' => true,
                 'iterations' => 5000,
                 'cost' => 13,
-            ),
+            ],
             'JMS\FooBundle\Entity\User4' => new Reference('security.encoder.foo'),
-            'JMS\FooBundle\Entity\User5' => array(
+            'JMS\FooBundle\Entity\User5' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Pbkdf2PasswordEncoder',
-                'arguments' => array('sha1', false, 5, 30),
-            ),
-            'JMS\FooBundle\Entity\User6' => array(
+                'arguments' => ['sha1', false, 5, 30],
+            ],
+            'JMS\FooBundle\Entity\User6' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder',
-                'arguments' => array(15),
-            ),
-        )), $container->getDefinition('security.encoder_factory.generic')->getArguments());
+                'arguments' => [15],
+            ],
+        ]], $container->getDefinition('security.encoder_factory.generic')->getArguments());
     }
 
     public function testArgon2iEncoder()
@@ -475,10 +475,10 @@ public function testArgon2iEncoder()
             $this->markTestSkipped('Argon2i algorithm is not supported.');
         }
 
-        $this->assertSame(array(array('JMS\FooBundle\Entity\User7' => array(
+        $this->assertSame([['JMS\FooBundle\Entity\User7' => [
             'class' => 'Symfony\Component\Security\Core\Encoder\Argon2iPasswordEncoder',
-            'arguments' => array(),
-        ))), $this->getContainer('argon2i_encoder')->getDefinition('security.encoder_factory.generic')->getArguments());
+            'arguments' => [],
+        ]]], $this->getContainer('argon2i_encoder')->getDefinition('security.encoder_factory.generic')->getArguments());
     }
 
     /**
@@ -615,8 +615,8 @@ protected function getContainer($file)
         $bundle->build($container); // Attach all default factories
         $this->getLoader($container)->load($file);
 
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         return $container;
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_customized_config.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_customized_config.php
index cd3cc1200075..1d0a090f3f58 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_customized_config.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_customized_config.php
@@ -1,20 +1,20 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'access_decision_manager' => array(
+$container->loadFromExtension('security', [
+    'access_decision_manager' => [
         'allow_if_all_abstain' => true,
         'allow_if_equal_granted_denied' => false,
-    ),
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'simple' => array('pattern' => '/login', 'security' => false),
-    ),
-));
+    ],
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'simple' => ['pattern' => '/login', 'security' => false],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_default_strategy.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_default_strategy.php
index d06fc3e686af..1f0adbf3010f 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_default_strategy.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_default_strategy.php
@@ -1,16 +1,16 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'simple' => array('pattern' => '/login', 'security' => false),
-    ),
-));
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'simple' => ['pattern' => '/login', 'security' => false],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_service.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_service.php
index 29db53936264..8f615904ddf0 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_service.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_service.php
@@ -1,19 +1,19 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'access_decision_manager' => array(
+$container->loadFromExtension('security', [
+    'access_decision_manager' => [
         'service' => 'app.access_decision_manager',
-    ),
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'simple' => array('pattern' => '/login', 'security' => false),
-    ),
-));
+    ],
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'simple' => ['pattern' => '/login', 'security' => false],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_service_and_strategy.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_service_and_strategy.php
index f7175e21f6fc..bd78bdf24d57 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_service_and_strategy.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/access_decision_manager_service_and_strategy.php
@@ -1,20 +1,20 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'access_decision_manager' => array(
+$container->loadFromExtension('security', [
+    'access_decision_manager' => [
         'service' => 'app.access_decision_manager',
         'strategy' => 'affirmative',
-    ),
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'simple' => array('pattern' => '/login', 'security' => false),
-    ),
-));
+    ],
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'simple' => ['pattern' => '/login', 'security' => false],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/argon2i_encoder.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/argon2i_encoder.php
index 23ff1799c830..ebc633fa33c6 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/argon2i_encoder.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/argon2i_encoder.php
@@ -1,19 +1,19 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'encoders' => array(
-        'JMS\FooBundle\Entity\User7' => array(
+$container->loadFromExtension('security', [
+    'encoders' => [
+        'JMS\FooBundle\Entity\User7' => [
             'algorithm' => 'argon2i',
-        ),
-    ),
-    'providers' => array(
-        'default' => array('id' => 'foo'),
-    ),
-    'firewalls' => array(
-        'main' => array(
+        ],
+    ],
+    'providers' => [
+        'default' => ['id' => 'foo'],
+    ],
+    'firewalls' => [
+        'main' => [
             'form_login' => false,
             'http_basic' => null,
             'logout_on_user_change' => true,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
index c8c1373609e7..9bd75ab33c25 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
@@ -1,112 +1,112 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'encoders' => array(
+$container->loadFromExtension('security', [
+    'encoders' => [
         'JMS\FooBundle\Entity\User1' => 'plaintext',
-        'JMS\FooBundle\Entity\User2' => array(
+        'JMS\FooBundle\Entity\User2' => [
             'algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
-        ),
-        'JMS\FooBundle\Entity\User3' => array(
+        ],
+        'JMS\FooBundle\Entity\User3' => [
             'algorithm' => 'md5',
-        ),
-        'JMS\FooBundle\Entity\User4' => array(
+        ],
+        'JMS\FooBundle\Entity\User4' => [
             'id' => 'security.encoder.foo',
-        ),
-        'JMS\FooBundle\Entity\User5' => array(
+        ],
+        'JMS\FooBundle\Entity\User5' => [
             'algorithm' => 'pbkdf2',
             'hash_algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
             'key_length' => 30,
-        ),
-        'JMS\FooBundle\Entity\User6' => array(
+        ],
+        'JMS\FooBundle\Entity\User6' => [
             'algorithm' => 'bcrypt',
             'cost' => 15,
-        ),
-    ),
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-        'digest' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'),
-                ),
-            ),
-        ),
-        'basic' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'),
-                    'bar' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => array('ROLE_USER', 'ROLE_ADMIN')),
-                ),
-            ),
-        ),
-        'service' => array(
+        ],
+    ],
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+        'digest' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'],
+                ],
+            ],
+        ],
+        'basic' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'],
+                    'bar' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => ['ROLE_USER', 'ROLE_ADMIN']],
+                ],
+            ],
+        ],
+        'service' => [
             'id' => 'user.manager',
-        ),
-        'chain' => array(
-            'chain' => array(
-                'providers' => array('service', 'basic'),
-            ),
-        ),
-    ),
+        ],
+        'chain' => [
+            'chain' => [
+                'providers' => ['service', 'basic'],
+            ],
+        ],
+    ],
 
-    'firewalls' => array(
-        'simple' => array('provider' => 'default', 'pattern' => '/login', 'security' => false),
-        'secure' => array('stateless' => true,
+    'firewalls' => [
+        'simple' => ['provider' => 'default', 'pattern' => '/login', 'security' => false],
+        'secure' => ['stateless' => true,
             'provider' => 'default',
             'http_basic' => true,
             'form_login' => true,
             'anonymous' => true,
-            'switch_user' => array('stateless' => true),
+            'switch_user' => ['stateless' => true],
             'x509' => true,
             'remote_user' => true,
             'logout' => true,
-            'remember_me' => array('secret' => 'TheSecret'),
+            'remember_me' => ['secret' => 'TheSecret'],
             'user_checker' => null,
             'logout_on_user_change' => true,
-        ),
-        'host' => array(
+        ],
+        'host' => [
             'provider' => 'default',
             'pattern' => '/test',
             'host' => 'foo\\.example\\.org',
-            'methods' => array('GET', 'POST'),
+            'methods' => ['GET', 'POST'],
             'anonymous' => true,
             'http_basic' => true,
             'logout_on_user_change' => true,
-        ),
-        'with_user_checker' => array(
+        ],
+        'with_user_checker' => [
             'provider' => 'default',
             'user_checker' => 'app.user_checker',
             'anonymous' => true,
             'http_basic' => true,
             'logout_on_user_change' => true,
-        ),
-        'simple_auth' => array(
+        ],
+        'simple_auth' => [
             'provider' => 'default',
             'anonymous' => true,
-            'simple_form' => array('authenticator' => 'simple_authenticator'),
+            'simple_form' => ['authenticator' => 'simple_authenticator'],
             'logout_on_user_change' => true,
-        ),
-    ),
+        ],
+    ],
 
-    'access_control' => array(
-        array('path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => array('get', 'POST')),
-        array('path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'),
-        array('path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"),
-    ),
+    'access_control' => [
+        ['path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => ['get', 'POST']],
+        ['path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'],
+        ['path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"],
+    ],
 
-    'role_hierarchy' => array(
+    'role_hierarchy' => [
         'ROLE_ADMIN' => 'ROLE_USER',
-        'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
+        'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
         'ROLE_REMOTE' => 'ROLE_USER,ROLE_ADMIN',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1_with_acl.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1_with_acl.php
index 28e276b23855..0f17e7b851b0 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1_with_acl.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1_with_acl.php
@@ -1,105 +1,105 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'acl' => array(),
-    'encoders' => array(
+$container->loadFromExtension('security', [
+    'acl' => [],
+    'encoders' => [
         'JMS\FooBundle\Entity\User1' => 'plaintext',
-        'JMS\FooBundle\Entity\User2' => array(
+        'JMS\FooBundle\Entity\User2' => [
             'algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
-        ),
-        'JMS\FooBundle\Entity\User3' => array(
+        ],
+        'JMS\FooBundle\Entity\User3' => [
             'algorithm' => 'md5',
-        ),
-        'JMS\FooBundle\Entity\User4' => array(
+        ],
+        'JMS\FooBundle\Entity\User4' => [
             'id' => 'security.encoder.foo',
-        ),
-        'JMS\FooBundle\Entity\User5' => array(
+        ],
+        'JMS\FooBundle\Entity\User5' => [
             'algorithm' => 'pbkdf2',
             'hash_algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
             'key_length' => 30,
-        ),
-        'JMS\FooBundle\Entity\User6' => array(
+        ],
+        'JMS\FooBundle\Entity\User6' => [
             'algorithm' => 'bcrypt',
             'cost' => 15,
-        ),
-    ),
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-        'digest' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'),
-                ),
-            ),
-        ),
-        'basic' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'),
-                    'bar' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => array('ROLE_USER', 'ROLE_ADMIN')),
-                ),
-            ),
-        ),
-        'service' => array(
+        ],
+    ],
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+        'digest' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'],
+                ],
+            ],
+        ],
+        'basic' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'],
+                    'bar' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => ['ROLE_USER', 'ROLE_ADMIN']],
+                ],
+            ],
+        ],
+        'service' => [
             'id' => 'user.manager',
-        ),
-        'chain' => array(
-            'chain' => array(
-                'providers' => array('service', 'basic'),
-            ),
-        ),
-    ),
+        ],
+        'chain' => [
+            'chain' => [
+                'providers' => ['service', 'basic'],
+            ],
+        ],
+    ],
 
-    'firewalls' => array(
-        'simple' => array('provider' => 'default', 'pattern' => '/login', 'security' => false),
-        'secure' => array('stateless' => true,
+    'firewalls' => [
+        'simple' => ['provider' => 'default', 'pattern' => '/login', 'security' => false],
+        'secure' => ['stateless' => true,
             'provider' => 'default',
             'http_basic' => true,
-            'http_digest' => array('secret' => 'TheSecret'),
+            'http_digest' => ['secret' => 'TheSecret'],
             'form_login' => true,
             'anonymous' => true,
-            'switch_user' => array('stateless' => true),
+            'switch_user' => ['stateless' => true],
             'x509' => true,
             'remote_user' => true,
             'logout' => true,
-            'remember_me' => array('secret' => 'TheSecret'),
+            'remember_me' => ['secret' => 'TheSecret'],
             'user_checker' => null,
-        ),
-        'host' => array(
+        ],
+        'host' => [
             'provider' => 'default',
             'pattern' => '/test',
             'host' => 'foo\\.example\\.org',
-            'methods' => array('GET', 'POST'),
+            'methods' => ['GET', 'POST'],
             'anonymous' => true,
             'http_basic' => true,
-        ),
-        'with_user_checker' => array(
+        ],
+        'with_user_checker' => [
             'provider' => 'default',
             'user_checker' => 'app.user_checker',
             'anonymous' => true,
             'http_basic' => true,
-        ),
-    ),
+        ],
+    ],
 
-    'access_control' => array(
-        array('path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => array('get', 'POST')),
-        array('path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'),
-        array('path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"),
-    ),
+    'access_control' => [
+        ['path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => ['get', 'POST']],
+        ['path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'],
+        ['path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"],
+    ],
 
-    'role_hierarchy' => array(
+    'role_hierarchy' => [
         'ROLE_ADMIN' => 'ROLE_USER',
-        'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
+        'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
         'ROLE_REMOTE' => 'ROLE_USER,ROLE_ADMIN',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1_with_digest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1_with_digest.php
index 46f3efa4e5d6..8bc81f929c14 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1_with_digest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1_with_digest.php
@@ -1,108 +1,108 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'acl' => array(),
-    'encoders' => array(
+$container->loadFromExtension('security', [
+    'acl' => [],
+    'encoders' => [
         'JMS\FooBundle\Entity\User1' => 'plaintext',
-        'JMS\FooBundle\Entity\User2' => array(
+        'JMS\FooBundle\Entity\User2' => [
             'algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
-        ),
-        'JMS\FooBundle\Entity\User3' => array(
+        ],
+        'JMS\FooBundle\Entity\User3' => [
             'algorithm' => 'md5',
-        ),
-        'JMS\FooBundle\Entity\User4' => array(
+        ],
+        'JMS\FooBundle\Entity\User4' => [
             'id' => 'security.encoder.foo',
-        ),
-        'JMS\FooBundle\Entity\User5' => array(
+        ],
+        'JMS\FooBundle\Entity\User5' => [
             'algorithm' => 'pbkdf2',
             'hash_algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
             'key_length' => 30,
-        ),
-        'JMS\FooBundle\Entity\User6' => array(
+        ],
+        'JMS\FooBundle\Entity\User6' => [
             'algorithm' => 'bcrypt',
             'cost' => 15,
-        ),
-    ),
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-        'digest' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'),
-                ),
-            ),
-        ),
-        'basic' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'),
-                    'bar' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => array('ROLE_USER', 'ROLE_ADMIN')),
-                ),
-            ),
-        ),
-        'service' => array(
+        ],
+    ],
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+        'digest' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'],
+                ],
+            ],
+        ],
+        'basic' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'],
+                    'bar' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => ['ROLE_USER', 'ROLE_ADMIN']],
+                ],
+            ],
+        ],
+        'service' => [
             'id' => 'user.manager',
-        ),
-        'chain' => array(
-            'chain' => array(
-                'providers' => array('service', 'basic'),
-            ),
-        ),
-    ),
+        ],
+        'chain' => [
+            'chain' => [
+                'providers' => ['service', 'basic'],
+            ],
+        ],
+    ],
 
-    'firewalls' => array(
-        'simple' => array('provider' => 'default', 'pattern' => '/login', 'security' => false),
-        'secure' => array('stateless' => true,
+    'firewalls' => [
+        'simple' => ['provider' => 'default', 'pattern' => '/login', 'security' => false],
+        'secure' => ['stateless' => true,
             'provider' => 'default',
             'http_basic' => true,
-            'http_digest' => array('secret' => 'TheSecret'),
+            'http_digest' => ['secret' => 'TheSecret'],
             'form_login' => true,
             'anonymous' => true,
-            'switch_user' => array('stateless' => true),
+            'switch_user' => ['stateless' => true],
             'x509' => true,
             'remote_user' => true,
             'logout' => true,
-            'remember_me' => array('secret' => 'TheSecret'),
+            'remember_me' => ['secret' => 'TheSecret'],
             'user_checker' => null,
             'logout_on_user_change' => true,
-        ),
-        'host' => array(
+        ],
+        'host' => [
             'provider' => 'default',
             'pattern' => '/test',
             'host' => 'foo\\.example\\.org',
-            'methods' => array('GET', 'POST'),
+            'methods' => ['GET', 'POST'],
             'anonymous' => true,
             'http_basic' => true,
             'logout_on_user_change' => true,
-        ),
-        'with_user_checker' => array(
+        ],
+        'with_user_checker' => [
             'provider' => 'default',
             'user_checker' => 'app.user_checker',
             'anonymous' => true,
             'http_basic' => true,
             'logout_on_user_change' => true,
-        ),
-    ),
+        ],
+    ],
 
-    'access_control' => array(
-        array('path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => array('get', 'POST')),
-        array('path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'),
-        array('path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"),
-    ),
+    'access_control' => [
+        ['path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => ['get', 'POST']],
+        ['path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'],
+        ['path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"],
+    ],
 
-    'role_hierarchy' => array(
+    'role_hierarchy' => [
         'ROLE_ADMIN' => 'ROLE_USER',
-        'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
+        'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
         'ROLE_REMOTE' => 'ROLE_USER,ROLE_ADMIN',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/custom_acl_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/custom_acl_provider.php
index 351dc6c09e1a..a8af0690bf61 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/custom_acl_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/custom_acl_provider.php
@@ -2,8 +2,8 @@
 
 $this->load('container1.php', $container);
 
-$container->loadFromExtension('security', array(
-    'acl' => array(
+$container->loadFromExtension('security', [
+    'acl' => [
         'provider' => 'foo',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_provider.php
index da218fc61c9c..c530e7673817 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_provider.php
@@ -1,26 +1,26 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => $memory = array(
-                'users' => array('foo' => array('password' => 'foo', 'roles' => 'ROLE_USER')),
-            ),
-        ),
-        'with-dash' => array(
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => $memory = [
+                'users' => ['foo' => ['password' => 'foo', 'roles' => 'ROLE_USER']],
+            ],
+        ],
+        'with-dash' => [
             'memory' => $memory,
-        ),
-    ),
-    'firewalls' => array(
-        'main' => array(
+        ],
+    ],
+    'firewalls' => [
+        'main' => [
             'provider' => 'default',
             'form_login' => true,
             'logout_on_user_change' => true,
-        ),
-        'other' => array(
+        ],
+        'other' => [
             'provider' => 'with-dash',
             'form_login' => true,
             'logout_on_user_change' => true,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_undefined_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_undefined_provider.php
index 46a51f91fdd2..39fbedd2ec0b 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_undefined_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_undefined_provider.php
@@ -1,18 +1,18 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array('foo' => array('password' => 'foo', 'roles' => 'ROLE_USER')),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'main' => array(
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => ['foo' => ['password' => 'foo', 'roles' => 'ROLE_USER']],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'main' => [
             'provider' => 'undefined',
             'form_login' => true,
             'logout_on_user_change' => true,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_provider.php
index 072b70b078a5..09d97c917c3a 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_provider.php
@@ -1,17 +1,17 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array('foo' => array('password' => 'foo', 'roles' => 'ROLE_USER')),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'main' => array(
-            'form_login' => array('provider' => 'default'),
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => ['foo' => ['password' => 'foo', 'roles' => 'ROLE_USER']],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'main' => [
+            'form_login' => ['provider' => 'default'],
             'logout_on_user_change' => true,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_undefined_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_undefined_provider.php
index 567f8a0d4b2d..59b209989292 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_undefined_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_undefined_provider.php
@@ -1,17 +1,17 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array('foo' => array('password' => 'foo', 'roles' => 'ROLE_USER')),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'main' => array(
-            'form_login' => array('provider' => 'undefined'),
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => ['foo' => ['password' => 'foo', 'roles' => 'ROLE_USER']],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'main' => [
+            'form_login' => ['provider' => 'undefined'],
             'logout_on_user_change' => true,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
index eb34a6a6f64b..3e1541a0e56e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
@@ -2,20 +2,20 @@
 
 $this->load('merge_import.php', $container);
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array('id' => 'foo'),
-    ),
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => ['id' => 'foo'],
+    ],
 
-    'firewalls' => array(
-        'main' => array(
+    'firewalls' => [
+        'main' => [
             'form_login' => false,
             'http_basic' => null,
             'logout_on_user_change' => true,
-        ),
-    ),
+        ],
+    ],
 
-    'role_hierarchy' => array(
-        'FOO' => array('MOO'),
-    ),
-));
+    'role_hierarchy' => [
+        'FOO' => ['MOO'],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge_import.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge_import.php
index 6ed2d18a3670..8113f580d93c 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge_import.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge_import.php
@@ -1,16 +1,16 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'firewalls' => array(
-        'main' => array(
-            'form_login' => array(
+$container->loadFromExtension('security', [
+    'firewalls' => [
+        'main' => [
+            'form_login' => [
                 'login_path' => '/login',
-            ),
+            ],
         'logout_on_user_change' => true,
-        ),
-    ),
-    'role_hierarchy' => array(
+        ],
+    ],
+    'role_hierarchy' => [
         'FOO' => 'BAR',
         'ADMIN' => 'USER',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/no_custom_user_checker.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/no_custom_user_checker.php
index 2724be3e2804..b3dee85be0c0 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/no_custom_user_checker.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/no_custom_user_checker.php
@@ -1,28 +1,28 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'simple' => array('pattern' => '/login', 'security' => false),
-        'secure' => array(
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'simple' => ['pattern' => '/login', 'security' => false],
+        'secure' => [
             'stateless' => true,
             'http_basic' => true,
             'form_login' => true,
             'anonymous' => true,
-            'switch_user' => array('stateless' => true),
+            'switch_user' => ['stateless' => true],
             'x509' => true,
             'remote_user' => true,
             'logout' => true,
-            'remember_me' => array('secret' => 'TheSecret'),
+            'remember_me' => ['secret' => 'TheSecret'],
             'user_checker' => null,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/remember_me_options.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/remember_me_options.php
index a61fde3dc730..1e51cdecfd76 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/remember_me_options.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/remember_me_options.php
@@ -1,19 +1,19 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array('id' => 'foo'),
-    ),
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => ['id' => 'foo'],
+    ],
 
-    'firewalls' => array(
-        'main' => array(
+    'firewalls' => [
+        'main' => [
             'form_login' => true,
-            'remember_me' => array(
+            'remember_me' => [
                 'secret' => 'TheSecret',
                 'catch_exceptions' => false,
                 'token_provider' => 'token_provider_id',
-            ),
+            ],
             'logout_on_user_change' => true,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/MainConfigurationTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/MainConfigurationTest.php
index ef465e82bd7c..d7566df0fa5c 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/MainConfigurationTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/MainConfigurationTest.php
@@ -21,32 +21,32 @@ class MainConfigurationTest extends TestCase
      * The minimal, required config needed to not have any required validation
      * issues.
      */
-    protected static $minimalConfig = array(
-        'providers' => array(
-            'stub' => array(
+    protected static $minimalConfig = [
+        'providers' => [
+            'stub' => [
                 'id' => 'foo',
-            ),
-        ),
-        'firewalls' => array(
-            'stub' => array(),
+            ],
+        ],
+        'firewalls' => [
+            'stub' => [],
             'logout_on_user_change' => true,
-        ),
-    );
+        ],
+    ];
 
     /**
      * @expectedException \Symfony\Component\Config\Definition\Exception\InvalidConfigurationException
      */
     public function testNoConfigForProvider()
     {
-        $config = array(
-            'providers' => array(
-                'stub' => array(),
-            ),
-        );
+        $config = [
+            'providers' => [
+                'stub' => [],
+            ],
+        ];
 
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processor->processConfiguration($configuration, array($config));
+        $configuration = new MainConfiguration([], []);
+        $processor->processConfiguration($configuration, [$config]);
     }
 
     /**
@@ -54,38 +54,38 @@ public function testNoConfigForProvider()
      */
     public function testManyConfigForProvider()
     {
-        $config = array(
-            'providers' => array(
-                'stub' => array(
+        $config = [
+            'providers' => [
+                'stub' => [
                     'id' => 'foo',
-                    'chain' => array(),
-                ),
-            ),
-        );
+                    'chain' => [],
+                ],
+            ],
+        ];
 
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processor->processConfiguration($configuration, array($config));
+        $configuration = new MainConfiguration([], []);
+        $processor->processConfiguration($configuration, [$config]);
     }
 
     public function testCsrfAliases()
     {
-        $config = array(
-            'firewalls' => array(
-                'stub' => array(
-                    'logout' => array(
+        $config = [
+            'firewalls' => [
+                'stub' => [
+                    'logout' => [
                         'csrf_token_generator' => 'a_token_generator',
                         'csrf_token_id' => 'a_token_id',
-                    ),
+                    ],
                     'logout_on_user_change' => true,
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $config = array_merge(static::$minimalConfig, $config);
 
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processedConfig = $processor->processConfiguration($configuration, array($config));
+        $configuration = new MainConfiguration([], []);
+        $processedConfig = $processor->processConfiguration($configuration, [$config]);
         $this->assertArrayHasKey('csrf_token_generator', $processedConfig['firewalls']['stub']['logout']);
         $this->assertEquals('a_token_generator', $processedConfig['firewalls']['stub']['logout']['csrf_token_generator']);
         $this->assertArrayHasKey('csrf_token_id', $processedConfig['firewalls']['stub']['logout']);
@@ -95,27 +95,27 @@ public function testCsrfAliases()
     public function testDefaultUserCheckers()
     {
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processedConfig = $processor->processConfiguration($configuration, array(static::$minimalConfig));
+        $configuration = new MainConfiguration([], []);
+        $processedConfig = $processor->processConfiguration($configuration, [static::$minimalConfig]);
 
         $this->assertEquals('security.user_checker', $processedConfig['firewalls']['stub']['user_checker']);
     }
 
     public function testUserCheckers()
     {
-        $config = array(
-            'firewalls' => array(
-                'stub' => array(
+        $config = [
+            'firewalls' => [
+                'stub' => [
                     'user_checker' => 'app.henk_checker',
                     'logout_on_user_change' => true,
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $config = array_merge(static::$minimalConfig, $config);
 
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processedConfig = $processor->processConfiguration($configuration, array($config));
+        $configuration = new MainConfiguration([], []);
+        $processedConfig = $processor->processConfiguration($configuration, [$config]);
 
         $this->assertEquals('app.henk_checker', $processedConfig['firewalls']['stub']['user_checker']);
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Security/Factory/AbstractFactoryTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Security/Factory/AbstractFactoryTest.php
index a367a6768230..ca82e805c3cd 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Security/Factory/AbstractFactoryTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Security/Factory/AbstractFactoryTest.php
@@ -19,13 +19,13 @@ class AbstractFactoryTest extends TestCase
 {
     public function testCreate()
     {
-        list($container, $authProviderId, $listenerId, $entryPointId) = $this->callFactory('foo', array(
+        list($container, $authProviderId, $listenerId, $entryPointId) = $this->callFactory('foo', [
             'use_forward' => true,
             'failure_path' => '/foo',
             'success_handler' => 'custom_success_handler',
             'failure_handler' => 'custom_failure_handler',
             'remember_me' => true,
-        ), 'user_provider', 'entry_point');
+        ], 'user_provider', 'entry_point');
 
         // auth provider
         $this->assertEquals('auth_provider', $authProviderId);
@@ -34,14 +34,14 @@ public function testCreate()
         $this->assertEquals('abstract_listener.foo', $listenerId);
         $this->assertTrue($container->hasDefinition('abstract_listener.foo'));
         $definition = $container->getDefinition('abstract_listener.foo');
-        $this->assertEquals(array(
+        $this->assertEquals([
             'index_4' => 'foo',
             'index_5' => new Reference('security.authentication.success_handler.foo.abstract_factory'),
             'index_6' => new Reference('security.authentication.failure_handler.foo.abstract_factory'),
-            'index_7' => array(
+            'index_7' => [
                 'use_forward' => true,
-            ),
-        ), $definition->getArguments());
+            ],
+        ], $definition->getArguments());
 
         // entry poin
10000
t
         $this->assertEquals('entry_point', $entryPointId, '->create() does not change the default entry point.');
@@ -52,10 +52,10 @@ public function testCreate()
      */
     public function testDefaultFailureHandler($serviceId, $defaultHandlerInjection)
     {
-        $options = array(
+        $options = [
             'remember_me' => true,
             'login_path' => '/bar',
-        );
+        ];
 
         if ($serviceId) {
             $options['failure_handler'] = $serviceId;
@@ -71,7 +71,7 @@ public function testDefaultFailureHandler($serviceId, $defaultHandlerInjection)
         $methodCalls = $failureHandler->getMethodCalls();
         if ($defaultHandlerInjection) {
             $this->assertEquals('setOptions', $methodCalls[0][0]);
-            $this->assertEquals(array('login_path' => '/bar'), $methodCalls[0][1][0]);
+            $this->assertEquals(['login_path' => '/bar'], $methodCalls[0][1][0]);
         } else {
             $this->assertCount(0, $methodCalls);
         }
@@ -79,10 +79,10 @@ public function testDefaultFailureHandler($serviceId, $defaultHandlerInjection)
 
     public function getFailureHandlers()
     {
-        return array(
-            array(null, true),
-            array('custom_failure_handler', false),
-        );
+        return [
+            [null, true],
+            ['custom_failure_handler', false],
+        ];
     }
 
     /**
@@ -90,10 +90,10 @@ public function getFailureHandlers()
      */
     public function testDefaultSuccessHandler($serviceId, $defaultHandlerInjection)
     {
-        $options = array(
+        $options = [
             'remember_me' => true,
             'default_target_path' => '/bar',
-        );
+        ];
 
         if ($serviceId) {
             $options['success_handler'] = $serviceId;
@@ -109,9 +109,9 @@ public function testDefaultSuccessHandler($serviceId, $defaultHandlerInjection)
 
         if ($defaultHandlerInjection) {
             $this->assertEquals('setOptions', $methodCalls[0][0]);
-            $this->assertEquals(array('default_target_path' => '/bar'), $methodCalls[0][1][0]);
+            $this->assertEquals(['default_target_path' => '/bar'], $methodCalls[0][1][0]);
             $this->assertEquals('setProviderKey', $methodCalls[1][0]);
-            $this->assertEquals(array('foo'), $methodCalls[1][1]);
+            $this->assertEquals(['foo'], $methodCalls[1][1]);
         } else {
             $this->assertCount(0, $methodCalls);
         }
@@ -119,15 +119,15 @@ public function testDefaultSuccessHandler($serviceId, $defaultHandlerInjection)
 
     public function getSuccessHandlers()
     {
-        return array(
-            array(null, true),
-            array('custom_success_handler', false),
-        );
+        return [
+            [null, true],
+            ['custom_success_handler', false],
+        ];
     }
 
     protected function callFactory($id, $config, $userProviderId, $defaultEntryPointId)
     {
-        $factory = $this->getMockForAbstractClass('Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\AbstractFactory', array());
+        $factory = $this->getMockForAbstractClass('Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\AbstractFactory', []);
 
         $factory
             ->expects($this->once())
@@ -152,6 +152,6 @@ protected function callFactory($id, $config, $userProviderId, $defaultEntryPoint
 
         list($authProviderId, $listenerId, $entryPointId) = $factory->create($container, $id, $config, $userProviderId, $defaultEntryPointId);
 
-        return array($container, $authProviderId, $listenerId, $entryPointId);
+        return [$container, $authProviderId, $listenerId, $entryPointId];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Security/Factory/GuardAuthenticationFactoryTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Security/Factory/GuardAuthenticationFactoryTest.php
index 55a3ad387c22..81db40412a30 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Security/Factory/GuardAuthenticationFactoryTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Security/Factory/GuardAuthenticationFactoryTest.php
@@ -54,44 +54,44 @@ public function testAddInvalidConfiguration(array $inputConfig)
 
     public function getValidConfigurationTests()
     {
-        $tests = array();
+        $tests = [];
 
         // completely basic
-        $tests[] = array(
-            array(
-                'authenticators' => array('authenticator1', 'authenticator2'),
+        $tests[] = [
+            [
+                'authenticators' => ['authenticator1', 'authenticator2'],
                 'provider' => 'some_provider',
                 'entry_point' => 'the_entry_point',
-            ),
-            array(
-                'authenticators' => array('authenticator1', 'authenticator2'),
+            ],
+            [
+                'authenticators' => ['authenticator1', 'authenticator2'],
                 'provider' => 'some_provider',
                 'entry_point' => 'the_entry_point',
-            ),
-        );
+            ],
+        ];
 
         // testing xml config fix: authenticator -> authenticators
-        $tests[] = array(
-            array(
-                'authenticator' => array('authenticator1', 'authenticator2'),
-            ),
-            array(
-                'authenticators' => array('authenticator1', 'authenticator2'),
+        $tests[] = [
+            [
+                'authenticator' => ['authenticator1', 'authenticator2'],
+            ],
+            [
+                'authenticators' => ['authenticator1', 'authenticator2'],
                 'entry_point' => null,
-            ),
-        );
+            ],
+        ];
 
         return $tests;
     }
 
     public function getInvalidConfigurationTests()
     {
-        $tests = array();
+        $tests = [];
 
         // testing not empty
-        $tests[] = array(
-            array('authenticators' => array()),
-        );
+        $tests[] = [
+            ['authenticators' => []],
+        ];
 
         return $tests;
     }
@@ -99,33 +99,33 @@ public function getInvalidConfigurationTests()
     public function testBasicCreate()
     {
         // simple configuration
-        $config = array(
-            'authenticators' => array('authenticator123'),
+        $config = [
+            'authenticators' => ['authenticator123'],
             'entry_point' => null,
-        );
+        ];
         list($container, $entryPointId) = $this->executeCreate($config, null);
         $this->assertEquals('authenticator123', $entryPointId);
 
         $providerDefinition = $container->getDefinition('security.authentication.provider.guard.my_firewall');
-        $this->assertEquals(array(
-            'index_0' => new IteratorArgument(array(new Reference('authenticator123'))),
+        $this->assertEquals([
+            'index_0' => new IteratorArgument([new Reference('authenticator123')]),
             'index_1' => new Reference('my_user_provider'),
             'index_2' => 'my_firewall',
             'index_3' => new Reference('security.user_checker.my_firewall'),
-        ), $providerDefinition->getArguments());
+        ], $providerDefinition->getArguments());
 
         $listenerDefinition = $container->getDefinition('security.authentication.listener.guard.my_firewall');
         $this->assertEquals('my_firewall', $listenerDefinition->getArgument(2));
-        $this->assertEquals(array(new Reference('authenticator123')), $listenerDefinition->getArgument(3)->getValues());
+        $this->assertEquals([new Reference('authenticator123')], $listenerDefinition->getArgument(3)->getValues());
     }
 
     public function testExistingDefaultEntryPointUsed()
     {
         // any existing default entry point is used
-        $config = array(
-            'authenticators' => array('authenticator123'),
+        $config = [
+            'authenticators' => ['authenticator123'],
             'entry_point' => null,
-        );
+        ];
         list(, $entryPointId) = $this->executeCreate($config, 'some_default_entry_point');
         $this->assertEquals('some_default_entry_point', $entryPointId);
     }
@@ -136,10 +136,10 @@ public function testExistingDefaultEntryPointUsed()
     public function testCannotOverrideDefaultEntryPoint()
     {
         // any existing default entry point is used
-        $config = array(
-            'authenticators' => array('authenticator123'),
+        $config = [
+            'authenticators' => ['authenticator123'],
             'entry_point' => 'authenticator123',
-        );
+        ];
         $this->executeCreate($config, 'some_default_entry_point');
     }
 
@@ -149,20 +149,20 @@ public function testCannotOverrideDefaultEntryPoint()
     public function testMultipleAuthenticatorsRequiresEntryPoint()
     {
         // any existing default entry point is used
-        $config = array(
-            'authenticators' => array('authenticator123', 'authenticatorABC'),
+        $config = [
+            'authenticators' => ['authenticator123', 'authenticatorABC'],
             'entry_point' => null,
-        );
+        ];
         $this->executeCreate($config, null);
     }
 
     public function testCreateWithEntryPoint()
     {
         // any existing default entry point is used
-        $config = array(
-            'authenticators' => array('authenticator123', 'authenticatorABC'),
+        $config = [
+            'authenticators' => ['authenticator123', 'authenticatorABC'],
             'entry_point' => 'authenticatorABC',
-        );
+        ];
         list($container, $entryPointId) = $this->executeCreate($config, null);
         $this->assertEquals('authenticatorABC', $entryPointId);
     }
@@ -178,6 +178,6 @@ private function executeCreate(array $config, $defaultEntryPointId)
         $factory = new GuardAuthenticationFactory();
         list($providerId, $listenerId, $entryPointId) = $factory->create($container, $id, $config, $userProviderId, $defaultEntryPointId);
 
-        return array($container, $entryPointId);
+        return [$container, $entryPointId];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
index 45354b15fdd9..8372e34c0eb9 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
@@ -27,21 +27,21 @@ public function testInvalidCheckPath()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/secured_area/.*',
-                    'form_login' => array(
+                    'form_login' => [
                         'check_path' => '/some_area/login_check',
-                    ),
+                    ],
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -54,18 +54,18 @@ public function testFirewallWithoutAuthenticationListener()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -81,19 +81,19 @@ public function testFirewallWithInvalidUserProvider()
         $extension = $container->getExtension('security');
         $extension->addUserProviderFactory(new DummyProvider());
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'my_foo' => array('foo' => array()),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'my_foo' => ['foo' => []],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
-                    'http_basic' => array(),
+                    'http_basic' => [],
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -102,21 +102,21 @@ public function testDisableRoleHierarchyVoter()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
             'role_hierarchy' => null,
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
                     'http_basic' => null,
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
 
@@ -127,29 +127,29 @@ public function testGuardHandlerIsPassedStatelessFirewalls()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '^/admin',
                     'http_basic' => null,
                     'logout_on_user_change' => true,
-                ),
-                'stateless_firewall' => array(
+                ],
+                'stateless_firewall' => [
                     'pattern' => '/.*',
                     'stateless' => true,
                     'http_basic' => null,
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
         $definition = $container->getDefinition('security.authentication.guard_handler');
-        $this->assertSame(array('stateless_firewall'), $definition->getArgument(2));
+        $this->assertSame(['stateless_firewall'], $definition->getArgument(2));
     }
 
     /**
@@ -160,28 +160,28 @@ public function testConfiguresLogoutOnUserChangeForContextListenersCorrectly()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
-            'firewalls' => array(
-                'some_firewall' => array(
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
                     'http_basic' => null,
                     'logout_on_user_change' => false,
-                ),
-                'some_other_firewall' => array(
+                ],
+                'some_other_firewall' => [
                     'pattern' => '/.*',
                     'http_basic' => null,
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
 
-        $this->assertEquals(array(array('setLogoutOnUserChange', array(false))), $container->getDefinition('security.context_listener.0')->getMethodCalls());
-        $this->assertEquals(array(array('setLogoutOnUserChange', array(true))), $container->getDefinition('security.context_listener.1')->getMethodCalls());
+        $this->assertEquals([['setLogoutOnUserChange', [false]]], $container->getDefinition('security.context_listener.0')->getMethodCalls());
+        $this->assertEquals([['setLogoutOnUserChange', [true]]], $container->getDefinition('security.context_listener.1')->getMethodCalls());
     }
 
     /**
@@ -193,25 +193,25 @@ public function testThrowsIfLogoutOnUserChangeDifferentForSharedContext()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
-            'firewalls' => array(
-                'some_firewall' => array(
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
                     'http_basic' => null,
                     'context' => 'my_context',
                     'logout_on_user_change' => false,
-                ),
-                'some_other_firewall' => array(
+                ],
+                'some_other_firewall' => [
                     'pattern' => '/.*',
                     'http_basic' => null,
                     'context' => 'my_context',
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -224,20 +224,20 @@ public function testSwitchUserNotStatelessOnStatelessFirewall()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'stateless' => true,
                     'http_basic' => null,
-                    'switch_user' => array('stateless' => false),
+                    'switch_user' => ['stateless' => false],
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -250,19 +250,19 @@ public function testDeprecationForAmbiguousProvider()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'first' => array('id' => 'foo'),
-                'second' => array('id' => 'bar'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'first' => ['id' => 'foo'],
+                'second' => ['id' => 'bar'],
+            ],
 
-            'firewalls' => array(
-                'default' => array(
+            'firewalls' => [
+                'default' => [
                     'http_basic' => null,
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -270,19 +270,19 @@ public function testDeprecationForAmbiguousProvider()
     public function testPerListenerProvider()
     {
         $container = $this->getRawContainer();
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'first' => array('id' => 'foo'),
-                'second' => array('id' => 'bar'),
-            ),
-
-            'firewalls' => array(
-                'default' => array(
-                    'http_basic' => array('provider' => 'second'),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'first' => ['id' => 'foo'],
+                'second' => ['id' => 'bar'],
+            ],
+
+            'firewalls' => [
+                'default' => [
+                    'http_basic' => ['provider' => 'second'],
                     'logout_on_user_change' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
         $this->addToAssertionCount(1);
@@ -291,20 +291,20 @@ public function testPerListenerProvider()
     public function testPerListenerProviderWithRememberMe()
     {
         $container = $this->getRawContainer();
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'first' => array('id' => 'foo'),
-                'second' => array('id' => 'bar'),
-            ),
-
-            'firewalls' => array(
-                'default' => array(
-                    'form_login' => array('provider' => 'second'),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'first' => ['id' => 'foo'],
+                'second' => ['id' => 'bar'],
+            ],
+
+            'firewalls' => [
+                'default' => [
+                    'form_login' => ['provider' => 'second'],
                     'logout_on_user_change' => true,
-                    'remember_me' => array('secret' => 'baz'),
-                ),
-            ),
-        ));
+                    'remember_me' => ['secret' => 'baz'],
+                ],
+            ],
+        ]);
 
         $container->compile();
         $this->addToAssertionCount(1);
@@ -319,8 +319,8 @@ protected function getRawContainer()
         $bundle = new SecurityBundle();
         $bundle->build($container);
 
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
 
         return $container;
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AuthenticationCommencingTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AuthenticationCommencingTest.php
index 6ac0e6a3af77..2a31f2a27a5f 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AuthenticationCommencingTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AuthenticationCommencingTest.php
@@ -15,7 +15,7 @@ class AuthenticationCommencingTest extends WebTestCase
 {
     public function testAuthenticationIsCommencingIfAccessDeniedExceptionIsWrapped()
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => 'config.yml']);
 
         $client->request('GET', '/secure-but-not-covered-by-access-control');
         $this->assertRedirect($client->getResponse(), '/login');
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AutowiringTypesTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AutowiringTypesTest.php
index a0bee3c01c1c..95b86985cb6e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AutowiringTypesTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AutowiringTypesTest.php
@@ -18,21 +18,21 @@ class AutowiringTypesTest extends WebTestCase
 {
     public function testAccessDecisionManagerAutowiring()
     {
-        static::bootKernel(array('debug' => false));
+        static::bootKernel(['debug' => false]);
         $container = static::$kernel->getContainer();
 
         $autowiredServices = $container->get('test.autowiring_types.autowired_services');
         $this->assertInstanceOf(AccessDecisionManager::class, $autowiredServices->getAccessDecisionManager(), 'The security.access.decision_manager service should be injected in debug mode');
 
-        static::bootKernel(array('debug' => true));
+        static::bootKernel(['debug' => true]);
         $container = static::$kernel->getContainer();
 
         $autowiredServices = $container->get('test.autowiring_types.autowired_services');
         $this->assertInstanceOf(TraceableAccessDecisionManager::class, $autowiredServices->getAccessDecisionManager(), 'The debug.security.access.decision_manager service should be injected in non-debug mode');
     }
 
-    protected static function createKernel(array $options = array())
+    protected static function createKernel(array $options = [])
     {
-        return parent::createKernel(array('test_case' => 'AutowiringTypes') + $options);
+        return parent::createKernel(['test_case' => 'AutowiringTypes'] + $options);
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/CsrfFormLoginBundle/Controller/LoginController.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/CsrfFormLoginBundle/Controller/LoginController.php
index 90f4d355a487..bafa0f68ce33 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/CsrfFormLoginBundle/Controller/LoginController.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/CsrfFormLoginBundle/Controller/LoginController.php
@@ -24,9 +24,9 @@ public function loginAction()
     {
         $form = $this->container->get('form.factory')->create('Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\CsrfFormLoginBundle\Form\UserLoginType');
 
-        return new Response($this->container->get('twig')->render('@CsrfFormLogin/Login/login.html.twig', array(
+        return new Response($this->container->get('twig')->render('@CsrfFormLogin/Login/login.html.twig', [
             'form' => $form->createView(),
-        )));
+        ]));
     }
 
     public function afterLoginAction()
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/CsrfFormLoginBundle/Form/UserLoginType.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/CsrfFormLoginBundle/Form/UserLoginType.php
index 2f4f20df3a65..63b27512d5d2 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/CsrfFormLoginBundle/Form/UserLoginType.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/CsrfFormLoginBundle/Form/UserLoginType.php
@@ -65,9 +65,9 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 $event->getForm()->addError(new FormError($error->getMessage()));
             }
 
-            $event->setData(array_replace((array) $event->getData(), array(
+            $event->setData(array_replace((array) $event->getData(), [
                 'username' => $request->getSession()->get(Security::LAST_USERNAME),
-            )));
+            ]));
         });
     }
 
@@ -80,8 +80,8 @@ public function configureOptions(OptionsResolver $resolver)
          * listener in order for the CSRF token to validate successfully.
          */
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'csrf_token_id' => 'authenticate',
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LocalizedController.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LocalizedController.php
index 33d70ef7df06..3bf2a7767c83 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LocalizedController.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LocalizedController.php
@@ -30,11 +30,11 @@ public function loginAction(Request $request)
             $error = $request->getSession()->get(Security::AUTHENTICATION_ERROR);
         }
 
-        return new Response($this->container->get('twig')->render('@FormLogin/Localized/login.html.twig', array(
+        return new Response($this->container->get('twig')->render('@FormLogin/Localized/login.html.twig', [
             // last username entered by the user
             'last_username' => $request->getSession()->get(Security::LAST_USERNAME),
             'error' => $error,
-        )));
+        ]));
     }
 
     public function loginCheckAction()
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LoginController.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LoginController.php
index 04fe49055bef..60eef8671877 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LoginController.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LoginController.php
@@ -32,16 +32,16 @@ public function loginAction(Request $request, UserInterface $user = null)
             $error = $request->getSession()->get(Security::AUTHENTICATION_ERROR);
         }
 
-        return new Response($this->container->get('twig')->render('@FormLogin/Login/login.html.twig', array(
+        return new Response($this->container->get('twig')->render('@FormLogin/Login/login.html.twig', [
             // last username entered by the user
             'last_username' => $request->getSession()->get(Security::LAST_USERNAME),
             'error' => $error,
-        )));
+        ]));
     }
 
     public function afterLoginAction(UserInterface $user)
     {
-        return new Response($this->container->get('twig')->render('@FormLogin/Login/after_login.html.twig', array('user' => $user)));
+        return new Response($this->container->get('twig')->render('@FormLogin/Login/after_login.html.twig', ['user' => $user]));
     }
 
     public function loginCheckAction()
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Security/LocalizedFormFailureHandler.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Security/LocalizedFormFailureHandler.php
index 7b971990657e..f8f1c450d396 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Security/LocalizedFormFailureHandler.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Security/LocalizedFormFailureHandler.php
@@ -29,6 +29,6 @@ public function __construct(RouterInterface $router)
 
     public function onAuthenticationFailure(Request $request, AuthenticationException $exception)
     {
-        return new RedirectResponse($this->router->generate('localized_login_path', array(), UrlGeneratorInterface::ABSOLUTE_URL));
+        return new RedirectResponse($this->router->generate('localized_login_path', [], UrlGeneratorInterface::ABSOLUTE_URL));
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Controller/TestController.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Controller/TestController.php
index 3effab9b5991..cba75a1526ac 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Controller/TestController.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Controller/TestController.php
@@ -21,6 +21,6 @@ class TestController
 {
     public function loginCheckAction(UserInterface $user)
     {
-        return new JsonResponse(array('message' => sprintf('Welcome @%s!', $user->getUsername())));
+        return new JsonResponse(['message' => sprintf('Welcome @%s!', $user->getUsername())]);
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Security/Http/JsonAuthenticationFailureHandler.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Security/Http/JsonAuthenticationFailureHandler.php
index fbd482ddffeb..737c5a5abec0 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Security/Http/JsonAuthenticationFailureHandler.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Security/Http/JsonAuthenticationFailureHandler.php
@@ -20,6 +20,6 @@ class JsonAuthenticationFailureHandler implements AuthenticationFailureHandlerIn
 {
     public function onAuthenticationFailure(Request $request, AuthenticationException $exception)
     {
-        return new JsonResponse(array('message' => 'Something went wrong'), 500);
+        return new JsonResponse(['message' => 'Something went wrong'], 500);
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Security/Http/JsonAuthenticationSuccessHandler.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Security/Http/JsonAuthenticationSuccessHandler.php
index 0e65bbb56b98..0390eb8e35eb 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Security/Http/JsonAuthenticationSuccessHandler.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/JsonLoginBundle/Security/Http/JsonAuthenticationSuccessHandler.php
@@ -20,6 +20,6 @@ class JsonAuthenticationSuccessHandler implements AuthenticationSuccessHandlerIn
 {
     public function onAuthenticationSuccess(Request $request, TokenInterface $token)
     {
-        return new JsonResponse(array('message' => sprintf('Good game @%s!', $token->getUsername())));
+        return new JsonResponse(['message' => sprintf('Good game @%s!', $token->getUsername())]);
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/CsrfFormLoginTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/CsrfFormLoginTest.php
index 2d95d3506513..98b52a5f0505 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/CsrfFormLoginTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/CsrfFormLoginTest.php
@@ -18,7 +18,7 @@ class CsrfFormLoginTest extends WebTestCase
      */
     public function testFormLoginAndLogoutWithCsrfTokens($config)
     {
-        $client = $this->createClient(array('test_case' => 'CsrfFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'CsrfFormLogin', 'root_config' => $config]);
 
         $form = $client->request('GET', '/login')->selectButton('login')->form();
         $form['user_login[username]'] = 'johannes';
@@ -48,7 +48,7 @@ public function testFormLoginAndLogoutWithCsrfTokens($config)
      */
     public function testFormLoginWithInvalidCsrfToken($config)
     {
-        $client = $this->createClient(array('test_case' => 'CsrfFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'CsrfFormLogin', 'root_config' => $config]);
 
         $form = $client->request('GET', '/login')->selectButton('login')->form();
         $form['user_login[_token]'] = '';
@@ -65,7 +65,7 @@ public function testFormLoginWithInvalidCsrfToken($config)
      */
     public function testFormLoginWithCustomTargetPath($config)
     {
-        $client = $this->createClient(array('test_case' => 'CsrfFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'CsrfFormLogin', 'root_config' => $config]);
 
         $form = $client->request('GET', '/login')->selectButton('login')->form();
         $form['user_login[username]'] = 'johannes';
@@ -85,7 +85,7 @@ public function testFormLoginWithCustomTargetPath($config)
      */
     public function testFormLoginRedirectsToProtectedResourceAfterLogin($config)
     {
-        $client = $this->createClient(array('test_case' => 'CsrfFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'CsrfFormLogin', 'root_config' => $config]);
 
         $client->request('GET', '/protected-resource');
         $this->assertRedirect($client->getResponse(), '/login');
@@ -103,9 +103,9 @@ public function testFormLoginRedirectsToProtectedResourceAfterLogin($config)
 
     public function getConfigs()
     {
-        return array(
-            array('config.yml'),
-            array('routes_as_path.yml'),
-        );
+        return [
+            ['config.yml'],
+            ['routes_as_path.yml'],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/FirewallEntryPointTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/FirewallEntryPointTest.php
index 8179c2e942a6..8afedc42e44d 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/FirewallEntryPointTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/FirewallEntryPointTest.php
@@ -17,12 +17,12 @@ class FirewallEntryPointTest extends WebTestCase
 {
     public function testItUsesTheConfiguredEntryPointWhenUsingUnknownCredentials()
     {
-        $client = $this->createClient(array('test_case' => 'FirewallEntryPoint'));
+        $client = $this->createClient(['test_case' => 'FirewallEntryPoint']);
 
-        $client->request('GET', '/secure/resource', array(), array(), array(
+        $client->request('GET', '/secure/resource', [], [], [
             'PHP_AUTH_USER' => 'unknown',
             'PHP_AUTH_PW' => 'credentials',
-        ));
+        ]);
 
         $this->assertEquals(
             EntryPointStub::RESPONSE_TEXT,
@@ -33,7 +33,7 @@ public function testItUsesTheConfiguredEntryPointWhenUsingUnknownCredentials()
 
     public function testItUsesTheConfiguredEntryPointFromTheExceptionListenerWithFormLoginAndNoCredentials()
     {
-        $client = $this->createClient(array('test_case' => 'FirewallEntryPoint', 'root_config' => 'config_form_login.yml'));
+        $client = $this->createClient(['test_case' => 'FirewallEntryPoint', 'root_config' => 'config_form_login.yml']);
 
         $client->request('GET', '/secure/resource');
 
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/FormLoginTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/FormLoginTest.php
index c2e766e9acca..ec1722188af2 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/FormLoginTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/FormLoginTest.php
@@ -18,7 +18,7 @@ class FormLoginTest extends WebTestCase
      */
     public function testFormLogin($config)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config]);
 
         $form = $client->request('GET', '/login')->selectButton('login')->form();
         $form['_username'] = 'johannes';
@@ -37,7 +37,7 @@ public function testFormLogin($config)
      */
     public function testFormLogout($config)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config]);
 
         $form = $client->request('GET', '/login')->selectButton('login')->form();
         $form['_username'] = 'johannes';
@@ -70,7 +70,7 @@ public function testFormLogout($config)
      */
     public function testFormLoginWithCustomTargetPath($config)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config]);
 
         $form = $client->request('GET', '/login')->selectButton('login')->form();
         $form['_username'] = 'johannes';
@@ -90,7 +90,7 @@ public function testFormLoginWithCustomTargetPath($config)
      */
     public function testFormLoginRedirectsToProtectedResourceAfterLogin($config)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config]);
 
         $client->request('GET', '/protected_resource');
         $this->assertRedirect($client->getResponse(), '/login');
@@ -108,9 +108,9 @@ public function testFormLoginRedirectsToProtectedResourceAfterLogin($config)
 
     public function getConfigs()
     {
-        return array(
-            array('config.yml'),
-            array('routes_as_path.yml'),
-        );
+        return [
+            ['config.yml'],
+            ['routes_as_path.yml'],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/JsonLoginTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/JsonLoginTest.php
index 7ee4c9b25dd4..c7e9e2aab71b 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/JsonLoginTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/JsonLoginTest.php
@@ -20,56 +20,56 @@ class JsonLoginTest extends WebTestCase
 {
     public function testDefaultJsonLoginSuccess()
     {
-        $client = $this->createClient(array('test_case' => 'JsonLogin', 'root_config' => 'config.yml'));
-        $client->request('POST', '/chk', array(), array(), array('CONTENT_TYPE' => 'application/json'), '{"user": {"login": "dunglas", "password": "foo"}}');
+        $client = $this->createClient(['test_case' => 'JsonLogin', 'root_config' => 'config.yml']);
+        $client->request('POST', '/chk', [], [], ['CONTENT_TYPE' => 'application/json'], '{"user": {"login": "dunglas", "password": "foo"}}');
         $response = $client->getResponse();
 
         $this->assertInstanceOf(JsonResponse::class, $response);
         $this->assertSame(200, $response->getStatusCode());
-        $this->assertSame(array('message' => 'Welcome @dunglas!'), json_decode($response->getContent(), true));
+        $this->assertSame(['message' => 'Welcome @dunglas!'], json_decode($response->getContent(), true));
     }
 
     public function testDefaultJsonLoginFailure()
     {
-        $client = $this->createClient(array('test_case' => 'JsonLogin', 'root_config' => 'config.yml'));
-        $client->request('POST', '/chk', array(), array(), array('CONTENT_TYPE' => 'application/json'), '{"user": {"login": "dunglas", "password": "bad"}}');
+        $client = $this->createClient(['test_case' => 'JsonLogin', 'root_config' => 'config.yml']);
+        $client->request('POST', '/chk', [], [], ['CONTENT_TYPE' => 'application/json'], '{"user": {"login": "dunglas", "password": "bad"}}');
         $response = $client->getResponse();
 
         $this->assertInstanceOf(JsonResponse::class, $response);
         $this->assertSame(401, $response->getStatusCode());
-        $this->assertSame(array('error' => 'Invalid credentials.'), json_decode($response->getContent(), true));
+        $this->assertSame(['error' => 'Invalid credentials.'], json_decode($response->getContent(), true));
     }
 
     public function testCustomJsonLoginSuccess()
     {
-        $client = $this->createClient(array('test_case' => 'JsonLogin', 'root_config' => 'custom_handlers.yml'));
-        $client->request('POST', '/chk', array(), array(), array('CONTENT_TYPE' => 'application/json'), '{"user": {"login": "dunglas", "password": "foo"}}');
+        $client = $this->createClient(['test_case' => 'JsonLogin', 'root_config' => 'custom_handlers.yml']);
+        $client->request('POST', '/chk', [], [], ['CONTENT_TYPE' => 'application/json'], '{"user": {"login": "dunglas", "password": "foo"}}');
         $response = $client->getResponse();
 
         $this->assertInstanceOf(JsonResponse::class, $response);
         $this->assertSame(200, $response->getStatusCode());
-        $this->assertSame(array('message' => 'Good game @dunglas!'), json_decode($response->getContent(), true));
+        $this->assertSame(['message' => 'Good game @dunglas!'], json_decode($response->getContent(), true));
     }
 
     public function testCustomJsonLoginFailure()
     {
-        $client = $this->createClient(array('test_case' => 'JsonLogin', 'root_config' => 'custom_handlers.yml'));
-        $client->request('POST', '/chk', array(), array(), array('CONTENT_TYPE' => 'application/json'), '{"user": {"login": "dunglas", "password": "bad"}}');
+        $client = $this->createClient(['test_case' => 'JsonLogin', 'root_config' => 'custom_handlers.yml']);
+        $client->request('POST', '/chk', [], [], ['CONTENT_TYPE' => 'application/json'], '{"user": {"login": "dunglas", "password": "bad"}}');
         $response = $client->getResponse();
 
         $this->assertInstanceOf(JsonResponse::class, $response);
         $this->assertSame(500, $response->getStatusCode());
-        $this->assertSame(array('message' => 'Something went wrong'), json_decode($response->getContent(), true));
+        $this->assertSame(['message' => 'Something went wrong'], json_decode($response->getContent(), true));
     }
 
     public function testDefaultJsonLoginBadRequest()
     {
-        $client = $this->createClient(array('test_case' => 'JsonLogin', 'root_config' => 'config.yml'));
-        $client->request('POST', '/chk', array(), array(), array('CONTENT_TYPE' => 'application/json'), 'Not a json content');
+        $client = $this->createClient(['test_case' => 'JsonLogin', 'root_config' => 'config.yml']);
+        $client->request('POST', '/chk', [], [], ['CONTENT_TYPE' => 'application/json'], 'Not a json content');
         $response = $client->getResponse();
 
         $this->assertSame(400, $response->getStatusCode());
         $this->assertSame('application/json', $response->headers->get('Content-Type'));
-        $this->assertArraySubset(array('error' => array('code' => 400, 'message' => 'Bad Request')), json_decode($response->getContent(), true));
+        $this->assertArraySubset(['error' => ['code' => 400, 'message' => 'Bad Request']], json_decode($response->getContent(), true));
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LocalizedRoutesAsPathTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LocalizedRoutesAsPathTest.php
index cb600764eaf4..c874ada34a4e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LocalizedRoutesAsPathTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LocalizedRoutesAsPathTest.php
@@ -18,7 +18,7 @@ class LocalizedRoutesAsPathTest extends WebTestCase
      */
     public function testLoginLogoutProcedure($locale)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => 'localized_routes.yml'));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => 'localized_routes.yml']);
 
         $crawler = $client->request('GET', '/'.$locale.'/login');
         $form = $crawler->selectButton('login')->form();
@@ -39,7 +39,7 @@ public function testLoginLogoutProcedure($locale)
      */
     public function testLoginFailureWithLocalizedFailurePath($locale)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => 'localized_form_failure_handler.yml'));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => 'localized_form_failure_handler.yml']);
 
         $crawler = $client->request('GET', '/'.$locale.'/login');
         $form = $crawler->selectButton('login')->form();
@@ -55,7 +55,7 @@ public function testLoginFailureWithLocalizedFailurePath($locale)
      */
     public function testAccessRestrictedResource($locale)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => 'localized_routes.yml'));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => 'localized_routes.yml']);
 
         $client->request('GET', '/'.$locale.'/secure/');
         $this->assertRedirect($client->getResponse(), '/'.$locale.'/login');
@@ -66,7 +66,7 @@ public function testAccessRestrictedResource($locale)
      */
     public function testAccessRestrictedResourceWithForward($locale)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => 'localized_routes_with_forward.yml'));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => 'localized_routes_with_forward.yml']);
 
         $crawler = $client->request('GET', '/'.$locale.'/secure/');
         $this->assertCount(1, $crawler->selectButton('login'), (string) $client->getResponse());
@@ -74,6 +74,6 @@ public function testAccessRestrictedResourceWithForward($locale)
 
     public function getLocales()
     {
-        return array(array('en'), array('de'));
+        return [['en'], ['de']];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LogoutTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LogoutTest.php
index a3f73cfc35fa..31ff6d1bbc7d 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LogoutTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LogoutTest.php
@@ -15,12 +15,12 @@ class LogoutTest extends WebTestCase
 {
     public function testSessionLessRememberMeLogout()
     {
-        $client = $this->createClient(array('test_case' => 'RememberMeLogout', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'RememberMeLogout', 'root_config' => 'config.yml']);
 
-        $client->request('POST', '/login', array(
+        $client->request('POST', '/login', [
             '_username' => 'johannes',
             '_password' => 'test',
-        ));
+        ]);
 
         $cookieJar = $client->getCookieJar();
         $cookieJar->expire(session_name());
@@ -34,13 +34,13 @@ public function testSessionLessRememberMeLogout()
 
     public function testCsrfTokensAreClearedOnLogout()
     {
-        $client = $this->createClient(array('test_case' => 'LogoutWithoutSessionInvalidation', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'LogoutWithoutSessionInvalidation', 'root_config' => 'config.yml']);
         static::$kernel->getContainer()->get('test.security.csrf.token_storage')->setToken('foo', 'bar');
 
-        $client->request('POST', '/login', array(
+        $client->request('POST', '/login', [
             '_username' => 'johannes',
             '_password' => 'test',
-        ));
+        ]);
 
         $this->assertTrue(static::$kernel->getContainer()->get('test.security.csrf.token_storage')->hasToken('foo'));
         $this->assertSame('bar', static::$kernel->getContainer()->get('test.security.csrf.token_storage')->getToken('foo'));
@@ -52,9 +52,9 @@ public function testCsrfTokensAreClearedOnLogout()
 
     public function testAccessControlDoesNotApplyOnLogout()
     {
-        $client = $this->createClient(array('test_case' => 'LogoutAccess', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'LogoutAccess', 'root_config' => 'config.yml']);
 
-        $client->request('POST', '/login', array('_username' => 'johannes', '_password' => 'test'));
+        $client->request('POST', '/login', ['_username' => 'johannes', '_password' => 'test']);
         $client->request('GET', '/logout');
 
         $this->assertRedirect($client->getResponse(), '/');
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SecurityRoutingIntegrationTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SecurityRoutingIntegrationTest.php
index 5996415e10a6..0d2d6da0cfc5 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SecurityRoutingIntegrationTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SecurityRoutingIntegrationTest.php
@@ -18,7 +18,7 @@ class SecurityRoutingIntegrationTest extends WebTestCase
      */
     public function testRoutingErrorIsNotExposedForProtectedResourceWhenAnonymous($config)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config]);
         $client->request('GET', '/protected_resource');
 
         $this->assertRedirect($client->getResponse(), '/login');
@@ -29,7 +29,7 @@ public function testRoutingErrorIsNotExposedForProtectedResourceWhenAnonymous($c
      */
     public function testRoutingErrorIsExposedWhenNotProtected($config)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config]);
         $client->request('GET', '/unprotected_resource');
 
         $this->assertEquals(404, $client->getResponse()->getStatusCode(), (string) $client->getResponse());
@@ -40,7 +40,7 @@ public function testRoutingErrorIsExposedWhenNotProtected($config)
      */
     public function testRoutingErrorIsNotExposedForProtectedResourceWhenLoggedInWithInsufficientRights($config)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config]);
 
         $form = $client->request('GET', '/login')->selectButton('login')->form();
         $form['_username'] = 'johannes';
@@ -57,8 +57,8 @@ public function testRoutingErrorIsNotExposedForProtectedResourceWhenLoggedInWith
      */
     public function testSecurityConfigurationForSingleIPAddress($config)
     {
-        $allowedClient = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config), array('REMOTE_ADDR' => '10.10.10.10'));
-        $barredClient = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config), array('REMOTE_ADDR' => '10.10.20.10'));
+        $allowedClient = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config], ['REMOTE_ADDR' => '10.10.10.10']);
+        $barredClient = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config], ['REMOTE_ADDR' => '10.10.20.10']);
 
         $this->assertAllowed($allowedClient, '/secured-by-one-ip');
         $this->assertRestricted($barredClient, '/secured-by-one-ip');
@@ -69,9 +69,9 @@ public function testSecurityConfigurationForSingleIPAddress($config)
      */
     public function testSecurityConfigurationForMultipleIPAddresses($config)
     {
-        $allowedClientA = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config), array('REMOTE_ADDR' => '1.1.1.1'));
-        $allowedClientB = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config), array('REMOTE_ADDR' => '2.2.2.2'));
-        $barredClient = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config), array('REMOTE_ADDR' => '192.168.1.1'));
+        $allowedClientA = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config], ['REMOTE_ADDR' => '1.1.1.1']);
+        $allowedClientB = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config], ['REMOTE_ADDR' => '2.2.2.2']);
+        $barredClient = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config], ['REMOTE_ADDR' => '192.168.1.1']);
 
         $this->assertAllowed($allowedClientA, '/secured-by-two-ips');
         $this->assertAllowed($allowedClientB, '/secured-by-two-ips');
@@ -83,13 +83,13 @@ public function testSecurityConfigurationForMultipleIPAddresses($config)
      */
     public function testSecurityConfigurationForExpression($config)
     {
-        $allowedClient = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config), array('HTTP_USER_AGENT' => 'Firefox 1.0'));
+        $allowedClient = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config], ['HTTP_USER_AGENT' => 'Firefox 1.0']);
         $this->assertAllowed($allowedClient, '/protected-via-expression');
 
-        $barredClient = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config), array());
+        $barredClient = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config], []);
         $this->assertRestricted($barredClient, '/protected-via-expression');
 
-        $allowedClient = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => $config), array());
+        $allowedClient = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => $config], []);
 
         $allowedClient->request('GET', '/protected-via-expression');
         $form = $allowedClient->followRedirect()->selectButton('login')->form();
@@ -114,6 +114,6 @@ private function assertRestricted($client, $path)
 
     public function getConfigs()
     {
-        return array(array('config.yml'), array('routes_as_path.yml'));
+        return [['config.yml'], ['routes_as_path.yml']];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SecurityTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SecurityTest.php
index bcf8a0d620c9..ff687d079271 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SecurityTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SecurityTest.php
@@ -18,13 +18,13 @@ class SecurityTest extends WebTestCase
 {
     public function testServiceIsFunctional()
     {
-        $kernel = self::createKernel(array('test_case' => 'SecurityHelper', 'root_config' => 'config.yml'));
+        $kernel = self::createKernel(['test_case' => 'SecurityHelper', 'root_config' => 'config.yml']);
         $kernel->boot();
         $container = $kernel->getContainer();
 
         // put a token into the storage so the final calls can function
         $user = new User('foo', 'pass');
-        $token = new UsernamePasswordToken($user, '', 'provider', array('ROLE_USER'));
+        $token = new UsernamePasswordToken($user, '', 'provider', ['ROLE_USER']);
         $container->get('security.token_storage')->setToken($token);
 
         $security = $container->get('functional_test.security.helper');
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SetAclCommandTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SetAclCommandTest.php
index 85f6cf86a403..2035868e16ca 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SetAclCommandTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SetAclCommandTest.php
@@ -53,11 +53,11 @@ public function testSetAclUser()
 
         $setAclCommand = $application->find('acl:set');
         $setAclCommandTester = new CommandTester($setAclCommand);
-        $setAclCommandTester->execute(array(
+        $setAclCommandTester->execute([
             'command' => 'acl:set',
-            'arguments' => array($grantedPermission1, $grantedPermission2, sprintf('%s:%s', self::OBJECT_CLASS, $objectId)),
-            '--user' => array(sprintf('%s:%s', self::SECURITY_CLASS, $securityUsername1), sprintf('%s:%s', self::SECURITY_CLASS, $securityUsername2)),
-        ));
+            'arguments' => [$grantedPermission1, $grantedPermission2, sprintf('%s:%s', self::OBJECT_CLASS, $objectId)],
+            '--user' => [sprintf('%s:%s', self::SECURITY_CLASS, $securityUsername1), sprintf('%s:%s', self::SECURITY_CLASS, $securityUsername2)],
+        ]);
 
         $objectIdentity = new ObjectIdentity($objectId, self::OBJECT_CLASS);
         $securityIdentity1 = new UserSecurityIdentity($securityUsername1, self::SECURITY_CLASS);
@@ -66,20 +66,20 @@ public function testSetAclUser()
 
         /** @var \Symfony\Component\Security\Acl\Model\AclProviderInterface $aclProvider */
         $aclProvider = $application->getKernel()->getContainer()->get('test.security.acl.provider');
-        $acl = $aclProvider->findAcl($objectIdentity, array($securityIdentity1));
+        $acl = $aclProvider->findAcl($objectIdentity, [$securityIdentity1]);
 
-        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission1, null), array($securityIdentity1)));
-        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission1, null), array($securityIdentity2)));
-        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission2, null), array($securityIdentity2)));
+        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission1, null), [$securityIdentity1]));
+        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission1, null), [$securityIdentity2]));
+        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission2, null), [$securityIdentity2]));
 
         try {
-            $acl->isGranted($permissionMap->getMasks('OWNER', null), array($securityIdentity1));
+            $acl->isGranted($permissionMap->getMasks('OWNER', null), [$securityIdentity1]);
             $this->fail('NoAceFoundException not throwed');
         } catch (NoAceFoundException $e) {
         }
 
         try {
-            $acl->isGranted($permissionMap->getMasks('OPERATOR', null), array($securityIdentity2));
+            $acl->isGranted($permissionMap->getMasks('OPERATOR', null), [$securityIdentity2]);
             $this->fail('NoAceFoundException not throwed');
         } catch (NoAceFoundException $e) {
         }
@@ -97,11 +97,11 @@ public function testSetAclRole()
 
         $setAclCommand = $application->find('acl:set');
         $setAclCommandTester = new CommandTester($setAclCommand);
-        $setAclCommandTester->execute(array(
+        $setAclCommandTester->execute([
             'command' => 'acl:set',
-            'arguments' => array($grantedPermission, sprintf('%s:%s', str_replace('\\', '/', self::OBJECT_CLASS), $objectId)),
-            '--role' => array($role),
-        ));
+            'arguments' => [$grantedPermission, sprintf('%s:%s', str_replace('\\', '/', self::OBJECT_CLASS), $objectId)],
+            '--role' => [$role],
+        ]);
 
         $objectIdentity = new ObjectIdentity($objectId, self::OBJECT_CLASS);
         $userSecurityIdentity = new UserSecurityIdentity($securityUsername, self::SECURITY_CLASS);
@@ -110,19 +110,19 @@ public function testSetAclRole()
 
         /** @var \Symfony\Component\Security\Acl\Model\AclProviderInterface $aclProvider */
         $aclProvider = $application->getKernel()->getContainer()->get('test.security.acl.provider');
-        $acl = $aclProvider->findAcl($objectIdentity, array($roleSecurityIdentity, $userSecurityIdentity));
+        $acl = $aclProvider->findAcl($objectIdentity, [$roleSecurityIdentity, $userSecurityIdentity]);
 
-        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission, null), array($roleSecurityIdentity)));
-        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission, null), array($roleSecurityIdentity)));
+        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission, null), [$roleSecurityIdentity]));
+        $this->assertTrue($acl->isGranted($permissionMap->getMasks($grantedPermission, null), [$roleSecurityIdentity]));
 
         try {
-            $acl->isGranted($permissionMap->getMasks('VIEW', null), array($userSecurityIdentity));
+            $acl->isGranted($permissionMap->getMasks('VIEW', null), [$userSecurityIdentity]);
             $this->fail('NoAceFoundException not throwed');
         } catch (NoAceFoundException $e) {
         }
 
         try {
-            $acl->isGranted($permissionMap->getMasks('OPERATOR', null), array($userSecurityIdentity));
+            $acl->isGranted($permissionMap->getMasks('OPERATOR', null), [$userSecurityIdentity]);
             $this->fail('NoAceFoundException not throwed');
         } catch (NoAceFoundException $e) {
         }
@@ -139,12 +139,12 @@ public function testSetAclClassScope()
 
         $setAclCommand = $application->find('acl:set');
         $setAclCommandTester = new CommandTester($setAclCommand);
-        $setAclCommandTester->execute(array(
+        $setAclCommandTester->execute([
             'command' => 'acl:set',
-            'arguments' => array($grantedPermission, sprintf('%s:%s', self::OBJECT_CLASS, $objectId)),
+            'arguments' => [$grantedPermission, sprintf('%s:%s', self::OBJECT_CLASS, $objectId)],
             '--class-
10000
scope' => true,
-            '--role' => array($role),
-        ));
+            '--role' => [$role],
+        ]);
 
         $objectIdentity1 = new ObjectIdentity($objectId, self::OBJECT_CLASS);
         $objectIdentity2 = new ObjectIdentity(2, self::OBJECT_CLASS);
@@ -154,23 +154,23 @@ public function testSetAclClassScope()
         /** @var \Symfony\Component\Security\Acl\Model\AclProviderInterface $aclProvider */
         $aclProvider = $application->getKernel()->getContainer()->get('test.security.acl.provider');
 
-        $acl1 = $aclProvider->findAcl($objectIdentity1, array($roleSecurityIdentity));
-        $this->assertTrue($acl1->isGranted($permissionMap->getMasks($grantedPermission, null), array($roleSecurityIdentity)));
+        $acl1 = $aclProvider->findAcl($objectIdentity1, [$roleSecurityIdentity]);
+        $this->assertTrue($acl1->isGranted($permissionMap->getMasks($grantedPermission, null), [$roleSecurityIdentity]));
 
         $acl2 = $aclProvider->createAcl($objectIdentity2);
-        $this->assertTrue($acl2->isGranted($permissionMap->getMasks($grantedPermission, null), array($roleSecurityIdentity)));
+        $this->assertTrue($acl2->isGranted($permissionMap->getMasks($grantedPermission, null), [$roleSecurityIdentity]));
     }
 
     private function getApplication()
     {
-        $kernel = $this->createKernel(array('test_case' => 'Acl'));
+        $kernel = $this->createKernel(['test_case' => 'Acl']);
         $kernel->boot();
 
         $application = new Application($kernel);
 
         $initAclCommand = $application->find('init:acl');
         $initAclCommandTester = new CommandTester($initAclCommand);
-        $initAclCommandTester->execute(array('command' => 'init:acl'));
+        $initAclCommandTester->execute(['command' => 'init:acl']);
 
         return $application;
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SwitchUserTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SwitchUserTest.php
index 97b0a559193c..ddbfd629c8fb 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SwitchUserTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/SwitchUserTest.php
@@ -53,29 +53,29 @@ public function testSwitchedUserExit()
 
     public function testSwitchUserStateless()
     {
-        $client = $this->createClient(array('test_case' => 'JsonLogin', 'root_config' => 'switchuser_stateless.yml'));
-        $client->request('POST', '/chk', array(), array(), array('HTTP_X_SWITCH_USER' => 'dunglas', 'CONTENT_TYPE' => 'application/json'), '{"user": {"login": "user_can_switch", "password": "test"}}');
+        $client = $this->createClient(['test_case' => 'JsonLogin', 'root_config' => 'switchuser_stateless.yml']);
+        $client->request('POST', '/chk', [], [], ['HTTP_X_SWITCH_USER' => 'dunglas', 'CONTENT_TYPE' => 'application/json'], '{"user": {"login": "user_can_switch", "password": "test"}}');
         $response = $client->getResponse();
 
         $this->assertInstanceOf(JsonResponse::class, $response);
         $this->assertSame(200, $response->getStatusCode());
-        $this->assertSame(array('message' => 'Welcome @dunglas!'), json_decode($response->getContent(), true));
+        $this->assertSame(['message' => 'Welcome @dunglas!'], json_decode($response->getContent(), true));
         $this->assertSame('dunglas', $client->getProfile()->getCollector('security')->getUser());
     }
 
     public function getTestParameters()
     {
-        return array(
-            'unauthorized_user_cannot_switch' => array('user_cannot_switch_1', 'user_cannot_switch_1', 'user_cannot_switch_1', 403),
-            'authorized_user_can_switch' => array('user_can_switch', 'user_cannot_switch_1', 'user_cannot_switch_1', 200),
-            'authorized_user_cannot_switch_to_non_existent' => array('user_can_switch', 'user_does_not_exist', 'user_can_switch', 500),
-            'authorized_user_can_switch_to_himself' => array('user_can_switch', 'user_can_switch', 'user_can_switch', 200),
-        );
+        return [
+            'unauthorized_user_cannot_switch' => ['user_cannot_switch_1', 'user_cannot_switch_1', 'user_cannot_switch_1', 403],
+            'authorized_user_can_switch' => ['user_can_switch', 'user_cannot_switch_1', 'user_cannot_switch_1', 200],
+            'authorized_user_cannot_switch_to_non_existent' => ['user_can_switch', 'user_does_not_exist', 'user_can_switch', 500],
+            'authorized_user_can_switch_to_himself' => ['user_can_switch', 'user_can_switch', 'user_can_switch', 200],
+        ];
     }
 
     protected function createAuthenticatedClient($username)
     {
-        $client = $this->createClient(array('test_case' => 'StandardFormLogin', 'root_config' => 'switchuser.yml'));
+        $client = $this->createClient(['test_case' => 'StandardFormLogin', 'root_config' => 'switchuser.yml']);
         $client->followRedirects(true);
 
         $form = $client->request('GET', '/login')->selectButton('login')->form();
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
index 659260ff6bdb..d53bb45461f7 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
@@ -32,12 +32,12 @@ class UserPasswordEncoderCommandTest extends WebTestCase
 
     public function testEncodePasswordEmptySalt()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Symfony\Component\Security\Core\User\User',
             '--empty-salt' => true,
-        ), array('decorated' => false));
+        ], ['decorated' => false]);
         $expected = str_replace("\n", PHP_EOL, file_get_contents(__DIR__.'/app/PasswordEncode/emptysalt.txt'));
 
         $this->assertEquals($expected, $this->passwordEncoderCommandTester->getDisplay());
@@ -45,9 +45,9 @@ public function testEncodePasswordEmptySalt()
 
     public function testEncodeNoPasswordNoInteraction()
     {
-        $statusCode = $this->passwordEncoderCommandTester->execute(array(
+        $statusCode = $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertContains('[ERROR] The password must not be empty.', $this->passwordEncoderCommandTester->getDisplay());
         $this->assertEquals($statusCode, 1);
@@ -55,11 +55,11 @@ public function testEncodeNoPasswordNoInteraction()
 
     public function testEncodePasswordBcrypt()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Custom\Class\Bcrypt\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $output = $this->passwordEncoderCommandTester->getDisplay();
         $this->assertContains('Password encoding succeeded', $output);
@@ -76,11 +76,11 @@ public function testEncodePasswordArgon2i()
             $this->markTestSkipped('Argon2i algorithm not available.');
         }
         $this->setupArgon2i();
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Custom\Class\Argon2i\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $output = $this->passwordEncoderCommandTester->getDisplay();
         $this->assertContains('Password encoding succeeded', $output);
@@ -93,11 +93,11 @@ public function testEncodePasswordArgon2i()
 
     public function testEncodePasswordPbkdf2()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Custom\Class\Pbkdf2\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $output = $this->passwordEncoderCommandTester->getDisplay();
         $this->assertContains('Password encoding succeeded', $output);
@@ -113,10 +113,10 @@ public function testEncodePasswordPbkdf2()
     public function testEncodePasswordOutput()
     {
         $this->passwordEncoderCommandTester->execute(
-            array(
+            [
                 'command' => 'security:encode-password',
                 'password' => 'p@ssw0rd',
-            ), array('interactive' => false)
+            ], ['interactive' => false]
         );
 
         $this->assertContains('Password encoding succeeded', $this->passwordEncoderCommandTester->getDisplay());
@@ -127,12 +127,12 @@ public function testEncodePasswordOutput()
     public function testEncodePasswordEmptySaltOutput()
     {
         $this->passwordEncoderCommandTester->execute(
-            array(
+            [
                 'command' => 'security:encode-password',
                 'password' => 'p@ssw0rd',
                 'user-class' => 'Symfony\Component\Security\Core\User\User',
                 '--empty-salt' => true,
-            )
+            ]
         );
 
         $this->assertContains('Password encoding succeeded', $this->passwordEncoderCommandTester->getDisplay());
@@ -142,11 +142,11 @@ public function testEncodePasswordEmptySaltOutput()
 
     public function testEncodePasswordBcryptOutput()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'p@ssw0rd',
             'user-class' => 'Custom\Class\Bcrypt\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertNotContains(' Generated salt ', $this->passwordEncoderCommandTester->getDisplay());
     }
@@ -158,11 +158,11 @@ public function testEncodePasswordArgon2iOutput()
         }
 
         $this->setupArgon2i();
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'p@ssw0rd',
             'user-class' => 'Custom\Class\Argon2i\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertNotContains(' Generated salt ', $this->passwordEncoderCommandTester->getDisplay());
     }
@@ -176,20 +176,20 @@ public function testEncodePasswordNoConfigForGivenUserClass()
             $this->setExpectedException('\RuntimeException', 'No encoder has been configured for account "Foo\Bar\User".');
         }
 
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Foo\Bar\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
     }
 
     public function testEncodePasswordAsksNonProvidedUserClass()
     {
-        $this->passwordEncoderCommandTester->setInputs(array('Custom\Class\Pbkdf2\User', "\n"));
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->setInputs(['Custom\Class\Pbkdf2\User', "\n"]);
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
-        ), array('decorated' => false));
+        ], ['decorated' => false]);
 
         $this->assertContains(<<<EOTXT
  For which user class would you like to encode a password? [Custom\Class\Bcrypt\User]:
@@ -203,10 +203,10 @@ public function testEncodePasswordAsksNonProvidedUserClass()
 
     public function testNonInteractiveEncodePasswordUsesFirstUserClass()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertContains('Encoder used       Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder', $this->passwordEncoderCommandTester->getDisplay());
     }
@@ -218,15 +218,15 @@ public function testNonInteractiveEncodePasswordUsesFirstUserClass()
     public function testThrowsExceptionOnNoConfiguredEncoders()
     {
         $application = new ConsoleApplication();
-        $application->add(new UserPasswordEncoderCommand($this->getMockBuilder(EncoderFactoryInterface::class)->getMock(), array()));
+        $application->add(new UserPasswordEncoderCommand($this->getMockBuilder(EncoderFactoryInterface::class)->getMock(), []));
 
         $passwordEncoderCommand = $application->find('security:encode-password');
 
         $tester = new CommandTester($passwordEncoderCommand);
-        $tester->execute(array(
+        $tester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
     }
 
     /**
@@ -239,14 +239,14 @@ public function testLegacy()
         $application->add(new UserPasswordEncoderCommand());
 
         $passwordEncoderCommand = $application->find('security:encode-password');
-        self::bootKernel(array('test_case' => 'PasswordEncode'));
+        self::bootKernel(['test_case' => 'PasswordEncode']);
         $passwordEncoderCommand->setContainer(self::$kernel->getContainer());
 
         $tester = new CommandTester($passwordEncoderCommand);
-        $tester->execute(array(
+        $tester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertContains('Encoder used       Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder', $tester->getDisplay());
     }
@@ -254,7 +254,7 @@ public function testLegacy()
     protected function setUp()
     {
         putenv('COLUMNS='.(119 + \strlen(PHP_EOL)));
-        $kernel = $this->createKernel(array('test_case' => 'PasswordEncode'));
+        $kernel = $this->createKernel(['test_case' => 'PasswordEncode']);
         $kernel->boot();
 
         $application = new Application($kernel);
@@ -272,7 +272,7 @@ protected function tearDown()
     private function setupArgon2i()
     {
         putenv('COLUMNS='.(119 + \strlen(PHP_EOL)));
-        $kernel = $this->createKernel(array('test_case' => 'PasswordEncode', 'root_config' => 'argon2i.yml'));
+        $kernel = $this->createKernel(['test_case' => 'PasswordEncode', 'root_config' => 'argon2i.yml']);
         $kernel->boot();
 
         $application = new Application($kernel);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/WebTestCase.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/WebTestCase.php
index 03e2f3c72c22..f1d23b6054ad 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/WebTestCase.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/WebTestCase.php
@@ -49,7 +49,7 @@ protected static function getKernelClass()
         return 'Symfony\Bundle\SecurityBundle\Tests\Functional\app\AppKernel';
     }
 
-    protected static function createKernel(array $options = array())
+    protected static function createKernel(array $options = [])
     {
         $class = self::getKernelClass();
 
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/Acl/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/Acl/bundles.php
index 51337913d537..8185d553c1ab 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/Acl/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/Acl/bundles.php
@@ -9,9 +9,9 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     new Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
     new Symfony\Bundle\SecurityBundle\SecurityBundle(),
     new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
     new Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\AclBundle\AclBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AppKernel.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AppKernel.php
index 82c8ad4aa6c6..a57cf0b2e81e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AppKernel.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AppKernel.php
@@ -92,7 +92,7 @@ public function registerContainerConfiguration(LoaderInterface $loader)
 
     public function serialize()
     {
-        return serialize(array($this->varDir, $this->testCase, $this->rootConfig, $this->getEnvironment(), $this->isDebug()));
+        return serialize([$this->varDir, $this->testCase, $this->rootConfig, $this->getEnvironment(), $this->isDebug()]);
     }
 
     public function unserialize($str)
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AutowiringTypes/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AutowiringTypes/bundles.php
index 68e5afb125f8..535a4bf517b8 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AutowiringTypes/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AutowiringTypes/bundles.php
@@ -9,8 +9,8 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
     new Symfony\Bundle\SecurityBundle\SecurityBundle(),
     new Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\AutowiringBundle\AutowiringBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CsrfFormLogin/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CsrfFormLogin/bundles.php
index c16ab12f6585..65a38200e759 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CsrfFormLogin/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CsrfFormLogin/bundles.php
@@ -9,9 +9,9 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
     new Symfony\Bundle\SecurityBundle\SecurityBundle(),
     new Symfony\Bundle\TwigBundle\TwigBundle(),
     new Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\CsrfFormLoginBundle\CsrfFormLoginBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/FirewallEntryPoint/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/FirewallEntryPoint/bundles.php
index 412e1c5d09e1..7928a468da7f 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/FirewallEntryPoint/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/FirewallEntryPoint/bundles.php
@@ -9,8 +9,8 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
     new Symfony\Bundle\SecurityBundle\SecurityBundle(),
     new Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\FirewallEntryPointBundle\FirewallEntryPointBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/JsonLogin/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/JsonLogin/bundles.php
index 470ffff088cd..7dbd6e438072 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/JsonLogin/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/JsonLogin/bundles.php
@@ -9,9 +9,9 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     new Symfony\Bundle\SecurityBundle\SecurityBundle(),
     new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
     new Symfony\Bundle\TwigBundle\TwigBundle(),
     new Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\JsonLoginBundle\JsonLoginBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/LogoutAccess/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/LogoutAccess/bundles.php
index c934b52aee7c..9a26fb163a77 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/LogoutAccess/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/LogoutAccess/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\SecurityBundle\SecurityBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new SecurityBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/LogoutWithoutSessionInvalidation/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/LogoutWithoutSessionInvalidation/bundles.php
index c934b52aee7c..9a26fb163a77 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/LogoutWithoutSessionInvalidation/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/LogoutWithoutSessionInvalidation/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\SecurityBundle\SecurityBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new SecurityBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/PasswordEncode/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/PasswordEncode/bundles.php
index 2e9243712c8d..bcfd17425cfd 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/PasswordEncode/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/PasswordEncode/bundles.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     new Symfony\Bundle\SecurityBundle\SecurityBundle(),
     new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/RememberMeLogout/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/RememberMeLogout/bundles.php
index c934b52aee7c..9a26fb163a77 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/RememberMeLogout/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/RememberMeLogout/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\SecurityBundle\SecurityBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new SecurityBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/SecurityHelper/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/SecurityHelper/bundles.php
index 05df5ef6802f..181618ba99e4 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/SecurityHelper/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/SecurityHelper/bundles.php
@@ -13,8 +13,8 @@
 use Symfony\Bundle\SecurityBundle\SecurityBundle;
 use Symfony\Bundle\TwigBundle\TwigBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new SecurityBundle(),
     new TwigBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/StandardFormLogin/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/StandardFormLogin/bundles.php
index 3424c1eed1ab..95041e7ad465 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/StandardFormLogin/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/StandardFormLogin/bundles.php
@@ -14,9 +14,9 @@
 use Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\FormLoginBundle\FormLoginBundle;
 use Symfony\Bundle\TwigBundle\TwigBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new SecurityBundle(),
     new TwigBundle(),
     new FormLoginBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallConfigTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallConfigTest.php
index 4abf33e27669..99e897aa8ff2 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallConfigTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallConfigTest.php
@@ -18,8 +18,8 @@ class FirewallConfigTest extends TestCase
 {
     public function testGetters()
     {
-        $listeners = array('logout', 'remember_me', 'anonymous');
-        $options = array(
+        $listeners = ['logout', 'remember_me', 'anonymous'];
+        $options = [
             'request_matcher' => 'foo_request_matcher',
             'security' => false,
             'stateless' => false,
@@ -29,8 +29,8 @@ public function testGetters()
             'access_denied_url' => 'foo_access_denied_url',
             'access_denied_handler' => 'foo_access_denied_handler',
             'user_checker' => 'foo_user_checker',
-            'switch_user' => array('provider' => null, 'parameter' => '_switch_user', 'role' => 'ROLE_ALLOWED_TO_SWITCH'),
-        );
+            'switch_user' => ['provider' => null, 'parameter' => '_switch_user', 'role' => 'ROLE_ALLOWED_TO_SWITCH'],
+        ];
 
         $config = new FirewallConfig(
             'foo_firewall',
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
index 8466d9f06f70..0ebbd69b2302 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
@@ -25,12 +25,12 @@ public function testGetters()
         $config = new FirewallConfig('main', 'user_checker', 'request_matcher');
         $exceptionListener = $this->getExceptionListenerMock();
         $logoutListener = $this->getLogoutListenerMock();
-        $listeners = array(
+        $listeners = [
             $this
                 ->getMockBuilder(ListenerInterface::class)
                 ->disableOriginalConstructor()
                 ->getMock(),
-        );
+        ];
 
         $context = new FirewallContext($listeners, $exceptionListener, $logoutListener, $config);
 
@@ -48,10 +48,10 @@ public function testGetContext()
     {
         $exceptionListener = $this->getExceptionListenerMock();
         $logoutListener = $this->getLogoutListenerMock();
-        $context = (new FirewallContext($listeners = array(), $exceptionListener, $logoutListener, new FirewallConfig('main', 'request_matcher', 'user_checker')))
+        $context = (new FirewallContext($listeners = [], $exceptionListener, $logoutListener, new FirewallConfig('main', 'request_matcher', 'user_checker')))
             ->getContext();
 
-        $this->assertEquals(array($listeners, $exceptionListener, $logoutListener), $context);
+        $this->assertEquals([$listeners, $exceptionListener, $logoutListener], $context);
     }
 
     private function getExceptionListenerMock()
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallMapTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallMapTest.php
index 76a0db23e916..365e64572b0e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallMapTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallMapTest.php
@@ -31,13 +31,13 @@ public function testGetListenersWithEmptyMap()
     {
         $request = new Request();
 
-        $map = array();
+        $map = [];
         $container = $this->getMockBuilder(Container::class)->getMock();
         $container->expects($this->never())->method('get');
 
         $firewallMap = new FirewallMap($container, $map);
 
-        $this->assertEquals(array(array(), null, null), $firewallMap->getListeners($request));
+        $this->assertEquals([[], null, null], $firewallMap->getListeners($request));
         $this->assertNull($firewallMap->getFirewallConfig($request));
         $this->assertFalse($request->attributes->has(self::ATTRIBUTE_FIREWALL_CONTEXT));
     }
@@ -47,13 +47,13 @@ public function testGetListenersWithInvalidParameter()
         $request = new Request();
         $request->attributes->set(self::ATTRIBUTE_FIREWALL_CONTEXT, 'foo');
 
-        $map = array();
+        $map = [];
         $container = $this->getMockBuilder(Container::class)->getMock();
         $container->expects($this->never())->method('get');
 
         $firewallMap = new FirewallMap($container, $map);
 
-        $this->assertEquals(array(array(), null, null), $firewallMap->getListeners($request));
+        $this->assertEquals([[], null, null], $firewallMap->getListeners($request));
         $this->assertNull($firewallMap->getFirewallConfig($request));
         $this->assertFalse($request->attributes->has(self::ATTRIBUTE_FIREWALL_CONTEXT));
     }
@@ -68,7 +68,7 @@ public function testGetListeners()
         $firewallContext->expects($this->once())->method('getConfig')->willReturn($firewallConfig);
 
         $listener = $this->getMockBuilder(ListenerInterface::class)->getMock();
-        $firewallContext->expects($this->once())->method('getListeners')->willReturn(array($listener));
+        $firewallContext->expects($this->once())->method('getListeners')->willReturn([$listener]);
 
         $exceptionListener = $this->getMockBuilder(ExceptionListener::class)->disableOriginalConstructor()->getMock();
         $firewallContext->expects($this->once())->method('getExceptionListener')->willReturn($exceptionListener);
@@ -85,9 +85,9 @@ public function testGetListeners()
         $container = $this->getMockBuilder(Container::class)->getMock();
         $container->expects($this->exactly(2))->method('get')->willReturn($firewallContext);
 
-        $firewallMap = new FirewallMap($container, array('security.firewall.map.context.foo' => $matcher));
+        $firewallMap = new FirewallMap($container, ['security.firewall.map.context.foo' => $matcher]);
 
-        $this->assertEquals(array(array($listener), $exceptionListener, $logoutListener), $firewallMap->getListeners($request));
+        $this->assertEquals([[$listener], $exceptionListener, $logoutListener], $firewallMap->getListeners($request));
         $this->assertEquals($firewallConfig, $firewallMap->getFirewallConfig($request));
         $this->assertEquals('security.firewall.map.context.foo', $request->attributes->get(self::ATTRIBUTE_FIREWALL_CONTEXT));
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
index c479e62c2e36..90f31f0b3190 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
@@ -66,7 +66,7 @@ public function testResolve()
         $metadata = new ArgumentMetadata('foo', UserInterface::class, false, false, null);
 
         $this->assertTrue($resolver->supports(Request::create('/'), $metadata));
-        $this->assertSame(array($user), iterator_to_array($resolver->resolve(Request::create('/'), $metadata)));
+        $this->assertSame([$user], iterator_to_array($resolver->resolve(Request::create('/'), $metadata)));
     }
 
     public function testIntegration()
@@ -77,8 +77,8 @@ public function testIntegration()
         $tokenStorage = new TokenStorage();
         $tokenStorage->setToken($token);
 
-        $argumentResolver = new ArgumentResolver(null, array(new SecurityUserValueResolver($tokenStorage)));
-        $this->assertSame(array($user), $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user) {}));
+        $argumentResolver = new ArgumentResolver(null, [new SecurityUserValueResolver($tokenStorage)]);
+        $this->assertSame([$user], $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user) {}));
     }
 
     public function testIntegrationNoUser()
@@ -87,8 +87,8 @@ public function testIntegrationNoUser()
         $tokenStorage = new TokenStorage();
         $tokenStorage->setToken($token);
 
-        $argumentResolver = new ArgumentResolver(null, array(new SecurityUserValueResolver($tokenStorage), new DefaultValueResolver()));
-        $this->assertSame(array(null), $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user = null) {}));
+        $argumentResolver = new ArgumentResolver(null, [new SecurityUserValueResolver($tokenStorage), new DefaultValueResolver()]);
+        $this->assertSame([null], $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user = null) {}));
     }
 }
 
diff --git a/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheCacheWarmer.php b/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheCacheWarmer.php
index 00964322e95e..03233c59859c 100644
--- a/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheCacheWarmer.php
+++ b/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheCacheWarmer.php
@@ -37,7 +37,7 @@ class TemplateCacheCacheWarmer implements CacheWarmerInterface, ServiceSubscribe
     /**
      * @param array $paths Additional twig paths to warm
      */
-    public function __construct(ContainerInterface $container, TemplateFinderInterface $finder = null, array $paths = array())
+    public function __construct(ContainerInterface $container, TemplateFinderInterface $finder = null, array $paths = [])
     {
         // We don't inject the Twig environment directly as it depends on the
         // template locator (via the loader) which might be a cached one.
@@ -96,9 +96,9 @@ public function isOptional()
      */
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             'twig' => Environment::class,
-        );
+        ];
     }
 
     /**
@@ -112,10 +112,10 @@ public static function getSubscribedServices()
     private function findTemplatesInFolder($namespace, $dir)
     {
         if (!is_dir($dir)) {
-            return array();
+            return [];
         }
 
-        $templates = array();
+        $templates = [];
         $finder = new Finder();
 
         foreach ($finder->files()->followLinks()->in($dir) as $file) {
diff --git a/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php b/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
index 65867ffa9785..874bed33e9ff 100644
--- a/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
+++ b/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
@@ -81,8 +81,8 @@ public function isOptional()
      */
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             'twig' => Environment::class,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/TwigBundle/Controller/ExceptionController.php b/src/Symfony/Bundle/TwigBundle/Controller/ExceptionController.php
index a74a54c4d4de..ff47c3d2bab4 100644
--- a/src/Symfony/Bundle/TwigBundle/Controller/ExceptionController.php
+++ b/src/Symfony/Bundle/TwigBundle/Controller/ExceptionController.php
@@ -61,14 +61,14 @@ public function showAction(Request $request, FlattenException $exception, DebugL
 
         return new Response($this->twig->render(
             (string) $this->findTemplate($request, $request->getRequestFormat(), $code, $showException),
-            array(
+            [
                 'status_code' => $code,
                 'status_text' => isset(Response::$statusTexts[$code]) ? Response::$statusTexts[$code] : '',
                 'exception' => $exception,
                 'logger' => $logger,
                 'currentContent' => $currentContent,
-            )
-        ), 200, array('Content-Type' => $request->getMimeType($request->getRequestFormat()) ?: 'text/html'));
+            ]
+        ), 200, ['Content-Type' => $request->getMimeType($request->getRequestFormat()) ?: 'text/html']);
     }
 
     /**
diff --git a/src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php b/src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php
index a8b25adcf016..c529cfbb46d8 100644
--- a/src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php
+++ b/src/Symfony/Bundle/TwigBundle/Controller/PreviewErrorController.php
@@ -43,13 +43,13 @@ public function previewErrorPageAction(Request $request, $code)
          * the additional "showException" flag.
          */
 
-        $subRequest = $request->duplicate(null, null, array(
+        $subRequest = $request->duplicate(null, null, [
             '_controller' => $this->controller,
             'exception' => $exception,
             'logger' => null,
             'format' => $request->getRequestFormat(),
             'showException' => false,
-        ));
+        ]);
 
         return $this->kernel->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
     }
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
index 5089fc0651b9..79a6ad9ae850 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
@@ -45,7 +45,7 @@ public function process(ContainerBuilder $container)
             $reflClass = new \ReflectionClass('Symfony\Bridge\Twig\Extension\FormExtension');
 
             $coreThemePath = \dirname(\dirname($reflClass->getFileName())).'/Resources/views/Form';
-            $container->getDefinition('twig.loader.native_filesystem')->addMethodCall('addPath', array($coreThemePath));
+            $container->getDefinition('twig.loader.native_filesystem')->addMethodCall('addPath', [$coreThemePath]);
 
             $paths = $container->getDefinition('twig.template_iterator')->getArgument(2);
             $paths[$coreThemePath] = null;
@@ -67,9 +67,9 @@ public function process(ContainerBuilder $container)
             $container->getDefinition('twig.runtime.httpkernel')->addTag('twig.runtime');
 
             // inject Twig in the hinclude service if Twig is the only registered templating engine
-            if ((!$container->hasParameter('templating.engines') || array('twig') == $container->getParameter('templating.engines')) && $container->hasDefinition('fragment.renderer.hinclude')) {
+            if ((!$container->hasParameter('templating.engines') || ['twig'] == $container->getParameter('templating.engines')) && $container->hasDefinition('fragment.renderer.hinclude')) {
                 $container->getDefinition('fragment.renderer.hinclude')
-                    ->addTag('kernel.fragment_renderer', array('alias' => 'hinclude'))
+                    ->addTag('kernel.fragment_renderer', ['alias' => 'hinclude'])
                     ->replaceArgument(0, new Reference('twig'))
                 ;
             }
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/RuntimeLoaderPass.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/RuntimeLoaderPass.php
index bd6393bc9cea..82cf1c145a31 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/RuntimeLoaderPass.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/RuntimeLoaderPass.php
@@ -28,7 +28,7 @@ public function process(ContainerBuilder $container)
         }
 
         $definition = $container->getDefinition('twig.runtime_loader');
-        $mapping = array();
+        $mapping = [];
         foreach ($container->findTaggedServiceIds('twig.runtime', true) as $id => $attributes) {
             $def = $container->getDefinition($id);
             $mapping[$def->getClass()] = new Reference($id);
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigEnvironmentPass.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigEnvironmentPass.php
index fc2c7b86722d..be2c45a787dc 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigEnvironmentPass.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigEnvironmentPass.php
@@ -35,10 +35,10 @@ public function process(ContainerBuilder $container)
         // afterward. If not, the globals from the extensions will never
         // be registered.
         $currentMethodCalls = $definition->getMethodCalls();
-        $twigBridgeExtensionsMethodCalls = array();
-        $othersExtensionsMethodCalls = array();
+        $twigBridgeExtensionsMethodCalls = [];
+        $othersExtensionsMethodCalls = [];
         foreach ($container->findTaggedServiceIds('twig.extension', true) as $id => $attributes) {
-            $methodCall = array('addExtension', array(new Reference($id)));
+            $methodCall = ['addExtension', [new Reference($id)]];
             $extensionClass = $container->getDefinition($id)->getClass();
 
             if (\is_string($extensionClass) && 0 === strpos($extensionClass, 'Symfony\Bridge\Twig\Extension')) {
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigLoaderPass.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigLoaderPass.php
index 3fc2696904be..51b6d9b4f022 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigLoaderPass.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigLoaderPass.php
@@ -29,7 +29,7 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $prioritizedLoaders = array();
+        $prioritizedLoaders = [];
         $found = 0;
 
         foreach ($container->findTaggedServiceIds('twig.loader', true) as $id => $attributes) {
@@ -50,7 +50,7 @@ public function process(ContainerBuilder $container)
 
             foreach ($prioritizedLoaders as $loaders) {
                 foreach ($loaders as $loader) {
-                    $chainLoader->addMethodCall('addLoader', array(new Reference($loader)));
+                    $chainLoader->addMethodCall('addLoader', [new Reference($loader)]);
                 }
             }
 
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
index bfe4047b8368..4981905cde6d 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
@@ -54,11 +54,11 @@ private function addFormThemesSection(ArrayNodeDefinition $rootNode)
                 ->arrayNode('form_themes')
                     ->addDefaultChildrenIfNoneSet()
                     ->prototype('scalar')->defaultValue('form_div_layout.html.twig')->end()
-                    ->example(array('MyBundle::form.html.twig'))
+                    ->example(['MyBundle::form.html.twig'])
                     ->validate()
                         ->ifTrue(function ($v) { return !\in_array('form_div_layout.html.twig', $v); })
                         ->then(function ($v) {
-                            return array_merge(array('form_div_layout.html.twig'), $v);
+                            return array_merge(['form_div_layout.html.twig'], $v);
                         })
                     ->end()
                 ->end()
@@ -74,7 +74,7 @@ private function addGlobalsSection(ArrayNodeDefinition $rootNode)
                 ->arrayNode('globals')
                     ->normalizeKeys(false)
                     ->useAttributeAsKey('key')
-                    ->example(array('foo' => '"@bar"', 'pi' => 3.14))
+                    ->example(['foo' => '"@bar"', 'pi' => 3.14])
                     ->prototype('array')
                         ->beforeNormalization()
                             ->ifTrue(function ($v) { return \is_string($v) && 0 === strpos($v, '@'); })
@@ -83,7 +83,7 @@ private function addGlobalsSection(ArrayNodeDefinition $rootNode)
                                     return substr($v, 1);
                                 }
 
-                                return array('id' => substr($v, 1), 'type' => 'service');
+                                return ['id' => substr($v, 1), 'type' => 'service'];
                             })
                         ->end()
                         ->beforeNormalization()
@@ -92,18 +92,18 @@ private function addGlobalsSection(ArrayNodeDefinition $rootNode)
                                     $keys = array_keys($v);
                                     sort($keys);
 
-                                    return $keys !== array('id', 'type') && $keys !== array('value');
+                                    return $keys !== ['id', 'type'] && $keys !== ['value'];
                                 }
 
                                 return true;
                             })
-                            ->then(function ($v) { return array('value' => $v); })
+                            ->then(function ($v) { return ['value' => $v]; })
                         ->end()
                         ->children()
                             ->scalarNode('id')->end()
                             ->scalarNode('type')
                                 ->validate()
-                                    ->ifNotInArray(array('service'))
+                                    ->ifNotInArray(['service'])
                                     ->thenInvalid('The %s type is not supported')
                                 ->end()
                             ->end()
@@ -140,7 +140,7 @@ private function addTwigOptions(ArrayNodeDefinition $rootNode)
                     ->beforeNormalization()
                         ->always()
                         ->then(function ($paths) {
-                            $normalized = array();
+                            $normalized = [];
                             foreach ($paths as $path => $namespace) {
                                 if (\is_array($namespace)) {
                                     // xml
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
index ed4f46c0b640..a51a82bf5bfd 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
@@ -65,10 +65,10 @@ public function load(array $configs, ContainerBuilder $container)
             if (isset($config['globals'])) {
                 foreach ($config['globals'] as $name => $value) {
                     if (\is_array($value) && isset($value['key'])) {
-                        $configs[$key]['globals'][$name] = array(
+                        $configs[$key]['globals'][$name] = [
                             'key' => $name,
                             'value' => $value,
-                        );
+                        ];
                     }
                 }
             }
@@ -96,9 +96,9 @@ public function load(array $configs, ContainerBuilder $container)
         // register user-configured paths
         foreach ($config['paths'] as $path => $namespace) {
             if (!$namespace) {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path]);
             } else {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, $namespace]);
             }
         }
 
@@ -113,29 +113,29 @@ public function load(array $configs, ContainerBuilder $container)
 
             foreach ($bundle['children'] as $child) {
                 foreach ($bundleHierarchy[$child]['paths'] as $path) {
-                    $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+                    $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, $namespace]);
                 }
             }
 
             foreach ($bundle['paths'] as $path) {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, $namespace]);
             }
 
             // add exclusive namespace for root bundles only
             // to override a bundle template that also extends itself
             if (\count($bundle['paths']) > 0 && 0 === \count($bundle['parents'])) {
                 // the last path must be the bundle views directory
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array(end($bundle['paths']), '!'.$namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [end($bundle['paths']), '!'.$namespace]);
             }
         }
 
         if (file_exists($dir = $container->getParameter('kernel.root_dir').'/Resources/views')) {
-            $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($dir));
+            $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$dir]);
         }
         $container->addResource(new FileExistenceResource($dir));
 
         if (file_exists($dir = $container->getParameterBag()->resolveValue($config['default_path']))) {
-            $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($dir));
+            $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$dir]);
         }
         $container->addResource(new FileExistenceResource($dir));
 
@@ -143,9 +143,9 @@ public function load(array $configs, ContainerBuilder $container)
             $def = $container->getDefinition('twig');
             foreach ($config['globals'] as $key => $global) {
                 if (isset($global['type']) && 'service' === $global['type']) {
-                    $def->addMethodCall('addGlobal', array($key, new Reference($global['id'])));
+                    $def->addMethodCall('addGlobal', [$key, new Reference($global['id'])]);
                 } else {
-                    $def->addMethodCall('addGlobal', array($key, $global['value']));
+                    $def->addMethodCall('addGlobal', [$key, $global['value']]);
                 }
             }
         }
@@ -157,7 +157,7 @@ public function load(array $configs, ContainerBuilder $container)
         );
 
         if (isset($config['autoescape_service']) && isset($config['autoescape_service_method'])) {
-            $config['autoescape'] = array(new Reference($config['autoescape_service']), $config['autoescape_service_method']);
+            $config['autoescape'] = [new Reference($config['autoescape_service']), $config['autoescape_service_method']];
         }
         unset($config['autoescape_service'], $config['autoescape_service_method']);
 
@@ -175,7 +175,7 @@ public function load(array $configs, ContainerBuilder $container)
         }
 
         if (\PHP_VERSION_ID < 70000) {
-            $this->addClassesToCompile(array(
+            $this->addClassesToCompile([
                 'Twig_Environment',
                 'Twig_Extension',
                 'Twig_Extension_Core',
@@ -184,21 +184,21 @@ public function load(array $configs, ContainerBuilder $container)
                 'Twig_LoaderInterface',
                 'Twig_Markup',
                 'Twig_Template',
-            ));
+            ]);
         }
     }
 
     private function getBundleHierarchy(ContainerBuilder $container, array $config)
     {
-        $bundleHierarchy = array();
+        $bundleHierarchy = [];
 
         foreach ($container->getParameter('kernel.bundles_metadata') as $name => $bundle) {
             if (!array_key_exists($name, $bundleHierarchy)) {
-                $bundleHierarchy[$name] = array(
-                    'paths' => array(),
-                    'parents' => array(),
-                    'children' => array(),
-                );
+                $bundleHierarchy[$name] = [
+                    'paths' => [],
+                    'parents' => [],
+                    'children' => [],
+                ];
             }
 
             if (file_exists($dir = $container->getParameter('kernel.root_dir').'/Resources/'.$name.'/views')) {
@@ -223,18 +223,18 @@ private function getBundleHierarchy(ContainerBuilder $container, array $config)
             $bundleHierarchy[$name]['parents'][] = $bundle['parent'];
 
             if (!array_key_exists($bundle['parent'], $bundleHierarchy)) {
-                $bundleHierarchy[$bundle['parent']] = array(
-                    'paths' => array(),
-                    'parents' => array(),
-                    'children' => array(),
-                );
+                $bundleHierarchy[$bundle['parent']] = [
+                    'paths' => [],
+                    'parents' => [],
+                    'children' => [],
+                ];
             }
 
-            $bundleHierarchy[$bundle['parent']]['children'] = array_merge($bundleHierarchy[$name]['children'], array($name), $bundleHierarchy[$bundle['parent']]['children']);
+            $bundleHierarchy[$bundle['parent']]['children'] = array_merge($bundleHierarchy[$name]['children'], [$name], $bundleHierarchy[$bundle['parent']]['children']);
 
             foreach ($bundleHierarchy[$bundle['parent']]['parents'] as $parent) {
                 $bundleHierarchy[$name]['parents'][] = $parent;
-                $bundleHierarchy[$parent]['children'] = array_merge($bundleHierarchy[$name]['children'], array($name), $bundleHierarchy[$parent]['children']);
+                $bundleHierarchy[$parent]['children'] = array_merge($bundleHierarchy[$name]['children'], [$name], $bundleHierarchy[$parent]['children']);
             }
 
             foreach ($bundleHierarchy[$name]['children'] as $child) {
diff --git a/src/Symfony/Bundle/TwigBundle/Loader/FilesystemLoader.php b/src/Symfony/Bundle/TwigBundle/Loader/FilesystemLoader.php
index a938cb01d9e0..61dadacc670f 100644
--- a/src/Symfony/Bundle/TwigBundle/Loader/FilesystemLoader.php
+++ b/src/Symfony/Bundle/TwigBundle/Loader/FilesystemLoader.php
@@ -33,7 +33,7 @@ class FilesystemLoader extends BaseFilesystemLoader
      */
     public function __construct(FileLocatorInterface $locator, TemplateNameParserInterface $parser, $rootPath = null)
     {
-        parent::__construct(array(), $rootPath);
+        parent::__construct([], $rootPath);
 
         $this->locator = $locator;
         $this->parser = $parser;
diff --git a/src/Symfony/Bundle/TwigBundle/TemplateIterator.php b/src/Symfony/Bundle/TwigBundle/TemplateIterator.php
index 01262e015ba7..323602943fea 100644
--- a/src/Symfony/Bundle/TwigBundle/TemplateIterator.php
+++ b/src/Symfony/Bundle/TwigBundle/TemplateIterator.php
@@ -33,7 +33,7 @@ class TemplateIterator implements \IteratorAggregate
      * @param array           $paths       Additional Twig paths to warm
      * @param string          $defaultPath The directory where global templates can be stored
      */
-    public function __construct(KernelInterface $kernel, $rootDir, array $paths = array(), $defaultPath = null)
+    public function __construct(KernelInterface $kernel, $rootDir, array $paths = [], $defaultPath = null)
     {
         $this->kernel = $kernel;
         $this->rootDir = $rootDir;
@@ -52,7 +52,7 @@ public function getIterator()
 
         $this->templates = array_merge(
             $this->findTemplatesInDirectory($this->rootDir.'/Resources/views'),
-            $this->findTemplatesInDirectory($this->defaultPath, null, array('bundles'))
+            $this->findTemplatesInDirectory($this->defaultPath, null, ['bundles'])
         );
         foreach ($this->kernel->getBundles() as $bundle) {
             $name = $bundle->getName();
@@ -83,13 +83,13 @@ public function getIterator()
      *
      * @return array
      */
-    private function findTemplatesInDirectory($dir, $namespace = null, array $excludeDirs = array())
+    private function findTemplatesInDirectory($dir, $namespace = null, array $excludeDirs = [])
     {
         if (!is_dir($dir)) {
-            return array();
+            return [];
         }
 
-        $templates = array();
+        $templates = [];
         foreach (Finder::create()->files()->followLinks()->in($dir)->exclude($excludeDirs) as $file) {
             $templates[] = (null !== $namespace ? '@'.$namespace.'/' : '').str_replace('\\', '/', $file->getRelativePathname());
         }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/ContainerAwareRuntimeLoaderTest.php b/src/Symfony/Bundle/TwigBundle/Tests/ContainerAwareRuntimeLoaderTest.php
index 3557fea6907a..88f8fb21e7e0 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/ContainerAwareRuntimeLoaderTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/ContainerAwareRuntimeLoaderTest.php
@@ -25,9 +25,9 @@ public function testLoad()
         $container = $this->getMockBuilder(ContainerInterface::class)->getMock();
         $container->expects($this->once())->method('get')->with('foo');
 
-        $loader = new ContainerAwareRuntimeLoader($container, array(
+        $loader = new ContainerAwareRuntimeLoader($container, [
             'FooClass' => 'foo',
-        ));
+        ]);
         $loader->load('FooClass');
     }
 
@@ -35,7 +35,7 @@ public function testLoadWithoutAMatch()
     {
         $logger = $this->getMockBuilder(LoggerInterface::class)->getMock();
         $logger->expects($this->once())->method('warning')->with('Class "BarClass" is not configured as a Twig runtime. Add the "twig.runtime" tag to the related service in the container.');
-        $loader = new ContainerAwareRuntimeLoader($this->getMockBuilder(ContainerInterface::class)->getMock(), array(), $logger);
+        $loader = new ContainerAwareRuntimeLoader($this->getMockBuilder(ContainerInterface::class)->getMock(), [], $logger);
         $this->assertNull($loader->load('BarClass'));
     }
 }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Controller/ExceptionControllerTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Controller/ExceptionControllerTest.php
index c58cf686f0b0..800da68c9b2f 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Controller/ExceptionControllerTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Controller/ExceptionControllerTest.php
@@ -22,7 +22,7 @@ class ExceptionControllerTest extends TestCase
 {
     public function testShowActionCanBeForcedToShowErrorPage()
     {
-        $twig = $this->createTwigEnv(array('@Twig/Exception/error404.html.twig' => '<html>not found</html>'));
+        $twig = $this->createTwigEnv(['@Twig/Exception/error404.html.twig' => '<html>not found</html>']);
 
         $request = $this->createRequest('html');
         $request->attributes->set('showException', false);
@@ -37,7 +37,7 @@ public function testShowActionCanBeForcedToShowErrorPage()
 
     public function testFallbackToHtmlIfNoTemplateForRequestedFormat()
     {
-        $twig = $this->createTwigEnv(array('@Twig/Exception/error.html.twig' => '<html></html>'));
+        $twig = $this->createTwigEnv(['@Twig/Exception/error.html.twig' => '<html></html>']);
 
         $request = $this->createRequest('txt');
         $exception = FlattenException::create(new \Exception());
@@ -50,7 +50,7 @@ public function testFallbackToHtmlIfNoTemplateForRequestedFormat()
 
     public function testFallbackToHtmlWithFullExceptionIfNoTemplateForRequestedFormatAndExceptionsShouldBeShown()
     {
-        $twig = $this->createTwigEnv(array('@Twig/Exception/exception_full.html.twig' => '<html></html>'));
+        $twig = $this->createTwigEnv(['@Twig/Exception/exception_full.html.twig' => '<html></html>']);
 
         $request = $this->createRequest('txt');
         $request->attributes->set('showException', true);
@@ -64,7 +64,7 @@ public function testFallbackToHtmlWithFullExceptionIfNoTemplateForRequestedForma
 
     public function testResponseHasRequestedMimeType()
     {
-        $twig = $this->createTwigEnv(array('@Twig/Exception/error.json.twig' => '{}'));
+        $twig = $this->createTwigEnv(['@Twig/Exception/error.json.twig' => '{}']);
 
         $request = $this->createRequest('json');
         $exception = FlattenException::create(new \Exception());
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/ExtensionPassTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/ExtensionPassTest.php
index 00c2217f07b3..539a952a607a 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/ExtensionPassTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/ExtensionPassTest.php
@@ -30,12 +30,12 @@ public function testProcessDoesNotDropExistingFileLoaderMethodCalls()
         $container->register('twig.extension.expression');
 
         $nativeTwigLoader = new Definition('\Twig\Loader\FilesystemLoader');
-        $nativeTwigLoader->addMethodCall('addPath', array());
+        $nativeTwigLoader->addMethodCall('addPath', []);
         $container->setDefinition('twig.loader.native_filesystem', $nativeTwigLoader);
 
         $filesystemLoader = new Definition('\Symfony\Bundle\TwigBundle\Loader\FilesystemLoader');
-        $filesystemLoader->setArguments(array(null, null, null));
-        $filesystemLoader->addMethodCall('addPath', array());
+        $filesystemLoader->setArguments([null, null, null]);
+        $filesystemLoader->addMethodCall('addPath', []);
         $container->setDefinition('twig.loader.filesystem', $filesystemLoader);
 
         $extensionPass = new ExtensionPass();
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigLoaderPassTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigLoaderPassTest.php
index 621967a596df..3b65273d6d73 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigLoaderPassTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigLoaderPassTest.php
@@ -72,9 +72,9 @@ public function testMapperPassWithTwoTaggedLoadersWithPriority()
     {
         $this->builder->setDefinition('twig.loader.chain', $this->chainLoader);
         $this->builder->register('test_loader_1')
-            ->addTag('twig.loader', array('priority' => 100));
+            ->addTag('twig.loader', ['priority' => 100]);
         $this->builder->register('test_loader_2')
-            ->addTag('twig.loader', array('priority' => 200));
+            ->addTag('twig.loader', ['priority' => 200]);
 
         $this->pass->process($this->builder);
 
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/ConfigurationTest.php
index d3f8652c4b6d..049d05b5cac8 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -19,13 +19,13 @@ class ConfigurationTest extends TestCase
 {
     public function testDoNoDuplicateDefaultFormResources()
     {
-        $input = array(
-            'form_themes' => array('form_div_layout.html.twig'),
-        );
+        $input = [
+            'form_themes' => ['form_div_layout.html.twig'],
+        ];
 
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(), array($input));
+        $config = $processor->processConfiguration(new Configuration(), [$input]);
 
-        $this->assertEquals(array('form_div_layout.html.twig'), $config['form_themes']);
+        $this->assertEquals(['form_div_layout.html.twig'], $config['form_themes']);
     }
 }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/customTemplateEscapingGuesser.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/customTemplateEscapingGuesser.php
index ab429237bb43..c9acb3c25396 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/customTemplateEscapingGuesser.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/customTemplateEscapingGuesser.php
@@ -1,6 +1,6 @@
 <?php
 
-$container->loadFromExtension('twig', array(
+$container->loadFromExtension('twig', [
     'autoescape_service' => 'my_project.some_bundle.template_escaping_guesser',
     'autoescape_service_method' => 'guess',
-));
+]);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/empty.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/empty.php
index efd2df5f4791..d107fd90d8f5 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/empty.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/empty.php
@@ -1,3 +1,3 @@
 <?php
 
-$container->loadFromExtension('twig', array());
+$container->loadFromExtension('twig', []);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/extra.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/extra.php
index 28b8281a99e8..49acc87a8713 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/
10000
DependencyInjection/Fixtures/php/extra.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/extra.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('twig', array(
-     'paths' => array(
+$container->loadFromExtension('twig', [
+     'paths' => [
          'namespaced_path3' => 'namespace3',
-      ),
-));
+      ],
+]);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/formats.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/formats.php
index 630a9a9edc01..7e85738809fb 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/formats.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/formats.php
@@ -1,14 +1,14 @@
 <?php
 
-$container->loadFromExtension('twig', array(
-    'date' => array(
+$container->loadFromExtension('twig', [
+    'date' => [
         'format' => 'Y-m-d',
         'interval_format' => '%d',
         'timezone' => 'Europe/Berlin',
-    ),
-    'number_format' => array(
+    ],
+    'number_format' => [
         'decimals' => 2,
         'decimal_point' => ',',
         'thousands_separator' => '.',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/full.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/full.php
index 47b9e5d835e7..8dd2be40960b 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/full.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/full.php
@@ -1,15 +1,15 @@
 <?php
 
-$container->loadFromExtension('twig', array(
-    'form_themes' => array(
+$container->loadFromExtension('twig', [
+    'form_themes' => [
         'MyBundle::form.html.twig',
-    ),
-    'globals' => array(
+    ],
+    'globals' => [
         'foo' => '@bar',
         'baz' => '@@qux',
         'pi' => 3.14,
-        'bad' => array('key' => 'foo'),
-    ),
+        'bad' => ['key' => 'foo'],
+    ],
     'auto_reload' => true,
     'autoescape' => true,
     'base_template_class' => 'stdClass',
@@ -18,10 +18,10 @@
     'debug' => true,
     'strict_variables' => true,
     'default_path' => '%kernel.project_dir%/Fixtures/templates',
-    'paths' => array(
+    'paths' => [
         'path1',
         'path2',
         'namespaced_path1' => 'namespace1',
         'namespaced_path2' => 'namespace2',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
index 112d00d4f65c..a079dbd11bc7 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
@@ -29,7 +29,7 @@ public function testLoadEmptyConfiguration()
     {
         $container = $this->createContainer();
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array());
+        $container->loadFromExtension('twig', []);
         $this->compileContainer($container);
 
         $this->assertEquals('Twig\Environment', $container->getDefinition('twig')->getClass(), '->load() loads the twig.xml file');
@@ -72,9 +72,9 @@ public function testLoadFullConfiguration($format)
         $this->assertEquals(3.14, $calls[4][1][1], '->load() registers variables as Twig globals');
 
         // Yaml and Php specific configs
-        if (\in_array($format, array('yml', 'php'))) {
+        if (\in_array($format, ['yml', 'php'])) {
             $this->assertEquals('bad', $calls[5][1][0], '->load() registers variables as Twig globals');
-            $this->assertEquals(array('key' => 'foo'), $calls[5][1][1], '->load() registers variables as Twig globals');
+            $this->assertEquals(['key' => 'foo'], $calls[5][1][1], '->load() registers variables as Twig globals');
         }
 
         // Twig options
@@ -99,7 +99,7 @@ public function testLoadCustomTemplateEscapingGuesserConfiguration($format)
         $this->compileContainer($container);
 
         $options = $container->getDefinition('twig')->getArgument(1);
-        $this->assertEquals(array(new Reference('my_project.some_bundle.template_escaping_guesser'), 'guess'), $options['autoescape']);
+        $this->assertEquals([new Reference('my_project.some_bundle.template_escaping_guesser'), 'guess'], $options['autoescape']);
     }
 
     /**
@@ -138,8 +138,8 @@ public function testLoadCustomDateFormats($fileFormat)
 
     public function testGlobalsWithDifferentTypesAndValues()
     {
-        $globals = array(
-            'array' => array(),
+        $globals = [
+            'array' => [],
             'false' => false,
             'float' => 2.0,
             'integer' => 3,
@@ -147,11 +147,11 @@ public function testGlobalsWithDifferentTypesAndValues()
             'object' => new \stdClass(),
             'string' => 'foo',
             'true' => true,
-        );
+        ];
 
         $container = $this->createContainer();
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array('globals' => $globals));
+        $container->loadFromExtension('twig', ['globals' => $globals]);
         $this->compileContainer($container);
 
         $calls = $container->getDefinition('twig')->getMethodCalls();
@@ -175,49 +175,49 @@ public function testTwigLoaderPaths($format)
         $this->compileContainer($container);
 
         $def = $container->getDefinition('twig.loader.native_filesystem');
-        $paths = array();
+        $paths = [];
         foreach ($def->getMethodCalls() as $call) {
             if ('addPath' === $call[0] && false === strpos($call[1][0], 'Form')) {
                 $paths[] = $call[1];
             }
         }
 
-        $this->assertEquals(array(
-            array('path1'),
-            array('path2'),
-            array('namespaced_path1', 'namespace1'),
-            array('namespaced_path2', 'namespace2'),
-            array('namespaced_path3', 'namespace3'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'ChildChildChildChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'ChildChildChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle/Resources/views', 'ChildChildChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'Twig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle/Resources/views', 'Twig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildTwigBundle/Resources/views', 'Twig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildTwigBundle/Resources/views', 'Twig'),
-            array(__DIR__.'/Fixtures/Resources/TwigBundle/views', 'Twig'),
-            array(__DIR__.'/Fixtures/templates/bundles/TwigBundle', 'Twig'),
-            array(realpath(__DIR__.'/../..').'/Resources/views', 'Twig'),
-            array(realpath(__DIR__.'/../..').'/Resources/views', '!Twig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'ChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle/Resources/views', 'ChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildTwigBundle/Resources/views', 'ChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildTwigBundle/Resources/views', 'ChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'ChildChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle/Resources/views', 'ChildChildTwig'),
-            array(__DIR__.'/Fixtures/Bundle/ChildChildTwigBundle/Resources/views', 'ChildChildTwig'),
-            array(__DIR__.'/Fixtures/Resources/views'),
-            array(__DIR__.'/Fixtures/templates'),
-        ), $paths);
+        $this->assertEquals([
+            ['path1'],
+            ['path2'],
+            ['namespaced_path1', 'namespace1'],
+            ['namespaced_path2', 'namespace2'],
+            ['namespaced_path3', 'namespace3'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'ChildChildChildChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'ChildChildChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle/Resources/views', 'ChildChildChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'Twig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle/Resources/views', 'Twig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildTwigBundle/Resources/views', 'Twig'],
+            [__DIR__.'/Fixtures/Bundle/ChildTwigBundle/Resources/views', 'Twig'],
+            [__DIR__.'/Fixtures/Resources/TwigBundle/views', 'Twig'],
+            [__DIR__.'/Fixtures/templates/bundles/TwigBundle', 'Twig'],
+            [realpath(__DIR__.'/../..').'/Resources/views', 'Twig'],
+            [realpath(__DIR__.'/../..').'/Resources/views', '!Twig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'ChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle/Resources/views', 'ChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildTwigBundle/Resources/views', 'ChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildTwigBundle/Resources/views', 'ChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle/Resources/views', 'ChildChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle/Resources/views', 'ChildChildTwig'],
+            [__DIR__.'/Fixtures/Bundle/ChildChildTwigBundle/Resources/views', 'ChildChildTwig'],
+            [__DIR__.'/Fixtures/Resources/views'],
+            [__DIR__.'/Fixtures/templates'],
+        ], $paths);
     }
 
     public function getFormats()
     {
-        return array(
-            array('php'),
-            array('yml'),
-            array('xml'),
-        );
+        return [
+            ['php'],
+            ['yml'],
+            ['xml'],
+        ];
     }
 
     /**
@@ -231,7 +231,7 @@ public function testStopwatchExtensionAvailability($debug, $stopwatchEnabled, $e
             $container->register('debug.stopwatch', 'Symfony\Component\Stopwatch\Stopwatch');
         }
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array());
+        $container->loadFromExtension('twig', []);
         $container->setAlias('test.twig.extension.debug.stopwatch', 'twig.extension.debug.stopwatch')->setPublic(true);
         $this->compileContainer($container);
 
@@ -244,19 +244,19 @@ public function testStopwatchExtensionAvailability($debug, $stopwatchEnabled, $e
 
     public function stopwatchExtensionAvailabilityProvider()
     {
-        return array(
-            'debug-and-stopwatch-enabled' => array(true, true, true),
-            'only-stopwatch-enabled' => array(false, true, false),
-            'only-debug-enabled' => array(true, false, false),
-            'debug-and-stopwatch-disabled' => array(false, false, false),
-        );
+        return [
+            'debug-and-stopwatch-enabled' => [true, true, true],
+            'only-stopwatch-enabled' => [false, true, false],
+            'only-debug-enabled' => [true, false, false],
+            'debug-and-stopwatch-disabled' => [false, false, false],
+        ];
     }
 
     public function testRuntimeLoader()
     {
         $container = $this->createContainer();
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array());
+        $container->loadFromExtension('twig', []);
         $container->setParameter('kernel.environment', 'test');
         $container->setParameter('debug.file_link_format', 'test');
         $container->setParameter('foo', 'FooClass');
@@ -265,7 +265,7 @@ public function testRuntimeLoader()
         $container->register('templating.name_parser', 'FooClass');
         $container->register('foo', '%foo%')->addTag('twig.runtime');
         $container->addCompilerPass(new RuntimeLoaderPass(), PassConfig::TYPE_BEFORE_REMOVING);
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         $loader = $container->getDefinition('twig.runtime_loader');
@@ -278,55 +278,55 @@ public function testRuntimeLoader()
 
     private function createContainer()
     {
-        $container = new ContainerBuilder(new ParameterBag(array(
+        $container = new ContainerBuilder(new ParameterBag([
             'kernel.cache_dir' => __DIR__,
             'kernel.root_dir' => __DIR__.'/Fixtures',
             'kernel.project_dir' => __DIR__,
             'kernel.charset' => 'UTF-8',
             'kernel.debug' => false,
-            'kernel.bundles' => array(
+            'kernel.bundles' => [
                 'TwigBundle' => 'Symfony\\Bundle\\TwigBundle\\TwigBundle',
                 'ChildTwigBundle' => 'Symfony\\Bundle\\TwigBundle\\Tests\\DependencyInjection\\Fixtures\\Bundle\\ChildTwigBundle\\ChildTwigBundle',
                 'ChildChildTwigBundle' => 'Symfony\\Bundle\\TwigBundle\\Tests\\DependencyInjection\\Fixtures\\Bundle\\ChildChildTwigBundle\\ChildChildTwigBundle',
                 'ChildChildChildTwigBundle' => 'Symfony\\Bundle\\TwigBundle\\Tests\\DependencyInjection\\Fixtures\\Bundle\\ChildChildChildTwigBundle\\ChildChildChildTwigBundle',
                 'ChildChildChildChildTwigBundle' => 'Symfony\\Bundle\\TwigBundle\\Tests\\DependencyInjection\\Fixtures\\Bundle\\ChildChildChildChildTwigBundle\\ChildChildChildChildTwigBundle',
-            ),
-            'kernel.bundles_metadata' => array(
-                'ChildChildChildChildTwigBundle' => array(
+            ],
+            'kernel.bundles_metadata' => [
+                'ChildChildChildChildTwigBundle' => [
                     'namespace' => 'Symfony\\Bundle\\TwigBundle\\Tests\\DependencyInjection\\Fixtures\\Bundle\\ChildChildChildChildTwigBundle\\ChildChildChildChildTwigBundle',
                     'parent' => 'ChildChildChildTwigBundle',
                     'path' => __DIR__.'/Fixtures/Bundle/ChildChildChildChildTwigBundle',
-                ),
-                'TwigBundle' => array(
+                ],
+                'TwigBundle' => [
                     'namespace' => 'Symfony\\Bundle\\TwigBundle',
                     'parent' => null,
                     'path' => realpath(__DIR__.'/../..'),
-                ),
-                'ChildTwigBundle' => array(
+                ],
+                'ChildTwigBundle' => [
                     'namespace' => 'Symfony\\Bundle\\TwigBundle\\Tests\\DependencyInjection\\Fixtures\\Bundle\\ChildTwigBundle\\ChildTwigBundle',
                     'parent' => 'TwigBundle',
                     'path' => __DIR__.'/Fixtures/Bundle/ChildTwigBundle',
-                ),
-                'ChildChildChildTwigBundle' => array(
+                ],
+                'ChildChildChildTwigBundle' => [
                     'namespace' => 'Symfony\\Bundle\\TwigBundle\\Tests\\DependencyInjection\\Fixtures\\Bundle\\ChildChildChildTwigBundle\\ChildChildChildTwigBundle',
                     'parent' => 'ChildChildTwigBundle',
                     'path' => __DIR__.'/Fixtures/Bundle/ChildChildChildTwigBundle',
-                ),
-                'ChildChildTwigBundle' => array(
+                ],
+                'ChildChildTwigBundle' => [
                     'namespace' => 'Symfony\\Bundle\\TwigBundle\\Tests\\DependencyInjection\\Fixtures\\Bundle\\ChildChildTwigBundle\\ChildChildTwigBundle',
                     'parent' => 'ChildTwigBundle',
                     'path' => __DIR__.'/Fixtures/Bundle/ChildChildTwigBundle',
-                ),
-            ),
-        )));
+                ],
+            ],
+        ]));
 
         return $container;
     }
 
     private function compileContainer(ContainerBuilder $container)
     {
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
     }
 
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
index 067502edf12c..63710a8e16ea 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
@@ -83,26 +83,26 @@ public function getName()
 
     public function registerBundles()
     {
-        return array(new FrameworkBundle(), new TwigBundle());
+        return [new FrameworkBundle(), new TwigBundle()];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
     {
         $loader->load(function ($container) {
-            $container->loadFromExtension('framework', array(
+            $container->loadFromExtension('framework', [
                 'secret' => '$ecret',
-                'form' => array('enabled' => false),
-            ));
+                'form' => ['enabled' => false],
+            ]);
         });
 
         if ($this->withTemplating) {
             $loader->load(function ($container) {
-                $container->loadFromExtension('framework', array(
+                $container->loadFromExtension('framework', [
                     'secret' => '$ecret',
-                    'templating' => array('engines' => array('twig')),
-                    'router' => array('resource' => '%kernel.project_dir%/Resources/config/empty_routing.yml'),
-                    'form' => array('enabled' => false),
-                ));
+                    'templating' => ['engines' => ['twig']],
+                    'router' => ['resource' => '%kernel.project_dir%/Resources/config/empty_routing.yml'],
+                    'form' => ['enabled' => false],
+                ]);
             });
         }
     }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/EmptyAppTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/EmptyAppTest.php
index b25d6ad6502e..86d933b55822 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/EmptyAppTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/EmptyAppTest.php
@@ -32,7 +32,7 @@ class EmptyAppKernel extends Kernel
 {
     public function registerBundles()
     {
-        return array(new TwigBundle());
+        return [new TwigBundle()];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
index 97e27fa40fc0..dddfff76efcb 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
@@ -55,16 +55,16 @@ class NoTemplatingEntryKernel extends Kernel
 {
     public function registerBundles()
     {
-        return array(new FrameworkBundle(), new TwigBundle());
+        return [new FrameworkBundle(), new TwigBundle()];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
     {
         $loader->load(function ($container) {
-            $container->loadFromExtension('framework', array(
+            $container->loadFromExtension('framework', [
                 'secret' => '$ecret',
-                'form' => array('enabled' => false),
-            ));
+                'form' => ['enabled' => false],
+            ]);
         });
     }
 
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/TemplateIteratorTest.php b/src/Symfony/Bundle/TwigBundle/Tests/TemplateIteratorTest.php
index 04eb5e187838..33a873dba88d 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/TemplateIteratorTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/TemplateIteratorTest.php
@@ -22,22 +22,22 @@ public function testGetIterator()
         $bundle->expects($this->any())->method('getPath')->will($this->returnValue(__DIR__.'/Fixtures/templates/BarBundle'));
 
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\Kernel')->disableOriginalConstructor()->getMock();
-        $kernel->expects($this->any())->method('getBundles')->will($this->returnValue(array(
+        $kernel->expects($this->any())->method('getBundles')->will($this->returnValue([
             $bundle,
-        )));
-        $iterator = new TemplateIterator($kernel, __DIR__.'/Fixtures/templates', array(__DIR__.'/Fixtures/templates/Foo' => 'Foo'), __DIR__.'/DependencyInjection/Fixtures/templates');
+        ]));
+        $iterator = new TemplateIterator($kernel, __DIR__.'/Fixtures/templates', [__DIR__.'/Fixtures/templates/Foo' => 'Foo'], __DIR__.'/DependencyInjection/Fixtures/templates');
 
         $sorted = iterator_to_array($iterator);
         sort($sorted);
         $this->assertEquals(
-            array(
+            [
                 '@Bar/base.html.twig',
                 '@Bar/index.html.twig',
                 '@Bar/layout.html.twig',
                 '@Foo/index.html.twig',
                 'layout.html.twig',
                 'sub/sub.html.twig',
-            ),
+            ],
             $sorted
         );
     }
diff --git a/src/Symfony/Bundle/TwigBundle/TwigEngine.php b/src/Symfony/Bundle/TwigBundle/TwigEngine.php
index 1ac56a6f59ca..39115199e5dd 100644
--- a/src/Symfony/Bundle/TwigBundle/TwigEngine.php
+++ b/src/Symfony/Bundle/TwigBundle/TwigEngine.php
@@ -39,7 +39,7 @@ public function __construct(Environment $environment, TemplateNameParserInterfac
     /**
      * {@inheritdoc}
      */
-    public function render($name, array $parameters = array())
+    public function render($name, array $parameters = [])
     {
         try {
             return parent::render($name, $parameters);
@@ -63,7 +63,7 @@ public function render($name, array $parameters = array())
      *
      * @throws Error if something went wrong like a thrown exception while rendering the template
      */
-    public function renderResponse($view, array $parameters = array(), Response $response = null)
+    public function renderResponse($view, array $parameters = [], Response $response = null)
     {
         if (null === $response) {
             $response = new Response();
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Controller/ExceptionController.php b/src/Symfony/Bundle/WebProfilerBundle/Controller/ExceptionController.php
index 0fedee13de19..4ae1afcf8324 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Controller/ExceptionController.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Controller/ExceptionController.php
@@ -63,21 +63,21 @@ public function showAction($token)
         if (!$this->twig->getLoader()->exists($template)) {
             $handler = new ExceptionHandler($this->debug, $this->twig->getCharset(), $this->fileLinkFormat);
 
-            return new Response($handler->getContent($exception), 200, array('Content-Type' => 'text/html'));
+            return new Response($handler->getContent($exception), 200, ['Content-Type' => 'text/html']);
         }
 
         $code = $exception->getStatusCode();
 
         return new Response($this->twig->render(
             $template,
-            array(
+            [
                 'status_code' => $code,
                 'status_text' => Response::$statusTexts[$code],
                 'exception' => $exception,
                 'logger' => null,
                 'currentContent' => '',
-            )
-        ), 200, array('Content-Type' => 'text/html'));
+            ]
+        ), 200, ['Content-Type' => 'text/html']);
     }
 
     /**
@@ -103,10 +103,10 @@ public function cssAction($token)
         if (!$this->templateExists($template)) {
             $handler = new ExceptionHandler($this->debug, $this->twig->getCharset(), $this->fileLinkFormat);
 
-            return new Response($handler->getStylesheet($exception), 200, array('Content-Type' => 'text/css'));
+            return new Response($handler->getStylesheet($exception), 200, ['Content-Type' => 'text/css']);
         }
 
-        return new Response($this->twig->render('@WebProfiler/Collector/exception.css.twig'), 200, array('Content-Type' => 'text/css'));
+        return new Response($this->twig->render('@WebProfiler/Collector/exception.css.twig'), 200, ['Content-Type' => 'text/css']);
     }
 
     protected function getTemplate()
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Controller/ProfilerController.php b/src/Symfony/Bundle/WebProfilerBundle/Controller/ProfilerController.php
index afcf3f73de0b..4333c74d2ff8 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Controller/ProfilerController.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Controller/ProfilerController.php
@@ -71,7 +71,7 @@ public function homeAction()
 
         $this->profiler->disable();
 
-        return new RedirectResponse($this->generator->generate('_profiler_search_results', array('token' => 'empty', 'limit' => 10)), 302, array('Content-Type' => 'text/html'));
+        return new RedirectResponse($this->generator->generate('_profiler_search_results', ['token' => 'empty', 'limit' => 10]), 302, ['Content-Type' => 'text/html']);
     }
 
     /**
@@ -104,14 +104,14 @@ public function panelAction(Request $request, $token)
         }
 
         if (!$profile = $this->profiler->loadProfile($token)) {
-            return new Response($this->twig->render('@WebProfiler/Profiler/info.html.twig', array('about' => 'no_token', 'token' => $token, 'request' => $request)), 200, array('Content-Type' => 'text/html'));
+            return new Response($this->twig->render('@WebProfiler/Profiler/info.html.twig', ['about' => 'no_token', 'token' => $token, 'request' => $request]), 200, ['Content-Type' => 'text/html']);
         }
 
         if (!$profile->hasCollector($panel)) {
             throw new NotFoundHttpException(sprintf('Panel "%s" is not available for token "%s".', $panel, $token));
         }
 
-        return new Response($this->twig->render($this->getTemplateManager()->getName($profile, $panel), array(
+        return new Response($this->twig->render($this->getTemplateManager()->getName($profile, $panel), [
             'token' => $token,
             'profile' => $profile,
             'collector' => $profile->getCollector($panel),
@@ -121,7 +121,7 @@ public function panelAction(Request $request, $token)
             'templates' => $this->getTemplateManager()->getNames($profile),
             'is_ajax' => $request->isXmlHttpRequest(),
             'profiler_markup_version' => 2, // 1 = original profiler, 2 = Symfony 2.8+ profiler
-        )), 200, array('Content-Type' => 'text/html'));
+        ]), 200, ['Content-Type' => 'text/html']);
     }
 
     /**
@@ -148,13 +148,13 @@ public function toolbarAction(Request $request, $token)
         }
 
         if ('empty' === $token || null === $token) {
-            return new Response('', 200, array('Content-Type' => 'text/html'));
+            return new Response('', 200, ['Content-Type' => 'text/html']);
         }
 
         $this->profiler->disable();
 
         if (!$profile = $this->profiler->loadProfile($token)) {
-            return new Response('', 404, array('Content-Type' => 'text/html'));
+            return new Response('', 404, ['Content-Type' => 'text/html']);
         }
 
         // the toolbar position (top, bottom, normal, or null -- use the configuration)
@@ -164,12 +164,12 @@ public function toolbarAction(Request $request, $token)
 
         $url = null;
         try {
-            $url = $this->generator->generate('_profiler', array('token' => $token));
+            $url = $this->generator->generate('_profiler', ['token' => $token]);
         } catch (\Exception $e) {
             // the profiler is not enabled
         }
 
-        return $this->renderWithCspNonces($request, '@WebProfiler/Profiler/toolbar.html.twig', array(
+        return $this->renderWithCspNonces($request, '@WebProfiler/Profiler/toolbar.html.twig', [
             'request' => $request,
             'position' => $position,
             'profile' => $profile,
@@ -177,7 +177,7 @@ public function toolbarAction(Request $request, $token)
             'profiler_url' => $url,
             'token' => $token,
             'profiler_markup_version' => 2, // 1 = original toolbar, 2 = Symfony 2.8+ toolbar
-        ));
+        ]);
     }
 
     /**
@@ -220,7 +220,7 @@ public function searchBarAction(Request $request)
         }
 
         return new Response(
-            $this->twig->render('@WebProfiler/Profiler/search.html.twig', array(
+            $this->twig->render('@WebProfiler/Profiler/search.html.twig', [
                 'token' => $token,
                 'ip' => $ip,
                 'method' => $method,
@@ -230,9 +230,9 @@ public function searchBarAction(Request $request)
                 'end' => $end,
                 'limit' => $limit,
                 'request' => $request,
-            )),
+            ]),
             200,
-            array('Content-Type' => 'text/html')
+            ['Content-Type' => 'text/html']
         );
     }
 
@@ -268,7 +268,7 @@ public function searchResultsAction(Request $request, $token)
         $end = $request->query->get('end', null);
         $limit = $request->query->get('limit');
 
-        return new Response($this->twig->render('@WebProfiler/Profiler/results.html.twig', array(
+        return new Response($this->twig->render('@WebProfiler/Profiler/results.html.twig', [
             'request' => $request,
             'token' => $token,
             'profile' => $profile,
@@ -281,7 +281,7 @@ public function searchResultsAction(Request $request, $token)
             'end' => $end,
             'limit' => $limit,
             'panel' => null,
-        )), 200, array('Content-Type' => 'text/html'));
+        ]), 200, ['Content-Type' => 'text/html']);
     }
 
     /**
@@ -320,12 +320,12 @@ public function searchAction(Request $request)
         }
 
         if (!empty($token)) {
-            return new RedirectResponse($this->generator->generate('_profiler', array('token' => $token)), 302, array('Content-Type' => 'text/html'));
+            return new RedirectResponse($this->generator->generate('_profiler', ['token' => $token]), 302, ['Content-Type' => 'text/html']);
         }
 
         $tokens = $this->profiler->find($ip, $url, $limit, $method, $start, $end, $statusCode);
 
-        return new RedirectResponse($this->generator->generate('_profiler_search_results', array(
+        return new RedirectResponse($this->generator->generate('_profiler_search_results', [
             'token' => $tokens ? $tokens[0]['token'] : 'empty',
             'ip' => $ip,
             'method' => $method,
@@ -334,7 +334,7 @@ public function searchAction(Request $request)
             'start' => $start,
             'end' => $end,
             'limit' => $limit,
-        )), 302, array('Content-Type' => 'text/html'));
+        ]), 302, ['Content-Type' => 'text/html']);
     }
 
     /**
@@ -360,7 +360,7 @@ public function phpinfoAction()
         phpinfo();
         $phpinfo = ob_get_clean();
 
-        return new Response($phpinfo, 200, array('Content-Type' => 'text/html'));
+        return new Response($phpinfo, 200, ['Content-Type' => 'text/html']);
     }
 
     /**
@@ -389,11 +389,11 @@ public function openAction(Request $request)
             throw new NotFoundHttpException(sprintf('The file "%s" cannot be opened.', $file));
         }
 
-        return new Response($this->twig->render('@WebProfiler/Profiler/open.html.twig', array(
+        return new Response($this->twig->render('@WebProfiler/Profiler/open.html.twig', [
             'filename' => $filename,
             'file' => $file,
             'line' => $line,
-         )), 200, array('Content-Type' => 'text/html'));
+         ]), 200, ['Content-Type' => 'text/html']);
     }
 
     /**
@@ -410,11 +410,11 @@ protected function getTemplateManager()
         return $this->templateManager;
     }
 
-    private function renderWithCspNonces(Request $request, $template, $variables, $code = 200, $headers = array('Content-Type' => 'text/html'))
+    private function renderWithCspNonces(Request $request, $template, $variables, $code = 200, $headers = ['Content-Type' => 'text/html'])
     {
         $response = new Response('', $code, $headers);
 
-        $nonces = $this->cspHandler ? $this->cspHandler->getNonces($request, $response) : array();
+        $nonces = $this->cspHandler ? $this->cspHandler->getNonces($request, $response) : [];
 
         $variables['csp_script_nonce'] = isset($nonces['csp_script_nonce']) ? $nonces['csp_script_nonce'] : null;
         $variables['csp_style_nonce'] = isset($nonces['csp_style_nonce']) ? $nonces['csp_style_nonce'] : null;
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Controller/RouterController.php b/src/Symfony/Bundle/WebProfilerBundle/Controller/RouterController.php
index 1c60340ffd39..bd4c945b1da1 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Controller/RouterController.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Controller/RouterController.php
@@ -60,7 +60,7 @@ public function panelAction($token)
         $this->profiler->disable();
 
         if (null === $this->matcher || null === $this->routes) {
-            return new Response('The Router is not enabled.', 200, array('Content-Type' => 'text/html'));
+            return new Response('The Router is not enabled.', 200, ['Content-Type' => 'text/html']);
         }
 
         $profile = $this->profiler->loadProfile($token);
@@ -68,11 +68,11 @@ public function panelAction($token)
         /** @var RequestDataCollector $request */
         $request = $profile->getCollector('request');
 
-        return new Response($this->twig->render('@WebProfiler/Router/panel.html.twig', array(
+        return new Response($this->twig->render('@WebProfiler/Router/panel.html.twig', [
             'request' => $request,
             'router' => $profile->getCollector('router'),
             'traces' => $this->getTraces($request, $profile->getMethod()),
-        )), 200, array('Content-Type' => 'text/html'));
+        ]), 200, ['Content-Type' => 'text/html']);
     }
 
     /**
@@ -88,9 +88,9 @@ private function getTraces(RequestDataCollector $request, $method)
         $traceRequest = Request::create(
             $request->getPathInfo(),
             $request->getRequestServer(true)->get('REQUEST_METHOD'),
-            array(),
+            [],
             $request->getRequestCookies(true)->all(),
-            array(),
+            [],
             $request->getRequestServer(true)->all()
         );
 
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Csp/ContentSecurityPolicyHandler.php b/src/Symfony/Bundle/WebProfilerBundle/Csp/ContentSecurityPolicyHandler.php
index df4458474b05..a38e7c686fd0 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Csp/ContentSecurityPolicyHandler.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Csp/ContentSecurityPolicyHandler.php
@@ -44,23 +44,23 @@ public function __construct(NonceGenerator $nonceGenerator)
     public function getNonces(Request $request, Response $response)
     {
         if ($request->headers->has('X-SymfonyProfiler-Script-Nonce') && $request->headers->has('X-SymfonyProfiler-Style-Nonce')) {
-            return array(
+            return [
                 'csp_script_nonce' => $request->headers->get('X-SymfonyProfiler-Script-Nonce'),
                 'csp_style_nonce' => $request->headers->get('X-SymfonyProfiler-Style-Nonce'),
-            );
+            ];
         }
 
         if ($response->headers->has('X-SymfonyProfiler-Script-Nonce') && $response->headers->has('X-SymfonyProfiler-Style-Nonce')) {
-            return array(
+            return [
                 'csp_script_nonce' => $response->headers->get('X-SymfonyProfiler-Script-Nonce'),
                 'csp_style_nonce' => $response->headers->get('X-SymfonyProfiler-Style-Nonce'),
-            );
+            ];
         }
 
-        $nonces = array(
+        $nonces = [
             'csp_script_nonce' => $this->generateNonce(),
             'csp_style_nonce' => $this->generateNonce(),
-        );
+        ];
 
         $response->headers->set('X-SymfonyProfiler-Script-Nonce', $nonces['csp_script_nonce']);
         $response->headers->set('X-SymfonyProfiler-Style-Nonce', $nonces['csp_style_nonce']);
@@ -88,7 +88,7 @@ public function updateResponseHeaders(Request $request, Response $response)
         if ($this->cspDisabled) {
             $this->removeCspHeaders($response);
 
-            return array();
+            return [];
         }
 
         $nonces = $this->getNonces($request, $response);
@@ -116,19 +116,19 @@ private function removeCspHeaders(Response $response)
      *
      * @return array
      */
-    private function updateCspHeaders(Response $response, array $nonces = array())
+    private function updateCspHeaders(Response $response, array $nonces = [])
     {
-        $nonces = array_replace(array(
+        $nonces = array_replace([
             'csp_script_nonce' => $this->generateNonce(),
             'csp_style_nonce' => $this->generateNonce(),
-        ), $nonces);
+        ], $nonces);
 
         $ruleIsSet = false;
 
         $headers = $this->getCspHeaders($response);
 
         foreach ($headers as $header => $directives) {
-            foreach (array('script-src' => 'csp_script_nonce', 'style-src' => 'csp_style_nonce') as $type => $tokenName) {
+            foreach (['script-src' => 'csp_script_nonce', 'style-src' => 'csp_style_nonce'] as $type => $tokenName) {
                 if ($this->authorizesInline($directives, $type)) {
                     continue;
                 }
@@ -192,7 +192,7 @@ private function generateCspHeader(array $directives)
      */
     private function parseDirectives($header)
     {
-        $directives = array();
+        $directives = [];
 
         foreach (explode(';', $header) as $directive) {
             $parts = explode(' ', trim($directive));
@@ -236,7 +236,7 @@ private function hasHashOrNonce(array $directives)
             if ('\'nonce-' === substr($directive, 0, 7)) {
                 return true;
             }
-            if (\in_array(substr($directive, 0, 8), array('\'sha256-', '\'sha384-', '\'sha512-'), true)) {
+            if (\in_array(substr($directive, 0, 8), ['\'sha256-', '\'sha384-', '\'sha512-'], true)) {
                 return true;
             }
         }
@@ -252,7 +252,7 @@ private function hasHashOrNonce(array $directives)
      */
     private function getCspHeaders(Response $response)
     {
-        $headers = array();
+        $headers = [];
 
         if ($response->headers->has('Content-Security-Policy')) {
             $headers['Content-Security-Policy'] = $this->parseDirectives($response->headers->get('Content-Security-Policy'));
diff --git a/src/Symfony/Bundle/WebProfilerBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/WebProfilerBundle/DependencyInjection/Configuration.php
index 963c832cf6ca..6c3af8641f70 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/DependencyInjection/Configuration.php
@@ -41,7 +41,7 @@ public function getConfigTreeBuilder()
                     ->defaultValue('bottom')
                     ->setDeprecated('The "web_profiler.position" configuration key has been deprecated in Symfony 3.4 and it will be removed in 4.0.')
                     ->validate()
-                        ->ifNotInArray(array('bottom', 'top'))
+                        ->ifNotInArray(['bottom', 'top'])
                         ->thenInvalid('The CSS position %s is not supported')
                     ->end()
                 ->end()
diff --git a/src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php b/src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php
index e01fb791307f..df8a3666cf8f 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php
@@ -69,7 +69,7 @@ public function onKernelResponse(FilterResponseEvent $event)
             try {
                 $response->headers->set(
                     'X-Debug-Token-Link',
-                    $this->urlGenerator->generate('_profiler', array('token' => $response->headers->get('X-Debug-Token')), UrlGeneratorInterface::ABSOLUTE_URL)
+                    $this->urlGenerator->generate('_profiler', ['token' => $response->headers->get('X-Debug-Token')], UrlGeneratorInterface::ABSOLUTE_URL)
                 );
             } catch (\Exception $e) {
                 $response->headers->set('X-Debug-Error', \get_class($e).': '.preg_replace('/\s+/', ' ', $e->getMessage()));
@@ -80,7 +80,7 @@ public function onKernelResponse(FilterResponseEvent $event)
             return;
         }
 
-        $nonces = $this->cspHandler ? $this->cspHandler->updateResponseHeaders($request, $response) : array();
+        $nonces = $this->cspHandler ? $this->cspHandler->updateResponseHeaders($request, $response) : [];
 
         // do not capture redirects or modify XML HTTP Requests
         if ($request->isXmlHttpRequest()) {
@@ -94,7 +94,7 @@ public function onKernelResponse(FilterResponseEvent $event)
                 $session->getFlashBag()->setAll($session->getFlashBag()->peekAll());
             }
 
-            $response->setContent($this->twig->render('@WebProfiler/Profiler/toolbar_redirect.html.twig', array('location' => $response->headers->get('Location'))));
+            $response->setContent($this->twig->render('@WebProfiler/Profiler/toolbar_redirect.html.twig', ['location' => $response->headers->get('Location')]));
             $response->setStatusCode(200);
             $response->headers->remove('Location');
         }
@@ -123,14 +123,14 @@ protected function injectToolbar(Response $response, Request $request, array $no
         if (false !== $pos) {
             $toolbar = "\n".str_replace("\n", '', $this->twig->render(
                 '@WebProfiler/Profiler/toolbar_js.html.twig',
-                array(
+                [
                     'position' => $this->position,
                     'excluded_ajax_paths' => $this->excludedAjaxPaths,
                     'token' => $response->headers->get('X-Debug-Token'),
                     'request' => $request,
                     'csp_script_nonce' => isset($nonces['csp_script_nonce']) ? $nonces['csp_script_nonce'] : null,
                     'csp_style_nonce' => isset($nonces['csp_style_nonce']) ? $nonces['csp_style_nonce'] : null,
-                )
+                ]
             ))."\n";
             $content = substr($content, 0, $pos).$toolbar.substr($content, $pos);
             $response->setContent($content);
@@ -139,8 +139,8 @@ protected function injectToolbar(Response $response, Request $request, array $no
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::RESPONSE => array('onKernelResponse', -128),
-        );
+        return [
+            KernelEvents::RESPONSE => ['onKernelResponse', -128],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Profiler/TemplateManager.php b/src/Symfony/Bundle/WebProfilerBundle/Profiler/TemplateManager.php
index 2b98fdd59f4c..630de0c8b1af 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Profiler/TemplateManager.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Profiler/TemplateManager.php
@@ -87,7 +87,7 @@ public function getTemplates(Profile $profile)
      */
     public function getNames(Profile $profile)
     {
-        $templates = array();
+        $templates = [];
 
         foreach ($this->templates as $arguments) {
             if (null === $arguments) {
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
index e0f299330f07..a507d36cf08a 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
@@ -32,7 +32,7 @@ public function testEmptyToken($token)
             ->disableOriginalConstructor()
             ->getMock();
 
-        $controller = new ProfilerController($urlGenerator, $profiler, $twig, array());
+        $controller = new ProfilerController($urlGenerator, $profiler, $twig, []);
 
         $response = $controller->toolbarAction(Request::create('/_wdt/empty'), $token);
         $this->assertEquals(200, $response->getStatusCode());
@@ -40,11 +40,11 @@ public function testEmptyToken($token)
 
     public function getEmptyTokenCases()
     {
-        return array(
-            array(null),
+        return [
+            [null],
             // "empty" is also a valid empty token case, see https://github.com/symfony/symfony/issues/10806
-            array('empty'),
-        );
+            ['empty'],
+        ];
     }
 
     /**
@@ -59,10 +59,10 @@ public function testOpeningDisallowedPaths($path, $isAllowed)
             ->disableOriginalConstructor()
             ->getMock();
 
-        $controller = new ProfilerController($urlGenerator, $profiler, $twig, array(), 'bottom', null, __DIR__.'/../..');
+        $controller = new ProfilerController($urlGenerator, $profiler, $twig, [], 'bottom', null, __DIR__.'/../..');
 
         try {
-            $response = $controller->openAction(Request::create('/_wdt/open', Request::METHOD_GET, array('file' => $path)));
+            $response = $controller->openAction(Request::create('/_wdt/open', Request::METHOD_GET, ['file' => $path]));
             $this->assertEquals(200, $response->getStatusCode());
             $this->assertTrue($isAllowed);
         } catch (NotFoundHttpException $e) {
@@ -72,15 +72,15 @@ public function testOpeningDisallowedPaths($path, $isAllowed)
 
     public function getOpenFileCases()
     {
-        return array(
-            array('README.md', true),
-            array('composer.json', true),
-            array('Controller/ProfilerController.php', true),
-            array('.gitignore', false),
-            array('../TwigBundle/README.md', false),
-            array('Controller/../README.md', false),
-            array('Controller/./ProfilerController.php', false),
-        );
+        return [
+            ['README.md', true],
+            ['composer.json', true],
+            ['Controller/ProfilerController.php', true],
+            ['.gitignore', false],
+            ['../TwigBundle/README.md', false],
+            ['Controller/../README.md', false],
+            ['Controller/./ProfilerController.php', false],
+        ];
     }
 
     /**
@@ -126,8 +126,8 @@ public function testSearchResult($withCsp)
 
         $controller = $this->createController($profiler, $twig, $withCsp);
 
-        $tokens = array(
-            array(
+        $tokens = [
+            [
                 'token' => 'token1',
                 'ip' => '127.0.0.1',
                 'method' => 'GET',
@@ -135,8 +135,8 @@ public function testSearchResult($withCsp)
                 'time' => 0,
                 'parent' => null,
                 'status_code' => 200,
-            ),
-            array(
+            ],
+            [
                 'token' => 'token2',
                 'ip' => '127.0.0.1',
                 'method' => 'GET',
@@ -144,23 +144,23 @@ public function testSearchResult($withCsp)
                 'time' => 0,
                 'parent' => null,
                 'status_code' => 404,
-            ),
-        );
+            ],
+        ];
         $profiler
             ->expects($this->once())
             ->method('find')
             ->will($this->returnValue($tokens));
 
-        $request = Request::create('/_profiler/empty/search/results', 'GET', array(
+        $request = Request::create('/_profiler/empty/search/results', 'GET', [
             'limit' => 2,
             'ip' => '127.0.0.1',
             'method' => 'GET',
             'url' => 'http://example.com/',
-        ));
+        ]);
 
         $twig->expects($this->once())
             ->method('render')
-            ->with($this->stringEndsWith('results.html.twig'), $this->equalTo(array(
+            ->with($this->stringEndsWith('results.html.twig'), $this->equalTo([
                 'token' => 'empty',
                 'profile' => null,
                 'tokens' => $tokens,
@@ -173,7 +173,7 @@ public function testSearchResult($withCsp)
                 'limit' => 2,
                 'panel' => null,
                 'request' => $request,
-            )));
+            ]));
 
         $response = $controller->searchResultsAction($request, 'empty');
         $this->assertEquals(200, $response->getStatusCode());
@@ -181,10 +181,10 @@ public function testSearchResult($withCsp)
 
     public function provideCspVariants()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     private function createController($profiler, $twig, $withCSP)
@@ -194,9 +194,9 @@ private function createController($profiler, $twig, $withCSP)
         if ($withCSP) {
             $nonceGenerator = $this->getMockBuilder('Symfony\Bundle\WebProfilerBundle\Csp\NonceGenerator')->getMock();
 
-            return new ProfilerController($urlGenerator, $profiler, $twig, array(), 'bottom', new ContentSecurityPolicyHandler($nonceGenerator));
+            return new ProfilerController($urlGenerator, $profiler, $twig, [], 'bottom', new ContentSecurityPolicyHandler($nonceGenerator));
         }
 
-        return new ProfilerController($urlGenerator, $profiler, $twig, array());
+        return new ProfilerController($urlGenerator, $profiler, $twig, []);
     }
 }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/Csp/ContentSecurityPolicyHandlerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/Csp/ContentSecurityPolicyHandlerTest.php
index 51397783699e..bbf96c3b2b34 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/Csp/ContentSecurityPolicyHandlerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/Csp/ContentSecurityPolicyHandlerTest.php
@@ -55,21 +55,21 @@ public function provideRequestAndResponses()
         $responseScriptNonce = 'response-with-headers-script-nonce';
         $responseStyleNonce = 'response-with-headers-style-nonce';
 
-        $requestNonceHeaders = array(
+        $requestNonceHeaders = [
             'X-SymfonyProfiler-Script-Nonce' => $requestScriptNonce,
             'X-SymfonyProfiler-Style-Nonce' => $requestStyleNonce,
-        );
-        $responseNonceHeaders = array(
+        ];
+        $responseNonceHeaders = [
             'X-SymfonyProfiler-Script-Nonce' => $responseScriptNonce,
             'X-SymfonyProfiler-Style-Nonce' => $responseStyleNonce,
-        );
-
-        return array(
-            array($nonce, array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce), $this->createRequest(), $this->createResponse()),
-            array($nonce, array('csp_script_nonce' => $requestScriptNonce, 'csp_style_nonce' => $requestStyleNonce), $this->createRequest($requestNonceHeaders), $this->createResponse($responseNonceHeaders)),
-            array($nonce, array('csp_script_nonce' => $requestScriptNonce, 'csp_style_nonce' => $requestStyleNonce), $this->createRequest($requestNonceHeaders), $this->createResponse()),
-            array($nonce, array('csp_script_nonce' => $responseScriptNonce, 'csp_style_nonce' => $responseStyleNonce), $this->createRequest(), $this->createResponse($responseNonceHeaders)),
-        );
+        ];
+
+        return [
+            [$nonce, ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce], $this->createRequest(), $this->createResponse()],
+            [$nonce, ['csp_script_nonce' => $requestScriptNonce, 'csp_style_nonce' => $requestStyleNonce], $this->createRequest($requestNonceHeaders), $this->createResponse($responseNonceHeaders)],
+            [$nonce, ['csp_script_nonce' => $requestScriptNonce, 'csp_style_nonce' => $requestStyleNonce], $this->createRequest($requestNonceHeaders), $this->createResponse()],
+            [$nonce, ['csp_script_nonce' => $responseScriptNonce, 'csp_style_nonce' => $responseStyleNonce], $this->createRequest(), $this->createResponse($responseNonceHeaders)],
+        ];
     }
 
     public function provideRequestAndResponsesForOnKernelResponse()
@@ -82,103 +82,103 @@ public function provideRequestAndResponsesForOnKernelResponse()
         $responseScriptNonce = 'response-with-headers-script-nonce';
         $responseStyleNonce = 'response-with-headers-style-nonce';
 
-        $requestNonceHeaders = array(
+        $requestNonceHeaders = [
             'X-SymfonyProfiler-Script-Nonce' => $requestScriptNonce,
             'X-SymfonyProfiler-Style-Nonce' => $requestStyleNonce,
-        );
-        $responseNonceHeaders = array(
+        ];
+        $responseNonceHeaders = [
             'X-SymfonyProfiler-Script-Nonce' => $responseScriptNonce,
             'X-SymfonyProfiler-Style-Nonce' => $responseStyleNonce,
-        );
+        ];
 
-        return array(
-            array(
+        return [
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
                 $this->createResponse(),
-                array('Content-Security-Policy' => null, 'Content-Security-Policy-Report-Only' => null, 'X-Content-Security-Policy' => null),
-            ),
-            array(
-                $nonce, array('csp_script_nonce' => $requestScriptNonce, 'csp_style_nonce' => $requestStyleNonce),
+                ['Content-Security-Policy' => null, 'Content-Security-Policy-Report-Only' => null, 'X-Content-Security-Policy' => null],
+            ],
+            [
+                $nonce, ['csp_script_nonce' => $requestScriptNonce, 'csp_style_nonce' => $requestStyleNonce],
                 $this->createRequest($requestNonceHeaders),
                 $this->createResponse($responseNonceHeaders),
-                array('Content-Security-Policy' => null, 'Content-Security-Policy-Report-Only' => null, 'X-Content-Security-Policy' => null),
-            ),
-            array(
+                ['Content-Security-Policy' => null, 'Content-Security-Policy-Report-Only' => null, 'X-Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $requestScriptNonce, 'csp_style_nonce' => $requestStyleNonce),
+                ['csp_script_nonce' => $requestScriptNonce, 'csp_style_nonce' => $requestStyleNonce],
                 $this->createRequest($requestNonceHeaders),
                 $this->createResponse(),
-                array('Content-Security-Policy' => null, 'Content-Security-Policy-Report-Only' => null, 'X-Content-Security-Policy' => null),
-            ),
-            array(
+                ['Content-Security-Policy' => null, 'Content-Security-Policy-Report-Only' => null, 'X-Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $responseScriptNonce, 'csp_style_nonce' => $responseStyleNonce),
+                ['csp_script_nonce' => $responseScriptNonce, 'csp_style_nonce' => $responseStyleNonce],
                 $this->createRequest(),
                 $this->createResponse($responseNonceHeaders),
-                array('Content-Security-Policy' => null, 'Content-Security-Policy-Report-Only' => null, 'X-Content-Security-Policy' => null),
-            ),
-            array(
+                ['Content-Security-Policy' => null, 'Content-Security-Policy-Report-Only' => null, 'X-Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
-                $this->createResponse(array('Content-Security-Policy' => 'frame-ancestors https: ; form-action: https:', 'Content-Security-Policy-Report-Only' => 'frame-ancestors http: ; form-action: http:')),
-                array('Content-Security-Policy' => 'frame-ancestors https: ; form-action: https:', 'Content-Security-Policy-Report-Only' => 'frame-ancestors http: ; form-action: http:', 'X-Content-Security-Policy' => null),
-            ),
-            array(
+                $this->createResponse(['Content-Security-Policy' => 'frame-ancestors https: ; form-action: https:', 'Content-Security-Policy-Report-Only' => 'frame-ancestors http: ; form-action: http:']),
+                ['Content-Security-Policy' => 'frame-ancestors https: ; form-action: https:', 'Content-Security-Policy-Report-Only' => 'frame-ancestors http: ; form-action: http:', 'X-Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
-                $this->createResponse(array('Content-Security-Policy' => 'default-src \'self\' domain.com; script-src \'self\' \'unsafe-inline\'', 'Content-Security-Policy-Report-Only' => 'default-src \'self\' domain-report-only.com; script-src \'self\' \'unsafe-inline\'')),
-                array('Content-Security-Policy' => 'default-src \'self\' domain.com; script-src \'self\' \'unsafe-inline\'; style-src \'self\' domain.com \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'Content-Security-Policy-Report-Only' => 'default-src \'self\' domain-report-only.com; script-src \'self\' \'unsafe-inline\'; style-src \'self\' domain-report-only.com \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'X-Content-Security-Policy' => null),
-            ),
-            array(
+                $this->createResponse(['Content-Security-Policy' => 'default-src \'self\' domain.com; script-src \'self\' \'unsafe-inline\'', 'Content-Security-Policy-Report-Only' => 'default-src \'self\' domain-report-only.com; script-src \'self\' \'unsafe-inline\'']),
+                ['Content-Security-Policy' => 'default-src \'self\' domain.com; script-src \'self\' \'unsafe-inline\'; style-src \'self\' domain.com \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'Content-Security-Policy-Report-Only' => 'default-src \'self\' domain-report-only.com; script-src \'self\' \'unsafe-inline\'; style-src \'self\' domain-report-only.com \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'X-Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
-                $this->createResponse(array('Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'')),
-                array('Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'', 'X-Content-Security-Policy' => null),
-            ),
-            array(
+                $this->createResponse(['Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'']),
+                ['Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'', 'X-Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
-                $this->createResponse(array('Content-Security-Policy' => 'script-src \'self\'; style-src \'self\'')),
-                array('Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'; style-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'X-Content-Security-Policy' => null),
-            ),
-            array(
+                $this->createResponse(['Content-Security-Policy' => 'script-src \'self\'; style-src \'self\'']),
+                ['Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'; style-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'X-Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
-                $this->createResponse(array('X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'')),
-                array('X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'', 'Content-Security-Policy' => null),
-            ),
-            array(
+                $this->createResponse(['X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'']),
+                ['X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'', 'Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
-                $this->createResponse(array('X-Content-Security-Policy' => 'script-src \'self\'')),
-                array('X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'Content-Security-Policy' => null),
-            ),
-            array(
+                $this->createResponse(['X-Content-Security-Policy' => 'script-src \'self\'']),
+                ['X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
-                $this->createResponse(array('X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'sha384-LALALALALAAL\'')),
-                array('X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'sha384-LALALALALAAL\' \'nonce-'.$nonce.'\'', 'Content-Security-Policy' => null),
-            ),
-            array(
+                $this->createResponse(['X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'sha384-LALALALALAAL\'']),
+                ['X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'sha384-LALALALALAAL\' \'nonce-'.$nonce.'\'', 'Content-Security-Policy' => null],
+            ],
+            [
                 $nonce,
-                array('csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce),
+                ['csp_script_nonce' => $nonce, 'csp_style_nonce' => $nonce],
                 $this->createRequest(),
-                $this->createResponse(array('Content-Security-Policy' => 'script-src \'self\'; style-src \'self\'', 'X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'; style-src \'self\'')),
-                array('Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'; style-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'; style-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\''),
-            ),
-        );
+                $this->createResponse(['Content-Security-Policy' => 'script-src \'self\'; style-src \'self\'', 'X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'; style-src \'self\'']),
+                ['Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'; style-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\'', 'X-Content-Security-Policy' => 'script-src \'self\' \'unsafe-inline\'; style-src \'self\' \'unsafe-inline\' \'nonce-'.$nonce.'\''],
+            ],
+        ];
     }
 
-    private function createRequest(array $headers = array())
+    private function createRequest(array $headers = [])
     {
         $request = new Request();
         $request->headers->add($headers);
@@ -186,7 +186,7 @@ private function createRequest(array $headers = array())
         return $request;
     }
 
-    private function createResponse(array $headers = array())
+    private function createResponse(array $headers = [])
     {
         $response = new Response();
         $response->headers->add($headers);
diff --
10000
git a/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/ConfigurationTest.php
index 8028c2cd4bd1..232f864cc526 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -24,7 +24,7 @@ public function testConfigTree($options, $results)
     {
         $processor = new Processor();
         $configuration = new Configuration();
-        $config = $processor->processConfiguration($configuration, array($options));
+        $config = $processor->processConfiguration($configuration, [$options]);
 
         $this->assertEquals($results, $config);
     }
@@ -38,27 +38,27 @@ public function testPositionConfig($options, $results)
     {
         $processor = new Processor();
         $configuration = new Configuration();
-        $config = $processor->processConfiguration($configuration, array($options));
+        $config = $processor->processConfiguration($configuration, [$options]);
 
         $this->assertEquals($results, $config);
     }
 
     public function getDebugModes()
     {
-        return array(
-            array(array(), array('intercept_redirects' => false, 'toolbar' => false, 'position' => 'bottom', 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt')),
-            array(array('intercept_redirects' => true), array('intercept_redirects' => true, 'toolbar' => false, 'position' => 'bottom', 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt')),
-            array(array('intercept_redirects' => false), array('intercept_redirects' => false, 'toolbar' => false, 'position' => 'bottom', 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt')),
-            array(array('toolbar' => true), array('intercept_redirects' => false, 'toolbar' => true, 'position' => 'bottom', 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt')),
-            array(array('excluded_ajax_paths' => 'test'), array('intercept_redirects' => false, 'toolbar' => false, 'position' => 'bottom', 'excluded_ajax_paths' => 'test')),
-        );
+        return [
+            [[], ['intercept_redirects' => false, 'toolbar' => false, 'position' => 'bottom', 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt']],
+            [['intercept_redirects' => true], ['intercept_redirects' => true, 'toolbar' => false, 'position' => 'bottom', 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt']],
+            [['intercept_redirects' => false], ['intercept_redirects' => false, 'toolbar' => false, 'position' => 'bottom', 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt']],
+            [['toolbar' => true], ['intercept_redirects' => false, 'toolbar' => true, 'position' => 'bottom', 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt']],
+            [['excluded_ajax_paths' => 'test'], ['intercept_redirects' => false, 'toolbar' => false, 'position' => 'bottom', 'excluded_ajax_paths' => 'test']],
+        ];
     }
 
     public function getPositionConfig()
     {
-        return array(
-            array(array('position' => 'top'), array('intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt', 'position' => 'top')),
-            array(array('position' => 'bottom'), array('intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt', 'position' => 'bottom')),
-        );
+        return [
+            [['position' => 'top'], ['intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt', 'position' => 'top']],
+            [['position' => 'bottom'], ['intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt', 'position' => 'bottom']],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/WebProfilerExtensionTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/WebProfilerExtensionTest.php
index e00f98b16341..7ec5f7dc2d55 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/WebProfilerExtensionTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/WebProfilerExtensionTest.php
@@ -28,9 +28,9 @@ class WebProfilerExtensionTest extends TestCase
      */
     private $container;
 
-    public static function assertSaneContainer(Container $container, $message = '', $knownPrivates = array())
+    public static function assertSaneContainer(Container $container, $message = '', $knownPrivates = [])
     {
-        $errors = array();
+        $errors = [];
         $knownPrivates[] = 'debug.file_link_formatter.url_format';
         foreach ($container->getServiceIds() as $id) {
             if (\in_array($id, $knownPrivates, true)) { // to be removed in 4.0
@@ -43,7 +43,7 @@ public static function assertSaneContainer(Container $container, $message = '',
             }
         }
 
-        self::assertEquals(array(), $errors, $message);
+        self::assertEquals([], $errors, $message);
     }
 
     protected function setUp()
@@ -56,19 +56,19 @@ protected function setUp()
         $this->container->register('event_dispatcher', EventDispatcher::class)->setPublic(true);
         $this->container->register('router', $this->getMockClass('Symfony\\Component\\Routing\\RouterInterface'))->setPublic(true);
         $this->container->register('twig', 'Twig\Environment')->setPublic(true);
-        $this->container->register('twig_loader', 'Twig\Loader\ArrayLoader')->addArgument(array())->setPublic(true);
+        $this->container->register('twig_loader', 'Twig\Loader\ArrayLoader')->addArgument([])->setPublic(true);
         $this->container->register('twig', 'Twig\Environment')->addArgument(new Reference('twig_loader'))->setPublic(true);
-        $this->container->setParameter('kernel.bundles', array());
+        $this->container->setParameter('kernel.bundles', []);
         $this->container->setParameter('kernel.cache_dir', __DIR__);
         $this->container->setParameter('kernel.debug', false);
         $this->container->setParameter('kernel.project_dir', __DIR__);
         $this->container->setParameter('kernel.charset', 'UTF-8');
         $this->container->setParameter('debug.file_link_format', null);
-        $this->container->setParameter('profiler.class', array('Symfony\\Component\\HttpKernel\\Profiler\\Profiler'));
+        $this->container->setParameter('profiler.class', ['Symfony\\Component\\HttpKernel\\Profiler\\Profiler']);
         $this->container->register('profiler', $this->getMockClass('Symfony\\Component\\HttpKernel\\Profiler\\Profiler'))
             ->setPublic(true)
             ->addArgument(new Definition($this->getMockClass('Symfony\\Component\\HttpKernel\\Profiler\\ProfilerStorageInterface')));
-        $this->container->setParameter('data_collector.templates', array());
+        $this->container->setParameter('data_collector.templates', []);
         $this->container->set('kernel', $this->kernel);
         $this->container->addCompilerPass(new RegisterListenersPass());
     }
@@ -89,7 +89,7 @@ public function testDefaultConfig($debug)
         $this->container->setParameter('kernel.debug', $debug);
 
         $extension = new WebProfilerExtension();
-        $extension->load(array(array()), $this->container);
+        $extension->load([[]], $this->container);
 
         $this->assertFalse($this->container->has('web_profiler.debug_toolbar'));
 
@@ -102,11 +102,11 @@ public function testDefaultConfig($debug)
     public function testToolbarConfig($toolbarEnabled, $interceptRedirects, $listenerInjected, $listenerEnabled)
     {
         $extension = new WebProfilerExtension();
-        $extension->load(array(array('toolbar' => $toolbarEnabled, 'intercept_redirects' => $interceptRedirects)), $this->container);
+        $extension->load([['toolbar' => $toolbarEnabled, 'intercept_redirects' => $interceptRedirects]], $this->container);
 
         $this->assertSame($listenerInjected, $this->container->has('web_profiler.debug_toolbar'));
 
-        $this->assertSaneContainer($this->getCompiledContainer(), '', array('web_profiler.csp.handler'));
+        $this->assertSaneContainer($this->getCompiledContainer(), '', ['web_profiler.csp.handler']);
 
         if ($listenerInjected) {
             $this->assertSame($listenerEnabled, $this->container->get('web_profiler.debug_toolbar')->isEnabled());
@@ -115,12 +115,12 @@ public function testToolbarConfig($toolbarEnabled, $interceptRedirects, $listene
 
     public function getDebugModes()
     {
-        return array(
-            array(false, false, false, false),
-            array(true,  false, true,  true),
-            array(false, true,  true,  false),
-            array(true,  true,  true,  true),
-        );
+        return [
+            [false, false, false, false],
+            [true,  false, true,  true],
+            [false, true,  true,  false],
+            [true,  true,  true,  true],
+        ];
     }
 
     private function getCompiledContainer()
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/EventListener/WebDebugToolbarListenerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/EventListener/WebDebugToolbarListenerTest.php
index 9917ff211d70..a6ed9e8d7adc 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/EventListener/WebDebugToolbarListenerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/EventListener/WebDebugToolbarListenerTest.php
@@ -33,15 +33,15 @@ public function testInjectToolbar($content, $expected)
 
         $response = new Response($content);
 
-        $m->invoke($listener, $response, Request::create('/'), array('csp_script_nonce' => 'scripto', 'csp_style_nonce' => 'stylo'));
+        $m->invoke($listener, $response, Request::create('/'), ['csp_script_nonce' => 'scripto', 'csp_style_nonce' => 'stylo']);
         $this->assertEquals($expected, $response->getContent());
     }
 
     public function getInjectToolbarTests()
     {
-        return array(
-            array('<html><head></head><body></body></html>', "<html><head></head><body>\nWDT\n</body></html>"),
-            array('<html>
+        return [
+            ['<html><head></head><body></body></html>', "<html><head></head><body>\nWDT\n</body></html>"],
+            ['<html>
             <head></head>
             <body>
             <textarea><html><head></head><body></body></html></textarea>
@@ -51,8 +51,8 @@ public function getInjectToolbarTests()
             <body>
             <textarea><html><head></head><body></body></html></textarea>
             \nWDT\n</body>
-            </html>"),
-        );
+            </html>"],
+        ];
     }
 
     /**
@@ -134,12 +134,12 @@ public function testToolbarIsNotInjectedOnRedirection($statusCode, $hasSession)
 
     public function provideRedirects()
     {
-        return array(
-            array(301, true),
-            array(302, true),
-            array(301, false),
-            array(302, false),
-        );
+        return [
+            [301, true],
+            [302, true],
+            [301, false],
+            [302, false],
+        ];
     }
 
     /**
@@ -230,7 +230,7 @@ public function testXDebugUrlHeader()
         $urlGenerator
             ->expects($this->once())
             ->method('generate')
-            ->with('_profiler', array('token' => 'xxxxxxxx'), UrlGeneratorInterface::ABSOLUTE_URL)
+            ->with('_profiler', ['token' => 'xxxxxxxx'], UrlGeneratorInterface::ABSOLUTE_URL)
             ->will($this->returnValue('http://mydomain.com/_profiler/xxxxxxxx'))
         ;
 
@@ -251,7 +251,7 @@ public function testThrowingUrlGenerator()
         $urlGenerator
             ->expects($this->once())
             ->method('generate')
-            ->with('_profiler', array('token' => 'xxxxxxxx'))
+            ->with('_profiler', ['token' => 'xxxxxxxx'])
             ->willThrowException(new \Exception('foo'))
         ;
 
@@ -272,7 +272,7 @@ public function testThrowingErrorCleanup()
         $urlGenerator
             ->expects($this->once())
             ->method('generate')
-            ->with('_profiler', array('token' => 'xxxxxxxx'))
+            ->with('_profiler', ['token' => 'xxxxxxxx'])
             ->willThrowException(new \Exception("This\nmultiline\r\ntabbed text should\tcome out\r on\n \ta single plain\r\nline"))
         ;
 
@@ -286,7 +286,7 @@ public function testThrowingErrorCleanup()
 
     protected function getRequestMock($isXmlHttpRequest = false, $requestFormat = 'html', $hasSession = true)
     {
-        $request = $this->getMockBuilder('Symfony\Component\HttpFoundation\Request')->setMethods(array('getSession', 'isXmlHttpRequest', 'getRequestFormat'))->disableOriginalConstructor()->getMock();
+        $request = $this->getMockBuilder('Symfony\Component\HttpFoundation\Request')->setMethods(['getSession', 'isXmlHttpRequest', 'getRequestFormat'])->disableOriginalConstructor()->getMock();
         $request->expects($this->any())
             ->method('isXmlHttpRequest')
             ->will($this->returnValue($isXmlHttpRequest));
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
index a65a389923d7..7d797ec84f9d 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
@@ -43,11 +43,11 @@ protected function setUp()
 
         $profiler = $this->mockProfiler();
         $twigEnvironment = $this->mockTwigEnvironment();
-        $templates = array(
-            'data_collector.foo' => array('foo', 'FooBundle:Collector:foo'),
-            'data_collector.bar' => array('bar', 'FooBundle:Collector:bar'),
-            'data_collector.baz' => array('baz', 'FooBundle:Collector:baz'),
-        );
+        $templates = [
+            'data_collector.foo' => ['foo', 'FooBundle:Collector:foo'],
+            'data_collector.bar' => ['bar', 'FooBundle:Collector:bar'],
+            'data_collector.baz' => ['baz', 'FooBundle:Collector:baz'],
+        ];
 
         $this->templateManager = new TemplateManager($profiler, $twigEnvironment, $templates);
     }
@@ -69,12 +69,12 @@ public function testGetNameValidTemplate()
         $this->profiler->expects($this->any())
             ->method('has')
             ->withAnyParameters()
-            ->will($this->returnCallback(array($this, 'profilerHasCallback')));
+            ->will($this->returnCallback([$this, 'profilerHasCallback']));
 
         $profile = $this->mockProfile();
         $profile->expects($this->any())
             ->method('hasCollector')
-            ->will($this->returnCallback(array($this, 'profileHasCollectorCallback')));
+            ->will($this->returnCallback([$this, 'profileHasCollectorCallback']));
 
         $this->assertEquals('FooBundle:Collector:foo.html.twig', $this->templateManager->getName($profile, 'foo'));
     }
@@ -88,12 +88,12 @@ public function testGetTemplates()
         $profile = $this->mockProfile();
         $profile->expects($this->any())
             ->method('hasCollector')
-            ->will($this->returnCallback(array($this, 'profilerHasCallback')));
+            ->will($this->returnCallback([$this, 'profilerHasCallback']));
 
         $this->profiler->expects($this->any())
             ->method('has')
             ->withAnyParameters()
-            ->will($this->returnCallback(array($this, 'profileHasCollectorCallback')));
+            ->will($this->returnCallback([$this, 'profileHasCollectorCallback']));
 
         $result = $this->templateManager->getTemplates($profile);
         $this->assertArrayHasKey('foo', $result);
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php b/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
index 61d0781542a5..0d0acde36021 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
@@ -73,18 +73,18 @@ public function getFunctions()
             return $value instanceof Data ? $this->dumpData($env, $value, $maxDepth) : twig_escape_filter($env, $this->dumpValue($value));
         };
 
-        return array(
-            new TwigFunction('profiler_dump', $profilerDump, array('is_safe' => array('html'), 'needs_environment' => true)),
-            new TwigFunction('profiler_dump_log', array($this, 'dumpLog'), array('is_safe' => array('html'), 'needs_environment' => true)),
-        );
+        return [
+            new TwigFunction('profiler_dump', $profilerDump, ['is_safe' => ['html'], 'needs_environment' => true]),
+            new TwigFunction('profiler_dump_log', [$this, 'dumpLog'], ['is_safe' => ['html'], 'needs_environment' => true]),
+        ];
     }
 
     public function dumpData(Environment $env, Data $data, $maxDepth = 0)
     {
         $this->dumper->setCharset($env->getCharset());
-        $this->dumper->dump($data, null, array(
+        $this->dumper->dump($data, null, [
             'maxDepth' => $maxDepth,
-        ));
+        ]);
 
         $dump = stream_get_contents($this->output, -1, 0);
         rewind($this->output);
@@ -102,7 +102,7 @@ public function dumpLog(Environment $env, $message, Data $context = null)
             return '<span class="dump-inline">'.$message.'</span>';
         }
 
-        $replacements = array();
+        $replacements = [];
         foreach ($context as $k => $v) {
             $k = '{'.twig_escape_filter($env, $k).'}';
             $replacements['&quot;<b>'.$k.'</b>&quot;'] = $replacements['&quot;'.$k.'&quot;'] = $replacements[$k] = $this->dumpData($env, $v);
diff --git a/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php b/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php
index a9c62c99c61d..73c51cc8e09e 100644
--- a/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php
+++ b/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php
@@ -27,7 +27,7 @@
  */
 class ServerLogCommand extends Command
 {
-    private static $bgColor = array('black', 'blue', 'cyan', 'green', 'magenta', 'red', 'white', 'yellow');
+    private static $bgColor = ['black', 'blue', 'cyan', 'green', 'magenta', 'red', 'white', 'yellow'];
 
     private $el;
     private $handler;
@@ -87,12 +87,12 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $this->handler = new ConsoleHandler($output);
 
-        $this->handler->setFormatter(new ConsoleFormatter(array(
+        $this->handler->setFormatter(new ConsoleFormatter([
             'format' => str_replace('\n', "\n", $input->getOption('format')),
             'date_format' => $input->getOption('date-format'),
             'colors' => $output->isDecorated(),
             'multiline' => OutputInterface::VERBOSITY_DEBUG <= $output->getVerbosity(),
-        )));
+        ]));
 
         if (false === strpos($host = $input->getOption('host'), '://')) {
             $host = 'tcp://'.$host;
@@ -120,8 +120,8 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
     private function getLogs($socket)
     {
-        $sockets = array((int) $socket => $socket);
-        $write = array();
+        $sockets = [(int) $socket => $socket];
+        $write = [];
 
         while (true) {
             $read = $sockets;
diff --git a/src/Symfony/Bundle/WebServerBundle/Command/ServerRunCommand.php b/src/Symfony/Bundle/WebServerBundle/Command/ServerRunCommand.php
index 634ef2c28aa4..c5b097332042 100644
--- a/src/Symfony/Bundle/WebServerBundle/Command/ServerRunCommand.php
+++ b/src/Symfony/Bundle/WebServerBundle/Command/ServerRunCommand.php
@@ -47,11 +47,11 @@ public function __construct($documentRoot = null, $environment = null)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('addressport', InputArgument::OPTIONAL, 'The address to listen to (can be address:port, address, or port)'),
                 new InputOption('docroot', 'd', InputOption::VALUE_REQUIRED, 'Document root, usually where your front controllers are stored'),
                 new InputOption('router', 'r', InputOption::VALUE_REQUIRED, 'Path to custom router script'),
-            ))
+            ])
             ->setDescription('Runs a local web server')
             ->setHelp(<<<'EOF'
 <info>%command.name%</info> runs a local web server: By default, the server
diff --git a/src/Symfony/Bundle/WebServerBundle/Command/ServerStartCommand.php b/src/Symfony/Bundle/WebServerBundle/Command/ServerStartCommand.php
index 591a7e8fbb10..22447c66d9d2 100644
--- a/src/Symfony/Bundle/WebServerBundle/Command/ServerStartCommand.php
+++ b/src/Symfony/Bundle/WebServerBundle/Command/ServerStartCommand.php
@@ -47,12 +47,12 @@ public function __construct($documentRoot = null, $environment = null)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('addressport', InputArgument::OPTIONAL, 'The address to listen to (can be address:port, address, or port)'),
                 new InputOption('docroot', 'd', InputOption::VALUE_REQUIRED, 'Document root'),
                 new InputOption('router', 'r', InputOption::VALUE_REQUIRED, 'Path to custom router script'),
                 new InputOption('pidfile', null, InputOption::VALUE_REQUIRED, 'PID file'),
-            ))
+            ])
             ->setDescription('Starts a local web server in the background')
             ->setHelp(<<<'EOF'
 <info>%command.name%</info> runs a local web server: By default, the server
@@ -90,10 +90,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $io = new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output);
 
         if (!\extension_loaded('pcntl')) {
-            $io->error(array(
+            $io->error([
                 'This command needs the pcntl extension to run.',
                 'You can either install it or use the "server:run" command instead.',
-            ));
+            ]);
 
             if ($io->confirm('Do you want to execute <info>server:run</info> immediately?', false)) {
                 return $this->getApplication()->find('server:run')->run($input, $output);
diff --git a/src/Symfony/Bundle/WebServerBundle/Command/ServerStatusCommand.php b/src/Symfony/Bundle/WebServerBundle/Command/ServerStatusCommand.php
index 907f69f1c43a..36d6d290e643 100644
--- a/src/Symfony/Bundle/WebServerBundle/Command/ServerStatusCommand.php
+++ b/src/Symfony/Bundle/WebServerBundle/Command/ServerStatusCommand.php
@@ -35,10 +35,10 @@ class ServerStatusCommand extends ServerCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputOption('pidfile', null, InputOption::VALUE_REQUIRED, 'PID file'),
                 new InputOption('filter', null, InputOption::VALUE_REQUIRED, 'The value to display (one of port, host, or address)'),
-            ))
+            ])
             ->setDescription('Outputs the status of the local web server')
             ->setHelp(<<<'EOF'
 <info>%command.name%</info> shows the details of the given local web
diff --git a/src/Symfony/Bundle/WebServerBundle/Command/ServerStopCommand.php b/src/Symfony/Bundle/WebServerBundle/Command/ServerStopCommand.php
index 5f9189d3e62e..c4edd3700326 100644
--- a/src/Symfony/Bundle/WebServerBundle/Command/ServerStopCommand.php
+++ b/src/Symfony/Bundle/WebServerBundle/Command/ServerStopCommand.php
@@ -33,9 +33,9 @@ class ServerStopCommand extends ServerCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputOption('pidfile', null, InputOption::VALUE_REQUIRED, 'PID file'),
-            ))
+            ])
             ->setDescription('Stops the local web server that was started with the server:start command')
             ->setHelp(<<<'EOF'
 <info>%command.name%</info> stops the local web server:
diff --git a/src/Symfony/Bundle/WebServerBundle/Tests/DependencyInjection/WebServerExtensionTest.php b/src/Symfony/Bundle/WebServerBundle/Tests/DependencyInjection/WebServerExtensionTest.php
index 0d9c2f4bd58e..f52f0d2c585a 100644
--- a/src/Symfony/Bundle/WebServerBundle/Tests/DependencyInjection/WebServerExtensionTest.php
+++ b/src/Symfony/Bundle/WebServerBundle/Tests/DependencyInjection/WebServerExtensionTest.php
@@ -22,7 +22,7 @@ public function testLoad()
     {
         $container = new ContainerBuilder();
         $container->setParameter('kernel.project_dir', __DIR__);
-        (new WebServerExtension())->load(array(), $container);
+        (new WebServerExtension())->load([], $container);
 
         $this->assertSame(
             __DIR__.'/test',
diff --git a/src/Symfony/Bundle/WebServerBundle/WebServer.php b/src/Symfony/Bundle/WebServerBundle/WebServer.php
index f727b3ed4e71..3f28c7326368 100644
--- a/src/Symfony/Bundle/WebServerBundle/WebServer.php
+++ b/src/Symfony/Bundle/WebServerBundle/WebServer.php
@@ -150,12 +150,12 @@ private function createServerProcess(WebServerConfig $config)
             throw new \RuntimeException('Unable to find the PHP binary.');
         }
 
-        $process = new Process(array_merge(array($binary), $finder->findArguments(), array('-dvariables_order=EGPCS', '-S', $config->getAddress(), $config->getRouter())));
+        $process = new Process(array_merge([$binary], $finder->findArguments(), ['-dvariables_order=EGPCS', '-S', $config->getAddress(), $config->getRouter()]));
         $process->setWorkingDirectory($config->getDocumentRoot());
         $process->setTimeout(null);
 
         if (\in_array('APP_ENV', explode(',', getenv('SYMFONY_DOTENV_VARS')))) {
-            $process->setEnv(array('APP_ENV' => false));
+            $process->setEnv(['APP_ENV' => false]);
             $process->inheritEnvironmentVariables();
         }
 
diff --git a/src/Symfony/Bundle/WebServerBundle/WebServerConfig.php b/src/Symfony/Bundle/WebServerBundle/WebServerConfig.php
index 8b88eaecad65..059ea3beb559 100644
--- a/src/Symfony/Bundle/WebServerBundle/WebServerConfig.php
+++ b/src/Symfony/Bundle/WebServerBundle/WebServerConfig.php
@@ -114,7 +114,7 @@ private function findFrontController($documentRoot, $env)
 
     private function getFrontControllerFileNames($env)
     {
-        return array('app_'.$env.'.php', 'app.php', 'index_'.$env.'.php', 'index.php');
+        return ['app_'.$env.'.php', 'app.php', 'index_'.$env.'.php', 'index.php'];
     }
 
     private function findBestPort()
diff --git a/src/Symfony/Component/Asset/Packages.php b/src/Symfony/Component/Asset/Packages.php
index 63808d90786c..3e82dcdcd407 100644
--- a/src/Symfony/Component/Asset/Packages.php
+++ b/src/Symfony/Component/Asset/Packages.php
@@ -23,13 +23,13 @@
 class Packages
 {
     private $defaultPackage;
-    private $packages = array();
+    private $packages = [];
 
     /**
      * @param PackageInterface   $defaultPackage The default package
      * @param PackageInterface[] $packages       Additional packages indexed by name
      */
-    public function __construct(PackageInterface $defaultPackage = null, array $packages = array())
+    public function __construct(PackageInterface $defaultPackage = null, array $packages = [])
     {
         $this->defaultPackage = $defaultPackage;
 
diff --git a/src/Symfony/Component/Asset/Tests/PackageTest.php b/src/Symfony/Component/Asset/Tests/PackageTest.php
index a5da219b59b5..8f6626ae4d2a 100644
--- a/src/Symfony/Component/Asset/Tests/PackageTest.php
+++ b/src/Symfony/Component/Asset/Tests/PackageTest.php
@@ -29,22 +29,22 @@ public function testGetUrl($version, $format, $path, $expected)
 
     public function getConfigs()
     {
-        return array(
-            array('v1', '', 'http://example.com/foo', 'http://example.com/foo'),
-            array('v1', '', 'https://example.com/foo', 'https://example.com/foo'),
-            array('v1', '', '//example.com/foo', '//example.com/foo'),
-
-            array('v1', '', '/foo', '/foo?v1'),
-            array('v1', '', 'foo', 'foo?v1'),
-
-            array(null, '', '/foo', '/foo'),
-            array(null, '', 'foo', 'foo'),
-
-            array('v1', 'version-%2$s/%1$s', '/foo', '/version-v1/foo'),
-            array('v1', 'version-%2$s/%1$s', 'foo', 'version-v1/foo'),
-            array('v1', 'version-%2$s/%1$s', 'foo/', 'version-v1/foo/'),
-            array('v1', 'version-%2$s/%1$s', '/foo/', '/version-v1/foo/'),
-        );
+        return [
+            ['v1', '', 'http://example.com/foo', 'http://example.com/foo'],
+            ['v1', '', 'https://example.com/foo', 'https://example.com/foo'],
+            ['v1', '', '//example.com/foo', '//example.com/foo'],
+
+            ['v1', '', '/foo', '/foo?v1'],
+            ['v1', '', 'foo', 'foo?v1'],
+
+            [null, '', '/foo', '/foo'],
+            [null, '', 'foo', 'foo'],
+
+            ['v1', 'version-%2$s/%1$s', '/foo', '/version-v1/foo'],
+            ['v1', 'version-%2$s/%1$s', 'foo', 'version-v1/foo'],
+            ['v1', 'version-%2$s/%1$s', 'foo/', 'version-v1/foo/'],
+            ['v1', 'version-%2$s/%1$s', '/foo/', '/version-v1/foo/'],
+        ];
     }
 
     public function testGetVersion()
diff --git a/src/Symfony/Component/Asset/Tests/PackagesTest.php b/src/Symfony/Component/Asset/Tests/PackagesTest.php
index 4b0872f7f269..b751986d48dd 100644
--- a/src/Symfony/Component/Asset/Tests/PackagesTest.php
+++ b/src/Symfony/Component/Asset/Tests/PackagesTest.php
@@ -27,7 +27,7 @@ public function testGetterSetters()
         $this->assertEquals($default, $packages->getPackage());
         $this->assertEquals($a, $packages->getPackage('a'));
 
-        $packages = new Packages($default, array('a' => $a));
+        $packages = new Packages($default, ['a' => $a]);
 
         $this->assertEquals($default, $packages->getPackage());
         $this->assertEquals($a, $packages->getPackage('a'));
@@ -37,7 +37,7 @@ public function testGetVersion()
     {
         $packages = new Packages(
             new Package(new StaticVersionStrategy('default')),
-            array('a' => new Package(new StaticVersionStrategy('a')))
+            ['a' => new Package(new StaticVersionStrategy('a'))]
         );
 
         $this->assertEquals('default', $packages->getVersion('/foo'));
@@ -48,7 +48,7 @@ public function testGetUrl()
     {
         $packages = new Packages(
             new Package(new StaticVersionStrategy('default')),
-            array('a' => new Package(new StaticVersionStrategy('a')))
+            ['a' => new Package(new StaticVersionStrategy('a'))]
         );
 
         $this->assertEquals('/foo?default', $packages->getUrl('/foo'));
diff --git a/src/Symfony/Component/Asset/Tests/PathPackageTest.php b/src/Symfony/Component/Asset/Tests/PathPackageTest.php
index 4a9f90df90a1..c6edc8de61a7 100644
--- a/src/Symfony/Component/Asset/Tests/PathPackageTest.php
+++ b/src/Symfony/Component/Asset/Tests/PathPackageTest.php
@@ -28,24 +28,24 @@ public function testGetUrl($basePath, $format, $path, $expected)
 
     public function getConfigs()
     {
-        return array(
-            array('/foo', '', 'http://example.com/foo', 'http://example.com/foo'),
-            array('/foo', '', 'https://example.com/foo', 'https://example.com/foo'),
-            array('/foo', '', '//example.com/foo', '//example.com/foo'),
-
-            array('', '', '/foo', '/foo?v1'),
-
-            array('/foo', '', '/bar', '/bar?v1'),
-            array('/foo', '', 'bar', '/foo/bar?v1'),
-            array('foo', '', 'bar', '/foo/bar?v1'),
-            array('foo/', '', 'bar', '/foo/bar?v1'),
-            array('/foo/', '', 'bar', '/foo/bar?v1'),
-
-            array('/foo', 'version-%2$s/%1$s', '/bar', '/version-v1/bar'),
-            array('/foo', 'version-%2$s/%1$s', 'bar', '/foo/version-v1/bar'),
-            array('/foo', 'version-%2$s/%1$s', 'bar/', '/foo/version-v1/bar/'),
-            array('/foo', 'version-%2$s/%1$s', '/bar/', '/version-v1/bar/'),
-        );
+        return [
+            ['/foo', '', 'http://example.com/foo', 'http://example.com/foo'],
+            ['/foo', '', 'https://example.com/foo', 'https://example.com/foo'],
+            ['/foo', '', '//example.com/foo', '//example.com/foo'],
+
+            ['', '', '/foo', '/foo?v1'],
+
+            ['/foo', '', '/bar', '/bar?v1'],
+            ['/foo', '', 'bar', '/foo/bar?v1'],
+            ['foo', '', 'bar', '/foo/bar?v1'],
+            ['foo/', '', 'bar', '/foo/bar?v1'],
+            ['/foo/', '', 'bar', '/foo/bar?v1'],
+
+            ['/foo', 'version-%2$s/%1$s', '/bar', '/version-v1/bar'],
+            ['/foo', 'version-%2$s/%1$s', 'bar', '/foo/version-v1/bar'],
+            ['/foo', 'version-%2$s/%1$s', 'bar/', '/foo/version-v1/bar/'],
+            ['/foo', 'version-%2$s/%1$s', '/bar/', '/version-v1/bar/'],
+        ];
     }
 
     /**
@@ -60,19 +60,19 @@ public function testGetUrlWithContext($basePathRequest, $basePath, $format, $pat
 
     public function getContextConfigs()
     {
-        return array(
-            array('', '/foo', '', '/baz', '/baz?v1'),
-            array('', '/foo', '', 'baz', '/foo/baz?v1'),
-            array('', 'foo', '', 'baz', '/foo/baz?v1'),
-            array('', 'foo/', '', 'baz', '/foo/baz?v1'),
-            array('', '/foo/', '', 'baz', '/foo/baz?v1'),
-
-            array('/bar', '/foo', '', '/baz', '/baz?v1'),
-            array('/bar', '/foo', '', 'baz', '/bar/foo/baz?v1'),
-            array('/bar', 'foo', '', 'baz', '/bar/foo/baz?v1'),
-            array('/bar', 'foo/', '', 'baz', '/bar/foo/baz?v1'),
-            array('/bar', '/foo/', '', 'baz', '/bar/foo/baz?v1'),
-        );
+        return [
+            ['', '/foo', '', '/baz', '/baz?v1'],
+            ['', '/foo', '', 'baz', '/foo/baz?v1'],
+            ['', 'foo', '', 'baz', '/foo/baz?v1'],
+            ['', 'foo/', '', 'baz', '/foo/baz?v1'],
+            ['', '/foo/', '', 'baz', '/foo/baz?v1'],
+
+            ['/bar', '/foo', '', '/baz', '/baz?v1'],
+            ['/bar', '/foo', '', 'baz', '/bar/foo/baz?v1'],
+            ['/bar', 'foo', '', 'baz', '/bar/foo/baz?v1'],
+            ['/bar', 'foo/', '', 'baz', '/bar/foo/baz?v1'],
+            ['/bar', '/foo/', '', 'baz', '/bar/foo/baz?v1'],
+        ];
     }
 
     public function testVersionStrategyGivesAbsoluteURL()
diff --git a/src/Symfony/Component/Asset/Tests/UrlPackageTest.php b/src/Symfony/Component/Asset/Tests/UrlPackageTest.php
index d37ba0126c5a..9b71d45bf31d 100644
--- a/src/Symfony/Component/Asset/Tests/UrlPackageTest.php
+++ b/src/Symfony/Component/Asset/Tests/UrlPackageTest.php
@@ -29,26 +29,26 @@ public function testGetUrl($baseUrls, $format, $path, $expected)
 
     public function getConfigs()
     {
-        return array(
-            array('http://example.net', '', 'http://example.com/foo', 'http://example.com/foo'),
-            array('http://example.net', '', 'https://example.com/foo', 'https://example.com/foo'),
-            array('http://example.net', '', '//example.com/foo', '//example.com/foo'),
-
-            array('http://example.com', '', '/foo', 'http://example.com/foo?v1'),
-            array('http://example.com', '', 'foo', 'http://example.com/foo?v1'),
-            array('http://example.com/', '', 'foo', 'http://example.com/foo?v1'),
-            array('http://example.com/foo', '', 'foo', 'http://example.com/foo/foo?v1'),
-            array('http://example.com/foo/', '', 'foo', 'http://example.com/foo/foo?v1'),
-
-            array(array('http://example.com'), '', '/foo', 'http://example.com/foo?v1'),
-            array(array('http://example.com', 'http://example.net'), '', '/foo', 'http://example.com/foo?v1'),
-            array(array('http://example.com', 'http://example.net'), '', '/fooa', 'http://example.net/fooa?v1'),
-
-            array('http://example.com', 'version-%2$s/%1$s', '/foo', 'http://example.com/version-v1/foo'),
-            array('http://example.com', 'version-%2$s/%1$s', 'foo', 'http://example.com/version-v1/foo'),
-            array('http://example.com', 'version-%2$s/%1$s', 'foo/', 'http://example.com/version-v1/foo/'),
-            array('http://example.com', 'version-%2$s/%1$s', '/foo/', 'http://example.com/version-v1/foo/'),
-        );
+        return [
+            ['http://example.net', '', 'http://example.com/foo', 'http://example.com/foo'],
+            ['http://example.net', '', 'https://example.com/foo', 'https://example.com/foo'],
+            ['http://example.net', '', '//example.com/foo', '//example.com/foo'],
+
+            ['http://example.com', '', '/foo', 'http://example.com/foo?v1'],
+            ['http://example.com', '', 'foo', 'http://example.com/foo?v1'],
+            ['http://example.com/', '', 'foo', 'http://example.com/foo?v1'],
+            ['http://example.com/foo', '', 'foo', 'http://example.com/foo/foo?v1'],
+            ['http://example.com/foo/', '', 'foo', 'http://example.com/foo/foo?v1'],
+
+            [['http://example.com'], '', '/foo', 'http://example.com/foo?v1'],
+            [['http://example.com', 'http://example.net'], '', '/foo', 'http://example.com/foo?v1'],
+            [['http://example.com', 'http://example.net'], '', '/fooa', 'http://example.net/fooa?v1'],
+
+            ['http://example.com', 'version-%2$s/%1$s', '/foo', 'http://example.com/version-v1/foo'],
+            ['http://example.com', 'version-%2$s/%1$s', 'foo', 'http://example.com/version-v1/foo'],
+            ['http://example.com', 'version-%2$s/%1$s', 'foo/', 'http://example.com/version-v1/foo/'],
+            ['http://example.com', 'version-%2$s/%1$s', '/foo/', 'http://example.com/version-v1/foo/'],
+        ];
     }
 
     /**
@@ -63,18 +63,18 @@ public function testGetUrlWithContext($secure, $baseUrls, $format, $path, $expec
 
     public function getContextConfigs()
     {
-        return array(
-            array(false, 'http://example.com', '', 'foo', 'http://example.com/foo?v1'),
-            array(false, array('http://example.com'), '', 'foo', 'http://example.com/foo?v1'),
-            array(false, array('http://example.com', 'https://example.com'), '', 'foo', 'http://example.com/foo?v1'),
-            array(false, array('http://example.com', 'https://example.com'), '', 'fooa', 'https://example.com/fooa?v1'),
-            array(false, array('http://example.com/bar'), '', 'foo', 'http://example.com/bar/foo?v1'),
-            array(false, array('http://example.com/bar/'), '', 'foo', 'http://example.com/bar/foo?v1'),
-            array(false, array('//example.com/bar/'), '', 'foo', '//example.com/bar/foo?v1'),
-
-            array(true, array('http://example.com'), '', 'foo', 'http://example.com/foo?v1'),
-            array(true, array('http://example.com', 'https://example.com'), '', 'foo', 'https://example.com/foo?v1'),
-        );
+        return [
+            [false, 'http://example.com', '', 'foo', 'http://example.com/foo?v1'],
+            [false, ['http://example.com'], '', 'foo', 'http://example.com/foo?v1'],
+            [false, ['http://example.com', 'https://example.com'], '', 'foo', 'http://example.com/foo?v1'],
+            [false, ['http://example.com', 'https://example.com'], '', 'fooa', 'https://example.com/fooa?v1'],
+            [false, ['http://example.com/bar'], '', 'foo', 'http://example.com/bar/foo?v1'],
+            [false, ['http://example.com/bar/'], '', 'foo', 'http://example.com/bar/foo?v1'],
+            [false, ['//example.com/bar/'], '', 'foo', '//example.com/bar/foo?v1'],
+
+            [true, ['http://example.com'], '', 'foo', 'http://example.com/foo?v1'],
+            [true, ['http://example.com', 'https://example.com'], '', 'foo', 'https://example.com/foo?v1'],
+        ];
     }
 
     public function testVersionStrategyGivesAbsoluteURL()
@@ -93,7 +93,7 @@ public function testVersionStrategyGivesAbsoluteURL()
      */
     public function testNoBaseUrls()
     {
-        new UrlPackage(array(), new EmptyVersionStrategy());
+        new UrlPackage([], new EmptyVersionStrategy());
     }
 
     /**
@@ -101,7 +101,7 @@ public function testNoBaseUrls()
      */
     public function testWrongBaseUrl()
     {
-        new UrlPackage(array('not-a-url'), new EmptyVersionStrategy());
+        new UrlPackage(['not-a-url'], new EmptyVersionStrategy());
     }
 
     private function getContext($secure)
diff --git a/src/Symfony/Component/Asset/Tests/VersionStrategy/StaticVersionStrategyTest.php b/src/Symfony/Component/Asset/Tests/VersionStrategy/StaticVersionStrategyTest.php
index 7b5a3e8d5cec..c56a8726a845 100644
--- a/src/Symfony/Component/Asset/Tests/VersionStrategy/StaticVersionStrategyTest.php
+++ b/src/Symfony/Component/Asset/Tests/VersionStrategy/StaticVersionStrategyTest.php
@@ -36,9 +36,9 @@ public function testApplyVersion($path, $version, $format)
 
     public function getConfigs()
     {
-        return array(
-            array('test-path', 'v1', null),
-            array('test-path', 'v2', '%s?test%s'),
-        );
+        return [
+            ['test-path', 'v1', null],
+            ['test-path', 'v2', '%s?test%s'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Asset/UrlPackage.php b/src/Symfony/Component/Asset/UrlPackage.php
index 77055e43db37..23809a55fdf2 100644
--- a/src/Symfony/Component/Asset/UrlPackage.php
+++ b/src/Symfony/Component/Asset/UrlPackage.php
@@ -35,7 +35,7 @@
  */
 class UrlPackage extends Package
 {
-    private $baseUrls = array();
+    private $baseUrls = [];
     private $sslPackage;
 
     /**
@@ -125,7 +125,7 @@ protected function chooseBaseUrl($path)
 
     private function getSslUrls($urls)
     {
-        $sslUrls = array();
+        $sslUrls = [];
         foreach ($urls as $url) {
             if ('https://' === substr($url, 0, 8) || '//' === substr($url, 0, 2)) {
                 $sslUrls[] = $url;
diff --git a/src/Symfony/Component/BrowserKit/Client.php b/src/Symfony/Component/BrowserKit/Client.php
index 5eef4d0a4c08..294b1fb84bbf 100644
--- a/src/Symfony/Component/BrowserKit/Client.php
+++ b/src/Symfony/Component/BrowserKit/Client.php
@@ -30,7 +30,7 @@ abstract class Client
 {
     protected $history;
     protected $cookieJar;
-    protected $server = array();
+    protected $server = [];
     protected $internalRequest;
     protected $request;
     protected $internalResponse;
@@ -42,7 +42,7 @@ abstract class Client
 
     private $maxRedirects = -1;
     private $redirectCount = 0;
-    private $redirects = array();
+    private $redirects = [];
     private $isMainRequest = true;
 
     /**
@@ -50,7 +50,7 @@ abstract class Client
      * @param History   $history   A History instance to store the browser history
      * @param CookieJar $cookieJar A CookieJar instance to store the cookies
      */
-    public function __construct(array $server = array(), History $history = null, CookieJar $cookieJar = null)
+    public function __construct(array $server = [], History $history = null, CookieJar $cookieJar = null)
     {
         $this->setServerParameters($server);
         $this->history = $history ?: new History();
@@ -121,9 +121,9 @@ public function insulate($insulated = true)
      */
     public function setServerParameters(array $server)
     {
-        $this->server = array_merge(array(
+        $this->server = array_merge([
             'HTTP_USER_AGENT' => 'Symfony BrowserKit',
-        ), $server);
+        ], $server);
     }
 
     /**
@@ -252,7 +252,7 @@ public function click(Link $link)
      *
      * @return Crawler
      */
-    public function submit(Form $form, array $values = array())
+    public function submit(Form $form, array $values = [])
     {
         $form->setValues($values);
 
@@ -272,7 +272,7 @@ public function submit(Form $form, array $values = array())
      *
      * @return Crawler
      */
-    public function request($method, $uri, array $parameters = array(), array $files = array(), array $server = array(), $content = null, $changeHistory = true)
+    public function request($method, $uri, array $parameters = [], array $files = [], array $server = [], $content = null, $changeHistory = true)
     {
         if ($this->isMainRequest) {
             $this->redirectCount = 0;
@@ -359,7 +359,7 @@ protected function doRequestInProcess($request)
         if (file_exists($deprecationsFile)) {
             $deprecations = file_get_contents($deprecationsFile);
             unlink($deprecationsFile);
-            foreach ($deprecations ? unserialize($deprecations) : array() as $deprecation) {
+            foreach ($deprecations ? unserialize($deprecations) : [] as $deprecation) {
                 if ($deprecation[0]) {
                     @trigger_error($deprecation[1], E_USER_DEPRECATED);
                 } else {
@@ -503,9 +503,9 @@ public function followRedirect()
 
         $request = $this->internalRequest;
 
-        if (\in_array($this->internalResponse->getStatus(), array(301, 302, 303))) {
+        if (\in_array($this->internalResponse->getStatus(), [301, 302, 303])) {
             $method = 'GET';
-            $files = array();
+            $files = [];
             $content = null;
         } else {
             $method = $request->getMethod();
@@ -515,7 +515,7 @@ public function followRedirect()
 
         if ('GET' === strtoupper($method)) {
             // Don't forward parameters for GET request as it should reach the redirection URI
-            $parameters = array();
+            $parameters = [];
         } else {
             $parameters = $request->getParameters();
         }
diff --git a/src/Symfony/Component/BrowserKit/Cookie.php b/src/Symfony/Component/BrowserKit/Cookie.php
index 8857b62317b4..b01233033593 100644
--- a/src/Symfony/Component/BrowserKit/Cookie.php
+++ b/src/Symfony/Component/BrowserKit/Cookie.php
@@ -22,7 +22,7 @@ class Cookie
      * Handles dates as defined by RFC 2616 section 3.3.1, and also some other
      * non-standard, but common formats.
      */
-    private static $dateFormats = array(
+    private static $dateFormats = [
         'D, d M Y H:i:s T',
         'D, d-M-y H:i:s T',
         'D, d-M-Y H:i:s T',
@@ -30,7 +30,7 @@ class Cookie
         'D, d-m-Y H:i:s T',
         'D M j G:i:s Y',
         'D M d H:i:s Y T',
-    );
+    ];
 
     protected $name;
     protected $value;
@@ -129,7 +129,7 @@ public static function fromString($cookie, $url = null)
 
         list($name, $value) = explode('=', array_shift($parts), 2);
 
-        $values = array(
+        $values = [
             'name' => trim($name),
             'value' => trim($value),
             'expires' => null,
@@ -138,7 +138,7 @@ public static function fromString($cookie, $url = null)
             'secure' => false,
             'httponly' => false,
             'passedRawValue' => true,
-        );
+        ];
 
         if (null !== $url) {
             if ((false === $urlParts = parse_url($url)) || !isset($urlParts['host'])) {
diff --git a/src/Symfony/Component/BrowserKit/CookieJar.php b/src/Symfony/Component/BrowserKit/CookieJar.php
index 24eb9abeddbf..bce66197d370 100644
--- a/src/Symfony/Component/BrowserKit/CookieJar.php
+++ b/src/Symfony/Component/BrowserKit/CookieJar.php
@@ -18,7 +18,7 @@
  */
 class CookieJar
 {
-    protected $cookieJar = array();
+    protected $cookieJar = [];
 
     public function set(Cookie $cookie)
     {
@@ -84,7 +84,7 @@ public function expire($name, $path = '/', $domain = null)
             // this should never happen but it allows for a better BC
             $domains = array_keys($this->cookieJar);
         } else {
-            $domains = array($domain);
+            $domains = [$domain];
         }
 
         foreach ($domains as $domain) {
@@ -105,7 +105,7 @@ public function expire($name, $path = '/', $domain = null)
      */
     public function clear()
     {
-        $this->cookieJar = array();
+        $this->cookieJar = [];
     }
 
     /**
@@ -116,7 +116,7 @@ public function clear()
      */
     public function updateFromSetCookie(array $setCookies, $uri = null)
     {
-        $cookies = array();
+        $cookies = [];
 
         foreach ($setCookies as $cookie) {
             foreach (explode(',', $cookie) as $i => $part) {
@@ -157,7 +157,7 @@ public function all()
     {
         $this->flushExpiredCookies();
 
-        $flattenedCookies = array();
+        $flattenedCookies = [];
         foreach ($this->cookieJar as $path) {
             foreach ($path as $cookies) {
                 foreach ($cookies as $cookie) {
@@ -181,8 +181,8 @@ public function allValues($uri, $returnsRawValue = false)
     {
         $this->flushExpiredCookies();
 
-        $parts = array_replace(array('path' => '/'), parse_url($uri));
-        $cookies = array();
+        $parts = array_replace(['path' => '/'], parse_url($uri));
+        $cookies = [];
         foreach ($this->cookieJar as $domain => $pathCookies) {
             if ($domain) {
                 $domain = '.'.ltrim($domain, '.');
diff --git a/src/Symfony/Component/BrowserKit/History.php b/src/Symfony/Component/BrowserKit/History.php
index beec17c6b4d9..8ed3fd17fee1 100644
--- a/src/Symfony/Component/BrowserKit/History.php
+++ b/src/Symfony/Component/BrowserKit/History.php
@@ -18,7 +18,7 @@
  */
 class History
 {
-    protected $stack = array();
+    protected $stack = [];
     protected $position = -1;
 
     /**
@@ -26,7 +26,7 @@ class History
      */
     public function clear()
     {
-        $this->stack = array();
+        $this->stack = [];
         $this->position = -1;
     }
 
diff --git a/src/Symfony/Component/BrowserKit/Request.php b/src/Symfony/Component/BrowserKit/Request.php
index d78868e53902..599652bf34b2 100644
--- a/src/Symfony/Component/BrowserKit/Request.php
+++ b/src/Symfony/Component/BrowserKit/Request.php
@@ -33,7 +33,7 @@ class Request
      * @param array  $server     An array of server parameters
      * @param string $content    The raw body data
      */
-    public function __construct($uri, $method, array $parameters = array(), array $files = array(), array $cookies = array(), array $server = array(), $content = null)
+    public function __construct($uri, $method, array $parameters = [], array $files = [], array $cookies = [], array $server = [], $content = null)
     {
         $this->uri = $uri;
         $this->method = $method;
diff --git a/src/Symfony/Component/BrowserKit/Response.php b/src/Symfony/Component/BrowserKit/Response.php
index 766a87e4d6d6..0ef12e3b4e33 100644
--- a/src/Symfony/Component/BrowserKit/Response.php
+++ b/src/Symfony/Component/BrowserKit/Response.php
@@ -28,7 +28,7 @@ class Response
      * @param int    $status  The response status code
      * @param array  $headers An array of headers
      */
-    public function __construct($content = '', $status = 200, array $headers = array())
+    public function __construct($content = '', $status = 200, array $headers = [])
     {
         $this->content = $content;
         $this->status = $status;
@@ -116,10 +116,10 @@ public function getHeader($header, $first = true)
                     return \is_array($value) ? (\count($value) ? $value[0] : '') : $value;
                 }
 
-                return \is_array($value) ? $value : array($value);
+                return \is_array($value) ? $value : [$value];
             }
         }
 
-        return $first ? null : array();
+        return $first ? null : [];
     }
 }
diff --git a/src/Symfony/Component/BrowserKit/Tests/ClientTest.php b/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
index a5c72943aec3..ab6d118589c1 100644
--- a/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
@@ -76,13 +76,13 @@ class ClientTest extends TestCase
 {
     public function testGetHistory()
     {
-        $client = new TestClient(array(), $history = new History());
+        $client = new TestClient([], $history = new History());
         $this->assertSame($history, $client->getHistory(), '->getHistory() returns the History');
     }
 
     public function testGetCookieJar()
     {
-        $client = new TestClient(array(), null, $cookieJar = new CookieJar());
+        $client = new TestClient([], null, $cookieJar = new CookieJar());
         $this->assertSame($cookieJar, $client->getCookieJar(), '->getCookieJar() returns the CookieJar');
     }
 
@@ -97,7 +97,7 @@ public function testGetRequest()
     public function testGetRequestWithIpAsHttpHost()
     {
         $client = new TestClient();
-        $client->request('GET', 'https://example.com/foo', array(), array(), array('HTTP_HOST' => '127.0.0.1'));
+        $client->request('GET', 'https://example.com/foo', [], [], ['HTTP_HOST' => '127.0.0.1']);
 
         $this->assertEquals('https://example.com/foo', $client->getRequest()->getUri());
         $headers = $client->getRequest()->getServer();
@@ -130,7 +130,7 @@ public function testGetContent()
         $json = '{"jsonrpc":"2.0","method":"echo","id":7,"params":["Hello World"]}';
 
         $client = new TestClient();
-        $client->request('POST', 'http://example.com/jsonrpc', array(), array(), array(), $json);
+        $client->request('POST', 'http://example.com/jsonrpc', [], [], [], $json);
         $this->assertEquals($json, $client->getRequest()->getContent());
     }
 
@@ -246,18 +246,18 @@ public function testRequestHistory()
     public function testRequestCookies()
     {
         $client = new TestClient();
-        $client->setNextResponse(new Response('<html><a href="/foo">foo</a></html>', 200, array('Set-Cookie' => 'foo=bar')));
+        $client->setNextResponse(new Response('<html><a href="/foo">foo</a></html>', 200, ['Set-Cookie' => 'foo=bar']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
-        $this->assertEquals(array('foo' => 'bar'), $client->getCookieJar()->allValues('http://www.example.com/foo/foobar'), '->request() updates the CookieJar');
+        $this->assertEquals(['foo' => 'bar'], $client->getCookieJar()->allValues('http://www.example.com/foo/foobar'), '->request() updates the CookieJar');
 
         $client->request('GET', 'bar');
-        $this->assertEquals(array('foo' => 'bar'), $client->getCookieJar()->allValues('http://www.example.com/foo/foobar'), '->request() updates the CookieJar');
+        $this->assertEquals(['foo' => 'bar'], $client->getCookieJar()->allValues('http://www.example.com/foo/foobar'), '->request() updates the CookieJar');
     }
 
     public function testRequestSecureCookies()
     {
         $client = new TestClient();
-        $client->setNextResponse(new Response('<html><a href="/foo">foo</a></html>', 200, array('Set-Cookie' => 'foo=bar; path=/; secure')));
+        $client->setNextResponse(new Response('<html><a href="/foo">foo</a></html>', 200, ['Set-Cookie' => 'foo=bar; path=/; secure']));
         $client->request('GET', 'https://www.example.com/foo/foobar');
 
         $this->assertTrue($client->getCookieJar()->get('foo', '/', 'www.example.com')->isSecure());
@@ -298,7 +298,7 @@ public function testSubmit()
 
     public function testSubmitPreserveAuth()
     {
-        $client = new TestClient(array('PHP_AUTH_USER' => 'foo', 'PHP_AUTH_PW' => 'bar'));
+        $client = new TestClient(['PHP_AUTH_USER' => 'foo', 'PHP_AUTH_PW' => 'bar']);
         $client->setNextResponse(new Response('<html><form action="/foo"><input type="submit" /></form></html>'));
         $crawler = $client->request('GET', 'http://www.example.com/foo/foobar');
 
@@ -332,26 +332,26 @@ public function testFollowRedirect()
             $this->assertInstanceOf('LogicException', $e, '->followRedirect() throws a \LogicException if the request was not redirected');
         }
 
-        $client->setNextResponse(new Response('', 302, array('Location' => 'http://www.example.com/redirected')));
+        $client->setNextResponse(new Response('', 302, ['Location' => 'http://www.example.com/redirected']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
         $client->followRedirect();
 
         $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), '->followRedirect() follows a redirect if any');
 
         $client = new TestClient();
-        $client->setNextResponse(new Response('', 302, array('Location' => 'http://www.example.com/redirected')));
+        $client->setNextResponse(new Response('', 302, ['Location' => 'http://www.example.com/redirected']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
 
         $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), '->followRedirect() automatically follows redirects if followRedirects is true');
 
         $client = new TestClient();
-        $client->setNextResponse(new Response('', 201, array('Location' => 'http://www.example.com/redirected')));
+        $client->setNextResponse(new Response('', 201, ['Location' => 'http://www.example.com/redirected']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
 
         $this->assertEquals('http://www.example.com/foo/foobar', $client->getRequest()->getUri(), '->followRedirect() does not follow redirect if HTTP Code is not 30x');
 
         $client = new TestClient();
-        $client->setNextResponse(new Response('', 201, array('Location' => 'http://www.example.com/redirected')));
+        $client->setNextResponse(new Response('', 201, ['Location' => 'http://www.example.com/redirected']));
         $client->followRedirects(false);
         $client->request('GET', 'http://www.example.com/foo/foobar');
 
@@ -366,12 +366,12 @@ public function testFollowRedirect()
     public function testFollowRelativeRedirect()
     {
         $client = new TestClient();
-        $client->setNextResponse(new Response('', 302, array('Location' => '/redirected')));
+        $client->setNextResponse(new Response('', 302, ['Location' => '/redirected']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
         $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), '->followRedirect() follows a redirect if any');
 
         $client = new TestClient();
-        $client->setNextResponse(new Response('', 302, array('Location' => '/redirected:1234')));
+        $client->setNextResponse(new Response('', 302, ['Location' => '/redirected:1234']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
         $this->assertEquals('http://www.example.com/redirected:1234', $client->getRequest()->getUri(), '->followRedirect() follows relative urls');
     }
@@ -380,11 +380,11 @@ public function testFollowRedirectWithMaxRedirects()
     {
         $client = new TestClient();
         $client->setMaxRedirects(1);
-        $client->setNextResponse(new Response('', 302, array('Location' => 'http://www.example.com/redirected')));
+        $client->setNextResponse(new Response('', 302, ['Location' => 'http://www.example.com/redirected']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
         $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), '->followRedirect() follows a redirect if any');
 
-        $client->setNextResponse(new Response('', 302, array('Location' => 'http://www.example.com/redirected2')));
+        $client->setNextResponse(new Response('', 302, ['Location' => 'http://www.example.com/redirected2']));
         try {
             $client->followRedirect();
             $this->fail('->followRedirect() throws a \LogicException if the request was redirected and limit of redirections was reached');
@@ -392,60 +392,60 @@ public function testFollowRedirectWithMaxRedirects()
             $this->assertInstanceOf('LogicException', $e, '->followRedirect() throws a \LogicException if the request was redirected and limit of redirections was reached');
         }
 
-        $client->setNextResponse(new Response('', 302, array('Location' => 'http://www.example.com/redirected')));
+        $client->setNextResponse(new Response('', 302, ['Location' => 'http://www.example.com/redirected']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
         $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), '->followRedirect() follows a redirect if any');
 
-        $client->setNextResponse(new Response('', 302, array('Location' => '/redirected')));
+        $client->setNextResponse(new Response('', 302, ['Location' => '/redirected']));
         $client->request('GET', 'http://www.example.com/foo/foobar');
 
         $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), '->followRedirect() follows relative URLs');
 
         $client = new TestClient();
-        $client->setNextResponse(new Response('', 302, array('Location' => '//www.example.org/')));
+        $client->setNextResponse(new Response('', 302, ['Location' => '//www.example.org/']));
         $client->request('GET', 'https://www.example.com/');
 
         $this->assertEquals('https://www.example.org/', $client->getRequest()->getUri(), '->followRedirect() follows protocol-relative URLs');
 
         $client = new TestClient();
-        $client->setNextResponse(new Response('', 302, array('Location' => 'http://www.example.com/redirected')));
-        $client->request('POST', 'http://www.example.com/foo/foobar', array('name' => 'bar'));
+        $client->setNextResponse(new Response('', 302, ['Location' => 'http://www.example.com/redirected']));
+        $client->request('POST', 'http://www.example.com/foo/foobar', ['name' => 'bar']);
 
         $this->assertEquals('GET', $client->getRequest()->getMethod(), '->followRedirect() uses a GET for 302');
-        $this->assertEquals(array(), $client->getRequest()->getParameters(), '->followRedirect() does not submit parameters when changing the method');
+        $this->assertEquals([], $client->getRequest()->getParameters(), '->followRedirect() does not submit parameters when changing the method');
     }
 
     public function testFollowRedirectWithCookies()
     {
         $client = new TestClient();
         $client->followRedirects(false);
-        $client->setNextResponse(new Response('', 302, array(
+        $client->setNextResponse(new Response('', 302, [
             'Location' => 'http://www.example.com/redirected',
             'Set-Cookie' => 'foo=bar',
-        )));
+        ]));
         $client->request('GET', 'http://www.example.com/');
-        $this->assertEquals(array(), $client->getRequest()->getCookies());
+        $this->assertEquals([], $client->getRequest()->getCookies());
         $client->followRedirect();
-        $this->assertEquals(array('foo' => 'bar'), $client->getRequest()->getCookies());
+        $this->assertEquals(['foo' => 'bar'], $client->getRequest()->getCookies());
     }
 
     public function testFollowRedirectWithHeaders()
     {
-        $headers = array(
+        $headers = [
             'HTTP_HOST' => 'www.example.com',
             'HTTP_USER_AGENT' => 'Symfony BrowserKit',
             'CONTENT_TYPE' => 'application/vnd.custom+xml',
             'HTTPS' => false,
-        );
+        ];
 
         $client = new TestClient();
         $client->followRedirects(false);
-        $client->setNextResponse(new Response('', 302, array(
+        $client->setNextResponse(new Response('', 302, [
             'Location' => 'http://www.example.com/redirected',
-        )));
-        $client->request('GET', 'http://www.example.com/', array(), array(), array(
+        ]));
+        $client->request('GET', 'http://www.example.com/', [], [], [
             'CONTENT_TYPE' => 'application/vnd.custom+xml',
-        ));
+        ]);
 
         $this->assertEquals($headers, $client->getRequest()->getServer());
 
@@ -458,17 +458,17 @@ public function testFollowRedirectWithHeaders()
 
     public function testFollowRedirectWithPort()
     {
-        $headers = array(
+        $headers = [
             'HTTP_HOST' => 'www.example.com:8080',
             'HTTP_USER_AGENT' => 'Symfony BrowserKit',
             'HTTPS' => false,
             'HTTP_REFERER' => 'http://www.example.com:8080/',
-        );
+        ];
 
         $client = new TestClient();
-        $client->setNextResponse(new Response('', 302, array(
+        $client->setNextResponse(new Response('', 302, [
             'Location' => 'http://www.example.com:8080/redirected',
-        )));
+        ]));
         $client->request('GET', 'http://www.example.com:8080/');
 
         $this->assertEquals($headers, $client->getRequest()->getServer());
@@ -492,14 +492,14 @@ public function testGetMaxRedirects()
 
     public function testFollowRedirectWithPostMethod()
     {
-        $parameters = array('foo' => 'bar');
-        $files = array('myfile.foo' => 'baz');
-        $server = array('X_TEST_FOO' => 'bazbar');
+        $parameters = ['foo' => 'bar'];
+        $files = ['myfile.foo' => 'baz'];
+        $server = ['X_TEST_FOO' => 'b
57AE
azbar'];
         $content = 'foobarbaz';
 
         $client = new TestClient();
 
-        $client->setNextResponse(new Response('', 307, array('Location' => 'http://www.example.com/redirected')));
+        $client->setNextResponse(new Response('', 307, ['Location' => 'http://www.example.com/redirected']));
         $client->request('POST', 'http://www.example.com/foo/foobar', $parameters, $files, $server, $content);
 
         $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), '->followRedirect() follows a redirect with POST method');
@@ -512,15 +512,15 @@ public function testFollowRedirectWithPostMethod()
 
     public function testFollowRedirectDropPostMethod()
     {
-        $parameters = array('foo' => 'bar');
-        $files = array('myfile.foo' => 'baz');
-        $server = array('X_TEST_FOO' => 'bazbar');
+        $parameters = ['foo' => 'bar'];
+        $files = ['myfile.foo' => 'baz'];
+        $server = ['X_TEST_FOO' => 'bazbar'];
         $content = 'foobarbaz';
 
         $client = new TestClient();
 
-        foreach (array(301, 302, 303) as $code) {
-            $client->setNextResponse(new Response('', $code, array('Location' => 'http://www.example.com/redirected')));
+        foreach ([301, 302, 303] as $code) {
+            $client->setNextResponse(new Response('', $code, ['Location' => 'http://www.example.com/redirected']));
             $client->request('POST', 'http://www.example.com/foo/foobar', $parameters, $files, $server, $content);
 
             $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), '->followRedirect() follows a redirect with POST method on response code: '.$code.'.');
@@ -536,9 +536,9 @@ public function testBack()
     {
         $client = new TestClient();
 
-        $parameters = array('foo' => 'bar');
-        $files = array('myfile.foo' => 'baz');
-        $server = array('X_TEST_FOO' => 'bazbar');
+        $parameters = ['foo' => 'bar'];
+        $files = ['myfile.foo' => 'baz'];
+        $server = ['X_TEST_FOO' => 'bazbar'];
         $content = 'foobarbaz';
 
         $client->request('GET', 'http://www.example.com/foo/foobar', $parameters, $files, $server, $content);
@@ -556,9 +556,9 @@ public function testForward()
     {
         $client = new TestClient();
 
-        $parameters = array('foo' => 'bar');
-        $files = array('myfile.foo' => 'baz');
-        $server = array('X_TEST_FOO' => 'bazbar');
+        $parameters = ['foo' => 'bar'];
+        $files = ['myfile.foo' => 'baz'];
+        $server = ['X_TEST_FOO' => 'bazbar'];
         $content = 'foobarbaz';
 
         $client->request('GET', 'http://www.example.com/foo/foobar');
@@ -578,7 +578,7 @@ public function testBackAndFrowardWithRedirects()
         $client = new TestClient();
 
         $client->request('GET', 'http://www.example.com/foo');
-        $client->setNextResponse(new Response('', 301, array('Location' => 'http://www.example.com/redirected')));
+        $client->setNextResponse(new Response('', 301, ['Location' => 'http://www.example.com/redirected']));
         $client->request('GET', 'http://www.example.com/bar');
 
         $this->assertEquals('http://www.example.com/redirected', $client->getRequest()->getUri(), 'client followed redirect');
@@ -596,9 +596,9 @@ public function testReload()
     {
         $client = new TestClient();
 
-        $parameters = array('foo' => 'bar');
-        $files = array('myfile.foo' => 'baz');
-        $server = array('X_TEST_FOO' => 'bazbar');
+        $parameters = ['foo' => 'bar'];
+        $files = ['myfile.foo' => 'baz'];
+        $server = ['X_TEST_FOO' => 'bazbar'];
         $content = 'foobarbaz';
 
         $client->request('GET', 'http://www.example.com/foo/foobar', $parameters, $files, $server, $content);
@@ -618,7 +618,7 @@ public function testRestart()
         $client->restart();
 
         $this->assertTrue($client->getHistory()->isEmpty(), '->restart() clears the history');
-        $this->assertEquals(array(), $client->getCookieJar()->all(), '->restart() clears the cookies');
+        $this->assertEquals([], $client->getCookieJar()->all(), '->restart() clears the cookies');
     }
 
     public function testInsulatedRequests()
@@ -669,12 +669,12 @@ public function testSetServerParameterInRequest()
         $this->assertEquals('', $client->getServerParameter('HTTP_HOST'));
         $this->assertEquals('Symfony BrowserKit', $client->getServerParameter('HTTP_USER_AGENT'));
 
-        $client->request('GET', 'https://www.example.com/https/www.example.com', array(), array(), array(
+        $client->request('GET', 'https://www.example.com/https/www.example.com', [], [], [
             'HTTP_HOST' => 'testhost',
             'HTTP_USER_AGENT' => 'testua',
             'HTTPS' => false,
             'NEW_SERVER_KEY' => 'new-server-key-value',
-        ));
+        ]);
 
         $this->assertEquals('', $client->getServerParameter('HTTP_HOST'));
         $this->assertEquals('Symfony BrowserKit', $client->getServerParameter('HTTP_USER_AGENT'));
@@ -700,16 +700,16 @@ public function testRequestWithRelativeUri()
     {
         $client = new TestClient();
 
-        $client->request('GET', '/', array(), array(), array(
+        $client->request('GET', '/', [], [], [
             'HTTP_HOST' => 'testhost',
             'HTTPS' => true,
-        ));
+        ]);
         $this->assertEquals('https://testhost/', $client->getRequest()->getUri());
 
-        $client->request('GET', 'https://www.example.com/', array(), array(), array(
+        $client->request('GET', 'https://www.example.com/', [], [], [
             'HTTP_HOST' => 'testhost',
             'HTTPS' => false,
-        ));
+        ]);
         $this->assertEquals('https://www.example.com/', $client->getRequest()->getUri());
     }
 
@@ -717,12 +717,12 @@ public function testInternalRequest()
     {
         $client = new TestClient();
 
-        $client->request('GET', 'https://www.example.com/https/www.example.com', array(), array(), array(
+        $client->request('GET', 'https://www.example.com/https/www.example.com', [], [], [
             'HTTP_HOST' => 'testhost',
             'HTTP_USER_AGENT' => 'testua',
             'HTTPS' => false,
             'NEW_SERVER_KEY' => 'new-server-key-value',
-        ));
+        ]);
 
         $this->assertInstanceOf('Symfony\Component\BrowserKit\Request', $client->getInternalRequest());
     }
diff --git a/src/Symfony/Component/BrowserKit/Tests/CookieJarTest.php b/src/Symfony/Component/BrowserKit/Tests/CookieJarTest.php
index 3117e5ce4732..d88f0234c6d2 100644
--- a/src/Symfony/Component/BrowserKit/Tests/CookieJarTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/CookieJarTest.php
@@ -45,7 +45,7 @@ public function testAll()
         $cookieJar->set($cookie1 = new Cookie('foo', 'bar'));
         $cookieJar->set($cookie2 = new Cookie('bar', 'foo'));
 
-        $this->assertEquals(array($cookie1, $cookie2), $cookieJar->all(), '->all() returns all cookies in the jar');
+        $this->assertEquals([$cookie1, $cookie2], $cookieJar->all(), '->all() returns all cookies in the jar');
     }
 
     public function testClear()
@@ -56,12 +56,12 @@ public function testClear()
 
         $cookieJar->clear();
 
-        $this->assertEquals(array(), $cookieJar->all(), '->clear() expires all cookies');
+        $this->assertEquals([], $cookieJar->all(), '->clear() expires all cookies');
     }
 
     public function testUpdateFromResponse()
     {
-        $response = new Response('', 200, array('Set-Cookie' => 'foo=foo'));
+        $response = new Response('', 200, ['Set-Cookie' => 'foo=foo']);
 
         $cookieJar = new CookieJar();
         $cookieJar->updateFromResponse($response);
@@ -71,7 +71,7 @@ public function testUpdateFromResponse()
 
     public function testUpdateFromSetCookie()
     {
-        $setCookies = array('foo=foo');
+        $setCookies = ['foo=foo'];
 
         $cookieJar = new CookieJar();
         $cookieJar->set(new Cookie('bar', 'bar'));
@@ -86,15 +86,15 @@ public function testUpdateFromSetCookie()
     public function testUpdateFromEmptySetCookie()
     {
         $cookieJar = new CookieJar();
-        $cookieJar->updateFromSetCookie(array(''));
-        $this->assertEquals(array(), $cookieJar->all());
+        $cookieJar->updateFromSetCookie(['']);
+        $this->assertEquals([], $cookieJar->all());
     }
 
     public function testUpdateFromSetCookieWithMultipleCookies()
     {
         $timestamp = time() + 3600;
         $date = gmdate('D, d M Y H:i:s \G\M\T', $timestamp);
-        $setCookies = array(sprintf('foo=foo; expires=%s; domain=.symfony.com; path=/, bar=bar; domain=.blog.symfony.com, PHPSESSID=id; expires=%1$s', $date));
+        $setCookies = [sprintf('foo=foo; expires=%s; domain=.symfony.com; path=/, bar=bar; domain=.blog.symfony.com, PHPSESSID=id; expires=%1$s', $date)];
 
         $cookieJar = new CookieJar();
         $cookieJar->updateFromSetCookie($setCookies);
@@ -132,15 +132,15 @@ public function testAllValues($uri, $values)
 
     public function provideAllValuesValues()
     {
-        return array(
-            array('http://www.example.com', array('foo_nothing', 'foo_domain')),
-            array('http://www.example.com/', array('foo_nothing', 'foo_domain')),
-            array('http://foo.example.com/', array('foo_nothing', 'foo_domain')),
-            array('http://foo.example1.com/', array('foo_nothing')),
-            array('https://foo.example.com/', array('foo_nothing', 'foo_secure', 'foo_domain')),
-            array('http://www.example.com/foo/bar', array('foo_nothing', 'foo_path', 'foo_domain')),
-            array('http://www4.example.com/', array('foo_nothing', 'foo_domain', 'foo_strict_domain')),
-        );
+        return [
+            ['http://www.example.com', ['foo_nothing', 'foo_domain']],
+            ['http://www.example.com/', ['foo_nothing', 'foo_domain']],
+            ['http://foo.example.com/', ['foo_nothing', 'foo_domain']],
+            ['http://foo.example1.com/', ['foo_nothing']],
+            ['https://foo.example.com/', ['foo_nothing', 'foo_secure', 'foo_domain']],
+            ['http://www.example.com/foo/bar', ['foo_nothing', 'foo_path', 'foo_domain']],
+            ['http://www4.example.com/', ['foo_nothing', 'foo_domain', 'foo_strict_domain']],
+        ];
     }
 
     public function testEncodedValues()
@@ -148,8 +148,8 @@ public function testEncodedValues()
         $cookieJar = new CookieJar();
         $cookieJar->set($cookie = new Cookie('foo', 'bar%3Dbaz', null, '/', '', false, true, true));
 
-        $this->assertEquals(array('foo' => 'bar=baz'), $cookieJar->allValues('/'));
-        $this->assertEquals(array('foo' => 'bar%3Dbaz'), $cookieJar->allRawValues('/'));
+        $this->assertEquals(['foo' => 'bar=baz'], $cookieJar->allValues('/'));
+        $this->assertEquals(['foo' => 'bar%3Dbaz'], $cookieJar->allRawValues('/'));
     }
 
     public function testCookieExpireWithSameNameButDifferentPaths()
@@ -160,9 +160,9 @@ public function testCookieExpireWithSameNameButDifferentPaths()
         $cookieJar->expire('foo', '/foo');
 
         $this->assertNull($cookieJar->get('foo'), '->get() returns null if the cookie is expired');
-        $this->assertEquals(array(), array_keys($cookieJar->allValues('http://example.com/')));
-        $this->assertEquals(array(), $cookieJar->allValues('http://example.com/foo'));
-        $this->assertEquals(array('foo' => 'bar2'), $cookieJar->allValues('http://example.com/bar'));
+        $this->assertEquals([], array_keys($cookieJar->allValues('http://example.com/')));
+        $this->assertEquals([], $cookieJar->allValues('http://example.com/foo'));
+        $this->assertEquals(['foo' => 'bar2'], $cookieJar->allValues('http://example.com/bar'));
     }
 
     public function testCookieExpireWithNullPaths()
@@ -172,7 +172,7 @@ public function testCookieExpireWithNullPaths()
         $cookieJar->expire('foo', null);
 
         $this->assertNull($cookieJar->get('foo'), '->get() returns null if the cookie is expired');
-        $this->assertEquals(array(), array_keys($cookieJar->allValues('http://example.com/')));
+        $this->assertEquals([], array_keys($cookieJar->allValues('http://example.com/')));
     }
 
     public function testCookieExpireWithDomain()
@@ -182,7 +182,7 @@ public function testCookieExpireWithDomain()
         $cookieJar->expire('foo', '/foo', 'http://example2.com/');
 
         $this->assertNull($cookieJar->get('foo'), '->get() returns null if the cookie is expired');
-        $this->assertEquals(array(), array_keys($cookieJar->allValues('http://example2.com/')));
+        $this->assertEquals([], array_keys($cookieJar->allValues('http://example2.com/')));
     }
 
     public function testCookieWithSameNameButDifferentPaths()
@@ -191,9 +191,9 @@ public function testCookieWithSameNameButDifferentPaths()
         $cookieJar->set($cookie1 = new Cookie('foo', 'bar1', null, '/foo'));
         $cookieJar->set($cookie2 = new Cookie('foo', 'bar2', null, '/bar'));
 
-        $this->assertEquals(array(), array_keys($cookieJar->allValues('http://example.com/')));
-        $this->assertEquals(array('foo' => 'bar1'), $cookieJar->allValues('http://example.com/foo'));
-        $this->assertEquals(array('foo' => 'bar2'), $cookieJar->allValues('http://example.com/bar'));
+        $this->assertEquals([], array_keys($cookieJar->allValues('http://example.com/')));
+        $this->assertEquals(['foo' => 'bar1'], $cookieJar->allValues('http://example.com/foo'));
+        $this->assertEquals(['foo' => 'bar2'], $cookieJar->allValues('http://example.com/bar'));
     }
 
     public function testCookieWithSameNameButDifferentDomains()
@@ -202,9 +202,9 @@ public function testCookieWithSameNameButDifferentDomains()
         $cookieJar->set($cookie1 = new Cookie('foo', 'bar1', null, '/', 'foo.example.com'));
         $cookieJar->set($cookie2 = new Cookie('foo', 'bar2', null, '/', 'bar.example.com'));
 
-        $this->assertEquals(array(), array_keys($cookieJar->allValues('http://example.com/')));
-        $this->assertEquals(array('foo' => 'bar1'), $cookieJar->allValues('http://foo.example.com/'));
-        $this->assertEquals(array('foo' => 'bar2'), $cookieJar->allValues('http://bar.example.com/'));
+        $this->assertEquals([], array_keys($cookieJar->allValues('http://example.com/')));
+        $this->assertEquals(['foo' => 'bar1'], $cookieJar->allValues('http://foo.example.com/'));
+        $this->assertEquals(['foo' => 'bar2'], $cookieJar->allValues('http://bar.example.com/'));
     }
 
     public function testCookieGetWithSubdomain()
@@ -246,7 +246,7 @@ public function testCookieWithWildcardDomain()
         $cookieJar = new CookieJar();
         $cookieJar->set(new Cookie('foo', 'bar', null, '/', '.example.com'));
 
-        $this->assertEquals(array('foo' => 'bar'), $cookieJar->allValues('http://www.example.com'));
+        $this->assertEquals(['foo' => 'bar'], $cookieJar->allValues('http://www.example.com'));
         $this->assertEmpty($cookieJar->allValues('http://wwwexample.com'));
     }
 }
diff --git a/src/Symfony/Component/BrowserKit/Tests/CookieTest.php b/src/Symfony/Component/BrowserKit/Tests/CookieTest.php
index 2f5a08d10414..1ffa1d87ed3b 100644
--- a/src/Symfony/Component/BrowserKit/Tests/CookieTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/CookieTest.php
@@ -41,16 +41,16 @@ public function testToFromString($cookie, $url = null)
 
     public function getTestsForToFromString()
     {
-        return array(
-            array('foo=bar; path=/'),
-            array('foo=bar; path=/foo'),
-            array('foo=bar; domain=google.com; path=/'),
-            array('foo=bar; domain=example.com; path=/; secure', 'https://example.com/'),
-            array('foo=bar; path=/; httponly'),
-            array('foo=bar; domain=google.com; path=/foo; secure; httponly', 'https://google.com/'),
-            array('foo=bar=baz; path=/'),
-            array('foo=bar%3Dbaz; path=/'),
-        );
+        return [
+            ['foo=bar; path=/'],
+            ['foo=bar; path=/foo'],
+            ['foo=bar; domain=google.com; path=/'],
+            ['foo=bar; domain=example.com; path=/; secure', 'https://example.com/'],
+            ['foo=bar; path=/; httponly'],
+            ['foo=bar; domain=google.com; path=/foo; secure; httponly', 'https://google.com/'],
+            ['foo=bar=baz; path=/'],
+            ['foo=bar%3Dbaz; path=/'],
+        ];
     }
 
     public function testFromStringIgnoreSecureFlag()
@@ -69,16 +69,16 @@ public function testFromStringAcceptsSeveralExpiresDateFormats($cookie)
 
     public function getExpireCookieStrings()
     {
-        return array(
-            array('foo=bar; expires=Fri, 31-Jul-2020 08:49:37 GMT'),
-            array('foo=bar; expires=Fri, 31 Jul 2020 08:49:37 GMT'),
-            array('foo=bar; expires=Fri, 31-07-2020 08:49:37 GMT'),
-            array('foo=bar; expires=Fri, 31-07-20 08:49:37 GMT'),
-            array('foo=bar; expires=Friday, 31-Jul-20 08:49:37 GMT'),
-            array('foo=bar; expires=Fri Jul 31 08:49:37 2020'),
-            array('foo=bar; expires=\'Fri Jul 31 08:49:37 2020\''),
-            array('foo=bar; expires=Friday July 31st 2020, 08:49:37 GMT'),
-        );
+        return [
+            ['foo=bar; expires=Fri, 31-Jul-2020 08:49:37 GMT'],
+            ['foo=bar; expires=Fri, 31 Jul 2020 08:49:37 GMT'],
+            ['foo=bar; expires=Fri, 31-07-2020 08:49:37 GMT'],
+            ['foo=bar; expires=Fri, 31-07-20 08:49:37 GMT'],
+            ['foo=bar; expires=Friday, 31-Jul-20 08:49:37 GMT'],
+            ['foo=bar; expires=Fri Jul 31 08:49:37 2020'],
+            ['foo=bar; expires=\'Fri Jul 31 08:49:37 2020\''],
+            ['foo=bar; expires=Friday July 31st 2020, 08:49:37 GMT'],
+        ];
     }
 
     public function testFromStringWithCapitalization()
diff --git a/src/Symfony/Component/BrowserKit/Tests/RequestTest.php b/src/Symfony/Component/BrowserKit/Tests/RequestTest.php
index f163de967437..e7718eef87ad 100644
--- a/src/Symfony/Component/BrowserKit/Tests/RequestTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/RequestTest.php
@@ -30,25 +30,25 @@ public function testGetMethod()
 
     public function testGetParameters()
     {
-        $request = new Request('http://www.example.com/', 'get', array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $request->getParameters(), '->getParameters() returns the parameters of the request');
+        $request = new Request('http://www.example.com/', 'get', ['foo' => 'bar']);
+        $this->assertEquals(['foo' => 'bar'], $request->getParameters(), '->getParameters() returns the parameters of the request');
     }
 
     public function testGetFiles()
     {
-        $request = new Request('http://www.example.com/', 'get', array(), array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $request->getFiles(), '->getFiles() returns the uploaded files of the request');
+        $request = new Request('http://www.example.com/', 'get', [], ['foo' => 'bar']);
+        $this->assertEquals(['foo' => 'bar'], $request->getFiles(), '->getFiles() returns the uploaded files of the request');
     }
 
     public function testGetCookies()
     {
-        $request = new Request('http://www.example.com/', 'get', array(), array(), array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $request->getCookies(), '->getCookies() returns the cookies of the request');
+        $request = new Request('http://www.example.com/', 'get', [], [], ['foo' => 'bar']);
+        $this->assertEquals(['foo' => 'bar'], $request->getCookies(), '->getCookies() returns the cookies of the request');
     }
 
     public function testGetServer()
     {
-        $request = new Request('http://www.example.com/', 'get', array(), array(), array(), array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $request->getServer(), '->getServer() returns the server parameters of the request');
+        $request = new Request('http://www.example.com/', 'get', [], [], [], ['foo' => 'bar']);
+        $this->assertEquals(['foo' => 'bar'], $request->getServer(), '->getServer() returns the server parameters of the request');
     }
 }
diff --git a/src/Symfony/Component/BrowserKit/Tests/ResponseTest.php b/src/Symfony/Component/BrowserKit/Tests/ResponseTest.php
index 0ba4e3b3a71d..56f49aee1946 100644
--- a/src/Symfony/Component/BrowserKit/Tests/ResponseTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/ResponseTest.php
@@ -30,40 +30,40 @@ public function testGetStatus()
 
     public function testGetHeaders()
     {
-        $response = new Response('foo', 200, array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $response->getHeaders(), '->getHeaders() returns the headers of the response');
+        $response = new Response('foo', 200, ['foo' => 'bar']);
+        $this->assertEquals(['foo' => 'bar'], $response->getHeaders(), '->getHeaders() returns the headers of the response');
     }
 
     public function testGetHeader()
     {
-        $response = new Response('foo', 200, array(
+        $response = new Response('foo', 200, [
             'Content-Type' => 'text/html',
-            'Set-Cookie' => array('foo=bar', 'bar=foo'),
-        ));
+            'Set-Cookie' => ['foo=bar', 'bar=foo'],
+        ]);
 
         $this->assertEquals('text/html', $response->getHeader('Content-Type'), '->getHeader() returns a header of the response');
         $this->assertEquals('text/html', $response->getHeader('content-type'), '->getHeader() returns a header of the response');
         $this->assertEquals('text/html', $response->getHeader('content_type'), '->getHeader() returns a header of the response');
         $this->assertEquals('foo=bar', $response->getHeader('Set-Cookie'), '->getHeader() returns the first header value');
-        $this->assertEquals(array('foo=bar', 'bar=foo'), $response->getHeader('Set-Cookie', false), '->getHeader() returns all header values if first is false');
+        $this->assertEquals(['foo=bar', 'bar=foo'], $response->getHeader('Set-Cookie', false), '->getHeader() returns all header values if first is false');
 
         $this->assertNull($response->getHeader('foo'), '->getHeader() returns null if the header is not defined');
-        $this->assert
B41A
Equals(array(), $response->getHeader('foo', false), '->getHeader() returns an empty array if the header is not defined and first is set to false');
+        $this->assertEquals([], $response->getHeader('foo', false), '->getHeader() returns an empty array if the header is not defined and first is set to false');
     }
 
     public function testMagicToString()
     {
-        $response = new Response('foo', 304, array('foo' => 'bar'));
+        $response = new Response('foo', 304, ['foo' => 'bar']);
 
         $this->assertEquals("foo: bar\n\nfoo", $response->__toString(), '->__toString() returns the headers and the content as a string');
     }
 
     public function testMagicToStringWithMultipleSetCookieHeader()
     {
-        $headers = array(
+        $headers = [
             'content-type' => 'text/html; charset=utf-8',
-            'set-cookie' => array('foo=bar', 'bar=foo'),
-        );
+            'set-cookie' => ['foo=bar', 'bar=foo'],
+        ];
 
         $expected = 'content-type: text/html; charset=utf-8'."\n";
         $expected .= 'set-cookie: foo=bar'."\n";
diff --git a/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php b/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
index 6ea4ce7acb3c..099c97a4da9d 100644
--- a/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
@@ -59,9 +59,9 @@ function ($key, $value, $isHit) use ($defaultLifetime) {
         $getId = function ($key) { return $this->getId((string) $key); };
         $this->mergeByLifetime = \Closure::bind(
             function ($deferred, $namespace, &$expiredIds) use ($getId) {
-                $byLifetime = array();
+                $byLifetime = [];
                 $now = time();
-                $expiredIds = array();
+                $expiredIds = [];
 
                 foreach ($deferred as $key => $item) {
                     if (null === $item->expiry) {
@@ -123,10 +123,10 @@ public static function createSystemCache($namespace, $defaultLifetime, $version,
             $apcu->setLogger($logger);
         }
 
-        return new ChainAdapter(array($apcu, $fs));
+        return new ChainAdapter([$apcu, $fs]);
     }
 
-    public static function createConnection($dsn, array $options = array())
+    public static function createConnection($dsn, array $options = [])
     {
         if (!\is_string($dsn)) {
             throw new InvalidArgumentException(sprintf('The %s() method expect argument #1 to be string, %s given.', __METHOD__, \gettype($dsn)));
@@ -156,11 +156,11 @@ public function getItem($key)
         $value = null;
 
         try {
-            foreach ($this->doFetch(array($id)) as $value) {
+            foreach ($this->doFetch([$id]) as $value) {
                 $isHit = true;
             }
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch key "{key}"', array('key' => $key, 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to fetch key "{key}"', ['key' => $key, 'exception' => $e]);
         }
 
         return $f($key, $value, $isHit);
@@ -169,12 +169,12 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         if ($this->deferred) {
             $this->commit();
         }
-        $ids = array();
+        $ids = [];
 
         foreach ($keys as $key) {
             $ids[] = $this->getId($key);
@@ -182,8 +182,8 @@ public function getItems(array $keys = array())
         try {
             $items = $this->doFetch($ids);
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch requested items', array('keys' => $keys, 'exception' => $e));
-            $items = array();
+            CacheItem::log($this->logger, 'Failed to fetch requested items', ['keys' => $keys, 'exception' => $e]);
+            $items = [];
         }
         $ids = array_combine($ids, $keys);
 
@@ -224,7 +224,7 @@ public function commit()
         $ok = true;
         $byLifetime = $this->mergeByLifetime;
         $byLifetime = $byLifetime($this->deferred, $this->namespace, $expiredIds);
-        $retry = $this->deferred = array();
+        $retry = $this->deferred = [];
 
         if ($expiredIds) {
             $this->doDelete($expiredIds);
@@ -234,7 +234,7 @@ public function commit()
                 $e = $this->doSave($values, $lifetime);
             } catch (\Exception $e) {
             }
-            if (true === $e || array() === $e) {
+            if (true === $e || [] === $e) {
                 continue;
             }
             if (\is_array($e) || 1 === \count($values)) {
@@ -242,7 +242,7 @@ public function commit()
                     $ok = false;
                     $v = $values[$id];
                     $type = \is_object($v) ? \get_class($v) : \gettype($v);
-                    CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => substr($id, \strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null));
+                    CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', ['key' => substr($id, \strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null]);
                 }
             } else {
                 foreach ($values as $id => $v) {
@@ -256,15 +256,15 @@ public function commit()
             foreach ($ids as $id) {
                 try {
                     $v = $byLifetime[$lifetime][$id];
-                    $e = $this->doSave(array($id => $v), $lifetime);
+                    $e = $this->doSave([$id => $v], $lifetime);
                 } catch (\Exception $e) {
                 }
-                if (true === $e || array() === $e) {
+                if (true === $e || [] === $e) {
                     continue;
                 }
                 $ok = false;
                 $type = \is_object($v) ? \get_class($v) : \gettype($v);
-                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => substr($id, \strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null));
+                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', ['key' => substr($id, \strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null]);
             }
         }
 
@@ -292,7 +292,7 @@ private function generateItems($items, &$keys)
                 yield $key => $f($key, $value, true);
             }
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch requested items', array('keys' => array_values($keys), 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to fetch requested items', ['keys' => array_values($keys), 'exception' => $e]);
         }
 
         foreach ($keys as $key) {
diff --git a/src/Symfony/Component/Cache/Adapter/AdapterInterface.php b/src/Symfony/Component/Cache/Adapter/AdapterInterface.php
index 41222c1ab57c..85fe07684fb3 100644
--- a/src/Symfony/Component/Cache/Adapter/AdapterInterface.php
+++ b/src/Symfony/Component/Cache/Adapter/AdapterInterface.php
@@ -33,5 +33,5 @@ public function getItem($key);
      *
      * @return \Traversable|CacheItem[]
      */
-    public function getItems(array $keys = array());
+    public function getItems(array $keys = []);
 }
diff --git a/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php b/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
index 9c4332058c70..858a47e9ab1a 100644
--- a/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
@@ -66,7 +66,7 @@ public function getItem($key)
                 $isHit = false;
             }
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to unserialize key "{key}"', array('key' => $key, 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to unserialize key "{key}"', ['key' => $key, 'exception' => $e]);
             $this->values[$key] = $value = null;
             $isHit = false;
         }
@@ -78,7 +78,7 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         foreach ($keys as $key) {
             CacheItem::validateKey($key);
@@ -122,7 +122,7 @@ public function save(CacheItemInterface $item)
                 $value = serialize($value);
             } catch (\Exception $e) {
                 $type = \is_object($value) ? \get_class($value) : \gettype($value);
-                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => $key, 'type' => $type, 'exception' => $e));
+                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', ['key' => $key, 'type' => $type, 'exception' => $e]);
 
                 return false;
             }
diff --git a/src/Symfony/Component/Cache/Adapter/ChainAdapter.php b/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
index 72ff4c19fb50..1f4d319e4f9a 100644
--- a/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
@@ -28,7 +28,7 @@
  */
 class ChainAdapter implements AdapterInterface, PruneableInterface, ResettableInterface
 {
-    private $adapters = array();
+    private $adapters = [];
     private $adapterCount;
     private $syncItem;
 
@@ -81,7 +81,7 @@ function ($sourceItem, $item) use ($defaultLifetime) {
     public function getItem($key)
     {
         $syncItem = $this->syncItem;
-        $misses = array();
+        $misses = [];
 
         foreach ($this->adapters as $i => $adapter) {
             $item = $adapter->getItem($key);
@@ -103,15 +103,15 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         return $this->generateItems($this->adapters[0]->getItems($keys), 0);
     }
 
     private function generateItems($items, $adapterIndex)
     {
-        $missing = array();
-        $misses = array();
+        $missing = [];
+        $misses = [];
         $nextAdapterIndex = $adapterIndex + 1;
         $nextAdapter = isset($this->adapters[$nextAdapterIndex]) ? $this->adapters[$nextAdapterIndex] : null;
 
diff --git a/src/Symfony/Component/Cache/Adapter/NullAdapter.php b/src/Symfony/Component/Cache/Adapter/NullAdapter.php
index f58f81e5b896..c81a1cd64661 100644
--- a/src/Symfony/Component/Cache/Adapter/NullAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/NullAdapter.php
@@ -49,7 +49,7 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         return $this->generateItems($keys);
     }
diff --git a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
index c3fc45b672ab..62c4d175b15c 100644
--- a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
@@ -46,7 +46,7 @@ class PdoAdapter extends AbstractAdapter implements PruneableInterface
      * @throws InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
      * @throws InvalidArgumentException When namespace contains invalid characters
      */
-    public function __construct($connOrDsn, $namespace = '', $defaultLifetime = 0, array $options = array())
+    public function __construct($connOrDsn, $namespace = '', $defaultLifetime = 0, array $options = [])
     {
         $this->init($connOrDsn, $namespace, $defaultLifetime, $options);
     }
diff --git a/src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php b/src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php
index 4bd0da8c4396..42a414209938 100644
--- a/src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php
@@ -120,7 +120,7 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         foreach ($keys as $key) {
             if (!\is_string($key)) {
@@ -170,7 +170,7 @@ public function deleteItem($key)
     public function deleteItems(array $keys)
     {
         $deleted = true;
-        $fallbackKeys = array();
+        $fallbackKeys = [];
 
         foreach ($keys as $key) {
             if (!\is_string($key)) {
@@ -232,7 +232,7 @@ public function commit()
     private function generateItems(array $keys)
     {
         $f = $this->createCacheItem;
-        $fallbackKeys = array();
+        $fallbackKeys = [];
 
         foreach ($keys as $key) {
             if (isset($this->values[$key])) {
@@ -272,10 +272,10 @@ public static function throwOnRequiredClass($class)
     {
         $e = new \ReflectionException("Class $class does not exist");
         $trace = $e->getTrace();
-        $autoloadFrame = array(
+        $autoloadFrame = [
             'function' => 'spl_autoload_call',
-            'args' => array($class),
-        );
+            'args' => [$class],
+        ];
         $i = 1 + array_search($autoloadFrame, $trace, true);
 
         if (isset($trace[$i]['function']) && !isset($trace[$i]['class'])) {
diff --git a/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php b/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
index 7682c7247472..906052360915 100644
--- a/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
@@ -73,7 +73,7 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         if ($this->namespaceLen) {
             foreach ($keys as $i => $key) {
diff --git a/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php b/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
index 62f815e0171a..d453e271aef4 100644
--- a/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
@@ -27,13 +27,13 @@ class TagAwareAdapter implements TagAwareAdapterInterface, PruneableInterface, R
 
     use ProxyTrait;
 
-    private $deferred = array();
+    private $deferred = [];
     private $createCacheItem;
     private $setCacheItemTags;
     private $getTagsByKey;
     private $invalidateTags;
     private $tags;
-    private $knownTagVersions = array();
+    private $knownTagVersions = [];
     private $knownTagVersionsTtl;
 
     public function __construct(AdapterInterface $itemsPool, AdapterInterface $tagsPool = null, $knownTagVersionsTtl = 0.15)
@@ -78,7 +78,7 @@ function (CacheItem $item, $key, array &$itemTags) {
         );
         $this->getTagsByKey = \Closure::bind(
             function ($deferred) {
-                $tagsByKey = array();
+                $tagsByKey = [];
                 foreach ($deferred as $key => $item) {
                     $tagsByKey[$key] = $item->tags;
                 }
@@ -109,8 +109,8 @@ function (AdapterInterface $tagsAdapter, array $tags) {
     public function invalidateTags(array $tags)
     {
         $ok = true;
-        $tagsByKey = array();
-        $invalidatedTags = array();
+        $tagsByKey = [];
+        $invalidatedTags = [];
         foreach ($tags as $tag) {
             CacheItem::validateKey($tag);
             $invalidatedTags[$tag] = 0;
@@ -127,7 +127,7 @@ public function invalidateTags(array $tags)
 
             $f = $this->getTagsByKey;
             $tagsByKey = $f($items);
-            $this->deferred = array();
+            $this->deferred = [];
         }
 
         $tagVersions = $this->getTagVersions($tagsByKey, $invalidatedTags);
@@ -161,7 +161,7 @@ public function hasItem($key)
             return true;
         }
 
-        foreach ($this->getTagVersions(array($itemTags)) as $tag => $version) {
+        foreach ($this->getTagVersions([$itemTags]) as $tag => $version) {
             if ($itemTags[$tag] !== $version && 1 !== $itemTags[$tag] - $version) {
                 return false;
             }
@@ -175,7 +175,7 @@ public function hasItem($key)
      */
     public function getItem($key)
     {
-        foreach ($this->getItems(array($key)) as $item) {
+        foreach ($this->getItems([$key]) as $item) {
             return $item;
         }
     }
@@ -183,12 +183,12 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         if ($this->deferred) {
             $this->commit();
         }
-        $tagKeys = array();
+        $tagKeys = [];
 
         foreach ($keys as $key) {
             if ('' !== $key && \is_string($key)) {
@@ -213,7 +213,7 @@ public function getItems(array $keys = array())
      */
     public function clear()
     {
-        $this->deferred = array();
+        $this->deferred = [];
 
         return $this->pool->clear();
     }
@@ -223,7 +223,7 @@ public function clear()
      */
     public function deleteItem($key)
     {
-        return $this->deleteItems(array($key));
+        return $this->deleteItems([$key]);
     }
 
     /**
@@ -271,7 +271,7 @@ public function saveDeferred(CacheItemInterface $item)
      */
     public function commit()
     {
-        return $this->invalidateTags(array());
+        return $this->invalidateTags([]);
     }
 
     public function __destruct()
@@ -281,7 +281,7 @@ public function __destruct()
 
     private function generateItems($items, array $tagKeys)
     {
-        $bufferedItems = $itemTags = array();
+        $bufferedItems = $itemTags = [];
         $f = $this->setCacheItemTags;
 
         foreach ($items as $key => $item) {
@@ -295,7 +295,7 @@ private function generateItems($items, array $tagKeys)
             }
 
             unset($tagKeys[$key]);
-            $itemTags[$key] = $item->get() ?: array();
+            $itemTags[$key] = $item->get() ?: [];
 
             if (!$tagKeys) {
                 $tagVersions = $this->getTagVersions($itemTags);
@@ -318,7 +318,7 @@ private function generateItems($items, array $tagKeys)
         }
     }
 
-    private function getTagVersions(array $tagsByKey, array &$invalidatedTags = array())
+    private function getTagVersions(array $tagsByKey, array &$invalidatedTags = [])
     {
         $tagVersions = $invalidatedTags;
 
@@ -327,7 +327,7 @@ private function getTagVersions(array $tagsByKey, array &$invalidatedTags = arra
         }
 
         if (!$tagVersions) {
-            return array();
+            return [];
         }
 
         if (!$fetchTagVersions = 1 !== \func_num_args()) {
@@ -341,7 +341,7 @@ private function getTagVersions(array $tagsByKey, array &$invalidatedTags = arra
         }
 
         $now = microtime(true);
-        $tags = array();
+        $tags = [];
         foreach ($tagVersions as $tag => $version) {
             $tags[$tag.static::TAGS_PREFIX] = $tag;
             if ($fetchTagVersions || !isset($this->knownTagVersions[$tag])) {
@@ -366,7 +366,7 @@ private function getTagVersions(array $tagsByKey, array &$invalidatedTags = arra
             if (isset($invalidatedTags[$tag])) {
                 $invalidatedTags[$tag] = $version->set(++$tagVersions[$tag]);
             }
-            $this->knownTagVersions[$tag] = array($now, $tagVersions[$tag]);
+            $this->knownTagVersions[$tag] = [$now, $tagVersions[$tag]];
         }
 
         return $tagVersions;
diff --git a/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php b/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
index 98d0e526933b..4aed2d7181f8 100644
--- a/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
@@ -25,7 +25,7 @@
 class TraceableAdapter implements AdapterInterface, PruneableInterface, ResettableInterface
 {
     protected $pool;
-    private $calls = array();
+    private $calls = [];
 
     public function __construct(AdapterInterface $pool)
     {
@@ -107,7 +107,7 @@ public function saveDeferred(CacheItemInterface $item)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         $event = $this->start(__FUNCTION__);
         try {
@@ -116,7 +116,7 @@ public function getItems(array $keys = array())
             $event->end = microtime(true);
         }
         $f = function () use ($result, $event) {
-            $event->result = array();
+            $event->result = [];
             foreach ($result as $key => $item) {
                 if ($event->result[$key] = $item->isHit()) {
                     ++$event->hits;
@@ -209,7 +209,7 @@ public function getCalls()
 
     public function clearCalls()
     {
-        $this->calls = array();
+        $this->calls = [];
     }
 
     protected function start($name)
diff --git a/src/Symfony/Component/Cache/CacheItem.php b/src/Symfony/Component/Cache/CacheItem.php
index 58ecad82d2d4..4ab5d1a26420 100644
--- a/src/Symfony/Component/Cache/CacheItem.php
+++ b/src/Symfony/Component/Cache/CacheItem.php
@@ -25,8 +25,8 @@ final class CacheItem implements CacheItemInterface
     protected $isHit = false;
     protected $expiry;
     protected $defaultLifetime;
-    protected $tags = array();
-    protected $prevTags = array();
+    protected $tags = [];
+    protected $prevTags = [];
     protected $innerItem;
     protected $poolHash;
 
@@ -110,7 +110,7 @@ public function expiresAfter($time)
     public function tag($tags)
     {
         if (!\is_array($tags)) {
-            $tags = array($tags);
+            $tags = [$tags];
         }
         foreach ($tags as $tag) {
             if (!\is_string($tag)) {
@@ -170,12 +170,12 @@ public static function validateKey($key)
      *
      * @internal
      */
-    public static function log(LoggerInterface $logger = null, $message, $context = array())
+    public static function log(LoggerInterface $logger = null, $message, $context = [])
     {
         if ($logger) {
             $logger->warning($message, $context);
         } else {
-            $replace = array();
+            $replace = [];
             foreach ($context as $k => $v) {
                 if (is_scalar($v)) {
                     $replace['{'.$k.'}'] = $v;
diff --git a/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php b/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
index ac5c36d2fd83..a2f826d70562 100644
--- a/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
+++ b/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
@@ -27,7 +27,7 @@ class CacheDataCollector extends DataCollector implements LateDataCollectorInter
     /**
      * @var TraceableAdapter[]
      */
-    private $instances = array();
+    private $instances = [];
 
     /**
      * @param string           $name
@@ -43,8 +43,8 @@ public function addInstance($name, TraceableAdapter $instance)
      */
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
-        $empty = array('calls' => array(), 'config' => array(), 'options' => array(), 'statistics' => array());
-        $this->data = array('instances' => $empty, 'total' => $empty);
+        $empty = ['calls' => [], 'config' => [], 'options' => [], 'statistics' => []];
+        $this->data = ['instances' => $empty, 'total' => $empty];
         foreach ($this->instances as $name => $instance) {
             $this->data['instances']['calls'][$name] = $instance->getCalls();
         }
@@ -55,7 +55,7 @@ public function collect(Request $request, Response $response, \Exception $except
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
         foreach ($this->instances as $instance) {
             $instance->clearCalls();
         }
@@ -109,9 +109,9 @@ public function getCalls()
      */
     private function calculateStatistics()
     {
-        $statistics = array();
+        $statistics = [];
         foreach ($this->data['instances']['calls'] as $name => $calls) {
-            $statistics[$name] = array(
+            $statistics[$name] = [
                 'calls' => 0,
                 'time' => 0,
                 'reads' => 0,
@@ -119,7 +119,7 @@ private function calculateStatistics()
                 'deletes' => 0,
                 'hits' => 0,
                 'misses' => 0,
-            );
+            ];
             /** @var TraceableAdapterEvent $call */
             foreach ($calls as $call) {
                 ++$statistics[$name]['calls'];
@@ -164,7 +164,7 @@ private function calculateStatistics()
     private function calculateTotalStatistics()
     {
         $statistics = $this->getStatistics();
-        $totals = array(
+        $totals = [
             'calls' => 0,
             'time' => 0,
             'reads' => 0,
@@ -172,7 +172,7 @@ private function calculateTotalStatistics()
             'deletes' => 0,
             'hits' => 0,
             'misses' => 0,
-        );
+        ];
         foreach ($statistics as $name => $values) {
             foreach ($totals as $key => $value) {
                 $totals[$key] += $statistics[$name][$key];
diff --git a/src/Symfony/Component/Cache/Simple/AbstractCache.php b/src/Symfony/Component/Cache/Simple/AbstractCache.php
index f29eb69c9b8e..0d715e48d223 100644
--- a/src/Symfony/Component/Cache/Simple/AbstractCache.php
+++ b/src/Symfony/Component/Cache/Simple/AbstractCache.php
@@ -52,11 +52,11 @@ public function get($key, $default = null)
         $id = $this->getId($key);
 
         try {
-            foreach ($this->doFetch(array($id)) as $value) {
+            foreach ($this->doFetch([$id]) as $value) {
                 return $value;
             }
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch key "{key}"', array('key' => $key, 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to fetch key "{key}"', ['key' => $key, 'exception' => $e]);
         }
 
         return $default;
@@ -69,7 +69,7 @@ public function set($key, $value, $ttl = null)
     {
         CacheItem::validateKey($key);
 
-        return $this->setMultiple(array($key => $value), $ttl);
+        return $this->setMultiple([$key => $value], $ttl);
     }
 
     /**
@@ -82,7 +82,7 @@ public function getMultiple($keys, $default = null)
         } elseif (!\is_array($keys)) {
             throw new InvalidArgumentException(sprintf('Cache keys must be array or Traversable, "%s" given', \is_object($keys) ? \get_class($keys) : \gettype($keys)));
         }
-        $ids = array();
+        $ids = [];
 
         foreach ($keys as $key) {
             $ids[] = $this->getId($key);
@@ -90,8 +90,8 @@ public function getMultiple($keys, $default = null)
         try {
             $values = $this->doFetch($ids);
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch requested values', array('keys' => $keys, 'exception' => $e));
-            $values = array();
+            CacheItem::log($this->logger, 'Failed to fetch requested values', ['keys' => $keys, 'exception' => $e]);
+            $values = [];
         }
         $ids = array_combine($ids, $keys);
 
@@ -106,7 +106,7 @@ public function setMultiple($values, $ttl = null)
         if (!\is_array($values) && !$values instanceof \Traversable) {
             throw new InvalidArgumentException(sprintf('Cache values must be array or Traversable, "%s" given', \is_object($values) ? \get_class($values) : \gettype($values)));
         }
-        $valuesById = array();
+        $valuesById = [];
 
         foreach ($values as $key => $value) {
             if (\is_int($key)) {
@@ -122,14 +122,14 @@ public function setMultiple($values, $ttl = null)
             $e = $this->doSave($valuesById, $ttl);
         } catch (\Exception $e) {
         }
-        if (true === $e || array() === $e) {
+        if (true === $e || [] === $e) {
             return true;
         }
-        $keys = array();
+        $keys = [];
         foreach (\is_array($e) ? $e : array_keys($valuesById) as $id) {
             $keys[] = substr($id, \strlen($this->namespace));
         }
-        CacheItem::log($this->logger, 'Failed to save values', array('keys' => $keys, 'exception' => $e instanceof \Exception ? $e : null));
+        CacheItem::log($this->logger, 'Failed to save values', ['keys' => $keys, 'exception' => $e instanceof \Exception ? $e : null]);
 
         return false;
     }
@@ -175,7 +175,7 @@ private function generateValues($values, &$keys, $default)
                 yield $key => $value;
             }
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch requested values', array('keys' => array_values($keys), 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to fetch requested values', ['keys' => array_values($keys), 'exception' => $e]);
         }
 
         foreach ($keys as $key) {
diff --git a/src/Symfony/Component/Cache/Simple/ArrayCache.php b/src/Symfony/Component/Cache/Simple/ArrayCache.php
index ca45c93a55a1..9c8f6d8e3c9e 100644
--- a/src/Symfony/Component/Cache/Simple/ArrayCache.php
+++ b/src/Symfony/Component/Cache/Simple/ArrayCache.php
@@ -45,7 +45,7 @@ public function __construct($defaultLifetime = 0, $storeSerialized = true)
      */
     public function get($key, $default = null)
     {
-        foreach ($this->getMultiple(array($key), $default) as $v) {
+        foreach ($this->getMultiple([$key], $default) as $v) {
             return $v;
         }
     }
@@ -89,7 +89,7 @@ public function set($key, $value, $ttl = null)
     {
         CacheItem::validateKey($key);
 
-        return $this->setMultiple(array($key => $value), $ttl);
+        return $this->setMultiple([$key => $value], $ttl);
     }
 
     /**
@@ -100,7 +100,7 @@ public function setMultiple($values, $ttl = null)
         if (!\is_array($values) && !$values instanceof \Traversable) {
             throw new InvalidArgumentException(sprintf('Cache values must be array or Traversable, "%s" given', \is_object($values) ? \get_class($values) : \gettype($values)));
         }
-        $valuesArray = array();
+        $valuesArray = [];
 
         foreach ($values as $key => $value) {
             \is_int($key) || CacheItem::validateKey($key);
@@ -115,7 +115,7 @@ public function setMultiple($values, $ttl = null)
                     $valuesArray[$key] = serialize($value);
                 } catch (\Exception $e) {
                     $type = \is_object($value) ? \get_class($value) : \gettype($value);
-                    CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => $key, 'type' => $type, 'exception' => $e));
+                    CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', ['key' => $key, 'type' => $type, 'exception' => $e]);
 
                     return false;
                 }
diff --git a/src/Symfony/Component/Cache/Simple/ChainCache.php b/src/Symfony/Component/Cache/Simple/ChainCache.php
index 47ac9c62c313..2e6c7277d78e 100644
--- a/src/Symfony/Component/Cache/Simple/ChainCache.php
+++ b/src/Symfony/Component/Cache/Simple/ChainCache.php
@@ -27,7 +27,7 @@
 class ChainCache implements CacheInterface, PruneableInterface, ResettableInterface
 {
     private $miss;
-    private $caches = array();
+    private $caches = [];
     private $defaultLifetime;
     private $cacheCount;
 
@@ -87,7 +87,7 @@ public function getMultiple($keys, $default = null)
 
     private function generateItems($values, $cacheIndex, $miss, $default)
     {
-        $missing = array();
+        $missing = [];
         $nextCacheIndex = $cacheIndex + 1;
         $nextCache = isset($this->caches[$nextCacheIndex]) ? $this->caches[$nextCacheIndex] : null;
 
@@ -201,7 +201,7 @@ public function setMultiple($values, $ttl = null)
         if ($values instanceof \Traversable) {
             $valuesIterator = $values;
             $values = function () use ($valuesIterator, &$values) {
-                $generatedValues = array();
+                $generatedValues = [];
 
                 foreach ($valuesIterator as $key => $value) {
                     yield $key => $value;
diff --git a/src/Symfony/Component/Cache/Simple/PdoCache.php b/src/Symfony/Component/Cache/Simple/PdoCache.php
index 931a3b1ff7db..4faf10edf5c0 100644
--- a/src/Symfony/Component/Cache/Simple/PdoCache.php
+++ b/src/Symfony/Component/Cache/Simple/PdoCache.php
@@ -44,7 +44,7 @@ class PdoCache extends AbstractCache implements PruneableInterface
      * @throws InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
      * @throws InvalidArgumentException When namespace contains invalid characters
      */
-    public function __construct($connOrDsn, $namespace = '', $defaultLifetime = 0, array $options = array())
+    public function __construct($connOrDsn, $namespace = '', $defaultLifetime = 0, array $options = [])
     {
         $this->init($connOrDsn, $namespace, $defaultLifetime, $options);
     }
diff --git a/src/Symfony/Component/Cache/Simple/PhpArrayCache.php b/src/Symfony/Component/Cache/Simple/PhpArrayCache.php
index 728d2bd7e5b4..607555e93b66 100644
--- a/src/Symfony/Component/Cache/Simple/PhpArrayCache.php
+++ b/src/Symfony/Component/Cache/Simple/PhpArrayCache.php
@@ -154,7 +154,7 @@ public function deleteMultiple($keys)
         }
 
         $deleted = true;
-        $fallbackKeys = array();
+        $fallbackKeys = [];
 
         foreach ($keys as $key) {
             if (!\is_string($key)) {
@@ -203,7 +203,7 @@ public function setMultiple($values, $ttl = null)
         }
 
         $saved = true;
-        $fallbackValues = array();
+        $fallbackValues = [];
 
         foreach ($values as $key => $value) {
             if (!\is_string($key) && !\is_int($key)) {
@@ -226,7 +226,7 @@ public function setMultiple($values, $ttl = null)
 
     private function generateItems(array $keys, $default)
     {
-        $fallbackKeys = array();
+        $fallbackKeys = [];
 
         foreach ($keys as $key) {
             if (isset($this->values[$key])) {
diff --git a/src/Symfony/Component/Cache/Simple/Psr6Cache.php b/src/Symfony/Component/Cache/Simple/Psr6Cache.php
index 853d46e26b8e..85d75becbe58 100644
--- a/src/Symfony/Component/Cache/Simple/Psr6Cache.php
+++ b/src/Symfony/Component/Cache/Simple/Psr6Cache.php
@@ -145,7 +145,7 @@ public function getMultiple($keys, $default = null)
         } catch (Psr6CacheException $e) {
             throw new InvalidArgumentException($e->getMessage(), $e->getCode(), $e);
         }
-        $values = array();
+        $values = [];
 
         foreach ($items as $key => $item) {
             $values[$key] = $item->isHit() ? $item->get() : $default;
@@ -163,7 +163,7 @@ public function setMultiple($values, $ttl = null)
         if (!$valuesIsArray && !$values instanceof \Traversable) {
             throw new InvalidArgumentException(sprintf('Cache values must be array or Traversable, "%s" given', \is_object($values) ? \get_class($values) : \gettype($values)));
         }
-        $items = array();
+        $items = [];
 
         try {
             if (null !== $f = $this->createCacheItem) {
@@ -172,7 +172,7 @@ public function setMultiple($values, $ttl = null)
                     $items[$key] = $f($key, $value, true);
                 }
             } elseif ($valuesIsArray) {
-                $items = array();
+                $items = [];
                 foreach ($values as $key => $value) {
                     $items[] = (string) $key;
                 }
diff --git a/src/Symfony/Component/Cache/Simple/TraceableCache.php b/src/Symfony/Component/Cache/Simple/TraceableCache.php
index 181934eff501..61b22963eb32 100644
--- a/src/Symfony/Component/Cache/Simple/TraceableCache.php
+++ b/src/Symfony/Component/Cache/Simple/TraceableCache.php
@@ -24,7 +24,7 @@ class TraceableCache implements CacheInterface, PruneableInterface, ResettableIn
 {
     private $pool;
     private $miss;
-    private $calls = array();
+    private $calls = [];
 
     public function __construct(CacheInterface $pool)
     {
@@ -99,7 +99,7 @@ public function set($key, $value, $ttl = null)
     public function setMultiple($values, $ttl = null)
     {
         $event = $this->start(__FUNCTION__);
-        $event->result['keys'] = array();
+        $event->result['keys'] = [];
 
         if ($values instanceof \Traversable) {
             $values = function () use ($values, $event) {
@@ -133,7 +133,7 @@ public function getMultiple($keys, $default = null)
             $event->end = microtime(true);
         }
         $f = function () use ($result, $event, $miss, $default) {
-            $event->result = array();
+            $event->result = [];
             foreach ($result as $key => $value) {
                 if ($event->result[$key] = $miss !== $value) {
                     ++$event->hits;
@@ -216,7 +216,7 @@ public function getCalls()
         try {
             return $this->calls;
         } finally {
-            $this->calls = array();
+            $this->calls = [];
         }
     }
 
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/AbstractRedisAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/AbstractRedisAdapterTest.php
index 147dfcd15346..5fcec9a26311 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/AbstractRedisAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/AbstractRedisAdapterTest.php
@@ -15,11 +15,11 @@
 
 abstract class AbstractRedisAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testExpiration' => 'Testing expiration slows down the test suite',
         'testHasItemReturnsFalseWhenDeferredItemIsExpired' => 'Testing expiration slows down the test suite',
         'testDefaultLifeTime' => 'Testing expiration slows down the test suite',
-    );
+    ];
 
     protected static $redis;
 
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php b/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
index d3175adc77bb..482751f620c6 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
@@ -85,11 +85,11 @@ public function testNotUnserializable()
         $item = $cache->getItem('foo');
         $this->assertFalse($item->isHit());
 
-        foreach ($cache->getItems(array('foo')) as $item) {
+        foreach ($cache->getItems(['foo']) as $item) {
         }
         $cache->save($item->set(new NotUnserializable()));
 
-        foreach ($cache->getItems(array('foo')) as $item) {
+        foreach ($cache->getItems(['foo']) as $item) {
         }
         $this->assertFalse($item->isHit());
     }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php
index a17b42bce498..5cca73f56189 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php
@@ -16,11 +16,11 @@
 
 class ApcuAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testExpiration' => 'Testing expiration slows down the test suite',
         'testHasItemReturnsFalseWhenDeferredItemIsExpired' => 'Testing expiration slows down the test suite',
         'testDefaultLifeTime' => 'Testing expiration slows down the test suite',
-    );
+    ];
 
     public function createCachePool($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php
index 725d79015082..e6adc9d01231 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php
@@ -18,10 +18,10 @@
  */
 class ArrayAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testDeferredSaveWithoutCommit' => 'Assumes a shared cache which ArrayAdapter is not.',
         'testSaveWithoutExpire' => 'Assumes a shared cache which ArrayAdapter is not.',
-    );
+    ];
 
     public function createCachePool($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
index a47058f513a4..010f68b973e3 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
@@ -26,7 +26,7 @@ class ChainAdapterTest extends AdapterTestCase
 {
     public function createCachePool($defaultLifetime = 0)
     {
-        return new ChainAdapter(array(new ArrayAdapter($defaultLifetime), new ExternalAdapter(), new FilesystemAdapter('', $defaultLifetime)), $defaultLifetime);
+        return new ChainAdapter([new ArrayAdapter($defaultLifetime), new ExternalAdapter(), new FilesystemAdapter('', $defaultLifetime)], $defaultLifetime);
     }
 
     /**
@@ -35,7 +35,7 @@ public function createCachePool($defaultLifetime = 0)
      */
     public function testEmptyAdaptersException()
     {
-        new ChainAdapter(array());
+        new ChainAdapter([]);
     }
 
     /**
@@ -44,7 +44,7 @@ public function testEmptyAdaptersException()
      */
     public function testInvalidAdapterException()
     {
-        new ChainAdapter(array(new \stdClass()));
+        new ChainAdapter([new \stdClass()]);
     }
 
     public function testPrune()
@@ -53,18 +53,18 @@ public function testPrune()
             $this->markTestSkipped($this->skippedTests[__FUNCTION__]);
         }
 
-        $cache = new ChainAdapter(array(
+        $cache = new ChainAdapter([
             $this->getPruneableMock(),
             $this->getNonPruneableMock(),
             $this->getPruneableMock(),
-        ));
+        ]);
         $this->assertTrue($cache->prune());
 
-        $cache = new ChainAdapter(array(
+        $cache = new ChainAdapter([
             $this->getPruneableMock(),
             $this->getFailingPruneableMock(),
             $this->getPruneableMock(),
-        ));
+        ]);
         $this->assertFalse($cache->prune());
     }
 
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/DoctrineAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/DoctrineAdapterTest.php
index 8d4dfe285821..8f520cb59a61 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/DoctrineAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/DoctrineAdapterTest.php
@@ -19,11 +19,11 @@
  */
 class DoctrineAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testDeferredSaveWithoutCommit' => 'Assumes a shared cache which ArrayCache is not.',
         'testSaveWithoutExpire' => 'Assumes a shared cache which ArrayCache is not.',
         'testNotUnserializable' => 'ArrayCache does not use serialize/unserialize',
-    );
+    ];
 
     public function createCachePool($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/MaxIdLengthAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/MaxIdLengthAdapterTest.php
index 5e301f250986..8bea26810c07 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/MaxIdLengthAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/MaxIdLengthAdapterTest.php
@@ -19,15 +19,15 @@ class MaxIdLengthAdapterTest extends TestCase
     public function testLongKey()
     {
         $cache = $this->getMockBuilder(MaxIdLengthAdapter::class)
-            ->setConstructorArgs(array(str_repeat('-', 10)))
-            ->setMethods(array('doHave', 'doFetch', 'doDelete', 'doSave', 'doClear'))
+            ->setConstructorArgs([str_repeat('-', 10)])
+            ->setMethods(['doHave', 'doFetch', 'doDelete', 'doSave', 'doClear'])
             ->getMock();
 
         $cache->expects($this->exactly(2))
             ->method('doHave')
             ->withConsecutive(
-                array($this->equalTo('----------:0GTYWa9n4ed8vqNlOT2iEr:')),
-                array($this->equalTo('----------:---------------------------------------'))
+                [$this->equalTo('----------:0GTYWa9n4ed8vqNlOT2iEr:')],
+                [$this->equalTo('----------:---------------------------------------')]
             );
 
         $cache->hasItem(str_repeat('-', 40));
@@ -37,7 +37,7 @@ public function testLongKey()
     public function testLongKeyVersioning()
     {
         $cache = $this->getMockBuilder(MaxIdLengthAdapter::class)
-            ->setConstructorArgs(array(str_repeat('-', 26)))
+            ->setConstructorArgs([str_repeat('-', 26)])
             ->getMock();
 
         $reflectionClass = new \ReflectionClass(AbstractAdapter::class);
@@ -46,20 +46,20 @@ public function testLongKeyVersioning()
         $reflectionMethod->setAccessible(true);
 
         // No versioning enabled
-        $this->assertEquals('--------------------------:------------', $reflectionMethod->invokeArgs($cache, array(str_repeat('-', 12))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 12)))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 23)))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 40)))));
+        $this->assertEquals('--------------------------:------------', $reflectionMethod->invokeArgs($cache, [str_re
F438
peat('-', 12)]));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 12)])));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 23)])));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 40)])));
 
         $reflectionProperty = $reflectionClass->getProperty('versioningIsEnabled');
         $reflectionProperty->setAccessible(true);
         $reflectionProperty->setValue($cache, true);
 
         // Versioning enabled
-        $this->assertEquals('--------------------------:1:------------', $reflectionMethod->invokeArgs($cache, array(str_repeat('-', 12))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 12)))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 23)))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 40)))));
+        $this->assertEquals('--------------------------:1:------------', $reflectionMethod->invokeArgs($cache, [str_repeat('-', 12)]));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 12)])));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 23)])));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 40)])));
     }
 
     /**
@@ -69,7 +69,7 @@ public function testLongKeyVersioning()
     public function testTooLongNamespace()
     {
         $cache = $this->getMockBuilder(MaxIdLengthAdapter::class)
-            ->setConstructorArgs(array(str_repeat('-', 40)))
+            ->setConstructorArgs([str_repeat('-', 40)])
             ->getMock();
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/MemcachedAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/MemcachedAdapterTest.php
index 1f2f4d40acfa..2a88fea18bbe 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/MemcachedAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/MemcachedAdapterTest.php
@@ -16,10 +16,10 @@
 
 class MemcachedAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testHasItemReturnsFalseWhenDeferredItemIsExpired' => 'Testing expiration slows down the test suite',
         'testDefaultLifeTime' => 'Testing expiration slows down the test suite',
-    );
+    ];
 
     protected static $client;
 
@@ -28,7 +28,7 @@ public static function setupBeforeClass()
         if (!MemcachedAdapter::isSupported()) {
             self::markTestSkipped('Extension memcached >=2.2.0 required.');
         }
-        self::$client = AbstractAdapter::createConnection('memcached://'.getenv('MEMCACHED_HOST'), array('binary_protocol' => false));
+        self::$client = AbstractAdapter::createConnection('memcached://'.getenv('MEMCACHED_HOST'), ['binary_protocol' => false]);
         self::$client->get('foo');
         $code = self::$client->getResultCode();
 
@@ -46,13 +46,13 @@ public function createCachePool($defaultLifetime = 0)
 
     public function testOptions()
     {
-        $client = MemcachedAdapter::createConnection(array(), array(
+        $client = MemcachedAdapter::createConnection([], [
             'libketama_compatible' => false,
             'distribution' => 'modula',
             'compression' => true,
             'serializer' => 'php',
             'hash' => 'md5',
-        ));
+        ]);
 
         $this->assertSame(\Memcached::SERIALIZER_PHP, $client->getOption(\Memcached::OPT_SERIALIZER));
         $this->assertSame(\Memcached::HASH_MD5, $client->getOption(\Memcached::OPT_HASH));
@@ -68,24 +68,24 @@ public function testOptions()
      */
     public function testBadOptions($name, $value)
     {
-        MemcachedAdapter::createConnection(array(), array($name => $value));
+        MemcachedAdapter::createConnection([], [$name => $value]);
     }
 
     public function provideBadOptions()
     {
-        return array(
-            array('foo', 'bar'),
-            array('hash', 'zyx'),
-            array('serializer', 'zyx'),
-            array('distribution', 'zyx'),
-        );
+        return [
+            ['foo', 'bar'],
+            ['hash', 'zyx'],
+            ['serializer', 'zyx'],
+            ['distribution', 'zyx'],
+        ];
     }
 
     public function testDefaultOptions()
     {
         $this->assertTrue(MemcachedAdapter::isSupported());
 
-        $client = MemcachedAdapter::createConnection(array());
+        $client = MemcachedAdapter::createConnection([]);
 
         $this->assertTrue($client->getOption(\Memcached::OPT_COMPRESSION));
         $this->assertSame(1, $client->getOption(\Memcached::OPT_BINARY_PROTOCOL));
@@ -103,7 +103,7 @@ public function testOptionSerializer()
             $this->markTestSkipped('Memcached::HAVE_JSON required');
         }
 
-        new MemcachedAdapter(MemcachedAdapter::createConnection(array(), array('serializer' => 'json')));
+        new MemcachedAdapter(MemcachedAdapter::createConnection([], ['serializer' => 'json']));
     }
 
     /**
@@ -112,54 +112,54 @@ public function testOptionSerializer()
     public function testServersSetting($dsn, $host, $port)
     {
         $client1 = MemcachedAdapter::createConnection($dsn);
-        $client2 = MemcachedAdapter::createConnection(array($dsn));
-        $client3 = MemcachedAdapter::createConnection(array(array($host, $port)));
-        $expect = array(
+        $client2 = MemcachedAdapter::createConnection([$dsn]);
+        $client3 = MemcachedAdapter::createConnection([[$host, $port]]);
+        $expect = [
             'host' => $host,
             'port' => $port,
-        );
+        ];
 
-        $f = function ($s) { return array('host' => $s['host'], 'port' => $s['port']); };
-        $this->assertSame(array($expect), array_map($f, $client1->getServerList()));
-        $this->assertSame(array($expect), array_map($f, $client2->getServerList()));
-        $this->assertSame(array($expect), array_map($f, $client3->getServerList()));
+        $f = function ($s) { return ['host' => $s['host'], 'port' => $s['port']]; };
+        $this->assertSame([$expect], array_map($f, $client1->getServerList()));
+        $this->assertSame([$expect], array_map($f, $client2->getServerList()));
+        $this->assertSame([$expect], array_map($f, $client3->getServerList()));
     }
 
     public function provideServersSetting()
     {
-        yield array(
+        yield [
             'memcached://127.0.0.1/50',
             '127.0.0.1',
             11211,
-        );
-        yield array(
+        ];
+        yield [
             'memcached://localhost:11222?weight=25',
             'localhost',
             11222,
-        );
+        ];
         if (filter_var(ini_get('memcached.use_sasl'), FILTER_VALIDATE_BOOLEAN)) {
-            yield array(
+            yield [
                 'memcached://user:password@127.0.0.1?weight=50',
                 '127.0.0.1',
                 11211,
-            );
+            ];
         }
-        yield array(
+        yield [
             'memcached:///var/run/memcached.sock?weight=25',
             '/var/run/memcached.sock',
             0,
-        );
-        yield array(
+        ];
+        yield [
             'memcached:///var/local/run/memcached.socket?weight=25',
             '/var/local/run/memcached.socket',
             0,
-        );
+        ];
         if (filter_var(ini_get('memcached.use_sasl'), FILTER_VALIDATE_BOOLEAN)) {
-            yield array(
+            yield [
                 'memcached://user:password@/var/local/run/memcached.socket?weight=25',
                 '/var/local/run/memcached.socket',
                 0,
-            );
+            ];
         }
     }
 
@@ -181,16 +181,16 @@ public function provideDsnWithOptions()
             self::markTestSkipped('Extension memcached required.');
         }
 
-        yield array(
+        yield [
             'memcached://localhost:11222?retry_timeout=10',
-            array(\Memcached::OPT_RETRY_TIMEOUT => 8),
-            array(\Memcached::OPT_RETRY_TIMEOUT => 10),
-        );
-        yield array(
+            [\Memcached::OPT_RETRY_TIMEOUT => 8],
+            [\Memcached::OPT_RETRY_TIMEOUT => 10],
+        ];
+        yield [
             'memcached://localhost:11222?socket_recv_size=1&socket_send_size=2',
-            array(\Memcached::OPT_RETRY_TIMEOUT => 8),
-            array(\Memcached::OPT_SOCKET_RECV_SIZE => 1, \Memcached::OPT_SOCKET_SEND_SIZE => 2, \Memcached::OPT_RETRY_TIMEOUT => 8),
-        );
+            [\Memcached::OPT_RETRY_TIMEOUT => 8],
+            [\Memcached::OPT_SOCKET_RECV_SIZE => 1, \Memcached::OPT_SOCKET_SEND_SIZE => 2, \Memcached::OPT_RETRY_TIMEOUT => 8],
+        ];
     }
 
     public function testClear()
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
index 73e5cad5529a..b771fa0ed83d 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
@@ -43,7 +43,7 @@ public function testGetItems()
     {
         $adapter = $this->createCachePool();
 
-        $keys = array('foo', 'bar', 'baz', 'biz');
+        $keys = ['foo', 'bar', 'baz', 'biz'];
 
         /** @var CacheItemInterface[] $items */
         $items = $adapter->getItems($keys);
@@ -89,7 +89,7 @@ public function testDeleteItem()
 
     public function testDeleteItems()
     {
-        $this->assertTrue($this->createCachePool()->deleteItems(array('key', 'foo', 'bar')));
+        $this->assertTrue($this->createCachePool()->deleteItems(['key', 'foo', 'bar']));
     }
 
     public function testSave()
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PdoDbalAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PdoDbalAdapterTest.php
index f89a27ce6482..d0699f1e3443 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PdoDbalAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PdoDbalAdapterTest.php
@@ -32,7 +32,7 @@ public static function setupBeforeClass()
 
         self::$dbFile = tempnam(sys_get_temp_dir(), 'sf_sqlite_cache');
 
-        $pool = new PdoAdapter(DriverManager::getConnection(array('driver' => 'pdo_sqlite', 'path' => self::$dbFile)));
+        $pool = new PdoAdapter(DriverManager::getConnection(['driver' => 'pdo_sqlite', 'path' => self::$dbFile]));
         $pool->createTable();
     }
 
@@ -43,6 +43,6 @@ public static function tearDownAfterClass()
 
     public function createCachePool($defaultLifetime = 0)
     {
-        return new PdoAdapter(DriverManager::getConnection(array('driver' => 'pdo_sqlite', 'path' => self::$dbFile)), '', $defaultLifetime);
+        return new PdoAdapter(DriverManager::getConnection(['driver' => 'pdo_sqlite', 'path' => self::$dbFile]), '', $defaultLifetime);
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
index 930594fb92a8..a227adffa02b 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
@@ -20,7 +20,7 @@
  */
 class PhpArrayAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testBasicUsage' => 'PhpArrayAdapter is read-only.',
         'testBasicUsageWithLongKey' => 'PhpArrayAdapter is read-only.',
         'testClear' => 'PhpArrayAdapter is read-only.',
@@ -51,7 +51,7 @@ class PhpArrayAdapterTest extends AdapterTestCase
 
         'testDefaultLifeTime' => 'PhpArrayAdapter does not allow configuring a default lifetime.',
         'testPrune' => 'PhpArrayAdapter just proxies',
-    );
+    ];
 
     protected static $file;
 
@@ -74,22 +74,22 @@ public function createCachePool()
 
     public function testStore()
     {
-        $arrayWithRefs = array();
+        $arrayWithRefs = [];
         $arrayWithRefs[0] = 123;
         $arrayWithRefs[1] = &$arrayWithRefs[0];
 
-        $object = (object) array(
+        $object = (object) [
             'foo' => 'bar',
             'foo2' => 'bar2',
-        );
+        ];
 
-        $expected = array(
+        $expected = [
             'null' => null,
             'serializedString' => serialize($object),
             'arrayWithRefs' => $arrayWithRefs,
             'object' => $object,
-            'arrayWithObject' => array('bar' => $object),
-        );
+            'arrayWithObject' => ['bar' => $object],
+        ];
 
         $adapter = $this->createCachePool();
         $adapter->warmUp($expected);
@@ -101,13 +101,13 @@ public function testStore()
 
     public function testStoredFile()
     {
-        $expected = array(
+        $expected = [
             'integer' => 42,
             'float' => 42.42,
             'boolean' => true,
-            'array_simple' => array('foo', 'bar'),
-            'array_associative' => array('foo' => 'bar', 'foo2' => 'bar2'),
-        );
+            'array_simple' => ['foo', 'bar'],
+            'array_associative' => ['foo' => 'bar', 'foo2' => 'bar2'],
+        ];
 
         $adapter = $this->createCachePool();
         $adapter->warmUp($expected);
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterWithFallbackTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterWithFallbackTest.php
index 1a23198c2f98..a7feced4ea16 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterWithFallbackTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterWithFallbackTest.php
@@ -19,14 +19,14 @@
  */
 class PhpArrayAdapterWithFallbackTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testGetItemInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
         'testGetItemsInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
         'testHasItemInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
         'testDeleteItemInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
         'testDeleteItemsInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
         'testPrune' => 'PhpArrayAdapter just proxies',
-    );
+    ];
 
     protected static $file;
 
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PhpFilesAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PhpFilesAdapterTest.php
index 8e93c937f6a6..247160d53c26 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PhpFilesAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PhpFilesAdapterTest.php
@@ -19,9 +19,9 @@
  */
 class PhpFilesAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testDefaultLifeTime' => 'PhpFilesAdapter does not allow configuring a default lifetime.',
-    );
+    ];
 
     public function createCachePool()
     {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PredisAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PredisAdapterTest.php
index c005d64abf1c..f311a3539007 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PredisAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PredisAdapterTest.php
@@ -19,20 +19,20 @@ class PredisAdapterTest extends AbstractRedisAdapterTest
     public static function setupBeforeClass()
     {
         parent::setupBeforeClass();
-        self::$redis = new \Predis\Client(array('host' => getenv('REDIS_HOST')));
+        self::$redis = new \Predis\Client(['host' => getenv('REDIS_HOST')]);
     }
 
     public function testCreateConnection()
     {
         $redisHost = getenv('REDIS_HOST');
 
-        $redis = RedisAdapter::createConnection('redis://'.$redisHost.'/1', array('class' => \Predis\Client::class, 'timeout' => 3));
+        $redis = RedisAdapter::createConnection('redis://'.$redisHost.'/1', ['class' => \Predis\Client::class, 'timeout' => 3]);
         $this->assertInstanceOf(\Predis\Client::class, $redis);
 
         $connection = $redis->getConnection();
         $this->assertInstanceOf(StreamConnection::class, $connection);
 
-        $params = array(
+        $params = [
             'scheme' => 'tcp',
             'host' => $redisHost,
             'path' => '',
@@ -47,7 +47,7 @@ public function testCreateConnection()
             'lazy' => false,
             'database' => '1',
             'password' => null,
-        );
+        ];
         $this->assertSame($params, $connection->getParameters()->toArray());
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PredisClusterAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PredisClusterAdapterTest.php
index 38915397da99..f723dc446857 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PredisClusterAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PredisClusterAdapterTest.php
@@ -16,7 +16,7 @@ class PredisClusterAdapterTest extends AbstractRedisAdapterTest
     public static function setupBeforeClass()
     {
         parent::setupBeforeClass();
-        self::$redis = new \Predis\Client(array(array('host' => getenv('REDIS_HOST'))));
+        self::$redis = new \Predis\Client([['host' => getenv('REDIS_HOST')]]);
     }
 
     public static function tearDownAfterClass()
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ProxyAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ProxyAdapterTest.php
index ff4b9d34bcba..f69ad67939f7 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/ProxyAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/ProxyAdapterTest.php
@@ -21,11 +21,11 @@
  */
 class ProxyAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testDeferredSaveWithoutCommit' => 'Assumes a shared cache which ArrayAdapter is not.',
         'testSaveWithoutExpire' => 'Assumes a shared cache which ArrayAdapter is not.',
         'testPrune' => 'ProxyAdapter just proxies',
-    );
+    ];
 
     public function createCachePool($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/RedisAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/RedisAdapterTest.php
index 28c310fb18da..eb2cbd46fd95 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/RedisAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/RedisAdapterTest.php
@@ -20,7 +20,7 @@ class RedisAdapterTest extends AbstractRedisAdapterTest
     public static function setupBeforeClass()
     {
         parent::setupBeforeClass();
-        self::$redis = AbstractAdapter::createConnection('redis://'.getenv('REDIS_HOST'), array('lazy' => true));
+        self::$redis = AbstractAdapter::createConnection('redis://'.getenv('REDIS_HOST'), ['lazy' => true]);
     }
 
     public function createCachePool($defaultLifetime = 0)
@@ -43,13 +43,13 @@ public function testCreateConnection()
         $redis = RedisAdapter::createConnection('redis://'.$redisHost.'/2');
         $this->assertSame(2, $redis->getDbNum());
 
-        $redis = RedisAdapter::createConnection('redis://'.$redisHost, array('timeout' => 3));
+        $redis = RedisAdapter::createConnection('redis://'.$redisHost, ['timeout' => 3]);
         $this->assertEquals(3, $redis->getTimeout());
 
         $redis = RedisAdapter::createConnection('redis://'.$redisHost.'?timeout=4');
         $this->assertEquals(4, $redis->getTimeout());
 
-        $redis = RedisAdapter::createConnection('redis://'.$redisHost, array('read_timeout' => 5));
+        $redis = RedisAdapter::createConnection('redis://'.$redisHost, ['read_timeout' => 5]);
         $this->assertEquals(5, $redis->getReadTimeout());
     }
 
@@ -65,11 +65,11 @@ public function testFailedCreateConnection($dsn)
 
     public function provideFailedCreateConnection()
     {
-        return array(
-            array('redis://localhost:1234'),
-            array('redis://foo@localhost'),
-            array('redis://localhost/123'),
-        );
+        return [
+            ['redis://localhost:1234'],
+            ['redis://foo@localhost'],
+            ['redis://localhost/123'],
+        ];
     }
 
     /**
@@ -84,9 +84,9 @@ public function testInvalidCreateConnection($dsn)
 
     public function provideInvalidCreateConnection()
     {
-        return array(
-            array('foo://localhost'),
-            array('redis://'),
-        );
+        return [
+            ['foo://localhost'],
+            ['redis://'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/RedisArrayAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/RedisArrayAdapterTest.php
index bef3eb88729f..749b039a030d 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/RedisArrayAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/RedisArrayAdapterTest.php
@@ -19,6 +19,6 @@ public static function setupBeforeClass()
         if (!class_exists('RedisArray')) {
             self::markTestSkipped('The RedisArray class is required.');
         }
-        self::$redis = new \RedisArray(array(getenv('REDIS_HOST')), array('lazy_connect' => true));
+        self::$redis = new \RedisArray([getenv('REDIS_HOST')], ['lazy_connect' => true]);
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/SimpleCacheAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/SimpleCacheAdapterTest.php
index 460f3b09541b..84713416cdea 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/SimpleCacheAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/SimpleCacheAdapterTest.php
@@ -19,9 +19,9 @@
  */
 class SimpleCacheAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testPrune' => 'SimpleCache just proxies',
-    );
+    ];
 
     public function createCachePool($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
index 7074299e7ac3..d0a1e5daf77b 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
@@ -56,7 +56,7 @@ public function testInvalidateTags()
         $pool->save($i3->tag('foo')->tag('baz'));
         $pool->save($foo);
 
-        $pool->invalidateTags(array('bar'));
+        $pool->invalidateTags(['bar']);
 
         $this->assertFalse($pool->getItem('i0')->isHit());
         $this->assertTrue($pool->getItem('i1')->isHit());
@@ -64,7 +64,7 @@ public function testInvalidateTags()
         $this->assertTrue($pool->getItem('i3')->isHit());
         $this->assertTrue($pool->getItem('foo')->isHit());
 
-        $pool->invalidateTags(array('foo'));
+        $pool->invalidateTags(['foo']);
 
         $this->assertFalse($pool->getItem('i1')->isHit());
         $this->assertFalse($pool->getItem('i3')->isHit());
@@ -85,7 +85,7 @@ public function testInvalidateCommits()
         $foo->tag('tag');
 
         $pool1->saveDeferred($foo->set('foo'));
-        $pool1->invalidateTags(array('tag'));
+        $pool1->invalidateTags(['tag']);
 
         $pool2 = $this->createCachePool();
         $foo = $pool2->getItem('foo');
@@ -103,7 +103,7 @@ public function testTagsAreCleanedOnSave()
         $i = $pool->getItem('k');
         $pool->save($i->tag('bar'));
 
-        $pool->invalidateTags(array('foo'));
+        $pool->invalidateTags(['foo']);
         $this->assertTrue($pool->getItem('k')->isHit());
     }
 
@@ -116,7 +116,7 @@ public function testTagsAreCleanedOnDelete()
         $pool->deleteItem('k');
 
         $pool->save($pool->getItem('k'));
-        $pool->invalidateTags(array('foo'));
+        $pool->invalidateTags(['foo']);
 
         $this->assertTrue($pool->getItem('k')->isHit());
     }
@@ -126,11 +126,11 @@ public function testTagItemExpiry()
         $pool = $this->createCachePool(10);
 
         $item = $pool->getItem('foo');
-        $item->tag(array('baz'));
+        $item->tag(['baz']);
         $item->expiresAfter(100);
 
         $pool->save($item);
-        $pool->invalidateTags(array('baz'));
+        $pool->invalidateTags(['baz']);
         $this->assertFalse($pool->getItem('foo')->isHit());
 
         sleep(20);
@@ -146,7 +146,7 @@ public function testGetPreviousTags()
         $pool->save($i->tag('foo'));
 
         $i = $pool->getItem('k');
-        $this->assertSame(array('foo' => 'foo'), $i->getPreviousTags());
+        $this->assertSame(['foo' => 'foo'], $i->getPreviousTags());
     }
 
     public function testPrune()
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/TraceableAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/TraceableAdapterTest.php
index 3755e88db5f1..35eba7d77bec 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/TraceableAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/TraceableAdapterTest.php
@@ -19,9 +19,9 @@
  */
 class TraceableAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testPrune' => 'TraceableAdapter just proxies',
-    );
+    ];
 
     public function createCachePool($defaultLifetime = 0)
     {
@@ -37,7 +37,7 @@ public function testGetItemMissTrace()
 
         $call = $calls[0];
         $this->assertSame('getItem', $call->name);
-        $this->assertSame(array('k' => false), $call->result);
+        $this->assertSame(['k' => false], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(1, $call->misses);
         $this->assertNotEmpty($call->start);
@@ -61,7 +61,7 @@ public function testGetItemHitTrace()
     public function testGetItemsMissTrace()
     {
         $pool = $this->createCachePool();
-        $arg = array('k0', 'k1');
+        $arg = ['k0', 'k1'];
         $items = $pool->getItems($arg);
         foreach ($items as $item) {
         }
@@ -70,7 +70,7 @@ public function testGetItemsMissTrace()
 
         $call = $calls[0];
         $this->assertSame('getItems', $call->name);
-        $this->assertSame(array('k0' => false, 'k1' => false), $call->result);
+        $this->assertSame(['k0' => false, 'k1' => false], $call->result);
         $this->assertSame(2, $call->misses);
         $this->assertNotEmpty($call->start);
         $this->assertNotEmpty($call->end);
@@ -85,7 +85,7 @@ public function testHasItemMissTrace()
 
         $call = $calls[0];
         $this->assertSame('hasItem', $call->name);
-        $this->assertSame(array('k' => false), $call->result);
+        $this->assertSame(['k' => false], $call->result);
         $this->assertNotEmpty($call->start);
         $this->assertNotEmpty($call->end);
     }
@@ -101,7 +101,7 @@ public function testHasItemHitTrace()
 
         $call = $calls[2];
         $this->assertSame('hasItem', $call->name);
-        $this->assertSame(array('k' => true), $call->result);
+        $this->assertSame(['k' => true], $call->result);
         $this->assertNotEmpty($call->start);
         $this->assertNotEmpty($call->end);
     }
@@ -115,7 +115,7 @@ public function testDeleteItemTrace()
 
         $call = $calls[0];
         $this->assertSame('deleteItem', $call->name);
-        $this->assertSame(array('k' => true), $call->result);
+        $this->assertSame(['k' => true], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(0, $call->misses);
         $this->assertNotEmpty($call->start);
@@ -125,14 +125,14 @@ public function testDeleteItemTrace()
     public function testDeleteItemsTrace()
     {
         $pool = $this->createCachePool();
-        $arg = array('k0', 'k1');
+        $arg = ['k0', 'k1'];
         $pool->deleteItems($arg);
         $calls = $pool->getCalls();
         $this->assertCount(1, $calls);
 
         $call = $calls[0];
         $this->assertSame('deleteItems', $call->name);
-        $this->assertSame(array('keys' => $arg, 'result' => true), $call->result);
+        $this->assertSame(['keys' => $arg, 'result' => true], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(0, $call->misses);
         $this->assertNotEmpty($call->start);
@@ -149,7 +149,7 @@ public function testSaveTrace()
 
         $call = $calls[1];
         $this->assertSame('save', $call->name);
-        $this->assertSame(array('k' => true), $call->result);
+        $this->assertSame(['k' => true], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(0, $call->misses);
         $this->assertNotEmpty($call->start);
@@ -166,7 +166,7 @@ public function testSaveDeferredTrace()
 
         $call = $calls[1];
         $this->assertSame('saveDeferred', $call->name);
-        $this->assertSame(array('k' => true), $call->result);
+        $this->assertSame(['k' => true], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(0, $call->misses);
         $this->assertNotEmpty($call->start);
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/TraceableTagAwareAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/TraceableTagAwareAdapterTest.php
index 9b50bfabe65b..5cd4185cb097 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/TraceableTagAwareAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/TraceableTagAwareAdapterTest.php
@@ -23,7 +23,7 @@ class TraceableTagAwareAdapterTest extends TraceableAdapterTest
     public function testInvalidateTags()
     {
         $pool = new TraceableTagAwareAdapter(new TagAwareAdapter(new FilesystemAdapter()));
-        $pool->invalidateTags(array('foo'));
+        $pool->invalidateTags(['foo']);
         $calls = $pool->getCalls();
         $this->assertCount(1, $calls);
 
diff --git a/src/Symfony/Component/Cache/Tests/CacheItemTest.php b/src/Symfony/Component/Cache/Tests/CacheItemTest.php
index 4aae16b63ca4..fff5202b178a 100644
--- a/src/Symfony/Component/Cache/Tests/CacheItemTest.php
+++ b/src/Symfony/Component/Cache/Tests/CacheItemTest.php
@@ -33,23 +33,23 @@ public function testInvalidKey($key)
 
     public function provideInvalidKey()
     {
-        return array(
-            array(''),
-            array('{'),
-            array('}'),
-            array('('),
-            array(')'),
-            array('/'),
-            array('\\'),
-            array('@'),
-            array(':'),
-            array(true),
-            array(null),
-            array(1),
-            array(1.1),
-            array(array(array())),
-            array(new \Exception('foo')),
-        );
+        return [
+            [''],
+            ['{'],
+            ['}'],
+            ['('],
+            [')'],
+            ['/'],
+            ['\\'],
+            ['@'],
+            [':'],
+            [true],
+            [null],
+            [1],
+            [1.1],
+            [[[]]],
+            [new \Exception('foo')],
+        ];
     }
 
     public function testTag()
@@ -57,10 +57,10 @@ public function testTag()
         $item = new CacheItem();
 
         $this->assertSame($item, $item->tag('foo'));
-        $this->assertSame($item, $item->tag(array('bar', 'baz')));
+        $this->assertSame($item, $item->tag(['bar', 'baz']));
 
         \call_user_func(\Closure::bind(function () use ($item) {
-            $this->assertSame(array('foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'), $item->tags);
+            $this->assertSame(['foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'], $item->tags);
         }, $this, CacheItem::class));
     }
 
diff --git a/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php b/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php
index 7cdcafd8e545..13b4f330663c 100644
--- a/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php
+++ b/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php
@@ -6,7 +6,7 @@
 
 class ArrayCache extends CacheProvider
 {
-    private $data = array();
+    private $data = [];
 
     protected function doFetch($id)
     {
@@ -26,7 +26,7 @@ protected function doContains($id)
 
     protected function doSave($id, $data, $lifeTime = 0)
     {
-        $this->data[$id] = array($data, $lifeTime ? time() + $lifeTime : false);
+        $this->data[$id] = [$data, $lifeTime ? time() + $lifeTime : false];
 
         return true;
     }
@@ -40,7 +40,7 @@ protected function doDelete($id)
 
     protected function doFlush()
     {
-        $this->data = array();
+        $this->data = [];
 
         return true;
     }
diff --git a/src/Symfony/Component/Cache/Tests/Fixtures/ExternalAdapter.php b/src/Symfony/Component/Cache/Tests/Fixtures/ExternalAdapter.php
index 493906ea0ccc..779a374ec7ab 100644
--- a/src/Symfony/Component/Cache/Tests/Fixtures/ExternalAdapter.php
+++ b/src/Symfony/Component/Cache/Tests/Fixtures/ExternalAdapter.php
@@ -34,7 +34,7 @@ public function getItem($key)
         return $this->cache->getItem($key);
     }
 
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         return $this->cache->getItems($keys);
     }
diff --git a/src/Symfony/Component/Cache/Tests/Simple/AbstractRedisCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/AbstractRedisCacheTest.php
index 3e668fdd123b..dd5e1509c1bc 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/AbstractRedisCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/AbstractRedisCacheTest.php
@@ -15,11 +15,11 @@
 
 abstract class AbstractRedisCacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testSetTtl' => 'Testing expiration slows down the test suite',
         'testSetMultipleTtl' => 'Testing expiration slows down the test suite',
         'testDefaultLifeTime' => 'Testing expiration slows down the test suite',
-    );
+    ];
 
     protected static $redis;
 
diff --git a/src/Symfony/Component/Cache/Tests/Simple/ApcuCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/ApcuCacheTest.php
index 3df32c1c5e68..f37b95a093fa 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/ApcuCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/ApcuCacheTest.php
@@ -15,11 +15,11 @@
 
 class ApcuCacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testSetTtl' => 'Testing expiration slows down the test suite',
         'testSetMultipleTtl' => 'Testing expiration slows down the test suite',
         'testDefaultLifeTime' => 'Testing expiration slows down the test suite',
-    );
+    ];
 
     public function createSimpleCache($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Simple/CacheTestCase.php b/src/Symfony/Component/Cache/Tests/Simple/CacheTestCase.php
index d0d85735989c..27003bf913eb 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/CacheTestCase.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/CacheTestCase.php
@@ -32,7 +32,7 @@ public static function validKeys()
             return parent::validKeys();
         }
 
-        return array_merge(parent::validKeys(), array(array("a\0b")));
+        return array_merge(parent::validKeys(), [["a\0b"]]);
     }
 
     public function testDefaultLifeTime()
@@ -68,9 +68,9 @@ public function testNotUnserializable()
 
         $this->assertNull($cache->get('foo'));
 
-        $cache->setMultiple(array('foo' => new NotUnserializable()));
+        $cache->setMultiple(['foo' => new NotUnserializable()]);
 
-        foreach ($cache->getMultiple(array('foo')) as $value) {
+        foreach ($cache->getMultiple(['foo']) as $value) {
         }
         $this->assertNull($value);
 
diff --git a/src/Symfony/Component/Cache/Tests/Simple/ChainCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/ChainCacheTest.php
index ab28e3bce7b9..e6f7c7cc6322 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/ChainCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/ChainCacheTest.php
@@ -24,7 +24,7 @@ class ChainCacheTest extends CacheTestCase
 {
     public function createSimpleCache($defaultLifetime = 0)
     {
-        return new ChainCache(array(new ArrayCache($defaultLifetime), new FilesystemCache('', $defaultLifetime)), $defaultLifetime);
+        return new ChainCache([new ArrayCache($defaultLifetime), new FilesystemCache('', $defaultLifetime)], $defaultLifetime);
     }
 
     /**
@@ -33,7 +33,7 @@ public function createSimpleCache($defaultLifetime = 0)
      */
     public function testEmptyCachesException()
     {
-        new ChainCache(array());
+        new ChainCache([]);
     }
 
     /**
@@ -42,7 +42,7 @@ public function testEmptyCachesException()
      */
     public function testInvalidCacheException()
     {
-        new ChainCache(array(new \stdClass()));
+        new ChainCache([new \stdClass()]);
     }
 
     public function testPrune()
@@ -51,18 +51,18 @@ public function testPrune()
             $this->markTestSkipped($this->skippedTests[__FUNCTION__]);
         }
 
-        $cache = new ChainCache(array(
+        $cache = new ChainCache([
             $this->getPruneableMock(),
             $this->getNonPruneableMock(),
             $this->getPruneableMock(),
-        ));
+        ]);
         $this->assertTrue($cache->prune());
 
-        $cache = new ChainCache(array(
+        $cache = new ChainCache([
             $this->getPruneableMock(),
             $this->getFailingPruneableMock(),
             $this->getPruneableMock(),
-        ));
+        ]);
         $this->assertFalse($cache->prune());
     }
 
diff --git a/src/Symfony/Component/Cache/Tests/Simple/DoctrineCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/DoctrineCacheTest.php
index 127c96858cbe..af4331d69b5a 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/DoctrineCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/DoctrineCacheTest.php
@@ -19,10 +19,10 @@
  */
 class DoctrineCacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testObjectDoesNotChangeInCache' => 'ArrayCache does not use serialize/unserialize',
         'testNotUnserializable' => 'ArrayCache does not use serialize/unserialize',
-    );
+    ];
 
     public function createSimpleCache($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Simple/MemcachedCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/MemcachedCacheTest.php
index ee9e49d3dd40..f83f0a2e3452 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/MemcachedCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/MemcachedCacheTest.php
@@ -16,11 +16,11 @@
 
 class MemcachedCacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testSetTtl' => 'Testing expiration slows down the test suite',
         'testSetMultipleTtl' => 'Testing expiration slows down the test suite',
         'testDefaultLifeTime' => 'Testing expiration slows down the test suite',
-    );
+    ];
 
     protected static $client;
 
@@ -40,29 +40,29 @@ public static function setupBeforeClass()
 
     public function createSimpleCache($defaultLifetime = 0)
     {
-        $client = $defaultLifetime ? AbstractAdapter::createConnection('memcached://'.getenv('MEMCACHED_HOST'), array('binary_protocol' => false)) : self::$client;
+        $client = $defaultLifetime ? AbstractAdapter::createConnection('memcached://'.getenv('MEMCACHED_HOST'), ['binary_protocol' => false]) : self::$client;
 
         return new MemcachedCache($client, str_replace('\\', '.', __CLASS__), $defaultLifetime);
     }
 
     public function testCreatePersistentConnectionShouldNotDupServerList()
     {
-        $instance = MemcachedCache::createConnection('memcached://'.getenv('MEMCACHED_HOST'), array('persistent_id' => 'persistent'));
+        $instance = MemcachedCache::createConnection('memcached://'.getenv('MEMCACHED_HOST'), ['persistent_id' => 'persistent']);
         $this->assertCount(1, $instance->getServerList());
 
-        $instance = MemcachedCache::createConnection('memcached://'.getenv('MEMCACHED_HOST'), array('persistent_id' => 'persistent'));
+        $instance = MemcachedCache::createConnection('memcached://'.getenv('MEMCACHED_HOST'), ['persistent_id' => 'persistent']);
         $this->assertCount(1, $instance->getServerList());
     }
 
     public function testOptions()
     {
-        $client = MemcachedCache::createConnection(array(), array(
+        $client = MemcachedCache::createConnection([], [
             'libketama_compatible' => false,
             'distribution' => 'modula',
             'compression' => true,
             'serializer' => 'php',
             'hash' => 'md5',
-        ));
+        ]);
 
         $this->assertSame(\Memcached::SERIALIZER_PHP, $client->getOption(\Memcached::OPT_SERIALIZER));
         $this->assertSame(\Memcached::HASH_MD5, $client->getOption(\Memcached::OPT_HASH));
@@ -78,24 +78,24 @@ public function testOptions()
      */
     public function testBadOptions($name, $value)
     {
-        MemcachedCache::createConnection(array(), array($name => $value));
+        MemcachedCache::createConnection([], [$name => $value]);
     }
 
     public function provideBadOptions()
     {
-        return array(
-            array('foo', 'bar'),
-            array('hash', 'zyx'),
-            array('serializer', 'zyx'),
-            array('distribution', 'zyx'),
-        );
+        return [
+            ['foo', 'bar'],
+            ['hash', 'zyx'],
+            ['serializer', 'zyx'],
+            ['distribution', 'zyx'],
+        ];
     }
 
     public function testDefaultOptions()
     {
         $this->assertTrue(MemcachedCache::isSupported());
 
-        $client = MemcachedCache::createConnection(array());
+        $client = MemcachedCache::createConnection([]);
 
         $this->assertTrue($client->getOption(\Memcached::OPT_COMPRESSION));
         $this->assertSame(1, $client->getOption(\Memcached::OPT_BINARY_PROTOCOL));
@@ -112,7 +112,7 @@ public function testOptionSerializer()
             $this->markTestSkipped('Memcached::HAVE_JSON required');
         }
 
-        new MemcachedCache(MemcachedCache::createConnection(array(), array('serializer' => 'json')));
+        new MemcachedCache(MemcachedCache::createConnection([], ['serializer' => 'json']));
     }
 
     /**
@@ -121,54 +121,54 @@ public function testOptionSerializer()
     public function testServersSetting($dsn, $host, $port)
     {
         $client1 = MemcachedCache::createConnection($dsn);
-        $client2 = MemcachedCache::createConnection(array($dsn));
-        $client3 = MemcachedCache::createConnection(array(array($host, $port)));
-        $expect = array(
+        $client2 = MemcachedCache::createConnection([$dsn]);
+        $client3 = MemcachedCache::createConnection([[$host, $port]]);
+        $expect = [
             'host' => $host,
             'port' => $port,
-        );
+        ];
 
-        $f = function ($s) { return array('host' => $s['host'], 'port' => $s['port']); };
-        $this->assertSame(array($expect), array_map($f, $client1->getServerList()));
-        $this->assertSame(array($expect), array_map($f, $client2->getServerList()));
-        $this->assertSame(array($expect), array_map($f, $client3->getServerList()));
+        $f = function ($s) { return ['host' => $s['host'], 'port' => $s['port']]; };
+        $this->assertSame([$expect], array_map($f, $client1->getServerList()));
+        $this->assertSame([$expect], array_map($f, $client2->getServerList()));
+        $this->assertSame([$expect], array_map($f, $client3->getServerList()));
     }
 
     public function provideServersSetting()
     {
-        yield array(
+        yield [
             'memcached://127.0.0.1/50',
             '127.0.0.1',
             11211,
-        );
-        yield array(
+        ];
+        yield [
             'memcached://localhost:11222?weight=25',
             'localhost',
             11222,
-        );
+        ];
         if (filter_var(ini_get('memcached.use_sasl'), FILTER_VALIDATE_BOOLEAN)) {
-            yield array(
+            yield [
                 'memcached://user:password@127.0.0.1?weight=50',
                 '127.0.0.1',
                 11211,
-            );
+            ];
         }
-        yield array(
+        yield [
             'memcached:///var/run/memcached.sock?weight=25',
             '/var/run/memcached.sock',
             0,
-        );
-        yield array(
+        ];
+        yield [
             'memcached:///var/local/run/memcached.socket?weight=25',
             '/var/local/run/memcached.socket',
             0,
-        );
+        ];
         if (filter_var(ini_get('memcached.use_sasl'), FILTER_VALIDATE_BOOLEAN)) {
-            yield array(
+            yield [
                 'memcached://user:password@/var/local/run/memcached.socket?weight=25',
                 '/var/local/run/memcached.socket',
                 0,
-            );
+            ];
         }
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Simple/MemcachedCacheTextModeTest.php b/src/Symfony/Component/Cache/Tests/Simple/MemcachedCacheTextModeTest.php
index 43cadf903484..13865a6098e1 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/MemcachedCacheTextModeTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/MemcachedCacheTextModeTest.php
@@ -18,7 +18,7 @@ class MemcachedCacheTextModeTest extends MemcachedCacheTest
 {
     public function createSimpleCache($defaultLifetime = 0)
     {
-        $client = AbstractAdapter::createConnection('memcached://'.getenv('MEMCACHED_HOST'), array('binary_protocol' => false));
+        $client = AbstractAdapter::createConnection('memcached://'.getenv('MEMCACHED_HOST'), ['binary_protocol' => false]);
 
         return new MemcachedCache($client, str_replace('\\', '.', __CLASS__), $defaultLifetime);
     }
diff --git a/src/Symfony/Component/Cache/Tests/Simple/NullCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/NullCacheTest.php
index 7b760fd3bdda..31f42c32b6a8 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/NullCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/NullCacheTest.php
@@ -40,7 +40,7 @@ public function testGetMultiple()
     {
         $cache = $this->createCachePool();
 
-        $keys = array('foo', 'bar', 'baz', 'biz');
+        $keys = ['foo', 'bar', 'baz', 'biz'];
 
         $default = new \stdClass();
         $items = $cache->getMultiple($keys, $default);
@@ -75,7 +75,7 @@ public function testDelete()
 
     public function testDeleteMultiple()
     {
-        $this->assertTrue($this->createCachePool()->deleteMultiple(array('key', 'foo', 'bar')));
+        $this->assertTrue($this->createCachePool()->deleteMultiple(['key', 'foo', 'bar']));
     }
 
     public function testSet()
@@ -90,7 +90,7 @@ public function testSetMultiple()
     {
         $cache = $this->createCachePool();
 
-        $this->assertFalse($cache->setMultiple(array('key' => 'val')));
+        $this->assertFalse($cache->setMultiple(['key' => 'val']));
         $this->assertNull($cache->get('key'));
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Simple/PdoDbalCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/PdoDbalCacheTest.php
index 158e2c892490..ce1a9ae4f8c6 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/PdoDbalCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/PdoDbalCacheTest.php
@@ -32,7 +32,7 @@ public static function setupBeforeClass()
 
         self::$dbFile = tempnam(sys_get_temp_dir(), 'sf_sqlite_cache');
 
-        $pool = new PdoCache(DriverManager::getConnection(array('driver' => 'pdo_sqlite', 'path' => self::$dbFile)));
+        $pool = new PdoCache(DriverManager::getConnection(['driver' => 'pdo_sqlite', 'path' => self::$dbFile]));
         $pool->createTable();
     }
 
@@ -43,6 +43,6 @@ public static function tearDownAfterClass()
 
     public function createSimpleCache($defaultLifetime = 0)
     {
-        return new PdoCache(DriverManager::getConnection(array('driver' => 'pdo_sqlite', 'path' => self::$dbFile)), '', $defaultLifetime);
+        return new PdoCache(DriverManager::getConnection(['driver' => 'pdo_sqlite', 'path' => self::$dbFile]), '', $defaultLifetime);
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php
index b4862c61bd93..a1bab079cca2 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php
@@ -20,7 +20,7 @@
  */
 class PhpArrayCacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testBasicUsageWithLongKey' => 'PhpArrayCache does no writes',
 
         'testDelete' => 'PhpArrayCache does no writes',
@@ -45,7 +45,7 @@ class PhpArrayCacheTest extends CacheTestCase
 
         'testDefaultLifeTime' => 'PhpArrayCache does not allow configuring a default lifetime.',
         'testPrune' => 'PhpArrayCache just proxies',
-    );
+    ];
 
     protected static $file;
 
@@ -68,22 +68,22 @@ public function createSimpleCache()
 
     public function testStore()
     {
-        $arrayWithRefs = array();
+        $arrayWithRefs = [];
         $arrayWithRefs[0] = 123;
         $arrayWithRefs[1] = &$arrayWithRefs[0];
 
-        $object = (object) array(
+        $object = (object) [
             'foo' => 'bar',
             'foo2' => 'bar2',
-        );
+        ];
 
-        $expected = array(
+        $expected = [
             'null' => null,
             'serializedString' => serialize($object),
             'arrayWithRefs' => $arrayWithRefs,
             'object' => $object,
-            'arrayWithObject' => array('bar' => $object),
-        );
+            'arrayWithObject' => ['bar' => $object],
+        ];
 
         $cache = new PhpArrayCache(self::$file, new NullCache());
         $cache->warmUp($expected);
@@ -95,13 +95,13 @@ public function testStore()
 
     public function testStoredFile()
     {
-        $expected = array(
+        $expected = [
             'integer' => 42,
             'float' => 42.42,
             'boolean' => true,
-            'array_simple' => array('foo', 'bar'),
-            'array_associative' => array('foo' => 'bar', 'foo2' => 'bar2'),
-        );
+            'array_simple' => ['foo', 'bar'],
+            'array_associative' => ['foo' => 'bar', 'foo2' => 'bar2'],
+        ];
 
         $cache = new PhpArrayCache(self::$file, new NullCache());
         $cache->warmUp($expected);
diff --git a/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheWithFallbackTest.php b/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheWithFallbackTest.php
index 4b6a94f709b6..abee5e787216 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheWithFallbackTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheWithFallbackTest.php
@@ -20,7 +20,7 @@
  */
 class PhpArrayCacheWithFallbackTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testGetInvalidKeys' => 'PhpArrayCache does no validation',
         'testGetMultipleInvalidKeys' => 'PhpArrayCache does no validation',
         'testDeleteInvalidKeys' => 'PhpArrayCache does no validation',
@@ -32,7 +32,7 @@ class PhpArrayCacheWithFallbackTest extends CacheTestCase
         'testSetMultipleInvalidTtl' => 'PhpArrayCache does no validation',
         'testHasInvalidKeys' => 'PhpArrayCache does no validation',
         'testPrune' => 'PhpArrayCache just proxies',
-    );
+    ];
 
     protected static $file;
 
diff --git a/src/Symfony/Component/Cache/Tests/Simple/PhpFilesCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/PhpFilesCacheTest.php
index 7a402682ae24..936f29a436f0 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/PhpFilesCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/PhpFilesCacheTest.php
@@ -19,9 +19,9 @@
  */
 class PhpFilesCacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testDefaultLifeTime' => 'PhpFilesCache does not allow configuring a default lifetime.',
-    );
+    ];
 
     public function createSimpleCache()
     {
diff --git a/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheTest.php
index 78582894fbe1..1bc75c906035 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheTest.php
@@ -19,9 +19,9 @@
  */
 class Psr6CacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testPrune' => 'Psr6Cache just proxies',
-    );
+    ];
 
     public function createSimpleCache($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Simple/RedisArrayCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/RedisArrayCacheTest.php
index 3c903c8a9b4a..bda39d990bcb 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/RedisArrayCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/RedisArrayCacheTest.php
@@ -19,6 +19,6 @@ public static function setupBeforeClass()
         if (!class_exists('RedisArray')) {
             self::markTestSkipped('The RedisArray class is required.');
         }
-        self::$redis = new \RedisArray(array(getenv('REDIS_HOST')), array('lazy_connect' => true));
+        self::$redis = new \RedisArray([getenv('REDIS_HOST')], ['lazy_connect' => true]);
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Simple/RedisCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/RedisCacheTest.php
index d33421f9aae4..407d916c7317 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/RedisCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/RedisCacheTest.php
@@ -33,13 +33,13 @@ public function testCreateConnection()
         $redis = RedisCache::createConnection('redis://'.$redisHost.'/2');
         $this->assertSame(2, $redis->getDbNum());
 
-        $redis = RedisCache::createConnection('redis://'.$redisHost, array('timeout' => 3));
+        $redis = RedisCache::createConnection('redis://'.$redisHost, ['timeout' => 3]);
         $this->assertEquals(3, $redis->getTimeout());
 
         $redis = RedisCache::createConnection('redis://'.$redisHost.'?timeout=4');
         $this->assertEquals(4, $redis->getTimeout());
 
-        $redis = RedisCache::createConnection('redis://'.$redisHost, array('read_timeout' => 5));
+        $redis = RedisCache::createConnection('redis://'.$redisHost, ['read_timeout' => 5]);
         $this->assertEquals(5, $redis->getReadTimeout());
     }
 
@@ -55,11 +55,11 @@ public function testFailedCreateConnection($dsn)
 
     public function provideFailedCreateConnection()
     {
-        return array(
-            array('redis://localhost:1234'),
-            array('redis://foo@localhost'),
-            array('redis://localhost/123'),
-        );
+        return [
+            ['redis://localhost:1234'],
+            ['redis://foo@localhost'],
+            ['redis://localhost/123'],
+        ];
     }
 
     /**
@@ -74,9 +74,9 @@ public function testInvalidCreateConnection($dsn)
 
     public function provideInvalidCreateConnection()
     {
-        return array(
-            array('foo://localhost'),
-            array('redis://'),
-        );
+        return [
+            ['foo://localhost'],
+            ['redis://'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Simple/TraceableCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/TraceableCacheTest.php
index 535f93da4be5..e684caf36e8f 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/TraceableCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/TraceableCacheTest.php
@@ -19,9 +19,9 @@
  */
 class TraceableCacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testPrune' => 'TraceableCache just proxies',
-    );
+    ];
 
     public function createSimpleCache($defaultLifetime = 0)
     {
@@ -37,7 +37,7 @@ public function testGetMissTrace()
 
         $call = $calls[0];
         $this->assertSame('get', $call->name);
-        $this->assertSame(array('k' => false), $call->result);
+        $this->assertSame(['k' => false], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(1, $call->misses);
         $this->assertNotEmpty($call->start);
@@ -61,7 +61,7 @@ public function testGetMultipleMissTrace()
     {
         $pool = $this->createSimpleCache();
         $pool->set('k1', 123);
-        $values = $pool->getMultiple(array('k0', 'k1'));
+        $values = $pool->getMultiple(['k0', 'k1']);
         foreach ($values as $value) {
         }
         $calls = $pool->getCalls();
@@ -69,7 +69,7 @@ public function testGetMultipleMissTrace()
 
         $call = $calls[1];
         $this->assertSame('getMultiple', $call->name);
-        $this->assertSame(array('k1' => true, 'k0' => false), $call->result);
+        $this->assertSame(['k1' => true, 'k0' => false], $call->result);
         $this->assertSame(1, $call->misses);
         $this->assertNotEmpty($call->start);
         $this->assertNotEmpty($call->end);
@@ -84,7 +84,7 @@ public function testHasMissTrace()
 
         $call = $calls[0];
         $this->assertSame('has', $call->name);
-        $this->assertSame(array('k' => false), $call->result);
+        $this->assertSame(['k' => false], $call->result);
         $this->assertNotEmpty($call->start);
         $this->assertNotEmpty($call->end);
     }
@@ -99,7 +99,7 @@ public function testHasHitTrace()
 
         $call = $calls[1];
         $this->assertSame('has', $call->name);
-        $this->assertSame(array('k' => true), $call->result);
+        $this->assertSame(['k' => true], $call->result);
         $this->assertNotEmpty($call->start);
         $this->assertNotEmpty($call->end);
     }
@@ -113,7 +113,7 @@ public function testDeleteTrace()
 
         $call = $calls[0];
         $this->assertSame('delete', $call->name);
-        $this->assertSame(array('k' => true), $call->result);
+        $this->assertSame(['k' => true], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(0, $call->misses);
         $this->assertNotEmpty($call->start);
@@ -123,14 +123,14 @@ public function testDeleteTrace()
     public function testDeleteMultipleTrace()
     {
         $pool = $this->createSimpleCache();
-        $arg = array('k0', 'k1');
+        $arg = ['k0', 'k1'];
         $pool->deleteMultiple($arg);
         $calls = $pool->getCalls();
         $this->assertCount(1, $calls);
 
         $call = $calls[0];
         $this->assertSame('deleteMultiple', $call->name);
-        $this->assertSame(array('keys' => $arg, 'result' => true), $call->result);
+        $this->assertSame(['keys' => $arg, 'result' => true], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(0, $call->misses);
         $this->assertNotEmpty($call->start);
@@ -146,7 +146,7 @@ public function testTraceSetTrace()
 
         $call = $calls[0];
         $this->assertSame('set', $call->name);
-        $this->assertSame(array('k' => true), $call->result);
+        $this->assertSame(['k' => true], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(0, $call->misses);
         $this->assertNotEmpty($call->start);
@@ -156,13 +156,13 @@ public function testTraceSetTrace()
     public function testSetMultipleTrace()
     {
         $pool = $this->createSimpleCache();
-        $pool->setMultiple(array('k' => 'foo'));
+        $pool->setMultiple(['k' => 'foo']);
         $calls = $pool->getCalls();
         $this->assertCount(1, $calls);
 
         $call = $calls[0];
         $this->assertSame('setMultiple', $call->name);
-        $this->assertSame(array('keys' => array('k'), 'result' => true), $call->result);
+        $this->assertSame(['keys' => ['k'], 'result' => true], $call->result);
         $this->assertSame(0, $call->hits);
         $this->assertSame(0, $call->misses);
         $this->assertNotEmpty($call->start);
diff --git a/src/Symfony/Component/Cache/Traits/AbstractTrait.php b/src/Symfony/Component/Cache/Traits/AbstractTrait.php
index 441eddbde3cd..be576098e45e 100644
--- a/src/Symfony/Component/Cache/Traits/AbstractTrait.php
+++ b/src/Symfony/Component/Cache/Traits/AbstractTrait.php
@@ -26,7 +26,7 @@ trait AbstractTrait
     private $namespace;
     private $namespaceVersion = '';
     private $versioningIsEnabled = false;
-    private $deferred = array();
+    private $deferred = [];
 
     /**
      * @var int|null The maximum length to enforce for identifiers or null when no limit applies
@@ -93,7 +93,7 @@ public function hasItem($key)
         try {
             return $this->doHave($id);
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to check if key "{key}" is cached', array('key' => $key, 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to check if key "{key}" is cached', ['key' => $key, 'exception' => $e]);
 
             return false;
         }
@@ -104,15 +104,15 @@ public function hasItem($key)
      */
     public function clear()
     {
-        $this->deferred = array();
+        $this->deferred = [];
         if ($cleared = $this->versioningIsEnabled) {
             $namespaceVersion = substr_replace(base64_encode(pack('V', mt_rand())), ':', 5);
             try {
-                $cleared = $this->doSave(array('@'.$this->namespace => $namespaceVersion), 0);
+                $cleared = $this->doSave(['@'.$this->namespace => $namespaceVersion], 0);
             } catch (\Exception $e) {
                 $cleared = false;
             }
-            if ($cleared = true === $cleared || array() === $cleared) {
+            if ($cleared = true === $cleared || [] === $cleared) {
                 $this->namespaceVersion = $namespaceVersion;
             }
         }
@@ -120,7 +120,7 @@ public function clear()
         try {
             return $this->doClear($this->na
10000
mespace) || $cleared;
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to clear the cache', array('exception' => $e));
+            CacheItem::log($this->logger, 'Failed to clear the cache', ['exception' => $e]);
 
             return false;
         }
@@ -131,7 +131,7 @@ public function clear()
      */
     public function deleteItem($key)
     {
-        return $this->deleteItems(array($key));
+        return $this->deleteItems([$key]);
     }
 
     /**
@@ -139,7 +139,7 @@ public function deleteItem($key)
      */
     public function deleteItems(array $keys)
     {
-        $ids = array();
+        $ids = [];
 
         foreach ($keys as $key) {
             $ids[$key] = $this->getId($key);
@@ -159,12 +159,12 @@ public function deleteItems(array $keys)
         foreach ($ids as $key => $id) {
             try {
                 $e = null;
-                if ($this->doDelete(array($id))) {
+                if ($this->doDelete([$id])) {
                     continue;
                 }
             } catch (\Exception $e) {
             }
-            CacheItem::log($this->logger, 'Failed to delete key "{key}"', array('key' => $key, 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to delete key "{key}"', ['key' => $key, 'exception' => $e]);
             $ok = false;
         }
 
@@ -237,12 +237,12 @@ private function getId($key)
         if ($this->versioningIsEnabled && '' === $this->namespaceVersion) {
             $this->namespaceVersion = '1:';
             try {
-                foreach ($this->doFetch(array('@'.$this->namespace)) as $v) {
+                foreach ($this->doFetch(['@'.$this->namespace]) as $v) {
                     $this->namespaceVersion = $v;
                 }
                 if ('1:' === $this->namespaceVersion) {
                     $this->namespaceVersion = substr_replace(base64_encode(pack('V', time())), ':', 5);
-                    $this->doSave(array('@'.$this->namespace => $this->namespaceVersion), 0);
+                    $this->doSave(['@'.$this->namespace => $this->namespaceVersion], 0);
                 }
             } catch (\Exception $e) {
             }
diff --git a/src/Symfony/Component/Cache/Traits/ApcuTrait.php b/src/Symfony/Component/Cache/Traits/ApcuTrait.php
index c40afdc924bf..88dd22a91e68 100644
--- a/src/Symfony/Component/Cache/Traits/ApcuTrait.php
+++ b/src/Symfony/Component/Cache/Traits/ApcuTrait.php
@@ -52,7 +52,7 @@ private function init($namespace, $defaultLifetime, $version)
     protected function doFetch(array $ids)
     {
         try {
-            foreach (apcu_fetch($ids, $ok) ?: array() as $k => $v) {
+            foreach (apcu_fetch($ids, $ok) ?: [] as $k => $v) {
                 if (null !== $v || $ok) {
                     yield $k => $v;
                 }
diff --git a/src/Symfony/Component/Cache/Traits/ArrayTrait.php b/src/Symfony/Component/Cache/Traits/ArrayTrait.php
index 88385ed480f3..0a60968e9b39 100644
--- a/src/Symfony/Component/Cache/Traits/ArrayTrait.php
+++ b/src/Symfony/Component/Cache/Traits/ArrayTrait.php
@@ -24,8 +24,8 @@ trait ArrayTrait
     use LoggerAwareTrait;
 
     private $storeSerialized;
-    private $values = array();
-    private $expiries = array();
+    private $values = [];
+    private $expiries = [];
 
     /**
      * Returns all cached values, with cache miss as null.
@@ -52,7 +52,7 @@ public function hasItem($key)
      */
     public function clear()
     {
-        $this->values = $this->expiries = array();
+        $this->values = $this->expiries = [];
 
         return true;
     }
@@ -92,7 +92,7 @@ private function generateItems(array $keys, $now, $f)
                     $isHit = false;
                 }
             } catch (\Exception $e) {
-                CacheItem::log($this->logger, 'Failed to unserialize key "{key}"', array('key' => $key, 'exception' => $e));
+                CacheItem::log($this->logger, 'Failed to unserialize key "{key}"', ['key' => $key, 'exception' => $e]);
                 $this->values[$key] = $value = null;
                 $isHit = false;
             }
diff --git a/src/Symfony/Component/Cache/Traits/FilesystemTrait.php b/src/Symfony/Component/Cache/Traits/FilesystemTrait.php
index 23974b3bc548..3e0dc86bd1cf 100644
--- a/src/Symfony/Component/Cache/Traits/FilesystemTrait.php
+++ b/src/Symfony/Component/Cache/Traits/FilesystemTrait.php
@@ -52,7 +52,7 @@ public function prune()
      */
     protected function doFetch(array $ids)
     {
-        $values = array();
+        $values = [];
         $now = time();
 
         foreach ($ids as $id) {
@@ -83,7 +83,7 @@ protected function doHave($id)
     {
         $file = $this->getFile($id);
 
-        return file_exists($file) && (@filemtime($file) > time() || $this->doFetch(array($id)));
+        return file_exists($file) && (@filemtime($file) > time() || $this->doFetch([$id]));
     }
 
     /**
diff --git a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
index 8160f1411616..3a073e772c94 100644
--- a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
+++ b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
@@ -22,12 +22,12 @@
  */
 trait MemcachedTrait
 {
-    private static $defaultClientOptions = array(
+    private static $defaultClientOptions = [
         'persistent_id' => null,
         'username' => null,
         'password' => null,
         'serializer' => 'php',
-    );
+    ];
 
     private $client;
     private $lazyClient;
@@ -73,10 +73,10 @@ private function init(\Memcached $client, $namespace, $defaultLifetime)
      *
      * @throws \ErrorException When invalid options or servers are provided
      */
-    public static function createConnection($servers, array $options = array())
+    public static function createConnection($servers, array $options = [])
     {
         if (\is_string($servers)) {
-            $servers = array($servers);
+            $servers = [$servers];
         } elseif (!\is_array($servers)) {
             throw new InvalidArgumentException(sprintf('MemcachedAdapter::createClient() expects array or string as first argument, %s given.', \gettype($servers)));
         }
@@ -100,7 +100,7 @@ public static function createConnection($servers, array $options = array())
                 }
                 $params = preg_replace_callback('#^memcached://(?:([^@]*+)@)?#', function ($m) use (&$username, &$password) {
                     if (!empty($m[1])) {
-                        list($username, $password) = explode(':', $m[1], 2) + array(1 => null);
+                        list($username, $password) = explode(':', $m[1], 2) + [1 => null];
                     }
 
                     return 'file://';
@@ -115,18 +115,18 @@ public static function createConnection($servers, array $options = array())
                     $params['weight'] = $m[1];
                     $params['path'] = substr($params['path'], 0, -\strlen($m[0]));
                 }
-                $params += array(
+                $params += [
                     'host' => isset($params['host']) ? $params['host'] : $params['path'],
                     'port' => isset($params['host']) ? 11211 : null,
                     'weight' => 0,
-                );
+                ];
                 if (isset($params['query'])) {
                     parse_str($params['query'], $query);
                     $params += $query;
                     $options = $query + $options;
                 }
 
-                $servers[$i] = array($params['host'], $params['port'], $params['weight']);
+                $servers[$i] = [$params['host'], $params['port'], $params['weight']];
             }
 
             // set client's options
@@ -154,12 +154,12 @@ public static function createConnection($servers, array $options = array())
 
             // set client's servers, taking care of persistent connections
             if (!$client->isPristine()) {
-                $oldServers = array();
+                $oldServers = [];
                 foreach ($client->getServerList() as $server) {
-                    $oldServers[] = array($server['host'], $server['port']);
+                    $oldServers[] = [$server['host'], $server['port']];
                 }
 
-                $newServers = array();
+                $newServers = [];
                 foreach ($servers as $server) {
                     if (1 < \count($server)) {
                         $server = array_values($server);
@@ -199,7 +199,7 @@ protected function doSave(array $values, $lifetime)
             $lifetime += time();
         }
 
-        $encodedValues = array();
+        $encodedValues = [];
         foreach ($values as $key => $value) {
             $encodedValues[rawurlencode($key)] = $value;
         }
@@ -218,7 +218,7 @@ protected function doFetch(array $ids)
 
             $encodedResult = $this->checkResultCode($this->getClient()->getMulti($encodedIds));
 
-            $result = array();
+            $result = [];
             foreach ($encodedResult as $key => $value) {
                 $result[rawurldecode($key)] = $value;
             }
diff --git a/src/Symfony/Component/Cache/Traits/PdoTrait.php b/src/Symfony/Component/Cache/Traits/PdoTrait.php
index a22714c80ff6..b190fef8b56a 100644
--- a/src/Symfony/Component/Cache/Traits/PdoTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PdoTrait.php
@@ -33,7 +33,7 @@ trait PdoTrait
     private $timeCol = 'item_time';
     private $username = '';
     private $password = '';
-    private $connectionOptions = array();
+    private $connectionOptions = [];
     private $namespace;
 
     private function init($connOrDsn, $namespace, $defaultLifetime, array $options)
@@ -85,24 +85,24 @@ public function createTable()
         $conn = $this->getConnection();
 
         if ($conn instanceof Connection) {
-            $types = array(
+            $types = [
                 'mysql' => 'binary',
                 'sqlite' => 'text',
                 'pgsql' => 'string',
                 'oci' => 'string',
                 'sqlsrv' => 'string',
-            );
+            ];
             if (!isset($types[$this->driver])) {
                 throw new \DomainException(sprintf('Creating the cache table is currently not implemented for PDO driver "%s".', $this->driver));
             }
 
             $schema = new Schema();
             $table = $schema->createTable($this->table);
-            $table->addColumn($this->idCol, $types[$this->driver], array('length' => 255));
-            $table->addColumn($this->dataCol, 'blob', array('length' => 16777215));
-            $table->addColumn($this->lifetimeCol, 'integer', array('unsigned' => true, 'notnull' => false));
-            $table->addColumn($this->timeCol, 'integer', array('unsigned' => true));
-            $table->setPrimaryKey(array($this->idCol));
+            $table->addColumn($this->idCol, $types[$this->driver], ['length' => 255]);
+            $table->addColumn($this->dataCol, 'blob', ['length' => 16777215]);
+            $table->addColumn($this->lifetimeCol, 'integer', ['unsigned' => true, 'notnull' => false]);
+            $table->addColumn($this->timeCol, 'integer', ['unsigned' => true]);
+            $table->setPrimaryKey([$this->idCol]);
 
             foreach ($schema->toSql($conn->getDatabasePlatform()) as $sql) {
                 $conn->exec($sql);
@@ -166,7 +166,7 @@ public function prune()
     protected function doFetch(array $ids)
     {
         $now = time();
-        $expired = array();
+        $expired = [];
 
         $sql = str_pad('', (\count($ids) << 1) - 1, '?,');
         $sql = "SELECT $this->idCol, CASE WHEN $this->lifetimeCol IS NULL OR $this->lifetimeCol + $this->timeCol > ? THEN $this->dataCol ELSE NULL END FROM $this->table WHERE $this->idCol IN ($sql)";
@@ -252,8 +252,8 @@ protected function doDelete(array $ids)
      */
     protected function doSave(array $values, $lifetime)
     {
-        $serialized = array();
-        $failed = array();
+        $serialized = [];
+        $failed = [];
 
         foreach ($values as $id => $value) {
             try {
diff --git a/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php b/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
index 65dded87c277..9845701ab4b0 100644
--- a/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
@@ -116,7 +116,7 @@ public function warmUp(array $values)
      */
     public function clear()
     {
-        $this->values = array();
+        $this->values = [];
 
         $cleared = @unlink($this->file) || !file_exists($this->file);
 
@@ -132,7 +132,7 @@ private function initialize()
             $zmb = ini_set('zend.detect_unicode', 0);
         }
         try {
-            $this->values = file_exists($this->file) ? (include $this->file ?: array()) : array();
+            $this->values = file_exists($this->file) ? (include $this->file ?: []) : [];
         } finally {
             if ($this->zendDetectUnicode) {
                 ini_set('zend.detect_unicode', $zmb);
diff --git a/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php b/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
index b15ae8fce734..36c614fe65bc 100644
--- a/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
@@ -67,7 +67,7 @@ public function prune()
      */
     protected function doFetch(array $ids)
     {
-        $values = array();
+        $values = [];
         $now = time();
 
         if ($this->zendDetectUnicode) {
@@ -109,7 +109,7 @@ protected function doFetch(array $ids)
      */
     protected function doHave($id)
     {
-        return (bool) $this->doFetch(array($id));
+        return (bool) $this->doFetch([$id]);
     }
 
     /**
@@ -118,7 +118,7 @@ protected function doHave($id)
     protected function doSave(array $values, $lifetime)
     {
         $ok = true;
-        $data = array($lifetime ? time() + $lifetime : PHP_INT_MAX, '');
+        $data = [$lifetime ? time() + $lifetime : PHP_INT_MAX, ''];
         $allowCompile = 'cli' !== \PHP_SAPI || filter_var(ini_get('opcache.enable_cli'), FILTER_VALIDATE_BOOLEAN);
 
         foreach ($values as $key => $value) {
diff --git a/src/Symfony/Component/Cache/Traits/RedisProxy.php b/src/Symfony/Component/Cache/Traits/RedisProxy.php
index b328f94cd868..98ea3aba766d 100644
--- a/src/Symfony/Component/Cache/Traits/RedisProxy.php
+++ b/src/Symfony/Component/Cache/Traits/RedisProxy.php
@@ -32,7 +32,7 @@ public function __call($method, array $args)
     {
         $this->ready ?: $this->ready = $this->initializer->__invoke($this->redis);
 
-        return \call_user_func_array(array($this->redis, $method), $args);
+        return \call_user_func_array([$this->redis, $method], $args);
     }
 
     public function hscan($strKey, &$iIterator, $strPattern = null, $iCount = null)
diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
index 77e3decf50a0..a637be808003 100644
--- a/src/Symfony/Component/Cache/Traits/RedisTrait.php
+++ b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -27,7 +27,7 @@
  */
 trait RedisTrait
 {
-    private static $defaultConnectionOptions = array(
+    private static $defaultConnectionOptions = [
         'class' => null,
         'persistent' => 0,
         'persistent_id' => null,
@@ -35,7 +35,7 @@ trait RedisTrait
         'read_timeout' => 0,
         'retry_interval' => 0,
         'lazy' => false,
-    );
+    ];
     private $redis;
 
     /**
@@ -73,7 +73,7 @@ private function init($redisClient, $namespace = '', $defaultLifetime = 0)
      *
      * @return \Redis|\Predis\Client According to the "class" option
      */
-    public static function createConnection($dsn, array $options = array())
+    public static function createConnection($dsn, array $options = [])
     {
         if (0 !== strpos($dsn, 'redis://')) {
             throw new InvalidArgumentException(sprintf('Invalid Redis DSN: %s does not start with "redis://"', $dsn));
@@ -100,11 +100,11 @@ public static function createConnection($dsn, array $options = array())
         } else {
             $scheme = 'unix';
         }
-        $params += array(
+        $params += [
             'host' => isset($params['host']) ? $params['host'] : $params['path'],
             'port' => isset($params['host']) ? 6379 : null,
             'dbindex' => 0,
-        );
+        ];
         if (isset($params['query'])) {
             parse_str($params['query'], $query);
             $params += $query;
@@ -172,7 +172,7 @@ protected function doFetch(array $ids)
         if ($ids) {
             $values = $this->pipeline(function () use ($ids) {
                 foreach ($ids as $id) {
-                    yield 'get' => array($id);
+                    yield 'get' => [$id];
                 }
             });
             foreach ($values as $id => $v) {
@@ -200,15 +200,15 @@ protected function doClear($namespace)
         // This means old keys are not really removed until they expire and may need garbage collection.
 
         $cleared = true;
-        $hosts = array($this->redis);
-        $evalArgs = array(array($namespace), 0);
+        $hosts = [$this->redis];
+        $evalArgs = [[$namespace], 0];
 
         if ($this->redis instanceof \Predis\Client) {
-            $evalArgs = array(0, $namespace);
+            $evalArgs = [0, $namespace];
 
             $connection = $this->redis->getConnection();
             if ($connection instanceof PredisCluster) {
-                $hosts = array();
+                $hosts = [];
                 foreach ($connection as $c) {
                     $hosts[] = new \Predis\Client($c);
                 }
@@ -216,7 +216,7 @@ protected function doClear($namespace)
                 return false;
             }
         } elseif ($this->redis instanceof \RedisArray) {
-            $hosts = array();
+            $hosts = [];
             foreach ($this->redis->_hosts() as $host) {
                 $hosts[] = $this->redis->_instance($host);
             }
@@ -273,8 +273,8 @@ protected function doDelete(array $ids)
      */
     protected function doSave(array $values, $lifetime)
     {
-        $serialized = array();
-        $failed = array();
+        $serialized = [];
+        $failed = [];
 
         foreach ($values as $id => $value) {
             try {
@@ -291,9 +291,9 @@ protected function doSave(array $values, $lifetime)
         $results = $this->pipeline(function () use ($serialized, $lifetime) {
             foreach ($serialized as $id => $value) {
                 if (0 >= $lifetime) {
-                    yield 'set' => array($id, $value);
+                    yield 'set' => [$id, $value];
                 } else {
-                    yield 'setEx' => array($id, $lifetime, $value);
+                    yield 'setEx' => [$id, $lifetime, $value];
                 }
             }
         });
@@ -308,24 +308,24 @@ protected function doSave(array $values, $lifetime)
 
     private function pipeline(\Closure $generator)
     {
-        $ids = array();
+        $ids = [];
 
         if ($this->redis instanceof \Predis\Client && !$this->redis->getConnection() instanceof ClusterInterface) {
             $results = $this->redis->pipeline(function ($redis) use ($generator, &$ids) {
                 foreach ($generator() as $command => $args) {
-                    \call_user_func_array(array($redis, $command), $args);
+                    \call_user_func_array([$redis, $command], $args);
                     $ids[] = $args[0];
                 }
             });
         } elseif ($this->redis instanceof \RedisArray) {
-            $connections = $results = $ids = array();
+            $connections = $results = $ids = [];
             foreach ($generator() as $command => $args) {
                 if (!isset($connections[$h = $this->redis->_target($args[0])])) {
-                    $connections[$h] = array($this->redis->_instance($h), -1);
+                    $connections[$h] = [$this->redis->_instance($h), -1];
                     $connections[$h][0]->multi(\Redis::PIPELINE);
                 }
-                \call_user_func_array(array($connections[$h][0], $command), $args);
-                $results[] = array($h, ++$connections[$h][1]);
+                \call_user_func_array([$connections[$h][0], $command], $args);
+                $results[] = [$h, ++$connections[$h][1]];
                 $ids[] = $args[0];
             }
             foreach ($connections as $h => $c) {
@@ -338,15 +338,15 @@ private function pipeline(\Closure $generator)
             // phpredis & predis don't support pipelining with RedisCluster
             // see https://github.com/phpredis/phpredis/blob/develop/cluster.markdown#pipelining
             // see https://github.com/nrk/predis/issues/267#issuecomment-123781423
-            $results = array();
+            $results = [];
             foreach ($generator() as $command => $args) {
-                $results[] = \call_user_func_array(array($this->redis, $command), $args);
+                $results[] = \call_user_func_array([$this->redis, $command], $args);
                 $ids[] = $args[0];
             }
         } else {
             $this->redis->multi(\Redis::PIPELINE);
             foreach ($generator() as $command => $args) {
-                \call_user_func_array(array($this->redis, $command), $args);
+                \call_user_func_array([$this->redis, $command], $args);
                 $ids[] = $args[0];
             }
             $results = $this->redis->exec();
diff --git a/src/Symfony/Component/ClassLoader/ApcClassLoader.php b/src/Symfony/Component/ClassLoader/ApcClassLoader.php
index 0129c480f394..83038d749f78 100644
--- a/src/Symfony/Component/ClassLoader/ApcClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/ApcClassLoader.php
@@ -88,7 +88,7 @@ public function __construct($prefix, $decorated)
      */
     public function register($prepend = false)
     {
-        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+        spl_autoload_register([$this, 'loadClass'], true, $prepend);
     }
 
     /**
@@ -96,7 +96,7 @@ public function register($prepend = false)
      */
     public function unregister()
     {
-        spl_autoload_unregister(array($this, 'loadClass'));
+        spl_autoload_unregister([$this, 'loadClass']);
     }
 
     /**
@@ -138,6 +138,6 @@ public function findFile($class)
      */
     public function __call($method, $args)
     {
-        return \call_user_func_array(array($this->decorated, $method), $args);
+        return \call_user_func_array([$this->decorated, $method], $args);
     }
 }
diff --git a/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php b/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
index 3fd75c24544d..5edab01cbd49 100644
--- a/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
+++ b/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
@@ -108,7 +108,7 @@ public static function load($classes, $cacheDir, $name, $autoReload, $adaptive =
 
         if ($autoReload) {
             // save the resources
-            self::writeCacheFile($metadata, serialize(array(array_values($files), $classes)));
+            self::writeCacheFile($metadata, serialize([array_values($files), $classes]));
         }
     }
 
@@ -125,7 +125,7 @@ public static function load($classes, $cacheDir, $name, $autoReload, $adaptive =
      */
     public static function inline($classes, $cache, array $excluded)
     {
-        $declared = array();
+        $declared = [];
         foreach (self::getOrderedClasses($excluded) as $class) {
             $declared[$class->getName()] = true;
         }
@@ -147,7 +147,7 @@ public static function inline($classes, $cache, array $excluded)
         $dontInlineRegex = str_replace('.', $spacesRegex, $dontInlineRegex);
 
         $cacheDir = explode('/', str_replace(\DIRECTORY_SEPARATOR, '/', $cacheDir));
-        $files = array();
+        $files = [];
         $content = '';
         foreach (self::getOrderedClasses($classes) as $class) {
             if (isset($declared[$class->getName()])) {
@@ -176,7 +176,7 @@ public static function inline($classes, $cache, array $excluded)
 
                 $c = "\nnamespace {require $file;}";
             } else {
-                $c = preg_replace(array('/^\s*<\?php/', '/\?>\s*$/'), '', $c);
+                $c = preg_replace(['/^\s*<\?php/', '/\?>\s*$/'], '', $c);
 
                 // fakes namespace declaration for global code
                 if (!$class->inNamespace()) {
@@ -220,7 +220,7 @@ public static function fixNamespaceDeclarations($source)
             $token = $tokens[$i];
             if (!isset($token[1]) || 'b"' === $token) {
                 $rawChunk .= $token;
-            } elseif (\in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
+            } elseif (\in_array($token[0], [T_COMMENT, T_DOC_COMMENT])) {
                 // strip comments
                 continue;
             } elseif (T_NAMESPACE === $token[0]) {
@@ -230,7 +230,7 @@ public static function fixNamespaceDeclarations($source)
                 $rawChunk .= $token[1];
 
                 // namespace name and whitespaces
-                while (isset($tokens[++$i][1]) && \in_array($tokens[$i][0], array(T_WHITESPACE, T_NS_SEPARATOR, T_STRING))) {
+                while (isset($tokens[++$i][1]) && \in_array($tokens[$i][0], [T_WHITESPACE, T_NS_SEPARATOR, T_STRING])) {
                     $rawChunk .= $tokens[$i][1];
                 }
                 if ('{' === $tokens[$i]) {
@@ -289,8 +289,8 @@ public static function enableTokenizer($bool)
     private static function compressCode($code)
     {
         return preg_replace(
-            array('/^\s+/m', '/\s+$/m', '/([\n\r]+ *[\n\r]+)+/', '/[ \t]+/'),
-            array('', '', "\n", ' '),
+            ['/^\s+/m', '/\s+$/m', '/([\n\r]+ *[\n\r]+)+/', '/[ \t]+/'],
+            ['', '', "\n", ' '],
             $code
         );
     }
@@ -330,8 +330,8 @@ private static function writeCacheFile($file, $content)
      */
     private static function getOrderedClasses(array $classes)
     {
-        $map = array();
-        self::$seen = array();
+        $map = [];
+        self::$seen = [];
         foreach ($classes as $class) {
             try {
                 $reflectionClass = new \ReflectionClass($class);
@@ -348,12 +348,12 @@ private static function getOrderedClasses(array $classes)
     private static function getClassHierarchy(\ReflectionClass $class)
     {
         if (isset(self::$seen[$class->getName()])) {
-            return array();
+            return [];
         }
 
         self::$seen[$class->getName()] = true;
 
-        $classes = array($class);
+        $classes = [$class];
         $parent = $class;
         while (($parent = $parent->getParentClass()) && $parent->isUserDefined() && !isset(self::$seen[$parent->getName()])) {
             self::$seen[$parent->getName()] = true;
@@ -361,7 +361,7 @@ private static function getClassHierarchy(\ReflectionClass $class)
             array_unshift($classes, $parent);
         }
 
-        $traits = array();
+        $traits = [];
 
         foreach ($classes as $c) {
             foreach (self::resolveDependencies(self::computeTraitDeps($c), $c) as $trait) {
@@ -376,7 +376,7 @@ private static function getClassHierarchy(\ReflectionClass $class)
 
     private static function getInterfaces(\ReflectionClass $class)
     {
-        $classes = array();
+        $classes = [];
 
         foreach ($class->getInterfaces() as $interface) {
             $classes = array_merge($classes, self::getInterfaces($interface));
@@ -394,7 +394,7 @@ private static function getInterfaces(\ReflectionClass $class)
     private static function computeTraitDeps(\ReflectionClass $class)
     {
         $traits = $class->getTraits();
-        $deps = array($class->getName() => $traits);
+        $deps = [$class->getName() => $traits];
         while ($trait = array_pop($traits)) {
             if ($trait->isUserDefined() && !isset(self::$seen[$trait->getName()])) {
                 self::$seen[$trait->getName()] = true;
diff --git a/src/Symfony/Component/ClassLoader/ClassLoader.php b/src/Symfony/Component/ClassLoader/ClassLoader.php
index 52cff3bb4c5f..d727278ee81b 100644
--- a/src/Symfony/Component/ClassLoader/ClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/ClassLoader.php
@@ -43,8 +43,8 @@
  */
 class ClassLoader
 {
-    private $prefixes = array();
-    private $fallbackDirs = array();
+    private $prefixes = [];
+    private $fallbackDirs = [];
     private $useIncludePath = false;
 
     /**
@@ -136,7 +136,7 @@ public function getUseIncludePath()
      */
     public function register($prepend = false)
     {
-        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+        spl_autoload_register([$this, 'loadClass'], true, $prepend);
     }
 
     /**
@@ -144,7 +144,7 @@ public function register($prepend = false)
      */
     public function unregister()
     {
-        spl_autoload_unregister(array($this, 'loadClass'));
+        spl_autoload_unregister([$this, 'loadClass']);
     }
 
     /**
diff --git a/src/Symfony/Component/ClassLoader/ClassMapGenerator.php b/src/Symfony/Component/ClassLoader/ClassMapGenerator.php
index 6a96886cf183..f32ca3ca2737 100644
--- a/src/Symfony/Component/ClassLoader/ClassMapGenerator.php
+++ b/src/Symfony/Component/ClassLoader/ClassMapGenerator.php
@@ -31,7 +31,7 @@ class ClassMapGenerator
     public static function dump($dirs, $file)
     {
         $dirs = (array) $dirs;
-        $maps = array();
+        $maps = [];
 
         foreach ($dirs as $dir) {
             $maps = array_merge($maps, static::createMap($dir));
@@ -53,7 +53,7 @@ public static function createMap($dir)
             $dir = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($dir));
         }
 
-        $map = array();
+        $map = [];
 
         foreach ($dir as $file) {
             if (!$file->isFile()) {
@@ -93,7 +93,7 @@ private static function findClasses($path)
         $contents = file_get_contents($path);
         $tokens = token_get_all($contents);
 
-        $classes = array();
+        $classes = [];
 
         $namespace = '';
         for ($i = 0; isset($tokens[$i]); ++$i) {
@@ -110,7 +110,7 @@ private static function findClasses($path)
                     $namespace = '';
                     // If there is a namespace, extract it
                     while (isset($tokens[++$i][1])) {
-                        if (\in_array($tokens[$i][0], array(T_STRING, T_NS_SEPARATOR))) {
+                        if (\in_array($tokens[$i][0], [T_STRING, T_NS_SEPARATOR])) {
                             $namespace .= $tokens[$i][1];
                         }
                     }
@@ -129,7 +129,7 @@ private static function findClasses($path)
                         if (T_DOUBLE_COLON === $tokens[$j][0]) {
                             $isClassConstant = true;
                             break;
-                        } elseif (!\in_array($tokens[$j][0], array(T_WHITESPACE, T_DOC_COMMENT, T_COMMENT))) {
+                        } elseif (!\in_array($tokens[$j][0], [T_WHITESPACE, T_DOC_COMMENT, T_COMMENT])) {
                             break;
                         }
                     }
diff --git a/src/Symfony/Component/ClassLoader/MapClassLoader.php b/src/Symfony/Component/ClassLoader/MapClassLoader.php
index 7b0dbba43e21..a9719d6bd268 100644
--- a/src/Symfony/Component/ClassLoader/MapClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/MapClassLoader.php
@@ -22,7 +22,7 @@
  */
 class MapClassLoader
 {
-    private $map = array();
+    private $map = [];
 
     /**
      * @param array $map A map where keys are classes and values the absolute file path
@@ -39,7 +39,7 @@ public function __construct(array $map)
      */
     public function register($prepend = false)
     {
-        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+        spl_autoload_register([$this, 'loadClass'], true, $prepend);
     }
 
     /**
diff --git a/src/Symfony/Component/ClassLoader/Psr4ClassLoader.php b/src/Symfony/Component/ClassLoader/Psr4ClassLoader.php
index d5b8d140a731..7ea521d82e6e 100644
--- a/src/Symfony/Component/ClassLoader/Psr4ClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/Psr4ClassLoader.php
@@ -24,7 +24,7 @@
  */
 class Psr4ClassLoader
 {
-    private $prefixes = array();
+    private $prefixes = [];
 
     /**
      * @param string $prefix
@@ -34,7 +34,7 @@ public function addPrefix($prefix, $baseDir)
     {
         $prefix = trim($prefix, '\\').'\\';
         $baseDir = rtrim($baseDir, \DIRECTORY_SEPARATOR).\DIRECTORY_SEPARATOR;
-        $this->prefixes[] = array($prefix, $baseDir);
+        $this->prefixes[] = [$prefix, $baseDir];
     }
 
     /**
@@ -81,7 +81,7 @@ public function loadClass($class)
      */
     public function register($prepend = false)
     {
-        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+        spl_autoload_register([$this, 'loadClass'], true, $prepend);
     }
 
     /**
@@ -89,6 +89,6 @@ public function register($prepend = false)
      */
     public function unregister()
     {
-        spl_autoload_unregister(array($this, 'loadClass'));
+        spl_autoload_unregister([$this, 'loadClass']);
     }
 }
diff --git a/src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php b/src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php
index 70896f313630..6706acbd3629 100644
--- a/src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php
+++ b/src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php
@@ -62,10 +62,10 @@ public function testLoadClass($className, $testClassName, $message)
 
     public function getLoadClassTests()
     {
-        return array(
-           array('\\Apc\\Namespaced\\Foo', 'Apc\\Namespaced\\Foo',   '->loadClass() loads Apc\Namespaced\Foo class'),
-           array('Apc_Pearlike_Foo',    'Apc_Pearlike_Foo',      '->loadClass() loads Apc_Pearlike_Foo class'),
-        );
+        return [
+           ['\\Apc\\Namespaced\\Foo', 'Apc\\Namespaced\\Foo',   '->loadClass() loads Apc\Namespaced\Foo class'],
+           ['Apc_Pearlike_Foo',    'Apc_Pearlike_Foo',      '->loadClass() loads Apc_Pearlike_Foo class'],
+        ];
     }
 
     /**
@@ -76,7 +76,7 @@ public function testLoadClassFromFallback($className, $testClassName, $message)
         $loader = new ClassLoader();
         $loader->addPrefix('Apc\Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
         $loader->addPrefix('Apc_Pearlike_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('', array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/fallback'));
+        $loader->addPrefix('', [__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/fallback']);
 
         $loader = new ApcClassLoader('test.prefix.fallback', $loader);
         $loader->loadClass($testClassName);
@@ -86,12 +86,12 @@ public function testLoadClassFromFallback($className, $testClassName, $message)
 
     public function getLoadClassFromFallbackTests()
     {
-        return array(
-           array('\\Apc\\Namespaced\\Baz',    'Apc\\Namespaced\\Baz',    '->loadClass() loads Apc\Namespaced\Baz class'),
-           array('Apc_Pearlike_Baz',       'Apc_Pearlike_Baz',       '->loadClass() loads Apc_Pearlike_Baz class'),
-           array('\\Apc\\Namespaced\\FooBar', 'Apc\\Namespaced\\FooBar', '->loadClass() loads Apc\Namespaced\Baz class from fallback dir'),
-           array('Apc_Pearlike_FooBar',    'Apc_Pearlike_FooBar',    '->loadClass() loads Apc_Pearlike_Baz class from fallback dir'),
-       );
+        return [
+           ['\\Apc\\Namespaced\\Baz',    'Apc\\Namespaced\\Baz',    '->loadClass() loads Apc\Namespaced\Baz class'],
+           ['Apc_Pearlike_Baz',       'Apc_Pearlike_Baz',       '->loadClass() loads Apc_Pearlike_Baz class'],
+           ['\\Apc\\Namespaced\\FooBar', 'Apc\\Namespaced\\FooBar', '->loadClass() loads Apc\Namespaced\Baz class from fallback dir'],
+           ['Apc_Pearlike_FooBar',    'Apc_Pearlike_FooBar',    '->loadClass() loads Apc_Pearlike_Baz class from fallback dir'],
+       ];
     }
 
     /**
@@ -110,40 +110,40 @@ public function testLoadClassNamespaceCollision($namespaces, $className, $messag
 
     public function getLoadClassNamespaceCollisionTests()
     {
-        return array(
-           array(
-               array(
+        return [
+           [
+               [
                    'Apc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
                    'Apc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
-               ),
+               ],
                'Apc\NamespaceCollision\A\Foo',
                '->loadClass() loads NamespaceCollision\A\Foo from alpha.',
-           ),
-           array(
-               array(
+           ],
+           [
+               [
                    'Apc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
                    'Apc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
-               ),
+               ],
                'Apc\NamespaceCollision\A\Bar',
                '->loadClass() loads NamespaceCollision\A\Bar from alpha.',
-           ),
-           array(
-               array(
+           ],
+           [
+               [
                    'Apc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
                    'Apc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
-               ),
+               ],
                'Apc\NamespaceCollision\A\B\Foo',
                '->loadClass() loads NamespaceCollision\A\B\Foo from beta.',
-           ),
-           array(
-               array(
+           ],
+           [
+               [
                    'Apc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
                    'Apc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
-               ),
+               ],
                'Apc\NamespaceCollision\A\B\Bar',
                '->loadClass() loads NamespaceCollision\A\B\Bar from beta.',
-           ),
-        );
+           ],
+        ];
     }
 
     /**
@@ -162,39 +162,39 @@ public function testLoadClassPrefixCollision($prefixes, $className, $message)
 
     public function getLoadClassPrefixCollisionTests()
     {
-        return array(
-           array(
-               array(
+        return [
+           [
+               [
                    'ApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
                    'ApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
-               ),
+               ],
                'ApcPrefixCollision_A_Foo',
                '->loadClass() loads ApcPrefixCollision_A_Foo from alpha.',
-           ),
-           array(
-               array(
+           ],
+           [
+               [
                    'ApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
                    'ApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
-               ),
+               ],
                'ApcPrefixCollision_A_Bar',
                '->loadClass() loads ApcPrefixCollision_A_Bar from alpha.',
-           ),
-           array(
-               array(
+           ],
+           [
+               [
                    'ApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
                    'ApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
-               ),
+               ],
                'ApcPrefixCollision_A_B_Foo',
                '->loadClass() loads ApcPrefixCollision_A_B_Foo from beta.',
-           ),
-           array(
-               array(
+           ],
+           [
+               [
                    'ApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
                    'ApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
-               ),
+               ],
                'ApcPrefixCollision_A_B_Bar',
                '->loadClass() loads ApcPrefixCollision_A_B_Bar from beta.',
-           ),
-        );
+           ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ClassLoader/Tests/ClassCollectionLoaderTest.php b/src/Symfony/Component/ClassLoader/Tests/ClassCollectionLoaderTest.php
index 15a11053c6c0..816f3c39451f 100644
--- a/src/Symfony/Component/ClassLoader/Tests/ClassCollectionLoaderTest.php
+++ b/src/Symfony/Component/ClassLoader/Tests/ClassCollectionLoaderTest.php
@@ -34,17 +34,17 @@ public function testTraitDependencies()
         $m = $r->getMethod('getOrderedClasses');
         $m->setAccessible(true);
 
-        $ordered = $m->invoke(null, array('CTFoo'));
+        $ordered = $m->invoke(null, ['CTFoo']);
 
         $this->assertEquals(
-            array('TD', 'TC', 'TB', 'TA', 'TZ', 'CTFoo'),
+            ['TD', 'TC', 'TB', 'TA', 'TZ', 'CTFoo'],
             array_map(function ($class) { return $class->getName(); }, $ordered)
         );
 
-        $ordered = $m->invoke(null, array('CTBar'));
+        $ordered = $m->invoke(null, ['CTBar']);
 
         $this->assertEquals(
-            array('TD', 'TZ', 'TC', 'TB', 'TA', 'CTBar'),
+            ['TD', 'TZ', 'TC', 'TB', 'TA', 'CTBar'],
             array_map(function ($class) { return $class->getName(); }, $ordered)
         );
     }
@@ -54,12 +54,12 @@ public function testTraitDependencies()
      */
     public function testClassReordering(array $classes)
     {
-        $expected = array(
+        $expected = [
             'ClassesWithParents\\GInterface',
             'ClassesWithParents\\CInterface',
             'ClassesWithParents\\B',
             'ClassesWithParents\\A',
-        );
+        ];
 
         $r = new \ReflectionClass('Symfony\Component\ClassLoader\ClassCollectionLoader');
         $m = $r->getMethod('getOrderedClasses');
@@ -72,27 +72,27 @@ public function testClassReordering(array $classes)
 
     public function getDifferentOrders()
     {
-        return array(
-            array(array(
+        return [
+            [[
                 'ClassesWithParents\\A',
                 'ClassesWithParents\\CInterface',
                 'ClassesWithParents\\GInterface',
                 'ClassesWithParents\\B',
-            )),
-            array(array(
+            ]],
+            [[
                 'ClassesWithParents\\B',
                 'ClassesWithParents\\A',
                 'ClassesWithParents\\CInterface',
-            )),
-            array(array(
+            ]],
+            [[
                 'ClassesWithParents\\CInterface',
                 'ClassesWithParents\\B',
                 'ClassesWithParents\\A',
-            )),
-            array(array(
+            ]],
+            [[
                 'ClassesWithParents\\A',
-            )),
-        );
+            ]],
+        ];
     }
 
     /**
@@ -106,7 +106,7 @@ public function testClassWithTraitsReordering(array $classes)
         require_once __DIR__.'/Fixtures/ClassesWithParents/D.php';
         require_once __DIR__.'/Fixtures/ClassesWithParents/E.php';
 
-        $expected = array(
+        $expected = [
             'ClassesWithParents\\GInterface',
             'ClassesWithParents\\CInterface',
             'ClassesWithParents\\ATrait',
@@ -116,7 +116,7 @@ public function testClassWithTraitsReordering(array $classes)
             'ClassesWithParents\\A',
             'ClassesWithParents\\D',
             'ClassesWithParents\\E',
-        );
+        ];
 
         $r = new \ReflectionClass('Symfony\Component\ClassLoader\ClassCollectionLoader');
         $m = $r->getMethod('getOrderedClasses');
@@ -129,15 +129,15 @@ public function testClassWithTraitsReordering(array $classes)
 
     public function getDifferentOrdersForTraits()
     {
-        return array(
-            array(array(
+        return [
+            [[
                 'ClassesWithParents\\E',
                 'ClassesWithParents\\ATrait',
-            )),
-            array(array(
+            ]],
+            [[
                 'ClassesWithParents\\E',
-            )),
-        );
+            ]],
+        ];
     }
 
     public function testFixClassWithTraitsOrdering()
@@ -146,16 +146,16 @@ public function testFixClassWithTraitsOrdering()
         require_once __DIR__.'/Fixtures/ClassesWithParents/F.php';
         require_once __DIR__.'/Fixtures/ClassesWithParents/G.php';
 
-        $classes = array(
+        $classes = [
             'ClassesWithParents\\F',
             'ClassesWithParents\\G',
-        );
+        ];
 
-        $expected = array(
+        $expected = [
             'ClassesWithParents\\CTrait',
             'ClassesWithParents\\F',
             'ClassesWithParents\\G',
-        );
+        ];
 
         $r = new \ReflectionClass('Symfony\Component\ClassLoader\ClassCollectionLoader');
         $m = $r->getMethod('getOrderedClasses');
@@ -176,14 +176,14 @@ public function testFixNamespaceDeclarations($source, $expected)
 
     public function getFixNamespaceDeclarationsData()
     {
-        return array(
-            array("namespace;\nclass Foo {}\n", "namespace\n{\nclass Foo {}\n}"),
-            array("namespace Foo;\nclass Foo {}\n", "namespace Foo\n{\nclass Foo {}\n}"),
-            array("namespace   Bar ;\nclass Foo {}\n", "namespace Bar\n{\nclass Foo {}\n}"),
-            array("namespace Foo\Bar;\nclass Foo {}\n", "namespace Foo\Bar\n{\nclass Foo {}\n}"),
-            array("namespace Foo\Bar\Bar\n{\nclass Foo {}\n}\n", "namespace Foo\Bar\Bar\n{\nclass Foo {}\n}"),
-            array("namespace\n{\nclass Foo {}\n}\n", "namespace\n{\nclass Foo {}\n}"),
-        );
+        return [
+            ["namespace;\nclass Foo {}\n", "namespace\n{\nclass Foo {}\n}"],
+            ["namespace Foo;\nclass Foo {}\n", "namespace Foo\n{\nclass Foo {}\n}"],
+            ["namespace   Bar ;\nclass Foo {}\n", "namespace Bar\n{\nclass Foo {}\n}"],
+            ["namespace Foo\Bar;\nclass Foo {}\n", "namespace Foo\Bar\n{\nclass Foo {}\n}"],
+            ["namespace Foo\Bar\Bar\n{\nclass Foo {}\n}\n", "namespace Foo\Bar\Bar\n{\nclass Foo {}\n}"],
+            ["namespace\n{\nclass Foo {}\n}\n", "namespace\n{\nclass Foo {}\n}"],
+        ];
     }
 
     /**
@@ -198,14 +198,14 @@ public function testFixNamespaceDeclarationsWithoutTokenizer($source, $expected)
 
     public function getFixNamespaceDeclarationsDataWithoutTokenizer()
     {
-        return array(
-            array("namespace;\nclass Foo {}\n", "namespace\n{\nclass Foo {}\n}\n"),
-            array("namespace Foo;\nclass Foo {}\n", "namespace Foo\n{\nclass Foo {}\n}\n"),
-            array("namespace   Bar ;\nclass Foo {}\n", "namespace   Bar\n{\nclass Foo {}\n}\n"),
-            array("namespace Foo\Bar;\nclass Foo {}\n", "namespace Foo\Bar\n{\nclass Foo {}\n}\n"),
-            array("namespace Foo\Bar\Bar\n{\nclass Foo {}\n}\n", "namespace Foo\Bar\Bar\n{\nclass Foo {}\n}\n"),
-            array("\nnamespace\n{\nclass Foo {}\n\$namespace=123;}\n", "\nnamespace\n{\nclass Foo {}\n\$namespace=123;}\n"),
-        );
+        return [
+            ["namespace;\nclass Foo {}\n", "namespace\n{\nclass Foo {}\n}\n"],
+            ["namespace Foo;\nclass Foo {}\n", "namespace Foo\n{\nclass Foo {}\n}\n"],
+            ["namespace   Bar ;\nclass Foo {}\n", "namespace   Bar\n{\nclass Foo {}\n}\n"],
+            ["namespace Foo\Bar;\nclass Foo {}\n", "namespace Foo\Bar\n{\nclass Foo {}\n}\n"],
+            ["namespace Foo\Bar\Bar\n{\nclass Foo {}\n}\n", "namespace Foo\Bar\Bar\n{\nclass Foo {}\n}\n"],
+            ["\nnamespace\n{\nclass Foo {}\n\$namespace=123;}\n", "\nnamespace\n{\nclass Foo {}\n\$namespace=123;}\n"],
+        ];
     }
 
     /**
@@ -217,7 +217,7 @@ public function testUnableToLoadClassException()
             unlink($file);
         }
 
-        ClassCollectionLoader::load(array('SomeNotExistingClass'), sys_get_temp_dir(), 'foo', false);
+        ClassCollectionLoader::load(['SomeNotExistingClass'], sys_get_temp_dir(), 'foo', false);
     }
 
     public function testCommentStripping()
@@ -227,14 +227,14 @@ public function testCommentStripping()
         }
         spl_autoload_register($r = function ($class) {
             if (0 === strpos($class, 'Namespaced') || 0 === strpos($class, 'Pearlike_')) {
-                @require_once __DIR__.'/Fixtures/'.str_replace(array('\\', '_'), '/', $class).'.php';
+                @require_once __DIR__.'/Fixtures/'.str_replace(['\\', '_'], '/', $class).'.php';
             }
         });
 
         $strictTypes = \defined('HHVM_VERSION') ? '' : "\nnamespace {require __DIR__.'/Fixtures/Namespaced/WithStrictTypes.php';}";
 
         ClassCollectionLoader::load(
-            array('Namespaced\\WithComments', 'Pearlike_WithComments', 'Namespaced\\WithDirMagic', 'Namespaced\\WithFileMagic', 'Namespaced\\WithHaltCompiler', $strictTypes ? 'Namespaced\\WithStrictTypes' : 'Namespaced\\WithComments'),
+            ['Namespaced\\WithComments', 'Pearlike_WithComments', 'Namespaced\\WithDirMagic', 'Namespaced\\WithFileMagic', 'Namespaced\\WithHaltCompiler', $strictTypes ? 'Namespaced\\WithStrictTypes' : 'Namespaced\\WithComments'],
             __DIR__,
             'bar',
             false
@@ -279,7 +279,7 @@ class Pearlike_WithComments
 namespace {require __DIR__.'/Fixtures/Namespaced/WithHaltCompiler.php';}
 EOF
             .$strictTypes,
-            str_replace(array("<?php \n", '\\\\'), array('', '/'), file_get_contents($file))
+            str_replace(["<?php \n", '\\\\'], ['', '/'], file_get_contents($file))
         );
 
         unlink($file);
@@ -291,8 +291,8 @@ public function testInline()
 
         @unlink($cache = sys_get_temp_dir().'/inline.php');
 
-        $classes = array(WarmedClass::class);
-        $excluded = array(DeclaredClass::class);
+        $classes = [WarmedClass::class];
+        $excluded = [DeclaredClass::class];
 
         ClassCollectionLoader::inline($classes, $cache, $excluded);
 
diff --git a/src/Symfony/Component/ClassLoader/Tests/ClassLoaderTest.php b/src/Symfony/Component/ClassLoader/Tests/ClassLoaderTest.php
index 1cc7c4842e58..af8a94bdbd1a 100644
--- a/src/Symfony/Component/ClassLoader/Tests/ClassLoaderTest.php
+++ b/src/Symfony/Component/ClassLoader/Tests/ClassLoaderTest.php
@@ -55,10 +55,10 @@ public function testLoadClass($className, $testClassName, $message)
 
     public function getLoadClassTests()
     {
-        return array(
-            array('\\Namespaced2\\Foo', 'Namespaced2\\Foo',   '->loadClass() loads Namespaced2\Foo class'),
-            array('\\Pearlike2_Foo',    'Pearlike2_Foo',      '->loadClass() loads Pearlike2_Foo class'),
-        );
+        return [
+            ['\\Namespaced2\\Foo', 'Namespaced2\\Foo',   '->loadClass() loads Namespaced2\Foo class'],
+            ['\\Pearlike2_Foo',    'Pearlike2_Foo',      '->loadClass() loads Pearlike2_Foo class'],
+        ];
     }
 
     /**
@@ -75,9 +75,9 @@ public function testLoadNonexistentClass($className, $testClassName, $message)
 
     public function getLoadNonexistentClassTests()
     {
-        return array(
-            array('\\Pearlike3_Bar', '\\Pearlike3_Bar', '->loadClass() loads non existing Pearlike3_Bar class with a leading slash'),
-        );
+        return [
+            ['\\Pearlike3_Bar', '\\Pearlike3_Bar', '->loadClass() loads non existing Pearlike3_Bar class with a leading slash'],
+        ];
     }
 
     public function testAddPrefixSingle()
@@ -93,8 +93,8 @@ public function testAddPrefixSingle()
     public function testAddPrefixesSingle()
     {
         $loader = new ClassLoader();
-        $loader->addPrefixes(array('Foo' => array('foo', 'foo')));
-        $loader->addPrefixes(array('Foo' => array('foo')));
+        $loader->addPrefixes(['Foo' => ['foo', 'foo']]);
+        $loader->addPrefixes(['Foo' => ['foo']]);
         $prefixes = $loader->getPrefixes();
         $this->assertArrayHasKey('Foo', $prefixes);
         $this->assertCount(1, $prefixes['Foo'], print_r($prefixes, true));
@@ -139,19 +139,19 @@ public function testLoadClassFromFallback($className, $testClassName, $message)
         $loader = new ClassLoader();
         $loader->addPrefix('Namespaced2\\', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
         $loader->addPrefix('Pearlike2_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('', array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/fallback'));
+        $loader->addPrefix('', [__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/fallback']);
         $loader->loadClass($testClassName);
         $this->assertTrue(class_exists($className), $message);
     }
 
     public function getLoadClassFromFallbackTests()
     {
-        return array(
-            array('\\Namespaced2\\Baz',    'Namespaced2\\Baz',    '->loadClass() loads Namespaced2\Baz class'),
-            array('\\Pearlike2_Baz',       'Pearlike2_Baz',       '->loadClass() loads Pearlike2_Baz class'),
-            array('\\Namespaced2\\FooBar', 'Namespaced2\\FooBar', '->loadClass() loads Namespaced2\Baz class from fallback dir'),
-            array('\\Pearlike2_FooBar',    'Pearlike2_FooBar',    '->loadClass() loads Pearlike2_Baz class from fallback dir'),
-        );
+        return [
+            ['\\Namespaced2\\Baz',    'Namespaced2\\Baz',    '->loadClass() loads Namespaced2\Baz class'],
+            ['\\Pearlike2_Baz',       'Pearlike2_Baz',       '->loadClass() loads Pearlike2_Baz class'],
+            ['\\Namespaced2\\FooBar', 'Namespaced2\\FooBar', '->loadClass() loads Namespaced2\Baz class from fallback dir'],
+            ['\\Pearlike2_FooBar',    'Pearlike2_FooBar',    '->loadClass() loads Pearlike2_Baz class from fallback dir'],
+        ];
     }
 
     /**
@@ -168,71 +168,71 @@ public function testLoadClassNamespaceCollision($namespaces, $className, $messag
 
     public function getLoadClassNamespaceCollisionTests()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'NamespaceCollision\\C' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
                     'NamespaceCollision\\C\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
-                ),
+                ],
                 'NamespaceCollision\C\Foo',
                 '->loadClass() loads NamespaceCollision\C\Foo from alpha.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'NamespaceCollision\\C\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
                     'NamespaceCollision\\C' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
-                ),
+                ],
                 'NamespaceCollision\C\Bar',
                 '->loadClass() loads NamespaceCollision\C\Bar from alpha.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'NamespaceCollision\\C' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
                     'NamespaceCollision\\C\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
-                ),
+                ],
                 'NamespaceCollision\C\B\Foo',
                 '->loadClass() loads NamespaceCollision\C\B\Foo from beta.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'NamespaceCollision\\C\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
                     'NamespaceCollision\\C' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
-                ),
+                ],
                 'NamespaceCollision\C\B\Bar',
                 '->loadClass() loads NamespaceCollision\C\B\Bar from beta.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'PrefixCollision_C_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
                     'PrefixCollision_C_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
-                ),
+                ],
                 'PrefixCollision_C_Foo',
                 '->loadClass() loads PrefixCollision_C_Foo from alpha.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'PrefixCollision_C_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
                     'PrefixCollision_C_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
-                ),
+                ],
                 'PrefixCollision_C_Bar',
                 '->loadClass() loads PrefixCollision_C_Bar from alpha.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'PrefixCollision_C_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
                     'PrefixCollision_C_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
-                ),
+                ],
                 'PrefixCollision_C_B_Foo',
                 '->loadClass() loads PrefixCollision_C_B_Foo from beta.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'PrefixCollision_C_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
                     'PrefixCollision_C_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
-                ),
+                ],
                 'PrefixCollision_C_B_Bar',
                 '->loadClass() loads PrefixCollision_C_B_Bar from beta.',
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ClassLoader/Tests/ClassMapGeneratorTest.php b/src/Symfony/Component/ClassLoader/Tests/ClassMapGeneratorTest.php
index ad6a1b86ff95..91106601839e 100644
--- a/src/Symfony/Component/ClassLoader/Tests/ClassMapGeneratorTest.php
+++ b/src/Symfony/Component/ClassLoader/Tests/ClassMapGeneratorTest.php
@@ -74,8 +74,8 @@ public function testCreateMap($directory, $expected)
 
     public function getTestCreateMapTests()
     {
-        $data = array(
-            array(__DIR__.'/Fixtures/Namespaced', array(
+        $data = [
+            [__DIR__.'/Fixtures/Namespaced', [
                 'Namespaced\\Bar' => realpath(__DIR__).'/Fixtures/Namespaced/Bar.php',
                 'Namespaced\\Foo' => realpath(__DIR__).'/Fixtures/Namespaced/Foo.php',
                 'Namespaced\\Baz' => realpath(__DIR__).'/Fixtures/Namespaced/Baz.php',
@@ -84,20 +84,20 @@ public function getTestCreateMapTests()
                 'Namespaced\\WithHaltCompiler' => realpath(__DIR__).'/Fixtures/Namespaced/WithHaltCompiler.php',
                 'Namespaced\\WithDirMagic' => realpath(__DIR__).'/Fixtures/Namespaced/WithDirMagic.php',
                 'Namespaced\\WithFileMagic' => realpath(__DIR__).'/Fixtures/Namespaced/WithFileMagic.php',
-            )),
-            array(__DIR__.'/Fixtures/beta/NamespaceCollision', array(
+            ]],
+            [__DIR__.'/Fixtures/beta/NamespaceCollision', [
                 'NamespaceCollision\\A\\B\\Bar' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/A/B/Bar.php',
                 'NamespaceCollision\\A\\B\\Foo' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/A/B/Foo.php',
                 'NamespaceCollision\\C\\B\\Bar' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/C/B/Bar.php',
                 'NamespaceCollision\\C\\B\\Foo' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/C/B/Foo.php',
-            )),
-            array(__DIR__.'/Fixtures/Pearlike', array(
+            ]],
+            [__DIR__.'/Fixtures/Pearlike', [
                 'Pearlike_Foo' => realpath(__DIR__).'/Fixtures/Pearlike/Foo.php',
                 'Pearlike_Bar' => realpath(__DIR__).'/Fixtures/Pearlike/Bar.php',
                 'Pearlike_Baz' => realpath(__DIR__).'/Fixtures/Pearlike/Baz.php',
                 'Pearlike_WithComments' => realpath(__DIR__).'/Fixtures/Pearlike/WithComments.php',
-            )),
-            array(__DIR__.'/Fixtures/classmap', array(
+            ]],
+            [__DIR__.'/Fixtures/classmap', [
                 'Foo\\Bar\\A' => realpath(__DIR__).'/Fixtures/classmap/sameNsMultipleClasses.php',
                 'Foo\\Bar\\B' => realpath(__DIR__).'/Fixtures/classmap/sameNsMultipleClasses.php',
                 'A' => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
@@ -108,19 +108,19 @@ public function getTestCreateMapTests()
                 'ClassMap\\SomeInterface' => realpath(__DIR__).'/Fixtures/classmap/SomeInterface.php',
                 'ClassMap\\SomeParent' => realpath(__DIR__).'/Fixtures/classmap/SomeParent.php',
                 'ClassMap\\SomeClass' => realpath(__DIR__).'/Fixtures/classmap/SomeClass.php',
-            )),
-            array(__DIR__.'/Fixtures/php5.4', array(
+            ]],
+            [__DIR__.'/Fixtures/php5.4', [
                 'TFoo' => __DIR__.'/Fixtures/php5.4/traits.php',
                 'CFoo' => __DIR__.'/Fixtures/php5.4/traits.php',
                 'Foo\\TBar' => __DIR__.'/Fixtures/php5.4/traits.php',
                 'Foo\\IBar' => __DIR__.'/Fixtures/php5.4/traits.php',
                 'Foo\\TFooBar' => __DIR__.'/Fixtures/php5.4/traits.php',
                 'Foo\\CBar' => __DIR__.'/Fixtures/php5.4/traits.php',
-            )),
-            array(__DIR__.'/Fixtures/php5.5', array(
+            ]],
+            [__DIR__.'/Fixtures/php5.5', [
                 'ClassCons\\Foo' => __DIR__.'/Fixtures/php5.5/class_cons.php',
-            )),
-        );
+            ]],
+        ];
 
         return $data;
     }
@@ -130,12 +130,12 @@ public function testCreateMapFinderSupport()
         $finder = new \Symfony\Component\Finder\Finder();
         $finder->files()->in(__DIR__.'/Fixtures/beta/NamespaceCollision');
 
-        $this->assertEqualsNormalized(array(
+        $this->assertEqualsNormalized([
             'NamespaceCollision\\A\\B\\Bar' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/A/B/Bar.php',
             'NamespaceCollision\\A\\B\\Foo' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/A/B/Foo.php',
             'NamespaceCollision\\C\\B\\Bar' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/C/B/Bar.php',
             'NamespaceCollision\\C\\B\\Foo' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/C/B/Foo.php',
-        ), ClassMapGenerator::createMap($finder));
+        ], ClassMapGenerator::createMap($finder));
     }
 
     protected function assertEqualsNormalized($expected, $actual, $message = '')
diff --git a/src/Symfony/Component/ClassLoader/Tests/Psr4ClassLoaderTest.php b/src/Symfony/Component/ClassLoader/Tests/Psr4ClassLoaderTest.php
index c34351b04b07..122200e9969b 100644
--- a/src/Symfony/Component/ClassLoader/Tests/Psr4ClassLoaderTest.php
+++ b/src/Symfony/Component/ClassLoader/Tests/Psr4ClassLoaderTest.php
@@ -39,12 +39,12 @@ public function testLoadClass($className)
      */
     public function getLoadClassTests()
     {
-        return array(
-            array('Acme\\DemoLib\\Foo'),
-            array('Acme\\DemoLib\\Class_With_Underscores'),
-            array('Acme\\DemoLib\\Lets\\Go\\Deeper\\Foo'),
-            array('Acme\\DemoLib\\Lets\\Go\\Deeper\\Class_With_Underscores'),
-        );
+        return [
+            ['Acme\\DemoLib\\Foo'],
+            ['Acme\\DemoLib\\Class_With_Underscores'],
+            ['Acme\\DemoLib\\Lets\\Go\\Deeper\\Foo'],
+            ['Acme\\DemoLib\\Lets\\Go\\Deeper\\Class_With_Underscores'],
+        ];
     }
 
     /**
@@ -67,9 +67,9 @@ public function testLoadNonexistentClass($className)
      */
     public function getLoadNonexistentClassTests()
     {
-        return array(
-            array('Acme\\DemoLib\\I_Do_Not_Exist'),
-            array('UnknownVendor\\SomeLib\\I_Do_Not_Exist'),
-        );
+        return [
+            ['Acme\\DemoLib\\I_Do_Not_Exist'],
+            ['UnknownVendor\\SomeLib\\I_Do_Not_Exist'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php b/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
index 75ebb84ce2fb..a7149ce9daf3 100644
--- a/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
@@ -87,7 +87,7 @@ public function __construct($prefix, $decorated)
      */
     public function register($prepend = false)
     {
-        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+        spl_autoload_register([$this, 'loadClass'], true, $prepend);
     }
 
     /**
@@ -95,7 +95,7 @@ public function register($prepend = false)
      */
     public function unregister()
     {
-        spl_autoload_unregister(array($this, 'loadClass'));
+        spl_autoload_unregister([$this, 'loadClass']);
     }
 
     /**
@@ -137,6 +137,6 @@ public function findFile($class)
      */
     public function __call($method, $args)
     {
-        return \call_user_func_ar
10000
ray(array($this->decorated, $method), $args);
+        return \call_user_func_array([$this->decorated, $method], $args);
     }
 }
diff --git a/src/Symfony/Component/ClassLoader/XcacheClassLoader.php b/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
index a6a9ecc16d54..56965df4c8ea 100644
--- a/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
@@ -81,7 +81,7 @@ public function __construct($prefix, $decorated)
      */
     public function register($prepend = false)
     {
-        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+        spl_autoload_register([$this, 'loadClass'], true, $prepend);
     }
 
     /**
@@ -89,7 +89,7 @@ public function register($prepend = false)
      */
     public function unregister()
     {
-        spl_autoload_unregister(array($this, 'loadClass'));
+        spl_autoload_unregister([$this, 'loadClass']);
     }
 
     /**
@@ -132,6 +132,6 @@ public function findFile($class)
      */
     public function __call($method, $args)
     {
-        return \call_user_func_array(array($this->decorated, $method), $args);
+        return \call_user_func_array([$this->decorated, $method], $args);
     }
 }
diff --git a/src/Symfony/Component/Config/ConfigCache.php b/src/Symfony/Component/Config/ConfigCache.php
index 591c89bc4ff0..b2a39076f9d4 100644
--- a/src/Symfony/Component/Config/ConfigCache.php
+++ b/src/Symfony/Component/Config/ConfigCache.php
@@ -35,9 +35,9 @@ public function __construct($file, $debug)
     {
         $this->debug = (bool) $debug;
 
-        $checkers = array();
+        $checkers = [];
         if (true === $this->debug) {
-            $checkers = array(new SelfCheckingResourceChecker());
+            $checkers = [new SelfCheckingResourceChecker()];
         }
 
         parent::__construct($file, $checkers);
diff --git a/src/Symfony/Component/Config/Definition/ArrayNode.php b/src/Symfony/Component/Config/Definition/ArrayNode.php
index 25d9cfc5e416..4e39ea769904 100644
--- a/src/Symfony/Component/Config/Definition/ArrayNode.php
+++ b/src/Symfony/Component/Config/Definition/ArrayNode.php
@@ -22,8 +22,8 @@
  */
 class ArrayNode extends BaseNode implements PrototypeNodeInterface
 {
-    protected $xmlRemappings = array();
-    protected $children = array();
+    protected $xmlRemappings = [];
+    protected $children = [];
     protected $allowFalse = false;
     protected $allowNewKeys = true;
     protected $addIfNotSet = false;
@@ -56,7 +56,7 @@ protected function preNormalize($value)
             return $value;
         }
 
-        $normalized = array();
+        $normalized = [];
 
         foreach ($value as $k => $v) {
             if (false !== strpos($k, '-') && false === strpos($k, '_') && !array_key_exists($normalizedKey = str_replace('-', '_', $k), $value)) {
@@ -177,7 +177,7 @@ public function getDefaultValue()
             throw new \RuntimeException(sprintf('The node at path "%s" has no default value.', $this->getPath()));
         }
 
-        $defaults = array();
+        $defaults = [];
         foreach ($this->children as $name => $child) {
             if ($child->hasDefaultValue()) {
                 $defaults[$name] = $child->getDefaultValue();
@@ -289,7 +289,7 @@ protected function normalizeValue($value)
 
         $value = $this->remapXml($value);
 
-        $normalized = array();
+        $normalized = [];
         foreach ($value as $name => $val) {
             if (isset($this->children[$name])) {
                 try {
diff --git a/src/Symfony/Component/Config/Definition/BaseNode.php b/src/Symfony/Component/Config/Definition/BaseNode.php
index d3f0f96e3360..905406d12c56 100644
--- a/src/Symfony/Component/Config/Definition/BaseNode.php
+++ b/src/Symfony/Component/Config/Definition/BaseNode.php
@@ -25,13 +25,13 @@ abstract class BaseNode implements NodeInterface
 {
     protected $name;
     protected $parent;
-    protected $normalizationClosures = array();
-    protected $finalValidationClosures = array();
+    protected $normalizationClosures = [];
+    protected $finalValidationClosures = [];
     protected $allowOverwrite = true;
     protected $required = false;
     protected $deprecationMessage = null;
-    protected $equivalentValues = array();
-    protected $attributes = array();
+    protected $equivalentValues = [];
+    protected $attributes = [];
 
     /**
      * @param string|null        $name   The name of the node
@@ -127,7 +127,7 @@ public function getExample()
      */
     public function addEquivalentValue($originalValue, $equivalentValue)
     {
-        $this->equivalentValues[] = array($originalValue, $equivalentValue);
+        $this->equivalentValues[] = [$originalValue, $equivalentValue];
     }
 
     /**
@@ -211,7 +211,7 @@ public function isDeprecated()
      */
     public function getDeprecationMessage($node, $path)
     {
-        return strtr($this->deprecationMessage, array('%node%' => $node, '%path%' => $path));
+        return strtr($this->deprecationMessage, ['%node%' => $node, '%path%' => $path]);
     }
 
     /**
diff --git a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
index 28a00be09110..55d695c7cb4d 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
@@ -25,7 +25,7 @@ class ArrayNodeDefinition extends NodeDefinition implements ParentNodeDefinition
     protected $performDeepMerging = true;
     protected $ignoreExtraKeys = false;
     protected $removeExtraKeys = true;
-    protected $children = array();
+    protected $children = [];
     protected $prototype;
     protected $atLeastOne = false;
     protected $allowNewKeys = true;
@@ -43,8 +43,8 @@ public function __construct($name, NodeParentInterface $parent = null)
     {
         parent::__construct($name, $parent);
 
-        $this->nullEquivalent = array();
-        $this->trueEquivalent = array();
+        $this->nullEquivalent = [];
+        $this->trueEquivalent = [];
     }
 
     /**
@@ -275,9 +275,9 @@ public function canBeEnabled()
     {
         $this
             ->addDefaultsIfNotSet()
-            ->treatFalseLike(array('enabled' => false))
-            ->treatTrueLike(array('enabled' => true))
-            ->treatNullLike(array('enabled' => true))
+            ->treatFalseLike(['enabled' => false])
+            ->treatTrueLike(['enabled' => true])
+            ->treatNullLike(['enabled' => true])
             ->beforeNormalization()
                 ->ifArray()
                 ->then(function ($v) {
@@ -305,9 +305,9 @@ public function canBeDisabled()
     {
         $this
             ->addDefaultsIfNotSet()
-            ->treatFalseLike(array('enabled' => false))
-            ->treatTrueLike(array('enabled' => true))
-            ->treatNullLike(array('enabled' => true))
+            ->treatFalseLike(['enabled' => false])
+            ->treatTrueLike(['enabled' => true])
+            ->treatNullLike(['enabled' => true])
             ->children()
                 ->booleanNode('enabled')
                     ->defaultTrue()
diff --git a/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php b/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
index 7ba19515b82d..05949d2b5a3b 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
@@ -144,7 +144,7 @@ public function ifNotInArray(array $array)
     public function castToArray()
     {
         $this->ifPart = function ($v) { return !\is_array($v); };
-        $this->thenPart = function ($v) { return array($v); };
+        $this->thenPart = function ($v) { return [$v]; };
 
         return $this;
     }
@@ -168,7 +168,7 @@ public function then(\Closure $closure)
      */
     public function thenEmptyArray()
     {
-        $this->thenPart = function ($v) { return array(); };
+        $this->thenPart = function ($v) { return []; };
 
         return $this;
     }
diff --git a/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php b/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php
index 95863d68f9bb..63c0d696b4fa 100644
--- a/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php
+++ b/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php
@@ -23,7 +23,7 @@ class NodeBuilder implements NodeParentInterface
 
     public function __construct()
     {
-        $this->nodeMapping = array(
+        $this->nodeMapping = [
             'variable' => __NAMESPACE__.'\\VariableNodeDefinition',
             'scalar' => __NAMESPACE__.'\\ScalarNodeDefinition',
             'boolean' => __NAMESPACE__.'\\BooleanNodeDefinition',
@@ -31,7 +31,7 @@ public function __construct()
             'float' => __NAMESPACE__.'\\FloatNodeDefinition',
             'array' => __NAMESPACE__.'\\ArrayNodeDefinition',
             'enum' => __NAMESPACE__.'\\EnumNodeDefinition',
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Config/Definition/Builder/NodeDefinition.php b/src/Symfony/Component/Config/Definition/Builder/NodeDefinition.php
index 3a4d2cdf07fd..cc245d7489b0 100644
--- a/src/Symfony/Component/Config/Definition/Builder/NodeDefinition.php
+++ b/src/Symfony/Component/Config/Definition/Builder/NodeDefinition.php
@@ -34,7 +34,7 @@ abstract class NodeDefinition implements NodeParentInterface
     protected $trueEquivalent = true;
     protected $falseEquivalent = false;
     protected $parent;
-    protected $attributes = array();
+    protected $attributes = [];
 
     /**
      * @param string|null              $name   The name of the node
diff --git a/src/Symfony/Component/Config/Definition/Builder/NormalizationBuilder.php b/src/Symfony/Component/Config/Definition/Builder/NormalizationBuilder.php
index 35e30487a60e..d3cdca90df1c 100644
--- a/src/Symfony/Component/Config/Definition/Builder/NormalizationBuilder.php
+++ b/src/Symfony/Component/Config/Definition/Builder/NormalizationBuilder.php
@@ -19,8 +19,8 @@
 class NormalizationBuilder
 {
     protected $node;
-    public $before = array();
-    public $remappings = array();
+    public $before = [];
+    public $remappings = [];
 
     public function __construct(NodeDefinition $node)
     {
@@ -37,7 +37,7 @@ public function __construct(NodeDefinition $node)
      */
     public function remap($key, $plural = null)
     {
-        $this->remappings[] = array($key, null === $plural ? $key.'s' : $plural);
+        $this->remappings[] = [$key, null === $plural ? $key.'s' : $plural];
 
         return $this;
     }
diff --git a/src/Symfony/Component/Config/Definition/Builder/ValidationBuilder.php b/src/Symfony/Component/Config/Definition/Builder/ValidationBuilder.php
index bb2b9eb33924..4efc726c0cf2 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ValidationBuilder.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ValidationBuilder.php
@@ -19,7 +19,7 @@
 class ValidationBuilder
 {
     protected $node;
-    public $rules = array();
+    public $rules = [];
 
     public function __construct(NodeDefinition $node)
     {
diff --git a/src/Symfony/Component/Config/Definition/Dumper/XmlReferenceDumper.php b/src/Symfony/Component/Config/Definition/Dumper/XmlReferenceDumper.php
index 881457c92344..da05530acfdd 100644
--- a/src/Symfony/Component/Config/Definition/Dumper/XmlReferenceDumper.php
+++ b/src/Symfony/Component/Config/Definition/Dumper/XmlReferenceDumper.php
@@ -65,10 +65,10 @@ private function writeNode(NodeInterface $node, $depth = 0, $root = false, $name
         }
         $rootName = str_replace('_', '-', $rootName);
 
-        $rootAttributes = array();
-        $rootAttributeComments = array();
-        $rootChildren = array();
-        $rootComments = array();
+        $rootAttributes = [];
+        $rootAttributeComments = [];
+        $rootChildren = [];
+        $rootComments = [];
 
         if ($node instanceof ArrayNode) {
             $children = $node->getChildren();
@@ -98,7 +98,7 @@ private function writeNode(NodeInterface $node, $depth = 0, $root = false, $name
 
                 if ($prototype instanceof PrototypedArrayNode) {
                     $prototype->setName($key);
-                    $children = array($key => $prototype);
+                    $children = [$key => $prototype];
                 } elseif ($prototype instanceof ArrayNode) {
                     $children = $prototype->getChildren();
                 } else {
@@ -140,7 +140,7 @@ private function writeNode(NodeInterface $node, $depth = 0, $root = false, $name
                     $value = '%%%%not_defined%%%%'; // use a string which isn't used in the normal world
 
                     // comments
-                    $comments = array();
+                    $comments = [];
                     if ($info = $child->getInfo()) {
                         $comments[] = $info;
                     }
diff --git a/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php b/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php
index fc5d20a2e704..7aa97909f3e2 100644
--- a/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php
+++ b/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php
@@ -77,7 +77,7 @@ public function dumpNode(NodeInterface $node)
      */
     private function writeNode(NodeInterface $node, NodeInterface $parentNode = null, $depth = 0, $prototypedArray = false)
     {
-        $comments = array();
+        $comments = [];
         $default = '';
         $defaultArray = null;
         $children = null;
@@ -251,6 +251,6 @@ private function getPrototypeChildren(PrototypedArrayNode $node)
         }
         $keyNode->setInfo($info);
 
-        return array($key => $keyNode);
+        return [$key => $keyNode];
     }
 }
diff --git a/src/Symfony/Component/Config/Definition/EnumNode.php b/src/Symfony/Component/Config/Definition/EnumNode.php
index a214a854b758..15c8db3e66e5 100644
--- a/src/Symfony/Component/Config/Definition/EnumNode.php
+++ b/src/Symfony/Component/Config/Definition/EnumNode.php
@@ -22,7 +22,7 @@ class EnumNode extends ScalarNode
 {
     private $values;
 
-    public function __construct($name, NodeInterface $parent = null, array $values = array())
+    public function __construct($name, NodeInterface $parent = null, array $values = [])
     {
         $values = array_unique($values);
         if (empty($values)) {
diff --git a/src/Symfony/Component/Config/Definition/Processor.php b/src/Symfony/Component/Config/Definition/Processor.php
index 3e0feab8693e..0a935eeb7ff1 100644
--- a/src/Symfony/Component/Config/Definition/Processor.php
+++ b/src/Symfony/Component/Config/Definition/Processor.php
@@ -28,7 +28,7 @@ class Processor
      */
     public function process(NodeInterface $configTree, array $configs)
     {
-        $currentConfig = array();
+        $currentConfig = [];
         foreach ($configs as $config) {
             $config = $configTree->normalize($config);
             $currentConfig = $configTree->merge($currentConfig, $config);
@@ -86,12 +86,12 @@ public static function normalizeConfig($config, $key, $plural = null)
         if (isset($config[$key])) {
             if (\is_string($config[$key]) || !\is_int(key($config[$key]))) {
                 // only one
-                return  array($config[$key]);
+                return  [$config[$key]];
             }
 
             return  $config[$key];
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php b/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
index eddcb32a7787..15769a34f128 100644
--- a/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
+++ b/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
@@ -27,12 +27,12 @@ class PrototypedArrayNode extends ArrayNode
     protected $keyAttribute;
     protected $removeKeyAttribute = false;
     protected $minNumberOfElements = 0;
-    protected $defaultValue = array();
+    protected $defaultValue = [];
     protected $defaultChildren;
     /**
      * @var NodeInterface[] An array of the prototypes of the simplified value children
      */
-    private $valuePrototypes = array();
+    private $valuePrototypes = [];
 
     /**
      * Sets the minimum number of elements that a prototype based node must
@@ -114,10 +114,10 @@ public function hasDefaultValue()
      *
      * @param int|string|array|null $children The number of children|The child name|The children names to be added
      */
-    public function setAddChildrenIfNoneSet($children = array('defaults'))
+    public function setAddChildrenIfNoneSet($children = ['defaults'])
     {
         if (null === $children) {
-            $this->defaultChildren = array('defaults');
+            $this->defaultChildren = ['defaults'];
         } else {
             $this->defaultChildren = \is_int($children) && $children > 0 ? range(1, $children) : (array) $children;
         }
@@ -132,8 +132,8 @@ public function setAddChildrenIfNoneSet($children = array('defaults'))
     public function getDefaultValue()
     {
         if (null !== $this->defaultChildren) {
-            $default = $this->prototype->hasDefaultValue() ? $this->prototype->getDefaultValue() : array();
-            $defaults = array();
+            $default = $this->prototype->hasDefaultValue() ? $this->prototype->getDefaultValue() : [];
+            $defaults = [];
             foreach (array_values($this->defaultChildren) as $i => $name) {
                 $defaults[null === $this->keyAttribute ? $i : $name] = $default;
             }
@@ -226,7 +226,7 @@ protected function normalizeValue($value)
         $value = $this->remapXml($value);
 
         $isAssoc = array_keys($value) !== range(0, \count($value) - 1);
-        $normalized = array();
+        $normalized = [];
         foreach ($value as $k => $v) {
             if (null !== $this->keyAttribute && \is_array($v)) {
                 if (!isset($v[$this->keyAttribute]) && \is_int($k) && !$isAssoc) {
@@ -243,7 +243,7 @@ protected function normalizeValue($value)
                     }
 
                     // if only "value" is left
-                    if (array_keys($v) === array('value')) {
+                    if (array_keys($v) === ['value']) {
                         $v = $v['value'];
                         if ($this->prototype instanceof ArrayNode && ($children = $this->prototype->getChildren()) && array_key_exists('value', $children)) {
                             $valuePrototype = current($this->valuePrototypes) ?: clone $children['value'];
diff --git a/src/Symfony/Component/Config/Exception/FileLoaderLoadException.php b/src/Symfony/Component/Config/Exception/FileLoaderLoadException.php
index e74bd673d547..82d90eb39b6e 100644
--- a/src/Symfony/Component/Config/Exception/FileLoaderLoadException.php
+++ b/src/Symfony/Component/Config/Exception/FileLoaderLoadException.php
@@ -80,7 +80,7 @@ protected function varToString($var)
         }
 
         if (\is_array($var)) {
-            $a = array();
+            $a = [];
             foreach ($var as $k => $v) {
                 $a[] = sprintf('%s => %s', $k, $this->varToString($v));
             }
diff --git a/src/Symfony/Component/Config/Exception/FileLocatorFileNotFoundException.php b/src/Symfony/Component/Config/Exception/FileLocatorFileNotFoundException.php
index af764eb4718d..648cf0e70769 100644
--- a/src/Symfony/Component/Config/Exception/FileLocatorFileNotFoundException.php
+++ b/src/Symfony/Component/Config/Exception/FileLocatorFileNotFoundException.php
@@ -20,7 +20,7 @@ class FileLocatorFileNotFoundException extends \InvalidArgumentException
 {
     private $paths;
 
-    public function __construct($message = '', $code = 0, $previous = null, array $paths = array())
+    public function __construct($message = '', $code = 0, $previous = null, array $paths = [])
     {
         parent::__construct($message, $code, $previous);
 
diff --git a/src/Symfony/Component/Config/FileLocator.php b/src/Symfony/Component/Config/FileLocator.php
index 2c9cea047c2a..1314cc3486e8 100644
--- a/src/Symfony/Component/Config/FileLocator.php
+++ b/src/Symfony/Component/Config/FileLocator.php
@@ -25,7 +25,7 @@ class FileLocator implements FileLocatorInterface
     /**
      * @param string|array $paths A path or an array of paths where to look for resources
      */
-    public function __construct($paths = array())
+    public function __construct($paths = [])
     {
         $this->paths = (array) $paths;
     }
@@ -41,7 +41,7 @@ public function locate($name, $currentPath = null, $first = true)
 
         if ($this->isAbsolutePath($name)) {
             if (!file_exists($name)) {
-                throw new FileLocatorFileNotFoundException(sprintf('The file "%s" does not exist.', $name), 0, null, array($name));
+                throw new FileLocatorFileNotFoundException(sprintf('The file "%s" does not exist.', $name), 0, null, [$name]);
             }
 
             return $name;
@@ -54,7 +54,7 @@ public function locate($name, $currentPath = null, $first = true)
         }
 
         $paths = array_unique($paths);
-        $filepaths = $notfound = array();
+        $filepaths = $notfound = [];
 
         foreach ($paths as $path) {
             if (@file_exists($file = $path.\DIRECTORY_SEPARATOR.$name)) {
diff --git a/src/Symfony/Component/Config/Loader/FileLoader.php b/src/Symfony/Component/Config/Loader/FileLoader.php
index 016ac4120fc9..abaf1767d90a 100644
--- a/src/Symfony/Component/Config/Loader/FileLoader.php
+++ b/src/Symfony/Component/Config/Loader/FileLoader.php
@@ -25,7 +25,7 @@
  */
 abstract class FileLoader extends Loader
 {
-    protected static $loading = array();
+    protected static $loading = [];
 
     protected $locator;
 
@@ -73,7 +73,7 @@ public function getLocator()
     public function import($resource, $type = null, $ignoreErrors = false, $sourceResource = null)
     {
         if (\is_string($resource) && \strlen($resource) !== $i = strcspn($resource, '*?{[')) {
-            $ret = array();
+            $ret = [];
             $isSubpath = 0 !== $i && false !== strpos(substr($resource, 0, $i), '/');
             foreach ($this->glob($resource, false, $_, $ignoreErrors || !$isSubpath) as $path => $info) {
                 if (null !== $res = $this->doImport($path, $type, $ignoreErrors, $sourceResource)) {
@@ -113,7 +113,7 @@ protected function glob($pattern, $recursive, &$resource = null, $ignoreErrors =
                 throw $e;
             }
 
-            $resource = array();
+            $resource = [];
             foreach ($e->getPaths() as $path) {
                 $resource[] = new FileExistenceResource($path);
             }
@@ -136,7 +136,7 @@ private function doImport($resource, $type = null, $ignoreErrors = false, $sourc
                 $resource = $loader->getLocator()->locate($resource, $this->currentDir, false);
             }
 
-            $resources = \is_array($resource) ? $resource : array($resource);
+            $resources = \is_array($resource) ? $resource : [$resource];
             for ($i = 0; $i < $resourcesCount = \count($resources); ++$i) {
                 if (isset(self::$loading[$resources[$i]])) {
                     if ($i == $resourcesCount - 1) {
diff --git a/src/Symfony/Component/Config/Loader/LoaderResolver.php b/src/Symfony/Component/Config/Loader/LoaderResolver.php
index 9299bc000f5f..c99efda4fd36 100644
--- a/src/Symfony/Component/Config/Loader/LoaderResolver.php
+++ b/src/Symfony/Component/Config/Loader/LoaderResolver.php
@@ -24,12 +24,12 @@ class LoaderResolver implements LoaderResolverInterface
     /**
      * @var LoaderInterface[] An array of LoaderInterface objects
      */
-    private $loaders = array();
+    private $loaders = [];
 
     /**
      * @param LoaderInterface[] $loaders An array of loaders
      */
-    public function __construct(array $loaders = array())
+    public function __construct(array $loaders = [])
     {
         foreach ($loaders as $loader) {
             $this->addLoader($loader);
diff --git a/src/Symfony/Component/Config/Resource/ClassExistenceResource.php b/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
index 9a1d7ba57b2c..9f904a881e07 100644
--- a/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
+++ b/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
@@ -26,7 +26,7 @@ class ClassExistenceResource implements SelfCheckingResourceInterface, \Serializ
 
     private static $autoloadLevel = 0;
     private static $autoloadedClass;
-    private static $existsCache = array();
+    private static $existsCache = [];
 
     /**
      * @param string    $resource The fully-qualified class name
@@ -105,7 +105,7 @@ public function serialize()
             $this->isFresh(0);
         }
 
-        return serialize(array($this->resource, $this->exists));
+        return serialize([$this->resource, $this->exists]);
     }
 
     /**
@@ -126,10 +126,10 @@ private static function throwOnRequiredClass($class)
         }
         $e = new \ReflectionException("Class $class not found");
         $trace = $e->getTrace();
-        $autoloadFrame = array(
+        $autoloadFrame = [
             'function' => 'spl_autoload_call',
-            'args' => array($class),
-        );
+            'args' => [$class],
+        ];
         $i = 1 + array_search($autoloadFrame, $trace, true);
 
         if (isset($trace[$i]['function']) && !isset($trace[$i]['class'])) {
@@ -151,11 +151,11 @@ private static function throwOnRequiredClass($class)
                     return;
             }
 
-            $props = array(
+            $props = [
                 'file' => $trace[$i]['file'],
                 'line' => $trace[$i]['line'],
                 'trace' => \array_slice($trace, 1 + $i),
-            );
+            ];
 
             foreach ($props as $p => $v) {
                 $r = new \ReflectionProperty('Exception', $p);
diff --git a/src/Symfony/Component/Config/Resource/ComposerResource.php b/src/Symfony/Component/Config/Resource/ComposerResource.php
index 9c170c077509..85ac555295c8 100644
--- a/src/Symfony/Component/Config/Resource/ComposerResource.php
+++ b/src/Symfony/Component/Config/Resource/ComposerResource.php
@@ -63,7 +63,7 @@ public function unserialize($serialized)
 
     private static function refresh()
     {
-        self::$runtimeVendors = array();
+        self::$runtimeVendors = [];
 
         foreach (get_declared_classes() as $class) {
             if ('C' === $class[0] && 0 === strpos($class, 'ComposerAutoloaderInit')) {
diff --git a/src/Symfony/Component/Config/Resource/DirectoryResource.php b/src/Symfony/Component/Config/Resource/DirectoryResource.php
index b1786397d186..7b314dd9b01f 100644
--- a/src/Symfony/Component/Config/Resource/DirectoryResource.php
+++ b/src/Symfony/Component/Config/Resource/DirectoryResource.php
@@ -42,7 +42,7 @@ public function __construct($resource, $pattern = null)
      */
     public function __toString()
     {
-        return md5(serialize(array($this->resource, $this->pattern)));
+        return md5(serialize([$this->resource, $this->pattern]));
     }
 
     /**
@@ -106,7 +106,7 @@ public function isFresh($timestamp)
 
     public function serialize()
     {
-        return serialize(array($this->resource, $this->pattern));
+        return serialize([$this->resource, $this->pattern]);
     }
 
     public function unserialize($serialized)
diff --git a/src/Symfony/Component/Config/Resource/FileExistenceResource.php b/src/Symfony/Component/Config/Resource/FileExistenceResource.php
index 6396ddd52485..cbdf1b0c5ae0 100644
--- a/src/Symfony/Component/Config/Resource/FileExistenceResource.php
+++ b/src/Symfony/Component/Config/Resource/FileExistenceResource.php
@@ -63,7 +63,7 @@ public function isFresh($timestamp)
      */
     public function serialize()
     {
-        return serialize(array($this->resource, $this->exists));
+        return serialize([$this->resource, $this->exists]);
     }
 
     /**
diff --git a/src/Symfony/Component/Config/Resource/GlobResource.php b/src/Symfony/Component/Config/Resource/GlobResource.php
index e3c3be12cffe..20648b585e50 100644
--- a/src/Symfony/Component/Config/Resource/GlobResource.php
+++ b/src/Symfony/Component/Config/Resource/GlobResource.php
@@ -79,7 +79,7 @@ public function serialize()
             $this->hash = $this->computeHash();
         }
 
-        return serialize(array($this->prefix, $this->pattern, $this->recursive, $this->hash));
+        return serialize([$this->prefix, $this->pattern, $this->recursive, $this->hash]);
     }
 
     public function unserialize($serialized)
diff --git a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
index 65156a06de77..52f1ec53cd7d 100644
--- a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
+++ b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
@@ -19,13 +19,13 @@
  */
 class ReflectionClassResource implements SelfCheckingResourceInterface, \Serializable
 {
-    private $files = array();
+    private $files = [];
     private $className;
     private $classReflector;
-    private $excludedVendors = array();
+    private $excludedVendors = [];
     private $hash;
 
-    public function __construct(\ReflectionClass $classReflector, $excludedVendors = array())
+    public function __construct(\ReflectionClass $classReflector, $excludedVendors = [])
     {
         $this->className = $classReflector->name;
         $this->classReflector = $classReflector;
@@ -64,7 +64,7 @@ public function serialize()
             $this->loadFiles($this->classReflector);
         }
 
-        return serialize(array($this->files, $this->className, $this->hash));
+        return serialize([$this->files, $this->className, $this->hash]);
     }
 
     public function unserialize($serialized)
@@ -147,7 +147,7 @@ private function generateSignature(\ReflectionClass $class)
             foreach ($class->getMethods(\ReflectionMethod::IS_PUBLIC | \ReflectionMethod::IS_PROTECTED) as $m) {
                 yield preg_replace('/^  @@.*/m', '', $m);
 
-                $defaults = array();
+                $defaults = [];
                 foreach ($m->getParameters() as $p) {
                     $defaults[$p->name] = $p->isDefaultValueAvailable() ? $p->getDefaultValue() : null;
                 }
@@ -161,12 +161,12 @@ private function generateSignature(\ReflectionClass $class)
 
         if (interface_exists(EventSubscriberInterface::class, false) && $class->isSubclassOf(EventSubscriberInterface::class)) {
             yield EventSubscriberInterface::class;
-            yield print_r(\call_user_func(array($class->name, 'getSubscribedEvents')), true);
+            yield print_r(\call_user_func([$class->name, 'getSubscribedEvents']), true);
         }
 
         if (interface_exists(ServiceSubscriberInterface::class, false) && $class->isSubclassOf(ServiceSubscriberInterface::class)) {
             yield ServiceSubscriberInterface::class;
-            yield print_r(\call_user_func(array($class->name, 'getSubscribedServices')), true);
+            yield print_r(\call_user_func([$class->name, 'getSubscribedServices']), true);
         }
     }
 }
@@ -178,10 +178,10 @@ class ReflectionMethodHhvmWrapper extends \ReflectionMethod
 {
     public function getParameters()
     {
-        $params = array();
+        $params = [];
 
         foreach (parent::getParameters() as $i => $p) {
-            $params[] = new ReflectionParameterHhvmWrapper(array($this->class, $this->name), $i);
+            $params[] = new ReflectionParameterHhvmWrapper([$this->class, $this->name], $i);
         }
 
         return $params;
@@ -195,6 +195,6 @@ class ReflectionParameterHhvmWrapper extends \ReflectionParameter
 {
     public function getDefaultValue()
     {
-        return array($this->isVariadic(), $this->isDefaultValueAvailable() ? parent::getDefaultValue() : null);
+        return [$this->isVariadic(), $this->isDefaultValueAvailable() ? parent::getDefaultValue() : null];
     }
 }
diff --git a/src/Symfony/Component/Config/ResourceCheckerConfigCache.php b/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
index 91feed622832..933cf0f9c7b8 100644
--- a/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
+++ b/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
@@ -37,7 +37,7 @@ class ResourceCheckerConfigCache implements ConfigCacheInterface
      * @param string                              $file             The absolute cache path
      * @param iterable|ResourceCheckerInterface[] $resourceCheckers The ResourceCheckers to use for the freshness check
      */
-    public function __construct($file, $resourceCheckers = array())
+    public function __construct($file, $resourceCheckers = [])
     {
         $this->file = $file;
         $this->resourceCheckers = $resourceCheckers;
@@ -158,7 +158,7 @@ private function safelyUnserialize($file)
         $meta = false;
         $signalingException = new \UnexpectedValueException();
         $prevUnserializeHandler = ini_set('unserialize_callback_func', '');
-        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) use (&$prevErrorHandler, $signalingException) {
+        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$prevErrorHandler, $signalingException) {
             if (E_WARNING === $type && 'Class __PHP_Incomplete_Class has no unserializer' === $msg) {
                 throw $signalingException;
             }
diff --git a/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php b/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php
index 2e27eab711dc..c00fa7db1b03 100644
--- a/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php
+++ b/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php
@@ -19,12 +19,12 @@
  */
 class ResourceCheckerConfigCacheFactory implements ConfigCacheFactoryInterface
 {
-    private $resourceCheckers = array();
+    private $resourceCheckers = [];
 
     /**
      * @param iterable|ResourceCheckerInterface[] $resourceCheckers
      */
-    public function __construct($resourceCheckers = array())
+    public function __construct($resourceCheckers = [])
     {
         $this->resourceCheckers = $resourceCheckers;
     }
diff --git a/src/Symfony/Component/Config/Tests/ConfigCacheTest.php b/src/Symfony/Component/Config/Tests/ConfigCacheTest.php
index bf8131d514bd..d0b70899b513 100644
--- a/src/Symfony/Component/Config/Tests/ConfigCacheTest.php
+++ b/src/Symfony/Component/Config/Tests/ConfigCacheTest.php
@@ -26,7 +26,7 @@ protected function setUp()
 
     protected function tearDown()
     {
-        $files = array($this->cacheFile, $this->cacheFile.'.meta');
+        $files = [$this->cacheFile, $this->cacheFile.'.meta'];
 
         foreach ($files as $file) {
             if (file_exists($file)) {
@@ -52,7 +52,7 @@ public function testIsAlwaysFreshInProduction()
         $staleResource->setFresh(false);
 
         $cache = new ConfigCache($this->cacheFile, false);
-        $cache->write('', array($staleResource));
+        $cache->write('', [$staleResource]);
 
         $this->assertTrue($cache->isFresh());
     }
@@ -63,7 +63,7 @@ public function testIsAlwaysFreshInProduction()
     public function testIsFreshWhenNoResourceProvided($debug)
     {
         $cache = new ConfigCache($this->cacheFile, $debug);
-        $cache->write('', array());
+        $cache->write('', []);
         $this->assertTrue($cache->isFresh());
     }
 
@@ -73,7 +73,7 @@ public function testFreshResourceInDebug()
         $freshResource->setFresh(true);
 
         $cache = new ConfigCache($this->cacheFile, true);
-        $cache->write('', array($freshResource));
+        $cache->write('', [$freshResource]);
 
         $this->assertTrue($cache->isFresh());
     }
@@ -84,16 +84,16 @@ public function testStaleResourceInDebug()
         $staleResource->setFresh(false);
 
         $cache = new ConfigCache($this->cacheFile, true);
-        $cache->write('', array($staleResource));
+        $cache->write('', [$staleResource]);
 
         $this->assertFalse($cache->isFresh());
     }
 
     public function debugModes()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/ArrayNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/ArrayNodeTest.php
index 089cb56638d3..8f84cff38828 100644
--- a/src/Symfony/Component/Config/Tests/Definition/ArrayNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/ArrayNodeTest.php
@@ -34,19 +34,19 @@ public function testNormalizeThrowsExceptionWhenFalseIsNotAllowed()
     public function testExceptionThrownOnUnrecognizedChild()
     {
         $node = new ArrayNode('root');
-        $node->normalize(array('foo' => 'bar'));
+        $node->normalize(['foo' => 'bar']);
     }
 
     public function ignoreAndRemoveMatrixProvider()
     {
         $unrecognizedOptionException = new InvalidConfigurationException('Unrecognized option "foo" under "root"');
 
-        return array(
-            array(true, true, array(), 'no exception is thrown for an unrecognized child if the ignoreExtraKeys option is set to true'),
-            array(true, false, array('foo' => 'bar'), 'extra keys are not removed when ignoreExtraKeys second option is set to false'),
-            array(false, true, $unrecognizedOptionException),
-            array(false, false, $unrecognizedOptionException),
-        );
+        return [
+            [true, true, [], 'no exception is thrown for an unrecognized child if the ignoreExtraKeys option is set to true'],
+            [true, false, ['foo' => 'bar'], 'extra keys are not removed when ignoreExtraKeys second option is set to false'],
+            [false, true, $unrecognizedOptionException],
+            [false, false, $unrecognizedOptionException],
+        ];
     }
 
     /**
@@ -64,7 +64,7 @@ public function testIgnoreAndRemoveBehaviors($ignore, $remove, $expected, $messa
         }
         $node = new ArrayNode('root');
         $node->setIgnoreExtraKeys($ignore, $remove);
-        $result = $node->normalize(array('foo' => 'bar'));
+        $result = $node->normalize(['foo' => 'bar']);
         $this->assertSame($expected, $result, $message);
     }
 
@@ -83,24 +83,24 @@ public function testPreNormalize($denormalized, $normalized)
 
     public function getPreNormalizationTests()
     {
-        return array(
-            array(
-                array('foo-bar' => 'foo'),
-                array('foo_bar' => 'foo'),
-            ),
-            array(
-                array('foo-bar_moo' => 'foo'),
-                array('foo-bar_moo' => 'foo'),
-            ),
-            array(
-                array('anything-with-dash-and-no-underscore' => 'first', 'no_dash' => 'second'),
-                array('anything_with_dash_and_no_underscore' => 'first', 'no_dash' => 'second'),
-            ),
-            array(
-                array('foo-bar' => null, 'foo_bar' => 'foo'),
-                array('foo-bar' => null, 'foo_bar' => 'foo'),
-            ),
-        );
+        return [
+            [
+                ['foo-bar' => 'foo'],
+                ['foo_bar' => 'foo'],
+            ],
+            [
+                ['foo-bar_moo' => 'foo'],
+                ['foo-bar_moo' => 'foo'],
+            ],
+            [
+                ['anything-with-dash-and-no-underscore' => 'first', 'no_dash' => 'second'],
+                ['anything_with_dash_and_no_underscore' => 'first', 'no_dash' => 'second'],
+            ],
+            [
+                ['foo-bar' => null, 'foo_bar' => 'foo'],
+                ['foo-bar' => null, 'foo_bar' => 'foo'],
+            ],
+        ];
     }
 
     /**
@@ -125,30 +125,30 @@ public function testNodeNameCanBeZero($denormalized, $normalized)
 
     public function getZeroNamedNodeExamplesData()
     {
-        return array(
-            array(
-                array(
-                    0 => array(
+        return [
+            [
+                [
+                    0 => [
                         'name' => 'something',
-                    ),
-                    5 => array(
+                    ],
+                    5 => [
                         0 => 'this won\'t work too',
                         'new_key' => 'some other value',
-                    ),
+                    ],
                     'string_key' => 'just value',
-                ),
-                array(
-                    0 => array(
+                ],
+                [
+                    0 => [
                         'name' => 'something',
-                    ),
-                    5 => array(
+                    ],
+                    5 => [
                         0 => 'this won\'t work too',
                         'new_key' => 'some other value',
-                    ),
+                    ],
                     'string_key' => 'just value',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
     }
 
     /**
@@ -172,12 +172,12 @@ public function testChildrenOrderIsMaintainedOnNormalizeValue($prenormalized, $n
 
     public function getPreNormalizedNormalizedOrderedData()
     {
-        return array(
-            array(
-                array('2' => 'two', '1' => 'one', '3' => 'three'),
-                array('2' => 'two', '1' => 'one', '3' => 'three'),
-            ),
-        );
+        return [
+            [
+                ['2' => 'two', '1' => 'one', '3' => 'three'],
+                ['2' => 'two', '1' => 'one', '3' => 'three'],
+            ],
+        ];
     }
 
     /**
@@ -238,13 +238,13 @@ public function testSetDeprecated()
         };
 
         $prevErrorHandler = set_error_handler($deprecationHandler);
-        $node->finalize(array());
+        $node->finalize([]);
         restore_error_handler();
 
         $this->assertFalse($deprecationTriggered, '->finalize() should not trigger if the deprecated node is not set');
 
         $prevErrorHandler = set_error_handler($deprecationHandler);
-        $node->finalize(array('foo' => array()));
+        $node->finalize(['foo' => []]);
         restore_error_handler();
         $this->assertTrue($deprecationTriggered, '->finalize() should trigger if the deprecated node is set');
     }
diff --git a/src/Symfony/Component/Config/Tests/Definition/BooleanNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/BooleanNodeTest.php
index ab1d3164145d..bfa2fd3e287e 100644
--- a/src/Symfony/Component/Config/Tests/Definition/BooleanNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/BooleanNodeTest.php
@@ -40,10 +40,10 @@ public function testValidNonEmptyValues($value)
 
     public function getValidValues()
     {
-        return array(
-            array(false),
-            array(true),
-        );
+        return [
+            [false],
+            [true],
+        ];
     }
 
     /**
@@ -58,17 +58,17 @@ public function testNormalizeThrowsExceptionOnInvalidValues($value)
 
     public function getInvalidValues()
     {
-        return array(
-            array(null),
-            array(''),
-            array('foo'),
-            array(0),
-            array(1),
-            array(0.0),
-            array(0.1),
-            array(array()),
-            array(array('foo' => 'bar')),
-            array(new \stdClass()),
-        );
+        return [
+            [null],
+            [''],
+            ['foo'],
+            [0],
+            [1],
+            [0.0],
+            [0.1],
+            [[]],
+            [['foo' => 'bar']],
+            [new \stdClass()],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
index ae3fd0678889..4ad7eabf3166 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
@@ -43,19 +43,19 @@ public function testPrototypeNodeSpecificOption($method, $args)
     {
         $node = new ArrayNodeDefinition('root');
 
-        \call_user_func_array(array($node, $method), $args);
+        \call_user_func_array([$node, $method], $args);
 
         $node->getNode();
     }
 
     public function providePrototypeNodeSpecificCalls()
     {
-        return array(
-            array('defaultValue', array(array())),
-            array('addDefaultChildrenIfNoneSet', array()),
-            array('requiresAtLeastOneElement', array()),
-            array('useAttributeAsKey', array('foo')),
-        );
+        return [
+            ['defaultValue', [[]]],
+            ['addDefaultChildrenIfNoneSet', []],
+            ['requiresAtLeastOneElement', []],
+            ['useAttributeAsKey', ['foo']],
+        ];
     }
 
     /**
@@ -78,7 +78,7 @@ public function testPrototypeNodesCantHaveADefaultValueWhenUsingDefaultChildren(
     {
         $node = new ArrayNodeDefinition('root');
         $node
-            ->defaultValue(array())
+            ->defaultValue([])
             ->addDefaultChildrenIfNoneSet('foo')
             ->prototype('array')
         ;
@@ -93,7 +93,7 @@ public function testPrototypedArrayNodeDefaultWhenUsingDefaultChildren()
             ->prototype('array')
         ;
         $tree = $node->getNode();
-        $this->assertEquals(array(array()), $tree->getDefaultValue());
+        $this->assertEquals([[]], $tree->getDefaultValue());
     }
 
     /**
@@ -133,14 +133,14 @@ public function testPrototypedArrayNodeDefault($args, $shouldThrowWhenUsingAttrA
 
     public function providePrototypedArrayNodeDefaults()
     {
-        return array(
-            array(null, true, false, array(array())),
-            array(2, true, false, array(array(), array())),
-            array('2', false, true, array('2' => array())),
-            array('foo', false, true, array('foo' => array())),
-            array(array('foo'), false, true, array('foo' => array())),
-            array(array('foo', 'bar'), false, true, array('foo' => array(), 'bar' => array())),
-        );
+        return [
+            [null, true, false, [[]]],
+            [2, true, false, [[], []]],
+            ['2', false, true, ['2' => []]],
+            ['foo', false, true, ['foo' => []]],
+            [['foo'], false, true, ['foo' => []]],
+            [['foo', 'bar'], false, true, ['foo' => [], 'bar' => []]],
+        ];
     }
 
     public function testNestedPrototypedArrayNodes()
@@ -166,7 +166,7 @@ public function testEnabledNodeDefaults()
                 ->scalarNode('foo')->defaultValue('bar')->end()
         ;
 
-        $this->assertEquals(array('enabled' => false, 'foo' => 'bar'), $node->getNode()->getDefaultValue());
+        $this->assertEquals(['enabled' => false, 'foo' => 'bar'], $node->getNode()->getDefaultValue());
     }
 
     /**
@@ -195,9 +195,9 @@ public function testCanBeDisabled()
         $node->canBeDisabled();
 
         $this->assertTrue($this->getField($node, 'addDefaults'));
-        $this->assertEquals(array('enabled' => false), $this->getField($node, 'falseEquivalent'));
-        $this->assertEquals(array('enabled' => true), $this->getField($node, 'trueEquivalent'));
-        $this->assertEquals(array('enabled' => true), $this->getField($node, 'nullEquivalent'));
+        $this->assertEquals(['enabled' => false], $this->getField($node, 'falseEquivalent'));
+        $this->assertEquals(['enabled' => true], $this->getField($node, 'trueEquivalent'));
+        $this->assertEquals(['enabled' => true], $this->getField($node, 'nullEquivalent'));
 
         $nodeChildren = $this->getField($node, 'children');
         $this->assertArrayHasKey('enabled', $nodeChildren);
@@ -247,7 +247,7 @@ public function testUnsetChild()
             ->end()
         ;
 
-        $this->assertSame(array(), $node->getNode()->normalize(array('value' => null)));
+        $this->assertSame([], $node->getNode()->normalize(['value' => null]));
     }
 
     public function testPrototypeVariable()
@@ -294,14 +294,14 @@ public function testPrototypeEnum()
 
     public function getEnableableNodeFixtures()
     {
-        return array(
-            array(array('enabled' => true, 'foo' => 'bar'), array(true), 'true enables an enableable node'),
-            array(array('enabled' => true, 'foo' => 'bar'), array(null), 'null enables an enableable node'),
-            array(array('enabled' => true, 'foo' => 'bar'), array(array('enabled' => true)), 'An enableable node can be enabled'),
-            array(array('enabled' => true, 'foo' => 'baz'), array(array('foo' => 'baz')), 'any configuration enables an enableable node'),
-            array(array('enabled' => false, 'foo' => 'baz'), array(array('foo' => 'baz', 'enabled' => false)), 'An enableable node can be disabled'),
-            array(array('enabled' => false, 'foo' => 'bar'), array(false), 'false disables an enableable node'),
-        );
+        return [
+            [['enabled' => true, 'foo' => 'bar'], [true], 'true enables an enableable node'],
+            [['enabled' => true, 'foo' => 'bar'], [null], 'null enables an enableable node'],
+            [['enabled' => true, 'foo' => 'bar'], [['enabled' => true]], 'An enableable node can be enabled'],
+            [['enabled' => true, 'foo' => 'baz'], [['foo' => 'baz']], 'any configuration enables an enableable node'],
+            [['enabled' => false, 'foo' => 'baz'], [['foo' => 'baz', 'enabled' => false]], 'An enableable node can be disabled'],
+            [['enabled' => false, 'foo' => 'bar'], [false], 'false disables an enableable node'],
+        ];
     }
 
     public function testRequiresAtLeastOneElement()
@@ -311,7 +311,7 @@ public function testRequiresAtLeastOneElement()
             ->requiresAtLeastOneElement()
             ->integerPrototype();
 
-        $node->getNode()->finalize(array(1));
+        $node->getNode()->finalize([1]);
 
         $this->addToAssertionCount(1);
     }
@@ -327,7 +327,7 @@ public function testCannotBeEmpty()
             ->cannotBeEmpty()
             ->integerPrototype();
 
-        $node->getNode()->finalize(array());
+        $node->getNode()->finalize([]);
     }
 
     public function testSetDeprecated()
@@ -353,7 +353,7 @@ public function testCannotBeEmptyOnConcreteNode()
         $node = new ArrayNodeDefinition('root');
         $node->cannotBeEmpty();
 
-        $node->getNode()->finalize(array());
+        $node->getNode()->finalize([]);
     }
 
     protected function getField($object, $field)
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/EnumNodeDefinitionTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/EnumNodeDefinitionTest.php
index 9c0aa0e11cf9..26f8586dcb57 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/EnumNodeDefinitionTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/EnumNodeDefinitionTest.php
@@ -19,19 +19,19 @@ class EnumNodeDefinitionTest extends TestCase
     public function testWithOneValue()
     {
         $def = new EnumNodeDefinition('foo');
-        $def->values(array('foo'));
+        $def->values(['foo']);
 
         $node = $def->getNode();
-        $this->assertEquals(array('foo'), $node->getValues());
+        $this->assertEquals(['foo'], $node->getValues());
     }
 
     public function testWithOneDistinctValue()
     {
         $def = new EnumNodeDefinition('foo');
-        $def->values(array('foo', 'foo'));
+        $def->values(['foo', 'foo']);
 
         $node = $def->getNode();
-        $this->assertEquals(array('foo'), $node->getValues());
+        $this->assertEquals(['foo'], $node->getValues());
     }
 
     /**
@@ -51,22 +51,22 @@ public function testNoValuesPassed()
     public function testWithNoValues()
     {
         $def = new EnumNodeDefinition('foo');
-        $def->values(array());
+        $def->values([]);
     }
 
     public function testGetNode()
     {
         $def = new EnumNodeDefinition('foo');
-        $def->values(array('foo', 'bar'));
+        $def->values(['foo', 'bar']);
 
         $node = $def->getNode();
-        $this->assertEquals(array('foo', 'bar'), $node->getValues());
+        $this->assertEquals(['foo', 'bar'], $node->getValues());
     }
 
     public function testSetDeprecated()
     {
         $def = new EnumNodeDefinition('foo');
-        $def->values(array('foo', 'bar'));
+        $def->values(['foo', 'bar']);
         $def->setDeprecated('The "%path%" node is deprecated.');
 
         $node = $def->getNode();
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php
index 99a10413768b..d58d42e0a305 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php
@@ -31,7 +31,7 @@ public function testIfTrueExpression()
             ->ifTrue()
             ->then($this->returnClosure('new_value'))
         ->end();
-        $this->assertFinalizedValueIs('new_value', $test, array('key' => true));
+        $this->assertFinalizedValueIs('new_value', $test, ['key' => true]);
 
         $test = $this->getTestBuilder()
             ->ifTrue(function ($v) { return true; })
@@ -58,7 +58,7 @@ public function testIfStringExpression()
             ->ifString()
             ->then($this->returnClosure('new_value'))
         ->end();
-        $this->assertFinalizedValueIs(45, $test, array('key' => 45));
+        $this->assertFinalizedValueIs(45, $test, ['key' => 45]);
     }
 
     public function testIfNullExpression()
@@ -67,7 +67,7 @@ public function testIfNullExpression()
             ->ifNull()
             ->then($this->returnClosure('new_value'))
         ->end();
-        $this->assertFinalizedValueIs('new_value', $test, array('key' => null));
+        $this->assertFinalizedValueIs('new_value', $test, ['key' => null]);
 
         $test = $this->getTestBuilder()
             ->ifNull()
@@ -82,7 +82,7 @@ public function testIfEmptyExpression()
             ->ifEmpty()
             ->then($this->returnClosure('new_value'))
         ->end();
-        $this->assertFinalizedValueIs('new_value', $test, array('key' => array()));
+        $this->assertFinalizedValueIs('new_value', $test, ['key' => []]);
 
         $test = $this->getTestBuilder()
             ->ifEmpty()
@@ -97,7 +97,7 @@ public function testIfArrayExpression()
             ->ifArray()
             ->then($this->returnClosure('new_value'))
         ->end();
-        $this->assertFinalizedValueIs('new_value', $test, array('key' => array()));
+        $this->assertFinalizedValueIs('new_value', $test, ['key' => []]);
 
         $test = $this->getTestBuilder()
             ->ifArray()
@@ -109,13 +109,13 @@ public function testIfArrayExpression()
     public function testIfInArrayExpression()
     {
         $test = $this->getTestBuilder()
-            ->ifInArray(array('foo', 'bar', 'value'))
+            ->ifInArray(['foo', 'bar', 'value'])
             ->then($this->returnClosure('new_value'))
         ->end();
         $this->assertFinalizedValueIs('new_value', $test);
 
         $test = $this->getTestBuilder()
-            ->ifInArray(array('foo', 'bar'))
+            ->ifInArray(['foo', 'bar'])
             ->then($this->returnClosure('new_value'))
         ->end();
         $this->assertFinalizedValueIs('value', $test);
@@ -124,13 +124,13 @@ public function testIfInArrayExpression()
     public function testIfNotInArrayExpression()
     {
         $test = $this->getTestBuilder()
-            ->ifNotInArray(array('foo', 'bar'))
+            ->ifNotInArray(['foo', 'bar'])
             ->then($this->returnClosure('new_value'))
         ->end();
         $this->assertFinalizedValueIs('new_value', $test);
 
         $test = $this->getTestBuilder()
-            ->ifNotInArray(array('foo', 'bar', 'value_from_config'))
+            ->ifNotInArray(['foo', 'bar', 'value_from_config'])
             ->then($this->returnClosure('new_value'))
         ->end();
         $this->assertFinalizedValueIs('new_value', $test);
@@ -142,7 +142,7 @@ public function testThenEmptyArrayExpression()
             ->ifString()
             ->thenEmptyArray()
         ->end();
-        $this->assertFinalizedValueIs(array(), $test);
+        $this->assertFinalizedValueIs([], $test);
     }
 
     /**
@@ -153,15 +153,15 @@ public function testcastToArrayExpression($configValue, $expectedValue)
         $test = $this->getTestBuilder()
             ->castToArray()
         ->end();
-        $this->assertFinalizedValueIs($expectedValue, $test, array('key' => $configValue));
+        $this->assertFinalizedValueIs($expectedValue, $test, ['key' => $configValue]);
     }
 
     public function castToArrayValues()
     {
-        yield array('value', array('value'));
-        yield array(-3.14, array(-3.14));
-        yield array(null, array(null));
-        yield array(array('value'), array('value'));
+        yield ['value', ['value']];
+        yield [-3.14, [-3.14]];
+        yield [null, [null]];
+        yield [['value'], ['value']];
     }
 
     /**
@@ -182,7 +182,7 @@ public function testThenUnsetExpression()
             ->ifString()
             ->thenUnset()
         ->end();
-        $this->assertEquals(array(), $this->finalizeTestBuilder($test));
+        $this->assertEquals([], $this->finalizeTestBuilder($test));
     }
 
     /**
@@ -238,7 +238,7 @@ protected function finalizeTestBuilder($testBuilder, $config = null)
             ->end()
             ->end()
             ->buildTree()
-            ->finalize(null === $config ? array('key' => 'value') : $config)
+            ->finalize(null === $config ? ['key' => 'value'] : $config)
         ;
     }
 
@@ -265,6 +265,6 @@ protected function returnClosure($val)
      */
     protected function assertFinalizedValueIs($value, $treeBuilder, $config = null)
     {
-        $this->assertEquals(array('key' => $value), $this->finalizeTestBuilder($treeBuilder, $config));
+        $this->assertEquals(['key' => $value], $this->finalizeTestBuilder($treeBuilder, $config));
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
index c425f0ed3d6d..d94912b78dc9 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
@@ -119,7 +119,7 @@ public function testDefinitionExampleGetsTransferredToNode()
         $builder = new TreeBuilder();
 
         $builder->root('test')
-            ->example(array('key' => 'value'))
+            ->example(['key' => 'value'])
             ->children()
                 ->node('child', 'variable')->info('child info')->defaultValue('default')->example('example')
             ->end()
diff --git a/src/Symfony/Component/Config/Tests/Definition/Dumper/YamlReferenceDumperTest.php b/src/Symfony/Component/Config/Tests/Definition/Dumper/YamlReferenceDumperTest.php
index bf4db95f4154..3cb9121ba602 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Dumper/YamlReferenceDumperTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Dumper/YamlReferenceDumperTest.php
@@ -28,12 +28,12 @@ public function testDumper()
 
     public function provideDumpAtPath()
     {
-        return array(
-            'Regular node' => array('scalar_true', <<<EOL
+        return [
+            'Regular node' => ['scalar_true', <<<EOL
 scalar_true:          true
 EOL
-            ),
-            'Array node' => array('array', <<<EOL
+            ],
+            'Array node' => ['array', <<<EOL
 # some info
 array:
     child1:               ~
@@ -44,12 +44,12 @@ public function provideDumpAtPath()
     # which should be indented
     child3:               ~ # Example: example setting
 EOL
-            ),
-            'Regular nested' => array('array.child2', <<<EOL
+            ],
+            'Regular nested' => ['array.child2', <<<EOL
 child2:               ~
 EOL
-            ),
-            'Prototype' => array('cms_pages.page', <<<EOL
+            ],
+            'Prototype' => ['cms_pages.page', <<<EOL
 # Prototype
 page:
 
@@ -58,15 +58,15 @@ public function provideDumpAtPath()
         title:                ~ # Required
         path:                 ~ # Required
 EOL
-            ),
-            'Nested prototype' => array('cms_pages.page.locale', <<<EOL
+            ],
+            'Nested prototype' => ['cms_pages.page.locale', <<<EOL
 # Prototype
 locale:
     title:                ~ # Required
     path:                 ~ # Required
 EOL
-            ),
-        );
+            ],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Config/Tests/Definition/EnumNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/EnumNodeTest.php
index e3e7ef05946f..206bfdd5b98f 100644
--- a/src/Symfony/Component/Config/Tests/Definition/EnumNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/EnumNodeTest.php
@@ -18,7 +18,7 @@ class EnumNodeTest extends TestCase
 {
     public function testFinalizeValue()
     {
-        $node = new EnumNode('foo', null, array('foo', 'bar'));
+        $node = new EnumNode('foo', null, ['foo', 'bar']);
         $this->assertSame('foo', $node->finalize('foo'));
     }
 
@@ -28,18 +28,18 @@ public function testFinalizeValue()
      */
     public function testConstructionWithNoValues()
     {
-        new EnumNode('foo', null, array());
+        new EnumNode('foo', null, []);
     }
 
     public function testConstructionWithOneValue()
     {
-        $node = new EnumNode('foo', null, array('foo'));
+        $node = new EnumNode('foo', null, ['foo']);
         $this->assertSame('foo', $node->finalize('foo'));
     }
 
     public function testConstructionWithOneDistinctValue()
     {
-        $node = new EnumNode('foo', null, array('foo', 'foo'));
+        $node = new EnumNode('foo', null, ['foo', 'foo']);
         $this->assertSame('foo', $node->finalize('foo'));
     }
 
@@ -49,7 +49,7 @@ public function testConstructionWithOneDistinctValue()
      */
     public function testFinalizeWithInvalidValue()
     {
-        $node = new EnumNode('foo', null, array('foo', 'bar'));
+        $node = new EnumNode('foo', null, ['foo', 'bar']);
         $node->finalize('foobar');
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/FinalizationTest.php b/src/Symfony/Component/Config/Tests/Definition/FinalizationTest.php
index d19fbd69ae88..be68a27c6906 100644
--- a/src/Symfony/Component/Config/Tests/Definition/FinalizationTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/FinalizationTest.php
@@ -42,27 +42,27 @@ public function testUnsetKeyWithDeepHierarchy()
             ->buildTree()
         ;
 
-        $a = array(
-            'level1' => array(
-                'level2' => array(
+        $a = [
+            'level1' => [
+                'level2' => [
                     'somevalue' => 'foo',
                     'anothervalue' => 'bar',
-                ),
+                ],
                 'level1_scalar' => 'foo',
-            ),
-        );
+            ],
+        ];
 
-        $b = array(
-            'level1' => array(
+        $b = [
+            'level1' => [
                 'level2' => false,
-            ),
-        );
+            ],
+        ];
 
-        $this->assertEquals(array(
-            'level1' => array(
+        $this->assertEquals([
+            'level1' => [
                 'level1_scalar' => 'foo',
-            ),
-        ), $this->process($tree, array($a, $b)));
+            ],
+        ], $this->process($tree, [$a, $b]));
     }
 
     protected function process(NodeInterface $tree, array $configs)
diff --git a/src/Symfony/Component/Config/Tests/Definition/FloatNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/FloatNodeTest.php
index b7ec12fa739a..8268fe83ba7b 100644
--- a/src/Symfony/Component/Config/Tests/Definition/FloatNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/FloatNodeTest.php
@@ -40,16 +40,16 @@ public function testValidNonEmptyValues($value)
 
     public function getValidValues()
     {
-        return array(
-            array(1798.0),
-            array(-678.987),
-            array(12.56E45),
-            array(0.0),
+        return [
+            [1798.0],
+            [-678.987],
+            [12.56E45],
+            [0.0],
             // Integer are accepted too, they will be cast
-            array(17),
-            array(-10),
-            array(0),
-        );
+            [17],
+            [-10],
+            [0],
+        ];
     }
 
     /**
@@ -64,15 +64,15 @@ public function testNormalizeThrowsExceptionOnInv
10000
alidValues($value)
 
     public function getInvalidValues()
     {
-        return array(
-            array(null),
-            array(''),
-            array('foo'),
-            array(true),
-            array(false),
-            array(array()),
-            array(array('foo' => 'bar')),
-            array(new \stdClass()),
-        );
+        return [
+            [null],
+            [''],
+            ['foo'],
+            [true],
+            [false],
+            [[]],
+            [['foo' => 'bar']],
+            [new \stdClass()],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/IntegerNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/IntegerNodeTest.php
index 55e8a137b648..b4c17e1cb9a3 100644
--- a/src/Symfony/Component/Config/Tests/Definition/IntegerNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/IntegerNodeTest.php
@@ -40,11 +40,11 @@ public function testValidNonEmptyValues($value)
 
     public function getValidValues()
     {
-        return array(
-            array(1798),
-            array(-678),
-            array(0),
-        );
+        return [
+            [1798],
+            [-678],
+            [0],
+        ];
     }
 
     /**
@@ -59,17 +59,17 @@ public function testNormalizeThrowsExceptionOnInvalidValues($value)
 
     public function getInvalidValues()
     {
-        return array(
-            array(null),
-            array(''),
-            array('foo'),
-            array(true),
-            array(false),
-            array(0.0),
-            array(0.1),
-            array(array()),
-            array(array('foo' => 'bar')),
-            array(new \stdClass()),
-        );
+        return [
+            [null],
+            [''],
+            ['foo'],
+            [true],
+            [false],
+            [0.0],
+            [0.1],
+            [[]],
+            [['foo' => 'bar']],
+            [new \stdClass()],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/MergeTest.php b/src/Symfony/Component/Config/Tests/Definition/MergeTest.php
index e539e25f3d02..5d37e137bd76 100644
--- a/src/Symfony/Component/Config/Tests/Definition/MergeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/MergeTest.php
@@ -33,13 +33,13 @@ public function testForbiddenOverwrite()
             ->buildTree()
         ;
 
-        $a = array(
+        $a = [
             'foo' => 'bar',
-        );
+        ];
 
-        $b = array(
+        $b = [
             'foo' => 'moo',
-        );
+        ];
 
         $tree->merge($a, $b);
     }
@@ -68,28 +68,28 @@ public function testUnsetKey()
             ->buildTree()
         ;
 
-        $a = array(
+        $a = [
             'foo' => 'bar',
-            'unsettable' => array(
+            'unsettable' => [
                 'foo' => 'a',
                 'bar' => 'b',
-            ),
+            ],
             'unsetted' => false,
-        );
+        ];
 
-        $b = array(
+        $b = [
             'foo' => 'moo',
             'bar' => 'b',
             'unsettable' => false,
-            'unsetted' => array('a', 'b'),
-        );
+            'unsetted' => ['a', 'b'],
+        ];
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'foo' => 'moo',
             'bar' => 'b',
             'unsettable' => false,
-            'unsetted' => array('a', 'b'),
-        ), $tree->merge($a, $b));
+            'unsetted' => ['a', 'b'],
+        ], $tree->merge($a, $b));
     }
 
     /**
@@ -114,17 +114,17 @@ public function testDoesNotAllowNewKeysInSubsequentConfigs()
             ->end()
             ->buildTree();
 
-        $a = array(
-            'test' => array(
-                'a' => array('value' => 'foo'),
-            ),
-        );
+        $a = [
+            'test' => [
+                'a' => ['value' => 'foo'],
+            ],
+        ];
 
-        $b = array(
-            'test' => array(
-                'b' => array('value' => 'foo'),
-            ),
-        );
+        $b = [
+            'test' => [
+                'b' => ['value' => 'foo'],
+            ],
+        ];
 
         $tree->merge($a, $b);
     }
@@ -148,24 +148,24 @@ public function testPerformsNoDeepMerging()
             ->buildTree()
         ;
 
-        $a = array(
-            'no_deep_merging' => array(
+        $a = [
+            'no_deep_merging' => [
                 'foo' => 'a',
                 'bar' => 'b',
-            ),
-        );
+            ],
+        ];
 
-        $b = array(
-            'no_deep_merging' => array(
+        $b = [
+            'no_deep_merging' => [
                 'c' => 'd',
-            ),
-        );
+            ],
+        ];
 
-        $this->assertEquals(array(
-            'no_deep_merging' => array(
+        $this->assertEquals([
+            'no_deep_merging' => [
                 'c' => 'd',
-            ),
-        ), $tree->merge($a, $b));
+            ],
+        ], $tree->merge($a, $b));
     }
 
     public function testPrototypeWithoutAKeyAttribute()
@@ -183,14 +183,14 @@ public function testPrototypeWithoutAKeyAttribute()
             ->buildTree()
         ;
 
-        $a = array(
-            'append_elements' => array('a', 'b'),
-        );
+        $a = [
+            'append_elements' => ['a', 'b'],
+        ];
 
-        $b = array(
-            'append_elements' => array('c', 'd'),
-        );
+        $b = [
+            'append_elements' => ['c', 'd'],
+        ];
 
-        $this->assertEquals(array('append_elements' => array('a', 'b', 'c', 'd')), $tree->merge($a, $b));
+        $this->assertEquals(['append_elements' => ['a', 'b', 'c', 'd']], $tree->merge($a, $b));
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/NormalizationTest.php b/src/Symfony/Component/Config/Tests/Definition/NormalizationTest.php
index 3273c78668f1..d6544ccc817e 100644
--- a/src/Symfony/Component/Config/Tests/Definition/NormalizationTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/NormalizationTest.php
@@ -30,7 +30,7 @@ public function testNormalizeEncoders($denormalized)
                     ->node('encoders', 'array')
                         ->useAttributeAsKey('class')
                         ->prototype('array')
-                            ->beforeNormalization()->ifString()->then(function ($v) { return array('algorithm' => $v); })->end()
+                            ->beforeNormalization()->ifString()->then(function ($v) { return ['algorithm' => $v]; })->end()
                             ->children()
                                 ->node('algorithm', 'scalar')->end()
                             ->end()
@@ -41,54 +41,54 @@ public function testNormalizeEncoders($denormalized)
             ->buildTree()
         ;
 
-        $normalized = array(
-            'encoders' => array(
-                'foo' => array('algorithm' => 'plaintext'),
-            ),
-        );
+        $normalized = [
+            'encoders' => [
+                'foo' => ['algorithm' => 'plaintext'],
+            ],
+        ];
 
         $this->assertNormalized($tree, $denormalized, $normalized);
     }
 
     public function getEncoderTests()
     {
-        $configs = array();
+        $configs = [];
 
         // XML
-        $configs[] = array(
-            'encoder' => array(
-                array('class' => 'foo', 'algorithm' => 'plaintext'),
-            ),
-        );
+        $configs[] = [
+            'encoder' => [
+                ['class' => 'foo', 'algorithm' => 'plaintext'],
+            ],
+        ];
 
         // XML when only one element of this type
-        $configs[] = array(
-            'encoder' => array('class' => 'foo', 'algorithm' => 'plaintext'),
-        );
+        $configs[] = [
+            'encoder' => ['class' => 'foo', 'algorithm' => 'plaintext'],
+        ];
 
         // YAML/PHP
-        $configs[] = array(
-            'encoders' => array(
-                array('class' => 'foo', 'algorithm' => 'plaintext'),
-            ),
-        );
+        $configs[] = [
+            'encoders' => [
+                ['class' => 'foo', 'algorithm' => 'plaintext'],
+            ],
+        ];
 
         // YAML/PHP
-        $configs[] = array(
-            'encoders' => array(
+        $configs[] = [
+            'encoders' => [
                 'foo' => 'plaintext',
-            ),
-        );
+            ],
+        ];
 
         // YAML/PHP
-        $configs[] = array(
-            'encoders' => array(
-                'foo' => array('algorithm' => 'plaintext'),
-            ),
-        );
+        $configs[] = [
+            'encoders' => [
+                'foo' => ['algorithm' => 'plaintext'],
+            ],
+        ];
 
         return array_map(function ($v) {
-            return array($v);
+            return [$v];
         }, $configs);
     }
 
@@ -114,28 +114,28 @@ public function testAnonymousKeysArray($denormalized)
             ->buildTree()
         ;
 
-        $normalized = array('logout' => array('handlers' => array('a', 'b', 'c')));
+        $normalized = ['logout' => ['handlers' => ['a', 'b', 'c']]];
 
         $this->assertNormalized($tree, $denormalized, $normalized);
     }
 
     public function getAnonymousKeysTests()
     {
-        $configs = array();
+        $configs = [];
 
-        $configs[] = array(
-            'logout' => array(
-                'handlers' => array('a', 'b', 'c'),
-            ),
-        );
+        $configs[] = [
+            'logout' => [
+                'handlers' => ['a', 'b', 'c'],
+            ],
+        ];
 
-        $configs[] = array(
-            'logout' => array(
-                'handler' => array('a', 'b', 'c'),
-            ),
-        );
+        $configs[] = [
+            'logout' => [
+                'handler' => ['a', 'b', 'c'],
+            ],
+        ];
 
-        return array_map(function ($v) { return array($v); }, $configs);
+        return array_map(function ($v) { return [$v]; }, $configs);
     }
 
     /**
@@ -143,30 +143,30 @@ public function getAnonymousKeysTests()
      */
     public function testNumericKeysAsAttributes($denormalized)
     {
-        $normalized = array(
-            'thing' => array(42 => array('foo', 'bar'), 1337 => array('baz', 'qux')),
-        );
+        $normalized = [
+            'thing' => [42 => ['foo', 'bar'], 1337 => ['baz', 'qux']],
+        ];
 
         $this->assertNormalized($this->getNumericKeysTestTree(), $denormalized, $normalized);
     }
 
     public function getNumericKeysTests()
     {
-        $configs = array();
+        $configs = [];
 
-        $configs[] = array(
-            'thing' => array(
-                42 => array('foo', 'bar'), 1337 => array('baz', 'qux'),
-            ),
-        );
+        $configs[] = [
+            'thing' => [
+                42 => ['foo', 'bar'], 1337 => ['baz', 'qux'],
+            ],
+        ];
 
-        $configs[] = array(
-            'thing' => array(
-                array('foo', 'bar', 'id' => 42), array('baz', 'qux', 'id' => 1337),
-            ),
-        );
+        $configs[] = [
+            'thing' => [
+                ['foo', 'bar', 'id' => 42], ['baz', 'qux', 'id' => 1337],
+            ],
+        ];
 
-        return array_map(function ($v) { return array($v); }, $configs);
+        return array_map(function ($v) { return [$v]; }, $configs);
     }
 
     /**
@@ -175,13 +175,13 @@ public function getNumericKeysTests()
      */
     public function testNonAssociativeArrayThrowsExceptionIfAttributeNotSet()
     {
-        $denormalized = array(
-            'thing' => array(
-                array('foo', 'bar'), array('baz', 'qux'),
-            ),
-        );
+        $denormalized = [
+            'thing' => [
+                ['foo', 'bar'], ['baz', 'qux'],
+            ],
+        ];
 
-        $this->assertNormalized($this->getNumericKeysTestTree(), $denormalized, array());
+        $this->assertNormalized($this->getNumericKeysTestTree(), $denormalized, []);
     }
 
     public function testAssociativeArrayPreserveKeys()
@@ -198,7 +198,7 @@ public function testAssociativeArrayPreserveKeys()
             ->buildTree()
         ;
 
-        $data = array('first' => array('foo' => 'bar'));
+        $data = ['first' => ['foo' => 'bar']];
 
         $this->assertNormalized($tree, $data, $data);
     }
diff --git a/src/Symfony/Component/Config/Tests/Definition/PrototypedArrayNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/PrototypedArrayNodeTest.php
index 731d7af25fa7..485b1321c820 100644
--- a/src/Symfony/Component/Config/Tests/Definition/PrototypedArrayNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/PrototypedArrayNodeTest.php
@@ -32,8 +32,8 @@ public function testGetDefaultValueReturnsDefaultValueForPrototypes()
         $node = new PrototypedArrayNode('root');
         $prototype = new ArrayNode(null, $node);
         $node->setPrototype($prototype);
-        $node->setDefaultValue(array('test'));
-        $this->assertEquals(array('test'), $node->getDefaultValue());
+        $node->setDefaultValue(['test']);
+        $this->assertEquals(['test'], $node->getDefaultValue());
     }
 
     // a remapped key (e.g. "mapping" -> "mappings") should be unset after being used
@@ -47,12 +47,12 @@ public function testRemappedKeysAreUnset()
         $prototype = new ScalarNode(null, $mappingsNode);
         $mappingsNode->setPrototype($prototype);
 
-        $remappings = array();
-        $remappings[] = array('mapping', 'mappings');
+        $remappings = [];
+        $remappings[] = ['mapping', 'mappings'];
         $node->setXmlRemappings($remappings);
 
-        $normalized = $node->normalize(array('mapping' => array('foo', 'bar')));
-        $this->assertEquals(array('mappings' => array('foo', 'bar')), $normalized);
+        $normalized = $node->normalize(['mapping' => ['foo', 'bar']]);
+        $this->assertEquals(['mappings' => ['foo', 'bar']], $normalized);
     }
 
     /**
@@ -83,12 +83,12 @@ public function testMappedAttributeKeyIsRemoved()
         $prototype->addChild(new ScalarNode('foo'));
         $node->setPrototype($prototype);
 
-        $children = array();
-        $children[] = array('id' => 'item_name', 'foo' => 'bar');
+        $children = [];
+        $children[] = ['id' => 'item_name', 'foo' => 'bar'];
         $normalized = $node->normalize($children);
 
-        $expected = array();
-        $expected['item_name'] = array('foo' => 'bar');
+        $expected = [];
+        $expected['item_name'] = ['foo' => 'bar'];
         $this->assertEquals($expected, $normalized);
     }
 
@@ -107,12 +107,12 @@ public function testMappedAttributeKeyNotRemoved()
         $prototype->addChild(new ScalarNode('id')); // the key attribute will remain
         $node->setPrototype($prototype);
 
-        $children = array();
-        $children[] = array('id' => 'item_name', 'foo' => 'bar');
+        $children = [];
+        $children[] = ['id' => 'item_name', 'foo' => 'bar'];
         $normalized = $node->normalize($children);
 
-        $expected = array();
-        $expected['item_name'] = array('id' => 'item_name', 'foo' => 'bar');
+        $expected = [];
+        $expected['item_name'] = ['id' => 'item_name', 'foo' => 'bar'];
         $this->assertEquals($expected, $normalized);
     }
 
@@ -121,50 +121,50 @@ public function testAddDefaultChildren()
         $node = $this->getPrototypeNodeWithDefaultChildren();
         $node->setAddChildrenIfNoneSet();
         $this->assertTrue($node->hasDefaultValue());
-        $this->assertEquals(array(array('foo' => 'bar')), $node->getDefaultValue());
+        $this->assertEquals([['foo' => 'bar']], $node->getDefaultValue());
 
         $node = $this->getPrototypeNodeWithDefaultChildren();
         $node->setKeyAttribute('foobar');
         $node->setAddChildrenIfNoneSet();
         $this->assertTrue($node->hasDefaultValue());
-        $this->assertEquals(array('defaults' => array('foo' => 'bar')), $node->getDefaultValue());
+        $this->assertEquals(['defaults' => ['foo' => 'bar']], $node->getDefaultValue());
 
         $node = $this->getPrototypeNodeWithDefaultChildren();
         $node->setKeyAttribute('foobar');
         $node->setAddChildrenIfNoneSet('defaultkey');
         $this->assertTrue($node->hasDefaultValue());
-        $this->assertEquals(array('defaultkey' => array('foo' => 'bar')), $node->getDefaultValue());
+        $this->assertEquals(['defaultkey' => ['foo' => 'bar']], $node->getDefaultValue());
 
         $node = $this->getPrototypeNodeWithDefaultChildren();
         $node->setKeyAttribute('foobar');
-        $node->setAddChildrenIfNoneSet(array('defaultkey'));
+        $node->setAddChildrenIfNoneSet(['defaultkey']);
         $this->assertTrue($node->hasDefaultValue());
-        $this->assertEquals(array('defaultkey' => array('foo' => 'bar')), $node->getDefaultValue());
+        $this->assertEquals(['defaultkey' => ['foo' => 'bar']], $node->getDefaultValue());
 
         $node = $this->getPrototypeNodeWithDefaultChildren();
         $node->setKeyAttribute('foobar');
-        $node->setAddChildrenIfNoneSet(array('dk1', 'dk2'));
+        $node->setAddChildrenIfNoneSet(['dk1', 'dk2']);
         $this->assertTrue($node->hasDefaultValue());
-        $this->assertEquals(array('dk1' => array('foo' => 'bar'), 'dk2' => array('foo' => 'bar')), $node->getDefaultValue());
+        $this->assertEquals(['dk1' => ['foo' => 'bar'], 'dk2' => ['foo' => 'bar']], $node->getDefaultValue());
 
         $node = $this->getPrototypeNodeWithDefaultChildren();
-        $node->setAddChildrenIfNoneSet(array(5, 6));
+        $node->setAddChildrenIfNoneSet([5, 6]);
         $this->assertTrue($node->hasDefaultValue());
-        $this->assertEquals(array(0 => array('foo' => 'bar'), 1 => array('foo' => 'bar')), $node->getDefaultValue());
+        $this->assertEquals([0 => ['foo' => 'bar'], 1 => ['foo' => 'bar']], $node->getDefaultValue());
 
         $node = $this->getPrototypeNodeWithDefaultChildren();
         $node->setAddChildrenIfNoneSet(2);
         $this->assertTrue($node->hasDefaultValue());
-        $this->assertEquals(array(array('foo' => 'bar'), array('foo' => 'bar')), $node->getDefaultValue());
+        $this->assertEquals([['foo' => 'bar'], ['foo' => 'bar']], $node->getDefaultValue());
     }
 
     public function testDefaultChildrenWinsOverDefaultValue()
     {
         $node = $this->getPrototypeNodeWithDefaultChildren();
         $node->setAddChildrenIfNoneSet();
-        $node->setDefaultValue(array('bar' => 'foo'));
+        $node->setDefaultValue(['bar' => 'foo']);
         $this->assertTrue($node->hasDefaultValue());
-        $this->assertEquals(array(array('foo' => 'bar')), $node->getDefaultValue());
+        $this->assertEquals([['foo' => 'bar']], $node->getDefaultValue());
     }
 
     protected function getPrototypeNodeWithDefaultChildren()
@@ -291,52 +291,52 @@ public function getDataForKeyRemovedLeftValueOnly()
 
         $variableValue = new VariableNode('value');
 
-        return array(
-           array(
+        return [
+           [
                $scalarValue,
-               array(
-                   array('id' => 'option1', 'value' => 'value1'),
-               ),
-               array('option1' => 'value1'),
-           ),
+               [
+                   ['id' => 'option1', 'value' => 'value1'],
+               ],
+               ['option1' => 'value1'],
+           ],
 
-           array(
+           [
                $scalarValue,
-               array(
-                   array('id' => 'option1', 'value' => 'value1'),
-                   array('id' => 'option2', 'value' => 'value2', 'foo' => 'foo2'),
-               ),
-               array(
+               [
+                   ['id' => 'option1', 'value' => 'value1'],
+                   ['id' => 'option2', 'value' => 'value2', 'foo' => 'foo2'],
+               ],
+               [
                    'option1' => 'value1',
-                   'option2' => array('value' => 'value2', 'foo' => 'foo2'),
-               ),
-           ),
+                   'option2' => ['value' => 'value2', 'foo' => 'foo2'],
+               ],
+           ],
 
-           array(
+           [
                $arrayValue,
-               array(
-                   array(
+               [
+                   [
                        'id' => 'option1',
-                       'value' => array('foo' => 'foo1', 'bar' => 'bar1'),
-                   ),
-               ),
-               array(
-                   'option1' => array('foo' => 'foo1', 'bar' => 'bar1'),
-               ),
-           ),
-
-           array($variableValue,
-               array(
-                   array(
-                       'id' => 'option1', 'value' => array('foo' => 'foo1', 'bar' => 'bar1'),
-                   ),
-                   array('id' => 'option2', 'value' => 'value2'),
-               ),
-               array(
-                   'option1' => array('foo' => 'foo1', 'bar' => 'bar1'),
+                       'value' => ['foo' => 'foo1', 'bar' => 'bar1'],
+                   ],
+               ],
+               [
+                   'option1' => ['foo' => 'foo1', 'bar' => 'bar1'],
+               ],
+           ],
+
+           [$variableValue,
+               [
+                   [
+                       'id' => 'option1', 'value' => ['foo' => 'foo1', 'bar' => 'bar1'],
+                   ],
+                   ['id' => 'option2', 'value' => 'value2'],
+               ],
+               [
+                   'option1' => ['foo' => 'foo1', 'bar' => 'bar1'],
                    'option2' => 'value2',
-               ),
-           ),
-        );
+               ],
+           ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/ScalarNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/ScalarNodeTest.php
index 481ef3f4969c..ada5b04be942 100644
--- a/src/Symfony/Component/Config/Tests/Definition/ScalarNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/ScalarNodeTest.php
@@ -28,17 +28,17 @@ public function testNormalize($value)
 
     public function getValidValues()
     {
-        return array(
-            array(false),
-            array(true),
-            array(null),
-            array(''),
-            array('foo'),
-            array(0),
-            array(1),
-            array(0.0),
-            array(0.1),
-        );
+        return [
+            [false],
+            [true],
+            [null],
+            [''],
+            ['foo'],
+            [0],
+            [1],
+            [0.0],
+            [0.1],
+        ];
     }
 
     public function testSetDeprecated()
@@ -62,12 +62,12 @@ public function testSetDeprecated()
         };
 
         $prevErrorHandler = set_error_handler($deprecationHandler);
-        $node->finalize(array());
+        $node->finalize([]);
         restore_error_handler();
         $this->assertSame(0, $deprecationTriggered, '->finalize() should not trigger if the deprecated node is not set');
 
         $prevErrorHandler = set_error_handler($deprecationHandler);
-        $node->finalize(array('foo' => ''));
+        $node->finalize(['foo' => '']);
         restore_error_handler();
         $this->assertSame(1, $deprecationTriggered, '->finalize() should trigger if the deprecated node is set');
     }
@@ -84,11 +84,11 @@ public function testNormalizeThrowsExceptionOnInvalidValues($value)
 
     public function getInvalidValues()
     {
-        return array(
-            array(array()),
-            array(array('foo' => 'bar')),
-            array(new \stdClass()),
-        );
+        return [
+            [[]],
+            [['foo' => 'bar']],
+            [new \stdClass()],
+        ];
     }
 
     public function testNormalizeThrowsExceptionWithoutHint()
@@ -102,7 +102,7 @@ public function testNormalizeThrowsExceptionWithoutHint()
             $this->setExpectedException('Symfony\Component\Config\Definition\Exception\InvalidTypeException', 'Invalid type for path "test". Expected scalar, but got array.');
         }
 
-        $node->normalize(array());
+        $node->normalize([]);
     }
 
     public function testNormalizeThrowsExceptionWithErrorMessage()
@@ -117,7 +117,7 @@ public function testNormalizeThrowsExceptionWithErrorMessage()
             $this->setExpectedException('Symfony\Component\Config\Definition\Exception\InvalidTypeException', "Invalid type for path \"test\". Expected scalar, but got array.\nHint: \"the test value\"");
         }
 
-        $node->normalize(array());
+        $node->normalize([]);
     }
 
     /**
@@ -135,15 +135,15 @@ public function testValidNonEmptyValues($value)
 
     public function getValidNonEmptyValues()
     {
-        return array(
-            array(false),
-            array(true),
-            array('foo'),
-            array(0),
-            array(1),
-            array(0.0),
-            array(0.1),
-        );
+        return [
+            [false],
+            [true],
+            ['foo'],
+            [0],
+            [1],
+            [0.0],
+            [0.1],
+        ];
     }
 
     /**
@@ -161,9 +161,9 @@ public function testNotAllowedEmptyValuesThrowException($value)
 
     public function getEmptyValues()
     {
-        return array(
-            array(null),
-            array(''),
-        );
+        return [
+            [null],
+            [''],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/DependencyInjection/ConfigCachePassTest.php b/src/Symfony/Component/Config/Tests/DependencyInjection/ConfigCachePassTest.php
index 58aeda682689..c2b95195dcc4 100644
--- a/src/Symfony/Component/Config/Tests/DependencyInjection/ConfigCachePassTest.php
+++ b/src/Symfony/Component/Config/Tests/DependencyInjection/ConfigCachePassTest.php
@@ -27,18 +27,18 @@ public function testThatCheckersAreProcessedInPriorityOrder()
         $container = new ContainerBuilder();
 
         $definition = $container->register('config_cache_factory')->addArgument(null);
-        $container->register('checker_2')->addTag('config_cache.resource_checker', array('priority' => 100));
-        $container->register('checker_1')->addTag('config_cache.resource_checker', array('priority' => 200));
+        $container->register('checker_2')->addTag('config_cache.resource_checker', ['priority' => 100]);
+        $container->register('checker_1')->addTag('config_cache.resource_checker', ['priority' => 200]);
         $container->register('checker_3')->addTag('config_cache.resource_checker');
 
         $pass = new ConfigCachePass();
         $pass->process($container);
 
-        $expected = new IteratorArgument(array(
+        $expected = new IteratorArgument([
             new Reference('checker_1'),
             new Reference('checker_2'),
             new Reference('checker_3'),
-        ));
+        ]);
         $this->assertEquals($expected, $definition->getArgument(0));
     }
 
diff --git a/src/Symfony/Component/Config/Tests/FileLocatorTest.php b/src/Symfony/Component/Config/Tests/FileLocatorTest.php
index 712050413152..0bd97f7d8a38 100644
--- a/src/Symfony/Component/Config/Tests/FileLocatorTest.php
+++ b/src/Symfony/Component/Config/Tests/FileLocatorTest.php
@@ -21,7 +21,7 @@ class FileLocatorTest extends TestCase
      */
     public function testIsAbsolutePath($path)
     {
-        $loader = new FileLocator(array());
+        $loader = new FileLocator([]);
         $r = new \ReflectionObject($loader);
         $m = $r->getMethod('isAbsolutePath');
         $m->setAccessible(true);
@@ -31,14 +31,14 @@ public function testIsAbsolutePath($path)
 
     public function getIsAbsolutePathTests()
     {
-        return array(
-            array('/foo.xml'),
-            array('c:\\\\foo.xml'),
-            array('c:/foo.xml'),
-            array('\\server\\foo.xml'),
-            array('https://server/foo.xml'),
-            array('phar://server/foo.xml'),
-        );
+        return [
+            ['/foo.xml'],
+            ['c:\\\\foo.xml'],
+            ['c:/foo.xml'],
+            ['\\server\\foo.xml'],
+            ['https://server/foo.xml'],
+            ['phar://server/foo.xml'],
+        ];
     }
 
     public function testLocate()
@@ -63,16 +63,16 @@ public function testLocate()
             '->locate() returns the absolute filename if the file exists in one of the paths given in the constructor'
         );
 
-        $loader = new FileLocator(array(__DIR__.'/Fixtures', __DIR__.'/Fixtures/Again'));
+        $loader = new FileLocator([__DIR__.'/Fixtures', __DIR__.'/Fixtures/Again']);
 
         $this->assertEquals(
-            array(__DIR__.'/Fixtures'.\DIRECTORY_SEPARATOR.'foo.xml', __DIR__.'/Fixtures/Again'.\DIRECTORY_SEPARATOR.'foo.xml'),
+            [__DIR__.'/Fixtures'.\DIRECTORY_SEPARATOR.'foo.xml', __DIR__.'/Fixtures/Again'.\DIRECTORY_SEPARATOR.'foo.xml'],
             $loader->locate('foo.xml', __DIR__, false),
             '->locate() returns an array of absolute filenames'
         );
 
         $this->assertEquals(
-            array(__DIR__.'/Fixtures'.\DIRECTORY_SEPARATOR.'foo.xml', __DIR__.'/Fixtures/Again'.\DIRECTORY_SEPARATOR.'foo.xml'),
+            [__DIR__.'/Fixtures'.\DIRECTORY_SEPARATOR.'foo.xml', __DIR__.'/Fixtures/Again'.\DIRECTORY_SEPARATOR.'foo.xml'],
             $loader->locate('foo.xml', __DIR__.'/Fixtures', false),
             '->locate() returns an array of absolute filenames'
         );
@@ -80,7 +80,7 @@ public function testLocate()
         $loader = new FileLocator(__DIR__.'/Fixtures/Again');
 
         $this->assertEquals(
-            array(__DIR__.'/Fixtures'.\DIRECTORY_SEPARATOR.'foo.xml', __DIR__.'/Fixtures/Again'.\DIRECTORY_SEPARATOR.'foo.xml'),
+            [__DIR__.'/Fixtures'.\DIRECTORY_SEPARATOR.'foo.xml', __DIR__.'/Fixtures/Again'.\DIRECTORY_SEPARATOR.'foo.xml'],
             $loader->locate('foo.xml', __DIR__.'/Fixtures', false),
             '->locate() returns an array of absolute filenames'
         );
@@ -92,7 +92,7 @@ public function testLocate()
      */
     public function testLocateThrowsAnExceptionIfTheFileDoesNotExists()
     {
-        $loader = new FileLocator(array(__DIR__.'/Fixtures'));
+        $loader = new FileLocator([__DIR__.'/Fixtures']);
 
         $loader->locate('foobar.xml', __DIR__);
     }
@@ -102,7 +102,7 @@ public function testLocateThrowsAnExceptionIfTheFileDoesNotExists()
      */
     public function testLocateThrowsAnExceptionIfTheFileDoesNotExistsInAbsolutePath()
     {
-        $loader = new FileLocator(array(__DIR__.'/Fixtures'));
+        $loader = new FileLocator([__DIR__.'/Fixtures']);
 
         $loader->locate(__DIR__.'/Fixtures/foobar.xml', __DIR__);
     }
@@ -113,7 +113,7 @@ public function testLocateThrowsAnExceptionIfTheFileDoesNotExistsInAbsolutePath(
      */
     public function testLocateEmpty()
     {
-        $loader = new FileLocator(array(__DIR__.'/Fixtures'));
+        $loader = new FileLocator([__DIR__.'/Fixtures']);
 
         $loader->locate(null, __DIR__);
     }
diff --git a/src/Symfony/Component/Config/Tests/Fixtures/Configuration/ExampleConfiguration.php b/src/Symfony/Component/Config/Tests/Fixtures/Configuration/ExampleConfiguration.php
index d44b67cc1997..3f02700a1818 100644
--- a/src/Symfony/Component/Config/Tests/Fixtures/Configuration/ExampleConfiguration.php
+++ b/src/Symfony/Component/Config/Tests/Fixtures/Configuration/ExampleConfiguration.php
@@ -32,14 +32,14 @@ public function getConfigTreeBuilder()
                 ->scalarNode('scalar_true')->defaultTrue()->end()
                 ->scalarNode('scalar_false')->defaultFalse()->end()
                 ->scalarNode('scalar_default')->defaultValue('default')->end()
-                ->scalarNode('scalar_array_empty')->defaultValue(array())->end()
-                ->scalarNode('scalar_array_defaults')->defaultValue(array('elem1', 'elem2'))->end()
+                ->scalarNode('scalar_array_empty')->defaultValue([])->end()
+                ->scalarNode('scalar_array_defaults')->defaultValue(['elem1', 'elem2'])->end()
                 ->scalarNode('scalar_required')->isRequired()->end()
                 ->scalarNode('scalar_deprecated')->setDeprecated()->end()
                 ->scalarNode('scalar_deprecated_with_message')->setDeprecated('Deprecation custom message for "%node%" at "%path%"')->end()
                 ->scalarNode('node_with_a_looong_name')->end()
-                ->enumNode('enum_with_default')->values(array('this', 'that'))->defaultValue('this')->end()
-                ->enumNode('enum')->values(array('this', 'that'))->end()
+                ->enumNode('enum_with_default')->values(['this', 'that'])->defaultValue('this')->end()
+                ->enumNode('enum')->values(['this', 'that'])->end()
                 ->arrayNode('array')
                     ->info('some info')
                     ->canBeUnset()
diff --git a/src/Symfony/Component/Config/Tests/Loader/DelegatingLoaderTest.php b/src/Symfony/Component/Config/Tests/Loader/DelegatingLoaderTest.php
index 3f4b21f34b09..6e2a6ba2229d 100644
--- a/src/Symfony/Component/Config/Tests/Loader/DelegatingLoaderTest.php
+++ b/src/Symfony/Component/Config/Tests/Loader/DelegatingLoaderTest.php
@@ -36,12 +36,12 @@ public function testSupports()
     {
         $loader1 = $this->getMockBuilder('Symfony\Component\Config\Loader\LoaderInterface')->getMock();
         $loader1->expects($this->once())->method('supports')->will($this->returnValue(true));
-        $loader = new DelegatingLoader(new LoaderResolver(array($loader1)));
+        $loader = new DelegatingLoader(new LoaderResolver([$loader1]));
         $this->assertTrue($loader->supports('foo.xml'), '->supports() returns true if the resource is loadable');
 
         $loader1 = $this->getMockBuilder('Symfony\Component\Config\Loader\LoaderInterface')->getMock();
         $loader1->expects($this->once())->method('supports')->will($this->returnValue(false));
-        $loader = new DelegatingLoader(new LoaderResolver(array($loader1)));
+        $loader = new DelegatingLoader(new LoaderResolver([$loader1]));
         $this->assertFalse($loader->supports('foo.foo'), '->supports() returns false if the resource is not loadable');
     }
 
@@ -50,7 +50,7 @@ public function testLoad()
         $loader = $this->getMockBuilder('Symfony\Component\Config\Loader\LoaderInterface')->getMock();
         $loader->expects($this->once())->method('supports')->will($this->returnValue(true));
         $loader->expects($this->once())->method('load');
-        $resolver = new LoaderResolver(array($loader));
+        $resolver = new LoaderResolver([$loader]);
         $loader = new DelegatingLoader($resolver);
 
         $loader->load('foo');
@@ -63,7 +63,7 @@ public function testLoadThrowsAnExceptionIfTheResourceCannotBeLoaded()
     {
         $loader = $this->getMockBuilder('Symfony\Component\Config\Loader\LoaderInterface')->getMock();
         $loader->expects($this->once())->method('supports')->will($this->returnValue(false));
-        $resolver = new LoaderResolver(array($loader));
+        $resolver = new LoaderResolver([$loader]);
         $loader = new DelegatingLoader($resolver);
 
         $loader->load('foo');
diff --git a/src/Symfony/Component/Config/Tests/Loader/FileLoaderTest.php b/src/Symfony/Component/Config/Tests/Loader/FileLoaderTest.php
index f8409df9d743..b59ace46f937 100644
--- a/src/Symfony/Component/Config/Tests/Loader/FileLoaderTest.php
+++ b/src/Symfony/Component/Config/Tests/Loader/FileLoaderTest.php
@@ -24,11 +24,11 @@ public function testImportWithFileLocatorDelegation()
 
         $locatorMockForAdditionalLoader = $this->getMockBuilder('Symfony\Component\Config\FileLocatorInterface')->getMock();
         $locatorMockForAdditionalLoader->expects($this->any())->method('locate')->will($this->onConsecutiveCalls(
-                array('path/to/file1'),                    // Default
-                array('path/to/file1', 'path/to/file2'),   // First is imported
-                array('path/to/file1', 'path/to/file2'),   // Second is imported
-                array('path/to/file1'),                    // Exception
-                array('path/to/file1', 'path/to/file2')    // Exception
+                ['path/to/file1'],                    // Default
+                ['path/to/file1', 'path/to/file2'],   // First is imported
+                ['path/to/file1', 'path/to/file2'],   // Second is imported
+                ['path/to/file1'],                    // Exception
+                ['path/to/file1', 'path/to/file2']    // Exception
                 ));
 
         $fileLoader = new TestFileLoader($locatorMock);
@@ -38,7 +38,7 @@ public function testImportWithFileLocatorDelegation()
         $additionalLoader = new TestFileLoader($locatorMockForAdditionalLoader);
         $additionalLoader->setCurrentDir('.');
 
-        $fileLoader->setResolver($loaderResolver = new LoaderResolver(array($fileLoader, $additionalLoader)));
+        $fileLoader->setResolver($loaderResolver = new LoaderResolver([$fileLoader, $additionalLoader]));
 
         // Default case
         $this->assertSame('path/to/file1', $fileLoader->import('my_resource'));
@@ -118,7 +118,7 @@ public function removeLoading($resource)
 
     public function clearLoading()
     {
-        self::$loading = array();
+        self::$loading = [];
     }
 
     public function setSupports($supports)
diff --git a/src/Symfony/Component/Config/Tests/Loader/LoaderResolverTest.php b/src/Symfony/Component/Config/Tests/Loader/LoaderResolverTest.php
index 0bf56b610ebd..487dc43adc31 100644
--- a/src/Symfony/Component/Config/Tests/Loader/LoaderResolverTest.php
+++ b/src/Symfony/Component/Config/Tests/Loader/LoaderResolverTest.php
@@ -18,22 +18,22 @@ class LoaderResolverTest extends TestCase
 {
     public function testConstructor()
     {
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             $loader = $this->getMockBuilder('Symfony\Component\Config\Loader\LoaderInterface')->getMock(),
-        ));
+        ]);
 
-        $this->assertEquals(array($loader), $resolver->getLoaders(), '__construct() takes an array of loaders as its first argument');
+        $this->assertEquals([$loader], $resolver->getLoaders(), '__construct() takes an array of loaders as its first argument');
     }
 
     public function testResolve()
     {
         $loader = $this->getMockBuilder('Symfony\Component\Config\Loader\LoaderInterface')->getMock();
-        $resolver = new LoaderResolver(array($loader));
+        $resolver = new LoaderResolver([$loader]);
         $this->assertFalse($resolver->resolve('foo.foo'), '->resolve() returns false if no loader is able to load the resource');
 
         $loader = $this->getMockBuilder('Symfony\Component\Config\Loader\LoaderInterface')->getMock();
         $loader->expects($this->once())->method('supports')->will($this->returnValue(true));
-        $resolver = new LoaderResolver(array($loader));
+        $resolver = new LoaderResolver([$loader]);
         $this->assertEquals($loader, $resolver->resolve(function () {}), '->resolve() returns the loader for the given resource');
     }
 
@@ -42,6 +42,6 @@ public function testLoaders()
         $resolver = new LoaderResolver();
         $resolver->addLoader($loader = $this->getMockBuilder('Symfony\Component\Config\Loader\LoaderInterface')->getMock());
 
-        $this->assertEquals(array($loader), $resolver->getLoaders(), 'addLoader() adds a loader');
+        $this->assertEquals([$loader], $resolver->getLoaders(), 'addLoader() adds a loader');
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Resource/DirectoryResourceTest.php b/src/Symfony/Component/Config/Tests/Resource/DirectoryResourceTest.php
index cf20e43b5002..85f6c02ee6ee 100644
--- a/src/Symfony/Component/Config/Tests/Resource/DirectoryResourceTest.php
+++ b/src/Symfony/Component/Config/Tests/Resource/DirectoryResourceTest.php
@@ -178,6 +178,6 @@ public function testResourcesWithDifferentPatternsAreDifferent()
         $resourceA = new DirectoryResource($this->directory, '/.xml$/');
         $resourceB = new DirectoryResource($this->directory, '/.yaml$/');
 
-        $this->assertCount(2, array_unique(array($resourceA, $resourceB)));
+        $this->assertCount(2, array_unique([$resourceA, $resourceB]));
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Resource/GlobResourceTest.php b/src/Symfony/Component/Config/Tests/Resource/GlobResourceTest.php
index c66770c3051c..cfbfd2b4554e 100644
--- a/src/Symfony/Component/Config/Tests/Resource/GlobResourceTest.php
+++ b/src/Symfony/Component/Config/Tests/Resource/GlobResourceTest.php
@@ -33,7 +33,7 @@ public function testIterator()
         $paths = iterator_to_array($resource);
 
         $file = $dir.'/Resource'.\DIRECTORY_SEPARATOR.'ConditionalClass.php';
-        $this->assertEquals(array($file => new \SplFileInfo($file)), $paths);
+        $this->assertEquals([$file => new \SplFileInfo($file)], $paths);
         $this->assertInstanceOf('SplFileInfo', current($paths));
         $this->assertSame($dir, $resource->getPrefix());
 
@@ -42,7 +42,7 @@ public function testIterator()
         $paths = iterator_to_array($resource);
 
         $file = $dir.\DIRECTORY_SEPARATOR.'Resource'.\DIRECTORY_SEPARATOR.'ConditionalClass.php';
-        $this->assertEquals(array($file => $file), $paths);
+        $this->assertEquals([$file => $file], $paths);
         $this->assertInstanceOf('SplFileInfo', current($paths));
         $this->assertSame($dir, $resource->getPrefix());
     }
diff --git a/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php b/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
index 61b0fdf7345b..e4f8bed87c86 100644
--- a/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
+++ b/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
@@ -110,33 +110,33 @@ public function testHashedSignature($changeExpected, $changedLine, $changedCode)
 
     public function provideHashedSignature()
     {
-        yield array(0, 0, "// line change\n\n");
-        yield array(1, 0, '/** class docblock */');
-        yield array(1, 1, 'abstract class %s');
-        yield array(1, 1, 'final class %s');
-        yield array(1, 1, 'class %s extends Exception');
-        yield array(1, 1, 'class %s implements '.DummyInterface::class);
-        yield array(1, 3, 'const FOO = 456;');
-        yield array(1, 3, 'const BAR = 123;');
-        yield array(1, 4, '/** pub docblock */');
-        yield array(1, 5, 'protected $pub = array();');
-        yield array(1, 5, 'public $pub = array(123);');
-        yield array(1, 6, '/** prot docblock */');
-        yield array(1, 7, 'private $prot;');
-        yield array(0, 8, '/** priv docblock */');
-        yield array(0, 9, 'private $priv = 123;');
-        yield array(1, 10, '/** pub docblock */');
+        yield [0, 0, "// line change\n\n"];
+        yield [1, 0, '/** class docblock */'];
+        yield [1, 1, 'abstract class %s'];
+        yield [1, 1, 'final class %s'];
+        yield [1, 1, 'class %s extends Exception'];
+        yield [1, 1, 'class %s implements '.DummyInterface::class];
+        yield [1, 3, 'const FOO = 456;'];
+        yield [1, 3, 'const BAR = 123;'];
+        yield [1, 4, '/** pub docblock */'];
+        yield [1, 5, 'protected $pub = array();'];
+        yield [1, 5, 'public $pub = array(123);'];
+        yield [1, 6, '/** prot docblock */'];
+        yield [1, 7, 'private $prot;'];
+        yield [0, 8, '/** priv docblock */'];
+        yield [0, 9, 'private $priv = 123;'];
+        yield [1, 10, '/** pub docblock */'];
         if (\PHP_VERSION_ID >= 50600) {
-            yield array(1, 11, 'public function pub(...$arg) {}');
+            yield [1, 11, 'public function pub(...$arg) {}'];
         }
         if (\PHP_VERSION_ID >= 70000) {
-            yield array(1, 11, 'public function pub($arg = null): Foo {}');
+            yield [1, 11, 'public function pub($arg = null): Foo {}'];
         }
-        yield array(0, 11, "public function pub(\$arg = null) {\nreturn 123;\n}");
-        yield array(1, 12, '/** prot docblock */');
-        yield array(1, 13, 'protected function prot($a = array(123)) {}');
-        yield array(0, 14, '/** priv docblock */');
-        yield array(0, 15, '');
+        yield [0, 11, "public function pub(\$arg = null) {\nreturn 123;\n}"];
+        yield [1, 12, '/** prot docblock */'];
+        yield [1, 13, 'protected function prot($a = array(123)) {}'];
+        yield [0, 14, '/** priv docblock */'];
+        yield [0, 15, ''];
     }
 
     public function testEventSubscriber()
@@ -144,7 +144,7 @@ public function testEventSubscriber()
         $res = new ReflectionClassResource(new \ReflectionClass(TestEventSubscriber::class));
         $this->assertTrue($res->isFresh(0));
 
-        TestEventSubscriber::$subscribedEvents = array(123);
+        TestEventSubscriber::$subscribedEvents = [123];
         $this->assertFalse($res->isFresh(0));
 
         $res = new ReflectionClassResource(new \ReflectionClass(TestEventSubscriber::class));
@@ -156,7 +156,7 @@ public function testServiceSubscriber()
         $res = new ReflectionClassResource(new \ReflectionClass(TestServiceSubscriber::class));
         $this->assertTrue($res->isFresh(0));
 
-        TestServiceSubscriber::$subscribedServices = array(123);
+        TestServiceSubscriber::$subscribedServices = [123];
         $this->assertFalse($res->isFresh(0));
 
         $res = new ReflectionClassResource(new \ReflectionClass(TestServiceSubscriber::class));
@@ -170,7 +170,7 @@ interface DummyInterface
 
 class TestEventSubscriber implements EventSubscriberInterface
 {
-    public static $subscribedEvents = array();
+    public static $subscribedEvents = [];
 
     public static function getSubscribedEvents()
     {
@@ -180,7 +180,7 @@ public static function getSubscribedEvents()
 
 class TestServiceSubscriber implements ServiceSubscriberInterface
 {
-    public static $subscribedServices = array();
+    public static $subscribedServices = [];
 
     public static function getSubscribedServices()
     {
diff --git a/src/Symfony/Component/Config/Tests/ResourceCheckerConfigCacheTest.php b/src/Symfony/Component/Config/Tests/ResourceCheckerConfigCacheTest.php
index bb29ac02a4ef..a2c2eeb811b2 100644
--- a/src/Symfony/Component/Config/Tests/ResourceCheckerConfigCacheTest.php
+++ b/src/Symfony/Component/Config/Tests/ResourceCheckerConfigCacheTest.php
@@ -27,7 +27,7 @@ protected function setUp()
 
     protected function tearDown()
     {
-        $files = array($this->cacheFile, "{$this->cacheFile}.meta");
+        $files = [$this->cacheFile, "{$this->cacheFile}.meta"];
 
         foreach ($files as $file) {
             if (file_exists($file)) {
@@ -52,7 +52,7 @@ public function testCacheIsNotFreshIfEmpty()
             It does not matter if you provide checkers or not. */
 
         unlink($this->cacheFile); // remove tempnam() side effect
-        $cache = new ResourceCheckerConfigCache($this->cacheFile, array($checker));
+        $cache = new ResourceCheckerConfigCache($this->cacheFile, [$checker]);
 
         $this->assertFalse($cache->isFresh());
     }
@@ -67,7 +67,7 @@ public function testCacheIsFreshIfNoCheckerProvided()
 
     public function testCacheIsFreshIfEmptyCheckerIteratorProvided()
     {
-        $cache = new ResourceCheckerConfigCache($this->cacheFile, new \ArrayIterator(array()));
+        $cache = new ResourceCheckerConfigCache($this->cacheFile, new \ArrayIterator([]));
         $this->assertTrue($cache->isFresh());
     }
 
@@ -75,7 +75,7 @@ public function testResourcesWithoutcheckersAreIgnoredAndConsideredFresh()
     {
         /* As in the previous test, but this time we have a resource. */
         $cache = new ResourceCheckerConfigCache($this->cacheFile);
-        $cache->write('', array(new ResourceStub()));
+        $cache->write('', [new ResourceStub()]);
 
         $this->assertTrue($cache->isFresh()); // no (matching) ResourceChecker passed
     }
@@ -92,8 +92,8 @@ public function testIsFreshWithchecker()
                   ->method('isFresh')
                   ->willReturn(true);
 
-        $cache = new ResourceCheckerConfigCache($this->cacheFile, array($checker));
-        $cache->write('', array(new ResourceStub()));
+        $cache = new ResourceCheckerConfigCache($this->cacheFile, [$checker]);
+        $cache->write('', [new ResourceStub()]);
 
         $this->assertTrue($cache->isFresh());
     }
@@ -110,8 +110,8 @@ public function testIsNotFreshWithchecker()
                   ->method('isFresh')
                   ->willReturn(false);
 
-        $cache = new ResourceCheckerConfigCache($this->cacheFile, array($checker));
-        $cache->write('', array(new ResourceStub()));
+        $cache = new ResourceCheckerConfigCache($this->cacheFile, [$checker]);
+        $cache->write('', [new ResourceStub()]);
 
         $this->assertFalse($cache->isFresh());
     }
@@ -119,8 +119,8 @@ public function testIsNotFreshWithchecker()
     public function testCacheIsNotFreshWhenUnserializeFails()
     {
         $checker = $this->getMockBuilder('\Symfony\Component\Config\ResourceCheckerInterface')->getMock();
-        $cache = new ResourceCheckerConfigCache($this->cacheFile, array($checker));
-        $cache->write('foo', array(new FileResource(__FILE__)));
+        $cache = new ResourceCheckerConfigCache($this->cacheFile, [$checker]);
+        $cache->write('foo', [new FileResource(__FILE__)]);
 
         $metaFile = "{$this->cacheFile}.meta";
         file_put_contents($metaFile, str_replace('FileResource', 'ClassNotHere', file_get_contents($metaFile)));
@@ -139,8 +139,8 @@ public function testCacheKeepsContent()
     public function testCacheIsNotFreshIfNotExistsMetaFile()
     {
         $checker = $this->getMockBuilder('\Symfony\Component\Config\ResourceCheckerInterface')->getMock();
-        $cache = new ResourceCheckerConfigCache($this->cacheFile, array($checker));
-        $cache->write('foo', array(new FileResource(__FILE__)));
+        $cache = new ResourceCheckerConfigCache($this->cacheFile, [$checker]);
+        $cache->write('foo', [new FileResource(__FILE__)]);
 
         $metaFile = "{$this->cacheFile}.meta";
         unlink($metaFile);
diff --git a/src/Symfony/Component/Config/Tests/Util/XmlUtilsTest.php b/src/Symfony/Component/Config/Tests/Util/XmlUtilsTest.php
index 10b4a7a9b4dc..0a6637f78536 100644
--- a/src/Symfony/Component/Config/Tests/Util/XmlUtilsTest.php
+++ b/src/Symfony/Component/Config/Tests/Util/XmlUtilsTest.php
@@ -52,14 +52,14 @@ public function testLoadFile()
         $mock->expects($this->exactly(2))->method('validate')->will($this->onConsecutiveCalls(false, true));
 
         try {
-            XmlUtils::loadFile($fixtures.'valid.xml', array($mock, 'validate'));
+            XmlUtils::loadFile($fixtures.'valid.xml', [$mock, 'validate']);
             $this->fail();
         } catch (\InvalidArgumentException $e) {
             $this->assertRegExp('/The XML file ".+" is not valid\./', $e->getMessage());
         }
 
-        $this->assertInstanceOf('DOMDocument', XmlUtils::loadFile($fixtures.'valid.xml', array($mock, 'validate')));
-        $this->assertSame(array(), libxml_get_errors());
+        $this->assertInstanceOf('DOMDocument', XmlUtils::loadFile($fixtures.'valid.xml', [$mock, 'validate']));
+        $this->assertSame([], libxml_get_errors());
     }
 
     /**
@@ -73,16 +73,16 @@ public function testParseWithInvalidValidatorCallable()
         $mock = $this->getMockBuilder(__NAMESPACE__.'\Validator')->getMock();
         $mock->expects($this->once())->method('validate')->willReturn(false);
 
-        XmlUtils::parse(file_get_contents($fixtures.'valid.xml'), array($mock, 'validate'));
+        XmlUtils::parse(file_get_contents($fixtures.'valid.xml'), [$mock, 'validate']);
     }
 
     public function testLoadFileWithInternalErrorsEnabled()
     {
         $internalErrors = libxml_use_internal_errors(true);
 
-        $this->assertSame(array(), libxml_get_errors());
+        $this->assertSame([], libxml_get_errors());
         $this->assertInstanceOf('DOMDocument', XmlUtils::loadFile(__DIR__.'/../Fixtures/Util/invalid_schema.xml'));
-        $this->assertSame(array(), libxml_get_errors());
+        $this->assertSame([], libxml_get_errors());
 
         libxml_clear_errors();
         libxml_use_internal_errors($internalErrors);
@@ -101,25 +101,25 @@ public function testConvertDomToArray($expected, $xml, $root = false, $checkPref
 
     public function getDataForConvertDomToArray()
     {
-        return array(
-            array(null, ''),
-            array('bar', 'bar'),
-            array(array('bar' => 'foobar'), '<foo bar="foobar" />', true),
-            array(array('foo' => null), '<foo />'),
-            array(array('foo' => 'bar'), '<foo>bar</foo>'),
-            array(array('foo' => array('foo' => 'bar')), '<foo foo="bar"/>'),
-            array(array('foo' => array('foo' => 0)), '<foo><foo>0</foo></foo>'),
-            array(array('foo' => array('foo' => 'bar')), '<foo><foo>bar</foo></foo>'),
-            array(array('foo' => array('foo' => 'bar', 'value' => 'text')), '<foo foo="bar">text</foo>'),
-            array(array('foo' => array('attr' => 'bar', 'foo' => 'text')), '<foo attr="bar"><foo>text</foo></foo>'),
-            array(array('foo' => array('bar', 'text')), '<foo>bar</foo><foo>text</foo>'),
-            array(array('foo' => array(array('foo' => 'bar'), array('foo' => 'text'))), '<foo foo="bar"/><foo foo="text" />'),
-            array(array('foo' => array('foo' => array('bar', 'text'))), '<foo foo="bar"><foo>text</foo></foo>'),
-            array(array('foo' => 'bar'), '<foo><!-- Comment -->bar</foo>'),
-            array(array('foo' => 'text'), '<foo xmlns:h="http://www.example.org/bar" h:bar="bar">text</foo>'),
-            array(array('foo' => array('bar' => 'bar', 'value' => 'text')), '<foo xmlns:h="http://www.example.org/bar" h:bar="bar">text</foo>', false, false),
-            array(array('attr' => 1, 'b' => 'hello'), '<foo:a xmlns:foo="http://www.example.org/foo" xmlns:h="http://www.example.org/bar" attr="1" h:bar="bar"><foo:b>hello</foo:b><h:c>2</h:c></foo:a>', true),
-        );
+        return [
+            [null, ''],
+            ['bar', 'bar'],
+            [['bar' => 'foobar'], '<foo bar="foobar" />', true],
+            [['foo' => null], '<foo />'],
+            [['foo' => 'bar'], '<foo>bar</foo>'],
+            [['foo' => ['foo' => 'bar']], '<foo foo="bar"/>'],
+            [['foo' => ['foo' => 0]], '<foo><foo>0</foo></foo>'],
+            [['foo' => ['foo' => 'bar']], '<foo><foo>bar</foo></foo>'],
+            [['foo' => ['foo' => 'bar', 'value' => 'text']], '<foo foo="bar">text</foo>'],
+            [['foo' => ['attr' => 'bar', 'foo' => 'text']], '<foo attr="bar"><foo>text</foo></foo>'],
+            [['foo' => ['bar', 'text']], '<foo>bar</foo><foo>text</foo>'],
+            [['foo' => [['foo' => 'bar'], ['foo' => 'text']]], '<foo foo="bar"/><foo foo="text" />'],
+            [['foo' => ['foo' => ['bar', 'text']]], '<foo foo="bar"><foo>text</foo></foo>'],
+            [['foo' => 'bar'], '<foo><!-- Comment -->bar</foo>'],
+            [['foo' => 'text'], '<foo xmlns:h="http://www.example.org/bar" h:bar="bar">text</foo>'],
+            [['foo' => ['bar' => 'bar', 'value' => 'text']], '<foo xmlns:h="http://www.example.org/bar" h:bar="bar">text</foo>', false, false],
+            [['attr' => 1, 'b' => 'hello'], '<foo:a xmlns:foo="http://www.example.org/foo" xmlns:h="http://www.example.org/bar" attr="1" h:bar="bar"><foo:b>hello</foo:b><h:c>2</h:c></foo:a>', true],
+        ];
     }
 
     /**
@@ -132,34 +132,34 @@ public function testPhpize($expected, $value)
 
     public function getDataForPhpize()
     {
-        return array(
-            array('', ''),
-            array(null, 'null'),
-            array(true, 'true'),
-            array(false, 'false'),
-            array(null, 'Null'),
-            array(true, 'True'),
-            array(false, 'False'),
-            array(0, '0'),
-            array(1, '1'),
-            array(-1, '-1'),
-            array(0777, '0777'),
-            array(255, '0xFF'),
-            array(100.0, '1e2'),
-            array(-120.0, '-1.2E2'),
-            array(-10100.1, '-10100.1'),
-            array('-10,100.1', '-10,100.1'),
-            array('1234 5678 9101 1121 3141', '1234 5678 9101 1121 3141'),
-            array('1,2,3,4', '1,2,3,4'),
-            array('11,22,33,44', '11,22,33,44'),
-            array('11,222,333,4', '11,222,333,4'),
-            array('1,222,333,444', '1,222,333,444'),
-            array('11,222,333,444', '11,222,333,444'),
-            array('111,222,333,444', '111,222,333,444'),
-            array('1111,2222,3333,4444,5555', '1111,2222,3333,4444,5555'),
-            array('foo', 'foo'),
-            array(6, '0b0110'),
-        );
+        return [
+            ['', ''],
+            [null, 'null'],
+            [true, 'true'],
+            [false, 'false'],
+            [null, 'Null'],
+            [true, 'True'],
+            [false, 'False'],
+            [0, '0'],
+            [1, '1'],
+            [-1, '-1'],
+            [0777, '0777'],
+            [255, '0xFF'],
+            [100.0, '1e2'],
+            [-120.0, '-1.2E2'],
+            [-10100.1, '-10100.1'],
+            ['-10,100.1', '-10,100.1'],
+            ['1234 5678 9101 1121 3141', '1234 5678 9101 1121 3141'],
+            ['1,2,3,4', '1,2,3,4'],
+            ['11,22,33,44', '11,22,33,44'],
+            ['11,222,333,4', '11,222,333,4'],
+            ['1,222,333,444', '1,222,333,444'],
+            ['11,222,333,444', '11,222,333,444'],
+            ['111,222,333,444', '111,222,333,444'],
+            ['1111,2222,3333,4444,5555', '1111,2222,3333,4444,5555'],
+            ['foo', 'foo'],
+            [6, '0b0110'],
+        ];
     }
 
     public function testLoadEmptyXmlFile()
diff --git a/src/Symfony/Component/Config/Util/XmlUtils.php b/src/Symfony/Component/Config/Util/XmlUtils.php
index 8ad58d61e6ab..df1edd68bd79 100644
--- a/src/Symfony/Component/Config/Util/XmlUtils.php
+++ b/src/Symfony/Component/Config/Util/XmlUtils.php
@@ -158,9 +158,9 @@ public static function convertDomElementToArray(\DOMElement $element, $checkPref
     {
         $prefix = (string) $element->prefix;
         $empty = true;
-        $config = array();
+        $config = [];
         foreach ($element->attributes as $name => $node) {
-            if ($checkPrefix && !\in_array((string) $node->prefix, array('', $prefix), true)) {
+            if ($checkPrefix && !\in_array((string) $node->prefix, ['', $prefix], true)) {
                 continue;
             }
             $config[$name] = static::phpize($node->value);
@@ -182,7 +182,7 @@ public static function convertDomElementToArray(\DOMElement $element, $checkPref
                 $key = $node->localName;
                 if (isset($config[$key])) {
                     if (!\is_array($config[$key]) || !\is_int(key($config[$key]))) {
-                        $config[$key] = array($config[$key]);
+                        $config[$key] = [$config[$key]];
                     }
                     $config[$key][] = $value;
                 } else {
@@ -249,7 +249,7 @@ public static function phpize($value)
 
     protected static function getXmlErrors($internalErrors)
     {
-        $errors = array();
+        $errors = [];
         foreach (libxml_get_errors() as $error) {
             $errors[] = sprintf('[%s %s] %s (in %s - line %d, column %d)',
                 LIBXML_ERR_WARNING == $error->level ? 'WARNING' : 'ERROR',
diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
index b90b03ecef22..0d5200745402 100644
--- a/src/Symfony/Component/Console/Application.php
+++ b/src/Symfony/Component/Console/Application.php
@@ -61,7 +61,7 @@
  */
 class Application
 {
-    private $commands = array();
+    private $commands = [];
     private $wantHelps = false;
     private $runningCommand;
     private $name;
@@ -196,17 +196,17 @@ public function run(InputInterface $input = null, OutputInterface $output = null
      */
     public function doRun(InputInterface $input, OutputInterface $output)
     {
-        if (true === $input->hasParameterOption(array('--version', '-V'), true)) {
+        if (true === $input->hasParameterOption(['--version', '-V'], true)) {
             $output->writeln($this->getLongVersion());
 
             return 0;
         }
 
         $name = $this->getCommandName($input);
-        if (true === $input->hasParameterOption(array('--help', '-h'), true)) {
+        if (true === $input->hasParameterOption(['--help', '-h'], true)) {
             if (!$name) {
                 $name = 'help';
-                $input = new ArrayInput(array('command_name' => $this->defaultCommand));
+                $input = new ArrayInput(['command_name' => $this->defaultCommand]);
             } else {
                 $this->wantHelps = true;
             }
@@ -217,9 +217,9 @@ public function doRun(InputInterface $input, OutputInterface $output)
             $definition = $this->getDefinition();
             $definition->setArguments(array_merge(
                 $definition->getArguments(),
-                array(
+                [
                     'command' => new InputArgument('command', InputArgument::OPTIONAL, $definition->getArgument('command')->getDescription(), $name),
-                )
+                ]
             ));
         }
 
@@ -521,7 +521,7 @@ public function has($name)
      */
     public function getNamespaces()
     {
-        $namespaces = array();
+        $namespaces = [];
         foreach ($this->all() as $command) {
             $namespaces = array_merge($namespaces, $this->extractAllNamespaces($command->getName()));
 
@@ -588,7 +588,7 @@ public function find($name)
     {
         $this->init();
 
-        $aliases = array();
+        $aliases = [];
         $allCommands = $this->commandLoader ? array_merge($this->commandLoader->getNames(), array_keys($this->commands)) : array_keys($this->commands);
         $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]).'[^:]*'; }, $name);
         $commands = preg_grep('{^'.$expr.'}', $allCommands);
@@ -681,7 +681,7 @@ public function all($namespace = null)
             return $commands;
         }
 
-        $commands = array();
+        $commands = [];
         foreach ($this->commands as $name => $command) {
             if ($namespace === $this->extractNamespace($name, substr_count($namespace, ':') + 1)) {
                 $commands[$name] = $command;
@@ -708,7 +708,7 @@ public function all($namespace = null)
      */
     public static function getAbbreviations($names)
     {
-        $abbrevs = array();
+        $abbrevs = [];
         foreach ($names as $name) {
             for ($len = \strlen($name); $len > 0; --$len) {
                 $abbrev = substr($name, 0, $len);
@@ -750,18 +750,18 @@ protected function doRenderException(\Exception $e, OutputInterface $output)
             if (\defined('HHVM_VERSION') && $width > 1 << 31) {
                 $width = 1 << 31;
             }
-            $lines = array();
-            foreach ('' !== $message ? preg_split('/\r?\n/', $message) : array() as $line) {
+            $lines = [];
+            foreach ('' !== $message ? preg_split('/\r?\n/', $message) : [] as $line) {
                 foreach ($this->splitStringByWidth($line, $width - 4) as $line) {
                     // pre-format lines to get the right string length
                     $lineLength = Helper::strlen($line) + 4;
-                    $lines[] = array($line, $lineLength);
+                    $lines[] = [$line, $lineLength];
 
                     $len = max($lineLength, $len);
                 }
             }
 
-            $messages = array();
+            $messages = [];
             if (!$e instanceof ExceptionInterface || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                 $messages[] = sprintf('<comment>%s</comment>', OutputFormatter::escape(sprintf('In %s line %s:', basename($e->getFile()) ?: 'n/a', $e->getLine() ?: 'n/a')));
             }
@@ -783,12 +783,12 @@ protected function doRenderException(\Exception $e, OutputInterface $output)
                 // exception related properties
                 $trace = $e->getTrace();
 
-                array_unshift($trace, array(
+                array_unshift($trace, [
                     'function' => '',
                     'file' => $e->getFile() ?: 'n/a',
                     'line' => $e->getLine() ?: 'n/a',
-                    'args' => array(),
-                ));
+                    'args' => [],
+                ]);
 
                 for ($i = 0, $count = \count($trace); $i < $count; ++$i) {
                     $class = isset($trace[$i]['class']) ? $trace[$i]['class'] : '';
@@ -844,7 +844,7 @@ public function getTerminalDimensions()
     {
         @trigger_error(sprintf('The "%s()" method is deprecated as of 3.2 and will be removed in 4.0. Create a Terminal instance instead.', __METHOD__), E_USER_DEPRECATED);
 
-        return array($this->terminal->getWidth(), $this->terminal->getHeight());
10000

+        return [$this->terminal->getWidth(), $this->terminal->getHeight()];
     }
 
     /**
@@ -874,13 +874,13 @@ public function setTerminalDimensions($width, $height)
      */
     protected function configureIO(InputInterface $input, OutputInterface $output)
     {
-        if (true === $input->hasParameterOption(array('--ansi'), true)) {
+        if (true === $input->hasParameterOption(['--ansi'], true)) {
             $output->setDecorated(true);
-        } elseif (true === $input->hasParameterOption(array('--no-ansi'), true)) {
+        } elseif (true === $input->hasParameterOption(['--no-ansi'], true)) {
             $output->setDecorated(false);
         }
 
-        if (true === $input->hasParameterOption(array('--no-interaction', '-n'), true)) {
+        if (true === $input->hasParameterOption(['--no-interaction', '-n'], true)) {
             $input->setInteractive(false);
         } elseif (\function_exists('posix_isatty')) {
             $inputStream = null;
@@ -908,7 +908,7 @@ protected function configureIO(InputInterface $input, OutputInterface $output)
             default: $shellVerbosity = 0; break;
         }
 
-        if (true === $input->hasParameterOption(array('--quiet', '-q'), true)) {
+        if (true === $input->hasParameterOption(['--quiet', '-q'], true)) {
             $output->setVerbosity(OutputInterface::VERBOSITY_QUIET);
             $shellVerbosity = -1;
         } else {
@@ -1021,7 +1021,7 @@ protected function getCommandName(InputInterface $input)
      */
     protected function getDefaultInputDefinition()
     {
-        return new InputDefinition(array(
+        return new InputDefinition([
             new InputArgument('command', InputArgument::REQUIRED, 'The command to execute'),
 
             new InputOption('--help', '-h', InputOption::VALUE_NONE, 'Display this help message'),
@@ -1031,7 +1031,7 @@ protected function getDefaultInputDefinition()
             new InputOption('--ansi', '', InputOption::VALUE_NONE, 'Force ANSI output'),
             new InputOption('--no-ansi', '', InputOption::VALUE_NONE, 'Disable ANSI output'),
             new InputOption('--no-interaction', '-n', InputOption::VALUE_NONE, 'Do not ask any interactive question'),
-        ));
+        ]);
     }
 
     /**
@@ -1041,7 +1041,7 @@ protected function getDefaultInputDefinition()
      */
     protected function getDefaultCommands()
     {
-        return array(new HelpCommand(), new ListCommand());
+        return [new HelpCommand(), new ListCommand()];
     }
 
     /**
@@ -1051,12 +1051,12 @@ protected function getDefaultCommands()
      */
     protected function getDefaultHelperSet()
     {
-        return new HelperSet(array(
+        return new HelperSet([
             new FormatterHelper(),
             new DebugFormatterHelper(),
             new ProcessHelper(),
             new QuestionHelper(),
-        ));
+        ]);
     }
 
     /**
@@ -1101,9 +1101,9 @@ public function extractNamespace($name, $limit = null)
     private function findAlternatives($name, $collection)
     {
         $threshold = 1e3;
-        $alternatives = array();
+        $alternatives = [];
 
-        $collectionParts = array();
+        $collectionParts = [];
         foreach ($collection as $item) {
             $collectionParts[$item] = explode(':', $item);
         }
@@ -1180,7 +1180,7 @@ private function splitStringByWidth($string, $width)
         }
 
         $utf8String = mb_convert_encoding($string, 'utf8', $encoding);
-        $lines = array();
+        $lines = [];
         $line = '';
         foreach (preg_split('//u', $utf8String) as $char) {
             // test if $char could be appended to current line
@@ -1211,7 +1211,7 @@ private function extractAllNamespaces($name)
     {
         // -1 as third argument is needed to skip the command short name when exploding
         $parts = explode(':', $name, -1);
-        $namespaces = array();
+        $namespaces = [];
 
         foreach ($parts as $part) {
             if (\count($namespaces)) {
diff --git a/src/Symfony/Component/Console/Command/Command.php b/src/Symfony/Component/Console/Command/Command.php
index 3b4ba36ea56a..5f30da7a2a5a 100644
--- a/src/Symfony/Component/Console/Command/Command.php
+++ b/src/Symfony/Component/Console/Command/Command.php
@@ -37,7 +37,7 @@ class Command
     private $application;
     private $name;
     private $processTitle;
-    private $aliases = array();
+    private $aliases = [];
     private $definition;
     private $hidden = false;
     private $help;
@@ -46,8 +46,8 @@ class Command
     private $applicationDefinitionMerged = false;
     private $applicationDefinitionMergedWithArgs = false;
     private $code;
-    private $synopsis = array();
-    private $usages = array();
+    private $synopsis = [];
+    private $usages = [];
     private $helperSet;
 
     /**
@@ -535,14 +535,14 @@ public function getProcessedHelp()
         $name = $this->name;
         $isSingleCommand = $this->application && $this->application->isSingleCommand();
 
-        $placeholders = array(
+        $placeholders = [
             '%command.name%',
             '%command.full_name%',
-        );
-        $replacements = array(
+        ];
+        $replacements = [
             $name,
             $isSingleCommand ? $_SERVER['PHP_SELF'] : $_SERVER['PHP_SELF'].' '.$name,
-        );
+        ];
 
         return str_replace($placeholders, $replacements, $this->getHelp() ?: $this->getDescription());
     }
diff --git a/src/Symfony/Component/Console/Command/HelpCommand.php b/src/Symfony/Component/Console/Command/HelpCommand.php
index 1e20b008aab0..23847766b6fd 100644
--- a/src/Symfony/Component/Console/Command/HelpCommand.php
+++ b/src/Symfony/Component/Console/Command/HelpCommand.php
@@ -35,11 +35,11 @@ protected function configure()
 
         $this
             ->setName('help')
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name', 'help'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
                 new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw command help'),
-            ))
+            ])
             ->setDescription('Displays help for a command')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays help for a given command:
@@ -71,10 +71,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
         }
 
         $helper = new DescriptorHelper();
-        $helper->describe($output, $this->command, array(
+        $helper->describe($output, $this->command, [
             'format' => $input->getOption('format'),
             'raw_text' => $input->getOption('raw'),
-        ));
+        ]);
 
         $this->command = null;
     }
diff --git a/src/Symfony/Component/Console/Command/ListCommand.php b/src/Symfony/Component/Console/Command/ListCommand.php
index 5d932338c6ed..7259b1263bcd 100644
--- a/src/Symfony/Component/Console/Command/ListCommand.php
+++ b/src/Symfony/Component/Console/Command/ListCommand.php
@@ -69,11 +69,11 @@ public function getNativeDefinition()
     protected function execute(InputInterface $input, OutputInterface $output)
     {
         $helper = new DescriptorHelper();
-        $helper->describe($output, $this->getApplication(), array(
+        $helper->describe($output, $this->getApplication(), [
             'format' => $input->getOption('format'),
             'raw_text' => $input->getOption('raw'),
             'namespace' => $input->getArgument('namespace'),
-        ));
+        ]);
     }
 
     /**
@@ -81,10 +81,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
      */
     private function createDefinition()
     {
-        return new InputDefinition(array(
+        return new InputDefinition([
             new InputArgument('namespace', InputArgument::OPTIONAL, 'The namespace name'),
             new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw command list'),
             new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Console/DependencyInjection/AddConsoleCommandPass.php b/src/Symfony/Component/Console/DependencyInjection/AddConsoleCommandPass.php
index 39d53ef8e37d..f656d6a86915 100644
--- a/src/Symfony/Component/Console/DependencyInjection/AddConsoleCommandPass.php
+++ b/src/Symfony/Component/Console/DependencyInjection/AddConsoleCommandPass.php
@@ -38,10 +38,10 @@ public function __construct($commandLoaderServiceId = 'console.command_loader',
     public function process(ContainerBuilder $container)
     {
         $commandServices = $container->findTaggedServiceIds($this->commandTag, true);
-        $lazyCommandMap = array();
-        $lazyCommandRefs = array();
-        $serviceIds = array();
-        $lazyServiceIds = array();
+        $lazyCommandMap = [];
+        $lazyCommandRefs = [];
+        $serviceIds = [];
+        $lazyServiceIds = [];
 
         foreach ($commandServices as $id => $tags) {
             $definition = $container->getDefinition($id);
@@ -79,7 +79,7 @@ public function process(ContainerBuilder $container)
             unset($tags[0]);
             $lazyCommandMap[$commandName] = $id;
             $lazyCommandRefs[$id] = new TypedReference($id, $class);
-            $aliases = array();
+            $aliases = [];
 
             foreach ($tags as $tag) {
                 if (isset($tag['command'])) {
@@ -88,17 +88,17 @@ public function process(ContainerBuilder $container)
                 }
             }
 
-            $definition->addMethodCall('setName', array($commandName));
+            $definition->addMethodCall('setName', [$commandName]);
 
             if ($aliases) {
-                $definition->addMethodCall('setAliases', array($aliases));
+                $definition->addMethodCall('setAliases', [$aliases]);
             }
         }
 
         $container
             ->register($this->commandLoaderServiceId, ContainerCommandLoader::class)
             ->setPublic(true)
-            ->setArguments(array(ServiceLocatorTagPass::register($container, $lazyCommandRefs), $lazyCommandMap));
+            ->setArguments([ServiceLocatorTagPass::register($container, $lazyCommandRefs), $lazyCommandMap]);
 
         $container->setParameter('console.command.ids', $serviceIds);
         $container->setParameter('console.lazy_command.ids', $lazyServiceIds);
diff --git a/src/Symfony/Component/Console/Descriptor/ApplicationDescription.php b/src/Symfony/Component/Console/Descriptor/ApplicationDescription.php
index ef4c673b7bcf..79a358fb32ee 100644
--- a/src/Symfony/Component/Console/Descriptor/ApplicationDescription.php
+++ b/src/Symfony/Component/Console/Descriptor/ApplicationDescription.php
@@ -97,12 +97,12 @@ public function getCommand($name)
 
     private function inspectApplication()
     {
-        $this->commands = array();
-        $this->namespaces = array();
+        $this->commands = [];
+        $this->namespaces = [];
 
         $all = $this->application->all($this->namespace ? $this->application->findNamespace($this->namespace) : null);
         foreach ($this->sortCommands($all) as $namespace => $commands) {
-            $names = array();
+            $names = [];
 
             /** @var Command $command */
             foreach ($commands as $name => $command) {
@@ -119,7 +119,7 @@ private function inspectApplication()
                 $names[] = $name;
             }
 
-            $this->namespaces[$namespace] = array('id' => $namespace, 'commands' => $names);
+            $this->namespaces[$namespace] = ['id' => $namespace, 'commands' => $names];
         }
     }
 
@@ -128,8 +128,8 @@ private function inspectApplication()
      */
     private function sortCommands(array $commands)
     {
-        $namespacedCommands = array();
-        $globalCommands = array();
+        $namespacedCommands = [];
+        $globalCommands = [];
         foreach ($commands as $name => $command) {
             $key = $this->application->extractNamespace($name, 1);
             if (!$key) {
diff --git a/src/Symfony/Component/Console/Descriptor/Descriptor.php b/src/Symfony/Component/Console/Descriptor/Descriptor.php
index 151d84f72abf..d25a708e479e 100644
--- a/src/Symfony/Component/Console/Descriptor/Descriptor.php
+++ b/src/Symfony/Component/Console/Descriptor/Descriptor.php
@@ -34,7 +34,7 @@ abstract class Descriptor implements DescriptorInterface
     /**
      * {@inheritdoc}
      */
-    public function describe(OutputInterface $output, $object, array $options = array())
+    public function describe(OutputInterface $output, $object, array $options = [])
     {
         $this->output = $output;
 
@@ -75,33 +75,33 @@ protected function write($content, $decorated = false)
      *
      * @return string|mixed
      */
-    abstract protected function describeInputArgument(InputArgument $argument, array $options = array());
+    abstract protected function describeInputArgument(InputArgument $argument, array $options = []);
 
     /**
      * Describes an InputOption instance.
      *
      * @return string|mixed
      */
-    abstract protected function describeInputOption(InputOption $option, array $options = array());
+    abstract protected function describeInputOption(InputOption $option, array $options = []);
 
     /**
      * Describes an InputDefinition instance.
      *
      * @return string|mixed
      */
-    abstract protected function describeInputDefinition(InputDefinition $definition, array $options = array());
+    abstract protected function describeInputDefinition(InputDefinition $definition, array $options = []);
 
     /**
      * Describes a Command instance.
      *
      * @return string|mixed
      */
-    abstract protected function describeCommand(Command $command, array $options = array());
+    abstract protected function describeCommand(Command $command, array $options = []);
 
     /**
      * Describes an Application instance.
      *
      * @return string|mixed
      */
-    abstract protected function describeApplication(Application $application, array $options = array());
+    abstract protected function describeApplication(Application $application, array $options = []);
 }
diff --git a/src/Symfony/Component/Console/Descriptor/DescriptorInterface.php b/src/Symfony/Component/Console/Descriptor/DescriptorInterface.php
index 5d3339a9e608..fbc07df879ab 100644
--- a/src/Symfony/Component/Console/Descriptor/DescriptorInterface.php
+++ b/src/Symfony/Component/Console/Descriptor/DescriptorInterface.php
@@ -27,5 +27,5 @@ interface DescriptorInterface
      * @param object          $object
      * @param array           $options
      */
-    public function describe(OutputInterface $output, $object, array $options = array());
+    public function describe(OutputInterface $output, $object, array $options = []);
 }
diff --git a/src/Symfony/Component/Console/Descriptor/JsonDescriptor.php b/src/Symfony/Component/Console/Descriptor/JsonDescriptor.php
index f60323becd88..197b843d4b76 100644
--- a/src/Symfony/Component/Console/Descriptor/JsonDescriptor.php
+++ b/src/Symfony/Component/Console/Descriptor/JsonDescriptor.php
@@ -29,7 +29,7 @@ class JsonDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeInputArgument(InputArgument $argument, array $options = array())
+    protected function describeInputArgument(InputArgument $argument, array $options = [])
     {
         $this->writeData($this->getInputArgumentData($argument), $options);
     }
@@ -37,7 +37,7 @@ protected function describeInputArgument(InputArgument $argument, array $options
     /**
      * {@inheritdoc}
      */
-    protected function describeInputOption(InputOption $option, array $options = array())
+    protected function describeInputOption(InputOption $option, array $options = [])
     {
         $this->writeData($this->getInputOptionData($option), $options);
     }
@@ -45,7 +45,7 @@ protected function describeInputOption(InputOption $option, array $options = arr
     /**
      * {@inheritdoc}
      */
-    protected function describeInputDefinition(InputDefinition $definition, array $options = array())
+    protected function describeInputDefinition(InputDefinition $definition, array $options = [])
     {
         $this->writeData($this->getInputDefinitionData($definition), $options);
     }
@@ -53,7 +53,7 @@ protected function describeInputDefinition(InputDefinition $definition, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeCommand(Command $command, array $options = array())
+    protected function describeCommand(Command $command, array $options = [])
     {
         $this->writeData($this->getCommandData($command), $options);
     }
@@ -61,17 +61,17 @@ protected function describeCommand(Command $command, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeApplication(Application $application, array $options = array())
+    protected function describeApplication(Application $application, array $options = [])
     {
         $describedNamespace = isset($options['namespace']) ? $options['namespace'] : null;
         $description = new ApplicationDescription($application, $describedNamespace, true);
-        $commands = array();
+        $commands = [];
 
         foreach ($description->getCommands() as $command) {
             $commands[] = $this->getCommandData($command);
         }
 
-        $data = array();
+        $data = [];
         if ('UNKNOWN' !== $application->getName()) {
             $data['application']['name'] = $application->getName();
             if ('UNKNOWN' !== $application->getVersion()) {
@@ -105,13 +105,13 @@ private function writeData(array $data, array $options)
      */
     private function getInputArgumentData(InputArgument $argument)
     {
-        return array(
+        return [
             'name' => $argument->getName(),
             'is_required' => $argument->isRequired(),
             'is_array' => $argument->isArray(),
             'description' => preg_replace('/\s*[\r\n]\s*/', ' ', $argument->getDescription()),
             'default' => INF === $argument->getDefault() ? 'INF' : $argument->getDefault(),
-        );
+        ];
     }
 
     /**
@@ -119,7 +119,7 @@ private function getInputArgumentData(InputArgument $argument)
      */
     private function getInputOptionData(InputOption $option)
     {
-        return array(
+        return [
             'name' => '--'.$option->getName(),
             'shortcut' => $option->getShortcut() ? '-'.str_replace('|', '|-', $option->getShortcut()) : '',
             'accept_value' => $option->acceptValue(),
@@ -127,7 +127,7 @@ private function getInputOptionData(InputOption $option)
             'is_multiple' => $option->isArray(),
             'description' => preg_replace('/\s*[\r\n]\s*/', ' ', $option->getDescription()),
             'default' => INF === $option->getDefault() ? 'INF' : $option->getDefault(),
-        );
+        ];
     }
 
     /**
@@ -135,17 +135,17 @@ private function getInputOptionData(InputOption $option)
      */
     private function getInputDefinitionData(InputDefinition $definition)
     {
-        $inputArguments = array();
+        $inputArguments = [];
         foreach ($definition->getArguments() as $name => $argument) {
             $inputArguments[$name] = $this->getInputArgumentData($argument);
         }
 
-        $inputOptions = array();
+        $inputOptions = [];
         foreach ($definition->getOptions() as $name => $option) {
             $inputOptions[$name] = $this->getInputOptionData($option);
         }
 
-        return array('arguments' => $inputArguments, 'options' => $inputOptions);
+        return ['arguments' => $inputArguments, 'options' => $inputOptions];
     }
 
     /**
@@ -156,13 +156,13 @@ private function getCommandData(Command $command)
         $command->getSynopsis();
         $command->mergeApplicationDefinition(false);
 
-        return array(
+        return [
             'name' => $command->getName(),
-            'usage' => array_merge(array($command->getSynopsis()), $command->getUsages(), $command->getAliases()),
+            'usage' => array_merge([$command->getSynopsis()], $command->getUsages(), $command->getAliases()),
             'description' => $command->getDescription(),
             'help' => $command->getProcessedHelp(),
             'definition' => $this->getInputDefinitionData($command->getNativeDefinition()),
             'hidden' => $command->isHidden(),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Console/Descriptor/MarkdownDescriptor.php b/src/Symfony/Component/Console/Descriptor/MarkdownDescriptor.php
index 6d8399f92213..e6245778f58d 100644
--- a/src/Symfony/Component/Console/Descriptor/MarkdownDescriptor.php
+++ b/src/Symfony/Component/Console/Descriptor/MarkdownDescriptor.php
@@ -31,7 +31,7 @@ class MarkdownDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    public function describe(OutputInterface $output, $object, array $options = array())
+    public function describe(OutputInterface $output, $object, array $options = [])
     {
         $decorated = $output->isDecorated();
         $output->setDecorated(false);
@@ -52,7 +52,7 @@ protected function write($content, $decorated = true)
     /**
      * {@inheritdoc}
      */
-    protected function describeInputArgument(InputArgument $argument, array $options = array())
+    protected function describeInputArgument(InputArgument $argument, array $options = [])
     {
         $this->write(
             '#### `'.($argument->getName() ?: '<none>')."`\n\n"
@@ -66,7 +66,7 @@ protected function describeInputArgument(InputArgument $argument, array $options
     /**
      * {@inheritdoc}
      */
-    protected function describeInputOption(InputOption $option, array $options = array())
+    protected function describeInputOption(InputOption $option, array $options = [])
     {
         $name = '--'.$option->getName();
         if ($option->getShortcut()) {
@@ -86,7 +86,7 @@ protected function describeInputOption(InputOption $option, array $options = arr
     /**
      * {@inheritdoc}
      */
-    protected function describeInputDefinition(InputDefinition $definition, array $options = array())
+    protected function describeInputDefinition(InputDefinition $definition, array $options = [])
     {
         if ($showArguments = \count($definition->getArguments()) > 0) {
             $this->write('### Arguments');
@@ -112,7 +112,7 @@ protected function describeInputDefinition(InputDefinition $definition, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeCommand(Command $command, array $options = array())
+    protected function describeCommand(Command $command, array $options = [])
     {
         $command->getSynopsis();
         $command->mergeApplicationDefinition(false);
@@ -122,7 +122,7 @@ protected function describeCommand(Command $command, array $options = array())
             .str_repeat('-', Helper::strlen($command->getName()) + 2)."\n\n"
             .($command->getDescription() ? $command->getDescription()."\n\n" : '')
             .'### Usage'."\n\n"
-            .array_reduce(array_merge(array($command->getSynopsis()), $command->getAliases(), $command->getUsages()), function ($carry, $usage) {
+            .array_reduce(array_merge([$command->getSynopsis()], $command->getAliases(), $command->getUsages()), function ($carry, $usage) {
                 return $carry.'* `'.$usage.'`'."\n";
             })
         );
@@ -141,7 +141,7 @@ protected function describeCommand(Command $command, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeApplication(Application $application, array $options = array())
+    protected function describeApplication(Application $application, array $options = [])
     {
         $describedNamespace = isset($options['namespace']) ? $options['namespace'] : null;
         $description = new ApplicationDescription($application, $describedNamespace);
diff --git a/src/Symfony/Component/Console/Descriptor/TextDescriptor.php b/src/Symfony/Component/Console/Descriptor/TextDescriptor.php
index 04dd22598d6e..af9088c7c335 100644
--- a/src/Symfony/Component/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Component/Console/Descriptor/TextDescriptor.php
@@ -31,7 +31,7 @@ class TextDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeInputArgument(InputArgument $argument, array $options = array())
+    protected function describeInputArgument(InputArgument $argument, array $options = [])
     {
         if (null !== $argument->getDefault() && (!\is_array($argument->getDefault()) || \count($argument->getDefault()))) {
             $default = sprintf('<comment> [default: %s]</comment>', $this->formatDefaultValue($argument->getDefault()));
@@ -54,7 +54,7 @@ protected function describeInputArgument(InputArgument $argument, array $options
     /**
      * {@inheritdoc}
      */
-    protected function describeInputOption(InputOption $option, array $options = array())
+    protected function describeInputOption(InputOption $option, array $options = [])
     {
         if ($option->acceptValue() && null !== $option->getDefault() && (!\is_array($option->getDefault()) || \count($option->getDefault()))) {
             $default = sprintf('<comment> [default: %s]</comment>', $this->formatDefaultValue($option->getDefault()));
@@ -71,7 +71,7 @@ protected function describeInputOption(InputOption $option, array $options = arr
             }
         }
 
-        $totalWidth = isset($options['total_width']) ? $options['total_width'] : $this->calculateTotalWidthForOptions(array($option));
+        $totalWidth = isset($options['total_width']) ? $options['total_width'] : $this->calculateTotalWidthForOptions([$option]);
         $synopsis = sprintf('%s%s',
             $option->getShortcut() ? sprintf('-%s, ', $option->getShortcut()) : '    ',
             sprintf('--%s%s', $option->getName(), $value)
@@ -92,7 +92,7 @@ protected function describeInputOption(InputOption $option, array $options = arr
     /**
      * {@inheritdoc}
      */
-    protected function describeInputDefinition(InputDefinition $definition, array $options = array())
+    protected function describeInputDefinition(InputDefinition $definition, array $options = [])
     {
         $totalWidth = $this->calculateTotalWidthForOptions($definition->getOptions());
         foreach ($definition->getArguments() as $argument) {
@@ -103,7 +103,7 @@ protected function describeInputDefinition(InputDefinition $definition, array $o
             $this->writeText('<comment>Arguments:</comment>', $options);
             $this->writeText("\n");
             foreach ($definition->getArguments() as $argument) {
-                $this->describeInputArgument($argument, array_merge($options, array('total_width' => $totalWidth)));
+                $this->describeInputArgument($argument, array_merge($options, ['total_width' => $totalWidth]));
                 $this->writeText("\n");
             }
         }
@@ -113,7 +113,7 @@ protected function describeInputDefinition(InputDefinition $definition, array $o
         }
 
         if ($definition->getOptions()) {
-            $laterOptions = array();
+            $laterOptions = [];
 
             $this->writeText('<comment>Options:</comment>', $options);
             foreach ($definition->getOptions() as $option) {
@@ -122,11 +122,11 @@ protected function describeInputDefinition(InputDefinition $definition, array $o
                     continue;
                 }
                 $this->writeText("\n");
-                $this->describeInputOption($option, array_merge($options, array('total_width' => $totalWidth)));
+                $this->describeInputOption($option, array_merge($options, ['total_width' => $totalWidth]));
             }
             foreach ($laterOptions as $option) {
                 $this->writeText("\n");
-                $this->describeInputOption($option, array_merge($options, array('total_width' => $totalWidth)));
+                $this->describeInputOption($option, array_merge($options, ['total_width' => $totalWidth]));
             }
         }
     }
@@ -134,14 +134,14 @@ protected function describeInputDefinition(InputDefinition $definition, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeCommand(Command $command, array $options = array())
+    protected function describeCommand(Command $command, array $options = [])
     {
         $command->getSynopsis(true);
         $command->getSynopsis(false);
         $command->mergeApplicationDefinition(false);
 
         $this->writeText('<comment>Usage:</comment>', $options);
-        foreach (array_merge(array($command->getSynopsis(true)), $command->getAliases(), $command->getUsages()) as $usage) {
+        foreach (array_merge([$command->getSynopsis(true)], $command->getAliases(), $command->getUsages()) as $usage) {
             $this->writeText("\n");
             $this->writeText('  '.OutputFormatter::escape($usage), $options);
         }
@@ -166,7 +166,7 @@ protected function describeCommand(Command $command, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeApplication(Application $application, array $options = array())
+    protected function describeApplication(Application $application, array $options = [])
     {
         $describedNamespace = isset($options['namespace']) ? $options['namespace'] : null;
         $description = new ApplicationDescription($application, $describedNamespace);
@@ -242,7 +242,7 @@ protected function describeApplication(Application $application, array $options
     /**
      * {@inheritdoc}
      */
-    private function writeText($content, array $options = array())
+    private function writeText($content, array $options = [])
     {
         $this->write(
             isset($options['raw_text']) && $options['raw_text'] ? strip_tags($content) : $content,
@@ -300,7 +300,7 @@ private function formatDefaultValue($default)
      */
     private function getColumnWidth(array $commands)
     {
-        $widths = array();
+        $widths = [];
 
         foreach ($commands as $command) {
             if ($command instanceof Command) {
diff --git a/src/Symfony/Component/Console/Descriptor/XmlDescriptor.php b/src/Symfony/Component/Console/Descriptor/XmlDescriptor.php
index 1a12a1dd67b4..0cc0c9901f19 100644
--- a/src/Symfony/Component/Console/Descriptor/XmlDescriptor.php
+++ b/src/Symfony/Component/Console/Descriptor/XmlDescriptor.php
@@ -64,7 +64,7 @@ public function getCommandDocument(Command $command)
 
         $commandXML->appendChild($usagesXML = $dom->createElement('usages'));
 
-        foreach (array_merge(array($command->getSynopsis()), $command->getAliases(), $command->getUsages()) as $usage) {
+        foreach (array_merge([$command->getSynopsis()], $command->getAliases(), $command->getUsages()) as $usage) {
             $usagesXML->appendChild($dom->createElement('usage', $usage));
         }
 
@@ -130,7 +130,7 @@ public function getApplicationDocument(Application $application, $namespace = nu
     /**
      * {@inheritdoc}
      */
-    protected function describeInputArgument(InputArgument $argument, array $options = array())
+    protected function describeInputArgument(InputArgument $argument, array $options = [])
     {
         $this->writeDocument($this->getInputArgumentDocument($argument));
     }
@@ -138,7 +138,7 @@ protected function describeInputArgument(InputArgument $argument, array $options
     /**
      * {@inheritdoc}
      */
-    protected function describeInputOption(InputOption $option, array $options = array())
+    protected function describeInputOption(InputOption $option, array $options = [])
     {
         $this->writeDocument($this->getInputOptionDocument($option));
     }
@@ -146,7 +146,7 @@ protected function describeInputOption(InputOption $option, array $options = arr
     /**
      * {@inheritdoc}
      */
-    protected function describeInputDefinition(InputDefinition $definition, array $options = array())
+    protected function describeInputDefinition(InputDefinition $definition, array $options = [])
     {
         $this->writeDocument($this->getInputDefinitionDocument($definition));
     }
@@ -154,7 +154,7 @@ protected function describeInputDefinition(InputDefinition $definition, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeCommand(Command $command, array $options = array())
+    protected function describeCommand(Command $command, array $options = [])
     {
         $this->writeDocument($this->getCommandDocument($command));
     }
@@ -162,7 +162,7 @@ protected function describeCommand(Command $command, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeApplication(Application $application, array $options = array())
+    protected function describeApplication(Application $application, array $options = [])
     {
         $this->writeDocument($this->getApplicationDocument($application, isset($options['namespace']) ? $options['namespace'] : null));
     }
@@ -203,7 +203,7 @@ private function getInputArgumentDocument(InputArgument $argument)
         $descriptionXML->appendChild($dom->createTextNode($argument->getDescription()));
 
         $objectXML->appendChild($defaultsXML = $dom->createElement('defaults'));
-        $defaults = \is_array($argument->getDefault()) ? $argument->getDefault() : (\is_bool($argument->getDefault()) ? array(var_export($argument->getDefault(), true)) : ($argument->getDefault() ? array($argument->getDefault()) : array()));
+        $defaults = \is_array($argument->getDefault()) ? $argument->getDefault() : (\is_bool($argument->getDefault()) ? [var_export($argument->getDefault(), true)] : ($argument->getDefault() ? [$argument->getDefault()] : []));
         foreach ($defaults as $default) {
             $defaultsXML->appendChild($defaultXML = $dom->createElement('default'));
             $defaultXML->appendChild($dom->createTextNode($default));
@@ -235,7 +235,7 @@ private function getInputOptionDocument(InputOption $option)
         $descriptionXML->appendChild($dom->createTextNode($option->getDescription()));
 
         if ($option->acceptValue()) {
-            $defaults = \is_array($option->getDefault()) ? $option->getDefault() : (\is_bool($option->getDefault()) ? array(var_export($option->getDefault(), true)) : ($option->getDefault() ? array($option->getDefault()) : array()));
+            $defaults = \is_array($option->getDefault()) ? $option->getDefault() : (\is_bool($option->getDefault()) ? [var_export($option->getDefault(), true)] : ($option->getDefault() ? [$option->getDefault()] : []));
             $objectXML->appendChild($defaultsXML = $dom->createElement('defaults'));
 
             if (!empty($defaults)) {
diff --git a/src/Symfony/Component/Console/EventListener/ErrorListener.php b/src/Symfony/Component/Console/EventListener/ErrorListener.php
index 909d6ea3a1dd..212ad1d96ff4 100644
--- a/src/Symfony/Component/Console/EventListener/ErrorListener.php
+++ b/src/Symfony/Component/Console/EventListener/ErrorListener.php
@@ -40,10 +40,10 @@ public function onConsoleError(ConsoleErrorEvent $event)
         $error = $event->getError();
 
         if (!$inputString = $this->getInputString($event)) {
-            return $this->logger->error('An error occurred while using the console. Message: "{message}"', array('exception' => $error, 'message' => $error->getMessage()));
+            return $this->logger->error('An error occurred while using the console. Message: "{message}"', ['exception' => $error, 'message' => $error->getMessage()]);
         }
 
-        $this->logger->error('Error thrown while running command "{command}". Message: "{message}"', array('exception' => $error, 'command' => $inputString, 'message' => $error->getMessage()));
+        $this->logger->error('Error thrown while running command "{command}". Message: "{message}"', ['exception' => $error, 'command' => $inputString, 'message' => $error->getMessage()]);
     }
 
     public function onConsoleTerminate(ConsoleTerminateEvent $event)
@@ -59,18 +59,18 @@ public function onConsoleTerminate(ConsoleTerminateEvent $event)
         }
 
         if (!$inputString = $this->getInputString($event)) {
-            return $this->logger->debug('The console exited with code "{code}"', array('code' => $exitCode));
+            return $this->logger->debug('The console exited with code "{code}"', ['code' => $exitCode]);
         }
 
-        $this->logger->debug('Command "{command}" exited with code "{code}"', array('command' => $inputString, 'code' => $exitCode));
+        $this->logger->debug('Command "{command}" exited with code "{code}"', ['command' => $inputString, 'code' => $exitCode]);
     }
 
     public static function getSubscribedEvents()
     {
-        return array(
-            ConsoleEvents::ERROR => array('onConsoleError', -128),
-            ConsoleEvents::TERMINATE => array('onConsoleTerminate', -128),
-        );
+        return [
+            ConsoleEvents::ERROR => ['onConsoleError', -128],
+            ConsoleEvents::TERMINATE => ['onConsoleTerminate', -128],
+        ];
     }
 
     private static function getInputString(ConsoleEvent $event)
@@ -80,7 +80,7 @@ private static function getInputString(ConsoleEvent $event)
 
         if (method_exists($input, '__toString')) {
             if ($commandName) {
-                return str_replace(array("'$commandName'", "\"$commandName\""), $commandName, (string) $input);
+                return str_replace(["'$commandName'", "\"$commandName\""], $commandName, (string) $input);
             }
 
             return (string) $input;
diff --git a/src/Symfony/Component/Console/Exception/CommandNotFoundException.php b/src/Symfony/Component/Console/Exception/CommandNotFoundException.php
index cb7d1131fa77..d28fceb12948 100644
--- a/src/Symfony/Component/Console/Exception/CommandNotFoundException.php
+++ b/src/Symfony/Component/Console/Exception/CommandNotFoundException.php
@@ -26,7 +26,7 @@ class CommandNotFoundException extends \InvalidArgumentException implements Exce
      * @param int        $code         Exception code
      * @param \Exception $previous     Previous exception used for the exception chaining
      */
-    public function __construct($message, array $alternatives = array(), $code = 0, \Exception $previous = null)
+    public function __construct($message, array $alternatives = [], $code = 0, \Exception $previous = null)
     {
         parent::__construct($message, $code, $previous);
 
diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatter.php b/src/Symfony/Component/Console/Formatter/OutputFormatter.php
index b9af0b3ccaaf..adfcdc875006 100644
--- a/src/Symfony/Component/Console/Formatter/OutputFormatter.php
+++ b/src/Symfony/Component/Console/Formatter/OutputFormatter.php
@@ -21,7 +21,7 @@
 class OutputFormatter implements OutputFormatterInterface
 {
     private $decorated;
-    private $styles = array();
+    private $styles = [];
     private $styleStack;
 
     /**
@@ -65,7 +65,7 @@ public static function escapeTrailingBackslash($text)
      * @param bool                            $decorated Whether this formatter should actually decorate strings
      * @param OutputFormatterStyleInterface[] $styles    Array of "name => FormatterStyle" instances
      */
-    public function __construct($decorated = false, array $styles = array())
+    public function __construct($decorated = false, array $styles = [])
     {
         $this->decorated = (bool) $decorated;
 
@@ -169,7 +169,7 @@ public function format($message)
         $output .= $this->applyCurrentStyle(substr($message, $offset));
 
         if (false !== strpos($output, "\0")) {
-            return strtr($output, array("\0" => '\\', '\\<' => '<'));
+            return strtr($output, ["\0" => '\\', '\\<' => '<']);
         }
 
         return str_replace('\\<', '<', $output);
diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php b/src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php
index b884d7134380..b27439a76135 100644
--- a/src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php
+++ b/src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php
@@ -20,39 +20,39 @@
  */
 class OutputFormatterStyle implements OutputFormatterStyleInterface
 {
-    private static $availableForegroundColors = array(
-        'black' => array('set' => 30, 'unset' => 39),
-        'red' => array('set' => 31, 'unset' => 39),
-        'green' => array('set' => 32, 'unset' => 39),
-        'yellow' => array('set' => 33, 'unset' => 39),
-        'blue' => array('set' => 34, 'unset' => 39),
-        'magenta' => array('set' => 35, 'unset' => 39),
-        'cyan' => array('set' => 36, 'unset' => 39),
-        'white' => array('set' => 37, 'unset' => 39),
-        'default' => array('set' => 39, 'unset' => 39),
-    );
-    private static $availableBackgroundColors = array(
-        'black' => array('set' => 40, 'unset' => 49),
-        'red' => array('set' => 41, 'unset' => 49),
-        'green' => array('set' => 42, 'unset' => 49),
-        'yellow' => array('set' => 43, 'unset' => 49),
-        'blue' => array('set' => 44, 'unset' => 49),
-        'magenta' => array('set' => 45, 'unset' => 49),
-        'cyan' => array('set' => 46, 'unset' => 49),
-        'white' => array('set' => 47, 'unset' => 49),
-        'default' => array('set' => 49, 'unset' => 49),
-    );
-    private static $availableOptions = array(
-        'bold' => array('set' => 1, 'unset' => 22),
-        'underscore' => array('set' => 4, 'unset' => 24),
-        'blink' => array('set' => 5, 'unset' => 25),
-        'reverse' => array('set' => 7, 'unset' => 27),
-        'conceal' => array('set' => 8, 'unset' => 28),
-    );
+    private static $availableForegroundColors = [
+        'black' => ['set' => 30, 'unset' => 39],
+        'red' => ['set' => 31, 'unset' => 39],
+        'green' => ['set' => 32, 'unset' => 39],
+        'yellow' => ['set' => 33, 'unset' => 39],
+        'blue' => ['set' => 34, 'unset' => 39],
+        'magenta' => ['set' => 35, 'unset' => 39],
+        'cyan' => ['set' => 36, 'unset' => 39],
+        'white' => ['set' => 37, 'unset' => 39],
+        'default' => ['set' => 39, 'unset' => 39],
+    ];
+    private static $availableBackgroundColors = [
+        'black' => ['set' => 40, 'unset' => 49],
+        'red' => ['set' => 41, 'unset' => 49],
+        'green' => ['set' => 42, 'unset' => 49],
+        'yellow' => ['set' => 43, 'unset' => 49],
+        'blue' => ['set' => 44, 'unset' => 49],
+        'magenta' => ['set' => 45, 'unset' => 49],
+        'cyan' => ['set' => 46, 'unset' => 49],
+        'white' => ['set' => 47, 'unset' => 49],
+        'default' => ['set' => 49, 'unset' => 49],
+    ];
+    private static $availableOptions = [
+        'bold' => ['set' => 1, 'unset' => 22],
+        'underscore' => ['set' => 4, 'unset' => 24],
+        'blink' => ['set' => 5, 'unset' => 25],
+        'reverse' => ['set' => 7, 'unset' => 27],
+        'conceal' => ['set' => 8, 'unset' => 28],
+    ];
 
     private $foreground;
     private $background;
-    private $options = array();
+    private $options = [];
 
     /**
      * Initializes output formatter style.
@@ -61,7 +61,7 @@ class OutputFormatterStyle implements OutputFormatterStyleInterface
      * @param string|null $background The style background color name
      * @param array       $options    The style options
      */
-    public function __construct($foreground = null, $background = null, array $options = array())
+    public function __construct($foreground = null, $background = null, array $options = [])
     {
         if (null !== $foreground) {
             $this->setForeground($foreground);
@@ -160,7 +160,7 @@ public function unsetOption($option)
      */
     public function setOptions(array $options)
     {
-        $this->options = array();
+        $this->options = [];
 
         foreach ($options as $option) {
             $this->setOption($option);
@@ -176,8 +176,8 @@ public function setOptions(array $options)
      */
     public function apply($text)
     {
-        $setCodes = array();
-        $unsetCodes = array();
+        $setCodes = [];
+        $unsetCodes = [];
 
         if (null !== $this->foreground) {
             $setCodes[] = $this->foreground['set'];
diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php b/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php
index 9e7283c2f84c..5066649912bc 100644
--- a/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php
+++ b/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php
@@ -36,7 +36,7 @@ public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
      */
     public function reset()
     {
-        $this->styles = array();
+        $this->styles = [];
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Helper/DebugFormatterHelper.php b/src/Symfony/Component/Console/Helper/DebugFormatterHelper.php
index f5393edee3d9..16d117553a1c 100644
--- a/src/Symfony/Component/Console/Helper/DebugFormatterHelper.php
+++ b/src/Symfony/Component/Console/Helper/DebugFormatterHelper.php
@@ -20,8 +20,8 @@
  */
 class DebugFormatterHelper extends Helper
 {
-    private $colors = array('black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white', 'default');
-    private $started = array();
+    private $colors = ['black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white', 'default'];
+    private $started = [];
     private $count = -1;
 
     /**
@@ -35,7 +35,7 @@ class DebugFormatterHelper extends Helper
      */
     public function start($id, $message, $prefix = 'RUN')
     {
-        $this->started[$id] = array('border' => ++$this->count % \count($this->colors));
+        $this->started[$id] = ['border' => ++$this->count % \count($this->colors)];
 
         return sprintf("%s<bg=blue;fg=white> %s </> <fg=blue>%s</>\n", $this->getBorder($id), $prefix, $message);
     }
diff --git a/src/Symfony/Component/Console/Helper/DescriptorHelper.php b/src/Symfony/Component/Console/Helper/DescriptorHelper.php
index 54d3b1afc1a4..f8a3847b49c6 100644
--- a/src/Symfony/Component/Console/Helper/DescriptorHelper.php
+++ b/src/Symfony/Component/Console/Helper/DescriptorHelper.php
@@ -29,7 +29,7 @@ class DescriptorHelper extends Helper
     /**
      * @var DescriptorInterface[]
      */
-    private $descriptors = array();
+    private $descriptors = [];
 
     public function __construct()
     {
@@ -54,12 +54,12 @@ public function __construct()
      *
      * @throws InvalidArgumentException when the given format is not supported
      */
-    public function describe(OutputInterface $output, $object, array $options = array())
+    public function describe(OutputInterface $output, $object, array $options = [])
     {
-        $options = array_merge(array(
+        $options = array_merge([
             'raw_text' => false,
             'format' => 'txt',
-        ), $options);
+        ], $options);
 
         if (!isset($this->descriptors[$options['format']])) {
             throw new InvalidArgumentException(sprintf('Unsupported format "%s".', $options['format']));
diff --git a/src/Symfony/Component/Console/Helper/FormatterHelper.php b/src/Symfony/Component/Console/Helper/FormatterHelper.php
index 79ab2849e51a..4ad63856dcd5 100644
--- a/src/Symfony/Component/Console/Helper/FormatterHelper.php
+++ b/src/Symfony/Component/Console/Helper/FormatterHelper.php
@@ -46,18 +46,18 @@ public function formatSection($section, $message, $style = 'info')
     public function formatBlock($messages, $style, $large = false)
     {
         if (!\is_array($messages)) {
-            $messages = array($messages);
+            $messages = [$messages];
         }
 
         $len = 0;
-        $lines = array();
+        $lines = [];
         foreach ($messages as $message) {
             $message = OutputFormatter::escape($message);
             $lines[] = sprintf($large ? '  %s  ' : ' %s ', $message);
             $len = max($this->strlen($message) + ($large ? 4 : 2), $len);
         }
 
-        $messages = $large ? array(str_repeat(' ', $len)) : array();
+        $messages = $large ? [str_repeat(' ', $len)] : [];
         for ($i = 0; isset($lines[$i]); ++$i) {
             $messages[] = $lines[$i].str_repeat(' ', $len - $this->strlen($lines[$i]));
         }
diff --git a/src/Symfony/Component/Console/Helper/Helper.php b/src/Symfony/Component/Console/Helper/Helper.php
index 509018552626..0ddddf6bc502 100644
--- a/src/Symfony/Component/Console/Helper/Helper.php
+++ b/src/Symfony/Component/Console/Helper/Helper.php
@@ -74,17 +74,17 @@ public static function substr($string, $from, $length = null)
 
     public static function formatTime($secs)
     {
-        static $timeFormats = array(
-            array(0, '< 1 sec'),
-            array(1, '1 sec'),
-            array(2, 'secs', 1),
-            array(60, '1 min'),
-            array(120, 'mins', 60),
-            array(3600, '1 hr'),
-            array(7200, 'hrs', 3600),
-            array(86400, '1 day'),
-            array(172800, 'days', 86400),
-        );
+        static $timeFormats = [
+            [0, '< 1 sec'],
+            [1, '1 sec'],
+            [2, 'secs', 1],
+            [60, '1 min'],
+            [120, 'mins', 60],
+            [3600, '1 hr'],
+            [7200, 'hrs', 3600],
+            [86400, '1 day'],
+            [172800, 'days', 86400],
+        ];
 
         foreach ($timeFormats as $index => $format) {
             if ($secs >= $format[0]) {
diff --git a/src/Symfony/Component/Console/Helper/HelperSet.php b/src/Symfony/Component/Console/Helper/HelperSet.php
index 4c44b05f562c..c73fecd4751e 100644
--- a/src/Symfony/Component/Console/Helper/HelperSet.php
+++ b/src/Symfony/Component/Console/Helper/HelperSet.php
@@ -24,13 +24,13 @@ class HelperSet implements \IteratorAggregate
     /**
      * @var Helper[]
      */
-    private $helpers = array();
+    private $helpers = [];
     private $command;
 
     /**
      * @param Helper[] $helpers An array of helper
      */
-    public function __construct(array $helpers = array())
+    public function __construct(array $helpers = [])
     {
         foreach ($helpers as $alias => $helper) {
             $this->set($helper, \is_int($alias) ? null : $alias);
diff --git a/src/Symfony/Component/Console/Helper/ProgressBar.php b/src/Symfony/Component/Console/Helper/ProgressBar.php
index bea03e31ba8a..a1c3cc5d217e 100644
--- a/src/Symfony/Component/Console/Helper/ProgressBar.php
+++ b/src/Symfony/Component/Console/Helper/ProgressBar.php
@@ -38,7 +38,7 @@ final class ProgressBar
     private $stepWidth;
     private $percent = 0.0;
     private $formatLineCount;
-    private $messages = array();
+    private $messages = [];
     private $overwrite = true;
     private $terminal;
     private $firstRun = true;
@@ -503,8 +503,8 @@ private function determineBestFormat()
 
     private static function initPlaceholderFormatters()
     {
-        return array(
-            'bar' => function (ProgressBar $bar, OutputInterface $output) {
+        return [
+            'bar' => function (self $bar, OutputInterface $output) {
                 $completeBars = floor($bar->getMaxSteps() > 0 ? $bar->getProgressPercent() * $bar->getBarWidth() : $bar->getProgress() % $bar->getBarWidth());
                 $display = str_repeat($bar->getBarCharacter(), $completeBars);
                 if ($completeBars < $bar->getBarWidth()) {
@@ -514,10 +514,10 @@ private static function initPlaceholderFormatters()
 
                 return $display;
             },
-            'elapsed' => function (ProgressBar $bar) {
+            'elapsed' => function (self $bar) {
                 return Helper::formatTime(time() - $bar->getStartTime());
             },
-            'remaining' => function (ProgressBar $bar) {
+            'remaining' => function (self $bar) {
                 if (!$bar->getMaxSteps()) {
                     throw new LogicException('Unable to display the remaining time if the maximum number of steps is not set.');
                 }
@@ -530,7 +530,7 @@ private static function initPlaceholderFormatters()
 
                 return Helper::formatTime($remaining);
             },
-            'estimated' => function (ProgressBar $bar) {
+            'estimated' => function (self $bar) {
                 if (!$bar->getMaxSteps()) {
                     throw new LogicException('Unable to display the estimated time if the maximum number of steps is not set.');
                 }
@@ -543,24 +543,24 @@ private static function initPlaceholderFormatters()
 
                 return Helper::formatTime($estimated);
             },
-            'memory' => function (ProgressBar $bar) {
+            'memory' => function (self $bar) {
                 return Helper::formatMemory(memory_get_usage(true));
             },
-            'current' => function (ProgressBar $bar) {
+            'current' => function (self $bar) {
                 return str_pad($bar->getProgress(), $bar->getStepWidth(), ' ', STR_PAD_LEFT);
             },
-            'max' => function (ProgressBar $bar) {
+            'max' => function (self $bar) {
                 return $bar->getMaxSteps();
             },
-            'percent' => function (ProgressBar $bar) {
+            'percent' => function (self $bar) {
                 return floor($bar->getProgressPercent() * 100);
             },
-        );
+        ];
     }
 
     private static function initFormats()
     {
-        return array(
+        return [
             'normal' => ' %current%/%max% [%bar%] %percent:3s%%',
             'normal_nomax' => ' %current% [%bar%]',
 
@@ -572,7 +572,7 @@ private static function initFormats()
 
             'debug' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%/%estimated:-6s% %memory:6s%',
             'debug_nomax' => ' %current% [%bar%] %elapsed:6s% %memory:6s%',
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Helper/ProgressIndicator.php b/src/Symfony/Component/Console/Helper/ProgressIndicator.php
index 9de766a24689..3f5751fae639 100644
--- a/src/Symfony/Component/Console/Helper/ProgressIndicator.php
+++ b/src/Symfony/Component/Console/Helper/ProgressIndicator.php
@@ -48,7 +48,7 @@ public function __construct(OutputInterface $output, $format = null, $indicatorC
         }
 
         if (null === $indicatorValues) {
-            $indicatorValues = array('-', '\\', '|', '/');
+            $indicatorValues = ['-', '\\', '|', '/'];
         }
 
         $indicatorValues = array_values($indicatorValues);
@@ -239,25 +239,25 @@ private function getCurrentTimeInMilliseconds()
 
     private static function initPlaceholderFormatters()
     {
-        return array(
-            'indicator' => function (ProgressIndicator $indicator) {
+        return [
+            'indicator' => function (self $indicator) {
                 return $indicator->indicatorValues[$indicator->indicatorCurrent % \count($indicator->indicatorValues)];
             },
-            'message' => function (ProgressIndicator $indicator) {
+            'message' => function (self $indicator) {
                 return $indicator->message;
             },
-            'elapsed' => function (ProgressIndicator $indicator) {
+            'elapsed' => function (self $indicator) {
                 return Helper::formatTime(time() - $indicator->startTime);
             },
             'memory' => function () {
                 return Helper::formatMemory(memory_get_usage(true));
             },
-        );
+        ];
     }
 
     private static function initFormats()
     {
-        return array(
+        return [
             'normal' => ' %indicator% %message%',
             'normal_no_ansi' => ' %message%',
 
@@ -266,6 +266,6 @@ private static function initFormats()
 
             'very_verbose' => ' %indicator% %message% (%elapsed:6s%, %memory:6s%)',
             'very_verbose_no_ansi' => ' %message% (%elapsed:6s%, %memory:6s%)',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Console/Helper/QuestionHelper.php b/src/Symfony/Component/Console/Helper/QuestionHelper.php
index bdf10f0cec40..d3188897f37c 100644
--- a/src/Symfony/Component/Console/Helper/QuestionHelper.php
+++ b/src/Symfony/Component/Console/Helper/QuestionHelper.php
@@ -191,7 +191,7 @@ protected function writePrompt(OutputInterface $output, Question $question)
         $message = $question->getQuestion();
 
         if ($question instanceof ChoiceQuestion) {
-            $maxWidth = max(array_map(array($this, 'strlen'), array_keys($question->getChoices())));
+            $maxWidth = max(array_map([$this, 'strlen'], array_keys($question->getChoices())));
 
             $messages = (array) $question->getQuestion();
             foreach ($question->getChoices() as $key => $value) {
@@ -448,7 +448,7 @@ private function getShell()
         if (file_exists('/usr/bin/env')) {
             // handle other OSs with bash/zsh/ksh/csh if available to hide the answer
             $test = "/usr/bin/env %s -c 'echo OK' 2> /dev/null";
-            foreach (array('bash', 'zsh', 'ksh', 'csh') as $sh) {
+            foreach (['bash', 'zsh', 'ksh', 'csh'] as $sh) {
                 if ('OK' === rtrim(shell_exec(sprintf($test, $sh)))) {
                     self::$shell = $sh;
                     break;
diff --git a/src/Symfony/Component/Console/Helper/Table.php b/src/Symfony/Component/Console/Helper/Table.php
index c15e5ab23c25..1c439dc1bfe9 100644
--- a/src/Symfony/Component/Console/Helper/Table.php
+++ b/src/Symfony/Component/Console/Helper/Table.php
@@ -27,17 +27,17 @@ class Table
     /**
      * Table headers.
      */
-    private $headers = array();
+    private $headers = [];
 
     /**
      * Table rows.
      */
-    private $rows = array();
+    private $rows = [];
 
     /**
      * Column widths cache.
      */
-    private $effectiveColumnWidths = array();
+    private $effectiveColumnWidths = [];
 
     /**
      * Number of columns cache.
@@ -59,14 +59,14 @@ class Table
     /**
      * @var array
      */
-    private $columnStyles = array();
+    private $columnStyles = [];
 
     /**
      * User set column widths.
      *
      * @var array
      */
-    private $columnWidths = array();
+    private $columnWidths = [];
 
     private static $styles;
 
@@ -199,7 +199,7 @@ public function setColumnWidth($columnIndex, $width)
      */
     public function setColumnWidths(array $widths)
     {
-        $this->columnWidths = array();
+        $this->columnWidths = [];
         foreach ($widths as $index => $width) {
             $this->setColumnWidth($index, $width);
         }
@@ -211,7 +211,7 @@ public function setHeaders(array $headers)
     {
         $headers = array_values($headers);
         if (!empty($headers) && !\is_array($headers[0])) {
-            $headers = array($headers);
+            $headers = [$headers];
         }
 
         $this->headers = $headers;
@@ -221,7 +221,7 @@ public function setHeaders(array $headers)
 
     public function setRows(array $rows)
     {
-        $this->rows = array();
+        $this->rows = [];
 
         return $this->addRows($rows);
     }
@@ -402,7 +402,7 @@ private function calculateNumberOfColumns()
             return;
         }
 
-        $columns = array(0);
+        $columns = [0];
         foreach (array_merge($this->headers, $this->rows) as $row) {
             if ($row instanceof TableSeparator) {
                 continue;
@@ -416,7 +416,7 @@ private function calculateNumberOfColumns()
 
     private function buildTableRows($rows)
     {
-        $unmergedRows = array();
+        $unmergedRows = [];
         for ($rowKey = 0; $rowKey < \count($rows); ++$rowKey) {
             $rows = $this->fillNextRows($rows, $rowKey);
 
@@ -428,7 +428,7 @@ private function buildTableRows($rows)
                 $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                 foreach ($lines as $lineKey => $line) {
                     if ($cell instanceof TableCell) {
-                        $line = new TableCell($line, array('colspan' => $cell->getColspan()));
+                        $line = new TableCell($line, ['colspan' => $cell->getColspan()]);
                     }
                     if (0 === $lineKey) {
                         $rows[$rowKey][$column] = $line;
@@ -439,7 +439,7 @@ private function buildTableRows($rows)
             }
         }
 
-        $tableRows = array();
+        $tableRows = [];
         foreach ($rows as $rowKey => $row) {
             $tableRows[] = $this->fillCells($row);
             if (isset($unmergedRows[$rowKey])) {
@@ -462,27 +462,27 @@ private function buildTableRows($rows)
      */
     private function fillNextRows(array $rows, $line)
     {
-        $unmergedRows = array();
+        $unmergedRows = [];
         foreach ($rows[$line] as $column => $cell) {
             if (null !== $cell && !$cell instanceof TableCell && !is_scalar($cell) && !(\is_object($cell) && method_exists($cell, '__toString'))) {
                 throw new InvalidArgumentException(sprintf('A cell must be a TableCell, a scalar or an object implementing __toString, %s given.', \gettype($cell)));
             }
             if ($cell instanceof TableCell && $cell->getRowspan() > 1) {
                 $nbLines = $cell->getRowspan() - 1;
-                $lines = array($cell);
+                $lines = [$cell];
                 if (strstr($cell, "\n")) {
                     $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                     $nbLines = \count($lines) > $nbLines ? substr_count($cell, "\n") : $nbLines;
 
-                    $rows[$line][$column] = new TableCell($lines[0], array('colspan' => $cell->getColspan()));
+                    $rows[$line][$column] = new TableCell($lines[0], ['colspan' => $cell->getColspan()]);
                     unset($lines[0]);
                 }
 
                 // create a two dimensional array (rowspan x colspan)
-                $unmergedRows = array_replace_recursive(array_fill($line + 1, $nbLines, array()), $unmergedRows);
+                $unmergedRows = array_replace_recursive(array_fill($line + 1, $nbLines, []), $unmergedRows);
                 foreach ($unmergedRows as $unmergedRowKey => $unmergedRow) {
                     $value = isset($lines[$unmergedRowKey - $line]) ? $lines[$unmergedRowKey - $line] : '';
-                    $unmergedRows[$unmergedRowKey][$column] = new TableCell($value, array('colspan' => $cell->getColspan()));
+                    $unmergedRows[$unmergedRowKey][$column] = new TableCell($value, ['colspan' => $cell->getColspan()]);
                     if ($nbLines === $unmergedRowKey - $line) {
                         break;
                     }
@@ -495,7 +495,7 @@ private function fillNextRows(array $rows, $line)
             if (isset($rows[$unmergedRowKey]) && \is_array($rows[$unmergedRowKey]) && ($this->getNumberOfColumns($rows[$unmergedRowKey]) + $this->getNumberOfColumns($unmergedRows[$unmergedRowKey]) <= $this->numberOfColumns)) {
                 foreach ($unmergedRow as $cellKey => $cell) {
                     // insert cell into row at cellKey position
-                    array_splice($rows[$unmergedRowKey], $cellKey, 0, array($cell));
+                    array_splice($rows[$unmergedRowKey], $cellKey, 0, [$cell]);
                 }
             } else {
                 $row = $this->copyRow($rows, $unmergedRowKey - 1);
@@ -504,7 +504,7 @@ private function fillNextRows(array $rows, $line)
                         $row[$column] = $unmergedRow[$column];
                     }
                 }
-                array_splice($rows, $unmergedRowKey, 0, array($row));
+                array_splice($rows, $unmergedRowKey, 0, [$row]);
             }
         }
 
@@ -518,7 +518,7 @@ private function fillNextRows(array $rows, $line)
      */
     private function fillCells($row)
     {
-        $newRow = array();
+        $newRow = [];
         foreach ($row as $column => $cell) {
             $newRow[] = $cell;
             if ($cell instanceof TableCell && $cell->getColspan() > 1) {
@@ -544,7 +544,7 @@ private function copyRow(array $rows, $line)
         foreach ($row as $cellKey => $cellValue) {
             $row[$cellKey] = '';
             if ($cellValue instanceof TableCell) {
-                $row[$cellKey] = new TableCell('', array('colspan' => $cellValue->getColspan()));
+                $row[$cellKey] = new TableCell('', ['colspan' => $cellValue->getColspan()]);
             }
         }
 
@@ -590,7 +590,7 @@ private function getRowColumns(array $row)
     private function calculateColumnsWidt
10000
h(array $rows)
     {
         for ($column = 0; $column < $this->numberOfColumns; ++$column) {
-            $lengths = array();
+            $lengths = [];
             foreach ($rows as $row) {
                 if ($row instanceof TableSeparator) {
                     continue;
@@ -653,7 +653,7 @@ private function getCellWidth(array $row, $column)
      */
     private function cleanup()
     {
-        $this->effectiveColumnWidths = array();
+        $this->effectiveColumnWidths = [];
         $this->numberOfColumns = null;
     }
 
@@ -682,12 +682,12 @@ private static function initStyles()
             ->setCellHeaderFormat('%s')
         ;
 
-        return array(
+        return [
             'default' => new TableStyle(),
             'borderless' => $borderless,
             'compact' => $compact,
             'symfony-style-guide' => $styleGuide,
-        );
+        ];
     }
 
     private function resolveStyle($name)
diff --git a/src/Symfony/Component/Console/Helper/TableCell.php b/src/Symfony/Component/Console/Helper/TableCell.php
index fb6c9fd37e1c..cc5145329c18 100644
--- a/src/Symfony/Component/Console/Helper/TableCell.php
+++ b/src/Symfony/Component/Console/Helper/TableCell.php
@@ -19,16 +19,16 @@
 class TableCell
 {
     private $value;
-    private $options = array(
+    private $options = [
         'rowspan' => 1,
         'colspan' => 1,
-    );
+    ];
 
     /**
      * @param string $value
      * @param array  $options
      */
-    public function __construct($value = '', array $options = array())
+    public function __construct($value = '', array $options = [])
     {
         if (is_numeric($value) && !\is_string($value)) {
             $value = (string) $value;
diff --git a/src/Symfony/Component/Console/Helper/TableSeparator.php b/src/Symfony/Component/Console/Helper/TableSeparator.php
index c7b8dc9c2233..e541c5315601 100644
--- a/src/Symfony/Component/Console/Helper/TableSeparator.php
+++ b/src/Symfony/Component/Console/Helper/TableSeparator.php
@@ -18,7 +18,7 @@
  */
 class TableSeparator extends TableCell
 {
-    public function __construct(array $options = array())
+    public function __construct(array $options = [])
     {
         parent::__construct('', $options);
     }
diff --git a/src/Symfony/Component/Console/Helper/TableStyle.php b/src/Symfony/Component/Console/Helper/TableStyle.php
index 0ee9dd16710c..bc9c7e94dbbd 100644
--- a/src/Symfony/Component/Console/Helper/TableStyle.php
+++ b/src/Symfony/Component/Console/Helper/TableStyle.php
@@ -237,7 +237,7 @@ public function getBorderFormat()
      */
     public function setPadType($padType)
     {
-        if (!\in_array($padType, array(STR_PAD_LEFT, STR_PAD_RIGHT, STR_PAD_BOTH), true)) {
+        if (!\in_array($padType, [STR_PAD_LEFT, STR_PAD_RIGHT, STR_PAD_BOTH], true)) {
             throw new InvalidArgumentException('Invalid padding type. Expected one of (STR_PAD_LEFT, STR_PAD_RIGHT, STR_PAD_BOTH).');
         }
 
diff --git a/src/Symfony/Component/Console/Input/ArgvInput.php b/src/Symfony/Component/Console/Input/ArgvInput.php
index 516fd87fd2e6..142096ae6279 100644
--- a/src/Symfony/Component/Console/Input/ArgvInput.php
+++ b/src/Symfony/Component/Console/Input/ArgvInput.php
@@ -174,7 +174,7 @@ private function parseArgument($token)
         // if input is expecting another argument, add it
         if ($this->definition->hasArgument($c)) {
             $arg = $this->definition->getArgument($c);
-            $this->arguments[$arg->getName()] = $arg->isArray() ? array($token) : $token;
+            $this->arguments[$arg->getName()] = $arg->isArray() ? [$token] : $token;
 
         // if last argument isArray(), append token to last argument
         } elseif ($this->definition->hasArgument($c - 1) && $this->definition->getArgument($c - 1)->isArray()) {
@@ -229,11 +229,11 @@ private function addLongOption($name, $value)
             throw new RuntimeException(sprintf('The "--%s" option does not accept a value.', $name));
         }
 
-        if (\in_array($value, array('', null), true) && $option->acceptValue() && \count($this->parsed)) {
+        if (\in_array($value, ['', null], true) && $option->acceptValue() && \count($this->parsed)) {
             // if option accepts an optional or mandatory argument
             // let's see if there is one provided
             $next = array_shift($this->parsed);
-            if ((isset($next[0]) && '-' !== $next[0]) || \in_array($next, array('', null), true)) {
+            if ((isset($next[0]) && '-' !== $next[0]) || \in_array($next, ['', null], true)) {
                 $value = $next;
             } else {
                 array_unshift($this->parsed, $next);
diff --git a/src/Symfony/Component/Console/Input/ArrayInput.php b/src/Symfony/Component/Console/Input/ArrayInput.php
index 8b6917fc7c09..72706ddbbf14 100644
--- a/src/Symfony/Component/Console/Input/ArrayInput.php
+++ b/src/Symfony/Component/Console/Input/ArrayInput.php
@@ -103,7 +103,7 @@ public function getParameterOption($values, $default = false, $onlyParams = fals
      */
     public function __toString()
     {
-        $params = array();
+        $params = [];
         foreach ($this->parameters as $param => $val) {
             if ($param && '-' === $param[0]) {
                 if (\is_array($val)) {
@@ -114,7 +114,7 @@ public function __toString()
                     $params[] = $param.('' != $val ? '='.$this->escapeToken($val) : '');
                 }
             } else {
-                $params[] = \is_array($val) ? implode(' ', array_map(array($this, 'escapeToken'), $val)) : $this->escapeToken($val);
+                $params[] = \is_array($val) ? implode(' ', array_map([$this, 'escapeToken'], $val)) : $this->escapeToken($val);
             }
         }
 
diff --git a/src/Symfony/Component/Console/Input/Input.php b/src/Symfony/Component/Console/Input/Input.php
index fa5644d1fdba..7a16e0ee4b9f 100644
--- a/src/Symfony/Component/Console/Input/Input.php
+++ b/src/Symfony/Component/Console/Input/Input.php
@@ -29,8 +29,8 @@ abstract class Input implements InputInterface, StreamableInputInterface
 {
     protected $definition;
     protected $stream;
-    protected $options = array();
-    protected $arguments = array();
+    protected $options = [];
+    protected $arguments = [];
     protected $interactive = true;
 
     public function __construct(InputDefinition $definition = null)
@@ -48,8 +48,8 @@ public function __construct(InputDefinition $definition = null)
      */
     public function bind(InputDefinition $definition)
     {
-        $this->arguments = array();
-        $this->options = array();
+        $this->arguments = [];
+        $this->options = [];
         $this->definition = $definition;
 
         $this->parse();
diff --git a/src/Symfony/Component/Console/Input/InputArgument.php b/src/Symfony/Component/Console/Input/InputArgument.php
index 5b3b98ba707e..4c2b6a66cac1 100644
--- a/src/Symfony/Component/Console/Input/InputArgument.php
+++ b/src/Symfony/Component/Console/Input/InputArgument.php
@@ -98,7 +98,7 @@ public function setDefault($default = null)
 
         if ($this->isArray()) {
             if (null === $default) {
-                $default = array();
+                $default = [];
             } elseif (!\is_array($default)) {
                 throw new LogicException('A default value for an array argument must be an array.');
             }
diff --git a/src/Symfony/Component/Console/Input/InputDefinition.php b/src/Symfony/Component/Console/Input/InputDefinition.php
index 19f8db33dac7..65860e460d08 100644
--- a/src/Symfony/Component/Console/Input/InputDefinition.php
+++ b/src/Symfony/Component/Console/Input/InputDefinition.php
@@ -38,7 +38,7 @@ class InputDefinition
     /**
      * @param array $definition An array of InputArgument and InputOption instance
      */
-    public function __construct(array $definition = array())
+    public function __construct(array $definition = [])
     {
         $this->setDefinition($definition);
     }
@@ -48,8 +48,8 @@ public function __construct(array $definition = array())
      */
     public function setDefinition(array $definition)
     {
-        $arguments = array();
-        $options = array();
+        $arguments = [];
+        $options = [];
         foreach ($definition as $item) {
             if ($item instanceof InputOption) {
                 $options[] = $item;
@@ -67,9 +67,9 @@ public function setDefinition(array $definition)
      *
      * @param InputArgument[] $arguments An array of InputArgument objects
      */
-    public function setArguments($arguments = array())
+    public function setArguments($arguments = [])
     {
-        $this->arguments = array();
+        $this->arguments = [];
         $this->requiredCount = 0;
         $this->hasOptional = false;
         $this->hasAnArrayArgument = false;
@@ -81,7 +81,7 @@ public function setArguments($arguments = array())
      *
      * @param InputArgument[] $arguments An array of InputArgument objects
      */
-    public function addArguments($arguments = array())
+    public function addArguments($arguments = [])
     {
         if (null !== $arguments) {
             foreach ($arguments as $argument) {
@@ -191,7 +191,7 @@ public function getArgumentRequiredCount()
      */
     public function getArgumentDefaults()
     {
-        $values = array();
+        $values = [];
         foreach ($this->arguments as $argument) {
             $values[$argument->getName()] = $argument->getDefault();
         }
@@ -204,10 +204,10 @@ public function getArgumentDefaults()
      *
      * @param InputOption[] $options An array of InputOption objects
      */
-    public function setOptions($options = array())
+    public function setOptions($options = [])
     {
-        $this->options = array();
-        $this->shortcuts = array();
+        $this->options = [];
+        $this->shortcuts = [];
         $this->addOptions($options);
     }
 
@@ -216,7 +216,7 @@ public function setOptions($options = array())
      *
      * @param InputOption[] $options An array of InputOption objects
      */
-    public function addOptions($options = array())
+    public function addOptions($options = [])
     {
         foreach ($options as $option) {
             $this->addOption($option);
@@ -322,7 +322,7 @@ public function getOptionForShortcut($shortcut)
      */
     public function getOptionDefaults()
     {
-        $values = array();
+        $values = [];
         foreach ($this->options as $option) {
             $values[$option->getName()] = $option->getDefault();
         }
@@ -357,7 +357,7 @@ private function shortcutToName($shortcut)
      */
     public function getSynopsis($short = false)
     {
-        $elements = array();
+        $elements = [];
 
         if ($short && $this->getOptions()) {
             $elements[] = '[options]';
diff --git a/src/Symfony/Component/Console/Input/InputOption.php b/src/Symfony/Component/Console/Input/InputOption.php
index d30e571bf4b8..b0bd28f51602 100644
--- a/src/Symfony/Component/Console/Input/InputOption.php
+++ b/src/Symfony/Component/Console/Input/InputOption.php
@@ -161,7 +161,7 @@ public function setDefault($default = null)
 
         if ($this->isArray()) {
             if (null === $default) {
-                $default = array();
+                $default = [];
             } elseif (!\is_array($default)) {
                 throw new LogicException('A default value for an array option must be an array.');
             }
diff --git a/src/Symfony/Component/Console/Input/StringInput.php b/src/Symfony/Component/Console/Input/StringInput.php
index eb39ad692778..32d270faf183 100644
--- a/src/Symfony/Component/Console/Input/StringInput.php
+++ b/src/Symfony/Component/Console/Input/StringInput.php
@@ -32,7 +32,7 @@ class StringInput extends ArgvInput
      */
     public function __construct($input)
     {
-        parent::__construct(array());
+        parent::__construct([]);
 
         $this->setTokens($this->tokenize($input));
     }
@@ -48,13 +48,13 @@ public function __construct($input)
      */
     private function tokenize($input)
     {
-        $tokens = array();
+        $tokens = [];
         $length = \strlen($input);
         $cursor = 0;
         while ($cursor < $length) {
             if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
             } elseif (preg_match('/([^="\'\s]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
-                $tokens[] = $match[1].$match[2].stripcslashes(str_replace(array('"\'', '\'"', '\'\'', '""'), '', substr($match[3], 1, \strlen($match[3]) - 2)));
+                $tokens[] = $match[1].$match[2].stripcslashes(str_replace(['"\'', '\'"', '\'\'', '""'], '', substr($match[3], 1, \strlen($match[3]) - 2)));
             } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {
                 $tokens[] = stripcslashes(substr($match[0], 1, \strlen($match[0]) - 2));
             } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {
diff --git a/src/Symfony/Component/Console/Logger/ConsoleLogger.php b/src/Symfony/Component/Console/Logger/ConsoleLogger.php
index ea7f9bf250d5..e531bb1ca56c 100644
--- a/src/Symfony/Component/Console/Logger/ConsoleLogger.php
+++ b/src/Symfony/Component/Console/Logger/ConsoleLogger.php
@@ -30,7 +30,7 @@ class ConsoleLogger extends AbstractLogger
     const ERROR = 'error';
 
     private $output;
-    private $verbosityLevelMap = array(
+    private $verbosityLevelMap = [
         LogLevel::EMERGENCY => OutputInterface::VERBOSITY_NORMAL,
         LogLevel::ALERT => OutputInterface::VERBOSITY_NORMAL,
         LogLevel::CRITICAL => OutputInterface::VERBOSITY_NORMAL,
@@ -39,8 +39,8 @@ class ConsoleLogger extends AbstractLogger
         LogLevel::NOTICE => OutputInterface::VERBOSITY_VERBOSE,
         LogLevel::INFO => OutputInterface::VERBOSITY_VERY_VERBOSE,
         LogLevel::DEBUG => OutputInterface::VERBOSITY_DEBUG,
-    );
-    private $formatLevelMap = array(
+    ];
+    private $formatLevelMap = [
         LogLevel::EMERGENCY => self::ERROR,
         LogLevel::ALERT => self::ERROR,
         LogLevel::CRITICAL => self::ERROR,
@@ -49,10 +49,10 @@ class ConsoleLogger extends AbstractLogger
         LogLevel::NOTICE => self::INFO,
         LogLevel::INFO => self::INFO,
         LogLevel::DEBUG => self::INFO,
-    );
+    ];
     private $errored = false;
 
-    public function __construct(OutputInterface $output, array $verbosityLevelMap = array(), array $formatLevelMap = array())
+    public function __construct(OutputInterface $output, array $verbosityLevelMap = [], array $formatLevelMap = [])
     {
         $this->output = $output;
         $this->verbosityLevelMap = $verbosityLevelMap + $this->verbosityLevelMap;
@@ -62,7 +62,7 @@ public function __construct(OutputInterface $output, array $verbosityLevelMap =
     /**
      * {@inheritdoc}
      */
-    public function log($level, $message, array $context = array())
+    public function log($level, $message, array $context = [])
     {
         if (!isset($this->verbosityLevelMap[$level])) {
             throw new InvalidArgumentException(sprintf('The log level "%s" does not exist.', $level));
@@ -111,7 +111,7 @@ private function interpolate($message, array $context)
             return $message;
         }
 
-        $replacements = array();
+        $replacements = [];
         foreach ($context as $key => $val) {
             if (null === $val || is_scalar($val) || (\is_object($val) && method_exists($val, '__toString'))) {
                 $replacements["{{$key}}"] = $val;
diff --git a/src/Symfony/Component/Console/Output/ConsoleOutput.php b/src/Symfony/Component/Console/Output/ConsoleOutput.php
index 3cb0fb1aeb4f..61dc7cbdca93 100644
--- a/src/Symfony/Component/Console/Output/ConsoleOutput.php
+++ b/src/Symfony/Component/Console/Output/ConsoleOutput.php
@@ -121,11 +121,11 @@ protected function hasStderrSupport()
      */
     private function isRunningOS400()
     {
-        $checks = array(
+        $checks = [
             \function_exists('php_uname') ? php_uname('s') : '',
             getenv('OSTYPE'),
             PHP_OS,
-        );
+        ];
 
         return false !== stripos(implode(';', $checks), 'OS400');
     }
diff --git a/src/Symfony/Component/Console/Question/ChoiceQuestion.php b/src/Symfony/Component/Console/Question/ChoiceQuestion.php
index 0a45d7493252..5cb5056903e4 100644
--- a/src/Symfony/Component/Console/Question/ChoiceQuestion.php
+++ b/src/Symfony/Component/Console/Question/ChoiceQuestion.php
@@ -144,12 +144,12 @@ private function getDefaultValidator()
                 }
                 $selectedChoices = explode(',', $selectedChoices);
             } else {
-                $selectedChoices = array($selected);
+                $selectedChoices = [$selected];
             }
 
-            $multiselectChoices = array();
+            $multiselectChoices = [];
             foreach ($selectedChoices as $value) {
-                $results = array();
+                $results = [];
                 foreach ($choices as $key => $choice) {
                     if ($choice === $value) {
                         $results[] = $key;
diff --git a/src/Symfony/Component/Console/Style/SymfonyStyle.php b/src/Symfony/Component/Console/Style/SymfonyStyle.php
index e74ab66270a1..e0ced01b2274 100644
--- a/src/Symfony/Component/Console/Style/SymfonyStyle.php
+++ b/src/Symfony/Component/Console/Style/SymfonyStyle.php
@@ -63,7 +63,7 @@ public function __construct(InputInterface $input, OutputInterface $output)
      */
     public function block($messages, $type = null, $style = null, $prefix = ' ', $padding = false, $escape = true)
     {
-        $messages = \is_array($messages) ? array_values($messages) : array($messages);
+        $messages = \is_array($messages) ? array_values($messages) : [$messages];
 
         $this->autoPrependBlock();
         $this->writeln($this->createBlock($messages, $type, $style, $prefix, $padding, $escape));
@@ -76,10 +76,10 @@ public function block($messages, $type = null, $style = null, $prefix = ' ', $pa
     public function title($message)
     {
         $this->autoPrependBlock();
-        $this->writeln(array(
+        $this->writeln([
             sprintf('<comment>%s</>', OutputFormatter::escapeTrailingBackslash($message)),
             sprintf('<comment>%s</>', str_repeat('=', Helper::strlenWithoutDecoration($this->getFormatter(), $message))),
-        ));
+        ]);
         $this->newLine();
     }
 
@@ -89,10 +89,10 @@ public function title($message)
     public function section($message)
     {
         $this->autoPrependBlock();
-        $this->writeln(array(
+        $this->writeln([
             sprintf('<comment>%s</>', OutputFormatter::escapeTrailingBackslash($message)),
             sprintf('<comment>%s</>', str_repeat('-', Helper::strlenWithoutDecoration($this->getFormatter(), $message))),
-        ));
+        ]);
         $this->newLine();
     }
 
@@ -117,7 +117,7 @@ public function text($message)
     {
         $this->autoPrependText();
 
-        $messages = \is_array($message) ? array_values($message) : array($message);
+        $messages = \is_array($message) ? array_values($message) : [$message];
         foreach ($messages as $message) {
             $this->writeln(sprintf(' %s', $message));
         }
@@ -376,14 +376,14 @@ private function reduceBuffer($messages)
         // Preserve the last 4 chars inserted (PHP_EOL on windows is two chars) in the history buffer
         return array_map(function ($value) {
             return substr($value, -4);
-        }, array_merge(array($this->bufferedOutput->fetch()), (array) $messages));
+        }, array_merge([$this->bufferedOutput->fetch()], (array) $messages));
     }
 
     private function createBlock($messages, $type = null, $style = null, $prefix = ' ', $padding = false, $escape = false)
     {
         $indentLength = 0;
         $prefixLength = Helper::strlenWithoutDecoration($this->getFormatter(), $prefix);
-        $lines = array();
+        $lines = [];
 
         if (null !== $type) {
             $type = sprintf('[%s] ', $type);
diff --git a/src/Symfony/Component/Console/Terminal.php b/src/Symfony/Component/Console/Terminal.php
index 3930ca0cdc8e..456cca11ca8a 100644
--- a/src/Symfony/Component/Console/Terminal.php
+++ b/src/Symfony/Component/Console/Terminal.php
@@ -91,11 +91,11 @@ private static function getConsoleMode()
             return;
         }
 
-        $descriptorspec = array(
-            1 => array('pipe', 'w'),
-            2 => array('pipe', 'w'),
-        );
-        $process = proc_open('mode CON', $descriptorspec, $pipes, null, null, array('suppress_errors' => true));
+        $descriptorspec = [
+            1 => ['pipe', 'w'],
+            2 => ['pipe', 'w'],
+        ];
+        $process = proc_open('mode CON', $descriptorspec, $pipes, null, null, ['suppress_errors' => true]);
         if (\is_resource($process)) {
             $info = stream_get_contents($pipes[1]);
             fclose($pipes[1]);
@@ -103,7 +103,7 @@ private static function getConsoleMode()
             proc_close($process);
 
             if (preg_match('/--------+\r?\n.+?(\d+)\r?\n.+?(\d+)\r?\n/', $info, $matches)) {
-                return array((int) $matches[2], (int) $matches[1]);
+                return [(int) $matches[2], (int) $matches[1]];
             }
         }
     }
@@ -119,12 +119,12 @@ private static function getSttyColumns()
             return;
         }
 
-        $descriptorspec = array(
-            1 => array('pipe', 'w'),
-            2 => array('pipe', 'w'),
-        );
+        $descriptorspec = [
+            1 => ['pipe', 'w'],
+            2 => ['pipe', 'w'],
+        ];
 
-        $process = proc_open('stty -a | grep columns', $descriptorspec, $pipes, null, null, array('suppress_errors' => true));
+        $process = proc_open('stty -a | grep columns', $descriptorspec, $pipes, null, null, ['suppress_errors' => true]);
         if (\is_resource($process)) {
             $info = stream_get_contents($pipes[1]);
             fclose($pipes[1]);
diff --git a/src/Symfony/Component/Console/Tester/ApplicationTester.php b/src/Symfony/Component/Console/Tester/ApplicationTester.php
index c0f8c7207f2a..bcf91d640b7d 100644
--- a/src/Symfony/Component/Console/Tester/ApplicationTester.php
+++ b/src/Symfony/Component/Console/Tester/ApplicationTester.php
@@ -59,7 +59,7 @@ public function __construct(Application $application)
      *
      * @return int The command exit code
      */
-    public function run(array $input, $options = array())
+    public function run(array $input, $options = [])
     {
         $this->input = new ArrayInput($input);
         if (isset($options['interactive'])) {
diff --git a/src/Symfony/Component/Console/Tester/CommandTester.php b/src/Symfony/Component/Console/Tester/CommandTester.php
index c2d18fa28843..229471e13a35 100644
--- a/src/Symfony/Component/Console/Tester/CommandTester.php
+++ b/src/Symfony/Component/Console/Tester/CommandTester.php
@@ -28,7 +28,7 @@ class CommandTester
     private $command;
     private $input;
     private $output;
-    private $inputs = array();
+    private $inputs = [];
     private $statusCode;
 
     public function __construct(Command $command)
@@ -50,7 +50,7 @@ public function __construct(Command $command)
      *
      * @return int The command exit code
      */
-    public function execute(array $input, array $options = array())
+    public function execute(array $input, array $options = [])
     {
         // set the command name automatically if the application requires
         // this argument and no command name was passed
@@ -58,7 +58,7 @@ public function execute(array $input, array $options = array())
             && (null !== $application = $this->command->getApplication())
             && $application->getDefinition()->hasArgument('command')
         ) {
-            $input = array_merge(array('command' => $this->command->getName()), $input);
+            $input = array_merge(['command' => $this->command->getName()], $input);
         }
 
         $this->input = new ArrayInput($input);
diff --git a/src/Symfony/Component/Console/Tests/ApplicationTest.php b/src/Symfony/Component/Console/Tests/ApplicationTest.php
index 7cd473e5dd2c..2cb3324630a0 100644
--- a/src/Symfony/Component/Console/Tests/ApplicationTest.php
+++ b/src/Symfony/Component/Console/Tests/ApplicationTest.php
@@ -83,7 +83,7 @@ public function testConstructor()
         $application = new Application('foo', 'bar');
         $this->assertEquals('foo', $application->getName(), '__construct() takes the application name as its first argument');
         $this->assertEquals('bar', $application->getVersion(), '__construct() takes the application version as its second argument');
-        $this->assertEquals(array('help', 'list'), array_keys($application->all()), '__construct() registered the help and list commands by default');
+        $this->assertEquals(['help', 'list'], array_keys($application->all()), '__construct() registered the help and list commands by default');
     }
 
     public function testSetGetName()
@@ -133,9 +133,9 @@ public function testAllWithCommandLoader()
         $commands = $application->all('foo');
         $this->assertCount(1, $commands, '->all() takes a namespace as its first argument');
 
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar1' => function () { return new \Foo1Command(); },
-        )));
+        ]));
         $commands = $application->all('foo');
         $this->assertCount(2, $commands, '->all() takes a namespace as its first argument');
         $this->assertInstanceOf(\FooCommand::class, $commands['foo:bar'], '->all() returns the registered commands');
@@ -157,9 +157,9 @@ public function testAdd()
         $this->assertEquals($foo, $commands['foo:bar'], '->add() registers a command');
 
         $application = new Application();
-        $application->addCommands(array($foo = new \FooCommand(), $foo1 = new \Foo1Command()));
+        $application->addCommands([$foo = new \FooCommand(), $foo1 = new \Foo1Command()]);
         $commands = $application->all();
-        $this->assertEquals(array($foo, $foo1), array($commands['foo:bar'], $commands['foo:bar1']), '->addCommands() registers an array of commands');
+        $this->assertEquals([$foo, $foo1], [$commands['foo:bar'], $commands['foo:bar1']], '->addCommands() registers an array of commands');
     }
 
     /**
@@ -205,9 +205,9 @@ public function testHasGetWithCommandLoader()
         $this->assertEquals($foo, $application->get('foo:bar'), '->get() returns a command by name');
         $this->assertEquals($foo, $application->get('afoobar'), '->get() returns a command by alias');
 
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar1' => function () { return new \Foo1Command(); },
-        )));
+        ]));
 
         $this->assertTrue($application->has('afoobar'), '->has() returns true if an instance is registered for an alias even with command loader');
         $this->assertEquals($foo, $application->get('foo:bar'), '->get() returns an instance by name even with command loader');
@@ -225,7 +225,7 @@ public function testSilentHelp()
         $application->setCatchExceptions(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('-h' => true, '-q' => true), array('decorated' => false));
+        $tester->run(['-h' => true, '-q' => true], ['decorated' => false]);
 
         $this->assertEmpty($tester->getDisplay(true));
     }
@@ -245,7 +245,7 @@ public function testGetNamespaces()
         $application = new Application();
         $application->add(new \FooCommand());
         $application->add(new \Foo1Command());
-        $this->assertEquals(array('foo'), $application->getNamespaces(), '->getNamespaces() returns an array of unique used namespaces');
+        $this->assertEquals(['foo'], $application->getNamespaces(), '->getNamespaces() returns an array of unique used namespaces');
     }
 
     public function testFindNamespace()
@@ -367,9 +367,9 @@ public function testFindCaseInsensitiveSuggestions()
     public function testFindWithCommandLoader()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar' => $f = function () { return new \FooCommand(); },
-        )));
+        ]));
 
         $this->assertInstanceOf('FooCommand', $application->find('foo:bar'), '->find() returns a command if its name exists');
         $this->assertInstanceOf('Symfony\Component\Console\Command\HelpCommand', $application->find('h'), '->find() returns a command if its name exists');
@@ -400,23 +400,23 @@ public function testFindWithAmbiguousAbbreviations($abbreviation, $expectedExcep
 
     public function provideAmbiguousAbbreviations()
     {
-        return array(
-            array('f', 'Command "f" is not defined.'),
-            array(
+        return [
+            ['f', 'Command "f" is not defined.'],
+            [
                 'a',
                 "Command \"a\" is ambiguous.\nDid you mean one of these?\n".
                 "    afoobar  The foo:bar command\n".
                 "    afoobar1 The foo:bar1 command\n".
                 '    afoobar2 The foo1:bar command',
-            ),
-            array(
+            ],
+            [
                 'foo:b',
                 "Command \"foo:b\" is ambiguous.\nDid you mean one of these?\n".
                 "    foo:bar  The foo:bar command\n".
                 "    foo:bar1 The foo:bar1 command\n".
                 '    foo1:bar The foo1:bar command',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testFindCommandEqualNamespace()
@@ -460,10 +460,10 @@ public function testFindAlternativeExceptionMessageSingle($name)
 
     public function provideInvalidCommandNamesSingle()
     {
-        return array(
-            array('foo3:barr'),
-            array('fooo3:bar'),
-        );
+        return [
+            ['foo3:barr'],
+            ['fooo3:bar'],
+        ];
     }
 
     public function testFindAlternativeExceptionMessageMultiple()
@@ -521,7 +521,7 @@ public function testFindAlternativeCommands()
             $this->fail('->find() throws a CommandNotFoundException if command does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if command does not exist');
-            $this->assertSame(array(), $e->getAlternatives());
+            $this->assertSame([], $e->getAlternatives());
             $this->assertEquals(sprintf('Command "%s" is not defined.', $commandName), $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, without alternatives');
         }
 
@@ -532,7 +532,7 @@ public function testFindAlternativeCommands()
             $this->fail('->find() throws a CommandNotFoundException if command does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if command does not exist');
-            $this->assertSame(array('afoobar1', 'foo:bar1'), $e->getAlternatives());
+            $this->assertSame(['afoobar1', 'foo:bar1'], $e->getAlternatives());
             $this->assertRegExp(sprintf('/Command "%s" is not defined./', $commandName), $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternatives');
             $this->assertRegExp('/afoobar1/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternative : "afoobar1"');
             $this->assertRegExp('/foo:bar1/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternative : "foo:bar1"');
@@ -543,7 +543,7 @@ public function testFindAlternativeCommands()
     public function testFindAlternativeCommandsWithAnAlias()
     {
         $fooCommand = new \FooCommand();
-        $fooCommand->setAliases(array('foo2'));
+        $fooCommand->setAliases(['foo2']);
 
         $application = new Application();
         $application->add($fooCommand);
@@ -567,7 +567,7 @@ public function testFindAlternativeNamespace()
             $this->fail('->find() throws a CommandNotFoundException if namespace does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if namespace does not exist');
-            $this->assertSame(array(), $e->getAlternatives());
+            $this->assertSame([], $e->getAlternatives());
             $this->assertEquals('There are no commands defined in the "Unknown-namespace" namespace.', $e->getMessage(), '->find() throws a CommandNotFoundException if namespace does not exist, without alternatives');
         }
 
@@ -596,7 +596,7 @@ public function testFindAlternativesOutput()
         $application->add(new \Foo2Command());
         $application->add(new \Foo3Command());
 
-        $expectedAlternatives = array(
+        $expectedAlternatives = [
             'afoobar',
             'afoobar1',
             'afoobar2',
@@ -604,7 +604,7 @@ public function testFindAlternativesOutput()
             'foo3:bar',
             'foo:bar',
             'foo:bar1',
-        );
+        ];
 
         try {
             $application->find('foo');
@@ -619,10 +619,10 @@ public function testFindAlternativesOutput()
 
     public function testFindNamespaceDoesNotFailOnDeepSimilarNamespaces()
     {
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('getNamespaces'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['getNamespaces'])->getMock();
         $application->expects($this->once())
             ->method('getNamespaces')
-            ->will($this->returnValue(array('foo:sublong', 'bar:sub')));
+            ->will($this->returnValue(['foo:sublong', 'bar:sub']));
 
         $this->assertEquals('foo:sublong', $application->findNamespace('f:sub'));
     }
@@ -649,16 +649,16 @@ public function testSetCatchExceptions()
         $application->setCatchExceptions(true);
         $this->assertTrue($application->areExceptionsCaught());
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getDisplay(true), '->setCatchExceptions() sets the catch exception flag');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getErrorOutput(true), '->setCatchExceptions() sets the catch exception flag');
         $this->assertSame('', $tester->getDisplay(true));
 
         $application->setCatchExceptions(false);
         try {
-            $tester->run(array('command' => 'foo'), array('decorated' => false));
+            $tester->run(['command' => 'foo'], ['decorated' => false]);
             $this->fail('->setCatchExceptions() sets the catch exception flag');
         } catch (\Exception $e) {
             $this->assertInstanceOf('\Exception', $e, '->setCatchExceptions() sets the catch exception flag');
@@ -682,29 +682,29 @@ public function testRenderException()
         putenv('COLUMNS=120');
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exception');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE, 'capture_stderr_separately' => true]);
         $this->assertContains('Exception trace', $tester->getErrorOutput(), '->renderException() renders a pretty exception with a stack trace when verbosity is verbose');
 
-        $tester->run(array('command' => 'list', '--foo' => true), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'list', '--foo' => true], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception2.txt', $tester->getErrorOutput(true), '->renderException() renders the command synopsis when an exception occurs in the context of a command');
 
         $application->add(new \Foo3Command());
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE]);
         $this->assertRegExp('/\[Exception\]\s*First exception/', $tester->getDisplay(), '->renderException() renders a pretty exception without code exception when code exception is default and verbosity is verbose');
         $this->assertRegExp('/\[Exception\]\s*Second exception/', $tester->getDisplay(), '->renderException() renders a pretty exception without code exception when code exception is 0 and verbosity is verbose');
         $this->assertRegExp('/\[Exception \(404\)\]\s*Third exception/', $tester->getDisplay(), '->renderException() renders a pretty exception with code exception when code exception is 404 and verbosity is verbose');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3decorated.txt', $tester->getDisplay(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => true, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => true, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3decorated.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
         $application = new Application();
@@ -712,7 +712,7 @@ public function testRenderException()
         putenv('COLUMNS=32');
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false,  'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false,  'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception4.txt', $tester->getErrorOutput(true), '->renderException() wraps messages when they are bigger than the terminal');
         putenv('COLUMNS=120');
     }
@@ -727,10 +727,10 @@ public function testRenderExceptionWithDoubleWidthCharacters()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth1.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => true, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => true, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth1decorated.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
         $application = new Application();
@@ -740,7 +740,7 @@ public function testRenderExceptionWithDoubleWidthCharacters()
             throw new \Exception('コマンドの実行中にエラーが発生しました。');
         });
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth2.txt', $tester->getErrorOutput(true), '->renderException() wraps messages when they are bigger than the terminal');
         putenv('COLUMNS=120');
     }
@@ -755,14 +755,14 @@ public function testRenderExceptionEscapesLines()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_escapeslines.txt', $tester->getDisplay(true), '->renderException() escapes lines containing formatting');
         putenv('COLUMNS=120');
     }
 
     public function testRenderExceptionLineBreaks()
     {
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('getTerminalWidth'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['getTerminalWidth'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->any())
             ->method('getTerminalWidth')
@@ -772,7 +772,7 @@ public function testRenderExceptionLineBreaks()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_linebreaks.txt', $tester->getDisplay(true), '->renderException() keep multiple line breaks');
     }
 
@@ -785,7 +785,7 @@ public function testRenderExceptionStackTraceContainsRootException()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE]);
 
         $this->assertContains(sprintf('() at %s:', __FILE__), $tester->getDisplay());
     }
@@ -796,7 +796,7 @@ public function testRun()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
         $application->add($command = new \Foo1Command());
-        $_SERVER['argv'] = array('cli.php', 'foo:bar1');
+        $_SERVER['argv'] = ['cli.php', 'foo:bar1'];
 
         ob_start();
         $application->run();
@@ -812,63 +812,63 @@ public function testRun()
         $this->ensureStaticCommandHelp($application);
         $tester = new ApplicationTester($application);
 
-        $tester->run(array(), array('decorated' => false));
+        $tester->run([], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run1.txt', $tester->getDisplay(true), '->run() runs the list command if no argument is passed');
 
-        $tester->run(array('--help' => true), array('decorated' => false));
+        $tester->run(['--help' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run2.txt', $tester->getDisplay(true), '->run() runs the help command if --help is passed');
 
-        $tester->run(array('-h' => true), array('decorated' => false));
+        $tester->run(['-h' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run2.txt', $tester->getDisplay(true), '->run() runs the help command if -h is passed');
 
-        $tester->run(array('command' => 'list', '--help' => true), array('decorated' => false));
+        $tester->run(['command' => 'list', '--help' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run3.txt', $tester->getDisplay(true), '->run() displays the help if --help is passed');
 
-        $tester->run(array('command' => 'list', '-h' => true), array('decorated' => false));
+        $tester->run(['command' => 'list', '-h' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run3.txt', $tester->getDisplay(true), '->run() displays the help if -h is passed');
 
-        $tester->run(array('--ansi' => true));
+        $tester->run(['--ansi' => true]);
         $this->assertTrue($tester->getOutput()->isDecorated(), '->run() forces color output if --ansi is passed');
 
-        $tester->run(array('--no-ansi' => true));
+        $tester->run(['--no-ansi' => true]);
         $this->assertFalse($tester->getOutput()->isDecorated(), '->run() forces color output to be disabled if --no-ansi is passed');
 
-        $tester->run(array('--version' => true), array('decorated' => false));
+        $tester->run(['--version' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run4.txt', $tester->getDisplay(true), '->run() displays the program version if --version is passed');
 
-        $tester->run(array('-V' => true), array('decorated' => false));
+        $tester->run(['-V' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run4.txt', $tester->getDisplay(true), '->run() displays the program version if -v is passed');
 
-        $tester->run(array('command' => 'list', '--quiet' => true));
+        $tester->run(['command' => 'list', '--quiet' => true]);
         $this->assertSame('', $tester->getDisplay(), '->run() removes all output if --quiet is passed');
         $this->assertFalse($tester->getInput()->isInteractive(), '->run() sets off the interactive mode if --quiet is passed');
 
-        $tester->run(array('command' => 'list', '-q' => true));
+        $tester->run(['command' => 'list', '-q' => true]);
         $this->assertSame('', $tester->getDisplay(), '->run() removes all output if -q is passed');
         $this->assertFalse($tester->getInput()->isInteractive(), '->run() sets off the interactive mode if -q is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => true));
+        $tester->run(['command' => 'list', '--verbose' => true]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if --verbose is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 1));
+        $tester->run(['command' => 'list', '--verbose' => 1]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if --verbose=1 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 2));
+        $tester->run(['command' => 'list', '--verbose' => 2]);
         $this->assertSame(Output::VERBOSITY_VERY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to very verbose if --verbose=2 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 3));
+        $tester->run(['command' => 'list', '--verbose' => 3]);
         $this->assertSame(Output::VERBOSITY_DEBUG, $tester->getOutput()->getVerbosity(), '->run() sets the output to debug if --verbose=3 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 4));
+        $tester->run(['command' => 'list', '--verbose' => 4]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if unknown --verbose level is passed');
 
-        $tester->run(array('command' => 'list', '-v' => true));
+        $tester->run(['command' => 'list', '-v' => true]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
-        $tester->run(array('command' => 'list', '-vv' => true));
+        $tester->run(['command' => 'list', '-vv' => true]);
         $this->assertSame(Output::VERBOSITY_VERY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
-        $tester->run(array('command' => 'list', '-vvv' => true));
+        $tester->run(['command' => 'list', '-vvv' => true]);
         $this->assertSame(Output::VERBOSITY_DEBUG, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
         $application = new Application();
@@ -877,10 +877,10 @@ public function testRun()
         $application->add(new \FooCommand());
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo:bar', '--no-interaction' => true), array('decorated' => false));
+        $tester->run(['command' => 'foo:bar', '--no-interaction' => true], ['decorated' => false]);
         $this->assertSame('called'.PHP_EOL, $tester->getDisplay(), '->run() does not call interact() if --no-interaction is passed');
 
-        $tester->run(array('command' => 'foo:bar', '-n' => true), array('decorated' => false));
+        $tester->run(['command' => 'foo:bar', '-n' => true], ['decorated' => false]);
         $this->assertSame('called'.PHP_EOL, $tester->getDisplay(), '->run() does not call interact() if -n is passed');
     }
 
@@ -900,12 +900,12 @@ public function testVerboseValueNotBreakArguments()
 
         $output = new StreamOutput(fopen('php://memory', 'w', false));
 
-        $input = new ArgvInput(array('cli.php', '-v', 'foo:bar'));
+        $input = new ArgvInput(['cli.php', '-v', 'foo:bar']);
         $application->run($input, $output);
 
         $this->addToAssertionCount(1);
 
-        $input = new ArgvInput(array('cli.php', '--verbose', 'foo:bar'));
+        $input = new ArgvInput(['cli.php', '--verbose', 'foo:bar']);
         $application->run($input, $output);
 
         $this->addToAssertionCount(1);
@@ -915,13 +915,13 @@ public function testRunReturnsIntegerExitCode()
     {
         $exception = new \Exception('', 4);
 
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('doRun'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['doRun'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->once())
             ->method('doRun')
             ->willThrowException($exception);
 
-        $exitCode = $application->run(new ArrayInput(array()), new NullOutput());
+        $exitCode = $application->run(new ArrayInput([]), new NullOutput());
 
         $this->assertSame(4, $exitCode, '->run() returns integer exit code extracted from raised exception');
     }
@@ -945,7 +945,7 @@ public function testRunDispatchesIntegerExitCode()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'test'));
+        $tester->run(['command' => 'test']);
 
         $this->assertTrue($passedRightValue, '-> exit code 4 was passed in the console.terminate event');
     }
@@ -954,13 +954,13 @@ public function testRunReturnsExitCodeOneForExceptionCodeZero()
     {
         $exception = new \Exception('', 0);
 
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('doRun'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['doRun'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->once())
             ->method('doRun')
             ->willThrowException($exception);
 
-        $exitCode = $application->run(new ArrayInput(array()), new NullOutput());
+        $exitCode = $application->run(new ArrayInput([]), new NullOutput());
 
         $this->assertSame(1, $exitCode, '->run() returns exit code 1 when exception code is 0');
     }
@@ -984,7 +984,7 @@ public function testRunDispatchesExitCodeOneForExceptionCodeZero()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'test'));
+        $tester->run(['command' => 'test']);
 
         $this->assertTrue($passedRightValue, '-> exit code 1 was passed in the console.terminate event');
     }
@@ -1005,12 +1005,12 @@ public function testAddingOptionWithDuplicateShortcut()
 
         $application
             ->register('foo')
-            ->setAliases(array('f'))
-            ->setDefinition(array(new InputOption('survey', 'e', InputOption::VALUE_REQUIRED, 'My option with a shortcut.')))
+            ->setAliases(['f'])
+            ->setDefinition([new InputOption('survey', 'e', InputOption::VALUE_REQUIRED, 'My option with a shortcut.')])
             ->setCode(function (InputInterface $input, OutputInterface $output) {})
         ;
 
-        $input = new ArrayInput(array('command' => 'foo'));
+        $input = new ArrayInput(['command' => 'foo']);
         $output = new NullOutput();
 
         $application->run($input, $output);
@@ -1027,22 +1027,22 @@ public function testAddingAlreadySetDefinitionElementData($def)
         $application->setCatchExceptions(false);
         $application
             ->register('foo')
-            ->setDefinition(array($def))
+            ->setDefinition([$def])
             ->setCode(function (InputInterface $input, OutputInterface $output) {})
         ;
 
-        $input = new ArrayInput(array('command' => 'foo'));
+        $input = new ArrayInput(['command' => 'foo']);
         $output = new NullOutput();
         $application->run($input, $output);
     }
 
     public function getAddingAlreadySetDefinitionElementData()
     {
-        return array(
-            array(new InputArgument('command', InputArgument::REQUIRED)),
-            array(new InputOption('quiet', '', InputOption::VALUE_NONE)),
-            array(new InputOption('query', 'q', InputOption::VALUE_NONE)),
-        );
+        return [
+            [new InputArgument('command', InputArgument::REQUIRED)],
+            [new InputOption('quiet', '', InputOption::VALUE_NONE)],
+            [new InputOption('query', 'q', InputOption::VALUE_NONE)],
+        ];
     }
 
     public function testGetDefaultHelperSetReturnsDefaultValues()
@@ -1062,7 +1062,7 @@ public function testAddingSingleHelperSetOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $application->setHelperSet(new HelperSet([new FormatterHelper()]));
 
         $helperSet = $application->getHelperSet();
 
@@ -1079,7 +1079,7 @@ public function testOverwritingDefaultHelperSetOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $application->setHelperSet(new HelperSet([new FormatterHelper()]));
 
         $helperSet = $application->getHelperSet();
 
@@ -1137,7 +1137,7 @@ public function testSettingCustomInputDefinitionOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setDefinition(new InputDefinition(array(new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.'))));
+        $application->setDefinition(new InputDefinition([new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')]));
 
         $inputDefinition = $application->getDefinition();
 
@@ -1166,7 +1166,7 @@ public function testRunWithDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertEquals('before.foo.after.'.PHP_EOL, $tester->getDisplay());
     }
 
@@ -1186,7 +1186,7 @@ public function testRunWithExceptionAndDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
     }
 
     public function testRunDispatchesAllEventsWithException()
@@ -1202,7 +1202,7 @@ public function testRunDispatchesAllEventsWithException()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.foo.error.after.', $tester->getDisplay());
     }
 
@@ -1222,7 +1222,7 @@ public function testRunDispatchesAllEventsWithExceptionInListener()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.error.after.', $tester->getDisplay());
     }
 
@@ -1244,7 +1244,7 @@ public function testRunWithError()
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('Error expected.');
         } catch (\Error $e) {
             $this->assertSame('dymerr', $e->getMessage());
@@ -1273,7 +1273,7 @@ public function testRunAllowsErrorListenersToSilenceTheException()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.error.silenced.after.', $tester->getDisplay());
         $this->assertEquals(ConsoleCommandEvent::RETURN_CODE_DISABLED, $tester->getStatusCode());
     }
@@ -1292,7 +1292,7 @@ public function testConsoleErrorEventIsTriggeredOnCommandNotFound()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'unknown'));
+        $tester->run(['command' => 'unknown']);
         $this->assertContains('silenced command not found', $tester->getDisplay());
         $this->assertEquals(1, $tester->getStatusCode());
     }
@@ -1319,7 +1319,7 @@ public function testLegacyExceptionListenersAreStillTriggered()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.caught.error.after.', $tester->getDisplay());
         $this->assertContains('replaced in caught.', $tester->getDisplay());
     }
@@ -1341,7 +1341,7 @@ public function testErrorIsRethrownIfNotHandledByConsoleErrorEvent()
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('->run() should rethrow PHP errors if not handled via ConsoleErrorEvent.');
         } catch (\Error $e) {
             $this->assertSame($e->getMessage(), 'Class \'UnknownClass\' not found');
@@ -1367,7 +1367,7 @@ public function testRunWithErrorAndDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dym'));
+        $tester->run(['command' => 'dym']);
         $this->assertContains('before.dym.error.after.', $tester->getDisplay(), 'The PHP Error did not dispached events');
     }
 
@@ -1387,7 +1387,7 @@ public function testRunDispatchesAllEventsWithError()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dym'));
+        $tester->run(['command' => 'dym']);
         $this->assertContains('before.dym.error.after.', $tester->getDisplay(), 'The PHP Error did not dispached events');
     }
 
@@ -1407,7 +1407,7 @@ public function testRunWithErrorFailingStatusCode()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dus'));
+        $tester->run(['command' => 'dus']);
         $this->assertSame(1, $tester->getStatusCode(), 'Status code should be 1');
     }
 
@@ -1422,7 +1422,7 @@ public function testRunWithDispatcherSkippingCommand()
         });
 
         $tester = new ApplicationTester($application);
-        $exitCode = $tester->run(array('command' => 'foo'));
+        $exitCode = $tester->run(['command' => 'foo']);
         $this->assertContains('before.after.', $tester->getDisplay());
         $this->assertEquals(ConsoleCommandEvent::RETURN_CODE_DISABLED, $exitCode);
     }
@@ -1449,7 +1449,7 @@ public function testRunWithDispatcherAccessingInputOptions()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo', '--no-interaction' => true));
+        $tester->run(['command' => 'foo', '--no-interaction' => true]);
 
         $this->assertTrue($noInteractionValue);
         $this->assertFalse($quietValue);
@@ -1479,7 +1479,7 @@ public function testRunWithDispatcherAddingInputOptions()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo', '--extra' => 'some test value'));
+        $tester->run(['command' => 'foo', '--extra' => 'some test value']);
 
         $this->assertEquals('some test value', $extraValue);
     }
@@ -1499,7 +1499,7 @@ public function testTerminalDimensions()
         }
 
         $application->setTerminalDimensions($width, 80);
-        $this->assertSame(array($width, 80), $application->getTerminalDimensions());
+        $this->assertSame([$width, 80], $application->getTerminalDimensions());
     }
 
     public function testSetRunCustomDefaultCommand()
@@ -1512,14 +1512,14 @@ public function testSetRunCustomDefaultCommand()
         $application->setDefaultCommand($command->getName());
 
         $tester = new ApplicationTester($application);
-        $tester->run(array(), array('interactive' => false));
+        $tester->run([], ['interactive' => false]);
         $this->assertEquals('called'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
 
         $application = new CustomDefaultCommandApplication();
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array(), array('interactive' => false));
+        $tester->run([], ['interactive' => false]);
 
         $this->assertEquals('called'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
     }
@@ -1534,7 +1534,7 @@ public function testSetRunCustomDefaultCommandWithOption()
         $application->setDefaultCommand($command->getName());
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('--fooopt' => 'opt'), array('interactive' => false));
+        $tester->run(['--fooopt' => 'opt'], ['interactive' => false]);
 
         $this->assertEquals('called'.PHP_EOL.'opt'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
     }
@@ -1550,10 +1550,10 @@ public function testSetRunCustomSingleCommand()
 
         $tester = new ApplicationTester($application);
 
-        $tes
10000
ter->run(array());
+        $tester->run([]);
         $this->assertContains('called', $tester->getDisplay());
 
-        $tester->run(array('--help' => true));
+        $tester->run(['--help' => true]);
         $this->assertContains('The foo:bar command', $tester->getDisplay());
     }
 
@@ -1566,9 +1566,9 @@ public function testCanCheckIfTerminalIsInteractive()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'help'));
+        $tester->run(['command' => 'help']);
 
-        $this->assertFalse($tester->getInput()->hasParameterOption(array('--no-interaction', '-n')));
+        $this->assertFalse($tester->getInput()->hasParameterOption(['--no-interaction', '-n']));
 
         $inputStream = $tester->getInput()->getStream();
         $this->assertEquals($tester->getInput()->isInteractive(), @posix_isatty($inputStream));
@@ -1580,9 +1580,9 @@ public function testRunLazyCommandService()
         $container->addCompilerPass(new AddConsoleCommandPass());
         $container
             ->register('lazy-command', LazyCommand::class)
-            ->addTag('console.command', array('command' => 'lazy:command'))
-            ->addTag('console.command', array('command' => 'lazy:alias'))
-            ->addTag('console.command', array('command' => 'lazy:alias2'));
+            ->addTag('console.command', ['command' => 'lazy:command'])
+            ->addTag('console.command', ['command' => 'lazy:alias'])
+            ->addTag('console.command', ['command' => 'lazy:alias2']);
         $container->compile();
 
         $application = new Application();
@@ -1591,17 +1591,17 @@ public function testRunLazyCommandService()
 
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'lazy:command'));
+        $tester->run(['command' => 'lazy:command']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
-        $tester->run(array('command' => 'lazy:alias'));
+        $tester->run(['command' => 'lazy:alias']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
-        $tester->run(array('command' => 'lazy:alias2'));
+        $tester->run(['command' => 'lazy:alias2']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
         $command = $application->get('lazy:command');
-        $this->assertSame(array('lazy:alias', 'lazy:alias2'), $command->getAliases());
+        $this->assertSame(['lazy:alias', 'lazy:alias2'], $command->getAliases());
     }
 
     /**
@@ -1610,21 +1610,21 @@ public function testRunLazyCommandService()
     public function testGetDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $application->get('disabled');
     }
 
     public function testHasReturnsFalseForDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $this->assertFalse($application->has('disabled'));
     }
 
     public function testAllExcludesDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $this->assertArrayNotHasKey('disabled', $application->all());
     }
 
@@ -1670,7 +1670,7 @@ public function testErrorIsRethrownIfNotHandledByConsoleErrorEventWithCatchingEn
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('->run() should rethrow PHP errors if not handled via ConsoleErrorEvent.');
         } catch (\Error $e) {
             $this->assertSame($e->getMessage(), 'Class \'UnknownClass\' not found');
@@ -1694,7 +1694,7 @@ class CustomApplication extends Application
      */
     protected function getDefaultInputDefinition()
     {
-        return new InputDefinition(array(new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')));
+        return new InputDefinition([new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')]);
     }
 
     /**
@@ -1704,7 +1704,7 @@ protected function getDefaultInputDefinition()
      */
     protected function getDefaultHelperSet()
     {
-        return new HelperSet(array(new FormatterHelper()));
+        return new HelperSet([new FormatterHelper()]);
     }
 }
 
diff --git a/src/Symfony/Component/Console/Tests/Command/CommandTest.php b/src/Symfony/Component/Console/Tests/Command/CommandTest.php
index 09c89c416780..b3ce402209a8 100644
--- a/src/Symfony/Component/Console/Tests/Command/CommandTest.php
+++ b/src/Symfony/Component/Console/Tests/Command/CommandTest.php
@@ -71,7 +71,7 @@ public function testSetGetDefinition()
         $ret = $command->setDefinition($definition = new InputDefinition());
         $this->assertEquals($command, $ret, '->setDefinition() implements a fluent interface');
         $this->assertEquals($definition, $command->getDefinition(), '->setDefinition() sets the current InputDefinition instance');
-        $command->setDefinition(array(new InputArgument('foo'), new InputOption('bar')));
+        $command->setDefinition([new InputArgument('foo'), new InputOption('bar')]);
         $this->assertTrue($command->getDefinition()->hasArgument('foo'), '->setDefinition() also takes an array of InputArguments and InputOptions as an argument');
         $this->assertTrue($command->getDefinition()->hasOption('bar'), '->setDefinition() also takes an array of InputArguments and InputOptions as an argument');
         $command->setDefinition(new InputDefinition());
@@ -130,10 +130,10 @@ public function testInvalidCommandNames($name)
 
     public function provideInvalidCommandNames()
     {
-        return array(
-            array(''),
-            array('foo:'),
-        );
+        return [
+            [''],
+            ['foo:'],
+        ];
     }
 
     public function testGetSetDescription()
@@ -179,10 +179,10 @@ public function testGetProcessedHelp()
     public function testGetSetAliases()
     {
         $command = new \TestCommand();
-        $this->assertEquals(array('name'), $command->getAliases(), '->getAliases() returns the aliases');
-        $ret = $command->setAliases(array('name1'));
+        $this->assertEquals(['name'], $command->getAliases(), '->getAliases() returns the aliases');
+        $ret = $command->setAliases(['name1']);
         $this->assertEquals($command, $ret, '->setAliases() implements a fluent interface');
-        $this->assertEquals(array('name1'), $command->getAliases(), '->setAliases() sets the aliases');
+        $this->assertEquals(['name1'], $command->getAliases(), '->setAliases() sets the aliases');
     }
 
     public function testSetAliasesNull()
@@ -231,11 +231,11 @@ public function testGetHelperWithoutHelperSet()
     public function testMergeApplicationDefinition()
     {
         $application1 = new Application();
-        $application1->getDefinition()->addArguments(array(new InputArgument('foo')));
-        $application1->getDefinition()->addOptions(array(new InputOption('bar')));
+        $application1->getDefinition()->addArguments([new InputArgument('foo')]);
+        $application1->getDefinition()->addOptions([new InputOption('bar')]);
         $command = new \TestCommand();
         $command->setApplication($application1);
-        $command->setDefinition($definition = new InputDefinition(array(new InputArgument('bar'), new InputOption('foo'))));
+        $command->setDefinition($definition = new InputDefinition([new InputArgument('bar'), new InputOption('foo')]));
 
         $r = new \ReflectionObject($command);
         $m = $r->getMethod('mergeApplicationDefinition');
@@ -253,11 +253,11 @@ public function testMergeApplicationDefinition()
     public function testMergeApplicationDefinitionWithoutArgsThenWithArgsAddsArgs()
     {
         $application1 = new Application();
-        $application1->getDefinition()->addArguments(array(new InputArgument('foo')));
-        $application1->getDefinition()->addOptions(array(new InputOption('bar')));
+        $application1->getDefinition()->addArguments([new InputArgument('foo')]);
+        $application1->getDefinition()->addOptions([new InputOption('bar')]);
         $command = new \TestCommand();
         $command->setApplication($application1);
-        $command->setDefinition($definition = new InputDefinition(array()));
+        $command->setDefinition($definition = new InputDefinition([]));
 
         $r = new \ReflectionObject($command);
         $m = $r->getMethod('mergeApplicationDefinition');
@@ -277,7 +277,7 @@ public function testRunInteractive()
     {
         $tester = new CommandTester(new \TestCommand());
 
-        $tester->execute(array(), array('interactive' => true));
+        $tester->execute([], ['interactive' => true]);
 
         $this->assertEquals('interact called'.PHP_EOL.'execute called'.PHP_EOL, $tester->getDisplay(), '->run() calls the interact() method if the input is interactive');
     }
@@ -286,7 +286,7 @@ public function testRunNonInteractive()
     {
         $tester = new CommandTester(new \TestCommand());
 
-        $tester->execute(array(), array('interactive' => false));
+        $tester->execute([], ['interactive' => false]);
 
         $this->assertEquals('execute called'.PHP_EOL, $tester->getDisplay(), '->run() does not call the interact() method if the input is not interactive');
     }
@@ -309,7 +309,7 @@ public function testRunWithInvalidOption()
     {
         $command = new \TestCommand();
         $tester = new CommandTester($command);
-        $tester->execute(array('--bar' => true));
+        $tester->execute(['--bar' => true]);
     }
 
     public function testRunReturnsIntegerExitCode()
@@ -318,7 +318,7 @@ public function testRunReturnsIntegerExitCode()
         $exitCode = $command->run(new StringInput(''), new NullOutput());
         $this->assertSame(0, $exitCode, '->run() returns integer exit code (treats null as 0)');
 
-        $command = $this->getMockBuilder('TestCommand')->setMethods(array('execute'))->getMock();
+        $command = $this->getMockBuilder('TestCommand')->setMethods(['execute'])->getMock();
         $command->expects($this->once())
             ->method('execute')
             ->will($this->returnValue('2.3'));
@@ -364,16 +364,16 @@ public function testSetCode()
         });
         $this->assertEquals($command, $ret, '->setCode() implements a fluent interface');
         $tester = new CommandTester($command);
-        $tester->execute(array());
+        $tester->execute([]);
         $this->assertEquals('interact called'.PHP_EOL.'from the code...'.PHP_EOL, $tester->getDisplay());
     }
 
     public function getSetCodeBindToClosureTests()
     {
-        return array(
-            array(true, 'not bound to the command'),
-            array(false, 'bound to the command'),
-        );
+        return [
+            [true, 'not bound to the command'],
+            [false, 'bound to the command'],
+        ];
     }
 
     /**
@@ -389,7 +389,7 @@ public function testSetCodeBindToClosure($previouslyBound, $expected)
         $command = new \TestCommand();
         $command->setCode($code);
         $tester = new CommandTester($command);
-        $tester->execute(array());
+        $tester->execute([]);
         $this->assertEquals('interact called'.PHP_EOL.$expected.PHP_EOL, $tester->getDisplay());
     }
 
@@ -398,7 +398,7 @@ public function testSetCodeWithStaticClosure()
         $command = new \TestCommand();
         $command->setCode(self::createClosure());
         $tester = new CommandTester($command);
-        $tester->execute(array());
+        $tester->execute([]);
 
         if (\PHP_VERSION_ID < 70000) {
             // Cannot bind static closures in PHP 5
@@ -419,10 +419,10 @@ private static function createClosure()
     public function testSetCodeWithNonClosureCallable()
     {
         $command = new \TestCommand();
-        $ret = $command->setCode(array($this, 'callableMethodCommand'));
+        $ret = $command->setCode([$this, 'callableMethodCommand']);
         $this->assertEquals($command, $ret, '->setCode() implements a fluent interface');
         $tester = new CommandTester($command);
-        $tester->execute(array());
+        $tester->execute([]);
         $this->assertEquals('interact called'.PHP_EOL.'from the code...'.PHP_EOL, $tester->getDisplay());
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Command/HelpCommandTest.php b/src/Symfony/Component/Console/Tests/Command/HelpCommandTest.php
index 30fe2b6e7f8b..ce9d8d4fe4cc 100644
--- a/src/Symfony/Component/Console/Tests/Command/HelpCommandTest.php
+++ b/src/Symfony/Component/Console/Tests/Command/HelpCommandTest.php
@@ -24,7 +24,7 @@ public function testExecuteForCommandAlias()
         $command = new HelpCommand();
         $command->setApplication(new Application());
         $commandTester = new CommandTester($command);
-        $commandTester->execute(array('command_name' => 'li'), array('decorated' => false));
+        $commandTester->execute(['command_name' => 'li'], ['decorated' => false]);
         $this->assertContains('list [options] [--] [<namespace>]', $commandTester->getDisplay(), '->execute() returns a text help for the given command alias');
         $this->assertContains('format=FORMAT', $commandTester->getDisplay(), '->execute() returns a text help for the given command alias');
         $this->assertContains('raw', $commandTester->getDisplay(), '->execute() returns a text help for the given command alias');
@@ -35,7 +35,7 @@ public function testExecuteForCommand()
         $command = new HelpCommand();
         $commandTester = new CommandTester($command);
         $command->setCommand(new ListCommand());
-        $commandTester->execute(array(), array('decorated' => false));
+        $commandTester->execute([], ['decorated' => false]);
         $this->assertContains('list [options] [--] [<namespace>]', $commandTester->getDisplay(), '->execute() returns a text help for the given command');
         $this->assertContains('format=FORMAT', $commandTester->getDisplay(), '->execute() returns a text help for the given command');
         $this->assertContains('raw', $commandTester->getDisplay(), '->execute() returns a text help for the given command');
@@ -46,7 +46,7 @@ public function testExecuteForCommandWithXmlOption()
         $command = new HelpCommand();
         $commandTester = new CommandTester($command);
         $command->setCommand(new ListCommand());
-        $commandTester->execute(array('--format' => 'xml'));
+        $commandTester->execute(['--format' => 'xml']);
         $this->assertContains('<command', $commandTester->getDisplay(), '->execute() returns an XML help text if --xml is passed');
     }
 
@@ -54,7 +54,7 @@ public function testExecuteForApplicationCommand()
     {
         $application = new Application();
         $commandTester = new CommandTester($application->get('help'));
-        $commandTester->execute(array('command_name' => 'list'));
+        $commandTester->execute(['command_name' => 'list']);
         $this->assertContains('list [options] [--] [<namespace>]', $commandTester->getDisplay(), '->execute() returns a text help for the given command');
         $this->assertContains('format=FORMAT', $commandTester->getDisplay(), '->execute() returns a text help for the given command');
         $this->assertContains('raw', $commandTester->getDisplay(), '->execute() returns a text help for the given command');
@@ -64,7 +64,7 @@ public function testExecuteForApplicationCommandWithXmlOption()
     {
         $application = new Application();
         $commandTester = new CommandTester($application->get('help'));
-        $commandTester->execute(array('command_name' => 'list', '--format' => 'xml'));
+        $commandTester->execute(['command_name' => 'list', '--format' => 'xml']);
         $this->assertContains('list [--raw] [--format FORMAT] [--] [&lt;namespace&gt;]', $commandTester->getDisplay(), '->execute() returns a text help for the given command');
         $this->assertContains('<command', $commandTester->getDisplay(), '->execute() returns an XML help text if --format=xml is passed');
     }
diff --git a/src/Symfony/Component/Console/Tests/Command/ListCommandTest.php b/src/Symfony/Component/Console/Tests/Command/ListCommandTest.php
index b39f7ec5454e..57687d4c6034 100644
--- a/src/Symfony/Component/Console/Tests/Command/ListCommandTest.php
+++ b/src/Symfony/Component/Console/Tests/Command/ListCommandTest.php
@@ -21,7 +21,7 @@ public function testExecuteListsCommands()
     {
         $application = new Application();
         $commandTester = new CommandTester($command = $application->get('list'));
-        $commandTester->execute(array('command' => $command->getName()), array('decorated' => false));
+        $commandTester->execute(['command' => $command->getName()], ['decorated' => false]);
 
         $this->assertRegExp('/help\s{2,}Displays help for a command/', $commandTester->getDisplay(), '->execute() returns a list of available commands');
     }
@@ -30,7 +30,7 @@ public function testExecuteListsCommandsWithXmlOption()
     {
         $application = new Application();
         $commandTester = new CommandTester($command = $application->get('list'));
-        $commandTester->execute(array('command' => $command->getName(), '--format' => 'xml'));
+        $commandTester->execute(['command' => $command->getName(), '--format' => 'xml']);
         $this->assertRegExp('/<command id="list" name="list" hidden="0">/', $commandTester->getDisplay(), '->execute() returns a list of available commands in XML if --xml is passed');
     }
 
@@ -38,7 +38,7 @@ public function testExecuteListsCommandsWithRawOption()
     {
         $application = new Application();
         $commandTester = new CommandTester($command = $application->get('list'));
-        $commandTester->execute(array('command' => $command->getName(), '--raw' => true));
+        $commandTester->execute(['command' => $command->getName(), '--raw' => true]);
         $output = <<<'EOF'
 help   Displays help for a command
 list   Lists commands
@@ -54,7 +54,7 @@ public function testExecuteListsCommandsWithNamespaceArgument()
         $application = new Application();
         $application->add(new \FooCommand());
         $commandTester = new CommandTester($command = $application->get('list'));
-        $commandTester->execute(array('command' => $command->getName(), 'namespace' => 'foo', '--raw' => true));
+        $commandTester->execute(['command' => $command->getName(), 'namespace' => 'foo', '--raw' => true]);
         $output = <<<'EOF'
 foo:bar   The foo:bar command
 
@@ -69,7 +69,7 @@ public function testExecuteListsCommandsOrder()
         $application = new Application();
         $application->add(new \Foo6Command());
         $commandTester = new CommandTester($command = $application->get('list'));
-        $commandTester->execute(array('command' => $command->getName()), array('decorated' => false));
+        $commandTester->execute(['command' => $command->getName()], ['decorated' => false]);
         $output = <<<'EOF'
 Console Tool
 
@@ -101,7 +101,7 @@ public function testExecuteListsCommandsOrderRaw()
         $application = new Application();
         $application->add(new \Foo6Command());
         $commandTester = new CommandTester($command = $application->get('list'));
-        $commandTester->execute(array('command' => $command->getName(), '--raw' => true));
+        $commandTester->execute(['command' => $command->getName(), '--raw' => true]);
         $output = <<<'EOF'
 help       Displays help for a command
 list       Lists commands
diff --git a/src/Symfony/Component/Console/Tests/Command/LockableTraitTest.php b/src/Symfony/Component/Console/Tests/Command/LockableTraitTest.php
index a622d1b4895f..6a72706ee457 100644
--- a/src/Symfony/Component/Console/Tests/Command/LockableTraitTest.php
+++ b/src/Symfony/Component/Console/Tests/Command/LockableTraitTest.php
@@ -33,8 +33,8 @@ public function testLockIsReleased()
         $command = new \FooLockCommand();
 
         $tester = new CommandTester($command);
-        $this->assertSame(2, $tester->execute(array()));
-        $this->assertSame(2, $tester->execute(array()));
+        $this->assertSame(2, $tester->execute([]));
+        $this->assertSame(2, $tester->execute([]));
     }
 
     public function testLockReturnsFalseIfAlreadyLockedByAnotherCommand()
@@ -51,10 +51,10 @@ public function testLockReturnsFalseIfAlreadyLockedByAnotherCommand()
         $lock->acquire();
 
         $tester = new CommandTester($command);
-        $this->assertSame(1, $tester->execute(array()));
+        $this->assertSame(1, $tester->execute([]));
 
         $lock->release();
-        $this->assertSame(2, $tester->execute(array()));
+        $this->assertSame(2, $tester->execute([]));
     }
 
     public function testMultipleLockCallsThrowLogicException()
@@ -62,6 +62,6 @@ public function testMultipleLockCallsThrowLogicException()
         $command = new \FooLock2Command();
 
         $tester = new CommandTester($command);
-        $this->assertSame(1, $tester->execute(array()));
+        $this->assertSame(1, $tester->execute([]));
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/CommandLoader/ContainerCommandLoaderTest.php b/src/Symfony/Component/Console/Tests/CommandLoader/ContainerCommandLoaderTest.php
index 78eefd24f1b3..18d6e77bfba4 100644
--- a/src/Symfony/Component/Console/Tests/CommandLoader/ContainerCommandLoaderTest.php
+++ b/src/Symfony/Component/Console/Tests/CommandLoader/ContainerCommandLoaderTest.php
@@ -20,10 +20,10 @@ class ContainerCommandLoaderTest extends TestCase
 {
     public function testHas()
     {
-        $loader = new ContainerCommandLoader(new ServiceLocator(array(
+        $loader = new ContainerCommandLoader(new ServiceLocator([
             'foo-service' => function () { return new Command('foo'); },
             'bar-service' => function () { return new Command('bar'); },
-        )), array('foo' => 'foo-service', 'bar' => 'bar-service'));
+        ]), ['foo' => 'foo-service', 'bar' => 'bar-service']);
 
         $this->assertTrue($loader->has('foo'));
         $this->assertTrue($loader->has('bar'));
@@ -32,10 +32,10 @@ public function testHas()
 
     public function testGet()
     {
-        $loader = new ContainerCommandLoader(new ServiceLocator(array(
+        $loader = new ContainerCommandLoader(new ServiceLocator([
             'foo-service' => function () { return new Command('foo'); },
             'bar-service' => function () { return new Command('bar'); },
-        )), array('foo' => 'foo-service', 'bar' => 'bar-service'));
+        ]), ['foo' => 'foo-service', 'bar' => 'bar-service']);
 
         $this->assertInstanceOf(Command::class, $loader->get('foo'));
         $this->assertInstanceOf(Command::class, $loader->get('bar'));
@@ -46,16 +46,16 @@ public function testGet()
      */
     public function testGetUnknownCommandThrows()
     {
-        (new ContainerCommandLoader(new ServiceLocator(array()), array()))->get('unknown');
+        (new ContainerCommandLoader(new ServiceLocator([]), []))->get('unknown');
     }
 
     public function testGetCommandNames()
     {
-        $loader = new ContainerCommandLoader(new ServiceLocator(array(
+        $loader = new ContainerCommandLoader(new ServiceLocator([
             'foo-service' => function () { return new Command('foo'); },
             'bar-service' => function () { return new Command('bar'); },
-        )), array('foo' => 'foo-service', 'bar' => 'bar-service'));
+        ]), ['foo' => 'foo-service', 'bar' => 'bar-service']);
 
-        $this->assertSame(array('foo', 'bar'), $loader->getNames());
+        $this->assertSame(['foo', 'bar'], $loader->getNames());
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/CommandLoader/FactoryCommandLoaderTest.php b/src/Symfony/Component/Console/Tests/CommandLoader/FactoryCommandLoaderTest.php
index 5ee6cd1ec36f..7b9ec837e624 100644
--- a/src/Symfony/Component/Console/Tests/CommandLoader/FactoryCommandLoaderTest.php
+++ b/src/Symfony/Component/Console/Tests/CommandLoader/FactoryCommandLoaderTest.php
@@ -19,10 +19,10 @@ class FactoryCommandLoaderTest extends TestCase
 {
     public function testHas()
     {
-        $loader = new FactoryCommandLoader(array(
+        $loader = new FactoryCommandLoader([
             'foo' => function () { return new Command('foo'); },
             'bar' => function () { return new Command('bar'); },
-        ));
+        ]);
 
         $this->assertTrue($loader->has('foo'));
         $this->assertTrue($loader->has('bar'));
@@ -31,10 +31,10 @@ public function testHas()
 
     public function testGet()
     {
-        $loader = new FactoryCommandLoader(array(
+        $loader = new FactoryCommandLoader([
             'foo' => function () { return new Command('foo'); },
             'bar' => function () { return new Command('bar'); },
-        ));
+        ]);
 
         $this->assertInstanceOf(Command::class, $loader->get('foo'));
         $this->assertInstanceOf(Command::class, $loader->get('bar'));
@@ -45,16 +45,16 @@ public function testGet()
      */
     public function testGetUnknownCommandThrows()
     {
-        (new FactoryCommandLoader(array()))->get('unknown');
+        (new FactoryCommandLoader([]))->get('unknown');
     }
 
     public function testGetCommandNames()
     {
-        $loader = new FactoryCommandLoader(array(
+        $loader = new FactoryCommandLoader([
             'foo' => function () { return new Command('foo'); },
             'bar' => function () { return new Command('bar'); },
-        ));
+        ]);
 
-        $this->assertSame(array('foo', 'bar'), $loader->getNames());
+        $this->assertSame(['foo', 'bar'], $loader->getNames());
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/DependencyInjection/AddConsoleCommandPassTest.php b/src/Symfony/Component/Console/Tests/DependencyInjection/AddConsoleCommandPassTest.php
index 67fbb98643f1..b97d0a8f9199 100644
--- a/src/Symfony/Component/Console/Tests/DependencyInjection/AddConsoleCommandPassTest.php
+++ b/src/Symfony/Component/Console/Tests/DependencyInjection/AddConsoleCommandPassTest.php
@@ -54,7 +54,7 @@ public function testProcess($public)
         }
 
         $this->assertTrue($container->hasParameter('console.command.ids'));
-        $this->assertSame(array($alias => $id), $container->getParameter('console.command.ids'));
+        $this->assertSame([$alias => $id], $container->getParameter('console.command.ids'));
     }
 
     public function testProcessRegistersLazyCommands()
@@ -63,8 +63,8 @@ public function testProcessRegistersLazyCommands()
         $command = $container
             ->register('my-command', MyCommand::class)
             ->setPublic(false)
-            ->addTag('console.command', array('command' => 'my:command'))
-            ->addTag('console.command', array('command' => 'my:alias'))
+            ->addTag('console.command', ['command' => 'my:command'])
+            ->addTag('console.command', ['command' => 'my:alias'])
         ;
 
         (new AddConsoleCommandPass())->process($container);
@@ -73,11 +73,11 @@ public function testProcessRegistersLazyCommands()
         $commandLocator = $container->getDefinition((string) $commandLoader->getArgument(0));
 
         $this->assertSame(ContainerCommandLoader::class, $commandLoader->getClass());
-        $this->assertSame(array('my:command' => 'my-command', 'my:alias' => 'my-command'), $commandLoader->getArgument(1));
-        $this->assertEquals(array(array('my-command' => new ServiceClosureArgument(new TypedReference('my-command', MyCommand::class)))), $commandLocator->getArguments());
-        $this->assertSame(array('console.command.symfony_component_console_tests_dependencyinjection_mycommand' => 'my-command'), $container->getParameter('console.command.ids'));
-        $this->assertSame(array('my-command' => true), $container->getParameter('console.lazy_command.ids'));
-        $this->assertSame(array(array('setName', array('my:command')), array('setAliases', array(array('my:alias')))), $command->getMethodCalls());
+        $this->assertSame(['my:command' => 'my-command', 'my:alias' => 'my-command'], $commandLoader->getArgument(1));
+        $this->assertEquals([['my-command' => new ServiceClosureArgument(new TypedReference('my-command', MyCommand::class))]], $commandLocator->getArguments());
+        $this->assertSame(['console.command.symfony_component_console_tests_dependencyinjection_mycommand' => 'my-command'], $container->getParameter('console.command.ids'));
+        $this->assertSame(['my-command' => true], $container->getParameter('console.lazy_command.ids'));
+        $this->assertSame([['setName', ['my:command']], ['setAliases', [['my:alias']]]], $command->getMethodCalls());
     }
 
     public function testProcessFallsBackToDefaultName()
@@ -96,29 +96,29 @@ public function testProcessFallsBackToDefaultName()
         $commandLocator = $container->getDefinition((string) $commandLoader->getArgument(0));
 
         $this->assertSame(ContainerCommandLoader::class, $commandLoader->getClass());
-        $this->assertSame(array('default' => 'with-default-name'), $commandLoader->getArgument(1));
-        $this->assertEquals(array(array('with-default-name' => new ServiceClosureArgument(new TypedReference('with-default-name', NamedCommand::class)))), $commandLocator->getArguments());
-        $this->assertSame(array('console.command.symfony_component_console_tests_dependencyinjection_namedcommand' => 'with-default-name'), $container->getParameter('console.command.ids'));
-        $this->assertSame(array('with-default-name' => true), $container->getParameter('console.lazy_command.ids'));
+        $this->assertSame(['default' => 'with-default-name'], $commandLoader->getArgument(1));
+        $this->assertEquals([['with-default-name' => new ServiceClosureArgument(new TypedReference('with-default-name', NamedCommand::class))]], $commandLocator->getArguments());
+        $this->assertSame(['console.command.symfony_component_console_tests_dependencyinjection_namedcommand' => 'with-default-name'], $container->getParameter('console.command.ids'));
+        $this->assertSame(['with-default-name' => true], $container->getParameter('console.lazy_command.ids'));
 
         $container = new ContainerBuilder();
         $container
             ->register('with-default-name', NamedCommand::class)
             ->setPublic(false)
-            ->addTag('console.command', array('command' => 'new-name'))
+            ->addTag('console.command', ['command' => 'new-name'])
         ;
 
         $pass->process($container);
 
-        $this->assertSame(array('new-name' => 'with-default-name'), $container->getDefinition('console.command_loader')->getArgument(1));
+        $this->assertSame(['new-name' => 'with-default-name'], $container->getDefinition('console.command_loader')->getArgument(1));
     }
 
     public function visibilityProvider()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Tests/Descriptor/AbstractDescriptorTest.php b/src/Symfony/Component/Console/Tests/Descriptor/AbstractDescriptorTest.php
index 3686e7543b6b..320a4fb9f46b 100644
--- a/src/Symfony/Component/Console/Tests/Descriptor/AbstractDescriptorTest.php
+++ b/src/Symfony/Component/Console/Tests/Descriptor/AbstractDescriptorTest.php
@@ -89,19 +89,19 @@ abstract protected function getFormat();
 
     protected function getDescriptionTestData(array $objects)
     {
-        $data = array();
+        $data = [];
         foreach ($objects as $name => $object) {
             $description = file_get_contents(sprintf('%s/../Fixtures/%s.%s', __DIR__, $name, $this->getFormat()));
-            $data[] = array($object, $description);
+            $data[] = [$object, $description];
         }
 
         return $data;
     }
 
-    protected function assertDescription($expectedDescription, $describedObject, array $options = array())
+    protected function assertDescription($expectedDescription, $describedObject, array $options = [])
     {
         $output = new BufferedOutput(BufferedOutput::VERBOSITY_NORMAL, true);
-        $this->getDescriptor()->describe($output, $describedObject, $options + array('raw_output' => true));
+        $this->getDescriptor()->describe($output, $describedObject, $options + ['raw_output' => true]);
         $this->assertEquals(trim($expectedDescription), trim(str_replace(PHP_EOL, "\n", $output->fetch())));
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Descriptor/JsonDescriptorTest.php b/src/Symfony/Component/Console/Tests/Descriptor/JsonDescriptorTest.php
index dffcaf6648ce..fb596b8d7ada 100644
--- a/src/Symfony/Component/Console/Tests/Descriptor/JsonDescriptorTest.php
+++ b/src/Symfony/Component/Console/Tests/Descriptor/JsonDescriptorTest.php
@@ -26,10 +26,10 @@ protected function getFormat()
         return 'json';
     }
 
-    protected function assertDescription($expectedDescription, $describedObject, array $options = array())
+    protected function assertDescription($expectedDescription, $describedObject, array $options = [])
     {
         $output = new BufferedOutput(BufferedOutput::VERBOSITY_NORMAL, true);
-        $this->getDescriptor()->describe($output, $describedObject, $options + array('raw_output' => true));
+        $this->getDescriptor()->describe($output, $describedObject, $options + ['raw_output' => true]);
         $this->assertEquals(json_decode(trim($expectedDescription), true), json_decode(trim(str_replace(PHP_EOL, "\n", $output->fetch())), true));
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Descriptor/MarkdownDescriptorTest.php b/src/Symfony/Component/Console/Tests/Descriptor/MarkdownDescriptorTest.php
index eb80f58b1cc5..a8f11cb4aeb4 100644
--- a/src/Symfony/Component/Console/Tests/Descriptor/MarkdownDescriptorTest.php
+++ b/src/Symfony/Component/Console/Tests/Descriptor/MarkdownDescriptorTest.php
@@ -21,7 +21,7 @@ public function getDescribeCommandTestData()
     {
         return $this->getDescriptionTestData(array_merge(
             ObjectsProvider::getCommands(),
-            array('command_mbstring' => new DescriptorCommandMbString())
+            ['command_mbstring' => new DescriptorCommandMbString()]
         ));
     }
 
@@ -29,7 +29,7 @@ public function getDescribeApplicationTestData()
     {
         return $this->getDescriptionTestData(array_merge(
             ObjectsProvider::getApplications(),
-            array('application_mbstring' => new DescriptorApplicationMbString())
+            ['application_mbstring' => new DescriptorApplicationMbString()]
         ));
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Descriptor/ObjectsProvider.php b/src/Symfony/Component/Console/Tests/Descriptor/ObjectsProvider.php
index b4f34ada19ec..d46d6f18baad 100644
--- a/src/Symfony/Component/Console/Tests/Descriptor/ObjectsProvider.php
+++ b/src/Symfony/Component/Console/Tests/Descriptor/ObjectsProvider.php
@@ -26,57 +26,57 @@ class ObjectsProvider
 {
     public static function getInputArguments()
     {
-        return array(
+        return [
             'input_argument_1' => new InputArgument('argument_name', InputArgument::REQUIRED),
             'input_argument_2' => new InputArgument('argument_name', InputArgument::IS_ARRAY, 'argument description'),
             'input_argument_3' => new InputArgument('argument_name', InputArgument::OPTIONAL, 'argument description', 'default_value'),
             'input_argument_4' => new InputArgument('argument_name', InputArgument::REQUIRED, "multiline\nargument description"),
             'input_argument_with_style' => new InputArgument('argument_name', InputArgument::OPTIONAL, 'argument description', '<comment>style</>'),
             'input_argument_with_default_inf_value' => new InputArgument('argument_name', InputArgument::OPTIONAL, 'argument description', INF),
-        );
+        ];
     }
 
     public static function getInputOptions()
     {
-        return array(
+        return [
             'input_option_1' => new InputOption('option_name', 'o', InputOption::VALUE_NONE),
             'input_option_2' => new InputOption('option_name', 'o', InputOption::VALUE_OPTIONAL, 'option description', 'default_value'),
             'input_option_3' => new InputOption('option_name', 'o', InputOption::VALUE_REQUIRED, 'option description'),
-            'input_option_4' => new InputOption('option_name', 'o', InputOption::VALUE_IS_ARRAY | InputOption::VALUE_OPTIONAL, 'option description', array()),
+            'input_option_4' => new InputOption('option_name', 'o', InputOption::VALUE_IS_ARRAY | InputOption::VALUE_OPTIONAL, 'option description', []),
             'input_option_5' => new InputOption('option_name', 'o', InputOption::VALUE_REQUIRED, "multiline\noption description"),
-            'input_option_6' => new InputOption('option_name', array('o', 'O'), InputOption::VALUE_REQUIRED, 'option with multiple shortcuts'),
+            'input_option_6' => new InputOption('option_name', ['o', 'O'], InputOption::VALUE_REQUIRED, 'option with multiple shortcuts'),
             'input_option_with_style' => new InputOption('option_name', 'o', InputOption::VALUE_REQUIRED, 'option description', '<comment>style</>'),
-            'input_option_with_style_array' => new InputOption('option_name', 'o', InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'option description', array('<comment>Hello</comment>', '<info>world</info>')),
+            'input_option_with_style_array' => new InputOption('option_name', 'o', InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'option description', ['<comment>Hello</comment>', '<info>world</info>']),
             'input_option_with_default_inf_value' => new InputOption('option_name', 'o', InputOption::VALUE_OPTIONAL, 'option description', INF),
-        );
+        ];
     }
 
     public static function getInputDefinitions()
     {
-        return array(
+        return [
             'input_definition_1' => new InputDefinition(),
-            'input_definition_2' => new InputDefinition(array(new InputArgument('argument_name', InputArgument::REQUIRED))),
-            'input_definition_3' => new InputDefinition(array(new InputOption('option_name', 'o', InputOption::VALUE_NONE))),
-            'input_definition_4' => new InputDefinition(array(
+            'input_definition_2' => new InputDefinition([new InputArgument('argument_name', InputArgument::REQUIRED)]),
+            'input_definition_3' => new InputDefinition([new InputOption('option_name', 'o', InputOption::VALUE_NONE)]),
+            'input_definition_4' => new InputDefinition([
                 new InputArgument('argument_name', InputArgument::REQUIRED),
                 new InputOption('option_name', 'o', InputOption::VALUE_NONE),
-            )),
-        );
+            ]),
+        ];
     }
 
     public static function getCommands()
     {
-        return array(
+        return [
             'command_1' => new DescriptorCommand1(),
             'command_2' => new DescriptorCommand2(),
-        );
+        ];
     }
 
     public static function getApplications()
     {
-        return array(
+        return [
             'application_1' => new DescriptorApplication1(),
             'application_2' => new DescriptorApplication2(),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Descriptor/TextDescriptorTest.php b/src/Symfony/Component/Console/Tests/Descriptor/TextDescriptorTest.php
index c024a522efad..26bbd907a73d 100644
--- a/src/Symfony/Component/Console/Tests/Descriptor/TextDescriptorTest.php
+++ b/src/Symfony/Component/Console/Tests/Descriptor/TextDescriptorTest.php
@@ -22,7 +22,7 @@ public function getDescribeCommandTestData()
     {
         return $this->getDescriptionTestData(array_merge(
             ObjectsProvider::getCommands(),
-            array('command_mbstring' => new DescriptorCommandMbString())
+            ['command_mbstring' => new DescriptorCommandMbString()]
         ));
     }
 
@@ -30,7 +30,7 @@ public function getDescribeApplicationTestData()
     {
         return $this->getDescriptionTestData(array_merge(
             ObjectsProvider::getApplications(),
-            array('application_mbstring' => new DescriptorApplicationMbString())
+            ['application_mbstring' => new DescriptorApplicationMbString()]
         ));
     }
 
@@ -38,7 +38,7 @@ public function testDescribeApplicationWithFilteredNamespace()
     {
         $application = new DescriptorApplication2();
 
-        $this->assertDescription(file_get_contents(__DIR__.'/../Fixtures/application_filtered_namespace.txt'), $application, array('namespace' => 'command4'));
+        $this->assertDescription(file_get_contents(__DIR__.'/../Fixtures/application_filtered_namespace.txt'), $application, ['namespace' => 'command4']);
     }
 
     protected function getDescriptor()
diff --git a/src/Symfony/Component/Console/Tests/EventListener/ErrorListenerTest.php b/src/Symfony/Component/Console/Tests/EventListener/ErrorListenerTest.php
index b3f3fb4546d8..39766db3d805 100644
--- a/src/Symfony/Component/Console/Tests/EventListener/ErrorListenerTest.php
+++ b/src/Symfony/Component/Console/Tests/EventListener/ErrorListenerTest.php
@@ -34,11 +34,11 @@ public function testOnConsoleError()
         $logger
             ->expects($this->once())
             ->method('error')
-            ->with('Error thrown while running command "{command}". Message: "{message}"', array('exception' => $error, 'command' => 'test:run --foo=baz buzz', 'message' => 'An error occurred'))
+            ->with('Error thrown while running command "{command}". Message: "{message}"', ['exception' => $error, 'command' => 'test:run --foo=baz buzz', 'message' => 'An error occurred'])
         ;
 
         $listener = new ErrorListener($logger);
-        $listener->onConsoleError(new ConsoleErrorEvent(new ArgvInput(array('console.php', 'test:run', '--foo=baz', 'buzz')), $this->getOutput(), $error, new Command('test:run')));
+        $listener->onConsoleError(new ConsoleErrorEvent(new ArgvInput(['console.php', 'test:run', '--foo=baz', 'buzz']), $this->getOutput(), $error, new Command('test:run')));
     }
 
     public function testOnConsoleErrorWithNoCommandAndNoInputString()
@@ -49,7 +49,7 @@ public function testOnConsoleErrorWithNoCommandAndNoInputString()
         $logger
             ->expects($this->once())
             ->method('error')
-            ->with('An error occurred while using the console. Message: "{message}"', array('exception' => $error, 'message' => 'An error occurred'))
+            ->with('An error occurred while using the console. Message: "{message}"', ['exception' => $error, 'message' => 'An error occurred'])
         ;
 
         $listener = new ErrorListener($logger);
@@ -62,11 +62,11 @@ public function testOnConsoleTerminateForNonZeroExitCodeWritesToLog()
         $logger
             ->expects($this->once())
             ->method('debug')
-            ->with('Command "{command}" exited with code "{code}"', array('command' => 'test:run', 'code' => 255))
+            ->with('Command "{command}" exited with code "{code}"', ['command' => 'test:run', 'code' => 255])
         ;
 
         $listener = new ErrorListener($logger);
-        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(array('console.php', 'test:run')), 255));
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(['console.php', 'test:run']), 255));
     }
 
     public function testOnConsoleTerminateForZeroExitCodeDoesNotWriteToLog()
@@ -78,16 +78,16 @@ public function testOnConsoleTerminateForZeroExitCodeDoesNotWriteToLog()
         ;
 
         $listener = new ErrorListener($logger);
-        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(array('console.php', 'test:run')), 0));
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(['console.php', 'test:run']), 0));
     }
 
     public function testGetSubscribedEvents()
     {
         $this->assertEquals(
-            array(
-                'console.error' => array('onConsoleError', -128),
-                'console.terminate' => array('onConsoleTerminate', -128),
-            ),
+            [
+                'console.error' => ['onConsoleError', -128],
+                'console.terminate' => ['onConsoleTerminate', -128],
+            ],
             ErrorListener::getSubscribedEvents()
         );
     }
@@ -98,12 +98,12 @@ public function testAllKindsOfInputCanBeLogged()
         $logger
             ->expects($this->exactly(3))
             ->method('debug')
-            ->with('Command "{command}" exited with code "{code}"', array('command' => 'test:run --foo=bar', 'code' => 255))
+            ->with('Command "{command}" exited with code "{code}"', ['command' => 'test:run --foo=bar', 'code' => 255])
         ;
 
         $listener = new ErrorListener($logger);
-        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(array('console.php', 'test:run', '--foo=bar')), 255));
-        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArrayInput(array('name' => 'test:run', '--foo' => 'bar')), 255));
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArgvInput(['console.php', 'test:run', '--foo=bar']), 255));
+        $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new ArrayInput(['name' => 'test:run', '--foo' => 'bar']), 255));
         $listener->onConsoleTerminate($this->getConsoleTerminateEvent(new StringInput('test:run --foo=bar'), 255));
     }
 
@@ -113,7 +113,7 @@ public function testCommandNameIsDisplayedForNonStringableInput()
         $logger
             ->expects($this->once())
             ->method('debug')
-            ->with('Command "{command}" exited with code "{code}"', array('command' => 'test:run', 'code' => 255))
+            ->with('Command "{command}" exited with code "{code}"', ['command' => 'test:run', 'code' => 255])
         ;
 
         $listener = new ErrorListener($logger);
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/DescriptorCommand1.php b/src/Symfony/Component/Console/Tests/Fixtures/DescriptorCommand1.php
index ede05d7a73c0..14bb20486e8d 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/DescriptorCommand1.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/DescriptorCommand1.php
@@ -19,7 +19,7 @@ protected function configure()
     {
         $this
             ->setName('descriptor:command1')
-            ->setAliases(array('alias1', 'alias2'))
+            ->setAliases(['alias1', 'alias2'])
             ->setDescription('command 1 description')
             ->setHelp('command 1 help')
         ;
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/DescriptorCommand4.php b/src/Symfony/Component/Console/Tests/Fixtures/DescriptorCommand4.php
index 13e8e5ba049f..22dcae0e3c10 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/DescriptorCommand4.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/DescriptorCommand4.php
@@ -19,7 +19,7 @@ protected function configure()
     {
         $this
             ->setName('descriptor:command4')
-            ->setAliases(array('descriptor:alias_command4', 'command4:descriptor'))
+            ->setAliases(['descriptor:alias_command4', 'command4:descriptor'])
         ;
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/DummyOutput.php b/src/Symfony/Component/Console/Tests/Fixtures/DummyOutput.php
index 866e21437177..e9cf6ce7dae8 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/DummyOutput.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/DummyOutput.php
@@ -25,7 +25,7 @@ class DummyOutput extends BufferedOutput
      */
     public function getLogs()
     {
-        $logs = array();
+        $logs = [];
         foreach (explode(PHP_EOL, trim($this->fetch())) as $message) {
             preg_match('/^\[(.*)\] (.*)/', $message, $matches);
             $logs[] = sprintf('%s %s', $matches[1], $matches[2]);
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Foo1Command.php b/src/Symfony/Component/Console/Tests/Fixtures/Foo1Command.php
index 254162f320dd..6069576d1540 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Foo1Command.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Foo1Command.php
@@ -14,7 +14,7 @@ protected function configure()
         $this
             ->setName('foo:bar1')
             ->setDescription('The foo:bar1 command')
-            ->setAliases(array('afoobar1'))
+            ->setAliases(['afoobar1'])
         ;
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Foo2Command.php b/src/Symfony/Component/Console/Tests/Fixtures/Foo2Command.php
index 8071dc8fb3d8..0d9884013ebd 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Foo2Command.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Foo2Command.php
@@ -11,7 +11,7 @@ protected function configure()
         $this
             ->setName('foo1:bar')
             ->setDescription('The foo1:bar command')
-            ->setAliases(array('afoobar2'))
+            ->setAliases(['afoobar2'])
         ;
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/FooCommand.php b/src/Symfony/Component/Console/Tests/Fixtures/FooCommand.php
index 355e0ad6d63f..314460044789 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/FooCommand.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/FooCommand.php
@@ -14,7 +14,7 @@ protected function configure()
         $this
             ->setName('foo:bar')
             ->setDescription('The foo:bar command')
-            ->setAliases(array('afoobar'))
+            ->setAliases(['afoobar'])
         ;
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/FooOptCommand.php b/src/Symfony/Component/Console/Tests/Fixtures/FooOptCommand.php
index 9043aa483c20..c9054671f94c 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/FooOptCommand.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/FooOptCommand.php
@@ -15,7 +15,7 @@ protected function configure()
         $this
             ->setName('foo:bar')
             ->setDescription('The foo:bar command')
-            ->setAliases(array('afoobar'))
+            ->setAliases(['afoobar'])
             ->addOption('fooopt', 'fo', InputOption::VALUE_OPTIONAL, 'fooopt description')
         ;
     }
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/FooSubnamespaced1Command.php b/src/Symfony/Component/Console/Tests/Fixtures/FooSubnamespaced1Command.php
index fc50c72bfcf8..95a4e6152484 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/FooSubnamespaced1Command.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/FooSubnamespaced1Command.php
@@ -14,7 +14,7 @@ protected function configure()
         $this
             ->setName('foo:bar:baz')
             ->setDescription('The foo:bar:baz command')
-            ->setAliases(array('foobarbaz'))
+            ->setAliases(['foobarbaz'])
         ;
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/FooSubnamespaced2Command.php b/src/Symfony/Component/Console/Tests/Fixtures/FooSubnamespaced2Command.php
index 1cf31ff110c9..08c5ff725fe0 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/FooSubnamespaced2Command.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/FooSubnamespaced2Command.php
@@ -14,7 +14,7 @@ protected function configure()
         $this
             ->setName('foo:go:bret')
             ->setDescription('The foo:bar:go command')
-            ->setAliases(array('foobargo'))
+            ->setAliases(['foobargo'])
         ;
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_4.php b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_4.php
index 0c5d3fb26cef..b2f3d99546af 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_4.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_4.php
@@ -20,12 +20,12 @@
 
     //Ensure edge case by appending empty strings to history:
     $output->write('Lorem ipsum dolor sit amet');
-    $output->write(array('', '', ''));
+    $output->write(['', '', '']);
     $output->title('Fourth title');
 
     //Ensure have manual control over number of blank lines:
     $output->writeln('Lorem ipsum dolor sit amet');
-    $output->writeln(array('', '')); //Should append an extra blank line
+    $output->writeln(['', '']); //Should append an extra blank line
     $output->title('Fifth title');
 
     $output->writeln('Lorem ipsum dolor sit amet');
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_5.php b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_5.php
index 96433ed5b32d..6fba5737fce3 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_5.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_5.php
@@ -9,29 +9,29 @@
     $output = new SymfonyStyle($input, $output);
 
     $output->writeln('Lorem ipsum dolor sit amet');
-    $output->listing(array(
+    $output->listing([
         'Lorem ipsum dolor sit amet',
         'consectetur adipiscing elit',
-    ));
+    ]);
 
     //Even using write:
     $output->write('Lorem ipsum dolor sit amet');
-    $output->listing(array(
+    $output->listing([
         'Lorem ipsum dolor sit amet',
         'consectetur adipiscing elit',
-    ));
+    ]);
 
     $output->write('Lorem ipsum dolor sit amet');
-    $output->text(array(
+    $output->text([
         'Lorem ipsum dolor sit amet',
         'consectetur adipiscing elit',
-    ));
+    ]);
 
     $output->newLine();
 
     $output->write('Lorem ipsum dolor sit amet');
-    $output->comment(array(
+    $output->comment([
         'Lorem ipsum dolor sit amet',
         'consectetur adipiscing elit',
-    ));
+    ]);
 };
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_6.php b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_6.php
index 8031ec9c30e5..3278f6ea05b1 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_6.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_6.php
@@ -8,9 +8,9 @@
 return function (InputInterface $input, OutputInterface $output) {
     $output = new SymfonyStyle($input, $output);
 
-    $output->listing(array(
+    $output->listing([
         'Lorem ipsum dolor sit amet',
         'consectetur adipiscing elit',
-    ));
+    ]);
     $output->success('Lorem ipsum dolor sit amet');
 };
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_7.php b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_7.php
index 203eb5b12e6b..037c6ab6b3fe 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_7.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_7.php
@@ -9,7 +9,7 @@
     $output = new SymfonyStyle($input, $output);
     $output->title('Title');
     $output->askHidden('Hidden question');
-    $output->choice('Choice question with default', array('choice1', 'choice2'), 'choice1');
+    $output->choice('Choice question with default', ['choice1', 'choice2'], 'choice1');
     $output->confirm('Confirmation with yes default', true);
     $output->text('Duis aute irure dolor in reprehenderit in voluptate velit esse');
 };
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_8.php b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_8.php
index 16b26b523f2d..fe9d484d252b 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_8.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_8.php
@@ -7,19 +7,19 @@
 
 //Ensure formatting tables when using multiple headers with TableCell
 return function (InputInterface $input, OutputInterface $output) {
-    $headers = array(
-        array(new TableCell('Main table title', array('colspan' => 3))),
-        array('ISBN', 'Title', 'Author'),
-    );
+    $headers = [
+        [new TableCell('Main table title', ['colspan' => 3])],
+        ['ISBN', 'Title', 'Author'],
+    ];
 
-    $rows = array(
-        array(
+    $rows = [
+        [
             '978-0521567817',
             'De Monarchia',
-            new TableCell("Dante Alighieri\nspans multiple rows", array('rowspan' => 2)),
-        ),
-        array('978-0804169127', 'Divine Comedy'),
-    );
+            new TableCell("Dante Alighieri\nspans multiple rows", ['rowspan' => 2]),
+        ],
+        ['978-0804169127', 'Divine Comedy'],
+    ];
 
     $output = new SymfonyStyle($input, $output);
     $output->table($headers, $rows);
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_9.php b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_9.php
index 57afdf06b43f..73af4ae1e261 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_9.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_9.php
@@ -7,5 +7,5 @@
 //Ensure that all lines are aligned to the begin of the first line in a multi-line block
 return function (InputInterface $input, OutputInterface $output) {
     $output = new SymfonyStyle($input, $output);
-    $output->block(array('Custom block', 'Second custom block line'), 'CUSTOM', 'fg=white;bg=green', 'X ', true);
+    $output->block(['Custom block', 'Second custom block line'], 'CUSTOM', 'fg=white;bg=green', 'X ', true);
 };
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/TestCommand.php b/src/Symfony/Component/Console/Tests/Fixtures/TestCommand.php
index dcd32739c4c3..eb7ccb33f6ca 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/TestCommand.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/TestCommand.php
@@ -10,7 +10,7 @@ protected function configure()
     {
         $this
             ->setName('namespace:name')
-            ->setAliases(array('name'))
+            ->setAliases(['name'])
             ->setDescription('description')
             ->setHelp('help')
         ;
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/TestToto.php b/src/Symfony/Component/Console/Tests/Fixtures/TestToto.php
index f14805db68e6..2e6a8195938b 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/TestToto.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/TestToto.php
@@ -11,7 +11,7 @@ protected function configure()
         $this
             ->setName('test-toto')
             ->setDescription('The test-toto command')
-            ->setAliases(array('test'))
+            ->setAliases(['test'])
         ;
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterStyleTest.php b/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterStyleTest.php
index ddf77902c90e..d47760fe4e3e 100644
--- a/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterStyleTest.php
+++ b/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterStyleTest.php
@@ -18,10 +18,10 @@ class OutputFormatterStyleTest extends TestCase
 {
     public function testConstructor()
     {
-        $style = new OutputFormatterStyle('green', 'black', array('bold', 'underscore'));
+        $style = new OutputFormatterStyle('green', 'black', ['bold', 'underscore']);
         $this->assertEquals("\033[32;40;1;4mfoo\033[39;49;22;24m", $style->apply('foo'));
 
-        $style = new OutputFormatterStyle('red', null, array('blink'));
+        $style = new OutputFormatterStyle('red', null, ['blink']);
         $this->assertEquals("\033[31;5mfoo\033[39;25m", $style->apply('foo'));
 
         $style = new OutputFormatterStyle(null, 'white');
@@ -66,7 +66,7 @@ public function testOptions()
     {
         $style = new OutputFormatterStyle();
 
-        $style->setOptions(array('reverse', 'conceal'));
+        $style->setOptions(['reverse', 'conceal']);
         $this->assertEquals("\033[7;8mfoo\033[27;28m", $style->apply('foo'));
 
         $style->setOption('bold');
@@ -78,7 +78,7 @@ public function testOptions()
         $style->setOption('bold');
         $this->assertEquals("\033[8;1mfoo\033[28;22m", $style->apply('foo'));
 
-        $style->setOptions(array('bold'));
+        $style->setOptions(['bold']);
         $this->assertEquals("\033[1mfoo\033[22m", $style->apply('foo'));
 
         try {
diff --git a/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php b/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
index 4b715c680d3d..c5c2daed25d9 100644
--- a/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
+++ b/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
@@ -184,16 +184,16 @@ public function testInlineStyleOptions($tag, $expected = null, $input = null)
 
     public function provideInlineStyleOptionsCases()
     {
-        return array(
-            array('<unknown=_unknown_>'),
-            array('<unknown=_unknown_;a=1;b>'),
-            array('<fg=green;>', "\033[32m[test]\033[39m", '[test]'),
-            array('<fg=green;bg=blue;>', "\033[32;44ma\033[39;49m", 'a'),
-            array('<fg=green;options=bold>', "\033[32;1mb\033[39;22m", 'b'),
-            array('<fg=green;options=reverse;>', "\033[32;7m<a>\033[39;27m", '<a>'),
-            array('<fg=green;options=bold,underscore>', "\033[32;1;4mz\033[39;22;24m", 'z'),
-            array('<fg=green;options=bold,underscore,reverse;>', "\033[32;1;4;7md\033[39;22;24;27m", 'd'),
-        );
+        return [
+            ['<unknown=_unknown_>'],
+            ['<unknown=_unknown_;a=1;b>'],
+            ['<fg=green;>', "\033[32m[test]\033[39m", '[test]'],
+            ['<fg=green;bg=blue;>', "\033[32;44ma\033[39;49m", 'a'],
+            ['<fg=green;options=bold>', "\033[32;1mb\033[39;22m", 'b'],
+            ['<fg=green;options=reverse;>', "\033[32;7m<a>\033[39;27m", '<a>'],
+            ['<fg=green;options=bold,underscore>', "\033[32;1;4mz\033[39;22;24m", 'z'],
+            ['<fg=green;options=bold,underscore,reverse;>', "\033[32;1;4;7md\033[39;22;24;27m", 'd'],
+        ];
     }
 
     /**
@@ -209,12 +209,12 @@ public function testInlineStyleOptionsUnknownAreDeprecated($tag, $option)
 
     public function provideInlineStyleTagsWithUnknownOptions()
     {
-        return array(
-            array('<options=abc;>', 'abc'),
-            array('<options=abc,def;>', 'abc'),
-            array('<fg=green;options=xyz;>', 'xyz'),
-            array('<fg=green;options=efg,abc>', 'efg'),
-        );
+        return [
+            ['<options=abc;>', 'abc'],
+            ['<options=abc,def;>', 'abc'],
+            ['<fg=green;options=xyz;>', 'xyz'],
+            ['<fg=green;options=efg,abc>', 'efg'],
+        ];
     }
 
     public function testNonStyleTag()
diff --git a/src/Symfony/Component/Console/Tests/Helper/FormatterHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/FormatterHelperTest.php
index f5d891a1a3ac..934e11ac1b0a 100644
--- a/src/Symfony/Component/Console/Tests/Helper/FormatterHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/FormatterHelperTest.php
@@ -40,7 +40,7 @@ public function testFormatBlock()
         $this->assertEquals(
             '<error> Some text to display </error>'."\n".
             '<error> foo bar              </error>',
-            $formatter->formatBlock(array('Some text to display', 'foo bar'), 'error'),
+            $formatter->formatBlock(['Some text to display', 'foo bar'], 'error'),
             '::formatBlock() formats a message in a block'
         );
 
diff --git a/src/Symfony/Component/Console/Tests/Helper/HelperSetTest.php b/src/Symfony/Component/Console/Tests/Helper/HelperSetTest.php
index 0fdb2cefbe42..826bc51dcd62 100644
--- a/src/Symfony/Component/Console/Tests/Helper/HelperSetTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/HelperSetTest.php
@@ -20,7 +20,7 @@ class HelperSetTest extends TestCase
   
10000
  public function testConstructor()
     {
         $mock_helper = $this->getGenericMockHelper('fake_helper');
-        $helperset = new HelperSet(array('fake_helper_alias' => $mock_helper));
+        $helperset = new HelperSet(['fake_helper_alias' => $mock_helper]);
 
         $this->assertEquals($mock_helper, $helperset->get('fake_helper_alias'), '__construct sets given helper to helpers');
         $this->assertTrue($helperset->has('fake_helper_alias'), '__construct sets helper alias for given helper');
@@ -46,7 +46,7 @@ public function testSet()
 
     public function testHas()
     {
-        $helperset = new HelperSet(array('fake_helper_alias' => $this->getGenericMockHelper('fake_helper')));
+        $helperset = new HelperSet(['fake_helper_alias' => $this->getGenericMockHelper('fake_helper')]);
         $this->assertTrue($helperset->has('fake_helper'), '->has() finds set helper');
         $this->assertTrue($helperset->has('fake_helper_alias'), '->has() finds set helper by alias');
     }
@@ -55,7 +55,7 @@ public function testGet()
     {
         $helper_01 = $this->getGenericMockHelper('fake_helper_01');
         $helper_02 = $this->getGenericMockHelper('fake_helper_02');
-        $helperset = new HelperSet(array('fake_helper_01_alias' => $helper_01, 'fake_helper_02_alias' => $helper_02));
+        $helperset = new HelperSet(['fake_helper_01_alias' => $helper_01, 'fake_helper_02_alias' => $helper_02]);
         $this->assertEquals($helper_01, $helperset->get('fake_helper_01'), '->get() returns correct helper by name');
         $this->assertEquals($helper_01, $helperset->get('fake_helper_01_alias'), '->get() returns correct helper by alias');
         $this->assertEquals($helper_02, $helperset->get('fake_helper_02'), '->get() returns correct helper by name');
@@ -101,7 +101,7 @@ public function testIteration()
         $helperset->set($this->getGenericMockHelper('fake_helper_01', $helperset));
         $helperset->set($this->getGenericMockHelper('fake_helper_02', $helperset));
 
-        $helpers = array('fake_helper_01', 'fake_helper_02');
+        $helpers = ['fake_helper_01', 'fake_helper_02'];
         $i = 0;
 
         foreach ($helperset as $helper) {
diff --git a/src/Symfony/Component/Console/Tests/Helper/HelperTest.php b/src/Symfony/Component/Console/Tests/Helper/HelperTest.php
index 1847582444d1..184d86e092ab 100644
--- a/src/Symfony/Component/Console/Tests/Helper/HelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/HelperTest.php
@@ -18,28 +18,28 @@ class HelperTest extends TestCase
 {
     public function formatTimeProvider()
     {
-        return array(
-            array(0,      '< 1 sec'),
-            array(1,      '1 sec'),
-            array(2,      '2 secs'),
-            array(59,     '59 secs'),
-            array(60,     '1 min'),
-            array(61,     '1 min'),
-            array(119,    '1 min'),
-            array(120,    '2 mins'),
-            array(121,    '2 mins'),
-            array(3599,   '59 mins'),
-            array(3600,   '1 hr'),
-            array(7199,   '1 hr'),
-            array(7200,   '2 hrs'),
-            array(7201,   '2 hrs'),
-            array(86399,  '23 hrs'),
-            array(86400,  '1 day'),
-            array(86401,  '1 day'),
-            array(172799, '1 day'),
-            array(172800, '2 days'),
-            array(172801, '2 days'),
-        );
+        return [
+            [0,      '< 1 sec'],
+            [1,      '1 sec'],
+            [2,      '2 secs'],
+            [59,     '59 secs'],
+            [60,     '1 min'],
+            [61,     '1 min'],
+            [119,    '1 min'],
+            [120,    '2 mins'],
+            [121,    '2 mins'],
+            [3599,   '59 mins'],
+            [3600,   '1 hr'],
+            [7199,   '1 hr'],
+            [7200,   '2 hrs'],
+            [7201,   '2 hrs'],
+            [86399,  '23 hrs'],
+            [86400,  '1 day'],
+            [86401,  '1 day'],
+            [172799, '1 day'],
+            [172800, '2 days'],
+            [172801, '2 days'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Tests/Helper/ProcessHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/ProcessHelperTest.php
index 382c9f4c1762..044c690d6daf 100644
--- a/src/Symfony/Component/Console/Tests/Helper/ProcessHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/ProcessHelperTest.php
@@ -26,7 +26,7 @@ class ProcessHelperTest extends TestCase
     public function testVariousProcessRuns($expected, $cmd, $verbosity, $error)
     {
         $helper = new ProcessHelper();
-        $helper->setHelperSet(new HelperSet(array(new DebugFormatterHelper())));
+        $helper->setHelperSet(new HelperSet([new DebugFormatterHelper()]));
         $output = $this->getOutputStream($verbosity);
         $helper->run($output, $cmd, $error);
         $this->assertEquals($expected, $this->getOutput($output));
@@ -35,7 +35,7 @@ public function testVariousProcessRuns($expected, $cmd, $verbosity, $error)
     public function testPassedCallbackIsExecuted()
     {
         $helper = new ProcessHelper();
-        $helper->setHelperSet(new HelperSet(array(new DebugFormatterHelper())));
+        $helper->setHelperSet(new HelperSet([new DebugFormatterHelper()]));
         $output = $this->getOutputStream(StreamOutput::VERBOSITY_NORMAL);
 
         $executed = false;
@@ -84,24 +84,24 @@ public function provideCommandsAndOutput()
 EOT;
 
         $errorMessage = 'An error occurred';
-        $args = new Process(array('php', '-r', 'echo 42;'));
+        $args = new Process(['php', '-r', 'echo 42;']);
         $args = $args->getCommandLine();
         $successOutputProcessDebug = str_replace("'php' '-r' 'echo 42;'", $args, $successOutputProcessDebug);
 
-        return array(
-            array('', 'php -r "echo 42;"', StreamOutput::VERBOSITY_VERBOSE, null),
-            array($successOutputVerbose, 'php -r "echo 42;"', StreamOutput::VERBOSITY_VERY_VERBOSE, null),
-            array($successOutputDebug, 'php -r "echo 42;"', StreamOutput::VERBOSITY_DEBUG, null),
-            array($successOutputDebugWithTags, 'php -r "echo \'<info>42</info>\';"', StreamOutput::VERBOSITY_DEBUG, null),
-            array('', 'php -r "syntax error"', StreamOutput::VERBOSITY_VERBOSE, null),
-            array($syntaxErrorOutputVerbose, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERY_VERBOSE, null),
-            array($syntaxErrorOutputDebug, 'php -r "fwrite(STDERR, \'error message\');usleep(500000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_DEBUG, null),
-            array($errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERBOSE, $errorMessage),
-            array($syntaxErrorOutputVerbose.$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERY_VERBOSE, $errorMessage),
-            array($syntaxErrorOutputDebug.$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(500000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_DEBUG, $errorMessage),
-            array($successOutputProcessDebug, array('php', '-r', 'echo 42;'), StreamOutput::VERBOSITY_DEBUG, null),
-            array($successOutputDebug, new Process('php -r "echo 42;"'), StreamOutput::VERBOSITY_DEBUG, null),
-        );
+        return [
+            ['', 'php -r "echo 42;"', StreamOutput::VERBOSITY_VERBOSE, null],
+            [$successOutputVerbose, 'php -r "echo 42;"', StreamOutput::VERBOSITY_VERY_VERBOSE, null],
+            [$successOutputDebug, 'php -r "echo 42;"', StreamOutput::VERBOSITY_DEBUG, null],
+            [$successOutputDebugWithTags, 'php -r "echo \'<info>42</info>\';"', StreamOutput::VERBOSITY_DEBUG, null],
+            ['', 'php -r "syntax error"', StreamOutput::VERBOSITY_VERBOSE, null],
+            [$syntaxErrorOutputVerbose, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERY_VERBOSE, null],
+            [$syntaxErrorOutputDebug, 'php -r "fwrite(STDERR, \'error message\');usleep(500000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_DEBUG, null],
+            [$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERBOSE, $errorMessage],
+            [$syntaxErrorOutputVerbose.$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERY_VERBOSE, $errorMessage],
+            [$syntaxErrorOutputDebug.$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(500000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_DEBUG, $errorMessage],
+            [$successOutputProcessDebug, ['php', '-r', 'echo 42;'], StreamOutput::VERBOSITY_DEBUG, null],
+            [$successOutputDebug, new Process('php -r "echo 42;"'), StreamOutput::VERBOSITY_DEBUG, null],
+        ];
     }
 
     private function getOutputStream($verbosity)
diff --git a/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php b/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
index 4c2de26a8638..e352311ccad0 100644
--- a/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
@@ -752,12 +752,12 @@ public function testFormatsWithoutMax($format)
      */
     public function provideFormat()
     {
-        return array(
-            array('normal'),
-            array('verbose'),
-            array('very_verbose'),
-            array('debug'),
-        );
+        return [
+            ['normal'],
+            ['verbose'],
+            ['very_verbose'],
+            ['debug'],
+        ];
     }
 
     protected function getOutputStream($decorated = true, $verbosity = StreamOutput::VERBOSITY_NORMAL)
diff --git a/src/Symfony/Component/Console/Tests/Helper/ProgressIndicatorTest.php b/src/Symfony/Component/Console/Tests/Helper/ProgressIndicatorTest.php
index c85018dece7e..6c6f86f36e3f 100644
--- a/src/Symfony/Component/Console/Tests/Helper/ProgressIndicatorTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/ProgressIndicatorTest.php
@@ -79,7 +79,7 @@ public function testNonDecoratedOutput()
 
     public function testCustomIndicatorValues()
     {
-        $bar = new ProgressIndicator($output = $this->getOutputStream(), null, 100, array('a', 'b', 'c'));
+        $bar = new ProgressIndicator($output = $this->getOutputStream(), null, 100, ['a', 'b', 'c']);
 
         $bar->start('Starting...');
         usleep(101000);
@@ -106,7 +106,7 @@ public function testCustomIndicatorValues()
      */
     public function testCannotSetInvalidIndicatorCharacters()
     {
-        $bar = new ProgressIndicator($this->getOutputStream(), null, 100, array('1'));
+        $bar = new ProgressIndicator($this->getOutputStream(), null, 100, ['1']);
     }
 
     /**
@@ -161,12 +161,12 @@ public function testFormats($format)
      */
     public function provideFormat()
     {
-        return array(
-            array('normal'),
-            array('verbose'),
-            array('very_verbose'),
-            array('debug'),
-        );
+        return [
+            ['normal'],
+            ['verbose'],
+            ['very_verbose'],
+            ['debug'],
+        ];
     }
 
     protected function getOutputStream($decorated = true, $verbosity = StreamOutput::VERBOSITY_NORMAL)
diff --git a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
index 76fe45ba2416..531474eddfe1 100644
--- a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
@@ -29,10 +29,10 @@ public function testAskChoice()
     {
         $questionHelper = new QuestionHelper();
 
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $questionHelper->setHelperSet($helperSet);
 
-        $heroes = array('Superman', 'Batman', 'Spiderman');
+        $heroes = ['Superman', 'Batman', 'Spiderman'];
 
         $inputStream = $this->getInputStream("\n1\n  1  \nFabien\n1\nFabien\n1\n0,2\n 0 , 2  \n\n\n");
 
@@ -68,21 +68,21 @@ public function testAskChoice()
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
-        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
-        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Spiderman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Spiderman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '0,1');
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, ' 0 , 1 ');
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, 0);
         // We are supposed to get the default value since we are not in interactive mode
@@ -93,11 +93,11 @@ public function testAskChoiceNonInteractive()
     {
         $questionHelper = new QuestionHelper();
 
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $questionHelper->setHelperSet($helperSet);
         $inputStream = $this->getInputStream("\n1\n  1  \nFabien\n1\nFabien\n1\n0,2\n 0 , 2  \n\n\n");
 
-        $heroes = array('Superman', 'Batman', 'Spiderman');
+        $heroes = ['Superman', 'Batman', 'Spiderman'];
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '0');
 
@@ -122,16 +122,16 @@ public function testAskChoiceNonInteractive()
 
         $question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, '0, 1');
         $question->setMultiselect(true);
-        $this->assertSame(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
+        $this->assertSame(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, '0, 1');
         $question->setMultiselect(true);
         $question->setValidator(null);
-        $this->assertSame(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
+        $this->assertSame(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, '0, Batman');
         $question->setMultiselect(true);
-        $this->assertSame(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
+        $this->assertSame(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, null);
         $question->setMultiselect(true);
@@ -179,11 +179,11 @@ public function testAskWithAutocomplete()
         $inputStream = $this->getInputStream("Acm\nAc\177\177s\tTest\n\n\033[A\033[A\n\033[A\033[A\033[A\033[A\033[A\tTest\n\033[B\nS\177\177\033[B\033[B\nF00\177\177oo\t\n");
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new Question('Please select a bundle', 'FrameworkBundle');
-        $question->setAutocompleterValues(array('AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle'));
+        $question->setAutocompleterValues(['AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle']);
 
         $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
         $this->assertEquals('AsseticBundleTest', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
@@ -205,9 +205,9 @@ public function testAskWithAutocompleteWithNonSequentialKeys()
         $inputStream = $this->getInputStream("\033[A\033[A\n\033[B\033[B\n");
 
         $dialog = new QuestionHelper();
-        $dialog->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $dialog->setHelperSet(new HelperSet([new FormatterHelper()]));
 
-        $question = new ChoiceQuestion('Please select a bundle', array(1 => 'AcmeDemoBundle', 4 => 'AsseticBundle'));
+        $question = new ChoiceQuestion('Please select a bundle', [1 => 'AcmeDemoBundle', 4 => 'AsseticBundle']);
         $question->setMaxAttempts(1);
 
         $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
@@ -222,14 +222,14 @@ public function testAskWithAutocompleteWithExactMatch()
 
         $inputStream = $this->getInputStream("b\n");
 
-        $possibleChoices = array(
+        $possibleChoices = [
             'a' => 'berlin',
             'b' => 'copenhagen',
             'c' => 'amsterdam',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $dialog->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $dialog->setHelperSet(new HelperSet([new FormatterHelper()]));
 
         $question = new ChoiceQuestion('Please select a city', $possibleChoices);
         $question->setMaxAttempts(1);
@@ -246,12 +246,12 @@ public function testAutocompleteWithTrailingBackslash()
         $inputStream = $this->getInputStream('E');
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new Question('');
         $expectedCompletion = 'ExampleNamespace\\';
-        $question->setAutocompleterValues(array($expectedCompletion));
+        $question->setAutocompleterValues([$expectedCompletion]);
 
         $output = $this->createOutputInterface();
         $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $output, $question);
@@ -262,11 +262,11 @@ public function testAutocompleteWithTrailingBackslash()
 
         // Shell control (esc) sequences are not so important: we only care that
         // <hl> tag is interpreted correctly and replaced
-        $irrelevantEscSequences = array(
+        $irrelevantEscSequences = [
             "\0337" => '', // Save cursor position
             "\0338" => '', // Restore cursor position
             "\033[K" => '', // Clear line from cursor till the end
-        );
+        ];
 
         $importantActualOutput = strtr($actualOutput, $irrelevantEscSequences);
 
@@ -304,14 +304,14 @@ public function testAskConfirmation($question, $expected, $default = true)
 
     public function getAskConfirmationData()
     {
-        return array(
-            array('', true),
-            array('', false, false),
-            array('y', true),
-            array('yes', true),
-            array('n', false),
-            array('no', false),
-        );
+        return [
+            ['', true],
+            ['', false, false],
+            ['y', true],
+            ['yes', true],
+            ['n', false],
+            ['no', false],
+        ];
     }
 
     public function testAskConfirmationWithCustomTrueAnswer()
@@ -328,12 +328,12 @@ public function testAskConfirmationWithCustomTrueAnswer()
     public function testAskAndValidate()
     {
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $error = 'This is not a color!';
         $validator = function ($color) use ($error) {
-            if (!\in_array($color, array('white', 'black'))) {
+            if (!\in_array($color, ['white', 'black'])) {
                 throw new \InvalidArgumentException($error);
             }
 
@@ -361,14 +361,14 @@ public function testAskAndValidate()
      */
     public function testSelectChoiceFromSimpleChoices($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'My environment 1',
             'My environment 2',
             'My environment 3',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -380,14 +380,14 @@ public function testSelectChoiceFromSimpleChoices($providedAnswer, $expectedValu
 
     public function simpleAnswerProvider()
     {
-        return array(
-            array(0, 'My environment 1'),
-            array(1, 'My environment 2'),
-            array(2, 'My environment 3'),
-            array('My environment 1', 'My environment 1'),
-            array('My environment 2', 'My environment 2'),
-            array('My environment 3', 'My environment 3'),
-        );
+        return [
+            [0, 'My environment 1'],
+            [1, 'My environment 2'],
+            [2, 'My environment 3'],
+            ['My environment 1', 'My environment 1'],
+            ['My environment 2', 'My environment 2'],
+            ['My environment 3', 'My environment 3'],
+        ];
     }
 
     /**
@@ -395,14 +395,14 @@ public function simpleAnswerProvider()
      */
     public function testSpecialCharacterChoiceFromMultipleChoiceList($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             '.',
             'src',
-        );
+        ];
 
         $dialog = new QuestionHelper();
         $inputStream = $this->getInputStream($providedAnswer."\n");
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the directory', $possibleChoices);
@@ -415,10 +415,10 @@ public function testSpecialCharacterChoiceFromMultipleChoiceList($providedAnswer
 
     public function specialCharacterInMultipleChoice()
     {
-        return array(
-            array('.', array('.')),
-            array('., src', array('.', 'src')),
-        );
+        return [
+            ['.', ['.']],
+            ['., src', ['.', 'src']],
+        ];
     }
 
     /**
@@ -426,15 +426,15 @@ public function specialCharacterInMultipleChoice()
      */
     public function testChoiceFromChoicelistWithMixedKeys($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             '0' => 'No environment',
             '1' => 'My environment 1',
             'env_2' => 'My environment 2',
             3 => 'My environment 3',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -446,14 +446,14 @@ public function testChoiceFromChoicelistWithMixedKeys($providedAnswer, $expected
 
     public function mixedKeysChoiceListAnswerProvider()
     {
-        return array(
-            array('0', '0'),
-            array('No environment', '0'),
-            array('1', '1'),
-            array('env_2', 'env_2'),
-            array(3, '3'),
-            array('My environment 1', '1'),
-        );
+        return [
+            ['0', '0'],
+            ['No environment', '0'],
+            ['1', '1'],
+            ['env_2', 'env_2'],
+            [3, '3'],
+            ['My environment 1', '1'],
+        ];
     }
 
     /**
@@ -461,14 +461,14 @@ public function mixedKeysChoiceListAnswerProvider()
      */
     public function testSelectChoiceFromChoiceList($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'env_1' => 'My environment 1',
             'env_2' => 'My environment',
             'env_3' => 'My environment',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -484,14 +484,14 @@ public function testSelectChoiceFromChoiceList($providedAnswer, $expectedValue)
      */
     public function testAmbiguousChoiceFromChoicelist()
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'env_1' => 'My first environment',
             'env_2' => 'My environment',
             'env_3' => 'My environment',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -502,12 +502,12 @@ public function testAmbiguousChoiceFromChoicelist()
 
     public function answerProvider()
     {
-        return array(
-            array('env_1', 'env_1'),
-            array('env_2', 'env_2'),
-            array('env_3', 'env_3'),
-            array('My environment 1', 'env_1'),
-        );
+        return [
+            ['env_1', 'env_1'],
+            ['env_2', 'env_2'],
+            ['env_3', 'env_3'],
+            ['My environment 1', 'env_1'],
+        ];
     }
 
     public function testNoInteraction()
@@ -523,22 +523,22 @@ public function testNoInteraction()
     public function testChoiceOutputFormattingQuestionForUtf8Keys()
     {
         $question = 'Lorem ipsum?';
-        $possibleChoices = array(
+        $possibleChoices = [
             'foo' => 'foo',
             'żółw' => 'bar',
             'łabądź' => 'baz',
-        );
-        $outputShown = array(
+        ];
+        $outputShown = [
             $question,
             '  [<info>foo   </info>] foo',
             '  [<info>żółw  </info>] bar',
             '  [<info>łabądź</info>] baz',
-        );
+        ];
         $output = $this->getMockBuilder('\Symfony\Component\Console\Output\OutputInterface')->getMock();
         $output->method('getFormatter')->willReturn(new OutputFormatter());
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $output->expects($this->once())->method('writeln')->with($this->equalTo($outputShown));
@@ -554,10 +554,10 @@ public function testLegacyAskChoice()
     {
         $questionHelper = new QuestionHelper();
 
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $questionHelper->setHelperSet($helperSet);
 
-        $heroes = array('Superman', 'Batman', 'Spiderman');
+        $heroes = ['Superman', 'Batman', 'Spiderman'];
 
         $questionHelper->setInputStream($this->getInputStream("\n1\n  1  \nFabien\n1\nFabien\n1\n0,2\n 0 , 2  \n\n\n"));
 
@@ -593,21 +593,21 @@ public function testLegacyAskChoice()
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Batman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
-        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
-        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Batman'], $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Spiderman'], $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Spiderman'], $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '0,1');
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Batman'], $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, ' 0 , 1 ');
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Batman'], $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
     }
 
     /**
@@ -650,11 +650,11 @@ public function testLegacyAskWithAutocomplete()
 
         $dialog = new QuestionHelper();
         $dialog->setInputStream($inputStream);
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new Question('Please select a bundle', 'FrameworkBundle');
-        $question->setAutocompleterValues(array('AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle'));
+        $question->setAutocompleterValues(['AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle']);
 
         $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
         $this->assertEquals('AsseticBundleTest', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
@@ -680,9 +680,9 @@ public function testLegacyAskWithAutocompleteWithNonSequentialKeys()
 
         $dialog = new QuestionHelper();
         $dialog->setInputStream($inputStream);
-        $dialog->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $dialog->setHelperSet(new HelperSet([new FormatterHelper()]));
 
-        $question = new ChoiceQuestion('Please select a bundle', array(1 => 'AcmeDemoBundle', 4 => 'AsseticBundle'));
+        $question = new ChoiceQuestion('Please select a bundle', [1 => 'AcmeDemoBundle', 4 => 'AsseticBundle']);
         $question->setMaxAttempts(1);
 
         $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
@@ -740,12 +740,12 @@ public function testLegacyAskConfirmationWithCustomTrueAnswer()
     public function testLegacyAskAndValidate()
     {
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $error = 'This is not a color!';
         $validator = function ($color) use ($error) {
-            if (!\in_array($color, array('white', 'black'))) {
+            if (!\in_array($color, ['white', 'black'])) {
                 throw new \InvalidArgumentException($error);
             }
 
@@ -775,15 +775,15 @@ public function testLegacyAskAndValidate()
      */
     public function testLegacySelectChoiceFromSimpleChoices($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'My environment 1',
             'My environment 2',
             'My environment 3',
-        );
+        ];
 
         $dialog = new QuestionHelper();
         $dialog->setInputStream($this->getInputStream($providedAnswer."\n"));
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -799,16 +799,16 @@ public function testLegacySelectChoiceFromSimpleChoices($providedAnswer, $expect
      */
     public function testLegacyChoiceFromChoicelistWithMixedKeys($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             '0' => 'No environment',
             '1' => 'My environment 1',
             'env_2' => 'My environment 2',
             3 => 'My environment 3',
-        );
+        ];
 
         $dialog = new QuestionHelper();
         $dialog->setInputStream($this->getInputStream($providedAnswer."\n"));
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -824,15 +824,15 @@ public function testLegacyChoiceFromChoicelistWithMixedKeys($providedAnswer, $ex
      */
     public function testLegacySelectChoiceFromChoiceList($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'env_1' => 'My environment 1',
             'env_2' => 'My environment',
             'env_3' => 'My environment',
-        );
+        ];
 
         $dialog = new QuestionHelper();
         $dialog->setInputStream($this->getInputStream($providedAnswer."\n"));
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -849,15 +849,15 @@ public function testLegacySelectChoiceFromChoiceList($providedAnswer, $expectedV
      */
     public function testLegacyAmbiguousChoiceFromChoicelist()
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'env_1' => 'My first environment',
             'env_2' => 'My environment',
             'env_3' => 'My environment',
-        );
+        ];
 
         $dialog = new QuestionHelper();
         $dialog->setInputStream($this->getInputStream("My environment\n"));
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -873,23 +873,23 @@ public function testLegacyAmbiguousChoiceFromChoicelist()
     public function testLegacyChoiceOutputFormattingQuestionForUtf8Keys()
     {
         $question = 'Lorem ipsum?';
-        $possibleChoices = array(
+        $possibleChoices = [
             'foo' => 'foo',
             'żółw' => 'bar',
             'łabądź' => 'baz',
-        );
-        $outputShown = array(
+        ];
+        $outputShown = [
             $question,
             '  [<info>foo   </info>] foo',
             '  [<info>żółw  </info>] bar',
             '  [<info>łabądź</info>] baz',
-        );
+        ];
         $output = $this->getMockBuilder('\Symfony\Component\Console\Output\OutputInterface')->getMock();
         $output->method('getFormatter')->willReturn(new OutputFormatter());
 
         $dialog = new QuestionHelper();
         $dialog->setInputStream($this->getInputStream("\n"));
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $output->expects($this->once())->method('writeln')->with($this->equalTo($outputShown));
@@ -932,7 +932,7 @@ public function testAskThrowsExceptionOnMissingInputWithValidator()
      */
     public function testEmptyChoices()
     {
-        new ChoiceQuestion('Question', array(), 'irrelevant');
+        new ChoiceQuestion('Question', [], 'irrelevant');
     }
 
     public function testTraversableAutocomplete()
@@ -952,11 +952,11 @@ public function testTraversableAutocomplete()
         $inputStream = $this->getInputStream("Acm\nAc\177\177s\tTest\n\n\033[A\033[A\n\033[A\033[A\033[A\033[A\033[A\tTest\n\033[B\nS\177\177\033[B\033[B\nF00\177\177oo\t\n");
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new Question('Please select a bundle', 'FrameworkBundle');
-        $question->setAutocompleterValues(new AutocompleteValues(array('irrelevant' => 'AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle')));
+        $question->setAutocompleterValues(new AutocompleteValues(['irrelevant' => 'AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle']));
 
         $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
         $this->assertEquals('AsseticBundleTest', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
diff --git a/src/Symfony/Component/Console/Tests/Helper/SymfonyQuestionHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/SymfonyQuestionHelperTest.php
index 9406e5b863d0..e7fd806064d2 100644
--- a/src/Symfony/Component/Console/Tests/Helper/SymfonyQuestionHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/SymfonyQuestionHelperTest.php
@@ -18,10 +18,10 @@ public function testAskChoice()
     {
         $questionHelper = new SymfonyQuestionHelper();
 
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $questionHelper->setHelperSet($helperSet);
 
-        $heroes = array('Superman', 'Batman', 'Spiderman');
+        $heroes = ['Superman', 'Batman', 'Spiderman'];
 
         $inputStream = $this->getInputStream("\n1\n  1  \nFabien\n1\nFabien\n1\n0,2\n 0 , 2  \n\n\n");
 
@@ -55,31 +55,31 @@ public function testAskChoice()
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
-        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
-        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Spiderman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Spiderman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '0,1');
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $output = $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $output = $this->createOutputInterface(), $question));
         $this->assertOutputContains('What is your favorite superhero? [Superman, Batman]', $output);
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, ' 0 , 1 ');
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $output = $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $output = $this->createOutputInterface(), $question));
         $this->assertOutputContains('What is your favorite superhero? [Superman, Batman]', $output);
     }
 
     public function testAskChoiceWithChoiceValueAsDefault()
     {
         $questionHelper = new SymfonyQuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $questionHelper->setHelperSet($helperSet);
-        $question = new ChoiceQuestion('What is your favorite superhero?', array('Superman', 'Batman', 'Spiderman'), 'Batman');
+        $question = new ChoiceQuestion('What is your favorite superhero?', ['Superman', 'Batman', 'Spiderman'], 'Batman');
         $question->setMaxAttempts(1);
 
         $this->assertSame('Batman', $questionHelper->ask($this->createStreamableInputInterfaceMock($this->getInputStream("Batman\n")), $output = $this->createOutputInterface(), $question));
diff --git a/src/Symfony/Component/Console/Tests/Helper/TableTest.php b/src/Symfony/Component/Console/Tests/Helper/TableTest.php
index b6a9d3b78bd8..d58a5036de83 100644
--- a/src/Symfony/Component/Console/Tests/Helper/TableTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/TableTest.php
@@ -85,16 +85,16 @@ public function testRenderAddRowsOneByOne($headers, $rows, $style, $expected, $d
 
     public function renderProvider()
     {
-        $books = array(
-            array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
-            array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'),
-            array('960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'),
-            array('80-902734-1-6', 'And Then There Were None', 'Agatha Christie'),
-        );
-
-        return array(
-            array(
-                array('ISBN', 'Title', 'Author'),
+        $books = [
+            ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
+            ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'],
+            ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
+            ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
+        ];
+
+        return [
+            [
+                ['ISBN', 'Title', 'Author'],
                 $books,
                 'default',
 <<<'TABLE'
@@ -108,9 +108,9 @@ public function renderProvider()
 +---------------+--------------------------+------------------+
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title', 'Author'),
+            ],
+            [
+                ['ISBN', 'Title', 'Author'],
                 $books,
                 'compact',
 <<<'TABLE'
@@ -121,9 +121,9 @@ public function renderProvider()
  80-902734-1-6 And Then There Were None Agatha Christie  
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title', 'Author'),
+            ],
+            [
+                ['ISBN', 'Title', 'Author'],
                 $books,
                 'borderless',
 <<<'TABLE'
@@ -137,15 +137,15 @@ public function renderProvider()
  =============== ========================== ================== 
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title'),
-                array(
-                    array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
-                    array('9971-5-0210-0'),
-                    array('960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'),
-                    array('80-902734-1-6', 'And Then There Were None', 'Agatha Christie'),
-                ),
+            ],
+            [
+                ['ISBN', 'Title'],
+                [
+                    ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
+                    ['9971-5-0210-0'],
+                    ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
+                    ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+--------------------------+------------------+
@@ -158,15 +158,15 @@ public function renderProvider()
 +---------------+--------------------------+------------------+
 
 TABLE
-            ),
-            array(
-                array(),
-                array(
-                    array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
-                    array('9971-5-0210-0'),
-                    array('960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'),
-                    array('80-902734-1-6', 'And Then There Were None', 'Agatha Christie'),
-                ),
+            ],
+            [
+                [],
+                [
+                    ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
+                    ['9971-5-0210-0'],
+                    ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
+                    ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+--------------------------+------------------+
@@ -177,15 +177,15 @@ public function renderProvider()
 +---------------+--------------------------+------------------+
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('99921-58-10-7', "Divine\nComedy", 'Dante Alighieri'),
-                    array('9971-5-0210-2', "Harry Potter\nand the Chamber of Secrets", "Rowling\nJoanne K."),
-                    array('9971-5-0210-2', "Harry Potter\nand the Chamber of Secrets", "Rowling\nJoanne K."),
-                    array('960-425-059-0', 'The Lord of the Rings', "J. R. R.\nTolkien"),
-                ),
+            ],
+            [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['99921-58-10-7', "Divine\nComedy", 'Dante Alighieri'],
+                    ['9971-5-0210-2', "Harry Potter\nand the Chamber of Secrets", "Rowling\nJoanne K."],
+                    ['9971-5-0210-2', "Harry Potter\nand the Chamber of Secrets", "Rowling\nJoanne K."],
+                    ['960-425-059-0', 'The Lord of the Rings', "J. R. R.\nTolkien"],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+----------------------------+-----------------+
@@ -202,10 +202,10 @@ public function renderProvider()
 +---------------+----------------------------+-----------------+
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title'),
-                array(),
+            ],
+            [
+                ['ISBN', 'Title'],
+                [],
                 'default',
 <<<'TABLE'
 +------+-------+
@@ -213,19 +213,19 @@ public function renderProvider()
 +------+-------+
 
 TABLE
-            ),
-            array(
-                array(),
-                array(),
+            ],
+            [
+                [],
+                [],
                 'default',
                 '',
-            ),
-            'Cell text with tags used for Output styling' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('<info>99921-58-10-7</info>', '<error>Divine Comedy</error>', '<fg=blue;bg=white>Dante Alighieri</fg=blue;bg=white>'),
-                    array('9971-5-0210-0', 'A Tale of Two Cities', '<info>Charles Dickens</>'),
-                ),
+            ],
+            'Cell text with tags used for Output styling' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['<info>99921-58-10-7</info>', '<error>Divine Comedy</error>', '<fg=blue;bg=white>Dante Alighieri</fg=blue;bg=white>'],
+                    ['9971-5-0210-0', 'A Tale of Two Cities', '<info>Charles Dickens</>'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+----------------------+-----------------+
@@ -236,13 +236,13 @@ public function renderProvider()
 +---------------+----------------------+-----------------+
 
 TABLE
-            ),
-            'Cell text with tags not used for Output styling' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('<strong>99921-58-10-700</strong>', '<f>Divine Com</f>', 'Dante Alighieri'),
-                    array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'),
-                ),
+            ],
+            'Cell text with tags not used for Output styling' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['<strong>99921-58-10-700</strong>', '<f>Divine Com</f>', 'Dante Alighieri'],
+                    ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'],
+                ],
                 'default',
 <<<'TABLE'
 +----------------------------------+----------------------+-----------------+
@@ -253,28 +253,28 @@ public function renderProvider()
 +----------------------------------+----------------------+-----------------+
 
 TABLE
-            ),
-            'Cell with colspan' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
+            ],
+            'Cell with colspan' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
                     new TableSeparator(),
-                    array(new TableCell('Divine Comedy(Dante Alighieri)', array('colspan' => 3))),
+                    [new TableCell('Divine Comedy(Dante Alighieri)', ['colspan' => 3])],
                     new TableSeparator(),
-                    array(
-                        new TableCell('Arduino: A Quick-Start Guide', array('colspan' => 2)),
+                    [
+                        new TableCell('Arduino: A Quick-Start Guide', ['colspan' => 2]),
                         'Mark Schmidt',
-                    ),
+                    ],
                     new TableSeparator(),
-                    array(
+                    [
                         '9971-5-0210-0',
-                        new TableCell("A Tale of \nTwo Cities", array('colspan' => 2)),
-                    ),
+                        new TableCell("A Tale of \nTwo Cities", ['colspan' => 2]),
+                    ],
                     new TableSeparator(),
-                    array(
-                        new TableCell('Cupiditate dicta atque porro, tempora exercitationem modi animi nulla nemo vel nihil!', array('colspan' => 3)),
-                    ),
-                ),
+                    [
+                        new TableCell('Cupiditate dicta atque porro, tempora exercitationem modi animi nulla nemo vel nihil!', ['colspan' => 3]),
+                    ],
+                ],
                 'default',
 <<<'TABLE'
 +-------------------------------+-------------------------------+-----------------------------+
@@ -293,21 +293,21 @@ public function renderProvider()
 +-------------------------------+-------------------------------+-----------------------------+
 
 TABLE
-            ),
-            'Cell with rowspan' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array(
-                        new TableCell('9971-5-0210-0', array('rowspan' => 3)),
-                        new TableCell('Divine Comedy', array('rowspan' => 2)),
+            ],
+            'Cell with rowspan' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    [
+                        new TableCell('9971-5-0210-0', ['rowspan' => 3]),
+                        new TableCell('Divine Comedy', ['rowspan' => 2]),
                         'Dante Alighieri',
-                    ),
-                    array(),
-                    array("The Lord of \nthe Rings", "J. R. \nR. Tolkien"),
+                    ],
+                    [],
+                    ["The Lord of \nthe Rings", "J. R. \nR. Tolkien"],
                     new TableSeparator(),
-                    array('80-902734-1-6', new TableCell("And Then \nThere \nWere None", array('rowspan' => 3)), 'Agatha Christie'),
-                    array('80-902734-1-7', 'Test'),
-                ),
+                    ['80-902734-1-6', new TableCell("And Then \nThere \nWere None", ['rowspan' => 3]), 'Agatha Christie'],
+                    ['80-902734-1-7', 'Test'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+---------------+-----------------+
@@ -324,23 +324,23 @@ public function renderProvider()
 +---------------+---------------+-----------------+
 
 TABLE
-            ),
-            'Cell with rowspan and colspan' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array(
-                        new TableCell('9971-5-0210-0', array('rowspan' => 2, 'colspan' => 2)),
+            ],
+            'Cell with rowspan and colspan' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    [
+                        new TableCell('9971-5-0210-0', ['rowspan' => 2, 'colspan' => 2]),
                         'Dante Alighieri',
-                    ),
-                    array('Charles Dickens'),
+                    ],
+                    ['Charles Dickens'],
                     new TableSeparator(),
-                    array(
+                    [
                         'Dante Alighieri',
-                        new TableCell('9971-5-0210-0', array('rowspan' => 3, 'colspan' => 2)),
-                    ),
-                    array('J. R. R. Tolkien'),
-                    array('J. R. R'),
-                ),
+                        new TableCell('9971-5-0210-0', ['rowspan' => 3, 'colspan' => 2]),
+                    ],
+                    ['J. R. R. Tolkien'],
+                    ['J. R. R'],
+                ],
                 'default',
 <<<'TABLE'
 +------------------+---------+-----------------+
@@ -355,27 +355,27 @@ public function renderProvider()
 +------------------+---------+-----------------+
 
 TABLE
-            ),
-            'Cell with rowspan and colspan contains new line break' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array(
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
+            ],
+            'Cell with rowspan and colspan contains new line break' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    [
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
                         'Dante Alighieri',
-                    ),
-                    array('Charles Dickens'),
+                    ],
+                    ['Charles Dickens'],
                     new TableSeparator(),
-                    array(
+                    [
                         'Dante Alighieri',
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
-                    ),
-                    array('Charles Dickens'),
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
+                    ],
+                    ['Charles Dickens'],
                     new TableSeparator(),
-                    array(
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
-                        new TableCell("Dante \nAlighieri", array('rowspan' => 2, 'colspan' => 1)),
-                    ),
-                ),
+                    [
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
+                        new TableCell("Dante \nAlighieri", ['rowspan' => 2, 'colspan' => 1]),
+                    ],
+                ],
                 'default',
 <<<'TABLE'
 +-----------------+-------+-----------------+
@@ -398,21 +398,21 @@ public function renderProvider()
 +-----------------+-------+-----------------+
 
 TABLE
-            ),
-            'Cell with rowspan and colspan without using TableSeparator' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array(
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
+            ],
+            'Cell with rowspan and colspan without using TableSeparator' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    [
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
                         'Dante Alighieri',
-                    ),
-                    array('Charles Dickens'),
-                    array(
+                    ],
+                    ['Charles Dickens'],
+                    [
                         'Dante Alighieri',
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
-                    ),
-                    array('Charles Dickens'),
-                ),
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
+                    ],
+                    ['Charles Dickens'],
+                ],
                 'default',
 <<<'TABLE'
 +-----------------+-------+-----------------+
@@ -429,17 +429,17 @@ public function renderProvider()
 +-----------------+-------+-----------------+
 
 TABLE
-            ),
-            'Cell with rowspan and colspan with separator inside a rowspan' => array(
-                array('ISBN', 'Author'),
-                array(
-                    array(
-                        new TableCell('9971-5-0210-0', array('rowspan' => 3, 'colspan' => 1)),
+            ],
+            'Cell with rowspan and colspan with separator inside a rowspan' => [
+                ['ISBN', 'Author'],
+                [
+                    [
+                        new TableCell('9971-5-0210-0', ['rowspan' => 3, 'colspan' => 1]),
                         'Dante Alighieri',
-                    ),
-                    array(new TableSeparator()),
-                    array('Charles Dickens'),
-                ),
+                    ],
+                    [new TableSeparator()],
+                    ['Charles Dickens'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+-----------------+
@@ -451,13 +451,13 @@ public function renderProvider()
 +---------------+-----------------+
 
 TABLE
-            ),
-            'Multiple header lines' => array(
-                array(
-                    array(new TableCell('Main title', array('colspan' => 3))),
-                    array('ISBN', 'Title', 'Author'),
-                ),
-                array(),
+            ],
+            'Multiple header lines' => [
+                [
+                    [new TableCell('Main title', ['colspan' => 3])],
+                    ['ISBN', 'Title', 'Author'],
+                ],
+                [],
                 'default',
 <<<'TABLE'
 +------+-------+--------+
@@ -467,17 +467,17 @@ public function renderProvider()
 +------+-------+--------+
 
 TABLE
-            ),
-            'Row with multiple cells' => array(
-                array(),
-                array(
-                    array(
-                        new TableCell('1', array('colspan' => 3)),
-                        new TableCell('2', array('colspan' => 2)),
-                        new TableCell('3', array('colspan' => 2)),
-                        new TableCell('4', array('colspan' => 2)),
-                    ),
-        ),
+            ],
+            'Row with multiple cells' => [
+                [],
+                [
+                    [
+                        new TableCell('1', ['colspan' => 3]),
+                        new TableCell('2', ['colspan' => 2]),
+                        new TableCell('3', ['colspan' => 2]),
+                        new TableCell('4', ['colspan' => 2]),
+                    ],
+        ],
                 'default',
 <<<'TABLE'
 +---+--+--+---+--+---+--+---+--+
@@ -485,22 +485,22 @@ public function renderProvider()
 +---+--+--+---+--+---+--+---+--+
 
 TABLE
-            ),
-            'Coslpan and table cells with comment style' => array(
-                array(
-                    new TableCell('<comment>Long Title</comment>', array('colspan' => 3)),
-                ),
-                array(
-                    array(
-                        new TableCell('9971-5-0210-0', array('colspan' => 3)),
-                    ),
+            ],
+            'Coslpan and table cells with comment style' => [
+                [
+                    new TableCell('<comment>Long Title</comment>', ['colspan' => 3]),
+                ],
+                [
+                    [
+                        new TableCell('9971-5-0210-0', ['colspan' => 3]),
+                    ],
                     new TableSeparator(),
-                    array(
+                    [
                         'Dante Alighieri',
                         'J. R. R. Tolkien',
                         'J. R. R',
-                    ),
-                ),
+                    ],
+                ],
                 'default',
                 <<<TABLE
 +-----------------+------------------+---------+
@@ -514,22 +514,22 @@ public function renderProvider()
 TABLE
             ,
                 true,
-            ),
-            'Row with formatted cells containin
10000
g a newline' => array(
-                array(),
-                array(
-                    array(
-                        new TableCell('<error>Dont break'."\n".'here</error>', array('colspan' => 2)),
-                    ),
+            ],
+            'Row with formatted cells containing a newline' => [
+                [],
+                [
+                    [
+                        new TableCell('<error>Dont break'."\n".'here</error>', ['colspan' => 2]),
+                    ],
                     new TableSeparator(),
-                    array(
+                    [
                         'foo',
-                         new TableCell('<error>Dont break'."\n".'here</error>', array('rowspan' => 2)),
-                    ),
-                    array(
+                         new TableCell('<error>Dont break'."\n".'here</error>', ['rowspan' => 2]),
+                    ],
+                    [
                         'bar',
-                    ),
-                ),
+                    ],
+                ],
                 'default',
                 <<<'TABLE'
 +-------+------------+
@@ -543,16 +543,16 @@ public function renderProvider()
 TABLE
             ,
                 true,
-            ),
-        );
+            ],
+        ];
     }
 
     public function testRenderMultiByte()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('■■'))
-            ->setRows(array(array(1234)))
+            ->setHeaders(['■■'])
+            ->setRows([[1234]])
             ->setStyle('default')
         ;
         $table->render();
@@ -574,7 +574,7 @@ public function testTableCellWithNumericIntValue()
     {
         $table = new Table($output = $this->getOutputStream());
 
-        $table->setRows(array(array(new TableCell(12345))));
+        $table->setRows([[new TableCell(12345)]]);
         $table->render();
 
         $expected =
@@ -592,7 +592,7 @@ public function testTableCellWithNumericFloatValue()
     {
         $table = new Table($output = $this->getOutputStream());
 
-        $table->setRows(array(array(new TableCell(12345.01))));
+        $table->setRows([[new TableCell(12345.01)]]);
         $table->render();
 
         $expected =
@@ -618,8 +618,8 @@ public function testStyle()
         Table::setStyleDefinition('dotfull', $style);
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('Foo'))
-            ->setRows(array(array('Bar')))
+            ->setHeaders(['Foo'])
+            ->setRows([['Bar']])
             ->setStyle('dotfull');
         $table->render();
 
@@ -640,14 +640,14 @@ public function testRowSeparator()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('Foo'))
-            ->setRows(array(
-                array('Bar1'),
+            ->setHeaders(['Foo'])
+            ->setRows([
+                ['Bar1'],
                 new TableSeparator(),
-                array('Bar2'),
+                ['Bar2'],
                 new TableSeparator(),
-                array('Bar3'),
-            ));
+                ['Bar3'],
+            ]);
         $table->render();
 
         $expected =
@@ -672,9 +672,9 @@ public function testRowSeparator()
     public function testRenderMultiCalls()
     {
         $table = new Table($output = $this->getOutputStream());
-        $table->setRows(array(
-            array(new TableCell('foo', array('colspan' => 2))),
-        ));
+        $table->setRows([
+            [new TableCell('foo', ['colspan' => 2])],
+        ]);
         $table->render();
         $table->render();
         $table->render();
@@ -700,11 +700,11 @@ public function testColumnStyle()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-                array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'),
-            ));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+                ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'],
+            ]);
 
         $style = new TableStyle();
         $style->setPadType(STR_PAD_LEFT);
@@ -734,10 +734,10 @@ public function testThrowsWhenTheCellInAnArray()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', array(), 'Dante Alighieri', '9.95'),
-            ));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', [], 'Dante Alighieri', '9.95'],
+            ]);
 
         $table->render();
     }
@@ -746,11 +746,11 @@ public function testColumnWidth()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-                array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'),
-            ))
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+                ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'],
+            ])
             ->setColumnWidth(0, 15)
             ->setColumnWidth(3, 10);
 
@@ -778,12 +778,12 @@ public function testColumnWidths()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-                array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'),
-            ))
-            ->setColumnWidths(array(15, 0, -1, 10));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+                ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'],
+            ])
+            ->setColumnWidths([15, 0, -1, 10]);
 
         $style = new TableStyle();
         $style->setPadType(STR_PAD_LEFT);
@@ -836,12 +836,12 @@ public function testBoxedStyleWithColspan()
         $table = new Table($output = $this->getOutputStream());
         $table->setStyle($boxed);
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
+            ->setHeaders(['ISBN', 'Title', 'Author'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
                 new TableSeparator(),
-                array(new TableCell('This value spans 3 columns.', array('colspan' => 3))),
-            ))
+                [new TableCell('This value spans 3 columns.', ['colspan' => 3])],
+            ])
         ;
         $table->render();
 
diff --git a/src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php b/src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php
index b91b6d71df79..37caaf2d1cd7 100644
--- a/src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php
@@ -21,23 +21,23 @@ class ArgvInputTest extends TestCase
 {
     public function testConstructor()
     {
-        $_SERVER['argv'] = array('cli.php', 'foo');
+        $_SERVER['argv'] = ['cli.php', 'foo'];
         $input = new ArgvInput();
         $r = new \ReflectionObject($input);
         $p = $r->getProperty('tokens');
         $p->setAccessible(true);
 
-        $this->assertEquals(array('foo'), $p->getValue($input), '__construct() automatically get its input from the argv server variable');
+        $this->assertEquals(['foo'], $p->getValue($input), '__construct() automatically get its input from the argv server variable');
     }
 
     public function testParseArguments()
     {
-        $input = new ArgvInput(array('cli.php', 'foo'));
-        $input->bind(new InputDefinition(array(new InputArgument('name'))));
-        $this->assertEquals(array('name' => 'foo'), $input->getArguments(), '->parse() parses required arguments');
+        $input = new ArgvInput(['cli.php', 'foo']);
+        $input->bind(new InputDefinition([new InputArgument('name')]));
+        $this->assertEquals(['name' => 'foo'], $input->getArguments(), '->parse() parses required arguments');
 
-        $input->bind(new InputDefinition(array(new InputArgument('name'))));
-        $this->assertEquals(array('name' => 'foo'), $input->getArguments(), '->parse() is stateless');
+        $input->bind(new InputDefinition([new InputArgument('name')]));
+        $this->assertEquals(['name' => 'foo'], $input->getArguments(), '->parse() is stateless');
     }
 
     /**
@@ -53,128 +53,128 @@ public function testParseOptions($input, $options, $expectedOptions, $message)
 
     public function provideOptions()
     {
-        return array(
-            array(
-                array('cli.php', '--foo'),
-                array(new InputOption('foo')),
-                array('foo' => true),
+        return [
+            [
+                ['cli.php', '--foo'],
+                [new InputOption('foo')],
+                ['foo' => true],
                 '->parse() parses long options without a value',
-            ),
-            array(
-                array('cli.php', '--foo=bar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)),
-                array('foo' => 'bar'),
+            ],
+            [
+                ['cli.php', '--foo=bar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)],
+                ['foo' => 'bar'],
                 '->parse() parses long options with a required value (with a = separator)',
-            ),
-            array(
-                array('cli.php', '--foo', 'bar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)),
-                array('foo' => 'bar'),
+            ],
+            [
+                ['cli.php', '--foo', 'bar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)],
+                ['foo' => 'bar'],
                 '->parse() parses long options with a required value (with a space separator)',
-            ),
-            array(
-                array('cli.php', '--foo='),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)),
-                array('foo' => ''),
+            ],
+            [
+                ['cli.php', '--foo='],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)],
+                ['foo' => ''],
                 '->parse() parses long options with optional value which is empty (with a = separator) as empty string',
-            ),
-            array(
-                array('cli.php', '--foo=', 'bar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED)),
-                array('foo' => ''),
+            ],
+            [
+                ['cli.php', '--foo=', 'bar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED)],
+                ['foo' => ''],
                 '->parse() parses long options with optional value without value specified or an empty string (with a = separator) followed by an argument as empty string',
-            ),
-            array(
-                array('cli.php', 'bar', '--foo'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED)),
-                array('foo' => null),
+            ],
+            [
+                ['cli.php', 'bar', '--foo'],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED)],
+                ['foo' => null],
                 '->parse() parses long options with optional value which is empty (with a = separator) preceded by an argument',
-            ),
-            array(
-                array('cli.php', '--foo', '', 'bar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED)),
-                array('foo' => ''),
+            ],
+            [
+                ['cli.php', '--foo', '', 'bar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED)],
+                ['foo' => ''],
                 '->parse() parses long options with optional value which is empty as empty string even followed by an argument',
-            ),
-            array(
-                array('cli.php', '--foo'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)),
-                array('foo' => null),
+            ],
+            [
+                ['cli.php', '--foo'],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)],
+                ['foo' => null],
                 '->parse() parses long options with optional value specified with no separator and no value as null',
-            ),
-            array(
-                array('cli.php', '-f'),
-                array(new InputOption('foo', 'f')),
-                array('foo' => true),
+            ],
+            [
+                ['cli.php', '-f'],
+                [new InputOption('foo', 'f')],
+                ['foo' => true],
                 '->parse() parses short options without a value',
-            ),
-            array(
-                array('cli.php', '-fbar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)),
-                array('foo' => 'bar'),
+            ],
+            [
+                ['cli.php', '-fbar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)],
+                ['foo' => 'bar'],
                 '->parse() parses short options with a required value (with no separator)',
-            ),
-            array(
-                array('cli.php', '-f', 'bar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)),
-                array('foo' => 'bar'),
+            ],
+            [
+                ['cli.php', '-f', 'bar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)],
+                ['foo' => 'bar'],
                 '->parse() parses short options with a required value (with a space separator)',
-            ),
-            array(
-                array('cli.php', '-f', ''),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)),
-                array('foo' => ''),
+            ],
+            [
+                ['cli.php', '-f', ''],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)],
+                ['foo' => ''],
                 '->parse() parses short options with an optional empty value',
-            ),
-            array(
-                array('cli.php', '-f', '', 'foo'),
-                array(new InputArgument('name'), new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)),
-                array('foo' => ''),
+            ],
+            [
+                ['cli.php', '-f', '', 'foo'],
+                [new InputArgument('name'), new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)],
+                ['foo' => ''],
                 '->parse() parses short options with an optional empty value followed by an argument',
-            ),
-            array(
-                array('cli.php', '-f', '', '-b'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputOption('bar', 'b')),
-                array('foo' => '', 'bar' => true),
+            ],
+            [
+                ['cli.php', '-f', '', '-b'],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputOption('bar', 'b')],
+                ['foo' => '', 'bar' => true],
                 '->parse() parses short options with an optional empty value followed by an option',
-            ),
-            array(
-                array('cli.php', '-f', '-b', 'foo'),
-                array(new InputArgument('name'), new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputOption('bar', 'b')),
-                array('foo' => null, 'bar' => true),
+            ],
+            [
+                ['cli.php', '-f', '-b', 'foo'],
+                [new InputArgument('name'), new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputOption('bar', 'b')],
+                ['foo' => null, 'bar' => true],
                 '->parse() parses short options with an optional value which is not present',
-            ),
-            array(
-                array('cli.php', '-fb'),
-                array(new InputOption('foo', 'f'), new InputOption('bar', 'b')),
-                array('foo' => true, 'bar' => true),
+            ],
+            [
+                ['cli.php', '-fb'],
+                [new InputOption('foo', 'f'), new InputOption('bar', 'b')],
+                ['foo' => true, 'bar' => true],
                 '->parse() parses short options when they are aggregated as a single one',
-            ),
-            array(
-                array('cli.php', '-fb', 'bar'),
-                array(new InputOption('foo', 'f'), new InputOption('bar', 'b', InputOption::VALUE_REQUIRED)),
-                array('foo' => true, 'bar' => 'bar'),
+            ],
+            [
+                ['cli.php', '-fb', 'bar'],
+                [new InputOption('foo', 'f'), new InputOption('bar', 'b', InputOption::VALUE_REQUIRED)],
+                ['foo' => true, 'bar' => 'bar'],
                 '->parse() parses short options when they are aggregated as a single one and the last one has a required value',
-            ),
-            array(
-                array('cli.php', '-fb', 'bar'),
-                array(new InputOption('foo', 'f'), new InputOption('bar', 'b', InputOption::VALUE_OPTIONAL)),
-                array('foo' => true, 'bar' => 'bar'),
+            ],
+            [
+                ['cli.php', '-fb', 'bar'],
+                [new InputOption('foo', 'f'), new InputOption('bar', 'b', InputOption::VALUE_OPTIONAL)],
+                ['foo' => true, 'bar' => 'bar'],
                 '->parse() parses short options when they are aggregated as a single one and the last one has an optional value',
-            ),
-            array(
-                array('cli.php', '-fbbar'),
-                array(new InputOption('foo', 'f'), new InputOption('bar', 'b', InputOption::VALUE_OPTIONAL)),
-                array('foo' => true, 'bar' => 'bar'),
+            ],
+            [
+                ['cli.php', '-fbbar'],
+                [new InputOption('foo', 'f'), new InputOption('bar', 'b', InputOption::VALUE_OPTIONAL)],
+                ['foo' => true, 'bar' => 'bar'],
                 '->parse() parses short options when they are aggregated as a single one and the last one has an optional value with no separator',
-            ),
-            array(
-                array('cli.php', '-fbbar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputOption('bar', 'b', InputOption::VALUE_OPTIONAL)),
-                array('foo' => 'bbar', 'bar' => null),
+            ],
+            [
+                ['cli.php', '-fbbar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputOption('bar', 'b', InputOption::VALUE_OPTIONAL)],
+                ['foo' => 'bbar', 'bar' => null],
                 '->parse() parses short options when they are aggregated as a single one and one of them takes a value',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -195,162 +195,162 @@ public function testInvalidInput($argv, $definition, $expectedExceptionMessage)
 
     public function provideInvalidInput()
     {
-        return array(
-            array(
-                array('cli.php', '--foo'),
-                new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED))),
+        return [
+            [
+                ['cli.php', '--foo'],
+                new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)]),
                 'The "--foo" option requires a value.',
-            ),
-            array(
-                array('cli.php', '-f'),
-                new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED))),
+            ],
+            [
+                ['cli.php', '-f'],
+                new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)]),
                 'The "--foo" option requires a value.',
-            ),
-            array(
-                array('cli.php', '-ffoo'),
-                new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_NONE))),
+            ],
+            [
+                ['cli.php', '-ffoo'],
+                new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_NONE)]),
                 'The "-o" option does not exist.',
-            ),
-            array(
-                array('cli.php', '--foo=bar'),
-                new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_NONE))),
+            ],
+            [
+                ['cli.php', '--foo=bar'],
+                new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_NONE)]),
                 'The "--foo" option does not accept a value.',
-            ),
-            array(
-                array('cli.php', 'foo', 'bar'),
+            ],
+            [
+                ['cli.php', 'foo', 'bar'],
                 new InputDefinition(),
                 'No arguments expected, got "foo".',
-            ),
-            array(
-                array('cli.php', 'foo', 'bar'),
-                new InputDefinition(array(new InputArgument('number'))),
+            ],
+            [
+                ['cli.php', 'foo', 'bar'],
+                new InputDefinition([new InputArgument('number')]),
                 'Too many arguments, expected arguments "number".',
-            ),
-            array(
-                array('cli.php', 'foo', 'bar', 'zzz'),
-                new InputDefinition(array(new InputArgument('number'), new InputArgument('county'))),
+            ],
+            [
+                ['cli.php', 'foo', 'bar', 'zzz'],
+                new InputDefinition([new InputArgument('number'), new InputArgument('county')]),
                 'Too many arguments, expected arguments "number" "county".',
-            ),
-            array(
-                array('cli.php', '--foo'),
+            ],
+            [
+                ['cli.php', '--foo'],
                 new InputDefinition(),
                 'The "--foo" option does not exist.',
-            ),
-            array(
-                array('cli.php', '-f'),
+            ],
+            [
+                ['cli.php', '-f'],
                 new InputDefinition(),
                 'The "-f" option does not exist.',
-            ),
-            array(
-                array('cli.php', '-1'),
-                new InputDefinition(array(new InputArgument('number'))),
+            ],
+            [
+                ['cli.php', '-1'],
+                new InputDefinition([new InputArgument('number')]),
                 'The "-1" option does not exist.',
-            ),
-            array(
-                array('cli.php', '-fЩ'),
-                new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_NONE))),
+            ],
+            [
+                ['cli.php', '-fЩ'],
+                new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_NONE)]),
                 'The "-Щ" option does not exist.',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testParseArrayArgument()
     {
-        $input = new ArgvInput(array('cli.php', 'foo', 'bar', 'baz', 'bat'));
-        $input->bind(new InputDefinition(array(new InputArgument('name', InputArgument::IS_ARRAY))));
+        $input = new ArgvInput(['cli.php', 'foo', 'bar', 'baz', 'bat']);
+        $input->bind(new InputDefinition([new InputArgument('name', InputArgument::IS_ARRAY)]));
 
-        $this->assertEquals(array('name' => array('foo', 'bar', 'baz', 'bat')), $input->getArguments(), '->parse() parses array arguments');
+        $this->assertEquals(['name' => ['foo', 'bar', 'baz', 'bat']], $input->getArguments(), '->parse() parses array arguments');
     }
 
     public function testParseArrayOption()
     {
-        $input = new ArgvInput(array('cli.php', '--name=foo', '--name=bar', '--name=baz'));
-        $input->bind(new InputDefinition(array(new InputOption('name', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY))));
+        $input = new ArgvInput(['cli.php', '--name=foo', '--name=bar', '--name=baz']);
+        $input->bind(new InputDefinition([new InputOption('name', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY)]));
 
-        $this->assertEquals(array('name' => array('foo', 'bar', 'baz')), $input->getOptions(), '->parse() parses array options ("--option=value" syntax)');
+        $this->assertEquals(['name' => ['foo', 'bar', 'baz']], $input->getOptions(), '->parse() parses array options ("--option=value" syntax)');
 
-        $input = new ArgvInput(array('cli.php', '--name', 'foo', '--name', 'bar', '--name', 'baz'));
-        $input->bind(new InputDefinition(array(new InputOption('name', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY))));
-        $this->assertEquals(array('name' => array('foo', 'bar', 'baz')), $input->getOptions(), '->parse() parses array options ("--option value" syntax)');
+        $input = new ArgvInput(['cli.php', '--name', 'foo', '--name', 'bar', '--name', 'baz']);
+        $input->bind(new InputDefinition([new InputOption('name', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY)]));
+        $this->assertEquals(['name' => ['foo', 'bar', 'baz']], $input->getOptions(), '->parse() parses array options ("--option value" syntax)');
 
-        $input = new ArgvInput(array('cli.php', '--name=foo', '--name=bar', '--name='));
-        $input->bind(new InputDefinition(array(new InputOption('name', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY))));
-        $this->assertSame(array('name' => array('foo', 'bar', '')), $input->getOptions(), '->parse() parses empty array options as null ("--option=value" syntax)');
+        $input = new ArgvInput(['cli.php', '--name=foo', '--name=bar', '--name=']);
+        $input->bind(new InputDefinition([new InputOption('name', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY)]));
+        $this->assertSame(['name' => ['foo', 'bar', '']], $input->getOptions(), '->parse() parses empty array options as null ("--option=value" syntax)');
 
-        $input = new ArgvInput(array('cli.php', '--name', 'foo', '--name', 'bar', '--name', '--anotherOption'));
-        $input->bind(new InputDefinition(array(
+        $input = new ArgvInput(['cli.php', '--name', 'foo', '--name', 'bar', '--name', '--anotherOption']);
+        $input->bind(new InputDefinition([
             new InputOption('name', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY),
             new InputOption('anotherOption', null, InputOption::VALUE_NONE),
-        )));
-        $this->assertSame(array('name' => array('foo', 'bar', null), 'anotherOption' => true), $input->getOptions(), '->parse() parses empty array options ("--option value" syntax)');
+        ]));
+        $this->assertSame(['name' => ['foo', 'bar', null], 'anotherOption' => true], $input->getOptions(), '->parse() parses empty array options ("--option value" syntax)');
     }
 
     public function testParseNegativeNumberAfterDoubleDash()
     {
-        $input = new ArgvInput(array('cli.php', '--', '-1'));
-        $input->bind(new InputDefinition(array(new InputArgument('number'))));
-        $this->assertEquals(array('number' => '-1'), $input->getArguments(), '->parse() parses arguments with leading dashes as arguments after having encountered a double-dash sequence');
-
-        $input = new ArgvInput(array('cli.php', '-f', 'bar', '--', '-1'));
-        $input->bind(new InputDefinition(array(new InputArgument('number'), new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL))));
-        $this->assertEquals(array('foo' => 'bar'), $input->getOptions(), '->parse() parses arguments with leading dashes as options before having encountered a double-dash sequence');
-        $this->assertEquals(array('number' => '-1'), $input->getArguments(), '->parse() parses arguments with leading dashes as arguments after having encountered a double-dash sequence');
+        $input = new ArgvInput(['cli.php', '--', '-1']);
+        $input->bind(new InputDefinition([new InputArgument('number')]));
+        $this->assertEquals(['number' => '-1'], $input->getArguments(), '->parse() parses arguments with leading dashes as arguments after having encountered a double-dash sequence');
+
+        $input = new ArgvInput(['cli.php', '-f', 'bar', '--', '-1']);
+        $input->bind(new InputDefinition([new InputArgument('number'), new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)]));
+        $this->assertEquals(['foo' => 'bar'], $input->getOptions(), '->parse() parses arguments with leading dashes as options before having encountered a double-dash sequence');
+        $this->assertEquals(['number' => '-1'], $input->getArguments(), '->parse() parses arguments with leading dashes as arguments after having encountered a double-dash sequence');
     }
 
     public function testParseEmptyStringArgument()
     {
-        $input = new ArgvInput(array('cli.php', '-f', 'bar', ''));
-        $input->bind(new InputDefinition(array(new InputArgument('empty'), new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL))));
+        $input = new ArgvInput(['cli.php', '-f', 'bar', '']);
+        $input->bind(new InputDefinition([new InputArgument('empty'), new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)]));
 
-        $this->assertEquals(array('empty' => ''), $input->getArguments(), '->parse() parses empty string arguments');
+        $this->assertEquals(['empty' => ''], $input->getArguments(), '->parse() parses empty string arguments');
     }
 
     public function testGetFirstArgument()
     {
-        $input = new ArgvInput(array('cli.php', '-fbbar'));
+        $input = new ArgvInput(['cli.php', '-fbbar']);
         $this->assertNull($input->getFirstArgument(), '->getFirstArgument() returns null when there is no arguments');
 
-        $input = new ArgvInput(array('cli.php', '-fbbar', 'foo'));
+        $input = new ArgvInput(['cli.php', '-fbbar', 'foo']);
         $this->assertEquals('foo', $input->getFirstArgument(), '->getFirstArgument() returns the first argument from the raw input');
     }
 
     public function testHasParameterOption()
     {
-        $input = new ArgvInput(array('cli.php', '-f', 'foo'));
+        $input = new ArgvInput(['cli.php', '-f', 'foo']);
         $this->assertTrue($input->hasParameterOption('-f'), '->hasParameterOption() returns true if the given short option is in the raw input');
 
-        $input = new ArgvInput(array('cli.php', '-etest'));
+        $input = new ArgvInput(['cli.php', '-etest']);
         $this->assertTrue($input->hasParameterOption('-e'), '->hasParameterOption() returns true if the given short option is in the raw input');
         $this->assertFalse($input->hasParameterOption('-s'), '->hasParameterOption() returns true if the given short option is in the raw input');
 
-        $input = new ArgvInput(array('cli.php', '--foo', 'foo'));
+        $input = new ArgvInput(['cli.php', '--foo', 'foo']);
         $this->assertTrue($input->hasParameterOption('--foo'), '->hasParameterOption() returns true if the given short option is in the raw input');
 
-        $input = new ArgvInput(array('cli.php', 'foo'));
+        $input = new ArgvInput(['cli.php', 'foo']);
         $this->assertFalse($input->hasParameterOption('--foo'), '->hasParameterOption() returns false if the given short option is not in the raw input');
 
-        $input = new ArgvInput(array('cli.php', '--foo=bar'));
+        $input = new ArgvInput(['cli.php', '--foo=bar']);
         $this->assertTrue($input->hasParameterOption('--foo'), '->hasParameterOption() returns true if the given option with provided value is in the raw input');
     }
 
     public function testHasParameterOptionOnlyOptions()
     {
-        $input = new ArgvInput(array('cli.php', '-f', 'foo'));
+        $input = new ArgvInput(['cli.php', '-f', 'foo']);
         $this->assertTrue($input->hasParameterOption('-f', true), '->hasParameterOption() returns true if the given short option is in the raw input');
 
-        $input = new ArgvInput(array('cli.php', '--foo', '--', 'foo'));
+        $input = new ArgvInput(['cli.php', '--foo', '--', 'foo']);
         $this->assertTrue($input->hasParameterOption('--foo', true), '->hasParameterOption() returns true if the given long option is in the raw input');
 
-        $input = new ArgvInput(array('cli.php', '--foo=bar', 'foo'));
+        $input = new ArgvInput(['cli.php', '--foo=bar', 'foo']);
         $this->assertTrue($input->hasParameterOption('--foo', true), '->hasParameterOption() returns true if the given long option with provided value is in the raw input');
 
-        $input = new ArgvInput(array('cli.php', '--', '--foo'));
+        $input = new ArgvInput(['cli.php', '--', '--foo']);
         $this->assertFalse($input->hasParameterOption('--foo', true), '->hasParameterOption() returns false if the given option is in the raw input but after an end of options signal');
     }
 
     public function testHasParameterOptionEdgeCasesAndLimitations()
     {
-        $input = new ArgvInput(array('cli.php', '-fh'));
+        $input = new ArgvInput(['cli.php', '-fh']);
         // hasParameterOption does not know if the previous short option, -f,
         // takes a value or not. If -f takes a value, then -fh does NOT include
         // -h; Otherwise it does. Since we do not know which short options take
@@ -368,7 +368,7 @@ public function testHasParameterOptionEdgeCasesAndLimitations()
         // However, this is not supported.
         $this->assertFalse($input->hasParameterOption('-hf'), '->hasParameterOption() returns true if the given short option is in the raw input');
 
-        $input = new ArgvInput(array('cli.php', '-f', '-h'));
+        $input = new ArgvInput(['cli.php', '-f', '-h']);
         // If hasParameterOption('-fh') is supported for 'cli.php -fh', then
         // one might also expect that it should also be supported for
         // 'cli.php -f -h'. However, this is not supported.
@@ -377,23 +377,23 @@ public function testHasParameterOptionEdgeCasesAndLimitations()
 
     public function testNoWarningOnInvalidParameterOption()
     {
-        $input = new ArgvInput(array('cli.php', '-edev'));
+        $input = new ArgvInput(['cli.php', '-edev']);
 
-        $this->assertTrue($input->hasParameterOption(array('-e', '')));
+        $this->assertTrue($input->hasParameterOption(['-e', '']));
         // No warning thrown
-        $this->assertFalse($input->hasParameterOption(array('-m', '')));
+        $this->assertFalse($input->hasParameterOption(['-m', '']));
 
-        $this->assertEquals('dev', $input->getParameterOption(array('-e', '')));
+        $this->assertEquals('dev', $input->getParameterOption(['-e', '']));
         // No warning thrown
-        $this->assertFalse($input->getParameterOption(array('-m', '')));
+        $this->assertFalse($input->getParameterOption(['-m', '']));
     }
 
     public function testToString()
     {
-        $input = new ArgvInput(array('cli.php', '-f', 'foo'));
+        $input = new ArgvInput(['cli.php', '-f', 'foo']);
         $this->assertEquals('-f foo', (string) $input);
 
-        $input = new ArgvInput(array('cli.php', '-f', '--bar=foo', 'a b c d', "A\nB'C"));
+        $input = new ArgvInput(['cli.php', '-f', '--bar=foo', 'a b c d', "A\nB'C"]);
         $this->assertEquals('-f --bar=foo '.escapeshellarg('a b c d').' '.escapeshellarg("A\nB'C"), (string) $input);
     }
 
@@ -408,51 +408,51 @@ public function testGetParameterOptionEqualSign($argv, $key, $default, $onlyPara
 
     public function provideGetParameterOptionValues()
     {
-        return array(
-            array(array('app/console', 'foo:bar'), '-e', 'default', false, 'default'),
-            array(array('app/console', 'foo:bar', '-e', 'dev'), '-e', 'default', false, 'dev'),
-            array(array('app/console', 'foo:bar', '--env=dev'), '--env', 'default', false, 'dev'),
-            array(array('app/console', 'foo:bar', '-e', 'dev'), array('-e', '--env'), 'default', false, 'dev'),
-            array(array('app/console', 'foo:bar', '--env=dev'), array('-e', '--env'), 'default', false, 'dev'),
-            array(array('app/console', 'foo:bar', '--env=dev', '--en=1'), array('--en'), 'default', false, '1'),
-            array(array('app/console', 'foo:bar', '--env=dev', '', '--en=1'), array('--en'), 'default', false, '1'),
-            array(array('app/console', 'foo:bar', '--env', 'val'), '--env', 'default', false, 'val'),
-            array(array('app/console', 'foo:bar', '--env', 'val', '--dummy'), '--env', 'default', false, 'val'),
-            array(array('app/console', 'foo:bar', '--', '--env=dev'), '--env', 'default', false, 'dev'),
-            array(array('app/console', 'foo:bar', '--', '--env=dev'), '--env', 'default', true, 'default'),
-        );
+        return [
+            [['app/console', 'foo:bar'], '-e', 'default', false, 'default'],
+            [['app/console', 'foo:bar', '-e', 'dev'], '-e', 'default', false, 'dev'],
+            [['app/console', 'foo:bar', '--env=dev'], '--env', 'default', false, 'dev'],
+            [['app/console', 'foo:bar', '-e', 'dev'], ['-e', '--env'], 'default', false, 'dev'],
+            [['app/console', 'foo:bar', '--env=dev'], ['-e', '--env'], 'default', false, 'dev'],
+            [['app/console', 'foo:bar', '--env=dev', '--en=1'], ['--en'], 'default', false, '1'],
+            [['app/console', 'foo:bar', '--env=dev', '', '--en=1'], ['--en'], 'default', false, '1'],
+            [['app/console', 'foo:bar', '--env', 'val'], '--env', 'default', false, 'val'],
+            [['app/console', 'foo:bar', '--env', 'val', '--dummy'], '--env', 'default', false, 'val'],
+            [['app/console', 'foo:bar', '--', '--env=dev'], '--env', 'default', false, 'dev'],
+            [['app/console', 'foo:bar', '--', '--env=dev'], '--env', 'default', true, 'default'],
+        ];
     }
 
     public function testParseSingleDashAsArgument()
     {
-        $input = new ArgvInput(array('cli.php', '-'));
-        $input->bind(new InputDefinition(array(new InputArgument('file'))));
-        $this->assertEquals(array('file' => '-'), $input->getArguments(), '->parse() parses single dash as an argument');
+        $input = new ArgvInput(['cli.php', '-']);
+        $input->bind(new InputDefinition([new InputArgument('file')]));
+        $this->assertEquals(['file' => '-'], $input->getArguments(), '->parse() parses single dash as an argument');
     }
 
     public function testParseOptionWithValueOptionalGivenEmptyAndRequiredArgument()
     {
-        $input = new ArgvInput(array('cli.php', '--foo=', 'bar'));
-        $input->bind(new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED))));
-        $this->assertEquals(array('foo' => null), $input->getOptions(), '->parse() parses optional options with empty value as null');
-        $this->assertEquals(array('name' => 'bar'), $input->getArguments(), '->parse() parses required arguments');
-
-        $input = new ArgvInput(array('cli.php', '--foo=0', 'bar'));
-        $input->bind(new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED))));
-        $this->assertEquals(array('foo' => '0'), $input->getOptions(), '->parse() parses optional options with empty value as null');
-        $this->assertEquals(array('name' => 'bar'), $input->getArguments(), '->parse() parses required arguments');
+        $input = new ArgvInput(['cli.php', '--foo=', 'bar']);
+        $input->bind(new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED)]));
+        $this->assertEquals(['foo' => null], $input->getOptions(), '->parse() parses optional options with empty value as null');
+        $this->assertEquals(['name' => 'bar'], $input->getArguments(), '->parse() parses required arguments');
+
+        $input = new ArgvInput(['cli.php', '--foo=0', 'bar']);
+        $input->bind(new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::REQUIRED)]));
+        $this->assertEquals(['foo' => '0'], $input->getOptions(), '->parse() parses optional options with empty value as null');
+        $this->assertEquals(['name' => 'bar'], $input->getArguments(), '->parse() parses required arguments');
     }
 
     public function testParseOptionWithValueOptionalGivenEmptyAndOptionalArgument()
     {
-        $input = new ArgvInput(array('cli.php', '--foo=', 'bar'));
-        $input->bind(new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::OPTIONAL))));
-        $this->assertEquals(array('foo' => null), $input->getOptions(), '->parse() parses optional options with empty value as null');
-        $this->assertEquals(array('name' => 'bar'), $input->getArguments(), '->parse() parses optional arguments');
-
-        $input = new ArgvInput(array('cli.php', '--foo=0', 'bar'));
-        $input->bind(new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::OPTIONAL))));
-        $this->assertEquals(array('foo' => '0'), $input->getOptions(), '->parse() parses optional options with empty value as null');
-        $this->assertEquals(array('name' => 'bar'), $input->getArguments(), '->parse() parses optional arguments');
+        $input = new ArgvInput(['cli.php', '--foo=', 'bar']);
+        $input->bind(new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::OPTIONAL)]));
+        $this->assertEquals(['foo' => null], $input->getOptions(), '->parse() parses optional options with empty value as null');
+        $this->assertEquals(['name' => 'bar'], $input->getArguments(), '->parse() parses optional arguments');
+
+        $input = new ArgvInput(['cli.php', '--foo=0', 'bar']);
+        $input->bind(new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL), new InputArgument('name', InputArgument::OPTIONAL)]));
+        $this->assertEquals(['foo' => '0'], $input->getOptions(), '->parse() parses optional options with empty value as null');
+        $this->assertEquals(['name' => 'bar'], $input->getArguments(), '->parse() parses optional arguments');
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Input/ArrayInputTest.php b/src/Symfony/Component/Console/Tests/Input/ArrayInputTest.php
index 4bc83b3caffa..afe74831e367 100644
--- a/src/Symfony/Component/Console/Tests/Input/ArrayInputTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/ArrayInputTest.php
@@ -21,47 +21,47 @@ class ArrayInputTest extends TestCase
 {
     public function testGetFirstArgument()
     {
-        $input = new ArrayInput(array());
+        $input = new ArrayInput([]);
         $this->assertNull($input->getFirstArgument(), '->getFirstArgument() returns null if no argument were passed');
-        $input = new ArrayInput(array('name' => 'Fabien'));
+        $input = new ArrayInput(['name' => 'Fabien']);
         $this->assertEquals('Fabien', $input->getFirstArgument(), '->getFirstArgument() returns the first passed argument');
-        $input = new ArrayInput(array('--foo' => 'bar', 'name' => 'Fabien'));
+        $input = new ArrayInput(['--foo' => 'bar', 'name' => 'Fabien']);
         $this->assertEquals('Fabien', $input->getFirstArgument(), '->getFirstArgument() returns the first passed argument');
     }
 
     public function testHasParameterOption()
     {
-        $input = new ArrayInput(array('name' => 'Fabien', '--foo' => 'bar'));
+        $input = new ArrayInput(['name' => 'Fabien', '--foo' => 'bar']);
         $this->assertTrue($input->hasParameterOption('--foo'), '->hasParameterOption() returns true if an option is present in the passed parameters');
         $this->assertFalse($input->hasParameterOption('--bar'), '->hasParameterOption() returns false if an option is not present in the passed parameters');
 
-        $input = new ArrayInput(array('--foo'));
+        $input = new ArrayInput(['--foo']);
         $this->assertTrue($input->hasParameterOption('--foo'), '->hasParameterOption() returns true if an option is present in the passed parameters');
 
-        $input = new ArrayInput(array('--foo', '--', '--bar'));
+        $input = new ArrayInput(['--foo', '--', '--bar']);
         $this->assertTrue($input->hasParameterOption('--bar'), '->hasParameterOption() returns true if an option is present in the passed parameters');
         $this->assertFalse($input->hasParameterOption('--bar', true), '->hasParameterOption() returns false if an option is present in the passed parameters after an end of options signal');
     }
 
     public function testGetParameterOption()
     {
-        $input = new ArrayInput(array('name' => 'Fabien', '--foo' => 'bar'));
+        $input = new ArrayInput(['name' => 'Fabien', '--foo' => 'bar']);
         $this->assertEquals('bar', $input->getParameterOption('--foo'), '->getParameterOption() returns the option of specified name');
         $this->assertEquals('default', $input->getParameterOption('--bar', 'default'), '->getParameterOption() returns the default value if an option is not present in the passed parameters');
 
-        $input = new ArrayInput(array('Fabien', '--foo' => 'bar'));
+        $input = new ArrayInput(['Fabien', '--foo' => 'bar']);
         $this->assertEquals('bar', $input->getParameterOption('--foo'), '->getParameterOption() returns the option of specified name');
 
-        $input = new ArrayInput(array('--foo', '--', '--bar' => 'woop'));
+        $input = new ArrayInput(['--foo', '--', '--bar' => 'woop']);
         $this->assertEquals('woop', $input->getParameterOption('--bar'), '->getParameterOption() returns the correct value if an option is present in the passed parameters');
         $this->assertEquals('default', $input->getParameterOption('--bar', 'default', true), '->getParameterOption() returns the default value if an option is present in the passed parameters after an end of options signal');
     }
 
     public function testParseArguments()
     {
-        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'))));
+        $input = new ArrayInput(['name' => 'foo'], new InputDefinition([new InputArgument('name')]));
 
-        $this->assertEquals(array('name' => 'foo'), $input->getArguments(), '->parse() parses required arguments');
+        $this->assertEquals(['name' => 'foo'], $input->getArguments(), '->parse() parses required arguments');
     }
 
     /**
@@ -76,50 +76,50 @@ public function testParseOptions($input, $options, $expectedOptions, $message)
 
     public function provideOptions()
     {
-        return array(
-            array(
-                array('--foo' => 'bar'),
-                array(new InputOption('foo')),
-                array('foo' => 'bar'),
+        return [
+            [
+                ['--foo' => 'bar'],
+                [new InputOption('foo')],
+                ['foo' => 'bar'],
                 '->parse() parses long options',
-            ),
-            array(
-                array('--foo' => 'bar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL, '', 'default')),
-                array('foo' => 'bar'),
+            ],
+            [
+                ['--foo' => 'bar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL, '', 'default')],
+                ['foo' => 'bar'],
                 '->parse() parses long options with a default value',
-            ),
-            array(
-                array(),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL, '', 'default')),
-                array('foo' => 'default'),
+            ],
+            [
+                [],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL, '', 'default')],
+                ['foo' => 'default'],
                 '->parse() uses the default value for long options with value optional which are not passed',
-            ),
-            array(
-                array('--foo' => null),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL, '', 'default')),
-                array('foo' => null),
+            ],
+            [
+                ['--foo' => null],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL, '', 'default')],
+                ['foo' => null],
                 '->parse() parses long options with a default value',
-            ),
-            array(
-                array('-f' => 'bar'),
-                array(new InputOption('foo', 'f')),
-                array('foo' => 'bar'),
+            ],
+            [
+                ['-f' => 'bar'],
+                [new InputOption('foo', 'f')],
+                ['foo' => 'bar'],
                 '->parse() parses short options',
-            ),
-            array(
-                array('--' => null, '-f' => 'bar'),
-                array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL, '', 'default')),
-                array('foo' => 'default'),
+            ],
+            [
+                ['--' => null, '-f' => 'bar'],
+                [new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL, '', 'default')],
+                ['foo' => 'default'],
                 '->parse() does not parse opts after an end of options signal',
-            ),
-            array(
-                array('--' => null),
-                array(),
-                array(),
+            ],
+            [
+                ['--' => null],
+                [],
+                [],
                 '->parse() does not choke on end of options signal',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -139,39 +139,39 @@ public function testParseInvalidInput($parameters, $definition, $expectedExcepti
 
     public function provideInvalidInput()
     {
-        return array(
-            array(
-                array('foo' => 'foo'),
-                new InputDefinition(array(new InputArgument('name'))),
+        return [
+            [
+                ['foo' => 'foo'],
+                new InputDefinition([new InputArgument('name')]),
                 'The "foo" argument does not exist.',
-            ),
-            array(
-                array('--foo' => null),
-                new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED))),
+            ],
+            [
+                ['--foo' => null],
+                new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)]),
                 'The "--foo" option requires a value.',
-            ),
-            array(
-                array('--foo' => 'foo'),
+            ],
+            [
+                ['--foo' => 'foo'],
                 new InputDefinition(),
                 'The "--foo" option does not exist.',
-            ),
-            array(
-                array('-o' => 'foo'),
+            ],
+            [
+                ['-o' => 'foo'],
                 new InputDefinition(),
                 'The "-o" option does not exist.',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testToString()
     {
-        $input = new ArrayInput(array('-f' => null, '-b' => 'bar', '--foo' => 'b a z', '--lala' => null, 'test' => 'Foo', 'test2' => "A\nB'C"));
+        $input = new ArrayInput(['-f' => null, '-b' => 'bar', '--foo' => 'b a z', '--lala' => null, 'test' => 'Foo', 'test2' => "A\nB'C"]);
         $this->assertEquals('-f -b=bar --foo='.escapeshellarg('b a z').' --lala Foo '.escapeshellarg("A\nB'C"), (string) $input);
 
-        $input = new ArrayInput(array('-b' => array('bval_1', 'bval_2'), '--f' => array('fval_1', 'fval_2')));
+        $input = new ArrayInput(['-b' => ['bval_1', 'bval_2'], '--f' => ['fval_1', 'fval_2']]);
         $this->assertSame('-b=bval_1 -b=bval_2 --f=fval_1 --f=fval_2', (string) $input);
 
-        $input = new ArrayInput(array('array_arg' => array('val_1', 'val_2')));
+        $input = new ArrayInput(['array_arg' => ['val_1', 'val_2']]);
         $this->assertSame('val_1 val_2', (string) $input);
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Input/InputArgumentTest.php b/src/Symfony/Component/Console/Tests/Input/InputArgumentTest.php
index 66af98b33b66..7561e10abe36 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputArgumentTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputArgumentTest.php
@@ -54,10 +54,10 @@ public function testInvalidModes($mode)
 
     public function provideInvalidModes()
     {
-        return array(
-            array('ANOTHER_ONE'),
-            array(-1),
-        );
+        return [
+            ['ANOTHER_ONE'],
+            [-1],
+        ];
     }
 
     public function testIsArray()
@@ -91,8 +91,8 @@ public function testSetDefault()
         $this->assertEquals('another', $argument->getDefault(), '->setDefault() changes the default value');
 
         $argument = new InputArgument('foo', InputArgument::OPTIONAL | InputArgument::IS_ARRAY);
-        $argument->setDefault(array(1, 2));
-        $this->assertEquals(array(1, 2), $argument->getDefault(), '->setDefault() changes the default value');
+        $argument->setDefault([1, 2]);
+        $this->assertEquals([1, 2], $argument->getDefault(), '->setDefault() changes the default value');
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php b/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
index d9ff5435b2a7..197869767de0 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
@@ -35,10 +35,10 @@ public function testConstructorArguments()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $this->assertEquals(array(), $definition->getArguments(), '__construct() creates a new InputDefinition object');
+        $this->assertEquals([], $definition->getArguments(), '__construct() creates a new InputDefinition object');
 
-        $definition = new InputDefinition(array($this->foo, $this->bar));
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getArguments(), '__construct() takes an array of InputArgument objects as its first argument');
+        $definition = new InputDefinition([$this->foo, $this->bar]);
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getArguments(), '__construct() takes an array of InputArgument objects as its first argument');
     }
 
     public function testConstructorOptions()
@@ -46,10 +46,10 @@ public function testConstructorOptions()
         $this->initializeOptions();
 
         $definition = new InputDefinition();
-        $this->assertEquals(array(), $definition->getOptions(), '__construct() creates a new InputDefinition object');
+        $this->assertEquals([], $definition->getOptions(), '__construct() creates a new InputDefinition object');
 
-        $definition = new InputDefinition(array($this->foo, $this->bar));
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getOptions(), '__construct() takes an array of InputOption objects as its first argument');
+        $definition = new InputDefinition([$this->foo, $this->bar]);
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getOptions(), '__construct() takes an array of InputOption objects as its first argument');
     }
 
     public function testSetArguments()
@@ -57,11 +57,11 @@ public function testSetArguments()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->setArguments(array($this->foo));
-        $this->assertEquals(array('foo' => $this->foo), $definition->getArguments(), '->setArguments() sets the array of InputArgument objects');
-        $definition->setArguments(array($this->bar));
+        $definition->setArguments([$this->foo]);
+        $this->assertEquals(['foo' => $this->foo], $definition->getArguments(), '->setArguments() sets the array of InputArgument objects');
+        $definition->setArguments([$this->bar]);
 
-        $this->assertEquals(array('bar' => $this->bar), $definition->getArguments(), '->setArguments() clears all InputArgument objects');
+        $this->assertEquals(['bar' => $this->bar], $definition->getArguments(), '->setArguments() clears all InputArgument objects');
     }
 
     public function testAddArguments()
@@ -69,10 +69,10 @@ public function testAddArguments()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->addArguments(array($this->foo));
-        $this->assertEquals(array('foo' => $this->foo), $definition->getArguments(), '->addArguments() adds an array of InputArgument objects');
-        $definition->addArguments(array($this->bar));
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getArguments(), '->addArguments() does not clear existing InputArgument objects');
+        $definition->addArguments([$this->foo]);
+        $this->assertEquals(['foo' => $this->foo], $definition->getArguments(), '->addArguments() adds an array of InputArgument objects');
+        $definition->addArguments([$this->bar]);
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getArguments(), '->addArguments() does not clear existing InputArgument objects');
     }
 
     public function testAddArgument()
@@ -81,9 +81,9 @@ public function testAddArgument()
 
         $definition = new InputDefinition();
         $definition->addArgument($this->foo);
-        $this->assertEquals(array('foo' => $this->foo), $definition->getArguments(), '->addArgument() adds a InputArgument object');
+        $this->assertEquals(['foo' => $this->foo], $definition->getArguments(), '->addArgument() adds a InputArgument object');
         $definition->addArgument($this->bar);
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getArguments(), '->addArgument() adds a InputArgument object');
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getArguments(), '->addArgument() adds a InputArgument object');
     }
 
     /**
@@ -130,7 +130,7 @@ public function testGetArgument()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->addArguments(array($this->foo));
+        $definition->addArguments([$this->foo]);
         $this->assertEquals($this->foo, $definition->getArgument('foo'), '->getArgument() returns a InputArgument by its name');
     }
 
@@ -143,7 +143,7 @@ public function testGetInvalidArgument()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->addArguments(array($this->foo));
+        $definition->addArguments([$this->foo]);
         $definition->getArgument('bar');
     }
 
@@ -152,7 +152,7 @@ public function testHasArgument()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->addArguments(array($this->foo));
+        $definition->addArguments([$this->foo]);
 
         $this->assertTrue($definition->hasArgument('foo'), '->hasArgument() returns true if a InputArgument exists for the given name');
         $this->assertFalse($definition->hasArgument('bar'), '->hasArgument() returns false if a InputArgument exists for the given name');
@@ -182,28 +182,28 @@ public function testGetArgumentCount()
 
     public function testGetArgumentDefaults()
     {
-        $definition = new InputDefinition(array(
+        $definition = new InputDefinition([
             new InputArgument('foo1', InputArgument::OPTIONAL),
             new InputArgument('foo2', InputArgument::OPTIONAL, '', 'default'),
             new InputArgument('foo3', InputArgument::OPTIONAL | InputArgument::IS_ARRAY),
         //  new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', array(1, 2)),
-        ));
-        $this->assertEquals(array('foo1' => null, 'foo2' => 'default', 'foo3' => array()), $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
+        ]);
+        $this->assertEquals(['foo1' => null, 'foo2' => 'default', 'foo3' => []], $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
 
-        $definition = new InputDefinition(array(
-            new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', array(1, 2)),
-        ));
-        $this->assertEquals(array('foo4' => array(1, 2)), $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
+        $definition = new InputDefinition([
+            new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', [1, 2]),
+        ]);
+        $this->assertEquals(['foo4' => [1, 2]], $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
     }
 
     public function testSetOptions()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
-        $this->assertEquals(array('foo' => $this->foo), $definition->getOptions(), '->setOptions() sets the array of InputOption objects');
-        $definition->setOptions(array($this->bar));
-        $this->assertEquals(array('bar' => $this->bar), $definition->getOptions(), '->setOptions() clears all InputOption objects');
+        $definition = new InputDefinition([$this->foo]);
+        $this->assertEquals(['foo' => $this->foo], $definition->getOptions(), '->setOptions() sets the array of InputOption objects');
+        $definition->setOptions([$this->bar]);
+        $this->assertEquals(['bar' => $this->bar], $definition->getOptions(), '->setOptions() clears all InputOption objects');
     }
 
     /**
@@ -214,8 +214,8 @@ public function testSetOptionsClearsOptions()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
-        $definition->setOptions(array($this->bar));
+        $definition = new InputDefinition([$this->foo]);
+        $definition->setOptions([$this->bar]);
         $definition->getOptionForShortcut('f');
     }
 
@@ -223,10 +223,10 @@ public function testAddOptions()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
-        $this->assertEquals(array('foo' => $this->foo), $definition->getOptions(), '->addOptions() adds an array of InputOption objects');
-        $definition->addOptions(array($this->bar));
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getOptions(), '->addOptions() does not clear existing InputOption objects');
+        $definition = new InputDefinition([$this->foo]);
+        $this->assertEquals(['foo' => $this->foo], $definition->getOptions(), '->addOptions() adds an array of InputOption objects');
+        $definition->addOptions([$this->bar]);
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getOptions(), '->addOptions() does not clear existing InputOption objects');
     }
 
     public function testAddOption()
@@ -235,9 +235,9 @@ public function testAddOption()
10000

 
         $definition = new InputDefinition();
         $definition->addOption($this->foo);
-        $this->assertEquals(array('foo' => $this->foo), $definition->getOptions(), '->addOption() adds a InputOption object');
+        $this->assertEquals(['foo' => $this->foo], $definition->getOptions(), '->addOption() adds a InputOption object');
         $definition->addOption($this->bar);
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getOptions(), '->addOption() adds a InputOption object');
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getOptions(), '->addOption() adds a InputOption object');
     }
 
     /**
@@ -270,7 +270,7 @@ public function testGetOption()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $this->assertEquals($this->foo, $definition->getOption('foo'), '->getOption() returns a InputOption by its name');
     }
 
@@ -282,7 +282,7 @@ public function testGetInvalidOption()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $definition->getOption('bar');
     }
 
@@ -290,7 +290,7 @@ public function testHasOption()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $this->assertTrue($definition->hasOption('foo'), '->hasOption() returns true if a InputOption exists for the given name');
         $this->assertFalse($definition->hasOption('bar'), '->hasOption() returns false if a InputOption exists for the given name');
     }
@@ -299,7 +299,7 @@ public function testHasShortcut()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $this->assertTrue($definition->hasShortcut('f'), '->hasShortcut() returns true if a InputOption exists for the given shortcut');
         $this->assertFalse($definition->hasShortcut('b'), '->hasShortcut() returns false if a InputOption exists for the given shortcut');
     }
@@ -308,7 +308,7 @@ public function testGetOptionForShortcut()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $this->assertEquals($this->foo, $definition->getOptionForShortcut('f'), '->getOptionForShortcut() returns a InputOption by its shortcut');
     }
 
@@ -316,7 +316,7 @@ public function testGetOptionForMultiShortcut()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->multi));
+        $definition = new InputDefinition([$this->multi]);
         $this->assertEquals($this->multi, $definition->getOptionForShortcut('m'), '->getOptionForShortcut() returns a InputOption by its shortcut');
         $this->assertEquals($this->multi, $definition->getOptionForShortcut('mmm'), '->getOptionForShortcut() returns a InputOption by its shortcut');
     }
@@ -329,30 +329,30 @@ public function testGetOptionForInvalidShortcut()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $definition->getOptionForShortcut('l');
     }
 
     public function testGetOptionDefaults()
     {
-        $definition = new InputDefinition(array(
+        $definition = new InputDefinition([
             new InputOption('foo1', null, InputOption::VALUE_NONE),
             new InputOption('foo2', null, InputOption::VALUE_REQUIRED),
             new InputOption('foo3', null, InputOption::VALUE_REQUIRED, '', 'default'),
             new InputOption('foo4', null, InputOption::VALUE_OPTIONAL),
             new InputOption('foo5', null, InputOption::VALUE_OPTIONAL, '', 'default'),
             new InputOption('foo6', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY),
-            new InputOption('foo7', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY, '', array(1, 2)),
-        ));
-        $defaults = array(
+            new InputOption('foo7', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY, '', [1, 2]),
+        ]);
+        $defaults = [
             'foo1' => false,
             'foo2' => null,
             'foo3' => 'default',
             'foo4' => null,
             'foo5' => 'default',
-            'foo6' => array(),
-            'foo7' => array(1, 2),
-        );
+            'foo6' => [],
+            'foo7' => [1, 2],
+        ];
         $this->assertSame($defaults, $definition->getOptionDefaults(), '->getOptionDefaults() returns the default values for all options');
     }
 
@@ -366,24 +366,24 @@ public function testGetSynopsis(InputDefinition $definition, $expectedSynopsis,
 
     public function getGetSynopsisData()
     {
-        return array(
-            array(new InputDefinition(array(new InputOption('foo'))), '[--foo]', 'puts optional options in square brackets'),
-            array(new InputDefinition(array(new InputOption('foo', 'f'))), '[-f|--foo]', 'separates shortcut with a pipe'),
-            array(new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED))), '[-f|--foo FOO]', 'uses shortcut as value placeholder'),
-            array(new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL))), '[-f|--foo [FOO]]', 'puts optional values in square brackets'),
+        return [
+            [new InputDefinition([new InputOption('foo')]), '[--foo]', 'puts optional options in square brackets'],
+            [new InputDefinition([new InputOption('foo', 'f')]), '[-f|--foo]', 'separates shortcut with a pipe'],
+            [new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)]), '[-f|--foo FOO]', 'uses shortcut as value placeholder'],
+            [new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)]), '[-f|--foo [FOO]]', 'puts optional values in square brackets'],
 
-            array(new InputDefinition(array(new InputArgument('foo', InputArgument::REQUIRED))), '<foo>', 'puts arguments in angle brackets'),
-            array(new InputDefinition(array(new InputArgument('foo'))), '[<foo>]', 'puts optional arguments in square brackets'),
-            array(new InputDefinition(array(new InputArgument('foo', InputArgument::IS_ARRAY))), '[<foo>]...', 'uses an ellipsis for array arguments'),
-            array(new InputDefinition(array(new InputArgument('foo', InputArgument::REQUIRED | InputArgument::IS_ARRAY))), '<foo> (<foo>)...', 'uses parenthesis and ellipsis for required array arguments'),
+            [new InputDefinition([new InputArgument('foo', InputArgument::REQUIRED)]), '<foo>', 'puts arguments in angle brackets'],
+            [new InputDefinition([new InputArgument('foo')]), '[<foo>]', 'puts optional arguments in square brackets'],
+            [new InputDefinition([new InputArgument('foo', InputArgument::IS_ARRAY)]), '[<foo>]...', 'uses an ellipsis for array arguments'],
+            [new InputDefinition([new InputArgument('foo', InputArgument::REQUIRED | InputArgument::IS_ARRAY)]), '<foo> (<foo>)...', 'uses parenthesis and ellipsis for required array arguments'],
 
-            array(new InputDefinition(array(new InputOption('foo'), new InputArgument('foo', InputArgument::REQUIRED))), '[--foo] [--] <foo>', 'puts [--] between options and arguments'),
-        );
+            [new InputDefinition([new InputOption('foo'), new InputArgument('foo', InputArgument::REQUIRED)]), '[--foo] [--] <foo>', 'puts [--] between options and arguments'],
+        ];
     }
 
     public function testGetShortSynopsis()
     {
-        $definition = new InputDefinition(array(new InputOption('foo'), new InputOption('bar'), new InputArgument('cat')));
+        $definition = new InputDefinition([new InputOption('foo'), new InputOption('bar'), new InputArgument('cat')]);
         $this->assertEquals('[options] [--] [<cat>]', $definition->getSynopsis(true), '->getSynopsis(true) groups options in [options]');
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Input/InputOptionTest.php b/src/Symfony/Component/Console/Tests/Input/InputOptionTest.php
index 943bf607f5e5..413cb5270078 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputOptionTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputOptionTest.php
@@ -39,7 +39,7 @@ public function testShortcut()
         $this->assertEquals('f', $option->getShortcut(), '__construct() can take a shortcut as its second argument');
         $option = new InputOption('foo', '-f|-ff|fff');
         $this->assertEquals('f|ff|fff', $option->getShortcut(), '__construct() removes the leading - of the shortcuts');
-        $option = new InputOption('foo', array('f', 'ff', '-fff'));
+        $option = new InputOption('foo', ['f', 'ff', '-fff']);
         $this->assertEquals('f|ff|fff', $option->getShortcut(), '__construct() removes the leading - of the shortcuts');
         $option = new InputOption('foo');
         $this->assertNull($option->getShortcut(), '__construct() makes the shortcut null by default');
@@ -90,10 +90,10 @@ public function testInvalidModes($mode)
 
     public function provideInvalidModes()
     {
-        return array(
-            array('ANOTHER_ONE'),
-            array(-1),
-        );
+        return [
+            ['ANOTHER_ONE'],
+            [-1],
+        ];
     }
 
     /**
@@ -146,7 +146,7 @@ public function testGetDefault()
         $this->assertNull($option->getDefault(), '->getDefault() returns null if no default value is configured');
 
         $option = new InputOption('foo', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY);
-        $this->assertEquals(array(), $option->getDefault(), '->getDefault() returns an empty array if option is an array');
+        $this->assertEquals([], $option->getDefault(), '->getDefault() returns an empty array if option is an array');
 
         $option = new InputOption('foo', null, InputOption::VALUE_NONE);
         $this->assertFalse($option->getDefault(), '->getDefault() returns false if the option does not take a value');
@@ -161,8 +161,8 @@ public function testSetDefault()
         $this->assertEquals('another', $option->getDefault(), '->setDefault() changes the default value');
 
         $option = new InputOption('foo', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY);
-        $option->setDefault(array(1, 2));
-        $this->assertEquals(array(1, 2), $option->getDefault(), '->setDefault() changes the default value');
+        $option->setDefault([1, 2]);
+        $this->assertEquals([1, 2], $option->getDefault(), '->setDefault() changes the default value');
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Tests/Input/InputTest.php b/src/Symfony/Component/Console/Tests/Input/InputTest.php
index 7cf1d244a3e4..61608bf27cf4 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputTest.php
@@ -21,30 +21,30 @@ class InputTest extends TestCase
 {
     public function testConstructor()
     {
-        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'))));
+        $input = new ArrayInput(['name' => 'foo'], new InputDefinition([new InputArgument('name')]));
         $this->assertEquals('foo', $input->getArgument('name'), '->__construct() takes a InputDefinition as an argument');
     }
 
     public function testOptions()
     {
-        $input = new ArrayInput(array('--name' => 'foo'), new InputDefinition(array(new InputOption('name'))));
+        $input = new ArrayInput(['--name' => 'foo'], new InputDefinition([new InputOption('name')]));
         $this->assertEquals('foo', $input->getOption('name'), '->getOption() returns the value for the given option');
 
         $input->setOption('name', 'bar');
         $this->assertEquals('bar', $input->getOption('name'), '->setOption() sets the value for a given option');
-        $this->assertEquals(array('name' => 'bar'), $input->getOptions(), '->getOptions() returns all option values');
+        $this->assertEquals(['name' => 'bar'], $input->getOptions(), '->getOptions() returns all option values');
 
-        $input = new ArrayInput(array('--name' => 'foo'), new InputDefinition(array(new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default'))));
+        $input = new ArrayInput(['--name' => 'foo'], new InputDefinition([new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default')]));
         $this->assertEquals('default', $input->getOption('bar'), '->getOption() returns the default value for optional options');
-        $this->assertEquals(array('name' => 'foo', 'bar' => 'default'), $input->getOptions(), '->getOptions() returns all option values, even optional ones');
+        $this->assertEquals(['name' => 'foo', 'bar' => 'default'], $input->getOptions(), '->getOptions() returns all option values, even optional ones');
 
-        $input = new ArrayInput(array('--name' => 'foo', '--bar' => ''), new InputDefinition(array(new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default'))));
+        $input = new ArrayInput(['--name' => 'foo', '--bar' => ''], new InputDefinition([new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default')]));
         $this->assertEquals('', $input->getOption('bar'), '->getOption() returns null for options explicitly passed without value (or an empty value)');
-        $this->assertEquals(array('name' => 'foo', 'bar' => ''), $input->getOptions(), '->getOptions() returns all option values.');
+        $this->assertEquals(['name' => 'foo', 'bar' => ''], $input->getOptions(), '->getOptions() returns all option values.');
 
-        $input = new ArrayInput(array('--name' => 'foo', '--bar' => null), new InputDefinition(array(new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default'))));
+        $input = new ArrayInput(['--name' => 'foo', '--bar' => null], new InputDefinition([new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default')]));
         $this->assertNull($input->getOption('bar'), '->getOption() returns null for options explicitly passed without value (or an empty value)');
-        $this->assertEquals(array('name' => 'foo', 'bar' => null), $input->getOptions(), '->getOptions() returns all option values');
+        $this->assertEquals(['name' => 'foo', 'bar' => null], $input->getOptions(), '->getOptions() returns all option values');
     }
 
     /**
@@ -53,7 +53,7 @@ public function testOptions()
      */
     public function testSetInvalidOption()
     {
-        $input = new ArrayInput(array('--name' => 'foo'), new InputDefinition(array(new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default'))));
+        $input = new ArrayInput(['--name' => 'foo'], new InputDefinition([new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default')]));
         $input->setOption('foo', 'bar');
     }
 
@@ -63,22 +63,22 @@ public function testSetInvalidOption()
      */
     public function testGetInvalidOption()
     {
-        $input = new ArrayInput(array('--name' => 'foo'), new InputDefinition(array(new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default'))));
+        $input = new ArrayInput(['--name' => 'foo'], new InputDefinition([new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default')]));
         $input->getOption('foo');
     }
 
     public function testArguments()
     {
-        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'))));
+        $input = new ArrayInput(['name' => 'foo'], new InputDefinition([new InputArgument('name')]));
         $this->assertEquals('foo', $input->getArgument('name'), '->getArgument() returns the value for the given argument');
 
         $input->setArgument('name', 'bar');
         $this->assertEquals('bar', $input->getArgument('name'), '->setArgument() sets the value for a given argument');
-        $this->assertEquals(array('name' => 'bar'), $input->getArguments(), '->getArguments() returns all argument values');
+        $this->assertEquals(['name' => 'bar'], $input->getArguments(), '->getArguments() returns all argument values');
 
-        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default'))));
+        $input = new ArrayInput(['name' => 'foo'], new InputDefinition([new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default')]));
         $this->assertEquals('default', $input->getArgument('bar'), '->getArgument() returns the default value for optional arguments');
-        $this->assertEquals(array('name' => 'foo', 'bar' => 'default'), $input->getArguments(), '->getArguments() returns all argument values, even optional ones');
+        $this->assertEquals(['name' => 'foo', 'bar' => 'default'], $input->getArguments(), '->getArguments() returns all argument values, even optional ones');
     }
 
     /**
@@ -87,7 +87,7 @@ public function testArguments()
      */
     public function testSetInvalidArgument()
     {
-        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default'))));
+        $input = new ArrayInput(['name' => 'foo'], new InputDefinition([new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default')]));
         $input->setArgument('foo', 'bar');
     }
 
@@ -97,7 +97,7 @@ public function testSetInvalidArgument()
      */
     public function testGetInvalidArgument()
     {
-        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default'))));
+        $input = new ArrayInput(['name' => 'foo'], new InputDefinition([new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default')]));
         $input->getArgument('foo');
     }
 
@@ -107,8 +107,8 @@ public function testGetInvalidArgument()
      */
     public function testValidateWithMissingArguments()
     {
-        $input = new ArrayInput(array());
-        $input->bind(new InputDefinition(array(new InputArgument('name', InputArgument::REQUIRED))));
+        $input = new ArrayInput([]);
+        $input->bind(new InputDefinition([new InputArgument('name', InputArgument::REQUIRED)]));
         $input->validate();
     }
 
@@ -118,22 +118,22 @@ public function testValidateWithMissingArguments()
      */
     public function testValidateWithMissingRequiredArguments()
     {
-        $input = new ArrayInput(array('bar' => 'baz'));
-        $input->bind(new InputDefinition(array(new InputArgument('name', InputArgument::REQUIRED), new InputArgument('bar', InputArgument::OPTIONAL))));
+        $input = new ArrayInput(['bar' => 'baz']);
+        $input->bind(new InputDefinition([new InputArgument('name', InputArgument::REQUIRED), new InputArgument('bar', InputArgument::OPTIONAL)]));
         $input->validate();
     }
 
     public function testValidate()
     {
-        $input = new ArrayInput(array('name' => 'foo'));
-        $input->bind(new InputDefinition(array(new InputArgument('name', InputArgument::REQUIRED))));
+        $input = new ArrayInput(['name' => 'foo']);
+        $input->bind(new InputDefinition([new InputArgument('name', InputArgument::REQUIRED)]));
 
         $this->assertNull($input->validate());
     }
 
     public function testSetGetInteractive()
     {
-        $input = new ArrayInput(array());
+        $input = new ArrayInput([]);
         $this->assertTrue($input->isInteractive(), '->isInteractive() returns whether the input should be interactive or not');
         $input->setInteractive(false);
         $this->assertFalse($input->isInteractive(), '->setInteractive() changes the interactive flag');
@@ -141,7 +141,7 @@ public function testSetGetInteractive()
 
     public function testSetGetStream()
     {
-        $input = new ArrayInput(array());
+        $input = new ArrayInput([]);
         $stream = fopen('php://memory', 'r+', false);
         $input->setStream($stream);
         $this->assertSame($stream, $input->getStream());
diff --git a/src/Symfony/Component/Console/Tests/Input/StringInputTest.php b/src/Symfony/Component/Console/Tests/Input/StringInputTest.php
index f2e3467ef868..7f2189452608 100644
--- a/src/Symfony/Component/Console/Tests/Input/StringInputTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/StringInputTest.php
@@ -33,7 +33,7 @@ public function testTokenize($input, $tokens, $message)
     public function testInputOptionWithGivenString()
     {
         $definition = new InputDefinition(
-            array(new InputOption('foo', null, InputOption::VALUE_REQUIRED))
+            [new InputOption('foo', null, InputOption::VALUE_REQUIRED)]
         );
 
         // call to bind
@@ -44,33 +44,33 @@ public function testInputOptionWithGivenString()
 
     public function getTokenizeData()
     {
-        return array(
-            array('', array(), '->tokenize() parses an empty string'),
-            array('foo', array('foo'), '->tokenize() parses arguments'),
-            array('  foo  bar  ', array('foo', 'bar'), '->tokenize() ignores whitespaces between arguments'),
-            array('"quoted"', array('quoted'), '->tokenize() parses quoted arguments'),
-            array("'quoted'", array('quoted'), '->tokenize() parses quoted arguments'),
-            array("'a\rb\nc\td'", array("a\rb\nc\td"), '->tokenize() parses whitespace chars in strings'),
-            array("'a'\r'b'\n'c'\t'd'", array('a', 'b', 'c', 'd'), '->tokenize() parses whitespace chars between args as spaces'),
-            array('\"quoted\"', array('"quoted"'), '->tokenize() parses escaped-quoted arguments'),
-            array("\'quoted\'", array('\'quoted\''), '->tokenize() parses escaped-quoted arguments'),
-            array('-a', array('-a'), '->tokenize() parses short options'),
-            array('-azc', array('-azc'), '->tokenize() parses aggregated short options'),
-            array('-awithavalue', array('-awithavalue'), '->tokenize() parses short options with a value'),
-            array('-a"foo bar"', array('-afoo bar'), '->tokenize() parses short options with a value'),
-            array('-a"foo bar""foo bar"', array('-afoo barfoo bar'), '->tokenize() parses short options with a value'),
-            array('-a\'foo bar\'', array('-afoo bar'), '->tokenize() parses short options with a value'),
-            array('-a\'foo bar\'\'foo bar\'', array('-afoo barfoo bar'), '->tokenize() parses short options with a value'),
-            array('-a\'foo bar\'"foo bar"', array('-afoo barfoo bar'), '->tokenize() parses short options with a value'),
-            array('--long-option', array('--long-option'), '->tokenize() parses long options'),
-            array('--long-option=foo', array('--long-option=foo'), '->tokenize() parses long options with a value'),
-            array('--long-option="foo bar"', array('--long-option=foo bar'), '->tokenize() parses long options with a value'),
-            array('--long-option="foo bar""another"', array('--long-option=foo baranother'), '->tokenize() parses long options with a value'),
-            array('--long-option=\'foo bar\'', array('--long-option=foo bar'), '->tokenize() parses long options with a value'),
-            array("--long-option='foo bar''another'", array('--long-option=foo baranother'), '->tokenize() parses long options with a value'),
-            array("--long-option='foo bar'\"another\"", array('--long-option=foo baranother'), '->tokenize() parses long options with a value'),
-            array('foo -a -ffoo --long bar', array('foo', '-a', '-ffoo', '--long', 'bar'), '->tokenize() parses when several arguments and options'),
-        );
+        return [
+            ['', [], '->tokenize() parses an empty string'],
+            ['foo', ['foo'], '->tokenize() parses arguments'],
+            ['  foo  bar  ', ['foo', 'bar'], '->tokenize() ignores whitespaces between arguments'],
+            ['"quoted"', ['quoted'], '->tokenize() parses quoted arguments'],
+            ["'quoted'", ['quoted'], '->tokenize() parses quoted arguments'],
+            ["'a\rb\nc\td'", ["a\rb\nc\td"], '->tokenize() parses whitespace chars in strings'],
+            ["'a'\r'b'\n'c'\t'd'", ['a', 'b', 'c', 'd'], '->tokenize() parses whitespace chars between args as spaces'],
+            ['\"quoted\"', ['"quoted"'], '->tokenize() parses escaped-quoted arguments'],
+            ["\'quoted\'", ['\'quoted\''], '->tokenize() parses escaped-quoted arguments'],
+            ['-a', ['-a'], '->tokenize() parses short options'],
+            ['-azc', ['-azc'], '->tokenize() parses aggregated short options'],
+            ['-awithavalue', ['-awithavalue'], '->tokenize() parses short options with a value'],
+            ['-a"foo bar"', ['-afoo bar'], '->tokenize() parses short options with a value'],
+            ['-a"foo bar""foo bar"', ['-afoo barfoo bar'], '->tokenize() parses short options with a value'],
+            ['-a\'foo bar\'', ['-afoo bar'], '->tokenize() parses short options with a value'],
+            ['-a\'foo bar\'\'foo bar\'', ['-afoo barfoo bar'], '->tokenize() parses short options with a value'],
+            ['-a\'foo bar\'"foo bar"', ['-afoo barfoo bar'], '->tokenize() parses short options with a value'],
+            ['--long-option', ['--long-option'], '->tokenize() parses long options'],
+            ['--long-option=foo', ['--long-option=foo'], '->tokenize() parses long options with a value'],
+            ['--long-option="foo bar"', ['--long-option=foo bar'], '->tokenize() parses long options with a value'],
+            ['--long-option="foo bar""another"', ['--long-option=foo baranother'], '->tokenize() parses long options with a value'],
+            ['--long-option=\'foo bar\'', ['--long-option=foo bar'], '->tokenize() parses long options with a value'],
+            ["--long-option='foo bar''another'", ['--long-option=foo baranother'], '->tokenize() parses long options with a value'],
+            ["--long-option='foo bar'\"another\"", ['--long-option=foo baranother'], '->tokenize() parses long options with a value'],
+            ['foo -a -ffoo --long bar', ['foo', '-a', '-ffoo', '--long', 'bar'], '->tokenize() parses when several arguments and options'],
+        ];
     }
 
     public function testToString()
diff --git a/src/Symfony/Component/Console/Tests/Logger/ConsoleLoggerTest.php b/src/Symfony/Component/Console/Tests/Logger/ConsoleLoggerTest.php
index 95e78fc29f5a..efeec4234e95 100644
--- a/src/Symfony/Component/Console/Tests/Logger/ConsoleLoggerTest.php
+++ b/src/Symfony/Component/Console/Tests/Logger/ConsoleLoggerTest.php
@@ -39,7 +39,7 @@ public function getLogger()
     {
         $this->output = new DummyOutput(OutputInterface::VERBOSITY_VERBOSE);
 
-        return new ConsoleLogger($this->output, array(
+        return new ConsoleLogger($this->output, [
             LogLevel::EMERGENCY => OutputInterface::VERBOSITY_NORMAL,
             LogLevel::ALERT => OutputInterface::VERBOSITY_NORMAL,
             LogLevel::CRITICAL => OutputInterface::VERBOSITY_NORMAL,
@@ -48,7 +48,7 @@ public function getLogger()
             LogLevel::NOTICE => OutputInterface::VERBOSITY_NORMAL,
             LogLevel::INFO => OutputInterface::VERBOSITY_NORMAL,
             LogLevel::DEBUG => OutputInterface::VERBOSITY_NORMAL,
-        ));
+        ]);
     }
 
     /**
@@ -64,7 +64,7 @@ public function getLogs()
     /**
      * @dataProvider provideOutputMappingParams
      */
-    public function testOutputMapping($logLevel, $outputVerbosity, $isOutput, $addVerbosityLevelMap = array())
+    public function testOutputMapping($logLevel, $outputVerbosity, $isOutput, $addVerbosityLevelMap = [])
     {
         $out = new BufferedOutput($outputVerbosity);
         $logger = new ConsoleLogger($out, $addVerbosityLevelMap);
@@ -75,22 +75,22 @@ public function testOutputMapping($logLevel, $outputVerbosity, $isOutput, $addVe
 
     public function provideOutputMappingParams()
     {
-        $quietMap = array(LogLevel::EMERGENCY => OutputInterface::VERBOSITY_QUIET);
-
-        return array(
-            array(LogLevel::EMERGENCY, OutputInterface::VERBOSITY_NORMAL, true),
-            array(LogLevel::WARNING, OutputInterface::VERBOSITY_NORMAL, true),
-            array(LogLevel::INFO, OutputInterface::VERBOSITY_NORMAL, false),
-            array(LogLevel::DEBUG, OutputInterface::VERBOSITY_NORMAL, false),
-            array(LogLevel::INFO, OutputInterface::VERBOSITY_VERBOSE, false),
-            array(LogLevel::INFO, OutputInterface::VERBOSITY_VERY_VERBOSE, true),
-            array(LogLevel::DEBUG, OutputInterface::VERBOSITY_VERY_VERBOSE, false),
-            array(LogLevel::DEBUG, OutputInterface::VERBOSITY_DEBUG, true),
-            array(LogLevel::ALERT, OutputInterface::VERBOSITY_QUIET, false),
-            array(LogLevel::EMERGENCY, OutputInterface::VERBOSITY_QUIET, false),
-            array(LogLevel::ALERT, OutputInterface::VERBOSITY_QUIET, false, $quietMap),
-            array(LogLevel::EMERGENCY, OutputInterface::VERBOSITY_QUIET, true, $quietMap),
-        );
+        $quietMap = [LogLevel::EMERGENCY => OutputInterface::VERBOSITY_QUIET];
+
+        return [
+            [LogLevel::EMERGENCY, OutputInterface::VERBOSITY_NORMAL, true],
+            [LogLevel::WARNING, OutputInterface::VERBOSITY_NORMAL, true],
+            [LogLevel::INFO, OutputInterface::VERBOSITY_NORMAL, false],
+            [LogLevel::DEBUG, OutputInterface::VERBOSITY_NORMAL, false],
+            [LogLevel::INFO, OutputInterface::VERBOSITY_VERBOSE, false],
+            [LogLevel::INFO, OutputInterface::VERBOSITY_VERY_VERBOSE, true],
+            [LogLevel::DEBUG, OutputInterface::VERBOSITY_VERY_VERBOSE, false],
+            [LogLevel::DEBUG, OutputInterface::VERBOSITY_DEBUG, true],
+            [LogLevel::ALERT, OutputInterface::VERBOSITY_QUIET, false],
+            [LogLevel::EMERGENCY, OutputInterface::VERBOSITY_QUIET, false],
+            [LogLevel::ALERT, OutputInterface::VERBOSITY_QUIET, false, $quietMap],
+            [LogLevel::EMERGENCY, OutputInterface::VERBOSITY_QUIET, true, $quietMap],
+        ];
     }
 
     public function testHasErrored()
@@ -117,28 +117,28 @@ public function testImplements()
     public function testLogsAtAllLevels($level, $message)
     {
         $logger = $this->getLogger();
-        $logger->{$level}($message, array('user' => 'Bob'));
-        $logger->log($level, $message, array('user' => 'Bob'));
+        $logger->{$level}($message, ['user' => 'Bob']);
+        $logger->log($level, $message, ['user' => 'Bob']);
 
-        $expected = array(
+        $expected = [
             $level.' message of level '.$level.' with context: Bob',
             $level.' message of level '.$level.' with context: Bob',
-        );
+        ];
         $this->assertEquals($expected, $this->getLogs());
     }
 
     public function provideLevelsAndMessages()
     {
-        return array(
-            LogLevel::EMERGENCY => array(LogLevel::EMERGENCY, 'message of level emergency with context: {user}'),
-            LogLevel::ALERT => array(LogLevel::ALERT, 'message of level alert with context: {user}'),
-            LogLevel::CRITICAL => array(LogLevel::CRITICAL, 'message of level critical with context: {user}'),
-            LogLevel::ERROR => array(LogLevel::ERROR, 'message of level error with context: {user}'),
-            LogLevel::WARNING => array(LogLevel::WARNING, 'message of level warning with context: {user}'),
-            LogLevel::NOTICE => array(LogLevel::NOTICE, 'message of level notice with context: {user}'),
-            LogLevel::INFO => array(LogLevel::INFO, 'message of level info with context: {user}'),
-            LogLevel::DEBUG => array(LogLevel::DEBUG, 'message of level debug with context: {user}'),
-        );
+        return [
+            LogLevel::EMERGENCY => [LogLevel::EMERGENCY, 'message of level emergency with context: {user}'],
+            LogLevel::ALERT => [LogLevel::ALERT, 'message of level alert with context: {user}'],
+            LogLevel::CRITICAL => [LogLevel::CRITICAL, 'message of level critical with context: {user}'],
+            LogLevel::ERROR => [LogLevel::ERROR, 'message of level error with context: {user}'],
+            LogLevel::WARNING => [LogLevel::WARNING, 'message of level warning with context: {user}'],
+            LogLevel::NOTICE => [LogLevel::NOTICE, 'message of level notice with context: {user}'],
+            LogLevel::INFO => [LogLevel::INFO, 'message of level info with context: {user}'],
+            LogLevel::DEBUG => [LogLevel::DEBUG, 'message of level debug with context: {user}'],
+        ];
     }
 
     /**
@@ -153,56 +153,56 @@ public function testThrowsOnInvalidLevel()
     public function testContextReplacement()
     {
         $logger = $this->getLogger();
-        $logger->info('{Message {nothing} {user} {foo.bar} a}', array('user' => 'Bob', 'foo.bar' => 'Bar'));
+        $logger->info('{Message {nothing} {user} {foo.bar} a}', ['user' => 'Bob', 'foo.bar' => 'Bar']);
 
-        $expected = array('info {Message {nothing} Bob Bar a}');
+        $expected = ['info {Message {nothing} Bob Bar a}'];
         $this->assertEquals($expected, $this->getLogs());
     }
 
     public function testObjectCastToString()
     {
         if (method_exists($this, 'createPartialMock')) {
-            $dummy = $this->createPartialMock('Symfony\Component\Console\Tests\Logger\DummyTest', array('__toString'));
+            $dummy = $this->createPartialMock('Symfony\Component\Console\Tests\Logger\DummyTest', ['__toString']);
         } else {
-            $dummy = $this->getMock('Symfony\Component\Console\Tests\Logger\DummyTest', array('__toString'));
+            $dummy = $this->getMock('Symfony\Component\Console\Tests\Logger\DummyTest', ['__toString']);
         }
         $dummy->method('__toString')->will($this->returnValue('DUMMY'));
 
         $this->getLogger()->warning($dummy);
 
-        $expected = array('warning DUMMY');
+        $expected = ['warning DUMMY'];
         $this->assertEquals($expected, $this->getLogs());
     }
 
     public function testContextCanContainAnything()
     {
-        $context = array(
+        $context = [
             'bool' => true,
             'null' => null,
             'string' => 'Foo',
             'int' => 0,
             'float' => 0.5,
-            'nested' => array('with object' => new DummyTest()),
+            'nested' => ['with object' => new DummyTest()],
             'object' => new \DateTime(),
             'resource' => fopen('php://memory', 'r'),
-        );
+        ];
 
         $this->getLogger()->warning('Crazy context data', $context);
 
-        $expected = array('warning Crazy context data');
+        $expected = ['warning Crazy context data'];
         $this->assertEquals($expected, $this->getLogs());
     }
 
     public function testContextExceptionKeyCanBeExceptionOrOtherValues()
     {
         $logger = $this->getLogger();
-        $logger->warning('Random message', array('exception' => 'oops'));
-        $logger->critical('Uncaught Exception!', array('exception' => new \LogicException('Fail')));
+        $logger->warning('Random message', ['exception' => 'oops']);
+        $logger->critical('Uncaught Exception!', ['exception' => new \LogicException('Fail')]);
 
-        $expected = array(
+        $expected = [
             'warning Random message',
             'critical Uncaught Exception!',
-        );
+        ];
         $this->assertEquals($expected, $this->getLogs());
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Output/OutputTest.php b/src/Symfony/Component/Console/Tests/Output/OutputTest.php
index fbd4e8498908..58659f285608 100644
--- a/src/Symfony/Component/Console/Tests/Output/OutputTest.php
+++ b/src/Symfony/Component/Console/Tests/Output/OutputTest.php
@@ -77,7 +77,7 @@ public function testWriteWithVerbosityQuiet()
     public function testWriteAnArrayOfMessages()
     {
         $output = new TestOutput();
-        $output->writeln(array('foo', 'bar'));
+        $output->writeln(['foo', 'bar']);
         $this->assertEquals("foo\nbar\n", $output->output, '->writeln() can take an array of messages to output');
     }
 
@@ -93,10 +93,10 @@ public function testWriteRawMessage($message, $type, $expectedOutput)
 
     public function provideWriteArguments()
     {
-        return array(
-            array('<info>foo</info>', Output::OUTPUT_RAW, "<info>foo</info>\n"),
-            array('<info>foo</info>', Output::OUTPUT_PLAIN, "foo\n"),
-        );
+        return [
+            ['<info>foo</info>', Output::OUTPUT_RAW, "<info>foo</info>\n"],
+            ['<info>foo</info>', Output::OUTPUT_PLAIN, "foo\n"],
+        ];
     }
 
     public function testWriteWithDecorationTurnedOff()
@@ -109,7 +109,7 @@ public function testWriteWithDecorationTurnedOff()
 
     public function testWriteDecoratedMessage()
     {
-        $fooStyle = new OutputFormatterStyle('yellow', 'red', array('blink'));
+        $fooStyle = new OutputFormatterStyle('yellow', 'red', ['blink']);
         $output = new TestOutput();
         $output->getFormatter()->setStyle('FOO', $fooStyle);
         $output->setDecorated(true);
@@ -150,13 +150,13 @@ public function testWriteWithVerbosityOption($verbosity, $expected, $msg)
 
     public function verbosityProvider()
     {
-        return array(
-            array(Output::VERBOSITY_QUIET, '2', '->write() in QUIET mode only outputs when an explicit QUIET verbosity is passed'),
-            array(Output::VERBOSITY_NORMAL, '123', '->write() in NORMAL mode outputs anything below an explicit VERBOSE verbosity'),
-            array(Output::VERBOSITY_VERBOSE, '1234', '->write() in VERBOSE mode outputs anything below an explicit VERY_VERBOSE verbosity'),
-            array(Output::VERBOSITY_VERY_VERBOSE, '12345', '->write() in VERY_VERBOSE mode outputs anything below an explicit DEBUG verbosity'),
-            array(Output::VERBOSITY_DEBUG, '123456', '->write() in DEBUG mode outputs everything'),
-        );
+        return [
+            [Output::VERBOSITY_QUIET, '2', '->write() in QUIET mode only outputs when an explicit QUIET verbosity is passed'],
+            [Output::VERBOSITY_NORMAL, '123', '->write() in NORMAL mode outputs anything below an explicit VERBOSE verbosity'],
+            [Output::VERBOSITY_VERBOSE, '1234', '->write() in VERBOSE mode outputs anything below an explicit VERY_VERBOSE verbosity'],
+            [Output::VERBOSITY_VERY_VERBOSE, '12345', '->write() in VERY_VERBOSE mode outputs anything below an explicit DEBUG verbosity'],
+            [Output::VERBOSITY_DEBUG, '123456', '->write() in DEBUG mode outputs everything'],
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/Console/Tests/Style/SymfonyStyleTest.php b/src/Symfony/Component/Console/Tests/Style/SymfonyStyleTest.php
index 308030bbcf22..e6e061f4416b 100644
--- a/src/Symfony/Component/Console/Tests/Style/SymfonyStyleTest.php
+++ b/src/Symfony/Component/Console/Tests/Style/SymfonyStyleTest.php
@@ -48,7 +48,7 @@ public function testOutputs($inputCommandFilepath, $outputFilepath)
     {
         $code = require $inputCommandFilepath;
         $this->command->setCode($code);
-        $this->tester->execute(array(), array('interactive' => false, 'decorated' => false));
+        $this->tester->execute([], ['interactive' => false, 'decorated' => false]);
         $this->assertStringEqualsFile($outputFilepath, $this->tester->getDisplay(true));
     }
 
@@ -59,7 +59,7 @@ public function testInteractiveOutputs($inputCommandFilepath, $outputFilepath)
     {
         $code = require $inputCommandFilepath;
         $this->command->setCode($code);
-        $this->tester->execute(array(), array('interactive' => true, 'decorated' => false));
+        $this->tester->execute([], ['interactive' => true, 'decorated' => false]);
         $this->assertStringEqualsFile($outputFilepath, $this->tester->getDisplay(true));
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php b/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
index 57e7136d5580..74c3562001fc 100644
--- a/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
+++ b/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
@@ -31,7 +31,7 @@ protected function setUp()
         ;
 
         $this->tester = new ApplicationTester($this->application);
-        $this->tester->run(array('command' => 'foo', 'foo' => 'bar'), array('interactive' => false, 'decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE));
+        $this->tester->run(['command' => 'foo', 'foo' => 'bar'], ['interactive' => false, 'decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE]);
     }
 
     protected function tearDown()
diff --git a/src/Symfony/Component/Console/Tests/Tester/CommandTesterTest.php b/src/Symfony/Component/Console/Tests/Tester/CommandTesterTest.php
index da5f2e7aed03..8cad7f0385d0 100644
--- a/src/Symfony/Component/Console/Tests/Tester/CommandTesterTest.php
+++ b/src/Symfony/Component/Console/Tests/Tester/CommandTesterTest.php
@@ -34,7 +34,7 @@ protected function setUp()
         $this->command->setCode(function ($input, $output) { $output->writeln('foo'); });
 
         $this->tester = new CommandTester($this->command);
-        $this->tester->execute(array('foo' => 'bar'), array('interactive' => false, 'decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE));
+        $this->tester->execute(['foo' => 'bar'], ['interactive' => false, 'decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE]);
     }
 
     protected function tearDown()
@@ -84,19 +84,19 @@ public function testCommandFromApplication()
         $tester = new CommandTester($application->find('foo'));
 
         // check that there is no need to pass the command name here
-        $this->assertEquals(0, $tester->execute(array()));
+        $this->assertEquals(0, $tester->execute([]));
     }
 
     public function testCommandWithInputs()
     {
-        $questions = array(
+        $questions = [
             'What\'s your name?',
             'How are you?',
             'Where do you come from?',
-        );
+        ];
 
         $command = new Command('foo');
-        $command->setHelperSet(new HelperSet(array(new QuestionHelper())));
+        $command->setHelperSet(new HelperSet([new QuestionHelper()]));
         $command->setCode(function ($input, $output) use ($questions, $command) {
             $helper = $command->getHelper('question');
             $helper->ask($input, $output, new Question($questions[0]));
@@ -105,8 +105,8 @@ public function testCommandWithInputs()
         });
 
         $tester = new CommandTester($command);
-        $tester->setInputs(array('Bobby', 'Fine', 'France'));
-        $tester->execute(array());
+        $tester->setInputs(['Bobby', 'Fine', 'France']);
+        $tester->execute([]);
 
         $this->assertEquals(0, $tester->getStatusCode());
         $this->assertEquals(implode('', $questions), $tester->getDisplay(true));
@@ -114,14 +114,14 @@ public function testCommandWithInputs()
 
     public function testCommandWithDefaultInputs()
     {
-        $questions = array(
+        $questions = [
             'What\'s your name?',
             'How are you?',
             'Where do you come from?',
-        );
+        ];
 
         $command = new Command('foo');
-        $command->setHelperSet(new HelperSet(array(new QuestionHelper())));
+        $command->setHelperSet(new HelperSet([new QuestionHelper()]));
         $command->setCode(function ($input, $output) use ($questions, $command) {
             $helper = $command->getHelper('question');
             $helper->ask($input, $output, new Question($questions[0], 'Bobby'));
@@ -130,8 +130,8 @@ public function testCommandWithDefaultInputs()
         });
 
         $tester = new CommandTester($command);
-        $tester->setInputs(array('', '', ''));
-        $tester->execute(array());
+        $tester->setInputs(['', '', '']);
+        $tester->execute([]);
 
         $this->assertEquals(0, $tester->getStatusCode());
         $this->assertEquals(implode('', $questions), $tester->getDisplay(true));
@@ -143,14 +143,14 @@ public function testCommandWithDefaultInputs()
      */
     public function testCommandWithWrongInputsNumber()
     {
-        $questions = array(
+        $questions = [
             'What\'s your name?',
             'How are you?',
             'Where do you come from?',
-        );
+        ];
 
         $command = new Command('foo');
-        $command->setHelperSet(new HelperSet(array(new QuestionHelper())));
+        $command->setHelperSet(new HelperSet([new QuestionHelper()]));
         $command->setCode(function ($input, $output) use ($questions, $command) {
             $helper = $command->getHelper('question');
             $helper->ask($input, $output, new Question($questions[0]));
@@ -159,17 +159,17 @@ public function testCommandWithWrongInputsNumber()
         });
 
         $tester = new CommandTester($command);
-        $tester->setInputs(array('Bobby', 'Fine'));
-        $tester->execute(array());
+        $tester->setInputs(['Bobby', 'Fine']);
+        $tester->execute([]);
     }
 
     public function testSymfonyStyleCommandWithInputs()
     {
-        $questions = array(
+        $questions = [
             'What\'s your name?',
             'How are you?',
             'Where do you come from?',
-        );
+        ];
 
         $command = new Command('foo');
         $command->setCode(function ($input, $output) use ($questions, $command) {
@@ -180,8 +180,8 @@ public function testSymfonyStyleCommandWithInputs()
         });
 
         $tester = new CommandTester($command);
-        $tester->setInputs(array('Bobby', 'Fine', 'France'));
-        $tester->execute(array());
+        $tester->setInputs(['Bobby', 'Fine', 'France']);
+        $tester->execute([]);
 
         $this->assertEquals(0, $tester->getStatusCode());
     }
diff --git a/src/Symfony/Component/CssSelector/Node/FunctionNode.php b/src/Symfony/Component/CssSelector/Node/FunctionNode.php
index 50268255ce52..677affaa98d7 100644
--- a/src/Symfony/Component/CssSelector/Node/FunctionNode.php
+++ b/src/Symfony/Component/CssSelector/Node/FunctionNode.php
@@ -34,7 +34,7 @@ class FunctionNode extends AbstractNode
      * @param string        $name
      * @param Token[]       $arguments
      */
-    public function __construct(NodeInterface $selector, $name, array $arguments = array())
+    public function __construct(NodeInterface $selector, $name, array $arguments = [])
     {
         $this->selector = $selector;
         $this->name = strtolower($name);
diff --git a/src/Symfony/Component/CssSelector/Parser/Handler/StringHandler.php b/src/Symfony/Component/CssSelector/Parser/Handler/StringHandler.php
index 00155b04650d..9869176b3946 100644
--- a/src/Symfony/Component/CssSelector/Parser/Handler/StringHandler.php
+++ b/src/Symfony/Component/CssSelector/Parser/Handler/StringHandler.php
@@ -47,7 +47,7 @@ public function handle(Reader $reader, TokenStream $stream)
     {
         $quote = $reader->getSubstring(1);
 
-        if (!\in_array($quote, array("'", '"'))) {
+        if (!\in_array($quote, ["'", '"'])) {
             return false;
         }
 
diff --git a/src/Symfony/Component/CssSelector/Parser/Parser.php b/src/Symfony/Component/CssSelector/Parser/Parser.php
index 87c05a74b597..f07985ac52ab 100644
--- a/src/Symfony/Component/CssSelector/Parser/Parser.php
+++ b/src/Symfony/Component/CssSelector/Parser/Parser.php
@@ -76,22 +76,22 @@ public static function parseSeries(array $tokens)
 
         switch (true) {
             case 'odd' === $joined:
-                return array(2, 1);
+                return [2, 1];
             case 'even' === $joined:
-                return array(2, 0);
+                return [2, 0];
             case 'n' === $joined:
-                return array(1, 0);
+                return [1, 0];
             case false === strpos($joined, 'n'):
-                return array(0, $int($joined));
+                return [0, $int($joined)];
         }
 
         $split = explode('n', $joined);
         $first = isset($split[0]) ? $split[0] : null;
 
-        return array(
+        return [
             $first ? ('-' === $first || '+' === $first ? $int($first.'1') : $int($first)) : 1,
             isset($split[1]) && $split[1] ? $int($split[1]) : 0,
-        );
+        ];
     }
 
     /**
@@ -102,12 +102,12 @@ public static function parseSeries(array $tokens)
     private function parseSelectorList(TokenStream $stream)
     {
         $stream->skipWhitespace();
-        $selectors = array();
+        $selectors = [];
 
         while (true) {
             $selectors[] = $this->parserSelectorNode($stream);
 
-            if ($stream->getPeek()->isDelimiter(array(','))) {
+            if ($stream->getPeek()->isDelimiter([','])) {
                 $stream->getNext();
                 $stream->skipWhitespace();
             } else {
@@ -133,7 +133,7 @@ private function parserSelectorNode(TokenStream $stream)
             $stream->skipWhitespace();
             $peek = $stream->getPeek();
 
-            if ($peek->isFileEnd() || $peek->isDelimiter(array(','))) {
+            if ($peek->isFileEnd() || $peek->isDelimiter([','])) {
                 break;
             }
 
@@ -141,7 +141,7 @@ private function parserSelectorNode(TokenStream $stream)
                 throw SyntaxErrorException::pseudoElementFound($pseudoElement, 'not at the end of a selector');
             }
 
-            if ($peek->isDelimiter(array('+', '>', '~'))) {
+            if ($peek->isDelimiter(['+', '>', '~'])) {
                 $combinator = $stream->getNext()->getValue();
                 $stream->skipWhitespace();
             } else {
@@ -177,8 +177,8 @@ private function parseSimpleSelector(TokenStream $stream, $insideNegation = fals
             $peek = $stream->getPeek();
             if ($peek->isWhitespace()
                 || $peek->isFileEnd()
-                || $peek->isDelimiter(array(',', '+', '>', '~'))
-                || ($insideNegation && $peek->isDelimiter(array(')')))
+                || $peek->isDelimiter([',', '+', '>', '~'])
+                || ($insideNegation && $peek->isDelimiter([')']))
             ) {
                 break;
             }
@@ -189,16 +189,16 @@ private function parseSimpleSelector(TokenStream $stream, $insideNegation = fals
 
             if ($peek->isHash()) {
                 $result = new Node\HashNode($result, $stream->getNext()->getValue());
-            } elseif ($peek->isDelimiter(array('.'))) {
+            } elseif ($peek->isDelimiter(['.'])) {
                 $stream->getNext();
                 $result = new Node\ClassNode($result, $stream->getNextIdentifier());
-            } elseif ($peek->isDelimiter(array('['))) {
+            } elseif ($peek->isDelimiter(['['])) {
                 $stream->getNext();
                 $result = $this->parseAttributeNode($result, $stream);
-            } elseif ($peek->isDelimiter(array(':'))) {
+            } elseif ($peek->isDelimiter([':'])) {
                 $stream->getNext();
 
-                if ($stream->getPeek()->isDelimiter(array(':'))) {
+                if ($stream->getPeek()->isDelimiter([':'])) {
                     $stream->getNext();
                     $pseudoElement = $stream->getNextIdentifier();
 
@@ -206,7 +206,7 @@ private function parseSimpleSelector(TokenStream $stream, $insideNegation = fals
                 }
 
                 $identifier = $stream->getNextIdentifier();
-                if (\in_array(strtolower($identifier), array('first-line', 'first-letter', 'before', 'after'))) {
+                if (\in_array(strtolower($identifier), ['first-line', 'first-letter', 'before', 'after'])) {
                     // Special case: CSS 2.1 pseudo-elements can have a single ':'.
                     // Any new pseudo-element must have two.
                     $pseudoElement = $identifier;
@@ -214,7 +214,7 @@ private function parseSimpleSelector(TokenStream $stream, $insideNegation = fals
                     continue;
                 }
 
-                if (!$stream->getPeek()->isDelimiter(array('('))) {
+                if (!$stream->getPeek()->isDelimiter(['('])) {
                     $result = new Node\PseudoNode($result, $identifier);
 
                     continue;
@@ -235,13 +235,13 @@ private function parseSimpleSelector(TokenStream $stream, $insideNegation = fals
                         throw SyntaxErrorException::pseudoElementFound($argumentPseudoElement, 'inside ::not()');
                     }
 
-                    if (!$next->isDelimiter(array(')'))) {
+                    if (!$next->isDelimiter([')'])) {
                         throw SyntaxErrorException::unexpectedToken('")"', $next);
                     }
 
                     $result = new Node\NegationNode($result, $argument);
                 } else {
-                    $arguments = array();
+                    $arguments = [];
                     $next = null;
 
                     while (true) {
@@ -251,10 +251,10 @@ private function parseSimpleSelector(TokenStream $stream, $insideNegation = fals
                         if ($next->isIdentifier()
                             || $next->isString()
                             || $next->isNumber()
-                            || $next->isDelimiter(array('+', '-'))
+                            || $next->isDelimiter(['+', '-'])
                         ) {
                             $arguments[] = $next;
-                        } elseif ($next->isDelimiter(array(')'))) {
+                        } elseif ($next->isDelimiter([')'])) {
                             break;
                         } else {
                             throw SyntaxErrorException::unexpectedToken('an argument', $next);
@@ -276,7 +276,7 @@ private function parseSimpleSelector(TokenStream $stream, $insideNegation = fals
             throw SyntaxErrorException::unexpectedToken('selector', $stream->getPeek());
         }
 
-        return array($result, $pseudoElement);
+        return [$result, $pseudoElement];
     }
 
     /**
@@ -288,7 +288,7 @@ private function parseElementNode(TokenStream $stream)
     {
         $peek = $stream->getPeek();
 
-        if ($peek->isIdentifier() || $peek->isDelimiter(array('*'))) {
+        if ($peek->isIdentifier() || $peek->isDelimiter(['*'])) {
             if ($peek->isIdentifier()) {
                 $namespace = $stream->getNext()->getValue();
             } else {
@@ -296,7 +296,7 @@ private function parseElementNode(TokenStream $stream)
                 $namespace = null;
             }
 
-            if ($stream->getPeek()->isDelimiter(array('|'))) {
+            if ($stream->getPeek()->isDelimiter(['|'])) {
                 $stream->getNext();
                 $element = $stream->getNextIdentifierOrStar();
             } else {
@@ -322,14 +322,14 @@ private function parseAttributeNode(Node\NodeInterface $selector, TokenStream $s
         $stream->skipWhitespace();
         $attribute = $stream->getNextIdentifierOrStar();
 
-        if (null === $attribute && !$stream->getPeek()->isDelimiter(array('|'))) {
+        if (null === $attribute && !$stream->getPeek()->isDelimiter(['|'])) {
             throw SyntaxErrorException::unexpectedToken('"|"', $stream->getPeek());
         }
 
-        if ($stream->getPeek()->isDelimiter(array('|'))) {
+        if ($stream->getPeek()->isDelimiter(['|'])) {
             $stream->getNext();
 
-            if ($stream->getPeek()->isDelimiter(array('='))) {
+            if ($stream->getPeek()->isDelimiter(['='])) {
                 $namespace = null;
                 $stream->getNext();
                 $operator = '|=';
@@ -346,12 +346,12 @@ private function parseAttributeNode(Node\NodeInterface $selector, TokenStream $s
             $stream->skipWhitespace();
             $next = $stream->getNext();
 
-            if ($next->isDelimiter(array(']'))) {
+            if ($next->isDelimiter([']'])) {
                 return new Node\AttributeNode($selector, $namespace, $attribute, 'exists', null);
-            } elseif ($next->isDelimiter(array('='))) {
+            } elseif ($next->isDelimiter(['='])) {
                 $operator = '=';
-            } elseif ($next->isDelimiter(array('^', '$', '*', '~', '|', '!'))
-                && $stream->getPeek()->isDelimiter(array('='))
+            } elseif ($next->isDelimiter(['^', '$', '*', '~', '|', '!'])
+                && $stream->getPeek()->isDelimiter(['='])
             ) {
                 $operator = $next->getValue().'=';
                 $stream->getNext();
@@ -375,7 +375,7 @@ private function parseAttributeNode(Node\NodeInterface $selector, TokenStream $s
         $stream->skipWhitespace();
         $next = $stream->getNext();
 
-        if (!$next->isDelimiter(array(']'))) {
+        if (!$next->isDelimiter([']'])) {
             throw SyntaxErrorException::unexpectedToken('"]"', $next);
         }
 
diff --git a/src/Symfony/Component/CssSelector/Parser/Shortcut/ClassParser.php b/src/Symfony/Component/CssSelector/Parser/Shortcut/ClassParser.php
index c513de5ff12e..3b9200623198 100644
--- a/src/Symfony/Component/CssSelector/Parser/Shortcut/ClassParser.php
+++ b/src/Symfony/Component/CssSelector/Parser/Shortcut/ClassParser.php
@@ -41,11 +41,11 @@ public function parse($source)
         //     2 => string 'input' (length=5)
         //     3 => string 'ab6bd_field' (length=11)
         if (preg_match('/^(?:([a-z]++)\|)?+([\w-]++|\*)?+\.([\w-]++)$/i', trim($source), $matches)) {
-            return array(
+            return [
                 new SelectorNode(new ClassNode(new ElementNode($matches[1] ?: null, $matches[2] ?: null), $matches[3])),
-            );
+            ];
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Parser/Shortcut/ElementParser.php b/src/Symfony/Component/CssSelector/Parser/Shortcut/ElementParser.php
index c29f5e442e73..392c6aabd191 100644
--- a/src/Symfony/Component/CssSelector/Parser/Shortcut/ElementParser.php
+++ b/src/Symfony/Component/CssSelector/Parser/Shortcut/ElementParser.php
@@ -39,9 +39,9 @@ public function parse($source)
         //     1 => string 'testns' (length=6)
         //     2 => string 'testel' (length=6)
         if (preg_match('/^(?:([a-z]++)\|)?([\w-]++|\*)$/i', trim($source), $matches)) {
-            return array(new SelectorNode(new ElementNode($matches[1] ?: null, $matches[2])));
+            return [new SelectorNode(new ElementNode($matches[1] ?: null, $matches[2]))];
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Parser/Shortcut/EmptyStringParser.php b/src/Symfony/Component/CssSelector/Parser/Shortcut/EmptyStringParser.php
index 16d374af30cc..276b57405d0d 100644
--- a/src/Symfony/Component/CssSelector/Parser/Shortcut/EmptyStringParser.php
+++ b/src/Symfony/Component/CssSelector/Parser/Shortcut/EmptyStringParser.php
@@ -38,9 +38,9 @@ public function parse($source)
     {
         // Matches an empty string
         if ('' == $source) {
-            return array(new SelectorNode(new ElementNode(null, '*')));
+            return [new SelectorNode(new ElementNode(null, '*'))];
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Parser/Shortcut/HashParser.php b/src/Symfony/Component/CssSelector/Parser/Shortcut/HashParser.php
index 3f3883bb8d2e..0ffcb6deefc7 100644
--- a/src/Symfony/Component/CssSelector/Parser/Shortcut/HashParser.php
+++ b/src/Symfony/Component/CssSelector/Parser/Shortcut/HashParser.php
@@ -41,11 +41,11 @@ public function parse($source)
         //     2 => string 'input' (length=5)
         //     3 => string 'ab6bd_field' (length=11)
         if (preg_match('/^(?:([a-z]++)\|)?+([\w-]++|\*)?+#([\w-]++)$/i', trim($source), $matches)) {
-            return array(
+            return [
                 new SelectorNode(new HashNode(new ElementNode($matches[1] ?: null, $matches[2] ?: null), $matches[3])),
-            );
+            ];
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Parser/Token.php b/src/Symfony/Component/CssSelector/Parser/Token.php
index 72baae776dab..d641da86561a 100644
--- a/src/Symfony/Component/CssSelector/Parser/Token.php
+++ b/src/Symfony/Component/CssSelector/Parser/Token.php
@@ -82,7 +82,7 @@ public function isFileEnd()
     /**
      * @return bool
      */
-    public function isDelimiter(array $values = array())
+    public function isDelimiter(array $values = [])
     {
         if (self::TYPE_DELIMITER !== $this->type) {
             return false;
diff --git a/src/Symfony/Component/CssSelector/Parser/TokenStream.php b/src/Symfony/Component/CssSelector/Parser/TokenStream.php
index d2aee541cd0c..843e330b523e 100644
--- a/src/Symfony/Component/CssSelector/Parser/TokenStream.php
+++ b/src/Symfony/Component/CssSelector/Parser/TokenStream.php
@@ -29,12 +29,12 @@ class TokenStream
     /**
      * @var Token[]
      */
-    private $tokens = array();
+    private $tokens = [];
 
     /**
      * @var Token[]
      */
-    private $used = array();
+    private $used = [];
 
     /**
      * @var int
@@ -154,7 +154,7 @@ public function getNextIdentifierOrStar()
             return $next->getValue();
         }
 
-        if ($next->isDelimiter(array('*'))) {
+        if ($next->isDelimiter(['*'])) {
             return;
         }
 
diff --git a/src/Symfony/Component/CssSelector/Parser/Tokenizer/Tokenizer.php b/src/Symfony/Component/CssSelector/Parser/Tokenizer/Tokenizer.php
index e32b4d20ce9f..fc65bc68463f 100644
--- a/src/Symfony/Component/CssSelector/Parser/Tokenizer/Tokenizer.php
+++ b/src/Symfony/Component/CssSelector/Parser/Tokenizer/Tokenizer.php
@@ -38,14 +38,14 @@ public function __construct()
         $patterns = new TokenizerPatterns();
         $escaping = new TokenizerEscaping($patterns);
 
-        $this->handlers = array(
+        $this->handlers = [
             new Handler\WhitespaceHandler(),
             new Handler\IdentifierHandler($patterns, $escaping),
             new Handler\HashHandler($patterns, $escaping),
             new Handler\StringHandler($patterns, $escaping),
             new Handler\NumberHandler($patterns),
             new Handler\CommentHandler(),
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/CssSelector/Tests/CssSelectorConverterTest.php b/src/Symfony/Component/CssSelector/Tests/CssSelectorConverterTest.php
index a3eea7ad2186..cd0fd785e53d 100644
--- a/src/Symfony/Component/CssSelector/Tests/CssSelectorConverterTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/CssSelectorConverterTest.php
@@ -55,22 +55,22 @@ public function testCssToXPathWithoutPrefix($css, $xpath)
 
     public function getCssToXPathWithoutPrefixTestData()
     {
-        return array(
-            array('h1', 'h1'),
-            array('foo|h1', 'foo:h1'),
-            array('h1, h2, h3', 'h1 | h2 | h3'),
-            array('h1:nth-child(3n+1)', "*/*[(name() = 'h1') and (position() - 1 >= 0 and (position() - 1) mod 3 = 0)]"),
-            array('h1 > p', 'h1/p'),
-            array('h1#foo', "h1[@id = 'foo']"),
-            array('h1.foo', "h1[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"),
-            array('h1[class*="foo bar"]', "h1[@class and contains(@class, 'foo bar')]"),
-            array('h1[foo|class*="foo bar"]', "h1[@foo:class and contains(@foo:class, 'foo bar')]"),
-            array('h1[class]', 'h1[@class]'),
-            array('h1 .foo', "h1/descendant-or-self::*/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"),
-            array('h1 #foo', "h1/descendant-or-self::*/*[@id = 'foo']"),
-            array('h1 [class*=foo]', "h1/descendant-or-self::*/*[@class and contains(@class, 'foo')]"),
-            array('div>.foo', "div/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"),
-            array('div > .foo', "div/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"),
-        );
+        return [
+            ['h1', 'h1'],
+            ['foo|h1', 'foo:h1'],
+            ['h1, h2, h3', 'h1 | h2 | h3'],
+            ['h1:nth-child(3n+1)', "*/*[(name() = 'h1') and (position() - 1 >= 0 and (position() - 1) mod 3 = 0)]"],
+            ['h1 > p', 'h1/p'],
+            ['h1#foo', "h1[
17AE
@id = 'foo']"],
+            ['h1.foo', "h1[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"],
+            ['h1[class*="foo bar"]', "h1[@class and contains(@class, 'foo bar')]"],
+            ['h1[foo|class*="foo bar"]', "h1[@foo:class and contains(@foo:class, 'foo bar')]"],
+            ['h1[class]', 'h1[@class]'],
+            ['h1 .foo', "h1/descendant-or-self::*/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"],
+            ['h1 #foo', "h1/descendant-or-self::*/*[@id = 'foo']"],
+            ['h1 [class*=foo]', "h1/descendant-or-self::*/*[@class and contains(@class, 'foo')]"],
+            ['div>.foo', "div/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"],
+            ['div > .foo', "div/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/AttributeNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/AttributeNodeTest.php
index 1fd090f5a6e8..4d60074061f0 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/AttributeNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/AttributeNodeTest.php
@@ -18,20 +18,20 @@ class AttributeNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new AttributeNode(new ElementNode(), null, 'attribute', 'exists', null), 'Attribute[Element[*][attribute]]'),
-            array(new AttributeNode(new ElementNode(), null, 'attribute', '$=', 'value'), "Attribute[Element[*][attribute $= 'value']]"),
-            array(new AttributeNode(new ElementNode(), 'namespace', 'attribute', '$=', 'value'), "Attribute[Element[*][namespace|attribute $= 'value']]"),
-        );
+        return [
+            [new AttributeNode(new ElementNode(), null, 'attribute', 'exists', null), 'Attribute[Element[*][attribute]]'],
+            [new AttributeNode(new ElementNode(), null, 'attribute', '$=', 'value'), "Attribute[Element[*][attribute $= 'value']]"],
+            [new AttributeNode(new ElementNode(), 'namespace', 'attribute', '$=', 'value'), "Attribute[Element[*][namespace|attribute $= 'value']]"],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new AttributeNode(new ElementNode(), null, 'attribute', 'exists', null), 10),
-            array(new AttributeNode(new ElementNode(null, 'element'), null, 'attribute', 'exists', null), 11),
-            array(new AttributeNode(new ElementNode(), null, 'attribute', '$=', 'value'), 10),
-            array(new AttributeNode(new ElementNode(), 'namespace', 'attribute', '$=', 'value'), 10),
-        );
+        return [
+            [new AttributeNode(new ElementNode(), null, 'attribute', 'exists', null), 10],
+            [new AttributeNode(new ElementNode(null, 'element'), null, 'attribute', 'exists', null), 11],
+            [new AttributeNode(new ElementNode(), null, 'attribute', '$=', 'value'), 10],
+            [new AttributeNode(new ElementNode(), 'namespace', 'attribute', '$=', 'value'), 10],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/ClassNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/ClassNodeTest.php
index e0ab45accc31..aa80c92792f3 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/ClassNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/ClassNodeTest.php
@@ -18,16 +18,16 @@ class ClassNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new ClassNode(new ElementNode(), 'class'), 'Class[Element[*].class]'),
-        );
+        return [
+            [new ClassNode(new ElementNode(), 'class'), 'Class[Element[*].class]'],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new ClassNode(new ElementNode(), 'class'), 10),
-            array(new ClassNode(new ElementNode(null, 'element'), 'class'), 11),
-        );
+        return [
+            [new ClassNode(new ElementNode(), 'class'), 10],
+            [new ClassNode(new ElementNode(null, 'element'), 'class'), 11],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/CombinedSelectorNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/CombinedSelectorNodeTest.php
index 9547298a6fdf..435eaa6aa698 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/CombinedSelectorNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/CombinedSelectorNodeTest.php
@@ -18,18 +18,18 @@ class CombinedSelectorNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new CombinedSelectorNode(new ElementNode(), '>', new ElementNode()), 'CombinedSelector[Element[*] > Element[*]]'),
-            array(new CombinedSelectorNode(new ElementNode(), ' ', new ElementNode()), 'CombinedSelector[Element[*] <followed> Element[*]]'),
-        );
+        return [
+            [new CombinedSelectorNode(new ElementNode(), '>', new ElementNode()), 'CombinedSelector[Element[*] > Element[*]]'],
+            [new CombinedSelectorNode(new ElementNode(), ' ', new ElementNode()), 'CombinedSelector[Element[*] <followed> Element[*]]'],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new CombinedSelectorNode(new ElementNode(), '>', new ElementNode()), 0),
-            array(new CombinedSelectorNode(new ElementNode(null, 'element'), '>', new ElementNode()), 1),
-            array(new CombinedSelectorNode(new ElementNode(null, 'element'), '>', new ElementNode(null, 'element')), 2),
-        );
+        return [
+            [new CombinedSelectorNode(new ElementNode(), '>', new ElementNode()), 0],
+            [new CombinedSelectorNode(new ElementNode(null, 'element'), '>', new ElementNode()), 1],
+            [new
F41A
 CombinedSelectorNode(new ElementNode(null, 'element'), '>', new ElementNode(null, 'element')), 2],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/ElementNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/ElementNodeTest.php
index 6d2478932056..e0797ff09cf5 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/ElementNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/ElementNodeTest.php
@@ -17,19 +17,19 @@ class ElementNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new ElementNode(), 'Element[*]'),
-            array(new ElementNode(null, 'element'), 'Element[element]'),
-            array(new ElementNode('namespace', 'element'), 'Element[namespace|element]'),
-        );
+        return [
+            [new ElementNode(), 'Element[*]'],
+            [new ElementNode(null, 'element'), 'Element[element]'],
+            [new ElementNode('namespace', 'element'), 'Element[namespace|element]'],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new ElementNode(), 0),
-            array(new ElementNode(null, 'element'), 1),
-            array(new ElementNode('namespace', 'element'), 1),
-        );
+        return [
+            [new ElementNode(), 0],
+            [new ElementNode(null, 'element'), 1],
+            [new ElementNode('namespace', 'element'), 1],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/FunctionNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/FunctionNodeTest.php
index ee3ce51ba549..0932393e1aa1 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/FunctionNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/FunctionNodeTest.php
@@ -19,29 +19,29 @@ class FunctionNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new FunctionNode(new ElementNode(), 'function'), 'Function[Element[*]:function()]'),
-            array(new FunctionNode(new ElementNode(), 'function', array(
+        return [
+            [new FunctionNode(new ElementNode(), 'function'), 'Function[Element[*]:function()]'],
+            [new FunctionNode(new ElementNode(), 'function', [
                 new Token(Token::TYPE_IDENTIFIER, 'value', 0),
-            )), "Function[Element[*]:function(['value'])]"),
-            array(new FunctionNode(new ElementNode(), 'function', array(
+            ]), "Function[Element[*]:function(['value'])]"],
+            [new FunctionNode(new ElementNode(), 'function', [
                 new Token(Token::TYPE_STRING, 'value1', 0),
                 new Token(Token::TYPE_NUMBER, 'value2', 0),
-            )), "Function[Element[*]:function(['value1', 'value2'])]"),
-        );
+            ]), "Function[Element[*]:function(['value1', 'value2'])]"],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new FunctionNode(new ElementNode(), 'function'), 10),
-            array(new FunctionNode(new ElementNode(), 'function', array(
+        return [
+            [new FunctionNode(new ElementNode(), 'function'), 10],
+            [new FunctionNode(new ElementNode(), 'function', [
                 new Token(Token::TYPE_IDENTIFIER, 'value', 0),
-            )), 10),
-            array(new FunctionNode(new ElementNode(), 'function', array(
+            ]), 10],
+            [new FunctionNode(new ElementNode(), 'function', [
                 new Token(Token::TYPE_STRING, 'value1', 0),
                 new Token(Token::TYPE_NUMBER, 'value2', 0),
-            )), 10),
-        );
+            ]), 10],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/HashNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/HashNodeTest.php
index 3bc74da9459c..ad6765b8625c 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/HashNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/HashNodeTest.php
@@ -18,16 +18,16 @@ class HashNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new HashNode(new ElementNode(), 'id'), 'Hash[Element[*]#id]'),
-        );
+        return [
+            [new HashNode(new ElementNode(), 'id'), 'Hash[Element[*]#id]'],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new HashNode(new ElementNode(), 'id'), 100),
-            array(new HashNode(new ElementNode(null, 'id'), 'class'), 101),
-        );
+        return [
+            [new HashNode(new ElementNode(), 'id'), 100],
+            [new HashNode(new ElementNode(null, 'id'), 'class'), 101],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/NegationNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/NegationNodeTest.php
index ed4d2482c391..90b684ceec8b 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/NegationNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/NegationNodeTest.php
@@ -19,15 +19,15 @@ class NegationNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new NegationNode(new ElementNode(), new ClassNode(new ElementNode(), 'class')), 'Negation[Element[*]:not(Class[Element[*].class])]'),
-        );
+        return [
+            [new NegationNode(new ElementNode(), new ClassNode(new ElementNode(), 'class')), 'Negation[Element[*]:not(Class[Element[*].class])]'],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new NegationNode(new ElementNode(), new ClassNode(new ElementNode(), 'class')), 10),
-        );
+        return [
+            [new NegationNode(new ElementNode(), new ClassNode(new ElementNode(), 'class')), 10],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/PseudoNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/PseudoNodeTest.php
index bc57813cc8fe..4e78776c02a4 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/PseudoNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/PseudoNodeTest.php
@@ -18,15 +18,15 @@ class PseudoNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new PseudoNode(new ElementNode(), 'pseudo'), 'Pseudo[Element[*]:pseudo]'),
-        );
+        return [
+            [new PseudoNode(new ElementNode(), 'pseudo'), 'Pseudo[Element[*]:pseudo]'],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new PseudoNode(new ElementNode(), 'pseudo'), 10),
-        );
+        return [
+            [new PseudoNode(new ElementNode(), 'pseudo'), 10],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/SelectorNodeTest.php b/src/Symfony/Component/CssSelector/Tests/Node/SelectorNodeTest.php
index 5badf71d16d1..85e3bdac3fde 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/SelectorNodeTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/SelectorNodeTest.php
@@ -18,17 +18,17 @@ class SelectorNodeTest extends AbstractNodeTest
 {
     public function getToStringConversionTestData()
     {
-        return array(
-            array(new SelectorNode(new ElementNode()), 'Selector[Element[*]]'),
-            array(new SelectorNode(new ElementNode(), 'pseudo'), 'Selector[Element[*]::pseudo]'),
-        );
+        return [
+            [new SelectorNode(new ElementNode()), 'Selector[Element[*]]'],
+            [new SelectorNode(new ElementNode(), 'pseudo'), 'Selector[Element[*]::pseudo]'],
+        ];
     }
 
     public function getSpecificityValueTestData()
     {
-        return array(
-            array(new SelectorNode(new ElementNode()), 0),
-            array(new SelectorNode(new ElementNode(), 'pseudo'), 1),
-        );
+        return [
+            [new SelectorNode(new ElementNode()), 0],
+            [new SelectorNode(new ElementNode(), 'pseudo'), 1],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Node/SpecificityTest.php b/src/Symfony/Component/CssSelector/Tests/Node/SpecificityTest.php
index b58eb8929c85..bf48d49ffdbd 100644
--- a/src/Symfony/Component/CssSelector/Tests/Node/SpecificityTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Node/SpecificityTest.php
@@ -30,13 +30,13 @@ public function testPlusValue(Specificity $specificity, $value)
 
     public function getValueTestData()
     {
-        return array(
-            array(new Specificity(0, 0, 0), 0),
-            array(new Specificity(0, 0, 2), 2),
-            array(new Specificity(0, 3, 0), 30),
-            array(new Specificity(4, 0, 0), 400),
-            array(new Specificity(4, 3, 2), 432),
-        );
+        return [
+            [new Specificity(0, 0, 0), 0],
+            [new Specificity(0, 0, 2), 2],
+            [new Specificity(0, 3, 0), 30],
+            [new Specificity(4, 0, 0), 400],
+            [new Specificity(4, 3, 2), 432],
+        ];
     }
 
     /** @dataProvider getCompareTestData */
@@ -47,17 +47,17 @@ public function testCompareTo(Specificity $a, Specificity $b, $result)
 
     public function getCompareTestData()
     {
-        return array(
-            array(new Specificity(0, 0, 0), new Specificity(0, 0, 0), 0),
-            array(new Specificity(0, 0, 1), new Specificity(0, 0, 1), 0),
-            array(new Specificity(0, 0, 2), new Specificity(0, 0, 1), 1),
-            array(new Specificity(0, 0, 2), new Specificity(0, 0, 3), -1),
-            array(new Specificity(0, 4, 0), new Specificity(0, 4, 0), 0),
-            array(new Specificity(0, 6, 0), new Specificity(0, 5, 11), 1),
-            array(new Specificity(0, 7, 0), new Specificity(0, 8, 0), -1),
-            array(new Specificity(9, 0, 0), new Specificity(9, 0, 0), 0),
-            array(new Specificity(11, 0, 0), new Specificity(10, 11, 0), 1),
-            array(new Specificity(12, 11, 0), new Specificity(13, 0, 0), -1),
-        );
+        return [
+            [new Specificity(0, 0, 0), new Specificity(0, 0, 0), 0],
+            [new Specificity(0, 0, 1), new Specificity(0, 0, 1), 0],
+            [new Specificity(0, 0, 2), new Specificity(0, 0, 1), 1],
+            [new Specificity(0, 0, 2), new Specificity(0, 0, 3), -1],
+            [new Specificity(0, 4, 0), new Specificity(0, 4, 0), 0],
+            [new Specificity(0, 6, 0), new Specificity(0, 5, 11), 1],
+            [new Specificity(0, 7, 0), new Specificity(0, 8, 0), -1],
+            [new Specificity(9, 0, 0), new Specificity(9, 0, 0), 0],
+            [new Specificity(11, 0, 0), new Specificity(10, 11, 0), 1],
+            [new Specificity(12, 11, 0), new Specificity(13, 0, 0), -1],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/AbstractHandlerTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/AbstractHandlerTest.php
index f5c9dc8bfecb..aaed55c205a9 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/AbstractHandlerTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/AbstractHandlerTest.php
@@ -54,7 +54,7 @@ protected function assertStreamEmpty(TokenStream $stream)
         $property = new \ReflectionProperty($stream, 'tokens');
         $property->setAccessible(true);
 
-        $this->assertEquals(array(), $property->getValue($stream));
+        $this->assertEquals([], $property->getValue($stream));
     }
 
     protected function assertRemainingContent(Reader $reader, $remainingContent)
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/CommentHandlerTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/CommentHandlerTest.php
index 3961bf7d55ad..de400478d8a0 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/CommentHandlerTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/CommentHandlerTest.php
@@ -32,20 +32,20 @@ public function testHandleValue($value, Token $unusedArgument, $remainingContent
 
     public function getHandleValueTestData()
     {
-        return array(
+        return [
             // 2nd argument only exists for inherited method compatibility
-            array('/* comment */', new Token(null, null, null), ''),
-            array('/* comment */foo', new Token(null, null, null), 'foo'),
-        );
+            ['/* comment */', new Token(null, null, null), ''],
+            ['/* comment */foo', new Token(null, null, null), 'foo'],
+        ];
     }
 
     public function getDontHandleValueTestData()
     {
-        return array(
-            array('>'),
-            array('+'),
-            array(' '),
-        );
+        return [
+            ['>'],
+            ['+'],
+            [' '],
+        ];
     }
 
     protected function generateHandler()
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/HashHandlerTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/HashHandlerTest.php
index 5730120bf74d..9444f5106f33 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/HashHandlerTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/HashHandlerTest.php
@@ -20,24 +20,24 @@ class HashHandlerTest extends AbstractHandlerTest
 {
     public function getHandleValueTestData()
     {
-        return array(
-            array('#id', new Token(Token::TYPE_HASH, 'id', 0), ''),
-            array('#123', new Token(Token::TYPE_HASH, '123', 0), ''),
+        return [
+            ['#id', new Token(Token::TYPE_HASH, 'id', 0), ''],
+            ['#123', new Token(Token::TYPE_HASH, '123', 0), ''],
 
-            array('#id.class', new Token(Token::TYPE_HASH, 'id', 0), '.class'),
-            array('#id element', new Token(Token::TYPE_HASH, 'id', 0), ' element'),
-        );
+            ['#id.class', new Token(Token::TYPE_HASH, 'id', 0), '.class'],
+            ['#id element', new Token(Token::TYPE_HASH, 'id', 0), ' element'],
+        ];
     }
 
     public function getDontHandleValueTestData()
     {
-        return array(
-            array('id'),
-            array('123'),
-            array('<'),
-            array('<'),
-            array('#'),
-        );
+        return [
+            ['id'],
+            ['123'],
+            ['<'],
+            ['<'],
+            ['#'],
+        ];
     }
 
     protected function generateHandler()
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/IdentifierHandlerTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/IdentifierHandlerTest.php
index f56430c7e83a..c54ba537b8a2 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/IdentifierHandlerTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/IdentifierHandlerTest.php
@@ -20,24 +20,24 @@ class IdentifierHandlerTest extends AbstractHandlerTest
 {
     public function getHandleValueTestData()
     {
-        return array(
-            array('foo', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), ''),
-            array('foo|bar', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), '|bar'),
-            array('foo.class', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), '.class'),
-            array('foo[attr]', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), '[attr]'),
-            array('foo bar', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), ' bar'),
-        );
+        return [
+            ['foo', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), ''],
+            ['foo|bar', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), '|bar'],
+            ['foo.class', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), '.class'],
+            ['foo[attr]', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), '[attr]'],
+            ['foo bar', new Token(Token::TYPE_IDENTIFIER, 'foo', 0), ' bar'],
+        ];
     }
 
     public function getDontHandleValueTestData()
     {
-        return array(
-            array('>'),
-            array('+'),
-            array(' '),
-            array('*|foo'),
-            array('/* comment */'),
-        );
+        return [
+            ['>'],
+            ['+'],
+            [' '],
+            ['*|foo'],
+            ['/* comment */'],
+        ];
     }
 
     protected function generateHandler()
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/NumberHandlerTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/NumberHandlerTest.php
index 675fd05b43ef..b43d36942184 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/NumberHandlerTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/NumberHandlerTest.php
@@ -19,26 +19,26 @@ class NumberHandlerTest extends AbstractHandlerTest
 {
     public function getHandleValueTestData()
     {
-        return array(
-            array('12', new Token(Token::TYPE_NUMBER, '12', 0), ''),
-            array('12.34', new Token(Token::TYPE_NUMBER, '12.34', 0), ''),
-            array('+12.34', new Token(Token::TYPE_NUMBER, '+12.34', 0), ''),
-            array('-12.34', new Token(Token::TYPE_NUMBER, '-12.34', 0), ''),
-
-            array('12 arg', new Token(Token::TYPE_NUMBER, '12', 0), ' arg'),
-            array('12]', new Token(Token::TYPE_NUMBER, '12', 0), ']'),
-        );
+        return [
+            ['12', new Token(Token::TYPE_NUMBER, '12', 0), ''],
+            ['12.34', new Token(Token::TYPE_NUMBER, '12.34', 0), ''],
+            ['+12.34', new Token(Token::TYPE_NUMBER, '+12.34', 0), ''],
+            ['-12.34', new Token(Token::TYPE_NUMBER, '-12.34', 0), ''],
+
+            ['12 arg', new Token(Token::TYPE_NUMBER, '12', 0), ' arg'],
+            ['12]', new Token(Token::TYPE_NUMBER, '12', 0), ']'],
+        ];
     }
 
     public function getDontHandleValueTestData()
     {
-        return array(
-            array('hello'),
-            array('>'),
-            array('+'),
-            array(' '),
-            array('/* comment */'),
-        );
+        return [
+            ['hello'],
+            ['>'],
+            ['+'],
+            [' '],
+            ['/* comment */'],
+        ];
     }
 
     protected function generateHandler()
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/StringHandlerTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/StringHandlerTest.php
index 8ea5d4d58776..baa72735ff16 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/StringHandlerTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/StringHandlerTest.php
@@ -20,25 +20,25 @@ class StringHandlerTest extends AbstractHandlerTest
 {
     public function getHandleValueTestData()
     {
-        return array(
-            array('"hello"', new Token(Token::TYPE_STRING, 'hello', 1), ''),
-            array('"1"', new Token(Token::TYPE_STRING, '1', 1), ''),
-            array('" "', new Token(Token::TYPE_STRING, ' ', 1), ''),
-            array('""', new Token(Token::TYPE_STRING, '', 1), ''),
-            array("'hello'", new Token(Token::TYPE_STRING, 'hello', 1), ''),
-
-            array("'foo'bar", new Token(Token::TYPE_STRING, 'foo', 1), 'bar'),
-        );
+        return [
+            ['"hello"', new Token(Token::TYPE_STRING, 'hello', 1), ''],
+            ['"1"', new Token(Token::TYPE_STRING, '1', 1), ''],
+            ['" "', new Token(Token::TYPE_STRING, ' ', 1), ''],
+            ['""', new Token(Token::TYPE_STRING, '', 1), ''],
+            ["'hello'", new Token(Token::TYPE_STRING, 'hello', 1), ''],
+
+            ["'foo'bar", new Token(Token::TYPE_STRING, 'foo', 1), 'bar'],
+        ];
     }
 
     public function getDontHandleValueTestData()
     {
-        return array(
-            array('hello'),
-            array('>'),
-            array('1'),
-            array(' '),
-        );
+        return [
+            ['hello'],
+            ['>'],
+            ['1'],
+            [' '],
+        ];
     }
 
     protected function generateHandler()
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/WhitespaceHandlerTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/WhitespaceHandlerTest.php
index f5f9e71dc228..67509ef13547 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Handler/WhitespaceHandlerTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Handler/WhitespaceHandlerTest.php
@@ -18,23 +18,23 @@ class WhitespaceHandlerTest extends AbstractHandlerTest
 {
     public function getHandleValueTestData()
     {
-        return array(
-            array(' ', new Token(Token::TYPE_WHITESPACE, ' ', 0), ''),
-            array("\n", new Token(Token::TYPE_WHITESPACE, "\n", 0), ''),
-            array("\t", new Token(Token::TYPE_WHITESPACE, "\t", 0), ''),
+        return [
+            [' ', new Token(Token::TYPE_WHITESPACE, ' ', 0), ''],
+            ["\n", new Token(Token::TYPE_WHITESPACE, "\n", 0), ''],
+            ["\t", new Token(Token::TYPE_WHITESPACE, "\t", 0), ''],
 
-            array(' foo', new Token(Token::TYPE_WHITESPACE, ' ', 0), 'foo'),
-            array(' .foo', new Token(Token::TYPE_WHITESPACE, ' ', 0), '.foo'),
-        );
+            [' foo', new Token(Token::TYPE_WHITESPACE, ' ', 0), 'foo'],
+            [' .foo', new Token(Token::TYPE_WHITESPACE, ' ', 0), '.foo'],
+        ];
     }
 
     public function getDontHandleValueTestData()
     {
-        return array(
-            array('>'),
-            array('1'),
-            array('a'),
-        );
+        return [
+            ['>'],
+            ['1'],
+            ['a'],
+        ];
     }
 
     protected function generateHandler()
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/ParserTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/ParserTest.php
index 024be8101eab..de3509348c05 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/ParserTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/ParserTest.php
@@ -77,7 +77,7 @@ public function testParseSeries($series, $a, $b)
 
         /** @var FunctionNode $function */
         $function = $selectors[0]->getTree();
-        $this->assertEquals(array($a, $b), Parser::parseSeries($function->getArguments()));
+        $this->assertEquals([$a, $b], Parser::parseSeries($function->getArguments()));
     }
 
     /** @dataProvider getParseSeriesExceptionTestData */
@@ -95,159 +95,159 @@ public function testParseSeriesException($series)
 
     public function getParserTestData()
     {
-        return array(
-            array('*', array('Element[*]')),
-            array('*|*', array('Element[*]')),
-            array('*|foo', array('Element[foo]')),
-            array('foo|*', array('Element[foo|*]')),
-            array('foo|bar', array('Element[foo|bar]')),
-            array('#foo#bar', array('Hash[Hash[Element[*]#foo]#bar]')),
-            array('div>.foo', array('CombinedSelector[Element[div] > Class[Element[*].foo]]')),
-            array('div> .foo', array('CombinedSelector[Element[div] > Class[Element[*].foo]]')),
-            array('div >.foo', array('CombinedSelector[Element[div] > Class[Element[*].foo]]')),
-            array('div > .foo', array('CombinedSelector[Element[div] > Class[Element[*].foo]]')),
-            array("div \n>  \t \t .foo", array('CombinedSelector[Element[div] > Class[Element[*].foo]]')),
-            array('td.foo,.bar', array('Class[Element[td].foo]', 'Class[Element[*].bar]')),
-            array('td.foo, .bar', array('Class[Element[td].foo]', 'Class[Element[*].bar]')),
-            array("td.foo\t\r\n\f ,\t\r\n\f .bar", array('Class[Element[td].foo]', 'Class[Element[*].bar]')),
-            array('td.foo,.bar', array('Class[Element[td].foo]', 'Class[Element[*].bar]')),
-            array('td.foo, .bar', array('Class[Element[td].foo]', 'Class[Element[*].bar]')),
-            array("td.foo\t\r\n\f ,\t\r\n\f .bar", array('Class[Element[td].foo]', 'Class[Element[*].bar]')),
-            array('div, td.foo, div.bar span', array('Element[div]', 'Class[Element[td].foo]', 'CombinedSelector[Class[Element[div].bar] <followed> Element[span]]')),
-            array('div > p', array('CombinedSelector[Element[div] > Element[p]]')),
-            array('td:first', array('Pseudo[Element[td]:first]')),
-            array('td :first', array('CombinedSelector[Element[td] <followed> Pseudo[Element[*]:first]]')),
-            array('a[name]', array('Attribute[Element[a][name]]')),
-            array("a[ name\t]", array('Attribute[Element[a][name]]')),
-            array('a [name]', array('CombinedSelector[Element[a] <followed> Attribute[Element[*][name]]]')),
-            array('[name="foo"]', array("Attribute[Element[*][name = 'foo']]")),
-            array("[name='foo[1]']", array("Attribute[Element[*][name = 'foo[1]']]")),
-            array("[name='foo[0][bar]']", array("Attribute[Element[*][name = 'foo[0][bar]']]")),
-            array('a[rel="include"]', array("Attribute[Element[a][rel = 'include']]")),
-            array('a[rel = include]', array("Attribute[Element[a][rel = 'include']]")),
-            array("a[hreflang |= 'en']", array("Attribute[Element[a][hreflang |= 'en']]")),
-            array('a[hreflang|=en]', array("Attribute[Element[a][hreflang |= 'en']]")),
-            array('div:nth-child(10)', array("Function[Element[div]:nth-child(['10'])]")),
-            array(':nth-child(2n+2)', array("Function[Element[*]:nth-child(['2', 'n', '+2'])]")),
-            array('div:nth-of-type(10)', array("Function[Element[div]:nth-of-type(['10'])]")),
-            array('div div:nth-of-type(10) .aclass', array("CombinedSelector[CombinedSelector[Element[div] <followed> Function[Element[div]:nth-of-type(['10'])]] <followed> Class[Element[*].aclass]]")),
-            array('label:only', array('Pseudo[Element[label]:only]')),
-            array('a:lang(fr)', array("Function[Element[a]:lang(['fr'])]")),
-            array('div:contains("foo")', array("Function[Element[div]:contains(['foo'])]")),
-            array('div#foobar', array('Hash[Element[div]#foobar]')),
-            array('div:not(div.foo)', array('Negation[Element[div]:not(Class[Element[div].foo])]')),
-            array('td ~ th', array('CombinedSelector[Element[td] ~ Element[th]]')),
-            array('.foo[data-bar][data-baz=0]', array("Attribute[Attribute[Class[Element[*].foo][data-bar]][data-baz = '0']]")),
-        );
+        return [
+            ['*', ['Element[*]']],
+            ['*|*', ['Element[*]']],
+            ['*|foo', ['Element[foo]']],
+            ['foo|*', ['Element[foo|*]']],
+            ['foo|bar', ['Element[foo|bar]']],
+            ['#foo#bar', ['Hash[Hash[Element[*]#foo]#bar]']],
+            ['div>.foo', ['CombinedSelector[Element[div] > Class[Element[*].foo]]']],
+            ['div> .foo', ['CombinedSelector[Element[div] > Class[Element[*].foo]]']],
+            ['div >.foo', ['CombinedSelector[Element[div] > Class[Element[*].foo]]']],
+            ['div > .foo', ['CombinedSelector[Element[div] > Class[Element[*].foo]]']],
+            ["div \n>  \t \t .foo", ['CombinedSelector[Element[div] > Class[Element[*].foo]]']],
+            ['td.foo,.bar', ['Class[Element[td].foo]', 'Class[Element[*].bar]']],
+            ['td.foo, .bar', ['Class[Element[td].foo]', 'Class[Element[*].bar]']],
+            ["td.foo\t\r\n\f ,\t\r\n\f .bar", ['Class[Element[td].foo]', 'Class[Element[*].bar]']],
+            ['td.foo,.bar', ['Class[Element[td].foo]', 'Class[Element[*].bar]']],
+            ['td.foo, .bar', ['Class[Element[td].foo]', 'Class[Element[*].bar]']],
+            ["td.foo\t\r\n\f ,\t\r\n\f .bar", ['Class[Element[td].foo]', 'Class[Element[*].bar]']],
+            ['div, td.foo, div.bar span', ['Element[div]', 'Class[Element[td].foo]', 'CombinedSelector[Class[Element[div].bar] <followed> Element[span]]']],
+            ['div > p', ['CombinedSelector[Element[div] > Element[p]]']],
+            ['td:first', ['Pseudo[Element[td]:first]']],
+            ['td :first', ['CombinedSelector[Element[td] <followed> Pseudo[Element[*]:first]]']],
+            ['a[name]', ['Attribute[Element[a][name]]']],
+            ["a[ name\t]", ['Attribute[Element[a][name]]']],
+            ['a [name]', ['CombinedSelector[Element[a] <followed> Attribute[Element[*][name]]]']],
+            ['[name="foo"]', ["Attribute[Element[*][name = 'foo']]"]],
+            ["[name='foo[1]']", ["Attribute[Element[*][name = 'foo[1]']]"]],
+            ["[name='foo[0][bar]']", ["Attribute[Element[*][name = 'foo[0][bar]']]"]],
+            ['a[rel="include"]', ["Attribute[Element[a][rel = 'include']]"]],
+            ['a[rel = include]', ["Attribute[Element[a][rel = 'include']]"]],
+            ["a[hreflang |= 'en']", ["Attribute[Element[a][hreflang |= 'en']]"]],
+            ['a[hreflang|=en]', ["Attribute[Element[a][hreflang |= 'en']]"]],
+            ['div:nth-child(10)', ["Function[Element[div]:nth-child(['10'])]"]],
+            [':nth-child(2n+2)', ["Function[Element[*]:nth-child(['2', 'n', '+2'])]"]],
+            ['div:nth-of-type(10)', ["Function[Element[div]:nth-of-type(['10'])]"]],
+            ['div div:nth-of-type(10) .aclass', ["CombinedSelector[CombinedSelector[Element[div] <followed> Function[Element[div]:nth-of-type(['10'])]] <followed> Class[Element[*].aclass]]"]],
+            ['label:only', ['Pseudo[Element[label]:only]']],
+            ['a:lang(fr)', ["Function[Element[a]:lang(['fr'])]"]],
+            ['div:contains("foo")', ["Function[Element[div]:contains(['foo'])]"]],
+            ['div#foobar', ['Hash[Element[div]#foobar]']],
+            ['div:not(div.foo)', ['Negation[Element[div]:not(Class[Element[div].foo])]']],
+            ['td ~ th', ['CombinedSelector[Element[td] ~ Element[th]]']],
+            ['.foo[data-bar][data-baz=0]', ["Attribute[Attribute[Class[Element[*].foo][data-bar]][data-baz = '0']]"]],
+        ];
     }
 
     public function getParserExceptionTestData()
     {
-        return array(
-            array('attributes(href)/html/body/a', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '(', 10))->getMessage()),
-            array('attributes(href)', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '(', 10))->getMessage()),
-            array('html/body/a', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '/', 4))->getMessage()),
-            array(' ', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_FILE_END, '', 1))->getMessage()),
-            array('div, ', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_FILE_END, '', 5))->getMessage()),
-            array(' , div', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, ',', 1))->getMessage()),
-            array('p, , div', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, ',', 3))->getMessage()),
-            array('div > ', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_FILE_END, '', 6))->getMessage()),
-            array('  > div', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '>', 2))->getMessage()),
-            array('foo|#bar', SyntaxErrorException::unexpectedToken('identifier or "*"', new Token(Token::TYPE_HASH, 'bar', 4))->getMessage()),
-            array('#.foo', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '#', 0))->getMessage()),
-            array('.#foo', SyntaxErrorException::unexpectedToken('identifier', new Token(Token::TYPE_HASH, 'foo', 1))->getMessage()),
-            array(':#foo', SyntaxErrorException::unexpectedToken('identifier', new Token(Token::TYPE_HASH, 'foo', 1))->getMessage()),
-            array('[*]', SyntaxErrorException::unexpectedToken('"|"', new Token(Token::TYPE_DELIMITER, ']', 2))->getMessage()),
-            array('[foo|]', SyntaxErrorException::unexpectedToken('identifier', new Token(Token::TYPE_DELIMITER, ']', 5))->getMessage()),
-            array('[#]', SyntaxErrorException::unexpectedToken('identifier or "*"', new Token(Token::TYPE_DELIMITER, '#', 1))->getMessage()),
-            array('[foo=#]', SyntaxErrorException::unexpectedToken('string or identifier', new Token(Token::TYPE_DELIMITER, '#', 5))->getMessage()),
-            array(':nth-child()', SyntaxErrorException::unexpectedToken('at least one argument', new Token(Token::TYPE_DELIMITER, ')', 11))->getMessage()),
-            array('[href]a', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_IDENTIFIER, 'a', 6))->getMessage()),
-            array('[rel:stylesheet]', SyntaxErrorException::unexpectedToken('operator', new Token(Token::TYPE_DELIMITER, ':', 4))->getMessage()),
-            array('[rel=stylesheet', SyntaxErrorException::unexpectedToken('"]"', new Token(Token::TYPE_FILE_END, '', 15))->getMessage()),
-            array(':lang(fr', SyntaxErrorException::unexpectedToken('an argument', new Token(Token::TYPE_FILE_END, '', 8))->getMessage()),
-            array(':contains("foo', SyntaxErrorException::unclosedString(10)->getMessage()),
-            array('foo!', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '!', 3))->getMessage()),
-        );
+        return [
+            ['attributes(href)/html/body/a', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '(', 10))->getMessage()],
+            ['attributes(href)', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '(', 10))->getMessage()],
+            ['html/body/a', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '/', 4))->getMessage()],
+            [' ', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_FILE_END, '', 1))->getMessage()],
+            ['div, ', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_FILE_END, '', 5))->getMessage()],
+            [' , div', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, ',', 1))->getMessage()],
+            ['p, , div', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, ',', 3))->getMessage()],
+            ['div > ', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_FILE_END, '', 6))->getMessage()],
+            ['  > div', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '>', 2))->getMessage()],
+            ['foo|#bar', SyntaxErrorException::unexpectedToken('identifier or "*"', new Token(Token::TYPE_HASH, 'bar', 4))->getMessage()],
+            ['#.foo', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '#', 0))->getMessage()],
+            ['.#foo', SyntaxErrorException::unexpectedToken('identifier', new Token(Token::TYPE_HASH, 'foo', 1))->getMessage()],
+            [':#foo', SyntaxErrorException::unexpectedToken('identifier', new Token(Token::TYPE_HASH, 'foo', 1))->getMessage()],
+            ['[*]', SyntaxErrorException::unexpectedToken('"|"', new Token(Token::TYPE_DELIMITER, ']', 2))->getMessage()],
+            ['[foo|]', SyntaxErrorException::unexpectedToken('identifier', new Token(Token::TYPE_DELIMITER, ']', 5))->getMessage()],
+            ['[#]', SyntaxErrorException::unexpectedToken('identifier or "*"', new Token(Token::TYPE_DELIMITER, '#', 1))->getMessage()],
+            ['[foo=#]', SyntaxErrorException::unexpectedToken('string or identifier', new Token(Token::TYPE_DELIMITER, '#', 5))->getMessage()],
+            [':nth-child()', SyntaxErrorException::unexpectedToken('at least one argument', new Token(Token::TYPE_DELIMITER, ')', 11))->getMessage()],
+            ['[href]a', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_IDENTIFIER, 'a', 6))->getMessage()],
+            ['[rel:stylesheet]', SyntaxErrorException::unexpectedToken('operator', new Token(Token::TYPE_DELIMITER, ':', 4))->getMessage()],
+            ['[rel=stylesheet', SyntaxErrorException::unexpectedToken('"]"', new Token(Token::TYPE_FILE_END, '', 15))->getMessage()],
+            [':lang(fr', SyntaxErrorException::unexpectedToken('an argument', new Token(Token::TYPE_FILE_END, '', 8))->getMessage()],
+            [':contains("foo', SyntaxErrorException::unclosedString(10)->getMessage()],
+            ['foo!', SyntaxErrorException::unexpectedToken('selector', new Token(Token::TYPE_DELIMITER, '!', 3))->getMessage()],
+        ];
     }
 
     public function getPseudoElementsTestData()
     {
-        return array(
-            array('foo', 'Element[foo]', ''),
-            array('*', 'Element[*]', ''),
-            array(':empty', 'Pseudo[Element[*]:empty]', ''),
-            array(':BEfore', 'Element[*]', 'before'),
-            array(':aftER', 'Element[*]', 'after'),
-            array(':First-Line', 'Element[*]', 'first-line'),
-            array(':First-Letter', 'Element[*]', 'first-letter'),
-            array('::befoRE', 'Element[*]', 'before'),
-            array('::AFter', 'Element[*]', 'after'),
-            array('::firsT-linE', 'Element[*]', 'first-line'),
-            array('::firsT-letteR', 'Element[*]', 'first-letter'),
-            array('::Selection', 'Element[*]', 'selection'),
-            array('foo:after', 'Element[foo]', 'after'),
-            array('foo::selection', 'Element[foo]', 'selection'),
-            array('lorem#ipsum ~ a#b.c[href]:empty::selection', 'CombinedSelector[Hash[Element[lorem]#ipsum] ~ Pseudo[Attribute[Class[Hash[Element[a]#b].c][href]]:empty]]', 'selection'),
-            array('video::-webkit-media-controls', 'Element[video]', '-webkit-media-controls'),
-        );
+        return [
+            ['foo', 'Element[foo]', ''],
+            ['*', 'Element[*]', ''],
+            [':empty', 'Pseudo[Element[*]:empty]', ''],
+            [':BEfore', 'Element[*]', 'before'],
+            [':aftER', 'Element[*]', 'after'],
+            [':First-Line', 'Element[*]', 'first-line'],
+            [':First-Letter', 'Element[*]', 'first-letter'],
+            ['::befoRE', 'Element[*]', 'before'],
+            ['::AFter', 'Element[*]', 'after'],
+            ['::firsT-linE', 'Element[*]', 'first-line'],
+            ['::firsT-letteR', 'Element[*]', 'first-letter'],
+            ['::Selection', 'Element[*]', 'selection'],
+            ['foo:after', 'Element[foo]', 'after'],
+            ['foo::selection', 'Element[foo]', 'selection'],
+            ['lorem#ipsum ~ a#b.c[href]:empty::selection', 'CombinedSelector[Hash[Element[lorem]#ipsum] ~ Pseudo[Attribute[Class[Hash[Element[a]#b].c][href]]:empty]]', 'selection'],
+            ['video::-webkit-media-controls', 'Element[video]', '-webkit-media-controls'],
+        ];
     }
 
     public function getSpecificityTestData()
     {
-        return array(
-            array('*', 0),
-            array(' foo', 1),
-            array(':empty ', 10),
-            array(':before', 1),
-            array('*:before', 1),
-            array(':nth-child(2)', 10),
-            array('.bar', 10),
-            array('[baz]', 10),
-            array('[baz="4"]', 10),
-            array('[baz^="4"]', 10),
-            array('#lipsum', 100),
-            array(':not(*)', 0),
-            array(':not(foo)', 1),
-            array(':not(.foo)', 10),
-            array(':not([foo])', 10),
-            array(':not(:empty)', 10),
-            array(':not(#foo)', 100),
-            array('foo:empty', 11),
-            array('foo:before', 2),
-            array('foo::before', 2),
-            array('foo:empty::before', 12),
-            array('#lorem + foo#ipsum:first-child > bar:first-line', 213),
-        );
+        return [
+            ['*', 0],
+            [' foo', 1],
+            [':empty ', 10],
+            [':before', 1],
+            ['*:before', 1],
+            [':nth-child(2)', 10],
+            ['.bar', 10],
+            ['[baz]', 10],
+            ['[baz="4"]', 10],
+            ['[baz^="4"]', 10],
+            ['#lipsum', 100],
+            [':not(*)', 0],
+            [':not(foo)', 1],
+            [':not(.foo)', 10],
+            [':not([foo])', 10],
+            [':not(:empty)', 10],
+            [':not(#foo)', 100],
+            ['foo:empty', 11],
+            ['foo:before', 2],
+            ['foo::before', 2],
+            ['foo:empty::before', 12],
+            ['#lorem + foo#ipsum:first-child > bar:first-line', 213],
+        ];
     }
 
     public function getParseSeriesTestData()
     {
-        return array(
-            array('1n+3', 1, 3),
-            array('1n +3', 1, 3),
-            array('1n + 3', 1, 3),
-            array('1n+ 3', 1, 3),
-            array('1n-3', 1, -3),
-            array('1n -3', 1, -3),
-            array('1n - 3', 1, -3),
-            array('1n- 3', 1, -3),
-            array('n-5', 1, -5),
-            array('odd', 2, 1),
-            array('even', 2, 0),
-            array('3n', 3, 0),
-            array('n', 1, 0),
-            array('+n', 1, 0),
-            array('-n', -1, 0),
-            array('5', 0, 5),
-        );
+        return [
+            ['1n+3', 1, 3],
+            ['1n +3', 1, 3],
+            ['1n + 3', 1, 3],
+            ['1n+ 3', 1, 3],
+            ['1n-3', 1, -3],
+            ['1n -3', 1, -3],
+            ['1n - 3', 1, -3],
+            ['1n- 3', 1, -3],
+            ['n-5', 1, -5],
+            ['odd', 2, 1],
+            ['even', 2, 0],
+            ['3n', 3, 0],
+            ['n', 1, 0],
+            ['+n', 1, 0],
+            ['-n', -1, 0],
+            ['5', 0, 5],
+        ];
     }
 
     public function getParseSeriesExceptionTestData()
     {
-        return array(
-            array('foo'),
-            array('n+'),
-        );
+        return [
+            ['foo'],
+            ['n+'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/ReaderTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/ReaderTest.php
index 21eb60846240..ff9ea909753c 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/ReaderTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/ReaderTest.php
@@ -70,11 +70,11 @@ public function testFindPattern()
         $reader = new Reader('hello');
 
         $this->assertFalse($reader->findPattern('/world/'));
-        $this->assertEquals(array('hello', 'h'), $reader->findPattern('/^([a-z]).*/'));
+        $this->assertEquals(['hello', 'h'], $reader->findPattern('/^([a-z]).*/'));
 
         $this->assignPosition($reader, 2);
         $this->assertFalse($reader->findPattern('/^h.*/'));
-        $this->assertEquals(array('llo'), $reader->findPattern('/^llo$/'));
+        $this->assertEquals(['llo'], $reader->findPattern('/^llo$/'));
     }
 
     public function testMoveForward()
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/ClassParserTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/ClassParserTest.php
index 7e92f5baeed1..29d9d5f16b24 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/ClassParserTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/ClassParserTest.php
@@ -34,12 +34,12 @@ public function testParse($source, $representation)
 
     public function getParseTestData()
     {
-        return array(
-            array('.testclass', 'Class[Element[*].testclass]'),
-            array('testel.testclass', 'Class[Element[testel].testclass]'),
-            array('testns|.testclass', 'Class[Element[testns|*].testclass]'),
-            array('testns|*.testclass', 'Class[Element[testns|*].testclass]'),
-            array('testns|testel.testclass', 'Class[Element[testns|testel].testclass]'),
-        );
+        return [
+            ['.testclass', 'Class[Element[*].testclass]'],
+            ['testel.testclass', 'Class[Element[testel].testclass]'],
+            ['testns|.testclass', 'Class[Element[testns|*].testclass]'],
+            ['testns|*.testclass', 'Class[Element[testns|*].testclass]'],
+            ['testns|testel.testclass', 'Class[Element[testns|testel].testclass]'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/ElementParserTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/ElementParserTest.php
index 05a730fde15a..79cc2270324f 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/ElementParserTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/ElementParserTest.php
@@ -34,11 +34,11 @@ public function testParse($source, $representation)
 
     public function getParseTestData()
     {
-        return array(
-            array('*', 'Element[*]'),
-            array('testel', 'Element[testel]'),
-            array('testns|*', 'Element[testns|*]'),
-            array('testns|testel', 'Element[testns|testel]'),
-        );
+        return [
+            ['*', 'Element[*]'],
+            ['testel', 'Element[testel]'],
+            ['testns|*', 'Element[testns|*]'],
+            ['testns|testel', 'Element[testns|testel]'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/HashParserTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/HashParserTest.php
index 82f555d9abf1..a7c79d69a547 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/HashParserTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/Shortcut/HashParserTest.php
@@ -34,12 +34,12 @@ public function testParse($source, $representation)
 
     public function getParseTestData()
     {
-        return array(
-            array('#testid', 'Hash[Element[*]#testid]'),
-            array('testel#testid', 'Hash[Element[testel]#testid]'),
-            array('testns|#testid', 'Hash[Element[testns|*]#testid]'),
-            array('testns|*#testid', 'Hash[Element[testns|*]#testid]'),
-            array('testns|testel#testid', 'Hash[Element[testns|testel]#testid]'),
-        );
+        return [
+            ['#testid', 'Hash[Element[*]#testid]'],
+            ['testel#testid', 'Hash[Element[testel]#testid]'],
+            ['testns|#testid', 'Hash[Element[testns|*]#testid]'],
+            ['testns|*#testid', 'Hash[Element[testns|*]#testid]'],
+            ['testns|testel#testid', 'Hash[Element[testns|testel]#testid]'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php b/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
index 92957df5f12e..a9ab29e2ad62 100644
--- a/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/XPath/TranslatorTest.php
@@ -151,248 +151,248 @@ public function testHtmlShakespear($css, $count)
 
     public function getXpathLiteralTestData()
     {
-        return array(
-            array('foo', "'foo'"),
-            array("foo's bar", '"foo\'s bar"'),
-            array("foo's \"middle\" bar", 'concat(\'foo\', "\'", \'s "middle" bar\')'),
-            array("foo's 'middle' \"bar\"", 'concat(\'foo\', "\'", \'s \', "\'", \'middle\', "\'", \' "bar"\')'),
-        );
+        return [
+            ['foo', "'foo'"],
+            ["foo's bar", '"foo\'s bar"'],
+            ["foo's \"middle\" bar", 'concat(\'foo\', "\'", \'s "middle" bar\')'],
+            ["foo's 'middle' \"bar\"", 'concat(\'foo\', "\'", \'s \', "\'", \'middle\', "\'", \' "bar"\')'],
+        ];
     }
 
     public function getCssToXPathTestData()
     {
-        return array(
-            array('*', '*'),
-            array('e', 'e'),
-            array('*|e', 'e'),
-            array('e|f', 'e:f'),
-            array('e[foo]', 'e[@foo]'),
-            array('e[foo|bar]', 'e[@foo:bar]'),
-            array('e[foo="bar"]', "e[@foo = 'bar']"),
-            array('e[foo~="bar"]', "e[@foo and contains(concat(' ', normalize-space(@foo), ' '), ' bar ')]"),
-            array('e[foo^="bar"]', "e[@foo and starts-with(@foo, 'bar')]"),
-            array('e[foo$="bar"]', "e[@foo and substring(@foo, string-length(@foo)-2) = 'bar']"),
-            array('e[foo*="bar"]', "e[@foo and contains(@foo, 'bar')]"),
-            array('e[foo!="bar"]', "e[not(@foo) or @foo != 'bar']"),
-            array('e[foo!="bar"][foo!="baz"]', "e[(not(@foo) or @foo != 'bar') and (not(@foo) or @foo != 'baz')]"),
-            array('e[hreflang|="en"]', "e[@hreflang and (@hreflang = 'en' or starts-with(@hreflang, 'en-'))]"),
-            array('e:nth-child(1)', "*/*[(name() = 'e') and (position() = 1)]"),
-            array('e:nth-last-child(1)', "*/*[(name() = 'e') and (position() = last() - 0)]"),
-            array('e:nth-last-child(2n+2)', "*/*[(name() = 'e') and (last() - position() - 1 >= 0 and (last() - position() - 1) mod 2 = 0)]"),
-            array('e:nth-of-type(1)', '*/e[position() = 1]'),
-            array('e:nth-last-of-type(1)', '*/e[position() = last() - 0]'),
-            array('div e:nth-last-of-type(1) .aclass', "div/descendant-or-self::*/e[position() = last() - 0]/descendant-or-self::*/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' aclass ')]"),
-            array('e:first-child', "*/*[(name() = 'e') and (position() = 1)]"),
-            array('e:last-child', "*/*[(name() = 'e') and (position() = last())]"),
-            array('e:first-of-type', '*/e[position() = 1]'),
-            array('e:last-of-type', '*/e[position() = last()]'),
-            array('e:only-child', "*/*[(name() = 'e') and (last() = 1)]"),
-            array('e:only-of-type', 'e[last() = 1]'),
-            array('e:empty', 'e[not(*) and not(string-length())]'),
-            array('e:EmPTY', 'e[not(*) and not(string-length())]'),
-            array('e:root', 'e[not(parent::*)]'),
-            array('e:hover', 'e[0]'),
-            array('e:contains("foo")', "e[contains(string(.), 'foo')]"),
-            array('e:ConTains(foo)', "e[contains(string(.), 'foo')]"),
-            array('e.warning', "e[@class and contains(concat(' ', normalize-space(@class), ' '), ' warning ')]"),
-            array('e#myid', "e[@id = 'myid']"),
-            array('e:not(:nth-child(odd))', 'e[not(position() - 1 >= 0 and (position() - 1) mod 2 = 0)]'),
-            array('e:nOT(*)', 'e[0]'),
-            array('e f', 'e/descendant-or-self::*/f'),
-            array('e > f', 'e/f'),
-            array('e + f', "e/following-sibling::*[(name() = 'f') and (position() = 1)]"),
-            array('e ~ f', 'e/following-sibling::f'),
-            array('div#container p', "div[@id = 'container']/descendant-or-self::*/p"),
-        );
+        return [
+            ['*', '*'],
+            ['e', 'e'],
+            ['*|e', 'e'],
+            ['e|f', 'e:f'],
+            ['e[foo]', 'e[@foo]'],
+            ['e[foo|bar]', 'e[@foo:bar]'],
+            ['e[foo="bar"]', "e[@foo = 'bar']"],
+            ['e[foo~="bar"]', "e[@foo and contains(concat(' ', normalize-space(@foo), ' '), ' bar ')]"],
+            ['e[foo^="bar"]', "e[@foo and starts-with(@foo, 'bar')]"],
+            ['e[foo$="bar"]', "e[@foo and substring(@foo, string-length(@foo)-2) = 'bar']"],
+            ['e[foo*="bar"]', "e[@foo and contains(@foo, 'bar')]"],
+            ['e[foo!="bar"]', "e[not(@foo) or @foo != 'bar']"],
+            ['e[foo!="bar"][foo!="baz"]', "e[(not(@foo) or @foo != 'bar') and (not(@foo) or @foo != 'baz')]"],
+            ['e[hreflang|="en"]', "e[@hreflang and (@hreflang = 'en' or starts-with(@hreflang, 'en-'))]"],
+            ['e:nth-child(1)', "*/*[(name() = 'e') and (position() = 1)]"],
+            ['e:nth-last-child(1)', "*/*[(name() = 'e') and (position() = last() - 0)]"],
+            ['e:nth-last-child(2n+2)', "*/*[(name() = 'e') and (last() - position() - 1 >= 0 and (last() - position() - 1) mod 2 = 0)]"],
+            ['e:nth-of-type(1)', '*/e[position() = 1]'],
+            ['e:nth-last-of-type(1)', '*/e[position() = last() - 0]'],
+            ['div e:nth-last-of-type(1) .aclass', "div/descendant-or-self::*/e[position() = last() - 0]/descendant-or-self::*/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' aclass ')]"],
+            ['e:first-child', "*/*[(name() = 'e') and (position() = 1)]"],
+            ['e:last-child', "*/*[(name() = 'e') and (position() = last())]"],
+            ['e:first-of-type', '*/e[position() = 1]'],
+            ['e:last-of-type', '*/e[position() = last()]'],
+            ['e:only-child', "*/*[(name() = 'e') and (last() = 1)]"],
+            ['e:only-of-type', 'e[last() = 1]'],
+            ['e:empty', 'e[not(*) and not(string-length())]'],
+            ['e:EmPTY', 'e[not(*) and not(string-length())]'],
+            ['e:root', 'e[not(parent::*)]'],
+            ['e:hover', 'e[0]'],
+            ['e:contains("foo")', "e[contains(string(.), 'foo')]"],
+            ['e:ConTains(foo)', "e[contains(string(.), 'foo')]"],
+            ['e.warning', "e[@class and contains(concat(' ', normalize-space(@class), ' '), ' warning ')]"],
+            ['e#myid', "e[@id = 'myid']"],
+            ['e:not(:nth-child(odd))', 'e[not(position() - 1 >= 0 and (position() - 1) mod 2 = 0)]'],
+            ['e:nOT(*)', 'e[0]'],
+            ['e f', 'e/descendant-or-self::*/f'],
+            ['e > f', 'e/f'],
+            ['e + f', "e/following-sibling::*[(name() = 'f') and (position() = 1)]"],
+            ['e ~ f', 'e/following-sibling::f'],
+            ['div#container p', "div[@id = 'container']/descendant-or-self::*/p"],
+        ];
     }
 
     public function getXmlLangTestData()
     {
-        return array(
-            array(':lang("EN")', array('first', 'second', 'third', 'fourth')),
-            array(':lang("en-us")', array('second', 'fourth')),
-            array(':lang(en-nz)', array('third')),
-            array(':lang(fr)', array('fifth')),
-            array(':lang(ru)', array('sixth')),
-            array(":lang('ZH')", array('eighth')),
-            array(':lang(de) :lang(zh)', array('eighth')),
-            array(':lang(en), :lang(zh)', array('first', 'second', 'third', 'fourth', 'eighth')),
-            array(':lang(es)', array()),
-        );
+        return [
+            [':lang("EN")', ['first', 'second', 'third', 'fourth']],
+            [':lang("en-us")', ['second', 'fourth']],
+            [':lang(en-nz)', ['third']],
+            [':lang(fr)', ['fifth']],
+            [':lang(ru)', ['sixth']],
+            [":lang('ZH')", ['eighth']],
+            [':lang(de) :lang(zh)', ['eighth']],
+            [':lang(en), :lang(zh)', ['first', 'second', 'third', 'fourth', 'eighth']],
+            [':lang(es)', []],
+        ];
     }
 
     public function getHtmlIdsTestData()
     {
-        return array(
-            array('div', array('outer-div', 'li-div', 'foobar-div')),
-            array('DIV', array('outer-div', 'li-div', 'foobar-div')),  // case-insensitive in HTML
-            array('div div', array('li-div')),
-            array('div, div div', array('outer-div', 'li-div', 'foobar-div')),
-            array('a[name]', array('name-anchor')),
-            array('a[NAme]', array('name-anchor')), // case-insensitive in HTML:
-            array('a[rel]', array('tag-anchor', 'nofollow-anchor')),
-            array('a[rel="tag"]', array('tag-anchor')),
-            array('a[href*="localhost"]', array('tag-anchor')),
-            array('a[href*=""]', array()),
-            array('a[href^="http"]', array('tag-anchor', 'nofollow-anchor')),
-            array('a[href^="http:"]', array('tag-anchor')),
-            array('a[href^=""]', array()),
-            array('a[href$="org"]', array('nofollow-anchor')),
-            array('a[href$=""]', array()),
-            array('div[foobar~="bc"]', array('foobar-div')),
-            array('div[foobar~="cde"]', array('foobar-div')),
-            array('[foobar~="ab bc"]', array('foobar-div')),
-            array('[foobar~=""]', array()),
-            array('[foobar~=" \t"]', array()),
-            array('div[foobar~="cd"]', array()),
-            array('*[lang|="En"]', array('second-li')),
-            array('[lang|="En-us"]', array('second-li')),
+        return [
+            ['div', ['outer-div', 'li-div', 'foobar-div']],
+            ['DIV', ['outer-div', 'li-div', 'foobar-div']],  // case-insensitive in HTML
+            ['div div', ['li-div']],
+            ['div, div div', ['outer-div', 'li-div', 'foobar-div']],
+            ['a[name]', ['name-anchor']],
+            ['a[NAme]', ['name-anchor']], // case-insensitive in HTML:
+            ['a[rel]', ['tag-anchor', 'nofollow-anchor']],
+            ['a[rel="tag"]', ['tag-anchor']],
+            ['a[href*="localhost"]', ['tag-anchor']],
+            ['a[href*=""]', []],
+            ['a[href^="http"]', ['tag-anchor', 'nofollow-anchor']],
+            ['a[href^="http:"]', ['tag-anchor']],
+            ['a[href^=""]', []],
+            ['a[href$="org"]', ['nofollow-anchor']],
+            ['a[href$=""]', []],
+            ['div[foobar~="bc"]', ['foobar-div']],
+            ['div[foobar~="cde"]', ['foobar-div']],
+            ['[foobar~="ab bc"]', ['foobar-div']],
+            ['[foobar~=""]', []],
+            ['[foobar~=" \t"]', []],
+            ['div[foobar~="cd"]', []],
+            ['*[lang|="En"]', ['second-li']],
+            ['[lang|="En-us"]', ['second-li']],
             // Attribute values are case sensitive
-            array('*[lang|="en"]', array()),
-            array('[lang|="en-US"]', array()),
-            array('*[lang|="e"]', array()),
+            ['*[lang|="en"]', []],
+            ['[lang|="en-US"]', []],
+            ['*[lang|="e"]', []],
             // ... :lang() is not.
-            array(':lang("EN")', array('second-li', 'li-div')),
-            array('*:lang(en-US)', array('second-li', 'li-div')),
-            array(':lang("e")', array()),
-            array('li:nth-child(3)', array('third-li')),
-            array('li:nth-child(10)', array()),
-            array('li:nth-child(2n)', array('second-li', 'fourth-li', 'sixth-li')),
-            array('li:nth-child(even)', array('second-li', 'fourth-li', 'sixth-li')),
-            array('li:nth-child(2n+0)', array('second-li', 'fourth-li', 'sixth-li')),
-            array('li:nth-child(+2n+1)', array('first-li', 'third-li', 'fifth-li', 'seventh-li')),
-            array('li:nth-child(odd)', array('first-li', 'third-li', 'fifth-li', 'seventh-li')),
-            array('li:nth-child(2n+4)', array('fourth-li', 'sixth-li')),
-            array('li:nth-child(3n+1)', array('first-li', 'fourth-li', 'seventh-li')),
-            array('li:nth-child(n)', array('first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li')),
-            array('li:nth-child(n-1)', array('first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li')),
-            array('li:nth-child(n+1)', array('first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li')),
-            array('li:nth-child(n+3)', array('third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li')),
-            array('li:nth-child(-n)', array()),
-            array('li:nth-child(-n-1)', array()),
-            array('li:nth-child(-n+1)', array('first-li')),
-            array('li:nth-child(-n+3)', array('first-li', 'second-li', 'third-li')),
-            array('li:nth-last-child(0)', array()),
-            array('li:nth-last-child(2n)', array('second-li', 'fourth-li', 'sixth-li')),
-            array('li:nth-last-child(even)', array('second-li', 'fourth-li', 'sixth-li')),
-            array('li:nth-last-child(2n+2)', array('second-li', 'fourth-li', 'sixth-li')),
-            array('li:nth-last-child(n)', array('first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li')),
-            array('li:nth-last-child(n-1)', array('first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li')),
-            array('li:nth-last-child(n-3)', array('first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li')),
-            array('li:nth-last-child(n+1)', array('first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li')),
-            array('li:nth-last-child(n+3)', array('first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li')),
-            array('li:nth-last-child(-n)', array()),
-            array('li:nth-last-child(-n-1)', array()),
-            array('li:nth-last-child(-n+1)', array('seventh-li')),
-            array('li:nth-last-child(-n+3)', array('fifth-li', 'sixth-li', 'seventh-li')),
-            array('ol:first-of-type', array('first-ol')),
-            array('ol:nth-child(1)', array('first-ol')),
-            array('ol:nth-of-type(2)', array('second-ol')),
-            array('ol:nth-last-of-type(1)', array('second-ol')),
-            array('span:only-child', array('foobar-span')),
-            array('li div:only-child', array('li-div')),
-            array('div *:only-child', array('li-div', 'foobar-span')),
-            array('p:only-of-type', array('paragraph')),
-            array('a:empty', array('name-anchor')),
-            array('a:EMpty', array('name-anchor')),
-            array('li:empty', array('third-li', 'fourth-li', 'fifth-li', 'sixth-li')),
-            array(':root', array('html')),
-            array('html:root', array('html')),
-            array('li:root', array()),
-            array('* :root', array()),
-            array('*:contains("link")', array('html', 'outer-div', 'tag-anchor', 'nofollow-anchor')),
-            array(':CONtains("link")', array('html', 'outer-div', 'tag-anchor', 'nofollow-anchor')),
-            array('*:contains("LInk")', array()),  // case sensitive
-            array('*:contains("e")', array('html', 'nil', 'outer-div', 'first-ol', 'first-li', 'paragraph', 'p-em')),
-            array('*:contains("E")', array()),  // case-sensitive
-            array('.a', array('first-ol')),
-            array('.b', array('first-ol')),
-            array('*.a', array('first-ol')),
-            array('ol.a', array('first-ol')),
-            array('.c', array('first-ol', 'third-li', 'fourth-li')),
-            array('*.c', array('first-ol', 'third-li', 'fourth-li')),
-            array('ol *.c', array('third-li', 'fourth-li')),
-            array('ol li.c', array('third-li', 'fourth-li')),
-        
F438
    array('li ~ li.c', array('third-li', 'fourth-li')),
-            array('ol > li.c', array('third-li', 'fourth-li')),
-            array('#first-li', array('first-li')),
-            array('li#first-li', array('first-li')),
-            array('*#first-li', array('first-li')),
-            array('li div', array('li-div')),
-            array('li > div', array('li-div')),
-            array('div div', array('li-div')),
-            array('div > div', array()),
-            array('div>.c', array('first-ol')),
-            array('div > .c', array('first-ol')),
-            array('div + div', array('foobar-div')),
-            array('a ~ a', array('tag-anchor', 'nofollow-anchor')),
-            array('a[rel="tag"] ~ a', array('nofollow-anchor')),
-            array('ol#first-ol li:last-child', array('seventh-li')),
-            array('ol#first-ol *:last-child', array('li-div', 'seventh-li')),
-            array('#outer-div:first-child', array('outer-div')),
-            array('#outer-div :first-child', array('name-anchor', 'first-li', 'li-div', 'p-b', 'checkbox-fieldset-disabled', 'area-href')),
-            array('a[href]', array('tag-anchor', 'nofollow-anchor')),
-            array(':not(*)', array()),
-            array('a:not([href])', array('name-anchor')),
-            array('ol :Not(li[class])', array('first-li', 'second-li', 'li-div', 'fifth-li', 'sixth-li', 'seventh-li')),
+            [':lang("EN")', ['second-li', 'li-div']],
+            ['*:lang(en-US)', ['second-li', 'li-div']],
+            [':lang("e")', []],
+            ['li:nth-child(3)', ['third-li']],
+            ['li:nth-child(10)', []],
+            ['li:nth-child(2n)', ['second-li', 'fourth-li', 'sixth-li']],
+            ['li:nth-child(even)', ['second-li', 'fourth-li', 'sixth-li']],
+            ['li:nth-child(2n+0)', ['second-li', 'fourth-li', 'sixth-li']],
+            ['li:nth-child(+2n+1)', ['first-li', 'third-li', 'fifth-li', 'seventh-li']],
+            ['li:nth-child(odd)', ['first-li', 'third-li', 'fifth-li', 'seventh-li']],
+            ['li:nth-child(2n+4)', ['fourth-li', 'sixth-li']],
+            ['li:nth-child(3n+1)', ['first-li', 'fourth-li', 'seventh-li']],
+            ['li:nth-child(n)', ['first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li']],
+            ['li:nth-child(n-1)', ['first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li']],
+            ['li:nth-child(n+1)', ['first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li']],
+            ['li:nth-child(n+3)', ['third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li']],
+            ['li:nth-child(-n)', []],
+            ['li:nth-child(-n-1)', []],
+            ['li:nth-child(-n+1)', ['first-li']],
+            ['li:nth-child(-n+3)', ['first-li', 'second-li', 'third-li']],
+            ['li:nth-last-child(0)', []],
+            ['li:nth-last-child(2n)', ['second-li', 'fourth-li', 'sixth-li']],
+            ['li:nth-last-child(even)', ['second-li', 'fourth-li', 'sixth-li']],
+            ['li:nth-last-child(2n+2)', ['second-li', 'fourth-li', 'sixth-li']],
+            ['li:nth-last-child(n)', ['first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li']],
+            ['li:nth-last-child(n-1)', ['first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li']],
+            ['li:nth-last-child(n-3)', ['first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li']],
+            ['li:nth-last-child(n+1)', ['first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li', 'sixth-li', 'seventh-li']],
+            ['li:nth-last-child(n+3)', ['first-li', 'second-li', 'third-li', 'fourth-li', 'fifth-li']],
+            ['li:nth-last-child(-n)', []],
+            ['li:nth-last-child(-n-1)', []],
+            ['li:nth-last-child(-n+1)', ['seventh-li']],
+            ['li:nth-last-child(-n+3)', ['fifth-li', 'sixth-li', 'seventh-li']],
+            ['ol:first-of-type', ['first-ol']],
+            ['ol:nth-child(1)', ['first-ol']],
+            ['ol:nth-of-type(2)', ['second-ol']],
+            ['ol:nth-last-of-type(1)', ['second-ol']],
+            ['span:only-child', ['foobar-span']],
+            ['li div:only-child', ['li-div']],
+            ['div *:only-child', ['li-div', 'foobar-span']],
+            ['p:only-of-type', ['paragraph']],
+            ['a:empty', ['name-anchor']],
+            ['a:EMpty', ['name-anchor']],
+            ['li:empty', ['third-li', 'fourth-li', 'fifth-li', 'sixth-li']],
+            [':root', ['html']],
+            ['html:root', ['html']],
+            ['li:root', []],
+            ['* :root', []],
+            ['*:contains("link")', ['html', 'outer-div', 'tag-anchor', 'nofollow-anchor']],
+            [':CONtains("link")', ['html', 'outer-div', 'tag-anchor', 'nofollow-anchor']],
+            ['*:contains("LInk")', []],  // case sensitive
+            ['*:contains("e")', ['html', 'nil', 'outer-div', 'first-ol', 'first-li', 'paragraph', 'p-em']],
+            ['*:contains("E")', []],  // case-sensitive
+            ['.a', ['first-ol']],
+            ['.b', ['first-ol']],
+            ['*.a', ['first-ol']],
+            ['ol.a', ['first-ol']],
+            ['.c', ['first-ol', 'third-li', 'fourth-li']],
+            ['*.c', ['first-ol', 'third-li', 'fourth-li']],
+            ['ol *.c', ['third-li', 'fourth-li']],
+            ['ol li.c', ['third-li', 'fourth-li']],
+            ['li ~ li.c', ['third-li', 'fourth-li']],
+            ['ol > li.c', ['third-li', 'fourth-li']],
+            ['#first-li', ['first-li']],
+            ['li#first-li', ['first-li']],
+            ['*#first-li', ['first-li']],
+            ['li div', ['li-div']],
+            ['li > div', ['li-div']],
+            ['div div', ['li-div']],
+            ['div > div', []],
+            ['div>.c', ['first-ol']],
+            ['div > .c', ['first-ol']],
+            ['div + div', ['foobar-div']],
+            ['a ~ a', ['tag-anchor', 'nofollow-anchor']],
+            ['a[rel="tag"] ~ a', ['nofollow-anchor']],
+            ['ol#first-ol li:last-child', ['seventh-li']],
+            ['ol#first-ol *:last-child', ['li-div', 'seventh-li']],
+            ['#outer-div:first-child', ['outer-div']],
+            ['#outer-div :first-child', ['name-anchor', 'first-li', 'li-div', 'p-b', 'checkbox-fieldset-disabled', 'area-href']],
+            ['a[href]', ['tag-anchor', 'nofollow-anchor']],
+            [':not(*)', []],
+            ['a:not([href])', ['name-anchor']],
+            ['ol :Not(li[class])', ['first-li', 'second-li', 'li-div', 'fifth-li', 'sixth-li', 'seventh-li']],
             // HTML-specific
-            array(':link', array('link-href', 'tag-anchor', 'nofollow-anchor', 'area-href')),
-            array(':visited', array()),
-            array(':enabled', array('link-href', 'tag-anchor', 'nofollow-anchor', 'checkbox-unchecked', 'text-checked', 'checkbox-checked', 'area-href')),
-            array(':disabled', array('checkbox-disabled', 'checkbox-disabled-checked', 'fieldset', 'checkbox-fieldset-disabled')),
-            array(':checked', array('checkbox-checked', 'checkbox-disabled-checked')),
-        );
+            [':link', ['link-href', 'tag-anchor', 'nofollow-anchor', 'area-href']],
+            [':visited', []],
+            [':enabled', ['link-href', 'tag-anchor', 'nofollow-anchor', 'checkbox-unchecked', 'text-checked', 'checkbox-checked', 'area-href']],
+            [':disabled', ['checkbox-disabled', 'checkbox-disabled-checked', 'fieldset', 'checkbox-fieldset-disabled']],
+            [':checked', ['checkbox-checked', 'checkbox-disabled-checked']],
+        ];
     }
 
     public function getHtmlShakespearTestData()
     {
-        return array(
-            array('*', 246),
-            array('div:contains(CELIA)', 26),
-            array('div:only-child', 22), // ?
-            array('div:nth-child(even)', 106),
-            array('div:nth-child(2n)', 106),
-            array('div:nth-child(odd)', 137),
-            array('div:nth-child(2n+1)', 137),
-            array('div:nth-child(n)', 243),
-            array('div:last-child', 53),
-            array('div:first-child', 51),
-            array('div > div', 242),
-            array('div + div', 190),
-            array('div ~ div', 190),
-            array('body', 1),
-            array('body div', 243),
-            array('div', 243),
-            array('div div', 242),
-            array('div div div', 241),
-            array('div, div, div', 243),
-            array('div, a, span', 243),
-            array('.dialog', 51),
-            array('div.dialog', 51),
-            array('div .dialog', 51),
-            array('div.character, div.dialog', 99),
-            array('div.direction.dialog', 0),
-            array('div.dialog.direction', 0),
-            array('div.dialog.scene', 1),
-            array('div.scene.scene', 1),
-            array('div.scene .scene', 0),
-            array('div.direction .dialog ', 0),
-            array('div .dialog .direction', 4),
-            array('div.dialog .dialog .direction', 4),
-            array('#speech5', 1),
-            array('div#speech5', 1),
-            array('div #speech5', 1),
-            array('div.scene div.dialog', 49),
-            array('div#scene1 div.dialog div', 142),
-            array('#scene1 #speech1', 1),
-            array('div[class]', 103),
-            array('div[class=dialog]', 50),
-            array('div[class^=dia]', 51),
-            array('div[class$=log]', 50),
-            array('div[class*=sce]', 1),
-            array('div[class|=dialog]', 50), // ? Seems right
-            array('div[class!=madeup]', 243), // ? Seems right
-            array('div[class~=dialog]', 51), // ? Seems right
-        );
+        return [
+            ['*', 246],
+            ['div:contains(CELIA)', 26],
+            ['div:only-child', 22], // ?
+            ['div:nth-child(even)', 106],
+            ['div:nth-child(2n)', 106],
+            ['div:nth-child(odd)', 137],
+            ['div:nth-child(2n+1)', 137],
+            ['div:nth-child(n)', 243],
+            ['div:last-child', 53],
+            ['div:first-child', 51],
+            ['div > div', 242],
+            ['div + div', 190],
+            ['div ~ div', 190],
+            ['body', 1],
+            ['body div', 243],
+            ['div', 243],
+            ['div div', 242],
+            ['div div div', 241],
+            ['div, div, div', 243],
+            ['div, a, span', 243],
+            ['.dialog', 51],
+            ['div.dialog', 51],
+            ['div .dialog', 51],
+            ['div.character, div.dialog', 99],
+            ['div.direction.dialog', 0],
+            ['div.dialog.direction', 0],
+            ['div.dialog.scene', 1],
+            ['div.scene.scene', 1],
+            ['div.scene .scene', 0],
+            ['div.direction .dialog ', 0],
+            ['div .dialog .direction', 4],
+            ['div.dialog .dialog .direction', 4],
+            ['#speech5', 1],
+            ['div#speech5', 1],
+            ['div #speech5', 1],
+            ['div.scene div.dialog', 49],
+            ['div#scene1 div.dialog div', 142],
+            ['#scene1 #speech1', 1],
+            ['div[class]', 103],
+            ['div[class=dialog]', 50],
+            ['div[class^=dia]', 51],
+            ['div[class$=log]', 50],
+            ['div[class*=sce]', 1],
+            ['div[class|=dialog]', 50], // ? Seems right
+            ['div[class!=madeup]', 243], // ? Seems right
+            ['div[class~=dialog]', 51], // ? Seems right
+        ];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/XPath/Extension/AbstractExtension.php b/src/Symfony/Component/CssSelector/XPath/Extension/AbstractExtension.php
index 026ac06c79f2..1dce1eddff2c 100644
--- a/src/Symfony/Component/CssSelector/XPath/Extension/AbstractExtension.php
+++ b/src/Symfony/Component/CssSelector/XPath/Extension/AbstractExtension.php
@@ -28,7 +28,7 @@ abstract class AbstractExtension implements ExtensionInterface
      */
     public function getNodeTranslators()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -36,7 +36,7 @@ public function getNodeTranslators()
      */
     public function getCombinationTranslators()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -44,7 +44,7 @@ public function getCombinationTranslators()
      */
     public function getFunctionTranslators()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -52,7 +52,7 @@ public function getFunctionTranslators()
      */
     public function getPseudoClassTranslators()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -60,6 +60,6 @@ public function getPseudoClassTranslators()
      */
     public function getAttributeMatchingTranslators()
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/CssSelector/XPath/Extension/AttributeMatchingExtension.php b/src/Symfony/Component/CssSelector/XPath/Extension/AttributeMatchingExtension.php
index 2078dca61da1..0571b3b7651e 100644
--- a/src/Symfony/Component/CssSelector/XPath/Extension/AttributeMatchingExtension.php
+++ b/src/Symfony/Component/CssSelector/XPath/Extension/AttributeMatchingExtension.php
@@ -31,16 +31,16 @@ class AttributeMatchingExtension extends AbstractExtension
      */
     public function getAttributeMatchingTranslators()
     {
-        return array(
-            'exists' => array($this, 'translateExists'),
-            '=' => array($this, 'translateEquals'),
-            '~=' => array($this, 'translateIncludes'),
-            '|=' => array($this, 'translateDashMatch'),
-            '^=' => array($this, 'translatePrefixMatch'),
-            '$=' => array($this, 'translateSuffixMatch'),
-            '*=' => array($this, 'translateSubstringMatch'),
-            '!=' => array($this, 'translateDifferent'),
-        );
+        return [
+            'exists' => [$this, 'translateExists'],
+            '=' => [$this, 'translateEquals'],
+            '~=' => [$this, 'translateIncludes'],
+            '|=' => [$this, 'translateDashMatch'],
+            '^=' => [$this, 'translatePrefixMatch'],
+            '$=' => [$this, 'translateSuffixMatch'],
+            '*=' => [$this, 'translateSubstringMatch'],
+            '!=' => [$this, 'translateDifferent'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/CssSelector/XPath/Extension/CombinationExtension.php b/src/Symfony/Component/CssSelector/XPath/Extension/CombinationExtension.php
index 0c9cc0320c3c..d962dc5ab274 100644
--- a/src/Symfony/Component/CssSelector/XPath/Extension/CombinationExtension.php
+++ b/src/Symfony/Component/CssSelector/XPath/Extension/CombinationExtension.php
@@ -30,12 +30,12 @@ class CombinationExtension extends AbstractExtension
      */
     public function getCombinationTranslators()
     {
-        return array(
-            ' ' => array($this, 'translateDescendant'),
-            '>' => array($this, 'translateChild'),
-            '+' => array($this, 'translateDirectAdjacent'),
-            '~' => array($this, 'translateIndirectAdjacent'),
-        );
+        return [
+            ' ' => [$this, 'translateDescendant'],
+            '>' => [$this, 'translateChild'],
+            '+' => [$this, 'translateDirectAdjacent'],
+            '~' => [$this, 'translateIndirectAdjacent'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/CssSelector/XPath/Extension/FunctionExtension.php b/src/Symfony/Component/CssSelector/XPath/Extension/FunctionExtension.php
index 4d34d0ef2401..a8e0b69f1276 100644
--- a/src/Symfony/Component/CssSelector/XPath/Extension/FunctionExtension.php
+++ b/src/Symfony/Component/CssSelector/XPath/Extension/FunctionExtension.php
@@ -35,14 +35,14 @@ class FunctionExtension extends AbstractExtension
      */
     public function getFunctionTranslators()
     {
-        return array(
-            'nth-child' => array($this, 'translateNthChild'),
-            'nth-last-child' => array($this, 'translateNthLastChild'),
-            'nth-of-type' => array($this, 'translateNthOfType'),
-            'nth-last-of-type' => array($this, 'translateNthLastOfType'),
-            'contains' => array($this, 'translateContains'),
-            'lang' => array($this, 'translateLang'),
-        );
+        return [
+            'nth-child' => [$this, 'translateNthChild'],
+            'nth-last-child' => [$this, 'translateNthLastChild'],
+            'nth-of-type' => [$this, 'translateNthOfType'],
+            'nth-last-of-type' => [$this, 'translateNthLastOfType'],
+            'contains' => [$this, 'translateContains'],
+            'lang' => [$this, 'translateLang'],
+        ];
     }
 
     /**
@@ -93,7 +93,7 @@ public function translateNthChild(XPathExpr $xpath, FunctionNode $function, $las
             $expr .= ' - '.$b;
         }
 
-        $conditions = array(sprintf('%s %s 0', $expr, $sign));
+        $conditions = [sprintf('%s %s 0', $expr, $sign)];
 
         if (1 !== $a && -1 !== $a) {
             $conditions[] = sprintf('(%s) mod %d = 0', $expr, $a);
diff --git a/src/Symfony/Component/CssSelector/XPath/Extension/HtmlExtension.php b/src/Symfony/Component/CssSelector/XPath/Extension/HtmlExtension.php
index cd8e0d5fd867..99c1166c0172 100644
--- a/src/Symfony/Component/CssSelector/XPath/Extension/HtmlExtension.php
+++ b/src/Symfony/Component/CssSelector/XPath/Extension/HtmlExtension.php
@@ -41,16 +41,16 @@ public function __construct(Translator $translator)
      */
     public function getPseudoClassTranslators()
     {
-        return array(
-            'checked' => array($this, 'translateChecked'),
-            'link' => array($this, 'translateLink'),
-            'disabled' => array($this, 'translateDisabled'),
-            'enabled' => array($this, 'translateEnabled'),
-            'selected' => array($this, 'translateSelected'),
-            'invalid' => array($this, 'translateInvalid'),
-            'hover' => array($this, 'translateHover'),
-            'visited' => array($this, 'translateVisited'),
-        );
+        return [
+            'checked' => [$this, 'translateChecked'],
+            'link' => [$this, 'translateLink'],
+            'disabled' => [$this, 'translateDisabled'],
+            'enabled' => [$this, 'translateEnabled'],
+            'selected' => [$this, 'translateSelected'],
+            'invalid' => [$this, 'translateInvalid'],
+            'hover' => [$this, 'translateHover'],
+            'visited' => [$this, 'translateVisited'],
+        ];
     }
 
     /**
@@ -58,9 +58,9 @@ public function getPseudoClassTranslators()
      */
     public function getFunctionTranslators()
     {
-        return array(
-            'lang' => array($this, 'translateLang'),
-        );
+        return [
+            'lang' => [$this, 'translateLang'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/CssSelector/XPath/Extension/NodeExtension.php b/src/Symfony/Component/CssSelector/XPath/Extension/NodeExtension.php
index 715d9611a826..de222af349af 100644
--- a/src/Symfony/Component/CssSelector/XPath/Extension/NodeExtension.php
+++ b/src/Symfony/Component/CssSelector/XPath/Extension/NodeExtension.php
@@ -75,17 +75,17 @@ public function hasFlag($flag)
      */
     public function getNodeTranslators()
     {
-        return array(
-            'Selector' => array($this, 'translateSelector'),
-            'CombinedSelector' => array($this, 'translateCombinedSelector'),
-            'Negation' => array($this, 'translateNegation'),
-            'Function' => array($this, 'translateFunction'),
-            'Pseudo' => array($this, 'translatePseudo'),
-            'Attribute' => array($this, 'translateAttribute'),
-            'Class' => array($this, 'translateClass'),
-            'Hash' => array($this, 'translateHash'),
-            'Element' => array($this, 'translateElement'),
-        );
+        return [
+            'Selector' => [$this, 'translateSelector'],
+            'CombinedSelector' => [$this, 'translateCombinedSelector'],
+            'Negation' => [$this, 'translateNegation'],
+            'Function' => [$this, 'translateFunction'],
+            'Pseudo' => [$this, 'translatePseudo'],
+            'Attribute' => [$this, 'translateAttribute'],
+            'Class' => [$this, 'translateClass'],
+            'Hash' => [$this, 'translateHash'],
+            'Element' => [$this, 'translateElement'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/CssSelector/XPath/Extension/PseudoClassExtension.php b/src/Symfony/Component/CssSelector/XPath/Extension/PseudoClassExtension.php
index 378dfb7de177..27fe47f9a56f 100644
--- a/src/Symfony/Component/CssSelector/XPath/Extension/PseudoClassExtension.php
+++ b/src/Symfony/Component/CssSelector/XPath/Extension/PseudoClassExtension.php
@@ -31,16 +31,16 @@ class PseudoClassExtension extends AbstractExtension
      */
     public function getPseudoClassTranslators()
     {
-        return array(
-            'root' => array($this, 'translateRoot'),
-            'first-child' => array($this, 'translateFirstChild'),
-            'last-child' => array($this, 'translateLastChild'),
-            'first-of-type' => array($this, 'translateFirstOfType'),
-            'last-of-type' => array($this, 'translateLastOfType'),
-            'only-child' => array($this, 'translateOnlyChild'),
-            'only-of-type' => array($this, 'translateOnlyOfType'),
-            'empty' => array($this, 'translateEmpty'),
-        );
+        return [
+            'root' => [$this, 'translateRoot'],
+            'first-child' => [$this, 'translateFirstChild'],
+            'last-child' => [$this, 'translateLastChild'],
+            'first-of-type' => [$this, 'translateFirstOfType'],
+            'last-of-type' => [$this, 'translateLastOfType'],
+            'only-child' => [$this, 'translateOnlyChild'],
+            'only-of-type' => [$this, 'translateOnlyOfType'],
+            'empty' => [$this, 'translateEmpty'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/CssSelector/XPath/Translator.php b/src/Symfony/Component/CssSelector/XPath/Translator.php
index f8585a057dab..d078126772e9 100644
--- a/src/Symfony/Component/CssSelector/XPath/Translator.php
+++ b/src/Symfony/Component/CssSelector/XPath/Translator.php
@@ -35,18 +35,18 @@ class Translator implements TranslatorInterface
     /**
      * @var ParserInterface[]
      */
-    private $shortcutParsers = array();
+    private $shortcutParsers = [];
 
     /**
      * @var Extension\ExtensionInterface[]
      */
-    private $extensions = array();
+    private $extensions = [];
 
-    private $nodeTranslators = array();
-    private $combinationTranslators = array();
-    private $functionTranslators = array();
-    private $pseudoClassTranslators = array();
-    private $attributeMatchingTranslators = array();
+    private $nodeTranslators = [];
+    private $combinationTranslators = [];
+    private $functionTranslators = [];
+    private $pseudoClassTranslators = [];
+    private $attributeMatchingTranslators = [];
 
     public function __construct(ParserInterface $parser = null)
     {
@@ -77,7 +77,7 @@ public static function getXpathLiteral($element)
         }
 
         $string = $element;
-        $parts = array();
+        $parts = [];
         while (true) {
             if (false !== $pos = strpos($string, "'")) {
                 $parts[] = sprintf("'%s'", substr($string, 0, $pos));
diff --git a/src/Symfony/Component/Debug/BufferingLogger.php b/src/Symfony/Component/Debug/BufferingLogger.php
index a2ed75b9dc9f..e7db3a4ce4c6 100644
--- a/src/Symfony/Component/Debug/BufferingLogger.php
+++ b/src/Symfony/Component/Debug/BufferingLogger.php
@@ -20,17 +20,17 @@
  */
 class BufferingLogger extends AbstractLogger
 {
-    private $logs = array();
+    private $logs = [];
 
-    public function log($level, $message, array $context = array())
+    public function log($level, $message, array $context = [])
     {
-        $this->logs[] = array($level, $message, $context);
+        $this->logs[] = [$level, $message, $context];
     }
 
     public function cleanLogs()
     {
         $logs = $this->logs;
-        $this->logs = array();
+        $this->logs = [];
 
         return $logs;
     }
diff --git a/src/Symfony/Component/Debug/Debug.php b/src/Symfony/Component/Debug/Debug.php
index 2a3d7f31593b..498d30935c97 100644
--- a/src/Symfony/Component/Debug/Debug.php
+++ b/src/Symfony/Component/Debug/Debug.php
@@ -42,7 +42,7 @@ public static function enable($errorReportingLevel = E_ALL, $displayErrors = tru
             error_reporting(E_ALL);
         }
 
-        if (!\in_array(\PHP_SAPI, array('cli', 'phpdbg'), true)) {
+        if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true)) {
             ini_set('display_errors', 0);
             ExceptionHandler::register();
         } elseif ($displayErrors && (!filter_var(ini_get('log_errors'), FILTER_VALIDATE_BOOLEAN) || ini_get('error_log'))) {
diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index 88e4890ead7c..86b7fb6a0430 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -26,16 +26,16 @@ class DebugClassLoader
 {
     private $classLoader;
     private $isFinder;
-    private $loaded = array();
+    private $loaded = [];
     private static $caseCheck;
-    private static $checkedClasses = array();
-    private static $final = array();
-    private static $finalMethods = array();
-    private static $deprecated = array();
-    private static $internal = array();
-    private static $internalMethods = array();
-    private static $php7Reserved = array('int' => 1, 'float' => 1, 'bool' => 1, 'string' => 1, 'true' => 1, 'false' => 1, 'null' => 1);
-    private static $darwinCache = array('/' => array('/', array()));
+    private static $checkedClasses = [];
+    private static $final = [];
+    private static $finalMethods = [];
+    private static $deprecated = [];
+    private static $internal = [];
+    private static $internalMethods = [];
+    private static $php7Reserved = ['int' => 1, 'float' => 1, 'bool' => 1, 'string' => 1, 'true' => 1, 'false' => 1, 'null' => 1];
+    private static $darwinCache = ['/' => ['/', []]];
 
     public function __construct(callable $classLoader)
     {
@@ -95,7 +95,7 @@ class_exists('Psr\Log\LogLevel');
 
         foreach ($functions as $function) {
             if (!\is_array($function) || !$function[0] instanceof self) {
-                $function = array(new static($function), 'loadClass');
+                $function = [new static($function), 'loadClass'];
             }
 
             spl_autoload_register($function);
@@ -220,7 +220,7 @@ private function checkClass($class, $file = null)
 
     public function checkAnnotations(\ReflectionClass $refl, $class)
     {
-        $deprecations = array();
+        $deprecations = [];
 
         // Don't trigger deprecations for classes in the same vendor
         if (2 > $len = 1 + (\strpos($class, '\\') ?: \strpos($class, '_'))) {
@@ -232,7 +232,7 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
 
         // Detect annotations on the class
         if (false !== $doc = $refl->getDocComment()) {
-            foreach (array('final', 'deprecated', 'internal') as $annotation) {
+            foreach (['final', 'deprecated', 'internal'] as $annotation) {
                 if (false !== \strpos($doc, $annotation) && preg_match('#\n \* @'.$annotation.'(?:( .+?)\.?)?\r?\n \*(?: @|/$)#s', $doc, $notice)) {
                     self::${$annotation}[$class] = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
                 }
@@ -274,10 +274,10 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
         }
 
         // Inherit @final and @internal annotations for methods
-        self::$finalMethods[$class] = array();
-        self::$internalMethods[$class] = array();
+        self::$finalMethods[$class] = [];
+        self::$internalMethods[$class] = [];
         foreach ($parentAndOwnInterfaces as $use) {
-            foreach (array('finalMethods', 'internalMethods') as $property) {
+            foreach (['finalMethods', 'internalMethods'] as $property) {
                 if (isset(self::${$property}[$use])) {
                     self::${$property}[$class] = self::${$property}[$class] ? self::${$property}[$use] + self::${$property}[$class] : self::${$property}[$use];
                 }
@@ -306,10 +306,10 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
                 continue;
             }
 
-            foreach (array('final', 'internal') as $annotation) {
+            foreach (['final', 'internal'] as $annotation) {
                 if (false !== \strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$)#s', $doc, $notice)) {
                     $message = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
-                    self::${$annotation.'Methods'}[$class][$method->name] = array($class, $message);
+                    self::${$annotation.'Methods'}[$class][$method->name] = [$class, $message];
                 }
             }
         }
@@ -347,7 +347,7 @@ public function checkCase(\ReflectionClass $refl, $file, $class)
         if (0 === substr_compare($real, $tail, -$tailLen, $tailLen, true)
             && 0 !== substr_compare($real, $tail, -$tailLen, $tailLen, false)
         ) {
-            return array(substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1));
+            return [substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)];
         }
     }
 
@@ -377,7 +377,7 @@ private function darwinRealpath($real)
                 $k = $kDir;
                 $i = \strlen($dir) - 1;
                 while (!isset(self::$darwinCache[$k])) {
-                    self::$darwinCache[$k] = array($dir, array());
+                    self::$darwinCache[$k] = [$dir, []];
                     self::$darwinCache[$dir] = &self::$darwinCache[$k];
 
                     while ('/' !== $dir[--$i]) {
diff --git a/src/Symfony/Component/Debug/ErrorHandler.php b/src/Symfony/Component/Debug/ErrorHandler.php
index 69a728041779..64857ed44722 100644
--- a/src/Symfony/Component/Debug/ErrorHandler.php
+++ b/src/Symfony/Component/Debug/ErrorHandler.php
@@ -48,7 +48,7 @@
  */
 class ErrorHandler
 {
-    private $levels = array(
+    private $levels = [
         E_DEPRECATED => 'Deprecated',
         E_USER_DEPRECATED => 'User Deprecated',
         E_NOTICE => 'Notice',
@@ -64,25 +64,25 @@ class ErrorHandler
         E_PARSE => 'Parse Error',
         E_ERROR => 'Error',
         E_CORE_ERROR => 'Core Error',
-    );
-
-    private $loggers = array(
-        E_DEPRECATED => array(null, LogLevel::INFO),
-        E_USER_DEPRECATED => array(null, LogLevel::INFO),
-        E_NOTICE => array(null, LogLevel::WARNING),
-        E_USER_NOTICE => array(null, LogLevel::WARNING),
-        E_STRICT => array(null, LogLevel::WARNING),
-        E_WARNING => array(null, LogLevel::WARNING),
-        E_USER_WARNING => array(null, LogLevel::WARNING),
-        E_COMPILE_WARNING => array(null, LogLevel::WARNING),
-        E_CORE_WARNING => array(null, LogLevel::WARNING),
-        E_USER_ERROR => array(null, LogLevel::CRITICAL),
-        E_RECOVERABLE_ERROR => array(null, LogLevel::CRITICAL),
-        E_COMPILE_ERROR => array(null, LogLevel::CRITICAL),
-        E_PARSE => array(null, LogLevel::CRITICAL),
-        E_ERROR => array(null, LogLevel::CRITICAL),
-        E_CORE_ERROR => array(null, LogLevel::CRITICAL),
-    );
+    ];
+
+    private $loggers = [
+        E_DEPRECATED => [null, LogLevel::INFO],
+        E_USER_DEPRECATED => [null, LogLevel::INFO],
+        E_NOTICE => [null, LogLevel::WARNING],
+        E_USER_NOTICE => [null, LogLevel::WARNING],
+        E_STRICT => [null, LogLevel::WARNING],
+        E_WARNING => [null, LogLevel::WARNING],
+        E_USER_WARNING => [null, LogLevel::WARNING],
+        E_COMPILE_WARNING => [null, LogLevel::WARNING],
+        E_CORE_WARNING => [null, LogLevel::WARNING],
+        E_USER_ERROR => [null, LogLevel::CRITICAL],
+        E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
+        E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
+        E_PARSE => [null, LogLevel::CRITICAL],
+        E_ERROR => [null, LogLevel::CRITICAL],
+        E_CORE_ERROR => [null, LogLevel::CRITICAL],
+    ];
 
     private $thrownErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
     private $scopedErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
@@ -97,10 +97,10 @@ class ErrorHandler
     private $bootstrappingLogger;
 
     private static $reservedMemory;
-    private static $stackedErrors = array();
-    private static $stackedErrorLevels = array();
+    private static $stackedErrors = [];
+    private static $stackedErrorLevels = [];
     private static $toStringException = null;
-    private static $silencedErrorCache = array();
+    private static $silencedErrorCache = [];
     private static $silencedErrorCount = 0;
     private static $exitCode = 0;
 
@@ -123,10 +123,10 @@ public static function register(self $handler = null, $replace = true)
             $handler = new static();
         }
 
-        if (null === $prev = set_error_handler(array($handler, 'handleError'))) {
+        if (null === $prev = set_error_handler([$handler, 'handleError'])) {
             restore_error_handler();
             // Specifying the error types earlier would expose us to https://bugs.php.net/63206
-            set_error_handler(array($handler, 'handleError'), $handler->thrownErrors | $handler->loggedErrors);
+            set_error_handler([$handler, 'handleError'], $handler->thrownErrors | $handler->loggedErrors);
             $handler->isRoot = true;
         }
 
@@ -140,12 +140,12 @@ public static function register(self $handler = null, $replace = true)
         } else {
             $handlerIsRegistered = true;
         }
-        if (\is_array($prev = set_exception_handler(array($handler, 'handleException'))) && $prev[0] instanceof self) {
+        if (\is_array($prev = set_exception_handler([$handler, 'handleException'])) && $prev[0] instanceof self) {
             restore_exception_handler();
             if (!$handlerIsRegistered) {
                 $handler = $prev[0];
             } elseif ($handler !== $prev[0] && $replace) {
-                set_exception_handler(array($handler, 'handleException'));
+                set_exception_handler([$handler, 'handleException']);
                 $p = $prev[0]->setExceptionHandler(null);
                 $handler->setExceptionHandler($p);
                 $prev[0]->setExceptionHandler($p);
@@ -178,12 +178,12 @@ public function __construct(BufferingLogger $bootstrappingLogger = null)
      */
     public function setDefaultLogger(LoggerInterface $logger, $levels = E_ALL, $replace = false)
     {
-        $loggers = array();
+        $loggers = [];
 
         if (\is_array($levels)) {
             foreach ($levels as $type => $logLevel) {
                 if (empty($this->loggers[$type][0]) || $replace || $this->loggers[$type][0] === $this->bootstrappingLogger) {
-                    $loggers[$type] = array($logger, $logLevel);
+                    $loggers[$type] = [$logger, $logLevel];
                 }
             }
         } else {
@@ -214,14 +214,14 @@ public function setLoggers(array $loggers)
     {
         $prevLogged = $this->loggedErrors;
         $prev = $this->loggers;
-        $flush = array();
+        $flush = [];
 
         foreach ($loggers as $type => $log) {
             if (!isset($prev[$type])) {
                 throw new \InvalidArgumentException('Unknown error type: '.$type);
             }
             if (!\is_array($log)) {
-                $log = array($log);
+                $log = [$log];
             } elseif (!array_key_exists(0, $log)) {
                 throw new \InvalidArgumentException('No logger provided');
             }
@@ -358,9 +358,9 @@ private function reRegister($prev)
             if ($handler === $this) {
                 restore_error_handler();
                 if ($this->isRoot) {
-                    set_error_handler(array($this, 'handleError'), $this->thrownErrors | $this->loggedErrors);
+                    set_error_handler([$this, 'handleError'], $this->thrownErrors | $this->loggedErrors);
                 } else {
-                    set_error_handler(array($this, 'handleError'));
+                    set_error_handler([$this, 'handleError']);
                 }
             }
         }
@@ -397,10 +397,10 @@ public function handleError($type, $message, $file, $line)
         $scope = $this->scopedErrors & $type;
 
         if (4 < $numArgs = \func_num_args()) {
-            $context = $scope ? (func_get_arg(4) ?: array()) : array();
+            $context = $scope ? (func_get_arg(4) ?: []) : [];
             $backtrace = 5 < $numArgs ? func_get_arg(5) : null; // defined on HHVM
         } else {
-            $context = array();
+            $context = [];
             $backtrace = null;
         }
 
@@ -426,19 +426,19 @@ public function handleError($type, $message, $file, $line)
             self::$toStringException = null;
         } elseif (!$throw && !($type & $level)) {
             if (!isset(self::$silencedErrorCache[$id = $file.':'.$line])) {
-                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : array();
+                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : [];
                 $errorAsException = new SilencedErrorContext($type, $file, $line, $lightTrace);
             } elseif (isset(self::$silencedErrorCache[$id][$message])) {
                 $lightTrace = null;
                 $errorAsException = self::$silencedErrorCache[$id][$message];
                 ++$errorAsException->count;
             } else {
-                $lightTrace = array();
+                $lightTrace = [];
                 $errorAsException = null;
             }
 
             if (100 < ++self::$silencedErrorCount) {
-                self::$silencedErrorCache = $lightTrace = array();
+                self::$silencedErrorCache = $lightTrace = [];
                 self::$silencedErrorCount = 1;
             }
             if ($errorAsException) {
@@ -460,7 +460,7 @@ public function handleError($type, $message, $file, $line)
                 $lightTrace = $this->cleanTrace($backtrace, $type, $file, $line, $throw);
                 $this->traceReflector->setValue($errorAsException, $lightTrace);
             } else {
-                $this->traceReflector->setValue($errorAsException, array());
+                $this->traceReflector->setValue($errorAsException, []);
             }
         }
 
@@ -510,17 +510,17 @@ public function handleError($type, $message, $file, $line)
         if ($this->isRecursive) {
             $log = 0;
         } elseif (self::$stackedErrorLevels) {
-            self::$stackedErrors[] = array(
+            self::$stackedErrors[] = [
                 $this->loggers[$type][0],
                 ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG,
                 $logMessage,
-                $errorAsException ? array('exception' => $errorAsException) : array(),
-            );
+                $errorAsException ? ['exception' => $errorAsException] : [],
+            ];
         } else {
             try {
                 $this->isRecursive = true;
                 $level = ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG;
-                $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? array('exception' => $errorAsException) : array());
+                $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? ['exception' => $errorAsException] : []);
             } finally {
                 $this->isRecursive = false;
             }
@@ -551,12 +551,12 @@ public function handleException($exception, array $error = null)
         if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
             if ($exception instanceof FatalErrorException) {
                 if ($exception instanceof FatalThrowableError) {
-                    $error = array(
+                    $error = [
                         'type' => $type,
                         'message' => $message = $exception->getMessage(),
                         'file' => $exception->getFile(),
                         'line' => $exception->getLine(),
-                    );
+                    ];
                 } else {
                     $message = 'Fatal '.$exception->getMessage();
                 }
@@ -568,7 +568,7 @@ public function handleException($exception, array $error = null)
         }
         if ($this->loggedErrors & $type) {
             try {
-                $this->loggers[$type][0]->log($this->loggers[$type][1], $message, array('exception' => $exception));
+                $this->loggers[$type][0]->log($this->loggers[$type][1], $message, ['exception' => $exception]);
             } catch (\Exception $handlerException) {
             } catch (\Throwable $handlerException) {
             }
@@ -612,7 +612,7 @@ public static function handleFatalError(array $error = null)
         }
 
         $handler = self::$reservedMemory = null;
-        $handlers = array();
+        $handlers = [];
         $previousHandler = null;
         $sameHandlerLimit = 10;
 
@@ -643,7 +643,7 @@ public static function handleFatalError(array $error = null)
             $handler[0]->setExceptionHandler($h);
         }
         $handler = $handler[0];
-        $handlers = array();
+        $handlers = [];
 
         if ($exit = null === $error) {
             $error = error_get_last();
@@ -727,7 +727,7 @@ public static function unstackErrors()
 
         if (empty(self::$stackedErrorLevels)) {
             $errors = self::$stackedErrors;
-            self::$stackedErrors = array();
+            self::$stackedErrors = [];
 
             foreach ($errors as $error) {
                 $error[0]->log($error[1], $error[2], $error[3]);
@@ -744,11 +744,11 @@ public static function unstackErrors()
      */
     protected function getFatalErrorHandlers()
     {
-        return array(
+        return [
             new UndefinedFunctionFatalErrorHandler(),
             new UndefinedMethodFatalErrorHandler(),
             new ClassNotFoundFatalErrorHandler(),
-        );
+        ];
     }
 
     private function cleanTrace($backtrace, $type, $file, $line, $throw)
diff --git a/src/Symfony/Component/Debug/Exception/ContextErrorException.php b/src/Symfony/Component/Debug/Exception/ContextErrorException.php
index 554139da3bf1..930f37776327 100644
--- a/src/Symfony/Component/Debug/Exception/ContextErrorException.php
+++ b/src/Symfony/Component/Debug/Exception/ContextErrorException.php
@@ -20,9 +20,9 @@
  */
 class ContextErrorException extends \ErrorException
 {
-    private $context = array();
+    private $context = [];
 
-    public function __construct($message, $code, $severity, $filename, $lineno, $context = array())
+    public function __construct($message, $code, $severity, $filename, $lineno, $context = [])
     {
         parent::__construct($message, $code, $severity, $filename, $lineno);
         $this->context = $context;
diff --git a/src/Symfony/Component/Debug/Exception/FatalErrorException.php b/src/Symfony/Component/Debug/Exception/FatalErrorException.php
index 8d996a422b14..0f70ef929904 100644
--- a/src/Symfony/Component/Debug/Exception/FatalErrorException.php
+++ b/src/Symfony/Component/Debug/Exception/FatalErrorException.php
@@ -66,7 +66,7 @@ public function __construct($message, $code, $severity, $filename, $lineno, $tra
                     array_splice($trace, 0, $traceOffset);
                 }
             } else {
-                $trace = array();
+                $trace = [];
             }
 
             $this->setTrace($trace);
diff --git a/src/Symfony/Component/Debug/Exception/FlattenException.php b/src/Symfony/Component/Debug/Exception/FlattenException.php
index f76cf23f3377..9514bdc5e38f 100644
--- a/src/Symfony/Component/Debug/Exception/FlattenException.php
+++ b/src/Symfony/Component/Debug/Exception/FlattenException.php
@@ -33,7 +33,7 @@ class FlattenException
     private $file;
     private $line;
 
-    public static function create(\Exception $exception, $statusCode = null, array $headers = array())
+    public static function create(\Exception $exception, $statusCode = null, array $headers = [])
     {
         $e = new static();
         $e->setMessage($exception->getMessage());
@@ -70,13 +70,13 @@ public static function create(\Exception $exception, $statusCode = null, array $
 
     public function toArray()
     {
-        $exceptions = array();
-        foreach (array_merge(array($this), $this->getAllPrevious()) as $exception) {
-            $exceptions[] = array(
+        $exceptions = [];
+        foreach (array_merge([$this], $this->getAllPrevious()) as $exception) {
+            $exceptions[] = [
                 'message' => $exception->getMessage(),
                 'class' => $exception->getClass(),
                 'trace' => $exception->getTrace(),
-            );
+            ];
         }
 
         return $exceptions;
@@ -164,7 +164,7 @@ public function setPrevious(self $previous)
 
     public function getAllPrevious()
     {
-        $exceptions = array();
+        $exceptions = [];
         $e = $this;
         while ($e = $e->getPrevious()) {
             $exceptions[] = $e;
@@ -185,8 +185,8 @@ public function setTraceFromException(\Exception $exception)
 
     public function setTrace($trace, $file, $line)
     {
-        $this->trace = array();
-        $this->trace[] = array(
+        $this->trace = [];
+        $this->trace[] = [
             'namespace' => '',
             'short_class' => '',
             'class' => '',
@@ -194,8 +194,8 @@ public function setTrace($trace, $file, $line)
             'function' => '',
             'file' => $file,
             'line' => $line,
-            'args' => array(),
-        );
+            'args' => [],
+        ];
         foreach ($trace as $entry) {
             $class = '';
             $namespace = '';
@@ -205,7 +205,7 @@ public function setTrace($trace, $file, $line)
                 $namespace = implode('\\', $parts);
             }
 
-            $this->trace[] = array(
+            $this->trace[] = [
                 'namespace' => $namespace,
                 'short_class' => $class,
                 'class' => isset($entry['class']) ? $entry['class'] : '',
@@ -213,41 +213,41 @@ public function setTrace($trace, $file, $line)
                 'function' => isset($entry['function']) ? $entry['function'] : null,
                 'file' => isset($entry['file']) ? $entry['file'] : null,
                 'line' => isset($entry['line']) ? $entry['line'] : null,
-                'args' => isset($entry['args']) ? $this->flattenArgs($entry['args']) : array(),
-            );
+                'args' => isset($entry['args']) ? $this->flattenArgs($entry['args']) : [],
+            ];
         }
     }
 
     private function flattenArgs($args, $level = 0, &$count = 0)
     {
-        $result = array();
+        $result = [];
         foreach ($args as $key => $value) {
             if (++$count > 1e4) {
-                return array('array', '*SKIPPED over 10000 entries*');
+                return ['array', '*SKIPPED over 10000 entries*'];
             }
             if ($value instanceof \__PHP_Incomplete_Class) {
                 // is_object() returns false on PHP<=7.1
-                $result[$key] = array('incomplete-object', $this->getClassNameFromIncomplete($value));
+                $result[$key] = ['incomplete-object', $this->getClassNameFromIncomplete($value)];
             } elseif (\is_object($value)) {
-                $result[$key] = array('object', \get_class($value));
+                $result[$key] = ['object', \get_class($value)];
             } elseif (\is_array($value)) {
                 if ($level > 10) {
-                    $result[$key] = array('array', '*DEEP NESTED ARRAY*');
+                    $result[$key] = ['array', '*DEEP NESTED ARRAY*'];
                 } else {
-                    $result[$key] = array('array', $this->flattenArgs($value, $level + 1, $count));
+                    $result[$key] = ['array', $this->flattenArgs($value, $level + 1, $count)];
                 }
             } elseif (null === $value) {
-                $result[$key] = array('null', null);
+                $result[$key] = ['null', null];
             } elseif (\is_bool($value)) {
-                $result[$key] = array('boolean', $value);
+                $result[$key] = ['boolean', $value];
             } elseif (\is_int($value)) {
-                $result[$key] = array('integer', $value);
+                $result[$key] = ['integer', $value];
             } elseif (\is_float($value)) {
-                $result[$key] = array('float', $value);
+                $result[$key] = ['float', $value];
             } elseif (\is_resource($value)) {
-                $result[$key] = array('resource', get_resource_type($value));
+                $result[$key] = ['resource', get_resource_type($value)];
             } else {
-                $result[$key] = array('string', (string) $value);
+                $result[$key] = ['string', (string) $value];
             }
         }
 
diff --git a/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php b/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php
index 4be83491b9df..f862b74f45d7 100644
--- a/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php
+++ b/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php
@@ -25,7 +25,7 @@ class SilencedErrorContext implements \JsonSerializable
     private $line;
     private $trace;
 
-    public function __construct($severity, $file, $line, array $trace = array(), $count = 1)
+    public function __construct($severity, $file, $line, array $trace = [], $count = 1)
     {
         $this->severity = $severity;
         $this->file = $file;
@@ -56,12 +56,12 @@ public function getTrace()
 
     public function JsonSerialize()
     {
-        return array(
+        return [
             'severity' => $this->severity,
             'file' => $this->file,
             'line' => $this->line,
             'trace' => $this->trace,
             'count' => $this->count,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Debug/ExceptionHandler.php b/src/Symfony/Component/Debug/ExceptionHandler.php
index f18ee2a9f092..2f3d56601271 100644
--- a/src/Symfony/Component/Debug/ExceptionHandler.php
+++ b/src/Symfony/Component/Debug/ExceptionHandler.php
@@ -56,10 +56,10 @@ public static function register($debug = true, $charset = null, $fileLinkFormat
     {
         $handler = new static($debug, $charset, $fileLinkFormat);
 
-        $prev = set_exception_handler(array($handler, 'handle'));
+        $prev = set_exception_handler([$handler, 'handle']);
         if (\is_array($prev) && $prev[0] instanceof ErrorHandler) {
             restore_exception_handler();
-            $prev[0]->setExceptionHandler(array($handler, 'handle'));
+            $prev[0]->setExceptionHandler([$handler, 'handle']);
         }
 
         return $handler;
@@ -377,7 +377,7 @@ private function formatPath($path, $line)
 
         if (\is_string($fmt)) {
             $i = strpos($f = $fmt, '&', max(strrpos($f, '%f'), strrpos($f, '%l'))) ?: \strlen($f);
-            $fmt = array(substr($f, 0, $i)) + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);
+            $fmt = [substr($f, 0, $i)] + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);
 
             for ($i = 1; isset($fmt[$i]); ++$i) {
                 if (0 === strpos($path, $k = $fmt[$i++])) {
@@ -386,7 +386,7 @@ private function formatPath($path, $line)
                 }
             }
 
-            $link = strtr($fmt[0], array('%f' => $path, '%l' => $line));
+            $link = strtr($fmt[0], ['%f' => $path, '%l' => $line]);
         } else {
             $link = $fmt->format($path, $line);
         }
@@ -403,7 +403,7 @@ private function formatPath($path, $line)
      */
     private function formatArgs(array $args)
     {
-        $result = array();
+        $result = [];
         foreach ($args as $key => $item) {
             if ('object' === $item[0]) {
                 $formattedValue = sprintf('<em>object</em>(%s)', $this->formatClass($item[1]));
diff --git a/src/Symfony/Component/Debug/FatalErrorHandler/ClassNotFoundFatalErrorHandler.php b/src/Symfony/Component/Debug/FatalErrorHandler/ClassNotFoundFatalErrorHandler.php
index 2b59c14692f4..1ac18ac8f565 100644
--- a/src/Symfony/Component/Debug/FatalErrorHandler/ClassNotFoundFatalErrorHandler.php
+++ b/src/Symfony/Component/Debug/FatalErrorHandler/ClassNotFoundFatalErrorHandler.php
@@ -40,7 +40,7 @@ public function handleError(array $error, FatalErrorException $exception)
             return;
         }
 
-        foreach (array('class', 'interface', 'trait') as $typeName) {
+        foreach (['class', 'interface', 'trait'] as $typeName) {
             $prefix = ucfirst($typeName).' \'';
             $prefixLen = \strlen($prefix);
             if (0 !== strpos($error['message'], $prefix)) {
@@ -86,11 +86,11 @@ public function handleError(array $error, FatalErrorException $exception)
     private function getClassCandidates($class)
     {
         if (!\is_array($functions = spl_autoload_functions())) {
-            return array();
+            return [];
         }
 
         // find Symfony and Composer autoloaders
-        $classes = array();
+        $classes = [];
 
         foreach ($functions as $function) {
             if (!\is_array($function)) {
@@ -134,10 +134,10 @@ private function getClassCandidates($class)
     private function findClassInPath($path, $class, $prefix)
     {
         if (!$path = realpath($path.'/'.strtr($prefix, '\\_', '//')) ?: realpath($path.'/'.\dirname(strtr($prefix, '\\_', '//'))) ?: realpath($path)) {
-            return array();
+            return [];
         }
 
-        $classes = array();
+        $classes = [];
         $filename = $class.'.php';
         foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
             if ($filename == $file->getFileName() && $class = $this->convertFileToClass($path, $file->getPathName(), $prefix)) {
@@ -157,9 +157,9 @@ private function findClassInPath($path, $class, $prefix)
      */
     private function convertFileToClass($path, $file, $prefix)
     {
-        $candidates = array(
+        $candidates = [
             // namespaced class
-            $namespacedClass = str_replace(array($path.\DIRECTORY_SEPARATOR, '.php', '/'), array('', '', '\\'), $file),
+            $namespacedClass = str_replace([$path.\DIRECTORY_SEPARATOR, '.php', '/'], ['', '', '\\'], $file),
             // namespaced class (with target dir)
             $prefix.$namespacedClass,
             // namespaced class (with target dir and separator)
@@ -170,7 +170,7 @@ private function convertFileToClass($path, $file, $prefix)
             str_replace('\\', '_', $prefix.$namespacedClass),
             // PEAR class (with target dir and separator)
             str_replace('\\', '_', $prefix.'\\'.$namespacedClass),
-        );
+        ];
 
         if ($prefix) {
             $candidates = array_filter($candidates, function ($candidate) use ($prefix) { return 0 === strpos($candidate, $prefix); });
diff --git a/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php b/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php
index db2418037748..9eddeba5a64a 100644
--- a/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php
+++ b/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php
@@ -53,7 +53,7 @@ public function handleError(array $error, FatalErrorException $exception)
             $message = sprintf('Attempted to call function "%s" from the global namespace.', $functionName);
         }
 
-        $candidates = array();
+        $candidates = [];
         foreach (get_defined_functions() as $type => $definedFunctionNames) {
             foreach ($definedFunctionNames as $definedFunctionName) {
                 if (false !== $namespaceSeparatorIndex = strrpos($definedFunctionName, '\\')) {
diff --git a/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedMethodFatalErrorHandler.php b/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedMethodFatalErrorHandler.php
index 618a2c208b71..1318cb13baf8 100644
--- a/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedMethodFatalErrorHandler.php
+++ b/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedMethodFatalErrorHandler.php
@@ -41,7 +41,7 @@ public function handleError(array $error, FatalErrorException $exception)
             return new UndefinedMethodException($message, $exception);
         }
 
-        $candidates = array();
+        $candidates = [];
         foreach ($methods as $definedMethodName) {
             $lev = levenshtein($methodName, $definedMethodName);
             if ($lev <= \strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
diff --git a/src/Symfony/Component/Debug/Resources/ext/tests/001.phpt b/src/Symfony/Component/Debug/Resources/ext/tests/001.phpt
index 4a87cd3180b0..86a9427c72f1 100644
--- a/src/Symfony/Component/Debug/Resources/ext/tests/001.phpt
+++ b/src/Symfony/Component/Debug/Resources/ext/tests/001.phpt
@@ -11,7 +11,7 @@ $int = 42;
 $float = 42.42;
 $str = 'foobar';
 $object = new StdClass();
-$array = array('foo', 'bar');
+$array = ['foo', 'bar'];
 $resource = tmpfile();
 $null = null;
 $bool = true;
@@ -19,7 +19,7 @@ $bool = true;
 $anotherint = 42;
 $refcount2 = &$anotherint;
 
-$var = array(
+$var = [
     'int' => $int,
     'float' => $float,
     'str' => $str,
@@ -29,7 +29,7 @@ $var = array(
     'null' => $null,
     'bool' => $bool,
     'refcount' => &$refcount2,
-);
+];
 
 var_dump(symfony_zval_info('int', $var));
 var_dump(symfony_zval_info('float', $var));
diff --git a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
index a8d40e849b6d..98d9f6143da0 100644
--- a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
+++ b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
@@ -38,13 +38,13 @@ public function testRegister()
             $this->assertSame($handler, ErrorHandler::register($newHandler, false));
             $h = set_error_handler('var_dump');
             restore_error_handler();
-            $this->assertSame(array($handler, 'handleError'), $h);
+            $this->assertSame([$handler, 'handleError'], $h);
 
             try {
                 $this->assertSame($newHandler, ErrorHandler::register($newHandler, true));
                 $h = set_error_handler('var_dump');
                 restore_error_handler();
-                $this->assertSame(array($newHandler, 'handleError'), $h);
+                $this->assertSame([$newHandler, 'handleError'], $h);
             } catch (\Exception $e) {
             }
 
@@ -74,12 +74,12 @@ public function testErrorGetLast()
 
         try {
             @trigger_error('Hello', E_USER_WARNING);
-            $expected = array(
+            $expected = [
                 'type' => E_USER_WARNING,
                 'message' => 'Hello',
                 'file' => __FILE__,
                 'line' => __LINE__ - 5,
-            );
+            ];
             $this->assertSame($expected, error_get_last());
         } catch (\Exception $e) {
             restore_error_handler();
@@ -145,26 +145,26 @@ public function testDefaultLogger()
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
             $handler->setDefaultLogger($logger, E_NOTICE);
-            $handler->setDefaultLogger($logger, array(E_USER_NOTICE => LogLevel::CRITICAL));
-
-            $loggers = array(
-                E_DEPRECATED => array(null, LogLevel::INFO),
-                E_USER_DEPRECATED => array(null, LogLevel::INFO),
-                E_NOTICE => array($logger, LogLevel::WARNING),
-                E_USER_NOTICE => array($logger, LogLevel::CRITICAL),
-                E_STRICT => array(null, LogLevel::WARNING),
-                E_WARNING => array(null, LogLevel::WARNING),
-                E_USER_WARNING => array(null, LogLevel::WARNING),
-                E_COMPILE_WARNING => array(null, LogLevel::WARNING),
-                E_CORE_WARNING => array(null, LogLevel::WARNING),
-                E_USER_ERROR => array(null, LogLevel::CRITICAL),
-                E_RECOVERABLE_ERROR => array(null, LogLevel::CRITICAL),
-                E_COMPILE_ERROR => array(null, LogLevel::CRITICAL),
-                E_PARSE => array(null, LogLevel::CRITICAL),
-                E_ERROR => array(null, LogLevel::CRITICAL),
-                E_CORE_ERROR => array(null, LogLevel::CRITICAL),
-            );
-            $this->assertSame($loggers, $handler->setLoggers(array()));
+            $handler->setDefaultLogger($logger, [E_USER_NOTICE => LogLevel::CRITICAL]);
+
+            $loggers = [
+                E_DEPRECATED => [null, LogLevel::INFO],
+                E_USER_DEPRECATED => [null, LogLevel::INFO],
+                E_NOTICE => [$logger, LogLevel::WARNING],
+                E_USER_NOTICE => [$logger, LogLevel::CRITICAL],
+                E_STRICT => [null, LogLevel::WARNING],
+                E_WARNING => [null, LogLevel::WARNING],
+                E_USER_WARNING => [null, LogLevel::WARNING],
+                E_COMPILE_WARNING => [null, LogLevel::WARNING],
+           
10000
     E_CORE_WARNING => [null, LogLevel::WARNING],
+                E_USER_ERROR => [null, LogLevel::CRITICAL],
+                E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
+                E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
+                E_PARSE => [null, LogLevel::CRITICAL],
+                E_ERROR => [null, LogLevel::CRITICAL],
+                E_CORE_ERROR => [null, LogLevel::CRITICAL],
+            ];
+            $this->assertSame($loggers, $handler->setLoggers([]));
         } finally {
             restore_error_handler();
             restore_exception_handler();
@@ -176,14 +176,14 @@ public function testHandleError()
         try {
             $handler = ErrorHandler::register();
             $handler->throwAt(0, true);
-            $this->assertFalse($handler->handleError(0, 'foo', 'foo.php', 12, array()));
+            $this->assertFalse($handler->handleError(0, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $handler = ErrorHandler::register();
             $handler->throwAt(3, true);
-            $this->assertFalse($handler->handleError(4, 'foo', 'foo.php', 12, array()));
+            $this->assertFalse($handler->handleError(4, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
@@ -191,7 +191,7 @@ public function testHandleError()
             $handler = ErrorHandler::register();
             $handler->throwAt(3, true);
             try {
-                $handler->handleError(4, 'foo', 'foo.php', 12, array());
+                $handler->handleError(4, 'foo', 'foo.php', 12, []);
             } catch (\ErrorException $e) {
                 $this->assertSame('Parse Error: foo', $e->getMessage());
                 $this->assertSame(4, $e->getSeverity());
@@ -204,14 +204,14 @@ public function testHandleError()
 
             $handler = ErrorHandler::register();
             $handler->throwAt(E_USER_DEPRECATED, true);
-            $this->assertFalse($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
+            $this->assertFalse($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $handler = ErrorHandler::register();
             $handler->throwAt(E_DEPRECATED, true);
-            $this->assertFalse($handler->handleError(E_DEPRECATED, 'foo', 'foo.php', 12, array()));
+            $this->assertFalse($handler->handleError(E_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
@@ -236,7 +236,7 @@ public function testHandleError()
 
             $handler = ErrorHandler::register();
             $handler->setDefaultLogger($logger, E_USER_DEPRECATED);
-            $this->assertTrue($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
+            $this->assertTrue($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
@@ -320,7 +320,7 @@ public function testHandleDeprecation()
 
         $handler = new ErrorHandler();
         $handler->setDefaultLogger($logger);
-        @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, array());
+        @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, []);
     }
 
     /**
@@ -382,12 +382,12 @@ public function testErrorStacking()
                 ->expects($this->exactly(2))
                 ->method('log')
                 ->withConsecutive(
-                    array($this->equalTo(LogLevel::WARNING), $this->equalTo('Dummy log')),
-                    array($this->equalTo(LogLevel::DEBUG), $this->equalTo('User Warning: Silenced warning'))
+                    [$this->equalTo(LogLevel::WARNING), $this->equalTo('Dummy log')],
+                    [$this->equalTo(LogLevel::DEBUG), $this->equalTo('User Warning: Silenced warning')]
                 )
             ;
 
-            $handler->setDefaultLogger($logger, array(E_USER_WARNING => LogLevel::WARNING));
+            $handler->setDefaultLogger($logger, [E_USER_WARNING => LogLevel::WARNING]);
 
             ErrorHandler::stackErrors();
             @trigger_error('Silenced warning', E_USER_WARNING);
@@ -404,27 +404,27 @@ public function testBootstrappingLogger()
         $bootLogger = new BufferingLogger();
         $handler = new ErrorHandler($bootLogger);
 
-        $loggers = array(
-            E_DEPRECATED => array($bootLogger, LogLevel::INFO),
-            E_USER_DEPRECATED => array($bootLogger, LogLevel::INFO),
-            E_NOTICE => array($bootLogger, LogLevel::WARNING),
-            E_USER_NOTICE => array($bootLogger, LogLevel::WARNING),
-            E_STRICT => array($bootLogger, LogLevel::WARNING),
-            E_WARNING => array($bootLogger, LogLevel::WARNING),
-            E_USER_WARNING => array($bootLogger, LogLevel::WARNING),
-            E_COMPILE_WARNING => array($bootLogger, LogLevel::WARNING),
-            E_CORE_WARNING => array($bootLogger, LogLevel::WARNING),
-            E_USER_ERROR => array($bootLogger, LogLevel::CRITICAL),
-            E_RECOVERABLE_ERROR => array($bootLogger, LogLevel::CRITICAL),
-            E_COMPILE_ERROR => array($bootLogger, LogLevel::CRITICAL),
-            E_PARSE => array($bootLogger, LogLevel::CRITICAL),
-            E_ERROR => array($bootLogger, LogLevel::CRITICAL),
-            E_CORE_ERROR => array($bootLogger, LogLevel::CRITICAL),
-        );
-
-        $this->assertSame($loggers, $handler->setLoggers(array()));
-
-        $handler->handleError(E_DEPRECATED, 'Foo message', __FILE__, 123, array());
+        $loggers = [
+            E_DEPRECATED => [$bootLogger, LogLevel::INFO],
+            E_USER_DEPRECATED => [$bootLogger, LogLevel::INFO],
+            E_NOTICE => [$bootLogger, LogLevel::WARNING],
+            E_USER_NOTICE => [$bootLogger, LogLevel::WARNING],
+            E_STRICT => [$bootLogger, LogLevel::WARNING],
+            E_WARNING => [$bootLogger, LogLevel::WARNING],
+            E_USER_WARNING => [$bootLogger, LogLevel::WARNING],
+            E_COMPILE_WARNING => [$bootLogger, LogLevel::WARNING],
+            E_CORE_WARNING => [$bootLogger, LogLevel::WARNING],
+            E_USER_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            E_RECOVERABLE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            E_COMPILE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            E_PARSE => [$bootLogger, LogLevel::CRITICAL],
+            E_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            E_CORE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+        ];
+
+        $this->assertSame($loggers, $handler->setLoggers([]));
+
+        $handler->handleError(E_DEPRECATED, 'Foo message', __FILE__, 123, []);
 
         $logs = $bootLogger->cleanLogs();
 
@@ -440,14 +440,14 @@ public function testBootstrappingLogger()
         $this->assertSame(123, $exception->getLine());
         $this->assertSame(E_DEPRECATED, $exception->getSeverity());
 
-        $bootLogger->log(LogLevel::WARNING, 'Foo message', array('exception' => $exception));
+        $bootLogger->log(LogLevel::WARNING, 'Foo message', ['exception' => $exception]);
 
         $mockLogger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $mockLogger->expects($this->once())
             ->method('log')
-            ->with(LogLevel::WARNING, 'Foo message', array('exception' => $exception));
+            ->with(LogLevel::WARNING, 'Foo message', ['exception' => $exception]);
 
-        $handler->setLoggers(array(E_DEPRECATED => array($mockLogger, LogLevel::WARNING)));
+        $handler->setLoggers([E_DEPRECATED => [$mockLogger, LogLevel::WARNING]]);
     }
 
     /**
@@ -463,7 +463,7 @@ public function testSettingLoggerWhenExceptionIsBuffered()
         $mockLogger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $mockLogger->expects($this->once())
             ->method('log')
-            ->with(LogLevel::CRITICAL, 'Uncaught Exception: Foo message', array('exception' => $exception));
+            ->with(LogLevel::CRITICAL, 'Uncaught Exception: Foo message', ['exception' => $exception]);
 
         $handler->setExceptionHandler(function () use ($handler, $mockLogger) {
             $handler->setDefaultLogger($mockLogger);
@@ -480,12 +480,12 @@ public function testHandleFatalError()
         try {
             $handler = ErrorHandler::register();
 
-            $error = array(
+            $error = [
                 'type' => E_PARSE,
                 'message' => 'foo',
                 'file' => 'bar',
                 'line' => 123,
-            );
+            ];
 
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
@@ -553,16 +553,16 @@ public function testHandleFatalErrorOnHHVM()
 
             $handler->setDefaultLogger($logger, E_ERROR);
 
-            $error = array(
+            $error = [
                 'type' => E_ERROR + 0x1000000, // This error level is used by HHVM for fatal errors
                 'message' => 'foo',
                 'file' => 'bar',
                 'line' => 123,
-                'context' => array(123),
-                'backtrace' => array(456),
-            );
+                'context' => [123],
+                'backtrace' => [456],
+            ];
 
-            \call_user_func_array(array($handler, 'handleError'), $error);
+            \call_user_func_array([$handler, 'handleError'], $error);
             $handler->handleFatalError($error);
         } finally {
             restore_error_handler();
diff --git a/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php b/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
index ce9f355530e6..f755a78cfcb5 100644
--- a/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
+++ b/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
@@ -54,7 +54,7 @@ public function testStatusCode()
         $flattened = FlattenException::create(new ConflictHttpException());
         $this->assertEquals('409', $flattened->getStatusCode());
 
-        $flattened = FlattenException::create(new MethodNotAllowedHttpException(array('POST')));
+        $flattened = FlattenException::create(new MethodNotAllowedHttpException(['POST']));
         $this->assertEquals('405', $flattened->getStatusCode());
 
         $flattened = FlattenException::create(new AccessDeniedHttpException());
@@ -89,23 +89,23 @@ public function testStatusCode()
 
     public function testHeadersForHttpException()
     {
-        $flattened = FlattenException::create(new MethodNotAllowedHttpException(array('POST')));
-        $this->assertEquals(array('Allow' => 'POST'), $flattened->getHeaders());
+        $flattened = FlattenException::create(new MethodNotAllowedHttpException(['POST']));
+        $this->assertEquals(['Allow' => 'POST'], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new UnauthorizedHttpException('Basic realm="My Realm"'));
-        $this->assertEquals(array('WWW-Authenticate' => 'Basic realm="My Realm"'), $flattened->getHeaders());
+        $this->assertEquals(['WWW-Authenticate' => 'Basic realm="My Realm"'], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new ServiceUnavailableHttpException('Fri, 31 Dec 1999 23:59:59 GMT'));
-        $this->assertEquals(array('Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'), $flattened->getHeaders());
+        $this->assertEquals(['Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new ServiceUnavailableHttpException(120));
-        $this->assertEquals(array('Retry-After' => 120), $flattened->getHeaders());
+        $this->assertEquals(['Retry-After' => 120], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new TooManyRequestsHttpException('Fri, 31 Dec 1999 23:59:59 GMT'));
-        $this->assertEquals(array('Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'), $flattened->getHeaders());
+        $this->assertEquals(['Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new TooManyRequestsHttpException(120));
-        $this->assertEquals(array('Retry-After' => 120), $flattened->getHeaders());
+        $this->assertEquals(['Retry-After' => 120], $flattened->getHeaders());
     }
 
     /**
@@ -135,7 +135,7 @@ public function testPrevious(\Exception $exception)
 
         $this->assertSame($flattened2, $flattened->getPrevious());
 
-        $this->assertSame(array($flattened2), $flattened->getAllPrevious());
+        $this->assertSame([$flattened2], $flattened->getAllPrevious());
     }
 
     /**
@@ -176,25 +176,25 @@ public function testFile(\Exception $exception)
     public function testToArray(\Exception $exception)
     {
         $flattened = FlattenException::create($exception);
-        $flattened->setTrace(array(), 'foo.php', 123);
+        $flattened->setTrace([], 'foo.php', 123);
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 'message' => 'test',
                 'class' => 'Exception',
-                'trace' => array(array(
+                'trace' => [[
                     'namespace' => '', 'short_class' => '', 'class' => '', 'type' => '', 'function' => '', 'file' => 'foo.php', 'line' => 123,
-                    'args' => array(),
-                )),
-            ),
-        ), $flattened->toArray());
+                    'args' => [],
+                ]],
+            ],
+        ], $flattened->toArray());
     }
 
     public function flattenDataProvider()
     {
-        return array(
-            array(new \Exception('test', 123)),
-        );
+        return [
+            [new \Exception('test', 123)],
+        ];
     }
 
     public function testArguments()
@@ -204,15 +204,15 @@ public function testArguments()
 
         $incomplete = unserialize('O:14:"BogusTestClass":0:{}');
 
-        $exception = $this->createException(array(
-            (object) array('foo' => 1),
+        $exception = $this->createException([
+            (object) ['foo' => 1],
             new NotFoundHttpException(),
             $incomplete,
             $dh,
             $fh,
             function () {},
-            array(1, 2),
-            array('foo' => 123),
+            [1, 2],
+            ['foo' => 123],
             null,
             true,
             false,
@@ -222,7 +222,7 @@ function () {},
             '',
             INF,
             NAN,
-        ));
+        ]);
 
         $flattened = FlattenException::create($exception);
         $trace = $flattened->getTrace();
@@ -233,26 +233,26 @@ function () {},
         fclose($fh);
 
         $i = 0;
-        $this->assertSame(array('object', 'stdClass'), $array[$i++]);
-        $this->assertSame(array('object', 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException'), $array[$i++]);
-        $this->assertSame(array('incomplete-object', 'BogusTestClass'), $array[$i++]);
-        $this->assertSame(array('resource', \defined('HHVM_VERSION') ? 'Directory' : 'stream'), $array[$i++]);
-        $this->assertSame(array('resource', 'stream'), $array[$i++]);
+        $this->assertSame(['object', 'stdClass'], $array[$i++]);
+        $this->assertSame(['object', 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException'], $array[$i++]);
+        $this->assertSame(['incomplete-object', 'BogusTestClass'], $array[$i++]);
+        $this->assertSame(['resource', \defined('HHVM_VERSION') ? 'Directory' : 'stream'], $array[$i++]);
+        $this->assertSame(['resource', 'stream'], $array[$i++]);
 
         $args = $array[$i++];
         $this->assertSame($args[0], 'object');
         $this->assertTrue('Closure' === $args[1] || is_subclass_of($args[1], '\Closure'), 'Expect object class name to be Closure or a subclass of Closure.');
 
-        $this->assertSame(array('array', array(array('integer', 1), array('integer', 2))), $array[$i++]);
-        $this->assertSame(array('array', array('foo' => array('integer', 123))), $array[$i++]);
-        $this->assertSame(array('null', null), $array[$i++]);
-        $this->assertSame(array('boolean', true), $array[$i++]);
-        $this->assertSame(array('boolean', false), $array[$i++]);
-        $this->assertSame(array('integer', 0), $array[$i++]);
-        $this->assertSame(array('float', 0.0), $array[$i++]);
-        $this->assertSame(array('string', '0'), $array[$i++]);
-        $this->assertSame(array('string', ''), $array[$i++]);
-        $this->assertSame(array('float', INF), $array[$i++]);
+        $this->assertSame(['array', [['integer', 1], ['integer', 2]]], $array[$i++]);
+        $this->assertSame(['array', ['foo' => ['integer', 123]]], $array[$i++]);
+        $this->assertSame(['null', null], $array[$i++]);
+        $this->assertSame(['boolean', true], $array[$i++]);
+        $this->assertSame(['boolean', false], $array[$i++]);
+        $this->assertSame(['integer', 0], $array[$i++]);
+        $this->assertSame(['float', 0.0], $array[$i++]);
+        $this->assertSame(['string', '0'], $array[$i++]);
+        $this->assertSame(['string', ''], $array[$i++]);
+        $this->assertSame(['float', INF], $array[$i++]);
 
         // assertEquals() does not like NAN values.
         $this->assertEquals($array[$i][0], 'float');
@@ -262,7 +262,7 @@ function () {},
     public function testRecursionInArguments()
     {
         $a = null;
-        $a = array('foo', array(2, &$a));
+        $a = ['foo', [2, &$a]];
         $exception = $this->createException($a);
 
         $flattened = FlattenException::create($exception);
@@ -272,7 +272,7 @@ public function testRecursionInArguments()
 
     public function testTooBigArray()
     {
-        $a = array();
+        $a = [];
         for ($i = 0; $i < 20; ++$i) {
             for ($j = 0; $j < 50; ++$j) {
                 for ($k = 0; $k < 10; ++$k) {
@@ -287,7 +287,7 @@ public function testTooBigArray()
         $flattened = FlattenException::create($exception);
         $trace = $flattened->getTrace();
 
-        $this->assertSame($trace[1]['args'][0], array('array', array('array', '*SKIPPED over 10000 entries*')));
+        $this->assertSame($trace[1]['args'][0], ['array', ['array', '*SKIPPED over 10000 entries*']]);
 
         $serializeTrace = serialize($trace);
 
diff --git a/src/Symfony/Component/Debug/Tests/ExceptionHandlerTest.php b/src/Symfony/Component/Debug/Tests/ExceptionHandlerTest.php
index 6ff6a74f4f99..e166136cbbed 100644
--- a/src/Symfony/Component/Debug/Tests/ExceptionHandlerTest.php
+++ b/src/Symfony/Component/Debug/Tests/ExceptionHandlerTest.php
@@ -62,10 +62,10 @@ public function testStatusCode()
 
         $this->assertContains('Sorry, the page you are looking for could not be found.', $response);
 
-        $expectedHeaders = array(
-            array('HTTP/1.0 404', true, null),
-            array('Content-Type: text/html; charset=iso8859-1', true, null),
-        );
+        $expectedHeaders = [
+            ['HTTP/1.0 404', true, null],
+            ['Content-Type: text/html; charset=iso8859-1', true, null],
+        ];
 
         $this->assertSame($expectedHeaders, testHeader());
     }
@@ -75,14 +75,14 @@ public function testHeaders()
         $handler = new ExceptionHandler(false, 'iso8859-1');
 
         ob_start();
-        $handler->sendPhpResponse(new MethodNotAllowedHttpException(array('POST')));
+        $handler->sendPhpResponse(new MethodNotAllowedHttpException(['POST']));
         $response = ob_get_clean();
 
-        $expectedHeaders = array(
-            array('HTTP/1.0 405', true, null),
-            array('Allow: POST', false, null),
-            array('Content-Type: text/html; charset=iso8859-1', true, null),
-        );
+        $expectedHeaders = [
+            ['HTTP/1.0 405', true, null],
+            ['Allow: POST', false, null],
+            ['Content-Type: text/html; charset=iso8859-1', true, null],
+        ];
 
         $this->assertSame($expectedHeaders, testHeader());
     }
@@ -101,7 +101,7 @@ public function testHandle()
     {
         $exception = new \Exception('foo');
 
-        $handler = $this->getMockBuilder('Symfony\Component\Debug\ExceptionHandler')->setMethods(array('sendPhpResponse'))->getMock();
+        $handler = $this->getMockBuilder('Symfony\Component\Debug\ExceptionHandler')->setMethods(['sendPhpResponse'])->getMock();
         $handler
             ->expects($this->exactly(2))
             ->method('sendPhpResponse');
@@ -119,7 +119,7 @@ public function testHandleOutOfMemoryException()
     {
         $exception = new OutOfMemoryException('foo', 0, E_ERROR, __FILE__, __LINE__);
 
-        $handler = $this->getMockBuilder('Symfony\Component\Debug\ExceptionHandler')->setMethods(array('sendPhpResponse'))->getMock();
+        $handler = $this->getMockBuilder('Symfony\Component\Debug\ExceptionHandler')->setMethods(['sendPhpResponse'])->getMock();
         $handler
             ->expects($this->once())
             ->method('sendPhpResponse');
diff --git a/src/Symfony/Component/Debug/Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php b/src/Symfony/Component/Debug/Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php
index 5cdac2f12afc..8e615ac640be 100644
--- a/src/Symfony/Component/Debug/Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php
+++ b/src/Symfony/Component/Debug/Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php
@@ -72,85 +72,85 @@ public function provideClassNotFoundData()
         $autoloader = new ComposerClassLoader();
         $autoloader->add('Symfony\Component\Debug\Exception\\', realpath(__DIR__.'/../../Exception'));
 
-        $debugClassLoader = new DebugClassLoader(array($autoloader, 'loadClass'));
+        $debugClassLoader = new DebugClassLoader([$autoloader, 'loadClass']);
 
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Class \'WhizBangFactory\' not found',
-                ),
+                ],
                 "Attempted to load class \"WhizBangFactory\" from the global namespace.\nDid you forget a \"use\" statement?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Class \'Foo\\Bar\\WhizBangFactory\' not found',
-                ),
+                ],
                 "Attempted to load class \"WhizBangFactory\" from namespace \"Foo\\Bar\".\nDid you forget a \"use\" statement for another namespace?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Class \'UndefinedFunctionException\' not found',
-                ),
+                ],
                 "Attempted to load class \"UndefinedFunctionException\" from the global namespace.\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Class \'PEARClass\' not found',
-                ),
+                ],
                 "Attempted to load class \"PEARClass\" from the global namespace.\nDid you forget a \"use\" statement for \"Symfony_Component_Debug_Tests_Fixtures_PEARClass\"?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
-                ),
+                ],
                 "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
-                ),
+                ],
                 "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
-                array($autoloader, 'loadClass'),
-            ),
-            array(
-                array(
+                [$autoloader, 'loadClass'],
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
-                ),
+                ],
                 "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
-                array($debugClassLoader, 'loadClass'),
-            ),
-            array(
-                array(
+                [$debugClassLoader, 'loadClass'],
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
-                ),
+                ],
                 "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\\Bar\".\nDid you forget a \"use\" statement for another namespace?",
                 function ($className) { /* do nothing here */ },
-            ),
-        );
+            ],
+        ];
     }
 
     public function testCannotRedeclareClass()
@@ -161,12 +161,12 @@ public function testCannotRedeclareClass()
 
         require_once __DIR__.'/../FIXTURES2/REQUIREDTWICE.PHP';
 
-        $error = array(
+        $error = [
             'type' => 1,
             'line' => 12,
             'file' => 'foo.php',
             'message' => 'Class \'Foo\\Bar\\RequiredTwice\' not found',
-        );
+        ];
 
         $handler = new ClassNotFoundFatalErrorHandler();
         $exception = $handler->handleError($error, new FatalErrorException('', 0, $error['type'], $error['file'], $error['line']));
diff --git a/src/Symfony/Component/Debug/Tests/FatalErrorHandler/UndefinedFunctionFatalErrorHandlerTest.php b/src/Symfony/Component/Debug/Tests/FatalErrorHandler/UndefinedFunctionFatalErrorHandlerTest.php
index 1dc2120045c2..2de44a25ef15 100644
--- a/src/Symfony/Component/Debug/Tests/FatalErrorHandler/UndefinedFunctionFatalErrorHandlerTest.php
+++ b/src/Symfony/Component/Debug/Tests/FatalErrorHandler/UndefinedFunctionFatalErrorHandlerTest.php
@@ -35,44 +35,44 @@ public function testUndefinedFunction($error, $translatedMessage)
 
     public function provideUndefinedFunctionData()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Call to undefined function test_namespaced_function()',
-                ),
+                ],
                 "Attempted to call function \"test_namespaced_function\" from the global namespace.\nDid you mean to call \"\\symfony\\component\\debug\\tests\\fatalerrorhandler\\test_namespaced_function\"?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Call to undefined function Foo\\Bar\\Baz\\test_namespaced_function()',
-                ),
+                ],
                 "Attempted to call function \"test_namespaced_function\" from namespace \"Foo\\Bar\\Baz\".\nDid you mean to call \"\\symfony\\component\\debug\\tests\\fatalerrorhandler\\test_namespaced_function\"?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Call to undefined function foo()',
-                ),
+                ],
                 'Attempted to call function "foo" from the global namespace.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Call to undefined function Foo\\Bar\\Baz\\foo()',
-                ),
+                ],
                 'Attempted to call function "foo" from namespace "Foo\Bar\Baz".',
-            ),
-        );
+            ],
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/Debug/Tests/FatalErrorHandler/UndefinedMethodFatalErrorHandlerTest.php b/src/Symfony/Component/Debug/Tests/FatalErrorHandler/UndefinedMethodFatalErrorHandlerTest.php
index a2647f57f201..268a841351ec 100644
--- a/src/Symfony/Component/Debug/Tests/FatalErrorHandler/UndefinedMethodFatalErrorHandlerTest.php
+++ b/src/Symfony/Component/Debug/Tests/FatalErrorHandler/UndefinedMethodFatalErrorHandlerTest.php
@@ -34,43 +34,43 @@ public function testUndefinedMethod($error, $translatedMessage)
 
     public function provideUndefinedMethodData()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Call to undefined method SplObjectStorage::what()',
-                ),
+                ],
                 'Attempted to call an undefined method named "what" of class "SplObjectStorage".',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Call to undefined method SplObjectStorage::walid()',
-                ),
+                ],
                 "Attempted to call an undefined method named \"walid\" of class \"SplObjectStorage\".\nDid you mean to call \"valid\"?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'line' => 12,
                     'file' => 'foo.php',
                     'message' => 'Call to undefined method SplObjectStorage::offsetFet()',
-                ),
+                ],
                 "Attempted to call an undefined method named \"offsetFet\" of class \"SplObjectStorage\".\nDid you mean to call e.g. \"offsetGet\", \"offsetSet\" or \"offsetUnset\"?",
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'type' => 1,
                     'message' => 'Call to undefined method class@anonymous::test()',
                     'file' => '/home/possum/work/symfony/test.php',
                     'line' => 11,
-                ),
+                ],
                 'Attempted to call an undefined method named "test" of class "class@anonymous".',
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Debug/Tests/Fixtures/ToStringThrower.php b/src/Symfony/Component/Debug/Tests/Fixtures/ToStringThrower.php
index 40a5fb7f8c85..24ac8926d28f 100644
--- a/src/Symfony/Component/Debug/Tests/Fixtures/ToStringThrower.php
+++ b/src/Symfony/Component/Debug/Tests/Fixtures/ToStringThrower.php
@@ -18,7 +18,7 @@ public function __toString()
         } catch (\Exception $e) {
             // Using user_error() here is on purpose so we do not forget
             // that this alias also should work alongside with trigger_error().
-            return user_error($e, E_USER_ERROR);
+            return trigger_error($e, E_USER_ERROR);
         }
     }
 }
diff --git a/src/Symfony/Component/Debug/Tests/HeaderMock.php b/src/Symfony/Component/Debug/Tests/HeaderMock.php
index 3d8d84c5a4c4..d7564db4854b 100644
--- a/src/Symfony/Component/Debug/Tests/HeaderMock.php
+++ b/src/Symfony/Component/Debug/Tests/HeaderMock.php
@@ -25,11 +25,11 @@ function header($str, $replace = true, $status = null)
 
 function testHeader()
 {
-    static $headers = array();
+    static $headers = [];
 
     if (!$h = \func_get_args()) {
         $h = $headers;
-        $headers = array();
+        $headers = [];
 
         return $h;
     }
diff --git a/src/Symfony/Component/Debug/Tests/phpt/exception_rethrown.phpt b/src/Symfony/Component/Debug/Tests/phpt/exception_rethrown.phpt
index 3f4559543064..b743d93ad7c8 100644
--- a/src/Symfony/Component/Debug/Tests/phpt/exception_rethrown.phpt
+++ b/src/Symfony/Component/Debug/Tests/phpt/exception_rethrown.phpt
@@ -14,7 +14,7 @@ require $vendor.'/vendor/autoload.php';
 if (true) {
     class TestLogger extends \Psr\Log\AbstractLogger
     {
-        public function log($level, $message, array $context = array())
+        public function log($level, $message, array $context = [])
         {
             echo $message, "\n";
         }
diff --git a/src/Symfony/Component/Debug/Tests/phpt/fatal_with_nested_handlers.phpt b/src/Symfony/Component/Debug/Tests/phpt/fatal_with_nested_handlers.phpt
index 2b74e5c6857f..b3f0e0eb0995 100644
--- a/src/Symfony/Component/Debug/Tests/phpt/fatal_with_nested_handlers.phpt
+++ b/src/Symfony/Component/Debug/Tests/phpt/fatal_with_nested_handlers.phpt
@@ -17,9 +17,9 @@ ini_set('display_errors', 0);
 $eHandler = set_error_handler('var_dump');
 $xHandler = set_exception_handler('var_dump');
 
-var_dump(array(
+var_dump([
     $eHandler[0] === $xHandler[0] ? 'Error and exception handlers do match' : 'Error and exception handlers are different',
-));
+]);
 
 $eHandler[0]->setExceptionHandler('print_r');
 
diff --git a/src/Symfony/Component/DependencyInjection/Argument/BoundArgument.php b/src/Symfony/Component/DependencyInjection/Argument/BoundArgument.php
index f72f2110744c..a20698440c3c 100644
--- a/src/Symfony/Component/DependencyInjection/Argument/BoundArgument.php
+++ b/src/Symfony/Component/DependencyInjection/Argument/BoundArgument.php
@@ -33,7 +33,7 @@ public function __construct($value)
      */
     public function getValues()
     {
-        return array($this->value, $this->identifier, $this->used);
+        return [$this->value, $this->identifier, $this->used];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Argument/ServiceClosureArgument.php b/src/Symfony/Component/DependencyInjection/Argument/ServiceClosureArgument.php
index 2fec5d26d0fc..6331affa4838 100644
--- a/src/Symfony/Component/DependencyInjection/Argument/ServiceClosureArgument.php
+++ b/src/Symfony/Component/DependencyInjection/Argument/ServiceClosureArgument.php
@@ -25,7 +25,7 @@ class ServiceClosureArgument implements ArgumentInterface
 
     public function __construct(Reference $reference)
     {
-        $this->values = array($reference);
+        $this->values = [$reference];
     }
 
     /**
@@ -41,7 +41,7 @@ public function getValues()
      */
     public function setValues(array $values)
     {
-        if (array(0) !== array_keys($values) || !($values[0] instanceof Reference || null === $values[0])) {
+        if ([0] !== array_keys($values) || !($values[0] instanceof Reference || null === $values[0])) {
             throw new InvalidArgumentException('A ServiceClosureArgument must hold one and only one Reference.');
         }
 
diff --git a/src/Symfony/Component/DependencyInjection/Argument/TaggedIteratorArgument.php b/src/Symfony/Component/DependencyInjection/Argument/TaggedIteratorArgument.php
index 19e0d2b97152..f00e533919f9 100644
--- a/src/Symfony/Component/DependencyInjection/Argument/TaggedIteratorArgument.php
+++ b/src/Symfony/Component/DependencyInjection/Argument/TaggedIteratorArgument.php
@@ -25,7 +25,7 @@ class TaggedIteratorArgument extends IteratorArgument
      */
     public function __construct($tag)
     {
-        parent::__construct(array());
+        parent::__construct([]);
 
         $this->tag = (string) $tag;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php b/src/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php
index 7c22d3c08843..fc4047f902e1 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php
@@ -87,7 +87,7 @@ protected function processValue($value, $isRoot = false)
             return $value;
         }
         if ($value instanceof Expression) {
-            $this->getExpressionLanguage()->compile((string) $value, array('this' => 'container'));
+            $this->getExpressionLanguage()->compile((string) $value, ['this' => 'container']);
 
             return $value;
         }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php b/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
index 4aabb0b29aa7..b411b30f262b 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
@@ -28,13 +28,13 @@
  */
 class AutowirePass extends AbstractRecursivePass
 {
-    private $definedTypes = array();
+    private $definedTypes = [];
     private $types;
     private $ambiguousServiceTypes;
-    private $autowired = array();
+    private $autowired = [];
     private $lastFailure;
     private $throwOnAutowiringException;
-    private $autowiringExceptions = array();
+    private $autowiringExceptions = [];
     private $strictMode;
 
     /**
@@ -63,16 +63,16 @@ public function getAutowiringExceptions()
     public function process(ContainerBuilder $container)
     {
         // clear out any possibly stored exceptions from before
-        $this->autowiringExceptions = array();
+        $this->autowiringExceptions = [];
         $this->strictMode = $container->hasParameter('container.autowiring.strict_mode') && $container->getParameter('container.autowiring.strict_mode');
 
         try {
             parent::process($container);
         } finally {
-            $this->definedTypes = array();
+            $this->definedTypes = [];
             $this->types = null;
             $this->ambiguousServiceTypes = null;
-            $this->autowired = array();
+            $this->autowired = [];
         }
     }
 
@@ -89,7 +89,7 @@ public static function createResourceForClass(\ReflectionClass $reflectionClass)
     {
         @trigger_error('The '.__METHOD__.'() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use ContainerBuilder::getReflectionClass() instead.', E_USER_DEPRECATED);
 
-        $metadata = array();
+        $metadata = [];
 
         foreach ($reflectionClass->getMethods(\ReflectionMethod::IS_PUBLIC) as $reflectionMethod) {
             if (!$reflectionMethod->isStatic()) {
@@ -147,7 +147,7 @@ private function doProcessValue($value, $isRoot = false)
         }
 
         if ($constructor) {
-            array_unshift($methodCalls, array($constructor, $value->getArguments()));
+            array_unshift($methodCalls, [$constructor, $value->getArguments()]);
         }
 
         $methodCalls = $this->autowireCalls($reflectionClass, $methodCalls);
@@ -327,9 +327,9 @@ private function getAutowiredReference(TypedReference $reference, $deprecationMe
      */
     private function populateAvailableTypes($onlyAutowiringTypes = false)
     {
-        $this->types = array();
+        $this->types = [];
         if (!$onlyAutowiringTypes) {
-            $this->ambiguousServiceTypes = array();
+            $this->ambiguousServiceTypes = [];
         }
 
         foreach ($this->container->getDefinitions() as $id => $definition) {
@@ -401,7 +401,7 @@ private function set($type, $id)
 
         // keep an array of all services matching this type
         if (!isset($this->ambiguousServiceTypes[$type])) {
-            $this->ambiguousServiceTypes[$type] = array($this->types[$type]);
+            $this->ambiguousServiceTypes[$type] = [$this->types[$type]];
             unset($this->types[$type]);
         }
         $this->ambiguousServiceTypes[$type][] = $id;
@@ -521,7 +521,7 @@ private function createTypeAlternatives(TypedReference $reference)
      */
     private static function getResourceMetadataForMethod(\ReflectionMethod $method)
     {
-        $methodArgumentsMetadata = array();
+        $methodArgumentsMetadata = [];
         foreach ($method->getParameters() as $parameter) {
             try {
                 $class = $parameter->getClass();
@@ -531,11 +531,11 @@ private static function getResourceMetadataForMethod(\ReflectionMethod $method)
             }
 
             $isVariadic = method_exists($parameter, 'isVariadic') && $parameter->isVariadic();
-            $methodArgumentsMetadata[] = array(
+            $methodArgumentsMetadata[] = [
                 'class' => $class,
                 'isOptional' => $parameter->isOptional(),
                 'defaultValue' => ($parameter->isOptional() && !$isVariadic) ? $parameter->getDefaultValue() : null,
-            );
+            ];
         }
 
         return $methodArgumentsMetadata;
@@ -543,7 +543,7 @@ private static function getResourceMetadataForMethod(\ReflectionMethod $method)
 
     private function getAliasesSuggestionForType($type, $extraContext = null)
     {
-        $aliases = array();
+        $aliases = [];
         foreach (class_parents($type) + class_implements($type) as $parent) {
             if ($this->container->has($parent) && !$this->container->findDefinition($parent)->isAbstract()) {
                 $aliases[] = $parent;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AutowireRequiredMethodsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/AutowireRequiredMethodsPass.php
index 6c744f88f6a9..efb9df7b9431 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AutowireRequiredMethodsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AutowireRequiredMethodsPass.php
@@ -34,7 +34,7 @@ protected function processValue($value, $isRoot = false)
             return $value;
         }
 
-        $alreadyCalledMethods = array();
+        $alreadyCalledMethods = [];
 
         foreach ($value->getMethodCalls() as list($method)) {
             $alreadyCalledMethods[strtolower($method)] = true;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/CheckCircularReferencesPass.php b/src/Symfony/Component/DependencyInjection/Compiler/CheckCircularReferencesPass.php
index ac7866b2bab8..55d911c4f3e6 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/CheckCircularReferencesPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/CheckCircularReferencesPass.php
@@ -36,9 +36,9 @@ public function process(ContainerBuilder $container)
     {
         $graph = $container->getCompiler()->getServiceReferenceGraph();
 
-        $this->checkedNodes = array();
+        $this->checkedNodes = [];
         foreach ($graph->getNodes() as $id => $node) {
-            $this->currentPath = array($id);
+            $this->currentPath = [$id];
 
             $this->checkOutEdges($node->getOutEdges());
         }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/CheckDefinitionValidityPass.php b/src/Symfony/Component/DependencyInjection/Compiler/CheckDefinitionValidityPass.php
index a1967802f6a3..0e9005415a30 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/CheckDefinitionValidityPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/CheckDefinitionValidityPass.php
@@ -83,7 +83,7 @@ public function process(ContainerBuilder $container)
             if ($definition->isPublic() && !$definition->isPrivate()) {
                 $resolvedId = $container->resolveEnvPlaceholders($id, null, $usedEnvs);
                 if (null !== $usedEnvs) {
-                    throw new EnvParameterException(array($resolvedId), null, 'A service name ("%s") cannot contain dynamic values.');
+                    throw new EnvParameterException([$resolvedId], null, 'A service name ("%s") cannot contain dynamic values.');
                 }
             }
         }
@@ -92,7 +92,7 @@ public function process(ContainerBuilder $container)
             if ($alias->isPublic() && !$alias->isPrivate()) {
                 $resolvedId = $container->resolveEnvPlaceholders($id, null, $usedEnvs);
                 if (null !== $usedEnvs) {
-                    throw new EnvParameterException(array($resolvedId), null, 'An alias name ("%s") cannot contain dynamic values.');
+                    throw new EnvParameterException([$resolvedId], null, 'An alias name ("%s") cannot contain dynamic values.');
                 }
             }
         }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php b/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
index d5c01a640fce..a6ae94d8cacc 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
@@ -22,7 +22,7 @@
 class Compiler
 {
     private $passConfig;
-    private $log = array();
+    private $log = [];
     private $loggingFormatter;
     private $serviceReferenceGraph;
 
@@ -141,7 +141,7 @@ public function compile(ContainerBuilder $container)
                 $pass->process($container);
             }
         } catch (\Exception $e) {
-            $usedEnvs = array();
+            $usedEnvs = [];
             $prev = $e;
 
             do {
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php b/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php
index 263bd4cf1fba..bbd857e154e5 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php
@@ -32,9 +32,9 @@ public function process(ContainerBuilder $container)
             if (!$decorated = $definition->getDecoratedService()) {
                 continue;
             }
-            $definitions->insert(array($id, $definition), array($decorated[2], --$order));
+            $definitions->insert([$id, $definition], [$decorated[2], --$order]);
         }
-        $decoratingDefinitions = array();
+        $decoratingDefinitions = [];
 
         foreach ($definitions as list($id, $definition)) {
             list($inner, $renamedId) = $definition->getDecoratedService();
@@ -68,9 +68,9 @@ public function process(ContainerBuilder $container)
                 if ($types = array_merge($autowiringTypes, $definition->getAutowiringTypes(false))) {
                     $definition->setAutowiringTypes($types);
                 }
-                $decoratingDefinition->setTags(array());
+                $decoratingDefinition->setTags([]);
                 if ($autowiringTypes) {
-                    $decoratingDefinition->setAutowiringTypes(array());
+                    $decoratingDefinition->setAutowiringTypes([]);
                 }
                 $decoratingDefinitions[$inner] = $definition;
             }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/FactoryReturnTypePass.php b/src/Symfony/Component/DependencyInjection/Compiler/FactoryReturnTypePass.php
index 1279fcaa7063..d688fb59fd1f 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/FactoryReturnTypePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/FactoryReturnTypePass.php
@@ -41,14 +41,14 @@ public function process(ContainerBuilder $container)
         if (!method_exists(\ReflectionMethod::class, 'getReturnType')) {
             return;
         }
-        $resolveClassPassChanges = null !== $this->resolveClassPass ? $this->resolveClassPass->getChanges() : array();
+        $resolveClassPassChanges = null !== $this->resolveClassPass ? $this->resolveClassPass->getChanges() : [];
 
         foreach ($container->getDefinitions() as $id => $definition) {
             $this->updateDefinition($container, $id, $definition, $resolveClassPassChanges);
         }
     }
 
-    private function updateDefinition(ContainerBuilder $container, $id, Definition $definition, array $resolveClassPassChanges, array $previous = array())
+    private function updateDefinition(ContainerBuilder $container, $id, Definition $definition, array $resolveClassPassChanges, array $previous = [])
     {
         // circular reference
         if (isset($previous[$id])) {
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
index a229022ed8a0..ee3d7e526253 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
@@ -23,8 +23,8 @@
  */
 class InlineServiceDefinitionsPass extends AbstractRecursivePass implements RepeatablePassInterface
 {
-    private $cloningIds = array();
-    private $inlinedServiceIds = array();
+    private $cloningIds = [];
+    private $inlinedServiceIds = [];
 
     /**
      * {@inheritdoc}
@@ -126,7 +126,7 @@ private function isInlineableDefinition($id, Definition $definition, ServiceRefe
             return false;
         }
 
-        $ids = array();
+        $ids = [];
         $isReferencedByConstructor = false;
         foreach ($graph->getNode($id)->getInEdges() as $edge) {
             $isReferencedByConstructor = $isReferencedByConstructor || $edge->isReferencedByConstructor();
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php b/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php
index 71cfa2d51dc1..63f8013c313f 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php
@@ -110,7 +110,7 @@ public function freezeAfterProcessing(Extension $extension, ContainerBuilder $co
             // Extension::processConfiguration() wasn't called, we cannot know how configs were merged
             return;
         }
-        $this->processedEnvPlaceholders = array();
+        $this->processedEnvPlaceholders = [];
 
         // serialize config and container to catch env vars nested in object graphs
         $config = serialize($config).serialize($container->getDefinitions()).serialize($container->getAliases()).serialize($container->getParameterBag()->all());
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
index d547c3e95e12..77f4e953157c 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
@@ -29,9 +29,9 @@ class PassConfig
     const TYPE_REMOVE = 'removing';
 
     private $mergePass;
-    private $afterRemovingPasses = array();
-    private $beforeOptimizationPasses = array();
-    private $beforeRemovingPasses = array();
+    private $afterRemovingPasses = [];
+    private $beforeOptimizationPasses = [];
+    private $beforeRemovingPasses = [];
     private $optimizationPasses;
     private $removingPasses;
 
@@ -39,16 +39,16 @@ public function __construct()
     {
         $this->mergePass = new MergeExtensionConfigurationPass();
 
-        $this->beforeOptimizationPasses = array(
-            100 => array(
+        $this->beforeOptimizationPasses = [
+            100 => [
                 $resolveClassPass = new ResolveClassPass(),
                 new ResolveInstanceofConditionalsPass(),
                 new RegisterEnvVarProcessorsPass(),
-            ),
-            -1000 => array(new ExtensionCompilerPass()),
-        );
+            ],
+            -1000 => [new ExtensionCompilerPass()],
+        ];
 
-        $this->optimizationPasses = array(array(
+        $this->optimizationPasses = [[
             new ResolveChildDefinitionsPass(),
             new ServiceLocatorTagPass(),
             new RegisterServiceSubscribersPass(),
@@ -69,28 +69,28 @@ public function __construct()
             new CheckCircularReferencesPass(),
             new CheckReferenceValidityPass(),
             new CheckArgumentsValidityPass(false),
-        ));
+        ]];
 
-        $this->beforeRemovingPasses = array(
-            -100 => array(
+        $this->beforeRemovingPasses = [
+            -100 => [
                 new ResolvePrivatesPass(),
-            ),
-        );
+            ],
+        ];
 
-        $this->removingPasses = array(array(
+        $this->removingPasses = [[
             new RemovePrivateAliasesPass(),
             new ReplaceAliasByActualDefinitionPass(),
             new RemoveAbstractDefinitionsPass(),
-            new RepeatedPass(array(
+            new RepeatedPass([
                 new AnalyzeServiceReferencesPass(),
                 new InlineServiceDefinitionsPass(),
                 new AnalyzeServiceReferencesPass(),
                 new RemoveUnusedDefinitionsPass(),
-            )),
+            ]),
             new DefinitionErrorExceptionPass(),
             new CheckExceptionOnInvalidReferenceBehaviorPass(),
             new ResolveHotPathPass(),
-        ));
+        ]];
     }
 
     /**
@@ -101,7 +101,7 @@ public function __construct()
     public function getPasses()
     {
         return array_merge(
-            array($this->mergePass),
+            [$this->mergePass],
             $this->getBeforeOptimizationPasses(),
             $this->getOptimizationPasses(),
             $this->getBeforeRemovingPasses(),
@@ -142,7 +142,7 @@ public function addPass(CompilerPassInterface $pass, $type = self::TYPE_BEFORE_O
         $passes = &$this->$property;
 
         if (!isset($passes[$priority])) {
-            $passes[$priority] = array();
+            $passes[$priority] = [];
         }
         $passes[$priority][] = $pass;
     }
@@ -219,7 +219,7 @@ public function setMergePass(CompilerPassInterface $pass)
      */
     public function setAfterRemovingPasses(array $passes)
     {
-        $this->afterRemovingPasses = array($passes);
+        $this->afterRemovingPasses = [$passes];
     }
 
     /**
@@ -229,7 +229,7 @@ public function setAfterRemovingPasses(array $passes)
      */
     public function setBeforeOptimizationPasses(array $passes)
     {
-        $this->beforeOptimizationPasses = array($passes);
+        $this->beforeOptimizationPasses = [$passes];
     }
 
     /**
@@ -239,7 +239,7 @@ public function setBeforeOptimizationPasses(array $passes)
      */
     public function setBeforeRemovingPasses(array $passes)
     {
-        $this->beforeRemovingPasses = array($passes);
+        $this->beforeRemovingPasses = [$passes];
     }
 
     /**
@@ -249,7 +249,7 @@ public function setBeforeRemovingPasses(array $passes)
      */
     public function setOptimizationPasses(array $passes)
     {
-        $this->optimizationPasses = array($passes);
+        $this->optimizationPasses = [$passes];
     }
 
     /**
@@ -259,7 +259,7 @@ public function setOptimizationPasses(array $passes)
      */
     public function setRemovingPasses(array $passes)
     {
-        $this->removingPasses = array($passes);
+        $this->removingPasses = [$passes];
     }
 
     /**
@@ -272,7 +272,7 @@ public function setRemovingPasses(array $passes)
     private function sortPasses(array $passes)
     {
         if (0 === \count($passes)) {
-            return array();
+            return [];
         }
 
         krsort($passes);
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/PriorityTaggedServiceTrait.php b/src/Symfony/Component/DependencyInjection/Compiler/PriorityTaggedServiceTrait.php
index ed9b0b7f1e94..daff3495acdb 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/PriorityTaggedServiceTrait.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/PriorityTaggedServiceTrait.php
@@ -38,7 +38,7 @@ trait PriorityTaggedServiceTrait
      */
     private function findAndSortTaggedServices($tagName, ContainerBuilder $container)
     {
-        $services = array();
+        $services = [];
 
         foreach ($container->findTaggedServiceIds($tagName, true) as $serviceId => $attributes) {
             $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/RegisterEnvVarProcessorsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/RegisterEnvVarProcessorsPass.php
index e206b0ced887..b4d0d0550613 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/RegisterEnvVarProcessorsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/RegisterEnvVarProcessorsPass.php
@@ -27,13 +27,13 @@
  */
 class RegisterEnvVarProcessorsPass implements CompilerPassInterface
 {
-    private static $allowedTypes = array('array', 'bool', 'float', 'int', 'string');
+    private static $allowedTypes = ['array', 'bool', 'float', 'int', 'string'];
 
     public function process(ContainerBuilder $container)
     {
         $bag = $container->getParameterBag();
-        $types = array();
-        $processors = array();
+        $types = [];
+        $processors = [];
         foreach ($container->findTaggedServiceIds('container.env_var_processor') as $id => $tags) {
             if (!$r = $container->getReflectionClass($class = $container->getDefinition($id)->getClass())) {
                 throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
@@ -58,7 +58,7 @@ public function process(ContainerBuilder $container)
         if ($processors) {
             $container->register('container.env_var_processors_locator', ServiceLocator::class)
                 ->setPublic(true)
-                ->setArguments(array($processors))
+                ->setArguments([$processors])
             ;
         }
     }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/RegisterServiceSubscribersPass.php b/src/Symfony/Component/DependencyInjection/Compiler/RegisterServiceSubscribersPass.php
index 0a7dcd7e9dec..8eac9f0061c5 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/RegisterServiceSubscribersPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/RegisterServiceSubscribersPass.php
@@ -31,7 +31,7 @@ protected function processValue($value, $isRoot = false)
             return parent::processValue($value, $isRoot);
         }
 
-        $serviceMap = array();
+        $serviceMap = [];
         $autowire = $value->isAutowired();
 
         foreach ($value->getTag('container.service_subscriber') as $attributes) {
@@ -40,7 +40,7 @@ protected function processValue($value, $isRoot = false)
                 continue;
             }
             ksort($attributes);
-            if (array() !== array_diff(array_keys($attributes), array('id', 'key'))) {
+            if ([] !== array_diff(array_keys($attributes), ['id', 'key'])) {
                 throw new InvalidArgumentException(sprintf('The "container.service_subscriber" tag accepts only the "key" and "id" attributes, "%s" given for service "%s".', implode('", "', array_keys($attributes)), $this->currentId));
             }
             if (!array_key_exists('id', $attributes)) {
@@ -64,7 +64,7 @@ protected function processValue($value, $isRoot = false)
         }
         $class = $r->name;
 
-        $subscriberMap = array();
+        $subscriberMap = [];
         $declaringClass = (new \ReflectionMethod($class, 'getSubscribedServices'))->class;
 
         foreach ($class::getSubscribedServices() as $key => $type) {
@@ -94,7 +94,7 @@ protected function processValue($value, $isRoot = false)
             throw new InvalidArgumentException(sprintf('Service %s not exist in the map returned by "%s::getSubscribedServices()" for service "%s".', $message, $class, $this->currentId));
         }
 
-        $value->addTag('container.service_subscriber.locator', array('id' => (string) ServiceLocatorTagPass::register($this->container, $subscriberMap, $this->currentId)));
+        $value->addTag('container.service_subscriber.locator', ['id' => (string) ServiceLocatorTagPass::register($this->container, $subscriberMap, $this->currentId)]);
 
         return parent::processValue($value);
     }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/RemoveUnusedDefinitionsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/RemoveUnusedDefinitionsPass.php
index 5a8548a1958a..a1013f66c00b 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/RemoveUnusedDefinitionsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/RemoveUnusedDefinitionsPass.php
@@ -45,8 +45,8 @@ public function process(ContainerBuilder $container)
 
             if ($graph->hasNode($id)) {
                 $edges = $graph->getNode($id)->getInEdges();
-                $referencingAliases = array();
-                $sourceIds = array();
+                $referencingAliases = [];
+                $sourceIds = [];
                 foreach ($edges as $edge) {
                     if ($edge->isWeak()) {
                         continue;
@@ -60,7 +60,7 @@ public function process(ContainerBuilder $container)
                 }
                 $isReferenced = (\count(array_unique($sourceIds)) - \count($referencingAliases)) > 0;
             } else {
-                $referencingAliases = array();
+                $referencingAliases = [];
                 $isReferenced = false;
             }
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
index 8e2067659245..472bf9415ad6 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
@@ -33,8 +33,8 @@ class ReplaceAliasByActualDefinitionPass extends AbstractRecursivePass
     public function process(ContainerBuilder $container)
     {
         // First collect all alias targets that need to be replaced
-        $seenAliasTargets = array();
-        $replacements = array();
+        $seenAliasTargets = [];
+        $replacements = [];
         foreach ($container->getAliases() as $definitionId => $target) {
             $targetId = $container->normalizeId($target);
             // Special case: leave this target alone
@@ -69,7 +69,7 @@ public function process(ContainerBuilder $container)
         $this->replacements = $replacements;
 
         parent::process($container);
-        $this->replacements = array();
+        $this->replacements = [];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveBindingsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveBindingsPass.php
index bcf265ab4723..0fad285e5aaf 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveBindingsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveBindingsPass.php
@@ -25,9 +25,9 @@
  */
 class ResolveBindingsPass extends AbstractRecursivePass
 {
-    private $usedBindings = array();
-    private $unusedBindings = array();
-    private $errorMessages = array();
+    private $usedBindings = [];
+    private $unusedBindings = [];
+    private $errorMessages = [];
 
     /**
      * {@inheritdoc}
@@ -48,9 +48,9 @@ public function process(ContainerBuilder $container)
                 throw new InvalidArgumentException($message);
             }
         } finally {
-            $this->usedBindings = array();
-            $this->unusedBindings = array();
-            $this->errorMessages = array();
+            $this->usedBindings = [];
+            $this->unusedBindings = [];
+          
10000
  $this->errorMessages = [];
         }
     }
 
@@ -80,7 +80,7 @@ protected function processValue($value, $isRoot = false)
                 $this->usedBindings[$bindingId] = true;
                 unset($this->unusedBindings[$bindingId]);
             } elseif (!isset($this->usedBindings[$bindingId])) {
-                $this->unusedBindings[$bindingId] = array($key, $this->currentId);
+                $this->unusedBindings[$bindingId] = [$key, $this->currentId];
             }
 
             if (isset($key[0]) && '$' === $key[0]) {
@@ -100,7 +100,7 @@ protected function processValue($value, $isRoot = false)
 
         try {
             if ($constructor = $this->getConstructor($value, false)) {
-                $calls[] = array($constructor, $value->getArguments());
+                $calls[] = [$constructor, $value->getArguments()];
             }
         } catch (RuntimeException $e) {
             $this->errorMessages[] = $e->getMessage();
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveChildDefinitionsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveChildDefinitionsPass.php
index d647eda2376c..539395a43742 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveChildDefinitionsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveChildDefinitionsPass.php
@@ -39,7 +39,7 @@ protected function processValue($value, $isRoot = false)
             $value = $this->container->getDefinition($this->currentId);
         }
         if ($value instanceof ChildDefinition) {
-            $this->currentPath = array();
+            $this->currentPath = [];
             $value = $this->resolveDefinition($value);
             if ($isRoot) {
                 $this->container->setDefinition($this->currentId, $value);
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveClassPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveClassPass.php
index 910cb9de9864..b1c1b4f884e0 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveClassPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveClassPass.php
@@ -20,7 +20,7 @@
  */
 class ResolveClassPass implements CompilerPassInterface
 {
-    private $changes = array();
+    private $changes = [];
 
     /**
      * {@inheritdoc}
@@ -49,7 +49,7 @@ public function process(ContainerBuilder $container)
     public function getChanges()
     {
         $changes = $this->changes;
-        $this->changes = array();
+        $this->changes = [];
 
         return $changes;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveHotPathPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveHotPathPass.php
index 2888cf4d396d..4e025113acdb 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveHotPathPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveHotPathPass.php
@@ -24,7 +24,7 @@
 class ResolveHotPathPass extends AbstractRecursivePass
 {
     private $tagName;
-    private $resolvedIds = array();
+    private $resolvedIds = [];
 
     public function __construct($tagName = 'container.hot_path')
     {
@@ -40,7 +40,7 @@ public function process(ContainerBuilder $container)
             parent::process($container);
             $container->getDefinition('service_container')->clearTag($this->tagName);
         } finally {
-            $this->resolvedIds = array();
+            $this->resolvedIds = [];
         }
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
index 20507cfb5698..69e3796df0c4 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
@@ -50,7 +50,7 @@ public function process(ContainerBuilder $container)
     private function processDefinition(ContainerBuilder $container, $id, Definition $definition)
     {
         $instanceofConditionals = $definition->getInstanceofConditionals();
-        $autoconfiguredInstanceof = $definition->isAutoconfigured() ? $container->getAutoconfiguredInstanceof() : array();
+        $autoconfiguredInstanceof = $definition->isAutoconfigured() ? $container->getAutoconfiguredInstanceof() : [];
         if (!$instanceofConditionals && !$autoconfiguredInstanceof) {
             return $definition;
         }
@@ -61,9 +61,9 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
 
         $conditionals = $this->mergeConditionals($autoconfiguredInstanceof, $instanceofConditionals, $container);
 
-        $definition->setInstanceofConditionals(array());
+        $definition->setInstanceofConditionals([]);
         $parent = $shared = null;
-        $instanceofTags = array();
+        $instanceofTags = [];
 
         foreach ($conditionals as $interface => $instanceofDefs) {
             if ($interface !== $class && (!$container->getReflectionClass($class, false))) {
@@ -81,7 +81,7 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
                 $parent = 'instanceof.'.$interface.'.'.$key.'.'.$id;
                 $container->setDefinition($parent, $instanceofDef);
                 $instanceofTags[] = $instanceofDef->getTags();
-                $instanceofDef->setTags(array());
+                $instanceofDef->setTags([]);
 
                 if (isset($instanceofDef->getChanges()['shared'])) {
                     $shared = $instanceofDef->isShared();
@@ -94,7 +94,7 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
             $abstract = $container->setDefinition('abstract.instanceof.'.$id, $definition);
 
             // cast Definition to ChildDefinition
-            $definition->setBindings(array());
+            $definition->setBindings([]);
             $definition = serialize($definition);
             $definition = substr_replace($definition, '53', 2, 2);
             $definition = substr_replace($definition, 'Child', 44, 0);
@@ -121,11 +121,11 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
 
             // reset fields with "merge" behavior
             $abstract
-                ->setBindings(array())
-                ->setArguments(array())
-                ->setMethodCalls(array())
+                ->setBindings([])
+                ->setArguments([])
+                ->setMethodCalls([])
                 ->setDecoratedService(null)
-                ->setTags(array())
+                ->setTags([])
                 ->setAbstract(true);
         }
 
@@ -135,7 +135,7 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
     private function mergeConditionals(array $autoconfiguredInstanceof, array $instanceofConditionals, ContainerBuilder $container)
     {
         // make each value an array of ChildDefinition
-        $conditionals = array_map(function ($childDef) { return array($childDef); }, $autoconfiguredInstanceof);
+        $conditionals = array_map(function ($childDef) { return [$childDef]; }, $autoconfiguredInstanceof);
 
         foreach ($instanceofConditionals as $interface => $instanceofDef) {
             // make sure the interface/class exists (but don't validate automaticInstanceofConditionals)
@@ -144,7 +144,7 @@ private function mergeConditionals(array $autoconfiguredInstanceof, array $insta
             }
 
             if (!isset($autoconfiguredInstanceof[$interface])) {
-                $conditionals[$interface] = array();
+                $conditionals[$interface] = [];
             }
 
             $conditionals[$interface][] = $instanceofDef;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveNamedArgumentsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveNamedArgumentsPass.php
index 36980df09fd9..ee54288ec324 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveNamedArgumentsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveNamedArgumentsPass.php
@@ -33,12 +33,12 @@ protected function processValue($value, $isRoot = false)
         }
 
         $calls = $value->getMethodCalls();
-        $calls[] = array('__construct', $value->getArguments());
+        $calls[] = ['__construct', $value->getArguments()];
 
         foreach ($calls as $i => $call) {
             list($method, $arguments) = $call;
             $parameters = null;
-            $resolvedArguments = array();
+            $resolvedArguments = [];
 
             foreach ($arguments as $key => $argument) {
                 if (\is_int($key)) {
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveParameterPlaceHoldersPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveParameterPlaceHoldersPass.php
index 9a59a73ec5e1..8c942b524ea3 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveParameterPlaceHoldersPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveParameterPlaceHoldersPass.php
@@ -42,7 +42,7 @@ public function process(ContainerBuilder $container)
         try {
             parent::process($container);
 
-            $aliases = array();
+            $aliases = [];
             foreach ($container->getAliases() as $name => $target) {
                 $this->currentId = $name;
                 $aliases[$this->bag->resolveValue($name)] = $target;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveReferencesToAliasesPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveReferencesToAliasesPass.php
index 839af1ae232d..b80e45256cbe 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveReferencesToAliasesPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveReferencesToAliasesPass.php
@@ -63,10 +63,10 @@ protected function processValue($value, $isRoot = false)
      */
     private function getDefinitionId($id, ContainerBuilder $container)
     {
-        $seen = array();
+        $seen = [];
         while ($container->hasAlias($id)) {
             if (isset($seen[$id])) {
-                throw new ServiceCircularReferenceException($id, array_merge(array_keys($seen), array($id)));
+                throw new ServiceCircularReferenceException($id, array_merge(array_keys($seen), [$id]));
             }
             $seen[$id] = true;
             $id = $container->normalizeId($container->getAlias($id));
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
index 5a0703e83358..93e489c8f6a6 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
@@ -102,7 +102,7 @@ public static function register(ContainerBuilder $container, array $refMap, $cal
             // to derivate customized instances from the prototype one.
             $container->register($id .= '.'.$callerId, ServiceLocator::class)
                 ->setPublic(false)
-                ->setFactory(array(new Reference($locatorId), 'withContext'))
+                ->setFactory([new Reference($locatorId), 'withContext'])
                 ->addArgument($callerId)
                 ->addArgument(new Reference('service_container'));
         }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraph.php b/src/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraph.php
index 83486f053371..23d4745ed3d9 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraph.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraph.php
@@ -28,7 +28,7 @@ class ServiceReferenceGraph
     /**
      * @var ServiceReferenceGraphNode[]
      */
-    private $nodes = array();
+    private $nodes = [];
 
     /**
      * Checks if the graph has a specific node.
@@ -78,7 +78,7 @@ public function clear()
         foreach ($this->nodes as $node) {
             $node->clear();
         }
-        $this->nodes = array();
+        $this->nodes = [];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraphNode.php b/src/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraphNode.php
index 36b99f1a8253..6abd6c86af70 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraphNode.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraphNode.php
@@ -24,8 +24,8 @@
 class ServiceReferenceGraphNode
 {
     private $id;
-    private $inEdges = array();
-    private $outEdges = array();
+    private $inEdges = [];
+    private $outEdges = [];
     private $value;
 
     /**
@@ -113,6 +113,6 @@ public function getValue()
      */
     public function clear()
     {
-        $this->inEdges = $this->outEdges = array();
+        $this->inEdges = $this->outEdges = [];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php b/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
index 0eac93964b94..6bb9bb0d1ecc 100644
--- a/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
+++ b/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
@@ -23,7 +23,7 @@ class AutowireServiceResource implements SelfCheckingResourceInterface, \Seriali
 {
     private $class;
     private $filePath;
-    private $autowiringMetadata = array();
+    private $autowiringMetadata = [];
 
     public function __construct($class, $path, array $autowiringMetadata)
     {
@@ -60,13 +60,13 @@ public function __toString()
 
     public function serialize()
     {
-        return serialize(array($this->class, $this->filePath, $this->autowiringMetadata));
+        return serialize([$this->class, $this->filePath, $this->autowiringMetadata]);
     }
 
     public function unserialize($serialized)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            list($this->class, $this->filePath, $this->autowiringMetadata) = unserialize($serialized, array('allowed_classes' => false));
+            list($this->class, $this->filePath, $this->autowiringMetadata) = unserialize($serialized, ['allowed_classes' => false]);
         } else {
             list($this->class, $this->filePath, $this->autowiringMetadata) = unserialize($serialized);
         }
diff --git a/src/Symfony/Component/DependencyInjection/Container.php b/src/Symfony/Component/DependencyInjection/Container.php
index 4d3e3883d428..ea4a6d7631f1 100644
--- a/src/Symfony/Component/DependencyInjection/Container.php
+++ b/src/Symfony/Component/DependencyInjection/Container.php
@@ -40,26 +40,26 @@
 class Container implements ResettableContainerInterface
 {
     protected $parameterBag;
-    protected $services = array();
-    protected $fileMap = array();
-    protected $methodMap = array();
-    protected $aliases = array();
-    protected $loading = array();
-    protected $resolving = array();
-    protected $syntheticIds = array();
+    protected $services = [];
+    protected $fileMap = [];
+    protected $methodMap = [];
+    protected $aliases = [];
+    protected $loading = [];
+    protected $resolving = [];
+    protected $syntheticIds = [];
 
     /**
      * @internal
      */
-    protected $privates = array();
+    protected $privates = [];
 
     /**
      * @internal
      */
-    protected $normalizedIds = array();
+    protected $normalizedIds = [];
 
-    private $underscoreMap = array('_' => '', '.' => '_', '\\' => '_');
-    private $envCache = array();
+    private $underscoreMap = ['_' => '', '.' => '_', '\\' => '_'];
+    private $envCache = [];
     private $compiled = false;
     private $getEnv;
 
@@ -294,7 +294,7 @@ public function get($id, $invalidBehavior = /* self::EXCEPTION_ON_INVALID_REFERE
             }
 
             if (isset($this->loading[$id])) {
-                throw new ServiceCircularReferenceException($id, array_merge(array_keys($this->loading), array($id)));
+                throw new ServiceCircularReferenceException($id, array_merge(array_keys($this->loading), [$id]));
             }
 
             $this->loading[$id] = true;
@@ -331,13 +331,13 @@ public function get($id, $invalidBehavior = /* self::EXCEPTION_ON_INVALID_REFERE
                 throw new ServiceNotFoundException($id);
             }
             if (isset($this->syntheticIds[$id])) {
-                throw new ServiceNotFoundException($id, null, null, array(), sprintf('The "%s" service is synthetic, it needs to be set at boot time before it can be used.', $id));
+                throw new ServiceNotFoundException($id, null, null, [], sprintf('The "%s" service is synthetic, it needs to be set at boot time before it can be used.', $id));
             }
             if (isset($this->getRemovedIds()[$id])) {
-                throw new ServiceNotFoundException($id, null, null, array(), sprintf('The "%s" service or alias has been removed or inlined when the container was compiled. You should either make it public, or stop using the container directly and use dependency injection instead.', $id));
+                throw new ServiceNotFoundException($id, null, null, [], sprintf('The "%s" service or alias has been removed or inlined when the container was compiled. You should either make it public, or stop using the container directly and use dependency injection instead.', $id));
             }
 
-            $alternatives = array();
+            $alternatives = [];
             foreach ($this->getServiceIds() as $knownId) {
                 $lev = levenshtein($id, $knownId);
                 if ($lev <= \strlen($id) / 3 || false !== strpos($knownId, $id)) {
@@ -380,7 +380,7 @@ public function initialized($id)
      */
     public function reset()
     {
-        $this->services = array();
+        $this->services = [];
     }
 
     /**
@@ -390,7 +390,7 @@ public function reset()
      */
     public function getServiceIds()
     {
-        $ids = array();
+        $ids = [];
 
         if (!$this->methodMap && !$this instanceof ContainerBuilder && __CLASS__ !== static::class) {
             // We only check the convention-based factory in a compiled container (i.e. a child class other than a ContainerBuilder,
@@ -415,7 +415,7 @@ public function getServiceIds()
      */
     public function getRemovedIds()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -427,7 +427,7 @@ public function getRemovedIds()
      */
     public static function camelize($id)
     {
-        return strtr(ucwords(strtr($id, array('_' => ' ', '.' => '_ ', '\\' => '_ '))), array(' ' => ''));
+        return strtr(ucwords(strtr($id, ['_' => ' ', '.' => '_ ', '\\' => '_ '])), [' ' => '']);
     }
 
     /**
@@ -439,7 +439,7 @@ public static function camelize($id)
      */
     public static function underscore($id)
     {
-        return strtolower(preg_replace(array('/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'), array('\\1_\\2', '\\1_\\2'), str_replace('_', '.', $id)));
+        return strtolower(preg_replace(['/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'], ['\\1_\\2', '\\1_\\2'], str_replace('_', '.', $id)));
     }
 
     /**
@@ -470,7 +470,7 @@ protected function getEnv($name)
             return $this->envCache[$name];
         }
         if (!$this->has($id = 'container.env_var_processors_locator')) {
-            $this->set($id, new ServiceLocator(array()));
+            $this->set($id, new ServiceLocator([]));
         }
         if (!$this->getEnv) {
             $this->getEnv = new \ReflectionMethod($this, __FUNCTION__);
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 5fe6f2ae6fdf..436f45b85429 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -53,29 +53,29 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     /**
      * @var ExtensionInterface[]
      */
-    private $extensions = array();
+    private $extensions = [];
 
     /**
      * @var ExtensionInterface[]
      */
-    private $extensionsByNs = array();
+    private $extensionsByNs = [];
 
     /**
      * @var Definition[]
      */
-    private $definitions = array();
+    private $definitions = [];
 
     /**
      * @var Alias[]
      */
-    private $aliasDefinitions = array();
+    private $aliasDefinitions = [];
 
     /**
      * @var ResourceInterface[]
      */
-    private $resources = array();
+    private $resources = [];
 
-    private $extensionConfigs = array();
+    private $extensionConfigs = [];
 
     /**
      * @var Compiler
@@ -97,33 +97,33 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    private $expressionLanguageProviders = array();
+    private $expressionLanguageProviders = [];
 
     /**
      * @var string[] with tag names used by findTaggedServiceIds
      */
-    private $usedTags = array();
+    private $usedTags = [];
 
     /**
      * @var string[][] a map of env var names to their placeholders
      */
-    private $envPlaceholders = array();
+    private $envPlaceholders = [];
 
     /**
      * @var int[] a map of env vars to their resolution counter
      */
-    private $envCounters = array();
+    private $envCounters = [];
 
     /**
      * @var string[] the list of vendor directories
      */
     private $vendors;
 
-    private $autoconfiguredInstanceof = array();
+    private $autoconfiguredInstanceof = [];
 
-    private $removedIds = array();
+    private $removedIds = [];
 
-    private static $internalTypes = array(
+    private static $internalTypes = [
         'int' => true,
         'float' => true,
         'string' => true,
@@ -135,7 +135,7 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
         'callable' => true,
         'iterable' => true,
         'mixed' => true,
-    );
+    ];
 
     public function __construct(ParameterBagInterface $parameterBag = null)
     {
@@ -449,7 +449,7 @@ public function loadFromExtension($extension, array $values = null)
         }
 
         if (\func_num_args() < 2) {
-            $values = array();
+            $values = [];
         }
 
         $namespace = $this->getExtension($extension)->getAlias();
@@ -596,7 +596,7 @@ private function doGet($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_
         }
         if (null === $inlineServices) {
             $isConstructorArgument = true;
-            $inlineServices = array();
+            $inlineServices = [];
         }
         try {
             if (ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE === $invalidBehavior) {
@@ -676,7 +676,7 @@ public function merge(self $container)
 
         foreach ($this->extensions as $name => $extension) {
             if (!isset($this->extensionConfigs[$name])) {
-                $this->extensionConfigs[$name] = array();
+                $this->extensionConfigs[$name] = [];
             }
 
             $this->extensionConfigs[$name] = array_merge($this->extensionConfigs[$name], $container->getExtensionConfig($name));
@@ -686,7 +686,7 @@ public function merge(self $container)
             $envPlaceholders = $container->getParameterBag()->getEnvPlaceholders();
             $this->getParameterBag()->mergeEnvPlaceholders($container->getParameterBag());
         } else {
-            $envPlaceholders = array();
+            $envPlaceholders = [];
         }
 
         foreach ($container->envCounters as $env => $count) {
@@ -719,7 +719,7 @@ public function merge(self $container)
     public function getExtensionConfig($name)
     {
         if (!isset($this->extensionConfigs[$name])) {
-            $this->extensionConfigs[$name] = array();
+            $this->extensionConfigs[$name] = [];
         }
 
         return $this->extensionConfigs[$name];
@@ -734,7 +734,7 @@ public function getExtensionConfig($name)
     public function prependExtensionConfig($name, array $config)
     {
         if (!isset($this->extensionConfigs[$name])) {
-            $this->extensionConfigs[$name] = array();
+            $this->extensionConfigs[$name] = [];
         }
 
         array_unshift($this->extensionConfigs[$name], $config);
@@ -793,7 +793,7 @@ public function compile(/*$resolveEnvPlaceholders = false*/)
             }
         }
 
-        $this->extensionConfigs = array();
+        $this->extensionConfigs = [];
 
         if ($bag instanceof EnvPlaceholderParameterBag) {
             if ($resolveEnvPlaceholders) {
@@ -847,7 +847,7 @@ public function addAliases(array $aliases)
      */
     public function setAliases(array $aliases)
     {
-        $this->aliasDefinitions = array();
+        $this->aliasDefinitions = [];
         $this->addAliases($aliases);
     }
 
@@ -987,7 +987,7 @@ public function addDefinitions(array $definitions)
      */
     public function setDefinitions(array $definitions)
     {
-        $this->definitions = array();
+        $this->definitions = [];
         $this->addDefinitions($definitions);
     }
 
@@ -1071,7 +1071,7 @@ public function findDefinition($id)
     {
         $id = $this->normalizeId($id);
 
-        $seen = array();
+        $seen = [];
         while (isset($this->aliasDefinitions[$id])) {
             $id = (string) $this->aliasDefinitions[$id];
 
@@ -1143,7 +1143,7 @@ private function createService(Definition $definition, array &$inlineServices, $
 
         if (null !== $factory = $definition->getFactory()) {
             if (\is_array($factory)) {
-                $factory = array($this->doResolveServices($parameterBag->resolveValue($factory[0]), $inlineServices, $isConstructorArgument), $factory[1]);
+                $factory = [$this->doResolveServices($parameterBag->resolveValue($factory[0]), $inlineServices, $isConstructorArgument), $factory[1]];
             } elseif (!\is_string($factory)) {
                 throw new RuntimeException(sprintf('Cannot create service "%s" because of invalid factory', $id));
             }
@@ -1169,7 +1169,7 @@ private function createService(Definition $definition, array &$inlineServices, $
             $service = null === $r->getConstructor() ? $r->newInstance() : $r->newInstanceArgs($arguments);
             // don't trigger deprecations for internal uses
             // @deprecated since version 3.3, to be removed in 4.0 along with the deprecated class
-            $deprecationWhitelist = array('event_dispatcher' => ContainerAwareEventDispatcher::class);
+            $deprecationWhitelist = ['event_dispatcher' => ContainerAwareEventDispatcher::class];
 
             if (!$definition->isDeprecated() && 0 < strpos($r->getDocComment(), "\n * @deprecated ") && (!isset($deprecationWhitelist[$id]) || $deprecationWhitelist[$id] !== $class)) {
                 @trigger_error(sprintf('The "%s" service relies on the deprecated "%s" class. It should either be deprecated or its implementation upgraded.', $id, $r->name), E_USER_DEPRECATED);
@@ -1224,7 +1224,7 @@ public function resolveServices($value)
         return $this->doResolveServices($value);
     }
 
-    private function doResolveServices($value, array &$inlineServices = array(), $isConstructorArgument = false)
+    private function doResolveServices($value, array &$inlineServices = [], $isConstructorArgument = false)
     {
         if (\is_array($value)) {
             foreach ($value as $k => $v) {
@@ -1277,7 +1277,7 @@ private function doResolveServices($value, array &$inlineServices = array(), $is
         } elseif ($value instanceof Parameter) {
             $value = $this->getParameter((string) $value);
         } elseif ($value instanceof Expression) {
-            $value = $this->getExpressionLanguage()->evaluate($value, array('container' => $this));
+            $value = $this->getExpressionLanguage()->evaluate($value, ['container' => $this]);
         }
 
         return $value;
@@ -1305,7 +1305,7 @@ private function doResolveServices($value, array &$inlineServices = array(), $is
     public function findTaggedServiceIds($name, $throwOnAbstract = false)
     {
         $this->usedTags[] = $name;
-        $tags = array();
+        $tags = [];
         foreach ($this->getDefinitions() as $id => $definition) {
             if ($definition->hasTag($name)) {
                 if ($throwOnAbstract && $definition->isAbstract()) {
@@ -1325,7 +1325,7 @@ public function findTaggedServiceIds($name, $throwOnAbstract = false)
      */
     public function findTags()
     {
-        $tags = array();
+        $tags = [];
         foreach ($this->getDefinitions() as $id => $definition) {
             $tags = array_merge(array_keys($definition->getTags()), $tags);
         }
@@ -1405,7 +1405,7 @@ public function resolveEnvPlaceholders($value, $format = null, array &$usedEnvs
         }
 
         if (\is_array($value)) {
-            $result = array();
+            $result = [];
             foreach ($value as $k => $v) {
                 $result[\is_string($k) ? $this->resolveEnvPlaceholders($k, $format, $usedEnvs) : $k] = $this->resolveEnvPlaceholders($v, $format, $usedEnvs);
             }
@@ -1473,7 +1473,7 @@ public function getEnvCounters()
      */
     public function getNormalizedIds()
     {
-        $normalizedIds = array();
+        $normalizedIds = [];
 
         foreach ($this->normalizedIds as $k => $v) {
             if ($v !== (string) $k) {
@@ -1515,7 +1515,7 @@ public function normalizeId($id)
      */
     public static function getServiceConditionals($value)
     {
-        $services = array();
+        $services = [];
 
         if (\is_array($value)) {
             foreach ($value as $v) {
@@ -1539,7 +1539,7 @@ public static function getServiceConditionals($value)
      */
     public static function getInitializedConditionals($value)
     {
-        $services = array();
+        $services = [];
 
         if (\is_array($value)) {
             foreach ($value as $v) {
@@ -1563,7 +1563,7 @@ public static function hash($value)
     {
         $hash = substr(base64_encode(hash('sha256', serialize($value), true)), 0, 7);
 
-        return str_replace(array('/', '+'), array('.', '_'), strtolower($hash));
+        return str_replace(['/', '+'], ['.', '_'], strtolower($hash));
     }
 
     /**
@@ -1607,7 +1607,7 @@ private function callMethod($service, $call, array &$inlineServices)
             }
         }
 
-        \call_user_func_array(array($service, $call[0]), $this->doResolveServices($this->getParameterBag()->unescapeValue($this->getParameterBag()->resolveValue($call[1])), $inlineServices));
+        \call_user_func_array([$service, $call[0]], $this->doResolveServices($this->getParameterBag()->unescapeValue($this->getParameterBag()->resolveValue($call[1])), $inlineServices));
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Definition.php b/src/Symfony/Component/DependencyInjection/Definition.php
index 849d617a1860..171bcaf46a36 100644
--- a/src/Symfony/Component/DependencyInjection/Definition.php
+++ b/src/Symfony/Component/DependencyInjection/Definition.php
@@ -28,12 +28,12 @@ class Definition
     private $shared = true;
     private $deprecated = false;
     private $deprecationTemplate;
-    private $properties = array();
-    private $calls = array();
-    private $instanceof = array();
+    private $properties = [];
+    private $calls = [];
+    private $instanceof = [];
     private $autoconfigured = false;
     private $configurator;
-    private $tags = array();
+    private $tags = [];
     private $public = true;
     private $private = true;
     private $synthetic = false;
@@ -41,12 +41,12 @@ class Definition
     private $lazy = false;
     private $decoratedService;
     private $autowired = false;
-    private $autowiringTypes = array();
-    private $changes = array();
-    private $bindings = array();
-    private $errors = array();
+    private $autowiringTypes = [];
+    private $changes = [];
+    private $bindings = [];
+    private $errors = [];
 
-    protected $arguments = array();
+    protected $arguments = [];
 
     private static $defaultDeprecationTemplate = 'The "%service_id%" service is deprecated. You should stop using it, as it will soon be removed.';
 
@@ -54,7 +54,7 @@ class Definition
      * @param string|null $class     The service class
      * @param array       $arguments An array of arguments to pass to the service constructor
      */
-    public function __construct($class = null, array $arguments = array())
+    public function __construct($class = null, array $arguments = [])
     {
         if (null !== $class) {
             $this->setClass($class);
@@ -138,7 +138,7 @@ public function setDecoratedService($id, $renamedId = null, $priority = 0)
         if (null === $id) {
             $this->decoratedService = null;
         } else {
-            $this->decoratedService = array($id, $renamedId, (int) $priority);
+            $this->decoratedService = [$id, $renamedId, (int) $priority];
         }
 
         return $this;
@@ -320,9 +320,9 @@ public function getArgument($index)
      *
      * @return $this
      */
-    public function setMethodCalls(array $calls = array())
+    public function setMethodCalls(array $calls = [])
     {
-        $this->calls = array();
+        $this->calls = [];
         foreach ($calls as $call) {
             $this->addMethodCall($call[0], $call[1]);
         }
@@ -340,12 +340,12 @@ public function setMethodCalls(array $calls = array())
      *
      * @throws InvalidArgumentException on empty $method param
      */
-    public function addMethodCall($method, array $arguments = array())
+    public function addMethodCall($method, array $arguments = [])
     {
         if (empty($method)) {
             throw new InvalidArgumentException('Method name cannot be empty.');
         }
-        $this->calls[] = array($method, $arguments);
+        $this->calls[] = [$method, $arguments];
 
         return $this;
     }
@@ -476,7 +476,7 @@ public function getTags()
      */
     public function getTag($name)
     {
-        return isset($this->tags[$name]) ? $this->tags[$name] : array();
+        return isset($this->tags[$name]) ? $this->tags[$name] : [];
     }
 
     /**
@@ -487,7 +487,7 @@ public function getTag($name)
      *
      * @return $this
      */
-    public function addTag($name, array $attributes = array())
+    public function addTag($name, array $attributes = [])
     {
         $this->tags[$name][] = $attributes;
 
@@ -527,7 +527,7 @@ public function clearTag($name)
      */
     public function clearTags()
     {
-        $this->tags = array();
+        $this->tags = [];
 
         return $this;
     }
@@ -816,7 +816,7 @@ public function setAutowiringTypes(array $types)
     {
         @trigger_error('Autowiring-types are deprecated since Symfony 3.3 and will be removed in 4.0. Use aliases instead.', E_USER_DEPRECATED);
 
-        $this->autowiringTypes = array();
+        $this->autowiringTypes = [];
 
         foreach ($types as $type) {
             $this->autowiringTypes[$type] = true;
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/DumperInterface.php b/src/Symfony/Component/DependencyInjection/Dumper/DumperInterface.php
index dd001e4ed080..1ea775ddfe03 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/DumperInterface.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/DumperInterface.php
@@ -25,5 +25,5 @@ interface DumperInterface
      *
      * @return string The representation of the service container
      */
-    public function dump(array $options = array());
+    public function dump(array $options = []);
 }
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/GraphvizDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/GraphvizDumper.php
index 2105d1d40f2e..3adcef79b195 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/GraphvizDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/GraphvizDumper.php
@@ -32,14 +32,14 @@ class GraphvizDumper extends Dumper
 {
     private $nodes;
     private $edges;
-    private $options = array(
-            'graph' => array('ratio' => 'compress'),
-            'node' => array('fontsize' => 11, 'fontname' => 'Arial', 'shape' => 'record'),
-            'edge' => array('fontsize' => 9, 'fontname' => 'Arial', 'color' => 'grey', 'arrowhead' => 'open', 'arrowsize' => 0.5),
-            'node.instance' => array('fillcolor' => '#9999ff', 'style' => 'filled'),
-            'node.definition' => array('fillcolor' => '#eeeeee'),
-            'node.missing' => array('fillcolor' => '#ff9999', 'style' => 'filled'),
-        );
+    private $options = [
+            'graph' => ['ratio' => 'compress'],
+            'node' => ['fontsize' => 11, 'fontname' => 'Arial', 'shape' => 'record'],
+            'edge' => ['fontsize' => 9, 'fontname' => 'Arial', 'color' => 'grey', 'arrowhead' => 'open', 'arrowsize' => 0.5],
+            'node.instance' => ['fillcolor' => '#9999ff', 'style' => 'filled'],
+            'node.definition' => ['fillcolor' => '#eeeeee'],
+            'node.missing' => ['fillcolor' => '#ff9999', 'style' => 'filled'],
+        ];
 
     /**
      * Dumps the service container as a graphviz graph.
@@ -55,9 +55,9 @@ class GraphvizDumper extends Dumper
      *
      * @return string The dot representation of the service container
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
-        foreach (array('graph', 'node', 'edge', 'node.instance', 'node.definition', 'node.missing') as $key) {
+        foreach (['graph', 'node', 'edge', 'node.instance', 'node.definition', 'node.missing'] as $key) {
             if (isset($options[$key])) {
                 $this->options[$key] = array_merge($this->options[$key], $options[$key]);
             }
@@ -65,7 +65,7 @@ public function dump(array $options = array())
 
         $this->nodes = $this->findNodes();
 
-        $this->edges = array();
+        $this->edges = [];
         foreach ($this->container->getDefinitions() as $id => $definition) {
             $this->edges[$id] = array_merge(
                 $this->findEdges($id, $definition->getArguments(), true, ''),
@@ -129,7 +129,7 @@ private function addEdges()
      */
     private function findEdges($id, array $arguments, $required, $name, $lazy = false)
     {
-        $edges = array();
+        $edges = [];
         foreach ($arguments as $argument) {
             if ($argument instanceof Parameter) {
                 $argument = $this->container->hasParameter($argument) ? $this->container->getParameter($argument) : null;
@@ -141,12 +141,12 @@ private function findEdges($id, array $arguments, $required, $name, $lazy = fals
                 $lazyEdge = $lazy;
 
                 if (!$this->container->has((string) $argument)) {
-                    $this->nodes[(string) $argument] = array('name' => $name, 'required' => $required, 'class' => '', 'attributes' => $this->options['node.missing']);
+                    $this->nodes[(string) $argument] = ['name' => $name, 'required' => $required, 'class' => '', 'attributes' => $this->options['node.missing']];
                 } elseif ('service_container' !== (string) $argument) {
                     $lazyEdge = $lazy || $this->container->getDefinition((string) $argument)->isLazy();
                 }
 
-                $edges[] = array('name' => $name, 'required' => $required, 'to' => $argument, 'lazy' => $lazyEdge);
+                $edges[] = ['name' => $name, 'required' => $required, 'to' => $argument, 'lazy' => $lazyEdge];
             } elseif ($argument instanceof ArgumentInterface) {
                 $edges = array_merge($edges, $this->findEdges($id, $argument->getValues(), $required, $name, true));
             } elseif ($argument instanceof Definition) {
@@ -172,7 +172,7 @@ private function findEdges($id, array $arguments, $required, $name, $lazy = fals
      */
     private function findNodes()
     {
-        $nodes = array();
+        $nodes = [];
 
         $container = $this->cloneContainer();
 
@@ -188,7 +188,7 @@ private function findNodes()
             } catch (ParameterNotFoundException $e) {
             }
 
-            $nodes[$id] = array('class' => str_replace('\\', '\\\\', $class), 'attributes' => array_merge($this->options['node.definition'], array('style' => $definition->isShared() ? 'filled' : 'dotted')));
+            $nodes[$id] = ['class' => str_replace('\\', '\\\\', $class), 'attributes' => array_merge($this->options['node.definition'], ['style' => $definition->isShared() ? 'filled' : 'dotted'])];
             $container->setDefinition($id, new Definition('stdClass'));
         }
 
@@ -198,7 +198,7 @@ private function findNodes()
             }
 
             if (!$container->hasDefinition($id)) {
-                $nodes[$id] = array('class' => str_replace('\\', '\\\\', \get_class($container->get($id))), 'attributes' => $this->options['node.instance']);
+                $nodes[$id] = ['class' => str_replace('\\', '\\\\', \get_class($container->get($id))), 'attributes' => $this->options['node.instance']];
             }
         }
 
@@ -253,7 +253,7 @@ private function endDot()
      */
     private function addAttributes(array $attributes)
     {
-        $code = array();
+        $code = [];
         foreach ($attributes as $k => $v) {
             $code[] = sprintf('%s="%s"', $k, $v);
         }
@@ -270,7 +270,7 @@ private function addAttributes(array $attributes)
      */
     private function addOptions(array $options)
     {
-        $code = array();
+        $code = [];
         foreach ($options as $k => $v) {
             $code[] = sprintf('%s="%s"', $k, $v);
         }
@@ -299,7 +299,7 @@ private function dotize($id)
      */
     private function getAliases($id)
     {
-        $aliases = array();
+        $aliases = [];
         foreach ($this->container->getAliases() as $alias => $origin) {
             if ($id == $origin) {
                 $aliases[] = $alias;
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 3a3c24d0445b..1e348b2bf43b 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -57,7 +57,7 @@ class PhpDumper extends Dumper
     private $variableCount;
     private $inlinedDefinitions;
     private $serviceCalls;
-    private $reservedVariables = array('instance', 'class', 'this');
+    private $reservedVariables = ['instance', 'class', 'this'];
     private $expressionLanguage;
     private $targetDirRegex;
     private $targetDirMaxMatches;
@@ -68,8 +68,8 @@ class PhpDumper extends Dumper
     private $asFiles;
     private $hotPathTag;
     private $inlineRequires;
-    private $inlinedRequires = array();
-    private $circularReferences = array();
+    private $inlinedRequires = [];
+    private $circularReferences = [];
 
     /**
      * @var ProxyDumper
@@ -110,11 +110,11 @@ public function setProxyDumper(ProxyDumper $proxyDumper)
      *
      * @throws EnvParameterException When an env var exists but has not been dumped
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
         $this->targetDirRegex = null;
-        $this->inlinedRequires = array();
-        $options = array_merge(array(
+        $this->inlinedRequires = [];
+        $options = array_merge([
             'class' => 'ProjectServiceContainer',
             'base_class' => 'Container',
             'namespace' => '',
@@ -123,7 +123,7 @@ public function dump(array $options = array())
             'hot_path_tag' => 'container.hot_path',
             'inline_class_loader_parameter' => 'container.dumper.inline_class_loader',
             'build_time' => time(),
-        ), $options);
+        ], $options);
 
         $this->namespace = $options['namespace'];
         $this->asFiles = $options['as_files'];
@@ -155,8 +155,8 @@ public function dump(array $options = array())
         }
 
         (new AnalyzeServiceReferencesPass(false, !$this->getProxyDumper() instanceof NullDumper))->process($this->container);
-        $checkedNodes = array();
-        $this->circularReferences = array();
+        $checkedNodes = [];
+        $this->circularReferences = [];
         foreach ($this->container->getCompiler()->getServiceReferenceGraph()->getNodes() as $id => $node) {
             if (!$node->getValue() instanceof Definition) {
                 continue;
@@ -166,7 +166,7 @@ public function dump(array $options = array())
             }
         }
         $this->container->getCompiler()->getServiceReferenceGraph()->clear();
-        $checkedNodes = array();
+        $checkedNodes = [];
 
         $this->docStar = $options['debug'] ? '*' : '';
 
@@ -211,7 +211,7 @@ public function dump(array $options = array())
 // This file has been auto-generated by the Symfony Dependency Injection Component for internal use.
 
 EOF;
-            $files = array();
+            $files = [];
 
             if ($ids = array_keys($this->container->getRemovedIds())) {
                 sort($ids);
@@ -230,7 +230,7 @@ public function dump(array $options = array())
             }
             $files[$options['class'].'.php'] = $code;
             $hash = ucfirst(strtr(ContainerBuilder::hash($files), '._', 'xx'));
-            $code = array();
+            $code = [];
 
             foreach ($files as $file => $c) {
                 $code["Container{$hash}/{$file}"] = $c;
@@ -272,10 +272,10 @@ public function dump(array $options = array())
         }
 
         $this->targetDirRegex = null;
-        $this->inlinedRequires = array();
-        $this->circularReferences = array();
+        $this->inlinedRequires = [];
+        $this->circularReferences = [];
 
-        $unusedEnvs = array();
+        $unusedEnvs = [];
         foreach ($this->container->getEnvCounters() as $env => $use) {
             if (!$use) {
                 $unusedEnvs[] = $env;
@@ -302,7 +302,7 @@ private function getProxyDumper()
         return $this->proxyDumper;
     }
 
-    private function analyzeCircularReferences($sourceId, array $edges, &$checkedNodes, &$currentPath = array())
+    private function analyzeCircularReferences($sourceId, array $edges, &$checkedNodes, &$currentPath = [])
     {
         $checkedNodes[$sourceId] = true;
         $currentPath[$sourceId] = $sourceId;
@@ -331,7 +331,7 @@ private function analyzeCircularReferences($sourceId, array $edges, &$checkedNod
         unset($currentPath[$sourceId]);
     }
 
-    private function connectCircularReferences($sourceId, &$currentPath, &$subPath = array())
+    private function connectCircularReferences($sourceId, &$currentPath, &$subPath = [])
     {
         $subPath[$sourceId] = $sourceId;
         $currentPath[$sourceId] = $sourceId;
@@ -387,7 +387,7 @@ private function collectLineage($class, array &$lineage)
 
     private function generateProxyClasses()
     {
-        $alreadyGenerated = array();
+        $alreadyGenerated = [];
         $definitions = $this->container->getDefinitions();
         $strip = '' === $this->docStar && method_exists('Symfony\Component\HttpKernel\Kernel', 'stripComments');
         $proxyDumper = $this->getProxyDumper();
@@ -423,7 +423,7 @@ private function addServiceInclude($cId, Definition $definition)
         $code = '';
 
         if ($this->inlineRequires && !$this->isHotPath($definition)) {
-            $lineage = array();
+            $lineage = [];
             foreach ($this->inlinedDefinitions as $def) {
                 if (!$def->isDeprecated() && \is_string($class = \is_array($factory = $def->getFactory()) && \is_string($factory[0]) ? $factory[0] : $def->getClass())) {
                     $this->collectLineage($class, $lineage);
@@ -555,7 +555,7 @@ private function addServiceMethodCalls(Definition $definition, $variableName = '
     {
         $calls = '';
         foreach ($definition->getMethodCalls() as $call) {
-            $arguments = array();
+            $arguments = [];
             foreach ($call[1] as $value) {
                 $arguments[] = $this->dumpValue($value);
             }
@@ -625,11 +625,11 @@ private function addServiceConfigurator(Definition $definition, $variableName =
     private function addService($id, Definition $definition, &$file = null)
     {
         $this->definitionVariables = new \SplObjectStorage();
-        $this->referenceVariables = array();
+        $this->referenceVariables = [];
         $this->variableCount = 0;
         $this->referenceVariables[$id] = new Variable('instance');
 
-        $return = array();
+        $return = [];
 
         if ($class = $definition->getClass()) {
             $class = $class instanceof Parameter ? '%'.$class.'%' : $this->container->resolveEnvPlaceholders($class);
@@ -685,8 +685,8 @@ protected function {$methodName}($lazyInitialization)
 EOF;
         }
 
-        $this->serviceCalls = array();
-        $this->inlinedDefinitions = $this->getDefinitionsFromArguments(array($definition), null, $this->serviceCalls);
+        $this->serviceCalls = [];
+        $this->inlinedDefinitions = $this->getDefinitionsFromArguments([$definition], null, $this->serviceCalls);
 
         $code .= $this->addServiceInclude($id, $definition);
 
@@ -787,11 +787,11 @@ private function addInlineService($id, Definition $definition, Definition $inlin
             return '';
         }
 
-        $arguments = array($inlineDef->getArguments(), $inlineDef->getFactory());
+        $arguments = [$inlineDef->getArguments(), $inlineDef->getFactory()];
 
         $code = $this->addInlineVariables($id, $definition, $arguments, $forConstructor);
 
-        if ($arguments = array_filter(array($inlineDef->getProperties(), $inlineDef->getMethodCalls(), $inlineDef->getConfigurator()))) {
+        if ($arguments = array_filter([$inlineDef->getProperties(), $inlineDef->getMethodCalls(), $inlineDef->getConfigurator()])) {
             $isSimpleInstance = false;
         } elseif ($definition !== $inlineDef && 2 > $this->inlinedDefinitions[$inlineDef]) {
             return $code;
@@ -869,7 +869,7 @@ private function addNewInstance(Definition $definition, $return, $instantiation,
         $class = $this->dumpValue($definition->getClass());
         $return = '        '.$return.$instantiation;
 
-        $arguments = array();
+        $arguments = [];
         foreach ($definition->getArguments() as $value) {
             $arguments[] = $this->dumpValue($value);
         }
@@ -1247,11 +1247,11 @@ private function addInlineRequires()
             return '';
         }
 
-        $lineage = array();
+        $lineage = [];
 
         foreach ($this->container->findTaggedServiceIds($this->hotPathTag) as $id => $tags) {
             $definition = $this->container->getDefinition($id);
-            $inlinedDefinitions = $this->getDefinitionsFromArguments(array($definition));
+            $inlinedDefinitions = $this->getDefinitionsFromArguments([$definition]);
 
             foreach ($inlinedDefinitions as $def) {
                 if (\is_string($class = \is_array($factory = $def->getFactory()) && \is_string($factory[0]) ? $factory[0] : $def->getClass())) {
@@ -1283,9 +1283,9 @@ private function addDefaultParametersMethod()
             return '';
         }
 
-        $php = array();
-        $dynamicPhp = array();
-        $normalizedParams = array();
+        $php = [];
+        $dynamicPhp = [];
+        $normalizedParams = [];
 
         foreach ($this->container->getParameterBag()->all() as $key => $value) {
             if ($key !== $resolvedKey = $this->container->resolveEnvPlaceholders($key)) {
@@ -1294,7 +1294,7 @@ private function addDefaultParametersMethod()
             if ($key !== $lcKey = strtolower($key)) {
                 $normalizedParams[] = sprintf('        %s => %s,', $this->export($lcKey), $this->export($key));
             }
-            $export = $this->exportParameters(array($value));
+            $export = $this->exportParameters([$value]);
             $export = explode('0 => ', substr(rtrim($export, " )\n"), 7, -1), 2);
 
             if (preg_match("/\\\$this->(?:getEnv\('(?:\w++:)*+\w++'\)|targetDirs\[\d++\])/", $export[1])) {
@@ -1457,7 +1457,7 @@ protected function getDefaultParameters()
      */
     private function exportParameters(array $parameters, $path = '', $indent = 12)
     {
-        $php = array();
+        $php = [];
         foreach ($parameters as $key => $value) {
             if (\is_array($value)) {
                 $value = $this->exportParameters($value, $path.'/'.$key, $indent + 4);
@@ -1523,7 +1523,7 @@ private function wrapServiceConditionals($value, $code)
      */
     private function getServiceConditionals($value)
     {
-        $conditions = array();
+        $conditions = [];
         foreach (ContainerBuilder::getInitializedConditionals($value) as $service) {
             if (!$this->container->hasDefinition($service)) {
                 return 'false';
@@ -1545,7 +1545,7 @@ private function getServiceConditionals($value)
         return implode(' && ', $conditions);
     }
 
-    private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage $definitions = null, array &$calls = array())
+    private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage $definitions = null, array &$calls = [])
     {
         if (null === $definitions) {
             $definitions = new \SplObjectStorage();
@@ -1558,7 +1558,7 @@ private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage
                 $id = $this->container->normalizeId($argument);
 
                 if (!isset($calls[$id])) {
-                    $calls[$id] = array(0, $argument->getInvalidBehavior());
+                    $calls[$id] = [0, $argument->getInvalidBehavior()];
                 } else {
                     $calls[$id][1] = min($calls[$id][1], $argument->getInvalidBehavior());
                 }
@@ -1570,7 +1570,7 @@ private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage
                 $definitions[$argument] = 1 + $definitions[$argument];
             } else {
                 $definitions[$argument] = 1;
-                $arguments = array($argument->getArguments(), $argument->getFactory(), $argument->getProperties(), $argument->getMethodCalls(), $argument->getConfigurator());
+                $arguments = [$argument->getArguments(), $argument->getFactory(), $argument->getProperties(), $argument->getMethodCalls(), $argument->getConfigurator()];
                 $this->getDefinitionsFromArguments($arguments, $definitions, $calls);
             }
         }
@@ -1594,14 +1594,14 @@ private function dumpValue($value, $interpolate = true)
             if ($value && $interpolate && false !== $param = array_search($value, $this->container->getParameterBag()->all(), true)) {
                 return $this->dumpValue("%$param%");
             }
-            $code = array();
+            $code = [];
             foreach ($value as $k => $v) {
                 $code[] = sprintf('%s => %s', $this->dumpValue($k, $interpolate), $this->dumpValue($v, $interpolate));
             }
 
             return sprintf('array(%s)', implode(', ', $code));
         } elseif ($value instanceof ArgumentInterface) {
-            $scope = array($this->definitionVariables, $this->referenceVariables);
+            $scope = [$this->definitionVariables, $this->referenceVariables];
             $this->definitionVariables = $this->referenceVariables = null;
 
             try {
@@ -1619,14 +1619,14 @@ private function dumpValue($value, $interpolate = true)
                 }
 
                 if ($value instanceof IteratorArgument) {
-                    $operands = array(0);
-                    $code = array();
+                    $operands = [0];
+                    $code = [];
                     $code[] = 'new RewindableGenerator(function () {';
 
                     if (!$values = $value->getValues()) {
                         $code[] = '            return new \EmptyIterator();';
                     } else {
-                        $countCode = array();
+                        $countCode = [];
                         $countCode[] = 'function () {';
 
                         foreach ($values as $k => $v) {
@@ -1664,7 +1664,7 @@ private function dumpValue($value, $interpolate = true)
                 throw new RuntimeException('Cannot dump definitions which have a configurator.');
             }
 
-            $arguments = array();
+            $arguments = [];
             foreach ($value->getArguments() as $argument) {
                 $arguments[] = $this->dumpValue($argument);
             }
@@ -1718,7 +1718,7 @@ private function dumpValue($value, $interpolate = true)
 
             return $this->getServiceCall($id, $value);
         } elseif ($value instanceof Expression) {
-            return $this->getExpressionLanguage()->compile((string) $value, array('this' => 'container'));
+            return $this->getExpressionLanguage()->compile((string) $value, ['this' => 'container']);
         } elseif ($value instanceof Parameter) {
             return $this->dumpParameter($value);
         } elseif (true === $interpolate && \is_string($value)) {
@@ -1848,8 +1848,8 @@ private function getServiceCall($id, Reference $reference = null)
      */
     private function initializeMethodNamesMap($class)
     {
-        $this->serviceIdToMethodNameMap = array();
-        $this->usedMethodNames = array();
+        $this->serviceIdToMethodNameMap = [];
+        $this->usedMethodNames = [];
 
         if ($reflectionClass = $this->container->getReflectionClass($class)) {
             foreach ($reflectionClass->getMethods() as $method) {
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/XmlDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/XmlDumper.php
index 1dcef12dabd3..36e3e121d23b 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/XmlDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/XmlDumper.php
@@ -40,7 +40,7 @@ class XmlDumper extends Dumper
      *
      * @return string An xml string representing of the service container
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
         $this->document = new \DOMDocument('1.0', 'utf-8');
         $this->document->formatOutput = true;
@@ -306,7 +306,7 @@ private function convertParameters(array $parameters, $type, \DOMElement $parent
                 $text = $this->document->createTextNode(self::phpToXml((string) $value));
                 $element->appendChild($text);
             } else {
-                if (\in_array($value, array('null', 'true', 'false'), true)) {
+                if (\in_array($value, ['null', 'true', 'false'], true)) {
                     $element->setAttribute('type', 'string');
                 }
                 $text = $this->document->createTextNode(self::phpToXml($value));
@@ -323,7 +323,7 @@ private function convertParameters(array $parameters, $type, \DOMElement $parent
      */
     private function escape(array $arguments)
     {
-        $args = array();
+        $args = [];
         foreach ($arguments as $k => $v) {
             if (\is_array($v)) {
                 $args[$k] = $this->escape($v);
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/YamlDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/YamlDumper.php
index 35441023de5b..8f3fcddf3079 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/YamlDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/YamlDumper.php
@@ -41,7 +41,7 @@ class YamlDumper extends Dumper
      *
      * @return string A YAML string representing of the service container
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
         if (!class_exists('Symfony\Component\Yaml\Dumper')) {
             throw new RuntimeException('Unable to dump the container as the Symfony Yaml Component is not installed.');
@@ -80,7 +80,7 @@ private function addService($id, Definition $definition)
         $tagsCode = '';
         foreach ($definition->getTags() as $name => $tags) {
             foreach ($tags as $attributes) {
-                $att = array();
+                $att = [];
                 foreach ($attributes as $key => $value) {
                     $att[] = sprintf('%s: %s', $this->dumper->dump($key), $this->dumper->dump($value));
                 }
@@ -224,7 +224,7 @@ private function addParameters()
 
         $parameters = $this->prepareParameters($this->container->getParameterBag()->all(), $this->container->isCompiled());
 
-        return $this->dumper->dump(array('parameters' => $parameters), 2);
+        return $this->dumper->dump(['parameters' => $parameters], 2);
     }
 
     /**
@@ -238,9 +238,9 @@ private function dumpCallable($callable)
     {
         if (\is_array($callable)) {
             if ($callable[0] instanceof Reference) {
-                $callable = array($this->getServiceCall((string) $callable[0], $callable[0]), $callable[1]);
+                $callable = [$this->getServiceCall((string) $callable[0], $callable[0]), $callable[1]];
             } else {
-                $callable = array($callable[0], $callable[1]);
+                $callable = [$callable[0], $callable[1]];
             }
         }
 
@@ -275,7 +275,7 @@ private function dumpValue($value)
         }
 
         if (\is_array($value)) {
-            $code = array();
+            $code = [];
             foreach ($value as $k => $v) {
                 $code[$k] = $this->dumpValue($v);
             }
@@ -344,7 +344,7 @@ private function getExpressionCall($expression)
      */
     private function prepareParameters(array $parameters, $escape = true)
     {
-        $filtered = array();
+        $filtered = [];
         foreach ($parameters as $key => $value) {
             if (\is_array($value)) {
                 $value = $this->prepareParameters($value, $escape);
@@ -365,7 +365,7 @@ private function prepareParameters(array $parameters, $escape = true)
      */
     private function escape(array $arguments)
     {
-        $args = array();
+        $args = [];
         foreach ($arguments as $k => $v) {
             if (\is_array($v)) {
                 $args[$k] = $this->escape($v);
diff --git a/src/Symfony/Component/DependencyInjection/EnvVarProcessor.php b/src/Symfony/Component/DependencyInjection/EnvVarProcessor.php
index 13568079bb68..a23b83436bbe 100644
--- a/src/Symfony/Component/DependencyInjection/EnvVarProcessor.php
+++ b/src/Symfony/Component/DependencyInjection/EnvVarProcessor.php
@@ -32,7 +32,7 @@ public function __construct(ContainerInterface $container)
      */
     public static function getProvidedTypes()
     {
-        return array(
+        return [
             'base64' => 'string',
             'bool' => 'bool',
             'const' => 'bool|int|float|string|array',
@@ -42,7 +42,7 @@ public static function getProvidedTypes()
             'json' => 'array',
             'resolve' => 'string',
             'string' => 'string',
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php b/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
index 7a30f629d518..b08f2e855977 100644
--- a/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
+++ b/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
@@ -32,7 +32,7 @@ class ParameterNotFoundException extends InvalidArgumentException
      * @param string[]    $alternatives         Some parameter name alternatives
      * @param string|null $nonNestedAlternative The alternative parameter name when the user expected dot notation for nested parameters
      */
-    public function __construct($key, $sourceId = null, $sourceKey = null, \Exception $previous = null, array $alternatives = array(), $nonNestedAlternative = null)
+    public function __construct($key, $sourceId = null, $sourceKey = null, \Exception $previous = null, array $alternatives = [], $nonNestedAlternative = null)
     {
         $this->key = $key;
         $this->sourceId = $sourceId;
diff --git a/src/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php b/src/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php
index 9a0128c83464..280dabf33fc5 100644
--- a/src/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php
+++ b/src/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php
@@ -24,7 +24,7 @@ class ServiceNotFoundException extends InvalidArgumentException implements NotFo
     private $sourceId;
     private $a
10000
lternatives;
 
-    public function __construct($id, $sourceId = null, \Exception $previous = null, array $alternatives = array(), $msg = null)
+    public function __construct($id, $sourceId = null, \Exception $previous = null, array $alternatives = [], $msg = null)
     {
         if (null !== $msg) {
             // no-op
diff --git a/src/Symfony/Component/DependencyInjection/ExpressionLanguage.php b/src/Symfony/Component/DependencyInjection/ExpressionLanguage.php
index 051d41b84ba4..0c1780b8b1aa 100644
--- a/src/Symfony/Component/DependencyInjection/ExpressionLanguage.php
+++ b/src/Symfony/Component/DependencyInjection/ExpressionLanguage.php
@@ -25,7 +25,7 @@ class ExpressionLanguage extends BaseExpressionLanguage
     /**
      * {@inheritdoc}
      */
-    public function __construct($cache = null, array $providers = array(), callable $serviceCompiler = null)
+    public function __construct($cache = null, array $providers = [], callable $serviceCompiler = null)
     {
         // prepend the default provider to let users override it easily
         array_unshift($providers, new ExpressionLanguageProvider($serviceCompiler));
diff --git a/src/Symfony/Component/DependencyInjection/ExpressionLanguageProvider.php b/src/Symfony/Component/DependencyInjection/ExpressionLanguageProvider.php
index e2084aa85da6..9198ca0a40a9 100644
--- a/src/Symfony/Component/DependencyInjection/ExpressionLanguageProvider.php
+++ b/src/Symfony/Component/DependencyInjection/ExpressionLanguageProvider.php
@@ -33,7 +33,7 @@ public function __construct(callable $serviceCompiler = null)
 
     public function getFunctions()
     {
-        return array(
+        return [
             new ExpressionFunction('service', $this->serviceCompiler ?: function ($arg) {
                 return sprintf('$this->get(%s)', $arg);
             }, function (array $variables, $value) {
@@ -45,6 +45,6 @@ public function getFunctions()
             }, function (array $variables, $value) {
                 return $variables['container']->getParameter($value);
             }),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Extension/Extension.php b/src/Symfony/Component/DependencyInjection/Extension/Extension.php
index 1bafdbebd08d..80a9419c5d3f 100644
--- a/src/Symfony/Component/DependencyInjection/Extension/Extension.php
+++ b/src/Symfony/Component/DependencyInjection/Extension/Extension.php
@@ -25,7 +25,7 @@
  */
 abstract class Extension implements ExtensionInterface, ConfigurationExtensionInterface
 {
-    private $processedConfigs = array();
+    private $processedConfigs = [];
 
     /**
      * {@inheritdoc}
@@ -104,7 +104,7 @@ final public function getProcessedConfigs()
         try {
             return $this->processedConfigs;
         } finally {
-            $this->processedConfigs = array();
+            $this->processedConfigs = [];
         }
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractConfigurator.php
index d11347aeabe5..f7222d0ed50e 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractConfigurator.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractConfigurator.php
@@ -28,7 +28,7 @@ abstract class AbstractConfigurator
     public function __call($method, $args)
     {
         if (method_exists($this, 'set'.$method)) {
-            return \call_user_func_array(array($this, 'set'.$method), $args);
+            return \call_user_func_array([$this, 'set'.$method], $args);
         }
 
         throw new \BadMethodCallException(sprintf('Call to undefined method %s::%s()', \get_class($this), $method));
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractServiceConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractServiceConfigurator.php
index 40b6c2f38972..0a565787fdf1 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractServiceConfigurator.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractServiceConfigurator.php
@@ -18,9 +18,9 @@ abstract class AbstractServiceConfigurator extends AbstractConfigurator
 {
     protected $parent;
     protected $id;
-    private $defaultTags = array();
+    private $defaultTags = [];
 
-    public function __construct(ServicesConfigurator $parent, Definition $definition, $id = null, array $defaultTags = array())
+    public function __construct(ServicesConfigurator $parent, Definition $definition, $id = null, array $defaultTags = [])
     {
         $this->parent = $parent;
         $this->definition = $definition;
@@ -36,7 +36,7 @@ public function __destruct()
                 $this->definition->addTag($name, $attributes);
             }
         }
-        $this->defaultTags = array();
+        $this->defaultTags = [];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/DefaultsConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/DefaultsConfigurator.php
index 631c92a68026..662ba95d1ba6 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/DefaultsConfigurator.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/DefaultsConfigurator.php
@@ -37,7 +37,7 @@ class DefaultsConfigurator extends AbstractServiceConfigurator
      *
      * @throws InvalidArgumentException when an invalid tag name or attribute is provided
      */
-    final public function tag($name, array $attributes = array())
+    final public function tag($name, array $attributes = [])
     {
         if (!\is_string($name) || '' === $name) {
             throw new InvalidArgumentException('The tag name in "_defaults" must be a non-empty string.');
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/PrototypeConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/PrototypeConfigurator.php
index 76e7829e8fe9..d80c8b13389f 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/PrototypeConfigurator.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/PrototypeConfigurator.php
@@ -49,7 +49,7 @@ public function __construct(ServicesConfigurator $parent, PhpFileLoader $loader,
         $definition->setAutowired($defaults->isAutowired());
         $definition->setAutoconfigured($defaults->isAutoconfigured());
         $definition->setBindings($defaults->getBindings());
-        $definition->setChanges(array());
+        $definition->setChanges([]);
 
         $this->loader = $loader;
         $this->resource = $resource;
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/ServicesConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/ServicesConfigurator.php
index c9673b6c7a73..e7677eb5e6dc 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/ServicesConfigurator.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/ServicesConfigurator.php
@@ -38,7 +38,7 @@ public function __construct(ContainerBuilder $container, PhpFileLoader $loader,
         $this->container = $container;
         $this->loader = $loader;
         $this->instanceof = &$instanceof;
-        $instanceof = array();
+        $instanceof = [];
     }
 
     /**
@@ -83,7 +83,7 @@ final public function set($id, $class = null)
         $definition->setAutowired($defaults->isAutowired());
         $definition->setAutoconfigured($defaults->isAutoconfigured());
         $definition->setBindings($defaults->getBindings());
-        $definition->setChanges(array());
+        $definition->setChanges([]);
 
         $configurator = new ServiceConfigurator($this->container, $this->instanceof, $allowParent, $this, $definition, $id, $defaults->getTags());
 
@@ -136,7 +136,7 @@ final public function get($id)
         $allowParent = !$this->defaults->getChanges() && empty($this->instanceof);
         $definition = $this->container->getDefinition($id);
 
-        return new ServiceConfigurator($this->container, $definition->getInstanceofConditionals(), $allowParent, $this, $definition, $id, array());
+        return new ServiceConfigurator($this->container, $definition->getInstanceofConditionals(), $allowParent, $this, $definition, $id, []);
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/CallTrait.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/CallTrait.php
index abc14e215559..8e6b17a19d28 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/CallTrait.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/CallTrait.php
@@ -25,7 +25,7 @@ trait CallTrait
      *
      * @throws InvalidArgumentException on empty $method param
      */
-    final public function call($method, array $arguments = array())
+    final public function call($method, array $arguments = [])
     {
         $this->definition->addMethodCall($method, static::processValue($arguments, true));
 
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/TagTrait.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/TagTrait.php
index c165b6503e79..d17339f88b69 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/TagTrait.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/TagTrait.php
@@ -23,7 +23,7 @@ trait TagTrait
      *
      * @return $this
      */
-    final public function tag($name, array $attributes = array())
+    final public function tag($name, array $attributes = [])
     {
         if (!\is_string($name) || '' === $name) {
             throw new InvalidArgumentException(sprintf('The tag name for service "%s" must be a non-empty string.', $this->id));
diff --git a/src/Symfony/Component/DependencyInjection/Loader/FileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/FileLoader.php
index d5e2327ed046..a428c6e35f6c 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/FileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/FileLoader.php
@@ -28,7 +28,7 @@ abstract class FileLoader extends BaseFileLoader
 {
     protected $container;
     protected $isLoadingInstanceof = false;
-    protected $instanceof = array();
+    protected $instanceof = [];
 
     public function __construct(ContainerBuilder $container, FileLocatorInterface $locator)
     {
@@ -57,8 +57,8 @@ public function registerClasses(Definition $prototype, $namespace, $resource, $e
         $classes = $this->findClasses($namespace, $resource, $exclude);
         // prepare for deep cloning
         $serializedPrototype = serialize($prototype);
-        $interfaces = array();
-        $singlyImplemented = array();
+        $interfaces = [];
+        $singlyImplemented = [];
 
         foreach ($classes as $class => $errorMessage) {
             if (interface_exists($class, false)) {
@@ -105,7 +105,7 @@ private function findClasses($namespace, $pattern, $excludePattern)
     {
         $parameterBag = $this->container->getParameterBag();
 
-        $excludePaths = array();
+        $excludePaths = [];
         $excludePrefix = null;
         if ($excludePattern) {
             $excludePattern = $parameterBag->unescapeValue($parameterBag->resolveValue($excludePattern));
@@ -120,7 +120,7 @@ private function findClasses($namespace, $pattern, $excludePattern)
         }
 
         $pattern = $parameterBag->unescapeValue($parameterBag->resolveValue($pattern));
-        $classes = array();
+        $classes = [];
         $extRegexp = \defined('HHVM_VERSION') ? '/\\.(?:php|hh)$/' : '/\\.php$/';
         $prefixLen = null;
         foreach ($this->glob($pattern, true, $resource) as $path => $info) {
diff --git a/src/Symfony/Component/DependencyInjection/Loader/IniFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/IniFileLoader.php
index 2ee9ea8ffce5..307a3eefbbe5 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/IniFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/IniFileLoader.php
@@ -32,7 +32,7 @@ public function load($resource, $type = null)
 
         // first pass to catch parsing errors
         $result = parse_ini_file($path, true);
-        if (false === $result || array() === $result) {
+        if (false === $result || [] === $result) {
             throw new InvalidArgumentException(sprintf('The "%s" file is not valid.', $resource));
         }
 
diff --git a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
index 4677a61ca4c1..1921c71570c3 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
@@ -63,7 +63,7 @@ public function load($resource, $type = null)
         try {
             $this->parseDefinitions($xml, $path, $defaults);
         } finally {
-            $this->instanceof = array();
+            $this->instanceof = [];
         }
     }
 
@@ -134,11 +134,11 @@ private function parseDefinitions(\DOMDocument $xml, $file, $defaults)
         }
         $this->setCurrentDir(\dirname($file));
 
-        $this->instanceof = array();
+        $this->instanceof = [];
         $this->isLoadingInstanceof = true;
         $instanceof = $xpath->query('//container:services/container:instanceof');
         foreach ($instanceof as $service) {
-            $this->setDefinition((string) $service->getAttribute('id'), $this->parseDefinition($service, $file, array()));
+            $this->setDefinition((string) $service->getAttribute('id'), $this->parseDefinition($service, $file, []));
         }
 
         $this->isLoadingInstanceof = false;
@@ -164,12 +164,12 @@ private function getServiceDefaults(\DOMDocument $xml, $file)
         $xpath->registerNamespace('container', self::NS);
 
         if (null === $defaultsNode = $xpath->query('//container:services/container:defaults')->item(0)) {
-            return array();
+            return [];
         }
-        $defaults = array(
+        $defaults = [
             'tags' => $this->getChildren($defaultsNode, 'tag'),
             'bind' => array_map(function ($v) { return new BoundArgument($v); }, $this->getArgumentsAsPhp($defaultsNode, 'bind', $file)),
-        );
+        ];
 
         foreach ($defaults['tags'] as $tag) {
             if ('' === $tag->getAttribute('name')) {
@@ -253,10 +253,10 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                 $definition->setAutoconfigured($defaults['autoconfigure']);
             }
 
-            $definition->setChanges(array());
+            $definition->setChanges([]);
         }
 
-        foreach (array('class', 'public', 'shared', 'synthetic', 'lazy', 'abstract') as $key) {
+        foreach (['class', 'public', 'shared', 'synthetic', 'lazy', 'abstract'] as $key) {
             if ($value = $service->getAttribute($key)) {
                 $method = 'set'.$key;
                 $definition->$method(XmlUtils::phpize($value));
@@ -297,7 +297,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                     $class = $factory->hasAttribute('class') ? $factory->getAttribute('class') : null;
                 }
 
-                $definition->setFactory(array($class, $factory->getAttribute('method')));
+                $definition->setFactory([$class, $factory->getAttribute('method')]);
             }
         }
 
@@ -312,7 +312,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                     $class = $configurator->getAttribute('class');
                 }
 
-                $definition->setConfigurator(array($class, $configurator->getAttribute('method')));
+                $definition->setConfigurator([$class, $configurator->getAttribute('method')]);
             }
         }
 
@@ -327,7 +327,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
         }
 
         foreach ($tags as $tag) {
-            $parameters = array();
+            $parameters = [];
             foreach ($tag->attributes as $name => $node) {
                 if ('name' === $name) {
                     continue;
@@ -381,7 +381,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
     private function parseFileToDOM($file)
     {
         try {
-            $dom = XmlUtils::loadFile($file, array($this, 'validateSchema'));
+            $dom = XmlUtils::loadFile($file, [$this, 'validateSchema']);
         } catch (\InvalidArgumentException $e) {
             throw new InvalidArgumentException(sprintf('Unable to parse file "%s".', $file), $e->getCode(), $e);
         }
@@ -400,7 +400,7 @@ private function parseFileToDOM($file)
      */
     private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
     {
-        $definitions = array();
+        $definitions = [];
         $count = 0;
         $suffix = '~'.ContainerBuilder::hash($file);
 
@@ -416,7 +416,7 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
                     $node->setAttribute('id', $id);
                     $node->setAttribute('service', $id);
 
-                    $definitions[$id] = array($services[0], $file, false);
+                    $definitions[$id] = [$services[0], $file, false];
                     $services[0]->setAttribute('id', $id);
 
                     // anonymous services are always private
@@ -434,14 +434,14 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
                 // give it a unique name
                 $id = sprintf('%d_%s', ++$count, preg_replace('/^.*\\\\/', '', $node->getAttribute('class')).$suffix);
                 $node->setAttribute('id', $id);
-                $definitions[$id] = array($node, $file, true);
+                $definitions[$id] = [$node, $file, true];
             }
         }
 
         // resolve definitions
         uksort($definitions, 'strnatcmp');
         foreach (array_reverse($definitions) as $id => list($domElement, $file, $wild)) {
-            if (null !== $definition = $this->parseDefinition($domElement, $file, $wild ? $defaults : array())) {
+            if (null !== $definition = $this->parseDefinition($domElement, $file, $wild ? $defaults : [])) {
                 $this->setDefinition($id, $definition);
             }
 
@@ -465,7 +465,7 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
      */
     private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase = true, $isChildDefinition = false)
     {
-        $arguments = array();
+        $arguments = [];
         foreach ($this->getChildren($node, $name) as $arg) {
             if ($arg->hasAttribute('name')) {
                 $arg->setAttribute('key', $arg->getAttribute('name'));
@@ -553,7 +553,7 @@ private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase =
      */
     private function getChildren(\DOMNode $node, $name)
     {
-        $children = array();
+        $children = [];
         foreach ($node->childNodes as $child) {
             if ($child instanceof \DOMElement && $child->localName === $name && self::NS === $child->namespaceURI) {
                 $children[] = $child;
@@ -574,7 +574,7 @@ private function getChildren(\DOMNode $node, $name)
      */
     public function validateSchema(\DOMDocument $dom)
     {
-        $schemaLocations = array('http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd'));
+        $schemaLocations = ['http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd')];
 
         if ($element = $dom->documentElement->getAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'schemaLocation')) {
             $items = preg_split('/\s+/', $element);
@@ -595,7 +595,7 @@ public function validateSchema(\DOMDocument $dom)
             }
         }
 
-        $tmpfiles = array();
+        $tmpfiles = [];
         $imports = '';
         foreach ($schemaLocations as $namespace => $location) {
             $parts = explode('/', $location);
@@ -650,7 +650,7 @@ public function validateSchema(\DOMDocument $dom)
     private function validateAlias(\DOMElement $alias, $file)
     {
         foreach ($alias->attributes as $name => $node) {
-            if (!\in_array($name, array('alias', 'id', 'public'))) {
+            if (!\in_array($name, ['alias', 'id', 'public'])) {
                 @trigger_error(sprintf('Using the attribute "%s" is deprecated for the service "%s" which is defined as an alias in "%s". Allowed attributes for service aliases are "alias", "id" and "public". The XmlFileLoader will raise an exception in Symfony 4.0, instead of silently ignoring unsupported attributes.', $name, $alias->getAttribute('id'), $file), E_USER_DEPRECATED);
             }
         }
@@ -699,7 +699,7 @@ private function loadFromExtensions(\DOMDocument $xml)
 
             $values = static::convertDomElementToArray($node);
             if (!\is_array($values)) {
-                $values = array();
+                $values = [];
             }
 
             $this->container->loadFromExtension($node->namespaceURI, $values);
diff --git a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
index 27899f220f04..dccbae9b7393 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
@@ -36,7 +36,7 @@
  */
 class YamlFileLoader extends FileLoader
 {
-    private static $serviceKeywords = array(
+    private static $serviceKeywords = [
         'alias' => 'alias',
         'parent' => 'parent',
         'class' => 'class',
@@ -60,9 +60,9 @@ class YamlFileLoader extends FileLoader
         'autowiring_types' => 'autowiring_types',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
-    private static $prototypeKeywords = array(
+    private static $prototypeKeywords = [
         'resource' => 'resource',
         'namespace' => 'namespace',
         'exclude' => 'exclude',
@@ -81,9 +81,9 @@ class YamlFileLoader extends FileLoader
         'autowire' => 'autowire',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
-    private static $instanceofKeywords = array(
+    private static $instanceofKeywords = [
         'shared' => 'shared',
         'lazy' => 'lazy',
         'public' => 'public',
@@ -92,15 +92,15 @@ class YamlFileLoader extends FileLoader
         'calls' => 'calls',
         'tags' => 'tags',
         'autowire' => 'autowire',
-    );
+    ];
 
-    private static $defaultsKeywords = array(
+    private static $defaultsKeywords = [
         'public' => 'public',
         'tags' => 'tags',
         'autowire' => 'autowire',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
     private $yamlParser;
 
@@ -147,7 +147,7 @@ public function load($resource, $type = null)
         try {
             $this->parseDefinitions($content, $path);
         } finally {
-            $this->instanceof = array();
+            $this->instanceof = [];
         }
     }
 
@@ -160,11 +160,11 @@ public function supports($resource, $type = null)
             return false;
         }
 
-        if (null === $type && \in_array(pathinfo($resource, PATHINFO_EXTENSION), array('yaml', 'yml'), true)) {
+        if (null === $type && \in_array(pathinfo($resource, PATHINFO_EXTENSION), ['yaml', 'yml'], true)) {
             return true;
         }
 
-        return \in_array($type, array('yaml', 'yml'), true);
+        return \in_array($type, ['yaml', 'yml'], true);
     }
 
     /**
@@ -186,7 +186,7 @@ private function parseImports(array $content, $file)
         $defaultDirectory = \dirname($file);
         foreach ($content['imports'] as $import) {
             if (!\is_array($import)) {
-                $import = array('resource' => $import);
+                $import = ['resource' => $import];
             }
             if (!isset($import['resource'])) {
                 throw new InvalidArgumentException(sprintf('An import should provide a resource in %s. Check your YAML syntax.', $file));
@@ -220,7 +220,7 @@ private function parseDefinitions(array $content, $file)
             if (!\is_array($instanceof)) {
                 throw new InvalidArgumentException(sprintf('Service "_instanceof" key must be an array, "%s" given in "%s".', \gettype($instanceof), $file));
             }
-            $this->instanceof = array();
+            $this->instanceof = [];
             $this->isLoadingInstanceof = true;
             foreach ($instanceof as $id => $service) {
                 if (!$service || !\is_array($service)) {
@@ -229,7 +229,7 @@ private function parseDefinitions(array $content, $file)
                 if (\is_string($service) && 0 === strpos($service, '@')) {
                     throw new InvalidArgumentException(sprintf('Type definition "%s" cannot be an alias within "_instanceof" in %s. Check your YAML syntax.', $id, $file));
                 }
-                $this->parseDefinition($id, $service, $file, array());
+                $this->parseDefinition($id, $service, $file, []);
             }
         }
 
@@ -251,7 +251,7 @@ private function parseDefinitions(array $content, $file)
     private function parseDefaults(array &$content, $file)
     {
         if (!array_key_exists('_defaults', $content['services'])) {
-            return array();
+            return [];
         }
         $defaults = $content['services']['_defaults'];
         unset($content['services']['_defaults']);
@@ -273,7 +273,7 @@ private function parseDefaults(array &$content, $file)
 
             foreach ($tags as $tag) {
                 if (!\is_array($tag)) {
-                    $tag = array('name' => $tag);
+                    $tag = ['name' => $tag];
                 }
 
                 if (!isset($tag['name'])) {
@@ -346,11 +346,11 @@ private function parseDefinition($id, $service, $file, array $defaults)
         }
 
         if (\is_array($service) && $this->isUsingShortSyntax($service)) {
-            $service = array('arguments' => $service);
+            $service = ['arguments' => $service];
         }
 
         if (null === $service) {
-            $service = array();
+            $service = [];
         }
 
         if (!\is_array($service)) {
@@ -368,7 +368,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
             }
 
             foreach ($service as $key => $value) {
-                if (!\in_array($key, array('alias', 'public'))) {
+                if (!\in_array($key, ['alias', 'public'])) {
                     @trigger_error(sprintf('The configuration key "%s" is unsupported for the service "%s" which is defined as an alias in "%s". Allowed configuration keys for service aliases are "alias" and "public". The YamlFileLoader will raise an exception in Symfony 4.0, instead of silently ignoring unsupported attributes.', $key, $id, $file), E_USER_DEPRECATED);
                 }
             }
@@ -411,7 +411,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
                 $definition->setAutoconfigured($defaults['autoconfigure']);
             }
 
-            $definition->setChanges(array());
+            $definition->setChanges([]);
         }
 
         if (isset($service['class'])) {
@@ -470,10 +470,10 @@ private function parseDefinition($id, $service, $file, array $defaults)
             foreach ($service['calls'] as $call) {
                 if (isset($call['method'])) {
                     $method = $call['method'];
-                    $args = isset($call['arguments']) ? $this->resolveServices($call['arguments'], $file) : array();
+                    $args = isset($call['arguments']) ? $this->resolveServices($call['arguments'], $file) : [];
                 } else {
                     $method = $call[0];
-                    $args = isset($call[1]) ? $this->resolveServices($call[1], $file) : array();
+                    $args = isset($call[1]) ? $this->resolveServices($call[1], $file) : [];
                 }
 
                 if (!\is_array($args)) {
@@ -483,7 +483,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
             }
         }
 
-        $tags = isset($service['tags']) ? $service['tags'] : array();
+        $tags = isset($service['tags']) ? $service['tags'] : [];
         if (!\is_array($tags)) {
             throw new InvalidArgumentException(sprintf('Parameter "tags" must be an array for service "%s" in %s. Check your YAML syntax.', $id, $file));
         }
@@ -494,7 +494,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
 
         foreach ($tags as $tag) {
             if (!\is_array($tag)) {
-                $tag = array('name' => $tag);
+                $tag = ['name' => $tag];
             }
 
             if (!isset($tag['name'])) {
@@ -550,7 +550,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
 
         if (isset($defaults['bind']) || isset($service['bind'])) {
             // deep clone, to avoid multiple process of the same instance in the passes
-            $bindings = isset($defaults['bind']) ? unserialize(serialize($defaults['bind'])) : array();
+            $bindings = isset($defaults['bind']) ? unserialize(serialize($defaults['bind'])) : [];
 
             if (isset($service['bind'])) {
                 if (!\is_array($service['bind'])) {
@@ -609,7 +609,7 @@ private function parseCallable($callable, $parameter, $id, $file)
             if (false !== strpos($callable, ':') && false === strpos($callable, '::')) {
                 $parts = explode(':', $callable);
 
-                return array($this->resolveServices('@'.$parts[0], $file), $parts[1]);
+                return [$this->resolveServices('@'.$parts[0], $file), $parts[1]];
             }
 
             return $callable;
@@ -617,7 +617,7 @@ private function parseCallable($callable, $parameter, $id, $file)
 
         if (\is_array($callable)) {
             if (isset($callable[0]) && isset($callable[1])) {
-                return array($this->resolveServices($callable[0], $file), $callable[1]);
+                return [$this->resolveServices($callable[0], $file), $callable[1]];
             }
 
             if ('factory' === $parameter && isset($callable[1]) && null === $callable[0]) {
@@ -695,7 +695,7 @@ private function validate($content, $file)
         }
 
         foreach ($content as $namespace => $data) {
-            if (\in_array($namespace, array('imports', 'parameters', 'services'))) {
+            if (\in_array($namespace, ['imports', 'parameters', 'services'])) {
                 continue;
             }
 
@@ -747,10 +747,10 @@ private function resolveServices($value, $file, $isParameter = false)
                 $isLoadingInstanceof = $this->isLoadingInstanceof;
                 $this->isLoadingInstanceof = false;
                 $instanceof = $this->instanceof;
-                $this->instanceof = array();
+                $this->instanceof = [];
 
                 $id = sprintf('%d_%s', ++$this->anonymousServicesCount, preg_replace('/^.*\\\\/', '', isset($argument['class']) ? $argument['class'] : '').$this->anonymousServicesSuffix);
-                $this->parseDefinition($id, $argument, $file, array());
+                $this->parseDefinition($id, $argument, $file, []);
 
                 if (!$this->container->hasDefinition($id)) {
                     throw new InvalidArgumentException(sprintf('Creating an alias using the tag "!service" is not allowed in "%s".', $file));
@@ -811,12 +811,12 @@ private function resolveServices($value, $file, $isParameter = false)
     private function loadFromExtensions(array $content)
     {
         foreach ($content as $namespace => $values) {
-            if (\in_array($namespace, array('imports', 'parameters', 'services'))) {
+            if (\in_array($namespace, ['imports', 'parameters', 'services'])) {
                 continue;
             }
 
             if (!\is_array($values) && null !== $values) {
-                $values = array();
+                $values = [];
             }
 
             $this->container->loadFromExtension($namespace, $values);
diff --git a/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php b/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
index 12bc7612f9f0..e453a774e1e6 100644
--- a/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
+++ b/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
@@ -19,8 +19,8 @@
  */
 class EnvPlaceholderParameterBag extends ParameterBag
 {
-    private $envPlaceholders = array();
-    private $providedTypes = array();
+    private $envPlaceholders = [];
+    private $providedTypes = [];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/DependencyInjection/ParameterBag/FrozenParameterBag.php b/src/Symfony/Component/DependencyInjection/ParameterBag/FrozenParameterBag.php
index ad65ad960f52..a5199937e233 100644
--- a/src/Symfony/Component/DependencyInjection/ParameterBag/FrozenParameterBag.php
+++ b/src/Symfony/Component/DependencyInjection/ParameterBag/FrozenParameterBag.php
@@ -28,7 +28,7 @@ class FrozenParameterBag extends ParameterBag
      *
      * @param array $parameters An array of parameters
      */
-    public function __construct(array $parameters = array())
+    public function __construct(array $parameters = [])
     {
         $this->parameters = $parameters;
         $this->resolved = true;
diff --git a/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php b/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
index e06fd344c05a..8a86f94170a7 100644
--- a/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
+++ b/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
@@ -22,15 +22,15 @@
  */
 class ParameterBag implements ParameterBagInterface
 {
-    protected $parameters = array();
+    protected $parameters = [];
     protected $resolved = false;
 
-    private $normalizedNames = array();
+    private $normalizedNames = [];
 
     /**
      * @param array $parameters An array of parameters
      */
-    public function __construct(array $parameters = array())
+    public function __construct(array $parameters = [])
     {
         $this->add($parameters);
     }
@@ -40,7 +40,7 @@ public function __construct(array $parameters = array())
      */
     public function clear()
     {
-        $this->parameters = array();
+        $this->parameters = [];
     }
 
     /**
@@ -75,7 +75,7 @@ public function get($name)
                 throw new ParameterNotFoundException($name);
             }
 
-            $alternatives = array();
+            $alternatives = [];
             foreach ($this->parameters as $key => $parameterValue) {
                 $lev = levenshtein($name, $key);
                 if ($lev <= \strlen($name) / 3 || false !== strpos($key, $name)) {
@@ -143,7 +143,7 @@ public function resolve()
             return;
         }
 
-        $parameters = array();
+        $parameters = [];
         foreach ($this->parameters as $key => $value) {
             try {
                 $value = $this->resolveValue($value);
@@ -171,10 +171,10 @@ public function resolve()
      * @throws ParameterCircularReferenceException if a circular reference if detected
      * @throws RuntimeException                    when a given parameter has a type problem
      */
-    public function resolveValue($value, array $resolving = array())
+    public function resolveValue($value, array $resolving = [])
     {
         if (\is_array($value)) {
-            $args = array();
+            $args = [];
             foreach ($value as $k => $v) {
                 $args[\is_string($k) ? $this->resolveValue($k, $resolving) : $k] = $this->resolveValue($v, $resolving);
             }
@@ -201,7 +201,7 @@ public function resolveValue($value, array $resolving = array())
      * @throws ParameterCircularReferenceException if a circular reference if detected
      * @throws RuntimeException                    when a given parameter has a type problem
      */
-    public function resolveString($value, array $resolving = array())
+    public function resolveString($value, array $resolving = [])
     {
         // we do this to deal with non string values (Boolean, integer, ...)
         // as the preg_replace_callback throw an exception when trying
@@ -259,7 +259,7 @@ public function escapeValue($value)
         }
 
         if (\is_array($value)) {
-            $result = array();
+            $result = [];
             foreach ($value as $k => $v) {
                 $result[$k] = $this->escapeValue($v);
             }
@@ -280,7 +280,7 @@ public function unescapeValue($value)
         }
 
         if (\is_array($value)) {
-            $result = array();
+            $result = [];
             foreach ($value as $k => $v) {
                 $result[$k] = $this->unescapeValue($v);
             }
diff --git a/src/Symfony/Component/DependencyInjection/ServiceLocator.php b/src/Symfony/Component/DependencyInjection/ServiceLocator.php
index 10c7c9eb65de..a4f5bf99453d 100644
--- a/src/Symfony/Component/DependencyInjection/ServiceLocator.php
+++ b/src/Symfony/Component/DependencyInjection/ServiceLocator.php
@@ -22,7 +22,7 @@
 class ServiceLocator implements PsrContainerInterface
 {
     private $factories;
-    private $loading = array();
+    private $loading = [];
     private $externalId;
     private $container;
 
@@ -48,7 +48,7 @@ public function has($id)
     public function get($id)
     {
         if (!isset($this->factories[$id])) {
-            throw new ServiceNotFoundException($id, end($this->loading) ?: null, null, array(), $this->createServiceNotFoundMessage($id));
+            throw new ServiceNotFoundException($id, end($this->loading) ?: null, null, [], $this->createServiceNotFoundMessage($id));
         }
 
         if (isset($this->loading[$id])) {
@@ -94,7 +94,7 @@ private function createServiceNotFoundMessage($id)
         $class = isset($class[2]['object']) ? \get_class($class[2]['object']) : null;
         $externalId = $this->externalId ?: $class;
 
-        $msg = array();
+        $msg = [];
         $msg[] = sprintf('Service "%s" not found:', $id);
 
         if (!$this->container) {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ChildDefinitionTest.php b/src/Symfony/Component/DependencyInjection/Tests/ChildDefinitionTest.php
index a941b960746b..cbae0eaaaa9e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ChildDefinitionTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ChildDefinitionTest.php
@@ -22,7 +22,7 @@ public function testConstructor()
         $def = new ChildDefinition('foo');
 
         $this->assertSame('foo', $def->getParent());
-        $this->assertSame(array(), $def->getChanges());
+        $this->assertSame([], $def->getChanges());
     }
 
     /**
@@ -38,17 +38,17 @@ public function testSetProperty($property, $changeKey)
         $this->assertNull($def->$getter());
         $this->assertSame($def, $def->$setter('foo'));
         $this->assertSame('foo', $def->$getter());
-        $this->assertSame(array($changeKey => true), $def->getChanges());
+        $this->assertSame([$changeKey => true], $def->getChanges());
     }
 
     public function getPropertyTests()
     {
-        return array(
-            array('class', 'class'),
-            array('factory', 'factory'),
-            array('configurator', 'configurator'),
-            array('file', 'file'),
-        );
+        return [
+            ['class', 'class'],
+            ['factory', 'factory'],
+            ['configurator', 'configurator'],
+            ['file', 'file'],
+        ];
     }
 
     public function testSetPublic()
@@ -58,7 +58,7 @@ public function testSetPublic()
         $this->assertTrue($def->isPublic());
         $this->assertSame($def, $def->setPublic(false));
         $this->assertFalse($def->isPublic());
-        $this->assertSame(array('public' => true), $def->getChanges());
+        $this->assertSame(['public' => true], $def->getChanges());
     }
 
     public function testSetLazy()
@@ -68,7 +68,7 @@ public function testSetLazy()
         $this->assertFalse($def->isLazy());
         $this->assertSame($def, $def->setLazy(false));
         $this->assertFalse($def->isLazy());
-        $this->assertSame(array('lazy' => true), $def->getChanges());
+        $this->assertSame(['lazy' => true], $def->getChanges());
     }
 
     public function testSetAutowired()
@@ -78,16 +78,16 @@ public function testSetAutowired()
         $this->assertFalse($def->isAutowired());
         $this->assertSame($def, $def->setAutowired(true));
         $this->assertTrue($def->isAutowired());
-        $this->assertSame(array('autowired' => true), $def->getChanges());
+        $this->assertSame(['autowired' => true], $def->getChanges());
     }
 
     public function testSetArgument()
     {
         $def = new ChildDefinition('foo');
 
-        $this->assertSame(array(), $def->getArguments());
+        $this->assertSame([], $def->getArguments());
         $this->assertSame($def, $def->replaceArgument(0, 'foo'));
-        $this->assertSame(array('index_0' => 'foo'), $def->getArguments());
+        $this->assertSame(['index_0' => 'foo'], $def->getArguments());
     }
 
     /**
@@ -104,7 +104,7 @@ public function testReplaceArgument()
     {
         $def = new ChildDefinition('foo');
 
-        $def->setArguments(array(0 => 'foo', 1 => 'bar'));
+        $def->setArguments([0 => 'foo', 1 => 'bar']);
         $this->assertSame('foo', $def->getArgument(0));
         $this->assertSame('bar', $def->getArgument(1));
 
@@ -112,11 +112,11 @@ public function testReplaceArgument()
         $this->assertSame('foo', $def->getArgument(0));
         $this->assertSame('baz', $def->getArgument(1));
 
-        $this->assertSame(array(0 => 'foo', 1 => 'bar', 'index_1' => 'baz'), $def->getArguments());
+        $this->assertSame([0 => 'foo', 1 => 'bar', 'index_1' => 'baz'], $def->getArguments());
 
         $this->assertSame($def, $def->replaceArgument('$bar', 'val'));
         $this->assertSame('val', $def->getArgument('$bar'));
-        $this->assertSame(array(0 => 'foo', 1 => 'bar', 'index_1' => 'baz', '$bar' => 'val'), $def->getArguments());
+        $this->assertSame([0 => 'foo', 1 => 'bar', 'index_1' => 'baz', '$bar' => 'val'], $def->getArguments());
     }
 
     /**
@@ -126,7 +126,7 @@ public function testGetArgumentShouldCheckBounds()
     {
         $def = new ChildDefinition('foo');
 
-        $def->setArguments(array(0 => 'foo'));
+        $def->setArguments([0 => 'foo']);
         $def->replaceArgument(0, 'foo');
 
         $def->getArgument(1);
@@ -152,6 +152,6 @@ public function testCannotCallSetAutoconfigured()
     public function testCannotCallSetInstanceofConditionals()
     {
         $def = new ChildDefinition('foo');
-        $def->setInstanceofConditionals(array('Foo' => new ChildDefinition('')));
+        $def->setInstanceofConditionals(['Foo' => new ChildDefinition('')]);
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php
index 8d44fad8611e..0bd94a3e609c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php
@@ -32,7 +32,7 @@ public function testProcess()
 
         $b = $container
             ->register('b')
-            ->addMethodCall('setA', array($ref2 = new Reference('a')))
+            ->addMethodCall('setA', [$ref2 = new Reference('a')])
         ;
 
         $c = $container
@@ -48,7 +48,7 @@ public function testProcess()
 
         $e = $container
             ->register('e')
-            ->setConfigurator(array($ref6 = new Reference('b'), 'methodName'))
+            ->setConfigurator([$ref6 = new Reference('b'), 'methodName'])
         ;
 
         $graph = $this->process($container);
@@ -94,7 +94,7 @@ public function testProcessMarksEdgesLazyWhenReferencedFromIteratorArgument()
         $container
             ->register('c')
             ->addArgument($ref1 = new Reference('a'))
-            ->addArgument(new IteratorArgument(array($ref2 = new Reference('b'))))
+            ->addArgument(new IteratorArgument([$ref2 = new Reference('b')]))
         ;
 
         $graph = $this->process($container);
@@ -119,7 +119,7 @@ public function testProcessDetectsReferencesFromInlinedDefinitions()
 
         $container
             ->register('b')
-            ->addArgument(new Definition(null, array($ref = new Reference('a'))))
+            ->addArgument(new Definition(null, [$ref = new Reference('a')]))
         ;
 
         $graph = $this->process($container);
@@ -138,7 +138,7 @@ public function testProcessDetectsReferencesFromIteratorArguments()
 
         $container
             ->register('b')
-            ->addArgument(new IteratorArgument(array($ref = new Reference('a'))))
+            ->addArgument(new IteratorArgument([$ref = new Reference('a')]))
         ;
 
         $graph = $this->process($container);
@@ -156,7 +156,7 @@ public function testProcessDetectsReferencesFromInlinedFactoryDefinitions()
         ;
 
         $factory = new Definition();
-        $factory->setFactory(array(new Reference('a'), 'a'));
+        $factory->setFactory([new Reference('a'), 'a']);
 
         $container
             ->register('b')
@@ -178,8 +178,8 @@ public function testProcessDoesNotSaveDuplicateReferences()
         ;
         $container
             ->register('b')
-            ->addArgument(new Definition(null, array($ref1 = new Reference('a'))))
-            ->addArgument(new Definition(null, array($ref2 = new Reference('a'))))
+            ->addArgument(new Definition(null, [$ref1 = new Reference('a')]))
+            ->addArgument(new Definition(null, [$ref2 = new Reference('a')]))
         ;
 
         $graph = $this->process($container);
@@ -193,11 +193,11 @@ public function testProcessDetectsFactoryReferences()
 
         $container
             ->register('foo', 'stdClass')
-            ->setFactory(array('stdClass', 'getInstance'));
+            ->setFactory(['stdClass', 'getInstance']);
 
         $container
             ->register('bar', 'stdClass')
-            ->setFactory(array(new Reference('foo'), 'getInstance'));
+            ->setFactory([new Reference('foo'), 'getInstance']);
 
         $graph = $this->process($container);
 
@@ -207,7 +207,7 @@ public function testProcessDetectsFactoryReferences()
 
     protected function process(ContainerBuilder $container)
     {
-        $pass = new RepeatedPass(array(new AnalyzeServiceReferencesPass()));
+        $pass = new RepeatedPass([new AnalyzeServiceReferencesPass()]);
         $pass->process($container);
 
         return $container->getCompiler()->getServiceReferenceGraph();
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutoAliasServicePassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutoAliasServicePassTest.php
index f76001a11abf..d029636a7cc5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutoAliasServicePassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutoAliasServicePassTest.php
@@ -25,7 +25,7 @@ public function testProcessWithMissingParameter()
         $container = new ContainerBuilder();
 
         $container->register('example')
-            ->addTag('auto_alias', array('format' => '%non_existing%.example'));
+            ->addTag('auto_alias', ['format' => '%non_existing%.example']);
 
         $pass = new AutoAliasServicePass();
         $pass->process($container);
@@ -39,7 +39,7 @@ public function testProcessWithMissingFormat()
         $container = new ContainerBuilder();
 
         $container->register('example')
-            ->addTag('auto_alias', array());
+            ->addTag('auto_alias', []);
         $container->setParameter('existing', 'mysql');
 
         $pass = new AutoAliasServicePass();
@@ -51,7 +51,7 @@ public function testProcessWithNonExistingAlias()
         $container = new ContainerBuilder();
 
         $container->register('example', 'Symfony\Component\DependencyInjection\Tests\Compiler\ServiceClassDefault')
-            ->addTag('auto_alias', array('format' => '%existing%.example'));
+            ->addTag('auto_alias', ['format' => '%existing%.example']);
         $container->setParameter('existing', 'mysql');
 
         $pass = new AutoAliasServicePass();
@@ -65,7 +65,7 @@ public function testProcessWithExistingAlias()
         $container = new ContainerBuilder();
 
         $container->register('example', 'Symfony\Component\DependencyInjection\Tests\Compiler\ServiceClassDefault')
-            ->addTag('auto_alias', array('format' => '%existing%.example'));
+            ->addTag('auto_alias', ['format' => '%existing%.example']);
 
         $container->register('mysql.example', 'Symfony\Component\DependencyInjection\Tests\Compiler\ServiceClassMysql');
         $container->setParameter('existing', 'mysql');
@@ -83,7 +83,7 @@ public function testProcessWithManualAlias()
         $container = new ContainerBuilder();
 
         $container->register('example', 'Symfony\Component\DependencyInjection\Tests\Compiler\ServiceClassDefault')
-            ->addTag('auto_alias', array('format' => '%existing%.example'));
+            ->addTag('auto_alias', ['format' => '%existing%.example']);
 
         $container->register('mysql.example', 'Symfony\Component\DependencyInjection\Tests\Compiler\ServiceClassMysql');
         $container->register('mariadb.example', 'Symfony\Component\DependencyInjection\Tests\Compiler\ServiceClassMariaDb');
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowireExceptionPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowireExceptionPassTest.php
index a9c3445cefdd..5bcb1234223a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowireExceptionPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowireExceptionPassTest.php
@@ -31,13 +31,13 @@ public function testThrowsException()
         $autowireException = new AutowiringFailedException('foo_service_id', 'An autowiring exception message');
         $autowirePass->expects($this->any())
             ->method('getAutowiringExceptions')
-            ->will($this->returnValue(array($autowireException)));
+            ->will($this->returnValue([$autowireException]));
 
         $inlinePass = $this->getMockBuilder(InlineServiceDefinitionsPass::class)
             ->getMock();
         $inlinePass->expects($this->any())
             ->method('getInlinedServiceIds')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $container = new ContainerBuilder();
         $container->register('foo_service_id');
@@ -60,18 +60,18 @@ public function testThrowExceptionIfServiceInlined()
         $autowireException = new AutowiringFailedException('a_service', 'An autowiring exception message');
         $autowirePass->expects($this->any())
             ->method('getAutowiringExceptions')
-            ->will($this->returnValue(array($autowireException)));
+            ->will($this->returnValue([$autowireException]));
 
         $inlinePass = $this->getMockBuilder(InlineServiceDefinitionsPass::class)
             ->getMock();
         $inlinePass->expects($this->any())
             ->method('getInlinedServiceIds')
-            ->will($this->returnValue(array(
+            ->will($this->returnValue([
                 // a_service inlined into b_service
-                'a_service' => array('b_service'),
+                'a_service' => ['b_service'],
                 // b_service inlined into c_service
-                'b_service' => array('c_service'),
-            )));
+                'b_service' => ['c_service'],
+            ]));
 
         $container = new ContainerBuilder();
         // ONLY register c_service in the final container
@@ -95,18 +95,18 @@ public function testDoNotThrowExceptionIfServiceInlinedButRemoved()
         $autowireException = new AutowiringFailedException('a_service', 'An autowiring exception message');
         $autowirePass->expects($this->any())
             ->method('getAutowiringExceptions')
-            ->will($this->returnValue(array($autowireException)));
+            ->will($this->returnValue([$autowireException]));
 
         $inlinePass = $this->getMockBuilder(InlineServiceDefinitionsPass::class)
             ->getMock();
         $inlinePass->expects($this->any())
             ->method('getInlinedServiceIds')
-            ->will($this->returnValue(array(
+            ->will($this->returnValue([
                 // a_service inlined into b_service
-                'a_service' => array('b_service'),
+                'a_service' => ['b_service'],
                 // b_service inlined into c_service
-                'b_service' => array('c_service'),
-            )));
+                'b_service' => ['c_service'],
+            ]));
 
         // do NOT register c_service in the container
         $container = new ContainerBuilder();
@@ -126,13 +126,13 @@ public function testNoExceptionIfServiceRemoved()
         $autowireException = new AutowiringFailedException('non_existent_service');
         $autowirePass->expects($this->any())
             ->method('getAutowiringExceptions')
-            ->will($this->returnValue(array($autowireException)));
+            ->will($this->returnValue([$autowireException]));
 
         $inlinePass = $this->getMockBuilder(InlineServiceDefinitionsPass::class)
             ->getMock();
         $inlinePass->expects($this->any())
             ->method('getInlinedServiceIds')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $container = new ContainerBuilder();
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
index a21687723771..6bd49fa5c6f8 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
@@ -434,22 +434,22 @@ public function testSomeSpecificArgumentsAreSet()
             ->setAutowired(true)
             // set the 2nd (index 1) argument only: autowire the first and third
             // args are: A, Foo, Dunglas
-            ->setArguments(array(
+            ->setArguments([
                 1 => new Reference('foo'),
-                3 => array('bar'),
-            ));
+                3 => ['bar'],
+            ]);
 
         (new ResolveClassPass())->process($container);
         (new AutowirePass())->process($container);
 
         $definition = $container->getDefinition('multiple');
         $this->assertEquals(
-            array(
+            [
                 new TypedReference(A::class, A::class, MultipleArguments::class),
                 new Reference('foo'),
                 new TypedReference(Dunglas::class, Dunglas::class, MultipleArguments::class),
-                array('bar'),
-            ),
+                ['bar'],
+            ],
             $definition->getArguments()
         );
     }
@@ -465,7 +465,7 @@ public function testScalarArgsCannotBeAutowired()
         $container->register(A::class);
         $container->register(Dunglas::class);
         $container->register('arg_no_type_hint', __NAMESPACE__.'\MultipleArguments')
-            ->setArguments(array(1 => 'foo'))
+            ->setArguments([1 => 'foo'])
             ->setAutowired(true);
 
         (new ResolveClassPass())->process($container);
@@ -518,12 +518,12 @@ public function testOptionalScalarArgsDontMessUpOrder()
 
         $definition = $container->getDefinition('with_optional_scalar');
         $this->assertEquals(
-            array(
+            [
                 new TypedReference(A::class, A::class, MultipleArgumentsOptionalScalar::class),
                 // use the default value
                 'default_val',
                 new TypedReference(Lille::class, Lille::class),
-            ),
+            ],
             $definition->getArguments()
         );
     }
@@ -542,10 +542,10 @@ public function testOptionalScalarArgsNotPassedIfLast()
 
         $definition = $container->getDefinition('with_optional_scalar_last');
         $this->assertEquals(
-            array(
+            [
                 new TypedReference(A::class, A::class, MultipleArgumentsOptionalScalarLast::class),
                 new TypedReference(Lille::class, Lille::class, MultipleArgumentsOptionalScalarLast::class),
-            ),
+            ],
             $definition->getArguments()
         );
     }
@@ -562,7 +562,7 @@ public function testOptionalArgsNoRequiredForCoreClasses()
 
         $definition = $container->getDefinition('foo');
         $this->assertEquals(
-            array('foo.txt'),
+            ['foo.txt'],
             $definition->getArguments()
         );
     }
@@ -579,7 +579,7 @@ public function testSetterInjection()
         $container
             ->register('setter_injection', SetterInjection::class)
             ->setAutowired(true)
-            ->addMethodCall('setWithCallsConfigured', array('manual_arg1', 'manual_arg2'))
+            ->addMethodCall('setWithCallsConfigured', ['manual_arg1', 'manual_arg2'])
         ;
 
         (new ResolveClassPass())->process($container);
@@ -589,18 +589,18 @@ public function testSetterInjection()
         $methodCalls = $container->getDefinition('setter_injection')->getMethodCalls();
 
         $this->assertEquals(
-            array('setWithCallsConfigured', 'setFoo', 'setDependencies', 'setChildMethodWithoutDocBlock'),
+            ['setWithCallsConfigured', 'setFoo', 'setDependencies', 'setChildMethodWithoutDocBlock'],
             array_column($methodCalls, 0)
         );
 
         // test setWithCallsConfigured args
         $this->assertEquals(
-            array('manual_arg1', 'manual_arg2'),
+            ['manual_arg1', 'manual_arg2'],
             $methodCalls[0][1]
         );
         // test setFoo args
         $this->assertEquals(
-            array(new TypedReference(Foo::class, Foo::class, SetterInjection::class)),
+            [new TypedReference(Foo::class, Foo::class, SetterInjection::class)],
             $methodCalls[1][1]
         );
     }
@@ -616,7 +616,7 @@ public function testExplicitMethodInjection()
         $container
             ->register('setter_injection', SetterInjection::class)
             ->setAutowired(true)
-            ->addMethodCall('notASetter', array())
+            ->addMethodCall('notASetter', [])
         ;
 
         (new ResolveClassPass())->process($container);
@@ -626,11 +626,11 @@ public function testExplicitMethodInjection()
         $methodCalls = $container->getDefinition('setter_injection')->getMethodCalls();
 
         $this->assertEquals(
-            array('notASetter', 'setFoo', 'setDependencies', 'setWithCallsConfigured', 'setChildMethodWithoutDocBlock'),
+            ['notASetter', 'setFoo', 'setDependencies', 'setWithCallsConfigured', 'setChildMethodWithoutDocBlock'],
             array_column($methodCalls, 0)
         );
         $this->assertEquals(
-            array(new TypedReference(A::class, A::class, SetterInjection::class)),
+            [new TypedReference(A::class, A::class, SetterInjection::class)],
             $methodCalls[0][1]
         );
     }
@@ -645,7 +645,7 @@ public function testTypedReference()
 
         $container
             ->register('bar', Bar::class)
-            ->setProperty('a', array(new TypedReference(A::class, A::class, Bar::class)))
+            ->setProperty('a', [new TypedReference(A::class, A::class, Bar::class)])
         ;
 
         $pass = new AutowirePass();
@@ -682,10 +682,10 @@ public function testCreateResourceForClass($className, $isEqual)
 
     public function getCreateResourceTests()
     {
-        return array(
-            array('IdenticalClassResource', true),
-            array('ClassChangedConstructorArgs', false),
-        );
+        return [
+            ['IdenticalClassResource', true],
+            ['ClassChangedConstructorArgs', false],
+        ];
     }
 
     public function testIgnoreServiceWithClassNotExisting()
@@ -773,12 +773,12 @@ public function testEmptyStringIsKept()
         $container->register(Lille::class);
         $container->register('foo', __NAMESPACE__.'\MultipleArgumentsOptionalScalar')
             ->setAutowired(true)
-            ->setArguments(array('', ''));
+            ->setArguments(['', '']);
 
         (new ResolveClassPass())->process($container);
         (new AutowirePass())->process($container);
 
-        $this->assertEquals(array(new TypedReference(A::class, A::class, MultipleArgumentsOptionalScalar::class), '', new TypedReference(Lille::class, Lille::class)), $container->getDefinition('foo')->getArguments());
+        $this->assertEquals([new TypedReference(A::class, A::class, MultipleArgumentsOptionalScalar::class), '', new TypedReference(Lille::class, Lille::class)], $container->getDefinition('foo')->getArguments());
     }
 
     public function testWithFactory()
@@ -787,13 +787,13 @@ public function testWithFactory()
 
         $container->register(Foo::class);
         $definition = $container->register('a', A::class)
-            ->setFactory(array(A::class, 'create'))
+            ->setFactory([A::class, 'create'])
             ->setAutowired(true);
 
         (new ResolveClassPass())->process($container);
         (new AutowirePass())->process($container);
 
-        $this->assertEquals(array(new TypedReference(Foo::class, Foo::class, A::class)), $definition->getArguments());
+        $this->assertEquals([new TypedReference(Foo::class, Foo::class, A::class)], $definition->getArguments());
     }
 
     /**
@@ -805,14 +805,14 @@ public function testNotWireableCalls($method, $expectedMsg)
         $container = new ContainerBuilder();
 
         $foo = $container->register('foo', NotWireable::class)->setAutowired(true)
-            ->addMethodCall('setBar', array())
-            ->addMethodCall('setOptionalNotAutowireable', array())
-            ->addMethodCall('setOptionalNoTypeHint', array())
-            ->addMethodCall('setOptionalArgNoAutowireable', array())
+            ->addMethodCall('setBar', [])
+            ->addMethodCall('setOptionalNotAutowireable', [])
+            ->addMethodCall('setOptionalNoTypeHint', [])
+            ->addMethodCall('setOptionalArgNoAutowireable', [])
         ;
 
         if ($method) {
-            $foo->addMethodCall($method, array());
+            $foo->addMethodCall($method, []);
         }
 
         if (method_exists($this, 'expectException')) {
@@ -829,11 +829,11 @@ public function testNotWireableCalls($method, $expectedMsg)
 
     public function provideNotWireableCalls()
     {
-        return array(
-            array('setNotAutowireable', 'Cannot autowire service "foo": argument "$n" of method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setNotAutowireable()" has type "Symfony\Component\DependencyInjection\Tests\Compiler\NotARealClass" but this class was not found.'),
-            array('setDifferentNamespace', 'Cannot autowire service "foo": argument "$n" of method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setDifferentNamespace()" references class "stdClass" but no such service exists. It cannot be auto-registered because it is from a different root namespace.'),
-            array(null, 'Invalid service "foo": method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setProtectedMethod()" must be public.'),
-        );
+        return [
+            ['setNotAutowireable', 'Cannot autowire service "foo": argument "$n" of method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setNotAutowireable()" has type "Symfony\Component\DependencyInjection\Tests\Compiler\NotARealClass" but this class was not found.'],
+            ['setDifferentNamespace', 'Cannot autowire service "foo": argument "$n" of method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setDifferentNamespace()" references class "stdClass" but no such service exists. It cannot be auto-registered because it is from a different root namespace.'],
+            [null, 'Invalid service "foo": method "Symfony\Component\Dependen
10000
cyInjection\Tests\Compiler\NotWireable::setProtectedMethod()" must be public.'],
+        ];
     }
 
     /**
@@ -867,7 +867,7 @@ public function testTypedReferenceDeprecationNotice()
         $container->setAlias(AInterface::class, 'aClass');
         $container
             ->register('bar', Bar::class)
-            ->setProperty('a', array(new TypedReference(A::class, A::class, Bar::class)))
+            ->setProperty('a', [new TypedReference(A::class, A::class, Bar::class)])
         ;
 
         $pass = new AutowirePass();
@@ -922,6 +922,6 @@ public function testInlineServicesAreNotCandidates()
         $pass = new AutowirePass();
         $pass->process($container);
 
-        $this->assertSame(array(), $container->getDefinition('autowired')->getArguments());
+        $this->assertSame([], $container->getDefinition('autowired')->getArguments());
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowireRequiredMethodsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowireRequiredMethodsPassTest.php
index 07c9f9d774e3..644b32d20465 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowireRequiredMethodsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowireRequiredMethodsPassTest.php
@@ -32,7 +32,7 @@ public function testSetterInjection()
         $container
             ->register('setter_injection', SetterInjection::class)
             ->setAutowired(true)
-            ->addMethodCall('setWithCallsConfigured', array('manual_arg1', 'manual_arg2'));
+            ->addMethodCall('setWithCallsConfigured', ['manual_arg1', 'manual_arg2']);
 
         (new ResolveClassPass())->process($container);
         (new AutowireRequiredMethodsPass())->process($container);
@@ -40,17 +40,17 @@ public function testSetterInjection()
         $methodCalls = $container->getDefinition('setter_injection')->getMethodCalls();
 
         $this->assertEquals(
-            array('setWithCallsConfigured', 'setFoo', 'setDependencies', 'setChildMethodWithoutDocBlock'),
+            ['setWithCallsConfigured', 'setFoo', 'setDependencies', 'setChildMethodWithoutDocBlock'],
             array_column($methodCalls, 0)
         );
 
         // test setWithCallsConfigured args
         $this->assertEquals(
-            array('manual_arg1', 'manual_arg2'),
+            ['manual_arg1', 'manual_arg2'],
             $methodCalls[0][1]
         );
         // test setFoo args
-        $this->assertEquals(array(), $methodCalls[1][1]);
+        $this->assertEquals([], $methodCalls[1][1]);
     }
 
     public function testExplicitMethodInjection()
@@ -64,7 +64,7 @@ public function testExplicitMethodInjection()
         $container
             ->register('setter_injection', SetterInjection::class)
             ->setAutowired(true)
-            ->addMethodCall('notASetter', array());
+            ->addMethodCall('notASetter', []);
 
         (new ResolveClassPass())->process($container);
         (new AutowireRequiredMethodsPass())->process($container);
@@ -72,9 +72,9 @@ public function testExplicitMethodInjection()
         $methodCalls = $container->getDefinition('setter_injection')->getMethodCalls();
 
         $this->assertEquals(
-            array('notASetter', 'setFoo', 'setDependencies', 'setWithCallsConfigured', 'setChildMethodWithoutDocBlock'),
+            ['notASetter', 'setFoo', 'setDependencies', 'setWithCallsConfigured', 'setChildMethodWithoutDocBlock'],
             array_column($methodCalls, 0)
         );
-        $this->assertEquals(array(), $methodCalls[0][1]);
+        $this->assertEquals([], $methodCalls[0][1]);
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckArgumentsValidityPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckArgumentsValidityPassTest.php
index d121689ff9c6..c1e47b308e76 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckArgumentsValidityPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckArgumentsValidityPassTest.php
@@ -24,20 +24,20 @@ public function testProcess()
     {
         $container = new ContainerBuilder();
         $definition = $container->register('foo');
-        $definition->setArguments(array(null, 1, 'a'));
-        $definition->setMethodCalls(array(
-            array('bar', array('a', 'b')),
-            array('baz', array('c', 'd')),
-        ));
+        $definition->setArguments([null, 1, 'a']);
+        $definition->setMethodCalls([
+            ['bar', ['a', 'b']],
+            ['baz', ['c', 'd']],
+        ]);
 
         $pass = new CheckArgumentsValidityPass();
         $pass->process($container);
 
-        $this->assertEquals(array(null, 1, 'a'), $container->getDefinition('foo')->getArguments());
-        $this->assertEquals(array(
-            array('bar', array('a', 'b')),
-            array('baz', array('c', 'd')),
-        ), $container->getDefinition('foo')->getMethodCalls());
+        $this->assertEquals([null, 1, 'a'], $container->getDefinition('foo')->getArguments());
+        $this->assertEquals([
+            ['bar', ['a', 'b']],
+            ['baz', ['c', 'd']],
+        ], $container->getDefinition('foo')->getMethodCalls());
     }
 
     /**
@@ -57,19 +57,19 @@ public function testException(array $arguments, array $methodCalls)
 
     public function definitionProvider()
     {
-        return array(
-            array(array(null, 'a' => 'a'), array()),
-            array(array(1 => 1), array()),
-            array(array(), array(array('baz', array(null, 'a' => 'a')))),
-            array(array(), array(array('baz', array(1 => 1)))),
-        );
+        return [
+            [[null, 'a' => 'a'], []],
+            [[1 => 1], []],
+            [[], [['baz', [null, 'a' => 'a']]]],
+            [[], [['baz', [1 => 1]]]],
+        ];
     }
 
     public function testNoException()
     {
         $container = new ContainerBuilder();
         $definition = $container->register('foo');
-        $definition->setArguments(array(null, 'a' => 'a'));
+        $definition->setArguments([null, 'a' => 'a']);
 
         $pass = new CheckArgumentsValidityPass(false);
         $pass->process($container);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckCircularReferencesPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckCircularReferencesPassTest.php
index a87dc44a9cb2..8423c5616b3b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckCircularReferencesPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckCircularReferencesPassTest.php
@@ -55,11 +55,11 @@ public function testProcessWithFactory()
 
         $container
             ->register('a', 'stdClass')
-            ->setFactory(array(new Reference('b'), 'getInstance'));
+            ->setFactory([new Reference('b'), 'getInstance']);
 
         $container
             ->register('b', 'stdClass')
-            ->setFactory(array(new Reference('a'), 'getInstance'));
+            ->setFactory([new Reference('a'), 'getInstance']);
 
         $this->process($container);
     }
@@ -88,7 +88,7 @@ public function testProcessDetectsIndirectCircularReferenceWithFactory()
 
         $container
             ->register('b', 'stdClass')
-            ->setFactory(array(new Reference('c'), 'getInstance'));
+            ->setFactory([new Reference('c'), 'getInstance']);
 
         $container->register('c')->addArgument(new Reference('a'));
 
@@ -112,7 +112,7 @@ public function testProcessIgnoresMethodCalls()
     {
         $container = new ContainerBuilder();
         $container->register('a')->addArgument(new Reference('b'));
-        $container->register('b')->addMethodCall('setA', array(new Reference('a')));
+        $container->register('b')->addMethodCall('setA', [new Reference('a')]);
 
         $this->process($container);
 
@@ -135,7 +135,7 @@ public function testProcessIgnoresIteratorArguments()
     {
         $container = new ContainerBuilder();
         $container->register('a')->addArgument(new Reference('b'));
-        $container->register('b')->addArgument(new IteratorArgument(array(new Reference('a'))));
+        $container->register('b')->addArgument(new IteratorArgument([new Reference('a')]));
 
         $this->process($container);
 
@@ -147,11 +147,11 @@ protected function process(ContainerBuilder $container)
     {
         $compiler = new Compiler();
         $passConfig = $compiler->getPassConfig();
-        $passConfig->setOptimizationPasses(array(
+        $passConfig->setOptimizationPasses([
             new AnalyzeServiceReferencesPass(true),
             new CheckCircularReferencesPass(),
-        ));
-        $passConfig->setRemovingPasses(array());
+        ]);
+        $passConfig->setRemovingPasses([]);
 
         $compiler->compile($container);
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckDefinitionValidityPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckDefinitionValidityPassTest.php
index f698ed02dc74..e1dd60b662be 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckDefinitionValidityPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckDefinitionValidityPassTest.php
@@ -55,10 +55,10 @@ public function testProcess()
     public function testValidTags()
     {
         $container = new ContainerBuilder();
-        $container->register('a', 'class')->addTag('foo', array('bar' => 'baz'));
-        $container->register('b', 'class')->addTag('foo', array('bar' => null));
-        $container->register('c', 'class')->addTag('foo', array('bar' => 1));
-        $container->register('d', 'class')->addTag('foo', array('bar' => 1.1));
+        $container->register('a', 'class')->addTag('foo', ['bar' => 'baz']);
+        $container->register('b', 'class')->addTag('foo', ['bar' => null]);
+        $container->register('c', 'class')->addTag('foo', ['bar' => 1]);
+        $container->register('d', 'class')->addTag('foo', ['bar' => 1.1]);
 
         $this->process($container);
 
@@ -71,7 +71,7 @@ public function testValidTags()
     public function testInvalidTags()
     {
         $container = new ContainerBuilder();
-        $container->register('a', 'class')->addTag('foo', array('bar' => array('baz' => 'baz')));
+        $container->register('a', 'class')->addTag('foo', ['bar' => ['baz' => 'baz']]);
 
         $this->process($container);
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php
index 631c344ff6cb..38717eaf1fd5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php
@@ -74,7 +74,7 @@ public function testProcessDefinitionWithBindings()
 
         $container
             ->register('b')
-            ->setBindings(array(new BoundArgument(new Reference('a'))))
+            ->setBindings([new BoundArgument(new Reference('a'))])
         ;
 
         $this->process($container);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/DecoratorServicePassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/DecoratorServicePassTest.php
index fe1334e91a0d..29fc5cc5784d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/DecoratorServicePassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/DecoratorServicePassTest.php
@@ -130,18 +130,18 @@ public function testProcessMovesTagsFromDecoratedDefinitionToDecoratingDefinitio
         $container = new ContainerBuilder();
         $container
             ->register('foo')
-            ->setTags(array('bar' => array('attr' => 'baz')))
+            ->setTags(['bar' => ['attr' => 'baz']])
         ;
         $container
             ->register('baz')
-            ->setTags(array('foobar' => array('attr' => 'bar')))
+            ->setTags(['foobar' => ['attr' => 'bar']])
             ->setDecoratedService('foo')
         ;
 
         $this->process($container);
 
         $this->assertEmpty($container->getDefinition('baz.inner')->getTags());
-        $this->assertEquals(array('bar' => array('attr' => 'baz'), 'foobar' => array('attr' => 'bar')), $container->getDefinition('baz')->getTags());
+        $this->assertEquals(['bar' => ['attr' => 'baz'], 'foobar' => ['attr' => 'bar']], $container->getDefinition('baz')->getTags());
     }
 
     /**
@@ -164,7 +164,7 @@ public function testProcessMergesAutowiringTypesInDecoratingDefinitionAndRemoveT
 
         $this->process($container);
 
-        $this->assertEquals(array('Bar', 'Foo'), $container->getDefinition('child')->getAutowiringTypes());
+        $this->assertEquals(['Bar', 'Foo'], $container->getDefinition('child')->getAutowiringTypes());
         $this->assertEmpty($container->getDefinition('child.inner')->getAutowiringTypes());
     }
 
@@ -174,7 +174,7 @@ public function testProcessMovesTagsFromDecoratedDefinitionToDecoratingDefinitio
         $container
             ->register('foo')
             ->setPublic(true)
-            ->setTags(array('bar' => array('attr' => 'baz')))
+            ->setTags(['bar' => ['attr' => 'baz']])
         ;
         $container
             ->register('deco1')
@@ -188,7 +188,7 @@ public function testProcessMovesTagsFromDecoratedDefinitionToDecoratingDefinitio
         $this->process($container);
 
         $this->assertEmpty($container->getDefinition('deco1')->getTags());
-        $this->assertEquals(array('bar' => array('attr' => 'baz')), $container->getDefinition('deco2')->getTags());
+        $this->assertEquals(['bar' => ['attr' => 'baz']], $container->getDefinition('deco2')->getTags());
     }
 
     protected function process(ContainerBuilder $container)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/DefinitionErrorExceptionPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/DefinitionErrorExceptionPassTest.php
index e0585e21324b..ce6f0496e052 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/DefinitionErrorExceptionPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/DefinitionErrorExceptionPassTest.php
@@ -29,9 +29,9 @@ public function testThrowsException()
         $def->addError('Things went wrong!');
         $def->addError('Now something else!');
         $container->register('foo_service_id')
-            ->setArguments(array(
+            ->setArguments([
                 $def,
-            ));
+            ]);
 
         $pass = new DefinitionErrorExceptionPass();
         $pass->process($container);
@@ -42,9 +42,9 @@ public function testNoExceptionThrown()
         $container = new ContainerBuilder();
         $def = new Definition();
         $container->register('foo_service_id')
-            ->setArguments(array(
+            ->setArguments([
                 $def,
-            ));
+            ]);
 
         $pass = new DefinitionErrorExceptionPass();
         $pass->process($container);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/FactoryReturnTypePassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/FactoryReturnTypePassTest.php
index bfb61c373f72..87f07c7005eb 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/FactoryReturnTypePassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/FactoryReturnTypePassTest.php
@@ -31,15 +31,15 @@ public function testProcess()
         $container = new ContainerBuilder();
 
         $factory = $container->register('factory');
-        $factory->setFactory(array(FactoryDummy::class, 'createFactory'));
+        $factory->setFactory([FactoryDummy::class, 'createFactory']);
 
         $container->setAlias('alias_factory', 'factory');
 
         $foo = $container->register('foo');
-        $foo->setFactory(array(new Reference('alias_factory'), 'create'));
+        $foo->setFactory([new Reference('alias_factory'), 'create']);
 
         $bar = $container->register('bar', __CLASS__);
-        $bar->setFactory(array(new Reference('factory'), 'create'));
+        $bar->setFactory([new Reference('factory'), 'create']);
 
         $pass = new FactoryReturnTypePass();
         $pass->process($container);
@@ -80,13 +80,13 @@ public function testReturnTypes($factory, $returnType, $hhvmSupport = true)
 
     public function returnTypesProvider()
     {
-        return array(
+        return [
             // must be loaded before the function as they are in the same file
-            array(array(FactoryDummy::class, 'createBuiltin'), null, false),
-            array(array(FactoryDummy::class, 'createParent'), FactoryParent::class),
-            array(array(FactoryDummy::class, 'createSelf'), FactoryDummy::class),
-            array(factoryFunction::class, FactoryDummy::class),
-        );
+            [[FactoryDummy::class, 'createBuiltin'], null, false],
+            [[FactoryDummy::class, 'createParent'], FactoryParent::class],
+            [[FactoryDummy::class, 'createSelf'], FactoryDummy::class],
+            [factoryFunction::class, FactoryDummy::class],
+        ];
     }
 
     public function testCircularReference()
@@ -94,10 +94,10 @@ public function testCircularReference()
         $container = new ContainerBuilder();
 
         $factory = $container->register('factory');
-        $factory->setFactory(array(new Reference('factory2'), 'createSelf'));
+        $factory->setFactory([new Reference('factory2'), 'createSelf']);
 
         $factory2 = $container->register('factory2');
-        $factory2->setFactory(array(new Reference('factory'), 'create'));
+        $factory2->setFactory([new Reference('factory'), 'create']);
 
         $pass = new FactoryReturnTypePass();
         $pass->process($container);
@@ -115,7 +115,7 @@ public function testCompile()
         $container = new ContainerBuilder();
 
         $factory = $container->register('factory');
-        $factory->setFactory(array(FactoryDummy::class, 'createFactory'));
+        $factory->setFactory([FactoryDummy::class, 'createFactory']);
         $container->compile();
 
         $this->assertEquals(FactoryDummy::class, $container->getDefinition('factory')->getClass());
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
index b2ad6f9476fa..6e5c80a7d5cd 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
@@ -33,7 +33,7 @@ public function testProcess()
 
         $container
             ->register('service')
-            ->setArguments(array(new Reference('inlinable.service')))
+            ->setArguments([new Reference('inlinable.service')])
         ;
 
         $this->process($container);
@@ -54,7 +54,7 @@ public function testProcessDoesNotInlinesWhenAliasedServiceIsShared()
 
         $container
             ->register('service')
-            ->setArguments(array($ref = new Reference('foo')))
+            ->setArguments([$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -79,7 +79,7 @@ public function testProcessDoesInlineNonSharedService()
 
         $container
             ->register('service')
-            ->setArguments(array(new Reference('foo'), $ref = new Reference('moo'), new Reference('bar')))
+            ->setArguments([new Reference('foo'), $ref = new Reference('moo'), new Reference('bar')])
         ;
 
         $this->process($container);
@@ -103,7 +103,7 @@ public function testProcessDoesNotInlineMixedServicesLoop()
         $container
             ->register('bar')
             ->setPublic(false)
-            ->addMethodCall('setFoo', array(new Reference('foo')))
+            ->addMethodCall('setFoo', [new Reference('foo')])
         ;
 
         $this->process($container);
@@ -126,7 +126,7 @@ public function testProcessThrowsOnNonSharedLoops()
         $container
             ->register('bar')
             ->setShared(false)
-            ->addMethodCall('setFoo', array(new Reference('foo')))
+            ->addMethodCall('setFoo', [new Reference('foo')])
         ;
 
         $this->process($container);
@@ -173,7 +173,7 @@ public function testProcessInlinesIfMultipleReferencesButAllFromTheSameDefinitio
         $b = $container
             ->register('b')
             ->addArgument(new Reference('a'))
-            ->addArgument(new Definition(null, array(new Reference('a'))))
+            ->addArgument(new Definition(null, [new Reference('a')]))
         ;
 
         $this->process($container);
@@ -193,14 +193,14 @@ public function testProcessInlinesPrivateFactoryReference()
         $b = $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                 $ref = new Reference('b'),
-            ));
+            ]);
 
         $this->process($container);
 
@@ -217,15 +217,15 @@ public function testProcessDoesNotInlinePrivateFactoryIfReferencedMultipleTimesW
         $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                     $ref1 = new Reference('b'),
                     $ref2 = new Reference('b'),
-                ))
+                ])
         ;
         $this->process($container);
 
@@ -243,19 +243,19 @@ public function testProcessDoesNotInlineReferenceWhenUsedByInlineFactory()
         $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $inlineFactory = new Definition();
         $inlineFactory->setPublic(false);
-        $inlineFactory->setFactory(array(new Reference('b'), 'b'));
+        $inlineFactory->setFactory([new Reference('b'), 'b']);
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                     $ref = new Reference('b'),
                     $inlineFactory,
-                ))
+                ])
         ;
         $this->process($container);
 
@@ -274,7 +274,7 @@ public function testProcessDoesNotInlineWhenServiceIsPrivateButLazy()
 
         $container
             ->register('service')
-            ->setArguments(array($ref = new Reference('foo')))
+            ->setArguments([$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -289,7 +289,7 @@ public function testProcessDoesNotInlineWhenServiceReferencesItself()
         $container
             ->register('foo')
             ->setPublic(false)
-            ->addMethodCall('foo', array($ref = new Reference('foo')))
+            ->addMethodCall('foo', [$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -307,11 +307,11 @@ public function testProcessDoesNotSetLazyArgumentValuesAfterInlining()
         ;
         $container
             ->register('service-closure')
-            ->setArguments(array(new ServiceClosureArgument(new Reference('inline'))))
+            ->setArguments([new ServiceClosureArgument(new Reference('inline'))])
         ;
         $container
             ->register('iterator')
-            ->setArguments(array(new IteratorArgument(array(new Reference('inline')))))
+            ->setArguments([new IteratorArgument([new Reference('inline')])])
         ;
 
         $this->process($container);
@@ -342,19 +342,19 @@ public function testGetInlinedServiceIdData()
 
         $container
             ->register('other_service')
-            ->setArguments(array(new Reference('inlinable.service')))
+            ->setArguments([new Reference('inlinable.service')])
         ;
 
         $inlinePass = new InlineServiceDefinitionsPass();
-        $repeatedPass = new RepeatedPass(array(new AnalyzeServiceReferencesPass(), $inlinePass));
+        $repeatedPass = new RepeatedPass([new AnalyzeServiceReferencesPass(), $inlinePass]);
         $repeatedPass->process($container);
 
-        $this->assertEquals(array('inlinable.service' => array('other_service')), $inlinePass->getInlinedServiceIds());
+        $this->assertEquals(['inlinable.service' => ['other_service']], $inlinePass->getInlinedServiceIds());
     }
 
     protected function process(ContainerBuilder $container)
     {
-        $repeatedPass = new RepeatedPass(array(new AnalyzeServiceReferencesPass(), new InlineServiceDefinitionsPass()));
+        $repeatedPass = new RepeatedPass([new AnalyzeServiceReferencesPass(), new InlineServiceDefinitionsPass()]);
         $repeatedPass->process($container);
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php
index 104b39f13ff8..10c34aa489d4 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php
@@ -97,7 +97,7 @@ public function testProcessInlinesWhenThereAreMultipleReferencesButFromTheSameDe
         $container
             ->register('a', '\stdClass')
             ->addArgument(new Reference('b'))
-            ->addMethodCall('setC', array(new Reference('c')))
+            ->addMethodCall('setC', [new Reference('c')])
         ;
 
         $container
@@ -155,8 +155,8 @@ public function testYamlContainerCompiles($directory, $actualServiceId, $expecte
         $expectedService = $container->getDefinition($expectedServiceId);
 
         // reset changes, we don't care if these differ
-        $actualService->setChanges(array());
-        $expectedService->setChanges(array());
+        $actualService->setChanges([]);
+        $expectedService->setChanges([]);
 
         $this->assertEquals($expectedService, $actualService);
     }
@@ -165,61 +165,61 @@ public function getYamlCompileTests()
     {
         $container = new ContainerBuilder();
         $container->registerForAutoconfiguration(IntegrationTestStub::class);
-        yield array(
+        yield [
             'autoconfigure_child_not_applied',
             'child_service',
             'child_service_expected',
             $container,
-        );
+        ];
 
         $container = new ContainerBuilder();
         $container->registerForAutoconfiguration(IntegrationTestStub::class);
-        yield array(
+        yield [
             'autoconfigure_parent_child',
             'child_service',
             'child_service_expected',
             $container,
-        );
+        ];
 
         $container = new ContainerBuilder();
         $container->registerForAutoconfiguration(IntegrationTestStub::class)
             ->addTag('from_autoconfigure');
-        yield array(
+        yield [
             'autoconfigure_parent_child_tags',
             'child_service',
             'child_service_expected',
             $container,
-        );
+        ];
 
-        yield array(
+        yield [
             'child_parent',
             'child_service',
             'child_service_expected',
-        );
+        ];
 
-        yield array(
+        yield [
             'defaults_child_tags',
             'child_service',
             'child_service_expected',
-        );
+        ];
 
-        yield array(
+        yield [
             'defaults_instanceof_importance',
             'main_service',
             'main_service_expected',
-        );
+        ];
 
-        yield array(
+        yield [
             'defaults_parent_child',
             'child_service',
             'child_service_expected',
-        );
+        ];
 
-        yield array(
+        yield [
             'instanceof_parent_child',
             'child_service',
             'child_service_expected',
-        );
+        ];
     }
 }
 
@@ -227,7 +227,7 @@ class ServiceSubscriberStub implements ServiceSubscriberInterface
 {
     public static function getSubscribedServices()
     {
-        return array();
+        return [];
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/MergeExtensionConfigurationPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/MergeExtensionConfigurationPassTest.php
index 3ebd3f5e5c98..667ae388648a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/MergeExtensionConfigurationPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/MergeExtensionConfigurationPassTest.php
@@ -25,7 +25,7 @@ class MergeExtensionConfigurationPassTest extends TestCase
 {
     public function testExpressionLanguageProviderForwarding()
     {
-        $tmpProviders = array();
+        $tmpProviders = [];
 
         $extension = $this->getMockBuilder('Symfony\\Component\\DependencyInjection\\Extension\\ExtensionInterface')->getMock();
         $extension->expects($this->any())
@@ -46,18 +46,18 @@ public function testExpressionLanguageProviderForwarding()
         $provider = $this->getMockBuilder('Symfony\\Component\\ExpressionLanguage\\ExpressionFunctionProviderInterface')->getMock();
         $container = new ContainerBuilder(new ParameterBag());
         $container->registerExtension($extension);
-        $container->prependExtensionConfig('foo', array('bar' => true));
+        $container->prependExtensionConfig('foo', ['bar' => true]);
         $container->addExpressionLanguageProvider($provider);
 
         $pass = new MergeExtensionConfigurationPass();
         $pass->process($container);
 
-        $this->assertEquals(array($provider), $tmpProviders);
+        $this->assertEquals([$provider], $tmpProviders);
     }
 
     public function testExtensionLoadGetAMergeExtensionConfigurationContainerBuilderInstance()
     {
-        $extension = $this->getMockBuilder(FooExtension::class)->setMethods(array('load'))->getMock();
+        $extension = $this->getMockBuilder(FooExtension::class)->setMethods(['load'])->getMock();
         $extension->expects($this->once())
             ->method('load')
             ->with($this->isType('array'), $this->isInstanceOf(MergeExtensionConfigurationContainerBuilder::class))
@@ -65,7 +65,7 @@ public function testExtensionLoadGetAMergeExtensionConfigurationContainerBuilder
 
         $container = new ContainerBuilder(new ParameterBag());
         $container->registerExtension($extension);
-        $container->prependExtensionConfig('foo', array());
+        $container->prependExtensionConfig('foo', []);
 
         $pass = new MergeExtensionConfigurationPass();
         $pass->process($container);
@@ -73,14 +73,14 @@ public function testExtensionLoadGetAMergeExtensionConfigurationContainerBuilder
 
     public function testExtensionConfigurationIsTrackedByDefault()
     {
-        $extension = $this->getMockBuilder(FooExtension::class)->setMethods(array('getConfiguration'))->getMock();
+        $extension = $this->getMockBuilder(FooExtension::class)->setMethods(['getConfiguration'])->getMock();
         $extension->expects($this->exactly(2))
             ->method('getConfiguration')
             ->will($this->returnValue(new FooConfiguration()));
 
         $container = new ContainerBuilder(new ParameterBag());
         $container->registerExtension($extension);
-        $container->prependExtensionConfig('foo', array('bar' => true));
+        $container->prependExtensionConfig('foo', ['bar' => true]);
 
         $pass = new MergeExtensionConfigurationPass();
         $pass->process($container);
@@ -92,14 +92,14 @@ public function testOverriddenEnvsAreMerged()
     {
         $container = new ContainerBuilder();
         $container->registerExtension(new FooExtension());
-        $container->prependExtensionConfig('foo', array('bar' => '%env(FOO)%'));
-        $container->prependExtensionConfig('foo', array('bar' => '%env(BAR)%', 'baz' => '%env(BAZ)%'));
+        $container->prependExtensionConfig('foo', ['bar' => '%env(FOO)%']);
+        $container->prependExtensionConfig('foo', ['bar' => '%env(BAR)%', 'baz' => '%env(BAZ)%']);
 
         $pass = new MergeExtensionConfigurationPass();
         $pass->process($container);
 
-        $this->assertSame(array('BAZ', 'FOO'), array_keys($container->getParameterBag()->getEnvPlaceholders()));
-        $this->assertSame(array('BAZ' => 1, 'FOO' => 0), $container->getEnvCounters());
+        $this->assertSame(['BAZ', 'FOO'], array_keys($container->getParameterBag()->getEnvPlaceholders()));
+        $this->assertSame(['BAZ' => 1, 'FOO' => 0], $container->getEnvCounters());
     }
 
     /**
@@ -110,7 +110,7 @@ public function testProcessedEnvsAreIncompatibleWithResolve()
     {
         $container = new ContainerBuilder();
         $container->registerExtension(new BarExtension());
-        $container->prependExtensionConfig('bar', array());
+        $container->prependExtensionConfig('bar', []);
 
         (new MergeExtensionConfigurationPass())->process($container);
     }
@@ -119,7 +119,7 @@ public function testThrowingExtensionsGetMergedBag()
     {
         $container = new ContainerBuilder();
         $container->registerExtension(new ThrowingExtension());
-        $container->prependExtensionConfig('throwing', array('bar' => '%env(FOO)%'));
+        $container->prependExtensionConfig('throwing', ['bar' => '%env(FOO)%']);
 
         try {
             $pass = new MergeExtensionConfigurationPass();
@@ -128,7 +128,7 @@ public function testThrowingExtensionsGetMergedBag()
         } catch (\Exception $e) {
         }
 
-        $this->assertSame(array('FOO'), array_keys($container->getParameterBag()->getEnvPlaceholders()));
+        $this->assertSame(['FOO'], array_keys($container->getParameterBag()->getEnvPlaceholders()));
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PassConfigTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PassConfigTest.php
index 1fd772ee690e..9470e526fa27 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PassConfigTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PassConfigTest.php
@@ -23,7 +23,7 @@ class PassConfigTest extends TestCase
     public function testPassOrdering()
     {
         $config = new PassConfig();
-        $config->setBeforeOptimizationPasses(array());
+        $config->setBeforeOptimizationPasses([]);
 
         $pass1 = $this->getMockBuilder(CompilerPassInterface::class)->getMock();
         $config->addPass($pass1, PassConfig::TYPE_BEFORE_OPTIMIZATION, 10);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
index 61e3fa947a47..57682b5da566 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
@@ -20,27 +20,27 @@ class PriorityTaggedServiceTraitTest extends TestCase
 {
     public function testThatCacheWarmersAreProcessedInPriorityOrder()
     {
-        $services = array(
-            'my_service1' => array('my_custom_tag' => array('priority' => 100)),
-            'my_service2' => array('my_custom_tag' => array('priority' => 200)),
-            'my_service3' => array('my_custom_tag' => array('priority' => -501)),
-            'my_service4' => array('my_custom_tag' => array()),
-            'my_service5' => array('my_custom_tag' => array('priority' => -1)),
-            'my_service6' => array('my_custom_tag' => array('priority' => -500)),
-            'my_service7' => array('my_custom_tag' => array('priority' => -499)),
-            'my_service8' => array('my_custom_tag' => array('priority' => 1)),
-            'my_service9' => array('my_custom_tag' => array('priority' => -2)),
-            'my_service10' => array('my_custom_tag' => array('priority' => -1000)),
-            'my_service11' => array('my_custom_tag' => array('priority' => -1001)),
-            'my_service12' => array('my_custom_tag' => array('priority' => -1002)),
-            'my_service13' => array('my_custom_tag' => array('priority' => -1003)),
-            'my_service14' => array('my_custom_tag' => array('priority' => -1000)),
-            'my_service15' => array('my_custom_tag' => array('priority' => 1)),
-            'my_service16' => array('my_custom_tag' => array('priority' => -1)),
-            'my_service17' => array('my_custom_tag' => array('priority' => 200)),
-            'my_service18' => array('my_custom_tag' => array('priority' => 100)),
-            'my_service19' => array('my_custom_tag' => array()),
-        );
+        $services = [
+            'my_service1' => ['my_custom_tag' => ['priority' => 100]],
+            'my_service2' => ['my_custom_tag' => ['priority' => 200]],
+            'my_service3' => ['my_custom_tag' => ['priority' => -501]],
+            'my_service4' => ['my_custom_tag' => []],
+            'my_service5' => ['my_custom_tag' => ['priority' => -1]],
+            'my_service6' => ['my_custom_tag' => ['priority' => -500]],
+            'my_service7' => ['my_custom_tag' => ['priority' => -499]],
+            'my_service8' => ['my_custom_tag' => ['priority' => 1]],
+            'my_service9' => ['my_custom_tag' => ['priority' => -2]],
+            'my_service10' => ['my_custom_tag' => ['priority' => -1000]],
+            'my_service11' => ['my_custom_tag' => ['priority' => -1001]],
+            'my_service12' => ['my_custom_tag' => ['priority' => -1002]],
+            'my_service13' => ['my_custom_tag' => ['priority' => -1003]],
+            'my_service14' => ['my_custom_tag' => ['priority' => -1000]],
+            'my_service15' => ['my_custom_tag' => ['priority' => 1]],
+            'my_service16' => ['my_custom_tag' => ['priority' => -1]],
+            'my_service17' => ['my_custom_tag' => ['priority' => 200]],
+            'my_service18' => ['my_custom_tag' => ['priority' => 100]],
+            'my_service19' => ['my_custom_tag' => []],
+        ];
 
         $container = new ContainerBuilder();
 
@@ -52,7 +52,7 @@ public function testThatCacheWarmersAreProcessedInPriorityOrder()
             }
         }
 
-        $expected = array(
+        $expected = [
             new Reference('my_service2'),
             new Reference('my_service17'),
             new Reference('my_service1'),
@@ -72,7 +72,7 @@ public function testThatCacheWarmersAreProcessedInPriorityOrder()
             new Reference('my_service11'),
             new Reference('my_service12'),
             new Reference('my_service13'),
-        );
+        ];
 
         $priorityTaggedServiceTraitImplementation = new PriorityTaggedServiceTraitImplementation();
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
index cddb62dce982..3d3fdf769470 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
@@ -28,18 +28,18 @@ public function testSimpleProcessor()
         $this->assertTrue($container->has('container.env_var_processors_locator'));
         $this->assertInstanceOf(SimpleProcessor::class, $container->get('container.env_var_processors_locator')->get('foo'));
 
-        $expected = array(
-            'foo' => array('string'),
-            'base64' => array('string'),
-            'bool' => array('bool'),
-            'const' => array('bool', 'int', 'float', 'string', 'array'),
-            'file' => array('string'),
-            'float' => array('float'),
-            'int' => array('int'),
-            'json' => array('array'),
-            'resolve' => array('string'),
-            'string' => array('string'),
-        );
+        $expected = [
+            'foo' => ['string'],
+            'base64' => ['string'],
+            'bool' => ['bool'],
+            'const' => ['bool', 'int', 'float', 'string', 'array'],
+            'file' => ['string'],
+            'float' => ['float'],
+            'int' => ['int'],
+            'json' => ['array'],
+            'resolve' => ['string'],
+            'string' => ['string'],
+        ];
 
         $this->assertSame($expected, $container->getParameterBag()->getProvidedTypes());
     }
@@ -75,7 +75,7 @@ public function getEnv($prefix, $name, \Closure $getEnv)
 
     public static function getProvidedTypes()
     {
-        return array('foo' => 'string');
+        return ['foo' => 'string'];
     }
 }
 
@@ -83,6 +83,6 @@ class BadProcessor extends SimpleProcessor
 {
     public static function getProvidedTypes()
     {
-        return array('foo' => 'string|foo');
+        return ['foo' => 'string|foo'];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
index 42f994e821d9..0356c9713318 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
@@ -53,7 +53,7 @@ public function testInvalidAttributes()
         $container = new ContainerBuilder();
 
         $container->register('foo', TestServiceSubscriber::class)
-            ->addTag('container.service_subscriber', array('bar' => '123'))
+            ->addTag('container.service_subscriber', ['bar' => '123'])
         ;
 
         (new RegisterServiceSubscribersPass())->process($container);
@@ -78,12 +78,12 @@ public function testNoAttributes()
         $this->assertFalse($locator->isPublic());
         $this->assertSame(ServiceLocator::class, $locator->getClass());
 
-        $expected = array(
+        $expected = [
             TestServiceSubscriber::class => new ServiceClosureArgument(new TypedReference(TestServiceSubscriber::class, TestServiceSubscriber::class, TestServiceSubscriber::class)),
             CustomDefinition::class => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, TestServiceSubscriber::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             'bar' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, TestServiceSubscriber::class)),
             'baz' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, TestServiceSubscriber::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
-        );
+        ];
 
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
@@ -95,8 +95,8 @@ public function testWithAttributes()
         $container->register('foo', TestServiceSubscriber::class)
             ->setAutowired(true)
             ->addArgument(new Reference(PsrContainerInterface::class))
-            ->addTag('container.service_subscriber', array('key' => 'bar', 'id' => 'bar'))
-            ->addTag('container.service_subscriber', array('key' => 'bar', 'id' => 'baz')) // should be ignored: the first wins
+            ->addTag('container.service_subscriber', ['key' => 'bar', 'id' => 'bar'])
+            ->addTag('container.service_subscriber', ['key' => 'bar', 'id' => 'baz']) // should be ignored: the first wins
         ;
 
         (new RegisterServiceSubscribersPass())->process($container);
@@ -108,12 +108,12 @@ public function testWithAttributes()
         $this->assertFalse($locator->isPublic());
         $this->assertSame(ServiceLocator::class, $locator->getClass());
 
-        $expected = array(
+        $expected = [
             TestServiceSubscriber::class => new ServiceClosureArgument(new TypedReference(TestServiceSubscriber::class, TestServiceSubscriber::class, TestServiceSubscriber::class)),
             CustomDefinition::class => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, TestServiceSubscriber::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             'bar' => new ServiceClosureArgument(new TypedReference('bar', CustomDefinition::class, TestServiceSubscriber::class)),
             'baz' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, TestServiceSubscriber::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
-        );
+        ];
 
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
@@ -128,10 +128,10 @@ public function testExtraServiceSubscriber()
         $container->register('foo_service', TestServiceSubscriber::class)
             ->setAutowired(true)
             ->addArgument(new Reference(PsrContainerInterface::class))
-            ->addTag('container.service_subscriber', array(
+            ->addTag('container.service_subscriber', [
                 'key' => 'test',
                 'id' => TestServiceSubscriber::class,
-            ))
+            ])
         ;
         $container->register(TestServiceSubscriber::class, TestServiceSubscriber::class);
         $container->compile();
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php
index fd26561a247f..1dfdd9dde893 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php
@@ -35,7 +35,7 @@ public function testProcess()
         ;
         $container
             ->register('moo')
-            ->setArguments(array(new Reference('bar')))
+            ->setArguments([new Reference('bar')])
         ;
 
         $this->process($container);
@@ -54,7 +54,7 @@ public function testProcessRemovesUnusedDefinitionsRecursively()
         ;
         $container
             ->register('bar')
-            ->setArguments(array(new Reference('foo')))
+            ->setArguments([new Reference('foo')])
             ->setPublic(false)
         ;
 
@@ -73,7 +73,7 @@ public function testProcessWorksWithInlinedDefinitions()
         ;
         $container
             ->register('bar')
-            ->setArguments(array(new Definition(null, array(new Reference('foo')))))
+            ->setArguments([new Definition(null, [new Reference('foo')])])
         ;
 
         $this->process($container);
@@ -88,12 +88,12 @@ public function testProcessWontRemovePrivateFactory()
 
         $container
             ->register('foo', 'stdClass')
-            ->setFactory(array('stdClass', 'getInstance'))
+            ->setFactory(['stdClass', 'getInstance'])
             ->setPublic(false);
 
         $container
             ->register('bar', 'stdClass')
-            ->setFactory(array(new Reference('foo'), 'getInstance'))
+            ->setFactory([new Reference('foo'), 'getInstance'])
             ->setPublic(false);
 
         $container
@@ -113,7 +113,7 @@ public function testProcessConsiderEnvVariablesAsUsedEvenInPrivateServices()
         $container->setParameter('env(FOOBAR)', 'test');
         $container
             ->register('foo')
-            ->setArguments(array('%env(FOOBAR)%'))
+            ->setArguments(['%env(FOOBAR)%'])
             ->setPublic(false)
         ;
 
@@ -131,7 +131,7 @@ public function testProcessConsiderEnvVariablesAsUsedEvenInPrivateServices()
 
     protected function process(ContainerBuilder $container)
     {
-        $repeatedPass = new RepeatedPass(array(new AnalyzeServiceReferencesPass(), new RemoveUnusedDefinitionsPass()));
+        $repeatedPass = new RepeatedPass([new AnalyzeServiceReferencesPass(), new RemoveUnusedDefinitionsPass()]);
         $repeatedPass->process($container);
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ReplaceAliasByActualDefinitionPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ReplaceAliasByActualDefinitionPassTest.php
index 7574e7943b4c..f9c755c35e18 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ReplaceAliasByActualDefinitionPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ReplaceAliasByActualDefinitionPassTest.php
@@ -26,7 +26,7 @@ public function testProcess()
         $container = new ContainerBuilder();
 
         $aDefinition = $container->register('a', '\stdClass');
-        $aDefinition->setFactory(array(new Reference('b'), 'createA'));
+        $aDefinition->setFactory([new Reference('b'), 'createA']);
 
         $bDefinition = new Definition('\stdClass');
         $bDefinition->setPublic(false);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
index d59b95af5c40..5118b416f93f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
@@ -30,10 +30,10 @@ public function testProcess()
     {
         $container = new ContainerBuilder();
 
-        $bindings = array(CaseSensitiveClass::class => new BoundArgument(new Reference('foo')));
+        $bindings = [CaseSensitiveClass::class => new BoundArgument(new Reference('foo'))];
 
         $definition = $container->register(NamedArgumentsDummy::class, NamedArgumentsDummy::class);
-        $definition->setArguments(array(1 => '123'));
+        $definition->setArguments([1 => '123']);
         $definition->addMethodCall('setSensitiveClass');
         $definition->setBindings($bindings);
 
@@ -43,8 +43,8 @@ public function testProcess()
         $pass = new ResolveBindingsPass();
         $pass->process($container);
 
-        $this->assertEquals(array(new Reference('foo'), '123'), $definition->getArguments());
-        $this->assertEquals(array(array('setSensitiveClass', array(new Reference('foo')))), $definition->getMethodCalls());
+        $this->assertEquals([new Reference('foo'), '123'], $definition->getArguments());
+        $this->assertEquals([['setSensitiveClass', [new Reference('foo')]]], $definition->getMethodCalls());
     }
 
     /**
@@ -56,7 +56,7 @@ public function testUnusedBinding()
         $container = new ContainerBuilder();
 
         $definition = $container->register(NamedArgumentsDummy::class, NamedArgumentsDummy::class);
-        $definition->setBindings(array('$quz' => '123'));
+        $definition->setBindings(['$quz' => '123']);
 
         $pass = new ResolveBindingsPass();
         $pass->process($container);
@@ -71,7 +71,7 @@ public function testMissingParent()
         $container = new ContainerBuilder();
 
         $definition = $container->register(ParentNotExists::class, ParentNotExists::class);
-        $definition->setBindings(array('$quz' => '123'));
+        $definition->setBindings(['$quz' => '123']);
 
         $pass = new ResolveBindingsPass();
         $pass->process($container);
@@ -81,7 +81,7 @@ public function testTypedReferenceSupport()
     {
         $container = new ContainerBuilder();
 
-        $bindings = array(CaseSensitiveClass::class => new BoundArgument(new Reference('foo')));
+        $bindings = [CaseSensitiveClass::class => new BoundArgument(new Reference('foo'))];
 
         // Explicit service id
         $definition1 = $container->register('def1', NamedArgumentsDummy::class);
@@ -95,8 +95,8 @@ public function testTypedReferenceSupport()
         $pass = new ResolveBindingsPass();
         $pass->process($container);
 
-        $this->assertEquals(array($typedRef), $container->getDefinition('def1')->getArguments());
-        $this->assertEquals(array(new Reference('foo')), $container->getDefinition('def2')->getArguments());
+        $this->assertEquals([$typedRef], $container->getDefinition('def1')->getArguments());
+        $this->assertEquals([new Reference('foo')], $container->getDefinition('def2')->getArguments());
     }
 
     public function testScalarSetter()
@@ -104,11 +104,11 @@ public function testScalarSetter()
         $container = new ContainerBuilder();
 
         $definition = $container->autowire('foo', ScalarSetter::class);
-        $definition->setBindings(array('$defaultLocale' => 'fr'));
+        $definition->setBindings(['$defaultLocale' => 'fr']);
 
         (new AutowireRequiredMethodsPass())->process($container);
         (new ResolveBindingsPass())->process($container);
 
-        $this->assertEquals(array(array('setDefaultLocale', array('fr'))), $definition->getMethodCalls());
+        $this->assertEquals([['setDefaultLocale', ['fr']]], $definition->getMethodCalls());
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
index 1575bd7b0775..4eca8f707388 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
@@ -22,7 +22,7 @@ class ResolveChildDefinitionsPassTest extends TestCase
     public function testProcess()
     {
         $container = new ContainerBuilder();
-        $container->register('parent', 'foo')->setArguments(array('moo', 'b'))->setProperty('foo', 'moo');
+        $container->register('parent', 'foo')->setArguments(['moo', 'b'])->setProperty('foo', 'moo');
         $container->setDefinition('child', new ChildDefinition('parent'))
             ->replaceArgument(0, 'a')
             ->setProperty('foo', 'bar')
@@ -34,8 +34,8 @@ public function testProcess()
         $def = $container->getDefinition('child');
         $this->assertNotInstanceOf(ChildDefinition::class, $def);
         $this->assertEquals('bar', $def->getClass());
-        $this->assertEquals(array('a', 'b'), $def->getArguments());
-        $this->assertEquals(array('foo' => 'bar'), $def->getProperties());
+        $this->assertEquals(['a', 'b'], $def->getArguments());
+        $this->assertEquals(['foo' => 'bar'], $def->getProperties());
     }
 
     public function testProcessAppendsMethodCallsAlways()
@@ -44,21 +44,21 @@ public function testProcessAppendsMethodCallsAlways()
 
         $container
             ->register('parent')
-            ->addMethodCall('foo', array('bar'))
+            ->addMethodCall('foo', ['bar'])
         ;
 
         $container
             ->setDefinition('child', new ChildDefinition('parent'))
-            ->addMethodCall('bar', array('foo'))
+            ->addMethodCall('bar', ['foo'])
         ;
 
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertEquals(array(
-            array('foo', array('bar')),
-            array('bar', array('foo')),
-        ), $def->getMethodCalls());
+        $this->assertEquals([
+            ['foo', ['bar']],
+            ['bar', ['foo']],
+        ], $def->getMethodCalls());
     }
 
     public function testProcessDoesNotCopyAbstract()
@@ -115,7 +115,7 @@ public function testProcessDoesNotCopyTags()
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertEquals(array(), $def->getTags());
+        $this->assertEquals([], $def->getTags());
     }
 
     public function testProcessDoesNotCopyDecoratedService()
@@ -162,7 +162,7 @@ public function testProcessHandlesMultipleInheritance()
 
         $container
             ->register('parent', 'foo')
-            ->setArguments(array('foo', 'bar', 'c'))
+            ->setArguments(['foo', 'bar', 'c'])
         ;
 
         $container
@@ -178,7 +178,7 @@ public function testProcessHandlesMultipleInheritance()
         $this->process($container);
 
         $def = $container->getDefinition('child2');
-        $this->assertEquals(array('a', 'b', 'c'), $def->getArguments());
+        $this->assertEquals(['a', 'b', 'c'], $def->getArguments());
         $this->assertEquals('foo', $def->getClass());
     }
 
@@ -251,10 +251,10 @@ public function testDeepDefinitionsResolving()
         $container->register('parent', 'parentClass');
         $container->register('sibling', 'siblingClass')
             ->setConfigurator(new ChildDefinition('parent'), 'foo')
-            ->setFactory(array(new ChildDefinition('parent'), 'foo'))
+            ->setFactory([new ChildDefinition('parent'), 'foo'])
             ->addArgument(new ChildDefinition('parent'))
             ->setProperty('prop', new ChildDefinition('parent'))
-            ->addMethodCall('meth', array(new ChildDefinition('parent')))
+            ->addMethodCall('meth', [new ChildDefinition('parent')])
         ;
 
         $this->process($container);
@@ -292,7 +292,7 @@ public function testSetDecoratedServiceOnServiceHasParent()
 
         $this->process($container);
 
-        $this->assertEquals(array('foo', 'foo_inner', 5), $container->getDefinition('child1')->getDecoratedService());
+        $this->assertEquals(['foo', 'foo_inner', 5], $container->getDefinition('child1')->getDecoratedService());
     }
 
     public function testDecoratedServiceCopiesDeprecatedStatusFromParent()
@@ -345,10 +345,10 @@ public function testProcessMergeAutowiringTypes()
         $this->process($container);
 
         $childDef = $container->getDefinition('child');
-        $this->assertEquals(array('Foo', 'Bar'), $childDef->getAutowiringTypes());
+        $this->assertEquals(['Foo', 'Bar'], $childDef->getAutowiringTypes());
 
         $parentDef = $container->getDefinition('parent');
-        $this->assertSame(array('Foo'), $parentDef->getAutowiringTypes());
+        $this->assertSame(['Foo'], $parentDef->getAutowiringTypes());
     }
 
     public function testProcessResolvesAliases()
@@ -369,17 +369,17 @@ public function testProcessSetsArguments()
     {
         $container = new ContainerBuilder();
 
-        $container->register('parent', 'ParentClass')->setArguments(array(0));
-        $container->setDefinition('child', (new ChildDefinition('parent'))->setArguments(array(
+        $container->register('parent', 'ParentClass')->setArguments([0]);
+        $container->setDefinition('child', (new ChildDefinition('parent'))->setArguments([
             1,
             'index_0' => 2,
             'foo' => 3,
-        )));
+        ]));
 
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertSame(array(2, 1, 'foo' => 3), $def->getArguments());
+        $this->assertSame([2, 1, 'foo' => 3], $def->getArguments());
     }
 
     public function testBindings()
@@ -387,20 +387,20 @@ public function testBindings()
         $container = new ContainerBuilder();
 
         $container->register('parent', 'stdClass')
-            ->setBindings(array('a' => '1', 'b' => '2'))
+            ->setBindings(['a' => '1', 'b' => '2'])
         ;
 
         $child = $container->setDefinition('child', new ChildDefinition('parent'))
-            ->setBindings(array('b' => 'B', 'c' => 'C'))
+            ->setBindings(['b' => 'B', 'c' => 'C'])
         ;
 
         $this->process($container);
 
-        $bindings = array();
+        $bindings = [];
         foreach ($container->getDefinition('child')->getBindings() as $k => $v) {
             $bindings[$k] = $v->getValues()[0];
         }
-        $this->assertEquals(array('b' => 'B', 'c' => 'C', 'a' => '1'), $bindings);
+        $this->assertEquals(['b' => 'B', 'c' => 'C', 'a' => '1'], $bindings);
     }
 
     public function testSetAutoconfiguredOnServiceIsParent()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveClassPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveClassPassTest.php
index acbcf1dda2d8..48df3843dc5b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveClassPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveClassPassTest.php
@@ -34,8 +34,8 @@ public function testResolveClassFromId($serviceId)
 
     public function provideValidClassId()
     {
-        yield array('Acme\UnknownClass');
-        yield array(CaseSensitiveClass::class);
+        yield ['Acme\UnknownClass'];
+        yield [CaseSensitiveClass::class];
     }
 
     /**
@@ -53,9 +53,9 @@ public function testWontResolveClassFromId($serviceId)
 
     public function provideInvalidClassId()
     {
-        yield array(\stdClass::class);
-        yield array('bar');
-        yield array('\DateTime');
+        yield [\stdClass::class];
+        yield ['bar'];
+        yield ['\DateTime'];
     }
 
     public function testNonFqcnChildDefinition()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveDefinitionTemplatesPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveDefinitionTemplatesPassTest.php
index 39ae7f4f6229..407c803cbc7c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveDefinitionTemplatesPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveDefinitionTemplatesPassTest.php
@@ -24,7 +24,7 @@ class ResolveDefinitionTemplatesPassTest extends TestCase
     public function testProcess()
     {
         $container = new ContainerBuilder();
-        $container->register('parent', 'foo')->setArguments(array('moo', 'b'))->setProperty('foo', 'moo');
+        $container->register('parent', 'foo')->setArguments(['moo', 'b'])->setProperty('foo', 'moo');
         $container->setDefinition('child', new ChildDefinition('parent'))
             ->replaceArgument(0, 'a')
             ->setProperty('foo', 'bar')
@@ -36,8 +36,8 @@ public function testProcess()
         $def = $container->getDefinition('child');
         $this->assertNotInstanceOf(ChildDefinition::class, $def);
         $this->assertEquals('bar', $def->getClass());
-        $this->assertEquals(array('a', 'b'), $def->getArguments());
-        $this->assertEquals(array('foo' => 'bar'), $def->getProperties());
+        $this->assertEquals(['a', 'b'], $def->getArguments());
+        $this->assertEquals(['foo' => 'bar'], $def->getProperties());
     }
 
     public function testProcessAppendsMethodCallsAlways()
@@ -46,21 +46,21 @@ public function testProcessAppendsMethodCallsAlways()
 
         $container
             ->register('parent')
-            ->addMethodCall('foo', array('bar'))
+            ->addMethodCall('foo', ['bar'])
         ;
 
         $container
             ->setDefinition('child', new ChildDefinition('parent'))
-            ->addMethodCall('bar', array('foo'))
+            ->addMethodCall('bar', ['foo'])
         ;
 
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertEquals(array(
-            array('foo', array('bar')),
-            array('bar', array('foo')),
-        ), $def->getMethodCalls());
+        $this->assertEquals([
+            ['foo', ['bar']],
+            ['bar', ['foo']],
+        ], $def->getMethodCalls());
     }
 
     public function testProcessDoesNotCopyAbstract()
@@ -117,7 +117,7 @@ public function testProcessDoesNotCopyTags()
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertEquals(array(), $def->getTags());
+        $this->assertEquals([], $def->getTags());
     }
 
     public function testProcessDoesNotCopyDecoratedService()
@@ -164,7 +164,7 @@ public function testProcessHandlesMultipleInheritance()
 
         $container
             ->register('parent', 'foo')
-            ->setArguments(array('foo', 'bar', 'c'))
+            ->setArguments(['foo', 'bar', 'c'])
         ;
 
         $container
@@ -180,7 +180,7 @@ public function testProcessHandlesMultipleInheritance()
         $this->process($container);
 
         $def = $container->getDefinition('child2');
-        $this->assertEquals(array('a', 'b', 'c'), $def->getArguments());
+        $this->assertEquals(['a', 'b', 'c'], $def->getArguments());
         $this->assertEquals('foo', $def->getClass());
     }
 
@@ -253,10 +253,10 @@ public function testDeepDefinitionsResolving()
         $container->register('parent', 'parentClass');
         $container->register('sibling', 'siblingClass')
             ->setConfigurator(new ChildDefinition(
10000
'parent'), 'foo')
-            ->setFactory(array(new ChildDefinition('parent'), 'foo'))
+            ->setFactory([new ChildDefinition('parent'), 'foo'])
             ->addArgument(new ChildDefinition('parent'))
             ->setProperty('prop', new ChildDefinition('parent'))
-            ->addMethodCall('meth', array(new ChildDefinition('parent')))
+            ->addMethodCall('meth', [new ChildDefinition('parent')])
         ;
 
         $this->process($container);
@@ -294,7 +294,7 @@ public function testSetDecoratedServiceOnServiceHasParent()
 
         $this->process($container);
 
-        $this->assertEquals(array('foo', 'foo_inner', 5), $container->getDefinition('child1')->getDecoratedService());
+        $this->assertEquals(['foo', 'foo_inner', 5], $container->getDefinition('child1')->getDecoratedService());
     }
 
     public function testDecoratedServiceCopiesDeprecatedStatusFromParent()
@@ -347,10 +347,10 @@ public function testProcessMergeAutowiringTypes()
         $this->process($container);
 
         $childDef = $container->getDefinition('child');
-        $this->assertEquals(array('Foo', 'Bar'), $childDef->getAutowiringTypes());
+        $this->assertEquals(['Foo', 'Bar'], $childDef->getAutowiringTypes());
 
         $parentDef = $container->getDefinition('parent');
-        $this->assertSame(array('Foo'), $parentDef->getAutowiringTypes());
+        $this->assertSame(['Foo'], $parentDef->getAutowiringTypes());
     }
 
     public function testProcessResolvesAliases()
@@ -371,17 +371,17 @@ public function testProcessSetsArguments()
     {
         $container = new ContainerBuilder();
 
-        $container->register('parent', 'ParentClass')->setArguments(array(0));
-        $container->setDefinition('child', (new ChildDefinition('parent'))->setArguments(array(
+        $container->register('parent', 'ParentClass')->setArguments([0]);
+        $container->setDefinition('child', (new ChildDefinition('parent'))->setArguments([
             1,
             'index_0' => 2,
             'foo' => 3,
-        )));
+        ]));
 
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertSame(array(2, 1, 'foo' => 3), $def->getArguments());
+        $this->assertSame([2, 1, 'foo' => 3], $def->getArguments());
     }
 
     public function testSetAutoconfiguredOnServiceIsParent()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveFactoryClassPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveFactoryClassPassTest.php
index 96453c30381e..3438fad0689f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveFactoryClassPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveFactoryClassPassTest.php
@@ -24,12 +24,12 @@ public function testProcess()
         $container = new ContainerBuilder();
 
         $factory = $container->register('factory', 'Foo\Bar');
-        $factory->setFactory(array(null, 'create'));
+        $factory->setFactory([null, 'create']);
 
         $pass = new ResolveFactoryClassPass();
         $pass->process($container);
 
-        $this->assertSame(array('Foo\Bar', 'create'), $factory->getFactory());
+        $this->assertSame(['Foo\Bar', 'create'], $factory->getFactory());
     }
 
     public function testInlinedDefinitionFactoryIsProcessed()
@@ -37,21 +37,21 @@ public function testInlinedDefinitionFactoryIsProcessed()
         $container = new ContainerBuilder();
 
         $factory = $container->register('factory');
-        $factory->setFactory(array((new Definition('Baz\Qux'))->setFactory(array(null, 'getInstance')), 'create'));
+        $factory->setFactory([(new Definition('Baz\Qux'))->setFactory([null, 'getInstance']), 'create']);
 
         $pass = new ResolveFactoryClassPass();
         $pass->process($container);
 
-        $this->assertSame(array('Baz\Qux', 'getInstance'), $factory->getFactory()[0]->getFactory());
+        $this->assertSame(['Baz\Qux', 'getInstance'], $factory->getFactory()[0]->getFactory());
     }
 
     public function provideFulfilledFactories()
     {
-        return array(
-            array(array('Foo\Bar', 'create')),
-            array(array(new Reference('foo'), 'create')),
-            array(array(new Definition('Baz'), 'create')),
-        );
+        return [
+            [['Foo\Bar', 'create']],
+            [[new Reference('foo'), 'create']],
+            [[new Definition('Baz'), 'create']],
+        ];
     }
 
     /**
@@ -80,7 +80,7 @@ public function testNotAnyClassThrowsException()
         $container = new ContainerBuilder();
 
         $factory = $container->register('factory');
-        $factory->setFactory(array(null, 'create'));
+        $factory->setFactory([null, 'create']);
 
         $pass = new ResolveFactoryClassPass();
         $pass->process($container);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveHotPathPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveHotPathPassTest.php
index d2ba590047ca..a2fece0580b8 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveHotPathPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveHotPathPassTest.php
@@ -26,9 +26,9 @@ public function testProcess()
 
         $container->register('foo')
             ->addTag('container.hot_path')
-            ->addArgument(new IteratorArgument(array(new Reference('lazy'))))
+            ->addArgument(new IteratorArgument([new Reference('lazy')]))
             ->addArgument(new Reference('service_container'))
-            ->addArgument(new Definition('', array(new Reference('bar'))))
+            ->addArgument(new Definition('', [new Reference('bar')]))
             ->addArgument(new Reference('baz', ContainerBuilder::IGNORE_ON_UNINITIALIZED_REFERENCE))
             ->addArgument(new Reference('missing'))
         ;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
index ad6f79d4051b..26560b4ca324 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
@@ -23,10 +23,10 @@ class ResolveInstanceofConditionalsPassTest extends TestCase
     public function testProcess()
     {
         $container = new ContainerBuilder();
-        $def = $container->register('foo', self::class)->addTag('tag')->setAutowired(true)->setChanges(array());
-        $def->setInstanceofConditionals(array(
-            parent::class => (new ChildDefinition(''))->setProperty('foo', 'bar')->addTag('baz', array('attr' => 123)),
-        ));
+        $def = $container->register('foo', self::class)->addTag('tag')->setAutowired(true)->setChanges([]);
+        $def->setInstanceofConditionals([
+            parent::class => (new ChildDefinition(''))->setProperty('foo', 'bar')->addTag('baz', ['attr' => 123]),
+        ]);
 
         (new ResolveInstanceofConditionalsPass())->process($container);
 
@@ -36,11 +36,11 @@ public function testProcess()
         $this->assertInstanceOf(ChildDefinition::class, $def);
         $this->assertTrue($def->isAutowired());
         $this->assertSame($parent, $def->getParent());
-        $this->assertSame(array('tag' => array(array()), 'baz' => array(array('attr' => 123))), $def->getTags());
+        $this->assertSame(['tag' => [[]], 'baz' => [['attr' => 123]]], $def->getTags());
 
         $parent = $container->getDefinition($parent);
-        $this->assertSame(array('foo' => 'bar'), $parent->getProperties());
-        $this->assertSame(array(), $parent->getTags());
+        $this->assertSame(['foo' => 'bar'], $parent->getProperties());
+        $this->assertSame([], $parent->getTags());
     }
 
     public function testProcessInheritance()
@@ -49,10 +49,10 @@ public function testProcessInheritance()
 
         $def = $container
             ->register('parent', parent::class)
-            ->addMethodCall('foo', array('foo'));
-        $def->setInstanceofConditionals(array(
-            parent::class => (new ChildDefinition(''))->addMethodCall('foo', array('bar')),
-        ));
+            ->addMethodCall('foo', ['foo']);
+        $def->setInstanceofConditionals([
+            parent::class => (new ChildDefinition(''))->addMethodCall('foo', ['bar']),
+        ]);
 
         $def = (new ChildDefinition('parent'))->setClass(self::class);
         $container->setDefinition('child', $def);
@@ -60,10 +60,10 @@ public function testProcessInheritance()
         (new ResolveInstanceofConditionalsPass())->process($container);
         (new ResolveChildDefinitionsPass())->process($container);
 
-        $expected = array(
-            array('foo', array('bar')),
-            array('foo', array('foo')),
-        );
+        $expected = [
+            ['foo', ['bar']],
+            ['foo', ['foo']],
+        ];
 
         $this->assertSame($expected, $container->getDefinition('parent')->getMethodCalls());
         $this->assertSame($expected, $container->getDefinition('child')->getMethodCalls());
@@ -74,9 +74,9 @@ public function testProcessDoesReplaceShared()
         $container = new ContainerBuilder();
 
         $def = $container->register('foo', 'stdClass');
-        $def->setInstanceofConditionals(array(
+        $def->setInstanceofConditionals([
             'stdClass' => (new ChildDefinition(''))->setShared(false),
-        ));
+        ]);
 
         (new ResolveInstanceofConditionalsPass())->process($container);
 
@@ -90,10 +90,10 @@ public function testProcessHandlesMultipleInheritance()
 
         $def = $container->register('foo', self::class)->setShared(true);
 
-        $def->setInstanceofConditionals(array(
+        $def->setInstanceofConditionals([
             parent::class => (new ChildDefinition(''))->setLazy(true)->setShared(false),
             self::class => (new ChildDefinition(''))->setAutowired(true),
-        ));
+        ]);
 
         (new ResolveInstanceofConditionalsPass())->process($container);
         (new ResolveChildDefinitionsPass())->process($container);
@@ -108,11 +108,11 @@ public function testProcessUsesAutoconfiguredInstanceof()
     {
         $container = new ContainerBuilder();
         $def = $container->register('normal_service', self::class);
-        $def->setInstanceofConditionals(array(
+        $def->setInstanceofConditionals([
             parent::class => (new ChildDefinition(''))
                 ->addTag('local_instanceof_tag')
                 ->setFactory('locally_set_factory'),
-        ));
+        ]);
         $def->setAutoconfigured(true);
         $container->registerForAutoconfiguration(parent::class)
             ->addTag('autoconfigured_tag')
@@ -128,7 +128,7 @@ public function testProcessUsesAutoconfiguredInstanceof()
         // factory from the specific instanceof overrides global one
         $this->assertEquals('locally_set_factory', $def->getFactory());
         // tags are merged, the locally set one is first
-        $this->assertSame(array('local_instanceof_tag' => array(array()), 'autoconfigured_tag' => array(array())), $def->getTags());
+        $this->assertSame(['local_instanceof_tag' => [[]], 'autoconfigured_tag' => [[]]], $def->getTags());
     }
 
     public function testAutoconfigureInstanceofDoesNotDuplicateTags()
@@ -137,31 +137,31 @@ public function testAutoconfigureInstanceofDoesNotDuplicateTags()
         $def = $container->register('normal_service', self::class);
         $def
             ->addTag('duplicated_tag')
-            ->addTag('duplicated_tag', array('and_attributes' => 1))
+            ->addTag('duplicated_tag', ['and_attributes' => 1])
         ;
-        $def->setInstanceofConditionals(array(
+        $def->setInstanceofConditionals([
             parent::class => (new ChildDefinition(''))->addTag('duplicated_tag'),
-        ));
+        ]);
         $def->setAutoconfigured(true);
         $container->registerForAutoconfiguration(parent::class)
-            ->addTag('duplicated_tag', array('and_attributes' => 1))
+            ->addTag('duplicated_tag', ['and_attributes' => 1])
         ;
 
         (new ResolveInstanceofConditionalsPass())->process($container);
         (new ResolveChildDefinitionsPass())->process($container);
 
         $def = $container->getDefinition('normal_service');
-        $this->assertSame(array('duplicated_tag' => array(array(), array('and_attributes' => 1))), $def->getTags());
+        $this->assertSame(['duplicated_tag' => [[], ['and_attributes' => 1]]], $def->getTags());
     }
 
     public function testProcessDoesNotUseAutoconfiguredInstanceofIfNotEnabled()
     {
         $container = new ContainerBuilder();
         $def = $container->register('normal_service', self::class);
-        $def->setInstanceofConditionals(array(
+        $def->setInstanceofConditionals([
             parent::class => (new ChildDefinition(''))
                 ->addTag('foo_tag'),
-        ));
+        ]);
         $container->registerForAutoconfiguration(parent::class)
             ->setAutowired(true);
 
@@ -180,10 +180,10 @@ public function testBadInterfaceThrowsException()
     {
         $container = new ContainerBuilder();
         $def = $container->register('normal_service', self::class);
-        $def->setInstanceofConditionals(array(
+        $def->setInstanceofConditionals([
             'App\\FakeInterface' => (new ChildDefinition(''))
                 ->addTag('foo_tag'),
-        ));
+        ]);
 
         (new ResolveInstanceofConditionalsPass())->process($container);
     }
@@ -236,9 +236,9 @@ public function testMergeReset()
             ->addMethodCall('setB')
             ->setDecoratedService('foo')
             ->addTag('t')
-            ->setInstanceofConditionals(array(
+            ->setInstanceofConditionals([
                 parent::class => (new ChildDefinition(''))->addTag('bar'),
-            ))
+            ])
         ;
 
         (new ResolveInstanceofConditionalsPass())->process($container);
@@ -255,13 +255,13 @@ public function testMergeReset()
     public function testBindings()
     {
         $container = new ContainerBuilder();
-        $def = $container->register('foo', self::class)->setBindings(array('$toto' => 123));
-        $def->setInstanceofConditionals(array(parent::class => new ChildDefinition('')));
+        $def = $container->register('foo', self::class)->setBindings(['$toto' => 123]);
+        $def->setInstanceofConditionals([parent::class => new ChildDefinition('')]);
 
         (new ResolveInstanceofConditionalsPass())->process($container);
 
         $bindings = $container->getDefinition('foo')->getBindings();
-        $this->assertSame(array('$toto'), array_keys($bindings));
+        $this->assertSame(['$toto'], array_keys($bindings));
         $this->assertInstanceOf(BoundArgument::class, $bindings['$toto']);
         $this->assertSame(123, $bindings['$toto']->getValues()[0]);
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInvalidReferencesPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInvalidReferencesPassTest.php
index 61bad48a5466..817cc64ce31d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInvalidReferencesPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInvalidReferencesPassTest.php
@@ -25,17 +25,17 @@ public function testProcess()
         $container = new ContainerBuilder();
         $def = $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                 new Reference('bar', ContainerInterface::NULL_ON_INVALID_REFERENCE),
                 new Reference('baz', ContainerInterface::IGNORE_ON_INVALID_REFERENCE),
-            ))
-            ->addMethodCall('foo', array(new Reference('moo', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)))
+            ])
+            ->addMethodCall('foo', [new Reference('moo', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)])
         ;
 
         $this->process($container);
 
         $arguments = $def->getArguments();
-        $this->assertSame(array(null, null), $arguments);
+        $this->assertSame([null, null], $arguments);
         $this->assertCount(0, $def->getMethodCalls());
     }
 
@@ -45,19 +45,19 @@ public function testProcessIgnoreInvalidArgumentInCollectionArgument()
         $container->register('baz');
         $def = $container
             ->register('foo')
-            ->setArguments(array(
-                array(
+            ->setArguments([
+                [
                     new Reference('bar', ContainerInterface::IGNORE_ON_INVALID_REFERENCE),
                     $baz = new Reference('baz', ContainerInterface::IGNORE_ON_INVALID_REFERENCE),
                     new Reference('moo', ContainerInterface::NULL_ON_INVALID_REFERENCE),
-                ),
-            ))
+                ],
+            ])
         ;
 
         $this->process($container);
 
         $arguments = $def->getArguments();
-        $this->assertSame(array($baz, null), $arguments[0]);
+        $this->assertSame([$baz, null], $arguments[0]);
     }
 
     public function testProcessKeepMethodCallOnInvalidArgumentInCollectionArgument()
@@ -66,20 +66,20 @@ public function testProcessKeepMethodCallOnInvalidArgumentInCollectionArgument()
         $container->register('baz');
         $def = $container
             ->register('foo')
-            ->addMethodCall('foo', array(
-                array(
+            ->addMethodCall('foo', [
+                [
                     new Reference('bar', ContainerInterface::IGNORE_ON_INVALID_REFERENCE),
                     $baz = new Reference('baz', ContainerInterface::IGNORE_ON_INVALID_REFERENCE),
                     new Reference('moo', ContainerInterface::NULL_ON_INVALID_REFERENCE),
-                ),
-            ))
+                ],
+            ])
         ;
 
         $this->process($container);
 
         $calls = $def->getMethodCalls();
         $this->assertCount(1, $def->getMethodCalls());
-        $this->assertSame(array($baz, null), $calls[0][1][0]);
+        $this->assertSame([$baz, null], $calls[0][1][0]);
     }
 
     public function testProcessIgnoreNonExistentServices()
@@ -87,7 +87,7 @@ public function testProcessIgnoreNonExistentServices()
         $container = new ContainerBuilder();
         $def = $container
             ->register('foo')
-            ->setArguments(array(new Reference('bar')))
+            ->setArguments([new Reference('bar')])
         ;
 
         $this->process($container);
@@ -106,7 +106,7 @@ public function testProcessRemovesPropertiesOnInvalid()
 
         $this->process($container);
 
-        $this->assertEquals(array(), $def->getProperties());
+        $this->assertEquals([], $def->getProperties());
     }
 
     public function testProcessRemovesArgumentsOnInvalid()
@@ -114,17 +114,17 @@ public function testProcessRemovesArgumentsOnInvalid()
         $container = new ContainerBuilder();
         $def = $container
             ->register('foo')
-            ->addArgument(array(
-                array(
+            ->addArgument([
+                [
                     new Reference('bar', ContainerInterface::IGNORE_ON_INVALID_REFERENCE),
                     new ServiceClosureArgument(new Reference('baz', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
-                ),
-            ))
+                ],
+            ])
         ;
 
         $this->process($container);
 
-        $this->assertSame(array(array(array())), $def->getArguments());
+        $this->assertSame([[[]]], $def->getArguments());
     }
 
     protected function process(ContainerBuilder $container)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveNamedArgumentsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveNamedArgumentsPassTest.php
index 17b8ebf31a00..e25d96f5396c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveNamedArgumentsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveNamedArgumentsPassTest.php
@@ -31,18 +31,18 @@ public function testProcess()
         $container = new ContainerBuilder();
 
         $definition = $container->register(NamedArgumentsDummy::class, NamedArgumentsDummy::class);
-        $definition->setArguments(array(
+        $definition->setArguments([
             2 => 'http://api.example.com',
             '$apiKey' => '123',
             0 => new Reference('foo'),
-        ));
-        $definition->addMethodCall('setApiKey', array('$apiKey' => '123'));
+        ]);
+        $definition->addMethodCall('setApiKey', ['$apiKey' => '123']);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
 
-        $this->assertEquals(array(0 => new Reference('foo'), 1 => '123', 2 => 'http://api.example.com'), $definition->getArguments());
-        $this->assertEquals(array(array('setApiKey', array('123'))), $definition->getMethodCalls());
+        $this->assertEquals([0 => new Reference('foo'), 1 => '123', 2 => 'http://api.example.com'], $definition->getArguments());
+        $this->assertEquals([['setApiKey', ['123']]], $definition->getMethodCalls());
     }
 
     public function testWithFactory()
@@ -51,13 +51,13 @@ public function testWithFactory()
 
         $container->register('factory', NoConstructor::class);
         $definition = $container->register('foo', NoConstructor::class)
-            ->setFactory(array(new Reference('factory'), 'create'))
-            ->setArguments(array('$apiKey' => '123'));
+            ->setFactory([new Reference('factory'), 'create'])
+            ->setArguments(['$apiKey' => '123']);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
 
-        $this->assertSame(array(0 => '123'), $definition->getArguments());
+        $this->assertSame([0 => '123'], $definition->getArguments());
     }
 
     /**
@@ -68,7 +68,7 @@ public function testClassNull()
         $container = new ContainerBuilder();
 
         $definition = $container->register(NamedArgumentsDummy::class);
-        $definition->setArguments(array('$apiKey' => '123'));
+        $definition->setArguments(['$apiKey' => '123']);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
@@ -82,7 +82,7 @@ public function testClassNotExist()
         $container = new ContainerBuilder();
 
         $definition = $container->register(NotExist::class, NotExist::class);
-        $definition->setArguments(array('$apiKey' => '123'));
+        $definition->setArguments(['$apiKey' => '123']);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
@@ -96,7 +96,7 @@ public function testClassNoConstructor()
         $container = new ContainerBuilder();
 
         $definition = $container->register(NoConstructor::class, NoConstructor::class);
-        $definition->setArguments(array('$apiKey' => '123'));
+        $definition->setArguments(['$apiKey' => '123']);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
@@ -111,7 +111,7 @@ public function testArgumentNotFound()
         $container = new ContainerBuilder();
 
         $definition = $container->register(NamedArgumentsDummy::class, NamedArgumentsDummy::class);
-        $definition->setArguments(array('$notFound' => '123'));
+        $definition->setArguments(['$notFound' => '123']);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
@@ -128,8 +128,8 @@ public function testCorrectMethodReportedInException()
         $container->register(FactoryDummyWithoutReturnTypes::class, FactoryDummyWithoutReturnTypes::class);
 
         $definition = $container->register(TestDefinition1::class, TestDefinition1::class);
-        $definition->setFactory(array(FactoryDummyWithoutReturnTypes::class, 'createTestDefinition1'));
-        $definition->setArguments(array('$notFound' => '123'));
+        $definition->setFactory([FactoryDummyWithoutReturnTypes::class, 'createTestDefinition1']);
+        $definition->setArguments(['$notFound' => '123']);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
@@ -140,12 +140,12 @@ public function testTypedArgument()
         $container = new ContainerBuilder();
 
         $definition = $container->register(NamedArgumentsDummy::class, NamedArgumentsDummy::class);
-        $definition->setArguments(array('$apiKey' => '123', CaseSensitiveClass::class => new Reference('foo')));
+        $definition->setArguments(['$apiKey' => '123', CaseSensitiveClass::class => new Reference('foo')]);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
 
-        $this->assertEquals(array(new Reference('foo'), '123'), $definition->getArguments());
+        $this->assertEquals([new Reference('foo'), '123'], $definition->getArguments());
     }
 
     public function testResolvesMultipleArgumentsOfTheSameType()
@@ -153,12 +153,12 @@ public function testResolvesMultipleArgumentsOfTheSameType()
         $container = new ContainerBuilder();
 
         $definition = $container->register(SimilarArgumentsDummy::class, SimilarArgumentsDummy::class);
-        $definition->setArguments(array(CaseSensitiveClass::class => new Reference('foo'), '$token' => 'qwerty'));
+        $definition->setArguments([CaseSensitiveClass::class => new Reference('foo'), '$token' => 'qwerty']);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
 
-        $this->assertEquals(array(new Reference('foo'), 'qwerty', new Reference('foo')), $definition->getArguments());
+        $this->assertEquals([new Reference('foo'), 'qwerty', new Reference('foo')], $definition->getArguments());
     }
 
     public function testResolvePrioritizeNamedOverType()
@@ -166,12 +166,12 @@ public function testResolvePrioritizeNamedOverType()
         $container = new ContainerBuilder();
 
         $definition = $container->register(SimilarArgumentsDummy::class, SimilarArgumentsDummy::class);
-        $definition->setArguments(array(CaseSensitiveClass::class => new Reference('foo'), '$token' => 'qwerty', '$class1' => new Reference('bar')));
+        $definition->setArguments([CaseSensitiveClass::class => new Reference('foo'), '$token' => 'qwerty', '$class1' => new Reference('bar')]);
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
 
-        $this->assertEquals(array(new Reference('bar'), 'qwerty', new Reference('foo')), $definition->getArguments());
+        $this->assertEquals([new Reference('bar'), 'qwerty', new Reference('foo')], $definition->getArguments());
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveParameterPlaceHoldersPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveParameterPlaceHoldersPassTest.php
index a34e007de7f0..5aa6471751f2 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveParameterPlaceHoldersPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveParameterPlaceHoldersPassTest.php
@@ -36,22 +36,22 @@ public function testClassParametersShouldBeResolved()
 
     public function testFactoryParametersShouldBeResolved()
     {
-        $this->assertSame(array('FooFactory', 'getFoo'), $this->fooDefinition->getFactory());
+        $this->assertSame(['FooFactory', 'getFoo'], $this->fooDefinition->getFactory());
     }
 
     public function testArgumentParametersShouldBeResolved()
     {
-        $this->assertSame(array('bar', array('bar' => 'baz')), $this->fooDefinition->getArguments());
+        $this->assertSame(['bar', ['bar' => 'baz']], $this->fooDefinition->getArguments());
     }
 
     public function testMethodCallParametersShouldBeResolved()
     {
-        $this->assertSame(array(array('foobar', array('bar', array('bar' => 'baz')))), $this->fooDefinition->getMethodCalls());
+        $this->assertSame([['foobar', ['bar', ['bar' => 'baz']]]], $this->fooDefinition->getMethodCalls());
     }
 
     public function testPropertyParametersShouldBeResolved()
     {
-        $this->assertSame(array('bar' => 'baz'), $this->fooDefinition->getProperties());
+        $this->assertSame(['bar' => 'baz'], $this->fooDefinition->getProperties());
     }
 
     public function testFileParametersShouldBeResolved()
@@ -78,7 +78,7 @@ private function createContainerBuilder()
         $containerBuilder->setParameter('foo.class', 'Foo');
         $containerBuilder->setParameter('foo.factory.class', 'FooFactory');
         $containerBuilder->setParameter('foo.arg1', 'bar');
-        $containerBuilder->setParameter('foo.arg2', array('%foo.arg1%' => 'baz'));
+        $containerBuilder->setParameter('foo.arg2', ['%foo.arg1%' => 'baz']);
         $containerBuilder->setParameter('foo.method', 'foobar');
         $containerBuilder->setParameter('foo.property.name', 'bar');
         $containerBuilder->setParameter('foo.property.value', 'baz');
@@ -86,12 +86,12 @@ private function createContainerBuilder()
         $containerBuilder->setParameter('alias.id', 'bar');
 
         $fooDefinition = $containerBuilder->register('foo', '%foo.class%');
-        $fooDefinition->setFactory(array('%foo.factory.class%', 'getFoo'));
-        $fooDefinition->setArguments(array('%foo.arg1%', array('%foo.arg1%' => 'baz')));
-        $fooDefinition->addMethodCall('%foo.method%', array('%foo.arg1%', '%foo.arg2%'));
+        $fooDefinition->setFactory(['%foo.factory.class%', 'getFoo']);
+        $fooDefinition->setArguments(['%foo.arg1%', ['%foo.arg1%' => 'baz']]);
+        $fooDefinition->addMethodCall('%foo.method%', ['%foo.arg1%', '%foo.arg2%']);
         $fooDefinition->setProperty('%foo.property.name%', '%foo.property.value%');
         $fooDefinition->setFile('%foo.file%');
-        $fooDefinition->setBindings(array('$baz' => '%env(BAZ)%'));
+        $fooDefinition->setBindings(['$baz' => '%env(BAZ)%']);
 
         $containerBuilder->setAlias('%alias.id%', 'foo');
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveReferencesToAliasesPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveReferencesToAliasesPassTest.php
index 6fb619718a64..55b47057b1fd 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveReferencesToAliasesPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveReferencesToAliasesPassTest.php
@@ -26,7 +26,7 @@ public function testProcess()
         $container->setAlias('bar', 'foo');
         $def = $container
             ->register('moo')
-            ->setArguments(array(new Reference('bar')))
+            ->setArguments([new Reference('bar')])
         ;
 
         $this->process($container);
@@ -42,7 +42,7 @@ public function testProcessRecursively()
         $container->setAlias('moo', 'bar');
         $def = $container
             ->register('foobar')
-            ->setArguments(array(new Reference('moo')))
+            ->setArguments([new Reference('moo')])
         ;
 
         $this->process($container);
@@ -68,10 +68,10 @@ public function testResolveFactory()
         $container->register('factory', 'Factory');
         $container->setAlias('factory_alias', new Alias('factory'));
         $foo = new Definition();
-        $foo->setFactory(array(new Reference('factory_alias'), 'createFoo'));
+        $foo->setFactory([new Reference('factory_alias'), 'createFoo']);
         $container->setDefinition('foo', $foo);
         $bar = new Definition();
-        $bar->setFactory(array('Factory', 'createFoo'));
+        $bar->setFactory(['Factory', 'createFoo']);
         $container->setDefinition('bar', $bar);
 
         $this->process($container);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveTaggedIteratorArgumentPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveTaggedIteratorArgumentPassTest.php
index a219f860078b..2322817e8666 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveTaggedIteratorArgumentPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveTaggedIteratorArgumentPassTest.php
@@ -26,15 +26,15 @@ public function testProcess()
     {
         $container = new ContainerBuilder();
         $container->register('a', 'stdClass')->addTag('foo');
-        $container->register('b', 'stdClass')->addTag('foo', array('priority' => 20));
-        $container->register('c', 'stdClass')->addTag('foo', array('priority' => 10));
+        $container->register('b', 'stdClass')->addTag('foo', ['priority' => 20]);
+        $container->register('c', 'stdClass')->addTag('foo', ['priority' => 10]);
         $container->register('d', 'stdClass')->setProperty('foos', new TaggedIteratorArgument('foo'));
 
         (new ResolveTaggedIteratorArgumentPass())->process($container);
 
         $properties = $container->getDefinition('d')->getProperties();
         $expected = new TaggedIteratorArgument('foo');
-        $expected->setValues(array(new Reference('b'), new Reference('c'), new Reference('a')));
+        $expected->setValues([new Reference('b'), new Reference('c'), new Reference('a')]);
         $this->assertEquals($expected, $properties['foos']);
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Config/AutowireServiceResourceTest.php b/src/Symfony/Component/DependencyInjection/Tests/Config/AutowireServiceResourceTest.php
index 64d99e6375b8..153e0807ef86 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Config/AutowireServiceResourceTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Config/AutowireServiceResourceTest.php
@@ -38,7 +38,7 @@ protected function setUp()
         $this->resource = new AutowireServiceResource(
             $this->class,
             $this->file,
-            array()
+            []
         );
     }
 
@@ -73,7 +73,7 @@ public function testIsNotFreshChangedResource()
         $oldResource = new AutowireServiceResource(
             $this->class,
             $this->file,
-            array('will_be_different')
+            ['will_be_different']
         );
 
         // test with a stale file *and* a resource that *will* be different than the actual
@@ -95,7 +95,7 @@ public function testNotFreshIfClassNotFound()
         $resource = new AutowireServiceResource(
             'Some\Non\Existent\Class',
             $this->file,
-            array()
+            []
         );
 
         $this->assertFalse($resource->isFresh($this->getStaleFileTime()), '->isFresh() returns false if the class no longer exists');
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Config/ContainerParametersResourceCheckerTest.php b/src/Symfony/Component/DependencyInjection/Tests/Config/ContainerParametersResourceCheckerTest.php
index a91934b3ef8f..fc2d85ecf956 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Config/ContainerParametersResourceCheckerTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Config/ContainerParametersResourceCheckerTest.php
@@ -30,7 +30,7 @@ class ContainerParametersResourceCheckerTest extends TestCase
 
     protected function setUp()
     {
-        $this->resource = new ContainerParametersResource(array('locales' => array('fr', 'en'), 'default_locale' => 'fr'));
+        $this->resource = new ContainerParametersResource(['locales' => ['fr', 'en'], 'default_locale' => 'fr']);
         $this->container = $this->getMockBuilder(ContainerInterface::class)->getMock();
         $this->resourceChecker = new ContainerParametersResourceChecker($this->container);
     }
@@ -52,26 +52,26 @@ public function testIsFresh(callable $mockContainer, $expected)
 
     public function isFreshProvider()
     {
-        yield 'not fresh on missing parameter' => array(function (\PHPUnit_Framework_MockObject_MockObject $container) {
+        yield 'not fresh on missing parameter' => [function (\PHPUnit_Framework_MockObject_MockObject $container) {
             $container->method('hasParameter')->with('locales')->willReturn(false);
-        }, false);
+        }, false];
 
-        yield 'not fresh on different value' => array(function (\PHPUnit_Framework_MockObject_MockObject $container) {
-            $container->method('getParameter')->with('locales')->willReturn(array('nl', 'es'));
-        }, false);
+        yield 'not fresh on different value' => [function (\PHPUnit_Framework_MockObject_MockObject $container) {
+            $container->method('getParameter')->with('locales')->willReturn(['nl', 'es']);
+        }, false];
 
-        yield 'fresh on every identical parameters' => array(function (\PHPUnit_Framework_MockObject_MockObject $container) {
+        yield 'fresh on every identical parameters' => [function (\PHPUnit_Framework_MockObject_MockObject $container) {
             $container->expects($this->exactly(2))->method('hasParameter')->willReturn(true);
             $container->expects($this->exactly(2))->method('getParameter')
                 ->withConsecutive(
-                    array($this->equalTo('locales')),
-                    array($this->equalTo('default_locale'))
+                    [$this->equalTo('locales')],
+                    [$this->equalTo('default_locale')]
                 )
-                ->will($this->returnValueMap(array(
-                    array('locales', array('fr', 'en')),
-                    array('default_locale', 'fr'),
-                )))
+                ->will($this->returnValueMap([
+                    ['locales', ['fr', 'en']],
+                    ['default_locale', 'fr'],
+                ]))
             ;
-        }, true);
+        }, true];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Config/ContainerParametersResourceTest.php b/src/Symfony/Component/DependencyInjection/Tests/Config/ContainerParametersResourceTest.php
index 4da4766f2725..e177ac16b80f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Config/ContainerParametersResourceTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Config/ContainerParametersResourceTest.php
@@ -21,7 +21,7 @@ class ContainerParametersResourceTest extends TestCase
 
     protected function setUp()
     {
-        $this->resource = new ContainerParametersResource(array('locales' => array('fr', 'en'), 'default_locale' => 'fr'));
+        $this->resource = new ContainerParametersResource(['locales' => ['fr', 'en'], 'default_locale' => 'fr']);
     }
 
     public function testToString()
@@ -38,6 +38,6 @@ public function testSerializeUnserialize()
 
     public function testGetParameters()
     {
-        $this->assertSame(array('locales' => array('fr', 'en'), 'default_locale' => 'fr'), $this->resource->getParameters());
+        $this->assertSame(['locales' => ['fr', 'en'], 'default_locale' => 'fr'], $this->resource->getParameters());
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
index 0bf1befa3f84..40afaa169d02 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
@@ -62,10 +62,10 @@ public function testDefaultRegisteredDefinitions()
     public function testDefinitions()
     {
         $builder = new ContainerBuilder();
-        $definitions = array(
+        $definitions = [
             'foo' => new Definition('Bar\FooClass'),
             'bar' => new Definition('BarClass'),
-        );
+        ];
         $builder->setDefinitions($definitions);
         $this->assertEquals($definitions, $builder->getDefinitions(), '->setDefinitions() sets the service definitions');
         $this->assertTrue($builder->hasDefinition('foo'), '->hasDefinition() returns true if a service definition exists');
@@ -75,7 +75,7 @@ public function testDefinitions()
         $this->assertEquals($foo, $builder->getDefinition('foobar'), '->getDefinition() returns a service definition if defined');
         $this->assertSame($builder->setDefinition('foobar', $foo = new Definition('FooBarClass')), $foo, '->setDefinition() implements a fluid interface by returning the service reference');
 
-        $builder->addDefinitions($defs = array('foobar' => new Definition('FooBarClass')));
+        $builder->addDefinitions($defs = ['foobar' => new Definition('FooBarClass')]);
         $this->assertEquals(array_merge($definitions, $defs), $builder->getDefinitions(), '->addDefinitions() adds the service definitions');
 
         try {
@@ -150,7 +150,7 @@ public function testGetReturnsNullIfServiceDoesNotExistAndInvalidReferenceIsUsed
     public function testGetThrowsCircularReferenceExceptionIfServiceHasReferenceToItself()
     {
         $builder = new ContainerBuilder();
-        $builder->register('baz', 'stdClass')->setArguments(array(new Reference('baz')));
+        $builder->register('baz', 'stdClass')->setArguments([new Reference('baz')]);
         $builder->get('baz');
     }
 
@@ -221,13 +221,13 @@ public function testGetServiceIds()
         $builder->bar = $bar = new \stdClass();
         $builder->register('bar', 'stdClass');
         $this->assertEquals(
-            array(
+            [
                 'service_container',
                 'foo',
                 'bar',
                 'Psr\Container\ContainerInterface',
                 'Symfony\Component\DependencyInjection\ContainerInterface',
-            ),
+            ],
             $builder->getServiceIds(),
             '->getServiceIds() returns all defined service ids'
         );
@@ -284,7 +284,7 @@ public function testGetAliases()
     public function testSetAliases()
     {
         $builder = new ContainerBuilder();
-        $builder->setAliases(array('bar' => 'foo', 'foobar' => 'foo'));
+        $builder->setAliases(['bar' => 'foo', 'foobar' => 'foo']);
 
         $aliases = $builder->getAliases();
         $this->assertArrayHasKey('bar', $aliases);
@@ -294,8 +294,8 @@ public function testSetAliases()
     public function testAddAliases()
     {
         $builder = new ContainerBuilder();
-        $builder->setAliases(array('bar' => 'foo'));
-        $builder->addAliases(array('foobar' => 'foo'));
+        $builder->setAliases(['bar' => 'foo']);
+        $builder->addAliases(['foobar' => 'foo']);
 
         $aliases = $builder->getAliases();
         $this->assertArrayHasKey('bar', $aliases);
@@ -317,7 +317,7 @@ public function testAliasesKeepInvalidBehavior()
         $builder = new ContainerBuilder();
 
         $aliased = new Definition('stdClass');
-        $aliased->addMethodCall('setBar', array(new Reference('bar', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
+        $aliased->addMethodCall('setBar', [new Reference('bar', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)]);
         $builder->setDefinition('aliased', $aliased);
         $builder->setAlias('alias', 'aliased');
 
@@ -373,18 +373,18 @@ public function testCreateServiceArguments()
     {
         $builder = new ContainerBuilder();
         $builder->register('bar', 'stdClass');
-        $builder->register('foo1', 'Bar\FooClass')->addArgument(array('foo' => '%value%', '%value%' => 'foo', new Reference('bar'), '%%unescape_it%%'));
+        $builder->register('foo1', 'Bar\FooClass')->addArgument(['foo' => '%value%', '%value%' => 'foo', new Reference('bar'), '%%unescape_it%%']);
         $builder->setParameter('value', 'bar');
-        $this->assertEquals(array('foo' => 'bar', 'bar' => 'foo', $builder->get('bar'), '%unescape_it%'), $builder->get('foo1')->arguments, '->createService() replaces parameters and service references in the arguments provided by the service definition');
+        $this->assertEquals(['foo' => 'bar', 'bar' => 'foo', $builder->get('bar'), '%unescape_it%'], $builder->get('foo1')->arguments, '->createService() replaces parameters and service references in the arguments provided by the service definition');
     }
 
     public function testCreateServiceFactory()
     {
         $builder = new ContainerBuilder();
         $builder->register('foo', 'Bar\FooClass')->setFactory('Bar\FooClass::getInstance');
-        $builder->register('qux', 'Bar\FooClass')->setFactory(array('Bar\FooClass', 'getInstance'));
-        $builder->register('bar', 'Bar\FooClass')->setFactory(array(new Definition('Bar\FooClass'), 'getInstance'));
-        $builder->register('baz', 'Bar\FooClass')->setFactory(array(new Reference('bar'), 'getInstance'));
+        $builder->register('qux', 'Bar\FooClass')->setFactory(['Bar\FooClass', 'getInstance']);
+        $builder->register('bar', 'Bar\FooClass')->setFactory([new Definition('Bar\FooClass'), 'getInstance']);
+        $builder->register('baz', 'Bar\FooClass')->setFactory([new Reference('bar'), 'getInstance']);
 
         $this->assertTrue($builder->get('foo')->called, '->createService() calls the factory method to create the service instance');
         $this->assertTrue($builder->get('qux')->called, '->createService() calls the factory method to create the service instance');
@@ -396,38 +396,38 @@ public function testCreateServiceMethodCalls()
     {
         $builder = new ContainerBuilder();
         $builder->register('bar', 'stdClass');
-        $builder->register('foo1', 'Bar\FooClass')->addMethodCall('setBar', array(array('%value%', new Reference('bar'))));
+        $builder->register('foo1', 'Bar\FooClass')->addMethodCall('setBar', [['%value%', new Reference('bar')]]);
         $builder->setParameter('value', 'bar');
-        $this->assertEquals(array('bar', $builder->get('bar')), $builder->get('foo1')->bar, '->createService() replaces the values in the method calls arguments');
+        $this->assertEquals(['bar', $builder->get('bar')], $builder->get('foo1')->bar, '->createService() replaces the values in the method calls arguments');
     }
 
     public function testCreateServiceMethodCallsWithEscapedParam()
     {
         $builder = new ContainerBuilder();
         $builder->register('bar', 'stdClass');
-        $builder->register('foo1', 'Bar\FooClass')->addMethodCall('setBar', array(array('%%unescape_it%%')));
+        $builder->register('foo1', 'Bar\FooClass')->addMethodCall('setBar', [['%%unescape_it%%']]);
         $builder->setParameter('value', 'bar');
-        $this->assertEquals(array('%unescape_it%'), $builder->get('foo1')->bar, '->createService() replaces the values in the method calls arguments');
+        $this->assertEquals(['%unescape_it%'], $builder->get('foo1')->bar, '->createService() replaces the values in the method calls arguments');
     }
 
     public function testCreateServiceProperties()
     {
         $builder = new ContainerBuilder();
         $builder->register('bar', 'stdClass');
-        $builder->register('foo1', 'Bar\FooClass')->setProperty('bar', array('%value%', new Reference('bar'), '%%unescape_it%%'));
+        $builder->register('foo1', 'Bar\FooClass')->setProperty('bar', ['%value%', new Reference('bar'), '%%unescape_it%%']);
         $builder->setParameter('value', 'bar');
-        $this->assertEquals(array('bar', $builder->get('bar'), '%unescape_it%'), $builder->get('foo1')->bar, '->createService() replaces the values in the properties');
+        $this->assertEquals(['bar', $builder->get('bar'), '%unescape_it%'], $builder->get('foo1')->bar, '->createService() replaces the values in the properties');
     }
 
     public function testCreateServiceConfigurator()
     {
         $builder = new ContainerBuilder();
         $builder->register('foo1', 'Bar\FooClass')->setConfigurator('sc_configure');
-        $builder->register('foo2', 'Bar\FooClass')->setConfigurator(array('%class%', 'configureStatic'));
+        $builder->register('foo2', 'Bar\FooClass')->setConfigurator(['%class%', 'configureStatic']);
         $builder->setParameter('class', 'BazClass');
         $builder->register('baz', 'BazClass');
-        $builder->register('foo3', 'Bar\FooClass')->setConfigurator(array(new Reference('baz'), 'configure'));
-        $builder->register('foo4', 'Bar\FooClass')->setConfigurator(array($builder->getDefinition('baz'), 'configure'));
+        $builder->register('foo3', 'Bar\FooClass')->setConfigurator([new Reference('baz'), 'configure']);
+        $builder->register('foo4', 'Bar\FooClass')->setConfigurator([$builder->getDefinition('baz'), 'configure']);
         $builder->register('foo5', 'Bar\FooClass')->setConfigurator('foo');
 
         $this->assertTrue($builder->get('foo1')->configured, '->createService() calls the configurator');
@@ -449,10 +449,10 @@ public function testCreateServiceWithIteratorArgument()
         $builder->register('bar', 'stdClass');
         $builder
             ->register('lazy_context', 'LazyContext')
-            ->setArguments(array(
-                new IteratorArgument(array('k1' => new Reference('bar'), new Reference('invalid', ContainerInterface::IGNORE_ON_INVALID_REFERENCE))),
-                new IteratorArgument(array()),
-            ))
+            ->setArguments([
+                new IteratorArgument(['k1' => new Reference('bar'), new Reference('invalid', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)]),
+                new IteratorArgument([]),
+            ])
         ;
 
         $lazyContext = $builder->get('lazy_context');
@@ -494,7 +494,7 @@ public function testCreateServiceWithExpression()
         $builder = new ContainerBuilder();
         $builder->setParameter('bar', 'bar');
         $builder->register('bar', 'BarClass');
-        $builder->register('foo', 'Bar\FooClass')->addArgument(array('foo' => new Expression('service("bar").foo ~ parameter("bar")')));
+        $builder->register('foo', 'Bar\FooClass')->addArgument(['foo' => new Expression('service("bar").foo ~ parameter("bar")')]);
         $this->assertEquals('foobar', $builder->get('foo')->arguments['foo']);
     }
 
@@ -503,7 +503,7 @@ public function testResolveServices()
         $builder = new ContainerBuilder();
         $builder->register('foo', 'Bar\FooClass');
         $this->assertEquals($builder->get('foo'), $builder->resolveServices(new Reference('foo')), '->resolveServices() resolves service references to service instances');
-        $this->assertEquals(array('foo' => array('foo', $builder->get('foo'))), $builder->resolveServices(array('foo' => array('foo', new Reference('foo')))), '->resolveServices() resolves service references to service instances in nested arrays');
+        $this->assertEquals(['foo' => ['foo', $builder->get('foo')]], $builder->resolveServices(['foo' => ['foo', new Reference('foo')]]), '->resolveServices() resolves service references to service instances in nested arrays');
         $this->assertEquals($builder->get('foo'), $builder->resolveServices(new Expression('service("foo")')), '->resolveServices() resolves expressions');
     }
 
@@ -531,25 +531,25 @@ public function testResolveServicesWithCustomDefinitionClass()
 
     public function testMerge()
     {
-        $container = new ContainerBuilder(new ParameterBag(array('bar' => 'foo')));
+        $container = new ContainerBuilder(new ParameterBag(['bar' => 'foo']));
         $container->setResourceTracking(false);
-        $config = new ContainerBuilder(new ParameterBag(array('foo' => 'bar')));
+        $config = new ContainerBuilder(new ParameterBag(['foo' => 'bar']));
         $container->merge($config);
-        $this->assertEquals(array('bar' => 'foo', 'foo' => 'bar'), $container->getParameterBag()->all(), '->merge() merges current parameters with the loaded ones');
+        $this->assertEquals(['bar' => 'foo', 'foo' => 'bar'], $container->getParameterBag()->all(), '->merge() merges current parameters with the loaded ones');
 
-        $container = new ContainerBuilder(new ParameterBag(array('bar' => 'foo')));
+        $container = new ContainerBuilder(new ParameterBag(['bar' => 'foo']));
         $container->setResourceTracking(false);
-        $config = new ContainerBuilder(new ParameterBag(array('foo' => '%bar%')));
+        $config = new ContainerBuilder(new ParameterBag(['foo' => '%bar%']));
         $container->merge($config);
         $container->compile();
-        $this->assertEquals(array('bar' => 'foo', 'foo' => 'foo'), $container->getParameterBag()->all(), '->merge() evaluates the values of the parameters towards already defined ones');
+        $this->assertEquals(['bar' => 'foo', 'foo' => 'foo'], $container->getParameterBag()->all(), '->merge() evaluates the values of the parameters towards already defined ones');
 
-        $container = new ContainerBuilder(new ParameterBag(array('bar' => 'foo')));
+        $container = new ContainerBuilder(new ParameterBag(['bar' => 'foo']));
         $container->setResourceTracking(false);
-        $config = new ContainerBuilder(new ParameterBag(array('foo' => '%bar%', 'baz' => '%foo%')));
+        $config = new ContainerBuilder(new ParameterBag(['foo' => '%bar%', 'baz' => '%foo%']));
         $container->merge($config);
         $container->compile();
-        $this->assertEquals(array('bar' => 'foo', 'foo' => 'foo', 'baz' => 'foo'), $container->getParameterBag()->all(), '->merge() evaluates the values of the parameters towards already defined ones');
+        $this->assertEquals(['bar' => 'foo', 'foo' => 'foo', 'baz' => 'foo'], $container->getParameterBag()->all(), '->merge() evaluates the values of the parameters towards already defined ones');
 
         $container = new ContainerBuilder();
         $container->setResourceTracking(false);
@@ -559,7 +559,7 @@ public function testMerge()
         $config->setDefinition('baz', new Definition('BazClass'));
         $config->setAlias('alias_for_foo', 'foo');
         $container->merge($config);
-        $this->assertEquals(array('service_container', 'foo', 'bar', 'baz'), array_keys($container->getDefinitions()), '->merge() merges definitions already defined ones');
+        $this->assertEquals(['service_container', 'foo', 'bar', 'baz'], array_keys($container->getDefinitions()), '->merge() merges definitions already defined ones');
 
         $aliases = $container->getAliases();
         $this->assertArrayHasKey('alias_for_foo', $aliases);
@@ -576,16 +576,16 @@ public function testMerge()
         $bag = new EnvPlaceholderParameterBag();
         $bag->get('env(Foo)');
         $config = new ContainerBuilder($bag);
-        $this->assertSame(array('%env(Bar)%'), $config->resolveEnvPlaceholders(array($bag->get('env(Bar)'))));
+        $this->assertSame(['%env(Bar)%'], $config->resolveEnvPlaceholders([$bag->get('env(Bar)')]));
         $container->merge($config);
-        $this->assertEquals(array('Foo' => 0, 'Bar' => 1), $container->getEnvCounters());
+        $this->assertEquals(['Foo' => 0, 'Bar' => 1], $container->getEnvCounters());
 
         $container = new ContainerBuilder();
         $config = new ContainerBuilder();
         $childDefA = $container->registerForAutoconfiguration('AInterface');
         $childDefB = $config->registerForAutoconfiguration('BInterface');
         $container->merge($config);
-        $this->assertSame(array('AInterface' => $childDefA, 'BInterface' => $childDefB), $container->getAutoconfiguredInstanceof());
+        $this->assertSame(['AInterface' => $childDefA, 'BInterface' => $childDefB], $container->getAutoconfiguredInstanceof());
     }
 
     /**
@@ -620,7 +620,7 @@ public function testResolveEnvValuesWithArray()
     {
         $_ENV['ANOTHER_DUMMY_ENV_VAR'] = 'dummy';
 
-        $dummyArray = array('1' => 'one', '2' => 'two');
+        $dummyArray = ['1' => 'one', '2' => 'two'];
 
         $container = new ContainerBuilder();
         $container->setParameter('dummy', '%env(ANOTHER_DUMMY_ENV_VAR)%');
@@ -673,7 +673,7 @@ public function testCompileWithArrayResolveEnv()
         $container->setParameter('foo', '%env(json:ARRAY)%');
         $container->compile(true);
 
-        $this->assertSame(array('foo' => 'bar'), $container->getParameter('foo'));
+        $this->assertSame(['foo' => 'bar'], $container->getParameter('foo'));
 
         putenv('ARRAY');
     }
@@ -688,7 +688,7 @@ public function testCompileWithArrayAndAnotherResolveEnv()
         $container->setParameter('bar', '%env(DUMMY_ENV_VAR)%');
         $container->compile(true);
 
-        $this->assertSame(array('foo' => 'bar'), $container->getParameter('foo'));
+        $this->assertSame(['foo' => 'bar'], $container->getParameter('foo'));
         $this->assertSame('abc', $container->getParameter('bar'));
 
         putenv('DUMMY_ENV_VAR');
@@ -745,9 +745,9 @@ public function testCastEnv()
 
         $container->register('foo', 'stdClass')
             ->setPublic(true)
-            ->setProperties(array(
+            ->setProperties([
                 'fake' => '%env(int:FAKE)%',
-            ));
+            ]);
 
         $container->compile(true);
 
@@ -761,9 +761,9 @@ public function testEnvAreNullable()
 
         $container->register('foo', 'stdClass')
             ->setPublic(true)
-            ->setProperties(array(
+            ->setProperties([
             'fake' => '%env(int:FAKE)%',
-        ));
+        ]);
 
         $container->compile(true);
 
@@ -775,23 +775,23 @@ public function testEnvInId()
         $container = include __DIR__.'/Fixtures/containers/container_env_in_id.php';
         $container->compile(true);
 
-        $expected = array(
+        $expected = [
             'service_container',
             'foo',
             'bar',
             'bar_%env(BAR)%',
-        );
+        ];
         $this->assertSame($expected, array_keys($container->getDefinitions()));
 
-        $expected = array(
+        $expected = [
             PsrContainerInterface::class => true,
             ContainerInterface::class => true,
             'baz_%env(BAR)%' => true,
             'bar_%env(BAR)%' => true,
-        );
+        ];
         $this->assertSame($expected, $container->getRemovedIds());
 
-        $this->assertSame(array('baz_bar'), array_keys($container->getDefinition('foo')->getArgument(1)));
+        $this->assertSame(['baz_bar'], array_keys($container->getDefinition('foo')->getArgument(1)));
     }
 
     /**
@@ -829,17 +829,17 @@ public function testfindTaggedServiceIds()
         $builder = new ContainerBuilder();
         $builder
             ->register('foo', 'Bar\FooClass')
-            ->addTag('foo', array('foo' => 'foo'))
-            ->addTag('bar', array('bar' => 'bar'))
-            ->addTag('foo', array('foofoo' => 'foofoo'))
+            ->addTag('foo', ['foo' => 'foo'])
+            ->addTag('bar', ['bar' => 'bar'])
+            ->addTag('foo', ['foofoo' => 'foofoo'])
         ;
-        $this->assertEquals($builder->findTaggedServiceIds('foo'), array(
-            'foo' => array(
-                array('foo' => 'foo'),
-                array('foofoo' => 'foofoo'),
-            ),
-        ), '->findTaggedServiceIds() returns an array of service ids and its tag attributes');
-        $this->assertEquals(array(), $builder->findTaggedServiceIds('foobar'), '->findTaggedServiceIds() returns an empty array if there is annotated services');
+        $this->assertEquals($builder->findTaggedServiceIds('foo'), [
+            'foo' => [
+                ['foo' => 'foo'],
+                ['foofoo' => 'foofoo'],
+            ],
+        ], '->findTaggedServiceIds() returns an array of service ids and its tag attributes');
+        $this->assertEquals([], $builder->findTaggedServiceIds('foobar'), '->findTaggedServiceIds() returns an empty array if there is annotated services');
     }
 
     public function testFindUnusedTags()
@@ -847,11 +847,11 @@ public function testFindUnusedTags()
         $builder = new ContainerBuilder();
         $builder
             ->register('foo', 'Bar\FooClass')
-            ->addTag('kernel.event_listener', array('foo' => 'foo'))
-            ->addTag('kenrel.event_listener', array('bar' => 'bar'))
+            ->addTag('kernel.event_listener', ['foo' => 'foo'])
+            ->addTag('kenrel.event_listener', ['bar' => 'bar'])
         ;
         $builder->findTaggedServiceIds('kernel.event_listener');
-        $this->assertEquals(array('kenrel.event_listener'), $builder->findUnusedTags(), '->findUnusedTags() returns an array with unused tags');
+        $this->assertEquals(['kenrel.event_listener'], $builder->findUnusedTags(), '->findUnusedTags() returns an array with unused tags');
     }
 
     public function testFindDefinition()
@@ -981,15 +981,15 @@ public function testResources()
         $container = new ContainerBuilder();
         $container->addResource($a = new FileResource(__DIR__.'/Fixtures/xml/services1.xml'));
         $container->addResource($b = new FileResource(__DIR__.'/Fixtures/xml/services2.xml'));
-        $resources = array();
+        $resources = [];
         foreach ($container->getResources() as $resource) {
             if (false === strpos($resource, '.php')) {
                 $resources[] = $resource;
             }
         }
-        $this->assertEquals(array($a, $b), $resources, '->getResources() returns an array of resources read for the current configuration');
-        $this->assertSame($container, $container->setResources(array()));
-        $this->assertEquals(array(), $container->getResources());
+        $this->assertEquals([$a, $b], $resources, '->getResources() returns an array of resources read for the current configuration');
+        $this->assertSame($container, $container->setResources([]));
+        $this->assertEquals([], $container->getResources());
     }
 
     public function testFileExists()
@@ -1002,14 +1002,14 @@ public function testFileExists()
 
         $this->assertTrue($container->fileExists((string) $a) && $container->fileExists((string) $b) && $container->fileExists($dir));
 
-        $resources = array();
+        $resources = [];
         foreach ($container->getResources() as $resource) {
             if (false === strpos($resource, '.php')) {
                 $resources[] = $resource;
             }
         }
 
-        $this->assertEquals(array($A, $a, $b, $c), $resources, '->getResources() returns an array of resources read for the current configuration');
+        $this->assertEquals([$A, $a, $b, $c], $resources, '->getResources() returns an array of resources read for the current configuration');
     }
 
     public function testExtension()
@@ -1040,28 +1040,28 @@ public function testRegisteredAndLoadedExtension()
     {
         $extension = $this->getMockBuilder('Symfony\\Component\\DependencyInjection\\Extension\\ExtensionInterface')->getMock();
         $extension->expects($this->exactly(2))->method('getAlias')->will($this->returnValue('project'));
-        $extension->expects($this->once())->method('load')->with(array(array('foo' => 'bar')));
+        $extension->expects($this->once())->method('load')->with([['foo' => 'bar']]);
 
         $container = new ContainerBuilder();
         $container->setResourceTracking(false);
         $container->registerExtension($extension);
-        $container->loadFromExtension('project', array('foo' => 'bar'));
+        $container->loadFromExtension('project', ['foo' => 'bar']);
         $container->compile();
     }
 
     public function testPrivateServiceUser()
     {
         $fooDefinition = new Definition('BarClass');
-        $fooUserDefinition = new Definition('BarUserClass', array(new Reference('bar')));
+        $fooUserDefinition = new Definition('BarUserClass', [new Reference('bar')]);
         $container = new ContainerBuilder();
         $container->setResourceTracking(false);
 
         $fooDefinition->setPublic(false);
 
-        $container->addDefinitions(array(
+        $container->addDefinitions([
             'bar' => $fooDefinition,
             'bar_user' => $fooUserDefinition->setPublic(true),
-        ));
+        ]);
 
         $container->compile();
         $this->assertInstanceOf('BarClass', $container->get('bar_user')->bar);
@@ -1116,15 +1116,15 @@ public function testExtensionConfig()
         $configs = $container->getExtensionConfig('foo');
         $this->assertEmpty($configs);
 
-        $first = array('foo' => 'bar');
+        $first = ['foo' => 'bar'];
         $container->prependExtensionConfig('foo', $first);
         $configs = $container->getExtensionConfig('foo');
-        $this->assertEquals(array($first), $configs);
+        $this->assertEquals([$first], $configs);
 
-        $second = array('ding' => 'dong');
+        $second = ['ding' => 'dong'];
         $container->prependExtensionConfig('foo', $second);
         $configs = $container->getExtensionConfig('foo');
-        $this->assertEquals(array($second, $first), $configs);
+        $this->assertEquals([$second, $first], $configs);
     }
 
     public function testAbstractAlias()
@@ -1184,7 +1184,7 @@ public function testInlinedDefinitions()
 
         $container->register('bar', 'BarClass')
             ->setProperty('foo', $definition)
-            ->addMethodCall('setBaz', array($definition));
+            ->addMethodCall('setB
10000
az', [$definition]);
 
         $barUser = $container->get('bar_user');
         $bar = $container->get('bar');
@@ -1202,11 +1202,11 @@ public function testThrowsCircularExceptionForCircularAliases()
     {
         $builder = new ContainerBuilder();
 
-        $builder->setAliases(array(
+        $builder->setAliases([
             'foo' => new Alias('app.test_class'),
             'app.test_class' => new Alias('App\\TestClass'),
             'App\\TestClass' => new Alias('app.test_class'),
-        ));
+        ]);
 
         $builder->findDefinition('foo');
     }
@@ -1317,12 +1317,12 @@ public function testServiceLocator()
         $container = new ContainerBuilder();
         $container->register('foo_service', ServiceLocator::class)
             ->setPublic(true)
-            ->addArgument(array(
+            ->addArgument([
                 'bar' => new ServiceClosureArgument(new Reference('bar_service')),
                 'baz' => new ServiceClosureArgument(new TypedReference('baz_service', 'stdClass')),
-            ))
+            ])
         ;
-        $container->register('bar_service', 'stdClass')->setArguments(array(new Reference('baz_service')))->setPublic(true);
+        $container->register('bar_service', 'stdClass')->setArguments([new Reference('baz_service')])->setPublic(true);
         $container->register('baz_service', 'stdClass')->setPublic(false);
         $container->compile();
 
@@ -1343,7 +1343,7 @@ public function testUninitializedReference()
         $this->assertNull($bar->closures[0]());
         $this->assertNull($bar->closures[1]());
         $this->assertNull($bar->closures[2]());
-        $this->assertSame(array(), iterator_to_array($bar->iter));
+        $this->assertSame([], iterator_to_array($bar->iter));
 
         $container = include __DIR__.'/Fixtures/containers/container_uninitialized_ref.php';
         $container->compile();
@@ -1359,7 +1359,7 @@ public function testUninitializedReference()
         $this->assertEquals(new \stdClass(), $bar->closures[0]());
         $this->assertNull($bar->closures[1]());
         $this->assertEquals(new \stdClass(), $bar->closures[2]());
-        $this->assertEquals(array('foo1' => new \stdClass(), 'foo3' => new \stdClass()), iterator_to_array($bar->iter));
+        $this->assertEquals(['foo1' => new \stdClass(), 'foo3' => new \stdClass()], iterator_to_array($bar->iter));
     }
 
     /**
@@ -1375,7 +1375,7 @@ public function testAlmostCircular($visibility)
         $foo2 = $container->get('foo2');
         $this->assertSame($foo2, $foo2->bar->foobar->foo);
 
-        $this->assertSame(array(), (array) $container->get('foobar4'));
+        $this->assertSame([], (array) $container->get('foobar4'));
 
         $foo5 = $container->get('foo5');
         $this->assertSame($foo5, $foo5->bar->foo);
@@ -1387,15 +1387,15 @@ public function testAlmostCircular($visibility)
         $this->assertEquals(new \stdClass(), $manager);
 
         $foo6 = $container->get('foo6');
-        $this->assertEquals((object) array('bar6' => (object) array()), $foo6);
+        $this->assertEquals((object) ['bar6' => (object) []], $foo6);
 
         $this->assertInstanceOf(\stdClass::class, $container->get('root'));
     }
 
     public function provideAlmostCircular()
     {
-        yield array('public');
-        yield array('private');
+        yield ['public'];
+        yield ['private'];
     }
 
     public function testRegisterForAutoconfiguration()
@@ -1403,7 +1403,7 @@ public function testRegisterForAutoconfiguration()
         $container = new ContainerBuilder();
         $childDefA = $container->registerForAutoconfiguration('AInterface');
         $childDefB = $container->registerForAutoconfiguration('BInterface');
-        $this->assertSame(array('AInterface' => $childDefA, 'BInterface' => $childDefB), $container->getAutoconfiguredInstanceof());
+        $this->assertSame(['AInterface' => $childDefA, 'BInterface' => $childDefB], $container->getAutoconfiguredInstanceof());
 
         // when called multiple times, the same instance is returned
         $this->assertSame($childDefA, $container->registerForAutoconfiguration('AInterface'));
@@ -1436,7 +1436,7 @@ public function testPrivateServiceTriggersDeprecation()
      */
     public function testParameterWithMixedCase()
     {
-        $container = new ContainerBuilder(new ParameterBag(array('foo' => 'bar')));
+        $container = new ContainerBuilder(new ParameterBag(['foo' => 'bar']));
         $container->register('foo', 'stdClass')
             ->setPublic(true)
             ->setProperty('foo', '%FOO%');
@@ -1449,20 +1449,20 @@ public function testParameterWithMixedCase()
     public function testArgumentsHaveHigherPriorityThanBindings()
     {
         $container = new ContainerBuilder();
-        $container->register('class.via.bindings', CaseSensitiveClass::class)->setArguments(array(
+        $container->register('class.via.bindings', CaseSensitiveClass::class)->setArguments([
             'via-bindings',
-        ));
-        $container->register('class.via.argument', CaseSensitiveClass::class)->setArguments(array(
+        ]);
+        $container->register('class.via.argument', CaseSensitiveClass::class)->setArguments([
             'via-argument',
-        ));
-        $container->register('foo', SimilarArgumentsDummy::class)->setPublic(true)->setBindings(array(
+        ]);
+        $container->register('foo', SimilarArgumentsDummy::class)->setPublic(true)->setBindings([
             CaseSensitiveClass::class => new Reference('class.via.bindings'),
             '$token' => '1234',
-        ))->setArguments(array(
+        ])->setArguments([
             '$class1' => new Reference('class.via.argument'),
-        ));
+        ]);
 
-        $this->assertSame(array('service_container', 'class.via.bindings', 'class.via.argument', 'foo', 'Psr\Container\ContainerInterface', 'Symfony\Component\DependencyInjection\ContainerInterface'), $container->getServiceIds());
+        $this->assertSame(['service_container', 'class.via.bindings', 'class.via.argument', 'foo', 'Psr\Container\ContainerInterface', 'Symfony\Component\DependencyInjection\ContainerInterface'], $container->getServiceIds());
 
         $container->compile();
 
@@ -1479,10 +1479,10 @@ public function testUninitializedSyntheticReference()
 
         $container->compile();
 
-        $this->assertEquals((object) array('foo' => null), $container->get('bar'));
+        $this->assertEquals((object) ['foo' => null], $container->get('bar'));
 
-        $container->set('foo', (object) array(123));
-        $this->assertEquals((object) array('foo' => (object) array(123)), $container->get('bar'));
+        $container->set('foo', (object) [123]);
+        $this->assertEquals((object) ['foo' => (object) [123]], $container->get('bar'));
     }
 
     public function testDecoratedSelfReferenceInvolvingPrivateServices()
@@ -1498,7 +1498,7 @@ public function testDecoratedSelfReferenceInvolvingPrivateServices()
 
         $container->compile();
 
-        $this->assertSame(array('service_container'), array_keys($container->getDefinitions()));
+        $this->assertSame(['service_container'], array_keys($container->getDefinitions()));
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
index a57f787972f2..d2616a34ba6b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
@@ -25,8 +25,8 @@ public function testConstructor()
         $sc = new Container();
         $this->assertSame($sc, $sc->get('service_container'), '__construct() automatically registers itself as a service');
 
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
-        $this->assertEquals(array('foo' => 'bar'), $sc->getParameterBag()->all(), '__construct() takes an array of parameters as its first argument');
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
+        $this->assertEquals(['foo' => 'bar'], $sc->getParameterBag()->all(), '__construct() takes an array of parameters as its first argument');
     }
 
     /**
@@ -39,18 +39,18 @@ public function testCamelize($id, $expected)
 
     public function dataForTestCamelize()
     {
-        return array(
-            array('foo_bar', 'FooBar'),
-            array('foo.bar', 'Foo_Bar'),
-            array('foo.bar_baz', 'Foo_BarBaz'),
-            array('foo._bar', 'Foo_Bar'),
-            array('foo_.bar', 'Foo_Bar'),
-            array('_foo', 'Foo'),
-            array('.foo', '_Foo'),
-            array('foo_', 'Foo'),
-            array('foo.', 'Foo_'),
-            array('foo\bar', 'Foo_Bar'),
-        );
+        return [
+            ['foo_bar', 'FooBar'],
+            ['foo.bar', 'Foo_Bar'],
+            ['foo.bar_baz', 'Foo_BarBaz'],
+            ['foo._bar', 'Foo_Bar'],
+            ['foo_.bar', 'Foo_Bar'],
+            ['_foo', 'Foo'],
+            ['.foo', '_Foo'],
+            ['foo_', 'Foo'],
+            ['foo.', 'Foo_'],
+            ['foo\bar', 'Foo_Bar'],
+        ];
     }
 
     /**
@@ -63,24 +63,24 @@ public function testUnderscore($id, $expected)
 
     public function dataForTestUnderscore()
     {
-        return array(
-            array('FooBar', 'foo_bar'),
-            array('Foo_Bar', 'foo.bar'),
-            array('Foo_BarBaz', 'foo.bar_baz'),
-            array('FooBar_BazQux', 'foo_bar.baz_qux'),
-            array('_Foo', '.foo'),
-            array('Foo_', 'foo.'),
-        );
+        return [
+            ['FooBar', 'foo_bar'],
+            ['Foo_Bar', 'foo.bar'],
+            ['Foo_BarBaz', 'foo.bar_baz'],
+            ['FooBar_BazQux', 'foo_bar.baz_qux'],
+            ['_Foo', '.foo'],
+            ['Foo_', 'foo.'],
+        ];
     }
 
     public function testCompile()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
         $this->assertFalse($sc->getParameterBag()->isResolved(), '->compile() resolves the parameter bag');
         $sc->compile();
         $this->assertTrue($sc->getParameterBag()->isResolved(), '->compile() resolves the parameter bag');
         $this->assertInstanceOf('Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag', $sc->getParameterBag(), '->compile() changes the parameter bag to a FrozenParameterBag instance');
-        $this->assertEquals(array('foo' => 'bar'), $sc->getParameterBag()->all(), '->compile() copies the current parameters to the new parameter bag');
+        $this->assertEquals(['foo' => 'bar'], $sc->getParameterBag()->all(), '->compile() copies the current parameters to the new parameter bag');
     }
 
     /**
@@ -90,7 +90,7 @@ public function testCompile()
      */
     public function testIsFrozen()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
         $this->assertFalse($sc->isFrozen(), '->isFrozen() returns false if the parameters are not frozen');
         $sc->compile();
         $this->assertTrue($sc->isFrozen(), '->isFrozen() returns true if the parameters are frozen');
@@ -98,7 +98,7 @@ public function testIsFrozen()
 
     public function testIsCompiled()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
         $this->assertFalse($sc->isCompiled(), '->isCompiled() returns false if the container is not compiled');
         $sc->compile();
         $this->assertTrue($sc->isCompiled(), '->isCompiled() returns true if the container is compiled');
@@ -106,19 +106,19 @@ public function testIsCompiled()
 
     public function testIsCompiledWithFrozenParameters()
     {
-        $sc = new Container(new FrozenParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new FrozenParameterBag(['foo' => 'bar']));
         $this->assertFalse($sc->isCompiled(), '->isCompiled() returns false if the container is not compiled but the parameter bag is already frozen');
     }
 
     public function testGetParameterBag()
     {
         $sc = new Container();
-        $this->assertEquals(array(), $sc->getParameterBag()->all(), '->getParameterBag() returns an empty array if no parameter has been defined');
+        $this->assertEquals([], $sc->getParameterBag()->all(), '->getParameterBag() returns an empty array if no parameter has been defined');
     }
 
     public function testGetSetParameter()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
         $sc->setParameter('bar', 'foo');
         $this->assertEquals('foo', $sc->getParameter('bar'), '->setParameter() sets the value of a new parameter');
 
@@ -141,7 +141,7 @@ public function testGetSetParameter()
      */
     public function testGetSetParameterWithMixedCase()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
 
         $sc->setParameter('Foo', 'baz1');
         $this->assertEquals('baz1', $sc->getParameter('foo'), '->setParameter() converts the key to lowercase');
@@ -153,11 +153,11 @@ public function testGetServiceIds()
         $sc = new Container();
         $sc->set('foo', $obj = new \stdClass());
         $sc->set('bar', $obj = new \stdClass());
-        $this->assertEquals(array('service_container', 'foo', 'bar'), $sc->getServiceIds(), '->getServiceIds() returns all defined service ids');
+        $this->assertEquals(['service_container', 'foo', 'bar'], $sc->getServiceIds(), '->getServiceIds() returns all defined service ids');
 
         $sc = new ProjectServiceContainer();
         $sc->set('foo', $obj = new \stdClass());
-        $this->assertEquals(array('service_container', 'internal', 'bar', 'foo_bar', 'foo.baz', 'circular', 'throw_exception', 'throws_exception_on_service_configuration', 'internal_dependency', 'foo'), $sc->getServiceIds(), '->getServiceIds() returns defined service ids by factory methods in the method map, followed by service ids defined by set()');
+        $this->assertEquals(['service_container', 'internal', 'bar', 'foo_bar', 'foo.baz', 'circular', 'throw_exception', 'throws_exception_on_service_configuration', 'internal_dependency', 'foo'], $sc->getServiceIds(), '->getServiceIds() returns defined service ids by factory methods in the method map, followed by service ids defined by set()');
     }
 
     /**
@@ -169,7 +169,7 @@ public function testGetLegacyServiceIds()
         $sc = new LegacyProjectServiceContainer();
         $sc->set('foo', $obj = new \stdClass());
 
-        $this->assertEquals(array('internal', 'bar', 'foo_bar', 'foo.baz', 'circular', 'throw_exception', 'throws_exception_on_service_configuration', 'service_container', 'foo'), $sc->getServiceIds(), '->getServiceIds() returns defined service ids by getXXXService() methods, followed by service ids defined by set()');
+        $this->assertEquals(['internal', 'bar', 'foo_bar', 'foo.baz', 'circular', 'throw_exception', 'throws_exception_on_service_configuration', 'service_container', 'foo'], $sc->getServiceIds(), '->getServiceIds() returns defined service ids by getXXXService() methods, followed by service ids defined by set()');
     }
 
     public function testSet()
@@ -557,7 +557,7 @@ class ProjectServiceContainer extends Container
     public $__foo_baz;
     public $__internal;
     protected $privates;
-    protected $methodMap = array(
+    protected $methodMap = [
         'internal' => 'getInternalService',
         'bar' => 'getBarService',
         'foo_bar' => 'getFooBarService',
@@ -566,7 +566,7 @@ class ProjectServiceContainer extends Container
         'throw_exception' => 'getThrowExceptionService',
         'throws_exception_on_service_configuration' => 'getThrowsExceptionOnServiceConfigurationService',
         'internal_dependency' => 'getInternalDependencyService',
-    );
+    ];
 
     public function __construct()
     {
@@ -576,11 +576,11 @@ public function __construct()
         $this->__foo_bar = new \stdClass();
         $this->__foo_baz = new \stdClass();
         $this->__internal = new \stdClass();
-        $this->privates = array(
+        $this->privates = [
             'internal' => true,
             'synthetic' => true,
-        );
-        $this->aliases = array('alias' => 'bar');
+        ];
+        $this->aliases = ['alias' => 'bar'];
         $this->syntheticIds['synthetic'] = true;
     }
 
@@ -646,8 +646,8 @@ public function __construct()
         $this->__foo_bar = new \stdClass();
         $this->__foo_baz = new \stdClass();
         $this->__internal = new \stdClass();
-        $this->privates = array('internal' => true);
-        $this->aliases = array('alias' => 'bar');
+        $this->privates = ['internal' => true];
+        $this->aliases = ['alias' => 'bar'];
     }
 
     protected function getInternalService()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/CrossCheckTest.php b/src/Symfony/Component/DependencyInjection/Tests/CrossCheckTest.php
index 6ec9d33f5892..fe132af48473 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/CrossCheckTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/CrossCheckTest.php
@@ -58,16 +58,16 @@ public function testCrossCheck($fixture, $type)
 
         $r = new \ReflectionProperty(ContainerBuilder::class, 'normalizedIds');
         $r->setAccessible(true);
-        $r->setValue($container2, array());
-        $r->setValue($container1, array());
+        $r->setValue($container2, []);
+        $r->setValue($container1, []);
 
         $this->assertEquals(serialize($container2), serialize($container1), 'loading a dump from a previously loaded container returns the same container');
 
-        $services1 = array();
+        $services1 = [];
         foreach ($container1 as $id => $service) {
             $services1[$id] = serialize($service);
         }
-        $services2 = array();
+        $services2 = [];
         foreach ($container2 as $id => $service) {
             $services2[$id] = serialize($service);
         }
@@ -79,17 +79,17 @@ public function testCrossCheck($fixture, $type)
 
     public function crossCheckLoadersDumpers()
     {
-        return array(
-            array('services1.xml', 'xml'),
-            array('services2.xml', 'xml'),
-            array('services6.xml', 'xml'),
-            array('services8.xml', 'xml'),
-            array('services9.xml', 'xml'),
-            array('services1.yml', 'yaml'),
-            array('services2.yml', 'yaml'),
-            array('services6.yml', 'yaml'),
-            array('services8.yml', 'yaml'),
-            array('services9.yml', 'yaml'),
-        );
+        return [
+            ['services1.xml', 'xml'],
+            ['services2.xml', 'xml'],
+            ['services6.xml', 'xml'],
+            ['services8.xml', 'xml'],
+            ['services9.xml', 'xml'],
+            ['services1.yml', 'yaml'],
+            ['services2.yml', 'yaml'],
+            ['services6.yml', 'yaml'],
+            ['services8.yml', 'yaml'],
+            ['services9.yml', 'yaml'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/DefinitionDecoratorTest.php b/src/Symfony/Component/DependencyInjection/Tests/DefinitionDecoratorTest.php
index 92a212ec416a..ac58d3455183 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/DefinitionDecoratorTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/DefinitionDecoratorTest.php
@@ -24,7 +24,7 @@ public function testConstructor()
         $def = new DefinitionDecorator('foo');
 
         $this->assertEquals('foo', $def->getParent());
-        $this->assertEquals(array(), $def->getChanges());
+        $this->assertEquals([], $def->getChanges());
     }
 
     /**
@@ -40,17 +40,17 @@ public function testSetProperty($property, $changeKey)
         $this->assertNull($def->$getter());
         $this->assertSame($def, $def->$setter('foo'));
         $this->assertEquals('foo', $def->$getter());
-        $this->assertEquals(array($changeKey => true), $def->getChanges());
+        $this->assertEquals([$changeKey => true], $def->getChanges());
     }
 
     public function getPropertyTests()
     {
-        return array(
-            array('class', 'class'),
-            array('factory', 'factory'),
-            array('configurator', 'configurator'),
-            array('file', 'file'),
-        );
+        return [
+            ['class', 'class'],
+            ['factory', 'factory'],
+            ['configurator', 'configurator'],
+            ['file', 'file'],
+        ];
     }
 
     public function testSetPublic()
@@ -60,7 +60,7 @@ public function testSetPublic()
         $this->assertTrue($def->isPublic());
         $this->assertSame($def, $def->setPublic(false));
         $this->assertFalse($def->isPublic());
-        $this->assertEquals(array('public' => true), $def->getChanges());
+        $this->assertEquals(['public' => true], $def->getChanges());
     }
 
     public function testSetLazy()
@@ -70,7 +70,7 @@ public function testSetLazy()
         $this->assertFalse($def->isLazy());
         $this->assertSame($def, $def->setLazy(false));
         $this->assertFalse($def->isLazy());
-        $this->assertEquals(array('lazy' => true), $def->getChanges());
+        $this->assertEquals(['lazy' => true], $def->getChanges());
     }
 
     public function testSetAutowired()
@@ -80,16 +80,16 @@ public function testSetAutowired()
         $this->assertFalse($def->isAutowired());
         $this->assertSame($def, $def->setAutowired(true));
         $this->assertTrue($def->isAutowired());
-        $this->assertSame(array('autowired' => true), $def->getChanges());
+        $this->assertSame(['autowired' => true], $def->getChanges());
     }
 
     public function testSetArgument()
     {
         $def = new DefinitionDecorator('foo');
 
-        $this->assertEquals(array(), $def->getArguments());
+        $this->assertEquals([], $def->getArguments());
         $this->assertSame($def, $def->replaceArgument(0, 'foo'));
-        $this->assertEquals(array('index_0' => 'foo'), $def->getArguments());
+        $this->assertEquals(['index_0' => 'foo'], $def->getArguments());
     }
 
     /**
@@ -106,7 +106,7 @@ public function testReplaceArgument()
     {
         $def = new DefinitionDecorator('foo');
 
-        $def->setArguments(array(0 => 'foo', 1 => 'bar'));
+        $def->setArguments([0 => 'foo', 1 => 'bar']);
         $this->assertEquals('foo', $def->getArgument(0));
         $this->assertEquals('bar', $def->getArgument(1));
 
@@ -114,7 +114,7 @@ public function testReplaceArgument()
         $this->assertEquals('foo', $def->getArgument(0));
         $this->assertEquals('baz', $def->getArgument(1));
 
-        $this->assertEquals(array(0 => 'foo', 1 => 'bar', 'index_1' => 'baz'), $def->getArguments());
+        $this->assertEquals([0 => 'foo', 1 => 'bar', 'index_1' => 'baz'], $def->getArguments());
     }
 
     /**
@@ -124,7 +124,7 @@ public function testGetArgumentShouldCheckBounds()
     {
         $def = new DefinitionDecorator('foo');
 
-        $def->setArguments(array(0 => 'foo'));
+        $def->setArguments([0 => 'foo']);
         $def->replaceArgument(0, 'foo');
 
         $def->getArgument(1);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php b/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php
index 5fe4236ad938..3581fe855037 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php
@@ -20,10 +20,10 @@ public function testConstructor()
     {
         $def = new Definition('stdClass');
         $this->assertEquals('stdClass', $def->getClass(), '__construct() takes the class name as its first argument');
-        $this->assertSame(array('class' => true), $def->getChanges());
+        $this->assertSame(['class' => true], $def->getChanges());
 
-        $def = new Definition('stdClass', array('foo'));
-        $this->assertEquals(array('foo'), $def->getArguments(), '__construct() takes an optional array of arguments as its second argument');
+        $def = new Definition('stdClass', ['foo']);
+        $this->assertEquals(['foo'], $def->getArguments(), '__construct() takes an optional array of arguments as its second argument');
     }
 
     public function testSetGetFactory()
@@ -34,8 +34,8 @@ public function testSetGetFactory()
         $this->assertEquals('foo', $def->getFactory(), '->getFactory() returns the factory');
 
         $def->setFactory('Foo::bar');
-        $this->assertEquals(array('Foo', 'bar'), $def->getFactory(), '->setFactory() converts string static method call to the array');
-        $this->assertSame(array('factory' => true), $def->getChanges());
+        $this->assertEquals(['Foo', 'bar'], $def->getFactory(), '->setFactory() converts string static method call to the array');
+        $this->assertSame(['factory' => true], $def->getChanges());
     }
 
     public function testSetGetClass()
@@ -50,20 +50,20 @@ public function testSetGetDecoratedService()
         $def = new Definition('stdClass');
         $this->assertNull($def->getDecoratedService());
         $def->setDecoratedService('foo', 'foo.renamed', 5);
-        $this->assertEquals(array('foo', 'foo.renamed', 5), $def->getDecoratedService());
+        $this->assertEquals(['foo', 'foo.renamed', 5], $def->getDecoratedService());
         $def->setDecoratedService(null);
         $this->assertNull($def->getDecoratedService());
 
         $def = new Definition('stdClass');
         $this->assertNull($def->getDecoratedService());
         $def->setDecoratedService('foo', 'foo.renamed');
-        $this->assertEquals(array('foo', 'foo.renamed', 0), $def->getDecoratedService());
+        $this->assertEquals(['foo', 'foo.renamed', 0], $def->getDecoratedService());
         $def->setDecoratedService(null);
         $this->assertNull($def->getDecoratedService());
 
         $def = new Definition('stdClass');
         $def->setDecoratedService('foo');
-        $this->assertEquals(array('foo', null, 0), $def->getDecoratedService());
+        $this->assertEquals(['foo', null, 0], $def->getDecoratedService());
         $def->setDecoratedService(null);
         $this->assertNull($def->getDecoratedService());
 
@@ -82,23 +82,23 @@ public function testSetGetDecoratedService()
     public function testArguments()
     {
         $def = new Definition('stdClass');
-        $this->assertSame($def, $def->setArguments(array('foo')), '->setArguments() implements a fluent interface');
-        $this->assertEquals(array('foo'), $def->getArguments(), '->getArguments() returns the arguments');
+        $this->assertSame($def, $def->setArguments(['foo']), '->setArguments() implements a fluent interface');
+        $this->assertEquals(['foo'], $def->getArguments(), '->getArguments() returns the arguments');
         $this->assertSame($def, $def->addArgument('bar'), '->addArgument() implements a fluent interface');
-        $this->assertEquals(array('foo', 'bar'), $def->getArguments(), '->addArgument() adds an argument');
+        $this->assertEquals(['foo', 'bar'], $def->getArguments(), '->addArgument() adds an argument');
     }
 
     public function testMethodCalls()
     {
         $def = new Definition('stdClass');
-        $this->assertSame($def, $def->setMethodCalls(array(array('foo', array('foo')))), '->setMethodCalls() implements a fluent interface');
-        $this->assertEquals(array(array('foo', array('foo'))), $def->getMethodCalls(), '->getMethodCalls() returns the methods to call');
-        $this->assertSame($def, $def->addMethodCall('bar', array('bar')), '->addMethodCall() implements a fluent interface');
-        $this->assertEquals(array(array('foo', array('foo')), array('bar', array('bar'))), $def->getMethodCalls(), '->addMethodCall() adds a method to call');
+        $this->assertSame($def, $def->setMethodCalls([['foo', ['foo']]]), '->setMethodCalls() implements a fluent interface');
+        $this->assertEquals([['foo', ['foo']]], $def->getMethodCalls(), '->getMethodCalls() returns the methods to call');
+        $this->assertSame($def, $def->addMethodCall('bar', ['bar']), '->addMethodCall() implements a fluent interface');
+        $this->assertEquals([['foo', ['foo']], ['bar', ['bar']]], $def->getMethodCalls(), '->addMethodCall() adds a method to call');
         $this->assertTrue($def->hasMethodCall('bar'), '->hasMethodCall() returns true if first argument is a method to call registered');
         $this->assertFalse($def->hasMethodCall('no_registered'), '->hasMethodCall() returns false if first argument is not a method to call registered');
         $this->assertSame($def, $def->removeMethodCall('bar'), '->removeMethodCall() implements a fluent interface');
-        $this->assertEquals(array(array('foo', array('foo'))), $def->getMethodCalls(), '->removeMethodCall() removes a method to call');
+        $this->assertEquals([['foo', ['foo']]], $def->getMethodCalls(), '->removeMethodCall() removes a method to call');
     }
 
     /**
@@ -179,12 +179,12 @@ public function testSetDeprecatedWithInvalidDeprecationTemplate($message)
 
     public function invalidDeprecationMessageProvider()
     {
-        return array(
-            "With \rs" => array("invalid \r message %service_id%"),
-            "With \ns" => array("invalid \n message %service_id%"),
-            'With */s' => array('invalid */ message %service_id%'),
-            'message not containing require %service_id% variable' => array('this is deprecated'),
-        );
+        return [
+            "With \rs" => ["invalid \r message %service_id%"],
+            "With \ns" => ["invalid \n message %service_id%"],
+            'With */s' => ['invalid */ message %service_id%'],
+            'message not containing require %service_id% variable' => ['this is deprecated'],
+        ];
     }
 
     public function testSetGetConfigurator()
@@ -198,18 +198,18 @@ public function testClearTags()
     {
         $def = new Definition('stdClass');
         $this->assertSame($def, $def->clearTags(), '->clearTags() implements a fluent interface');
-        $def->addTag('foo', array('foo' => 'bar'));
+        $def->addTag('foo', ['foo' => 'bar']);
         $def->clearTags();
-        $this->assertEquals(array(), $def->getTags(), '->clearTags() removes all current tags');
+        $this->assertEquals([], $def->getTags(), '->clearTags() removes all current tags');
     }
 
     public function testClearTag()
     {
         $def = new Definition('stdClass');
         $this->assertSame($def, $def->clearTags(), '->clearTags() implements a fluent interface');
-        $def->addTag('1foo1', array('foo1' => 'bar1'));
-        $def->addTag('2foo2', array('foo2' => 'bar2'));
-        $def->addTag('3foo3', array('foo3' => 'bar3'));
+        $def->addTag('1foo1', ['foo1' => 'bar1']);
+        $def->addTag('2foo2', ['foo2' => 'bar2']);
+        $def->addTag('3foo3', ['foo3' => 'bar3']);
         $def->clearTag('2foo2');
         $this->assertTrue($def->hasTag('1foo1'));
         $this->assertFalse($def->hasTag('2foo2'));
@@ -222,18 +222,18 @@ public function testClearTag()
     public function testTags()
     {
         $def = new Definition('stdClass');
-        $this->assertEquals(array(), $def->getTag('foo'), '->getTag() returns an empty array if the tag is not defined');
+        $this->assertEquals([], $def->getTag('foo'), '->getTag() returns an empty array if the tag is not defined');
         $this->assertFalse($def->hasTag('foo'));
         $this->assertSame($def, $def->addTag('foo'), '->addTag() implements a fluent interface');
         $this->assertTrue($def->hasTag('foo'));
-        $this->assertEquals(array(array()), $def->getTag('foo'), '->getTag() returns attributes for a tag name');
-        $def->addTag('foo', array('foo' => 'bar'));
-        $this->assertEquals(array(array(), array('foo' => 'bar')), $def->getTag('foo'), '->addTag() can adds the same tag several times');
-        $def->addTag('bar', array('bar' => 'bar'));
-        $this->assertEquals($def->getTags(), array(
-            'foo' => array(array(), array('foo' => 'bar')),
-            'bar' => array(array('bar' => 'bar')),
-        ), '->getTags() returns all tags');
+        $this->assertEquals([[]], $def->getTag('foo'), '->getTag() returns attributes for a tag name');
+        $def->addTag('foo', ['foo' => 'bar']);
+        $this->assertEquals([[], ['foo' => 'bar']], $def->getTag('foo'), '->addTag() can adds the same tag several times');
+        $def->addTag('bar', ['bar' => 'bar']);
+        $this->assertEquals($def->getTags(), [
+            'foo' => [[], ['foo' => 'bar']],
+            'bar' => [['bar' => 'bar']],
+        ], '->getTags() returns all tags');
     }
 
     public function testSetArgument()
@@ -241,17 +241,17 @@ public function testSetArgument()
         $def = new Definition('stdClass');
 
         $def->addArgument('foo');
-        $this->assertSame(array('foo'), $def->getArguments());
+        $this->assertSame(['foo'], $def->getArguments());
 
         $this->assertSame($def, $def->replaceArgument(0, 'moo'));
-        $this->assertSame(array('moo'), $def->getArguments());
+        $this->assertSame(['moo'], $def->getArguments());
 
         $def->addArgument('moo');
         $def
             ->replaceArgument(0, 'foo')
             ->replaceArgument(1, 'bar')
         ;
-        $this->assertSame(array('foo', 'bar'), $def->getArguments());
+        $this->assertSame(['foo', 'bar'], $def->getArguments());
     }
 
     /**
@@ -291,18 +291,18 @@ public function testSetGetProperties()
     {
         $def = new Definition('stdClass');
 
-        $this->assertEquals(array(), $def->getProperties());
-        $this->assertSame($def, $def->setProperties(array('foo' => 'bar')));
-        $this->assertEquals(array('foo' => 'bar'), $def->getProperties());
+        $this->assertEquals([], $def->getProperties());
+        $this->assertSame($def, $def->setProperties(['foo' => 'bar']));
+        $this->assertEquals(['foo' => 'bar'], $def->getProperties());
     }
 
     public function testSetProperty()
     {
         $def = new Definition('stdClass');
 
-        $this->assertEquals(array(), $def->getProperties());
+        $this->assertEquals([], $def->getProperties());
         $this->assertSame($def, $def->setProperty('foo', 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $def->getProperties());
+        $this->assertEquals(['foo' => 'bar'], $def->getProperties());
     }
 
     public function testAutowired()
@@ -321,12 +321,12 @@ public function testChangesNoChanges()
     {
         $def = new Definition();
 
-        $this->assertSame(array(), $def->getChanges());
+        $this->assertSame([], $def->getChanges());
     }
 
     public function testGetChangesWithChanges()
     {
-        $def = new Definition('stdClass', array('fooarg'));
+        $def = new Definition('stdClass', ['fooarg']);
 
         $def->setAbstract(true);
         $def->setAutowired(true);
@@ -340,13 +340,13 @@ public function testGetChangesWithChanges()
         $def->setShared(true);
         $def->setSynthetic(true);
         // changes aren't tracked for these, class or arguments
-        $def->setInstanceofConditionals(array());
+        $def->setInstanceofConditionals([]);
         $def->addTag('foo_tag');
         $def->addMethodCall('methodCall');
         $def->setProperty('fooprop', true);
         $def->setAutoconfigured(true);
 
-        $this->assertSame(array(
+        $this->assertSame([
             'class' => true,
             'autowired' => true,
             'configurator' => true,
@@ -358,10 +358,10 @@ public function testGetChangesWithChanges()
             'public' => true,
             'shared' => true,
             'autoconfigured' => true,
-        ), $def->getChanges());
+        ], $def->getChanges());
 
-        $def->setChanges(array());
-        $this->assertSame(array(), $def->getChanges());
+        $def->setChanges([]);
+        $this->assertSame([], $def->getChanges());
     }
 
     /**
@@ -371,13 +371,13 @@ public function testTypes()
     {
         $def = new Definition('stdClass');
 
-        $this->assertEquals(array(), $def->getAutowiringTypes());
-        $this->assertSame($def, $def->setAutowiringTypes(array('Foo')));
-        $this->assertEquals(array('Foo'), $def->getAutowiringTypes());
+        $this->assertEquals([], $def->getAutowiringTypes());
+        $this->assertSame($def, $def->setAutowiringTypes(['Foo']));
+        $this->assertEquals(['Foo'], $def->getAutowiringTypes());
         $this->assertSame($def, $def->addAutowiringType('Bar'));
         $this->assertTrue($def->hasAutowiringType('Bar'));
         $this->assertSame($def, $def->removeAutowiringType('Foo'));
-        $this->assertEquals(array('Bar'), $def->getAutowiringTypes());
+        $this->assertEquals(['Bar'], $def->getAutowiringTypes());
     }
 
     public function testShouldAutoconfigure()
@@ -394,6 +394,6 @@ public function testAddError()
         $this->assertEmpty($def->getErrors());
         $def->addError('First error');
         $def->addError('Second error');
-        $this->assertSame(array('First error', 'Second error'), $def->getErrors());
+        $this->assertSame(['First error', 'Second error'], $def->getErrors());
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/GraphvizDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/GraphvizDumperTest.php
index 3c40bb5504e8..ea11c7c533a3 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/GraphvizDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/GraphvizDumperTest.php
@@ -42,14 +42,14 @@ public function testDump()
 
         $container = include self::$fixturesPath.'/containers/container10.php';
         $dumper = new GraphvizDumper($container);
-        $this->assertEquals($dumper->dump(array(
-            'graph' => array('ratio' => 'normal'),
-            'node' => array('fontsize' => 13, 'fontname' => 'Verdana', 'shape' => 'square'),
-            'edge' => array('fontsize' => 12, 'fontname' => 'Verdana', 'color' => 'white', 'arrowhead' => 'closed', 'arrowsize' => 1),
-            'node.instance' => array('fillcolor' => 'green', 'style' => 'empty'),
-            'node.definition' => array('fillcolor' => 'grey'),
-            'node.missing' => array('fillcolor' => 'red', 'style' => 'empty'),
-        )), file_get_contents(self::$fixturesPath.'/graphviz/services10-1.dot'), '->dump() dumps services');
+        $this->assertEquals($dumper->dump([
+            'graph' => ['ratio' => 'normal'],
+            'node' => ['fontsize' => 13, 'fontname' => 'Verdana', 'shape' => 'square'],
+            'edge' => ['fontsize' => 12, 'fontname' => 'Verdana', 'color' => 'white', 'arrowhead' => 'closed', 'arrowsize' => 1],
+            'node.instance' => ['fillcolor' => 'green', 'style' => 'empty'],
+            'node.definition' => ['fillcolor' => 'grey'],
+            'node.missing' => ['fillcolor' => 'red', 'style' => 'empty'],
+        ]), file_get_contents(self::$fixturesPath.'/graphviz/services10-1.dot'), '->dump() dumps services');
     }
 
     public function testDumpWithFrozenContainer()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
index 60fa55c3b545..6d985eaca360 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -54,14 +54,14 @@ public function testDump()
         $dumper = new PhpDumper($container);
 
         $this->assertStringEqualsFile(self::$fixturesPath.'/php/services1.php', $dumper->dump(), '->dump() dumps an empty container as an empty PHP class');
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services1-1.php', $dumper->dump(array('class' => 'Container', 'base_class' => 'AbstractContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Dump')), '->dump() takes a class and a base_class options');
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services1-1.php', $dumper->dump(['class' => 'Container', 'base_class' => 'AbstractContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Dump']), '->dump() takes a class and a base_class options');
     }
 
     public function testDumpOptimizationString()
     {
         $definition = new Definition();
         $definition->setClass('stdClass');
-        $definition->addArgument(array(
+        $definition->addArgument([
             'only dot' => '.',
             'concatenation as value' => '.\'\'.',
             'concatenation from the start value' => '\'\'.',
@@ -73,7 +73,7 @@ public function testDumpOptimizationString()
             'optimize concatenation from the start' => '%empty_value%start',
             'optimize concatenation at the end' => 'end%empty_value%',
             'new line' => "string with \nnew line",
-        ));
+        ]);
         $definition->setPublic(true);
 
         $container = new ContainerBuilder();
@@ -92,7 +92,7 @@ public function testDumpRelativeDir()
         $definition = new Definition();
         $definition->setClass('stdClass');
         $definition->addArgument('%foo%');
-        $definition->addArgument(array('%foo%' => '%buz%/'));
+        $definition->addArgument(['%foo%' => '%buz%/']);
         $definition->setPublic(true);
 
         $container = new ContainerBuilder();
@@ -104,7 +104,7 @@ public function testDumpRelativeDir()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services12.php', $dumper->dump(array('file' => __FILE__)), '->dump() dumps __DIR__ relative strings');
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services12.php', $dumper->dump(['file' => __FILE__]), '->dump() dumps __DIR__ relative strings');
     }
 
     public function testDumpCustomContainerClassWithoutConstructor()
@@ -114,7 +114,7 @@ public function testDumpCustomContainerClassWithoutConstructor()
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_without_constructor.php', $dumper->dump(array('base_class' => 'NoConstructorContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_without_constructor.php', $dumper->dump(['base_class' => 'NoConstructorContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container']));
     }
 
     public function testDumpCustomContainerClassConstructorWithoutArguments()
@@ -124,7 +124,7 @@ public function testDumpCustomContainerClassConstructorWithoutArguments()
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_constructor_without_arguments.php', $dumper->dump(array('base_class' => 'ConstructorWithoutArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_constructor_without_arguments.php', $dumper->dump(['base_class' => 'ConstructorWithoutArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container']));
     }
 
     public function testDumpCustomContainerClassWithOptionalArgumentLessConstructor()
@@ -134,7 +134,7 @@ public function testDumpCustomContainerClassWithOptionalArgumentLessConstructor(
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_with_optional_constructor_arguments.php', $dumper->dump(array('base_class' => 'ConstructorWithOptionalArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_with_optional_constructor_arguments.php', $dumper->dump(['base_class' => 'ConstructorWithOptionalArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container']));
     }
 
     public function testDumpCustomContainerClassWithMandatoryArgumentLessConstructor()
@@ -144,7 +144,7 @@ public function testDumpCustomContainerClassWithMandatoryArgumentLessConstructor
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_with_mandatory_constructor_arguments.php', $dumper->dump(array('base_class' => 'ConstructorWithMandatoryArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_with_mandatory_constructor_arguments.php', $dumper->dump(['base_class' => 'ConstructorWithMandatoryArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container']));
     }
 
     /**
@@ -161,12 +161,12 @@ public function testExportParameters($parameters)
 
     public function provideInvalidParameters()
     {
-        return array(
-            array(array('foo' => new Definition('stdClass'))),
-            array(array('foo' => new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")'))),
-            array(array('foo' => new Reference('foo'))),
-            array(array('foo' => new Variable('foo'))),
-        );
+        return [
+            [['foo' => new Definition('stdClass')]],
+            [['foo' => new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')]],
+            [['foo' => new Reference('foo')]],
+            [['foo' => new Variable('foo')]],
+        ];
     }
 
     public function testAddParameters()
@@ -214,7 +214,7 @@ public function testDumpAsFiles()
         $container->getDefinition('bar')->addTag('hot');
         $container->compile();
         $dumper = new PhpDumper($container);
-        $dump = print_r($dumper->dump(array('as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot')), true);
+        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot']), true);
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace('\\\\Fixtures\\\\includes\\\\foo.php', '/Fixtures/includes/foo.php', $dump);
         }
@@ -238,7 +238,7 @@ public function testAddServiceIdWithUnsupportedCharacters()
         $container->register('bar$!', 'FooClass')->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => $class)));
+        eval('?>'.$dumper->dump(['class' => $class]));
 
         $this->assertTrue(method_exists($class, 'getBarService'));
         $this->assertTrue(method_exists($class, 'getBar2Service'));
@@ -252,7 +252,7 @@ public function testConflictingServiceIds()
         $container->register('foobar', 'FooClass')->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => $class)));
+        eval('?>'.$dumper->dump(['class' => $class]));
 
         $this->assertTrue(method_exists($class, 'getFooBarService'));
         $this->assertTrue(method_exists($class, 'getFoobar2Service'));
@@ -266,10 +266,10 @@ public function testConflictingMethodsWithParent()
         $container->register('foo_bar', 'FooClass')->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array(
+        eval('?>'.$dumper->dump([
             'class' => $class,
             'base_class' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\containers\CustomContainer',
-        )));
+        ]));
 
         $this->assertTrue(method_exists($class, 'getBar2Service'));
         $this->assertTrue(method_exists($class, 'getFoobar2Service'));
@@ -294,12 +294,12 @@ public function testInvalidFactories($factory)
 
     public function provideInvalidFactories()
     {
-        return array(
-            array(array('', 'method')),
-            array(array('class', '')),
-            array(array('...', 'method')),
-            array(array('class', '...')),
-        );
+        return [
+            [['', 'method']],
+            [['class', '']],
+            [['...', 'method']],
+            [['class', '...']],
+        ];
     }
 
     public function testAliases()
@@ -308,7 +308,7 @@ public function testAliases()
         $container->setParameter('foo_bar', 'foo_bar');
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Aliases')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Aliases']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Aliases();
         $foo = $container->get('foo');
@@ -322,7 +322,7 @@ public function testFrozenContainerWithoutAliases()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Frozen_No_Aliases')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Frozen_No_Aliases']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Frozen_No_Aliases();
         $this->assertFalse($container->has('foo'));
@@ -372,12 +372,12 @@ public function testEnvParameter()
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services26.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_EnvParameters', 'file' => self::$fixturesPath.'/php/services26.php')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services26.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_EnvParameters', 'file' => self::$fixturesPath.'/php/services26.php']));
 
         require self::$fixturesPath.'/php/services26.php';
         $container = new \Symfony_DI_PhpDumper_Test_EnvParameters();
         $this->assertSame($rand, $container->getParameter('baz'));
-        $this->assertSame(array(123, 'abc'), $container->getParameter('json'));
+        $this->assertSame([123, 'abc'], $container->getParameter('json'));
         $this->assertSame('sqlite:///foo/bar/var/data.db', $container->getParameter('db_dsn'));
         putenv('Baz');
     }
@@ -389,10 +389,10 @@ public function testResolvedBase64EnvParameters()
         $container->setParameter('hello', '%env(base64:foo)%');
         $container->compile(true);
 
-        $expected = array(
+        $expected = [
             'env(foo)' => 'd29ybGQ=',
             'hello' => 'world',
-        );
+        ];
         $this->assertSame($expected, $container->getParameterBag()->all());
     }
 
@@ -406,7 +406,7 @@ public function testDumpedBase64EnvParameters()
         $dumper = new PhpDumper($container);
         $dumper->dump();
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_base64_env.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Base64Parameters')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_base64_env.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Base64Parameters']));
 
         require self::$fixturesPath.'/php/services_base64_env.php';
         $container = new \Symfony_DI_PhpDumper_Test_Base64Parameters();
@@ -424,7 +424,7 @@ public function testCustomEnvParameters()
         $dumper = new PhpDumper($container);
         $dumper->dump();
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_rot13_env.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Rot13Parameters')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_rot13_env.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Rot13Parameters']));
 
         require self::$fixturesPath.'/php/services_rot13_env.php';
         $container = new \Symfony_DI_PhpDumper_Test_Rot13Parameters();
@@ -466,7 +466,7 @@ public function testCircularDynamicEnv()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        $dump = $dumper->dump(array('class' => $class = __FUNCTION__));
+        $dump = $dumper->dump(['class' => $class = __FUNCTION__]);
 
         eval('?>'.$dump);
         $container = new $class();
@@ -482,7 +482,7 @@ public function testCircularDynamicEnv()
     public function testInlinedDefinitionReferencingServiceContainer()
     {
         $container = new ContainerBuilder();
-        $container->register('foo', 'stdClass')->addMethodCall('add', array(new Reference('service_container')))->setPublic(false);
+        $container->register('foo', 'stdClass')->addMethodCall('add', [new Reference('service_container')])->setPublic(false);
         $container->register('bar', 'stdClass')->addArgument(new Reference('foo'))->setPublic(true);
         $container->compile();
 
@@ -517,7 +517,7 @@ public function testInitializePropertiesBeforeMethodCalls()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Properties_Before_Method_Calls')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Properties_Before_Method_Calls']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Properties_Before_Method_Calls();
         $this->assertTrue($container->get('bar')->callPassed(), '->dump() initializes properties before method calls');
@@ -571,15 +571,15 @@ public function testLazyArgumentProvideGenerator()
         $container
             ->register('lazy_context', 'LazyContext')
             ->setPublic(true)
-            ->setArguments(array(
-                new IteratorArgument(array('k1' => new Reference('lazy_referenced'), 'k2' => new Reference('service_container'))),
-                new IteratorArgument(array()),
-            ))
+            ->setArguments([
+                new IteratorArgument(['k1' => new Reference('lazy_referenced'), 'k2' => new Reference('service_container')]),
+                new IteratorArgument([]),
+            ])
         ;
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Lazy_Argument_Provide_Generator')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Lazy_Argument_Provide_Generator']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Lazy_Argument_Provide_Generator();
         $lazyContext = $container->get('lazy_context');
@@ -618,8 +618,8 @@ public function testNormalizedId()
     public function testDumpContainerBuilderWithFrozenConstructorIncludingPrivateServices()
     {
         $container = new ContainerBuilder();
-        $container->register('foo_service', 'stdClass')->setArguments(array(new Reference('baz_service')))->setPublic(true);
-        $container->register('bar_service', 'stdClass')->setArguments(array(new Reference('baz_service')))->setPublic(true);
+        $container->register('foo_service', 'stdClass')->setArguments([new Reference('baz_service')])->setPublic(true);
+        $container->register('bar_service', 'stdClass')->setArguments([new Reference('baz_service')])->setPublic(true);
         $container->register('baz_service', 'stdClass')->setPublic(false);
         $container->compile();
 
@@ -633,20 +633,20 @@ public function testServiceLocator()
         $container = new ContainerBuilder();
         $container->register('foo_service', ServiceLocator::class)
             ->setPublic(true)
-            ->addArgument(array(
+            ->addArgument([
                 'bar' => new ServiceClosureArgument(new Reference('bar_service')),
                 'baz' => new ServiceClosureArgument(new TypedReference('baz_service', 'stdClass')),
                 'nil' => $nil = new ServiceClosureArgument(new Reference('nil')),
-            ))
+            ])
         ;
 
         // no method calls
         $container->register('translator.loader_1', 'stdClass')->setPublic(true);
         $container->register('translator.loader_1_locator', ServiceLocator::class)
             ->setPublic(false)
-            ->addArgument(array(
+            ->addArgument([
                 'translator.loader_1' => new ServiceClosureArgument(new Reference('translator.loader_1')),
-            ));
+            ]);
         $container->register('translator_1', StubbedTranslator::class)
             ->setPublic(true)
             ->addArgument(new Reference('translator.loader_1_locator'));
@@ -655,29 +655,29 @@ public function testServiceLocator()
         $container->register('translator.loader_2', 'stdClass')->setPublic(true);
         $container->register('translator.loader_2_locator', ServiceLocator::class)
             ->setPublic(false)
-            ->addArgument(array(
+            ->addArgument([
                 'translator.loader_2' => new ServiceClosureArgument(new Reference('translator.loader_2')),
-            ));
+            ]);
         $container->register('translator_2', StubbedTranslator::class)
             ->setPublic(true)
             ->addArgument(new Reference('translator.loader_2_locator'))
-            ->addMethodCall('addResource', array('db', new Reference('translator.loader_2'), 'nl'));
+            ->addMethodCall('addResource', ['db', new Reference('translator.loader_2'), 'nl']);
 
         // two method calls
         $container->register('translator.loader_3', 'stdClass')->setPublic(true);
         $container->register('translator.loader_3_locator', ServiceLocator::class)
             ->setPublic(false)
-            ->addArgument(array(
+            ->addArgument([
                 'translator.loader_3' => new ServiceClosureArgument(new Reference('translator.loader_3')),
-            ));
+            ]);
         $container->register('translator_3', StubbedTranslator::class)
             ->setPublic(true)
             ->addArgument(new Reference('translator.loader_3_locator'))
-            ->addMethodCall('addResource', array('db', new Reference('translator.loader_3'), 'nl'))
-            ->addMethodCall('addResource', array('db', new Reference('translator.loader_3'), 'en'));
+            ->addMethodCall('addResource', ['db', new Reference('translator.loader_3'), 'nl'])
+            ->addMethodCall('addResource', ['db', new Reference('translator.loader_3'), 'en']);
 
-        $nil->setValues(array(null));
-        $container->register('bar_service', 'stdClass')->setArguments(array(new Reference('baz_service')))->setPublic(true);
+        $nil->setValues([null]);
+        $container->register('bar_service', 'stdClass')->setArguments([new Reference('baz_service')])->setPublic(true);
         $container->register('baz_service', 'stdClass')->setPublic(false);
         $container->compile();
 
@@ -693,10 +693,10 @@ public function testServiceSubscriber()
             ->setPublic(true)
             ->setAutowired(true)
             ->addArgument(new Reference(ContainerInterface::class))
-            ->addTag('container.service_subscriber', array(
+            ->addTag('container.service_subscriber', [
                 'key' => 'bar',
                 'id' => TestServiceSubscriber::class,
-            ))
+            ])
         ;
         $container->register(TestServiceSubscriber::class, TestServiceSubscriber::class)->setPublic(true);
 
@@ -718,11 +718,11 @@ public function testPrivateWithIgnoreOnInvalidReference()
             ->setPublic(false);
         $container->register('bar', 'BarClass')
             ->setPublic(true)
-            ->addMethodCall('setBaz', array(new Reference('not_invalid', SymfonyContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
+            ->addMethodCall('setBaz', [new Reference('not_invalid', SymfonyContainerInterface::IGNORE_ON_INVALID_REFERENCE)]);
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Private_With_Ignore_On_Invalid_Reference')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Private_With_Ignore_On_Invalid_Reference']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Private_With_Ignore_On_Invalid_Reference();
         $this->assertInstanceOf('BazClass', $container->get('bar')->getBaz());
@@ -731,16 +731,16 @@ public function testPrivateWithIgnoreOnInvalidReference()
     public function testArrayParameters()
     {
         $container = new ContainerBuilder();
-        $container->setParameter('array_1', array(123));
-        $container->setParameter('array_2', array(__DIR__));
+        $container->setParameter('array_1', [123]);
+        $container->setParameter('array_2', [__DIR__]);
         $container->register('bar', 'BarClass')
             ->setPublic(true)
-            ->addMethodCall('setBaz', array('%array_1%', '%array_2%', '%%array_1%%', array(123)));
+            ->addMethodCall('setBaz', ['%array_1%', '%array_2%', '%%array_1%%', [123]]);
         $container->compile();
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_array_params.php', str_replace('\\\\Dumper', '/Dumper', $dumper->dump(array('file' => self::$fixturesPath.'/php/services_array_params.php'))));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_array_params.php', str_replace('\\\\Dumper', '/Dumper', $dumper->dump(['file' => self::$fixturesPath.'/php/services_array_params.php'])));
     }
 
     public function testExpressionReferencingPrivateService()
@@ -766,7 +766,7 @@ public function testUninitializedReference()
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_uninitialized_ref.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Uninitialized_Reference')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_uninitialized_ref.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Uninitialized_Reference']));
 
         require self::$fixturesPath.'/php/services_uninitialized_ref.php';
 
@@ -780,7 +780,7 @@ public function testUninitializedReference()
         $this->assertNull($bar->closures[0]());
         $this->assertNull($bar->closures[1]());
         $this->assertNull($bar->closures[2]());
-        $this->assertSame(array(), iterator_to_array($bar->iter));
+        $this->assertSame([], iterator_to_array($bar->iter));
 
         $container = new \Symfony_DI_PhpDumper_Test_Uninitialized_Reference();
 
@@ -795,7 +795,7 @@ public function testUninitializedReference()
         $this->assertEquals(new \stdClass(), $bar->closures[0]());
         $this->assertNull($bar->closures[1]());
         $this->assertEquals(new \stdClass(), $bar->closures[2]());
-        $this->assertEquals(array('foo1' => new \stdClass(), 'foo3' => new \stdClass()), iterator_to_array($bar->iter));
+        $this->assertEquals(['foo1' => new \stdClass(), 'foo3' => new \stdClass()], iterator_to_array($bar->iter));
     }
 
     /**
@@ -808,7 +808,7 @@ public function testAlmostCircular($visibility)
         $dumper = new PhpDumper($container);
 
         $container = 'Symfony_DI_PhpDumper_Test_Almost_Circular_'.ucfirst($visibility);
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_almost_circular_'.$visibility.'.php', $dumper->dump(array('class' => $container)));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_almost_circular_'.$visibility.'.php', $dumper->dump(['class' => $container]));
 
         require self::$fixturesPath.'/php/services_almost_circular_'.$visibility.'.php';
 
@@ -820,7 +820,7 @@ public function testAlmostCircular($visibility)
         $foo2 = $container->get('foo2');
         $this->assertSame($foo2, $foo2->bar->foobar->foo);
 
-        $this->assertSame(array(), (array) $container->get('foobar4'));
+        $this->assertSame([], (array) $container->get('foobar4'));
 
         $foo5 = $container->get('foo5');
         $this->assertSame($foo5, $foo5->bar->foo);
@@ -832,15 +832,15 @@ public function testAlmostCircular($visibility)
         $this->assertEquals(new \stdClass(), $manager);
 
         $foo6 = $container->get('foo6');
-        $this->assertEquals((object) array('bar6' => (object) array()), $foo6);
+        $this->assertEquals((object) ['bar6' => (object) []], $foo6);
 
         $this->assertInstanceOf(\stdClass::class, $container->get('root'));
     }
 
     public function provideAlmostCircular()
     {
-        yield array('public');
-        yield array('private');
+        yield ['public'];
+        yi
10000
eld ['private'];
     }
 
     public function testDeepServiceGraph()
@@ -855,14 +855,14 @@ public function testDeepServiceGraph()
         $dumper = new PhpDumper($container);
         $dumper->dump();
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_deep_graph.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Deep_Graph')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_deep_graph.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Deep_Graph']));
 
         require self::$fixturesPath.'/php/services_deep_graph.php';
 
         $container = new \Symfony_DI_PhpDumper_Test_Deep_Graph();
 
         $this->assertInstanceOf(FooForDeepGraph::class, $container->get('foo'));
-        $this->assertEquals((object) array('p2' => (object) array('p3' => (object) array())), $container->get('foo')->bClone);
+        $this->assertEquals((object) ['p2' => (object) ['p3' => (object) []]], $container->get('foo')->bClone);
     }
 
     public function testInlineSelfRef()
@@ -884,7 +884,7 @@ public function testInlineSelfRef()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_inline_self_ref.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Inline_Self_Ref')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_inline_self_ref.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Inline_Self_Ref']));
     }
 
     public function testHotPathOptimizations()
@@ -894,7 +894,7 @@ public function testHotPathOptimizations()
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $dump = $dumper->dump(array('hot_path_tag' => 'container.hot_path', 'inline_class_loader_parameter' => 'inline_requires', 'file' => self::$fixturesPath.'/php/services_inline_requires.php'));
+        $dump = $dumper->dump(['hot_path_tag' => 'container.hot_path', 'inline_class_loader_parameter' => 'inline_requires', 'file' => self::$fixturesPath.'/php/services_inline_requires.php']);
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace("'\\\\includes\\\\HotPath\\\\", "'/includes/HotPath/", $dump);
         }
@@ -909,7 +909,7 @@ public function testDumpHandlesLiteralClassWithRootNamespace()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Literal_Class_With_Root_Namespace')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Literal_Class_With_Root_Namespace']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Literal_Class_With_Root_Namespace();
 
@@ -918,23 +918,23 @@ public function testDumpHandlesLiteralClassWithRootNamespace()
 
     public function testDumpHandlesObjectClassNames()
     {
-        $container = new ContainerBuilder(new ParameterBag(array(
+        $container = new ContainerBuilder(new ParameterBag([
             'class' => 'stdClass',
-        )));
+        ]));
 
         $container->setDefinition('foo', new Definition(new Parameter('class')));
-        $container->setDefinition('bar', new Definition('stdClass', array(
+        $container->setDefinition('bar', new Definition('stdClass', [
             new Reference('foo'),
-        )))->setPublic(true);
+        ]))->setPublic(true);
 
         $container->setParameter('inline_requires', true);
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array(
+        eval('?>'.$dumper->dump([
             'class' => 'Symfony_DI_PhpDumper_Test_Object_Class_Name',
             'inline_class_loader_parameter' => 'inline_requires',
-        )));
+        ]));
 
         $container = new \Symfony_DI_PhpDumper_Test_Object_Class_Name();
 
@@ -951,17 +951,17 @@ public function testUninitializedSyntheticReference()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array(
+        eval('?>'.$dumper->dump([
             'class' => 'Symfony_DI_PhpDumper_Test_UninitializedSyntheticReference',
             'inline_class_loader_parameter' => 'inline_requires',
-        )));
+        ]));
 
         $container = new \Symfony_DI_PhpDumper_Test_UninitializedSyntheticReference();
 
-        $this->assertEquals((object) array('foo' => null), $container->get('bar'));
+        $this->assertEquals((object) ['foo' => null], $container->get('bar'));
 
-        $container->set('foo', (object) array(123));
-        $this->assertEquals((object) array('foo' => (object) array(123)), $container->get('bar'));
+        $container->set('foo', (object) [123]);
+        $this->assertEquals((object) ['foo' => (object) [123]], $container->get('bar'));
     }
 
     public function testAdawsonContainer()
@@ -1007,7 +1007,7 @@ public function testLegacyPrivateServices()
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_legacy_privates.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Legacy_Privates', 'file' => self::$fixturesPath.'/php/services_legacy_privates.php')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_legacy_privates.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Legacy_Privates', 'file' => self::$fixturesPath.'/php/services_legacy_privates.php']));
 
         require self::$fixturesPath.'/php/services_legacy_privates.php';
 
@@ -1044,7 +1044,7 @@ public function testPrivateServiceTriggersDeprecation()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Private_Service_Triggers_Deprecation')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Private_Service_Triggers_Deprecation']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Private_Service_Triggers_Deprecation();
 
@@ -1059,11 +1059,11 @@ public function testPrivateServiceTriggersDeprecation()
      */
     public function testParameterWithMixedCase()
     {
-        $container = new ContainerBuilder(new ParameterBag(array('Foo' => 'bar', 'BAR' => 'foo')));
+        $container = new ContainerBuilder(new ParameterBag(['Foo' => 'bar', 'BAR' => 'foo']));
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Parameter_With_Mixed_Case')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Parameter_With_Mixed_Case']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Parameter_With_Mixed_Case();
 
@@ -1079,11 +1079,11 @@ public function testParameterWithMixedCase()
      */
     public function testParameterWithLowerCase()
     {
-        $container = new ContainerBuilder(new ParameterBag(array('foo' => 'bar')));
+        $container = new ContainerBuilder(new ParameterBag(['foo' => 'bar']));
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Parameter_With_Lower_Case')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Parameter_With_Lower_Case']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Parameter_With_Lower_Case();
 
@@ -1103,11 +1103,11 @@ public function testReferenceWithLowerCaseId()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Reference_With_Lower_Case_Id')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Reference_With_Lower_Case_Id']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Reference_With_Lower_Case_Id();
 
-        $this->assertEquals((object) array('foo' => (object) array()), $container->get('Bar'));
+        $this->assertEquals((object) ['foo' => (object) []], $container->get('Bar'));
     }
 }
 
@@ -1120,7 +1120,7 @@ public function getEnv($prefix, $name, \Closure $getEnv)
 
     public static function getProvidedTypes()
     {
-        return array('rot13' => 'string');
+        return ['rot13' => 'string'];
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/XmlDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/XmlDumperTest.php
index f33b3b8d7073..ac274c6f2626 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/XmlDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/XmlDumperTest.php
@@ -123,8 +123,8 @@ public function provideDecoratedServicesData()
     {
         $fixturesPath = realpath(__DIR__.'/../Fixtures/');
 
-        return array(
-            array("<?xml version=\"1.0\" encoding=\"utf-8\"?>
+        return [
+            ["<?xml version=\"1.0\" encoding=\"utf-8\"?>
 <container xmlns=\"http://symfony.com/schema/dic/services\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd\">
   <services>
     <service id=\"service_container\" class=\"Symfony\Component\DependencyInjection\ContainerInterface\" public=\"true\" synthetic=\"true\"/>
@@ -133,8 +133,8 @@ public function provideDecoratedServicesData()
     <service id=\"Symfony\Component\DependencyInjection\ContainerInterface\" alias=\"service_container\" public=\"false\"/>
   </services>
 </container>
-", include $fixturesPath.'/containers/container15.php'),
-            array("<?xml version=\"1.0\" encoding=\"utf-8\"?>
+", include $fixturesPath.'/containers/container15.php'],
+            ["<?xml version=\"1.0\" encoding=\"utf-8\"?>
 <container xmlns=\"http://symfony.com/schema/dic/services\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd\">
   <services>
     <service id=\"service_container\" class=\"Symfony\Component\DependencyInjection\ContainerInterface\" public=\"true\" synthetic=\"true\"/>
@@ -143,8 +143,8 @@ public function provideDecoratedServicesData()
     <service id=\"Symfony\Component\DependencyInjection\ContainerInterface\" alias=\"service_container\" public=\"false\"/>
   </services>
 </container>
-", include $fixturesPath.'/containers/container16.php'),
-        );
+", include $fixturesPath.'/containers/container16.php'],
+        ];
     }
 
     /**
@@ -163,13 +163,13 @@ public function testCompiledContainerCanBeDumped($containerFile)
 
     public function provideCompiledContainerData()
     {
-        return array(
-            array('container8'),
-            array('container9'),
-            array('container11'),
-            array('container12'),
-            array('container14'),
-        );
+        return [
+            ['container8'],
+            ['container9'],
+            ['container11'],
+            ['container12'],
+            ['container14'],
+        ];
     }
 
     public function testDumpInlinedServices()
@@ -194,7 +194,7 @@ public function testDumpLoad()
         $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml'));
         $loader->load('services_dump_load.xml');
 
-        $this->assertEquals(array(new Reference('bar', ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE)), $container->getDefinition('foo')->getArguments());
+        $this->assertEquals([new Reference('bar', ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE)], $container->getDefinition('foo')->getArguments());
 
         $dumper = new XmlDumper($container);
         $this->assertStringEqualsFile(self::$fixturesPath.'/xml/services_dump_load.xml', $dumper->dump());
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/YamlDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/YamlDumperTest.php
index ff2239fb64d6..49ee8e6f3002 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/YamlDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/YamlDumperTest.php
@@ -75,7 +75,7 @@ public function testDumpLoad()
         $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml'));
         $loader->load('services_dump_load.yml');
 
-        $this->assertEquals(array(new Reference('bar', ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE)), $container->getDefinition('foo')->getArguments());
+        $this->assertEquals([new Reference('bar', ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE)], $container->getDefinition('foo')->getArguments());
 
         $dumper = new YamlDumper($container);
         $this->assertStringEqualsFile(self::$fixturesPath.'/yaml/services_dump_load.yml', $dumper->dump());
diff --git a/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php b/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
index b1ee044e9e5c..972350467a02 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
@@ -31,16 +31,16 @@ public function testGetEnvString($value, $processed)
 
     public function validStrings()
     {
-        return array(
-            array('hello', 'hello'),
-            array('true', 'true'),
-            array('false', 'false'),
-            array('null', 'null'),
-            array('1', '1'),
-            array('0', '0'),
-            array('1.1', '1.1'),
-            array('1e1', '1e1'),
-        );
+        return [
+            ['hello', 'hello'],
+            ['true', 'true'],
+            ['false', 'false'],
+            ['null', 'null'],
+            ['1', '1'],
+            ['0', '0'],
+            ['1.1', '1.1'],
+            ['1e1', '1e1'],
+        ];
     }
 
     /**
@@ -61,15 +61,15 @@ public function testGetEnvBool($value, $processed)
 
     public function validBools()
     {
-        return array(
-            array('true', true),
-            array('false', false),
-            array('null', false),
-            array('1', true),
-            array('0', false),
-            array('1.1', true),
-            array('1e1', true),
-        );
+        return [
+            ['true', true],
+            ['false', false],
+            ['null', false],
+            ['1', true],
+            ['0', false],
+            ['1.1', true],
+            ['1e1', true],
+        ];
     }
 
     /**
@@ -90,11 +90,11 @@ public function testGetEnvInt($value, $processed)
 
     public function validInts()
     {
-        return array(
-            array('1', 1),
-            array('1.1', 1),
-            array('1e1', 10),
-        );
+        return [
+            ['1', 1],
+            ['1.1', 1],
+            ['1e1', 10],
+        ];
     }
 
     /**
@@ -115,11 +115,11 @@ public function testGetEnvIntInvalid($value)
 
     public function invalidInts()
     {
-        return array(
-            array('foo'),
-            array('true'),
-            array('null'),
-        );
+        return [
+            ['foo'],
+            ['true'],
+            ['null'],
+        ];
     }
 
     /**
@@ -140,11 +140,11 @@ public function testGetEnvFloat($value, $processed)
 
     public function validFloats()
     {
-        return array(
-            array('1', 1.0),
-            array('1.1', 1.1),
-            array('1e1', 10.0),
-        );
+        return [
+            ['1', 1.0],
+            ['1.1', 1.1],
+            ['1e1', 10.0],
+        ];
     }
 
     /**
@@ -165,11 +165,11 @@ public function testGetEnvFloatInvalid($value)
 
     public function invalidFloats()
     {
-        return array(
-            array('foo'),
-            array('true'),
-            array('null'),
-        );
+        return [
+            ['foo'],
+            ['true'],
+            ['null'],
+        ];
     }
 
     /**
@@ -190,10 +190,10 @@ public function testGetEnvConst($value, $processed)
 
     public function validConsts()
     {
-        return array(
-            array('Symfony\Component\DependencyInjection\Tests\EnvVarProcessorTest::TEST_CONST', self::TEST_CONST),
-            array('E_ERROR', E_ERROR),
-        );
+        return [
+            ['Symfony\Component\DependencyInjection\Tests\EnvVarProcessorTest::TEST_CONST', self::TEST_CONST],
+            ['E_ERROR', E_ERROR],
+        ];
     }
 
     /**
@@ -214,10 +214,10 @@ public function testGetEnvConstInvalid($value)
 
     public function invalidConsts()
     {
-        return array(
-            array('Symfony\Component\DependencyInjection\Tests\EnvVarProcessorTest::UNDEFINED_CONST'),
-            array('UNDEFINED_CONST'),
-        );
+        return [
+            ['Symfony\Component\DependencyInjection\Tests\EnvVarProcessorTest::UNDEFINED_CONST'],
+            ['UNDEFINED_CONST'],
+        ];
     }
 
     public function testGetEnvBase64()
@@ -240,10 +240,10 @@ public function testGetEnvJson()
         $result = $processor->getEnv('json', 'foo', function ($name) {
             $this->assertSame('foo', $name);
 
-            return json_encode(array(1));
+            return json_encode([1]);
         });
 
-        $this->assertSame(array(1), $result);
+        $this->assertSame([1], $result);
     }
 
     /**
@@ -279,12 +279,12 @@ public function testGetEnvJsonOther($value)
 
     public function otherJsonValues()
     {
-        return array(
-            array(1),
-            array(1.1),
-            array(true),
-            array(false),
-        );
+        return [
+            [1],
+            [1.1],
+            [true],
+            [false],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Extension/ExtensionTest.php b/src/Symfony/Component/DependencyInjection/Tests/Extension/ExtensionTest.php
index 9f66bfd7c680..3c912f2a1367 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Extension/ExtensionTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Extension/ExtensionTest.php
@@ -23,15 +23,15 @@ class ExtensionTest extends TestCase
     public function testIsConfigEnabledReturnsTheResolvedValue($enabled)
     {
         $extension = new EnableableExtension();
-        $this->assertSame($enabled, $extension->isConfigEnabled(new ContainerBuilder(), array('enabled' => $enabled)));
+        $this->assertSame($enabled, $extension->isConfigEnabled(new ContainerBuilder(), ['enabled' => $enabled]));
     }
 
     public function getResolvedEnabledFixtures()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     /**
@@ -42,7 +42,7 @@ public function testIsConfigEnabledOnNonEnableableConfig()
     {
         $extension = new EnableableExtension();
 
-        $extension->isConfigEnabled(new ContainerBuilder(), array());
+        $extension->isConfigEnabled(new ContainerBuilder(), []);
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/DirectoryLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/DirectoryLoaderTest.php
index 559abbe25b81..c7c303b683d9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/DirectoryLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/DirectoryLoaderTest.php
@@ -37,25 +37,25 @@ protected function setUp()
         $locator = new FileLocator(self::$fixturesPath);
         $this->container = new ContainerBuilder();
         $this->loader = new DirectoryLoader($this->container, $locator);
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new PhpFileLoader($this->container, $locator),
             new IniFileLoader($this->container, $locator),
             new YamlFileLoader($this->container, $locator),
             $this->loader,
-        ));
+        ]);
         $this->loader->setResolver($resolver);
     }
 
     public function testDirectoryCanBeLoadedRecursively()
     {
         $this->loader->load('directory/');
-        $this->assertEquals(array('ini' => 'ini', 'yaml' => 'yaml', 'php' => 'php'), $this->container->getParameterBag()->all(), '->load() takes a single directory');
+        $this->assertEquals(['ini' => 'ini', 'yaml' => 'yaml', 'php' => 'php'], $this->container->getParameterBag()->all(), '->load() takes a single directory');
     }
 
     public function testImports()
     {
         $this->loader->resolve('directory/import/import.yml')->load('directory/import/import.yml');
-        $this->assertEquals(array('ini' => 'ini', 'yaml' => 'yaml'), $this->container->getParameterBag()->all(), '->load() takes a single file that imports a directory');
+        $this->assertEquals(['ini' => 'ini', 'yaml' => 'yaml'], $this->container->getParameterBag()->all(), '->load() takes a single file that imports a directory');
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/FileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/FileLoaderTest.php
index 73015084ab49..065acdf1babc 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/FileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/FileLoaderTest.php
@@ -47,21 +47,21 @@ public function testImportWithGlobPattern()
         $container = new ContainerBuilder();
         $loader = new TestFileLoader($container, new FileLocator(self::$fixturesPath));
 
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new IniFileLoader($container, new FileLocator(self::$fixturesPath.'/ini')),
             new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml')),
             new PhpFileLoader($container, new FileLocator(self::$fixturesPath.'/php')),
             new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml')),
-        ));
+        ]);
 
         $loader->setResolver($resolver);
         $loader->import('{F}ixtures/{xml,yaml}/services2.{yml,xml}');
 
         $actual = $container->getParameterBag()->all();
-        $expected = array(
+        $expected = [
             'a string',
             'foo' => 'bar',
-            'values' => array(
+            'values' => [
                 0,
                 'integer' => 4,
                 100 => null,
@@ -73,14 +73,14 @@ public function testImportWithGlobPattern()
                 'float' => 1.3,
                 1000.3,
                 'a string',
-                array('foo', 'bar'),
-            ),
-            'mixedcase' => array('MixedCaseKey' => 'value'),
+                ['foo', 'bar'],
+            ],
+            'mixedcase' => ['MixedCaseKey' => 'value'],
             'constant' => PHP_EOL,
             'bar' => '%foo%',
             'escape' => '@escapeme',
             'foo_bar' => new Reference('foo_bar'),
-        );
+        ];
 
         $this->assertEquals(array_keys($expected), array_keys($actual), '->load() imports and merges imported files');
     }
@@ -94,15 +94,15 @@ public function testRegisterClasses()
         $loader->registerClasses(new Definition(), 'Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\\', 'Prototype/%sub_dir%/*');
 
         $this->assertEquals(
-            array('service_container', Bar::class),
+            ['service_container', Bar::class],
             array_keys($container->getDefinitions())
         );
         $this->assertEquals(
-            array(
+            [
                 PsrContainerInterface::class,
                 ContainerInterface::class,
                 BarInterface::class,
-            ),
+            ],
             array_keys($container->getAliases())
         );
     }
@@ -127,11 +127,11 @@ public function testRegisterClassesWithExclude()
         $this->assertFalse($container->has(DeeperBaz::class));
 
         $this->assertEquals(
-            array(
+            [
                 PsrContainerInterface::class,
                 ContainerInterface::class,
                 BarInterface::class,
-            ),
+            ],
             array_keys($container->getAliases())
         );
     }
@@ -150,11 +150,11 @@ public function testNestedRegisterClasses()
         $this->assertTrue($container->has(Foo::class));
 
         $this->assertEquals(
-            array(
+            [
                 PsrContainerInterface::class,
                 ContainerInterface::class,
                 FooInterface::class,
-            ),
+            ],
             array_keys($container->getAliases())
         );
 
@@ -179,7 +179,7 @@ public function testMissingParentClass()
         $this->assertTrue($container->has(MissingParent::class));
 
         $this->assertSame(
-            array('While discovering services from namespace "Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\", an error was thrown when processing the class "Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\MissingParent": "Class Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\MissingClass not found".'),
+            ['While discovering services from namespace "Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\", an error was thrown when processing the class "Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\MissingParent": "Class Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\MissingClass not found".'],
             $container->getDefinition(MissingParent::class)->getErrors()
         );
     }
@@ -222,8 +222,8 @@ public function testRegisterClassesWithIncompatibleExclude($resourcePattern, $ex
 
     public function getIncompatibleExcludeTests()
     {
-        yield array('Prototype/*', 'yaml/*', false);
-        yield array('Prototype/OtherDir/*', 'Prototype/*', false);
+        yield ['Prototype/*', 'yaml/*', false];
+        yield ['Prototype/OtherDir/*', 'Prototype/*', false];
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/IniFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/IniFileLoaderTest.php
index c2332f822288..1d7d3a93ebd0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/IniFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/IniFileLoaderTest.php
@@ -30,7 +30,7 @@ protected function setUp()
     public function testIniFileCanBeLoaded()
     {
         $this->loader->load('parameters.ini');
-        $this->assertEquals(array('foo' => 'bar', 'bar' => '%foo%'), $this->container->getParameterBag()->all(), '->load() takes a single file name as its first argument');
+        $this->assertEquals(['foo' => 'bar', 'bar' => '%foo%'], $this->container->getParameterBag()->all(), '->load() takes a single file name as its first argument');
     }
 
     /**
@@ -64,35 +64,35 @@ public function testTypeConversionsWithNativePhp($key, $value, $supported)
 
     public function getTypeConversions()
     {
-        return array(
-            array('true_comment', true, true),
-            array('true', true, true),
-            array('false', false, true),
-            array('on', true, true),
-            array('off', false, true),
-            array('yes', true, true),
-            array('no', false, true),
-            array('none', false, true),
-            array('null', null, true),
-            array('constant', PHP_VERSION, true),
-            array('12', 12, true),
-            array('12_string', '12', true),
-            array('12_quoted_number', 12, false), // INI_SCANNER_RAW removes the double quotes
-            array('12_comment', 12, true),
-            array('12_string_comment', '12', true),
-            array('12_quoted_number_comment', 12, false), // INI_SCANNER_RAW removes the double quotes
-            array('-12', -12, true),
-            array('1', 1, true),
-            array('0', 0, true),
-            array('0b0110', bindec('0b0110'), false), // not supported by INI_SCANNER_TYPED
-            array('11112222333344445555', '1111,2222,3333,4444,5555', true),
-            array('0777', 0777, false), // not supported by INI_SCANNER_TYPED
-            array('255', 0xFF, false), // not supported by INI_SCANNER_TYPED
-            array('100.0', 1e2, false), // not supported by INI_SCANNER_TYPED
-            array('-120.0', -1.2E2, false), // not supported by INI_SCANNER_TYPED
-            array('-10100.1', -10100.1, false), // not supported by INI_SCANNER_TYPED
-            array('-10,100.1', '-10,100.1', true),
-        );
+        return [
+            ['true_comment', true, true],
+            ['true', true, true],
+            ['false', false, true],
+            ['on', true, true],
+            ['off', false, true],
+            ['yes', true, true],
+            ['no', false, true],
+            ['none', false, true],
+            ['null', null, true],
+            ['constant', PHP_VERSION, true],
+            ['12', 12, true],
+            ['12_string', '12', true],
+            ['12_quoted_number', 12, false], // INI_SCANNER_RAW removes the double quotes
+            ['12_comment', 12, true],
+            ['12_string_comment', '12', true],
+            ['12_quoted_number_comment', 12, false], // INI_SCANNER_RAW removes the double quotes
+            ['-12', -12, true],
+            ['1', 1, true],
+            ['0', 0, true],
+            ['0b0110', bindec('0b0110'), false], // not supported by INI_SCANNER_TYPED
+            ['11112222333344445555', '1111,2222,3333,4444,5555', true],
+            ['0777', 0777, false], // not supported by INI_SCANNER_TYPED
+            ['255', 0xFF, false], // not supported by INI_SCANNER_TYPED
+            ['100.0', 1e2, false], // not supported by INI_SCANNER_TYPED
+            ['-120.0', -1.2E2, false], // not supported by INI_SCANNER_TYPED
+            ['-10100.1', -10100.1, false], // not supported by INI_SCANNER_TYPED
+            ['-10,100.1', '-10,100.1', true],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/LoaderResolverTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/LoaderResolverTest.php
index cb2d6ddcc248..9167e18cedca 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/LoaderResolverTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/LoaderResolverTest.php
@@ -33,23 +33,23 @@ protected function setUp()
         self::$fixturesPath = realpath(__DIR__.'/../Fixtures/');
 
         $container = new ContainerBuilder();
-        $this->resolver = new LoaderResolver(array(
+        $this->resolver = new LoaderResolver([
             new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml')),
             new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml')),
             new IniFileLoader($container, new FileLocator(self::$fixturesPath.'/ini')),
             new PhpFileLoader($container, new FileLocator(self::$fixturesPath.'/php')),
             new ClosureLoader($container),
-        ));
+        ]);
     }
 
     public function provideResourcesToLoad()
     {
-        return array(
-            array('ini_with_wrong_ext.xml', 'ini', IniFileLoader::class),
-            array('xml_with_wrong_ext.php', 'xml', XmlFileLoader::class),
-            array('php_with_wrong_ext.yml', 'php', PhpFileLoader::class),
-            array('yaml_with_wrong_ext.ini', 'yaml', YamlFileLoader::class),
-        );
+        return [
+            ['ini_with_wrong_ext.xml', 'ini', IniFileLoader::class],
+            ['xml_with_wrong_ext.php', 'xml', XmlFileLoader::class],
+            ['php_with_wrong_ext.yml', 'php', PhpFileLoader::class],
+            ['yaml_with_wrong_ext.ini', 'yaml', YamlFileLoader::class],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
index e0a21e88051d..4f7c16890b12 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
@@ -66,14 +66,14 @@ public function testConfig($file)
 
     public function provideConfig()
     {
-        yield array('basic');
-        yield array('defaults');
-        yield array('instanceof');
-        yield array('prototype');
-        yield array('child');
+        yield ['basic'];
+        yield ['defaults'];
+        yield ['instanceof'];
+        yield ['prototype'];
+        yield ['child'];
 
         if (\PHP_VERSION_ID >= 70000) {
-            yield array('php7');
+            yield ['php7'];
         }
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
index 2a9ac68e97e4..c265c00e811e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
@@ -112,10 +112,10 @@ public function testLoadParameters()
         $loader->load('services2.xml');
 
         $actual = $container->getParameterBag()->all();
-        $expected = array(
+        $expected = [
             'a string',
             'foo' => 'bar',
-            'values' => array(
+            'values' => [
                 0,
                 'integer' => 4,
                 100 => null,
@@ -127,11 +127,11 @@ public function testLoadParameters()
                 'float' => 1.3,
                 1000.3,
                 'a string',
-                array('foo', 'bar'),
-            ),
-            'mixedcase' => array('MixedCaseKey' => 'value'),
+                ['foo', 'bar'],
+            ],
+            'mixedcase' => ['MixedCaseKey' => 'value'],
             'constant' => PHP_EOL,
-        );
+        ];
 
         $this->assertEquals($expected, $actual, '->load() converts XML values to PHP ones');
     }
@@ -139,19 +139,19 @@ public function testLoadParameters()
     public function testLoadImports()
     {
         $container = new ContainerBuilder();
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new IniFileLoader($container, new FileLocator(self::$fixturesPath.'/ini')),
             new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yml')),
             $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml')),
-        ));
+        ]);
         $loader->setResolver($resolver);
         $loader->load('services4.xml');
 
         $actual = $container->getParameterBag()->all();
-        $expected = array(
+        $expected = [
             'a string',
             'foo' => 'bar',
-            'values' => array(
+            'values' => [
                 0,
                 'integer' => 4,
                 100 => null,
@@ -163,15 +163,15 @@ public function testLoadImports()
                 'float' => 1.3,
                 1000.3,
                 'a string',
-                array('foo', 'bar'),
-            ),
-            'mixedcase' => array('MixedCaseKey' => 'value'),
+                ['foo', 'bar'],
+            ],
+            'mixedcase' => ['MixedCaseKey' => 'value'],
             'constant' => PHP_EOL,
             'bar' => '%foo%',
             'imported_from_ini' => true,
             'imported_from_yaml' => true,
             'with_wrong_ext' => 'from yaml',
-        );
+        ];
 
         $this->assertEquals(array_keys($expected), array_keys($actual), '->load() imports and merges imported files');
         $this->assertTrue($actual['imported_from_ini']);
@@ -266,16 +266,16 @@ public function testLoadServices()
         $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Definition', $services['foo'], '->load() converts <service> element to Definition instances');
         $this->assertEquals('FooClass', $services['foo']->getClass(), '->load() parses the class attribute');
         $this->assertEquals('%path%/foo.php', $services['file']->getFile(), '->load() parses the file tag');
-        $this->assertEquals(array('foo', new Reference('foo'), array(true, false)), $services['arguments']->getArguments(), '->load() parses the argument tags');
+        $this->assertEquals(['foo', new Reference('foo'), [true, false]], $services['arguments']->getArguments(), '->load() parses the argument tags');
         $this->assertEquals('sc_configure', $services['configurator1']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array(new Reference('baz'), 'configure'), $services['configurator2']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array('BazClass', 'configureStatic'), $services['configurator3']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array(array('setBar', array()), array('setBar', array(new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')))), $services['method_call1']->getMethodCalls(), '->load() parses the method_call tag');
-        $this->assertEquals(array(array('setBar', array('foo', new Reference('foo'), array(true, false)))), $services['method_call2']->getMethodCalls(), '->load() parses the method_call tag');
+        $this->assertEquals([new Reference('baz'), 'configure'], $services['configurator2']->getConfigurator(), '->load() parses the configurator tag');
+        $this->assertEquals(['BazClass', 'configureStatic'], $services['configurator3']->getConfigurator(), '->load() parses the configurator tag');
+        $this->assertEquals([['setBar', []], ['setBar', [new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')]]], $services['method_call1']->getMethodCalls(), '->load() parses the method_call tag');
+        $this->assertEquals([['setBar', ['foo', new Reference('foo'), [true, false]]]], $services['method_call2']->getMethodCalls(), '->load() parses the method_call tag');
         $this->assertEquals('factory', $services['new_factory1']->getFactory(), '->load() parses the factory tag');
-        $this->assertEquals(array(new Reference('baz'), 'getClass'), $services['new_factory2']->getFactory(), '->load() parses the factory tag');
-        $this->assertEquals(array('BazClass', 'getInstance'), $services['new_factory3']->getFactory(), '->load() parses the factory tag');
-        $this->assertSame(array(null, 'getInstance'), $services['new_factory4']->getFactory(), '->load() accepts factory tag without class');
+        $this->assertEquals([new Reference('baz'), 'getClass'], $services['new_factory2']->getFactory(), '->load() parses the factory tag');
+        $this->assertEquals(['BazClass', 'getInstance'], $services['new_factory3']->getFactory(), '->load() parses the factory tag');
+        $this->assertSame([null, 'getInstance'], $services['new_factory4']->getFactory(), '->load() accepts factory tag without class');
 
         $aliases = $container->getAliases();
         $this->assertArrayHasKey('alias_for_foo', $aliases, '->load() parses <service> elements');
@@ -285,9 +285,9 @@ public function testLoadServices()
         $this->assertEquals('foo', (string) $aliases['another_alias_for_foo']);
         $this->assertFalse($aliases['another_alias_for_foo']->isPublic());
 
-        $this->assertEquals(array('decorated', null, 0), $services['decorator_service']->getDecoratedService());
-        $this->assertEquals(array('decorated', 'decorated.pif-pouf', 0), $services['decorator_service_with_name']->getDecoratedService());
-        $this->assertEquals(array('decorated', 'decorated.pif-pouf', 5), $services['decorator_service_with_name_and_priority']->getDecoratedService());
+        $this->assertEquals(['decorated', null, 0], $services['decorator_service']->getDecoratedService());
+        $this->assertEquals(['decorated', 'decorated.pif-pouf', 0], $services['decorator_service_with_name']->getDecoratedService());
+        $this->assertEquals(['decorated', 'decorated.pif-pouf', 5], $services['decorator_service_with_name_and_priority']->getDecoratedService());
     }
 
     public function testParsesIteratorArgument()
@@ -298,7 +298,7 @@ public function testParsesIteratorArgument()
 
         $lazyDefinition = $container->getDefinition('lazy_context');
 
-        $this->assertEquals(array(new IteratorArgument(array('k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container'))), new IteratorArgument(array())), $lazyDefinition->getArguments(), '->load() parses lazy arguments');
+        $this->assertEquals([new IteratorArgument(['k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container')]), new IteratorArgument([])], $lazyDefinition->getArguments(), '->load() parses lazy arguments');
     }
 
     public function testParsesTags()
@@ -368,27 +368,27 @@ public function testConvertDomElementToArray()
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo foo="bar" />');
-        $this->assertEquals(array('foo' => 'bar'), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => 'bar'], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo>bar</foo></foo>');
-        $this->assertEquals(array('foo' => 'bar'), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => 'bar'], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo>bar<foo>bar</foo></foo></foo>');
-        $this->assertEquals(array('foo' => array('value' => 'bar', 'foo' => 'bar')), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => ['value' => 'bar', 'foo' => 'bar']], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo></foo></foo>');
-        $this->assertEquals(array('foo' => null), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => null], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo><!-- foo --></foo></foo>');
-        $this->assertEquals(array('foo' => null), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => null], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo foo="bar"/><foo foo="bar"/></foo>');
-        $this->assertEquals(array('foo' => array(array('foo' => 'bar'), array('foo' => 'bar'))), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => [['foo' => 'bar'], ['foo' => 'bar']]], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
     }
 
     public function testExtensions()
@@ -545,7 +545,7 @@ public function testXmlNamespaces()
 
         $this->assertArrayHasKey('foo', $services, '->load() parses <srv:service> elements');
         $this->assertCount(1, $services['foo']->getTag('foo.tag'), '->load parses <srv:tag> elements');
-        $this->assertEquals(array(array('setBar', array('foo'))), $services['foo']->getMethodCalls(), '->load() parses the <srv:call> tag');
+        $this->assertEquals([['setBar', ['foo']]], $services['foo']->getMethodCalls(), '->load() parses the <srv:call> tag');
     }
 
     public function testLoadIndexedArguments()
@@ -554,7 +554,7 @@ public function testLoadIndexedArguments()
         $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml'));
         $loader->load('services14.xml');
 
-        $this->assertEquals(array('index_0' => 'app'), $container->findDefinition('logger')->getArguments());
+        $this->assertEquals(['index_0' => 'app'], $container->findDefinition('logger')->getArguments());
     }
 
     public function testLoadInlinedServices()
@@ -600,7 +600,7 @@ public function testType()
         $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml'));
         $loader->load('services22.xml');
 
-        $this->assertEquals(array('Bar', 'Baz'), $container->getDefinition('foo')->getAutowiringTypes());
+        $this->assertEquals(['Bar', 'Baz'], $container->getDefinition('foo')->getAutowiringTypes());
     }
 
     public function testAutowire()
@@ -630,7 +630,7 @@ public function testPrototype()
 
         $ids = array_keys($container->getDefinitions());
         sort($ids);
-        $this->assertSame(array(Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'), $ids);
+        $this->assertSame([Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'], $ids);
 
         $resources = $container->getResources();
 
@@ -664,7 +664,7 @@ public function testArgumentWithKeyOutsideCollection()
         $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml'));
         $loader->load('with_key_outside_collection.xml');
 
-        $this->assertSame(array('type' => 'foo', 'bar'), $container->getDefinition('foo')->getArguments());
+        $this->assertSame(['type' => 'foo', 'bar'], $container->getDefinition('foo')->getArguments());
     }
 
     public function testDefaults()
@@ -674,7 +674,7 @@ public function testDefaults()
         $loader->load('services28.xml');
 
         $this->assertFalse($container->getDefinition('with_defaults')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('with_defaults')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('with_defaults')->getTags());
         $this->assertTrue($container->getDefinition('with_defaults')->isAutowired());
         $this->assertArrayNotHasKey('public', $container->getDefinition('with_defaults')->getChanges());
         $this->assertArrayNotHasKey('autowire', $container->getDefinition('with_defaults')->getChanges());
@@ -683,12 +683,12 @@ public function testDefaults()
 
         $this->assertTrue($container->getDefinition('no_defaults')->isPublic());
 
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('no_defaults')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('no_defaults')->getTags());
 
         $this->assertFalse($container->getDefinition('no_defaults')->isAutowired());
 
         $this->assertTrue($container->getDefinition('child_def')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('child_def')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('child_def')->getTags());
         $this->assertFalse($container->getDefinition('child_def')->isAutowired());
 
         $definitions = $container->getDefinitions();
@@ -699,7 +699,7 @@ public function testDefaults()
         $this->assertSame('bar', key($definitions));
         $this->assertTrue($anonymous->isPublic());
         $this->assertTrue($anonymous->isAutowired());
-        $this->assertSame(array('foo' => array(array())), $anonymous->getTags());
+        $this->assertSame(['foo' => [[]]], $anonymous->getTags());
     }
 
     public function testNamedArguments()
@@ -708,12 +708,12 @@ public function testNamedArguments()
         $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml'));
         $loader->load('services_named_args.xml');
 
-        $this->assertEquals(array('$apiKey' => 'ABCD', CaseSensitiveClass::class => null), $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
+        $this->assertEquals(['$apiKey' => 'ABCD', CaseSensitiveClass::class => null], $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
 
         $container->compile();
 
-        $this->assertEquals(array(null, 'ABCD'), $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
-        $this->assertEquals(array(array('setApiKey', array('123'))), $container->getDefinition(NamedArgumentsDummy::class)->getMethodCalls());
+        $this->assertEquals([null, 'ABCD'], $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
+        $this->assertEquals([['setApiKey', ['123']]], $container->getDefinition(NamedArgumentsDummy::class)->getMethodCalls());
     }
 
     public function testInstanceof()
@@ -726,7 +726,7 @@ public function testInstanceof()
         $definition = $container->getDefinition(Bar::class);
         $this->assertTrue($definition->isAutowired());
         $this->assertTrue($definition->isLazy());
-        $this->assertSame(array('foo' => array(array()), 'bar' => array(array())), $definition->getTags());
+        $this->assertSame(['foo' => [[]], 'bar' => [[]]], $definition->getTags());
     }
 
     /**
@@ -783,30 +783,30 @@ public function testBindings()
         $container->compile();
 
         $definition = $container->getDefinition('bar');
-        $this->assertEquals(array(
+        $this->assertEquals([
             'NonExistent' => null,
             BarInterface::class => new Reference(Bar::class),
-            '$foo' => array(null),
+            '$foo' => [null],
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
-        $this->assertEquals(array(
+        ], array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        $this->assertEquals([
             'quz',
             null,
             new Reference(Bar::class),
-            array(null),
-        ), $definition->getArguments());
+            [null],
+        ], $definition->getArguments());
 
         $definition = $container->getDefinition(Bar::class);
-        $this->assertEquals(array(
+        $this->assertEquals([
             null,
             'factory',
-        ), $definition->getArguments());
-        $this->assertEquals(array(
+        ], $definition->getArguments());
+        $this->assertEquals([
             'NonExistent' => null,
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        ], array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
     }
 
     public function testTsantosContainer()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
index d8b329a5602b..7bcf0ec05758 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
@@ -83,17 +83,17 @@ public function testLoadInvalidFile($file)
 
     public function provideInvalidFiles()
     {
-        return array(
-            array('bad_parameters'),
-            array('bad_imports'),
-            array('bad_import'),
-            array('bad_services'),
-            array('bad_service'),
-            array('bad_calls'),
-            array('bad_format'),
-            array('nonvalid1'),
-            array('nonvalid2'),
-        );
+        return [
+            ['bad_parameters'],
+            ['bad_imports'],
+            ['bad_import'],
+            ['bad_services'],
+            ['bad_service'],
+            ['bad_calls'],
+            ['bad_format'],
+            ['nonvalid1'],
+            ['nonvalid2'],
+        ];
     }
 
     public function testLoadParameters()
@@ -101,33 +101,33 @@ public function testLoadParameters()
         $container = new ContainerBuilder();
         $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml'));
         $loader->load('services2.yml');
-        $this->assertEquals(array('foo' => 'bar', 'mixedcase' => array('MixedCaseKey' => 'value'), 'values' => array(true, false, 0, 1000.3, PHP_INT_MAX), 'bar' => 'foo', 'escape' => '@escapeme', 'foo_bar' => new Reference('foo_bar')), $container->getParameterBag()->all(), '->load() converts YAML keys to lowercase');
+        $this->assertEquals(['foo' => 'bar', 'mixedcase' => ['MixedCaseKey' => 'value'], 'values' => [true, false, 0, 1000.3, PHP_INT_MAX], 'bar' => 'foo', 'escape' => '@escapeme', 'foo_bar' => new Reference('foo_bar')], $container->getParameterBag()->all(), '->load() converts YAML keys to lowercase');
     }
 
     public function testLoadImports()
     {
         $container = new ContainerBuilder();
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new IniFileLoader($container, new FileLocator(self::$fixturesPath.'/ini')),
             new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml')),
             new PhpFileLoader($container, new FileLocator(self::$fixturesPath.'/php')),
             $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml')),
-        ));
+        ]);
         $loader->setResolver($resolver);
         $loader->load('services4.yml');
 
         $actual = $container->getParameterBag()->all();
-        $expected = array(
+        $expected = [
             'foo' => 'bar',
-            'values' => array(true, false, PHP_INT_MAX),
+            'values' => [true, false, PHP_INT_MAX],
             'bar' => '%foo%',
             'escape' => '@escapeme',
             'foo_bar' => new Reference('foo_bar'),
-            'mixedcase' => array('MixedCaseKey' => 'value'),
+            'mixedcase' => ['MixedCaseKey' => 'value'],
             'imported_from_ini' => true,
             'imported_from_xml' => true,
             'with_wrong_ext' => 'from yaml',
-        );
+        ];
         $this->assertEquals(array_keys($expected), array_keys($actual), '->load() imports and merges imported files');
         $this->assertTrue($actual['imported_from_ini']);
 
@@ -146,17 +146,17 @@ public function testLoadServices()
         $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Definition', $services['foo'], '->load() converts service element to Definition instances');
         $this->assertEquals('FooClass', $services['foo']->getClass(), '->load() parses the class attribute');
         $this->assertEquals('%path%/foo.php', $services['file']->getFile(), '->load() parses the file tag');
-        $this->assertEquals(array('foo', new Reference('foo'), array(true, false)), $services['arguments']->getArguments(), '->load() parses the argument tags');
+        $this->assertEquals(['foo', new Reference('foo'), [true, false]], $services['arguments']->getArguments(), '->load() parses the argument tags');
         $this->assertEquals('sc_configure', $services['configurator1']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array(new Reference('baz'), 'configure'), $services['configurator2']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array('BazClass', 'configureStatic'), $services['configurator3']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array(array('setBar', array()), array('setBar', array()), array('setBar', array(new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')))), $services['method_call1']->getMethodCalls(), '->load() parses the method_call tag');
-        $this->assertEquals(array(array('setBar', array('foo', new Reference('foo'), array(true, false)))), $services['method_call2']->getMethodCalls(), '->load() parses the method_call tag');
+        $this->assertEquals([new Reference('baz'), 'configure'], $services['configurator2']->getConfigurator(), '->load() parses the configurator tag');
+        $this->assertEquals(['BazClass', 'configureStatic'], $services['configurator3']->getConfigurator(), '->load() parses the configurator tag');
+        $this->assertEquals([['setBar', []], ['setBar', []], ['setBar', [new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')]]], $services['method_call1']->getMethodCalls(), '->load() parses the method_call tag');
+        $this->assertEquals([['setBar', ['foo', new Reference('foo'), [true, false]]]], $services['method_call2']->getMethodCalls(), '->load() parses the method_call tag');
         $this->assertEquals('factory', $services['new_factory1']->getFactory(), '->load() parses the factory tag');
-        $this->assertEquals(array(new Reference('baz'), 'getClass'), $services['new_factory2']->getFactory(), '->load() parses the factory tag');
-        $this->assertEquals(array('BazClass', 'getInstance'), $services['new_factory3']->getFactory(), '->load() parses the factory tag');
-        $this->assertSame(array(null, 'getInstance'), $services['new_factory4']->getFactory(), '->load() accepts factory tag without class');
-        $this->assertEquals(array('foo', new Reference('baz')), $services['Acme\WithShortCutArgs']->getArguments(), '->load() parses short service definition');
+        $this->assertEquals([new Reference('baz'), 'getClass'], $services['new_factory2']->getFactory(), '->load() parses the factory tag');
+        $this->assertEquals(['BazClass', 'getInstance'], $services['new_factory3']->getFactory(), '->load() parses the factory tag');
+        $this->assertSame([null, 'getInstance'], $services['new_factory4']->getFactory(), '->load() accepts factory tag without class');
+        $this->assertEquals(['foo', new Reference('baz')], $services['Acme\WithShortCutArgs']->getArguments(), '->load() parses short service definition');
 
         $aliases = $container->getAliases();
         $this->assertArrayHasKey('alias_for_foo', $aliases, '->load() parses aliases');
@@ -169,9 +169,9 @@ public function testLoadServices()
         $this->assertEquals('foo', (string) $aliases['another_third_alias_for_foo']);
         $this->assertTrue($aliases['another_third_alias_for_foo']->isPublic());
 
-        $this->assertEquals(array('decorated', null, 0), $services['decorator_service']->getDecoratedService());
-        $this->assertEquals(array('decorated', 'decorated.pif-pouf', 0), $services['decorator_service_with_name']->getDecoratedService());
-        $this->assertEquals(array('decorated', 'decorated.pif-pouf', 5), $services['decorator_service_with_name_and_priority']->getDecoratedService());
+        $this->assertEquals(['decorated', null, 0], $services['decorator_service']->getDecoratedService());
+        $this->assertEquals(['decorated', 'decorated.pif-pouf', 0], $services['decorator_service_with_name']->getDecoratedService());
+        $this->assertEquals(['decorated', 'decorated.pif-pouf', 5], $services['decorator_service_with_name_and_priority']->getDecoratedService());
     }
 
     public function testLoadFactoryShortSyntax()
@@ -181,8 +181,8 @@ public function testLoadFactoryShortSyntax()
         $loader->load('services14.yml');
         $services = $container->getDefinitions();
 
-        $this->assertEquals(array(new Reference('baz'), 'getClass'), $services['factory']->getFactory(), '->load() parses the factory tag with service:method');
-        $this->assertEquals(array('FooBacFactory', 'createFooBar'), $services['factory_with_static_call']->getFactory(), '->load() parses the factory tag with Class::method');
+        $this->assertEquals([new Reference('baz'), 'getClass'], $services['factory']->getFactory(), '->load() parses the factory tag with service:method');
+        $this->assertEquals(['FooBacFactory', 'createFooBar'], $services['factory_with_static_call']->getFactory(), '->load() parses the factory tag with Class::method');
     }
 
     public function testLoadConfiguratorShortSyntax()
@@ -192,8 +192,8 @@ public function testLoadConfiguratorShortSyntax()
         $loader->load('services_configurator_short_syntax.yml');
         $services = $container->getDefinitions();
 
-        $this->assertEquals(array(new Reference('foo_bar_configurator'), 'configure'), $services['foo_bar']->getConfigurator(), '->load() parses the configurator tag with service:method');
-        $this->assertEquals(array('FooBarConfigurator', 'configureFooBar'), $services['foo_bar_with_static_call']->getConfigurator(), '->load() parses the configurator tag with Class::method');
+        $this->assertEquals([new Reference('foo_bar_configurator'), 'configure'], $services['foo_bar']->getConfigurator(), '->load() parses the configurator tag with service:method');
+        $this->assertEquals(['FooBarConfigurator', 'configureFooBar'], $services['foo_bar_with_static_call']->getConfigurator(), '->load() parses the configurator tag with Class::method');
     }
 
     public function testExtensions()
@@ -229,7 +229,7 @@ public function testExtensionWithNullConfig()
         $loader->load('null_config.yml');
         $container->compile();
 
-        $this->assertSame(array(null), $container->getParameter('project.configs'));
+        $this->assertSame([null], $container->getParameter('project.configs'));
     }
 
     public function testSupports()
@@ -295,9 +295,9 @@ public function testLoadYamlOnlyWithKeys()
         $loader->load('services21.yml');
 
         $definition = $container->getDefinition('manager');
-        $this->assertEquals(array(array('setLogger', array(new Reference('logger'))), array('setClass', array('User'))), $definition->getMethodCalls());
-        $this->assertEquals(array(true), $definition->getArguments());
-        $this->assertEquals(array('manager' => array(array('alias' => 'user'))), $definition->getTags());
+        $this->assertEquals([['setLogger', [new Reference('logger')]], ['setClass', ['User']]], $definition->getMethodCalls());
+        $this->assertEquals([true], $definition->getArguments());
+        $this->assertEquals(['manager' => [['alias' => 'user']]], $definition->getTags());
     }
 
     /**
@@ -347,8 +347,8 @@ public function testTypes()
         $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml'));
         $loader->load('services22.yml');
 
-        $this->assertEquals(array('Foo', 'Bar'), $container->getDefinition('foo_service')->getAutowiringTypes());
-        $this->assertEquals(array('Foo'), $container->getDefinition('baz_service')->getAutowiringTypes());
+        $this->assertEquals(['Foo', 'Bar'], $container->getDefinition('foo_service')->getAutowiringTypes());
+        $this->assertEquals(['Foo'], $container->getDefinition('baz_service')->getAutowiringTypes());
     }
 
     public function testParsesIteratorArgument()
@@ -359,7 +359,7 @@ public function testParsesIteratorArgument()
 
         $lazyDefinition = $container->getDefinition('lazy_context');
 
-        $this->assertEquals(array(new IteratorArgument(array('k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container'))), new IteratorArgument(array())), $lazyDefinition->getArguments(), '->load() parses lazy arguments');
+        $this->assertEquals([new IteratorArgument(['k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container')]), new IteratorArgument([])], $lazyDefinition->getArguments(), '->load() parses lazy arguments');
     }
 
     public function testAutowire()
@@ -389,7 +389,7 @@ public function testPrototype()
 
         $ids = array_keys($container->getDefinitions());
         sort($ids);
-        $this->assertSame(array(Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'), $ids);
+        $this->assertSame([Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'], $ids);
 
         $resources = $container->getResources();
 
@@ -410,13 +410,13 @@ public function testPrototypeWithNamespace()
         $ids = array_keys($container->getDefinitions());
         sort($ids);
 
-        $this->assertSame(array(
+        $this->assertSame([
             Prototype\OtherDir\Component1\Dir1\Service1::class,
             Prototype\OtherDir\Component1\Dir2\Service2::class,
             Prototype\OtherDir\Component2\Dir1\Service4::class,
             Prototype\OtherDir\Compo
10000
nent2\Dir2\Service5::class,
             'service_container',
-        ), $ids);
+        ], $ids);
 
         $this->assertTrue($container->getDefinition(Prototype\OtherDir\Component1\Dir1\Service1::class)->hasTag('foo'));
         $this->assertTrue($container->getDefinition(Prototype\OtherDir\Component2\Dir1\Service4::class)->hasTag('foo'));
@@ -447,7 +447,7 @@ public function testDefaults()
         $loader->load('services28.yml');
 
         $this->assertFalse($container->getDefinition('with_defaults')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('with_defaults')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('with_defaults')->getTags());
         $this->assertTrue($container->getDefinition('with_defaults')->isAutowired());
         $this->assertArrayNotHasKey('public', $container->getDefinition('with_defaults')->getChanges());
         $this->assertArrayNotHasKey('autowire', $container->getDefinition('with_defaults')->getChanges());
@@ -456,7 +456,7 @@ public function testDefaults()
         $this->assertFalse($container->getAlias('with_defaults_aliased_short')->isPublic());
 
         $this->assertFalse($container->getDefinition('Acme\WithShortCutArgs')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('Acme\WithShortCutArgs')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('Acme\WithShortCutArgs')->getTags());
         $this->assertTrue($container->getDefinition('Acme\WithShortCutArgs')->isAutowired());
 
         $container->compile();
@@ -465,14 +465,14 @@ public function testDefaults()
         $this->assertTrue($container->getDefinition('no_defaults')->isPublic());
 
         // foo tag is inherited from defaults
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('with_null')->getTags());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('no_defaults')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('with_null')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('no_defaults')->getTags());
 
         $this->assertTrue($container->getDefinition('with_null')->isAutowired());
         $this->assertFalse($container->getDefinition('no_defaults')->isAutowired());
 
         $this->assertTrue($container->getDefinition('child_def')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('child_def')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('child_def')->getTags());
         $this->assertFalse($container->getDefinition('child_def')->isAutowired());
     }
 
@@ -482,14 +482,14 @@ public function testNamedArguments()
         $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml'));
         $loader->load('services_named_args.yml');
 
-        $this->assertEquals(array(null, '$apiKey' => 'ABCD'), $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
-        $this->assertEquals(array('$apiKey' => 'ABCD', CaseSensitiveClass::class => null), $container->getDefinition('another_one')->getArguments());
+        $this->assertEquals([null, '$apiKey' => 'ABCD'], $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
+        $this->assertEquals(['$apiKey' => 'ABCD', CaseSensitiveClass::class => null], $container->getDefinition('another_one')->getArguments());
 
         $container->compile();
 
-        $this->assertEquals(array(null, 'ABCD'), $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
-        $this->assertEquals(array(null, 'ABCD'), $container->getDefinition('another_one')->getArguments());
-        $this->assertEquals(array(array('setApiKey', array('123'))), $container->getDefinition('another_one')->getMethodCalls());
+        $this->assertEquals([null, 'ABCD'], $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
+        $this->assertEquals([null, 'ABCD'], $container->getDefinition('another_one')->getArguments());
+        $this->assertEquals([['setApiKey', ['123']]], $container->getDefinition('another_one')->getMethodCalls());
     }
 
     public function testInstanceof()
@@ -502,7 +502,7 @@ public function testInstanceof()
         $definition = $container->getDefinition(Bar::class);
         $this->assertTrue($definition->isAutowired());
         $this->assertTrue($definition->isLazy());
-        $this->assertSame(array('foo' => array(array()), 'bar' => array(array())), $definition->getTags());
+        $this->assertSame(['foo' => [[]], 'bar' => [[]]], $definition->getTags());
     }
 
     /**
@@ -707,29 +707,29 @@ public function testBindings()
         $container->compile();
 
         $definition = $container->getDefinition('bar');
-        $this->assertEquals(array(
+        $this->assertEquals([
             'NonExistent' => null,
             BarInterface::class => new Reference(Bar::class),
-            '$foo' => array(null),
+            '$foo' => [null],
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
-        $this->assertEquals(array(
+        ], array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        $this->assertEquals([
             'quz',
             null,
             new Reference(Bar::class),
-            array(null),
-        ), $definition->getArguments());
+            [null],
+        ], $definition->getArguments());
 
         $definition = $container->getDefinition(Bar::class);
-        $this->assertEquals(array(
+        $this->assertEquals([
             null,
             'factory',
-        ), $definition->getArguments());
-        $this->assertEquals(array(
+        ], $definition->getArguments());
+        $this->assertEquals([
             'NonExistent' => null,
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        ], array_map(function ($v) { return $v->getValues()[0]; }, $definition->getBindings()));
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php
index 9abfb45d6ef9..e7c88d2bb58e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php
@@ -137,7 +137,7 @@ public function testResolveThrowsOnBadDefaultValue()
     {
         $bag = new EnvPlaceholderParameterBag();
         $bag->get('env(ARRAY_VAR)');
-        $bag->set('env(ARRAY_VAR)', array());
+        $bag->set('env(ARRAY_VAR)', []);
         $bag->resolve();
     }
 
@@ -158,7 +158,7 @@ public function testGetEnvAllowsNull()
     public function testGetThrowsOnBadDefaultValue()
     {
         $bag = new EnvPlaceholderParameterBag();
-        $bag->set('env(ARRAY_VAR)', array());
+        $bag->set('env(ARRAY_VAR)', []);
         $bag->get('env(ARRAY_VAR)');
         $bag->resolve();
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/FrozenParameterBagTest.php b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/FrozenParameterBagTest.php
index ef9a66f6cff7..b168e0c20a97 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/FrozenParameterBagTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/FrozenParameterBagTest.php
@@ -18,10 +18,10 @@ class FrozenParameterBagTest extends TestCase
 {
     public function testConstructor()
     {
-        $parameters = array(
+        $parameters = [
             'foo' => 'foo',
             'bar' => 'bar',
-        );
+        ];
         $bag = new FrozenParameterBag($parameters);
         $this->assertEquals($parameters, $bag->all(), '__construct() takes an array of parameters as its first argument');
     }
@@ -31,7 +31,7 @@ public function testConstructor()
      */
     public function testClear()
     {
-        $bag = new FrozenParameterBag(array());
+        $bag = new FrozenParameterBag([]);
         $bag->clear();
     }
 
@@ -40,7 +40,7 @@ public function testClear()
      */
     public function testSet()
     {
-        $bag = new FrozenParameterBag(array());
+        $bag = new FrozenParameterBag([]);
         $bag->set('foo', 'bar');
     }
 
@@ -49,8 +49,8 @@ public function testSet()
      */
     public function testAdd()
     {
-        $bag = new FrozenParameterBag(array());
-        $bag->add(array());
+        $bag = new FrozenParameterBag([]);
+        $bag->add([]);
     }
 
     /**
@@ -58,7 +58,7 @@ public function testAdd()
      */
     public function testRemove()
     {
-        $bag = new FrozenParameterBag(array('foo' => 'bar'));
+        $bag = new FrozenParameterBag(['foo' => 'bar']);
         $bag->remove('foo');
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
index a04cc15c129f..e67e393df779 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
@@ -21,36 +21,36 @@ class ParameterBagTest extends TestCase
 {
     public function testConstructor()
     {
-        $bag = new ParameterBag($parameters = array(
+        $bag = new ParameterBag($parameters = [
             'foo' => 'foo',
             'bar' => 'bar',
-        ));
+        ]);
         $this->assertEquals($parameters, $bag->all(), '__construct() takes an array of parameters as its first argument');
     }
 
     public function testClear()
     {
-        $bag = new ParameterBag($parameters = array(
+        $bag = new ParameterBag($parameters = [
             'foo' => 'foo',
             'bar' => 'bar',
-        ));
+        ]);
         $bag->clear();
-        $this->assertEquals(array(), $bag->all(), '->clear() removes all parameters');
+        $this->assertEquals([], $bag->all(), '->clear() removes all parameters');
     }
 
     public function testRemove()
     {
-        $bag = new ParameterBag(array(
+        $bag = new ParameterBag([
             'foo' => 'foo',
             'bar' => 'bar',
-        ));
+        ]);
         $bag->remove('foo');
-        $this->assertEquals(array('bar' => 'bar'), $bag->all(), '->remove() removes a parameter');
+        $this->assertEquals(['bar' => 'bar'], $bag->all(), '->remove() removes a parameter');
     }
 
     public function testGetSet()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
         $bag->set('bar', 'foo');
         $this->assertEquals('foo', $bag->get('bar'), '->set() sets the value of a new parameter');
 
@@ -71,12 +71,12 @@ public function testGetSet()
      */
     public function testGetThrowParameterNotFoundException($parameterKey, $exceptionMessage)
     {
-        $bag = new ParameterBag(array(
+        $bag = new ParameterBag([
             'foo' => 'foo',
             'bar' => 'bar',
             'baz' => 'baz',
-            'fiz' => array('bar' => array('boo' => 12)),
-        ));
+            'fiz' => ['bar' => ['boo' => 12]],
+        ]);
 
         if (method_exists($this, 'expectException')) {
             $this->expectException(ParameterNotFoundException::class);
@@ -90,18 +90,18 @@ public function testGetThrowParameterNotFoundException($parameterKey, $exception
 
     public function provideGetThrowParameterNotFoundExceptionData()
     {
-        return array(
-            array('foo1', 'You have requested a non-existent parameter "foo1". Did you mean this: "foo"?'),
-            array('bag', 'You have requested a non-existent parameter "bag". Did you mean one of these: "bar", "baz"?'),
-            array('', 'You have requested a non-existent parameter "".'),
+        return [
+            ['foo1', 'You have requested a non-existent parameter "foo1". Did you mean this: "foo"?'],
+            ['bag', 'You have requested a non-existent parameter "bag". Did you mean one of these: "bar", "baz"?'],
+            ['', 'You have requested a non-existent parameter "".'],
 
-            array('fiz.bar.boo', 'You have requested a non-existent parameter "fiz.bar.boo". You cannot access nested array items, do you want to inject "fiz" instead?'),
-        );
+            ['fiz.bar.boo', 'You have requested a non-existent parameter "fiz.bar.boo". You cannot access nested array items, do you want to inject "fiz" instead?'],
+        ];
     }
 
     public function testHas()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
         $this->assertTrue($bag->has('foo'), '->has() returns true if a parameter is defined');
         $this->assertFalse($bag->has('bar'), '->has() returns false if a parameter is not defined');
     }
@@ -115,13 +115,13 @@ public function testHas()
      */
     public function testMixedCase()
     {
-        $bag = new ParameterBag(array(
+        $bag = new ParameterBag([
             'foo' => 'foo',
             'bar' => 'bar',
-        ));
+        ]);
 
         $bag->remove('BAR');
-        $this->assertEquals(array('foo' => 'foo'), $bag->all(), '->remove() converts key to lowercase before removing');
+        $this->assertEquals(['foo' => 'foo'], $bag->all(), '->remove() converts key to lowercase before removing');
 
         $bag->set('Foo', 'baz1');
         $this->assertEquals('baz1', $bag->get('foo'), '->set() converts the key to lowercase');
@@ -132,29 +132,29 @@ public function testMixedCase()
 
     public function testResolveValue()
     {
-        $bag = new ParameterBag(array());
+        $bag = new ParameterBag([]);
         $this->assertEquals('foo', $bag->resolveValue('foo'), '->resolveValue() returns its argument unmodified if no placeholders are found');
 
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
         $this->assertEquals('I\'m a bar', $bag->resolveValue('I\'m a %foo%'), '->resolveValue() replaces placeholders by their values');
-        $this->assertEquals(array('bar' => 'bar'), $bag->resolveValue(array('%foo%' => '%foo%')), '->resolveValue() replaces placeholders in keys and values of arrays');
-        $this->assertEquals(array('bar' => array('bar' => array('bar' => 'bar'))), $bag->resolveValue(array('%foo%' => array('%foo%' => array('%foo%' => '%foo%')))), '->resolveValue() replaces placeholders in nested arrays');
+        $this->assertEquals(['bar' => 'bar'], $bag->resolveValue(['%foo%' => '%foo%']), '->resolveValue() replaces placeholders in keys and values of arrays');
+        $this->assertEquals(['bar' => ['bar' => ['bar' => 'bar']]], $bag->resolveValue(['%foo%' => ['%foo%' => ['%foo%' => '%foo%']]]), '->resolveValue() replaces placeholders in nested arrays');
         $this->assertEquals('I\'m a %%foo%%', $bag->resolveValue('I\'m a %%foo%%'), '->resolveValue() supports % escaping by doubling it');
         $this->assertEquals('I\'m a bar %%foo bar', $bag->resolveValue('I\'m a %foo% %%foo %foo%'), '->resolveValue() supports % escaping by doubling it');
-        $this->assertEquals(array('foo' => array('bar' => array('ding' => 'I\'m a bar %%foo %%bar'))), $bag->resolveValue(array('foo' => array('bar' => array('ding' => 'I\'m a bar %%foo %%bar')))), '->resolveValue() supports % escaping by doubling it');
+        $this->assertEquals(['foo' => ['bar' => ['ding' => 'I\'m a bar %%foo %%bar']]], $bag->resolveValue(['foo' => ['bar' => ['ding' => 'I\'m a bar %%foo %%bar']]]), '->resolveValue() supports % escaping by doubling it');
 
-        $bag = new ParameterBag(array('foo' => true));
+        $bag = new ParameterBag(['foo' => true]);
         $this->assertTrue($bag->resolveValue('%foo%'), '->resolveValue() replaces arguments that are just a placeholder by their value without casting them to strings');
-        $bag = new ParameterBag(array('foo' => null));
+        $bag = new ParameterBag(['foo' => null]);
         $this->assertNull($bag->resolveValue('%foo%'), '->resolveValue() replaces arguments that are just a placeholder by their value without casting them to strings');
 
-        $bag = new ParameterBag(array('foo' => 'bar', 'baz' => '%%%foo% %foo%%% %%foo%% %%%foo%%%'));
+        $bag = new ParameterBag(['foo' => 'bar', 'baz' => '%%%foo% %foo%%% %%foo%% %%%foo%%%']);
         $this->assertEquals('%%bar bar%% %%foo%% %%bar%%', $bag->resolveValue('%baz%'), '->resolveValue() replaces params placed besides escaped %');
 
-        $bag = new ParameterBag(array('baz' => '%%s?%%s'));
+        $bag = new ParameterBag(['baz' => '%%s?%%s']);
         $this->assertEquals('%%s?%%s', $bag->resolveValue('%baz%'), '->resolveValue() is not replacing greedily');
 
-        $bag = new ParameterBag(array());
+        $bag = new ParameterBag([]);
         try {
             $bag->resolveValue('%foobar%');
             $this->fail('->resolveValue() throws an InvalidArgumentException if a placeholder references a non-existent parameter');
@@ -169,7 +169,7 @@ public function testResolveValue()
             $this->assertEquals('You have requested a non-existent parameter "foobar".', $e->getMessage(), '->resolveValue() throws a ParameterNotFoundException if a placeholder references a non-existent parameter');
         }
 
-        $bag = new ParameterBag(array('foo' => 'a %bar%', 'bar' => array()));
+        $bag = new ParameterBag(['foo' => 'a %bar%', 'bar' => []]);
         try {
             $bag->resolveValue('%foo%');
             $this->fail('->resolveValue() throws a RuntimeException when a parameter embeds another non-string parameter');
@@ -177,7 +177,7 @@ public function testResolveValue()
             $this->assertEquals('A string value must be composed of strings and/or numbers, but found parameter "bar" of type array inside string value "a %bar%".', $e->getMessage(), '->resolveValue() throws a RuntimeException when a parameter embeds another non-string parameter');
         }
 
-        $bag = new ParameterBag(array('foo' => '%bar%', 'bar' => '%foobar%', 'foobar' => '%foo%'));
+        $bag = new ParameterBag(['foo' => '%bar%', 'bar' => '%foobar%', 'foobar' => '%foo%']);
         try {
             $bag->resolveValue('%foo%');
             $this->fail('->resolveValue() throws a ParameterCircularReferenceException when a parameter has a circular reference');
@@ -185,7 +185,7 @@ public function testResolveValue()
             $this->assertEquals('Circular reference detected for parameter "foo" ("foo" > "bar" > "foobar" > "foo").', $e->getMessage(), '->resolveValue() throws a ParameterCircularReferenceException when a parameter has a circular reference');
         }
 
-        $bag = new ParameterBag(array('foo' => 'a %bar%', 'bar' => 'a %foobar%', 'foobar' => 'a %foo%'));
+        $bag = new ParameterBag(['foo' => 'a %bar%', 'bar' => 'a %foobar%', 'foobar' => 'a %foo%']);
         try {
             $bag->resolveValue('%foo%');
             $this->fail('->resolveValue() throws a ParameterCircularReferenceException when a parameter has a circular reference');
@@ -193,13 +193,13 @@ public function testResolveValue()
             $this->assertEquals('Circular reference detected for parameter "foo" ("foo" > "bar" > "foobar" > "foo").', $e->getMessage(), '->resolveValue() throws a ParameterCircularReferenceException when a parameter has a circular reference');
         }
 
-        $bag = new ParameterBag(array('host' => 'foo.bar', 'port' => 1337));
+        $bag = new ParameterBag(['host' => 'foo.bar', 'port' => 1337]);
         $this->assertEquals('foo.bar:1337', $bag->resolveValue('%host%:%port%'));
     }
 
     public function testResolveIndicatesWhyAParameterIsNeeded()
     {
-        $bag = new ParameterBag(array('foo' => '%bar%'));
+        $bag = new ParameterBag(['foo' => '%bar%']);
 
         try {
             $bag->resolve();
@@ -207,7 +207,7 @@ public function testResolveIndicatesWhyAParameterIsNeeded()
             $this->assertEquals('The parameter "foo" has a dependency on a non-existent parameter "bar".', $e->getMessage());
         }
 
-        $bag = new ParameterBag(array('foo' => '%bar%'));
+        $bag = new ParameterBag(['foo' => '%bar%']);
 
         try {
             $bag->resolve();
@@ -218,28 +218,28 @@ public function testResolveIndicatesWhyAParameterIsNeeded()
 
     public function testResolveUnescapesValue()
     {
-        $bag = new ParameterBag(array(
-            'foo' => array('bar' => array('ding' => 'I\'m a bar %%foo %%bar')),
+        $bag = new ParameterBag([
+            'foo' => ['bar' => ['ding' => 'I\'m a bar %%foo %%bar']],
             'bar' => 'I\'m a %%foo%%',
-        ));
+        ]);
 
         $bag->resolve();
 
         $this->assertEquals('I\'m a %foo%', $bag->get('bar'), '->resolveValue() supports % escaping by doubling it');
-        $this->assertEquals(array('bar' => array('ding' => 'I\'m a bar %foo %bar')), $bag->get('foo'), '->resolveValue() supports % escaping by doubling it');
+        $this->assertEquals(['bar' => ['ding' => 'I\'m a bar %foo %bar']], $bag->get('foo'), '->resolveValue() supports % escaping by doubling it');
     }
 
     public function testEscapeValue()
     {
         $bag = new ParameterBag();
 
-        $bag->add(array(
-            'foo' => $bag->escapeValue(array('bar' => array('ding' => 'I\'m a bar %foo %bar', 'zero' => null))),
+        $bag->add([
+            'foo' => $bag->escapeValue(['bar' => ['ding' => 'I\'m a bar %foo %bar', 'zero' => null]]),
             'bar' => $bag->escapeValue('I\'m a %foo%'),
-        ));
+        ]);
 
         $this->assertEquals('I\'m a %%foo%%', $bag->get('bar'), '->escapeValue() escapes % by doubling it');
-        $this->assertEquals(array('bar' => array('ding' => 'I\'m a bar %%foo %%bar', 'zero' => null)), $bag->get('foo'), '->escapeValue() escapes % by doubling it');
+        $this->assertEquals(['bar' => ['ding' => 'I\'m a bar %%foo %%bar', 'zero' => null]], $bag->get('foo'), '->escapeValue() escapes % by doubling it');
     }
 
     /**
@@ -247,7 +247,7 @@ public function testEscapeValue()
      */
     public function testResolveStringWithSpacesReturnsString($expected, $test, $description)
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
 
         try {
             $this->assertEquals($expected, $bag->resolveString($test), $description);
@@ -258,11 +258,11 @@ public function testResolveStringWithSpacesReturnsString($expected, $test, $desc
 
     public function stringsWithSpacesProvider()
     {
-        return array(
-            array('bar', '%foo%', 'Parameters must be wrapped by %.'),
-            array('% foo %', '% foo %', 'Parameters should not have spaces.'),
-            array('{% set my_template = "foo" %}', '{% set my_template = "foo" %}', 'Twig-like strings are not parameters.'),
-            array('50% is less than 100%', '50% is less than 100%', 'Text between % signs is allowed, if there are spaces.'),
-        );
+        return [
+            ['bar', '%foo%', 'Parameters must be wrapped by %.'],
+            ['% foo %', '% foo %', 'Parameters should not have spaces.'],
+            ['{% set my_template = "foo" %}', '{% set my_template = "foo" %}', 'Twig-like strings are not parameters.'],
+            ['50% is less than 100%', '50% is less than 100%', 'Text between % signs is allowed, if there are spaces.'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php b/src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php
index aa9790e83379..aa9ebab6816f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php
@@ -20,11 +20,11 @@ class ServiceLocatorTest extends TestCase
 {
     public function testHas()
     {
-        $locator = new ServiceLocator(array(
+        $locator = new ServiceLocator([
             'foo' => function () { return 'bar'; },
             'bar' => function () { return 'baz'; },
             function () { return 'dummy'; },
-        ));
+        ]);
 
         $this->assertTrue($locator->has('foo'));
         $this->assertTrue($locator->has('bar'));
@@ -33,10 +33,10 @@ function () { return 'dummy'; },
 
     public function testGet()
     {
-        $locator = new ServiceLocator(array(
+        $locator = new ServiceLocator([
             'foo' => function () { return 'bar'; },
             'bar' => function () { return 'baz'; },
-        ));
+        ]);
 
         $this->assertSame('bar', $locator->get('foo'));
         $this->assertSame('baz', $locator->get('bar'));
@@ -45,13 +45,13 @@ public function testGet()
     public function testGetDoesNotMemoize()
     {
         $i = 0;
-        $locator = new ServiceLocator(array(
+        $locator = new ServiceLocator([
             'foo' => function () use (&$i) {
                 ++$i;
 
                 return 'bar';
             },
-        ));
+        ]);
 
         $this->assertSame('bar', $locator->get('foo'));
         $this->assertSame('bar', $locator->get('foo'));
@@ -64,10 +64,10 @@ public function testGetDoesNotMemoize()
      */
     public function testGetThrowsOnUndefinedService()
     {
-        $locator = new ServiceLocator(array(
+        $locator = new ServiceLocator([
             'foo' => function () { return 'bar'; },
             'bar' => function () { return 'baz'; },
-        ));
+        ]);
 
         $locator->get('dummy');
     }
@@ -78,9 +78,9 @@ public function testGetThrowsOnUndefinedService()
      */
     public function testThrowsOnUndefinedInternalService()
     {
-        $locator = new ServiceLocator(array(
+        $locator = new ServiceLocator([
             'foo' => function () use (&$locator) { return $locator->get('bar'); },
-        ));
+        ]);
 
         $locator->get('foo');
     }
@@ -91,11 +91,11 @@ public function testThrowsOnUndefinedInternalService()
      */
     public function testThrowsOnCircularReference()
     {
-        $locator = new ServiceLocator(array(
+        $locator = new ServiceLocator([
             'foo' => function () use (&$locator) { return $locator->get('bar'); },
             'bar' => function () use (&$locator) { return $locator->get('baz'); },
             'baz' => function () use (&$locator) { return $locator->get('bar'); },
-        ));
+        ]);
 
         $locator->get('foo');
     }
@@ -109,7 +109,7 @@ public function testThrowsInServiceSubscriber()
         $container = new Container();
         $container->set('foo', new \stdClass());
         $subscriber = new SomeServiceSubscriber();
-        $subscriber->container = new ServiceLocator(array('bar' => function () {}));
+        $subscriber->container = new ServiceLocator(['bar' => function () {}]);
         $subscriber->container = $subscriber->container->withContext('caller', $container);
 
         $subscriber->getFoo();
@@ -124,17 +124,17 @@ public function testGetThrowsServiceNotFoundException()
         $container = new Container();
         $container->set('foo', new \stdClass());
 
-        $locator = new ServiceLocator(array());
+        $locator = new ServiceLocator([]);
         $locator = $locator->withContext('foo', $container);
         $locator->get('foo');
     }
 
     public function testInvoke()
     {
-        $locator = new ServiceLocator(array(
+        $locator = new ServiceLocator([
             'foo' => function () { return 'bar'; },
             'bar' => function () { return 'baz'; },
-        ));
+        ]);
 
         $this->assertSame('bar', $locator('foo'));
         $this->assertSame('baz', $locator('bar'));
@@ -153,6 +153,6 @@ public function getFoo()
 
     public static function getSubscribedServices()
     {
-        return array('bar' => 'stdClass');
+        return ['bar' => 'stdClass'];
     }
 }
diff --git a/src/Symfony/Component/DomCrawler/AbstractUriElement.php b/src/Symfony/Component/DomCrawler/AbstractUriElement.php
index 192d7922f479..7aba8612b538 100644
--- a/src/Symfony/Component/DomCrawler/AbstractUriElement.php
+++ b/src/Symfony/Component/DomCrawler/AbstractUriElement.php
@@ -42,7 +42,7 @@ abstract class AbstractUriElement
      */
     public function __construct(\DOMElement $node, $currentUri, $method = 'GET')
     {
-        if (!\in_array(strtolower(substr($currentUri, 0, 4)), array('http', 'file'))) {
+        if (!\in_array(strtolower(substr($currentUri, 0, 4)), ['http', 'file'])) {
             throw new \InvalidArgumentException(sprintf('Current URI must be an absolute URL ("%s").', $currentUri));
         }
 
@@ -144,7 +144,7 @@ protected function canonicalizePath($path)
             $path .= '/';
         }
 
-        $output = array();
+        $output = [];
 
         foreach (explode('/', $path) as $segment) {
             if ('..' === $segment) {
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index a3228d1bab6c..8e1014dcefbd 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -30,7 +30,7 @@ class Crawler implements \Countable, \IteratorAggregate
     /**
      * @var array A map of manually registered namespaces
      */
-    private $namespaces = array();
+    private $namespaces = [];
 
     /**
      * @var string The base href value
@@ -45,7 +45,7 @@ class Crawler implements \Countable, \IteratorAggregate
     /**
      * @var \DOMElement[]
      */
-    private $nodes = array();
+    private $nodes = [];
 
     /**
      * Whether the Crawler contains HTML or XML content (used when converting CSS to XPath).
@@ -92,7 +92,7 @@ public function getBaseHref()
      */
     public function clear()
     {
-        $this->nodes = array();
+        $this->nodes = [];
         $this->document = null;
     }
 
@@ -208,7 +208,7 @@ public function addHtmlContent($content, $charset = 'UTF-8')
 
         $this->addDocument($dom);
 
-        $base = $this->filterRelativeXPath('descendant-or-self::base')->extract(array('href'));
+        $base = $this->filterRelativeXPath('descendant-or-self::base')->extract(['href']);
 
         $baseHref = current($base);
         if (\count($base) && !empty($baseHref)) {
@@ -363,7 +363,7 @@ public function eq($position)
      */
     public function each(\Closure $closure)
     {
-        $data = array();
+        $data = [];
         foreach ($this->nodes as $i => $node) {
             $data[] = $closure($this->createSubCrawler($node), $i);
         }
@@ -395,7 +395,7 @@ public function slice($offset = 0, $length = null)
      */
     public function reduce(\Closure $closure)
     {
-        $nodes = array();
+        $nodes = [];
         foreach ($this->nodes as $i => $node) {
             if (false !== $closure($this->createSubCrawler($node), $i)) {
                 $nodes[] = $node;
@@ -487,7 +487,7 @@ public function parents()
         }
 
         $node = $this->getNode(0);
-        $nodes = array();
+        $nodes = [];
 
         while ($node = $node->parentNode) {
             if (XML_ELEMENT_NODE === $node->nodeType) {
@@ -513,7 +513,7 @@ public function children()
 
         $node = $this->getNode(0)->firstChild;
 
-        return $this->createSubCrawler($node ? $this->sibling($node) : array());
+        return $this->createSubCrawler($node ? $this->sibling($node) : []);
     }
 
     /**
@@ -605,7 +605,7 @@ public function evaluate($xpath)
             throw new \LogicException('Cannot evaluate the expression on an uninitialized crawler.');
         }
 
-        $data = array();
+        $data = [];
         $domxpath = $this->createDOMXPath($this->document, $this->findNamespacePrefixes($xpath));
 
         foreach ($this->nodes as $node) {
@@ -637,9 +637,9 @@ public function extract($attributes)
         $attributes = (array) $attributes;
         $count = \count($attributes);
 
-        $data = array();
+        $data = [];
         foreach ($this->nodes as $node) {
-            $elements = array();
+            $elements = [];
             foreach ($attributes as $attribute) {
                 if ('_text' === $attribute) {
                     $elements[] = $node->nodeValue;
@@ -780,7 +780,7 @@ public function link($method = 'get')
      */
     public function links()
     {
-        $links = array();
+        $links = [];
         foreach ($this->nodes as $node) {
             if (!$node instanceof \DOMElement) {
                 throw new \InvalidArgumentException(sprintf('The current node list should contain only DOMElement instances, "%s" found.', \get_class($node)));
@@ -821,7 +821,7 @@ public function image()
      */
     public function images()
     {
-        $images = array();
+        $images = [];
         foreach ($this as $node) {
             if (!$node instanceof \DOMElement) {
                 throw new \InvalidArgumentException(sprintf('The current node list should contain only DOMElement instances, "%s" found.', \get_class($node)));
@@ -915,7 +915,7 @@ public static function xpathLiteral($s)
         }
 
         $string = $s;
-        $parts = array();
+        $parts = [];
         while (true) {
             if (false !== $pos = strpos($string, "'")) {
                 $parts[] = sprintf("'%s'", substr($string, 0, $pos));
@@ -965,7 +965,7 @@ private function filterRelativeXPath($xpath)
      */
     private function relativize($xpath)
     {
-        $expressions = array();
+        $expressions = [];
 
         // An expression which will never match to replace expressions which cannot match in the crawler
         // We cannot simply drop
@@ -1083,7 +1083,7 @@ public function getIterator()
      */
     protected function sibling($node, $siblingDir = 'nextSibling')
     {
-        $nodes = array();
+        $nodes = [];
 
         do {
             if ($node !== $this->getNode(0) && 1 === $node->nodeType) {
@@ -1102,7 +1102,7 @@ protected function sibling($node, $siblingDir = 'nextSibling')
      *
      * @throws \InvalidArgumentException
      */
-    private function createDOMXPath(\DOMDocument $document, array $prefixes = array())
+    private function createDOMXPath(\DOMDocument $document, array $prefixes = [])
     {
         $domxpath = new \DOMXPath($document);
 
@@ -1149,7 +1149,7 @@ private function findNamespacePrefixes($xpath)
             return array_unique($matches['prefix']);
         }
 
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php b/src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php
index 6f112b535007..9196628789b1 100644
--- a/src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php
+++ b/src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php
@@ -45,7 +45,7 @@ class ChoiceFormField extends FormField
     public function hasValue()
     {
         // don't send a value for unchecked checkboxes
-        if (\in_array($this->type, array('checkbox', 'radio')) && null === $this->value) {
+        if (\in_array($this->type, ['checkbox', 'radio']) && null === $this->value) {
             return false;
         }
 
@@ -211,7 +211,7 @@ protected function initialize()
         }
 
         $this->value = null;
-        $this->options = array();
+        $this->options = [];
         $this->multiple = false;
 
         if ('input' == $this->node->nodeName) {
@@ -226,7 +226,7 @@ protected function initialize()
             $this->type = 'select';
             if ($this->node->hasAttribute('multiple')) {
                 $this->multiple = true;
-                $this->value = array();
+                $this->value = [];
                 $this->name = str_replace('[]', '', $this->name);
             }
 
@@ -261,7 +261,7 @@ protected function initialize()
      */
     private function buildOptionValue(\DOMElement $node)
     {
-        $option = array();
+        $option = [];
 
         $defaultDefaultValue = 'select' === $this->node->nodeName ? '' : 'on';
         $defaultValue = (isset($node->nodeValue) && !empty($node->nodeValue)) ? $node->nodeValue : $defaultDefaultValue;
@@ -301,7 +301,7 @@ public function containsOption($optionValue, $options)
      */
     public function availableOptionValues()
     {
-        $values = array();
+        $values = [];
 
         foreach ($this->options as $option) {
             $values[] = $option['value'];
diff --git a/src/Symfony/Component/DomCrawler/Field/FileFormField.php b/src/Symfony/Component/DomCrawler/Field/FileFormField.php
index 3288fc135a77..af9c6e6f25ff 100644
--- a/src/Symfony/Component/DomCrawler/Field/FileFormField.php
+++ b/src/Symfony/Component/DomCrawler/Field/FileFormField.php
@@ -27,12 +27,12 @@ class FileFormField extends FormField
      */
     public function setErrorCode($error)
     {
-        $codes = array(UPLOAD_ERR_INI_SIZE, UPLOAD_ERR_FORM_SIZE, UPLOAD_ERR_PARTIAL, UPLOAD_ERR_NO_FILE, UPLOAD_ERR_NO_TMP_DIR, UPLOAD_ERR_CANT_WRITE, UPLOAD_ERR_EXTENSION);
+        $codes = [UPLOAD_ERR_INI_SIZE, UPLOAD_ERR_FORM_SIZE, UPLOAD_ERR_PARTIAL, UPLOAD_ERR_NO_FILE, UPLOAD_ERR_NO_TMP_DIR, UPLOAD_ERR_CANT_WRITE, UPLOAD_ERR_EXTENSION];
         if (!\in_array($error, $codes)) {
             throw new \InvalidArgumentException(sprintf('The error code %s is not valid.', $error));
         }
 
-        $this->value = array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => $error, 'size' => 0);
+        $this->value = ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => $error, 'size' => 0];
     }
 
     /**
@@ -75,7 +75,7 @@ public function setValue($value)
             $value = '';
         }
 
-        $this->value = array('name' => $name, 'type' => '', 'tmp_name' => $value, 'error' => $error, 'size' => $size);
+        $this->value = ['name' => $name, 'type' => '', 'tmp_name' => $value, 'error' => $error, 'size' => $size];
     }
 
     /**
diff --git a/src/Symfony/Component/DomCrawler/Form.php b/src/Symfony/Component/DomCrawler/Form.php
index 47d20a04b688..87ab31485f39 100644
--- a/src/Symfony/Component/DomCrawler/Form.php
+++ b/src/Symfony/Component/DomCrawler/Form.php
@@ -87,7 +87,7 @@ public function setValues(array $values)
      */
     public function getValues()
     {
-        $values = array();
+        $values = [];
         foreach ($this->fields->all() as $name => $field) {
             if ($field->isDisabled()) {
                 continue;
@@ -108,11 +108,11 @@ public function getValues()
      */
     public function getFiles()
     {
-        if (!\in_array($this->getMethod(), array('POST', 'PUT', 'DELETE', 'PATCH'))) {
-            return array();
+        if (!\in_array($this->getMethod(), ['POST', 'PUT', 'DELETE', 'PATCH'])) {
+            return [];
         }
 
-        $files = array();
+        $files = [];
 
         foreach ($this->fields->all() as $name => $field) {
             if ($field->isDisabled()) {
@@ -137,13 +137,13 @@ public function getFiles()
      */
     public function getPhpValues()
     {
-        $values = array();
+        $values = [];
         foreach ($this->getValues() as $name => $value) {
-            $qs = http_build_query(array($name => $value), '', '&');
+            $qs = http_build_query([$name => $value], '', '&');
             if (!empty($qs)) {
                 parse_str($qs, $expandedValue);
                 $varName = substr($name, 0, \strlen(key($expandedValue)));
-                $values = array_replace_recursive($values, array($varName => current($expandedValue)));
+                $values = array_replace_recursive($values, [$varName => current($expandedValue)]);
             }
         }
 
@@ -164,9 +164,9 @@ public function getPhpValues()
      */
     public function getPhpFiles()
     {
-        $values = array();
+        $values = [];
         foreach ($this->getFiles() as $name => $value) {
-            $qs = http_build_query(array($name => $value), '', '&');
+            $qs = http_build_query([$name => $value], '', '&');
             if (!empty($qs)) {
                 parse_str($qs, $expandedValue);
                 $varName = substr($name, 0, \strlen(key($expandedValue)));
@@ -182,7 +182,7 @@ function (&$value, $key) {
 
                 reset($expandedValue);
 
-                $values = array_replace_recursive($values, array($varName => current($expandedValue)));
+                $values = array_replace_recursive($values, [$varName => current($expandedValue)]);
             }
         }
 
@@ -202,9 +202,9 @@ public function getUri()
     {
         $uri = parent::getUri();
 
-        if (!\in_array($this->getMethod(), array('POST', 'PUT', 'DELETE', 'PATCH'))) {
+        if (!\in_array($this->getMethod(), ['POST', 'PUT', 'DELETE', 'PATCH'])) {
             $query = parse_url($uri, PHP_URL_QUERY);
-            $currentParameters = array();
+            $currentParameters = [];
             if ($query) {
                 parse_str($query, $currentParameters);
             }
@@ -379,7 +379,7 @@ public function disableValidation()
     protected function setNode(\DOMElement $node)
     {
         $this->button = $node;
-        if ('button' === $node->nodeName || ('input' === $node->nodeName && \in_array(strtolower($node->getAttribute('type')), array('submit', 'button', 'image')))) {
+        if ('button' === $node->nodeName || ('input' === $node->nodeName && \in_array(strtolower($node->getAttribute('type')), ['submit', 'button', 'image']))) {
             if ($node->hasAttribute('form')) {
                 // if the node has the HTML5-compliant 'form' attribute, use it
                 $formId = $node->getAttribute('form');
@@ -480,7 +480,7 @@ private function addField(\DOMElement $node)
             }
         } elseif ('input' == $nodeName && 'file' == strtolower($node->getAttribute('type'))) {
             $this->set(new Field\FileFormField($node));
-        } elseif ('input' == $nodeName && !\in_array(strtolower($node->getAttribute('type')), array('submit', 'button', 'image'))) {
+        } elseif ('input' == $nodeName && !\in_array(strtolower($node->getAttribute('type')), ['submit', 'button', 'image'])) {
             $this->set(new Field\InputFormField($node));
         } elseif ('textarea' == $nodeName) {
             $this->set(new Field\TextareaFormField($node));
diff --git a/src/Symfony/Component/DomCrawler/FormFieldRegistry.php b/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
index 6398cc60693a..b4ec51290c85 100644
--- a/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
+++ b/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
@@ -20,7 +20,7 @@
  */
 class FormFieldRegistry
 {
-    private $fields = array();
+    private $fields = [];
 
     private $base;
 
@@ -34,7 +34,7 @@ public function add(FormField $field)
         $target = &$this->fields;
         while ($segments) {
             if (!\is_array($target)) {
-                $target = array();
+                $target = [];
             }
             $path = array_shift($segments);
             if ('' === $path) {
@@ -169,7 +169,7 @@ private static function create($base, array $values)
      *
      * @return array The list of fields as array((string) Fully qualified name => (mixed) value)
      */
-    private function walk(array $array, $base = '', array &$output = array())
+    private function walk(array $array, $base = '', array &$output = [])
     {
         foreach ($array as $k => $v) {
             $path = empty($base) ? $k : sprintf('%s[%s]', $base, $k);
@@ -195,7 +195,7 @@ private function walk(array $array, $base = '', array &$output = array())
     private function getSegments($name)
     {
         if (preg_match('/^(?P<base>[^[]+)(?P<extra>(\[.*)|$)/', $name, $m)) {
-            $segments = array($m['base']);
+            $segments = [$m['base']];
             while (!empty($m['extra'])) {
                 $extra = $m['extra'];
                 if (preg_match('/^\[(?P<segment>.*?)\](?P<extra>.*)$/', $extra, $m)) {
@@ -208,6 +208,6 @@ private function getSegments($name)
             return $segments;
         }
 
-        return array($name);
+        return [$name];
     }
 }
diff --git a/src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php b/src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php
index 9b2d1241949d..1be69f06d64a 100644
--- a/src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php
@@ -52,7 +52,7 @@ public function testAdd()
         $crawler->add($this->createNodeList());
         $this->assertEquals('foo', $crawler->filterXPath('//div')->attr('class'), '->add() adds nodes from a \DOMNodeList');
 
-        $list = array();
+        $list = [];
         foreach ($this->createNodeList() as $node) {
             $list[] = $node;
         }
@@ -269,7 +269,7 @@ public function testAddNodeList()
 
     public function testAddNodes()
     {
-        $list = array();
+        $list = [];
         foreach ($this->createNodeList() as $node) {
             $list[] = $node;
         }
@@ -314,7 +314,7 @@ public function testEach()
             return $i.'-'.$node->text();
         });
 
-        $this->assertEquals(array('0-One', '1-Two', '2-Three'), $data, '->each() executes an anonymous function on each node of the list');
+        $this->assertEquals(['0-One', '1-Two', '2-Three'], $data, '->each() executes an anonymous function on each node of the list');
     }
 
     public function testIteration()
@@ -411,11 +411,11 @@ public function testExtract()
     {
         $crawler = $this->createTestCrawler()->filterXPath('//ul[1]/li');
 
-        $this->assertEquals(array('One', 'Two', 'Three'), $crawler->extract('_text'), '->extract() returns an array of extracted data from the node list');
-        $this->assertEquals(array(array('One', 'first'), array('Two', ''), array('Three', '')), $crawler->extract(array('_text', 'class')), '->extract() returns an array of extracted data from the node list');
-        $this->assertEquals(array(array(), array(), array()), $crawler->extract(array()), '->extract() returns empty arrays if the attribute list is empty');
+        $this->assertEquals(['One', 'Two', 'Three'], $crawler->extract('_text'), '->extract() returns an array of extracted data from the node list');
+        $this->assertEquals([['One', 'first'], ['Two', ''], ['Three', '']], $crawler->extract(['_text', 'class']), '->extract() returns an array of extracted data from the node list');
+        $this->assertEquals([[], [], []], $crawler->extract([]), '->extract() returns empty arrays if the attribute list is empty');
 
-        $this->assertEquals(array(), $this->createTestCrawler()->filterXPath('//ol')->extract('_text'), '->extract() returns an empty array if the node list is empty');
+        $this->assertEquals([], $this->createTestCrawler()->filterXPath('//ol')->extract('_text'), '->extract() returns an empty array if the node list is empty');
     }
 
     public function testFilterXpathComplexQueries()
@@ -849,7 +849,7 @@ public function testLinks()
         $links = $crawler->links();
         $this->assertInstanceOf('Symfony\\Component\\DomCrawler\\Link', $links[0], '->links() returns an array of Link instances');
 
-        $this->assertEquals(array(), $this->createTestCrawler()->filterXPath('//ol')->links(), '->links() returns an empty array if the node selection is empty');
+        $this->assertEquals([], $this->createTestCrawler()->filterXPath('//ol')->links(), '->links() returns an empty array if the node selection is empty');
     }
 
     public function testImages()
@@ -861,7 +861,7 @@ public function testImages()
         $images = $crawler->images();
         $this->assertInstanceOf('Symfony\\Component\\DomCrawler\\Image', $images[0], '->images() returns an array of Image instances');
 
-        $this->assertEquals(array(), $this->createTestCrawler()->filterXPath('//ol')->links(), '->links() returns an empty array if the node selection is empty');
+        $this->assertEquals([], $this->createTestCrawler()->filterXPath('//ol')->links(), '->links() returns an empty array if the node selection is empty');
     }
 
     public function testForm()
@@ -874,9 +874,9 @@ public function testForm()
 
         $this->assertEquals($crawler->form()->getFormNode()->getAttribute('id'), $crawler2->form()->getFormNode()->getAttribute('id'), '->form() works on elements with form attribute');
 
-        $this->assertEquals(array('FooName' => 'FooBar', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'), $crawler->form(array('FooName' => 'FooBar'))->getValues(), '->form() takes an array of values to submit as its first argument');
-        $this->assertEquals(array('FooName' => 'FooValue', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'), $crawler->form()->getValues(), '->getValues() returns correct form values');
-        $this->assertEquals(array('FooBarName' => 'FooBarValue', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'), $crawler2->form()->getValues(), '->getValues() returns correct form values');
+        $this->assertEquals(['FooName' => 'FooBar', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'], $crawler->form(['FooName' => 'FooBar'])->getValues(), '->form() takes an array of values to submit as its first argument');
+        $this->assertEquals(['FooName' => 'FooValue', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'], $crawler->form()->getValues(), '->getValues() returns correct form values');
+        $this->assertEquals(['FooBarName' => 'FooBarValue', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'], $crawler2->form()->getValues(), '->getValues() returns correct form values');
 
         try {
             $this->createTestCrawler()->filterXPath('//ol')->form();
@@ -1035,13 +1035,13 @@ public function testBaseTag($baseValue, $linkValue, $expectedUri, $currentUri =
 
     public function getBaseTagData()
     {
-        return array(
-            array('http://base.com', 'link', 'http://base.com/link'),
-            array('//base.com', 'link', 'https://base.com/link', 'https://domain.com', '<base> tag can use a schema-less URL'),
-            array('path/', 'link', 'https://domain.com/path/link', 'https://domain.com', '<base> tag can set a path'),
-            array('http://base.com', '#', 'http://base.com#', 'http://domain.com/path/link', '<base> tag does work with links to an anchor'),
-            array('http://base.com', '', 'http://base.com', 'http://domain.com/path/link', '<base> tag does work with empty links'),
-        );
+        return [
+            ['http://base.com', 'link', 'http://base.com/link'],
+            ['//base.com', 'link', 'https://base.com/link', 'https://domain.com', '<base> tag can use a schema-less URL'],
+            ['path/', 'link', 'https://domain.com/path/link', 'https://domain.com', '<base> tag can set a path'],
+            ['http://base.com', '#', 'http://base.com#', 'http://domain.com/path/link', '<base> tag does work with links to an anchor'],
+            ['http://base.com', '', 'http://base.com', 'http://domain.com/path/link', '<base> tag does work with empty links'],
+        ];
     }
 
     /**
@@ -1055,14 +1055,14 @@ public function testBaseTagWithForm($baseValue, $actionValue, $expectedUri, $cur
 
     public function getBaseTagWithFormData()
     {
-        return array(
-            array('https://base.com/', 'link/', 'https://base.com/link/', 'https://base.com/link/', '<base> tag does work with a path and relative form action'),
-            array('/basepath', '/registration', 'http://domain.com/registration', 'http://domain.com/registration', '<base> tag does work with a path and form action'),
-            array('/basepath', '', 'http://domain.com/registration', 'http://domain.com/registration', '<base> tag does work with a path and empty form action'),
-            array('http://base.com/', '/registration', 'http://base.com/registration', 'http://domain.com/registration', '<base> tag does work with a URL and form action'),
-            array('http://base.com', '', 'http://domain.com/path/form', 'http://domain.com/path/form', '<base> tag does work with a URL and an empty form action'),
-            array('http://base.com/path', '/registration', 'http://base.com/registration', 'http://domain.com/path/form', '<base> tag does work with a URL and form action'),
-        );
+        return [
+            ['https://base.com/', 'link/', 'https://base.com/link/', 'https://base.com/link/', '<base> tag does work with a path and relative form action'],
+            ['/basepath', '/registration', 'http://domain.com/registration', 'http://domain.com/registration', '<base> tag does work with a path and form action'],
+            ['/basepath', '', 'http://domain.com/registration', 'http://domain.com/registration', '<base> tag does work with a path and empty form action'],
+            ['http://base.com/', '/registration', 'http://base.com/registration', 'http://domain.com/registration', '<base> tag does work with a URL and form action'],
+            ['http://base.com', '', 'http://domain.com/path/form', 'http://domain.com/path/form', '<base> tag does work with a URL and an empty form action'],
+            ['http://base.com/path', '/registration', 'http://base.com/registration', 'http://domain.com/path/form', '<base> tag does work with a URL and form action'],
+        ];
     }
 
     public function testCountOfNestedElements()
@@ -1078,7 +1078,7 @@ public function testEvaluateReturnsTypedResultOfXPathExpressionOnADocumentSubset
 
         $result = $crawler->filterXPath('//form/input')->evaluate('substring-before(@name, "Name")');
 
-        $this->assertSame(array('Text', 'Foo', 'Bar'), $result);
+        $this->assertSame(['Text', 'Foo', 'Bar'], $result);
     }
 
     public function testEvaluateReturnsTypedResultOfNamespacedXPathExpressionOnADocumentSubset()
@@ -1087,7 +1087,7 @@ public function testEvaluateReturnsTypedResultOfNamespacedXPathExpressionOnADocu
 
         $result = $crawler->filterXPath('//yt:accessControl/@action')->evaluate('string(.)');
 
-        $this->assertSame(array('comment', 'videoRespond'), $result);
+        $this->assertSame(['comment', 'videoRespond'], $result);
     }
 
     public function testEvaluateReturnsTypedResultOfNamespacedXPathExpression()
@@ -1097,7 +1097,7 @@ public function testEvaluateReturnsTypedResultOfNamespacedXPathExpression()
 
         $result = $crawler->evaluate('string(//youtube:accessControl/@action)');
 
-        $this->assertSame(array('comment'), $result);
+        $this->assertSame(['comment'], $result);
     }
 
     public function testEvaluateReturnsACrawlerIfXPathExpressionEvaluatesToANode()
diff --git a/src/Symfony/Component/DomCrawler/Tests/Field/ChoiceFormFieldTest.php b/src/Symfony/Component/DomCrawler/Tests/Field/ChoiceFormFieldTest.php
index 959228630565..61e776736a4b 100644
--- a/src/Symfony/Component/DomCrawler/Tests/Field/ChoiceFormFieldTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/Field/ChoiceFormFieldTest.php
@@ -25,7 +25,7 @@ public function testInitialize()
             $this->assertTrue(true, '->initialize() throws a \LogicException if the node is not an input or a select');
         }
 
-        $node = $this->createNode('input', '', array('type' => 'text'));
+        $node = $this->createNode('input', '', ['type' => 'text']);
         try {
             $field = new ChoiceFormField($node);
             $this->fail('->initialize() throws a \LogicException if the node is an input with a type different from checkbox or radio');
@@ -36,12 +36,12 @@ public function testInitialize()
 
     public function testGetType()
     {
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
 
         $this->assertEquals('radio', $field->getType(), '->getType() returns radio for radio buttons');
 
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
 
         $this->assertEquals('checkbox', $field->getType(), '->getType() returns radio for a checkbox');
@@ -54,12 +54,12 @@ public function testGetType()
 
     public function testIsMultiple()
     {
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
 
         $this->assertFalse($field->isMultiple(), '->isMultiple() returns false for radio buttons');
 
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
 
         $this->assertFalse($field->isMultiple(), '->isMultiple() returns false for checkboxes');
@@ -69,12 +69,12 @@ public function testIsMultiple()
 
         $this->assertFalse($field->isMultiple(), '->isMultiple() returns false for selects without the multiple attribute');
 
-        $node = $this->createNode('select', '', array('multiple' => 'multiple'));
+        $node = $this->createNode('select', '', ['multiple' => 'multiple']);
         $field = new ChoiceFormField($node);
 
         $this->assertTrue($field->isMultiple(), '->isMultiple() returns true for selects with the multiple attribute');
 
-        $node = $this->createNode('select', '', array('multiple' => ''));
+        $node = $this->createNode('select', '', ['multiple' => '']);
         $field = new ChoiceFormField($node);
 
         $this->assertTrue($field->isMultiple(), '->isMultiple() returns true for selects with an empty multiple attribute');
@@ -82,14 +82,14 @@ public function testIsMultiple()
 
     public function testSelects()
     {
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => false));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => false]);
         $field = new ChoiceFormField($node);
 
         $this->assertTrue($field->hasValue(), '->hasValue() returns true for selects');
         $this->assertEquals('foo', $field->getValue(), '->getValue() returns the first option if none are selected');
         $this->assertFalse($field->isMultiple(), '->isMultiple() returns false when no multiple attribute is defined');
 
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => true));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => true]);
         $field = new ChoiceFormField($node);
 
         $this->assertEquals('bar', $field->getValue(), '->getValue() returns the selected option');
@@ -105,7 +105,7 @@ public function testSelects()
         }
 
         try {
-            $field->setValue(array('foobar'));
+            $field->setValue(['foobar']);
             $this->fail('->setValue() throws an \InvalidArgumentException if the value is an array');
         } catch (\InvalidArgumentException $e) {
             $this->assertTrue(true, '->setValue() throws an \InvalidArgumentException if the value is an array');
@@ -114,7 +114,7 @@ public function testSelects()
 
     public function testSelectWithEmptyBooleanAttribute()
     {
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => true), array(), '');
+        $node = $this->createSelectNode(['foo' => false, 'bar' => true], [], '');
         $field = new ChoiceFormField($node);
 
         $this->assertEquals('bar', $field->getValue());
@@ -122,7 +122,7 @@ public function testSelectWithEmptyBooleanAttribute()
 
     public function testSelectIsDisabled()
     {
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => true), array('disabled' => 'disabled'));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => true], ['disabled' => 'disabled']);
         $field = new ChoiceFormField($node);
 
         $this->assertTrue($field->isDisabled(), '->isDisabled() returns true for selects with a disabled attribute');
@@ -130,27 +130,27 @@ public function testSelectIsDisabled()
 
     public function testMultipleSelects()
     {
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => false), array('multiple' => 'multiple'));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => false], ['multiple' => 'multiple']);
         $field = new ChoiceFormField($node);
 
-        $this->assertEquals(array(), $field->getValue(), '->setValue() returns an empty array if multiple is true and no option is selected');
+        $this->assertEquals([], $field->getValue(), '->setValue() returns an empty array if multiple is true and no option is selected');
 
         $field->setValue('foo');
-        $this->assertEquals(array('foo'), $field->getValue(), '->setValue() returns an array of options if multiple is true');
+        $this->assertEquals(['foo'], $field->getValue(), '->setValue() returns an array of options if multiple is true');
 
         $field->setValue('bar');
-        $this->assertEquals(array('bar'), $field->getValue(), '->setValue() returns an array of options if multiple is true');
+        $this->assertEquals(['bar'], $field->getValue(), '->setValue() returns an array of options if multiple is true');
 
-        $field->setValue(array('foo', 'bar'));
-        $this->assertEquals(array('foo', 'bar'), $field->getValue(), '->setValue() returns an array of options if multiple is true');
+        $field->setValue(['foo', 'bar']);
+        $this->assertEquals(['foo', 'bar'], $field->getValue(), '->setValue() returns an array of options if multiple is true');
 
-        $node = $this->createSelectNode(array('foo' => true, 'bar' => true), array('multiple' => 'multiple'));
+        $node = $this->createSelectNode(['foo' => true, 'bar' => true], ['multiple' => 'multiple']);
         $field = new ChoiceFormField($node);
 
-        $this->assertEquals(array('foo', 'bar'), $field->getValue(), '->getValue() returns the selected options');
+        $this->assertEquals(['foo', 'bar'], $field->getValue(), '->getValue() returns the selected options');
 
         try {
-            $field->setValue(array('foobar'));
+            $field->setValue(['foobar']);
             $this->fail('->setValue() throws an \InvalidArgumentException if the value is not one of the options');
         } catch (\InvalidArgumentException $e) {
             $this->assertTrue(true, '->setValue() throws an \InvalidArgumentException if the value is not one of the options');
@@ -159,18 +159,18 @@ public function testMultipleSelects()
 
     public function testRadioButtons()
     {
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'bar'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'bar']);
         $field->addChoice($node);
 
         $this->assertFalse($field->hasValue(), '->hasValue() returns false when no radio button is selected');
         $this->assertNull($field->getValue(), '->getValue() returns null if no radio button is selected');
         $this->assertFalse($field->isMultiple(), '->isMultiple() returns false for radio buttons');
 
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'bar', 'checked' => 'checked'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'bar', 'checked' => 'checked']);
         $field->addChoice($node);
 
         $this->assertTrue($field->hasValue(), '->hasValue() returns true when a radio button is selected');
@@ -189,9 +189,9 @@ public function testRadioButtons()
 
     public function testRadioButtonsWithEmptyBooleanAttribute()
     {
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'bar', 'check
10000
ed' => ''));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'bar', 'checked' => '']);
         $field->addChoice($node);
 
         $this->assertTrue($field->hasValue(), '->hasValue() returns true when a radio button is selected');
@@ -200,11 +200,11 @@ public function testRadioButtonsWithEmptyBooleanAttribute()
 
     public function testRadioButtonIsDisabled()
     {
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'foo', 'disabled' => 'disabled'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'foo', 'disabled' => 'disabled']);
         $field = new ChoiceFormField($node);
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'bar'));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'bar']);
         $field->addChoice($node);
-        $node = $this->createNode('input', '', array('type' => 'radio', 'name' => 'name', 'value' => 'baz', 'disabled' => ''));
+        $node = $this->createNode('input', '', ['type' => 'radio', 'name' => 'name', 'value' => 'baz', 'disabled' => '']);
         $field->addChoice($node);
 
         $field->select('foo');
@@ -222,7 +222,7 @@ public function testRadioButtonIsDisabled()
 
     public function testCheckboxes()
     {
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name']);
         $field = new ChoiceFormField($node);
 
         $this->assertFalse($field->hasValue(), '->hasValue() returns false when the checkbox is not checked');
@@ -235,18 +235,18 @@ public function testCheckboxes()
             $this->assertTrue(true, '->initialize() throws a \LogicException for checkboxes');
         }
 
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name', 'checked' => 'checked'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name', 'checked' => 'checked']);
         $field = new ChoiceFormField($node);
 
         $this->assertTrue($field->hasValue(), '->hasValue() returns true when the checkbox is checked');
         $this->assertEquals('on', $field->getValue(), '->getValue() returns 1 if the checkbox is checked and has no value attribute');
 
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name', 'checked' => 'checked', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name', 'checked' => 'checked', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
 
         $this->assertEquals('foo', $field->getValue(), '->getValue() returns the value attribute if the checkbox is checked');
 
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name', 'checked' => 'checked', 'value' => 'foo'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name', 'checked' => 'checked', 'value' => 'foo']);
         $field = new ChoiceFormField($node);
 
         $field->setValue(false);
@@ -265,7 +265,7 @@ public function testCheckboxes()
 
     public function testCheckboxWithEmptyBooleanAttribute()
     {
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name', 'value' => 'foo', 'checked' => ''));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name', 'value' => 'foo', 'checked' => '']);
         $field = new ChoiceFormField($node);
 
         $this->assertTrue($field->hasValue(), '->hasValue() returns true when the checkbox is checked');
@@ -274,7 +274,7 @@ public function testCheckboxWithEmptyBooleanAttribute()
 
     public function testTick()
     {
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => false));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => false]);
         $field = new ChoiceFormField($node);
 
         try {
@@ -284,7 +284,7 @@ public function testTick()
             $this->assertTrue(true, '->tick() throws a \LogicException for select boxes');
         }
 
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name']);
         $field = new ChoiceFormField($node);
         $field->tick();
         $this->assertEquals('on', $field->getValue(), '->tick() ticks checkboxes');
@@ -292,7 +292,7 @@ public function testTick()
 
     public function testUntick()
     {
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => false));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => false]);
         $field = new ChoiceFormField($node);
 
         try {
@@ -302,7 +302,7 @@ public function testUntick()
             $this->assertTrue(true, '->untick() throws a \LogicException for select boxes');
         }
 
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name', 'checked' => 'checked'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name', 'checked' => 'checked']);
         $field = new ChoiceFormField($node);
         $field->untick();
         $this->assertNull($field->getValue(), '->untick() unticks checkboxes');
@@ -310,14 +310,14 @@ public function testUntick()
 
     public function testSelect()
     {
-        $node = $this->createNode('input', '', array('type' => 'checkbox', 'name' => 'name', 'checked' => 'checked'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox', 'name' => 'name', 'checked' => 'checked']);
         $field = new ChoiceFormField($node);
         $field->select(true);
         $this->assertEquals('on', $field->getValue(), '->select() changes the value of the field');
         $field->select(false);
         $this->assertNull($field->getValue(), '->select() changes the value of the field');
 
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => false));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => false]);
         $field = new ChoiceFormField($node);
         $field->select('foo');
         $this->assertEquals('foo', $field->getValue(), '->select() changes the selected option');
@@ -325,11 +325,11 @@ public function testSelect()
 
     public function testOptionWithNoValue()
     {
-        $node = $this->createSelectNodeWithEmptyOption(array('foo' => false, 'bar' => false));
+        $node = $this->createSelectNodeWithEmptyOption(['foo' => false, 'bar' => false]);
         $field = new ChoiceFormField($node);
         $this->assertEquals('foo', $field->getValue());
 
-        $node = $this->createSelectNodeWithEmptyOption(array('foo' => false, 'bar' => true));
+        $node = $this->createSelectNodeWithEmptyOption(['foo' => false, 'bar' => true]);
         $field = new ChoiceFormField($node);
         $this->assertEquals('bar', $field->getValue());
         $field->select('foo');
@@ -338,28 +338,28 @@ public function testOptionWithNoValue()
 
     public function testDisableValidation()
     {
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => false));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => false]);
         $field = new ChoiceFormField($node);
         $field->disableValidation();
         $field->setValue('foobar');
         $this->assertEquals('foobar', $field->getValue(), '->disableValidation() allows to set a value which is not in the selected options.');
 
-        $node = $this->createSelectNode(array('foo' => false, 'bar' => false), array('multiple' => 'multiple'));
+        $node = $this->createSelectNode(['foo' => false, 'bar' => false], ['multiple' => 'multiple']);
         $field = new ChoiceFormField($node);
         $field->disableValidation();
-        $field->setValue(array('foobar'));
-        $this->assertEquals(array('foobar'), $field->getValue(), '->disableValidation() allows to set a value which is not in the selected options.');
+        $field->setValue(['foobar']);
+        $this->assertEquals(['foobar'], $field->getValue(), '->disableValidation() allows to set a value which is not in the selected options.');
     }
 
     public function testSelectWithEmptyValue()
     {
-        $node = $this->createSelectNodeWithEmptyOption(array('' => true, 'Female' => false, 'Male' => false));
+        $node = $this->createSelectNodeWithEmptyOption(['' => true, 'Female' => false, 'Male' => false]);
         $field = new ChoiceFormField($node);
 
         $this->assertSame('', $field->getValue());
     }
 
-    protected function createSelectNode($options, $attributes = array(), $selectedAttrText = 'selected')
+    protected function createSelectNode($options, $attributes = [], $selectedAttrText = 'selected')
     {
         $document = new \DOMDocument();
         $node = $document->createElement('select');
@@ -381,7 +381,7 @@ protected function createSelectNode($options, $attributes = array(), $selectedAt
         return $node;
     }
 
-    protected function createSelectNodeWithEmptyOption($options, $attributes = array())
+    protected function createSelectNodeWithEmptyOption($options, $attributes = [])
     {
         $document = new \DOMDocument();
         $node = $document->createElement('select');
diff --git a/src/Symfony/Component/DomCrawler/Tests/Field/FileFormFieldTest.php b/src/Symfony/Component/DomCrawler/Tests/Field/FileFormFieldTest.php
index 3ce49a46ef73..03ab383cbbaf 100644
--- a/src/Symfony/Component/DomCrawler/Tests/Field/FileFormFieldTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/Field/FileFormFieldTest.php
@@ -17,10 +17,10 @@ class FileFormFieldTest extends FormFieldTestCase
 {
     public function testInitialize()
     {
-        $node = $this->createNode('input', '', array('type' => 'file'));
+        $node = $this->createNode('input', '', ['type' => 'file']);
         $field = new FileFormField($node);
 
-        $this->assertEquals(array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => UPLOAD_ERR_NO_FILE, 'size' => 0), $field->getValue(), '->initialize() sets the value of the field to no file uploaded');
+        $this->assertEquals(['name' => '', 'type' => '', 'tmp_name' => '', 'error' => UPLOAD_ERR_NO_FILE, 'size' => 0], $field->getValue(), '->initialize() sets the value of the field to no file uploaded');
 
         $node = $this->createNode('textarea', '');
         try {
@@ -30,7 +30,7 @@ public function testInitialize()
             $this->assertTrue(true, '->initialize() throws a \LogicException if the node is not an input field');
         }
 
-        $node = $this->createNode('input', '', array('type' => 'text'));
+        $node = $this->createNode('input', '', ['type' => 'text']);
         try {
             $field = new FileFormField($node);
             $this->fail('->initialize() throws a \LogicException if the node is not a file input field');
@@ -44,11 +44,11 @@ public function testInitialize()
      */
     public function testSetValue($method)
     {
-        $node = $this->createNode('input', '', array('type' => 'file'));
+        $node = $this->createNode('input', '', ['type' => 'file']);
         $field = new FileFormField($node);
 
         $field->$method(null);
-        $this->assertEquals(array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => UPLOAD_ERR_NO_FILE, 'size' => 0), $field->getValue(), "->$method() clears the uploaded file if the value is null");
+        $this->assertEquals(['name' => '', 'type' => '', 'tmp_name' => '', 'error' => UPLOAD_ERR_NO_FILE, 'size' => 0], $field->getValue(), "->$method() clears the uploaded file if the value is null");
 
         $field->$method(__FILE__);
         $value = $field->getValue();
@@ -80,15 +80,15 @@ public function testSetValue($method)
 
     public function getSetValueMethods()
     {
-        return array(
-            array('setValue'),
-            array('upload'),
-        );
+        return [
+            ['setValue'],
+            ['upload'],
+        ];
     }
 
     public function testSetErrorCode()
     {
-        $node = $this->createNode('input', '', array('type' => 'file'));
+        $node = $this->createNode('input', '', ['type' => 'file']);
         $field = new FileFormField($node);
 
         $field->setErrorCode(UPLOAD_ERR_FORM_SIZE);
@@ -105,7 +105,7 @@ public function testSetErrorCode()
 
     public function testSetRawFilePath()
     {
-        $node = $this->createNode('input', '', array('type' => 'file'));
+        $node = $this->createNode('input', '', ['type' => 'file']);
         $field = new FileFormField($node);
         $field->setFilePath(__FILE__);
 
diff --git a/src/Symfony/Component/DomCrawler/Tests/Field/FormFieldTest.php b/src/Symfony/Component/DomCrawler/Tests/Field/FormFieldTest.php
index d150eb3ac73b..e2daa0398716 100644
--- a/src/Symfony/Component/DomCrawler/Tests/Field/FormFieldTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/Field/FormFieldTest.php
@@ -17,7 +17,7 @@ class FormFieldTest extends FormFieldTestCase
 {
     public function testGetName()
     {
-        $node = $this->createNode('input', '', array('type' => 'text', 'name' => 'name', 'value' => 'value'));
+        $node = $this->createNode('input', '', ['type' => 'text', 'name' => 'name', 'value' => 'value']);
         $field = new InputFormField($node);
 
         $this->assertEquals('name', $field->getName(), '->getName() returns the name of the field');
@@ -25,7 +25,7 @@ public function testGetName()
 
     public function testGetSetHasValue()
     {
-        $node = $this->createNode('input', '', array('type' => 'text', 'name' => 'name', 'value' => 'value'));
+        $node = $this->createNode('input', '', ['type' => 'text', 'name' => 'name', 'value' => 'value']);
         $field = new InputFormField($node);
 
         $this->assertEquals('value', $field->getValue(), '->getValue() returns the value of the field');
diff --git a/src/Symfony/Component/DomCrawler/Tests/Field/FormFieldTestCase.php b/src/Symfony/Component/DomCrawler/Tests/Field/FormFieldTestCase.php
index 2059d049c1d0..5ca19d95416f 100644
--- a/src/Symfony/Component/DomCrawler/Tests/Field/FormFieldTestCase.php
+++ b/src/Symfony/Component/DomCrawler/Tests/Field/FormFieldTestCase.php
@@ -15,7 +15,7 @@
 
 class FormFieldTestCase extends TestCase
 {
-    protected function createNode($tag, $value, $attributes = array())
+    protected function createNode($tag, $value, $attributes = [])
     {
         $document = new \DOMDocument();
         $node = $document->createElement($tag, $value);
diff --git a/src/Symfony/Component/DomCrawler/Tests/Field/InputFormFieldTest.php b/src/Symfony/Component/DomCrawler/Tests/Field/InputFormFieldTest.php
index 193d301de691..5758f1b7bb3f 100644
--- a/src/Symfony/Component/DomCrawler/Tests/Field/InputFormFieldTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/Field/InputFormFieldTest.php
@@ -17,7 +17,7 @@ class InputFormFieldTest extends FormFieldTestCase
 {
     public function testInitialize()
     {
-        $node = $this->createNode('input', '', array('type' => 'text', 'name' => 'name', 'value' => 'value'));
+        $node = $this->createNode('input', '', ['type' => 'text', 'name' => 'name', 'value' => 'value']);
         $field = new InputFormField($node);
 
         $this->assertEquals('value', $field->getValue(), '->initialize() sets the value of the field to the value attribute value');
@@ -30,7 +30,7 @@ public function testInitialize()
             $this->assertTrue(true, '->initialize() throws a \LogicException if the node is not an input');
         }
 
-        $node = $this->createNode('input', '', array('type' => 'checkbox'));
+        $node = $this->createNode('input', '', ['type' => 'checkbox']);
         try {
             $field = new InputFormField($node);
             $this->fail('->initialize() throws a \LogicException if the node is a checkbox');
@@ -38,7 +38,7 @@ public function testInitialize()
             $this->assertTrue(true, '->initialize() throws a \LogicException if the node is a checkbox');
         }
 
-        $node = $this->createNode('input', '', array('type' => 'file'));
+        $node = $this->createNode('input', '', ['type' => 'file']);
         try {
             $field = new InputFormField($node);
             $this->fail('->initialize() throws a \LogicException if the node is a file');
diff --git a/src/Symfony/Component/DomCrawler/Tests/FormTest.php b/src/Symfony/Component/DomCrawler/Tests/FormTest.php
index f7ea51b2d0d2..2778fd075e3a 100644
--- a/src/Symfony/Component/DomCrawler/Tests/FormTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/FormTest.php
@@ -129,18 +129,18 @@ public function testConstructorHandlesFormValues()
         $form2 = new Form($buttonElements->item(0), 'http://example.com');
 
         // Tests if form values are correctly assigned to forms
-        $values1 = array(
-            'apples' => array('1', '2'),
+        $values1 = [
+            'apples' => ['1', '2'],
             'form_name' => 'form-1',
             'button_1' => 'Capture fields',
             'outer_field' => 'success',
-        );
-        $values2 = array(
-            'oranges' => array('1', '2', '3'),
+        ];
+        $values2 = [
+            'oranges' => ['1', '2', '3'],
             'form_name' => 'form_2',
             'button_2' => '',
-            'app_frontend_form_type_contact_form_type' => array('contactType' => '', 'firstName' => 'John'),
-        );
+            'app_frontend_form_type_contact_form_type' => ['contactType' => '', 'firstName' => 'John'],
+        ];
 
         $this->assertEquals($values1, $form1->getPhpValues(), 'HTML5-compliant form attribute handled incorrectly');
         $this->assertEquals($values2, $form2->getPhpValues(), 'HTML5-compliant form attribute handled incorrectly');
@@ -161,7 +161,7 @@ public function testMultiValuedFields()
 
         $this->assertEquals(
             array_keys($form->all()),
-            array('foo[2]', 'foo[3]', 'bar[foo][0]', 'bar[foo][foobar]')
+            ['foo[2]', 'foo[3]', 'bar[foo][0]', 'bar[foo][foobar]']
         );
 
         $this->assertEquals($form->get('foo[2]')->getValue(), 'foo');
@@ -175,7 +175,7 @@ public function testMultiValuedFields()
         $this->assertEquals($form->get('foo[2]')->getValue(), 'bar');
         $this->assertEquals($form->get('foo[3]')->getValue(), 'bar');
 
-        $form['bar'] = array('foo' => array('0' => 'bar', 'foobar' => 'foobar'));
+        $form['bar'] = ['foo' => ['0' => 'bar', 'foobar' => 'foobar']];
 
         $this->assertEquals($form->get('bar[foo][0]')->getValue(), 'bar');
         $this->assertEquals($form->get('bar[foo][foobar]')->getValue(), 'foobar');
@@ -193,7 +193,7 @@ public function testConstructor($message, $form, $values)
                 function ($field) {
                     $class = \get_class($field);
 
-                    return array(substr($class, strrpos($class, '\\') + 1), $field->getValue());
+                    return [substr($class, strrpos($class, '\\') + 1), $field->getValue()];
                 },
                 $form->all()
             ),
@@ -203,84 +203,84 @@ function ($field) {
 
     public function provideInitializeValues()
     {
-        return array(
-            array(
+        return [
+            [
                 'does not take into account input fields without a name attribute',
                 '<input type="text" value="foo" />
                  <input type="submit" />',
-                array(),
-            ),
-            array(
+                [],
+            ],
+            [
                 'does not take into account input fields with an empty name attribute value',
                 '<input type="text" name="" value="foo" />
                  <input type="submit" />',
-                array(),
-            ),
-            array(
+                [],
+            ],
+            [
                 'takes into account disabled input fields',
                 '<input type="text" name="foo" value="foo" disabled="disabled" />
                  <input type="submit" />',
-                array('foo' => array('InputFormField', 'foo')),
-            ),
-            array(
+                ['foo' => ['InputFormField', 'foo']],
+            ],
+            [
                 'appends the submitted button value',
                 '<input type="submit" name="bar" value="bar" />',
-                array('bar' => array('InputFormField', 'bar')),
-            ),
-            array(
+                ['bar' => ['InputFormField', 'bar']],
+            ],
+            [
                 'appends the submitted button value for Button element',
                 '<button type="submit" name="bar" value="bar">Bar</button>',
-                array('bar' => array('InputFormField', 'bar')),
-            ),
-            array(
+                ['bar' => ['InputFormField', 'bar']],
+            ],
+            [
                 'appends the submitted button value but not other submit buttons',
                 '<input type="submit" name="bar" value="bar" />
                  <input type="submit" name="foobar" value="foobar" />',
-                 array('foobar' => array('InputFormField', 'foobar')),
-            ),
-            array(
+                 ['foobar' => ['InputFormField', 'foobar']],
+            ],
+            [
                 'turns an image input into x and y fields',
                 '<input type="image" name="bar" />',
-                array('bar.x' => array('InputFormField', '0'), 'bar.y' => array('InputFormField', '0')),
-            ),
-            array(
+                ['bar.x' => ['InputFormField', '0'], 'bar.y' => ['InputFormField', '0']],
+            ],
+            [
                 'returns textareas',
                 '<textarea name="foo">foo</textarea>
                  <input type="submit" />',
-                 array('foo' => array('TextareaFormField', 'foo')),
-            ),
-            array(
+                 ['foo' => ['TextareaFormField', 'foo']],
+            ],
+            [
                 'returns inputs',
                 '<input type="text" name="foo" value="foo" />
                  <input type="submit" />',
-                 array('foo' => array('InputFormField', 'foo')),
-            ),
-            array(
+                 ['foo' => ['InputFormField', 'foo']],
+            ],
+            [
                 'returns checkboxes',
                 '<input type="checkbox" name="foo" value="foo" checked="checked" />
                  <input type="submit" />',
-                 array('foo' => array('ChoiceFormField', 'foo')),
-            ),
-            array(
+                 ['foo' => ['ChoiceFormField', 'foo']],
+            ],
+            [
                 'returns not-checked checkboxes',
                 '<input type="checkbox" name="foo" value="foo" />
                  <input type="submit" />',
-                 array('foo' => array('ChoiceFormField', false)),
-            ),
-            array(
+                 ['foo' => ['ChoiceFormField', false]],
+            ],
+            [
                 'returns radio buttons',
                 '<input type="radio" name="foo" value="foo" />
                  <input type="radio" name="foo" value="bar" checked="bar" />
                  <input type="submit" />',
-                 array('foo' => array('ChoiceFormField', 'bar')),
-            ),
-            array(
+                 ['foo' => ['ChoiceFormField', 'bar']],
+            ],
+            [
                 'returns file inputs',
                 '<input type="file" name="foo" />
                  <input type="submit" />',
-                 array('foo' => array('FileFormField', array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0))),
-            ),
-        );
+                 ['foo' => ['FileFormField', ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]]],
+            ],
+        ];
     }
 
     public function testGetFormNode()
@@ -390,86 +390,86 @@ public function testOffsetExists()
     public function testGetValues()
     {
         $form = $this->createForm('<form><input type="text" name="foo[bar]" value="foo" /><input type="text" name="bar" value="bar" /><select multiple="multiple" name="baz[]"></select><input type="submit" /></form>');
-        $this->assertEquals(array('foo[bar]' => 'foo', 'bar' => 'bar', 'baz' => array()), $form->getValues(), '->getValues() returns all form field values');
+        $this->assertEquals(['foo[bar]' => 'foo', 'bar' => 'bar', 'baz' => []], $form->getValues(), '->getValues() returns all form field values');
 
         $form = $this->createForm('<form><input type="checkbox" name="foo" value="foo" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('bar' => 'bar'), $form->getValues(), '->getValues() does not include not-checked checkboxes');
+        $this->assertEquals(['bar' => 'bar'], $form->getValues(), '->getValues() does not include not-checked checkboxes');
 
         $form = $this->createForm('<form><input type="file" name="foo" value="foo" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('bar' => 'bar'), $form->getValues(), '->getValues() does not include file input fields');
+        $this->assertEquals(['bar' => 'bar'], $form->getValues(), '->getValues() does not include file input fields');
 
         $form = $this->createForm('<form><input type="text" name="foo" value="foo" disabled="disabled" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('bar' => 'bar'), $form->getValues(), '->getValues() does not include disabled fields');
+        $this->assertEquals(['bar' => 'bar'], $form->getValues(), '->getValues() does not include disabled fields');
 
         $form = $this->createForm('<form><template><input type="text" name="foo" value="foo" /></template><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('bar' => 'bar'), $form->getValues(), '->getValues() does not include template fields');
+        $this->assertEquals(['bar' => 'bar'], $form->getValues(), '->getValues() does not include template fields');
         $this->assertFalse($form->has('foo'));
     }
 
     public function testSetValues()
     {
         $form = $this->createForm('<form><input type="checkbox" name="foo" value="foo" checked="checked" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $form->setValues(array('foo' => false, 'bar' => 'foo'));
-        $this->assertEquals(array('bar' => 'foo'), $form->getValues(), '->setValues() sets the values of fields');
+        $form->setValues(['foo' => false, 'bar' => 'foo']);
+        $this->assertEquals(['bar' => 'foo'], $form->getValues(), '->setValues() sets the values of fields');
     }
 
     public function testMultiselectSetValues()
     {
         $form = $this->createForm('<form><select multiple="multiple" name="multi"><option value="foo">foo</option><option value="bar">bar</option></select><input type="submit" /></form>');
-        $form->setValues(array('multi' => array('foo', 'bar')));
-        $this->assertEquals(array('multi' => array('foo', 'bar')), $form->getValues(), '->setValue() sets the values of select');
+        $form->setValues(['multi' => ['foo', 'bar']]);
+        $this->assertEquals(['multi' => ['foo', 'bar']], $form->getValues(), '->setValue() sets the values of select');
     }
 
     public function testGetPhpValues()
     {
         $form = $this->createForm('<form><input type="text" name="foo[bar]" value="foo" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('foo' => array('bar' => 'foo'), 'bar' => 'bar'), $form->getPhpValues(), '->getPhpValues() converts keys with [] to arrays');
+        $this->assertEquals(['foo' => ['bar' => 'foo'], 'bar' => 'bar'], $form->getPhpValues(), '->getPhpValues() converts keys with [] to arrays');
 
         $form = $this->createForm('<form><input type="text" name="fo.o[ba.r]" value="foo" /><input type="text" name="ba r" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('fo.o' => array('ba.r' => 'foo'), 'ba r' => 'bar'), $form->getPhpValues(), '->getPhpValues() preserves periods and spaces in names');
+        $this->assertEquals(['fo.o' => ['ba.r' => 'foo'], 'ba r' => 'bar'], $form->getPhpValues(), '->getPhpValues() preserves periods and spaces in names');
 
         $form = $this->createForm('<form><input type="text" name="fo.o[ba.r][]" value="foo" /><input type="text" name="fo.o[ba.r][ba.z]" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('fo.o' => array('ba.r' => array('foo', 'ba.z' => 'bar'))), $form->getPhpValues(), '->getPhpValues() preserves periods and spaces in names recursively');
+        $this->assertEquals(['fo.o' => ['ba.r' => ['foo', 'ba.z' => 'bar']]], $form->getPhpValues(), '->getPhpValues() preserves periods and spaces in names recursively');
 
         $form = $this->createForm('<form><input type="text" name="foo[bar]" value="foo" /><input type="text" name="bar" value="bar" /><select multiple="multiple" name="baz[]"></select><input type="submit" /></form>');
-        $this->assertEquals(array('foo' => array('bar' => 'foo'), 'bar' => 'bar'), $form->getPhpValues(), "->getPhpValues() doesn't return empty values");
+        $this->assertEquals(['foo' => ['bar' => 'foo'], 'bar' => 'bar'], $form->getPhpValues(), "->getPhpValues() doesn't return empty values");
     }
 
     public function testGetFiles()
     {
         $form = $this->createForm('<form><input type="file" name="foo[bar]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array(), $form->getFiles(), '->getFiles() returns an empty array if method is get');
+        $this->assertEquals([], $form->getFiles(), '->getFiles() returns an empty array if method is get');
 
         $form = $this->createForm('<form method="post"><input type="file" name="foo[bar]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('foo[bar]' => array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0)), $form->getFiles(), '->getFiles() only returns file fields for POST');
+        $this->assertEquals(['foo[bar]' => ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]], $form->getFiles(), '->getFiles() only returns file fields for POST');
 
         $form = $this->createForm('<form method="post"><input type="file" name="foo[bar]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>', 'put');
-        $this->assertEquals(array('foo[bar]' => array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0)), $form->getFiles(), '->getFiles() only returns file fields for PUT');
+        $this->assertEquals(['foo[bar]' => ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]], $form->getFiles(), '->getFiles() only returns file fields for PUT');
 
         $form = $this->createForm('<form method="post"><input type="file" name="foo[bar]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>', 'delete');
-        $this->assertEquals(array('foo[bar]' => array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0)), $form->getFiles(), '->getFiles() only returns file fields for DELETE');
+        $this->assertEquals(['foo[bar]' => ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]], $form->getFiles(), '->getFiles() only returns file fields for DELETE');
 
         $form = $this->createForm('<form method="post"><input type="file" name="foo[bar]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>', 'patch');
-        $this->assertEquals(array('foo[bar]' => array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0)), $form->getFiles(), '->getFiles() only returns file fields for PATCH');
+        $this->assertEquals(['foo[bar]' => ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]], $form->getFiles(), '->getFiles() only returns file fields for PATCH');
 
         $form = $this->createForm('<form method="post"><input type="file" name="foo[bar]" disabled="disabled" /><input type="submit" /></form>');
-        $this->assertEquals(array(), $form->getFiles(), '->getFiles() does not include disabled file fields');
+        $this->assertEquals([], $form->getFiles(), '->getFiles() does not include disabled file fields');
 
         $form = $this->createForm('<form method="post"><template><input type="file" name="foo"/></template><input type="text" name="bar" value="bar"/><input type="submit"/></form>');
-        $this->assertEquals(array(), $form->getFiles(), '->getFiles() does not include template file fields');
+        $this->assertEquals([], $form->getFiles(), '->getFiles() does not include template file fields');
         $this->assertFalse($form->has('foo'));
     }
 
     public function testGetPhpFiles()
     {
         $form = $this->createForm('<form method="post"><input type="file" name="foo[bar]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('foo' => array('bar' => array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0))), $form->getPhpFiles(), '->getPhpFiles() converts keys with [] to arrays');
+        $this->assertEquals(['foo' => ['bar' => ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]]], $form->getPhpFiles(), '->getPhpFiles() converts keys with [] to arrays');
 
         $form = $this->createForm('<form method="post"><input type="file" name="f.o o[bar]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('f.o o' => array('bar' => array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0))), $form->getPhpFiles(), '->getPhpFiles() preserves periods and spaces in names');
+        $this->assertEquals(['f.o o' => ['bar' => ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]]], $form->getPhpFiles(), '->getPhpFiles() preserves periods and spaces in names');
 
         $form = $this->createForm('<form method="post"><input type="file" name="f.o o[bar][ba.z]" /><input type="file" name="f.o o[bar][]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
-        $this->assertEquals(array('f.o o' => array('bar' => array('ba.z' => array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0), array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0)))), $form->getPhpFiles(), '->getPhpFiles() preserves periods and spaces in names recursively');
+        $this->assertEquals(['f.o o' => ['bar' => ['ba.z' => ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0], ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]]]], $form->getPhpFiles(), '->getPhpFiles() preserves periods and spaces in names recursively');
 
         $form = $this->createForm('<form method="post"><input type="file" name="foo[bar]" /><input type="text" name="bar" value="bar" /><input type="submit" /></form>');
         $files = $form->getPhpFiles();
@@ -478,7 +478,7 @@ public function testGetPhpFiles()
         $this->assertSame(4, $files['foo']['bar']['error'], '->getPhpFiles() converts error to int');
 
         $form = $this->createForm('<form method="post"><input type="file" name="size[error]" /><input type="text" name="error" value="error" /><input type="submit" /></form>');
-        $this->assertEquals(array('size' => array('error' => array('name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0))), $form->getPhpFiles(), '->getPhpFiles() int conversion does not collide with file names');
+        $this->assertEquals(['size' => ['error' => ['name' => '', 'type' => '', 'tmp_name' => '', 'error' => 4, 'size' => 0]]], $form->getPhpFiles(), '->getPhpFiles() int conversion does not collide with file names');
     }
 
     /**
@@ -559,83 +559,83 @@ public function testGetUriWithActionOverride()
 
     public function provideGetUriValues()
     {
-        return array(
-            array(
+        return [
+            [
                 'returns the URI of the form',
                 '<form action="/foo"><input type="submit" /></form>',
-                array(),
+                [],
                 '/foo',
-            ),
-            array(
+            ],
+            [
                 'appends the form values if the method is get',
                 '<form action="/foo"><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/foo?foo=foo',
-            ),
-            array(
+            ],
+            [
                 'appends the form values and merges the submitted values',
                 '<form action="/foo"><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array('foo' => 'bar'),
+                ['foo' => 'bar'],
                 '/foo?foo=bar',
-            ),
-            array(
+            ],
+            [
                 'does not append values if the method is post',
                 '<form action="/foo" method="post"><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/foo',
-            ),
-            array(
+            ],
+            [
                 'does not append values if the method is patch',
                 '<form action="/foo" method="post"><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/foo',
                 'PUT',
-            ),
-            array(
+            ],
+            [
                 'does not append values if the method is delete',
                 '<form action="/foo" method="post"><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/foo',
                 'DELETE',
-            ),
-            array(
+            ],
+            [
                 'does not append values if the method is put',
                 '<form action="/foo" method="post"><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/foo',
                 'PATCH',
-            ),
-            array(
+            ],
+            [
                 'appends the form values to an existing query string',
                 '<form action="/foo?bar=bar"><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/foo?bar=bar&foo=foo',
-            ),
-            array(
+            ],
+            [
                 'replaces query values with the form values',
                 '<form action="/foo?bar=bar"><input type="text" name="bar" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/foo?bar=foo',
-            ),
-            array(
+            ],
+            [
                 'returns an empty URI if the action is empty',
                 '<form><input type="submit" /></form>',
-                array(),
+                [],
                 '/',
-            ),
-            array(
+            ],
+            [
                 'appends the form values even if the action is empty',
                 '<form><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/?foo=foo',
-            ),
-            array(
+            ],
+            [
                 'chooses the path if the action attribute value is a sharp (#)',
                 '<form action="#" method="post"><input type="text" name="foo" value="foo" /><input type="submit" /></form>',
-                array(),
+                [],
                 '/#',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testHas()
@@ -761,7 +761,7 @@ public function testFormRegistrySupportsMultivaluedFields()
         $registry->add($this->getFormFieldMock('bar[baz]'));
 
         $this->assertEquals(
-            array('foo[0]', 'foo[1]', 'bar[5]', 'bar[6]', 'bar[baz]'),
+            ['foo[0]', 'foo[1]', 'bar[5]', 'bar[6]', 'bar[baz]'],
             array_keys($registry->all())
         );
     }
@@ -795,13 +795,13 @@ public function testFormRegistrySetValues()
         $registry->set('foo[3]', 3);
         $registry->set('foo[bar][baz]', 'fbb');
 
-        $registry->set('foo', array(
+        $registry->set('foo', [
             2 => 2,
             3 => 3,
-            'bar' => array(
+            'bar' => [
                 'baz' => 'fbb',
-             ),
-        ));
+             ],
+        ]);
     }
 
     /**
@@ -825,7 +825,7 @@ public function testFormRegistrySetArrayOnNotCompoundField()
         $registry = new FormFieldRegistry();
         $registry->add($this->getFormFieldMock('bar'));
 
-        $registry->set('bar', array('baz'));
+        $registry->set('bar', ['baz']);
     }
 
     public function testDifferentFieldTypesWithSameName()
@@ -854,7 +854,7 @@ protected function getFormFieldMock($name, $value = null)
     {
         $field = $this
             ->getMockBuilder('Symfony\\Component\\DomCrawler\\Field\\FormField')
-            ->setMethods(array('getName', 'getValue', 'setValue', 'initialize'))
+            ->setMethods(['getName', 'getValue', 'setValue', 'initialize'])
             ->disableOriginalConstructor()
             ->getMock()
         ;
@@ -965,6 +965,6 @@ public function testgetPhpValuesWithEmptyTextarea()
 
         $nodes = $dom->getElementsByTagName('form');
         $form = new Form($nodes->item(0), 'http://example.com');
-        $this->assertEquals($form->getPhpValues(), array('example' => ''));
+        $this->assertEquals($form->getPhpValues(), ['example' => '']);
     }
 }
diff --git a/src/Symfony/Component/DomCrawler/Tests/ImageTest.php b/src/Symfony/Component/DomCrawler/Tests/ImageTest.php
index 309578a90233..7f9c71924f7e 100644
--- a/src/Symfony/Component/DomCrawler/Tests/ImageTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/ImageTest.php
@@ -41,9 +41,9 @@ public function testGetUri($url, $currentUri, $expected)
 
     public function getGetUriTests()
     {
-        return array(
-            array('/foo.png', 'http://localhost/bar/foo/', 'http://localhost/foo.png'),
-            array('foo.png', 'http://localhost/bar/foo/', 'http://localhost/bar/foo/foo.png'),
-        );
+        return [
+            ['/foo.png', 'http://localhost/bar/foo/', 'http://localhost/foo.png'],
+            ['foo.png', 'http://localhost/bar/foo/', 'http://localhost/bar/foo/foo.png'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DomCrawler/Tests/LinkTest.php b/src/Symfony/Component/DomCrawler/Tests/LinkTest.php
index 3f0364705f98..3cbcdbd62b57 100644
--- a/src/Symfony/Component/DomCrawler/Tests/LinkTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/LinkTest.php
@@ -101,61 +101,61 @@ public function testGetUriOnLink($url, $currentUri, $expected)
 
     public function getGetUriTests()
     {
-        return array(
-            array('/foo', 'http://localhost/bar/foo/', 'http://localhost/foo'),
-            array('/foo', 'http://localhost/bar/foo', 'http://localhost/foo'),
-            array('
-            /foo', 'http://localhost/bar/foo/', 'http://localhost/foo'),
-            array('/foo
-            ', 'http://localhost/bar/foo', 'http://localhost/foo'),
-
-            array('foo', 'http://localhost/bar/foo/', 'http://localhost/bar/foo/foo'),
-            array('foo', 'http://localhost/bar/foo', 'http://localhost/bar/foo'),
-
-            array('', 'http://localhost/bar/', 'http://localhost/bar/'),
-            array('#', 'http://localhost/bar/', 'http://localhost/bar/#'),
-            array('#bar', 'http://localhost/bar?a=b', 'http://localhost/bar?a=b#bar'),
-            array('#bar', 'http://localhost/bar/#foo', 'http://localhost/bar/#bar'),
-            array('?a=b', 'http://localhost/bar#foo', 'http://localhost/bar?a=b'),
-            array('?a=b', 'http://localhost/bar/', 'http://localhost/bar/?a=b'),
-
-            array('http://login.foo.com/foo', 'http://localhost/bar/', 'http://login.foo.com/foo'),
-            array('https://login.foo.com/foo', 'https://localhost/bar/', 'https://login.foo.com/foo'),
-            array('mailto:foo@bar.com', 'http://localhost/foo', 'mailto:foo@bar.com'),
+        return [
+            ['/foo', 'http://localhost/bar/foo/', 'http://localhost/foo'],
+            ['/foo', 'http://localhost/bar/foo', 'http://localhost/foo'],
+            ['
+            /foo', 'http://localhost/bar/foo/', 'http://localhost/foo'],
+            ['/foo
+            ', 'http://localhost/bar/foo', 'http://localhost/foo'],
+
+            ['foo', 'http://localhost/bar/foo/', 'http://localhost/bar/foo/foo'],
+            ['foo', 'http://localhost/bar/foo', 'http://localhost/bar/foo'],
+
+            ['', 'http://localhost/bar/', 'http://localhost/bar/'],
+            ['#', 'http://localhost/bar/', 'http://localhost/bar/#'],
+            ['#bar', 'http://localhost/bar?a=b', 'http://localhost/bar?a=b#bar'],
+            ['#bar', 'http://localhost/bar/#foo', 'http://localhost/bar/#bar'],
+            ['?a=b', 'http://localhost/bar#foo', 'http://localhost/bar?a=b'],
+            ['?a=b', 'http://localhost/bar/', 'http://localhost/bar/?a=b'],
+
+            ['http://login.foo.com/foo', 'http://localhost/bar/', 'http://login.foo.com/foo'],
+            ['https://login.foo.com/foo', 'https://localhost/bar/', 'https://login.foo.com/foo'],
+            ['mailto:foo@bar.com', 'http://localhost/foo', 'mailto:foo@bar.com'],
 
             // tests schema relative URL (issue #7169)
-            array('//login.foo.com/foo', 'http://localhost/bar/', 'http://login.foo.com/foo'),
-            array('//login.foo.com/foo', 'https://localhost/bar/', 'https://login.foo.com/foo'),
-
-            array('?foo=2', 'http://localhost?foo=1', 'http://localhost?foo=2'),
-            array('?foo=2', 'http://localhost/?foo=1', 'http://localhost/?foo=2'),
-            array('?foo=2', 'http://localhost/bar?foo=1', 'http://localhost/bar?foo=2'),
-            array('?foo=2', 'http://localhost/bar/?foo=1', 'http://localhost/bar/?foo=2'),
-            array('?bar=2', 'http://localhost?foo=1', 'http://localhost?bar=2'),
-
-            array('foo', 'http://login.foo.com/bar/baz?/query/string', 'http://login.foo.com/bar/foo'),
-
-            array('.', 'http://localhost/foo/bar/baz', 'http://localhost/foo/bar/'),
-            array('./', 'http://localhost/foo/bar/baz', 'http://localhost/foo/bar/'),
-            array('./foo', 'http://localhost/foo/bar/baz', 'http://localhost/foo/bar/foo'),
-            array('..', 'http://localhost/foo/bar/baz', 'http://localhost/foo/'),
-            array('../', 'http://localhost/foo/bar/baz', 'http://localhost/foo/'),
-            array('../foo', 'http://localhost/foo/bar/baz', 'http://localhost/foo/foo'),
-            array('../..', 'http://localhost/foo/bar/baz', 'http://localhost/'),
-            array('../../', 'http://localhost/foo/bar/baz', 'http://localhost/'),
-            array('../../foo', 'http://localhost/foo/bar/baz', 'http://localhost/foo'),
-            array('../../foo', 'http://localhost/bar/foo/', 'http://localhost/foo'),
-            array('../bar/../../foo', 'http://localhost/bar/foo/', 'http://localhost/foo'),
-            array('../bar/./../../foo', 'http://localhost/bar/foo/', 'http://localhost/foo'),
-            array('../../', 'http://localhost/', 'http://localhost/'),
-            array('../../', 'http://localhost', 'http://localhost/'),
-
-            array('/foo', 'http://localhost?bar=1', 'http://localhost/foo'),
-            array('/foo', 'http://localhost#bar', 'http://localhost/foo'),
-            array('/foo', 'file:///', 'file:///foo'),
-            array('/foo', 'file:///bar/baz', 'file:///foo'),
-            array('foo', 'file:///', 'file:///foo'),
-            array('foo', 'file:///bar/baz', 'file:///bar/foo'),
-        );
+            ['//login.foo.com/foo', 'http://localhost/bar/', 'http://login.foo.com/foo'],
+            ['//login.foo.com/foo', 'https://localhost/bar/', 'https://login.foo.com/foo'],
+
+            ['?foo=2', 'http://localhost?foo=1', 'http://localhost?foo=2'],
+            ['?foo=2', 'http://localhost/?foo=1', 'http://localhost/?foo=2'],
+            ['?foo=2', 'http://localhost/bar?foo=1', 'http://localhost/bar?foo=2'],
+            ['?foo=2', 'http://localhost/bar/?foo=1', 'http://localhost/bar/?foo=2'],
+            ['?bar=2', 'http://localhost?foo=1', 'http://localhost?bar=2'],
+
+            ['foo', 'http://login.foo.com/bar/baz?/query/string', 'http://login.foo.com/bar/foo'],
+
+            ['.', 'http://localhost/foo/bar/baz', 'http://localhost/foo/bar/'],
+            ['./', 'http://localhost/foo/bar/baz', 'http://localhost/foo/bar/'],
+            ['./foo', 'http://localhost/foo/bar/baz', 'http://localhost/foo/bar/foo'],
+            ['..', 'http://localhost/foo/bar/baz', 'http://localhost/foo/'],
+            ['../', 'http://localhost/foo/bar/baz', 'http://localhost/foo/'],
+            ['../foo', 'http://localhost/foo/bar/baz', 'http://localhost/foo/foo'],
+            ['../..', 'http://localhost/foo/bar/baz', 'http://localhost/'],
+            ['../../', 'http://localhost/foo/bar/baz', 'http://localhost/'],
+            ['../../foo', 'http://localhost/foo/bar/baz', 'http://localhost/foo'],
+            ['../../foo', 'http://localhost/bar/foo/', 'http://localhost/foo'],
+            ['../bar/../../foo', 'http://localhost/bar/foo/', 'http://localhost/foo'],
+            ['../bar/./../../foo', 'http://localhost/bar/foo/', 'http://localhost/foo'],
+            ['../../', 'http://localhost/', 'http://localhost/'],
+            ['../../', 'http://localhost', 'http://localhost/'],
+
+            ['/foo', 'http://localhost?bar=1', 'http://localhost/foo'],
+            ['/foo', 'http://localhost#bar', 'http://localhost/foo'],
+            ['/foo', 'file:///', 'file:///foo'],
+            ['/foo', 'file:///bar/baz', 'file:///foo'],
+            ['foo', 'file:///', 'file:///foo'],
+            ['foo', 'file:///bar/baz', 'file:///bar/foo'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Dotenv/Dotenv.php b/src/Symfony/Component/Dotenv/Dotenv.php
index e5f5cd7e236b..7b17513ab147 100644
--- a/src/Symfony/Component/Dotenv/Dotenv.php
+++ b/src/Symfony/Component/Dotenv/Dotenv.php
@@ -107,12 +107,12 @@ public function populate($values)
     public function parse($data, $path = '.env')
     {
         $this->path = $path;
-        $this->data = str_replace(array("\r\n", "\r"), "\n", $data);
+        $this->data = str_replace(["\r\n", "\r"], "\n", $data);
         $this->lineno = 1;
         $this->cursor = 0;
         $this->end = \strlen($this->data);
         $this->state = self::STATE_VARNAME;
-        $this->values = array();
+        $this->values = [];
         $name = '';
 
         $this->skipEmptyLines();
@@ -138,7 +138,7 @@ public function parse($data, $path = '.env')
         try {
             return $this->values;
         } finally {
-            $this->values = array();
+            $this->values = [];
             $this->data = null;
             $this->path = null;
         }
@@ -224,7 +224,7 @@ private function lexValue()
                     throw $this->createFormatException('Missing quote to end the value');
                 }
                 ++$this->cursor;
-                $value = str_replace(array('\\"', '\r', '\n'), array('"', "\r", "\n"), $value);
+                $value = str_replace(['\\"', '\r', '\n'], ['"', "\r", "\n"], $value);
                 $resolvedValue = $value;
                 $resolvedValue = $this->resolveVariables($resolvedValue);
                 $resolvedValue = $this->resolveCommands($resolvedValue);
@@ -233,7 +233,7 @@ private function lexValue()
             } else {
                 $value = '';
                 $prevChr = $this->data[$this->cursor - 1];
-                while ($this->cursor < $this->end && !\in_array($this->data[$this->cursor], array("\n", '"', "'"), true) && !((' ' === $prevChr || "\t" === $prevChr) && '#' === $this->data[$this->cursor])) {
+                while ($this->cursor < $this->end && !\in_array($this->data[$this->cursor], ["\n", '"', "'"], true) && !((' ' === $prevChr || "\t" === $prevChr) && '#' === $this->data[$this->cursor])) {
                     if ('\\' === $this->data[$this->cursor] && isset($this->data[$this->cursor + 1]) && ('"' === $this->data[$this->cursor + 1] || "'" === $this->data[$this->cursor + 1])) {
                         ++$this->cursor;
                     }
diff --git a/src/Symfony/Component/Dotenv/Tests/DotenvTest.php b/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
index 332c20527b0d..fabe643a014b 100644
--- a/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
+++ b/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
@@ -34,18 +34,18 @@ public function testParseWithFormatError($data, $error)
 
     public function getEnvDataWithFormatErrors()
     {
-        $tests = array(
-            array('FOO=BAR BAZ', "A value containing spaces must be surrounded by quotes in \".env\" at line 1.\n...FOO=BAR BAZ...\n             ^ line 1 offset 11"),
-            array('FOO BAR=BAR', "Whitespace are not supported after the variable name in \".env\" at line 1.\n...FOO BAR=BAR...\n     ^ line 1 offset 3"),
-            array('FOO', "Missing = in the environment variable declaration in \".env\" at line 1.\n...FOO...\n     ^ line 1 offset 3"),
-            array('FOO="foo', "Missing quote to end the value in \".env\" at line 1.\n...FOO=\"foo...\n          ^ line 1 offset 8"),
-            array('FOO=\'foo', "Missing quote to end the value in \".env\" at line 1.\n...FOO='foo...\n          ^ line 1 offset 8"),
-            array('export FOO', "Unable to unset an environment variable in \".env\" at line 1.\n...export FOO...\n            ^ line 1 offset 10"),
-            array('FOO=${FOO', "Unclosed braces on variable expansion in \".env\" at line 1.\n...FOO=\${FOO...\n           ^ line 1 offset 9"),
-        );
+        $tests = [
+            ['FOO=BAR BAZ', "A value containing spaces must be surrounded by quotes in \".env\" at line 1.\n...FOO=BAR BAZ...\n             ^ line 1 offset 11"],
+            ['FOO BAR=BAR', "Whitespace are not supported after the variable name in \".env\" at line 1.\n...FOO BAR=BAR...\n     ^ line 1 offset 3"],
+            ['FOO', "Missing = in the environment variable declaration in \".env\" at line 1.\n...FOO...\n     ^ line 1 offset 3"],
+            ['FOO="foo', "Missing quote to end the value in \".env\" at line 1.\n...FOO=\"foo...\n          ^ line 1 offset 8"],
+            ['FOO=\'foo', "Missing quote to end the value in \".env\" at line 1.\n...FOO='foo...\n          ^ line 1 offset 8"],
+            ['export FOO', "Unable to unset an environment variable in \".env\" at line 1.\n...export FOO...\n            ^ line 1 offset 10"],
+            ['FOO=${FOO', "Unclosed braces on variable expansion in \".env\" at line 1.\n...FOO=\${FOO...\n           ^ line 1 offset 9"],
+        ];
 
         if ('\\' !== \DIRECTORY_SEPARATOR) {
-            $tests[] = array('FOO=$((1dd2))', "Issue expanding a command (%s\n) in \".env\" at line 1.\n...FOO=$((1dd2))...\n               ^ line 1 offset 13");
+            $tests[] = ['FOO=$((1dd2))', "Issue expanding a command (%s\n) in \".env\" at line 1.\n...FOO=$((1dd2))...\n               ^ line 1 offset 13"];
         }
 
         return $tests;
@@ -65,104 +65,104 @@ public function getEnvData()
         putenv('LOCAL=local');
         $_ENV['REMOTE'] = 'remote';
 
-        $tests = array(
+        $tests = [
             // backslashes
-            array('FOO=foo\\\\bar', array('FOO' => 'foo\\bar')),
-            array("FOO='foo\\\\bar'", array('FOO' => 'foo\\\\bar')),
-            array('FOO="foo\\\\bar"', array('FOO' => 'foo\\bar')),
+            ['FOO=foo\\\\bar', ['FOO' => 'foo\\bar']],
+            ["FOO='foo\\\\bar'", ['FOO' => 'foo\\\\bar']],
+            ['FOO="foo\\\\bar"', ['FOO' => 'foo\\bar']],
 
             // escaped backslash in front of variable
-            array("BAR=bar\nFOO=foo\\\\\$BAR", array('BAR' => 'bar', 'FOO' => 'foo\\bar')),
-            array("BAR=bar\nFOO='foo\\\\\$BAR'", array('BAR' => 'bar', 'FOO' => 'foo\\\\$BAR')),
-            array("BAR=bar\nFOO=\"foo\\\\\$BAR\"", array('BAR' => 'bar', 'FOO' => 'foo\\bar')),
+            ["BAR=bar\nFOO=foo\\\\\$BAR", ['BAR' => 'bar', 'FOO' => 'foo\\bar']],
+            ["BAR=bar\nFOO='foo\\\\\$BAR'", ['BAR' => 'bar', 'FOO' => 'foo\\\\$BAR']],
+            ["BAR=bar\nFOO=\"foo\\\\\$BAR\"", ['BAR' => 'bar', 'FOO' => 'foo\\bar']],
 
-            array('FOO=foo\\\\\\$BAR', array('FOO' => 'foo\\$BAR')),
-            array('FOO=\'foo\\\\\\$BAR\'', array('FOO' => 'foo\\\\\\$BAR')),
-            array('FOO="foo\\\\\\$BAR"', array('FOO' => 'foo\\$BAR')),
+            ['FOO=foo\\\\\\$BAR', ['FOO' => 'foo\\$BAR']],
+            ['FOO=\'foo\\\\\\$BAR\'', ['FOO' => 'foo\\\\\\$BAR']],
+            ['FOO="foo\\\\\\$BAR"', ['FOO' => 'foo\\$BAR']],
 
             // spaces
-            array('FOO=bar', array('FOO' => 'bar')),
-            array(' FOO=bar ', array('FOO' => 'bar')),
-            array('FOO=', array('FOO' => '')),
-            array("FOO=\n\n\nBAR=bar", array('FOO' => '', 'BAR' => 'bar')),
-            array('FOO=  ', array('FOO' => '')),
-            array("FOO=\nBAR=bar", array('FOO' => '', 'BAR' => 'bar')),
+            ['FOO=bar', ['FOO' => 'bar']],
+            [' FOO=bar ', ['FOO' => 'bar']],
+            ['FOO=', ['FOO' => '']],
+            ["FOO=\n\n\nBAR=bar", ['FOO' => '', 'BAR' => 'bar']],
+            ['FOO=  ', ['FOO' => '']],
+            ["FOO=\nBAR=bar", ['FOO' => '', 'BAR' => 'bar']],
 
             // newlines
-            array("\n\nFOO=bar\r\n\n", array('FOO' => 'bar')),
-            array("FOO=bar\r\nBAR=foo", array('FOO' => 'bar', 'BAR' => 'foo')),
-            array("FOO=bar\rBAR=foo", array('FOO' => 'bar', 'BAR' => 'foo')),
-            array("FOO=bar\nBAR=foo", array('FOO' => 'bar', 'BAR' => 'foo')),
+            ["\n\nFOO=bar\r\n\n", ['FOO' => 'bar']],
+            ["FOO=bar\r\nBAR=foo", ['FOO' => 'bar', 'BAR' => 'foo']],
+            ["FOO=bar\rBAR=foo", ['FOO' => 'bar', 'BAR' => 'foo']],
+            ["FOO=bar\nBAR=foo", ['FOO' => 'bar', 'BAR' => 'foo']],
 
             // quotes
-            array("FOO=\"bar\"\n", array('FOO' => 'bar')),
-            array("FOO=\"bar'foo\"\n", array('FOO' => 'bar\'foo')),
-            array("FOO='bar'\n", array('FOO' => 'bar')),
-            array("FOO='bar\"foo'\n", array('FOO' => 'bar"foo')),
-            array("FOO=\"bar\\\"foo\"\n", array('FOO' => 'bar"foo')),
-            array('FOO="bar\nfoo"', array('FOO' => "bar\nfoo")),
-            array('FOO="bar\rfoo"', array('FOO' => "bar\rfoo")),
-            array('FOO=\'bar\nfoo\'', array('FOO' => 'bar\nfoo')),
-            array('FOO=\'bar\rfoo\'', array('FOO' => 'bar\rfoo')),
-            array('FOO=" FOO "', array('FOO' => ' FOO ')),
-            array('FOO="  "', array('FOO' => '  ')),
-            array('PATH="c:\\\\"', array('PATH' => 'c:\\')),
-            array("FOO=\"bar\nfoo\"", array('FOO' => "bar\nfoo")),
-            array('FOO=BAR\\"', array('FOO' => 'BAR"')),
-            array("FOO=BAR\\'BAZ", array('FOO' => "BAR'BAZ")),
-            array('FOO=\\"BAR', array('FOO' => '"BAR')),
+            ["FOO=\"bar\"\n", ['FOO' => 'bar']],
+            ["FOO=\"bar'foo\"\n", ['FOO' => 'bar\'foo']],
+            ["FOO='bar'\n", ['FOO' => 'bar']],
+            ["FOO='bar\"foo'\n", ['FOO' => 'bar"foo']],
+            ["FOO=\"bar\\\"foo\"\n", ['FOO' => 'bar"foo']],
+            ['FOO="bar\nfoo"', ['FOO' => "bar\nfoo"]],
+            ['FOO="bar\rfoo"', ['FOO' => "bar\rfoo"]],
+            ['FOO=\'bar\nfoo\'', ['FOO' => 'bar\nfoo']],
+            ['FOO=\'bar\rfoo\'', ['FOO' => 'bar\rfoo']],
+            ['FOO=" FOO "', ['FOO' => ' FOO ']],
+            ['FOO="  "', ['FOO' => '  ']],
+            ['PATH="c:\\\\"', ['PATH' => 'c:\\']],
+            ["FOO=\"bar\nfoo\"", ['FOO' => "bar\nfoo"]],
+            ['FOO=BAR\\"', ['FOO' => 'BAR"']],
+            ["FOO=BAR\\'BAZ", ['FOO' => "BAR'BAZ"]],
+            ['FOO=\\"BAR', ['FOO' => '"BAR']],
 
             // concatenated values
-            array("FOO='bar''foo'\n", array('FOO' => 'barfoo')),
-            array("FOO='bar '' baz'", array('FOO' => 'bar  baz')),
-            array("FOO=bar\nBAR='baz'\"\$FOO\"", array('FOO' => 'bar', 'BAR' => 'bazbar')),
-            array("FOO='bar '\\'' baz'", array('FOO' => "bar ' baz")),
+            ["FOO='bar''foo'\n", ['FOO' => 'barfoo']],
+            ["FOO='bar '' baz'", ['FOO' => 'bar  baz']],
+            ["FOO=bar\nBAR='baz'\"\$FOO\"", ['FOO' => 'bar', 'BAR' => 'bazbar']],
+            ["FOO='bar '\\'' baz'", ['FOO' => "bar ' baz"]],
 
             // comments
-            array("#FOO=bar\nBAR=foo", array('BAR' => 'foo')),
-            array("#FOO=bar # Comment\nBAR=foo", array('BAR' => 'foo')),
-            array("FOO='bar foo' # Comment", array('FOO' => 'bar foo')),
-            array("FOO='bar#foo' # Comment", array('FOO' => 'bar#foo')),
-            array("# Comment\r\nFOO=bar\n# Comment\nBAR=foo", array('FOO' => 'bar', 'BAR' => 'foo')),
-            array("FOO=bar # Another comment\nBAR=foo", array('FOO' => 'bar', 'BAR' => 'foo')),
-            array("FOO=\n\n# comment\nBAR=bar", array('FOO' => '', 'BAR' => 'bar')),
-            array('FOO=NOT#COMMENT', array('FOO' => 'NOT#COMMENT')),
-            array('FOO=  # Comment', array('FOO' => '')),
+            ["#FOO=bar\nBAR=foo", ['BAR' => 'foo']],
+            ["#FOO=bar # Comment\nBAR=foo", ['BAR' => 'foo']],
+            ["FOO='bar foo' # Comment", ['FOO' => 'bar foo']],
+            ["FOO='bar#foo' # Comment", ['FOO' => 'bar#foo']],
+            ["# Comment\r\nFOO=bar\n# Comment\nBAR=foo", ['FOO' => 'bar', 'BAR' => 'foo']],
+            ["FOO=bar # Another comment\nBAR=foo", ['FOO' => 'bar', 'BAR' => 'foo']],
+            ["FOO=\n\n# comment\nBAR=bar", ['FOO' => '', 'BAR' => 'bar']],
+            ['FOO=NOT#COMMENT', ['FOO' => 'NOT#COMMENT']],
+            ['FOO=  # Comment', ['FOO' => '']],
 
             // edge cases (no conversions, only strings as values)
-            array('FOO=0', array('FOO' => '0')),
-            array('FOO=false', array('FOO' => 'false')),
-            array('FOO=null', array('FOO' => 'null')),
+            ['FOO=0', ['FOO' => '0']],
+            ['FOO=false', ['FOO' => 'false']],
+            ['FOO=null', ['FOO' => 'null']],
 
             // export
-            array('export FOO=bar', array('FOO' => 'bar')),
-            array('  export   FOO=bar', array('FOO' => 'bar')),
+            ['export FOO=bar', ['FOO' => 'bar']],
+            ['  export   FOO=bar', ['FOO' => 'bar']],
 
             // variable expansion
-            array("FOO=BAR\nBAR=\$FOO", array('FOO' => 'BAR', 'BAR' => 'BAR')),
-            array("FOO=BAR\nBAR=\"\$FOO\"", array('FOO' => 'BAR', 'BAR' => 'BAR')),
-            array("FOO=BAR\nBAR='\$FOO'", array('FOO' => 'BAR', 'BAR' => '$FOO')),
-            array("FOO_BAR9=BAR\nBAR=\$FOO_BAR9", array('FOO_BAR9' => 'BAR', 'BAR' => 'BAR')),
-            array("FOO=BAR\nBAR=\${FOO}Z", array('FOO' => 'BAR', 'BAR' => 'BARZ')),
-            array("FOO=BAR\nBAR=\$FOO}", array('FOO' => 'BAR', 'BAR' => 'BAR}')),
-            array("FOO=BAR\nBAR=\\\$FOO", array('FOO' => 'BAR', 'BAR' => '$FOO')),
-            array('FOO=" \\$ "', array('FOO' => ' $ ')),
-            array('FOO=" $ "', array('FOO' => ' $ ')),
-            array('BAR=$LOCAL', array('BAR' => 'local')),
-            array('BAR=$REMOTE', array('BAR' => 'remote')),
-            array('FOO=$NOTDEFINED', array('FOO' => '')),
-        );
+            ["FOO=BAR\nBAR=\$FOO", ['FOO' => 'BAR', 'BAR' => 'BAR']],
+            ["FOO=BAR\nBAR=\"\$FOO\"", ['FOO' => 'BAR', 'BAR' => 'BAR']],
+            ["FOO=BAR\nBAR='\$FOO'", ['FOO' => 'BAR', 'BAR' => '$FOO']],
+            ["FOO_BAR9=BAR\nBAR=\$FOO_BAR9", ['FOO_BAR9' => 'BAR', 'BAR' => 'BAR']],
+            ["FOO=BAR\nBAR=\${FOO}Z", ['FOO' => 'BAR', 'BAR' => 'BARZ']],
+            ["FOO=BAR\nBAR=\$FOO}", ['FOO' => 'BAR', 'BAR' => 'BAR}']],
+            ["FOO=BAR\nBAR=\\\$FOO", ['FOO' => 'BAR', 'BAR' => '$FOO']],
+            ['FOO=" \\$ "', ['FOO' => ' $ ']],
+            ['FOO=" $ "', ['FOO' => ' $ ']],
+            ['BAR=$LOCAL', ['BAR' => 'local']],
+            ['BAR=$REMOTE', ['BAR' => 'remote']],
+            ['FOO=$NOTDEFINED', ['FOO' => '']],
+        ]
10000
;
 
         if ('\\' !== \DIRECTORY_SEPARATOR) {
-            $tests = array_merge($tests, array(
+            $tests = array_merge($tests, [
                 // command expansion
-                array('FOO=$(echo foo)', array('FOO' => 'foo')),
-                array('FOO=$((1+2))', array('FOO' => '3')),
-                array('FOO=FOO$((1+2))BAR', array('FOO' => 'FOO3BAR')),
-                array('FOO=$(echo "$(echo "$(echo "$(echo foo)")")")', array('FOO' => 'foo')),
-                array("FOO=$(echo \"Quotes won't be a problem\")", array('FOO' => 'Quotes won\'t be a problem')),
-                array("FOO=bar\nBAR=$(echo \"FOO is \$FOO\")", array('FOO' => 'bar', 'BAR' => 'FOO is bar')),
-            ));
+                ['FOO=$(echo foo)', ['FOO' => 'foo']],
+                ['FOO=$((1+2))', ['FOO' => '3']],
+                ['FOO=FOO$((1+2))BAR', ['FOO' => 'FOO3BAR']],
+                ['FOO=$(echo "$(echo "$(echo "$(echo foo)")")")', ['FOO' => 'foo']],
+                ["FOO=$(echo \"Quotes won't be a problem\")", ['FOO' => 'Quotes won\'t be a problem']],
+                ["FOO=bar\nBAR=$(echo \"FOO is \$FOO\")", ['FOO' => 'bar', 'BAR' => 'FOO is bar']],
+            ]);
         }
 
         return $tests;
@@ -214,7 +214,7 @@ public function testServerSuperglobalIsNotOverriden()
         $originalValue = $_SERVER['argc'];
 
         $dotenv = new Dotenv();
-        $dotenv->populate(array('argc' => 'new_value'));
+        $dotenv->populate(['argc' => 'new_value']);
 
         $this->assertSame($originalValue, $_SERVER['argc']);
     }
@@ -225,7 +225,7 @@ public function testEnvVarIsNotOverriden()
         $_SERVER['TEST_ENV_VAR'] = 'original_value';
 
         $dotenv = new Dotenv();
-        $dotenv->populate(array('TEST_ENV_VAR' => 'new_value'));
+        $dotenv->populate(['TEST_ENV_VAR' => 'new_value']);
 
         $this->assertSame('original_value', getenv('TEST_ENV_VAR'));
     }
@@ -235,7 +235,7 @@ public function testHttpVarIsPartiallyOverriden()
         $_SERVER['HTTP_TEST_ENV_VAR'] = 'http_value';
 
         $dotenv = new Dotenv();
-        $dotenv->populate(array('HTTP_TEST_ENV_VAR' => 'env_value'));
+        $dotenv->populate(['HTTP_TEST_ENV_VAR' => 'env_value']);
 
         $this->assertSame('env_value', getenv('HTTP_TEST_ENV_VAR'));
         $this->assertSame('env_value', $_ENV['HTTP_TEST_ENV_VAR']);
@@ -257,7 +257,7 @@ public function testMemorizingLoadedVarsNamesInSpecialVar()
         putenv('DATABASE_URL');
 
         $dotenv = new Dotenv();
-        $dotenv->populate(array('APP_DEBUG' => '1', 'DATABASE_URL' => 'mysql://root@localhost/db'));
+        $dotenv->populate(['APP_DEBUG' => '1', 'DATABASE_URL' => 'mysql://root@localhost/db']);
 
         $this->assertSame('APP_DEBUG,DATABASE_URL', getenv('SYMFONY_DOTENV_VARS'));
 
@@ -274,8 +274,8 @@ public function testMemorizingLoadedVarsNamesInSpecialVar()
         putenv('DATABASE_URL');
 
         $dotenv = new Dotenv();
-        $dotenv->populate(array('APP_DEBUG' => '0', 'DATABASE_URL' => 'mysql://root@localhost/db'));
-        $dotenv->populate(array('DATABASE_URL' => 'sqlite:///somedb.sqlite'));
+        $dotenv->populate(['APP_DEBUG' => '0', 'DATABASE_URL' => 'mysql://root@localhost/db']);
+        $dotenv->populate(['DATABASE_URL' => 'sqlite:///somedb.sqlite']);
 
         $this->assertSame('APP_ENV,DATABASE_URL', getenv('SYMFONY_DOTENV_VARS'));
     }
@@ -290,7 +290,7 @@ public function testOverridingEnvVarsWithNamesMemorizedInSpecialVar()
         putenv('DOCUMENT_ROOT=/var/www');
 
         $dotenv = new Dotenv();
-        $dotenv->populate(array('FOO' => 'foo1', 'BAR' => 'bar1', 'BAZ' => 'baz1', 'DOCUMENT_ROOT' => '/boot'));
+        $dotenv->populate(['FOO' => 'foo1', 'BAR' => 'bar1', 'BAZ' => 'baz1', 'DOCUMENT_ROOT' => '/boot']);
 
         $this->assertSame('foo1', getenv('FOO'));
         $this->assertSame('bar1', getenv('BAR'));
diff --git a/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php b/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
index cd44a31c1dad..14f17277e6db 100644
--- a/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
+++ b/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
@@ -30,12 +30,12 @@ class ContainerAwareEventDispatcher extends EventDispatcher
     /**
      * The service IDs of the event listeners and subscribers.
      */
-    private $listenerIds = array();
+    private $listenerIds = [];
 
     /**
      * The services registered as listeners.
      */
-    private $listeners = array();
+    private $listeners = [];
 
     public function __construct(ContainerInterface $container)
     {
@@ -70,7 +70,7 @@ public function addListenerService($eventName, $callback, $priority = 0)
             throw new \InvalidArgumentException('Expected an array("service", "method") argument');
         }
 
-        $this->listenerIds[$eventName][] = array($callback[0], $callback[1], $priority);
+        $this->listenerIds[$eventName][] = [$callback[0], $callback[1], $priority];
     }
 
     public function removeListener($eventName, $listener)
@@ -80,7 +80,7 @@ public function removeListener($eventName, $listener)
         if (isset($this->listenerIds[$eventName])) {
             foreach ($this->listenerIds[$eventName] as $i => list($serviceId, $method)) {
                 $key = $serviceId.'.'.$method;
-                if (isset($this->listeners[$eventName][$key]) && $listener === array($this->listeners[$eventName][$key], $method)) {
+                if (isset($this->listeners[$eventName][$key]) && $listener === [$this->listeners[$eventName][$key], $method]) {
                     unset($this->listeners[$eventName][$key]);
                     if (empty($this->listeners[$eventName])) {
                         unset($this->listeners[$eventName]);
@@ -150,12 +150,12 @@ public function addSubscriberService($serviceId, $class)
 
         foreach ($class::getSubscribedEvents() as $eventName => $params) {
             if (\is_string($params)) {
-                $this->listenerIds[$eventName][] = array($serviceId, $params, 0);
+                $this->listenerIds[$eventName][] = [$serviceId, $params, 0];
             } elseif (\is_string($params[0])) {
-                $this->listenerIds[$eventName][] = array($serviceId, $params[0], isset($params[1]) ? $params[1] : 0);
+                $this->listenerIds[$eventName][] = [$serviceId, $params[0], isset($params[1]) ? $params[1] : 0];
             } else {
                 foreach ($params as $listener) {
-                    $this->listenerIds[$eventName][] = array($serviceId, $listener[0], isset($listener[1]) ? $listener[1] : 0);
+                    $this->listenerIds[$eventName][] = [$serviceId, $listener[0], isset($listener[1]) ? $listener[1] : 0];
                 }
             }
         }
@@ -184,10 +184,10 @@ protected function lazyLoad($eventName)
 
                 $key = $serviceId.'.'.$method;
                 if (!isset($this->listeners[$eventName][$key])) {
-                    $this->addListener($eventName, array($listener, $method), $priority);
+                    $this->addListener($eventName, [$listener, $method], $priority);
                 } elseif ($this->listeners[$eventName][$key] !== $listener) {
-                    parent::removeListener($eventName, array($this->listeners[$eventName][$key], $method));
-                    $this->addListener($eventName, array($listener, $method), $priority);
+                    parent::removeListener($eventName, [$this->listeners[$eventName][$key], $method]);
+                    $this->addListener($eventName, [$listener, $method], $priority);
                 }
 
                 $this->listeners[$eventName][$key] = $listener;
diff --git a/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php b/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
index 4cf0a66d1ec4..2339a68874a6 100644
--- a/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
+++ b/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
@@ -38,7 +38,7 @@ public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $sto
         $this->dispatcher = $dispatcher;
         $this->stopwatch = $stopwatch;
         $this->logger = $logger;
-        $this->wrappedListeners = array();
+        $this->wrappedListeners = [];
     }
 
     /**
@@ -162,10 +162,10 @@ public function dispatch($eventName, Event $event = null)
     public function getCalledListeners()
     {
         if (null === $this->callStack) {
-            return array();
+            return [];
         }
 
-        $called = array();
+        $called = [];
         foreach ($this->callStack as $listener) {
             list($eventName) = $this->callStack->getInfo();
 
@@ -184,14 +184,14 @@ public function getNotCalledListeners()
             $allListeners = $this->getListeners();
         } catch (\Exception $e) {
             if (null !== $this->logger) {
-                $this->logger->info('An exception was thrown while getting the uncalled listeners.', array('exception' => $e));
+                $this->logger->info('An exception was thrown while getting the uncalled listeners.', ['exception' => $e]);
             }
 
             // unable to retrieve the uncalled listeners
-            return array();
+            return [];
         }
 
-        $notCalled = array();
+        $notCalled = [];
         foreach ($allListeners as $eventName => $listeners) {
             foreach ($listeners as $listener) {
                 $called = false;
@@ -214,7 +214,7 @@ public function getNotCalledListeners()
             }
         }
 
-        uasort($notCalled, array($this, 'sortNotCalledListeners'));
+        uasort($notCalled, [$this, 'sortNotCalledListeners']);
 
         return $notCalled;
     }
@@ -234,7 +234,7 @@ public function reset()
      */
     public function __call($method, $arguments)
     {
-        return \call_user_func_array(array($this->dispatcher, $method), $arguments);
+        return \call_user_func_array([$this->dispatcher, $method], $arguments);
     }
 
     /**
@@ -265,7 +265,7 @@ private function preProcess($eventName)
             $this->wrappedListeners[$eventName][] = $wrappedListener;
             $this->dispatcher->removeListener($eventName, $listener);
             $this->dispatcher->addListener($eventName, $wrappedListener, $priority);
-            $this->callStack->attach($wrappedListener, array($eventName));
+            $this->callStack->attach($wrappedListener, [$eventName]);
         }
     }
 
@@ -283,7 +283,7 @@ private function postProcess($eventName)
             $this->dispatcher->addListener($eventName, $listener->getWrappedListener(), $priority);
 
             if (null !== $this->logger) {
-                $context = array('event' => $eventName, 'listener' => $listener->getPretty());
+                $context = ['event' => $eventName, 'listener' => $listener->getPretty()];
             }
 
             if ($listener->wasCalled()) {
diff --git a/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php b/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
index d49f69de7250..c90ac927b2c8 100644
--- a/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
+++ b/src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
@@ -94,12 +94,12 @@ public function getInfo($eventName)
             $this->stub = self::$hasClassStub ? new ClassStub($this->pretty.'()', $this->listener) : $this->pretty.'()';
         }
 
-        return array(
+        return [
             'event' => $eventName,
             'priority' => null !== $this->dispatcher ? $this->dispatcher->getListenerPriority($eventName, $this->listener) : null,
             'pretty' => $this->pretty,
             'stub' => $this->stub,
-        );
+        ];
     }
 
     public function __invoke(Event $event, $eventName, EventDispatcherInterface $dispatcher)
diff --git a/src/Symfony/Component/EventDispatcher/DependencyInjection/RegisterListenersPass.php b/src/Symfony/Component/EventDispatcher/DependencyInjection/RegisterListenersPass.php
index a6fcde33ad97..bdad9fe9d9bd 100644
--- a/src/Symfony/Component/EventDispatcher/DependencyInjection/RegisterListenersPass.php
+++ b/src/Symfony/Component/EventDispatcher/DependencyInjection/RegisterListenersPass.php
@@ -28,7 +28,7 @@ class RegisterListenersPass implements CompilerPassInterface
     protected $listenerTag;
     protected $subscriberTag;
 
-    private $hotPathEvents = array();
+    private $hotPathEvents = [];
     private $hotPathTagName;
 
     /**
@@ -68,14 +68,14 @@ public function process(ContainerBuilder $container)
                 }
 
                 if (!isset($event['method'])) {
-                    $event['method'] = 'on'.preg_replace_callback(array(
+                    $event['method'] = 'on'.preg_replace_callback([
                         '/(?<=\b)[a-z]/i',
                         '/[^a-z0-9]/i',
-                    ), function ($matches) { return strtoupper($matches[0]); }, $event['event']);
+                    ], function ($matches) { return strtoupper($matches[0]); }, $event['event']);
                     $event['method'] = preg_replace('/[^a-z0-9]/i', '', $event['method']);
                 }
 
-                $definition->addMethodCall('addListener', array($event['event'], array(new ServiceClosureArgument(new Reference($id)), $event['method']), $priority));
+                $definition->addMethodCall('addListener', [$event['event'], [new ServiceClosureArgument(new Reference($id)), $event['method']], $priority]);
 
                 if (isset($this->hotPathEvents[$event['event']])) {
                     $container->getDefinition($id)->addTag($this->hotPathTagName);
@@ -102,14 +102,14 @@ public function process(ContainerBuilder $container)
             ExtractingEventDispatcher::$subscriber = $class;
             $extractingDispatcher->addSubscriber($extractingDispatcher);
             foreach ($extractingDispatcher->listeners as $args) {
-                $args[1] = array(new ServiceClosureArgument(new Reference($id)), $args[1]);
+                $args[1] = [new ServiceClosureArgument(new Reference($id)), $args[1]];
                 $definition->addMethodCall('addListener', $args);
 
                 if (isset($this->hotPathEvents[$args[0]])) {
                     $container->getDefinition($id)->addTag('container.hot_path');
                 }
             }
-            $extractingDispatcher->listeners = array();
+            $extractingDispatcher->listeners = [];
         }
     }
 }
@@ -119,18 +119,18 @@ public function process(ContainerBuilder $container)
  */
 class ExtractingEventDispatcher extends EventDispatcher implements EventSubscriberInterface
 {
-    public $listeners = array();
+    public $listeners = [];
 
     public static $subscriber;
 
     public function addListener($eventName, $listener, $priority = 0)
     {
-        $this->listeners[] = array($eventName, $listener[1], $priority);
+        $this->listeners[] = [$eventName, $listener[1], $priority];
     }
 
     public static function getSubscribedEvents()
     {
-        $callback = array(self::$subscriber, 'getSubscribedEvents');
+        $callback = [self::$subscriber, 'getSubscribedEvents'];
 
         return $callback();
     }
diff --git a/src/Symfony/Component/EventDispatcher/EventDispatcher.php b/src/Symfony/Component/EventDispatcher/EventDispatcher.php
index 4e75c63e4faf..968e345b3dca 100644
--- a/src/Symfony/Component/EventDispatcher/EventDispatcher.php
+++ b/src/Symfony/Component/EventDispatcher/EventDispatcher.php
@@ -28,8 +28,8 @@
  */
 class EventDispatcher implements EventDispatcherInterface
 {
-    private $listeners = array();
-    private $sorted = array();
+    private $listeners = [];
+    private $sorted = [];
 
     /**
      * {@inheritdoc}
@@ -54,7 +54,7 @@ public function getListeners($eventName = null)
     {
         if (null !== $eventName) {
             if (empty($this->listeners[$eventName])) {
-                return array();
+                return [];
             }
 
             if (!isset($this->sorted[$eventName])) {
@@ -166,12 +166,12 @@ public function addSubscriber(EventSubscriberInterface $subscriber)
     {
         foreach ($subscriber->getSubscribedEvents() as $eventName => $params) {
             if (\is_string($params)) {
-                $this->addListener($eventName, array($subscriber, $params));
+                $this->addListener($eventName, [$subscriber, $params]);
             } elseif (\is_string($params[0])) {
-                $this->addListener($eventName, array($subscriber, $params[0]), isset($params[1]) ? $params[1] : 0);
+                $this->addListener($eventName, [$subscriber, $params[0]], isset($params[1]) ? $params[1] : 0);
             } else {
                 foreach ($params as $listener) {
-                    $this->addListener($eventName, array($subscriber, $listener[0]), isset($listener[1]) ? $listener[1] : 0);
+                    $this->addListener($eventName, [$subscriber, $listener[0]], isset($listener[1]) ? $listener[1] : 0);
                 }
             }
         }
@@ -185,10 +185,10 @@ public function removeSubscriber(EventSubscriberInterface $subscriber)
         foreach ($subscriber->getSubscribedEvents() as $eventName => $params) {
             if (\is_array($params) && \is_array($params[0])) {
                 foreach ($params as $listener) {
-                    $this->removeListener($eventName, array($subscriber, $listener[0]));
+                    $this->removeListener($eventName, [$subscriber, $listener[0]]);
                 }
             } else {
-                $this->removeListener($eventName, array($subscriber, \is_string($params) ? $params : $params[0]));
+                $this->removeListener($eventName, [$subscriber, \is_string($params) ? $params : $params[0]]);
             }
         }
     }
@@ -221,7 +221,7 @@ protected function doDispatch($listeners, $eventName, Event $event)
     private function sortListeners($eventName)
     {
         krsort($this->listeners[$eventName]);
-        $this->sorted[$eventName] = array();
+        $this->sorted[$eventName] = [];
 
         foreach ($this->listeners[$eventName] as $priority => $listeners) {
             foreach ($listeners as $k => $listener) {
diff --git a/src/Symfony/Component/EventDispatcher/GenericEvent.php b/src/Symfony/Component/EventDispatcher/GenericEvent.php
index f0be7e18ff3c..a9a0a5dfa59c 100644
--- a/src/Symfony/Component/EventDispatcher/GenericEvent.php
+++ b/src/Symfony/Component/EventDispatcher/GenericEvent.php
@@ -29,7 +29,7 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
      * @param mixed $subject   The subject of the event, usually an object or a callable
      * @param array $arguments Arguments to store in the event
      */
-    public function __construct($subject = null, array $arguments = array())
+    public function __construct($subject = null, array $arguments = [])
     {
         $this->subject = $subject;
         $this->arguments = $arguments;
@@ -95,7 +95,7 @@ public function getArguments()
      *
      * @return $this
      */
-    public function setArguments(array $args = array())
+    public function setArguments(array $args = [])
     {
         $this->arguments = $args;
 
diff --git a/src/Symfony/Component/EventDispatcher/Tests/AbstractEventDispatcherTest.php b/src/Symfony/Component/EventDispatcher/Tests/AbstractEventDispatcherTest.php
index 6d377d11fe30..b157659dc084 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/AbstractEventDispatcherTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/AbstractEventDispatcherTest.php
@@ -47,15 +47,15 @@ abstract protected function createEventDispatcher();
 
     public function testInitialState()
     {
-        $this->assertEquals(array(), $this->dispatcher->getListeners());
+        $this->assertEquals([], $this->dispatcher->getListeners());
         $this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
         $this->assertFalse($this->dispatcher->hasListeners(self::postFoo));
     }
 
     public function testAddListener()
     {
-        $this->dispatcher->addListener('pre.foo', array($this->listener, 'preFoo'));
-        $this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'));
+        $this->dispatcher->addListener('pre.foo', [$this->listener, 'preFoo']);
+        $this->dispatcher->addListener('post.foo', [$this->listener, 'postFoo']);
         $this->assertTrue($this->dispatcher->hasListeners());
         $this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
         $this->assertTrue($this->dispatcher->hasListeners(self::postFoo));
@@ -73,15 +73,15 @@ public function testGetListenersSortsByPriority()
         $listener2->name = '2';
         $listener3->name = '3';
 
-        $this->dispatcher->addListener('pre.foo', array($listener1, 'preFoo'), -10);
-        $this->dispatcher->addListener('pre.foo', array($listener2, 'preFoo'), 10);
-        $this->dispatcher->addListener('pre.foo', array($listener3, 'preFoo'));
+        $this->dispatcher->addListener('pre.foo', [$listener1, 'preFoo'], -10);
+        $this->dispatcher->addListener('pre.foo', [$listener2, 'preFoo'], 10);
+        $this->dispatcher->addListener('pre.foo', [$listener3, 'preFoo']);
 
-        $expected = array(
-            array($listener2, 'preFoo'),
-            array($listener3, 'preFoo'),
-            array($listener1, 'preFoo'),
-        );
+        $expected = [
+            [$listener2, 'preFoo'],
+            [$listener3, 'preFoo'],
+            [$listener1, 'preFoo'],
+        ];
 
         $this->assertSame($expected, $this->dispatcher->getListeners('pre.foo'));
     }
@@ -102,10 +102,10 @@ public function testGetAllListenersSortsByPriority()
         $this->dispatcher->addListener('post.foo', $listener5);
         $this->dispatcher->addListener('post.foo', $listener6, 10);
 
-        $expected = array(
-            'pre.foo' => array($listener3, $listener2, $listener1),
-            'post.foo' => array($listener6, $listener5, $listener4),
-        );
+        $expected = [
+            'pre.foo' => [$listener3, $listener2, $listener1],
+            'post.foo' => [$listener6, $listener5, $listener4],
+        ];
 
         $this->assertSame($expected, $this->dispatcher->getListeners());
     }
@@ -126,8 +126,8 @@ public function testGetListenerPriority()
 
     public function testDispatch()
     {
-        $this->dispatcher->addListener('pre.foo', array($this->listener, 'preFoo'));
-        $this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'));
+        $this->dispatcher->addListener('pre.foo', [$this->listener, 'preFoo']);
+        $this->dispatcher->addListener('post.foo', [$this->listener, 'postFoo']);
         $this->dispatcher->dispatch(self::preFoo);
         $this->assertTrue($this->listener->preFooInvoked);
         $this->assertFalse($this->listener->postFooInvoked);
@@ -157,8 +157,8 @@ public function testStopEventPropagation()
         // postFoo() stops the propagation, so only one listener should
         // be executed
         // Manually set priority to enforce $this->listener to be called first
-        $this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'), 10);
-        $this->dispatcher->addListener('post.foo', array($otherListener, 'postFoo'));
+        $this->dispatcher->addListener('post.foo', [$this->listener, 'postFoo'], 10);
+        $this->dispatcher->addListener('post.foo', [$otherListener, 'postFoo']);
         $this->dispatcher->dispatch(self::postFoo);
         $this->assertTrue($this->listener->postFooInvoked);
         $this->assertFalse($otherListener->postFooInvoked);
@@ -166,7 +166,7 @@ public function testStopEventPropagation()
 
     public function testDispatchByPriority()
     {
-        $invoked = array();
+        $invoked = [];
         $listener1 = function () use (&$invoked) {
             $invoked[] = '1';
         };
@@ -180,7 +180,7 @@ public function testDispatchByPriority()
         $this->dispatcher->addListener('pre.foo', $listener2);
         $this->dispatcher->addListener('pre.foo', $listener3, 10);
         $this->dispatcher->dispatch(self::preFoo);
-        $this->assertEquals(array('3', '2', '1'), $invoked);
+        $this->assertEquals(['3', '2', '1'], $invoked);
     }
 
     public function testRemoveListener()
@@ -258,7 +258,7 @@ public function testRemoveSubscriberWithMultipleListeners()
     public function testEventReceivesTheDispatcherInstanceAsArgument()
     {
         $listener = new TestWithDispatcher();
-        $this->dispatcher->addListener('test', array($listener, 'foo'));
+        $this->dispatcher->addListener('test', [$listener, 'foo']);
         $this->assertNull($listener->name);
         $this->assertNull($listener->dispatcher);
         $this->dispatcher->dispatch('test');
@@ -295,7 +295,7 @@ public function testGetListenersWhenAddedCallbackListenerIsRemoved()
         $listener = function () {};
         $this->dispatcher->addListener('foo', $listener);
         $this->dispatcher->removeListener('foo', $listener);
-        $this->assertSame(array(), $this->dispatcher->getListeners());
+        $this->assertSame([], $this->dispatcher->getListeners());
     }
 
     public function testHasListenersWithoutEventsReturnsFalseAfterHasListenersWithEventHasBeenCalled()
@@ -307,7 +307,7 @@ public function testHasListenersWithoutEventsReturnsFalseAfterHasListenersWithEv
     public function testHasListenersIsLazy()
     {
         $called = 0;
-        $listener = array(function () use (&$called) { ++$called; }, 'onFoo');
+        $listener = [function () use (&$called) { ++$called; }, 'onFoo'];
         $this->dispatcher->addListener('foo', $listener);
         $this->assertTrue($this->dispatcher->hasListeners());
         $this->assertTrue($this->dispatcher->hasListeners('foo'));
@@ -322,7 +322,7 @@ public function testDispatchLazyListener()
 
             return new TestWithDispatcher();
         };
-        $this->dispatcher->addListener('foo', array($factory, 'foo'));
+        $this->dispatcher->addListener('foo', [$factory, 'foo']);
         $this->assertSame(0, $called);
         $this->dispatcher->dispatch('foo', new Event());
         $this->dispatcher->dispatch('foo', new Event());
@@ -334,14 +334,14 @@ public function testRemoveFindsLazyListeners()
         $test = new TestWithDispatcher();
         $factory = function () use ($test) { return $test; };
 
-        $this->dispatcher->addListener('foo', array($factory, 'foo'));
+        $this->dispatcher->addListener('foo', [$factory, 'foo']);
         $this->assertTrue($this->dispatcher->hasListeners('foo'));
-        $this->dispatcher->removeListener('foo', array($test, 'foo'));
+        $this->dispatcher->removeListener('foo', [$test, 'foo']);
         $this->assertFalse($this->dispatcher->hasListeners('foo'));
 
-        $this->dispatcher->addListener('foo', array($test, 'foo'));
+        $this->dispatcher->addListener('foo', [$test, 'foo']);
         $this->assertTrue($this->dispatcher->hasListeners('foo'));
-        $this->dispatcher->removeListener('foo', array($factory, 'foo'));
+        $this->dispatcher->removeListener('foo', [$factory, 'foo']);
         $this->assertFalse($this->dispatcher->hasListeners('foo'));
     }
 
@@ -350,12 +350,12 @@ public function testPriorityFindsLazyListeners()
         $test = new TestWithDispatcher();
         $factory = function () use ($test) { return $test; };
 
-        $this->dispatcher->addListener('foo', array($factory, 'foo'), 3);
-        $this->assertSame(3, $this->dispatcher->getListenerPriority('foo', array($test, 'foo')));
-        $this->dispatcher->removeListener('foo', array($factory, 'foo'));
+        $this->dispatcher->addListener('foo', [$factory, 'foo'], 3);
+        $this->assertSame(3, $this->dispatcher->getListenerPriority('foo', [$test, 'foo']));
+        $this->dispatcher->removeListener('foo', [$factory, 'foo']);
 
-        $this->dispatcher->addListener('foo', array($test, 'foo'), 5);
-        $this->assertSame(5, $this->dispatcher->getListenerPriority('foo', array($factory, 'foo')));
+        $this->dispatcher->addListener('foo', [$test, 'foo'], 5);
+        $this->assertSame(5, $this->dispatcher->getListenerPriority('foo', [$factory, 'foo']));
     }
 
     public function testGetLazyListeners()
@@ -363,12 +363,12 @@ public function testGetLazyListeners()
         $test = new TestWithDispatcher();
         $factory = function () use ($test) { return $test; };
 
-        $this->dispatcher->addListener('foo', array($factory, 'foo'), 3);
-        $this->assertSame(array(array($test, 'foo')), $this->dispatcher->getListeners('foo'));
+        $this->dispatcher->addListener('foo', [$factory, 'foo'], 3);
+        $this->assertSame([[$test, 'foo']], $this->dispatcher->getListeners('foo'));
 
-        $this->dispatcher->removeListener('foo', array($test, 'foo'));
-        $this->dispatcher->addListener('bar', array($factory, 'foo'), 3);
-        $this->assertSame(array('bar' => array(array($test, 'foo'))), $this->dispatcher->getListeners());
+        $this->dispatcher->removeListener('foo', [$test, 'foo']);
+        $this->dispatcher->addListener('bar', [$factory, 'foo'], 3);
+        $this->assertSame(['bar' => [[$test, 'foo']]], $this->dispatcher->getListeners());
     }
 }
 
@@ -415,7 +415,7 @@ class TestEventSubscriber implements EventSubscriberInterface
 {
     public static function getSubscribedEvents()
     {
-        return array('pre.foo' => 'preFoo', 'post.foo' => 'postFoo');
+        return ['pre.foo' => 'preFoo', 'post.foo' => 'postFoo'];
     }
 }
 
@@ -423,10 +423,10 @@ class TestEventSubscriberWithPriorities implements EventSubscriberInterface
 {
     public static function getSubscribedEvents()
     {
-        return array(
-            'pre.foo' => array('preFoo', 10),
-            'post.foo' => array('postFoo'),
-        );
+        return [
+            'pre.foo' => ['preFoo', 10],
+            'post.foo' => ['postFoo'],
+        ];
     }
 }
 
@@ -434,9 +434,9 @@ class TestEventSubscriberWithMultipleListeners implements EventSubscriberInterfa
 {
     public static function getSubscribedEvents()
     {
-        return array('pre.foo' => array(
-            array('preFoo1'),
-            array('preFoo2', 10),
-        ));
+        return ['pre.foo' => [
+            ['preFoo1'],
+            ['preFoo2', 10],
+        ]];
     }
 }
diff --git a/src/Symfony/Component/EventDispatcher/Tests/ContainerAwareEventDispatcherTest.php b/src/Symfony/Component/EventDispatcher/Tests/ContainerAwareEventDispatcherTest.php
index 9d5eecc547bd..685cdfc3aa84 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/ContainerAwareEventDispatcherTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/ContainerAwareEventDispatcherTest.php
@@ -44,7 +44,7 @@ public function testAddAListenerService()
         $container->set('service.listener', $service);
 
         $dispatcher = new ContainerAwareEventDispatcher($container);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
+        $dispatcher->addListenerService('onEvent', ['service.listener', 'onEvent']);
 
         $dispatcher->dispatch('onEvent', $event);
     }
@@ -100,8 +100,8 @@ public function testPreventDuplicateListenerService()
         $container->set('service.listener', $service);
 
         $dispatcher = new ContainerAwareEventDispatcher($container);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'), 5);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'), 10);
+        $dispatcher->addListenerService('onEvent', ['service.listener', 'onEvent'], 5);
+        $dispatcher->addListenerService('onEvent', ['service.listener', 'onEvent'], 10);
 
         $dispatcher->dispatch('onEvent', $event);
     }
@@ -116,7 +116,7 @@ public function testHasListenersOnLazyLoad()
         $container->set('service.listener', $service);
 
         $dispatcher = new ContainerAwareEventDispatcher($container);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
+        $dispatcher->addListenerService('onEvent', ['service.listener', 'onEvent']);
 
         $service
             ->expects($this->once())
@@ -139,7 +139,7 @@ public function testGetListenersOnLazyLoad()
         $container->set('service.listener', $service);
 
         $dispatcher = new ContainerAwareEventDispatcher($container);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
+        $dispatcher->addListenerService('onEvent', ['service.listener', 'onEvent']);
 
         $listeners = $dispatcher->getListeners();
 
@@ -156,10 +156,10 @@ public function testRemoveAfterDispatch()
         $container->set('service.listener', $service);
 
         $dispatcher = new ContainerAwareEventDispatcher($container);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
+        $dispatcher->addListenerService('onEvent', ['service.listener', 'onEvent']);
 
         $dispatcher->dispatch('onEvent', new Event());
-        $dispatcher->removeListener('onEvent', array($container->get('service.listener'), 'onEvent'));
+        $dispatcher->removeListener('onEvent', [$container->get('service.listener'), 'onEvent']);
         $this->assertFalse($dispatcher->hasListeners('onEvent'));
     }
 
@@ -171,9 +171,9 @@ public function testRemoveBeforeDispatch()
         $container->set('service.listener', $service);
 
         $dispatcher = new ContainerAwareEventDispatcher($container);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
+        $dispatcher->addListenerService('onEvent', ['service.listener', 'onEvent']);
 
-        $dispatcher->removeListener('onEvent', array($container->get('service.listener'), 'onEvent'));
+        $dispatcher->removeListener('onEvent', [$container->get('service.listener'), 'onEvent']);
         $this->assertFalse($dispatcher->hasListeners('onEvent'));
     }
 }
@@ -189,11 +189,11 @@ class SubscriberService implements EventSubscriberInterface
 {
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             'onEvent' => 'onEvent',
-            'onEventWithPriority' => array('onEventWithPriority', 10),
-            'onEventNested' => array(array('onEventNested')),
-        );
+            'onEventWithPriority' => ['onEventWithPriority', 10],
+            'onEventNested' => [['onEventNested']],
+        ];
     }
 
     public function onEvent(Event $e)
diff --git a/src/Symfony/Component/EventDispatcher/Tests/Debug/TraceableEventDispatcherTest.php b/src/Symfony/Component/EventDispatcher/Tests/Debug/TraceableEventDispatcherTest.php
index b322d9d682c3..aabd95c0f285 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/Debug/TraceableEventDispatcherTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/Debug/TraceableEventDispatcherTest.php
@@ -98,7 +98,7 @@ public function testAddRemoveSubscriber()
         $tdispatcher->addSubscriber($subscriber);
         $listeners = $dispatcher->getListeners('foo');
         $this->assertCount(1, $listeners);
-        $this->assertSame(array($subscriber, 'call'), $listeners[0]);
+        $this->assertSame([$subscriber, 'call'], $listeners[0]);
 
         $tdispatcher->removeSubscriber($subscriber);
         $this->assertCount(0, $dispatcher->getListeners('foo'));
@@ -112,16 +112,16 @@ public function testGetCalledListeners()
         $listeners = $tdispatcher->getNotCalledListeners();
         $this->assertArrayHasKey('stub', $listeners[0]);
         unset($listeners[0]['stub']);
-        $this->assertEquals(array(), $tdispatcher->getCalledListeners());
-        $this->assertEquals(array(array('event' => 'foo', 'pretty' => 'closure', 'priority' => 5)), $listeners);
+        $this->assertEquals([], $tdispatcher->getCalledListeners());
+        $this->assertEquals([['event' => 'foo', 'pretty' => 'closure', 'priority' => 5]], $listeners);
 
         $tdispatcher->dispatch('foo');
 
         $listeners = $tdispatcher->getCalledListeners();
         $this->assertArrayHasKey('stub', $listeners[0]);
         unset($listeners[0]['stub']);
-        $this->assertEquals(array(array('event' => 'foo', 'pretty' => 'closure', 'priority' => 5)), $listeners);
-        $this->assertEquals(array(), $tdispatcher->getNotCalledListeners());
+        $this->assertEquals([['event' => 'foo', 'pretty' => 'closure', 'priority' => 5]], $listeners);
+        $this->assertEquals([], $tdispatcher->getNotCalledListeners());
     }
 
     public function testClearCalledListeners()
@@ -135,8 +135,8 @@ public function testClearCalledListeners()
         $listeners = $tdispatcher->getNotCalledListeners();
         $this->assertArrayHasKey('stub', $listeners[0]);
         unset($listeners[0]['stub']);
-        $this->assertEquals(array(), $tdispatcher->getCalledListeners());
-        $this->assertEquals(array(array('event' => 'foo', 'pretty' => 'closure', 'priority' => 5)), $listeners);
+        $this->assertEquals([], $tdispatcher->getCalledListeners());
+        $this->assertEquals([['event' => 'foo', 'pretty' => 'closure', 'priority' => 5]], $listeners);
     }
 
     public function testDispatchAfterReset()
@@ -174,8 +174,8 @@ public function testLogger()
         $tdispatcher->addListener('foo', $listener1 = function () {});
         $tdispatcher->addListener('foo', $listener2 = function () {});
 
-        $logger->expects($this->at(0))->method('debug')->with('Notified event "{event}" to listener "{listener}".', array('event' => 'foo', 'listener' => 'closure'));
-        $logger->expects($this->at(1))->method('debug')->with('Notified event "{event}" to listener "{listener}".', array('event' => 'foo', 'listener' => 'closure'));
+        $logger->expects($this->at(0))->method('debug')->with('Notified event "{event}" to listener "{listener}".', ['event' => 'foo', 'listener' => 'closure']);
+        $logger->expects($this->at(1))->method('debug')->with('Notified event "{event}" to listener "{listener}".', ['event' => 'foo', 'listener' => 'closure']);
 
         $tdispatcher->dispatch('foo');
     }
@@ -189,16 +189,16 @@ public function testLoggerWithStoppedEvent()
         $tdispatcher->addListener('foo', $listener1 = function (Event $event) { $event->stopPropagation(); });
         $tdispatcher->addListener('foo', $listener2 = function () {});
 
-        $logger->expects($this->at(0))->method('debug')->with('Notified event "{event}" to listener "{listener}".', array('event' => 'foo', 'listener' => 'closure'));
-        $logger->expects($this->at(1))->method('debug')->with('Listener "{listener}" stopped propagation of the event "{event}".', array('event' => 'foo', 'listener' => 'closure'));
-        $logger->expects($this->at(2))->method('debug')->with('Listener "{listener}" was not called for event "{event}".', array('event' => 'foo', 'listener' => 'closure'));
+        $logger->expects($this->at(0))->method('debug')->with('Notified event "{event}" to listener "{listener}".', ['event' => 'foo', 'listener' => 'closure']);
+        $logger->expects($this->at(1))->method('debug')->with('Listener "{listener}" stopped propagation of the event "{event}".', ['event' => 'foo', 'listener' => 'closure']);
+        $logger->expects($this->at(2))->method('debug')->with('Listener "{listener}" was not called for event "{event}".', ['event' => 'foo', 'listener' => 'closure']);
 
         $tdispatcher->dispatch('foo');
     }
 
     public function testDispatchCallListeners()
     {
-        $called = array();
+        $called = [];
 
         $dispatcher = new EventDispatcher();
         $tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch());
@@ -207,7 +207,7 @@ public function testDispatchCallListeners()
 
         $tdispatcher->dispatch('foo');
 
-        $this->assertSame(array('foo2', 'foo1'), $called);
+        $this->assertSame(['foo2', 'foo1'], $called);
     }
 
     public function testDispatchNested()
@@ -264,6 +264,6 @@ class EventSubscriber implements EventSubscriberInterface
 {
     public static function getSubscribedEvents()
     {
-        return array('foo' => 'call');
+        return ['foo' => 'call'];
     }
 }
diff --git a/src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php b/src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
index f743f148d2d2..258938ed9b00 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
@@ -30,18 +30,18 @@ public function testListenerDescription(callable $listener, $expected)
 
     public function provideListenersToDescribe()
     {
-        $listeners = array(
-            array(new FooListener(), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::__invoke'),
-            array(array(new FooListener(), 'listen'), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'),
-            array(array('Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic'), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic'),
-            array('var_dump', 'var_dump'),
-            array(function () {}, 'closure'),
-        );
+        $listeners = [
+            [new FooListener(), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::__invoke'],
+            [[new FooListener(), 'listen'], 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'],
+            [['Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic'], 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic'],
+            ['var_dump', 'var_dump'],
+            [function () {}, 'closure'],
+        ];
 
         if (\PHP_VERSION_ID >= 70100) {
-            $listeners[] = array(\Closure::fromCallable(array(new FooListener(), 'listen')), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen');
-            $listeners[] = array(\Closure::fromCallable(array('Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic')), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic');
-            $listeners[] = array(\Closure::fromCallable(function () {}), 'closure');
+            $listeners[] = [\Closure::fromCallable([new FooListener(), 'listen']), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'];
+            $listeners[] = [\Closure::fromCallable(['Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic']), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic'];
+            $listeners[] = [\Closure::fromCallable(function () {}), 'closure'];
         }
 
         return $listeners;
diff --git a/src/Symfony/Component/EventDispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php b/src/Symfony/Component/EventDispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
index c1b49f75b8a4..801471b47b6e 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
@@ -38,9 +38,9 @@ public function testEventSubscriberWithoutInterface()
 
     public function testValidEventSubscriber()
     {
-        $services = array(
-            'my_event_subscriber' => array(0 => array()),
-        );
+        $services = [
+            'my_event_subscriber' => [0 => []],
+        ];
 
         $builder = new ContainerBuilder();
         $eventDispatcherDefinition = $builder->register('event_dispatcher');
@@ -50,16 +50,16 @@ public function testValidEventSubscriber()
         $registerListenersPass = new RegisterListenersPass();
         $registerListenersPass->process($builder);
 
-        $expectedCalls = array(
-            array(
+        $expectedCalls = [
+            [
                 'addListener',
-                array(
+                [
                     'event',
-                    array(new ServiceClosureArgument(new Reference('my_event_subscriber')), 'onEvent'),
+                    [new ServiceClosureArgument(new Reference('my_event_subscriber')), 'onEvent'],
                     0,
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $this->assertEquals($expectedCalls, $eventDispatcherDefinition->getMethodCalls());
     }
 
@@ -70,7 +70,7 @@ public function testValidEventSubscriber()
     public function testAbstractEventListener()
     {
         $container = new ContainerBuilder();
-        $container->register('foo', 'stdClass')->setAbstract(true)->addTag('kernel.event_listener', array());
+        $container->register('foo', 'stdClass')->setAbstract(true)->addTag('kernel.event_listener', []);
         $container->register('event_dispatcher', 'stdClass');
 
         $registerListenersPass = new RegisterListenersPass();
@@ -84,7 +84,7 @@ public function testAbstractEventListener()
     public function testAbstractEventSubscriber()
     {
         $container = new ContainerBuilder();
-        $container->register('foo', 'stdClass')->setAbstract(true)->addTag('kernel.event_subscriber', array());
+        $container->register('foo', 'stdClass')->setAbstract(true)->addTag('kernel.event_subscriber', []);
         $container->register('event_dispatcher', 'stdClass');
 
         $registerListenersPass = new RegisterListenersPass();
@@ -96,23 +96,23 @@ public function testEventSubscriberResolvableClassName()
         $container = new ContainerBuilder();
 
         $container->setParameter('subscriber.class', 'Symfony\Component\EventDispatcher\Tests\DependencyInjection\SubscriberService');
-        $container->register('foo', '%subscriber.class%')->addTag('kernel.event_subscriber', array());
+        $container->register('foo', '%subscriber.class%')->addTag('kernel.event_subscriber', []);
         $container->register('event_dispatcher', 'stdClass');
 
         $registerListenersPass = new RegisterListenersPass();
         $registerListenersPass->process($container);
 
         $definition = $container->getDefinition('event_dispatcher');
-        $expectedCalls = array(
-            array(
+        $expectedCalls = [
+            [
                 'addListener',
-                array(
+                [
                     'event',
-                    array(new ServiceClosureArgument(new Reference('foo')), 'onEvent'),
+                    [new ServiceClosureArgument(new Reference('foo')), 'onEvent'],
                     0,
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $this->assertEquals($expectedCalls, $definition->getMethodCalls());
     }
 
@@ -120,10 +120,10 @@ public function testHotPathEvents()
     {
         $container = new ContainerBuilder();
 
-        $container->register('foo', SubscriberService::class)->addTag('kernel.event_subscriber', array());
+        $container->register('foo', SubscriberService::class)->addTag('kernel.event_subscriber', []);
         $container->register('event_dispatcher', 'stdClass');
 
-        (new RegisterListenersPass())->setHotPathEvents(array('event'))->process($container);
+        (new RegisterListenersPass())->setHotPathEvents(['event'])->process($container);
 
         $this->assertTrue($container->getDefinition('foo')->hasTag('container.hot_path'));
     }
@@ -135,7 +135,7 @@ public function testHotPathEvents()
     public function testEventSubscriberUnresolvableClassName()
     {
         $container = new ContainerBuilder();
-        $container->register('foo', '%subscriber.class%')->addTag('kernel.event_subscriber', array());
+        $container->register('foo', '%subscriber.class%')->addTag('kernel.event_subscriber', []);
         $container->register('event_dispatcher', 'stdClass');
 
         $registerListenersPass = new RegisterListenersPass();
@@ -147,8 +147,8 @@ class SubscriberService implements \Symfony\Component\EventDispatcher\EventSubsc
 {
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             'event' => 'onEvent',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/EventDispatcher/Tests/GenericEventTest.php b/src/Symfony/Component/EventDispatcher/Tests/GenericEventTest.php
index b63f69df1456..461f86161e06 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/GenericEventTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/GenericEventTest.php
@@ -32,7 +32,7 @@ class GenericEventTest extends TestCase
     protected function setUp()
     {
         $this->subject = new \stdClass();
-        $this->event = new GenericEvent($this->subject, array('name' => 'Event'));
+        $this->event = new GenericEvent($this->subject, ['name' => 'Event']);
     }
 
     /**
@@ -46,7 +46,7 @@ protected function tearDown()
 
     public function testConstruct()
     {
-        $this->assertEquals($this->event, new GenericEvent($this->subject, array('name' => 'Event')));
+        $this->assertEquals($this->event, new GenericEvent($this->subject, ['name' => 'Event']));
     }
 
     /**
@@ -55,20 +55,20 @@ public function testConstruct()
     public function testGetArguments()
     {
         // test getting all
-        $this->assertSame(array('name' => 'Event'), $this->event->getArguments());
+        $this->assertSame(['name' => 'Event'], $this->event->getArguments());
     }
 
     public function testSetArguments()
     {
-        $result = $this->event->setArguments(array('foo' => 'bar'));
-        $this->assertAttributeSame(array('foo' => 'bar'), 'arguments', $this->event);
+        $result = $this->event->setArguments(['foo' => 'bar']);
+        $this->assertAttributeSame(['foo' => 'bar'], 'arguments', $this->event);
         $this->assertSame($this->event, $result);
     }
 
     public function testSetArgument()
     {
         $result = $this->event->setArgument('foo2', 'bar2');
-        $this->assertAttributeSame(array('name' => 'Event', 'foo2' => 'bar2'), 'arguments', $this->event);
+        $this->assertAttributeSame(['name' => 'Event', 'foo2' => 'bar2'], 'arguments', $this->event);
         $this->assertEquals($this->event, $result);
     }
 
@@ -99,13 +99,13 @@ public function testOffsetGet()
     public function testOffsetSet()
     {
         $this->event['foo2'] = 'bar2';
-        $this->assertAttributeSame(array('name' => 'Event', 'foo2' => 'bar2'), 'arguments', $this->event);
+        $this->assertAttributeSame(['name' => 'Event', 'foo2' => 'bar2'], 'arguments', $this->event);
     }
 
     public function testOffsetUnset()
     {
         unset($this->event['name']);
-        $this->assertAttributeSame(array(), 'arguments', $this->event);
+        $this->assertAttributeSame([], 'arguments', $this->event);
     }
 
     public function testOffsetIsset()
@@ -127,10 +127,10 @@ public function testGetSubject()
 
     public function testHasIterator()
     {
-        $data = array();
+        $data = [];
         foreach ($this->event as $key => $value) {
             $data[$key] = $value;
         }
-        $this->assertEquals(array('name' => 'Event'), $data);
+        $this->assertEquals(['name' => 'Event'], $data);
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php b/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
index 20e8386f4190..b6760a55a656 100644
--- a/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
+++ b/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
@@ -28,13 +28,13 @@ class ExpressionLanguage
     private $parser;
     private $compiler;
 
-    protected $functions = array();
+    protected $functions = [];
 
     /**
      * @param CacheItemPoolInterface                $cache
      * @param ExpressionFunctionProviderInterface[] $providers
      */
-    public function __construct($cache = null, array $providers = array())
+    public function __construct($cache = null, array $providers = [])
     {
         if (null !== $cache) {
             if ($cache instanceof ParserCacheInterface) {
@@ -60,7 +60,7 @@ public function __construct($cache = null, array $providers = array())
      *
      * @return string The compiled PHP source code
      */
-    public function compile($expression, $names = array())
+    public function compile($expression, $names = [])
     {
         return $this->getCompiler()->compile($this->parse($expression, $names)->getNodes())->getSource();
     }
@@ -73,7 +73,7 @@ public function compile($expression, $names = array())
      *
      * @return mixed The result of the evaluation of the expression
      */
-    public function evaluate($expression, $values = array())
+    public function evaluate($expression, $values = [])
     {
         return $this->parse($expression, array_keys($values))->getNodes()->evaluate($this->functions, $values);
     }
@@ -93,7 +93,7 @@ public function parse($expression, $names)
         }
 
         asort($names);
-        $cacheKeyItems = array();
+        $cacheKeyItems = [];
 
         foreach ($names as $nameKey => $name) {
             $cacheKeyItems[] = \is_int($nameKey) ? $name : $nameKey.':'.$name;
@@ -129,7 +129,7 @@ public function register($name, callable $compiler, callable $evaluator)
             throw new \LogicException('Registering functions after calling evaluate(), compile() or parse() is not supported.');
         }
 
-        $this->functions[$name] = array('compiler' => $compiler, 'evaluator' => $evaluator);
+        $this->functions[$name] = ['compiler' => $compiler, 'evaluator' => $evaluator];
     }
 
     public function addFunction(ExpressionFunction $function)
diff --git a/src/Symfony/Component/ExpressionLanguage/Lexer.php b/src/Symfony/Component/ExpressionLanguage/Lexer.php
index bd54e8913a7f..48b15ffe7c23 100644
--- a/src/Symfony/Component/ExpressionLanguage/Lexer.php
+++ b/src/Symfony/Component/ExpressionLanguage/Lexer.php
@@ -29,10 +29,10 @@ class Lexer
      */
     public function tokenize($expression)
     {
-        $expression = str_replace(array("\r", "\n", "\t", "\v", "\f"), ' ', $expression);
+        $expression = str_replace(["\r", "\n", "\t", "\v", "\f"], ' ', $expression);
         $cursor = 0;
-        $tokens = array();
-        $brackets = array();
+        $tokens = [];
+        $brackets = [];
         $end = \strlen($expression);
 
         while ($cursor < $end) {
@@ -52,7 +52,7 @@ public function tokenize($expression)
                 $cursor += \strlen($match[0]);
             } elseif (false !== strpos('([{', $expression[$cursor])) {
                 // opening bracket
-                $brackets[] = array($expression[$cursor], $cursor);
+                $brackets[] = [$expression[$cursor], $cursor];
 
                 $tokens[] = new Token(Token::PUNCTUATION_TYPE, $expression[$cursor], $cursor + 1);
                 ++$cursor;
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/ArgumentsNode.php b/src/Symfony/Component/ExpressionLanguage/Node/ArgumentsNode.php
index 1c78d8054be3..e9849a448a62 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/ArgumentsNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/ArgumentsNode.php
@@ -27,7 +27,7 @@ public function compile(Compiler $compiler)
 
     public function toArray()
     {
-        $array = array();
+        $array = [];
 
         foreach ($this->getKeyValuePairs() as $pair) {
             $array[] = $pair['value'];
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/ArrayNode.php b/src/Symfony/Component/ExpressionLanguage/Node/ArrayNode.php
index e1a2f2e90479..2dd0627c6d72 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/ArrayNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/ArrayNode.php
@@ -48,7 +48,7 @@ public function compile(Compiler $compiler)
 
     public function evaluate($functions, $values)
     {
-        $result = array();
+        $result = [];
         foreach ($this->getKeyValuePairs() as $pair) {
             $result[$pair['key']->evaluate($functions, $values)] = $pair['value']->evaluate($functions, $values);
         }
@@ -58,12 +58,12 @@ public function evaluate($functions, $values)
 
     public function toArray()
     {
-        $value = array();
+        $value = [];
         foreach ($this->getKeyValuePairs() as $pair) {
             $value[$pair['key']->attributes['value']] = $pair['value'];
         }
 
-        $array = array();
+        $array = [];
 
         if ($this->isHash($value)) {
             foreach ($value as $k => $v) {
@@ -88,9 +88,9 @@ public function toArray()
 
     protected function getKeyValuePairs()
     {
-        $pairs = array();
+        $pairs = [];
         foreach (array_chunk($this->nodes, 2) as $pair) {
-            $pairs[] = array('key' => $pair[0], 'value' => $pair[1]);
+            $pairs[] = ['key' => $pair[0], 'value' => $pair[1]];
         }
 
         return $pairs;
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/BinaryNode.php b/src/Symfony/Component/ExpressionLanguage/Node/BinaryNode.php
index f1755daee44a..92378102beda 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/BinaryNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/BinaryNode.php
@@ -20,24 +20,24 @@
  */
 class BinaryNode extends Node
 {
-    private static $operators = array(
+    private static $operators = [
         '~' => '.',
         'and' => '&&',
         'or' => '||',
-    );
+    ];
 
-    private static $functions = array(
+    private static $functions = [
         '**' => 'pow',
         '..' => 'range',
         'in' => 'in_array',
         'not in' => '!in_array',
-    );
+    ];
 
     public function __construct($operator, Node $left, Node $right)
     {
         parent::__construct(
-            array('left' => $left, 'right' => $right),
-            array('operator' => $operator)
+            ['left' => $left, 'right' => $right],
+            ['operator' => $operator]
         );
     }
 
@@ -157,6 +157,6 @@ public function evaluate($functions, $values)
 
     public function toArray()
     {
-        return array('(', $this->nodes['left'], ' '.$this->attributes['operator'].' ', $this->nodes['right'], ')');
+        return ['(', $this->nodes['left'], ' '.$this->attributes['operator'].' ', $this->nodes['right'], ')'];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/ConditionalNode.php b/src/Symfony/Component/ExpressionLanguage/Node/ConditionalNode.php
index 9db0f931aae6..ca1b484bc08c 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/ConditionalNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/ConditionalNode.php
@@ -23,7 +23,7 @@ class ConditionalNode extends Node
     public function __construct(Node $expr1, Node $expr2, Node $expr3)
     {
         parent::__construct(
-            array('expr1' => $expr1, 'expr2' => $expr2, 'expr3' => $expr3)
+            ['expr1' => $expr1, 'expr2' => $expr2, 'expr3' => $expr3]
         );
     }
 
@@ -51,6 +51,6 @@ public function evaluate($functions, $values)
 
     public function toArray()
     {
-        return array('(', $this->nodes['expr1'], ' ? ', $this->nodes['expr2'], ' : ', $this->nodes['expr3'], ')');
+        return ['(', $this->nodes['expr1'], ' ? ', $this->nodes['expr2'], ' : ', $this->nodes['expr3'], ')'];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/ConstantNode.php b/src/Symfony/Component/ExpressionLanguage/Node/ConstantNode.php
index 53c3290b3a56..670e52ed4228 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/ConstantNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/ConstantNode.php
@@ -26,8 +26,8 @@ public function __construct($value, $isIdentifier = false)
     {
         $this->isIdentifier = $isIdentifier;
         parent::__construct(
-            array(),
-            array('value' => $value)
+            [],
+            ['value' => $value]
         );
     }
 
@@ -43,7 +43,7 @@ public function evaluate($functions, $values)
 
     public function toArray()
     {
-        $array = array();
+        $array = [];
         $value = $this->attributes['value'];
 
         if ($this->isIdentifier) {
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/FunctionNode.php b/src/Symfony/Component/ExpressionLanguage/Node/FunctionNode.php
index ca479b3d5cbc..90008d5d41da 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/FunctionNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/FunctionNode.php
@@ -23,14 +23,14 @@ class FunctionNode extends Node
     public function __construct($name, Node $arguments)
     {
         parent::__construct(
-            array('arguments' => $arguments),
-            array('name' => $name)
+            ['arguments' => $arguments],
+            ['name' => $name]
         );
     }
 
     public function compile(Compiler $compiler)
     {
-        $arguments = array();
+        $arguments = [];
         foreach ($this->nodes['arguments']->nodes as $node) {
             $arguments[] = $compiler->subcompile($node);
         }
@@ -42,7 +42,7 @@ public function compile(Compiler $compiler)
 
     public function evaluate($functions, $values)
     {
-        $arguments = array($values);
+        $arguments = [$values];
         foreach ($this->nodes['arguments']->nodes as $node) {
             $arguments[] = $node->evaluate($functions, $values);
         }
@@ -52,7 +52,7 @@ public function evaluate($functions, $values)
 
     public function toArray()
     {
-        $array = array();
+        $array = [];
         $array[] = $this->attributes['name'];
 
         foreach ($this->nodes['arguments']->nodes as $node) {
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/GetAttrNode.php b/src/Symfony/Component/ExpressionLanguage/Node/GetAttrNode.php
index f76ce175e8c4..1cf414aefec4 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/GetAttrNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/GetAttrNode.php
@@ -27,8 +27,8 @@ class GetAttrNode extends Node
     public function __construct(Node $node, Node $attribute, ArrayNode $arguments, $type)
     {
         parent::__construct(
-            array('node' => $node, 'attribute' => $attribute, 'arguments' => $arguments),
-            array('type' => $type)
+            ['node' => $node, 'attribute' => $attribute, 'arguments' => $arguments],
+            ['type' => $type]
         );
     }
 
@@ -82,7 +82,7 @@ public function evaluate($functions, $values)
                 if (!\is_object($obj)) {
                     throw new \RuntimeException('Unable to get a property on a non-object.');
                 }
-                if (!\is_callable($toCall = array($obj, $this->nodes['attribute']->attributes['value']))) {
+                if (!\is_callable($toCall = [$obj, $this->nodes['attribute']->attributes['value']])) {
                     throw new \RuntimeException(sprintf('Unable to call method "%s" of object "%s".', $this->nodes['attribute']->attributes['value'], \get_class($obj)));
                 }
 
@@ -102,13 +102,13 @@ public function toArray()
     {
         switch ($this->attributes['type']) {
             case self::PROPERTY_CALL:
-                return array($this->nodes['node'], '.', $this->nodes['attribute']);
+                return [$this->nodes['node'], '.', $this->nodes['attribute']];
 
             case self::METHOD_CALL:
-                return array($this->nodes['node'], '.', $this->nodes['attribute'], '(', $this->nodes['arguments'], ')');
+                return [$this->nodes['node'], '.', $this->nodes['attribute'], '(', $this->nodes['arguments'], ')'];
 
             case self::ARRAY_CALL:
-                return array($this->nodes['node'], '[', $this->nodes['attribute'], ']');
+                return [$this->nodes['node'], '[', $this->nodes['attribute'], ']'];
         }
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/NameNode.php b/src/Symfony/Component/ExpressionLanguage/Node/NameNode.php
index 9e1462f2c679..1c9c277b2896 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/NameNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/NameNode.php
@@ -23,8 +23,8 @@ class NameNode extends Node
     public function __construct($name)
     {
         parent::__construct(
-            array(),
-            array('name' => $name)
+            [],
+            ['name' => $name]
         );
     }
 
@@ -40,6 +40,6 @@ public function evaluate($functions, $values)
 
     public function toArray()
     {
-        return array($this->attributes['name']);
+        return [$this->attributes['name']];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/Node.php b/src/Symfony/Component/ExpressionLanguage/Node/Node.php
index c6eb9f035177..7923cb1d64e4 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/Node.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/Node.php
@@ -20,14 +20,14 @@
  */
 class Node
 {
-    public $nodes = array();
-    public $attributes = array();
+    public $nodes = [];
+    public $attributes = [];
 
     /**
    
D7AE
  * @param array $nodes      An array of nodes
      * @param array $attributes An array of attributes
      */
-    public function __construct(array $nodes = array(), array $attributes = array())
+    public function __construct(array $nodes = [], array $attributes = [])
     {
         $this->nodes = $nodes;
         $this->attributes = $attributes;
@@ -35,12 +35,12 @@ public function __construct(array $nodes = array(), array $attributes = array())
 
     public function __toString()
     {
-        $attributes = array();
+        $attributes = [];
         foreach ($this->attributes as $name => $value) {
             $attributes[] = sprintf('%s: %s', $name, str_replace("\n", '', var_export($value, true)));
         }
 
-        $repr = array(str_replace('Symfony\Component\ExpressionLanguage\Node\\', '', \get_class($this)).'('.implode(', ', $attributes));
+        $repr = [str_replace('Symfony\Component\ExpressionLanguage\Node\\', '', \get_class($this)).'('.implode(', ', $attributes)];
 
         if (\count($this->nodes)) {
             foreach ($this->nodes as $node) {
@@ -66,7 +66,7 @@ public function compile(Compiler $compiler)
 
     public function evaluate($functions, $values)
     {
-        $results = array();
+        $results = [];
         foreach ($this->nodes as $node) {
             $results[] = $node->evaluate($functions, $values);
         }
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/UnaryNode.php b/src/Symfony/Component/ExpressionLanguage/Node/UnaryNode.php
index 583103217a62..497b7fe53bc9 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/UnaryNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/UnaryNode.php
@@ -20,18 +20,18 @@
  */
 class UnaryNode extends Node
 {
-    private static $operators = array(
+    private static $operators = [
         '!' => '!',
         'not' => '!',
         '+' => '+',
         '-' => '-',
-    );
+    ];
 
     public function __construct($operator, Node $node)
     {
         parent::__construct(
-            array('node' => $node),
-            array('operator' => $operator)
+            ['node' => $node],
+            ['operator' => $operator]
         );
     }
 
@@ -61,6 +61,6 @@ public function evaluate($functions, $values)
 
     public function toArray()
     {
-        return array('(', $this->attributes['operator'].' ', $this->nodes['node'], ')');
+        return ['(', $this->attributes['operator'].' ', $this->nodes['node'], ')'];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Parser.php b/src/Symfony/Component/ExpressionLanguage/Parser.php
index a3b31ce9769c..0930bac2eff9 100644
--- a/src/Symfony/Component/ExpressionLanguage/Parser.php
+++ b/src/Symfony/Component/ExpressionLanguage/Parser.php
@@ -36,40 +36,40 @@ public function __construct(array $functions)
     {
         $this->functions = $functions;
 
-        $this->unaryOperators = array(
-            'not' => array('precedence' => 50),
-            '!' => array('precedence' => 50),
-            '-' => array('precedence' => 500),
-            '+' => array('precedence' => 500),
-        );
-        $this->binaryOperators = array(
-            'or' => array('precedence' => 10, 'associativity' => self::OPERATOR_LEFT),
-            '||' => array('precedence' => 10, 'associativity' => self::OPERATOR_LEFT),
-            'and' => array('precedence' => 15, 'associativity' => self::OPERATOR_LEFT),
-            '&&' => array('precedence' => 15, 'associativity' => self::OPERATOR_LEFT),
-            '|' => array('precedence' => 16, 'associativity' => self::OPERATOR_LEFT),
-            '^' => array('precedence' => 17, 'associativity' => self::OPERATOR_LEFT),
-            '&' => array('precedence' => 18, 'associativity' => self::OPERATOR_LEFT),
-            '==' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            '===' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            '!=' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            '!==' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            '<' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            '>' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            '>=' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            '<=' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            'not in' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            'in' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            'matches' => array('precedence' => 20, 'associativity' => self::OPERATOR_LEFT),
-            '..' => array('precedence' => 25, 'associativity' => self::OPERATOR_LEFT),
-            '+' => array('precedence' => 30, 'associativity' => self::OPERATOR_LEFT),
-            '-' => array('precedence' => 30, 'associativity' => self::OPERATOR_LEFT),
-            '~' => array('precedence' => 40, 'associativity' => self::OPERATOR_LEFT),
-            '*' => array('precedence' => 60, 'associativity' => self::OPERATOR_LEFT),
-            '/' => array('precedence' => 60, 'associativity' => self::OPERATOR_LEFT),
-            '%' => array('precedence' => 60, 'associativity' => self::OPERATOR_LEFT),
-            '**' => array('precedence' => 200, 'associativity' => self::OPERATOR_RIGHT),
-        );
+        $this->unaryOperators = [
+            'not' => ['precedence' => 50],
+            '!' => ['precedence' => 50],
+            '-' => ['precedence' => 500],
+            '+' => ['precedence' => 500],
+        ];
+        $this->binaryOperators = [
+            'or' => ['precedence' => 10, 'associativity' => self::OPERATOR_LEFT],
+            '||' => ['precedence' => 10, 'associativity' => self::OPERATOR_LEFT],
+            'and' => ['precedence' => 15, 'associativity' => self::OPERATOR_LEFT],
+            '&&' => ['precedence' => 15, 'associativity' => self::OPERATOR_LEFT],
+            '|' => ['precedence' => 16, 'associativity' => self::OPERATOR_LEFT],
+            '^' => ['precedence' => 17, 'associativity' => self::OPERATOR_LEFT],
+            '&' => ['precedence' => 18, 'associativity' => self::OPERATOR_LEFT],
+            '==' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            '===' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            '!=' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            '!==' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            '<' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            '>' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            '>=' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            '<=' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            'not in' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            'in' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            'matches' => ['precedence' => 20, 'associativity' => self::OPERATOR_LEFT],
+            '..' => ['precedence' => 25, 'associativity' => self::OPERATOR_LEFT],
+            '+' => ['precedence' => 30, 'associativity' => self::OPERATOR_LEFT],
+            '-' => ['precedence' => 30, 'associativity' => self::OPERATOR_LEFT],
+            '~' => ['precedence' => 40, 'associativity' => self::OPERATOR_LEFT],
+            '*' => ['precedence' => 60, 'associativity' => self::OPERATOR_LEFT],
+            '/' => ['precedence' => 60, 'associativity' => self::OPERATOR_LEFT],
+            '%' => ['precedence' => 60, 'associativity' => self::OPERATOR_LEFT],
+            '**' => ['precedence' => 200, 'associativity' => self::OPERATOR_RIGHT],
+        ];
     }
 
     /**
@@ -92,7 +92,7 @@ public function __construct(array $functions)
      *
      * @throws SyntaxError
      */
-    public function parse(TokenStream $stream, $names = array())
+    public function parse(TokenStream $stream, $names = [])
     {
         $this->stream = $stream;
         $this->names = $names;
@@ -364,7 +364,7 @@ public function parsePostfixExpression($node)
      */
     public function parseArguments()
     {
-        $args = array();
+        $args = [];
         $this->stream->expect(Token::PUNCTUATION_TYPE, '(', 'A list of arguments must begin with an opening parenthesis');
         while (!$this->stream->current->test(Token::PUNCTUATION_TYPE, ')')) {
             if (!empty($args)) {
diff --git a/src/Symfony/Component/ExpressionLanguage/ParserCache/ArrayParserCache.php b/src/Symfony/Component/ExpressionLanguage/ParserCache/ArrayParserCache.php
index 124962505dfb..8f9d9f43a1f5 100644
--- a/src/Symfony/Component/ExpressionLanguage/ParserCache/ArrayParserCache.php
+++ b/src/Symfony/Component/ExpressionLanguage/ParserCache/ArrayParserCache.php
@@ -22,7 +22,7 @@
  */
 class ArrayParserCache implements ParserCacheInterface
 {
-    private $cache = array();
+    private $cache = [];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheAdapter.php b/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheAdapter.php
index a3e227d0a5cc..30d9f8425b98 100644
--- a/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheAdapter.php
+++ b/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheAdapter.php
@@ -65,7 +65,7 @@ public function save(CacheItemInterface $item)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         throw new \BadMethodCallException('Not implemented');
     }
diff --git a/src/Symfony/Component/ExpressionLanguage/Resources/bin/generate_operator_regex.php b/src/Symfony/Component/ExpressionLanguage/Resources/bin/generate_operator_regex.php
index 74a100890d9a..e1196c7f514a 100644
--- a/src/Symfony/Component/ExpressionLanguage/Resources/bin/generate_operator_regex.php
+++ b/src/Symfony/Component/ExpressionLanguage/Resources/bin/generate_operator_regex.php
@@ -9,11 +9,11 @@
  * file that was distributed with this source code.
  */
 
-$operators = array('not', '!', 'or', '||', '&&', 'and', '|', '^', '&', '==', '===', '!=', '!==', '<', '>', '>=', '<=', 'not in', 'in', '..', '+', '-', '~', '*', '/', '%', 'matches', '**');
+$operators = ['not', '!', 'or', '||', '&&', 'and', '|', '^', '&', '==', '===', '!=', '!==', '<', '>', '>=', '<=', 'not in', 'in', '..', '+', '-', '~', '*', '/', '%', 'matches', '**'];
 $operators = array_combine($operators, array_map('strlen', $operators));
 arsort($operators);
 
-$regex = array();
+$regex = [];
 foreach ($operators as $operator => $length) {
     // an operator that ends with a character must be followed by
     // a whitespace or a parenthesis
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
index a1e5b7cc7d43..d2a660286da1 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
@@ -56,10 +56,10 @@ public function testCachedParse()
             ->with($cacheItemMock)
         ;
 
-        $parsedExpression = $expressionLanguage->parse('1 + 1', array());
+        $parsedExpression = $expressionLanguage->parse('1 + 1', []);
         $this->assertSame($savedParsedExpression, $parsedExpression);
 
-        $parsedExpression = $expressionLanguage->parse('1 + 1', array());
+        $parsedExpression = $expressionLanguage->parse('1 + 1', []);
         $this->assertSame($savedParsedExpression, $parsedExpression);
     }
 
@@ -90,7 +90,7 @@ public function testCachedParseWithDeprecatedParserCacheInterface()
             }))
         ;
 
-        $parsedExpression = $expressionLanguage->parse('1 + 1', array());
+        $parsedExpression = $expressionLanguage->parse('1 + 1', []);
         $this->assertSame($savedParsedExpression, $parsedExpression);
     }
 
@@ -115,7 +115,7 @@ public function testConstantFunction()
 
     public function testProviders()
     {
-        $expressionLanguage = new ExpressionLanguage(null, array(new TestProvider()));
+        $expressionLanguage = new ExpressionLanguage(null, [new TestProvider()]);
         $this->assertEquals('foo', $expressionLanguage->evaluate('identity("foo")'));
         $this->assertEquals('"foo"', $expressionLanguage->compile('identity("foo")'));
         $this->assertEquals('FOO', $expressionLanguage->evaluate('strtoupper("foo")'));
@@ -153,38 +153,38 @@ public function testShortCircuitOperatorsCompile($expression, array $names, $exp
     public function testParseThrowsInsteadOfNotice()
     {
         $expressionLanguage = new ExpressionLanguage();
-        $expressionLanguage->parse('node.', array('node'));
+        $expressionLanguage->parse('node.', ['node']);
     }
 
     public function shortCircuitProviderEvaluate()
     {
-        $object = $this->getMockBuilder('stdClass')->setMethods(array('foo'))->getMock();
+        $object = $this->getMockBuilder('stdClass')->setMethods(['foo'])->getMock();
         $object->expects($this->never())->method('foo');
 
-        return array(
-            array('false and object.foo()', array('object' => $object), false),
-            array('false && object.foo()', array('object' => $object), false),
-            array('true || object.foo()', array('object' => $object), true),
-            array('true or object.foo()', array('object' => $object), true),
-        );
+        return [
+            ['false and object.foo()', ['object' => $object], false],
+            ['false && object.foo()', ['object' => $object], false],
+            ['true || object.foo()', ['object' => $object], true],
+            ['true or object.foo()', ['object' => $object], true],
+        ];
     }
 
     public function shortCircuitProviderCompile()
     {
-        return array(
-            array('false and foo', array('foo' => 'foo'), false),
-            array('false && foo', array('foo' => 'foo'), false),
-            array('true || foo', array('foo' => 'foo'), true),
-            array('true or foo', array('foo' => 'foo'), true),
-        );
+        return [
+            ['false and foo', ['foo' => 'foo'], false],
+            ['false && foo', ['foo' => 'foo'], false],
+            ['true || foo', ['foo' => 'foo'], true],
+            ['true or foo', ['foo' => 'foo'], true],
+        ];
     }
 
     public function testCachingForOverriddenVariableNames()
     {
         $expressionLanguage = new ExpressionLanguage();
         $expression = 'a + b';
-        $expressionLanguage->evaluate($expression, array('a' => 1, 'b' => 1));
-        $result = $expressionLanguage->compile($expression, array('a', 'B' => 'b'));
+        $expressionLanguage->evaluate($expression, ['a' => 1, 'b' => 1]);
+        $result = $expressionLanguage->compile($expression, ['a', 'B' => 'b']);
         $this->assertSame('($a + $B)', $result);
     }
 
@@ -192,7 +192,7 @@ public function testStrictEquality()
     {
         $expressionLanguage = new ExpressionLanguage();
         $expression = '123 === a';
-        $result = $expressionLanguage->compile($expression, array('a'));
+        $result = $expressionLanguage->compile($expression, ['a']);
         $this->assertSame('(123 === $a)', $result);
     }
 
@@ -201,7 +201,7 @@ public function testCachingWithDifferentNamesOrder()
         $cacheMock = $this->getMockBuilder('Psr\Cache\CacheItemPoolInterface')->getMock();
         $cacheItemMock = $this->getMockBuilder('Psr\Cache\CacheItemInterface')->getMock();
         $expressionLanguage = new ExpressionLanguage($cacheMock);
-        $savedParsedExpressions = array();
+        $savedParsedExpressions = [];
 
         $cacheMock
             ->expects($this->exactly(2))
@@ -234,8 +234,8 @@ public function testCachingWithDifferentNamesOrder()
         ;
 
         $expression = 'a + b';
-        $expressionLanguage->compile($expression, array('a', 'B' => 'b'));
-        $expressionLanguage->compile($expression, array('B' => 'b', 'a'));
+        $expressionLanguage->compile($expression, ['a', 'B' => 'b']);
+        $expressionLanguage->compile($expression, ['B' => 'b', 'a']);
     }
 
     /**
@@ -245,7 +245,7 @@ public function testCachingWithDifferentNamesOrder()
     public function testRegisterAfterParse($registerCallback)
     {
         $el = new ExpressionLanguage();
-        $el->parse('1 + 1', array());
+        $el->parse('1 + 1', []);
         $registerCallback($el);
     }
 
@@ -267,7 +267,7 @@ public function testRegisterAfterEval($registerCallback)
     public function testCallBadCallable()
     {
         $el = new ExpressionLanguage();
-        $el->evaluate('foo.myfunction()', array('foo' => new \stdClass()));
+        $el->evaluate('foo.myfunction()', ['foo' => new \stdClass()]);
     }
 
     /**
@@ -283,22 +283,22 @@ public function testRegisterAfterCompile($registerCallback)
 
     public function getRegisterCallbacks()
     {
-        return array(
-            array(
+        return [
+            [
                 function (ExpressionLanguage $el) {
                     $el->register('fn', function () {}, function () {});
                 },
-            ),
-            array(
+            ],
+            [
                 function (ExpressionLanguage $el) {
                     $el->addFunction(new ExpressionFunction('fn', function () {}, function () {}));
                 },
-            ),
-            array(
+            ],
+            [
                 function (ExpressionLanguage $el) {
                     $el->registerProvider(new TestProvider());
                 },
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Fixtures/TestProvider.php b/src/Symfony/Component/ExpressionLanguage/Tests/Fixtures/TestProvider.php
index 20c5182bba43..8405d4f97585 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Fixtures/TestProvider.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Fixtures/TestProvider.php
@@ -19,7 +19,7 @@ class TestProvider implements ExpressionFunctionProviderInterface
 {
     public function getFunctions()
     {
-        return array(
+        return [
             new ExpressionFunction('identity', function ($input) {
                 return $input;
             }, function (array $values, $input) {
@@ -31,7 +31,7 @@ public function getFunctions()
             ExpressionFunction::fromPhp('\strtolower'),
 
             ExpressionFunction::fromPhp('Symfony\Component\ExpressionLanguage\Tests\Fixtures\fn_namespaced', 'fn_namespaced'),
-        );
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/LexerTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/LexerTest.php
index 16bf4508628b..ba35e7d19a9e 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/LexerTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/LexerTest.php
@@ -59,33 +59,33 @@ public function testTokenizeThrowsErrorOnUnclosedBrace()
 
     public function getTokenizeData()
     {
-        return array(
-            array(
-                array(new Token('name', 'a', 3)),
+        return [
+            [
+                [new Token('name', 'a', 3)],
                 '  a  ',
-            ),
-            array(
-                array(new Token('name', 'a', 1)),
+            ],
+            [
+                [new Token('name', 'a', 1)],
                 'a',
-            ),
-            array(
-                array(new Token('string', 'foo', 1)),
+            ],
+            [
+                [new Token('string', 'foo', 1)],
                 '"foo"',
-            ),
-            array(
-                array(new Token('number', '3', 1)),
+            ],
+            [
+                [new Token('number', '3', 1)],
                 '3',
-            ),
-            array(
-                array(new Token('operator', '+', 1)),
+            ],
+            [
+                [new Token('operator', '+', 1)],
                 '+',
-            ),
-            array(
-                array(new Token('punctuation', '.', 1)),
+            ],
+            [
+                [new Token('punctuation', '.', 1)],
                 '.',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     new Token('punctuation', '(', 1),
                     new Token('number', '3', 2),
                     new Token('operator', '+', 4),
@@ -101,21 +101,21 @@ public function getTokenizeData()
                     new Token('punctuation', '[', 25),
                     new Token('number', '4', 26),
                     new Token('punctuation', ']', 27),
-                ),
+                ],
                 '(3 + 5) ~ foo("bar").baz[4]',
-            ),
-            array(
-                array(new Token('operator', '..', 1)),
+            ],
+            [
+                [new Token('operator', '..', 1)],
                 '..',
-            ),
-            array(
-                array(new Token('string', '#foo', 1)),
+            ],
+            [
+                [new Token('string', '#foo', 1)],
                 "'#foo'",
-            ),
-            array(
-                array(new Token('string', '#foo', 1)),
+            ],
+            [
+                [new Token('string', '#foo', 1)],
                 '"#foo"',
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/AbstractNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/AbstractNodeTest.php
index a6f80c2f6982..297503746e00 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/AbstractNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/AbstractNodeTest.php
@@ -19,7 +19,7 @@ abstract class AbstractNodeTest extends TestCase
     /**
      * @dataProvider getEvaluateData
      */
-    public function testEvaluate($expected, $node, $variables = array(), $functions = array())
+    public function testEvaluate($expected, $node, $variables = [], $functions = [])
     {
         $this->assertSame($expected, $node->evaluate($functions, $variables));
     }
@@ -29,7 +29,7 @@ abstract public function getEvaluateData();
     /**
      * @dataProvider getCompileData
      */
-    public function testCompile($expected, $node, $functions = array())
+    public function testCompile($expected, $node, $functions = [])
     {
         $compiler = new Compiler($functions);
         $node->compile($compiler);
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArgumentsNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArgumentsNodeTest.php
index 60a6d1ca2a71..9d88b4ae75d6 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArgumentsNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArgumentsNodeTest.php
@@ -17,16 +17,16 @@ class ArgumentsNodeTest extends ArrayNodeTest
 {
     public function getCompileData()
     {
-        return array(
-            array('"a", "b"', $this->getArrayNode()),
-        );
+        return [
+            ['"a", "b"', $this->getArrayNode()],
+        ];
     }
 
     public function getDumpData()
     {
-        return array(
-            array('"a", "b"', $this->getArrayNode()),
-        );
+        return [
+            ['"a", "b"', $this->getArrayNode()],
+        ];
     }
 
     protected function createArrayNode()
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArrayNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArrayNodeTest.php
index 11a35d461c05..82fbfc67b2dc 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArrayNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArrayNodeTest.php
@@ -30,31 +30,31 @@ public function testSerialization()
 
     public function getEvaluateData()
     {
-        return array(
-            array(array('b' => 'a', 'b'), $this->getArrayNode()),
-        );
+        return [
+            [['b' => 'a', 'b'], $this->getArrayNode()],
+        ];
     }
 
     public function getCompileData()
     {
-        return array(
-            array('array("b" => "a", 0 => "b")', $this->getArrayNode()),
-        );
+        return [
+            ['array("b" => "a", 0 => "b")', $this->getArrayNode()],
+        ];
     }
 
     public function getDumpData()
     {
-        yield array('{"b": "a", 0: "b"}', $this->getArrayNode());
+        yield ['{"b": "a", 0: "b"}', $this->getArrayNode()];
 
         $array = $this->createArrayNode();
         $array->addElement(new ConstantNode('c'), new ConstantNode('a"b'));
         $array->addElement(new ConstantNode('d'), new ConstantNode('a\b'));
-        yield array('{"a\\"b": "c", "a\\\\b": "d"}', $array);
+        yield ['{"a\\"b": "c", "a\\\\b": "d"}', $array];
 
         $array = $this->createArrayNode();
         $array->addElement(new ConstantNode('c'));
         $array->addElement(new ConstantNode('d'));
-        yield array('["c", "d"]', $array);
+        yield ['["c", "d"]', $array];
     }
 
     protected function getArrayNode()
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/BinaryNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/BinaryNodeTest.php
index f8456f8dbb74..4a3802085806 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/BinaryNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/BinaryNodeTest.php
@@ -23,47 +23,47 @@ public function getEvaluateData()
         $array->addElement(new ConstantNode('a'));
         $array->addElement(new ConstantNode('b'));
 
-        return array(
-            array(true, new BinaryNode('or', new ConstantNode(true), new ConstantNode(false))),
-            array(true, new BinaryNode('||', new ConstantNode(true), new ConstantNode(false))),
-            array(false, new BinaryNode('and', new ConstantNode(true), new ConstantNode(false))),
-            array(false, new BinaryNode('&&', new ConstantNode(true), new ConstantNode(false))),
-
-            array(0, new BinaryNode('&', new ConstantNode(2), new ConstantNode(4))),
-            array(6, new BinaryNode('|', new ConstantNode(2), new ConstantNode(4))),
-            array(6, new BinaryNode('^', new ConstantNode(2), new ConstantNode(4))),
-
-            array(true, new BinaryNode('<', new ConstantNode(1), new ConstantNode(2))),
-            array(true, new BinaryNode('<=', new ConstantNode(1), new ConstantNode(2))),
-            array(true, new BinaryNode('<=', new ConstantNode(1), new ConstantNode(1))),
-
-            array(false, new BinaryNode('>', new ConstantNode(1), new ConstantNode(2))),
-            array(false, new BinaryNode('>=', new ConstantNode(1), new ConstantNode(2))),
-            array(true, new BinaryNode('>=', new ConstantNode(1), new ConstantNode(1))),
-
-            array(true, new BinaryNode('===', new ConstantNode(true), new ConstantNode(true))),
-            array(false, new BinaryNode('!==', new ConstantNode(true), new ConstantNode(true))),
-
-            array(false, new BinaryNode('==', new ConstantNode(2), new ConstantNode(1))),
-            array(true, new BinaryNode('!=', new ConstantNode(2), new ConstantNode(1))),
-
-            array(-1, new BinaryNode('-', new ConstantNode(1), new ConstantNode(2))),
-            array(3, new BinaryNode('+', new ConstantNode(1), new ConstantNode(2))),
-            array(4, new BinaryNode('*', new ConstantNode(2), new ConstantNode(2))),
-            array(1, new BinaryNode('/', new ConstantNode(2), new ConstantNode(2))),
-            array(1, new BinaryNode('%', new ConstantNode(5), new ConstantNode(2))),
-            array(25, new BinaryNode('**', new ConstantNode(5), new ConstantNode(2))),
-            array('ab', new BinaryNode('~', new ConstantNode('a'), new ConstantNode('b'))),
-
-            array(true, new BinaryNode('in', new ConstantNode('a'), $array)),
-            array(false, new BinaryNode('in', new ConstantNode('c'), $array)),
-            array(true, new BinaryNode('not in', new ConstantNode('c'), $array)),
-            array(false, new BinaryNode('not in', new ConstantNode('a'), $array)),
-
-            array(array(1, 2, 3), new BinaryNode('..', new ConstantNode(1), new ConstantNode(3))),
-
-            array(1, new BinaryNode('matches', new ConstantNode('abc'), new ConstantNode('/^[a-z]+$/'))),
-        );
+        return [
+            [true, new BinaryNode('or', new ConstantNode(true), new ConstantNode(false))],
+            [true, new BinaryNode('||', new ConstantNode(true), new ConstantNode(false))],
+            [false, new BinaryNode('and', new ConstantNode(true), new ConstantNode(false))],
+            [false, new BinaryNode('&&', new ConstantNode(true), new ConstantNode(false))],
+
+            [0, new BinaryNode('&', new ConstantNode(2), new ConstantNode(4))],
+            [6, new BinaryNode('|', new ConstantNode(2), new ConstantNode(4))],
+            [6, new BinaryNode('^', new ConstantNode(2), new ConstantNode(4))],
+
+            [true, new BinaryNode('<', new ConstantNode(1), new ConstantNode(2))],
+            [true, new BinaryNode('<=', new ConstantNode(1), new ConstantNode(2))],
+            [true, new BinaryNode('<=', new ConstantNode(1), new ConstantNode(1))],
+
+            [false, new BinaryNode('>', new ConstantNode(1), new ConstantNode(2))],
+            [false, new BinaryNode('>=', new ConstantNode(1), new ConstantNode(2))],
+            [true, new BinaryNode('>=', new ConstantNode(1), new ConstantNode(1))],
+
+            [true, new BinaryNode('===', new ConstantNode(true), new ConstantNode(true))],
+            [false, new BinaryNode('!==', new ConstantNode(true), new ConstantNode(true))],
+
+            [false, new BinaryNode('==', new ConstantNode(2), new ConstantNode(1))],
+            [true, new BinaryNode('!=', new ConstantNode(2), new ConstantNode(1))],
+
+            [-1, new BinaryNode('-', new ConstantNode(1), new ConstantNode(2))],
+            [3, new BinaryNode('+', new ConstantNode(1), new ConstantNode(2))],
+            [4, new BinaryNode('*', new ConstantNode(2), new ConstantNode(2))],
+            [1, new BinaryNode('/', new ConstantNode(2), new ConstantNode(2))],
+            [1, new BinaryNode('%', new ConstantNode(5), new ConstantNode(2))],
+            [25, new BinaryNode('**', new ConstantNode(5), new ConstantNode(2))],
+            ['ab', new BinaryNode('~', new ConstantNode('a'), new ConstantNode('b'))],
+
+            [true, new BinaryNode('in', new ConstantNode('a'), $array)],
+            [false, new BinaryNode('in', new ConstantNode('c'), $array)],
+            [true, new BinaryNode('not in', new ConstantNode('c'), $array)],
+            [false, new BinaryNode('not in', new ConstantNode('a'), $array)],
+
+            [[1, 2, 3], new BinaryNode('..', new ConstantNode(1), new ConstantNode(3))],
+
+            [1, new BinaryNode('matches', new ConstantNode('abc'), new ConstantNode('/^[a-z]+$/'))],
+        ];
     }
 
     public function getCompileData()
@@ -72,47 +72,47 @@ public function getCompileData()
         $array->addElement(new ConstantNode('a'));
         $array->addElement(new ConstantNode('b'));
 
-        return array(
-            array('(true || false)', new BinaryNode('or', new ConstantNode(true), new ConstantNode(false))),
-            array('(true || false)', new BinaryNode('||', new ConstantNode(true), new ConstantNode(false))),
-            array('(true && false)', new BinaryNode('and', new ConstantNode(true), new ConstantNode(false))),
-            array('(true && false)', new BinaryNode('&&', new ConstantNode(true), new ConstantNode(false))),
+        return [
+            ['(true || false)', new BinaryNode('or', new ConstantNode(true), new ConstantNode(false))],
+            ['(true || false)', new BinaryNode('||', new ConstantNode(true), new ConstantNode(false))],
+            ['(true && false)', new BinaryNode('and', new ConstantNode(true), new ConstantNode(false))],
+            ['(true && false)', new BinaryNode('&&', new ConstantNode(true), new ConstantNode(false))],
 
-            array('(2 & 4)', new BinaryNode('&', new ConstantNode(2), new ConstantNode(4))),
-            array('(2 | 4)', new BinaryNode('|', new ConstantNode(2), new ConstantNode(4))),
-            array('(2 ^ 4)', new BinaryNode('^', new ConstantNode(2), new ConstantNode(4))),
+            ['(2 & 4)', new BinaryNode('&', new ConstantNode(2), new ConstantNode(4))],
+            ['(2 | 4)', new BinaryNode('|', new ConstantNode(2), new ConstantNode(4))],
+            ['(2 ^ 4)', new BinaryNode('^', new ConstantNode(2), new ConstantNode(4))],
 
-            array('(1 < 2)', new BinaryNode('<', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 <= 2)', new BinaryNode('<=', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 <= 1)', new BinaryNode('<=', new ConstantNode(1), new ConstantNode(1))),
+            ['(1 < 2)', new BinaryNode('<', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 <= 2)', new BinaryNode('<=', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 <= 1)', new BinaryNode('<=', new ConstantNode(1), new ConstantNode(1))],
 
-            array('(1 > 2)', new BinaryNode('>', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 >= 2)', new BinaryNode('>=', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 >= 1)', new BinaryNode('>=', new ConstantNode(1), new ConstantNode(1))),
+            ['(1 > 2)', new BinaryNode('>', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 >= 2)', new BinaryNode('>=', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 >= 1)', new BinaryNode('>=', new ConstantNode(1), new ConstantNode(1))],
 
-            array('(true === true)', new BinaryNode('===', new ConstantNode(true), new ConstantNode(true))),
-            array('(true !== true)', new BinaryNode('!==', new ConstantNode(true), new ConstantNode(true))),
+            ['(true === true)', new BinaryNode('===', new ConstantNode(true), new ConstantNode(true))],
+            ['(true !== true)', new BinaryNode('!==', new ConstantNode(true), new ConstantNode(true))],
 
-            array('(2 == 1)', new BinaryNode('==', new ConstantNode(2), new ConstantNode(1))),
-            array('(2 != 1)', new BinaryNode('!=', new ConstantNode(2), new ConstantNode(1))),
+            ['(2 == 1)', new BinaryNode('==', new ConstantNode(2), new ConstantNode(1))],
+            ['(2 != 1)', new BinaryNode('!=', new ConstantNode(2), new ConstantNode(1))],
 
-            array('(1 - 2)', new BinaryNode('-', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 + 2)', new BinaryNode('+', new ConstantNode(1), new ConstantNode(2))),
-            array('(2 * 2)', new BinaryNode('*', new ConstantNode(2), new ConstantNode(2))),
-            array('(2 / 2)', new BinaryNode('/', new ConstantNode(2), new ConstantNode(2))),
-            array('(5 % 2)', new BinaryNode('%', new ConstantNode(5), new ConstantNode(2))),
-            array('pow(5, 2)', new BinaryNode('**', new ConstantNode(5), new ConstantNode(2))),
-            array('("a" . "b")', new BinaryNode('~', new ConstantNode('a'), new ConstantNode('b'))),
+            ['(1 - 2)', new BinaryNode('-', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 + 2)', new BinaryNode('+', new ConstantNode(1), new ConstantNode(2))],
+            ['(2 * 2)', new BinaryNode('*', new ConstantNode(2), new ConstantNode(2))],
+            ['(2 / 2)', new BinaryNode('/', new ConstantNode(2), new ConstantNode(2))],
+            ['(5 % 2)', new BinaryNode('%', new ConstantNode(5), new ConstantNode(2))],
+            ['pow(5, 2)', new BinaryNode('**', new ConstantNode(5), new ConstantNode(2))],
+            ['("a" . "b")', new BinaryNode('~', new ConstantNode('a'), new ConstantNode('b'))],
 
-            array('in_array("a", array(0 => "a", 1 => "b"))', new BinaryNode('in', new ConstantNode('a'), $array)),
-            array('in_array("c", array(0 => "a", 1 => "b"))', new BinaryNode('in', new ConstantNode('c'), $array)),
-            array('!in_array("c", array(0 => "a", 1 => "b"))', new BinaryNode('not in', new ConstantNode('c'), $array)),
-            array('!in_array("a", array(0 => "a", 1 => "b"))', new BinaryNode('not in', new ConstantNode('a'), $array)),
+            ['in_array("a", array(0 => "a", 1 => "b"))', new BinaryNode('in', new ConstantNode('a'), $array)],
+            ['in_array("c", array(0 => "a", 1 => "b"))', new BinaryNode('in', new ConstantNode('c'), $array)],
+            ['!in_array("c", array(0 => "a", 1 => "b"))', new BinaryNode('not in', new ConstantNode('c'), $array)],
+            ['!in_array("a", array(0 => "a", 1 => "b"))', new BinaryNode('not in', new ConstantNode('a'), $array)],
 
-            array('range(1, 3)', new BinaryNode('..', new ConstantNode(1), new ConstantNode(3))),
+            ['range(1, 3)', new BinaryNode('..', new ConstantNode(1), new ConstantNode(3))],
 
-            array('preg_match("/^[a-z]+/i\$/", "abc")', new BinaryNode('matches', new ConstantNode('abc'), new ConstantNode('/^[a-z]+/i$/'))),
-        );
+            ['preg_match("/^[a-z]+/i\$/", "abc")', new BinaryNode('matches', new ConstantNode('abc'), new ConstantNode('/^[a-z]+/i$/'))],
+        ];
     }
 
     public function getDumpData()
@@ -121,46 +121,46 @@ public function getDumpData()
         $array->addElement(new ConstantNode('a'));
         $array->addElement(new ConstantNode('b'));
 
-        return array(
-            array('(true or false)', new BinaryNode('or', new ConstantNode(true), new ConstantNode(false))),
-            array('(true || false)', new BinaryNode('||', new ConstantNode(true), new ConstantNode(false))),
-            array('(true and false)', new BinaryNode('and', new ConstantNode(true), new ConstantNode(false))),
-            array('(true && false)', new BinaryNode('&&', new ConstantNode(true), new ConstantNode(false))),
+        return [
+            ['(true or false)', new BinaryNode('or', new ConstantNode(true), new ConstantNode(false))],
+            ['(true || false)', new BinaryNode('||', new ConstantNode(true), new ConstantNode(false))],
+            ['(true and false)', new BinaryNode('and', new ConstantNode(true), new ConstantNode(false))],
+            ['(true && false)', new BinaryNode('&&', new ConstantNode(true), new ConstantNode(false))],
 
-            array('(2 & 4)', new BinaryNode('&', new ConstantNode(2), new ConstantNode(4))),
-            array('(2 | 4)', new BinaryNode('|', new ConstantNode(2), new ConstantNode(4))),
-            array('(2 ^ 4)', new BinaryNode('^', new ConstantNode(2), new ConstantNode(4))),
+            ['(2 & 4)', new BinaryNode('&', new ConstantNode(2), new ConstantNode(4))],
+            ['(2 | 4)', new BinaryNode('|', new ConstantNode(2), new ConstantNode(4))],
+            ['(2 ^ 4)', new BinaryNode('^', new ConstantNode(2), new ConstantNode(4))],
 
-            array('(1 < 2)', new BinaryNode('<', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 <= 2)', new BinaryNode('<=', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 <= 1)', new BinaryNode('<=', new ConstantNode(1), new ConstantNode(1))),
+            ['(1 < 2)', new BinaryNode('<', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 <= 2)', new BinaryNode('<=', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 <= 1)', new BinaryNode('<=', new ConstantNode(1), new ConstantNode(1))],
 
-            array('(1 > 2)', new BinaryNode('>', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 >= 2)', new BinaryNode('>=', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 >= 1)', new BinaryNode('>=', new ConstantNode(1), new ConstantNode(1))),
+            ['(1 > 2)', new BinaryNode('>', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 >= 2)', new BinaryNode('>=', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 >= 1)', new BinaryNode('>=', new ConstantNode(1), new ConstantNode(1))],
 
-            array('(true === true)', new BinaryNode('===', new ConstantNode(true), new ConstantNode(true))),
-            array('(true !== true)', new BinaryNode('!==', new ConstantNode(true), new ConstantNode(true))),
+            ['(true === true)', new BinaryNode('===', new ConstantNode(true), new ConstantNode(true))],
+            ['(true !== true)', new BinaryNode('!==', new ConstantNode(true), new ConstantNode(true))],
 
-            array('(2 == 1)', new BinaryNode('==', new ConstantNode(2), new ConstantNode(1))),
-            array('(2 != 1)', new BinaryNode('!=', new ConstantNode(2), new ConstantNode(1))),
+            ['(2 == 1)', new BinaryNode('==', new ConstantNode(2), new ConstantNode(1))],
+            ['(2 != 1)', new BinaryNode('!=', new ConstantNode(2), new ConstantNode(1))],
 
-            array('(1 - 2)', new BinaryNode('-', new ConstantNode(1), new ConstantNode(2))),
-            array('(1 + 2)', new BinaryNode('+', new ConstantNode(1), new ConstantNode(2))),
-            array('(2 * 2)', new BinaryNode('*', new ConstantNode(2), new ConstantNode(2))),
-            array('(2 / 2)', new BinaryNode('/', new ConstantNode(2), new ConstantNode(2))),
-            array('(5 % 2)', new BinaryNode('%', new ConstantNode(5), new ConstantNode(2))),
-            array('(5 ** 2)', new BinaryNode('**', new ConstantNode(5), new ConstantNode(2))),
-            array('("a" ~ "b")', new BinaryNode('~', new ConstantNode('a'), new ConstantNode('b'))),
+            ['(1 - 2)', new BinaryNode('-', new ConstantNode(1), new ConstantNode(2))],
+            ['(1 + 2)', new BinaryNode('+', new ConstantNode(1), new ConstantNode(2))],
+            ['(2 * 2)', new BinaryNode('*', new ConstantNode(2), new ConstantNode(2))],
+            ['(2 / 2)', new BinaryNode('/', new ConstantNode(2), new ConstantNode(2))],
+            ['(5 % 2)', new BinaryNode('%', new ConstantNode(5), new ConstantNode(2))],
+            ['(5 ** 2)', new BinaryNode('**', new ConstantNode(5), new ConstantNode(2))],
+            ['("a" ~ "b")', new BinaryNode('~', new ConstantNode('a'), new ConstantNode('b'))],
 
-            array('("a" in ["a", "b"])', new BinaryNode('in', new ConstantNode('a'), $array)),
-            array('("c" in ["a", "b"])', new BinaryNode('in', new ConstantNode('c'), $array)),
-            array('("c" not in ["a", "b"])', new BinaryNode('not in', new ConstantNode('c'), $array)),
-            array('("a" not in ["a", "b"])', new BinaryNode('not in', new ConstantNode('a'), $array)),
+            ['("a" in ["a", "b"])', new BinaryNode('in', new ConstantNode('a'), $array)],
+            ['("c" in ["a", "b"])', new BinaryNode('in', new ConstantNode('c'), $array)],
+            ['("c" not in ["a", "b"])', new BinaryNode('not in', new ConstantNode('c'), $array)],
+            ['("a" not in ["a", "b"])', new BinaryNode('not in', new ConstantNode('a'), $array)],
 
-            array('(1 .. 3)', new BinaryNode('..', new ConstantNode(1), new ConstantNode(3))),
+            ['(1 .. 3)', new BinaryNode('..', new ConstantNode(1), new ConstantNode(3))],
 
-            array('("abc" matches "/^[a-z]+/i$/")', new BinaryNode('matches', new ConstantNode('abc'), new ConstantNode('/^[a-z]+/i$/'))),
-        );
+            ['("abc" matches "/^[a-z]+/i$/")', new BinaryNode('matches', new ConstantNode('abc'), new ConstantNode('/^[a-z]+/i$/'))],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConditionalNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConditionalNodeTest.php
index cbf9e8d43cde..13b7cbdec125 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConditionalNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConditionalNodeTest.php
@@ -18,25 +18,25 @@ class ConditionalNodeTest extends AbstractNodeTest
 {
     public function getEvaluateData()
     {
-        return array(
-            array(1, new ConditionalNode(new ConstantNode(true), new ConstantNode(1), new ConstantNode(2))),
-            array(2, new ConditionalNode(new ConstantNode(false), new ConstantNode(1), new ConstantNode(2))),
-        );
+        return [
+            [1, new ConditionalNode(new ConstantNode(true), new ConstantNode(1), new ConstantNode(2))],
+            [2, new ConditionalNode(new ConstantNode(false), new ConstantNode(1), new ConstantNode(2))],
+        ];
     }
 
     public function getCompileData()
     {
-        return array(
-            array('((true) ? (1) : (2))', new ConditionalNode(new ConstantNode(true), new ConstantNode(1), new ConstantNode(2))),
-            array('((false) ? (1) : (2))', new ConditionalNode(new ConstantNode(false), new ConstantNode(1), new ConstantNode(2))),
-        );
+        return [
+            ['((true) ? (1) : (2))', new ConditionalNode(new ConstantNode(true), new ConstantNode(1), new ConstantNode(2))],
+            ['((false) ? (1) : (2))', new ConditionalNode(new ConstantNode(false), new ConstantNode(1), new ConstantNode(2))],
+        ];
     }
 
     public function getDumpData()
     {
-        return array(
-            array('(true ? 1 : 2)', new ConditionalNode(new ConstantNode(true), new ConstantNode(1), new ConstantNode(2))),
-            array('(false ? 1 : 2)', new ConditionalNode(new ConstantNode(false), new ConstantNode(1), new ConstantNode(2))),
-        );
+        return [
+            ['(true ? 1 : 2)', new ConditionalNode(new ConstantNode(true), new ConstantNode(1), new ConstantNode(2))],
+            ['(false ? 1 : 2)', new ConditionalNode(new ConstantNode(false), new ConstantNode(1), new ConstantNode(2))],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConstantNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConstantNodeTest.php
index af79a91c5c9c..9add04f27e9f 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConstantNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConstantNodeTest.php
@@ -17,44 +17,44 @@ class ConstantNodeTest extends AbstractNodeTest
 {
     public function getEvaluateData()
     {
-        return array(
-            array(false, new ConstantNode(false)),
-            array(true, new ConstantNode(true)),
-            array(null, new ConstantNode(null)),
-            array(3, new ConstantNode(3)),
-            array(3.3, new ConstantNode(3.3)),
-            array('foo', new ConstantNode('foo')),
-            array(array(1, 'b' => 'a'), new ConstantNode(array(1, 'b' => 'a'))),
-        );
+        return [
+            [false, new ConstantNode(false)],
+            [true, new ConstantNode(true)],
+            [null, new ConstantNode(null)],
+            [3, new ConstantNode(3)],
+            [3.3, new ConstantNode(3.3)],
+            ['foo', new ConstantNode('foo')],
+            [[1, 'b' => 'a'], new ConstantNode([1, 'b' => 'a'])],
+        ];
     }
 
     public function getCompileData()
     {
-        return array(
-            array('false', new ConstantNode(false)),
-            array('true', new ConstantNode(true)),
-            array('null', new ConstantNode(null)),
-            array('3', new ConstantNode(3)),
-            array('3.3', new ConstantNode(3.3)),
-            array('"foo"', new ConstantNode('foo')),
-            array('array(0 => 1, "b" => "a")', new ConstantNode(array(1, 'b' => 'a'))),
-        );
+        return [
+            ['false', new ConstantNode(false)],
+            ['true', new ConstantNode(true)],
+            ['null', new ConstantNode(null)],
+            ['3', new ConstantNode(3)],
+            ['3.3', new ConstantNode(3.3)],
+            ['"foo"', new ConstantNode('foo')],
+            ['array(0 => 1, "b" => "a")', new ConstantNode([1, 'b' => 'a'])],
+        ];
     }
 
     public function getDumpData()
     {
-        return array(
-            array('false', new ConstantNode(false)),
-            array('true', new ConstantNode(true)),
-            array('null', new ConstantNode(null)),
-            array('3', new ConstantNode(3)),
-            array('3.3', new ConstantNode(3.3)),
-            array('"foo"', new ConstantNode('foo')),
-            array('foo', new ConstantNode('foo', true)),
-            array('{0: 1, "b": "a", 1: true}', new ConstantNode(array(1, 'b' => 'a', true))),
-            array('{"a\\"b": "c", "a\\\\b": "d"}', new ConstantNode(array('a"b' => 'c', 'a\\b' => 'd'))),
-            array('["c", "d"]', new ConstantNode(array('c', 'd'))),
-            array('{"a": ["b"]}', new ConstantNode(array('a' => array('b')))),
-        );
+        return [
+            ['false', new ConstantNode(false)],
+            ['true', new ConstantNode(true)],
+            ['null', new ConstantNode(null)],
+            ['3', new ConstantNode(3)],
+            ['3.3', new ConstantNode(3.3)],
+            ['"foo"', new ConstantNode('foo')],
+            ['foo', new ConstantNode('foo', true)],
+            ['{0: 1, "b": "a", 1: true}', new ConstantNode([1, 'b' => 'a', true])],
+            ['{"a\\"b": "c", "a\\\\b": "d"}', new ConstantNode(['a"b' => 'c', 'a\\b' => 'd'])],
+            ['["c", "d"]', new ConstantNode(['c', 'd'])],
+            ['{"a": ["b"]}', new ConstantNode(['a' => ['b']])],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/FunctionNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/FunctionNodeTest.php
index 3bddc5e5647e..c6cb02c1b9a4 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/FunctionNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/FunctionNodeTest.php
@@ -19,34 +19,34 @@ class FunctionNodeTest extends AbstractNodeTest
 {
     public function getEvaluateData()
     {
-        return array(
-            array('bar', new FunctionNode('foo', new Node(array(new ConstantNode('bar')))), array(), array('foo' => $this->getCallables())),
-        );
+        return [
+            ['bar', new FunctionNode('foo', new Node([new ConstantNode('bar')])), [], ['foo' => $this->getCallables()]],
+        ];
     }
 
     public function getCompileData()
     {
-        return array(
-            array('foo("bar")', new FunctionNode('foo', new Node(array(new ConstantNode('bar')))), array('foo' => $this->getCallables())),
-        );
+        return [
+            ['foo("bar")', new FunctionNode('foo', new Node([new ConstantNode('bar')])), ['foo' => $this->getCallables()]],
+        ];
     }
 
     public function getDumpData()
     {
-        return array(
-            array('foo("bar")', new FunctionNode('foo', new Node(array(new ConstantNode('bar')))), array('foo' => $this->getCallables())),
-        );
+        return [
+            ['foo("bar")', new FunctionNode('foo', new Node([new ConstantNode('bar')])), ['foo' => $this->getCallables()]],
+        ];
     }
 
     protected function getCallables()
     {
-        return array(
+        return [
             'compiler' => function ($arg) {
                 return sprintf('foo(%s)', $arg);
             },
             'evaluator' => function ($variables, $arg) {
                 return $arg;
             },
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/GetAttrNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/GetAttrNodeTest.php
index 750acaf93ee9..59ee98deb5f9 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/GetAttrNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/GetAttrNodeTest.php
@@ -20,41 +20,41 @@ class GetAttrNodeTest extends AbstractNodeTest
 {
     public function getEvaluateData()
     {
-        return array(
-            array('b', new GetAttrNode(new NameNode('foo'), new ConstantNode(0), $this->getArrayNode(), GetAttrNode::ARRAY_CALL), array('foo' => array('b' => 'a', 'b'))),
-            array('a', new GetAttrNode(new NameNode('foo'), new ConstantNode('b'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL), array('foo' => array('b' => 'a', 'b'))),
+        return [
+            ['b', new GetAttrNode(new NameNode('foo'), new ConstantNode(0), $this->getArrayNode(), GetAttrNode::ARRAY_CALL), ['foo' => ['b' => 'a', 'b']]],
+            ['a', new GetAttrNode(new NameNode('foo'), new ConstantNode('b'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL), ['foo' => ['b' => 'a', 'b']]],
 
-            array('bar', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::PROPERTY_CALL), array('foo' => new Obj())),
+            ['bar', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::PROPERTY_CALL), ['foo' => new Obj()]],
 
-            array('baz', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::METHOD_CALL), array('foo' => new Obj())),
-            array('a', new GetAttrNode(new NameNode('foo'), new NameNode('index'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL), array('foo' => array('b' => 'a', 'b'), 'index' => 'b')),
-        );
+            ['baz', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::METHOD_CALL), ['foo' => new Obj()]],
+            ['a', new GetAttrNode(new NameNode('foo'), new NameNode('index'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL), ['foo' => ['b' => 'a', 'b'], 'index' => 'b']],
+        ];
     }
 
     public function getCompileData()
     {
-        return array(
-            array('$foo[0]', new GetAttrNode(new NameNode('foo'), new ConstantNode(0), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)),
-            array('$foo["b"]', new GetAttrNode(new NameNode('foo'), new ConstantNode('b'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)),
+        return [
+            ['$foo[0]', new GetAttrNode(new NameNode('foo'), new ConstantNode(0), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)],
+            ['$foo["b"]', new GetAttrNode(new NameNode('foo'), new ConstantNode('b'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)],
 
-            array('$foo->foo', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::PROPERTY_CALL), array('foo' => new Obj())),
+            ['$foo->foo', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::PROPERTY_CALL), ['foo' => new Obj()]],
 
-            array('$foo->foo(array("b" => "a", 0 => "b"))', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::METHOD_CALL), array('foo' => new Obj())),
-            array('$foo[$index]', new GetAttrNode(new NameNode('foo'), new NameNode('index'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)),
-        );
+            ['$foo->foo(array("b" => "a", 0
341A
 => "b"))', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::METHOD_CALL), ['foo' => new Obj()]],
+            ['$foo[$index]', new GetAttrNode(new NameNode('foo'), new NameNode('index'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)],
+        ];
     }
 
     public function getDumpData()
     {
-        return array(
-            array('foo[0]', new GetAttrNode(new NameNode('foo'), new ConstantNode(0), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)),
-            array('foo["b"]', new GetAttrNode(new NameNode('foo'), new ConstantNode('b'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)),
+        return [
+            ['foo[0]', new GetAttrNode(new NameNode('foo'), new ConstantNode(0), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)],
+            ['foo["b"]', new GetAttrNode(new NameNode('foo'), new ConstantNode('b'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)],
 
-            array('foo.foo', new GetAttrNode(new NameNode('foo'), new NameNode('foo'), $this->getArrayNode(), GetAttrNode::PROPERTY_CALL), array('foo' => new Obj())),
+            ['foo.foo', new GetAttrNode(new NameNode('foo'), new NameNode('foo'), $this->getArrayNode(), GetAttrNode::PROPERTY_CALL), ['foo' => new Obj()]],
 
-            array('foo.foo({"b": "a", 0: "b"})', new GetAttrNode(new NameNode('foo'), new NameNode('foo'), $this->getArrayNode(), GetAttrNode::METHOD_CALL), array('foo' => new Obj())),
-            array('foo[index]', new GetAttrNode(new NameNode('foo'), new NameNode('index'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)),
-        );
+            ['foo.foo({"b": "a", 0: "b"})', new GetAttrNode(new NameNode('foo'), new NameNode('foo'), $this->getArrayNode(), GetAttrNode::METHOD_CALL), ['foo' => new Obj()]],
+            ['foo[index]', new GetAttrNode(new NameNode('foo'), new NameNode('index'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)],
+        ];
     }
 
     protected function getArrayNode()
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/NameNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/NameNodeTest.php
index 5fa2c37f29e6..a30c27b80489 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/NameNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/NameNodeTest.php
@@ -17,22 +17,22 @@ class NameNodeTest extends AbstractNodeTest
 {
     public function getEvaluateData()
     {
-        return array(
-            array('bar', new NameNode('foo'), array('foo' => 'bar')),
-        );
+        return [
+            ['bar', new NameNode('foo'), ['foo' => 'bar']],
+        ];
     }
 
     public function getCompileData()
     {
-        return array(
-            array('$foo', new NameNode('foo')),
-        );
+        return [
+            ['$foo', new NameNode('foo')],
+        ];
     }
 
     public function getDumpData()
     {
-        return array(
-            array('foo', new NameNode('foo')),
-        );
+        return [
+            ['foo', new NameNode('foo')],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/NodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/NodeTest.php
index 140f1521340d..351da05144bc 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/NodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/NodeTest.php
@@ -19,7 +19,7 @@ class NodeTest extends TestCase
 {
     public function testToString()
     {
-        $node = new Node(array(new ConstantNode('foo')));
+        $node = new Node([new ConstantNode('foo')]);
 
         $this->assertEquals(<<<'EOF'
 Node(
@@ -31,7 +31,7 @@ public function testToString()
 
     public function testSerialization()
     {
-        $node = new Node(array('foo' => 'bar'), array('bar' => 'foo'));
+        $node = new Node(['foo' => 'bar'], ['bar' => 'foo']);
 
         $serializedNode = serialize($node);
         $unserializedNode = unserialize($serializedNode);
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/UnaryNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/UnaryNodeTest.php
index ef072cb6ec5b..bac75d24dc27 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/UnaryNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/UnaryNodeTest.php
@@ -18,31 +18,31 @@ class UnaryNodeTest extends AbstractNodeTest
 {
     public function getEvaluateData()
     {
-        return array(
-            array(-1, new UnaryNode('-', new ConstantNode(1))),
-            array(3, new UnaryNode('+', new ConstantNode(3))),
-            array(false, new UnaryNode('!', new ConstantNode(true))),
-            array(false, new UnaryNode('not', new ConstantNode(true))),
-        );
+        return [
+            [-1, new UnaryNode('-', new ConstantNode(1))],
+            [3, new UnaryNode('+', new ConstantNode(3))],
+            [false, new UnaryNode('!', new ConstantNode(true))],
+            [false, new UnaryNode('not', new ConstantNode(true))],
+        ];
     }
 
     public function getCompileData()
     {
-        return array(
-            array('(-1)', new UnaryNode('-', new ConstantNode(1))),
-            array('(+3)', new UnaryNode('+', new ConstantNode(3))),
-            array('(!true)', new UnaryNode('!', new ConstantNode(true))),
-            array('(!true)', new UnaryNode('not', new ConstantNode(true))),
-        );
+        return [
+            ['(-1)', new UnaryNode('-', new ConstantNode(1))],
+            ['(+3)', new UnaryNode('+', new ConstantNode(3))],
+            ['(!true)', new UnaryNode('!', new ConstantNode(true))],
+            ['(!true)', new UnaryNode('not', new ConstantNode(true))],
+        ];
     }
 
     public function getDumpData()
     {
-        return array(
-            array('(- 1)', new UnaryNode('-', new ConstantNode(1))),
-            array('(+ 3)', new UnaryNode('+', new ConstantNode(3))),
-            array('(! true)', new UnaryNode('!', new ConstantNode(true))),
-            array('(not true)', new UnaryNode('not', new ConstantNode(true))),
-        );
+        return [
+            ['(- 1)', new UnaryNode('-', new ConstantNode(1))],
+            ['(+ 3)', new UnaryNode('+', new ConstantNode(3))],
+            ['(! true)', new UnaryNode('!', new ConstantNode(true))],
+            ['(not true)', new UnaryNode('not', new ConstantNode(true))],
+        ];
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/ParserCache/ParserCacheAdapterTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/ParserCache/ParserCacheAdapterTest.php
index 20fbe8024422..b75224c8a09e 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/ParserCache/ParserCacheAdapterTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/ParserCache/ParserCacheAdapterTest.php
@@ -47,7 +47,7 @@ public function testSave()
         $poolMock = $this->getMockBuilder('Symfony\Component\ExpressionLanguage\ParserCache\ParserCacheInterface')->getMock();
         $cacheItemMock = $this->getMockBuilder('Psr\Cache\CacheItemInterface')->getMock();
         $key = 'key';
-        $value = new ParsedExpression('1 + 1', new Node(array(), array()));
+        $value = new ParsedExpression('1 + 1', new Node([], []));
         $parserCacheAdapter = new ParserCacheAdapter($poolMock);
 
         $poolMock
@@ -112,7 +112,7 @@ public function testDeleteItem()
     public function testDeleteItems()
     {
         $poolMock = $this->getMockBuilder('Symfony\Component\ExpressionLanguage\ParserCache\ParserCacheInterface')->getMock();
-        $keys = array('key');
+        $keys = ['key'];
         $parserCacheAdapter = new ParserCacheAdapter($poolMock);
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}(\BadMethodCallException::class);
 
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/ParserTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/ParserTest.php
index 1e9ffba21e53..d030600fe8fe 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/ParserTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/ParserTest.php
@@ -25,7 +25,7 @@ class ParserTest extends TestCase
     public function testParseWithInvalidName()
     {
         $lexer = new Lexer();
-        $parser = new Parser(array());
+        $parser = new Parser([]);
         $parser->parse($lexer->tokenize('foo'));
     }
 
@@ -36,17 +36,17 @@ public function testParseWithInvalidName()
     public function testParseWithZeroInNames()
     {
         $lexer = new Lexer();
-        $parser = new Parser(array());
-        $parser->parse($lexer->tokenize('foo'), array(0));
+        $parser = new Parser([]);
+        $parser->parse($lexer->tokenize('foo'), [0]);
     }
 
     /**
      * @dataProvider getParseData
      */
-    public function testParse($node, $expression, $names = array())
+    public function testParse($node, $expression, $names = [])
     {
         $lexer = new Lexer();
-        $parser = new Parser(array());
+        $parser = new Parser([]);
         $this->assertEquals($node, $parser->parse($lexer->tokenize($expression), $names));
     }
 
@@ -57,63 +57,63 @@ public function getParseData()
         $arguments->addElement(new Node\ConstantNode(2));
         $arguments->addElement(new Node\ConstantNode(true));
 
-        return array(
-            array(
+        return [
+            [
                 new Node\NameNode('a'),
                 'a',
-                array('a'),
-            ),
-            array(
+                ['a'],
+            ],
+            [
                 new Node\ConstantNode('a'),
                 '"a"',
-            ),
-            array(
+            ],
+            [
                 new Node\ConstantNode(3),
                 '3',
-            ),
-            array(
+            ],
+            [
                 new Node\ConstantNode(false),
                 'false',
-            ),
-            array(
+            ],
+            [
                 new Node\ConstantNode(true),
                 'true',
-            ),
-            array(
+            ],
+            [
                 new Node\ConstantNode(null),
                 'null',
-            ),
-            array(
+            ],
+            [
                 new Node\UnaryNode('-', new Node\ConstantNode(3)),
                 '-3',
-            ),
-            array(
+            ],
+            [
                 new Node\BinaryNode('-', new Node\ConstantNode(3), new Node\ConstantNode(3)),
                 '3 - 3',
-            ),
-            array(
+            ],
+            [
                 new Node\BinaryNode('*',
                     new Node\BinaryNode('-', new Node\ConstantNode(3), new Node\ConstantNode(3)),
                     new Node\ConstantNode(2)
                 ),
                 '(3 - 3) * 2',
-            ),
-            array(
+            ],
+            [
                 new Node\GetAttrNode(new Node\NameNode('foo'), new Node\ConstantNode('bar', true), new Node\ArgumentsNode(), Node\GetAttrNode::PROPERTY_CALL),
                 'foo.bar',
-                array('foo'),
-            ),
-            array(
+                ['foo'],
+            ],
+            [
                 new Node\GetAttrNode(new Node\NameNode('foo'), new Node\ConstantNode('bar', true), new Node\ArgumentsNode(), Node\GetAttrNode::METHOD_CALL),
                 'foo.bar()',
-                array('foo'),
-            ),
-            array(
+                ['foo'],
+            ],
+            [
                 new Node\GetAttrNode(new Node\NameNode('foo'), new Node\ConstantNode('not', true), new Node\ArgumentsNode(), Node\GetAttrNode::METHOD_CALL),
                 'foo.not()',
-                array('foo'),
-            ),
-            array(
+                ['foo'],
+            ],
+            [
                 new Node\GetAttrNode(
                     new Node\NameNode('foo'),
                     new Node\ConstantNode('bar', true),
@@ -121,24 +121,24 @@ public function getParseData()
                     Node\GetAttrNode::METHOD_CALL
                 ),
                 'foo.bar("arg1", 2, true)',
-                array('foo'),
-            ),
-            array(
+                ['foo'],
+            ],
+            [
                 new Node\GetAttrNode(new Node\NameNode('foo'), new Node\ConstantNode(3), new Node\ArgumentsNode(), Node\GetAttrNode::ARRAY_CALL),
                 'foo[3]',
-                array('foo'),
-            ),
-            array(
+                ['foo'],
+            ],
+            [
                 new Node\ConditionalNode(new Node\ConstantNode(true), new Node\ConstantNode(true), new Node\ConstantNode(false)),
                 'true ? true : false',
-            ),
-            array(
+            ],
+            [
                 new Node\BinaryNode('matches', new Node\ConstantNode('foo'), new Node\ConstantNode('/foo/')),
                 '"foo" matches "/foo/"',
-            ),
+            ],
 
             // chained calls
-            array(
+            [
                 $this->createGetAttrNode(
                     $this->createGetAttrNode(
                         $this->createGetAttrNode(
@@ -147,15 +147,15 @@ public function getParseData()
                         'baz', Node\GetAttrNode::PROPE
F438
RTY_CALL),
                     '3', Node\GetAttrNode::ARRAY_CALL),
                 'foo.bar().foo().baz[3]',
-                array('foo'),
-            ),
+                ['foo'],
+            ],
 
-            array(
+            [
                 new Node\NameNode('foo'),
                 'bar',
-                array('foo' => 'bar'),
-            ),
-        );
+                ['foo' => 'bar'],
+            ],
+        ];
     }
 
     private function createGetAttrNode($node, $item, $type)
@@ -167,33 +167,33 @@ private function createGetAttrNode($node, $item, $type)
      * @dataProvider getInvalidPostfixData
      * @expectedException \Symfony\Component\ExpressionLanguage\SyntaxError
      */
-    public function testParseWithInvalidPostfixData($expr, $names = array())
+    public function testParseWithInvalidPostfixData($expr, $names = [])
     {
         $lexer = new Lexer();
-        $parser = new Parser(array());
+        $parser = new Parser([]);
         $parser->parse($lexer->tokenize($expr), $names);
     }
 
     public function getInvalidPostfixData()
     {
-        return array(
-            array(
+        return [
+            [
                 'foo."#"',
-                array('foo'),
-            ),
-            array(
+                ['foo'],
+            ],
+            [
                 'foo."bar"',
-                array('foo'),
-            ),
-            array(
+                ['foo'],
+            ],
+            [
                 'foo.**',
-                array('foo'),
-            ),
-            array(
+                ['foo'],
+            ],
+            [
                 'foo.123',
-                array('foo'),
-            ),
-        );
+                ['foo'],
+            ],
+        ];
     }
 
     /**
@@ -203,8 +203,8 @@ public function getInvalidPostfixData()
     public function testNameProposal()
     {
         $lexer = new Lexer();
-        $parser = new Parser(array());
+        $parser = new Parser([]);
 
-        $parser->parse($lexer->tokenize('foo > bar'), array('foo', 'baz'));
+        $parser->parse($lexer->tokenize('foo > bar'), ['foo', 'baz']);
     }
 }
diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 08151cbf8cfa..01872d92621f 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -58,7 +58,7 @@ public function copy($originFile, $targetFile, $overwriteNewerFiles = false)
             }
 
             // Stream context created to allow files overwrite when using FTP stream wrapper - disabled by default
-            if (false === $target = @fopen($targetFile, 'w', null, stream_context_create(array('ftp' => array('overwrite' => true))))) {
+            if (false === $target = @fopen($targetFile, 'w', null, stream_context_create(['ftp' => ['overwrite' => true]]))) {
                 throw new IOException(sprintf('Failed to copy "%s" to "%s" because target file could not be opened for writing.', $originFile, $targetFile), 0, null, $originFile);
             }
 
@@ -164,7 +164,7 @@ public function remove($files)
         if ($files instanceof \Traversable) {
             $files = iterator_to_array($files, false);
         } elseif (!\is_array($files)) {
-            $files = array($files);
+            $files = [$files];
         }
         $files = array_reverse($files);
         foreach ($files as $file) {
@@ -281,7 +281,7 @@ public function rename($origin, $target, $overwrite = false)
         if (true !== @rename($origin, $target)) {
             if (is_dir($origin)) {
                 // See https://bugs.php.net/bug.php?id=54097 & http://php.net/manual/en/function.rename.php#113943
-                $this->mirror($origin, $target, null, array('override' => $overwrite, 'delete' => $overwrite));
+                $this->mirror($origin, $target, null, ['override' => $overwrite, 'delete' => $overwrite]);
                 $this->remove($origin);
 
                 return;
@@ -471,7 +471,7 @@ public function makePathRelative($endPath, $startPath)
         $endPathArr = explode('/', trim($endPath, '/'));
 
         $normalizePathArray = function ($pathSegments, $absolute) {
-            $result = array();
+            $result = [];
 
             foreach ($pathSegments as $segment) {
                 if ('..' === $segment && ($absolute || \count($result))) {
@@ -530,7 +530,7 @@ public function makePathRelative($endPath, $startPath)
      *
      * @throws IOException When file type is unknown
      */
-    public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = array())
+    public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = [])
     {
         $targetDir = rtrim($targetDir, '/\\');
         $originDir = rtrim($originDir, '/\\');
@@ -726,7 +726,7 @@ public function appendToFile($filename, $content)
      */
     private function toIterable($files)
     {
-        return \is_array($files) || $files instanceof \Traversable ? $files : array($files);
+        return \is_array($files) || $files instanceof \Traversable ? $files : [$files];
     }
 
     /**
@@ -740,7 +740,7 @@ private function getSchemeAndHierarchy($filename)
     {
         $components = explode('://', $filename, 2);
 
-        return 2 === \count($components) ? array($components[0], $components[1]) : array(null, $components[0]);
+        return 2 === \count($components) ? [$components[0], $components[1]] : [null, $components[0]];
     }
 
     private static function box($func)
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index df8b8124f99a..8f2bde2e36ee 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -197,9 +197,9 @@ public function testMkdirCreatesDirectoriesRecursively()
     public function testMkdirCreatesDirectoriesFromArray()
     {
         $basePath = $this->workspace.\DIRECTORY_SEPARATOR;
-        $directories = array(
+        $directories = [
             $basePath.'1', $basePath.'2', $basePath.'3',
-        );
+        ];
 
         $this->filesystem->mkdir($directories);
 
@@ -211,9 +211,9 @@ public function testMkdirCreatesDirectoriesFromArray()
     public function testMkdirCreatesDirectoriesFromTraversableObject()
     {
         $basePath = $this->workspace.\DIRECTORY_SEPARATOR;
-        $directories = new \ArrayObject(array(
+        $directories = new \ArrayObject([
             $basePath.'1', $basePath.'2', $basePath.'3',
-        ));
+        ]);
 
         $this->filesystem->mkdir($directories);
 
@@ -257,9 +257,9 @@ public function testTouchFails()
     public function testTouchCreatesEmptyFilesFromArray()
     {
         $basePath = $this->workspace.\DIRECTORY_SEPARATOR;
-        $files = array(
+        $files = [
             $basePath.'1', $basePath.'2', $basePath.'3',
-        );
+        ];
 
         $this->filesystem->touch($files);
 
@@ -271,9 +271,9 @@ public function testTouchCreatesEmptyFilesFromArray()
     public function testTouchCreatesEmptyFilesFromTraversableObject()
     {
         $basePath = $this->workspace.\DIRECTORY_SEPARATOR;
-        $files = new \ArrayObject(array(
+        $files = new \ArrayObject([
             $basePath.'1', $basePath.'2', $basePath.'3',
-        ));
+        ]);
 
         $this->filesystem->touch($files);
 
@@ -302,9 +302,9 @@ public function testRemoveCleansArrayOfFilesAndDirectories()
         mkdir($basePath.'dir');
         touch($basePath.'file');
 
-        $files = array(
+        $files = [
             $basePath.'dir', $basePath.'file',
-        );
+        ];
 
         $this->filesystem->remove($files);
 
@@ -319,9 +319,9 @@ public function testRemoveCleansTraversableObjectOfFilesAndDirectories()
         mkdir($basePath.'dir');
         touch($basePath.'file');
 
-        $files = new \ArrayObject(array(
+        $files = new \ArrayObject([
             $basePath.'dir', $basePath.'file',
-        ));
+        ]);
 
         $this->filesystem->remove($files);
 
@@ -335,9 +335,9 @@ public function testRemoveIgnoresNonExistingFiles()
 
         mkdir($basePath.'dir');
 
-        $files = array(
+        $files = [
             $basePath.'dir', $basePath.'file',
-        );
+        ];
 
         $this->filesystem->remove($files);
 
@@ -409,9 +409,9 @@ public function testFilesExistsTraversableObjectOfFilesAndDirectories()
         mkdir($basePath.'dir');
         touch($basePath.'file');
 
-        $files = new \ArrayObject(array(
+        $files = new \ArrayObject([
             $basePath.'dir', $basePath.'file',
-        ));
+        ]);
 
         $this->assertTrue($this->filesystem->exists($files));
     }
@@ -424,9 +424,9 @@ public function testFilesNotExistsTraversableObjectOfFilesAndDirectories()
         touch($basePath.'file');
         touch($basePath.'file2');
 
-        $files = new \ArrayObject(array(
+        $files = new \ArrayObject([
             $basePath.'dir', $basePath.'file', $basePath.'file2',
-        ));
+        ]);
 
         unlink($basePath.'file');
 
@@ -507,7 +507,7 @@ public function testChmodChangesModeOfArrayOfFiles()
 
         $directory = $this->workspace.\DIRECTORY_SEPARATOR.'directory';
         $file = $this->workspace.\DIRECTORY_SEPARATOR.'file';
-        $files = array($directory, $file);
+        $files = [$directory, $file];
 
         mkdir($directory);
         touch($file);
@@ -524,7 +524,7 @@ public function testChmodChangesModeOfTraversableFileObject()
 
         $directory = $this->workspace.\DIRECTORY_SEPARATOR.'directory';
         $file = $this->workspace.\DIRECTORY_SEPARATOR.'file';
-        $files = new \ArrayObject(array($directory, $file));
+        $files = new \ArrayObject([$directory, $file]);
 
         mkdir($directory);
         touch($file);
@@ -979,7 +979,7 @@ public function testLinkWithSeveralTargets()
 
         touch($file);
 
-        $this->filesystem->hardlink($file, array($link1, $link2));
+        $this->filesystem->hardlink($file, [$link1, $link2]);
 
         $this->assertTrue(is_file($link1));
         $this->assertEquals(fileinode($file), fileinode($link1));
@@ -997,7 +997,7 @@ public function testLinkWithSameTarget()
         touch($file);
 
         // practically same as testLinkIsNotOverwrittenIfAlreadyCreated
-        $this->filesystem->hardlink($file, array($link, $link));
+        $this->filesystem->hardlink($file, [$link, $link]);
 
         $this->assertTrue(is_file($link));
         $this->assertEquals(fileinode($file), fileinode($link));
@@ -1106,47 +1106,47 @@ public function testMakePathRelative($endPath, $startPath, $expectedPath)
 
     public function providePathsForMakePathRelative()
     {
-        $paths = array(
-            array('/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component', '../'),
-            array('/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component/', '../'),
-            array('/var/lib/symfony/src/Symfony', '/var/lib/symfony/src/Symfony/Component', '../'),
-            array('/var/lib/symfony/src/Symfony', '/var/lib/symfony/src/Symfony/Component/', '../'),
-            array('/usr/lib/symfony/', '/var/lib/symfony/src/Symfony/Component', '../../../../../../usr/lib/symfony/'),
-            array('/var/lib/symfony/src/Symfony/', '/var/lib/symfony/', 'src/Symfony/'),
-            array('/aa/bb', '/aa/bb', './'),
-            array('/aa/bb', '/aa/bb/', './'),
-            array('/aa/bb/', '/aa/bb', './'),
-            array('/aa/bb/', '/aa/bb/', './'),
-            array('/aa/bb/cc', '/aa/bb/cc/dd', '../'),
-            array('/aa/bb/cc', '/aa/bb/cc/dd/', '../'),
-            array('/aa/bb/cc/', '/aa/bb/cc/dd', '../'),
-            array('/aa/bb/cc/', '/aa/bb/cc/dd/', '../'),
-            array('/aa/bb/cc', '/aa', 'bb/cc/'),
-            array('/aa/bb/cc', '/aa/', 'bb/cc/'),
-            array('/aa/bb/cc/', '/aa', 'bb/cc/'),
-            array('/aa/bb/cc/', '/aa/', 'bb/cc/'),
-            array('/a/aab/bb', '/a/aa', '../aab/bb/'),
-            array('/a/aab/bb', '/a/aa/', '../aab/bb/'),
-            array('/a/aab/bb/', '/a/aa', '../aab/bb/'),
-            array('/a/aab/bb/', '/a/aa/', '../aab/bb/'),
-            array('/a/aab/bb/', '/', 'a/aab/bb/'),
-            array('/a/aab/bb/', '/b/aab', '../../a/aab/bb/'),
-            array('/aab/bb', '/aa', '../aab/bb/'),
-            array('/aab', '/aa', '../aab/'),
-            array('/aa/bb/cc', '/aa/dd/..', 'bb/cc/'),
-            array('/aa/../bb/cc', '/aa/dd/..', '../bb/cc/'),
-            array('/aa/bb/../../cc', '/aa/../dd/..', 'cc/'),
-            array('/../aa/bb/cc', '/aa/dd/..', 'bb/cc/'),
-            array('/../../aa/../bb/cc', '/aa/dd/..', '../bb/cc/'),
-            array('C:/aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'),
-            array('c:/aa/../bb/cc', 'c:/aa/dd/..', '../bb/cc/'),
-            array('C:/aa/bb/../../cc', 'C:/aa/../dd/..', 'cc/'),
-            array('C:/../aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'),
-            array('C:/../../aa/../bb/cc', 'C:/aa/dd/..', '../bb/cc/'),
-        );
+        $paths = [
+            ['/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component', '../'],
+            ['/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component/', '../'],
+            ['/var/lib/symfony/src/Symfony', '/var/lib/symfony/src/Symfony/Component', '../'],
+            ['/var/lib/symfony/src/Symfony', '/var/lib/symfony/src/Symfony/Component/', '../'],
+            ['/usr/lib/symfony/', '/var/lib/symfony/src/Symfony/Component', '../../../../../../usr/lib/symfony/'],
+            ['/var/lib/symfony/src/Symfony/', '/var/lib/symfony/', 'src/Symfony/'],
+            ['/aa/bb', '/aa/bb', './'],
+            ['/aa/bb', '/aa/bb/', './'],
+            ['/aa/bb/', '/aa/bb', './'],
+            ['/aa/bb/', '/aa/bb/', './'],
+            ['/aa/bb/cc', '/aa/bb/cc/dd', '../'],
+            ['/aa/bb/cc', '/aa/bb/cc/dd/', '../'],
+            ['/aa/bb/cc/', '/aa/bb/cc/dd', '../'],
+            ['/aa/bb/cc/', '/aa/bb/cc/dd/', '../'],
+            ['/aa/bb/cc', '/aa', 'bb/cc/'],
+            ['/aa/bb/cc', '/aa/', 'bb/cc/'],
+            ['/aa/bb/cc/', '/aa', 'bb/cc/'],
+            ['/aa/bb/cc/', '/aa/', 'bb/cc/'],
+            ['/a/aab/bb', '/a/aa', '../aab/bb/'],
+            ['/a/aab/bb', '/a/aa/', '../aab/bb/'],
+            ['/a/aab/bb/', '/a/aa', '../aab/bb/'],
+            ['/a/aab/bb/', '/a/aa/', '../aab/bb/'],
+            ['/a/aab/bb/', '/', 'a/aab/bb/'],
+            ['/a/aab/bb/', '/b/aab', '../../a/aab/bb/'],
+            ['/aab/bb', '/aa', '../aab/bb/'],
+            ['/aab', '/aa', '../aab/'],
+            ['/aa/bb/cc', '/aa/dd/..', 'bb/cc/'],
+            ['/aa/../bb/cc', '/aa/dd/..', '../bb/cc/'],
+            ['/aa/bb/../../cc', '/aa/../dd/..', 'cc/'],
+            ['/../aa/bb/cc', '/aa/dd/..', 'bb/cc/'],
+            ['/../../aa/../bb/cc', '/aa/dd/..', '../bb/cc/'],
+            ['C:/aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'],
+            ['c:/aa/../bb/cc', 'c:/aa/dd/..', '../bb/cc/'],
+            ['C:/aa/bb/../../cc', 'C:/aa/../dd/..', 'cc/'],
+            ['C:/../aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'],
+            ['C:/../../aa/../bb/cc', 'C:/aa/dd/..', '../bb/cc/'],
+        ];
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
-            $paths[] = array('c:\var\lib/symfony/src/Symfony/', 'c:/var/lib/symfony/', 'src/Symfony/');
+            $paths[] = ['c:\var\lib/symfony/src/Symfony/', 'c:/var/lib/symfony/', 'src/Symfony/'];
         }
 
         return $paths;
@@ -1166,20 +1166,20 @@ public function testMakePathRelativeWithRelativePaths($endPath, $startPath, $exp
 
     public function provideLegacyPathsForMakePathRelativeWithRelativePaths()
     {
-        return array(
-            array('usr/lib/symfony/', 'var/lib/symfony/src/Symfony/Component', '../../../../../../usr/lib/symfony/'),
-            array('aa/bb', 'aa/cc', '../bb/'),
-            array('aa/cc', 'bb/cc', '../../aa/cc/'),
-            array('aa/bb', 'aa/./cc', '../bb/'),
-            array('aa/./bb', 'aa/cc', '../bb/'),
-            array('aa/./bb', 'aa/./cc', '../bb/'),
-            array('../../', '../../', './'),
-            array('../aa/bb/', 'aa/bb/', '../../../aa/bb/'),
-            array('../../../', '../../', '../'),
-            array('', '', './'),
-            array('', 'aa/', '../'),
-            array('aa/', '', 'aa/'),
-        );
+        return [
+            ['usr/lib/symfony/', 'var/lib/symfony/src/Symfony/Component', '../../../../../../usr/lib/symfony/'],
+            ['aa/bb', 'aa/cc', '../bb/'],
+            ['aa/cc', 'bb/cc', '../../aa/cc/'],
+            ['aa/bb', 'aa/./cc', '../bb/'],
+            ['aa/./bb', 'aa/cc', '../bb/'],
+            ['aa/./bb', 'aa/./cc', '../bb/'],
+            ['../../', '../../', './'],
+            ['../aa/bb/', 'aa/bb/', '../../../aa/bb/'],
+            ['../../../', '../../', '../'],
+            ['', '', './'],
+            ['', 'aa/', '../'],
+            ['aa/', '', 'aa/'],
+        ];
     }
 
     public function testMirrorCopiesFilesAndDirectoriesRecursively()
@@ -1205,19 +1205,19 @@ public function testMirrorCopiesFilesAndDirectoriesRecursively()
 
         $this->filesystem->remove($file1);
 
-        $this->filesystem->mirror($sourcePath, $targetPath, null, array('delete' => false));
+        $this->filesystem->mirror($sourcePath, $targetPath, null, ['delete' => false]);
         $this->assertTrue($this->filesystem->exists($targetPath.'directory'.\DIRECTORY_SEPARATOR.'file1'));
 
-        $this->filesystem->mirror($sourcePath, $targetPath, null, array('delete' => true));
+        $this->filesystem->mirror($sourcePath, $targetPath, null, ['delete' => true]);
         $this->assertFalse($this->filesystem->exists($targetPath.'directory'.\DIRECTORY_SEPARATOR.'file1'));
 
         file_put_contents($file1, 'FILE1');
 
-        $this->filesystem->mirror($sourcePath, $targetPath, null, array('delete' => true));
+        $this->filesystem->mirror($sourcePath, $targetPath, null, ['delete' => true]);
         $this->assertTrue($this->filesystem->exists($targetPath.'directory'.\DIRECTORY_SEPARATOR.'file1'));
 
         $this->filesystem->remove($directory);
-        $this->filesystem->mirror($sourcePath, $targetPath, null, array('delete' => true));
+        $this->filesystem->mirror($sourcePath, $targetPath, null, ['delete' => true]);
         $this->assertFalse($this->filesystem->exists($targetPath.'directory'));
         $this->assertFalse($this->filesystem->exists($targetPath.'directory'.\DIRECTORY_SEPARATOR.'file1'));
     }
@@ -1339,7 +1339,7 @@ public function testMirrorContentsWithSameNameAsSourceOrTargetWithDeleteOption()
         $oldPath = getcwd();
         chdir($this->workspace);
 
-        $this->filesystem->mirror('source', 'target', null, array('delete' => true));
+        $this->filesystem->mirror('source', 'target', null, ['delete' => true]);
 
         chdir($oldPath);
 
@@ -1360,15 +1360,15 @@ public function testIsAbsolutePath($path, $expectedResult)
 
     public function providePathsForIsAbsolutePath()
     {
-        return array(
-            array('/var/lib', true),
-            array('c:\\\\var\\lib', true),
-            array('\\var\\lib', true),
-            array('var/lib', false),
-            array('../var/lib', false),
-            array('', false),
-            array(null, false),
-        );
+        return [
+            ['/var/lib', true],
+            ['c:\\\\var\\lib', true],
+            ['\\var\\lib', true],
+            ['var/lib', false],
+            ['../var/lib', false],
+            ['', false],
+            [null, false],
+        ];
     }
 
     public function testTempnam()
@@ -1498,7 +1498,7 @@ public function testDumpFileWithArray()
     {
         $filename = $this->workspace.\DIRECTORY_SEPARATOR.'foo'.\DIRECTORY_SEPARATOR.'baz.txt';
 
-        $this->filesystem->dumpFile($filename, array('bar'));
+        $this->filesystem->dumpFile($filename, ['bar']);
 
         $this->assertFileExists($filename);
         $this->assertStringEqualsFile($filename, 'bar');
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTestCase.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTestCase.php
index 642925ddee57..eb6b35ddfd62 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTestCase.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTestCase.php
@@ -18,7 +18,7 @@ class FilesystemTestCase extends TestCase
 {
     private $umask;
 
-    protected $longPathNamesWindows = array();
+    protected $longPathNamesWindows = [];
 
     /**
      * @var \Symfony\Component\Filesystem\Filesystem
@@ -84,7 +84,7 @@ protected function tearDown()
             foreach ($this->longPathNamesWindows as $path) {
                 exec('DEL '.$path);
             }
-            $this->longPathNamesWindows = array();
+            $this->longPathNamesWindows = [];
         }
 
         $this->filesystem->remove($this->workspace);
diff --git a/src/Symfony/Component/Filesystem/Tests/Fixtures/MockStream/MockStream.php b/src/Symfony/Component/Filesystem/Tests/Fixtures/MockStream/MockStream.php
index f14420fb60a1..3d80a90582ce 100644
--- a/src/Symfony/Component/Filesystem/Tests/Fixtures/MockStream/MockStream.php
+++ b/src/Symfony/Component/Filesystem/Tests/Fixtures/MockStream/MockStream.php
@@ -41,6 +41,6 @@ public function stream_open($path, $mode, $options, &$opened_path)
      */
     public function url_stat($path, $flags)
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Finder/Comparator/Comparator.php b/src/Symfony/Component/Finder/Comparator/Comparator.php
index ea37566df888..6aee21cf0929 100644
--- a/src/Symfony/Component/Finder/Comparator/Comparator.php
+++ b/src/Symfony/Component/Finder/Comparator/Comparator.php
@@ -64,7 +64,7 @@ public function setOperator($operator)
             $operator = '==';
         }
 
-        if (!\in_array($operator, array('>', '<', '>=', '<=', '==', '!='))) {
+        if (!\in_array($operator, ['>', '<', '>=', '<=', '==', '!='])) {
             throw new \InvalidArgumentException(sprintf('Invalid operator "%s".', $operator));
         }
 
diff --git a/src/Symfony/Component/Finder/Finder.php b/src/Symfony/Component/Finder/Finder.php
index 050162970113..f03882bba1de 100644
--- a/src/Symfony/Component/Finder/Finder.php
+++ b/src/Symfony/Component/Finder/Finder.php
@@ -41,25 +41,25 @@ class Finder implements \IteratorAggregate, \Countable
     const IGNORE_DOT_FILES = 2;
 
     private $mode = 0;
-    private $names = array();
-    private $notNames = array();
-    private $exclude = array();
-    private $filters = array();
-    private $depths = array();
-    private $sizes = array();
+    private $names = [];
+    private $notNames = [];
+    private $exclude = [];
+    private $filters = [];
+    private $depths = [];
+    private $sizes = [];
     private $followLinks = false;
     private $sort = false;
     private $ignore = 0;
-    private $dirs = array();
-    private $dates = array();
-    private $iterators = array();
-    private $contains = array();
-    private $notContains = array();
-    private $paths = array();
-    private $notPaths = array();
+    private $dirs = [];
+    private $dates = [];
+    private $iterators = [];
+    private $contains = [];
+    private $notContains = [];
+    private $paths = [];
+    private $notPaths = [];
     private $ignoreUnreadableDirs = false;
 
-    private static $vcsPatterns = array('.svn', '_svn', 'CVS', '_darcs', '.arch-params', '.monotone', '.bzr', '.git', '.hg');
+    private static $vcsPatterns = ['.svn', '_svn', 'CVS', '_darcs', '.arch-params', '.monotone', '.bzr', '.git', '.hg'];
 
     public function __construct()
     {
@@ -536,13 +536,13 @@ public function ignoreUnreadableDirs($ignore = true)
      */
     public function in($dirs)
     {
-        $resolvedDirs = array();
+        $resolvedDirs = [];
 
         foreach ((array) $dirs as $dir) {
             if (is_dir($dir)) {
                 $resolvedDirs[] = $this->normalizeDir($dir);
             } elseif ($glob = glob($dir, (\defined('GLOB_BRACE') ? GLOB_BRACE : 0) | GLOB_ONLYDIR)) {
-                $resolvedDirs = array_merge($resolvedDirs, array_map(array($this, 'normalizeDir'), $glob));
+                $resolvedDirs = array_merge($resolvedDirs, array_map([$this, 'normalizeDir'], $glob));
             } else {
                 throw new \InvalidArgumentException(sprintf('The "%s" directory does not exist.', $dir));
             }
diff --git a/src/Symfony/Component/Finder/Iterator/CustomFilterIterator.php b/src/Symfony/Component/Finder/Iterator/CustomFilterIterator.php
index 6666e07ec54b..896f7e912f08 100644
--- a/src/Symfony/Component/Finder/Iterator/CustomFilterIterator.php
+++ b/src/Symfony/Component/Finder/Iterator/CustomFilterIterator.php
@@ -21,7 +21,7 @@
  */
 class CustomFilterIterator extends FilterIterator
 {
-    private $filters = array();
+    private $filters = [];
 
     /**
      * @param \Iterator  $iterator The Iterator to filter
diff --git a/src/Symfony/Component/Finder/Iterator/DateRangeFilterIterator.php b/src/Symfony/Component/Finder/Iterator/DateRangeFilterIterator.php
index b01e5e3f5d88..8a47321a3c37 100644
--- a/src/Symfony/Component/Finder/Iterator/DateRangeFilterIterator.php
+++ b/src/Symfony/Component/Finder/Iterator/DateRangeFilterIterator.php
@@ -20,7 +20,7 @@
  */
 class DateRangeFilterIterator extends FilterIterator
 {
-    private $comparators = array();
+    private $comparators = [];
 
     /**
      * @param \Iterator        $iterator    The Iterator to filter
diff --git a/src/Symfony/Component/Finder/Iterator/ExcludeDirectoryFilterIterator.php b/src/Symfony/Component/Finder/Iterator/ExcludeDirectoryFilterIterator.php
index c57128c27849..bc0e6fc1e1a9 100644
--- a/src/Symfony/Component/Finder/Iterator/ExcludeDirectoryFilterIterator.php
+++ b/src/Symfony/Component/Finder/Iterator/ExcludeDirectoryFilterIterator.php
@@ -20,7 +20,7 @@ class ExcludeDirectoryFilterIterator extends FilterIterator implements \Recursiv
 {
     private $iterator;
     private $isRecursive;
-    private $excludedDirs = array();
+    private $excludedDirs = [];
     private $excludedPattern;
 
     /**
@@ -31,7 +31,7 @@ public function __construct(\Iterator $iterator, array $directories)
     {
         $this->iterator = $iterator;
         $this->isRecursive = $iterator instanceof \RecursiveIterator;
-        $patterns = array();
+        $patterns = [];
         foreach ($directories as $directory) {
             $directory = rtrim($directory, '/');
             if (!$this->isRecursive || false !== strpos($directory, '/')) {
@@ -75,7 +75,7 @@ public function hasChildren()
 
     public function getChildren()
     {
-        $children = new self($this->iterator->getChildren(), array());
+        $children = new self($this->iterator->getChildren(), []);
         $children->excludedDirs = $this->excludedDirs;
         $children->excludedPattern = $this->excludedPattern;
 
diff --git a/src/Symfony/Component/Finder/Iterator/MultiplePcreFilterIterator.php b/src/Symfony/Component/Finder/Iterator/MultiplePcreFilterIterator.php
index fc8854047e34..ee365a58b084 100644
--- a/src/Symfony/Component/Finder/Iterator/MultiplePcreFilterIterator.php
+++ b/src/Symfony/Component/Finder/Iterator/MultiplePcreFilterIterator.php
@@ -18,8 +18,8 @@
  */
 abstract class MultiplePcreFilterIterator extends FilterIterator
 {
-    protected $matchRegexps = array();
-    protected $noMatchRegexps = array();
+    protected $matchRegexps = [];
+    protected $noMatchRegexps = [];
 
     /**
      * @param \Iterator $iterator        The Iterator to filter
@@ -91,7 +91,7 @@ protected function isRegex($str)
                 return !preg_match('/[*?[:alnum:] \\\\]/', $start);
             }
 
-            foreach (array(array('{', '}'), array('(', ')'), array('[', ']'), array('<', '>')) as $delimiters) {
+            foreach ([['{', '}'], ['(', ')'], ['[', ']'], ['<', '>']] as $delimiters) {
                 if ($start === $delimiters[0] && $end === $delimiters[1]) {
                     return true;
                 }
diff --git a/src/Symfony/Component/Finder/Iterator/RecursiveDirectoryIterator.php b/src/Symfony/Component/Finder/Iterator/RecursiveDirectoryIterator.php
index 3e6ef86ade59..ab48a2b8a174 100644
--- a/src/Symfony/Component/Finder/Iterator/RecursiveDirectoryIterator.php
+++ b/src/Symfony/Component/Finder/Iterator/RecursiveDirectoryIterator.php
@@ -100,7 +100,7 @@ public function getChildren()
         } catch (\UnexpectedValueException $e) {
             if ($this->ignoreUnreadableDirs) {
                 // If directory is unreadable and finder is set to ignore it, a fake empty content is returned.
-                return new \RecursiveArrayIterator(array());
+                return new \RecursiveArrayIterator([]);
             } else {
                 throw new AccessDeniedException($e->getMessage(), $e->getCode(), $e);
             }
diff --git a/src/Symfony/Component/Finder/Iterator/SizeRangeFilterIterator.php b/src/Symfony/Component/Finder/Iterator/SizeRangeFilterIterator.php
index bd1a7fb70048..4e521c8c9040 100644
--- a/src/Symfony/Component/Finder/Iterator/SizeRangeFilterIterator.php
+++ b/src/Symfony/Component/Finder/Iterator/SizeRangeFilterIterator.php
@@ -20,7 +20,7 @@
  */
 class SizeRangeFilterIterator extends FilterIterator
 {
-    private $comparators = array();
+    private $comparators = [];
 
     /**
      * @param \Iterator          $iterator    The Iterator to filter
diff --git a/src/Symfony/Component/Finder/Tests/Comparator/ComparatorTest.php b/src/Symfony/Component/Finder/Tests/Comparator/ComparatorTest.php
index 656fc57a4bc4..2f56092ed876 100644
--- a/src/Symfony/Component/Finder/Tests/Comparator/ComparatorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Comparator/ComparatorTest.php
@@ -58,8 +58,8 @@ public function testTest($operator, $target, $match, $noMatch)
 
     public function getTestData()
     {
-        return array(
-            array('<', '1000', array('500', '999'), array('1000', '1500')),
-        );
+        return [
+            ['<', '1000', ['500', '999'], ['1000', '1500']],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Comparator/DateComparatorTest.php b/src/Symfony/Component/Finder/Tests/Comparator/DateComparatorTest.php
index 8a6c1ddfd19e..3aebf524499f 100644
--- a/src/Symfony/Component/Finder/Tests/Comparator/DateComparatorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Comparator/DateComparatorTest.php
@@ -51,14 +51,14 @@ public function testTest($test, $match, $noMatch)
 
     public function getTestData()
     {
-        return array(
-            array('< 2005-10-10', array(strtotime('2005-10-09')), array(strtotime('2005-10-15'))),
-            array('until 2005-10-10', array(strtotime('2005-10-09')), array(strtotime('2005-10-15'))),
-            array('before 2005-10-10', array(strtotime('2005-10-09')), array(strtotime('2005-10-15'))),
-            array('> 2005-10-10', array(strtotime('2005-10-15')), array(strtotime('2005-10-09'))),
-            array('after 2005-10-10', array(strtotime('2005-10-15')), array(strtotime('2005-10-09'))),
-            array('since 2005-10-10', array(strtotime('2005-10-15')), array(strtotime('2005-10-09'))),
-            array('!= 2005-10-10', array(strtotime('2005-10-11')), array(strtotime('2005-10-10'))),
-        );
+        return [
+            ['< 2005-10-10', [strtotime('2005-10-09')], [strtotime('2005-10-15')]],
+            ['until 2005-10-10', [strtotime('2005-10-09')], [strtotime('2005-10-15')]],
+            ['before 2005-10-10', [strtotime('2005-10-09')], [strtotime('2005-10-15')]],
+            ['> 2005-10-10', [strtotime('2005-10-15')], [strtotime('2005-10-09')]],
+            ['after 2005-10-10', [strtotime('2005-10-15')], [strtotime('2005-10-09')]],
+            ['since 2005-10-10', [strtotime('2005-10-15')], [strtotime('2005-10-09')]],
+            ['!= 2005-10-10', [strtotime('2005-10-11')], [strtotime('2005-10-10')]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Comparator/NumberComparatorTest.php b/src/Symfony/Component/Finder/Tests/Comparator/NumberComparatorTest.php
index 30a75c738c5a..5b49b660a776 100644
--- a/src/Symfony/Component/Finder/Tests/Comparator/NumberComparatorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Comparator/NumberComparatorTest.php
@@ -53,39 +53,39 @@ public function testTest($test, $match, $noMatch)
 
     public function getTestData()
     {
-        return array(
-            array('< 1000', array('500', '999'), array('1000', '1500')),
+        return [
+            ['< 1000', ['500', '999'], ['1000', '1500']],
 
-            array('< 1K', array('500', '999'), array('1000', '1500')),
-            array('<1k', array('500', '999'), array('1000', '1500')),
-            array('  < 1 K ', array('500', '999'), array('1000', '1500')),
-            array('<= 1K', array('1000'), array('1001')),
-            array('> 1K', array('1001'), array('1000')),
-            array('>= 1K', array('1000'), array('999')),
+            ['< 1K', ['500', '999'], ['1000', '1500']],
+            ['<1k', ['500', '999'], ['1000', '1500']],
+            ['  < 1 K ', ['500', '999'], ['1000', '1500']],
+            ['<= 1K', ['1000'], ['1001']],
+            ['> 1K', ['1001'], ['1000']],
+            ['>= 1K', ['1000'], ['999']],
 
-            array('< 1KI', array('500', '1023'), array('1024', '1500')),
-            array('<= 1KI', array('1024'), array('1025')),
-            array('> 1KI', array('1025'), array('1024')),
-            array('>= 1KI', array('1024'), array('1023')),
+            ['< 1KI', ['500', '1023'], ['1024', '1500']],
+            ['<= 1KI', ['1024'], ['1025']],
+            ['> 1KI', ['1025'], ['1024']],
+            ['>= 1KI', ['1024'], ['1023']],
 
-            array('1KI', array('1024'), array('1023', '1025')),
-            array('==1KI', array('1024'), array('1023', '1025')),
+            ['1KI', ['1024'], ['1023', '1025']],
+            ['==1KI', ['1024'], ['1023', '1025']],
 
-            array('==1m', array('1000000'), array('999999', '1000001')),
-            array('==1mi', array(1024 * 1024), array(1024 * 1024 - 1, 1024 * 1024 + 1)),
+            ['==1m', ['1000000'], ['999999', '1000001']],
+            ['==1mi', [1024 * 1024], [1024 * 1024 - 1, 1024 * 1024 + 1]],
 
-            array('==1g', array('1000000000'), array('999999999', '1000000001')),
-            array('==1gi', array(1024 * 1024 * 1024), array(1024 * 1024 * 1024 - 1, 1024 * 1024 * 1024 + 1)),
+            ['==1g', ['1000000000'], ['999999999', '1000000001']],
+            ['==1gi', [1024 * 1024 * 1024], [1024 * 1024 * 1024 - 1, 1024 * 1024 * 1024 + 1]],
 
-            array('!= 1000', array('500', '999'), array('1000')),
-        );
+            ['!= 1000', ['500', '999'], ['1000']],
+        ];
     }
 
     public function getConstructorTestData()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     '1', '0',
                     '3.5', '33.55', '123.456', '123456.78',
                     '.1', '.123',
@@ -94,15 +94,15 @@ public function getConstructorTestData()
                     '==1', '!=1', '<1', '>1', '<=1', '>=1',
                     '==1k', '==1ki', '==1m', '==1mi', '==1g', '==1gi',
                     '1k', '1ki', '1m', '1mi', '1g', '1gi',
-                ),
-                array(
+                ],
+                [
                     false, null, '',
                     ' ', 'foobar',
                     '=1', '===1',
                     '0 . 1', '123 .45', '234. 567',
                     '..', '.0.', '0.1.2',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/FinderTest.php b/src/Symfony/Component/Finder/Tests/FinderTest.php
index f64919920e02..d309d23b1767 100644
--- a/src/Symfony/Component/Finder/Tests/FinderTest.php
+++ b/src/Symfony/Component/Finder/Tests/FinderTest.php
@@ -24,33 +24,33 @@ public function testDirectories()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->directories());
-        $this->assertIterator($this->toAbsolute(array('foo', 'toto')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'toto']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->directories();
         $finder->files();
         $finder->directories();
-        $this->assertIterator($this->toAbsolute(array('foo', 'toto')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'toto']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testFiles()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->files());
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp', 'test.php', 'test.py', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php', 'test.py', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->files();
         $finder->directories();
         $finder->files();
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp', 'test.php', 'test.py', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php', 'test.py', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testRemoveTrailingSlash()
     {
         $finder = $this->buildFinder();
 
-        $expected = $this->toAbsolute(array('foo/bar.tmp', 'test.php', 'test.py', 'foo bar'));
+        $expected = $this->toAbsolute(['foo/bar.tmp', 'test.php', 'test.py', 'foo bar']);
         $in = self::$tmpDir.'//';
 
         $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
@@ -65,7 +65,7 @@ public function testSymlinksNotResolved()
         $finder = $this->buildFinder();
 
         symlink($this->toAbsolute('foo'), $this->toAbsolute('baz'));
-        $expected = $this->toAbsolute(array('baz/bar.tmp'));
+        $expected = $this->toAbsolute(['baz/bar.tmp']);
         $in = self::$tmpDir.'/baz/';
         try {
             $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
@@ -80,7 +80,7 @@ public function testBackPathNotNormalized()
     {
         $finder = $this->buildFinder();
 
-        $expected = $this->toAbsolute(array('foo/../foo/bar.tmp'));
+        $expected = $this->toAbsolute(['foo/../foo/bar.tmp']);
         $in = self::$tmpDir.'/foo/../foo/';
         $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
     }
@@ -89,68 +89,68 @@ public function testDepth()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->depth('< 1'));
-        $this->assertIterator($this->toAbsolute(array('foo', 'test.php', 'test.py', 'toto', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->depth('<= 0'));
-        $this->assertIterator($this->toAbsolute(array('foo', 'test.php', 'test.py', 'toto', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->depth('>= 1'));
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->depth('< 1')->depth('>= 1');
-        $this->assertIterator(array(), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testName()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->name('*.php'));
-        $this->assertIterator($this->toAbsolute(array('test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('test.ph*');
         $finder->name('test.py');
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('~^test~i');
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('~\\.php$~i');
-        $this->assertIterator($this->toAbsolute(array('test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('test.p{hp,y}');
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testNotName()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->notName('*.php'));
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'test.py', 'toto', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->notName('*.php');
         $finder->notName('*.py');
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'toto', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('test.ph*');
         $finder->name('test.py');
         $finder->notName('*.php');
         $finder->notName('*.py');
-        $this->assertIterator(array(), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('test.ph*');
         $finder->name('test.py');
         $finder->notName('*.p{hp,y}');
-        $this->assertIterator(array(), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());
     }
 
     /**
@@ -160,107 +160,107 @@ public function testRegexName($regex)
     {
         $finder = $this->buildFinder();
         $finder->name($regex);
-        $this->assertIterator($this->toAbsolute(array('test.py', 'test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.py', 'test.php']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSize()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->files()->size('< 1K')->size('> 500'));
-        $this->assertIterator($this->toAbsolute(array('test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testDate()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->files()->date('until last month'));
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp', 'test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testExclude()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->exclude('foo'));
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py', 'toto', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testIgnoreVCS()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->ignoreVCS(false)->ignoreDotFiles(false));
-        $this->assertIterator($this->toAbsolute(array('.git', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['.git', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->ignoreVCS(false)->ignoreVCS(false)->ignoreDotFiles(false);
-        $this->assertIterator($this->toAbsolute(array('.git', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['.git', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->ignoreVCS(true)->ignoreDotFiles(false));
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testIgnoreDotFiles()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->ignoreDotFiles(false)->ignoreVCS(false));
-        $this->assertIterator($this->toAbsolute(array('.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->ignoreDotFiles(false)->ignoreDotFiles(false)->ignoreVCS(false);
-        $this->assertIterator($this->toAbsolute(array('.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->ignoreDotFiles(true)->ignoreVCS(false));
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByName()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByName());
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo bar', 'foo/bar.tmp', 'test.php', 'test.py', 'toto')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo bar', 'foo/bar.tmp', 'test.php', 'test.py', 'toto']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByType()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByType());
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo bar', 'toto', 'foo/bar.tmp', 'test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo bar', 'toto', 'foo/bar.tmp', 'test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByAccessedTime()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByAccessedTime());
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp', 'test.php', 'toto', 'test.py', 'foo', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php', 'toto', 'test.py', 'foo', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByChangedTime()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByChangedTime());
-        $this->assertIterator($this->toAbsolute(array('toto', 'test.py', 'test.php', 'foo/bar.tmp', 'foo', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['toto', 'test.py', 'test.php', 'foo/bar.tmp', 'foo', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByModifiedTime()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByModifiedTime());
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp', 'test.php', 'toto', 'test.py', 'foo', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php', 'toto', 'test.py', 'foo', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSort()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sort(function (\SplFileInfo $a, \SplFileInfo $b) { return strcmp($a->getRealPath(), $b->getRealPath()); }));
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo bar', 'foo/bar.tmp', 'test.php', 'test.py', 'toto')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo bar', 'foo/bar.tmp', 'test.php', 'test.py', 'toto']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testFilter()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->filter(function (\SplFileInfo $f) { return false !== strpos($f, 'test'); }));
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testFollowLinks()
@@ -271,19 +271,19 @@ public function testFollowLinks()
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->followLinks());
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'foo bar')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testIn()
     {
         $finder = $this->buildFinder();
-        $iterator = $finder->files()->name('*.php')->depth('< 1')->in(array(self::$tmpDir, __DIR__))->getIterator();
+        $iterator = $finder->files()->name('*.php')->depth('< 1')->in([self::$tmpDir, __DIR__])->getIterator();
 
-        $expected = array(
+        $expected = [
             self::$tmpDir.\DIRECTORY_SEPARATOR.'test.php',
             __DIR__.\DIRECTORY_SEPARATOR.'FinderTest.php',
             __DIR__.\DIRECTORY_SEPARATOR.'GlobTest.php',
-        );
+        ];
 
         $this->assertIterator($expected, $iterator);
     }
@@ -300,9 +300,9 @@ public function testInWithNonExistentDirectory()
     public function testInWithGlob()
     {
         $finder = $this->buildFinder();
-        $finder->in(array(__DIR__.'/Fixtures/*/B/C/', __DIR__.'/Fixtures/*/*/B/C/'))->getIterator();
+        $finder->in([__DIR__.'/Fixtures/*/B/C/', __DIR__.'/Fixtures/*/*/B/C/'])->getIterator();
 
-        $this->assertIterator($this->toAbsoluteFixtures(array('A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy')), $finder);
+        $this->assertIterator($this->toAbsoluteFixtures(['A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy']), $finder);
     }
 
     /**
@@ -317,9 +317,9 @@ public function testInWithNonDirectoryGlob()
     public function testInWithGlobBrace()
     {
         $finder = $this->buildFinder();
-        $finder->in(array(__DIR__.'/Fixtures/{A,copy/A}/B/C'))->getIterator();
+        $finder->in([__DIR__.'/Fixtures/{A,copy/A}/B/C'])->getIterator();
 
-        $this->assertIterator($this->toAbsoluteFixtures(array('A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy')), $finder);
+        $this->assertIterator($this->toAbsoluteFixtures(['A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy']), $finder);
     }
 
     /**
@@ -334,12 +334,12 @@ public function testGetIteratorWithoutIn()
     public function testGetIterator()
     {
         $finder = $this->buildFinder();
-        $dirs = array();
+        $dirs = [];
         foreach ($finder->directories()->in(self::$tmpDir) as $dir) {
             $dirs[] = (string) $dir;
         }
 
-        $expected = $this->toAbsolute(array('foo', 'toto'));
+        $expected = $this->toAbsolute(['foo', 'toto']);
 
         sort($dirs);
         sort($expected);
@@ -360,13 +360,13 @@ public function testRelativePath()
     {
         $finder = $this->buildFinder()->in(self::$tmpDir);
 
-        $paths = array();
+        $paths = [];
 
         foreach ($finder as $file) {
             $paths[] = $file->getRelativePath();
         }
 
-        $ref = array('', '', '', '', 'foo', '');
+        $ref = ['', '', '', '', 'foo', ''];
 
         sort($ref);
         sort($paths);
@@ -378,13 +378,13 @@ public function testRelativePathname()
     {
         $finder = $this->buildFinder()->in(self::$tmpDir)->sortByName();
 
-        $paths = array();
+        $paths = [];
 
         foreach ($finder as $file) {
             $paths[] = $file->getRelativePathname();
         }
 
-        $ref = array('test.php', 'toto', 'test.py', 'foo', 'foo'.\DIRECTORY_SEPARATOR.'bar.tmp', 'foo bar');
+        $ref = ['test.php', 'toto', 'test.py', 'foo', 'foo'.\DIRECTORY_SEPARATOR.'bar.tmp', 'foo bar'];
 
         sort($paths);
         sort($ref);
@@ -402,7 +402,7 @@ public function testAppendWithAFinder()
 
         $finder = $finder->append($finder1);
 
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'toto')), $finder->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'toto']), $finder->getIterator());
     }
 
     public function testAppendWithAnArray()
@@ -410,14 +410,14 @@ public function testAppendWithAnArray()
         $finder = $this->buildFinder();
         $finder->files()->in(self::$tmpDir.\DIRECTORY_SEPARATOR.'foo');
 
-        $finder->append($this->toAbsolute(array('foo', 'toto')));
+        $finder->append($this->toAbsolute(['foo', 'toto']));
 
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'toto')), $finder->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'toto']), $finder->getIterator());
     }
 
     public function testAppendReturnsAFinder()
     {
-        $this->assertInstanceOf('Symfony\\Component\\Finder\\Finder', Finder::create()->append(array()));
+        $this->assertInstanceOf('Symfony\\Component\\Finder\\Finder', Finder::create()->append([]));
     }
 
     public function testAppendDoesNotRequireIn()
@@ -498,7 +498,7 @@ public function testContainsOnDirectory()
             ->directories()
             ->name('Fixtures')
             ->contains('abc');
-        $this->assertIterator(array(), $finder);
+        $this->assertIterator([], $finder);
     }
 
     public function testNotContainsOnDirectory()
@@ -508,7 +508,7 @@ public function testNotContainsOnDirectory()
             ->directories()
             ->name('Fixtures')
             ->notContains('abc');
-        $this->assertIterator(array(), $finder);
+        $this->assertIterator([], $finder);
     }
 
     /**
@@ -519,10 +519,10 @@ public function testNotContainsOnDirectory()
      */
     public function testMultipleLocations()
     {
-        $locations = array(
+        $locations = [
             self::$tmpDir.'/',
             self::$tmpDir.'/toto/',
-        );
+        ];
 
         // it is expected that there are test.py test.php in the tmpDir
         $finder = new Finder();
@@ -544,18 +544,18 @@ public function testMultipleLocations()
      */
     public function testMultipleLocationsWithSubDirectories()
     {
-        $locations = array(
+        $locations = [
             __DIR__.'/Fixtures/one',
             self::$tmpDir.\DIRECTORY_SEPARATOR.'toto',
-        );
+        ];
 
         $finder = $this->buildFinder();
         $finder->in($locations)->depth('< 10')->name('*.neon');
 
-        $expected = array(
+        $expected = [
             __DIR__.'/Fixtures/one'.\DIRECTORY_SEPARATOR.'b'.\DIRECTORY_SEPARATOR.'c.neon',
             __DIR__.'/Fixtures/one'.\DIRECTORY_SEPARATOR.'b'.\DIRECTORY_SEPARATOR.'d.neon',
-        );
+        ];
 
         $this->assertIterator($expected, $finder);
         $this->assertIteratorInForeach($expected, $finder);
@@ -578,32 +578,32 @@ public function testRegexSpecialCharsLocationWithPathRestrictionContainingStartF
         $finder->in(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'r+e.gex[c]a(r)s')
             ->path('/^dir/');
 
-        $expected = array('r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir', 'r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir'.\DIRECTORY_SEPARATOR.'bar.dat');
+        $expected = ['r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir', 'r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir'.\DIRECTORY_SEPARATOR.'bar.dat'];
         $this->assertIterator($this->toAbsoluteFixtures($expected), $finder);
     }
 
     public function getContainsTestData()
     {
-        return array(
-            array('', '', array()),
-            array('foo', 'bar', array()),
-            array('', 'foobar', array('dolor.txt', 'ipsum.txt', 'lorem.txt')),
-            array('lorem ipsum dolor sit amet', 'foobar', array('lorem.txt')),
-            array('sit', 'bar', array('dolor.txt', 'ipsum.txt', 'lorem.txt')),
-            array('dolor sit amet', '@^L@m', array('dolor.txt', 'ipsum.txt')),
-            array('/^lorem ipsum dolor sit amet$/m', 'foobar', array('lorem.txt')),
-            array('lorem', 'foobar', array('lorem.txt')),
-            array('', 'lorem', array('dolor.txt', 'ipsum.txt')),
-            array('ipsum dolor sit amet', '/^IPSUM/m', array('lorem.txt')),
-        );
+        return [
+            ['', '', []],
+            ['foo', 'bar', []],
+            ['', 'foobar', ['dolor.txt', 'ipsum.txt', 'lorem.txt']],
+            ['lorem ipsum dolor sit amet', 'foobar', ['lorem.txt']],
+            ['sit', 'bar', ['dolor.txt', 'ipsum.txt', 'lorem.txt']],
+            ['dolor sit amet', '@^L@m', ['dolor.txt', 'ipsum.txt']],
+            ['/^lorem ipsum dolor sit amet$/m', 'foobar', ['lorem.txt']],
+            ['lorem', 'foobar', ['lorem.txt']],
+            ['', 'lorem', ['dolor.txt', 'ipsum.txt']],
+            ['ipsum dolor sit amet', '/^IPSUM/m', ['lorem.txt']],
+        ];
     }
 
     public function getRegexNameTestData()
     {
-        return array(
-            array('~.+\\.p.+~i'),
-            array('~t.*s~i'),
-        );
+        return [
+            ['~.+\\.p.+~i'],
+            ['~t.*s~i'],
+        ];
     }
 
     /**
@@ -621,29 +621,29 @@ public function testPath($matchPatterns, $noMatchPatterns, array $expected)
 
     public function getTestPathData()
     {
-        return array(
-            array('', '', array()),
-            array('/^A\/B\/C/', '/C$/',
-                array('A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat'),
-            ),
-            array('/^A\/B/', 'foobar',
-                array(
+        return [
+            ['', '', []],
+            ['/^A\/B\/C/', '/C$/',
+                ['A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat'],
+            ],
+            ['/^A\/B/', 'foobar',
+                [
                     'A'.\DIRECTORY_SEPARATOR.'B',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
-                ),
-            ),
-            array('A/B/C', 'foobar',
-                array(
+          
10000
      ],
+            ],
+            ['A/B/C', 'foobar',
+                [
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
                     'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                     'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat.copy',
-                ),
-            ),
-            array('A/B', 'foobar',
-                array(
+                ],
+            ],
+            ['A/B', 'foobar',
+                [
                     //dirs
                     'A'.\DIRECTORY_SEPARATOR.'B',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
@@ -654,14 +654,14 @@ public function getTestPathData()
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
                     'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat.copy',
                     'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat.copy',
-                ),
-            ),
-            array('/^with space\//', 'foobar',
-                array(
+                ],
+            ],
+            ['/^with space\//', 'foobar',
+                [
                     'with space'.\DIRECTORY_SEPARATOR.'foo.txt',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
     }
 
     public function testAccessDeniedException()
@@ -679,7 +679,7 @@ public function testAccessDeniedException()
 
         if (false === $couldRead = is_readable($testDir)) {
             try {
-                $this->assertIterator($this->toAbsolute(array('foo bar', 'test.php', 'test.py')), $finder->getIterator());
+                $this->assertIterator($this->toAbsolute(['foo bar', 'test.php', 'test.py']), $finder->getIterator());
                 $this->fail('Finder should throw an exception when opening a non-readable directory.');
             } catch (\Exception $e) {
                 $expectedExceptionClass = 'Symfony\\Component\\Finder\\Exception\\AccessDeniedException';
@@ -718,7 +718,7 @@ public function testIgnoredAccessDeniedException()
         chmod($testDir, 0333);
 
         if (false === ($couldRead = is_readable($testDir))) {
-            $this->assertIterator($this->toAbsolute(array('foo bar', 'test.php', 'test.py')), $finder->getIterator());
+            $this->assertIterator($this->toAbsolute(['foo bar', 'test.php', 'test.py']), $finder->getIterator());
         }
 
         // restore original permissions
diff --git a/src/Symfony/Component/Finder/Tests/GlobTest.php b/src/Symfony/Component/Finder/Tests/GlobTest.php
index 3a5aab312428..2d48799c5cfa 100644
--- a/src/Symfony/Component/Finder/Tests/GlobTest.php
+++ b/src/Symfony/Component/Finder/Tests/GlobTest.php
@@ -39,7 +39,7 @@ public function testGlobToRegexDoubleStarStrictDots()
         }
         sort($match);
 
-        $this->assertSame(array('one/b/c.neon', 'one/b/d.neon'), $match);
+        $this->assertSame(['one/b/c.neon', 'one/b/d.neon'], $match);
     }
 
     public function testGlobToRegexDoubleStarNonStrictDots()
@@ -56,7 +56,7 @@ public function testGlobToRegexDoubleStarNonStrictDots()
         }
         sort($match);
 
-        $this->assertSame(array('.dot/b/c.neon', '.dot/b/d.neon', 'one/b/c.neon', 'one/b/d.neon'), $match);
+        $this->assertSame(['.dot/b/c.neon', '.dot/b/d.neon', 'one/b/c.neon', 'one/b/d.neon'], $match);
     }
 
     public function testGlobToRegexDoubleStarWithoutLeadingSlash()
@@ -73,7 +73,7 @@ public function testGlobToRegexDoubleStarWithoutLeadingSlash()
         }
         sort($match);
 
-        $this->assertSame(array('one/a', 'one/b', 'one/b/c.neon', 'one/b/d.neon'), $match);
+        $this->assertSame(['one/a', 'one/b', 'one/b/c.neon', 'one/b/d.neon'], $match);
     }
 
     public function testGlobToRegexDoubleStarWithoutLeadingSlashNotStrictLeadingDot()
@@ -90,6 +90,6 @@ public function testGlobToRegexDoubleStarWithoutLeadingSlashNotStrictLeadingDot(
         }
         sort($match);
 
-        $this->assertSame(array('one/.dot', 'one/a', 'one/b', 'one/b/c.neon', 'one/b/d.neon'), $match);
+        $this->assertSame(['one/.dot', 'one/a', 'one/b', 'one/b/c.neon', 'one/b/d.neon'], $match);
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/CustomFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/CustomFilterIteratorTest.php
index b036ad13c21b..ad0187e032af 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/CustomFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/CustomFilterIteratorTest.php
@@ -20,7 +20,7 @@ class CustomFilterIteratorTest extends IteratorTestCase
      */
     public function testWithInvalidFilter()
     {
-        new CustomFilterIterator(new Iterator(), array('foo'));
+        new CustomFilterIterator(new Iterator(), ['foo']);
     }
 
     /**
@@ -28,7 +28,7 @@ public function testWithInvalidFilter()
      */
     public function testAccept($filters, $expected)
     {
-        $inner = new Iterator(array('test.php', 'test.py', 'foo.php'));
+        $inner = new Iterator(['test.php', 'test.py', 'foo.php']);
 
         $iterator = new CustomFilterIterator($inner, $filters);
 
@@ -37,10 +37,10 @@ public function testAccept($filters, $expected)
 
     public function getAcceptData()
     {
-        return array(
-            array(array(function (\SplFileInfo $fileinfo) { return false; }), array()),
-            array(array(function (\SplFileInfo $fileinfo) { return 0 === strpos($fileinfo, 'test'); }), array('test.php', 'test.py')),
-            array(array('is_dir'), array()),
-        );
+        return [
+            [[function (\SplFileInfo $fileinfo) { return false; }], []],
+            [[function (\SplFileInfo $fileinfo) { return 0 === strpos($fileinfo, 'test'); }], ['test.php', 'test.py']],
+            [['is_dir'], []],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/DateRangeFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/DateRangeFilterIteratorTest.php
index 3226f706c7e1..7b1800b157a0 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/DateRangeFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/DateRangeFilterIteratorTest.php
@@ -32,7 +32,7 @@ public function testAccept($size, $expected)
 
     public function getAcceptData()
     {
-        $since20YearsAgo = array(
+        $since20YearsAgo = [
             '.git',
             'test.py',
             'foo',
@@ -45,9 +45,9 @@ public function getAcceptData()
             '.foo/.bar',
             'foo bar',
             '.foo/bar',
-        );
+        ];
 
-        $since2MonthsAgo = array(
+        $since2MonthsAgo = [
             '.git',
             'test.py',
             'foo',
@@ -58,17 +58,17 @@ public function getAcceptData()
             '.foo/.bar',
             'foo bar',
             '.foo/bar',
-        );
+        ];
 
-        $untilLastMonth = array(
+        $untilLastMonth = [
             'foo/bar.tmp',
             'test.php',
-        );
+        ];
 
-        return array(
-            array(array(new DateComparator('since 20 years ago')), $this->toAbsolute($since20YearsAgo)),
-            array(array(new DateComparator('since 2 months ago')), $this->toAbsolute($since2MonthsAgo)),
-            array(array(new DateComparator('until last month')), $this->toAbsolute($untilLastMonth)),
-        );
+        return [
+            [[new DateComparator('since 20 years ago')], $this->toAbsolute($since20YearsAgo)],
+            [[new DateComparator('since 2 months ago')], $this->toAbsolute($since2MonthsAgo)],
+            [[new DateComparator('until last month')], $this->toAbsolute($untilLastMonth)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/DepthRangeFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/DepthRangeFilterIteratorTest.php
index 2e90140530cd..dab9723d7ed2 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/DepthRangeFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/DepthRangeFilterIteratorTest.php
@@ -32,7 +32,7 @@ public function testAccept($minDepth, $maxDepth, $expected)
 
     public function getAcceptData()
     {
-        $lessThan1 = array(
+        $lessThan1 = [
             '.git',
             'test.py',
             'foo',
@@ -41,9 +41,9 @@ public function getAcceptData()
             '.foo',
             '.bar',
             'foo bar',
-        );
+        ];
 
-        $lessThanOrEqualTo1 = array(
+        $lessThanOrEqualTo1 = [
             '.git',
             'test.py',
             'foo',
@@ -56,28 +56,28 @@ public function getAcceptData()
             '.bar',
             'foo bar',
             '.foo/bar',
-        );
+        ];
 
-        $graterThanOrEqualTo1 = array(
+        $graterThanOrEqualTo1 = [
             'toto/.git',
             'foo/bar.tmp',
             '.foo/.bar',
             '.foo/bar',
-        );
+        ];
 
-        $equalTo1 = array(
+        $equalTo1 = [
             'toto/.git',
             'foo/bar.tmp',
             '.foo/.bar',
             '.foo/bar',
-        );
+        ];
 
-        return array(
-            array(0, 0, $this->toAbsolute($lessThan1)),
-            array(0, 1, $this->toAbsolute($lessThanOrEqualTo1)),
-            array(2, PHP_INT_MAX, array()),
-            array(1, PHP_INT_MAX, $this->toAbsolute($graterThanOrEqualTo1)),
-            array(1, 1, $this->toAbsolute($equalTo1)),
-        );
+        return [
+            [0, 0, $this->toAbsolute($lessThan1)],
+            [0, 1, $this->toAbsolute($lessThanOrEqualTo1)],
+            [2, PHP_INT_MAX, []],
+            [1, PHP_INT_MAX, $this->toAbsolute($graterThanOrEqualTo1)],
+            [1, 1, $this->toAbsolute($equalTo1)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/ExcludeDirectoryFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/ExcludeDirectoryFilterIteratorTest.php
index fa192c31f4de..2835ba57c817 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/ExcludeDirectoryFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/ExcludeDirectoryFilterIteratorTest.php
@@ -30,7 +30,7 @@ public function testAccept($directories, $expected)
 
     public function getAcceptData()
     {
-        $foo = array(
+        $foo = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -41,9 +41,9 @@ public function getAcceptData()
             'toto',
             'toto/.git',
             'foo bar',
-        );
+        ];
 
-        $fo = array(
+        $fo = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -56,9 +56,9 @@ public function getAcceptData()
             'toto',
             'toto/.git',
             'foo bar',
-        );
+        ];
 
-        $toto = array(
+        $toto = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -69,12 +69,12 @@ public function getAcceptData()
             'foo/bar.tmp',
             'test.php',
             'foo bar',
-        );
+        ];
 
-        return array(
-            array(array('foo'), $this->toAbsolute($foo)),
-            array(array('fo'), $this->toAbsolute($fo)),
-            array(array('toto/'), $this->toAbsolute($toto)),
-        );
+        return [
+            [['foo'], $this->toAbsolute($foo)],
+            [['fo'], $this->toAbsolute($fo)],
+            [['toto/'], $this->toAbsolute($toto)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/FileTypeFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/FileTypeFilterIteratorTest.php
index 4350b00ca940..fe03b434ad55 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/FileTypeFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/FileTypeFilterIteratorTest.php
@@ -29,7 +29,7 @@ public function testAccept($mode, $expected)
 
     public function getAcceptData()
     {
-        $onlyFiles = array(
+        $onlyFiles = [
             'test.py',
             'foo/bar.tmp',
             'test.php',
@@ -37,20 +37,20 @@ public function getAcceptData()
             '.foo/.bar',
             '.foo/bar',
             'foo bar',
-        );
+        ];
 
-        $onlyDirectories = array(
+        $onlyDirectories = [
             '.git',
             'foo',
             'toto',
             'toto/.git',
             '.foo',
-        );
+        ];
 
-        return array(
-            array(FileTypeFilterIterator::ONLY_FILES, $this->toAbsolute($onlyFiles)),
-            array(FileTypeFilterIterator::ONLY_DIRECTORIES, $this->toAbsolute($onlyDirectories)),
-        );
+        return [
+            [FileTypeFilterIterator::ONLY_FILES, $this->toAbsolute($onlyFiles)],
+            [FileTypeFilterIterator::ONLY_DIRECTORIES, $this->toAbsolute($onlyDirectories)],
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/FilecontentFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/FilecontentFilterIteratorTest.php
index 744bdae12a62..f4f70c8e8c73 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/FilecontentFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/FilecontentFilterIteratorTest.php
@@ -17,23 +17,23 @@ class FilecontentFilterIteratorTest extends IteratorTestCase
 {
     public function testAccept()
     {
-        $inner = new MockFileListIterator(array('test.txt'));
-        $iterator = new FilecontentFilterIterator($inner, array(), array());
-        $this->assertIterator(array('test.txt'), $iterator);
+        $inner = new MockFileListIterator(['test.txt']);
+        $iterator = new FilecontentFilterIterator($inner, [], []);
+        $this->assertIterator(['test.txt'], $iterator);
     }
 
     public function testDirectory()
     {
-        $inner = new MockFileListIterator(array('directory'));
-        $iterator = new FilecontentFilterIterator($inner, array('directory'), array());
-        $this->assertIterator(array(), $iterator);
+        $inner = new MockFileListIterator(['directory']);
+        $iterator = new FilecontentFilterIterator($inner, ['directory'], []);
+        $this->assertIterator([], $iterator);
     }
 
     public function testUnreadableFile()
     {
-        $inner = new MockFileListIterator(array('file r-'));
-        $iterator = new FilecontentFilterIterator($inner, array('file r-'), array());
-        $this->assertIterator(array(), $iterator);
+        $inner = new MockFileListIterator(['file r-']);
+        $iterator = new FilecontentFilterIterator($inner, ['file r-'], []);
+        $this->assertIterator([], $iterator);
     }
 
     /**
@@ -49,38 +49,38 @@ public function getTestFilterData()
     {
         $inner = new MockFileListIterator();
 
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'a.txt',
             'contents' => 'Lorem ipsum...',
             'type' => 'file',
-            'mode' => 'r+', )
+            'mode' => 'r+', ]
         );
 
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'b.yml',
             'contents' => 'dolor sit...',
             'type' => 'file',
-            'mode' => 'r+', )
+            'mode' => 'r+', ]
         );
 
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'some/other/dir/third.php',
             'contents' => 'amet...',
             'type' => 'file',
-            'mode' => 'r+', )
+            'mode' => 'r+', ]
         );
 
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'unreadable-file.txt',
             'contents' => false,
             'type' => 'file',
-            'mode' => 'r+', )
+            'mode' => 'r+', ]
         );
 
-        return array(
-            array($inner, array('.'), array(), array('a.txt', 'b.yml', 'some/other/dir/third.php')),
-            array($inner, array('ipsum'), array(), array('a.txt')),
-            array($inner, array('i', 'amet'), array('Lorem', 'amet'), array('b.yml')),
-        );
+        return [
+            [$inner, ['.'], [], ['a.txt', 'b.yml', 'some/other/dir/third.php']],
+            [$inner, ['ipsum'], [], ['a.txt']],
+            [$inner, ['i', 'amet'], ['Lorem', 'amet'], ['b.yml']],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/FilenameFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/FilenameFilterIteratorTest.php
index c4b97959188c..9270dd1cd3a3 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/FilenameFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/FilenameFilterIteratorTest.php
@@ -20,7 +20,7 @@ class FilenameFilterIteratorTest extends IteratorTestCase
      */
     public function testAccept($matchPatterns, $noMatchPatterns, $expected)
     {
-        $inner = new InnerNameIterator(array('test.php', 'test.py', 'foo.php'));
+        $inner = new InnerNameIterator(['test.php', 'test.py', 'foo.php']);
 
         $iterator = new FilenameFilterIterator($inner, $matchPatterns, $noMatchPatterns);
 
@@ -29,14 +29,14 @@ public function testAccept($matchPatterns, $noMatchPatterns, $expected)
 
     public function getAcceptData()
     {
-        return array(
-            array(array('test.*'), array(), array('test.php', 'test.py')),
-            array(array(), array('test.*'), array('foo.php')),
-            array(array('*.php'), array('test.*'), array('foo.php')),
-            array(array('*.php', '*.py'), array('foo.*'), array('test.php', 'test.py')),
-            array(array('/\.php$/'), array(), array('test.php', 'foo.php')),
-            array(array(), array('/\.php$/'), array('test.py')),
-        );
+        return [
+            [['test.*'], [], ['test.php', 'test.py']],
+            [[], ['test.*'], ['foo.php']],
+            [['*.php'], ['test.*'], ['foo.php']],
+            [['*.php', '*.py'], ['foo.*'], ['test.php', 'test.py']],
+            [['/\.php$/'], [], ['test.php', 'foo.php']],
+            [[], ['/\.php$/'], ['test.py']],
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/FilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/FilterIteratorTest.php
index 8b1a4482bae2..b26f7ba6bdd2 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/FilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/FilterIteratorTest.php
@@ -23,7 +23,7 @@ public function testFilterFilesystemIterators()
         $i = new \FilesystemIterator($this->toAbsolute());
 
         // it is expected that there are test.py test.php in the tmpDir
-        $i = $this->getMockForAbstractClass('Symfony\Component\Finder\Iterator\FilterIterator', array($i));
+        $i = $this->getMockForAbstractClass('Symfony\Component\Finder\Iterator\FilterIterator', [$i]);
         $i->expects($this->any())
             ->method('accept')
             ->will($this->returnCallback(function () use ($i) {
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/Iterator.php b/src/Symfony/Component/Finder/Tests/Iterator/Iterator.php
index 849bf081e2cc..3e21a070047a 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/Iterator.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/Iterator.php
@@ -13,9 +13,9 @@
 
 class Iterator implements \Iterator
 {
-    protected $values = array();
+    protected $values = [];
 
-    public function __construct(array $values = array())
+    public function __construct(array $values = [])
     {
         foreach ($values as $value) {
             $this->attach(new \SplFileInfo($value));
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/IteratorTestCase.php b/src/Symfony/Component/Finder/Tests/Iterator/IteratorTestCase.php
index 89f042aefadd..796dc6ac360b 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/IteratorTestCase.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/IteratorTestCase.php
@@ -51,7 +51,7 @@ protected function assertOrderedIteratorForGroups($expected, \Traversable $itera
         $values = array_values(array_map(function (\SplFileInfo $fileinfo) { return $fileinfo->getPathname(); }, iterator_to_array($iterator)));
 
         foreach ($expected as $subarray) {
-            $temp = array();
+            $temp = [];
             while (\count($values) && \count($temp) < \count($subarray)) {
                 $temp[] = array_shift($values);
             }
@@ -69,7 +69,7 @@ protected function assertOrderedIteratorForGroups($expected, \Traversable $itera
      */
     protected function assertIteratorInForeach($expected, \Traversable $iterator)
     {
-        $values = array();
+        $values = [];
         foreach ($iterator as $file) {
             $this->assertInstanceOf('Symfony\\Component\\Finder\\SplFileInfo', $file);
             $values[] = $file->getPathname();
@@ -89,7 +89,7 @@ protected function assertIteratorInForeach($expected, \Traversable $iterator)
      */
     protected function assertOrderedIteratorInForeach($expected, \Traversable $iterator)
     {
-        $values = array();
+        $values = [];
         foreach ($iterator as $file) {
             $this->assertInstanceOf('Symfony\\Component\\Finder\\SplFileInfo', $file);
             $values[] = $file->getPathname();
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/MockFileListIterator.php b/src/Symfony/Component/Finder/Tests/Iterator/MockFileListIterator.php
index eb0adfad0a4c..670478d7a752 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/MockFileListIterator.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/MockFileListIterator.php
@@ -13,7 +13,7 @@
 
 class MockFileListIterator extends \ArrayIterator
 {
-    public function __construct(array $filesArray = array())
+    public function __construct(array $filesArray = [])
     {
         $files = array_map(function ($file) { return new MockSplFileInfo($file); }, $filesArray);
         parent::__construct($files);
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/MockSplFileInfo.php b/src/Symfony/Component/Finder/Tests/Iterator/MockSplFileInfo.php
index a5ac93a46c82..58bb5979e97a 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/MockSplFileInfo.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/MockSplFileInfo.php
@@ -28,14 +28,14 @@ public function __construct($param)
         if (\is_string($param)) {
             parent::__construct($param);
         } elseif (\is_array($param)) {
-            $defaults = array(
+            $defaults = [
                 'name' => 'file.txt',
                 'contents' => null,
                 'mode' => null,
                 'type' => null,
                 'relativePath' => null,
                 'relativePathname' => null,
-            );
+            ];
             $defaults = array_merge($defaults, $param);
             parent::__construct($defaults['name']);
             $this->setContents($defaults['contents']);
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/MultiplePcreFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/MultiplePcreFilterIteratorTest.php
index f2c1cd2414c8..955677695ba0 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/MultiplePcreFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/MultiplePcreFilterIteratorTest.php
@@ -27,24 +27,24 @@ public function testIsRegex($string, $isRegex, $message)
 
     public function getIsRegexFixtures()
     {
-        return array(
-            array('foo', false, 'string'),
-            array(' foo ', false, '" " is not a valid delimiter'),
-            array('\\foo\\', false, '"\\" is not a valid delimiter'),
-            array('afooa', false, '"a" is not a valid delimiter'),
-            array('//', false, 'the pattern should contain at least 1 character'),
-            array('/a/', true, 'valid regex'),
-            array('/foo/', true, 'valid regex'),
-            array('/foo/i', true, 'valid regex with a single modifier'),
-            array('/foo/imsxu', true, 'valid regex with multiple modifiers'),
-            array('#foo#', true, '"#" is a valid delimiter'),
-            array('{foo}', true, '"{,}" is a valid delimiter pair'),
-            array('[foo]', true, '"[,]" is a valid delimiter pair'),
-            array('(foo)', true, '"(,)" is a valid delimiter pair'),
-            array('<foo>', true, '"<,>" is a valid delimiter pair'),
-            array('*foo.*', false, '"*" is not considered as a valid delimiter'),
-            array('?foo.?', false, '"?" is not considered as a valid delimiter'),
-        );
+        return [
+            ['foo', false, 'string'],
+            [' foo ', false, '" " is not a valid delimiter'],
+            ['\\foo\\', false, '"\\" is not a valid delimiter'],
+            ['afooa', false, '"a" is not a valid delimiter'],
+            ['//', false, 'the pattern should contain at least 1 character'],
+            ['/a/', true, 'valid regex'],
+            ['/foo/', true, 'valid regex'],
+            ['/foo/i', true, 'valid regex with a single modifier'],
+            ['/foo/imsxu', true, 'valid regex with multiple modifiers'],
+            ['#foo#', true, '"#" is a valid delimiter'],
+            ['{foo}', true, '"{,}" is a valid delimiter pair'],
+            ['[foo]', true, '"[,]" is a valid delimiter pair'],
+            ['(foo)', true, '"(,)" is a valid delimiter pair'],
+            ['<foo>', true, '"<,>" is a valid delimiter pair'],
+            ['*foo.*', false, '"*" is not considered as a valid delimiter'],
+            ['?foo.?', false, '"?" is not considered as a valid delimiter'],
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
index 38ed966a6103..d44651771f86 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
@@ -29,54 +29,54 @@ public function getTestFilterData()
         $inner = new MockFileListIterator();
 
         //PATH:   A/B/C/abc.dat
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'abc.dat',
             'relativePathname' => 'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
-        ));
+        ]);
 
         //PATH:   A/B/ab.dat
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'ab.dat',
             'relativePathname' => 'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat',
-        ));
+        ]);
 
         //PATH:   A/a.dat
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'a.dat',
             'relativePathname' => 'A'.\DIRECTORY_SEPARATOR.'a.dat',
-        ));
+        ]);
 
         //PATH:   copy/A/B/C/abc.dat.copy
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'abc.dat.copy',
             'relativePathname' => 'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
-        ));
+        ]);
 
         //PATH:   copy/A/B/ab.dat.copy
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'ab.dat.copy',
             'relativePathname' => 'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat',
-        ));
+        ]);
 
         //PATH:   copy/A/a.dat.copy
-        $inner[] = new MockSplFileInfo(array(
+        $inner[] = new MockSplFileInfo([
             'name' => 'a.dat.copy',
             'relativePathname' => 'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'a.dat',
-        ));
+        ]);
 
-        return array(
-            array($inner, array('/^A/'),       array(), array('abc.dat', 'ab.dat', 'a.dat')),
-            array($inner, array('/^A\/B/'),    array(), array('abc.dat', 'ab.dat')),
-            array($inner, array('/^A\/B\/C/'), array(), array('abc.dat')),
-            array($inner, array('/A\/B\/C/'),  array(), array('abc.dat', 'abc.dat.copy')),
+        return [
+            [$inner, ['/^A/'],       [], ['abc.dat', 'ab.dat', 'a.dat']],
+            [$inner, ['/^A\/B/'],    [], ['abc.dat', 'ab.dat']],
+            [$inner, ['/^A\/B\/C/'], [], ['abc.dat']],
+            [$inner, ['/A\/B\/C/'],  [], ['abc.dat', 'abc.dat.copy']],
 
-            array($inner, array('A'),      array(), array('abc.dat', 'ab.dat', 'a.dat', 'abc.dat.copy', 'ab.dat.copy', 'a.dat.copy')),
-            array($inner, array('A/B'),    array(), array('abc.dat', 'ab.dat', 'abc.dat.copy', 'ab.dat.copy')),
-            array($inner, array('A/B/C'),  array(), array('abc.dat', 'abc.dat.copy')),
+            [$inner, ['A'],      [], ['abc.dat', 'ab.dat', 'a.dat', 'abc.dat.copy', 'ab.dat.copy', 'a.dat.copy']],
+            [$inner, ['A/B'],    [], ['abc.dat', 'ab.dat', 'abc.dat.copy', 'ab.dat.copy']],
+            [$inner, ['A/B/C'],  [], ['abc.dat', 'abc.dat.copy']],
 
-            array($inner, array('copy/A'),      array(), array('abc.dat.copy', 'ab.dat.copy', 'a.dat.copy')),
-            array($inner, array('copy/A/B'),    array(), array('abc.dat.copy', 'ab.dat.copy')),
-            array($inner, array('copy/A/B/C'),  array(), array('abc.dat.copy')),
-        );
+            [$inner, ['copy/A'],      [], ['abc.dat.copy', 'ab.dat.copy', 'a.dat.copy']],
+            [$inner, ['copy/A/B'],    [], ['abc.dat.copy', 'ab.dat.copy']],
+            [$inner, ['copy/A/B/C'],  [], ['abc.dat.copy']],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/RealIteratorTestCase.php b/src/Symfony/Component/Finder/Tests/Iterator/RealIteratorTestCase.php
index b0223b782b6a..70048a5ea698 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/RealIteratorTestCase.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/RealIteratorTestCase.php
@@ -20,7 +20,7 @@ public static function setUpBeforeClass()
     {
         self::$tmpDir = realpath(sys_get_temp_dir()).\DIRECTORY_SEPARATOR.'symfony_finder';
 
-        self::$files = array(
+        self::$files = [
             '.git/',
             '.foo/',
             '.foo/.bar',
@@ -33,7 +33,7 @@ public static function setUpBeforeClass()
             'toto/',
             'toto/.git/',
             'foo bar',
-        );
+        ];
 
         self::$files = self::toAbsolute(self::$files);
 
@@ -88,7 +88,7 @@ protected static function toAbsolute($files = null)
         }
 
         if (\is_array($files)) {
-            $f = array();
+            $f = [];
             foreach ($files as $file) {
                 if (\is_array($file)) {
                     $f[] = self::toAbsolute($file);
@@ -109,7 +109,7 @@ protected static function toAbsolute($files = null)
 
     protected static function toAbsoluteFixtures($files)
     {
-        $f = array();
+        $f = [];
         foreach ($files as $file) {
             $f[] = realpath(__DIR__.\DIRECTORY_SEPARATOR.'..'.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.$file);
         }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/RecursiveDirectoryIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/RecursiveDirectoryIteratorTest.php
index 0c9aca24b936..037810aea799 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/RecursiveDirectoryIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/RecursiveDirectoryIteratorTest.php
@@ -42,11 +42,11 @@ public function testSeekOnFtp()
             $this->markTestSkipped('Unsupported stream "ftp".');
         }
 
-        $contains = array(
+        $contains = [
             'ftp://speedtest.tele2.net'.\DIRECTORY_SEPARATOR.'1000GB.zip',
             'ftp://speedtest.tele2.net'.\DIRECTORY_SEPARATOR.'100GB.zip',
-        );
-        $actual = array();
+        ];
+        $actual = [];
 
         $i->seek(0);
         $actual[] = $i->getPathname();
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/SizeRangeFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/SizeRangeFilterIteratorTest.php
index 068fc7b0bbfb..b1e431ba52f5 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/SizeRangeFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/SizeRangeFilterIteratorTest.php
@@ -30,18 +30,18 @@ public function testAccept($size, $expected)
 
     public function getAcceptData()
     {
-        $lessThan1KGreaterThan05K = array(
+        $lessThan1KGreaterThan05K = [
             '.foo',
             '.git',
             'foo',
             'test.php',
             'toto',
             'toto/.git',
-        );
+        ];
 
-        return array(
-            array(array(new NumberComparator('< 1K'), new NumberComparator('> 0.5K')), $this->toAbsolute($lessThan1KGreaterThan05K)),
-        );
+        return [
+            [[new NumberComparator('< 1K'), new NumberComparator('> 0.5K')], $this->toAbsolute($lessThan1KGreaterThan05K)],
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/SortableIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/SortableIteratorTest.php
index a35a12b5bee5..57f1e096a533 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/SortableIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/SortableIteratorTest.php
@@ -18,7 +18,7 @@ class SortableIteratorTest extends RealIteratorTestCase
     public function testConstructor()
     {
         try {
-            new SortableIterator(new Iterator(array()), 'foobar');
+            new SortableIterator(new Iterator([]), 'foobar');
             $this->fail('__construct() throws an \InvalidArgumentException exception if the mode is not valid');
         } catch (\Exception $e) {
             $this->assertInstanceOf('InvalidArgumentException', $e, '__construct() throws an \InvalidArgumentException exception if the mode is not valid');
@@ -73,7 +73,7 @@ public function testAccept($mode, $expected)
 
     public function getAcceptData()
     {
-        $sortByName = array(
+        $sortByName = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -86,9 +86,9 @@ public function getAcceptData()
             'test.py',
             'toto',
             'toto/.git',
-        );
+        ];
 
-        $sortByType = array(
+        $sortByType = [
             '.foo',
             '.git',
             'foo',
@@ -101,9 +101,9 @@ public function getAcceptData()
             'foo/bar.tmp',
             'test.php',
             'test.py',
-        );
+        ];
 
-        $customComparison = array(
+        $customComparison = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -116,13 +116,13 @@ public function getAcceptData()
             'test.py',
             'toto',
             'toto/.git',
-        );
+        ];
 
-        $sortByAccessedTime = array(
+        $sortByAccessedTime = [
             // For these two files the access time was set to 2005-10-15
-            array('foo/bar.tmp', 'test.php'),
+            ['foo/bar.tmp', 'test.php'],
             // These files were created more or less at the same time
-            array(
+            [
                 '.git',
                 '.foo',
                 '.foo/.bar',
@@ -132,13 +132,13 @@ public function getAcceptData()
                 'toto',
                 'toto/.git',
                 'foo bar',
-            ),
+            ],
             // This file was accessed after sleeping for 1 sec
-            array('.bar'),
-        );
+            ['.bar'],
+        ];
 
-        $sortByChangedTime = array(
-            array(
+        $sortByChangedTime = [
+            [
                 '.git',
                 '.foo',
                 '.foo/.bar',
@@ -149,13 +149,13 @@ public function getAcceptData()
                 'toto',
                 'toto/.git',
                 'foo bar',
-            ),
-            array('test.php'),
-            array('test.py'),
-        );
+            ],
+            ['test.php'],
+            ['test.py'],
+        ];
 
-        $sortByModifiedTime = array(
-            array(
+        $sortByModifiedTime = [
+            [
                 '.git',
                 '.foo',
                 '.foo/.bar',
@@ -166,18 +166,18 @@ public function getAcceptData()
                 'toto',
                 'toto/.git',
                 'foo bar',
-            ),
-            array('test.php'),
-            array('test.py'),
-        );
+            ],
+            ['test.php'],
+            ['test.py'],
+        ];
 
-        return array(
-            array(SortableIterator::SORT_BY_NAME, $this->toAbsolute($sortByName)),
-            array(SortableIterator::SORT_BY_TYPE, $this->toAbsolute($sortByType)),
-            array(SortableIterator::SORT_BY_ACCESSED_TIME, $this->toAbsolute($sortByAccessedTime)),
-            array(SortableIterator::SORT_BY_CHANGED_TIME, $this->toAbsolute($sortByChangedTime)),
-            array(SortableIterator::SORT_BY_MODIFIED_TIME, $this->toAbsolute($sortByModifiedTime)),
-            array(function (\SplFileInfo $a, \SplFileInfo $b) { return strcmp($a->getRealPath(), $b->getRealPath()); }, $this->toAbsolute($customComparison)),
-        );
+        return [
+            [SortableIterator::SORT_BY_NAME, $this->toAbsolute($sortByName)],
+            [SortableIterator::SORT_BY_TYPE, $this->toAbsolute($sortByType)],
+            [SortableIterator::SORT_BY_ACCESSED_TIME, $this->toAbsolute($sortByAccessedTime)],
+            [SortableIterator::SORT_BY_CHANGED_TIME, $this->toAbsolute($sortByChangedTime)],
+            [SortableIterator::SORT_BY_MODIFIED_TIME, $this->toAbsolute($sortByModifiedTime)],
+            [function (\SplFileInfo $a, \SplFileInfo $b) { return strcmp($a->getRealPath(), $b->getRealPath()); }, $this->toAbsolute($customComparison)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/AbstractExtension.php b/src/Symfony/Component/Form/AbstractExtension.php
index 61497aba6b62..f4ac2e5ce2b0 100644
--- a/src/Symfony/Component/Form/AbstractExtension.php
+++ b/src/Symfony/Component/Form/AbstractExtension.php
@@ -86,7 +86,7 @@ public function getTypeExtensions($name)
 
         return isset($this->typeExtensions[$name])
             ? $this->typeExtensions[$name]
-            : array();
+            : [];
     }
 
     /**
@@ -120,7 +120,7 @@ public function getTypeGuesser()
      */
     protected function loadTypes()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -130,7 +130,7 @@ protected function loadTypes()
      */
     protected function loadTypeExtensions()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -149,7 +149,7 @@ protected function loadTypeGuesser()
      */
     private function initTypes()
     {
-        $this->types = array();
+        $this->types = [];
 
         foreach ($this->loadTypes() as $type) {
             if (!$type instanceof FormTypeInterface) {
@@ -168,7 +168,7 @@ private function initTypes()
      */
     private function initTypeExtensions()
     {
-        $this->typeExtensions = array();
+        $this->typeExtensions = [];
 
         foreach ($this->loadTypeExtensions() as $extension) {
             if (!$extension instanceof FormTypeExtensionInterface) {
diff --git a/src/Symfony/Component/Form/AbstractRendererEngine.php b/src/Symfony/Component/Form/AbstractRendererEngine.php
index c56d751ec30c..649b600ddcf2 100644
--- a/src/Symfony/Component/Form/AbstractRendererEngine.php
+++ b/src/Symfony/Component/Form/AbstractRendererEngine.php
@@ -24,11 +24,11 @@ abstract class AbstractRendererEngine implements FormRendererEngineInterface
     const CACHE_KEY_VAR = 'cache_key';
 
     protected $defaultThemes;
-    protected $themes = array();
-    protected $useDefaultThemes = array();
-    protected $resources = array();
+    protected $themes = [];
+    protected $useDefaultThemes = [];
+    protected $resources = [];
 
-    private $resourceHierarchyLevels = array();
+    private $resourceHierarchyLevels = [];
 
     /**
      * Creates a new renderer engine.
@@ -36,7 +36,7 @@ abstract class AbstractRendererEngine implements FormRendererEngineInterface
      * @param array $defaultThemes The default themes. The type of these
      *                             themes is open to the implementation.
      */
-    public function __construct(array $defaultThemes = array())
+    public function __construct(array $defaultThemes = [])
     {
         $this->defaultThemes = $defaultThemes;
     }
@@ -49,7 +49,7 @@ public function setTheme(FormView $view, $themes /*, $useDefaultThemes = true */
         $cacheKey = $view->vars[self::CACHE_KEY_VAR];
 
         // Do not cast, as casting turns objects into arrays of properties
-        $this->themes[$cacheKey] = \is_array($themes) ? $themes : array($themes);
+        $this->themes[$cacheKey] = \is_array($themes) ? $themes : [$themes];
 
         $args = \func_get_args();
         $this->useDefaultThemes[$cacheKey] = isset($args[2]) ? (bool) $args[2] : true;
diff --git a/src/Symfony/Component/Form/Button.php b/src/Symfony/Component/Form/Button.php
index b72e6ae9ee0c..8ae4946c565e 100644
--- a/src/Symfony/Component/Form/Button.php
+++ b/src/Symfony/Component/Form/Button.php
@@ -132,7 +132,7 @@ public function getParent()
      *
      * @throws BadMethodCallException
      */
-    public function add($child, $type = null, array $options = array())
+    public function add($child, $type = null, array $options = [])
     {
         throw new BadMethodCallException('Buttons cannot have children.');
     }
@@ -182,7 +182,7 @@ public function remove($name)
      */
     public function all()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -190,7 +190,7 @@ public function all()
      */
     public function getErrors($deep = false, $flatten = true)
     {
-        return new FormErrorIterator($this, array());
+        return new FormErrorIterator($this, []);
     }
 
     /**
@@ -234,7 +234,7 @@ public function getViewData()
      */
     public function getExtraData()
     {
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/ButtonBuilder.php b/src/Symfony/Component/Form/ButtonBuilder.php
index 9524f68782d6..d2044f214ed5 100644
--- a/src/Symfony/Component/Form/ButtonBuilder.php
+++ b/src/Symfony/Component/Form/ButtonBuilder.php
@@ -45,7 +45,7 @@ class ButtonBuilder implements \IteratorAggregate, FormBuilderInterface
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @var array
@@ -60,7 +60,7 @@ class ButtonBuilder implements \IteratorAggregate, FormBuilderInterface
      *
      * @throws InvalidArgumentException if the name is empty
      */
-    public function __construct($name, array $options = array())
+    public function __construct($name, array $options = [])
     {
         $name = (string) $name;
         if ('' === $name) {
@@ -82,7 +82,7 @@ public function __construct($name, array $options = array())
      *
      * @throws BadMethodCallException
      */
-    public function add($child, $type = null, array $options = array())
+    public function add($child, $type = null, array $options = [])
     {
         throw new BadMethodCallException('Buttons cannot have children.');
     }
@@ -98,7 +98,7 @@ public function add($child, $type = null, array $options = array())
      *
      * @throws BadMethodCallException
      */
-    public function create($name, $type = null, array $options = array())
+    public function create($name, $type = null, array $options = [])
     {
         throw new BadMethodCallException('Buttons cannot have children.');
     }
@@ -150,7 +150,7 @@ public function has($name)
      */
     public function all()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -588,7 +588,7 @@ public function getType()
      */
     public function getViewTransformers()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -598,7 +598,7 @@ public function getViewTransformers()
      */
     public function getModelTransformers()
     {
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php b/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
index 0554304f5333..c33dda70ca6d 100644
--- a/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
+++ b/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
@@ -132,7 +132,7 @@ public function getOriginalKeys()
      */
     public function getChoicesForValues(array $values)
     {
-        $choices = array();
+        $choices = [];
 
         foreach ($values as $i => $givenValue) {
             if (array_key_exists($givenValue, $this->choices)) {
@@ -148,11 +148,11 @@ public function getChoicesForValues(array $values)
      */
     public function getValuesForChoices(array $choices)
     {
-        $values = array();
+        $values = [];
 
         // Use the value callback to compare choices by their values, if present
         if ($this->valueCallback) {
-            $givenValues = array();
+            $givenValues = [];
 
             foreach ($choices as $i => $givenChoice) {
                 $givenValues[$i] = (string) \call_user_func($this->valueCallback, $givenChoice);
@@ -190,9 +190,9 @@ public function getValuesForChoices(array $choices)
     protected function flatten(array $choices, $value, &$choicesByValues, &$keysByValues, &$structuredValues)
     {
         if (null === $choicesByValues) {
-            $choicesByValues = array();
-            $keysByValues = array();
-            $structuredValues = array();
+            $choicesByValues = [];
+            $keysByValues = [];
+            $structuredValues = [];
         }
 
         foreach ($choices as $key => $choice) {
@@ -219,7 +219,7 @@ protected function flatten(array $choices, $value, &$choicesByValues, &$keysByVa
      * @return bool returns true if the choices can be cast to strings and
      *              false otherwise
      */
-    private function castableToString(array $choices, array &$cache = array())
+    private function castableToString(array $choices, array &$cache = [])
     {
         foreach ($choices as $choice) {
             if (\is_array($choice)) {
diff --git a/src/Symfony/Component/Form/ChoiceList/Factory/CachingFactoryDecorator.php b/src/Symfony/Component/Form/ChoiceList/Factory/CachingFactoryDecorator.php
index ece33ad65c5c..477afbbb0787 100644
--- a/src/Symfony/Component/Form/ChoiceList/Factory/CachingFactoryDecorator.php
+++ b/src/Symfony/Component/Form/ChoiceList/Factory/CachingFactoryDecorator.php
@@ -27,12 +27,12 @@ class CachingFactoryDecorator implements ChoiceListFactoryInterface
     /**
      * @var ChoiceListInterface[]
      */
-    private $lists = array();
+    private $lists = [];
 
     /**
      * @var ChoiceListView[]
      */
-    private $views = array();
+    private $views = [];
 
     /**
      * Generates a SHA-256 hash for the given value.
@@ -89,7 +89,7 @@ public function createListFromChoices($choices, $value = null)
         // The value is not validated on purpose. The decorated factory may
         // decide which values to accept and which not.
 
-        $hash = self::generateHash(array($choices, $value), 'fromChoices');
+        $hash = self::generateHash([$choices, $value], 'fromChoices');
 
         if (!isset($this->lists[$hash])) {
             $this->lists[$hash] = $this->decoratedFactory->createListFromChoices($choices, $value);
@@ -103,7 +103,7 @@ public function createListFromChoices($choices, $value = null)
      */
     public function createListFromLoader(ChoiceLoaderInterface $loader, $value = null)
     {
-        $hash = self::generateHash(array($loader, $value), 'fromLoader');
+        $hash = self::generateHash([$loader, $value], 'fromLoader');
 
         if (!isset($this->lists[$hash])) {
             $this->lists[$hash] = $this->decoratedFactory->createListFromLoader($loader, $value);
@@ -119,7 +119,7 @@ public function createView(ChoiceListInterface $list, $preferredChoices = null,
     {
         // The input is not validated on purpose. This way, the decorated
         // factory may decide which input to accept and which not.
-        $hash = self::generateHash(array($list, $preferredChoices, $label, $index, $groupBy, $attr));
+        $hash = self::generateHash([$list, $preferredChoices, $label, $index, $groupBy, $attr]);
 
         if (!isset($this->views[$hash])) {
             $this->views[$hash] = $this->decoratedFactory->createView(
diff --git a/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php b/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php
index 5dfe8fcd4def..45b56881a1c5 100644
--- a/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php
+++ b/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php
@@ -47,8 +47,8 @@ public function createListFromLoader(ChoiceLoaderInterface $loader, $value = nul
      */
     public function createView(ChoiceListInterface $list, $preferredChoices = null, $label = null, $index = null, $groupBy = null, $attr = null)
     {
-        $preferredViews = array();
-        $otherViews = array();
+        $preferredViews = [];
+        $otherViews = [];
         $choices = $list->getChoices();
         $keys = $list->getOriginalKeys();
 
@@ -137,7 +137,7 @@ private static function addChoiceView($choice, $value, $label, $keys, &$index, $
             $label,
             // The attributes may be a callable or a mapping from choice indices
             // to nested arrays
-            \is_callable($attr) ? \call_user_func($attr, $choice, $key, $value) : (isset($attr[$key]) ? $attr[$key] : array())
+            \is_callable($attr) ? \call_user_func($attr, $choice, $key, $value) : (isset($attr[$key]) ? $attr[$key] : [])
         );
 
         // $isPreferred may be null if no choices are preferred
@@ -157,8 +157,8 @@ private static function addChoiceViewsGroupedBy($groupBy, $label, $choices, $key
 
             // Add the contents of groups to new ChoiceGroupView instances
             if (\is_array($value)) {
-                $preferredViewsForGroup = array();
-                $otherViewsForGroup = array();
+                $preferredViewsForGroup = [];
+                $otherViewsForGroup = [];
 
                 self::addChoiceViewsGroupedBy(
                     $value,
diff --git a/src/Symfony/Component/Form/ChoiceList/Loader/CallbackChoiceLoader.php b/src/Symfony/Component/Form/ChoiceList/Loader/CallbackChoiceLoader.php
index b2825051afda..07c048bba1a4 100644
--- a/src/Symfony/Component/Form/ChoiceList/Loader/CallbackChoiceLoader.php
+++ b/src/Symfony/Component/Form/ChoiceList/Loader/CallbackChoiceLoader.php
@@ -56,7 +56,7 @@ public function loadChoicesForValues(array $values, $value = null)
     {
         // Optimize
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -69,7 +69,7 @@ public function loadValuesForChoices(array $choices, $value = null)
     {
         // Optimize
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getValuesForChoices($choices);
diff --git a/src/Symfony/Component/Form/ChoiceList/View/ChoiceGroupView.php b/src/Symfony/Component/Form/ChoiceList/View/ChoiceGroupView.php
index 17546182d544..dd80486c9ace 100644
--- a/src/Symfony/Component/Form/ChoiceList/View/ChoiceGroupView.php
+++ b/src/Symfony/Component/Form/ChoiceList/View/ChoiceGroupView.php
@@ -27,7 +27,7 @@ class ChoiceGroupView implements \IteratorAggregate
      * @param string                         $label   The label of the group
      * @param ChoiceGroupView[]|ChoiceView[] $choices the choice views in the group
      */
-    public function __construct($label, array $choices = array())
+    public function __construct($label, array $choices = [])
     {
         $this->label = $label;
         $this->choices = $choices;
diff --git a/src/Symfony/Component/Form/ChoiceList/View/ChoiceListView.php b/src/Symfony/Component/Form/ChoiceList/View/ChoiceListView.php
index add892aab69f..586269b51637 100644
--- a/src/Symfony/Component/Form/ChoiceList/View/ChoiceListView.php
+++ b/src/Symfony/Component/Form/ChoiceList/View/ChoiceListView.php
@@ -31,7 +31,7 @@ class ChoiceListView
      * @param ChoiceGroupView[]|ChoiceView[] $choices          The choice views
      * @param ChoiceGroupView[]|ChoiceView[] $preferredChoices the preferred choice views
      */
-    public function __construct(array $choices = array(), array $preferredChoices = array())
+    public function __construct(array $choices = [], array $preferredChoices = [])
     {
         $this->choices = $choices;
         $this->preferredChoices = $preferredChoices;
diff --git a/src/Symfony/Component/Form/ChoiceList/View/ChoiceView.php b/src/Symfony/Component/Form/ChoiceList/View/ChoiceView.php
index 8feed2106e27..83326a7ac128 100644
--- a/src/Symfony/Component/Form/ChoiceList/View/ChoiceView.php
+++ b/src/Symfony/Component/Form/ChoiceList/View/ChoiceView.php
@@ -35,7 +35,7 @@ class ChoiceView
      * @param string $label The label displayed to humans
      * @param array  $attr  Additional attributes for the HTML tag
      */
-    public function __construct($data, $value, $label, array $attr = array())
+    public function __construct($data, $value, $label, array $attr = [])
     {
         $this->data = $data;
         $this->value = $value;
diff --git a/src/Symfony/Component/Form/Command/DebugCommand.php b/src/Symfony/Component/Form/Command/DebugCommand.php
index 7ad84d8701c0..49b2f1fe12dd 100644
--- a/src/Symfony/Component/Form/Command/DebugCommand.php
+++ b/src/Symfony/Component/Form/Command/DebugCommand.php
@@ -38,7 +38,7 @@ class DebugCommand extends Command
     private $extensions;
     private $guessers;
 
-    public function __construct(FormRegistryInterface $formRegistry, array $namespaces = array('Symfony\Component\Form\Extension\Core\Type'), array $types = array(), array $extensions = array(), array $guessers = array())
+    public function __construct(FormRegistryInterface $formRegistry, array $namespaces = ['Symfony\Component\Form\Extension\Core\Type'], array $types = [], array $extensions = [], array $guessers = [])
     {
         parent::__construct();
 
@@ -55,11 +55,11 @@ public function __construct(FormRegistryInterface $formRegistry, array $namespac
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('class', InputArgument::OPTIONAL, 'The form type class'),
                 new InputArgument('option', InputArgument::OPTIONAL, 'The form type option'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt or json)', 'txt'),
-            ))
+            ])
             ->setDescription('Displays form type information')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays information about form types.
@@ -139,7 +139,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
     private function getFqcnTypeClass(InputInterface $input, SymfonyStyle $io, $shortClassName)
     {
-        $classes = array();
+        $classes = [];
         sort($this->namespaces);
         foreach ($this->namespaces as $namespace) {
             if (class_exists($fqcn = $namespace.'\\'.$shortClassName)) {
@@ -186,7 +186,7 @@ private function getCoreTypes()
 
     private function findAlternatives($name, array $collection)
     {
-        $alternatives = array();
+        $alternatives = [];
         foreach ($collection as $item) {
             $lev = levenshtein($name, $item);
             if ($lev <= \strlen($name) / 3 || false !== strpos($item, $name)) {
diff --git a/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php b/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
index bfa4302da221..79f66a08d59c 100644
--- a/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
+++ b/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
@@ -32,20 +32,20 @@ abstract class Descriptor implements DescriptorInterface
     /** @var OutputStyle */
     protected $output;
     protected $type;
-    protected $ownOptions = array();
-    protected $overriddenOptions = array();
-    protected $parentOptions = array();
-    protected $extensionOptions = array();
-    protected $requiredOptions = array();
-    protected $parents = array();
-    protected $extensions = array();
+    protected $ownOptions = [];
+    protected $overriddenOptions = [];
+    protected $parentOptions = [];
+    protected $extensionOptions = [];
+    protected $requiredOptions = [];
+    protected $parents = [];
+    protected $extensions = [];
 
     /**
      * {@inheritdoc}
      */
-    public function describe(OutputInterface $output, $object, array $options = array())
+    public function describe(OutputInterface $output, $object, array $options = [])
     {
-        $this->output = $output instanceof OutputStyle ? $output : new SymfonyStyle(new ArrayInput(array()), $output);
+        $this->output = $output instanceof OutputStyle ? $output : new SymfonyStyle(new ArrayInput([]), $output);
 
         switch (true) {
             case null === $object:
@@ -64,14 +64,14 @@ public function describe(OutputInterface $output, $object, array $options = arra
 
     abstract protected function describeDefaults(array $options);
 
-    abstract protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = array());
+    abstract protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = []);
 
     abstract protected function describeOption(OptionsResolver $optionsResolver, array $options);
 
     protected function collectOptions(ResolvedFormTypeInterface $type)
     {
-        $this->parents = array();
-        $this->extensions = array();
+        $this->parents = [];
+        $this->extensions = [];
 
         if (null !== $type->getParent()) {
             $optionsResolver = clone $this->getParentOptionsResolver($type->getParent());
@@ -83,7 +83,7 @@ protected function collectOptions(ResolvedFormTypeInterface $type)
         $this->ownOptions = array_diff($ownOptionsResolver->getDefinedOptions(), $optionsResolver->getDefinedOptions());
         $overriddenOptions = array_intersect(array_merge($ownOptionsResolver->getDefinedOptions(), $ownOptionsResolver->getUndefinedOptions()), $optionsResolver->getDefinedOptions());
 
-        $this->parentOptions = array();
+        $this->parentOptions = [];
         foreach ($this->parents as $class => $parentOptions) {
             $this->overriddenOptions[$class] = array_intersect($overriddenOptions, $parentOptions);
             $this->parentOptions[$class] = array_diff($parentOptions, $overriddenOptions);
@@ -91,7 +91,7 @@ protected function collectOptions(ResolvedFormTypeInterface $type)
 
         $type->getInnerType()->configureOptions($optionsResolver);
         $this->collectTypeExtensionsOptions($type, $optionsResolver);
-        $this->extensionOptions = array();
+        $this->extensionOptions = [];
         foreach ($this->extensions as $class => $extensionOptions) {
             $this->overriddenOptions[$class] = array_intersect($overriddenOptions, $extensionOptions);
             $this->extensionOptions[$class] = array_diff($extensionOptions, $overriddenOptions);
@@ -108,17 +108,17 @@ protected function collectOptions(ResolvedFormTypeInterface $type)
 
     protected function getOptionDefinition(OptionsResolver $optionsResolver, $option)
     {
-        $definition = array('required' => $optionsResolver->isRequired($option));
+        $definition = ['required' => $optionsResolver->isRequired($option)];
 
         $introspector = new OptionsResolverIntrospector($optionsResolver);
 
-        $map = array(
+        $map = [
             'default' => 'getDefault',
             'lazy' => 'getLazyClosures',
             'allowedTypes' => 'getAllowedTypes',
             'allowedValues' => 'getAllowedValues',
             'normalizer' => 'getNormalizer',
-        );
+        ];
 
         foreach ($map as $key => $method) {
             try {
@@ -133,7 +133,7 @@ protected function getOptionDefinition(OptionsResolver $optionsResolver, $option
 
     private function getParentOptionsResolver(ResolvedFormTypeInterface $type)
     {
-        $this->parents[$class = \get_class($type->getInnerType())] = array();
+        $this->parents[$class = \get_class($type->getInnerType())] = [];
 
         if (null !== $type->getParent()) {
             $optionsResolver = clone $this->getParentOptionsResolver($type->getParent());
diff --git a/src/Symfony/Component/Form/Console/Descriptor/JsonDescriptor.php b/src/Symfony/Component/Form/Console/Descriptor/JsonDescriptor.php
index 8e5a03e9ca93..d602a15f7776 100644
--- a/src/Symfony/Component/Form/Console/Descriptor/JsonDescriptor.php
+++ b/src/Symfony/Component/Form/Console/Descriptor/JsonDescriptor.php
@@ -31,26 +31,26 @@ protected function describeDefaults(array $options)
         $this->writeData($data, $options);
     }
 
-    protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = array())
+    protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = [])
     {
         $this->collectOptions($resolvedFormType);
 
-        $formOptions = array(
+        $formOptions = [
             'own' => $this->ownOptions,
             'overridden' => $this->overriddenOptions,
             'parent' => $this->parentOptions,
             'extension' => $this->extensionOptions,
             'required' => $this->requiredOptions,
-        );
+        ];
         $this->sortOptions($formOptions);
 
-        $data = array(
+        $data = [
             'class' => \get_class($resolvedFormType->getInnerType()),
             'block_prefix' => $resolvedFormType->getInnerType()->getBlockPrefix(),
             'options' => $formOptions,
             'parent_types' => $this->parents,
             'type_extensions' => $this->extensions,
-        );
+        ];
 
         $this->writeData($data, $options);
     }
@@ -59,12 +59,12 @@ protected function describeOption(OptionsResolver $optionsResolver, array $optio
     {
         $definition = $this->getOptionDefinition($optionsResolver, $options['option']);
 
-        $map = array(
+        $map = [
             'required' => 'required',
             'default' => 'default',
             'allowed_types' => 'allowedTypes',
             'allowed_values' => 'allowedValues',
-        );
+        ];
         foreach ($map as $label => $name) {
             if (array_key_exists($name, $definition)) {
                 $data[$label] = $definition[$name];
diff --git a/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php b/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
index ac8a8bb232ff..015caf13ad35 100644
--- a/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
@@ -43,29 +43,29 @@ protected function describeDefaults(array $options)
         $this->output->listing($options['guessers']);
     }
 
-    protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = array())
+    protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = [])
     {
         $this->collectOptions($resolvedFormType);
 
-        $formOptions = $this->normalizeAndSortOptionsColumns(array_filter(array(
+        $formOptions = $this->normalizeAndSortOptionsColumns(array_filter([
             'own' => $this->ownOptions,
             'overridden' => $this->overriddenOptions,
             'parent' => $this->parentOptions,
             'extension' => $this->extensionOptions,
-        )));
+        ]));
 
         // setting headers and column order
-        $tableHeaders = array_intersect_key(array(
+        $tableHeaders = array_intersect_key([
             'own' => 'Options',
             'overridden' => 'Overridden options',
             'parent' => 'Parent options',
             'extension' => 'Extension options',
-        ), $formOptions);
+        ], $formOptions);
 
-        $tableRows = array();
+        $tableRows = [];
         $count = \count(max($formOptions));
         for ($i = 0; $i < $count; ++$i) {
-            $cells = array();
+            $cells = [];
             foreach (array_keys($tableHea
10000
ders) as $group) {
                 if (isset($formOptions[$group][$i])) {
                     $option = $formOptions[$group][$i];
@@ -101,27 +101,27 @@ protected function describeOption(OptionsResolver $optionsResolver, array $optio
         $definition = $this->getOptionDefinition($optionsResolver, $options['option']);
 
         $dump = $this->getDumpFunction();
-        $map = array(
+        $map = [
             'Required' => 'required',
             'Default' => 'default',
             'Allowed types' => 'allowedTypes',
             'Allowed values' => 'allowedValues',
             'Normalizer' => 'normalizer',
-        );
-        $rows = array();
+        ];
+        $rows = [];
         foreach ($map as $label => $name) {
             $value = array_key_exists($name, $definition) ? $dump($definition[$name]) : '-';
             if ('default' === $name && isset($definition['lazy'])) {
                 $value = "Value: $value\n\nClosure(s): ".$dump($definition['lazy']);
             }
 
-            $rows[] = array("<info>$label</info>", $value);
+            $rows[] = ["<info>$label</info>", $value];
             $rows[] = new TableSeparator();
         }
         array_pop($rows);
 
         $this->output->title(sprintf('%s (%s)', \get_class($options['type']), $options['option']));
-        $this->output->table(array(), $rows);
+        $this->output->table([], $rows);
     }
 
     private function normalizeAndSortOptionsColumns(array $options)
@@ -138,7 +138,7 @@ private function normalizeAndSortOptionsColumns(array $options)
                 }
 
                 if (!$sorted) {
-                    $options[$group] = array();
+                    $options[$group] = [];
                 } else {
                     $options[$group][] = null;
                 }
@@ -161,15 +161,15 @@ private function normalizeAndSortOptionsColumns(array $options)
     private function getDumpFunction()
     {
         $cloner = new VarCloner();
-        $cloner->addCasters(array('Closure' => function ($c, $a) {
+        $cloner->addCasters(['Closure' => function ($c, $a) {
             $prefix = Caster::PREFIX_VIRTUAL;
 
-            return array(
+            return [
                 $prefix.'parameters' => isset($a[$prefix.'parameters']) ? \count($a[$prefix.'parameters']->value) : 0,
                 $prefix.'file' => $a[$prefix.'file'],
                 $prefix.'line' => $a[$prefix.'line'],
-            );
-        }));
+            ];
+        }]);
         $dumper = new CliDumper(null, null, CliDumper::DUMP_LIGHT_ARRAY | CliDumper::DUMP_COMMA_SEPARATOR);
         $dumper->setColors($this->output->isDecorated());
 
diff --git a/src/Symfony/Component/Form/DependencyInjection/FormPass.php b/src/Symfony/Component/Form/DependencyInjection/FormPass.php
index 778d2b9ed036..a398ad5fedf3 100644
--- a/src/Symfony/Component/Form/DependencyInjection/FormPass.php
+++ b/src/Symfony/Component/Form/DependencyInjection/FormPass.php
@@ -51,7 +51,7 @@ public function process(ContainerBuilder $container)
         }
 
         $definition = $container->getDefinition($this->formExtensionService);
-        if (new IteratorArgument(array()) != $definition->getArgument(2)) {
+        if (new IteratorArgument([]) != $definition->getArgument(2)) {
             return;
         }
         $definition->replaceArgument(0, $this->processFormTypes($container));
@@ -62,8 +62,8 @@ public function process(ContainerBuilder $container)
     private function processFormTypes(ContainerBuilder $container)
     {
         // Get service locator argument
-        $servicesMap = array();
-        $namespaces = array('Symfony\Component\Form\Extension\Core\Type' => true);
+        $servicesMap = [];
+        $namespaces = ['Symfony\Component\Form\Extension\Core\Type' => true];
 
         // Builds an array with fully-qualified type class names as keys and service IDs as values
         foreach ($container->findTaggedServiceIds($this->formTypeTag, true) as $serviceId => $tag) {
@@ -84,8 +84,8 @@ private function processFormTypes(ContainerBuilder $container)
 
     private function processFormTypeExtensions(ContainerBuilder $container)
     {
-        $typeExtensions = array();
-        $typeExtensionsClasses = array();
+        $typeExtensions = [];
+        $typeExtensionsClasses = [];
         foreach ($this->findAndSortTaggedServices($this->formTypeExtensionTag, $container) as $reference) {
             $serviceId = (string) $reference;
             $serviceDefinition = $container->getDefinition($serviceId);
@@ -115,8 +115,8 @@ private function processFormTypeExtensions(ContainerBuilder $container)
 
     private function processFormTypeGuessers(ContainerBuilder $container)
     {
-        $guessers = array();
-        $guessersClasses = array();
+        $guessers = [];
+        $guessersClasses = [];
         foreach ($container->findTaggedServiceIds($this->formTypeGuesserTag, true) as $serviceId => $tags) {
             $guessers[] = new Reference($serviceId);
 
diff --git a/src/Symfony/Component/Form/Extension/Core/CoreExtension.php b/src/Symfony/Component/Form/Extension/Core/CoreExtension.php
index 5b01e9e90acd..4eb980bf9cdf 100644
--- a/src/Symfony/Component/Form/Extension/Core/CoreExtension.php
+++ b/src/Symfony/Component/Form/Extension/Core/CoreExtension.php
@@ -41,7 +41,7 @@ public function __construct(PropertyAccessorInterface $propertyAccessor = null,
 
     protected function loadTypes()
     {
-        return array(
+        return [
             new Type\FormType($this->propertyAccessor),
             new Type\BirthdayType(),
             new Type\CheckboxType(),
@@ -76,13 +76,13 @@ protected function loadTypes()
             new Type\CurrencyType(),
             new Type\TelType(),
             new Type\ColorType(),
-        );
+        ];
     }
 
     protected function loadTypeExtensions()
     {
-        return array(
+        return [
             new TransformationFailureExtension($this->translator),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Core/DataMapper/CheckboxListMapper.php b/src/Symfony/Component/Form/Extension/Core/DataMapper/CheckboxListMapper.php
index 5e2101022278..ddc771fe25ae 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataMapper/CheckboxListMapper.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataMapper/CheckboxListMapper.php
@@ -31,7 +31,7 @@ class CheckboxListMapper implements DataMapperInterface
     public function mapDataToForms($choices, $checkboxes)
     {
         if (null === $choices) {
-            $choices = array();
+            $choices = [];
         }
 
         if (!\is_array($choices)) {
@@ -53,7 +53,7 @@ public function mapFormsToData($checkboxes, &$choices)
             throw new UnexpectedTypeException($choices, 'array');
         }
 
-        $values = array();
+        $values = [];
 
         foreach ($checkboxes as $checkbox) {
             if ($checkbox->getData()) {
diff --git a/src/Symfony/Component/Form/Extension/Core/DataMapper/PropertyPathMapper.php b/src/Symfony/Component/Form/Extension/Core/DataMapper/PropertyPathMapper.php
index 9e86310b2239..92187d772ccc 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataMapper/PropertyPathMapper.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataMapper/PropertyPathMapper.php
@@ -35,7 +35,7 @@ public function __construct(PropertyAccessorInterface $propertyAccessor = null)
      */
     public function mapDataToForms($data, $forms)
     {
-        $empty = null === $data || array() === $data;
+        $empty = null === $data || [] === $data;
 
         if (!$empty && !\is_array($data) && !\is_object($data)) {
             throw new UnexpectedTypeException($data, 'object, array or empty');
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/ArrayToPartsTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/ArrayToPartsTransformer.php
index b09fba8532d4..2879dffdbc46 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/ArrayToPartsTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/ArrayToPartsTransformer.php
@@ -29,14 +29,14 @@ public function __construct(array $partMapping)
     public function transform($array)
     {
         if (null === $array) {
-            $array = array();
+            $array = [];
         }
 
         if (!\is_array($array)) {
             throw new TransformationFailedException('Expected an array.');
         }
 
-        $result = array();
+        $result = [];
 
         foreach ($this->partMapping as $partKey => $originalKeys) {
             if (empty($array)) {
@@ -55,8 +55,8 @@ public function reverseTransform($array)
             throw new TransformationFailedException('Expected an array.');
         }
 
-        $result = array();
-        $emptyKeys = array();
+        $result = [];
+        $emptyKeys = [];
 
         foreach ($this->partMapping as $partKey => $originalKeys) {
             if (!empty($array[$partKey])) {
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/BaseDateTimeTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/BaseDateTimeTransformer.php
index 46265828f233..845ba88f0495 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/BaseDateTimeTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/BaseDateTimeTransformer.php
@@ -17,13 +17,13 @@
 
 abstract class BaseDateTimeTransformer implements DataTransformerInterface
 {
-    protected static $formats = array(
+    protected static $formats = [
         \IntlDateFormatter::NONE,
         \IntlDateFormatter::FULL,
         \IntlDateFormatter::LONG,
         \IntlDateFormatter::MEDIUM,
         \IntlDateFormatter::SHORT,
-    );
+    ];
 
     protected $inputTimezone;
 
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/ChoiceToValueTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/ChoiceToValueTransformer.php
index 1154ad08a593..fae30857fff8 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/ChoiceToValueTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/ChoiceToValueTransformer.php
@@ -29,7 +29,7 @@ public function __construct(ChoiceListInterface $choiceList)
 
     public function transform($choice)
     {
-        return (string) current($this->choiceList->getValuesForChoices(array($choice)));
+        return (string) current($this->choiceList->getValuesForChoices([$choice]));
     }
 
     public function reverseTransform($value)
@@ -38,7 +38,7 @@ public function reverseTransform($value)
             throw new TransformationFailedException('Expected a string or null.');
         }
 
-        $choices = $this->choiceList->getChoicesForValues(array((string) $value));
+        $choices = $this->choiceList->getChoicesForValues([(string) $value]);
 
         if (1 !== \count($choices)) {
             if (null === $value || '' === $value) {
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/ChoicesToValuesTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/ChoicesToValuesTransformer.php
index 835d51cddbb3..ac2108f0c43a 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/ChoicesToValuesTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/ChoicesToValuesTransformer.php
@@ -35,7 +35,7 @@ public function __construct(ChoiceListInterface $choiceList)
     public function transform($array)
     {
         if (null === $array) {
-            return array();
+            return [];
         }
 
         if (!\is_array($array)) {
@@ -55,7 +55,7 @@ public function transform($array)
     public function reverseTransform($array)
     {
         if (null === $array) {
-            return array();
+            return [];
         }
 
         if (!\is_array($array)) {
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateIntervalToArrayTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateIntervalToArrayTransformer.php
index e194ec4f74a1..7cf2de51fef7 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateIntervalToArrayTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateIntervalToArrayTransformer.php
@@ -30,7 +30,7 @@ class DateIntervalToArrayTransformer implements DataTransformerInterface
     const SECONDS = 'seconds';
     const INVERT = 'invert';
 
-    private static $availableFields = array(
+    private static $availableFields = [
         self::YEARS => 'y',
         self::MONTHS => 'm',
         self::DAYS => 'd',
@@ -38,7 +38,7 @@ class DateIntervalToArrayTransformer implements DataTransformerInterface
         self::MINUTES => 'i',
         self::SECONDS => 's',
         self::INVERT => 'r',
-    );
+    ];
     private $fields;
     private $pad;
 
@@ -49,7 +49,7 @@ class DateIntervalToArrayTransformer implements DataTransformerInterface
     public function __construct(array $fields = null, $pad = false)
     {
         if (null === $fields) {
-            $fields = array('years', 'months', 'days', 'hours', 'minutes', 'seconds', 'invert');
+            $fields = ['years', 'months', 'days', 'hours', 'minutes', 'seconds', 'invert'];
         }
         $this->fields = $fields;
         $this->pad = (bool) $pad;
@@ -68,7 +68,7 @@ public function transform($dateInterval)
     {
         if (null === $dateInterval) {
             return array_intersect_key(
-                array(
+                [
                     'years' => '',
                     'months' => '',
                     'weeks' => '',
@@ -77,14 +77,14 @@ public function transform($dateInterval)
                     'minutes' => '',
                     'seconds' => '',
                     'invert' => false,
-                ),
+                ],
                 array_flip($this->fields)
             );
         }
         if (!$dateInterval instanceof \DateInterval) {
             throw new UnexpectedTypeException($dateInterval, '\DateInterval');
         }
-        $result = array();
+        $result = [];
         foreach (self::$availableFields as $field => $char) {
             $result[$field] = $dateInterval->format('%'.($this->pad ? strtoupper($char) : $char));
         }
@@ -122,7 +122,7 @@ public function reverseTransform($value)
         if ('' === implode('', $value)) {
             return;
         }
-        $emptyFields = array();
+        $emptyFields = [];
         foreach ($this->fields as $field) {
             if (!isset($value[$field])) {
                 $emptyFields[] = $field;
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToArrayTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToArrayTransformer.php
index 28b19547b4c2..5249ed30bf93 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToArrayTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToArrayTransformer.php
@@ -39,7 +39,7 @@ public function __construct($inputTimezone = null, $outputTimezone = null, array
         parent::__construct($inputTimezone, $outputTimezone);
 
         if (null === $fields) {
-            $fields = array('year', 'month', 'day', 'hour', 'minute', 'second');
+            $fields = ['year', 'month', 'day', 'hour', 'minute', 'second'];
         }
 
         $this->fields = $fields;
@@ -58,14 +58,14 @@ public function __construct($inputTimezone = null, $outputTimezone = null, array
     public function transform($dateTime)
     {
         if (null === $dateTime) {
-            return array_intersect_key(array(
+            return array_intersect_key([
                 'year' => '',
                 'month' => '',
                 'day' => '',
                 'hour' => '',
                 'minute' => '',
                 'second' => '',
-            ), array_flip($this->fields));
+            ], array_flip($this->fields));
         }
 
         if (!$dateTime instanceof \DateTimeInterface) {
@@ -80,14 +80,14 @@ public function transform($dateTime)
             $dateTime = $dateTime->setTimezone(new \DateTimeZone($this->outputTimezone));
         }
 
-        $result = array_intersect_key(array(
+        $result = array_intersect_key([
             'year' => $dateTime->format('Y'),
             'month' => $dateTime->format('m'),
             'day' => $dateTime->format('d'),
             'hour' => $dateTime->format('H'),
             'minute' => $dateTime->format('i'),
             'second' => $dateTime->format('s'),
-        ), array_flip($this->fields));
+        ], array_flip($this->fields));
 
         if (!$this->pad) {
             foreach ($result as &$entry) {
@@ -125,7 +125,7 @@ public function reverseTransform($value)
             return;
         }
 
-        $emptyFields = array();
+        $emptyFields = [];
 
         foreach ($this->fields as $field) {
             if (!isset($value[$field])) {
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeZoneToStringTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeZoneToStringTransformer.php
index cd3ac47b28b9..32fa5d1129d5 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeZoneToStringTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeZoneToStringTransformer.php
@@ -42,7 +42,7 @@ public function transform($dateTimeZone)
                 throw new TransformationFailedException('Expected an array.');
             }
 
-            return array_map(array(new self(), 'transform'), $dateTimeZone);
+            return array_map([new self(), 'transform'], $dateTimeZone);
         }
 
         if (!$dateTimeZone instanceof \DateTimeZone) {
@@ -66,7 +66,7 @@ public function reverseTransform($value)
                 throw new TransformationFailedException('Expected an array.');
             }
 
-            return array_map(array(new self(), 'reverseTransform'), $value);
+            return array_map([new self(), 'reverseTransform'], $value);
         }
 
         if (!\is_string($value)) {
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php
index 3e125bc82be3..638885e4226e 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php
@@ -121,7 +121,7 @@ public function transform($value)
         }
 
         // Convert non-breaking and narrow non-breaking spaces to normal ones
-        $value = str_replace(array("\xc2\xa0", "\xe2\x80\xaf"), ' ', $value);
+        $value = str_replace(["\xc2\xa0", "\xe2\x80\xaf"], ' ', $value);
 
         return $value;
     }
@@ -146,7 +146,7 @@ public function reverseTransform($value)
             return;
         }
 
-        if (\in_array($value, array('NaN', 'NAN', 'nan'), true)) {
+        if (\in_array($value, ['NaN', 'NAN', 'nan'], true)) {
             throw new TransformationFailedException('"NaN" is not a valid number');
         }
 
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/PercentToLocalizedStringTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/PercentToLocalizedStringTransformer.php
index 170c2b3d1123..b01a8d204c9b 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/PercentToLocalizedStringTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/PercentToLocalizedStringTransformer.php
@@ -26,10 +26,10 @@ class PercentToLocalizedStringTransformer implements DataTransformerInterface
     const FRACTIONAL = 'fractional';
     const INTEGER = 'integer';
 
-    protected static $types = array(
+    protected static $types = [
         self::FRACTIONAL,
         self::INTEGER,
-    );
+    ];
 
     private $type;
     private $scale;
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php
index 49032a6777c8..72e34f454460 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/ValueToDuplicatesTransformer.php
@@ -35,7 +35,7 @@ public function __construct(array $keys)
      */
     public function transform($value)
     {
-        $result = array();
+        $result = [];
 
         foreach ($this->keys as $key) {
             $result[$key] = $value;
@@ -59,10 +59,10 @@ public function reverseTransform($array)
         }
 
         $result = current($array);
-        $emptyKeys = array();
+        $emptyKeys = [];
 
         foreach ($this->keys as $key) {
-            if (isset($array[$key]) && '' !== $array[$key] && false !== $array[$key] && array() !== $array[$key]) {
+            if (isset($array[$key]) && '' !== $array[$key] && false !== $array[$key] && [] !== $array[$key]) {
                 if ($array[$key] !== $result) {
                     throw new TransformationFailedException('All values in the array should be the same');
                 }
diff --git a/src/Symfony/Component/Form/Extension/Core/EventListener/FixUrlProtocolListener.php b/src/Symfony/Component/Form/Extension/Core/EventListener/FixUrlProtocolListener.php
index 2ad44caba8bf..8af36f6bd7c4 100644
--- a/src/Symfony/Component/Form/Extension/Core/EventListener/FixUrlProtocolListener.php
+++ b/src/Symfony/Component/Form/Extension/Core/EventListener/FixUrlProtocolListener.php
@@ -43,6 +43,6 @@ public function onSubmit(FormEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(FormEvents::SUBMIT => 'onSubmit');
+        return [FormEvents::SUBMIT => 'onSubmit'];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Core/EventListener/MergeCollectionListener.php b/src/Symfony/Component/Form/Extension/Core/EventListener/MergeCollectionListener.php
index f8405e1a1af2..71f47ae97442 100644
--- a/src/Symfony/Component/Form/Extension/Core/EventListener/MergeCollectionListener.php
+++ b/src/Symfony/Component/Form/Extension/Core/EventListener/MergeCollectionListener.php
@@ -36,9 +36,9 @@ public function __construct($allowAdd = false, $allowDelete = false)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             FormEvents::SUBMIT => 'onSubmit',
-        );
+        ];
     }
 
     public function onSubmit(FormEvent $event)
@@ -47,7 +47,7 @@ public function onSubmit(FormEvent $event)
         $data = $event->getData();
 
         if (null === $data) {
-            $data = array();
+            $data = [];
         }
 
         if (!\is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
@@ -73,7 +73,7 @@ public function onSubmit(FormEvent $event)
         } else {
             // Calculate delta
             $itemsToAdd = \is_object($data) ? clone $data : $data;
-            $itemsToDelete = array();
+            $itemsToDelete = [];
 
             foreach ($dataToMergeInto as $beforeKey => $beforeItem) {
                 foreach ($data as $afterKey => $afterItem) {
diff --git a/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php b/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
index 3ef78741e314..23bdbef38462 100644
--- a/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
+++ b/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
@@ -38,7 +38,7 @@ class ResizeFormListener implements EventSubscriberInterface
      * @param bool          $allowDelete Whether children could be removed from the group
      * @param bool|callable $deleteEmpty
      */
-    public function __construct($type, array $options = array(), $allowAdd = false, $allowDelete = false, $deleteEmpty = false)
+    public function __construct($type, array $options = [], $allowAdd = false, $allowDelete = false, $deleteEmpty = false)
     {
         $this->type = $type;
         $this->allowAdd = $allowAdd;
@@ -49,12 +49,12 @@ public function __construct($type, array $options = array(), $allowAdd = false,
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             FormEvents::PRE_SET_DATA => 'preSetData',
             FormEvents::PRE_SUBMIT => 'preSubmit',
             // (MergeCollectionListener, MergeDoctrineCollectionListener)
-            FormEvents::SUBMIT => array('onSubmit', 50),
-        );
+            FormEvents::SUBMIT => ['onSubmit', 50],
+        ];
     }
 
     public function preSetData(FormEvent $event)
@@ -63,7 +63,7 @@ public function preSetData(FormEvent $event)
         $data = $event->getData();
 
         if (null === $data) {
-            $data = array();
+            $data = [];
         }
 
         if (!\is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
@@ -77,9 +77,9 @@ public function preSetData(FormEvent $event)
 
         // Then add all rows again in the correct order
         foreach ($data as $name => $value) {
-            $form->add($name, $this->type, array_replace(array(
+            $form->add($name, $this->type, array_replace([
                 'property_path' => '['.$name.']',
-            ), $this->options));
+            ], $this->options));
         }
     }
 
@@ -93,7 +93,7 @@ public function preSubmit(FormEvent $event)
         }
 
         if (!\is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
-            $data = array();
+            $data = [];
         }
 
         // Remove all empty rows
@@ -109,9 +109,9 @@ public function preSubmit(FormEvent $event)
         if ($this->allowAdd) {
             foreach ($data as $name => $value) {
                 if (!$form->has($name)) {
-                    $form->add($name, $this->type, array_replace(array(
+                    $form->add($name, $this->type, array_replace([
                         'property_path' => '['.$name.']',
-                    ), $this->options));
+                    ], $this->options));
                 }
             }
         }
@@ -127,7 +127,7 @@ public function onSubmit(FormEvent $event)
         // entries, so we need to manually unset removed entries in the collection.
 
         if (null === $data) {
-            $data = array();
+            $data = [];
         }
 
         if (!\is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
@@ -153,7 +153,7 @@ public function onSubmit(FormEvent $event)
         // The data mapper only adds, but does not remove items, so do this
         // here
         if ($this->allowDelete) {
-            $toDelete = array();
+            $toDelete = [];
 
             foreach ($data as $name => $child) {
                 if (!$form->has($name)) {
diff --git a/src/Symfony/Component/Form/Extension/Core/EventListener/TransformationFailureListener.php b/src/Symfony/Component/Form/Extension/Core/EventListener/TransformationFailureListener.php
index f46eb499e0cf..835a0283150f 100644
--- a/src/Symfony/Component/Form/Extension/Core/EventListener/TransformationFailureListener.php
+++ b/src/Symfony/Component/Form/Extension/Core/EventListener/TransformationFailureListener.php
@@ -31,9 +31,9 @@ public function __construct(TranslatorInterface $translator = null)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            FormEvents::POST_SUBMIT => array('convertTransformationFailureToFormError', -1024),
-        );
+        return [
+            FormEvents::POST_SUBMIT => ['convertTransformationFailureToFormError', -1024],
+        ];
     }
 
     public function convertTransformationFailureToFormError(FormEvent $event)
@@ -54,11 +54,11 @@ public function convertTransformationFailureToFormError(FormEvent $event)
         $messageTemplate = 'The value {{ value }} is not valid.';
 
         if (null !== $this->translator) {
-            $message = $this->translator->trans($messageTemplate, array('{{ value }}' => $clientDataAsString));
+            $message = $this->translator->trans($messageTemplate, ['{{ value }}' => $clientDataAsString]);
         } else {
-            $message = strtr($messageTemplate, array('{{ value }}' => $clientDataAsString));
+            $message = strtr($messageTemplate, ['{{ value }}' => $clientDataAsString]);
         }
 
-        $form->addError(new FormError($message, $messageTemplate, array('{{ value }}' => $clientDataAsString), null, $form->getTransformationFailure()));
+        $form->addError(new FormError($message, $messageTemplate, ['{{ value }}' => $clientDataAsString], null, $form->getTransformationFailure()));
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Core/EventListener/TrimListener.php b/src/Symfony/Component/Form/Extension/Core/EventListener/TrimListener.php
index 59f1a242f8fa..be8c38a854cc 100644
--- a/src/Symfony/Component/Form/Extension/Core/EventListener/TrimListener.php
+++ b/src/Symfony/Component/Form/Extension/Core/EventListener/TrimListener.php
@@ -36,6 +36,6 @@ public function preSubmit(FormEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(FormEvents::PRE_SUBMIT => 'preSubmit');
+        return [FormEvents::PRE_SUBMIT => 'preSubmit'];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/BaseType.php b/src/Symfony/Component/Form/Extension/Core/Type/BaseType.php
index d68337e3bc8c..32825ab7af9c 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/BaseType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/BaseType.php
@@ -75,13 +75,13 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             $id = ltrim($id, '_0123456789');
         }
 
-        $blockPrefixes = array();
+        $blockPrefixes = [];
         for ($type = $form->getConfig()->getType(); null !== $type; $type = $type->getParent()) {
             array_unshift($blockPrefixes, $type->getBlockPrefix());
         }
         $blockPrefixes[] = $uniqueBlockPrefix;
 
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'form' => $view,
             'id' => $id,
             'name' => $name,
@@ -101,7 +101,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             // be rendered differently.
             // https://github.com/symfony/symfony/issues/5038
             'cache_key' => $uniqueBlockPrefix.'_'.$form->getConfig()->getType()->getBlockPrefix(),
-        ));
+        ]);
     }
 
     /**
@@ -109,15 +109,15 @@ public function buildView(FormView $view, FormInterface $form, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'block_name' => null,
             'disabled' => false,
             'label' => null,
             'label_format' => null,
-            'attr' => array(),
+            'attr' => [],
             'translation_domain' => null,
             'auto_initialize' => true,
-        ));
+        ]);
 
         $resolver->setAllowedTypes('attr', 'array');
     }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/ButtonType.php b/src/Symfony/Component/Form/Extension/Core/Type/ButtonType.php
index 3a62eb8a471a..2b60f4f31e1e 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/ButtonType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/ButtonType.php
@@ -43,8 +43,8 @@ public function configureOptions(OptionsResolver $resolver)
     {
         parent::configureOptions($resolver);
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'auto_initialize' => false,
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php b/src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php
index 1661caa07c49..19ff62c154a0 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php
@@ -40,10 +40,10 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function buildView(FormView $view, FormInterface $form, array $options)
     {
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'value' => $options['value'],
             'checked' => null !== $form->getViewData(),
-        ));
+        ]);
     }
 
     /**
@@ -55,11 +55,11 @@ public function configureOptions(OptionsResolver $resolver)
             return $viewData;
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'value' => '1',
             'empty_data' => $emptyData,
             'compound' => false,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
index 00eb88f7c360..28320ca38942 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
@@ -70,7 +70,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
 
             // Check if the choices already contain the empty value
             // Only add the placeholder option if this is not the case
-            if (null !== $options['placeholder'] && 0 === \count($choiceList->getChoicesForValues(array('')))) {
+            if (null !== $options['placeholder'] && 0 === \count($choiceList->getChoicesForValues(['']))) {
                 $placeholderView = new ChoiceView(null, '', $options['placeholder']);
 
                 // "placeholder" is a reserved name
@@ -108,7 +108,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 $unknownValues = $valueMap;
 
                 // Reconstruct the data as mapping from child names to values
-                $data = array();
+                $data = [];
 
                 /** @var FormInterface $child */
                 foreach ($form as $child) {
@@ -184,7 +184,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             ? $form->getConfig()->getAttribute('choice_list_view')
             : $this->createChoiceListView($choiceList, $options);
 
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'multiple' => $options['multiple'],
             'expanded' => $options['expanded'],
             'preferred_choices' => $choiceListView->preferredChoices,
@@ -192,7 +192,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             'separator' => '-------------------',
             'placeholder' => null,
             'choice_translation_domain' => $choiceTranslationDomain,
-        ));
+        ]);
 
         // The decision, whether a choice is selected, is potentially done
         // thousand of times during the rendering of a template. Provide a
@@ -255,7 +255,7 @@ public function configureOptions(OptionsResolver $resolver)
             }
 
             if ($options['multiple']) {
-                return array();
+                return [];
             }
 
             return '';
@@ -312,17 +312,17 @@ public function configureOptions(OptionsResolver $resolver)
             return $choiceTranslationDomain;
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'multiple' => false,
             'expanded' => false,
-            'choices' => array(),
+            'choices' => [],
             'choices_as_values' => null, // deprecated since 3.1
             'choice_loader' => null,
             'choice_label' => null,
             'choice_name' => null,
             'choice_value' => null,
             'choice_attr' => null,
-            'preferred_choices' => array(),
+            'preferred_choices' => [],
             'group_by' => null,
             'empty_data' => $emptyData,
             'placeholder' => $placeholderDefault,
@@ -334,21 +334,21 @@ public function configureOptions(OptionsResolver $resolver)
             'data_class' => null,
             'choice_translation_domain' => true,
             'trim' => false,
-        ));
+        ]);
 
         $resolver->setNormalizer('placeholder', $placeholderNormalizer);
         $resolver->setNormalizer('choice_translation_domain', $choiceTranslationDomainNormalizer);
         $resolver->setNormalizer('choices_as_values', $choicesAsValuesNormalizer);
 
-        $resolver->setAllowedTypes('choices', array('null', 'array', '\Traversable'));
-        $resolver->setAllowedTypes('choice_translation_domain', array('null', 'bool', 'string'));
-        $resolver->setAllowedTypes('choice_loader', array('null', 'Symfony\Component\Form\ChoiceList\Loader\ChoiceLoaderInterface'));
-        $resolver->setAllowedTypes('choice_label', array('null', 'bool', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('choice_name', array('null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('choice_value', array('null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('choice_attr', array('null', 'array', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('preferred_choices', array('array', '\Traversable', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('group_by', array('null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
+        $resolver->setAllowedTypes('choices', ['null', 'array', '\Traversable']);
+        $resolver->setAllowedTypes('choice_translation_domain', ['null', 'bool', 'string']);
+        $resolver->setAllowedTypes('choice_loader', ['null', 'Symfony\Component\Form\ChoiceList\Loader\ChoiceLoaderInterface']);
+        $resolver->setAllowedTypes('choice_label', ['null', 'bool', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('choice_name', ['null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('choice_value', ['null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('choice_attr', ['null', 'array', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('preferred_choices', ['array', '\Traversable', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('group_by', ['null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
     }
 
     /**
@@ -385,13 +385,13 @@ private function addSubForms(FormBuilderInterface $builder, array $choiceViews,
      */
     private function addSubForm(FormBuilderInterface $builder, $name, ChoiceView $choiceView, array $options)
     {
-        $choiceOpts = array(
+        $choiceOpts = [
             'value' => $choiceView->value,
             'label' => $choiceView->label,
             'attr' => $choiceView->attr,
             'translation_domain' => $options['translation_domain'],
             'block_name' => 'entry',
-        );
+        ];
 
         if ($options['multiple']) {
             $choiceType = __NAMESPACE__.'\CheckboxType';
@@ -415,7 +415,7 @@ private function createChoiceList(array $options)
         }
 
         // Harden against NULL values (like in EntityType and ModelType)
-        $choices = null !== $options['choices'] ? $options['choices'] : array();
+        $choices = null !== $options['choices'] ? $options['choices'] : [];
 
         return $this->choiceListFactory->createListFromChoices($choices, $options['choice_value']);
     }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php b/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
index 1cdc99019e6d..fc36cca6da93 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
@@ -27,10 +27,10 @@ class CollectionType extends AbstractType
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
         if ($options['allow_add'] && $options['prototype']) {
-            $prototypeOptions = array_replace(array(
+            $prototypeOptions = array_replace([
                 'required' => $options['required'],
                 'label' => $options['prototype_name'].'label__',
-            ), $options['entry_options']);
+            ], $options['entry_options']);
 
             if (null !== $options['prototype_data']) {
                 $prototypeOptions['data'] = $options['prototype_data'];
@@ -56,10 +56,10 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function buildView(FormView $view, FormInterface $form, array $options)
     {
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'allow_add' => $options['allow_add'],
             'allow_delete' => $options['allow_delete'],
-        ));
+        ]);
 
         if ($form->getConfig()->hasAttribute('prototype')) {
             $prototype = $form->getConfig()->getAttribute('prototype');
@@ -88,19 +88,19 @@ public function configureOptions(OptionsResolver $resolver)
             return $value;
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'allow_add' => false,
             'allow_delete' => false,
             'prototype' => true,
             'prototype_data' => null,
             'prototype_name' => '__name__',
             'entry_type' => __NAMESPACE__.'\TextType',
-            'entry_options' => array(),
+            'entry_options' => [],
             'delete_empty' => false,
-        ));
+        ]);
 
         $resolver->setNormalizer('entry_options', $entryOptionsNormalizer);
-        $resolver->setAllowedTypes('delete_empty', array('bool', 'callable'));
+        $resolver->setAllowedTypes('delete_empty', ['bool', 'callable']);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php b/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
index 670d55f28086..c5b6b0dcf912 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
@@ -36,7 +36,7 @@ class CountryType extends AbstractType implements ChoiceLoaderInterface
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
                     @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
@@ -47,7 +47,7 @@ public function configureOptions(OptionsResolver $resolver)
                 return $this;
             },
             'choice_translation_domain' => false,
-        ));
+        ]);
     }
 
     /**
@@ -86,7 +86,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -100,7 +100,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php b/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
index 1c5526283ff9..638c2e1a62ad 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
@@ -36,7 +36,7 @@ class CurrencyType extends AbstractType implements ChoiceLoaderInterface
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
                     @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
@@ -47,7 +47,7 @@ public function configureOptions(OptionsResolver $resolver)
                 return $this;
             },
             'choice_translation_domain' => false,
-        ));
+        ]);
     }
 
     /**
@@ -86,7 +86,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -100,7 +100,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/DateIntervalType.php b/src/Symfony/Component/Form/Extension/Core/Type/DateIntervalType.php
index 29e122a7882e..181ce74993d6 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/DateIntervalType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/DateIntervalType.php
@@ -28,7 +28,7 @@
  */
 class DateIntervalType extends AbstractType
 {
-    private $timeParts = array(
+    private $timeParts = [
         'years',
         'months',
         'weeks',
@@ -36,12 +36,12 @@ class DateIntervalType extends AbstractType
         'hours',
         'minutes',
         'seconds',
-    );
-    private static $widgets = array(
+    ];
+    private static $widgets = [
         'text' => TextType::class,
         'integer' => IntegerType::class,
         'choice' => ChoiceType::class,
-    );
+    ];
 
     /**
      * {@inheritdoc}
@@ -58,7 +58,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
             throw new InvalidConfigurationException('You can not enable weeks and days fields together.');
         }
         $format = 'P';
-        $parts = array();
+        $parts = [];
         if ($options['with_years']) {
             $format .= '%yY';
             $parts[] = 'years';
@@ -98,7 +98,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         } else {
             foreach ($this->timeParts as $part) {
                 if ($options['with_'.$part]) {
-                    $childOptions = array(
+                    $childOptions = [
                         'error_bubbling' => true,
                         'label' => $options['labels'][$part],
                         // Append generic carry-along options
@@ -106,7 +106,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                         'translation_domain' => $options['translation_domain'],
                         // when compound the array entries are ignored, we need to cascade the configuration here
                         'empty_data' => isset($options['empty_data'][$part]) ? $options['empty_data'][$part] : null,
-                    );
+                    ];
                     if ('choice' === $options['widget']) {
                         $childOptions['choice_translation_domain'] = false;
                         $childOptions['choices'] = $options[$part];
@@ -124,12 +124,12 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 }
             }
             if ($options['with_invert']) {
-                $builder->add('invert', CheckboxType::class, array(
+                $builder->add('invert', CheckboxType::class, [
                     'label' => $options['labels']['invert'],
                     'error_bubbling' => true,
                     'required' => false,
                     'translation_domain' => $options['translation_domain'],
-                ));
+                ]);
             }
             $builder->addViewTransformer(new DateIntervalToArrayTransformer($parts, 'text' === $options['widget']));
         }
@@ -153,10 +153,10 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function buildView(FormView $view, FormInterface $form, array $options)
     {
-        $vars = array(
+        $vars = [
             'widget' => $options['widget'],
             'with_invert' => $options['with_invert'],
-        );
+        ];
         foreach ($this->timeParts as $part) {
             $vars['with_'.$part] = $options['with_'.$part];
         }
@@ -173,7 +173,7 @@ public function configureOptions(OptionsResolver $resolver)
             return 'single_text' !== $options['widget'];
         };
         $emptyData = function (Options $options) {
-            return 'single_text' === $options['widget'] ? '' : array();
+            return 'single_text' === $options['widget'] ? '' : [];
         };
 
         $placeholderDefault = function (Options $options) {
@@ -191,7 +191,7 @@ public function configureOptions(OptionsResolver $resolver)
         };
 
         $labelsNormalizer = function (Options $options, array $labels) {
-            return array_replace(array(
+            return array_replace([
                 'years' => null,
                 'months' => null,
                 'days' => null,
@@ -200,13 +200,13 @@ public function configureOptions(OptionsResolver $resolver)
                 'minutes' => null,
                 'seconds' => null,
                 'invert' => 'Negative interval',
-            ), array_filter($labels, function ($label) {
+            ], array_filter($labels, function ($label) {
                 return null !== $label;
             }));
         };
 
         $resolver->setDefaults(
-            array(
+            [
                 'with_years' => true,
                 'with_months' => true,
                 'with_days' => true,
@@ -234,28 +234,28 @@ public function configureOptions(OptionsResolver $resolver)
                 'data_class' => null,
                 'compound' => $compound,
                 'empty_data' => $emptyData,
-                'labels' => array(),
-            )
+                'labels' => [],
+            ]
         );
         $resolver->setNormalizer('placeholder', $placeholderNormalizer);
         $resolver->setNormalizer('labels', $labelsNormalizer);
 
         $resolver->setAllowedValues(
             'input',
-            array(
+            [
                 'dateinterval',
                 'string',
                 'array',
-            )
+            ]
         );
         $resolver->setAllowedValues(
             'widget',
-            array(
+            [
                 'single_text',
                 'text',
                 'integer',
                 'choice',
-            )
+            ]
         );
         // Don't clone \DateInterval classes, as i.e. format()
         // does not work after that
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php b/src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php
index 56d895cf00f7..04b0221fdc63 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php
@@ -38,21 +38,21 @@ class DateTimeType extends AbstractType
      */
     const HTML5_FORMAT = "yyyy-MM-dd'T'HH:mm:ss";
 
-    private static $acceptedFormats = array(
+    private static $acceptedFormats = [
         \IntlDateFormatter::FULL,
         \IntlDateFormatter::LONG,
         \IntlDateFormatter::MEDIUM,
         \IntlDateFormatter::SHORT,
-    );
+    ];
 
     /**
      * {@inheritdoc}
      */
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
-        $parts = array('year', 'month', 'day', 'hour');
-        $dateParts = array('year', 'month', 'day');
-        $timeParts = array('hour');
+        $parts = ['year', 'month', 'day', 'hour'];
+        $dateParts = ['year', 'month', 'day'];
+        $timeParts = ['hour'];
 
         if ($options['with_minutes']) {
             $parts[] = 'minute';
@@ -92,9 +92,9 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         } else {
             // when the form is compound the entries of the array are ignored in favor of children data
             // so we need to handle the cascade setting here
-            $emptyData = $builder->getEmptyData() ?: array();
+            $emptyData = $builder->getEmptyData() ?: [];
             // Only pass a subset of the options to children
-            $dateOptions = array_intersect_key($options, array_flip(array(
+            $dateOptions = array_intersect_key($options, array_flip([
                 'years',
                 'months',
                 'days',
@@ -105,13 +105,13 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 'html5',
                 'invalid_message',
                 'invalid_message_parameters',
-            )));
+            ]));
 
             if (isset($emptyData['date'])) {
                 $dateOptions['empty_data'] = $emptyData['date'];
             }
 
-            $timeOptions = array_intersect_key($options, array_flip(array(
+            $timeOptions = array_intersect_key($options, array_flip([
                 'hours',
                 'minutes',
                 'seconds',
@@ -124,7 +124,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 'html5',
                 'invalid_message',
                 'invalid_message_parameters',
-            )));
+            ]));
 
             if (isset($emptyData['time'])) {
                 $timeOptions['empty_data'] = $emptyData['time'];
@@ -151,13 +151,13 @@ public function buildForm(FormBuilderInterface $builder, array $options)
             $dateOptions['error_bubbling'] = $timeOptions['error_bubbling'] = true;
 
             $builder
-                ->addViewTransformer(new DataTransformerChain(array(
+                ->addViewTransformer(new DataTransformerChain([
                     new DateTimeToArrayTransformer($options['model_timezone'], $options['view_timezone'], $parts),
-                    new ArrayToPartsTransformer(array(
+                    new ArrayToPartsTransformer([
                         'date' => $dateParts,
                         'time' => $timeParts,
-                    )),
-                )))
+                    ]),
+                ]))
                 ->add('date', __NAMESPACE__.'\DateType', $dateOptions)
                 ->add('time', __NAMESPACE__.'\TimeType', $timeOptions)
             ;
@@ -213,7 +213,7 @@ public function configureOptions(OptionsResolver $resolver)
             return $options['widget'];
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'input' => 'datetime',
             'model_timezone' => null,
             'view_timezone' => null,
@@ -236,13 +236,13 @@ public function configureOptions(OptionsResolver $resolver)
             'data_class' => null,
             'compound' => $compound,
             'empty_data' => function (Options $options) {
-                return $options['compound'] ? array() : '';
+                return $options['compound'] ? [] : '';
             },
-        ));
+        ]);
 
         // Don't add some defaults in order to preserve the defaults
         // set in DateType and TimeType
-        $resolver->setDefined(array(
+        $resolver->setDefined([
             'placeholder',
             'choice_translation_domain',
             'years',
@@ -251,33 +251,33 @@ public function configureOptions(OptionsResolver $resolver)
             'hours',
             'minutes',
             'seconds',
-        ));
+        ]);
 
-        $resolver->setAllowedValues('input', array(
+        $resolver->setAllowedValues('input', [
             'datetime',
             'string',
             'timestamp',
             'array',
-        ));
-        $resolver->setAllowedValues('date_widget', array(
+        ]);
+        $resolver->setAllowedValues('date_widget', [
             null, // inherit default from DateType
             'single_text',
             'text',
             'choice',
-        ));
-        $resolver->setAllowedValues('time_widget', array(
+        ]);
+        $resolver->setAllowedValues('time_widget', [
             null, // inherit default from TimeType
             'single_text',
             'text',
             'choice',
-        ));
+        ]);
         // This option will overwrite "date_widget" and "time_widget" options
-        $resolver->setAllowedValues('widget', array(
+        $resolver->setAllowedValues('widget', [
             null, // default, don't overwrite options
             'single_text',
             'text',
             'choice',
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/DateType.php b/src/Symfony/Component/Form/Extension/Core/Type/DateType.php
index 7384921af433..09f5e1de5c87 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/DateType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/DateType.php
@@ -29,17 +29,17 @@ class DateType extends AbstractType
     const DEFAULT_FORMAT = \IntlDateFormatter::MEDIUM;
     const HTML5_FORMAT = 'yyyy-MM-dd';
 
-    private static $acceptedFormats = array(
+    private static $acceptedFormats = [
         \IntlDateFormatter::FULL,
         \IntlDateFormatter::LONG,
         \IntlDateFormatter::MEDIUM,
         \IntlDateFormatter::SHORT,
-    );
+    ];
 
-    private static $widgets = array(
+    private static $widgets = [
         'text' => 'Symfony\Component\Form\Extension\Core\Type\TextType',
         'choice' => 'Symfony\Component\Form\Extension\Core\Type\ChoiceType',
-    );
+    ];
 
     /**
      * {@inheritdoc}
@@ -73,13 +73,13 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 throw new InvalidOptionsException(sprintf('The "format" option should contain the letters "y", "M" and "d". Its current value is "%s".', $pattern));
             }
 
-            $yearOptions = $monthOptions = $dayOptions = array(
+            $yearOptions = $monthOptions = $dayOptions = [
                 'error_bubbling' => true,
                 'empty_data' => '',
-            );
+            ];
             // when the form is compound the entries of the array are ignored in favor of children data
             // so we need to handle the cascade setting here
-            $emptyData = $builder->getEmptyData() ?: array();
+            $emptyData = $builder->getEmptyData() ?: [];
 
             if (isset($emptyData['year'])) {
                 $yearOptions['empty_data'] = $emptyData['year'];
@@ -134,7 +134,7 @@ class_exists('IntlTimeZone', false) ? \IntlTimeZone::createDefault() : null,
             }
 
             // Append generic carry-along options
-            foreach (array('required', 'translation_domain') as $passOpt) {
+            foreach (['required', 'translation_domain'] as $passOpt) {
                 $yearOptions[$passOpt] = $monthOptions[$passOpt] = $dayOptions[$passOpt] = $options[$passOpt];
             }
 
@@ -143,7 +143,7 @@ class_exists('IntlTimeZone', false) ? \IntlTimeZone::createDefault() : null,
                 ->add('month', self::$widgets[$options['widget']], $monthOptions)
                 ->add('day', self::$widgets[$options['widget']], $dayOptions)
                 ->addViewTransformer(new DateTimeToArrayTransformer(
-                    $options['model_timezone'], $options['view_timezone'], array('year', 'month', 'day')
+                    $options['model_timezone'], $options['view_timezone'], ['year', 'month', 'day']
                 ))
                 ->setAttribute('formatter', $formatter)
             ;
@@ -159,7 +159,7 @@ class_exists('IntlTimeZone', false) ? \IntlTimeZone::createDefault() : null,
             ));
         } elseif ('array' === $options['input']) {
             $builder->addModelTransformer(new ReversedTransformer(
-                new DateTimeToArrayTransformer($options['model_timezone'], $options['model_timezone'], array('year', 'month', 'day'))
+                new DateTimeToArrayTransformer($options['model_timezone'], $options['model_timezone'], ['year', 'month', 'day'])
             ));
         }
     }
@@ -194,7 +194,7 @@ public function finishView(FormView $view, FormInterface $form, array $options)
             // set right order with respect to locale (e.g.: de_DE=dd.MM.yy; en_US=M/d/yy)
             // lookup various formats at http://userguide.icu-project.org/formatparse/datetime
             if (preg_match('/^([yMd]+)[^yMd]*([yMd]+)[^yMd]*([yMd]+)$/', $pattern)) {
-                $pattern = preg_replace(array('/y+/', '/M+/', '/d+/'), array('{{ year }}', '{{ month }}', '{{ day }}'), $pattern);
+                $pattern = preg_replace(['/y+/', '/M+/', '/d+/'], ['{{ year }}', '{{ month }}', '{{ day }}'], $pattern);
             } else {
                 // default fallback
                 $pattern = '{{ year }}{{ month }}{{ day }}';
@@ -222,16 +222,16 @@ public function configureOptions(OptionsResolver $resolver)
                 $default = $placeholderDefault($options);
 
                 return array_merge(
-                    array('year' => $default, 'month' => $default, 'day' => $default),
+                    ['year' => $default, 'month' => $default, 'day' => $default],
                     $placeholder
                 );
             }
 
-            return array(
+            return [
                 'year' => $placeholder,
                 'month' => $placeholder,
                 'day' => $placeholder,
-            );
+            ];
         };
 
         $choiceTranslationDomainNormalizer = function (Options $options, $choiceTranslationDomain) {
@@ -239,23 +239,23 @@ public function configureOptions(OptionsResolver $resolver)
                 $default = false;
 
                 return array_replace(
-                    array('year' => $default, 'month' => $default, 'day' => $default),
+                    ['year' => $default, 'month' => $default, 'day' => $default],
                     $choiceTranslationDomain
                 );
             }
 
-            return array(
+            return [
                 'year' => $choiceTranslationDomain,
                 'month' => $choiceTranslationDomain,
                 'day' => $choiceTranslationDomain,
-            );
+            ];
         };
 
         $format = function (Options $options) {
-            return 'single_text' === $options['widget'] ? DateType::HTML5_FORMAT : DateType::DEFAULT_FORMAT;
+            return 'single_text' === $options['widget'] ? self::HTML5_FORMAT : self::DEFAULT_FORMAT;
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'years' => range(date('Y') - 5, date('Y') + 5),
             'months' => range(1, 12),
             'days' => range(1, 31),
@@ -277,27 +277,27 @@ public function configureOptions(OptionsResolver $resolver)
             'data_class' => null,
             'compound' => $compound,
             'empty_data' => function (Options $options) {
-                return $options['compound'] ? array() : '';
+                return $options['compound'] ? [] : '';
             },
             'choice_translation_domain' => false,
-        ));
+        ]);
 
         $resolver->setNormalizer('placeholder', $placeholderNormalizer);
         $resolver->setNormalizer('choice_translation_domain', $choiceTranslationDomainNormalizer);
 
-        $resolver->setAllowedValues('input', array(
+        $resolver->setAllowedValues('input', [
             'datetime',
             'string',
             'timestamp',
             'array',
-        ));
-        $resolver->setAllowedValues('widget', array(
+        ]);
+        $resolver-
10000
>setAllowedValues('widget', [
             'single_text',
             'text',
             'choice',
-        ));
+        ]);
 
-        $resolver->setAllowedTypes('format', array('int', 'string'));
+        $resolver->setAllowedTypes('format', ['int', 'string']);
         $resolver->setAllowedTypes('years', 'array');
         $resolver->setAllowedTypes('months', 'array');
         $resolver->setAllowedTypes('days', 'array');
@@ -315,7 +315,7 @@ private function formatTimestamps(\IntlDateFormatter $formatter, $regex, array $
     {
         $pattern = $formatter->getPattern();
         $timezone = $formatter->getTimeZoneId();
-        $formattedTimestamps = array();
+        $formattedTimestamps = [];
 
         $formatter->setTimeZone('UTC');
 
@@ -338,7 +338,7 @@ private function formatTimestamps(\IntlDateFormatter $formatter, $regex, array $
 
     private function listYears(array $years)
     {
-        $result = array();
+        $result = [];
 
         foreach ($years as $year) {
             if (false !== $y = gmmktime(0, 0, 0, 6, 15, $year)) {
@@ -351,7 +351,7 @@ private function listYears(array $years)
 
     private function listMonths(array $months)
     {
-        $result = array();
+        $result = [];
 
         foreach ($months as $month) {
             $result[gmmktime(0, 0, 0, $month, 15)] = $month;
@@ -362,7 +362,7 @@ private function listMonths(array $months)
 
     private function listDays(array $days)
     {
-        $result = array();
+        $result = [];
 
         foreach ($days as $day) {
             $result[gmmktime(0, 0, 0, 5, $day)] = $day;
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/FileType.php b/src/Symfony/Component/Form/Extension/Core/Type/FileType.php
index 56fcfe17e9bf..59c72889d668 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/FileType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/FileType.php
@@ -33,11 +33,11 @@ public function buildForm(FormBuilderInterface $builder, array $options)
             $requestHandler = $form->getConfig()->getRequestHandler();
 
             if ($options['multiple']) {
-                $data = array();
+                $data = [];
                 $files = $event->getData();
 
                 if (!\is_array($files)) {
-                    $files = array();
+                    $files = [];
                 }
 
                 foreach ($files as $file) {
@@ -48,7 +48,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
 
                 // Since the array is never considered empty in the view data format
                 // on submission, we need to evaluate the configured empty data here
-                if (array() === $data) {
+                if ([] === $data) {
                     $emptyData = $form->getConfig()->getEmptyData();
                     $data = $emptyData instanceof \Closure ? $emptyData($form, $data) : $emptyData;
                 }
@@ -70,10 +70,10 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             $view->vars['attr']['multiple'] = 'multiple';
         }
 
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'type' => 'file',
             'value' => '',
-        ));
+        ]);
     }
 
     /**
@@ -97,16 +97,16 @@ public function configureOptions(OptionsResolver $resolver)
         }
 
         $emptyData = function (Options $options) {
-            return $options['multiple'] ? array() : null;
+            return $options['multiple'] ? [] : null;
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'compound' => false,
             'data_class' => $dataClass,
             'empty_data' => $emptyData,
             'multiple' => false,
             'allow_file_upload' => true,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/FormType.php b/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
index 89b9dd8ff533..35429b2cb728 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
@@ -81,7 +81,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
         }
 
         $formConfig = $form->getConfig();
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'errors' => $form->getErrors(),
             'valid' => $form->isSubmitted() ? $form->isValid() : true,
             'value' => $form->getViewData(),
@@ -93,7 +93,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             'method' => $formConfig->getMethod(),
             'action' => $formConfig->getAction(),
             'submitted' => $form->isSubmitted(),
-        ));
+        ]);
     }
 
     /**
@@ -136,7 +136,7 @@ public function configureOptions(OptionsResolver $resolver)
             }
 
             return function (FormInterface $form) {
-                return $form->getConfig()->getCompound() ? array() : '';
+                return $form->getConfig()->getCompound() ? [] : '';
             };
         };
 
@@ -155,11 +155,11 @@ public function configureOptions(OptionsResolver $resolver)
 
         // If data is given, the form is locked to that data
         // (independent of its value)
-        $resolver->setDefined(array(
+        $resolver->setDefined([
             'data',
-        ));
+        ]);
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'data_class' => $dataClass,
             'empty_data' => $emptyData,
             'trim' => true,
@@ -168,21 +168,21 @@ public function configureOptions(OptionsResolver $resolver)
             'mapped' => true,
             'by_reference' => true,
             'error_bubbling' => $errorBubbling,
-            'label_attr' => array(),
+            'label_attr' => [],
             'inherit_data' => false,
             'compound' => true,
             'method' => 'POST',
             // According to RFC 2396 (http://www.ietf.org/rfc/rfc2396.txt)
             // section 4.2., empty URIs are considered same-document references
             'action' => '',
-            'attr' => array(),
+            'attr' => [],
             'post_max_size_message' => 'The uploaded file was too large. Please try to upload a smaller file.',
             'upload_max_size_message' => $uploadMaxSizeMessage, // internal
             'allow_file_upload' => false,
-        ));
+        ]);
 
         $resolver->setAllowedTypes('label_attr', 'array');
-        $resolver->setAllowedTypes('upload_max_size_message', array('callable'));
+        $resolver->setAllowedTypes('upload_max_size_message', ['callable']);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/HiddenType.php b/src/Symfony/Component/Form/Extension/Core/Type/HiddenType.php
index 10377501fda8..dae7f2bd3d91 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/HiddenType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/HiddenType.php
@@ -21,13 +21,13 @@ class HiddenType extends AbstractType
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             // hidden fields cannot have a required attribute
             'required' => false,
             // Pass errors to the parent
             'error_bubbling' => true,
             'compound' => false,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php b/src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php
index 4051cbf23d3a..3e119ed5ce26 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php
@@ -36,16 +36,16 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             // default scale is locale specific (usually around 3)
             'scale' => null,
             'grouping' => false,
             // Integer cast rounds towards 0, so do the same when displaying fractions
             'rounding_mode' => IntegerToLocalizedStringTransformer::ROUND_DOWN,
             'compound' => false,
-        ));
+        ]);
 
-        $resolver->setAllowedValues('rounding_mode', array(
+        $resolver->setAllowedValues('rounding_mode', [
             IntegerToLocalizedStringTransformer::ROUND_FLOOR,
             IntegerToLocalizedStringTransformer::ROUND_DOWN,
             IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN,
@@ -53,9 +53,9 @@ public function configureOptions(OptionsResolver $resolver)
             IntegerToLocalizedStringTransformer::ROUND_HALF_UP,
             IntegerToLocalizedStringTransformer::ROUND_UP,
             IntegerToLocalizedStringTransformer::ROUND_CEILING,
-        ));
+        ]);
 
-        $resolver->setAllowedTypes('scale', array('null', 'int'));
+        $resolver->setAllowedTypes('scale', ['null', 'int']);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php b/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
index 1e82b9850569..e23bc954794d 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
@@ -36,7 +36,7 @@ class LanguageType extends AbstractType implements ChoiceLoaderInterface
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
                     @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
@@ -47,7 +47,7 @@ public function configureOptions(OptionsResolver $resolver)
                 return $this;
             },
             'choice_translation_domain' => false,
-        ));
+        ]);
     }
 
     /**
@@ -86,7 +86,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -100,7 +100,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php b/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
index 3499ca06af13..21225b032d80 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
@@ -36,7 +36,7 @@ class LocaleType extends AbstractType implements ChoiceLoaderInterface
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
                     @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
@@ -47,7 +47,7 @@ public function configureOptions(OptionsResolver $resolver)
                 return $this;
             },
             'choice_translation_domain' => false,
-        ));
+        ]);
     }
 
     /**
@@ -86,7 +86,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -100,7 +100,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/MoneyType.php b/src/Symfony/Component/Form/Extension/Core/Type/MoneyType.php
index 4ca60105ce15..45d0b219c827 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/MoneyType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/MoneyType.php
@@ -20,7 +20,7 @@
 
 class MoneyType extends AbstractType
 {
-    protected static $patterns = array();
+    protected static $patterns = [];
 
     /**
      * {@inheritdoc}
@@ -50,13 +50,13 @@ public function buildView(FormView $view, FormInterface $form, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'scale' => 2,
             'grouping' => false,
             'divisor' => 1,
             'currency' => 'EUR',
             'compound' => false,
-        ));
+        ]);
 
         $resolver->setAllowedTypes('scale', 'int');
     }
@@ -84,7 +84,7 @@ protected static function getPattern($currency)
         $locale = \Locale::getDefault();
 
         if (!isset(self::$patterns[$locale])) {
-            self::$patterns[$locale] = array();
+            self::$patterns[$locale] = [];
         }
 
         if (!isset(self::$patterns[$locale][$currency])) {
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/NumberType.php b/src/Symfony/Component/Form/Extension/Core/Type/NumberType.php
index 4ef1cac13ddd..1054b5899bd1 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/NumberType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/NumberType.php
@@ -35,15 +35,15 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             // default scale is locale specific (usually around 3)
             'scale' => null,
             'grouping' => false,
             'rounding_mode' => NumberToLocalizedStringTransformer::ROUND_HALF_UP,
             'compound' => false,
-        ));
+        ]);
 
-        $resolver->setAllowedValues('rounding_mode', array(
+        $resolver->setAllowedValues('rounding_mode', [
             NumberToLocalizedStringTransformer::ROUND_FLOOR,
             NumberToLocalizedStringTransformer::ROUND_DOWN,
             NumberToLocalizedStringTransformer::ROUND_HALF_DOWN,
@@ -51,9 +51,9 @@ public function configureOptions(OptionsResolver $resolver)
             NumberToLocalizedStringTransformer::ROUND_HALF_UP,
             NumberToLocalizedStringTransformer::ROUND_UP,
             NumberToLocalizedStringTransformer::ROUND_CEILING,
-        ));
+        ]);
 
-        $resolver->setAllowedTypes('scale', array('null', 'int'));
+        $resolver->setAllowedTypes('scale', ['null', 'int']);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/PasswordType.php b/src/Symfony/Component/Form/Extension/Core/Type/PasswordType.php
index e651ee8df578..5a5b2605a422 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/PasswordType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/PasswordType.php
@@ -33,10 +33,10 @@ public function buildView(FormView $view, FormInterface $form, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'always_empty' => true,
             'trim' => false,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/PercentType.php b/src/Symfony/Component/Form/Extension/Core/Type/PercentType.php
index ff4d7168f910..dedb9e8cdd1c 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/PercentType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/PercentType.php
@@ -31,16 +31,16 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'scale' => 0,
             'type' => 'fractional',
             'compound' => false,
-        ));
+        ]);
 
-        $resolver->setAllowedValues('type', array(
+        $resolver->setAllowedValues('type', [
             'fractional',
             'integer',
-        ));
+        ]);
 
         $resolver->setAllowedTypes('scale', 'int');
     }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/RepeatedType.php b/src/Symfony/Component/Form/Extension/Core/Type/RepeatedType.php
index 1189190f0980..5f9ee5329cc0 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/RepeatedType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/RepeatedType.php
@@ -32,10 +32,10 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         }
 
         $builder
-            ->addViewTransformer(new ValueToDuplicatesTransformer(array(
+            ->addViewTransformer(new ValueToDuplicatesTransformer([
                 $options['first_name'],
                 $options['second_name'],
-            )))
+            ]))
             ->add($options['first_name'], $options['type'], array_merge($options['options'], $options['first_options']))
             ->add($options['second_name'], $options['type'], array_merge($options['options'], $options['second_options']))
         ;
@@ -46,15 +46,15 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'type' => __NAMESPACE__.'\TextType',
-            'options' => array(),
-            'first_options' => array(),
-            'second_options' => array(),
+            'options' => [],
+            'first_options' => [],
+            'second_options' => [],
             'first_name' => 'first',
             'second_name' => 'second',
             'error_bubbling' => false,
-        ));
+        ]);
 
         $resolver->setAllowedTypes('options', 'array');
         $resolver->setAllowedTypes('first_options', 'array');
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/TextType.php b/src/Symfony/Component/Form/Extension/Core/Type/TextType.php
index 0944c38b61a2..9b3c59db85bb 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/TextType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/TextType.php
@@ -35,9 +35,9 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'compound' => false,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/TimeType.php b/src/Symfony/Component/Form/Extension/Core/Type/TimeType.php
index cff079d2b7fc..c88bea812bda 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/TimeType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/TimeType.php
@@ -27,17 +27,17 @@
 
 class TimeType extends AbstractType
 {
-    private static $widgets = array(
+    private static $widgets = [
         'text' => 'Symfony\Component\Form\Extension\Core\Type\TextType',
         'choice' => 'Symfony\Component\Form\Extension\Core\Type\ChoiceType',
-    );
+    ];
 
     /**
      * {@inheritdoc}
      */
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
-        $parts = array('hour');
+        $parts = ['hour'];
         $format = 'H';
 
         if ($options['with_seconds'] && !$options['with_minutes']) {
@@ -68,13 +68,13 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 });
             }
         } else {
-            $hourOptions = $minuteOptions = $secondOptions = array(
+            $hourOptions = $minuteOptions = $secondOptions = [
                 'error_bubbling' => true,
                 'empty_data' => '',
-            );
+            ];
             // when the form is compound the entries of the array are ignored in favor of children data
             // so we need to handle the cascade setting here
-            $emptyData = $builder->getEmptyData() ?: array();
+            $emptyData = $builder->getEmptyData() ?: [];
 
             if (isset($emptyData['hour'])) {
                 $hourOptions['empty_data'] = $emptyData['hour'];
@@ -93,7 +93,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
             }
 
             if ('choice' === $options['widget']) {
-                $hours = $minutes = array();
+                $hours = $minutes = [];
 
                 foreach ($options['hours'] as $hour) {
                     $hours[str_pad($hour, 2, '0', STR_PAD_LEFT)] = $hour;
@@ -115,7 +115,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 }
 
                 if ($options['with_seconds']) {
-                    $seconds = array();
+                    $seconds = [];
 
                     foreach ($options['seconds'] as $second) {
                         $seconds[str_pad($second, 2, '0', STR_PAD_LEFT)] = $second;
@@ -127,7 +127,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 }
 
                 // Append generic carry-along options
-                foreach (array('required', 'translation_domain') as $passOpt) {
+                foreach (['required', 'translation_domain'] as $passOpt) {
                     $hourOptions[$passOpt] = $options[$passOpt];
 
                     if ($options['with_minutes']) {
@@ -179,11 +179,11 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function buildView(FormView $view, FormInterface $form, array $options)
     {
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'widget' => $options['widget'],
             'with_minutes' => $options['with_minutes'],
             'with_seconds' => $options['with_seconds'],
-        ));
+        ]);
 
         // Change the input to a HTML5 time input if
         //  * the widget is set to "single_text"
@@ -219,16 +219,16 @@ public function configureOptions(OptionsResolver $resolver)
                 $default = $placeholderDefault($options);
 
                 return array_merge(
-                    array('hour' => $default, 'minute' => $default, 'second' => $default),
+                    ['hour' => $default, 'minute' => $default, 'second' => $default],
                     $placeholder
                 );
             }
 
-            return array(
+            return [
                 'hour' => $placeholder,
                 'minute' => $placeholder,
                 'second' => $placeholder,
-            );
+            ];
         };
 
         $choiceTranslationDomainNormalizer = function (Options $options, $choiceTranslationDomain) {
@@ -236,19 +236,19 @@ public function configureOptions(OptionsResolver $resolver)
                 $default = false;
 
                 return array_replace(
-                    array('hour' => $default, 'minute' => $default, 'second' => $default),
+                    ['hour' => $default, 'minute' => $default, 'second' => $default],
                     $choiceTranslationDomain
                 );
             }
 
-            return array(
+            return [
                 'hour' => $choiceTranslationDomain,
                 'minute' => $choiceTranslationDomain,
                 'second' => $choiceTranslationDomain,
-            );
+            ];
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'hours' => range(0, 23),
             'minutes' => range(0, 59),
             'seconds' => range(0, 59),
@@ -270,26 +270,26 @@ public function configureOptions(OptionsResolver $resolver)
             // this option.
             'data_class' => null,
             'empty_data' => function (Options $options) {
-                return $options['compound'] ? array() : '';
+                return $options['compound'] ? [] : '';
             },
             'compound' => $compound,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
         $resolver->setNormalizer('placeholder', $placeholderNormalizer);
         $resolver->setNormalizer('choice_translation_domain', $choiceTranslationDomainNormalizer);
 
-        $resolver->setAllowedValues('input', array(
+        $resolver->setAllowedValues('input', [
             'datetime',
             'string',
             'timestamp',
             'array',
-        ));
-        $resolver->setAllowedValues('widget', array(
+        ]);
+        $resolver->setAllowedValues('widget', [
             'single_text',
             'text',
             'choice',
-        ));
+        ]);
 
         $resolver->setAllowedTypes('hours', 'array');
         $resolver->setAllowedTypes('minutes', 'array');
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php b/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
index 6bad499350b0..dfbe2b1800b9 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
@@ -48,7 +48,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
                     @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
@@ -65,9 +65,9 @@ public function configureOptions(OptionsResolver $resolver)
             'choice_translation_domain' => false,
             'input' => 'string',
             'regions' => \DateTimeZone::ALL,
-        ));
+        ]);
 
-        $resolver->setAllowedValues('input', array('string', 'datetimezone'));
+        $resolver->setAllowedValues('input', ['string', 'datetimezone']);
 
         $resolver->setAllowedTypes('regions', 'int');
     }
@@ -116,7 +116,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, values are the same as choices
@@ -139,7 +139,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
@@ -159,7 +159,7 @@ public function loadValuesForChoices(array $choices, $value = null)
      */
     private static function getTimezones($regions)
     {
-        $timezones = array();
+        $timezones = [];
 
         foreach (\DateTimeZone::listIdentifiers($regions) as $timezone) {
             $parts = explode('/', $timezone);
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/UrlType.php b/src/Symfony/Component/Form/Extension/Core/Type/UrlType.php
index 689a2a10051a..17460688b7fd 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/UrlType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/UrlType.php
@@ -35,7 +35,7 @@ public function configureOptions(OptionsResolver $resolver)
     {
         $resolver->setDefault('default_protocol', 'http');
 
-        $resolver->setAllowedTypes('default_protocol', array('null', 'string'));
+        $resolver->setAllowedTypes('default_protocol', ['null', 'string']);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Csrf/CsrfExtension.php b/src/Symfony/Component/Form/Extension/Csrf/CsrfExtension.php
index c6959c6efeab..0fd919fe8449 100644
--- a/src/Symfony/Component/Form/Extension/Csrf/CsrfExtension.php
+++ b/src/Symfony/Component/Form/Extension/Csrf/CsrfExtension.php
@@ -43,8 +43,8 @@ public function __construct(CsrfTokenManagerInterface $tokenManager, TranslatorI
      */
     protected function loadTypeExtensions()
     {
-        return array(
+        return [
             new Type\FormTypeCsrfExtension($this->tokenManager, true, '_token', $this->translator, $this->translationDomain),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php b/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
index 0e9c6456e7c8..452bca443f5e 100644
--- a/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
+++ b/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
@@ -35,9 +35,9 @@ class CsrfValidationListener implements EventSubscriberInterface
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             FormEvents::PRE_SUBMIT => 'preSubmit',
-        );
+        ];
     }
 
     public function __construct($fieldName, CsrfTokenManagerInterface $tokenManager, $tokenId, $errorMessage, TranslatorInterface $translator = null, $translationDomain = null, ServerParams $serverParams = null)
@@ -63,7 +63,7 @@ public function preSubmit(FormEvent $event)
                 $errorMessage = $this->errorMessage;
 
                 if (null !== $this->translator) {
-                    $errorMessage = $this->translator->trans($errorMessage, array(), $this->translationDomain);
+                    $errorMessage = $this->translator->trans($errorMessage, [], $this->translationDomain);
                 }
 
                 $form->addError(new FormError($errorMessage));
diff --git a/src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php b/src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php
index bcfc3cdf721d..927c7157e5ff 100644
--- a/src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php
+++ b/src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php
@@ -90,9 +90,9 @@ public function finishView(FormView $view, FormInterface $form, array $options)
             $tokenId = $options['csrf_token_id'] ?: ($form->getName() ?: \get_class($form->getConfig()->getType()->getInnerType()));
             $data = (string) $options['csrf_token_manager']->getToken($tokenId);
 
-            $csrfForm = $factory->createNamed($options['csrf_field_name'], 'Symfony\Component\Form\Extension\Core\Type\HiddenType', $data, array(
+            $csrfForm = $factory->createNamed($options['csrf_field_name'], 'Symfony\Component\Form\Extension\Core\Type\HiddenType', $data, [
                 'mapped' => false,
-            ));
+            ]);
 
             $view->children[$options['csrf_field_name']] = $csrfForm->createView($view);
         }
@@ -103,13 +103,13 @@ public function finishView(FormView $view, FormInterface $form, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'csrf_protection' => $this->defaultEnabled,
             'csrf_field_name' => $this->defaultFieldName,
             'csrf_message' => 'The CSRF token is invalid. Please try to resubmit the form.',
             'csrf_token_manager' => $this->defaultTokenManager,
             'csrf_token_id' => null,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/DataCollector/DataCollectorExtension.php b/src/Symfony/Component/Form/Extension/DataCollector/DataCollectorExtension.php
index 5b60cfbbcd78..4b23513b7cf7 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/DataCollectorExtension.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/DataCollectorExtension.php
@@ -33,8 +33,8 @@ public function __construct(FormDataCollectorInterface $dataCollector)
      */
     protected function loadTypeExtensions()
     {
-        return array(
+        return [
             new Type\DataCollectorTypeExtension($this->dataCollector),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/DataCollector/EventListener/DataCollectorListener.php b/src/Symfony/Component/Form/Extension/DataCollector/EventListener/DataCollectorListener.php
index 1ae6e9f3ec3d..77595ab38ace 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/EventListener/DataCollectorListener.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/EventListener/DataCollectorListener.php
@@ -36,12 +36,12 @@ public function __construct(FormDataCollectorInterface $dataCollector)
      */
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             // High priority in order to be called as soon as possible
-            FormEvents::POST_SET_DATA => array('postSetData', 255),
+            FormEvents::POST_SET_DATA => ['postSetData', 255],
             // Low priority in order to be called as late as possible
-            FormEvents::POST_SUBMIT => array('postSubmit', -255),
-        );
+            FormEvents::POST_SUBMIT => ['postSubmit', -255],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php b/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
index d76944cce901..88fa453a6258 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
@@ -84,11 +84,11 @@ public function collect(Request $request, Response $response, \Exception $except
 
     public function reset()
     {
-        $this->data = array(
-            'forms' => array(),
-            'forms_by_hash' => array(),
+        $this->data = [
+            'forms' => [],
+            'forms_by_hash' => [],
             'nb_errors' => 0,
-        );
+        ];
     }
 
     /**
@@ -107,7 +107,7 @@ public function collectConfiguration(FormInterface $form)
         $hash = spl_object_hash($form);
 
         if (!isset($this->dataByForm[$hash])) {
-            $this->dataByForm[$hash] = array();
+            $this->dataByForm[$hash] = [];
         }
 
         $this->dataByForm[$hash] = array_replace(
@@ -128,7 +128,7 @@ public function collectDefaultData(FormInterface $form)
         $hash = spl_object_hash($form);
 
         if (!isset($this->dataByForm[$hash])) {
-            $this->dataByForm[$hash] = array();
+            $this->dataByForm[$hash] = [];
         }
 
         $this->dataByForm[$hash] = array_replace(
@@ -183,7 +183,7 @@ public function collectViewVariables(FormView $view)
         $hash = spl_object_hash($view);
 
         if (!isset($this->dataByView[$hash])) {
-            $this->dataByView[$hash] = array();
+            $this->dataByView[$hash] = [];
         }
 
         $this->dataByView[$hash] = array_replace(
@@ -246,9 +246,9 @@ public function serialize()
      */
     protected function getCasters()
     {
-        return parent::getCasters() + array(
+        return parent::getCasters() + [
             \Exception::class => function (\Exception $e, array $a, Stub $s) {
-                foreach (array("\0Exception\0previous", "\0Exception\0trace") as $k) {
+                foreach (["\0Exception\0previous", "\0Exception\0trace"] as $k) {
                     if (isset($a[$k])) {
                         unset($a[$k]);
                         ++$s->cut;
@@ -258,20 +258,20 @@ protected function getCasters()
                 return $a;
             },
             FormInterface::class => function (FormInterface $f, array $a) {
-                return array(
+                return [
                     Caster::PREFIX_VIRTUAL.'name' => $f->getName(),
                     Caster::PREFIX_VIRTUAL.'type_class' => new ClassStub(\get_class($f->getConfig()->getType()->getInnerType())),
-                );
+                ];
             },
-            FormView::class => array(StubCaster::class, 'cutInternals'),
+            FormView::class => [StubCaster::class, 'cutInternals'],
             ConstraintViolationInterface::class => function (ConstraintViolationInterface $v, array $a) {
-                return array(
+                return [
                     Caster::PREFIX_VIRTUAL.'root' => $v->getRoot(),
                     Caster::PREFIX_VIRTUAL.'path' => $v->getPropertyPath(),
                     Caster::PREFIX_VIRTUAL.'value' => $v->getInvalidValue(),
-                );
+                ];
             },
-        );
+        ];
     }
 
     private function &recursiveBuildPreliminaryFormTree(FormInterface $form, array &$outputByHash)
@@ -281,9 +281,9 @@ private function &recursiveBuildPreliminaryFormTree(FormInterface $form, array &
         $output = &$outputByHash[$hash];
         $output = isset($this->dataByForm[$hash])
             ? $this->dataByForm[$hash]
-            : array();
+            : [];
 
-        $output['children'] = array();
+        $output['children'] = [];
 
         foreach ($form as $name => $child) {
             $output['children'][$name] = &$this->recursiveBuildPreliminaryFormTree($child, $outputByHash);
@@ -311,18 +311,18 @@ private function &recursiveBuildFinalFormTree(FormInterface $form = null, FormVi
 
         $output = isset($this->dataByView[$viewHash])
             ? $this->dataByView[$viewHash]
-            : array();
+            : [];
 
         if (null !== $formHash) {
             $output = array_replace(
                 $output,
                 isset($this->dataByForm[$formHash])
                     ? $this->dataByForm[$formHash]
-                    : array()
+                    : []
             );
         }
 
-        $output['children'] = array();
+        $output['children'] = [];
 
         foreach ($view->children as $name => $childView) {
             // The CSRF token, for example, is never added to the form tree.
diff --git a/src/Symfony/Component/Form/Extension/DataCollector/FormDataExtractor.php b/src/Symfony/Component/Form/Extension/DataCollector/FormDataExtractor.php
index c7f65f442b95..75691c26b4f4 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/FormDataExtractor.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/FormDataExtractor.php
@@ -38,16 +38,16 @@ public function __construct(ValueExporter $valueExporter = null, $triggerDepreca
      */
     public function extractConfiguration(FormInterface $form)
     {
-        $data = array(
+        $data = [
             'id' => $this->buildId($form),
             'name' => $form->getName(),
             'type_class' => \get_class($form->getConfig()->getType()->getInnerType()),
             'synchronized' => $form->isSynchronized(),
-            'passed_options' => array(),
-            'resolved_options' => array(),
-        );
+            'passed_options' => [],
+            'resolved_options' => [],
+        ];
 
-        foreach ($form->getConfig()->getAttribute('data_collector/passed_options', array()) as $option => $value) {
+        foreach ($form->getConfig()->getAttribute('data_collector/passed_options', []) as $option => $value) {
             $data['passed_options'][$option] = $value;
         }
 
@@ -66,12 +66,12 @@ public function extractConfiguration(FormInterface $form)
      */
     public function extractDefaultData(FormInterface $form)
     {
-        $data = array(
-            'default_data' => array(
+        $data = [
+            'default_data' => [
                 'norm' => $form->getNormData(),
-            ),
-            'submitted_data' => array(),
-        );
+            ],
+            'submitted_data' => [],
+        ];
 
         if ($form->getData() !== $form->getNormData()) {
             $data['default_data']['model'] = $form->getData();
@@ -89,12 +89,12 @@ public function extractDefaultData(FormInterface $form)
      */
     public function extractSubmittedData(FormInterface $form)
     {
-        $data = array(
-            'submitted_data' => array(
+        $data = [
+            'submitted_data' => [
                 'norm' => $form->getNormData(),
-            ),
-            'errors' => array(),
-        );
+            ],
+            'errors' => [],
+        ];
 
         if ($form->getViewData() !== $form->getNormData()) {
             $data['submitted_data']['view'] = $form->getViewData();
@@ -105,13 +105,13 @@ public function extractSubmittedData(FormInterface $form)
         }
 
         foreach ($form->getErrors() as $error) {
-            $errorData = array(
+            $errorData = [
                 'message' => $error->getMessage(),
                 'origin' => \is_object($error->getOrigin())
                     ? spl_object_hash($error->getOrigin())
                     : null,
-                'trace' => array(),
-            );
+                'trace' => [],
+            ];
 
             $cause = $error->getCause();
 
@@ -148,11 +148,11 @@ public function extractSubmittedData(FormInterface $form)
      */
     public function extractViewVariables(FormView $view)
     {
-        $data = array(
+        $data = [
             'id' => isset($view->vars['id']) ? $view->vars['id'] : null,
             'name' => isset($view->vars['name']) ? $view->vars['name'] : null,
-            'view_vars' => array(),
-        );
+            'view_vars' => [],
+        ];
 
         foreach ($view->vars as $varName => $value) {
             $data['view_vars'][$varName] = $value;
diff --git a/src/Symfony/Component/Form/Extension/DataCollector/Proxy/ResolvedTypeDataCollectorProxy.php b/src/Symfony/Component/Form/Extension/DataCollector/Proxy/ResolvedTypeDataCollectorProxy.php
index c403be374b2d..53a76c8490d7 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/Proxy/ResolvedTypeDataCollectorProxy.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/Proxy/ResolvedTypeDataCollectorProxy.php
@@ -69,7 +69,7 @@ public function getTypeExtensions()
     /**
      * {@inheritdoc}
      */
-    public function createBuilder(FormFactoryInterface $factory, $name, array $options = array())
+    public function createBuilder(FormFactoryInterface $factory, $name, array $options = [])
     {
         $builder = $this->proxiedType->createBuilder($factory, $name, $options);
 
diff --git a/src/Symfony/Component/Form/Extension/DependencyInjection/DependencyInjectionExtension.php b/src/Symfony/Component/Form/Extension/DependencyInjection/DependencyInjectionExtension.php
index 4d89bdb66ccf..6479c85939d9 100644
--- a/src/Symfony/Component/Form/Extension/DependencyInjection/DependencyInjectionExtension.php
+++ b/src/Symfony/Component/Form/Extension/DependencyInjection/DependencyInjectionExtension.php
@@ -76,7 +76,7 @@ public function hasType($name)
 
     public function getTypeExtensions($name)
     {
-        $extensions = array();
+        $extensions = [];
 
         if (isset($this->typeExtensionServices[$name])) {
             foreach ($this->typeExtensionServices[$name] as $serviceId => $extension) {
@@ -105,7 +105,7 @@ public function getTypeGuesser()
     {
         if (!$this->guesserLoaded) {
             $this->guesserLoaded = true;
-            $guessers = array();
+            $guessers = [];
 
             foreach ($this->guesserServices as $serviceId => $service) {
                 if (null !== $this->guesserServiceIds) {
diff --git a/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationExtension.php b/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationExtension.php
index 08bd89c9e447..27305ada41e9 100644
--- a/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationExtension.php
+++ b/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationExtension.php
@@ -22,8 +22,8 @@ class HttpFoundationExtension extends AbstractExtension
 {
     protected function loadTypeExtensions()
     {
-        return array(
+        return [
             new Type\FormTypeHttpFoundationExtension(),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php b/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
index 0a1297d3ab21..75ee65443f45 100644
--- a/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
+++ b/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
@@ -75,7 +75,7 @@ public function handleRequest(FormInterface $form, $request = null)
                 $form->addError(new FormError(
                     \call_user_func($form->getConfig()->getOption('upload_max_size_message')),
                     null,
-                    array('{{ max }}' => $this->serverParams->getNormalizedIniPostMaxSize())
+                    ['{{ max }}' => $this->serverParams->getNormalizedIniPostMaxSize()]
                 ));
 
                 return;
@@ -85,7 +85,7 @@ public function handleRequest(FormInterface $form, $request = null)
                 $params = $request->request->all();
                 $files = $request->files->all();
             } elseif ($request->request->has($name) || $request->files->has($name)) {
-                $default = $form->getConfig()->getCompound() ? array() : null;
+                $default = $form->getConfig()->getCompound() ? [] : null;
                 $params = $request->request->get($name, $default);
                 $files = $request->files->get($name, $default);
             } else {
diff --git a/src/Symfony/Component/Form/Extension/Templating/TemplatingExtension.php b/src/Symfony/Component/Form/Extension/Templating/TemplatingExtension.php
index 903f7c75b48e..84dcb1eda9f2 100644
--- a/src/Symfony/Component/Form/Extension/Templating/TemplatingExtension.php
+++ b/src/Symfony/Component/Form/Extension/Templating/TemplatingExtension.php
@@ -24,10 +24,10 @@
  */
 class TemplatingExtension extends AbstractExtension
 {
-    public function __construct(PhpEngine $engine, CsrfTokenManagerInterface $csrfTokenManager = null, array $defaultThemes = array())
+    public function __construct(PhpEngine $engine, CsrfTokenManagerInterface $csrfTokenManager = null, array $defaultThemes = [])
     {
-        $engine->addHelpers(array(
+        $engine->addHelpers([
             new FormHelper(new FormRenderer(new TemplatingRendererEngine($engine, $defaultThemes), $csrfTokenManager)),
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Templating/TemplatingRendererEngine.php b/src/Symfony/Component/Form/Extension/Templating/TemplatingRendererEngine.php
index b26c9ef1ddb3..4805a66bba83 100644
--- a/src/Symfony/Component/Form/Extension/Templating/TemplatingRendererEngine.php
+++ b/src/Symfony/Component/Form/Extension/Templating/TemplatingRendererEngine.php
@@ -22,7 +22,7 @@ class TemplatingRendererEngine extends AbstractRendererEngine
 {
     private $engine;
 
-    public function __construct(EngineInterface $engine, array $defaultThemes = array())
+    public function __construct(EngineInterface $engine, array $defaultThemes = [])
     {
         parent::__construct($defaultThemes);
 
@@ -32,7 +32,7 @@ public function __construct(EngineInterface $engine, array $defaultThemes = arra
     /**
      * {@inheritdoc}
      */
-    public function renderBlock(FormView $view, $resource, $blockName, array $variables = array())
+    public function renderBlock(FormView $view, $resource, $blockName, array $variables = [])
     {
         return trim($this->engine->render($resource, $variables));
     }
diff --git a/src/Symfony/Component/Form/Extension/Validator/Constraints/Form.php b/src/Symfony/Component/Form/Extension/Validator/Constraints/Form.php
index 9abb14189dc0..7d2d75152594 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Constraints/Form.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Constraints/Form.php
@@ -21,10 +21,10 @@ class Form extends Constraint
     const NOT_SYNCHRONIZED_ERROR = '1dafa156-89e1-4736-b832-419c2e501fca';
     const NO_SUCH_FIELD_ERROR = '6e5212ed-a197-4339-99aa-5654798a4854';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_SYNCHRONIZED_ERROR => 'NOT_SYNCHRONIZED_ERROR',
         self::NO_SUCH_FIELD_ERROR => 'NO_SUCH_FIELD_ERROR',
-    );
+    ];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php b/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php
index 02f8237a4608..08d679a4b5d4 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php
@@ -55,7 +55,7 @@ public function validate($form, Constraint $constraint)
 
             // Validate the data against the constraints defined
             // in the form
-            $constraints = $config->getOption('constraints', array());
+            $constraints = $config->getOption('constraints', []);
 
             if ($groups instanceof GroupSequence) {
                 $validator->atPath('data')->validate($form->getData(), $constraints, $groups);
@@ -115,7 +115,7 @@ public function validate($form, Constraint $constraint)
 
                 $this->context->setConstraint($constraint);
                 $this->context->buildViolation($config->getOption('invalid_message'))
-                    ->setParameters(array_replace(array('{{ value }}' => $clientDataAsString), $config->getOption('invalid_message_parameters')))
+                    ->setParameters(array_replace(['{{ value }}' => $clientDataAsString], $config->getOption('invalid_message_parameters')))
                     ->setInvalidValue($form->getViewData())
                     ->setCode(Form::NOT_SYNCHRONIZED_ERROR)
                     ->setCause($form->getTransformationFailure())
@@ -166,7 +166,7 @@ private static function getValidationGroups(FormInterface $form)
             $form = $form->getParent();
         } while (null !== $form);
 
-        return array(Constraint::DEFAULT_GROUP);
+        return [Constraint::DEFAULT_GROUP];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php b/src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php
index cbcc3e3e55d0..80c94dc66e4d 100644
--- a/src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php
+++ b/src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php
@@ -32,7 +32,7 @@ class ValidationListener implements EventSubscriberInterface
      */
     public static function getSubscribedEvents()
     {
-        return array(FormEvents::POST_SUBMIT => 'validateForm');
+        return [FormEvents::POST_SUBMIT => 'validateForm'];
     }
 
     public function __construct(ValidatorInterface $validator, ViolationMapperInterface $violationMapper)
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/BaseValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/BaseValidatorExtension.php
index 431bf5ecfb6c..63505ba2333d 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/BaseValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/BaseValidatorExtension.php
@@ -32,7 +32,7 @@ public function configureOptions(OptionsResolver $resolver)
         // Make sure that validation groups end up as null, closure or array
         $validationGroupsNormalizer = function (Options $options, $groups) {
             if (false === $groups) {
-                return array();
+                return [];
             }
 
             if (empty($groups)) {
@@ -50,9 +50,9 @@ public function configureOptions(OptionsResolver $resolver)
             return (array) $groups;
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'validation_groups' => null,
-        ));
+        ]);
 
         $resolver->setNormalizer('validation_groups', $validationGroupsNormalizer);
     }
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php
index b83c2030c0f0..aafd479e56a6 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php
@@ -49,17 +49,17 @@ public function configureOptions(OptionsResolver $resolver)
 
         // Constraint should always be converted to an array
         $constraintsNormalizer = function (Options $options, $constraints) {
-            return \is_object($constraints) ? array($constraints) : (array) $constraints;
+            return \is_object($constraints) ? [$constraints] : (array) $constraints;
         };
 
-        $resolver->setDefaults(array(
-            'error_mapping' => array(),
-            'constraints' => array(),
+        $resolver->setDefaults([
+            'error_mapping' => [],
+            'constraints' => [],
             'invalid_message' => 'This value is not valid.',
-            'invalid_message_parameters' => array(),
+            'invalid_message_parameters' => [],
             'allow_extra_fields' => false,
             'extra_fields_message' => 'This form should not contain extra fields.',
-        ));
+        ]);
 
         $resolver->setNormalizer('constraints', $constraintsNormalizer);
     }
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/RepeatedTypeValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/RepeatedTypeValidatorExtension.php
index ff27fbdb474f..ddffdc1b7a8e 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/RepeatedTypeValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/RepeatedTypeValidatorExtension.php
@@ -27,12 +27,12 @@ public function configureOptions(OptionsResolver $resolver)
     {
         // Map errors to the first field
         $errorMapping = function (Options $options) {
-            return array('.' => $options['first_name']);
+            return ['.' => $options['first_name']];
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'error_mapping' => $errorMapping,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
index 04e60f6cd3b0..c7ab9326f833 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
@@ -44,7 +44,7 @@ public function configureOptions(OptionsResolver $resolver)
         $translationDomain = $this->translationDomain;
         $resolver->setNormalizer('upload_max_size_message', function (Options $options, $message) use ($translator, $translationDomain) {
             return function () use ($translator, $translationDomain, $message) {
-                return $translator->trans(\call_user_func($message), array(), $translationDomain);
+                return $translator->trans(\call_user_func($message), [], $translationDomain);
             };
         });
     }
diff --git a/src/Symfony/Component/Form/Extension/Validator/ValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/ValidatorExtension.php
index 8e90a54da46c..a5e38859c088 100644
--- a/src/Symfony/Component/Form/Extension/Validator/ValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/ValidatorExtension.php
@@ -49,10 +49,10 @@ public function loadTypeGuesser()
 
     protected function loadTypeExtensions()
     {
-        return array(
+        return [
             new Type\FormTypeValidatorExtension($this->validator),
             new Type\RepeatedTypeValidatorExtension(),
             new Type\SubmitTypeValidatorExtension(),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Validator/ValidatorTypeGuesser.php b/src/Symfony/Component/Form/Extension/Validator/ValidatorTypeGuesser.php
index d784c13e6949..22cc7726d4a7 100644
--- a/src/Symfony/Component/Form/Extension/Validator/ValidatorTypeGuesser.php
+++ b/src/Symfony/Component/Form/Extension/Validator/ValidatorTypeGuesser.php
@@ -81,77 +81,77 @@ public function guessTypeForConstraint(Constraint $constraint)
             case 'Symfony\Component\Validator\Constraints\Type':
                 switch ($constraint->type) {
                     case 'array':
-                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', array(), Guess::MEDIUM_CONFIDENCE);
+                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', [], Guess::MEDIUM_CONFIDENCE);
                     case 'boolean':
                     case 'bool':
-                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', array(), Guess::MEDIUM_CONFIDENCE);
+                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', [], Guess::MEDIUM_CONFIDENCE);
 
                     case 'double':
                     case 'float':
                     case 'numeric':
                     case 'real':
-                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', array(), Guess::MEDIUM_CONFIDENCE);
+                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', [], Guess::MEDIUM_CONFIDENCE);
 
                     case 'integer':
                     case 'int':
                     case 'long':
-                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', array(), Guess::MEDIUM_CONFIDENCE);
+                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', [], Guess::MEDIUM_CONFIDENCE);
 
                     case '\DateTime':
-                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', array(), Guess::MEDIUM_CONFIDENCE);
+                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', [], Guess::MEDIUM_CONFIDENCE);
 
                     case 'string':
-                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::LOW_CONFIDENCE);
+                        return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
                 }
                 break;
 
             case 'Symfony\Component\Validator\Constraints\Country':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CountryType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CountryType', [], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Currency':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CurrencyType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CurrencyType', [], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Date':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', array('input' => 'string'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', ['input' => 'string'], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\DateTime':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', array('input' => 'string'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', ['input' => 'string'], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Email':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\EmailType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\EmailType', [], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\File':
             case 'Symfony\Component\Validator\Constraints\Image':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\FileType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\FileType', [], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Language':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\LanguageType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\LanguageType', [], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Locale':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\LocaleType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\LocaleType', [], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Time':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', array('input' => 'string'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', ['input' => 'string'], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Url':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\UrlType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\UrlType', [], Guess::HIGH_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Ip':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::MEDIUM_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Length':
             case 'Symfony\Component\Validator\Constraints\Regex':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::LOW_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Range':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', array(), Guess::LOW_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', [], Guess::LOW_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\Count':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', array(), Guess::LOW_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', [], Guess::LOW_CONFIDENCE);
 
             case 'Symfony\Component\Validator\Constraints\IsTrue':
             case 'Symfony\Component\Validator\Constraints\IsFalse':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', [], Guess::MEDIUM_CONFIDENCE);
         }
     }
 
@@ -185,7 +185,7 @@ public function guessMaxLengthForConstraint(Constraint $constraint)
                 break;
 
             case 'Symfony\Component\Validator\Constraints\Type':
-                if (\in_
10000
array($constraint->type, array('double', 'float', 'numeric', 'real'))) {
+                if (\in_array($constraint->type, ['double', 'float', 'numeric', 'real'])) {
                     return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
                 }
                 break;
@@ -227,7 +227,7 @@ public function guessPatternForConstraint(Constraint $constraint)
                 break;
 
             case 'Symfony\Component\Validator\Constraints\Type':
-                if (\in_array($constraint->type, array('double', 'float', 'numeric', 'real'))) {
+                if (\in_array($constraint->type, ['double', 'float', 'numeric', 'real'])) {
                     return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
                 }
                 break;
@@ -249,7 +249,7 @@ public function guessPatternForConstraint(Constraint $constraint)
      */
     protected function guess($class, $property, \Closure $closure, $defaultValue = null)
     {
-        $guesses = array();
+        $guesses = [];
         $classMetadata = $this->metadataFactory->getMetadataFor($class);
 
         if ($classMetadata instanceof ClassMetadataInterface && $classMetadata->hasPropertyMetadata($property)) {
diff --git a/src/Symfony/Component/Form/Extension/Validator/ViolationMapper/ViolationMapper.php b/src/Symfony/Component/Form/Extension/Validator/ViolationMapper/ViolationMapper.php
index 9671082a651c..86a77044d13d 100644
--- a/src/Symfony/Component/Form/Extension/Validator/ViolationMapper/ViolationMapper.php
+++ b/src/Symfony/Component/Form/Extension/Validator/ViolationMapper/ViolationMapper.php
@@ -153,7 +153,7 @@ private function matchChild(FormInterface $form, PropertyPathIteratorInterface $
         $foundAtIndex = null;
 
         // Construct mapping rules for the given form
-        $rules = array();
+        $rules = [];
 
         foreach ($form->getConfig()->getOption('error_mapping') as $propertyPath => $targetPath) {
             // Dot rules are considered at the very end
diff --git a/src/Symfony/Component/Form/Extension/Validator/ViolationMapper/ViolationPath.php b/src/Symfony/Component/Form/Extension/Validator/ViolationMapper/ViolationPath.php
index 19020c7a6926..a38195af5162 100644
--- a/src/Symfony/Component/Form/Extension/Validator/ViolationMapper/ViolationPath.php
+++ b/src/Symfony/Component/Form/Extension/Validator/ViolationMapper/ViolationPath.php
@@ -23,17 +23,17 @@ class ViolationPath implements \IteratorAggregate, PropertyPathInterface
     /**
      * @var array
      */
-    private $elements = array();
+    private $elements = [];
 
     /**
      * @var array
      */
-    private $isIndex = array();
+    private $isIndex = [];
 
     /**
      * @var array
      */
-    private $mapsForm = array();
+    private $mapsForm = [];
 
     /**
      * @var string
diff --git a/src/Symfony/Component/Form/Form.php b/src/Symfony/Component/Form/Form.php
index a2d67ec2669d..1ab5d146efd6 100644
--- a/src/Symfony/Component/Form/Form.php
+++ b/src/Symfony/Component/Form/Form.php
@@ -88,7 +88,7 @@ class Form implements \IteratorAggregate, FormInterface
      *
      * @var FormError[] An array of FormError instances
      */
-    private $errors = array();
+    private $errors = [];
 
     /**
      * Whether this form was submitted.
@@ -130,7 +130,7 @@ class Form implements \IteratorAggregate, FormInterface
      *
      * @var array
      */
-    private $extraData = array();
+    private $extraData = [];
 
     /**
      * Returns the transformation failure generated during submission, if any.
@@ -507,7 +507,7 @@ public function submit($submittedData, $clearMissing = true)
 
         // Initialize errors in the very beginning so that we don't lose any
         // errors added during listeners
-        $this->errors = array();
+        $this->errors = [];
 
         // Obviously, a disabled form should not change its data upon submission.
         if ($this->isDisabled()) {
@@ -564,7 +564,7 @@ public function submit($submittedData, $clearMissing = true)
             // (think of empty collection forms)
             if ($this->config->getCompound()) {
                 if (null === $submittedData) {
-                    $submittedData = array();
+                    $submittedData = [];
                 }
 
                 if (!\is_array($submittedData)) {
@@ -814,7 +814,7 @@ public function all()
     /**
      * {@inheritdoc}
      */
-    public function add($child, $type = null, array $options = array())
+    public function add($child, $type = null, array $options = [])
     {
         if ($this->submitted) {
             throw new AlreadySubmittedException('You cannot add children to a submitted form');
@@ -877,7 +877,7 @@ public function add($child, $type = null, array $options = array())
         $child->setParent($this);
 
         if (!$this->lockSetData && $this->defaultDataSet && !$this->config->getInheritData()) {
-            $iterator = new InheritDataAwareIterator(new \ArrayIterator(array($child->getName() => $child)));
+            $iterator = new InheritDataAwareIterator(new \ArrayIterator([$child->getName() => $child]));
             $iterator = new \RecursiveIteratorIterator($iterator);
             $this->config->getDataMapper()->mapDataToForms($viewData, $iterator);
         }
diff --git a/src/Symfony/Component/Form/FormBuilder.php b/src/Symfony/Component/Form/FormBuilder.php
index a5d6ca820ac5..f36b5fa1a83d 100644
--- a/src/Symfony/Component/Form/FormBuilder.php
+++ b/src/Symfony/Component/Form/FormBuilder.php
@@ -28,14 +28,14 @@ class FormBuilder extends FormConfigBuilder implements \IteratorAggregate, FormB
      *
      * @var FormBuilderInterface[]
      */
-    private $children = array();
+    private $children = [];
 
     /**
      * The data of children who haven't been converted to form builders yet.
      *
      * @var array
      */
-    private $unresolvedChildren = array();
+    private $unresolvedChildren = [];
 
     /**
      * Creates a new form builder.
@@ -46,7 +46,7 @@ class FormBuilder extends FormConfigBuilder implements \IteratorAggregate, FormB
      * @param FormFactoryInterface     $factory
      * @param array                    $options
      */
-    public function __construct($name, $dataClass, EventDispatcherInterface $dispatcher, FormFactoryInterface $factory, array $options = array())
+    public function __construct($name, $dataClass, EventDispatcherInterface $dispatcher, FormFactoryInterface $factory, array $options = [])
     {
         parent::__construct($name, $dataClass, $dispatcher, $options);
 
@@ -56,7 +56,7 @@ public function __construct($name, $dataClass, EventDispatcherInterface $dispatc
     /**
      * {@inheritdoc}
      */
-    public function add($child, $type = null, array $options = array())
+    public function add($child, $type = null, array $options = [])
     {
         if ($this->locked) {
             throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
@@ -81,10 +81,10 @@ public function add($child, $type = null, array $options = array())
 
         // Add to "children" to maintain order
         $this->children[$child] = null;
-        $this->unresolvedChildren[$child] = array(
+        $this->unresolvedChildren[$child] = [
             'type' => $type,
             'options' => $options,
-        );
+        ];
 
         return $this;
     }
@@ -92,7 +92,7 @@ public function add($child, $type = null, array $options = array())
     /**
      * {@inheritdoc}
      */
-    public function create($name, $type = null, array $options = array())
+    public function create($name, $type = null, array $options = [])
     {
         if ($this->locked) {
             throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
@@ -197,8 +197,8 @@ public function getFormConfig()
         /** @var $config self */
         $config = parent::getFormConfig();
 
-        $config->children = array();
-        $config->unresolvedChildren = array();
+        $config->children = [];
+        $config->unresolvedChildren = [];
 
         return $config;
     }
@@ -269,6 +269,6 @@ private function resolveChildren()
             $this->children[$name] = $this->create($name, $info['type'], $info['options']);
         }
 
-        $this->unresolvedChildren = array();
+        $this->unresolvedChildren = [];
     }
 }
diff --git a/src/Symfony/Component/Form/FormBuilderInterface.php b/src/Symfony/Component/Form/FormBuilderInterface.php
index 32582336aba9..1ed695ed044d 100644
--- a/src/Symfony/Component/Form/FormBuilderInterface.php
+++ b/src/Symfony/Component/Form/FormBuilderInterface.php
@@ -29,7 +29,7 @@ interface FormBuilderInterface extends \Traversable, \Countable, FormConfigBuild
      *
      * @return self
      */
-    public function add($child, $type = null, array $options = array());
+    public function add($child, $type = null, array $options = []);
 
     /**
      * Creates a form builder.
@@ -40,7 +40,7 @@ public function add($child, $type = null, array $options = array());
      *
      * @return self
      */
-    public function create($name, $type = null, array $options = array());
+    public function create($name, $type = null, array $options = []);
 
     /**
      * Returns a child by name.
diff --git a/src/Symfony/Component/Form/FormConfigBuilder.php b/src/Symfony/Component/Form/FormConfigBuilder.php
index 7f5574203fde..28094d27c9ea 100644
--- a/src/Symfony/Component/Form/FormConfigBuilder.php
+++ b/src/Symfony/Component/Form/FormConfigBuilder.php
@@ -39,13 +39,13 @@ class FormConfigBuilder implements FormConfigBuilderInterface
      *
      * @var array
      */
-    private static $allowedMethods = array(
+    private static $allowedMethods = [
         'GET',
         'PUT',
         'POST',
         'DELETE',
         'PATCH',
-    );
+    ];
 
     /**
      * @var bool
@@ -95,12 +95,12 @@ class FormConfigBuilder implements FormConfigBuilderInterface
     /**
      * @var array
      */
-    private $viewTransformers = array();
+    private $viewTransformers = [];
 
     /**
      * @var array
      */
-    private $modelTransformers = array();
+    private $modelTransformers = [];
 
     /**
      * @var DataMapperInterface
@@ -130,7 +130,7 @@ class FormConfigBuilder implements FormConfigBuilderInterface
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @var mixed
@@ -188,7 +188,7 @@ class FormConfigBuilder implements FormConfigBuilderInterface
      * @throws InvalidArgumentException if the data class is not a valid class or if
      *                                  the name contains invalid characters
      */
-    public function __construct($name, $dataClass, EventDispatcherInterface $dispatcher, array $options = array())
+    public function __construct($name, $dataClass, EventDispatcherInterface $dispatcher, array $options = [])
     {
         self::validateName($name);
 
@@ -257,7 +257,7 @@ public function resetViewTransformers()
             throw new BadMethodCallException('FormConfigBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
         }
 
-        $this->viewTransformers = array();
+        $this->viewTransformers = [];
 
         return $this;
     }
@@ -289,7 +289,7 @@ public function resetModelTransformers()
             throw new BadMethodCallException('FormConfigBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
         }
 
-        $this->modelTransformers = array();
+        $this->modelTransformers = [];
 
         return $this;
     }
diff --git a/src/Symfony/Component/Form/FormError.php b/src/Symfony/Component/Form/FormError.php
index 7384cb2805de..ce5b682402bd 100644
--- a/src/Symfony/Component/Form/FormError.php
+++ b/src/Symfony/Component/Form/FormError.php
@@ -47,7 +47,7 @@ class FormError implements \Serializable
      *
      * @see \Symfony\Component\Translation\Translator
      */
-    public function __construct($message, $messageTemplate = null, array $messageParameters = array(), $messagePluralization = null, $cause = null)
+    public function __construct($message, $messageTemplate = null, array $messageParameters = [], $messagePluralization = null, $cause = null)
     {
         $this->message = $message;
         $this->messageTemplate = $messageTemplate ?: $message;
@@ -141,13 +141,13 @@ public function getOrigin()
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             $this->message,
             $this->messageTemplate,
             $this->messageParameters,
             $this->messagePluralization,
             $this->cause,
-        ));
+        ]);
     }
 
     /**
@@ -158,7 +158,7 @@ public function serialize()
     public function unserialize($serialized)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            list($this->message, $this->messageTemplate, $this->messageParameters, $this->messagePluralization, $this->cause) = unserialize($serialized, array('allowed_classes' => false));
+            list($this->message, $this->messageTemplate, $this->messageParameters, $this->messagePluralization, $this->cause) = unserialize($serialized, ['allowed_classes' => false]);
         } else {
             list($this->message, $this->messageTemplate, $this->messageParameters, $this->messagePluralization, $this->cause) = unserialize($serialized);
         }
diff --git a/src/Symfony/Component/Form/FormErrorIterator.php b/src/Symfony/Component/Form/FormErrorIterator.php
index a534918406bc..2cc53c0923f9 100644
--- a/src/Symfony/Component/Form/FormErrorIterator.php
+++ b/src/Symfony/Component/Form/FormErrorIterator.php
@@ -261,7 +261,7 @@ public function seek($position)
     public function findByCodes($codes)
     {
         $codes = (array) $codes;
-        $errors = array();
+        $errors = [];
         foreach ($this as $error) {
             $cause = $error->getCause();
             if ($cause instanceof ConstraintViolation && \in_array($cause->getCode(), $codes, true)) {
diff --git a/src/Symfony/Component/Form/FormFactory.php b/src/Symfony/Component/Form/FormFactory.php
index 3f18ccf3259c..d474d5903f86 100644
--- a/src/Symfony/Component/Form/FormFactory.php
+++ b/src/Symfony/Component/Form/FormFactory.php
@@ -25,7 +25,7 @@ public function __construct(FormRegistryInterface $registry)
     /**
      * {@inheritdoc}
      */
-    public function create($type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = array())
+    public function create($type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = [])
     {
         return $this->createBuilder($type, $data, $options)->getForm();
     }
@@ -33,7 +33,7 @@ public function create($type = 'Symfony\Component\Form\Extension\Core\Type\FormT
     /**
      * {@inheritdoc}
      */
-    public function createNamed($name, $type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = array())
+    public function createNamed($name, $type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = [])
     {
         return $this->createNamedBuilder($name, $type, $data, $options)->getForm();
     }
@@ -41,7 +41,7 @@ public function createNamed($name, $type = 'Symfony\Component\Form\Extension\Cor
     /**
      * {@inheritdoc}
      */
-    public function createForProperty($class, $property, $data = null, array $options = array())
+    public function createForProperty($class, $property, $data = null, array $options = [])
     {
         return $this->createBuilderForProperty($class, $property, $data, $options)->getForm();
     }
@@ -49,7 +49,7 @@ public function createForProperty($class, $property, $data = null, array $option
     /**
      * {@inheritdoc}
      */
-    public function createBuilder($type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = array())
+    public function createBuilder($type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = [])
     {
         if (!\is_string($type)) {
             throw new UnexpectedTypeException($type, 'string');
@@ -61,7 +61,7 @@ public function createBuilder($type = 'Symfony\Component\Form\Extension\Core\Typ
     /**
      * {@inheritdoc}
      */
-    public function createNamedBuilder($name, $type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = array())
+    public function createNamedBuilder($name, $type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = [])
     {
         if (null !== $data && !array_key_exists('data', $options)) {
             $options['data'] = $data;
@@ -85,7 +85,7 @@ public function createNamedBuilder($name, $type = 'Symfony\Component\Form\Extens
     /**
      * {@inheritdoc}
      */
-    public function createBuilderForProperty($class, $property, $data = null, array $options = array())
+    public function createBuilderForProperty($class, $property, $data = null, array $options = [])
     {
         if (null === $guesser = $this->registry->getTypeGuesser()) {
             return $this->createNamedBuilder($property, 'Symfony\Component\Form\Extension\Core\Type\TextType', $data, $options);
@@ -102,23 +102,23 @@ public function createBuilderForProperty($class, $property, $data = null, array
         $pattern = $patternGuess ? $patternGuess->getValue() : null;
 
         if (null !== $pattern) {
-            $options = array_replace_recursive(array('attr' => array('pattern' => $pattern)), $options);
+            $options = array_replace_recursive(['attr' => ['pattern' => $pattern]], $options);
         }
 
         if (null !== $maxLength) {
-            $options = array_replace_recursive(array('attr' => array('maxlength' => $maxLength)), $options);
+            $options = array_replace_recursive(['attr' => ['maxlength' => $maxLength]], $options);
         }
 
         if ($requiredGuess) {
-            $options = array_merge(array('required' => $requiredGuess->getValue()), $options);
+            $options = array_merge(['required' => $requiredGuess->getValue()], $options);
         }
 
         // user options may override guessed options
         if ($typeGuess) {
-            $attrs = array();
+            $attrs = [];
             $typeGuessOptions = $typeGuess->getOptions();
             if (isset($typeGuessOptions['attr']) && isset($options['attr'])) {
-                $attrs = array('attr' => array_merge($typeGuessOptions['attr'], $options['attr']));
+                $attrs = ['attr' => array_merge($typeGuessOptions['attr'], $options['attr'])];
             }
 
             $options = array_merge($typeGuessOptions, $options, $attrs);
diff --git a/src/Symfony/Component/Form/FormFactoryBuilder.php b/src/Symfony/Component/Form/FormFactoryBuilder.php
index 3afe1f535960..bccb86f40791 100644
--- a/src/Symfony/Component/Form/FormFactoryBuilder.php
+++ b/src/Symfony/Component/Form/FormFactoryBuilder.php
@@ -26,22 +26,22 @@ class FormFactoryBuilder implements FormFactoryBuilderInterface
     /**
      * @var FormExtensionInterface[]
      */
-    private $extensions = array();
+    private $extensions = [];
 
     /**
      * @var FormTypeInterface[]
      */
-    private $types = array();
+    private $types = [];
 
     /**
      * @var FormTypeExtensionInterface[]
      */
-    private $typeExtensions = array();
+    private $typeExtensions = [];
 
     /**
      * @var FormTypeGuesserInterface[]
      */
-    private $typeGuessers = array();
+    private $typeGuessers = [];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/Form/FormFactoryInterface.php b/src/Symfony/Component/Form/FormFactoryInterface.php
index 7014cda159cf..597537ad88c1 100644
--- a/src/Symfony/Component/Form/FormFactoryInterface.php
+++ b/src/Symfony/Component/Form/FormFactoryInterface.php
@@ -29,7 +29,7 @@ interface FormFactoryInterface
      *
      * @throws \Symfony\Component\OptionsResolver\Exception\InvalidOptionsException if any given option is not applicable to the given type
      */
-    public function create($type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = array());
+    public function create($type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = []);
 
     /**
      * Returns a form.
@@ -45,7 +45,7 @@ public function create($type = 'Symfony\Component\Form\Extension\Core\Type\FormT
      *
      * @throws \Symfony\Component\OptionsResolver\Exception\InvalidOptionsException if any given option is not applicable to the given type
      */
-    public function createNamed($name, $type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = array());
+    public function createNamed($name, $type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = []);
 
     /**
      * Returns a form for a property of a class.
@@ -61,7 +61,7 @@ public function createNamed($name, $type = 'Symfony\Component\Form\Extension\Cor
      *
      * @throws \Symfony\Component\OptionsResolver\Exception\InvalidOptionsException if any given option is not applicable to the form type
      */
-    public function createForProperty($class, $property, $data = null, array $options = array());
+    public function createForProperty($class, $property, $data = null, array $options = []);
 
     /**
      * Returns a form builder.
@@ -74,7 +74,7 @@ public function createForProperty($class, $property, $data = null, array $option
      *
      * @throws \Symfony\Component\OptionsResolver\Exception\InvalidOptionsException if any given option is not applicable to the given type
      */
-    public function createBuilder($type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = array());
+    public function createBuilder($type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = []);
 
     /**
      * Returns a form builder.
@@ -88,7 +88,7 @@ public function createBuilder($type = 'Symfony\Component\Form\Extension\Core\Typ
      *
      * @throws \Symfony\Component\OptionsResolver\Exception\InvalidOptionsException if any given option is not applicable to the given type
      */
-    public function createNamedBuilder($name, $type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = array());
+    public function createNamedBuilder($name, $type = 'Symfony\Component\Form\Extension\Core\Type\FormType', $data = null, array $options = []);
 
     /**
      * Returns a form builder for a property of a class.
@@ -105,5 +105,5 @@ public function createNamedBuilder($name, $type = 'Symfony\Component\Form\Extens
      *
      * @throws \Symfony\Component\OptionsResolver\Exception\InvalidOptionsException if any given option is not applicable to the form type
      */
-    public function createBuilderForProperty($class, $property, $data = null, array $options = array());
+    public function createBuilderForProperty($class, $property, $data = null, array $options = []);
 }
diff --git a/src/Symfony/Component/Form/FormInterface.php b/src/Symfony/Component/Form/FormInterface.php
index 253f28dd7a1e..2add7938443a 100644
--- a/src/Symfony/Component/Form/FormInterface.php
+++ b/src/Symfony/Component/Form/FormInterface.php
@@ -29,7 +29,7 @@ interface FormInterface extends \ArrayAccess, \Traversable, \Countable
      * @throws Exception\LogicException            when trying to set a parent for a form with
      *                                             an empty name
      */
-    public function setParent(FormInterface $parent = null);
+    public function setParent(self $parent = null);
 
     /**
      * Returns the parent form.
@@ -51,7 +51,7 @@ public function getParent();
      * @throws Exception\LogicException            when trying to add a child to a non-compound form
      * @throws Exception\UnexpectedTypeException   if $child or $type has an unexpected type
      */
-    public function add($child, $type = null, array $options = array());
+    public function add($child, $type = null, array $options = []);
 
     /**
      * Returns the child with the given name.
diff --git a/src/Symfony/Component/Form/FormRegistry.php b/src/Symfony/Component/Form/FormRegistry.php
index 67d114608032..1446976191c6 100644
--- a/src/Symfony/Component/Form/FormRegistry.php
+++ b/src/Symfony/Component/Form/FormRegistry.php
@@ -28,12 +28,12 @@ class FormRegistry implements FormRegistryInterface
      *
      * @var FormExtensionInterface[] An array of FormExtensionInterface
      */
-    private $extensions = array();
+    private $extensions = [];
 
     /**
      * @var ResolvedFormTypeInterface[]
      */
-    private $types = array();
+    private $types = [];
 
     /**
      * @var FormTypeGuesserInterface|false|null
@@ -45,7 +45,7 @@ class FormRegistry implements FormRegistryInterface
      */
     private $resolvedTypeFactory;
 
-    private $checkedTypes = array();
+    private $checkedTypes = [];
 
     /**
      * @param FormExtensionInterface[]         $extensions          An array of FormExtensionInterface
@@ -108,12 +108,12 @@ public function getType($name)
      */
     private function resolveType(FormTypeInterface $type)
     {
-        $typeExtensions = array();
+        $typeExtensions = [];
         $parentType = $type->getParent();
         $fqcn = \get_class($type);
 
         if (isset($this->checkedTypes[$fqcn])) {
-            $types = implode(' > ', array_merge(array_keys($this->checkedTypes), array($fqcn)));
+            $types = implode(' > ', array_merge(array_keys($this->checkedTypes), [$fqcn]));
             throw new LogicException(sprintf('Circular reference detected for form type "%s" (%s).', $fqcn, $types));
         }
 
@@ -161,7 +161,7 @@ public function hasType($name)
     public function getTypeGuesser()
     {
         if (false === $this->guesser) {
-            $guessers = array();
+            $guessers = [];
 
             foreach ($this->extensions as $extension) {
                 $guesser = $extension->getTypeGuesser();
diff --git a/src/Symfony/Component/Form/FormRenderer.php b/src/Symfony/Component/Form/FormRenderer.php
index 3bc7bc909b6f..6bec50652d96 100644
--- a/src/Symfony/Component/Form/FormRenderer.php
+++ b/src/Symfony/Component/Form/FormRenderer.php
@@ -27,9 +27,9 @@ class FormRenderer implements FormRendererInterface
 
     private $engine;
     private $csrfTokenManager;
-    private $blockNameHierarchyMap = array();
-    private $hierarchyLevelMap = array();
-    private $variableStack = array();
+    private $blockNameHierarchyMap = [];
+    private $hierarchyLevelMap = [];
+    private $variableStack = [];
 
     public function __construct(FormRendererEngineInterface $engine, CsrfTokenManagerInterface $csrfTokenManager = null)
     {
@@ -69,7 +69,7 @@ public function renderCsrfToken($tokenId)
     /**
      * {@inheritdoc}
      */
-    public function renderBlock(FormView $view, $blockName, array $variables = array())
+    public function renderBlock(FormView $view, $blockName, array $variables = [])
     {
         $resource = $this->engine->getResourceForBlockName($view, $blockName);
 
@@ -82,7 +82,7 @@ public function renderBlock(FormView $view, $blockName, array $variables = array
         // The variables are cached globally for a view (instead of for the
         // current suffix)
         if (!isset($this->variableStack[$viewCacheKey])) {
-            $this->variableStack[$viewCacheKey] = array();
+            $this->variableStack[$viewCacheKey] = [];
 
             // The default variable scope contains all view variables, merged with
             // the variables passed explicitly to the helper
@@ -128,7 +128,7 @@ public function renderBlock(FormView $view, $blockName, array $variables = array
     /**
      * {@inheritdoc}
      */
-    public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $variables = array())
+    public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $variables = [])
     {
         $renderOnlyOnce = 'row' === $blockNameSuffix || 'widget' === $blockNameSuffix;
 
@@ -171,7 +171,7 @@ public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $va
             // INITIAL CALL
             // Calculate the hierarchy of template blocks and start on
             // the bottom level of the hierarchy (= "_<id>_<section>" block)
-            $blockNameHierarchy = array();
+            $blockNameHierarchy = [];
             foreach ($view->vars['block_prefixes'] as $blockNamePrefix) {
                 $blockNameHierarchy[] = $blockNamePrefix.'_'.$blockNameSuffix;
             }
@@ -191,7 +191,7 @@ public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $va
         // The variables are cached globally for a view (instead of for the
         // current suffix)
         if (!isset($this->variableStack[$viewCacheKey])) {
-            $this->variableStack[$viewCacheKey] = array();
+            $this->variableStack[$viewCacheKey] = [];
 
             // The default variable scope contains all view variables, merged with
             // the variables passed explicitly to the helper
@@ -282,7 +282,7 @@ public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $va
      */
     public function humanize($text)
     {
-        return ucfirst(strtolower(trim(preg_replace(array('/([A-Z])/', '/[_\s]+/'), array('_$1', ' '), $text))));
+        return ucfirst(strtolower(trim(preg_replace(['/([A-Z])/', '/[_\s]+/'], ['_$1', ' '], $text))));
     }
 
     /**
diff --git a/src/Symfony/Component/Form/FormRendererEngineInterface.php b/src/Symfony/Component/Form/FormRendererEngineInterface.php
index d3632d3c263c..9ae5233f4627 100644
--- a/src/Symfony/Component/Form/FormRendererEngineInterface.php
+++ b/src/Symfony/Component/Form/FormRendererEngineInterface.php
@@ -136,5 +136,5 @@ public function getResourceHierarchyLevel(FormView $view, array $blockNameHierar
      *
      * @return string The HTML markup
      */
-    public function renderBlock(FormView $view, $resource, $blockName, array $variables = array());
+    public function renderBlock(FormView $view, $resource, $blockName, array $variables = []);
 }
diff --git a/src/Symfony/Component/Form/FormRendererInterface.php b/src/Symfony/Component/Form/FormRendererInterface.php
index 4396e5b5831c..65d6480ef033 100644
--- a/src/Symfony/Component/Form/FormRendererInterface.php
+++ b/src/Symfony/Component/Form/FormRendererInterface.php
@@ -45,7 +45,7 @@ public function setTheme(FormView $view, $themes /*, $useDefaultThemes = true */
      *
      * @return string The HTML markup
      */
-    public function renderBlock(FormView $view, $blockName, array $variables = array());
+    public function renderBlock(FormView $view, $blockName, array $variables = []);
 
     /**
      * Searches and renders a block for a given name suffix.
@@ -63,7 +63,7 @@ public function renderBlock(FormView $view, $blockName, array $variables = array
      *
      * @return string The HTML markup
      */
-    public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $variables = array());
+    public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $variables = []);
 
     /**
      * Renders a CSRF token.
diff --git a/src/Symfony/Component/Form/FormTypeGuesserChain.php b/src/Symfony/Component/Form/FormTypeGuesserChain.php
index 08f8cfd06659..f38ba8e5d431 100644
--- a/src/Symfony/Component/Form/FormTypeGuesserChain.php
+++ b/src/Symfony/Component/Form/FormTypeGuesserChain.php
@@ -16,7 +16,7 @@
 
 class FormTypeGuesserChain implements FormTypeGuesserInterface
 {
-    private $guessers = array();
+    private $guessers = [];
 
     /**
      * @param FormTypeGuesserInterface[] $guessers Guessers as instances of FormTypeGuesserInterface
@@ -93,7 +93,7 @@ public function guessPattern($class, $property)
      */
     private function guess(\Closure $closure)
     {
-        $guesses = array();
+        $guesses = [];
 
         foreach ($this->guessers as $guesser) {
             if ($guess = $closure($guesser)) {
diff --git a/src/Symfony/Component/Form/FormView.php b/src/Symfony/Component/Form/FormView.php
index 25e9980f316c..0d1310b22d11 100644
--- a/src/Symfony/Component/Form/FormView.php
+++ b/src/Symfony/Component/Form/FormView.php
@@ -21,10 +21,10 @@ class FormView implements \ArrayAccess, \IteratorAggregate, \Countable
     /**
      * The variables assigned to this view.
      */
-    public $vars = array(
+    public $vars = [
         'value' => null,
-        'attr' => array(),
-    );
+        'attr' => [],
+    ];
 
     /**
      * The parent view.
@@ -36,7 +36,7 @@ class FormView implements \ArrayAccess, \IteratorAggregate, \Countable
      *
      * @var FormView[]
      */
-    public $children = array();
+    public $children = [];
 
     /**
      * Is the form attached to this renderer rendered?
diff --git a/src/Symfony/Component/Form/NativeRequestHandler.php b/src/Symfony/Component/Form/NativeRequestHandler.php
index 94210d51e85a..ffe91ba7604d 100644
--- a/src/Symfony/Component/Form/NativeRequestHandler.php
+++ b/src/Symfony/Component/Form/NativeRequestHandler.php
@@ -26,13 +26,13 @@ class NativeRequestHandler implements RequestHandlerInterface
     /**
      * The allowed keys of the $_FILES array.
      */
-    private static $fileKeys = array(
+    private static $fileKeys = [
         'error',
         'name',
         'size',
         'tmp_name',
         'type',
-    );
+    ];
 
     public function __construct(ServerParams $params = null)
     {
@@ -80,13 +80,13 @@ public function handleRequest(FormInterface $form, $request = null)
                 $form->addError(new FormError(
                     \call_user_func($form->getConfig()->getOption('upload_max_size_message')),
                     null,
-                    array('{{ max }}' => $this->serverParams->getNormalizedIniPostMaxSize())
+                    ['{{ max }}' => $this->serverParams->getNormalizedIniPostMaxSize()]
                 ));
 
                 return;
             }
 
-            $fixedFiles = array();
+            $fixedFiles = [];
             foreach ($_FILES as $fileKey => $file) {
                 $fixedFiles[$fileKey] = self::stripEmptyFiles(self::fixPhpFilesArray($file));
             }
@@ -95,7 +95,7 @@ public function handleRequest(FormInterface $form, $request = null)
                 $params = $_POST;
                 $files = $fixedFiles;
             } elseif (array_key_exists($name, $_POST) || array_key_exists($name, $fixedFiles)) {
-                $default = $form->getConfig()->getCompound() ? array() : null;
+                $default = $form->getConfig()->getCompound() ? [] : null;
                 $params = array_key_exists($name, $_POST) ? $_POST[$name] : $default;
                 $files = array_key_exists($name, $fixedFiles) ? $fixedFiles[$name] : $default;
             } else {
@@ -183,13 +183,13 @@ private static function fixPhpFilesArray($data)
         }
 
         foreach ($data['name'] as $key => $name) {
-            $files[$key] = self::fixPhpFilesArray(array(
+            $files[$key] = self::fixPhpFilesArray([
                 'error' => $data['error'][$key],
                 'name' => $name,
                 'type' => $data['type'][$key],
                 'tmp_name' => $data['tmp_name'][$key],
                 'size' => $data['size'][$key],
-            ));
+            ]);
         }
 
         return $files;
diff --git a/src/Symfony/Component/Form/PreloadedExtension.php b/src/Symfony/Component/Form/PreloadedExtension.php
index b26dbe638d8c..759ae9ad17b7 100644
--- a/src/Symfony/Component/Form/PreloadedExtension.php
+++ b/src/Symfony/Component/Form/PreloadedExtension.php
@@ -20,8 +20,8 @@
  */
 class PreloadedExtension implements FormExtensionInterface
 {
-    private $types = array();
-    private $typeExtensions = array();
+    private $types = [];
+    private $typeExtensions = [];
     private $typeGuesser;
 
     /**
@@ -68,7 +68,7 @@ public function getTypeExtensions($name)
     {
         return isset($this->typeExtensions[$name])
             ? $this->typeExtensions[$name]
-            : array();
+            : [];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/ResolvedFormType.php b/src/Symfony/Component/Form/ResolvedFormType.php
index 4a0c9588a7d5..e4ca7bbd94dd 100644
--- a/src/Symfony/Component/Form/ResolvedFormType.php
+++ b/src/Symfony/Component/Form/ResolvedFormType.php
@@ -42,7 +42,7 @@ class ResolvedFormType implements ResolvedFormTypeInterface
      */
     private $optionsResolver;
 
-    public function __construct(FormTypeInterface $innerType, array $typeExtensions = array(), ResolvedFormTypeInterface $parent = null)
+    public function __construct(FormTypeInterface $innerType, array $typeExtensions = [], ResolvedFormTypeInterface $parent = null)
     {
         foreach ($typeExtensions as $extension) {
             if (!$extension instanceof FormTypeExtensionInterface) {
@@ -90,7 +90,7 @@ public function getTypeExtensions()
     /**
      * {@inheritdoc}
      */
-    public function createBuilder(FormFactoryInterface $factory, $name, array $options = array())
+    public function createBuilder(FormFactoryInterface $factory, $name, array $options = [])
     {
         $options = $this->getOptionsResolver()->resolve($options);
 
diff --git a/src/Symfony/Component/Form/ResolvedFormTypeInterface.php b/src/Symfony/Component/Form/ResolvedFormTypeInterface.php
index dc3b81d2fa2a..c4ab1d647780 100644
--- a/src/Symfony/Component/Form/ResolvedFormTypeInterface.php
+++ b/src/Symfony/Component/Form/ResolvedFormTypeInterface.php
@@ -57,7 +57,7 @@ public function getTypeExtensions();
      *
      * @return FormBuilderInterface The created form builder
      */
-    public function createBuilder(FormFactoryInterface $factory, $name, array $options = array());
+    public function createBuilder(FormFactoryInterface $factory, $name, array $options = []);
 
     /**
      * Creates a new form view for a form of this type.
diff --git a/src/Symfony/Component/Form/Test/FormIntegrationTestCase.php b/src/Symfony/Component/Form/Test/FormIntegrationTestCase.php
index 28e6cb385efa..7aa7c1c438ba 100644
--- a/src/Symfony/Component/Form/Test/FormIntegrationTestCase.php
+++ b/src/Symfony/Component/Form/Test/FormIntegrationTestCase.php
@@ -37,21 +37,21 @@ protected function setUp()
 
     protected function getExtensions()
     {
-        return array();
+        return [];
     }
 
     protected function getTypeExtensions()
     {
-        return array();
+        return [];
     }
 
     protected function getTypes()
     {
-        return array();
+        return [];
     }
 
     protected function getTypeGuessers()
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Form/Test/TypeTestCase.php b/src/Symfony/Component/Form/Test/TypeTestCase.php
index aa7516f56358..41e0333b0954 100644
--- a/src/Symfony/Component/Form/Test/TypeTestCase.php
+++ b/src/Symfony/Component/Form/Test/TypeTestCase.php
@@ -44,7 +44,7 @@ protected function tearDown()
 
     protected function getExtensions()
     {
-        $extensions = array();
+        $extensions = [];
 
         if (\in_array(ValidatorExtensionTrait::class, class_uses($this))) {
             $extensions[] = $this->getValidatorExtension();
diff --git a/src/Symfony/Component/Form/Tests/AbstractDivLayoutTest.php b/src/Symfony/Component/Form/Tests/AbstractDivLayoutTest.php
index 36bb31c30151..ab8444974959 100644
--- a/src/Symfony/Component/Form/Tests/AbstractDivLayoutTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractDivLayoutTest.php
@@ -39,11 +39,11 @@ public function testRow()
     public function testRowOverrideVariables()
     {
         $view = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType')->createView();
-        $html = $this->renderRow($view, array(
-            'attr' => array('class' => 'my&class'),
+        $html = $this->renderRow($view, [
+            'attr' => ['class' => 'my&class'],
             'label' => 'foo&bar',
-            'label_attr' => array('class' => 'my&label&class'),
-        ));
+            'label_attr' => ['class' => 'my&label&class'],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/div
@@ -283,11 +283,11 @@ public function testRestAndRepeatedWithWidgetPerChild()
 
     public function testCollection()
     {
-        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', array('a', 'b'), array(
+        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', ['a', 'b'], [
             'entry_type' => 'Symfony\Component\Form\Extension\Core\Type\TextType',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div[./input[@type="text"][@value="a"]]
@@ -301,15 +301,15 @@ public function testCollection()
     // https://github.com/symfony/symfony/issues/5038
     public function testCollectionWithAlternatingRowTypes()
     {
-        $data = array(
-            array('title' => 'a'),
-            array('title' => 'b'),
-        );
-        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', $data, array(
+        $data = [
+            ['title' => 'a'],
+            ['title' => 'b'],
+        ];
+        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', $data, [
             'entry_type' => 'Symfony\Component\Form\Tests\Fixtures\AlternatingRowType',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div[./div/div/input[@type="text"][@value="a"]]
@@ -323,11 +323,11 @@ public function testCollectionWithAlternatingRowTypes()
 
     public function testEmptyCollection()
     {
-        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', array(), array(
+        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', [], [
             'entry_type' => 'Symfony\Component\Form\Extension\Core\Type\TextType',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [./input[@type="hidden"][@id="names__token"]]
     [count(./div)=0]
@@ -340,15 +340,15 @@ public function testCollectionRow()
         $collection = $this->factory->createNamedBuilder(
             'collection',
             'Symfony\Component\Form\Extension\Core\Type\CollectionType',
-            array('a', 'b'),
-            array('entry_type' => 'Symfony\Component\Form\Extension\Core\Type\TextType')
+            ['a', 'b'],
+            ['entry_type' => 'Symfony\Component\Form\Extension\Core\Type\TextType']
         );
 
         $form = $this->factory->createNamedBuilder('form', 'Symfony\Component\Form\Extension\Core\Type\FormType')
             ->add($collection)
             ->getForm();
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -385,10 +385,10 @@ public function testForm()
             ->getForm();
 
         // include ampersands everywhere to validate escaping
-        $html = $this->renderForm($form->createView(), array(
+        $html = $this->renderForm($form->createView(), [
             'id' => 'my&id',
-            'attr' => array('class' => 'my&class'),
-        ));
+            'attr' => ['class' => 'my&class'],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/form
@@ -426,7 +426,7 @@ public function testFormWidget()
             ->add('lastName', 'Symfony\Component\Form\Extension\Core\Type\TextType')
             ->getForm();
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -451,14 +451,14 @@ public function testNestedFormError()
     {
         $form = $this->factory->createNamedBuilder('name', 'Symfony\Component\Form\Extension\Core\Type\FormType')
             ->add($this->factory
-                ->createNamedBuilder('child', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array('error_bubbling' => false))
+                ->createNamedBuilder('child', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, ['error_bubbling' => false])
                 ->add('grandChild', 'Symfony\Component\Form\Extension\Core\Type\FormType')
             )
             ->getForm();
 
         $form->get('child')->addError(new FormError('[trans]Error![/trans]'));
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div/label
@@ -483,7 +483,7 @@ public function testCsrf()
             )
             ->getForm();
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -496,11 +496,11 @@ public function testCsrf()
 
     public function testRepeated()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RepeatedType', 'foobar', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RepeatedType', 'foobar', [
             'type' => 'Symfony\Component\Form\Extension\Core\Type\TextType',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -522,13 +522,13 @@ public function testRepeated()
 
     public function testRepeatedWithCustomOptions()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RepeatedType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RepeatedType', null, [
             // the global required value cannot be overridden
-            'first_options' => array('label' => 'Test', 'required' => false),
-            'second_options' => array('label' => 'Test2'),
-        ));
+            'first_options' => ['label' => 'Test', 'required' => false],
+            'second_options' => ['label' => 'Test2'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -554,7 +554,7 @@ public function testSearchInputName()
             ->add('name', 'Symfony\Component\Form\Extension\Core\Type\SearchType')
             ->getForm();
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -586,9 +586,9 @@ public function testLabelHasNoId()
 
     public function testLabelIsNotRenderedWhenSetToFalse()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'label' => false,
-        ));
+        ]);
         $html = $this->renderRow($form->createView());
 
         $this->assertMatchesXpath($html,
@@ -637,7 +637,7 @@ public function testThemeInheritance($parentTheme, $childTheme)
         $this->setTheme($view, $parentTheme);
         $this->setTheme($view['child'], $childTheme);
 
-        $this->assertWidgetMatchesXpath($view, array(),
+        $this->assertWidgetMatchesXpath($view, [],
 '/div
     [
         ./div
@@ -669,11 +669,11 @@ public function testThemeInheritance($parentTheme, $childTheme)
      */
     public function testCollectionRowWithCustomBlock()
     {
-        $collection = array('one', 'two', 'three');
+        $collection = ['one', 'two', 'three'];
         $form = $this->factory->createNamedBuilder('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', $collection)
             ->getForm();
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div[./label[.="Custom label: [trans]0[/trans]"]]
@@ -690,13 +690,13 @@ public function testCollectionRowWithCustomBlock()
      */
     public function testChoiceRowWithCustomBlock()
     {
-        $form = $this->factory->createNamedBuilder('name_c', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', 'a', array(
-                'choices' => array('ChoiceA' => 'a', 'ChoiceB' => 'b'),
+        $form = $this->factory->createNamedBuilder('name_c', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', 'a', [
+                'choices' => ['ChoiceA' => 'a', 'ChoiceB' => 'b'],
                 'expanded' => true,
-            ))
+            ])
             ->getForm();
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./label[.="Custom name label: [trans]ChoiceA[/trans]"]
@@ -708,14 +708,14 @@ public function testChoiceRowWithCustomBlock()
 
     public function testSingleChoiceExpandedWithLabelsAsFalse()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => false,
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_0"][@value="&a"][@checked]
@@ -730,8 +730,8 @@ public function testSingleChoiceExpandedWithLabelsAsFalse()
 
     public function testSingleChoiceExpandedWithLabelsSetByCallable()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'choice_label' => function ($choice, $label, $value) {
                 if ('&b' === $choice) {
                     return false;
@@ -741,9 +741,9 @@ public function testSingleChoiceExpandedWithLabelsSetByCallable()
             },
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_0"][@value="&a"][@checked]
@@ -761,16 +761,16 @@ public function testSingleChoiceExpandedWithLabelsSetByCallable()
 
     public function testSingleChoiceExpandedWithLabelsSetFalseByCallable()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => function () {
                 return false;
             },
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_0"][@value="&a"][@checked]
@@ -785,14 +785,14 @@ public function testSingleChoiceExpandedWithLabelsSetFalseByCallable()
 
     public function testMultipleChoiceExpandedWithLabelsAsFalse()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => false,
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="checkbox"][@name="name[]"][@id="name_0"][@value="&a"][@checked]
@@ -807,8 +807,8 @@ public function testMultipleChoiceExpandedWithLabelsAsFalse()
 
     public function testMultipleChoiceExpandedWithLabelsSetByCallable()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'choice_label' => function ($choice, $label, $value) {
                 if ('&b' === $choice) {
                     return false;
@@ -818,9 +818,9 @@ public function testMultipleChoiceExpandedWithLabelsSetByCallable()
             },
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="checkbox"][@name="name[]"][@id="name_0"][@value="&a"][@checked]
@@ -838,16 +838,16 @@ public function testMultipleChoiceExpandedWithLabelsSetByCallable()
 
     public function testMultipleChoiceExpandedWithLabelsSetFalseByCallable()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => function () {
                 return false;
             },
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="checkbox"][@name="name[]"][@id="name_0"][@value="&a"][@checked]
@@ -901,16 +901,16 @@ public function testFormEndWithoutRest()
         $this->renderWidget($view['field1']);
 
         // Rest should only contain field2, but isn't rendered
-        $html = $this->renderEnd($view, array('render_rest' => false));
+        $html = $this->renderEnd($view, ['render_rest' => false]);
 
         $this->assertEquals('</form>', $html);
     }
 
     public function testWidgetContainerAttributes()
     {
-        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
-            'attr' => array('class' => 'foobar', 'data-foo' => 'bar'),
-        ));
+        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
+            'attr' => ['class' => 'foobar', 'data-foo' => 'bar'],
+        ]);
 
         $form->add('text', 'Symfony\Component\Form\Extension\Core\Type\TextType');
 
@@ -922,9 +922,9 @@ public function testWidgetContainerAttributes()
 
     public function testWidgetContainerAttributeNameRepeatedIfTrue()
     {
-        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
-            'attr' => array('foo' => true),
-        ));
+        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
+            'attr' => ['foo' => true],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
diff --git a/src/Symfony/Component/Form/Tests/AbstractExtensionTest.php b/src/Symfony/Component/Form/Tests/AbstractExtensionTest.php
index 815b4f808a1f..c3fa1b6cf9f3 100644
--- a/src/Symfony/Component/Form/Tests/AbstractExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractExtensionTest.php
@@ -35,7 +35,7 @@ class ConcreteExtension extends AbstractExtension
 {
     protected function loadTypes()
     {
-        return array(new FooType());
+        return [new FooType()];
     }
 
     protected function loadTypeGuesser()
diff --git a/src/Symfony/Component/Form/Tests/AbstractFormTest.php b/src/Symfony/Component/Form/Tests/AbstractFormTest.php
index 977b5f40e0ec..0ea55f9208b1 100644
--- a/src/Symfony/Component/Form/Tests/AbstractFormTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractFormTest.php
@@ -60,7 +60,7 @@ abstract protected function createForm();
      *
      * @return FormBuilder
      */
-    protected function getBuilder($name = 'name', EventDispatcherInterface $dispatcher = null, $dataClass = null, array $options = array())
+    protected function getBuilder($name = 'name', EventDispatcherInterface $dispatcher = null, $dataClass = null, array $options = [])
     {
         return new FormBuilder($name, $dataClass, $dispatcher ?: $this->dispatcher, $this->factory, $options);
     }
diff --git a/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php b/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
index 278bdbe85478..bb7fc197abfc 100644
--- a/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
@@ -19,7 +19,7 @@
 abstract class AbstractLayoutTest extends FormIntegrationTestCase
 {
     protected $csrfTokenManager;
-    protected $testableFeatures = array();
+    protected $testableFeatures = [];
 
     protected function setUp()
     {
@@ -36,9 +36,9 @@ protected function setUp()
 
     protected function getExtensions()
     {
-        return array(
+        return [
             new CsrfExtension($this->csrfTokenManager),
-        );
+        ];
     }
 
     protected function tearDown()
@@ -91,10 +91,10 @@ protected function assertMatchesXpath($html, $expression, $count = 1)
     protected function assertWidgetMatchesXpath(FormView $view, array $vars, $xpath)
     {
         // include ampersands everywhere to validate escaping
-        $html = $this->renderWidget($view, array_merge(array(
+        $html = $this->renderWidget($view, array_merge([
             'id' => 'my&id',
-            'attr' => array('class' => 'my&class'),
-        ), $vars));
+            'attr' => ['class' => 'my&class'],
+        ], $vars));
 
         if (!isset($vars['id'])) {
             $xpath = trim($xpath).'
@@ -109,21 +109,21 @@ protected function assertWidgetMatchesXpath(FormView $view, array $vars, $xpath)
         $this->assertMatchesXpath($html, $xpath);
     }
 
-    abstract protected function renderForm(FormView $view, array $vars = array());
+    abstract protected function renderForm(FormView $view, array $vars = []);
 
-    abstract protected function renderLabel(FormView $view, $label = null, array $vars = array());
+    abstract protected function renderLabel(FormView $view, $label = null, array $vars = []);
 
     abstract protected function renderErrors(FormView $view);
 
-    abstract protected function renderWidget(FormView $view, array $vars = array());
+    abstract protected function renderWidget(FormView $view, array $vars = []);
 
-    abstract protected function renderRow(FormView $view, array $vars = array());
+    abstract protected function renderRow(FormView $view, array $vars = []);
 
-    abstract protected function renderRest(FormView $view, array $vars = array());
+    abstract protected function renderRest(FormView $view, array $vars = []);
 
-    abstract protected function renderStart(FormView $view, array $vars = array());
+    abstract protected function renderStart(FormView $view, array $vars = []);
 
-    abstract protected function renderEnd(FormView $view, array $vars = array());
+    abstract protected function renderEnd(FormView $view, array $vars = []);
 
     abstract protected function setTheme(FormView $view, array $themes, $useDefaultThemes = true);
 
@@ -131,7 +131,7 @@ public function testLabel()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
         $view = $form->createView();
-        $this->renderWidget($view, array('label' => 'foo'));
+        $this->renderWidget($view, ['label' => 'foo']);
         $html = $this->renderLabel($view);
 
         $this->assertMatchesXpath($html,
@@ -144,9 +144,9 @@ public function testLabel()
 
     public function testLabelWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'translation_domain' => false,
-        ));
+        ]);
 
         $this->assertMatchesXpath($this->renderLabel($form->createView()),
 '/label
@@ -160,7 +160,7 @@ public function testLabelOnForm()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType');
         $view = $form->createView();
-        $this->renderWidget($view, array('label' => 'foo'));
+        $this->renderWidget($view, ['label' => 'foo']);
         $html = $this->renderLabel($view);
 
         $this->assertMatchesXpath($html,
@@ -173,9 +173,9 @@ public function testLabelOnForm()
 
     public function testLabelWithCustomTextPassedAsOption()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'label' => 'Custom label',
-        ));
+        ]);
         $html = $this->renderLabel($form->createView());
 
         $this->assertMatchesXpath($html,
@@ -201,9 +201,9 @@ public function testLabelWithCustomTextPassedDirectly()
 
     public function testLabelWithCustomTextPassedAsOptionAndDirectly()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'label' => 'Custom label',
-        ));
+        ]);
         $html = $this->renderLabel($form->createView(), 'Overridden label');
 
         $this->assertMatchesXpath($html,
@@ -217,11 +217,11 @@ public function testLabelWithCustomTextPassedAsOptionAndDirectly()
     public function testLabelDoesNotRenderFieldAttributes()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), null, array(
-            'attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -234,11 +234,11 @@ public function testLabelDoesNotRenderFieldAttributes()
     public function testLabelWithCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(),
10000
 null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -251,11 +251,11 @@ public function testLabelWithCustomAttributesPassedDirectly()
     public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType');
-        $html = $this->renderLabel($form->createView(), 'Custom label', array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), 'Custom label', [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -269,14 +269,14 @@ public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
     // https://github.com/symfony/symfony/issues/5029
     public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'label' => 'Custom label',
-        ));
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        ]);
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
             '/label
@@ -293,7 +293,7 @@ public function testLabelFormatName()
             ->add('myfield', 'Symfony\Component\Form\Extension\Core\Type\TextType')
             ->getForm();
         $view = $form->get('myfield')->createView();
-        $html = $this->renderLabel($view, null, array('label_format' => 'form.%name%'));
+        $html = $this->renderLabel($view, null, ['label_format' => 'form.%name%']);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -309,7 +309,7 @@ public function testLabelFormatId()
             ->add('myfield', 'Symfony\Component\Form\Extension\Core\Type\TextType')
             ->getForm();
         $view = $form->get('myfield')->createView();
-        $html = $this->renderLabel($view, null, array('label_format' => 'form.%id%'));
+        $html = $this->renderLabel($view, null, ['label_format' => 'form.%id%']);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -321,7 +321,7 @@ public function testLabelFormatId()
 
     public function testLabelFormatAsFormOption()
     {
-        $options = array('label_format' => 'form.%name%');
+        $options = ['label_format' => 'form.%name%'];
 
         $form = $this->factory->createNamedBuilder('myform', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, $options)
             ->add('myfield', 'Symfony\Component\Form\Extension\Core\Type\TextType')
@@ -339,10 +339,10 @@ public function testLabelFormatAsFormOption()
 
     public function testLabelFormatOverriddenOption()
     {
-        $options = array('label_format' => 'form.%name%');
+        $options = ['label_format' => 'form.%name%'];
 
         $form = $this->factory->createNamedBuilder('myform', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, $options)
-            ->add('myfield', 'Symfony\Component\Form\Extension\Core\Type\TextType', array('label_format' => 'field.%name%'))
+            ->add('myfield', 'Symfony\Component\Form\Extension\Core\Type\TextType', ['label_format' => 'field.%name%'])
             ->getForm();
         $view = $form->get('myfield')->createView();
         $html = $this->renderLabel($view);
@@ -357,9 +357,9 @@ public function testLabelFormatOverriddenOption()
 
     public function testLabelWithoutTranslationOnButton()
     {
-        $form = $this->factory->createNamedBuilder('myform', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->createNamedBuilder('myform', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'translation_domain' => false,
-            ))
+            ])
             ->add('mybutton', 'Symfony\Component\Form\Extension\Core\Type\ButtonType')
             ->getForm();
         $view = $form->get('mybutton')->createView();
@@ -380,7 +380,7 @@ public function testLabelFormatOnButton()
             ->add('mybutton', 'Symfony\Component\Form\Extension\Core\Type\ButtonType')
             ->getForm();
         $view = $form->get('mybutton')->createView();
-        $html = $this->renderWidget($view, array('label_format' => 'form.%name%'));
+        $html = $this->renderWidget($view, ['label_format' => 'form.%name%']);
 
         $this->assertMatchesXpath($html,
 '/button
@@ -397,7 +397,7 @@ public function testLabelFormatOnButtonId()
             ->add('mybutton', 'Symfony\Component\Form\Extension\Core\Type\ButtonType')
             ->getForm();
         $view = $form->get('mybutton')->createView();
-        $html = $this->renderWidget($view, array('label_format' => 'form.%id%'));
+        $html = $this->renderWidget($view, ['label_format' => 'form.%id%']);
 
         $this->assertMatchesXpath($html,
 '/button
@@ -449,7 +449,7 @@ public function testCheckedCheckbox()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType', true);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="checkbox"]
     [@name="name"]
@@ -463,7 +463,7 @@ public function testUncheckedCheckbox()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType', false);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="checkbox"]
     [@name="name"]
@@ -474,11 +474,11 @@ public function testUncheckedCheckbox()
 
     public function testCheckboxWithValue()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType', false, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType', false, [
             'value' => 'foo&bar',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="checkbox"]
     [@name="name"]
@@ -489,11 +489,11 @@ public function testCheckboxWithValue()
 
     public function testSingleChoice()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
         // If the field is collapsed, has no "multiple" attribute, is required but
         // has *no* empty value, the "required" must not be added, otherwise
@@ -507,7 +507,7 @@ public function testSingleChoice()
         //  have a multiple attribute specified, and has a display size of 1,
         //  then the select element must have a placeholder label option."
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [not(@required)]
@@ -522,14 +522,14 @@ public function testSingleChoice()
 
     public function testSelectWithSizeBiggerThanOneCanBeRequired()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, array(
-            'choices' => array('a', 'b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, [
+            'choices' => ['a', 'b'],
             'multiple' => false,
             'expanded' => false,
-            'attr' => array('size' => 2),
-        ));
+            'attr' => ['size' => 2],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [@required="required"]
@@ -541,14 +541,14 @@ public function testSelectWithSizeBiggerThanOneCanBeRequired()
 
     public function testSingleChoiceWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [not(@required)]
@@ -563,16 +563,16 @@ public function testSingleChoiceWithoutTranslation()
 
     public function testSingleChoiceWithPlaceholderWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
             'required' => false,
             'translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [not(@required)]
@@ -588,14 +588,14 @@ public function testSingleChoiceWithPlaceholderWithoutTranslation()
 
     public function testSingleChoiceAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [not(@required)]
@@ -610,14 +610,14 @@ public function testSingleChoiceAttributes()
 
     public function testSingleChoiceAttributesWithMainAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
-            'attr' => array('class' => 'bar&baz'),
-        ));
+            'attr' => ['class' => 'bar&baz'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'bar&baz')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'bar&baz']],
 '/select
     [@name="name"]
     [@class="bar&baz"]
@@ -633,14 +633,14 @@ public function testSingleChoiceAttributesWithMainAttributes()
 
     public function testSingleExpandedChoiceAttributesWithMainAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
-            'attr' => array('class' => 'bar&baz'),
-        ));
+            'attr' => ['class' => 'bar&baz'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'bar&baz')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'bar&baz']],
 '/div
     [@class="bar&baz"]
     [
@@ -657,14 +657,14 @@ public function testSingleExpandedChoiceAttributesWithMainAttributes()
 
     public function testSingleChoiceWithPreferred()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'preferred_choices' => array('&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'preferred_choices' => ['&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('separator' => '-- sep --'),
+        $this->assertWidgetMatchesXpath($form->createView(), ['separator' => '-- sep --'],
 '/select
     [@name="name"]
     [not(@required)]
@@ -680,14 +680,14 @@ public function testSingleChoiceWithPreferred()
 
     public function testSingleChoiceWithPreferredAndNoSeparator()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'preferred_choices' => array('&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'preferred_choices' => ['&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('separator' => null),
+        $this->assertWidgetMatchesXpath($form->createView(), ['separator' => null],
 '/select
     [@name="name"]
     [not(@required)]
@@ -702,14 +702,14 @@ public function testSingleChoiceWithPreferredAndNoSeparator()
 
     public function testSingleChoiceWithPreferredAndBlankSeparator()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'preferred_choices' => array('&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'preferred_choices' => ['&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('separator' => ''),
+        $this->assertWidgetMatchesXpath($form->createView(), ['separator' => ''],
 '/select
     [@name="name"]
     [not(@required)]
@@ -725,14 +725,14 @@ public function testSingleChoiceWithPreferredAndBlankSeparator()
 
     public function testChoiceWithOnlyPreferred()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'preferred_choices' => array('&a', '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'preferred_choices' => ['&a', '&b'],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [count(./option)=2]
 '
@@ -741,14 +741,14 @@ public function testChoiceWithOnlyPreferred()
 
     public function testSingleChoiceNonRequired()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => false,
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [not(@required)]
@@ -764,14 +764,14 @@ public function testSingleChoiceNonRequired()
 
     public function testSingleChoiceNonRequiredNoneSelected()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', null, [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => false,
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [not(@required)]
@@ -787,15 +787,15 @@ public function testSingleChoiceNonRequiredNoneSelected()
 
     public function testSingleChoiceNonRequiredWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
             'required' => false,
             'placeholder' => 'Select&Anything&Not&Me',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [not(@required)]
@@ -811,18 +811,18 @@ public function testSingleChoiceNonRequiredWithPlaceholder()
 
     public function testSingleChoiceRequiredWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => true,
             'multiple' => false,
             'expanded' => false,
             'placeholder' => 'Test&Me',
-        ));
+        ]);
 
         // The "disabled" attribute was removed again due to a bug in the
         // BlackBerry 10 browser.
         // See https://github.com/symfony/symfony/pull/7678
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [@required="required"]
@@ -838,17 +838,17 @@ public function testSingleChoiceRequiredWithPlaceholder()
 
     public function testSingleChoiceRequiredWithPlaceholderViaView()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => true,
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
         // The "disabled" attribute was removed again due to a bug in the
         // BlackBerry 10 browser.
         // See https://github.com/symfony/symfony/pull/7678
-        $this->assertWidgetMatchesXpath($form->createView(), array('placeholder' => ''),
+        $this->assertWidgetMatchesXpath($form->createView(), ['placeholder' => ''],
 '/select
     [@name="name"]
     [@required="required"]
@@ -864,16 +864,16 @@ public function testSingleChoiceRequiredWithPlaceholderViaView()
 
     public function testSingleChoiceGrouped()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array(
-                'Group&1' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-                'Group&2' => array('Choice&C' => '&c'),
-            ),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => [
+                'Group&1' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+                'Group&2' => ['Choice&C' => '&c'],
+            ],
             'multiple' => false,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [./optgroup[@label="[trans]Group&1[/trans]"]
@@ -894,14 +894,14 @@ public function testSingleChoiceGrouped()
 
     public function testMultipleChoice()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => true,
             'multiple' => true,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name[]"]
     [@required="required"]
@@ -917,15 +917,15 @@ public function testMultipleChoice()
 
     public function testMultipleChoiceAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'required' => true,
             'multiple' => true,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name[]"]
     [@required="required"]
@@ -941,14 +941,14 @@ public function testMultipleChoiceAttributes()
 
     public function testMultipleChoiceSkipsPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => true,
             'expanded' => false,
             'placeholder' => 'Test&Me',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name[]"]
     [@multiple="multiple"]
@@ -963,14 +963,14 @@ public function testMultipleChoiceSkipsPlaceholder()
 
     public function testMultipleChoiceNonRequired()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'required' => false,
             'multiple' => true,
             'expanded' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name[]"]
     [@multiple="multiple"]
@@ -985,13 +985,13 @@ public function testMultipleChoiceNonRequired()
 
     public function testSingleChoiceExpanded()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_0"][@value="&a"][@checked]
@@ -1007,15 +1007,15 @@ public function testSingleChoiceExpanded()
 
     public function testSingleChoiceExpandedWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'choice_translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_0"][@value="&a"][@checked]
@@ -1031,14 +1031,14 @@ public function testSingleChoiceExpandedWithoutTranslation()
 
     public function testSingleChoiceExpandedAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_0"][@value="&a"][@checked]
@@ -1054,15 +1054,15 @@ public function testSingleChoiceExpandedAttributes()
 
     public function testSingleChoiceExpandedWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'placeholder' => 'Test&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_placeholder"][not(@checked)]
@@ -1080,16 +1080,16 @@ public function testSingleChoiceExpandedWithPlaceholder()
 
     public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choice_translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_placeholder"][not(@checked)]
@@ -1107,13 +1107,13 @@ public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
 
     public function testSingleChoiceExpandedWithBooleanValue()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', true, array(
-            'choices' => array('Choice&A' => '1', 'Choice&B' => '0'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', true, [
+            'choices' => ['Choice&A' => '1', 'Choice&B' => '0'],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="radio"][@name="name"][@id="name_0"][@checked]
@@ -1129,14 +1129,14 @@ public function testSingleChoiceExpandedWithBooleanValue()
 
     public function testMultipleChoiceExpanded()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="checkbox"][@name="name[]"][@id="name_0"][@checked][not(@required)]
@@ -1154,15 +1154,15 @@ public function testMultipleChoiceExpanded()
 
     public function testMultipleChoiceExpandedWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="checkbox"][@name="name[]"][@id="name_0"][@checked][not(@required)]
@@ -1180,15 +1180,15 @@ public function testMultipleChoiceExpandedWithoutTranslation()
 
     public function testMultipleChoiceExpandedAttributes()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input[@type="checkbox"][@name="name[]"][@id="name_0"][@checked][not(@required)]
@@ -1208,7 +1208,7 @@ public function testCountry()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CountryType', 'AT');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [./option[@value="AT"][@selected="selected"][.="Austria"]]
@@ -1219,12 +1219,12 @@ public function testCountry()
 
     public function testCountryWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CountryType', 'AT', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CountryType', 'AT', [
             'placeholder' => 'Select&Country',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [./option[@value=""][not(@selected)][not(@disabled)][.="[trans]Select&Country[/trans]"]]
@@ -1236,12 +1236,12 @@ public function testCountryWithPlaceholder()
 
     public function testDateTime()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', date('Y').'-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', date('Y').'-02-03 04:05:06', [
             'input' => 'string',
             'with_seconds' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1275,13 +1275,13 @@ public function testDateTime()
 
     public function testDateTimeWithPlaceholderGlobal()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', null, [
             'input' => 'string',
             'placeholder' => 'Change&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1315,14 +1315,14 @@ public function testDateTimeWithPlaceholderGlobal()
 
     public function testDateTimeWithHourAndMinute()
     {
-        $data = array('year' => date('Y'), 'month' => '2', 'day' => '3', 'hour' => '4', 'minute' => '5');
+        $data = ['year' => date('Y'), 'month' => '2', 'day' => '3', 'hour' => '4', 'minute' => '5'];
 
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', $data, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', $data, [
             'input' => 'array',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1356,12 +1356,12 @@ public function testDateTimeWithHourAndMinute()
 
     public function testDateTimeWithSeconds()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', date('Y').'-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', date('Y').'-02-03 04:05:06', [
             'input' => 'string',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -1398,13 +1398,13 @@ public function testDateTimeWithSeconds()
 
     public function testDateTimeSingleText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', [
             'input' => 'string',
             'date_widget' => 'single_text',
             'time_widget' => 'single_text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input
@@ -1424,14 +1424,14 @@ public function testDateTimeSingleText()
 
     public function testDateTimeWithWidgetSingleText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', [
             'input' => 'string',
             'widget' => 'single_text',
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="datetime-local"]
     [@name="name"]
@@ -1442,16 +1442,16 @@ public function testDateTimeWithWidgetSingleText()
 
     public function testDateTimeWithWidgetSingleTextIgnoreDateAndTimeWidgets()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateTimeType', '2011-02-03 04:05:06', [
             'input' => 'string',
             'date_widget' => 'choice',
             'time_widget' => 'choice',
             'widget' => 'single_text',
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="datetime-local"]
     [@name="name"]
@@ -1462,12 +1462,12 @@ public function testDateTimeWithWidgetSingleTextIgnoreDateAndTimeWidgets()
 
     public function testDateChoice()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', date('Y').'-02-03', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', date('Y').'-02-03', [
             'input' => 'string',
             'widget' => 'choice',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -1487,14 +1487,14 @@ public function testDateChoice()
 
     public function testDateChoiceWithPlaceholderGlobal()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', null, [
             'input' => 'string',
             'widget' => 'choice',
             'placeholder' => 'Change&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -1514,14 +1514,14 @@ public function testDateChoiceWithPlaceholderGlobal()
 
     public function testDateChoiceWithPlaceholderOnYear()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', null, [
             'input' => 'string',
             'widget' => 'choice',
             'required' => false,
-            'placeholder' => array('year' => 'Change&Me'),
-        ));
+            'placeholder' => ['year' => 'Change&Me'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -1541,12 +1541,12 @@ public function testDateChoiceWithPlaceholderOnYear()
 
     public function testDateText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', '2011-02-03', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', '2011-02-03', [
             'input' => 'string',
             'widget' => 'text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input
@@ -1569,12 +1569,12 @@ public function testDateText()
 
     public function testDateSingleText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', '2011-02-03', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\DateType', '2011-02-03', [
             'input' => 'string',
             'widget' => 'single_text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="date"]
     [@name="name"]
@@ -1597,11 +1597,11 @@ public function testDateErrorBubbling()
 
     public function testBirthDay()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType', '2000-02-03', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType', '2000-02-03', [
             'input' => 'string',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -1621,13 +1621,13 @@ public function testBirthDay()
 
     public function testBirthDayWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType', '1950-01-01', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType', '1950-01-01', [
             'input' => 'string',
             'placeholder' => '',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -1652,7 +1652,7 @@ public function testEmail()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\EmailType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="email"]
     [@name="name"]
@@ -1664,11 +1664,11 @@ public function testEmail()
 
     public function testEmailWithMaxLength()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\EmailType', 'foo&bar', array(
-            'attr' => array('maxlength' => 123),
-        ));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\EmailType', 'foo&bar', [
+            'attr' => ['maxlength' => 123],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="email"]
     [@name="name"]
@@ -1682,7 +1682,7 @@ public function testFile()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\FileType');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="file"]
 '
@@ -1693,7 +1693,7 @@ public function testHidden()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\HiddenType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="hidden"]
     [@name="name"]
@@ -1704,11 +1704,11 @@ public function testHidden()
 
     public function testDisabled()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'disabled' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="text"]
     [@name="name"]
@@ -1721,7 +1721,7 @@ public function testInteger()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\IntegerType', 123);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="number"]
     [@name="name"]
@@ -1734,7 +1734,7 @@ public function testLanguage()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\LanguageType', 'de');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [./option[@value="de"][@selected="selected"][.="German"]]
@@ -1747,7 +1747,7 @@ public function testLocale()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\LocaleType', 'de_AT');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [./option[@value="de_AT"][@selected="selected"][.="German (Austria)"]]
@@ -1758,11 +1758,11 @@ public function testLocale()
 
     public function testMoney()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\MoneyType', 1234.56, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\MoneyType', 1234.56, [
             'currency' => 'EUR',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="text"]
     [@name="name"]
@@ -1776,7 +1776,7 @@ public function testNumber()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\NumberType', 1234.56);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="text"]
     [@name="name"]
@@ -1789,7 +1789,7 @@ public function testPassword()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="password"]
     [@name="name"]
@@ -1799,12 +1799,12 @@ public function testPassword()
 
     public function testPasswordSubmittedWithNotAlwaysEmpty()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', null, [
             'always_empty' => false,
-        ));
+        ]);
         $form->submit('foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="password"]
     [@name="name"]
@@ -1815,11 +1815,11 @@ public function testPasswordSubmittedWithNotAlwaysEmpty()
 
     public function testPasswordWithMaxLength()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', 'foo&bar', array(
-            'attr' => array('maxlength' => 123),
-        ));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', 'foo&bar', [
+            'attr' => ['maxlength' => 123],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="password"]
     [@name="name"]
@@ -1832,7 +1832,7 @@ public function testPercent()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\PercentType', 0.1);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="text"]
     [@name="name"]
@@ -1846,7 +1846,7 @@ public function testCheckedRadio()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RadioType', true);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="radio"]
     [@name="name"]
@@ -1860,7 +1860,7 @@ public function testUncheckedRadio()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RadioType', false);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="radio"]
     [@name="name"]
@@ -1871,11 +1871,11 @@ public function testUncheckedRadio()
 
     public function testRadioWithValue()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RadioType', false, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RadioType', false, [
             'value' => 'foo&bar',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="radio"]
     [@name="name"]
@@ -1886,9 +1886,9 @@ public function testRadioWithValue()
 
     public function testRange()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RangeType', 42, array('attr' => array('min' => 5)));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RangeType', 42, ['attr' => ['min' => 5]]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="range"]
     [@name="name"]
@@ -1900,9 +1900,9 @@ public function testRange()
 
     public function testRangeWithMinMaxValues()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RangeType', 42, array('attr' => array('min' => 5, 'max' => 57)));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RangeType', 42, ['attr' => ['min' => 5, 'max' => 57]]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="range"]
     [@name="name"]
@@ -1915,11 +1915,11 @@ public function testRangeWithMinMaxValues()
 
     public function testTextarea()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextareaType', 'foo&bar', array(
-            'attr' => array('pattern' => 'foo'),
-        ));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextareaType', 'foo&bar', [
+            'attr' => ['pattern' => 'foo'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/textarea
     [@name="name"]
     [@pattern="foo"]
@@ -1932,7 +1932,7 @@ public function testText()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="text"]
     [@name="name"]
@@ -1944,11 +1944,11 @@ public function testText()
 
     public function testTextWithMaxLength()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'foo&bar', array(
-            'attr' => array('maxlength' => 123),
-        ));
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'foo&bar', [
+            'attr' => ['maxlength' => 123],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="text"]
     [@name="name"]
@@ -1962,7 +1962,7 @@ public function testSearch()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\SearchType', 'foo&bar');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="search"]
     [@name="name"]
@@ -1974,12 +1974,12 @@ public function testSearch()
 
     public function testTime()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', [
             'input' => 'string',
             'with_seconds' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -1998,12 +1998,12 @@ public function testTime()
 
     public function testTimeWithSeconds()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', [
             'input' => 'string',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -2029,12 +2029,12 @@ public function testTimeWithSeconds()
 
     public function testTimeText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', [
             'input' => 'string',
             'widget' => 'text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./input
@@ -2059,12 +2059,12 @@ public function testTimeText()
 
     public function testTimeSingleText()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', '04:05:06', [
             'input' => 'string',
             'widget' => 'single_text',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="time"]
     [@name="name"]
@@ -2076,13 +2076,13 @@ public function testTimeSingleText()
 
     public function testTimeWithPlaceholderGlobal()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', null, [
             'input' => 'string',
             'placeholder' => 'Change&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -2101,13 +2101,13 @@ public function testTimeWithPlaceholderGlobal()
 
     public function testTimeWithPlaceholderOnYear()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimeType', null, [
             'input' => 'string',
             'required' => false,
-            'placeholder' => array('hour' => 'Change&Me'),
-        ));
+            'placeholder' => ['hour' => 'Change&Me'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./select
@@ -2140,7 +2140,7 @@ public function testTimezone()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimezoneType', 'Europe/Vienna');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [@name="name"]
     [not(@required)]
@@ -2156,12 +2156,12 @@ public function testTimezone()
 
     public function testTimezoneWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimezoneType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TimezoneType', null, [
             'placeholder' => 'Select&Timezone',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/select
     [./option[@value=""][not(@selected)][not(@disabled)][.="[trans]Select&Timezone[/trans]"]]
     [count(./optgroup)>10]
@@ -2175,7 +2175,7 @@ public function testUrl()
         $url = 'http://www.google.com?foo1=bar1&foo2=bar2';
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\UrlType', $url);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input
     [@type="url"]
     [@name="name"]
@@ -2186,8 +2186,8 @@ public function testUrl()
 
     public function testCollectionPrototype()
     {
-        $form = $this->factory->createNamedBuilder('name', 'Symfony\Component\Form\Extension\Core\Type\FormType', array('items' => array('one', 'two', 'three')))
-            ->add('items', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', array('allow_add' => true))
+        $form = $this->factory->createNamedBuilder('name', 'Symfony\Component\Form\Extension\Core\Type\FormType', ['items' => ['one', 'two', 'three']])
+            ->add('items', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', ['allow_add' => true])
             ->getForm()
             ->createView();
 
@@ -2216,7 +2216,7 @@ public function testButton()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ButtonType');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/button[@type="button"][@name="name"][.="[trans]Name[/trans]"]'
         );
     }
@@ -2230,11 +2230,11 @@ public function testButtonLabelIsEmpty()
 
     public function testButtonlabelWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, [
             'translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/button[@type="button"][@name="name"][.="Name"]'
         );
     }
@@ -2243,7 +2243,7 @@ public function testSubmit()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\SubmitType');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/button[@type="submit"][@name="name"]'
         );
     }
@@ -2252,17 +2252,17 @@ public function testReset()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ResetType');
 
-        $this->assertWidgetMatchesXpath($form->createView(), array()
10000
,
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/button[@type="reset"][@name="name"]'
         );
     }
 
     public function testStartTag()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -2271,10 +2271,10 @@ public function testStartTag()
 
     public function testStartTagForPutRequest()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'put',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -2288,25 +2288,25 @@ public function testStartTagForPutRequest()
 
     public function testStartTagWithOverriddenVars()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'put',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
-        $html = $this->renderStart($form->createView(), array(
+        $html = $this->renderStart($form->createView(), [
             'method' => 'post',
             'action' => 'http://foo.com/directory',
-        ));
+        ]);
 
         $this->assertSame('<form name="form" method="post" action="http://foo.com/directory">', $html);
     }
 
     public function testStartTagForMultipartForm()
     {
-        $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'method' => 'get',
                 'action' => 'http://example.com/directory',
-            ))
+            ])
             ->add('file', 'Symfony\Component\Form\Extension\Core\Type\FileType')
             ->getForm();
 
@@ -2317,25 +2317,25 @@ public function testStartTagForMultipartForm()
 
     public function testStartTagWithExtraAttributes()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => 'http://example.com/directory',
-        ));
+        ]);
 
-        $html = $this->renderStart($form->createView(), array(
-            'attr' => array('class' => 'foobar'),
-        ));
+        $html = $this->renderStart($form->createView(), [
+            'attr' => ['class' => 'foobar'],
+        ]);
 
         $this->assertSame('<form name="form" method="get" action="http://example.com/directory" class="foobar">', $html);
     }
 
     public function testWidgetAttributes()
     {
-        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', array(
+        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', [
             'required' => true,
             'disabled' => true,
-            'attr' => array('readonly' => true, 'maxlength' => 10, 'pattern' => '\d+', 'class' => 'foobar', 'data-foo' => 'bar'),
-        ));
+            'attr' => ['readonly' => true, 'maxlength' => 10, 'pattern' => '\d+', 'class' => 'foobar', 'data-foo' => 'bar'],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2345,9 +2345,9 @@ public function testWidgetAttributes()
 
     public function testWidgetAttributeNameRepeatedIfTrue()
     {
-        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', array(
-            'attr' => array('foo' => true),
-        ));
+        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', [
+            'attr' => ['foo' => true],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2357,9 +2357,9 @@ public function testWidgetAttributeNameRepeatedIfTrue()
 
     public function testWidgetAttributeHiddenIfFalse()
     {
-        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', array(
-            'attr' => array('foo' => false),
-        ));
+        $form = $this->factory->createNamed('text', 'Symfony\Component\Form\Extension\Core\Type\TextType', 'value', [
+            'attr' => ['foo' => false],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2368,10 +2368,10 @@ public function testWidgetAttributeHiddenIfFalse()
 
     public function testButtonAttributes()
     {
-        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, array(
+        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, [
             'disabled' => true,
-            'attr' => array('class' => 'foobar', 'data-foo' => 'bar'),
-        ));
+            'attr' => ['class' => 'foobar', 'data-foo' => 'bar'],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2381,9 +2381,9 @@ public function testButtonAttributes()
 
     public function testButtonAttributeNameRepeatedIfTrue()
     {
-        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, array(
-            'attr' => array('foo' => true),
-        ));
+        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, [
+            'attr' => ['foo' => true],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2393,9 +2393,9 @@ public function testButtonAttributeNameRepeatedIfTrue()
 
     public function testButtonAttributeHiddenIfFalse()
     {
-        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, array(
-            'attr' => array('foo' => false),
-        ));
+        $form = $this->factory->createNamed('button', 'Symfony\Component\Form\Extension\Core\Type\ButtonType', null, [
+            'attr' => ['foo' => false],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2413,7 +2413,7 @@ public function testTextareaWithWhitespaceOnlyContentRetainsValue()
 
     public function testTextareaWithWhitespaceOnlyContentRetainsValueWhenRenderingForm()
     {
-        $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', array('textarea' => '  '))
+        $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', ['textarea' => '  '])
             ->add('textarea', 'Symfony\Component\Form\Extension\Core\Type\TextareaType')
             ->getForm();
 
@@ -2424,9 +2424,9 @@ public function testTextareaWithWhitespaceOnlyContentRetainsValueWhenRenderingFo
 
     public function testWidgetContainerAttributeHiddenIfFalse()
     {
-        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
-            'attr' => array('foo' => false),
-        ));
+        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
+            'attr' => ['foo' => false],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -2437,8 +2437,8 @@ public function testWidgetContainerAttributeHiddenIfFalse()
     public function testTranslatedAttributes()
     {
         $view = $this->factory->createNamedBuilder('name', 'Symfony\Component\Form\Extension\Core\Type\FormType')
-            ->add('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', array('attr' => array('title' => 'Foo')))
-            ->add('lastName', 'Symfony\Component\Form\Extension\Core\Type\TextType', array('attr' => array('placeholder' => 'Bar')))
+            ->add('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', ['attr' => ['title' => 'Foo']])
+            ->add('lastName', 'Symfony\Component\Form\Extension\Core\Type\TextType', ['attr' => ['placeholder' => 'Bar']])
             ->getForm()
             ->createView();
 
@@ -2450,11 +2450,11 @@ public function testTranslatedAttributes()
 
     public function testAttributesNotTranslatedWhenTranslationDomainIsFalse()
     {
-        $view = $this->factory->createNamedBuilder('name', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $view = $this->factory->createNamedBuilder('name', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'translation_domain' => false,
-            ))
-            ->add('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', array('attr' => array('title' => 'Foo')))
-            ->add('lastName', 'Symfony\Component\Form\Extension\Core\Type\TextType', array('attr' => array('placeholder' => 'Bar')))
+            ])
+            ->add('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', ['attr' => ['title' => 'Foo']])
+            ->add('lastName', 'Symfony\Component\Form\Extension\Core\Type\TextType', ['attr' => ['placeholder' => 'Bar']])
             ->getForm()
             ->createView();
 
@@ -2469,7 +2469,7 @@ public function testTel()
         $tel = '0102030405';
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TelType', $tel);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/input
     [@type="tel"]
     [@name="name"]
@@ -2483,7 +2483,7 @@ public function testColor()
         $color = '#0000ff';
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\ColorType', $color);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/input
     [@type="color"]
     [@name="name"]
diff --git a/src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php b/src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php
index 7bc1a65219b9..2c3de1184b63 100644
--- a/src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php
@@ -38,7 +38,7 @@ abstract class AbstractRequestHandlerTest extends TestCase
 
     protected function setUp()
     {
-        $this->serverParams = $this->getMockBuilder('Symfony\Component\Form\Util\ServerParams')->setMethods(array('getNormalizedIniPostMaxSize', 'getContentLength'))->getMock();
+        $this->serverParams = $this->getMockBuilder('Symfony\Component\Form\Util\ServerParams')->setMethods(['getNormalizedIniPostMaxSize', 'getContentLength'])->getMock();
         $this->requestHandler = $this->getRequestHandler();
         $this->factory = Forms::createFormFactoryBuilder()->getFormFactory();
         $this->request = null;
@@ -46,19 +46,19 @@ protected function setUp()
 
     public function methodExceptGetProvider()
     {
-        return array(
-            array('POST'),
-            array('PUT'),
-            array('DELETE'),
-            array('PATCH'),
-        );
+        return [
+            ['POST'],
+            ['PUT'],
+            ['DELETE'],
+            ['PATCH'],
+        ];
     }
 
     public function methodProvider()
     {
-        return array_merge(array(
-            array('GET'),
-        ), $this->methodExceptGetProvider());
+        return array_merge([
+            ['GET'],
+        ], $this->methodExceptGetProvider());
     }
 
     /**
@@ -68,9 +68,9 @@ public function testSubmitIfNameInRequest($method)
     {
         $form = $this->getMockForm('param1', $method);
 
-        $this->setRequestData($method, array(
+        $this->setRequestData($method, [
             'param1' => 'DATA',
-        ));
+        ]);
 
         $form->expects($this->once())
             ->method('submit')
@@ -88,9 +88,9 @@ public function testDoNotSubmitIfWrongRequestMethod($method)
 
         $otherMethod = 'POST' === $method ? 'PUT' : 'POST';
 
-        $this->setRequestData($otherMethod, array(
+        $this->setRequestData($otherMethod, [
             'param1' => 'DATA',
-        ));
+        ]);
 
         $form->expects($this->never())
             ->method('submit');
@@ -105,9 +105,9 @@ public function testDoNoSubmitSimpleFormIfNameNotInRequestAndNotGetRequest($meth
     {
         $form = $this->getMockForm('param1', $method, false);
 
-        $this->setRequestData($method, array(
-            'paramx' => array(),
-        ));
+        $this->setRequestData($method, [
+            'paramx' => [],
+        ]);
 
         $form->expects($this->never())
             ->method('submit');
@@ -122,9 +122,9 @@ public function testDoNotSubmitCompoundFormIfNameNotInRequestAndNotGetRequest($m
     {
         $form = $this->getMockForm('param1', $method, true);
 
-        $this->setRequestData($method, array(
-            'paramx' => array(),
-        ));
+        $this->setRequestData($method, [
+            'paramx' => [],
+        ]);
 
         $form->expects($this->never())
             ->method('submit');
@@ -136,9 +136,9 @@ public function testDoNotSubmitIfNameNotInRequestAndGetRequest()
     {
         $form = $this->getMockForm('param1', 'GET');
 
-        $this->setRequestData('GET', array(
-            'paramx' => array(),
-        ));
+        $this->setRequestData('GET', [
+            'paramx' => [],
+        ]);
 
         $form->expects($this->never())
             ->method('submit');
@@ -154,15 +154,15 @@ public function testSubmitFormWithEmptyNameIfAtLeastOneFieldInRequest($method)
         $form = $this->getMockForm('', $method);
         $form->expects($this->any())
             ->method('all')
-            ->will($this->returnValue(array(
+            ->will($this->returnValue([
                 'param1' => $this->getMockForm('param1'),
                 'param2' => $this->getMockForm('param2'),
-            )));
+            ]));
 
-        $this->setRequestData($method, $requestData = array(
+        $this->setRequestData($method, $requestData = [
             'param1' => 'submitted value',
             'paramx' => 'submitted value',
-        ));
+        ]);
 
         $form->expects($this->once())
             ->method('submit')
@@ -179,14 +179,14 @@ public function testDoNotSubmitFormWithEmptyNameIfNoFieldInRequest($method)
         $form = $this->getMockForm('', $method);
         $form->expects($this->any())
             ->method('all')
-            ->will($this->returnValue(array(
+            ->will($this->returnValue([
                 'param1' => $this->getMockForm('param1'),
                 'param2' => $this->getMockForm('param2'),
-            )));
+            ]));
 
-        $this->setRequestData($method, array(
+        $this->setRequestData($method, [
             'paramx' => 'submitted value',
-        ));
+        ]);
 
         $form->expects($this->never())
             ->method('submit');
@@ -202,22 +202,22 @@ public function testMergeParamsAndFiles($method)
         $form = $this->getMockForm('param1', $method);
         $file = $this->getMockFile();
 
-        $this->setRequestData($method, array(
-            'param1' => array(
+        $this->setRequestData($method, [
+            'param1' => [
                 'field1' => 'DATA',
-            ),
-        ), array(
-            'param1' => array(
+            ],
+        ], [
+            'param1' => [
                 'field2' => $file,
-            ),
-        ));
+            ],
+        ]);
 
         $form->expects($this->once())
             ->method('submit')
-            ->with(array(
+            ->with([
                 'field1' => 'DATA',
                 'field2' => $file,
-            ), 'PATCH' !== $method);
+            ], 'PATCH' !== $method);
 
         $this->requestHandler->handleRequest($form, $this->request);
     }
@@ -230,11 +230,11 @@ public function testParamTakesPrecedenceOverFile($method)
         $form = $this->getMockForm('param1', $method);
         $file = $this->getMockFile();
 
-        $this->setRequestData($method, array(
+        $this->setRequestData($method, [
             'param1' => 'DATA',
-        ), array(
+        ], [
             'param1' => $file,
-        ));
+        ]);
 
         $form->expects($this->once())
             ->method('submit')
@@ -251,11 +251,11 @@ public function testSubmitFileIfNoParam($method)
         $form = $this->getMockForm('param1', $method);
         $file = $this->getMockFile();
 
-        $this->setRequestData($method, array(
+        $this->setRequestData($method, [
             'param1' => null,
-        ), array(
+        ], [
             'param1' => $file,
-        ));
+        ]);
 
         $form->expects($this->once())
             ->method('submit')
@@ -272,13 +272,13 @@ public function testSubmitMultipleFiles($method)
         $form = $this->getMockForm('param1', $method);
         $file = $this->getMockFile();
 
-        $this->setRequestData($method, array(
+        $this->setRequestData($method, [
             'param1' => null,
-        ), array(
+        ], [
             'param2' => $this->getMockFile('2'),
             'param1' => $file,
             'param3' => $this->getMockFile('3'),
-        ));
+        ]);
 
         $form->expects($this->once())
              ->method('submit')
@@ -295,11 +295,11 @@ public function testSubmitFileWithNamelessForm($method)
         $form = $this->getMockForm(null, $method);
         $file = $this->getMockFile();
 
-        $this->setRequestData($method, array(
+        $this->setRequestData($method, [
             '' => null,
-        ), array(
+        ], [
             '' => $file,
-        ));
+        ]);
 
         $form->expects($this->once())
              ->method('submit')
@@ -311,7 +311,7 @@ public function testSubmitFileWithNamelessForm($method)
     /**
      * @dataProvider getPostMaxSizeFixtures
      */
-    public function testAddFormErrorIfPostMaxSizeExceeded($contentLength, $iniMax, $shouldFail, array $errorParams = array())
+    public function testAddFormErrorIfPostMaxSizeExceeded($contentLength, $iniMax, $shouldFail, array $errorParams = [])
     {
         $this->serverParams->expects($this->once())
             ->method('getContentLength')
@@ -320,9 +320,9 @@ public function testAddFormErrorIfPostMaxSizeExceeded($contentLength, $iniMax, $
             ->method('getNormalizedIniPostMaxSize')
             ->will($this->returnValue($iniMax));
 
-        $options = array('post_max_size_message' => 'Max {{ max }}!');
+        $options = ['post_max_size_message' => 'Max {{ max }}!'];
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, $options);
-        $this->setRequestData('POST', array(), array());
+        $this->setRequestData('POST', [], []);
 
         $this->requestHandler->handleRequest($form, $this->request);
 
@@ -330,7 +330,7 @@ public function testAddFormErrorIfPostMaxSizeExceeded($contentLength, $iniMax, $
             $error = new FormError($options['post_max_size_message'], null, $errorParams);
             $error->setOrigin($form);
 
-            $this->assertEquals(array($error), iterator_to_array($form->getErrors()));
+            $this->assertEquals([$error], iterator_to_array($form->getErrors()));
             $this->assertTrue($form->isSubmitted());
         } else {
             $this->assertCount(0, $form->getErrors());
@@ -340,17 +340,17 @@ public function testAddFormErrorIfPostMaxSizeExceeded($contentLength, $iniMax, $
 
     public function getPostMaxSizeFixtures()
     {
-        return array(
-            array(pow(1024, 3) + 1, '1G', true, array('{{ max }}' => '1G')),
-            array(pow(1024, 3), '1G', false),
-            array(pow(1024, 2) + 1, '1M', true, array('{{ max }}' => '1M')),
-            array(pow(1024, 2), '1M', false),
-            array(1024 + 1, '1K', true, array('{{ max }}' => '1K')),
-            array(1024, '1K', false),
-            array(null, '1K', false),
-            array(1024, '', false),
-            array(1024, 0, false),
-        );
+        return [
+            [pow(1024, 3) + 1, '1G', true, ['{{ max }}' => '1G']],
+            [pow(1024, 3), '1G', false],
+            [pow(1024, 2) + 1, '1M', true, ['{{ max }}' => '1M']],
+            [pow(1024, 2), '1M', false],
+            [1024 + 1, '1K', true, ['{{ max }}' => '1K']],
+            [1024, '1K', false],
+            [null, '1K', false],
+            [1024, '', false],
+            [1024, 0, false],
+        ];
     }
 
     public function testUploadedFilesAreAccepted()
@@ -363,7 +363,7 @@ public function testInvalidFilesAreRejected()
         $this->assertFalse($this->requestHandler->isFileUpload($this->getInvalidFile()));
     }
 
-    abstract protected function setRequestData($method, $data, $files = array());
+    abstract protected function setRequestData($method, $data, $files = []);
 
     abstract protected function getRequestHandler();
 
diff --git a/src/Symfony/Component/Form/Tests/AbstractTableLayoutTest.php b/src/Symfony/Component/Form/Tests/AbstractTableLayoutTest.php
index 9902a6dc089f..1873a58f0d07 100644
--- a/src/Symfony/Component/Form/Tests/AbstractTableLayoutTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractTableLayoutTest.php
@@ -42,9 +42,9 @@ public function testRow()
 
     public function testLabelIsNotRenderedWhenSetToFalse()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'label' => false,
-        ));
+        ]);
         $html = $this->renderRow($form->createView());
 
         $this->assertMatchesXpath($html,
@@ -194,11 +194,11 @@ public function testRest()
 
     public function testCollection()
     {
-        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', array('a', 'b'), array(
+        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', ['a', 'b'], [
             'entry_type' => 'Symfony\Component\Form\Extension\Core\Type\TextType',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/table
     [
         ./tr[./td/input[@type="text"][@value="a"]]
@@ -212,11 +212,11 @@ public function testCollection()
 
     public function testEmptyCollection()
     {
-        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', array(), array(
+        $form = $this->factory->createNamed('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', [], [
             'entry_type' => 'Symfony\Component\Form\Extension\Core\Type\TextType',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/table
     [./tr[@style="display: none"][./td[@colspan="2"]/input[@type="hidden"][@id="names__token"]]]
     [count(./tr[./td/input])=1]
@@ -234,10 +234,10 @@ public function testForm()
             ->getForm()
             ->createView();
 
-        $html = $this->renderForm($view, array(
+        $html = $this->renderForm($view, [
             'id' => 'my&id',
-            'attr' => array('class' => 'my&class'),
-        ));
+            'attr' => ['class' => 'my&class'],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/form
@@ -284,7 +284,7 @@ public function testFormWidget()
             ->getForm()
             ->createView();
 
-        $this->assertWidgetMatchesXpath($view, array(),
+        $this->assertWidgetMatchesXpath($view, [],
 '/table
     [
         ./tr
@@ -317,14 +317,14 @@ public function testNestedFormError()
     {
         $form = $this->factory->createNamedBuilder('name', 'Symfony\Component\Form\Extension\Core\Type\FormType')
             ->add($this->factory
-                ->createNamedBuilder('child', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array('error_bubbling' => false))
+                ->createNamedBuilder('child', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, ['error_bubbling' => false])
                 ->add('grandChild', 'Symfony\Component\Form\Extension\Core\Type\FormType')
             )
             ->getForm();
 
         $form->get('child')->addError(new FormError('[trans]Error![/trans]'));
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/table
     [
         ./tr/td/ul[./li[.="[trans]Error![/trans]"]]
@@ -349,7 +349,7 @@ public function testCsrf()
             )
             ->getForm();
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/table
     [
         ./tr[@style="display: none"]
@@ -365,11 +365,11 @@ public function testCsrf()
 
     public function testRepeated()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RepeatedType', 'foobar', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RepeatedType', 'foobar', [
             'type' => 'Symfony\Component\Form\Extension\Core\Type\TextType',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/table
     [
         ./tr
@@ -399,13 +399,13 @@ public function testRepeated()
 
     public function testRepeatedWithCustomOptions()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RepeatedType', 'foobar', array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\RepeatedType', 'foobar', [
             'type' => 'Symfony\Component\Form\Extension\Core\Type\PasswordType',
-            'first_options' => array('label' => 'Test', 'required' => false),
-            'second_options' => array('label' => 'Test2'),
-        ));
+            'first_options' => ['label' => 'Test', 'required' => false],
+            'second_options' => ['label' => 'Test2'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/table
     [
         ./tr
@@ -439,11 +439,11 @@ public function testRepeatedWithCustomOptions()
      */
     public function testCollectionRowWithCustomBlock()
     {
-        $collection = array('one', 'two', 'three');
+        $collection = ['one', 'two', 'three'];
         $form = $this->factory->createNamedBuilder('names', 'Symfony\Component\Form\Extension\Core\Type\CollectionType', $collection)
             ->getForm();
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/table
     [
         ./tr[./td/label[.="Custom label: [trans]0[/trans]"]]
@@ -503,16 +503,16 @@ public function testFormEndWithoutRest()
         $this->renderWidget($view['field1']);
 
         // Rest should only contain field2, but isn't rendered
-        $html = $this->renderEnd($view, array('render_rest' => false));
+        $html = $this->renderEnd($view, ['render_rest' => false]);
 
         $this->assertEquals('</form>', $html);
     }
 
     public function testWidgetContainerAttributes()
     {
-        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
-            'attr' => array('class' => 'foobar', 'data-foo' => 'bar'),
-        ));
+        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
+            'attr' => ['class' => 'foobar', 'data-foo' => 'bar'],
+        ]);
 
         $form->add('text', 'Symfony\Component\Form\Extension\Core\Type\TextType');
 
@@ -524,9 +524,9 @@ public function testWidgetContainerAttributes()
 
     public function testWidgetContainerAttributeNameRepeatedIfTrue()
     {
-        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
-            'attr' => array('foo' => true),
-        ));
+        $form = $this->factory->createNamed('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
+            'attr' => ['foo' => true],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
diff --git a/src/Symfony/Component/Form/Tests/ButtonBuilderTest.php b/src/Symfony/Component/Form/Tests/ButtonBuilderTest.php
index 014a5ae179b1..ced54a4588b5 100644
--- a/src/Symfony/Component/Form/Tests/ButtonBuilderTest.php
+++ b/src/Symfony/Component/Form/Tests/ButtonBuilderTest.php
@@ -22,14 +22,14 @@ class ButtonBuilderTest extends TestCase
 {
     public function getValidNames()
     {
-        return array(
-            array('reset'),
-            array('submit'),
-            array('foo'),
-            array('0'),
-            array(0),
-            array('button[]'),
-        );
+        return [
+            ['reset'],
+            ['submit'],
+            ['foo'],
+            ['0'],
+            [0],
+            ['button[]'],
+        ];
     }
 
     /**
@@ -42,11 +42,11 @@ public function testValidNames($name)
 
     public function getInvalidNames()
     {
-        return array(
-            array(''),
-            array(false),
-            array(null),
-        );
+        return [
+            [''],
+            [false],
+            [null],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/ButtonTest.php b/src/Symfony/Component/Form/Tests/ButtonTest.php
index a81c2db5511c..6115640242bc 100644
--- a/src/Symfony/Component/Form/Tests/ButtonTest.php
+++ b/src/Symfony/Component/Form/Tests/ButtonTest.php
@@ -66,13 +66,13 @@ public function testDisabledIfParentIsDisabled($parentDisabled, $buttonDisabled,
 
     public function getDisabledStates()
     {
-        return array(
+        return [
             // parent, button, result
-            array(true, true, true),
-            array(true, false, true),
-            array(false, true, true),
-            array(false, false, false),
-        );
+            [true, true, true],
+            [true, false, true],
+            [false, true, true],
+            [false, false, false],
+        ];
     }
 
     private function getButtonBuilder($name)
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/AbstractChoiceListTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/AbstractChoiceListTest.php
index fc25cffc1fc2..aca967daba16 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/AbstractChoiceListTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/AbstractChoiceListTest.php
@@ -154,66 +154,66 @@ public function testGetOriginalKeys()
 
     public function testGetChoicesForValues()
     {
-        $values = array($this->value1, $this->value2);
-        $this->assertSame(array($this->choice1, $this->choice2), $this->list->getChoicesForValues($values));
+        $values = [$this->value1, $this->value2];
+        $this->assertSame([$this->choice1, $this->choice2], $this->list->getChoicesForValues($values));
     }
 
     public function testGetChoicesForValuesPreservesKeys()
     {
-        $values = array(5 => $this->value1, 8 => $this->value2);
-        $this->assertSame(array(5 => $this->choice1, 8 => $this->choice2), $this->list->getChoicesForValues($values));
+        $values = [5 => $this->value1, 8 => $this->value2];
+        $this->assertSame([5 => $this->choice1, 8 => $this->choice2], $this->list->getChoicesForValues($values));
     }
 
     public function testGetChoicesForValuesPreservesOrder()
     {
-        $values = array($this->value2, $this->value1);
-        $this->assertSame(array($this->choice2, $this->choice1), $this->list->getChoicesForValues($values));
+        $values = [$this->value2, $this->value1];
+        $this->assertSame([$this->choice2, $this->choice1], $this->list->getChoicesForValues($values));
     }
 
     public function testGetChoicesForValuesIgnoresNonExistingValues()
     {
-        $values = array($this->value1, $this->value2, 'foobar');
-        $this->assertSame(array($this->choice1, $this->choice2), $this->list->getChoicesForValues($values));
+        $values = [$this->value1, $this->value2, 'foobar'];
+        $this->assertSame([$this->choice1, $this->choice2], $this->list->getChoicesForValues($values));
     }
 
     // https://github.com/symfony/symfony/issues/3446
     public function testGetChoicesForValuesEmpty()
     {
-        $this->assertSame(array(), $this->list->getChoicesForValues(array()));
+        $this->assertSame([], $this->list->getChoicesForValues([]));
     }
 
     public function testGetValuesForChoices()
     {
-        $choices = array($this->choice1, $this->choice2);
-        $this->assertSame(array($this->value1, $this->value2), $this->list->getValuesForChoices($choices));
+        $choices = [$this->choice1, $this->choice2];
+        $this->assertSame([$this->value1, $this->value2], $this->list->getValuesForChoices($choices));
     }
 
     public function testGetValuesForChoicesPreservesKeys()
     {
-        $choices = array(5 => $this->choice1, 8 => $this->choice2);
-        $this->assertSame(array(5 => $this->value1, 8 => $this->value2), $this->list->getValuesForChoices($choices));
+        $choices = [5 => $this->choice1, 8 => $this->choice2];
+        $this->assertSame([5 => $this->value1, 8 => $this->value2], $this->list->getValuesForChoices($choices));
     }
 
     public function testGetValuesForChoicesPreservesOrder()
     {
-        $choices = array($this->choice2, $this->choice1);
-        $this->assertSame(array($this->value2, $this->value1), $this->list->getValuesForChoices($choices));
+        $choices = [$this->choice2, $this->choice1];
+        $this->assertSame([$this->value2, $this->value1], $this->list->getValuesForChoices($choices));
     }
 
     public function testGetValuesForChoicesIgnoresNonExistingChoices()
     {
-        $choices = array($this->choice1, $this->choice2, 'foobar');
-        $this->assertSame(array($this->value1, $this->value2), $this->list->getValuesForChoices($choices));
+        $choices = [$this->choice1, $this->choice2, 'foobar'];
+        $this->assertSame([$this->value1, $this->value2], $this->list->getValuesForChoices($choices));
     }
 
     public function testGetValuesForChoicesEmpty()
     {
-        $this->assertSame(array(), $this->list->getValuesForChoices(array()));
+        $this->assertSame([], $this->list->getValuesForChoices([]));
     }
 
     public function testGetChoicesForValuesWithNull()
     {
-        $values = $this->list->getValuesForChoices(array(null));
+        $values = $this->list->getValuesForChoices([null]);
 
         $this->assertNotEmpty($this->list->getChoicesForValues($values));
     }
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/ArrayChoiceListTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/ArrayChoiceListTest.php
index 37b8dddbbe47..c71fd75bcf7f 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/ArrayChoiceListTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/ArrayChoiceListTest.php
@@ -34,12 +34,12 @@ protected function createChoiceList()
 
     protected function getChoices()
     {
-        return array(0, 1, 1.5, '1', 'a', false, true, $this->object, null);
+        return [0, 1, 1.5, '1', 'a', false, true, $this->object, null];
     }
 
     protected function getValues()
     {
-        return array('0', '1', '2', '3', '4', '5', '6', '7', '8');
+        return ['0', '1', '2', '3', '4', '5', '6', '7', '8'];
     }
 
     public function testCreateChoiceListWithValueCallback()
@@ -48,65 +48,65 @@ public function testCreateChoiceListWithValueCallback()
             return ':'.$choice;
         };
 
-        $choiceList = new ArrayChoiceList(array(2 => 'foo', 7 => 'bar', 10 => 'baz'), $callback);
+        $choiceList = new ArrayChoiceList([2 => 'foo', 7 => 'bar', 10 => 'baz'], $callback);
 
-        $this->assertSame(array(':foo', ':bar', ':baz'), $choiceList->getValues());
-        $this->assertSame(array(':foo' => 'foo', ':bar' => 'bar', ':baz' => 'baz'), $choiceList->getChoices());
-        $this->assertSame(array(':foo' => 2, ':bar' => 7, ':baz' => 10), $choiceList->getOriginalKeys());
-        $this->assertSame(array(1 => 'foo', 2 => 'baz'), $choiceList->getChoicesForValues(array(1 => ':foo', 2 => ':baz')));
-        $this->assertSame(array(1 => ':foo', 2 => ':baz'), $choiceList->getValuesForChoices(array(1 => 'foo', 2 => 'baz')));
+        $this->assertSame([':foo', ':bar', ':baz'], $choiceList->getValues());
+        $this->assertSame([':foo' => 'foo', ':bar' => 'bar', ':baz' => 'baz'], $choiceList->getChoices());
+        $this->assertSame([':foo' => 2, ':bar' => 7, ':baz' => 10], $choiceList->getOriginalKeys());
+        $this->assertSame([1 => 'foo', 2 => 'baz'], $choiceList->getChoicesForValues([1 => ':foo', 2 => ':baz']));
+        $this->assertSame([1 => ':foo', 2 => ':baz'], $choiceList->getValuesForChoices([1 => 'foo', 2 => 'baz']));
     }
 
     public function testCreateChoiceListWithoutValueCallbackAndDuplicateFreeToStringChoices()
     {
-        $choiceList = new ArrayChoiceList(array(2 => 'foo', 7 => 'bar', 10 => 123));
+        $choiceList = new ArrayChoiceList([2 => 'foo', 7 => 'bar', 10 => 123]);
 
-        $this->assertSame(array('foo', 'bar', '123'), $choiceList->getValues());
-        $this->assertSame(array('foo' => 'foo', 'bar' => 'bar', '123' => 123), $choiceList->getChoices());
-        $this->assertSame(array('foo' => 2, 'bar' => 7, '123' => 10), $choiceList->getOriginalKeys());
-        $this->assertSame(array(1 => 'foo', 2 => 123), $choiceList->getChoicesForValues(array(1 => 'foo', 2 => '123')));
-        $this->assertSame(array(1 => 'foo', 2 => '123'), $choiceList->getValuesForChoices(array(1 => 'foo', 2 => 123)));
+        $this->assertSame(['foo', 'bar', '123'], $choiceList->getValues());
+        $this->assertSame(['foo' => 'foo', 'bar' => 'bar', '123' => 123], $choiceList->getChoices());
+        $this->assertSame(['foo' => 2, 'bar' => 7, '123' => 10], $choiceList->getOriginalKeys());
+        $this->assertSame([1 => 'foo', 2 => 123], $choiceList->getChoicesForValues([1 => 'foo', 2 => '123']));
+        $this->assertSame([1 => 'foo', 2 => '123'], $choiceList->getValuesForChoices([1 => 'foo', 2 => 123]));
     }
 
     public function testCreateChoiceListWithoutValueCallbackAndToStringDuplicates()
     {
-        $choiceList = new ArrayChoiceList(array(2 => 'foo', 7 => '123', 10 => 123));
+        $choiceList = new ArrayChoiceList([2 => 'foo', 7 => '123', 10 => 123]);
 
-        $this->assertSame(array('0', '1', '2'), $choiceList->getValues());
-        $this->assertSame(array('0' => 'foo', '1' => '123', '2' => 123), $choiceList->getChoices());
-        $this->assertSame(array('0' => 2, '1' => 7, '2' => 10), $choiceList->getOriginalKeys());
-        $this->assertSame(array(1 => 'foo', 2 => 123), $choiceList->getChoicesForValues(array(1 => '0', 2 => '2')));
-        $this->assertSame(array(1 => '0', 2 => '2'), $choiceList->getValuesForChoices(array(1 => 'foo', 2 => 123)));
+        $this->assertSame(['0', '1', '2'], $choiceList->getValues());
+        $this->assertSame(['0' => 'foo', '1' => '123', '2' => 123], $choiceList->getChoices());
+        $this->assertSame(['0' => 2, '1' => 7, '2' => 10], $choiceList->getOriginalKeys());
+        $this->assertSame([1 => 'foo', 2 => 123], $choiceList->getChoicesForValues([1 => '0', 2 => '2']));
+        $this->assertSame([1 => '0', 2 => '2'], $choiceList->getValuesForChoices([1 => 'foo', 2 => 123]));
     }
 
     public function testCreateChoiceListWithoutValueCallbackAndMixedChoices()
     {
         $object = new \stdClass();
-        $choiceList = new ArrayChoiceList(array(2 => 'foo', 5 => array(7 => '123'), 10 => $object));
+        $choiceList = new ArrayChoiceList([2 => 'foo', 5 => [7 => '123'], 10 => $object]);
 
-        $this->assertSame(array('0', '1', '2'), $choiceList->getValues());
-        $this->assertSame(array('0' => 'foo', '1' => '123', '2' => $object), $choiceList->getChoices());
-        $this->assertSame(array('0' => 2, '1' => 7, '2' => 10), $choiceList->getOriginalKeys());
-        $this->assertSame(array(1 => 'foo', 2 => $object), $choiceList->getChoicesForValues(array(1 => '0', 2 => '2')));
-        $this->assertSame(array(1 => '0', 2 => '2'), $choiceList->getValuesForChoices(array(1 => 'foo', 2 => $object)));
+        $this->assertSame(['0', '1', '2'], $choiceList->getValues());
+        $this->assertSame(['0' => 'foo', '1' => '123', '2' => $object], $choiceList->getChoices());
+        $this->assertSame(['0' => 2, '1' => 7, '2' => 10], $choiceList->getOriginalKeys());
+        $this->assertSame([1 => 'foo', 2 => $object], $choiceList->getChoicesForValues([1 => '0', 2 => '2']));
+        $this->assertSame([1 => '0', 2 => '2'], $choiceList->getValuesForChoices([1 => 'foo', 2 => $object]));
     }
 
     public function testCreateChoiceListWithGroupedChoices()
     {
-        $choiceList = new ArrayChoiceList(array(
-            'Group 1' => array('A' => 'a', 'B' => 'b'),
-            'Group 2' => array('C' => 'c', 'D' => 'd'),
-        ));
-
-        $this->assertSame(array('a', 'b', 'c', 'd'), $choiceList->getValues());
-        $this->assertSame(array(
-            'Group 1' => array('A' => 'a', 'B' => 'b'),
-            'Group 2' => array('C' => 'c', 'D' => 'd'),
-        ), $choiceList->getStructuredValues());
-        $this->assertSame(array('a' => 'a', 'b' => 'b', 'c' => 'c', 'd' => 'd'), $choiceList->getChoices());
-        $this->assertSame(array('a' => 'A', 'b' => 'B', 'c' => 'C', 'd' => 'D'), $choiceList->getOriginalKeys());
-        $this->assertSame(array(1 => 'a', 2 => 'b'), $choiceList->getChoicesForValues(array(1 => 'a', 2 => 'b')));
-        $this->assertSame(array(1 => 'a', 2 => 'b'), $choiceList->getValuesForChoices(array(1 => 'a', 2 => 'b')));
+        $choiceList = new ArrayChoiceList([
+            'Group 1' => ['A' => 'a', 'B' => 'b'],
+            'Group 2' => ['C' => 'c', 'D' => 'd'],
+        ]);
+
+        $this->assertSame(['a', 'b', 'c', 'd'], $choiceList->getValues());
+        $this->assertSame([
+            'Group 1' => ['A' => 'a', 'B' => 'b'],
+            'Group 2' => ['C' => 'c', 'D' => 'd'],
+        ], $choiceList->getStructuredValues());
+        $this->assertSame(['a' => 'a', 'b' => 'b', 'c' => 'c', 'd' => 'd'], $choiceList->getChoices());
+        $this->assertSame(['a' => 'A', 'b' => 'B', 'c' => 'C', 'd' => 'D'], $choiceList->getOriginalKeys());
+        $this->assertSame([1 => 'a', 2 => 'b'], $choiceList->getChoicesForValues([1 => 'a', 2 => 'b']));
+        $this->assertSame([1 => 'a', 2 => 'b'], $choiceList->getValuesForChoices([1 => 'a', 2 => 'b']));
     }
 
     public function testCompareChoicesByIdentityByDefault()
@@ -115,52 +115,52 @@ public function testCompareChoicesByIdentityByDefault()
             return $choice->value;
         };
 
-        $obj1 = (object) array('value' => 'value1');
-        $obj2 = (object) array('value' => 'value2');
+        $obj1 = (object) ['value' => 'value1'];
+        $obj2 = (object) ['value' => 'value2'];
 
-        $choiceList = new ArrayChoiceList(array($obj1, $obj2), $callback);
-        $this->assertSame(array(2 => 'value2'), $choiceList->getValuesForChoices(array(2 => $obj2)));
-        $this->assertSame(array(2 => 'value2'), $choiceList->getValuesForChoices(array(2 => (object) array('value' => 'value2'))));
+        $choiceList = new ArrayChoiceList([$obj1, $obj2], $callback);
+        $this->assertSame([2 => 'value2'], $choiceList->getValuesForChoices([2 => $obj2]));
+        $this->assertSame([2 => 'value2'], $choiceList->getValuesForChoices([2 => (object) ['value' => 'value2']]));
     }
 
     public function testGetChoicesForValuesWithContainingNull()
     {
-        $choiceList = new ArrayChoiceList(array('Null' => null));
+        $choiceList = new ArrayChoiceList(['Null' => null]);
 
-        $this->assertSame(array(0 => null), $choiceList->getChoicesForValues(array('0')));
+        $this->assertSame([0 => null], $choiceList->getChoicesForValues(['0']));
     }
 
     public function testGetChoicesForValuesWithContainingFalseAndNull()
     {
-        $choiceList = new ArrayChoiceList(array('False' => false, 'Null' => null));
+        $choiceList = new ArrayChoiceList(['False' => false, 'Null' => null]);
 
-        $this->assertSame(array(0 => null), $choiceList->getChoicesForValues(array('1')));
-        $this->assertSame(array(0 => false), $choiceList->getChoicesForValues(array('0')));
+        $this->assertSame([0 => null], $choiceList->getChoicesForValues(['1']));
+        $this->assertSame([0 => false], $choiceList->getChoicesForValues(['0']));
     }
 
     public function testGetChoicesForValuesWithContainingEmptyStringAndNull()
     {
-        $choiceList = new ArrayChoiceList(array('Empty String' => '', 'Null' => null));
+        $choiceList = new ArrayChoiceList(['Empty String' => '', 'Null' => null]);
 
-        $this->assertSame(array(0 => ''), $choiceList->getChoicesForValues(array('0')));
-        $this->assertSame(array(0 => null), $choiceList->getChoicesForValues(array('1')));
+        $this->assertSame([0 => ''], $choiceList->getChoicesForValues(['0']));
+        $this->assertSame([0 => null], $choiceList->getChoicesForValues(['1']));
     }
 
     public function testGetChoicesForValuesWithContainingEmptyStringAndBooleans()
     {
-        $choiceList = new ArrayChoiceList(array('Empty String' => '', 'True' => true, 'False' => false));
+        $choiceList = new ArrayChoiceList(['Empty String' => '', 'True' => true, 'False' => false]);
 
-        $this->assertSame(array(0 => ''), $choiceList->getChoicesForValues(array('')));
-        $this->assertSame(array(0 => true), $choiceList->getChoicesForValues(array('1')));
-        $this->assertSame(array(0 => false), $choiceList->getChoicesForValues(array('0')));
+        $this->assertSame([0 => ''], $choiceList->getChoicesForValues(['']));
+        $this->assertSame([0 => true], $choiceList->getChoicesForValues(['1']));
+        $this->assertSame([0 => false], $choiceList->getChoicesForValues(['0']));
     }
 
     public function testGetChoicesForValuesWithContainingEmptyStringAndFloats()
     {
-        $choiceList = new ArrayChoiceList(array('Empty String' => '', '1/3' => 0.3, '1/2' => 0.5));
+        $choiceList = new ArrayChoiceList(['Empty String' => '', '1/3' => 0.3, '1/2' => 0.5]);
 
-        $this->assertSame(array(0 => ''), $choiceList->getChoicesForValues(array('')));
-        $this->assertSame(array(0 => 0.3), $choiceList->getChoicesForValues(array('0.3')));
-        $this->assertSame(array(0 => 0.5), $choiceList->getChoicesForValues(array('0.5')));
+        $this->assertSame([0 => ''], $choiceList->getChoicesForValues(['']));
+        $this->assertSame([0 => 0.3], $choiceList->getChoicesForValues(['0.3']));
+        $this->assertSame([0 => 0.5], $choiceList->getChoicesForValues(['0.5']));
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/Factory/CachingFactoryDecoratorTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/Factory/CachingFactoryDecoratorTest.php
index c0d34c1bfd51..ca5b67c817f2 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/Factory/CachingFactoryDecoratorTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/Factory/CachingFactoryDecoratorTest.php
@@ -41,18 +41,18 @@ public function testCreateFromChoicesEmpty()
 
         $this->decoratedFactory->expects($this->once())
             ->method('createListFromChoices')
-            ->with(array())
+            ->with([])
             ->will($this->returnValue($list));
 
-        $this->assertSame($list, $this->factory->createListFromChoices(array()));
-        $this->assertSame($list, $this->factory->createListFromChoices(array()));
+        $this->assertSame($list, $this->factory->createListFromChoices([]));
+        $this->assertSame($list, $this->factory->createListFromChoices([]));
     }
 
     public function testCreateFromChoicesComparesTraversableChoicesAsArray()
     {
         // The top-most traversable is converted to an array
-        $choices1 = new \ArrayIterator(array('A' => 'a'));
-        $choices2 = array('A' => 'a');
+        $choices1 = new \ArrayIterator(['A' => 'a']);
+        $choices2 = ['A' => 'a'];
         $list = new \stdClass();
 
         $this->decoratedFactory->expects($this->once())
@@ -66,8 +66,8 @@ public function testCreateFromChoicesComparesTraversableChoicesAsArray()
 
     public function testCreateFromChoicesGroupedChoices()
     {
-        $choices1 = array('key' => array('A' => 'a'));
-        $choices2 = array('A' => 'a');
+        $choices1 = ['key' => ['A' => 'a']];
+        $choices2 = ['A' => 'a'];
         $list1 = new \stdClass();
         $list2 = new \stdClass();
 
@@ -89,8 +89,8 @@ public function testCreateFromChoicesGroupedChoices()
      */
     public function testCreateFromChoicesSameChoices($choice1, $choice2)
     {
-        $choices1 = array($choice1);
-        $choices2 = array($choice2);
+        $choices1 = [$choice1];
+        $choices2 = [$choice2];
         $list = new \stdClass();
 
         $this->decoratedFactory->expects($this->once())
@@ -107,8 +107,8 @@ public function testCreateFromChoicesSameChoices($choice1, $choice2)
      */
     public function testCreateFromChoicesDifferentChoices($choice1, $choice2)
     {
-        $choices1 = array($choice1);
-        $choices2 = array($choice2);
+        $choices1 = [$choice1];
+        $choices2 = [$choice2];
         $list1 = new \stdClass();
         $list2 = new \stdClass();
 
@@ -127,7 +127,7 @@ public function testCreateFromChoicesDifferentChoices($choice1, $choice2)
 
     public function testCreateFromChoicesSameValueClosure()
     {
-        $choices = array(1);
+        $choices = [1];
         $list = new \stdClass();
         $closure = function () {};
 
@@ -142,7 +142,7 @@ public function testCreateFromChoicesSameValueClosure()
 
     public function testCreateFromChoicesDifferentValueClosure()
     {
-        $choices = array(1);
+        $choices = [1];
         $list1 = new \stdClass();
         $list2 = new \stdClass();
         $closure1 = function () {};
@@ -233,7 +233,7 @@ public function testCreateFromLoaderDifferentValueClosure()
 
     public function testCreateViewSamePreferredChoices()
     {
-        $preferred = array('a');
+        $preferred = ['a'];
         $list = $this->getMockBuilder('Symfony\Component\Form\ChoiceList\ChoiceListInterface')->getMock();
         $view = new \stdClass();
 
@@ -248,8 +248,8 @@ public function testCreateViewSamePreferredChoices()
 
     public function testCreateViewDifferentPreferredChoices()
     {
-        $preferred1 = array('a');
-        $preferred2 = array('b');
+        $preferred1 = ['a'];
+        $preferred2 = ['b'];
         $list = $this->getMockBuilder('Symfony\Component\Form\ChoiceList\ChoiceListInterface')->getMock();
         $view1 = new \stdClass();
         $view2 = new \stdClass();
@@ -413,7 +413,7 @@ public function testCreateViewDifferentGroupByClosure()
 
     public function testCreateViewSameAttributes()
     {
-        $attr = array('class' => 'foobar');
+        $attr = ['class' => 'foobar'];
         $list = $this->getMockBuilder('Symfony\Component\Form\ChoiceList\ChoiceListInterface')->getMock();
         $view = new \stdClass();
 
@@ -428,8 +428,8 @@ public function testCreateViewSameAttributes()
 
     public function testCreateViewDifferentAttributes()
     {
-        $attr1 = array('class' => 'foobar1');
-        $attr2 = array('class' => 'foobar2');
+        $attr1 = ['class' => 'foobar1'];
+        $attr2 = ['class' => 'foobar2'];
         $list = $this->getMockBuilder('Symfony\Component\Form\ChoiceList\ChoiceListInterface')->getMock();
         $view1 = new \stdClass();
         $view2 = new \stdClass();
@@ -485,53 +485,53 @@ public function testCreateViewDifferentAttributesClosure()
 
     public function provideSameChoices()
     {
-        $object = (object) array('foo' => 'bar');
+        $object = (object) ['foo' => 'bar'];
 
-        return array(
-            array(0, 0),
-            array('a', 'a'),
+        return [
+            [0, 0],
+            ['a', 'a'],
             // https://github.com/symfony/symfony/issues/10409
-            array(\chr(181).'meter', \chr(181).'meter'), // UTF-8
-            array($object, $object),
-        );
+            [\chr(181).'meter', \chr(181).'meter'], // UTF-8
+            [$object, $object],
+        ];
     }
 
     public function provideDistinguishedChoices()
     {
-        return array(
-            array(0, false),
-            array(0, null),
-            array(0, '0'),
-            array(0, ''),
-            array(1, true),
-            array(1, '1'),
-            array(1, 'a'),
-            array('', false),
-            array('', null),
-            array(false, null),
+        return [
+            [0, false],
+            [0, null],
+            [0, '0'],
+            [0, ''],
+            [1, true],
+            [1, '1'],
+            [1, 'a'],
+            ['', false],
+            ['', null],
+            [false, null],
             // Same properties, but not identical
-            array((object) array('foo' => 'bar'), (object) array('foo' => 'bar')),
-        );
+            [(object) ['foo' => 'bar'], (object) ['foo' => 'bar']],
+        ];
     }
 
     public function provideSameKeyChoices()
     {
         // Only test types here that can be used as array keys
-        return array(
-            array(0, 0),
-            array(0, '0'),
-            array('a', 'a'),
-            array(\chr(181).'meter', \chr(181).'meter'),
-        );
+        return [
+            [0, 0],
+            [0, '0'],
+            ['a', 'a'],
+            [\chr(181).'meter', \chr(181).'meter'],
+        ];
     }
 
     public function provideDistinguishedKeyChoices()
     {
         // Only test types here that can be used as array keys
-        return array(
-            array(0, ''),
-            array(1, 'a'),
-            array('', 'a'),
-        );
+        return [
+            [0, ''],
+            [1, 'a'],
+            ['', 'a'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/Factory/DefaultChoiceListFactoryTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/Factory/DefaultChoiceListFactoryTest.php
index 983fdd27287a..c520ab1a0de7 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/Factory/DefaultChoiceListFactoryTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/Factory/DefaultChoiceListFactoryTest.php
@@ -86,28 +86,28 @@ public function getGroupAsObject($object)
 
     protected function setUp()
     {
-        $this->obj1 = (object) array('label' => 'A', 'index' => 'w', 'value' => 'a', 'preferred' => false, 'group' => 'Group 1', 'attr' => array());
-        $this->obj2 = (object) array('label' => 'B', 'index' => 'x', 'value' => 'b', 'preferred' => true, 'group' => 'Group 1', 'attr' => array('attr1' => 'value1'));
-        $this->obj3 = (object) array('label' => 'C', 'index' => 'y', 'value' => 1, 'preferred' => true, 'group' => 'Group 2', 'attr' => array('attr2' => 'value2'));
-        $this->obj4 = (object) array('label' => 'D', 'index' => 'z', 'value' => 2, 'preferred' => false, 'group' => 'Group 2', 'attr' => array());
+        $this->obj1 = (object) ['label' => 'A', 'index' => 'w', 'value' => 'a', 'preferred' => false, 'group' => 'Group 1', 'attr' => []];
+        $this->obj2 = (object) ['label' => 'B', 'index' => 'x', 'value' => 'b', 'preferred' => true, 'group' => 'Group 1', 'attr' => ['attr1' => 'value1']];
+        $this->obj3 = (object) ['label' => 'C', 'index' => 'y', 'value' => 1, 'preferred' => true, 'group' => 'Group 2', 'attr' => ['attr2' => 'value2']];
+        $this->obj4 = (object) ['label' => 'D', 'index' => 'z', 'value' => 2, 'preferred' => false, 'group' => 'Group 2', 'attr' => []];
         $this->list = new ArrayChoiceList(
-            array('A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4)
+            ['A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4]
         );
         $this->factory = new DefaultChoiceListFactory();
     }
 
     public function testCreateFromChoicesEmpty()
     {
-        $list = $this->factory->createListFromChoices(array());
+        $list = $this->factory->createListFromChoices([]);
 
-        $this->assertSame(array(), $list->getChoices());
-        $this->assertSame(array(), $list->getValues());
+        $this->assertSame([], $list->getChoices());
+        $this->assertSame([], $list->getValues());
     }
 
     public function testCreateFromChoicesFlat()
     {
         $list = $this->factory->createListFromChoices(
-            array('A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4)
+            ['A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4]
         );
 
         $this->assertObjectListWithGeneratedValues($list);
@@ -116,7 +116,7 @@ public function testCreateFromChoicesFlat()
     public function testCreateFromChoicesFlatTraversable()
     {
         $list = $this->factory->createListFromChoices(
-            new \ArrayIterator(array('A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4))
+            new \ArrayIterator(['A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4])
         );
 
         $this->assertObjectListWithGeneratedValues($list);
@@ -125,8 +125,8 @@ public function testCreateFromChoicesFlatTraversable()
     public function testCreateFromChoicesFlatValuesAsCallable()
     {
         $list = $this->factory->createListFromChoices(
-            array('A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4),
-            array($this, 'getValue')
+            ['A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4],
+            [$this, 'getValue']
         );
 
         $this->assertObjectListWithCustomValues($list);
@@ -135,7 +135,7 @@ public function testCreateFromChoicesFlatValuesAsCallable()
     public function testCreateFromChoicesFlatValuesAsClosure()
     {
         $list = $this->factory->createListFromChoices(
-            array('A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4),
+            ['A' => $this->obj1, 'B' => $this->obj2, 'C' => $this->obj3, 'D' => $this->obj4],
             function ($object) { return $object->value; }
         );
 
@@ -145,10 +145,10 @@ function ($object) { return $object->value; }
     public function testCreateFromChoicesGrouped()
     {
         $list = $this->factory->createListFromChoices(
-            array(
-                'Group 1' => array('A' => $this->obj1, 'B' => $this->obj2),
-                'Group 2' => array('C' => $this->obj3, 'D' => $this->obj4),
-            )
+            [
+                'Group 1' => ['A' => $this->obj1, 'B' => $this->obj2],
+                'Group 2' => ['C' => $this->obj3, 'D' => $this->obj4],
+            ]
         );
 
         $this->assertObjectListWithGeneratedValues($list);
@@ -157,10 +157,10 @@ public function testCreateFromChoicesGrouped()
     public function testCreateFromChoicesGroupedTraversable()
     {
         $list = $this->factory->createListFromChoices(
-            new \ArrayIterator(array(
-                    'Group 1' => array('A' => $this->obj1, 'B' => $this->obj2),
-                    'Group 2' => array('C' => $this->obj3, 'D' => $this->obj4),
-                ))
+            new \ArrayIterator([
+                    'Group 1' => ['A' => $this->obj1, 'B' => $this->obj2],
+                    'Group 2' => ['C' => $this->obj3, 'D' => $this->obj4],
+                ])
         );
 
         $this->assertObjectListWithGeneratedValues($list);
@@ -169,11 +169,11 @@ public function testCreateFromChoicesGroupedTraversable()
     public function testCreateFromChoicesGroupedValuesAsCallable()
     {
         $list = $this->factory->createListFromChoices(
-            array(
-                'Group 1' => array('A' => $this->obj1, 'B' => $this->obj2),
-                'Group 2' => array('C' => $this->obj3, 'D' => $this->obj4),
-            ),
-            array($this, 'getValue')
+            [
+                'Group 1' => ['A' => $this->obj1, 'B' => $this->obj2],
+                'Group 2' => ['C' => $this->obj3, 'D' => $this->obj4],
+            ],
+            [$this, 'getValue']
         );
 
         $this->assertObjectListWithCustomValues($list);
@@ -182,10 +182,10 @@ public function testCreateFromChoicesGroupedValuesAsCallable()
     public function testCreateFromChoicesGroupedValuesAsClosure()
     {
         $list = $this->factory->createListFromChoices(
-            array(
-                'Group 1' => array('A' => $this->obj1, 'B' => $this->obj2),
-                'Group 2' => array('C' => $this->obj3, 'D' => $this->obj4),
-            ),
+            [
+                'Group 1' => ['A' => $this->obj1, 'B' => $this->obj2],
+                'Group 2' => ['C' => $this->obj3, 'D' => $this->obj4],
+            ],
             function ($object) { return $object->value; }
         );
 
@@ -216,12 +216,12 @@ public function testCreateViewFlat()
         $view = $this->factory->createView($this->list);
 
         $this->assertEquals(new ChoiceListView(
-                array(
+                [
                     0 => new ChoiceView($this->obj1, '0', 'A'),
                     1 => new ChoiceView($this->obj2, '1', 'B'),
                     2 => new ChoiceView($this->obj3, '2', 'C'),
                     3 => new ChoiceView($this->obj4, '3', 'D'),
-                ), array()
+                ], []
         ), $view);
     }
 
@@ -229,7 +229,7 @@ public function testCreateViewFlatPreferredChoices()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3)
+            [$this->obj2, $this->obj3]
         );
 
         $this->assertFlatView($view);
@@ -239,16 +239,16 @@ public function testCreateViewFlatPreferredChoicesEmptyArray()
     {
         $view = $this->factory->createView(
             $this->list,
-            array()
+            []
         );
 
         $this->assertEquals(new ChoiceListView(
-                array(
+                [
                     0 => new ChoiceView($this->obj1, '0', 'A'),
                     1 => new ChoiceView($this->obj2, '1', 'B'),
                     2 => new ChoiceView($this->obj3, '2', 'C'),
                     3 => new ChoiceView($this->obj4, '3', 'D'),
-                ), array()
+                ], []
         ), $view);
     }
 
@@ -256,7 +256,7 @@ public function testCreateViewFlatPreferredChoicesAsCallable()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this, 'isPreferred')
+            [$this, 'isPreferred']
         );
 
         $this->assertFlatView($view);
@@ -305,8 +305,8 @@ public function testCreateViewFlatLabelAsCallable()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
-            array($this, 'getLabel')
+            [$this->obj2, $this->obj3],
+            [$this, 'getLabel']
         );
 
         $this->assertFlatView($view);
@@ -316,7 +316,7 @@ public function testCreateViewFlatLabelAsClosure()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             function ($object) {
                 return $object->label;
             }
@@ -329,7 +329,7 @@ public function testCreateViewFlatLabelClosureReceivesKey()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             function ($object, $key) {
                 return $key;
             }
@@ -342,7 +342,7 @@ public function testCreateViewFlatLabelClosureReceivesValue()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3]
10000
,
             function ($object, $key, $value) {
                 switch ($value) {
                     case '0': return 'A';
@@ -360,9 +360,9 @@ public function testCreateViewFlatIndexAsCallable()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
-            array($this, 'getFormIndex')
+            [$this, 'getFormIndex']
         );
 
         $this->assertFlatViewWithCustomIndices($view);
@@ -372,7 +372,7 @@ public function testCreateViewFlatIndexAsClosure()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             function ($object) {
                 return $object->index;
@@ -386,7 +386,7 @@ public function testCreateViewFlatIndexClosureReceivesKey()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             function ($object, $key) {
                 switch ($key) {
@@ -405,7 +405,7 @@ public function testCreateViewFlatIndexClosureReceivesValue()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             function ($object, $key, $value) {
                 switch ($value) {
@@ -422,15 +422,15 @@ function ($object, $key, $value) {
 
     public function testCreateViewFlatGroupByOriginalStructure()
     {
-        $list = new ArrayChoiceList(array(
-            'Group 1' => array('A' => $this->obj1, 'B' => $this->obj2),
-            'Group 2' => array('C' => $this->obj3, 'D' => $this->obj4),
-            'Group empty' => array(),
-        ));
+        $list = new ArrayChoiceList([
+            'Group 1' => ['A' => $this->obj1, 'B' => $this->obj2],
+            'Group 2' => ['C' => $this->obj3, 'D' => $this->obj4],
+            'Group empty' => [],
+        ]);
 
         $view = $this->factory->createView(
             $list,
-            array($this->obj2, $this->obj3)
+            [$this->obj2, $this->obj3]
         );
 
         $this->assertGroupedView($view);
@@ -440,7 +440,7 @@ public function testCreateViewFlatGroupByEmpty()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             null  // group
@@ -453,10 +453,10 @@ public function testCreateViewFlatGroupByAsCallable()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
-            array($this, 'getGroup')
+            [$this, 'getGroup']
         );
 
         $this->assertGroupedView($view);
@@ -466,10 +466,10 @@ public function testCreateViewFlatGroupByObjectThatCanBeCastToString()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
-            array($this, 'getGroupAsObject')
+            [$this, 'getGroupAsObject']
         );
 
         $this->assertGroupedView($view);
@@ -482,7 +482,7 @@ public function testCreateViewFlatGroupByAsClosure()
 
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             function ($object) use ($obj1, $obj2) {
@@ -497,7 +497,7 @@ public function testCreateViewFlatGroupByClosureReceivesKey()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             function ($object, $key) {
@@ -512,7 +512,7 @@ public function testCreateViewFlatGroupByClosureReceivesValue()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             function ($object, $key, $value) {
@@ -527,14 +527,14 @@ public function testCreateViewFlatAttrAsArray()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             null, // group
-            array(
-                'B' => array('attr1' => 'value1'),
-                'C' => array('attr2' => 'value2'),
-            )
+            [
+                'B' => ['attr1' => 'value1'],
+                'C' => ['attr2' => 'value2'],
+            ]
         );
 
         $this->assertFlatViewWithAttr($view);
@@ -544,11 +544,11 @@ public function testCreateViewFlatAttrEmpty()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             null, // group
-            array()
+            []
         );
 
         $this->assertFlatView($view);
@@ -558,11 +558,11 @@ public function testCreateViewFlatAttrAsCallable()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             null, // group
-            array($this, 'getAttr')
+            [$this, 'getAttr']
         );
 
         $this->assertFlatViewWithAttr($view);
@@ -572,7 +572,7 @@ public function testCreateViewFlatAttrAsClosure()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             null, // group
@@ -588,15 +588,15 @@ public function testCreateViewFlatAttrClosureReceivesKey()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             null, // group
             function ($object, $key) {
                 switch ($key) {
-                    case 'B': return array('attr1' => 'value1');
-                    case 'C': return array('attr2' => 'value2');
-                    default: return array();
+                    case 'B': return ['attr1' => 'value1'];
+                    case 'C': return ['attr2' => 'value2'];
+                    default: return [];
                 }
             }
         );
@@ -608,15 +608,15 @@ public function testCreateViewFlatAttrClosureReceivesValue()
     {
         $view = $this->factory->createView(
             $this->list,
-            array($this->obj2, $this->obj3),
+            [$this->obj2, $this->obj3],
             null, // label
             null, // index
             null, // group
             function ($object, $key, $value) {
                 switch ($value) {
-                    case '1': return array('attr1' => 'value1');
-                    case '2': return array('attr2' => 'value2');
-                    default: return array();
+                    case '1': return ['attr1' => 'value1'];
+                    case '2': return ['attr2' => 'value2'];
+                    default: return [];
                 }
             }
         );
@@ -626,151 +626,151 @@ function ($object, $key, $value) {
 
     private function assertScalarListWithChoiceValues(ChoiceListInterface $list)
     {
-        $this->assertSame(array('a', 'b', 'c', 'd'), $list->getValues());
+        $this->assertSame(['a', 'b', 'c', 'd'], $list->getValues());
 
-        $this->assertSame(array(
+        $this->assertSame([
             'a' => 'a',
             'b' => 'b',
             'c' => 'c',
             'd' => 'd',
-        ), $list->getChoices());
+        ], $list->getChoices());
 
-        $this->assertSame(array(
+        $this->assertSame([
             'a' => 'A',
             'b' => 'B',
             'c' => 'C',
             'd' => 'D',
-        ), $list->getOriginalKeys());
+        ], $list->getOriginalKeys());
     }
 
     private function assertObjectListWithGeneratedValues(ChoiceListInterface $list)
     {
-        $this->assertSame(array('0', '1', '2', '3'), $list->getValues());
+        $this->assertSame(['0', '1', '2', '3'], $list->getValues());
 
-        $this->assertSame(array(
+        $this->assertSame([
             0 => $this->obj1,
             1 => $this->obj2,
             2 => $this->obj3,
             3 => $this->obj4,
-        ), $list->getChoices());
+        ], $list->getChoices());
 
-        $this->assertSame(array(
+        $this->assertSame([
             0 => 'A',
             1 => 'B',
             2 => 'C',
             3 => 'D',
-        ), $list->getOriginalKeys());
+        ], $list->getOriginalKeys());
     }
 
     private function assertScalarListWithCustomValues(ChoiceListInterface $list)
     {
-        $this->assertSame(array('a', 'b', '1', '2'), $list->getValues());
+        $this->assertSame(['a', 'b', '1', '2'], $list->getValues());
 
-        $this->assertSame(array(
+        $this->assertSame([
             'a' => 'a',
             'b' => 'b',
             1 => 'c',
             2 => 'd',
-        ), $list->getChoices());
+        ], $list->getChoices());
 
-        $this->assertSame(array(
+        $this->assertSame([
             'a' => 'A',
             'b' => 'B',
             1 => 'C',
             2 => 'D',
-        ), $list->getOriginalKeys());
+        ], $list->getOriginalKeys());
     }
 
     private function assertObjectListWithCustomValues(ChoiceListInterface $list)
     {
-        $this->assertSame(array('a', 'b', '1', '2'), $list->getValues());
+        $this->assertSame(['a', 'b', '1', '2'], $list->getValues());
 
-        $this->assertSame(array(
+        $this->assertSame([
             'a' => $this->obj1,
             'b' => $this->obj2,
             1 => $this->obj3,
             2 => $this->obj4,
-        ), $list->getChoices());
+        ], $list->getChoices());
 
-        $this->assertSame(array(
+        $this->assertSame([
             'a' => 'A',
             'b' => 'B',
             1 => 'C',
             2 => 'D',
-        ), $list->getOriginalKeys());
+        ], $list->getOriginalKeys());
     }
 
     private function assertFlatView($view)
     {
         $this->assertEquals(new ChoiceListView(
-                array(
+                [
                     0 => new ChoiceView($this->obj1, '0', 'A'),
                     3 => new ChoiceView($this->obj4, '3', 'D'),
-                ), array(
+                ], [
                     1 => new ChoiceView($this->obj2, '1', 'B'),
                     2 => new ChoiceView($this->obj3, '2', 'C'),
-                )
+                ]
         ), $view);
     }
 
     private function assertFlatViewWithCustomIndices($view)
     {
         $this->assertEquals(new ChoiceListView(
-                array(
+                [
                     'w' => new ChoiceView($this->obj1, '0', 'A'),
                     'z' => new ChoiceView($this->obj4, '3', 'D'),
-                ), array(
+                ], [
                     'x' => new ChoiceView($this->obj2, '1', 'B'),
                     'y' => new ChoiceView($this->obj3, '2', 'C'),
-                )
+                ]
         ), $view);
     }
 
     private function assertFlatViewWithAttr($view)
     {
         $this->assertEquals(new ChoiceListView(
-                array(
+                [
                     0 => new ChoiceView($this->obj1, '0', 'A'),
                     3 => new ChoiceView($this->obj4, '3', 'D'),
-                ), array(
+                ], [
                     1 => new ChoiceView(
                         $this->obj2,
                         '1',
                         'B',
-                        array('attr1' => 'value1')
+                        ['attr1' => 'value1']
                     ),
                     2 => new ChoiceView(
                         $this->obj3,
                         '2',
                         'C',
-                        array('attr2' => 'value2')
+                        ['attr2' => 'value2']
                     ),
-                )
+                ]
         ), $view);
     }
 
     private function assertGroupedView($view)
     {
         $this->assertEquals(new ChoiceListView(
-                array(
+                [
                     'Group 1' => new ChoiceGroupView(
                         'Group 1',
-                        array(0 => new ChoiceView($this->obj1, '0', 'A'))
+                        [0 => new ChoiceView($this->obj1, '0', 'A')]
                     ),
                     'Group 2' => new ChoiceGroupView(
                         'Group 2',
-                        array(3 => new ChoiceView($this->obj4, '3', 'D'))
+                        [3 => new ChoiceView($this->obj4, '3', 'D')]
                     ),
-                ), array(
+                ], [
                     'Group 1' => new ChoiceGroupView(
                         'Group 1',
-                        array(1 => new ChoiceView($this->obj2, '1', 'B'))
+                        [1 => new ChoiceView($this->obj2, '1', 'B')]
                     ),
                     'Group 2' => new ChoiceGroupView(
                         'Group 2',
-                        array(2 => new ChoiceView($this->obj3, '2', 'C'))
+                        [2 => new ChoiceView($this->obj3, '2', 'C')]
                     ),
-                )
+                ]
         ), $view);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/Factory/PropertyAccessDecoratorTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/Factory/PropertyAccessDecoratorTest.php
index d100dcff4a5f..1b943e81c1ec 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/Factory/PropertyAccessDecoratorTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/Factory/PropertyAccessDecoratorTest.php
@@ -38,7 +38,7 @@ protected function setUp()
 
     public function testCreateFromChoicesPropertyPath()
     {
-        $choices = array((object) array('property' => 'value'));
+        $choices = [(object) ['property' => 'value']];
 
         $this->decoratedFactory->expects($this->once())
             ->method('createListFromChoices')
@@ -47,12 +47,12 @@ public function testCreateFromChoicesPropertyPath()
                 return array_map($callback, $choices);
             }));
 
-        $this->assertSame(array('value'), $this->factory->createListFromChoices($choices, 'property'));
+        $this->assertSame(['value'], $this->factory->createListFromChoices($choices, 'property'));
     }
 
     public function testCreateFromChoicesPropertyPathInstance()
     {
-        $choices = array((object) array('property' => 'value'));
+        $choices = [(object) ['property' => 'value']];
 
         $this->decoratedFactory->expects($this->once())
             ->method('createListFromChoices')
@@ -61,7 +61,7 @@ public function testCreateFromChoicesPropertyPathInstance()
                 return array_map($callback, $choices);
             }));
 
-        $this->assertSame(array('value'), $this->factory->createListFromChoices($choices, new PropertyPath('property')));
+        $this->assertSame(['value'], $this->factory->createListFromChoices($choices, new PropertyPath('property')));
     }
 
     /**
@@ -69,7 +69,7 @@ public function testCreateFromChoicesPropertyPathInstance()
      */
     public function testCreateFromChoicesPropertyPathWithCallableString()
     {
-        $choices = array('foo' => 'bar');
+        $choices = ['foo' => 'bar'];
 
         $this->decoratedFactory->expects($this->once())
             ->method('createListFromChoices')
@@ -87,7 +87,7 @@ public function testCreateFromLoaderPropertyPath()
             ->method('createListFromLoader')
             ->with($loader, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($loader, $callback) {
-                return $callback((object) array('property' => 'value'));
+                return $callback((object) ['property' => 'value']);
             }));
 
         $this->assertSame('value', $this->factory->createListFromLoader($loader, 'property'));
@@ -111,7 +111,7 @@ public function testCreateFromLoaderPropertyPathWithCallableString()
     // https://github.com/symfony/symfony/issues/5494
     public function testCreateFromChoicesAssumeNullIfValuePropertyPathUnreadable()
     {
-        $choices = array(null);
+        $choices = [null];
 
         $this->decoratedFactory->expects($this->once())
             ->method('createListFromChoices')
@@ -120,7 +120,7 @@ public function testCreateFromChoicesAssumeNullIfValuePropertyPathUnreadable()
                 return array_map($callback, $choices);
             }));
 
-        $this->assertSame(array(null), $this->factory->createListFromChoices($choices, 'property'));
+        $this->assertSame([null], $this->factory->createListFromChoices($choices, 'property'));
     }
 
     // https://github.com/symfony/symfony/issues/5494
@@ -146,7 +146,7 @@ public function testCreateFromLoaderPropertyPathInstance()
             ->method('createListFromLoader')
             ->with($loader, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($loader, $callback) {
-                return $callback((object) array('property' => 'value'));
+                return $callback((object) ['property' => 'value']);
             }));
 
         $this->assertSame('value', $this->factory->createListFromLoader($loader, new PropertyPath('property')));
@@ -160,7 +160,7 @@ public function testCreateViewPreferredChoicesAsPropertyPath()
             ->method('createView')
             ->with($list, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred) {
-                return $preferred((object) array('property' => true));
+                return $preferred((object) ['property' => true]);
             }));
 
         $this->assertTrue($this->factory->createView(
@@ -195,7 +195,7 @@ public function testCreateViewPreferredChoicesAsPropertyPathInstance()
             ->method('createView')
             ->with($list, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred) {
-                return $preferred((object) array('property' => true));
+                return $preferred((object) ['property' => true]);
             }));
 
         $this->assertTrue($this->factory->createView(
@@ -213,7 +213,7 @@ public function testCreateViewAssumeNullIfPreferredChoicesPropertyPathUnreadable
             ->method('createView')
             ->with($list, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred) {
-                return $preferred((object) array('category' => null));
+                return $preferred((object) ['category' => null]);
             }));
 
         $this->assertFalse($this->factory->createView(
@@ -230,7 +230,7 @@ public function testCreateViewLabelsAsPropertyPath()
             ->method('createView')
             ->with($list, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label) {
-                return $label((object) array('property' => 'label'));
+                return $label((object) ['property' => 'label']);
             }));
 
         $this->assertSame('label', $this->factory->createView(
@@ -267,7 +267,7 @@ public function testCreateViewLabelsAsPropertyPathInstance()
             ->method('createView')
             ->with($list, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label) {
-                return $label((object) array('property' => 'label'));
+                return $label((object) ['property' => 'label']);
             }));
 
         $this->assertSame('label', $this->factory->createView(
@@ -285,7 +285,7 @@ public function testCreateViewIndicesAsPropertyPath()
             ->method('createView')
             ->with($list, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index) {
-                return $index((object) array('property' => 'index'));
+                return $index((object) ['property' => 'index']);
             }));
 
         $this->assertSame('index', $this->factory->createView(
@@ -324,7 +324,7 @@ public function testCreateViewIndicesAsPropertyPathInstance()
             ->method('createView')
             ->with($list, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index) {
-                return $index((object) array('property' => 'index'));
+                return $index((object) ['property' => 'index']);
             }));
 
         $this->assertSame('index', $this->factory->createView(
@@ -343,7 +343,7 @@ public function testCreateViewGroupsAsPropertyPath()
             ->method('createView')
             ->with($list, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy) {
-                return $groupBy((object) array('property' => 'group'));
+                return $groupBy((object) ['property' => 'group']);
             }));
 
         $this->assertSame('group', $this->factory->createView(
@@ -384,7 +384,7 @@ public function testCreateViewGroupsAsPropertyPathInstance()
             ->method('createView')
             ->with($list, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy) {
-                return $groupBy((object) array('property' => 'group'));
+                return $groupBy((object) ['property' => 'group']);
             }));
 
         $this->assertSame('group', $this->factory->createView(
@@ -405,7 +405,7 @@ public function testCreateViewAssumeNullIfGroupsPropertyPathUnreadable()
             ->method('createView')
             ->with($list, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy) {
-                return $groupBy((object) array('group' => null));
+                return $groupBy((object) ['group' => null]);
             }));
 
         $this->assertNull($this->factory->createView(
@@ -425,7 +425,7 @@ public function testCreateViewAttrAsPropertyPath()
             ->method('createView')
             ->with($list, null, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy, $attr) {
-                return $attr((object) array('property' => 'attr'));
+                return $attr((object) ['property' => 'attr']);
             }));
 
         $this->assertSame('attr', $this->factory->createView(
@@ -468,7 +468,7 @@ public function testCreateViewAttrAsPropertyPathInstance()
             ->method('createView')
             ->with($list, null, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy, $attr) {
-                return $attr((object) array('property' => 'attr'));
+                return $attr((object) ['property' => 'attr']);
             }));
 
         $this->assertSame('attr', $this->factory->createView(
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/LazyChoiceListTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/LazyChoiceListTest.php
index 61c8a5aa0b0e..60795c4aae1d 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/LazyChoiceListTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/LazyChoiceListTest.php
@@ -74,7 +74,7 @@ public function testGetChoicesUsesLoadedListWhenLoaderDoesNotCacheChoiceListOnFi
         $this->loader->expects($this->at(1))
             ->method('loadChoiceList')
             ->with($this->value)
-            ->willReturn(new ArrayChoiceList(array('a', 'b')));
+            ->willReturn(new ArrayChoiceList(['a', 'b']));
 
         // The same list is returned by the lazy choice list
         $this->loadedList->expects($this->exactly(2))
@@ -137,11 +137,11 @@ public function testGetChoicesForValuesForwardsCallIfListNotLoaded()
     {
         $this->loader->expects($this->exactly(2))
             ->method('loadChoicesForValues')
-            ->with(array('a', 'b'))
+            ->with(['a', 'b'])
             ->will($this->returnValue('RESULT'));
 
-        $this->assertSame('RESULT', $this->list->getChoicesForValues(array('a', 'b')));
-        $this->assertSame('RESULT', $this->list->getChoicesForValues(array('a', 'b')));
+        $this->assertSame('RESULT', $this->list->getChoicesForValues(['a', 'b']));
+        $this->assertSame('RESULT', $this->list->getChoicesForValues(['a', 'b']));
     }
 
     public function testGetChoicesForValuesUsesLoadedList()
@@ -158,14 +158,14 @@ public function testGetChoicesForValuesUsesLoadedList()
 
         $this->loadedList->expects($this->exactly(2))
             ->method('getChoicesForValues')
-            ->with(array('a', 'b'))
+            ->with(['a', 'b'])
             ->will($this->returnValue('RESULT'));
 
         // load choice list
         $this->list->getChoices();
 
-        $this->assertSame('RESULT', $this->list->getChoicesForValues(array('a', 'b')));
-        $this->assertSame('RESULT', $this->list->getChoicesForValues(array('a', 'b')));
+        $this->assertSame('RESULT', $this->list->getChoicesForValues(['a', 'b']));
+        $this->assertSame('RESULT', $this->list->getChoicesForValues(['a', 'b']));
     }
 
     /**
@@ -175,11 +175,11 @@ public function testGetValuesForChoicesForwardsCallIfListNotLoaded()
     {
         $this->loader->expects($this->exactly(2))
             ->method('loadValuesForChoices')
-            ->with(array('a', 'b'))
+            ->with(['a', 'b'])
             ->will($this->returnValue('RESULT'));
 
-        $this->assertSame('RESULT', $this->list->getValuesForChoices(array('a', 'b')));
-        $this->assertSame('RESULT', $this->list->getValuesForChoices(array('a', 'b')));
+        $this->assertSame('RESULT', $this->list->getValuesForChoices(['a', 'b']));
+        $this->assertSame('RESULT', $this->list->getValuesForChoices(['a', 'b']));
     }
 
     public function testGetValuesForChoicesUsesLoadedList()
@@ -196,13 +196,13 @@ public function testGetValuesForChoicesUsesLoadedList()
 
         $this->loadedList->expects($this->exactly(2))
             ->method('getValuesForChoices')
-            ->with(array('a', 'b'))
+            ->with(['a', 'b'])
             ->will($this->returnValue('RESULT'));
 
         // load choice list
         $this->list->getChoices();
 
-        $this->assertSame('RESULT', $this->list->getValuesForChoices(array('a', 'b')));
-        $this->assertSame('RESULT', $this->list->getValuesForChoices(array('a', 'b')));
+        $this->assertSame('RESULT', $this->list->getValuesForChoices(['a', 'b']));
+        $this->assertSame('RESULT', $this->list->getValuesForChoices(['a', 'b']));
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/Loader/CallbackChoiceLoaderTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/Loader/CallbackChoiceLoaderTest.php
index 7a1a96d1e62a..362783c91e8e 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/Loader/CallbackChoiceLoaderTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/Loader/CallbackChoiceLoaderTest.php
@@ -53,11 +53,11 @@ public static function setUpBeforeClass()
         self::$value = function ($choice) {
             return isset($choice->value) ? $choice->value : null;
         };
-        self::$choices = array(
-            (object) array('value' => 'choice_one'),
-            (object) array('value' => 'choice_two'),
-        );
-        self::$choiceValues = array('choice_one', 'choice_two');
+        self::$choices = [
+            (object) ['value' => 'choice_one'],
+            (object) ['value' => 'choice_two'],
+        ];
+        self::$choiceValues = ['choice_one', 'choice_two'];
         self::$lazyChoiceList = new LazyChoiceList(self::$loader, self::$value);
     }
 
@@ -95,8 +95,8 @@ public static function tearDownAfterClass()
     {
         self::$loader = null;
         self::$value = null;
-        self::$choices = array();
-        self::$choiceValues = array();
+        self::$choices = [];
+        self::$choiceValues = [];
         self::$lazyChoiceList = null;
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php b/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
index f69222c345ed..1e7ce7985379 100644
--- a/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
+++ b/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
@@ -24,7 +24,7 @@ class DebugCommandTest extends TestCase
     public function testDebugDefaults()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array(), array('decorated' => false));
+        $ret = $tester->execute([], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Built-in form types', $tester->getDisplay());
@@ -33,7 +33,7 @@ public function testDebugDefaults()
     public function testDebugSingleFormType()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('class' => 'FormType'), array('decorated' => false));
+        $ret = $tester->execute(['class' => 'FormType'], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Symfony\Component\Form\Extension\Core\Type\FormType (Block prefix: "form")', $tester->getDisplay());
@@ -42,7 +42,7 @@ public function testDebugSingleFormType()
     public function testDebugFormTypeOption()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('class' => 'FormType', 'option' => 'method'), array('decorated' => false));
+        $ret = $tester->execute(['class' => 'FormType', 'option' => 'method'], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Symfony\Component\Form\Extension\Core\Type\FormType (method)', $tester->getDisplay());
@@ -55,7 +55,7 @@ public function testDebugFormTypeOption()
     public function testDebugSingleFormTypeNotFound()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('class' => 'NonExistentType'), array('decorated' => false, 'interactive' => false));
+        $tester->execute(['class' => 'NonExistentType'], ['decorated' => false, 'interactive' => false]);
     }
 
     public function testDebugAmbiguousFormType()
@@ -75,23 +75,23 @@ public function testDebugAmbiguousFormType()
             $this->setExpectedException(InvalidArgumentException::class, $expectedMessage);
         }
 
-        $tester = $this->createCommandTester(array(
+        $tester = $this->createCommandTester([
             'Symfony\Component\Form\Tests\Fixtures\Debug\A',
             'Symfony\Component\Form\Tests\Fixtures\Debug\B',
-        ));
+        ]);
 
-        $tester->execute(array('class' => 'AmbiguousType'), array('decorated' => false, 'interactive' => false));
+        $tester->execute(['class' => 'AmbiguousType'], ['decorated' => false, 'interactive' => false]);
     }
 
     public function testDebugAmbiguousFormTypeInteractive()
     {
-        $tester = $this->createCommandTester(array(
+        $tester = $this->createCommandTester([
             'Symfony\Component\Form\Tests\Fixtures\Debug\A',
             'Symfony\Component\Form\Tests\Fixtures\Debug\B',
-        ));
+        ]);
 
-        $tester->setInputs(array(0));
-        $tester->execute(array('class' => 'AmbiguousType'), array('decorated' => false, 'interactive' => true));
+        $tester->setInputs([0]);
+        $tester->execute(['class' => 'AmbiguousType'], ['decorated' => false, 'interactive' => true]);
 
         $this->assertEquals(0, $tester->getStatusCode(), 'Returns 0 in case of success');
         $output = $tester->getDisplay(true);
@@ -114,12 +114,12 @@ public function testDebugAmbiguousFormTypeInteractive()
      */
     public function testDebugInvalidFormType()
     {
-        $this->createCommandTester()->execute(array('class' => 'test'));
+        $this->createCommandTester()->execute(['class' => 'test']);
     }
 
     private function createCommandTester(array $namespaces = null)
     {
-        $formRegistry = new FormRegistry(array(), new ResolvedFormTypeFactory());
+        $formRegistry = new FormRegistry([], new ResolvedFormTypeFactory());
         $command = null === $namespaces ? new DebugCommand($formRegistry) : new DebugCommand($formRegistry, $namespaces);
         $application = new Application();
         $application->add($command);
diff --git a/src/Symfony/Component/Form/Tests/CompoundFormPerformanceTest.php b/src/Symfony/Component/Form/Tests/CompoundFormPerformanceTest.php
index e5d8e9a9877e..b9c81f1d1ef5 100644
--- a/src/Symfony/Component/Form/Tests/CompoundFormPerformanceTest.php
+++ b/src/Symfony/Component/Form/Tests/CompoundFormPerformanceTest.php
@@ -31,16 +31,16 @@ public function testArrayBasedForm()
             $form = $this->factory->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType')
                 ->add('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType')
                 ->add('lastName', 'Symfony\Component\Form\Extension\Core\Type\TextType')
-                ->add('color', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array(
-                    'choices' => array('red' => 'Red', 'blue' => 'Blue'),
+                ->add('color', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', [
+                    'choices' => ['red' => 'Red', 'blue' => 'Blue'],
                     'required' => false,
-                ))
+                ])
                 ->add('age', 'Symfony\Component\Form\Extension\Core\Type\NumberType')
                 ->add('birthDate', 'Symfony\Component\Form\Extension\Core\Type\BirthdayType')
-                ->add('city', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array(
+                ->add('city', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', [
                     // simulate 300 different cities
                     'choices' => range(1, 300),
-                ))
+                ])
                 ->getForm();
 
             // load the form into a view
diff --git a/src/Symfony/Component/Form/Tests/CompoundFormTest.php b/src/Symfony/Component/Form/Tests/CompoundFormTest.php
index 9b5b893dabda..85c7431bcf70 100644
--- a/src/Symfony/Component/Form/Tests/CompoundFormTest.php
+++ b/src/Symfony/Component/Form/Tests/CompoundFormTest.php
@@ -28,10 +28,10 @@ public function testValidIfAllChildrenAreValid()
         $this->form->add($this->getBuilder('firstName')->getForm());
         $this->form->add($this->getBuilder('lastName')->getForm());
 
-        $this->form->submit(array(
+        $this->form->submit([
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
-        ));
+        ]);
 
         $this->assertTrue($this->form->isValid());
     }
@@ -41,10 +41,10 @@ public function testInvalidIfChildIsInvalid()
         $this->form->add($this->getBuilder('firstName')->getForm());
         $this->form->add($this->getBuilder('lastName')->getForm());
 
-        $this->form->submit(array(
+        $this->form->submit([
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
-        ));
+        ]);
 
         $this->form->get('lastName')->addError(new FormError('Invalid'));
 
@@ -60,7 +60,7 @@ public function testDisabledFormsValidEvenIfChildrenInvalid()
             ->add($this->getBuilder('name'))
             ->getForm();
 
-        $form->submit(array('name' => 'Jacques Doe'));
+        $form->submit(['name' => 'Jacques Doe']);
 
         $form->get('name')->addError(new FormError('Invalid'));
 
@@ -77,7 +77,7 @@ public function testSubmitForwardsNullIfNotClearMissingButValueIsExplicitlyNull(
             ->method('submit')
             ->with($this->equalTo(null));
 
-        $this->form->submit(array('firstName' => null), false);
+        $this->form->submit(['firstName' => null], false);
     }
 
     public function testSubmitForwardsNullIfValueIsMissing()
@@ -90,7 +90,7 @@ public function testSubmitForwardsNullIfValueIsMissing()
             ->method('submit')
             ->with($this->equalTo(null));
 
-        $this->form->submit(array());
+        $this->form->submit([]);
     }
 
     public function testSubmitDoesNotForwardNullIfNotClearMissing()
@@ -102,7 +102,7 @@ public function testSubmitDoesNotForwardNullIfNotClearMissing()
         $child->expects($this->never())
             ->method('submit');
 
-        $this->form->submit(array(), false);
+        $this->form->submit([], false);
     }
 
     public function testSubmitDoesNotAddExtraFieldForNullValues()
@@ -110,10 +110,10 @@ public function testSubmitDoesNotAddExtraFieldForNullValues()
         $factory = Forms::createFormFactoryBuilder()
             ->getFormFactory();
 
-        $child = $factory->createNamed('file', 'Symfony\Component\Form\Extension\Core\Type\FileType', null, array('auto_initialize' => false));
+        $child = $factory->createNamed('file', 'Symfony\Component\Form\Extension\Core\Type\FileType', null, ['auto_initialize' => false]);
 
         $this->form->add($child);
-        $this->form->submit(array('file' => null), false);
+        $this->form->submit(['file' => null], false);
 
         $this->assertCount(0, $this->form->getExtraData());
     }
@@ -128,7 +128,7 @@ public function testClearMissingFlagIsForwarded()
             ->method('submit')
             ->with($this->equalTo('foo'), false);
 
-        $this->form->submit(array('firstName' => 'foo'), false);
+        $this->form->submit(['firstName' => 'foo'], false);
     }
 
     public function testCloneChildren()
@@ -163,7 +163,7 @@ public function testAdd()
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     public function testAddUsingNameAndType()
@@ -172,17 +172,17 @@ public function testAddUsingNameAndType()
 
         $this->factory->expects($this->once())
             ->method('createNamed')
-            ->with('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+            ->with('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
                 'bar' => 'baz',
                 'auto_initialize' => false,
-            ))
+            ])
             ->will($this->returnValue($child));
 
-        $this->form->add('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', array('bar' => 'baz'));
+        $this->form->add('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', ['bar' => 'baz']);
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     public function testAddUsingIntegerNameAndType()
@@ -191,18 +191,18 @@ public function testAddUsingIntegerNameAndType()
 
         $this->factory->expects($this->once())
             ->method('createNamed')
-            ->with('0', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+            ->with('0', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
                 'bar' => 'baz',
                 'auto_initialize' => false,
-            ))
+            ])
             ->will($this->returnValue($child));
 
         // in order to make casting unnecessary
-        $this->form->add(0, 'Symfony\Component\Form\Extension\Core\Type\TextType', array('bar' => 'baz'));
+        $this->form->add(0, 'Symfony\Component\Form\Extension\Core\Type\TextType', ['bar' => 'baz']);
 
         $this->assertTrue($this->form->has(0));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array(0 => $child), $this->form->all());
+        $this->assertSame([0 => $child], $this->form->all());
     }
 
     public function testAddWithoutType()
@@ -218,7 +218,7 @@ public function testAddWithoutType()
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     public function testAddUsingNameButNoType()
@@ -239,7 +239,7 @@ public function testAddUsingNameButNoType()
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     public function testAddUsingNameButNoTypeAndOptions()
@@ -253,17 +253,17 @@ public function testAddUsingNameButNoTypeAndOptions()
 
         $this->factory->expects($this->once())
             ->method('createForProperty')
-            ->with('\stdClass', 'foo', null, array(
+            ->with('\stdClass', 'foo', null, [
                 'bar' => 'baz',
                 'auto_initialize' => false,
-            ))
+            ])
             ->will($this->returnValue($child));
 
-        $this->form->add('foo', null, array('bar' => 'baz'));
+        $this->form->add('foo', null, ['bar' => 'baz']);
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     /**
@@ -271,7 +271,7 @@ public function testAddUsingNameButNoTypeAndOptions()
      */
     public function testAddThrowsExceptionIfAlreadySubmitted()
     {
-        $this->form->submit(array());
+        $this->form->submit([]);
         $this->form->add($this->getBuilder('foo')->getForm());
     }
 
@@ -291,7 +291,7 @@ public function testRemove()
     public function testRemoveThrowsExceptionIfAlreadySubmitted()
     {
         $this->form->add($this->getBuilder('foo')->setCompound(false)->getForm());
-        $this->form->submit(array('foo' => 'bar'));
+        $this->form->submit(['foo' => 'bar']);
         $this->form->remove('foo');
     }
 
@@ -338,10 +338,10 @@ public function testAddMapsViewDataToFormIfInitialized()
         $form = $this->getBuilder()
             ->setCompound(true)
             ->setDataMapper($mapper)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'foo' => 'bar',
-            )))
+            ]))
             ->setData('foo')
             ->getForm();
 
@@ -351,7 +351,7 @@ public function testAddMapsViewDataToFormIfInitialized()
             ->with('bar', $this->isInstanceOf('\RecursiveIteratorIterator'))
             ->will($this->returnCallback(function ($data, \RecursiveIteratorIterator $iterator) use ($child) {
                 $this->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $this->assertSame(array($child->getName() => $child), iterator_to_array($iterator));
+                $this->assertSame([$child->getName() => $child], iterator_to_array($iterator));
             }));
 
         $form->initialize();
@@ -422,7 +422,7 @@ public function testSetDataSupportsDynamicAdditionAndRemovalOfChildren()
             ->method('setData');
 
         // pass NULL to all children
-        $form->setData(array());
+        $form->setData([]);
     }
 
     public function testSetDataMapsViewDataToChildren()
@@ -431,10 +431,10 @@ public function testSetDataMapsViewDataToChildren()
         $form = $this->getBuilder()
             ->setCompound(true)
             ->setDataMapper($mapper)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'foo' => 'bar',
-            )))
+            ]))
             ->getForm();
 
         $form->add($child1 = $this->getBuilder('firstName')->getForm());
@@ -445,7 +445,7 @@ public function testSetDataMapsViewDataToChildren()
             ->with('bar', $this->isInstanceOf('\RecursiveIteratorIterator'))
             ->will($this->returnCallback(function ($data, \RecursiveIteratorIterator $iterator) use ($child1, $child2) {
                 $this->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $this->assertSame(array('firstName' => $child1, 'lastName' => $child2), iterator_to_array($iterator));
+                $this->assertSame(['firstName' => $child1, 'lastName' => $child2], iterator_to_array($iterator));
             }));
 
         $form->setData('foo');
@@ -476,7 +476,7 @@ public function testSubmitSupportsDynamicAdditionAndRemovalOfChildren()
             ->method('submit');
 
         // pass NULL to all children
-        $this->form->submit(array());
+        $this->form->submit([]);
     }
 
     public function testSubmitMapsSubmittedChildrenOntoExistingViewData()
@@ -485,10 +485,10 @@ public function testSubmitMapsSubmittedChildrenOntoExistingViewData()
         $form = $this->getBuilder()
             ->setCompound(true)
             ->setDataMapper($mapper)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'foo' => 'bar',
-            )))
+            ]))
             ->setData('foo')
             ->getForm();
 
@@ -500,15 +500,15 @@ public function testSubmitMapsSubmittedChildrenOntoExistingViewData()
             ->with($this->isInstanceOf('\RecursiveIteratorIterator'), 'bar')
             ->will($this->returnCallback(function (\RecursiveIteratorIterator $iterator) use ($child1, $child2) {
                 $this->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $this->assertSame(array('firstName' => $child1, 'lastName' => $child2), iterator_to_array($iterator));
+                $this->assertSame(['firstName' => $child1, 'lastName' => $child2], iterator_to_array($iterator));
                 $this->assertEquals('Bernhard', $child1->getData());
                 $this->assertEquals('Schussek', $child2->getData());
             }));
 
-        $form->submit(array(
+        $form->submit([
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
-        ));
+        ]);
     }
 
     public function testMapFormsToDataIsNotInvokedIfInheritData()
@@ -518,10 +518,10 @@ public function testMapFormsToDataIsNotInvokedIfInheritData()
             ->setCompound(true)
             ->setDataMapper($mapper)
             ->setInheritData(true)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'foo' => 'bar',
-            )))
+            ]))
             ->getForm();
 
         $form->add($child1 = $this->getBuilder('firstName')->setCompound(false)->getForm());
@@ -530,10 +530,10 @@ public function testMapFormsToDataIsNotInvokedIfInheritData()
         $mapper->expects($this->never())
             ->method('mapFormsToData');
 
-        $form->submit(array(
+        $form->submit([
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
-        ));
+        ]);
     }
 
     /*
@@ -549,7 +549,7 @@ public function testSubmitRestoresViewDataIfCompoundAndEmpty()
             ->setData($object)
             ->getForm();
 
-        $form->submit(array());
+        $form->submit([]);
 
         $this->assertSame($object, $form->getData());
     }
@@ -572,22 +572,22 @@ public function testSubmitMapsSubmittedChildrenOntoEmptyData()
             ->with($this->isInstanceOf('\RecursiveIteratorIterator'), $object)
             ->will($this->returnCallback(function (\RecursiveIteratorIterator $iterator) use ($child) {
                 $this->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $this->assertSame(array('name' => $child), iterator_to_array($iterator));
+                $this->assertSame(['name' => $child], iterator_to_array($iterator));
             }));
 
-        $form->submit(array(
+        $form->submit([
             'name' => 'Bernhard',
-        ));
+        ]);
     }
 
     public function requestMethodProvider()
     {
-        return array(
-            array('POST'),
-            array('PUT'),
-            array('DELETE'),
-            array('PATCH'),
-        );
+        return [
+            ['POST'],
+            ['PUT'],
+            ['DELETE'],
+            ['PATCH'],
+        ];
     }
 
     /**
@@ -598,26 +598,26 @@ public function testSubmitPostOrPutRequest($method)
         $path = tempnam(sys_get_temp_dir(), 'sf2');
         touch($path);
 
-        $values = array(
-            'author' => array(
+        $values = [
+            'author' => [
                 'name' => 'Bernhard',
-                'image' => array('filename' => 'foobar.png'),
-            ),
-        );
-
-        $files = array(
-            'author' => array(
-                'error' => array('image' => UPLOAD_ERR_OK),
-                'name' => array('image' => 'upload.png'),
-                'size' => array('image' => 123),
-                'tmp_name' => array('image' => $path),
-                'type' => array('image' => 'image/png'),
-            ),
-        );
-
-        $request = new Request(array(), $values, array(), array(), $files, array(
+                'image' => ['filename' => 'foobar.png'],
+            ],
+        ];
+
+        $files = [
+            'author' => [
+                'error' => ['image' => UPLOAD_ERR_OK],
+                'name' => ['image' => 'upload.png'],
+                'size' => ['image' => 123],
+                'tmp_name' => ['image' => $path],
+                'type' => ['image' => 'image/png'],
+            ],
+        ];
+
+        $request = new Request([], $values, [], [], $files, [
             'REQUEST_METHOD' => $method,
-        ));
+        ]);
 
         $form = $this->getBuilder('author')
             ->setMethod($method)
@@ -646,24 +646,24 @@ public function testSubmitPostOrPutRequestWithEmptyRootFormName($method)
         $path = tempnam(sys_get_temp_dir(), 'sf2');
         touch($path);
 
-        $values = array(
+        $values = [
             'name' => 'Bernhard',
             'extra' => 'data',
-        );
+        ];
 
-        $files = array(
-            'image' => array(
+        $files = [
+            'image' => [
                 'error' => UPLOAD_ERR_OK,
                 'name' => 'upload.png',
                 'size' => 123,
                 'tmp_name' => $path,
                 'type' => 'image/png',
-            ),
-        );
+            ],
+        ];
 
-        $request = new Request(array(), $values, array(), array(), $files, array(
+        $request = new Request([], $values, [], [], $files, [
             'REQUEST_METHOD' => $method,
-        ));
+        ]);
 
         $form = $this->getBuilder('')
             ->setMethod($method)
@@ -680,7 +680,7 @@ public function testSubmitPostOrPutRequestWithEmptyRootFormName($method)
 
         $this->assertEquals('Bernhard', $form['name']->getData());
         $this->assertEquals($file, $form['image']->getData());
-        $this->assertEquals(array('extra' => 'data'), $form->getExtraData());
+        $this->assertEquals(['extra' => 'data'], $form->getExtraData());
 
         unlink($path);
     }
@@ -693,21 +693,21 @@ public function testSubmitPostOrPutRequestWithSingleChildForm($method)
         $path = tempnam(sys_get_temp_dir(), 'sf2');
         touch($path);
 
-        $files = array(
-            'image' => array(
+        $files = [
+            'image' => [
                 'error' => UPLOAD_ERR_OK,
                 'name' => 'upload.png',
                 'size' => 123,
                 'tmp_name' => $path,
                 'type' => 'image/png',
-            ),
-        );
+            ],
+        ];
 
-        $request = new Request(array(), array(), array(), array(), $files, array(
+        $request = new Request([], [], [], [], $files, [
             'REQUEST_METHOD' => $method,
-        ));
+        ]);
 
-        $form = $this->getBuilder('image', null, null, array('allow_file_upload' => true))
+        $form = $this->getBuilder('image', null, null, ['allow_file_upload' => true])
             ->setMethod($method)
             ->setRequestHandler(new HttpFoundationRequestHandler())
             ->getForm();
@@ -729,13 +729,13 @@ public function testSubmitPostOrPutRequestWithSingleChildFormUploadedFile($metho
         $path = tempnam(sys_get_temp_dir(), 'sf2');
         touch($path);
 
-        $values = array(
+        $values = [
             'name' => 'Bernhard',
-        );
+        ];
 
-        $request = new Request(array(), $values, array(), array(), array(), array(
+        $request = new Request([], $values, [], [], [], [
             'REQUEST_METHOD' => $method,
-        ));
+        ]);
 
         $form = $this->getBuilder('name')
             ->setMethod($method)
@@ -751,16 +751,16 @@ public function testSubmitPostOrPutRequestWithSingleChildFormUploadedFile($metho
 
     public function testSubmitGetRequest()
     {
-        $values = array(
-            'author' => array(
+        $values = [
+            'author' => [
                 'firstName' => 'Bernhard',
                 'lastName' => 'Schussek',
-            ),
-        );
+            ],
+        ];
 
-        $request = new Request($values, array(), array(), array(), array(), array(
+        $request = new Request($values, [], [], [], [], [
             'REQUEST_METHOD' => 'GET',
-        ));
+        ]);
 
         $form = $this->getBuilder('author')
             ->setMethod('GET')
@@ -779,15 +779,15 @@ public function testSubmitGetRequest()
 
     public function testSubmitGetRequestWithEmptyRootFormName()
     {
-        $values = array(
+        $values = [
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
             'extra' => 'data',
-        );
+        ];
 
-        $request = new Request($values, array(), array(), array(), array(), array(
+        $request = new Request($values, [], [], [], [], [
             'REQUEST_METHOD' => 'GET',
-        ));
+        ]);
 
         $form = $this->getBuilder('')
             ->setMethod('GET')
@@ -802,7 +802,7 @@ public function testSubmitGetRequestWithEmptyRootFormName()
 
         $this->assertEquals('Bernhard', $form['firstName']->getData());
         $this->assertEquals('Schussek', $form['lastName']->getData());
-        $this->assertEquals(array('extra' => 'data'), $form->getExtraData());
+        $this->assertEquals(['extra' => 'data'], $form->getExtraData());
     }
 
     public function testGetErrors()
@@ -818,7 +818,7 @@ public function testGetErrors()
              (string) $errors
         );
 
-        $this->assertSame(array($error1, $error2), iterator_to_array($errors));
+        $this->assertSame([$error1, $error2], iterator_to_array($errors));
     }
 
     public function testGetErrorsDeep()
@@ -840,7 +840,7 @@ public function testGetErrorsDeep()
         );
 
         $this->assertSame(
-             array($error1, $error2, $nestedError),
+             [$error1, $error2, $nestedError],
              iterator_to_array($errors)
         );
     }
@@ -880,7 +880,7 @@ public function testGetErrorsDeepRecursive()
     public function testCreateViewWithChildren()
     {
         $type = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormTypeInterface')->getMock();
-        $options = array('a' => 'Foo', 'b' => 'Bar');
+        $options = ['a' => 'Foo', 'b' => 'Bar'];
         $field1 = $this->getMockForm('foo');
         $field2 = $this->getMockForm('bar');
         $view = new FormView();
@@ -910,7 +910,7 @@ public function testCreateViewWithChildren()
         $type->expects($this->once())
             ->method('buildView')
             ->with($view, $this->form, $options)
-            ->will($this->returnCallback($assertChildViewsEqual(array())));
+            ->will($this->returnCallback($assertChildViewsEqual([])));
 
         // Then add the first child form
         $field1->expects($this->once())
@@ -927,7 +927,7 @@ public function testCreateViewWithChildren()
         $type->expects($this->once())
             ->method('finishView')
             ->with($view, $this->form, $options)
-            ->will($this->returnCallback($assertChildViewsEqual(array('foo' => $field1View, 'bar' => $field2View))));
+            ->will($this->returnCallback($assertChildViewsEqual(['foo' => $field1View, 'bar' => $field2View])));
 
         $this->assertSame($view, $this->form->createView());
     }
@@ -940,8 +940,8 @@ public function testNoClickedButtonBeforeSubmission()
     public function testNoClickedButton()
     {
         $button = $this->getMockBuilder('Symfony\Component\Form\SubmitButton')
-            ->setConstructorArgs(array(new SubmitButtonBuilder('submit')))
-            ->setMethods(array('isClicked'))
+            ->setConstructorArgs([new SubmitButtonBuilder('submit')])
+            ->setMethods(['isClicked'])
             ->getMock();
 
         $button->expects($this->any())
@@ -954,7 +954,7 @@ public function testNoClickedButton()
         $this->form->setParent($parentForm);
         $this->form->add($button);
         $this->form->add($nestedForm);
-        $this->form->submit(array());
+        $this->form->submit([]);
 
         $this->assertNull($this->form->getClickedButton());
     }
@@ -962,8 +962,8 @@ public function testNoClickedButton()
     public function testClickedButton()
     {
         $button = $this->getMockBuilder('Symfony\Component\Form\SubmitButton')
-            ->setConstructorArgs(array(new SubmitButtonBuilder('submit')))
-            ->setMethods(array('isClicked'))
+            ->setConstructorArgs([new SubmitButtonBuilder('submit')])
+            ->setMethods(['isClicked'])
             ->getMock();
 
         $button->expects($this->any())
@@ -971,7 +971,7 @@ public function testClickedButton()
             ->will($this->returnValue(true));
 
         $this->form->add($button);
-        $this->form->submit(array());
+        $this->form->submit([]);
 
         $this->assertSame($button, $this->form->getClickedButton());
     }
@@ -981,8 +981,8 @@ public function testClickedButtonFromNestedForm()
         $button = $this->getBuilder('submit')->getForm();
 
         $nestedForm = $this->getMockBuilder('Symfony\Component\Form\Form')
-            ->setConstructorArgs(array($this->getBuilder('nested')))
-            ->setMethods(array('getClickedButton'))
+            ->setConstructorArgs([$this->getBuilder('nested')])
+            ->setMethods(['getClickedButton'])
             ->getMock();
 
         $nestedForm->expects($this->any())
@@ -990,7 +990,7 @@ public function testClickedButtonFromNestedForm()
             ->will($this->returnValue($button));
 
         $this->form->add($nestedForm);
-        $this->form->submit(array());
+        $this->form->submit([]);
 
         $this->assertSame($button, $this->form->getClickedButton());
     }
@@ -1000,8 +1000,8 @@ public function testClickedButtonFromParentForm()
         $button = $this->getBuilder('submit')->getForm();
 
         $parentForm = $this->getMockBuilder('Symfony\Component\Form\Form')
-            ->setConstructorArgs(array($this->getBuilder('parent')))
-            ->setMethods(array('getClickedButton'))
+            ->setConstructorArgs([$this->getBuilder('parent')])
+            ->setMethods(['getClickedButton'])
             ->getMock();
 
         $parentForm->expects($this->any())
@@ -1009,7 +1009,7 @@ public function testClickedButtonFromParentForm()
             ->will($this->returnValue($button));
 
         $this->form->setParent($parentForm);
-        $this->form->submit(array());
+        $this->form->submit([]);
 
         $this->assertSame($button, $this->form->getClickedButton());
     }
@@ -1026,10 +1026,10 @@ public function testDisabledButtonIsNotSubmitted()
             ->add($submit)
         ;
 
-        $form->submit(array(
+        $form->submit([
             'text' => '',
             'submit' => '',
-        ));
+        ]);
 
         $this->assertTrue($submit->isDisabled());
         $this->assertFalse($submit->isClicked());
@@ -1039,17 +1039,17 @@ public function testDisabledButtonIsNotSubmitted()
     public function testArrayTransformationFailureOnSubmit()
     {
         $this->form->add($this->getBuilder('foo')->setCompound(false)->getForm());
-        $this->form->add($this->getBuilder('bar', null, null, array('multiple' => false))->setCompound(false)->getForm());
+        $this->form->add($this->getBuilder('bar', null, null, ['multiple' => false])->setCompound(false)->getForm());
 
-        $this->form->submit(array(
-            'foo' => array('foo'),
-            'bar' => array('bar'),
-        ));
+        $this->form->submit([
+            'foo' => ['foo'],
+            'bar' => ['bar'],
+        ]);
 
         $this->assertNull($this->form->get('foo')->getData());
         $this->assertSame('Submitted data was expected to be text or number, array given.', $this->form->get('foo')->getTransformationFailure()->getMessage());
 
-        $this->assertSame(array('bar'), $this->form->get('bar')->getData());
+        $this->assertSame(['bar'], $this->form->get('bar')->getData());
     }
 
     public function testFileUpload()
@@ -1058,10 +1058,10 @@ public function testFileUpload()
         $this->form->add($this->getBuilder('foo')->setRequestHandler($reqHandler)->getForm());
         $this->form->add($this->getBuilder('bar')->setRequestHandler($reqHandler)->getForm());
 
-        $this->form->submit(array(
+        $this->form->submit([
             'foo' => 'Foo',
             'bar' => new UploadedFile(__FILE__, 'upload.png', 'image/png', 123, UPLOAD_ERR_OK),
-        ));
+        ]);
 
         $this->assertSame('Submitted data was expected to be text or number, file upload given.', $this->form->get('bar')->getTransformationFailure()->getMessage());
         $this->assertNull($this->form->get('bar')->getData());
diff --git a/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php b/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
index c29e3fe2fc5e..23be3ab1aa3c 100644
--- a/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
+++ b/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
@@ -69,22 +69,22 @@ public function testDescribeOption(OptionsResolver $optionsResolver, array $opti
 
     public function getDescribeDefaultsTestData()
     {
-        $options['core_types'] = array('Symfony\Component\Form\Extension\Core\Type\FormType');
-        $options['service_types'] = array('Symfony\Bridge\Doctrine\Form\Type\EntityType');
-        $options['extensions'] = array('Symfony\Component\Form\Extension\Csrf\Type\FormTypeCsrfExtension');
-        $options['guessers'] = array('Symfony\Component\Form\Extension\Validator\ValidatorTypeGuesser');
+        $options['core_types'] = ['Symfony\Component\Form\Extension\Core\Type\FormType'];
+        $options['service_types'] = ['Symfony\Bridge\Doctrine\Form\Type\EntityType'];
+        $options['extensions'] = ['Symfony\Component\Form\Extension\Csrf\Type\FormTypeCsrfExtension'];
+        $options['guessers'] = ['Symfony\Component\Form\Extension\Validator\ValidatorTypeGuesser'];
         $options['decorated'] = false;
 
-        yield array(null, $options, 'defaults_1');
+        yield [null, $options, 'defaults_1'];
     }
 
     public function getDes
10000
cribeResolvedFormTypeTestData()
     {
-        $typeExtensions = array(new FormTypeCsrfExtension(new CsrfTokenManager()));
+        $typeExtensions = [new FormTypeCsrfExtension(new CsrfTokenManager())];
         $parent = new ResolvedFormType(new FormType(), $typeExtensions);
 
-        yield array(new ResolvedFormType(new ChoiceType(), array(), $parent), array('decorated' => false), 'resolved_form_type_1');
-        yield array(new ResolvedFormType(new FormType()), array('decorated' => false), 'resolved_form_type_2');
+        yield [new ResolvedFormType(new ChoiceType(), [], $parent), ['decorated' => false], 'resolved_form_type_1'];
+        yield [new ResolvedFormType(new FormType()), ['decorated' => false], 'resolved_form_type_2'];
     }
 
     public function getDescribeOptionTestData()
@@ -92,18 +92,18 @@ public function getDescribeOptionTestData()
         $parent = new ResolvedFormType(new FormType());
         $options['decorated'] = false;
 
-        $resolvedType = new ResolvedFormType(new ChoiceType(), array(), $parent);
+        $resolvedType = new ResolvedFormType(new ChoiceType(), [], $parent);
         $options['type'] = $resolvedType->getInnerType();
         $options['option'] = 'choice_translation_domain';
-        yield array($resolvedType->getOptionsResolver(), $options, 'default_option_with_normalizer');
+        yield [$resolvedType->getOptionsResolver(), $options, 'default_option_with_normalizer'];
 
-        $resolvedType = new ResolvedFormType(new FooType(), array(), $parent);
+        $resolvedType = new ResolvedFormType(new FooType(), [], $parent);
         $options['type'] = $resolvedType->getInnerType();
         $options['option'] = 'foo';
-        yield array($resolvedType->getOptionsResolver(), $options, 'required_option_with_allowed_values');
+        yield [$resolvedType->getOptionsResolver(), $options, 'required_option_with_allowed_values'];
 
         $options['option'] = 'empty_data';
-        yield array($resolvedType->getOptionsResolver(), $options, 'overridden_option_with_default_closures');
+        yield [$resolvedType->getOptionsResolver(), $options, 'overridden_option_with_default_closures'];
     }
 
     abstract protected function getDescriptor();
@@ -113,7 +113,7 @@ abstract protected function getFormat();
     private function getObjectDescription($object, array $options)
     {
         $output = new BufferedOutput(BufferedOutput::VERBOSITY_NORMAL, $options['decorated']);
-        $io = new SymfonyStyle(new ArrayInput(array()), $output);
+        $io = new SymfonyStyle(new ArrayInput([]), $output);
 
         $this->getDescriptor()->describe($io, $object, $options);
 
@@ -140,11 +140,11 @@ public function configureOptions(OptionsResolver $resolver)
             $foo = $options['foo'];
 
             return function (FormInterface $form) use ($foo) {
-                return $form->getConfig()->getCompound() ? array($foo) : $foo;
+                return $form->getConfig()->getCompound() ? [$foo] : $foo;
             };
         });
         $resolver->setAllowedTypes('foo', 'string');
-        $resolver->setAllowedValues('foo', array('bar', 'baz'));
+        $resolver->setAllowedValues('foo', ['bar', 'baz']);
         $resolver->setNormalizer('foo', function (Options $options, $value) {
             return (string) $value;
         });
diff --git a/src/Symfony/Component/Form/Tests/DependencyInjection/FormPassTest.php b/src/Symfony/Component/Form/Tests/DependencyInjection/FormPassTest.php
index f5939b40e09c..52fc78aed908 100644
--- a/src/Symfony/Component/Form/Tests/DependencyInjection/FormPassTest.php
+++ b/src/Symfony/Component/Form/Tests/DependencyInjection/FormPassTest.php
@@ -58,10 +58,10 @@ public function testAddTaggedTypes()
         $extDefinition = $container->getDefinition('form.extension');
 
         $this->assertEquals(
-            (new Definition(ServiceLocator::class, array(array(
+            (new Definition(ServiceLocator::class, [[
                 __CLASS__.'_Type1' => new ServiceClosureArgument(new Reference('my.type1')),
                 __CLASS__.'_Type2' => new ServiceClosureArgument(new Reference('my.type2')),
-            ))))->addTag('container.service_locator')->setPublic(false),
+            ]]))->addTag('container.service_locator')->setPublic(false),
             $extDefinition->getArgument(0)
         );
     }
@@ -80,10 +80,10 @@ public function testAddTaggedTypesToDebugCommand()
         $cmdDefinition = $container->getDefinition('console.command.form_debug');
 
         $this->assertEquals(
-            array(
+            [
                 'Symfony\Component\Form\Extension\Core\Type',
                 __NAMESPACE__,
-            ),
+            ],
             $cmdDefinition->getArgument(1)
         );
     }
@@ -112,44 +112,44 @@ public function testAddTaggedTypeExtensions(array $extensions, array $expectedRe
      */
     public function addTaggedTypeExtensionsDataProvider()
     {
-        return array(
-            array(
-                array(
-                    'my.type_extension1' => array('extended_type' => 'type1'),
-                    'my.type_extension2' => array('extended_type' => 'type1'),
-                    'my.type_extension3' => array('extended_type' => 'type2'),
-                ),
-                array(
-                    'type1' => new IteratorArgument(array(
+        return [
+            [
+                [
+                    'my.type_extension1' => ['extended_type' => 'type1'],
+                    'my.type_extension2' => ['extended_type' => 'type1'],
+                    'my.type_extension3' => ['extended_type' => 'type2'],
+                ],
+                [
+                    'type1' => new IteratorArgument([
                         new Reference('my.type_extension1'),
                         new Reference('my.type_extension2'),
-                    )),
-                    'type2' => new IteratorArgument(array(new Reference('my.type_extension3'))),
-                ),
-            ),
-            array(
-                array(
-                    'my.type_extension1' => array('extended_type' => 'type1', 'priority' => 1),
-                    'my.type_extension2' => array('extended_type' => 'type1', 'priority' => 2),
-                    'my.type_extension3' => array('extended_type' => 'type1', 'priority' => -1),
-                    'my.type_extension4' => array('extended_type' => 'type2', 'priority' => 2),
-                    'my.type_extension5' => array('extended_type' => 'type2', 'priority' => 1),
-                    'my.type_extension6' => array('extended_type' => 'type2', 'priority' => 1),
-                ),
-                array(
-                    'type1' => new IteratorArgument(array(
+                    ]),
+                    'type2' => new IteratorArgument([new Reference('my.type_extension3')]),
+                ],
+            ],
+            [
+                [
+                    'my.type_extension1' => ['extended_type' => 'type1', 'priority' => 1],
+                    'my.type_extension2' => ['extended_type' => 'type1', 'priority' => 2],
+                    'my.type_extension3' => ['extended_type' => 'type1', 'priority' => -1],
+                    'my.type_extension4' => ['extended_type' => 'type2', 'priority' => 2],
+                    'my.type_extension5' => ['extended_type' => 'type2', 'priority' => 1],
+                    'my.type_extension6' => ['extended_type' => 'type2', 'priority' => 1],
+                ],
+                [
+                    'type1' => new IteratorArgument([
                         new Reference('my.type_extension2'),
                         new Reference('my.type_extension1'),
                         new Reference('my.type_extension3'),
-                    )),
-                    'type2' => new IteratorArgument(array(
+                    ]),
+                    'type2' => new IteratorArgument([
                         new Reference('my.type_extension4'),
                         new Reference('my.type_extension5'),
                         new Reference('my.type_extension6'),
-                    )),
-                ),
-            ),
-        );
+                    ]),
+                ],
+            ],
+        ];
     }
 
     /**
@@ -186,10 +186,10 @@ public function testAddTaggedGuessers()
         $extDefinition = $container->getDefinition('form.extension');
 
         $this->assertEquals(
-            new IteratorArgument(array(
+            new IteratorArgument([
                 new Reference('my.guesser1'),
                 new Reference('my.guesser2'),
-            )),
+            ]),
             $extDefinition->getArgument(2)
         );
     }
@@ -197,7 +197,7 @@ public function testAddTaggedGuessers()
     /**
      * @dataProvider privateTaggedServicesProvider
      */
-    public function testPrivateTaggedServices($id, $tagName, callable $assertion, array $tagAttributes = array())
+    public function testPrivateTaggedServices($id, $tagName, callable $assertion, array $tagAttributes = [])
     {
         $formPass = new FormPass();
         $container = new ContainerBuilder();
@@ -211,8 +211,8 @@ public function testPrivateTaggedServices($id, $tagName, callable $assertion, ar
 
     public function privateTaggedServicesProvider()
     {
-        return array(
-            array(
+        return [
+            [
                 'my.type',
                 'form.type',
                 function (ContainerBuilder $container) {
@@ -221,40 +221,40 @@ function (ContainerBuilder $container) {
                     $this->assertInstanceOf(Reference::class, $formTypes);
 
                     $locator = $container->getDefinition((string) $formTypes);
-                    $expectedLocatorMap = array(
+                    $expectedLocatorMap = [
                         'stdClass' => new ServiceClosureArgument(new Reference('my.type')),
-                    );
+                    ];
 
                     $this->assertInstanceOf(Definition::class, $locator);
                     $this->assertEquals($expectedLocatorMap, $locator->getArgument(0));
                 },
-            ),
-            array(
+            ],
+            [
                 'my.type_extension',
                 'form.type_extension',
                 function (ContainerBuilder $container) {
                     $this->assertEquals(
-                        array('Symfony\Component\Form\Extension\Core\Type\FormType' => new IteratorArgument(array(new Reference('my.type_extension')))),
+                        ['Symfony\Component\Form\Extension\Core\Type\FormType' => new IteratorArgument([new Reference('my.type_extension')])],
                         $container->getDefinition('form.extension')->getArgument(1)
                     );
                 },
-                array('extended_type' => 'Symfony\Component\Form\Extension\Core\Type\FormType'),
-            ),
-            array('my.guesser', 'form.type_guesser', function (ContainerBuilder $container) {
-                $this->assertEquals(new IteratorArgument(array(new Reference('my.guesser'))), $container->getDefinition('form.extension')->getArgument(2));
-            }),
-        );
+                ['extended_type' => 'Symfony\Component\Form\Extension\Core\Type\FormType'],
+            ],
+            ['my.guesser', 'form.type_guesser', function (ContainerBuilder $container) {
+                $this->assertEquals(new IteratorArgument([new Reference('my.guesser')]), $container->getDefinition('form.extension')->getArgument(2));
+            }],
+        ];
     }
 
     private function createExtensionDefinition()
     {
         $definition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension');
         $definition->setPublic(true);
-        $definition->setArguments(array(
-            array(),
-            array(),
-            new IteratorArgument(array()),
-        ));
+        $definition->setArguments([
+            [],
+            [],
+            new IteratorArgument([]),
+        ]);
 
         return $definition;
     }
@@ -263,11 +263,11 @@ private function createDebugCommandDefinition()
     {
         $definition = new Definition('Symfony\Component\Form\Command\DebugCommand');
         $definition->setPublic(true);
-        $definition->setArguments(array(
+        $definition->setArguments([
             $formRegistry = $this->getMockBuilder(FormRegistryInterface::class)->getMock(),
-            array(),
-            array('Symfony\Component\Form\Extension\Core\Type'),
-        ));
+            [],
+            ['Symfony\Component\Form\Extension\Core\Type'],
+        ]);
 
         return $definition;
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/PropertyPathMapperTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/PropertyPathMapperTest.php
index 8632b4c6db80..901af61ce94f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/PropertyPathMapperTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/PropertyPathMapperTest.php
@@ -46,8 +46,8 @@ protected function setUp()
     private function getPropertyPath($path)
     {
         return $this->getMockBuilder('Symfony\Component\PropertyAccess\PropertyPath')
-            ->setConstructorArgs(array($path))
-            ->setMethods(array('getValue', 'setValue'))
+            ->setConstructorArgs([$path])
+            ->setMethods(['getValue', 'setValue'])
             ->getMock();
     }
 
@@ -61,8 +61,8 @@ private function getPropertyPath($path)
     private function getForm(FormConfigInterface $config, $synchronized = true, $submitted = true)
     {
         $form = $this->getMockBuilder('Symfony\Component\Form\Form')
-            ->setConstructorArgs(array($config))
-            ->setMethods(array('isSynchronized', 'isSubmitted'))
+            ->setConstructorArgs([$config])
+            ->setMethods(['isSynchronized', 'isSubmitted'])
             ->getMock();
 
         $form->expects($this->any())
@@ -92,7 +92,7 @@ public function testMapDataToFormsPassesObjectRefIfByReference()
         $config->setPropertyPath($propertyPath);
         $form = $this->getForm($config);
 
-        $this->mapper->mapDataToForms($car, array($form));
+        $this->mapper->mapDataToForms($car, [$form]);
 
         // Can't use isIdentical() above because mocks always clone their
         // arguments which can't be disabled in PHPUnit 3.6
@@ -115,7 +115,7 @@ public function testMapDataToFormsPassesObjectCloneIfNotByReference()
         $config->setPropertyPath($propertyPath);
         $form = $this->getForm($config);
 
-        $this->mapper->mapDataToForms($car, array($form));
+        $this->mapper->mapDataToForms($car, [$form]);
 
         $this->assertNotSame($engine, $form->getData());
         $this->assertEquals($engine, $form->getData());
@@ -131,7 +131,7 @@ public function testMapDataToFormsIgnoresEmptyPropertyPath()
 
         $this->assertNull($form->getPropertyPath());
 
-        $this->mapper->mapDataToForms($car, array($form));
+        $this->mapper->mapDataToForms($car, [$form]);
 
         $this->assertNull($form->getData());
     }
@@ -150,7 +150,7 @@ public function testMapDataToFormsIgnoresUnmapped()
         $config->setPropertyPath($propertyPath);
         $form = $this->getForm($config);
 
-        $this->mapper->mapDataToForms($car, array($form));
+        $this->mapper->mapDataToForms($car, [$form]);
 
         $this->assertNull($form->getData());
     }
@@ -169,15 +169,15 @@ public function testMapDataToFormsSetsDefaultDataIfPassedDataIsNull()
         $config->setData($default);
 
         $form = $this->getMockBuilder('Symfony\Component\Form\Form')
-            ->setConstructorArgs(array($config))
-            ->setMethods(array('setData'))
+            ->setConstructorArgs([$config])
+            ->setMethods(['setData'])
             ->getMock();
 
         $form->expects($this->once())
             ->method('setData')
             ->with($default);
 
-        $this->mapper->mapDataToForms(null, array($form));
+        $this->mapper->mapDataToForms(null, [$form]);
     }
 
     public function testMapDataToFormsSetsDefaultDataIfPassedDataIsEmptyArray()
@@ -194,15 +194,15 @@ public function testMapDataToFormsSetsDefaultDataIfPassedDataIsEmptyArray()
         $config->setData($default);
 
         $form = $this->getMockBuilder('Symfony\Component\Form\Form')
-            ->setConstructorArgs(array($config))
-            ->setMethods(array('setData'))
+            ->setConstructorArgs([$config])
+            ->setMethods(['setData'])
             ->getMock();
 
         $form->expects($this->once())
             ->method('setData')
             ->with($default);
 
-        $this->mapper->mapDataToForms(array(), array($form));
+        $this->mapper->mapDataToForms([], [$form]);
     }
 
     public function testMapFormsToDataWritesBackIfNotByReference()
@@ -221,7 +221,7 @@ public function testMapFormsToDataWritesBackIfNotByReference()
         $config->setData($engine);
         $form = $this->getForm($config);
 
-        $this->mapper->mapFormsToData(array($form), $car);
+        $this->mapper->mapFormsToData([$form], $car);
     }
 
     public function testMapFormsToDataWritesBackIfByReferenceButNoReference()
@@ -240,7 +240,7 @@ public function testMapFormsToDataWritesBackIfByReferenceButNoReference()
         $config->setData($engine);
         $form = $this->getForm($config);
 
-        $this->mapper->mapFormsToData(array($form), $car);
+        $this->mapper->mapFormsToData([$form], $car);
     }
 
     public function testMapFormsToDataWritesBackIfByReferenceAndReference()
@@ -264,7 +264,7 @@ public function testMapFormsToDataWritesBackIfByReferenceAndReference()
         $config->setData($engine);
         $form = $this->getForm($config);
 
-        $this->mapper->mapFormsToData(array($form), $car);
+        $this->mapper->mapFormsToData([$form], $car);
     }
 
     public function testMapFormsToDataIgnoresUnmapped()
@@ -283,7 +283,7 @@ public function testMapFormsToDataIgnoresUnmapped()
         $config->setMapped(false);
         $form = $this->getForm($config);
 
-        $this->mapper->mapFormsToData(array($form), $car);
+        $this->mapper->mapFormsToData([$form], $car);
     }
 
     public function testMapFormsToDataIgnoresUnsubmittedForms()
@@ -301,7 +301,7 @@ public function testMapFormsToDataIgnoresUnsubmittedForms()
         $config->setData($engine);
         $form = $this->getForm($config, true, false);
 
-        $this->mapper->mapFormsToData(array($form), $car);
+        $this->mapper->mapFormsToData([$form], $car);
     }
 
     public function testMapFormsToDataIgnoresEmptyData()
@@ -318,7 +318,7 @@ public function testMapFormsToDataIgnoresEmptyData()
         $config->setData(null);
         $form = $this->getForm($config);
 
-        $this->mapper->mapFormsToData(array($form), $car);
+        $this->mapper->mapFormsToData([$form], $car);
     }
 
     public function testMapFormsToDataIgnoresUnsynchronized()
@@ -336,7 +336,7 @@ public function testMapFormsToDataIgnoresUnsynchronized()
         $config->setData($engine);
         $form = $this->getForm($config, false);
 
-        $this->mapper->mapFormsToData(array($form), $car);
+        $this->mapper->mapFormsToData([$form], $car);
     }
 
     public function testMapFormsToDataIgnoresDisabled()
@@ -355,7 +355,7 @@ public function testMapFormsToDataIgnoresDisabled()
         $config->setDisabled(true);
         $form = $this->getForm($config);
 
-        $this->mapper->mapFormsToData(array($form), $car);
+        $this->mapper->mapFormsToData([$form], $car);
     }
 
     /**
@@ -363,7 +363,7 @@ public function testMapFormsToDataIgnoresDisabled()
      */
     public function testMapFormsToDataDoesNotChangeEqualDateTimeInstance($date)
     {
-        $article = array();
+        $article = [];
         $publishedAt = $date;
         $article['publishedAt'] = clone $publishedAt;
         $propertyPath = $this->getPropertyPath('[publishedAt]');
@@ -382,14 +382,14 @@ public function testMapFormsToDataDoesNotChangeEqualDateTimeInstance($date)
         $config->setData($publishedAt);
         $form = $this->getForm($config);
 
-        $this->mapper->mapFormsToData(array($form), $article);
+        $this->mapper->mapFormsToData([$form], $article);
     }
 
     public function provideDate()
     {
-        return array(
-            array(new \DateTime()),
-            array(new \DateTimeImmutable()),
-        );
+        return [
+            [new \DateTime()],
+            [new \DateTimeImmutable()],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ArrayToPartsTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ArrayToPartsTransformerTest.php
index 220a36765521..4f11c7f7966d 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ArrayToPartsTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ArrayToPartsTransformerTest.php
@@ -20,10 +20,10 @@ class ArrayToPartsTransformerTest extends TestCase
 
     protected function setUp()
     {
-        $this->transformer = new ArrayToPartsTransformer(array(
-            'first' => array('a', 'b', 'c'),
-            'second' => array('d', 'e', 'f'),
-        ));
+        $this->transformer = new ArrayToPartsTransformer([
+            'first' => ['a', 'b', 'c'],
+            'second' => ['d', 'e', 'f'],
+        ]);
     }
 
     protected function tearDown()
@@ -33,37 +33,37 @@ protected function tearDown()
 
     public function testTransform()
     {
-        $input = array(
+        $input = [
             'a' => '1',
             'b' => '2',
             'c' => '3',
             'd' => '4',
             'e' => '5',
             'f' => '6',
-        );
+        ];
 
-        $output = array(
-            'first' => array(
+        $output = [
+            'first' => [
                 'a' => '1',
                 'b' => '2',
                 'c' => '3',
-            ),
-            'second' => array(
+            ],
+            'second' => [
                 'd' => '4',
                 'e' => '5',
                 'f' => '6',
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($output, $this->transformer->transform($input));
     }
 
     public function testTransformEmpty()
     {
-        $output = array(
+        $output = [
             'first' => null,
             'second' => null,
-        );
+        ];
 
         $this->assertSame($output, $this->transformer->transform(null));
     }
@@ -78,47 +78,47 @@ public function testTransformRequiresArray()
 
     public function testReverseTransform()
     {
-        $input = array(
-            'first' => array(
+        $input = [
+            'first' => [
                 'a' => '1',
                 'b' => '2',
                 'c' => '3',
-            ),
-            'second' => array(
+            ],
+            'second' => [
                 'd' => '4',
                 'e' => '5',
                 'f' => '6',
-            ),
-        );
+            ],
+        ];
 
-        $output = array(
+        $output = [
             'a' => '1',
             'b' => '2',
             'c' => '3',
             'd' => '4',
             'e' => '5',
             'f' => '6',
-        );
+        ];
 
         $this->assertSame($output, $this->transformer->reverseTransform($input));
     }
 
     public function testReverseTransformCompletelyEmpty()
     {
-        $input = array(
+        $input = [
             'first' => '',
             'second' => '',
-        );
+        ];
 
         $this->assertNull($this->transformer->reverseTransform($input));
     }
 
     public function testReverseTransformCompletelyNull()
     {
-        $input = array(
+        $input = [
             'first' => null,
             'second' => null,
-        );
+        ];
 
         $this->assertNull($this->transformer->reverseTransform($input));
     }
@@ -128,14 +128,14 @@ public function testReverseTransformCompletelyNull()
      */
     public function testReverseTransformPartiallyNull()
     {
-        $input = array(
-            'first' => array(
+        $input = [
+            'first' => [
                 'a' => '1',
                 'b' => '2',
                 'c' => '3',
-            ),
+            ],
             'second' => null,
-        );
+        ];
 
         $this->transformer->reverseTransform($input);
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/BaseDateTimeTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/BaseDateTimeTransformerTest.php
index 385accd7f369..283dd4a81d1b 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/BaseDateTimeTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/BaseDateTimeTransformerTest.php
@@ -21,7 +21,7 @@ class BaseDateTimeTransformerTest extends TestCase
      */
     public function testConstructFailsIfInputTimezoneIsInvalid()
     {
-        $this->getMockBuilder('Symfony\Component\Form\Extension\Core\DataTransformer\BaseDateTimeTransformer')->setConstructorArgs(array('this_timezone_does_not_exist'))->getMock();
+        $this->getMockBuilder('Symfony\Component\Form\Extension\Core\DataTransformer\BaseDateTimeTransformer')->setConstructorArgs(['this_timezone_does_not_exist'])->getMock();
     }
 
     /**
@@ -30,6 +30,6 @@ public function testConstructFailsIfInputTimezoneIsInvalid()
      */
     public function testConstructFailsIfOutputTimezoneIsInvalid()
     {
-        $this->getMockBuilder('Symfony\Component\Form\Extension\Core\DataTransformer\BaseDateTimeTransformer')->setConstructorArgs(array(null, 'that_timezone_does_not_exist'))->getMock();
+        $this->getMockBuilder('Symfony\Component\Form\Extension\Core\DataTransformer\BaseDateTimeTransformer')->setConstructorArgs([null, 'that_timezone_does_not_exist'])->getMock();
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ChoiceToValueTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ChoiceToValueTransformerTest.php
index cf5dbaa6af7d..da41a8972951 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ChoiceToValueTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ChoiceToValueTransformerTest.php
@@ -22,8 +22,8 @@ class ChoiceToValueTransformerTest extends TestCase
 
     protected function setUp()
     {
-        $list = new ArrayChoiceList(array('', false, 'X', true));
-        $listWithNull = new ArrayChoiceList(array('', false, 'X', null));
+        $list = new ArrayChoiceList(['', false, 'X', true]);
+        $listWithNull = new ArrayChoiceList(['', false, 'X', null]);
 
         $this->transformer = new ChoiceToValueTransformer($list);
         $this->transformerWithNull = new ChoiceToValueTransformer($listWithNull);
@@ -37,13 +37,13 @@ protected function tearDown()
 
     public function transformProvider()
     {
-        return array(
+        return [
             // more extensive test set can be found in FormUtilTest
-            array('', '', '', '0'),
-            array(false, '0', false, '1'),
-            array('X', 'X', 'X', '2'),
-            array(true, '1', null, '3'),
-        );
+            ['', '', '', '0'],
+            [false, '0', false, '1'],
+            ['X', 'X', 'X', '2'],
+            [true, '1', null, '3'],
+        ];
     }
 
     /**
@@ -57,14 +57,14 @@ public function testTransform($in, $out, $inWithNull, $outWithNull)
 
     public function reverseTransformProvider()
     {
-        return array(
+        return [
             // values are expected to be valid choice keys already and stay
             // the same
-            array('', '', '0', ''),
-            array('0', false, '1', false),
-            array('X', 'X', '2', 'X'),
-            array('1', true, '3', null),
-        );
+            ['', '', '0', ''],
+            ['0', false, '1', false],
+            ['X', 'X', '2', 'X'],
+            ['1', true, '3', null],
+        ];
     }
 
     /**
@@ -78,12 +78,12 @@ public function testReverseTransform($in, $out, $inWithNull, $outWithNull)
 
     public function reverseTransformExpectsStringOrNullProvider()
     {
-        return array(
-            array(0),
-            array(true),
-            array(false),
-            array(array()),
-        );
+        return [
+            [0],
+            [true],
+            [false],
+            [[]],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ChoicesToValuesTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ChoicesToValuesTransformerTest.php
index aa4936f82263..9e7a666ba8b2 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ChoicesToValuesTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ChoicesToValuesTransformerTest.php
@@ -22,8 +22,8 @@ class ChoicesToValuesTransformerTest extends TestCase
 
     protected function setUp()
     {
-        $list = new ArrayChoiceList(array('', false, 'X'));
-        $listWithNull = new ArrayChoiceList(array('', false, 'X', null));
+        $list = new ArrayChoiceList(['', false, 'X']);
+        $listWithNull = new ArrayChoiceList(['', false, 'X', null]);
 
         $this->transformer = new ChoicesToValuesTransformer($list);
         $this->transformerWithNull = new ChoicesToValuesTransformer($listWithNull);
@@ -37,20 +37,20 @@ protected function tearDown()
 
     public function testTransform()
     {
-        $in = array('', false, 'X');
-        $out = array('', '0', 'X');
+        $in = ['', false, 'X'];
+        $out = ['', '0', 'X'];
 
         $this->assertSame($out, $this->transformer->transform($in));
 
         $in[] = null;
-        $outWithNull = array('0', '1', '2', '3');
+        $outWithNull = ['0', '1', '2', '3'];
 
         $this->assertSame($outWithNull, $this->transformerWithNull->transform($in));
     }
 
     public function testTransformNull()
     {
-        $this->assertSame(array(), $this->transformer->transform(null));
+        $this->assertSame([], $this->transformer->transform(null));
     }
 
     /**
@@ -64,12 +64,12 @@ public function testTransformExpectsArray()
     public function testReverseTransform()
     {
         // values are expected to be valid choices and stay the same
-        $in = array('', '0', 'X');
-        $out = array('', false, 'X');
+        $in = ['', '0', 'X'];
+        $out = ['', false, 'X'];
 
         $this->assertSame($out, $this->transformer->reverseTransform($in));
         // values are expected to be valid choices and stay the same
-        $inWithNull = array('0', '1', '2', '3');
+        $inWithNull = ['0', '1', '2', '3'];
         $out[] = null;
 
         $this->assertSame($out, $this->transformerWithNull->reverseTransform($inWithNull));
@@ -77,8 +77,8 @@ public function testReverseTransform()
 
     public function testReverseTransformNull()
     {
-        $this->assertSame(array(), $this->transformer->reverseTransform(null));
-        $this->assertSame(array(), $this->transformerWithNull->reverseTransform(null));
+        $this->assertSame([], $this->transformer->reverseTransform(null));
+        $this->assertSame([], $this->transformerWithNull->reverseTransform(null));
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DataTransformerChainTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DataTransformerChainTest.php
index 16302b348369..f62d3c52110f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DataTransformerChainTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DataTransformerChainTest.php
@@ -29,7 +29,7 @@ public function testTransform()
             ->with($this->identicalTo('bar'))
             ->will($this->returnValue('baz'));
 
-        $chain = new DataTransformerChain(array($transformer1, $transformer2));
+        $chain = new DataTransformerChain([$transformer1, $transformer2]);
 
         $this->assertEquals('baz', $chain->transform('foo'));
     }
@@ -47,7 +47,7 @@ public function testReverseTransform()
             ->with($this->identicalTo('bar'))
             ->will($this->returnValue('baz'));
 
-        $chain = new DataTransformerChain(array($transformer1, $transformer2));
+        $chain = new DataTransformerChain([$transformer1, $transformer2]);
 
         $this->assertEquals('baz', $chain->reverseTransform('foo'));
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateIntervalToArrayTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateIntervalToArrayTransformerTest.php
index a75fe1145c57..ead142709d75 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateIntervalToArrayTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateIntervalToArrayTransformerTest.php
@@ -24,7 +24,7 @@ public function testTransform()
     {
         $transformer = new DateIntervalToArrayTransformer();
         $input = new \DateInterval('P1Y2M3DT4H5M6S');
-        $output = array(
+        $output = [
             'years' => '1',
             'months' => '2',
             'days' => '3',
@@ -32,14 +32,14 @@ public function testTransform()
             'minutes' => '5',
             'seconds' => '6',
             'invert' => false,
-        );
+        ];
         $this->assertSame($output, $transformer->transform($input));
     }
 
     public function testTransformEmpty()
     {
         $transformer = new DateIntervalToArrayTransformer();
-        $output = array(
+        $output = [
             'years' => '',
             'months' => '',
             'days' => '',
@@ -47,43 +47,43 @@ public function testTransformEmpty()
             'minutes' => '',
             'seconds' => '',
             'invert' => false,
-        );
+        ];
         $this->assertSame($output, $transformer->transform(null));
     }
 
     public function testTransformEmptyWithFields()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('years', 'weeks', 'minutes', 'seconds'));
-        $output = array(
+        $transformer = new DateIntervalToArrayTransformer(['years', 'weeks', 'minutes', 'seconds']);
+        $output = [
             'years' => '',
             'weeks' => '',
             'minutes' => '',
             'seconds' => '',
-        );
+        ];
         $this->assertSame($output, $transformer->transform(null));
     }
 
     public function testTransformWithFields()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('years', 'minutes', 'seconds'));
+        $transformer = new DateIntervalToArrayTransformer(['years', 'minutes', 'seconds']);
         $input = new \DateInterval('P1Y2M3DT4H5M6S');
-        $output = array(
+        $output = [
             'years' => '1',
             'minutes' => '5',
             'seconds' => '6',
-        );
+        ];
         $this->assertSame($output, $transformer->transform($input));
     }
 
     public function testTransformWithWeek()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('weeks', 'minutes', 'seconds'));
+        $transformer = new DateIntervalToArrayTransformer(['weeks', 'minutes', 'seconds']);
         $input = new \DateInterval('P1Y2M3WT4H5M6S');
-        $output = array(
+        $output = [
             'weeks' => '3',
             'minutes' => '5',
             'seconds' => '6',
-        );
+        ];
         $input = $transformer->transform($input);
         ksort($input);
         ksort($output);
@@ -92,13 +92,13 @@ public function testTransformWithWeek()
 
     public function testTransformWithZeroWeek()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('weeks', 'minutes', 'seconds'));
+        $transformer = new DateIntervalToArrayTransformer(['weeks', 'minutes', 'seconds']);
         $input = new \DateInterval('P1Y2M0WT4H5M6S');
-        $output = array(
+        $output = [
             'weeks' => '0',
             'minutes' => '5',
             'seconds' => '6',
-        );
+        ];
         $input = $transformer->transform($input);
         ksort($input);
         ksort($output);
@@ -107,13 +107,13 @@ public function testTransformWithZeroWeek()
 
     public function testTransformDaysToWeeks()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('weeks', 'minutes', 'seconds'));
+        $transformer = new DateIntervalToArrayTransformer(['weeks', 'minutes', 'seconds']);
         $input = new \DateInterval('P1Y2M23DT4H5M6S');
-        $output = array(
+        $output = [
             'weeks' => '3',
             'minutes' => '5',
             'seconds' => '6',
-        );
+        ];
         $input = $transformer->transform($input);
         ksort($input);
         ksort($output);
@@ -122,25 +122,25 @@ public function testTransformDaysToWeeks()
 
     public function testTransformDaysNotOverflowingToWeeks()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('days', 'minutes', 'seconds'));
+        $transformer = new DateIntervalToArrayTransformer(['days', 'minutes', 'seconds']);
         $input = new \DateInterval('P1Y2M23DT4H5M6S');
-        $output = array(
+        $output = [
             'days' => '23',
             'minutes' => '5',
             'seconds' => '6',
-        );
+        ];
         $this->assertSame($output, $transformer->transform($input));
     }
 
     public function testTransformWithInvert()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('years', 'invert'));
+        $transformer = new DateIntervalToArrayTransformer(['years', 'invert']);
         $input = new \DateInterval('P1Y');
         $input->invert = 1;
-        $output = array(
+        $output = [
             'years' => '1',
             'invert' => true,
-        );
+        ];
         $this->assertSame($output, $transformer->transform($input));
     }
 
@@ -148,7 +148,7 @@ public function testTransformWithPadding()
     {
         $transformer = new DateIntervalToArrayTransformer(null, true);
         $input = new \DateInterval('P1Y2M3DT4H5M6S');
-        $output = array(
+        $output = [
             'years' => '01',
             'months' => '02',
             'days' => '03',
@@ -156,19 +156,19 @@ public function testTransformWithPadding()
             'minutes' => '05',
             'seconds' => '06',
             'invert' => false,
-        );
+        ];
         $this->assertSame($output, $transformer->transform($input));
     }
 
     public function testTransformWithFieldsAndPadding()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('years', 'minutes', 'seconds'), true);
+        $transformer = new DateIntervalToArrayTransformer(['years', 'minutes', 'seconds'], true);
         $input = new \DateInterval('P1Y2M3DT4H5M6S');
-        $output = array(
+        $output = [
             'years' => '01',
             'minutes' => '05',
             'seconds' => '06',
-        );
+        ];
         $this->assertSame($output, $transformer->transform($input));
     }
 
@@ -183,19 +183,19 @@ public function testReverseTransformRequiresDateTime()
     public function testReverseTransformWithUnsetFields()
     {
         $transformer = new DateIntervalToArrayTransformer();
-        $input = array('years' => '1');
+        $input = ['years' => '1'];
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}(TransformationFailedException::class);
         $transformer->reverseTransform($input);
     }
 
     public function testReverseTransformWithEmptyFields()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('years', 'minutes', 'seconds'));
-        $input = array(
+        $transformer = new DateIntervalToArrayTransformer(['years', 'minutes', 'seconds']);
+        $input = [
             'years' => '1',
             'minutes' => '',
             'seconds' => '6',
-        );
+        ];
         if (method_exists($this, 'expectException')) {
             $this->expectException(TransformationFailedException::class);
             $this->expectExceptionMessage('This amount of "minutes" is invalid');
@@ -207,10 +207,10 @@ public function testReverseTransformWithEmptyFields()
 
     public function testReverseTransformWithWrongInvertType()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('invert'));
-        $input = array(
+        $transformer = new DateIntervalToArrayTransformer(['invert']);
+        $input = [
             'invert' => '1',
-        );
+        ];
         if (method_exists($this, 'expectException')) {
             $this->expectException(TransformationFailedException::class);
             $this->expectExceptionMessage('The value of "invert" must be boolean');
@@ -223,7 +223,7 @@ public function testReverseTransformWithWrongInvertType()
     public function testReverseTransform()
     {
         $transformer = new DateIntervalToArrayTransformer();
-        $input = array(
+        $input = [
             'years' => '1',
             'months' => '2',
             'days' => '3',
@@ -231,7 +231,7 @@ public function testReverseTransform()
             'minutes' => '5',
             'seconds' => '6',
             'invert' => false,
-        );
+        ];
         $output = new \DateInterval('P01Y02M03DT04H05M06S');
         $this->assertDateIntervalEquals($output, $transformer->reverseTransform($input));
     }
@@ -239,28 +239,28 @@ public function testReverseTransform()
     public function testReverseTransformWithWeek()
     {
         $transformer = new DateIntervalToArrayTransformer(
-            array('years', 'months', 'weeks', 'hours', 'minutes', 'seconds')
+            ['years', 'months', 'weeks', 'hours', 'minutes', 'seconds']
         );
-        $input = array(
+        $input = [
             'years' => '1',
             'months' => '2',
             'weeks' => '3',
             'hours' => '4',
             'minutes' => '5',
             'seconds' => '6',
-        );
+        ];
         $output = new \DateInterval('P1Y2M21DT4H5M6S');
         $this->assertDateIntervalEquals($output, $transformer->reverseTransform($input));
     }
 
     public function testReverseTransformWithFields()
     {
-        $transformer = new DateIntervalToArrayTransformer(array('years', 'minutes', 'seconds'));
-        $input = array(
+        $transformer = new DateIntervalToArrayTransformer(['years', 'minutes', 'seconds']);
+        $input = [
             'years' => '1',
             'minutes' => '5',
             'seconds' => '6',
-        );
+        ];
         $output = new \DateInterval('P1Y0M0DT0H5M6S');
         $this->assertDateIntervalEquals($output, $transformer->reverseTransform($input));
     }
@@ -268,17 +268,17 @@ public function testReverseTransformWithFields()
     public function testBothTransformsWithWeek()
     {
         $transformer = new DateIntervalToArrayTransformer(
-            array('years', 'months', 'weeks', 'hours', 'minutes', 'seconds')
+            ['years', 'months', 'weeks', 'hours', 'minutes', 'seconds']
         );
         $interval = new \DateInterval('P1Y2M21DT4H5M6S');
-        $array = array(
+        $array = [
             'years' => '1',
             'months' => '2',
             'weeks' => '3',
             'hours' => '4',
             'minutes' => '5',
             'seconds' => '6',
-        );
+        ];
         $input = $transformer->transform($interval);
         ksort($input);
         ksort($array);
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateIntervalToStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateIntervalToStringTransformerTest.php
index 389e0c161d04..84b037838c65 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateIntervalToStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateIntervalToStringTransformerTest.php
@@ -22,36 +22,36 @@ class DateIntervalToStringTransformerTest extends DateIntervalTestCase
 {
     public function dataProviderISO()
     {
-        $data = array(
-            array('P%YY%MM%DDT%HH%IM%SS', 'P00Y00M00DT00H00M00S', 'PT0S'),
-            array('P%yY%mM%dDT%hH%iM%sS', 'P0Y0M0DT0H0M0S', 'PT0S'),
-            array('P%yY%mM%dDT%hH%iM%sS', 'P10Y2M3DT16H5M6S', 'P10Y2M3DT16H5M6S'),
-            array('P%yY%mM%dDT%hH%iM', 'P10Y2M3DT16H5M', 'P10Y2M3DT16H5M'),
-            array('P%yY%mM%dDT%hH', 'P10Y2M3DT16H', 'P10Y2M3DT16H'),
-            array('P%yY%mM%dD', 'P10Y2M3D', 'P10Y2M3DT0H'),
-        );
+        $data = [
+            ['P%YY%MM%DDT%HH%IM%SS', 'P00Y00M00DT00H00M00S', 'PT0S'],
+            ['P%yY%mM%dDT%hH%iM%sS', 'P0Y0M0DT0H0M0S', 'PT0S'],
+            ['P%yY%mM%dDT%hH%iM%sS', 'P10Y2M3DT16H5M6S', 'P10Y2M3DT16H5M6S'],
+            ['P%yY%mM%dDT%hH%iM', 'P10Y2M3DT16H5M', 'P10Y2M3DT16H5M'],
+            ['P%yY%mM%dDT%hH', 'P10Y2M3DT16H', 'P10Y2M3DT16H'],
+            ['P%yY%mM%dD', 'P10Y2M3D', 'P10Y2M3DT0H'],
+        ];
 
         return $data;
     }
 
     public function dataProviderDate()
     {
-        $data = array(
-            array(
+        $data = [
+            [
                 '%y years %m months %d days %h hours %i minutes %s seconds',
                 '10 years 2 months 3 days 16 hours 5 minutes 6 seconds',
                 'P10Y2M3DT16H5M6S',
-            ),
-            array(
+            ],
+            [
                 '%y years %m months %d days %h hours %i minutes',
                 '10 years 2 months 3 days 16 hours 5 minutes',
                 'P10Y2M3DT16H5M',
-            ),
-            array('%y years %m months %d days %h hours', '10 years 2 months 3 days 16 hours', 'P10Y2M3DT16H'),
-            array('%y years %m months %d days', '10 years 2 months 3 days', 'P10Y2M3D'),
-            array('%y years %m months', '10 years 2 months', 'P10Y2M'),
-            array('%y year', '1 year', 'P1Y'),
-        );
+            ],
+            ['%y years %m months %d days %h hours', '10 years 2 months 3 days 16 hours', 'P10Y2M3DT16H'],
+            ['%y years %m months %d days', '10 years 2 months 3 days', 'P10Y2M3D'],
+            ['%y years %m months', '10 years 2 months', 'P10Y2M'],
+            ['%y year', '1 year', 'P1Y'],
+        ];
 
         return $data;
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToArrayTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToArrayTransformerTest.php
index e9a0efb3a807..2669d3d4af42 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToArrayTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToArrayTransformerTest.php
@@ -22,14 +22,14 @@ public function testTransform()
 
         $input = new \DateTime('2010-02-03 04:05:06 UTC');
 
-        $output = array(
+        $output = [
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        );
+        ];
 
         $this->assertSame($output, $transformer->transform($input));
     }
@@ -38,43 +38,43 @@ public function testTransformEmpty()
     {
         $transformer = new DateTimeToArrayTransformer();
 
-        $output = array(
+        $output = [
             'year' => '',
             'month' => '',
             'day' => '',
             'hour' => '',
             'minute' => '',
             'second' => '',
-        );
+        ];
 
         $this->assertSame($output, $transformer->transform(null));
     }
 
     public function testTransformEmptyWithFields()
     {
-        $transformer = new DateTimeToArrayTransformer(null, null, array('year', 'minute', 'second'));
+        $transformer = new DateTimeToArrayTransformer(null, null, ['year', 'minute', 'second']);
 
-        $output = array(
+        $output = [
             'year' => '',
             'minute' => '',
             'second' => '',
-        );
+        ];
 
         $this->assertSame($output, $transformer->transform(null));
     }
 
     public function testTransformWithFields()
     {
-        $transformer = new DateTimeToArrayTransformer('UTC', 'UTC', array('year', 'month', 'minute', 'second'));
+        $transformer = new DateTimeToArrayTransformer('UTC', 'UTC', ['year', 'month', 'minute', 'second']);
 
         $input = new \DateTime('2010-02-03 04:05:06 UTC');
 
-        $output = array(
+        $output = [
             'year' => '2010',
             'month' => '2',
             'minute' => '5',
             'second' => '6',
-        );
+        ];
 
         $this->assertSame($output, $transformer->transform($input));
     }
@@ -85,14 +85,14 @@ public function testTransformWithPadding()
 
         $input = new \DateTime('2010-02-03 04:05:06 UTC');
 
-        $output = array(
+        $output = [
             'year' => '2010',
             'month' => '02',
             'day' => '03',
             'hour' => '04',
             'minute' => '05',
             'second' => '06',
-        );
+        ];
 
         $this->assertSame($output, $transformer->transform($input));
     }
@@ -105,14 +105,14 @@ public function testTransformDifferentTimezones()
 
         $dateTime = new \DateTime('2010-02-03 04:05:06 America/New_York');
         $dateTime->setTimezone(new \DateTimeZone('Asia/Hong_Kong'));
-        $output = array(
+        $output = [
             'year' => (string) (int) $dateTime->format('Y'),
             'month' => (string) (int) $dateTime->format('m'),
             'day' => (string) (int) $dateTime->format('d'),
             'hour' => (string) (int) $dateTime->format('H'),
             'minute' => (string) (int) $dateTime->format('i'),
             'second' => (string) (int) $dateTime->format('s'),
-        );
+        ];
 
         $this->assertSame($output, $transformer->transform($input));
     }
@@ -125,14 +125,14 @@ public function testTransformDateTimeImmutable()
 
         $dateTime = new \DateTimeImmutable('2010-02-03 04:05:06 America/New_York');
         $dateTime = $dateTime->setTimezone(new \DateTimeZone('Asia/Hong_Kong'));
-        $output = array(
+        $output = [
             'year' => (string) (int) $dateTime->format('Y'),
             'month' => (string) (int) $dateTime->format('m'),
             'day' => (string) (int) $dateTime->format('d'),
             'hour' => (string) (int) $dateTime->format('H'),
             'minute' => (string) (int) $dateTime->format('i'),
             'second' => (string) (int) $dateTime->format('s'),
-        );
+        ];
 
         $this->assertSame($output, $transformer->transform($input));
     }
@@ -150,14 +150,14 @@ public function testReverseTransform()
     {
         $transformer = new DateTimeToArrayTransformer('UTC', 'UTC');
 
-        $input = array(
+        $input = [
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        );
+        ];
 
         $output = new \DateTime('2010-02-03 04:05:06 UTC');
 
@@ -168,14 +168,14 @@ public function testReverseTransformWithSomeZero()
     {
         $transformer = new DateTimeToArrayTransformer('UTC', 'UTC');
 
-        $input = array(
+        $input = [
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '0',
             'second' => '0',
-        );
+        ];
 
         $output = new \DateTime('2010-02-03 04:00:00 UTC');
 
@@ -186,27 +186,27 @@ public function testReverseTransformCompletelyEmpty()
     {
         $transformer = new DateTimeToArrayTransformer();
 
-        $input = array(
+        $input = [
             'year' => '',
             'month' => '',
             'day' => '',
             'hour' => '',
             'minute' => '',
             'second' => '',
-        );
+        ];
 
         $this->assertNull($transformer->reverseTransform($input));
     }
 
     public function testReverseTransformCompletelyEmptySubsetOfFields()
     {
-        $transformer = new DateTimeToArrayTransformer(null, null, array('year', 'month', 'day'));
+        $transformer = new DateTimeToArrayTransformer(null, null, ['year', 'month', 'day']);
 
-        $input = array(
+        $input = [
             'year' => '',
             'month' => '',
             'day' => '',
-        );
+        ];
 
         $this->assertNull($transformer->reverseTransform($input));
     }
@@ -217,13 +217,13 @@ public function testReverseTransformCompletelyEmptySubsetOfFields()
     public function testReverseTransformPartiallyEmptyYear()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -232,13 +232,13 @@ public function testReverseTransformPartiallyEmptyYear()
     public function testReverseTransformPartiallyEmptyMonth()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -247,13 +247,13 @@ public function testReverseTransformPartiallyEmptyMonth()
     public function testReverseTransformPartiallyEmptyDay()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -262,13 +262,13 @@ public function testReverseTransformPartiallyEmptyDay()
     public function testReverseTransformPartiallyEmptyHour()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -277,13 +277,13 @@ public function testReverseTransformPartiallyEmptyHour()
     public function testReverseTransformPartiallyEmptyMinute()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -292,13 +292,13 @@ public function testReverseTransformPartiallyEmptyMinute()
     public function testReverseTransformPartiallyEmptySecond()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
-        ));
+        ]);
     }
 
     public function testReverseTransformNull()
@@ -312,14 +312,14 @@ public function testReverseTransformDifferentTimezones()
     {
         $transformer = new DateTimeToArrayTransformer('America/New_York', 'Asia/Hong_Kong');
 
-        $input = array(
+        $input = [
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        );
+        ];
 
         $output = new \DateTime('2010-02-03 04:05:06 Asia/Hong_Kong');
         $output->setTimezone(new \DateTimeZone('America/New_York'));
@@ -331,14 +331,14 @@ public function testReverseTransformToDifferentTimezone()
     {
         $transformer = new DateTimeToArrayTransformer('Asia/Hong_Kong', 'UTC');
 
-        $input = array(
+        $input = [
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        );
+        ];
 
         $output = new \DateTime('2010-02-03 04:05:06 UTC');
         $output->setTimezone(new \DateTimeZone('Asia/Hong_Kong'));
@@ -361,14 +361,14 @@ public function testReverseTransformRequiresArray()
     public function testReverseTransformWithNegativeYear()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '-1',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -377,14 +377,14 @@ public function testReverseTransformWithNegativeYear()
     public function testReverseTransformWithNegativeMonth()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '-1',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -393,14 +393,14 @@ public function testReverseTransformWithNegativeMonth()
     public function testReverseTransformWithNegativeDay()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '-1',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -409,14 +409,14 @@ public function testReverseTransformWithNegativeDay()
     public function testReverseTransformWithNegativeHour()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '-1',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -425,14 +425,14 @@ public function testReverseTransformWithNegativeHour()
     public function testReverseTransformWithNegativeMinute()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '-1',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -441,14 +441,14 @@ public function testReverseTransformWithNegativeMinute()
     public function testReverseTransformWithNegativeSecond()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '-1',
-        ));
+        ]);
     }
 
     /**
@@ -457,14 +457,14 @@ public function testReverseTransformWithNegativeSecond()
     public function testReverseTransformWithInvalidMonth()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '13',
             'day' => '3',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -473,14 +473,14 @@ public function testReverseTransformWithInvalidMonth()
     public function testReverseTransformWithInvalidDay()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '31',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -489,14 +489,14 @@ public function testReverseTransformWithInvalidDay()
     public function testReverseTransformWithStringDay()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => 'bazinga',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -505,14 +505,14 @@ public function testReverseTransformWithStringDay()
     public function testReverseTransformWithStringMonth()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => 'bazinga',
             'day' => '31',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -521,14 +521,14 @@ public function testReverseTransformWithStringMonth()
     public function testReverseTransformWithStringYear()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => 'bazinga',
             'month' => '2',
             'day' => '31',
             'hour' => '4',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -537,14 +537,14 @@ public function testReverseTransformWithStringYear()
     public function testReverseTransformWithEmptyStringHour()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '31',
             'hour' => '',
             'minute' => '5',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -553,14 +553,14 @@ public function testReverseTransformWithEmptyStringHour()
     public function testReverseTransformWithEmptyStringMinute()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '31',
             'hour' => '4',
             'minute' => '',
             'second' => '6',
-        ));
+        ]);
     }
 
     /**
@@ -569,13 +569,13 @@ public function testReverseTransformWithEmptyStringMinute()
     public function testReverseTransformWithEmptyStringSecond()
     {
         $transformer = new DateTimeToArrayTransformer();
-        $transformer->reverseTransform(array(
+        $transformer->reverseTransform([
             'year' => '2010',
             'month' => '2',
             'day' => '31',
             'hour' => '4',
             'minute' => '5',
             'second' => '',
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToHtml5LocalDateTimeTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToHtml5LocalDateTimeTransformerTest.php
index 6046022e4589..e66331aa284e 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToHtml5LocalDateTimeTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToHtml5LocalDateTimeTransformerTest.php
@@ -28,34 +28,34 @@ public static function assertEquals($expected, $actual, $message = '', $delta =
 
     public function transformProvider()
     {
-        return array(
-            array('UTC', 'UTC', '2010-02-03 04:05:06 UTC', '2010-02-03T04:05:06'),
-            array('UTC', 'UTC', null, ''),
-            array('America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:06 America/New_York', '2010-02-03T17:05:06'),
-            array('America/New_York', 'Asia/Hong_Kong', null, ''),
-            array('UTC', 'Asia/Hong_Kong', '2010-02-03 04:05:06 UTC', '2010-02-03T12:05:06'),
-  
10000
          array('America/New_York', 'UTC', '2010-02-03 04:05:06 America/New_York', '2010-02-03T09:05:06'),
-        );
+        return [
+            ['UTC', 'UTC', '2010-02-03 04:05:06 UTC', '2010-02-03T04:05:06'],
+            ['UTC', 'UTC', null, ''],
+            ['America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:06 America/New_York', '2010-02-03T17:05:06'],
+            ['America/New_York', 'Asia/Hong_Kong', null, ''],
+            ['UTC', 'Asia/Hong_Kong', '2010-02-03 04:05:06 UTC', '2010-02-03T12:05:06'],
+            ['America/New_York', 'UTC', '2010-02-03 04:05:06 America/New_York', '2010-02-03T09:05:06'],
+        ];
     }
 
     public function reverseTransformProvider()
     {
-        return array(
+        return [
             // format without seconds, as appears in some browsers
-            array('UTC', 'UTC', '2010-02-03 04:05:06 UTC', '2010-02-03T04:05:06'),
-            array('UTC', 'UTC', null, ''),
-            array('America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:06 America/New_York', '2010-02-03T17:05:06'),
-            array('America/New_York', 'Asia/Hong_Kong', null, ''),
-            array('UTC', 'Asia/Hong_Kong', '2010-02-03 04:05:06 UTC', '2010-02-03T12:05:06'),
-            array('America/New_York', 'UTC', '2010-02-03 04:05:06 America/New_York', '2010-02-03T09:05:06'),
-            array('UTC', 'UTC', '2010-02-03 04:05:00 UTC', '2010-02-03T04:05'),
-            array('America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:00 America/New_York', '2010-02-03T17:05'),
-            array('Europe/Amsterdam', 'Europe/Amsterdam', '2013-08-21 10:30:00 Europe/Amsterdam', '2013-08-21T10:30:00'),
-            array('UTC', 'UTC', '2018-09-15T10:00:00Z', '2018-09-15T10:00:00Z'),
-            array('Europe/Berlin', 'Europe/Berlin', '2018-09-15T10:00:00+02:00', '2018-09-15T10:00:00+02:00'),
-            array('Europe/Berlin', 'Europe/Berlin', '2018-09-15T10:00:00+0200', '2018-09-15T10:00:00+0200'),
-            array('UTC', 'UTC', '2018-10-03T10:00:00.000Z', '2018-10-03T10:00:00.000Z'),
-        );
+            ['UTC', 'UTC', '2010-02-03 04:05:06 UTC', '2010-02-03T04:05:06'],
+            ['UTC', 'UTC', null, ''],
+            ['America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:06 America/New_York', '2010-02-03T17:05:06'],
+            ['America/New_York', 'Asia/Hong_Kong', null, ''],
+            ['UTC', 'Asia/Hong_Kong', '2010-02-03 04:05:06 UTC', '2010-02-03T12:05:06'],
+            ['America/New_York', 'UTC', '2010-02-03 04:05:06 America/New_York', '2010-02-03T09:05:06'],
+            ['UTC', 'UTC', '2010-02-03 04:05:00 UTC', '2010-02-03T04:05'],
+            ['America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:00 America/New_York', '2010-02-03T17:05'],
+            ['Europe/Amsterdam', 'Europe/Amsterdam', '2013-08-21 10:30:00 Europe/Amsterdam', '2013-08-21T10:30:00'],
+            ['UTC', 'UTC', '2018-09-15T10:00:00Z', '2018-09-15T10:00:00Z'],
+            ['Europe/Berlin', 'Europe/Berlin', '2018-09-15T10:00:00+02:00', '2018-09-15T10:00:00+02:00'],
+            ['Europe/Berlin', 'Europe/Berlin', '2018-09-15T10:00:00+0200', '2018-09-15T10:00:00+0200'],
+            ['UTC', 'UTC', '2018-10-03T10:00:00.000Z', '2018-10-03T10:00:00.000Z'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToLocalizedStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToLocalizedStringTransformerTest.php
index 8e7ad393ebe7..8cf5986c130a 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToLocalizedStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToLocalizedStringTransformerTest.php
@@ -51,36 +51,36 @@ public static function assertEquals($expected, $actual, $message = '', $delta =
 
     public function dataProvider()
     {
-        return array(
-            array(\IntlDateFormatter::SHORT, null, null, '03.02.10, 04:05', '2010-02-03 04:05:00 UTC'),
-            array(\IntlDateFormatter::MEDIUM, null, null, '03.02.2010, 04:05', '2010-02-03 04:05:00 UTC'),
-            array(\IntlDateFormatter::LONG, null, null, '3. Februar 2010 um 04:05', '2010-02-03 04:05:00 UTC'),
-            array(\IntlDateFormatter::FULL, null, null, 'Mittwoch, 3. Februar 2010 um 04:05', '2010-02-03 04:05:00 UTC'),
-            array(\IntlDateFormatter::SHORT, \IntlDateFormatter::NONE, null, '03.02.10', '2010-02-03 00:00:00 UTC'),
-            array(\IntlDateFormatter::MEDIUM, \IntlDateFormatter::NONE, null, '03.02.2010', '2010-02-03 00:00:00 UTC'),
-            array(\IntlDateFormatter::LONG, \IntlDateFormatter::NONE, null, '3. Februar 2010', '2010-02-03 00:00:00 UTC'),
-            array(\IntlDateFormatter::FULL, \IntlDateFormatter::NONE, null, 'Mittwoch, 3. Februar 2010', '2010-02-03 00:00:00 UTC'),
-            array(null, \IntlDateFormatter::SHORT, null, '03.02.2010, 04:05', '2010-02-03 04:05:00 UTC'),
-            array(null, \IntlDateFormatter::MEDIUM, null, '03.02.2010, 04:05:06', '2010-02-03 04:05:06 UTC'),
-            array(null, \IntlDateFormatter::LONG, null, '03.02.2010, 04:05:06 UTC', '2010-02-03 04:05:06 UTC'),
-            array(null, \IntlDateFormatter::LONG, null, '03.02.2010, 04:05:06 UTC', '2010-02-03 04:05:06 GMT'),
+        return [
+            [\IntlDateFormatter::SHORT, null, null, '03.02.10, 04:05', '2010-02-03 04:05:00 UTC'],
+            [\IntlDateFormatter::MEDIUM, null, null, '03.02.2010, 04:05', '2010-02-03 04:05:00 UTC'],
+            [\IntlDateFormatter::LONG, null, null, '3. Februar 2010 um 04:05', '2010-02-03 04:05:00 UTC'],
+            [\IntlDateFormatter::FULL, null, null, 'Mittwoch, 3. Februar 2010 um 04:05', '2010-02-03 04:05:00 UTC'],
+            [\IntlDateFormatter::SHORT, \IntlDateFormatter::NONE, null, '03.02.10', '2010-02-03 00:00:00 UTC'],
+            [\IntlDateFormatter::MEDIUM, \IntlDateFormatter::NONE, null, '03.02.2010', '2010-02-03 00:00:00 UTC'],
+            [\IntlDateFormatter::LONG, \IntlDateFormatter::NONE, null, '3. Februar 2010', '2010-02-03 00:00:00 UTC'],
+            [\IntlDateFormatter::FULL, \IntlDateFormatter::NONE, null, 'Mittwoch, 3. Februar 2010', '2010-02-03 00:00:00 UTC'],
+            [null, \IntlDateFormatter::SHORT, null, '03.02.2010, 04:05', '2010-02-03 04:05:00 UTC'],
+            [null, \IntlDateFormatter::MEDIUM, null, '03.02.2010, 04:05:06', '2010-02-03 04:05:06 UTC'],
+            [null, \IntlDateFormatter::LONG, null, '03.02.2010, 04:05:06 UTC', '2010-02-03 04:05:06 UTC'],
+            [null, \IntlDateFormatter::LONG, null, '03.02.2010, 04:05:06 UTC', '2010-02-03 04:05:06 GMT'],
             // see below for extra test case for time format FULL
-            array(\IntlDateFormatter::NONE, \IntlDateFormatter::SHORT, null, '04:05', '1970-01-01 04:05:00 UTC'),
-            array(\IntlDateFormatter::NONE, \IntlDateFormatter::MEDIUM, null, '04:05:06', '1970-01-01 04:05:06 UTC'),
-            array(\IntlDateFormatter::NONE, \IntlDateFormatter::LONG, null, '04:05:06 UTC', '1970-01-01 04:05:06 GMT'),
-            array(\IntlDateFormatter::NONE, \IntlDateFormatter::LONG, null, '04:05:06 UTC', '1970-01-01 04:05:06 UTC'),
-            array(null, null, 'yyyy-MM-dd HH:mm:00', '2010-02-03 04:05:00', '2010-02-03 04:05:00 UTC'),
-            array(null, null, 'yyyy-MM-dd HH:mm', '2010-02-03 04:05', '2010-02-03 04:05:00 UTC'),
-            array(null, null, 'yyyy-MM-dd HH', '2010-02-03 04', '2010-02-03 04:00:00 UTC'),
-            array(null, null, 'yyyy-MM-dd', '2010-02-03', '2010-02-03 00:00:00 UTC'),
-            array(null, null, 'yyyy-MM', '2010-02', '2010-02-01 00:00:00 UTC'),
-            array(null, null, 'yyyy', '2010', '2010-01-01 00:00:00 UTC'),
-            array(null, null, 'dd-MM-yyyy', '03-02-2010', '2010-02-03 00:00:00 UTC'),
-            array(null, null, 'HH:mm:ss', '04:05:06', '1970-01-01 04:05:06 UTC'),
-            array(null, null, 'HH:mm:00', '04:05:00', '1970-01-01 04:05:00 UTC'),
-            array(null, null, 'HH:mm', '04:05', '1970-01-01 04:05:00 UTC'),
-            array(null, null, 'HH', '04', '1970-01-01 04:00:00 UTC'),
-        );
+            [\IntlDateFormatter::NONE, \IntlDateFormatter::SHORT, null, '04:05', '1970-01-01 04:05:00 UTC'],
+            [\IntlDateFormatter::NONE, \IntlDateFormatter::MEDIUM, null, '04:05:06', '1970-01-01 04:05:06 UTC'],
+            [\IntlDateFormatter::NONE, \IntlDateFormatter::LONG, null, '04:05:06 UTC', '1970-01-01 04:05:06 GMT'],
+            [\IntlDateFormatter::NONE, \IntlDateFormatter::LONG, null, '04:05:06 UTC', '1970-01-01 04:05:06 UTC'],
+            [null, null, 'yyyy-MM-dd HH:mm:00', '2010-02-03 04:05:00', '2010-02-03 04:05:00 UTC'],
+            [null, null, 'yyyy-MM-dd HH:mm', '2010-02-03 04:05', '2010-02-03 04:05:00 UTC'],
+            [null, null, 'yyyy-MM-dd HH', '2010-02-03 04', '2010-02-03 04:00:00 UTC'],
+            [null, null, 'yyyy-MM-dd', '2010-02-03', '2010-02-03 00:00:00 UTC'],
+            [null, null, 'yyyy-MM', '2010-02', '2010-02-01 00:00:00 UTC'],
+            [null, null, 'yyyy', '2010', '2010-01-01 00:00:00 UTC'],
+            [null, null, 'dd-MM-yyyy', '03-02-2010', '2010-02-03 00:00:00 UTC'],
+            [null, null, 'HH:mm:ss', '04:05:06', '1970-01-01 04:05:06 UTC'],
+            [null, null, 'HH:mm:00', '04:05:00', '1970-01-01 04:05:00 UTC'],
+            [null, null, 'HH:mm', '04:05', '1970-01-01 04:05:00 UTC'],
+            [null, null, 'HH', '04', '1970-01-01 04:00:00 UTC'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToRfc3339TransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToRfc3339TransformerTest.php
index 053cb628644a..2352ea6cc351 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToRfc3339TransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToRfc3339TransformerTest.php
@@ -45,14 +45,14 @@ public static function assertEquals($expected, $actual, $message = '', $delta =
 
     public function allProvider()
     {
-        return array(
-            array('UTC', 'UTC', '2010-02-03 04:05:06 UTC', '2010-02-03T04:05:06Z'),
-            array('UTC', 'UTC', null, ''),
-            array('America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:06 America/New_York', '2010-02-03T17:05:06+08:00'),
-            array('America/New_York', 'Asia/Hong_Kong', null, ''),
-            array('UTC', 'Asia/Hong_Kong', '2010-02-03 04:05:06 UTC', '2010-02-03T12:05:06+08:00'),
-            array('America/New_York', 'UTC', '2010-02-03 04:05:06 America/New_York', '2010-02-03T09:05:06Z'),
-        );
+        return [
+            ['UTC', 'UTC', '2010-02-03 04:05:06 UTC', '2010-02-03T04:05:06Z'],
+            ['UTC', 'UTC', null, ''],
+            ['America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:06 America/New_York', '2010-02-03T17:05:06+08:00'],
+            ['America/New_York', 'Asia/Hong_Kong', null, ''],
+            ['UTC', 'Asia/Hong_Kong', '2010-02-03 04:05:06 UTC', '2010-02-03T12:05:06+08:00'],
+            ['America/New_York', 'UTC', '2010-02-03 04:05:06 America/New_York', '2010-02-03T09:05:06Z'],
+        ];
     }
 
     public function transformProvider()
@@ -62,13 +62,13 @@ public function transformProvider()
 
     public function reverseTransformProvider()
     {
-        return array_merge($this->allProvider(), array(
+        return array_merge($this->allProvider(), [
             // format without seconds, as appears in some browsers
-            array('UTC', 'UTC', '2010-02-03 04:05:00 UTC', '2010-02-03T04:05Z'),
-            array('America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:00 America/New_York', '2010-02-03T17:05+08:00'),
-            array('Europe/Amsterdam', 'Europe/Amsterdam', '2013-08-21 10:30:00 Europe/Amsterdam', '2013-08-21T08:30:00Z'),
-            array('UTC', 'UTC', '2018-10-03T10:00:00.000Z', '2018-10-03T10:00:00.000Z'),
-        ));
+            ['UTC', 'UTC', '2010-02-03 04:05:00 UTC', '2010-02-03T04:05Z'],
+            ['America/New_York', 'Asia/Hong_Kong', '2010-02-03 04:05:00 America/New_York', '2010-02-03T17:05+08:00'],
+            ['Europe/Amsterdam', 'Europe/Amsterdam', '2013-08-21 10:30:00 Europe/Amsterdam', '2013-08-21T08:30:00Z'],
+            ['UTC', 'UTC', '2018-10-03T10:00:00.000Z', '2018-10-03T10:00:00.000Z'],
+        ]);
     }
 
     /**
@@ -146,13 +146,13 @@ public function testReverseTransformExpectsValidDateString($date)
 
     public function invalidDateStringProvider()
     {
-        return array(
-            'invalid month' => array('2010-2010-01'),
-            'invalid day' => array('2010-10-2010'),
-            'no date' => array('x'),
-            'cookie format' => array('Saturday, 01-May-2010 04:05:00 Z'),
-            'RFC 822 format' => array('Sat, 01 May 10 04:05:00 +0000'),
-            'RSS format' => array('Sat, 01 May 2010 04:05:00 +0000'),
-        );
+        return [
+            'invalid month' => ['2010-2010-01'],
+            'invalid day' => ['2010-10-2010'],
+            'no date' => ['x'],
+            'cookie format' => ['Saturday, 01-May-2010 04:05:00 Z'],
+            'RFC 822 format' => ['Sat, 01 May 10 04:05:00 +0000'],
+            'RSS format' => ['Sat, 01 May 2010 04:05:00 +0000'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php
index c4d04e0e0f5f..7619fcc473f6 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php
@@ -18,24 +18,24 @@ class DateTimeToStringTransformerTest extends TestCase
 {
     public function dataProvider()
     {
-        $data = array(
-            array('Y-m-d H:i:s', '2010-02-03 16:05:06', '2010-02-03 16:05:06 UTC'),
-            array('Y-m-d H:i:00', '2010-02-03 16:05:00', '2010-02-03 16:05:00 UTC'),
-            array('Y-m-d H:i', '2010-02-03 16:05', '2010-02-03 16:05:00 UTC'),
-            array('Y-m-d H', '2010-02-03 16', '2010-02-03 16:00:00 UTC'),
-            array('Y-m-d', '2010-02-03', '2010-02-03 00:00:00 UTC'),
-            array('Y-m', '2010-12', '2010-12-01 00:00:00 UTC'),
-            array('Y', '2010', '2010-01-01 00:00:00 UTC'),
-            array('d-m-Y', '03-02-2010', '2010-02-03 00:00:00 UTC'),
-            array('H:i:s', '16:05:06', '1970-01-01 16:05:06 UTC'),
-            array('H:i:00', '16:05:00', '1970-01-01 16:05:00 UTC'),
-            array('H:i', '16:05', '1970-01-01 16:05:00 UTC'),
-            array('H', '16', '1970-01-01 16:00:00 UTC'),
-            array('Y-z', '2010-33', '2010-02-03 00:00:00 UTC'),
+        $data = [
+            ['Y-m-d H:i:s', '2010-02-03 16:05:06', '2010-02-03 16:05:06 UTC'],
+            ['Y-m-d H:i:00', '2010-02-03 16:05:00', '2010-02-03 16:05:00 UTC'],
+            ['Y-m-d H:i', '2010-02-03 16:05', '2010-02-03 16:05:00 UTC'],
+            ['Y-m-d H', '2010-02-03 16', '2010-02-03 16:00:00 UTC'],
+            ['Y-m-d', '2010-02-03', '2010-02-03 00:00:00 UTC'],
+            ['Y-m', '2010-12', '2010-12-01 00:00:00 UTC'],
+            ['Y', '2010', '2010-01-01 00:00:00 UTC'],
+            ['d-m-Y', '03-02-2010', '2010-02-03 00:00:00 UTC'],
+            ['H:i:s', '16:05:06', '1970-01-01 16:05:06 UTC'],
+            ['H:i:00', '16:05:00', '1970-01-01 16:05:00 UTC'],
+            ['H:i', '16:05', '1970-01-01 16:05:00 UTC'],
+            ['H', '16', '1970-01-01 16:00:00 UTC'],
+            ['Y-z', '2010-33', '2010-02-03 00:00:00 UTC'],
 
             // different day representations
-            array('Y-m-j', '2010-02-3', '2010-02-03 00:00:00 UTC'),
-            array('z', '33', '1970-02-03 00:00:00 UTC'),
+            ['Y-m-j', '2010-02-3', '2010-02-03 00:00:00 UTC'],
+            ['z', '33', '1970-02-03 00:00:00 UTC'],
 
             // not bijective
             // this will not work as PHP will use actual date to replace missing info
@@ -45,23 +45,23 @@ public function dataProvider()
             //array('Y-m-l', '2010-02-Wednesday', '2010-02-03 00:00:00 UTC'),
 
             // different month representations
-            array('Y-n-d', '2010-2-03', '2010-02-03 00:00:00 UTC'),
-            array('Y-M-d', '2010-Feb-03', '2010-02-03 00:00:00 UTC'),
-            array('Y-F-d', '2010-February-03', '2010-02-03 00:00:00 UTC'),
+            ['Y-n-d', '2010-2-03', '2010-02-03 00:00:00 UTC'],
+            ['Y-M-d', '2010-Feb-03', '2010-02-03 00:00:00 UTC'],
+            ['Y-F-d', '2010-February-03', '2010-02-03 00:00:00 UTC'],
 
             // different year representations
-            array('y-m-d', '10-02-03', '2010-02-03 00:00:00 UTC'),
+            ['y-m-d', '10-02-03', '2010-02-03 00:00:00 UTC'],
 
             // different time representations
-            array('G:i:s', '16:05:06', '1970-01-01 16:05:06 UTC'),
-            array('g:i:s a', '4:05:06 pm', '1970-01-01 16:05:06 UTC'),
-            array('h:i:s a', '04:05:06 pm', '1970-01-01 16:05:06 UTC'),
+            ['G:i:s', '16:05:06', '1970-01-01 16:05:06 UTC'],
+            ['g:i:s a', '4:05:06 pm', '1970-01-01 16:05:06 UTC'],
+            ['h:i:s a', '04:05:06 pm', '1970-01-01 16:05:06 UTC'],
 
             // seconds since Unix
-            array('U', '1265213106', '2010-02-03 16:05:06 UTC'),
+            ['U', '1265213106', '2010-02-03 16:05:06 UTC'],
 
-            array('Y-z', '2010-33', '2010-02-03 00:00:00 UTC'),
-        );
+            ['Y-z', '2010-33', '2010-02-03 00:00:00 UTC'],
+        ];
 
         return $data;
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeZoneToStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeZoneToStringTransformerTest.php
index e6560d7558f3..6aefe3cab53f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeZoneToStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeZoneToStringTransformerTest.php
@@ -34,8 +34,8 @@ public function testMultiple()
         $this->assertNull($transformer->transform(null));
         $this->assertNull($transformer->reverseTransform(null));
 
-        $this->assertSame(array('Europe/Amsterdam'), $transformer->transform(array(new \DateTimeZone('Europe/Amsterdam'))));
-        $this->assertEquals(array(new \DateTimeZone('Europe/Amsterdam')), $transformer->reverseTransform(array('Europe/Amsterdam')));
+        $this->assertSame(['Europe/Amsterdam'], $transformer->transform([new \DateTimeZone('Europe/Amsterdam')]));
+        $this->assertEquals([new \DateTimeZone('Europe/Amsterdam')], $transformer->reverseTransform(['Europe/Amsterdam']));
     }
 
     /**
@@ -51,6 +51,6 @@ public function testInvalidTimezone()
      */
     public function testUnknownTimezone()
     {
-        (new DateTimeZoneToStringTransformer(true))->reverseTransform(array('Foo/Bar'));
+        (new DateTimeZoneToStringTransformer(true))->reverseTransform(['Foo/Bar']);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformerTest.php
index fe1f7d31792f..193aba91ab3b 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformerTest.php
@@ -26,53 +26,53 @@ protected function setUp()
 
     public function transformWithRoundingProvider()
     {
-        return array(
+        return [
             // towards positive infinity (1.6 -> 2, -1.6 -> -1)
-            array(1234.5, '1235', IntegerToLocalizedStringTransformer::ROUND_CEILING),
-            array(1234.4, '1235', IntegerToLocalizedStringTransformer::ROUND_CEILING),
-            array(-1234.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_CEILING),
-            array(-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_CEILING),
+            [1234.5, '1235', IntegerToLocalizedStringTransformer::ROUND_CEILING],
+            [1234.4, '1235', IntegerToLocalizedStringTransformer::ROUND_CEILING],
+            [-1234.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_CEILING],
+            [-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_CEILING],
             // towards negative infinity (1.6 -> 1, -1.6 -> -2)
-            array(1234.5, '1234', IntegerToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_FLOOR),
-            array(-1234.5, '-1235', IntegerToLocalizedStringTransformer::ROUND_FLOOR),
-            array(-1234.4, '-1235', IntegerToLocalizedStringTransformer::ROUND_FLOOR),
+            [1234.5, '1234', IntegerToLocalizedStringTransformer::ROUND_FLOOR],
+            [1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_FLOOR],
+            [-1234.5, '-1235', IntegerToLocalizedStringTransformer::ROUND_FLOOR],
+            [-1234.4, '-1235', IntegerToLocalizedStringTransformer::ROUND_FLOOR],
             // away from zero (1.6 -> 2, -1.6 -> 2)
-            array(1234.5, '1235', IntegerToLocalizedStringTransformer::ROUND_UP),
-            array(1234.4, '1235', IntegerToLocalizedStringTransformer::ROUND_UP),
-            array(-1234.5, '-1235', IntegerToLocalizedStringTransformer::ROUND_UP),
-            array(-1234.4, '-1235', IntegerToLocalizedStringTransformer::ROUND_UP),
+            [1234.5, '1235', IntegerToLocalizedStringTransformer::ROUND_UP],
+            [1234.4, '1235', IntegerToLocalizedStringTransformer::ROUND_UP],
+            [-1234.5, '-1235', IntegerToLocalizedStringTransformer::ROUND_UP],
+            [-1234.4, '-1235', IntegerToLocalizedStringTransformer::ROUND_UP],
             // towards zero (1.6 -> 1, -1.6 -> -1)
-            array(1234.5, '1234', IntegerToLocalizedStringTransformer::ROUND_DOWN),
-            array(1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_DOWN),
-            array(-1234.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_DOWN),
-            array(-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_DOWN),
+            [1234.5, '1234', IntegerToLocalizedStringTransformer::ROUND_DOWN],
+            [1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_DOWN],
+            [-1234.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_DOWN],
+            [-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_DOWN],
             // round halves (.5) to the next even number
-            array(1234.6, '1235', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1234.5, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1233.5, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1232.5, '1232', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(-1234.6, '-1235', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(-1234.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(-1233.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(-1232.5, '-1232', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
+            [1234.6, '1235', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1234.5, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1233.5, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1232.5, '1232', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [-1234.6, '-1235', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [-1234.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [-1233.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [-1232.5, '-1232', IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
             // round halves (.5) away from zero
-            array(1234.6, '1235', IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1234.5, '1235', IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(-1234.6, '-1235', IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(-1234.5, '-1235', IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
+            [1234.6, '1235', IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1234.5, '1235', IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            [-1234.6, '-1235', IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            [-1234.5, '-1235', IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            [-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
             // round halves (.5) towards zero
-            array(1234.6, '1235', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1234.5, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(-1234.6, '-1235', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(-1234.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-        );
+            [1234.6, '1235', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1234.5, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1234.4, '1234', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [-1234.6, '-1235', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [-1234.5, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [-1234.4, '-1234', IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+        ];
     }
 
     /**
@@ -124,53 +124,53 @@ public function testReverseTransformWithGrouping()
 
     public function reverseTransformWithRoundingProvider()
     {
-        return array(
+        return [
             // towards positive infinity (1.6 -> 2, -1.6 -> -1)
-            array('1234,5', 1235, IntegerToLocalizedStringTransformer::ROUND_CEILING),
-            array('1234,4', 1235, IntegerToLocalizedStringTransformer::ROUND_CEILING),
-            array('-1234,5', -1234, IntegerToLocalizedStringTransformer::ROUND_CEILING),
-            array('-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_CEILING),
+            ['1234,5', 1235, IntegerToLocalizedStringTransformer::ROUND_CEILING],
+            ['1234,4', 1235, IntegerToLocalizedStringTransformer::ROUND_CEILING],
+            ['-1234,5', -1234, IntegerToLocalizedStringTransformer::ROUND_CEILING],
+            ['-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_CEILING],
             // towards negative infinity (1.6 -> 1, -1.6 -> -2)
-            array('1234,5', 1234, IntegerToLocalizedStringTransformer::ROUND_FLOOR),
-            array('1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_FLOOR),
-            array('-1234,5', -1235, IntegerToLocalizedStringTransformer::ROUND_FLOOR),
-            array('-1234,4', -1235, IntegerToLocalizedStringTransformer::ROUND_FLOOR),
+            ['1234,5', 1234, IntegerToLocalizedStringTransformer::ROUND_FLOOR],
+            ['1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_FLOOR],
+            ['-1234,5', -1235, IntegerToLocalizedStringTransformer::ROUND_FLOOR],
+            ['-1234,4', -1235, IntegerToLocalizedStringTransformer::ROUND_FLOOR],
             // away from zero (1.6 -> 2, -1.6 -> 2)
-            array('1234,5', 1235, IntegerToLocalizedStringTransformer::ROUND_UP),
-            array('1234,4', 1235, IntegerToLocalizedStringTransformer::ROUND_UP),
-            array('-1234,5', -1235, IntegerToLocalizedStringTransformer::ROUND_UP),
-            array('-1234,4', -1235, IntegerToLocalizedStringTransformer::ROUND_UP),
+            ['1234,5', 1235, IntegerToLocalizedStringTransformer::ROUND_UP],
+            ['1234,4', 1235, IntegerToLocalizedStringTransformer::ROUND_UP],
+            ['-1234,5', -1235, IntegerToLocalizedStringTransformer::ROUND_UP],
+            ['-1234,4', -1235, IntegerToLocalizedStringTransformer::ROUND_UP],
             // towards zero (1.6 -> 1, -1.6 -> -1)
-            array('1234,5', 1234, IntegerToLocalizedStringTransformer::ROUND_DOWN),
-            array('1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_DOWN),
-            array('-1234,5', -1234, IntegerToLocalizedStringTransformer::ROUND_DOWN),
-            array('-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_DOWN),
+            ['1234,5', 1234, IntegerToLocalizedStringTransformer::ROUND_DOWN],
+            ['1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_DOWN],
+            ['-1234,5', -1234, IntegerToLocalizedStringTransformer::ROUND_DOWN],
+            ['-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_DOWN],
             // round halves (.5) to the next even number
-            array('1234,6', 1235, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('1234,5', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('1233,5', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('1232,5', 1232, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('-1234,6', -1235, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('-1234,5', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('-1233,5', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array('-1232,5', -1232, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN),
+            ['1234,6', 1235, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['1234,5', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['1233,5', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['1232,5', 1232, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['-1234,6', -1235, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['-1234,5', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['-1233,5', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            ['-1232,5', -1232, IntegerToLocalizedStringTransformer::ROUND_HALF_EVEN],
             // round halves (.5) away from zero
-            array('1234,6', 1235, IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array('1234,5', 1235, IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array('1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array('-1234,6', -1235, IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array('-1234,5', -1235, IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
-            array('-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_UP),
+            ['1234,6', 1235, IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            ['1234,5', 1235, IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            ['1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            ['-1234,6', -1235, IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            ['-1234,5', -1235, IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
+            ['-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_UP],
             // round halves (.5) towards zero
-            array('1234,6', 1235, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array('1234,5', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array('1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array('-1234,6', -1235, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array('-1234,5', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array('-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN),
-        );
+            ['1234,6', 1235, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            ['1234,5', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            ['1234,4', 1234, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            ['-1234,6', -1235, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            ['-1234,5', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            ['-1234,4', -1234, IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/NumberToLocalizedStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/NumberToLocalizedStringTransformerTest.php
index 176d3a9a58f9..1f05af6128ca 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/NumberToLocalizedStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/NumberToLocalizedStringTransformerTest.php
@@ -26,15 +26,15 @@ protected function setUp()
 
     public function provideTransformations()
     {
-        return array(
-            array(null, '', 'de_AT'),
-            array(1, '1', 'de_AT'),
-            array(1.5, '1,5', 'de_AT'),
-            array(1234.5, '1234,5', 'de_AT'),
-            array(12345.912, '12345,912', 'de_AT'),
-            array(1234.5, '1234,5', 'ru'),
-            array(1234.5, '1234,5', 'fi'),
-        );
+        return [
+            [null, '', 'de_AT'],
+            [1, '1', 'de_AT'],
+            [1.5, '1,5', 'de_AT'],
+            [1234.5, '1234,5', 'de_AT'],
+            [12345.912, '12345,912', 'de_AT'],
+            [1234.5, '1234,5', 'ru'],
+            [1234.5, '1234,5', 'fi'],
+        ];
     }
 
     /**
@@ -54,13 +54,13 @@ public function testTransform($from, $to, $locale)
 
     public function provideTransformationsWithGrouping()
     {
-        return array(
-            array(1234.5, '1.234,5', 'de_DE'),
-            array(12345.912, '12.345,912', 'de_DE'),
-            array(1234.5, '1 234,5', 'fr'),
-            array(1234.5, '1 234,5', 'ru'),
-            array(1234.5, '1 234,5', 'fi'),
-        );
+        return [
+            [1234.5, '1.234,5', 'de_DE'],
+            [12345.912, '12.345,912', 'de_DE'],
+            [1234.5, '1 234,5', 'fr'],
+            [1234.5, '1 234,5', 'ru'],
+            [1234.5, '1 234,5', 'fi'],
+        ];
     }
 
     /**
@@ -93,91 +93,91 @@ public function testTransformWithScale()
 
     public function transformWithRoundingProvider()
     {
-        return array(
+        return [
             // towards positive infinity (1.6 -> 2, -1.6 -> -1)
-            array(0, 1234.5, '1235', NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(0, 1234.4, '1235', NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(0, -1234.5, '-1234', NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(1, 123.45, '123,5', NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(1, 123.44, '123,5', NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(1, -123.45, '-123,4', NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_CEILING),
+            [0, 1234.5, '1235', NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [0, 1234.4, '1235', NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [0, -1234.5, '-1234', NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [1, 123.45, '123,5', NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [1, 123.44, '123,5', NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [1, -123.45, '-123,4', NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_CEILING],
             // towards negative infinity (1.6 -> 1, -1.6 -> -2)
-            array(0, 1234.5, '1234', NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(0, -1234.5, '-1235', NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(0, -1234.4, '-1235', NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1, 123.45, '123,4', NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1, -123.45, '-123,5', NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1, -123.44, '-123,5', NumberToLocalizedStringTransformer::ROUND_FLOOR),
+            [0, 1234.5, '1234', NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [0, -1234.5, '-1235', NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [0, -1234.4, '-1235', NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [1, 123.45, '123,4', NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [1, -123.45, '-123,5', NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [1, -123.44, '-123,5', NumberToLocalizedStringTransformer::ROUND_FLOOR],
             // away from zero (1.6 -> 2, -1.6 -> 2)
-            array(0, 1234.5, '1235', NumberToLocalizedStringTransformer::ROUND_UP),
-            array(0, 1234.4, '1235', NumberToLocalizedStringTransformer::ROUND_UP),
-            array(0, -1234.5, '-1235', NumberToLocalizedStringTransformer::ROUND_UP),
-            array(0, -1234.4, '-1235', NumberToLocalizedStringTransformer::ROUND_UP),
-            array(1, 123.45, '123,5', NumberToLocalizedStringTransformer::ROUND_UP),
-            array(1, 123.44, '123,5', NumberToLocalizedStringTransformer::ROUND_UP),
-            array(1, -123.45, '-123,5', NumberToLocalizedStringTransformer::ROUND_UP),
-            array(1, -123.44, '-123,5', NumberToLocalizedStringTransformer::ROUND_UP),
+            [0, 1234.5, '1235', NumberToLocalizedStringTransformer::ROUND_UP],
+            [0, 1234.4, '1235', NumberToLocalizedStringTransformer::ROUND_UP],
+            [0, -1234.5, '-1235', NumberToLocalizedStringTransformer::ROUND_UP],
+            [0, -1234.4, '-1235', NumberToLocalizedStringTransformer::ROUND_UP],
+            [1, 123.45, '123,5', NumberToLocalizedStringTransformer::ROUND_UP],
+            [1, 123.44, '123,5', NumberToLocalizedStringTransformer::ROUND_UP],
+            [1, -123.45, '-123,5', NumberToLocalizedStringTransformer::ROUND_UP],
+            [1, -123.44, '-123,5', NumberToLocalizedStringTransformer::ROUND_UP],
             // towards zero (1.6 -> 1, -1.6 -> -1)
-            array(0, 1234.5, '1234', NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(0, -1234.5, '-1234', NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(1, 123.45, '123,4', NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(1, -123.45, '-123,4', NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_DOWN),
+            [0, 1234.5, '1234', NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [0, -1234.5, '-1234', NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [1, 123.45, '123,4', NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [1, -123.45, '-123,4', NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_DOWN],
             // round halves (.5) to the next even number
-            array(0, 1234.6, '1235', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, 1234.5, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, 1233.5, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, 1232.5, '1232', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, -1234.6, '-1235', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, -1234.5, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, -1233.5, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, -1232.5, '-1232', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, 123.46, '123,5', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, 123.45, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, 123.35, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, 123.25, '123,2', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, -123.46, '-123,5', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, -123.45, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, -123.35, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, -123.25, '-123,2', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
+            [0, 1234.6, '1235', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, 1234.5, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, 1233.5, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, 1232.5, '1232', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, -1234.6, '-1235', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, -1234.5, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, -1233.5, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, -1232.5, '-1232', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, 123.46, '123,5', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, 123.45, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, 123.35, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, 123.25, '123,2', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, -123.46, '-123,5', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, -123.45, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, -123.35, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, -123.25, '-123,2', NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
             // round halves (.5) away from zero
-            array(0, 1234.6, '1235', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, 1234.5, '1235', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, -1234.6, '-1235', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, -1234.5, '-1235', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, 123.46, '123,5', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, 123.45, '123,5', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, -123.46, '-123,5', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, -123.45, '-123,5', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_UP),
+            [0, 1234.6, '1235', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, 1234.5, '1235', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, -1234.6, '-1235', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, -1234.5, '-1235', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, 123.46, '123,5', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, 123.45, '123,5', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, -123.46, '-123,5', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, -123.45, '-123,5', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_UP],
             // round halves (.5) towards zero
-            array(0, 1234.6, '1235', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, 1234.5, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, -1234.6, '-1235', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, -1234.5, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, 123.46, '123,5', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, 123.45, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, -123.46, '-123,5', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, -123.45, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-        );
+            [0, 1234.6, '1235', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, 1234.5, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, 1234.4, '1234', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, -1234.6, '-1235', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, -1234.5, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, -1234.4, '-1234', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, 123.46, '123,5', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, 123.45, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, 123.44, '123,4', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, -123.46, '-123,5', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, -123.45, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, -123.44, '-123,4', NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+        ];
     }
 
     /**
@@ -268,93 +268,93 @@ public function testReverseTransformWithGroupingButWithoutGroupSeparator()
 
     public function reverseTransformWithRoundingProvider()
     {
-        return array(
+        return [
             // towards positive infinity (1.6 -> 2, -1.6 -> -1)
-            array(0, '1234,5', 1235, NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(0, '1234,4', 1235, NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(0, '-1234,5', -1234, NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(1, '123,45', 123.5, NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(1, '123,44', 123.5, NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(1, '-123,45', -123.4, NumberToLocalizedStringTransformer::ROUND_CEILING),
-            array(1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_CEILING),
+            [0, '1234,5', 1235, NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [0, '1234,4', 1235, NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [0, '-1234,5', -1234, NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [1, '123,45', 123.5, NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [1, '123,44', 123.5, NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [1, '-123,45', -123.4, NumberToLocalizedStringTransformer::ROUND_CEILING],
+            [1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_CEILING],
             // towards negative infinity (1.6 -> 1, -1.6 -> -2)
-            array(0, '1234,5', 1234, NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(0, '-1234,5', -1235, NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(0, '-1234,4', -1235, NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1, '123,45', 123.4, NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1, '-123,45', -123.5, NumberToLocalizedStringTransformer::ROUND_FLOOR),
-            array(1, '-123,44', -123.5, NumberToLocalizedStringTransformer::ROUND_FLOOR),
+            [0, '1234,5', 1234, NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [0, '-1234,5', -1235, NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [0, '-1234,4', -1235, NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [1, '123,45', 123.4, NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [1, '-123,45', -123.5, NumberToLocalizedStringTransformer::ROUND_FLOOR],
+            [1, '-123,44', -123.5, NumberToLocalizedStringTransformer::ROUND_FLOOR],
             // away from zero (1.6 -> 2, -1.6 -> 2)
-            array(0, '1234,5', 1235, NumberToLocalizedStringTransformer::ROUND_UP),
-            array(0, '1234,4', 1235, NumberToLocalizedStringTransformer::ROUND_UP),
-            array(0, '-1234,5', -1235, NumberToLocalizedStringTransformer::ROUND_UP),
-            array(0, '-1234,4', -1235, NumberToLocalizedStringTransformer::ROUND_UP),
-            array(1, '123,45', 123.5, NumberToLocalizedStringTransformer::ROUND_UP),
-            array(1, '123,44', 123.5, NumberToLocalizedStringTransformer::ROUND_UP),
-            array(1, '-123,45', -123.5, NumberToLocalizedStringTransformer::ROUND_UP),
-            array(1, '-123,44', -123.5, NumberToLocalizedStringTransformer::ROUND_UP),
+            [0, '1234,5', 1235, NumberToLocalizedStringTransformer::ROUND_UP],
+            [0, '1234,4', 1235, NumberToLocalizedStringTransformer::ROUND_UP],
+            [0, '-1234,5', -1235, NumberToLocalizedStringTransformer::ROUND_UP],
+            [0, '-1234,4', -1235, NumberToLocalizedStringTransformer::ROUND_UP],
+            [1, '123,45', 123.5, NumberToLocalizedStringTransformer::ROUND_UP],
+            [1, '123,44', 123.5, NumberToLocalizedStringTransformer::ROUND_UP],
+            [1, '-123,45', -123.5, NumberToLocalizedStringTransformer::ROUND_UP],
+            [1, '-123,44', -123.5, NumberToLocalizedStringTransformer::ROUND_UP],
             // towards zero (1.6 -> 1, -1.6 -> -1)
-            array(0, '1234,5', 1234, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(0, '-1234,5', -1234, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(1, '123,45', 123.4, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(1, '-123,45', -123.4, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(2, '37.37', 37.37, NumberToLocalizedStringTransformer::ROUND_DOWN),
-            array(2, '2.01', 2.01, NumberToLocalizedStringTransformer::ROUND_DOWN),
+            [0, '1234,5', 1234, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [0, '-1234,5', -1234, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [1, '123,45', 123.4, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [1, '-123,45', -123.4, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [2, '37.37', 37.37, NumberToLocalizedStringTransformer::ROUND_DOWN],
+            [2, '2.01', 2.01, NumberToLocalizedStringTransformer::ROUND_DOWN],
             // round halves (.5) to the next even number
-            array(0, '1234,6', 1235, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '1234,5', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '1233,5', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '1232,5', 1232, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '-1234,6', -1235, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '-1234,5', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '-1233,5', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(0, '-1232,5', -1232, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '123,46', 123.5, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '123,45', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '123,35', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '123,25', 123.2, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '-123,46', -123.5, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '-123,45', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '-123,35', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
-            array(1, '-123,25', -123.2, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN),
+            [0, '1234,6', 1235, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '1234,5', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '1233,5', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '1232,5', 1232, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '-1234,6', -1235, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '-1234,5', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '-1233,5', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [0, '-1232,5', -1232, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '123,46', 123.5, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '123,45', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '123,35', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '123,25', 123.2, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '-123,46', -123.5, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '-123,45', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '-123,35', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
+            [1, '-123,25', -123.2, NumberToLocalizedStringTransformer::ROUND_HALF_EVEN],
             // round halves (.5) away from zero
-            array(0, '1234,6', 1235, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, '1234,5', 1235, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, '-1234,6', -1235, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, '-1234,5', -1235, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, '123,46', 123.5, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, '123,45', 123.5, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, '-123,46', -123.5, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, '-123,45', -123.5, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
-            array(1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_UP),
+            [0, '1234,6', 1235, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, '1234,5', 1235, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, '-1234,6', -1235, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, '-1234,5', -1235, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, '123,46', 123.5, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, '123,45', 123.5, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, '-123,46', -123.5, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, '-123,45', -123.5, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
+            [1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_UP],
             // round halves (.5) towards zero
-            array(0, '1234,6', 1235, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, '1234,5', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, '-1234,6', -1235, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, '-1234,5', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, '123,46', 123.5, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, '123,45', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, '-123,46', -123.5, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, '-123,45', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-            array(1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN),
-        );
+            [0, '1234,6', 1235, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, '1234,5', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, '1234,4', 1234, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, '-1234,6', -1235, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, '-1234,5', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [0, '-1234,4', -1234, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, '123,46', 123.5, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, '123,45', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, '123,44', 123.4, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, '-123,46', -123.5, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, '-123,45', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+            [1, '-123,44', -123.4, NumberToLocalizedStringTransformer::ROUND_HALF_DOWN],
+        ];
     }
 
     /**
@@ -527,11 +527,11 @@ public function testReverseTransformDisallowsNaN($nan)
 
     public function nanRepresentationProvider()
     {
-        return array(
-            array('nan'),
-            array('NaN'), // see https://github.com/symfony/symfony/issues/3161
-            array('NAN'),
-        );
+        return [
+            ['nan'],
+            ['NaN'], // see https://github.com/symfony/symfony/issues/3161
+            ['NAN'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/PercentToLocalizedStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/PercentToLocalizedStringTransformerTest.php
index 3467e891c9bd..c6007a398b86 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/PercentToLocalizedStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/PercentToLocalizedStringTransformerTest.php
@@ -226,8 +
57AE
226,8 @@ public function testDecimalSeparatorMayBeCommaIfGroupingSeparatorIsCommaButNoGro
         $formatter->setAttribute(\NumberFormatter::GROUPING_USED, false);
 
         $transformer = $this->getMockBuilder('Symfony\Component\Form\Extension\Core\DataTransformer\PercentToLocalizedStringTransformer')
-            ->setMethods(array('getNumberFormatter'))
-            ->setConstructorArgs(array(1, 'integer'))
+            ->setMethods(['getNumberFormatter'])
+            ->setConstructorArgs([1, 'integer'])
             ->getMock();
         $transformer->expects($this->any())
             ->method('getNumberFormatter')
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ValueToDuplicatesTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ValueToDuplicatesTransformerTest.php
index 5c1d56264ed8..3ef681da66b4 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ValueToDuplicatesTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/ValueToDuplicatesTransformerTest.php
@@ -20,7 +20,7 @@ class ValueToDuplicatesTransformerTest extends TestCase
 
     protected function setUp()
     {
-        $this->transformer = new ValueToDuplicatesTransformer(array('a', 'b', 'c'));
+        $this->transformer = new ValueToDuplicatesTransformer(['a', 'b', 'c']);
     }
 
     protected function tearDown()
@@ -30,77 +30,77 @@ protected function tearDown()
 
     public function testTransform()
     {
-        $output = array(
+        $output = [
             'a' => 'Foo',
             'b' => 'Foo',
             'c' => 'Foo',
-        );
+        ];
 
         $this->assertSame($output, $this->transformer->transform('Foo'));
     }
 
     public function testTransformEmpty()
     {
-        $output = array(
+        $output = [
             'a' => null,
             'b' => null,
             'c' => null,
-        );
+        ];
 
         $this->assertSame($output, $this->transformer->transform(null));
     }
 
     public function testReverseTransform()
     {
-        $input = array(
+        $input = [
             'a' => 'Foo',
             'b' => 'Foo',
             'c' => 'Foo',
-        );
+        ];
 
         $this->assertSame('Foo', $this->transformer->reverseTransform($input));
     }
 
     public function testReverseTransformCompletelyEmpty()
     {
-        $input = array(
+        $input = [
             'a' => '',
             'b' => '',
             'c' => '',
-        );
+        ];
 
         $this->assertNull($this->transformer->reverseTransform($input));
     }
 
     public function testReverseTransformCompletelyNull()
     {
-        $input = array(
+        $input = [
             'a' => null,
             'b' => null,
             'c' => null,
-        );
+        ];
 
         $this->assertNull($this->transformer->reverseTransform($input));
     }
 
     public function testReverseTransformEmptyArray()
     {
-        $input = array(
-            'a' => array(),
-            'b' => array(),
-            'c' => array(),
-        );
+        $input = [
+            'a' => [],
+            'b' => [],
+            'c' => [],
+        ];
 
         $this->assertNull($this->transformer->reverseTransform($input));
     }
 
     public function testReverseTransformZeroString()
     {
-        $input = array(
+        $input = [
             'a' => '0',
             'b' => '0',
             'c' => '0',
-        );
+        ];
 
         $this->assertSame('0', $this->transformer->reverseTransform($input));
     }
@@ -110,11 +110,11 @@ public function testReverseTransformZeroString()
      */
     public function testReverseTransformPartiallyNull()
     {
-        $input = array(
+        $input = [
             'a' => 'Foo',
             'b' => 'Foo',
             'c' => null,
-        );
+        ];
 
         $this->transformer->reverseTransform($input);
     }
@@ -124,11 +124,11 @@ public function testReverseTransformPartiallyNull()
      */
     public function testReverseTransformDifferences()
     {
-        $input = array(
+        $input = [
             'a' => 'Foo',
             'b' => 'Bar',
             'c' => 'Foo',
-        );
+        ];
 
         $this->transformer->reverseTransform($input);
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/FixUrlProtocolListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/FixUrlProtocolListenerTest.php
index 454aaa85617c..7861e12197e4 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/FixUrlProtocolListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/FixUrlProtocolListenerTest.php
@@ -43,13 +43,13 @@ public function testSkipKnownUrl()
 
     public function provideUrlsWithSupportedProtocols()
     {
-        return array(
-            array('ftp://www.symfony.com'),
-            array('chrome-extension://foo'),
-            array('h323://foo'),
-            array('iris.beep://foo'),
-            array('foo+bar://foo'),
-        );
+        return [
+            ['ftp://www.symfony.com'],
+            ['chrome-extension://foo'],
+            ['h323://foo'],
+            ['iris.beep://foo'],
+            ['foo+bar://foo'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/MergeCollectionListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/MergeCollectionListenerTest.php
index 627d7bb3f1e6..41b7d18bd5be 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/MergeCollectionListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/MergeCollectionListenerTest.php
@@ -51,20 +51,20 @@ protected function getMockForm()
 
     public function getBooleanMatrix1()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     public function getBooleanMatrix2()
     {
-        return array(
-            array(true, true),
-            array(true, false),
-            array(false, true),
-            array(false, false),
-        );
+        return [
+            [true, true],
+            [true, false],
+            [false, true],
+            [false, false],
+        ];
     }
 
     abstract protected function getData(array $data);
@@ -74,8 +74,8 @@ abstract protected function getData(array $data);
      */
     public function testAddExtraEntriesIfAllowAdd($allowDelete)
     {
-        $originalData = $this->getData(array(1 => 'second'));
-        $newData = $this->getData(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $originalData = $this->getData([1 => 'second']);
+        $newData = $this->getData([0 => 'first', 1 => 'second', 2 => 'third']);
 
         $listener = new MergeCollectionListener(true, $allowDelete);
 
@@ -98,8 +98,8 @@ public function testAddExtraEntriesIfAllowAdd($allowDelete)
      */
     public function testAddExtraEntriesIfAllowAddDontOverwriteExistingIndices($allowDelete)
     {
-        $originalData = $this->getData(array(1 => 'first'));
-        $newData = $this->getData(array(0 => 'first', 1 => 'second'));
+        $originalData = $this->getData([1 => 'first']);
+        $newData = $this->getData([0 => 'first', 1 => 'second']);
 
         $listener = new MergeCollectionListener(true, $allowDelete);
 
@@ -114,7 +114,7 @@ public function testAddExtraEntriesIfAllowAddDontOverwriteExistingIndices($allow
         }
 
         // The original object matches the new object
-        $this->assertEquals($this->getData(array(1 => 'first', 2 => 'second')), $event->getData());
+        $this->assertEquals($this->getData([1 => 'first', 2 => 'second']), $event->getData());
     }
 
     /**
@@ -122,9 +122,9 @@ public function testAddExtraEntriesIfAllowAddDontOverwriteExistingIndices($allow
      */
     public function testDoNothingIfNotAllowAdd($allowDelete)
     {
-        $originalDataArray = array(1 => 'second');
+        $originalDataArray = [1 => 'second'];
         $originalData = $this->getData($originalDataArray);
-        $newData = $this->getData(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $newData = $this->getData([0 => 'first', 1 => 'second', 2 => 'third']);
 
         $listener = new MergeCollectionListener(false, $allowDelete);
 
@@ -147,8 +147,8 @@ public function testDoNothingIfNotAllowAdd($allowDelete)
      */
     public function testRemoveMissingEntriesIfAllowDelete($allowAdd)
     {
-        $originalData = $this->getData(array(0 => 'first', 1 => 'second', 2 => 'third'));
-        $newData = $this->getData(array(1 => 'second'));
+        $originalData = $this->getData([0 => 'first', 1 => 'second', 2 => 'third']);
+        $newData = $this->getData([1 => 'second']);
 
         $listener = new MergeCollectionListener($allowAdd, true);
 
@@ -171,9 +171,9 @@ public function testRemoveMissingEntriesIfAllowDelete($allowAdd)
      */
     public function testDoNothingIfNotAllowDelete($allowAdd)
     {
-        $originalDataArray = array(0 => 'first', 1 => 'second', 2 => 'third');
+        $originalDataArray = [0 => 'first', 1 => 'second', 2 => 'third'];
         $originalData = $this->getData($originalDataArray);
-        $newData = $this->getData(array(1 => 'second'));
+        $newData = $this->getData([1 => 'second']);
 
         $listener = new MergeCollectionListener($allowAdd, false);
 
@@ -205,7 +205,7 @@ public function testRequireArrayOrTraversable($allowAdd, $allowDelete)
 
     public function testDealWithNullData()
     {
-        $originalData = $this->getData(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $originalData = $this->getData([0 => 'first', 1 => 'second', 2 => 'third']);
         $newData = null;
 
         $listener = new MergeCollectionListener(false, false);
@@ -224,7 +224,7 @@ public function testDealWithNullData()
     public function testDealWithNullOriginalDataIfAllowAdd($allowDelete)
     {
         $originalData = null;
-        $newData = $this->getData(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $newData = $this->getData([0 => 'first', 1 => 'second', 2 => 'third']);
 
         $listener = new MergeCollectionListener(true, $allowDelete);
 
@@ -242,7 +242,7 @@ public function testDealWithNullOriginalDataIfAllowAdd($allowDelete)
     public function testDontDealWithNullOriginalDataIfNotAllowAdd($allowDelete)
     {
         $originalData = null;
-        $newData = $this->getData(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $newData = $this->getData([0 => 'first', 1 => 'second', 2 => 'third']);
 
         $listener = new MergeCollectionListener(false, $allowDelete);
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
index 017c1bdc040c..daa3a8de0948 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
@@ -70,16 +70,16 @@ public function testPreSetDataResizesForm()
 
         $this->factory->expects($this->at(0))
             ->method('createNamed')
-            ->with(1, 'text', null, array('property_path' => '[1]', 'attr' => array('maxlength' => 10), 'auto_initialize' => false))
+            ->with(1, 'text', null, ['property_path' => '[1]', 'attr' => ['maxlength' => 10], 'auto_initialize' => false])
             ->will($this->returnValue($this->getForm('1')));
         $this->factory->expects($this->at(1))
             ->method('createNamed')
-            ->with(2, 'text', null, array('property_path' => '[2]', 'attr' => array('maxlength' => 10), 'auto_initialize' => false))
+            ->with(2, 'text', null, ['property_path' => '[2]', 'attr' => ['maxlength' => 10], 'auto_initialize' => false])
             ->will($this->returnValue($this->getForm('2')));
 
-        $data = array(1 => 'string', 2 => 'string');
+        $data = [1 => 'string', 2 => 'string'];
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array('attr' => array('maxlength' => 10)), false, false);
+        $listener = new ResizeFormListener('text', ['attr' => ['maxlength' => 10]], false, false);
         $listener->preSetData($event);
 
         $this->assertFalse($this->form->has('0'));
@@ -94,7 +94,7 @@ public function testPreSetDataRequiresArrayOrTraversable()
     {
         $data = 'no array or traversable';
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, false);
+        $listener = new ResizeFormListener('text', [], false, false);
         $listener->preSetData($event);
     }
 
@@ -104,7 +104,7 @@ public function testPreSetDataDealsWithNullData()
 
         $data = null;
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, false);
+        $listener = new ResizeFormListener('text', [], false, false);
         $listener->preSetData($event);
     }
 
@@ -114,12 +114,12 @@ public function testPreSubmitResizesUpIfAllowAdd()
 
         $this->factory->expects($this->once())
             ->method('createNamed')
-            ->with(1, 'text', null, array('property_path' => '[1]', 'attr' => array('maxlength' => 10), 'auto_initialize' => false))
+            ->with(1, 'text', null, ['property_path' => '[1]', 'attr' => ['maxlength' => 10], 'auto_initialize' => false])
             ->will($this->returnValue($this->getForm('1')));
 
-        $data = array(0 => 'string', 1 => 'string');
+        $data = [0 => 'string', 1 => 'string'];
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array('attr' => array('maxlength' => 10)), true, false);
+        $listener = new ResizeFormListener('text', ['attr' => ['maxlength' => 10]], true, false);
         $listener->preSubmit($event);
 
         $this->assertTrue($this->form->has('0'));
@@ -131,9 +131,9 @@ public function testPreSubmitResizesDownIfAllowDelete()
         $this->form->add($this->getForm('0'));
         $this->form->add($this->getForm('1'));
 
-        $data = array(0 => 'string');
+        $data = [0 => 'string'];
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true);
+        $listener = new ResizeFormListener('text', [], false, true);
         $listener->preSubmit($event);
 
         $this->assertTrue($this->form->has('0'));
@@ -145,9 +145,9 @@ public function testPreSubmitRemovesZeroKeys()
     {
         $this->form->add($this->getForm('0'));
 
-        $data = array();
+        $data = [];
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true);
+        $listener = new ResizeFormListener('text', [], false, true);
         $listener->preSubmit($event);
 
         $this->assertFalse($this->form->has('0'));
@@ -158,9 +158,9 @@ public function testPreSubmitDoesNothingIfNotAllowAddNorAllowDelete()
         $this->form->add($this->getForm('0'));
         $this->form->add($this->getForm('1'));
 
-        $data = array(0 => 'string', 2 => 'string');
+        $data = [0 => 'string', 2 => 'string'];
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, false);
+        $listener = new ResizeFormListener('text', [], false, false);
         $listener->preSubmit($event);
 
         $this->assertTrue($this->form->has('0'));
@@ -172,7 +172,7 @@ public function testPreSubmitDealsWithNoArrayOrTraversable()
     {
         $data = 'no array or traversable';
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, false);
+        $listener = new ResizeFormListener('text', [], false, false);
         $listener->preSubmit($event);
 
         $this->assertFalse($this->form->has('1'));
@@ -184,7 +184,7 @@ public function testPreSubmitDealsWithNullData()
 
         $data = null;
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true);
+        $listener = new ResizeFormListener('text', [], false, true);
         $listener->preSubmit($event);
 
         $this->assertFalse($this->form->has('1'));
@@ -197,7 +197,7 @@ public function testPreSubmitDealsWithEmptyData()
 
         $data = '';
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true);
+        $listener = new ResizeFormListener('text', [], false, true);
         $listener->preSubmit($event);
 
         $this->assertFalse($this->form->has('1'));
@@ -207,21 +207,21 @@ public function testOnSubmitNormDataRemovesEntriesMissingInTheFormIfAllowDelete(
     {
         $this->form->add($this->getForm('1'));
 
-        $data = array(0 => 'first', 1 => 'second', 2 => 'third');
+        $data = [0 => 'first', 1 => 'second', 2 => 'third'];
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true);
+        $listener = new ResizeFormListener('text', [], false, true);
         $listener->onSubmit($event);
 
-        $this->assertEquals(array(1 => 'second'), $event->getData());
+        $this->assertEquals([1 => 'second'], $event->getData());
     }
 
     public function testOnSubmitNormDataDoesNothingIfNotAllowDelete()
     {
         $this->form->add($this->getForm('1'));
 
-        $data = array(0 => 'first', 1 => 'second', 2 => 'third');
+        $data = [0 => 'first', 1 => 'second', 2 => 'third'];
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, false);
+        $listener = new ResizeFormListener('text', [], false, false);
         $listener->onSubmit($event);
 
         $this->assertEquals($data, $event->getData());
@@ -234,7 +234,7 @@ public function testOnSubmitNormDataRequiresArrayOrTraversable()
     {
         $data = 'no array or traversable';
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, false);
+        $listener = new ResizeFormListener('text', [], false, false);
         $listener->onSubmit($event);
     }
 
@@ -244,19 +244,19 @@ public function testOnSubmitNormDataDealsWithNullData()
 
         $data = null;
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true);
+        $listener = new ResizeFormListener('text', [], false, true);
         $listener->onSubmit($event);
 
-        $this->assertEquals(array(), $event->getData());
+        $this->assertEquals([], $event->getData());
     }
 
     public function testOnSubmitDealsWithObjectBackedIteratorAggregate()
     {
         $this->form->add($this->getForm('1'));
 
-        $data = new \ArrayObject(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $data = new \ArrayObject([0 => 'first', 1 => 'second', 2 => 'third']);
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true);
+        $listener = new ResizeFormListener('text', [], false, true);
         $listener->onSubmit($event);
 
         $this->assertArrayNotHasKey(0, $event->getData());
@@ -267,9 +267,9 @@ public function testOnSubmitDealsWithArrayBackedIteratorAggregate()
     {
         $this->form->add($this->getForm('1'));
 
-        $data = new ArrayCollection(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $data = new ArrayCollection([0 => 'first', 1 => 'second', 2 => 'third']);
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true);
+        $listener = new ResizeFormListener('text', [], false, true);
         $listener->onSubmit($event);
 
         $this->assertArrayNotHasKey(0, $event->getData());
@@ -278,24 +278,24 @@ public function testOnSubmitDealsWithArrayBackedIteratorAggregate()
 
     public function testOnSubmitDeleteEmptyNotCompoundEntriesIfAllowDelete()
     {
-        $this->form->setData(array('0' => 'first', '1' => 'second'));
+        $this->form->setData(['0' => 'first', '1' => 'second']);
         $this->form->add($this->getForm('0'));
         $this->form->add($this->getForm('1'));
 
-        $data = array(0 => 'first', 1 => '');
+        $data = [0 => 'first', 1 => ''];
         foreach ($data as $child => $dat) {
             $this->form->get($child)->setData($dat);
         }
         $event = new FormEvent($this->form, $data);
-        $listener = new ResizeFormListener('text', array(), false, true, true);
+        $listener = new ResizeFormListener('text', [], false, true, true);
         $listener->onSubmit($event);
 
-        $this->assertEquals(array(0 => 'first'), $event->getData());
+        $this->assertEquals([0 => 'first'], $event->getData());
     }
 
     public function testOnSubmitDeleteEmptyCompoundEntriesIfAllowDelete()
     {
-        $this->form->setData(array('0' => array('name' => 'John'), '1' => array('name' => 'Jane')));
+        $this->form->setData(['0' => ['name' => 'John'], '1' => ['name' => 'Jane']]);
         $form1 = $this->getBuilder('0')
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
@@ -309,7 +309,7 @@ public function testOnSubmitDeleteEmptyCompoundEntriesIfAllowDelete()
         $this->form->add($form1);
         $this->form->add($form2);
 
-        $data = array('0' => array('name' => 'John'), '1' => array('name' => ''));
+        $data = ['0' => ['name' => 'John'], '1' => ['name' => '']];
         foreach ($data as $child => $dat) {
             $this->form->get($child)->setData($dat);
         }
@@ -317,9 +317,9 @@ public function testOnSubmitDeleteEmptyCompoundEntriesIfAllowDelete()
         $callback = function ($data) {
             return '' === $data['name'];
         };
-        $listener = new ResizeFormListener('text', array(), false, true, $callback);
+        $listener = new ResizeFormListener('text', [],
B41A
 false, true, $callback);
         $listener->onSubmit($event);
 
-        $this->assertEquals(array('0' => array('name' => 'John')), $event->getData());
+        $this->assertEquals(['0' => ['name' => 'John']], $event->getData());
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/BaseTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/BaseTypeTest.php
index da3f48b48662..92eff38669ff 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/BaseTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/BaseTypeTest.php
@@ -22,7 +22,7 @@ abstract class BaseTypeTest extends TypeTestCase
 
     public function testPassDisabledAsOption()
     {
-        $form = $this->factory->create($this->getTestedType(), null, array('disabled' => true));
+        $form = $this->factory->create($this->getTestedType(), null, ['disabled' => true]);
 
         $this->assertTrue($form->isDisabled());
     }
@@ -73,9 +73,9 @@ public function testPassIdAndNameToViewWithGrandParent()
 
     public function testPassTranslationDomainToView()
     {
-        $view = $this->factory->create($this->getTestedType(), null, array(
+        $view = $this->factory->create($this->getTestedType(), null, [
             'translation_domain' => 'domain',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('domain', $view->vars['translation_domain']);
@@ -84,9 +84,9 @@ public function testPassTranslationDomainToView()
     public function testInheritTranslationDomainFromParent()
     {
         $view = $this->factory
-            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, array(
+            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, [
                 'translation_domain' => 'domain',
-            ))
+            ])
             ->add('child', $this->getTestedType())
             ->getForm()
             ->createView();
@@ -97,12 +97,12 @@ public function testInheritTranslationDomainFromParent()
     public function testPreferOwnTranslationDomain()
     {
         $view = $this->factory
-            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, array(
+            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, [
                 'translation_domain' => 'parent_domain',
-            ))
-            ->add('child', $this->getTestedType(), array(
+            ])
+            ->add('child', $this->getTestedType(), [
                 'translation_domain' => 'domain',
-            ))
+            ])
             ->getForm()
             ->createView();
 
@@ -121,7 +121,7 @@ public function testDefaultTranslationDomain()
 
     public function testPassLabelToView()
     {
-        $view = $this->factory->createNamed('__test___field', $this->getTestedType(), null, array('label' => 'My label'))
+        $view = $this->factory->createNamed('__test___field', $this->getTestedType(), null, ['label' => 'My label'])
             ->createView();
 
         $this->assertSame('My label', $view->vars['label']);
@@ -150,7 +150,7 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = 'empty', $expect
         $builder = $this->factory->createBuilder($this->getTestedType());
 
         if ($builder->getCompound()) {
-            $emptyData = array();
+            $emptyData = [];
             foreach ($builder as $field) {
                 // empty children should map null (model data) in the compound view data
                 $emptyData[$field->getName()] = null;
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/BirthdayTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/BirthdayTypeTest.php
index 7f9130b90ee4..ffadf8c844dc 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/BirthdayTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/BirthdayTypeTest.php
@@ -23,8 +23,8 @@ class BirthdayTypeTest extends DateTypeTest
      */
     public function testSetInvalidYearsOption()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'years' => 'bad value',
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CheckboxTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CheckboxTypeTest.php
index 3084ba582679..fb2d571884ad 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CheckboxTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CheckboxTypeTest.php
@@ -28,7 +28,7 @@ public function testDataIsFalseByDefault()
 
     public function testPassValueToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array('value' => 'foobar'))
+        $view = $this->factory->create(static::TESTED_TYPE, null, ['value' => 'foobar'])
             ->createView();
 
         $this->assertEquals('foobar', $view->vars['value']);
@@ -45,7 +45,7 @@ public function testCheckedIfDataTrue()
 
     public function testCheckedIfDataTrueWithEmptyValue()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array('value' => ''))
+        $view = $this->factory->create(static::TESTED_TYPE, null, ['value' => ''])
             ->setData(true)
             ->createView();
 
@@ -63,9 +63,9 @@ public function testNotCheckedIfDataFalse()
 
     public function testSubmitWithValueChecked()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'value' => 'foobar',
-        ));
+        ]);
         $form->submit('foobar');
 
         $this->assertTrue($form->getData());
@@ -74,9 +74,9 @@ public function testSubmitWithValueChecked()
 
     public function testSubmitWithRandomValueChecked()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'value' => 'foobar',
-        ));
+        ]);
         $form->submit('krixikraxi');
 
         $this->assertTrue($form->getData());
@@ -85,9 +85,9 @@ public function testSubmitWithRandomValueChecked()
 
     public function testSubmitWithValueUnchecked()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'value' => 'foobar',
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertFalse($form->getData());
@@ -96,9 +96,9 @@ public function testSubmitWithValueUnchecked()
 
     public function testSubmitWithEmptyValueChecked()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'value' => '',
-        ));
+        ]);
         $form->submit('');
 
         $this->assertTrue($form->getData());
@@ -107,9 +107,9 @@ public function testSubmitWithEmptyValueChecked()
 
     public function testSubmitWithEmptyValueUnchecked()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'value' => '',
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertFalse($form->getData());
@@ -118,9 +118,9 @@ public function testSubmitWithEmptyValueUnchecked()
 
     public function testSubmitWithEmptyValueAndFalseUnchecked()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'value' => '',
-        ));
+        ]);
         $form->submit(false);
 
         $this->assertFalse($form->getData());
@@ -129,9 +129,9 @@ public function testSubmitWithEmptyValueAndFalseUnchecked()
 
     public function testSubmitWithEmptyValueAndTrueChecked()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'value' => '',
-        ));
+        ]);
         $form->submit(true);
 
         $this->assertTrue($form->getData());
@@ -167,10 +167,10 @@ function ($value) {
 
     public function provideCustomModelTransformerData()
     {
-        return array(
-            array('checked', true),
-            array('unchecked', false),
-        );
+        return [
+            ['checked', true],
+            ['unchecked', false],
+        ];
     }
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
@@ -180,9 +180,9 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitNullUsesDefaultEmptyData($emptyData = 'empty', $expectedData = true)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         // view data is transformed to the string true value
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypePerformanceTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypePerformanceTest.php
index 3e0ea22f9dbf..3616a139c156 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypePerformanceTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypePerformanceTest.php
@@ -30,9 +30,9 @@ public function testSameChoiceFieldCreatedMultipleTimes()
         $choices = range(1, 300);
 
         for ($i = 0; $i < 100; ++$i) {
-            $this->factory->create('Symfony\Component\Form\Extension\Core\Type\ChoiceType', mt_rand(1, 400), array(
+            $this->factory->create('Symfony\Component\Form\Extension\Core\Type\ChoiceType', mt_rand(1, 400), [
                 'choices' => $choices,
-            ));
+            ]);
         }
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php
index cb4d182b30ef..4a7f006f6f2e 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/ChoiceTypeTest.php
@@ -18,59 +18,59 @@ class ChoiceTypeTest extends BaseTypeTest
 {
     const TESTED_TYPE = 'Symfony\Component\Form\Extension\Core\Type\ChoiceType';
 
-    private $choices = array(
+    private $choices = [
         'Bernhard' => 'a',
         'Fabien' => 'b',
         'Kris' => 'c',
         'Jon' => 'd',
         'Roman' => 'e',
-    );
+    ];
 
-    private $scalarChoices = array(
+    private $scalarChoices = [
         'Yes' => true,
         'No' => false,
         'n/a' => '',
-    );
+    ];
 
-    private $booleanChoicesWithNull = array(
+    private $booleanChoicesWithNull = [
         'Yes' => true,
         'No' => false,
         'n/a' => null,
-    );
+    ];
 
-    private $numericChoicesFlipped = array(
+    private $numericChoicesFlipped = [
         0 => 'Bernhard',
         1 => 'Fabien',
         2 => 'Kris',
         3 => 'Jon',
         4 => 'Roman',
-    );
+    ];
 
     private $objectChoices;
 
-    protected $groupedChoices = array(
-        'Symfony' => array(
+    protected $groupedChoices = [
+        'Symfony' => [
             'Bernhard' => 'a',
             'Fabien' => 'b',
             'Kris' => 'c',
-        ),
-        'Doctrine' => array(
+        ],
+        'Doctrine' => [
             'Jon' => 'd',
             'Roman' => 'e',
-        ),
-    );
+        ],
+    ];
 
     protected function setUp()
     {
         parent::setUp();
 
-        $this->objectChoices = array(
-            (object) array('id' => 1, 'name' => 'Bernhard'),
-            (object) array('id' => 2, 'name' => 'Fabien'),
-            (object) array('id' => 3, 'name' => 'Kris'),
-            (object) array('id' => 4, 'name' => 'Jon'),
-            (object) array('id' => 5, 'name' => 'Roman'),
-        );
+        $this->objectChoices = [
+            (object) ['id' => 1, 'name' => 'Bernhard'],
+            (object) ['id' => 2, 'name' => 'Fabien'],
+            (object) ['id' => 3, 'name' => 'Kris'],
+            (object) ['id' => 4, 'name' => 'Jon'],
+            (object) ['id' => 5, 'name' => 'Roman'],
+        ];
     }
 
     protected function tearDown()
@@ -85,9 +85,9 @@ protected function tearDown()
      */
     public function testChoicesOptionExpectsArrayOrTraversable()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => new \stdClass(),
-        ));
+        ]);
     }
 
     /**
@@ -95,31 +95,31 @@ public function testChoicesOptionExpectsArrayOrTraversable()
      */
     public function testChoiceLoaderOptionExpectsChoiceLoaderInterface()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'choice_loader' => new \stdClass(),
-        ));
+        ]);
     }
 
     public function testChoiceListAndChoicesCanBeEmpty()
     {
-        $this->assertInstanceOf('Symfony\Component\Form\FormInterface', $this->factory->create(static::TESTED_TYPE, null, array()));
+        $this->assertInstanceOf('Symfony\Component\Form\FormInterface', $this->factory->create(static::TESTED_TYPE, null, []));
     }
 
     public function testExpandedChoicesOptionsTurnIntoChildren()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'expanded' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $this->assertCount(\count($this->choices), $form, 'Each choice should become a new field');
     }
 
     public function testChoiceListWithScalarValues()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->scalarChoices,
-        ))->createView();
+        ])->createView();
 
         $this->assertSame('1', $view->vars['choices'][0]->value);
         $this->assertSame('0', $view->vars['choices'][1]->value);
@@ -131,19 +131,19 @@ public function testChoiceListWithScalarValues()
 
     public function testChoiceListWithScalarValuesAndFalseAsPreSetData()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, false, array(
+        $view = $this->factory->create(static::TESTED_TYPE, false, [
             'choices' => $this->scalarChoices,
-        ))->createView();
+        ])->createView();
 
         $this->assertTrue($view->vars['is_selected']($view->vars['choices'][1]->value, $view->vars['value']), 'False value should be pre selected');
     }
 
     public function testExpandedChoiceListWithScalarValues()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->scalarChoices,
             'expanded' => true,
-        ))->createView();
+        ])->createView();
 
         $this->assertFalse($view->children[0]->vars['checked'], 'True value should not be pre selected');
         $this->assertFalse($view->children[1]->vars['checked'], 'False value should not be pre selected');
@@ -152,10 +152,10 @@ public function testExpandedChoiceListWithScalarValues()
 
     public function testExpandedChoiceListWithBooleanAndNullValues()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->booleanChoicesWithNull,
             'expanded' => true,
-        ))->createView();
+        ])->createView();
 
         $this->assertFalse($view->children[0]->vars['checked'], 'True value should not be pre selected');
         $this->assertFalse($view->children[1]->vars['checked'], 'False value should not be pre selected');
@@ -164,10 +164,10 @@ public function testExpandedChoiceListWithBooleanAndNullValues()
 
     public function testExpandedChoiceListWithScalarValuesAndFalseAsPreSetData()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, false, array(
+        $view = $this->factory->create(static::TESTED_TYPE, false, [
             'choices' => $this->scalarChoices,
             'expanded' => true,
-        ))->createView();
+        ])->createView();
 
         $this->assertSame('1', $view->vars['choices'][0]->value);
         $this->assertSame('0', $view->vars['choices'][1]->value);
@@ -177,10 +177,10 @@ public function testExpandedChoiceListWithScalarValuesAndFalseAsPreSetData()
 
     public function testExpandedChoiceListWithBooleanAndNullValuesAndFalseAsPreSetData()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, false, array(
+        $view = $this->factory->create(static::TESTED_TYPE, false, [
             'choices' => $this->booleanChoicesWithNull,
             'expanded' => true,
-        ))->createView();
+        ])->createView();
 
         $this->assertFalse($view->children[0]->vars['checked'], 'True value should not be pre selected');
         $this->assertTrue($view->children[1]->vars['checked'], 'False value should be pre selected');
@@ -189,12 +189,12 @@ public function testExpandedChoiceListWithBooleanAndNullValuesAndFalseAsPreSetDa
 
     public function testPlaceholderPresentOnNonRequiredExpandedSingleChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $this->assertArrayHasKey('placeholder', $form);
         $this->assertCount(\count($this->choices) + 1, $form, 'Each choice should become a new field');
@@ -202,12 +202,12 @@ public function testPlaceholderPresentOnNonRequiredExpandedSingleChoice()
 
     public function testPlaceholderNotPresentIfRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $this->assertArrayNotHasKey('placeholder', $form);
         $this->assertCount(\count($this->choices), $form, 'Each choice should become a new field');
@@ -215,12 +215,12 @@ public function testPlaceholderNotPresentIfRequired()
 
     public function testPlaceholderNotPresentIfMultiple()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'required' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $this->assertArrayNotHasKey('placeholder', $form);
         $this->assertCount(\count($this->choices), $form, 'Each choice should become a new field');
@@ -228,15 +228,15 @@ public function testPlaceholderNotPresentIfMultiple()
 
     public function testPlaceholderNotPresentIfEmptyChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
-            'choices' => array(
+            'choices' => [
                 'Empty' => '',
                 'Not empty' => 1,
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertArrayNotHasKey('placeholder', $form);
         $this->assertCount(2, $form, 'Each choice should become a new field');
@@ -244,16 +244,16 @@ public function testPlaceholderNotPresentIfEmptyChoice()
 
     public function testPlaceholderWithBooleanChoices()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'required' => false,
-            'choices' => array(
+            'choices' => [
                 'Yes' => true,
                 'No' => false,
-            ),
+            ],
             'placeholder' => 'Select an option',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('', $view->vars['value'], 'Value should be empty');
@@ -264,16 +264,16 @@ public function testPlaceholderWithBooleanChoices()
 
     public function testPlaceholderWithBooleanChoicesWithFalseAsPreSetData()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, false, array(
+        $view = $this->factory->create(static::TESTED_TYPE, false, [
             'multiple' => false,
             'expanded' => false,
             'required' => false,
-            'choices' => array(
+            'choices' => [
                 'Yes' => true,
                 'No' => false,
-            ),
+            ],
             'placeholder' => 'Select an option',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('0', $view->vars['value'], 'Value should be "0"');
@@ -284,16 +284,16 @@ public function testPlaceholderWithBooleanChoicesWithFalseAsPreSetData()
 
     public function testPlaceholderWithExpandedBooleanChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
-            'choices' => array(
+            'choices' => [
                 'Yes' => true,
                 'No' => false,
-            ),
+            ],
             'placeholder' => 'Select an option',
-        ));
+        ]);
 
         $this->assertArrayHasKey('placeholder', $form, 'Placeholder should be set');
         $this->assertCount(3, $form, 'Each choice should become a new field, placeholder included');
@@ -308,16 +308,16 @@ public function testPlaceholderWithExpandedBooleanChoices()
 
     public function testPlaceholderWithExpandedBooleanChoicesAndWithFalseAsPreSetData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, false, array(
+        $form = $this->factory->create(static::TESTED_TYPE, false, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
-            'choices' => array(
+            'choices' => [
                 'Yes' => true,
                 'No' => false,
-            ),
+            ],
             'placeholder' => 'Select an option',
-        ));
+        ]);
 
         $this->assertArrayHasKey('placeholder', $form, 'Placeholder should be set');
         $this->assertCount(3, $form, 'Each choice should become a new field, placeholder included');
@@ -332,12 +332,12 @@ public function testPlaceholderWithExpandedBooleanChoicesAndWithFalseAsPreSetDat
 
     public function testExpandedChoicesOptionsAreFlattened()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'expanded' => true,
             'choices' => $this->groupedChoices,
-        ));
+        ]);
 
-        $flattened = array();
+        $flattened = [];
         foreach ($this->groupedChoices as $choices) {
             $flattened = array_merge($flattened, array_keys($choices));
         }
@@ -351,20 +351,20 @@ public function testExpandedChoicesOptionsAreFlattened()
 
     public function testExpandedChoicesOptionsAreFlattenedObjectChoices()
     {
-        $obj1 = (object) array('id' => 1, 'name' => 'Bernhard');
-        $obj2 = (object) array('id' => 2, 'name' => 'Fabien');
-        $obj3 = (object) array('id' => 3, 'name' => 'Kris');
-        $obj4 = (object) array('id' => 4, 'name' => 'Jon');
-        $obj5 = (object) array('id' => 5, 'name' => 'Roman');
+        $obj1 = (object) ['id' => 1, 'name' => 'Bernhard'];
+        $obj2 = (object) ['id' => 2, 'name' => 'Fabien'];
+        $obj3 = (object) ['id' => 3, 'name' => 'Kris'];
+        $obj4 = (object) ['id' => 4, 'name' => 'Jon'];
+        $obj5 = (object) ['id' => 5, 'name' => 'Roman'];
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'expanded' => true,
-            'choices' => array(
-                'Symfony' => array($obj1, $obj2, $obj3),
-                'Doctrine' => array($obj4, $obj5),
-            ),
+            'choices' => [
+                'Symfony' => [$obj1, $obj2, $obj3],
+                'Doctrine' => [$obj4, $obj5],
+            ],
             'choice_name' => 'id',
-        ));
+        ]);
 
         $this->assertSame(5, $form->count(), 'Each nested choice should become a new field, not the groups');
         $this->assertTrue($form->has(1));
@@ -376,12 +376,12 @@ public function testExpandedChoicesOptionsAreFlattenedObjectChoices()
 
     public function testExpandedCheckboxesAreNeverRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'required' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         foreach ($form as $child) {
             $this->assertFalse($child->isRequired());
@@ -390,12 +390,12 @@ public function testExpandedCheckboxesAreNeverRequired()
 
     public function testExpandedRadiosAreRequiredIfChoiceChildIsRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         foreach ($form as $child) {
             $this->assertTrue($child->isRequired());
@@ -404,12 +404,12 @@ public function testExpandedRadiosAreRequiredIfChoiceChildIsRequired()
 
     public function testExpandedRadiosAreNotRequiredIfChoiceChildIsNotRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         foreach ($form as $child) {
             $this->assertFalse($child->isRequired());
@@ -418,11 +418,11 @@ public function testExpandedRadiosAreNotRequiredIfChoiceChildIsNotRequired()
 
     public function testSubmitSingleNonExpanded()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('b');
 
@@ -433,11 +433,11 @@ public function testSubmitSingleNonExpanded()
 
     public function testSubmitSingleNonExpandedInvalidChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('foobar');
 
@@ -448,11 +448,11 @@ public function testSubmitSingleNonExpandedInvalidChoice()
 
     public function testSubmitSingleNonExpandedNull()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit(null);
 
@@ -466,11 +466,11 @@ public function testSubmitSingleNonExpandedNull()
     // choices are available.
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit(null);
 
@@ -482,11 +482,11 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitSingleNonExpandedEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('');
 
@@ -497,16 +497,16 @@ public function testSubmitSingleNonExpandedEmpty()
 
     public function testSubmitSingleNonExpandedEmptyExplicitEmptyChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
-            'choices' => array(
+            'choices' => [
                 'Empty' => 'EMPTY_CHOICE',
-            ),
+            ],
             'choice_value' => function () {
                 return '';
             },
-        ));
+        ]);
 
         $form->submit('');
 
@@ -520,11 +520,11 @@ public function testSubmitSingleNonExpandedEmptyExplicitEmptyChoice()
     // choices are available.
     public function testSubmitSingleNonExpandedEmptyNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit('');
 
@@ -535,11 +535,11 @@ public function testSubmitSingleNonExpandedEmptyNoChoices()
 
     public function testSubmitSingleNonExpandedFalse()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit(false);
 
@@ -553,11 +553,11 @@ public function testSubmitSingleNonExpandedFalse()
     // choices are available.
     public function testSubmitSingleNonExpandedFalseNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit(false);
 
@@ -568,13 +568,13 @@ public function testSubmitSingleNonExpandedFalseNoChoices()
 
     public function testSubmitSingleNonExpandedObjectChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'choices' => $this->objectChoices,
             'choice_label' => 'name',
             'choice_value' => 'id',
-        ));
+        ]);
 
         // "id" value of the second entry
         $form->submit('2');
@@ -586,13 +586,13 @@ public function testSubmitSingleNonExpandedObjectChoices()
 
     public function testSubmitNullUsesDefaultEmptyData($emptyData = 'empty', $expectedData = null)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             // empty data must match string choice value
-            'choices' => array($emptyData),
+            'choices' => [$emptyData],
             'empty_data' => $emptyData,
-        ));
+        ]);
 
         $form->submit(null);
 
@@ -601,12 +601,12 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = 'empty', $expect
 
     public function testSubmitSingleChoiceWithEmptyDataAndInitialData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, 'initial', array(
+        $form = $this->factory->create(static::TESTED_TYPE, 'initial', [
             'multiple' => false,
             'expanded' => false,
-            'choices' => array('initial', 'test'),
+            'choices' => ['initial', 'test'],
             'empty_data' => 'test',
-        ));
+        ]);
 
         $form->submit(null);
 
@@ -615,54 +615,54 @@ public function testSubmitSingleChoiceWithEmptyDataAndInitialData()
 
     public function testSubmitMultipleChoiceWithEmptyData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
-            'choices' => array('test'),
-            'empty_data' => array('test'),
-        ));
+            'choices' => ['test'],
+            'empty_data' => ['test'],
+        ]);
 
         $form->submit(null);
 
-        $this->assertSame(array('test'), $form->getData());
+        $this->assertSame(['test'], $form->getData());
     }
 
     public function testSubmitMultipleChoiceWithEmptyDataAndInitialEmptyArray()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, [], [
             'multiple' => true,
             'expanded' => false,
-            'choices' => array('test'),
-            'empty_data' => array('test'),
-        ));
+            'choices' => ['test'],
+            'empty_data' => ['test'],
+        ]);
 
         $form->submit(null);
 
-        $this->assertSame(array('test'), $form->getData());
+        $this->assertSame(['test'], $form->getData());
     }
 
     public function testSubmitMultipleChoiceWithEmptyDataAndInitialData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array('initial'), array(
+        $form = $this->factory->create(static::TESTED_TYPE, ['initial'], [
             'multiple' => true,
             'expanded' => false,
-            'choices' => array('initial', 'test'),
-            'empty_data' => array('test'),
-        ));
+            'choices' => ['initial', 'test'],
+            'empty_data' => ['test'],
+        ]);
 
         $form->submit(null);
 
-        $this->assertSame(array('test'), $form->getData());
+        $this->assertSame(['test'], $form->getData());
     }
 
     public function testSubmitSingleChoiceExpandedWithEmptyData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
-            'choices' => array('test'),
+            'choices' => ['test'],
             'empty_data' => 'test',
-        ));
+        ]);
 
         $form->submit(null);
 
@@ -671,12 +671,12 @@ public function testSubmitSingleChoiceExpandedWithEmptyData()
 
     public function testSubmitSingleChoiceExpandedWithEmptyDataAndInitialData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, 'initial', array(
+        $form = $this->factory->create(static::TESTED_TYPE, 'initial', [
             'multiple' => false,
             'expanded' => true,
-            'choices' => array('initial', 'test'),
+            'choices' => ['initial', 'test'],
             'empty_data' => 'test',
-        ));
+        ]);
 
         $form->submit(null);
 
@@ -685,44 +685,44 @@ public function testSubmitSingleChoiceExpandedWithEmptyDataAndInitialData()
 
     public function testSubmitMultipleChoiceExpandedWithEmptyData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
-            'choices' => array('test'),
-            'empty_data' => array('test'),
-        ));
+            'choices' => ['test'],
+            'empty_data' => ['test'],
+        ]);
 
         $form->submit(null);
 
-        $this->assertSame(array('test'), $form->getData());
+        $this->assertSame(['test'], $form->getData());
     }
 
     public function testSubmitMultipleChoiceExpandedWithEmptyDataAndInitialEmptyArray()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, [], [
             'multiple' => true,
             'expanded' => true,
-            'choices' => array('test'),
-            'empty_data' => array('test'),
-        ));
+            'choices' => ['test'],
+            'empty_data' => ['test'],
+        ]);
 
         $form->submit(null);
 
-        $this->assertSame(array('test'), $form->getData());
+        $this->assertSame(['test'], $form->getData());
     }
 
     public function testSubmitMultipleChoiceExpandedWithEmptyDataAndInitialData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array('init'), array(
+        $form = $this->factory->create(static::TESTED_TYPE, ['init'], [
             'multiple' => true,
             'expanded' => true,
-            'choices' => array('init', 'test'),
-            'empty_data' => array('test'),
-        ));
+            'choices' => ['init', 'test'],
+            'empty_data' => ['test'],
+        ]);
 
         $form->submit(null);
 
-        $this->assertSame(array('test'), $form->getData());
+        $this->assertSame(['test'], $form->getData());
     }
 
     /**
@@ -730,11 +730,11 @@ public function testSubmitMultipleChoiceExpandedWithEmptyDataAndInitialData()
      */
     public function testLegacyNullChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => false,
             'choices' => null,
-        ));
+        ]);
         $this->assertNull($form->getConfig()->getOption('choices'));
         $this->assertFalse($form->getConfig()->getOption('multiple'));
         $this->assertFalse($form->getConfig()->getOption('expanded'));
@@ -742,31 +742,31 @@ public function testLegacyNullChoices()
 
     public function testSubmitMultipleNonExpanded()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
-        $form->submit(array('a', 'b'));
+        $form->submit(['a', 'b']);
 
-        $this->assertEquals(array('a', 'b'), $form->getData());
-        $this->assertEquals(array('a', 'b'), $form->getViewData());
+        $this->assertEquals(['a', 'b'], $form->getData());
+        $this->assertEquals(['a', 'b'], $form->getViewData());
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitMultipleNonExpandedEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
-        $form->submit(array());
+        $form->submit([]);
 
-        $this->assertSame(array(), $form->getData());
-        $this->assertSame(array(), $form->getViewData());
+        $this->assertSame([], $form->getData());
+        $this->assertSame([], $form->getViewData());
         $this->assertTrue($form->isSynchronized());
     }
 
@@ -775,26 +775,26 @@ public function testSubmitMultipleNonExpandedEmpty()
     // choices are available.
     public function testSubmitMultipleNonExpandedEmptyNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
-        $form->submit(array());
+        $form->submit([]);
 
-        $this->assertSame(array(), $form->getData());
-        $this->assertSame(array(), $form->getViewData());
+        $this->assertSame([], $form->getData());
+        $this->assertSame([], $form->getViewData());
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitMultipleNonExpandedInvalidScalarChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('foobar');
 
@@ -805,44 +805,44 @@ public function testSubmitMultipleNonExpandedInvalidScalarChoice()
 
     public function testSubmitMultipleNonExpandedInvalidArrayChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
-        $form->submit(array('a', 'foobar'));
+        $form->submit(['a', 'foobar']);
 
         $this->assertNull($form->getData());
-        $this->assertEquals(array('a', 'foobar'), $form->getViewData());
+        $this->assertEquals(['a', 'foobar'], $form->getViewData());
         $this->assertFalse($form->isSynchronized());
     }
 
     public function testSubmitMultipleNonExpandedObjectChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'choices' => $this->objectChoices,
             'choice_label' => 'name',
             'choice_value' => 'id',
-        ));
+        ]);
 
-        $form->submit(array('2', '3'));
+        $form->submit(['2', '3']);
 
-        $this->assertEquals(array($this->objectChoices[1], $this->objectChoices[2]), $form->getData());
-        $this->assertEquals(array('2', '3'), $form->getViewData());
+        $this->assertEquals([$this->objectChoices[1], $this->objectChoices[2]], $form->getData());
+        $this->assertEquals(['2', '3'], $form->getViewData());
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitSingleExpandedRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('b');
 
@@ -865,12 +865,12 @@ public function testSubmitSingleExpandedRequired()
 
     public function testSubmitSingleExpandedRequiredInvalidChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('foobar');
 
@@ -893,12 +893,12 @@ public function testSubmitSingleExpandedRequiredInvalidChoice()
 
     public function testSubmitSingleExpandedNonRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('b');
 
@@ -923,12 +923,12 @@ public function testSubmitSingleExpandedNonRequired()
 
     public function testSubmitSingleExpandedNonRequiredInvalidChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('foobar');
 
@@ -951,18 +951,18 @@ public function testSubmitSingleExpandedNonRequiredInvalidChoice()
 
     public function testSubmitSingleExpandedRequiredNull()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
             'choices' => $this->choices,
-        ));
+  
F438
      ]);
 
         $form->submit(null);
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
 
         $this->assertFalse($form[0]->getData());
@@ -982,35 +982,35 @@ public function testSubmitSingleExpandedRequiredNull()
     // choices are available.
     public function testSubmitSingleExpandedRequiredNullNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit(null);
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitSingleExpandedRequiredEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('');
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
 
         $this->assertFalse($form[0]->getData());
@@ -1030,35 +1030,35 @@ public function testSubmitSingleExpandedRequiredEmpty()
     // choices are available.
     public function testSubmitSingleExpandedRequiredEmptyNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit('');
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitSingleExpandedRequiredFalse()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit(false);
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
 
         $this->assertFalse($form[0]->getData());
@@ -1078,35 +1078,35 @@ public function testSubmitSingleExpandedRequiredFalse()
     // choices are available.
     public function testSubmitSingleExpandedRequiredFalseNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => true,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit(false);
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitSingleExpandedNonRequiredNull()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit(null);
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
 
         $this->assertTrue($form['placeholder']->getData());
@@ -1128,35 +1128,35 @@ public function testSubmitSingleExpandedNonRequiredNull()
     // choices are available.
     public function testSubmitSingleExpandedNonRequiredNullNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit(null);
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitSingleExpandedNonRequiredEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('');
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
 
         $this->assertTrue($form['placeholder']->getData());
@@ -1178,35 +1178,35 @@ public function testSubmitSingleExpandedNonRequiredEmpty()
     // choices are available.
     public function testSubmitSingleExpandedNonRequiredEmptyNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit('');
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitSingleExpandedNonRequiredFalse()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit(false);
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
 
         $this->assertTrue($form['placeholder']->getData());
@@ -1228,31 +1228,31 @@ public function testSubmitSingleExpandedNonRequiredFalse()
     // choices are available.
     public function testSubmitSingleExpandedNonRequiredFalseNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'required' => false,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
         $form->submit(false);
 
         $this->assertNull($form->getData());
         $this->assertSame('', $form->getViewData(), 'View data should always be a string');
-        $this->assertSame(array(), $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
+        $this->assertSame([], $form->getExtraData(), 'ChoiceType is compound when expanded, extra data should always be an array');
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitSingleExpandedWithEmptyChild()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
-            'choices' => array(
+            'choices' => [
                 'Empty' => '',
                 'Not empty' => 1,
-            ),
-        ));
+            ],
+        ]);
 
         $form->submit('');
 
@@ -1267,13 +1267,13 @@ public function testSubmitSingleExpandedWithEmptyChild()
 
     public function testSubmitSingleExpandedObjectChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'expanded' => true,
             'choices' => $this->objectChoices,
             'choice_label' => 'name',
             'choice_value' => 'id',
-        ));
+        ]);
 
         $form->submit('2');
 
@@ -1294,16 +1294,16 @@ public function testSubmitSingleExpandedObjectChoices()
 
     public function testSubmitMultipleExpanded()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
-        $form->submit(array('a', 'c'));
+        $form->submit(['a', 'c']);
 
-        $this->assertSame(array('a', 'c'), $form->getData());
-        $this->assertSame(array('a', 'c'), $form->getViewData());
+        $this->assertSame(['a', 'c'], $form->getData());
+        $this->assertSame(['a', 'c'], $form->getViewData());
         $this->assertEmpty($form->getExtraData());
         $this->assertTrue($form->isSynchronized());
 
@@ -1321,11 +1321,11 @@ public function testSubmitMultipleExpanded()
 
     public function testSubmitMultipleExpandedInvalidScalarChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
         $form->submit('foobar');
 
@@ -1348,16 +1348,16 @@ public function testSubmitMultipleExpandedInvalidScalarChoice()
 
     public function testSubmitMultipleExpandedInvalidArrayChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
-        $form->submit(array('a', 'foobar'));
+        $form->submit(['a', 'foobar']);
 
         $this->assertNull($form->getData());
-        $this->assertSame(array('a', 'foobar'), $form->getViewData());
+        $this->assertSame(['a', 'foobar'], $form->getViewData());
         $this->assertEmpty($form->getExtraData());
         $this->assertFalse($form->isSynchronized());
 
@@ -1375,15 +1375,15 @@ public function testSubmitMultipleExpandedInvalidArrayChoice()
 
     public function testSubmitMultipleExpandedEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'choices' => $this->choices,
-        ));
+        ]);
 
-        $form->submit(array());
+        $form->submit([]);
 
-        $this->assertSame(array(), $form->getData());
+        $this->assertSame([], $form->getData());
         $this->assertTrue($form->isSynchronized());
 
         $this->assertFalse($form[0]->getData());
@@ -1403,33 +1403,33 @@ public function testSubmitMultipleExpandedEmpty()
     // choices are available.
     public function testSubmitMultipleExpandedEmptyNoChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
-            'choices' => array(),
-        ));
+            'choices' => [],
+        ]);
 
-        $form->submit(array());
+        $form->submit([]);
 
-        $this->assertSame(array(), $form->getData());
+        $this->assertSame([], $form->getData());
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSubmitMultipleExpandedWithEmptyChild()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
-            'choices' => array(
+            'choices' => [
                 'Empty' => '',
                 'Not Empty' => 1,
                 'Not Empty 2' => 2,
-            ),
-        ));
+            ],
+        ]);
 
-        $form->submit(array('', '2'));
+        $form->submit(['', '2']);
 
-        $this->assertSame(array('', 2), $form->getData());
+        $this->assertSame(['', 2], $form->getData());
         $this->assertTrue($form->isSynchronized());
 
         $this->assertTrue($form[0]->getData());
@@ -1442,17 +1442,17 @@ public function testSubmitMultipleExpandedWithEmptyChild()
 
     public function testSubmitMultipleExpandedObjectChoices()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => true,
             'choices' => $this->objectChoices,
             'choice_label' => 'name',
             'choice_value' => 'id',
-        ));
+        ]);
 
-        $form->submit(array('1', '2'));
+        $form->submit(['1', '2']);
 
-        $this->assertSame(array($this->objectChoices[0], $this->objectChoices[1]), $form->getData());
+        $this->assertSame([$this->objectChoices[0], $this->objectChoices[1]], $form->getData());
         $this->assertTrue($form->isSynchronized());
 
         $this->assertTrue($form[0]->getData());
@@ -1469,25 +1469,25 @@ public function testSubmitMultipleExpandedObjectChoices()
 
     public function testSubmitMultipleChoicesInts()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'choices' => array_flip($this->numericChoicesFlipped),
-        ));
+        ]);
 
-        $form->submit(array(1, 2));
+        $form->submit([1, 2]);
 
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testSingleSelectedObjectChoices()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, $this->objectChoices[3], array(
+        $view = $this->factory->create(static::TESTED_TYPE, $this->objectChoices[3], [
             'multiple' => false,
             'expanded' => false,
             'choices' => $this->objectChoices,
             'choice_label' => 'name',
             'choice_value' => 'id',
-        ))
+        ])
             ->createView();
 
         /** @var callable $selectedChecker */
@@ -1499,13 +1499,13 @@ public function testSingleSelectedObjectChoices()
 
     public function testMultipleSelectedObjectChoices()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, array($this->objectChoices[3]), array(
+        $view = $this->factory->create(static::TESTED_TYPE, [$this->objectChoices[3]], [
             'multiple' => true,
             'expanded' => false,
             'choices' => $this->objectChoices,
             'choice_label' => 'name',
             'choice_value' => 'id',
-        ))
+        ])
             ->createView();
 
         /** @var callable $selectedChecker */
@@ -1517,9 +1517,9 @@ public function testMultipleSelectedObjectChoices()
 
     public function testPassRequiredToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertTrue($view->vars['required']);
@@ -1527,10 +1527,10 @@ public function testPassRequiredToView()
 
     public function testPassNonRequiredToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertFalse($view->vars['required']);
@@ -1538,10 +1538,10 @@ public function testPassNonRequiredToView()
 
     public function testPassMultipleToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertTrue($view->vars['multiple']);
@@ -1549,10 +1549,10 @@ public function testPassMultipleToView()
 
     public function testPassExpandedToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'expanded' => true,
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertTrue($view->vars['expanded']);
@@ -1560,9 +1560,9 @@ public function testPassExpandedToView()
 
     public function testPassChoiceTranslationDomainToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertNull($view->vars['choice_translation_domain']);
@@ -1570,10 +1570,10 @@ public function testPassChoiceTranslationDomainToView()
 
     public function testChoiceTranslationDomainWithTrueValueToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->choices,
             'choice_translation_domain' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertNull($view->vars['choice_translation_domain']);
@@ -1581,10 +1581,10 @@ public function testChoiceTranslationDomainWithTrueValueToView()
 
     public function testDefaultChoiceTranslationDomainIsSameAsTranslationDomainToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->choices,
             'translation_domain' => 'foo',
-        ))
+        ])
             ->createView();
 
         $this->assertEquals('foo', $view->vars['choice_translation_domain']);
@@ -1593,9 +1593,9 @@ public function testDefaultChoiceTranslationDomainIsSameAsTranslationDomainToVie
     public function testInheritChoiceTranslationDomainFromParent()
     {
         $view = $this->factory
-            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, array(
+            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, [
                 'translation_domain' => 'domain',
-            ))
+            ])
             ->add('child', static::TESTED_TYPE)
             ->getForm()
             ->createView();
@@ -1605,11 +1605,11 @@ public function testInheritChoiceTranslationDomainFromParent()
 
     public function testPlaceholderIsNullByDefaultIfRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'required' => true,
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertNull($view->vars['placeholder']);
@@ -1617,11 +1617,11 @@ public function testPlaceholderIsNullByDefaultIfRequired()
 
     public function testPlaceholderIsEmptyStringByDefaultIfNotRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => false,
             'required' => false,
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('', $view->vars['placeholder']);
@@ -1632,13 +1632,13 @@ public function testPlaceholderIsEmptyStringByDefaultIfNotRequired()
      */
     public function testPassPlaceholderToView($multiple, $expanded, $required, $placeholder, $viewValue)
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => $multiple,
             'expanded' => $expanded,
             'required' => $required,
             'placeholder' => $placeholder,
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertSame($viewValue, $view->vars['placeholder']);
@@ -1650,13 +1650,13 @@ public function testPassPlaceholderToView($multiple, $expanded, $required, $plac
      */
     public function testDontPassPlaceholderIfContainedInChoices($multiple, $expanded, $required, $placeholder, $viewValue)
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => $multiple,
             'expanded' => $expanded,
             'required' => $required,
             'placeholder' => $placeholder,
-            'choices' => array('Empty' => '', 'A' => 'a'),
-        ))
+            'choices' => ['Empty' => '', 'A' => 'a'],
+        ])
             ->createView();
 
         $this->assertNull($view->vars['placeholder']);
@@ -1665,138 +1665,138 @@ public function testDontPassPlaceholderIfContainedInChoices($multiple, $expanded
 
     public function getOptionsWithPlaceholder()
     {
-        return array(
+        return [
             // single non-expanded
-            array(false, false, false, 'foobar', 'foobar'),
-            array(false, false, false, '', ''),
-            array(false, false, false, null, null),
-            array(false, false, false, false, null),
-            array(false, false, true, 'foobar', 'foobar'),
-            array(false, false, true, '', ''),
-            array(false, false, true, null, null),
-            array(false, false, true, false, null),
+            [false, false, false, 'foobar', 'foobar'],
+            [false, false, false, '', ''],
+            [false, false, false, null, null],
+            [false, false, false, false, null],
+            [false, false, true, 'foobar', 'foobar'],
+            [false, false, true, '', ''],
+            [false, false, true, null, null],
+            [false, false, true, false, null],
             // single expanded
-            array(false, true, false, 'foobar', 'foobar'),
+            [false, true, false, 'foobar', 'foobar'],
             // radios should never have an empty label
-            array(false, true, false, '', 'None'),
-            array(false, true, false, null, null),
-            array(false, true, false, false, null),
+            [false, true, false, '', 'None'],
+            [false, true, false, null, null],
+            [false, true, false, false, null],
             // required radios should never have a placeholder
-            array(false, true, true, 'foobar', null),
-            array(false, true, true, '', null),
-            array(false, true, true, null, null),
-            array(false, true, true, false, null),
+            [false, true, true, 'foobar', null],
+            [false, true, true, '', null],
+            [false, true, true, null, null],
+            [false, true, true, false, null],
             // multiple non-expanded
-            array(true, false, false, 'foobar', null),
-            array(true, false, false, '', null),
-            array(true, false, false, null, null),
-            array(true, false, false, false, null),
-            array(true, false, true, 'foobar', null),
-            array(true, false, true, '', null),
-            array(true, false, true, null, null),
-            array(true, false, true, false, null),
+            [true, false, false, 'foobar', null],
+            [true, false, false, '', null],
+            [true, false, false, null, null],
+            [true, false, false, false, null],
+            [true, false, true, 'foobar', null],
+            [true, false, true, '', null],
+            [true, false, true, null, null],
+            [true, false, true, false, null],
             // multiple expanded
-            array(true, true, false, 'foobar', null),
-            array(true, true, false, '', null),
-            array(true, true, false, null, null),
-            array(true, true, false, false, null),
-            array(true, true, true, 'foobar', null),
-            array(true, true, true, '', null),
-            array(true, true, true, null, null),
-            array(true, true, true, false, null),
-        );
+            [true, true, false, 'foobar', null],
+            [true, true, false, '', null],
+            [true, true, false, null, null],
+            [true, true, false, false, null],
+            [true, true, true, 'foobar', null],
+            [true, true, true, '', null],
+            [true, true, true, null, null],
+            [true, true, true, false, null],
+        ];
     }
 
     public function testPassChoicesToView()
     {
-        $choices = array('A' => 'a', 'B' => 'b', 'C' => 'c', 'D' => 'd');
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $choices = ['A' => 'a', 'B' => 'b', 'C' => 'c', 'D' => 'd'];
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $choices,
-        ))
+        ])
             ->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView('a', 'a', 'A'),
             new ChoiceView('b', 'b', 'B'),
             new ChoiceView('c', 'c', 'C'),
             new ChoiceView('d', 'd', 'D'),
-        ), $view->vars['choices']);
+        ], $view->vars['choices']);
     }
 
     public function testPassPreferredChoicesToView()
     {
-        $choices = array('A' => 'a', 'B' => 'b', 'C' => 'c', 'D' => 'd');
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $choices = ['A' => 'a', 'B' => 'b', 'C' => 'c', 'D' => 'd'];
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $choices,
-            'preferred_choices' => array('b', 'd'),
-        ))
+            'preferred_choices' => ['b', 'd'],
+        ])
             ->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             0 => new ChoiceView('a', 'a', 'A'),
             2 => new ChoiceView('c', 'c', 'C'),
-        ), $view->vars['choices']);
-        $this->assertEquals(array(
+        ], $view->vars['choices']);
+        $this->assertEquals([
             1 => new ChoiceView('b', 'b', 'B'),
             3 => new ChoiceView('d', 'd', 'D'),
-        ), $view->vars['preferred_choices']);
+        ], $view->vars['preferred_choices']);
     }
 
     public function testPassHierarchicalChoicesToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->groupedChoices,
-            'preferred_choices' => array('b', 'd'),
-        ))
+            'preferred_choices' => ['b', 'd'],
+        ])
             ->createView();
 
-        $this->assertEquals(array(
-            'Symfony' => new ChoiceGroupView('Symfony', array(
+        $this->assertEquals([
+            'Symfony' => new ChoiceGroupView('Symfony', [
                 0 => new ChoiceView('a', 'a', 'Bernhard'),
                 2 => new ChoiceView('c', 'c', 'Kris'),
-            )),
-            'Doctrine' => new ChoiceGroupView('Doctrine', array(
+            ]),
+            'Doctrine' => new ChoiceGroupView('Doctrine', [
                 4 => new ChoiceView('e', 'e', 'Roman'),
-            )),
-        ), $view->vars['choices']);
-        $this->assertEquals(array(
-            'Symfony' => new ChoiceGroupView('Symfony', array(
+            ]),
+        ], $view->vars['choices']);
+        $this->assertEquals([
+            'Symfony' => new ChoiceGroupView('Symfony', [
                 1 => new ChoiceView('b', 'b', 'Fabien'),
-            )),
-            'Doctrine' => new ChoiceGroupView('Doctrine', array(
+            ]),
+            'Doctrine' => new ChoiceGroupView('Doctrine', [
                 3 => new ChoiceView('d', 'd', 'Jon'),
-            )),
-        ), $view->vars['preferred_choices']);
+            ]),
+        ], $view->vars['preferred_choices']);
     }
 
     public function testPassChoiceDataToView()
     {
-        $obj1 = (object) array('value' => 'a', 'label' => 'A');
-        $obj2 = (object) array('value' => 'b', 'label' => 'B');
-        $obj3 = (object) array('value' => 'c', 'label' => 'C');
-        $obj4 = (object) array('value' => 'd', 'label' => 'D');
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
-            'choices' => array($obj1, $obj2, $obj3, $obj4),
+        $obj1 = (object) ['value' => 'a', 'label' => 'A'];
+        $obj2 = (object) ['value' => 'b', 'label' => 'B'];
+        $obj3 = (object) ['value' => 'c', 'label' => 'C'];
+        $obj4 = (object) ['value' => 'd', 'label' => 'D'];
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
+            'choices' => [$obj1, $obj2, $obj3, $obj4],
             'choice_label' => 'label',
             'choice_value' => 'value',
-        ))
+        ])
             ->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView($obj1, 'a', 'A'),
             new ChoiceView($obj2, 'b', 'B'),
             new ChoiceView($obj3, 'c', 'C'),
             new ChoiceView($obj4, 'd', 'D'),
-        ), $view->vars['choices']);
+        ], $view->vars['choices']);
     }
 
     public function testAdjustFullNameForMultipleNonExpanded()
     {
-        $view = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $view = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'multiple' => true,
             'expanded' => false,
             'choices' => $this->choices,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('name[]', $view->vars['full_name']);
@@ -1805,26 +1805,26 @@ public function testAdjustFullNameForMultipleNonExpanded()
     // https://github.com/symfony/symfony/issues/3298
     public function testInitializeWithEmptyChoices()
     {
-        $this->assertInstanceOf('Symfony\Component\Form\FormInterface', $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
-            'choices' => array(),
-        )));
+        $this->assertInstanceOf('Symfony\Component\Form\FormInterface', $this->factory->createNamed('name', static::TESTED_TYPE, null, [
+            'choices' => [],
+        ]));
     }
 
     public function testInitializeWithDefaultObjectChoice()
     {
-        $obj1 = (object) array('value' => 'a', 'label' => 'A');
-        $obj2 = (object) array('value' => 'b', 'label' => 'B');
-        $obj3 = (object) array('value' => 'c', 'label' => 'C');
-        $obj4 = (object) array('value' => 'd', 'label' => 'D');
+        $obj1 = (object) ['value' => 'a', 'label' => 'A'];
+        $obj2 = (object) ['value' => 'b', 'label' => 'B'];
+        $obj3 = (object) ['value' => 'c', 'label' => 'C'];
+        $obj4 = (object) ['value' => 'd', 'label' => 'D'];
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'choices' => array($obj1, $obj2, $obj3, $obj4),
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'choices' => [$obj1, $obj2, $obj3, $obj4],
             'choice_label' => 'label',
             'choice_value' => 'value',
             // Used to break because "data_class" was inferred, which needs to
             // remain null in every case (because it refers to the view format)
             'data' => $obj3,
-        ));
+        ]);
 
         // Trigger data initialization
         $this->assertSame('c', $form->getViewData());
@@ -1840,12 +1840,12 @@ public function testInitializeWithDefaultObjectChoice()
     public function testCustomChoiceTypeDoesNotInheritChoiceLabels()
     {
         $builder = $this->factory->createBuilder();
-        $builder->add('choice', static::TESTED_TYPE, array(
-                'choices' => array(
+        $builder->add('choice', static::TESTED_TYPE, [
+                'choices' => [
                     '1' => '1',
                     '2' => '2',
-                ),
-            )
+                ],
+            ]
         );
         $builder->add('subChoice', 'Symfony\Component\Form\Tests\Fixtures\ChoiceSubType');
         $form = $builder->getForm();
@@ -1861,11 +1861,11 @@ public function testCustomChoiceTypeDoesNotInheritChoiceLabels()
      */
     public function testSubmitInvalidNestedValue($multiple, $expanded, $submissionData)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'choices' => $this->choices,
             'multiple' => $multiple,
             'expanded' => $expanded,
-        ));
+        ]);
 
         $form->submit($submissionData);
         $this->assertFalse($form->isSynchronized());
@@ -1874,20 +1874,20 @@ public function testSubmitInvalidNestedValue($multiple, $expanded, $submissionDa
 
     public function invalidNestedValueTestMatrix()
     {
-        return array(
-            'non-multiple, non-expanded' => array(false, false, array(array())),
-            'non-multiple, expanded' => array(false, true, array(array())),
-            'multiple, non-expanded' => array(true, false, array(array())),
-            'multiple, expanded' => array(true, true, array(array())),
-        );
+        return [
+            'non-multiple, non-expanded' => [false, false, [[]]],
+            'non-multiple, expanded' => [false, true, [[]]],
+            'multiple, non-expanded' => [true, false, [[]]],
+            'multiple, expanded' => [true, true, [[]]],
+        ];
     }
 
     public function testInheritTranslationDomainFromParent()
     {
         $view = $this->factory
-            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, array(
+            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, [
                 'translation_domain' => 'domain',
-            ))
+            ])
             ->add('child', static::TESTED_TYPE)
             ->getForm()
             ->createView();
@@ -1897,9 +1897,9 @@ public function testInheritTranslationDomainFromParent()
 
     public function testPassTranslationDomainToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'translation_domain' => 'domain',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('domain', $view->vars['translation_domain']);
@@ -1908,12 +1908,12 @@ public function testPassTranslationDomainToView()
     public function testPreferOwnTranslationDomain()
     {
         $view = $this->factory
-            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, array(
+            ->createNamedBuilder('parent', FormTypeTest::TESTED_TYPE, null, [
                 'translation_domain' => 'parent_domain',
-            ))
-            ->add('child', static::TESTED_TYPE, array(
+            ])
+            ->add('child', static::TESTED_TYPE, [
                 'translation_domain' => 'domain',
-            ))
+            ])
             ->getForm()
             ->createView();
 
@@ -1940,9 +1940,9 @@ public function testPassMultipartFalseToView()
 
     public function testPassLabelToView()
     {
-        $view = $this->factory->createNamed('__test___field', static::TESTED_TYPE, null, array(
+        $view = $this->factory->createNamed('__test___field', static::TESTED_TYPE, null, [
             'label' => 'My label',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('My label', $view->vars['label']);
@@ -1974,9 +1974,9 @@ public function testPassIdAndNameToViewWithParent()
 
     public function testPassDisabledAsOption()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'disabled' => true,
-        ));
+        ]);
 
         $this->assertTrue($form->isDisabled());
     }
@@ -2006,13 +2006,13 @@ public function testStripLeadingUnderscoresAndDigitsFromId()
      */
     public function testTrimIsDisabled($multiple, $expanded)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => $multiple,
             'expanded' => $expanded,
-            'choices' => array(
+            'choices' => [
                 'a' => '1',
-            ),
-        ));
+            ],
+        ]);
 
         $submittedData = ' 1';
 
@@ -2030,13 +2030,13 @@ public function testSubmitValueWithWhiteSpace($multiple, $expanded)
     {
         $valueWhitWhiteSpace = '1 ';
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => $multiple,
             'expanded' => $expanded,
-            'choices' => array(
+            'choices' => [
                 'a' => $valueWhitWhiteSpace,
-            ),
-        ));
+            ],
+        ]);
 
         $form->submit($multiple ? (array) $valueWhitWhiteSpace : $valueWhitWhiteSpace);
 
@@ -2046,11 +2046,11 @@ public function testSubmitValueWithWhiteSpace($multiple, $expanded)
 
     public function provideTrimCases()
     {
-        return array(
-            'Simple' => array(false, false),
-            'Multiple' => array(true, false),
-            'Simple expanded' => array(false, true),
-            'Multiple expanded' => array(true, true),
-        );
+        return [
+            'Simple' => [false, false],
+            'Multiple' => [true, false],
+            'Simple expanded' => [false, true],
+            'Multiple expanded' => [true, true],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
index 9393c99dc0fd..50355a1d6454 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
@@ -20,22 +20,22 @@ class CollectionTypeTest extends BaseTypeTest
 
     public function testContainsNoChildByDefault()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
-        ));
+        ]);
 
         $this->assertCount(0, $form);
     }
 
     public function testSetDataAdjustsSize()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
-            'entry_options' => array(
-                'attr' => array('maxlength' => 20),
-            ),
-        ));
-        $form->setData(array('foo@foo.com', 'foo@bar.com'));
+            'entry_options' => [
+                'attr' => ['maxlength' => 20],
+            ],
+        ]);
+        $form->setData(['foo@foo.com', 'foo@bar.com']);
 
         $this->assertInstanceOf('Symfony\Component\Form\Form', $form[0]);
         $this->assertInstanceOf('Symfony\Component\Form\Form', $form[1]);
@@ -47,7 +47,7 @@ public function testSetDataAdjustsSize()
         $this->assertEquals(20, $formAttrs0['maxlength']);
         $this->assertEquals(20, $formAttrs1['maxlength']);
 
-        $form->setData(array('foo@baz.com'));
+        $form->setData(['foo@baz.com']);
         $this->assertInstanceOf('Symfony\Component\Form\Form', $form[0]);
         $this->assertArrayNotHasKey(1, $form);
         $this->assertCount(1, $form);
@@ -58,20 +58,20 @@ public function testSetDataAdjustsSize()
 
     public function testThrowsExceptionIfObjectIsNotTraversable()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
-        ));
+        ]);
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('Symfony\Component\Form\Exception\UnexpectedTypeException');
         $form->setData(new \stdClass());
     }
 
     public function testNotResizedIfSubmittedWithMissingData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
-        ));
-        $form->setData(array('foo@foo.com', 'bar@bar.com'));
-        $form->submit(array('foo@bar.com'));
+        ]);
+        $form->setData(['foo@foo.com', 'bar@bar.com']);
+        $form->submit(['foo@bar.com']);
 
         $this->assertTrue($form->has('0'));
         $this->assertTrue($form->has('1'));
@@ -81,106 +81,106 @@ public function testNotResizedIfSubmittedWithMissingData()
 
     public function testResizedDownIfSubmittedWithMissingDataAndAllowDelete()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
             'allow_delete' => true,
-        ));
-        $form->setData(array('foo@foo.com', 'bar@bar.com'));
-        $form->submit(array('foo@foo.com'));
+        ]);
+        $form->setData(['foo@foo.com', 'bar@bar.com']);
+        $form->submit(['foo@foo.com']);
 
         $this->assertTrue($form->has('0'));
         $this->assertFalse($form->has('1'));
         $this->assertEquals('foo@foo.com', $form[0]->getData());
-        $this->assertEquals(array('foo@foo.com'), $form->getData());
+        $this->assertEquals(['foo@foo.com'], $form->getData());
     }
 
     public function testResizedDownIfSubmittedWithEmptyDataAndDeleteEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
             'allow_delete' => true,
             'delete_empty' => true,
-        ));
+        ]);
 
-        $form->setData(array('foo@foo.com', 'bar@bar.com'));
-        $form->submit(array('foo@foo.com', ''));
+        $form->setData(['foo@foo.com', 'bar@bar.com']);
+        $form->submit(['foo@foo.com', '']);
 
         $this->assertTrue($form->has('0'));
         $this->assertFalse($form->has('1'));
         $this->assertEquals('foo@foo.com', $form[0]->getData());
-        $this->assertEquals(array('foo@foo.com'), $form->getData());
+        $this->assertEquals(['foo@foo.com'], $form->getData());
     }
 
     public function testResizedDownWithDeleteEmptyCallable()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => AuthorType::class,
             'allow_delete' => true,
             'delete_empty' => function (Author $obj = null) {
                 return null === $obj || empty($obj->firstName);
             },
-        ));
+        ]);
 
-        $form->setData(array(new Author('Bob'), new Author('Alice')));
-        $form->submit(array(array('firstName' => 'Bob'), array('firstName' => '')));
+        $form->setData([new Author('Bob'), new Author('Alice')]);
+        $form->submit([['firstName' => 'Bob'], ['firstName' => '']]);
 
         $this->assertTrue($form->has('0'));
         $this->assertFalse($form->has('1'));
         $this->assertEquals(new Author('Bob'), $form[0]->getData());
-        $this->assertEquals(array(new Author('Bob')), $form->getData());
+        $this->assertEquals([new Author('Bob')], $form->getData());
     }
 
     public function testResizedDownIfSubmittedWithCompoundEmptyDataDeleteEmptyAndNoDataClass()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => AuthorType::class,
             // If the field is not required, no new Author will be created if the
             // form is completely empty
-            'entry_options' => array('data_class' => null),
+            'entry_options' => ['data_class' => null],
             'allow_add' => true,
             'allow_delete' => true,
             'delete_empty' => function ($author) {
                 return empty($author['firstName']);
             },
-        ));
-        $form->setData(array(array('firstName' => 'first', 'lastName' => 'last')));
-        $form->submit(array(
-            array('firstName' => 's_first', 'lastName' => 's_last'),
-            array('firstName' => '', 'lastName' => ''),
-        ));
+        ]);
+        $form->setData([['firstName' => 'first', 'lastName' => 'last']]);
+        $form->submit([
+            ['firstName' => 's_first', 'lastName' => 's_last'],
+            ['firstName' => '', 'lastName' => ''],
+        ]);
         $this->assertTrue($form->has('0'));
         $this->assertFalse($form->has('1'));
-        $this->assertEquals(array('firstName' => 's_first', 'lastName' => 's_last'), $form[0]->getData());
-        $this->assertEquals(array(array('firstName' => 's_first', 'lastName' => 's_last')), $form->getData());
+        $this->assertEquals(['firstName' => 's_first', 'lastName' => 's_last'], $form[0]->getData());
+        $this->assertEquals([['firstName' => 's_first', 'lastName' => 's_last']], $form->getData());
     }
 
     public function testDontAddEmptyDataIfDeleteEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
             'allow_add' => true,
             'delete_empty' => true,
-        ));
+        ]);
 
-        $form->setData(array('foo@foo.com'));
-        $form->submit(array('foo@foo.com', ''));
+        $form->setData(['foo@foo.com']);
+        $form->submit(['foo@foo.com', '']);
 
         $this->assertTrue($form->has('0'));
         $this->assertFalse($form->has('1'));
         $this->assertEquals('foo@foo.com', $form[0]->getData());
-        $this->assertEquals(array('foo@foo.com'), $form->getData());
+        $this->assertEquals(['foo@foo.com'], $form->getData());
     }
 
     public function testNoDeleteEmptyIfDeleteNotAllowed()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
             'allow_delete' => false,
             'delete_empty' => true,
-        ));
+        ]);
 
-        $form->setData(array('foo@foo.com'));
-        $form->submit(array(''));
+        $form->setData(['foo@foo.com']);
+        $form->submit(['']);
 
         $this->assertTrue($form->has('0'));
         $this->assertEquals('', $form[0]->getData());
@@ -188,34 +188,34 @@ public function testNoDeleteEmptyIfDeleteNotAllowed()
 
     public function testResizedDownIfSubmittedWithCompoundEmptyDataAndDeleteEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => 'Symfony\Component\Form\Tests\Fixtures\AuthorType',
             // If the field is not required, no new Author will be created if the
             // form is completely empty
-            'entry_options' => array('required' => false),
+            'entry_options' => ['required' => false],
             'allow_add' => true,
             'delete_empty' => true,
-        ));
+        ]);
 
-        $form->setData(array(new Author('first', 'last')));
-        $form->submit(array(
-            array('firstName' => 's_first', 'lastName' => 's_last'),
-            array('firstName' => '', 'lastName' => ''),
-        ));
+        $form->setData([new Author('first', 'last')]);
+        $form->submit([
+            ['firstName' => 's_first', 'lastName' => 's_last'],
+            ['firstName' => '', 'lastName' => ''],
+        ]);
 
         $this->assertTrue($form->has('0'));
         $this->assertFalse($form->has('1'));
         $this->assertEquals(new Author('s_first', 's_last'), $form[0]->getData());
-        $this->assertEquals(array(new Author('s_first', 's_last')), $form->getData());
+        $this->assertEquals([new Author('s_first', 's_last')], $form->getData());
     }
 
     public function testNotResizedIfSubmittedWithExtraData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
-        ));
-        $form->setData(array('foo@bar.com'));
-        $form->submit(array('foo@foo.com', 'bar@bar.com'));
+        ]);
+        $form->setData(['foo@bar.com']);
+        $form->submit(['foo@foo.com', 'bar@bar.com']);
 
         $this->assertTrue($form->has('0'));
         $this->assertFalse($form->has('1'));
@@ -224,27 +224,27 @@ public function testNotResizedIfSubmittedWithExtraData()
 
     public function testResizedUpIfSubmittedWithExtraDataAndAllowAdd()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => TextTypeTest::TESTED_TYPE,
             'allow_add' => true,
-        ));
-        $form->setData(array('foo@bar.com'));
-        $form->submit(array('foo@bar.com', 'bar@bar.com'));
+        ]);
+        $form->setData(['foo@bar.com']);
+        $form->submit(['foo@bar.com', 'bar@bar.com']);
 
         $this->assertTrue($form->has('0'));
         $this->assertTrue($form->has('1'));
         $this->assertEquals('foo@bar.com', $form[0]->getData());
         $this->assertEquals('bar@bar.com', $form[1]->getData());
-        $this->assertEquals(array('foo@bar.com', 'bar@bar.com'), $form->getData());
+        $this->assertEquals(['foo@bar.com', 'bar@bar.com'], $form->getData());
     }
 
     public function testAllowAddButNoPrototype()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => FormTypeTest::TESTED_TYPE,
             'allow_add' => true,
             'prototype' => false,
-        ));
+        ]);
 
         $this->assertFalse($form->has('__name__'));
     }
@@ -252,11 +252,11 @@ public function testAllowAddButNoPrototype()
     public function testPrototypeMultipartPropagation()
     {
         $form = $this->factory
-            ->create(static::TESTED_TYPE, null, array(
+            ->create(static::TESTED_TYPE, null, [
                 'entry_type' => FileTypeTest::TESTED_TYPE,
                 'allow_add' => true,
                 'prototype' => true,
-            ))
+            ])
         ;
 
         $this->assertTrue($form->createView()->vars['multipart']);
@@ -264,11 +264,11 @@ public function testPrototypeMultipartPropagation()
 
     public function testGetDataDoesNotContainsPrototypeNameBeforeDataAreSet()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, [], [
             'entry_type' => FileTypeTest::TESTED_TYPE,
             'prototype' => true,
             'allow_add' => true,
-        ));
+        ]);
 
         $data = $form->getData();
         $this->assertArrayNotHasKey('__name__', $data);
@@ -276,61 +276,61 @@ public function testGetDataDoesNotContainsPrototypeNameBeforeDataAreSet()
 
     public function testGetDataDoesNotContainsPrototypeNameAfterDataAreSet()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, [], [
             'entry_type' => FileTypeTest::TESTED_TYPE,
             'allow_add' => true,
             'prototype' => true,
-        ));
+        ]);
 
-        $form->setData(array('foobar.png'));
+        $form->setData(['foobar.png']);
         $data = $form->getData();
         $this->assertArrayNotHasKey('__name__', $data);
     }
 
     public function testPrototypeNameOption()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => FormTypeTest::TESTED_TYPE,
             'prototype' => true,
             'allow_add' => true,
-        ));
+        ]);
 
         $this->assertSame('__name__', $form->getConfig()->getAttribute('prototype')->getName(), '__name__ is the default');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'entry_type' => FormTypeTest::TESTED_TYPE,
             'prototype' => true,
             'allow_add' => true,
             'prototype_name' => '__test__',
-        ));
+        ]);
 
         $this->assertSame('__test__', $form->getConfig()->getAttribute('prototype')->getName());
     }
 
     public function testPrototypeDefaultLabel()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, [], [
             'entry_type' => FileTypeTest::TESTED_TYPE,
             'allow_add' => true,
             'prototype' => true,
             'prototype_name' => '__test__',
-        ));
+        ]);
 
         $this->assertSame('__test__label__', $form->createView()->vars['prototype']->vars['label']);
     }
 
     public function testPrototypeData()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, [], [
             'allow_add' => true,
             'prototype' => true,
             'prototype_data' => 'foo',
             'entry_type' => TextTypeTest::TESTED_TYPE,
-            'entry_options' => array(
+            'entry_options' => [
                 'data' => 'bar',
                 'label' => false,
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertSame('foo', $form->createView()->vars['prototype']->vars['value']);
         $this->assertFalse($form->createView()->vars['prototype']->vars['label']);
@@ -338,25 +338,25 @@ public function testPrototypeData()
 
     public function testPrototypeDefaultRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, [], [
             'entry_type' => FileTypeTest::TESTED_TYPE,
             'allow_add' => true,
             'prototype' => true,
             'prototype_name' => '__test__',
-        ));
+        ]);
 
         $this->assertTrue($form->createView()->vars['prototype']->vars['required']);
     }
 
     public function testPrototypeSetNotRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, [], [
             'entry_type' => FileTypeTest::TESTED_TYPE,
             'allow_add' => true,
             'prototype' => true,
             'prototype_name' => '__test__',
             'required' => false,
-        ));
+        ]);
 
         $this->assertFalse($form->createView()->vars['required'], 'collection is not required');
         $this->assertFalse($form->createView()->vars['prototype']->vars['required'], '"prototype" should not be required');
@@ -364,16 +364,16 @@ public function testPrototypeSetNotRequired()
 
     public function testPrototypeSetNotRequiredIfParentNotRequired()
     {
-        $child = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $child = $this->factory->create(static::TESTED_TYPE, [], [
             'entry_type' => FileTypeTest::TESTED_TYPE,
             'allow_add' => true,
             'prototype' => true,
             'prototype_name' => '__test__',
-        ));
+        ]);
 
-        $parent = $this->factory->create(FormTypeTest::TESTED_TYPE, array(), array(
+        $parent = $this->factory->create(FormTypeTest::TESTED_TYPE, [], [
             'required' => false,
-        ));
+        ]);
 
         $child->setParent($parent);
         $this->assertFalse($parent->createView()->vars['required'], 'Parent is not required');
@@ -383,19 +383,19 @@ public function testPrototypeSetNotRequiredIfParentNotRequired()
 
     public function testPrototypeNotOverrideRequiredByEntryOptionsInFavorOfParent()
     {
-        $child = $this->factory->create(static::TESTED_TYPE, array(), array(
+        $child = $this->factory->create(static::TESTED_TYPE, [], [
             'entry_type' => FileTypeTest::TESTED_TYPE,
             'allow_add' => true,
             'prototype' => true,
             'prototype_name' => '__test__',
-            'entry_options' => array(
+            'entry_options' => [
                 'required' => true,
-            ),
-        ));
+            ],
+        ]);
 
-        $parent = $this->factory->create(FormTypeTest::TESTED_TYPE, array(), array(
+        $parent = $this->factory->create(FormTypeTest::TESTED_TYPE, [], [
             'required' => false,
-        ));
+        ]);
 
         $child->setParent($parent);
 
@@ -406,10 +406,10 @@ public function testPrototypeN
10000
otOverrideRequiredByEntryOptionsInFavorOfParent()
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        parent::testSubmitNull(array(), array(), array());
+        parent::testSubmitNull([], [], []);
     }
 
-    public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expectedData = array())
+    public function testSubmitNullUsesDefaultEmptyData($emptyData = [], $expectedData = [])
     {
         // resize form listener always set an empty array
         parent::testSubmitNullUsesDefaultEmptyData($emptyData, $expectedData);
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php
index 9831f795895c..96fce79f21d3 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php
@@ -44,7 +44,7 @@ public function testUnknownCountryIsNotIncluded()
         $choices = $this->factory->create(static::TESTED_TYPE, 'country')
             ->createView()->vars['choices'];
 
-        $countryCodes = array();
+        $countryCodes = [];
 
         foreach ($choices as $choice) {
             $countryCodes[] = $choice->value;
@@ -67,6 +67,6 @@ public function testInvalidChoiceValuesAreDropped()
     {
         $type = new CountryType();
 
-        $this->assertSame(array(), $type->loadChoicesForValues(array('foo')));
+        $this->assertSame([], $type->loadChoicesForValues(['foo']));
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php
index c91f7c0ff51e..ae8c960cc150 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php
@@ -50,6 +50,6 @@ public function testInvalidChoiceValuesAreDropped()
     {
         $type = new CurrencyType();
 
-        $this->assertSame(array(), $type->loadChoicesForValues(array('foo')));
+        $this->assertSame([], $type->loadChoicesForValues(['foo']));
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateIntervalTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateIntervalTypeTest.php
index 9e7cecebffe2..6e19b9fc3d22 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateIntervalTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateIntervalTypeTest.php
@@ -21,39 +21,39 @@ class DateIntervalTypeTest extends BaseTypeTest
 
     public function testSubmitDateInterval()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('input' => 'dateinterval'));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['input' => 'dateinterval']);
 
-        $form->submit(array(
+        $form->submit([
             'years' => '7',
             'months' => '6',
             'days' => '5',
-        ));
+        ]);
 
         $this->assertDateIntervalEquals(new \DateInterval('P7Y6M5D'), $form->getData());
     }
 
     public function testSubmitString()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('input' => 'string'));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['input' => 'string']);
 
-        $form->submit(array(
+        $form->submit([
             'years' => '7',
             'months' => '6',
             'days' => '5',
-        ));
+        ]);
 
         $this->assertSame('P7Y6M5D', $form->getData());
     }
 
     public function testSubmitArray()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('input' => 'array'));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['input' => 'array']);
 
-        $input = array(
+        $input = [
             'years' => '7',
             'months' => '6',
             'days' => '5',
-        );
+        ];
 
         $form->submit($input);
 
@@ -64,16 +64,16 @@ public function testSubmitWithoutMonths()
     {
         $interval = new \DateInterval('P7Y5D');
 
-        $form = $this->factory->create(static::TESTED_TYPE, $interval, array(
+        $form = $this->factory->create(static::TESTED_TYPE, $interval, [
             'input' => 'dateinterval',
             'with_months' => false,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'years' => '7',
             'months' => '6',
             'days' => '5',
-        ));
+        ]);
 
         $this->assertDateIntervalEquals($interval, $form->getData());
         $this->assertTrue($form->isSynchronized());
@@ -82,21 +82,21 @@ public function testSubmitWithoutMonths()
     public function testSubmitWithTime()
     {
         $interval = new \DateInterval('P7Y6M5DT4H3M2S');
-        $form = $this->factory->create(static::TESTED_TYPE, $interval, array(
+        $form = $this->factory->create(static::TESTED_TYPE, $interval, [
             'input' => 'dateinterval',
             'with_hours' => true,
             'with_minutes' => true,
             'with_seconds' => true,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'years' => '7',
             'months' => '6',
             'days' => '5',
             'hours' => '4',
             'minutes' => '3',
             'seconds' => '2',
-        ));
+        ]);
 
         $this->assertDateIntervalEquals($interval, $form->getData());
         $this->assertTrue($form->isSynchronized());
@@ -104,34 +104,34 @@ public function testSubmitWithTime()
 
     public function testSubmitWithWeeks()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, new \DateInterval('P0Y'), array(
+        $form = $this->factory->create(static::TESTED_TYPE, new \DateInterval('P0Y'), [
             'input' => 'dateinterval',
             'with_years' => false,
             'with_months' => false,
             'with_weeks' => true,
             'with_days' => false,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'weeks' => '30',
-        ));
+        ]);
 
         $this->assertDateIntervalEquals(new \DateInterval('P30W'), $form->getData());
     }
 
     public function testSubmitWithInvert()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'input' => 'dateinterval',
             'with_invert' => true,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'years' => '7',
             'months' => '6',
             'days' => '5',
             'invert' => true,
-        ));
+        ]);
 
         $interval = new \DateInterval('P7Y6M5D');
         $interval->invert = 1;
@@ -141,10 +141,10 @@ public function testSubmitWithInvert()
 
     public function testSubmitStringSingleText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'input' => 'string',
             'widget' => 'single_text',
-        ));
+        ]);
 
         $interval = 'P7Y6M5D';
 
@@ -156,13 +156,13 @@ public function testSubmitStringSingleText()
 
     public function testSubmitStringSingleTextWithSeconds()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'input' => 'string',
             'widget' => 'single_text',
             'with_hours' => true,
             'with_minutes' => true,
             'with_seconds' => true,
-        ));
+        ]);
 
         $interval = 'P7Y6M5DT4H3M2S';
 
@@ -174,19 +174,19 @@ public function testSubmitStringSingleTextWithSeconds()
 
     public function testSubmitArrayInteger()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'integer',
             'with_invert' => true,
-        ));
+        ]);
 
         $years = '7';
 
-        $form->submit(array(
+        $form->submit([
             'years' => '7',
             'months' => '6',
             'days' => '5',
             'invert' => true,
-        ));
+        ]);
 
         $this->assertSame($years, $form['years']->getData());
         $this->assertSame($years, $form['years']->getViewData());
@@ -201,10 +201,10 @@ public function testInitializeWithDateInterval()
 
     public function testPassDefaultPlaceholderToViewIfNotRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('', $view['years']->vars['placeholder']);
@@ -215,10 +215,10 @@ public function testPassDefaultPlaceholderToViewIfNotRequired()
 
     public function testPassNoPlaceholderToViewIfRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => true,
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertNull($view['years']->vars['placeholder']);
@@ -229,10 +229,10 @@ public function testPassNoPlaceholderToViewIfRequired()
 
     public function testPassPlaceholderAsString()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'placeholder' => 'Empty',
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty', $view['years']->vars['placeholder']);
@@ -243,19 +243,19 @@ public function testPassPlaceholderAsString()
 
     public function testPassPlaceholderAsArray()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
-            'placeholder' => array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
+            'placeholder' => [
                 'years' => 'Empty years',
                 'months' => 'Empty months',
                 'days' => 'Empty days',
                 'hours' => 'Empty hours',
                 'minutes' => 'Empty minutes',
                 'seconds' => 'Empty seconds',
-            ),
+            ],
             'with_hours' => true,
             'with_minutes' => true,
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty years', $view['years']->vars['placeholder']);
@@ -268,18 +268,18 @@ public function testPassPlaceholderAsArray()
 
     public function testPassPlaceholderAsPartialArrayAddEmptyIfNotRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
-            'placeholder' => array(
+            'placeholder' => [
                 'years' => 'Empty years',
                 'days' => 'Empty days',
                 'hours' => 'Empty hours',
                 'seconds' => 'Empty seconds',
-            ),
+            ],
             'with_hours' => true,
             'with_minutes' => true,
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty years', $view['years']->vars['placeholder']);
@@ -292,18 +292,18 @@ public function testPassPlaceholderAsPartialArrayAddEmptyIfNotRequired()
 
     public function testPassPlaceholderAsPartialArrayAddNullIfRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => true,
-            'placeholder' => array(
+            'placeholder' => [
                 'years' => 'Empty years',
                 'days' => 'Empty days',
                 'hours' => 'Empty hours',
                 'seconds' => 'Empty seconds',
-            ),
+            ],
             'with_hours' => true,
             'with_minutes' => true,
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty years', $view['years']->vars['placeholder']);
@@ -321,18 +321,18 @@ public function testDateTypeChoiceErrorsBubbleUp()
 
         $form['years']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['years']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['years']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     public function testTranslationsAreDisabledForChoiceWidget()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'choice',
             'with_hours' => true,
             'with_minutes' => true,
             'with_seconds' => true,
-        ));
+        ]);
 
         $this->assertFalse($form->get('years')->getConfig()->getOption('choice_translation_domain'));
         $this->assertFalse($form->get('months')->getConfig()->getOption('choice_translation_domain'));
@@ -344,11 +344,11 @@ public function testTranslationsAreDisabledForChoiceWidget()
 
     public function testInvertDoesNotInheritRequiredOption()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'input' => 'dateinterval',
             'with_invert' => true,
             'required' => true,
-        ));
+        ]);
 
         $this->assertFalse($form->get('invert')->getConfig()->getOption('required'));
     }
@@ -358,13 +358,13 @@ public function testCanChangeTimeFieldsLabels()
         $form = $this->factory->create(
             static::TESTED_TYPE,
             null,
-            array(
+            [
                 'required' => true,
                 'with_invert' => true,
                 'with_hours' => true,
                 'with_minutes' => true,
                 'with_seconds' => true,
-                'labels' => array(
+                'labels' => [
                     'invert' => 'form.trans.invert',
                     'years' => 'form.trans.years',
                     'months' => 'form.trans.months',
@@ -372,8 +372,8 @@ public function testCanChangeTimeFieldsLabels()
                     'hours' => 'form.trans.hours',
                     'minutes' => 'form.trans.minutes',
                     'seconds' => 'form.trans.seconds',
-                ),
-            )
+                ],
+            ]
         );
 
         $view = $form->createView();
@@ -388,15 +388,15 @@ public function testCanChangeTimeFieldsLabels()
 
     public function testInvertDefaultLabel()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('with_invert' => true));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['with_invert' => true]);
 
         $view = $form->createView();
         $this->assertSame('Negative interval', $view['invert']->vars['label']);
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'with_invert' => true,
-            'labels' => array('invert' => null),
-        ));
+            'labels' => ['invert' => null],
+        ]);
 
         $view = $form->createView();
         $this->assertSame('Negative interval', $view['invert']->vars['label']);
@@ -404,22 +404,22 @@ public function testInvertDefaultLabel()
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        parent::testSubmitNull($expected, $norm, array(
+        parent::testSubmitNull($expected, $norm, [
             'years' => '',
             'months' => '',
             'days' => '',
-        ));
+        ]);
     }
 
-    public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expectedData = null)
+    public function testSubmitNullUsesDefaultEmptyData($emptyData = [], $expectedData = null)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         // view transformer writes back empty strings in the view data
-        $this->assertSame(array('years' => '', 'months' => '', 'days' => ''), $form->getViewData());
+        $this->assertSame(['years' => '', 'months' => '', 'days' => ''], $form->getViewData());
         $this->assertSame($expectedData, $form->getNormData());
         $this->assertSame($expectedData, $form->getData());
     }
@@ -429,10 +429,10 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expect
      */
     public function testSubmitNullUsesDateEmptyData($widget, $emptyData, $expectedData)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
@@ -444,11 +444,11 @@ public function provideEmptyData()
     {
         $expectedData = \DateInterval::createFromDateString('6 years and 4 months');
 
-        return array(
-            'Simple field' => array('single_text', 'P6Y4M0D', $expectedData),
-            'Compound text field' => array('text', array('years' => '06', 'months' => '04', 'days' => '00'), $expectedData),
-            'Compound integer field' => array('integer', array('years' => '6', 'months' => '4', 'days' => '0'), $expectedData),
-            'Compound choice field' => array('choice', array('years' => '6', 'months' => '4', 'days' => '0'), $expectedData),
-        );
+        return [
+            'Simple field' => ['single_text', 'P6Y4M0D', $expectedData],
+            'Compound text field' => ['text', ['years' => '06', 'months' => '04', 'days' => '00'], $expectedData],
+            'Compound integer field' => ['integer', ['years' => '6', 'months' => '4', 'days' => '0'], $expectedData],
+            'Compound choice field' => ['choice', ['years' => '6', 'months' => '4', 'days' => '0'], $expectedData],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php
index d219d9e387f1..e3f3b729d3ec 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php
@@ -26,26 +26,26 @@ protected function setUp()
 
     public function testSubmitDateTime()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'date_widget' => 'choice',
-            'years' => array(2010),
+            'years' => [2010],
             'time_widget' => 'choice',
             'input' => 'datetime',
-        ));
+        ]);
 
-        $form->submit(array(
-            'date' => array(
+        $form->submit([
+            'date' => [
                 'day' => '2',
                 'month' => '6',
                 'year' => '2010',
-            ),
-            'time' => array(
+            ],
+            'time' => [
                 'hour' => '3',
                 'minute' => '4',
-            ),
-        ));
+            ],
+        ]);
 
         $dateTime = new \DateTime('2010-06-02 03:04:00 UTC');
 
@@ -54,52 +54,52 @@ public function testSubmitDateTime()
 
     public function testSubmitString()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'string',
             'date_widget' => 'choice',
-            'years' => array(2010),
+            'years' => [2010],
             'time_widget' => 'choice',
-        ));
+        ]);
 
-        $form->submit(array(
-            'date' => array(
+        $form->submit([
+            'date' => [
                 'day' => '2',
                 'month' => '6',
                 'year' => '2010',
-            ),
-            'time' => array(
+            ],
+            'time' => [
                 'hour' => '3',
                 'minute' => '4',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertEquals('2010-06-02 03:04:00', $form->getData());
     }
 
     public function testSubmitTimestamp()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'timestamp',
             'date_widget' => 'choice',
-            'years' => array(2010),
+            'years' => [2010],
             'time_widget' => 'choice',
-        ));
+        ]);
 
-        $form->submit(array(
-            'date' => array(
+        $form->submit([
+            'date' => [
                 'day' => '2',
                 'month' => '6',
                 'year' => '2010',
-            ),
-            'time' => array(
+            ],
+            'time' => [
                 'hour' => '3',
                 'minute' => '4',
-            ),
-        ));
+            ],
+        ]);
 
         $dateTime = new \DateTime('2010-06-02 03:04:00 UTC');
 
@@ -108,28 +108,28 @@ public function testSubmitTimestamp()
 
     public function testSubmitWithoutMinutes()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'date_widget' => 'choice',
-            'years' => array(2010),
+            'years' => [2010],
             'time_widget' => 'choice',
             'input' => 'datetime',
             'with_minutes' => false,
-        ));
+        ]);
 
         $form->setData(new \DateTime());
 
-        $input = array(
-            'date' => array(
+        $input = [
+            'date' => [
                 'day' => '2',
                 'month' => '6',
                 'year' => '2010',
-            ),
-            'time' => array(
+            ],
+            'time' => [
                 'hour' => '3',
-            ),
-        );
+            ],
+        ];
 
         $form->submit($input);
 
@@ -138,30 +138,30 @@ public function testSubmitWithoutMinutes()
 
     public function testSubmitWithSeconds()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'date_widget' => 'choice',
-            'years' => array(2010),
+            'years' => [2010],
             'time_widget' => 'choice',
             'input' => 'datetime',
             'with_seconds' => true,
-        ));
+        ]);
 
         $form->setData(new \DateTime());
 
-        $input = array(
-            'date' => array(
+        $input = [
+            'date' => [
                 'day' => '2',
                 'month' => '6',
                 'year' => '2010',
-            ),
-            'time' => array(
+            ],
+            'time' => [
                 'hour' => '3',
                 'minute' => '4',
                 'second' => '5',
-            ),
-        );
+            ],
+        ];
 
         $form->submit($input);
 
@@ -170,30 +170,30 @@ public function testSubmitWithSeconds()
 
     public function testSubmitDifferentTimezones()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'America/New_York',
             'view_timezone' => 'Pacific/Tahiti',
             'date_widget' => 'choice',
-            'years' => array(2010),
+            'years' => [2010],
             'time_widget' => 'choice',
             'input' => 'string',
             'with_seconds' => true,
-        ));
+        ]);
 
         $dateTime = new \DateTime('2010-06-02 03:04:05 Pacific/Tahiti');
 
-        $form->submit(array(
-            'date' => array(
+        $form->submit([
+            'date' => [
                 'day' => (int) $dateTime->format('d'),
                 'month' => (int) $dateTime->format('m'),
                 'year' => (int) $dateTime->format('Y'),
-            ),
-            'time' => array(
+            ],
+            'time' => [
                 'hour' => (int) $dateTime->format('H'),
                 'minute' => (int) $dateTime->format('i'),
                 'second' => (int) $dateTime->format('s'),
-            ),
-        ));
+            ],
+        ]);
 
         $dateTime->setTimezone(new \DateTimeZone('America/New_York'));
 
@@ -202,12 +202,12 @@ public function testSubmitDifferentTimezones()
 
     public function testSubmitDifferentTimezonesDateTime()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'America/New_York',
             'view_timezone' => 'Pacific/Tahiti',
             'widget' => 'single_text',
             'input' => 'datetime',
-        ));
+        ]);
 
         $outputTime = new \DateTime('2010-06-02 03:04:00 Pacific/Tahiti');
 
@@ -221,12 +221,12 @@ public function testSubmitDifferentTimezonesDateTime()
 
     public function testSubmitStringSingleText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'string',
             'widget' => 'single_text',
-        ));
+        ]);
 
         $form->submit('2010-06-02T03:04:00');
 
@@ -236,13 +236,13 @@ public function testSubmitStringSingleText()
 
     public function testSubmitStringSingleTextWithSeconds()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'string',
             'widget' => 'single_text',
             'with_seconds' => true,
-        ));
+        ]);
 
         $form->submit('2010-06-02T03:04:05');
 
@@ -252,19 +252,19 @@ public function testSubmitStringSingleTextWithSeconds()
 
     public function testSubmitDifferentPattern()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'date_format' => 'MM*yyyy*dd',
             'date_widget' => 'single_text',
             'time_widget' => 'single_text',
             'input' => 'datetime',
-        ));
+        ]);
 
         $dateTime = new \DateTime('2010-06-02 03:04');
 
-        $form->submit(array(
+        $form->submit([
             'date' => '06*2010*02',
             'time' => '03:04',
-        ));
+        ]);
 
         $this->assertEquals($dateTime, $form->getData());
     }
@@ -278,9 +278,9 @@ public function testInitializeWithDateTime()
 
     public function testSingleTextWidgetShouldUseTheRightInputType()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ))
+        ])
             ->createView();
 
         $this->assertEquals('datetime-local', $view->vars['type']);
@@ -288,10 +288,10 @@ public function testSingleTextWidgetShouldUseTheRightInputType()
 
     public function testPassDefaultPlaceholderToViewIfNotRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('', $view['date']['year']->vars['placeholder']);
@@ -304,10 +304,10 @@ public function testPassDefaultPlaceholderToViewIfNotRequired()
 
     public function testPassNoPlaceholderToViewIfRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => true,
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertNull($view['date']['year']->vars['placeholder']);
@@ -320,10 +320,10 @@ public function testPassNoPlaceholderToViewIfRequired()
 
     public function testPassPlaceholderAsString()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'placeholder' => 'Empty',
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty', $view['date']['year']->vars['placeholder']);
@@ -336,17 +336,17 @@ public function testPassPlaceholderAsString()
 
     public function testPassPlaceholderAsArray()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
-            'placeholder' => array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
+            'placeholder' => [
                 'year' => 'Empty year',
                 'month' => 'Empty month',
                 'day' => 'Empty day',
                 'hour' => 'Empty hour',
                 'minute' => 'Empty minute',
                 'second' => 'Empty second',
-            ),
+            ],
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty year', $view['date']['year']->vars['placeholder']);
@@ -359,16 +359,16 @@ public function testPassPlaceholderAsArray()
 
     public function testPassPlaceholderAsPartialArrayAddEmptyIfNotRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
-            'placeholder' => array(
+            'placeholder' => [
                 'year' => 'Empty year',
                 'day' => 'Empty day',
                 'hour' => 'Empty hour',
                 'second' => 'Empty second',
-            ),
+            ],
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty year', $view['date']['year']->vars['placeholder']);
@@ -381,16 +381,16 @@ public function testPassPlaceholderAsPartialArrayAddEmptyIfNotRequired()
 
     public function testPassPlaceholderAsPartialArrayAddNullIfRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => true,
-            'placeholder' => array(
+            'placeholder' => [
                 'year' => 'Empty year',
                 'day' => 'Empty day',
                 'hour' => 'Empty hour',
                 'second' => 'Empty second',
-            ),
+            ],
             'with_seconds' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty year', $view['date']['year']->vars['placeholder']);
@@ -403,9 +403,9 @@ public function testPassPlaceholderAsPartialArrayAddNullIfRequired()
 
     public function testPassHtml5TypeIfSingleTextAndHtml5Format()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('datetime-local', $view->vars['type']);
@@ -413,10 +413,10 @@ public function testPassHtml5TypeIfSingleTextAndHtml5Format()
 
     public function testDontPassHtml5TypeIfHtml5NotAllowed()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
             'html5' => false,
-        ))
+        ])
             ->createView();
 
         $this->assertArrayNotHasKey('type', $view->vars);
@@ -424,10 +424,10 @@ public function testDontPassHtml5TypeIfHtml5NotAllowed()
 
     public function testDontPassHtml5TypeIfNotHtml5Format()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
             'format' => 'yyyy-MM-dd HH:mm',
-        ))
+        ])
             ->createView();
 
         $this->assertArrayNotHasKey('type', $view->vars);
@@ -435,9 +435,9 @@ public function testDontPassHtml5TypeIfNotHtml5Format()
 
     public function testDontPassHtml5TypeIfNotSingleText()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'text',
-        ))
+        ])
             ->createView();
 
         $this->assertArrayNotHasKey('type', $view->vars);
@@ -450,21 +450,21 @@ public function testDateTypeChoiceErrorsBubbleUp()
 
         $form['date']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['date']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['date']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     public function testDateTypeSingleTextErrorsBubbleUp()
     {
         $error = new FormError('Invalid!');
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'date_widget' => 'single_text',
-        ));
+        ]);
 
         $form['date']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['date']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['date']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     public function testTimeTypeChoiceErrorsBubbleUp()
@@ -474,28 +474,28 @@ public function testTimeTypeChoiceErrorsBubbleUp()
 
         $form['time']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['time']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['time']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     public function testTimeTypeSingleTextErrorsBubbleUp()
     {
         $error = new FormError('Invalid!');
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'time_widget' => 'single_text',
-        ));
+        ]);
 
         $form['time']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['time']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['time']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     public function testPassDefaultChoiceTranslationDomain()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
 
@@ -509,10 +509,10 @@ public function testPassDefaultChoiceTranslationDomain()
 
     public function testPassChoiceTranslationDomainAsString()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'choice_translation_domain' => 'messages',
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('messages', $view['date']['year']->vars['choice_translation_domain']);
@@ -525,15 +525,15 @@ public function testPassChoiceTranslationDomainAsString()
 
     public function testPassChoiceTranslationDomainAsArray()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'choice_translation_domain' => array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'choice_translation_domain' => [
                 'year' => 'foo',
                 'month' => 'test',
                 'hour' => 'foo',
                 'second' => 'test',
-            ),
+            ],
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('foo', $view['date']['year']->vars['choice_translation_domain']);
@@ -546,34 +546,34 @@ public function testPassChoiceTranslationDomainAsArray()
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        parent::testSubmitNull($expected, $norm, array(
+        parent::testSubmitNull($expected, $norm, [
             // View data is an array of choice values array
-            'date' => array('year' => '', 'month' => '', 'day' => ''),
-            'time' => array('hour' => '', 'minute' => ''),
-        ));
+            'date' => ['year' => '', 'month' => '', 'day' => ''],
+            'time' => ['hour' => '', 'minute' => ''],
+        ]);
     }
 
     public function testSubmitNullWithText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'text',
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertNull($form->getData());
         $this->assertNull($form->getNormData());
-        $this->assertSame(array(
+        $this->assertSame([
             // View data is an array of choice values array
-            'date' => array('year' => '', 'month' => '', 'day' => ''),
-            'time' => array('hour' => '', 'minute' => ''),
-        ), $form->getViewData());
+            'date' => ['year' => '', 'month' => '', 'day' => ''],
+            'time' => ['hour' => '', 'minute' => ''],
+        ], $form->getViewData());
     }
 
     public function testSubmitNullWithSingleText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertNull($form->getData());
@@ -581,16 +581,16 @@ public function testSubmitNullWithSingleText()
         $this->assertSame('', $form->getViewData());
     }
 
-    public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expectedData = null)
+    public function testSubmitNullUsesDefaultEmptyData($emptyData = [], $expectedData = null)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         // view transformer writes back empty strings in the view data
         $this->assertSame(
-            array('date' => array('year' => '', 'month' => '', 'day' => ''), 'time' => array('hour' => '', 'minute' => '')),
+            ['date' => ['year' => '', 'month' => '', 'day' => ''], 'time' => ['hour' => '', 'minute' => '']],
             $form->getViewData()
         );
         $this->assertSame($expectedData, $form->getNormData());
@@ -602,10 +602,10 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expect
      */
     public function testSubmitNullUsesDateEmptyData($widget, $emptyData, $expectedData)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
@@ -617,10 +617,10 @@ public function provideEmptyData()
     {
         $expectedData = \DateTime::createFromFormat('Y-m-d H:i', '2018-11-11 21:23');
 
-        return array(
-            'Simple field' => array('single_text', '2018-11-11T21:23:00', $expectedData),
-            'Compound text field' => array('text', array('date' => array('year' => '2018', 'month' => '11', 'day' => '11'), 'time' => array('hour' => '21', 'minute' => '23')), $expectedData),
-            'Compound choice field' => array('choice', array('date' => array('year' => '2018', 'month' => '11', 'day' => '11'), 'time' => array('hour' => '21', 'minute' => '23')), $expectedData),
-        );
+        return [
+            'Simple field' => ['single_text', '2018-11-11T21:23:00', $expectedData],
+            'Compound text field' => ['text', ['date' => ['year' => '2018', 'month' => '11', 'day' => '11'], 'time' => ['hour' => '21', 'minute' => '23']], $expectedData],
+            'Compound choice field' => ['choice', ['date' => ['year' => '2018', 'month' => '11', 'day' => '11'], 'time' => ['hour' => '21', 'minute' => '23']], $expectedData],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
index 169d18b61bde..247a5d4b3786 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
@@ -38,9 +38,9 @@ protected function tearDown()
      */
     public function testInvalidWidgetOption()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'fake_widget',
-        ));
+        ]);
     }
 
     /**
@@ -48,19 +48,19 @@ public function testInvalidWidgetOption()
      */
     public function testInvalidInputOption()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'input' => 'fake_input',
-        ));
+        ]);
     }
 
     public function testSubmitFromSingleTextDateTimeWithDefaultFormat()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'single_text',
             'input' => 'datetime',
-        ));
+        ]);
 
         $form->submit('2010-06-02');
 
@@ -70,13 +70,13 @@ public function testSubmitFromSingleTextDateTimeWithDefaultFormat()
 
     public function testSubmitFromSingleTextDateTimeWithCustomFormat()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'single_text',
             'input' => 'datetime',
             'format' => 'yyyy',
-        ));
+        ]);
 
         $form->submit('2010');
 
@@ -91,13 +91,13 @@ public function testSubmitFromSingleTextDateTime()
 
         \Locale::setDefault('de_DE');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => \IntlDateFormatter::MEDIUM,
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'single_text',
             'input' => 'datetime',
-        ));
+        ]);
 
         $form->submit('2.6.2010');
 
@@ -112,13 +112,13 @@ public function testSubmitFromSingleTextString()
 
         \Locale::setDefault('de_DE');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => \IntlDateFormatter::MEDIUM,
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'single_text',
             'input' => 'string',
-        ));
+        ]);
 
         $form->submit('2.6.2010');
 
@@ -133,13 +133,13 @@ public function testSubmitFromSingleTextTimestamp()
 
         \Locale::setDefault('de_DE');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => \IntlDateFormatter::MEDIUM,
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'single_text',
             'input' => 'timestamp',
-        ));
+        ]);
 
         $form->submit('2.6.2010');
 
@@ -156,21 +156,21 @@ public function testSubmitFromSingleTextRaw()
 
         \Locale::setDefault('de_DE');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => \IntlDateFormatter::MEDIUM,
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'single_text',
             'input' => 'array',
-        ));
+        ]);
 
         $form->submit('2.6.2010');
 
-        $output = array(
+        $output = [
             'day' => '2',
             'month' => '6',
             'year' => '2010',
-        );
+        ];
 
         $this->assertEquals($output, $form->getData());
         $this->assertEquals('02.06.2010', $form->getViewData());
@@ -178,17 +178,17 @@ public function testSubmitFromSingleTextRaw()
 
     public function testSubmitFromText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'text',
-        ));
+        ]);
 
-        $text = array(
+        $text = [
             'day' => '2',
             'month' => '6',
             'year' => '2010',
-        );
+        ];
 
         $form->submit($text);
 
@@ -200,18 +200,18 @@ public function testSubmitFromText()
 
     public function testSubmitFromChoice()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'choice',
-            'years' => array(2010),
-        ));
+            'years' => [2010],
+        ]);
 
-        $text = array(
+        $text = [
             'day' => '2',
             'month' => '6',
             'year' => '2010',
-        );
+        ];
 
         $form->submit($text);
 
@@ -223,18 +223,18 @@ public function testSubmitFromChoice()
 
     public function testSubmitFromChoiceEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'choice',
             'required' => false,
-        ));
+        ]);
 
-        $text = array(
+        $text = [
             'day' => '',
             'month' => '',
             'year' => '',
-        );
+        ];
 
         $form->submit($text);
 
@@ -244,13 +244,13 @@ public function testSubmitFromChoiceEmpty()
 
     public function testSubmitFromInputDateTimeDifferentPattern()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'format' => 'MM*yyyy*dd',
             'widget' => 'single_text',
             'input' => 'datetime',
-        ));
+        ]);
 
         $form->submit('06*2010*02');
 
@@ -260,13 +260,13 @@ public function testSubmitFromInputDateTimeDifferentPattern()
 
     public function testSubmitFromInputStringDifferentPattern()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'format' => 'MM*yyyy*dd',
             'widget' => 'single_text',
             'input' => 'string',
-        ));
+        ]);
 
         $form->submit('06*2010*02');
 
@@ -276,13 +276,13 @@ public function testSubmitFromInputStringDifferentPattern()
 
     public function testSubmitFromInputTimestampDifferentPattern()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'format' => 'MM*yyyy*dd',
             'widget' => 'single_text',
             'input' => 'timestamp',
-        ));
+        ]);
 
         $form->submit('06*2010*02');
 
@@ -294,21 +294,21 @@ public function testSubmitFromInputTimestampDifferentPattern()
 
     public function testSubmitFromInputRawDifferentPattern()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'format' => 'MM*yyyy*dd',
             'widget' => 'single_text',
             'input' => 'array',
-        ));
+        ]);
 
         $form->submit('06*2010*02');
 
-        $output = array(
+        $output = [
             'day' => '2',
             'month' => '6',
             'year' => '2010',
-        );
+        ];
 
         $this->assertEquals($output, $form->getData());
         $this->assertEquals('06*2010*02', $form->getViewData());
@@ -319,9 +319,9 @@ public function testSubmitFromInputRawDifferentPattern()
      */
     public function testDatePatternWithFormatOption($format, $pattern)
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => $format,
-        ))
+        ])
             ->createView();
 
         $this->assertEquals($pattern, $view->vars['date_pattern']);
@@ -329,11 +329,11 @@ public function testDatePatternWithFormatOption($format, $pattern)
 
     public function provideDateFormats()
     {
-        return array(
-            array('dMy', '{{ day }}{{ month }}{{ year }}'),
-            array('d-M-yyyy', '{{ day }}-{{ month }}-{{ year }}'),
-            array('M d y', '{{ month }} {{ day }} {{ year }}'),
-        );
+        return [
+            ['dMy', '{{ day }}{{ month }}{{ year }}'],
+            ['d-M-yyyy', '{{ day }}-{{ month }}-{{ year }}'],
+            ['M d y', '{{ month }} {{ day }} {{ year }}'],
+        ];
     }
 
     /**
@@ -344,11 +344,11 @@ public function provideDateFormats()
      */
     public function testThrowExceptionIfFormatIsNoPattern()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'format' => '0',
             'widget' => 'single_text',
             'input' => 'string',
-        ));
+        ]);
     }
 
     /**
@@ -357,10 +357,10 @@ public function testThrowExceptionIfFormatIsNoPattern()
      */
     public function testThrowExceptionIfFormatDoesNotContainYearMonthAndDay()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
-            'months' => array(6, 7),
+        $this->factory->create(static::TESTED_TYPE, null, [
+            'months' => [6, 7],
             'format' => 'yy',
-        ));
+        ]);
     }
 
     /**
@@ -369,10 +369,10 @@ public function testThrowExceptionIfFormatDoesNotContainYearMonthAndDay()
      */
     public function testThrowExceptionIfFormatMissesYearMonthAndDayWithSingleTextWidget()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
             'format' => 'wrong',
-        ));
+        ]);
     }
 
     /**
@@ -380,9 +380,9 @@ public function testThrowExceptionIfFormatMissesYearMonthAndDayWithSingleTextWid
      */
     public function testThrowExceptionIfFormatIsNoConstant()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'format' => 105,
-        ));
+        ]);
     }
 
     /**
@@ -390,9 +390,9 @@ public function testThrowExceptionIfFormatIsNoConstant()
      */
     public function testThrowExceptionIfFormatIsInvalid()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
-            'format' => array(),
-        ));
+        $this->factory->create(static::TESTED_TYPE, null, [
+            'format' => [],
+        ]);
     }
 
     /**
@@ -400,9 +400,9 @@ public function testThrowExceptionIfFormatIsInvalid()
      */
     public function testThrowExceptionIfYearsIsInvalid()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'years' => 'bad value',
-        ));
+        ]);
     }
 
     /**
@@ -410,9 +410,9 @@ public function testThrowExceptionIfYearsIsInvalid()
      */
     public function testThrowExceptionIfMonthsIsInvalid()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'months' => 'bad value',
-        ));
+        ]);
     }
 
     /**
@@ -420,9 +420,9 @@ public function testThrowExceptionIfMonthsIsInvalid()
      */
     public function testThrowExceptionIfDaysIsInvalid()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'days' => 'bad value',
-        ));
+        ]);
     }
 
     public function testSetDataWithNegativeTimezoneOffsetStringInput()
@@ -432,13 +432,13 @@ public function testSetDataWithNegativeTimezoneOffsetStringInput()
 
         \Locale::setDefault('de_DE');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => \IntlDateFormatter::MEDIUM,
             'model_timezone' => 'UTC',
             'view_timezone' => 'America/New_York',
             'input' => 'string',
             'widget' => 'single_text',
-        ));
+        ]);
 
         $form->setData('2010-06-02');
 
@@ -454,13 +454,13 @@ public function testSetDataWithNegativeTimezoneOffsetDateTimeInput()
 
         \Locale::setDefault('de_DE');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => \IntlDateFormatter::MEDIUM,
             'model_timezone' => 'UTC',
             'view_timezone' => 'America/New_York',
             'input' => 'datetime',
             'widget' => 'single_text',
-        ));
+        ]);
 
         $dateTime = new \DateTime('2010-06-02 UTC');
 
@@ -474,31 +474,31 @@ public function testSetDataWithNegativeTimezoneOffsetDateTimeInput()
 
     public function testYearsOption()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'years' => array(2010, 2011),
-        ));
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'years' => [2010, 2011],
+        ]);
 
         $view = $form->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView('2010', '2010', '2010'),
             new ChoiceView('2011', '2011', '2011'),
-        ), $view['year']->vars['choices']);
+        ], $view['year']->vars['choices']);
     }
 
     public function testMonthsOption()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'months' => array(6, 7),
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'months' => [6, 7],
             'format' => \IntlDateFormatter::SHORT,
-        ));
+        ]);
 
         $view = $form->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView(6, '6', '06'),
             new ChoiceView(7, '7', '07'),
-        ), $view['month']->vars['choices']);
+        ], $view['month']->vars['choices']);
     }
 
     public function testMonthsOptionShortFormat()
@@ -508,17 +508,17 @@ public function testMonthsOptionShortFormat()
 
         \Locale::setDefault('de_AT');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'months' => array(1, 4),
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'months' => [1, 4],
             'format' => 'dd.MMM.yy',
-        ));
+        ]);
 
         $view = $form->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView(1, '1', 'Jän.'),
             new ChoiceView(4, '4', 'Apr.'),
-        ), $view['month']->vars['choices']);
+        ], $view['month']->vars['choices']);
     }
 
     public function testMonthsOptionLongFormat()
@@ -528,16 +528,16 @@ public function testMonthsOptionLongFormat()
 
         \Locale::setDefault('de_AT');
 
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
-            'months' => array(1, 4),
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
+            'months' => [1, 4],
             'format' => 'dd.MMMM.yy',
-        ))
+        ])
             ->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView(1, '1', 'Jänner'),
             new ChoiceView(4, '4', 'April'),
-        ), $view['month']->vars['choices']);
+        ], $view['month']->vars['choices']);
     }
 
     public function testMonthsOptionLongFormatWithDifferentTimezone()
@@ -547,78 +547,78 @@ public function testMonthsOptionLongFormatWithDifferentTimezone()
 
         \Locale::setDefault('de_AT');
 
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
-            'months' => array(1, 4),
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
+            'months' => [1, 4],
             'format' => 'dd.MMMM.yy',
-        ))
+        ])
             ->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView(1, '1', 'Jänner'),
             new ChoiceView(4, '4', 'April'),
-        ), $view['month']->vars['choices']);
+        ], $view['month']->vars['choices']);
     }
 
     public function testIsDayWithinRangeReturnsTrueIfWithin()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
-            'days' => array(6, 7),
-        ))
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
+            'days' => [6, 7],
+        ])
             ->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView(6, '6', '06'),
             new ChoiceView(7, '7', '07'),
-        ), $view['day']->vars['choices']);
+        ], $view['day']->vars['choices']);
     }
 
     public function testIsSynchronizedReturnsTrueIfChoiceAndCompletelyEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'choice',
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'day' => '',
             'month' => '',
             'year' => '',
-        ));
+        ]);
 
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testIsSynchronizedReturnsTrueIfChoiceAndCompletelyFilled()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, new \DateTime(), array(
+        $form = $this->factory->create(static::TESTED_TYPE, new \DateTime(), [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'choice',
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'day' => '1',
             'month' => '6',
             'year' => '2010',
-        ));
+        ]);
 
         $this->assertTrue($form->isSynchronized());
     }
 
     public function testIsSynchronizedReturnsFalseIfChoiceAndDayEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'choice',
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'day' => '',
             'month' => '6',
             'year' => '2010',
-        ));
+        ]);
 
         $this->assertFalse($form->isSynchronized());
     }
@@ -643,9 +643,9 @@ public function testPassDatePatternToViewDifferentFormat()
 
         \Locale::setDefault('de_AT');
 
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => \IntlDateFormatter::LONG,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('{{ day }}{{ month }}{{ year }}', $view->vars['date_pattern']);
@@ -653,9 +653,9 @@ public function testPassDatePatternToViewDifferentFormat()
 
     public function testPassDatePatternToViewDifferentPattern()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => 'MMyyyydd',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('{{ month }}{{ year }}{{ day }}', $view->vars['date_pattern']);
@@ -663,9 +663,9 @@ public function testPassDatePatternToViewDifferentPattern()
 
     public function testPassDatePatternToViewDifferentPatternWithSeparators()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => 'MM*yyyy*dd',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('{{ month }}*{{ year }}*{{ day }}', $view->vars['date_pattern']);
@@ -673,9 +673,9 @@ public function testPassDatePatternToViewDifferentPatternWithSeparators()
 
     public function testDontPassDatePatternIfText()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ))
+        ])
             ->createView();
 
         $this->assertArrayNotHasKey('date_pattern', $view->vars);
@@ -688,10 +688,10 @@ public function testDatePatternFormatWithQuotedStrings()
 
         \Locale::setDefault('es_ES');
 
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             // EEEE, d 'de' MMMM 'de' y
             'format' => \IntlDateFormatter::FULL,
-        ))
+        ])
             ->createView();
 
         $this->assertEquals('{{ day }}{{ month }}{{
10000
 year }}', $view->vars['date_pattern']);
@@ -699,9 +699,9 @@ public function testDatePatternFormatWithQuotedStrings()
 
     public function testPassWidgetToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('single_text', $view->vars['widget']);
@@ -716,9 +716,9 @@ public function testInitializeWithDateTime()
 
     public function testSingleTextWidgetShouldUseTheRightInputType()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ))
+        ])
             ->createView();
 
         $this->assertEquals('date', $view->vars['type']);
@@ -726,9 +726,9 @@ public function testSingleTextWidgetShouldUseTheRightInputType()
 
     public function testPassDefaultPlaceholderToViewIfNotRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
-        ))
+        ])
             ->createView();
 
         $this->assertSame('', $view['year']->vars['placeholder']);
@@ -738,9 +738,9 @@ public function testPassDefaultPlaceholderToViewIfNotRequired()
 
     public function testPassNoPlaceholderToViewIfRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => true,
-        ))
+        ])
             ->createView();
 
         $this->assertNull($view['year']->vars['placeholder']);
@@ -750,9 +750,9 @@ public function testPassNoPlaceholderToViewIfRequired()
 
     public function testPassPlaceholderAsString()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'placeholder' => 'Empty',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('Empty', $view['year']->vars['placeholder']);
@@ -762,13 +762,13 @@ public function testPassPlaceholderAsString()
 
     public function testPassPlaceholderAsArray()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
-            'placeholder' => array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
+            'placeholder' => [
                 'year' => 'Empty year',
                 'month' => 'Empty month',
                 'day' => 'Empty day',
-            ),
-        ))
+            ],
+        ])
             ->createView();
 
         $this->assertSame('Empty year', $view['year']->vars['placeholder']);
@@ -778,13 +778,13 @@ public function testPassPlaceholderAsArray()
 
     public function testPassPlaceholderAsPartialArrayAddEmptyIfNotRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
-            'placeholder' => array(
+            'placeholder' => [
                 'year' => 'Empty year',
                 'day' => 'Empty day',
-            ),
-        ))
+            ],
+        ])
             ->createView();
 
         $this->assertSame('Empty year', $view['year']->vars['placeholder']);
@@ -794,13 +794,13 @@ public function testPassPlaceholderAsPartialArrayAddEmptyIfNotRequired()
 
     public function testPassPlaceholderAsPartialArrayAddNullIfRequired()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => true,
-            'placeholder' => array(
+            'placeholder' => [
                 'year' => 'Empty year',
                 'day' => 'Empty day',
-            ),
-        ))
+            ],
+        ])
             ->createView();
 
         $this->assertSame('Empty year', $view['year']->vars['placeholder']);
@@ -810,9 +810,9 @@ public function testPassPlaceholderAsPartialArrayAddNullIfRequired()
 
     public function testPassHtml5TypeIfSingleTextAndHtml5Format()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ))
+        ])
             ->createView();
 
         $this->assertSame('date', $view->vars['type']);
@@ -820,10 +820,10 @@ public function testPassHtml5TypeIfSingleTextAndHtml5Format()
 
     public function testDontPassHtml5TypeIfHtml5NotAllowed()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
             'html5' => false,
-        ))
+        ])
             ->createView();
 
         $this->assertArrayNotHasKey('type', $view->vars);
@@ -831,10 +831,10 @@ public function testDontPassHtml5TypeIfHtml5NotAllowed()
 
     public function testDontPassHtml5TypeIfNotHtml5Format()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
             'format' => \IntlDateFormatter::MEDIUM,
-        ))
+        ])
             ->createView();
 
         $this->assertArrayNotHasKey('type', $view->vars);
@@ -842,9 +842,9 @@ public function testDontPassHtml5TypeIfNotHtml5Format()
 
     public function testDontPassHtml5TypeIfNotSingleText()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'text',
-        ))
+        ])
             ->createView();
 
         $this->assertArrayNotHasKey('type', $view->vars);
@@ -852,10 +852,10 @@ public function testDontPassHtml5TypeIfNotSingleText()
 
     public function provideCompoundWidgets()
     {
-        return array(
-            array('text'),
-            array('choice'),
-        );
+        return [
+            ['text'],
+            ['choice'],
+        ];
     }
 
     /**
@@ -864,13 +864,13 @@ public function provideCompoundWidgets()
     public function testYearErrorsBubbleUp($widget)
     {
         $error = new FormError('Invalid!');
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
-        ));
+        ]);
         $form['year']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['year']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['year']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     /**
@@ -879,13 +879,13 @@ public function testYearErrorsBubbleUp($widget)
     public function testMonthErrorsBubbleUp($widget)
     {
         $error = new FormError('Invalid!');
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
-        ));
+        ]);
         $form['month']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['month']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['month']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     /**
@@ -894,13 +894,13 @@ public function testMonthErrorsBubbleUp($widget)
     public function testDayErrorsBubbleUp($widget)
     {
         $error = new FormError('Invalid!');
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
-        ));
+        ]);
         $form['day']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['day']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['day']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     public function testYearsFor32BitsMachines()
@@ -909,12 +909,12 @@ public function testYearsFor32BitsMachines()
             $this->markTestSkipped('PHP 32 bit is required.');
         }
 
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
             'years' => range(1900, 2040),
-        ))
+        ])
             ->createView();
 
-        $listChoices = array();
+        $listChoices = [];
         foreach (range(1902, 2037) as $y) {
             $listChoices[] = new ChoiceView($y, $y, $y);
         }
@@ -934,9 +934,9 @@ public function testPassDefaultChoiceTranslationDomain()
 
     public function testPassChoiceTranslationDomainAsString()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'choice_translation_domain' => 'messages',
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('messages', $view['year']->vars['choice_translation_domain']);
@@ -946,12 +946,12 @@ public function testPassChoiceTranslationDomainAsString()
 
     public function testPassChoiceTranslationDomainAsArray()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'choice_translation_domain' => array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'choice_translation_domain' => [
                 'year' => 'foo',
                 'day' => 'test',
-            ),
-        ));
+            ],
+        ]);
 
         $view = $form->createView();
         $this->assertSame('foo', $view['year']->vars['choice_translation_domain']);
@@ -961,14 +961,14 @@ public function testPassChoiceTranslationDomainAsArray()
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        parent::testSubmitNull($expected, $norm, array('year' => '', 'month' => '', 'day' => ''));
+        parent::testSubmitNull($expected, $norm, ['year' => '', 'month' => '', 'day' => '']);
     }
 
     public function testSubmitNullWithSingleText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertNull($form->getData());
@@ -976,15 +976,15 @@ public function testSubmitNullWithSingleText()
         $this->assertSame('', $form->getViewData());
     }
 
-    public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expectedData = null)
+    public function testSubmitNullUsesDefaultEmptyData($emptyData = [], $expectedData = null)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         // view transformer writes back empty strings in the view data
-        $this->assertSame(array('year' => '', 'month' => '', 'day' => ''), $form->getViewData());
+        $this->assertSame(['year' => '', 'month' => '', 'day' => ''], $form->getViewData());
         $this->assertSame($expectedData, $form->getNormData());
         $this->assertSame($expectedData, $form->getData());
     }
@@ -994,10 +994,10 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expect
      */
     public function testSubmitNullUsesDateEmptyData($widget, $emptyData, $expectedData)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
@@ -1009,10 +1009,10 @@ public function provideEmptyData()
     {
         $expectedData = \DateTime::createFromFormat('Y-m-d H:i:s', '2018-11-11 00:00:00');
 
-        return array(
-            'Simple field' => array('single_text', '2018-11-11', $expectedData),
-            'Compound text fields' => array('text', array('year' => '2018', 'month' => '11', 'day' => '11'), $expectedData),
-            'Compound choice fields' => array('choice', array('year' => '2018', 'month' => '11', 'day' => '11'), $expectedData),
-        );
+        return [
+            'Simple field' => ['single_text', '2018-11-11', $expectedData],
+            'Compound text fields' => ['text', ['year' => '2018', 'month' => '11', 'day' => '11'], $expectedData],
+            'Compound choice fields' => ['choice', ['year' => '2018', 'month' => '11', 'day' => '11'], $expectedData],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/ExtendedChoiceTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/ExtendedChoiceTypeTest.php
index 959ae488a1ee..aa76b1335951 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/ExtendedChoiceTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/ExtendedChoiceTypeTest.php
@@ -48,7 +48,7 @@ public function testChoicesAreOverridden($type)
             ->getFormFactory()
         ;
 
-        $choices = $factory->create($type, null, array('choice_loader' => null))->createView()->vars['choices'];
+        $choices = $factory->create($type, null, ['choice_loader' => null])->createView()->vars['choices'];
 
         $this->assertCount(2, $choices);
         $this->assertSame('A', $choices[0]->label);
@@ -78,10 +78,10 @@ public function testChoiceLoaderIsOverridden($type)
 
     public function provideTestedTypes()
     {
-        yield array(CountryTypeTest::TESTED_TYPE);
-        yield array(CurrencyTypeTest::TESTED_TYPE);
-        yield array(LanguageTypeTest::TESTED_TYPE);
-        yield array(LocaleTypeTest::TESTED_TYPE);
-        yield array(TimezoneTypeTest::TESTED_TYPE);
+        yield [CountryTypeTest::TESTED_TYPE];
+        yield [CurrencyTypeTest::TESTED_TYPE];
+        yield [LanguageTypeTest::TESTED_TYPE];
+        yield [LocaleTypeTest::TESTED_TYPE];
+        yield [TimezoneTypeTest::TESTED_TYPE];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/FileTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/FileTypeTest.php
index 5ba1dc5a5101..c1e0571ec786 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/FileTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/FileTypeTest.php
@@ -25,7 +25,7 @@ public function testSetData()
     {
         $form = $this->factory->createBuilder(static::TESTED_TYPE)->getForm();
         $data = $this->getMockBuilder('Symfony\Component\HttpFoundation\File\File')
-            ->setConstructorArgs(array(__DIR__.'/../../../Fixtures/foo', 'foo'))
+            ->setConstructorArgs([__DIR__.'/../../../Fixtures/foo', 'foo'])
             ->getMock();
 
         $form->setData($data);
@@ -52,14 +52,14 @@ public function testSubmit(RequestHandlerInterface $requestHandler)
      */
     public function testSetDataMultiple(RequestHandlerInterface $requestHandler)
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'multiple' => true,
-        ))->setRequestHandler($requestHandler)->getForm();
+        ])->setRequestHandler($requestHandler)->getForm();
 
-        $data = array(
+        $data = [
             $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo', 'foo.jpg'),
             $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo2', 'foo2.jpg'),
-        );
+        ];
 
         $form->setData($data);
         $this->assertSame($data, $form->getData());
@@ -70,14 +70,14 @@ public function testSetDataMultiple(RequestHandlerInterface $requestHandler)
      */
     public function testSubmitMultiple(RequestHandlerInterface $requestHandler)
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'multiple' => true,
-        ))->setRequestHandler($requestHandler)->getForm();
+        ])->setRequestHandler($requestHandler)->getForm();
 
-        $data = array(
+        $data = [
             $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo', 'foo.jpg'),
             $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo2', 'foo2.jpg'),
-        );
+        ];
 
         $form->submit($data);
         $this->assertSame($data, $form->getData());
@@ -93,9 +93,9 @@ public function testSubmitMultiple(RequestHandlerInterface $requestHandler)
     public function testDontPassValueToView(RequestHandlerInterface $requestHandler)
     {
         $form = $this->factory->createBuilder(static::TESTED_TYPE)->setRequestHandler($requestHandler)->getForm();
-        $form->submit(array(
+        $form->submit([
             'file' => $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo', 'foo.jpg'),
-        ));
+        ]);
 
         $this->assertEquals('', $form->createView()->vars['value']);
     }
@@ -115,15 +115,15 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitNullWhenMultiple()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
-        ));
+        ]);
         // submitted data when an input file is uploaded without choosing any file
-        $form->submit(array(null));
+        $form->submit([null]);
 
-        $this->assertSame(array(), $form->getData());
-        $this->assertSame(array(), $form->getNormData());
-        $this->assertSame(array(), $form->getViewData());
+        $this->assertSame([], $form->getData());
+        $this->assertSame([], $form->getNormData());
+        $this->assertSame([], $form->getViewData());
     }
 
     /**
@@ -145,16 +145,16 @@ public function testSubmittedFilePathsAreDropped(RequestHandlerInterface $reques
     public function testMultipleSubmittedFilePathsAreDropped(RequestHandlerInterface $requestHandler)
     {
         $form = $this->factory
-            ->createBuilder(static::TESTED_TYPE, null, array(
+            ->createBuilder(static::TESTED_TYPE, null, [
                 'multiple' => true,
-            ))
+            ])
             ->setRequestHandler($requestHandler)
             ->getForm();
-        $form->submit(array(
+        $form->submit([
             'file:///etc/passwd',
             $this->createUploadedFileMock(new HttpFoundationRequestHandler(), __DIR__.'/../../../Fixtures/foo', 'foo.jpg'),
             $this->createUploadedFileMock(new NativeRequestHandler(), __DIR__.'/../../../Fixtures/foo2', 'foo2.jpg'),
-        ));
+        ]);
 
         $this->assertCount(1, $form->getData());
     }
@@ -165,24 +165,24 @@ public function testMultipleSubmittedFilePathsAreDropped(RequestHandlerInterface
     public function testSubmitNonArrayValueWhenMultiple(RequestHandlerInterface $requestHandler)
     {
         $form = $this->factory
-            ->createBuilder(static::TESTED_TYPE, null, array(
+            ->createBuilder(static::TESTED_TYPE, null, [
                 'multiple' => true,
-            ))
+            ])
             ->setRequestHandler($requestHandler)
             ->getForm();
         $form->submit(null);
 
-        $this->assertSame(array(), $form->getData());
-        $this->assertSame(array(), $form->getNormData());
-        $this->assertSame(array(), $form->getViewData());
+        $this->assertSame([], $form->getData());
+        $this->assertSame([], $form->getNormData());
+        $this->assertSame([], $form->getViewData());
     }
 
     public function requestHandlerProvider()
     {
-        return array(
-            array(new HttpFoundationRequestHandler()),
-            array(new NativeRequestHandler()),
-        );
+        return [
+            [new HttpFoundationRequestHandler()],
+            [new NativeRequestHandler()],
+        ];
     }
 
     private function createUploadedFileMock(RequestHandlerInterface $requestHandler, $path, $originalName)
@@ -191,12 +191,12 @@ private function createUploadedFileMock(RequestHandlerInterface $requestHandler,
             return new UploadedFile($path, $originalName, null, 10, null, true);
         }
 
-        return array(
+        return [
             'name' => $originalName,
             'error' => 0,
             'type' => 'text/plain',
             'tmp_name' => $path,
             'size' => 10,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/FormTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/FormTypeTest.php
index 68f30ef16bc0..960d94ebb49f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/FormTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/FormTypeTest.php
@@ -60,11 +60,11 @@ public function testCreateFormInstances()
 
     public function testPassRequiredAsOption()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('required' => false));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['required' => false]);
 
         $this->assertFalse($form->isRequired());
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('required' => true));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['required' => true]);
 
         $this->assertTrue($form->isRequired());
     }
@@ -72,10 +72,10 @@ public function testPassRequiredAsOption()
     public function testSubmittedDataIsTrimmedBeforeTransforming()
     {
         $form = $this->factory->createBuilder(static::TESTED_TYPE)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'reverse[a]' => 'a',
-            )))
+            ]))
             ->setCompound(false)
             ->getForm();
 
@@ -87,11 +87,11 @@ public function testSubmittedDataIsTrimmedBeforeTransforming()
 
     public function testSubmittedDataIsNotTrimmedBeforeTransformingIfNoTrimming()
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array('trim' => false))
-            ->addViewTransformer(new FixedDataTransformer(array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, ['trim' => false])
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'reverse[ a ]' => ' a ',
-            )))
+            ]))
             ->setCompound(false)
             ->getForm();
 
@@ -103,7 +103,7 @@ public function testSubmittedDataIsNotTrimmedBeforeTransformingIfNoTrimming()
 
     public function testNonReadOnlyFormWithReadOnlyParentIsReadOnly()
     {
-        $view = $this->factory->createNamedBuilder('parent', static::TESTED_TYPE, null, array('attr' => array('readonly' => true)))
+        $view = $this->factory->createNamedBuilder('parent', static::TESTED_TYPE, null, ['attr' => ['readonly' => true]])
             ->add('child', static::TESTED_TYPE)
             ->getForm()
             ->createView();
@@ -114,7 +114,7 @@ public function testNonReadOnlyFormWithReadOnlyParentIsReadOnly()
     public function testReadOnlyFormWithNonReadOnlyParentIsReadOnly()
     {
         $view = $this->factory->createNamedBuilder('parent', static::TESTED_TYPE)
-            ->add('child', static::TESTED_TYPE, array('attr' => array('readonly' => true)))
+            ->add('child', static::TESTED_TYPE, ['attr' => ['readonly' => true]])
             ->getForm()
             ->createView();
 
@@ -133,7 +133,7 @@ public function testNonReadOnlyFormWithNonReadOnlyParentIsNotReadOnly()
 
     public function testPassMaxLengthToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array('attr' => array('maxlength' => 10)))
+        $view = $this->factory->create(static::TESTED_TYPE, null, ['attr' => ['maxlength' => 10]])
             ->createView();
 
         $this->assertSame(10, $view->vars['attr']['maxlength']);
@@ -141,23 +141,23 @@ public function testPassMaxLengthToView()
 
     public function testDataClassMayBeNull()
     {
-        $this->assertInstanceOf('Symfony\Component\Form\FormBuilderInterface', $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $this->assertInstanceOf('Symfony\Component\Form\FormBuilderInterface', $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => null,
-        )));
+        ]));
     }
 
     public function testDataClassMayBeAbstractClass()
     {
-        $this->assertInstanceOf('Symfony\Component\Form\FormBuilderInterface', $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $this->assertInstanceOf('Symfony\Component\Form\FormBuilderInterface', $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\AbstractAuthor',
-        )));
+        ]));
     }
 
     public function testDataClassMayBeInterface()
     {
-        $this->assertInstanceOf('Symfony\Component\Form\FormBuilderInterface', $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $this->assertInstanceOf('Symfony\Component\Form\FormBuilderInterface', $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\AuthorInterface',
-        )));
+        ]));
     }
 
     /**
@@ -165,22 +165,22 @@ public function testDataClassMayBeInterface()
      */
     public function testDataClassMustBeValidClassOrInterface()
     {
-        $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => 'foobar',
-        ));
+        ]);
     }
 
-    public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expectedData = array())
+    public function testSubmitNullUsesDefaultEmptyData($emptyData = [], $expectedData = [])
     {
         parent::testSubmitNullUsesDefaultEmptyData($emptyData, $expectedData);
     }
 
     public function testSubmitWithEmptyDataCreatesObjectIfClassAvailable()
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\Author',
             'required' => false,
-        ))
+        ])
             ->add('firstName', TextTypeTest::TESTED_TYPE)
             ->add('lastName', TextTypeTest::TESTED_TYPE)
             ->getForm();
@@ -188,7 +188,7 @@ public function testSubmitWithEmptyDataCreatesObjectIfClassAvailable()
         $this->assertNull($form->getData());
 
         // partially empty, still an object is created
-        $form->submit(array('firstName' => 'Bernhard', 'lastName' => ''));
+        $form->submit(['firstName' => 'Bernhard', 'lastName' => '']);
 
         $author = new Author();
         $author->firstName = 'Bernhard';
@@ -200,17 +200,17 @@ public function testSubmitWithEmptyDataCreatesObjectIfClassAvailable()
     public function testSubmitWithDefaultDataDontCreateObject()
     {
         $defaultAuthor = new Author();
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             // data class is inferred from the passed object
             'data' => $defaultAuthor,
             'required' => false,
-        ))
+        ])
             ->add('firstName', TextTypeTest::TESTED_TYPE)
             ->add('lastName', TextTypeTest::TESTED_TYPE)
             ->getForm();
 
         // partially empty
-        $form->submit(array('firstName' => 'Bernhard', 'lastName' => ''));
+        $form->submit(['firstName' => 'Bernhard', 'lastName' => '']);
 
         $author = new Author();
         $author->firstName = 'Bernhard';
@@ -222,50 +222,50 @@ public function testSubmitWithDefaultDataDontCreateObject()
 
     public function testSubmitWithEmptyDataCreatesArrayIfDataClassIsNull()
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => null,
             'required' => false,
-        ))
+        ])
             ->add('firstName', TextTypeTest::TESTED_TYPE)
             ->getForm();
 
         $this->assertNull($form->getData());
 
-        $form->submit(array('firstName' => 'Bernhard'));
+        $form->submit(['firstName' => 'Bernhard']);
 
-        $this->assertSame(array('firstName' => 'Bernhard'), $form->getData());
+        $this->assertSame(['firstName' => 'Bernhard'], $form->getData());
     }
 
     public function testSubmitEmptyWithEmptyDataDontCreateObjectIfNotRequired()
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\Author',
             'required' => false,
-        ))
+        ])
             ->add('firstName', TextTypeTest::TESTED_TYPE)
             ->add('lastName', TextTypeTest::TESTED_TYPE)
             ->getForm();
 
         $this->assertNull($form->getData());
 
-        $form->submit(array('firstName' => '', 'lastName' => ''));
+        $form->submit(['firstName' => '', 'lastName' => '']);
 
         $this->assertNull($form->getData());
     }
 
     public function testSubmitEmptyWithEmptyDataCreatesObjectIfRequired()
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\Author',
             'required' => true,
-        ))
+        ])
             ->add('firstName', TextTypeTest::TESTED_TYPE)
             ->add('lastName', TextTypeTest::TESTED_TYPE)
             ->getForm();
 
         $this->assertNull($form->getData());
 
-        $form->submit(array('firstName' => '', 'lastName' => ''));
+        $form->submit(['firstName' => '', 'lastName' => '']);
 
         $this->assertEquals(new Author(), $form->getData());
     }
@@ -281,20 +281,20 @@ public function testSubmitWithEmptyDataStoresArrayIfNoClassAvailable()
 
         $this->assertNull($form->getData());
 
-        $form->submit(array('firstName' => 'Bernhard'));
+        $form->submit(['firstName' => 'Bernhard']);
 
-        $this->assertSame(array('firstName' => 'Bernhard'), $form->getData());
+        $this->assertSame(['firstName' => 'Bernhard'], $form->getData());
     }
 
     public function testSubmitWithEmptyDataPassesEmptyStringToTransformerIfNotCompound()
     {
         $form = $this->factory->createBuilder(static::TESTED_TYPE)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 // required for the initial, internal setData(null)
                 '' => 'null',
                 // required to test that submit(null) is converted to ''
                 'empty' => '',
-            )))
+            ]))
             ->setCompound(false)
             ->getForm();
 
@@ -313,17 +313,17 @@ public function testSubmitWithEmptyDataUsesEmptyDataOption()
     {
         $author = new Author();
 
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\Author',
             'empty_data' => $author,
-        ))
+        ])
             ->add('firstName', TextTypeTest::TESTED_TYPE)
             ->getForm();
 
         $this->assertNull($form->getData());
         $this->assertNull($form->getViewData());
 
-        $form->submit(array('firstName' => 'Bernhard'));
+        $form->submit(['firstName' => 'Bernhard']);
 
         $this->assertSame($author, $form->getData());
         $this->assertEquals('Bernhard', $author->firstName);
@@ -334,7 +334,7 @@ public function testSubmitWithEmptyDataUsesEmptyDataOption()
      */
     public function testAttributesException()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array('attr' => ''));
+        $this->factory->create(static::TESTED_TYPE, null, ['attr' => '']);
     }
 
     public function testNameCanBeEmptyString()
@@ -349,18 +349,18 @@ public function testSubformDoesntCallSettersForReferences()
         $author = new FormTest_AuthorWithoutRefSetter(new Author());
 
         $builder = $this->factory->createBuilder(static::TESTED_TYPE, $author);
-        $builder->add('reference', static::TESTED_TYPE, array(
+        $builder->add('reference', static::TESTED_TYPE, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\Author',
-        ));
+        ]);
         $builder->get('reference')->add('firstName', TextTypeTest::TESTED_TYPE);
         $form = $builder->getForm();
 
-        $form->submit(array(
+        $form->submit([
             // reference has a getter, but no setter
-            'reference' => array(
+            'reference' => [
                 'firstName' => 'Foo',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertEquals('Foo', $author->getReference()->firstName);
     }
@@ -372,20 +372,20 @@ public function testSubformCallsSettersIfTheObjectChanged()
         $newReference = new Author();
 
         $builder = $this->factory->createBuilder(static::TESTED_TYPE, $author);
-        $builder->add('referenceCopy', static::TESTED_TYPE, array(
+        $builder->add('referenceCopy', static::TESTED_TYPE, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\Author',
-        ));
+        ]);
         $builder->get('referenceCopy')->add('firstName', TextTypeTest::TESTED_TYPE);
         $form = $builder->getForm();
 
         $form['referenceCopy']->setData($newReference); // new author object
 
-        $form->submit(array(
+        $form->submit([
             // referenceCopy has a getter that returns a copy
-            'referenceCopy' => array(
+            'referenceCopy' => [
                 'firstName' => 'Foo',
-        ),
-        ));
+        ],
+        ]);
 
         $this->assertEquals('Foo', $author->getReferenceCopy()->firstName);
     }
@@ -395,19 +395,19 @@ public function testSubformCallsSettersIfByReferenceIsFalse()
         $author = new FormTest_AuthorWithoutRefSetter(new Author());
 
         $builder = $this->factory->createBuilder(static::TESTED_TYPE, $author);
-        $builder->add('referenceCopy', static::TESTED_TYPE, array(
+        $builder->add('referenceCopy', static::TESTED_TYPE, [
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\Author',
             'by_reference' => false,
-        ));
+        ]);
         $builder->get('referenceCopy')->add('firstName', TextTypeTest::TESTED_TYPE);
         $form = $builder->getForm();
 
-        $form->submit(array(
+        $form->submit([
             // referenceCopy has a getter that returns a copy
-            'referenceCopy' => array(
+            'referenceCopy' => [
                 'firstName' => 'Foo',
-            ),
-        ));
+            ],
+        ]);
 
         // firstName can only be updated if setReferenceCopy() was called
         $this->assertEquals('Foo', $author->getReferenceCopy()->firstName);
@@ -427,9 +427,9 @@ function ($value) { // reverseTransform
         ));
         $form = $builder->getForm();
 
-        $form->submit(array(
-            'referenceCopy' => array(), // doesn't matter actually
-        ));
+        $form->submit([
+            'referenceCopy' => [], // doesn't matter actually
+        ]);
 
         // firstName can only be updated if setReferenceCopy() was called
         $this->assertEquals('foobar', $author->getReferenceCopy());
@@ -439,7 +439,7 @@ public function testSubformAlwaysInsertsIntoArrays()
     {
         $ref1 = new Author();
         $ref2 = new Author();
-        $author = array('referenceCopy' => $ref1);
+        $author = ['referenceCopy' => $ref1];
 
         $builder = $this->factory->createBuilder(static::TESTED_TYPE);
         $builder->setData($author);
@@ -452,9 +452,9 @@ function ($value) use ($ref2) { // reverseTransform
         ));
         $form = $builder->getForm();
 
-        $form->submit(array(
-            'referenceCopy' => array(), // doesn't matter actually
-        ));
+        $form->submit([
+            'referenceCopy' => [], // doesn't matter actually
+        ]);
 
         // the new reference was inserted into the array
         $author = $form->getData();
@@ -491,28 +491,28 @@ public function testErrorBubblingIfCompound()
 
     public function testNoErrorBubblingIfNotCompound()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'compound' => false,
-        ));
+        ]);
 
         $this->assertFalse($form->getConfig()->getErrorBubbling());
     }
 
     public function testOverrideErrorBubbling()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'compound' => false,
             'error_bubbling' => true,
-        ));
+        ]);
 
         $this->assertTrue($form->getConfig()->getErrorBubbling());
     }
 
     public function testPropertyPath()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'property_path' => 'foo',
-        ));
+        ]);
 
         $this->assertEquals(new PropertyPath('foo'), $form->getPropertyPath());
         $this->assertTrue($form->getConfig()->getMapped());
@@ -520,9 +520,9 @@ public function testPropertyPath()
 
     public function testPropertyPathNullImpliesDefault()
     {
-        $form = $this->factory->createNamed('name', static::TESTED_TYPE, null, array(
+        $form = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
             'property_path' => null,
-        ));
+        ]);
 
         $this->assertEquals(new PropertyPath('name'), $form->getPropertyPath());
         $this->assertTrue($form->getConfig()->getMapped());
@@ -530,10 +530,10 @@ public function testPropertyPathNullImpliesDefault()
 
     public function testNotMapped()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'property_path' => 'foo',
             'mapped' => false,
-        ));
+        ]);
 
         $this->assertEquals(new PropertyPath('foo'), $form->getPropertyPath());
         $this->assertFalse($form->getConfig()->getMapped());
@@ -550,7 +550,7 @@ public function testViewValidNotSubmitted()
     public function testViewNotValidSubmitted()
     {
         $form = $this->factory->create(static::TESTED_TYPE);
-        $form->submit(array());
+        $form->submit([]);
         $form->addError(new FormError('An error'));
 
         $this->assertFalse($form->createView()->vars['valid']);
@@ -567,17 +567,17 @@ public function testViewSubmittedNotSubmitted()
     public function testViewSubmittedSubmitted()
     {
         $form = $this->factory->create(static::TESTED_TYPE);
-        $form->submit(array());
+        $form->submit([]);
 
         $this->assertTrue($form->createView()->vars['submitted']);
     }
 
     public function testDataOptionSupersedesSetDataCalls()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'data' => 'default',
             'compound' => false,
-        ));
+        ]);
 
         $form->setData('foobar');
 
@@ -586,9 +586,9 @@ public function testDataOptionSupersedesSetDataCalls()
 
     public function testPassedDataSupersedesSetDataCalls()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, 'default', array(
+        $form = $this->factory->create(static::TESTED_TYPE, 'default', [
             'compound' => false,
-        ));
+        ]);
 
         $form->setData('foobar');
 
@@ -597,10 +597,10 @@ public function testPassedDataSupersedesSetDataCalls()
 
     public function testDataOptionSupersedesSetDataCallsIfNull()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'data' => null,
             'compound' => false,
-        ));
+        ]);
 
         $form->setData('foobar');
 
@@ -610,12 +610,12 @@ public function testDataOptionSupersedesSetDataCallsIfNull()
     public function testNormDataIsPassedToView()
     {
         $view = $this->factory->createBuilder(static::TESTED_TYPE)
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
                 'foo' => 'bar',
-            )))
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ]))
+            ->addViewTransformer(new FixedDataTransformer([
                 'bar' => 'baz',
-            )))
+            ]))
             ->setData('foo')
             ->getForm()
             ->createView();
@@ -627,9 +627,9 @@ public function testNormDataIsPassedToView()
     // https://github.com/symfony/symfony/issues/6862
     public function testPassZeroLabelToView()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array(
+        $view = $this->factory->create(static::TESTED_TYPE, null, [
                 'label' => '0',
-            ))
+            ])
             ->createView();
 
         $this->assertSame('0', $view->vars['label']);
@@ -637,6 +637,6 @@ public function testPassZeroLabelToView()
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        parent::testSubmitNull(array(), array(), array());
+        parent::testSubmitNull([], [], []);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/IntegerTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/IntegerTypeTest.php
index fd3c2faf6aea..273402aefeb3 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/IntegerTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/IntegerTypeTest.php
@@ -41,9 +41,9 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitNullUsesDefaultEmptyData($emptyData = '10', $expectedData = 10)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php
index 8d469d2b41ba..60614a97177f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php
@@ -60,6 +60,6 @@ public function testInvalidChoiceValuesAreDropped()
     {
         $type = new LanguageType();
 
-        $this->assertSame(array(), $type->loadChoicesForValues(array('foo')));
+        $this->assertSame([], $type->loadChoicesForValues(['foo']));
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php
index ac1a65ad1fb9..e5b3ec9d2ab1 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php
@@ -50,6 +50,6 @@ public function testInvalidChoiceValuesAreDropped()
     {
         $type = new LocaleType();
 
-        $this->assertSame(array(), $type->loadChoicesForValues(array('foo')));
+        $this->assertSame([], $type->loadChoicesForValues(['foo']));
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/MoneyTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/MoneyTypeTest.php
index 3371a1ee2d9c..f75ea9024905 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/MoneyTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/MoneyTypeTest.php
@@ -40,7 +40,7 @@ public function testMoneyPatternWorksForYen()
     {
         \Locale::setDefault('en_US');
 
-        $view = $this->factory->create(static::TESTED_TYPE, null, array('currency' => 'JPY'))
+        $view = $this->factory->create(static::TESTED_TYPE, null, ['currency' => 'JPY'])
             ->createView();
 
         $this->assertSame('¥ {{ widget }}', $view->vars['money_pattern']);
@@ -51,8 +51,8 @@ public function testPassDifferentPatternsForDifferentCurrencies()
     {
         \Locale::setDefault('de_DE');
 
-        $view1 = $this->factory->create(static::TESTED_TYPE, null, array('currency' => 'GBP'))->createView();
-        $view2 = $this->factory->create(static::TESTED_TYPE, null, array('currency' => 'EUR'))->createView();
+        $view1 = $this->factory->create(static::TESTED_TYPE, null, ['currency' => 'GBP'])->createView();
+        $view2 = $this->factory->create(static::TESTED_TYPE, null, ['currency' => 'EUR'])->createView();
 
         $this->assertSame('{{ widget }} £', $view1->vars['money_pattern']);
         $this->assertSame('{{ widget }} €', $view2->vars['money_pattern']);
@@ -65,7 +65,7 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testMoneyPatternWithoutCurrency()
     {
-        $view = $this->factory->create(static::TESTED_TYPE, null, array('currency' => false))
+        $view = $this->factory->create(static::TESTED_TYPE, null, ['currency' => false])
             ->createView();
 
         $this->assertSame('{{ widget }}', $view->vars['money_pattern']);
@@ -73,9 +73,9 @@ public function testMoneyPatternWithoutCurrency()
 
     public function testSubmitNullUsesDefaultEmptyData($emptyData = '10.00', $expectedData = 10.0)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/NumberTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/NumberTypeTest.php
index a15d6f664245..c19c82b11769 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/NumberTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/NumberTypeTest.php
@@ -37,7 +37,7 @@ public function testDefaultFormatting()
 
     public function testDefaultFormattingWithGrouping()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('grouping' => true));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['grouping' => true]);
         $form->setData('12345.67890');
 
         $this->assertSame('12.345,679', $form->createView()->vars['value']);
@@ -45,7 +45,7 @@ public function testDefaultFormattingWithGrouping()
 
     public function testDefaultFormattingWithScale()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('scale' => 2));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['scale' => 2]);
         $form->setData('12345.67890');
 
         $this->assertSame('12345,68', $form->createView()->vars['value']);
@@ -53,7 +53,7 @@ public function testDefaultFormattingWithScale()
 
     public function testDefaultFormattingWithRounding()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('scale' => 0, 'rounding_mode' => \NumberFormatter::ROUND_UP));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['scale' => 0, 'rounding_mode' => \NumberFormatter::ROUND_UP]);
         $form->setData('12345.54321');
 
         $this->assertSame('12346', $form->createView()->vars['value']);
@@ -66,9 +66,9 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitNullUsesDefaultEmptyData($emptyData = '10', $expectedData = 10.0)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/PasswordTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/PasswordTypeTest.php
index c48240c651f2..872311b91df0 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/PasswordTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/PasswordTypeTest.php
@@ -33,7 +33,7 @@ public function testEmptyIfSubmitted()
 
     public function testNotEmptyIfSubmittedAndNotAlwaysEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('always_empty' => false));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['always_empty' => false]);
         $form->submit('pAs5w0rd');
 
         $this->assertSame('pAs5w0rd', $form->createView()->vars['value']);
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/RepeatedTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/RepeatedTypeTest.php
index 8021abdb8498..c380c0590b8c 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/RepeatedTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/RepeatedTypeTest.php
@@ -26,9 +26,9 @@ protected function setUp()
     {
         parent::setUp();
 
-        $this->form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->form = $this->factory->create(static::TESTED_TYPE, null, [
             'type' => TextTypeTest::TESTED_TYPE,
-        ));
+        ]);
     }
 
     public function testSetData()
@@ -41,10 +41,10 @@ public function testSetData()
 
     public function testSetOptions()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'type' => TextTypeTest::TESTED_TYPE,
-            'options' => array('label' => 'Global'),
-        ));
+            'options' => ['label' => 'Global'],
+        ]);
 
         $this->assertSame('Global', $form['first']->getConfig()->getOption('label'));
         $this->assertSame('Global', $form['second']->getConfig()->getOption('label'));
@@ -54,12 +54,12 @@ public function testSetOptions()
 
     public function testSetOptionsPerChild()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             // the global required value cannot be overridden
             'type' => TextTypeTest::TESTED_TYPE,
-            'first_options' => array('label' => 'Test', 'required' => false),
-            'second_options' => array('label' => 'Test2'),
-        ));
+            'first_options' => ['label' => 'Test', 'required' => false],
+            'second_options' => ['label' => 'Test2'],
+        ]);
 
         $this->assertSame('Test', $form['first']->getConfig()->getOption('label'));
         $this->assertSame('Test2', $form['second']->getConfig()->getOption('label'));
@@ -69,10 +69,10 @@ public function testSetOptionsPerChild()
 
     public function testSetRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
             'type' => TextTypeTest::TESTED_TYPE,
-        ));
+        ]);
 
         $this->assertFalse($form['first']->isRequired());
         $this->assertFalse($form['second']->isRequired());
@@ -83,10 +83,10 @@ public function testSetRequired()
      */
     public function testSetInvalidOptions()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'type' => TextTypeTest::TESTED_TYPE,
             'options' => 'bad value',
-        ));
+        ]);
     }
 
     /**
@@ -94,10 +94,10 @@ public function testSetInvalidOptions()
      */
     public function testSetInvalidFirstOptions()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'type' => TextTypeTest::TESTED_TYPE,
             'first_options' => 'bad value',
-        ));
+        ]);
     }
 
     /**
@@ -105,17 +105,17 @@ public function testSetInvalidFirstOptions()
      */
     public function testSetInvalidSecondOptions()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'type' => TextTypeTest::TESTED_TYPE,
             'second_options' => 'bad value',
-        ));
+        ]);
     }
 
     public function testSetErrorBubblingToTrue()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'error_bubbling' => true,
-        ));
+        ]);
 
         $this->assertTrue($form->getConfig()->getOption('error_bubbling'));
         $this->assertTrue($form['first']->getConfig()->getOption('error_bubbling'));
@@ -124,9 +124,9 @@ public function testSetErrorBubblingToTrue()
 
     public function testSetErrorBubblingToFalse()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'error_bubbling' => false,
-        ));
+        ]);
 
         $this->assertFalse($form->getConfig()->getOption('error_bubbling'));
         $this->assertFalse($form['first']->getConfig()->getOption('error_bubbling'));
@@ -135,11 +135,11 @@ public function testSetErrorBubblingToFalse()
 
     public function testSetErrorBubblingIndividually()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'error_bubbling' => true,
-            'options' => array('error_bubbling' => false),
-            'second_options' => array('error_bubbling' => true),
-        ));
+            'options' => ['error_bubbling' => false],
+            'second_options' => ['error_bubbling' => true],
+        ]);
 
         $this->assertTrue($form->getConfig()->getOption('error_bubbling'));
         $this->assertFalse($form['first']->getConfig()->getOption('error_bubbling'));
@@ -148,11 +148,11 @@ public function testSetErrorBubblingIndividually()
 
     public function testSetOptionsPerChildAndOverwrite()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'type' => TextTypeTest::TESTED_TYPE,
-            'options' => array('label' => 'Label'),
-            'second_options' => array('label' => 'Second label'),
-        ));
+            'options' => ['label' => 'Label'],
+            'second_options' => ['label' => 'Second label'],
+        ]);
 
         $this->assertSame('Label', $form['first']->getConfig()->getOption('label'));
         $this->assertSame('Second label', $form['second']->getConfig()->getOption('label'));
@@ -162,7 +162,7 @@ public function testSetOptionsPerChildAndOverwrite()
 
     public function testSubmitUnequal()
     {
-        $input = array('first' => 'foo', 'second' => 'bar');
+        $input = ['first' => 'foo', 'second' => 'bar'];
 
         $this->form->submit($input);
 
@@ -175,7 +175,7 @@ public function testSubmitUnequal()
 
     public function testSubmitEqual()
     {
-        $input = array('first' => 'foo', 'second' => 'foo');
+        $input = ['first' => 'foo', 'second' => 'foo'];
 
         $this->form->submit($input);
 
@@ -188,6 +188,6 @@ public function testSubmitEqual()
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        parent::testSubmitNull($expected, $norm, array('first' => null, 'second' => null));
+        parent::testSubmitNull($expected, $norm, ['first' => null, 'second' => null]);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/TextTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/TextTypeTest.php
index c4dba3734876..42853f607f6b 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/TextTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/TextTypeTest.php
@@ -22,9 +22,9 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitNullReturnsNullWithEmptyDataAsString()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, 'name', array(
+        $form = $this->factory->create(static::TESTED_TYPE, 'name', [
             'empty_data' => '',
-        ));
+        ]);
 
         $form->submit(null);
         $this->assertSame('', $form->getData());
@@ -34,11 +34,11 @@ public function testSubmitNullReturnsNullWithEmptyDataAsString()
 
     public function provideZeros()
     {
-        return array(
-            array(0, '0'),
-            array('0', '0'),
-            array('00000', '00000'),
-        );
+        return [
+            [0, '0'],
+            ['0', '0'],
+            ['00000', '00000'],
+        ];
     }
 
     /**
@@ -48,9 +48,9 @@ public function provideZeros()
      */
     public function testSetDataThroughParamsWithZero($data, $dataAsString)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'data' => $data,
-        ));
+        ]);
         $view = $form->createView();
 
         $this->assertFalse($form->isEmpty());
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimeTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimeTypeTest.php
index a9ba7f022e30..b445c8c5bfec 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimeTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimeTypeTest.php
@@ -20,16 +20,16 @@ class TimeTypeTest extends BaseTypeTest
 
     public function testSubmitDateTime()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'datetime',
-        ));
+        ]);
 
-        $input = array(
+        $input = [
             'hour' => '3',
             'minute' => '4',
-        );
+        ];
 
         $form->submit($input);
 
@@ -41,16 +41,16 @@ public function testSubmitDateTime()
 
     public function testSubmitString()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'string',
-        ));
+        ]);
 
-        $input = array(
+        $input = [
             'hour' => '3',
             'minute' => '4',
-        );
+        ];
 
         $form->submit($input);
 
@@ -60,16 +60,16 @@ public function testSubmitString()
 
     public function testSubmitTimestamp()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'timestamp',
-        ));
+        ]);
 
-        $input = array(
+        $input = [
             'hour' => '3',
             'minute' => '4',
-        );
+        ];
 
         $form->submit($input);
 
@@ -81,16 +81,16 @@ public function testSubmitTimestamp()
 
     public function testSubmitArray()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'array',
-        ));
+        ]);
 
-        $input = array(
+        $input = [
             'hour' => '3',
             'minute' => '4',
-        );
+        ];
 
         $form->submit($input);
 
@@ -100,12 +100,12 @@ public function testSubmitArray()
 
     public function testSubmitDatetimeSingleText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'datetime',
             'widget' => 'single_text',
-        ));
+        ]);
 
         $form->submit('03:04');
 
@@ -115,13 +115,13 @@ public function testSubmitDatetimeSingleText()
 
     public function testSubmitDatetimeSingleTextWithoutMinutes()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'datetime',
             'widget' => 'single_text',
             'with_minutes' => false,
-        ));
+        ]);
 
         $form->submit('03');
 
@@ -131,17 +131,17 @@ public function testSubmitDatetimeSingleTextWithoutMinutes()
 
     public function testSubmitArraySingleText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'array',
             'widget' => 'single_text',
-        ));
+        ]);
 
-        $data = array(
+        $data = [
             'hour' => '3',
             'minute' => '4',
-        );
+        ];
 
         $form->submit('03:04');
 
@@ -151,17 +151,17 @@ public function testSubmitArraySingleText()
 
     public function testSubmitArraySingleTextWithoutMinutes()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'array',
             'widget' => 'single_text',
             'with_minutes' => false,
-        ));
+        ]);
 
-        $data = array(
+        $data = [
             'hour' => '3',
-        );
+        ];
 
         $form->submit('03');
 
@@ -171,19 +171,19 @@ public function testSubmitArraySingleTextWithoutMinutes()
 
     public function testSubmitArraySingleTextWithSeconds()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'array',
             'widget' => 'single_text',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $data = array(
+        $data = [
             'hour' => '3',
             'minute' => '4',
             'second' => '5',
-        );
+        ];
 
         $form->submit('03:04:05');
 
@@ -193,12 +193,12 @@ public function testSubmitArraySingleTextWithSeconds()
 
     public function testSubmitStringSingleText()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, 
10000
null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'string',
             'widget' => 'single_text',
-        ));
+        ]);
 
         $form->submit('03:04');
 
@@ -208,13 +208,13 @@ public function testSubmitStringSingleText()
 
     public function testSubmitStringSingleTextWithoutMinutes()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'string',
             'widget' => 'single_text',
             'with_minutes' => false,
-        ));
+        ]);
 
         $form->submit('03');
 
@@ -224,13 +224,13 @@ public function testSubmitStringSingleTextWithoutMinutes()
 
     public function testSubmitWithSecondsAndBrowserOmissionSeconds()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'string',
             'widget' => 'single_text',
             'with_seconds' => true,
-        ));
+        ]);
 
         $form->submit('03:04');
 
@@ -240,40 +240,40 @@ public function testSubmitWithSecondsAndBrowserOmissionSeconds()
 
     public function testSetDataWithoutMinutes()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'datetime',
             'with_minutes' => false,
-        ));
+        ]);
 
         $form->setData(new \DateTime('03:04:05 UTC'));
 
-        $this->assertEquals(array('hour' => 3), $form->getViewData());
+        $this->assertEquals(['hour' => 3], $form->getViewData());
     }
 
     public function testSetDataWithSeconds()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'datetime',
             'with_seconds' => true,
-        ));
+        ]);
 
         $form->setData(new \DateTime('03:04:05 UTC'));
 
-        $this->assertEquals(array('hour' => 3, 'minute' => 4, 'second' => 5), $form->getViewData());
+        $this->assertEquals(['hour' => 3, 'minute' => 4, 'second' => 5], $form->getViewData());
     }
 
     public function testSetDataDifferentTimezones()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'America/New_York',
             'view_timezone' => 'Asia/Hong_Kong',
             'input' => 'string',
             'with_seconds' => true,
-        ));
+        ]);
 
         $dateTime = new \DateTime('2013-01-01 12:04:05');
         $dateTime->setTimezone(new \DateTimeZone('America/New_York'));
@@ -283,23 +283,23 @@ public function testSetDataDifferentTimezones()
         $outputTime = clone $dateTime;
         $outputTime->setTimezone(new \DateTimeZone('Asia/Hong_Kong'));
 
-        $displayedData = array(
+        $displayedData = [
             'hour' => (int) $outputTime->format('H'),
             'minute' => (int) $outputTime->format('i'),
             'second' => (int) $outputTime->format('s'),
-        );
+        ];
 
         $this->assertEquals($displayedData, $form->getViewData());
     }
 
     public function testSetDataDifferentTimezonesDateTime()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'America/New_York',
             'view_timezone' => 'Asia/Hong_Kong',
             'input' => 'datetime',
             'with_seconds' => true,
-        ));
+        ]);
 
         $dateTime = new \DateTime('12:04:05');
         $dateTime->setTimezone(new \DateTimeZone('America/New_York'));
@@ -309,11 +309,11 @@ public function testSetDataDifferentTimezonesDateTime()
         $outputTime = clone $dateTime;
         $outputTime->setTimezone(new \DateTimeZone('Asia/Hong_Kong'));
 
-        $displayedData = array(
+        $displayedData = [
             'hour' => (int) $outputTime->format('H'),
             'minute' => (int) $outputTime->format('i'),
             'second' => (int) $outputTime->format('s'),
-        );
+        ];
 
         $this->assertEquals($dateTime, $form->getData());
         $this->assertEquals($displayedData, $form->getViewData());
@@ -321,59 +321,59 @@ public function testSetDataDifferentTimezonesDateTime()
 
     public function testHoursOption()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'hours' => array(6, 7),
-        ));
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'hours' => [6, 7],
+        ]);
 
         $view = $form->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView('6', '6', '06'),
             new ChoiceView('7', '7', '07'),
-        ), $view['hour']->vars['choices']);
+        ], $view['hour']->vars['choices']);
     }
 
     public function testIsMinuteWithinRangeReturnsTrueIfWithin()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'minutes' => array(6, 7),
-        ));
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'minutes' => [6, 7],
+        ]);
 
         $view = $form->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView('6', '6', '06'),
             new ChoiceView('7', '7', '07'),
-        ), $view['minute']->vars['choices']);
+        ], $view['minute']->vars['choices']);
     }
 
     public function testIsSecondWithinRangeReturnsTrueIfWithin()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'seconds' => array(6, 7),
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'seconds' => [6, 7],
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ChoiceView('6', '6', '06'),
             new ChoiceView('7', '7', '07'),
-        ), $view['second']->vars['choices']);
+        ], $view['second']->vars['choices']);
     }
 
     public function testIsPartiallyFilledReturnsFalseIfCompletelyEmpty()
     {
         $this->markTestIncomplete('Needs to be reimplemented using validators');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'choice',
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'hour' => '',
             'minute' => '',
-        ));
+        ]);
 
         $this->assertFalse($form->isPartiallyFilled());
     }
@@ -382,16 +382,16 @@ public function testIsPartiallyFilledReturnsFalseIfCompletelyEmptyWithSeconds()
     {
         $this->markTestIncomplete('Needs to be reimplemented using validators');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'choice',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'hour' => '',
             'minute' => '',
             'second' => '',
-        ));
+        ]);
 
         $this->assertFalse($form->isPartiallyFilled());
     }
@@ -400,14 +400,14 @@ public function testIsPartiallyFilledReturnsFalseIfCompletelyFilled()
     {
         $this->markTestIncomplete('Needs to be reimplemented using validators');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'choice',
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'hour' => '0',
             'minute' => '0',
-        ));
+        ]);
 
         $this->assertFalse($form->isPartiallyFilled());
     }
@@ -416,16 +416,16 @@ public function testIsPartiallyFilledReturnsFalseIfCompletelyFilledWithSeconds()
     {
         $this->markTestIncomplete('Needs to be reimplemented using validators');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'choice',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'hour' => '0',
             'minute' => '0',
             'second' => '0',
-        ));
+        ]);
 
         $this->assertFalse($form->isPartiallyFilled());
     }
@@ -434,16 +434,16 @@ public function testIsPartiallyFilledReturnsTrueIfChoiceAndHourEmpty()
     {
         $this->markTestIncomplete('Needs to be reimplemented using validators');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'choice',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'hour' => '',
             'minute' => '0',
             'second' => '0',
-        ));
+        ]);
 
         $this->assertTrue($form->isPartiallyFilled());
     }
@@ -452,16 +452,16 @@ public function testIsPartiallyFilledReturnsTrueIfChoiceAndMinuteEmpty()
     {
         $this->markTestIncomplete('Needs to be reimplemented using validators');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'choice',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'hour' => '0',
             'minute' => '',
             'second' => '0',
-        ));
+        ]);
 
         $this->assertTrue($form->isPartiallyFilled());
     }
@@ -470,16 +470,16 @@ public function testIsPartiallyFilledReturnsTrueIfChoiceAndSecondsEmpty()
     {
         $this->markTestIncomplete('Needs to be reimplemented using validators');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'choice',
             'with_seconds' => true,
-        ));
+        ]);
 
-        $form->submit(array(
+        $form->submit([
             'hour' => '0',
             'minute' => '0',
             'second' => '',
-        ));
+        ]);
 
         $this->assertTrue($form->isPartiallyFilled());
     }
@@ -493,9 +493,9 @@ public function testInitializeWithDateTime()
 
     public function testSingleTextWidgetShouldUseTheRightInputType()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertEquals('time', $view->vars['type']);
@@ -503,10 +503,10 @@ public function testSingleTextWidgetShouldUseTheRightInputType()
 
     public function testSingleTextWidgetWithSecondsShouldHaveRightStepAttribute()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertArrayHasKey('step', $view->vars['attr']);
@@ -515,13 +515,13 @@ public function testSingleTextWidgetWithSecondsShouldHaveRightStepAttribute()
 
     public function testSingleTextWidgetWithSecondsShouldNotOverrideStepAttribute()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
             'with_seconds' => true,
-            'attr' => array(
+            'attr' => [
                 'step' => 30,
-            ),
-        ));
+            ],
+        ]);
 
         $view = $form->createView();
         $this->assertArrayHasKey('step', $view->vars['attr']);
@@ -530,10 +530,10 @@ public function testSingleTextWidgetWithSecondsShouldNotOverrideStepAttribute()
 
     public function testDontPassHtml5TypeIfHtml5NotAllowed()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => 'single_text',
             'html5' => false,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertArrayNotHasKey('type', $view->vars);
@@ -541,10 +541,10 @@ public function testDontPassHtml5TypeIfHtml5NotAllowed()
 
     public function testPassDefaultPlaceholderToViewIfNotRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('', $view['hour']->vars['placeholder']);
@@ -554,10 +554,10 @@ public function testPassDefaultPlaceholderToViewIfNotRequired()
 
     public function testPassNoPlaceholderToViewIfRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => true,
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertNull($view['hour']->vars['placeholder']);
@@ -567,10 +567,10 @@ public function testPassNoPlaceholderToViewIfRequired()
 
     public function testPassPlaceholderAsString()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'placeholder' => 'Empty',
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('Empty', $view['hour']->vars['placeholder']);
@@ -580,14 +580,14 @@ public function testPassPlaceholderAsString()
 
     public function testPassPlaceholderAsArray()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'placeholder' => array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'placeholder' => [
                 'hour' => 'Empty hour',
                 'minute' => 'Empty minute',
                 'second' => 'Empty second',
-            ),
+            ],
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('Empty hour', $view['hour']->vars['placeholder']);
@@ -597,14 +597,14 @@ public function testPassPlaceholderAsArray()
 
     public function testPassPlaceholderAsPartialArrayAddEmptyIfNotRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => false,
-            'placeholder' => array(
+            'placeholder' => [
                 'hour' => 'Empty hour',
                 'second' => 'Empty second',
-            ),
+            ],
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('Empty hour', $view['hour']->vars['placeholder']);
@@ -614,14 +614,14 @@ public function testPassPlaceholderAsPartialArrayAddEmptyIfNotRequired()
 
     public function testPassPlaceholderAsPartialArrayAddNullIfRequired()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'required' => true,
-            'placeholder' => array(
+            'placeholder' => [
                 'hour' => 'Empty hour',
                 'second' => 'Empty second',
-            ),
+            ],
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('Empty hour', $view['hour']->vars['placeholder']);
@@ -631,10 +631,10 @@ public function testPassPlaceholderAsPartialArrayAddNullIfRequired()
 
     public function provideCompoundWidgets()
     {
-        return array(
-            array('text'),
-            array('choice'),
-        );
+        return [
+            ['text'],
+            ['choice'],
+        ];
     }
 
     /**
@@ -643,13 +643,13 @@ public function provideCompoundWidgets()
     public function testHourErrorsBubbleUp($widget)
     {
         $error = new FormError('Invalid!');
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
-        ));
+        ]);
         $form['hour']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['hour']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['hour']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     /**
@@ -658,13 +658,13 @@ public function testHourErrorsBubbleUp($widget)
     public function testMinuteErrorsBubbleUp($widget)
     {
         $error = new FormError('Invalid!');
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
-        ));
+        ]);
         $form['minute']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['minute']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['minute']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     /**
@@ -673,14 +673,14 @@ public function testMinuteErrorsBubbleUp($widget)
     public function testSecondErrorsBubbleUp($widget)
     {
         $error = new FormError('Invalid!');
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
             'with_seconds' => true,
-        ));
+        ]);
         $form['second']->addError($error);
 
-        $this->assertSame(array(), iterator_to_array($form['second']->getErrors()));
-        $this->assertSame(array($error), iterator_to_array($form->getErrors()));
+        $this->assertSame([], iterator_to_array($form['second']->getErrors()));
+        $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
     /**
@@ -688,10 +688,10 @@ public function testSecondErrorsBubbleUp($widget)
      */
     public function testInitializeWithSecondsAndWithoutMinutes()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'with_minutes' => false,
             'with_seconds' => true,
-        ));
+        ]);
     }
 
     /**
@@ -699,9 +699,9 @@ public function testInitializeWithSecondsAndWithoutMinutes()
      */
     public function testThrowExceptionIfHoursIsInvalid()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'hours' => 'bad value',
-        ));
+        ]);
     }
 
     /**
@@ -709,9 +709,9 @@ public function testThrowExceptionIfHoursIsInvalid()
      */
     public function testThrowExceptionIfMinutesIsInvalid()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'minutes' => 'bad value',
-        ));
+        ]);
     }
 
     /**
@@ -719,9 +719,9 @@ public function testThrowExceptionIfMinutesIsInvalid()
      */
     public function testThrowExceptionIfSecondsIsInvalid()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'seconds' => 'bad value',
-        ));
+        ]);
     }
 
     public function testPassDefaultChoiceTranslationDomain()
@@ -735,10 +735,10 @@ public function testPassDefaultChoiceTranslationDomain()
 
     public function testPassChoiceTranslationDomainAsString()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'choice_translation_domain' => 'messages',
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('messages', $view['hour']->vars['choice_translation_domain']);
@@ -748,13 +748,13 @@ public function testPassChoiceTranslationDomainAsString()
 
     public function testPassChoiceTranslationDomainAsArray()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'choice_translation_domain' => array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'choice_translation_domain' => [
                 'hour' => 'foo',
                 'second' => 'test',
-            ),
+            ],
             'with_seconds' => true,
-        ));
+        ]);
 
         $view = $form->createView();
         $this->assertSame('foo', $view['hour']->vars['choice_translation_domain']);
@@ -764,20 +764,20 @@ public function testPassChoiceTranslationDomainAsArray()
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
     {
-        $view = array('hour' => '', 'minute' => '');
+        $view = ['hour' => '', 'minute' => ''];
 
         parent::testSubmitNull($expected, $norm, $view);
     }
 
-    public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expectedData = null)
+    public function testSubmitNullUsesDefaultEmptyData($emptyData = [], $expectedData = null)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         // view transformer writes back empty strings in the view data
-        $this->assertSame(array('hour' => '', 'minute' => ''), $form->getViewData());
+        $this->assertSame(['hour' => '', 'minute' => ''], $form->getViewData());
         $this->assertSame($expectedData, $form->getNormData());
         $this->assertSame($expectedData, $form->getData());
     }
@@ -787,10 +787,10 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = array(), $expect
      */
     public function testSubmitNullUsesDateEmptyData($widget, $emptyData, $expectedData)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'widget' => $widget,
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
@@ -802,10 +802,10 @@ public function provideEmptyData()
     {
         $expectedData = \DateTime::createFromFormat('Y-m-d H:i', '1970-01-01 21:23');
 
-        return array(
-            'Simple field' => array('single_text', '21:23', $expectedData),
-            'Compound text field' => array('text', array('hour' => '21', 'minute' => '23'), $expectedData),
-            'Compound choice field' => array('choice', array('hour' => '21', 'minute' => '23'), $expectedData),
-        );
+        return [
+            'Simple field' => ['single_text', '21:23', $expectedData],
+            'Compound text field' => ['text', ['hour' => '21', 'minute' => '23'], $expectedData],
+            'Compound choice field' => ['choice', ['hour' => '21', 'minute' => '23'], $expectedData],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimezoneTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimezoneTypeTest.php
index fa02456f72a4..672dd1dc0fed 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimezoneTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimezoneTypeTest.php
@@ -36,9 +36,9 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitNullUsesDefaultEmptyData($emptyData = 'Africa/Kinshasa', $expectedData = 'Africa/Kinshasa')
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         $this->assertSame($emptyData, $form->getViewData());
@@ -48,7 +48,7 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = 'Africa/Kinshasa
 
     public function testDateTimeZoneInput()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, new \DateTimeZone('America/New_York'), array('input' => 'datetimezone'));
+        $form = $this->factory->create(static::TESTED_TYPE, new \DateTimeZone('America/New_York'), ['input' => 'datetimezone']);
 
         $this->assertSame('America/New_York', $form->createView()->vars['value']);
 
@@ -56,18 +56,18 @@ public function testDateTimeZoneInput()
 
         $this->assertEquals(new \DateTimeZone('Europe/Amsterdam'), $form->getData());
 
-        $form = $this->factory->create(static::TESTED_TYPE, array(new \DateTimeZone('America/New_York')), array('input' => 'datetimezone', 'multiple' => true));
+        $form = $this->factory->create(static::TESTED_TYPE, [new \DateTimeZone('America/New_York')], ['input' => 'datetimezone', 'multiple' => true]);
 
-        $this->assertSame(array('America/New_York'), $form->createView()->vars['value']);
+        $this->assertSame(['America/New_York'], $form->createView()->vars['value']);
 
-        $form->submit(array('Europe/Amsterdam', 'Europe/Paris'));
+        $form->submit(['Europe/Amsterdam', 'Europe/Paris']);
 
-        $this->assertEquals(array(new \DateTimeZone('Europe/Amsterdam'), new \DateTimeZone('Europe/Paris')), $form->getData());
+        $this->assertEquals([new \DateTimeZone('Europe/Amsterdam'), new \DateTimeZone('Europe/Paris')], $form->getData());
     }
 
     public function testFilterByRegions()
     {
-        $choices = $this->factory->create(static::TESTED_TYPE, null, array('regions' => \DateTimeZone::EUROPE))
+        $choices = $this->factory->create(static::TESTED_TYPE, null, ['regions' => \DateTimeZone::EUROPE])
             ->createView()->vars['choices'];
 
         $this->assertContains(new ChoiceView('Europe/Amsterdam', 'Europe/Amsterdam', 'Amsterdam'), $choices, '', false, false);
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/UrlTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/UrlTypeTest.php
index c80a8b7cfb2e..a5608557dd1d 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/UrlTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/UrlTypeTest.php
@@ -27,9 +27,9 @@ public function testSubmitAddsDefaultProtocolIfNoneIsIncluded()
 
     public function testSubmitAddsNoDefaultProtocolIfAlreadyIncluded()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'default_protocol' => 'http',
-        ));
+        ]);
 
         $form->submit('ftp://www.domain.com');
 
@@ -39,9 +39,9 @@ public function testSubmitAddsNoDefaultProtocolIfAlreadyIncluded()
 
     public function testSubmitAddsNoDefaultProtocolIfEmpty()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'default_protocol' => 'http',
-        ));
+        ]);
 
         $form->submit('');
 
@@ -51,9 +51,9 @@ public function testSubmitAddsNoDefaultProtocolIfEmpty()
 
     public function testSubmitAddsNoDefaultProtocolIfNull()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'default_protocol' => 'http',
-        ));
+        ]);
 
         $form->submit(null);
 
@@ -63,9 +63,9 @@ public function testSubmitAddsNoDefaultProtocolIfNull()
 
     public function testSubmitAddsNoDefaultProtocolIfSetToNull()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'default_protocol' => null,
-        ));
+        ]);
 
         $form->submit('www.domain.com');
 
@@ -78,16 +78,16 @@ public function testSubmitAddsNoDefaultProtocolIfSetToNull()
      */
     public function testThrowExceptionIfDefaultProtocolIsInvalid()
     {
-        $this->factory->create(static::TESTED_TYPE, null, array(
-            'default_protocol' => array(),
-        ));
+        $this->factory->create(static::TESTED_TYPE, null, [
+            'default_protocol' => [],
+        ]);
     }
 
     public function testSubmitNullUsesDefaultEmptyData($emptyData = 'empty', $expectedData = 'http://empty')
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'empty_data' => $emptyData,
-        ));
+        ]);
         $form->submit(null);
 
         // listener normalizes data on submit
diff --git a/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
index e9d9947774bc..33783d6a043a 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
@@ -43,7 +43,7 @@ protected function tearDown()
 
     protected function getBuilder($name = 'name')
     {
-        return new FormBuilder($name, null, $this->dispatcher, $this->factory, array('compound' => true));
+        return new FormBuilder($name, null, $this->dispatcher, $this->factory, ['compound' => true]);
     }
 
     protected function getForm($name = 'name')
@@ -88,7 +88,7 @@ public function testMaxPostSizeExceeded()
             ->willReturn(true)
         ;
 
-        $event = new FormEvent($this->form, array('csrf' => 'token'));
+        $event = new FormEvent($this->form, ['csrf' => 'token']);
         $validation = new CsrfValidationListener('csrf', $this->tokenManager, 'unknown', 'Error message', null, null, $serverParams);
 
         $validation->preSubmit($event);
diff --git a/src/Symfony/Component/Form/Tests/Extension/Csrf/Type/FormTypeCsrfExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Csrf/Type/FormTypeCsrfExtensionTest.php
index 599a14a3e665..083f1c956792 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Csrf/Type/FormTypeCsrfExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Csrf/Type/FormTypeCsrfExtensionTest.php
@@ -58,18 +58,18 @@ protected function tearDown()
 
     protected function getExtensions()
     {
-        return array_merge(parent::getExtensions(), array(
+        return array_merge(parent::getExtensions(), [
             new CsrfExtension($this->tokenManager, $this->translator),
-        ));
+        ]);
     }
 
     public function testCsrfProtectionByDefaultIfRootAndCompound()
     {
         $view = $this->factory
-            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'compound' => true,
-            ))
+            ])
             ->createView();
 
         $this->assertArrayHasKey('csrf', $view);
@@ -80,10 +80,10 @@ public function testNoCsrfProtectionByDefaultIfCompoundButNotRoot()
         $view = $this->factory
             ->createNamedBuilder('root', 'Symfony\Component\Form\Extension\Core\Type\FormType')
             ->add($this->factory
-                ->createNamedBuilder('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+                ->createNamedBuilder('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                     'csrf_field_name' => 'csrf',
                     'compound' => true,
-                ))
+                ])
             )
             ->getForm()
             ->get('form')
@@ -95,10 +95,10 @@ public function testNoCsrfProtectionByDefaultIfCompoundButNotRoot()
     public function testNoCsrfProtectionByDefaultIfRootButNotCompound()
     {
         $view = $this->factory
-            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'compound' => false,
-            ))
+            ])
             ->createView();
 
         $this->assertArrayNotHasKey('csrf', $view);
@@ -107,11 +107,11 @@ public function testNoCsrfProtectionByDefaultIfRootButNotCompound()
     public function testCsrfProtectionCanBeDisabled()
     {
         $view = $this->factory
-            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_protection' => false,
                 'compound' => true,
-            ))
+            ])
             ->createView();
 
         $this->assertArrayNotHasKey('csrf', $view);
@@ -125,12 +125,12 @@ public function testGenerateCsrfToken()
             ->will($this->returnValue(new CsrfToken('TOKEN_ID', 'token')));
 
         $view = $this->factory
-            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'csrf_token_id' => 'TOKEN_ID',
                 'compound' => true,
-            ))
+            ])
             ->createView();
 
         $this->assertEquals('token', $view['csrf']->vars['value']);
@@ -144,11 +144,11 @@ public function testGenerateCsrfTokenUsesFormNameAsIntentionByDefault()
             ->will($this->returnValue('token'));
 
         $view = $this->factory
-            ->createNamed('FORM_NAME', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->createNamed('FORM_NAME', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'compound' => true,
-            ))
+            ])
             ->createView();
 
         $this->assertEquals('token', $view['csrf']->vars['value']);
@@ -162,11 +162,11 @@ public function testGenerateCsrfTokenUsesTypeClassAsIntentionIfEmptyFormName()
             ->will($this->returnValue('token'));
 
         $view = $this->factory
-            ->createNamed('', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->createNamed('', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'compound' => true,
-            ))
+            ])
             ->createView();
 
         $this->assertEquals('token', $view['csrf']->vars['value']);
@@ -174,10 +174,10 @@ public function testGenerateCsrfTokenUsesTypeClassAsIntentionIfEmptyFormName()
 
     public function provideBoolean()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     /**
@@ -191,22 +191,22 @@ public function testValidateTokenOnSubmitIfRootAndCompound($valid)
             ->will($this->returnValue($valid));
 
         $form = $this->factory
-            ->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'csrf_token_id' => 'TOKEN_ID',
                 'compound' => true,
-            ))
+            ])
             ->add('child', 'Symfony\Component\Form\Extension\Core\Type\TextType')
             ->getForm();
 
-        $form->submit(array(
+        $form->submit([
             'child' => 'foobar',
             'csrf' => 'token',
-        ));
+        ]);
 
         // Remove token from data
-        $this->assertSame(array('child' => 'foobar'), $form->getData());
+        $this->assertSame(['child' => 'foobar'], $form->getData());
 
         // Validate accordingly
         $this->assertSame($valid, $form->isValid());
@@ -223,21 +223,21 @@ public function testValidateTokenOnSubmitIfRootAndCompoundUsesFormNameAsIntentio
             ->will($this->returnValue($valid));
 
         $form = $this->factory
-            ->createNamedBuilder('FORM_NAME', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->createNamedBuilder('FORM_NAME', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'compound' => true,
-            ))
+            ])
             ->add('child', 'Symfony\Component\Form\Extension\Core\Type\TextType')
             ->getForm();
 
-        $form->submit(array(
+        $form->submit([
             'child' => 'foobar',
             'csrf' => 'token',
-        ));
+        ]);
 
         // Remove token from data
-        $this->assertSame(array('child' => 'foobar'), $form->getData());
+        $this->assertSame(['child' => 'foobar'], $form->getData());
 
         // Validate accordingly
         $this->assertSame($valid, $form->isValid());
@@ -254,21 +254,21 @@ public function testValidateTokenOnSubmitIfRootAndCompoundUsesTypeClassAsIntenti
             ->will($this->returnValue($valid));
 
         $form = $this->factory
-            ->createNamedBuilder('', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->createNamedBuilder('', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'compound' => true,
-            ))
+            ])
             ->add('child', 'Symfony\Component\Form\Extension\Core\Type\TextType')
             ->getForm();
 
-        $form->submit(array(
+        $form->submit([
             'child' => 'foobar',
             'csrf' => 'token',
-        ));
+        ]);
 
         // Remove token from data
-        $this->assertSame(array('child' => 'foobar'), $form->getData());
+        $this->assertSame(['child' => 'foobar'], $form->getData());
 
         // Validate accordingly
         $this->assertSame($valid, $form->isValid());
@@ -280,22 +280,22 @@ public function testFailIfRootAndCompoundAndTokenMissing()
             ->method('isTokenValid');
 
         $form = $this->factory
-            ->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'csrf_token_id' => 'TOKEN_ID',
                 'compound' => true,
-            ))
+            ])
             ->add('child', 'Symfony\Component\Form\Extension\Core\Type\TextType')
             ->getForm();
 
-        $form->submit(array(
+        $form->submit([
             'child' => 'foobar',
             // token is missing
-        ));
+        ]);
 
         // Remove token from data
-        $this->assertSame(array('child' => 'foobar'), $form->getData());
+        $this->assertSame(['child' => 'foobar'], $form->getData());
 
         // Validate accordingly
         $this->assertFalse($form->isValid());
@@ -309,20 +309,20 @@ public function testDontValidateTokenIfCompoundButNoRoot()
         $form = $this->factory
             ->createNamedBuilder('root', 'Symfony\Component\Form\Extension\Core\Type\FormType')
             ->add($this->factory
-                ->createNamedBuilder('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+                ->createNamedBuilder('form', 'Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                     'csrf_field_name' => 'csrf',
                     'csrf_token_manager' => $this->tokenManager,
                     'csrf_token_id' => 'TOKEN_ID',
                     'compound' => true,
-                ))
+                ])
             )
             ->getForm()
             ->get('form');
 
-        $form->submit(array(
+        $form->submit([
             'child' => 'foobar',
             'csrf' => 'token',
-        ));
+        ]);
     }
 
     public function testDontValidateTokenIfRootButNotCompound()
@@ -331,29 +331,29 @@ public function testDontValidateTokenIfRootButNotCompound()
             ->method('isTokenValid');
 
         $form = $this->factory
-            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'csrf_token_id' => 'TOKEN_ID',
                 'compound' => false,
-            ));
+            ]);
 
-        $form->submit(array(
+        $form->submit([
             'csrf' => 'token',
-        ));
+        ]);
     }
 
     public function testNoCsrfProtectionOnPrototype()
     {
         $prototypeView = $this->factory
-            ->create('Symfony\Component\Form\Extension\Core\Type\CollectionType', null, array(
+            ->create('Symfony\Component\Form\Extension\Core\Type\CollectionType', null, [
                 'entry_type' => __CLASS__.'_ChildType',
-                'entry_options' => array(
+                'entry_options' => [
                     'csrf_field_name' => 'csrf',
-                ),
+                ],
                 'prototype' => true,
                 'allow_add' => true,
-            ))
+            ])
             ->createView()
             ->vars['prototype'];
 
@@ -374,18 +374,18 @@ public function testsTranslateCustomErrorMessage()
              ->will($this->returnValue('[trans]Foobar[/trans]'));
 
         $form = $this->factory
-            ->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+            ->createBuilder('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
                 'csrf_field_name' => 'csrf',
                 'csrf_token_manager' => $this->tokenManager,
                 'csrf_message' => 'Foobar',
                 'csrf_token_id' => 'TOKEN_ID',
                 'compound' => true,
-            ))
+            ])
             ->getForm();
 
-        $form->submit(array(
+        $form->submit([
             'csrf' => 'token',
-        ));
+        ]);
 
         $errors = $form->getErrors();
         $expected = new FormError('[trans]Foobar[/trans]');
diff --git a/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataCollectorTest.php b/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataCollectorTest.php
index 3bfef602531f..2ca0f95f3c6e 100644
--- a/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataCollectorTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataCollectorTest.php
@@ -84,62 +84,62 @@ public function testBuildPreliminaryFormTree()
         $this->dataExtractor->expects($this->at(0))
             ->method('extractConfiguration')
             ->with($this->form)
-            ->will($this->returnValue(array('config' => 'foo')));
+            ->will($this->returnValue(['config' => 'foo']));
         $this->dataExtractor->expects($this->at(1))
             ->method('extractConfiguration')
             ->with($this->childForm)
-            ->will($this->returnValue(array('config' => 'bar')));
+            ->will($this->returnValue(['config' => 'bar']));
 
         $this->dataExtractor->expects($this->at(2))
             ->method('extractDefaultData')
             ->with($this->form)
-            ->will($this->returnValue(array('default_data' => 'foo')));
+            ->will($this->returnValue(['default_data' => 'foo']));
         $this->dataExtractor->expects($this->at(3))
             ->method('extractDefaultData')
             ->with($this->childForm)
-            ->will($this->returnValue(array('default_data' => 'bar')));
+            ->will($this->returnValue(['default_data' => 'bar']));
 
         $this->dataExtractor->expects($this->at(4))
             ->method('extractSubmittedData')
             ->with($this->form)
-            ->will($this->returnValue(array('submitted_data' => 'foo')));
+            ->will($this->returnValue(['submitted_data' => 'foo']));
         $this->dataExtractor->expects($this->at(5))
             ->method('extractSubmittedData')
             ->with($this->childForm)
-            ->will($this->returnValue(array('submitted_data' => 'bar')));
+            ->will($this->returnValue(['submitted_data' => 'bar']));
 
         $this->dataCollector->collectConfiguration($this->form);
         $this->dataCollector->collectDefaultData($this->form);
         $this->dataCollector->collectSubmittedData($this->form);
         $this->dataCollector->buildPreliminaryFormTree($this->form);
 
-        $childFormData = array(
+        $childFormData = [
              'config' => 'bar',
              'default_data' => 'bar',
              'submitted_data' => 'bar',
-             'children' => array(),
-         );
+             'children' => [],
+         ];
 
-        $formData = array(
+        $formData = [
              'config' => 'foo',
              'default_data' => 'foo',
              'submitted_data' => 'foo',
              'has_children_error' => false,
-             'children' => array(
+             'children' => [
                  'child' => $childFormData,
-             ),
-         );
+             ],
+         ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
                 spl_object_hash($this->childForm) => $childFormData,
-            ),
+            ],
             'nb_errors' => 0,
-         ), $this->dataCollector->getData());
+         ], $this->dataCollector->getData());
     }
 
     public function testBuildMultiplePreliminaryFormTrees()
@@ -150,49 +150,49 @@ public function testBuildMultiplePreliminaryFormTrees()
         $this->dataExtractor->expects($this->at(0))
             ->method('extractConfiguration')
             ->with($form1)
-            ->will($this->returnValue(array('config' => 'foo')));
+            ->will($this->returnValue(['config' => 'foo']));
         $this->dataExtractor->expects($this->at(1))
             ->method('extractConfiguration')
             ->with($form2)
-            ->will($this->returnValue(array('config' => 'bar')));
+            ->will($this->returnValue(['config' => 'bar']));
 
         $this->dataCollector->collectConfiguration($form1);
         $this->dataCollector->collectConfiguration($form2);
         $this->dataCollector->buildPreliminaryFormTree($form1);
 
-        $form1Data = array(
+        $form1Data = [
             'config' => 'foo',
-            'children' => array(),
-        );
+            'children' => [],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'form1' => $form1Data,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($form1) => $form1Data,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
 
         $this->dataCollector->buildPreliminaryFormTree($form2);
 
-        $form2Data = array(
+        $form2Data = [
             'config' => 'bar',
-            'children' => array(),
-        );
+            'children' => [],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'form1' => $form1Data,
                 'form2' => $form2Data,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($form1) => $form1Data,
                 spl_object_hash($form2) => $form2Data,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
     }
 
     public function testBuildSamePreliminaryFormTreeMultipleTimes()
@@ -200,68 +200,68 @@ public function testBuildSamePreliminaryFormTreeMultipleTimes()
         $this->dataExtractor->expects($this->at(0))
             ->method('extractConfiguration')
             ->with($this->form)
-            ->will($this->returnValue(array('config' => 'foo')));
+            ->will($this->returnValue(['config' => 'foo']));
 
         $this->dataExtractor->expects($this->at(1))
             ->method('extractDefaultData')
             ->with($this->form)
-            ->will($this->returnValue(array('default_data' => 'foo')));
+            ->will($this->returnValue(['default_data' => 'foo']));
 
         $this->dataCollector->collectConfiguration($this->form);
         $this->dataCollector->buildPreliminaryFormTree($this->form);
 
-        $formData = array(
+        $formData = [
             'config' => 'foo',
-            'children' => array(),
-        );
+            'children' => [],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
 
         $this->dataCollector->collectDefaultData($this->form);
         $this->dataCollector->buildPreliminaryFormTree($this->form);
 
-        $formData = array(
+        $formData = [
             'config' => 'foo',
             'default_data' => 'foo',
-            'children' => array(),
-        );
+            'children' => [],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
     }
 
     public function testBuildPreliminaryFormTreeWithoutCollectingAnyData()
     {
         $this->dataCollector->buildPreliminaryFormTree($this->form);
 
-        $formData = array(
-            'children' => array(),
-        );
+        $formData = [
+            'children' => [],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
     }
 
     public function testBuildFinalFormTree()
@@ -272,39 +272,39 @@ public function testBuildFinalFormTree()
         $this->dataExtractor->expects($this->at(0))
             ->method('extractConfiguration')
             ->with($this->form)
-            ->will($this->returnValue(array('config' => 'foo')));
+            ->will($this->returnValue(['config' => 'foo']));
         $this->dataExtractor->expects($this->at(1))
             ->method('extractConfiguration')
             ->with($this->childForm)
-            ->will($this->returnValue(array('config' => 'bar')));
+            ->will($this->returnValue(['config' => 'bar']));
 
         $this->dataExtractor->expects($this->at(2))
             ->method('extractDefaultData')
             ->with($this->form)
-            ->will($this->returnValue(array('default_data' => 'foo')));
+            ->will($this->returnValue(['default_data' => 'foo']));
         $this->dataExtractor->expects($this->at(3))
             ->method('extractDefaultData')
             ->with($this->childForm)
-            ->will($this->returnValue(array('default_data' => 'bar')));
+            ->will($this->returnValue(['default_data' => 'bar']));
 
         $this->dataExtractor->expects($this->at(4))
             ->method('extractSubmittedData')
             ->with($this->form)
-            ->will($this->returnValue(array('submitted_data' => 'foo')));
+            ->will($this->returnValue(['submitted_data' => 'foo']));
         $this->dataExtractor->expects($this->at(5))
             ->method('extractSubmittedData')
             ->with($this->childForm)
-            ->will($this->returnValue(array('submitted_data' => 'bar')));
+            ->will($this->returnValue(['submitted_data' => 'bar']));
 
         $this->dataExtractor->expects($this->at(6))
             ->method('extractViewVariables')
             ->with($this->view)
-            ->will($this->returnValue(array('view_vars' => 'foo')));
+            ->will($this->returnValue(['view_vars' => 'foo']));
 
         $this->dataExtractor->expects($this->at(7))
             ->method('extractViewVariables')
             ->with($this->childView)
-            ->will($this->returnValue(array('view_vars' => 'bar')));
+            ->will($this->returnValue(['view_vars' => 'bar']));
 
         $this->dataCollector->collectConfiguration($this->form);
         $this->dataCollector->collectDefaultData($this->form);
@@ -312,35 +312,35 @@ public function testBuildFinalFormTree()
         $this->dataCollector->collectViewVariables($this->view);
         $this->dataCollector->buildFinalFormTree($this->form, $this->view);
 
-        $childFormData = array(
+        $childFormData = [
             'view_vars' => 'bar',
             'config' => 'bar',
             'default_data' => 'bar',
             'submitted_data' => 'bar',
-            'children' => array(),
-        );
+            'children' => [],
+        ];
 
-        $formData = array(
+        $formData = [
             'view_vars' => 'foo',
             'config' => 'foo',
             'default_data' => 'foo',
             'submitted_data' => 'foo',
             'has_children_error' => false,
-            'children' => array(
+            'children' => [
                 'child' => $childFormData,
-            ),
-        );
+            ],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
                 spl_object_hash($this->childForm) => $childFormData,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
     }
 
     public function testSerializeWithFormAddedMultipleTimes()
@@ -365,76 +365,76 @@ public function testSerializeWithFormAddedMultipleTimes()
         $this->dataExtractor->expects($this->at(0))
             ->method('extractConfiguration')
             ->with($form1)
-            ->will($this->returnValue(array('config' => 'foo')));
+            ->will($this->returnValue(['config' => 'foo']));
         $this->dataExtractor->expects($this->at(1))
             ->method('extractConfiguration')
             ->with($child1)
-            ->will($this->returnValue(array('config' => 'bar')));
+            ->will($this->returnValue(['config' => 'bar']));
 
         $this->dataExtractor->expects($this->at(2))
             ->method('extractDefaultData')
             ->with($form1)
-            ->will($this->returnValue(array('default_data' => 'foo')));
+            ->will($this->returnValue(['default_data' => 'foo']));
         $this->dataExtractor->expects($this->at(3))
             ->method('extractDefaultData')
             ->with($child1)
-            ->will($this->returnValue(array('default_data' => 'bar')));
+            ->will($this->returnValue(['default_data' => 'bar']));
 
         $this->dataExtractor->expects($this->at(4))
             ->method('extractSubmittedData')
             ->with($form1)
-            ->will($this->returnValue(array('submitted_data' => 'foo')));
+            ->will($this->returnValue(['submitted_data' => 'foo']));
         $this->dataExtractor->expects($this->at(5))
             ->method('extractSubmittedData')
             ->with($child1)
-            ->will($this->returnValue(array('submitted_data' => 'bar')));
+            ->will($this->returnValue(['submitted_data' => 'bar']));
 
         $this->dataExtractor->expects($this->at(6))
             ->method('extractViewVariables')
             ->with($form1View)
-            ->will($this->returnValue(array('view_vars' => 'foo')));
+            ->will($this->returnValue(['view_vars' => 'foo']));
 
         $this->dataExtractor->expects($this->at(7))
             ->method('extractViewVariables')
             ->with($child1View)
-            ->will($this->returnValue(array('view_vars' => $child1View->vars)));
+            ->will($this->returnValue(['view_vars' => $child1View->vars]));
 
         $this->dataExtractor->expects($this->at(8))
             ->method('extractConfiguration')
             ->with($form2)
-            ->will($this->returnValue(array('config' => 'foo')));
+            ->will($this->returnValue(['config' => 'foo']));
         $this->dataExtractor->expects($this->at(9))
             ->method('extractConfiguration')
             ->with($child1)
-            ->will($this->returnValue(array('config' => 'bar')));
+            ->will($this->returnValue(['config' => 'bar']));
 
         $this->dataExtractor->expects($this->at(10))
             ->method('extractDefaultData')
             ->with($form2)
-            ->will($this->returnValue(array('default_data' => 'foo')));
+            ->will($this->returnValue(['default_data' => 'foo']));
         $this->dataExtractor->expects($this->at(11))
             ->method('extractDefaultData')
             ->with($child1)
-            ->will($this->returnValue(array('default_data' => 'bar')));
+            ->will($this->returnValue(['default_data' => 'bar']));
 
         $this->dataExtractor->expects($this->at(12))
             ->method('extractSubmittedData')
             ->with($form2)
-            ->will($this->returnValue(array('submitted_data' => 'foo')));
+            ->will($this->returnValue(['submitted_data' => 'foo']));
         $this->dataExtractor->expects($this->at(13))
             ->method('extractSubmittedData')
             ->with($child1)
-            ->will($this->returnValue(array('submitted_data' => 'bar')));
+            ->will($this->returnValue(['submitted_data' => 'bar']));
 
         $this->dataExtractor->expects($this->at(14))
             ->method('extractViewVariables')
             ->with($form2View)
-            ->will($this->returnValue(array('view_vars' => 'foo')));
+            ->will($this->returnValue(['view_vars' => 'foo']));
 
         $this->dataExtractor->expects($this->at(15))
             ->method('extractViewVariables')
             ->with($child1View)
-            ->will($this->returnValue(array('view_vars' => $child1View->vars)));
+            ->will($this->returnValue(['view_vars' => $child1View->vars]));
 
         $this->dataCollector->collectConfiguration($form1);
         $this->dataCollector->collectDefaultData($form1);
@@ -460,53 +460,53 @@ public function testFinalFormReliesOnFormViewStructure()
 
         $this->dataCollector->buildPreliminaryFormTree($this->form);
 
-        $child1Data = array(
-            'children' => array(),
-        );
+        $child1Data = [
+            'children' => [],
+        ];
 
-        $child2Data = array(
-            'children' => array(),
-        );
+        $child2Data = [
+            'children' => [],
+        ];
 
-        $formData = array(
-            'children' => array(
+        $formData = [
+            'children' => [
                 'first' => $child1Data,
                 'second' => $child2Data,
-            ),
-        );
+            ],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
                 spl_object_hash($child1) => $child1Data,
                 spl_object_hash($child2) => $child2Data,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
 
         $this->dataCollector->buildFinalFormTree($this->form, $this->view);
 
-        $formData = array(
-            'children' => array(
+        $formData = [
+            'children' => [
                 // "first" not present in FormView
                 'second' => $child2Data,
-            ),
-        );
+            ],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
                 spl_object_hash($child1) => $child1Data,
                 spl_object_hash($child2) => $child2Data,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
     }
 
     public function testChildViewsCanBeWithoutCorrespondingChildForms()
@@ -518,11 +518,11 @@ public function testChildViewsCanBeWithoutCorrespondingChildForms()
         $this->dataExtractor->expects($this->at(0))
             ->method('extractConfiguration')
             ->with($this->form)
-            ->will($this->returnValue(array('config' => 'foo')));
+            ->will($this->returnValue(['config' => 'foo']));
         $this->dataExtractor->expects($this->at(1))
             ->method('extractConfiguration')
             ->with($this->childForm)
-            ->will($this->returnValue(array('config' => 'bar')));
+            ->will($this->returnValue(['config' => 'bar']));
 
         // explicitly call collectConfiguration(), since $this->childForm is not
         // contained in the form tree
@@ -530,28 +530,28 @@ public function testChildVie
10000
wsCanBeWithoutCorrespondingChildForms()
         $this->dataCollector->collectConfiguration($this->childForm);
         $this->dataCollector->buildFinalFormTree($this->form, $this->view);
 
-        $childFormData = array(
+        $childFormData = [
             // no "config" key
-            'children' => array(),
-        );
+            'children' => [],
+        ];
 
-        $formData = array(
+        $formData = [
             'config' => 'foo',
-            'children' => array(
+            'children' => [
                 'child' => $childFormData,
-            ),
-        );
+            ],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
                 // no child entry
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
     }
 
     public function testChildViewsWithoutCorrespondingChildFormsMayBeExplicitlyAssociated()
@@ -566,11 +566,11 @@ public function testChildViewsWithoutCorrespondingChildFormsMayBeExplicitlyAssoc
         $this->dataExtractor->expects($this->at(0))
             ->method('extractConfiguration')
             ->with($this->form)
-            ->will($this->returnValue(array('config' => 'foo')));
+            ->will($this->returnValue(['config' => 'foo']));
         $this->dataExtractor->expects($this->at(1))
             ->method('extractConfiguration')
             ->with($this->childForm)
-            ->will($this->returnValue(array('config' => 'bar')));
+            ->will($this->returnValue(['config' => 'bar']));
 
         // explicitly call collectConfiguration(), since $this->childForm is not
         // contained in the form tree
@@ -578,28 +578,28 @@ public function testChildViewsWithoutCorrespondingChildFormsMayBeExplicitlyAssoc
         $this->dataCollector->collectConfiguration($this->childForm);
         $this->dataCollector->buildFinalFormTree($this->form, $this->view);
 
-        $childFormData = array(
+        $childFormData = [
             'config' => 'bar',
-            'children' => array(),
-        );
+            'children' => [],
+        ];
 
-        $formData = array(
+        $formData = [
             'config' => 'foo',
-            'children' => array(
+            'children' => [
                 'child' => $childFormData,
-            ),
-        );
+            ],
+        ];
 
-        $this->assertSame(array(
-            'forms' => array(
+        $this->assertSame([
+            'forms' => [
                 'name' => $formData,
-            ),
-            'forms_by_hash' => array(
+            ],
+            'forms_by_hash' => [
                 spl_object_hash($this->form) => $formData,
                 spl_object_hash($this->childForm) => $childFormData,
-            ),
+            ],
             'nb_errors' => 0,
-        ), $this->dataCollector->getData());
+        ], $this->dataCollector->getData());
     }
 
     public function testCollectSubmittedDataCountsErrors()
@@ -611,22 +611,22 @@ public function testCollectSubmittedDataCountsErrors()
         $form1->add($childForm1);
         $this->dataExtractor
              ->method('extractConfiguration')
-             ->will($this->returnValue(array()));
+             ->will($this->returnValue([]));
         $this->dataExtractor
              ->method('extractDefaultData')
-             ->will($this->returnValue(array()));
+             ->will($this->returnValue([]));
         $this->dataExtractor->expects($this->at(4))
             ->method('extractSubmittedData')
             ->with($form1)
-            ->will($this->returnValue(array('errors' => array('foo'))));
+            ->will($this->returnValue(['errors' => ['foo']]));
         $this->dataExtractor->expects($this->at(5))
             ->method('extractSubmittedData')
             ->with($childForm1)
-            ->will($this->returnValue(array('errors' => array('bar', 'bam'))));
+            ->will($this->returnValue(['errors' => ['bar', 'bam']]));
         $this->dataExtractor->expects($this->at(8))
             ->method('extractSubmittedData')
             ->with($form2)
-            ->will($this->returnValue(array('errors' => array('baz'))));
+            ->will($this->returnValue(['errors' => ['baz']]));
 
         $this->dataCollector->collectSubmittedData($form1);
 
@@ -653,30 +653,30 @@ public function testCollectSubmittedDataExpandedFormsErrors()
 
         $this->dataExtractor
             ->method('extractConfiguration')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
         $this->dataExtractor
             ->method('extractDefaultData')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
         $this->dataExtractor->expects($this->at(10))
             ->method('extractSubmittedData')
             ->with($this->form)
-            ->will($this->returnValue(array('errors' => array())));
+            ->will($this->returnValue(['errors' => []]));
         $this->dataExtractor->expects($this->at(11))
             ->method('extractSubmittedData')
             ->with($child1Form)
-            ->will($this->returnValue(array('errors' => array())));
+            ->will($this->returnValue(['errors' => []]));
         $this->dataExtractor->expects($this->at(12))
             ->method('extractSubmittedData')
             ->with($child11Form)
-            ->will($this->returnValue(array('errors' => array('foo'))));
+            ->will($this->returnValue(['errors' => ['foo']]));
         $this->dataExtractor->expects($this->at(13))
             ->method('extractSubmittedData')
             ->with($child2Form)
-            ->will($this->returnValue(array('errors' => array())));
+            ->will($this->returnValue(['errors' => []]));
         $this->dataExtractor->expects($this->at(14))
             ->method('extractSubmittedData')
             ->with($child21Form)
-            ->will($this->returnValue(array('errors' => array())));
+            ->will($this->returnValue(['errors' => []]));
 
         $this->dataCollector->collectSubmittedData($this->form);
         $this->dataCollector->buildPreliminaryFormTree($this->form);
@@ -701,14 +701,14 @@ public function testReset()
 
         $this->dataExtractor->expects($this->any())
             ->method('extractConfiguration')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
         $this->dataExtractor->expects($this->any())
             ->method('extractDefaultData')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
         $this->dataExtractor->expects($this->any())
             ->method('extractSubmittedData')
             ->with($form)
-            ->will($this->returnValue(array('errors' => array('baz'))));
+            ->will($this->returnValue(['errors' => ['baz']]));
 
         $this->dataCollector->buildPreliminaryFormTree($form);
         $this->dataCollector->collectSubmittedData($form);
@@ -716,11 +716,11 @@ public function testReset()
         $this->dataCollector->reset();
 
         $this->assertSame(
-            array(
-                'forms' => array(),
-                'forms_by_hash' => array(),
+            [
+                'forms' => [],
+                'forms_by_hash' => [],
                 'nb_errors' => 0,
-            ),
+            ],
             $this->dataCollector->getData()
         );
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataExtractorTest.php b/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataExtractorTest.php
index 50fdfd8aa985..9bbfb0f4f11e 100644
--- a/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataExtractorTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataExtractorTest.php
@@ -62,14 +62,14 @@ public function testExtractConfiguration()
             ->setType($type)
             ->getForm();
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'name',
             'name' => 'name',
             'type_class' => 'stdClass',
             'synchronized' => true,
-            'passed_options' => array(),
-            'resolved_options' => array(),
-        ), $this->dataExtractor->extractConfiguration($form));
+            'passed_options' => [],
+            'resolved_options' => [],
+        ], $this->dataExtractor->extractConfiguration($form));
     }
 
     public function testExtractConfigurationSortsPassedOptions()
@@ -79,11 +79,11 @@ public function testExtractConfigurationSortsPassedOptions()
             ->method('getInnerType')
             ->will($this->returnValue(new \stdClass()));
 
-        $options = array(
+        $options = [
             'b' => 'foo',
             'a' => 'bar',
             'c' => 'baz',
-        );
+        ];
 
         $form = $this->createBuilder('name')
             ->setType($type)
@@ -92,18 +92,18 @@ public function testExtractConfigurationSortsPassedOptions()
             ->setAttribute('data_collector/passed_options', $options)
             ->getForm();
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'name',
             'name' => 'name',
             'type_class' => 'stdClass',
             'synchronized' => true,
-            'passed_options' => array(
+            'passed_options' => [
                 'a' => 'bar',
                 'b' => 'foo',
                 'c' => 'baz',
-            ),
-            'resolved_options' => array(),
-        ), $this->dataExtractor->extractConfiguration($form));
+            ],
+            'resolved_options' => [],
+        ], $this->dataExtractor->extractConfiguration($form));
     }
 
     public function testExtractConfigurationSortsResolvedOptions()
@@ -113,28 +113,28 @@ public function testExtractConfigurationSortsResolvedOptions()
             ->method('getInnerType')
             ->will($this->returnValue(new \stdClass()));
 
-        $options = array(
+        $options = [
             'b' => 'foo',
             'a' => 'bar',
             'c' => 'baz',
-        );
+        ];
 
         $form = $this->createBuilder('name', $options)
             ->setType($type)
             ->getForm();
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'name',
             'name' => 'name',
             'type_class' => 'stdClass',
             'synchronized' => true,
-            'passed_options' => array(),
-            'resolved_options' => array(
+            'passed_options' => [],
+            'resolved_options' => [
                 'a' => 'bar',
                 'b' => 'foo',
                 'c' => 'baz',
-            ),
-        ), $this->dataExtractor->extractConfiguration($form));
+            ],
+        ], $this->dataExtractor->extractConfiguration($form));
     }
 
     public function testExtractConfigurationBuildsIdRecursively()
@@ -159,14 +159,14 @@ public function testExtractConfigurationBuildsIdRecursively()
         $grandParent->add($parent);
         $parent->add($form);
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'grandParent_parent_name',
             'name' => 'name',
             'type_class' => 'stdClass',
             'synchronized' => true,
-            'passed_options' => array(),
-            'resolved_options' => array(),
-        ), $this->dataExtractor->extractConfiguration($form));
+            'passed_options' => [],
+            'resolved_options' => [],
+        ], $this->dataExtractor->extractConfiguration($form));
     }
 
     public function testExtractDefaultData()
@@ -175,50 +175,50 @@ public function testExtractDefaultData()
 
         $form->setData('Foobar');
 
-        $this->assertSame(array(
-            'default_data' => array(
+        $this->assertSame([
+            'default_data' => [
                 'norm' => 'Foobar',
-            ),
-            'submitted_data' => array(),
-        ), $this->dataExtractor->extractDefaultData($form));
+            ],
+            'submitted_data' => [],
+        ], $this->dataExtractor->extractDefaultData($form));
     }
 
     public function testExtractDefaultDataStoresModelDataIfDifferent()
     {
         $form = $this->createBuilder('name')
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
                 'Foo' => 'Bar',
-            )))
+            ]))
             ->getForm();
 
         $form->setData('Foo');
 
-        $this->assertSame(array(
-            'default_data' => array(
+        $this->assertSame([
+            'default_data' => [
                 'norm' => 'Bar',
                 'model' => 'Foo',
-            ),
-            'submitted_data' => array(),
-        ), $this->dataExtractor->extractDefaultData($form));
+            ],
+            'submitted_data' => [],
+        ], $this->dataExtractor->extractDefaultData($form));
     }
 
     public function testExtractDefaultDataStoresViewDataIfDifferent()
     {
         $form = $this->createBuilder('name')
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 'Foo' => 'Bar',
-            )))
+            ]))
             ->getForm();
 
         $form->setData('Foo');
 
-        $this->assertSame(array(
-            'default_data' => array(
+        $this->assertSame([
+            'default_data' => [
                 'norm' => 'Foo',
                 'view' => 'Bar',
-            ),
-            'submitted_data' => array(),
-        ), $this->dataExtractor->extractDefaultData($form));
+            ],
+            'submitted_data' => [],
+        ], $this->dataExtractor->extractDefaultData($form));
     }
 
     public function testExtractSubmittedData()
@@ -227,55 +227,55 @@ public function testExtractSubmittedData()
 
         $form->submit('Foobar');
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foobar',
-            ),
-            'errors' => array(),
+            ],
+            'errors' => [],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresModelDataIfDifferent()
     {
         $form = $this->createBuilder('name')
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
                 'Foo' => 'Bar',
                 '' => '',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('Bar');
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Bar',
                 'model' => 'Foo',
-            ),
-            'errors' => array(),
+            ],
+            'errors' => [],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresViewDataIfDifferent()
     {
         $form = $this->createBuilder('name')
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 'Foo' => 'Bar',
                 '' => '',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('Bar');
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foo',
                 'view' => 'Bar',
-            ),
-            'errors' => array(),
+            ],
+            'errors' => [],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresErrors()
@@ -285,15 +285,15 @@ public function testExtractSubmittedDataStoresErrors()
         $form->submit('Foobar');
         $form->addError(new FormError('Invalid!'));
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foobar',
-            ),
-            'errors' => array(
-                array('message' => 'Invalid!', 'origin' => spl_object_hash($form), 'trace' => array()),
-            ),
+            ],
+            'errors' => [
+                ['message' => 'Invalid!', 'origin' => spl_object_hash($form), 'trace' => []],
+            ],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresErrorOrigin()
@@ -306,15 +306,15 @@ public function testExtractSubmittedDataStoresErrorOrigin()
         $form->submit('Foobar');
         $form->addError($error);
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foobar',
-            ),
-            'errors' => array(
-                array('message' => 'Invalid!', 'origin' => spl_object_hash($form), 'trace' => array()),
-            ),
+            ],
+            'errors' => [
+                ['message' => 'Invalid!', 'origin' => spl_object_hash($form), 'trace' => []],
+            ],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresErrorCause()
@@ -322,10 +322,10 @@ public function testExtractSubmittedDataStoresErrorCause()
         $form = $this->createBuilder('name')->getForm();
 
         $exception = new \Exception();
-        $violation = new ConstraintViolation('Foo', 'Foo', array(), 'Root', 'property.path', 'Invalid!', null, null, null, $exception);
+        $violation = new ConstraintViolation('Foo', 'Foo', [], 'Root', 'property.path', 'Invalid!', null, null, null, $exception);
 
         $form->submit('Foobar');
-        $form->addError(new FormError('Invalid!', null, array(), null, $violation));
+        $form->addError(new FormError('Invalid!', null, [], null, $violation));
         $origin = spl_object_hash($form);
 
         $this->assertDumpMatchesFormat(<<<EODUMP
@@ -375,39 +375,39 @@ function () {
 
         $form->submit('Foobar');
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foobar',
                 'model' => null,
-            ),
-            'errors' => array(),
+            ],
+            'errors' => [],
             'synchronized' => false,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractViewVariables()
     {
         $view = new FormView();
 
-        $view->vars = array(
+        $view->vars = [
             'b' => 'foo',
             'a' => 'bar',
             'c' => 'baz',
             'id' => 'foo_bar',
             'name' => 'bar',
-        );
+        ];
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'foo_bar',
             'name' => 'bar',
-            'view_vars' => array(
+            'view_vars' => [
                 'a' => 'bar',
                 'b' => 'foo',
                 'c' => 'baz',
                 'id' => 'foo_bar',
                 'name' => 'bar',
-            ),
-        ), $this->dataExtractor->extractViewVariables($view));
+            ],
+        ], $this->dataExtractor->extractViewVariables($view));
     }
 
     /**
@@ -416,7 +416,7 @@ public function testExtractViewVariables()
      *
      * @return FormBuilder
      */
-    private function createBuilder($name, array $options = array())
+    private function createBuilder($name, array $options = [])
     {
         return new FormBuilder($name, null, $this->dispatcher, $this->factory, $options);
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/DataCollector/Type/DataCollectorTypeExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/DataCollector/Type/DataCollectorTypeExtensionTest.php
index de635f64a3f4..35f38fc53aa4 100644
--- a/src/Symfony/Component/Form/Tests/Extension/DataCollector/Type/DataCollectorTypeExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/DataCollector/Type/DataCollectorTypeExtensionTest.php
@@ -44,6 +44,6 @@ public function testBuildForm()
             ->method('addEventSubscriber')
             ->with($this->isInstanceOf('Symfony\Component\Form\Extension\DataCollector\EventListener\DataCollectorListener'));
 
-        $this->extension->buildForm($builder, array());
+        $this->extension->buildForm($builder, []);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
index 66a7bf07191d..b78bd67ae0f3 100644
--- a/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
@@ -28,18 +28,18 @@ public function testGetTypeExtensions()
         $typeExtension2 = $this->createFormTypeExtensionMock('test');
         $typeExtension3 = $this->createFormTypeExtensionMock('other');
 
-        $extensions = array(
-            'test' => new \ArrayIterator(array($typeExtension1, $typeExtension2)),
-            'other' => new \ArrayIterator(array($typeExtension3)),
-        );
+        $extensions = [
+            'test' => new \ArrayIterator([$typeExtension1, $typeExtension2]),
+            'other' => new \ArrayIterator([$typeExtension3]),
+        ];
 
-        $extension = new DependencyInjectionExtension($container, $extensions, array());
+        $extension = new DependencyInjectionExtension($container, $extensions, []);
 
         $this->assertTrue($extension->hasTypeExtensions('test'));
         $this->assertTrue($extension->hasTypeExtensions('other'));
         $this->assertFalse($extension->hasTypeExtensions('unknown'));
-        $this->assertSame(array($typeExtension1, $typeExtension2), $extension->getTypeExtensions('test'));
-        $this->assertSame(array($typeExtension3), $extension->getTypeExtensions('other'));
+        $this->assertSame([$typeExtension1, $typeExtension2], $extension->getTypeExtensions('test'));
+        $this->assertSame([$typeExtension3], $extension->getTypeExtensions('other'));
     }
 
     /**
@@ -50,11 +50,11 @@ public function testThrowExceptionForInvalidExtendedType()
         $container = $this->getMockBuilder('Psr\Container\ContainerInterface')->getMock();
         $container->expects($this->never())->method('get');
 
-        $extensions = array(
-            'test' => new \ArrayIterator(array($this->createFormTypeExtensionMock('unmatched'))),
-        );
+        $extensions = [
+            'test' => new \ArrayIterator([$this->createFormTypeExtensionMock('unmatched')]),
+        ];
 
-        $extension = new DependencyInjectionExtension($container, $extensions, array());
+        $extension = new DependencyInjectionExtension($container, $extensions, []);
 
         $extension->getTypeExtensions('test');
     }
@@ -67,11 +67,11 @@ public function testLegacyGetTypeExtensions()
     {
         $container = $this->createContainerMock();
 
-        $services = array(
+        $services = [
             'extension1' => $typeExtension1 = $this->createFormTypeExtensionMock('test'),
             'extension2' => $typeExtension2 = $this->createFormTypeExtensionMock('test'),
             'extension3' => $typeExtension3 = $this->createFormTypeExtensionMock('other'),
-        );
+        ];
 
         $container->expects($this->any())
             ->method('get')
@@ -83,11 +83,11 @@ public function testLegacyGetTypeExtensions()
                 throw new ServiceNotFoundException($id);
             });
 
-        $extension = new DependencyInjectionExtension($container, array(), array('test' => array('extension1', 'extension2'), 'other' => array('extension3')), array());
+        $extension = new DependencyInjectionExtension($container, [], ['test' => ['extension1', 'extension2'], 'other' => ['extension3']], []);
 
         $this->assertTrue($extension->hasTypeExtensions('test'));
         $this->assertFalse($extension->hasTypeExtensions('unknown'));
-        $this->assertSame(array($typeExtension1, $typeExtension2), $extension->getTypeExtensions('test'));
+        $this->assertSame([$typeExtension1, $typeExtension2], $extension->getTypeExtensions('test'));
     }
 
     /**
@@ -106,7 +106,7 @@ public function testLegacyThrowExceptionForInvalidExtendedType()
             ->with('extension')
             ->willReturn($formTypeExtension);
 
-        $extension = new DependencyInjectionExtension($container, array(), array('test' => array('extension')), array());
+        $extension = new DependencyInjectionExtension($container, [], ['test' => ['extension']], []);
 
         $extensions = $extension->getTypeExtensions('test');
 
@@ -117,7 +117,7 @@ public function testLegacyThrowExceptionForInvalidExtendedType()
     public function testGetTypeGuesser()
     {
         $container = $this->createContainerMock();
-        $extension = new DependencyInjectionExtension($container, array(), array($this->getMockBuilder(FormTypeGuesserInterface::class)->getMock()));
+        $extension = new DependencyInjectionExtension($container, [], [$this->getMockBuilder(FormTypeGuesserInterface::class)->getMock()]);
 
         $this->assertInstanceOf(FormTypeGuesserChain::class, $extension->getTypeGuesser());
     }
@@ -125,7 +125,7 @@ public function testGetTypeGuesser()
     public function testGetTypeGuesserReturnsNullWhenNoTypeGuessersHaveBeenConfigured()
     {
         $container = $this->createContainerMock();
-        $extension = new DependencyInjectionExtension($container, array(), array());
+        $extension = new DependencyInjectionExtension($container, [], []);
 
         $this->assertNull($extension->getTypeGuesser());
     }
@@ -141,7 +141,7 @@ public function testLegacyGetTypeGuesser()
             ->method('get')
             ->with('foo')
             ->willReturn($this->getMockBuilder(FormTypeGuesserInterface::class)->getMock());
-        $extension = new DependencyInjectionExtension($container, array(), array(), array('foo'));
+        $extension = new DependencyInjectionExtension($container, [], [], ['foo']);
 
         $this->assertInstanceOf(FormTypeGuesserChain::class, $extension->getTypeGuesser());
     }
@@ -152,7 +152,7 @@ public function testLegacyGetTypeGuesser()
     public function testLegacyGetTypeGuesserReturnsNullWhenNoTypeGuessersHaveBeenConfigured()
     {
         $container = $this->createContainerMock();
-        $extension = new DependencyInjectionExtension($container, array(), array(), array());
+        $extension = new DependencyInjectionExtension($container, [], [], []);
 
         $this->assertNull($extension->getTypeGuesser());
     }
@@ -160,7 +160,7 @@ public function testLegacyGetTypeGuesserReturnsNullWhenNoTypeGuessersHaveBeenCon
     private function createContainerMock()
     {
         return $this->getMockBuilder('Psr\Container\ContainerInterface')
-            ->setMethods(array('get', 'has'))
+            ->setMethods(['get', 'has'])
             ->getMock();
     }
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/HttpFoundation/HttpFoundationRequestHandlerTest.php b/src/Symfony/Component/Form/Tests/Extension/HttpFoundation/HttpFoundationRequestHandlerTest.php
index e694e405792c..f414a511b04c 100644
--- a/src/Symfony/Component/Form/Tests/Extension/HttpFoundation/HttpFoundationRequestHandlerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/HttpFoundation/HttpFoundationRequestHandlerTest.php
@@ -37,9 +37,9 @@ public function testRequestShouldBeInstanceOfRequest()
         $this->requestHandler->handleRequest($this->getMockForm('name', 'GET'), new \stdClass());
     }
 
-    protected function setRequestData($method, $data, $files = array())
+    protected function setRequestData($method, $data, $files = [])
     {
-        $this->request = Request::create('http://localhost', $method, $data, array(), $files);
+        $this->request = Request::create('http://localhost', $method, $data, [], $files);
     }
 
     protected function getRequestHandler()
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorPerformanceTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorPerformanceTest.php
index 9e957d55fe5c..64b49d7e9fb1 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorPerformanceTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorPerformanceTest.php
@@ -22,9 +22,9 @@ class FormValidatorPerformanceTest extends FormPerformanceTestCase
 {
     protected function getExtensions()
     {
-        return array(
+        return [
             new ValidatorExtension(Validation::createValidator()),
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
index 4003ccc01edd..399f2d70cafb 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
@@ -48,7 +48,7 @@ protected function setUp()
     {
         $this->dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
         $this->factory = $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock();
-        $this->serverParams = $this->getMockBuilder('Symfony\Component\Form\Extension\Validator\Util\ServerParams')->setMethods(array('getNormalizedIniPostMaxSize', 'getContentLength'))->getMock();
+        $this->serverParams = $this->getMockBuilder('Symfony\Component\Form\Extension\Validator\Util\ServerParams')->setMethods(['getNormalizedIniPostMaxSize', 'getContentLength'])->getMock();
 
         parent::setUp();
 
@@ -63,12 +63,12 @@ protected function createValidator()
     public function testValidate()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => array('group1', 'group2'));
+        $options = ['validation_groups' => ['group1', 'group2']];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -78,19 +78,19 @@ public function testValidate()
     public function testValidateConstraints()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $constraint1 = new NotNull(array('groups' => array('group1', 'group2')));
-        $constraint2 = new NotBlank(array('groups' => 'group2'));
+        $constraint1 = new NotNull(['groups' => ['group1', 'group2']]);
+        $constraint2 = new NotBlank(['groups' => 'group2']);
 
-        $options = array(
-            'validation_groups' => array('group1', 'group2'),
-            'constraints' => array($constraint1, $constraint2),
-        );
+        $options = [
+            'validation_groups' => ['group1', 'group2'],
+            'constraints' => [$constraint1, $constraint2],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
         // First default constraints
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         // Then custom constraints
         $this->expectValidateValueAt(1, 'data', $object, $constraint1, 'group1');
@@ -109,16 +109,16 @@ public function testValidateChildIfValidConstraint()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $options = array(
-            'validation_groups' => array('group1', 'group2'),
-            'constraints' => array(new Valid()),
-        );
+        $options = [
+            'validation_groups' => ['group1', 'group2'],
+            'constraints' => [new Valid()],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)->getForm();
         $parent->add($form);
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -133,7 +133,7 @@ public function testDontValidateIfParentWithoutValidConstraint()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $options = array('validation_groups' => array('group1', 'group2'));
+        $options = ['validation_groups' => ['group1', 'group2']];
         $form = $this->getBuilder('name', '\stdClass', $options)->getForm();
         $parent->add($form);
 
@@ -152,7 +152,7 @@ public function testMissingConstraintIndex()
         $form = new FormBuilder('name', '\stdClass', $this->dispatcher, $this->factory);
         $form = $form->setData($object)->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('Default'));
+        $this->expectValidateAt(0, 'data', $object, ['Default']);
 
         $this->validator->validate($form, new Form());
 
@@ -162,17 +162,17 @@ public function testMissingConstraintIndex()
     public function testValidateConstraintsOptionEvenIfNoValidConstraint()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $constraint1 = new NotNull(array('groups' => array('group1', 'group2')));
-        $constraint2 = new NotBlank(array('groups' => 'group2'));
+        $constraint1 = new NotNull(['groups' => ['group1', 'group2']]);
+        $constraint2 = new NotBlank(['groups' => 'group2']);
 
         $parent = $this->getBuilder('parent', null)
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $options = array(
-            'validation_groups' => array('group1', 'group2'),
-            'constraints' => array($constraint1, $constraint2),
-        );
+        $options = [
+            'validation_groups' => ['group1', 'group2'],
+            'constraints' => [$constraint1, $constraint2],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
@@ -190,9 +190,9 @@ public function testDontValidateIfNoValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $form = $this->getBuilder('name', '\stdClass', array(
-                'validation_groups' => array(),
-            ))
+        $form = $this->getBuilder('name', '\stdClass', [
+                'validation_groups' => [],
+            ])
             ->setData($object)
             ->getForm();
 
@@ -211,10 +211,10 @@ public function testDontValidateConstraintsIfNoValidationGroups()
         $constraint1 = $this->getMockBuilder('Symfony\Component\Validator\Constraint')->getMock();
         $constraint2 = $this->getMockBuilder('Symfony\Component\Validator\Constraint')->getMock();
 
-        $options = array(
-            'validation_groups' => array(),
-            'constraints' => array($constraint1, $constraint2),
-        );
+        $options = [
+            'validation_groups' => [],
+            'constraints' => [$constraint1, $constraint2],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
@@ -233,13 +233,13 @@ public function testDontValidateIfNotSynchronized()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $form = $this->getBuilder('name', '\stdClass', array(
+        $form = $this->getBuilder('name', '\stdClass', [
                 'invalid_message' => 'invalid_message_key',
                 // Invalid message parameters must be supported, because the
                 // invalid message can be a translation key
                 // see https://github.com/symfony/symfony/issues/5144
-                'invalid_message_parameters' => array('{{ foo }}' => 'bar'),
-            ))
+                'invalid_message_parameters' => ['{{ foo }}' => 'bar'],
+            ])
             ->setData($object)
             ->addViewTransformer(new CallbackTransformer(
                 function ($data) { return $data; },
@@ -267,14 +267,14 @@ public function testAddInvalidErrorEvenIfNoValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $form = $this->getBuilder('name', '\stdClass', array(
+        $form = $this->getBuilder('name', '\stdClass', [
                 'invalid_message' => 'invalid_message_key',
                 // Invalid message parameters must be supported, because the
                 // invalid message can be a translation key
                 // see https://github.com/symfony/symfony/issues/5144
-                'invalid_message_parameters' => array('{{ foo }}' => 'bar'),
-                'validation_groups' => array(),
-            ))
+                'invalid_message_parameters' => ['{{ foo }}' => 'bar'],
+                'validation_groups' => [],
+            ])
             ->setData($object)
             ->addViewTransformer(new CallbackTransformer(
                     function ($data) { return $data; },
@@ -304,11 +304,11 @@ public function testDontValidateConstraintsIfNotSynchronized()
         $constraint1 = $this->getMockBuilder('Symfony\Component\Validator\Constraint')->getMock();
         $constraint2 = $this->getMockBuilder('Symfony\Component\Validator\Constraint')->getMock();
 
-        $options = array(
+        $options = [
             'invalid_message' => 'invalid_message_key',
-            'validation_groups' => array('group1', 'group2'),
-            'constraints' => array($constraint1, $constraint2),
-        );
+            'validation_groups' => ['group1', 'group2'],
+            'constraints' => [$constraint1, $constraint2],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->addViewTransformer(new CallbackTransformer(
@@ -354,7 +354,7 @@ function () { throw new TransformationFailedException(); }
             ->getForm();
 
         // Launch transformer
-        $form->submit(array('child' => 'foo'));
+        $form->submit(['child' => 'foo']);
 
         $this->expectNoValidate();
 
@@ -366,13 +366,13 @@ function () { throw new TransformationFailedException(); }
     public function testHandleGroupSequenceValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => new GroupSequence(array('group1', 'group2')));
+        $options = ['validation_groups' => new GroupSequence(['group1', 'group2'])];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, new GroupSequence(array('group1', 'group2')));
-        $this->expectValidateAt(1, 'data', $object, new GroupSequence(array('group1', 'group2')));
+        $this->expectValidateAt(0, 'data', $object, new GroupSequence(['group1', 'group2']));
+        $this->expectValidateAt(1, 'data', $object, new GroupSequence(['group1', 'group2']));
 
         $this->validator->validate($form, new Form());
 
@@ -382,12 +382,12 @@ public function testHandleGroupSequenceValidationGroups()
     public function testHandleCallbackValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => array($this, 'getValidationGroups'));
+        $options = ['validation_groups' => [$this, 'getValidationGroups']];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -397,12 +397,12 @@ public function testHandleCallbackValidationGroups()
     public function testDontExecuteFunctionNames()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => 'header');
+        $options = ['validation_groups' => 'header'];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('header'));
+        $this->expectValidateAt(0, 'data', $object, ['header']);
 
         $this->validator->validate($form, new Form());
 
@@ -412,14 +412,14 @@ public function testDontExecuteFunctionNames()
     public function testHandleClosureValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => function (FormInterface $form) {
-            return array('group1', 'group2');
-        });
+        $options = ['validation_groups' => function (FormInterface $form) {
+            return ['group1', 'group2'];
+        }];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -434,19 +434,19 @@ public function testUseValidationGroupOfClickedButton()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $form = $this->getForm('name', '\stdClass', array(
+        $form = $this->getForm('name', '\stdClass', [
             'validation_groups' => 'form_group',
-            'constraints' => array(new Valid()),
-        ));
+            'constraints' => [new Valid()],
+        ]);
 
         $parent->add($form);
-        $parent->add($this->getSubmitButton('submit', array(
+        $parent->add($this->getSubmitButton('submit', [
             'validation_groups' => 'button_group',
-        )));
+        ]));
 
-        $parent->submit(array('name' => $object, 'submit' => ''));
+        $parent->submit(['name' => $object, 'submit' => '']);
 
-        $this->expectValidateAt(0, 'data', $object, array('button_group'));
+        $this->expectValidateAt(0, 'data', $object, ['button_group']);
 
         $this->validator->validate($form, new Form());
 
@@ -461,19 +461,19 @@ public function testDontUseValidationGroupOfUnclickedButton()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $form = $this->getForm('name', '\stdClass', array(
+        $form = $this->getForm('name', '\stdClass', [
             'validation_groups' => 'form_group',
-            'constraints' => array(new Valid()),
-        ));
+            'constraints' => [new Valid()],
+        ]);
 
         $parent->add($form);
-        $parent->add($this->getSubmitButton('submit', array(
+        $parent->add($this->getSubmitButton('submit', [
             'validation_groups' => 'button_group',
-        )));
+        ]));
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('form_group'));
+        $this->expectValidateAt(0, 'data', $object, ['form_group']);
 
         $this->validator->validate($form, new Form());
 
@@ -484,18 +484,18 @@ public function testUseInheritedValidationGroup()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $parentOptions = array('validation_groups' => 'group');
+        $parentOptions = ['validation_groups' => 'group'];
         $parent = $this->getBuilder('parent', null, $parentOptions)
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $formOptions = array('constraints' => array(new Valid()));
+        $formOptions = ['constraints' => [new Valid()]];
         $form = $this->getBuilder('name', '\stdClass', $formOptions)->getForm();
         $parent->add($form);
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('group'));
+        $this->expectValidateAt(0, 'data', $object, ['group']);
 
         $this->validator->validate($form, new Form());
 
@@ -506,18 +506,18 @@ public function testUseInheritedCallbackValidationGroup()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $parentOptions = array('validation_groups' => array($this, 'getValidationGroups'));
+        $parentOptions = ['validation_groups' => [$this, 'getValidationGroups']];
         $parent = $this->getBuilder('parent', null, $parentOptions)
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $formOptions = array('constraints' => array(new Valid()));
+        $formOptions = ['constraints' => [new Valid()]];
         $form = $this->getBuilder('name', '\stdClass', $formOptions)->getForm();
         $parent->add($form);
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -528,22 +528,22 @@ public function testUseInheritedClosureValidationGroup()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $parentOptions = array(
+        $parentOptions = [
             'validation_groups' => function (FormInterface $form) {
-                return array('group1', 'group2');
+                return ['group1', 'group2'];
             },
-        );
+        ];
         $parent = $this->getBuilder('parent', null, $parentOptions)
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $formOptions = array('constraints' => array(new Valid()));
+        $formOptions = ['constraints' => [new Valid()]];
         $form = $this->getBuilder('name', '\stdClass', $formOptions)->getForm();
         $parent->add($form);
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -557,7 +557,7 @@ public function testAppendPropertyPath()
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('Default'));
+        $this->expectValidateAt(0, 'data', $object, ['Default']);
 
         $this->validator->validate($form, new Form());
 
@@ -579,13 +579,13 @@ public function testDontWalkScalars()
 
     public function testViolationIfExtraData()
     {
-        $form = $this->getBuilder('parent', null, array('extra_fields_message' => 'Extra!'))
+        $form = $this->getBuilder('parent', null, ['extra_fields_message' => 'Extra!'])
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->add($this->getBuilder('child'))
             ->getForm();
 
-        $form->submit(array('foo' => 'bar'));
+        $form->submit(['foo' => 'bar']);
 
         $this->expectNoValidate();
 
@@ -593,20 +593,20 @@ public function testViolationIfExtraData()
 
         $this->buildViolation('Extra!')
             ->setParameter('{{ extra_fields }}', '"foo"')
-            ->setInvalidValue(array('foo' => 'bar'))
+            ->setInvalidValue(['foo' => 'bar'])
             ->setCode(Form::NO_SUCH_FIELD_ERROR)
             ->assertRaised();
     }
 
     public function testViolationFormatIfMultipleExtraFields()
     {
-        $form = $this->getBuilder('parent', null, array('extra_fields_message' => 'Extra!'))
+        $form = $this->getBuilder('parent', null, ['extra_fields_message' => 'Extra!'])
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->add($this->getBuilder('child'))
             ->getForm();
 
-        $form->submit(array('foo' => 'bar', 'baz' => 'qux', 'quux' => 'quuz'));
+        $form->submit(['foo' => 'bar', 'baz' => 'qux', 'quux' => 'quuz']);
 
         $this->expectNoValidate();
 
@@ -614,7 +614,7 @@ public function testViolationFormatIfMultipleExtraFields()
 
         $this->buildViolation('Extra!')
             ->setParameter('{{ extra_fields }}', '"foo", "baz", "quux"')
-            ->setInvalidValue(array('foo' => 'bar', 'baz' => 'qux', 'quux' => 'quuz'))
+            ->setInvalidValue(['foo' => 'bar', 'baz' => 'qux', 'quux' => 'quuz'])
             ->setCode(Form::NO_SUCH_FIELD_ERROR)
             ->assertRaised();
     }
@@ -624,13 +624,13 @@ public function testNoViolationIfAllowExtraData()
         $context = $this->getMockExecutionContext();
 
         $form = $this
-            ->getBuilder('parent', null, array('allow_extra_fields' => true))
+            ->getBuilder('parent', null, ['allow_extra_fields' => true])
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->add($this->getBuilder('child'))
             ->getForm();
 
-        $form->submit(array('foo' => 'bar'));
+        $form->submit(['foo' => 'bar']);
 
         $context->expects($this->never())
             ->method('addViolation');
@@ -646,7 +646,7 @@ public function testNoViolationIfAllowExtraData()
      */
     public function getValidationGroups(FormInterface $form)
     {
-        return array('group1', 'group2');
+        return ['group1', 'group2'];
     }
 
     private function getMockExecutionContext()
@@ -674,22 +674,22 @@ private function getMockExecutionContext()
      *
      * @return FormBuilder
      */
-    private function getBuilder($name = 'name', $dataClass = null, array $options = array())
+    private function getBuilder($name = 'name', $dataClass = null, array $options = [])
     {
-        $options = array_replace(array(
-            'constraints' => array(),
-            'invalid_message_parameters' => array(),
-        ), $options);
+        $options = array_replace([
+            'constraints' => [],
+            'invalid_message_parameters' => [],
+        ], $options);
 
         return new FormBuilder($name, $dataClass, $this->dispatcher, $this->factory, $options);
     }
 
-    private function getForm($name = 'name', $dataClass = null, array $options = array())
+    private function getForm($name = 'name', $dataClass = null, array $options = [])
     {
         return $this->getBuilder($name, $dataClass, $options)->getForm();
     }
 
-    private function getSubmitButton($name = 'name', array $options = array())
+    private function getSubmitButton($name = 'name', array $options = [])
     {
         $builder = new SubmitButtonBuilder($name, $options);
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/EventListener/ValidationListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/EventListener/ValidationListenerTest.php
index ae161819c7b5..5cda7eeaf733 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/EventListener/ValidationListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/EventListener/ValidationListenerTest.php
@@ -62,7 +62,7 @@ protected function setUp()
         $this->listener = new ValidationListener($this->validator, $this->violationMapper);
         $this->message = 'Message';
         $this->messageTemplate = 'Message template';
-        $this->params = array('foo' => 'bar');
+        $this->params = ['foo' => 'bar'];
     }
 
     private function getConstraintViolation($code = null)
@@ -74,7 +74,7 @@ private function getBuilder($name = 'name', $propertyPath = null, $dataClass = n
     {
         $builder = new FormBuilder($name, $dataClass, $this->dispatcher, $this->factory);
         $builder->setPropertyPath(new PropertyPath($propertyPath ?: $name));
-        $builder->setAttribute('error_mapping', array());
+        $builder->setAttribute('error_mapping', []);
         $builder->setErrorBubbling(false);
         $builder->setMapped(true);
 
@@ -99,7 +99,7 @@ public function testMapViolation()
 
         $this->validator->expects($this->once())
             ->method('validate')
-            ->will($this->returnValue(array($violation)));
+            ->will($this->returnValue([$violation]));
 
         $this->violationMapper->expects($this->once())
             ->method('mapViolation')
@@ -115,7 +115,7 @@ public function testMapViolationAllowsNonSyncIfInvalid()
 
         $this->validator->expects($this->once())
             ->method('validate')
-            ->will($this->returnValue(array($violation)));
+            ->will($this->returnValue([$violation]));
 
         $this->violationMapper->expects($this->once())
             ->method('mapViolation')
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/BaseValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/BaseValidatorExtensionTest.php
index e83aaaa3491d..b90098b41271 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/BaseValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/BaseValidatorExtensionTest.php
@@ -29,57 +29,57 @@ public function testValidationGroupNullByDefault()
 
     public function testValidationGroupsTransformedToArray()
     {
-        $form = $this->createForm(array(
+        $form = $this->createForm([
             'validation_groups' => 'group',
-        ));
+        ]);
 
-        $this->assertEquals(array('group'), $form->getConfig()->getOption('validation_groups'));
+        $this->assertEquals(['group'], $form->getConfig()->getOption('validation_groups'));
     }
 
     public function testValidationGroupsCanBeSetToArray()
     {
-        $form = $this->createForm(array(
-            'validation_groups' => array('group1', 'group2'),
-        ));
+        $form = $this->createForm([
+            'validation_groups' => ['group1', 'group2'],
+        ]);
 
-        $this->assertEquals(array('group1', 'group2'), $form->getConfig()->getOption('validation_groups'));
+        $this->assertEquals(['group1', 'group2'], $form->getConfig()->getOption('validation_groups'));
     }
 
     public function testValidationGroupsCanBeSetToFalse()
     {
-        $form = $this->createForm(array(
+        $form = $this->createForm([
             'validation_groups' => false,
-        ));
+        ]);
 
-        $this->assertEquals(array(), $form->getConfig()->getOption('validation_groups'));
+        $this->assertEquals([], $form->getConfig()->getOption('validation_groups'));
     }
 
     public function testValidationGroupsCanBeSetToCallback()
     {
-        $form = $this->createForm(array(
-            'validation_groups' => array($this, 'testValidationGroupsCanBeSetToCallback'),
-        ));
+        $form = $this->createForm([
+            'validation_groups' => [$this, 'testValidationGroupsCanBeSetToCallback'],
+        ]);
 
         $this->assertInternalType('callable', $form->getConfig()->getOption('validation_groups'));
     }
 
     public function testValidationGroupsCanBeSetToClosure()
     {
-        $form = $this->createForm(array(
+        $form = $this->createForm([
             'validation_groups' => function (FormInterface $form) { },
-        ));
+        ]);
 
         $this->assertInternalType('callable', $form->getConfig()->getOption('validation_groups'));
     }
 
     public function testValidationGroupsCanBeSetToGroupSequence()
     {
-        $form = $this->createForm(array(
-            'validation_groups' => new GroupSequence(array('group1', 'group2')),
-        ));
+        $form = $this->createForm([
+            'validation_groups' => new GroupSequence(['group1', 'group2']),
+        ]);
 
         $this->assertInstanceOf('Symfony\Component\Validator\Constraints\GroupSequence', $form->getConfig()->getOption('validation_groups'));
     }
 
-    abstract protected function createForm(array $options = array());
+    abstract protected function createForm(array $options = []);
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
index 449a133e4408..8437d6f0975e 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
@@ -33,9 +33,9 @@ public function testSubmitValidatesData()
         $builder = $this->factory->createBuilder(
             FormTypeTest::TESTED_TYPE,
             null,
-            array(
+            [
                 'validation_groups' => 'group',
-            )
+            ]
         );
         $builder->add('firstName', FormTypeTest::TESTED_TYPE);
         $form = $builder->getForm();
@@ -46,14 +46,14 @@ public function testSubmitValidatesData()
             ->will($this->returnValue(new ConstraintViolationList()));
 
         // specific data is irrelevant
-        $form->submit(array());
+        $form->submit([]);
     }
 
     public function testValidConstraint()
     {
-        $form = $this->createForm(array('constraints' => $valid = new Valid()));
+        $form = $this->createForm(['constraints' => $valid = new Valid()]);
 
-        $this->assertSame(array($valid), $form->getConfig()->getOption('constraints'));
+        $this->assertSame([$valid], $form->getConfig()->getOption('constraints'));
     }
 
     public function testValidatorInterface()
@@ -69,21 +69,21 @@ public function testGroupSequenceWithConstraintsOption()
         $form = Forms::createFormFactoryBuilder()
             ->addExtension(new ValidatorExtension(Validation::createValidator()))
             ->getFormFactory()
-            ->create(FormTypeTest::TESTED_TYPE, null, (array('validation_groups' => new GroupSequence(array('First', 'Second')))))
-            ->add('field', TextTypeTest::TESTED_TYPE, array(
-                'constraints' => array(
-                    new Length(array('min' => 10, 'groups' => array('First'))),
-                    new Email(array('groups' => array('Second'))),
-                ),
-            ))
+            ->create(FormTypeTest::TESTED_TYPE, null, (['validation_groups' => new GroupSequence(['First', 'Second'])]))
+            ->add('field', TextTypeTest::TESTED_TYPE, [
+                'constraints' => [
+                    new Length(['min' => 10, 'groups' => ['First']]),
+                    new Email(['groups' => ['Second']]),
+                ],
+            ])
         ;
 
-        $form->submit(array('field' => 'wrong'));
+        $form->submit(['field' => 'wrong']);
 
         $this->assertCount(1, $form->getErrors(true));
     }
 
-    protected function createForm(array $options = array())
+    protected function createForm(array $options = [])
     {
         return $this->factory->create(FormTypeTest::TESTED_TYPE, null, $options);
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/SubmitTypeValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/SubmitTypeValidatorExtensionTest.php
index 015b9582b576..c347c89bce3b 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/SubmitTypeValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/SubmitTypeValidatorExtensionTest.php
@@ -17,7 +17,7 @@ class SubmitTypeValidatorExtensionTest extends BaseValidatorExtensionTest
 {
     use ValidatorExtensionTrait;
 
-    protected function createForm(array $options = array())
+    protected function createForm(array $options = [])
     {
         return $this->factory->create('Symfony\Component\Form\Extension\Core\Type\SubmitType', null, $options);
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Util/ServerParamsTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Util/ServerParamsTest.php
index c3ee7303efa1..0803e18de9e8 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Util/ServerParamsTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Util/ServerParamsTest.php
@@ -31,8 +31,8 @@ public function testGetContentLengthFromSuperglobals()
 
     public function testGetContentLengthFromRequest()
     {
-        $request = Request::create('http://foo', 'GET', array(), array(), array(), array('CONTENT_LENGTH' => 1024));
-        $requestStack = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestStack')->setMethods(array('getCurrentRequest'))->getMock();
+        $request = Request::create('http://foo', 'GET', [], [], [], ['CONTENT_LENGTH' => 1024]);
+        $requestStack = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestStack')->setMethods(['getCurrentRequest'])->getMock();
         $requestStack->expects($this->once())->method('getCurrentRequest')->will($this->returnValue($request));
         $serverParams = new ServerParams($requestStack);
 
@@ -42,7 +42,7 @@ public function testGetContentLengthFromRequest()
     /** @dataProvider getGetPostMaxSizeTestData */
     public function testGetPostMaxSize($size, $bytes)
     {
-        $serverParams = $this->getMockBuilder('Symfony\Component\Form\Extension\Validator\Util\ServerParams')->setMethods(array('getNormalizedIniPostMaxSize'))->getMock();
+        $serverParams = $this->getMockBuilder('Symfony\Component\Form\Extension\Validator\Util\ServerParams')->setMethods(['getNormalizedIniPostMaxSize'])->getMock();
         $serverParams
             ->expects($this->any())
             ->method('getNormalizedIniPostMaxSize')
@@ -53,20 +53,20 @@ public function testGetPostMaxSize($size, $bytes)
 
     public function getGetPostMaxSizeTestData()
     {
-        return array(
-            array('2k', 2048),
-            array('2 k', 2048),
-            array('8m', 8 * 1024 * 1024),
-            array('+2 k', 2048),
-            array('+2???k', 2048),
-            array('0x10', 16),
-            array('0xf', 15),
-            array('010', 8),
-            array('+0x10 k', 16 * 1024),
-            array('1g', 1024 * 1024 * 1024),
-            array('-1', -1),
-            array('0', 0),
-            array('2mk', 2048), // the unit must be the last char, so in this case 'k', not 'm'
-        );
+        return [
+            ['2k', 2048],
+            ['2 k', 2048],
+            ['8m', 8 * 1024 * 1024],
+            ['+2 k', 2048],
+            ['+2???k', 2048],
+            ['0x10', 16],
+            ['0xf', 15],
+            ['010', 8],
+            ['+0x10 k', 16 * 1024],
+            ['1g', 1024 * 1024 * 1024],
+            ['-1', -1],
+            ['0', 0],
+            ['2mk', 2048], // the unit must be the last char, so in this case 'k', not 'm'
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorExtensionTest.php
index a2b4e2ef9fb6..ce18d0b6c571 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorExtensionTest.php
@@ -22,7 +22,7 @@ public function test2Dot5ValidationApi()
             ->disableOriginalConstructor()
             ->getMock();
         $metadata = $this->getMockBuilder('Symfony\Component\Validator\Mapping\ClassMetadata')
-            ->setMethods(array('addConstraint', 'addPropertyConstraint'))
+            ->setMethods(['addConstraint'
10000
, 'addPropertyConstraint'])
             ->disableOriginalConstructor()
             ->getMock();
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorTypeGuesserTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorTypeGuesserTest.php
index 1a743cdfe856..d14c89c2cbda 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorTypeGuesserTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/ValidatorTypeGuesserTest.php
@@ -62,13 +62,13 @@ protected function setUp()
 
     public function guessRequiredProvider()
     {
-        return array(
-            array(new NotNull(), new ValueGuess(true, Guess::HIGH_CONFIDENCE)),
-            array(new NotBlank(), new ValueGuess(true, Guess::HIGH_CONFIDENCE)),
-            array(new IsTrue(), new ValueGuess(true, Guess::HIGH_CONFIDENCE)),
-            array(new Length(10), new ValueGuess(false, Guess::LOW_CONFIDENCE)),
-            array(new Range(array('min' => 1, 'max' => 20)), new ValueGuess(false, Guess::LOW_CONFIDENCE)),
-        );
+        return [
+            [new NotNull(), new ValueGuess(true, Guess::HIGH_CONFIDENCE)],
+            [new NotBlank(), new ValueGuess(true, Guess::HIGH_CONFIDENCE)],
+            [new IsTrue(), new ValueGuess(true, Guess::HIGH_CONFIDENCE)],
+            [new Length(10), new ValueGuess(false, Guess::LOW_CONFIDENCE)],
+            [new Range(['min' => 1, 'max' => 20]), new ValueGuess(false, Guess::LOW_CONFIDENCE)],
+        ];
     }
 
     /**
@@ -92,7 +92,7 @@ public function testGuessRequiredReturnsFalseForUnmappedProperties()
 
     public function testGuessMaxLengthForConstraintWithMaxValue()
     {
-        $constraint = new Length(array('max' => '2'));
+        $constraint = new Length(['max' => '2']);
 
         $result = $this->guesser->guessMaxLengthForConstraint($constraint);
         $this->assertInstanceOf('Symfony\Component\Form\Guess\ValueGuess', $result);
@@ -102,7 +102,7 @@ public function testGuessMaxLengthForConstraintWithMaxValue()
 
     public function testGuessMaxLengthForConstraintWithMinValue()
     {
-        $constraint = new Length(array('min' => '2'));
+        $constraint = new Length(['min' => '2']);
 
         $result = $this->guesser->guessMaxLengthForConstraint($constraint);
         $this->assertNull($result);
@@ -110,12 +110,12 @@ public function testGuessMaxLengthForConstraintWithMinValue()
 
     public function maxLengthTypeProvider()
     {
-        return array(
-            array('double'),
-            array('float'),
-            array('numeric'),
-            array('real'),
-        );
+        return [
+            ['double'],
+            ['float'],
+            ['numeric'],
+            ['real'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationMapperTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationMapperTest.php
index 66e2dafff8d5..1278a86e22c2 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationMapperTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationMapperTest.php
@@ -64,14 +64,14 @@ protected function setUp()
         $this->mapper = new ViolationMapper();
         $this->message = 'Message';
         $this->messageTemplate = 'Message template';
-        $this->params = array('foo' => 'bar');
+        $this->params = ['foo' => 'bar'];
     }
 
-    protected function getForm($name = 'name', $propertyPath = null, $dataClass = null, $errorMapping = array(), $inheritData = false, $synchronized = true)
+    protected function getForm($name = 'name', $propertyPath = null, $dataClass = null, $errorMapping = [], $inheritData = false, $synchronized = true)
     {
-        $config = new FormConfigBuilder($name, $dataClass, $this->dispatcher, array(
+        $config = new FormConfigBuilder($name, $dataClass, $this->dispatcher, [
             'error_mapping' => $errorMapping,
-        ));
+        ]);
         $config->setMapped(true);
         $config->setInheritData($inheritData);
         $config->setPropertyPath($propertyPath);
@@ -121,54 +121,54 @@ public function testMapToFormInheritingParentDataIfDataDoesNotMatch()
     {
         $violation = $this->getConstraintViolation('children[address].data.foo');
         $parent = $this->getForm('parent');
-        $child = $this->getForm('address', 'address', null, array(), true);
+        $child = $this->getForm('address', 'address', null, [], true);
         $grandChild = $this->getForm('street');
 
         $parent->add($child);
         $child->add($grandChild);
 
-        $parent->submit(array());
+        $parent->submit([]);
 
         $this->mapper->mapViolation($violation, $parent);
 
         $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
-        $this->assertEquals(array($this->getFormError($violation, $child)), iterator_to_array($child->getErrors()), $child->getName().' should have an error, but has none');
+        $this->assertEquals([$this->getFormError($violation, $child)], iterator_to_array($child->getErrors()), $child->getName().' should have an error, but has none');
         $this->assertCount(0, $grandChild->getErrors(), $grandChild->getName().' should not have an error, but has one');
     }
 
     public function testFollowDotRules()
     {
         $violation = $this->getConstraintViolation('data.foo');
-        $parent = $this->getForm('parent', null, null, array(
+        $parent = $this->getForm('parent', null, null, [
             'foo' => 'address',
-        ));
-        $child = $this->getForm('address', null, null, array(
+        ]);
+        $child = $this->getForm('address', null, null, [
             '.' => 'street',
-        ));
-        $grandChild = $this->getForm('street', null, null, array(
+        ]);
+        $grandChild = $this->getForm('street', null, null, [
             '.' => 'name',
-        ));
+        ]);
         $grandGrandChild = $this->getForm('name');
 
         $parent->add($child);
         $child->add($grandChild);
         $grandChild->add($grandGrandChild);
 
-        $parent->submit(array());
+        $parent->submit([]);
 
         $this->mapper->mapViolation($violation, $parent);
 
         $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
         $this->assertCount(0, $child->getErrors(), $child->getName().' should not have an error, but has one');
         $this->assertCount(0, $grandChild->getErrors(), $grandChild->getName().' should not have an error, but has one');
-        $this->assertEquals(array($this->getFormError($violation, $grandGrandChild)), iterator_to_array($grandGrandChild->getErrors()), $grandGrandChild->getName().' should have an error, but has none');
+        $this->assertEquals([$this->getFormError($violation, $grandGrandChild)], iterator_to_array($grandGrandChild->getErrors()), $grandGrandChild->getName().' should have an error, but has none');
     }
 
     public function testAbortMappingIfNotSynchronized()
     {
         $violation = $this->getConstraintViolation('children[address].data.street');
         $parent = $this->getForm('parent');
-        $child = $this->getForm('address', 'address', null, array(), false, false);
+        $child = $this->getForm('address', 'address', null, [], false, false);
         // even though "street" is synchronized, it should not have any errors
         // due to its parent not being synchronized
         $grandChild = $this->getForm('street', 'street');
@@ -177,7 +177,7 @@ public function testAbortMappingIfNotSynchronized()
         $child->add($grandChild);
 
         // invoke the transformer and mark the form unsynchronized
-        $parent->submit(array());
+        $parent->submit([]);
 
         $this->mapper->mapViolation($violation, $parent);
 
@@ -190,9 +190,9 @@ public function testAbortDotRuleMappingIfNotSynchronized()
     {
         $violation = $this->getConstraintViolation('data.address');
         $parent = $this->getForm('parent');
-        $child = $this->getForm('address', 'address', null, array(
+        $child = $this->getForm('address', 'address', null, [
             '.' => 'street',
-        ), false, false);
+        ], false, false);
         // even though "street" is synchronized, it should not have any errors
         // due to its parent not being synchronized
         $grandChild = $this->getForm('street');
@@ -201,7 +201,7 @@ public function testAbortDotRuleMappingIfNotSynchronized()
         $child->add($grandChild);
 
         // invoke the transformer and mark the form unsynchronized
-        $parent->submit(array());
+        $parent->submit([]);
 
         $this->mapper->mapViolation($violation, $parent);
 
@@ -221,8 +221,8 @@ public function testAbortMappingIfNotSubmitted()
         $child->add($grandChild);
 
         // Disable automatic submission of missing fields
-        $parent->submit(array(), false);
-        $child->submit(array(), false);
+        $parent->submit([], false);
+        $child->submit([], false);
 
         // $grandChild is not submitted
 
@@ -237,17 +237,17 @@ public function testAbortDotRuleMappingIfNotSubmitted()
     {
         $violation = $this->getConstraintViolation('data.address');
         $parent = $this->getForm('parent');
-        $child = $this->getForm('address', 'address', null, array(
+        $child = $this->getForm('address', 'address', null, [
             '.' => 'street',
-        ));
+        ]);
         $grandChild = $this->getForm('street');
 
         $parent->add($child);
         $child->add($grandChild);
 
         // Disable automatic submission of missing fields
-        $parent->submit(array(), false);
-        $child->submit(array(), false);
+        $parent->submit([], false);
+        $child->submit([], false);
 
         // $grandChild is not submitted
 
@@ -262,526 +262,526 @@ public function provideDefaultTests()
     {
         // The mapping must be deterministic! If a child has the property path "[street]",
         // "data[street]" should be mapped, but "data.street" should not!
-        return array(
+        return [
             // mapping target, child name, its property path, grand child name, its property path, violation path
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', ''),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data'),
-
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].data.street.prop'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data[street].prop'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'data.address.street'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'data.address.street.prop'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'street', 'data.address[street]'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'street', 'data.address[street].prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address].street'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address].street.prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address][street]'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address][street].prop'),
-
-            array(self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_1, 'address', 'address', 'street', '[street]', 'children[address].data'),
-            array(self::LEVEL_1, 'address', 'address', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_1, 'address', 'address', 'street', '[street]', 'children[address].data.street.prop'),
-            array(self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address].data[street].prop'),
-            array(self::LEVEL_1, 'address', 'address', 'street', '[street]', 'data.address.street'),
-            array(self::LEVEL_1, 'address', 'address', 'street', '[street]', 'data.address.street.prop'),
-            array(self::LEVEL_2, 'address', 'address', 'street', '[street]', 'data.address[street]'),
-            array(self::LEVEL_2, 'address', 'address', 'street', '[street]', 'data.address[street].prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', '[street]', 'data[address].street'),
-            array(self::LEVEL_0, 'address', 'address', 'street', '[street]', 'data[address].street.prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', '[street]', 'data[address][street]'),
-            array(self::LEVEL_0, 'address', 'address', 'street', '[street]', 'data[address][street].prop'),
-
-            array(self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', 'street', 'children[address].data'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address].data.street.prop'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', 'street', 'children[address].data[street].prop'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', 'street', 'data.address.street'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', 'street', 'data.address.street.prop'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', 'street', 'data.address[street]'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', 'street', 'data.address[street].prop'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', 'street', 'data[address].street'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', 'street', 'data[address].street.prop'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', 'street', 'data[address][street]'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', 'street', 'data[address][street].prop'),
-
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[street]', 'children[address].data'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[street]', 'children[address].data.street.prop'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'children[address].data[street].prop'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', '[street]', 'data.address.street'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', '[street]', 'data.address.street.prop'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', '[street]', 'data.address[street]'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', '[street]', 'data.address[street].prop'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[street]', 'data[address].street'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[street]', 'data[address].street.prop'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'data[address][street]'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'data[address][street].prop'),
-
-            array(self::LEVEL_2, 'address', 'person.address', 'street', 'street', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'address', 'person.address', 'street', 'street', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_1, 'address', 'person.address', 'street', 'street', 'children[address].data'),
-            array(self::LEVEL_2, 'address', 'person.address', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_2, 'address', 'person.address', 'street', 'street', 'children[address].data.street.prop'),
-            array(self::LEVEL_1, 'address', 'person.address', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_1, 'address', 'person.address', 'street', 'street', 'children[address].data[street].prop'),
-            array(self::LEVEL_2, 'address', 'person.address', 'street', 'street', 'data.person.address.street'),
-            array(self::LEVEL_2, 'address', 'person.address', 'street', 'street', 'data.person.address.street.prop'),
-            array(self::LEVEL_1, 'address', 'person.address', 'street', 'street', 'data.person.address[street]'),
-            array(self::LEVEL_1, 'address', 'person.address', 'street', 'street', 'data.person.address[street].prop'),
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'data.person[address].street'),
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'data.person[address].street.prop'),
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'data.person[address][street]'),
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'data.person[address][street].prop'),
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'data[person].address.street'),
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-            array(self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data.office'),
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-            array(self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address].office.street.prop'),
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-            array(self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address][office].street.prop'),
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-            array(self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address][office][street].prop'),
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-            array(self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'children[address].children[street].data'),
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-            array(self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office.street'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office.street.prop'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office[street]'),
-            array(self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office[street].prop'),
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10000
   array(self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office]'),
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-            array(self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office].street.prop'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office][street]'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office][street].prop'),
-            array(self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address.office.street'),
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-            array(self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'data[address][office][street].prop'),
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', ''],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data'],
+
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].data.street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data[street].prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'data.address.street'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'data.address.street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'street', 'data.address[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'street', 'data.address[street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address].street'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address].street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address][street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address][street].prop'],
+
+            [self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[street]', 'children[address].data'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[street]', 'children[address].data.street.prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address].data[street]'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address].data[street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[street]', 'data.address.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[street]', 'data.address.street.prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[street]', 'data.address[street]'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[street]', 'data.address[street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[street]', 'data[address].street'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[street]', 'data[address].street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[street]', 'data[address][street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[street]', 'data[address][street].prop'],
+
+            [self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address].children[street].data'],
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+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'children[address].data[office][street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'children[address].data[office][street].prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'office.street', 'data.address.office.street'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'office.street', 'data.address.office.street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'data.address.office[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'data.address.office[street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'data.address[office].street'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'data.address[office].street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'data.address[office][street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'data.address[office][street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office.street', 'data[address].office.street'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office.street', 'data[address].office.street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office.street', 'data[address].office[street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office.street', 'data[address].office[street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office.street', 'data[address][office].street'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office.street', 'data[address][office].street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office.street', 'data[address][office][street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office.street', 'data[address][office][street].prop'],
+
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office.street', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office.street', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data.office'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office.street', 'children[address].data.office.street'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office.street', 'children[address].data.office.street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data.office[street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data.office[street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data[office]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data[office].street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data[office].street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data[office][street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'children[address].data[office][street].prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office.street', 'data.address.office.street'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office.street', 'data.address.office.street.prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office.street', 'data.address.office[street]'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office.street', 'data.address.office[street].prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office.street', 'data.address[office].street'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office.street', 'data.address[office].street.prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office.street', 'data.address[office][street]'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office.street', 'data.address[office][street].prop'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office.street', 'data[address].office.street'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office.street', 'data[address].office.street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'data[address].office[street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'data[address].office[street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'data[address][office].street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'data[address][office].street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'data[address][office][street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office.street', 'data[address][office][street].prop'],
+
+            [self::LEVEL_2, 'address', 'address', 'street', 'office[street]', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'office[street]', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data.office'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data.office.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data.office.street.prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'office[street]', 'children[address].data.office[street]'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'office[street]', 'children[address].data.office[street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data[office]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data[office].street'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data[office].street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data[office][street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'children[address].data[office][street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'data.address.office.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'data.address.office.street.prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'office[street]', 'data.address.office[street]'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'office[street]', 'data.address.office[street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'data.address[office].street'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'data.address[office].street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'data.address[office][street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office[street]', 'data.address[office][street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office[street]', 'data[address].office.street'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office[street]', 'data[address].office.street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office[street]', 'data[address].office[street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office[street]', 'data[address].office[street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office[street]', 'data[address][office].street'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office[street]', 'data[address][office].street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office[street]', 'data[address][office][street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'office[street]', 'data[address][office][street].prop'],
+
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office[street]', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office[street]', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'children[address].data.office.street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'children[address].data.office.street.prop'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office[street]', 'children[address].data.office[street]'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office[street]', 'children[address].data.office[street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'children[address].data[office]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'children[address].data[office].street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'children[address].data[office].street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'children[address].data[office][street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'children[address].data[office][street].prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office[street]', 'data.address.office.street'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office[street]', 'data.address.office.street.prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office[street]', 'data.address.office[street]'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office[street]', 'data.address.office[street].prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office[street]', 'data.address[office].street'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office[street]', 'data.address[office].street.prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office[street]', 'data.address[office][street]'],
+            [self::LEVEL_0, 'address', '[address]', 'street', 'office[street]', 'data.address[office][street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'data[address].office.street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'data[address].office.street.prop'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office[street]', 'data[address].office[street]'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'office[street]', 'data[address].office[street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'data[address][office].street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'data[address][office].street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'data[address][office][street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', 'office[street]', 'data[address][office][street].prop'],
+
+            [self::LEVEL_2, 'address', 'address', 'street', '[office].street', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office].street', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data.office'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data.office.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data.office.street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data.office[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data.office[street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data[office]'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office].street', 'children[address].data[office].street'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office].street', 'children[address].data[office].street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data[office][street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'children[address].data[office][street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'data.address.office.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'data.address.office.street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'data.address.office[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'data.address.office[street].prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office].street', 'data.address[office].street'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office].street', 'data.address[office].street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'data.address[office][street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office].street', 'data.address[office][street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office].street', 'data[address].office.street'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office].street', 'data[address].office.street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office].street', 'data[address].office[street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office].street', 'data[address].office[street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office].street', 'data[address][office].street'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office].street', 'data[address][office].street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office].street', 'data[address][office][street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office].street', 'data[address][office][street].prop'],
+
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office].street', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office].street', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data.office'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data.office.street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data.office.street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data.office[street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data.office[street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data[office]'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office].street', 'children[address].data[office].street'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office].street', 'children[address].data[office].street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data[office][street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'children[address].data[office][street].prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office].street', 'data.address.office.street'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office].street', 'data.address.office.street.prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office].street', 'data.address.office[street]'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office].street', 'data.address.office[street].prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office].street', 'data.address[office].street'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office].street', 'data.address[office].street.prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office].street', 'data.address[office][street]'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office].street', 'data.address[office][street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'data[address].office.street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'data[address].office.street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'data[address].office[street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'data[address].office[street].prop'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office].street', 'data[address][office].street'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office].street', 'data[address][office].street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'data[address][office][street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office].street', 'data[address][office][street].prop'],
+
+            [self::LEVEL_2, 'address', 'address', 'street', '[office][street]', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office][street]', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data.office'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data.office.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data.office.street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data.office[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data.office[street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data[office]'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data[office].street'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'children[address].data[office].street.prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office][street]', 'children[address].data[office][street]'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office][street]', 'children[address].data[office][street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'data.address.office.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'data.address.office.street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'data.address.office[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'data.address.office[street].prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'data.address[office].street'],
+            [self::LEVEL_1, 'address', 'address', 'street', '[office][street]', 'data.address[office].street.prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office][street]', 'data.address[office][street]'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[office][street]', 'data.address[office][street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address].office.street'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address].office.street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address].office[street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address].office[street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address][office].street'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address][office].street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address][office][street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', '[office][street]', 'data[address][office][street].prop'],
+
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office.street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office.street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office[street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data.office[street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office].street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office].street.prop'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office][street]'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'children[address].data[office][street].prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address.office.street'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address.office.street.prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address.office[street]'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address.office[street].prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address[office].street'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address[office].street.prop'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address[office][street]'],
+            [self::LEVEL_0, 'address', '[address]', 'street', '[office][street]', 'data.address[office][street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'data[address].office.street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'data[address].office.street.prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'data[address].office[street]'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'data[address].office[street].prop'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'data[address][office].street'],
+            [self::LEVEL_1, 'address', '[address]', 'street', '[office][street]', 'data[address][office].street.prop'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'data[address][office][street]'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[office][street]', 'data[address][office][street].prop'],
 
             // Edge cases which must not occur
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address][street]'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address][street].prop'),
-            array(self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address][street]'),
-            array(self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address][street].prop'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address][street]'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address][street].prop'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'children[address][street]'),
-            array(self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'children[address][street].prop'),
-
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'children[person].children[address].children[street]'),
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'children[person].children[address].data.street'),
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'children[person].data.address.street'),
-            array(self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'data.address.street'),
-
-            array(self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'children[address].children[office].children[street]'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'children[address].children[office].data.street'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'children[address].data.street'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'data.address.street'),
-        );
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address][street]'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address][street].prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address][street]'],
+            [self::LEVEL_2, 'address', 'address', 'street', '[street]', 'children[address][street].prop'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address][street]'],
+            [self::LEVEL_2, 'address', '[address]', 'street', 'street', 'children[address][street].prop'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'children[address][street]'],
+            [self::LEVEL_2, 'address', '[address]', 'street', '[street]', 'children[address][street].prop'],
+
+            [self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'children[person].children[address].children[street]'],
+            [self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'children[person].children[address].data.street'],
+            [self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'children[person].data.address.street'],
+            [self::LEVEL_0, 'address', 'person.address', 'street', 'street', 'data.address.street'],
+
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'children[address].children[office].children[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'children[address].children[office].data.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'children[address].data.street'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'office.street', 'data.address.street'],
+        ];
     }
 
     /**
@@ -797,446 +797,446 @@ public function testDefaultErrorMapping($target, $childName, $childPath, $grandC
         $parent->add($child);
         $child->add($grandChild);
 
-        $parent->submit(array());
+        $parent->submit([]);
 
         $this->mapper->mapViolation($violation, $parent);
 
         if (self::LEVEL_0 === $target) {
-            $this->assertEquals(array($this->getFormError($violation, $parent)), iterator_to_array($parent->getErrors()), $parent->getName().' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $parent)], iterator_to_array($parent->getErrors()), $parent->getName().' should have an error, but has none');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
         } elseif (self::LEVEL_1 === $target) {
             $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $child)), iterator_to_array($child->getErrors()), $childName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $child)], iterator_to_array($child->getErrors()), $childName.' should have an error, but has none');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
         } else {
             $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $grandChild)), iterator_to_array($grandChild->getErrors()), $grandChildName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $grandChild)], iterator_to_array($grandChild->getErrors()), $grandChildName.' should have an error, but has none');
         }
     }
 
     public function provideCustomDataErrorTests()
     {
-        return array(
+        return [
             // mapping target, error mapping, child name, its property path, grand child name, its property path, violation path
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo].prop'),
-
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address].prop'),
-
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].prop'),
-

10000
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address]'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].prop'),
-
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo.street'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo.street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo[street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo[street].prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo].street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo].street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo][street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo][street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address.street'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address.street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address[street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address[street].prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address].street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address].street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address][street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address][street].prop'),
-
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.foo.street'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.foo.street.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.foo[street]'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.foo[street].prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[foo].street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[foo].street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[foo][street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[foo][street].prop'),
-
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.address.street'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.address.street.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.address[street]'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.address[street].prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[address].street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[address].street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[address][street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[address][street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street].prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street].prop'),
-
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address.street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address.street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address[street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address[street].prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address].street'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address].street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address][street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address][street].prop'),
-
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.foo.street'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.foo.street.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.foo[street]'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.foo[street].prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[foo].street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[foo].street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[foo][street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[foo][street].prop'),
-
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.address.street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.address.street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.address[street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.address[street].prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[address].street'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[address].street.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[address][street]'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[address][street].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo[street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo[street].prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].street'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].street.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo][street]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo][street].prop'),
-
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address.street'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address.street.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address[street]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address[street].prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address].street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address].street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address][street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address][street].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[street].prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].street'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].street.prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][street]'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][street].prop'),
-
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.address.street'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.address.street.prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.address[street]'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.address[street].prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[address].street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[address].street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[address][street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[address][street].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street].prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address.street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address.street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address[street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address[street].prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address].street'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address].street.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address][street]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address][street].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.foo.street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.foo.street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.foo[street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.foo[street].prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[foo].street'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[foo].street.prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[foo][street]'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[foo][street].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.address.street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.address.street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.address[street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.address[street].prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[address].street'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[address].street.prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[address][street]'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[address][street].prop'),
-
-            array(self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar'),
-            array(self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar]'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar]'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'),
-
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'),
-            array(self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar]'),
-            array(self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar]'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'),
-
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar]'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'),
-            array(self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar'),
-            array(self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar]'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'),
-
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar]'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'),
-            array(self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar]'),
-            array(self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'),
-
-            array(self::LEVEL_2, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street'),
-            array(self::LEVEL_2, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street.prop'),
-            array(self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street]'),
-            array(self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street].prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street.prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street]'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street].prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street.prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street]'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street].prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street.prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street]'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street].prop'),
-
-            array(self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street'),
-            array(self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street.prop'),
-            array(self::LEVEL_2, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street]'),
-            array(self::LEVEL_2, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street].prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street.prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street]'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street].prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street.prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street]'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street].prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street.prop'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street]'),
-            array(self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street].prop'),
-
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street.prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street]'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street].prop'),
-            array(self::LEVEL_2, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street'),
-            array(self::LEVEL_2, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street.prop'),
-            array(self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street]'),
-            array(self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street].prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street.prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street]'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street].prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street.prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street]'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street].prop'),
-
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street.prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street]'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street].prop'),
-            array(self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street'),
-            array(self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street.prop'),
-            array(self::LEVEL_2, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street]'),
-            array(self::LEVEL_2, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street].prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street.prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street]'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street].prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street.prop'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street]'),
-            array(self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street].prop'),
-
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street.prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street]'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street].prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street.prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street]'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street].prop'),
-            array(self::LEVEL_2, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street'),
-            array(self::LEVEL_2, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street.prop'),
-            array(self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street]'),
-            array(self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street].prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street.prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street]'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street].prop'),
-
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street.prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street]'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street].prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street.prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street]'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street].prop'),
-            array(self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street'),
-            array(self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street.prop'),
-            array(self::LEVEL_2, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street]'),
-            array(self::LEVEL_2, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street].prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street.prop'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street]'),
-            array(self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street].prop'),
-
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street.prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street]'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street].prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street.prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street]'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street].prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street.prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street]'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street].prop'),
-            array(self::LEVEL_2, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street'),
-            array(self::LEVEL_2, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street.prop'),
-            array(self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street]'),
-            array(self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street].prop'),
-
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street.prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street]'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street].prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street.prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street]'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street].prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street.prop'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street]'),
-            array(self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street].prop'),
-            array(self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street'),
-            array(self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street.prop'),
-            array(self::LEVEL_2, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street]'),
-            array(self::LEVEL_2, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address.street', 'address', 'address', 'street', 'street', 'data.foo'),
-            array(self::LEVEL_2, 'foo', 'address.street', 'address', 'address', 'street', 'street', 'data.foo.prop'),
-            array(self::LEVEL_2, '[foo]', 'address.street', 'address', 'address', 'street', 'street', 'data[foo]'),
-            array(self::LEVEL_2, '[foo]', 'address.street', 'address', 'address', 'street', 'street', 'data[foo].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo'),
-            array(self::LEVEL_2, 'foo', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo.prop'),
-            array(self::LEVEL_2, '[foo]', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo]'),
-            array(self::LEVEL_2, '[foo]', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo'),
-            array(self::LEVEL_2, 'foo', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo.prop'),
-            array(self::LEVEL_2, '[foo]', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo]'),
-            array(self::LEVEL_2, '[foo]', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo].prop'),
-
-            array(self::LEVEL_2, 'foo.bar', 'address.street', 'address', 'address', 'street', 'street', 'data.foo.bar'),
-            array(self::LEVEL_2, 'foo.bar', 'address.street', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'),
-            array(self::LEVEL_2, 'foo[bar]', 'address.street', 'address', 'address', 'street', 'street', 'data.foo[bar]'),
-            array(self::LEVEL_2, 'foo[bar]', 'address.street', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'),
-            array(self::LEVEL_2, '[foo].bar', 'address.street', 'address', 'address', 'street', 'street', 'data[foo].bar'),
-            array(self::LEVEL_2, '[foo].bar', 'address.street', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'),
-            array(self::LEVEL_2, '[foo][bar]', 'address.street', 'address', 'address', 'street', 'street', 'data[foo][bar]'),
-            array(self::LEVEL_2, '[foo][bar]', 'address.street', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'),
-
-            array(self::LEVEL_2, 'foo.bar', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo.bar'),
-            array(self::LEVEL_2, 'foo.bar', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo.bar.prop'),
-            array(self::LEVEL_2, 'foo[bar]', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo[bar]'),
-            array(self::LEVEL_2, 'foo[bar]', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo[bar].prop'),
-            array(self::LEVEL_2, '[foo].bar', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo].bar'),
-            array(self::LEVEL_2, '[foo].bar', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo].bar.prop'),
-            array(self::LEVEL_2, '[foo][bar]', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo][bar]'),
-            array(self::LEVEL_2, '[foo][bar]', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo][bar].prop'),
-
-            array(self::LEVEL_2, 'foo.bar', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo.bar'),
-            array(self::LEVEL_2, 'foo.bar', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo.bar.prop'),
-            array(self::LEVEL_2, 'foo[bar]', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo[bar]'),
-            array(self::LEVEL_2, 'foo[bar]', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo[bar].prop'),
-            array(self::LEVEL_2, '[foo].bar', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo].bar'),
-            array(self::LEVEL_2, '[foo].bar', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo].bar.prop'),
-            array(self::LEVEL_2, '[foo][bar]', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo][bar]'),
-            array(self::LEVEL_2, '[foo][bar]', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo][bar].prop'),
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo'],
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo].prop'],
+
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address'],
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address].prop'],
+
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].prop'],
+
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address]'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo]'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].prop'],
+
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo]'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address]'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo.street'],
+            [self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo.street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo[street]'],
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.foo[street].prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo].street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo].street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo][street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[foo][street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address.street'],
+            [self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address.street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address[street]'],
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', 'street', 'data.address[street].prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address].street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address].street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address][street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', 'street', 'data[address][street].prop'],
+
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.foo.street'],
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.foo.street.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.foo[street]'],
+            [self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.foo[street].prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[foo].street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[foo].street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[foo][street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[foo][street].prop'],
+
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.address.street'],
+            [self::LEVEL_1, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.address.street.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.address[street]'],
+            [self::LEVEL_2, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data.address[street].prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[address].street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[address].street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[address][street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', 'address', 'street', '[street]', 'data[address][street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street'],
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street]'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street].prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street].prop'],
+
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address.street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address.street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address[street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.address[street].prop'],
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address].street'],
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address].street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address][street]'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[address][street].prop'],
+
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.foo.street'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.foo.street.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.foo[street]'],
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.foo[street].prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[foo].street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[foo].street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[foo][street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[foo][street].prop'],
+
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.address.street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.address.street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.address[street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data.address[street].prop'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[address].street'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[address].street.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[address][street]'],
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', '[street]', 'data[address][street].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo[street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo[street].prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].street'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].street.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo][street]'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo][street].prop'],
+
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address.street'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address.street.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address[street]'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.address[street].prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address].street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address].street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address][street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[address][street].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[street].prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].street'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].street.prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][street]'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][street].prop'],
+
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.address.street'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.address.street.prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.address[street]'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data.address[street].prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[address].street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[address].street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[address][street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', '[street]', 'data[address][street].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street].prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street]'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address.street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address.street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address[street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data.address[street].prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address].street'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address].street.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address][street]'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', 'street', 'data[address][street].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.foo.street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.foo.street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.foo[street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.foo[street].prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[foo].street'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[foo].street.prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[foo][street]'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[foo][street].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.address.street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.address.street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.address[street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data.address[street].prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[address].street'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[address].street.prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[address][street]'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', '[address]', 'street', '[street]', 'data[address][street].prop'],
+
+            [self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar'],
+            [self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar]'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar]'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'],
+
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'],
+            [self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar]'],
+            [self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar]'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'],
+
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar]'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'],
+            [self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar'],
+            [self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar]'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'],
+
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar]'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'],
+            [self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar]'],
+            [self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'],
+
+            [self::LEVEL_2, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street'],
+            [self::LEVEL_2, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street.prop'],
+            [self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street]'],
+            [self::LEVEL_1, 'foo.bar', 'address', 'add
10000
ress', 'address', 'street', 'street', 'data.foo.bar[street].prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street.prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street]'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street].prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street.prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street]'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street].prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street.prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street]'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street].prop'],
+
+            [self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street'],
+            [self::LEVEL_1, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street.prop'],
+            [self::LEVEL_2, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street]'],
+            [self::LEVEL_2, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street].prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street.prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street]'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street].prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street.prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street]'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street].prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street.prop'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street]'],
+            [self::LEVEL_0, 'foo.bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street].prop'],
+
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street.prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street]'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street].prop'],
+            [self::LEVEL_2, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street'],
+            [self::LEVEL_2, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street.prop'],
+            [self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street]'],
+            [self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street].prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street.prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street]'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street].prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street.prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street]'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street].prop'],
+
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street.prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street]'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street].prop'],
+            [self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street'],
+            [self::LEVEL_1, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street.prop'],
+            [self::LEVEL_2, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street]'],
+            [self::LEVEL_2, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street].prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street.prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street]'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street].prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street.prop'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street]'],
+            [self::LEVEL_0, 'foo[bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street].prop'],
+
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street.prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street]'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street].prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street.prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street]'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street].prop'],
+            [self::LEVEL_2, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street'],
+            [self::LEVEL_2, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street.prop'],
+            [self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street]'],
+            [self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street].prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street.prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street]'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street].prop'],
+
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street.prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street]'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street].prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street.prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street]'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street].prop'],
+            [self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street'],
+            [self::LEVEL_1, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street.prop'],
+            [self::LEVEL_2, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street]'],
+            [self::LEVEL_2, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street].prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street.prop'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street]'],
+            [self::LEVEL_0, '[foo].bar', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street].prop'],
+
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar.street.prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street]'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo.bar[street].prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar].street.prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street]'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data.foo[bar][street].prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar.street.prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street]'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo].bar[street].prop'],
+            [self::LEVEL_2, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street'],
+            [self::LEVEL_2, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar].street.prop'],
+            [self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street]'],
+            [self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', 'street', 'data[foo][bar][street].prop'],
+
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar.street.prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street]'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo.bar[street].prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar].street.prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street]'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data.foo[bar][street].prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar.street.prop'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street]'],
+            [self::LEVEL_0, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo].bar[street].prop'],
+            [self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street'],
+            [self::LEVEL_1, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar].street.prop'],
+            [self::LEVEL_2, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street]'],
+            [self::LEVEL_2, '[foo][bar]', 'address', 'address', 'address', 'street', '[street]', 'data[foo][bar][street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address.street', 'address', 'address', 'street', 'street', 'data.foo'],
+            [self::LEVEL_2, 'foo', 'address.street', 'address', 'address', 'street', 'street', 'data.foo.prop'],
+            [self::LEVEL_2, '[foo]', 'address.street', 'address', 'address', 'street', 'street', 'data[foo]'],
+            [self::LEVEL_2, '[foo]', 'address.street', 'address', 'address', 'street', 'street', 'data[foo].prop'],
+
+            [self::LEVEL_2, 'foo', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo'],
+            [self::LEVEL_2, 'foo', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo.prop'],
+            [self::LEVEL_2, '[foo]', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo]'],
+            [self::LEVEL_2, '[foo]', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo].prop'],
+
+            [self::LEVEL_2, 'foo', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo'],
+            [self::LEVEL_2, 'foo', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo.prop'],
+            [self::LEVEL_2, '[foo]', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo]'],
+            [self::LEVEL_2, '[foo]', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo].prop'],
+
+            [self::LEVEL_2, 'foo.bar', 'address.street', 'address', 'address', 'street', 'street', 'data.foo.bar'],
+            [self::LEVEL_2, 'foo.bar', 'address.street', 'address', 'address', 'street', 'street', 'data.foo.bar.prop'],
+            [self::LEVEL_2, 'foo[bar]', 'address.street', 'address', 'address', 'street', 'street', 'data.foo[bar]'],
+            [self::LEVEL_2, 'foo[bar]', 'address.street', 'address', 'address', 'street', 'street', 'data.foo[bar].prop'],
+            [self::LEVEL_2, '[foo].bar', 'address.street', 'address', 'address', 'street', 'street', 'data[foo].bar'],
+            [self::LEVEL_2, '[foo].bar', 'address.street', 'address', 'address', 'street', 'street', 'data[foo].bar.prop'],
+            [self::LEVEL_2, '[foo][bar]', 'address.street', 'address', 'address', 'street', 'street', 'data[foo][bar]'],
+            [self::LEVEL_2, '[foo][bar]', 'address.street', 'address', 'address', 'street', 'street', 'data[foo][bar].prop'],
+
+            [self::LEVEL_2, 'foo.bar', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo.bar'],
+            [self::LEVEL_2, 'foo.bar', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo.bar.prop'],
+            [self::LEVEL_2, 'foo[bar]', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo[bar]'],
+            [self::LEVEL_2, 'foo[bar]', 'address.street', 'address', 'address', 'street', '[street]', 'data.foo[bar].prop'],
+            [self::LEVEL_2, '[foo].bar', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo].bar'],
+            [self::LEVEL_2, '[foo].bar', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo].bar.prop'],
+            [self::LEVEL_2, '[foo][bar]', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo][bar]'],
+            [self::LEVEL_2, '[foo][bar]', 'address.street', 'address', 'address', 'street', '[street]', 'data[foo][bar].prop'],
+
+            [self::LEVEL_2, 'foo.bar', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo.bar'],
+            [self::LEVEL_2, 'foo.bar', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo.bar.prop'],
+            [self::LEVEL_2, 'foo[bar]', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo[bar]'],
+            [self::LEVEL_2, 'foo[bar]', 'address.street', 'address', '[address]', 'street', 'street', 'data.foo[bar].prop'],
+            [self::LEVEL_2, '[foo].bar', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo].bar'],
+            [self::LEVEL_2, '[foo].bar', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo].bar.prop'],
+            [self::LEVEL_2, '[foo][bar]', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo][bar]'],
+            [self::LEVEL_2, '[foo][bar]', 'address.street', 'address', '[address]', 'street', 'street', 'data[foo][bar].prop'],
 
             // Edge cases
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street'),
-            array(self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street].prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street.prop'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street]'),
-            array(self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street].prop'),
-
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.street'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.street.prop'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo[street]'),
-            array(self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo[street].prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].street'),
-            array(self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].street.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo][street]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo][street].prop'),
-        );
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street'],
+            [self::LEVEL_2, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo.street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street]'],
+            [self::LEVEL_1, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data.foo[street].prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo].street.prop'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street]'],
+            [self::LEVEL_0, 'foo', 'address', 'address', '[address]', 'street', 'street', 'data[foo][street].prop'],
+
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.street'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo.street.prop'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo[street]'],
+            [self::LEVEL_0, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data.foo[street].prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].street'],
+            [self::LEVEL_2, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo].street.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo][street]'],
+            [self::LEVEL_1, '[foo]', 'address', 'address', 'address', 'street', 'street', 'data[foo][street].prop'],
+        ];
     }
 
     /**
@@ -1245,7 +1245,7 @@ public function provideCustomDataErrorTests()
     public function testCustomDataErrorMapping($target, $mapFrom, $mapTo, $childName, $childPath, $grandChildName, $grandChildPath, $violationPath)
     {
         $violation = $this->getConstraintViolation($violationPath);
-        $parent = $this->getForm('parent', null, null, array($mapFrom => $mapTo));
+        $parent = $this->getForm('parent', null, null, [$mapFrom => $mapTo]);
         $child = $this->getForm($childName, $childPath);
         $grandChild = $this->getForm($grandChildName, $grandChildPath);
 
@@ -1267,7 +1267,7 @@ public function testCustomDataErrorMapping($target, $mapFrom, $mapTo, $childName
             $parent->add($distraction);
         }
 
-        $parent->submit(array());
+        $parent->submit([]);
 
         $this->mapper->mapViolation($violation, $parent);
 
@@ -1276,17 +1276,17 @@ public function testCustomDataErrorMapping($target, $mapFrom, $mapTo, $childName
         }
 
         if (self::LEVEL_0 === $target) {
-            $this->assertEquals(array($this->getFormError($violation, $parent)), iterator_to_array($parent->getErrors()), $parent->getName().' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $parent)], iterator_to_array($parent->getErrors()), $parent->getName().' should have an error, but has none');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
         } elseif (self::LEVEL_1 === $target) {
             $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $child)), iterator_to_array($child->getErrors()), $childName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $child)], iterator_to_array($child->getErrors()), $childName.' should have an error, but has none');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
         } else {
             $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $grandChild)), iterator_to_array($grandChild->getErrors()), $grandChildName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $grandChild)], iterator_to_array($grandChild->getErrors()), $grandChildName.' should have an error, but has none');
         }
     }
 
@@ -1298,145 +1298,145 @@ public function provideCustomFormErrorTests()
         // 1) the error actually maps to an existing child and
         // 2) the property path of that child (relative to the form providing
         //    the mapping) matches the left side of the mapping
-        return array(
+        return [
             // mapping target, map from, map to, child name, its property path, grand child name, its property path, violation path
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].children[street].data'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].children[street].data.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data.street'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data.street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data[street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data[street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street].prop'),
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].children[street].data'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].children[street].data.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data.street'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data.street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data[street]'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data[street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street].data.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street].prop'],
 
             // Property path of the erroneous field and mapping must match exactly
-            array(self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].children[street].data'),
-            array(self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].children[street].data.prop'),
-            array(self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data.street'),
-            array(self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data.street.prop'),
-            array(self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data[street]'),
-            array(self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data[street].prop'),
-
-            array(self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].children[street].data'),
-            array(self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].children[street].data.prop'),
-            array(self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data.street'),
-            array(self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data.street.prop'),
-            array(self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data[street]'),
-            array(self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data[street].prop'),
-
-            array(self::LEVEL_1, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].children[street].data'),
-            array(self::LEVEL_1, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].children[street].data.prop'),
-            array(self::LEVEL_2, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data.street'),
-            array(self::LEVEL_2, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data.street.prop'),
-            array(self::LEVEL_1, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data[street]'),
-            array(self::LEVEL_1, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data[street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].children[street].data'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].children[street].data.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].data.street'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].data.street.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].data[street]'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].data[street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street].prop'),
-
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].children[street].data'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].children[street].data.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].data.street'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].data.street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].data[street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].data[street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].children[street].data'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].children[street].data.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].data.street'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].data.street.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].data[street]'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].data[street].prop'),
-
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street.prop'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street].prop'),
+            [self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].children[street].data'],
+            [self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].children[street].data.prop'],
+            [self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data.street'],
+            [self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data.street.prop'],
+            [self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data[street]'],
+            [self::LEVEL_1B, 'foo', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data[street].prop'],
+
+            [self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].children[street].data'],
+            [self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].children[street].data.prop'],
+            [self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data.street'],
+            [self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data.street.prop'],
+            [self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data[street]'],
+            [self::LEVEL_1B, '[foo]', 'address', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo].data[street].prop'],
+
+            [self::LEVEL_1, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].children[street].data'],
+            [self::LEVEL_1, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].children[street].data.prop'],
+            [self::LEVEL_2, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data.street'],
+            [self::LEVEL_2, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data.street.prop'],
+            [self::LEVEL_1, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data[street]'],
+            [self::LEVEL_1, '[foo]', 'address', 'foo', '[foo]', 'address', 'address', 'street', 'street', 'children[foo].data[street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].children[street].data'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].children[street].data.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].data.street'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].data.street.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].data[street]'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo].data[street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street].prop'],
+
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].children[street].data'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].children[street].data.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].data.street'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].data.street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].data[street]'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo].data[street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street].data.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].children[street].data'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].children[street].data.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].data.street'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].data.street.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].data[street]'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo].data[street].prop'],
+
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street].data.prop'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_1, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street.prop'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'],
+            [self::LEVEL_2, 'foo', 'address', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street].prop'],
 
             // Map to a nested child
-            array(self::LEVEL_2, 'foo', 'address.street', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo]'),
-            array(self::LEVEL_2, 'foo', 'address.street', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo]'),
-            array(self::LEVEL_2, 'foo', 'address.street', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo]'),
-            array(self::LEVEL_2, 'foo', 'address.street', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo]'),
+            [self::LEVEL_2, 'foo', 'address.street', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[foo]'],
+            [self::LEVEL_2, 'foo', 'address.street', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[foo]'],
+            [self::LEVEL_2, 'foo', 'address.street', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[foo]'],
+            [self::LEVEL_2, 'foo', 'address.street', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[foo]'],
 
             // Map from a nested child
-            array(self::LEVEL_1B, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street]'),
-            array(self::LEVEL_1B, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_1, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street]'),
-            array(self::LEVEL_1B, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street]'),
-            array(self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_1, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street]'),
-            array(self::LEVEL_1, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'),
-
-            array(self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street]'),
-            array(self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_1B, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_1B, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street]'),
-            array(self::LEVEL_1, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_1B, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street]'),
-            array(self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_1, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street]'),
-            array(self::LEVEL_1, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'),
-
-            array(self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street]'),
-            array(self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_1, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street]'),
-            array(self::LEVEL_1, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'),
-            array(self::LEVEL_1B, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street]'),
-            array(self::LEVEL_1B, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_1, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street]'),
-            array(self::LEVEL_1B, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'),
-
-            array(self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street]'),
-            array(self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_1, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street]'),
-            array(self::LEVEL_1, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'),
-            array(self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street]'),
-            array(self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_1B, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_1B, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street]'),
-            array(self::LEVEL_1, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'),
-            array(self::LEVEL_1B, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'),
-        );
+            [self::LEVEL_1B, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street]'],
+            [self::LEVEL_1B, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_1, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street]'],
+            [self::LEVEL_1B, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'],
+            [self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street]'],
+            [self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_1, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street]'],
+            [self::LEVEL_1, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_2, 'address.street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'],
+
+            [self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street]'],
+            [self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_1B, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_1B, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street]'],
+            [self::LEVEL_1, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_1B, 'address[street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'],
+            [self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street]'],
+            [self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_1, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street]'],
+            [self::LEVEL_1, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_2, 'address[street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'],
+
+            [self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street]'],
+            [self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_1, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street]'],
+            [self::LEVEL_1, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'],
+            [self::LEVEL_1B, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street]'],
+            [self::LEVEL_1B, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_1, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street]'],
+            [self::LEVEL_1B, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_2, '[address].street', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'],
+
+            [self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].children[street]'],
+            [self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_1, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].children[street]'],
+            [self::LEVEL_1, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', 'address', 'street', '[street]', 'children[address].data[street]'],
+            [self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].children[street]'],
+            [self::LEVEL_2, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_1B, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_1B, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].children[street]'],
+            [self::LEVEL_1, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data.street'],
+            [self::LEVEL_1B, '[address][street]', 'foo', 'foo', 'foo', 'address', '[address]', 'street', '[street]', 'children[address].data[street]'],
+        ];
     }
 
     /**
@@ -1445,7 +1445,7 @@ public function provideCustomFormErrorTests()
     public function testCustomFormErrorMapping($target, $mapFrom, $mapTo, $errorName, $errorPath, $childName, $childPath, $grandChildName, $grandChildPath, $violationPath)
     {
         $violation = $this->getConstraintViolation($violationPath);
-        $parent = $this->getForm('parent', null, null, array($mapFrom => $mapTo));
+        $parent = $this->getForm('parent', null, null, [$mapFrom => $mapTo]);
         $child = $this->getForm($childName, $childPath);
         $grandChild = $this->getForm($grandChildName, $grandChildPath);
         $errorChild = $this->getForm($errorName, $errorPath);
@@ -1454,22 +1454,22 @@ public function testCustomFormErrorMapping($target, $mapFrom, $mapTo, $errorName
         $parent->add($errorChild);
         $child->add($grandChild);
 
-        $parent->submit(array());
+        $parent->submit([]);
 
         $this->mapper->mapViolation($violation, $parent);
 
         if (self::LEVEL_0 === $target) {
             $this->assertCount(0, $errorChild->getErrors(), $errorName.' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $parent)), iterator_to_array($parent->getErrors()), $parent->getName().' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $parent)], iterator_to_array($parent->getErrors()), $parent->getName().' should have an error, but has none');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
         } elseif (self::LEVEL_1 === $target) {
             $this->assertCount(0, $errorChild->getErrors(), $errorName.' should not have an error, but has one');
             $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $child)), iterator_to_array($child->getErrors()), $childName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $child)], iterator_to_array($child->getErrors()), $childName.' should have an error, but has none');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
         } elseif (self::LEVEL_1B === $target) {
-            $this->assertEquals(array($this->getFormError($violation, $errorChild)), iterator_to_array($errorChild->getErrors()), $errorName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $errorChild)], iterator_to_array($errorChild->getErrors()), $errorName.' should have an error, but has none');
             $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
@@ -1477,33 +1477,33 @@ public function testCustomFormErrorMapping($target, $mapFrom, $mapTo, $errorName
             $this->assertCount(0, $errorChild->getErrors(), $errorName.' should not have an error, but has one');
             $this->assertCount(0, $parent
10000
->getErrors(), $parent->getName().' should not have an error, but has one');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $grandChild)), iterator_to_array($grandChild->getErrors()), $grandChildName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $grandChild)], iterator_to_array($grandChild->getErrors()), $grandChildName.' should have an error, but has none');
         }
     }
 
     public function provideErrorTestsForFormInheritingParentData()
     {
-        return array(
+        return [
             // mapping target, child name, its property path, grand child name, its property path, violation path
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].children[street].data'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].children[street].data.prop'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].data.street'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].data.street.prop'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data[street]'),
-            array(self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data[street].prop'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'data.street'),
-            array(self::LEVEL_2, 'address', 'address', 'street', 'street', 'data.street.prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[street]'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[street].prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data.address.street'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data.address.street.prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data.address[street]'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data.address[street].prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address].street'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address].street.prop'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address][street]'),
-            array(self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address][street].prop'),
-        );
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].children[street].data'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].children[street].data.prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].data.street'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'children[address].data.street.prop'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data[street]'],
+            [self::LEVEL_1, 'address', 'address', 'street', 'street', 'children[address].data[street].prop'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'data.street'],
+            [self::LEVEL_2, 'address', 'address', 'street', 'street', 'data.street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data.address.street'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data.address.street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data.address[street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data.address[street].prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address].street'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address].street.prop'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address][street]'],
+            [self::LEVEL_0, 'address', 'address', 'street', 'street', 'data[address][street].prop'],
+        ];
     }
 
     /**
@@ -1513,28 +1513,28 @@ public function testErrorMappingForFormInheritingParentData($target, $childName,
     {
         $violation = $this->getConstraintViolation($violationPath);
         $parent = $this->getForm('parent');
-        $child = $this->getForm($childName, $childPath, null, array(), true);
+        $child = $this->getForm($childName, $childPath, null, [], true);
         $grandChild = $this->getForm($grandChildName, $grandChildPath);
 
         $parent->add($child);
         $child->add($grandChild);
 
-        $parent->submit(array());
+        $parent->submit([]);
 
         $this->mapper->mapViolation($violation, $parent);
 
         if (self::LEVEL_0 === $target) {
-            $this->assertEquals(array($this->getFormError($violation, $parent)), iterator_to_array($parent->getErrors()), $parent->getName().' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $parent)], iterator_to_array($parent->getErrors()), $parent->getName().' should have an error, but has none');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
         } elseif (self::LEVEL_1 === $target) {
             $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $child)), iterator_to_array($child->getErrors()), $childName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $child)], iterator_to_array($child->getErrors()), $childName.' should have an error, but has none');
             $this->assertCount(0, $grandChild->getErrors(), $grandChildName.' should not have an error, but has one');
         } else {
             $this->assertCount(0, $parent->getErrors(), $parent->getName().' should not have an error, but has one');
             $this->assertCount(0, $child->getErrors(), $childName.' should not have an error, but has one');
-            $this->assertEquals(array($this->getFormError($violation, $grandChild)), iterator_to_array($grandChild->getErrors()), $grandChildName.' should have an error, but has none');
+            $this->assertEquals([$this->getFormError($violation, $grandChild)], iterator_to_array($grandChild->getErrors()), $grandChildName.' should have an error, but has none');
         }
     }
 
@@ -1543,8 +1543,8 @@ public function testBacktrackIfSeveralSubFormsWithSamePropertyPath()
         $parent = $this->getForm('parent');
         $child1 = $this->getForm('subform1', 'address');
         $child2 = $this->getForm('subform2', 'address');
-        $child3 = $this->getForm('subform3', null, null, array(), true);
-        $child4 = $this->getForm('subform4', null, null, array(), true);
+        $child3 = $this->getForm('subform3', null, null, [], true);
+        $child4 = $this->getForm('subform4', null, null, [], true);
         $grandChild1 = $this->getForm('street');
         $grandChild2 = $this->getForm('street', '[sub_address1_street]');
         $grandChild3 = $this->getForm('street', '[sub_address2_street]');
@@ -1557,7 +1557,7 @@ public function testBacktrackIfSeveralSubFormsWithSamePropertyPath()
         $child3->add($grandChild2);
         $child4->add($grandChild3);
 
-        $parent->submit(array());
+        $parent->submit([]);
 
         $violation1 = $this->getConstraintViolation('data.address[street]');
         $violation2 = $this->getConstraintViolation('data[sub_address1_street]');
@@ -1571,8 +1571,8 @@ public function testBacktrackIfSeveralSubFormsWithSamePropertyPath()
         $this->assertCount(0, $child2->getErrors(), $child2->getName().' should not have an error, but has one');
         $this->assertCount(0, $child3->getErrors(), $child3->getName().' should not have an error, but has one');
         $this->assertCount(0, $child4->getErrors(), $child4->getName().' should not have an error, but has one');
-        $this->assertEquals(array($this->getFormError($violation1, $grandChild1)), iterator_to_array($grandChild1->getErrors()), $grandChild1->getName().' should have an error, but has none');
-        $this->assertEquals(array($this->getFormError($violation2, $grandChild2)), iterator_to_array($grandChild2->getErrors()), $grandChild2->getName().' should have an error, but has none');
-        $this->assertEquals(array($this->getFormError($violation3, $grandChild3)), iterator_to_array($grandChild3->getErrors()), $grandChild3->getName().' should have an error, but has none');
+        $this->assertEquals([$this->getFormError($violation1, $grandChild1)], iterator_to_array($grandChild1->getErrors()), $grandChild1->getName().' should have an error, but has none');
+        $this->assertEquals([$this->getFormError($violation2, $grandChild2)], iterator_to_array($grandChild2->getErrors()), $grandChild2->getName().' should have an error, but has none');
+        $this->assertEquals([$this->getFormError($violation3, $grandChild3)], iterator_to_array($grandChild3->getErrors()), $grandChild3->getName().' should have an error, but has none');
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationPathTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationPathTest.php
index 2e1c9f673daa..7a6602d27e93 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationPathTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/ViolationMapper/ViolationPathTest.php
@@ -21,67 +21,67 @@ class ViolationPathTest extends TestCase
 {
     public function providePaths()
     {
-        return array(
-            array('children[address]', array(
-                array('address', true, true),
-            )),
-            array('children[address].children[street]', array(
-                array('address', true, true),
-                array('street', true, true),
-            )),
-            array('children[address][street]', array(
-                array('address', true, true),
-                array('street', true, true),
-            ), 'children[address].children[street]'),
-            array('children[address].data', array(
-                array('address', true, true),
-            ), 'children[address]'),
-            array('children[address].data.street', array(
-                array('address', true, true),
-                array('street', false, false),
-            )),
-            array('children[address].data[street]', array(
-                array('address', true, true),
-                array('street', false, true),
-            )),
-            array('children[address].children[street].data.name', array(
-                array('address', true, true),
-                array('street', true, true),
-                array('name', false, false),
-            )),
-            array('children[address].children[street].data[name]', array(
-                array('address', true, true),
-                array('street', true, true),
-                array('name', false, true),
-            )),
-            array('data.address', array(
-                array('address', false, false),
-            )),
-            array('data[address]', array(
-                array('address', false, true),
-            )),
-            array('data.address.street', array(
-                array('address', false, false),
-                array('street', false, false),
-            )),
-            array('data[address].street', array(
-                array('address', false, true),
-                array('street', false, false),
-            )),
-            array('data.address[street]', array(
-                array('address', false, false),
-                array('street', false, true),
-            )),
-            array('data[address][street]', array(
-                array('address', false, true),
-                array('street', false, true),
-            )),
+        return [
+            ['children[address]', [
+                ['address', true, true],
+            ]],
+            ['children[address].children[street]', [
+                ['address', true, true],
+                ['street', true, true],
+            ]],
+            ['children[address][street]', [
+                ['address', true, true],
+                ['street', true, true],
+            ], 'children[address].children[street]'],
+            ['children[address].data', [
+                ['address', true, true],
+            ], 'children[address]'],
+            ['children[address].data.street', [
+                ['address', true, true],
+                ['street', false, false],
+            ]],
+            ['children[address].data[street]', [
+                ['address', true, true],
+                ['street', false, true],
+            ]],
+            ['children[address].children[street].data.name', [
+                ['address', true, true],
+                ['street', true, true],
+                ['name', false, false],
+            ]],
+            ['children[address].children[street].data[name]', [
+                ['address', true, true],
+                ['street', true, true],
+                ['name', false, true],
+            ]],
+            ['data.address', [
+                ['address', false, false],
+            ]],
+            ['data[address]', [
+                ['address', false, true],
+            ]],
+            ['data.address.street', [
+                ['address', false, false],
+                ['street', false, false],
+            ]],
+            ['data[address].street', [
+                ['address', false, true],
+                ['street', false, false],
+            ]],
+            ['data.address[street]', [
+                ['address', false, false],
+                ['street', false, true],
+            ]],
+            ['data[address][street]', [
+                ['address', false, true],
+                ['street', false, true],
+            ]],
             // A few invalid examples
-            array('data', array(), ''),
-            array('children', array(), ''),
-            array('children.address', array(), ''),
-            array('children.address[street]', array(), ''),
-        );
+            ['data', [], ''],
+            ['children', [], ''],
+            ['children.address', [], ''],
+            ['children.address[street]', [], ''],
+        ];
     }
 
     /**
@@ -109,17 +109,17 @@ public function testCreatePath($string, $entries, $slicedPath = null)
 
     public function provideParents()
     {
-        return array(
-            array('children[address]', null),
-            array('children[address].children[street]', 'children[address]'),
-            array('children[address].data.street', 'children[address]'),
-            array('children[address].data[street]', 'children[address]'),
-            array('data.address', null),
-            array('data.address.street', 'data.address'),
-            array('data.address[street]', 'data.address'),
-            array('data[address].street', 'data[address]'),
-            array('data[address][street]', 'data[address]'),
-        );
+        return [
+            ['children[address]', null],
+            ['children[address].children[street]', 'children[address]'],
+            ['children[address].data.street', 'children[address]'],
+            ['children[address].data[street]', 'children[address]'],
+            ['data.address', null],
+            ['data.address.street', 'data.address'],
+            ['data.address[street]', 'data.address'],
+            ['data[address].street', 'data[address]'],
+            ['data[address][street]', 'data[address]'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/AuthorType.php b/src/Symfony/Component/Form/Tests/Fixtures/AuthorType.php
index 504f812dff3a..84c988984f64 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/AuthorType.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/AuthorType.php
@@ -18,8 +18,8 @@ public function buildForm(FormBuilderInterface $builder, array $options)
 
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'data_class' => 'Symfony\Component\Form\Tests\Fixtures\Author',
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/ChoiceSubType.php b/src/Symfony/Component/Form/Tests/Fixtures/ChoiceSubType.php
index dbd8843d8e7e..580e21570869 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/ChoiceSubType.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/ChoiceSubType.php
@@ -24,12 +24,12 @@ class ChoiceSubType extends AbstractType
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array('expanded' => true));
+        $resolver->setDefaults(['expanded' => true]);
         $resolver->setNormalizer('choices', function () {
-            return array(
+            return [
                 'attr1' => 'Attribute 1',
                 'attr2' => 'Attribute 2',
-            );
+            ];
         });
     }
 
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/ChoiceTypeExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/ChoiceTypeExtension.php
index db4166ff3092..766b46928849 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/ChoiceTypeExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/ChoiceTypeExtension.php
@@ -29,10 +29,10 @@ public function __construct($extendedType = ChoiceType::class)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefault('choices', array(
+        $resolver->setDefault('choices', [
             'A' => 'a',
             'B' => 'b',
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/CustomArrayObject.php b/src/Symfony/Component/Form/Tests/Fixtures/CustomArrayObject.php
index 91b277303732..39758e781884 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/CustomArrayObject.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/CustomArrayObject.php
@@ -21,7 +21,7 @@ class CustomArrayObject implements \ArrayAccess, \IteratorAggregate, \Countable,
 
     public function __construct(array $array = null)
     {
-        $this->array = $array ?: array();
+        $this->array = $array ?: [];
     }
 
     public function offsetExists($offset)
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/FixedFilterListener.php b/src/Symfony/Component/Form/Tests/Fixtures/FixedFilterListener.php
index 5a85ea8d1980..7ca0187c643a 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/FixedFilterListener.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/FixedFilterListener.php
@@ -21,11 +21,11 @@ class FixedFilterListener implements EventSubscriberInterface
 
     public function __construct(array $mapping)
     {
-        $this->mapping = array_merge(array(
-            'preSubmit' => array(),
-            'onSubmit' => array(),
-            'preSetData' => array(),
-        ), $mapping);
+        $this->mapping = array_merge([
+            'preSubmit' => [],
+            'onSubmit' => [],
+            'preSetData' => [],
+        ], $mapping);
     }
 
     public function preSubmit(FormEvent $event)
@@ -57,10 +57,10 @@ public function preSetData(FormEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             FormEvents::PRE_SUBMIT => 'preSubmit',
             FormEvents::SUBMIT => 'onSubmit',
             FormEvents::PRE_SET_DATA => 'preSetData',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBarExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBarExtension.php
index 8d72132f2f1f..7eda15546cd5 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBarExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBarExtension.php
@@ -23,9 +23,9 @@ public function buildForm(FormBuilderInterface $builder, array $options)
 
     public function getAllowedOptionValues()
     {
-        return array(
-            'a_or_b' => array('c'),
-        );
+        return [
+            'a_or_b' => ['c'],
+        ];
     }
 
     public function getExtendedType()
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/LazyChoiceTypeExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/LazyChoiceTypeExtension.php
index 133b8829e0df..a67501820d85 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/LazyChoiceTypeExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/LazyChoiceTypeExtension.php
@@ -31,10 +31,10 @@ public function __construct($extendedType = ChoiceType::class)
     public function configureOptions(OptionsResolver $resolver)
     {
         $resolver->setDefault('choice_loader', new CallbackChoiceLoader(function () {
-            return array(
+            return [
                 'Lazy A' => 'lazy_a',
                 'Lazy B' => 'lazy_b',
-            );
+            ];
         }));
     }
 
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/TestExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/TestExtension.php
index bdbc5a9c1cfb..6e548d619592 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/TestExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/TestExtension.php
@@ -18,9 +18,9 @@
 
 class TestExtension implements FormExtensionInterface
 {
-    private $types = array();
+    private $types = [];
 
-    private $extensions = array();
+    private $extensions = [];
 
     private $guesser;
 
@@ -49,7 +49,7 @@ public function addTypeExtension(FormTypeExtensionInterface $extension)
         $type = $extension->getExtendedType();
 
         if (!isset($this->extensions[$type])) {
-            $this->extensions[$type] = array();
+            $this->extensions[$type] = [];
         }
 
         $this->extensions[$type][] = $extension;
@@ -57,7 +57,7 @@ public function addTypeExtension(FormTypeExtensionInterface $extension)
 
     public function getTypeExtensions($name)
     {
-        return isset($this->extensions[$name]) ? $this->extensions[$name] : array();
+        return isset($this->extensions[$name]) ? $this->extensions[$name] : [];
     }
 
     public function hasTypeExtensions($name)
diff --git a/src/Symfony/Component/Form/Tests/FormBuilderTest.php b/src/Symfony/Component/Form/Tests/FormBuilderTest.php
index 2ecd19f5eaab..ecab2bb5d91e 100644
--- a/src/Symfony/Component/Form/Tests/FormBuilderTest.php
+++ b/src/Symfony/Component/Form/Tests/FormBuilderTest.php
@@ -68,7 +68,7 @@ public function testAddWithGuessFluent()
 
     public function testAddIsFluent()
     {
-        $builder = $this->builder->add('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', array('bar' => 'baz'));
+        $builder = $this->builder->add('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', ['bar' => 'baz']);
         $this->assertSame($builder, $this->builder);
     }
 
@@ -115,7 +115,7 @@ public function testMaintainOrderOfLazyAndExplicitChildren()
 
         $children = $this->builder->all();
 
-        $this->assertSame(array('foo', 'bar', 'baz'), array_keys($children));
+        $this->assertSame(['foo', 'bar', 'baz'], array_keys($children));
     }
 
     public function testAddFormType()
@@ -151,7 +151,7 @@ public function testCreateNoTypeNo()
     {
         $this->factory->expects($this->once())
             ->method('createNamedBuilder')
-            ->with('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array())
+            ->with('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [])
         ;
 
         $this->builder->create('foo');
@@ -181,7 +181,7 @@ public function testGetExplicitType()
     {
         $expectedType = 'Symfony\Component\Form\Extension\Core\Type\TextType';
         $expectedName = 'foo';
-        $expectedOptions = array('bar' => 'baz');
+        $expectedOptions = ['bar' => 'baz'];
 
         $this->factory->expects($this->once())
             ->method('createNamedBuilder')
@@ -197,7 +197,7 @@ public function testGetExplicitType()
     public function testGetGuessedType()
     {
         $expectedName = 'foo';
-        $expectedOptions = array('bar' => 'baz');
+        $expectedOptions = ['bar' => 'baz'];
 
         $this->factory->expects($this->once())
             ->method('createBuilderForProperty')
diff --git a/src/Symfony/Component/Form/Tests/FormConfigTest.php b/src/Symfony/Component/Form/Tests/FormConfigTest.php
index bb922bf3d61f..db32fb1a1e63 100644
--- a/src/Symfony/Component/Form/Tests/FormConfigTest.php
+++ b/src/Symfony/Component/Form/Tests/FormConfigTest.php
@@ -21,48 +21,48 @@ class FormConfigTest extends TestCase
 {
     public function getHtml4Ids()
     {
-        return array(
-            array('z0'),
-            array('A0'),
-            array('A9'),
-            array('Z0'),
-            array('#', 'Symfony\Component\Form\Exception\InvalidArgumentException'),
-            array('a#', 'Symfony\Component\Form\Exception\InvalidArgumentException'),
-            array('a$', 'Symfony\Component\Form\Exception\InvalidArgumentException'),
-            array('a%', 'Symfony\Component\Form\Exception\InvalidArgumentException'),
-            array('a ', 'Symfony\Component\Form\Exception\InvalidArgumentException'),
-            array("a\t", 'Symfony\Component\Form\Exception\InvalidArgumentException'),
-            array("a\n", 'Symfony\Component\Form\Exception\InvalidArgumentException'),
-            array('a-'),
-            array('a_'),
-            array('a:'),
+        return [
+            ['z0'],
+            ['A0'],
+            ['A9'],
+            ['Z0'],
+            ['#', 'Symfony\Component\Form\Exception\InvalidArgumentException'],
+            ['a#', 'Symfony\Component\Form\Exception\InvalidArgumentException'],
+            ['a$', 'Symfony\Component\Form\Exception\InvalidArgumentException'],
+            ['a%', 'Symfony\Component\Form\Exception\InvalidArgumentException'],
+            ['a ', 'Symfony\Component\Form\Exception\InvalidArgumentException'],
+            ["a\t", 'Symfony\Component\Form\Exception\InvalidArgumentException'],
+            ["a\n", 'Symfony\Component\Form\Exception\InvalidArgumentException'],
+            ['a-'],
+            ['a_'],
+            ['a:'],
             // Periods are allowed by the HTML4 spec, but disallowed by us
             // because they break the generated property paths
-            array('a.', 'Symfony\Component\Form\Exception\InvalidArgumentException'),
+            ['a.', 'Symfony\Component\Form\Exception\InvalidArgumentException'],
             // Contrary to the HTML4 spec, we allow names starting with a
             // number, otherwise naming fields by collection indices is not
             // possible.
             // For root forms, leading digits will be stripped from the
             // "id" attribute to produce valid HTML4.
-            array('0'),
-            array('9'),
+            ['0'],
+            ['9'],
             // Contrary to the HTML4 spec, we allow names starting with an
             // underscore, since this is already a widely used practice in
             // Symfony.
             // For root forms, leading underscores will be stripped from the
             // "id" attribute to produce valid HTML4.
-            array('_'),
+            ['_'],
             // Integers are allowed
-            array(0),
-            array(123),
+            [0],
+            [123],
             // NULL is allowed
-            array(null),
+            [null],
             // Other types are not
-            array(1.23, 'Symfony\Component\Form\Exception\UnexpectedTypeException'),
-            array(5., 'Symfony\Component\Form\Exception\UnexpectedTypeException'),
-            array(true, 'Symfony\Component\Form\Exception\UnexpectedTypeException'),
-            array(new \stdClass(), 'Symfony\Component\Form\Exception\UnexpectedTypeException'),
-        );
+            [1.23, 'Symfony\Component\Form\Exception\UnexpectedTypeException'],
+            [5., 'Symfony\Component\Form\Exception\UnexpectedTypeException'],
+            [true, 'Symfony\Component\Form\Exception\UnexpectedTypeException'],
+            [new \stdClass(), 'Symfony\Component\Form\Exception\UnexpectedTypeException'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/FormErrorIteratorTest.php b/src/Symfony/Component/Form/Tests/FormErrorIteratorTest.php
index 04eddd1c3235..4ed30414f3ad 100644
--- a/src/Symfony/Component/Form/Tests/FormErrorIteratorTest.php
+++ b/src/Symfony/Component/Form/Tests/FormErrorIteratorTest.php
@@ -34,17 +34,17 @@ public function testFindByCodes($code, $violationsCount)
             null,
             new EventDispatcher(),
             $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock(),
-            array()
+            []
         );
 
         $form = $formBuilder->getForm();
 
-        $cause = new ConstraintViolation('Error 1!', null, array(), null, '', null, null, 'code1');
-        $form->addError(new FormError('Error 1!', null, array(), null, $cause));
-        $cause = new ConstraintViolation('Error 2!', null, array(), null, '', null, null, 'code1');
-        $form->addError(new FormError('Error 2!', null, array(), null, $cause));
-        $cause = new ConstraintViolation('Error 3!', null, array(), null, '', null, null, 'code2');
-        $form->addError(new FormError('Error 3!', null, array(), null, $cause));
+        $cause = new ConstraintViolation('Error 1!', null, [], null, '', null, null, 'code1');
+        $form->addError(new FormError('Error 1!', null, [], null, $cause));
+        $cause = new ConstraintViolation('Error 2!', null, [], null, '', null, null, 'code1');
+        $form->addError(new FormError('Error 2!', null, [], null, $cause));
+        $cause = new ConstraintViolation('Error 3!', null, [], null, '', null, null, 'code2');
+        $form->addError(new FormError('Error 3!', null, [], null, $cause));
         $formErrors = $form->getErrors();
 
         $specificFormErrors = $formErrors->findByCodes($code);
@@ -54,10 +54,10 @@ public function testFindByCodes($code, $violationsCount)
 
     public function findByCodesProvider()
     {
-        return array(
-            array('code1', 2),
-            array(array('code1', 'code2'), 3),
-            array('code3', 0),
-        );
+        return [
+            ['code1', 2],
+            [['code1', 'code2'], 3],
+            ['code3', 0],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/FormFactoryTest.php b/src/Symfony/Component/Form/Tests/FormFactoryTest.php
index ce65e05bb170..27a5ca6e20f7 100644
--- a/src/Symfony/Component/Form/Tests/FormFactoryTest.php
+++ b/src/Symfony/Component/Form/Tests/FormFactoryTest.php
@@ -58,16 +58,16 @@ protected function setUp()
 
         $this->registry->expects($this->any())
             ->method('getTypeGuesser')
-            ->will($this->returnValue(new FormTypeGuesserChain(array(
+            ->will($this->returnValue(new FormTypeGuesserChain([
                 $this->guesser1,
                 $this->guesser2,
-            ))));
+            ])));
     }
 
     public function testCreateNamedBuilderWithTypeName()
     {
-        $options = array('a' => '1', 'b' => '2');
-        $resolvedOptions = array('a' => '2', 'b' => '3');
+        $options = ['a' => '1', 'b' => '2'];
+        $resolvedOptions = ['a' => '2', 'b' => '3'];
         $resolvedType = $this->getMockResolvedType();
 
         $this->registry->expects($this->once())
@@ -93,9 +93,9 @@ public function testCreateNamedBuilderWithTypeName()
 
     public function testCreateNamedBuilderFillsDataOption()
     {
-        $givenOptions = array('a' => '1', 'b' => '2');
-        $expectedOptions = array_merge($givenOptions, array('data' => 'DATA'));
-        $resolvedOptions = array('a' => '2', 'b' => '3', 'data' => 'DATA');
+        $givenOptions = ['a' => '1', 'b' => '2'];
+        $expectedOptions = array_merge($givenOptions, ['data' => 'DATA']);
+        $resolvedOptions = ['a' => '2', 'b' => '3', 'data' => 'DATA'];
         $resolvedType = $this->getMockResolvedType();
 
         $this->registry->expects($this->once())
@@ -121,8 +121,8 @@ public function testCreateNamedBuilderFillsDataOption()
 
     public function testCreateNamedBuilderDoesNotOverrideExistingDataOption()
     {
-        $options = array('a' => '1', 'b' => '2', 'data' => 'CUSTOM');
-        $resolvedOptions = array('a' => '2', 'b' => '3', 'data' => 'CUSTOM');
+        $options = ['a' => '1', 'b' => '2', 'data' => 'CUSTOM'];
+        $resolvedOptions = ['a' => '2', 'b' => '3', 'data' => 'CUSTOM'];
         $resolvedType = $this->getMockResolvedType();
 
         $this->registry->expects($this->once())
@@ -166,8 +166,8 @@ public function testCreateThrowsUnderstandableException()
 
     public function testCreateUsesBlockPrefixIfTypeGivenAsString()
     {
-        $options = array('a' => '1', 'b' => '2');
-        $resolvedOptions = array('a' => '2', 'b' => '3');
+        $options = ['a' => '1', 'b' => '2'];
+        $resolvedOptions = ['a' => '2', 'b' => '3'];
 
         // the interface does not have the method, so use the real class
         $resolvedType = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormType')
@@ -205,8 +205,8 @@ public function testCreateUsesBlockPrefixIfTypeGivenAsString()
 
     public function testCreateNamed()
     {
-        $options = array('a' => '1', 'b' => '2');
-        $resolvedOptions = array('a' => '2', 'b' => '3');
+        $options = ['a' => '1', 'b' => '2'];
+        $resolvedOptions = ['a' => '2', 'b' => '3'];
         $resolvedType = $this->getMockResolvedType();
 
         $this->registry->expects($this->once())
@@ -238,13 +238,13 @@ public function testCreateBuilderForPropertyWithoutTypeGuesser()
     {
         $registry = $this->getMockBuilder('Symfony\Component\Form\FormRegistryInterface')->getMock();
         $factory = $this->getMockBuilder('Symfony\Component\Form\FormFactory')
-            ->setMethods(array('createNamedBuilder'))
-            ->setConstructorArgs(array($registry))
+            ->setMethods(['createNamedBuilder'])
+            ->setConstructorArgs([$registry])
             ->getMock();
 
         $factory->expects($this->once())
             ->method('createNamedBuilder')
-            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array())
+            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [])
             ->will($this->returnValue('builderInstance'));
 
         $this->builder = $factory->createBuilderForProperty('Application\Author', 'firstName');
@@ -259,7 +259,7 @@ public function testCreateBuilderForPropertyCreatesFormWithHighestConfidence()
             ->with('Application\Author', 'firstName')
             ->will($this->returnValue(new TypeGuess(
                 'Symfony\Component\Form\Extension\Core\Type\TextType',
-                array('attr' => array('maxlength' => 10)),
+                ['attr' => ['maxlength' => 10]],
                 Guess::MEDIUM_CONFIDENCE
             )));
 
@@ -268,15 +268,15 @@ public function testCreateBuilderForPropertyCreatesFormWithHighestConfidence()
             ->with('Application\Author', 'firstName')
             ->will($this->returnValue(new TypeGuess(
                 'Symfony\Component\Form\Extension\Core\Type\PasswordType',
-                array('attr' => array('maxlength' => 7)),
+                ['attr' => ['maxlength' => 7]],
                 Guess::HIGH_CONFIDENCE
             )));
 
-        $factory = $this->getMockFactory(array('createNamedBuilder'));
+        $factory = $this->getMockFactory(['createNamedBuilder']);
 
         $factory->expects($this->once())
             ->method('createNamedBuilder')
-            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', null, array('attr' => array('maxlength' => 7)))
+            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\PasswordType', null, ['attr' => ['maxlength' => 7]])
             ->will($this->returnValue('builderInstance'));
 
         $this->builder = $factory->createBuilderForProperty('Application\Author', 'firstName');
@@ -291,7 +291,7 @@ public function testCreateBuilderCreatesTextFormIfNoGuess()
             ->with('Application\Author', 'firstName')
             ->will($this->returnValue(null));
 
-        $factory = $this->getMockFactory(array('createNamedBuilder'));
+        $factory = $this->getMockFactory(['createNamedBuilder']);
 
         $factory->expects($this->once())
             ->method('createNamedBuilder')
@@ -310,22 +310,22 @@ public function testOptionsCanBeOverridden()
             ->with('Application\Author', 'firstName')
             ->will($this->returnValue(new TypeGuess(
                 'Symfony\Component\Form\Extension\Core\Type\TextType',
-                array('attr' => array('class' => 'foo', 'maxlength' => 10)),
+                ['attr' => ['class' => 'foo', 'maxlength' => 10]],
                 Guess::MEDIUM_CONFIDENCE
             )));
 
-        $factory = $this->getMockFactory(array('createNamedBuilder'));
+        $factory = $this->getMockFactory(['createNamedBuilder']);
 
         $factory->expects($this->once())
             ->method('createNamedBuilder')
-            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array('attr' => array('class' => 'foo', 'maxlength' => 11)))
+            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, ['attr' => ['class' => 'foo', 'maxlength' => 11]])
             ->will($this->returnValue('builderInstance'));
 
         $this->builder = $factory->createBuilderForProperty(
             'Application\Author',
             'firstName',
             null,
-            array('attr' => array('maxlength' => 11))
+            ['attr' => ['maxlength' => 11]]
         );
 
         $this->assertEquals('builderInstance', $this->builder);
@@ -349,11 +349,11 @@ public function testCreateBuilderUsesMaxLengthIfFound()
                     Guess::HIGH_CONFIDENCE
                 )));
 
-        $factory = $this->getMockFactory(array('createNamedBuilder'));
+        $factory = $this->getMockFactory(['createNamedBuilder']);
 
         $factory->expects($this->once())
             ->method('createNamedBuilder')
-            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array('attr' => array('maxlength' => 20)))
+            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, ['attr' => ['maxlength' => 20]])
             ->will($this->returnValue('builderInstance'));
 
         $this->builder = $factory->createBuilderForProperty(
@@ -382,18 +382,18 @@ public function testCreateBuilderUsesMaxLengthAndPattern()
                 Guess::HIGH_CONFIDENCE
             )));
 
-        $factory = $this->getMockFactory(array('createNamedBuilder'));
+        $factory = $this->getMockFactory(['createNamedBuilder']);
 
         $factory->expects($this->once())
             ->method('createNamedBuilder')
-            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array('attr' => array('maxlength' => 20, 'pattern' => '.{5,}', 'class' => 'tinymce')))
+            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, ['attr' => ['maxlength' => 20, 'pattern' => '.{5,}', 'class' => 'tinymce']])
             ->will($this->returnValue('builderInstance'));
 
         $this->builder = $factory->createBuilderForProperty(
             'Application\Author',
             'firstName',
             null,
-            array('attr' => array('class' => 'tinymce'))
+            ['attr' => ['class' => 'tinymce']]
         );
 
         $this->assertEquals('builderInstance', $this->builder);
@@ -417,11 +417,11 @@ public function testCreateBuilderUsesRequiredSettingWithHighestConfidence()
                     Guess::HIGH_CONFIDENCE
                 )));
 
-        $factory = $this->getMockFactory(array('createNamedBuilder'));
+        $factory = $this->getMockFactory(['createNamedBuilder']);
 
         $factory->expects($this->once())
             ->method('createNamedBuilder')
-            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array('required' => false))
+            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, ['required' => false])
             ->will($this->returnValue('builderInstance'));
 
         $this->builder = $factory->createBuilderForProperty(
@@ -450,11 +450,11 @@ public function testCreateBuilderUsesPatternIfFound()
                     Guess::HIGH_CONFIDENCE
                 )));
 
-        $factory = $this->getMockFactory(array('createNamedBuilder'));
+        $factory = $this->getMockFactory(['createNamedBuilder']);
 
         $factory->expects($this->once())
             ->method('createNamedBuilder')
-            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array('attr' => array('pattern' => '[a-zA-Z]')))
+            ->with('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, ['attr' => ['pattern' => '[a-zA-Z]']])
             ->will($this->returnValue('builderInstance'));
 
         $this->builder = $factory->createBuilderForProperty(
@@ -465,11 +465,11 @@ public function testCreateBuilderUsesPatternIfFound()
         $this->assertEquals('builderInstance', $this->builder);
     }
 
-    private function getMockFactory(array $methods = array())
+    private function getMockFactory(array $methods = [])
     {
         return $this->getMockBuilder('Symfony\Component\Form\FormFactory')
             ->setMethods($methods)
-            ->setConstructorArgs(array($this->registry))
+            ->setConstructorArgs([$this->registry])
             ->getMock();
     }
 
diff --git a/src/Symfony/Component/Form/Tests/FormRegistryTest.php b/src/Symfony/Component/Form/Tests/FormRegistryTest.php
index ca38c7a8b294..e4dee5da8a07 100644
--- a/src/Symfony/Component/Form/Tests/FormRegistryTest.php
+++ b/src/Symfony/Component/Form/Tests/FormRegistryTest.php
@@ -68,10 +68,10 @@ protected function setUp()
         $this->guesser2 = $this->getMockBuilder('Symfony\Component\Form\FormTypeGuesserInterface')->getMock();
         $this->extension1 = new TestExtension($this->guesser1);
         $this->extension2 = new TestExtension($this->guesser2);
-        $this->registry = new FormRegistry(array(
+        $this->registry = new FormRegistry([
             $this->extension1,
             $this->extension2,
-        ), $this->resolvedTypeFactory);
+        ], $this->resolvedTypeFactory);
     }
 
     public function testGetTypeFromExtension()
@@ -123,7 +123,7 @@ public function testGetTypeWithTypeExtensions()
         $type = new FooType();
         $ext1 = new FooTypeBarExtension();
         $ext2 = new FooTypeBazExtension();
-        $resolvedType = new ResolvedFormType($type, array($ext1, $ext2));
+        $resolvedType = new ResolvedFormType($type, [$ext1, $ext2]);
 
         $this->extension2->addType($type);
         $this->extension1->addTypeExtension($ext1);
@@ -131,7 +131,7 @@ public function testGetTypeWithTypeExtensions()
 
         $this->resolvedTypeFactory->expects($this->once())
             ->method('createResolvedType')
-            ->with($type, array($ext1, $ext2))
+            ->with($type, [$ext1, $ext2])
             ->willReturn($resolvedType);
 
         $this->assertSame($resolvedType, $this->registry->getType(\get_class($type)));
@@ -154,7 +154,7 @@ public function testGetTypeConnectsParent()
 
         $this->resolvedTypeFactory->expects($this->at(1))
             ->method('createResolvedType')
-            ->with($type, array(), $parentResolvedType)
+            ->with($type, [], $parentResolvedType)
             ->willReturn($resolvedType);
 
         $this->assertSame($resolvedType, $this->registry->getType(\get_class($type)));
@@ -230,12 +230,12 @@ public function testDoesNotHaveTypeIfNoFormType()
 
     public function testGetTypeGuesser()
     {
-        $expectedGuesser = new FormTypeGuesserChain(array($this->guesser1, $this->guesser2));
+        $expectedGuesser = new FormTypeGuesserChain([$this->guesser1, $this->guesser2]);
 
         $this->assertEquals($expectedGuesser, $this->registry->getTypeGuesser());
 
         $registry = new FormRegistry(
-            array($this->getMockBuilder('Symfony\Component\Form\FormExtensionInterface')->getMock()),
+            [$this->getMockBuilder('Symfony\Component\Form\FormExtensionInterface')->getMock()],
             $this->resolvedTypeFactory
         );
 
@@ -244,7 +244,7 @@ public function testGetTypeGuesser()
 
     public function testGetExtensions()
     {
-        $expectedExtensions = array($this->extension1, $this->extension2);
+        $expectedExtensions = [$this->extension1, $this->extension2];
 
         $this->assertEquals($expectedExtensions, $this->registry->getExtensions());
     }
diff --git a/src/Symfony/Component/Form/Tests/Guess/GuessTest.php b/src/Symfony/Component/Form/Tests/Guess/GuessTest.php
index 8f7e1d020302..eea423bb9dc0 100644
--- a/src/Symfony/Component/Form/Tests/Guess/GuessTest.php
+++ b/src/Symfony/Component/Form/Tests/Guess/GuessTest.php
@@ -26,7 +26,7 @@ public function testGetBestGuessReturnsGuessWithHighestConfidence()
         $guess2 = new TestGuess(Guess::LOW_CONFIDENCE);
         $guess3 = new TestGuess(Guess::HIGH_CONFIDENCE);
 
-        $this->assertSame($guess3, Guess::getBestGuess(array($guess1, $guess2, $guess3)));
+        $this->assertSame($guess3, Guess::getBestGuess([$guess1, $guess2, $guess3]));
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Tests/NativeRequestHandlerTest.php b/src/Symfony/Component/Form/Tests/NativeRequestHandlerTest.php
index aba417288a94..db4902e34b9d 100644
--- a/src/Symfony/Component/Form/Tests/NativeRequestHandlerTest.php
+++ b/src/Symfony/Component/Form/Tests/NativeRequestHandlerTest.php
@@ -29,22 +29,22 @@ protected function setUp()
     {
         parent::setUp();
 
-        $_GET = array();
-        $_POST = array();
-        $_FILES = array();
-        $_SERVER = array(
+        $_GET = [];
+        $_POST = [];
+        $_FILES = [];
+        $_SERVER = [
             // PHPUnit needs this entry
             'SCRIPT_NAME' => self::$serverBackup['SCRIPT_NAME'],
-        );
+        ];
     }
 
     protected function tearDown()
     {
         parent::tearDown();
 
-        $_GET = array();
-        $_POST = array();
-        $_FILES = array();
+        $_GET = [];
+        $_POST = [];
+        $_FILES = [];
         $_SERVER = self::$serverBackup;
     }
 
@@ -60,9 +60,9 @@ public function testMethodOverrideHeaderTakesPrecedenceIfPost()
     {
         $form = $this->getMockForm('param1', 'PUT');
 
-        $this->setRequestData('POST', array(
+        $this->setRequestData('POST', [
             'param1' => 'DATA',
-        ));
+        ]);
 
         $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'] = 'PUT';
 
@@ -77,13 +77,13 @@ public function testConvertEmptyUploadedFilesToNull()
     {
         $form = $this->getMockForm('param1', 'POST', false);
 
-        $this->setRequestData('POST', array(), array('param1' => array(
+        $this->setRequestData('POST', [], ['param1' => [
             'name' => '',
             'type' => '',
             'tmp_name' => '',
             'error' => UPLOAD_ERR_NO_FILE,
             'size' => 0,
-        )));
+        ]]);
 
         $form->expects($this->once())
             ->method('submit')
@@ -96,35 +96,35 @@ public function testFixBuggyFilesArray()
     {
         $form = $this->getMockForm('param1', 'POST', false);
 
-        $this->setRequestData('POST', array(), array('param1' => array(
-            'name' => array(
+        $this->setRequestData('POST', [], ['param1' => [
+            'name' => [
                 'field' => 'upload.txt',
-            ),
-            'type' => array(
+            ],
+            'type' => [
                 'field' => 'text/plain',
-            ),
-            'tmp_name' => array(
+            ],
+            'tmp_name' => [
                 'field' => 'owfdskjasdfsa',
-            ),
-            'error' => array(
+            ],
+            'error' => [
                 'field' => UPLOAD_ERR_OK,
-            ),
-            'size' => array(
+            ],
+            'size' => [
                 'field' => 100,
-            ),
-        )));
+            ],
+        ]]);
 
         $form->expects($this->once())
             ->method('submit')
-            ->with(array(
-                'field' => array(
+            ->with([
+                'field' => [
                     'name' => 'upload.txt',
                     'type' => 'text/plain',
                     'tmp_name' => 'owfdskjasdfsa',
                     'error' => UPLOAD_ERR_OK,
                     'size' => 100,
-                ),
-            ));
+                ],
+            ]);
 
         $this->requestHandler->handleRequest($form, $this->request);
     }
@@ -133,37 +133,37 @@ public function testFixBuggyNestedFilesArray()
     {
         $form = $this->getMockForm('param1', 'POST');
 
-        $this->setRequestData('POST', array(), array('param1' => array(
-            'name' => array(
-                'field' => array('subfield' => 'upload.txt'),
-            ),
-            'type' => array(
-                'field' => array('subfield' => 'text/plain'),
-            ),
-            'tmp_name' => array(
-                'field' => array('subfield' => 'owfdskjasdfsa'),
-            ),
-            'error' => array(
-                'field' => array('subfield' => UPLOAD_ERR_OK),
-            ),
-            'size' => array(
-                'field' => array('subfield' => 100),
-            ),
-        )));
+        $this->setRequestData('POST', [], ['param1' => [
+            'name' => [
+                'field' => ['subfield' => 'upload.txt'],
+            ],
+            'type' => [
+                'field' => ['subfield' => 'text/plain'],
+            ],
+            'tmp_name' => [
+                'field' => ['subfield' => 'owfdskjasdfsa'],
+            ],
+            'error' => [
+                'field' => ['subfield' => UPLOAD_ERR_OK],
+            ],
+            'size' => [
+                'field' => ['subfield' => 100],
+            ],
+        ]]);
 
         $form->expects($this->once())
             ->method('submit')
-            ->with(array(
-                'field' => array(
-                    'subfield' => array(
+            ->with([
+                'field' => [
+                    'subfield' => [
                         'name' => 'upload.txt',
                         'type' => 'text/plain',
                         'tmp_name' => 'owfdskjasdfsa',
                         'error' => UPLOAD_ERR_OK,
                         'size' => 100,
-                    ),
-                ),
-            ));
+                    ],
+                ],
+            ]);
 
         $this->requestHandler->handleRequest($form, $this->request);
     }
@@ -172,9 +172,9 @@ public function testMethodOverrideHeaderIgnoredIfNotPost()
     {
         $form = $this->getMockForm('param1', 'POST');
 
-        $this->setRequestData('GET', array(
+        $this->setRequestData('GET', [
                 'param1' => 'DATA',
-            ));
+            ]);
 
         $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'] = 'PUT';
 
@@ -184,21 +184,21 @@ public function testMethodOverrideHeaderIgnoredIfNotPost()
         $this->requestHandler->handleRequest($form, $this->request);
     }
 
-    protected function setRequestData($method, $data, $files = array())
+    protected function setRequestData($method, $data, $files = [])
     {
         if ('GET' === $method) {
             $_GET = $data;
-            $_FILES = array();
+            $_FILES = [];
         } else {
             $_POST = $data;
             $_FILES = $files;
         }
 
-        $_SERVER = array(
+        $_SERVER = [
             'REQUEST_METHOD' => $method,
             // PHPUnit needs this entry
             'SCRIPT_NAME' => self::$serverBackup['SCRIPT_NAME'],
-        );
+        ];
     }
 
     protected function getRequestHandler()
@@ -208,23 +208,23 @@ protected function getRequestHandler()
 
     protected function getMockFile($suffix = '')
     {
-        return array(
+        return [
             'name' => 'upload'.$suffix.'.txt',
             'type' => 'text/plain',
             'tmp_name' => 'owfdskjasdfsa'.$suffix,
             'error' => UPLOAD_ERR_OK,
             'size' => 100,
-        );
+        ];
     }
 
     protected function getInvalidFile()
     {
-        return array(
+        return [
             'name' => 'upload.txt',
             'type' => 'text/plain',
             'tmp_name' => 'owfdskjasdfsa',
             'error' => '0',
             'size' => '100',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php b/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
index ca9ec14252ca..ff3e2cb87de8 100644
--- a/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
@@ -78,7 +78,7 @@ protected function setUp()
         $this->extension1 = $this->getMockFormTypeExtension();
         $this->extension2 = $this->getMockFormTypeExtension();
         $this->parentResolvedType = new ResolvedFormType($this->parentType);
-        $this->resolvedType = new ResolvedFormType($this->type, array($this->extension1, $this->extension2), $this->parentResolvedType);
+        $this->resolvedType = new ResolvedFormType($this->type, [$this->extension1, $this->extension2], $this->parentResolvedType);
     }
 
     public function testGetOptionsResolver()
@@ -91,7 +91,7 @@ public function testGetOptionsResolver()
 
                 ++$i;
 
-                $resolver->setDefaults(array($option => $default));
+                $resolver->setDefaults([$option => $default]);
             };
         };
 
@@ -114,8 +114,8 @@ public function testGetOptionsResolver()
             ->method('configureOptions')
             ->will($this->returnCallback($assertIndexAndAddOption(3, 'd', 'd_default')));
 
-        $givenOptions = array('a' => 'a_custom', 'c' => 'c_custom');
-        $resolvedOptions = array('a' => 'a_custom', 'b' => 'b_default', 'c' => 'c_custom', 'd' => 'd_default');
+        $givenOptions = ['a' => 'a_custom', 'c' => 'c_custom'];
+        $resolvedOptions = ['a' => 'a_custom', 'b' => 'b_default', 'c' => 'c_custom', 'd' => 'd_default'];
 
         $resolver = $this->resolvedType->getOptionsResolver();
 
@@ -124,13 +124,13 @@ public function testGetOptionsResolver()
 
     public function testCreateBuilder()
     {
-        $givenOptions = array('a' => 'a_custom', 'c' => 'c_custom');
-        $resolvedOptions = array('a' => 'a_custom', 'b' => 'b_default', 'c' => 'c_custom', 'd' => 'd_default');
+        $givenOptions = ['a' => 'a_custom', 'c' => 'c_custom'];
+        $resolvedOptions = ['a' => 'a_custom', 'b' => 'b_default', 'c' => 'c_custom', 'd' => 'd_default'];
         $optionsResolver = $this->getMockBuilder('Symfony\Component\OptionsResolver\OptionsResolver')->getMock();
 
         $this->resolvedType = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormType')
-            ->setConstructorArgs(array($this->type, array($this->extension1, $this->extension2), $this->parentResolvedType))
-            ->setMethods(array('getOptionsResolver'))
+            ->setConstructorArgs([$this->type, [$this->extension1, $this->extension2], $this->parentResolvedType])
+            ->setMethods(['getOptionsResolver'])
             ->getMock();
 
         $this->resolvedType->expects($this->once())
@@ -152,13 +152,13 @@ public function testCreateBuilder()
 
     public function testCreateBuilderWithDataClassOption()
     {
-        $givenOptions = array('data_class' => 'Foo');
-        $resolvedOptions = array('data_class' => '\stdClass');
+        $givenOptions = ['data_class' => 'Foo'];
+        $resolvedOptions = ['data_class' => '\stdClass'];
         $optionsResolver = $this->getMockBuilder('Symfony\Component\OptionsResolver\OptionsResolver')->getMock();
 
         $this->resolvedType = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormType')
-            ->setConstructorArgs(array($this->type, array($this->extension1, $this->extension2), $this->parentResolvedType))
-            ->setMethods(array('getOptionsResolver'))
+            ->setConstructorArgs([$this->type, [$this->extension1, $this->extension2], $this->parentResolvedType])
+            ->setMethods(['getOptionsResolver'])
             ->getMock();
 
         $this->resolvedType->expects($this->once())
@@ -190,7 +190,7 @@ public function testBuildForm()
             };
         };
 
-        $options = array('a' => 'Foo', 'b' => 'Bar');
+        $options = ['a' => 'Foo', 'b' => 'Bar'];
         $builder = $this->getMockBuilder('Symfony\Component\Form\Test\FormBuilderInterface')->getMock();
 
         // First the form is built for the super type
@@ -242,7 +242,7 @@ public function testCreateViewWithParent()
 
     public function testBuildView()
     {
-        $options = array('a' => '1', 'b' => '2');
+        $options = ['a' => '1', 'b' => '2'];
         $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
         $view = $this->getMockBuilder('Symfony\Component\Form\FormView')->getMock();
 
@@ -284,7 +284,7 @@ public function testBuildView()
 
     public function testFinishView()
     {
-        $options = array('a' => '1', 'b' => '2');
+        $options = ['a' => '1', 'b' => '2'];
         $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
         $view = $this->getMockBuilder('Symfony\Component\Form\FormView')->getMock();
 
@@ -347,14 +347,14 @@ public function testBlockPrefixDefaultsToFQCNIfNoName($typeClass, $blockPrefix)
 
     public function provideTypeClassBlockPrefixTuples()
     {
-        return array(
-            array(__NAMESPACE__.'\Fixtures\FooType', 'foo'),
-            array(__NAMESPACE__.'\Fixtures\Foo', 'foo'),
-            array(__NAMESPACE__.'\Fixtures\Type', 'type'),
-            array(__NAMESPACE__.'\Fixtures\FooBarHTMLType', 'foo_bar_html'),
-            array(__NAMESPACE__.'\Fixtures\Foo1Bar2Type', 'foo1_bar2'),
-            array(__NAMESPACE__.'\Fixtures\FBooType', 'f_boo'),
-        );
+        return [
+            [__NAMESPACE__.'\Fixtures\FooType', 'foo'],
+            [__NAMESPACE__.'\Fixtures\Foo', 'foo'],
+            [__NAMESPACE__.'\Fixtures\Type', 'type'],
+            [__NAMESPACE__.'\Fixtures\FooBarHTMLType', 'foo_bar_html'],
+            [__NAMESPACE__.'\Fixtures\Foo1Bar2Type', 'foo1_bar2'],
+            [__NAMESPACE__.'\Fixtures\FBooType', 'f_boo'],
+        ];
     }
 
     /**
@@ -362,7 +362,7 @@ public function provideTypeClassBlockPrefixTuples()
      */
     private function getMockFormType($typeClass = 'Symfony\Component\Form\AbstractType')
     {
-        return $this->getMockBuilder($typeClass)->setMethods(array('getBlockPrefix', 'configureOptions', 'finishView', 'buildView', 'buildForm'))->getMock();
+        return $this->getMockBuilder($typeClass)->setMethods(['getBlockPrefix', 'configureOptions', 'finishView', 'buildView', 'buildForm'])->getMock();
     }
 
     /**
@@ -370,7 +370,7 @@ private function getMockFormType($typeClass = 'Symfony\Component\Form\AbstractTy
      */
     private function getMockFormTypeExtension()
     {
-        return $this->getMockBuilder('Symfony\Component\Form\AbstractTypeExtension')->setMethods(array('getExtendedType', 'configureOptions', 'finishView', 'buildView', 'buildForm'))->getMock();
+        return $this->getMockBuilder('Symfony\Component\Form\AbstractTypeExtension')->setMethods(['getExtendedType', 'configureOptions', 'finishView', 'buildView', 'buildForm'])->getMock();
     }
 
     /**
@@ -387,7 +387,7 @@ private function getMockFormFactory()
      *
      * @return FormBuilder
      */
-    protected function getBuilder($name = 'name', array $options = array())
+    protected function getBuilder($name = 'name', array $options = [])
     {
         return new FormBuilder($name, null, $this->dispatcher, $this->factory, $options);
     }
diff --git a/src/Symfony/Component/Form/Tests/SimpleFormTest.php b/src/Symfony/Component/Form/Tests/SimpleFormTest.php
index 6ec6986e1885..ebc2ee03641c 100644
--- a/src/Symfony/Component/Form/Tests/SimpleFormTest.php
+++ b/src/Symfony/Component/Form/Tests/SimpleFormTest.php
@@ -43,7 +43,7 @@ class SimpleFormTest_Traversable implements \IteratorAggregate
 
     public function __construct($count)
     {
-        $this->iterator = new \ArrayIterator($count > 0 ? array_fill(0, $count, 'Foo') : array());
+        $this->iterator = new \ArrayIterator($count > 0 ? array_fill(0, $count, 'Foo') : []);
     }
 
     public function getIterator()
@@ -56,12 +56,12 @@ class SimpleFormTest extends AbstractFormTest
 {
     public function testDataIsInitializedToConfiguredValue()
     {
-        $model = new FixedDataTransformer(array(
+        $model = new FixedDataTransformer([
             'default' => 'foo',
-        ));
-        $view = new FixedDataTransformer(array(
+        ]);
+        $view = new FixedDataTransformer([
             'foo' => 'bar',
-        ));
+        ]);
 
         $config = new FormConfigBuilder('name', null, $this->dispatcher);
         $config->addViewTransformer($view);
@@ -80,12 +80,12 @@ public function testDataIsInitializedToConfiguredValue()
      */
     public function testDataTransformationFailure()
     {
-        $model = new FixedDataTransformer(array(
+        $model = new FixedDataTransformer([
             'default' => 'foo',
-        ));
-        $view = new FixedDataTransformer(array(
+        ]);
+        $view = new FixedDataTransformer([
             'foo' => 'bar',
-        ));
+        ]);
 
         $config = new FormConfigBuilder('name', null, $this->dispatcher);
         $config->addViewTransformer($view);
@@ -100,7 +100,7 @@ public function testDataTransformationFailure()
     public function testDataIsInitializedFromSubmit()
     {
         $mock = $this->getMockBuilder('\stdClass')
-            ->setMethods(array('preSetData', 'preSubmit'))
+            ->setMethods(['preSetData', 'preSubmit'])
             ->getMock();
         $mock->expects($this->at(0))
             ->method('preSetData');
@@ -108,8 +108,8 @@ public function testDataIsInitializedFromSubmit()
             ->method('preSubmit');
 
         $config = new FormConfigBuilder('name', null, $this->dispatcher);
-        $config->addEventListener(FormEvents::PRE_SET_DATA, array($mock, 'preSetData'));
-        $config->addEventListener(FormEvents::PRE_SUBMIT, array($mock, 'preSubmit'));
+        $config->addEventListener(FormEvents::PRE_SET_DATA, [$mock, 'preSetData']);
+        $config->addEventListener(FormEvents::PRE_SUBMIT, [$mock, 'preSubmit']);
         $form = new Form($config);
 
         // no call to setData() or similar where the object would be
@@ -122,7 +122,7 @@ public function testDataIsInitializedFromSubmit()
     public function testFalseIsConvertedToNull()
     {
         $mock = $this->getMockBuilder('\stdClass')
-            ->setMethods(array('preSubmit'))
+            ->setMethods(['preSubmit'])
             ->getMock();
         $mock->expects($this->once())
             ->method('preSubmit')
@@ -131,7 +131,7 @@ public function testFalseIsConvertedToNull()
             }));
 
         $config = new FormConfigBuilder('name', null, $this->dispatcher);
-        $config->addEventListener(FormEvents::PRE_SUBMIT, array($mock, 'preSubmit'));
+        $config->addEventListener(FormEvents::PRE_SUBMIT, [$mock, 'preSubmit']);
         $form = new Form($config);
 
         $form->submit(false);
@@ -145,8 +145,8 @@ public function testFalseIsConvertedToNull()
      */
     public function testSubmitThrowsExceptionIfAlreadySubmitted()
     {
-        $this->form->submit(array());
-        $this->form->submit(array());
+        $this->form->submit([]);
+        $this->form->submit([]);
     }
 
     public function testSubmitIsIgnoredIfDisabled()
@@ -207,13 +207,13 @@ public function testAlwaysDisabledIfParentDisabled($parentDisabled, $disabled, $
 
     public function getDisabledStates()
     {
-        r
17AE
eturn array(
+        return [
             // parent, button, result
-            array(true, true, true),
-            array(true, false, true),
-            array(false, true, true),
-            array(false, false, false),
-        );
+            [true, true, true],
+            [true, false, true],
+            [false, true, true],
+            [false, false, false],
+        ];
     }
 
     public function testGetRootReturnsRootOfParent()
@@ -235,7 +235,7 @@ public function testGetRootReturnsSelfIfNoParent()
 
     public function testEmptyIfEmptyArray()
     {
-        $this->form->setData(array());
+        $this->form->setData([]);
 
         $this->assertTrue($this->form->isEmpty());
     }
@@ -348,7 +348,7 @@ public function testHasNoErrors()
      */
     public function testSetParentThrowsExceptionIfAlreadySubmitted()
     {
-        $this->form->submit(array());
+        $this->form->submit([]);
         $this->form->setParent($this->getBuilder('parent')->getForm());
     }
 
@@ -370,7 +370,7 @@ public function testNotSubmitted()
      */
     public function testSetDataThrowsExceptionIfAlreadySubmitted()
     {
-        $this->form->submit(array());
+        $this->form->submit([]);
         $this->form->setData(null);
     }
 
@@ -397,19 +397,19 @@ public function testSetDataExecutesTransformationChain()
     {
         // use real event dispatcher now
         $form = $this->getBuilder('name', new EventDispatcher())
-            ->addEventSubscriber(new FixedFilterListener(array(
-                'preSetData' => array(
+            ->addEventSubscriber(new FixedFilterListener([
+                'preSetData' => [
                     'app' => 'filtered',
-                ),
-            )))
-            ->addModelTransformer(new FixedDataTransformer(array(
+                ],
+            ]))
+            ->addModelTransformer(new FixedDataTransformer([
                 '' => '',
                 'filtered' => 'norm',
-            )))
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ]))
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'norm' => 'client',
-            )))
+            ]))
             ->getForm();
 
         $form->setData('app');
@@ -422,14 +422,14 @@ public function testSetDataExecutesTransformationChain()
     public function testSetDataExecutesViewTransformersInOrder()
     {
         $form = $this->getBuilder()
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'first' => 'second',
-            )))
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ]))
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'second' => 'third',
-            )))
+            ]))
             ->getForm();
 
         $form->setData('first');
@@ -440,14 +440,14 @@ public function testSetDataExecutesViewTransformersInOrder()
     public function testSetDataExecutesModelTransformersInReverseOrder()
     {
         $form = $this->getBuilder()
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
                 '' => '',
                 'second' => 'third',
-            )))
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ]))
+            ->addModelTransformer(new FixedDataTransformer([
                 '' => '',
                 'first' => 'second',
-            )))
+            ]))
             ->getForm();
 
         $form->setData('first');
@@ -477,10 +477,10 @@ public function testSetDataConvertsScalarToStringIfNoTransformer()
     public function testSetDataConvertsScalarToStringIfOnlyModelTransformer()
     {
         $form = $this->getBuilder()
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
             '' => '',
             1 => 23,
-        )))
+        ]))
             ->getForm();
 
         $form->setData(1);
@@ -548,25 +548,25 @@ public function testSubmitExecutesTransformationChain()
     {
         // use real event dispatcher now
         $form = $this->getBuilder('name', new EventDispatcher())
-            ->addEventSubscriber(new FixedFilterListener(array(
-                'preSubmit' => array(
+            ->addEventSubscriber(new FixedFilterListener([
+                'preSubmit' => [
                     'client' => 'filteredclient',
-                ),
-                'onSubmit' => array(
+                ],
+                'onSubmit' => [
                     'norm' => 'filterednorm',
-                ),
-            )))
-            ->addViewTransformer(new FixedDataTransformer(array(
+                ],
+            ]))
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 // direction is reversed!
                 'norm' => 'filteredclient',
                 'filterednorm' => 'cleanedclient',
-            )))
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ]))
+            ->addModelTransformer(new FixedDataTransformer([
                 '' => '',
                 // direction is reversed!
                 'app' => 'filterednorm',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('client');
@@ -579,14 +579,14 @@ public function testSubmitExecutesTransformationChain()
     public function testSubmitExecutesViewTransformersInReverseOrder()
     {
         $form = $this->getBuilder()
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'third' => 'second',
-            )))
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ]))
+            ->addViewTransformer(new FixedDataTransformer
F41A
([
                 '' => '',
                 'second' => 'first',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('first');
@@ -597,14 +597,14 @@ public function testSubmitExecutesViewTransformersInReverseOrder()
     public function testSubmitExecutesModelTransformersInOrder()
     {
         $form = $this->getBuilder()
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
                 '' => '',
                 'second' => 'first',
-            )))
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ]))
+            ->addModelTransformer(new FixedDataTransformer([
                 '' => '',
                 'third' => 'second',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('first');
@@ -660,11 +660,11 @@ public function testEmptyDataCreatedBeforeTransforming()
     {
         $form = $this->getBuilder()
             ->setEmptyData('foo')
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 // direction is reversed!
                 'bar' => 'foo',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('');
@@ -682,11 +682,11 @@ public function testEmptyDataFromClosure()
 
                 return 'foo';
             })
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 // direction is reversed!
                 'bar' => 'foo',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('');
@@ -853,10 +853,10 @@ public function testViewDataMayBeObjectIfDataClassIsNull()
     {
         $object = new \stdClass();
         $config = new FormConfigBuilder('name', null, $this->dispatcher);
-        $config->addViewTransformer(new FixedDataTransformer(array(
+        $config->addViewTransformer(new FixedDataTransformer([
             '' => '',
             'foo' => $object,
-        )));
+        ]));
         $form = new Form($config);
 
         $form->setData('foo');
@@ -868,10 +868,10 @@ public function testViewDataMayBeArrayAccessIfDataClassIsNull()
     {
         $arrayAccess = $this->getMockBuilder('\ArrayAccess')->getMock();
         $config = new FormConfigBuilder('name', null, $this->dispatcher);
-        $config->addViewTransformer(new FixedDataTransformer(array(
+        $config->addViewTransformer(new FixedDataTransformer([
             '' => '',
             'foo' => $arrayAccess,
-        )));
+        ]));
         $form = new Form($config);
 
         $form->setData('foo');
@@ -885,10 +885,10 @@ public function testViewDataMayBeArrayAccessIfDataClassIsNull()
     public function testViewDataMustBeObjectIfDataClassIsSet()
     {
         $config = new FormConfigBuilder('name', 'stdClass', $this->dispatcher);
-        $config->addViewTransformer(new FixedDataTransformer(array(
+        $config->addViewTransformer(new FixedDataTransformer([
             '' => '',
-            'foo' => array('bar' => 'baz'),
-        )));
+            'foo' => ['bar' => 'baz'],
+        ]));
         $form = new Form($config);
 
         $form->setData('foo');
@@ -954,12 +954,12 @@ public function testFormInheritsParentData()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->setData('foo')
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
                 'foo' => 'norm[foo]',
-            )))
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ]))
+            ->addViewTransformer(new FixedDataTransformer([
                 'norm[foo]' => 'view[foo]',
-            )))
+            ]))
             ->add($child)
             ->getForm();
 
@@ -1046,7 +1046,7 @@ public function testSubmitIsNeverFiredIfInheritData()
     public function testInitializeSetsDefaultData()
     {
         $config = $this->getBuilder()->setData('DEFAULT')->getFormConfig();
-        $form = $this->getMockBuilder('Symfony\Component\Form\Form')->setMethods(array('setData'))->setConstructorArgs(array($config))->getMock();
+        $form = $this->getMockBuilder('Symfony\Component\Form\Form')->setMethods(['setData'])->setConstructorArgs([$config])->getMock();
 
         $form->expects($this->once())
             ->method('setData')
diff --git a/src/Symfony/Component/Form/Tests/Util/OrderedHashMapTest.php b/src/Symfony/Component/Form/Tests/Util/OrderedHashMapTest.php
index 8ce3f8fc82b8..01e76d87eb7e 100644
--- a/src/Symfony/Component/Form/Tests/Util/OrderedHashMapTest.php
+++ b/src/Symfony/Component/Form/Tests/Util/OrderedHashMapTest.php
@@ -43,7 +43,7 @@ public function testInsertStringKeys()
         $map['first'] = 1;
         $map['second'] = 2;
 
-        $this->assertSame(array('first' => 1, 'second' => 2), iterator_to_array($map));
+        $this->assertSame(['first' => 1, 'second' => 2], iterator_to_array($map));
     }
 
     public function testInsertNullKeys()
@@ -53,7 +53,7 @@ public function testInsertNullKeys()
         $map['foo'] = 2;
         $map[] = 3;
 
-        $this->assertSame(array(0 => 1, 'foo' => 2, 1 => 3), iterator_to_array($map));
+        $this->assertSame([0 => 1, 'foo' => 2, 1 => 3], iterator_to_array($map));
     }
 
     public function testInsertLooselyEqualKeys()
@@ -62,7 +62,7 @@ public function testInsertLooselyEqualKeys()
         $map['1 as a string'] = '1 as a string';
         $map[1] = 1;
 
-        $this->assertSame(array('1 as a string' => '1 as a string', 1 => 1), iterator_to_array($map));
+        $this->assertSame(['1 as a string' => '1 as a string', 1 => 1], iterator_to_array($map));
     }
 
     /**
@@ -83,7 +83,7 @@ public function testUpdateDoesNotChangeElementPosition()
         $map['second'] = 2;
         $map['first'] = 1;
 
-        $this->assertSame(array('first' => 1, 'second' => 2), iterator_to_array($map));
+        $this->assertSame(['first' => 1, 'second' => 2], iterator_to_array($map));
     }
 
     public function testIsset()
@@ -117,7 +117,7 @@ public function testUnset()
 
         unset($map['first']);
 
-        $this->assertSame(array('second' => 2), iterator_to_array($map));
+        $this->assertSame(['second' => 2], iterator_to_array($map));
     }
 
     public function testUnsetFromLooselyEqualKeysHashMap()
@@ -128,7 +128,7 @@ public function testUnsetFromLooselyEqualKeysHashMap()
 
         unset($map[1]);
 
-        $this->assertSame(array('1 as a string' => '1 as a string'), iterator_to_array($map));
+        $this->assertSame(['1 as a string' => '1 as a string'], iterator_to_array($map));
     }
 
     public function testUnsetNonExistingSucceeds()
@@ -138,7 +138,7 @@ public function testUnsetNonExistingSucceeds()
 
         unset($map['first']);
 
-        $this->assertSame(array('second' => 2), iterator_to_array($map));
+        $this->assertSame(['second' => 2], iterator_to_array($map));
     }
 
     public function testEmptyIteration()
@@ -154,7 +154,7 @@ public function testEmptyIteration()
 
     public function testIterationSupportsInsertion()
     {
-        $map = new OrderedHashMap(array('first' => 1));
+        $map = new OrderedHashMap(['first' => 1]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -185,7 +185,7 @@ public function testIterationSupportsInsertion()
 
     public function testIterationSupportsDeletionAndInsertion()
     {
-        $map = new OrderedHashMap(array('first' => 1, 'removed' => 2));
+        $map = new OrderedHashMap(['first' => 1, 'removed' => 2]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -217,7 +217,7 @@ public function testIterationSupportsDeletionAndInsertion()
 
     public function testIterationSupportsDeletionOfCurrentElement()
     {
-        $map = new OrderedHashMap(array('removed' => 1, 'next' => 2));
+        $map = new OrderedHashMap(['removed' => 1, 'next' => 2]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -247,7 +247,7 @@ public function testIterationSupportsDeletionOfCurrentElement()
 
     public function testIterationIgnoresReplacementOfCurrentElement()
     {
-        $map = new OrderedHashMap(array('replaced' => 1, 'next' => 2));
+        $map = new OrderedHashMap(['replaced' => 1, 'next' => 2]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -277,7 +277,7 @@ public function testIterationIgnoresReplacementOfCurrentElement()
 
     public function testIterationSupportsDeletionOfCurrentAndLastElement()
     {
-        $map = new OrderedHashMap(array('removed' => 1));
+        $map = new OrderedHashMap(['removed' => 1]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -301,7 +301,7 @@ public function testIterationSupportsDeletionOfCurrentAndLastElement()
 
     public function testIterationIgnoresReplacementOfCurrentAndLastElement()
     {
-        $map = new OrderedHashMap(array('replaced' => 1));
+        $map = new OrderedHashMap(['replaced' => 1]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -325,7 +325,7 @@ public function testIterationIgnoresReplacementOfCurrentAndLastElement()
 
     public function testIterationSupportsDeletionOfPreviousElement()
     {
-        $map = new OrderedHashMap(array('removed' => 1, 'next' => 2, 'onemore' => 3));
+        $map = new OrderedHashMap(['removed' => 1, 'next' => 2, 'onemore' => 3]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -361,7 +361,7 @@ public function testIterationSupportsDeletionOfPreviousElement()
 
     public function testIterationIgnoresReplacementOfPreviousElement()
     {
-        $map = new OrderedHashMap(array('replaced' => 1, 'next' => 2, 'onemore' => 3));
+        $map = new OrderedHashMap(['replaced' => 1, 'next' => 2, 'onemore' => 3]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -397,7 +397,7 @@ public function testIterationIgnoresReplacementOfPreviousElement()
 
     public function testIterationSupportsDeletionOfMultiplePreviousElements()
     {
-        $map = new OrderedHashMap(array('removed' => 1, 'alsoremoved' => 2, 'next' => 3, 'onemore' => 4));
+        $map = new OrderedHashMap(['removed' => 1, 'alsoremoved' => 2, 'next' => 3, 'onemore' => 4]);
         $it = $map->getIterator();
 
         $it->rewind();
@@ -439,7 +439,7 @@ public function testIterationSupportsDeletionOfMultiplePreviousElements()
 
     public function testParallelIteration()
     {
-        $map = new OrderedHashMap(array('first' => 1, 'second' => 2));
+        $map = new OrderedHashMap(['first' => 1, 'second' => 2]);
         $it1 = $map->getIterator();
         $it2 = $map->getIterator();
 
diff --git a/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php b/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
index 86c68ba3313d..1c723d16a097 100644
--- a/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
+++ b/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
@@ -42,38 +42,38 @@ public function testTrimUtf8Separators($hex)
 
     public function spaceProvider()
     {
-        return array(
+        return [
             // separators
-            array('0020'),
-            array('00A0'),
-            array('1680'),
+            ['0020'],
+            ['00A0'],
+            ['1680'],
 //            array('180E'),
-            array('2000'),
-            array('2001'),
-            array('2002'),
-            array('2003'),
-            array('2004'),
-            array('2005'),
-            array('2006'),
-            array('2007'),
-            array('2008'),
-            array('2009'),
-            array('200A'),
-            array('2028'),
-            array('2029'),
-            array('202F'),
-            array('205F'),
-            array('3000'),
+            ['2000'],
+            ['2001'],
+            ['2002'],
+            ['2003'],
+            ['2004'],
+            ['2005'],
+            ['2006'],
+            ['2007'],
+            ['2008'],
+            ['2009'],
+            ['200A'],
+            ['2028'],
+            ['2029'],
+            ['202F'],
+            ['205F'],
+            ['3000'],
             // controls
-            array('0009'),
-            array('000A'),
-            array('000B'),
-            array('000C'),
-            array('000D'),
-            array('0085'),
+            ['0009'],
+            ['000A'],
+            ['000B'],
+            ['000C'],
+            ['000D'],
+            ['0085'],
             // zero width space
 //            array('200B'),
-        );
+        ];
     }
 
     /**
@@ -88,18 +88,18 @@ public function testFqcnToBlockPrefix($fqcn, $expectedBlockPrefix)
 
     public function fqcnToBlockPrefixProvider()
     {
-        return array(
-            array('TYPE', 'type'),
-            array('\Type', 'type'),
-            array('\UserType', 'user'),
-            array('UserType', 'user'),
-            array('Vendor\Name\Space\Type', 'type'),
-            array('Vendor\Name\Space\UserForm', 'user_form'),
-            array('Vendor\Name\Space\UserType', 'user'),
-            array('Vendor\Name\Space\usertype', 'user'),
-            array('Symfony\Component\Form\Form', 'form'),
-            array('Vendor\Name\Space\BarTypeBazType', 'bar_type_baz'),
-            array('FooBarBazType', 'foo_bar_baz'),
-        );
+        return [
+            ['TYPE', 'type'],
+            ['\Type', 'type'],
+            ['\UserType', 'user'],
+            ['UserType', 'user'],
+            ['Vendor\Name\Space\Type', 'type'],
+            ['Vendor\Name\Space\UserForm', 'user_form'],
+            ['Vendor\Name\Space\UserType', 'user'],
+            ['Vendor\Name\Space\usertype', 'user'],
+            ['Symfony\Component\Form\Form', 'form'],
+            ['Vendor\Name\Space\BarTypeBazType', 'bar_type_baz'],
+            ['FooBarBazType', 'foo_bar_baz'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Util/OptionsResolverWrapper.php b/src/Symfony/Component/Form/Util/OptionsResolverWrapper.php
index 94a4fc111abc..a7c264759263 100644
--- a/src/Symfony/Component/Form/Util/OptionsResolverWrapper.php
+++ b/src/Symfony/Component/Form/Util/OptionsResolverWrapper.php
@@ -22,7 +22,7 @@
  */
 class OptionsResolverWrapper extends OptionsResolver
 {
-    private $undefined = array();
+    private $undefined = [];
 
     public function setNormalizer($option, \Closure $normalizer)
     {
@@ -79,7 +79,7 @@ public function addAllowedTypes($option, $allowedTypes)
         return $this;
     }
 
-    public function resolve(array $options = array())
+    public function resolve(array $options = [])
     {
         throw new AccessException('Resolve options is not supported.');
     }
diff --git a/src/Symfony/Component/Form/Util/OrderedHashMap.php b/src/Symfony/Component/Form/Util/OrderedHashMap.php
index 26e45a462250..19ec4fc7d2a2 100644
--- a/src/Symfony/Component/Form/Util/OrderedHashMap.php
+++ b/src/Symfony/Component/Form/Util/OrderedHashMap.php
@@ -71,28 +71,28 @@ class OrderedHashMap implements \ArrayAccess, \IteratorAggregate, \Countable
      *
      * @var array
      */
-    private $elements = array();
+    private $elements = [];
 
     /**
      * The keys of the map in the order in which they were inserted or changed.
      *
      * @var array
      */
-    private $orderedKeys = array();
+    private $orderedKeys = [];
 
     /**
      * References to the cursors of all open iterators.
      *
      * @var array
      */
-    private $managedCursors = array();
+    private $managedCursors = [];
 
     /**
      * Creates a new map.
      *
      * @param array $elements The elements to insert initially
      */
-    public function __construct(array $elements = array())
+    public function __construct(array $elements = [])
     {
         $this->elements = $elements;
         $this->orderedKeys = array_keys($elements);
@@ -125,7 +125,7 @@ public function offsetSet($key, $value)
     {
         if (null === $key || !isset($this->elements[$key])) {
             if (null === $key) {
-                $key = array() === $this->orderedKeys
+                $key = [] === $this->orderedKeys
                     // If the array is empty, use 0 as key
                     ? 0
                     // Imitate PHP behavior of generating a key that equals
diff --git a/src/Symfony/Component/Form/Util/OrderedHashMapIterator.php b/src/Symfony/Component/Form/Util/OrderedHashMapIterator.php
index 93a7caa58dab..c34bf2e39b13 100644
--- a/src/Symfony/Component/Form/Util/OrderedHashMapIterator.php
+++ b/src/Symfony/Component/Form/Util/OrderedHashMapIterator.php
@@ -120,7 +120,7 @@ public function key()
             return null;
         }
 
-        $array = array($this->key => null);
+        $array = [$this->key => null];
 
         return key($array);
     }
diff --git a/src/Symfony/Component/Form/Util/StringUtil.php b/src/Symfony/Component/Form/Util/StringUtil.php
index ee71ae7a52e1..241a66810b41 100644
--- a/src/Symfony/Component/Form/Util/StringUtil.php
+++ b/src/Symfony/Component/Form/Util/StringUtil.php
@@ -51,7 +51,7 @@ public static function fqcnToBlockPrefix($fqcn)
     {
         // Non-greedy ("+?") to match "type" suffix, if present
         if (preg_match('~([^\\\\]+?)(type)?$~i', $fqcn, $matches)) {
-            return strtolower(preg_replace(array('/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'), array('\\1_\\2', '\\1_\\2'), $matches[1]));
+            return strtolower(preg_replace(['/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'], ['\\1_\\2', '\\1_\\2'], $matches[1]));
         }
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/AcceptHeader.php b/src/Symfony/Component/HttpFoundation/AcceptHeader.php
index d1740266b7a8..968b71f5d2af 100644
--- a/src/Symfony/Component/HttpFoundation/AcceptHeader.php
+++ b/src/Symfony/Component/HttpFoundation/AcceptHeader.php
@@ -24,7 +24,7 @@ class AcceptHeader
     /**
      * @var AcceptHeaderItem[]
      */
-    private $items = array();
+    private $items = [];
 
     /**
      * @var bool
diff --git a/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php b/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
index c9506574de86..f6e896874319 100644
--- a/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
+++ b/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
@@ -21,13 +21,13 @@ class AcceptHeaderItem
     private $value;
     private $quality = 1.0;
     private $index = 0;
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @param string $value
      * @param array  $attributes
      */
-    public function __construct($value, array $attributes = array())
+    public function __construct($value, array $attributes = [])
     {
         $this->value = $value;
         foreach ($attributes as $name => $value) {
@@ -46,7 +46,7 @@ public static function fromString($itemValue)
     {
         $bits = preg_split('/\s*(?:;*("[^"]+");*|;*(\'[^\']+\');*|;+)\s*/', $itemValue, 0, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
         $value = array_shift($bits);
-        $attributes = array();
+        $attributes = [];
 
         $lastNullAttribute = null;
         foreach ($bits as $bit) {
diff --git a/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php b/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
index 97023278e0bf..557577a1ed6c 100644
--- a/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
+++ b/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
@@ -44,7 +44,7 @@ class BinaryFileResponse extends Response
      * @param bool                $autoEtag           Whether the ETag header should be automatically set
      * @param bool                $autoLastModified   Whether the Last-Modified header should be automatically set
      */
-    public function __construct($file, $status = 200, $headers = array(), $public = true, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
+    public function __construct($file, $status = 200, $headers = [], $public = true, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
     {
         parent::__construct(null, $status, $headers);
 
@@ -66,7 +66,7 @@ public function __construct($file, $status = 200, $headers = array(), $public =
      *
      * @return static
      */
-    public static function create($file = null, $status = 200, $headers = array(), $public = true, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
+    public static function create($file = null, $status = 200, $headers = [], $public = true, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
     {
         return new static($file, $status, $headers, $public, $contentDisposition, $autoEtag, $autoLastModified);
     }
@@ -239,7 +239,7 @@ public function prepare(Request $request)
             if (!$request->headers->has('If-Range') || $this->hasValidIfRangeHeader($request->headers->get('If-Range'))) {
                 $range = $request->headers->get('Range');
 
-                list($start, $end) = explode('-', substr($range, 6), 2) + array(0);
+                list($start, $end) = explode('-', substr($range, 6), 2) + [0];
 
                 $end = ('' === $end) ? $fileSize - 1 : (int) $end;
 
diff --git a/src/Symfony/Component/HttpFoundation/Cookie.php b/src/Symfony/Component/HttpFoundation/Cookie.php
index c38aa409da08..e61619aa6dd9 100644
--- a/src/Symfony/Component/HttpFoundation/Cookie.php
+++ b/src/Symfony/Component/HttpFoundation/Cookie.php
@@ -41,7 +41,7 @@ class Cookie
      */
     public static function fromString($cookie, $decode = false)
     {
-        $data = array(
+        $data = [
             'expires' => 0,
             'path' => '/',
             'domain' => null,
@@ -49,7 +49,7 @@ public static function fromString($cookie, $decode = false)
             'httponly' => false,
             'raw' => !$decode,
             'samesite' => null,
-        );
+        ];
         foreach (explode(';', $cookie) as $part) {
             if (false === strpos($part, '=')) {
                 $key = trim($part);
@@ -128,7 +128,7 @@ public function __construct($name, $value = null, $expire = 0, $path = '/', $dom
             $sameSite = strtolower($sameSite);
         }
 
-        if (!\in_array($sameSite, array(self::SAMESITE_LAX, self::SAMESITE_STRICT, null), true)) {
+        if (!\in_array($sameSite, [self::SAMESITE_LAX, self::SAMESITE_STRICT, null], true)) {
             throw new \InvalidArgumentException('The "sameSite" parameter value is not valid.');
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/ExpressionRequestMatcher.php b/src/Symfony/Component/HttpFoundation/ExpressionRequestMatcher.php
index e9c8441ce314..26bed7d3713e 100644
--- a/src/Symfony/Component/HttpFoundation/ExpressionRequestMatcher.php
+++ b/src/Symfony/Component/HttpFoundation/ExpressionRequestMatcher.php
@@ -35,13 +35,13 @@ public function matches(Request $request)
             throw new \LogicException('Unable to match the request as the expression language is not available.');
         }
 
-        return $this->language->evaluate($this->expression, array(
+        return $this->language->evaluate($this->expression, [
             'request' => $request,
             'method' => $request->getMethod(),
             'path' => rawurldecode($request->getPathInfo()),
             'host' => $request->getHost(),
             'ip' => $request->getClientIp(),
             'attributes' => $request->attributes->all(),
-        )) && parent::matches($request);
+        ]) && parent::matches($request);
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/File/MimeType/ExtensionGuesser.php b/src/Symfony/Component/HttpFoundation/File/MimeType/ExtensionGuesser.php
index 263fb321c574..80f4d47f767c 100644
--- a/src/Symfony/Component/HttpFoundation/File/MimeType/ExtensionGuesser.php
+++ b/src/Symfony/Component/HttpFoundation/File/MimeType/ExtensionGuesser.php
@@ -37,7 +37,7 @@ class ExtensionGuesser implements ExtensionGuesserInterface
      *
      * @var array
      */
-    protected $guessers = array();
+    protected $guessers = [];
 
     /**
      * Returns the singleton instance.
diff --git a/src/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeGuesser.php b/src/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeGuesser.php
index dae47a7c023d..95d1ee26762a 100644
--- a/src/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeGuesser.php
+++ b/src/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeGuesser.php
@@ -51,7 +51,7 @@ class MimeTypeGuesser implements MimeTypeGuesserInterface
      *
      * @var array
      */
-    protected $guessers = array();
+    protected $guessers = [];
 
     /**
      * Returns the singleton instance.
diff --git a/src/Symfony/Component/HttpFoundation/File/UploadedFile.php b/src/Symfony/Component/HttpFoundation/File/UploadedFile.php
index de6ce75cc94b..a44c664b4c6e 100644
--- a/src/Symfony/Component/HttpFoundation/File/UploadedFile.php
+++ b/src/Symfony/Component/HttpFoundation/File/UploadedFile.php
@@ -249,7 +249,7 @@ public static function getMaxFilesize()
      */
     public function getErrorMessage()
     {
-        static $errors = array(
+        static $errors = [
             UPLOAD_ERR_INI_SIZE => 'The file "%s" exceeds your upload_max_filesize ini directive (limit is %d KiB).',
             UPLOAD_ERR_FORM_SIZE => 'The file "%s" exceeds the upload limit defined in your form.',
             UPLOAD_ERR_PARTIAL => 'The file "%s" was only partially uploaded.',
@@ -257,7 +257,7 @@ public function getErrorMessage()
             UPLOAD_ERR_CANT_WRITE => 'The file "%s" could not be written on disk.',
             UPLOAD_ERR_NO_TMP_DIR => 'File could not be uploaded: missing temporary directory.',
             UPLOAD_ERR_EXTENSION => 'File upload was stopped by a PHP extension.',
-        );
+        ];
 
         $errorCode = $this->error;
         $maxFilesize = UPLOAD_ERR_INI_SIZE === $errorCode ? self::getMaxFilesize() / 1024 : 0;
diff --git a/src/Symfony/Component/HttpFoundation/FileBag.php b/src/Symfony/Component/HttpFoundation/FileBag.php
index c135ad641248..ca849b3d7baf 100644
--- a/src/Symfony/Component/HttpFoundation/FileBag.php
+++ b/src/Symfony/Component/HttpFoundation/FileBag.php
@@ -21,12 +21,12 @@
  */
 class FileBag extends ParameterBag
 {
-    private static $fileKeys = array('error', 'name', 'size', 'tmp_name', 'type');
+    private static $fileKeys = ['error', 'name', 'size', 'tmp_name', 'type'];
 
     /**
      * @param array $parameters An array of HTTP files
      */
-    public function __construct(array $parameters = array())
+    public function __construct(array $parameters = [])
     {
         $this->replace($parameters);
     }
@@ -34,9 +34,9 @@ public function __construct(array $parameters = array())
     /**
      * {@inheritdoc}
      */
-    public function replace(array $files = array())
+    public function replace(array $files = [])
     {
-        $this->parameters = array();
+        $this->parameters = [];
         $this->add($files);
     }
 
@@ -55,7 +55,7 @@ public function set($key, $value)
     /**
      * {@inheritdoc}
      */
-    public function add(array $files = array())
+    public function add(array $files = [])
     {
         foreach ($files as $key => $file) {
             $this->set($key, $file);
@@ -87,7 +87,7 @@ protected function convertFileInformation($file)
                     $file = new UploadedFile($file['tmp_name'], $file['name'], $file['type'], $file['size'], $file['error']);
                 }
             } else {
-                $file = array_map(array($this, 'convertFileInformation'), $file);
+                $file = array_map([$this, 'convertFileInformation'], $file);
                 if (array_keys($keys) === $keys) {
                     $file = array_filter($file);
                 }
@@ -130,13 +130,13 @@ protected function fixPhpFilesArray($data)
         }
 
         foreach ($data['name'] as $key => $name) {
-            $files[$key] = $this->fixPhpFilesArray(array(
+            $files[$key] = $this->fixPhpFilesArray([
                 'error' => $data['error'][$key],
                 'name' => $name,
                 'type' => $data['type'][$key],
                 'tmp_name' => $data['tmp_name'][$key],
                 'size' => $data['size'][$key],
-            ));
+            ]);
         }
 
         return $files;
diff --git a/src/Symfony/Component/HttpFoundation/HeaderBag.php b/src/Symfony/Component/HttpFoundation/HeaderBag.php
index 230253663ccf..937afe6b7acd 100644
--- a/src/Symfony/Component/HttpFoundation/HeaderBag.php
+++ b/src/Symfony/Component/HttpFoundation/HeaderBag.php
@@ -18,13 +18,13 @@
  */
 class HeaderBag implements \IteratorAggregate, \Countable
 {
-    protected $headers = array();
-    protected $cacheControl = array();
+    protected $headers = [];
+    protected $cacheControl = [];
 
     /**
      * @param array $headers An array of HTTP headers
      */
-    public function __construct(array $headers = array())
+    public function __construct(array $headers = [])
     {
         foreach ($headers as $key => $values) {
             $this->set($key, $values);
@@ -80,9 +80,9 @@ public function keys()
      *
      * @param array $headers An array of HTTP headers
      */
-    public function replace(array $headers = array())
+    public function replace(array $headers = [])
     {
-        $this->headers = array();
+        $this->headers = [];
         $this->add($headers);
     }
 
@@ -114,10 +114,10 @@ public function get($key, $default = null, $first = true)
 
         if (!array_key_exists($key, $headers)) {
             if (null === $default) {
-                return $first ? null : array();
+                return $first ? null : [];
             }
 
-            return $first ? $default : array($default);
+            return $first ? $default : [$default];
         }
 
         if ($first) {
@@ -148,7 +148,7 @@ public function set($key, $values, $replace = true)
             }
         } else {
             if (true === $replace || !isset($this->headers[$key])) {
-                $this->headers[$key] = array($values);
+                $this->headers[$key] = [$values];
             } else {
                 $this->headers[$key][] = $values;
             }
@@ -196,7 +196,7 @@ public function remove($key)
         unset($this->headers[$key]);
 
         if ('cache-control' === $key) {
-            $this->cacheControl = array();
+            $this->cacheControl = [];
         }
     }
 
@@ -294,7 +294,7 @@ public function count()
 
     protected function getCacheControlHeader()
     {
-        $parts = array();
+        $parts = [];
         ksort($this->cacheControl);
         foreach ($this->cacheControl as $key => $value) {
             if (true === $value) {
@@ -320,7 +320,7 @@ protected function getCacheControlHeader()
      */
     protected function parseCacheControl($header)
     {
-        $cacheControl = array();
+        $cacheControl = [];
         preg_match_all('#([a-zA-Z][a-zA-Z_-]*)\s*(?:=(?:"([^"]*)"|([^ \t",;]*)))?#', $header, $matches, PREG_SET_ORDER);
         foreach ($matches as $match) {
             $cacheControl[strtolower($match[1])] = isset($match[3]) ? $match[3] : (isset($match[2]) ? $match[2] : true);
diff --git a/src/Symfony/Component/HttpFoundation/IpUtils.php b/src/Symfony/Component/HttpFoundation/IpUtils.php
index a1bfa90885dc..67d13e57aafc 100644
--- a/src/Symfony/Component/HttpFoundation/IpUtils.php
+++ b/src/Symfony/Component/HttpFoundation/IpUtils.php
@@ -18,7 +18,7 @@
  */
 class IpUtils
 {
-    private static $checkedIps = array();
+    private static $checkedIps = [];
 
     /**
      * This class should not be instantiated.
@@ -38,7 +38,7 @@ private function __construct()
     public static function checkIp($requestIp, $ips)
     {
         if (!\is_array($ips)) {
-            $ips = array($ips);
+            $ips = [$ips];
         }
 
         $method = substr_count($requestIp, ':') > 1 ? 'checkIp6' : 'checkIp4';
diff --git a/src/Symfony/Component/HttpFoundation/JsonResponse.php b/src/Symfony/Component/HttpFoundation/JsonResponse.php
index d741ce099d73..6fb32ee41bda 100644
--- a/src/Symfony/Component/HttpFoundation/JsonResponse.php
+++ b/src/Symfony/Component/HttpFoundation/JsonResponse.php
@@ -39,7 +39,7 @@ class JsonResponse extends Response
      * @param array $headers An array of response headers
      * @param bool  $json    If the data is already a JSON string
      */
-    public function __construct($data = null, $status = 200, $headers = array(), $json = false)
+    public function __construct($data = null, $status = 200, $headers = [], $json = false)
     {
         parent::__construct('', $status, $headers);
 
@@ -64,7 +64,7 @@ public function __construct($data = null, $status = 200, $headers = array(), $js
      *
      * @return static
      */
-    public static function create($data = null, $status = 200, $headers = array())
+    public static function create($data = null, $status = 200, $headers = [])
     {
         return new static($data, $status, $headers);
     }
@@ -72,7 +72,7 @@ public static function create($data = null, $status = 200, $headers = array())
     /**
      * Make easier the creation of JsonResponse from raw json.
      */
-    public static function fromJsonString($data = null, $status = 200, $headers = array())
+    public static function fromJsonString($data = null, $status = 200, $headers = [])
     {
         return new static($data, $status, $headers, true);
     }
@@ -94,11 +94,11 @@ public function setCallback($callback = null)
             //      JsonpCallbackValidator is released under the MIT License. See https://github.com/willdurand/JsonpCallbackValidator/blob/v1.1.0/LICENSE for details.
             //      (c) William Durand <william.durand1@gmail.com>
             $pattern = '/^[$_\p{L}][$_\p{L}\p{Mn}\p{Mc}\p{Nd}\p{Pc}\x{200C}\x{200D}]*(?:\[(?:"(?:\\\.|[^"\\\])*"|\'(?:\\\.|[^\'\\\])*\'|\d+)\])*?$/u';
-            $reserved = array(
+            $reserved = [
                 'break', 'do', 'instanceof', 'typeof', 'case', 'else', 'new', 'var', 'catch', 'finally', 'return', 'void', 'continue', 'for', 'switch', 'while',
                 'debugger', 'function', 'this', 'with', 'default', 'if', 'throw', 'delete', 'in', 'try', 'class', 'enum', 'extends', 'super',  'const', 'export',
                 'import', 'implements', 'let', 'private', 'public', 'yield', 'interface', 'package', 'protected', 'static', 'null', 'true', 'false',
-            );
+            ];
             $parts = explode('.', $callback);
             foreach ($parts as $part) {
                 if (!preg_match($pattern, $part) || \in_array($part, $reserved, true)) {
@@ -137,7 +137,7 @@ public function setJson($json)
      *
      * @throws \InvalidArgumentException
      */
-    public function setData($data = array())
+    public function setData($data = [])
     {
         if (\defined('HHVM_VERSION')) {
             // HHVM does not trigger any warnings and let exceptions
diff --git a/src/Symfony/Component/HttpFoundation/ParameterBag.php b/src/Symfony/Component/HttpFoundation/ParameterBag.php
index 19d7ee913a25..3c6ba46a6a08 100644
--- a/src/Symfony/Component/HttpFoundation/ParameterBag.php
+++ b/src/Symfony/Component/HttpFoundation/ParameterBag.php
@@ -26,7 +26,7 @@ class ParameterBag implements \IteratorAggregate, \Countable
     /**
      * @param array $parameters An array of parameters
      */
-    public function __construct(array $parameters = array())
+    public function __construct(array $parameters = [])
     {
         $this->parameters = $parameters;
     }
@@ -56,7 +56,7 @@ public function keys()
      *
      * @param array $parameters An array of parameters
      */
-    public function replace(array $parameters = array())
+    public function replace(array $parameters = [])
     {
         $this->parameters = $parameters;
     }
@@ -66,7 +66,7 @@ public function replace(array $parameters = array())
      *
      * @param array $parameters An array of parameters
      */
-    public function add(array $parameters = array())
+    public function add(array $parameters = [])
     {
         $this->parameters = array_replace($this->parameters, $parameters);
     }
@@ -154,7 +154,7 @@ public function getAlnum($key, $default = '')
     public function getDigits($key, $default = '')
     {
         // we need to remove - and + because they're allowed in the filter
-        return str_replace(array('-', '+'), '', $this->filter($key, $default, FILTER_SANITIZE_NUMBER_INT));
+        return str_replace(['-', '+'], '', $this->filter($key, $default, FILTER_SANITIZE_NUMBER_INT));
     }
 
     /**
@@ -195,13 +195,13 @@ public function getBoolean($key, $default = false)
      *
      * @return mixed
      */
-    public function filter($key, $default = null, $filter = FILTER_DEFAULT, $options = array())
+    public function filter($key, $default = null, $filter = FILTER_DEFAULT, $options = [])
     {
         $value = $this->get($key, $default);
 
         // Always turn $options into an array - this allows filter_var option shortcuts.
         if (!\is_array($options) && $options) {
-            $options = array('flags' => $options);
+            $options = ['flags' => $options];
         }
 
         // Add a convenience check for arrays.
diff --git a/src/Symfony/Component/HttpFoundation/RedirectResponse.php b/src/Symfony/Component/HttpFoundation/RedirectResponse.php
index 01681dcdf787..970d82b5a29a 100644
--- a/src/Symfony/Component/HttpFoundation/RedirectResponse.php
+++ b/src/Symfony/Component/HttpFoundation/RedirectResponse.php
@@ -32,7 +32,7 @@ class RedirectResponse extends Response
      *
      * @see http://tools.ietf.org/html/rfc2616#section-10.3
      */
-    public function __construct($url, $status = 302, $headers = array())
+    public function __construct($url, $status = 302, $headers = [])
     {
         parent::__construct('', $status, $headers);
 
@@ -56,7 +56,7 @@ public function __construct($url, $status = 302, $headers = array())
      *
      * @return static
      */
-    public static function create($url = '', $status = 302, $headers = array())
+    public static function create($url = '', $status = 302, $headers = [])
     {
         return new static($url, $status, $headers);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index 10687e35c901..8dc01b91ea71 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -61,17 +61,17 @@ class Request
     /**
      * @var string[]
      */
-    protected static $trustedProxies = array();
+    protected static $trustedProxies = [];
 
     /**
      * @var string[]
      */
-    protected static $trustedHostPatterns = array();
+    protected static $trustedHostPatterns = [];
 
     /**
      * @var string[]
      */
-    protected static $trustedHosts = array();
+    protected static $trustedHosts = [];
 
     /**
      * Names for headers that can be trusted when
@@ -84,13 +84,13 @@ class Request
      *
      * @deprecated since version 3.3, to be removed in 4.0
      */
-    protected static $trustedHeaders = array(
+    protected static $trustedHeaders = [
         self::HEADER_FORWARDED => 'FORWARDED',
         self::HEADER_CLIENT_IP => 'X_FORWARDED_FOR',
         self::HEADER_CLIENT_HOST => 'X_FORWARDED_HOST',
         self::HEADER_CLIENT_PROTO => 'X_FORWARDED_PROTO',
         self::HEADER_CLIENT_PORT => 'X_FORWARDED_PORT',
-    );
+    ];
 
     protected static $httpMethodParameterOverride = false;
 
@@ -226,20 +226,20 @@ class Request
     private static $trustedHeaderSet = -1;
 
     /** @deprecated since version 3.3, to be removed in 4.0 */
-    private static $trustedHeaderNames = array(
+    private static $trustedHeaderNames = [
         self::HEADER_FORWARDED => 'FORWARDED',
         self::HEADER_CLIENT_IP => 'X_FORWARDED_FOR',
         self::HEADER_CLIENT_HOST => 'X_FORWARDED_HOST',
         self::HEADER_CLIENT_PROTO => 'X_FORWARDED_PROTO',
         self::HEADER_CLIENT_PORT => 'X_FORWARDED_PORT',
-    );
+    ];
 
-    private static $forwardedParams = array(
+    private static $forwardedParams = [
         self::HEADER_X_FORWARDED_FOR => 'for',
         self::HEADER_X_FORWARDED_HOST => 'host',
         self::HEADER_X_FORWARDED_PROTO => 'proto',
         self::HEADER_X_FORWARDED_PORT => 'host',
-    );
+    ];
 
     /**
      * @param array                $query      The GET parameters
@@ -250,7 +250,7 @@ class Request
      * @param array                $server     The SERVER parameters
      * @param string|resource|null $content    The raw body data
      */
-    public function __construct(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    public function __construct(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         $this->initialize($query, $request, $attributes, $cookies, $files, $server, $content);
     }
@@ -268,7 +268,7 @@ public function __construct(array $query = array(), array $request = array(), ar
      * @param array                $server     The SERVER parameters
      * @param string|resource|null $content    The raw body data
      */
-    public function initialize(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    public function initialize(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         $this->request = new ParameterBag($request);
         $this->query = new ParameterBag($query);
@@ -311,10 +311,10 @@ public static function createFromGlobals()
             }
         }
 
-        $request = self::createRequestFromFactory($_GET, $_POST, array(), $_COOKIE, $_FILES, $server);
+        $request = self::createRequestFromFactory($_GET, $_POST, [], $_COOKIE, $_FILES, $server);
 
         if (0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded')
-            && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), array('PUT', 'DELETE', 'PATCH'))
+            && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), ['PUT', 'DELETE', 'PATCH'])
         ) {
             parse_str($request->getContent(), $data);
             $request->request = new ParameterBag($data);
@@ -339,9 +339,9 @@ public static function createFromGlobals()
      *
      * @return static
      */
-    public static function create($uri, $method = 'GET', $parameters = array(), $cookies = array(), $files = array(), $server = array(), $content = null)
+    public static function create($uri, $method = 'GET', $parameters = [], $cookies = [], $files = [], $server = [], $content = null)
     {
-        $server = array_replace(array(
+        $server = array_replace([
             'SERVER_NAME' => 'localhost',
             'SERVER_PORT' => 80,
             'HTTP_HOST' => 'localhost',
@@ -354,7 +354,7 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
             'SCRIPT_FILENAME' => '',
             'SERVER_PROTOCOL' => 'HTTP/1.1',
             'REQUEST_TIME' => time(),
-        ), $server);
+        ], $server);
 
         $server['PATH_INFO'] = '';
         $server['REQUEST_METHOD'] = strtoupper($method);
@@ -402,10 +402,10 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
                 // no break
             case 'PATCH':
                 $request = $parameters;
-                $query = array();
+                $query = [];
                 break;
             default:
-                $request = array();
+                $request = [];
                 $query = $parameters;
                 break;
         }
@@ -428,7 +428,7 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
         $server['REQUEST_URI'] = $components['path'].('' !== $queryString ? '?'.$queryString : '');
         $server['QUERY_STRING'] = $queryString;
 
-        return self::createRequestFromFactory($query, $request, array(), $cookies, $files, $server, $content);
+        return self::createRequestFromFactory($query, $request, [], $cookies, $files, $server, $content);
     }
 
     /**
@@ -532,7 +532,7 @@ public function __toString()
         }
 
         $cookieHeader = '';
-        $cookies = array();
+        $cookies = [];
 
         foreach ($this->cookies as $k => $v) {
             $cookies[] = $k.'='.$v;
@@ -566,19 +566,19 @@ public function overrideGlobals()
 
         foreach ($this->headers->all() as $key => $value) {
             $key = strtoupper(str_replace('-', '_', $key));
-            if (\in_array($key, array('CONTENT_TYPE', 'CONTENT_LENGTH'))) {
+            if (\in_array($key, ['CONTENT_TYPE', 'CONTENT_LENGTH'])) {
                 $_SERVER[$key] = implode(', ', $value);
             } else {
                 $_SERVER['HTTP_'.$key] = implode(', ', $value);
             }
         }
 
-        $request = array('g' => $_GET, 'p' => $_POST, 'c' => $_COOKIE);
+        $request = ['g' => $_GET, 'p' => $_POST, 'c' => $_COOKIE];
 
         $requestOrder = ini_get('request_order') ?: ini_get('variables_order');
         $requestOrder = preg_replace('#[^cgp]#', '', strtolower($requestOrder)) ?: 'gp';
 
-        $_REQUEST = array();
+        $_REQUEST = [];
         foreach (str_split($requestOrder) as $order) {
             $_REQUEST = array_merge($_REQUEST, $request[$order]);
         }
@@ -644,7 +644,7 @@ public static function setTrustedHosts(array $hostPatterns)
             return sprintf('{%s}i', $hostPattern);
         }, $hostPatterns);
         // we need to reset trusted hosts on trusted host patterns change
-        self::$trustedHosts = array();
+        self::$trustedHosts = [];
     }
 
     /**
@@ -745,8 +745,8 @@ public static function normalizeQueryString($qs)
             return '';
         }
 
-        $parts = array();
-        $order = array();
+        $parts = [];
+        $order = [];
 
         foreach (explode('&', $qs) as $param) {
             if ('' === $param || '=' === $param[0]) {
@@ -893,10 +893,10 @@ public function getClientIps()
         $ip = $this->server->get('REMOTE_ADDR');
 
         if (!$this->isFromTrustedProxy()) {
-            return array($ip);
+            return [$ip];
         }
 
-        return $this->getTrustedValues(self::HEADER_CLIENT_IP, $ip) ?: array($ip);
+        return $this->getTrustedValues(self::HEADER_CLIENT_IP, $ip) ?: [$ip];
     }
 
     /**
@@ -1242,7 +1242,7 @@ public function getQueryString()
     public function isSecure()
     {
         if ($this->isFromTrustedProxy() && $proto = $this->getTrustedValues(self::HEADER_CLIENT_PROTO)) {
-            return \in_array(strtolower($proto[0]), array('https', 'on', 'ssl', '1'), true);
+            return \in_array(strtolower($proto[0]), ['https', 'on', 'ssl', '1'], true);
         }
 
         $https = $this->server->get('HTTPS');
@@ -1405,7 +1405,7 @@ public static function getMimeTypes($format)
             static::initializeFormats();
         }
 
-        return isset(static::$formats[$format]) ? static::$formats[$format] : array();
+        return isset(static::$formats[$format]) ? static::$formats[$format] : [];
     }
 
     /**
@@ -1448,7 +1448,7 @@ public function setFormat($format, $mimeTypes)
             static::initializeFormats();
         }
 
-        static::$formats[$format] = \is_array($mimeTypes) ? $mimeTypes : array($mimeTypes);
+        static::$formats[$format] = \is_array($mimeTypes) ? $mimeTypes : [$mimeTypes];
     }
 
     /**
@@ -1565,10 +1565,10 @@ public function isMethodSafe(/* $andCacheable = true */)
             // then setting $andCacheable to false should be deprecated in 4.1
             @trigger_error('Checking only for cacheable HTTP methods with Symfony\Component\HttpFoundation\Request::isMethodSafe() is deprecated since Symfony 3.2 and will throw an exception in 4.0. Disable checking only for cacheable methods by calling the method with `false` as first argument or use the Request::isMethodCacheable() instead.', E_USER_DEPRECATED);
 
-            return \in_array($this->getMethod(), array('GET', 'HEAD'));
+            return \in_array($this->getMethod(), ['GET', 'HEAD']);
         }
 
-        return \in_array($this->getMethod(), array('GET', 'HEAD', 'OPTIONS', 'TRACE'));
+        return \in_array($this->getMethod(), ['GET', 'HEAD', 'OPTIONS', 'TRACE']);
     }
 
     /**
@@ -1578,7 +1578,7 @@ public function isMethodSafe(/* $andCacheable = true */)
      */
     public function isMethodIdempotent()
     {
-        return \in_array($this->getMethod(), array('HEAD', 'GET', 'PUT', 'DELETE', 'TRACE', 'OPTIONS', 'PURGE'));
+        return \in_array($this->getMethod(), ['HEAD', 'GET', 'PUT', 'DELETE', 'TRACE', 'OPTIONS', 'PURGE']);
     }
 
     /**
@@ -1590,7 +1590,7 @@ public function isMethodIdempotent()
      */
     public function isMethodCacheable()
     {
-        return \in_array($this->getMethod(), array('GET', 'HEAD'));
+        return \in_array($this->getMethod(), ['GET', 'HEAD']);
     }
 
     /**
@@ -1704,7 +1704,7 @@ public function getPreferredLanguage(array $locales = null)
             return $locales[0];
         }
 
-        $extendedPreferredLanguages = array();
+        $extendedPreferredLanguages = [];
         foreach ($preferredLanguages as $language) {
             $extendedPreferredLanguages[] = $language;
             if (false !== $position = strpos($language, '_')) {
@@ -1732,7 +1732,7 @@ public function getLanguages()
         }
 
         $languages = AcceptHeader::fromString($this->headers->get('Accept-Language'))->all();
-        $this->languages = array();
+        $this->languages = [];
         foreach ($languages as $lang => $acceptHeaderItem) {
             if (false !== strpos($lang, '-')) {
                 $codes = explode('-', $lang);
@@ -2002,19 +2002,19 @@ protected function preparePathInfo()
      */
     protected static function initializeFormats()
     {
-        static::$formats = array(
-            'html' => array('text/html', 'application/xhtml+xml'),
-            'txt' => array('text/plain'),
-            'js' => array('application/javascript', 'application/x-javascript', 'text/javascript'),
-            'css' => array('text/css'),
-            'json' => array('application/json', 'application/x-json'),
-            'jsonld' => array('application/ld+json'),
-            'xml' => array('text/xml', 'application/xml', 'application/x-xml'),
-            'rdf' => array('application/rdf+xml'),
-            'atom' => array('application/atom+xml'),
-            'rss' => array('application/rss+xml'),
-            'form' => array('application/x-www-form-urlencoded'),
-        );
+        static::$formats = [
+            'html' => ['text/html', 'application/xhtml+xml'],
+            'txt' => ['text/plain'],
+            'js' => ['application/javascript', 'application/x-javascript', 'text/javascript'],
+            'css' => ['text/css'],
+            'json' => ['application/json', 'application/x-json'],
+            'jsonld' => ['application/ld+json'],
+            'xml' => ['text/xml', 'application/xml', 'application/x-xml'],
+            'rdf' => ['application/rdf+xml'],
+            'atom' => ['application/atom+xml'],
+            'rss' => ['application/rss+xml'],
+            'form' => ['application/x-www-form-urlencoded'],
+        ];
     }
 
     /**
@@ -2059,7 +2059,7 @@ private function getUrlencodedPrefix($string, $prefix)
         return false;
     }
 
-    private static function createRequestFromFactory(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    private static function createRequestFromFactory(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         if (self::$requestFactory) {
             $request = \call_user_func(self::$requestFactory, $query, $request, $attributes, $cookies, $files, $server, $content);
@@ -2089,8 +2089,8 @@ public function isFromTrustedProxy()
 
     private function getTrustedValues($type, $ip = null)
     {
-        $clientValues = array();
-        $forwardedValues = array();
+        $clientValues = [];
+        $forwardedValues = [];
 
         if (self::$trustedHeaders[$type] && $this->headers->has(self::$trustedHeaders[$type])) {
             foreach (explode(',', $this->headers->get(self::$trustedHeaders[$type])) as $v) {
@@ -2100,7 +2100,7 @@ private function getTrustedValues($type, $ip = null)
 
         if (self::$trustedHeaders[self::HEADER_FORWARDED] && $this->headers->has(self::$trustedHeaders[self::HEADER_FORWARDED])) {
             $forwardedValues = $this->headers->get(self::$trustedHeaders[self::HEADER_FORWARDED]);
-            $forwardedValues = preg_match_all(sprintf('{(?:%s)="?([a-zA-Z0-9\.:_\-/\[\]]*+)}', self::$forwardedParams[$type]), $forwardedValues, $matches) ? $matches[1] : array();
+            $forwardedValues = preg_match_all(sprintf('{(?:%s)="?([a-zA-Z0-9\.:_\-/\[\]]*+)}', self::$forwardedParams[$type]), $forwardedValues, $matches) ? $matches[1] : [];
             if (self::HEADER_CLIENT_PORT === $type) {
                 foreach ($forwardedValues as $k => $v) {
                     if (']' === substr($v, -1) || false === $v = strrchr($v, ':')) {
@@ -2125,7 +2125,7 @@ private function getTrustedValues($type, $ip = null)
         }
 
         if (!$this->isForwardedValid) {
-            return null !== $ip ? array('0.0.0.0', $ip) : array();
+            return null !== $ip ? ['0.0.0.0', $ip] : [];
         }
         $this->isForwardedValid = false;
 
@@ -2135,7 +2135,7 @@ private function getTrustedValues($type, $ip = null)
     private function normalizeAndFilterClientIps(array $clientIps, $ip)
     {
         if (!$clientIps) {
-            return array();
+            return [];
         }
         $clientIps[] = $ip; // Complete the IP chain with the IP the request actually came from
         $firstTrustedIp = null;
@@ -2171,6 +2171,6 @@ private function normalizeAndFilterClientIps(array $clientIps, $ip)
         }
 
         // Now the IP chain contains only untrusted proxies and the client IP
-        return $clientIps ? array_reverse($clientIps) : array($firstTrustedIp);
+        return $clientIps ? array_reverse($clientIps) : [$firstTrustedIp];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/RequestMatcher.php b/src/Symfony/Component/HttpFoundation/RequestMatcher.php
index 6b4cef147d99..cadf70c5b410 100644
--- a/src/Symfony/Component/HttpFoundation/RequestMatcher.php
+++ b/src/Symfony/Component/HttpFoundation/RequestMatcher.php
@@ -31,22 +31,22 @@ class RequestMatcher implements RequestMatcherInterface
     /**
      * @var string[]
      */
-    private $methods = array();
+    private $methods = [];
 
     /**
      * @var string[]
      */
-    private $ips = array();
+    private $ips = [];
 
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @var string[]
      */
-    private $schemes = array();
+    private $schemes = [];
 
     /**
      * @param string|null          $path
@@ -56,7 +56,7 @@ class RequestMatcher implements RequestMatcherInterface
      * @param array                $attributes
      * @param string|string[]|null $schemes
      */
-    public function __construct($path = null, $host = null, $methods = null, $ips = null, array $attributes = array(), $schemes = null)
+    public function __construct($path = null, $host = null, $methods = null, $ips = null, array $attributes = [], $schemes = null)
     {
         $this->matchPath($path);
         $this->matchHost($host);
@@ -76,7 +76,7 @@ public function __construct($path = null, $host = null, $methods = null, $ips =
      */
     public function matchScheme($scheme)
     {
-        $this->schemes = null !== $scheme ? array_map('strtolower', (array) $scheme) : array();
+        $this->schemes = null !== $scheme ? array_map('strtolower', (array) $scheme) : [];
     }
 
     /**
@@ -116,7 +116,7 @@ public function matchIp($ip)
      */
     public function matchIps($ips)
     {
-        $this->ips = null !== $ips ? (array) $ips : array();
+        $this->ips = null !== $ips ? (array) $ips : [];
     }
 
     /**
@@ -126,7 +126,7 @@ public function matchIps($ips)
      */
     public function matchMethod($method)
     {
-        $this->methods = null !== $method ? array_map('strtoupper', (array) $method) : array();
+        $this->methods = null !== $method ? array_map('strtoupper', (array) $method) : [];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/RequestStack.php b/src/Symfony/Component/HttpFoundation/RequestStack.php
index 40123f66f910..885d78a50e6e 100644
--- a/src/Symfony/Component/HttpFoundation/RequestStack.php
+++ b/src/Symfony/Component/HttpFoundation/RequestStack.php
@@ -21,7 +21,7 @@ class RequestStack
     /**
      * @var Request[]
      */
-    private $requests = array();
+    private $requests = [];
 
     /**
      * Pushes a Request on the stack.
diff --git a/src/Symfony/Component/HttpFoundation/Response.php b/src/Symfony/Component/HttpFoundation/Response.php
index f267d1e0e0fc..4d63219b2db2 100644
--- a/src/Symfony/Component/HttpFoundation/Response.php
+++ b/src/Symfony/Component/HttpFoundation/Response.php
@@ -128,7 +128,7 @@ class Response
      *
      * @var array
      */
-    public static $statusTexts = array(
+    public static $statusTexts = [
         100 => 'Continue',
         101 => 'Switching Protocols',
         102 => 'Processing',            // RFC2518
@@ -191,7 +191,7 @@ class Response
         508 => 'Loop Detected',                                               // RFC5842
         510 => 'Not Extended',                                                // RFC2774
         511 => 'Network Authentication Required',                             // RFC6585
-    );
+    ];
 
     /**
      * @param mixed $content The response content, see setContent()
@@ -200,7 +200,7 @@ class Response
      *
      * @throws \InvalidArgumentException When the HTTP status code is not valid
      */
-    public function __construct($content = '', $status = 200, $headers = array())
+    public function __construct($content = '', $status = 200, $headers = [])
     {
         $this->headers = new ResponseHeaderBag($headers);
         $this->setContent($content);
@@ -222,7 +222,7 @@ public function __construct($content = '', $status = 200, $headers = array())
      *
      * @return static
      */
-    public static function create($content = '', $status = 200, $headers = array())
+    public static function create($content = '', $status = 200, $headers = [])
     {
         return new static($content, $status, $headers);
     }
@@ -375,7 +375,7 @@ public function send()
 
         if (\function_exists('fastcgi_finish_request')) {
             fastcgi_finish_request();
-        } elseif (!\in_array(\PHP_SAPI, array('cli', 'phpdbg'), true)) {
+        } elseif (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true)) {
             static::closeOutputBuffers(0, true);
         }
 
@@ -395,7 +395,7 @@ public function send()
      */
     public function setContent($content)
     {
-        if (null !== $content && !\is_string($content) && !is_numeric($content) && !\is_callable(array($content, '__toString'))) {
+        if (null !== $content && !\is_string($content) && !is_numeric($content) && !\is_callable([$content, '__toString'])) {
             throw new \UnexpectedValueException(sprintf('The Response content must be a string or object implementing __toString(), "%s" given.', \gettype($content)));
         }
 
@@ -542,7 +542,7 @@ public function getCharset()
      */
     public function isCacheable()
     {
-        if (!\in_array($this->statusCode, array(200, 203, 300, 301, 302, 404, 410))) {
+        if (!\in_array($this->statusCode, [200, 203, 300, 301, 302, 404, 410])) {
             return false;
         }
 
@@ -974,7 +974,7 @@ public function setEtag($etag = null, $weak = false)
      */
     public function setCache(array $options)
     {
-        if ($diff = array_diff(array_keys($options), array('etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public', 'immutable'))) {
+        if ($diff = array_diff(array_keys($options), ['etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public', 'immutable'])) {
             throw new \InvalidArgumentException(sprintf('Response does not support the following options: "%s".', implode('", "', $diff)));
         }
 
@@ -1035,7 +1035,7 @@ public function setNotModified()
         $this->setContent(null);
 
         // remove headers that MUST NOT be included with 304 Not Modified responses
-        foreach (array('Allow', 'Content-Encoding', 'Content-Language', 'Content-Length', 'Content-MD5', 'Content-Type', 'Last-Modified') as $header) {
+        foreach (['Allow', 'Content-Encoding', 'Content-Language', 'Content-Length', 'Content-MD5', 'Content-Type', 'Last-Modified'] as $header) {
             $this->headers->remove($header);
         }
 
@@ -1064,10 +1064,10 @@ public function hasVary()
     public function getVary()
     {
         if (!$vary = $this->headers->get('Vary', null, false)) {
-            return array();
+            return [];
         }
 
-        $ret = array();
+        $ret = [];
         foreach ($vary as $item) {
             $ret = array_merge($ret, preg_split('/[\s,]+/', $item));
         }
@@ -1249,7 +1249,7 @@ public function isNotFound()
      */
     publ
F438
ic function isRedirect($location = null)
     {
-        return \in_array($this->statusCode, array(201, 301, 302, 303, 307, 308)) && (null === $location ?: $location == $this->headers->get('Location'));
+        return \in_array($this->statusCode, [201, 301, 302, 303, 307, 308]) && (null === $location ?: $location == $this->headers->get('Location'));
     }
 
     /**
@@ -1261,7 +1261,7 @@ public function isRedirect($location = null)
      */
     public function isEmpty()
     {
-        return \in_array($this->statusCode, array(204, 304));
+        return \in_array($this->statusCode, [204, 304]);
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php b/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
index 00cff7af0874..dc721a9deefa 100644
--- a/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
+++ b/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
@@ -24,11 +24,11 @@ class ResponseHeaderBag extends HeaderBag
     const DISPOSITION_ATTACHMENT = 'attachment';
     const DISPOSITION_INLINE = 'inline';
 
-    protected $computedCacheControl = array();
-    protected $cookies = array();
-    protected $headerNames = array();
+    protected $computedCacheControl = [];
+    protected $cookies = [];
+    protected $headerNames = [];
 
-    public function __construct(array $headers = array())
+    public function __construct(array $headers = [])
     {
         parent::__construct($headers);
 
@@ -49,7 +49,7 @@ public function __construct(array $headers = array())
      */
     public function allPreserveCase()
     {
-        $headers = array();
+        $headers = [];
         foreach ($this->all() as $name => $value) {
             $headers[isset($this->headerNames[$name]) ? $this->headerNames[$name] : $name] = $value;
         }
@@ -70,9 +70,9 @@ public function allPreserveCaseWithoutCookies()
     /**
      * {@inheritdoc}
      */
-    public function replace(array $headers = array())
+    public function replace(array $headers = [])
     {
-        $this->headerNames = array();
+        $this->headerNames = [];
 
         parent::replace($headers);
 
@@ -107,7 +107,7 @@ public function set($key, $values, $replace = true)
 
         if ('set-cookie' === $uniqueKey) {
             if ($replace) {
-                $this->cookies = array();
+                $this->cookies = [];
             }
             foreach ((array) $values as $cookie) {
                 $this->setCookie(Cookie::fromString($cookie));
@@ -122,9 +122,9 @@ public function set($key, $values, $replace = true)
         parent::set($key, $values, $replace);
 
         // ensure the cache-control header has sensible defaults
-        if (\in_array($uniqueKey, array('cache-control', 'etag', 'last-modified', 'expires'), true)) {
+        if (\in_array($uniqueKey, ['cache-control', 'etag', 'last-modified', 'expires'], true)) {
             $computed = $this->computeCacheControlValue();
-            $this->headers['cache-control'] = array($computed);
+            $this->headers['cache-control'] = [$computed];
             $this->headerNames['cache-control'] = 'Cache-Control';
             $this->computedCacheControl = $this->parseCacheControl($computed);
         }
@@ -139,7 +139,7 @@ public function remove($key)
         unset($this->headerNames[$uniqueKey]);
 
         if ('set-cookie' === $uniqueKey) {
-            $this->cookies = array();
+            $this->cookies = [];
 
             return;
         }
@@ -147,7 +147,7 @@ public function remove($key)
         parent::remove($key);
 
         if ('cache-control' === $uniqueKey) {
-            $this->computedCacheControl = array();
+            $this->computedCacheControl = [];
         }
 
         if ('date' === $uniqueKey) {
@@ -216,15 +216,15 @@ public function removeCookie($name, $path = '/', $domain = null)
      */
     public function getCookies($format = self::COOKIES_FLAT)
     {
-        if (!\in_array($format, array(self::COOKIES_FLAT, self::COOKIES_ARRAY))) {
-            throw new \InvalidArgumentException(sprintf('Format "%s" invalid (%s).', $format, implode(', ', array(self::COOKIES_FLAT, self::COOKIES_ARRAY))));
+        if (!\in_array($format, [self::COOKIES_FLAT, self::COOKIES_ARRAY])) {
+            throw new \InvalidArgumentException(sprintf('Format "%s" invalid (%s).', $format, implode(', ', [self::COOKIES_FLAT, self::COOKIES_ARRAY])));
         }
 
         if (self::COOKIES_ARRAY === $format) {
             return $this->cookies;
         }
 
-        $flattenedCookies = array();
+        $flattenedCookies = [];
         foreach ($this->cookies as $path) {
             foreach ($path as $cookies) {
                 foreach ($cookies as $cookie) {
@@ -267,7 +267,7 @@ public function clearCookie($name, $path = '/', $domain = null, $secure = false,
      */
     public function makeDisposition($disposition, $filename, $filenameFallback = '')
     {
-        if (!\in_array($disposition, array(self::DISPOSITION_ATTACHMENT, self::DISPOSITION_INLINE))) {
+        if (!\in_array($disposition, [self::DISPOSITION_ATTACHMENT, self::DISPOSITION_INLINE])) {
             throw new \InvalidArgumentException(sprintf('The disposition must be either "%s" or "%s".', self::DISPOSITION_ATTACHMENT, self::DISPOSITION_INLINE));
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/ServerBag.php b/src/Symfony/Component/HttpFoundation/ServerBag.php
index d8ab561aafb1..90da49fae5db 100644
--- a/src/Symfony/Component/HttpFoundation/ServerBag.php
+++ b/src/Symfony/Component/HttpFoundation/ServerBag.php
@@ -27,8 +27,8 @@ class ServerBag extends ParameterBag
      */
     public function getHeaders()
     {
-        $headers = array();
-        $contentHeaders = array('CONTENT_LENGTH' => true, 'CONTENT_MD5' => true, 'CONTENT_TYPE' => true);
+        $headers = [];
+        $contentHeaders = ['CONTENT_LENGTH' => true, 'CONTENT_MD5' => true, 'CONTENT_TYPE' => true];
         foreach ($this->parameters as $key => $value) {
             if (0 === strpos($key, 'HTTP_')) {
                 $headers[substr($key, 5)] = $value;
diff --git a/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBag.php b/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBag.php
index fc5fb14101b2..b5666f8543e3 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Attribute/AttributeBag.php
@@ -19,7 +19,7 @@ class AttributeBag implements AttributeBagInterface, \IteratorAggregate, \Counta
     private $name = 'attributes';
     private $storageKey;
 
-    protected $attributes = array();
+    protected $attributes = [];
 
     /**
      * @param string $storageKey The key used to store attributes in the session
@@ -95,7 +95,7 @@ public function all()
      */
     public function replace(array $attributes)
     {
-        $this->attributes = array();
+        $this->attributes = [];
         foreach ($attributes as $key => $value) {
             $this->set($key, $value);
         }
@@ -121,7 +121,7 @@ public function remove($name)
     public function clear()
     {
         $return = $this->attributes;
-        $this->attributes = array();
+        $this->attributes = [];
 
         return $return;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Attribute/NamespacedAttributeBag.php b/src/Symfony/Component/HttpFoundation/Session/Attribute/NamespacedAttributeBag.php
index 2f1e01a971a9..95e48253bfb0 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Attribute/NamespacedAttributeBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Attribute/NamespacedAttributeBag.php
@@ -115,7 +115,7 @@ protected function &resolveAttributePath($name, $writeContext = false)
                 return $array;
             }
 
-            $array[$parts[0]] = array();
+            $array[$parts[0]] = [];
 
             return $array;
         }
@@ -130,7 +130,7 @@ protected function &resolveAttributePath($name, $writeContext = false)
                     return $null;
                 }
 
-                $array[$part] = array();
+                $array[$part] = [];
             }
 
             $array = &$array[$part];
diff --git a/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php b/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
index 77521c24789c..12345c8238c7 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
@@ -19,7 +19,7 @@
 class AutoExpireFlashBag implements FlashBagInterface
 {
     private $name = 'flashes';
-    private $flashes = array('display' => array(), 'new' => array());
+    private $flashes = ['display' => [], 'new' => []];
     private $storageKey;
 
     /**
@@ -53,8 +53,8 @@ public function initialize(array &$flashes)
         // The logic: messages from the last request will be stored in new, so we move them to previous
         // This request we will show what is in 'display'.  What is placed into 'new' this time round will
         // be moved to display next time round.
-        $this->flashes['display'] = array_key_exists('new', $this->flashes) ? $this->flashes['new'] : array();
-        $this->flashes['new'] = array();
+        $this->flashes['display'] = array_key_exists('new', $this->flashes) ? $this->flashes['new'] : [];
+        $this->flashes['new'] = [];
     }
 
     /**
@@ -68,7 +68,7 @@ public function add($type, $message)
     /**
      * {@inheritdoc}
      */
-    public function peek($type, array $default = array())
+    public function peek($type, array $default = [])
     {
         return $this->has($type) ? $this->flashes['display'][$type] : $default;
     }
@@ -78,13 +78,13 @@ public function peek($type, array $default = array())
      */
     public function peekAll()
     {
-        return array_key_exists('display', $this->flashes) ? (array) $this->flashes['display'] : array();
+        return array_key_exists('display', $this->flashes) ? (array) $this->flashes['display'] : [];
     }
 
     /**
      * {@inheritdoc}
      */
-    public function get($type, array $default = array())
+    public function get($type, array $default = [])
     {
         $return = $default;
 
@@ -106,7 +106,7 @@ public function get($type, array $default = array())
     public function all()
     {
         $return = $this->flashes['display'];
-        $this->flashes['display'] = array();
+        $this->flashes['display'] = [];
 
         return $return;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBag.php b/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBag.php
index 12fb740c5220..19baabb943b6 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBag.php
@@ -19,7 +19,7 @@
 class FlashBag implements FlashBagInterface
 {
     private $name = 'flashes';
-    private $flashes = array();
+    private $flashes = [];
     private $storageKey;
 
     /**
@@ -62,7 +62,7 @@ public function add($type, $message)
     /**
      * {@inheritdoc}
      */
-    public function peek($type, array $default = array())
+    public function peek($type, array $default = [])
     {
         return $this->has($type) ? $this->flashes[$type] : $default;
     }
@@ -78,7 +78,7 @@ public function peekAll()
     /**
      * {@inheritdoc}
      */
-    public function get($type, array $default = array())
+    public function get($type, array $default = [])
     {
         if (!$this->has($type)) {
             return $default;
@@ -97,7 +97,7 @@ public function get($type, array $default = array())
     public function all()
     {
         $return = $this->peekAll();
-        $this->flashes = array();
+        $this->flashes = [];
 
         return $return;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php b/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php
index f53c9dae6c0a..2bd1d62bdbf1 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Flash/FlashBagInterface.php
@@ -44,7 +44,7 @@ public function set($type, $message);
      *
      * @return array
      */
-    public function peek($type, array $default = array());
+    public function peek($type, array $default = []);
 
     /**
      * Gets all flash messages.
@@ -61,7 +61,7 @@ public function peekAll();
      *
      * @return array
      */
-    public function get($type, array $default = array());
+    public function get($type, array $default = []);
 
     /**
      * Gets and clears flashes from the stack.
diff --git a/src/Symfony/Component/HttpFoundation/Session/Session.php b/src/Symfony/Component/HttpFoundation/Session/Session.php
index 334990687586..867ceba97f8d 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Session.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Session.php
@@ -28,7 +28,7 @@ class Session implements SessionInterface, \IteratorAggregate, \Countable
 
     private $flashName;
     private $attributeName;
-    private $data = array();
+    private $data = [];
     private $usageIndex = 0;
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
index 0d119498d022..eb09c0b54e01 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
@@ -113,7 +113,7 @@ public function write($sessionId, $data)
         }
         if (null === $this->igbinaryEmptyData) {
             // see https://github.com/igbinary/igbinary/issues/146
-            $this->igbinaryEmptyData = \function_exists('igbinary_serialize') ? igbinary_serialize(array()) : '';
+            $this->igbinaryEmptyData = \function_exists('igbinary_serialize') ? igbinary_serialize([]) : '';
         }
         if ('' === $data || $this->igbinaryEmptyData === $data) {
             return $this->destroy($sessionId);
@@ -138,7 +138,7 @@ public function destroy($sessionId)
             $sessionCookie = sprintf(' %s=', urlencode($this->sessionName));
             $sessionCookieWithId = sprintf('%s%s;', $sessionCookie, urlencode($sessionId));
             $sessionCookieFound = false;
-            $otherCookies = array();
+            $otherCookies = [];
             foreach (headers_list() as $h) {
                 if (0 !== stripos($h, 'Set-Cookie:')) {
                     continue;
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
index 1b12c921894f..3abc33caa55c 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
@@ -44,9 +44,9 @@ class MemcacheSessionHandler implements \SessionHandlerInterface
      *
      * @throws \InvalidArgumentException When unsupported options are passed
      */
-    public function __construct(\Memcache $memcache, array $options = array())
+    public function __construct(\Memcache $memcache, array $options = [])
     {
-        if ($diff = array_diff(array_keys($options), array('prefix', 'expiretime'))) {
+        if ($diff = array_diff(array_keys($options), ['prefix', 'expiretime'])) {
             throw new \InvalidArgumentException(sprintf('The following options are not supported "%s"', implode(', ', $diff)));
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
index 61a7afd90400..3c3e3b2d22a7 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
@@ -45,11 +45,11 @@ class MemcachedSessionHandler extends AbstractSessionHandler
      *
      * @throws \InvalidArgumentException When unsupported options are passed
      */
-    public function __construct(\Memcached $memcached, array $options = array())
+    public function __construct(\Memcached $memcached, array $options = [])
     {
         $this->memcached = $memcached;
 
-        if ($diff = array_diff(array_keys($options), array('prefix', 'expiretime'))) {
+        if ($diff = array_diff(array_keys($options), ['prefix', 'expiretime'])) {
             throw new \InvalidArgumentException(sprintf('The following options are not supported "%s"', implode(', ', $diff)));
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
index 7d3fa218a269..3b5ccaa83595 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
@@ -83,12 +83,12 @@ public function __construct($mongo, array $options)
 
         $this->mongo = $mongo;
 
-        $this->options = array_merge(array(
+        $this->options = array_merge([
             'id_field' => '_id',
             'data_field' => 'data',
             'time_field' => 'time',
             'expiry_field' => 'expires_at',
-        ), $options);
+        ], $options);
     }
 
     /**
@@ -106,9 +106,9 @@ protected function doDestroy($sessionId)
     {
         $methodName = $this->mongo instanceof \MongoDB\Client ? 'deleteOne' : 'remove';
 
-        $this->getCollection()->$methodName(array(
+        $this->getCollection()->$methodName([
             $this->options['id_field'] => $sessionId,
-        ));
+        ]);
 
         return true;
     }
@@ -120,9 +120,9 @@ public function gc($maxlifetime)
     {
         $methodName = $this->mongo instanceof \MongoDB\Client ? 'deleteMany' : 'remove';
 
-        $this->getCollection()->$methodName(array(
-            $this->options['expiry_field'] => array('$lt' => $this->createDateTime()),
-        ));
+        $this->getCollection()->$methodName([
+            $this->options['expiry_field'] => ['$lt' => $this->createDateTime()],
+        ]);
 
         return true;
     }
@@ -134,12 +134,12 @@ protected function doWrite($sessionId, $data)
     {
         $expiry = $this->createDateTime(time() + (int) ini_get('session.gc_maxlifetime'));
 
-        $fields = array(
+        $fields = [
             $this->options['time_field'] => $this->createDateTime(),
             $this->options['expiry_field'] => $expiry,
-        );
+        ];
 
-        $options = array('upsert' => true);
+        $options = ['upsert' => true];
 
         if ($this->mongo instanceof \MongoDB\Client) {
             $fields[$this->options['data_field']] = new \MongoDB\BSON\Binary($data, \MongoDB\BSON\Binary::TYPE_OLD_BINARY);
@@ -151,8 +151,8 @@ protected function doWrite($sessionId, $data)
         $methodName = $this->mongo instanceof \MongoDB\Client ? 'updateOne' : 'update';
 
         $this->getCollection()->$methodName(
-            array($this->options['id_field'] => $sessionId),
-            array('$set' => $fields),
+            [$this->options['id_field'] => $sessionId],
+            ['$set' => $fields],
             $options
         );
 
@@ -168,18 +168,18 @@ public function updateTimestamp($sessionId, $data)
 
         if ($this->mongo instanceof \MongoDB\Client) {
             $methodName = 'updateOne';
-            $options = array();
+            $options = [];
         } else {
             $methodName = 'update';
-            $options = array('multiple' => false);
+            $options = ['multiple' => false];
         }
 
         $this->getCollection()->$methodName(
-            array($this->options['id_field'] => $sessionId),
-            array('$set' => array(
+            [$this->options['id_field'] => $sessionId],
+            ['$set' => [
                 $this->options['time_field'] => $this->createDateTime(),
                 $this->options['expiry_field'] => $expiry,
-            )),
+            ]],
             $options
         );
 
@@ -191,10 +191,10 @@ public function updateTimestamp($sessionId, $data)
      */
     protected function doRead($sessionId)
     {
-        $dbData = $this->getCollection()->findOne(array(
+        $dbData = $this->getCollection()->findOne([
             $this->options['id_field'] => $sessionId,
-            $this->options['expiry_field'] => array('$gte' => $this->createDateTime()),
-        ));
+            $this->options['expiry_field'] => ['$gte' => $this->createDateTime()],
+        ]);
 
         if (null === $dbData) {
             return '';
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
index 8c0c42fd23db..c027a9e6e5ee 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
@@ -118,7 +118,7 @@ class PdoSessionHandler extends AbstractSessionHandler
     /**
      * @var array Connection options when lazy-connect
      */
-    private $connectionOptions = array();
+    private $connectionOptions = [];
 
     /**
      * @var int The strategy for locking, see constants
@@ -130,7 +130,7 @@ class PdoSessionHandler extends AbstractSessionHandler
      *
      * @var \PDOStatement[] An array of statements to release advisory locks
      */
-    private $unlockStatements = array();
+    private $unlockStatements = [];
 
     /**
      * @var bool True when the current session exists but expired according to session.gc_maxlifetime
@@ -169,7 +169,7 @@ class PdoSessionHandler extends AbstractSessionHandler
      *
      * @throws \InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
      */
-    public function __construct($pdoOrDsn = null, array $options = array())
+    public function __construct($pdoOrDsn = null, array $options = [])
     {
         if ($pdoOrDsn instanceof \PDO) {
             if (\PDO::ERRMODE_EXCEPTION !== $pdoOrDsn->getAttribute(\PDO::ATTR_ERRMODE)) {
@@ -468,13 +468,13 @@ private function buildDsnFromUrl($dsnOrUrl)
             throw new \InvalidArgumentException('URLs without scheme are not supported to configure the PdoSessionHandler');
         }
 
-        $driverAliasMap = array(
+        $driverAliasMap = [
             'mssql' => 'sqlsrv',
             'mysql2' => 'mysql', // Amazon RDS, for some weird reason
             'postgres' => 'pgsql',
             'postgresql' => 'pgsql',
             'sqlite3' => 'sqlite',
-        );
+        ];
 
         $driver = isset($driverAliasMap[$params['scheme']]) ? $driverAliasMap[$params['scheme']] : $params['scheme'];
 
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/MetadataBag.php b/src/Symfony/Component/HttpFoundation/Session/Storage/MetadataBag.php
index 6f59af486981..a62f108b34bb 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/MetadataBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/MetadataBag.php
@@ -39,7 +39,7 @@ class MetadataBag implements SessionBagInterface
     /**
      * @var array
      */
-    protected $meta = array(self::CREATED => 0, self::UPDATED => 0, self::LIFETIME => 0);
+    protected $meta = [self::CREATED => 0, self::UPDATED => 0, self::LIFETIME => 0];
 
     /**
      * Unix timestamp.
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/MockArraySessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/MockArraySessionStorage.php
index 027f4efffce5..c1e7523c5e44 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/MockArraySessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/MockArraySessionStorage.php
@@ -50,7 +50,7 @@ class MockArraySessionStorage implements SessionStorageInterface
     /**
      * @var array
      */
-    protected $data = array();
+    protected $data = [];
 
     /**
      * @var MetadataBag
@@ -60,7 +60,7 @@ class MockArraySessionStorage implements SessionStorageInterface
     /**
      * @var array|SessionBagInterface[]
      */
-    protected $bags = array();
+    protected $bags = [];
 
     /**
      * @param string      $name    Session name
@@ -170,7 +170,7 @@ public function clear()
         }
 
         // clear out the session
-        $this->data = array();
+        $this->data = [];
 
         // reconnect the bags to the session
         $this->loadSession();
@@ -242,11 +242,11 @@ protected function generateId()
 
     protected function loadSession()
     {
-        $bags = array_merge($this->bags, array($this->metadataBag));
+        $bags = array_merge($this->bags, [$this->metadataBag]);
 
         foreach ($bags as $bag) {
             $key = $bag->getStorageKey();
-            $this->data[$key] = isset($this->data[$key]) ? $this->data[$key] : array();
+            $this->data[$key] = isset($this->data[$key]) ? $this->data[$key] : [];
             $bag->initialize($this->data[$key]);
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/MockFileSessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/MockFileSessionStorage.php
index 14f427007ba8..9bbd1baf2cd6 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/MockFileSessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/MockFileSessionStorage.php
@@ -98,7 +98,7 @@ public function save()
                 unset($data[$key]);
             }
         }
-        if (array($key = $this->metadataBag->getStorageKey()) === array_keys($data)) {
+        if ([$key = $this->metadataBag->getStorageKey()] === array_keys($data)) {
             unset($data[$key]);
         }
 
@@ -145,7 +145,7 @@ private function getFilePath()
     private function read()
     {
         $filePath = $this->getFilePath();
-        $this->data = is_readable($filePath) && is_file($filePath) ? unserialize(file_get_contents($filePath)) : array();
+        $this->data = is_readable($filePath) && is_file($filePath) ? unserialize(file_get_contents($filePath)) : [];
 
         $this->loadSession();
     }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
index a18f812d57e5..a2f64a3afb7a 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
@@ -26,7 +26,7 @@ class NativeSessionStorage implements SessionStorageInterface
     /**
      * @var SessionBagInterface[]
      */
-    protected $bags = array();
+    protected $bags = [];
 
     /**
      * @var bool
@@ -98,14 +98,14 @@ class NativeSessionStorage implements SessionStorageInterface
      * @param \SessionHandlerInterface|null $handler
      * @param MetadataBag                   $metaBag MetadataBag
      */
-    public function __construct(array $options = array(), $handler = null, MetadataBag $metaBag = null)
+    public function __construct(array $options = [], $handler = null, MetadataBag $metaBag = null)
     {
-        $options += array(
+        $options += [
             'cache_limiter' => '',
             'cache_expire' => 0,
             'use_cookies' => 1,
             'lazy_write' => 1,
-        );
+        ];
 
         session_register_shutdown();
 
@@ -226,7 +226,7 @@ public function save()
                 unset($_SESSION[$key]);
             }
         }
-        if (array($key = $this->metadataBag->getStorageKey()) === array_keys($_SESSION)) {
+        if ([$key = $this->metadataBag->getStorageKey()] === array_keys($_SESSION)) {
             unset($_SESSION[$key]);
         }
 
@@ -262,7 +262,7 @@ public function clear()
         }
 
         // clear out the session
-        $_SESSION = array();
+        $_SESSION = [];
 
         // reconnect the bags to the session
         $this->loadSession();
@@ -341,7 +341,7 @@ public function setOptions(array $options)
             return;
         }
 
-        $validOptions = array_flip(array(
+        $validOptions = array_flip([
             'cache_expire', 'cache_limiter', 'cookie_domain', 'cookie_httponly',
             'cookie_lifetime', 'cookie_path', 'cookie_secure',
             'entropy_file', 'entropy_length', 'gc_divisor',
@@ -352,7 +352,7 @@ public function setOptions(array $options)
             'upload_progress.cleanup', 'upload_progress.prefix', 'upload_progress.name',
             'upload_progress.freq', 'upload_progress.min_freq', 'url_rewriter.tags',
             'sid_length', 'sid_bits_per_character', 'trans_sid_hosts', 'trans_sid_tags',
-        ));
+        ]);
 
         foreach ($options as $key => $value) {
             if (isset($validOptions[$key])) {
@@ -422,11 +422,11 @@ protected function loadSession(array &$session = null)
             $session = &$_SESSION;
         }
 
-        $bags = array_merge($this->bags, array($this->metadataBag));
+        $bags = array_merge($this->bags, [$this->metadataBag]);
 
         foreach ($bags as $bag) {
             $key = $bag->getStorageKey();
-            $session[$key] = isset($session[$key]) ? $session[$key] : array();
+            $session[$key] = isset($session[$key]) ? $session[$key] : [];
             $bag->initialize($session[$key]);
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/StreamedResponse.php b/src/Symfony/Component/HttpFoundation/StreamedResponse.php
index 3a55d5d2b978..8bc5fc91a5c1 100644
--- a/src/Symfony/Component/HttpFoundation/StreamedResponse.php
+++ b/src/Symfony/Component/HttpFoundation/StreamedResponse.php
@@ -35,7 +35,7 @@ class StreamedResponse extends Response
      * @param int           $status   The response status code
      * @param array         $headers  An array of response headers
      */
-    public function __construct(callable $callback = null, $status = 200, $headers = array())
+    public function __construct(callable $callback = null, $status = 200, $headers = [])
     {
         parent::__construct(null, $status, $headers);
 
@@ -55,7 +55,7 @@ public function __construct(callable $callback = null, $status = 200, $headers =
      *
      * @return static
      */
-    public static function create($callback = null, $status = 200, $headers = array())
+    public static function create($callback = null, $status = 200, $headers = [])
     {
         return new static($callback, $status, $headers);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderItemTest.php b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderItemTest.php
index cb43bb35168a..a40a7621d033 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderItemTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderItemTest.php
@@ -28,24 +28,24 @@ public function testFromString($string, $value, array $attributes)
 
     public function provideFromStringData()
     {
-        return array(
-            array(
+        return [
+            [
                 'text/html',
-                'text/html', array(),
-            ),
-            array(
+                'text/html', [],
+            ],
+            [
                 '"this;should,not=matter"',
-                'this;should,not=matter', array(),
-            ),
-            array(
+                'this;should,not=matter', [],
+            ],
+            [
                 "text/plain; charset=utf-8;param=\"this;should,not=matter\";\tfootnotes=true",
-                'text/plain', array('charset' => 'utf-8', 'param' => 'this;should,not=matter', 'footnotes' => 'true'),
-            ),
-            array(
+                'text/plain', ['charset' => 'utf-8', 'param' => 'this;should,not=matter', 'footnotes' => 'true'],
+            ],
+            [
                 '"this;should,not=matter";charset=utf-8',
-                'this;should,not=matter', array('charset' => 'utf-8'),
-            ),
-        );
+                'this;should,not=matter', ['charset' => 'utf-8'],
+            ],
+        ];
     }
 
     /**
@@ -59,21 +59,21 @@ public function testToString($value, array $attributes, $string)
 
     public function provideToStringData()
     {
-        return array(
-            array(
-                'text/html', array(),
+        return [
+            [
+                'text/html', [],
                 'text/html',
-            ),
-            array(
-                'text/plain', array('charset' => 'utf-8', 'param' => 'this;should,not=matter', 'footnotes' => 'true'),
+            ],
+            [
+                'text/plain', ['charset' => 'utf-8', 'param' => 'this;should,not=matter', 'footnotes' => 'true'],
                 'text/plain;charset=utf-8;param="this;should,not=matter";footnotes=true',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testValue()
     {
-        $item = new AcceptHeaderItem('value', array());
+        $item = new AcceptHeaderItem('value', []);
         $this->assertEquals('value', $item->getValue());
 
         $item->setValue('new value');
@@ -85,7 +85,7 @@ public function testValue()
 
     public function testQuality()
     {
-        $item = new AcceptHeaderItem('value', array());
+        $item = new AcceptHeaderItem('value', []);
         $this->assertEquals(1.0, $item->getQuality());
 
         $item->setQuality(0.5);
@@ -98,14 +98,14 @@ public function testQuality()
 
     public function testAttribute()
     {
-        $item = new AcceptHeaderItem('value', array());
-        $this->assertEquals(array(), $item->getAttributes());
+        $item = new AcceptHeaderItem('value', []);
+        $this->assertEquals([], $item->getAttributes());
         $this->assertFalse($item->hasAttribute('test'));
         $this->assertNull($item->getAttribute('test'));
         $this->assertEquals('default', $item->getAttribute('test', 'default'));
 
         $item->setAttribute('test', 'value');
-        $this->assertEquals(array('test' => 'value'), $item->getAttributes());
+        $this->assertEquals(['test' => 'value'], $item->getAttributes());
         $this->assertTrue($item->hasAttribute('test'));
         $this->assertEquals('value', $item->getAttribute('test'));
         $this->assertEquals('value', $item->getAttribute('test', 'default'));
diff --git a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
index 9929eac28ef0..459b693d5cb8 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
@@ -39,13 +39,13 @@ public function testFromString($string, array $items)
 
     public function provideFromStringData()
     {
-        return array(
-            array('', array()),
-            array('gzip', array(new AcceptHeaderItem('gzip'))),
-            array('gzip,deflate,sdch', array(new AcceptHeaderItem('gzip'), new AcceptHeaderItem('deflate'), new AcceptHeaderItem('sdch'))),
-            array("gzip, deflate\t,sdch", array(new AcceptHeaderItem('gzip'), new AcceptHeaderItem('deflate'), new AcceptHeaderItem('sdch'))),
-            array('"this;should,not=matter"', array(new AcceptHeaderItem('this;should,not=matter'))),
-        );
+        return [
+            ['', []],
+            ['gzip', [new AcceptHeaderItem('gzip')]],
+            ['gzip,deflate,sdch', [new AcceptHeaderItem('gzip'), new AcceptHeaderItem('deflate'), new AcceptHeaderItem('sdch')]],
+            ["gzip, deflate\t,sdch", [new AcceptHeaderItem('gzip'), new AcceptHeaderItem('deflate'), new AcceptHeaderItem('sdch')]],
+            ['"this;should,not=matter"', [new AcceptHeaderItem('this;should,not=matter')]],
+        ];
     }
 
     /**
@@ -59,12 +59,12 @@ public function testToString(array $items, $string)
 
     public function provideToStringData()
     {
-        return array(
-            array(array(), ''),
-            array(array(new AcceptHeaderItem('gzip')), 'gzip'),
-            array(array(new AcceptHeaderItem('gzip'), new AcceptHeaderItem('deflate'), new AcceptHeaderItem('sdch')), 'gzip,deflate,sdch'),
-            array(array(new AcceptHeaderItem('this;should,not=matter')), 'this;should,not=matter'),
-        );
+        return [
+            [[], ''],
+            [[new AcceptHeaderItem('gzip')], 'gzip'],
+            [[new AcceptHeaderItem('gzip'), new AcceptHeaderItem('deflate'), new AcceptHeaderItem('sdch')], 'gzip,deflate,sdch'],
+            [[new AcceptHeaderItem('this;should,not=matter')], 'this;should,not=matter'],
+        ];
     }
 
     /**
@@ -78,9 +78,9 @@ public function testFilter($string, $filter, array $values)
 
     public function provideFilterData()
     {
-        return array(
-            array('fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4', '/fr.*/', array('fr-FR', 'fr')),
-        );
+        return [
+            ['fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4', '/fr.*/', ['fr-FR', 'fr']],
+        ];
     }
 
     /**
@@ -94,10 +94,10 @@ public function testSorting($string, array $values)
 
     public function provideSortingData()
     {
-        return array(
-            'quality has priority' => array('*;q=0.3,ISO-8859-1,utf-8;q=0.7',  array('ISO-8859-1', 'utf-8', '*')),
-            'order matters when q is equal' => array('*;q=0.3,ISO-8859-1;q=0.7,utf-8;q=0.7',  array('ISO-8859-1', 'utf-8', '*')),
-            'order matters when q is equal2' => array('*;q=0.3,utf-8;q=0.7,ISO-8859-1;q=0.7',  array('utf-8', 'ISO-8859-1', '*')),
-        );
+        return [
+            'quality has priority' => ['*;q=0.3,ISO-8859-1,utf-8;q=0.7',  ['ISO-8859-1', 'utf-8', '*']],
+            'order matters when q is equal' => ['*;q=0.3,ISO-8859-1;q=0.7,utf-8;q=0.7',  ['ISO-8859-1', 'utf-8', '*']],
+            'order matters when q is equal2' => ['*;q=0.3,utf-8;q=0.7,ISO-8859-1;q=0.7',  ['utf-8', 'ISO-8859-1', '*']],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ApacheRequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/ApacheRequestTest.php
index 157ab90ec59a..6fa3b8891705 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ApacheRequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ApacheRequestTest.php
@@ -31,63 +31,63 @@ public function testUriMethods($server, $expectedRequestUri, $expectedBaseUrl, $
 
     public function provideServerVars()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'REQUEST_URI' => '/foo/app_dev.php/bar',
                     'SCRIPT_NAME' => '/foo/app_dev.php',
                     'PATH_INFO' => '/bar',
-                ),
+                ],
                 '/foo/app_dev.php/bar',
                 '/foo/app_dev.php',
                 '/bar',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'REQUEST_URI' => '/foo/bar',
                     'SCRIPT_NAME' => '/foo/app_dev.php',
-                ),
+                ],
                 '/foo/bar',
                 '/foo',
                 '/bar',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'REQUEST_URI' => '/app_dev.php/foo/bar',
                     'SCRIPT_NAME' => '/app_dev.php',
                     'PATH_INFO' => '/foo/bar',
-                ),
+                ],
                 '/app_dev.php/foo/bar',
                 '/app_dev.php',
                 '/foo/bar',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'REQUEST_URI' => '/foo/bar',
                     'SCRIPT_NAME' => '/app_dev.php',
-                ),
+                ],
                 '/foo/bar',
                 '',
                 '/foo/bar',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'REQUEST_URI' => '/app_dev.php',
                     'SCRIPT_NAME' => '/app_dev.php',
-                ),
+                ],
                 '/app_dev.php',
                 '/app_dev.php',
                 '/',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'REQUEST_URI' => '/',
                     'SCRIPT_NAME' => '/app_dev.php',
-                ),
+                ],
                 '/',
                 '',
                 '/',
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/BinaryFileResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/BinaryFileResponseTest.php
index d21791f00051..c89f20d05a49 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/BinaryFileResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/BinaryFileResponseTest.php
@@ -22,14 +22,14 @@ class BinaryFileResponseTest extends ResponseTestCase
     public function testConstruction()
     {
         $file = __DIR__.'/../README.md';
-        $response = new BinaryFileResponse($file, 404, array('X-Header' => 'Foo'), true, null, true, true);
+        $response = new BinaryFileResponse($file, 404, ['X-Header' => 'Foo'], true, null, true, true);
         $this->assertEquals(404, $response->getStatusCode());
         $this->assertEquals('Foo', $response->headers->get('X-Header'));
         $this->assertTrue($response->headers->has('ETag'));
         $this->assertTrue($response->headers->has('Last-Modified'));
         $this->assertFalse($response->headers->has('Content-Disposition'));
 
-        $response = BinaryFileResponse::create($file, 404, array(), true, ResponseHeaderBag::DISPOSITION_INLINE);
+        $response = BinaryFileResponse::create($file, 404, [], true, ResponseHeaderBag::DISPOSITION_INLINE);
         $this->assertEquals(404, $response->getStatusCode());
         $this->assertFalse($response->headers->has('ETag'));
         $this->assertEquals('inline; filename="README.md"', $response->headers->get('Content-Disposition'));
@@ -39,7 +39,7 @@ public function testConstructWithNonAsciiFilename()
     {
         touch(sys_get_temp_dir().'/fööö.html');
 
-        $response = new BinaryFileResponse(sys_get_temp_dir().'/fööö.html', 200, array(), true, 'attachment');
+        $response = new BinaryFileResponse(sys_get_temp_dir().'/fööö.html', 200, [], true, 'attachment');
 
         @unlink(sys_get_temp_dir().'/fööö.html');
 
@@ -85,7 +85,7 @@ public function testSetContentDispositionGeneratesSafeFallbackFilenameForWrongly
      */
     public function testRequests($requestRange, $offset, $length, $responseRange)
     {
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'))->setAutoEtag();
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream'])->setAutoEtag();
 
         // do a request to get the ETag
         $request = Request::create('/');
@@ -117,7 +117,7 @@ public function testRequests($requestRange, $offset, $length, $responseRange)
      */
     public function testRequestsWithoutEtag($requestRange, $offset, $length, $responseRange)
     {
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'));
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream']);
 
         // do a request to get the LastModified
         $request = Request::create('/');
@@ -145,19 +145,19 @@ public function testRequestsWithoutEtag($requestRange, $offset, $length, $respon
 
     public function provideRanges()
     {
-        return array(
-            array('bytes=1-4', 1, 4, 'bytes 1-4/35'),
-            array('bytes=-5', 30, 5, 'bytes 30-34/35'),
-            array('bytes=30-', 30, 5, 'bytes 30-34/35'),
-            array('bytes=30-30', 30, 1, 'bytes 30-30/35'),
-            array('bytes=30-34', 30, 5, 'bytes 30-34/35'),
-        );
+        return [
+            ['bytes=1-4', 1, 4, 'bytes 1-4/35'],
+            ['bytes=-5', 30, 5, 'bytes 30-34/35'],
+            ['bytes=30-', 30, 5, 'bytes 30-34/35'],
+            ['bytes=30-30', 30, 1, 'bytes 30-30/35'],
+            ['bytes=30-34', 30, 5, 'bytes 30-34/35'],
+        ];
     }
 
     public function testRangeRequestsWithoutLastModifiedDate()
     {
         // prevent auto last modified
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'), true, null, false, false);
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream'], true, null, false, false);
 
         // prepare a request for a range of the testing file
         $request = Request::create('/');
@@ -178,7 +178,7 @@ public function testRangeRequestsWithoutLastModifiedDate()
      */
     public function testFullFileRequests($requestRange)
     {
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'))->setAutoEtag();
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream'])->setAutoEtag();
 
         // prepare a request for a range of the testing file
         $request = Request::create('/');
@@ -198,14 +198,14 @@ public function testFullFileRequests($requestRange)
 
     public function provideFullFileRanges()
     {
-        return array(
-            array('bytes=0-'),
-            array('bytes=0-34'),
-            array('bytes=-35'),
+        return [
+            ['bytes=0-'],
+            ['bytes=0-34'],
+            ['bytes=-35'],
             // Syntactical invalid range-request should also return the full resource
-            array('bytes=20-10'),
-            array('bytes=50-40'),
-        );
+            ['bytes=20-10'],
+            ['bytes=50-40'],
+        ];
     }
 
     public function testUnpreparedResponseSendsFullFile()
@@ -226,7 +226,7 @@ public function testUnpreparedResponseSendsFullFile()
      */
     public function testInvalidRequests($requestRange)
     {
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'))->setAutoEtag();
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream'])->setAutoEtag();
 
         // prepare a request for a range of the testing file
         $request = Request::create('/');
@@ -242,10 +242,10 @@ public function testInvalidRequests($requestRange)
 
     public function provideInvalidRanges()
     {
-        return array(
-            array('bytes=-40'),
-            array('bytes=30-40'),
-        );
+        return [
+            ['bytes=-40'],
+            ['bytes=30-40'],
+        ];
     }
 
     /**
@@ -257,7 +257,7 @@ public function testXSendfile($file)
         $request->headers->set('X-Sendfile-Type', 'X-Sendfile');
 
         BinaryFileResponse::trustXSendfileTypeHeader();
-        $response = BinaryFileResponse::create($file, 200, array('Content-Type' => 'application/octet-stream'));
+        $response = BinaryFileResponse::create($file, 200, ['Content-Type' => 'application/octet-stream']);
         $response->prepare($request);
 
         $this->expectOutputString('');
@@ -268,10 +268,10 @@ public function testXSendfile($file)
 
     public function provideXSendfileFiles()
     {
-        return array(
-            array(__DIR__.'/../README.md'),
-            array('file://'.__DIR__.'/../README.md'),
-        );
+        return [
+            [__DIR__.'/../README.md'],
+            ['file://'.__DIR__.'/../README.md'],
+        ];
     }
 
     /**
@@ -286,7 +286,7 @@ public function testXAccelMapping($realpath, $mapping, $virtual)
         $file = new FakeFile($realpath, __DIR__.'/File/Fixtures/test');
 
         BinaryFileResponse::trustXSendfileTypeHeader();
-        $response = new BinaryFileResponse($file, 200, array('Content-Type' => 'application/octet-stream'));
+        $response = new BinaryFileResponse($file, 200, ['Content-Type' => 'application/octet-stream']);
         $reflection = new \ReflectionObject($response);
         $property = $reflection->getProperty('file');
         $property->setAccessible(true);
@@ -305,7 +305,7 @@ public function testDeleteFileAfterSend()
         $realPath = realpath($path);
         $this->assertFileExists($realPath);
 
-        $response = new BinaryFileResponse($realPath, 200, array('Content-Type' => 'application/octet-stream'));
+        $response = new BinaryFileResponse($realPath, 200, ['Content-Type' => 'application/octet-stream']);
         $response->deleteFileAfterSend(true);
 
         $response->prepare($request);
@@ -317,7 +317,7 @@ public function testDeleteFileAfterSend()
     public function testAcceptRangeOnUnsafeMethods()
     {
         $request = Request::create('/', 'POST');
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'));
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream']);
         $response->prepare($request);
 
         $this->assertEquals('none', $response->headers->get('Accept-Ranges'));
@@ -326,7 +326,7 @@ public function testAcceptRangeOnUnsafeMethods()
     public function testAcceptRangeNotOverriden()
     {
         $request = Request::create('/', 'POST');
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'));
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream']);
         $response->headers->set('Accept-Ranges', 'foo');
         $response->prepare($request);
 
@@ -335,16 +335,16 @@ public function testAcceptRangeNotOverriden()
 
     public function getSampleXAccelMappings()
     {
-        return array(
-            array('/var/www/var/www/files/foo.txt', '/var/www/=/files/', '/files/var/www/files/foo.txt'),
-            array('/home/foo/bar.txt', '/var/www/=/files/,/home/foo/=/baz/', '/baz/bar.txt'),
-        );
+        return [
+            ['/var/www/var/www/files/foo.txt', '/var/www/=/files/', '/files/var/www/files/foo.txt'],
+            ['/home/foo/bar.txt', '/var/www/=/files/,/home/foo/=/baz/', '/baz/bar.txt'],
+        ];
     }
 
     public function testStream()
     {
         $request = Request::create('/');
-        $response = new BinaryFileResponse(new Stream(__DIR__.'/../README.md'), 200, array('Content-Type' => 'text/plain'));
+        $response = new BinaryFileResponse(new Stream(__DIR__.'/../README.md'), 200, ['Content-Type' => 'text/plain']);
         $response->prepare($request);
 
         $this->assertNull($response->headers->get('Content-Length'));
@@ -352,7 +352,7 @@ public function testStream()
 
     protected function provideResponse()
     {
-        return new BinaryFileResponse(__DIR__.'/../README.md', 200, array('Content-Type' => 'application/octet-stream'));
+        return new BinaryFileResponse(__DIR__.'/../README.md', 200, ['Content-Type' => 'application/octet-stream']);
     }
 
     public static function tearDownAfterClass()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/CookieTest.php b/src/Symfony/Component/HttpFoundation/Tests/CookieTest.php
index 14c45c9a6c89..aaf2edb38580 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/CookieTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/CookieTest.php
@@ -26,17 +26,17 @@ class CookieTest extends TestCase
 {
     public function invalidNames()
     {
-        return array(
-            array(''),
-            array(',MyName'),
-            array(';MyName'),
-            array(' MyName'),
-            array("\tMyName"),
-            array("\rMyName"),
-            array("\nMyName"),
-            array("\013MyName"),
-            array("\014MyName"),
-        );
+        return [
+            [''],
+            [',MyName'],
+            [';MyName'],
+            [' MyName'],
+            ["\tMyName"],
+            ["\rMyName"],
+            ["\nMyName"],
+            ["\013MyName"],
+            ["\014MyName"],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ExpressionRequestMatcherTest.php b/src/Symfony/Component/HttpFoundation/Tests/ExpressionRequestMatcherTest.php
index 1152e46c0be7..2afdade67d9c 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ExpressionRequestMatcherTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ExpressionRequestMatcherTest.php
@@ -55,15 +55,15 @@ public function testMatchesWhenParentMatchesIsFalse($expression)
 
     public function provideExpressions()
     {
-        return array(
-            array('request.getMethod() == method', true),
-            array('request.getPathInfo() == path', true),
-            array('request.getHost() == host', true),
-            array('request.getClientIp() == ip', true),
-            array('request.attributes.all() == attributes', true),
-            array('request.getMethod() == method && request.getPathInfo() == path && request.getHost() == host && request.getClientIp() == ip &&  request.attributes.all() == attributes', true),
-            array('request.getMethod() != method', false),
-            array('request.getMethod() != method && request.getPathInfo() == path && request.getHost() == host && request.getClientIp() == ip &&  request.attributes.all() == attributes', false),
-        );
+        return [
+            ['request.getMethod() == method', true],
+            ['request.getPathInfo() == path', true],
+            ['request.getHost() == host', true],
+            ['request.getClientIp() == ip', true],
+            ['request.attributes.all() == attributes', true],
+            ['request.getMethod() == method && request.getPathInfo() == path && request.getHost() == host && request.getClientIp() == ip &&  request.attributes.all() == attributes', true],
+            ['request.getMethod() != method', false],
+            ['request.getMethod() != method && request.getPathInfo() == path && request.getHost() == host && request.getClientIp() == ip &&  request.attributes.all() == attributes', false],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/File/FileTest.php b/src/Symfony/Component/HttpFoundation/Tests/File/FileTest.php
index dbd9c44bd802..fb82dae768b4 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/File/FileTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/File/FileTest.php
@@ -110,14 +110,14 @@ public function testMoveWithNewName()
 
     public function getFilenameFixtures()
     {
-        return array(
-            array('original.gif', 'original.gif'),
-            array('..\\..\\original.gif', 'original.gif'),
-            array('../../original.gif', 'original.gif'),
-            array('файлfile.gif', 'файлfile.gif'),
-            array('..\\..\\файлfile.gif', 'файлfile.gif'),
-            array('../../файлfile.gif', 'файлfile.gif'),
-        );
+        return [
+            ['original.gif', 'original.gif'],
+            ['..\\..\\original.gif', 'original.gif'],
+            ['../../original.gif', 'original.gif'],
+            ['файлfile.gif', 'файлfile.gif'],
+            ['..\\..\\файлfile.gif', 'файлfile.gif'],
+            ['../../файлfile.gif', 'файлfile.gif'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/Tests/File/UploadedFileTest.php b/src/Symfony/Component/HttpFoundation/Tests/File/UploadedFileTest.php
index 1a88d483505b..9c02b478edc0 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/File/UploadedFileTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/File/UploadedFileTest.php
@@ -249,13 +249,13 @@ public function testIsInvalidOnUploadError($error)
 
     public function uploadedFileErrorProvider()
     {
-        return array(
-            array(UPLOAD_ERR_INI_SIZE),
-            array(UPLOAD_ERR_FORM_SIZE),
-            array(UPLOAD_ERR_PARTIAL),
-            array(UPLOAD_ERR_NO_TMP_DIR),
-            array(UPLOAD_ERR_EXTENSION),
-        );
+        return [
+            [UPLOAD_ERR_INI_SIZE],
+            [UPLOAD_ERR_FORM_SIZE],
+            [UPLOAD_ERR_PARTIAL],
+            [UPLOAD_ERR_NO_TMP_DIR],
+            [UPLOAD_ERR_EXTENSION],
+        ];
     }
 
     public function testIsInvalidIfNotHttpUpload()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/FileBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/FileBagTest.php
index b1bbba0d3f57..0b6d660423f8 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/FileBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/FileBagTest.php
@@ -28,7 +28,7 @@ class FileBagTest extends TestCase
      */
     public function testFileMustBeAnArrayOrUploadedFile()
     {
-        new FileBag(array('file' => 'foo'));
+        new FileBag(['file' => 'foo']);
     }
 
     public function testShouldConvertsUploadedFiles()
@@ -36,54 +36,54 @@ public function testShouldConvertsUploadedFiles()
         $tmpFile = $this->createTempFile();
         $file = new UploadedFile($tmpFile, basename($tmpFile), 'text/plain', 100, 0);
 
-        $bag = new FileBag(array('file' => array(
+        $bag = new FileBag(['file' => [
             'name' => basename($tmpFile),
             'type' => 'text/plain',
             'tmp_name' => $tmpFile,
             'error' => 0,
             'size' => 100,
-        )));
+        ]]);
 
         $this->assertEquals($file, $bag->get('file'));
     }
 
     public function testShouldSetEmptyUploadedFilesToNull()
     {
-        $bag = new FileBag(array('file' => array(
+        $bag = new FileBag(['file' => [
             'name' => '',
             'type' => '',
             'tmp_name' => '',
             'error' => UPLOAD_ERR_NO_FILE,
             'size' => 0,
-        )));
+        ]]);
 
         $this->assertNull($bag->get('file'));
     }
 
     public function testShouldRemoveEmptyUploadedFilesForMultiUpload()
     {
-        $bag = new FileBag(array('files' => array(
-            'name' => array(''),
-            'type' => array(''),
-            'tmp_name' => array(''),
-            'error' => array(UPLOAD_ERR_NO_FILE),
-            'size' => array(0),
-        )));
-
-        $this->assertSame(array(), $bag->get('files'));
+        $bag = new FileBag(['files' => [
+            'name' => [''],
+            'type' => [''],
+            'tmp_name' => [''],
+            'error' => [UPLOAD_ERR_NO_FILE],
+            'size' => [0],
+        ]]);
+
+        $this->assertSame([], $bag->get('files'));
     }
 
     public function testShouldNotRemoveEmptyUploadedFilesForAssociativeArray()
     {
-        $bag = new FileBag(array('files' => array(
-            'name' => array('file1' => ''),
-            'type' => array('file1' => ''),
-            'tmp_name' => array('file1' => ''),
-            'error' => array('file1' => UPLOAD_ERR_NO_FILE),
-            'size' => array('file1' => 0),
-        )));
-
-        $this->assertSame(array('file1' => null), $bag->get('files'));
+        $bag = new FileBag(['files' => [
+            'name' => ['file1' => ''],
+            'type' => ['file1' => ''],
+            'tmp_name' => ['file1' => ''],
+            'error' => ['file1' => UPLOAD_ERR_NO_FILE],
+            'size' => ['file1' => 0],
+        ]]);
+
+        $this->assertSame(['file1' => null], $bag->get('files'));
     }
 
     public function testShouldConvertUploadedFilesWithPhpBug()
@@ -91,25 +91,25 @@ public function testShouldConvertUploadedFilesWithPhpBug()
         $tmpFile = $this->createTempFile();
         $file = new UploadedFile($tmpFile, basename($tmpFile), 'text/plain', 100, 0);
 
-        $bag = new FileBag(array(
-            'child' => array(
-                'name' => array(
+        $bag = new FileBag([
+            'child' => [
+                'name' => [
                     'file' => basename($tmpFile),
-                ),
-                'type' => array(
+                ],
+                'type' => [
                     'file' => 'text/plain',
-                ),
-                'tmp_name' => array(
+                ],
+                'tmp_name' => [
                     'file' => $tmpFile,
-                ),
-                'error' => array(
+                ],
+                'error' => [
                     'file' => 0,
-                ),
-                'size' => array(
+                ],
+                'size' => [
                     'file' => 100,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $files = $bag->all();
         $this->assertEquals($file, $files['child']['file']);
@@ -120,25 +120,25 @@ public function testShouldConvertNestedUploadedFilesWithPhpBug()
         $tmpFile = $this->createTempFile();
         $file = new UploadedFile($tmpFile, basename($tmpFile), 'text/plain', 100, 0);
 
-        $bag = new FileBag(array(
-            'child' => array(
-                'name' => array(
-                    'sub' => array('file' => basename($tmpFile)),
-                ),
-                'type' => array(
-                    'sub' => array('file' => 'text/plain'),
-                ),
-                'tmp_name' => array(
-                    'sub' => array('file' => $tmpFile),
-                ),
-                'error' => array(
-              
10000
      'sub' => array('file' => 0),
-                ),
-                'size' => array(
-                    'sub' => array('file' => 100),
-                ),
-            ),
-        ));
+        $bag = new FileBag([
+            'child' => [
+                'name' => [
+                    'sub' => ['file' => basename($tmpFile)],
+                ],
+                'type' => [
+                    'sub' => ['file' => 'text/plain'],
+                ],
+                'tmp_name' => [
+                    'sub' => ['file' => $tmpFile],
+                ],
+                'error' => [
+                    'sub' => ['file' => 0],
+                ],
+                'size' => [
+                    'sub' => ['file' => 100],
+                ],
+            ],
+        ]);
 
         $files = $bag->all();
         $this->assertEquals($file, $files['child']['sub']['file']);
@@ -148,7 +148,7 @@ public function testShouldNotConvertNestedUploadedFiles()
     {
         $tmpFile = $this->createTempFile();
         $file = new UploadedFile($tmpFile, basename($tmpFile), 'text/plain', 100, 0);
-        $bag = new FileBag(array('image' => array('file' => $file)));
+        $bag = new FileBag(['image' => ['file' => $file]]);
 
         $files = $bag->all();
         $this->assertEquals($file, $files['image']['file']);
diff --git a/src/Symfony/Component/HttpFoundation/Tests/HeaderBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/HeaderBagTest.php
index c5a437f99937..6c4915f2e43b 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/HeaderBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/HeaderBagTest.php
@@ -18,7 +18,7 @@ class HeaderBagTest extends TestCase
 {
     public function testConstructor()
     {
-        $bag = new HeaderBag(array('foo' => 'bar'));
+        $bag = new HeaderBag(['foo' => 'bar']);
         $this->assertTrue($bag->has('foo'));
     }
 
@@ -30,20 +30,20 @@ public function testToStringNull()
 
     public function testToStringNotNull()
     {
-        $bag = new HeaderBag(array('foo' => 'bar'));
+        $bag = new HeaderBag(['foo' => 'bar']);
         $this->assertEquals("Foo: bar\r\n", $bag->__toString());
     }
 
     public function testKeys()
     {
-        $bag = new HeaderBag(array('foo' => 'bar'));
+        $bag = new HeaderBag(['foo' => 'bar']);
         $keys = $bag->keys();
         $this->assertEquals('foo', $keys[0]);
     }
 
     public function testGetDate()
     {
-        $bag = new HeaderBag(array('foo' => 'Tue, 4 Sep 2012 20:00:00 +0200'));
+        $bag = new HeaderBag(['foo' => 'Tue, 4 Sep 2012 20:00:00 +0200']);
         $headerDate = $bag->getDate('foo');
         $this->assertInstanceOf('DateTime', $headerDate);
     }
@@ -53,7 +53,7 @@ public function testGetDate()
      */
     public function testGetDateException()
     {
-        $bag = new HeaderBag(array('foo' => 'Tue'));
+        $bag = new HeaderBag(['foo' => 'Tue']);
         $headerDate = $bag->getDate('foo');
     }
 
@@ -67,50 +67,50 @@ public function testGetCacheControlHeader()
 
     public function testAll()
     {
-        $bag = new HeaderBag(array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => array('bar')), $bag->all(), '->all() gets all the input');
+        $bag = new HeaderBag(['foo' => 'bar']);
+        $this->assertEquals(['foo' => ['bar']], $bag->all(), '->all() gets all the input');
 
-        $bag = new HeaderBag(array('FOO' => 'BAR'));
-        $this->assertEquals(array('foo' => array('BAR')), $bag->all(), '->all() gets all the input key are lower case');
+        $bag = new HeaderBag(['FOO' => 'BAR']);
+        $this->assertEquals(['foo' => ['BAR']], $bag->all(), '->all() gets all the input key are lower case');
     }
 
     public function testReplace()
     {
-        $bag = new HeaderBag(array('foo' => 'bar'));
+        $bag = new HeaderBag(['foo' => 'bar']);
 
-        $bag->replace(array('NOPE' => 'BAR'));
-        $this->assertEquals(array('nope' => array('BAR')), $bag->all(), '->replace() replaces the input with the argument');
+        $bag->replace(['NOPE' => 'BAR']);
+        $this->assertEquals(['nope' => ['BAR']], $bag->all(), '->replace() replaces the input with the argument');
         $this->assertFalse($bag->has('foo'), '->replace() overrides previously set the input');
     }
 
     public function testGet()
     {
-        $bag = new HeaderBag(array('foo' => 'bar', 'fuzz' => 'bizz'));
+        $bag = new HeaderBag(['foo' => 'bar', 'fuzz' => 'bizz']);
         $this->assertEquals('bar', $bag->get('foo'), '->get return current value');
         $this->assertEquals('bar', $bag->get('FoO'), '->get key in case insensitive');
-        $this->assertEquals(array('bar'), $bag->get('foo', 'nope', false), '->get return the value as array');
+        $this->assertEquals(['bar'], $bag->get('foo', 'nope', false), '->get return the value as array');
 
         // defaults
         $this->assertNull($bag->get('none'), '->get unknown values returns null');
         $this->assertEquals('default', $bag->get('none', 'default'), '->get unknown values returns default');
-        $this->assertEquals(array('default'), $bag->get('none', 'default', false), '->get unknown values returns default as array');
+        $this->assertEquals(['default'], $bag->get('none', 'default', false), '->get unknown values returns default as array');
 
         $bag->set('foo', 'bor', false);
         $this->assertEquals('bar', $bag->get('foo'), '->get return first value');
-        $this->assertEquals(array('bar', 'bor'), $bag->get('foo', 'nope', false), '->get return all values as array');
+        $this->assertEquals(['bar', 'bor'], $bag->get('foo', 'nope', false), '->get return all values as array');
     }
 
     public function testSetAssociativeArray()
     {
         $bag = new HeaderBag();
-        $bag->set('foo', array('bad-assoc-index' => 'value'));
+        $bag->set('foo', ['bad-assoc-index' => 'value']);
         $this->assertSame('value', $bag->get('foo'));
-        $this->assertEquals(array('value'), $bag->get('foo', 'nope', false), 'assoc indices of multi-valued headers are ignored');
+        $this->assertEquals(['value'], $bag->get('foo', 'nope', false), 'assoc indices of multi-valued headers are ignored');
     }
 
     public function testContains()
     {
-        $bag = new HeaderBag(array('foo' => 'bar', 'fuzz' => 'bizz'));
+        $bag = new HeaderBag(['foo' => 'bar', 'fuzz' => 'bizz']);
         $this->assertTrue($bag->contains('foo', 'bar'), '->contains first value');
         $this->assertTrue($bag->contains('fuzz', 'bizz'), '->contains second value');
         $this->assertFalse($bag->contains('nope', 'nope'), '->contains unknown value');
@@ -143,7 +143,7 @@ public function testCacheControlDirectiveAccessors()
 
     public function testCacheControlDirectiveParsing()
     {
-        $bag = new HeaderBag(array('cache-control' => 'public, max-age=10'));
+        $bag = new HeaderBag(['cache-control' => 'public, max-age=10']);
         $this->assertTrue($bag->hasCacheControlDirective('public'));
         $this->assertTrue($bag->getCacheControlDirective('public'));
 
@@ -156,15 +156,15 @@ public function testCacheControlDirectiveParsing()
 
     public function testCacheControlDirectiveParsingQuotedZero()
     {
-        $bag = new HeaderBag(array('cache-control' => 'max-age="0"'));
+        $bag = new HeaderBag(['cache-control' => 'max-age="0"']);
         $this->assertTrue($bag->hasCacheControlDirective('max-age'));
         $this->assertEquals(0, $bag->getCacheControlDirective('max-age'));
     }
 
     public function testCacheControlDirectiveOverrideWithReplace()
     {
-        $bag = new HeaderBag(array('cache-control' => 'private, max-age=100'));
-        $bag->replace(array('cache-control' => 'public, max-age=10'));
+        $bag = new HeaderBag(['cache-control' => 'private, max-age=100']);
+        $bag->replace(['cache-control' => 'public, max-age=10']);
         $this->assertTrue($bag->hasCacheControlDirective('public'));
         $this->assertTrue($bag->getCacheControlDirective('public'));
 
@@ -174,7 +174,7 @@ public function testCacheControlDirectiveOverrideWithReplace()
 
     public function testCacheControlClone()
     {
-        $headers = array('foo' => 'bar');
+        $headers = ['foo' => 'bar'];
         $bag1 = new HeaderBag($headers);
         $bag2 = new HeaderBag($bag1->all());
 
@@ -183,13 +183,13 @@ public function testCacheControlClone()
 
     public function testGetIterator()
     {
-        $headers = array('foo' => 'bar', 'hello' => 'world', 'third' => 'charm');
+        $headers = ['foo' => 'bar', 'hello' => 'world', 'third' => 'charm'];
         $headerBag = new HeaderBag($headers);
 
         $i = 0;
         foreach ($headerBag as $key => $val) {
             ++$i;
-            $this->assertEquals(array($headers[$key]), $val);
+            $this->assertEquals([$headers[$key]], $val);
         }
 
         $this->assertEquals(\count($headers), $i);
@@ -197,7 +197,7 @@ public function testGetIterator()
 
     public function testCount()
     {
-        $headers = array('foo' => 'bar', 'HELLO' => 'WORLD');
+        $headers = ['foo' => 'bar', 'HELLO' => 'WORLD'];
         $headerBag = new HeaderBag($headers);
 
         $this->assertCount(\count($headers), $headerBag);
diff --git a/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php b/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
index 232a2040ff63..c7f76b5de292 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
@@ -26,20 +26,20 @@ public function testIpv4($matches, $remoteAddr, $cidr)
 
     public function getIpv4Data()
     {
-        return array(
-            array(true, '192.168.1.1', '192.168.1.1'),
-            array(true, '192.168.1.1', '192.168.1.1/1'),
-            array(true, '192.168.1.1', '192.168.1.0/24'),
-            array(false, '192.168.1.1', '1.2.3.4/1'),
-            array(false, '192.168.1.1', '192.168.1.1/33'), // invalid subnet
-            array(true, '192.168.1.1', array('1.2.3.4/1', '192.168.1.0/24')),
-            array(true, '192.168.1.1', array('192.168.1.0/24', '1.2.3.4/1')),
-            array(false, '192.168.1.1', array('1.2.3.4/1', '4.3.2.1/1')),
-            array(true, '1.2.3.4', '0.0.0.0/0'),
-            array(true, '1.2.3.4', '192.168.1.0/0'),
-            array(false, '1.2.3.4', '256.256.256/0'), // invalid CIDR notation
-            array(false, 'an_invalid_ip', '192.168.1.0/24'),
-        );
+        return [
+            [true, '192.168.1.1', '192.168.1.1'],
+            [true, '192.168.1.1', '192.168.1.1/1'],
+            [true, '192.168.1.1', '192.168.1.0/24'],
+            [false, '192.168.1.1', '1.2.3.4/1'],
+            [false, '192.168.1.1', '192.168.1.1/33'], // invalid subnet
+            [true, '192.168.1.1', ['1.2.3.4/1', '192.168.1.0/24']],
+            [true, '192.168.1.1', ['192.168.1.0/24', '1.2.3.4/1']],
+            [false, '192.168.1.1', ['1.2.3.4/1', '4.3.2.1/1']],
+            [true, '1.2.3.4', '0.0.0.0/0'],
+            [true, '1.2.3.4', '192.168.1.0/0'],
+            [false, '1.2.3.4', '256.256.256/0'], // invalid CIDR notation
+            [false, 'an_invalid_ip', '192.168.1.0/24'],
+        ];
     }
 
     /**
@@ -56,20 +56,20 @@ public function testIpv6($matches, $remoteAddr, $cidr)
 
     public function getIpv6Data()
     {
-        return array(
-            array(true, '2a01:198:603:0:396e:4789:8e99:890f', '2a01:198:603:0::/65'),
-            array(false, '2a00:198:603:0:396e:4789:8e99:890f', '2a01:198:603:0::/65'),
-            array(false, '2a01:198:603:0:396e:4789:8e99:890f', '::1'),
-            array(true, '0:0:0:0:0:0:0:1', '::1'),
-            array(false, '0:0:603:0:396e:4789:8e99:0001', '::1'),
-            array(true, '0:0:603:0:396e:4789:8e99:0001', '::/0'),
-            array(true, '0:0:603:0:396e:4789:8e99:0001', '2a01:198:603:0::/0'),
-            array(true, '2a01:198:603:0:396e:4789:8e99:890f', array('::1', '2a01:198:603:0::/65')),
-            array(true, '2a01:198:603:0:396e:4789:8e99:890f', array('2a01:198:603:0::/65', '::1')),
-            array(false, '2a01:198:603:0:396e:4789:8e99:890f', array('::1', '1a01:198:603:0::/65')),
-            array(false, '}__test|O:21:&quot;JDatabaseDriverMysqli&quot;:3:{s:2', '::1'),
-            array(false, '2a01:198:603:0:396e:4789:8e99:890f', 'unknown'),
-        );
+        return [
+            [true, '2a01:198:603:0:396e:4789:8e99:890f', '2a01:198:603:0::/65'],
+            [false, '2a00:198:603:0:396e:4789:8e99:890f', '2a01:198:603:0::/65'],
+            [false, '2a01:198:603:0:396e:4789:8e99:890f', '::1'],
+            [true, '0:0:0:0:0:0:0:1', '::1'],
+            [false, '0:0:603:0:396e:4789:8e99:0001', '::1'],
+            [true, '0:0:603:0:396e:4789:8e99:0001', '::/0'],
+            [true, '0:0:603:0:396e:4789:8e99:0001', '2a01:198:603:0::/0'],
+            [true, '2a01:198:603:0:396e:4789:8e99:890f', ['::1', '2a01:198:603:0::/65']],
+            [true, '2a01:198:603:0:396e:4789:8e99:890f', ['2a01:198:603:0::/65', '::1']],
+            [false, '2a01:198:603:0:396e:4789:8e99:890f', ['::1', '1a01:198:603:0::/65']],
+            [false, '}__test|O:21:&quot;JDatabaseDriverMysqli&quot;:3:{s:2', '::1'],
+            [false, '2a01:198:603:0:396e:4789:8e99:890f', 'unknown'],
+        ];
     }
 
     /**
@@ -95,10 +95,10 @@ public function testInvalidIpAddressesDoNotMatch($requestIp, $proxyIp)
 
     public function invalidIpAddressData()
     {
-        return array(
-            'invalid proxy wildcard' => array('192.168.20.13', '*'),
-            'invalid proxy missing netmask' => array('192.168.20.13', '0.0.0.0'),
-            'invalid request IP with invalid proxy wildcard' => array('0.0.0.0', '*'),
-        );
+        return [
+            'invalid proxy wildcard' => ['192.168.20.13', '*'],
+            'invalid proxy missing netmask' => ['192.168.20.13', '0.0.0.0'],
+            'invalid request IP with invalid proxy wildcard' => ['0.0.0.0', '*'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/JsonResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/JsonResponseTest.php
index 6687fde5be51..5425896dfa3b 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/JsonResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/JsonResponseTest.php
@@ -33,13 +33,13 @@ public function testConstructorEmptyCreatesJsonObject()
 
     public function testConstructorWithArrayCreatesJsonArray()
     {
-        $response = new JsonResponse(array(0, 1, 2, 3));
+        $response = new JsonResponse([0, 1, 2, 3]);
         $this->assertSame('[0,1,2,3]', $response->getContent());
     }
 
     public function testConstructorWithAssocArrayCreatesJsonObject()
     {
-        $response = new JsonResponse(array('foo' => 'bar'));
+        $response = new JsonResponse(['foo' => 'bar']);
         $this->assertSame('{"foo":"bar"}', $response->getContent());
     }
 
@@ -60,7 +60,7 @@ public function testConstructorWithSimpleTypes()
 
     public function testConstructorWithCustomStatus()
     {
-        $response = new JsonResponse(array(), 202);
+        $response = new JsonResponse([], 202);
         $this->assertSame(202, $response->getStatusCode());
     }
 
@@ -72,35 +72,35 @@ public function testConstructorAddsContentTypeHeader()
 
     public function testConstructorWithCustomHeaders()
     {
-        $response = new JsonResponse(array(), 200, array('ETag' => 'foo'));
+        $response = new JsonResponse([], 200, ['ETag' => 'foo']);
         $this->assertSame('application/json', $response->headers->get('Content-Type'));
         $this->assertSame('foo', $response->headers->get('ETag'));
     }
 
     public function testConstructorWithCustomContentType()
     {
-        $headers = array('Content-Type' => 'application/vnd.acme.blog-v1+json');
+        $headers = ['Content-Type' => 'application/vnd.acme.blog-v1+json'];
 
-        $response = new JsonResponse(array(), 200, $headers);
+        $response = new JsonResponse([], 200, $headers);
         $this->assertSame('application/vnd.acme.blog-v1+json', $response->headers->get('Content-Type'));
     }
 
     public function testSetJson()
     {
-        $response = new JsonResponse('1', 200, array(), true);
+        $response = new JsonResponse('1', 200, [], true);
         $this->assertEquals('1', $response->getContent());
 
-        $response = new JsonResponse('[1]', 200, array(), true);
+        $response = new JsonResponse('[1]', 200, [], true);
         $this->assertEquals('[1]', $response->getContent());
 
-        $response = new JsonResponse(null, 200, array());
+        $response = new JsonResponse(null, 200, []);
         $response->setJson('true');
         $this->assertEquals('true', $response->getContent());
     }
 
     public function testCreate()
     {
-        $response = JsonResponse::create(array('foo' => 'bar'), 204);
+        $response = JsonResponse::create(['foo' => 'bar'], 204);
 
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\JsonResponse', $response);
         $this->assertEquals('{"foo":"bar"}', $response->getContent());
@@ -116,14 +116,14 @@ public function testStaticCreateEmptyJsonObject()
 
     public function testStaticCreateJsonArray()
     {
-        $response = JsonResponse::create(array(0, 1, 2, 3));
+        $response = JsonResponse::create([0, 1, 2, 3]);
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\JsonResponse', $response);
         $this->assertSame('[0,1,2,3]', $response->getContent());
     }
 
     public function testStaticCreateJsonObject()
     {
-        $response = JsonResponse::create(array('foo' => 'bar'));
+        $response = JsonResponse::create(['foo' => 'bar']);
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\JsonResponse', $response);
         $this->assertSame('{"foo":"bar"}', $response->getContent());
     }
@@ -149,7 +149,7 @@ public function testStaticCreateWithSimpleTypes()
 
     public function testStaticCreateWithCustomStatus()
     {
-        $response = JsonResponse::create(array(), 202);
+        $response = JsonResponse::create([], 202);
         $this->assertSame(202, $response->getStatusCode());
     }
 
@@ -161,22 +161,22 @@ public function testStaticCreateAddsContentTypeHeader()
 
     public function testStaticCreateWithCustomHeaders()
     {
-        $response = JsonResponse::create(array(), 200, array('ETag' => 'foo'));
+        $response = JsonResponse::create([], 200, ['ETag' => 'foo']);
         $this->assertSame('application/json', $response->headers->get('Content-Type'));
         $this->assertSame('foo', $response->headers->get('ETag'));
     }
 
     public function testStaticCreateWithCustomContentType()
     {
-        $headers = array('Content-Type' => 'application/vnd.acme.blog-v1+json');
+        $headers = ['Content-Type' => 'application/vnd.acme.blog-v1+json'];
 
-        $response = JsonResponse::create(array(), 200, $headers);
+        $response = JsonResponse::create([], 200, $headers);
         $this->assertSame('application/vnd.acme.blog-v1+json', $response->headers->get('Content-Type'));
     }
 
     public function testSetCallback()
     {
-        $response = JsonResponse::create(array('foo' => 'bar'))->setCallback('callback');
+        $response = JsonResponse::create(['foo' => 'bar'])->setCallback('callback');
 
         $this->assertEquals('/**/callback({"foo":"bar"});', $response->getContent());
         $this->assertEquals('text/javascript', $response->headers->get('Content-Type'));
@@ -199,7 +199,7 @@ public function testGetEncodingOptions()
     public function testSetEncodingOptions()
     {
         $response = new JsonResponse();
-        $response->setData(array(array(1, 2, 3)));
+        $response->setData([[1, 2, 3]]);
 
         $this->assertEquals('[[1,2,3]]', $response->getContent());
 
@@ -248,7 +248,7 @@ public function testSetContentJsonSerializeError()
 
     public function testSetComplexCallback()
     {
-        $response = JsonResponse::create(array('foo' => 'bar'));
+        $response = JsonResponse::create(['foo' => 'bar']);
         $response->setCallback('ಠ_ಠ["foo"].bar[0]');
 
         $this->assertEquals('/**/ಠ_ಠ["foo"].bar[0]({"foo":"bar"});', $response->getContent());
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ParameterBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/ParameterBagTest.php
index dccfd4f30868..d2a5c991cc7f 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ParameterBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ParameterBagTest.php
@@ -23,44 +23,44 @@ public function testConstructor()
 
     public function testAll()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $bag->all(), '->all() gets all the input');
+        $bag = new ParameterBag(['foo' => 'bar']);
+        $this->assertEquals(['foo' => 'bar'], $bag->all(), '->all() gets all the input');
     }
 
     public function testKeys()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
-        $this->assertEquals(array('foo'), $bag->keys());
+        $bag = new ParameterBag(['foo' => 'bar']);
+        $this->assertEquals(['foo'], $bag->keys());
     }
 
     public function testAdd()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
-        $bag->add(array('bar' => 'bas'));
-        $this->assertEquals(array('foo' => 'bar', 'bar' => 'bas'), $bag->all());
+        $bag = new ParameterBag(['foo' => 'bar']);
+        $bag->add(['bar' => 'bas']);
+        $this->assertEquals(['foo' => 'bar', 'bar' => 'bas'], $bag->all());
     }
 
     public function testRemove()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
-        $bag->add(array('bar' => 'bas'));
-        $this->assertEquals(array('foo' => 'bar', 'bar' => 'bas'), $bag->all());
+        $bag = new ParameterBag(['foo' => 'bar']);
+        $bag->add(['bar' => 'bas']);
+        $this->assertEquals(['foo' => 'bar', 'bar' => 'bas'], $bag->all());
         $bag->remove('bar');
-        $this->assertEquals(array('foo' => 'bar'), $bag->all());
+        $this->assertEquals(['foo' => 'bar'], $bag->all());
     }
 
     public function testReplace()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
 
-        $bag->replace(array('FOO' => 'BAR'));
-        $this->assertEquals(array('FOO' => 'BAR'), $bag->all(), '->replace() replaces the input with the argument');
+        $bag->replace(['FOO' => 'BAR']);
+        $this->assertEquals(['FOO' => 'BAR'], $bag->all(), '->replace() replaces the input with the argument');
         $this->assertFalse($bag->has('foo'), '->replace() overrides previously set the input');
     }
 
     public function testGet()
     {
-        $bag = new ParameterBag(array('foo' => 'bar', 'null' => null));
+        $bag = new ParameterBag(['foo' => 'bar', 'null' => null]);
 
         $this->assertEquals('bar', $bag->get('foo'), '->get() gets the value of a parameter');
         $this->assertEquals('default', $bag->get('unknown', 'default'), '->get() returns second argument as default if a parameter is not defined');
@@ -69,14 +69,14 @@ public function testGet()
 
     public function testGetDoesNotUseDeepByDefault()
     {
-        $bag = new ParameterBag(array('foo' => array('bar' => 'moo')));
+        $bag = new ParameterBag(['foo' => ['bar' => 'moo']]);
 
         $this->assertNull($bag->get('foo[bar]'));
     }
 
     public function testSet()
     {
-        $bag = new ParameterBag(array());
+        $bag = new ParameterBag([]);
 
         $bag->set('foo', 'bar');
         $this->assertEquals('bar', $bag->get('foo'), '->set() sets the value of parameter');
@@ -87,7 +87,7 @@ public function testSet()
 
     public function testHas()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
 
         $this->assertTrue($bag->has('foo'), '->has() returns true if a parameter is defined');
         $this->assertFalse($bag->has('unknown'), '->has() return false if a parameter is not defined');
@@ -95,7 +95,7 @@ public function testHas()
 
     public function testGetAlpha()
     {
-        $bag = new ParameterBag(array('word' => 'foo_BAR_012'));
+        $bag = new ParameterBag(['word' => 'foo_BAR_012']);
 
         $this->assertEquals('fooBAR', $bag->getAlpha('word'), '->getAlpha() gets only alphabetic characters');
         $this->assertEquals('', $bag->getAlpha('unknown'), '->getAlpha() returns empty string if a parameter is not defined');
@@ -103,7 +103,7 @@ public function testGetAlpha()
 
     public function testGetAlnum()
     {
-        $bag = new ParameterBag(array('word' => 'foo_BAR_012'));
+        $bag = new ParameterBag(['word' => 'foo_BAR_012']);
 
         $this->assertEquals('fooBAR012', $bag->getAlnum('word'), '->getAlnum() gets only alphanumeric characters');
         $this->assertEquals('', $bag->getAlnum('unknown'), '->getAlnum() returns empty string if a parameter is not defined');
@@ -111,7 +111,7 @@ public function testGetAlnum()
 
     public function testGetDigits()
     {
-        $bag = new ParameterBag(array('word' => 'foo_BAR_012'));
+        $bag = new ParameterBag(['word' => 'foo_BAR_012']);
 
         $this->assertEquals('012', $bag->getDigits('word'), '->getDigits() gets only digits as string');
         $this->assertEquals('', $bag->getDigits('unknown'), '->getDigits() returns empty string if a parameter is not defined');
@@ -119,7 +119,7 @@ public function testGetDigits()
 
     public function testGetInt()
     {
-        $bag = new ParameterBag(array('digits' => '0123'));
+        $bag = new ParameterBag(['digits' => '0123']);
 
         $this->assertEquals(123, $bag->getInt('digits'), '->getInt() gets a value of parameter as integer');
         $this->assertEquals(0, $bag->getInt('unknown'), '->getInt() returns zero if a parameter is not defined');
@@ -127,14 +127,14 @@ public function testGetInt()
 
     public function testFilter()
     {
-        $bag = new ParameterBag(array(
+        $bag = new ParameterBag([
             'digits' => '0123ab',
             'email' => 'example@example.com',
             'url' => 'http://example.com/foo',
             'dec' => '256',
             'hex' => '0x100',
-            'array' => array('bang'),
-            ));
+            'array' => ['bang'],
+            ]);
 
         $this->assertEmpty($bag->filter('nokey'), '->filter() should return empty by default if no key is found');
 
@@ -142,27 +142,27 @@ public function testFilter()
 
         $this->assertEquals('example@example.com', $bag->filter('email', '', FILTER_VALIDATE_EMAIL), '->filter() gets a value of parameter as email');
 
-        $this->assertEquals('http://example.com/foo', $bag->filter('url', '', FILTER_VALIDATE_URL, array('flags' => FILTER_FLAG_PATH_REQUIRED)), '->filter() gets a value of parameter as URL with a path');
+        $this->assertEquals('http://example.com/foo', $bag->filter('url', '', FILTER_VALIDATE_URL, ['flags' => FILTER_FLAG_PATH_REQUIRED]), '->filter() gets a value of parameter as URL with a path');
 
         // This test is repeated for code-coverage
         $this->assertEquals('http://example.com/foo', $bag->filter('url', '', FILTER_VALIDATE_URL, FILTER_FLAG_PATH_REQUIRED), '->filter() gets a value of parameter as URL with a path');
 
-        $this->assertFalse($bag->filter('dec', '', FILTER_VALIDATE_INT, array(
+        $this->assertFalse($bag->filter('dec', '', FILTER_VALIDATE_INT, [
             'flags' => FILTER_FLAG_ALLOW_HEX,
-            'options' => array('min_range' => 1, 'max_range' => 0xff),
-        )), '->filter() gets a value of parameter as integer between boundaries');
+            'options' => ['min_range' => 1, 'max_range' => 0xff],
+        ]), '->filter() gets a value of parameter as integer between boundaries');
 
-        $this->assertFalse($bag->filter('hex', '', FILTER_VALIDATE_INT, array(
+        $this->assertFalse($bag->filter('hex', '', FILTER_VALIDATE_INT, [
             'flags' => FILTER_FLAG_ALLOW_HEX,
-            'options' => array('min_range' => 1, 'max_range' => 0xff),
-        )), '->filter() gets a value of parameter as integer between boundaries');
+            'options' => ['min_range' => 1, 'max_range' => 0xff],
+        ]), '->filter() gets a value of parameter as integer between boundaries');
 
-        $this->assertEquals(array('bang'), $bag->filter('array', ''), '->filter() gets a value of parameter as an array');
+        $this->assertEquals(['bang'], $bag->filter('array', ''), '->filter() gets a value of parameter as an array');
     }
 
     public function testGetIterator()
     {
-        $parameters = array('foo' => 'bar', 'hello' => 'world');
+        $parameters = ['foo' => 'bar', 'hello' => 'world'];
         $bag = new ParameterBag($parameters);
 
         $i = 0;
@@ -176,7 +176,7 @@ public function testGetIterator()
 
     public function testCount()
     {
-        $parameters = array('foo' => 'bar', 'hello' => 'world');
+        $parameters = ['foo' => 'bar', 'hello' => 'world'];
         $bag = new ParameterBag($parameters);
 
         $this->assertCount(\count($parameters), $bag);
@@ -184,7 +184,7 @@ public function testCount()
 
     public function testGetBoolean()
     {
-        $parameters = array('string_true' => 'true', 'string_false' => 'false');
+        $parameters = ['string_true' => 'true', 'string_false' => 'false'];
         $bag = new ParameterBag($parameters);
 
         $this->assertTrue($bag->getBoolean('string_true'), '->getBoolean() gets the string true as boolean true');
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
index d389e83dbe14..64c3e73ee21a 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RedirectResponseTest.php
@@ -22,7 +22,7 @@ public function testGenerateMetaRedirect()
 
         $this->assertEquals(1, preg_match(
             '#<meta http-equiv="refresh" content="\d+;url=foo\.bar" />#',
-            preg_replace(array('/\s+/', '/\'/'), array(' ', '"'), $response->getContent())
+            preg_replace(['/\s+/', '/\'/'], [' ', '"'], $response->getContent())
         ));
     }
 
@@ -87,7 +87,7 @@ public function testCacheHeaders()
         $response = new RedirectResponse('foo.bar', 301);
         $this->assertFalse($response->headers->hasCacheControlDirective('no-cache'));
 
-        $response = new RedirectResponse('foo.bar', 301, array('cache-control' => 'max-age=86400'));
+        $response = new RedirectResponse('foo.bar', 301, ['cache-control' => 'max-age=86400']);
         $this->assertFalse($response->headers->hasCacheControlDirective('no-cache'));
         $this->assertTrue($response->headers->hasCacheControlDirective('max-age'));
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestMatcherTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestMatcherTest.php
index 10d764a776bb..7fb6925bbc7b 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestMatcherTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestMatcherTest.php
@@ -34,20 +34,20 @@ public function testMethod($requestMethod, $matcherMethod, $isMatch)
 
     public function getMethodData()
     {
-        return array(
-            array('get', 'get', true),
-            array('get', array('get', 'post'), true),
-            array('get', 'post', false),
-            array('get', 'GET', true),
-            array('get', array('GET', 'POST'), true),
-            array('get', 'POST', false),
-        );
+        return [
+            ['get', 'get', true],
+            ['get', ['get', 'post'], true],
+            ['get', 'post', false],
+            ['get', 'GET', true],
+            ['get', ['GET', 'POST'], true],
+            ['get', 'POST', false],
+        ];
     }
 
     public function testScheme()
     {
         $httpRequest = $request = $request = Request::create('');
-        $httpsRequest = $request = $request = Request::create('', 'get', array(), array(), array(), array('HTTPS' => 'on'));
+        $httpsRequest = $request = $request = Request::create('', 'get', [], [], [], ['HTTPS' => 'on']);
 
         $matcher = new RequestMatcher();
         $matcher->matchScheme('https');
@@ -69,7 +69,7 @@ public function testScheme()
     public function testHost($pattern, $isMatch)
     {
         $matcher = new RequestMatcher();
-        $request = Request::create('', 'get', array(), array(), array(), array('HTTP_HOST' => 'foo.example.com'));
+        $request = Request::create('', 'get', [], [], [], ['HTTP_HOST' => 'foo.example.com']);
 
         $matcher->matchHost($pattern);
         $this->assertSame($isMatch, $matcher->matches($request));
@@ -80,16 +80,16 @@ public function testHost($pattern, $isMatch)
 
     public function getHostData()
     {
-        return array(
-            array('.*\.example\.com', true),
-            array('\.example\.com$', true),
-            array('^.*\.example\.com$', true),
-            array('.*\.sensio\.com', false),
-            array('.*\.example\.COM', true),
-            array('\.example\.COM$', true),
-            array('^.*\.example\.COM$', true),
-            array('.*\.sensio\.COM', false),
-        );
+        return [
+            ['.*\.example\.com', true],
+            ['\.example\.com$', true],
+            ['^.*\.example\.com$', true],
+            ['.*\.sensio\.com', false],
+            ['.*\.example\.COM', true],
+            ['\.example\.COM$', true],
+            ['^.*\.example\.COM$', true],
+            ['.*\.sensio\.COM', false],
+        ];
     }
 
     public function testPath()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index f2c8f94f7723..505f271eabf9 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -21,24 +21,24 @@ class RequestTest extends TestCase
 {
     protected function tearDown()
     {
-        Request::setTrustedProxies(array(), -1);
-        Request::setTrustedHosts(array());
+        Request::setTrustedProxies([], -1);
+        Request::setTrustedHosts([]);
     }
 
     public function testInitialize()
     {
         $request = new Request();
 
-        $request->initialize(array('foo' => 'bar'));
+        $request->initialize(['foo' => 'bar']);
         $this->assertEquals('bar', $request->query->get('foo'), '->initialize() takes an array of query parameters as its first argument');
 
-        $request->initialize(array(), array('foo' => 'bar'));
+        $request->initialize([], ['foo' => 'bar']);
         $this->assertEquals('bar', $request->request->get('foo'), '->initialize() takes an array of request parameters as its second argument');
 
-        $request->initialize(array(), array(), array('foo' => 'bar'));
+        $request->initialize([], [], ['foo' => 'bar']);
         $this->assertEquals('bar', $request->attributes->get('foo'), '->initialize() takes an array of attributes as its third argument');
 
-        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_FOO' => 'bar'));
+        $request->initialize([], [], [], [], [], ['HTTP_FOO' => 'bar']);
         $this->assertEquals('bar', $request->headers->get('FOO'), '->initialize() takes an array of HTTP headers as its sixth argument');
     }
 
@@ -101,7 +101,7 @@ public function testCreate()
         $this->assertEquals('test.com', $request->getHttpHost());
         $this->assertFalse($request->isSecure());
 
-        $request = Request::create('http://test.com/foo', 'GET', array('bar' => 'baz'));
+        $request = Request::create('http://test.com/foo', 'GET', ['bar' => 'baz']);
         $this->assertEquals('http://test.com/foo?bar=baz', $request->getUri());
         $this->assertEquals('/foo', $request->getPathInfo());
         $this->assertEquals('bar=baz', $request->getQueryString());
@@ -109,7 +109,7 @@ public function testCreate()
         $this->assertEquals('test.com', $request->getHttpHost());
         $this->assertFalse($request->isSecure());
 
-        $request = Request::create('http://test.com/foo?bar=foo', 'GET', array('bar' => 'baz'));
+        $request = Request::create('http://test.com/foo?bar=foo', 'GET', ['bar' => 'baz']);
         $this->assertEquals('http://test.com/foo?bar=baz', $request->getUri());
         $this->assertEquals('/foo', $request->getPathInfo());
         $this->assertEquals('bar=baz', $request->getQueryString());
@@ -166,7 +166,7 @@ public function testCreate()
         $this->assertTrue($request->isSecure());
 
         $json = '{"jsonrpc":"2.0","method":"echo","id":7,"params":["Hello World"]}';
-        $request = Request::create('http://example.com/jsonrpc', 'POST', array(), array(), array(), array(), $json);
+        $request = Request::create('http://example.com/jsonrpc', 'POST', [], [], [], [], $json);
         $this->assertEquals($json, $request->getContent());
         $this->assertFalse($request->isSecure());
 
@@ -216,16 +216,16 @@ public function testCreate()
 
         $request = Request::create('http://test.com/?foo');
         $this->assertEquals('/?foo', $request->getRequestUri());
-        $this->assertEquals(array('foo' => ''), $request->query->all());
+        $this->assertEquals(['foo' => ''], $request->query->all());
 
         // assume rewrite rule: (.*) --> app/app.php; app/ is a symlink to a symfony web/ directory
-        $request = Request::create('http://test.com/apparthotel-1234', 'GET', array(), array(), array(),
-            array(
+        $request = Request::create('http://test.com/apparthotel-1234', 'GET', [], [], [],
+            [
                 'DOCUMENT_ROOT' => '/var/www/www.test.com',
                 'SCRIPT_FILENAME' => '/var/www/www.test.com/app/app.php',
                 'SCRIPT_NAME' => '/app/app.php',
                 'PHP_SELF' => '/app/app.php/apparthotel-1234',
-            ));
+            ]);
         $this->assertEquals('http://test.com/apparthotel-1234', $request->getUri());
         $this->assertEquals('/apparthotel-1234', $request->getPathInfo());
         $this->assertEquals('', $request->getQueryString());
@@ -258,7 +258,7 @@ public function testCreateWithRequestUri()
         $this->assertEquals(8080, $request->getPort());
         $this->assertFalse($request->isSecure());
 
-        $request = Request::create('http://test.com/foo?bar=foo', 'GET', array('bar' => 'baz'));
+        $request = Request::create('http://test.com/foo?bar=foo', 'GET', ['bar' => 'baz']);
         $request->server->set('REQUEST_URI', 'http://test.com/foo?bar=foo');
         $this->assertEquals('http://test.com/foo?bar=baz', $request->getUri());
         $this->assertEquals('/foo', $request->getPathInfo());
@@ -289,13 +289,13 @@ public function testCreateWithRequestUri()
     public function testGetRequestUri($serverRequestUri, $expected, $message)
     {
         $request = new Request();
-        $request->server->add(array(
+        $request->server->add([
             'REQUEST_URI' => $serverRequestUri,
 
             // For having http://test.com
             'SERVER_NAME' => 'test.com',
             'SERVER_PORT' => 80,
-        ));
+        ]);
 
         $this->assertSame($expected, $request->getRequestUri(), $message);
         $this->assertSame($expected, $request->server->get('REQUEST_URI'), 'Normalize the request URI.');
@@ -304,21 +304,21 @@ public function testGetRequestUri($serverRequestUri, $expected, $message)
     public function getRequestUriData()
     {
         $message = 'Do not modify the path.';
-        yield array('/foo', '/foo', $message);
-        yield array('//bar/foo', '//bar/foo', $message);
-        yield array('///bar/foo', '///bar/foo', $message);
+        yield ['/foo', '/foo', $message];
+        yield ['//bar/foo', '//bar/foo', $message];
+        yield ['///bar/foo', '///bar/foo', $message];
 
         $message = 'Handle when the scheme, host are on REQUEST_URI.';
-        yield array('http://test.com/foo?bar=baz', '/foo?bar=baz', $message);
+        yield ['http://test.com/foo?bar=baz', '/foo?bar=baz', $message];
 
         $message = 'Handle when the scheme, host and port are on REQUEST_URI.';
-        yield array('http://test.com:80/foo', '/foo', $message);
-        yield array('https://test.com:8080/foo', '/foo', $message);
-        yield array('https://test.com:443/foo', '/foo', $message);
+        yield ['http://test.com:80/foo', '/foo', $message];
+        yield ['https://test.com:8080/foo', '/foo', $message];
+        yield ['https://test.com:443/foo', '/foo', $message];
 
         $message = 'Fragment should not be included in the URI';
-        yield array('http://test.com/foo#bar', '/foo', $message);
-        yield array('/foo#bar', '/foo', $message);
+        yield ['http://test.com/foo#bar', '/foo', $message];
+        yield ['/foo#bar', '/foo', $message];
     }
 
     public function testGetRequestUriWithoutRequiredHeader()
@@ -335,7 +335,7 @@ public function testGetRequestUriWithoutRequiredHeader()
     public function testCreateCheckPrecedence()
     {
         // server is used by default
-        $request = Request::create('/', 'DELETE', array(), array(), array(), array(
+        $request = Request::create('/', 'DELETE', [], [], [], [
             'HTTP_HOST' => 'example.com',
             'HTTPS' => 'on',
             'SERVER_PORT' => 443,
@@ -343,7 +343,7 @@ public function testCreateCheckPrecedence()
             'PHP_AUTH_PW' => 'pa$$',
             'QUERY_STRING' => 'foo=bar',
             'CONTENT_TYPE' => 'application/json',
-        ));
+        ]);
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(443, $request->getPort());
         $this->assertTrue($request->isSecure());
@@ -353,11 +353,11 @@ public function testCreateCheckPrecedence()
         $this->assertEquals('application/json', $request->headers->get('CONTENT_TYPE'));
 
         // URI has precedence over server
-        $request = Request::create('http://thomas:pokemon@example.net:8080/?foo=bar', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://thomas:pokemon@example.net:8080/?foo=bar', 'GET', [], [], [], [
             'HTTP_HOST' => 'example.com',
             'HTTPS' => 'on',
             'SERVER_PORT' => 443,
-        ));
+        ]);
         $this->assertEquals('example.net', $request->getHost());
         $this->assertEquals(8080, $request->getPort());
         $this->assertFalse($request->isSecure());
@@ -368,7 +368,7 @@ public function testCreateCheckPrecedence()
 
     public function testDuplicate()
     {
-        $request = new Request(array('foo' => 'bar'), array('foo' => 'bar'), array('foo' => 'bar'), array(), array(), array('HTTP_FOO' => 'bar'));
+        $request = new Request(['foo' => 'bar'], ['foo' => 'bar'], ['foo' => 'bar'], [], [], ['HTTP_FOO' => 'bar']);
         $dup = $request->duplicate();
 
         $this->assertEquals($request->query->all(), $dup->query->all(), '->duplicate() duplicates a request an copy the current query parameters');
@@ -376,17 +376,17 @@ public function testDuplicate()
         $this->assertEquals($request->attributes->all(), $dup->attributes->all(), '->duplicate() duplicates a request an copy the current attributes');
         $this->assertEquals($request->headers->all(), $dup->headers->all(), '->duplicate() duplicates a request an copy the current HTTP headers');
 
-        $dup = $request->duplicate(array('foo' => 'foobar'), array('foo' => 'foobar'), array('foo' => 'foobar'), array(), array(), array('HTTP_FOO' => 'foobar'));
+        $dup = $request->duplicate(['foo' => 'foobar'], ['foo' => 'foobar'], ['foo' => 'foobar'], [], [], ['HTTP_FOO' => 'foobar']);
 
-        $this->assertEquals(array('foo' => 'foobar'), $dup->query->all(), '->duplicate() overrides the query parameters if provided');
-        $this->assertEquals(array('foo' => 'foobar'), $dup->request->all(), '->duplicate() overrides the request parameters if provided');
-        $this->assertEquals(array('foo' => 'foobar'), $dup->attributes->all(), '->duplicate() overrides the attributes if provided');
-        $this->assertEquals(array('foo' => array('foobar')), $dup->headers->all(), '->duplicate() overrides the HTTP header if provided');
+        $this->assertEquals(['foo' => 'foobar'], $dup->query->all(), '->duplicate() overrides the query parameters if provided');
+        $this->assertEquals(['foo' => 'foobar'], $dup->request->all(), '->duplicate() overrides the request parameters if provided');
+        $this->assertEquals(['foo' => 'foobar'], $dup->attributes->all(), '->duplicate() overrides the attributes if provided');
+        $this->assertEquals(['foo' => ['foobar']], $dup->headers->all(), '->duplicate() overrides the HTTP header if provided');
     }
 
     public function testDuplicateWithFormat()
     {
-        $request = new Request(array(), array(), array('_format' => 'json'));
+        $request = new Request([], [], ['_format' => 'json']);
         $dup = $request->duplicate();
 
         $this->assertEquals('json', $dup->getRequestFormat());
@@ -421,7 +421,7 @@ public function testGetFormatFromMimeType($format, $mimeTypes)
     public function getFormatToMimeTypeMapProviderWithAdditionalNullFormat()
     {
         return array_merge(
-            array(array(null, array(null, 'unexistent-mime-type'))),
+            [[null, [null, 'unexistent-mime-type']]],
             $this->getFormatToMimeTypeMapProvider()
         );
     }
@@ -456,7 +456,7 @@ public function testGetMimeTypesFromInexistentFormat()
     {
         $request = new Request();
         $this->assertNull($request->getMimeType('foo'));
-        $this->assertEquals(array(), Request::getMimeTypes('foo'));
+        $this->assertEquals([], Request::getMimeTypes('foo'));
     }
 
     public function testGetFormatWithCustomMimeType()
@@ -468,21 +468,21 @@ public function testGetFormatWithCustomMimeType()
 
     public function getFormatToMimeTypeMapProvider()
     {
-        return array(
-            array('txt', array('text/plain')),
-            array('js', array('application/javascript', 'application/x-javascript', 'text/javascript')),
-            array('css', array('text/css')),
-            array('json', array('application/json', 'application/x-json')),
-            array('jsonld', array('application/ld+json')),
-            array('xml', array('text/xml', 'application/xml', 'application/x-xml')),
-            array('rdf', array('application/rdf+xml')),
-            array('atom', array('application/atom+xml')),
-        );
+        return [
+            ['txt', ['text/plain']],
+            ['js', ['application/javascript', 'application/x-javascript', 'text/javascript']],
+            ['css', ['text/css']],
+            ['json', ['application/json', 'application/x-json']],
+            ['jsonld', ['application/ld+json']],
+            ['xml', ['text/xml', 'application/xml', 'application/x-xml']],
+            ['rdf', ['application/rdf+xml']],
+            ['atom', ['application/atom+xml']],
+        ];
     }
 
     public function testGetUri()
     {
-        $server = array();
+        $server = [];
 
         // Standard Request on non default PORT
         // http://host:8080/index.php/path/info?query=string
@@ -501,7 +501,7 @@ public function testGetUri()
 
         $request = new Request();
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host:8080/index.php/path/info?query=string', $request->getUri(), '->getUri() with non default port');
 
@@ -510,7 +510,7 @@ public function testGetUri()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host/index.php/path/info?query=string', $request->getUri(), '->getUri() with default port');
 
@@ -519,7 +519,7 @@ public function testGetUri()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://servername/index.php/path/info?query=string', $request->getUri(), '->getUri() with default port without HOST_HEADER');
 
@@ -527,7 +527,7 @@ public function testGetUri()
         //   RewriteCond %{REQUEST_FILENAME} !-f
         //   RewriteRule ^(.*)$ index.php [QSA,L]
         // http://host:8080/path/info?query=string
-        $server = array();
+        $server = [];
         $server['HTTP_HOST'] = 'host:8080';
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '8080';
@@ -541,7 +541,7 @@ public function testGetUri()
         $server['PHP_SELF'] = '/index.php';
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://host:8080/path/info?query=string', $request->getUri(), '->getUri() with rewrite');
 
         // Use std port number
@@ -550,7 +550,7 @@ public function testGetUri()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host/path/info?query=string', $request->getUri(), '->getUri() with rewrite and default port');
 
@@ -559,13 +559,13 @@ public function testGetUri()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://servername/path/info?query=string', $request->getUri(), '->getUri() with rewrite, default port without HOST_HEADER');
 
         // With encoded characters
 
-        $server = array(
+        $server = [
             'HTTP_HOST' => 'host:8080',
             'SERVER_NAME' => 'servername',
             'SERVER_PORT' => '8080',
@@ -575,9 +575,9 @@ public function testGetUri()
             'PATH_TRANSLATED' => 'redirect:/index.php/foo bar/in+fo',
             'PHP_SELF' => '/ba se/index_dev.php/path/info',
             'SCRIPT_FILENAME' => '/some/where/ba se/index_dev.php',
-        );
+        ];
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals(
             'http://host:8080/ba%20se/index_dev.php/foo%20bar/in+fo?query=string',
@@ -587,11 +587,11 @@ public function testGetUri()
         // with user info
 
         $server['PHP_AUTH_USER'] = 'fabien';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://host:8080/ba%20se/index_dev.php/foo%20bar/in+fo?query=string', $request->getUri());
 
         $server['PHP_AUTH_PW'] = 'symfony';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://host:8080/ba%20se/index_dev.php/foo%20bar/in+fo?query=string', $request->getUri());
     }
 
@@ -609,7 +609,7 @@ public function testGetUriForPath()
         $request = Request::create('https://test.com:90/foo?bar=baz');
         $this->assertEquals('https://test.com:90/some/path', $request->getUriForPath('/some/path'));
 
-        $server = array();
+        $server = [];
 
         // Standard Request on non default PORT
         // http://host:8080/index.php/path/info?query=string
@@ -628,7 +628,7 @@ public function testGetUriForPath()
 
         $request = new Request();
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host:8080/index.php/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with non default port');
 
@@ -637,7 +637,7 @@ public function testGetUriForPath()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host/index.php/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with default port');
 
@@ -646,7 +646,7 @@ public function testGetUriForPath()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://servername/index.php/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with default port without HOST_HEADER');
 
@@ -654,7 +654,7 @@ public function testGetUriForPath()
         //   RewriteCond %{REQUEST_FILENAME} !-f
         //   RewriteRule ^(.*)$ index.php [QSA,L]
         // http://host:8080/path/info?query=string
-        $server = array();
+        $server = [];
         $server['HTTP_HOST'] = 'host:8080';
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '8080';
@@ -668,7 +668,7 @@ public function testGetUriForPath()
         $server['PHP_SELF'] = '/index.php';
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://host:8080/some/path', $request->getUriForPath('/some/path'), '->getUri() with rewrite');
 
         // Use std port number
@@ -677,7 +677,7 @@ public function testGetUriForPath()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with rewrite and default port');
 
@@ -686,7 +686,7 @@ public function testGetUriForPath()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://servername/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with rewrite, default port without HOST_HEADER');
         $this->assertEquals('servername', $request->getHttpHost());
@@ -694,11 +694,11 @@ public function testGetUriForPath()
         // with user info
 
         $server['PHP_AUTH_USER'] = 'fabien';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername/some/path', $request->getUriForPath('/some/path'));
 
         $server['PHP_AUTH_PW'] = 'symfony';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername/some/path', $request->getUriForPath('/some/path'));
     }
 
@@ -712,30 +712,30 @@ public function testGetRelativeUriForPath($expected, $pathinfo, $path)
 
     public function getRelativeUriForPathData()
     {
-        return array(
-            array('me.png', '/foo', '/me.png'),
-            array('../me.png', '/foo/bar', '/me.png'),
-            array('me.png', '/foo/bar', '/foo/me.png'),
-            array('../baz/me.png', '/foo/bar/b', '/foo/baz/me.png'),
-            array('../../fooz/baz/me.png', '/foo/bar/b', '/fooz/baz/me.png'),
-            array('baz/me.png', '/foo/bar/b', 'baz/me.png'),
-        );
+        return [
+            ['me.png', '/foo', '/me.png'],
+            ['../me.png', '/foo/bar', '/me.png'],
+            ['me.png', '/foo/bar', '/foo/me.png'],
+            ['../baz/me.png', '/foo/bar/b', '/foo/baz/me.png'],
+            ['../../fooz/baz/me.png', '/foo/bar/b', '/fooz/baz/me.png'],
+            ['baz/me.png', '/foo/bar/b', 'baz/me.png'],
+        ];
     }
 
     public function testGetUserInfo()
     {
         $request = new Request();
 
-        $server = array('PHP_AUTH_USER' => 'fabien');
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $server = ['PHP_AUTH_USER' => 'fabien'];
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('fabien', $request->getUserInfo());
 
         $server['PHP_AUTH_USER'] = '0';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('0', $request->getUserInfo());
 
         $server['PHP_AUTH_PW'] = '0';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('0:0', $request->getUserInfo());
     }
 
@@ -743,22 +743,22 @@ public function testGetSchemeAndHttpHost()
     {
         $request = new Request();
 
-        $server = array();
+        $server = [];
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '90';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername:90', $request->getSchemeAndHttpHost());
 
         $server['PHP_AUTH_USER'] = 'fabien';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername:90', $request->getSchemeAndHttpHost());
 
         $server['PHP_AUTH_USER'] = '0';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername:90', $request->getSchemeAndHttpHost());
 
         $server['PHP_AUTH_PW'] = '0';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername:90', $request->getSchemeAndHttpHost());
     }
 
@@ -775,29 +775,29 @@ public function testGetQueryString($query, $expectedQuery, $msg)
 
     public function getQueryStringNormalizationData()
     {
-        return array(
-            array('foo', 'foo', 'works with valueless parameters'),
-            array('foo=', 'foo=', 'includes a dangling equal sign'),
-            array('bar=&foo=bar', 'bar=&foo=bar', '->works with empty parameters'),
-            array('foo=bar&bar=', 'bar=&foo=bar', 'sorts keys alphabetically'),
+        return [
+            ['foo', 'foo', 'works with valueless parameters'],
+            ['foo=', 'foo=', 'includes a dangling equal sign'],
+            ['bar=&foo=bar', 'bar=&foo=bar', '->works with empty parameters'],
+            ['foo=bar&bar=', 'bar=&foo=bar', 'sorts keys alphabetically'],
 
             // GET parameters, that are submitted from a HTML form, encode spaces as "+" by default (as defined in enctype application/x-www-form-urlencoded).
             // PHP also converts "+" to spaces when filling the global _GET or when using the function parse_str.
-            array('him=John%20Doe&her=Jane+Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes spaces in both encodings "%20" and "+"'),
+            ['him=John%20Doe&her=Jane+Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes spaces in both encodings "%20" and "+"'],
 
-            array('foo[]=1&foo[]=2', 'foo%5B%5D=1&foo%5B%5D=2', 'allows array notation'),
-            array('foo=1&foo=2', 'foo=1&foo=2', 'allows repeated parameters'),
-            array('pa%3Dram=foo%26bar%3Dbaz&test=test', 'pa%3Dram=foo%26bar%3Dbaz&test=test', 'works with encoded delimiters'),
-            array('0', '0', 'allows "0"'),
-            array('Jane Doe&John%20Doe', 'Jane%20Doe&John%20Doe', 'normalizes encoding in keys'),
-            array('her=Jane Doe&him=John%20Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes encoding in values'),
-            array('foo=bar&&&test&&', 'foo=bar&test', 'removes unneeded delimiters'),
-            array('formula=e=m*c^2', 'formula=e%3Dm%2Ac%5E2', 'correctly treats only the first "=" as delimiter and the next as value'),
+            ['foo[]=1&foo[]=2', 'foo%5B%5D=1&foo%5B%5D=2', 'allows array notation'],
+            ['foo=1&foo=2', 'foo=1&foo=2', 'allows repeated parameters'],
+            ['pa%3Dram=foo%26bar%3Dbaz&test=test', 'pa%3Dram=foo%26bar%3Dbaz&test=test', 'works with encoded delimiters'],
+            ['0', '0', 'allows "0"'],
+            ['Jane Doe&John%20Doe', 'Jane%20Doe&John%20Doe', 'normalizes encoding in keys'],
+            ['her=Jane Doe&him=John%20Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes encoding in values'],
+            ['foo=bar&&&test&&', 'foo=bar&test', 'removes unneeded delimiters'],
+            ['formula=e=m*c^2', 'formula=e%3Dm%2Ac%5E2', 'correctly treats only the first "=" as delimiter and the next as value'],
 
             // Ignore pairs with empty key, even if there was a value, e.g. "=value", as such nameless values cannot be retrieved anyway.
             // PHP also does not include them when building _GET.
-            array('foo=bar&=a=b&=x=y', 'foo=bar', 'removes params with empty key'),
-        );
+            ['foo=bar&=a=b&=x=y', 'foo=bar', 'removes params with empty key'],
+        ];
     }
 
     public function testGetQueryStringReturnsNull()
@@ -814,74 +814,74 @@ public function testGetHost()
     {
         $request = new Request();
 
-        $request->initialize(array('foo' => 'bar'));
+        $request->initialize(['foo' => 'bar']);
         $this->assertEquals('', $request->getHost(), '->getHost() return empty string if not initialized');
 
-        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_HOST' => 'www.example.com'));
+        $request->initialize([], [], [], [], [], ['HTTP_HOST' => 'www.example.com']);
         $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from Host Header');
 
         // Host header with port number
-        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_HOST' => 'www.example.com:8080'));
+        $request->initialize([], [], [], [], [], ['HTTP_HOST' => 'www.example.com:8080']);
         $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from Host Header with port number');
 
         // Server values
-        $request->initialize(array(), array(), array(), array(), array(), array('SERVER_NAME' => 'www.example.com'));
+        $request->initialize([], [], [], [], [], ['SERVER_NAME' => 'www.example.com']);
         $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from server name');
 
-        $request->initialize(array(), array(), array(), array(), array(), array('SERVER_NAME' => 'www.example.com', 'HTTP_HOST' => 'www.host.com'));
+        $request->initialize([], [], [], [], [], ['SERVER_NAME' => 'www.example.com', 'HTTP_HOST' => 'www.host.com']);
         $this->assertEquals('www.host.com', $request->getHost(), '->getHost() value from Host header has priority over SERVER_NAME ');
     }
 
     public function testGetPort()
     {
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'https',
             'HTTP_X_FORWARDED_PORT' => '443',
-        ));
+        ]);
         $port = $request->getPort();
 
         $this->assertEquals(80, $port, 'Without trusted proxies FORWARDED_PROTO and FORWARDED_PORT are ignored.');
 
-        Request::setTrustedProxies(array('1.1.1.1'), Request::HEADER_X_FORWARDED_ALL);
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        Request::setTrustedProxies(['1.1.1.1'], Request::HEADER_X_FORWARDED_ALL);
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'https',
             'HTTP_X_FORWARDED_PORT' => '8443
10000
',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'With PROTO and PORT on untrusted connection server value takes precedence.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(8443, $request->getPort(), 'With PROTO and PORT set PORT takes precedence.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'https',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'With only PROTO set getPort() ignores trusted headers on untrusted connection.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(443, $request->getPort(), 'With only PROTO set getPort() defaults to 443.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'http',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'If X_FORWARDED_PROTO is set to HTTP getPort() ignores trusted headers on untrusted connection.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(80, $request->getPort(), 'If X_FORWARDED_PROTO is set to HTTP getPort() returns port of the original request.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'On',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'With only PROTO set and value is On, getPort() ignores trusted headers on untrusted connection.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(443, $request->getPort(), 'With only PROTO set and value is On, getPort() defaults to 443.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => '1',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'With only PROTO set and value is 1, getPort() ignores trusted headers on untrusted connection.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(443, $request->getPort(), 'With only PROTO set and value is 1, getPort() defaults to 443.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'something-else',
-        ));
+        ]);
         $port = $request->getPort();
         $this->assertEquals(80, $port, 'With only PROTO set and value is not recognized, getPort() defaults to 80.');
     }
@@ -892,7 +892,7 @@ public function testGetPort()
     public function testGetHostWithFakeHttpHostValue()
     {
         $request = new Request();
-        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_HOST' => 'www.host.com?query=string'));
+        $request->initialize([], [], [], [], [], ['HTTP_HOST' => 'www.host.com?query=string']);
         $request->getHost();
     }
 
@@ -952,7 +952,7 @@ public function testGetSetMethod()
 
         $request = new Request();
         $request->setMethod('POST');
-        $request->query->set('_method', array('delete', 'patch'));
+        $request->query->set('_method', ['delete', 'patch']);
         $this->assertSame('POST', $request->getMethod(), '->getMethod() returns the request method if invalid type is defined in query');
     }
 
@@ -989,69 +989,69 @@ public function testGetClientIpsForwarded($expected, $remoteAddr, $httpForwarded
     public function getClientIpsForwardedProvider()
     {
         //              $expected                                  $remoteAddr  $httpForwarded                                       $trustedProxies
-        return array(
-            array(array('127.0.0.1'),                              '127.0.0.1', 'for="_gazonk"',                                      null),
-            array(array('127.0.0.1'),                              '127.0.0.1', 'for="_gazonk"',                                      array('127.0.0.1')),
-            array(array('88.88.88.88'),                            '127.0.0.1', 'for="88.88.88.88:80"',                               array('127.0.0.1')),
-            array(array('192.0.2.60'),                             '::1',       'for=192.0.2.60;proto=http;by=203.0.113.43',          array('::1')),
-            array(array('2620:0:1cfe:face:b00c::3', '192.0.2.43'), '::1',       'for=192.0.2.43, for=2620:0:1cfe:face:b00c::3',       array('::1')),
-            array(array('2001:db8:cafe::17'),                      '::1',       'for="[2001:db8:cafe::17]:4711',                      array('::1')),
-        );
+        return [
+            [['127.0.0.1'],                              '127.0.0.1', 'for="_gazonk"',                                      null],
+            [['127.0.0.1'],                              '127.0.0.1', 'for="_gazonk"',                                      ['127.0.0.1']],
+            [['88.88.88.88'],                            '127.0.0.1', 'for="88.88.88.88:80"',                               ['127.0.0.1']],
+            [['192.0.2.60'],                             '::1',       'for=192.0.2.60;proto=http;by=203.0.113.43',          ['::1']],
+            [['2620:0:1cfe:face:b00c::3', '192.0.2.43'], '::1',       'for=192.0.2.43, for=2620:0:1cfe:face:b00c::3',       ['::1']],
+            [['2001:db8:cafe::17'],                      '::1',       'for="[2001:db8:cafe::17]:4711',                      ['::1']],
+        ];
     }
 
     public function getClientIpsProvider()
     {
         //        $expected                          $remoteAddr                 $httpForwardedFor            $trustedProxies
-        return array(
+        return [
             // simple IPv4
-            array(array('88.88.88.88'),              '88.88.88.88',              null,                        null),
+            [['88.88.88.88'],              '88.88.88.88',              null,                        null],
             // trust the IPv4 remote addr
-            array(array('88.88.88.88'),              '88.88.88.88',              null,                        array('88.88.88.88')),
+            [['88.88.88.88'],              '88.88.88.88',              null,                        ['88.88.88.88']],
 
             // simple IPv6
-            array(array('::1'),                      '::1',                      null,                        null),
+            [['::1'],                      '::1',                      null,                        null],
             // trust the IPv6 remote addr
-            array(array('::1'),                      '::1',                      null,                        array('::1')),
+            [['::1'],                      '::1',                      null,                        ['::1']],
 
             // forwarded for with remote IPv4 addr not trusted
-            array(array('127.0.0.1'),                '127.0.0.1',                '88.88.88.88',               null),
+            [['127.0.0.1'],                '127.0.0.1',                '88.88.88.88',               null],
             // forwarded for with remote IPv4 addr trusted + comma
-            array(array('88.88.88.88'),              '127.0.0.1',                '88.88.88.88,',              array('127.0.0.1')),
+            [['88.88.88.88'],              '127.0.0.1',                '88.88.88.88,',              ['127.0.0.1']],
             // forwarded for with remote IPv4 and all FF addrs trusted
-            array(array('88.88.88.88'),              '127.0.0.1',                '88.88.88.88',               array('127.0.0.1', '88.88.88.88')),
+            [['88.88.88.88'],              '127.0.0.1',                '88.88.88.88',               ['127.0.0.1', '88.88.88.88']],
             // forwarded for with remote IPv4 range trusted
-            array(array('88.88.88.88'),              '123.45.67.89',             '88.88.88.88',               array('123.45.67.0/24')),
+            [['88.88.88.88'],              '123.45.67.89',             '88.88.88.88',               ['123.45.67.0/24']],
 
             // forwarded for with remote IPv6 addr not trusted
-            array(array('1620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  null),
+            [['1620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  null],
             // forwarded for with remote IPv6 addr trusted
-            array(array('2620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  array('1620:0:1cfe:face:b00c::3')),
+            [['2620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  ['1620:0:1cfe:face:b00c::3']],
             // forwarded for with remote IPv6 range trusted
-            array(array('88.88.88.88'),              '2a01:198:603:0:396e:4789:8e99:890f', '88.88.88.88',     array('2a01:198:603:0::/65')),
+            [['88.88.88.88'],              '2a01:198:603:0:396e:4789:8e99:890f', '88.88.88.88',     ['2a01:198:603:0::/65']],
 
             // multiple forwarded for with remote IPv4 addr trusted
-            array(array('88.88.88.88', '87.65.43.21', '127.0.0.1'), '123.45.67.89', '127.0.0.1, 87.65.43.21, 88.88.88.88', array('123.45.67.89')),
+            [['88.88.88.88', '87.65.43.21', '127.0.0.1'], '123.45.67.89', '127.0.0.1, 87.65.43.21, 88.88.88.88', ['123.45.67.89']],
             // multiple forwarded for with remote IPv4 addr and some reverse proxies trusted
-            array(array('87.65.43.21', '127.0.0.1'), '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', array('123.45.67.89', '88.88.88.88')),
+            [['87.65.43.21', '127.0.0.1'], '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', ['123.45.67.89', '88.88.88.88']],
             // multiple forwarded for with remote IPv4 addr and some reverse proxies trusted but in the middle
-            array(array('88.88.88.88', '127.0.0.1'), '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', array('123.45.67.89', '87.65.43.21')),
+            [['88.88.88.88', '127.0.0.1'], '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', ['123.45.67.89', '87.65.43.21']],
             // multiple forwarded for with remote IPv4 addr and all reverse proxies trusted
-            array(array('127.0.0.1'),                '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', array('123.45.67.89', '87.65.43.21', '88.88.88.88', '127.0.0.1')),
+            [['127.0.0.1'],                '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', ['123.45.67.89', '87.65.43.21', '88.88.88.88', '127.0.0.1']],
 
             // multiple forwarded for with remote IPv6 addr trusted
-            array(array('2620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', array('1620:0:1cfe:face:b00c::3')),
+            [['2620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', ['1620:0:1cfe:face:b00c::3']],
             // multiple forwarded for with remote IPv6 addr and some reverse proxies trusted
-            array(array('3620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', array('1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3')),
+            [['3620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', ['1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3']],
             // multiple forwarded for with remote IPv4 addr and some reverse proxies trusted but in the middle
-            array(array('2620:0:1cfe:face:b00c::3', '4620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '4620:0:1cfe:face:b00c::3,3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', array('1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3')),
+            [['2620:0:1cfe:face:b00c::3', '4620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '4620:0:1cfe:face:b00c::3,3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', ['1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3']],
 
             // client IP with port
-            array(array('88.88.88.88'), '127.0.0.1', '88.88.88.88:12345, 127.0.0.1', array('127.0.0.1')),
+            [['88.88.88.88'], '127.0.0.1', '88.88.88.88:12345, 127.0.0.1', ['127.0.0.1']],
 
             // invalid forwarded IP is ignored
-            array(array('88.88.88.88'), '127.0.0.1', 'unknown,88.88.88.88', array('127.0.0.1')),
-            array(array('88.88.88.88'), '127.0.0.1', '}__test|O:21:&quot;JDatabaseDriverMysqli&quot;:3:{s:2,88.88.88.88', array('127.0.0.1')),
-        );
+            [['88.88.88.88'], '127.0.0.1', 'unknown,88.88.88.88', ['127.0.0.1']],
+            [['88.88.88.88'], '127.0.0.1', '}__test|O:21:&quot;JDatabaseDriverMysqli&quot;:3:{s:2,88.88.88.88', ['127.0.0.1']],
+        ];
     }
 
     /**
@@ -1062,15 +1062,15 @@ public function testGetClientIpsWithConflictingHeaders($httpForwarded, $httpXFor
     {
         $request = new Request();
 
-        $server = array(
+        $server = [
             'REMOTE_ADDR' => '88.88.88.88',
             'HTTP_FORWARDED' => $httpForwarded,
             'HTTP_X_FORWARDED_FOR' => $httpXForwardedFor,
-        );
+        ];
 
-        Request::setTrustedProxies(array('88.88.88.88'), Request::HEADER_X_FORWARDED_ALL | Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['88.88.88.88'], Request::HEADER_X_FORWARDED_ALL | Request::HEADER_FORWARDED);
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $request->getClientIps();
     }
@@ -1082,15 +1082,15 @@ public function testGetClientIpsOnlyXHttpForwardedForTrusted($httpForwarded, $ht
     {
         $request = new Request();
 
-        $server = array(
+        $server = [
             'REMOTE_ADDR' => '88.88.88.88',
             'HTTP_FORWARDED' => $httpForwarded,
             'HTTP_X_FORWARDED_FOR' => $httpXForwardedFor,
-        );
+        ];
 
-        Request::setTrustedProxies(array('88.88.88.88'), Request::HEADER_X_FORWARDED_FOR);
+        Request::setTrustedProxies(['88.88.88.88'], Request::HEADER_X_FORWARDED_FOR);
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertSame(array_reverse(explode(',', $httpXForwardedFor)), $request->getClientIps());
     }
@@ -1098,13 +1098,13 @@ public function testGetClientIpsOnlyXHttpForwardedForTrusted($httpForwarded, $ht
     public function getClientIpsWithConflictingHeadersProvider()
     {
         //        $httpForwarded                   $httpXForwardedFor
-        return array(
-            array('for=87.65.43.21',                 '192.0.2.60'),
-            array('for=87.65.43.21, for=192.0.2.60', '192.0.2.60'),
-            array('for=192.0.2.60',                  '192.0.2.60,87.65.43.21'),
-            array('for="::face", for=192.0.2.60',    '192.0.2.60,192.0.2.43'),
-            array('for=87.65.43.21, for=192.0.2.60', '192.0.2.60,87.65.43.21'),
-        );
+        return [
+            ['for=87.65.43.21',                 '192.0.2.60'],
+            ['for=87.65.43.21, for=192.0.2.60', '192.0.2.60'],
+            ['for=192.0.2.60',                  '192.0.2.60,87.65.43.21'],
+            ['for="::face", for=192.0.2.60',    '192.0.2.60,192.0.2.43'],
+            ['for=87.65.43.21, for=192.0.2.60', '192.0.2.60,87.65.43.21'],
+        ];
     }
 
     /**
@@ -1114,15 +1114,15 @@ public function testGetClientIpsWithAgreeingHeaders($httpForwarded, $httpXForwar
     {
         $request = new Request();
 
-        $server = array(
+        $server = [
             'REMOTE_ADDR' => '88.88.88.88',
             'HTTP_FORWARDED' => $httpForwarded,
             'HTTP_X_FORWARDED_FOR' => $httpXForwardedFor,
-        );
+        ];
 
-        Request::setTrustedProxies(array('88.88.88.88'), -1);
+        Request::setTrustedProxies(['88.88.88.88'], -1);
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $clientIps = $request->getClientIps();
 
@@ -1132,14 +1132,14 @@ public function testGetClientIpsWithAgreeingHeaders($httpForwarded, $httpXForwar
     public function getClientIpsWithAgreeingHeadersProvider()
     {
         //        $httpForwarded                               $httpXForwardedFor
-        return array(
-            array('for="192.0.2.60"',                          '192.0.2.60',             array('192.0.2.60')),
-            array('for=192.0.2.60, for=87.65.43.21',           '192.0.2.60,87.65.43.21', array('87.65.43.21', '192.0.2.60')),
-            array('for="[::face]", for=192.0.2.60',            '::face,192.0.2.60',      array('192.0.2.60', '::face')),
-            array('for="192.0.2.60:80"',                       '192.0.2.60',             array('192.0.2.60')),
-            array('for=192.0.2.60;proto=http;by=203.0.113.43', '192.0.2.60',             array('192.0.2.60')),
-            array('for="[2001:db8:cafe::17]:4711"',            '2001:db8:cafe::17',      array('2001:db8:cafe::17')),
-        );
+        return [
+            ['for="192.0.2.60"',                          '192.0.2.60',             ['192.0.2.60']],
+            ['for=192.0.2.60, for=87.65.43.21',           '192.0.2.60,87.65.43.21', ['87.65.43.21', '192.0.2.60']],
+            ['for="[::face]", for=192.0.2.60',            '::face,192.0.2.60',      ['192.0.2.60', '::face']],
+            ['for="192.0.2.60:80"',                       '192.0.2.60',             ['192.0.2.60']],
+            ['for=192.0.2.60;proto=http;by=203.0.113.43', '192.0.2.60',             ['192.0.2.60']],
+            ['for="[2001:db8:cafe::17]:4711"',            '2001:db8:cafe::17',      ['2001:db8:cafe::17']],
+        ];
     }
 
     public function testGetContentWorksTwiceInDefaultMode()
@@ -1160,7 +1160,7 @@ public function testGetContentReturnsResource()
 
     public function testGetContentReturnsResourceWhenContentSetInConstructor()
     {
-        $req = new Request(array(), array(), array(), array(), array(), array(), 'MyContent');
+        $req = new Request([], [], [], [], [], [], 'MyContent');
         $resource = $req->getContent(true);
 
         $this->assertInternalType('resource', $resource);
@@ -1173,7 +1173,7 @@ public function testContentAsResource()
         fwrite($resource, 'My other content');
         rewind($resource);
 
-        $req = new Request(array(), array(), array(), array(), array(), array(), $resource);
+        $req = new Request([], [], [], [], [], [], $resource);
         $this->assertEquals('My other content', stream_get_contents($req->getContent(true)));
         $this->assertEquals('My other content', $req->getContent());
     }
@@ -1195,10 +1195,10 @@ public function testGetContentCantBeCalledTwiceWithResources($first, $second)
 
     public function getContentCantBeCalledTwiceWithResourcesProvider()
     {
-        return array(
-            'Resource then fetch' => array(true, false),
-            'Resource then resource' => array(true, true),
-        );
+        return [
+            'Resource then fetch' => [true, false],
+            'Resource then resource' => [true, true],
+        ];
     }
 
     /**
@@ -1224,24 +1224,24 @@ public function testGetContentCanBeCalledTwiceWithResources($first, $second)
 
     public function getContentCanBeCalledTwiceWithResourcesProvider()
     {
-        return array(
-            'Fetch then fetch' => array(false, false),
-            'Fetch then resource' => array(false, true),
-            'Resource then fetch' => array(true, false),
-            'Resource then resource' => array(true, true),
-        );
+        return [
+            'Fetch then fetch' => [false, false],
+            'Fetch then resource' => [false, true],
+            'Resource then fetch' => [true, false],
+            'Resource then resource' => [true, true],
+        ];
     }
 
     public function provideOverloadedMethods()
     {
-        return array(
-            array('PUT'),
-            array('DELETE'),
-            array('PATCH'),
-            array('put'),
-            array('delete'),
-            array('patch'),
-        );
+        return [
+            ['PUT'],
+            ['DELETE'],
+            ['PATCH'],
+            ['put'],
+            ['delete'],
+            ['patch'],
+        ];
     }
 
     /**
@@ -1254,14 +1254,14 @@ public function testCreateFromGlobals($method)
         $_GET['foo1'] = 'bar1';
         $_POST['foo2'] = 'bar2';
         $_COOKIE['foo3'] = 'bar3';
-        $_FILES['foo4'] = array('bar4');
+        $_FILES['foo4'] = ['bar4'];
         $_SERVER['foo5'] = 'bar5';
 
         $request = Request::createFromGlobals();
         $this->assertEquals('bar1', $request->query->get('foo1'), '::fromGlobals() uses values from $_GET');
         $this->assertEquals('bar2', $request->request->get('foo2'), '::fromGlobals() uses values from $_POST');
         $this->assertEquals('bar3', $request->cookies->get('foo3'), '::fromGlobals() uses values from $_COOKIE');
-        $this->assertEquals(array('bar4'), $request->files->get('foo4'), '::fromGlobals() uses values from $_FILES');
+        $this->assertEquals(['bar4'], $request->files->get('foo4'), '::fromGlobals() uses values from $_FILES');
         $this->assertEquals('bar5', $request->server->get('foo5'), '::fromGlobals() uses values from $_SERVER');
 
         unset($_GET['foo1'], $_POST['foo2'], $_COOKIE['foo3'], $_FILES['foo4'], $_SERVER['foo5']);
@@ -1291,25 +1291,25 @@ public function testCreateFromGlobals($method)
     public function testOverrideGlobals()
     {
         $request = new Request();
-        $request->initialize(array('foo' => 'bar'));
+        $request->initialize(['foo' => 'bar']);
 
         // as the Request::overrideGlobals really work, it erase $_SERVER, so we must backup it
         $server = $_SERVER;
 
         $request->overrideGlobals();
 
-        $this->assertEquals(array('foo' => 'bar'), $_GET);
+        $this->assertEquals(['foo' => 'bar'], $_GET);
 
-        $request->initialize(array(), array('foo' => 'bar'));
+        $request->initialize([], ['foo' => 'bar']);
         $request->overrideGlobals();
 
-        $this->assertEquals(array('foo' => 'bar'), $_POST);
+        $this->assertEquals(['foo' => 'bar'], $_POST);
 
         $this->assertArrayNotHasKey('HTTP_X_FORWARDED_PROTO', $_SERVER);
 
         $request->headers->set('X_FORWARDED_PROTO', 'https');
 
-        Request::setTrustedProxies(array('1.1.1.1'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['1.1.1.1'], Request::HEADER_X_FORWARDED_ALL);
         $this->assertFalse($request->isSecure());
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertTrue($request->isSecure());
@@ -1326,12 +1326,12 @@ public function testOverrideGlobals()
         $this->assertArrayHasKey('CONTENT_TYPE', $_SERVER);
         $this->assertArrayHasKey('CONTENT_LENGTH', $_SERVER);
 
-        $request->initialize(array('foo' => 'bar', 'baz' => 'foo'));
+        $request->initialize(['foo' => 'bar', 'baz' => 'foo']);
         $request->query->remove('baz');
 
         $request->overrideGlobals();
 
-        $this->assertEquals(array('foo' => 'bar'), $_GET);
+        $this->assertEquals(['foo' => 'bar'], $_GET);
         $this->assertEquals('foo=bar', $_SERVER['QUERY_STRING']);
         $this->assertEquals('foo=bar', $request->server->get('QUERY_STRING'));
 
@@ -1344,23 +1344,23 @@ public function testGetScriptName()
         $request = new Request();
         $this->assertEquals('', $request->getScriptName());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_NAME'] = '/index.php';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/index.php', $request->getScriptName());
 
-        $server = array();
+        $server = [];
         $server['ORIG_SCRIPT_NAME'] = '/frontend.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/frontend.php', $request->getScriptName());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_NAME'] = '/index.php';
         $server['ORIG_SCRIPT_NAME'] = '/frontend.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/index.php', $request->getScriptName());
     }
@@ -1370,29 +1370,29 @@ public function testGetBasePath()
         $request = new Request();
         $this->assertEquals('', $request->getBasePath());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('', $request->getBasePath());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
         $server['SCRIPT_NAME'] = '/index.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('', $request->getBasePath());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
         $server['PHP_SELF'] = '/index.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('', $request->getBasePath());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
         $server['ORIG_SCRIPT_NAME'] = '/index.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('', $request->getBasePath());
     }
@@ -1402,21 +1402,21 @@ public function testGetPathInfo()
         $request = new Request();
         $this->assertEquals('/', $request->getPathInfo());
 
-        $server = array();
+        $server = [];
         $server['REQUEST_URI'] = '/path/info';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/path/info', $request->getPathInfo());
 
-        $server = array();
+        $server = [];
         $server['REQUEST_URI'] = '/path%20test/info';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/path%20test/info', $request->getPathInfo());
 
-        $server = array();
+        $server = [];
         $server['REQUEST_URI'] = '?a=b';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/', $request->getPathInfo());
     }
@@ -1444,27 +1444,27 @@ public function testGetPreferredLanguage()
     {
         $request = new Request();
         $this->assertNull($request->getPreferredLanguage());
-        $this->assertNull($request->getPreferredLanguage(array()));
-        $this->assertEquals('fr', $request->getPreferredLanguage(array('fr')));
-        $this->assertEquals('fr', $request->getPreferredLanguage(array('fr', 'en')));
-        $this->assertEquals('en', $request->getPreferredLanguage(array('en', 'fr')));
-        $this->assertEquals('fr-ch', $request->getPreferredLanguage(array('fr-ch', 'fr-fr')));
+        $this->assertNull($request->getPreferredLanguage([]));
+        $this->assertEquals('fr', $request->getPreferredLanguage(['fr']));
+        $this->assertEquals('fr', $request->getPreferredLanguage(['fr', 'en']));
+        $this->assertEquals('en', $request->getPreferredLanguage(['en', 'fr']));
+        $this->assertEquals('fr-ch', $request->getPreferredLanguage(['fr-ch', 'fr-fr']));
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, en; q=0.6');
-        $this->assertEquals('en', $request->getPreferredLanguage(array('en', 'en-us')));
+        $this->assertEquals('en', $request->getPreferredLanguage(['en', 'en-us']));
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, en; q=0.6');
-        $this->assertEquals('en', $request->getPreferredLanguage(array('fr', 'en')));
+        $this->assertEquals('en', $request->getPreferredLanguage(['fr', 'en']));
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8');
-        $this->assertEquals('en', $request->getPreferredLanguage(array('fr', 'en')));
+        $this->assertEquals('en', $request->getPreferredLanguage(['fr', 'en']));
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, fr-fr; q=0.6, fr; q=0.5');
-        $this->assertEquals('en', $request->getPreferredLanguage(array('fr', 'en')));
+        $this->assertEquals('en', $request->getPreferredLanguage(['fr', 'en']));
     }
 
     public function testIsXmlHttpRequest()
@@ -1502,72 +1502,72 @@ public function testIntlLocale()
     public function testGetCharsets()
     {
         $request = new Request();
-        $this->assertEquals(array(), $request->getCharsets());
+        $this->assertEquals([], $request->getCharsets());
         $request->headers->set('Accept-Charset', 'ISO-8859-1, US-ASCII, UTF-8; q=0.8, ISO-10646-UCS-2; q=0.6');
-        $this->assertEquals(array(), $request->getCharsets()); // testing caching
+        $this->assertEquals([], $request->getCharsets()); // testing caching
 
         $request = new Request();
         $request->headers->set('Accept-Charset', 'ISO-8859-1, US-ASCII, UTF-8; q=0.8, ISO-10646-UCS-2; q=0.6');
-        $this->assertEquals(array('ISO-8859-1', 'US-ASCII', 'UTF-8', 'ISO-10646-UCS-2'), $request->getCharsets());
+        $this->assertEquals(['ISO-8859-1', 'US-ASCII', 'UTF-8', 'ISO-10646-UCS-2'], $request->getCharsets());
 
         $request = new Request();
         $request->headers->set('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.7');
-        $this->assertEquals(array('ISO-8859-1', 'utf-8', '*'), $request->getCharsets());
+        $this->assertEquals(['ISO-8859-1', 'utf-8', '*'], $request->getCharsets());
     }
 
     public function testGetEncodings()
     {
         $request = new Request();
-        $this->assertEquals(array(), $request->getEncodings());
+        $this->assertEquals([], $request->getEncodings());
         $request->headers->set('Accept-Encoding', 'gzip,deflate,sdch');
-        $this->assertEquals(array(), $request->getEncodings()); // testing caching
+        $this->assertEquals([], $request->getEncodings()); // testing caching
 
         $request = new Request();
         $request->headers->set('Accept-Encoding', 'gzip,deflate,sdch');
-        $this->assertEquals(array('gzip', 'deflate', 'sdch'), $request->getEncodings());
+        $this->assertEquals(['gzip', 'deflate', 'sdch'], $request->getEncodings());
 
         $request = new Request();
         $request->headers->set('Accept-Encoding', 'gzip;q=0.4,deflate;q=0.9,compress;q=0.7');
-        $this->assertEquals(array('deflate', 'compress', 'gzip'), $request->getEncodings());
+        $this->assertEquals(['deflate', 'compress', 'gzip'], $request->getEncodings());
     }
 
     public function testGetAcceptableContentTypes()
     {
         $request = new Request();
-        $this->assertEquals(array(), $request->getAcceptableContentTypes());
+        $this->assertEquals([], $request->getAcceptableContentTypes());
         $request->headers->set('Accept', 'application/vnd.wap.wmlscriptc, text/vnd.wap.wml, application/vnd.wap.xhtml+xml, application/xhtml+xml, text/html, multipart/mixed, */*');
-        $this->assertEquals(array(), $request->getAcceptableContentTypes()); // testing caching
+        $this->assertEquals([], $request->getAcceptableContentTypes()); // testing caching
 
         $request = new Request();
         $request->headers->set('Accept', 'application/vnd.wap.wmlscriptc, text/vnd.wap.wml, application/vnd.wap.xhtml+xml, application/xhtml+xml, text/html, multipart/mixed, */*');
-        $this->assertEquals(array('application/vnd.wap.wmlscriptc', 'text/vnd.wap.wml', 'application/vnd.wap.xhtml+xml', 'application/xhtml+xml', 'text/html', 'multipart/mixed', '*/*'), $request->getAcceptableContentTypes());
+        $this->assertEquals(['application/vnd.wap.wmlscriptc', 'text/vnd.wap.wml', 'application/vnd.wap.xhtml+xml', 'application/xhtml+xml', 'text/html', 'multipart/mixed', '*/*'], $request->getAcceptableContentTypes());
     }
 
     public function testGetLanguages()
     {
         $request = new Request();
-        $this->assertEquals(array(), $request->getLanguages());
+        $this->assertEquals([], $request->getLanguages());
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, en; q=0.6');
-        $this->assertEquals(array('zh', 'en_US', 'en'), $request->getLanguages());
-        $this->assertEquals(array('zh', 'en_US', 'en'), $request->getLanguages());
+        $this->assertEquals(['zh', 'en_US', 'en'], $request->getLanguages());
+        $this->assertEquals(['zh', 'en_US', 'en'], $request->getLanguages());
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.6, en; q=0.8');
-        $this->assertEquals(array('zh', 'en', 'en_US'), $request->getLanguages()); // Test out of order qvalues
+        $this->assertEquals(['zh', 'en', 'en_US'], $request->getLanguages()); // Test out of order qvalues
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en, en-us');
-        $this->assertEquals(array('zh', 'en', 'en_US'), $request->getLanguages()); // Test equal weighting without qvalues
+        $this->assertEquals(['zh', 'en', 'en_US'], $request->getLanguages()); // Test equal weighting without qvalues
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh; q=0.6, en, en-us; q=0.6');
-        $this->assertEquals(array('en', 'zh', 'en_US'), $request->getLanguages()); // Test equal weighting with qvalues
+        $this->assertEquals(['en', 'zh', 'en_US'], $request->getLanguages()); // Test equal weighting with qvalues
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, i-cherokee; q=0.6');
-        $this->assertEquals(array('zh', 'cherokee'), $request->getLanguages());
+        $this->assertEquals(['zh', 'cherokee'], $request->getLanguages());
     }
 
     public function testGetRequestFormat()
@@ -1587,7 +1587,7 @@ public function testGetRequestFormat()
         $this->assertNull($request->setRequestFormat('foo'));
         $this->assertEquals('foo', $request->getRequestFormat(null));
 
-        $request = new Request(array('_format' => 'foo'));
+        $request = new Request(['_format' => 'foo']);
         $this->assertEquals('html', $request->getRequestFormat());
     }
 
@@ -1664,7 +1664,7 @@ public function testIsMethod()
      */
     public function testGetBaseUrl($uri, $server, $expectedBaseUrl, $expectedPathInfo)
     {
-        $request = Request::create($uri, 'GET', array(), array(), array(), $server);
+        $request = Request::create($uri, 'GET', [], [], [], $server);
 
         $this->assertSame($expectedBaseUrl, $request->getBaseUrl(), 'baseUrl');
         $this->assertSame($expectedPathInfo, $request->getPathInfo(), 'pathInfo');
@@ -1672,78 +1672,78 @@ public function testGetBaseUrl($uri, $server, $expectedBaseUrl, $expectedPathInf
 
     public function getBaseUrlData()
     {
-        return array(
-            array(
+        return [
+            [
                 '/fruit/strawberry/1234index.php/blah',
-                array(
+                [
                     'SCRIPT_FILENAME' => 'E:/Sites/cc-new/public_html/fruit/index.php',
                     'SCRIPT_NAME' => '/fruit/index.php',
                     'PHP_SELF' => '/fruit/index.php',
-                ),
+                ],
                 '/fruit',
                 '/strawberry/1234index.php/blah',
-            ),
-            array(
+            ],
+            [
                 '/fruit/strawberry/1234index.php/blah',
-                array(
+                [
                     'SCRIPT_FILENAME' => 'E:/Sites/cc-new/public_html/index.php',
                     'SCRIPT_NAME' => '/index.php',
                     'PHP_SELF' => '/index.php',
-                ),
+                ],
                 '',
                 '/fruit/strawberry/1234index.php/blah',
-            ),
-            array(
+            ],
+            [
                 '/foo%20bar/',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo bar/app.php',
                     'SCRIPT_NAME' => '/foo bar/app.php',
                     'PHP_SELF' => '/foo bar/app.php',
-                ),
+                ],
                 '/foo%20bar',
                 '/',
-            ),
-            array(
+            ],
+            [
                 '/foo%20bar/home',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo bar/app.php',
                     'SCRIPT_NAME' => '/foo bar/app.php',
                     'PHP_SELF' => '/foo bar/app.php',
-                ),
+                ],
                 '/foo%20bar',
                 '/home',
-            ),
-            array(
+            ],
+            [
                 '/foo%20bar/app.php/home',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo bar/app.php',
                     'SCRIPT_NAME' => '/foo bar/app.php',
                     'PHP_SELF' => '/foo bar/app.php',
-                ),
+                ],
                 '/foo%20bar/app.php',
                 '/home',
-            ),
-            array(
+            ],
+            [
                 '/foo%20bar/app.php/home%3Dbaz',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo bar/app.php',
                     'SCRIPT_NAME' => '/foo bar/app.php',
                     'PHP_SELF' => '/foo bar/app.php',
-                ),
+                ],
                 '/foo%20bar/app.php',
                 '/home%3Dbaz',
-            ),
-            array(
+            ],
+            [
                 '/foo/bar+baz',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo/app.php',
                     'SCRIPT_NAME' => '/foo/app.php',
                     'PHP_SELF' => '/foo/app.php',
-                ),
+                ],
                 '/foo',
                 '/bar+baz',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -1761,16 +1761,16 @@ public function testUrlencodedStringPrefix($string, $prefix, $expect)
 
     public function urlencodedStringPrefixData()
     {
-        return array(
-            array('foo', 'foo', 'foo'),
-            array('fo%6f', 'foo', 'fo%6f'),
-            array('foo/bar', 'foo', 'foo'),
-            array('fo%6f/bar', 'foo', 'fo%6f'),
-            array('f%6f%6f/bar', 'foo', 'f%6f%6f'),
-            array('%66%6F%6F/bar', 'foo', '%66%6F%6F'),
-            array('fo+o/bar', 'fo+o', 'fo+o'),
-            array('fo%2Bo/bar', 'fo+o', 'fo%2Bo'),
-        );
+        return [
+            ['foo', 'foo', 'foo'],
+            ['fo%6f', 'foo', 'fo%6f'],
+            ['foo/bar', 'foo', 'foo'],
+            ['fo%6f/bar', 'foo', 'fo%6f'],
+            ['f%6f%6f/bar', 'foo', 'f%6f%6f'],
+            ['%66%6F%6F/bar', 'foo', '%66%6F%6F'],
+            ['fo+o/bar', 'fo+o', 'fo+o'],
+            ['fo%2Bo/bar', 'fo+o', 'fo%2Bo'],
+        ];
     }
 
     private function disableHttpMethodParameterOverride()
@@ -1785,7 +1785,7 @@ private function getRequestInstanceForClientIpTests($remoteAddr, $httpForwardedF
     {
         $request = new Request();
 
-        $server = array('REMOTE_ADDR' => $remoteAddr);
+        $server = ['REMOTE_ADDR' => $remoteAddr];
         if (null !== $httpForwardedFor) {
             $server['HTTP_X_FORWARDED_FOR'] = $httpForwardedFor;
         }
@@ -1794,7 +1794,7 @@ private function getRequestInstanceForClientIpTests($remoteAddr, $httpForwardedF
             Request::setTrustedProxies($trustedProxies, Request::HEADER_X_FORWARDED_ALL);
         }
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         return $request;
     }
@@ -1803,7 +1803,7 @@ private function getRequestInstanceForClientIpsForwardedTests($remoteAddr, $http
     {
         $request = new Request();
 
-        $server = array('REMOTE_ADDR' => $remoteAddr);
+        $server = ['REMOTE_ADDR' => $remoteAddr];
 
         if (null !== $httpForwarded) {
             $server['HTTP_FORWARDED'] = $httpForwarded;
@@ -1813,7 +1813,7 @@ private function getRequestInstanceForClientIpsForwardedTests($remoteAddr, $http
             Request::setTrustedProxies($trustedProxies, Request::HEADER_FORWARDED);
         }
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         return $request;
     }
@@ -1834,35 +1834,35 @@ public function testTrustedProxiesXForwardedFor()
         $this->assertFalse($request->isSecure());
 
         // disabling proxy trusting
-        Request::setTrustedProxies(array(), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies([], Request::HEADER_X_FORWARDED_ALL);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // request is forwarded by a non-trusted proxy
-        Request::setTrustedProxies(array('2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // trusted proxy via setTrustedProxies()
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
         $this->assertEquals('1.1.1.1', $request->getClientIp());
         $this->assertEquals('foo.example.com', $request->getHost());
         $this->assertEquals(443, $request->getPort());
         $this->assertTrue($request->isSecure());
 
         // trusted proxy via setTrustedProxies()
-        Request::setTrustedProxies(array('3.3.3.4', '2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['3.3.3.4', '2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // check various X_FORWARDED_PROTO header values
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
         $request->headers->set('X_FORWARDED_PROTO', 'ssl');
         $this->assertTrue($request->isSecure());
 
@@ -1887,7 +1887,7 @@ public function testLegacyTrustedProxies()
         $request->headers->set('X_MY_PROTO', 'http');
         $request->headers->set('X_MY_PORT', 81);
 
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
 
         // custom header names
         Request::setTrustedHeaderName(Request::HEADER_CLIENT_IP, 'X_MY_FOR');
@@ -1930,35 +1930,35 @@ public function testTrustedProxiesForwarded()
         $this->assertFalse($request->isSecure());
 
         // disabling proxy trusting
-        Request::setTrustedProxies(array(), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies([], Request::HEADER_FORWARDED);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // request is forwarded by a non-trusted proxy
-        Request::setTrustedProxies(array('2.2.2.2'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['2.2.2.2'], Request::HEADER_FORWARDED);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // trusted proxy via setTrustedProxies()
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_FORWARDED);
         $this->assertEquals('1.1.1.1', $request->getClientIp());
         $this->assertEquals('foo.example.com', $request->getHost());
         $this->assertEquals(8080, $request->getPort());
         $this->assertTrue($request->isSecure());
 
         // trusted proxy via setTrustedProxies()
-        Request::setTrustedProxies(array('3.3.3.4', '2.2.2.2'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['3.3.3.4', '2.2.2.2'], Request::HEADER_FORWARDED);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // check various X_FORWARDED_PROTO header values
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_FORWARDED);
         $request->headers->set('FORWARDED', 'proto=ssl');
         $this->assertTrue($request->isSecure());
 
@@ -1998,37 +1998,37 @@ public function testIISRequestUri($headers, $server, $expectedRequestUri)
         $this->assertEquals($expectedRequestUri, $request->getRequestUri(), '->getRequestUri() is correct');
 
         $subRequestUri = '/bar/foo';
-        $subRequest = Request::create($subRequestUri, 'get', array(), array(), array(), $request->server->all());
+        $subRequest = Request::create($subRequestUri, 'get', [], [], [], $request->server->all());
         $this->assertEquals($subRequestUri, $subRequest->getRequestUri(), '->getRequestUri() is correct in sub request');
     }
 
     public function iisRequestUriProvider()
     {
-        return array(
-            array(
-                array(),
-                array(
+        return [
+            [
+                [],
+                [
                     'IIS_WasUrlRewritten' => '1',
                     'UNENCODED_URL' => '/foo/bar',
-                ),
+                ],
                 '/foo/bar',
-            ),
-            array(
-                array(),
-                array(
+            ],
+            [
+                [],
+                [
                     'ORIG_PATH_INFO' => '/foo/bar',
-                ),
+                ],
                 '/foo/bar',
-            ),
-            array(
-                array(),
-                array(
+            ],
+            [
+                [],
+                [
                     'ORIG_PATH_INFO' => '/foo/bar',
                     'QUERY_STRING' => 'foo=bar',
-                ),
+                ],
                 '/foo/bar?foo=bar',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testTrustedHosts()
@@ -2041,7 +2041,7 @@ public function testTrustedHosts()
         $this->assertEquals('evil.com', $request->getHost());
 
         // add a trusted domain and all its subdomains
-        Request::setTrustedHosts(array('^([a-z]{9}\.)?trusted\.com$'));
+        Request::setTrustedHosts(['^([a-z]{9}\.)?trusted\.com$']);
 
         // untrusted host
         $request->headers->set('host', 'evil.com');
@@ -2073,7 +2073,7 @@ public function testTrustedHosts()
 
     public function testSetTrustedHostsDoesNotBreakOnSpecialCharacters()
     {
-        Request::setTrustedHosts(array('localhost(\.local){0,1}#,example.com', 'localhost'));
+        Request::setTrustedHosts(['localhost(\.local){0,1}#,example.com', 'localhost']);
 
         $request = Request::create('/');
         $request->headers->set('host', 'localhost');
@@ -2082,7 +2082,7 @@ public function testSetTrustedHostsDoesNotBreakOnSpecialCharacters()
 
     public function testFactory()
     {
-        Request::setFactory(function (array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null) {
+        Request::setFactory(function (array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null) {
             return new NewRequest();
         });
 
@@ -2131,23 +2131,23 @@ public function testHostValidity($host, $isValid, $expectedHost = null, $expecte
 
     public function getHostValidities()
     {
-        return array(
-            array('.a', false),
-            array('a..', false),
-            array('a.', true),
-            array("\xE9", false),
-            array('[::1]', true),
-            array('[::1]:80', true, '[::1]', 80),
-            array(str_repeat('.', 101), false),
-        );
+        return [
+            ['.a', false],
+            ['a..', false],
+            ['a.', true],
+            ["\xE9", false],
+            ['[::1]', true],
+            ['[::1]:80', true, '[::1]', 80],
+            [str_repeat('.', 101), false],
+        ];
     }
 
     public function getLongHostNames()
     {
-        return array(
-            array('a'.str_repeat('.a', 40000)),
-            array(str_repeat(':', 101)),
-        );
+        return [
+            ['a'.str_repeat('.a', 40000)],
+            [str_repeat(':', 101)],
+        ];
     }
 
     /**
@@ -2162,18 +2162,18 @@ public function testMethodIdempotent($method, $idempotent)
 
     public function methodIdempotentProvider()
     {
-        return array(
-            array('HEAD', true),
-            array('GET', true),
-            array('POST', false),
-            array('PUT', true),
-            array('PATCH', false),
-            array('DELETE', true),
-            array('PURGE', true),
-            array('OPTIONS', true),
-            array('TRACE', true),
-            array('CONNECT', false),
-        );
+        return [
+            ['HEAD', true],
+            ['GET', true],
+            ['POST', false],
+            ['PUT', true],
+            ['PATCH', false],
+            ['DELETE', true],
+            ['PURGE', true],
+            ['OPTIONS', true],
+            ['TRACE', true],
+            ['CONNECT', false],
+        ];
     }
 
     /**
@@ -2188,18 +2188,18 @@ public function testMethodSafe($method, $safe)
 
     public function methodSafeProvider()
     {
-        return array(
-            array('HEAD', true),
-            array('GET', true),
-            array('POST', false),
-            array('PUT', false),
-            array('PATCH', false),
-            array('DELETE', false),
-            array('PURGE', false),
-            array('OPTIONS', true),
-            array('TRACE', true),
-            array('CONNECT', false),
-        );
+        return [
+            ['HEAD', true],
+            ['GET', true],
+            ['POST', false],
+            ['PUT', false],
+            ['PATCH', false],
+            ['DELETE', false],
+            ['PURGE', false],
+            ['OPTIONS', true],
+            ['TRACE', true],
+            ['CONNECT', false],
+        ];
     }
 
     /**
@@ -2225,18 +2225,18 @@ public function testMethodCacheable($method, $cacheable)
 
     public function methodCacheableProvider()
     {
-        return array(
-            array('HEAD', true),
-            array('GET', true),
-            array('POST', false),
-            array('PUT', false),
-            array('PATCH', false),
-            array('DELETE', false),
-            array('PURGE', false),
-            array('OPTIONS', false),
-            array('TRACE', false),
-            array('CONNECT', false),
-        );
+        return [
+            ['HEAD', true],
+            ['GET', true],
+            ['POST', false],
+            ['PUT', false],
+            ['PATCH', false],
+            ['DELETE', false],
+            ['PURGE', false],
+            ['OPTIONS', false],
+            ['TRACE', false],
+            ['CONNECT', false],
+        ];
     }
 
     /**
@@ -2244,7 +2244,7 @@ public function methodCacheableProvider()
      */
     public function testGetTrustedHeaderName()
     {
-        Request::setTrustedProxies(array('8.8.8.8'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['8.8.8.8'], Request::HEADER_X_FORWARDED_ALL);
 
         $this->assertNull(Request::getTrustedHeaderName(Request::HEADER_FORWARDED));
         $this->assertSame('X_FORWARDED_FOR', Request::getTrustedHeaderName(Request::HEADER_CLIENT_IP));
@@ -2252,7 +2252,7 @@ public function testGetTrustedHeaderName()
         $this->assertSame('X_FORWARDED_PORT', Request::getTrustedHeaderName(Request::HEADER_CLIENT_PORT));
         $this->assertSame('X_FORWARDED_PROTO', Request::getTrustedHeaderName(Request::HEADER_CLIENT_PROTO));
 
-        Request::setTrustedProxies(array('8.8.8.8'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['8.8.8.8'], Request::HEADER_FORWARDED);
 
         $this->assertSame('FORWARDED', Request::getTrustedHeaderName(Request::HEADER_FORWARDED));
         $this->assertNull(Request::getTrustedHeaderName(Request::HEADER_CLIENT_IP));
@@ -2266,7 +2266,7 @@ public function testGetTrustedHeaderName()
         Request::setTrustedHeaderName(Request::HEADER_CLIENT_PORT, 'D');
         Request::setTrustedHeaderName(Request::HEADER_CLIENT_PROTO, 'E');
 
-        Request::setTrustedProxies(array('8.8.8.8'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['8.8.8.8'], Request::HEADER_FORWARDED);
 
         $this->assertSame('A', Request::getTrustedHeaderName(Request::HEADER_FORWARDED));
         $this->assertNull(Request::getTrustedHeaderName(Request::HEADER_CLIENT_IP));
@@ -2274,7 +2274,7 @@ public function testGetTrustedHeaderName()
         $this->assertNull(Request::getTrustedHeaderName(Request::HEADER_CLIENT_PORT));
         $this->assertNull(Request::getTrustedHeaderName(Request::HEADER_CLIENT_PROTO));
 
-        Request::setTrustedProxies(array('8.8.8.8'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['8.8.8.8'], Request::HEADER_X_FORWARDED_ALL);
 
         $this->assertNull(Request::getTrustedHeaderName(Request::HEADER_FORWARDED));
         $this->assertSame('B', Request::getTrustedHeaderName(Request::HEADER_CLIENT_IP));
@@ -2282,7 +2282,7 @@ public function testGetTrustedHeaderName()
         $this->assertSame('D', Request::getTrustedHeaderName(Request::HEADER_CLIENT_PORT));
         $this->assertSame('E', Request::getTrustedHeaderName(Request::HEADER_CLIENT_PROTO));
 
-        Request::setTrustedProxies(array('8.8.8.8'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['8.8.8.8'], Request::HEADER_FORWARDED);
 
         $this->assertSame('A', Request::getTrustedHeaderName(Request::HEADER_FORWARDED));
 
@@ -2300,7 +2300,7 @@ public function testGetTrustedHeaderName()
     public function testProtocolVersion($serverProtocol, $trustedProxy, $via, $expected)
     {
         if ($trustedProxy) {
-            Request::setTrustedProxies(array('1.1.1.1'), -1);
+            Request::setTrustedProxies(['1.1.1.1'], -1);
         }
 
         $request = new Request();
@@ -2313,41 +2313,41 @@ public function testProtocolVersion($serverProtocol, $trustedProxy, $via, $expec
 
     public function protocolVersionProvider()
     {
-        return array(
-            'untrusted without via' => array('HTTP/2.0', false, '', 'HTTP/2.0'),
-            'untrusted with via' => array('HTTP/2.0', false, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/2.0'),
-            'trusted without via' => array('HTTP/2.0', true, '', 'HTTP/2.0'),
-            'trusted with via' => array('HTTP/2.0', true, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'),
-            'trusted with via and protocol name' => array('HTTP/2.0', true, 'HTTP/1.0 fred, HTTP/1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'),
-            'trusted with broken via' => array('HTTP/2.0', true, 'HTTP/1^0 foo', 'HTTP/2.0'),
-            'trusted with partially-broken via' => array('HTTP/2.0', true, '1.0 fred, foo', 'HTTP/1.0'),
-        );
+        return [
+            'untrusted without via' => ['HTTP/2.0', false, '', 'HTTP/2.0'],
+            'untrusted with via' => ['HTTP/2.0', false, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/2.0'],
+            'trusted without via' => ['HTTP/2.0', true, '', 'HTTP/2.0'],
+            'trusted with via' => ['HTTP/2.0', true, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'],
+            'trusted with via and protocol name' => ['HTTP/2.0', true, 'HTTP/1.0 fred, HTTP/1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'],
+            'trusted with broken via' => ['HTTP/2.0', true, 'HTTP/1^0 foo', 'HTTP/2.0'],
+            'trusted with partially-broken via' => ['HTTP/2.0', true, '1.0 fred, foo', 'HTTP/1.0'],
+        ];
     }
 
     public function nonstandardRequestsData()
     {
-        return array(
-            array('',  '', '/', 'http://host:8080/', ''),
-            array('/', '', '/', 'http://host:8080/', ''),
+        return [
+            ['',  '', '/', 'http://host:8080/', ''],
+            ['/', '', '/', 'http://host:8080/', ''],
 
-            array('hello/app.php/x',  '', '/x', 'http://host:8080/hello/app.php/x', '/hello', '/hello/app.php'),
-            array('/hello/app.php/x', '', '/x', 'http://host:8080/hello/app.php/x', '/hello', '/hello/app.php'),
+            ['hello/app.php/x',  '', '/x', 'http://host:8080/hello/app.php/x', '/hello', '/hello/app.php'],
+            ['/hello/app.php/x', '', '/x', 'http://host:8080/hello/app.php/x', '/hello', '/hello/app.php'],
 
-            array('',      'a=b', '/', 'http://host:8080/?a=b'),
-            array('?a=b',  'a=b', '/', 'http://host:8080/?a=b'),
-            array('/?a=b', 'a=b', '/', 'http://host:8080/?a=b'),
+            ['',      'a=b', '/', 'http://host:8080/?a=b'],
+            ['?a=b',  'a=b', '/', 'http://host:8080/?a=b'],
+            ['/?a=b', 'a=b', '/', 'http://host:8080/?a=b'],
 
-            array('x',      'a=b', '/x', 'http://host:8080/x?a=b'),
-            array('x?a=b',  'a=b', '/x', 'http://host:8080/x?a=b'),
-            array('/x?a=b', 'a=b', '/x', 'http://host:8080/x?a=b'),
+            ['x',      'a=b', '/x', 'http://host:8080/x?a=b'],
+            ['x?a=b',  'a=b', '/x', 'http://host:8080/x?a=b'],
+            ['/x?a=b', 'a=b', '/x', 'http://host:8080/x?a=b'],
 
-            array('hello/x',  '', '/x', 'http://host:8080/hello/x', '/hello'),
-            array('/hello/x', '', '/x', 'http://host:8080/hello/x', '/hello'),
+            ['hello/x',  '', '/x', 'http://host:8080/hello/x', '/hello'],
+            ['/hello/x', '', '/x', 'http://host:8080/hello/x', '/hello'],
 
-            array('hello/app.php/x',      'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'),
-            array('hello/app.php/x?a=b',  'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'),
-            array('/hello/app.php/x?a=b', 'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'),
-        );
+            ['hello/app.php/x',      'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'],
+            ['hello/app.php/x?a=b',  'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'],
+            ['/hello/app.php/x?a=b', 'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'],
+        ];
     }
 
     /**
@@ -2359,16 +2359,16 @@ public function testNonstandardRequests($requestUri, $queryString, $expectedPath
             $expectedBaseUrl = $expectedBasePath;
         }
 
-        $server = array(
+        $server = [
             'HTTP_HOST' => 'host:8080',
             'SERVER_PORT' => '8080',
             'QUERY_STRING' => $queryString,
             'PHP_SELF' => '/hello/app.php',
             'SCRIPT_FILENAME' => '/some/path/app.php',
             'REQUEST_URI' => $requestUri,
-        );
+        ];
 
-        $request = new Request(array(), array(), array(), array(), array(), $server);
+        $request = new Request([], [], [], [], [], $server);
 
         $this->assertEquals($expectedPathInfo, $request->getPathInfo());
         $this->assertEquals($expectedUri, $request->getUri());
@@ -2381,7 +2381,7 @@ public function testNonstandardRequests($requestUri, $queryString, $expectedPath
 
     public function testTrustedHost()
     {
-        Request::setTrustedProxies(array('1.1.1.1'), -1);
+        Request::setTrustedProxies(['1.1.1.1'], -1);
 
         $request = Request::create('/');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
@@ -2403,7 +2403,7 @@ public function testTrustedHost()
 
     public function testTrustedPort()
     {
-        Request::setTrustedProxies(array('1.1.1.1'), -1);
+        Request::setTrustedProxies(['1.1.1.1'], -1);
 
         $request = Request::create('/');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
@@ -2433,7 +2433,7 @@ class RequestContentProxy extends Request
 {
     public function getContent($asResource = false)
     {
-        return http_build_query(array('_method' => 'PUT', 'content' => 'mycontent'), '', '&');
+        return http_build_query(['_method' => 'PUT', 'content' => 'mycontent'], '', '&');
     }
 }
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ResponseFunctionalTest.php b/src/Symfony/Component/HttpFoundation/Tests/ResponseFunctionalTest.php
index 22f25e978e5a..3d3e696c75c3 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ResponseFunctionalTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ResponseFunctionalTest.php
@@ -22,10 +22,10 @@ class ResponseFunctionalTest extends TestCase
 
     public static function setUpBeforeClass()
     {
-        $spec = array(
-            1 => array('file', '/dev/null', 'w'),
-            2 => array('file', '/dev/null', 'w'),
-        );
+        $spec = [
+            1 => ['file', '/dev/null', 'w'],
+            2 => ['file', '/dev/null', 'w'],
+        ];
         if (!self::$server = @proc_open('exec php -S localhost:8054', $spec, $pipes, __DIR__.'/Fixtures/response-functional')) {
             self::markTestSkipped('PHP server unable to start.');
         }
@@ -52,7 +52,7 @@ public function testCookie($fixture)
     public function provideCookie()
     {
         foreach (glob(__DIR__.'/Fixtures/response-functional/*.php') as $file) {
-            yield array(pathinfo($file, PATHINFO_FILENAME));
+            yield [pathinfo($file, PATHINFO_FILENAME)];
         }
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
index 06e2d41d01bb..93aacf24d799 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
@@ -22,7 +22,
10000
7 @@ class ResponseHeaderBagTest extends TestCase
 {
     public function testAllPreserveCase()
     {
-        $headers = array(
+        $headers = [
             'fOo' => 'BAR',
             'ETag' => 'xyzzy',
             'Content-MD5' => 'Q2hlY2sgSW50ZWdyaXR5IQ==',
@@ -30,7 +30,7 @@ public function testAllPreserveCase()
             'WWW-Authenticate' => 'Basic realm="WallyWorld"',
             'X-UA-Compatible' => 'IE=edge,chrome=1',
             'X-XSS-Protection' => '1; mode=block',
-        );
+        ];
 
         $bag = new ResponseHeaderBag($headers);
         $allPreservedCase = $bag->allPreserveCase();
@@ -42,45 +42,45 @@ public function testAllPreserveCase()
 
     public function testCacheControlHeader()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
-        $bag = new ResponseHeaderBag(array('Cache-Control' => 'public'));
+        $bag = new ResponseHeaderBag(['Cache-Control' => 'public']);
         $this->assertEquals('public', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('public'));
 
-        $bag = new ResponseHeaderBag(array('ETag' => 'abcde'));
+        $bag = new ResponseHeaderBag(['ETag' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('private'));
         $this->assertTrue($bag->hasCacheControlDirective('must-revalidate'));
         $this->assertFalse($bag->hasCacheControlDirective('max-age'));
 
-        $bag = new ResponseHeaderBag(array('Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT'));
+        $bag = new ResponseHeaderBag(['Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array(
+        $bag = new ResponseHeaderBag([
             'Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT',
             'Cache-Control' => 'max-age=3600',
-        ));
+        ]);
         $this->assertEquals('max-age=3600, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('Last-Modified' => 'abcde'));
+        $bag = new ResponseHeaderBag(['Last-Modified' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('Etag' => 'abcde', 'Last-Modified' => 'abcde'));
+        $bag = new ResponseHeaderBag(['Etag' => 'abcde', 'Last-Modified' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'max-age=100']);
         $this->assertEquals('max-age=100, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 's-maxage=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 's-maxage=100']);
         $this->assertEquals('s-maxage=100', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'private, max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'private, max-age=100']);
         $this->assertEquals('max-age=100, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'public, max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'public, max-age=100']);
         $this->assertEquals('max-age=100, public', $bag->get('Cache-Control'));
 
         $bag = new ResponseHeaderBag();
@@ -88,7 +88,7 @@ public function testCacheControlHeader()
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
         $bag = new ResponseHeaderBag();
-        $bag->set('Cache-Control', array('public', 'must-revalidate'));
+        $bag->set('Cache-Control', ['public', 'must-revalidate']);
         $this->assertCount(1, $bag->get('Cache-Control', null, false));
         $this->assertEquals('must-revalidate, public', $bag->get('Cache-Control'));
 
@@ -101,7 +101,7 @@ public function testCacheControlHeader()
 
     public function testCacheControlClone()
     {
-        $headers = array('foo' => 'bar');
+        $headers = ['foo' => 'bar'];
         $bag1 = new ResponseHeaderBag($headers);
         $bag2 = new ResponseHeaderBag($bag1->allPreserveCase());
         $this->assertEquals($bag1->allPreserveCase(), $bag2->allPreserveCase());
@@ -109,7 +109,7 @@ public function testCacheControlClone()
 
     public function testToStringIncludesCookieHeaders()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $bag->setCookie(new Cookie('foo', 'bar'));
 
         $this->assertSetCookieHeader('foo=bar; path=/; httponly', $bag);
@@ -121,7 +121,7 @@ public function testToStringIncludesCookieHeaders()
 
     public function testClearCookieSecureNotHttpOnly()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
 
         $bag->clearCookie('foo', '/', null, true, false);
 
@@ -130,23 +130,23 @@ public function testClearCookieSecureNotHttpOnly()
 
     public function testReplace()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
-        $bag->replace(array('Cache-Control' => 'public'));
+        $bag->replace(['Cache-Control' => 'public']);
         $this->assertEquals('public', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('public'));
     }
 
     public function testReplaceWithRemove()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
         $bag->remove('Cache-Control');
-        $bag->replace(array());
+        $bag->replace([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
     }
@@ -161,12 +161,12 @@ public function testCookiesWithSameNames()
 
         $this->assertCount(4, $bag->getCookies());
         $this->assertEquals('foo=bar; path=/path/foo; domain=foo.bar; httponly', $bag->get('set-cookie'));
-        $this->assertEquals(array(
+        $this->assertEquals([
             'foo=bar; path=/path/foo; domain=foo.bar; httponly',
             'foo=bar; path=/path/bar; domain=foo.bar; httponly',
             'foo=bar; path=/path/bar; domain=bar.foo; httponly',
             'foo=bar; path=/; httponly',
-        ), $bag->get('set-cookie', null, false));
+        ], $bag->get('set-cookie', null, false));
 
         $this->assertSetCookieHeader('foo=bar; path=/path/foo; domain=foo.bar; httponly', $bag);
         $this->assertSetCookieHeader('foo=bar; path=/path/bar; domain=foo.bar; httponly', $bag);
@@ -228,16 +228,16 @@ public function testSetCookieHeader()
     {
         $bag = new ResponseHeaderBag();
         $bag->set('set-cookie', 'foo=bar');
-        $this->assertEquals(array(new Cookie('foo', 'bar', 0, '/', null, false, false, true)), $bag->getCookies());
+        $this->assertEquals([new Cookie('foo', 'bar', 0, '/', null, false, false, true)], $bag->getCookies());
 
         $bag->set('set-cookie', 'foo2=bar2', false);
-        $this->assertEquals(array(
+        $this->assertEquals([
             new Cookie('foo', 'bar', 0, '/', null, false, false, true),
             new Cookie('foo2', 'bar2', 0, '/', null, false, false, true),
-        ), $bag->getCookies());
+        ], $bag->getCookies());
 
         $bag->remove('set-cookie');
-        $this->assertEquals(array(), $bag->getCookies());
+        $this->assertEquals([], $bag->getCookies());
     }
 
     /**
@@ -280,20 +280,20 @@ public function testToStringDoesntMessUpHeaders()
         (string) $headers;
 
         $allHeaders = $headers->allPreserveCase();
-        $this->assertEquals(array('http://www.symfony.com'), $allHeaders['Location']);
-        $this->assertEquals(array('text/html'), $allHeaders['Content-type']);
+        $this->assertEquals(['http://www.symfony.com'], $allHeaders['Location']);
+        $this->assertEquals(['text/html'], $allHeaders['Content-type']);
     }
 
     public function provideMakeDisposition()
     {
-        return array(
-            array('attachment', 'foo.html', 'foo.html', 'attachment; filename="foo.html"'),
-            array('attachment', 'foo.html', '', 'attachment; filename="foo.html"'),
-            array('attachment', 'foo bar.html', '', 'attachment; filename="foo bar.html"'),
-            array('attachment', 'foo "bar".html', '', 'attachment; filename="foo \\"bar\\".html"'),
-            array('attachment', 'foo%20bar.html', 'foo bar.html', 'attachment; filename="foo bar.html"; filename*=utf-8\'\'foo%2520bar.html'),
-            array('attachment', 'föö.html', 'foo.html', 'attachment; filename="foo.html"; filename*=utf-8\'\'f%C3%B6%C3%B6.html'),
-        );
+        return [
+            ['attachment', 'foo.html', 'foo.html', 'attachment; filename="foo.html"'],
+            ['attachment', 'foo.html', '', 'attachment; filename="foo.html"'],
+            ['attachment', 'foo bar.html', '', 'attachment; filename="foo bar.html"'],
+            ['attachment', 'foo "bar".html', '', 'attachment; filename="foo \\"bar\\".html"'],
+            ['attachment', 'foo%20bar.html', 'foo bar.html', 'attachment; filename="foo bar.html"; filename*=utf-8\'\'foo%2520bar.html'],
+            ['attachment', 'föö.html', 'foo.html', 'attachment; filename="foo.html"; filename*=utf-8\'\'f%C3%B6%C3%B6.html'],
+        ];
     }
 
     /**
@@ -309,14 +309,14 @@ public function testMakeDispositionFail($disposition, $filename)
 
     public function provideMakeDispositionFail()
     {
-        return array(
-            array('attachment', 'foo%20bar.html'),
-            array('attachment', 'foo/bar.html'),
-            array('attachment', '/foo.html'),
-            array('attachment', 'foo\bar.html'),
-            array('attachment', '\foo.html'),
-            array('attachment', 'föö.html'),
-        );
+        return [
+            ['attachment', 'foo%20bar.html'],
+            ['attachment', 'foo/bar.html'],
+            ['attachment', '/foo.html'],
+            ['attachment', 'foo\bar.html'],
+            ['attachment', '\foo.html'],
+            ['attachment', 'föö.html'],
+        ];
     }
 
     public function testDateHeaderAddedOnCreation()
@@ -332,7 +332,7 @@ public function testDateHeaderAddedOnCreation()
     public function testDateHeaderCanBeSetOnCreation()
     {
         $someDate = 'Thu, 23 Mar 2017 09:15:12 GMT';
-        $bag = new ResponseHeaderBag(array('Date' => $someDate));
+        $bag = new ResponseHeaderBag(['Date' => $someDate]);
 
         $this->assertEquals($someDate, $bag->get('Date'));
     }
@@ -340,7 +340,7 @@ public function testDateHeaderCanBeSetOnCreation()
     public function testDateHeaderWillBeRecreatedWhenRemoved()
     {
         $someDate = 'Thu, 23 Mar 2017 09:15:12 GMT';
-        $bag = new ResponseHeaderBag(array('Date' => $someDate));
+        $bag = new ResponseHeaderBag(['Date' => $someDate]);
         $bag->remove('Date');
 
         // a (new) Date header is still present
@@ -351,7 +351,7 @@ public function testDateHeaderWillBeRecreatedWhenRemoved()
     public function testDateHeaderWillBeRecreatedWhenHeadersAreReplaced()
     {
         $bag = new ResponseHeaderBag();
-        $bag->replace(array());
+        $bag->replace([]);
 
         $this->assertTrue($bag->has('Date'));
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
index 43fa9b70aa1e..f6fb1309ea1d 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
@@ -21,7 +21,7 @@ class ResponseTest extends ResponseTestCase
 {
     public function testCreate()
     {
-        $response = Response::create('foo', 301, array('Foo' => 'bar'));
+        $response = Response::create('foo', 301, ['Foo' => 'bar']);
 
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $response);
         $this->assertEquals(301, $response->getStatusCode());
@@ -253,10 +253,10 @@ public function testIsNotModifiedIfModifiedSinceAndEtagWithoutLastModified()
 
     public function testIsValidateable()
     {
-        $response = new Response('', 200, array('Last-Modified' => $this->createDateTimeOneHourAgo()->format(DATE_RFC2822)));
+        $response = new Response('', 200, ['Last-Modified' => $this->createDateTimeOneHourAgo()->format(DATE_RFC2822)]);
         $this->assertTrue($response->isValidateable(), '->isValidateable() returns true if Last-Modified is present');
 
-        $response = new Response('', 200, array('ETag' => '"12345"'));
+        $response = new Response('', 200, ['ETag' => '"12345"']);
         $this->assertTrue($response->isValidateable(), '->isValidateable() returns true if ETag is present');
 
         $response = new Response();
@@ -266,7 +266,7 @@ public function testIsValidateable()
     public function testGetDate()
     {
         $oneHourAgo = $this->createDateTimeOneHourAgo();
-        $response = new Response('', 200, array('Date' => $oneHourAgo->format(DATE_RFC2822)));
+        $response = new Response('', 200, ['Date' => $oneHourAgo->format(DATE_RFC2822)]);
         $date = $response->getDate();
         $this->assertEquals($oneHourAgo->getTimestamp(), $date->getTimestamp(), '->getDate() returns the Date header if present');
 
@@ -274,7 +274,7 @@ public function testGetDate()
         $date = $response->getDate();
         $this->assertEquals(time(), $date->getTimestamp(), '->getDate() returns the current Date if no Date header present');
 
-        $response = new Response('', 200, array('Date' => $this->createDateTimeOneHourAgo()->format(DATE_RFC2822)));
+        $response = new Response('', 200, ['Date' => $this->createDateTimeOneHourAgo()->format(DATE_RFC2822)]);
         $now = $this->createDateTimeNow();
         $response->headers->set('Date', $now->format(DATE_RFC2822));
         $date = $response->getDate();
@@ -414,21 +414,21 @@ public function testGetSetProtocolVersion()
     public function testGetVary()
     {
         $response = new Response();
-        $this->assertEquals(array(), $response->getVary(), '->getVary() returns an empty array if no Vary header is present');
+        $this->assertEquals([], $response->getVary(), '->getVary() returns an empty array if no Vary header is present');
 
         $response = new Response();
         $response->headers->set('Vary', 'Accept-Language');
-        $this->assertEquals(array('Accept-Language'), $response->getVary(), '->getVary() parses a single header name value');
+        $this->assertEquals(['Accept-Language'], $response->getVary(), '->getVary() parses a single header name value');
 
         $response = new Response();
         $response->headers->set('Vary', 'Accept-Language User-Agent    X-Foo');
-        $this->assertEquals(array('Accept-Language', 'User-Agent', 'X-Foo'), $response->getVary(), '->getVary() parses multiple header name values separated by spaces');
+        $this->assertEquals(['Accept-Language', 'User-Agent', 'X-Foo'], $response->getVary(), '->getVary() parses multiple header name values separated by spaces');
 
         $response = new Response();
         $response->headers->set('Vary', 'Accept-Language,User-Agent,    X-Foo');
-        $this->assertEquals(array('Accept-Language', 'User-Agent', 'X-Foo'), $response->getVary(), '->getVary() parses multiple header name values separated by commas');
+        $this->assertEquals(['Accept-Language', 'User-Agent', 'X-Foo'], $response->getVary(), '->getVary() parses multiple header name values separated by commas');
 
-        $vary = array('Accept-Language', 'User-Agent', 'X-foo');
+        $vary = ['Accept-Language', 'User-Agent', 'X-foo'];
 
         $response = new Response();
         $response->headers->set('Vary', $vary);
@@ -443,18 +443,18 @@ public function testSetVary()
     {
         $response = new Response();
         $response->setVary('Accept-Language');
-        $this->assertEquals(array('Accept-Language'), $response->getVary());
+        $this->assertEquals(['Accept-Language'], $response->getVary());
 
         $response->setVary('Accept-Language, User-Agent');
-        $this->assertEquals(array('Accept-Language', 'User-Agent'), $response->getVary(), '->setVary() replace the vary header by default');
+        $this->assertEquals(['Accept-Language', 'User-Agent'], $response->getVary(), '->setVary() replace the vary header by default');
 
         $response->setVary('X-Foo', false);
-        $this->assertEquals(array('Accept-Language', 'User-Agent', 'X-Foo'), $response->getVary(), '->setVary() doesn\'t wipe out earlier Vary headers if replace is set to false');
+        $this->assertEquals(['Accept-Language', 'User-Agent', 'X-Foo'], $response->getVary(), '->setVary() doesn\'t wipe out earlier Vary headers if replace is set to false');
     }
 
     public function testDefaultContentType()
     {
-        $headerMock = $this->getMockBuilder('Symfony\Component\HttpFoundation\ResponseHeaderBag')->setMethods(array('set'))->getMock();
+        $headerMock = $this->getMockBuilder('Symfony\Component\HttpFoundation\ResponseHeaderBag')->setMethods(['set'])->getMock();
         $headerMock->expects($this->at(0))
             ->method('set')
             ->with('Content-Type', 'text/html');
@@ -578,53 +578,53 @@ public function testSetCache()
         $response = new Response();
         //array('etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public')
         try {
-            $response->setCache(array('wrong option' => 'value'));
+            $response->setCache(['wrong option' => 'value']);
             $this->fail('->setCache() throws an InvalidArgumentException if an option is not supported');
         } catch (\Exception $e) {
             $this->assertInstanceOf('InvalidArgumentException', $e, '->setCache() throws an InvalidArgumentException if an option is not supported');
             $this->assertContains('"wrong option"', $e->getMessage());
         }
 
-        $options = array('etag' => '"whatever"');
+        $options = ['etag' => '"whatever"'];
         $response->setCache($options);
         $this->assertEquals($response->getEtag(), '"whatever"');
 
         $now = $this->createDateTimeNow();
-        $options = array('last_modified' => $now);
+        $options = ['last_modified' => $now];
         $response->setCache($options);
         $this->assertEquals($response->getLastModified()->getTimestamp(), $now->getTimestamp());
 
-        $options = array('max_age' => 100);
+        $options = ['max_age' => 100];
         $response->setCache($options);
         $this->assertEquals($response->getMaxAge(), 100);
 
-        $options = array('s_maxage' => 200);
+        $options = ['s_maxage' => 200];
         $response->setCache($options);
         $this->assertEquals($response->getMaxAge(), 200);
 
         $this->assertTrue($response->headers->hasCacheControlDirective('public'));
         $this->assertFalse($response->headers->hasCacheControlDirective('private'));
 
-        $response->setCache(array('public' => true));
+        $response->setCache(['public' => true]);
         $this->assertTrue($response->headers->hasCacheControlDirective('public'));
         $this->assertFalse($response->headers->hasCacheControlDirective('private'));
 
-        $response->setCache(array('public' => false));
+        $response->setCache(['public' => false]);
         $this->assertFalse($response->headers->hasCacheControlDirective('public'));
         $this->assertTrue($response->headers->hasCacheControlDirective('private'));
 
-        $response->setCache(array('private' => true));
+        $response->setCache(['private' => true]);
         $this->assertFalse($response->headers->hasCacheControlDirective('public'));
         $this->assertTrue($response->headers->hasCacheControlDirective('private'));
 
-        $response->setCache(array('private' => false));
+        $response->setCache(['private' => false]);
         $this->assertTrue($response->headers->hasCacheControlDirective('public'));
         $this->assertFalse($response->headers->hasCacheControlDirective('private'));
 
-        $response->setCache(array('immutable' => true));
+        $response->setCache(['immutable' => true]);
         $this->assertTrue($response->headers->hasCacheControlDirective('immutable'));
 
-        $response->setCache(array('immutable' => false));
+        $response->setCache(['immutable' => false]);
         $this->assertFalse($response->headers->hasCacheControlDirective('immutable'));
     }
 
@@ -725,14 +725,14 @@ public function testSetStatusCode($code, $text, $expectedText)
 
     public function getStatusCodeFixtures()
     {
-        return array(
-            array('200', null, 'OK'),
-            array('200', false, ''),
-            array('200', 'foo', 'foo'),
-            array('199', null, 'unknown status'),
-            array('199', false, ''),
-            array('199', 'foo', 'foo'),
-        );
+        return [
+            ['200', null, 'OK'],
+            ['200', false, ''],
+            ['200', 'foo', 'foo'],
+            ['199', null, 'unknown status'],
+            ['199', false, ''],
+            ['199', 'foo', 'foo'],
+        ];
     }
 
     public function testIsInformational()
@@ -746,7 +746,7 @@ public function testIsInformational()
 
     public function testIsRedirectRedirection()
     {
-        foreach (array(301, 302, 303, 307) as $code) {
+        foreach ([301, 302, 303, 307] as $code) {
             $response = new Response('', $code);
             $this->assertTrue($response->isRedirection());
             $this->assertTrue($response->isRedirect());
@@ -764,7 +764,7 @@ public function testIsRedirectRedirection()
         $this->assertFalse($response->isRedirection());
         $this->assertFalse($response->isRedirect());
 
-        $response = new Response('', 301, array('Location' => '/good-uri'));
+        $response = new Response('', 301, ['Location' => '/good-uri']);
         $this->assertFalse($response->isRedirect('/bad-uri'));
         $this->assertTrue($response->isRedirect('/good-uri'));
     }
@@ -780,7 +780,7 @@ public function testIsNotFound()
 
     public function testIsEmpty()
     {
-        foreach (array(204, 304) as $code) {
+        foreach ([204, 304] as $code) {
             $response = new Response('', $code);
             $this->assertTrue($response->isEmpty());
         }
@@ -829,7 +829,7 @@ public function testHasVary()
 
     public function testSetEtag()
     {
-        $response = new Response('', 200, array('ETag' => '"12345"'));
+        $response = new Response('', 200, ['ETag' => '"12345"']);
         $response->setEtag();
 
         $this->assertNull($response->headers->get('Etag'), '->setEtag() removes Etags when call with null');
@@ -859,7 +859,7 @@ public function testSettersAreChainable()
     {
         $response = new Response();
 
-        $setters = array(
+        $setters = [
             'setProtocolVersion' => '1.0',
             'setCharset' => 'UTF-8',
             'setPublic' => null,
@@ -870,7 +870,7 @@ public function testSettersAreChainable()
             'setSharedMaxAge' => 1,
             'setTtl' => 1,
             'setClientTtl' => 1,
-        );
+        ];
 
         foreach ($setters as $setter => $arg) {
             $this->assertEquals($response, $response->{$setter}($arg));
@@ -889,20 +889,20 @@ public function testNoDeprecationsAreTriggered()
 
     public function validContentProvider()
     {
-        return array(
-            'obj' => array(new StringableObject()),
-            'string' => array('Foo'),
-            'int' => array(2),
-        );
+        return [
+            'obj' => [new StringableObject()],
+            'string' => ['Foo'],
+            'int' => [2],
+        ];
     }
 
     public function invalidContentProvider()
     {
-        return array(
-            'obj' => array(new \stdClass()),
-            'array' => array(array()),
-            'bool' => array(true, '1'),
-        );
+        return [
+            'obj' => [new \stdClass()],
+            'array' => [[]],
+            'bool' => [true, '1'],
+        ];
     }
 
     protected function createDateTimeOneHourAgo()
@@ -942,19 +942,19 @@ public function ianaCodesReasonPhrasesProvider()
 
         $ianaHttpStatusCodes = new \DOMDocument();
 
-        libxml_set_streams_context(stream_context_create(array(
-            'http' => array(
+        libxml_set_streams_context(stream_context_create([
+            'http' => [
                 'method' => 'GET',
                 'timeout' => 30,
-            ),
-        )));
+            ],
+        ]));
 
         $ianaHttpStatusCodes->load('https://www.iana.org/assignments/http-status-codes/http-status-codes.xml');
         if (!$ianaHttpStatusCodes->relaxNGValidate(__DIR__.'/schema/http-status-codes.rng')) {
             self::fail('Invalid IANA\'s HTTP status code list.');
         }
 
-        $ianaCodesReasonPhrases = array();
+        $ianaCodesReasonPhrases = [];
 
         $xpath = new \DOMXPath($ianaHttpStatusCodes);
         $xpath->registerNamespace('ns', 'http://www.iana.org/assignments');
@@ -964,16 +964,16 @@ public function ianaCodesReasonPhrasesProvider()
             $value = $xpath->query('.//ns:value', $record)->item(0)->nodeValue;
             $description = $xpath->query('.//ns:description', $record)->item(0)->nodeValue;
 
-            if (\in_array($description, array('Unassigned', '(Unused)'), true)) {
+            if (\in_array($description, ['Unassigned', '(Unused)'], true)) {
                 continue;
             }
 
             if (preg_match('/^([0-9]+)\s*\-\s*([0-9]+)$/', $value, $matches)) {
                 for ($value = $matches[1]; $value <= $matches[2]; ++$value) {
-                    $ianaCodesReasonPhrases[] = array($value, $description);
+                    $ianaCodesReasonPhrases[] = [$value, $description];
                 }
             } else {
-                $ianaCodesReasonPhrases[] = array($value, $description);
+                $ianaCodesReasonPhrases[] = [$value, $description];
             }
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ServerBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/ServerBagTest.php
index f8becec5a982..0663b118e675 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ServerBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ServerBagTest.php
@@ -23,7 +23,7 @@ class ServerBagTest extends TestCase
 {
     public function testShouldExtractHeadersFromServerArray()
     {
-        $server = array(
+        $server = [
             'SOME_SERVER_VARIABLE' => 'value',
             'SOME_SERVER_VARIABLE2' => 'value',
             'ROOT' => 'value',
@@ -32,45 +32,45 @@ public function testShouldExtractHeadersFromServerArray()
             'HTTP_ETAG' => 'asdf',
             'PHP_AUTH_USER' => 'foo',
             'PHP_AUTH_PW' => 'bar',
-        );
+        ];
 
         $bag = new ServerBag($server);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'CONTENT_TYPE' => 'text/html',
             'CONTENT_LENGTH' => '0',
             'ETAG' => 'asdf',
             'AUTHORIZATION' => 'Basic '.base64_encode('foo:bar'),
             'PHP_AUTH_USER' => 'foo',
             'PHP_AUTH_PW' => 'bar',
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     public function testHttpPasswordIsOptional()
     {
-        $bag = new ServerBag(array('PHP_AUTH_USER' => 'foo'));
+        $bag = new ServerBag(['PHP_AUTH_USER' => 'foo']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => 'Basic '.base64_encode('foo:'),
             'PHP_AUTH_USER' => 'foo',
             'PHP_AUTH_PW' => '',
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     public function testHttpBasicAuthWithPhpCgi()
     {
-        $bag = new ServerBag(array('HTTP_AUTHORIZATION' => 'Basic '.base64_encode('foo:bar')));
+        $bag = new ServerBag(['HTTP_AUTHORIZATION' => 'Basic '.base64_encode('foo:bar')]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => 'Basic '.base64_encode('foo:bar'),
             'PHP_AUTH_USER' => 'foo',
             'PHP_AUTH_PW' => 'bar',
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     public function testHttpBasicAuthWithPhpCgiBogus()
     {
-        $bag = new ServerBag(array('HTTP_AUTHORIZATION' => 'Basic_'.base64_encode('foo:bar')));
+        $bag = new ServerBag(['HTTP_AUTHORIZATION' => 'Basic_'.base64_encode('foo:bar')]);
 
         // Username and passwords should not be set as the header is bogus
         $headers = $bag->getHeaders();
@@ -80,41 +80,41 @@ public function testHttpBasicAuthWithPhpCgiBogus()
 
     public function testHttpBasicAuthWithPhpCgiRedirect()
     {
-        $bag = new ServerBag(array('REDIRECT_HTTP_AUTHORIZATION' => 'Basic '.base64_encode('username:pass:word')));
+        $bag = new ServerBag(['REDIRECT_HTTP_AUTHORIZATION' => 'Basic '.base64_encode('username:pass:word')]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => 'Basic '.base64_encode('username:pass:word'),
             'PHP_AUTH_USER' => 'username',
             'PHP_AUTH_PW' => 'pass:word',
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     public function testHttpBasicAuthWithPhpCgiEmptyPassword()
     {
-        $bag = new ServerBag(array('HTTP_AUTHORIZATION' => 'Basic '.base64_encode('foo:')));
+        $bag = new ServerBag(['HTTP_AUTHORIZATION' => 'Basic '.base64_encode('foo:')]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => 'Basic '.base64_encode('foo:'),
             'PHP_AUTH_USER' => 'foo',
             'PHP_AUTH_PW' => '',
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     public function testHttpDigestAuthWithPhpCgi()
     {
         $digest = 'Digest username="foo", realm="acme", nonce="'.md5('secret').'", uri="/protected, qop="auth"';
-        $bag = new ServerBag(array('HTTP_AUTHORIZATION' => $digest));
+        $bag = new ServerBag(['HTTP_AUTHORIZATION' => $digest]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => $digest,
             'PHP_AUTH_DIGEST' => $digest,
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     public function testHttpDigestAuthWithPhpCgiBogus()
     {
         $digest = 'Digest_username="foo", realm="acme", nonce="'.md5('secret').'", uri="/protected, qop="auth"';
-        $bag = new ServerBag(array('HTTP_AUTHORIZATION' => $digest));
+        $bag = new ServerBag(['HTTP_AUTHORIZATION' => $digest]);
 
         // Username and passwords should not be set as the header is bogus
         $headers = $bag->getHeaders();
@@ -125,32 +125,32 @@ public function testHttpDigestAuthWithPhpCgiBogus()
     public function testHttpDigestAuthWithPhpCgiRedirect()
     {
         $digest = 'Digest username="foo", realm="acme", nonce="'.md5('secret').'", uri="/protected, qop="auth"';
-        $bag = new ServerBag(array('REDIRECT_HTTP_AUTHORIZATION' => $digest));
+        $bag = new ServerBag(['REDIRECT_HTTP_AUTHORIZATION' => $digest]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => $digest,
             'PHP_AUTH_DIGEST' => $digest,
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     public function testOAuthBearerAuth()
     {
         $headerContent = 'Bearer L-yLEOr9zhmUYRkzN1jwwxwQ-PBNiKDc8dgfB4hTfvo';
-        $bag = new ServerBag(array('HTTP_AUTHORIZATION' => $headerContent));
+        $bag = new ServerBag(['HTTP_AUTHORIZATION' => $headerContent]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => $headerContent,
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     public function testOAuthBearerAuthWithRedirect()
     {
         $headerContent = 'Bearer L-yLEOr9zhmUYRkzN1jwwxwQ-PBNiKDc8dgfB4hTfvo';
-        $bag = new ServerBag(array('REDIRECT_HTTP_AUTHORIZATION' => $headerContent));
+        $bag = new ServerBag(['REDIRECT_HTTP_AUTHORIZATION' => $headerContent]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => $headerContent,
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 
     /**
@@ -159,12 +159,12 @@ public function testOAuthBearerAuthWithRedirect()
     public function testItDoesNotOverwriteTheAuthorizationHeaderIfItIsAlreadySet()
     {
         $headerContent = 'Bearer L-yLEOr9zhmUYRkzN1jwwxwQ-PBNiKDc8dgfB4hTfvo';
-        $bag = new ServerBag(array('PHP_AUTH_USER' => 'foo', 'HTTP_AUTHORIZATION' => $headerContent));
+        $bag = new ServerBag(['PHP_AUTH_USER' => 'foo', 'HTTP_AUTHORIZATION' => $headerContent]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'AUTHORIZATION' => $headerContent,
             'PHP_AUTH_USER' => 'foo',
             'PHP_AUTH_PW' => '',
-        ), $bag->getHeaders());
+        ], $bag->getHeaders());
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/AttributeBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/AttributeBagTest.php
index 43644e23eab2..3f2f7b3c8f34 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/AttributeBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/AttributeBagTest.php
@@ -21,7 +21,7 @@
  */
 class AttributeBagTest extends TestCase
 {
-    private $array = array();
+    private $array = [];
 
     /**
      * @var AttributeBag
@@ -30,21 +30,21 @@ class AttributeBagTest extends TestCase
 
     protected function setUp()
     {
-        $this->array = array(
+        $this->array = [
             'hello' => 'world',
             'always' => 'be happy',
             'user.login' => 'drak',
-            'csrf.token' => array(
+            'csrf.token' => [
                 'a' => '1234',
                 'b' => '4321',
-            ),
-            'category' => array(
-                'fishing' => array(
+            ],
+            'category' => [
+                'fishing' => [
                     'first' => 'cod',
                     'second' => 'sole',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $this->bag = new AttributeBag('_sf2');
         $this->bag->initialize($this->array);
     }
@@ -52,7 +52,7 @@ protected function setUp()
     protected function tearDown()
     {
         $this->bag = null;
-        $this->array = array();
+        $this->array = [];
     }
 
     public function testInitialize()
@@ -60,7 +60,7 @@ public function testInitialize()
         $bag = new AttributeBag();
         $bag->initialize($this->array);
         $this->assertEquals($this->array, $bag->all());
-        $array = array('should' => 'change');
+        $array = ['should' => 'change'];
         $bag->initialize($array);
         $this->assertEquals($array, $bag->all());
     }
@@ -122,7 +122,7 @@ public function testAll()
 
     public function testReplace()
     {
-        $array = array();
+        $array = [];
         $array['name'] = 'jack';
         $array['foo.bar'] = 'beep';
         $this->bag->replace($array);
@@ -150,22 +150,22 @@ public function testRemove()
     public function testClear()
     {
         $this->bag->clear();
-        $this->assertEquals(array(), $this->bag->all());
+        $this->assertEquals([], $this->bag->all());
     }
 
     public function attributesProvider()
     {
-        return array(
-            array('hello', 'world', true),
-            array('always', 'be happy', true),
-            array('user.login', 'drak', true),
-            array('csrf.token', array('a' => '1234', 'b' => '4321'), true),
-            array('category', array('fishing' => array('first' => 'cod', 'second' => 'sole')), true),
-            array('user2.login', null, false),
-            array('never', null, false),
-            array('bye', null, false),
-            array('bye/for/now', null, false),
-        );
+        return [
+            ['hello', 'world', true],
+            ['always', 'be happy', true],
+            ['user.login', 'drak', true],
+            ['csrf.token', ['a' => '1234', 'b' => '4321'], true],
+            ['category', ['fishing' => ['first' => 'cod', 'second' => 'sole']], true],
+            ['user2.login', null, false],
+            ['never', null, false],
+            ['bye', null, false],
+            ['bye/for/now', null, false],
+        ];
     }
 
     public function testGetIterator()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/NamespacedAttributeBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/NamespacedAttributeBagTest.php
index ec4cd5ad1a14..6b4bb17d696f 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/NamespacedAttributeBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/NamespacedAttributeBagTest.php
@@ -21,7 +21,7 @@
  */
 class NamespacedAttributeBagTest extends TestCase
 {
-    private $array = array();
+    private $array = [];
 
     /**
      * @var NamespacedAttributeBag
@@ -30,21 +30,21 @@ class NamespacedAttributeBagTest extends TestCase
 
     protected function setUp()
     {
-        $this->array = array(
+        $this->array = [
             'hello' => 'world',
             'always' => 'be happy',
             'user.login' => 'drak',
-            'csrf.token' => array(
+            'csrf.token' => [
                 'a' => '1234',
                 'b' => '4321',
-            ),
-            'category' => array(
-                'fishing' => array(
+            ],
+            'category' => [
+                'fishing' => [
                     'first' => 'cod',
                     'second' => 'sole',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $this->bag = new NamespacedAttributeBag('_sf2', '/');
         $this->bag->initialize($this->array);
     }
@@ -52,7 +52,7 @@ protected function setUp()
     protected function tearDown()
     {
         $this->bag = null;
-        $this->array = array();
+        $this->array = [];
     }
 
     public function testInitialize()
@@ -60,7 +60,7 @@ public function testInitialize()
         $bag = new NamespacedAttributeBag();
         $bag->initialize($this->array);
         $this->assertEquals($this->array, $this->bag->all());
-        $array = array('should' => 'not stick');
+        $array = ['should' => 'not stick'];
         $bag->initialize($array);
 
         // should have remained the same
@@ -139,7 +139,7 @@ public function testAll()
 
     public function testReplace()
     {
-        $array = array();
+        $array = [];
         $array['name'] = 'jack';
         $array['foo.bar'] = 'beep';
         $this->bag->replace($array);
@@ -177,28 +177,28 @@ public function testRemoveNonexistingNamespacedAttribute()
     public function testClear()
     {
         $this->bag->clear();
-        $this->assertEquals(array(), $this->bag->all());
+        $this->assertEquals([], $this->bag->all());
     }
 
     public function attributesProvider()
     {
-        return array(
-            array('hello', 'world', true),
-            array('always', 'be happy', true),
-            array('user.login', 'drak', true),
-            array('csrf.token', array('a' => '1234', 'b' => '4321'), true),
-            array('csrf.token/a', '1234', true),
-            array('csrf.token/b', '4321', true),
-            array('category', array('fishing' => array('first' => 'cod', 'second' => 'sole')), true),
-            array('category/fishing', array('first' => 'cod', 'second' => 'sole'), true),
-            array('category/fishing/missing/first', null, false),
-            array('category/fishing/first', 'cod', true),
-            array('category/fishing/second', 'sole', true),
-            array('category/fishing/missing/second', null, false),
-            array('user2.login', null, false),
-            array('never', null, false),
-            array('bye', null, false),
-            array('bye/for/now', null, false),
-        );
+        return [
+            ['hello', 'world', true],
+            ['always', 'be happy', true],
+            ['user.login', 'drak', true],
+            ['csrf.token', ['a' => '1234', 'b' => '4321'], true],
+            ['csrf.token/a', '1234', true],
+            ['csrf.token/b', '4321', true],
+            ['category', ['fishing' => ['first' => 'cod', 'second' => 'sole']], true],
+            ['category/fishing', ['first' => 'cod', 'second' => 'sole'], true],
+            ['category/fishing/missing/first', null, false],
+            ['category/fishing/first', 'cod', true],
+            ['category/fishing/second', 'sole', true],
+            ['category/fishing/missing/second', null, false],
+            ['user2.login', null, false],
+            ['never', null, false],
+            ['bye', null, false],
+            ['bye/for/now', null, false],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/AutoExpireFlashBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
index fa8626ab923b..b4e2c3a5ad30 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
@@ -26,13 +26,13 @@ class AutoExpireFlashBagTest extends TestCase
      */
     private $bag;
 
-    protected $array = array();
+    protected $array = [];
 
     protected function setUp()
     {
         parent::setUp();
         $this->bag = new FlashBag();
-        $this->array = array('new' => array('notice' => array('A previous flash message')));
+        $this->array = ['new' => ['notice' => ['A previous flash message']]];
         $this->bag->initialize($this->array);
     }
 
@@ -45,16 +45,16 @@ protected function tearDown()
     public function testInitialize()
     {
         $bag = new FlashBag();
-        $array = array('new' => array('notice' => array('A previous flash message')));
+        $array = ['new' => ['notice' => ['A previous flash message']]];
         $bag->initialize($array);
-        $this->assertEquals(array('A previous flash message'), $bag->peek('notice'));
-        $array = array('new' => array(
-                'notice' => array('Something else'),
-                'error' => array('a'),
-            ));
+        $this->assertEquals(['A previous flash message'], $bag->peek('notice'));
+        $array = ['new' => [
+                'notice' => ['Something else'],
+                'error' => ['a'],
+            ]];
         $bag->initialize($array);
-        $this->assertEquals(array('Something else'), $bag->peek('notice'));
-        $this->assertEquals(array('a'), $bag->peek('error'));
+        $this->assertEquals(['Something else'], $bag->peek('notice'));
+        $this->assertEquals(['a'], $bag->peek('error'));
     }
 
     public function testGetStorageKey()
@@ -73,16 +73,16 @@ public function testGetSetName()
 
     public function testPeek()
     {
-        $this->assertEquals(array(), $this->bag->peek('non_existing'));
-        $this->assertEquals(array('default'), $this->bag->peek('non_existing', array('default')));
-        $this->assertEquals(array('A previous flash message'), $this->bag->peek('notice'));
-        $this->assertEquals(array('A previous flash message'), $this->bag->peek('notice'));
+        $this->assertEquals([], $this->bag->peek('non_existing'));
+        $this->assertEquals(['default'], $this->bag->peek('non_existing', ['default']));
+        $this->assertEquals(['A previous flash message'], $this->bag->peek('notice'));
+        $this->assertEquals(['A previous flash message'], $this->bag->peek('notice'));
     }
 
     public function testSet()
     {
         $this->bag->set('notice', 'Foo');
-        $this->assertEquals(array('A previous flash message'), $this->bag->peek('notice'));
+        $this->assertEquals(['A previous flash message'], $this->bag->peek('notice'));
     }
 
     public function testHas()
@@ -93,43 +93,43 @@ public function testHas()
 
     public function testKeys()
     {
-        $this->assertEquals(array('notice'), $this->bag->keys());
+        $this->assertEquals(['notice'], $this->bag->keys());
     }
 
     public function testPeekAll()
     {
-        $array = array(
-            'new' => array(
+        $array = [
+            'new' => [
                 'notice' => 'Foo',
                 'error' => 'Bar',
-            ),
-        );
+            ],
+        ];
 
         $this->bag->initialize($array);
-        $this->assertEquals(array(
+        $this->assertEquals([
             'notice' => 'Foo',
             'error' => 'Bar',
-            ), $this->bag->peekAll()
+            ], $this->bag->peekAll()
         );
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'notice' => 'Foo',
             'error' => 'Bar',
-            ), $this->bag->peekAll()
+            ], $this->bag->peekAll()
         );
     }
 
     public function testGet()
     {
-        $this->assertEquals(array(), $this->bag->get('non_existing'));
-        $this->assertEquals(array('default'), $this->bag->get('non_existing', array('default')));
-        $this->assertEquals(array('A previous flash message'), $this->bag->get('notice'));
-        $this->assertEquals(array(), $this->bag->get('notice'));
+        $this->assertEquals([], $this->bag->get('non_existing'));
+        $this->assertEquals(['default'], $this->bag->get('non_existing', ['default']));
+        $this->assertEquals(['A previous flash message'], $this->bag->get('notice'));
+        $this->assertEquals([], $this->bag->get('notice'));
     }
 
     public function testSetAll()
     {
-        $this->bag->setAll(array('a' => 'first', 'b' => 'second'));
+        $this->bag->setAll(['a' => 'first', 'b' => 'second']);
         $this->assertFalse($this->bag->has('a'));
         $this->assertFalse($this->bag->has('b'));
     }
@@ -138,17 +138,17 @@ public function testAll()
     {
         $this->bag->set('notice', 'Foo');
         $this->bag->set('error', 'Bar');
-        $this->assertEquals(array(
-            'notice' => array('A previous flash message'),
-            ), $this->bag->all()
+        $this->assertEquals([
+            'notice' => ['A previous flash message'],
+            ], $this->bag->all()
         );
 
-        $this->assertEquals(array(), $this->bag->all());
+        $this->assertEquals([], $this->bag->all());
     }
 
     public function testClear()
     {
-        $this->assertEquals(array('notice' => array('A previous flash message')), $this->bag->clear());
+        $this->assertEquals(['notice' => ['A previous flash message']], $this->bag->clear());
     }
 
     public function testDoNotRemoveTheNewFlashesWhenDisplayingTheExistingOnes()
@@ -156,6 +156,6 @@ public function testDoNotRemoveTheNewFlashesWhenDisplayingTheExistingOnes()
         $this->bag->add('success', 'Something');
         $this->bag->all();
 
-        $this->assertEquals(array('new' => array('success' => array('Something')), 'display' => array()), $this->array);
+        $this->assertEquals(['new' => ['success' => ['Something']], 'display' => []], $this->array);
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/FlashBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/FlashBagTest.php
index 905a1f751730..6d8619e078a1 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/FlashBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/FlashBagTest.php
@@ -26,13 +26,13 @@ class FlashBagTest extends TestCase
      */
     private $bag;
 
-    protected $array = array();
+    protected $array = [];
 
     protected function setUp()
     {
         parent::setUp();
         $this->bag = new FlashBag();
-        $this->array = array('notice' => array('A previous flash message'));
+        $this->array = ['notice' => ['A previous flash message']];
         $this->bag->initialize($this->array);
     }
 
@@ -47,7 +47,7 @@ public function testInitialize()
         $bag = new FlashBag();
         $bag->initialize($this->array);
         $this->assertEquals($this->array, $bag->peekAll());
-        $array = array('should' => array('change'));
+        $array = ['should' => ['change']];
         $bag->initialize($array);
         $this->assertEquals($array, $bag->peekAll());
     }
@@ -68,49 +68,49 @@ public function testGetSetName()
 
     public function testPeek()
     {
-        $this->assertEquals(array(), $this->bag->peek('non_existing'));
-        $this->assertEquals(array('default'), $this->bag->peek('not_existing', array('default')));
-        $this->assertEquals(array('A previous flash message'), $this->bag->peek('notice'));
-        $this->assertEquals(array('A previous flash message'), $this->bag->peek('notice'));
+        $this->assertEquals([], $this->bag->peek('non_existing'));
+        $this->assertEquals(['default'], $this->bag->peek('not_existing', ['default']));
+        $this->assertEquals(['A previous flash message'], $this->bag->peek('notice'));
+        $this->assertEquals(['A previous flash message'], $this->bag->peek('notice'));
     }
 
     public function testAdd()
     {
-        $tab = array('bar' => 'baz');
+        $tab = ['bar' => 'baz'];
         $this->bag->add('string_message', 'lorem');
         $this->bag->add('object_message', new \stdClass());
         $this->bag->add('array_message', $tab);
 
-        $this->assertEquals(array('lorem'), $this->bag->get('string_message'));
-        $this->assertEquals(array(new \stdClass()), $this->bag->get('object_message'));
-        $this->assertEquals(array($tab), $this->bag->get('array_message'));
+        $this->assertEquals(['lorem'], $this->bag->get('string_message'));
+        $this->assertEquals([new \stdClass()], $this->bag->get('object_message'));
+        $this->assertEquals([$tab], $this->bag->get('array_message'));
     }
 
     public function testGet()
     {
-        $this->assertEquals(array(), $this->bag->get('non_existing'));
-        $this->assertEquals(array('default'), $this->bag->get('not_existing', array('default')));
-        $this->assertEquals(array('A previous flash message'), $this->bag->get('notice'));
-        $this->assertEquals(array(), $this->bag->get('notice'));
+        $this->assertEquals([], $this->bag->get('non_existing'));
+        $this->assertEquals(['default'], $this->bag->get('not_existing', ['default']));
+        $this->assertEquals(['A previous flash message'], $this->bag->get('notice'));
+        $this->assertEquals([], $this->bag->get('notice'));
     }
 
     public function testAll()
     {
         $this->bag->set('notice', 'Foo');
         $this->bag->set('error', 'Bar');
-        $this->assertEquals(array(
-            'notice' => array('Foo'),
-            'error' => array('Bar'), ), $this->bag->all()
+        $this->assertEquals([
+            'notice' => ['Foo'],
+            'error' => ['Bar'], ], $this->bag->all()
         );
 
-        $this->assertEquals(array(), $this->bag->all());
+        $this->assertEquals([], $this->bag->all());
     }
 
     public function testSet()
     {
         $this->bag->set('notice', 'Foo');
         $this->bag->set('notice', 'Bar');
-        $this->assertEquals(array('Bar'), $this->bag->peek('notice'));
+        $this->assertEquals(['Bar'], $this->bag->peek('notice'));
     }
 
     public function testHas()
@@ -121,7 +121,7 @@ public function testHas()
 
     public function testKeys()
     {
-        $this->assertEquals(array('notice'), $this->bag->keys());
+        $this->assertEquals(['notice'], $this->bag->keys());
     }
 
     public function testSetAll()
@@ -130,28 +130,28 @@ public function testSetAll()
         $this->bag->add('another_flash', 'Bar');
         $this->assertTrue($this->bag->has('one_flash'));
         $this->assertTrue($this->bag->has('another_flash'));
-        $this->bag->setAll(array('unique_flash' => 'FooBar'));
+        $this->bag->setAll(['unique_flash' => 'FooBar']);
         $this->assertFalse($this->bag->has('one_flash'));
         $this->assertFalse($this->bag->has('another_flash'));
-        $this->assertSame(array('unique_flash' => 'FooBar'), $this->bag->all());
-        $this->assertSame(array(), $this->bag->all());
+        $this->assertSame(['unique_flash' => 'FooBar'], $this->bag->all());
+        $this->assertSame([], $this->bag->all());
     }
 
     public function testPeekAll()
     {
         $this->bag->set('notice', 'Foo');
         $this->bag->set('error', 'Bar');
-        $this->assertEquals(array(
-            'notice' => array('Foo'),
-            'error' => array('Bar'),
-            ), $this->bag->peekAll()
+        $this->assertEquals([
+            'notice' => ['Foo'],
+            'error' => ['Bar'],
+            ], $this->bag->peekAll()
         );
         $this->assertTrue($this->bag->has('notice'));
         $this->assertTrue($this->bag->has('error'));
-        $this->assertEquals(array(
-            'notice' => array('Foo'),
-            'error' => array('Bar'),
-            ), $this->bag->peekAll()
+        $this->assertEquals([
+            'notice' => ['Foo'],
+            'error' => ['Bar'],
+            ], $this->bag->peekAll()
         );
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/SessionTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/SessionTest.php
index 63351e575a3c..afa00fc7c304 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/SessionTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/SessionTest.php
@@ -127,10 +127,10 @@ public function testHas($key, $value)
 
     public function testReplace()
     {
-        $this->session->replace(array('happiness' => 'be good', 'symfony' => 'awesome'));
-        $this->assertEquals(array('happiness' => 'be good', 'symfony' => 'awesome'), $this->session->all());
-        $this->session->replace(array());
-        $this->assertEquals(array(), $this->session->all());
+        $this->session->replace(['happiness' => 'be good', 'symfony' => 'awesome']);
+        $this->assertEquals(['happiness' => 'be good', 'symfony' => 'awesome'], $this->session->all());
+        $this->session->replace([]);
+        $this->assertEquals([], $this->session->all());
     }
 
     /**
@@ -150,16 +150,16 @@ public function testClear($key, $value)
         $this->session->set('hi', 'fabien');
         $this->session->set($key, $value);
         $this->session->clear();
-        $this->assertEquals(array(), $this->session->all());
+        $this->assertEquals([], $this->session->all());
     }
 
     public function setProvider()
     {
-        return array(
-            array('foo', 'bar', array('foo' => 'bar')),
-            array('foo.bar', 'too much beer', array('foo.bar' => 'too much beer')),
-            array('great', 'symfony is great', array('great' => 'symfony is great')),
-        );
+        return [
+            ['foo', 'bar', ['foo' => 'bar']],
+            ['foo.bar', 'too much beer', ['foo.bar' => 'too much beer']],
+            ['great', 'symfony is great', ['great' => 'symfony is great']],
+        ];
     }
 
     /**
@@ -170,14 +170,14 @@ public function testRemove($key, $value)
         $this->session->set('hi.world', 'have a nice day');
         $this->session->set($key, $value);
         $this->session->remove($key);
-        $this->assertEquals(array('hi.world' => 'have a nice day'), $this->session->all());
+        $this->assertEquals(['hi.world' => 'have a nice day'], $this->session->all());
     }
 
     public function testInvalidate()
     {
         $this->session->set('invalidate', 123);
         $this->session->invalidate();
-        $this->assertEquals(array(), $this->session->all());
+        $this->assertEquals([], $this->session->all());
     }
 
     public function testMigrate()
@@ -216,7 +216,7 @@ public function testGetFlashBag()
 
     public function testGetIterator()
     {
-        $attributes = array('hello' => 'world', 'symfony' => 'rocks');
+        $attributes = ['hello' => 'world', 'symfony' => 'rocks'];
         foreach ($attributes as $key => $val) {
             $this->session->set($key, $val);
         }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractSessionHandlerTest.php
index 3ac081e3884c..98bc67bcabb4 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractSessionHandlerTest.php
@@ -22,10 +22,10 @@ class AbstractSessionHandlerTest extends TestCase
 
     public static function setUpBeforeClass()
     {
-        $spec = array(
-            1 => array('file', '/dev/null', 'w'),
-            2 => array('file', '/dev/null', 'w'),
-        );
+        $spec = [
+            1 => ['file', '/dev/null', 'w'],
+            2 => ['file', '/dev/null', 'w'],
+        ];
         if (!self::$server = @proc_open('exec php -S localhost:8053', $spec, $pipes, __DIR__.'/Fixtures')) {
             self::markTestSkipped('PHP server unable to start.');
         }
@@ -45,7 +45,7 @@ public static function tearDownAfterClass()
      */
     public function testSession($fixture)
     {
-        $context = array('http' => array('header' => "Cookie: sid=123abc\r\n"));
+        $context = ['http' => ['header' => "Cookie: sid=123abc\r\n"]];
         $context = stream_context_create($context);
         $result = file_get_contents(sprintf('http://localhost:8053/%s.php', $fixture), false, $context);
 
@@ -55,7 +55,7 @@ public function testSession($fixture)
     public function provideSession()
     {
         foreach (glob(__DIR__.'/Fixtures/*.php') as $file) {
-            yield array(pathinfo($file, PATHINFO_FILENAME));
+            yield [pathinfo($file, PATHINFO_FILENAME)];
         }
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php
index d3d31762ae51..68daa4e5cb59 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php
@@ -41,7 +41,7 @@ protected function setUp()
         $this->memcache = $this->getMockBuilder('Memcache')->getMock();
         $this->storage = new MemcacheSessionHandler(
             $this->memcache,
-            array('prefix' => self::PREFIX, 'expiretime' => self::TTL)
+            ['prefix' => self::PREFIX, 'expiretime' => self::TTL]
         );
     }
 
@@ -117,12 +117,12 @@ public function testSupportedOptions($options, $supported)
 
     public function getOptionFixtures()
     {
-        return array(
-            array(array('prefix' => 'session'), true),
-            array(array('expiretime' => 100), true),
-            array(array('prefix' => 'session', 'expiretime' => 200), true),
-            array(array('expiretime' => 100, 'foo' => 'bar'), false),
-        );
+        return [
+            [['prefix' => 'session'], true],
+            [['expiretime' => 100], true],
+            [['prefix' => 'session', 'expiretime' => 200], true],
+            [['expiretime' => 100, 'foo' => 'bar'], false],
+        ];
     }
 
     public function testGetConnection()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
index 2a114801056c..70bc3d14655b 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
@@ -45,7 +45,7 @@ protected function setUp()
         $this->memcached = $this->getMockBuilder('Memcached')->getMock();
         $this->storage = new MemcachedSessionHandler(
             $this->memcached,
-            array('prefix' => self::PREFIX, 'expiretime' => self::TTL)
+            ['prefix' => self::PREFIX, 'expiretime' => self::TTL]
         );
     }
 
@@ -121,12 +121,12 @@ public function testSupportedOptions($options, $supported)
 
     public function getOptionFixtures()
     {
-        return array(
-            array(array('prefix' => 'session'), true),
-            array(array('expiretime' => 100), true),
-            array(array('prefix' => 'session', 'expiretime' => 200), true),
-            array(array('expiretime' => 100, 'foo' => 'bar'), false),
-        );
+        return [
+            [['prefix' => 'session'], true],
+            [['expiretime' => 100], true],
+            [['prefix' => 'session', 'expiretime' => 200], true],
+            [['expiretime' => 100, 'foo' => 'bar'], false],
+        ];
     }
 
     public function testGetConnection()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
index 186fc0a2d056..6f2742ca70e5 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
@@ -50,14 +50,14 @@ protected function setUp()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $this->options = array(
+        $this->options = [
             'id_field' => '_id',
             'data_field' => 'data',
             'time_field' => 'time',
             'expiry_field' => 'expires_at',
             'database' => 'sf2-test',
             'collection' => 'session-test',
-        );
+        ];
 
         $this->storage = new MongoDbSessionHandler($this->mongo, $this->options);
     }
@@ -75,7 +75,7 @@ public function testConstructorShouldThrowExceptionForInvalidMongo()
      */
     public function testConstructorShouldThrowExceptionForMissingOptions()
     {
-        new MongoDbSessionHandler($this->mongo, array());
+        new MongoDbSessionHandler($this->mongo, []);
     }
 
     public function testOpenMethodAlwaysReturnTrue()
@@ -118,9 +118,9 @@ public function testRead()
                     $this->assertGreaterThanOrEqual($criteria[$this->options['expiry_field']]['$gte']->sec, $testTimeout);
                 }
 
-                $fields = array(
+                $fields = [
                     $this->options['id_field'] => 'foo',
-                );
+                ];
 
                 if (phpversion('mongodb')) {
                     $fields[$this->options['data_field']] = new \MongoDB\BSON\Binary('bar', \MongoDB\BSON\Binary::TYPE_OLD_BINARY);
@@ -145,19 +145,19 @@ public function testWrite()
             ->with($this->options['database'], $this->options['collection'])
             ->will($this->returnValue($collection));
 
-        $data = array();
+        $data = [];
 
         $methodName = phpversion('mongodb') ? 'updateOne' : 'update';
 
         $collection->expects($this->once())
             ->method($methodName)
             ->will($this->returnCallback(function ($criteria, $updateData, $options) use (&$data) {
-                $this->assertEquals(array($this->options['id_field'] => 'foo'), $criteria);
+                $this->assertEquals([$this->options['id_field'] => 'foo'], $criteria);
 
                 if (phpversion('mongodb')) {
-                    $this->assertEquals(array('upsert' => true), $options);
+                    $this->assertEquals(['upsert' => true], $options);
                 } else {
-                    $this->assertEquals(array('upsert' => true, 'multiple' => false), $options);
+                    $this->assertEquals(['upsert' => true, 'multiple' => false], $options);
                 }
 
                 $data = $updateData['$set'];
@@ -181,14 +181,14 @@ public function testWrite()
 
     public function testWriteWhenUsingExpiresField()
     {

10000
-        $this->options = array(
+        $this->options = [
             'id_field' => '_id',
             'data_field' => 'data',
             'time_field' => 'time',
             'database' => 'sf2-test',
             'collection' => 'session-test',
             'expiry_field' => 'expiresAt',
-        );
+        ];
 
         $this->storage = new MongoDbSessionHandler($this->mongo, $this->options);
 
@@ -199,19 +199,19 @@ public function testWriteWhenUsingExpiresField()
             ->with($this->options['database'], $this->options['collection'])
             ->will($this->returnValue($collection));
 
-        $data = array();
+        $data = [];
 
         $methodName = phpversion('mongodb') ? 'updateOne' : 'update';
 
         $collection->expects($this->once())
             ->method($methodName)
             ->will($this->returnCallback(function ($criteria, $updateData, $options) use (&$data) {
-                $this->assertEquals(array($this->options['id_field'] => 'foo'), $criteria);
+                $this->assertEquals([$this->options['id_field'] => 'foo'], $criteria);
 
                 if (phpversion('mongodb')) {
-                    $this->assertEquals(array('upsert' => true), $options);
+                    $this->assertEquals(['upsert' => true], $options);
                 } else {
-                    $this->assertEquals(array('upsert' => true, 'multiple' => false), $options);
+                    $this->assertEquals(['upsert' => true, 'multiple' => false], $options);
                 }
 
                 $data = $updateData['$set'];
@@ -239,7 +239,7 @@ public function testReplaceSessionData()
             ->with($this->options['database'], $this->options['collection'])
             ->will($this->returnValue($collection));
 
-        $data = array();
+        $data = [];
 
         $methodName = phpversion('mongodb') ? 'updateOne' : 'update';
 
@@ -272,7 +272,7 @@ public function testDestroy()
 
         $collection->expects($this->once())
             ->method($methodName)
-            ->with(array($this->options['id_field'] => 'foo'));
+            ->with([$this->options['id_field'] => 'foo']);
 
         $this->assertTrue($this->storage->destroy('foo'));
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeFileSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeFileSessionHandlerTest.php
index a6264e51d2a7..dc827d8ab03c 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeFileSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeFileSessionHandlerTest.php
@@ -27,7 +27,7 @@ class NativeFileSessionHandlerTest extends TestCase
 {
     public function testConstruct()
     {
-        $storage = new NativeSessionStorage(array('name' => 'TESTING'), new NativeFileSessionHandler(sys_get_temp_dir()));
+        $storage = new NativeSessionStorage(['name' => 'TESTING'], new NativeFileSessionHandler(sys_get_temp_dir()));
 
         $this->assertEquals('files', $storage->getSaveHandler()->getSaveHandlerName());
         $this->assertEquals('user', ini_get('session.save_handler'));
@@ -52,11 +52,11 @@ public function savePathDataProvider()
     {
         $base = sys_get_temp_dir();
 
-        return array(
-            array("$base/foo", "$base/foo", "$base/foo"),
-            array("5;$base/foo", "5;$base/foo", "$base/foo"),
-            array("5;0600;$base/foo", "5;0600;$base/foo", "$base/foo"),
-        );
+        return [
+            ["$base/foo", "$base/foo", "$base/foo"],
+            ["5;$base/foo", "5;$base/foo", "$base/foo"],
+            ["5;0600;$base/foo", "5;0600;$base/foo", "$base/foo"],
+        ];
     }
 
     /**
@@ -70,7 +70,7 @@ public function testConstructException()
     public function testConstructDefault()
     {
         $path = ini_get('session.save_path');
-        $storage = new NativeSessionStorage(array('name' => 'TESTING'), new NativeFileSessionHandler());
+        $storage = new NativeSessionStorage(['name' => 'TESTING'], new NativeFileSessionHandler());
 
         $this->assertEquals($path, ini_get('session.save_path'));
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NullSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NullSessionHandlerTest.php
index 9a2212b8b400..0d246e1aa560 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NullSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NullSessionHandlerTest.php
@@ -54,6 +54,6 @@ public function testNothingIsPersisted()
 
     public function getStorage()
     {
-        return new NativeSessionStorage(array(), new NullSessionHandler());
+        return new NativeSessionStorage([], new NullSessionHandler());
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php
index 853e96d2819b..901078478b4d 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php
@@ -64,7 +64,7 @@ public function testWrongPdoErrMode()
      */
     public function testInexistentTable()
     {
-        $storage = new PdoSessionHandler($this->getMemorySqlitePdo(), array('db_table' => 'inexistent_table'));
+        $storage = new PdoSessionHandler($this->getMemorySqlitePdo(), ['db_table' => 'inexistent_table']);
         $storage->open('', 'sid');
         $storage->read('id');
         $storage->write('id', 'data');
@@ -147,7 +147,7 @@ public function testReadConvertsStreamToString()
         $stream = $this->createStream($content);
 
         $pdo->prepareResult->expects($this->once())->method('fetchAll')
-            ->will($this->returnValue(array(array($stream, 42, time()))));
+            ->will($this->returnValue([[$stream, 42, time()]]));
 
         $storage = new PdoSessionHandler($pdo);
         $result = $storage->read('foo');
@@ -178,7 +178,7 @@ public function testReadLockedConvertsStreamToString()
 
         $selectStmt->expects($this->atLeast(2))->method('fetchAll')
             ->will($this->returnCallback(function () use (&$exception, $stream) {
-                return $exception ? array(array($stream, 42, time())) : array();
+                return $exception ? [[$stream, 42, time()]] : [];
             }));
 
         $insertStmt->expects($this->once())->method('execute')
@@ -344,19 +344,19 @@ public function testUrlDsn($url, $expectedDsn, $expectedUser = null, $expectedPa
 
     public function provideUrlDsnPairs()
     {
-        yield array('mysql://localhost/test', 'mysql:host=localhost;dbname=test;');
-        yield array('mysql://localhost:56/test', 'mysql:host=localhost;port=56;dbname=test;');
-        yield array('mysql2://root:pwd@localhost/test', 'mysql:host=localhost;dbname=test;', 'root', 'pwd');
-        yield array('postgres://localhost/test', 'pgsql:host=localhost;dbname=test;');
-        yield array('postgresql://localhost:5634/test', 'pgsql:host=localhost;port=5634;dbname=test;');
-        yield array('postgres://root:pwd@localhost/test', 'pgsql:host=localhost;dbname=test;', 'root', 'pwd');
-        yield 'sqlite relative path' => array('sqlite://localhost/tmp/test', 'sqlite:tmp/test');
-        yield 'sqlite absolute path' => array('sqlite://localhost//tmp/test', 'sqlite:/tmp/test');
-        yield 'sqlite relative path without host' => array('sqlite:///tmp/test', 'sqlite:tmp/test');
-        yield 'sqlite absolute path without host' => array('sqlite3:////tmp/test', 'sqlite:/tmp/test');
-        yield array('sqlite://localhost/:memory:', 'sqlite::memory:');
-        yield array('mssql://localhost/test', 'sqlsrv:server=localhost;Database=test');
-        yield array('mssql://localhost:56/test', 'sqlsrv:server=localhost,56;Database=test');
+        yield ['mysql://localhost/test', 'mysql:host=localhost;dbname=test;'];
+        yield ['mysql://localhost:56/test', 'mysql:host=localhost;port=56;dbname=test;'];
+        yield ['mysql2://root:pwd@localhost/test', 'mysql:host=localhost;dbname=test;', 'root', 'pwd'];
+        yield ['postgres://localhost/test', 'pgsql:host=localhost;dbname=test;'];
+        yield ['postgresql://localhost:5634/test', 'pgsql:host=localhost;port=5634;dbname=test;'];
+        yield ['postgres://root:pwd@localhost/test', 'pgsql:host=localhost;dbname=test;', 'root', 'pwd'];
+        yield 'sqlite relative path' => ['sqlite://localhost/tmp/test', 'sqlite:tmp/test'];
+        yield 'sqlite absolute path' => ['sqlite://localhost//tmp/test', 'sqlite:/tmp/test'];
+        yield 'sqlite relative path without host' => ['sqlite:///tmp/test', 'sqlite:tmp/test'];
+        yield 'sqlite absolute path without host' => ['sqlite3:////tmp/test', 'sqlite:/tmp/test'];
+        yield ['sqlite://localhost/:memory:', 'sqlite::memory:'];
+        yield ['mssql://localhost/test', 'sqlsrv:server=localhost;Database=test'];
+        yield ['mssql://localhost:56/test', 'sqlsrv:server=localhost,56;Database=test'];
     }
 
     private function createStream($content)
@@ -394,7 +394,7 @@ public function getAttribute($attribute)
         return parent::getAttribute($attribute);
     }
 
-    public function prepare($statement, $driverOptions = array())
+    public function prepare($statement, $driverOptions = [])
     {
         return \is_callable($this->prepareResult)
             ? \call_user_func($this->prepareResult, $statement, $driverOptions)
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php
index b02c41ae8986..6a0d16876e8e 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php
@@ -84,7 +84,7 @@ public function testReadWithValidateIdMismatch()
     {
         $handler = $this->getMockBuilder('SessionHandlerInterface')->getMock();
         $handler->expects($this->exactly(2))->method('read')
-            ->withConsecutive(array('id1'), array('id2'))
+            ->withConsecutive(['id1'], ['id2'])
             ->will($this->onConsecutiveCalls('data1', 'data2'));
         $proxy = new StrictSessionHandler($handler);
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MetadataBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MetadataBagTest.php
index 69cf6163c16f..2c4758b9137c 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MetadataBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MetadataBagTest.php
@@ -26,26 +26,26 @@ class MetadataBagTest extends TestCase
      */
     protected $bag;
 
-    protected $array = array();
+    protected $array = [];
 
     protected function setUp()
     {
         parent::setUp();
         $this->bag = new MetadataBag();
-        $this->array = array(MetadataBag::CREATED => 1234567, MetadataBag::UPDATED => 12345678, MetadataBag::LIFETIME => 0);
+        $this->array = [MetadataBag::CREATED => 1234567, MetadataBag::UPDATED => 12345678, MetadataBag::LIFETIME => 0];
         $this->bag->initialize($this->array);
     }
 
     protected function tearDown()
     {
-        $this->array = array();
+        $this->array = [];
         $this->bag = null;
         parent::tearDown();
     }
 
     public function testInitialize()
     {
-        $sessionMetadata = array();
+        $sessionMetadata = [];
 
         $bag1 = new MetadataBag();
         $bag1->initialize($sessionMetadata);
@@ -82,7 +82,7 @@ public function testGetStorageKey()
     public function testGetLifetime()
     {
         $bag = new MetadataBag();
-        $array = array(MetadataBag::CREATED => 1234567, MetadataBag::UPDATED => 12345678, MetadataBag::LIFETIME => 1000);
+        $array = [MetadataBag::CREATED => 1234567, MetadataBag::UPDATED => 12345678, MetadataBag::LIFETIME => 1000];
         $bag->initialize($array);
         $this->assertEquals(1000, $bag->getLifetime());
     }
@@ -111,11 +111,11 @@ public function testSkipLastUsedUpdate()
         $timeStamp = time();
 
         $created = $timeStamp - 15;
-        $sessionMetadata = array(
+        $sessionMetadata = [
             MetadataBag::CREATED => $created,
             MetadataBag::UPDATED => $created,
             MetadataBag::LIFETIME => 1000,
-        );
+        ];
         $bag->initialize($sessionMetadata);
 
         $this->assertEquals($created, $sessionMetadata[MetadataBag::UPDATED]);
@@ -127,11 +127,11 @@ public function testDoesNotSkipLastUsedUpdate()
         $timeStamp = time();
 
         $created = $timeStamp - 45;
-        $sessionMetadata = array(
+        $sessionMetadata = [
             MetadataBag::CREATED => $created,
             MetadataBag::UPDATED => $created,
             MetadataBag::LIFETIME => 1000,
-        );
+        ];
         $bag->initialize($sessionMetadata);
 
         $this->assertEquals($timeStamp, $sessionMetadata[MetadataBag::UPDATED]);
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockArraySessionStorageTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockArraySessionStorageTest.php
index 893e120ce166..2e3024ef1b16 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockArraySessionStorageTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockArraySessionStorageTest.php
@@ -45,10 +45,10 @@ protected function setUp()
         $this->attributes = new AttributeBag();
         $this->flashes = new FlashBag();
 
-        $this->data = array(
-            $this->attributes->getStorageKey() => array('foo' => 'bar'),
-            $this->flashes->getStorageKey() => array('notice' => 'hello'),
-        );
+        $this->data = [
+            $this->attributes->getStorageKey() => ['foo' => 'bar'],
+            $this->flashes->getStorageKey() => ['notice' => 'hello'],
+        ];
 
         $this->storage = new MockArraySessionStorage();
         $this->storage->registerBag($this->flashes);
@@ -80,14 +80,14 @@ public function testRegenerate()
         $id = $this->storage->getId();
         $this->storage->regenerate();
         $this->assertNotEquals($id, $this->storage->getId());
-        $this->assertEquals(array('foo' => 'bar'), $this->storage->getBag('attributes')->all());
-        $this->assertEquals(array('notice' => 'hello'), $this->storage->getBag('flashes')->peekAll());
+        $this->assertEquals(['foo' => 'bar'], $this->storage->getBag('attributes')->all());
+        $this->assertEquals(['notice' => 'hello'], $this->storage->getBag('flashes')->peekAll());
 
         $id = $this->storage->getId();
         $this->storage->regenerate(true);
         $this->assertNotEquals($id, $this->storage->getId());
-        $this->assertEquals(array('foo' => 'bar'), $this->storage->getBag('attributes')->all());
-        $this->assertEquals(array('notice' => 'hello'), $this->storage->getBag('flashes')->peekAll());
+        $this->assertEquals(['foo' => 'bar'], $this->storage->getBag('attributes')->all());
+        $this->assertEquals(['notice' => 'hello'], $this->storage->getBag('flashes')->peekAll());
     }
 
     public function testGetId()
@@ -101,8 +101,8 @@ public function testClearClearsBags()
     {
         $this->storage->clear();
 
-        $this->assertSame(array(), $this->storage->getBag('attributes')->all());
-        $this->assertSame(array(), $this->storage->getBag('flashes')->peekAll());
+        $this->assertSame([], $this->storage->getBag('attributes')->all());
+        $this->assertSame([], $this->storage->getBag('flashes')->peekAll());
     }
 
     public function testClearStartsSession()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockFileSessionStorageTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockFileSessionStorageTest.php
index 16957981750e..9e2692dc0ba1 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockFileSessionStorageTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockFileSessionStorageTest.php
@@ -91,7 +91,7 @@ public function testSave()
         $storage->start();
         $this->assertEquals('108', $storage->getBag('attributes')->get('new'));
         $this->assertTrue($storage->getBag('flashes')->has('newkey'));
-        $this->assertEquals(array('test'), $storage->getBag('flashes')->peek('newkey'));
+        $this->assertEquals(['test'], $storage->getBag('flashes')->peek('newkey'));
     }
 
     public function testMultipleInstances()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
index 52da2947cbcb..d4aa476a4c66 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
@@ -56,7 +56,7 @@ protected function tearDown()
     /**
      * @return NativeSessionStorage
      */
-    protected function getStorage(array $options = array())
+    protected function getStorage(array $options = [])
     {
         $storage = new NativeSessionStorage($options);
         $storage->registerBag(new AttributeBag());
@@ -157,23 +157,23 @@ public function testExplicitSessionCacheLimiter()
     {
         $this->iniSet('session.cache_limiter', 'nocache');
 
-        $storage = new NativeSessionStorage(array('cache_limiter' => 'public'));
+        $storage = new NativeSessionStorage(['cache_limiter' => 'public']);
         $this->assertEquals('public', ini_get('session.cache_limiter'));
     }
 
     public function testCookieOptions()
     {
-        $options = array(
+        $options = [
             'cookie_lifetime' => 123456,
             'cookie_path' => '/my/cookie/path',
             'cookie_domain' => 'symfony.example.com',
             'cookie_secure' => true,
             'cookie_httponly' => false,
-        );
+        ];
 
         $this->getStorage($options);
         $temp = session_get_cookie_params();
-        $gco = array();
+        $gco = [];
 
         foreach ($temp as $key => $value) {
             $gco['cookie_'.$key] = $value;
@@ -188,10 +188,10 @@ public function testSessionOptions()
             $this->markTestSkipped('HHVM is not handled in this test case.');
         }
 
-        $options = array(
+        $options = [
             'url_rewriter.tags' => 'a=href',
             'cache_expire' => '200',
-        );
+        ];
 
         $this->getStorage($options);
 
@@ -272,9 +272,9 @@ public function testCanCreateNativeSessionStorageWhenSessionAlreadyStarted()
     public function testSetSessionOptionsOnceSessionStartedIsIgnored()
     {
         session_start();
-        $this->getStorage(array(
+        $this->getStorage([
             'name' => 'something-else',
-        ));
+        ]);
 
         // Assert no exception has been thrown by `getStorage()`
         $this->addToAssertionCount(1);
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/PhpBridgeSessionStorageTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/PhpBridgeSessionStorageTest.php
index 7cb63c5aacef..752be618bc1e 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/PhpBridgeSessionStorageTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/PhpBridgeSessionStorageTest.php
@@ -87,10 +87,10 @@ public function testClear()
         $_SESSION['drak'] = 'loves symfony';
         $storage->getBag('attributes')->set('symfony', 'greatness');
         $key = $storage->getBag('attributes')->getStorageKey();
-        $this->assertEquals($_SESSION[$key], array('symfony' => 'greatness'));
+        $this->assertEquals($_SESSION[$key], ['symfony' => 'greatness']);
         $this->assertEquals($_SESSION['drak'], 'loves symfony');
         $storage->clear();
-        $this->assertEquals($_SESSION[$key], array());
+        $this->assertEquals($_SESSION[$key], []);
         $this->assertEquals($_SESSION['drak'], 'loves symfony');
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Proxy/SessionHandlerProxyTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Proxy/SessionHandlerProxyTest.php
index 0b48250e0101..0459a8ce97d5 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Proxy/SessionHandlerProxyTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Proxy/SessionHandlerProxyTest.php
@@ -127,7 +127,7 @@ public function testGc()
      */
     public function testValidateId()
     {
-        $mock = $this->getMockBuilder(array('SessionHandlerInterface', 'SessionUpdateTimestampHandlerInterface'))->getMock();
+        $mock = $this->getMockBuilder(['SessionHandlerInterface', 'SessionUpdateTimestampHandlerInterface'])->getMock();
         $mock->expects($this->once())
             ->method('validateId');
 
@@ -142,7 +142,7 @@ public function testValidateId()
      */
     public function testUpdateTimestamp()
     {
-        $mock = $this->getMockBuilder(array('SessionHandlerInterface', 'SessionUpdateTimestampHandlerInterface'))->getMock();
+        $mock = $this->getMockBuilder(['SessionHandlerInterface', 'SessionUpdateTimestampHandlerInterface'])->getMock();
         $mock->expects($this->once())
             ->method('updateTimestamp');
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/StreamedResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/StreamedResponseTest.php
index 699222e37916..62dfc9bc94a7 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/StreamedResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/StreamedResponseTest.php
@@ -19,7 +19,7 @@ class StreamedResponseTest extends TestCase
 {
     public function testConstructor()
     {
-        $response = new StreamedResponse(function () { echo 'foo'; }, 404, array('Content-Type' => 'text/plain'));
+        $response = new StreamedResponse(function () { echo 'foo'; }, 404, ['Content-Type' => 'text/plain']);
 
         $this->assertEquals(404, $response->getStatusCode());
         $this->assertEquals('text/plain', $response->headers->get('Content-Type'));
@@ -51,7 +51,7 @@ public function testPrepareWith10Protocol()
 
     public function testPrepareWithHeadRequest()
     {
-        $response = new StreamedResponse(function () { echo 'foo'; }, 200, array('Content-Length' => '123'));
+        $response = new StreamedResponse(function () { echo 'foo'; }, 200, ['Content-Length' => '123']);
         $request = Request::create('/', 'HEAD');
 
         $response->prepare($request);
@@ -61,7 +61,7 @@ public function testPrepareWithHeadRequest()
 
     public function testPrepareWithCacheHeaders()
     {
-        $response = new StreamedResponse(function () { echo 'foo'; }, 200, array('Cache-Control' => 'max-age=600, public'));
+        $response = new StreamedResponse(function () { echo 'foo'; }, 200, ['Cache-Control' => 'max-age=600, public']);
         $request = Request::create('/', 'GET');
 
         $response->prepare($request);
diff --git a/src/Symfony/Component/HttpKernel/Bundle/Bundle.php b/src/Symfony/Component/HttpKernel/Bundle/Bundle.php
index f42895a733e8..62b86ca7fd1e 100644
--- a/src/Symfony/Component/HttpKernel/Bundle/Bundle.php
+++ b/src/Symfony/Component/HttpKernel/Bundle/Bundle.php
@@ -166,7 +166,7 @@ public function registerCommands(Application $application)
             }
             $class = $ns.'\\'.$file->getBasename('.php');
             if ($this->container) {
-                $commandIds = $this->container->hasParameter('console.command.ids') ? $this->container->getParameter('console.command.ids') : array();
+                $commandIds = $this->container->hasParameter('console.command.ids') ? $this->container->getParameter('console.command.ids') : [];
                 $alias = 'console.command.'.strtolower(str_replace('\\', '_', $class));
                 if (isset($commandIds[$alias]) || $this->container->has($alias)) {
                     continue;
diff --git a/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php b/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
index 8ee4275b1686..f82ada5c4b24 100644
--- a/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
+++ b/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
@@ -27,7 +27,7 @@ class ChainCacheClearer implements CacheClearerInterface
      *
      * @param array $clearers The initial clearers
      */
-    public function __construct($clearers = array())
+    public function __construct($clearers = [])
     {
         $this->clearers = $clearers;
     }
diff --git a/src/Symfony/Component/HttpKernel/CacheClearer/Psr6CacheClearer.php b/src/Symfony/Component/HttpKernel/CacheClearer/Psr6CacheClearer.php
index d413d2c9d641..42add5a686f9 100644
--- a/src/Symfony/Component/HttpKernel/CacheClearer/Psr6CacheClearer.php
+++ b/src/Symfony/Component/HttpKernel/CacheClearer/Psr6CacheClearer.php
@@ -18,9 +18,9 @@
  */
 class Psr6CacheClearer implements CacheClearerInterface
 {
-    private $pools = array();
+    private $pools = [];
 
-    public function __construct(array $pools = array())
+    public function __construct(array $pools = [])
     {
         $this->pools = $pools;
     }
diff --git a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
index ca3911ed5f9d..eca4e6aede71 100644
--- a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
+++ b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
@@ -20,11 +20,11 @@
  */
 class CacheWarmerAggregate implements CacheWarmerInterface
 {
-    protected $warmers = array();
+    protected $warmers = [];
     protected $optionalsEnabled = false;
     private $triggerDeprecation = false;
 
-    public function __construct($warmers = array())
+    public function __construct($warmers = [])
     {
         foreach ($warmers as $warmer) {
             $this->add($warmer);
@@ -70,7 +70,7 @@ public function setWarmers(array $warmers)
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
 
-        $this->warmers = array();
+        $this->warmers = [];
         foreach ($warmers as $warmer) {
             $this->add($warmer);
         }
diff --git a/src/Symfony/Component/HttpKernel/Client.php b/src/Symfony/Component/HttpKernel/Client.php
index 324710bb8ac0..958c4c81f953 100644
--- a/src/Symfony/Component/HttpKernel/Client.php
+++ b/src/Symfony/Component/HttpKernel/Client.php
@@ -39,7 +39,7 @@ class Client extends BaseClient
      * @param History             $history   A History instance to store the browser history
      * @param CookieJar           $cookieJar A CookieJar instance to store the cookies
      */
-    public function __construct(HttpKernelInterface $kernel, array $server = array(), History $history = null, CookieJar $cookieJar = null)
+    public function __construct(HttpKernelInterface $kernel, array $server = [], History $history = null, CookieJar $cookieJar = null)
     {
         // These class properties must be set before calling the parent constructor, as it may depend on it.
         $this->kernel = $kernel;
@@ -159,7 +159,7 @@ protected function filterRequest(DomRequest $request)
      */
     protected function filterFiles(array $files)
     {
-        $filtered = array();
+        $filtered = [];
         foreach ($files as $key => $value) {
             if (\is_array($value)) {
                 $filtered[$key] = $this->filterFiles($value);
diff --git a/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php b/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
index f8d2a72b2a9b..a5be98ee81b8 100644
--- a/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
+++ b/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
@@ -54,7 +54,7 @@ public function __toString()
      */
     public function getResource()
     {
-        return array('prefix' => $this->prefix, 'variables' => $this->variables);
+        return ['prefix' => $this->prefix, 'variables' => $this->variables];
     }
 
     /**
@@ -67,13 +67,13 @@ public function isFresh($timestamp)
 
     public function serialize()
     {
-        return serialize(array('prefix' => $this->prefix, 'variables' => $this->variables));
+        return serialize(['prefix' => $this->prefix, 'variables' => $this->variables]);
     }
 
     public function unserialize($serialized)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            $unserialized = unserialize($serialized, array('allowed_classes' => false));
+            $unserialized = unserialize($serialized, ['allowed_classes' => false]);
         } else {
             $unserialized = unserialize($serialized);
         }
@@ -84,7 +84,7 @@ public function unserialize($serialized)
 
     private function findVariables()
     {
-        $variables = array();
+        $variables = [];
 
         foreach ($_SERVER as $key => $value) {
             if (0 === strpos($key, $this->prefix)) {
diff --git a/src/Symfony/Component/HttpKernel/Config/FileLocator.php b/src/Symfony/Component/HttpKernel/Config/FileLocator.php
index c047ba3dac38..fd5c8a32c1ed 100644
--- a/src/Symfony/Component/HttpKernel/Config/FileLocator.php
+++ b/src/Symfony/Component/HttpKernel/Config/FileLocator.php
@@ -29,7 +29,7 @@ class FileLocator extends BaseFileLocator
      * @param string|null     $path   The path the global resource directory
      * @param array           $paths  An array of paths where to look for resources
      */
-    public function __construct(KernelInterface $kernel, $path = null, array $paths = array())
+    public function __construct(KernelInterface $kernel, $path = null, array $paths = [])
     {
         $this->kernel = $kernel;
         if (null !== $path) {
diff --git a/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php b/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php
index fc316920c7e0..fc6f969a9eae 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php
@@ -34,7 +34,7 @@ final class ArgumentResolver implements ArgumentResolverInterface
      */
     private $argumentValueResolvers;
 
-    public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFactory = null, $argumentValueResolvers = array())
+    public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFactory = null, $argumentValueResolvers = [])
     {
         $this->argumentMetadataFactory = $argumentMetadataFactory ?: new ArgumentMetadataFactory();
         $this->argumentValueResolvers = $argumentValueResolvers ?: self::getDefaultArgumentValueResolvers();
@@ -45,7 +45,7 @@ public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFa
      */
     public function getArguments(Request $request, $controller)
     {
-        $arguments = array();
+        $arguments = [];
 
         foreach ($this->argumentMetadataFactory->createArgumentMetadata($controller) as $metadata) {
             foreach ($this->argumentValueResolvers as $resolver) {
@@ -83,12 +83,12 @@ public function getArguments(Request $request, $controller)
 
     public static function getDefaultArgumentValueResolvers()
     {
-        return array(
+        return [
             new RequestAttributeValueResolver(),
             new RequestValueResolver(),
             new SessionValueResolver(),
             new DefaultValueResolver(),
             new VariadicValueResolver(),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Controller/ContainerControllerResolver.php b/src/Symfony/Component/HttpKernel/Controller/ContainerControllerResolver.php
index bc53e94bef3b..b08877da936b 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ContainerControllerResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ContainerControllerResolver.php
@@ -77,7 +77,7 @@ protected function createController($controller)
 
         $service = $this->container->get($controller);
         if (null !== $method) {
-            return array($service, $method);
+            return [$service, $method];
         }
 
         if (!method_exists($service, '__invoke')) {
diff --git a/src/Symfony/Component/HttpKernel/Controller/ControllerReference.php b/src/Symfony/Component/HttpKernel/Controller/ControllerReference.php
index fae4e7fa449b..e1e9c813ea96 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ControllerReference.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ControllerReference.php
@@ -27,15 +27,15 @@
 class ControllerReference
 {
     public $controller;
-    public $attributes = array();
-    public $query = array();
+    public $attributes = [];
+    public $query = [];
 
     /**
      * @param string $controller The controller name
      * @param array  $attributes An array of parameters to add to the Request attributes
      * @param array  $query      An array of parameters to add to the Request query string
      */
-    public function __construct($controller, array $attributes = array(), array $query = array())
+    public function __construct($controller, array $attributes = [], array $query = [])
     {
         $this->controller = $controller;
         $this->attributes = $attributes;
diff --git a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
index 6d898e783144..50413ce4ed6d 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
@@ -129,7 +129,7 @@ protected function doGetArguments(Request $request, $controller, array $paramete
         @trigger_error(sprintf('The "%s()" method is deprecated as of 3.1 and will be removed in 4.0. Implement the %s and inject it in the HttpKernel instead.', __METHOD__, ArgumentResolverInterface::class), E_USER_DEPRECATED);
 
         $attributes = $request->attributes->all();
-        $arguments = array();
+        $arguments = [];
         foreach ($parameters as $param) {
             if (array_key_exists($param->name, $attributes)) {
                 if ($this->supportsVariadic && $param->isVariadic() && \is_array($attributes[$param->name])) {
@@ -180,7 +180,7 @@ protected function createController($controller)
             throw new \InvalidArgumentException(sprintf('Class "%s" does not exist.', $class));
         }
 
-        return array($this->instantiateController($class), $method);
+        return [$this->instantiateController($class), $method];
     }
 
     /**
@@ -233,7 +233,7 @@ private function getControllerError($callable)
 
         $collection = get_class_methods($controller);
 
-        $alternatives = array();
+        $alternatives = [];
 
         foreach ($collection as $item) {
             $lev = levenshtein($method, $item);
diff --git a/src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php b/src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php
index b46be7e8b709..fa48d0cc1157 100644
--- a/src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php
+++ b/src/Symfony/Component/HttpKernel/ControllerMetadata/ArgumentMetadataFactory.php
@@ -47,7 +47,7 @@ public function __construct()
      */
     public function createArgumentMetadata($controller)
     {
-        $arguments = array();
+        $arguments = [];
 
         if (\is_array($controller)) {
             $reflection = new \ReflectionMethod($controller[0], $controller[1]);
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/ConfigDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/ConfigDataCollector.php
index abfd939f5f59..626c1cc69527 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/ConfigDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/ConfigDataCollector.php
@@ -54,7 +54,7 @@ public function setKernel(KernelInterface $kernel = null)
      */
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
-        $this->data = array(
+        $this->data = [
             'app_name' => $this->name,
             'app_version' => $this->version,
             'token' => $response->headers->get('X-Debug-Token'),
@@ -70,9 +70,9 @@ public function collect(Request $request, Response $response, \Exception $except
             'xdebug_enabled' => \extension_loaded('xdebug'),
             'apcu_enabled' => \extension_loaded('apcu') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN),
             'zend_opcache_enabled' => \extension_loaded('Zend OPcache') && filter_var(ini_get('opcache.enable'), FILTER_VALIDATE_BOOLEAN),
-            'bundles' => array(),
+            'bundles' => [],
             'sapi_name' => \PHP_SAPI,
-        );
+        ];
 
         if (isset($this->kernel)) {
             foreach ($this->kernel->getBundles() as $name => $bundle) {
@@ -98,7 +98,7 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
     }
 
     public function lateCollect()
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
index 6d1a822e47a9..de19678a30d8 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
@@ -28,7 +28,7 @@
  */
 abstract class DataCollector implements DataCollectorInterface, \Serializable
 {
-    protected $data = array();
+    protected $data = [];
 
     /**
      * @var ValueExporter
@@ -111,7 +111,7 @@ protected function varToString($var)
      */
     protected function getCasters()
     {
-        return array(
+        return [
             '*' => function ($v, array $a, Stub $s, $isNested) {
                 if (!$v instanceof Stub) {
                     foreach ($a as $k => $v) {
@@ -123,6 +123,6 @@ protected function getCasters()
 
                 return $a;
             },
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
index 7e2430c4ba10..27197226dead 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
@@ -49,12 +49,12 @@ public function __construct(Stopwatch $stopwatch = null, $fileLinkFormat = null,
         $this->dumperIsInjected = null !== $dumper;
 
         // All clones share these properties by reference:
-        $this->rootRefs = array(
+        $this->rootRefs = [
             &$this->data,
             &$this->dataCount,
             &$this->isCollected,
             &$this->clonesCount,
-        );
+        ];
     }
 
     public function __clone()
@@ -103,7 +103,7 @@ public function dump(Data $data)
 
                             if ($src) {
                                 $src = explode("\n", $src);
-                                $fileExcerpt = array();
+                                $fileExcerpt = [];
 
                                 for ($i = max($line - 3, 1), $max = min($line + 3, \count($src)); $i <= $max; ++$i) {
                                     $fileExcerpt[] = '<li'.($i === $line ? ' class="selected"' : '').'><code>'.$this->htmlEncode($src[$i - 1]).'</code></li>';
@@ -153,7 +153,7 @@ public function collect(Request $request, Response $response, \Exception $except
         ) {
             if ($response->headers->has('Content-Type') && false !== strpos($response->headers->get('Content-Type'), 'html')) {
                 $this->dumper = new HtmlDumper('php://output', $this->charset);
-                $this->dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+                $this->dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
             } else {
                 $this->dumper = new CliDumper('php://output', $this->charset);
             }
@@ -169,7 +169,7 @@ public function reset()
         if ($this->stopwatch) {
             $this->stopwatch->reset();
         }
-        $this->data = array();
+        $this->data = [];
         $this->dataCount = 0;
         $this->isCollected = true;
         $this->clonesCount = 0;
@@ -185,7 +185,7 @@ public function serialize()
         $this->data[] = $this->fileLinkFormat;
         $this->data[] = $this->charset;
         $ser = serialize($this->data);
-        $this->data = array();
+        $this->data = [];
         $this->dataCount = 0;
         $this->isCollected = true;
         if (!$this->dumperIsInjected) {
@@ -215,11 +215,11 @@ public function getDumps($format, $maxDepthLimit = -1, $maxItemsPerDepth = -1)
 
         if ('html' === $format) {
             $dumper = new HtmlDumper($data, $this->charset);
-            $dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+            $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
         } else {
             throw new \InvalidArgumentException(sprintf('Invalid dump format: %s', $format));
         }
-        $dumps = array();
+        $dumps = [];
 
         foreach ($this->data as $dump) {
             $dumper->dump($dump['data']->withMaxDepth($maxDepthLimit)->withMaxItemsPerDepth($maxItemsPerDepth));
@@ -250,9 +250,9 @@ public function __destruct()
                 --$i;
             }
 
-            if (!\in_array(\PHP_SAPI, array('cli', 'phpdbg'), true) && stripos($h[$i], 'html')) {
+            if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) && stripos($h[$i], 'html')) {
                 $this->dumper = new HtmlDumper('php://output', $this->charset);
-                $this->dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+                $this->dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
             } else {
                 $this->dumper = new CliDumper('php://output', $this->charset);
             }
@@ -262,7 +262,7 @@ public function __destruct()
                 $this->doDump($dump['data'], $dump['name'], $dump['file'], $dump['line']);
             }
 
-            $this->data = array();
+            $this->data = [];
             $this->dataCount = 0;
         }
     }
@@ -276,7 +276,7 @@ private function doDump($data, $name, $file, $line)
                         $s = $this->style('meta', '%s');
                         $f = strip_tags($this->style('', $file));
                         $name = strip_tags($this->style('', $name));
-                        if ($fmt && $link = \is_string($fmt) ? strtr($fmt, array('%f' => $file, '%l' => $line)) : $fmt->format($file, $line)) {
+                        if ($fmt && $link = \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line)) {
                             $name = sprintf('<a href="%s" title="%s">'.$s.'</a>', strip_tags($this->style('', $link)), $f, $name);
                         } else {
                             $name = sprintf('<abbr title="%s">'.$s.'</abbr>', $f, $name);
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
index 81076fd72677..78e9e29198e9 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
@@ -38,15 +38,15 @@ public function __construct(EventDispatcherInterface $dispatcher = null)
      */
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
-        $this->data = array(
-            'called_listeners' => array(),
-            'not_called_listeners' => array(),
-        );
+        $this->data = [
+            'called_listeners' => [],
+            'not_called_listeners' => [],
+        ];
     }
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
 
         if ($this->dispatcher instanceof TraceableEventDispatcherInterface) {
             if (!method_exists($this->dispatcher, 'reset')) {
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/ExceptionDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/ExceptionDataCollector.php
index 7a25f149215b..c76e7f45bdf1 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/ExceptionDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/ExceptionDataCollector.php
@@ -28,9 +28,9 @@ class ExceptionDataCollector extends DataCollector
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
         if (null !== $exception) {
-            $this->data = array(
+            $this->data = [
                 'exception' => FlattenException::create($exception),
-            );
+            ];
         }
     }
 
@@ -39,7 +39,7 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
index 97b8a8620c3c..1d95b8b566a5 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
@@ -55,7 +55,7 @@ public function reset()
         if ($this->logger && method_exists($this->logger, 'clear')) {
             $this->logger->clear();
         }
-        $this->data = array();
+        $this->data = [];
     }
 
     /**
@@ -79,12 +79,12 @@ public function lateCollect()
      */
     public function getLogs()
     {
-        return isset($this->data['logs']) ? $this->data['logs'] : array();
+        return isset($this->data['logs']) ? $this->data['logs'] : [];
     }
 
     public function getPriorities()
     {
-        return isset($this->data['priorities']) ? $this->data['priorities'] : array();
+        return isset($this->data['priorities']) ? $this->data['priorities'] : [];
     }
 
     public function countErrors()
@@ -109,7 +109,7 @@ public function countScreams()
 
     public function getCompilerLogs()
     {
-        return isset($this->data['compiler_logs']) ? $this->data['compiler_logs'] : array();
+        return isset($this->data['compiler_logs']) ? $this->data['compiler_logs'] : [];
     }
 
     /**
@@ -123,13 +123,13 @@ public function getName()
     private function getContainerDeprecationLogs()
     {
         if (null === $this->containerPathPrefix || !file_exists($file = $this->containerPathPrefix.'Deprecations.log')) {
-            return array();
+            return [];
         }
 
         $bootTime = filemtime($file);
-        $logs = array();
+        $logs = [];
         foreach (unserialize(file_get_contents($file)) as $log) {
-            $log['context'] = array('exception' => new SilencedErrorContext($log['type'], $log['file'], $log['line'], $log['trace'], $log['count']));
+            $log['context'] = ['exception' => new SilencedErrorContext($log['type'], $log['file'], $log['line'], $log['trace'], $log['count'])];
             $log['timestamp'] = $bootTime;
             $log['priority'] = 100;
             $log['priorityName'] = 'DEBUG';
@@ -145,17 +145,17 @@ private function getContainerDeprecationLogs()
     private function getContainerCompilerLogs()
     {
         if (null === $this->containerPathPrefix || !file_exists($file = $this->containerPathPrefix.'Compiler.log')) {
-            return array();
+            return [];
         }
 
-        $logs = array();
+        $logs = [];
         foreach (file($file, FILE_IGNORE_NEW_LINES) as $log) {
             $log = explode(': ', $log, 2);
             if (!isset($log[1]) || !preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+(?:\\\\[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+)++$/', $log[0])) {
-                $log = array('Unknown Compiler Pass', implode(': ', $log));
+                $log = ['Unknown Compiler Pass', implode(': ', $log)];
             }
 
-            $logs[$log[0]][] = array('message' => $log[1]);
+            $logs[$log[0]][] = ['message' => $log[1]];
         }
 
         return $logs;
@@ -163,8 +163,8 @@ private function getContainerCompilerLogs()
 
     private function sanitizeLogs($logs)
     {
-        $sanitizedLogs = array();
-        $silencedLogs = array();
+        $sanitizedLogs = [];
+        $silencedLogs = [];
 
         foreach ($logs as $log) {
             if (!$this->isSilencedOrDeprecationErrorLog($log)) {
@@ -183,10 +183,10 @@ private function sanitizeLogs($logs)
                 $silencedLogs[$h] = true;
 
                 if (!isset($sanitizedLogs[$message])) {
-                    $sanitizedLogs[$message] = $log + array(
+                    $sanitizedLogs[$message] = $log + [
                         'errorCount' => 0,
                         'scream' => true,
-                    );
+                    ];
                 }
                 $sanitizedLogs[$message]['errorCount'] += $exception->count;
 
@@ -198,10 +198,10 @@ private function sanitizeLogs($logs)
             if (isset($sanitizedLogs[$errorId])) {
                 ++$sanitizedLogs[$errorId]['errorCount'];
             } else {
-                $log += array(
+                $log += [
                     'errorCount' => 1,
                     'scream' => false,
-                );
+                ];
 
                 $sanitizedLogs[$errorId] = $log;
             }
@@ -222,7 +222,7 @@ private function isSilencedOrDeprecationErrorLog(array $log)
             return true;
         }
 
-        if ($exception instanceof \ErrorException && \in_array($exception->getSeverity(), array(E_DEPRECATED, E_USER_DEPRECATED), true)) {
+        if ($exception instanceof \ErrorException && \in_array($exception->getSeverity(), [E_DEPRECATED, E_USER_DEPRECATED], true)) {
             return true;
         }
 
@@ -231,23 +231,23 @@ private function isSilencedOrDeprecationErrorLog(array $log)
 
     private function computeErrorsCount(array $containerDeprecationLogs)
     {
-        $silencedLogs = array();
-        $count = array(
+        $silencedLogs = [];
+        $count = [
             'error_count' => $this->logger->countErrors(),
             'deprecation_count' => 0,
             'warning_count' => 0,
             'scream_count' => 0,
-            'priorities' => array(),
-        );
+            'priorities' => [],
+        ];
 
         foreach ($this->logger->getLogs() as $log) {
             if (isset($count['priorities'][$log['priority']])) {
                 ++$count['priorities'][$log['priority']]['count'];
             } else {
-                $count['priorities'][$log['priority']] = array(
+                $count['priorities'][$log['priority']] = [
                     'count' => 1,
                     'name' => $log['priorityName'],
-                );
+                ];
             }
             if ('WARNING' === $log['priorityName']) {
                 ++$count['warning_count'];
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/MemoryDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/MemoryDataCollector.php
index 310b2f91a55d..7a6e1c064644 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/MemoryDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/MemoryDataCollector.php
@@ -39,10 +39,10 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function reset()
     {
-        $this->data = array(
+        $this->data = [
             'memory' => 0,
             'memory_limit' => $this->convertToBytes(ini_get('memory_limit')),
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
index 10492e446503..671865aa16b1 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
@@ -38,7 +38,7 @@ public function __construct()
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
         // attributes are serialized and as they can be anything, they need to be converted to strings.
-        $attributes = array();
+        $attributes = [];
         $route = '';
         foreach ($request->attributes->all() as $key => $value) {
             if ('_route' === $key) {
@@ -57,10 +57,10 @@ public function collect(Request $request, Response $response, \Exception $except
             $content = false;
         }
 
-        $sessionMetadata = array();
-        $sessionAttributes = array();
+        $sessionMetadata = [];
+        $sessionAttributes = [];
         $session = null;
-        $flashes = array();
+        $flashes = [];
         if ($request->hasSession()) {
             $session = $request->getSession();
             if ($session->isStarted()) {
@@ -74,12 +74,12 @@ public function collect(Request $request, Response $response, \Exception $except
 
         $statusCode = $response->getStatusCode();
 
-        $responseCookies = array();
+        $responseCookies = [];
         foreach ($response->headers->getCookies() as $cookie) {
             $responseCookies[$cookie->getName()] = $cookie;
         }
 
-        $this->data = array(
+        $this->data = [
             'method' => $request->getMethod(),
             'format' => $request->getRequestFormat(),
             'content' => $content,
@@ -101,7 +101,7 @@ public function collect(Request $request, Response $response, \Exception $except
             'path_info' => $request->getPathInfo(),
             'controller' => 'n/a',
             'locale' => $request->getLocale(),
-        );
+        ];
 
         if (isset($this->data['request_headers']['php-auth-pw'])) {
             $this->data['request_headers']['php-auth-pw'] = '******';
@@ -138,14 +138,14 @@ public function collect(Request $request, Response $response, \Exception $except
         if ($response->isRedirect()) {
             $response->headers->setCookie(new Cookie(
                 'sf_redirect',
-                json_encode(array(
+                json_encode([
                     'token' => $response->headers->get('x-debug-token'),
                     'route' => $request->attributes->get('_route', 'n/a'),
                     'method' => $request->getMethod(),
                     'controller' => $this->parseController($request->attributes->get('_controller')),
                     'status_code' => $statusCode,
                     'status_text' => Response::$statusTexts[(int) $statusCode],
-                ))
+                ])
             ));
         }
 
@@ -159,7 +159,7 @@ public function lateCollect()
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
         $this->controllers = new \SplObjectStorage();
     }
 
@@ -284,7 +284,7 @@ public function getIdentifier()
      */
     public function getRouteParams()
     {
-        return isset($this->data['request_attributes']['_route_params']) ? $this->data['request_attributes']['_route_params']->getValue() : array();
+        return isset($this->data['request_attributes']['_route_params']) ? $this->data['request_attributes']['_route_params']->getValue() : [];
     }
 
     /**
@@ -327,10 +327,10 @@ public function onKernelResponse(FilterResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             KernelEvents::CONTROLLER => 'onKernelController',
             KernelEvents::RESPONSE => 'onKernelResponse',
-        );
+        ];
     }
 
     /**
@@ -358,21 +358,21 @@ protected function parseController($controller)
             try {
                 $r = new \ReflectionMethod($controller[0], $controller[1]);
 
-                return array(
+                return [
                     'class' => \is_object($controller[0]) ? \get_class($controller[0]) : $controller[0],
                     'method' => $controller[1],
                     'file' => $r->getFileName(),
                     'line' => $r->getStartLine(),
-                );
+                ];
             } catch (\ReflectionException $e) {
                 if (\is_callable($controller)) {
                     // using __call or  __callStatic
-                    return array(
+                    return [
                         'class' => \is_object($controller[0]) ? \get_class($controller[0]) : $controller[0],
                         'method' => $controller[1],
                         'file' => 'n/a',
                         'line' => 'n/a',
-                    );
+                    ];
                 }
             }
         }
@@ -380,12 +380,12 @@ protected function parseController($controller)
         if ($controller instanceof \Closure) {
             $r = new \ReflectionFunction($controller);
 
-            $controller = array(
+            $controller = [
                 'class' => $r->getName(),
                 'method' => null,
                 'file' => $r->getFileName(),
                 'line' => $r->getStartLine(),
-            );
+            ];
 
             if (false !== strpos($r->name, '{closure}')) {
                 return $controller;
@@ -404,12 +404,12 @@ protected function parseController($controller)
         if (\is_object($controller)) {
             $r = new \ReflectionClass($controller);
 
-            return array(
+            return [
                 'class' => $r->getName(),
                 'method' => null,
                 'file' => $r->getFileName(),
                 'line' => $r->getStartLine(),
-            );
+            ];
         }
 
         return \is_string($controller) ? $controller : 'n/a';
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/RouterDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/RouterDataCollector.php
index 481747b3c839..432dc3618f8c 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/RouterDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/RouterDataCollector.php
@@ -54,11 +54,11 @@ public function reset()
     {
         $this->controllers = new \SplObjectStorage();
 
-        $this->data = array(
+        $this->data = [
             'redirect' => false,
             'url' => null,
             'route' => null,
-        );
+        ];
     }
 
     protected function guessRoute(Request $request, $controller)
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php
index e489d7759862..99149ab0be56 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php
@@ -43,11 +43,11 @@ public function collect(Request $request, Response $response, \Exception $except
             $startTime = $request->server->get('REQUEST_TIME_FLOAT');
         }
 
-        $this->data = array(
+        $this->data = [
             'token' => $response->headers->get('X-Debug-Token'),
             'start_time' => $startTime * 1000,
-            'events' => array(),
-        );
+            'events' => [],
+        ];
     }
 
     /**
@@ -55,7 +55,7 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
 
         if (null !== $this->stopwatch) {
             $this->stopwatch->reset();
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/Util/ValueExporter.php b/src/Symfony/Component/HttpKernel/DataCollector/Util/ValueExporter.php
index e30b3a502985..36570b4d5fa4 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/Util/ValueExporter.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/Util/ValueExporter.php
@@ -50,7 +50,7 @@ public function exportValue($value, $depth = 1, $deep = false)
 
             $indent = str_repeat('  ', $depth);
 
-            $a = array();
+            $a = [];
             foreach ($value as $k => $v) {
                 if (\is_array($v)) {
                     $deep = true;
diff --git a/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php b/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
index b3c2595b0d07..8a4aa62b746d 100644
--- a/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
+++ b/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
@@ -36,7 +36,7 @@ public function __construct($fileLinkFormat = null, RequestStack $requestStack =
         $fileLinkFormat = $fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format');
         if ($fileLinkFormat && !\is_array($fileLinkFormat)) {
             $i = strpos($f = $fileLinkFormat, '&', max(strrpos($f, '%f'), strrpos($f, '%l'))) ?: \strlen($f);
-            $fileLinkFormat = array(substr($f, 0, $i)) + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);
+            $fileLinkFormat = [substr($f, 0, $i)] + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);
         }
 
         $this->fileLinkFormat = $fileLinkFormat;
@@ -55,7 +55,7 @@ public function format($file, $line)
                 }
             }
 
-            return strtr($fmt[0], array('%f' => $file, '%l' => $line));
+            return strtr($fmt[0], ['%f' => $file, '%l' => $line]);
         }
 
         return false;
@@ -69,7 +69,7 @@ public function serialize()
     public function unserialize($serialized)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            $this->fileLinkFormat = unserialize($serialized, array('allowed_classes' => false));
+            $this->fileLinkFormat = unserialize($serialized, ['allowed_classes' => false]);
         } else {
             $this->fileLinkFormat = unserialize($serialized);
         }
@@ -99,10 +99,10 @@ private function getFileLinkFormat()
                     return;
                 }
 
-                return array(
+                return [
                     $request->getSchemeAndHttpHost().$request->getBasePath().$this->urlFormat,
                     $this->baseDir.\DIRECTORY_SEPARATOR, '',
-                );
+                ];
             }
         }
     }
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/AddAnnotatedClassesToCachePass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/AddAnnotatedClassesToCachePass.php
index 4e59123d19bc..8bb03bd0c78d 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/AddAnnotatedClassesToCachePass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/AddAnnotatedClassesToCachePass.php
@@ -36,8 +36,8 @@ public function __construct(Kernel $kernel)
      */
     public function process(ContainerBuilder $container)
     {
-        $classes = array();
-        $annotatedClasses = array();
+        $classes = [];
+        $annotatedClasses = [];
         foreach ($container->getExtensions() as $extension) {
             if ($extension instanceof Extension) {
                 if (\PHP_VERSION_ID < 70000) {
@@ -67,7 +67,7 @@ public function process(ContainerBuilder $container)
      */
     private function expandClasses(array $patterns, array $classes)
     {
-        $expanded = array();
+        $expanded = [];
 
         // Explicit classes declared in the patterns are returned directly
         foreach ($patterns as $key => $pattern) {
@@ -93,7 +93,7 @@ private function expandClasses(array $patterns, array $classes)
 
     private function getClassesInComposerClassMaps()
     {
-        $classes = array();
+        $classes = [];
 
         foreach (spl_autoload_functions() as $function) {
             if (!\is_array($function)) {
@@ -114,14 +114,14 @@ private function getClassesInComposerClassMaps()
 
     private function patternsToRegexps($patterns)
     {
-        $regexps = array();
+        $regexps = [];
 
         foreach ($patterns as $pattern) {
             // Escape user input
             $regex = preg_quote(ltrim($pattern, '\\'));
 
             // Wildcards * and **
-            $regex = strtr($regex,
10000
 array('\\*\\*' => '.*?', '\\*' => '[^\\\\]*?'));
+            $regex = strtr($regex, ['\\*\\*' => '.*?', '\\*' => '[^\\\\]*?']);
 
             // If this class does not end by a slash, anchor the end
             if ('\\' !== substr($regex, -1)) {
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php b/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
index a382c15d67b2..ec69392e535d 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
@@ -20,8 +20,8 @@
  */
 abstract class Extension extends BaseExtension
 {
-    private $classes = array();
-    private $annotatedClasses = array();
+    private $classes = [];
+    private $annotatedClasses = [];
 
     /**
      * Gets the classes to cache.
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/FragmentRendererPass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/FragmentRendererPass.php
index 06a39c8bc015..a15fbaa17212 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/FragmentRendererPass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/FragmentRendererPass.php
@@ -45,7 +45,7 @@ public function process(ContainerBuilder $container)
         }
 
         $definition = $container->getDefinition($this->handlerService);
-        $renderers = array();
+        $renderers = [];
         foreach ($container->findTaggedServiceIds($this->rendererTag, true) as $id => $tags) {
             $def = $container->getDefinition($id);
             $class = $container->getParameterBag()->resolveValue($def->getClass());
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php b/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
index 00b05959cf38..1722ef58b167 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
@@ -26,8 +26,8 @@ class LazyLoadingFragmentHandler extends FragmentHandler
     /**
      * @deprecated since version 3.3, to be removed in 4.0
      */
-    private $rendererIds = array();
-    private $initialized = array();
+    private $rendererIds = [];
+    private $initialized = [];
 
     /**
      * @param ContainerInterface $container    A container
@@ -38,7 +38,7 @@ public function __construct(ContainerInterface $container, RequestStack $request
     {
         $this->container = $container;
 
-        parent::__construct($requestStack, array(), $debug);
+        parent::__construct($requestStack, [], $debug);
     }
 
     /**
@@ -59,7 +59,7 @@ public function addRendererService($name, $renderer)
     /**
      * {@inheritdoc}
      */
-    public function render($uri, $renderer = 'inline', array $options = array())
+    public function render($uri, $renderer = 'inline', array $options = [])
     {
         // BC 3.x, to be removed in 4.0
         if (isset($this->rendererIds[$renderer])) {
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/MergeExtensionConfigurationPass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/MergeExtensionConfigurationPass.php
index 1dbf7f7beeed..83e1b758de75 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/MergeExtensionConfigurationPass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/MergeExtensionConfigurationPass.php
@@ -32,7 +32,7 @@ public function process(ContainerBuilder $container)
     {
         foreach ($this->extensions as $extension) {
             if (!\count($container->getExtensionConfig($extension))) {
-                $container->loadFromExtension($extension, array());
+                $container->loadFromExtension($extension, []);
             }
         }
 
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
index cb05f6fbeb4e..d021c6ee8a12 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
@@ -47,7 +47,7 @@ public function process(ContainerBuilder $container)
         }
 
         $parameterBag = $container->getParameterBag();
-        $controllers = array();
+        $controllers = [];
 
         foreach ($container->findTaggedServiceIds($this->controllerTag, true) as $id => $tags) {
             $def = $container->getDefinition($id);
@@ -70,14 +70,14 @@ public function process(ContainerBuilder $container)
             $isContainerAware = $r->implementsInterface(ContainerAwareInterface::class) || is_subclass_of($class, AbstractController::class);
 
             // get regular public methods
-            $methods = array();
-            $arguments = array();
+            $methods = [];
+            $arguments = [];
             foreach ($r->getMethods(\ReflectionMethod::IS_PUBLIC) as $r) {
                 if ('setContainer' === $r->name && $isContainerAware) {
                     continue;
                 }
                 if (!$r->isConstructor() && !$r->isDestructor() && !$r->isAbstract()) {
-                    $methods[strtolower($r->name)] = array($r, $r->getParameters());
+                    $methods[strtolower($r->name)] = [$r, $r->getParameters()];
                 }
             }
 
@@ -87,7 +87,7 @@ public function process(ContainerBuilder $container)
                     $autowire = true;
                     continue;
                 }
-                foreach (array('action', 'argument', 'id') as $k) {
+                foreach (['action', 'argument', 'id'] as $k) {
                     if (!isset($attributes[$k][0])) {
                         throw new InvalidArgumentException(sprintf('Missing "%s" attribute on tag "%s" %s for service "%s".', $k, $this->controllerTag, json_encode($attributes, JSON_UNESCAPED_UNICODE), $id));
                     }
@@ -117,7 +117,7 @@ public function process(ContainerBuilder $container)
                 /** @var \ReflectionMethod $r */
 
                 // create a per-method map of argument-names to service/type-references
-                $args = array();
+                $args = [];
                 foreach ($parameters as $p) {
                     /** @var \ReflectionParameter $p */
                     $type = $target = ProxyHelper::getTypeHint($r, $p, true);
@@ -141,7 +141,7 @@ public function process(ContainerBuilder $container)
                             continue;
                         }
 
-                        $binding->setValues(array($bindingValue, $bindingId, true));
+                        $binding->setValues([$bindingValue, $bindingId, true]);
                         $args[$p->name] = $bindingValue;
 
                         continue;
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/ResettableServicePass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/ResettableServicePass.php
index 29433a6d5b19..28136be62542 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/ResettableServicePass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/ResettableServicePass.php
@@ -39,7 +39,7 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $services = $methods = array();
+        $services = $methods = [];
 
         foreach ($container->findTaggedServiceIds($this->tagName, true) as $id => $tags) {
             $services[$id] = new Reference($id, ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE);
diff --git a/src/Symfony/Component/HttpKernel/EventListener/AbstractSessionListener.php b/src/Symfony/Component/HttpKernel/EventListener/AbstractSessionListener.php
index 41187d4125d9..aee5d6f88f50 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/AbstractSessionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/AbstractSessionListener.php
@@ -26,7 +26,7 @@
  */
 abstract class AbstractSessionListener implements EventSubscriberInterface
 {
-    private $sessionUsageStack = array();
+    private $sessionUsageStack = [];
 
     public function onKernelRequest(GetResponseEvent $event)
     {
@@ -74,12 +74,12 @@ public function onFinishRequest(FinishRequestEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array('onKernelRequest', 128),
+        return [
+            KernelEvents::REQUEST => ['onKernelRequest', 128],
             // low priority to come after regular response listeners, same as SaveSessionListener
-            KernelEvents::RESPONSE => array('onKernelResponse', -1000),
-            KernelEvents::FINISH_REQUEST => array('onFinishRequest'),
-        );
+            KernelEvents::RESPONSE => ['onKernelResponse', -1000],
+            KernelEvents::FINISH_REQUEST => ['onFinishRequest'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/EventListener/AbstractTestSessionListener.php b/src/Symfony/Component/HttpKernel/EventListener/AbstractTestSessionListener.php
index cb5da50bd086..714b315a3240 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/AbstractTestSessionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/AbstractTestSessionListener.php
@@ -85,10 +85,10 @@ public function onKernelResponse(FilterResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array('onKernelRequest', 192),
-            KernelEvents::RESPONSE => array('onKernelResponse', -128),
-        );
+        return [
+            KernelEvents::REQUEST => ['onKernelRequest', 192],
+            KernelEvents::RESPONSE => ['onKernelResponse', -128],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/EventListener/AddRequestFormatsListener.php b/src/Symfony/Component/HttpKernel/EventListener/AddRequestFormatsListener.php
index 5ec528417c98..68d806af01ec 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/AddRequestFormatsListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/AddRequestFormatsListener.php
@@ -45,6 +45,6 @@ public function onKernelRequest(GetResponseEvent $event)
      */
     public static function getSubscribedEvents()
     {
-        return array(KernelEvents::REQUEST => array('onKernelRequest', 1));
+        return [KernelEvents::REQUEST => ['onKernelRequest', 1]];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php b/src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php
index 04137c746861..77f9e2f61839 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php
@@ -145,10 +145,10 @@ public function configure(Event $event = null)
 
     public static function getSubscribedEvents()
     {
-        $events = array(KernelEvents::REQUEST => array('configure', 2048));
+        $events = [KernelEvents::REQUEST => ['configure', 2048]];
 
         if ('cli' === \PHP_SAPI && \defined('Symfony\Component\Console\ConsoleEvents::COMMAND')) {
-            $events[ConsoleEvents::COMMAND] = array('configure', 2048);
+            $events[ConsoleEvents::COMMAND] = ['configure', 2048];
         }
 
         return $events;
diff --git a/src/Symfony/Component/HttpKernel/EventListener/DumpListener.php b/src/Symfony/Component/HttpKernel/EventListener/DumpListener.php
index de19e13113e5..2f47d1068cbe 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/DumpListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/DumpListener.php
@@ -46,10 +46,10 @@ public function configure()
     public static function getSubscribedEvents()
     {
         if (!class_exists(ConsoleEvents::class)) {
-            return array();
+            return [];
         }
 
         // Register early to have a working dump() as early as possible
-        return array(ConsoleEvents::COMMAND => array('configure', 1024));
+        return [ConsoleEvents::COMMAND => ['configure', 1024]];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php b/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
index 71de60434d45..67db029af173 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
@@ -84,9 +84,9 @@ public function onKernelException(GetResponseForExceptionEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::EXCEPTION => array('onKernelException', -128),
-        );
+        return [
+            KernelEvents::EXCEPTION => ['onKernelException', -128],
+        ];
     }
 
     /**
@@ -99,9 +99,9 @@ protected function logException(\Exception $exception, $message)
     {
         if (null !== $this->logger) {
             if (!$exception instanceof HttpExceptionInterface || $exception->getStatusCode() >= 500) {
-                $this->logger->critical($message, array('exception' => $exception));
+                $this->logger->critical($message, ['exception' => $exception]);
             } else {
-                $this->logger->error($message, array('exception' => $exception));
+                $this->logger->error($message, ['exception' => $exception]);
             }
         }
     }
@@ -116,11 +116,11 @@ protected function logException(\Exception $exception, $message)
      */
     protected function duplicateRequest(\Exception $exception, Request $request)
     {
-        $attributes = array(
+        $attributes = [
             '_controller' => $this->controller,
             'exception' => FlattenException::create($exception),
             'logger' => $this->logger instanceof DebugLoggerInterface ? $this->logger : null,
-        );
+        ];
         $request = $request->duplicate(null, null, $attributes);
         $request->setMethod('GET');
 
diff --git a/src/Symfony/Component/HttpKernel/EventListener/FragmentListener.php b/src/Symfony/Component/HttpKernel/EventListener/FragmentListener.php
index 574d7c05c943..1333120e2dd1 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/FragmentListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/FragmentListener.php
@@ -70,7 +70,7 @@ public function onKernelRequest(GetResponseEvent $event)
 
         parse_str($request->query->get('_path', ''), $attributes);
         $request->attributes->add($attributes);
-        $request->attributes->set('_route_params', array_replace($request->attributes->get('_route_params', array()), $attributes));
+        $request->attributes->set('_route_params', array_replace($request->attributes->get('_route_params', []), $attributes));
         $request->query->remove('_path');
     }
 
@@ -92,8 +92,8 @@ protected function validateRequest(Request $request)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array(array('onKernelRequest', 48)),
-        );
+        return [
+            KernelEvents::REQUEST => [['onKernelRequest', 48]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/LocaleListener.php b/src/Symfony/Component/HttpKernel/EventListener/LocaleListener.php
index ed0236efc85e..c7e32dbb2308 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/LocaleListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/LocaleListener.php
@@ -74,10 +74,10 @@ private function setRouterContext(Request $request)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             // must be registered after the Router to have access to the _locale
-            KernelEvents::REQUEST => array(array('onKernelRequest', 16)),
-            KernelEvents::FINISH_REQUEST => array(array('onKernelFinishRequest', 0)),
-        );
+            KernelEvents::REQUEST => [['onKernelRequest', 16]],
+            KernelEvents::FINISH_REQUEST => [['onKernelFinishRequest', 0]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ProfilerListener.php b/src/Symfony/Component/HttpKernel/EventListener/ProfilerListener.php
index 2e54a92f0814..5304b8097bec 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ProfilerListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ProfilerListener.php
@@ -119,10 +119,10 @@ public function onKernelTerminate(PostResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::RESPONSE => array('onKernelResponse', -100),
+        return [
+            KernelEvents::RESPONSE => ['onKernelResponse', -100],
             KernelEvents::EXCEPTION => 'onKernelException',
-            KernelEvents::TERMINATE => array('onKernelTerminate', -1024),
-        );
+            KernelEvents::TERMINATE => ['onKernelTerminate', -1024],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ResponseListener.php b/src/Symfony/Component/HttpKernel/EventListener/ResponseListener.php
index f24784527bb8..43527b7ffc2d 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ResponseListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ResponseListener.php
@@ -49,8 +49,8 @@ public function onKernelResponse(FilterResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             KernelEvents::RESPONSE => 'onKernelResponse',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/RouterListener.php b/src/Symfony/Component/HttpKernel/EventListener/RouterListener.php
index ab5c86cdd0e8..378327b57410 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/RouterListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/RouterListener.php
@@ -118,12 +118,12 @@ public function onKernelRequest(GetResponseEvent $event)
             }
 
             if (null !== $this->logger) {
-                $this->logger->info('Matched route "{route}".', array(
+                $this->logger->info('Matched route "{route}".', [
                     'route' => isset($parameters['_route']) ? $parameters['_route'] : 'n/a',
                     'route_parameters' => $parameters,
                     'request_uri' => $request->getUri(),
                     'method' => $request->getMethod(),
-                ));
+                ]);
             }
 
             $request->attributes->add($parameters);
@@ -157,11 +157,11 @@ public function onKernelException(GetResponseForExceptionEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array(array('onKernelRequest', 32)),
-            KernelEvents::FINISH_REQUEST => array(array('onKernelFinishRequest', 0)),
-            KernelEvents::EXCEPTION => array('onKernelException', -64),
-        );
+        return [
+            KernelEvents::REQUEST => [['onKernelRequest', 32]],
+            KernelEvents::FINISH_REQUEST => [['onKernelFinishRequest', 0]],
+            KernelEvents::EXCEPTION => ['onKernelException', -64],
+        ];
     }
 
     private function createWelcomeResponse()
diff --git a/src/Symfony/Component/HttpKernel/EventListener/SaveSessionListener.php b/src/Symfony/Component/HttpKernel/EventListener/SaveSessionListener.php
index 36809b59af91..5901200a70f7 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/SaveSessionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/SaveSessionListener.php
@@ -58,9 +58,9 @@ public function onKernelResponse(FilterResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             // low priority but higher than StreamedResponseListener
-            KernelEvents::RESPONSE => array(array('onKernelResponse', -1000)),
-        );
+            KernelEvents::RESPONSE => [['onKernelResponse', -1000]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/StreamedResponseListener.php b/src/Symfony/Component/HttpKernel/EventListener/StreamedResponseListener.php
index 2c616b9182b3..895176a931ae 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/StreamedResponseListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/StreamedResponseListener.php
@@ -42,8 +42,8 @@ public function onKernelResponse(FilterResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::RESPONSE => array('onKernelResponse', -1024),
-        );
+        return [
+            KernelEvents::RESPONSE => ['onKernelResponse', -1024],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/SurrogateListener.php b/src/Symfony/Component/HttpKernel/EventListener/SurrogateListener.php
index 634353385715..0fddddde4233 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/SurrogateListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/SurrogateListener.php
@@ -58,8 +58,8 @@ public function onKernelResponse(FilterResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             KernelEvents::RESPONSE => 'onKernelResponse',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/TranslatorListener.php b/src/Symfony/Component/HttpKernel/EventListener/TranslatorListener.php
index 2a5fc712807d..0f506061a66a 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/TranslatorListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/TranslatorListener.php
@@ -51,11 +51,11 @@ public function onKernelFinishRequest(FinishRequestEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             // must be registered after the Locale listener
-            KernelEvents::REQUEST => array(array('onKernelRequest', 10)),
-            KernelEvents::FINISH_REQUEST => array(array('onKernelFinishRequest', 0)),
-        );
+            KernelEvents::REQUEST => [['onKernelRequest', 10]],
+            KernelEvents::FINISH_REQUEST => [['onKernelFinishRequest', 0]],
+        ];
     }
 
     private function setLocale(Request $request)
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ValidateRequestListener.php b/src/Symfony/Component/HttpKernel/EventListener/ValidateRequestListener.php
index a33853f727ba..2e921869b92f 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ValidateRequestListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ValidateRequestListener.php
@@ -44,10 +44,10 @@ public function onKernelRequest(GetResponseEvent $event)
      */
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array(
-                array('onKernelRequest', 256),
-            ),
-        );
+        return [
+            KernelEvents::REQUEST => [
+                ['onKernelRequest', 256],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/AccessDeniedHttpException.php b/src/Symfony/Component/HttpKernel/Exception/AccessDeniedHttpException.php
index 39418842666b..05fe7c4a40b3 100644
--- a/src/Symfony/Component/HttpKernel/Exception/AccessDeniedHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/AccessDeniedHttpException.php
@@ -24,6 +24,6 @@ class AccessDeniedHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(403, $message, $previous, array(), $code);
+        parent::__construct(403, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/BadRequestHttpException.php b/src/Symfony/Component/HttpKernel/Exception/BadRequestHttpException.php
index c28d83739c7a..683ef1a99ecc 100644
--- a/src/Symfony/Component/HttpKernel/Exception/BadRequestHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/BadRequestHttpException.php
@@ -23,6 +23,6 @@ class BadRequestHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(400, $message, $previous, array(), $code);
+        parent::__construct(400, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/ConflictHttpException.php b/src/Symfony/Component/HttpKernel/Exception/ConflictHttpException.php
index 79f24f2e56dc..aaf258a07da8 100644
--- a/src/Symfony/Component/HttpKernel/Exception/ConflictHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/ConflictHttpException.php
@@ -23,6 +23,6 @@ class ConflictHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(409, $message, $previous, array(), $code);
+        parent::__construct(409, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/GoneHttpException.php b/src/Symfony/Component/HttpKernel/Exception/GoneHttpException.php
index 84e6915df70f..f855ba02c820 100644
--- a/src/Symfony/Component/HttpKernel/Exception/GoneHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/GoneHttpException.php
@@ -23,6 +23,6 @@ class GoneHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(410, $message, $previous, array(), $code);
+        parent::__construct(410, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/HttpException.php b/src/Symfony/Component/HttpKernel/Exception/HttpException.php
index e8e37605838c..809d29e6e32f 100644
--- a/src/Symfony/Component/HttpKernel/Exception/HttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/HttpException.php
@@ -21,7 +21,7 @@ class HttpException extends \RuntimeException implements HttpExceptionInterface
     private $statusCode;
     private $headers;
 
-    public function __construct($statusCode, $message = null, \Exception $previous = null, array $headers = array(), $code = 0)
+    public function __construct($statusCode, $message = null, \Exception $previous = null, array $headers = [], $code = 0)
     {
         $this->statusCode = $statusCode;
         $this->headers = $headers;
diff --git a/src/Symfony/Component/HttpKernel/Exception/LengthRequiredHttpException.php b/src/Symfony/Component/HttpKernel/Exception/LengthRequiredHttpException.php
index 645efe87d7c2..8ad08f420840 100644
--- a/src/Symfony/Component/HttpKernel/Exception/LengthRequiredHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/LengthRequiredHttpException.php
@@ -23,6 +23,6 @@ class LengthRequiredHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(411, $message, $previous, array(), $code);
+        parent::__construct(411, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/MethodNotAllowedHttpException.php b/src/Symfony/Component/HttpKernel/Exception/MethodNotAllowedHttpException.php
index e308a5fee276..f256ef8615b1 100644
--- a/src/Symfony/Component/HttpKernel/Exception/MethodNotAllowedHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/MethodNotAllowedHttpException.php
@@ -24,7 +24,7 @@ class MethodNotAllowedHttpException extends HttpException
      */
     public function __construct(array $allow, $message = null, \Exception $previous = null, $code = 0)
     {
-        $headers = array('Allow' => strtoupper(implode(', ', $allow)));
+        $headers = ['Allow' => strtoupper(implode(', ', $allow))];
 
         parent::__construct(405, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/NotAcceptableHttpException.php b/src/Symfony/Component/HttpKernel/Exception/NotAcceptableHttpException.php
index 097a13fd9bc0..a48bbe70ebc1 100644
--- a/src/Symfony/Component/HttpKernel/Exception/NotAcceptableHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/NotAcceptableHttpException.php
@@ -23,6 +23,6 @@ class NotAcceptableHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(406, $message, $previous, array(), $code);
+        parent::__construct(406, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/NotFoundHttpException.php b/src/Symfony/Component/HttpKernel/Exception/NotFoundHttpException.php
index 878173cc7b9a..01a5bd080c67 100644
--- a/src/Symfony/Component/HttpKernel/Exception/NotFoundHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/NotFoundHttpException.php
@@ -23,6 +23,6 @@ class NotFoundHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(404, $message, $previous, array(), $code);
+        parent::__construct(404, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/PreconditionFailedHttpException.php b/src/Symfony/Component/HttpKernel/Exception/PreconditionFailedHttpException.php
index 9f13a624cc0f..3cf33f988a29 100644
--- a/src/Symfony/Component/HttpKernel/Exception/PreconditionFailedHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/PreconditionFailedHttpException.php
@@ -23,6 +23,6 @@ class PreconditionFailedHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(412, $message, $previous, array(), $code);
+        parent::__construct(412, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php b/src/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php
index 9d0a36d7d34d..a2512c5c1bb9 100644
--- a/src/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php
@@ -25,6 +25,6 @@ class PreconditionRequiredHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(428, $message, $previous, array(), $code);
+        parent::__construct(428, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/ServiceUnavailableHttpException.php b/src/Symfony/Component/HttpKernel/Exception/ServiceUnavailableHttpException.php
index b2767c3fd5bc..52ce75132f53 100644
--- a/src/Symfony/Component/HttpKernel/Exception/ServiceUnavailableHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/ServiceUnavailableHttpException.php
@@ -24,9 +24,9 @@ class ServiceUnavailableHttpException extends HttpException
      */
     public function __construct($retryAfter = null, $message = null, \Exception $previous = null, $code = 0)
     {
-        $headers = array();
+        $headers = [];
         if ($retryAfter) {
-            $headers = array('Retry-After' => $retryAfter);
+            $headers = ['Retry-After' => $retryAfter];
         }
 
         parent::__construct(503, $message, $previous, $headers, $code);
diff --git a/src/Symfony/Component/HttpKernel/Exception/TooManyRequestsHttpException.php b/src/Symfony/Component/HttpKernel/Exception/TooManyRequestsHttpException.php
index 7d8a803323b7..d313f7ead85e 100644
--- a/src/Symfony/Component/HttpKernel/Exception/TooManyRequestsHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/TooManyRequestsHttpException.php
@@ -26,9 +26,9 @@ class TooManyRequestsHttpException extends HttpException
      */
     public function __construct($retryAfter = null, $message = null, \Exception $previous = null, $code = 0)
     {
-        $headers = array();
+        $headers = [];
         if ($retryAfter) {
-            $headers = array('Retry-After' => $retryAfter);
+            $headers = ['Retry-After' => $retryAfter];
         }
 
         parent::__construct(429, $message, $previous, $headers, $code);
diff --git a/src/Symfony/Component/HttpKernel/Exception/UnauthorizedHttpException.php b/src/Symfony/Component/HttpKernel/Exception/UnauthorizedHttpException.php
index 05ac875c552e..d945df2bc810 100644
--- a/src/Symfony/Component/HttpKernel/Exception/UnauthorizedHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/UnauthorizedHttpException.php
@@ -24,7 +24,7 @@ class UnauthorizedHttpException extends HttpException
      */
     public function __construct($challenge, $message = null, \Exception $previous = null, $code = 0)
     {
-        $headers = array('WWW-Authenticate' => $challenge);
+        $headers = ['WWW-Authenticate' => $challenge];
 
         parent::__construct(401, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/UnprocessableEntityHttpException.php b/src/Symfony/Component/HttpKernel/Exception/UnprocessableEntityHttpException.php
index 01b8b8465a1a..2263a31253ce 100644
--- a/src/Symfony/Component/HttpKernel/Exception/UnprocessableEntityHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/UnprocessableEntityHttpException.php
@@ -23,6 +23,6 @@ class UnprocessableEntityHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(422, $message, $previous, array(), $code);
+        parent::__construct(422, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/UnsupportedMediaTypeHttpException.php b/src/Symfony/Component/HttpKernel/Exception/UnsupportedMediaTypeHttpException.php
index 6913504e832d..75f844ab5776 100644
--- a/src/Symfony/Component/HttpKernel/Exception/UnsupportedMediaTypeHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/UnsupportedMediaTypeHttpException.php
@@ -23,6 +23,6 @@ class UnsupportedMediaTypeHttpException extends HttpException
      */
     public function __construct($message = null, \Exception $previous = null, $code = 0)
     {
-        parent::__construct(415, $message, $previous, array(), $code);
+        parent::__construct(415, $message, $previous, [], $code);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php b/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php
index 3c8934ff8934..430486e54988 100644
--- a/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php
+++ b/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php
@@ -59,7 +59,7 @@ public function __construct(SurrogateInterface $surrogate = null, FragmentRender
      *
      * @see Symfony\Component\HttpKernel\HttpCache\SurrogateInterface
      */
-    public function render($uri, Request $request, array $options = array())
+    public function render($uri, Request $request, array $options = [])
     {
         if (!$this->surrogate || !$this->surrogate->hasSurrogateCapability($request)) {
             if ($uri instanceof ControllerReference && $this->containsNonScalars($uri->attributes)) {
diff --git a/src/Symfony/Component/HttpKernel/Fragment/FragmentHandler.php b/src/Symfony/Component/HttpKernel/Fragment/FragmentHandler.php
index f11db73dc90c..f40da0018bc1 100644
--- a/src/Symfony/Component/HttpKernel/Fragment/FragmentHandler.php
+++ b/src/Symfony/Component/HttpKernel/Fragment/FragmentHandler.php
@@ -29,7 +29,7 @@
 class FragmentHandler
 {
     private $debug;
-    private $renderers = array();
+    private $renderers = [];
     private $requestStack;
 
     /**
@@ -37,7 +37,7 @@ class FragmentHandler
      * @param FragmentRendererInterface[] $renderers    An array of FragmentRendererInterface instances
      * @param bool                        $debug        Whether the debug mode is enabled or not
      */
-    public function __construct(RequestStack $requestStack, array $renderers = array(), $debug = false)
+    public function __construct(RequestStack $requestStack, array $renderers = [], $debug = false)
     {
         $this->requestStack = $requestStack;
         foreach ($renderers as $renderer) {
@@ -70,7 +70,7 @@ public function addRenderer(FragmentRendererInterface $renderer)
      * @throws \InvalidArgumentException when the renderer does not exist
      * @throws \LogicException           when no master request is being handled
      */
-    public function render($uri, $renderer = 'inline', array $options = array())
+    public function render($uri, $renderer = 'inline', array $options = [])
     {
         if (!isset($options['ignore_errors'])) {
             $options['ignore_errors'] = !$this->debug;
diff --git a/src/Symfony/Component/HttpKernel/Fragment/FragmentRendererInterface.php b/src/Symfony/Component/HttpKernel/Fragment/FragmentRendererInterface.php
index bcf4e9944a9d..8e454a01a6ec 100644
--- a/src/Symfony/Component/HttpKernel/Fragment/FragmentRendererInterface.php
+++ b/src/Symfony/Component/HttpKernel/Fragment/FragmentRendererInterface.php
@@ -31,7 +31,7 @@ interface FragmentRendererInterface
      *
      * @return Response A Response instance
      */
-    public function render($uri, Request $request, array $options = array());
+    public function render($uri, Request $request, array $options = []);
 
     /**
      * Gets the name of the strategy.
diff --git a/src/Symfony/Component/HttpKernel/Fragment/HIncludeFragmentRenderer.php b/src/Symfony/Component/HttpKernel/Fragment/HIncludeFragmentRenderer.php
index f7150c1979b4..a0abc058819a 100644
--- a/src/Symfony/Component/HttpKernel/Fragment/HIncludeFragmentRenderer.php
+++ b/src/Symfony/Component/HttpKernel/Fragment/HIncludeFragmentRenderer.php
@@ -81,7 +81,7 @@ public function hasTemplating()
      *  * id:         An optional hx:include tag id attribute
      *  * attributes: An optional array of hx:include tag attributes
      */
-    public function render($uri, Request $request, array $options = array())
+    public function render($uri, Request $request, array $options = [])
     {
         if ($uri instanceof ControllerReference) {
             if (null === $this->signer) {
@@ -102,7 +102,7 @@ public function render($uri, Request $request, array $options = array())
             $content = $template;
         }
 
-        $attributes = isset($options['attributes']) && \is_array($options['attributes']) ? $options['attributes'] : array();
+        $attributes = isset($options['attributes']) && \is_array($options['attributes']) ? $options['attributes'] : [];
         if (isset($options['id']) && $options['id']) {
             $attributes['id'] = $options['id'];
         }
diff --git a/src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php b/src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php
index 13fc3356242e..73defb9d3ef7 100644
--- a/src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php
+++ b/src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php
@@ -43,7 +43,7 @@ public function __construct(HttpKernelInterface $kernel, EventDispatcherInterfac
      *
      *  * alt: an alternative URI to render in case of an error
      */
-    public function render($uri, Request $request, array $options = array())
+    public function render($uri, Request $request, array $options = [])
     {
         $reference = null;
         if ($uri instanceof ControllerReference) {
@@ -54,10 +54,10 @@ public function render($uri, Request $request, array $options = array())
             // want that as we want to preserve objects (so we manually set Request attributes
             // below instead)
             $attributes = $reference->attributes;
-            $reference->attributes = array();
+            $reference->attributes = [];
 
             // The request format and locale might have been overridden by the user
-            foreach (array('_format', '_locale') as $key) {
+            foreach (['_format', '_locale'] as $key) {
                 if (isset($attributes[$key])) {
                     $reference->attributes[$key] = $attributes[$key];
                 }
@@ -113,7 +113,7 @@ protected function createSubRequest($uri, Request $request)
         unset($server['HTTP_IF_MODIFIED_SINCE']);
         unset($server['HTTP_IF_NONE_MATCH']);
 
-        $subRequest = Request::create($uri, 'get', array(), $cookies, array(), $server);
+        $subRequest = Request::create($uri, 'get', [], $cookies, [], $server);
         if ($request->headers->has('Surrogate-Capability')) {
             $subRequest->headers->set('Surrogate-Capability', $request->headers->get('Surrogate-Capability'));
         }
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/AbstractSurrogate.php b/src/Symfony/Component/HttpKernel/HttpCache/AbstractSurrogate.php
index 3b2d5f262cfc..8918a3057056 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/AbstractSurrogate.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/AbstractSurrogate.php
@@ -24,16 +24,16 @@
 abstract class AbstractSurrogate implements SurrogateInterface
 {
     protected $contentTypes;
-    protected $phpEscapeMap = array(
-        array('<?', '<%', '<s', '<S'),
-        array('<?php echo "<?"; ?>', '<?php echo "<%"; ?>', '<?php echo "<s"; ?>', '<?php echo "<S"; ?>'),
-    );
+    protected $phpEscapeMap = [
+        ['<?', '<%', '<s', '<S'],
+        ['<?php echo "<?"; ?>', '<?php echo "<%"; ?>', '<?php echo "<s"; ?>', '<?php echo "<S"; ?>'],
+    ];
 
     /**
      * @param array $contentTypes An array of content-type that should be parsed for Surrogate information
      *                            (default: text/html, text/xml, application/xhtml+xml, and application/xml)
      */
-    public function __construct(array $contentTypes = array('text/html', 'text/xml', 'application/xhtml+xml', 'application/xml'))
+    public function __construct(array $contentTypes = ['text/html', 'text/xml', 'application/xhtml+xml', 'application/xml'])
     {
         $this->contentTypes = $contentTypes;
     }
@@ -90,7 +90,7 @@ public function needsParsing(Response $response)
      */
     public function handle(HttpCache $cache, $uri, $alt, $ignoreErrors)
     {
-        $subRequest = Request::create($uri, Request::METHOD_GET, array(), $cache->getRequest()->cookies->all(), array(), $cache->getRequest()->server->all());
+        $subRequest = Request::create($uri, Request::METHOD_GET, [], $cache->getRequest()->cookies->all(), [], $cache->getRequest()->server->all());
 
         try {
             $response = $cache->handle($subRequest, HttpKernelInterface::SUB_REQUEST, true);
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/Esi.php b/src/Symfony/Component/HttpKernel/HttpCache/Esi.php
index 69134c71a12c..dc62990b408c 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/Esi.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/Esi.php
@@ -85,7 +85,7 @@ public function process(Request $request, Response $response)
 
         $i = 1;
         while (isset($chunks[$i])) {
-            $options = array();
+            $options = [];
             preg_match_all('/(src|onerror|alt)="([^"]*?)"/', $chunks[$i], $matches, PREG_SET_ORDER);
             foreach ($matches as $set) {
                 $options[$set[1]] = $set[2];
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php b/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php
index ebc5ba6868a4..daaa928fa38f 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php
@@ -32,8 +32,8 @@ class HttpCache implements HttpKernelInterface, TerminableInterface
     private $request;
     private $surrogate;
     private $surrogateCacheStrategy;
-    private $options = array();
-    private $traces = array();
+    private $options = [];
+    private $traces = [];
 
     /**
      * Constructor.
@@ -70,24 +70,24 @@ class HttpCache implements HttpKernelInterface, TerminableInterface
      *                            This setting is overridden by the stale-if-error HTTP Cache-Control extension
      *                            (see RFC 5861).
      */
-    public function __construct(HttpKernelInterface $kernel, StoreInterface $store, SurrogateInterface $surrogate = null, array $options = array())
+    public function __construct(HttpKernelInterface $kernel, StoreInterface $store, SurrogateInterface $surrogate = null, array $options = [])
     {
         $this->store = $store;
         $this->kernel = $kernel;
         $this->surrogate = $surrogate;
 
         // needed in case there is a fatal error because the backend is too slow to respond
-        register_shutdown_function(array($this->store, 'cleanup'));
+        register_shutdown_function([$this->store, 'cleanup']);
 
-        $this->options = array_merge(array(
+        $this->options = array_merge([
             'debug' => false,
             'default_ttl' => 0,
-            'private_headers' => array('Authorization', 'Cookie'),
+            'private_headers' => ['Authorization', 'Cookie'],
             'allow_reload' => false,
             'allow_revalidate' => false,
             'stale_while_revalidate' => 2,
             'stale_if_error' => 60,
-        ), $options);
+        ], $options);
     }
 
     /**
@@ -117,7 +117,7 @@ public function getTraces()
      */
     public function getLog()
     {
-        $log = array();
+        $log = [];
         foreach ($this->traces as $request => $traces) {
             $log[] = sprintf('%s: %s', $request, implode(', ', $traces));
         }
@@ -164,7 +164,7 @@ public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQ
     {
         // FIXME: catch exceptions and implement a 500 error page here? -> in Varnish, there is a built-in error page mechanism
         if (HttpKernelInterface::MASTER_REQUEST === $type) {
-            $this->traces = array();
+            $this->traces = [];
             // Keep a clone of the original request for surrogates so they can access it.
             // We must clone here to get a separate instance because the application will modify the request during
             // the application flow (we know it always does because we do ourselves by setting REMOTE_ADDR to 127.0.0.1
@@ -175,7 +175,7 @@ public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQ
             }
         }
 
-        $this->traces[$this->getTraceKey($request)] = array();
+        $this->traces[$this->getTraceKey($request)] = [];
 
         if (!$request->isMethodSafe(false)) {
             $response = $this->invalidate($request, $catch);
@@ -260,9 +260,9 @@ protected function invalidate(Request $request, $catch = false)
                 $this->store->invalidate($request);
 
                 // As per the RFC, invalidate Location and Content-Location URLs if present
-                foreach (array('Location', 'Content-Location') as $header) {
+                foreach (['Location', 'Content-Location'] as $header) {
                     if ($uri = $response->headers->get($header)) {
-                        $subRequest = Request::create($uri, 'get', array(), array(), array(), $request->server->all());
+                        $subRequest = Request::create($uri, 'get', [], [], [], $request->server->all());
 
                         $this->store->invalidate($subRequest);
                     }
@@ -357,7 +357,7 @@ protected function validate(Request $request, Response $entry, $catch = false)
         // Add our cached etag validator to the environment.
         // We keep the etags from the client to handle the case when the client
         // has a different private valid entry which is not cached here.
-        $cachedEtags = $entry->getEtag() ? array($entry->getEtag()) : array();
+        $cachedEtags = $entry->getEtag() ? [$entry->getEtag()] : [];
         $requestEtags = $request->getETags();
         if ($etags = array_unique(array_merge($cachedEtags, $requestEtags))) {
             $subRequest->headers->set('if_none_match', implode(', ', $etags));
@@ -377,7 +377,7 @@ protected function validate(Request $request, Response $entry, $catch = false)
             $entry = clone $entry;
             $entry->headers->remove('Date');
 
-            foreach (array('Date', 'Expires', 'Cache-Control', 'ETag', 'Last-Modified') as $name) {
+            foreach (['Date', 'Expires', 'Cache-Control', 'ETag', 'Last-Modified'] as $name) {
                 if ($response->headers->has($name)) {
                     $entry->headers->set($name, $response->headers->get($name));
                 }
@@ -448,7 +448,7 @@ protected function forward(Request $request, $catch = false, Response $entry = n
         $response = SubRequestHandler::handle($this->kernel, $request, HttpKernelInterface::MASTER_REQUEST, $catch);
 
         // we don't implement the stale-if-error on Requests, which is nonetheless part of the RFC
-        if (null !== $entry && \in_array($response->getStatusCode(), array(500, 502, 503, 504))) {
+        if (null !== $entry && \in_array($response->getStatusCode(), [500, 502, 503, 504])) {
             if (null === $age = $entry->headers->getCacheControlDirective('stale-if-error')) {
                 $age = $this->options['stale_if_error'];
             }
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/ResponseCacheStrategy.php b/src/Symfony/Component/HttpKernel/HttpCache/ResponseCacheStrategy.php
index 672cc893feb6..168e9564b0c9 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/ResponseCacheStrategy.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/ResponseCacheStrategy.php
@@ -30,8 +30,8 @@ class ResponseCacheStrategy implements ResponseCacheStrategyInterface
 {
     private $cacheable = true;
     private $embeddedResponses = 0;
-    private $ttls = array();
-    private $maxAges = array();
+    private $ttls = [];
+    private $maxAges = [];
     private $isNotCacheableResponseEmbedded = false;
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/Ssi.php b/src/Symfony/Component/HttpKernel/HttpCache/Ssi.php
index 58df17601995..eaaa230b50ee 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/Ssi.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/Ssi.php
@@ -70,7 +70,7 @@ public function process(Request $request, Response $response)
 
         $i = 1;
         while (isset($chunks[$i])) {
-            $options = array();
+            $options = [];
             preg_match_all('/(virtual)="([^"]*?)"/', $chunks[$i], $matches, PREG_SET_ORDER);
             foreach ($matches as $set) {
                 $options[$set[1]] = $set[2];
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/Store.php b/src/Symfony/Component/HttpKernel/HttpCache/Store.php
index 990091d0650a..ffd4f01aea59 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/Store.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/Store.php
@@ -40,7 +40,7 @@ public function __construct($root)
             throw new \RuntimeException(sprintf('Unable to create the store directory (%s).', $this->root));
         }
         $this->keyCache = new \SplObjectStorage();
-        $this->locks = array();
+        $this->locks = [];
     }
 
     /**
@@ -54,7 +54,7 @@ public function cleanup()
             fclose($lock);
         }
 
-        $this->locks = array();
+        $this->locks = [];
     }
 
     /**
@@ -192,11 +192,11 @@ public function write(Request $request, Response $response)
         }
 
         // read existing cache entries, remove non-varying, and add this one to the list
-        $entries = array();
+        $entries = [];
         $vary = $response->headers->get('vary');
         foreach ($this->getMetadata($key) as $entry) {
             if (!isset($entry[1]['vary'][0])) {
-                $entry[1]['vary'] = array('');
+                $entry[1]['vary'] = [''];
             }
 
             if ($entry[1]['vary'][0] != $vary || !$this->requestsMatch($vary, $entry[0], $storedEnv)) {
@@ -207,7 +207,7 @@ public function write(Request $request, Response $response)
         $headers = $this->persistResponse($response);
         unset($headers['age']);
 
-        array_unshift($entries, array($storedEnv, $headers));
+        array_unshift($entries, [$storedEnv, $headers]);
 
         if (false === $this->save($key, serialize($entries))) {
             throw new \RuntimeException('Unable to store the metadata.');
@@ -236,13 +236,13 @@ public function invalidate(Request $request)
         $modified = false;
         $key = $this->getCacheKey($request);
 
-        $entries = array();
+        $entries = [];
         foreach ($this->getMetadata($key) as $entry) {
             $response = $this->restoreResponse($entry[1]);
             if ($response->isFresh()) {
                 $response->expire();
                 $modified = true;
-                $entries[] = array($entry[0], $this->persistResponse($response));
+                $entries[] = [$entry[0], $this->persistResponse($response)];
             } else {
                 $entries[] = $entry;
             }
@@ -293,7 +293,7 @@ private function requestsMatch($vary, $env1, $env2)
     private function getMetadata($key)
     {
         if (!$entries = $this->load($key)) {
-            return array();
+            return [];
         }
 
         return unserialize($entries);
@@ -464,7 +464,7 @@ private function persistRequest(Request $request)
     private function persistResponse(Response $response)
     {
         $headers = $response->headers->all();
-        $headers['X-Status'] = array($response->getStatusCode());
+        $headers['X-Status'] = [$response->getStatusCode()];
 
         return $headers;
     }
@@ -483,7 +483,7 @@ private function restoreResponse($headers, $body = null)
         unset($headers['X-Status']);
 
         if (null !== $body) {
-            $headers['X-Body-File'] = array($body);
+            $headers['X-Body-File'] = [$body];
         }
 
         return new Response($body, $status, $headers);
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/SubRequestHandler.php b/src/Symfony/Component/HttpKernel/HttpCache/SubRequestHandler.php
index 9649072c16c6..a701b235464b 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/SubRequestHandler.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/SubRequestHandler.php
@@ -33,22 +33,22 @@ public static function handle(HttpKernelInterface $kernel, Request $request, $ty
         $trustedHeaderSet = Request::getTrustedHeaderSet();
         if (\method_exists(Request::class, 'getTrustedHeaderName')) {
             Request::setTrustedProxies($trustedProxies, -1);
-            $trustedHeaders = array(
+            $trustedHeaders = [
                 Request::HEADER_FORWARDED => Request::getTrustedHeaderName(Request::HEADER_FORWARDED, false),
                 Request::HEADER_X_FORWARDED_FOR => Request::getTrustedHeaderName(Request::HEADER_X_FORWARDED_FOR, false),
                 Request::HEADER_X_FORWARDED_HOST => Request::getTrustedHeaderName(Request::HEADER_X_FORWARDED_HOST, false),
                 Request::HEADER_X_FORWARDED_PROTO => Request::getTrustedHeaderName(Request::HEADER_X_FORWARDED_PROTO, false),
                 Request::HEADER_X_FORWARDED_PORT => Request::getTrustedHeaderName(Request::HEADER_X_FORWARDED_PORT, false),
-            );
+            ];
             Request::setTrustedProxies($trustedProxies, $trustedHeaderSet);
         } else {
-            $trustedHeaders = array(
+            $trustedHeaders = [
                 Request::HEADER_FORWARDED => 'FORWARDED',
                 Request::HEADER_X_FORWARDED_FOR => 'X_FORWARDED_FOR',
                 Request::HEADER_X_FORWARDED_HOST => 'X_FORWARDED_HOST',
                 Request::HEADER_X_FORWARDED_PROTO => 'X_FORWARDED_PROTO',
                 Request::HEADER_X_FORWARDED_PORT => 'X_FORWARDED_PORT',
-            );
+            ];
         }
 
         // remove untrusted values
@@ -63,8 +63,8 @@ public static function handle(HttpKernelInterface $kernel, Request $request, $ty
         }
 
         // compute trusted values, taking any trusted proxies into account
-        $trustedIps = array();
-        $trustedValues = array();
+        $trustedIps = [];
+        $trustedValues = [];
         foreach (array_reverse($request->getClientIps()) as $ip) {
             $trustedIps[] = $ip;
             $trustedValues[] = sprintf('for="%s"', $ip);
@@ -95,7 +95,7 @@ public static function handle(HttpKernelInterface $kernel, Request $request, $ty
 
         // ensure 127.0.0.1 is set as trusted proxy
         if (!IpUtils::checkIp('127.0.0.1', $trustedProxies)) {
-            Request::setTrustedProxies(array_merge($trustedProxies, array('127.0.0.1')), Request::getTrustedHeaderSet());
+            Request::setTrustedProxies(array_merge($trustedProxies, ['127.0.0.1']), Request::getTrustedHeaderSet());
         }
 
         try {
diff --git a/src/Symfony/Component/HttpKernel/HttpKernel.php b/src/Symfony/Component/HttpKernel/HttpKernel.php
index f34d9b32251b..1e19923eb7e7 100644
--- a/src/Symfony/Component/HttpKernel/HttpKernel.php
+++ b/src/Symfony/Component/HttpKernel/HttpKernel.php
@@ -273,7 +273,7 @@ private function varToString($var)
         }
 
         if (\is_array($var)) {
-            $a = array();
+            $a = [];
             foreach ($var as $k => $v) {
                 $a[] = sprintf('%s => %s', $k, $this->varToString($v));
             }
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index bb546d3c516c..66a3fba2e1e0 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -50,7 +50,7 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     /**
      * @var BundleInterface[]
      */
-    protected $bundles = array();
+    protected $bundles = [];
 
     protected $bundleMap;
     protected $container;
@@ -271,7 +271,7 @@ public function locateResource($name, $dir = null, $first = true)
         $overridePath = substr($path, 9);
         $resourceBundle = null;
         $bundles = $this->getBundle($bundleName, false, true);
-        $files = array();
+        $files = [];
 
         foreach ($bundles as $bundle) {
             if ($isResource && file_exists($file = $dir.'/'.$bundle->getName().$overridePath)) {
@@ -395,7 +395,7 @@ public function loadClassCache($name = 'classes', $extension = '.php')
             @trigger_error(__METHOD__.'() is deprecated since Symfony 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
         }
 
-        $this->loadClassCache = array($name, $extension);
+        $this->loadClassCache = [$name, $extension];
     }
 
     /**
@@ -481,9 +481,9 @@ protected function doLoadClassCache($name, $extension)
     protected function initializeBundles()
     {
         // init bundles
-        $this->bundles = array();
-        $topMostBundles = array();
-        $directChildren = array();
+        $this->bundles = [];
+        $topMostBundles = [];
+        $directChildren = [];
 
         foreach ($this->registerBundles() as $bundle) {
             $name = $bundle->getName();
@@ -515,10 +515,10 @@ protected function initializeBundles()
         }
 
         // inheritance
-        $this->bundleMap = array();
+        $this->bundleMap = [];
         foreach ($topMostBundles as $name => $bundle) {
-            $bundleMap = array($bundle);
-            $hierarchy = array($name);
+            $bundleMap = [$bundle];
+            $hierarchy = [$name];
 
             while (isset($directChildren[$name])) {
                 $name = $directChildren[$name];
@@ -598,7 +598,7 @@ protected function initializeContainer()
         }
 
         if ($this->debug) {
-            $collectedLogs = array();
+            $collectedLogs = [];
             $previousHandler = \defined('PHPUNIT_COMPOSER_INSTALL');
             $previousHandler = $previousHandler ?: set_error_handler(function ($type, $message, $file, $line) use (&$collectedLogs, &$previousHandler) {
                 if (E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) {
@@ -620,14 +620,14 @@ protected function initializeContainer()
                     }
                 }
 
-                $collectedLogs[$message] = array(
+                $collectedLogs[$message] = [
                     'type' => $type,
                     'message' => $message,
                     'file' => $file,
                     'line' => $line,
                     'trace' => $backtrace,
                     'count' => 1,
-                );
+                ];
             });
         }
 
@@ -664,7 +664,7 @@ protected function initializeContainer()
             // Because concurrent requests might still be using them,
             // old container files are not removed immediately,
             // but on a next dump of the container.
-            static $legacyContainers = array();
+            static $legacyContainers = [];
             $oldContainerDir = \dirname($oldContainer->getFileName());
             $legacyContainers[$oldContainerDir.'.legacy'] = true;
             foreach (glob(\dirname($oldContainerDir).\DIRECTORY_SEPARATOR.'*.legacy') as $legacyContainer) {
@@ -688,20 +688,20 @@ protected function initializeContainer()
      */
     protected function getKernelParameters()
     {
-        $bundles = array();
-        $bundlesMetadata = array();
+        $bundles = [];
+        $bundlesMetadata = [];
 
         foreach ($this->bundles as $name => $bundle) {
             $bundles[$name] = \get_class($bundle);
-            $bundlesMetadata[$name] = array(
+            $bundlesMetadata[$name] = [
                 'parent' => $bundle->getParent(),
                 'path' => $bundle->getPath(),
                 'namespace' => $bundle->getNamespace(),
-            );
+            ];
         }
 
         return array_merge(
-            array(
+            [
                 'kernel.root_dir' => realpath($this->rootDir) ?: $this->rootDir,
                 'kernel.project_dir' => realpath($this->getProjectDir()) ?: $this->getProjectDir(),
                 'kernel.environment' => $this->environment,
@@ -713,7 +713,7 @@ protected function getKernelParameters()
                 'kernel.bundles_metadata' => $bundlesMetadata,
                 'kernel.charset' => $this->getCharset(),
                 'kernel.container_class' => $this->getContainerClass(),
-            ),
+            ],
             $this->getEnvParameters(false)
         );
     }
@@ -733,7 +733,7 @@ protected function getEnvParameters()
             @trigger_error(sprintf('The "%s()" method is deprecated as of 3.3 and will be removed in 4.0. Use the %%env()%% syntax to get the value of any environment variable from configuration files instead.', __METHOD__), E_USER_DEPRECATED);
         }
 
-        $parameters = array();
+        $parameters = [];
         foreach ($_SERVER as $key => $value) {
             if (0 === strpos($key, 'SYMFONY__')) {
                 @trigger_error(sprintf('The support of special environment variables that start with SYMFONY__ (such as "%s") is deprecated as of 3.3 and will be removed in 4.0. Use the %%env()%% syntax instead to get the value of environment variables in configuration files.', $key), E_USER_DEPRECATED);
@@ -753,7 +753,7 @@ protected function getEnvParameters()
      */
     protected function buildContainer()
     {
-        foreach (array('cache' => $this->warmupDir ?: $this->getCacheDir(), 'logs' => $this->getLogDir()) as $name => $dir) {
+        foreach (['cache' => $this->warmupDir ?: $this->getCacheDir(), 'logs' => $this->getLogDir()] as $name => $dir) {
             if (!is_dir($dir)) {
                 if (false === @mkdir($dir, 0777, true) && !is_dir($dir)) {
                     throw new \RuntimeException(sprintf("Unable to create the %s directory (%s)\n", $name, $dir));
@@ -782,7 +782,7 @@ protected function buildContainer()
      */
     protected function prepareContainer(ContainerBuilder $container)
     {
-        $extensions = array();
+        $extensions = [];
         foreach ($this->bundles as $bundle) {
             if ($extension = $bundle->getContainerExtension()) {
                 $container->registerExtension($extension);
@@ -844,7 +844,7 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
             $dumper->setProxyDumper(new ProxyDumper());
         }
 
-        $content = $dumper->dump(array(
+        $content = $dumper->dump([
             'class' => $cla
10000
ss,
             'base_class' => $baseClass,
             'file' => $cache->getPath(),
@@ -852,7 +852,7 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
             'debug' => $this->debug,
             'inline_class_loader_parameter' => \PHP_VERSION_ID >= 70000 && !$this->loadClassCache && !class_exists(ClassCollectionLoader::class, false) ? 'container.dumper.inline_class_loader' : null,
             'build_time' => $container->hasParameter('kernel.container_build_time') ? $container->getParameter('kernel.container_build_time') : time(),
-        ));
+        ]);
 
         $rootCode = array_pop($content);
         $dir = \dirname($cache->getPath()).'/';
@@ -878,7 +878,7 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
     protected function getContainerLoader(ContainerInterface $container)
     {
         $locator = new FileLocator($this);
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new XmlFileLoader($container, $locator),
             new YamlFileLoader($container, $locator),
             new IniFileLoader($container, $locator),
@@ -886,7 +886,7 @@ protected function getContainerLoader(ContainerInterface $container)
             new GlobFileLoader($container, $locator),
             new DirectoryLoader($container, $locator),
             new ClosureLoader($container),
-        ));
+        ]);
 
         return new DelegatingLoader($resolver);
     }
@@ -930,8 +930,8 @@ public static function stripComments($source)
                 }
 
                 // replace multiple new lines with a single newline
-                $rawChunk .= preg_replace(array('/\n{2,}/S'), "\n", $token[1]);
-            } elseif (\in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
+                $rawChunk .= preg_replace(['/\n{2,}/S'], "\n", $token[1]);
+            } elseif (\in_array($token[0], [T_COMMENT, T_DOC_COMMENT])) {
                 $ignoreSpace = true;
             } else {
                 $rawChunk .= $token[1];
@@ -956,13 +956,13 @@ public static function stripComments($source)
 
     public function serialize()
     {
-        return serialize(array($this->environment, $this->debug));
+        return serialize([$this->environment, $this->debug]);
     }
 
     public function unserialize($data)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            list($environment, $debug) = unserialize($data, array('allowed_classes' => false));
+            list($environment, $debug) = unserialize($data, ['allowed_classes' => false]);
         } else {
             list($environment, $debug) = unserialize($data);
         }
diff --git a/src/Symfony/Component/HttpKernel/Log/Logger.php b/src/Symfony/Component/HttpKernel/Log/Logger.php
index ca54d22f759b..6cfc75949021 100644
--- a/src/Symfony/Component/HttpKernel/Log/Logger.php
+++ b/src/Symfony/Component/HttpKernel/Log/Logger.php
@@ -22,7 +22,7 @@
  */
 class Logger extends AbstractLogger
 {
-    private static $levels = array(
+    private static $levels = [
         LogLevel::DEBUG => 0,
         LogLevel::INFO => 1,
         LogLevel::NOTICE => 2,
@@ -31,7 +31,7 @@ class Logger extends AbstractLogger
         LogLevel::CRITICAL => 5,
         LogLevel::ALERT => 6,
         LogLevel::EMERGENCY => 7,
-    );
+    ];
 
     private $minLevelIndex;
     private $formatter;
@@ -57,7 +57,7 @@ public function __construct($minLevel = null, $output = 'php://stderr', callable
         }
 
         $this->minLevelIndex = self::$levels[$minLevel];
-        $this->formatter = $formatter ?: array($this, 'format');
+        $this->formatter = $formatter ?: [$this, 'format'];
         if (false === $this->handle = \is_resource($output) ? $output : @fopen($output, 'a')) {
             throw new InvalidArgumentException(sprintf('Unable to open "%s".', $output));
         }
@@ -66,7 +66,7 @@ public function __construct($minLevel = null, $output = 'php://stderr', callable
     /**
      * {@inheritdoc}
      */
-    public function log($level, $message, array $context = array())
+    public function log($level, $message, array $context = [])
     {
         if (!isset(self::$levels[$level])) {
             throw new InvalidArgumentException(sprintf('The log level "%s" does not exist.', $level));
@@ -90,7 +90,7 @@ public function log($level, $message, array $context = array())
     private function format($level, $message, array $context)
     {
         if (false !== strpos($message, '{')) {
-            $replacements = array();
+            $replacements = [];
             foreach ($context as $key => $val) {
                 if (null === $val || is_scalar($val) || (\is_object($val) && method_exists($val, '__toString'))) {
                     $replacements["{{$key}}"] = $val;
diff --git a/src/Symfony/Component/HttpKernel/Profiler/FileProfilerStorage.php b/src/Symfony/Component/HttpKernel/Profiler/FileProfilerStorage.php
index 8bb57cf30cec..810e2fe6f2f8 100644
--- a/src/Symfony/Component/HttpKernel/Profiler/FileProfilerStorage.php
+++ b/src/Symfony/Component/HttpKernel/Profiler/FileProfilerStorage.php
@@ -54,13 +54,13 @@ public function find($ip, $url, $limit, $method, $start = null, $end = null, $st
         $file = $this->getIndexFilename();
 
         if (!file_exists($file)) {
-            return array();
+            return [];
         }
 
         $file = fopen($file, 'r');
         fseek($file, 0, SEEK_END);
 
-        $result = array();
+        $result = [];
         while (\count($result) < $limit && $line = $this->readLineFromFile($file)) {
             $values = str_getcsv($line);
             list($csvToken, $csvIp, $csvMethod, $csvUrl, $csvTime, $csvParent, $csvStatusCode) = $values;
@@ -78,7 +78,7 @@ public function find($ip, $url, $limit, $method, $start = null, $end = null, $st
                 continue;
             }
 
-            $result[$csvToken] = array(
+            $result[$csvToken] = [
                 'token' => $csvToken,
                 'ip' => $csvIp,
                 'method' => $csvMethod,
@@ -86,7 +86,7 @@ public function find($ip, $url, $limit, $method, $start = null, $end = null, $st
                 'time' => $csvTime,
                 'parent' => $csvParent,
                 'status_code' => $csvStatusCode,
-            );
+            ];
         }
 
         fclose($file);
@@ -151,7 +151,7 @@ public function write(Profile $profile)
         }, $profile->getChildren()));
 
         // Store profile
-        $data = array(
+        $data = [
             'token' => $profileToken,
             'parent' => $parentToken,
             'children' => $childrenToken,
@@ -161,7 +161,7 @@ public function write(Profile $profile)
             'url' => $profile->getUrl(),
             'time' => $profile->getTime(),
             'status_code' => $profile->getStatusCode(),
-        );
+        ];
 
         if (false === file_put_contents($file, serialize($data))) {
             return false;
@@ -173,7 +173,7 @@ public function write(Profile $profile)
                 return false;
             }
 
-            fputcsv($file, array(
+            fputcsv($file, [
                 $profile->getToken(),
                 $profile->getIp(),
                 $profile->getMethod(),
@@ -181,7 +181,7 @@ public function write(Profile $profile)
                 $profile->getTime(),
                 $profile->getParentToken(),
                 $profile->getStatusCode(),
-            ));
+            ]);
             fclose($file);
         }
 
diff --git a/src/Symfony/Component/HttpKernel/Profiler/Profile.php b/src/Symfony/Component/HttpKernel/Profiler/Profile.php
index 9216f09e2bc3..c4490bc7a692 100644
--- a/src/Symfony/Component/HttpKernel/Profiler/Profile.php
+++ b/src/Symfony/Component/HttpKernel/Profiler/Profile.php
@@ -25,7 +25,7 @@ class Profile
     /**
      * @var DataCollectorInterface[]
      */
-    private $collectors = array();
+    private $collectors = [];
 
     private $ip;
     private $method;
@@ -41,7 +41,7 @@ class Profile
     /**
      * @var Profile[]
      */
-    private $children = array();
+    private $children = [];
 
     /**
      * @param string $token The token
@@ -74,7 +74,7 @@ public function getToken()
     /**
      * Sets the parent token.
      */
-    public function setParent(Profile $parent)
+    public function setParent(self $parent)
     {
         $this->parent = $parent;
     }
@@ -204,7 +204,7 @@ public function getChildren()
      */
     public function setChildren(array $children)
     {
-        $this->children = array();
+        $this->children = [];
         foreach ($children as $child) {
             $this->addChild($child);
         }
@@ -213,7 +213,7 @@ public function setChildren(array $children)
     /**
      * Adds the child token.
      */
-    public function addChild(Profile $child)
+    public function addChild(self $child)
     {
         $this->children[] = $child;
         $child->setParent($this);
@@ -254,7 +254,7 @@ public function getCollectors()
      */
     public function setCollectors(array $collectors)
     {
-        $this->collectors = array();
+        $this->collectors = [];
         foreach ($collectors as $collector) {
             $this->addCollector($collector);
         }
@@ -282,6 +282,6 @@ public function hasCollector($name)
 
     public function __sleep()
     {
-        return array('token', 'parent', 'children', 'collectors', 'ip', 'method', 'url', 'time', 'statusCode');
+        return ['token', 'parent', 'children', 'collectors', 'ip', 'method', 'url', 'time', 'statusCode'];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Profiler/Profiler.php b/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
index f252da476680..edf6cb833017 100644
--- a/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
+++ b/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
@@ -30,7 +30,7 @@ class Profiler
     /**
      * @var DataCollectorInterface[]
      */
-    private $collectors = array();
+    private $collectors = [];
 
     private $logger;
     private $initiallyEnabled = true;
@@ -103,7 +103,7 @@ public function saveProfile(Profile $profile)
         }
 
         if (!($ret = $this->storage->write($profile)) && null !== $this->logger) {
-            $this->logger->warning('Unable to store the profiler information.', array('configured_storage' => \get_class($this->storage)));
+            $this->logger->warning('Unable to store the profiler information.', ['configured_storage' => \get_class($this->storage)]);
         }
 
         return $ret;
@@ -198,9 +198,9 @@ public function all()
      *
      * @param DataCollectorInterface[] $collectors An array of collectors
      */
-    public function set(array $collectors = array())
+    public function set(array $collectors = [])
     {
-        $this->collectors = array();
+        $this->collectors = [];
         foreach ($collectors as $collector) {
             $this->add($collector);
         }
diff --git a/src/Symfony/Component/HttpKernel/Tests/CacheClearer/ChainCacheClearerTest.php b/src/Symfony/Component/HttpKernel/Tests/CacheClearer/ChainCacheClearerTest.php
index ec2ecff948c8..a7093dfc9df9 100644
--- a/src/Symfony/Component/HttpKernel/Tests/CacheClearer/ChainCacheClearerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/CacheClearer/ChainCacheClearerTest.php
@@ -35,7 +35,7 @@ public function testInjectClearersInConstructor()
             ->expects($this->once())
             ->method('clear');
 
-        $chainClearer = new ChainCacheClearer(array($clearer));
+        $chainClearer = new ChainCacheClearer([$clearer]);
         $chainClearer->clear(self::$cacheDir);
     }
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php b/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
index b3bed4e87f60..297ede6a3602 100644
--- a/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
@@ -24,7 +24,7 @@ public function testClearPoolsInjectedInConstructor()
             ->expects($this->once())
             ->method('clear');
 
-        (new Psr6CacheClearer(array('pool' => $pool)))->clear('');
+        (new Psr6CacheClearer(['pool' => $pool]))->clear('');
     }
 
     public function testClearPool()
@@ -34,7 +34,7 @@ public function testClearPool()
             ->expects($this->once())
             ->method('clear');
 
-        (new Psr6CacheClearer(array('pool' => $pool)))->clearPool('pool');
+        (new Psr6CacheClearer(['pool' => $pool]))->clearPool('pool');
     }
 
     /**
@@ -62,7 +62,7 @@ public function testClearPoolsInjectedByAdder()
             ->expects($this->once())
             ->method('clear');
 
-        $clearer = new Psr6CacheClearer(array('pool1' => $pool1));
+        $clearer = new Psr6CacheClearer(['pool1' => $pool1]);
         $clearer->addPool($pool2);
         $clearer->clear('');
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php b/src/Symfony/Component/HttpKernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php
index ba159124c93e..de15c6f30ce0 100644
--- a/src/Symfony/Component/HttpKernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php
@@ -34,7 +34,7 @@ public function testInjectWarmersUsingConstructor()
         $warmer
             ->expects($this->once())
             ->method('warmUp');
-        $aggregate = new CacheWarmerAggregate(array($warmer));
+        $aggregate = new CacheWarmerAggregate([$warmer]);
         $aggregate->warmUp(self::$cacheDir);
     }
 
@@ -62,7 +62,7 @@ public function testInjectWarmersUsingSetWarmers()
             ->expects($this->once())
             ->method('warmUp');
         $aggregate = new CacheWarmerAggregate();
-        $aggregate->setWarmers(array($warmer));
+        $aggregate->setWarmers([$warmer]);
         $aggregate->warmUp(self::$cacheDir);
     }
 
@@ -76,7 +76,7 @@ public function testWarmupDoesCallWarmupOnOptionalWarmersWhenEnableOptionalWarme
             ->expects($this->once())
             ->method('warmUp');
 
-        $aggregate = new CacheWarmerAggregate(array($warmer));
+        $aggregate = new CacheWarmerAggregate([$warmer]);
         $aggregate->enableOptionalWarmers();
         $aggregate->warmUp(self::$cacheDir);
     }
@@ -92,7 +92,7 @@ public function testWarmupDoesNotCallWarmupOnOptionalWarmersWhenEnableOptionalWa
             ->expects($this->never())
             ->method('warmUp');
 
-        $aggregate = new CacheWarmerAggregate(array($warmer));
+        $aggregate = new CacheWarmerAggregate([$warmer]);
         $aggregate->warmUp(self::$cacheDir);
     }
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/ClientTest.php b/src/Symfony/Component/HttpKernel/Tests/ClientTest.php
index 5af273086820..ac1c55ad54d3 100644
--- a/src/Symfony/Component/HttpKernel/Tests/ClientTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/ClientTest.php
@@ -70,7 +70,7 @@ public function testFilterResponseConvertsCookies()
         $response->headers->setCookie($cookie2 = new Cookie('foo1', 'bar1', \DateTime::createFromFormat('j-M-Y H:i:s T', '15-Feb-2009 20:00:00 GMT')->format('U'), '/foo', 'http://example.com', true, true));
         $domResponse = $m->invoke($client, $response);
         $this->assertSame((string) $cookie1, $domResponse->getHeader('Set-Cookie'));
-        $this->assertSame(array((string) $cookie1, (string) $cookie2), $domResponse->getHeader('Set-Cookie', false));
+        $this->assertSame([(string) $cookie1, (string) $cookie2], $domResponse->getHeader('Set-Cookie', false));
     }
 
     public function testFilterResponseSupportsStreamedResponses()
@@ -99,14 +99,14 @@ public function testUploadedFile()
         $kernel = new TestHttpKernel();
         $client = new Client($kernel);
 
-        $files = array(
-            array('tmp_name' => $source, 'name' => 'original', 'type' => 'mime/original', 'size' => 1, 'error' => UPLOAD_ERR_OK),
+        $files = [
+            ['tmp_name' => $source, 'name' => 'original', 'type' => 'mime/original', 'size' => 1, 'error' => UPLOAD_ERR_OK],
             new UploadedFile($source, 'original', 'mime/original', 1, UPLOAD_ERR_OK, true),
-        );
+        ];
 
         $file = null;
         foreach ($files as $file) {
-            $client->request('POST', '/', array(), array('foo' => $file));
+            $client->request('POST', '/', [], ['foo' => $file]);
 
             $files = $client->getRequest()->files->all();
 
@@ -131,9 +131,9 @@ public function testUploadedFileWhenNoFileSelected()
         $kernel = new TestHttpKernel();
         $client = new Client($kernel);
 
-        $file = array('tmp_name' => '', 'name' => '', 'type' => '', 'size' => 0, 'error' => UPLOAD_ERR_NO_FILE);
+        $file = ['tmp_name' => '', 'name' => '', 'type' => '', 'size' => 0, 'error' => UPLOAD_ERR_NO_FILE];
 
-        $client->request('POST', '/', array(), array('foo' => $file));
+        $client->request('POST', '/', [], ['foo' => $file]);
 
         $files = $client->getRequest()->files->all();
 
@@ -150,8 +150,8 @@ public function testUploadedFileWhenSizeExceedsUploadMaxFileSize()
 
         $file = $this
             ->getMockBuilder('Symfony\Component\HttpFoundation\File\UploadedFile')
-            ->setConstructorArgs(array($source, 'original', 'mime/original', 123, UPLOAD_ERR_OK, true))
-            ->setMethods(array('getSize'))
+            ->setConstructorArgs([$source, 'original', 'mime/original', 123, UPLOAD_ERR_OK, true])
+            ->setMethods(['getSize'])
             ->getMock()
         ;
 
@@ -160,7 +160,7 @@ public function testUploadedFileWhenSizeExceedsUploadMaxFileSize()
             ->will($this->returnValue(INF))
         ;
 
-        $client->request('POST', '/', array(), array($file));
+        $client->request('POST', '/', [], [$file]);
 
         $files = $client->getRequest()->files->all();
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Config/EnvParametersResourceTest.php b/src/Symfony/Component/HttpKernel/Tests/Config/EnvParametersResourceTest.php
index 986e05d8b888..a1bf52957219 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Config/EnvParametersResourceTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Config/EnvParametersResourceTest.php
@@ -25,10 +25,10 @@ class EnvParametersResourceTest extends TestCase
 
     protected function setUp()
     {
-        $this->initialEnv = array(
+        $this->initialEnv = [
             $this->prefix.'1' => 'foo',
             $this->prefix.'2' => 'bar',
-        );
+        ];
 
         foreach ($this->initialEnv as $key => $value) {
             $_SERVER[$key] = $value;
@@ -49,7 +49,7 @@ protected function tearDown()
     public function testGetResource()
     {
         $this->assertSame(
-            array('prefix' => $this->prefix, 'variables' => $this->initialEnv),
+            ['prefix' => $this->prefix, 'variables' => $this->initialEnv],
             $this->resource->getResource(),
             '->getResource() returns the resource'
         );
@@ -58,7 +58,7 @@ public function testGetResource()
     public function testToString()
     {
         $this->assertSame(
-            serialize(array('prefix' => $this->prefix, 'variables' => $this->initialEnv)),
+            serialize(['prefix' => $this->prefix, 'variables' => $this->initialEnv]),
             (string) $this->resource
         );
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
index f6a368963871..2c43e5b1ba00 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
@@ -21,86 +21,86 @@ class ServiceValueResolverTest extends TestCase
 {
     public function testDoNotSupportWhenControllerDoNotExists()
     {
-        $resolver = new ServiceValueResolver(new ServiceLocator(array()));
+        $resolver = new ServiceValueResolver(new ServiceLocator([]));
         $argument = new ArgumentMetadata('dummy', DummyService::class, false, false, null);
-        $request = $this->requestWithAttributes(array('_controller' => 'my_controller'));
+        $request = $this->requestWithAttributes(['_controller' => 'my_controller']);
 
         $this->assertFalse($resolver->supports($request, $argument));
     }
 
     public function testExistingController()
     {
-        $resolver = new ServiceValueResolver(new ServiceLocator(array(
+        $resolver = new ServiceValueResolver(new ServiceLocator([
             'App\\Controller\\Mine::method' => function () {
-                return new ServiceLocator(array(
+                return new ServiceLocator([
                     'dummy' => function () {
                         return new DummyService();
                     },
-                ));
+                ]);
             },
-        )));
+        ]));
 
-        $request = $this->requestWithAttributes(array('_controller' => 'App\\Controller\\Mine::method'));
+        $request = $this->requestWithAttributes(['_controller' => 'App\\Controller\\Mine::method']);
         $argument = new ArgumentMetadata('dummy', DummyService::class, false, false, null);
 
         $this->assertTrue($resolver->supports($request, $argument));
-        $this->assertYieldEquals(array(new DummyService()), $resolver->resolve($request, $argument));
+        $this->assertYieldEquals([new DummyService()], $resolver->resolve($request, $argument));
     }
 
     public function testExistingControllerWithATrailingBackSlash()
     {
-        $resolver = new ServiceValueResolver(new ServiceLocator(array(
+        $resolver = new ServiceValueResolver(new ServiceLocator([
             'App\\Controller\\Mine::method' => function () {
-                return new ServiceLocator(array(
+                return new ServiceLocator([
                     'dummy' => function () {
                         return new DummyService();
                     },
-                ));
+                ]);
             },
-        )));
+        ]));
 
-        $request = $this->requestWithAttributes(array('_controller' => '\\App\\Controller\\Mine::method'));
+        $request = $this->requestWithAttributes(['_controller' => '\\App\\Controller\\Mine::method']);
         $argument = new ArgumentMetadata('dummy', DummyService::class, false, false, null);
 
         $this->assertTrue($resolver->supports($request, $argument));
-        $this->assertYieldEquals(array(new DummyService()), $resolver->resolve($request, $argument));
+        $this->assertYieldEquals([new DummyService()], $resolver->resolve($request, $argument));
     }
 
     public function testExistingControllerWithMethodNameStartUppercase()
     {
-        $resolver = new ServiceValueResolver(new ServiceLocator(array(
+        $resolver = new ServiceValueResolver(new ServiceLocator([
             'App\\Controller\\Mine::method' => function () {
-                return new ServiceLocator(array(
+                return new ServiceLocator([
                     'dummy' => function () {
                         return new DummyService();
                     },
-                ));
+                ]);
             },
-        )));
-        $request = $this->requestWithAttributes(array('_controller' => 'App\\Controller\\Mine::Method'));
+        ]));
+        $request = $this->requestWithAttributes(['_controller' => 'App\\Controller\\Mine::Method']);
         $argument = new ArgumentMetadata('dummy', DummyService::class, false, false, null);
 
         $this->assertTrue($resolver->supports($request, $argument));
-        $this->assertYieldEquals(array(new DummyService()), $resolver->resolve($request, $argument));
+        $this->assertYieldEquals([new DummyService()], $resolver->resolve($request, $argument));
     }
 
     public function testControllerNameIsAnArray()
     {
-        $resolver = new ServiceValueResolver(new ServiceLocator(array(
+        $resolver = new ServiceValueResolver(new ServiceLocator([
             'App\\Controller\\Mine::method' => function () {
-                return new ServiceLocator(array(
+                return new ServiceLocator([
                     'dummy' => function () {
                         return new DummyService();
                     },
-                ));
+                ]);
             },
-        )));
+        ]));
 
-        $request = $this->requestWithAttributes(array('_controller' => array('App\\Controller\\Mine', 'method')));
+        $request = $this->requestWithAttributes(['_controller' => ['App\\Controller\\Mine', 'method']]);
         $argument = new ArgumentMetadata('dummy', DummyService::class, false, false, null);
 
         $this->assertTrue($resolver->supports($request, $argument));
-        $this->assertYieldEquals(array(new DummyService()), $resolver->resolve($request, $argument));
+        $this->assertYieldEquals([new DummyService()], $resolver->resolve($request, $argument));
     }
 
     private function requestWithAttributes(array $attributes)
@@ -116,7 +116,7 @@ private function requestWithAttributes(array $attributes)
 
     private function assertYieldEquals(array $expected, \Generator $generator)
     {
-        $args = array();
+        $args = [];
         foreach ($generator as $arg) {
             $args[] = $arg;
         }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolverTest.php
index 729b90b2f63c..8c900fb92c22 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolverTest.php
@@ -40,33 +40,33 @@ public static function setUpBeforeClass()
     public function testDefaultState()
     {
         $this->assertEquals(self::$resolver, new ArgumentResolver());
-        $this->assertNotEquals(self::$resolver, new ArgumentResolver(null, array(new RequestAttributeValueResolver())));
+        $this->assertNotEquals(self::$resolver, new ArgumentResolver(null, [new RequestAttributeValueResolver()]));
     }
 
     public function testGetArguments()
     {
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
-        $controller = array(new self(), 'controllerWithFoo');
+        $controller = [new self(), 'controllerWithFoo'];
 
-        $this->assertEquals(array('foo'), self::$resolver->getArguments($request, $controller), '->getArguments() returns an array of arguments for the controller method');
+        $this->assertEquals(['foo'], self::$resolver->getArguments($request, $controller), '->getArguments() returns an array of arguments for the controller method');
     }
 
     public function testGetArgumentsReturnsEmptyArrayWhenNoArguments()
     {
         $request = Request::create('/');
-        $controller = array(new self(), 'controllerWithoutArguments');
+        $controller = [new self(), 'controllerWithoutArguments'];
 
-        $this->assertEquals(array(), self::$resolver->getArguments($request, $controller), '->getArguments() returns an empty array if the method takes no arguments');
+        $this->assertEquals([], self::$resolver->getArguments($request, $controller), '->getArguments() returns an empty array if the method takes no arguments');
     }
 
     public function testGetArgumentsUsesDefaultValue()
     {
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
-        $controller = array(new self(), 'controllerWithFooAndDefaultBar');
+        $controller = [new self(), 'controllerWithFooAndDefaultBar'];
 
-        $this->assertEquals(array('foo', null), self::$resolver->getArguments($request, $controller), '->getArguments() uses default values if present');
+        $this->assertEquals(['foo', null], self::$resolver->getArguments($request, $controller), '->getArguments() uses default values if present');
     }
 
     public function testGetArgumentsOverrideDefaultValueByRequestAttribute()
@@ -74,9 +74,9 @@ public function testGetArgumentsOverrideDefaultValueByRequestAttribute()
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $request->attributes->set('bar', 'bar');
-        $controller = array(new self(), 'controllerWithFooAndDefaultBar');
+        $controller = [new self(), 'controllerWithFooAndDefaultBar'];
 
-        $this->assertEquals(array('foo', 'bar'), self::$resolver->getArguments($request, $controller), '->getArguments() overrides default values if provided in the request attributes');
+        $this->assertEquals(['foo', 'bar'], self::$resolver->getArguments($request, $controller), '->getArguments() overrides default values if provided in the request attributes');
     }
 
     public function testGetArgumentsFromClosure()
@@ -85,7 +85,7 @@ public function testGetArgumentsFromClosure()
         $request->attributes->set('foo', 'foo');
         $controller = function ($foo) {};
 
-        $this->assertEquals(array('foo'), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo'], self::$resolver->getArguments($request, $controller));
     }
 
     public function testGetArgumentsUsesDefaultValueFromClosure()
@@ -94,7 +94,7 @@ public function testGetArgumentsUsesDefaultValueFromClosure()
         $request->attributes->set('foo', 'foo');
         $controller = function ($foo, $bar = 'bar') {};
 
-        $this->assertEquals(array('foo', 'bar'), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', 'bar'], self::$resolver->getArguments($request, $controller));
     }
 
     public function testGetArgumentsFromInvokableObject()
@@ -103,12 +103,12 @@ public function testGetArgumentsFromInvokableObject()
         $request->attributes->set('foo', 'foo');
         $controller = new self();
 
-        $this->assertEquals(array('foo', null), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', null], self::$resolver->getArguments($request, $controller));
 
         // Test default bar overridden by request attribute
         $request->attributes->set('bar', 'bar');
 
-        $this->assertEquals(array('foo', 'bar'), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', 'bar'], self::$resolver->getArguments($request, $controller));
     }
 
     public function testGetArgumentsFromFunctionName()
@@ -118,7 +118,7 @@ public function testGetArgumentsFromFunctionName()
         $request->attributes->set('foobar', 'foobar');
         $controller = __NAMESPACE__.'\controller_function';
 
-        $this->assertEquals(array('foo', 'foobar'), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', 'foobar'], self::$resolver->getArguments($request, $controller));
     }
 
     public function testGetArgumentsFailsOnUnresolvedValue()
@@ -126,7 +126,7 @@ public function testGetArgumentsFailsOnUnresolvedValue()
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $request->attributes->set('foobar', 'foobar');
-        $controller = array(new self(), 'controllerWithFooBarFoobar');
+        $controller = [new self(), 'controllerWithFooBarFoobar'];
 
         try {
             self::$resolver->getArguments($request, $controller);
@@ -139,17 +139,17 @@ public function testGetArgumentsFailsOnUnresolvedValue()
     public function testGetArgumentsInjectsRequest()
     {
         $request = Request::create('/');
-        $controller = array(new self(), 'controllerWithRequest');
+        $controller = [new self(), 'controllerWithRequest'];
 
-        $this->assertEquals(array($request), self::$resolver->getArguments($request, $controller), '->getArguments() injects the request');
+        $this->assertEquals([$request], self::$resolver->getArguments($request, $controller), '->getArguments() injects the request');
     }
 
     public function testGetArgumentsInjectsExtendingRequest()
     {
         $request = ExtendingRequest::create('/');
-        $controller = array(new self(), 'controllerWithExtendingRequest');
+        $controller = [new self(), 'controllerWithExtendingRequest'];
 
-        $this->assertEquals(array($request), self::$resolver->getArguments($request, $controller), '->getArguments() injects the request when extended');
+        $this->assertEquals([$request], self::$resolver->getArguments($request, $controller), '->getArguments() injects the request when extended');
     }
 
     /**
@@ -159,10 +159,10 @@ public function testGetVariadicArguments()
     {
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
-        $request->attributes->set('bar', array('foo', 'bar'));
-        $controller = array(new VariadicController(), 'action');
+        $request->attributes->set('bar', ['foo', 'bar']);
+        $controller = [new VariadicController(), 'action'];
 
-        $this->assertEquals(array('foo', 'foo', 'bar'), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', 'foo', 'bar'], self::$resolver->getArguments($request, $controller));
     }
 
     /**
@@ -174,7 +174,7 @@ public function testGetVariadicArgumentsWithoutArrayInRequest()
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $request->attributes->set('bar', 'foo');
-        $controller = array(new VariadicController(), 'action');
+        $controller = [new VariadicController(), 'action'];
 
         self::$resolver->getArguments($request, $controller);
     }
@@ -187,7 +187,7 @@ public function testGetArgumentWithoutArray()
     {
         $factory = new ArgumentMetadataFactory();
         $valueResolver = $this->getMockBuilder(ArgumentValueResolverInterface::class)->getMock();
-        $resolver = new ArgumentResolver($factory, array($valueResolver));
+        $resolver = new ArgumentResolver($factory, [$valueResolver]);
 
         $valueResolver->expects($this->any())->method('supports')->willReturn(true);
         $valueResolver->expects($this->any())->method('resolve')->willReturn('foo');
@@ -195,7 +195,7 @@ public function testGetArgumentWithoutArray()
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $request->attributes->set('bar', 'foo');
-        $controller = array($this, 'controllerWithFooAndDefaultBar');
+        $controller = [$this, 'controllerWithFooAndDefaultBar'];
         $resolver->getArguments($request, $controller);
     }
 
@@ -205,7 +205,7 @@ public function testGetArgumentWithoutArray()
     public function testIfExceptionIsThrownWhenMissingAnArgument()
     {
         $request = Request::create('/');
-        $controller = array($this, 'controllerWithFoo');
+        $controller = [$this, 'controllerWithFoo'];
 
         self::$resolver->getArguments($request, $controller);
     }
@@ -219,9 +219,9 @@ public function testGetNullableArguments()
         $request->attributes->set('foo', 'foo');
         $request->attributes->set('bar', new \stdClass());
         $request->attributes->set('mandatory', 'mandatory');
-        $controller = array(new NullableController(), 'action');
+        $controller = [new NullableController(), 'action'];
 
-        $this->assertEquals(array('foo', new \stdClass(), 'value', 'mandatory'), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', new \stdClass(), 'value', 'mandatory'], self::$resolver->getArguments($request, $controller));
     }
 
     /**
@@ -231,9 +231,9 @@ public function testGetNullableArgumentsWithDefaults()
     {
         $request = Request::create('/');
         $request->attributes->set('mandatory', 'mandatory');
-        $controller = array(new NullableController(), 'action');
+        $controller = [new NullableController(), 'action'];
 
-        $this->assertEquals(array(null, null, 'value', 'mandatory'), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals([null, null, 'value', 'mandatory'], self::$resolver->getArguments($request, $controller));
     }
 
     public function testGetSessionArguments()
@@ -241,9 +241,9 @@ public function testGetSessionArguments()
         $session = new Session(new MockArraySessionStorage());
         $request = Request::create('/');
         $request->setSession($session);
-        $controller = array($this, 'controllerWithSession');
+        $controller = [$this, 'controllerWithSession'];
 
-        $this->assertEquals(array($session), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals([$session], self::$resolver->getArguments($request, $controller));
     }
 
     public function testGetSessionArgumentsWithExtendedSession()
@@ -251,9 +251,9 @@ public function testGetSessionArgumentsWithExtendedSession()
         $session = new ExtendingSession(new MockArraySessionStorage());
         $request = Request::create('/');
         $request->setSession($session);
-        $controller = array($this, 'controllerWithExtendingSession');
+        $controller = [$this, 'controllerWithExtendingSession'];
 
-        $this->assertEquals(array($session), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals([$session], self::$resolver->getArguments($request, $controller));
     }
 
     public function testGetSessionArgumentsWithInterface()
@@ -261,9 +261,9 @@ public function testGetSessionArgumentsWithInterface()
         $session = $this->getMockBuilder(SessionInterface::class)->getMock();
         $request = Request::create('/');
         $request->setSession($session);
-        $controller = array($this, 'controllerWithSessionInterface');
+        $controller = [$this, 'controllerWithSessionInterface'];
 
-        $this->assertEquals(array($session), self::$resolver->getArguments($request, $controller));
+        $this->assertEquals([$session], self::$resolver->getArguments($request, $controller));
     }
 
     /**
@@ -274,7 +274,7 @@ public function testGetSessionMissMatchWithInterface()
         $session = $this->getMockBuilder(SessionInterface::class)->getMock();
         $request = Request::create('/');
         $request->setSession($session);
-        $controller = array($this, 'controllerWithExtendingSession');
+        $controller = [$this, 'controllerWithExtendingSession'];
 
         self::$resolver->getArguments($request, $controller);
     }
@@ -287,7 +287,7 @@ public function testGetSessionMissMatchWithImplementation()
         $session = new Session(new MockArraySessionStorage());
         $request = Request::create('/');
         $request->setSession($session);
-        $controller = array($this, 'controllerWithExtendingSession');
+        $controller = [$this, 'controllerWithExtendingSession'];
 
         self::$resolver->getArguments($request, $controller);
     }
@@ -298,7 +298,7 @@ public function testGetSessionMissMatchWithImplementation()
     public function testGetSessionMissMatchOnNull()
     {
         $request = Request::create('/');
-        $controller = array($this, 'controllerWithExtendingSession');
+        $controller = [$this, 'controllerWithExtendingSession'];
 
         self::$resolver->getArguments($request, $controller);
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ContainerControllerResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ContainerControllerResolverTest.php
index 82407f5601a1..3f130db06500 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ContainerControllerResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ContainerControllerResolverTest.php
@@ -105,11 +105,11 @@ public function testNonInstantiableController()
 
         $resolver = $this->createControllerResolver(null, $container);
         $request = Request::create('/');
-        $request->attributes->set('_controller', array(NonInstantiableController::class, 'action'));
+        $request->attributes->set('_controller', [NonInstantiableController::class, 'action']);
 
         $controller = $resolver->getController($request);
 
-        $this->assertSame(array(NonInstantiableController::class, 'action'), $controller);
+        $this->assertSame([NonInstantiableController::class, 'action'], $controller);
     }
 
     /**
@@ -134,12 +134,12 @@ public function testNonConstructController()
         $container->expects($this->atLeastOnce())
             ->method('getRemovedIds')
             ->with()
-            ->will($this->returnValue(array(ImpossibleConstructController::class => true)))
+            ->will($this->returnValue([ImpossibleConstructController::class => true]))
         ;
 
         $resolver = $this->createControllerResolver(null, $container);
         $request = Request::create('/');
-        $request->attributes->set('_controller', array(ImpossibleConstructController::class, 'action'));
+        $request->attributes->set('_controller', [ImpossibleConstructController::class, 'action']);
 
         if (\PHP_VERSION_ID < 70100) {
             ErrorHandler::register();
@@ -172,11 +172,11 @@ public function testNonInstantiableControllerWithCorrespondingService()
 
         $resolver = $this->createControllerResolver(null, $container);
         $request = Request::create('/');
-        $request->attributes->set('_controller', array(NonInstantiableController::class, 'action'));
+        $request->attributes->set('_controller', [NonInstantiableController::class, 'action']);
 
         $controller = $resolver->getController($request);
 
-        $this->assertSame(array($service, 'action'), $controller);
+        $this->assertSame([$service, 'action'], $controller);
     }
 
     /**
@@ -195,7 +195,7 @@ public function testExceptionWhenUsingRemovedControllerService()
         $container->expects($this->atLeastOnce())
             ->method('getRemovedIds')
             ->with()
-            ->will($this->returnValue(array('app.my_controller' => true)))
+            ->will($this->returnValue(['app.my_controller' => true]))
         ;
 
         $resolver = $this->createControllerResolver(null, $container);
@@ -251,16 +251,16 @@ public function testGetControllerOnNonUndefinedFunction($controller, $exceptionN
 
     public function getUndefinedControllers()
     {
-        return array(
-            array('foo', \LogicException::class, '/Controller not found: service "foo" does not exist\./'),
-            array('oof::bar', \InvalidArgumentException::class, '/Class "oof" does not exist\./'),
-            array('stdClass', \LogicException::class, '/Controller not found: service "stdClass" does not exist\./'),
-            array(
+        return [
+            ['foo', \LogicException::class, '/Controller not found: service "foo" does not exist\./'],
+            ['oof::bar', \InvalidArgumentException::class, '/Class "oof" does not exist\./'],
+            ['stdClass', \LogicException::class, '/Controller not found: service "stdClass" does not exist\./'],
+            [
                 'Symfony\Component\HttpKernel\Tests\Controller\ControllerResolverTest::bar',
                 \InvalidArgumentException::class,
                 '/.?[cC]ontroller(.*?) for URI "\/" is not callable\.( Expected method(.*) Available methods)?/',
-            ),
-        );
+            ],
+        ];
     }
 
     protected function createControllerResolver(LoggerInterface $logger = null, ContainerInterface $container = null)
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
index 87f598d16df7..728382ad2b1e 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
@@ -55,9 +55,9 @@ public function testGetControllerWithObjectAndMethod()
         $resolver = $this->createControllerResolver();
 
         $request = Request::create('/');
-        $request->attributes->set('_controller', array($this, 'controllerMethod1'));
+        $request->attributes->set('_controller', [$this, 'controllerMethod1']);
         $controller = $resolver->getController($request);
-        $this->assertSame(array($this, 'controllerMethod1'), $controller);
+        $this->assertSame([$this, 'controllerMethod1'], $controller);
     }
 
     public function testGetControllerWithClassAndMethod()
@@ -65,9 +65,9 @@ public function testGetControllerWithClassAndMethod()
         $resolver = $this->createControllerResolver();
 
         $request = Request::create('/');
-        $request->attributes->set('_controller', array('Symfony\Component\HttpKernel\Tests\Controller\ControllerResolverTest', 'controllerMethod4'));
+        $request->attributes->set('_controller', ['Symfony\Component\HttpKernel\Tests\Controller\ControllerResolverTest', 'controllerMethod4']);
         $controller = $resolver->getController($request);
-        $this->assertSame(array('Symfony\Component\HttpKernel\Tests\Controller\ControllerResolverTest', 'controllerMethod4'), $controller);
+        $this->assertSame(['Symfony\Component\HttpKernel\Tests\Controller\ControllerResolverTest', 'controllerMethod4'], $controller);
     }
 
     public function testGetControllerWithObjectAndMethodAsString()
@@ -132,16 +132,16 @@ public function testGetControllerOnNonUndefinedFunction($controller, $exceptionN
 
     public function getUndefinedControllers()
     {
-        return array(
-            array(1, 'InvalidArgumentException', 'Unable to find controller "1".'),
-            array('foo', 'InvalidArgumentException', 'Unable to find controller "foo".'),
-            array('oof::bar', 'InvalidArgumentException', 'Class "oof" does not exist.'),
-            array('stdClass', 'InvalidArgumentException', 'Unable to find controller "stdClass".'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::staticsAction', 'InvalidArgumentException', 'The controller for URI "/" is not callable. Expected method "staticsAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest", did you mean "staticAction"?'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::privateAction', 'InvalidArgumentException', 'The controller for URI "/" is not callable. Method "privateAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::protectedAction', 'InvalidArgumentException', 'The controller for URI "/" is not callable. Method "protectedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::undefinedAction', 'InvalidArgumentException', 'The controller for URI "/" is not callable. Expected method "undefinedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest". Available methods: "publicAction", "staticAction"'),
-        );
+        return [
+            [1, 'InvalidArgumentException', 'Unable to find controller "1".'],
+            ['foo', 'InvalidArgumentException', 'Unable to find controller "foo".'],
+            ['oof::bar', 'InvalidArgumentException', 'Class "oof" does not exist.'],
+            ['stdClass', 'InvalidArgumentException', 'Unable to find controller "stdClass".'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::staticsAction', 'InvalidArgumentException', 'The controller for URI "/" is not callable. Expected method "staticsAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest", did you mean "staticAction"?'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::privateAction', 'InvalidArgumentException', 'The controller for URI "/" is not callable. Method "privateAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::protectedAction', 'InvalidArgumentException', 'The controller for URI "/" is not callable. Method "protectedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::undefinedAction', 'InvalidArgumentException', 'The controller for URI "/" is not callable. Expected method "undefinedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest". Available methods: "publicAction", "staticAction"'],
+        ];
     }
 
     /**
@@ -152,49 +152,49 @@ public function testGetArguments()
         $resolver = $this->createControllerResolver();
 
         $request = Request::create('/');
-        $controller = array(new self(), 'testGetArguments');
-        $this->assertEquals(array(), $resolver->getArguments($request, $controller), '->getArguments() returns an empty array if the method takes no arguments');
+        $controller = [new self(), 'testGetArguments'];
+        $this->assertEquals([], $resolver->getArguments($request, $controller), '->getArguments() returns an empty array if the method takes no arguments');
 
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
-        $controller = array(new self(), 'controllerMethod1');
-        $this->assertEquals(array('foo'), $resolver->getArguments($request, $controller), '->getArguments() returns an array of arguments for the controller method');
+        $controller = [new self(), 'controllerMethod1'];
+        $this->assertEquals(['foo'], $resolver->getArguments($request, $controller), '->getArguments() returns an array of arguments for the controller method');
 
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
-        $controller = array(new self(), 'controllerMethod2');
-        $this->assertEquals(array('foo', null), $resolver->getArguments($request, $controller), '->getArguments() uses default values if present');
+        $controller = [new self(), 'controllerMethod2'];
+        $this->assertEquals(['foo', null], $resolver->getArguments($request, $controller), '->getArguments() uses default values if present');
 
         $request->attributes->set('bar', 'bar');
-        $this->assertEquals(array('foo', 'bar'), $resolver->getArguments($request, $controller), '->getArguments() overrides default values if provided in the request attributes');
+        $this->assertEquals(['foo', 'bar'], $resolver->getArguments($request, $controller), '->getArguments() overrides default values if provided in the request attributes');
 
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $controller = function ($foo) {};
-        $this->assertEquals(array('foo'), $resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo'], $resolver->getArguments($request, $controller));
 
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $controller = function ($foo, $bar = 'bar') {};
-        $this->assertEquals(array('foo', 'bar'), $resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', 'bar'], $resolver->getArguments($request, $controller));
 
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $controller = new self();
-        $this->assertEquals(array('foo', null), $resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', null], $resolver->getArguments($request, $controller));
         $request->attributes->set('bar', 'bar');
-        $this->assertEquals(array('foo', 'bar'), $resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', 'bar'], $resolver->getArguments($request, $controller));
 
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $request->attributes->set('foobar', 'foobar');
         $controller = 'Symfony\Component\HttpKernel\Tests\Controller\some_controller_function';
-        $this->assertEquals(array('foo', 'foobar'), $resolver->getArguments($request, $controller));
+        $this->assertEquals(['foo', 'foobar'], $resolver->getArguments($request, $controller));
 
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
         $request->attributes->set('foobar', 'foobar');
-        $controller = array(new self(), 'controllerMethod3');
+        $controller = [new self(), 'controllerMethod3'];
 
         try {
             $resolver->getArguments($request, $controller);
@@ -204,8 +204,8 @@ public function testGetArguments()
         }
 
         $request = Request::create('/');
-        $controller = array(new self(), 'controllerMethod5');
-        $this->assertEquals(array($request), $resolver->getArguments($request, $controller), '->getArguments() injects the request');
+        $controller = [new self(), 'controllerMethod5'];
+        $this->assertEquals([$request], $resolver->getArguments($request, $controller), '->getArguments() injects the request');
     }
 
     /**
@@ -218,14 +218,14 @@ public function testGetVariadicArguments()
 
         $request = Request::create('/');
         $request->attributes->set('foo', 'foo');
-        $request->attributes->set('bar', array('foo', 'bar'));
-        $controller = array(new VariadicController(), 'action');
-        $this->assertEquals(array('foo', 'foo', 'bar'), $resolver->getArguments($request, $controller));
+        $request->attributes->set('bar', ['foo', 'bar']);
+        $controller = [new VariadicController(), 'action'];
+        $this->assertEquals(['foo', 'foo', 'bar'], $resolver->getArguments($request, $controller));
     }
 
     public function testCreateControllerCanReturnAnyCallable()
     {
-        $mock = $this->getMockBuilder('Symfony\Component\HttpKernel\Controller\ControllerResolver')->setMethods(array('createController'))->getMock();
+        $mock = $this->getMockBuilder('Symfony\Component\HttpKernel\Controller\ControllerResolver')->setMethods(['createController'])->getMock();
         $mock->expects($this->once())->method('createController')->will($this->returnValue('Symfony\Component\HttpKernel\Tests\Controller\some_controller_function'));
 
         $request = Request::create('/');
@@ -242,7 +242,7 @@ public function testIfExceptionIsThrownWhenMissingAnArgument()
         $resolver = new ControllerResolver();
         $request = Request::create('/');
 
-        $controller = array($this, 'controllerMethod1');
+        $controller = [$this, 'controllerMethod1'];
 
         $resolver->getArguments($request, $controller);
     }
@@ -259,8 +259,8 @@ public function testGetNullableArguments()
         $request->attributes->set('foo', 'foo');
         $request->attributes->set('bar', new \stdClass());
         $request->attributes->set('mandatory', 'mandatory');
-        $controller = array(new NullableController(), 'action');
-        $this->assertEquals(array('foo', new \stdClass(), 'value', 'mandatory'), $resolver->getArguments($request, $controller));
+        $controller = [new NullableController(), 'action'];
+        $this->assertEquals(['foo', new \stdClass(), 'value', 'mandatory'], $resolver->getArguments($request, $controller));
     }
 
     /**
@@ -273,8 +273,8 @@ public function testGetNullableArgumentsWithDefaults()
 
         $request = Request::create('/');
         $request->attributes->set('mandatory', 'mandatory');
-        $controller = array(new NullableController(), 'action');
-        $this->assertEquals(array(null, null, 'value', 'mandatory'), $resolver->getArguments($request, $controller));
+        $controller = [new NullableController(), 'action'];
+        $this->assertEquals([null, null, 'value', 'mandatory'], $resolver->getArguments($request, $controller));
     }
 
     protected function createControllerResolver(LoggerInterface $logger = null)
diff --git a/src/Symfony/Component/HttpKernel/Tests/ControllerMetadata/ArgumentMetadataFactoryTest.php b/src/Symfony/Component/HttpKernel/Tests/ControllerMetadata/ArgumentMetadataFactoryTest.php
index bf0db5ad5651..1c0c4648a0f2 100644
--- a/src/Symfony/Component/HttpKernel/Tests/ControllerMetadata/ArgumentMetadataFactoryTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/ControllerMetadata/ArgumentMetadataFactoryTest.php
@@ -33,55 +33,55 @@ protected function setUp()
 
     public function testSignature1()
     {
-        $arguments = $this->factory->createArgumentMetadata(array($this, 'signature1'));
+        $arguments = $this->factory->createArgumentMetadata([$this, 'signature1']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ArgumentMetadata('foo', self::class, false, false, null),
             new ArgumentMetadata('bar', 'array', false, false, null),
             new ArgumentMetadata('baz', 'callable', false, false, null),
-        ), $arguments);
+        ], $arguments);
     }
 
     public function testSignature2()
     {
-        $arguments = $this->factory->createArgumentMetadata(array($this, 'signature2'));
+        $arguments = $this->factory->createArgumentMetadata([$this, 'signature2']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ArgumentMetadata('foo', self::class, false, true, null, true),
             new ArgumentMetadata('bar', __NAMESPACE__.'\FakeClassThatDoesNotExist', false, true, null, true),
             new ArgumentMetadata('baz', 'Fake\ImportedAndFake', false, true, null, true),
-        ), $arguments);
+        ], $arguments);
     }
 
     public function testSignature3()
     {
-        $arguments = $this->factory->createArgumentMetadata(array($this, 'signature3'));
+        $arguments = $this->factory->createArgumentMetadata([$this, 'signature3']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ArgumentMetadata('bar', __NAMESPACE__.'\FakeClassThatDoesNotExist', false, false, null),
             new ArgumentMetadata('baz', 'Fake\ImportedAndFake', false, false, null),
-        ), $arguments);
+        ], $arguments);
     }
 
     public function testSignature4()
     {
-        $arguments = $this->factory->createArgumentMetadata(array($this, 'signature4'));
+        $arguments = $this->factory->createArgumentMetadata([$this, 'signature4']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ArgumentMetadata('foo', null, false, true, 'default'),
             new ArgumentMetadata('bar', null, false, true, 500),
-            new ArgumentMetadata('baz', null, false, true, array()),
-        ), $arguments);
+            new ArgumentMetadata('baz', null, false, true, []),
+        ], $arguments);
     }
 
     public function testSignature5()
     {
-        $arguments = $this->factory->createArgumentMetadata(array($this, 'signature5'));
+        $arguments = $this->factory->createArgumentMetadata([$this, 'signature5']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ArgumentMetadata('foo', 'array', false, true, null, true),
             new ArgumentMetadata('bar', null, false, false, null),
-        ), $arguments);
+        ], $arguments);
     }
 
     /**
@@ -89,12 +89,12 @@ public function testSignature5()
      */
     public function testVariadicSignature()
     {
-        $arguments = $this->factory->createArgumentMetadata(array(new VariadicController(), 'action'));
+        $arguments = $this->factory->createArgumentMetadata([new VariadicController(), 'action']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ArgumentMetadata('foo', null, false, false, null),
             new ArgumentMetadata('bar', null, true, false, null),
-        ), $arguments);
+        ], $arguments);
     }
 
     /**
@@ -102,13 +102,13 @@ public function testVariadicSignature()
      */
     public function testBasicTypesSignature()
     {
-        $arguments = $this->factory->createArgumentMetadata(array(new BasicTypesController(), 'action'));
+        $arguments = $this->factory->createArgumentMetadata([new BasicTypesController(), 'action']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ArgumentMetadata('foo', 'string', false, false, null),
             new ArgumentMetadata('bar', 'int', false, false, null),
             new ArgumentMetadata('baz', 'float', false, false, null),
-        ), $arguments);
+        ], $arguments);
     }
 
     /**
@@ -116,14 +116,14 @@ public function testBasicTypesSignature()
      */
     public function testNullableTypesSignature()
     {
-        $arguments = $this->factory->createArgumentMetadata(array(new NullableController(), 'action'));
+        $arguments = $this->factory->createArgumentMetadata([new NullableController(), 'action']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new ArgumentMetadata('foo', 'string', false, false, null, true),
             new ArgumentMetadata('bar', \stdClass::class, false, false, null, true),
             new ArgumentMetadata('baz', 'string', false, true, 'value', true),
             new ArgumentMetadata('mandatory', null, false, false, null, true),
-        ), $arguments);
+        ], $arguments);
     }
 
     private function signature1(self $foo, array $bar, callable $baz)
@@ -138,7 +138,7 @@ private function signature3(FakeClassThatDoesNotExist $bar, ImportedAndFake $baz
     {
     }
 
-    private function signature4($foo = 'default', $bar = 500, $baz = array())
+    private function signature4($foo = 'default', $bar = 500, $baz = [])
     {
     }
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/ConfigDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/ConfigDataCollectorTest.php
index 3f51b13ce9e4..a858eabe155f 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/ConfigDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/ConfigDataCollectorTest.php
@@ -57,7 +57,7 @@ public function registerBundles()
 
     public function getBundles()
     {
-        return array();
+        return [];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
index 54fd39e0d8c8..ae79a3c93c50 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DataCollectorTest.php
@@ -30,7 +30,7 @@ public function testCloneVarStringWithScheme()
 
     public function testCloneVarExistingFilePath()
     {
-        $c = new CloneVarDataCollector(array($filePath = tempnam(sys_get_temp_dir(), 'clone_var_data_collector_')));
+        $c = new CloneVarDataCollector([$filePath = tempnam(sys_get_temp_dir(), 'clone_var_data_collector_')]);
         $c->collect(new Request(), new Response());
 
         $this->assertSame($filePath, $c->getData()[0]);
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DumpDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DumpDataCollectorTest.php
index 341ddc6d8ddd..ebe50e378b87 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DumpDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DumpDataCollectorTest.php
@@ -25,7 +25,7 @@ class DumpDataCollectorTest extends TestCase
 {
     public function testDump()
     {
-        $data = new Data(array(array(123)));
+        $data = new Data([[123]]);
 
         $collector = new DumpDataCollector();
 
@@ -40,15 +40,15 @@ public function testDump()
         $dump[0]['data'] = preg_replace('/^.*?<pre/', '<pre', $dump[0]['data']);
         $dump[0]['data'] = preg_replace('/sf-dump-\d+/', 'sf-dump', $dump[0]['data']);
 
-        $xDump = array(
-            array(
+        $xDump = [
+            [
                 'data' => "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \"><span class=sf-dump-num>123</span>\n</pre><script>Sfdump(\"sf-dump\")</script>\n",
                 'name' => 'DumpDataCollectorTest.php',
                 'file' => __FILE__,
                 'line' => $line,
                 'fileExcerpt' => false,
-            ),
-        );
+            ],
+        ];
         $this->assertEquals($xDump, $dump);
 
         $this->assertStringMatchesFormat('a:3:{i:0;a:5:{s:4:"data";%c:39:"Symfony\Component\VarDumper\Cloner\Data":%a', $collector->serialize());
@@ -58,7 +58,7 @@ public function testDump()
 
     public function testCollectDefault()
     {
-        $data = new Data(array(array(123)));
+      
10000
  $data = new Data([[123]]);
 
         $collector = new DumpDataCollector();
 
@@ -76,7 +76,7 @@ public function testCollectDefault()
 
     public function testCollectHtml()
     {
-        $data = new Data(array(array(123)));
+        $data = new Data([[123]]);
 
         $collector = new DumpDataCollector(null, 'test://%f:%l');
 
@@ -104,7 +104,7 @@ public function testCollectHtml()
 
     public function testFlush()
     {
-        $data = new Data(array(array(456)));
+        $data = new Data([[456]]);
         $collector = new DumpDataCollector();
         $collector->dump($data);
         $line = __LINE__ - 1;
@@ -117,7 +117,7 @@ public function testFlush()
 
     public function testFlushNothingWhenDataDumperIsProvided()
     {
-        $data = new Data(array(array(456)));
+        $data = new Data([[456]]);
         $dumper = new CliDumper('php://output');
         $collector = new DumpDataCollector(null, null, null, null, $dumper);
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/LoggerDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/LoggerDataCollectorTest.php
index 3dec3bd7f87a..90151ae44afd 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/LoggerDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/LoggerDataCollectorTest.php
@@ -21,24 +21,24 @@ public function testCollectWithUnexpectedFormat()
     {
         $logger = $this
             ->getMockBuilder('Symfony\Component\HttpKernel\Log\DebugLoggerInterface')
-            ->setMethods(array('countErrors', 'getLogs', 'clear'))
+            ->setMethods(['countErrors', 'getLogs', 'clear'])
             ->getMock();
         $logger->expects($this->once())->method('countErrors')->will($this->returnValue('foo'));
-        $logger->expects($this->exactly(2))->method('getLogs')->will($this->returnValue(array()));
+        $logger->expects($this->exactly(2))->method('getLogs')->will($this->returnValue([]));
 
         $c = new LoggerDataCollector($logger, __DIR__.'/');
         $c->lateCollect();
         $compilerLogs = $c->getCompilerLogs()->getValue('message');
 
-        $this->assertSame(array(
-            array('message' => 'Removed service "Psr\Container\ContainerInterface"; reason: private alias.'),
-            array('message' => 'Removed service "Symfony\Component\DependencyInjection\ContainerInterface"; reason: private alias.'),
-        ), $compilerLogs['Symfony\Component\DependencyInjection\Compiler\RemovePrivateAliasesPass']);
+        $this->assertSame([
+            ['message' => 'Removed service "Psr\Container\ContainerInterface"; reason: private alias.'],
+            ['message' => 'Removed service "Symfony\Component\DependencyInjection\ContainerInterface"; reason: private alias.'],
+        ], $compilerLogs['Symfony\Component\DependencyInjection\Compiler\RemovePrivateAliasesPass']);
 
-        $this->assertSame(array(
-            array('message' => 'Some custom logging message'),
-            array('message' => 'With ending :'),
-        ), $compilerLogs['Unknown Compiler Pass']);
+        $this->assertSame([
+            ['message' => 'Some custom logging message'],
+            ['message' => 'With ending :'],
+        ], $compilerLogs['Unknown Compiler Pass']);
     }
 
     /**
@@ -48,7 +48,7 @@ public function testCollect($nb, $logs, $expectedLogs, $expectedDeprecationCount
     {
         $logger = $this
             ->getMockBuilder('Symfony\Component\HttpKernel\Log\DebugLoggerInterface')
-            ->setMethods(array('countErrors', 'getLogs', 'clear'))
+            ->setMethods(['countErrors', 'getLogs', 'clear'])
             ->getMock();
         $logger->expects($this->once())->method('countErrors')->will($this->returnValue($nb));
         $logger->expects($this->exactly(2))->method('getLogs')->will($this->returnValue($logs));
@@ -62,7 +62,7 @@ public function testCollect($nb, $logs, $expectedLogs, $expectedDeprecationCount
         $logs = array_map(function ($v) {
             if (isset($v['context']['exception'])) {
                 $e = &$v['context']['exception'];
-                $e = isset($e["\0*\0message"]) ? array($e["\0*\0message"], $e["\0*\0severity"]) : array($e["\0Symfony\Component\Debug\Exception\SilencedErrorContext\0severity"]);
+                $e = isset($e["\0*\0message"]) ? [$e["\0*\0message"], $e["\0*\0severity"]] : [$e["\0Symfony\Component\Debug\Exception\SilencedErrorContext\0severity"]];
             }
 
             return $v;
@@ -80,7 +80,7 @@ public function testReset()
     {
         $logger = $this
             ->getMockBuilder('Symfony\Component\HttpKernel\Log\DebugLoggerInterface')
-            ->setMethods(array('countErrors', 'getLogs', 'clear'))
+            ->setMethods(['countErrors', 'getLogs', 'clear'])
             ->getMock();
         $logger->expects($this->once())->method('clear');
 
@@ -90,55 +90,55 @@ public function testReset()
 
     public function getCollectTestData()
     {
-        yield 'simple log' => array(
+        yield 'simple log' => [
             1,
-            array(array('message' => 'foo', 'context' => array(), 'priority' => 100, 'priorityName' => 'DEBUG')),
-            array(array('message' => 'foo', 'context' => array(), 'priority' => 100, 'priorityName' => 'DEBUG')),
+            [['message' => 'foo', 'context' => [], 'priority' => 100, 'priorityName' => 'DEBUG']],
+            [['message' => 'foo', 'context' => [], 'priority' => 100, 'priorityName' => 'DEBUG']],
             0,
             0,
-        );
+        ];
 
-        yield 'log with a context' => array(
+        yield 'log with a context' => [
             1,
-            array(array('message' => 'foo', 'context' => array('foo' => 'bar'), 'priority' => 100, 'priorityName' => 'DEBUG')),
-            array(array('message' => 'foo', 'context' => array('foo' => 'bar'), 'priority' => 100, 'priorityName' => 'DEBUG')),
+            [['message' => 'foo', 'context' => ['foo' => 'bar'], 'priority' => 100, 'priorityName' => 'DEBUG']],
+            [['message' => 'foo', 'context' => ['foo' => 'bar'], 'priority' => 100, 'priorityName' => 'DEBUG']],
             0,
             0,
-        );
+        ];
 
         if (!class_exists(SilencedErrorContext::class)) {
             return;
         }
 
-        yield 'logs with some deprecations' => array(
+        yield 'logs with some deprecations' => [
             1,
-            array(
-                array('message' => 'foo3', 'context' => array('exception' => new \ErrorException('warning', 0, E_USER_WARNING)), 'priority' => 100, 'priorityName' => 'DEBUG'),
-                array('message' => 'foo', 'context' => array('exception' => new \ErrorException('deprecated', 0, E_DEPRECATED)), 'priority' => 100, 'priorityName' => 'DEBUG'),
-                array('message' => 'foo2', 'context' => array('exception' => new \ErrorException('deprecated', 0, E_USER_DEPRECATED)), 'priority' => 100, 'priorityName' => 'DEBUG'),
-            ),
-            array(
-                array('message' => 'foo3', 'context' => array('exception' => array('warning', E_USER_WARNING)), 'priority' => 100, 'priorityName' => 'DEBUG'),
-                array('message' => 'foo', 'context' => array('exception' => array('deprecated', E_DEPRECATED)), 'priority' => 100, 'priorityName' => 'DEBUG', 'errorCount' => 1, 'scream' => false),
-                array('message' => 'foo2', 'context' => array('exception' => array('deprecated', E_USER_DEPRECATED)), 'priority' => 100, 'priorityName' => 'DEBUG', 'errorCount' => 1, 'scream' => false),
-            ),
+            [
+                ['message' => 'foo3', 'context' => ['exception' => new \ErrorException('warning', 0, E_USER_WARNING)], 'priority' => 100, 'priorityName' => 'DEBUG'],
+                ['message' => 'foo', 'context' => ['exception' => new \ErrorException('deprecated', 0, E_DEPRECATED)], 'priority' => 100, 'priorityName' => 'DEBUG'],
+                ['message' => 'foo2', 'context' => ['exception' => new \ErrorException('deprecated', 0, E_USER_DEPRECATED)], 'priority' => 100, 'priorityName' => 'DEBUG'],
+            ],
+            [
+                ['message' => 'foo3', 'context' => ['exception' => ['warning', E_USER_WARNING]], 'priority' => 100, 'priorityName' => 'DEBUG'],
+                ['message' => 'foo', 'context' => ['exception' => ['deprecated', E_DEPRECATED]], 'priority' => 100, 'priorityName' => 'DEBUG', 'errorCount' => 1, 'scream' => false],
+                ['message' => 'foo2', 'context' => ['exception' => ['deprecated', E_USER_DEPRECATED]], 'priority' => 100, 'priorityName' => 'DEBUG', 'errorCount' => 1, 'scream' => false],
+            ],
             2,
             0,
-            array(100 => array('count' => 3, 'name' => 'DEBUG')),
-        );
+            [100 => ['count' => 3, 'name' => 'DEBUG']],
+        ];
 
-        yield 'logs with some silent errors' => array(
+        yield 'logs with some silent errors' => [
             1,
-            array(
-                array('message' => 'foo3', 'context' => array('exception' => new \ErrorException('warning', 0, E_USER_WARNING)), 'priority' => 100, 'priorityName' => 'DEBUG'),
-                array('message' => 'foo3', 'context' => array('exception' => new SilencedErrorContext(E_USER_WARNING, __FILE__, __LINE__)), 'priority' => 100, 'priorityName' => 'DEBUG'),
-            ),
-            array(
-                array('message' => 'foo3', 'context' => array('exception' => array('warning', E_USER_WARNING)), 'priority' => 100, 'priorityName' => 'DEBUG'),
-                array('message' => 'foo3', 'context' => array('exception' => array(E_USER_WARNING)), 'priority' => 100, 'priorityName' => 'DEBUG', 'errorCount' => 1, 'scream' => true),
-            ),
+            [
+                ['message' => 'foo3', 'context' => ['exception' => new \ErrorException('warning', 0, E_USER_WARNING)], 'priority' => 100, 'priorityName' => 'DEBUG'],
+                ['message' => 'foo3', 'context' => ['exception' => new SilencedErrorContext(E_USER_WARNING, __FILE__, __LINE__)], 'priority' => 100, 'priorityName' => 'DEBUG'],
+            ],
+            [
+                ['message' => 'foo3', 'context' => ['exception' => ['warning', E_USER_WARNING]], 'priority' => 100, 'priorityName' => 'DEBUG'],
+                ['message' => 'foo3', 'context' => ['exception' => [E_USER_WARNING]], 'priority' => 100, 'priorityName' => 'DEBUG', 'errorCount' => 1, 'scream' => true],
+            ],
             0,
             1,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/MemoryDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/MemoryDataCollectorTest.php
index 1435d05e83c3..c434ed1e1162 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/MemoryDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/MemoryDataCollectorTest.php
@@ -39,21 +39,21 @@ public function testBytesConversion($limit, $bytes)
 
     public function getBytesConversionTestData()
     {
-        return array(
-            array('2k', 2048),
-            array('2 k', 2048),
-            array('8m', 8 * 1024 * 1024),
-            array('+2 k', 2048),
-            array('+2???k', 2048),
-            array('0x10', 16),
-            array('0xf', 15),
-            array('010', 8),
-            array('+0x10 k', 16 * 1024),
-            array('1g', 1024 * 1024 * 1024),
-            array('1G', 1024 * 1024 * 1024),
-            array('-1', -1),
-            array('0', 0),
-            array('2mk', 2048), // the unit must be the last char, so in this case 'k', not 'm'
-        );
+        return [
+            ['2k', 2048],
+            ['2 k', 2048],
+            ['8m', 8 * 1024 * 1024],
+            ['+2 k', 2048],
+            ['+2???k', 2048],
+            ['0x10', 16],
+            ['0xf', 15],
+            ['010', 8],
+            ['+0x10 k', 16 * 1024],
+            ['1g', 1024 * 1024 * 1024],
+            ['1G', 1024 * 1024 * 1024],
+            ['-1', -1],
+            ['0', 0],
+            ['2mk', 2048], // the unit must be the last char, so in this case 'k', not 'm'
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
index cce08e27c4cc..5e97267da542 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
@@ -48,8 +48,8 @@ public function testCollect()
         $this->assertInstanceOf(ParameterBag::class, $c->getResponseCookies());
         $this->assertSame('html', $c->getFormat());
         $this->assertEquals('foobar', $c->getRoute());
-        $this->assertEquals(array('name' => 'foo'), $c->getRouteParams());
-        $this->assertSame(array(), $c->getSessionAttributes());
+        $this->assertEquals(['name' => 'foo'], $c->getRouteParams());
+        $this->assertSame([], $c->getSessionAttributes());
         $this->assertSame('en', $c->getLocale());
         $this->assertContains(__FILE__, $attributes->get('resource'));
         $this->assertSame('stdClass', $attributes->get('object')->getType());
@@ -62,13 +62,13 @@ public function testCollect()
 
     public function testCollectWithoutRouteParams()
     {
-        $request = $this->createRequest(array());
+        $request = $this->createRequest([]);
 
         $c = new RequestDataCollector();
         $c->collect($request, $this->createResponse());
         $c->lateCollect();
 
-        $this->assertEquals(array(), $c->getRouteParams());
+        $this->assertEquals([], $c->getRouteParams());
     }
 
     /**
@@ -94,95 +94,95 @@ public function provideControllerCallables()
         $r3 = new \ReflectionClass($this);
 
         // test name, callable, expected
-        return array(
-            array(
+        return [
+            [
                 '"Regular" callable',
-                array($this, 'testControllerInspection'),
-                array(
+                [$this, 'testControllerInspection'],
+                [
                     'class' => __NAMESPACE__.'\RequestDataCollectorTest',
                     'method' => 'testControllerInspection',
                     'file' => __FILE__,
                     'line' => $r1->getStartLine(),
-                ),
-            ),
+                ],
+            ],
 
-            array(
+            [
                 'Closure',
                 function () { return 'foo'; },
-                array(
+                [
                     'class' => __NAMESPACE__.'\{closure}',
                     'method' => null,
                     'file' => __FILE__,
                     'line' => __LINE__ - 5,
-                ),
-            ),
+                ],
+            ],
 
-            array(
+            [
                 'Static callback as string',
                 __NAMESPACE__.'\RequestDataCollectorTest::staticControllerMethod',
-                array(
+                [
                     'class' => 'Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest',
                     'method' => 'staticControllerMethod',
                     'file' => __FILE__,
                     'line' => $r2->getStartLine(),
-                ),
-            ),
+                ],
+            ],
 
-            array(
+            [
                 'Static callable with instance',
-                array($this, 'staticControllerMethod'),
-                array(
+                [$this, 'staticControllerMethod'],
+                [
                     'class' => 'Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest',
                     'method' => 'staticControllerMethod',
                     'file' => __FILE__,
                     'line' => $r2->getStartLine(),
-                ),
-            ),
+                ],
+            ],
 
-            array(
+            [
                 'Static callable with class name',
-                array('Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest', 'staticControllerMethod'),
-                array(
+                ['Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest', 'staticControllerMethod'],
+                [
                     'class' => 'Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest',
                     'method' => 'staticControllerMethod',
                     'file' => __FILE__,
                     'line' => $r2->getStartLine(),
-                ),
-            ),
+                ],
+            ],
 
-            array(
+            [
                 'Callable with instance depending on __call()',
-                array($this, 'magicMethod'),
-                array(
+                [$this, 'magicMethod'],
+                [
                     'class' => 'Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest',
                     'method' => 'magicMethod',
                     'file' => 'n/a',
                     'line' => 'n/a',
-                ),
-            ),
+                ],
+            ],
 
-            array(
+            [
                 'Callable with class name depending on __callStatic()',
-                array('Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest', 'magicMethod'),
-                array(
+                ['Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest', 'magicMethod'],
+                [
                     'class' => 'Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest',
                     'method' => 'magicMethod',
                     'file' => 'n/a',
                     'line' => 'n/a',
-                ),
-            ),
+                ],
+            ],
 
-            array(
+            [
                 'Invokable controller',
                 $this,
-                array(
+                [
                     'class' => 'Symfony\Component\HttpKernel\Tests\DataCollector\RequestDataCollectorTest',
                     'method' => null,
                     'file' => __FILE__,
                     'line' => $r3->getStartLine(),
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
     }
 
     public function testItIgnoresInvalidCallables()
@@ -199,9 +199,9 @@ public function testItIgnoresInvalidCallables()
     public function testItAddsRedirectedAttributesWhenRequestContainsSpecificCookie()
     {
         $request = $this->createRequest();
-        $request->cookies->add(array(
+        $request->cookies->add([
             'sf_redirect' => '{}',
-        ));
+        ]);
 
         $kernel = $this->getMockBuilder(HttpKernelInterface::class)->getMock();
 
@@ -233,9 +233,9 @@ public function testItCollectsTheRedirectionAndClearTheCookie()
 
         $request = $this->createRequest();
         $request->attributes->set('_redirected', true);
-        $request->cookies->add(array(
+        $request->cookies->add([
             'sf_redirect' => '{"method": "POST"}',
-        ));
+        ]);
 
         $c->collect($request, $response = $this->createResponse());
         $c->lateCollect();
@@ -246,7 +246,7 @@ public function testItCollectsTheRedirectionAndClearTheCookie()
         $this->assertNull($cookie->getValue());
     }
 
-    protected function createRequest($routeParams = array('name' => 'foo'))
+    protected function createRequest($routeParams = ['name' => 'foo'])
     {
         $request = Request::create('http://test.com/foo?bar=baz');
         $request->attributes->set('foo', 'bar');
diff --git a/src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php b/src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php
index 3de147c7f79f..8b8e91aeb474 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php
@@ -31,7 +31,7 @@ public function testStopwatchSections()
         $kernel->terminate($request, $response);
 
         $events = $stopwatch->getSectionEvents($response->headers->get('X-Debug-Token'));
-        $this->assertEquals(array(
+        $this->assertEquals([
             '__section__',
             'kernel.request',
             'kernel.controller',
@@ -39,13 +39,13 @@ public function testStopwatchSections()
             'controller',
             'kernel.response',
             'kernel.terminate',
-        ), array_keys($events));
+        ], array_keys($events));
     }
 
     public function testStopwatchCheckControllerOnRequestEvent()
     {
         $stopwatch = $this->getMockBuilder('Symfony\Component\Stopwatch\Stopwatch')
-            ->setMethods(array('isStarted'))
+            ->setMethods(['isStarted'])
             ->getMock();
         $stopwatch->expects($this->once())
             ->method('isStarted')
@@ -61,7 +61,7 @@ public function testStopwatchCheckControllerOnRequestEvent()
     public function testStopwatchStopControllerOnRequestEvent()
     {
         $stopwatch = $this->getMockBuilder('Symfony\Component\Stopwatch\Stopwatch')
-            ->setMethods(array('isStarted', 'stop', 'stopSection'))
+            ->setMethods(['isStarted', 'stop', 'stopSection'])
             ->getMock();
         $stopwatch->expects($this->once())
             ->method('isStarted')
@@ -114,7 +114,7 @@ protected function getHttpKernel($dispatcher, $controller)
         $controllerResolver = $this->getMockBuilder('Symfony\Component\HttpKernel\Controller\ControllerResolverInterface')->getMock();
         $controllerResolver->expects($this->once())->method('getController')->will($this->returnValue($controller));
         $argumentResolver = $this->getMockBuilder('Symfony\Component\HttpKernel\Controller\ArgumentResolverInterface')->getMock();
-        $argumentResolver->expects($this->once())->method('getArguments')->will($this->returnValue(array()));
+        $argumentResolver->expects($this->once())->method('getArguments')->will($this->returnValue([]));
 
         return new HttpKernel($dispatcher, $controllerResolver, new RequestStack(), $argumentResolver);
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/AddAnnotatedClassesToCachePassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/AddAnnotatedClassesToCachePassTest.php
index a2fb6afca4da..914b1dd8d68e 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/AddAnnotatedClassesToCachePassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/AddAnnotatedClassesToCachePassTest.php
@@ -24,76 +24,76 @@ public function testExpandClasses()
         $r->setAccessible(true);
         $expand = $r->getClosure($pass);
 
-        $this->assertSame('Foo', $expand(array('Foo'), array())[0]);
-        $this->assertSame('Foo', $expand(array('\\Foo'), array())[0]);
-        $this->assertSame('Foo', $expand(array('Foo'), array('\\Foo'))[0]);
-        $this->assertSame('Foo', $expand(array('Foo'), array('Foo'))[0]);
-        $this->assertSame('Foo', $expand(array('\\Foo'), array('\\Foo\\Bar'))[0]);
-        $this->assertSame('Foo', $expand(array('Foo'), array('\\Foo\\Bar'))[0]);
-        $this->assertSame('Foo', $expand(array('\\Foo'), array('\\Foo\\Bar\\Acme'))[0]);
+        $this->assertSame('Foo', $expand(['Foo'], [])[0]);
+        $this->assertSame('Foo', $expand(['\\Foo'], [])[0]);
+        $this->assertSame('Foo', $expand(['Foo'], ['\\Foo'])[0]);
+        $this->assertSame('Foo', $expand(['Foo'], ['Foo'])[0]);
+        $this->assertSame('Foo', $expand(['\\Foo'], ['\\Foo\\Bar'])[0]);
+        $this->assertSame('Foo', $expand(['Foo'], ['\\Foo\\Bar'])[0]);
+        $this->assertSame('Foo', $expand(['\\Foo'], ['\\Foo\\Bar\\Acme'])[0]);
 
-        $this->assertSame('Foo\\Bar', $expand(array('Foo\\'), array('\\Foo\\Bar'))[0]);
-        $this->assertSame('Foo\\Bar\\Acme', $expand(array('Foo\\'), array('\\Foo\\Bar\\Acme'))[0]);
-        $this->assertEmpty($expand(array('Foo\\'), array('\\Foo')));
+        $this->assertSame('Foo\\Bar', $expand(['Foo\\'], ['\\Foo\\Bar'])[0]);
+        $this->assertSame('Foo\\Bar\\Acme', $expand(['Foo\\'], ['\\Foo\\Bar\\Acme'])[0]);
+        $this->assertEmpty($expand(['Foo\\'], ['\\Foo']));
 
-        $this->assertSame('Acme\\Foo\\Bar', $expand(array('**\\Foo\\'), array('\\Acme\\Foo\\Bar'))[0]);
-        $this->assertEmpty($expand(array('**\\Foo\\'), array('\\Foo\\Bar')));
-        $this->assertEmpty($expand(array('**\\Foo\\'), array('\\Acme\\Foo')));
-        $this->assertEmpty($expand(array('**\\Foo\\'), array('\\Foo')));
+        $this->assertSame('Acme\\Foo\\Bar', $expand(['**\\Foo\\'], ['\\Acme\\Foo\\Bar'])[0]);
+        $this->assertEmpty($expand(['**\\Foo\\'], ['\\Foo\\Bar']));
+        $this->assertEmpty($expand(['**\\Foo\\'], ['\\Acme\\Foo']));
+        $this->assertEmpty($expand(['**\\Foo\\'], ['\\Foo']));
 
-        $this->assertSame('Acme\\Foo', $expand(array('**\\Foo'), array('\\Acme\\Foo'))[0]);
-        $this->assertEmpty($expand(array('**\\Foo'), array('\\Acme\\Foo\\AcmeBundle')));
-        $this->assertEmpty($expand(array('**\\Foo'), array('\\Acme\\FooBar\\AcmeBundle')));
+        $this->assertSame('Acme\\Foo', $expand(['**\\Foo'], ['\\Acme\\Foo'])[0]);
+        $this->assertEmpty($expand(['**\\Foo'], ['\\Acme\\Foo\\AcmeBundle']));
+        $this->assertEmpty($expand(['**\\Foo'], ['\\Acme\\FooBar\\AcmeBundle']));
 
-        $this->assertSame('Foo\\Acme\\Bar', $expand(array('Foo\\*\\Bar'), array('\\Foo\\Acme\\Bar'))[0]);
-        $this->assertEmpty($expand(array('Foo\\*\\Bar'), array('\\Foo\\Acme\\Bundle\\Bar')));
+        $this->assertSame('Foo\\Acme\\Bar', $expand(['Foo\\*\\Bar'], ['\\Foo\\Acme\\Bar'])[0]);
+        $this->assertEmpty($expand(['Foo\\*\\Bar'], ['\\Foo\\Acme\\Bundle\\Bar']));
 
-        $this->assertSame('Foo\\Acme\\Bar', $expand(array('Foo\\**\\Bar'), array('\\Foo\\Acme\\Bar'))[0]);
-        $this->assertSame('Foo\\Acme\\Bundle\\Bar', $expand(array('Foo\\**\\Bar'), array('\\Foo\\Acme\\Bundle\\Bar'))[0]);
+        $this->assertSame('Foo\\Acme\\Bar', $expand(['Foo\\**\\Bar'], ['\\Foo\\Acme\\Bar'])[0]);
+        $this->assertSame('Foo\\Acme\\Bundle\\Bar', $expand(['Foo\\**\\Bar'], ['\\Foo\\Acme\\Bundle\\Bar'])[0]);
 
-        $this->assertSame('Acme\\Bar', $expand(array('*\\Bar'), array('\\Acme\\Bar'))[0]);
-        $this->assertEmpty($expand(array('*\\Bar'), array('\\Bar')));
-        $this->assertEmpty($expand(array('*\\Bar'), array('\\Foo\\Acme\\Bar')));
+        $this->assertSame('Acme\\Bar', $expand(['*\\Bar'], ['\\Acme\\Bar'])[0]);
+        $this->assertEmpty($expand(['*\\Bar'], ['\\Bar']));
+        $this->assertEmpty($expand(['*\\Bar'], ['\\Foo\\Acme\\Bar']));
 
-        $this->assertSame('Foo\\Acme\\Bar', $expand(array('**\\Bar'), array('\\Foo\\Acme\\Bar'))[0]);
-        $this->assertSame('Foo\\Acme\\Bundle\\Bar', $expand(array('**\\Bar'), array('\\Foo\\Acme\\Bundle\\Bar'))[0]);
-        $this->assertEmpty($expand(array('**\\Bar'), array('\\Bar')));
+        $this->assertSame('Foo\\Acme\\Bar', $expand(['**\\Bar'], ['\\Foo\\Acme\\Bar'])[0]);
+        $this->assertSame('Foo\\Acme\\Bundle\\Bar', $expand(['**\\Bar'], ['\\Foo\\Acme\\Bundle\\Bar'])[0]);
+        $this->assertEmpty($expand(['**\\Bar'], ['\\Bar']));
 
-        $this->assertSame('Foo\\Bar', $expand(array('Foo\\*'), array('\\Foo\\Bar'))[0]);
-        $this->assertEmpty($expand(array('Foo\\*'), array('\\Foo\\Acme\\Bar')));
+        $this->assertSame('Foo\\Bar', $expand(['Foo\\*'], ['\\Foo\\Bar'])[0]);
+        $this->assertEmpty($expand(['Foo\\*'], ['\\Foo\\Acme\\Bar']));
 
-        $this->assertSame('Foo\\Bar', $expand(array('Foo\\**'), array('\\Foo\\Bar'))[0]);
-        $this->assertSame('Foo\\Acme\\Bar', $expand(array('Foo\\**'), array('\\Foo\\Acme\\Bar'))[0]);
+        $this->assertSame('Foo\\Bar', $expand(['Foo\\**'], ['\\Foo\\Bar'])[0]);
+        $this->assertSame('Foo\\Acme\\Bar', $expand(['Foo\\**'], ['\\Foo\\Acme\\Bar'])[0]);
 
-        $this->assertSame(array('Foo\\Bar'), $expand(array('Foo\\*'), array('Foo\\Bar', 'Foo\\BarTest')));
-        $this->assertSame(array('Foo\\Bar', 'Foo\\BarTest'), $expand(array('Foo\\*', 'Foo\\*Test'), array('Foo\\Bar', 'Foo\\BarTest')));
+        $this->assertSame(['Foo\\Bar'], $expand(['Foo\\*'], ['Foo\\Bar', 'Foo\\BarTest']));
+        $this->assertSame(['Foo\\Bar', 'Foo\\BarTest'], $expand(['Foo\\*', 'Foo\\*Test'], ['Foo\\Bar', 'Foo\\BarTest']));
 
         $this->assertSame(
             'Acme\\FooBundle\\Controller\\DefaultController',
-            $expand(array('**Bundle\\Controller\\'), array('\\Acme\\FooBundle\\Controller\\DefaultController'))[0]
+            $expand(['**Bundle\\Controller\\'], ['\\Acme\\FooBundle\\Controller\\DefaultController'])[0]
         );
 
         $this->assertSame(
             'FooBundle\\Controller\\DefaultController',
-            $expand(array('**Bundle\\Controller\\'), array('\\FooBundle\\Controller\\DefaultController'))[0]
+            $expand(['**Bundle\\Controller\\'], ['\\FooBundle\\Controller\\DefaultController'])[0]
         );
 
         $this->assertSame(
             'Acme\\FooBundle\\Controller\\Bar\\DefaultController',
-            $expand(array('**Bundle\\Controller\\'), array('\\Acme\\FooBundle\\Controller\\Bar\\DefaultController'))[0]
+            $expand(['**Bundle\\Controller\\'], ['\\Acme\\FooBundle\\Controller\\Bar\\DefaultController'])[0]
         );
 
         $this->assertSame(
             'Bundle\\Controller\\Bar\\DefaultController',
-            $expand(array('**Bundle\\Controller\\'), array('\\Bundle\\Controller\\Bar\\DefaultController'))[0]
+            $expand(['**Bundle\\Controller\\'], ['\\Bundle\\Controller\\Bar\\DefaultController'])[0]
         );
 
         $this->assertSame(
             'Acme\\Bundle\\Controller\\Bar\\DefaultController',
-            $expand(array('**Bundle\\Controller\\'), array('\\Acme\\Bundle\\Controller\\Bar\\DefaultController'))[0]
+            $expand(['**Bundle\\Controller\\'], ['\\Acme\\Bundle\\Controller\\Bar\\DefaultController'])[0]
         );
 
-        $this->assertSame('Foo\\Bar', $expand(array('Foo\\Bar'), array())[0]);
-        $this->assertSame('Foo\\Acme\\Bar', $expand(array('Foo\\**'), array('\\Foo\\Acme\\Bar'))[0]);
+        $this->assertSame('Foo\\Bar', $expand(['Foo\\Bar'], [])[0]);
+        $this->assertSame('Foo\\Acme\\Bar', $expand(['Foo\\**'], ['\\Foo\\Acme\\Bar'])[0]);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ControllerArgumentValueResolverPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ControllerArgumentValueResolverPassTest.php
index df8977de0b4f..871b7e0ee845 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ControllerArgumentValueResolverPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ControllerArgumentValueResolverPassTest.php
@@ -22,19 +22,19 @@ class ControllerArgumentValueResolverPassTest extends TestCase
 {
     public function testServicesAreOrderedAccordingToPriority()
     {
-        $services = array(
-            'n3' => array(array()),
-            'n1' => array(array('priority' => 200)),
-            'n2' => array(array('priority' => 100)),
-        );
+        $services = [
+            'n3' => [[]],
+            'n1' => [['priority' => 200]],
+            'n2' => [['priority' => 100]],
+        ];
 
-        $expected = array(
+        $expected = [
             new Reference('n1'),
             new Reference('n2'),
             new Reference('n3'),
-        );
+        ];
 
-        $definition = new Definition(ArgumentResolver::class, array(null, array()));
+        $definition = new Definition(ArgumentResolver::class, [null, []]);
         $container = new ContainerBuilder();
         $container->setDefinition('argument_resolver', $definition);
 
@@ -48,12 +48,12 @@ public function testServicesAreOrderedAccordingToPriority()
 
     public function testReturningEmptyArrayWhenNoService()
     {
-        $definition = new Definition(ArgumentResolver::class, array(null, array()));
+        $definition = new Definition(ArgumentResolver::class, [null, []]);
         $container = new ContainerBuilder();
         $container->setDefinition('argument_resolver', $definition);
 
         (new ControllerArgumentValueResolverPass())->process($container);
-        $this->assertEquals(array(), $definition->getArgument(1)->getValues());
+        $this->assertEquals([], $definition->getArgument(1)->getValues());
     }
 
     public function testNoArgumentResolver()
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/FragmentRendererPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/FragmentRendererPassTest.php
index e8957bb3ccfa..087c66659633 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/FragmentRendererPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/FragmentRendererPassTest.php
@@ -33,12 +33,12 @@ public function testContentRendererWithoutInterface()
         $builder = new ContainerBuilder();
         $fragmentHandlerDefinition = $builder->register('fragment.handler');
         $builder->register('my_content_renderer', 'Symfony\Component\DependencyInjection\Definition')
-            ->addTag('kernel.fragment_renderer', array('alias' => 'foo'));
+            ->addTag('kernel.fragment_renderer', ['alias' => 'foo']);
 
         $pass = new FragmentRendererPass();
         $pass->process($builder);
 
-        $this->assertEquals(array(array('addRendererService', array('foo', 'my_content_renderer'))), $fragmentHandlerDefinition->getMethodCalls());
+        $this->assertEquals([['addRendererService', ['foo', 'my_content_renderer']]], $fragmentHandlerDefinition->getMethodCalls());
     }
 
     public function testValidContentRenderer()
@@ -47,20 +47,20 @@ public function testValidContentRenderer()
         $fragmentHandlerDefinition = $builder->register('fragment.handler')
             ->addArgument(null);
         $builder->register('my_content_renderer', 'Symfony\Component\HttpKernel\Tests\DependencyInjection\RendererService')
-            ->addTag('kernel.fragment_renderer', array('alias' => 'foo'));
+            ->addTag('kernel.fragment_renderer', ['alias' => 'foo']);
 
         $pass = new FragmentRendererPass();
         $pass->process($builder);
 
         $serviceLocatorDefinition = $builder->getDefinition((string) $fragmentHandlerDefinition->getArgument(0));
         $this->assertSame(ServiceLocator::class, $serviceLocatorDefinition->getClass());
-        $this->assertEquals(array('foo' => new ServiceClosureArgument(new Reference('my_content_renderer'))), $serviceLocatorDefinition->getArgument(0));
+        $this->assertEquals(['foo' => new ServiceClosureArgument(new Reference('my_content_renderer'))], $serviceLocatorDefinition->getArgument(0));
     }
 }
 
 class RendererService implements FragmentRendererInterface
 {
-    public function render($uri, Request $request = null, array $options = array())
+    public function render($uri, Request $request = null, array $options = [])
     {
     }
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/MergeExtensionConfigurationPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/MergeExtensionConfigurationPassTest.php
index ae421d919bfd..7af756e0b8c1 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/MergeExtensionConfigurationPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/MergeExtensionConfigurationPassTest.php
@@ -23,9 +23,9 @@ public function testAutoloadMainExtension()
         $container = new ContainerBuilder();
         $container->registerExtension(new LoadedExtension());
         $container->registerExtension(new NotLoadedExtension());
-        $container->loadFromExtension('loaded', array());
+        $container->loadFromExtension('loaded', []);
 
-        $configPass = new MergeExtensionConfigurationPass(array('loaded', 'not_loaded'));
+        $configPass = new MergeExtensionConfigurationPass(['loaded', 'not_loaded']);
         $configPass->process($container);
 
         $this->assertTrue($container->hasDefinition('loaded.foo'));
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
index ca121c732711..6d0da5fcf868 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
@@ -32,7 +32,7 @@ class RegisterControllerArgumentLocatorsPassTest extends TestCase
     public function testInvalidClass()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NotFound::class)
             ->addTag('controller.service_arguments')
@@ -49,10 +49,10 @@ public function testInvalidClass()
     public function testNoAction()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('argument' => 'bar'))
+            ->addTag('controller.service_arguments', ['argument' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -66,10 +66,10 @@ public function testNoAction()
     public function testNoArgument()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -83,10 +83,10 @@ public function testNoArgument()
     public function testNoService()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -100,10 +100,10 @@ public function testNoService()
     public function testInvalidMethod()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'barAction', 'argument' => 'bar', 'id' => 'bar_service'))
+            ->addTag('controller.service_arguments', ['action' => 'barAction', 'argument' => 'bar', 'id' => 'bar_service'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -117,10 +117,10 @@ public function testInvalidMethod()
     public function testInvalidArgument()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'baz', 'id' => 'bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'baz', 'id' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -130,7 +130,7 @@ public function testInvalidArgument()
     public function testAllActions()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
             ->addTag('controller.service_arguments')
@@ -141,7 +141,7 @@ public function testAllActions()
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
 
-        $this->assertEquals(array('foo:fooAction'), array_keys($locator));
+        $this->assertEquals(['foo:fooAction'], array_keys($locator));
         $this->assertInstanceof(ServiceClosureArgument::class, $locator['foo:fooAction']);
 
         $locator = $container->getDefinition((string) $locator['foo:fooAction']->getValues()[0]);
@@ -149,18 +149,18 @@ public function testAllActions()
         $this->assertSame(ServiceLocator::class, $locator->getClass());
         $this->assertFalse($locator->isPublic());
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference(ControllerDummy::class, ControllerDummy::class, RegisterTestController::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference(ControllerDummy::class, ControllerDummy::class, RegisterTestController::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testExplicitArgument()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => 'bar'))
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => 'baz')) // should be ignored, the first wins
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => 'bar'])
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => 'baz']) // should be ignored, the first wins
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -169,17 +169,17 @@ public function testExplicitArgument()
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
         $locator = $container->getDefinition((string) $locator['foo:fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, RegisterTestController::class)));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, RegisterTestController::class))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testOptionalArgument()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => '?bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => '?bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -188,14 +188,14 @@ public function testOptionalArgument()
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
         $locator = $container->getDefinition((string) $locator['foo:fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, RegisterTestController::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, RegisterTestController::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testSkipSetContainer()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ContainerAwareRegisterTestController::class)
             ->addTag('controller.service_arguments');
@@ -204,7 +204,7 @@ public function testSkipSetContainer()
         $pass->process($container);
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
-        $this->assertSame(array('foo:fooAction'), array_keys($locator));
+        $this->assertSame(['foo:fooAction'], array_keys($locator));
     }
 
     /**
@@ -214,7 +214,7 @@ public function testSkipSetContainer()
     public function testExceptionOnNonExistentTypeHint()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassController::class)
             ->addTag('controller.service_arguments');
@@ -230,7 +230,7 @@ public function testExceptionOnNonExistentTypeHint()
     public function testExceptionOnNonExistentTypeHintDifferentNamespace()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassDifferentNamespaceController::class)
             ->addTag('controller.service_arguments');
@@ -242,7 +242,7 @@ public function testExceptionOnNonExistentTypeHintDifferentNamespace()
     public function testNoExceptionOnNonExistentTypeHintOptionalArg()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassOptionalController::class)
             ->addTag('controller.service_arguments');
@@ -251,13 +251,13 @@ public function testNoExceptionOnNonExistentTypeHintOptionalArg()
         $pass->process($container);
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
-        $this->assertSame(array('foo:barAction', 'foo:fooAction'), array_keys($locator));
+        $this->assertSame(['foo:barAction', 'foo:fooAction'], array_keys($locator));
     }
 
     public function testArgumentWithNoTypeHintIsOk()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
             ->addTag('controller.service_arguments');
@@ -272,7 +272,7 @@ public function testArgumentWithNoTypeHintIsOk()
     public function testControllersAreMadePublic()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
             ->setPublic(false)
@@ -290,10 +290,10 @@ public function testControllersAreMadePublic()
     public function testBindings($bindingName)
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->setBindings(array($bindingName => new Reference('foo')))
+            ->setBindings([$bindingName => new Reference('foo')])
             ->addTag('controller.service_arguments');
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -303,22 +303,22 @@ public function testBindings($bindingName)
 
         $locator = $container->getDefinition((string) $locator['foo:fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new Reference('foo')));
+        $expected = ['bar' => new ServiceClosureArgument(new Reference('foo'))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function provideBindings()
     {
-        return array(array(ControllerDummy::class), array('$bar'));
+        return [[ControllerDummy::class], ['$bar']];
     }
 
     public function testDoNotBindScalarValueToControllerArgument()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
-            ->setBindings(array('$someArg' => '%foo%'))
+            ->setBindings(['$someArg' => '%foo%'])
             ->addTag('controller.service_arguments');
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -331,12 +331,12 @@ public function testDoNotBindScalarValueToControllerArgument()
     public function testBindingsOnChildDefinitions()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('parent', ArgumentWithoutTypeController::class);
 
         $container->setDefinition('child', (new ChildDefinition('parent'))
-            ->setBindings(array('$someArg' => new Reference('parent')))
+            ->setBindings(['$someArg' => new Reference('parent')])
             ->addTag('controller.service_arguments')
         );
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php
index 9cac9681857f..713ab5441aba 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php
@@ -23,13 +23,13 @@ class RemoveEmptyControllerArgumentLocatorsPassTest extends TestCase
     public function testProcess()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('stdClass', 'stdClass');
         $container->register(parent::class, 'stdClass');
         $container->register('c1', RemoveTestController1::class)->addTag('controller.service_arguments');
         $container->register('c2', RemoveTestController2::class)->addTag('controller.service_arguments')
-            ->addMethodCall('setTestCase', array(new Reference('c1')));
+            ->addMethodCall('setTestCase', [new Reference('c1')]);
 
         $pass = new RegisterControllerArgumentLocatorsPass();
         $pass->process($container);
@@ -43,19 +43,19 @@ public function testProcess()
         (new ResolveInvalidReferencesPass())->process($container);
 
         $this->assertCount(1, $container->getDefinition((string) $controllers['c2:setTestCase']->getValues()[0])->getArgument(0));
-        $this->assertSame(array(), $container->getDefinition((string) $controllers['c2:fooAction']->getValues()[0])->getArgument(0));
+        $this->assertSame([], $container->getDefinition((string) $controllers['c2:fooAction']->getValues()[0])->getArgument(0));
 
         (new RemoveEmptyControllerArgumentLocatorsPass())->process($container);
 
         $controllers = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
 
-        $this->assertSame(array('c1:fooAction'), array_keys($controllers));
-        $this->assertSame(array('bar'), array_keys($container->getDefinition((string) $controllers['c1:fooAction']->getValues()[0])->getArgument(0)));
+        $this->assertSame(['c1:fooAction'], array_keys($controllers));
+        $this->assertSame(['bar'], array_keys($container->getDefinition((string) $controllers['c1:fooAction']->getValues()[0])->getArgument(0)));
 
-        $expectedLog = array(
+        $expectedLog = [
             'Symfony\Component\HttpKernel\DependencyInjection\RemoveEmptyControllerArgumentLocatorsPass: Removing service-argument resolver for controller "c2:fooAction": no corresponding services exist for the referenced types.',
             'Symfony\Component\HttpKernel\DependencyInjection\RemoveEmptyControllerArgumentLocatorsPass: Removing method "setTestCase" of service "c2" from controller candidates: the method is called at instantiation, thus cannot be an action.',
-        );
+        ];
 
         $this->assertSame($expectedLog, $container->getCompiler()->getLog());
     }
@@ -63,7 +63,7 @@ public function testProcess()
     public function testSameIdClass()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register(RegisterTestController::class, RegisterTestController::class)
             ->addTag('controller.service_arguments')
@@ -72,17 +72,17 @@ public function testSameIdClass()
         (new RegisterControllerArgumentLocatorsPass())->process($container);
         (new RemoveEmptyControllerArgumentLocatorsPass())->process($container);
 
-        $expected = array(
+        $expected = [
             RegisterTestController::class.':fooAction',
             RegisterTestController::class.'::fooAction',
-        );
+        ];
         $this->assertEquals($expected, array_keys($container->getDefinition((string) $resolver->getArgument(0))->getArgument(0)));
     }
 
     public function testInvoke()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('invokable', InvokableRegisterTestController::class)
             ->addTag('controller.service_arguments')
@@ -92,7 +92,7 @@ public function testInvoke()
         (new RemoveEmptyControllerArgumentLocatorsPass())->process($container);
 
         $this->assertEquals(
-            array('invokable:__invoke', 'invokable'),
+            ['invokable:__invoke', 'invokable'],
             array_keys($container->getDefinition((string) $resolver->getArgument(0))->getArgument(0))
         );
     }
@@ -100,7 +100,7 @@ public function testInvoke()
     public function testInvokeSameIdClass()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register(InvokableRegisterTestController::class, InvokableRegisterTestController::class)
             ->addTag('controller.service_arguments')
@@ -109,11 +109,11 @@ public function testInvokeSameIdClass()
         (new RegisterControllerArgumentLocatorsPass())->process($container);
         (new RemoveEmptyControllerArgumentLocatorsPass())->process($container);
 
-        $expected = array(
+        $expected = [
             InvokableRegisterTestController::class.':__invoke',
             InvokableRegisterTestController::class.'::__invoke',
             InvokableRegisterTestController::class,
-        );
+        ];
         $this->assertEquals($expected, array_keys($container->getDefinition((string) $resolver->getArgument(0))->getArgument(0)));
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ResettableServicePassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ResettableServicePassTest.php
index f7ea16dbfb03..9b23ad003d75 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ResettableServicePassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ResettableServicePassTest.php
@@ -19,14 +19,14 @@ public function testCompilerPass()
         $container = new ContainerBuilder();
         $container->register('one', ResettableService::class)
             ->setPublic(true)
-            ->addTag('kernel.reset', array('method' => 'reset'));
+            ->addTag('kernel.reset', ['method' => 'reset']);
         $container->register('two', ClearableService::class)
             ->setPublic(true)
-            ->addTag('kernel.reset', array('method' => 'clear'));
+            ->addTag('kernel.reset', ['method' => 'clear']);
 
         $container->register('services_resetter', ServicesResetter::class)
             ->setPublic(true)
-            ->setArguments(array(null, array()));
+            ->setArguments([null, []]);
         $container->addCompilerPass(new ResettableServicePass());
 
         $container->compile();
@@ -34,16 +34,16 @@ public function testCompilerPass()
         $definition = $container->getDefinition('services_resetter');
 
         $this->assertEquals(
-            array(
-                new IteratorArgument(array(
+            [
+                new IteratorArgument([
                     'one' => new Reference('one', ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE),
                     'two' => new Reference('two', ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE),
-                )),
-                array(
+                ]),
+                [
                     'one' => 'reset',
                     'two' => 'clear',
-                ),
-            ),
+                ],
+            ],
             $definition->getArguments()
         );
     }
@@ -58,7 +58,7 @@ public function testMissingMethod()
         $container->register(ResettableService::class)
             ->addTag('kernel.reset');
         $container->register('services_resetter', ServicesResetter::class)
-            ->setArguments(array(null, array()));
+            ->setArguments([null, []]);
         $container->addCompilerPass(new ResettableServicePass());
 
         $container->compile();
@@ -68,7 +68,7 @@ public function testCompilerPassWithoutResetters()
     {
         $container = new ContainerBuilder();
         $container->register('services_resetter', ServicesResetter::class)
-            ->setArguments(array(null, array()));
+            ->setArguments([null, []]);
         $container->addCompilerPass(new ResettableServicePass());
 
         $container->compile();
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ServicesResetterTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ServicesResetterTest.php
index 47c62abd0d99..86f1abdb0529 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ServicesResetterTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ServicesResetterTest.php
@@ -26,13 +26,13 @@ protected function setUp()
 
     public function testResetServices()
     {
-        $resetter = new ServicesResetter(new \ArrayIterator(array(
+        $resetter = new ServicesResetter(new \ArrayIterator([
             'id1' => new ResettableService(),
             'id2' => new ClearableService(),
-        )), array(
+        ]), [
             'id1' => 'reset',
             'id2' => 'clear',
-        ));
+        ]);
 
         $resetter->reset();
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Event/FilterControllerArgumentsEventTest.php b/src/Symfony/Component/HttpKernel/Tests/Event/FilterControllerArgumentsEventTest.php
index f1e440b2fc71..abc51ac51e77 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Event/FilterControllerArgumentsEventTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Event/FilterControllerArgumentsEventTest.php
@@ -11,7 +11,7 @@ class FilterControllerArgumentsEventTest extends TestCase
 {
     public function testFilterControllerArgumentsEvent()
     {
-        $filterController = new FilterControllerArgumentsEvent(new TestHttpKernel(), function () {}, array('test'), new Request(), 1);
-        $this->assertEquals($filterController->getArguments(), array('test'));
+        $filterController = new FilterControllerArgumentsEvent(new TestHttpKernel(), function () {}, ['test'], new Request(), 1);
+        $this->assertEquals($filterController->getArguments(), ['test']);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/AddRequestFormatsListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/AddRequestFormatsListenerTest.php
index 3ffb9f3d632e..b4ea2f955bb5 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/AddRequestFormatsListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/AddRequestFormatsListenerTest.php
@@ -30,7 +30,7 @@ class AddRequestFormatsListenerTest extends TestCase
 
     protected function setUp()
     {
-        $this->listener = new AddRequestFormatsListener(array('csv' => array('text/csv', 'text/plain')));
+        $this->listener = new AddRequestFormatsListener(['csv' => ['text/csv', 'text/plain']]);
     }
 
     protected function tearDown()
@@ -46,7 +46,7 @@ public function testIsAnEventSubscriber()
     public function testRegisteredEvent()
     {
         $this->assertEquals(
-            array(KernelEvents::REQUEST => array('onKernelRequest', 1)),
+            [KernelEvents::REQUEST => ['onKernelRequest', 1]],
             AddRequestFormatsListener::getSubscribedEvents()
         );
     }
@@ -58,7 +58,7 @@ public function testSetAdditionalFormats()
 
         $request->expects($this->once())
             ->method('setFormat')
-            ->with('csv', array('text/csv', 'text/plain'));
+            ->with('csv', ['text/csv', 'text/plain']);
 
         $this->listener->onKernelRequest($event);
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/DebugHandlersListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/DebugHandlersListenerTest.php
index 9a9c17edab52..d9e261d35af5 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/DebugHandlersListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/DebugHandlersListenerTest.php
@@ -40,11 +40,11 @@ public function testConfigure()
         $listener = new DebugHandlersListener($userHandler, $logger);
         $xHandler = new ExceptionHandler();
         $eHandler = new ErrorHandler();
-        $eHandler->setExceptionHandler(array($xHandler, 'handle'));
+        $eHandler->setExceptionHandler([$xHandler, 'handle']);
 
         $exception = null;
-        set_error_handler(array($eHandler, 'handleError'));
-        set_exception_handler(array($eHandler, 'handleException'));
+        set_error_handler([$eHandler, 'handleError']);
+        set_exception_handler([$eHandler, 'handleException']);
         try {
             $listener->configure();
         } catch (\Exception $exception) {
@@ -58,10 +58,10 @@ public function testConfigure()
 
         $this->assertSame($userHandler, $xHandler->setHandler('var_dump'));
 
-        $loggers = $eHandler->setLoggers(array());
+        $loggers = $eHandler->setLoggers([]);
 
         $this->assertArrayHasKey(E_DEPRECATED, $loggers);
-        $this->assertSame(array($logger, LogLevel::INFO), $loggers[E_DEPRECATED]);
+        $this->assertSame([$logger, LogLevel::INFO], $loggers[E_DEPRECATED]);
     }
 
     public function testConfigureForHttpK
10000
ernelWithNoTerminateWithException()
@@ -75,7 +75,7 @@ public function testConfigureForHttpKernelWithNoTerminateWithException()
         );
 
         $exception = null;
-        $h = set_exception_handler(array($eHandler, 'handleException'));
+        $h = set_exception_handler([$eHandler, 'handleException']);
         try {
             $listener->configure($event);
         } catch (\Exception $exception) {
@@ -101,16 +101,16 @@ public function testConsoleEvent()
 
         $dispatcher->addSubscriber($listener);
 
-        $xListeners = array(
-            KernelEvents::REQUEST => array(array($listener, 'configure')),
-            ConsoleEvents::COMMAND => array(array($listener, 'configure')),
-        );
+        $xListeners = [
+            KernelEvents::REQUEST => [[$listener, 'configure']],
+            ConsoleEvents::COMMAND => [[$listener, 'configure']],
+        ];
         $this->assertSame($xListeners, $dispatcher->getListeners());
 
         $exception = null;
         $eHandler = new ErrorHandler();
-        set_error_handler(array($eHandler, 'handleError'));
-        set_exception_handler(array($eHandler, 'handleException'));
+        set_error_handler([$eHandler, 'handleError']);
+        set_exception_handler([$eHandler, 'handleException']);
         try {
             $dispatcher->dispatch(ConsoleEvents::COMMAND, $event);
         } catch (\Exception $exception) {
@@ -139,7 +139,7 @@ public function testReplaceExistingExceptionHandler()
         $eHandler->setExceptionHandler('var_dump');
 
         $exception = null;
-        set_exception_handler(array($eHandler, 'handleException'));
+        set_exception_handler([$eHandler, 'handleException']);
         try {
             $listener->configure();
         } catch (\Exception $exception) {
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/DumpListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/DumpListenerTest.php
index 509f443087eb..b86a7552f85e 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/DumpListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/DumpListenerTest.php
@@ -29,7 +29,7 @@ class DumpListenerTest extends TestCase
     public function testSubscribedEvents()
     {
         $this->assertSame(
-            array(ConsoleEvents::COMMAND => array('configure', 1024)),
+            [ConsoleEvents::COMMAND => ['configure', 1024]],
             DumpListener::getSubscribedEvents()
         );
     }
@@ -68,7 +68,7 @@ class MockCloner implements ClonerInterface
 {
     public function cloneVar($var)
     {
-        return new Data(array(array($var.'-')));
+        return new Data([[$var.'-']]);
     }
 }
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
index 0b73075e7b89..c4e8cd505cbf 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
@@ -94,7 +94,7 @@ public function testHandleWithLogger($event, $event2)
     public function provider()
     {
         if (!class_exists('Symfony\Component\HttpFoundation\Request')) {
-            return array(array(null, null));
+            return [[null, null]];
         }
 
         $request = new Request();
@@ -102,9 +102,9 @@ public function provider()
         $event = new GetResponseForExceptionEvent(new TestKernel(), $request, HttpKernelInterface::MASTER_REQUEST, $exception);
         $event2 = new GetResponseForExceptionEvent(new TestKernelThatThrowsException(), $request, HttpKernelInterface::MASTER_REQUEST, $exception);
 
-        return array(
-            array($event, $event2),
-        );
+        return [
+            [$event, $event2],
+        ];
     }
 
     public function testSubRequestFormat()
@@ -142,7 +142,7 @@ public function testCSPHeaderIsRemoved()
         $event = new GetResponseForExceptionEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST, new \Exception('foo'));
         $dispatcher->dispatch(KernelEvents::EXCEPTION, $event);
 
-        $response = new Response('', 200, array('content-security-policy' => "style-src 'self'"));
+        $response = new Response('', 200, ['content-security-policy' => "style-src 'self'"]);
         $this->assertTrue($response->headers->has('content-security-policy'));
 
         $event = new FilterResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST, $response);
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/FragmentListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/FragmentListenerTest.php
index edf0498265c8..6408b1b21c7e 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/FragmentListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/FragmentListenerTest.php
@@ -68,7 +68,7 @@ public function testAccessDeniedWithNonSafeMethods()
      */
     public function testAccessDeniedWithWrongSignature()
     {
-        $request = Request::create('http://example.com/_fragment', 'GET', array(), array(), array(), array('REMOTE_ADDR' => '10.0.0.1'));
+        $request = Request::create('http://example.com/_fragment', 'GET', [], [], [], ['REMOTE_ADDR' => '10.0.0.1']);
 
         $listener = new FragmentListener(new UriSigner('foo'));
         $event = $this->createGetResponseEvent($request);
@@ -79,14 +79,14 @@ public function testAccessDeniedWithWrongSignature()
     public function testWithSignature()
     {
         $signer = new UriSigner('foo');
-        $request = Request::create($signer->sign('http://example.com/_fragment?_path=foo%3Dbar%26_controller%3Dfoo'), 'GET', array(), array(), array(), array('REMOTE_ADDR' => '10.0.0.1'));
+        $request = Request::create($signer->sign('http://example.com/_fragment?_path=foo%3Dbar%26_controller%3Dfoo'), 'GET', [], [], [], ['REMOTE_ADDR' => '10.0.0.1']);
 
         $listener = new FragmentListener($signer);
         $event = $this->createGetResponseEvent($request);
 
         $listener->onKernelRequest($event);
 
-        $this->assertEquals(array('foo' => 'bar', '_controller' => 'foo'), $request->attributes->get('_route_params'));
+        $this->assertEquals(['foo' => 'bar', '_controller' => 'foo'], $request->attributes->get('_route_params'));
         $this->assertFalse($request->query->has('_path'));
     }
 
@@ -105,7 +105,7 @@ public function testRemovesPathWithControllerDefined()
     public function testRemovesPathWithControllerNotDefined()
     {
         $signer = new UriSigner('foo');
-        $request = Request::create($signer->sign('http://example.com/_fragment?_path=foo%3Dbar'), 'GET', array(), array(), array(), array('REMOTE_ADDR' => '10.0.0.1'));
+        $request = Request::create($signer->sign('http://example.com/_fragment?_path=foo%3Dbar'), 'GET', [], [], [], ['REMOTE_ADDR' => '10.0.0.1']);
 
         $listener = new FragmentListener($signer);
         $event = $this->createGetResponseEvent($request);
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/LocaleListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/LocaleListenerTest.php
index f442235ad048..1cf4b72c69d7 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/LocaleListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/LocaleListenerTest.php
@@ -54,7 +54,7 @@ public function testLocaleSetForRoutingContext()
         $context = $this->getMockBuilder('Symfony\Component\Routing\RequestContext')->getMock();
         $context->expects($this->once())->method('setParameter')->with('_locale', 'es');
 
-        $router = $this->getMockBuilder('Symfony\Component\Routing\Router')->setMethods(array('getContext'))->disableOriginalConstructor()->getMock();
+        $router = $this->getMockBuilder('Symfony\Component\Routing\Router')->setMethods(['getContext'])->disableOriginalConstructor()->getMock();
         $router->expects($this->once())->method('getContext')->will($this->returnValue($context));
 
         $request = Request::create('/');
@@ -70,7 +70,7 @@ public function testRouterResetWithParentRequestOnKernelFinishRequest()
         $context = $this->getMockBuilder('Symfony\Component\Routing\RequestContext')->getMock();
         $context->expects($this->once())->method('setParameter')->with('_locale', 'es');
 
-        $router = $this->getMockBuilder('Symfony\Component\Routing\Router')->setMethods(array('getContext'))->disableOriginalConstructor()->getMock();
+        $router = $this->getMockBuilder('Symfony\Component\Routing\Router')->setMethods(['getContext'])->disableOriginalConstructor()->getMock();
         $router->expects($this->once())->method('getContext')->will($this->returnValue($context));
 
         $parentRequest = Request::create('/');
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/ResponseListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/ResponseListenerTest.php
index 1d8960267dbe..aeab68f3e915 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/ResponseListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/ResponseListenerTest.php
@@ -30,7 +30,7 @@ protected function setUp()
     {
         $this->dispatcher = new EventDispatcher();
         $listener = new ResponseListener('UTF-8');
-        $this->dispatcher->addListener(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'));
+        $this->dispatcher->addListener(KernelEvents::RESPONSE, [$listener, 'onKernelResponse']);
 
         $this->kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
     }
@@ -54,7 +54,7 @@ public function testFilterDoesNothingForSubRequests()
     public function testFilterSetsNonDefaultCharsetIfNotOverridden()
     {
         $listener = new ResponseListener('ISO-8859-15');
-        $this->dispatcher->addListener(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'), 1);
+        $this->dispatcher->addListener(KernelEvents::RESPONSE, [$listener, 'onKernelResponse'], 1);
 
         $response = new Response('foo');
 
@@ -67,7 +67,7 @@ public function testFilterSetsNonDefaultCharsetIfNotOverridden()
     public function testFilterDoesNothingIfCharsetIsOverridden()
     {
         $listener = new ResponseListener('ISO-8859-15');
-        $this->dispatcher->addListener(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'), 1);
+        $this->dispatcher->addListener(KernelEvents::RESPONSE, [$listener, 'onKernelResponse'], 1);
 
         $response = new Response('foo');
         $response->setCharset('ISO-8859-1');
@@ -81,7 +81,7 @@ public function testFilterDoesNothingIfCharsetIsOverridden()
     public function testFiltersSetsNonDefaultCharsetIfNotOverriddenOnNonTextContentType()
     {
         $listener = new ResponseListener('ISO-8859-15');
-        $this->dispatcher->addListener(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'), 1);
+        $this->dispatcher->addListener(KernelEvents::RESPONSE, [$listener, 'onKernelResponse'], 1);
 
         $response = new Response('foo');
         $request = Request::create('/');
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/RouterListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/RouterListenerTest.php
index ecbce409fb64..218af8d36e29 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/RouterListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/RouterListenerTest.php
@@ -62,12 +62,12 @@ public function testPort($defaultHttpPort, $defaultHttpsPort, $uri, $expectedHtt
 
     public function getPortData()
     {
-        return array(
-            array(80, 443, 'http://localhost/', 80, 443),
-            array(80, 443, 'http://localhost:90/', 90, 443),
-            array(80, 443, 'https://localhost/', 80, 443),
-            array(80, 443, 'https://localhost:90/', 80, 90),
-        );
+        return [
+            [80, 443, 'http://localhost/', 80, 443],
+            [80, 443, 'http://localhost:90/', 90, 443],
+            [80, 443, 'https://localhost/', 80, 443],
+            [80, 443, 'https://localhost:90/', 80, 90],
+        ];
     }
 
     /**
@@ -102,7 +102,7 @@ public function testRequestMatcher()
         $requestMatcher->expects($this->once())
                        ->method('matchRequest')
                        ->with($this->isInstanceOf('Symfony\Component\HttpFoundation\Request'))
-                       ->will($this->returnValue(array()));
+                       ->will($this->returnValue([]));
 
         $listener = new RouterListener($requestMatcher, $this->requestStack, new RequestContext());
         $listener->onKernelRequest($event);
@@ -118,7 +118,7 @@ public function testSubRequestWithDifferentMethod()
         $requestMatcher->expects($this->any())
                        ->method('matchRequest')
                        ->with($this->isInstanceOf('Symfony\Component\HttpFoundation\Request'))
-                       ->will($this->returnValue(array()));
+                       ->will($this->returnValue([]));
 
         $context = new RequestContext();
 
@@ -159,10 +159,10 @@ public function testLoggingParameter($parameter, $log, $parameters)
 
     public function getLoggingParameterData()
     {
-        return array(
-            array(array('_route' => 'foo'), 'Matched route "{route}".', array('route' => 'foo', 'route_parameters' => array('_route' => 'foo'), 'request_uri' => 'http://localhost/', 'method' => 'GET')),
-            array(array(), 'Matched route "{route}".', array('route' => 'n/a', 'route_parameters' => array(), 'request_uri' => 'http://localhost/', 'method' => 'GET')),
-        );
+        return [
+            [['_route' => 'foo'], 'Matched route "{route}".', ['route' => 'foo', 'route_parameters' => ['_route' => 'foo'], 'request_uri' => 'http://localhost/', 'method' => 'GET']],
+            [[], 'Matched route "{route}".', ['route' => 'n/a', 'route_parameters' => [], 'request_uri' => 'http://localhost/', 'method' => 'GET']],
+        ];
     }
 
     public function testWithBadRequest()
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/SessionListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/SessionListenerTest.php
index 1b95d19f9c25..f0bac60505bc 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/SessionListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/SessionListenerTest.php
@@ -90,7 +90,7 @@ public function testSurrogateMasterRequestIsPublic()
 
         $request = new Request();
         $response = new Response();
-        $response->setCache(array('public' => true, 'max_age' => '30'));
+        $response->setCache(['public' => true, 'max_age' => '30']);
         $listener->onKernelRequest(new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST));
         $this->assertTrue($request->hasSession());
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/SurrogateListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/SurrogateListenerTest.php
index b955c07d4742..66e119f1239d 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/SurrogateListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/SurrogateListenerTest.php
@@ -30,7 +30,7 @@ public function testFilterDoesNothingForSubRequests()
         $response = new Response('foo <!-- bad ESI request: bad ESI request -->');
         $listener = new SurrogateListener(new Esi());
 
-        $dispatcher->addListener(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'));
+        $dispatcher->addListener(KernelEvents::RESPONSE, [$listener, 'onKernelResponse']);
         $event = new FilterResponseEvent($kernel, new Request(), HttpKernelInterface::SUB_REQUEST, $response);
         $dispatcher->dispatch(KernelEvents::RESPONSE, $event);
 
@@ -44,7 +44,7 @@ public function testFilterWhenThereIsSomeEsiIncludes()
         $response = new Response('foo <!-- bad ESI request: bad ESI request -->');
         $listener = new SurrogateListener(new Esi());
 
-        $dispatcher->addListener(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'));
+        $dispatcher->addListener(KernelEvents::RESPONSE, [$listener, 'onKernelResponse']);
         $event = new FilterResponseEvent($kernel, new Request(), HttpKernelInterface::MASTER_REQUEST, $response);
         $dispatcher->dispatch(KernelEvents::RESPONSE, $event);
 
@@ -58,7 +58,7 @@ public function testFilterWhenThereIsNoEsiIncludes()
         $response = new Response('foo');
         $listener = new SurrogateListener(new Esi());
 
-        $dispatcher->addListener(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'));
+        $dispatcher->addListener(KernelEvents::RESPONSE, [$listener, 'onKernelResponse']);
         $event = new FilterResponseEvent($kernel, new Request(), HttpKernelInterface::MASTER_REQUEST, $response);
         $dispatcher->dispatch(KernelEvents::RESPONSE, $event);
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/TestSessionListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/TestSessionListenerTest.php
index 0d0985ca5daf..f261f2ed15a6 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/TestSessionListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/TestSessionListenerTest.php
@@ -87,7 +87,7 @@ public function testEmptySessionDoesNotSendCookie()
 
         $response = $this->filterResponse(new Request(), HttpKernelInterface::MASTER_REQUEST);
 
-        $this->assertSame(array(), $response->headers->getCookies());
+        $this->assertSame([], $response->headers->getCookies());
     }
 
     public function testEmptySessionWithNewSessionIdDoesSendCookie()
@@ -97,7 +97,7 @@ public function testEmptySessionWithNewSessionIdDoesSendCookie()
         $this->fixSessionId('456');
 
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
-        $request = Request::create('/', 'GET', array(), array('MOCKSESSID' => '123'));
+        $request = Request::create('/', 'GET', [], ['MOCKSESSID' => '123']);
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
         $this->listener->onKernelRequest($event);
 
@@ -116,11 +116,11 @@ public function testSessionWithNewSessionIdAndNewCookieDoesNotSendAnotherCookie(
         $this->fixSessionId('456');
 
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
-        $request = Request::create('/', 'GET', array(), array('MOCKSESSID' => '123'));
+        $request = Request::create('/', 'GET', [], ['MOCKSESSID' => '123']);
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
         $this->listener->onKernelRequest($event);
 
-        $response = new Response('', 200, array('Set-Cookie' => $existing));
+        $response = new Response('', 200, ['Set-Cookie' => $existing]);
 
         $response = $this->filterResponse(new Request(), HttpKernelInterface::MASTER_REQUEST, $response);
 
@@ -129,11 +129,11 @@ public function testSessionWithNewSessionIdAndNewCookieDoesNotSendAnotherCookie(
 
     public function anotherCookieProvider()
     {
-        return array(
-            'same' => array('MOCKSESSID=789; path=/', array('MOCKSESSID=789; path=/')),
-            'different domain' => array('MOCKSESSID=789; path=/; domain=example.com', array('MOCKSESSID=789; path=/; domain=example.com', 'MOCKSESSID=456; path=/')),
-            'different path' => array('MOCKSESSID=789; path=/foo', array('MOCKSESSID=789; path=/foo', 'MOCKSESSID=456; path=/')),
-        );
+        return [
+            'same' => ['MOCKSESSID=789; path=/', ['MOCKSESSID=789; path=/']],
+            'different domain' => ['MOCKSESSID=789; path=/; domain=example.com', ['MOCKSESSID=789; path=/; domain=example.com', 'MOCKSESSID=456; path=/']],
+            'different path' => ['MOCKSESSID=789; path=/foo', ['MOCKSESSID=789; path=/foo', 'MOCKSESSID=456; path=/']],
+        ];
     }
 
     public function testUnstartedSessionIsNotSave()
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/ValidateRequestListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/ValidateRequestListenerTest.php
index bdab742ce182..fb7a4379bfa4 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/ValidateRequestListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/ValidateRequestListenerTest.php
@@ -23,7 +23,7 @@ class ValidateRequestListenerTest extends TestCase
 {
     protected function tearDown()
     {
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     /**
@@ -35,12 +35,12 @@ public function testListenerThrowsWhenMasterRequestHasInconsistentClientIps()
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
 
         $request = new Request();
-        $request->setTrustedProxies(array('1.1.1.1'), Request::HEADER_X_FORWARDED_FOR | Request::HEADER_FORWARDED);
+        $request->setTrustedProxies(['1.1.1.1'], Request::HEADER_X_FORWARDED_FOR | Request::HEADER_FORWARDED);
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $request->headers->set('FORWARDED', 'for=2.2.2.2');
         $request->headers->set('X_FORWARDED_FOR', '3.3.3.3');
 
-        $dispatcher->addListener(KernelEvents::REQUEST, array(new ValidateRequestListener(), 'onKernelRequest'));
+        $dispatcher->addListener(KernelEvents::REQUEST, [new ValidateRequestListener(), 'onKernelRequest']);
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
 
         $dispatcher->dispatch(KernelEvents::REQUEST, $event);
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/HttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/HttpExceptionTest.php
index b64773551eb3..f5fe97255bdb 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/HttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/HttpExceptionTest.php
@@ -9,22 +9,22 @@ class HttpExceptionTest extends TestCase
 {
     public function headerDataProvider()
     {
-        return array(
-            array(array('X-Test' => 'Test')),
-            array(array('X-Test' => 1)),
-            array(
-                array(
-                    array('X-Test' => 'Test'),
-                    array('X-Test-2' => 'Test-2'),
-                ),
-            ),
-        );
+        return [
+            [['X-Test' => 'Test']],
+            [['X-Test' => 1]],
+            [
+                [
+                    ['X-Test' => 'Test'],
+                    ['X-Test-2' => 'Test-2'],
+                ],
+            ],
+        ];
     }
 
     public function testHeadersDefault()
     {
         $exception = $this->createException();
-        $this->assertSame(array(), $exception->getHeaders());
+        $this->assertSame([], $exception->getHeaders());
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/MethodNotAllowedHttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/MethodNotAllowedHttpExceptionTest.php
index b5def13ce38d..31dbf2f036e1 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/MethodNotAllowedHttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/MethodNotAllowedHttpExceptionTest.php
@@ -8,8 +8,8 @@ class MethodNotAllowedHttpExceptionTest extends HttpExceptionTest
 {
     public function testHeadersDefault()
     {
-        $exception = new MethodNotAllowedHttpException(array('GET', 'PUT'));
-        $this->assertSame(array('Allow' => 'GET, PUT'), $exception->getHeaders());
+        $exception = new MethodNotAllowedHttpException(['GET', 'PUT']);
+        $this->assertSame(['Allow' => 'GET, PUT'], $exception->getHeaders());
     }
 
     /**
@@ -17,7 +17,7 @@ public function testHeadersDefault()
      */
     public function testHeadersSetter($headers)
     {
-        $exception = new MethodNotAllowedHttpException(array('GET'));
+        $exception = new MethodNotAllowedHttpException(['GET']);
         $exception->setHeaders($headers);
         $this->assertSame($headers, $exception->getHeaders());
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/ServiceUnavailableHttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/ServiceUnavailableHttpExceptionTest.php
index e41a23d4e771..cefde951ccfb 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/ServiceUnavailableHttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/ServiceUnavailableHttpExceptionTest.php
@@ -9,7 +9,7 @@ class ServiceUnavailableHttpExceptionTest extends HttpExceptionTest
     public function testHeadersDefaultRetryAfter()
     {
         $exception = new ServiceUnavailableHttpException(10);
-        $this->assertSame(array('Retry-After' => 10), $exception->getHeaders());
+        $this->assertSame(['Retry-After' => 10], $exception->getHeaders());
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/TooManyRequestsHttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/TooManyRequestsHttpExceptionTest.php
index 2079bb3380d2..73ee91a77d8f 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/TooManyRequestsHttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/TooManyRequestsHttpExceptionTest.php
@@ -9,7 +9,7 @@ class TooManyRequestsHttpExceptionTest extends HttpExceptionTest
     public function testHeadersDefaultRertyAfter()
     {
         $exception = new TooManyRequestsHttpException(10);
-        $this->assertSame(array('Retry-After' => 10), $exception->getHeaders());
+        $this->assertSame(['Retry-After' => 10], $exception->getHeaders());
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/UnauthorizedHttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/UnauthorizedHttpExceptionTest.php
index 37a0028dc825..a8cc19aef896 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/UnauthorizedHttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/UnauthorizedHttpExceptionTest.php
@@ -9,7 +9,7 @@ class UnauthorizedHttpExceptionTest extends HttpExceptionTest
     public function testHeadersDefault()
     {
         $exception = new UnauthorizedHttpException('Challenge');
-        $this->assertSame(array('WWW-Authenticate' => 'Challenge'), $exception->getHeaders());
+        $this->assertSame(['WWW-Authenticate' => 'Challenge'], $exception->getHeaders());
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/123/Kernel123.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/123/Kernel123.php
index d3a76684dfa2..70c4026f067d 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/123/Kernel123.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/123/Kernel123.php
@@ -18,7 +18,7 @@ class Kernel123 extends Kernel
 {
     public function registerBundles()
     {
-        return array();
+        return [];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/DataCollector/CloneVarDataCollector.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/DataCollector/CloneVarDataCollector.php
index 89dec36af411..4f5de182fd17 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/DataCollector/CloneVarDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/DataCollector/CloneVarDataCollector.php
@@ -31,7 +31,7 @@ public function collect(Request $request, Response $response, \Exception $except
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
     }
 
     public function getData()
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/KernelForTest.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/KernelForTest.php
index 9acee4cac553..88c34b023136 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/KernelForTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/KernelForTest.php
@@ -23,7 +23,7 @@ public function getBundleMap()
 
     public function registerBundles()
     {
-        return array();
+        return [];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/KernelWithoutBundles.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/KernelWithoutBundles.php
index cee1b09fb225..1f5a456061f2 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/KernelWithoutBundles.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/KernelWithoutBundles.php
@@ -19,7 +19,7 @@ class KernelWithoutBundles extends Kernel
 {
     public function registerBundles()
     {
-        return array();
+        return [];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/TestEventDispatcher.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/TestEventDispatcher.php
index ca2e6a693da6..dc9c9166f9f2 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/TestEventDispatcher.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/TestEventDispatcher.php
@@ -18,12 +18,12 @@ class TestEventDispatcher extends EventDispatcher implements TraceableEventDispa
 {
     public function getCalledListeners()
     {
-        return array('foo');
+        return ['foo'];
     }
 
     public function getNotCalledListeners()
     {
-        return array('bar');
+        return ['bar'];
     }
 
     public function reset()
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/EsiFragmentRendererTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/EsiFragmentRendererTest.php
index 51e5756203ee..52d8551965a0 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/EsiFragmentRendererTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/EsiFragmentRendererTest.php
@@ -34,7 +34,7 @@ public function testRenderFallbackWithObjectAttributesIsDeprecated()
     {
         $strategy = new EsiFragmentRenderer(new Esi(), $this->getInlineStrategy(true), new UriSigner('foo'));
         $request = Request::create('/');
-        $reference = new ControllerReference('main_controller', array('foo' => new \stdClass()), array());
+        $reference = new ControllerReference('main_controller', ['foo' => new \stdClass()], []);
         $strategy->render($reference, $request);
     }
 
@@ -42,7 +42,7 @@ public function testRenderFallbackWithScalarIsNotDeprecated()
     {
         $strategy = new EsiFragmentRenderer(new Esi(), $this->getInlineStrategy(true), new UriSigner('foo'));
         $request = Request::create('/');
-        $reference = new ControllerReference('main_controller', array('foo' => array(true)), array());
+        $reference = new ControllerReference('main_controller', ['foo' => [true]], []);
         $strategy->render($reference, $request);
     }
 
@@ -55,8 +55,8 @@ public function testRender()
         $request->headers->set('Surrogate-Capability', 'ESI/1.0');
 
         $this->assertEquals('<!-- bad ESI request: bad ESI request -->', $strategy->render('/', $request)->getContent());
-        $this->assertEquals("\n<!-- bad ESI request: bad ESI request -->", $strategy->render('/', $request, array('comment' => 'This is a comment'))->getContent());
-        $this->assertEquals('<!-- bad ESI request: bad ESI request -->', $strategy->render('/', $request, array('alt' => 'foo'))->getContent());
+        $this->assertEquals("\n<!-- bad ESI request: bad ESI request -->", $strategy->render('/', $request, ['comment' => 'This is a comment'])->getContent());
+        $this->assertEquals('<!-- bad ESI request: bad ESI request -->', $strategy->render('/', $request, ['alt' => 'foo'])->getContent());
     }
 
     public function testRenderControllerReference()
@@ -68,12 +68,12 @@ public function testRenderControllerReference()
         $request->setLocale('fr');
         $request->headers->set('Surrogate-Capability', 'ESI/1.0');
 
-        $reference = new ControllerReference('main_controller', array(), array());
-        $altReference = new ControllerReference('alt_controller', array(), array());
+        $reference = new ControllerReference('main_controller', [], []);
+        $altReference = new ControllerReference('alt_controller', [], []);
 
         $this->assertEquals(
             '<!-- bad ESI request: bad ESI request -->',
-            $strategy->render($reference, $request, array('alt' => $altReference))->getContent()
+            $strategy->render($reference, $request, ['alt' => $altReference])->getContent()
         );
     }
 
@@ -102,7 +102,7 @@ public function testRenderAltControllerReferenceWithoutSignerThrowsException()
         $request->setLocale('fr');
         $request->headers->set('Surrogate-Capability', 'ESI/1.0');
 
-        $strategy->render('/', $request, array('alt' => new ControllerReference('alt_controller')));
+        $strategy->render('/', $request, ['alt' => new ControllerReference('alt_controller')]);
     }
 
     private function getInlineStrategy($called = false)
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
index a296aa0e183c..8829393ea4e5 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
@@ -68,12 +68,12 @@ public function testDeliverWithUnsuccessfulResponse()
 
     public function testRender()
     {
-        $handler = $this->getHandler($this->returnValue(new Response('foo')), array('/', Request::create('/'), array('foo' => 'foo', 'ignore_errors' => true)));
+        $handler = $this->getHandler($this->returnValue(new Response('foo')), ['/', Request::create('/'), ['foo' => 'foo', 'ignore_errors' => true]]);
 
-        $this->assertEquals('foo', $handler->render('/', 'foo', array('foo' => 'foo')));
+        $this->assertEquals('foo', $handler->render('/', 'foo', ['foo' => 'foo']));
     }
 
-    protected function getHandler($returnValue, $arguments = array())
+    protected function getHandler($returnValue, $arguments = [])
     {
         $renderer = $this->getMockBuilder('Symfony\Component\HttpKernel\Fragment\FragmentRendererInterface')->getMock();
         $renderer
@@ -88,7 +88,7 @@ protected function getHandler($returnValue, $arguments = array())
         ;
 
         if ($arguments) {
-            \call_user_func_array(array($e, 'with'), $arguments);
+            \call_user_func_array([$e, 'with'], $arguments);
         }
 
         $handler = new FragmentHandler($this->requestStack);
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/HIncludeFragmentRendererTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/HIncludeFragmentRendererTest.php
index 68f8ded4e971..6125d95ff4ca 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/HIncludeFragmentRendererTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/HIncludeFragmentRendererTest.php
@@ -25,14 +25,14 @@ class HIncludeFragmentRendererTest extends TestCase
     public function testRenderExceptionWhenControllerAndNoSigner()
     {
         $strategy = new HIncludeFragmentRenderer();
-        $strategy->render(new ControllerReference('main_controller', array(), array()), Request::create('/'));
+        $strategy->render(new ControllerReference('main_controller', [], []), Request::create('/'));
     }
 
     public function testRenderWithControllerAndSigner()
     {
         $strategy = new HIncludeFragmentRenderer(null, new UriSigner('foo'));
 
-        $this->assertEquals('<hx:include src="/_fragment?_hash=BP%2BOzCD5MRUI%2BHJpgPDOmoju00FnzLhP3TGcSHbbBLs%3D&amp;_path=_format%3Dhtml%26_locale%3Den%26_controller%3Dmain_controller"></hx:include>', $strategy->render(new ControllerReference('main_controller', array(), array()), Request::create('/'))->getContent());
+        $this->assertEquals('<hx:include src="/_fragment?_hash=BP%2BOzCD5MRUI%2BHJpgPDOmoju00FnzLhP3TGcSHbbBLs%3D&amp;_path=_format%3Dhtml%26_locale%3Den%26_controller%3Dmain_controller"></hx:include>', $strategy->render(new ControllerReference('main_controller', [], []), Request::create('/'))->getContent());
     }
 
     public function testRenderWithUri()
@@ -48,30 +48,30 @@ public function testRenderWithDefault()
     {
         // only default
         $strategy = new HIncludeFragmentRenderer();
-        $this->assertEquals('<hx:include src="/foo">default</hx:include>', $strategy->render('/foo', Request::create('/'), array('default' => 'default'))->getContent());
+        $this->assertEquals('<hx:include src="/foo">default</hx:include>', $strategy->render('/foo', Request::create('/'), ['default' => 'default'])->getContent());
 
         // only global default
         $strategy = new HIncludeFragmentRenderer(null, null, 'global_default');
-        $this->assertEquals('<hx:include src="/foo">global_default</hx:include>', $strategy->render('/foo', Request::create('/'), array())->getContent());
+        $this->assertEquals('<hx:include src="/foo">global_default</hx:include>', $strategy->render('/foo', Request::create('/'), [])->getContent());
 
         // global default and default
         $strategy = new HIncludeFragmentRenderer(null, null, 'global_default');
-        $this->assertEquals('<hx:include src="/foo">default</hx:include>', $strategy->render('/foo', Request::create('/'), array('default' => 'default'))->getContent());
+        $this->assertEquals('<hx:include src="/foo">default</hx:include>', $strategy->render('/foo', Request::create('/'), ['default' => 'default'])->getContent());
     }
 
     public function testRenderWithAttributesOptions()
     {
         // with id
         $strategy = new HIncludeFragmentRenderer();
-        $this->assertEquals('<hx:include src="/foo" id="bar">default</hx:include>', $strategy->render('/foo', Request::create('/'), array('default' => 'default', 'id' => 'bar'))->getContent());
+        $this->assertEquals('<hx:include src="/foo" id="bar">default</hx:include>', $strategy->render('/foo', Request::create('/'), ['default' => 'default', 'id' => 'bar'])->getContent());
 
         // with attributes
         $strategy = new HIncludeFragmentRenderer();
-        $this->assertEquals('<hx:include src="/foo" p1="v1" p2="v2">default</hx:include>', $strategy->render('/foo', Request::create('/'), array('default' => 'default', 'attributes' => array('p1' => 'v1', 'p2' => 'v2')))->getContent());
+        $this->assertEquals('<hx:include src="/foo" p1="v1" p2="v2">default</hx:include>', $strategy->render('/foo', Request::create('/'), ['default' => 'default', 'attributes' => ['p1' => 'v1', 'p2' => 'v2']])->getContent());
 
         // with id & attributes
         $strategy = new HIncludeFragmentRenderer();
-        $this->assertEquals('<hx:include src="/foo" p1="v1" p2="v2" id="bar">default</hx:include>', $strategy->render('/foo', Request::create('/'), array('default' => 'default', 'id' => 'bar', 'attributes' => array('p1' => 'v1', 'p2' => 'v2')))->getContent());
+        $this->assertEquals('<hx:include src="/foo" p1="v1" p2="v2" id="bar">default</hx:include>', $strategy->render('/foo', Request::create('/'), ['default' => 'default', 'id' => 'bar', 'attributes' => ['p1' => 'v1', 'p2' => 'v2']])->getContent());
     }
 
     public function testRenderWithDefaultText()
@@ -84,7 +84,7 @@ public function testRenderWithDefaultText()
 
         // only default
         $strategy = new HIncludeFragmentRenderer($engine);
-        $this->assertEquals('<hx:include src="/foo">default</hx:include>', $strategy->render('/foo', Request::create('/'), array('default' => 'default'))->getContent());
+        $this->assertEquals('<hx:include src="/foo">default</hx:include>', $strategy->render('/foo', Request::create('/'), ['default' => 'default'])->getContent());
     }
 
     public function testRenderWithEngineAndDefaultText()
@@ -97,6 +97,6 @@ public function testRenderWithEngineAndDefaultText()
 
         // only default
         $strategy = new HIncludeFragmentRenderer($engine);
-        $this->assertEquals('<hx:include src="/foo">loading...</hx:include>', $strategy->render('/foo', Request::create('/'), array('default' => 'loading...'))->getContent());
+        $this->assertEquals('<hx:include src="/foo">loading...</hx:include>', $strategy->render('/foo', Request::create('/'), ['default' => 'loading...'])->getContent());
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
index 80f9cd2b53c9..11adf74c2931 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
@@ -36,7 +36,7 @@ public function testRenderWithControllerReference()
     {
         $strategy = new InlineFragmentRenderer($this->getKernel($this->returnValue(new Response('foo'))));
 
-        $this->assertEquals('foo', $strategy->render(new ControllerReference('main_controller', array(), array()), Request::create('/'))->getContent());
+        $this->assertEquals('foo', $strategy->render(new ControllerReference('main_controller', [], []), Request::create('/'))->getContent());
     }
 
     public function testRenderWithObjectsAsAttributes()
@@ -44,15 +44,15 @@ public function testRenderWithObjectsAsAttributes()
         $object = new \stdClass();
 
         $subRequest = Request::create('/_fragment?_path=_format%3Dhtml%26_locale%3Den%26_controller%3Dmain_controller');
-        $subRequest->attributes->replace(array('object' => $object, '_format' => 'html', '_controller' => 'main_controller', '_locale' => 'en'));
-        $subRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
-        $subRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $subRequest->attributes->replace(['object' => $object, '_format' => 'html', '_controller' => 'main_controller', '_locale' => 'en']);
+        $subRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
+        $subRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $subRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         $subRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($subRequest));
 
-        $this->assertSame('foo', $strategy->render(new ControllerReference('main_controller', array('object' => $object), array()), Request::create('/'))->getContent());
+        $this->assertSame('foo', $strategy->render(new ControllerReference('main_controller', ['object' => $object], []), Request::create('/'))->getContent());
     }
 
     /**
@@ -60,7 +60,7 @@ public function testRenderWithObjectsAsAttributes()
      */
     public function testRenderWithObjectsAsAttributesPassedAsObjectsInTheControllerLegacy()
     {
-        $resolver = $this->getMockBuilder('Symfony\\Component\\HttpKernel\\Controller\\ControllerResolver')->setMethods(array('getController'))->getMock();
+        $resolver = $this->getMockBuilder('Symfony\\Component\\HttpKernel\\Controller\\ControllerResolver')->setMethods(['getController'])->getMock();
         $resolver
             ->expects($this->once())
             ->method('getController')
@@ -72,7 +72,7 @@ public function testRenderWithObjectsAsAttributesPassedAsObjectsInTheControllerL
         $kernel = new HttpKernel(new EventDispatcher(), $resolver, new RequestStack());
         $renderer = new InlineFragmentRenderer($kernel);
 
-        $response = $renderer->render(new ControllerReference('main_controller', array('object' => new \stdClass(), 'object1' => new Bar()), array()), Request::create('/'));
+        $response = $renderer->render(new ControllerReference('main_controller', ['object' => new \stdClass(), 'object1' => new Bar()], []), Request::create('/'));
         $this->assertEquals('bar', $response->getContent());
     }
 
@@ -93,22 +93,22 @@ public function testRenderWithObjectsAsAttributesPassedAsObjectsInTheController(
         $kernel = new HttpKernel(new EventDispatcher(), $resolver, new RequestStack(), new ArgumentResolver());
         $renderer = new InlineFragmentRenderer($kernel);
 
-        $response = $renderer->render(new ControllerReference('main_controller', array('object' => new \stdClass(), 'object1' => new Bar()), array()), Request::create('/'));
+        $response = $renderer->render(new ControllerReference('main_controller', ['object' => new \stdClass(), 'object1' => new Bar()], []), Request::create('/'));
         $this->assertEquals('bar', $response->getContent());
     }
 
     public function testRenderWithTrustedHeaderDisabled()
     {
-        Request::setTrustedProxies(array(), 0);
+        Request::setTrustedProxies([], 0);
 
         $expectedSubRequest = Request::create('/');
-        $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
+        $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
         $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
         $this->assertSame('foo', $strategy->render('/', Request::create('/'))->getContent());
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     /**
@@ -131,7 +131,7 @@ public function testRenderExceptionIgnoreErrors()
 
         $strategy = new InlineFragmentRenderer($this->getKernel($this->throwException(new \RuntimeException('foo'))), $dispatcher);
 
-        $this->assertEmpty($strategy->render('/', Request::create('/'), array('ignore_errors' => true))->getContent());
+        $this->assertEmpty($strategy->render('/', Request::create('/'), ['ignore_errors' => true])->getContent());
     }
 
     public function testRenderExceptionIgnoreErrorsWithAlt()
@@ -141,7 +141,7 @@ public function testRenderExceptionIgnoreErrorsWithAlt()
             $this->returnValue(new Response('bar'))
         )));
 
-        $this->assertEquals('bar', $strategy->render('/', Request::create('/'), array('ignore_errors' => true, 'alt' => '/foo'))->getContent());
+        $this->assertEquals('bar', $strategy->render('/', Request::create('/'), ['ignore_errors' => true, 'alt' => '/foo'])->getContent());
     }
 
     private function getKernel($returnValue)
@@ -173,7 +173,7 @@ public function testExceptionInSubRequestsDoesNotMangleOutputBuffers()
         $argumentResolver
             ->expects($this->once())
             ->method('getArguments')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $kernel = new HttpKernel(new EventDispatcher(), $controllerResolver, new RequestStack(), $argumentResolver);
@@ -184,7 +184,7 @@ public function testExceptionInSubRequestsDoesNotMangleOutputBuffers()
         echo 'Foo';
 
         // simulate a sub-request with output buffering and an exception
-        $renderer->render('/', Request::create('/'), array('ignore_errors' => true));
+        $renderer->render('/', Request::create('/'), ['ignore_errors' => true]);
 
         $this->assertEquals('Foo', ob_get_clean());
     }
@@ -195,10 +195,10 @@ public function testLocaleAndFormatAreIsKeptInSubrequest()
         $expectedSubRequest->attributes->set('_format', 'foo');
         $expectedSubRequest->setLocale('fr');
         if (Request::HEADER_X_FORWARDED_FOR & Request::getTrustedHeaderSet()) {
-            $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
+            $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
             $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         }
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
@@ -215,10 +215,10 @@ public function testESIHeaderIsKeptInSubrequest()
         $expectedSubRequest->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
 
         if (Request::HEADER_X_FORWARDED_FOR & Request::getTrustedHeaderSet()) {
-            $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
+            $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
             $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         }
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
@@ -230,35 +230,35 @@ public function testESIHeaderIsKeptInSubrequest()
 
     public function testESIHeaderIsKeptInSubrequestWithTrustedHeaderDisabled()
     {
-        Request::setTrustedProxies(array(), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies([], Request::HEADER_FORWARDED);
 
         $this->testESIHeaderIsKeptInSubrequest();
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     public function testHeadersPossiblyResultingIn304AreNotAssignedToSubrequest()
     {
         $expectedSubRequest = Request::create('/');
-        $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
-        $request = Request::create('/', 'GET', array(), array(), array(), array('HTTP_IF_MODIFIED_SINCE' => 'Fri, 01 Jan 2016 00:00:00 GMT', 'HTTP_IF_NONE_MATCH' => '*'));
+        $request = Request::create('/', 'GET', [], [], [], ['HTTP_IF_MODIFIED_SINCE' => 'Fri, 01 Jan 2016 00:00:00 GMT', 'HTTP_IF_NONE_MATCH' => '*']);
         $strategy->render('/', $request);
     }
 
     public function testFirstTrustedProxyIsSetAsRemote()
     {
-        Request::setTrustedProxies(array('1.1.1.1'), -1);
+        Request::setTrustedProxies(['1.1.1.1'], -1);
 
         $expectedSubRequest = Request::create('/');
         $expectedSubRequest->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
         $expectedSubRequest->server->set('REMOTE_ADDR', '127.0.0.1');
-        $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
@@ -268,7 +268,7 @@ public function testFirstTrustedProxyIsSetAsRemote()
         $request->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
         $strategy->render('/', $request);
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     public function testIpAddressOfRangedTrustedProxyIsSetAsRemote()
@@ -276,12 +276,12 @@ public function testIpAddressOfRangedTrustedProxyIsSetAsRemote()
         $expectedSubRequest = Request::create('/');
         $expectedSubRequest->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
         $expectedSubRequest->server->set('REMOTE_ADDR', '127.0.0.1');
-        $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
-        Request::setTrustedProxies(array('1.1.1.1/24'), -1);
+        Request::setTrustedProxies(['1.1.1.1/24'], -1);
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
 
@@ -289,7 +289,7 @@ public function testIpAddressOfRangedTrustedProxyIsSetAsRemote()
         $request->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
         $strategy->render('/', $request);
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/RoutableFragmentRendererTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/RoutableFragmentRendererTest.php
index 3a040dedd6e5..c03e8c4a9233 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/RoutableFragmentRendererTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/RoutableFragmentRendererTest.php
@@ -35,14 +35,14 @@ public function testGenerateAbsoluteFragmentUri($uri, $controller)
 
     public function getGenerateFragmentUriData()
     {
-        return array(
-            array('/_fragment?_path=_format%3Dhtml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', array(), array())),
-            array('/_fragment?_path=_format%3Dxml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', array('_format' => 'xml'), array())),
-            array('/_fragment?_path=foo%3Dfoo%26_format%3Djson%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', array('foo' => 'foo', '_format' => 'json'), array())),
-            array('/_fragment?bar=bar&_path=foo%3Dfoo%26_format%3Dhtml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', array('foo' => 'foo'), array('bar' => 'bar'))),
-            array('/_fragment?foo=foo&_path=_format%3Dhtml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', array(), array('foo' => 'foo'))),
-            array('/_fragment?_path=foo%255B0%255D%3Dfoo%26foo%255B1%255D%3Dbar%26_format%3Dhtml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', array('foo' => array('foo', 'bar')), array())),
-        );
+        return [
+            ['/_fragment?_path=_format%3Dhtml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', [], [])],
+            ['/_fragment?_path=_format%3Dxml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', ['_format' => 'xml'], [])],
+            ['/_fragment?_path=foo%3Dfoo%26_format%3Djson%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', ['foo' => 'foo', '_format' => 'json'], [])],
+            ['/_fragment?bar=bar&_path=foo%3Dfoo%26_format%3Dhtml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', ['foo' => 'foo'], ['bar' => 'bar'])],
+            ['/_fragment?foo=foo&_path=_format%3Dhtml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', [], ['foo' => 'foo'])],
+            ['/_fragment?_path=foo%255B0%255D%3Dfoo%26foo%255B1%255D%3Dbar%26_format%3Dhtml%26_locale%3Den%26_controller%3Dcontroller', new ControllerReference('controller', ['foo' => ['foo', 'bar']], [])],
+        ];
     }
 
     public function testGenerateFragmentUriWithARequest()
@@ -50,7 +50,7 @@ public function testGenerateFragmentUriWithARequest()
         $request = Request::create('/');
         $request->attributes->set('_format', 'json');
         $request->setLocale('fr');
-        $controller = new ControllerReference('controller', array(), array());
+        $controller = new ControllerReference('controller', [], []);
 
         $this->assertEquals('/_fragment?_path=_format%3Djson%26_locale%3Dfr%26_controller%3Dcontroller', $this->callGenerateFragmentUriMethod($controller, $request));
     }
@@ -66,10 +66,10 @@ public function testGenerateFragmentUriWithNonScalar($controller)
 
     public function getGenerateFragmentUriDataWithNonScalar()
     {
-        return array(
-            array(new ControllerReference('controller', array('foo' => new Foo(), 'bar' => 'bar'), array())),
-            array(new ControllerReference('controller', array('foo' => array('foo' => 'foo'), 'bar' => array('bar' => new Foo())), array())),
-        );
+        return [
+            [new ControllerReference('controller', ['foo' => new Foo(), 'bar' => 'bar'], [])],
+            [new ControllerReference('controller', ['foo' => ['foo' => 'foo'], 'bar' => ['bar' => new Foo()]], [])],
+        ];
     }
 
     private function callGenerateFragmentUriMethod(ControllerReference $reference, Request $request, $absolute = false)
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/SsiFragmentRendererTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/SsiFragmentRendererTest.php
index ff98fd2616ee..b2181725edfd 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/SsiFragmentRendererTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/SsiFragmentRendererTest.php
@@ -35,7 +35,7 @@ public function testRender()
         $request->headers->set('Surrogate-Capability', 'SSI/1.0');
 
         $this->assertEquals('<!--#include virtual="/" -->', $strategy->render('/', $request)->getContent());
-        $this->assertEquals('<!--#include virtual="/" -->', $strategy->render('/', $request, array('comment' => 'This is a comment'))->getContent(), 'Strategy options should not impact the ssi include tag');
+        $this->assertEquals('<!--#include virtual="/" -->', $strategy->render('/', $request, ['comment' => 'This is a comment'])->getContent(), 'Strategy options should not impact the ssi include tag');
     }
 
     public function testRenderControllerReference()
@@ -47,12 +47,12 @@ public function testRenderControllerReference()
         $request->setLocale('fr');
         $request->headers->set('Surrogate-Capability', 'SSI/1.0');
 
-        $reference = new ControllerReference('main_controller', array(), array());
-        $altReference = new ControllerReference('alt_controller', array(), array());
+        $reference = new ControllerReference('main_controller', [], []);
+        $altReference = new ControllerReference('alt_controller', [], []);
 
         $this->assertEquals(
             '<!--#include virtual="/_fragment?_hash=Jz1P8NErmhKTeI6onI1EdAXTB85359MY3RIk5mSJ60w%3D&_path=_format%3Dhtml%26_locale%3Dfr%26_controller%3Dmain_controller" -->',
-            $strategy->render($reference, $request, array('alt' => $altReference))->getContent()
+            $strategy->render($reference, $request, ['alt' => $altReference])->getContent()
         );
     }
 
@@ -81,7 +81,7 @@ public function testRenderAltControllerReferenceWithoutSignerThrowsException()
         $request->setLocale('fr');
         $request->headers->set('Surrogate-Capability', 'SSI/1.0');
 
-        $strategy->render('/', $request, array('alt' => new ControllerReference('alt_controller')));
+        $strategy->render('/', $request, ['alt' => new ControllerReference('alt_controller')]);
     }
 
     private function getInlineStrategy($called = false)
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/EsiTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/EsiTest.php
index 863ad76147fc..ccc3eecfaf8c 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/EsiTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/EsiTest.php
@@ -220,13 +220,13 @@ public function testHandleWhenResponseIsNot200AndAltIsPresent()
         $response1 = new Response('foo');
         $response1->setStatusCode(404);
         $response2 = new Response('bar');
-        $cache = $this->getCache(Request::create('/'), array($response1, $response2));
+        $cache = $this->getCache(Request::create('/'), [$response1, $response2]);
         $this->assertEquals('bar', $esi->handle($cache, '/', '/alt', false));
     }
 
     protected function getCache($request, $response)
     {
-        $cache = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpCache\HttpCache')->setMethods(array('getRequest', 'handle'))->disableOriginalConstructor()->getMock();
+        $cache = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpCache\HttpCache')->setMethods(['getRequest', 'handle'])->disableOriginalConstructor()->getMock();
         $cache->expects($this->any())
               ->method('getRequest')
               ->will($this->returnValue($request))
@@ -234,7 +234,7 @@ protected function getCache($request, $response)
         if (\is_array($response)) {
             $cache->expects($this->any())
                   ->method('handle')
-                  ->will(\call_user_func_array(array($this, 'onConsecutiveCalls'), $response))
+                  ->will(\call_user_func_array([$this, 'onConsecutiveCalls'], $response))
             ;
         } else {
             $cache->expects($this->any())
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTest.php
index a41d8665083c..7b3cac78c734 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTest.php
@@ -39,7 +39,7 @@ public function testTerminateDelegatesTerminationOnlyForTerminableInterface()
         // implements TerminableInterface
         $kernelMock = $this->getMockBuilder('Symfony\\Component\\HttpKernel\\Kernel')
             ->disableOriginalConstructor()
-            ->setMethods(array('terminate', 'registerBundles', 'registerContainerConfiguration'))
+            ->setMethods(['terminate', 'registerBundles', 'registerContainerConfiguration'])
             ->getMock();
 
         $kernelMock->expects($this->once())
@@ -61,7 +61,7 @@ public function testPassesOnNonGetHeadRequests()
 
     public function testInvalidatesOnPostPutDeleteRequests()
     {
-        foreach (array('post', 'put', 'delete') as $method) {
+        foreach (['post', 'put', 'delete'] as $method) {
             $this->setNextResponse(200);
             $this->request($method, '/');
 
@@ -74,8 +74,8 @@ public function testInvalidatesOnPostPutDeleteRequests()
 
     public function testDoesNotCacheWithAuthorizationRequestHeaderAndNonPublicResponse()
     {
-        $this->setNextResponse(200, array('ETag' => '"Foo"'));
-        $this->request('GET', '/', array('HTTP_AUTHORIZATION' => 'basic foobarbaz'));
+        $this->setNextResponse(200, ['ETag' => '"Foo"']);
+        $this->request('GET', '/', ['HTTP_AUTHORIZATION' => 'basic foobarbaz']);
 
         $this->assertHttpKernelIsCalled();
         $this->assertResponseOk();
@@ -88,8 +88,8 @@ public function testDoesNotCacheWithAuthorizationRequestHeaderAndNonPublicRespon
 
     public function testDoesCacheWithAuthorizationRequestHeaderAndPublicResponse()
     {
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'ETag' => '"Foo"'));
-        $this->request('GET', '/', array('HTTP_AUTHORIZATION' => 'basic foobarbaz'));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'ETag' => '"Foo"']);
+        $this->request('GET', '/', ['HTTP_AUTHORIZATION' => 'basic foobarbaz']);
 
         $this->assertHttpKernelIsCalled();
         $this->assertResponseOk();
@@ -101,8 +101,8 @@ public function testDoesCacheWithAuthorizationRequestHeaderAndPublicResponse()
 
     public function testDoesNotCacheWithCookieHeaderAndNonPublicResponse()
     {
-        $this->setNextResponse(200, array('ETag' => '"Foo"'));
-        $this->request('GET', '/', array(), array('foo' => 'bar'));
+        $this->setNextResponse(200, ['ETag' => '"Foo"']);
+        $this->request('GET', '/', [], ['foo' => 'bar']);
 
         $this->assertHttpKernelIsCalled();
         $this->assertResponseOk();
@@ -115,7 +115,7 @@ public fu
D7AE
nction testDoesNotCacheWithCookieHeaderAndNonPublicResponse()
     public function testDoesNotCacheRequestsWithACookieHeader()
     {
         $this->setNextResponse(200);
-        $this->request('GET', '/', array(), array('foo' => 'bar'));
+        $this->request('GET', '/', [], ['foo' => 'bar']);
 
         $this->assertHttpKernelIsCalled();
         $this->assertResponseOk();
@@ -129,8 +129,8 @@ public function testRespondsWith304WhenIfModifiedSinceMatchesLastModified()
     {
         $time = \DateTime::createFromFormat('U', time());
 
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'Last-Modified' => $time->format(DATE_RFC2822), 'Content-Type' => 'text/plain'), 'Hello World');
-        $this->request('GET', '/', array('HTTP_IF_MODIFIED_SINCE' => $time->format(DATE_RFC2822)));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'Last-Modified' => $time->format(DATE_RFC2822), 'Content-Type' => 'text/plain'], 'Hello World');
+        $this->request('GET', '/', ['HTTP_IF_MODIFIED_SINCE' => $time->format(DATE_RFC2822)]);
 
         $this->assertHttpKernelIsCalled();
         $this->assertEquals(304, $this->response->getStatusCode());
@@ -142,8 +142,8 @@ public function testRespondsWith304WhenIfModifiedSinceMatchesLastModified()
 
     public function testRespondsWith304WhenIfNoneMatchMatchesETag()
     {
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'ETag' => '12345', 'Content-Type' => 'text/plain'), 'Hello World');
-        $this->request('GET', '/', array('HTTP_IF_NONE_MATCH' => '12345'));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'ETag' => '12345', 'Content-Type' => 'text/plain'], 'Hello World');
+        $this->request('GET', '/', ['HTTP_IF_NONE_MATCH' => '12345']);
 
         $this->assertHttpKernelIsCalled();
         $this->assertEquals(304, $this->response->getStatusCode());
@@ -158,7 +158,7 @@ public function testRespondsWith304OnlyIfIfNoneMatchAndIfModifiedSinceBothMatch(
     {
         $time = \DateTime::createFromFormat('U', time());
 
-        $this->setNextResponse(200, array(), '', function ($request, $response) use ($time) {
+        $this->setNextResponse(200, [], '', function ($request, $response) use ($time) {
             $response->setStatusCode(200);
             $response->headers->set('ETag', '12345');
             $response->headers->set('Last-Modified', $time->format(DATE_RFC2822));
@@ -168,17 +168,17 @@ public function testRespondsWith304OnlyIfIfNoneMatchAndIfModifiedSinceBothMatch(
 
         // only ETag matches
         $t = \DateTime::createFromFormat('U', time() - 3600);
-        $this->request('GET', '/', array('HTTP_IF_NONE_MATCH' => '12345', 'HTTP_IF_MODIFIED_SINCE' => $t->format(DATE_RFC2822)));
+        $this->request('GET', '/', ['HTTP_IF_NONE_MATCH' => '12345', 'HTTP_IF_MODIFIED_SINCE' => $t->format(DATE_RFC2822)]);
         $this->assertHttpKernelIsCalled();
         $this->assertEquals(200, $this->response->getStatusCode());
 
         // only Last-Modified matches
-        $this->request('GET', '/', array('HTTP_IF_NONE_MATCH' => '1234', 'HTTP_IF_MODIFIED_SINCE' => $time->format(DATE_RFC2822)));
+        $this->request('GET', '/', ['HTTP_IF_NONE_MATCH' => '1234', 'HTTP_IF_MODIFIED_SINCE' => $time->format(DATE_RFC2822)]);
         $this->assertHttpKernelIsCalled();
         $this->assertEquals(200, $this->response->getStatusCode());
 
         // Both matches
-        $this->request('GET', '/', array('HTTP_IF_NONE_MATCH' => '12345', 'HTTP_IF_MODIFIED_SINCE' => $time->format(DATE_RFC2822)));
+        $this->request('GET', '/', ['HTTP_IF_NONE_MATCH' => '12345', 'HTTP_IF_MODIFIED_SINCE' => $time->format(DATE_RFC2822)]);
         $this->assertHttpKernelIsCalled();
         $this->assertEquals(304, $this->response->getStatusCode());
     }
@@ -187,10 +187,10 @@ public function testIncrementsMaxAgeWhenNoDateIsSpecifiedEventWhenUsingETag()
     {
         $this->setNextResponse(
             200,
-            array(
+            [
                 'ETag' => '1234',
                 'Cache-Control' => 'public, s-maxage=60',
-            )
+            ]
         );
 
         $this->request('GET', '/');
@@ -210,7 +210,7 @@ public function testIncrementsMaxAgeWhenNoDateIsSpecifiedEventWhenUsingETag()
 
     public function testValidatesPrivateResponsesCachedOnTheClient()
     {
-        $this->setNextResponse(200, array(), '', function ($request, $response) {
+        $this->setNextResponse(200, [], '', function ($request, $response) {
             $etags = preg_split('/\s*,\s*/', $request->headers->get('IF_NONE_MATCH'));
             if ($request->cookies->has('authenticated')) {
                 $response->headers->set('Cache-Control', 'private, no-store');
@@ -243,7 +243,7 @@ public function testValidatesPrivateResponsesCachedOnTheClient()
         $this->assertTraceContains('miss');
         $this->assertTraceContains('store');
 
-        $this->request('GET', '/', array(), array('authenticated' => ''));
+        $this->request('GET', '/', [], ['authenticated' => '']);
         $this->assertHttpKernelIsCalled();
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('"private tag"', $this->response->headers->get('ETag'));
@@ -257,8 +257,8 @@ public function testStoresResponsesWhenNoCacheRequestDirectivePresent()
     {
         $time = \DateTime::createFromFormat('U', time() + 5);
 
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'Expires' => $time->format(DATE_RFC2822)));
-        $this->request('GET', '/', array('HTTP_CACHE_CONTROL' => 'no-cache'));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'Expires' => $time->format(DATE_RFC2822)]);
+        $this->request('GET', '/', ['HTTP_CACHE_CONTROL' => 'no-cache']);
 
         $this->assertHttpKernelIsCalled();
         $this->assertTraceContains('store');
@@ -269,7 +269,7 @@ public function testReloadsResponsesWhenCacheHitsButNoCacheRequestDirectivePrese
     {
         $count = 0;
 
-        $this->setNextResponse(200, array('Cache-Control' => 'public, max-age=10000'), '', function ($request, $response) use (&$count) {
+        $this->setNextResponse(200, ['Cache-Control' => 'public, max-age=10000'], '', function ($request, $response) use (&$count) {
             ++$count;
             $response->setContent(1 == $count ? 'Hello World' : 'Goodbye World');
         });
@@ -285,7 +285,7 @@ public function testReloadsResponsesWhenCacheHitsButNoCacheRequestDirectivePrese
         $this->assertTraceContains('fresh');
 
         $this->cacheConfig['allow_reload'] = true;
-        $this->request('GET', '/', array('HTTP_CACHE_CONTROL' => 'no-cache'));
+        $this->request('GET', '/', ['HTTP_CACHE_CONTROL' => 'no-cache']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Goodbye World', $this->response->getContent());
         $this->assertTraceContains('reload');
@@ -296,7 +296,7 @@ public function testDoesNotReloadResponsesWhenAllowReloadIsSetFalseDefault()
     {
         $count = 0;
 
-        $this->setNextResponse(200, array('Cache-Control' => 'public, max-age=10000'), '', function ($request, $response) use (&$count) {
+        $this->setNextResponse(200, ['Cache-Control' => 'public, max-age=10000'], '', function ($request, $response) use (&$count) {
             ++$count;
             $response->setContent(1 == $count ? 'Hello World' : 'Goodbye World');
         });
@@ -312,12 +312,12 @@ public function testDoesNotReloadResponsesWhenAllowReloadIsSetFalseDefault()
         $this->assertTraceContains('fresh');
 
         $this->cacheConfig['allow_reload'] = false;
-        $this->request('GET', '/', array('HTTP_CACHE_CONTROL' => 'no-cache'));
+        $this->request('GET', '/', ['HTTP_CACHE_CONTROL' => 'no-cache']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Hello World', $this->response->getContent());
         $this->assertTraceNotContains('reload');
 
-        $this->request('GET', '/', array('HTTP_CACHE_CONTROL' => 'no-cache'));
+        $this->request('GET', '/', ['HTTP_CACHE_CONTROL' => 'no-cache']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Hello World', $this->response->getContent());
         $this->assertTraceNotContains('reload');
@@ -327,7 +327,7 @@ public function testRevalidatesFreshCacheEntryWhenMaxAgeRequestDirectiveIsExceed
     {
         $count = 0;
 
-        $this->setNextResponse(200, array(), '', function ($request, $response) use (&$count) {
+        $this->setNextResponse(200, [], '', function ($request, $response) use (&$count) {
             ++$count;
             $response->headers->set('Cache-Control', 'public, max-age=10000');
             $response->setETag($count);
@@ -345,7 +345,7 @@ public function testRevalidatesFreshCacheEntryWhenMaxAgeRequestDirectiveIsExceed
         $this->assertTraceContains('fresh');
 
         $this->cacheConfig['allow_revalidate'] = true;
-        $this->request('GET', '/', array('HTTP_CACHE_CONTROL' => 'max-age=0'));
+        $this->request('GET', '/', ['HTTP_CACHE_CONTROL' => 'max-age=0']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Goodbye World', $this->response->getContent());
         $this->assertTraceContains('stale');
@@ -357,7 +357,7 @@ public function testDoesNotRevalidateFreshCacheEntryWhenEnableRevalidateOptionIs
     {
         $count = 0;
 
-        $this->setNextResponse(200, array(), '', function ($request, $response) use (&$count) {
+        $this->setNextResponse(200, [], '', function ($request, $response) use (&$count) {
             ++$count;
             $response->headers->set('Cache-Control', 'public, max-age=10000');
             $response->setETag($count);
@@ -375,14 +375,14 @@ public function testDoesNotRevalidateFreshCacheEntryWhenEnableRevalidateOptionIs
         $this->assertTraceContains('fresh');
 
         $this->cacheConfig['allow_revalidate'] = false;
-        $this->request('GET', '/', array('HTTP_CACHE_CONTROL' => 'max-age=0'));
+        $this->request('GET', '/', ['HTTP_CACHE_CONTROL' => 'max-age=0']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Hello World', $this->response->getContent());
         $this->assertTraceNotContains('stale');
         $this->assertTraceNotContains('invalid');
         $this->assertTraceContains('fresh');
 
-        $this->request('GET', '/', array('HTTP_CACHE_CONTROL' => 'max-age=0'));
+        $this->request('GET', '/', ['HTTP_CACHE_CONTROL' => 'max-age=0']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Hello World', $this->response->getContent());
         $this->assertTraceNotContains('stale');
@@ -393,7 +393,7 @@ public function testDoesNotRevalidateFreshCacheEntryWhenEnableRevalidateOptionIs
     public function testFetchesResponseFromBackendWhenCacheMisses()
     {
         $time = \DateTime::createFromFormat('U', time() + 5);
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'Expires' => $time->format(DATE_RFC2822)));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'Expires' => $time->format(DATE_RFC2822)]);
 
         $this->request('GET', '/');
         $this->assertEquals(200, $this->response->getStatusCode());
@@ -405,7 +405,7 @@ public function testDoesNotCacheSomeStatusCodeResponses()
     {
         foreach (array_merge(range(201, 202), range(204, 206), range(303, 305), range(400, 403), range(405, 409), range(411, 417), range(500, 505)) as $code) {
             $time = \DateTime::createFromFormat('U', time() + 5);
-            $this->setNextResponse($code, array('Expires' => $time->format(DATE_RFC2822)));
+            $this->setNextResponse($code, ['Expires' => $time->format(DATE_RFC2822)]);
 
             $this->request('GET', '/');
             $this->assertEquals($code, $this->response->getStatusCode());
@@ -417,7 +417,7 @@ public function testDoesNotCacheSomeStatusCodeResponses()
     public function testDoesNotCacheResponsesWithExplicitNoStoreDirective()
     {
         $time = \DateTime::createFromFormat('U', time() + 5);
-        $this->setNextResponse(200, array('Expires' => $time->format(DATE_RFC2822), 'Cache-Control' => 'no-store'));
+        $this->setNextResponse(200, ['Expires' => $time->format(DATE_RFC2822), 'Cache-Control' => 'no-store']);
 
         $this->request('GET', '/');
         $this->assertTraceNotContains('store');
@@ -436,7 +436,7 @@ public function testDoesNotCacheResponsesWithoutFreshnessInformationOrAValidator
     public function testCachesResponsesWithExplicitNoCacheDirective()
     {
         $time = \DateTime::createFromFormat('U', time() + 5);
-        $this->setNextResponse(200, array('Expires' => $time->format(DATE_RFC2822), 'Cache-Control' => 'public, no-cache'));
+        $this->setNextResponse(200, ['Expires' => $time->format(DATE_RFC2822), 'Cache-Control' => 'public, no-cache']);
 
         $this->request('GET', '/');
         $this->assertTraceContains('store');
@@ -446,7 +446,7 @@ public function testCachesResponsesWithExplicitNoCacheDirective()
     public function testCachesResponsesWithAnExpirationHeader()
     {
         $time = \DateTime::createFromFormat('U', time() + 5);
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'Expires' => $time->format(DATE_RFC2822)));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'Expires' => $time->format(DATE_RFC2822)]);
 
         $this->request('GET', '/');
         $this->assertEquals(200, $this->response->getStatusCode());
@@ -462,7 +462,7 @@ public function testCachesResponsesWithAnExpirationHeader()
 
     public function testCachesResponsesWithAMaxAgeDirective()
     {
-        $this->setNextResponse(200, array('Cache-Control' => 'public, max-age=5'));
+        $this->setNextResponse(200, ['Cache-Control' => 'public, max-age=5']);
 
         $this->request('GET', '/');
         $this->assertEquals(200, $this->response->getStatusCode());
@@ -478,7 +478,7 @@ public function testCachesResponsesWithAMaxAgeDirective()
 
     public function testCachesResponsesWithASMaxAgeDirective()
     {
-        $this->setNextResponse(200, array('Cache-Control' => 's-maxage=5'));
+        $this->setNextResponse(200, ['Cache-Control' => 's-maxage=5']);
 
         $this->request('GET', '/');
         $this->assertEquals(200, $this->response->getStatusCode());
@@ -495,7 +495,7 @@ public function testCachesResponsesWithASMaxAgeDirective()
     public function testCachesResponsesWithALastModifiedValidatorButNoFreshnessInformation()
     {
         $time = \DateTime::createFromFormat('U', time());
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'Last-Modified' => $time->format(DATE_RFC2822)));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'Last-Modified' => $time->format(DATE_RFC2822)]);
 
         $this->request('GET', '/');
         $this->assertEquals(200, $this->response->getStatusCode());
@@ -506,7 +506,7 @@ public function testCachesResponsesWithALastModifiedValidatorButNoFreshnessInfor
 
     public function testCachesResponsesWithAnETagValidatorButNoFreshnessInformation()
     {
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'ETag' => '"123456"'));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'ETag' => '"123456"']);
 
         $this->request('GET', '/');
         $this->assertEquals(200, $this->response->getStatusCode());
@@ -519,7 +519,7 @@ public function testHitsCachedResponsesWithExpiresHeader()
     {
         $time1 = \DateTime::createFromFormat('U', time() - 5);
         $time2 = \DateTime::createFromFormat('U', time() + 5);
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'Date' => $time1->format(DATE_RFC2822), 'Expires' => $time2->format(DATE_RFC2822)));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'Date' => $time1->format(DATE_RFC2822), 'Expires' => $time2->format(DATE_RFC2822)]);
 
         $this->request('GET', '/');
         $this->assertHttpKernelIsCalled();
@@ -543,7 +543,7 @@ public function testHitsCachedResponsesWithExpiresHeader()
     public function testHitsCachedResponseWithMaxAgeDirective()
     {
         $time = \DateTime::createFromFormat('U', time() - 5);
-        $this->setNextResponse(200, array('Date' => $time->format(DATE_RFC2822), 'Cache-Control' => 'public, max-age=10'));
+        $this->setNextResponse(200, ['Date' => $time->format(DATE_RFC2822), 'Cache-Control' => 'public, max-age=10']);
 
         $this->request('GET', '/');
         $this->assertHttpKernelIsCalled();
@@ -573,7 +573,7 @@ public function testDegradationWhenCacheLocked()
         $this->cacheConfig['stale_while_revalidate'] = 10;
 
         // The prescence of Last-Modified makes this cacheable (because Response::isValidateable() then).
-        $this->setNextResponse(200, array('Cache-Control' => 'public, s-maxage=5', 'Last-Modified' => 'some while ago'), 'Old response');
+        $this->setNextResponse(200, ['Cache-Control' => 'public, s-maxage=5', 'Last-Modified' => 'some while ago'], 'Old response');
         $this->request('GET', '/'); // warm the cache
 
         // Now, lock the cache
@@ -607,7 +607,7 @@ public function testDegradationWhenCacheLocked()
     public function testHitsCachedResponseWithSMaxAgeDirective()
     {
         $time = \DateTime::createFromFormat('U', time() - 5);
-        $this->setNextResponse(200, array('Date' => $time->format(DATE_RFC2822), 'Cache-Control' => 's-maxage=10, max-age=0'));
+        $this->setNextResponse(200, ['Date' => $time->format(DATE_RFC2822), 'Cache-Control' => 's-maxage=10, max-age=0']);
 
         $this->request('GET', '/');
         $this->assertHttpKernelIsCalled();
@@ -752,7 +752,7 @@ public function testAssignsDefaultTtlWhenResponseHasNoFreshnessInformationAndAft
 
     public function testDoesNotAssignDefaultTtlWhenResponseHasMustRevalidateDirective()
     {
-        $this->setNextResponse(200, array('Cache-Control' => 'must-revalidate'));
+        $this->setNextResponse(200, ['Cache-Control' => 'must-revalidate']);
 
         $this->cacheConfig['default_ttl'] = 10;
         $this->request('GET', '/');
@@ -767,7 +767,7 @@ public function testDoesNotAssignDefaultTtlWhenResponseHasMustRevalidateDirectiv
     public function testFetchesFullResponseWhenCacheStaleAndNoValidatorsPresent()
     {
         $time = \DateTime::createFromFormat('U', time() + 5);
-        $this->setNextResponse(200, array('Cache-Control' => 'public', 'Expires' => $time->format(DATE_RFC2822)));
+        $this->setNextResponse(200, ['Cache-Control' => 'public', 'Expires' => $time->format(DATE_RFC2822)]);
 
         // build initial request
         $this->request('GET', '/');
@@ -807,7 +807,7 @@ public function testFetchesFullResponseWhenCacheStaleAndNoValidatorsPresent()
     public function testValidatesCachedResponsesWithLastModifiedAndNoFreshnessInformation()
     {
         $time = \DateTime::createFromFormat('U', time());
-        $this->setNextResponse(200, array(), 'Hello World', function ($request, $response) use ($time) {
+        $this->setNextResponse(200, [], 'Hello World', function ($request, $response) use ($time) {
             $response->headers->set('Cache-Control', 'public');
             $response->headers->set('Last-Modified', $time->format(DATE_RFC2822));
             if ($time->format(DATE_RFC2822) == $request->headers->get('IF_MODIFIED_SINCE')) {
@@ -845,7 +845,7 @@ public function testValidatesCachedResponsesUseSameHttpMethod()
     {
         $test = $this;
 
-        $this->setNextResponse(200, array(), 'Hello World', function ($request, $response) use ($test) {
+        $this->setNextResponse(200, [], 'Hello World', function ($request, $response) use ($test) {
             $test->assertSame('OPTIONS', $request->getMethod());
         });
 
@@ -858,7 +858,7 @@ public function testValidatesCachedResponsesUseSameHttpMethod()
 
     public function testValidatesCachedResponsesWithETagAndNoFreshnessInformation()
     {
-        $this->setNextResponse(200, array(), 'Hello World', function ($request, $response) {
+        $this->setNextResponse(200, [], 'Hello World', function ($request, $response) {
             $response->headers->set('Cache-Control', 'public');
             $response->headers->set('ETag', '"12345"');
             if ($response->getETag() == $request->headers->get('IF_NONE_MATCH')) {
@@ -895,7 +895,7 @@ public function testServesResponseWhileFreshAndRevalidatesWithLastModifiedInform
     {
         $time = \DateTime::createFromFormat('U', time());
 
-        $this->setNextResponse(200, array(), 'Hello World', function (Request $request, Response $response) use ($time) {
+        $this->setNextResponse(200, [], 'Hello World', function (Request $request, Response $response) use ($time) {
             $response->setSharedMaxAge(10);
             $response->headers->set('Last-Modified', $time->format(DATE_RFC2822));
         });
@@ -913,7 +913,7 @@ public function testServesResponseWhileFreshAndRevalidatesWithLastModifiedInform
 
         sleep(15); // expire the cache
 
-        $this->setNextResponse(304, array(), '', function (Request $request, Response $response) use ($time) {
+        $this->setNextResponse(304, [], '', function (Request $request, Response $response) use ($time) {
             $this->assertEquals($time->format(DATE_RFC2822), $request->headers->get('IF_MODIFIED_SINCE'));
         });
 
@@ -929,7 +929,7 @@ public function testReplacesCachedResponsesWhenValidationResultsInNon304Response
     {
         $time = \DateTime::createFromFormat('U', time());
         $count = 0;
-        $this->setNextResponse(200, array(), 'Hello World', function ($request, $response) use ($time, &$count) {
+        $this->setNextResponse(200, [], 'Hello World', function ($request, $response) use ($time, &$count) {
             $response->headers->set('Last-Modified', $time->format(DATE_RFC2822));
             $response->headers->set('Cache-Control', 'public');
             switch (++$count) {
@@ -966,20 +966,20 @@ public function testReplacesCachedResponsesWhenValidationResultsInNon304Response
 
     public function testPassesHeadRequestsThroughDirectlyOnPass()
     {
-        $this->setNextResponse(200, array(), 'Hello World', function ($request, $response) {
+        $this->setNextResponse(200, [], 'Hello World', function ($request, $response) {
             $response->setContent('');
             $response->setStatusCode(200);
             $this->assertEquals('HEAD', $request->getMethod());
         });
 
-        $this->request('HEAD', '/', array('HTTP_EXPECT' => 'something ...'));
+        $this->request('HEAD', '/', ['HTTP_EXPECT' => 'something ...']);
         $this->assertHttpKernelIsCalled();
         $this->assertEquals('', $this->response->getContent());
     }
 
     public function testUsesCacheToRespondToHeadRequestsWhenFresh()
     {
-        $this->setNextResponse(200, array(), 'Hello World', function ($request, $response) {
+        $this->setNextResponse(200, [], 'Hello World', function ($request, $response) {
             $response->headers->set('Cache-Control', 'public, max-age=10');
             $response->setContent('Hello World');
             $response->setStatusCode(200);
@@ -1000,7 +1000,7 @@ public function testUsesCacheToRespondToHeadRequestsWhenFresh()
     public function testSendsNoContentWhenFresh()
     {
         $time = \DateTime::createFromFormat('U', time());
-        $this->setNextResponse(200, array(), 'Hello World', function ($request, $response) use ($time) {
+        $this->setNextResponse(200, [], 'Hello World', function ($request, $response) use ($time) {
             $response->headers->set('Cache-Control', 'public, max-age=10');
             $response->headers->set('Last-Modified', $time->format(DATE_RFC2822));
         });
@@ -1009,7 +1009,7 @@ public function testSendsNoContentWhenFresh()
         $this->assertHttpKernelIsCalled();
         $this->assertEquals('Hello World', $this->response->getContent());
 
-        $this->request('GET', '/', array('HTTP_IF_MODIFIED_SINCE' => $time->format(DATE_RFC2822)));
+        $this->request('GET', '/', ['HTTP_IF_MODIFIED_SINCE' => $time->format(DATE_RFC2822)]);
         $this->assertHttpKernelIsNotCalled();
         $this->assertEquals(304, $this->response->getStatusCode());
         $this->assertEquals('', $this->response->getContent());
@@ -1017,7 +1017,7 @@ public function testSendsNoContentWhenFresh()
 
     public function testInvalidatesCachedResponsesOnPost()
     {
-        $this->setNextResponse(200, array(), 'Hello World', function ($request, $response) {
+        $this->setNextResponse(200, [], 'Hello World', function ($request, $response) {
             if ('GET' == $request->getMethod()) {
                 $response->setStatusCode(200);
                 $response->headers->set('Cache-Control', 'public, max-age=500');
@@ -1066,20 +1066,20 @@ public function testInvalidatesCachedResponsesOnPost()
     public function testServesFromCacheWhenHeadersMatch()
     {
         $count = 0;
-        $this->setNextResponse(200, array('Cache-Control' => 'max-age=10000'), '', function ($request, $response) use (&$count) {
+        $this->setNextResponse(200, ['Cache-Control' => 'max-age=10000'], '', function ($request, $response) use (&$count) {
             $response->headers->set('Vary', 'Accept User-Agent Foo');
             $response->headers->set('Cache-Control', 'public, max-age=10');
             $response->headers->set('X-Response-Count', ++$count);
             $response->setContent($request->headers->get('USER_AGENT'));
         });
 
-        $this->request('GET', '/', array('HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/1.0'));
+        $this->request('GET', '/', ['HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/1.0']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Bob/1.0', $this->response->getContent());
         $this->assertTraceContains('miss');
         $this->assertTraceContains('store');
 
-        $this->request('GET', '/', array('HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/1.0'));
+        $this->request('GET', '/', ['HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/1.0']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Bob/1.0', $this->response->getContent());
         $this->assertTraceContains('fresh');
@@ -1090,36 +1090,36 @@ public function testServesFromCacheWhenHeadersMatch()
     public function testStoresMultipleResponsesWhenHeadersDiffer()
     {
         $count = 0;
-        $this->setNextResponse(200, array('Cache-Control' => 'max-age=10000'), '', function ($request, $response) use (&$count) {
+        $this->setNextResponse(200, ['Cache-Control' => 'max-age=10000'], '', function ($request, $response) use (&$count) {
             $response->headers->set('Vary', 'Accept User-Agent Foo');
             $response->headers->set('Cache-Control', 'public, max-age=10');
             $response->headers->set('X-Response-Count', ++$count);
             $response->setContent($request->headers->get('USER_AGENT'));
         });
 
-        $this->request('GET', '/', array('HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/1.0'));
+        $this->request('GET', '/', ['HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/1.0']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertEquals('Bob/1.0', $this->response->getContent());
         $this->assertEquals(1, $this->response->headers->get('X-Response-Count'));
 
-        $this->request('GET', '/', array('HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/2.0'));
+        $this->request('GET', '/', ['HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/2.0']);
         $this->assertEquals(200, $this->response->getStatusCode());
         $this->assertTraceContains('miss');
         $this->assertTraceContains('store');
         $this->assertEquals('Bob/2.0', $this->response->getContent());
         $this->assertEquals(2, $this->response->headers->get('X-Response-Count'));
 
-        $this->request('GET', '/', array('HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/1.0'));
+        $this->request('GET', '/', ['HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/1.0']);
         $this->assertTraceContains('fresh');
         $this->assertEquals('Bob/1.0', $this->response->getContent());
         $this->assertEquals(1, $this->response->headers->get('X-Response-Count'));
 
-        $this->request('GET', '/', array('HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/2.0'));
+        $this->request('GET', '/', ['HTTP_ACCEPT' => 'text/html', 'HTTP_USER_AGENT' => 'Bob/2.0']);
         $this->assertTraceContains('fresh');
         $this->assertEquals('Bob/2.0', $this->response->getContent());
         $this->assertEquals(2, $this->response->headers->get('X-Response-Count'));
 
-        $this->request('GET', '/', array('HTTP_USER_AGENT' => 'Bob/2.0'));
+        $this->request('GET', '/', ['HTTP_USER_AGENT' => 'Bob/2.0']);
         $this->assertTraceContains('miss');
         $this->assertEquals('Bob/2.0', $this->response->getContent());
         $this->assertEquals(3, $this->response->headers->get('X-Response-Count'));
@@ -1141,7 +1141,7 @@ public function testShouldCatchExceptionsWhenReloadingAndNoCacheRequest()
 
         $this->setNextResponse();
         $this->cacheConfig['allow_reload'] = true;
-        $this->request('GET', '/', array(), array(), false, array('Pragma' => 'no-cache'));
+        $this->request('GET', '/', [], [], false, ['Pragma' => 'no-cache']);
 
         $this->assertExceptionsAreCaught();
     }
@@ -1158,30 +1158,30 @@ public function testShouldNotCatchExceptions()
 
     public function testEsiCacheSendsTheLowestTtl()
     {
-        $responses = array(
-            array(
+        $responses = [
+            [
                 'status' => 200,
                 'body' => '<!-- bad ESI request: bad ESI request --> <!-- bad ESI request: bad ESI request -->',
-                'headers' => array(
+                'headers' => [
                     'Cache-Control' => 's-maxage=300',
                     'Surrogate-Control' => 'content="ESI/1.0"',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'status' => 200,
                 'body' => 'Hello World!',
-                'headers' => array('Cache-Control' => 's-maxage=200'),
-            ),
-            array(
+                'headers' => ['Cache-Control' => 's-maxage=200'],
+            ],
+            [
                 'status' => 200,
                 'body' => 'My name is Bobby.',
-                'headers' => array('Cache-Control' => 's-maxage=100'),
-            ),
-        );
+                'headers' => ['Cache-Control' => 's-maxage=100'],
+            ],
+        ];
 
         $this->setNextResponses($responses);
 
-        $this->request('GET', '/', array(), array(), true);
+        $this->request('GET', '/', [], [], true);
         $this->assertEquals('Hello World! My name is Bobby.', $this->response->getContent());
 
         $this->assertEquals(100, $this->response->getTtl());
@@ -1189,25 +1189,25 @@ public function testEsiCacheSendsTheLowestTtl()
 
     public function testEsiCacheSendsTheLowestTtlForHeadRequests()
     {
-        $responses = array(
-            array(
+        $responses = [
+            [
                 'status' => 200,
                 'body' => 'I am a long-lived master response, but I embed a short-lived resource: <!-- bad ESI request: bad ESI request -->',
-                'headers' => array(
+                'headers' => [
                     'Cache-Control' => 's-maxage=300',
                     'Surrogate-Control' => 'content="ESI/1.0"',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'status' => 200,
                 'body' => 'I am a short-lived resource',
-                'headers' => array('Cache-Control' => 's-maxage=100'),
-            ),
-        );
+                'headers' => ['Cache-Control' => 's-maxage=100'],
+            ],
+        ];
 
         $this->setNextResponses($responses);
 
-        $this->request('HEAD', '/', array(), array(), true);
+        $this->request('HEAD', '/', [], [], true);
 
         $this->assertEmpty($this->response->getContent());
         $this->assertEquals(100, $this->response->getTtl());
@@ -1215,30 +1215,30 @@ public function testEsiCacheSendsTheLowestTtlForHeadRequests()
 
     public function testEsiCacheForceValidation()
     {
-        $responses = array(
-            array(
+        $responses = [
+            [
                 'status' => 200,
                 'body' => '<!-- bad ESI request: bad ESI request --> <!-- bad ESI request: bad ESI request -->',
-                'headers' => array(
+                'headers' => [
                     'Cache-Control' => 's-maxage=300',
                     'Surrogate-Control' => 'content="ESI/1.0"',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'status' => 200,
                 'body' => 'Hello World!',
-                'headers' => array('ETag' => 'foobar'),
-            ),
-            array(
+                'headers' => ['ETag' => 'foobar'],
+            ],
+            [
                 'status' => 200,
                 'body' => 'My name is Bobby.',
-                'headers' => array('Cache-Control' => 's-maxage=100'),
-            ),
-        );
+                'headers' => ['Cache-Control' => 's-maxage=100'],
+            ],
+        ];
 
         $this->setNextResponses($responses);
 
-        $this->request('GET', '/', array(), array(), true);
+        $this->request('GET', '/', [], [], true);
         $this->assertEquals('Hello World! My name is Bobby.', $this->response->getContent());
         $this->assertNull($this->response->getTtl());
         $this->assertTrue($this->response->mustRevalidate());
@@ -1248,25 +1248,25 @@ public function testEsiCacheForceValidation()
 
     public function testEsiCacheForceValidationForHeadRequests()
     {
-        $responses = array(
-            array(
+        $responses = [
+            [
                 'status' => 200,
                 'body' => 'I am the master response and use expiration caching, but I embed another resource: <!-- bad ESI request: bad ESI request -->',
-                'headers' => array(
+                'headers' => [
                     'Cache-Control' => 's-maxage=300',
                     'Surrogate-Control' => 'content="ESI/1.0"',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'status' => 200,
                 'body' => 'I am the embedded resource and use validation caching',
-                'headers' => array('ETag' => 'foobar'),
-            ),
-        );
+                'headers' => ['ETag' => 'foobar'],
+            ],
+        ];
 
         $this->setNextResponses($responses);
 
-        $this->request('HEAD', '/', array(), array(), true);
+        $this->request('HEAD', '/', [], [], true);
 
         // The response has been assembled from expiration and validation based resources
         // This can neither be cached nor revalidated, so it should be private/no cache
@@ -1279,50 +1279,50 @@ public function testEsiCacheForceValidationForHeadRequests()
 
     public function testEsiRecalculateContentLengthHeader()
     {
-        $responses = array(
-            array(
+        $responses = [
+            [
                 'status' => 200,
                 'body' => '<!-- bad ESI request: bad ESI request -->',
-                'headers' => array(
+                'headers' => [
                     'Content-Length' => 26,
                     'Surrogate-Control' => 'content="ESI/1.0"',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'status' => 200,
                 'body' => 'Hello World!',
-                'headers' => array(),
-            ),
-        );
+                'headers' => [],
+            ],
+        ];
 
         $this->setNextResponses($responses);
 
-        $this->request('GET', '/', array(), array(), true);
+        $this->request('GET', '/', [], [], true);
         $this->assertEquals('Hello World!', $this->response->getContent());
         $this->assertEquals(12, $this->response->headers->get('Content-Length'));
     }
 
     public function testEsiRecalculateContentLengthHeaderForHeadRequest()
     {
-        $responses = array(
-            array(
+        $responses = [
+            [
                 'status' => 200,
                 'body' => '<!-- bad ESI request: bad ESI request -->',
-                'headers' => array(
+                'headers' => [
                     'Content-Length' => 26,
                     'Surrogate-Control' => 'content="ESI/1.0"',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'status' => 200,
                 'body' => 'Hello World!',
-                'headers' => array(),
-            ),
-        );
+                'headers' => [],
+            ],
+        ];
 
         $this->setNextResponses($responses);
 
-        $this->request('HEAD', '/', array(), array(), true);
+        $this->request('HEAD', '/', [], [], true);
 
         // https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13
         // "The Content-Length entity-header field indicates the size of the entity-body,
@@ -1336,7 +1336,7 @@ public function testEsiRecalculateContentLengthHeaderForHeadRequest()
     public function testClientIpIsAlwaysLocalhostForForwardedRequests()
     {
         $this->setNextResponse();
-        $this->request('GET', '/', array('REMOTE_ADDR' => '10.0.0.1'));
+        $this->request('GET', '/', ['REMOTE_ADDR' => '10.0.0.1']);
 
         $this->kernel->assert(function ($backendRequest) {
             $this->assertSame('127.0.0.1', $backendRequest->server->get('REMOTE_ADDR'));
@@ -1351,25 +1351,25 @@ public function testHttpCacheIsSetAsATrustedProxy(array $existing)
         Request::setTrustedProxies($existing, Request::HEADER_X_FORWARDED_ALL);
 
         $this->setNextResponse();
-        $this->request('GET', '/', array('REMOTE_ADDR' => '10.0.0.1'));
+        $this->request('GET', '/', ['REMOTE_ADDR' => '10.0.0.1']);
         $this->assertSame($existing, Request::getTrustedProxies());
 
-        $existing = array_unique(array_merge($existing, array('127.0.0.1')));
+        $existing = array_unique(array_merge($existing, ['127.0.0.1']));
         $this->kernel->assert(function ($backendRequest) use ($existing) {
             $this->assertSame($existing, Request::getTrustedProxies());
             $this->assertsame('10.0.0.1', $backendRequest->getClientIp());
         });
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     public function getTrustedProxyData()
     {
-        return array(
-            array(array()),
-            array(array('10.0.0.2')),
-            array(array('10.0.0.2', '127.0.0.1')),
-        );
+        return [
+            [[]],
+            [['10.0.0.2']],
+            [['10.0.0.2', '127.0.0.1']],
+        ];
     }
 
     /**
@@ -1378,7 +1378,7 @@ public function getTrustedProxyData()
     public function testForwarderHeaderForForwardedRequests($forwarded, $expected)
     {
         $this->setNextResponse();
-        $server = array('REMOTE_ADDR' => '10.0.0.1');
+        $server = ['REMOTE_ADDR' => '10.0.0.1'];
         if (null !== $forwarded) {
             Request::setTrustedProxies($server, -1);
             $server['HTTP_FORWARDED'] = $forwarded;
@@ -1389,42 +1389,42 @@ public function testForwarderHeaderForForwardedRequests($forwarded, $expected)
             $this->assertSame($expected, $backendRequest->headers->get('Forwarded'));
         });
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     public function getForwardedData()
     {
-        return array(
-            array(null, 'for="10.0.0.1";host="localhost";proto=http'),
-            array('for=10.0.0.2', 'for="10.0.0.2";host="localhost";proto=http, for="10.0.0.1"'),
-            array('for=10.0.0.2, for=10.0.0.3', 'for="10.0.0.2";host="localhost";proto=http, for="10.0.0.3", for="10.0.0.1"'),
-        );
+        return [
+            [null, 'for="10.0.0.1";host="localhost";proto=http'],
+            ['for=10.0.0.2', 'for="10.0.0.2";host="localhost";proto=http, for="10.0.0.1"'],
+            ['for=10.0.0.2, for=10.0.0.3', 'for="10.0.0.2";host="localhost";proto=http, for="10.0.0.3", for="10.0.0.1"'],
+        ];
     }
 
     public function testEsiCacheRemoveValidationHeadersIfEmbeddedResponses()
     {
         $time = \DateTime::createFromFormat('U', time());
 
-        $responses = array(
-            array(
+        $responses = [
+            [
                 'status' => 200,
                 'body' => '<!-- bad ESI request: bad ESI request -->',
-                'headers' => array(
+                'headers' => [
                     'Surrogate-Control' => 'content="ESI/1.0"',
                     'ETag' => 'hey',
                     'Last-Modified' => $time->format(DATE_RFC2822),
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'status' => 200,
                 'body' => 'Hey!',
-                'headers' => array(),
-            ),
-        );
+                'headers' => [],
+            ],
+        ];
 
         $this->setNextResponses($responses);
 
-        $this->request('GET', '/', array(), array(), true);
+        $this->request('GET', '/', [], [], true);
         $this->assertNull($this->response->getETag());
         $this->assertNull($this->response->getLastModified());
     }
@@ -1433,26 +1433,26 @@ public function testEsiCacheRemoveValidationHeadersIfEmbeddedResponsesAndHeadReq
     {
         $time = \DateTime::createFromFormat('U', time());
 
-        $responses = array(
-            array(
+        $responses = [
+            [
                 'status' => 200,
                 'body' => '<!-- bad ESI request: bad ESI request -->',
-                'headers' => array(
+                'headers' => [
                     'Surrogate-Control' => 'content="ESI/1.0"',
                     'ETag' => 'hey',
                     'Last-Modified' => $time->format(DATE_RFC2822),
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'status' => 200,
                 'body' => 'Hey!',
-                'headers' => array(),
-            ),
-        );
+                'headers' => [],
+            ],
+        ];
 
         $this->setNextResponses($responses);
 
-        $this->request('HEAD', '/', array(), array(), true);
+        $this->request('HEAD', '/', [], [], true);
         $this->assertEmpty($this->response->getContent());
         $this->assertNull($this->response->getETag());
         $this->assertNull($this->response->getLastModified());
@@ -1460,11 +1460,11 @@ public function testEsiCacheRemoveValidationHeadersIfEmbeddedResponsesAndHeadReq
 
     public function testDoesNotCacheOptionsRequest()
     {
-        $this->setNextResponse(200, array('Cache-Control' => 'public, s-maxage=60'), 'get');
+        $this->setNextResponse(200, ['Cache-Control' => 'public, s-maxage=60'], 'get');
         $this->request('GET', '/');
         $this->assertHttpKernelIsCalled();
 
-        $this->setNextResponse(200, array('Cache-Control' => 'public, s-maxage=60'), 'options');
+        $this->setNextResponse(200, ['Cache-Control' => 'public, s-maxage=60'], 'options');
         $this->request('OPTIONS', '/');
         $this->assertHttpKernelIsCalled();
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTestCase.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTestCase.php
index b3aa2be2f0bc..1eb461744726 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTestCase.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTestCase.php
@@ -41,12 +41,12 @@ protected function setUp()
 
         $this->cache = null;
         $this->esi = null;
-        $this->caches = array();
-        $this->cacheConfig = array();
+        $this->caches = [];
+        $this->cacheConfig = [];
 
         $this->request = null;
         $this->response = null;
-        $this->responses = array();
+        $this->responses = [];
 
         $this->catch = false;
 
@@ -112,7 +112,7 @@ public function assertExceptionsAreNotCaught()
         $this->assertFalse($this->kernel->isCatchingExceptions());
     }
 
-    public function request($method, $uri = '/', $server = array(), $cookies = array(), $esi = false, $headers = array())
+    public function request($method, $uri = '/', $server = [], $cookies = [], $esi = false, $headers = [])
     {
         if (null === $this->kernel) {
             throw new \LogicException('You must call setNextResponse() before calling request().');
@@ -126,7 +126,7 @@ public function request($method, $uri = '/', $server = array(), $cookies = array
 
         $this->esi = $esi ? new Esi() : null;
         $this->cache = new HttpCache($this->kernel, $this->store, $this->esi, $this->cacheConfig);
-        $this->request = Request::create($uri, $method, array(), $cookies, array(), $server);
+        $this->request = Request::create($uri, $method, [], $cookies, [], $server);
         $this->request->headers->add($headers);
 
         $this->response = $this->cache->handle($this->request, HttpKernelInterface::MASTER_REQUEST, $this->catch);
@@ -136,7 +136,7 @@ public function request($method, $uri = '/', $server = array(), $cookies = array
 
     public function getMetaStorageValues()
     {
-        $values = array();
+        $values = [];
         foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator(sys_get_temp_dir().'/http_cache/md', \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
             $values[] = file_get_contents($file);
         }
@@ -145,7 +145,7 @@ public function getMetaStorageValues()
     }
 
     // A basic response with 200 status code and a tiny body.
-    public function setNextResponse($statusCode = 200, array $headers = array(), $body = 'Hello World', \Closure $customizer = null)
+    public function setNextResponse($statusCode = 200, array $headers = [], $body = 'Hello World', \Closure $customizer = null)
     {
         $this->kernel = new TestHttpKernel($body, $statusCode, $headers, $customizer);
     }
@@ -168,7 +168,7 @@ public static function clearDirectory($directory)
 
         $fp = opendir($directory);
         while (false !== $file = readdir($fp)) {
-            if (!\in_array($file, array('.', '..'))) {
+            if (!\in_array($file, ['.', '..'])) {
                 if (is_link($directory.'/'.$file)) {
                     unlink($directory.'/'.$file);
                 } elseif (is_dir($directory.'/'.$file)) {
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/SsiTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/SsiTest.php
index 26ef6cb2b8e6..2fc0bb9660dd 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/SsiTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/SsiTest.php
@@ -187,13 +187,13 @@ public function testHandleWhenResponseIsNot200AndAltIsPresent()
         $response1 = new Response('foo');
         $response1->setStatusCode(404);
         $response2 = new Response('bar');
-        $cache = $this->getCache(Request::create('/'), array($response1, $response2));
+        $cache = $this->getCache(Request::create('/'), [$response1, $response2]);
         $this->assertEquals('bar', $ssi->handle($cache, '/', '/alt', false));
     }
 
     protected function getCache($request, $response)
     {
-        $cache = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpCache\HttpCache')->setMethods(array('getRequest', 'handle'))->disableOriginalConstructor()->getMock();
+        $cache = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpCache\HttpCache')->setMethods(['getRequest', 'handle'])->disableOriginalConstructor()->getMock();
         $cache->expects($this->any())
               ->method('getRequest')
               ->will($this->returnValue($request))
@@ -201,7 +201,7 @@ protected function getCache($request, $response)
         if (\is_array($response)) {
             $cache->expects($this->any())
                   ->method('handle')
-                  ->will(\call_user_func_array(array($this, 'onConsecutiveCalls'), $response))
+                  ->will(\call_user_func_array([$this, 'onConsecutiveCalls'], $response))
             ;
         } else {
             $cache->expects($this->any())
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/StoreTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/StoreTest.php
index cef019167a4e..fc47ff2c88c5 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/StoreTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/StoreTest.php
@@ -29,7 +29,7 @@ class StoreTest extends TestCase
     protected function setUp()
     {
         $this->request = Request::create('/');
-        $this->response = new Response('hello world', 200, array());
+        $this->response = new Response('hello world', 200, []);
 
         HttpCacheTestCase::clearDirectory(sys_get_temp_dir().'/http_cache');
 
@@ -108,7 +108,7 @@ public function testFindsAStoredEntryWithLookup()
 
     public function testDoesNotFindAnEntryWithLookupWhenNoneExists()
     {
-        $request = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar'));
+        $request = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar']);
 
         $this->assertNull($this->store->lookup($request));
     }
@@ -137,7 +137,7 @@ public function testRestoresResponseHeadersProperlyWithLookup()
         $this->storeSimpleEntry();
         $response = $this->store->lookup($this->request);
 
-        $this->assertEquals($response->headers->all(), array_merge(array('content-length' => 4, 'x-body-file' => array($this->getStorePath($response->headers->get('X-Content-Digest')))), $this->response->headers->all()));
+        $this->assertEquals($response->headers->all(), array_merge(['content-length' => 4, 'x-body-file' => [$this->getStorePath($response->headers->get('X-Content-Digest'))]], $this->response->headers->all()));
     }
 
     public function testRestoresResponseContentFromEntityStoreWithLookup()
@@ -165,9 +165,9 @@ public function testSucceedsQuietlyWhenInvalidateCalledWithNoMatchingEntries()
 
     public function testDoesNotReturnEntriesThatVaryWithLookup()
     {
-        $req1 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar'));
-        $req2 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Bling', 'HTTP_BAR' => 'Bam'));
-        $res = new Response('test', 200, array('Vary' => 'Foo Bar'));
+        $req1 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar']);
+        $req2 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Bling', 'HTTP_BAR' => 'Bam']);
+        $res = new Response('test', 200, ['Vary' => 'Foo Bar']);
         $this->store->write($req1, $res);
 
         $this->assertNull($this->store->lookup($req2));
@@ -175,9 +175,9 @@ public function testDoesNotReturnEntriesThatVaryWithLookup()
 
     public function testDoesNotReturnEntriesThatSlightlyVaryWithLookup()
     {
-        $req1 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar'));
-        $req2 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bam'));
-        $res = new Response('test', 200, array('Vary' => array('Foo', 'Bar')));
+        $req1 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar']);
+        $req2 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bam']);
+        $res = new Response('test', 200, ['Vary' => ['Foo', 'Bar']]);
         $this->store->write($req1, $res);
 
         $this->assertNull($this->store->lookup($req2));
@@ -185,16 +185,16 @@ public function testDoesNotReturnEntriesThatSlightlyVaryWithLookup()
 
     public function testStoresMultipleResponsesForEachVaryCombination()
     {
-        $req1 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar'));
-        $res1 = new Response('test 1', 200, array('Vary' => 'Foo Bar'));
+        $req1 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar']);
+        $res1 = new Response('test 1', 200, ['Vary' => 'Foo Bar']);
         $key = $this->store->write($req1, $res1);
 
-        $req2 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Bling', 'HTTP_BAR' => 'Bam'));
-        $res2 = new Response('test 2', 200, array('Vary' => 'Foo Bar'));
+        $req2 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Bling', 'HTTP_BAR' => 'Bam']);
+        $res2 = new Response('test 2', 200, ['Vary' => 'Foo Bar']);
         $this->store->write($req2, $res2);
 
-        $req3 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Baz', 'HTTP_BAR' => 'Boom'));
-        $res3 = new Response('test 3', 200, array('Vary' => 'Foo Bar'));
+        $req3 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Baz', 'HTTP_BAR' => 'Boom']);
+        $res3 = new Response('test 3', 200, ['Vary' => 'Foo Bar']);
         $this->store->write($req3, $res3);
 
         $this->assertEquals($this->getStorePath('en'.hash('sha256', 'test 3')), $this->store->lookup($req3)->getContent());
@@ -206,18 +206,18 @@ public function testStoresMultipleResponsesForEachVaryCombination()
 
     public function testOverwritesNonVaryingResponseWithStore()
     {
-        $req1 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar'));
-        $res1 = new Response('test 1', 200, array('Vary' => 'Foo Bar'));
+        $req1 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar']);
+        $res1 = new Response('test 1', 200, ['Vary' => 'Foo Bar']);
         $key = $this->store->write($req1, $res
341A
1);
         $this->assertEquals($this->getStorePath('en'.hash('sha256', 'test 1')), $this->store->lookup($req1)->getContent());
 
-        $req2 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Bling', 'HTTP_BAR' => 'Bam'));
-        $res2 = new Response('test 2', 200, array('Vary' => 'Foo Bar'));
+        $req2 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Bling', 'HTTP_BAR' => 'Bam']);
+        $res2 = new Response('test 2', 200, ['Vary' => 'Foo Bar']);
         $this->store->write($req2, $res2);
         $this->assertEquals($this->getStorePath('en'.hash('sha256', 'test 2')), $this->store->lookup($req2)->getContent());
 
-        $req3 = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar'));
-        $res3 = new Response('test 3', 200, array('Vary' => 'Foo Bar'));
+        $req3 = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar']);
+        $res3 = new Response('test 3', 200, ['Vary' => 'Foo Bar']);
         $key = $this->store->write($req3, $res3);
         $this->assertEquals($this->getStorePath('en'.hash('sha256', 'test 3')), $this->store->lookup($req3)->getContent());
 
@@ -226,7 +226,7 @@ public function testOverwritesNonVaryingResponseWithStore()
 
     public function testLocking()
     {
-        $req = Request::create('/test', 'get', array(), array(), array(), array('HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar'));
+        $req = Request::create('/test', 'get', [], [], [], ['HTTP_FOO' => 'Foo', 'HTTP_BAR' => 'Bar']);
         $this->assertTrue($this->store->lock($req));
 
         $path = $this->store->lock($req);
@@ -263,14 +263,14 @@ public function testPurgeHttpAndHttps()
         $this->assertEmpty($this->getStoreMetadata($requestHttps));
     }
 
-    protected function storeSimpleEntry($path = null, $headers = array())
+    protected function storeSimpleEntry($path = null, $headers = [])
     {
         if (null === $path) {
             $path = '/test';
         }
 
-        $this->request = Request::create($path, 'get', array(), array(), array(), $headers);
-        $this->response = new Response('test', 200, array('Cache-Control' => 'max-age=420'));
+        $this->request = Request::create($path, 'get', [], [], [], $headers);
+        $this->response = new Response('test', 200, ['Cache-Control' => 'max-age=420']);
 
         return $this->store->write($this->request, $this->response);
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/SubRequestHandlerTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/SubRequestHandlerTest.php
index dfe0a734bf9f..67b637bfe3d0 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/SubRequestHandlerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/SubRequestHandlerTest.php
@@ -33,7 +33,7 @@ protected function tearDown()
 
     public function testTrustedHeadersAreKept()
     {
-        Request::setTrustedProxies(array('10.0.0.1'), -1);
+        Request::setTrustedProxies(['10.0.0.1'], -1);
         $globalState = $this->getGlobalState();
 
         $request = Request::create('/');
@@ -82,7 +82,7 @@ public function testUntrustedHeadersAreRemoved()
 
     public function testTrustedForwardedHeader()
     {
-        Request::setTrustedProxies(array('10.0.0.1'), -1);
+        Request::setTrustedProxies(['10.0.0.1'], -1);
         $globalState = $this->getGlobalState();
 
         $request = Request::create('/');
@@ -104,7 +104,7 @@ public function testTrustedForwardedHeader()
 
     public function testTrustedXForwardedForHeader()
     {
-        Request::setTrustedProxies(array('10.0.0.1'), -1);
+        Request::setTrustedProxies(['10.0.0.1'], -1);
         $globalState = $this->getGlobalState();
 
         $request = Request::create('/');
@@ -127,10 +127,10 @@ public function testTrustedXForwardedForHeader()
 
     private function getGlobalState()
     {
-        return array(
+        return [
             Request::getTrustedProxies(),
             Request::getTrustedHeaderSet(),
-        );
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestHttpKernel.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestHttpKernel.php
index 5dbf02c9922d..304ff9d9e43e 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestHttpKernel.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestHttpKernel.php
@@ -41,7 +41,7 @@ public function __construct($body, $status, $headers, \Closure $customizer = nul
 
     public function assert(\Closure $callback)
     {
-        $trustedConfig = array(Request::getTrustedProxies(), Request::getTrustedHeaderSet());
+        $trustedConfig = [Request::getTrustedProxies(), Request::getTrustedHeaderSet()];
 
         list($trustedProxies, $trustedHeaderSet, $backendRequest) = $this->backendRequest;
         Request::setTrustedProxies($trustedProxies, $trustedHeaderSet);
@@ -57,7 +57,7 @@ public function assert(\Closure $callback)
     public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = false)
     {
         $this->catch = $catch;
-        $this->backendRequest = array(Request::getTrustedProxies(), Request::getTrustedHeaderSet(), $request);
+        $this->backendRequest = [Request::getTrustedProxies(), Request::getTrustedHeaderSet(), $request];
 
         return parent::handle($request, $type, $catch);
     }
@@ -69,12 +69,12 @@ public function isCatchingExceptions()
 
     public function getController(Request $request)
     {
-        return array($this, 'callController');
+        return [$this, 'callController'];
     }
 
     public function getArguments(Request $request, $controller)
     {
-        return array($request);
+        return [$request];
     }
 
     public function callController(Request $request)
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestMultipleHttpKernel.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestMultipleHttpKernel.php
index 712132bd13f3..010bee86895a 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestMultipleHttpKernel.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestMultipleHttpKernel.php
@@ -21,9 +21,9 @@
 
 class TestMultipleHttpKernel extends HttpKernel implements ControllerResolverInterface, ArgumentResolverInterface
 {
-    protected $bodies = array();
-    protected $statuses = array();
-    protected $headers = array();
+    protected $bodies = [];
+    protected $statuses = [];
+    protected $headers = [];
     protected $called = false;
     protected $backendRequest;
 
@@ -52,12 +52,12 @@ public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQ
 
     public function getController(Request $request)
     {
-        return array($this, 'callController');
+        return [$this, 'callController'];
     }
 
     public function getArguments(Request $request, $controller)
     {
-        return array($request);
+        return [$request];
     }
 
     public function callController(Request $request)
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php
index 239865a861b1..939ecc044635 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php
@@ -104,7 +104,7 @@ public function testHandleHttpException()
             $event->setResponse(new Response($event->getException()->getMessage()));
         });
 
-        $kernel = $this->getHttpKernel($dispatcher, function () { throw new MethodNotAllowedHttpException(array('POST')); });
+        $kernel = $this->getHttpKernel($dispatcher, function () { throw new MethodNotAllowedHttpException(['POST']); });
         $response = $kernel->handle(new Request());
 
         $this->assertEquals('405', $response->getStatusCode());
@@ -119,7 +119,7 @@ public function testLegacyHandleWhenAnExceptionIsHandledWithASpecificStatusCode(
     {
         $dispatcher = new EventDispatcher();
         $dispatcher->addListener(KernelEvents::EXCEPTION, function ($event) use ($responseStatusCode, $expectedStatusCode) {
-            $event->setResponse(new Response('', $responseStatusCode, array('X-Status-Code' => $expectedStatusCode)));
+            $event->setResponse(new Response('', $responseStatusCode, ['X-Status-Code' => $expectedStatusCode]));
         });
 
         $kernel = $this->getHttpKernel($dispatcher, function () { throw new \RuntimeException(); });
@@ -131,12 +131,12 @@ public function testLegacyHandleWhenAnExceptionIsHandledWithASpecificStatusCode(
 
     public function getStatusCodes()
     {
-        return array(
-            array(200, 404),
-            array(404, 200),
-            array(301, 200),
-            array(500, 200),
-        );
+        return [
+            [200, 404],
+            [404, 200],
+            [301, 200],
+            [500, 200],
+        ];
     }
 
     /**
@@ -158,11 +158,11 @@ public function testHandleWhenAnExceptionIsHandledWithASpecificStatusCode($expec
 
     public function getSpecificStatusCodes()
     {
-        return array(
-            array(200),
-            array(302),
-            array(403),
-        );
+        return [
+            [200],
+            [302],
+            [403],
+        ];
     }
 
     public function testHandleWhenAListenerReturnsAResponse()
@@ -216,7 +216,7 @@ public function testHandleWhenTheControllerIsAFunction()
     public function testHandleWhenTheControllerIsAnArray()
     {
         $dispatcher = new EventDispatcher();
-        $kernel = $this->getHttpKernel($dispatcher, array(new TestController(), 'controller'));
+        $kernel = $this->getHttpKernel($dispatcher, [new TestController(), 'controller']);
 
         $this->assertResponseEquals(new Response('foo'), $kernel->handle(new Request()));
     }
@@ -224,7 +224,7 @@ public function testHandleWhenTheControllerIsAnArray()
     public function testHandleWhenTheControllerIsAStaticArray()
     {
         $dispatcher = new EventDispatcher();
-        $kernel = $this->getHttpKernel($dispatcher, array('Symfony\Component\HttpKernel\Tests\TestController', 'staticcontroller'));
+        $kernel = $this->getHttpKernel($dispatcher, ['Symfony\Component\HttpKernel\Tests\TestController', 'staticcontroller']);
 
         $this->assertResponseEquals(new Response('foo'), $kernel->handle(new Request()));
     }
@@ -267,7 +267,7 @@ public function testHandleAllowChangingControllerArguments()
     {
         $dispatcher = new EventDispatcher();
         $dispatcher->addListener(KernelEvents::CONTROLLER_ARGUMENTS, function (FilterControllerArgumentsEvent $event) {
-            $event->setArguments(array('foo'));
+            $event->setArguments(['foo']);
         });
 
         $kernel = $this->getHttpKernel($dispatcher, function ($content) { return new Response($content); });
@@ -291,12 +291,12 @@ public function testHandleAllowChangingControllerAndArguments()
             };
 
             $event->setController($newController);
-            $event->setArguments(array('bar'));
+            $event->setArguments(['bar']);
         });
 
-        $kernel = $this->getHttpKernel($dispatcher, function ($content) { return new Response($content); }, null, array('foo'));
+        $kernel = $this->getHttpKernel($dispatcher, function ($content) { return new Response($content); }, null, ['foo']);
 
-        $this->assertResponseEquals(new Response('foo', 200, array('X-Id' => 'bar')), $kernel->handle(new Request()));
+        $this->assertResponseEquals(new Response('foo', 200, ['X-Id' => 'bar']), $kernel->handle(new Request()));
     }
 
     public function testTerminate()
@@ -321,7 +321,7 @@ public function testVerifyRequestStackPushPopDuringHandle()
     {
         $request = new Request();
 
-        $stack = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestStack')->setMethods(array('push', 'pop'))->getMock();
+        $stack = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestStack')->setMethods(['push', 'pop'])->getMock();
         $stack->expects($this->at(0))->method('push')->with($this->equalTo($request));
         $stack->expects($this->at(1))->method('pop');
 
@@ -337,7 +337,7 @@ public function testVerifyRequestStackPushPopDuringHandle()
     public function testInconsistentClientIpsOnMasterRequests()
     {
         $request = new Request();
-        $request->setTrustedProxies(array('1.1.1.1'), Request::HEADER_X_FORWARDED_FOR | Request::HEADER_FORWARDED);
+        $request->setTrustedProxies(['1.1.1.1'], Request::HEADER_X_FORWARDED_FOR | Request::HEADER_FORWARDED);
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $request->headers->set('FORWARDED', 'for=2.2.2.2');
         $request->headers->set('X_FORWARDED_FOR', '3.3.3.3');
@@ -350,10 +350,10 @@ public function testInconsistentClientIpsOnMasterRequests()
         $kernel = $this->getHttpKernel($dispatcher);
         $kernel->handle($request, $kernel::MASTER_REQUEST, false);
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
-    private function getHttpKernel(EventDispatcherInterface $eventDispatcher, $controller = null, RequestStack $requestStack = nu
F438
ll, array $arguments = array())
+    private function getHttpKernel(EventDispatcherInterface $eventDispatcher, $controller = null, RequestStack $requestStack = null, array $arguments = [])
     {
         if (null === $controller) {
             $controller = function () { return new Response('Hello'); };
diff --git a/src/Symfony/Component/HttpKernel/Tests/KernelTest.php b/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
index ab0b8cfb6ec6..208e11e182d6 100644
--- a/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
@@ -92,7 +92,7 @@ public function testInitializeContainerClearsOldContainers()
 
     public function testBootInitializesBundlesAndContainer()
     {
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer']);
         $kernel->expects($this->once())
             ->method('initializeBundles');
         $kernel->expects($this->once())
@@ -107,10 +107,10 @@ public function testBootSetsTheContainerToTheBundles()
         $bundle->expects($this->once())
             ->method('setContainer');
 
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer', 'getBundles'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer', 'getBundles']);
         $kernel->expects($this->once())
             ->method('getBundles')
-            ->will($this->returnValue(array($bundle)));
+            ->will($this->returnValue([$bundle]));
 
         $kernel->boot();
     }
@@ -118,7 +118,7 @@ public function testBootSetsTheContainerToTheBundles()
     public function testBootSetsTheBootedFlagToTrue()
     {
         // use test kernel to access isBooted()
-        $kernel = $this->getKernelForTest(array('initializeBundles', 'initializeContainer'));
+        $kernel = $this->getKernelForTest(['initializeBundles', 'initializeContainer']);
         $kernel->boot();
 
         $this->assertTrue($kernel->isBooted());
@@ -129,7 +129,7 @@ public function testBootSetsTheBootedFlagToTrue()
      */
     public function testClassCacheIsLoaded()
     {
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer', 'doLoadClassCache'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer', 'doLoadClassCache']);
         $kernel->loadClassCache('name', '.extension');
         $kernel->expects($this->once())
             ->method('doLoadClassCache')
@@ -140,7 +140,7 @@ public function testClassCacheIsLoaded()
 
     public function testClassCacheIsNotLoadedByDefault()
     {
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer', 'doLoadClassCache'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer', 'doLoadClassCache']);
         $kernel->expects($this->never())
             ->method('doLoadClassCache');
 
@@ -152,7 +152,7 @@ public function testClassCacheIsNotLoadedByDefault()
      */
     public function testClassCacheIsNotLoadedWhenKernelIsNotBooted()
     {
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer', 'doLoadClassCache'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer', 'doLoadClassCache']);
         $kernel->loadClassCache();
         $kernel->expects($this->never())
             ->method('doLoadClassCache');
@@ -163,7 +163,7 @@ public function testEnvParametersResourceIsAdded()
         $container = new ContainerBuilder();
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\Tests\Fixtures\KernelForTest')
             ->disableOriginalConstructor()
-            ->setMethods(array('getContainerBuilder', 'prepareContainer', 'getCacheDir', 'getLogDir'))
+            ->setMethods(['getContainerBuilder', 'prepareContainer', 'getCacheDir', 'getLogDir'])
             ->getMock();
         $kernel->expects($this->any())
             ->method('getContainerBuilder')
@@ -196,7 +196,7 @@ public function testEnvParametersResourceIsAdded()
 
     public function testBootKernelSeveralTimesOnlyInitializesBundlesOnce()
     {
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer']);
         $kernel->expects($this->once())
             ->method('initializeBundles');
 
@@ -210,7 +210,7 @@ public function testShutdownCallsShutdownOnAllBundles()
         $bundle->expects($this->once())
             ->method('shutdown');
 
-        $kernel = $this->getKernel(array(), array($bundle));
+        $kernel = $this->getKernel([], [$bundle]);
 
         $kernel->boot();
         $kernel->shutdown();
@@ -223,10 +223,10 @@ public function testShutdownGivesNullContainerToAllBundles()
             ->method('setContainer')
             ->with(null);
 
-        $kernel = $this->getKernel(array('getBundles'));
+        $kernel = $this->getKernel(['getBundles']);
         $kernel->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array($bundle)));
+            ->will($this->returnValue([$bundle]));
 
         $kernel->boot();
         $kernel->shutdown();
@@ -246,7 +246,7 @@ public function testHandleCallsHandleOnHttpKernel()
             ->method('handle')
             ->with($request, $type, $catch);
 
-        $kernel = $this->getKernel(array('getHttpKernel'));
+        $kernel = $this->getKernel(['getHttpKernel']);
         $kernel->expects($this->once())
             ->method('getHttpKernel')
             ->will($this->returnValue($httpKernelMock));
@@ -264,7 +264,7 @@ public function testHandleBootsTheKernel()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $kernel = $this->getKernel(array('getHttpKernel', 'boot'));
+        $kernel = $this->getKernel(['getHttpKernel', 'boot']);
         $kernel->expects($this->once())
             ->method('getHttpKernel')
             ->will($this->returnValue($httpKernelMock));
@@ -384,7 +384,7 @@ public function testSerialize()
         $debug = true;
         $kernel = new KernelForTest($env, $debug);
 
-        $expected = serialize(array($env, $debug));
+        $expected = serialize([$env, $debug]);
         $this->assertEquals($expected, $kernel->serialize());
     }
 
@@ -417,11 +417,11 @@ public function testLocateResourceThrowsExceptionWhenBundleDoesNotExist()
      */
     public function testLocateResourceThrowsExceptionWhenResourceDoesNotExist()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
-            ->will($this->returnValue(array($this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle'))))
+            ->will($this->returnValue([$this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle')]))
         ;
 
         $kernel->locateResource('@Bundle1Bundle/config/routing.xml');
@@ -429,11 +429,11 @@ public function testLocateResourceThrowsExceptionWhenResourceDoesNotExist()
 
     public function testLocateResourceReturnsTheFirstThatMatches()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
-            ->will($this->returnValue(array($this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle'))))
+            ->will($this->returnValue([$this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle')]))
         ;
 
         $this->assertEquals(__DIR__.'/Fixtures/Bundle1Bundle/foo.txt', $kernel->locateResource('@Bundle1Bundle/foo.txt'));
@@ -447,11 +447,11 @@ public function testLocateResourceReturnsTheFirstThatMatchesWithParent()
         $parent = $this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle');
         $child = $this->getBundle(__DIR__.'/Fixtures/Bundle2Bundle');
 
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->exactly(2))
             ->method('getBundle')
-            ->will($this->returnValue(array($child, $parent)))
+            ->will($this->returnValue([$child, $parent]))
         ;
 
         $this->assertEquals(__DIR__.'/Fixtures/Bundle2Bundle/foo.txt', $kernel->locateResource('@ParentAABundle/foo.txt'));
@@ -466,16 +466,16 @@ public function testLocateResourceReturnsAllMatches()
         $parent = $this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle');
         $child = $this->getBundle(__DIR__.'/Fixtures/Bundle2Bundle');
 
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
-            ->will($this->returnValue(array($child, $parent)))
+            ->will($this->returnValue([$child, $parent]))
         ;
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             __DIR__.'/Fixtures/Bundle2Bundle/foo.txt',
-            __DIR__.'/Fixtures/Bundle1Bundle/foo.txt', ),
+            __DIR__.'/Fixtures/Bundle1Bundle/foo.txt', ],
             $kernel->locateResource('@Bundle1Bundle/foo.txt', null, false));
     }
 
@@ -484,29 +484,29 @@ public function testLocateResourceReturnsAllMatches()
      */
     public function testLocateResourceReturnsAllMatchesBis()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
-            ->will($this->returnValue(array(
+            ->will($this->returnValue([
                 $this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle'),
                 $this->getBundle(__DIR__.'/Foobar'),
-            )))
+            ]))
         ;
 
         $this->assertEquals(
-            array(__DIR__.'/Fixtures/Bundle1Bundle/foo.txt'),
+            [__DIR__.'/Fixtures/Bundle1Bundle/foo.txt'],
             $kernel->locateResource('@Bundle1Bundle/foo.txt', null, false)
         );
     }
 
     public function testLocateResourceIgnoresDirOnNonResource()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
-            ->will($this->returnValue(array($this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle'))))
+            ->will($this->returnValue([$this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle')]))
         ;
 
         $this->assertEquals(
@@ -517,11 +517,11 @@ public function testLocateResourceIgnoresDirOnNonResource()
 
     public function testLocateResourceReturnsTheDirOneForResources()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
-            ->will($this->returnValue(array($this->getBundle(__DIR__.'/Fixtures/FooBundle', null, null, 'FooBundle'))))
+            ->will($this->returnValue([$this->getBundle(__DIR__.'/Fixtures/FooBundle', null, null, 'FooBundle')]))
         ;
 
         $this->assertEquals(
@@ -535,16 +535,16 @@ public function testLocateResourceReturnsTheDirOneForResources()
      */
     public function testLocateResourceReturnsTheDirOneForResourcesAndBundleOnes()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
-            ->will($this->returnValue(array($this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle', null, null, 'Bundle1Bundle'))))
+            ->will($this->returnValue([$this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle', null, null, 'Bundle1Bundle')]))
         ;
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             __DIR__.'/Fixtures/Resources/Bundle1Bundle/foo.txt',
-            __DIR__.'/Fixtures/Bundle1Bundle/Resources/foo.txt', ),
+            __DIR__.'/Fixtures/Bundle1Bundle/Resources/foo.txt', ],
             $kernel->locateResource('@Bundle1Bundle/Resources/foo.txt', __DIR__.'/Fixtures/Resources', false)
         );
     }
@@ -557,18 +557,18 @@ public function testLocateResourceOverrideBundleAndResourcesFolders()
         $parent = $this->getBundle(__DIR__.'/Fixtures/BaseBundle', null, 'BaseBundle', 'BaseBundle');
         $child = $this->getBundle(__DIR__.'/Fixtures/ChildBundle', 'ParentBundle', 'ChildBundle', 'ChildBundle');
 
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->exactly(4))
             ->method('getBundle')
-            ->will($this->returnValue(array($child, $parent)))
+            ->will($this->returnValue([$child, $parent]))
         ;
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             __DIR__.'/Fixtures/Resources/ChildBundle/foo.txt',
             __DIR__.'/Fixtures/ChildBundle/Resources/foo.txt',
             __DIR__.'/Fixtures/BaseBundle/Resources/foo.txt',
-            ),
+            ],
             $kernel->locateResource('@BaseBundle/Resources/foo.txt', __DIR__.'/Fixtures/Resources', false)
         );
 
@@ -592,11 +592,11 @@ public function testLocateResourceOverrideBundleAndResourcesFolders()
 
     public function testLocateResourceOnDirectories()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->exactly(2))
             ->method('getBundle')
-            ->will($this->returnValue(array($this->getBundle(__DIR__.'/Fixtures/FooBundle', null, null, 'FooBundle'))))
+            ->will($this->returnValue([$this->getBundle(__DIR__.'/Fixtures/FooBundle', null, null, 'FooBundle')]))
         ;
 
         $this->assertEquals(
@@ -608,11 +608,11 @@ public function testLocateResourceOnDirectories()
             $kernel->locateResource('@FooBundle/Resources', __DIR__.'/Fixtures/Resources')
         );
 
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->exactly(2))
             ->method('getBundle')
-            ->will($this->returnValue(array($this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle', null, null, 'Bundle1Bundle'))))
+            ->will($this->returnValue([$this->getBundle(__DIR__.'/Fixtures/Bundle1Bundle', null, null, 'Bundle1Bundle')]))
         ;
 
         $this->assertEquals(
@@ -634,16 +634,16 @@ public function testInitializeBundles()
         $child = $this->getBundle(null, 'ParentABundle', 'ChildABundle');
 
         // use test kernel so we can access getBundleMap()
-        $kernel = $this->getKernelForTest(array('registerBundles'));
+        $kernel = $this->getKernelForTest(['registerBundles']);
         $kernel
             ->expects($this->once())
             ->method('registerBundles')
-            ->will($this->returnValue(array($parent, $child)))
+            ->will($this->returnValue([$parent, $child]))
         ;
         $kernel->boot();
 
         $map = $kernel->getBundleMap();
-        $this->assertEquals(array($child, $parent), $map['ParentABundle']);
+        $this->assertEquals([$child, $parent], $map['ParentABundle']);
     }
 
     /**
@@ -656,18 +656,18 @@ public function testInitializeBundlesSupportInheritanceCascade()
         $child = $this->getBundle(null, 'ParentBBundle', 'ChildBBundle');
 
         // use test kernel so we can access getBundleMap()
-        $kernel = $this->getKernelForTest(array('registerBundles'));
+        $kernel = $this->getKernelForTest(['registerBundles']);
         $kernel
             ->expects($this->once())
             ->method('registerBundles')
-            ->will($this->returnValue(array($grandparent, $parent, $child)))
+            ->will($this->returnValue([$grandparent, $parent, $child]))
         ;
         $kernel->boot();
 
         $map = $kernel->getBundleMap();
-        $this->assertEquals(array($child, $parent, $grandparent), $map['GrandParentBBundle']);
-        $this->assertEquals(array($child, $parent), $map['ParentBBundle']);
-        $this->assertEquals(array($child), $map['ChildBBundle']);
+        $this->assertEquals([$child, $parent, $grandparent], $map['GrandParentBBundle']);
+        $this->assertEquals([$child, $parent], $map['ParentBBundle']);
+        $this->assertEquals([$child], $map['ChildBBundle']);
     }
 
     /**
@@ -678,7 +678,7 @@ public function testInitializeBundlesSupportInheritanceCascade()
     public function testInitializeBundlesThrowsExceptionWhenAParentDoesNotExists()
     {
         $child = $this->getBundle(null, 'FooBar', 'ChildCBundle');
-        $kernel = $this->getKernel(array(), array($child));
+        $kernel = $this->getKernel([], [$child]);
         $kernel->boot();
     }
 
@@ -692,18 +692,18 @@ public function testInitializeBundlesSupportsArbitraryBundleRegistrationOrder()
         $child = $this->getBundle(null, 'ParentCBundle', 'ChildCBundle');
 
         // use test kernel so we can access getBundleMap()
-        $kernel = $this->getKernelForTest(array('registerBundles'));
+        $kernel = $this->getKernelForTest(['registerBundles']);
         $kernel
             ->expects($this->once())
             ->method('registerBundles')
-            ->will($this->returnValue(array($parent, $grandparent, $child)))
+            ->will($this->returnValue([$parent, $grandparent, $child]))
         ;
         $kernel->boot();
 
         $map = $kernel->getBundleMap();
-        $this->assertEquals(array($child, $parent, $grandparent), $map['GrandParentCBundle']);
-        $this->assertEquals(array($child, $parent), $map['ParentCBundle']);
-        $this->assertEquals(array($child), $map['ChildCBundle']);
+        $this->assertEquals([$child, $parent, $grandparent], $map['GrandParentCBundle']);
+        $this->assertEquals([$child, $parent], $map['ParentCBundle']);
+        $this->assertEquals([$child], $map['ChildCBundle']);
     }
 
     /**
@@ -717,7 +717,7 @@ public function testInitializeBundlesThrowsExceptionWhenABundleIsDirectlyExtende
         $child1 = $this->getBundle(null, 'ParentCBundle', 'ChildC1Bundle');
         $child2 = $this->getBundle(null, 'ParentCBundle', 'ChildC2Bundle');
 
-        $kernel = $this->getKernel(array(), array($parent, $child1, $child2));
+        $kernel = $this->getKernel([], [$parent, $child1, $child2]);
         $kernel->boot();
     }
 
@@ -731,7 +731,7 @@ public function testInitializeBundleThrowsExceptionWhenRegisteringTwoBundlesWith
         $fooBundle = $this->getBundle(null, null, 'FooBundle', 'DuplicateName');
         $barBundle = $this->getBundle(null, null, 'BarBundle', 'DuplicateName');
 
-        $kernel = $this->getKernel(array(), array($fooBundle, $barBundle));
+        $kernel = $this->getKernel([], [$fooBundle, $barBundle]);
         $kernel->boot();
     }
 
@@ -744,13 +744,13 @@ public function testInitializeBundleThrowsExceptionWhenABundleExtendsItself()
     {
         $circularRef = $this->getBundle(null, 'CircularRefBundle', 'CircularRefBundle');
 
-        $kernel = $this->getKernel(array(), array($circularRef));
+        $kernel = $this->getKernel([], [$circularRef]);
         $kernel->boot();
     }
 
     public function testTerminateReturnsSilentlyIfKernelIsNotBooted()
     {
-        $kernel = $this->getKernel(array('getHttpKernel'));
+        $kernel = $this->getKernel(['getHttpKernel']);
         $kernel->expects($this->never())
             ->method('getHttpKernel');
 
@@ -762,7 +762,7 @@ public function testTerminateDelegatesTerminationOnlyForTerminableInterface()
         // does not implement TerminableInterface
         $httpKernel = new TestKernel();
 
-        $kernel = $this->getKernel(array('getHttpKernel'));
+        $kernel = $this->getKernel(['getHttpKernel']);
         $kernel->expects($this->once())
             ->method('getHttpKernel')
             ->willReturn($httpKernel);
@@ -775,14 +775,14 @@ public function testTerminateDelegatesTerminationOnlyForTerminableInterface()
         // implements TerminableInterface
         $httpKernelMock = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernel')
             ->disableOriginalConstructor()
-            ->setMethods(array('terminate'))
+            ->setMethods(['terminate'])
             ->getMock();
 
         $httpKernelMock
             ->expects($this->once())
             ->method('terminate');
 
-        $kernel = $this->getKernel(array('getHttpKernel'));
+        $kernel = $this->getKernel(['getHttpKernel']);
         $kernel->expects($this->exactly(2))
             ->method('getHttpKernel')
             ->will($this->returnValue($httpKernelMock));
@@ -882,7 +882,7 @@ public function testServicesResetter()
             $container->addCompilerPass(new ResettableServicePass());
             $container->register('one', ResettableService::class)
                 ->setPublic(true)
-                ->addTag('kernel.reset', array('method' => 'reset'));
+                ->addTag('kernel.reset', ['method' => 'reset']);
             $container->register('services_resetter', ServicesResetter::class)->setPublic(true);
         }, $httpKernelMock, 'resetting');
 
@@ -906,7 +906,7 @@ public function testServicesResetter()
      */
     public function testKernelStartTimeIsResetWhileBootingAlreadyBootedKernel()
     {
-        $kernel = $this->getKernelForTest(array('initializeBundles'), true);
+        $kernel = $this->getKernelForTest(['initializeBundles'], true);
         $kernel->boot();
         $preReBoot = $kernel->getStartTime();
 
@@ -925,7 +925,7 @@ protected function getBundle($dir = null, $parent = null, $className = null, $bu
     {
         $bundle = $this
             ->getMockBuilder('Symfony\Component\HttpKernel\Bundle\BundleInterface')
-            ->setMethods(array('getPath', 'getParent', 'getName'))
+            ->setMethods(['getPath', 'getParent', 'getName'])
             ->disableOriginalConstructor()
         ;
 
@@ -964,14 +964,14 @@ protected function getBundle($dir = null, $parent = null, $className = null, $bu
      *
      * @return Kernel
      */
-    protected function getKernel(array $methods = array(), array $bundles = array())
+    protected function getKernel(array $methods = [], array $bundles = [])
     {
         $methods[] = 'registerBundles';
 
         $kernel = $this
             ->getMockBuilder('Symfony\Component\HttpKernel\Kernel')
             ->setMethods($methods)
-            ->setConstructorArgs(array('test', false))
+            ->setConstructorArgs(['test', false])
             ->getMockForAbstractClass()
         ;
         $kernel->expects($this->any())
@@ -985,10 +985,10 @@ protected function getKernel(array $methods = array(), array $bundles = array())
         return $kernel;
     }
 
-    protected function getKernelForTest(array $methods = array(), $debug = false)
+    protected function getKernelForTest(array $methods = [], $debug = false)
     {
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\Tests\Fixtures\KernelForTest')
-            ->setConstructorArgs(array('test', $debug))
+            ->setConstructorArgs(['test', $debug])
             ->setMethods($methods)
             ->getMock();
         $p = new \ReflectionProperty($kernel, 'rootDir');
@@ -1030,7 +1030,7 @@ public function __construct(\Closure $buildContainer = null, HttpKernelInterface
 
     public function registerBundles()
     {
-        return array();
+        return [];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
diff --git a/src/Symfony/Component/HttpKernel/Tests/Log/LoggerTest.php b/src/Symfony/Component/HttpKernel/Tests/Log/LoggerTest.php
index a5d070c8a750..7354000b1659 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Log/LoggerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Log/LoggerTest.php
@@ -72,39 +72,39 @@ public function testImplements()
      */
     public function testLogsAtAllLevels($level, $message)
     {
-        $this->logger->{$level}($message, array('user' => 'Bob'));
-        $this->logger->log($level, $message, array('user' => 'Bob'));
+        $this->logger->{$level}($message, ['user' => 'Bob']);
+        $this->logger->log($level, $message, ['user' => 'Bob']);
 
-        $expected = array(
+        $expected = [
             "[$level] message of level $level with context: Bob",
             "[$level] message of level $level with context: Bob",
-        );
+        ];
         $this->assertLogsMatch($expected, $this->getLogs());
     }
 
     public function provideLevelsAndMessages()
     {
-        return array(
-            LogLevel::EMERGENCY => array(LogLevel::EMERGENCY, 'message of level emergency with context: {user}'),
-            LogLevel::ALERT => array(LogLevel::ALERT, 'message of level alert with context: {user}'),
-            LogLevel::CRITICAL => array(LogLevel::CRITICAL, 'message of level critical with context: {user}'),
-            LogLevel::ERROR => array(LogLevel::ERROR, 'message of level error with context: {user}'),
-            LogLevel::WARNING => array(LogLevel::WARNING, 'message of level warning with context: {user}'),
-            LogLevel::NOTICE => array(LogLevel::NOTICE, 'message of level notice with context: {user}'),
-            LogLevel::INFO => array(LogLevel::INFO, 'message of level info with context: {user}'),
-            LogLevel::DEBUG => array(LogLevel::DEBUG, 'message of level debug with context: {user}'),
-        );
+        return [
+            LogLevel::EMERGENCY => [LogLevel::EMERGENCY, 'message of level emergency with context: {user}'],
+            LogLevel::ALERT => [LogLevel::ALERT, 'message of level alert with context: {user}'],
+            LogLevel::CRITICAL => [LogLevel::CRITICAL, 'message of level critical with context: {user}'],
+            LogLevel::ERROR => [LogLevel::ERROR, 'message of level error with context: {user}'],
+            LogLevel::WARNING => [LogLevel::WARNING, 'message of level warning with context: {user}'],
+            LogLevel::NOTICE => [LogLevel::NOTICE, 'message of level notice with context: {user}'],
+            LogLevel::INFO => [LogLevel::INFO, 'message of level info with context: {user}'],
+            LogLevel::DEBUG => [LogLevel::DEBUG, 'message of level debug with context: {user}'],
+        ];
     }
 
     public function testLogLevelDisabled()
     {
         $this->logger = new Logger(LogLevel::INFO, $this->tmpFile);
 
-        $this->logger->debug('test', array('user' => 'Bob'));
-        $this->logger->log(LogLevel::DEBUG, 'test', array('user' => 'Bob'));
+        $this->logger->debug('test', ['user' => 'Bob']);
+        $this->logger->log(LogLevel::DEBUG, 'test', ['user' => 'Bob']);
 
         // Will always be true, but asserts than an exception isn't thrown
-        $this->assertSame(array(), $this->getLogs());
+        $this->assertSame([], $this->getLogs());
     }
 
     /**
@@ -134,18 +134,18 @@ public function testInvalidOutput()
     public function testContextReplacement()
     {
         $logger = $this->logger;
-        $logger->info('{Message {nothing} {user} {foo.bar} a}', array('user' => 'Bob', 'foo.bar' => 'Bar'));
+        $logger->info('{Message {nothing} {user} {foo.bar} a}', ['user' => 'Bob', 'foo.bar' => 'Bar']);
 
-        $expected = array('[info] {Message {nothing} Bob Bar a}');
+        $expected = ['[info] {Message {nothing} Bob Bar a}'];
         $this->assertLogsMatch($expected, $this->getLogs());
     }
 
     public function testObjectCastToString()
     {
         if (method_exists($this, 'createPartialMock')) {
-            $dummy = $this->createPartialMock(DummyTest::class, array('__toString'));
+            $dummy = $this->createPartialMock(DummyTest::class, ['__toString']);
         } else {
-            $dummy = $this->getMock(DummyTest::class, array('__toString'));
+            $dummy = $this->getMock(DummyTest::class, ['__toString']);
         }
         $dummy->expects($this->atLeastOnce())
             ->method('__toString')
@@ -153,54 +153,54 @@ public function testObjectCastToString()
 
         $this->logger->warning($dummy);
 
-        $expected = array('[warning] DUMMY');
+        $expected = ['[warning] DUMMY'];
         $this->assertLogsMatch($expected, $this->getLogs());
     }
 
     public function testContextCanContainAnything()
     {
-        $context = array(
+        $context = [
             'bool' => true,
             'null' => null,
             'string' => 'Foo',
             'int' => 0,
             'float' => 0.5,
-            'nested' => array('with object' => new DummyTest()),
+            'nested' => ['with object' => new DummyTest()],
             'object' => new \DateTime(),
             'resource' => fopen('php://memory', 'r'),
-        );
+        ];
 
         $this->logger->warning('Crazy context data', $context);
 
-        $expected = array('[warning] Crazy context data');
+        $expected = ['[warning] Crazy context data'];
         $this->assertLogsMatch($expected, $this->getLogs());
     }
 
     public function testContextExceptionKeyCanBeExceptionOrOtherValues()
     {
         $logger = $this->logger;
-        $logger->warning('Random message', array('exception' => 'oops'));
-        $logger->critical('Uncaught Exception!', array('exception' => new \LogicException('Fail')));
+        $logger->warning('Random message', ['exception' => 'oops']);
+        $logger->critical('Uncaught Exception!', ['exception' => new \LogicException('Fail')]);
 
-        $expected = array(
+        $expected = [
             '[warning] Random message',
             '[critical] Uncaught Exception!',
-        );
+        ];
         $this->assertLogsMatch($expected, $this->getLogs());
     }
 
     public function testFormatter()
     {
         $this->logger = new Logger(LogLevel::DEBUG, $this->tmpFile, function ($level, $message, $context) {
-            return json_encode(array('level' => $level, 'message' => $message, 'context' => $context)).\PHP_EOL;
+            return json_encode(['level' => $level, 'message' => $message, 'context' => $context]).\PHP_EOL;
         });
 
-        $this->logger->error('An error', array('foo' => 'bar'));
-        $this->logger->warning('A warning', array('baz' => 'bar'));
-        $this->assertSame(array(
+        $this->logger->error('An error', ['foo' => 'bar']);
+        $this->logger->warning('A warning', ['baz' => 'bar']);
+        $this->assertSame([
             '{"level":"error","message":"An error","context":{"foo":"bar"}}',
             '{"level":"warning","message":"A warning","context":{"baz":"bar"}}',
-        ), $this->getLogs());
+        ], $this->getLogs());
     }
 }
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Logger.php b/src/Symfony/Component/HttpKernel/Tests/Logger.php
index 63c70bf67aa8..8ae756132cc4 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Logger.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Logger.php
@@ -29,59 +29,59 @@ public function getLogs($level = false)
 
     public function clear()
     {
-        $this->logs = array(
-            'emergency' => array(),
-            'alert' => array(),
-            'critical' => array(),
-            'error' => array(),
-            'warning' => array(),
-            'notice' => array(),
-            'info' => array(),
-            'debug' => array(),
-        );
+        $this->logs = [
+            'emergency' => [],
+            'alert' => [],
+            'critical' => [],
+            'error' => [],
+            'warning' => [],
+            'notice' => [],
+            'info' => [],
+            'debug' => [],
+        ];
     }
 
-    public function log($level, $message, array $context = array())
+    public function log($level, $message, array $context = [])
     {
         $this->logs[$level][] = $message;
     }
 
-    public function emergency($message, array $context = array())
+    public function emergency($message, array $context = [])
     {
         $this->log('emergency', $message, $context);
     }
 
-    public function alert($message, array $context = array())
+    public function alert($message, array $context = [])
     {
         $this->log('alert', $message, $context);
     }
 
-    public function critical($message, array $context = array())
+    public function critical($message, array $context = [])
     {
         $this->log('critical', $message, $context);
     }
 
-    public function error($message, array $context = array())
+    public function error($message, array $context = [])
     {
         $this->log('error', $message, $context);
     }
 
-    public function warning($message, array $context = array())
+    public function warning($message, array $context = [])
     {
         $this->log('warning', $message, $context);
     }
 
-    public function notice($message, array $context = array())
+    public function notice($message, array $context = [])
     {
         $this->log('notice', $message, $context);
     }
 
-    public function info($message, array $context = array())
+    public function info($message, array $context = [])
     {
         $this->log('info', $message, $context);
     }
 
-    public function debug($message, array $context = array())
+    public function debug($message, array $context = [])
     {
         $this->log('debug', $message, $context);
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Profiler/FileProfilerStorageTest.php b/src/Symfony/Component/HttpKernel/Tests/Profiler/FileProfilerStorageTest.php
index a1db1d9c0ec6..1cc05e41ec85 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Profiler/FileProfilerStorageTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Profiler/FileProfilerStorageTest.php
@@ -226,7 +226,7 @@ public function testRetrieveByEmptyUrlAndIp()
 
     public function testRetrieveByMethodAndLimit()
     {
-        foreach (array('POST', 'GET') as $method) {
+        foreach (['POST', 'GET'] as $method) {
             for ($i = 0; $i < 5; ++$i) {
                 $profile = new Profile('token_'.$i.$method);
                 $profile->setMethod($method);
@@ -293,8 +293,8 @@ public function testStatusCode()
 
         $tokens = $this->storage->find('', '', 10, '');
         $this->assertCount(2, $tokens);
-        $this->assertContains($tokens[0]['status_code'], array(200, 404));
-        $this->assertContains($tokens[1]['status_code'], array(200, 404));
+        $this->assertContains($tokens[0]['status_code'], [200, 404]);
+        $this->assertContains($tokens[1]['status_code'], [200, 404]);
     }
 
     public function testMultiRowIndexFile()
diff --git a/src/Symfony/Component/HttpKernel/Tests/Profiler/ProfilerTest.php b/src/Symfony/Component/HttpKernel/Tests/Profiler/ProfilerTest.php
index cff133c1aaa7..8f12e013a453 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Profiler/ProfilerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Profiler/ProfilerTest.php
@@ -44,7 +44,7 @@ public function testCollect()
     public function testReset()
     {
         $collector = $this->getMockBuilder(DataCollectorInterface::class)
-            ->setMethods(array('collect', 'getName', 'reset'))
+            ->setMethods(['collect', 'getName', 'reset'])
             ->getMock();
         $collector->expects($this->any())->method('getName')->willReturn('mock');
         $collector->expects($this->once())->method('reset');
diff --git a/src/Symfony/Component/HttpKernel/Tests/TestHttpKernel.php b/src/Symfony/Component/HttpKernel/Tests/TestHttpKernel.php
index fb95aa033b14..27ba2d6f8949 100644
--- a/src/Symfony/Component/HttpKernel/Tests/TestHttpKernel.php
+++ b/src/Symfony/Component/HttpKernel/Tests/TestHttpKernel.php
@@ -27,12 +27,12 @@ public function __construct()
 
     public function getController(Request $request)
     {
-        return array($this, 'callController');
+        return [$this, 'callController'];
     }
 
     public function getArguments(Request $request, $controller)
     {
-        return array($request);
+        return [$request];
     }
 
     public function callController(Request $request)
diff --git a/src/Symfony/Component/HttpKernel/UriSigner.php b/src/Symfony/Component/HttpKernel/UriSigner.php
index 63d1a0856f4b..481270da519e 100644
--- a/src/Symfony/Component/HttpKernel/UriSigner.php
+++ b/src/Symfony/Component/HttpKernel/UriSigner.php
@@ -47,7 +47,7 @@ public function sign($uri)
         if (isset($url['query'])) {
             parse_str($url['query'], $params);
         } else {
-            $params = array();
+            $params = [];
         }
 
         $uri = $this->buildUrl($url, $params);
@@ -69,7 +69,7 @@ public function check($uri)
         if (isset($url['query'])) {
             parse_str($url['query'], $params);
         } else {
-            $params = array();
+            $params = [];
         }
 
         if (empty($params[$this->parameter])) {
@@ -87,7 +87,7 @@ private function computeHash($uri)
         return base64_encode(hash_hmac('sha256', $uri, $this->secret, true));
     }
 
-    private function buildUrl(array $url, array $params = array())
+    private function buildUrl(array $url, array $params = [])
     {
         ksort($params, SORT_STRING);
         $url['query'] = http_build_query($params, '', '&');
diff --git a/src/Symfony/Component/Inflector/Inflector.php b/src/Symfony/Component/Inflector/Inflector.php
index a4bf3e39aff4..1d499ef87656 100644
--- a/src/Symfony/Component/Inflector/Inflector.php
+++ b/src/Symfony/Component/Inflector/Inflector.php
@@ -27,7 +27,7 @@ final class Inflector
      *
      * @see http://english-zone.com/spelling/plurals.html
      */
-    private static $pluralMap = array(
+    private static $pluralMap = [
         // First entry: plural suffix, reversed
         // Second entry: length of plural suffix
         // Third entry: Whether the suffix may succeed a vocal
@@ -35,109 +35,109 @@ final class Inflector
         // Fifth entry: singular suffix, normal
 
         // bacteria (bacterium), criteria (criterion), phenomena (phenomenon)
-        array('a', 1, true, true, array('on', 'um')),
+        ['a', 1, true, true, ['on', 'um']],
 
         // nebulae (nebula)
-        array('ea', 2, true, true, 'a'),
+        ['ea', 2, true, true, 'a'],
 
         // services (service)
-        array('secivres', 8, true, true, 'service'),
+        ['secivres', 8, true, true, 'service'],
 
         // mice (mouse), lice (louse)
-        array('eci', 3, false, true, 'ouse'),
+        ['eci', 3, false, true, 'ouse'],
 
         // geese (goose)
-        array('esee', 4, false, true, 'oose'),
+        ['esee', 4, false, true, 'oose'],
 
         // fungi (fungus), alumni (alumnus), syllabi (syllabus), radii (radius)
-        array('i', 1, true, true, 'us'),
+        ['i', 1, true, true, 'us'],
 
         // men (man), women (woman)
-        array('nem', 3, true, true, 'man'),
+        ['nem', 3, true, true, 'man'],
 
         // children (child)
-        array('nerdlihc', 8, true, true, 'child'),
+        ['nerdlihc', 8, true, true, 'child'],
 
         // oxen (ox)
-        array('nexo', 4, false, false, 'ox'),
+        ['nexo', 4, false, false, 'ox'],
 
         // indices (index), appendices (appendix), prices (price)
-        array('seci', 4, false, true, array('ex', 'ix', 'ice')),
+        ['seci', 4, false, true, ['ex', 'ix', 'ice']],
 
         // selfies (selfie)
-        array('seifles', 7, true, true, 'selfie'),
+        ['seifles', 7, true, true, 'selfie'],
 
         // movies (movie)
-        array('seivom', 6, true, true, 'movie'),
+        ['seivom', 6, true, true, 'movie'],
 
         // feet (foot)
-        array('teef', 4, true, true, 'foot'),
+        ['teef', 4, true, true, 'foot'],
 
         // geese (goose)
-        array('eseeg', 5, true, true, 'goose'),
+        ['eseeg', 5, true, true, 'goose'],
 
         // teeth (tooth)
-        array('hteet', 5, true, true, 'tooth'),
+        ['hteet', 5, true, true, 'tooth'],
 
         // news (news)
-        array('swen', 4, true, true, 'news'),
+        ['swen', 4, true, true, 'news'],
 
         // series (series)
-        array('seires', 6, true, true, 'series'),
+        ['seires', 6, true, true, 'series'],
 
         // babies (baby)
-        array('sei', 3, false, true, 'y'),
+        ['sei', 3, false, true, 'y'],
 
         // accesses (access), addresses (address), kisses (kiss)
-        array('sess', 4, true, false, 'ss'),
+        ['sess', 4, true, false, 'ss'],
 
         // analyses (analysis), ellipses (ellipsis), funguses (fungus),
         // neuroses (neurosis), theses (thesis), emphases (emphasis),
         // oases (oasis), crises (crisis), houses (house), bases (base),
         // atlases (atlas)
-        array('ses', 3, true, true, array('s', 'se', 'sis')),
+        ['ses', 3, true, true, ['s', 'se', 'sis']],
 
         // objectives (objective), alternative (alternatives)
-        array('sevit', 5, true, true, 'tive'),
+        ['sevit', 5, true, true, 'tive'],
 
         // drives (drive)
-        array('sevird', 6, false, true, 'drive'),
+        ['sevird', 6, false, true, 'drive'],
 
         // lives (life), wives (wife)
-        array('sevi', 4, false, true, 'ife'),
+        ['sevi', 4, false, true, 'ife'],
 
         // moves (move)
-        array('sevom', 5, true, true, 'move'),
+        ['sevom', 5, true, true, 'move'],
 
         // hooves (hoof), dwarves (dwarf), elves (elf), leaves (leaf), caves (cave), staves (staff)
-        array('sev', 3, true, true, array('f', 've', 'ff')),
+        ['sev', 3, true, true, ['f', 've', 'ff']],
 
         // axes (axis), axes (ax), axes (axe)
-        array('sexa', 4, false, false, array('ax', 'axe', 'axis')),
+        ['sexa', 4, false, false, ['ax', 'axe', 'axis']],
 
         // indexes (index), matrixes (matrix)
-        array('sex', 3, true, false, 'x'),
+        ['sex', 3, true, false, 'x'],
 
         // quizzes (quiz)
-        array('sezz', 4, true, false, 'z'),
+        ['sezz', 4, true, false, 'z'],
 
         // bureaus (bureau)
-        array('suae', 4, false, true, 'eau'),
+        ['suae', 4, false, true, 'eau'],
 
         // roses (rose), garages (garage), cassettes (cassette),
         // waltzes (waltz), heroes (hero), bushes (bush), arches (arch),
         // shoes (shoe)
-        array('se', 2, true, true, array('', 'e')),
+        ['se', 2, true, true, ['', 'e']],
 
         // tags (tag)
-        array('s', 1, true, true, ''),
+        ['s', 1, true, true, ''],
 
         // chateaux (chateau)
-        array('xuae', 4, false, true, 'eau'),
+        ['xuae', 4, false, true, 'eau'],
 
         // people (person)
-        array('elpoep', 6, true, true, 'person'),
-    );
+        ['elpoep', 6, true, true, 'person'],
+    ];
 
     /**
      * This class should not be instantiated.
@@ -207,7 +207,7 @@ public static function singularize($plural)
                     $firstUpper = ctype_upper($pluralRev[$j - 1]);
 
                     if (\is_array($newSuffix)) {
-                        $singulars = array();
+                        $singulars = [];
 
                         foreach ($newSuffix as $newSuffixEntry) {
                             $singulars[] = $newBase.($firstUpper ? ucfirst($newSuffixEntry) : $newSuffixEntry);
diff --git a/src/Symfony/Component/Inflector/Tests/InflectorTest.php b/src/Symfony/Component/Inflector/Tests/InflectorTest.php
index 8c40532a268d..87a959fa0afe 100644
--- a/src/Symfony/Component/Inflector/Tests/InflectorTest.php
+++ b/src/Symfony/Component/Inflector/Tests/InflectorTest.php
@@ -20,139 +20,139 @@ public function singularizeProvider()
     {
         // see http://english-zone.com/spelling/plurals.html
         // see http://www.scribd.com/doc/3271143/List-of-100-Irregular-Plural-Nouns-in-English
-        return array(
-            array('accesses', 'access'),
-            array('addresses', 'address'),
-            array('agendas', 'agenda'),
-            array('alumnae', 'alumna'),
-            array('alumni', 'alumnus'),
-            array('analyses', array('analys', 'analyse', 'analysis')),
-            array('antennae', 'antenna'),
-            array('antennas', 'antenna'),
-            array('appendices', array('appendex', 'appendix', 'appendice')),
-            array('arches', array('arch', 'arche')),
-            array('atlases', array('atlas', 'atlase', 'atlasis')),
-            array('axes', array('ax', 'axe', 'axis')),
-            array('babies', 'baby'),
-            array('bacteria', array('bacterion', 'bacterium')),
-            array('bases', array('bas', 'base', 'basis')),
-            array('batches', array('batch', 'batche')),
-            array('beaux', 'beau'),
-            array('bees', array('be', 'bee')),
-            array('boxes', 'box'),
-            array('boys', 'boy'),
-            array('bureaus', 'bureau'),
-            array('bureaux', 'bureau'),
-            array('buses', array('bus', 'buse', 'busis')),
-            array('bushes', array('bush', 'bushe')),
-            array('calves', array('calf', 'calve', 'calff')),
-            array('cars', 'car'),
-            array('cassettes', array('cassett', 'cassette')),
-            array('caves', array('caf', 'cave', 'caff')),
-            array('chateaux', 'chateau'),
-            array('cheeses', array('chees', 'cheese', 'cheesis')),
-            array('children', 'child'),
-            array('circuses', array('circus', 'circuse', 'circusis')),
-            array('cliffs', 'cliff'),
-            array('committee', 'committee'),
-            array('crises', array('cris', 'crise', 'crisis')),
-            array('criteria', array('criterion', 'criterium')),
-            array('cups', 'cup'),
-            array('data', array('daton', 'datum')),
-            array('days', 'day'),
-            array('discos', 'disco'),
-            array('devices', array('devex', 'devix', 'device')),
-            array('drives', 'drive'),
-            array('drivers', 'driver'),
-            array('dwarves', array('dwarf', 'dwarve', 'dwarff')),
-            array('echoes', array('echo', 'echoe')),
-            array('elves', array('elf', 'elve', 'elff')),
-            array('emphases', array('emphas', 'emphase', 'emphasis')),
-            array('faxes', 'fax'),
-            array('feet', 'foot'),
-            array('feedback', 'feedback'),
-            array('foci', 'focus'),
-            array('focuses', array('focus', 'focuse', 'focusis')),
-            array('formulae', 'formula'),
-            array('formulas', 'formula'),
-            array('fungi', 'fungus'),
-            array('funguses', array('fungus', 'funguse', 'fungusis')),
-            array('garages', array('garag', 'garage')),
-            array('geese', 'goose'),
-            array('halves', array('half', 'halve', 'halff')),
-            array('hats', 'hat'),
-            array('heroes', array('hero', 'heroe')),
-            array('hippopotamuses', array('hippopotamus', 'hippopotamuse', 'hippopotamusis')), //hippopotami
-            array('hoaxes', 'hoax'),
-            array('hooves', array('hoof', 'hoove', 'hooff')),
-            array('houses', array('hous', 'house', 'housis')),
-            array('indexes', 'index'),
-            array('indices', array('index', 'indix', 'indice')),
-            array('ions', 'ion'),
-            array('irises', array('iris', 'irise', 'irisis')),
-            array('kisses', 'kiss'),
-            array('knives', 'knife'),
-            array('lamps', 'lamp'),
-            array('leaves', array('leaf', 'leave', 'leaff')),
-            array('lice', 'louse'),
-            array('lives', 'life'),
-            array('matrices', array('matrex', 'matrix', 'matrice')),
-            array('matrixes', 'matrix'),
-            array('men', 'man'),
-            array('mice', 'mouse'),
-            array('moves', 'move'),
-            array('movies', 'movie'),
-            array('nebulae', 'nebula'),
-            array('neuroses', array('neuros', 'neurose', 'neurosis')),
-            array('news', 'news'),
-            array('oases', array('oas', 'oase', 'oasis')),
-            array('objectives', 'objective'),
-            array('oxen', 'ox'),
-            array('parties', 'party'),
-            array('people', 'person'),
-            array('persons', 'person'),
-            array('phenomena', array('phenomenon', 'phenomenum')),
-            array('photos', 'photo'),
-            array('pianos', 'piano'),
-            array('plateaux', 'plateau'),
-            array('poppies', 'poppy'),
-            array('prices', array('prex', 'prix', 'price')),
-            array('quizzes', 'quiz'),
-            array('radii', 'radius'),
-            array('roofs', 'roof'),
-            array('roses', array('ros', 'rose', 'rosis')),
-            array('sandwiches', array('sandwich', 'sandwiche')),
-            array('scarves', array('scarf', 'scarve', 'scarff')),
-            array('schemas', 'schema'), //schemata
-            array('selfies', 'selfie'),
-            array('series', 'series'),
-            array('services', 'service'),
-            array('sheriffs', 'sheriff'),
-            array('shoes', array('sho', 'shoe')),
-            array('spies', 'spy'),
-            array('staves', array('staf', 'stave', 'staff')),
-            array('stories', 'story'),
-            array('strata', array('straton', 'stratum')),
-            array('suitcases', array('suitcas', 'suitcase', 'suitcasis')),
-            array('syllabi', 'syllabus'),
-            array('tags', 'tag'),
-            array('teeth', 'tooth'),
-            array('theses', array('thes', 'these', 'thesis')),
-            array('thieves', array('thief', 'thieve', 'thieff')),
-            array('trees', array('tre', 'tree')),
-            array('waltzes', array('waltz', 'waltze')),
-            array('wives', 'wife'),
+        return [
+            ['accesses', 'access'],
+            ['addresses', 'address'],
+            ['agendas', 'agenda'],
+            ['alumnae', 'alumna'],
+            ['alumni', 'alumnus'],
+            ['analyses', ['analys', 'analyse', 'analysis']],
+            ['antennae', 'antenna'],
+            ['antennas', 'antenna'],
+            ['appendices', ['appendex', 'appendix', 'appendice']],
+            ['arches', ['arch', 'arche']],
+            ['atlases', ['atlas', 'atlase', 'atlasis']],
+            ['axes', ['ax', 'axe', 'axis']],
+            ['babies', 'baby'],
+            ['bacteria', ['bacterion', 'bacterium']],
+            ['bases', ['bas', 'base', 'basis']],
+            ['batches', ['batch', 'batche']],
+            ['beaux', 'beau'],
+            ['bees', ['be', 'bee']],
+            ['boxes', 'box'],
+            ['boys', 'boy'],
+            ['bureaus', 'bureau'],
+            ['bureaux', 'bureau'],
+            ['buses', ['bus', 'buse', 'busis']],
+            ['bushes', ['bush', 'bushe']],
+            ['calves', ['calf', 'calve', 'calff']],
+            ['cars', 'car'],
+            ['cassettes', ['cassett', 'cassette']],
+            ['caves', ['caf', 'cave', 'caff']],
+            ['chateaux', 'chateau'],
+            ['cheeses', ['chees', 'cheese', 'cheesis']],
+            ['children', 'child'],
+            ['circuses', ['circus', 'circuse', 'circusis']],
+            ['cliffs', 'cliff'],
+            ['committee', 'committee'],
+            ['crises', ['cris', 'crise', 'crisis']],
+            ['criteria', ['criterion', 'criterium']],
+            ['cups', 'cup'],
+            ['data', ['daton', 'datum']],
+            ['days', 'day'],
+            ['discos', 'disco'],
+            ['devices', ['devex', 'devix', 'device']],
+            ['drives', 'drive'],
+            ['drivers', 'driver'],
+            ['dwarves', ['dwarf', 'dwarve', 'dwarff']],
+            ['echoes', ['echo', 'echoe']],
+            ['elves', ['elf', 'elve', 'elff']],
+            ['emphases', ['emphas', 'emphase', 'emphasis']],
+            ['faxes', 'fax'],
+            ['feet', 'foot'],
+            ['feedback', 'feedback'],
+            ['foci', 'focus'],
+            ['focuses', ['focus', 'focuse', 'focusis']],
+            ['formulae', 'formula'],
+            ['formulas', 'formula'],
+            ['fungi', 'fungus'],
+            ['funguses', ['fungus', 'funguse', 'fungusis']],
+            ['garages', ['garag', 'garage']],
+            ['geese', 'goose'],
+            ['halves', ['half', 'halve', 'halff']],
+            ['hats', 'hat'],
+            ['heroes', ['hero', 'heroe']],
+            ['hippopotamuses', ['hippopotamus', 'hippopotamuse', 'hippopotamusis']], //hippopotami
+            ['hoaxes', 'hoax'],
+            ['hooves', ['hoof', 'hoove', 'hooff']],
+            ['houses', ['hous', 'house', 'housis']],
+            ['indexes', 'index'],
+            ['indices', ['index', 'indix', 'indice']],
+            ['ions', 'ion'],
+            ['irises', ['iris', 'irise', 'irisis']],
+            ['kisses', 'kiss'],
+            ['knives', 'knife'],
+            ['lamps', 'lamp'],
+            ['leaves', ['leaf', 'leave', 'leaff']],
+            ['lice', 'louse'],
+            ['lives', 'life'],
+            ['matrices', ['matrex', 'matrix', 'matrice']],
+            ['matrixes', 'matrix'],
+            ['men', 'man'],
+            ['mice', 'mouse'],
+            ['moves', 'move'],
+            ['movies', 'movie'],
+            ['nebulae', 'nebula'],
+            ['neuroses', ['neuros', 'neurose', 'neurosis']],
+            ['news', 'news'],
+            ['oases', ['oas', 'oase', 'oasis']],
+            ['objectives', 'objective'],
+            ['oxen', 'ox'],
+            ['parties', 'party'],
+            ['people', 'person'],
+            ['persons', 'person'],
+            ['phenomena', ['phenomenon', 'phenomenum']],
+            ['photos', 'photo'],
+            ['pianos', 'piano'],
+            ['plateaux', 'plateau'],
+            ['poppies', 'poppy'],
+            ['prices', ['prex', 'prix', 'price']],
+            ['quizzes', 'quiz'],
+            ['radii', 'radius'],
+            ['roofs', 'roof'],
+            ['roses', ['ros', 'rose', 'rosis']],
+            ['sandwiches', ['sandwich', 'sandwiche']],
+            ['scarves', ['scarf', 'scarve', 'scarff']],
+            ['schemas', 'schema'], //schemata
+            ['selfies', 'selfie'],
+            ['series', 'series'],
+            ['services', 'service'],
+            ['sheriffs', 'sheriff'],
+            ['shoes', ['sho', 'shoe']],
+            ['spies', 'spy'],
+            ['staves', ['staf', 'stave', 'staff']],
+            ['stories', 'story'],
+            ['strata', ['straton', 'stratum']],
+            ['suitcases', ['suitcas', 'suitcase', 'suitcasis']],
+            ['syllabi', 'syllabus'],
+            ['tags', 'tag'],
+            ['teeth', 'tooth'],
+            ['theses', ['thes', 'these', 'thesis']],
+            ['thieves', ['thief', 'thieve', 'thieff']],
+            ['trees', ['tre', 'tree']],
+            ['waltzes', ['waltz', 'waltze']],
+            ['wives', 'wife'],
 
             // test casing: if the first letter was uppercase, it should remain so
-            array('Men', 'Man'),
-            array('GrandChildren', 'GrandChild'),
-            array('SubTrees', array('SubTre', 'SubTree')),
+            ['Men', 'Man'],
+            ['GrandChildren', 'GrandChild'],
+            ['SubTrees', ['SubTre', 'SubTree']],
 
             // Known issues
             //array('insignia', 'insigne'),
             //array('insignias', 'insigne'),
             //array('rattles', 'rattle'),
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Intl/Collator/Collator.php b/src/Symfony/Component/Intl/Collator/Collator.php
index 6260e5f0006d..62b1ddc9953e 100644
--- a/src/Symfony/Component/Intl/Collator/Collator.php
+++ b/src/Symfony/Component/Intl/Collator/Collator.php
@@ -108,11 +108,11 @@ public static function create($locale)
      */
     public function asort(&$array, $sortFlag = self::SORT_REGULAR)
     {
-        $intlToPlainFlagMap = array(
+        $intlToPlainFlagMap = [
             self::SORT_REGULAR => \SORT_REGULAR,
             self::SORT_NUMERIC => \SORT_NUMERIC,
             self::SORT_STRING => \SORT_STRING,
-        );
+        ];
 
         $plainSortFlag = isset($intlToPlainFlagMap[$sortFlag]) ? $intlToPlainFlagMap[$sortFlag] : self::SORT_REGULAR;
 
diff --git a/src/Symfony/Component/Intl/Data/Bundle/Reader/BundleEntryReader.php b/src/Symfony/Component/Intl/Data/Bundle/Reader/BundleEntryReader.php
index 035166c1fb07..1efade5bd698 100644
--- a/src/Symfony/Component/Intl/Data/Bundle/Reader/BundleEntryReader.php
+++ b/src/Symfony/Component/Intl/Data/Bundle/Reader/BundleEntryReader.php
@@ -33,7 +33,7 @@ class BundleEntryReader implements BundleEntryReaderInterface
     /**
      * A mapping of locale aliases to locales.
      */
-    private $localeAliases = array();
+    private $localeAliases = [];
 
     /**
      * Creates an entry reader based on the given resource bundle reader.
@@ -76,7 +76,7 @@ public function readEntry($path, $locale, array $indices, $fallback = true)
         $readSucceeded = false;
         $exception = null;
         $currentLocale = $locale;
-        $testedLocales = array();
+        $testedLocales = [];
 
         while (null !== $currentLocale) {
             // Resolve any aliases to their target locales
diff --git a/src/Symfony/Component/Intl/Data/Generator/CurrencyDataGenerator.php b/src/Symfony/Component/Intl/Data/Generator/CurrencyDataGenerator.php
index e657b3823637..1be618d7878d 100644
--- a/src/Symfony/Component/Intl/Data/Generator/CurrencyDataGenerator.php
+++ b/src/Symfony/Component/Intl/Data/Generator/CurrencyDataGenerator.php
@@ -42,7 +42,7 @@ class CurrencyDataGenerator extends AbstractDataGenerator
     /**
      * Monetary units excluded from generation.
      */
-    private static $blacklist = array(
+    private static $blacklist = [
         self::UNKNOWN_CURRENCY_ID => true,
         self::EUROPEAN_COMPOSITE_UNIT_ID => true,
         self::EUROPEAN_MONETARY_UNIT_ID => true,
@@ -56,14 +56,14 @@ class CurrencyDataGenerator extends AbstractDataGenerator
         self::PALLADIUM_ID => true,
         self::SUCRE_ID => true,
         self::SPECIAL_DRAWING_RIGHTS_ID => true,
-    );
+    ];
 
     /**
      * Collects all available currency codes.
      *
      * @var string[]
      */
-    private $currencyCodes = array();
+    private $currencyCodes = [];
 
     /**
      * {@inheritdoc}
@@ -87,7 +87,7 @@ protected function compileTemporaryBundles(GenrbCompiler $compiler, $sourceDir,
      */
     protected function preGenerate()
     {
-        $this->currencyCodes = array();
+        $this->currencyCodes = [];
     }
 
     /**
@@ -98,10 +98,10 @@ protected function generateDataForLocale(BundleReaderInterface $reader, $tempDir
         $localeBundle = $reader->read($tempDir, $displayLocale);
 
         if (isset($localeBundle['Currencies']) && null !== $localeBundle['Currencies']) {
-            $data = array(
+            $data = [
                 'Version' => $localeBundle['Version'],
                 'Names' => $this->generateSymbolNamePairs($localeBundle),
-            );
+            ];
 
             $this->currencyCodes = array_merge($this->currencyCodes, array_keys($data['Names']));
 
@@ -116,10 +116,10 @@ protected function generateDataForRoot(BundleReaderInterface $reader, $tempDir)
     {
         $rootBundle = $reader->read($tempDir, 'root');
 
-        return array(
+        return [
             'Version' => $rootBundle['Version'],
             'Names' => $this->generateSymbolNamePairs($rootBundle),
-        );
+        ];
     }
 
     /**
@@ -135,12 +135,12 @@ protected function generateDataForMeta(BundleReaderInterface $reader, $tempDir)
 
         sort($this->currencyCodes);
 
-        $data = array(
+        $data = [
             'Version' => $rootBundle['Version'],
             'Currencies' => $this->currencyCodes,
             'Meta' => $this->generateCurrencyMeta($supplementalDataBundle),
             'Alpha3ToNumeric' => $this->generateAlpha3ToNumericMapping($numericCodesBundle, $this->currencyCodes),
-        );
+        ];
 
         $data['NumericToAlpha3'] = $this->generateNumericToAlpha3Mapping($data['Alpha3ToNumeric']);
 
@@ -181,14 +181,14 @@ private function generateAlpha3ToNumericMapping(ArrayAccessibleResourceBundle $n
 
     private function generateNumericToAlpha3Mapping(array $alpha3ToNumericMapping)
     {
-        $numericToAlpha3Mapping = array();
+        $numericToAlpha3Mapping = [];
 
         foreach ($alpha3ToNumericMapping as $alpha3 => $numeric) {
             // Make sure that the mapping is stored as table and not as array
             $numeric = (string) $numeric;
 
             if (!isset($numericToAlpha3Mapping[$numeric])) {
-                $numericToAlpha3Mapping[$numeric] = array();
+                $numericToAlpha3Mapping[$numeric] = [];
             }
 
             $numericToAlpha3Mapping[$numeric][] = $alpha3;
diff --git a/src/Symfony/Component/Intl/Data/Generator/GeneratorConfig.php b/src/Symfony/Component/Intl/Data/Generator/GeneratorConfig.php
index 9bb9304db015..230b3434193e 100644
--- a/src/Symfony/Component/Intl/Data/Generator/GeneratorConfig.php
+++ b/src/Symfony/Component/Intl/Data/Generator/GeneratorConfig.php
@@ -28,7 +28,7 @@ class GeneratorConfig
     /**
      * @var BundleWriterInterface[]
      */
-    private $bundleWriters = array();
+    private $bundleWriters = [];
 
     /**
      * @param string $sourceDir
diff --git a/src/Symfony/Component/Intl/Data/Generator/LanguageDataGenerator.php b/src/Symfony/Component/Intl/Data/Generator/LanguageDataGenerator.php
index 9b3cf0a40682..e59eb4db9bf2 100644
--- a/src/Symfony/Component/Intl/Data/Generator/LanguageDataGenerator.php
+++ b/src/Symfony/Component/Intl/Data/Generator/LanguageDataGenerator.php
@@ -29,7 +29,7 @@ class LanguageDataGenerator extends AbstractDataGenerator
     /**
      * Source: http://www-01.sil.org/iso639-3/codes.asp.
      */
-    private static $preferredAlpha2ToAlpha3Mapping = array(
+    private static $preferredAlpha
10000
2ToAlpha3Mapping = [
         'ak' => 'aka',
         'ar' => 'ara',
         'ay' => 'aym',
@@ -81,14 +81,14 @@ class LanguageDataGenerator extends AbstractDataGenerator
         'yi' => 'yid',
         'za' => 'zha',
         'zh' => 'zho',
-    );
+    ];
 
     /**
      * Collects all available language codes.
      *
      * @var string[]
      */
-    private $languageCodes = array();
+    private $languageCodes = [];
 
     /**
      * {@inheritdoc}
@@ -112,7 +112,7 @@ protected function compileTemporaryBundles(GenrbCompiler $compiler, $sourceDir,
      */
     protected function preGenerate()
     {
-        $this->languageCodes = array();
+        $this->languageCodes = [];
     }
 
     /**
@@ -124,10 +124,10 @@ protected function generateDataForLocale(BundleReaderInterface $reader, $tempDir
 
         // isset() on \ResourceBundle returns true even if the value is null
         if (isset($localeBundle['Languages']) && null !== $localeBundle['Languages']) {
-            $data = array(
+            $data = [
                 'Version' => $localeBundle['Version'],
                 'Names' => iterator_to_array($localeBundle['Languages']),
-            );
+            ];
 
             $this->languageCodes = array_merge($this->languageCodes, array_keys($data['Names']));
 
@@ -154,18 +154,18 @@ protected function generateDataForMeta(BundleReaderInterface $reader, $tempDir)
 
         sort($this->languageCodes);
 
-        return array(
+        return [
             'Version' => $rootBundle['Version'],
             'Languages' => $this->languageCodes,
             'Aliases' => array_column(iterator_to_array($metadataBundle['alias']['language']), 'replacement'),
             'Alpha2ToAlpha3' => $this->generateAlpha2ToAlpha3Mapping($metadataBundle),
-        );
+        ];
     }
 
     private function generateAlpha2ToAlpha3Mapping(ArrayAccessibleResourceBundle $metadataBundle)
     {
         $aliases = iterator_to_array($metadataBundle['alias']['language']);
-        $alpha2ToAlpha3 = array();
+        $alpha2ToAlpha3 = [];
 
         foreach ($aliases as $alias => $language) {
             $language = $language['replacement'];
diff --git a/src/Symfony/Component/Intl/Data/Generator/LocaleDataGenerator.php b/src/Symfony/Component/Intl/Data/Generator/LocaleDataGenerator.php
index e2cf6d31581c..5e0c0a6a1ba6 100644
--- a/src/Symfony/Component/Intl/Data/Generator/LocaleDataGenerator.php
+++ b/src/Symfony/Component/Intl/Data/Generator/LocaleDataGenerator.php
@@ -70,12 +70,12 @@ public function generateData(GeneratorConfig $config)
         // Generate a list of (existing) locale fallbacks
         $fallbackMapping = $this->generateFallbackMapping($displayLocales, $aliases);
 
-        $localeNames = array();
+        $localeNames = [];
 
         // Generate locale names for all locales that have translations in
         // at least the language or the region bundle
         foreach ($displayLocales as $displayLocale => $_) {
-            $localeNames[$displayLocale] = array();
+            $localeNames[$displayLocale] = [];
 
             foreach ($locales as $locale) {
                 try {
@@ -111,9 +111,9 @@ public function generateData(GeneratorConfig $config)
             }
 
             foreach ($writers as $targetDir => $writer) {
-                $writer->write($targetDir.'/'.$this->dirName, $displayLocale, array(
+                $writer->write($targetDir.'/'.$this->dirName, $displayLocale, [
                     'Names' => $localeNames[$displayLocale],
-                ));
+                ]);
             }
         }
 
@@ -121,18 +121,18 @@ public function generateData(GeneratorConfig $config)
         // target
         foreach ($aliases as $alias => $aliasOf) {
             foreach ($writers as $targetDir => $writer) {
-                $writer->write($targetDir.'/'.$this->dirName, $alias, array(
+                $writer->write($targetDir.'/'.$this->dirName, $alias, [
                     '%%ALIAS' => $aliasOf,
-                ));
+                ]);
             }
         }
 
         // Create root file which maps locale codes to locale codes, for fallback
         foreach ($writers as $targetDir => $writer) {
-            $writer->write($targetDir.'/'.$this->dirName, 'meta', array(
+            $writer->write($targetDir.'/'.$this->dirName, 'meta', [
                 'Locales' => $locales,
                 'Aliases' => $aliases,
-            ));
+            ]);
         }
     }
 
@@ -168,7 +168,7 @@ private function generateLocaleName($locale, $displayLocale)
         //    continue;
         //}
 
-        $extras = array();
+        $extras = [];
 
         // Discover the name of the script part of the locale
         // i.e. in zh_Hans_MO, "Hans" is the script
@@ -209,7 +209,7 @@ private function generateLocaleName($locale, $displayLocale)
 
     private function generateFallbackMapping(array $displayLocales, array $aliases)
     {
-        $mapping = array();
+        $mapping = [];
 
         foreach ($displayLocales as $displayLocale => $_) {
             $mapping[$displayLocale] = null;
diff --git a/src/Symfony/Component/Intl/Data/Generator/RegionDataGenerator.php b/src/Symfony/Component/Intl/Data/Generator/RegionDataGenerator.php
index 920e2e311b04..0728db80309b 100644
--- a/src/Symfony/Component/Intl/Data/Generator/RegionDataGenerator.php
+++ b/src/Symfony/Component/Intl/Data/Generator/RegionDataGenerator.php
@@ -40,7 +40,7 @@ class RegionDataGenerator extends AbstractDataGenerator
     /**
      * Regions excluded from generation.
      */
-    private static $blacklist = array(
+    private static $blacklist = [
         self::UNKNOWN_REGION_ID => true,
         // Look like countries, but are sub-continents
         self::OUTLYING_OCEANIA_REGION_ID => true,
@@ -53,14 +53,14 @@ class RegionDataGenerator extends AbstractDataGenerator
         self::BOUVET_ISLAND_ID => true,
         self::HEARD_MCDONALD_ISLANDS_ID => true,
         self::CLIPPERTON_ISLAND_ID => true,
-    );
+    ];
 
     /**
      * Collects all available language codes.
      *
      * @var string[]
      */
-    private $regionCodes = array();
+    private $regionCodes = [];
 
     /**
      * {@inheritdoc}
@@ -83,7 +83,7 @@ protected function compileTemporaryBundles(GenrbCompiler $compiler, $sourceDir,
      */
     protected function preGenerate()
     {
-        $this->regionCodes = array();
+        $this->regionCodes = [];
     }
 
     /**
@@ -95,10 +95,10 @@ protected function generateDataForLocale(BundleReaderInterface $reader, $tempDir
 
         // isset() on \ResourceBundle returns true even if the value is null
         if (isset($localeBundle['Countries']) && null !== $localeBundle['Countries']) {
-            $data = array(
+            $data = [
                 'Version' => $localeBundle['Version'],
                 'Names' => $this->generateRegionNames($localeBundle),
-            );
+            ];
 
             $this->regionCodes = array_merge($this->regionCodes, array_keys($data['Names']));
 
@@ -124,10 +124,10 @@ protected function generateDataForMeta(BundleReaderInterface $reader, $tempDir)
 
         sort($this->regionCodes);
 
-        return array(
+        return [
             'Version' => $rootBundle['Version'],
             'Regions' => $this->regionCodes,
-        );
+        ];
     }
 
     /**
@@ -136,7 +136,7 @@ protected function generateDataForMeta(BundleReaderInterface $reader, $tempDir)
     protected function generateRegionNames(ArrayAccessibleResourceBundle $localeBundle)
     {
         $unfilteredRegionNames = iterator_to_array($localeBundle['Countries']);
-        $regionNames = array();
+        $regionNames = [];
 
         foreach ($unfilteredRegionNames as $region => $regionName) {
             if (isset(self::$blacklist[$region])) {
diff --git a/src/Symfony/Component/Intl/Data/Generator/ScriptDataGenerator.php b/src/Symfony/Component/Intl/Data/Generator/ScriptDataGenerator.php
index 7ba6bbe69298..7ed0625262f6 100644
--- a/src/Symfony/Component/Intl/Data/Generator/ScriptDataGenerator.php
+++ b/src/Symfony/Component/Intl/Data/Generator/ScriptDataGenerator.php
@@ -29,7 +29,7 @@ class ScriptDataGenerator extends AbstractDataGenerator
      *
      * @var string[]
      */
-    private $scriptCodes = array();
+    private $scriptCodes = [];
 
     /**
      * {@inheritdoc}
@@ -52,7 +52,7 @@ protected function compileTemporaryBundles(GenrbCompiler $compiler, $sourceDir,
      */
     protected function preGenerate()
     {
-        $this->scriptCodes = array();
+        $this->scriptCodes = [];
     }
 
     /**
@@ -64,10 +64,10 @@ protected function generateDataForLocale(BundleReaderInterface $reader, $tempDir
 
         // isset() on \ResourceBundle returns true even if the value is null
         if (isset($localeBundle['Scripts']) && null !== $localeBundle['Scripts']) {
-            $data = array(
+            $data = [
                 'Version' => $localeBundle['Version'],
                 'Names' => iterator_to_array($localeBundle['Scripts']),
-            );
+            ];
 
             $this->scriptCodes = array_merge($this->scriptCodes, array_keys($data['Names']));
 
@@ -93,9 +93,9 @@ protected function generateDataForMeta(BundleReaderInterface $reader, $tempDir)
 
         sort($this->scriptCodes);
 
-        return array(
+        return [
             'Version' => $rootBundle['Version'],
             'Scripts' => $this->scriptCodes,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/Data/Provider/CurrencyDataProvider.php b/src/Symfony/Component/Intl/Data/Provider/CurrencyDataProvider.php
index 5cf5fc24be53..dacde26f8370 100644
--- a/src/Symfony/Component/Intl/Data/Provider/CurrencyDataProvider.php
+++ b/src/Symfony/Component/Intl/Data/Provider/CurrencyDataProvider.php
@@ -47,7 +47,7 @@ public function __construct($path, BundleEntryReaderInterface $reader)
 
     public function getCurrencies()
     {
-        return $this->reader->readEntry($this->path, 'meta', array('Currencies'));
+        return $this->reader->readEntry($this->path, 'meta', ['Currencies']);
     }
 
     public function getSymbol($currency, $displayLocale = null)
@@ -56,7 +56,7 @@ public function getSymbol($currency, $displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        return $this->reader->readEntry($this->path, $displayLocale, array('Names', $currency, static::INDEX_SYMBOL));
+        return $this->reader->readEntry($this->path, $displayLocale, ['Names', $currency, static::INDEX_SYMBOL]);
     }
 
     public function getName($currency, $displayLocale = null)
@@ -65,7 +65,7 @@ public function getName($currency, $displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        return $this->reader->readEntry($this->path, $displayLocale, array('Names', $currency, static::INDEX_NAME));
+        return $this->reader->readEntry($this->path, $displayLocale, ['Names', $currency, static::INDEX_NAME]);
     }
 
     public function getNames($displayLocale = null)
@@ -80,7 +80,7 @@ public function getNames($displayLocale = null)
         // 3-letter codes (e.g. 32 => "ARA", "ARP", "ARS")
         // ====================================================================
 
-        $names = $this->reader->readEntry($this->path, $displayLocale, array('Names'));
+        $names = $this->reader->readEntry($this->path, $displayLocale, ['Names']);
 
         if ($names instanceof \Traversable) {
             $names = iterator_to_array($names);
@@ -106,9 +106,9 @@ public function getNames($displayLocale = null)
     public function getFractionDigits($currency)
     {
         try {
-            return $this->reader->readEntry($this->path, 'meta', array('Meta', $currency, static::INDEX_FRACTION_DIGITS));
+            return $this->reader->readEntry($this->path, 'meta', ['Meta', $currency, static::INDEX_FRACTION_DIGITS]);
         } catch (MissingResourceException $e) {
-            return $this->reader->readEntry($this->path, 'meta', array('Meta', 'DEFAULT', static::INDEX_FRACTION_DIGITS));
+            return $this->reader->readEntry($this->path, 'meta', ['Meta', 'DEFAULT', static::INDEX_FRACTION_DIGITS]);
         }
     }
 
@@ -118,9 +118,9 @@ public function getFractionDigits($currency)
     public function getRoundingIncrement($currency)
     {
         try {
-            return $this->reader->readEntry($this->path, 'meta', array('Meta', $currency, static::INDEX_ROUNDING_INCREMENT));
+            return $this->reader->readEntry($this->path, 'meta', ['Meta', $currency, static::INDEX_ROUNDING_INCREMENT]);
         } catch (MissingResourceException $e) {
-            return $this->reader->readEntry($this->path, 'meta', array('Meta', 'DEFAULT', static::INDEX_ROUNDING_INCREMENT));
+            return $this->reader->readEntry($this->path, 'meta', ['Meta', 'DEFAULT', static::INDEX_ROUNDING_INCREMENT]);
         }
     }
 
@@ -129,7 +129,7 @@ public function getRoundingIncrement($currency)
      */
     public function getNumericCode($currency)
     {
-        return $this->reader->readEntry($this->path, 'meta', array('Alpha3ToNumeric', $currency));
+        return $this->reader->readEntry($this->path, 'meta', ['Alpha3ToNumeric', $currency]);
     }
 
     /**
@@ -137,6 +137,6 @@ public function getNumericCode($currency)
      */
     public function forNumericCode($numericCode)
     {
-        return $this->reader->readEntry($this->path, 'meta', array('NumericToAlpha3', (string) $numericCode));
+        return $this->reader->readEntry($this->path, 'meta', ['NumericToAlpha3', (string) $numericCode]);
     }
 }
diff --git a/src/Symfony/Component/Intl/Data/Provider/LanguageDataProvider.php b/src/Symfony/Component/Intl/Data/Provider/LanguageDataProvider.php
index 2a2084e9556f..2178158513e4 100644
--- a/src/Symfony/Component/Intl/Data/Provider/LanguageDataProvider.php
+++ b/src/Symfony/Component/Intl/Data/Provider/LanguageDataProvider.php
@@ -40,12 +40,12 @@ public function __construct($path, BundleEntryReaderInterface $reader)
 
     public function getLanguages()
     {
-        return $this->reader->readEntry($this->path, 'meta', array('Languages'));
+        return $this->reader->readEntry($this->path, 'meta', ['Languages']);
     }
 
     public function getAliases()
     {
-        return $this->reader->readEntry($this->path, 'root', array('Aliases'));
+        return $this->reader->readEntry($this->path, 'root', ['Aliases']);
     }
 
     public function getName($language, $displayLocale = null)
@@ -54,7 +54,7 @@ public function getName($language, $displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        return $this->reader->readEntry($this->path, $displayLocale, array('Names', $language));
+        return $this->reader->readEntry($this->path, $displayLocale, ['Names', $language]);
     }
 
     public function getNames($displayLocale = null)
@@ -63,7 +63,7 @@ public function getNames($displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        $languages = $this->reader->readEntry($this->path, $displayLocale, array('Names'));
+        $languages = $this->reader->readEntry($this->path, $displayLocale, ['Names']);
 
         if ($languages instanceof \Traversable) {
             $languages = iterator_to_array($languages);
@@ -77,6 +77,6 @@ public function getNames($displayLocale = null)
 
     public function getAlpha3Code($language)
     {
-        return $this->reader->readEntry($this->path, 'meta', array('Alpha2ToAlpha3', $language));
+        return $this->reader->readEntry($this->path, 'meta', ['Alpha2ToAlpha3', $language]);
     }
 }
diff --git a/src/Symfony/Component/Intl/Data/Provider/LocaleDataProvider.php b/src/Symfony/Component/Intl/Data/Provider/LocaleDataProvider.php
index 0eb82f621e15..4328b57d2f09 100644
--- a/src/Symfony/Component/Intl/Data/Provider/LocaleDataProvider.php
+++ b/src/Symfony/Component/Intl/Data/Provider/LocaleDataProvider.php
@@ -40,12 +40,12 @@ public function __construct($path, BundleEntryReaderInterface $reader)
 
     public function getLocales()
     {
-        return $this->reader->readEntry($this->path, 'meta', array('Locales'));
+        return $this->reader->readEntry($this->path, 'meta', ['Locales']);
     }
 
     public function getAliases()
     {
-        $aliases = $this->reader->readEntry($this->path, 'meta', array('Aliases'));
+        $aliases = $this->reader->readEntry($this->path, 'meta', ['Aliases']);
 
         if ($aliases instanceof \Traversable) {
             $aliases = iterator_to_array($aliases);
@@ -60,7 +60,7 @@ public function getName($locale, $displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        return $this->reader->readEntry($this->path, $displayLocale, array('Names', $locale));
+        return $this->reader->readEntry($this->path, $displayLocale, ['Names', $locale]);
     }
 
     public function getNames($displayLocale = null)
@@ -69,7 +69,7 @@ public function getNames($displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        $names = $this->reader->readEntry($this->path, $displayLocale, array('Names'));
+        $names = $this->reader->readEntry($this->path, $displayLocale, ['Names']);
 
         if ($names instanceof \Traversable) {
             $names = iterator_to_array($names);
diff --git a/src/Symfony/Component/Intl/Data/Provider/RegionDataProvider.php b/src/Symfony/Component/Intl/Data/Provider/RegionDataProvider.php
index d3c8164158a9..08bd724394d9 100644
--- a/src/Symfony/Component/Intl/Data/Provider/RegionDataProvider.php
+++ b/src/Symfony/Component/Intl/Data/Provider/RegionDataProvider.php
@@ -40,7 +40,7 @@ public function __construct($path, BundleEntryReaderInterface $reader)
 
     public function getRegions()
     {
-        return $this->reader->readEntry($this->path, 'meta', array('Regions'));
+        return $this->reader->readEntry($this->path, 'meta', ['Regions']);
     }
 
     public function getName($region, $displayLocale = null)
@@ -49,7 +49,7 @@ public function getName($region, $displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        return $this->reader->readEntry($this->path, $displayLocale, array('Names', $region));
+        return $this->reader->readEntry($this->path, $displayLocale, ['Names', $region]);
     }
 
     public function getNames($displayLocale = null)
@@ -58,7 +58,7 @@ public function getNames($displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        $names = $this->reader->readEntry($this->path, $displayLocale, array('Names'));
+        $names = $this->reader->readEntry($this->path, $displayLocale, ['Names']);
 
         if ($names instanceof \Traversable) {
             $names = iterator_to_array($names);
diff --git a/src/Symfony/Component/Intl/Data/Provider/ScriptDataProvider.php b/src/Symfony/Component/Intl/Data/Provider/ScriptDataProvider.php
index 29ff1d63ae9b..c6844494a89f 100644
--- a/src/Symfony/Component/Intl/Data/Provider/ScriptDataProvider.php
+++ b/src/Symfony/Component/Intl/Data/Provider/ScriptDataProvider.php
@@ -40,7 +40,7 @@ public function __construct($path, BundleEntryReaderInterface $reader)
 
     public function getScripts()
     {
-        return $this->reader->readEntry($this->path, 'meta', array('Scripts'));
+        return $this->reader->readEntry($this->path, 'meta', ['Scripts']);
     }
 
     public function getName($script, $displayLocale = null)
@@ -49,7 +49,7 @@ public function getName($script, $displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        return $this->reader->readEntry($this->path, $displayLocale, array('Names', $script));
+        return $this->reader->readEntry($this->path, $displayLocale, ['Names', $script]);
     }
 
     public function getNames($displayLocale = null)
@@ -58,7 +58,7 @@ public function getNames($displayLocale = null)
             $displayLocale = Locale::getDefault();
         }
 
-        $names = $this->reader->readEntry($this->path, $displayLocale, array('Names'));
+        $names = $this->reader->readEntry($this->path, $displayLocale, ['Names']);
 
         if ($names instanceof \Traversable) {
             $names = iterator_to_array($names);
diff --git a/src/Symfony/Component/Intl/Data/Util/LocaleScanner.php b/src/Symfony/Component/Intl/Data/Util/LocaleScanner.php
index 0604593f6e1d..ba0a6c5f0839 100644
--- a/src/Symfony/Component/Intl/Data/Util/LocaleScanner.php
+++ b/src/Symfony/Component/Intl/Data/Util/LocaleScanner.php
@@ -68,7 +68,7 @@ public function scanLocales($sourceDir)
     public function scanAliases($sourceDir)
     {
         $locales = $this->scanLocales($sourceDir);
-        $aliases = array();
+        $aliases = [];
 
         // Delete locales that are no aliases
         foreach ($locales as $locale) {
diff --git a/src/Symfony/Component/Intl/Data/Util/RingBuffer.php b/src/Symfony/Component/Intl/Data/Util/RingBuffer.php
index 1ab1a301497a..9f82d86ea189 100644
--- a/src/Symfony/Component/Intl/Data/Util/RingBuffer.php
+++ b/src/Symfony/Component/Intl/Data/Util/RingBuffer.php
@@ -26,9 +26,9 @@
  */
 class RingBuffer implements \ArrayAccess
 {
-    private $values = array();
+    private $values = [];
 
-    private $indices = array();
+    private $indices = [];
 
     private $cursor = 0;
 
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/AmPmTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/AmPmTransformer.php
index 66376475c666..2593cd8966eb 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/AmPmTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/AmPmTransformer.php
@@ -41,8 +41,8 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'marker' => $matched,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayOfWeekTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayOfWeekTransformer.php
index a174fdcabc57..1da32cd0791a 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayOfWeekTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayOfWeekTransformer.php
@@ -60,6 +60,6 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayOfYearTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayOfYearTransformer.php
index 5af6dd724336..8b48371f60c6 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayOfYearTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayOfYearTransformer.php
@@ -43,6 +43,6 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayTransformer.php
index f0ded907c33c..c07855df1c8d 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/DayTransformer.php
@@ -41,8 +41,8 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'day' => (int) $matched,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/FullTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/FullTransformer.php
index 8202516887e5..9c0d86ef05bd 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/FullTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/FullTransformer.php
@@ -49,7 +49,7 @@ public function __construct($pattern, $timezone)
         $notImplementedCharsMatch = $this->buildCharsMatch($this->notImplementedChars);
         $this->regExp = "/($this->quoteMatch|$implementedCharsMatch|$notImplementedCharsMatch)/";
 
-        $this->transformers = array(
+        $this->transformers = [
             'M' => new MonthTransformer(),
             'L' => new MonthTransformer(),
             'y' => new YearTransformer(),
@@ -66,7 +66,7 @@ public function __construct($pattern, $timezone)
             'm' => new MinuteTransformer(),
             's' => new SecondTransformer(),
             'z' => new TimezoneTransformer(),
-        );
+        ];
     }
 
     /**
@@ -140,7 +140,7 @@ public function parse(\DateTime $dateTime, $value)
         $reverseMatchingRegExp = $this->getReverseMatchingRegExp($this->pattern);
         $reverseMatchingRegExp = '/^'.$reverseMatchingRegExp.'$/';
 
-        $options = array();
+        $options = [];
 
         if (preg_match($reverseMatchingRegExp, $value, $matches)) {
             $matches = $this->normalizeArray($matches);
@@ -255,17 +255,17 @@ protected function buildCharsMatch($specialChars)
      */
     protected function normalizeArray(array $data)
     {
-        $ret = array();
+        $ret = [];
 
         foreach ($data as $key => $value) {
             if (!\is_string($key)) {
                 continue;
             }
 
-            $ret[$key[0]] = array(
+            $ret[$key[0]] = [
                 'value' => $value,
                 'pattern' => $key,
-            );
+            ];
         }
 
         return $ret;
@@ -332,7 +332,7 @@ protected function calculateUnixTimestamp(\DateTime $dateTime, array $options)
      */
     private function getDefaultValueForOptions(array $options)
     {
-        return array(
+        return [
             'year' => isset($options['year']) ? $options['year'] : 1970,
             'month' => isset($options['month']) ? $options['month'] : 1,
             'day' => isset($options['day']) ? $options['day'] : 1,
@@ -342,6 +342,6 @@ private function getDefaultValueForOptions(array $options)
             'second' => isset($options['second']) ? $options['second'] : 0,
             'marker' => isset($options['marker']) ? $options['marker'] : null,
             'timezone' => isset($options['timezone']) ? $options['timezone'] : null,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour1200Transformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour1200Transformer.php
index 948e3450443e..157d242875ef 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour1200Transformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour1200Transformer.php
@@ -56,9 +56,9 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'hour' => (int) $matched,
             'hourInstance' => $this,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour1201Transformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour1201Transformer.php
index 19c4d203abe0..7e704b04e340 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour1201Transformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour1201Transformer.php
@@ -56,9 +56,9 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'hour' => (int) $matched,
             'hourInstance' => $this,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour2400Transformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour2400Transformer.php
index e43d0ee8b2ae..904a03691f37 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour2400Transformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour2400Transformer.php
@@ -55,9 +55,9 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'hour' => (int) $matched,
             'hourInstance' => $this,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour2401Transformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour2401Transformer.php
index df4e671aaf02..e2988d852a65 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour2401Transformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/Hour2401Transformer.php
@@ -58,9 +58,9 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'hour' => (int) $matched,
             'hourInstance' => $this,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/MinuteTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/MinuteTransformer.php
index 08b5356e3fbd..d0ba82e1a9ae 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/MinuteTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/MinuteTransformer.php
@@ -43,8 +43,8 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'minute' => (int) $matched,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/MonthTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/MonthTransformer.php
index cc917ef82b38..40ab1d67d729 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/MonthTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/MonthTransformer.php
@@ -20,7 +20,7 @@
  */
 class MonthTransformer extends Transformer
 {
-    protected static $months = array(
+    protected static $months = [
         'January',
         'February',
         'March',
@@ -33,22 +33,22 @@ class MonthTransformer extends Transformer
         'October',
         'November',
         'December',
-    );
+    ];
 
     /**
      * Short months names (first 3 letters).
      */
-    protected static $shortMonths = array();
+    protected static $shortMonths = [];
 
     /**
      * Flipped $months array, $name => $index.
      */
-    protected static $flippedMonths = array();
+    protected static $flippedMonths = [];
 
     /**
      * Flipped $shortMonths array, $name => $index.
      */
-    protected static $flippedShortMonths = array();
+    protected static $flippedShortMonths = [];
 
     public function __construct()
     {
@@ -67,12 +67,12 @@ public function __construct()
      */
     public function format(\DateTime $dateTime, $length)
     {
-        $matchLengthMap = array(
+        $matchLengthMap = [
             1 => 'n',
             2 => 'm',
             3 => 'M',
             4 => 'F',
-        );
+        ];
 
         if (isset($matchLengthMap[$length])) {
             return $dateTime->format($matchLengthMap[$length]);
@@ -129,8 +129,8 @@ public function extractDateOptions($matched, $length)
             $matched = (int) $matched;
         }
 
-        return array(
+        return [
             'month' => $matched,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/QuarterTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/QuarterTransformer.php
index fa7e91d038f8..d8ef0674feed 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/QuarterTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/QuarterTransformer.php
@@ -34,7 +34,7 @@ public function format(\DateTime $dateTime, $length)
             case 3:
                 return 'Q'.$quarter;
             default:
-                $map = array(1 => '1st quarter', 2 => '2nd quarter', 3 => '3rd quarter', 4 => '4th quarter');
+                $map = [1 => '1st quarter', 2 => '2nd quarter', 3 => '3rd quarter', 4 => '4th quarter'];
 
                 return $map[$quarter];
         }
@@ -61,6 +61,6 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/SecondTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/SecondTransformer.php
index dd2e7bd9f9bb..b1054c478c41 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/SecondTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/SecondTransformer.php
@@ -43,8 +43,8 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'second' => (int) $matched,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/TimezoneTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/TimezoneTransformer.php
index d8f50119b093..c77fbc160b5b 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/TimezoneTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/TimezoneTransformer.php
@@ -31,7 +31,7 @@ public function format(\DateTime $dateTime, $length)
     {
         $timeZone = substr($dateTime->getTimezone()->getName(), 0, 3);
 
-        if (!\in_array($timeZone, array('Etc', 'UTC', 'GMT'))) {
+        if (!\in_array($timeZone, ['Etc', 'UTC', 'GMT'])) {
             throw new NotImplementedException('Time zone different than GMT or UTC is not supported as a formatting output.');
         }
 
@@ -41,7 +41,7 @@ public function format(\DateTime $dateTime, $length)
         }
 
         // From ICU >= 59.1 GMT and UTC are no longer unified
-        if (\in_array($timeZone, array('UTC', 'UCT', 'Universal', 'Zulu'))) {
+        if (\in_array($timeZone, ['UTC', 'UCT', 'Universal', 'Zulu'])) {
             // offset is not supported with UTC
             return $length > 3 ? 'Coordinated Universal Time' : 'UTC';
         }
@@ -73,9 +73,9 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'timezone' => self::getEtcTimeZoneId($matched),
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/YearTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/YearTransformer.php
index 0b546b774a40..043e6f321c2f 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/YearTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/YearTransformer.php
@@ -45,8 +45,8 @@ public function getReverseMatchingRegExp($length)
      */
     public function extractDateOptions($matched, $length)
     {
-        return array(
+        return [
             'year' => (int) $matched,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Intl/DateFormatter/IntlDateFormatter.php b/src/Symfony/Component/Intl/DateFormatter/IntlDateFormatter.php
index be97f93593f8..0f19310f22bf 100644
--- a/src/Symfony/Component/Intl/DateFormatter/IntlDateFormatter.php
+++ b/src/Symfony/Component/Intl/DateFormatter/IntlDateFormatter.php
@@ -76,23 +76,23 @@ class IntlDateFormatter
     /**
      * Patterns used to format the date when no pattern is provided.
      */
-    private $defaultDateFormats = array(
+    private $defaultDateFormats = [
         self::NONE => '',
         self::FULL => 'EEEE, LLLL d, y',
         self::LONG => 'LLLL d, y',
         self::MEDIUM => 'LLL d, y',
         self::SHORT => 'M/d/yy',
-    );
+    ];
 
     /**
      * Patterns used to format the time when no pattern is provided.
      */
-    private $defaultTimeFormats = array(
+    private $defaultTimeFormats = [
         self::FULL => 'h:mm:ss a zzzz',
         self::LONG => 'h:mm:ss a z',
         self::MEDIUM => 'h:mm:ss a',
         self::SHORT => 'h:mm a',
-    );
+    ];
 
     private $datetype;
     private $timetype;
@@ -600,7 +600,7 @@ protected function createDateTime($timestamp)
      */
     protected function getDefaultPattern()
     {
-        $patternParts = array();
+        $patternParts = [];
         if (self::NONE !== $this->datetype) {
             $patternParts[] = $this->defaultDateFormats[$this->datetype];
         }
diff --git a/src/Symfony/Component/Intl/Globals/IntlGlobals.php b/src/Symfony/Component/Intl/Globals/IntlGlobals.php
index 4e520695efa9..0dd25382f628 100644
--- a/src/Symfony/Component/Intl/Globals/IntlGlobals.php
+++ b/src/Symfony/Component/Intl/Globals/IntlGlobals.php
@@ -38,11 +38,11 @@ abstract class IntlGlobals
     /**
      * All known error codes.
      */
-    private static $errorCodes = array(
+    private static $errorCodes = [
         self::U_ZERO_ERROR => 'U_ZERO_ERROR',
         self::U_ILLEGAL_ARGUMENT_ERROR => 'U_ILLEGAL_ARGUMENT_ERROR',
         self::U_PARSE_ERROR => 'U_PARSE_ERROR',
-    );
+    ];
 
     /**
      * The error code of the last operation.
diff --git a/src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php b/src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php
index 0d7c3df0decf..a257e36947d0 100644
--- a/src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php
+++ b/src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php
@@ -151,40 +151,40 @@ class NumberFormatter
     /**
      * Default values for the en locale.
      */
-    private $attributes = array(
+    private $attributes = [
         self::FRACTION_DIGITS => 0,
         self::GROUPING_USED => 1,
         self::ROUNDING_MODE => self::ROUND_HALFEVEN,
-    );
+    ];
 
     /**
      * Holds the initialized attributes code.
      */
-    private $initializedAttributes = array();
+    private $initializedAttributes = [];
 
     /**
      * The supported styles to the constructor $styles argument.
      */
-    private static $supportedStyles = array(
+    private static $supportedStyles = [
         'CURRENCY' => self::CURRENCY,
         'DECIMAL' => self::DECIMAL,
-    );
+    ];
 
     /**
      * Supported attributes to the setAttribute() $attr argument.
      */
-    private static $supportedAttributes = array(
+    private static $supportedAttributes = [
         'FRACTION_DIGITS' => self::FRACTION_DIGITS,
         'GROUPING_USED' => self::GROUPING_USED,
         'ROUNDING_MODE' => self::ROUNDING_MODE,
-    );
+    ];
 
     /**
      * The available rounding modes for setAttribute() usage with
      * NumberFormatter::ROUNDING_MODE. NumberFormatter::ROUND_DOWN
      * and NumberFormatter::ROUND_UP does not have a PHP only equivalent.
      */
-    private static $roundingModes = array(
+    private static $roundingModes = [
         'ROUND_HALFEVEN' => self::ROUND_HALFEVEN,
         'ROUND_HALFDOWN' => self::ROUND_HALFDOWN,
         'ROUND_HALFUP' => self::ROUND_HALFUP,
@@ -192,7 +192,7 @@ class NumberFormatter
         'ROUND_FLOOR' => self::ROUND_FLOOR,
         'ROUND_DOWN' => self::ROUND_DOWN,
         'ROUND_UP' => self::ROUND_UP,
-    );
+    ];
 
     /**
      * The mapping between NumberFormatter rounding modes to the available
@@ -200,23 +200,23 @@ class NumberFormatter
      *
      * @see http://www.php.net/manual/en/function.round.php
      */
-    private static $phpRoundingMap = array(
+    private static $phpRoundingMap = [
         self::ROUND_HALFDOWN => \PHP_ROUND_HALF_DOWN,
         self::ROUND_HALFEVEN => \PHP_ROUND_HALF_EVEN,
         self::ROUND_HALFUP => \PHP_ROUND_HALF_UP,
-    );
+    ];
 
     /**
      * The list of supported rounding modes which aren't available modes in
      * PHP's round() function, but there's an equivalent. Keys are rounding
      * modes, values does not matter.
      */
-    private static $customRoundingList = array(
+    private static $customRoundingList = [
         self::ROUND_CEILING => true,
         self::ROUND_FLOOR => true,
         self::ROUND_DOWN => true,
         self::ROUND_UP => true,
-    );
+    ];
 
     /**
      * The maximum value of the integer type in 32 bit platforms.
@@ -230,15 +230,15 @@ class NumberFormatter
      */
     private static $int64Max = 9223372036854775807;
 
-    private static $enSymbols = array(
-        self::DECIMAL => array('.', ',', ';', '%', '0', '#', '-', '+', '¤', '¤¤', '.', 'E', '‰', '*', '∞', 'NaN', '@', ','),
-        self::CURRENCY => array('.', ',', ';', '%', '0', '#', '-', '+', '¤', '¤¤', '.', 'E', '‰', '*', '∞', 'NaN', '@', ','),
-    );
+    private static $enSymbols = [
+        self::DECIMAL => ['.', ',', ';', '%', '0', '#', '-', '+', '¤', '¤¤', '.', 'E', '‰', '*', '∞', 'NaN', '@', ','],
+        self::CURRENCY => ['.', ',', ';', '%', '0', '#', '-', '+', '¤', '¤¤', '.', 'E', '‰', '*', '∞', 'NaN', '@', ','],
+    ];
 
-    private static $enTextAttributes = array(
-        self::DECIMAL => array('', '', '-', '', ' ', 'XXX', ''),
-        self::CURRENCY => array('¤', '', '-¤', '', ' ', 'XXX'),
-    );
+    private static $enTextAttributes = [
+        self::DECIMAL => ['', '', '-', '', ' ', 'XXX', ''],
+        self::CURRENCY => ['¤', '', '-¤', '', ' ', 'XXX'],
+    ];
 
     /**
      * @param string $locale  The locale code. The only currently supported locale is "en" (or null using the default locale, i.e. "en")
diff --git a/src/Symfony/Component/Intl/ResourceBundle/CurrencyBundle.php b/src/Symfony/Component/Intl/ResourceBundle/CurrencyBundle.php
index b528b3b0a7fe..a7a3cc1bcc8d 100644
--- a/src/Symfony/Component/Intl/ResourceBundle/CurrencyBundle.php
+++ b/src/Symfony/Component/Intl/ResourceBundle/CurrencyBundle.php
@@ -73,7 +73,7 @@ public function getCurrencyNames($displayLocale = null)
         try {
             return $this->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 
@@ -109,7 +109,7 @@ public function getLocales()
         try {
             return $this->localeProvider->getLocales();
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 }
diff --git a/src/Symfony/Component/Intl/ResourceBundle/LanguageBundle.php b/src/Symfony/Component/Intl/ResourceBundle/LanguageBundle.php
index ee319544e541..c709f1f62516 100644
--- a/src/Symfony/Component/Intl/ResourceBundle/LanguageBundle.php
+++ b/src/Symfony/Component/Intl/ResourceBundle/LanguageBundle.php
@@ -74,7 +74,7 @@ public function getLanguageNames($displayLocale = null)
         try {
             return $this->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 
@@ -98,7 +98,7 @@ public function getScriptNames($displayLocale = null)
         try {
             return $this->scriptProvider->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 
@@ -110,7 +110,7 @@ public function getLocales()
         try {
             return $this->localeProvider->getLocales();
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 }
diff --git a/src/Symfony/Component/Intl/ResourceBundle/LocaleBundle.php b/src/Symfony/Component/Intl/ResourceBundle/LocaleBundle.php
index b14048a40ff9..078b1de2ddd8 100644
--- a/src/Symfony/Component/Intl/ResourceBundle/LocaleBundle.php
+++ b/src/Symfony/Component/Intl/ResourceBundle/LocaleBundle.php
@@ -31,7 +31,7 @@ public function getLocales()
         try {
             return parent::getLocales();
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 
@@ -55,7 +55,7 @@ public function getLocaleNames($displayLocale = null)
         try {
             return $this->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 }
diff --git a/src/Symfony/Component/Intl/ResourceBundle/RegionBundle.php b/src/Symfony/Component/Intl/ResourceBundle/RegionBundle.php
index d709ba55626f..1eccbb33980f 100644
--- a/src/Symfony/Component/Intl/ResourceBundle/RegionBundle.php
+++ b/src/Symfony/Component/Intl/ResourceBundle/RegionBundle.php
@@ -61,7 +61,7 @@ public function getCountryNames($displayLocale = null)
         try {
             return $this->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 
@@ -73,7 +73,7 @@ public function getLocales()
         try {
             return $this->localeProvider->getLocales();
         } catch (MissingResourceException $e) {
-            return array();
+            return [];
         }
     }
 }
diff --git a/src/Symfony/Component/Intl/Resources/bin/update-data.php b/src/Symfony/Component/Intl/Resources/bin/update-data.php
index 7238f4688016..d6e25af47456 100644
--- a/src/Symfony/Component/Intl/Resources/bin/update-data.php
+++ b/src/Symfony/Component/Intl/Resources/bin/update-data.php
@@ -178,8 +178,8 @@
 //$phpDir = $baseDir.'/'.Intl::PHP;
 //$resDir = $baseDir.'/'.Intl::RB_V2;
 
-$targetDirs = array($jsonDir/*, $resDir*/);
-$workingDirs = array($jsonDir/*, $txtDir, $resDir*/);
+$targetDirs = [$jsonDir/*, $resDir*/];
+$workingDirs = [$jsonDir/*, $txtDir, $resDir*/];
 
 //$config->addBundleWriter($txtDir, new TextBundleWriter());
 $config->addBundleWriter($jsonDir, new JsonBundleWriter());
@@ -189,13 +189,13 @@
 $filesystem->remove($workingDirs);
 
 foreach ($workingDirs as $targetDir) {
-    $filesystem->mkdir(array(
+    $filesystem->mkdir([
         $targetDir.'/'.Intl::CURRENCY_DIR,
         $targetDir.'/'.Intl::LANGUAGE_DIR,
         $targetDir.'/'.Intl::LOCALE_DIR,
         $targetDir.'/'.Intl::REGION_DIR,
         $targetDir.'/'.Intl::SCRIPT_DIR,
-    ));
+    ]);
 }
 
 // We don't want to use fallback to English during generation
diff --git a/src/Symfony/Component/Intl/Tests/Collator/AbstractCollatorTest.php b/src/Symfony/Component/Intl/Tests/Collator/AbstractCollatorTest.php
index 3465bb0c1d64..28eb37d7cc05 100644
--- a/src/Symfony/Component/Intl/Tests/Collator/AbstractCollatorTest.php
+++ b/src/Symfony/Component/Intl/Tests/Collator/AbstractCollatorTest.php
@@ -33,24 +33,24 @@ public function testAsort($array, $sortFlag, $expected)
 
     public function asortProvider()
     {
-        return array(
+        return [
             /* array, sortFlag, expected */
-            array(
-                array('a', 'b', 'c'),
+            [
+                ['a', 'b', 'c'],
                 Collator::SORT_REGULAR,
-                array('a', 'b', 'c'),
-            ),
-            array(
-                array('c', 'b', 'a'),
+                ['a', 'b', 'c'],
+            ],
+            [
+                ['c', 'b', 'a'],
                 Collator::SORT_REGULAR,
-                array(2 => 'a', 1 => 'b',  0 => 'c'),
-            ),
-            array(
-                array('b', 'c', 'a'),
+                [2 => 'a', 1 => 'b',  0 => 'c'],
+            ],
+            [
+                ['b', 'c', 'a'],
                 Collator::SORT_REGULAR,
-                array(2 => 'a', 0 => 'b', 1 => 'c'),
-            ),
-        );
+                [2 => 'a', 0 => 'b', 1 => 'c'],
+            ],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/BundleEntryReaderTest.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/BundleEntryReaderTest.php
index 7578b8b7876d..766611ed027d 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/BundleEntryReaderTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/BundleEntryReaderTest.php
@@ -32,34 +32,34 @@ class BundleEntryReaderTest extends TestCase
      */
     private $readerImpl;
 
-    private static $data = array(
-        'Entries' => array(
+    private static $data = [
+        'Entries' => [
             'Foo' => 'Bar',
             'Bar' => 'Baz',
-        ),
+        ],
         'Foo' => 'Bar',
         'Version' => '2.0',
-    );
+    ];
 
-    private static $fallbackData = array(
-        'Entries' => array(
+    private static $fallbackData = [
+        'Entries' => [
             'Foo' => 'Foo',
             'Bam' => 'Lah',
-        ),
+        ],
         'Baz' => 'Foo',
         'Version' => '1.0',
-    );
+    ];
 
-    private static $mergedData = array(
+    private static $mergedData = [
         // no recursive merging -> too complicated
-        'Entries' => array(
+        'Entries' => [
             'Foo' => 'Bar',
             'Bar' => 'Baz',
-        ),
+        ],
         'Baz' => 'Foo',
         'Version' => '2.0',
         'Foo' => 'Bar',
-    );
+    ];
 
     protected function setUp()
     {
@@ -89,7 +89,7 @@ public function testReadEntireDataFileIfNoIndicesGiven()
             ->with(self::RES_DIR, 'root')
             ->will($this->returnValue(self::$fallbackData));
 
-        $this->assertSame(self::$mergedData, $this->reader->readEntry(self::RES_DIR, 'en', array()));
+        $this->assertSame(self::$mergedData, $this->reader->readEntry(self::RES_DIR, 'en', []));
     }
 
     public function testReadExistingEntry()
@@ -99,7 +99,7 @@ public function testReadExistingEntry()
             ->with(self::RES_DIR, 'root')
             ->will($this->returnValue(self::$data));
 
-        $this->assertSame('Bar', $this->reader->readEntry(self::RES_DIR, 'root', array('Entries', 'Foo')));
+        $this->assertSame('Bar', $this->reader->readEntry(self::RES_DIR, 'root', ['Entries', 'Foo']));
     }
 
     /**
@@ -112,7 +112,7 @@ public function testReadNonExistingEntry()
             ->with(self::RES_DIR, 'root')
             ->will($this->returnValue(self::$data));
 
-        $this->reader->readEntry(self::RES_DIR, 'root', array('Entries', 'NonExisting'));
+        $this->reader->readEntry(self::RES_DIR, 'root', ['Entries', 'NonExisting']);
     }
 
     public function testFallbackIfEntryDoesNotExist()
@@ -127,7 +127,7 @@ public function testFallbackIfEntryDoesNotExist()
             ->with(self::RES_DIR, 'en')
             ->will($this->returnValue(self::$fallbackData));
 
-        $this->assertSame('Lah', $this->reader->readEntry(self::RES_DIR, 'en_GB', array('Entries', 'Bam')));
+        $this->assertSame('Lah', $this->reader->readEntry(self::RES_DIR, 'en_GB', ['Entries', 'Bam']));
     }
 
     /**
@@ -140,7 +140,7 @@ public function testDontFallbackIfEntryDoesNotExistAndFallbackDisabled()
             ->with(self::RES_DIR, 'en_GB')
             ->will($this->returnValue(self::$data));
 
-        $this->reader->readEntry(self::RES_DIR, 'en_GB', array('Entries', 'Bam'), false);
+        $this->reader->readEntry(self::RES_DIR, 'en_GB', ['Entries', 'Bam'], false);
     }
 
     public function testFallbackIfLocaleDoesNotExist()
@@ -155,7 +155,7 @@ public function testFallbackIfLocaleDoesNotExist()
             ->with(self::RES_DIR, 'en')
             ->will($this->returnValue(self::$fallbackData));
 
-        $this->assertSame('Lah', $this->reader->readEntry(self::RES_DIR, 'en_GB', array('Entries', 'Bam')));
+        $this->assertSame('Lah', $this->reader->readEntry(self::RES_DIR, 'en_GB', ['Entries', 'Bam']));
     }
 
     /**
@@ -168,20 +168,20 @@ public function testDontFallbackIfLocaleDoesNotExistAndFallbackDisabled()
             ->with(self::RES_DIR, 'en_GB')
             ->willThrowException(new ResourceBundleNotFoundException());
 
-        $this->reader->readEntry(self::RES_DIR, 'en_GB', array('Entries', 'Bam'), false);
+        $this->reader->readEntry(self::RES_DIR, 'en_GB', ['Entries', 'Bam'], false);
     }
 
     public function provideMergeableValues()
     {
-        return array(
-            array('foo', null, 'foo'),
-            array(null, 'foo', 'foo'),
-            array(array('foo', 'bar'), null, array('foo', 'bar')),
-            array(array('foo', 'bar'), array(), array('foo', 'bar')),
-            array(null, array('baz'), array('baz')),
-            array(array(), array('baz'), array('baz')),
-            array(array('foo', 'bar'), array('baz'), array('baz', 'foo', 'bar')),
-        );
+        return [
+            ['foo', null, 'foo'],
+            [null, 'foo', 'foo'],
+            [['foo', 'bar'], null, ['foo', 'bar']],
+            [['foo', 'bar'], [], ['foo', 'bar']],
+            [null, ['baz'], ['baz']],
+            [[], ['baz'], ['baz']],
+            [['foo', 'bar'], ['baz'], ['baz', 'foo', 'bar']],
+        ];
     }
 
     /**
@@ -206,7 +206,7 @@ public function testMergeDataWithFallbackData($childData, $parentData, $result)
                 ->will($this->returnValue($childData));
         }
 
-        $this->assertSame($result, $this->reader->readEntry(self::RES_DIR, 'en', array(), true));
+        $this->assertSame($result, $this->reader->readEntry(self::RES_DIR, 'en', [], true));
     }
 
     /**
@@ -219,7 +219,7 @@ public function testDontMergeDataIfFallbackDisabled($childData, $parentData, $re
             ->with(self::RES_DIR, 'en_GB')
             ->will($this->returnValue($childData));
 
-        $this->assertSame($childData, $this->reader->readEntry(self::RES_DIR, 'en_GB', array(), false));
+        $this->assertSame($childData, $this->reader->readEntry(self::RES_DIR, 'en_GB', [], false));
     }
 
     /**
@@ -231,20 +231,20 @@ public function testMergeExistingEntryWithExistingFallbackEntry($childData, $par
             $this->readerImpl->expects($this->at(0))
                 ->method('read')
                 ->with(self::RES_DIR, 'en')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $childData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $childData]]));
 
             $this->readerImpl->expects($this->at(1))
                 ->method('read')
                 ->with(self::RES_DIR, 'root')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $parentData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $parentData]]));
         } else {
             $this->readerImpl->expects($this->once())
                 ->method('read')
                 ->with(self::RES_DIR, 'en')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $childData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $childData]]));
         }
 
-        $this->assertSame($result, $this->reader->readEntry(self::RES_DIR, 'en', array('Foo', 'Bar'), true));
+        $this->assertSame($result, $this->reader->readEntry(self::RES_DIR, 'en', ['Foo', 'Bar'], true));
     }
 
     /**
@@ -255,14 +255,14 @@ public function testMergeNonExistingEntryWithExistingFallbackEntry($childData, $
         $this->readerImpl->expects($this->at(0))
             ->method('read')
             ->with(self::RES_DIR, 'en_GB')
-            ->will($this->returnValue(array('Foo' => 'Baz')));
+            ->will($this->returnValue(['Foo' => 'Baz']));
 
         $this->readerImpl->expects($this->at(1))
             ->method('read')
             ->with(self::RES_DIR, 'en')
-            ->will($this->returnValue(array('Foo' => array('Bar' => $parentData))));
+            ->will($this->returnValue(['Foo' => ['Bar' => $parentData]]));
 
-        $this->assertSame($parentData, $this->reader->readEntry(self::RES_DIR, 'en_GB', array('Foo', 'Bar'), true));
+        $this->assertSame($parentData, $this->reader->readEntry(self::RES_DIR, 'en_GB', ['Foo', 'Bar'], true));
     }
 
     /**
@@ -274,20 +274,20 @@ public function testMergeExistingEntryWithNonExistingFallbackEntry($childData, $
             $this->readerImpl->expects($this->at(0))
                 ->method('read')
                 ->with(self::RES_DIR, 'en_GB')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $childData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $childData]]));
 
             $this->readerImpl->expects($this->at(1))
                 ->method('read')
                 ->with(self::RES_DIR, 'en')
-                ->will($this->returnValue(array('Foo' => 'Bar')));
+                ->will($this->returnValue(['Foo' => 'Bar']));
         } else {
             $this->readerImpl->expects($this->once())
                 ->method('read')
                 ->with(self::RES_DIR, 'en_GB')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $childData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $childData]]));
         }
 
-        $this->assertSame($childData, $this->reader->readEntry(self::RES_DIR, 'en_GB', array('Foo', 'Bar'), true));
+        $this->assertSame($childData, $this->reader->readEntry(self::RES_DIR, 'en_GB', ['Foo', 'Bar'], true));
     }
 
     /**
@@ -298,14 +298,14 @@ public function testFailIfEntryFoundNeitherInParentNorChild()
         $this->readerImpl->expects($this->at(0))
             ->method('read')
             ->with(self::RES_DIR, 'en_GB')
-            ->will($this->returnValue(array('Foo' => 'Baz')));
+            ->will($this->returnValue(['Foo' => 'Baz']));
 
         $this->readerImpl->expects($this->at(1))
             ->method('read')
             ->with(self::RES_DIR, 'en')
-            ->will($this->returnValue(array('Foo' => 'Bar')));
+            ->will($this->returnValue(['Foo' => 'Bar']));
 
-        $this->reader->readEntry(self::RES_DIR, 'en_GB', array('Foo', 'Bar'), true);
+        $this->reader->readEntry(self::RES_DIR, 'en_GB', ['Foo', 'Bar'], true);
     }
 
     /**
@@ -320,20 +320,20 @@ public function testMergeTraversables($childData, $parentData, $result)
             $this->readerImpl->expects($this->at(0))
                 ->method('read')
                 ->with(self::RES_DIR, 'en_GB')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $childData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $childData]]));
 
             $this->readerImpl->expects($this->at(1))
                 ->method('read')
                 ->with(self::RES_DIR, 'en')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $parentData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $parentData]]));
         } else {
             $this->readerImpl->expects($this->once())
                 ->method('read')
                 ->with(self::RES_DIR, 'en_GB')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $childData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $childData]]));
         }
 
-        $this->assertSame($result, $this->reader->readEntry(self::RES_DIR, 'en_GB', array('Foo', 'Bar'), true));
+        $this->assertSame($result, $this->reader->readEntry(self::RES_DIR, 'en_GB', ['Foo', 'Bar'], true));
     }
 
     /**
@@ -341,26 +341,26 @@ public function testMergeTraversables($childData, $parentData, $result)
      */
     public function testFollowLocaleAliases($childData, $parentData, $result)
     {
-        $this->reader->setLocaleAliases(array('mo' => 'ro_MD'));
+        $this->reader->setLocaleAliases(['mo' => 'ro_MD']);
 
         if (null === $childData || \is_array($childData)) {
             $this->readerImpl->expects($this->at(0))
                 ->method('read')
                 ->with(self::RES_DIR, 'ro_MD')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $childData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $childData]]));
 
             // Read fallback locale of aliased locale ("ro_MD" -> "ro")
             $this->readerImpl->expects($this->at(1))
                 ->method('read')
                 ->with(self::RES_DIR, 'ro')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $parentData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $parentData]]));
         } else {
             $this->readerImpl->expects($this->once())
                 ->method('read')
                 ->with(self::RES_DIR, 'ro_MD')
-                ->will($this->returnValue(array('Foo' => array('Bar' => $childData))));
+                ->will($this->returnValue(['Foo' => ['Bar' => $childData]]));
         }
 
-        $this->assertSame($result, $this->reader->readEntry(self::RES_DIR, 'mo', array('Foo', 'Bar'), true));
+        $this->assertSame($result, $this->reader->readEntry(self::RES_DIR, 'mo', ['Foo', 'Bar'], true));
     }
 }
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/en.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/en.php
index f2b06a91ad32..e00056aee878 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/en.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/en.php
@@ -9,6 +9,6 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     'Foo' => 'Bar',
-);
+];
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/invalid_directory/en.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/invalid_directory/en.php
index f2b06a91ad32..e00056aee878 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/invalid_directory/en.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/invalid_directory/en.php
@@ -9,6 +9,6 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     'Foo' => 'Bar',
-);
+];
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/php/en.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/php/en.php
index f2b06a91ad32..e00056aee878 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/php/en.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Reader/Fixtures/php/en.php
@@ -9,6 +9,6 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     'Foo' => 'Bar',
-);
+];
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/Fixtures/en.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/Fixtures/en.php
index b694a0780134..4038f5bcaeb6 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/Fixtures/en.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/Fixtures/en.php
@@ -1,17 +1,17 @@
 <?php
 
-return array(
-    'Entry1' => array(
-        'Array' => array(
+return [
+    'Entry1' => [
+        'Array' => [
             0 => 'foo',
             1 => 'bar',
-        ),
+        ],
         'Integer' => 5,
         'Boolean' => false,
         'Float' => 1.23,
-    ),
+    ],
     'Entry2' => 'String',
-    'Traversable' => array(
+    'Traversable' => [
         'Foo' => 'Bar',
-    ),
-);
+    ],
+];
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/Fixtures/rb.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/Fixtures/rb.php
index 24e6465e2080..03e0fc2d6084 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/Fixtures/rb.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/Fixtures/rb.php
@@ -1,7 +1,7 @@
 <?php
 
-return array(
-    'Entry' => array(
+return [
+    'Entry' => [
         'NestedEntry' => 'Value',
-    ),
-);
+    ],
+];
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/JsonBundleWriterTest.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/JsonBundleWriterTest.php
index d13279c0d649..f56bc84385d8 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/JsonBundleWriterTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/JsonBundleWriterTest.php
@@ -48,18 +48,18 @@ protected function tearDown()
 
     public function testWrite()
     {
-        $this->writer->write($this->directory, 'en', array(
-            'Entry1' => array(
-                'Array' => array('foo', 'bar'),
+        $this->writer->write($this->directory, 'en', [
+            'Entry1' => [
+                'Array' => ['foo', 'bar'],
                 'Integer' => 5,
                 'Boolean' => false,
                 'Float' => 1.23,
-            ),
+            ],
             'Entry2' => 'String',
-            'Traversable' => new \ArrayIterator(array(
+            'Traversable' => new \ArrayIterator([
                 'Foo' => 'Bar',
-            )),
-        ));
+            ]),
+        ]);
 
         $this->assertFileEquals(__DIR__.'/Fixtures/en.json', $this->directory.'/en.json');
     }
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/PhpBundleWriterTest.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/PhpBundleWriterTest.php
index e1b8f6741382..8010f9574a02 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/PhpBundleWriterTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/PhpBundleWriterTest.php
@@ -48,18 +48,18 @@ protected function tearDown()
 
     public function testWrite()
     {
-
10000
        $this->writer->write($this->directory, 'en', array(
-            'Entry1' => array(
-                'Array' => array('foo', 'bar'),
+        $this->writer->write($this->directory, 'en', [
+            'Entry1' => [
+                'Array' => ['foo', 'bar'],
                 'Integer' => 5,
                 'Boolean' => false,
                 'Float' => 1.23,
-            ),
+            ],
             'Entry2' => 'String',
-            'Traversable' => new \ArrayIterator(array(
+            'Traversable' => new \ArrayIterator([
                 'Foo' => 'Bar',
-            )),
-        ));
+            ]),
+        ]);
 
         $this->assertFileEquals(__DIR__.'/Fixtures/en.php', $this->directory.'/en.php');
     }
diff --git a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/TextBundleWriterTest.php b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/TextBundleWriterTest.php
index 4908f2837026..2c0e70e019ac 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/TextBundleWriterTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Bundle/Writer/TextBundleWriterTest.php
@@ -50,51 +50,51 @@ protected function tearDown()
 
     public function testWrite()
     {
-        $this->writer->write($this->directory, 'en', array(
-            'Entry1' => array(
-                'Array' => array('foo', 'bar', array('Key' => 'value')),
+        $this->writer->write($this->directory, 'en', [
+            'Entry1' => [
+                'Array' => ['foo', 'bar', ['Key' => 'value']],
                 'Integer' => 5,
-                'IntVector' => array(0, 1, 2, 3),
-                'NotAnIntVector' => array(0 => 0, 2 => 1, 1 => 2, 3 => 3),
-                'IntVectorWithStringKeys' => array('a' => 0, 'b' => 1, 'c' => 2),
-                'TableWithIntKeys' => array(0 => 0, 1 => 1, 3 => 3),
+                'IntVector' => [0, 1, 2, 3],
+                'NotAnIntVector' => [0 => 0, 2 => 1, 1 => 2, 3 => 3],
+                'IntVectorWithStringKeys' => ['a' => 0, 'b' => 1, 'c' => 2],
+                'TableWithIntKeys' => [0 => 0, 1 => 1, 3 => 3],
                 'FalseBoolean' => false,
                 'TrueBoolean' => true,
                 'Null' => null,
                 'Float' => 1.23,
-            ),
+            ],
             'Entry2' => 'String',
-        ));
+        ]);
 
         $this->assertFileEquals(__DIR__.'/Fixtures/en.txt', $this->directory.'/en.txt');
     }
 
     public function testWriteTraversable()
     {
-        $this->writer->write($this->directory, 'en', new \ArrayIterator(array(
-            'Entry1' => new \ArrayIterator(array(
-                'Array' => array('foo', 'bar', array('Key' => 'value')),
+        $this->writer->write($this->directory, 'en', new \ArrayIterator([
+            'Entry1' => new \ArrayIterator([
+                'Array' => ['foo', 'bar', ['Key' => 'value']],
                 'Integer' => 5,
-                'IntVector' => array(0, 1, 2, 3),
-                'NotAnIntVector' => array(0 => 0, 2 => 1, 1 => 2, 3 => 3),
-                'IntVectorWithStringKeys' => array('a' => 0, 'b' => 1, 'c' => 2),
-                'TableWithIntKeys' => array(0 => 0, 1 => 1, 3 => 3),
+                'IntVector' => [0, 1, 2, 3],
+                'NotAnIntVector' => [0 => 0, 2 => 1, 1 => 2, 3 => 3],
+                'IntVectorWithStringKeys' => ['a' => 0, 'b' => 1, 'c' => 2],
+                'TableWithIntKeys' => [0 => 0, 1 => 1, 3 => 3],
                 'FalseBoolean' => false,
                 'TrueBoolean' => true,
                 'Null' => null,
                 'Float' => 1.23,
-            )),
+            ]),
             'Entry2' => 'String',
-        )));
+        ]));
 
         $this->assertFileEquals(__DIR__.'/Fixtures/en.txt', $this->directory.'/en.txt');
     }
 
     public function testWriteNoFallback()
     {
-        $data = array(
+        $data = [
             'Entry' => 'Value',
-        );
+        ];
 
         $this->writer->write($this->directory, 'en_nofallback', $data, $fallback = false);
 
@@ -103,13 +103,13 @@ public function testWriteNoFallback()
 
     public function testEscapeKeysIfNecessary()
     {
-        $this->writer->write($this->directory, 'escaped', array(
+        $this->writer->write($this->directory, 'escaped', [
             // Keys with colons must be escaped, otherwise the part after the
             // colon is interpreted as resource type
             'EntryWith:Colon' => 'Value',
             // Keys with spaces must be escaped
             'Entry With Spaces' => 'Value',
-        ));
+        ]);
 
         $this->assertFileEquals(__DIR__.'/Fixtures/escaped.txt', $this->directory.'/escaped.txt');
     }
diff --git a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractCurrencyDataProviderTest.php b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractCurrencyDataProviderTest.php
index bf23caee8651..70afbb666df5 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractCurrencyDataProviderTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractCurrencyDataProviderTest.php
@@ -22,7 +22,7 @@ abstract class AbstractCurrencyDataProviderTest extends AbstractDataProviderTest
 {
     // The below arrays document the state of the ICU data bundled with this package.
 
-    protected static $currencies = array(
+    protected static $currencies = [
         'ADP',
         'AED',
         'AFA',
@@ -313,9 +313,9 @@ abstract class AbstractCurrencyDataProviderTest extends AbstractDataProviderTest
         'ZWD',
         'ZWL',
         'ZWR',
-    );
+    ];
 
-    protected static $alpha3ToNumeric = array(
+    protected static $alpha3ToNumeric = [
         'AFA' => 4,
         'ALK' => 8,
         'ALL' => 8,
@@ -584,7 +584,7 @@ abstract class AbstractCurrencyDataProviderTest extends AbstractDataProviderTest
         'ESA' => 996,
         'USN' => 997,
         'USS' => 998,
-    );
+    ];
 
     /**
      * @var CurrencyDataProvider
@@ -659,7 +659,7 @@ public function testGetNamesSupportsAliases($alias, $ofLocale)
     public function testGetName($displayLocale)
     {
         $expected = $this->dataProvider->getNames($displayLocale);
-        $actual = array();
+        $actual = [];
 
         foreach ($expected as $currency => $name) {
             $actual[$currency] = $this->dataProvider->getName($currency, $displayLocale);
@@ -673,7 +673,7 @@ public function testGetNameDefaultLocale()
         Locale::setDefault('de_AT');
 
         $expected = $this->dataProvider->getNames('de_AT');
-        $actual = array();
+        $actual = [];
 
         foreach ($expected as $currency => $name) {
             $actual[$currency] = $this->dataProvider->getName($currency);
@@ -697,7 +697,7 @@ public function testGetSymbol($displayLocale)
     public function provideCurrencies()
     {
         return array_map(
-            function ($currency) { return array($currency); },
+            function ($currency) { return [$currency]; },
             static::$currencies
         );
     }
@@ -721,7 +721,7 @@ public function testGetRoundingIncrement($currency)
     public function provideCurrenciesWithNumericEquivalent()
     {
         return array_map(
-            function ($value) { return array($value); },
+            function ($value) { return [$value]; },
             array_keys(static::$alpha3ToNumeric)
         );
     }
@@ -737,7 +737,7 @@ public function testGetNumericCode($currency)
     public function provideCurrenciesWithoutNumericEquivalent()
     {
         return array_map(
-            function ($value) { return array($value); },
+            function ($value) { return [$value]; },
             array_diff(static::$currencies, array_keys(static::$alpha3ToNumeric))
         );
     }
@@ -756,7 +756,7 @@ public function provideValidNumericCodes()
         $numericToAlpha3 = $this->getNumericToAlpha3Mapping();
 
         return array_map(
-            function ($numeric, $alpha3) { return array($numeric, $alpha3); },
+            function ($numeric, $alpha3) { return [$numeric, $alpha3]; },
             array_keys($numericToAlpha3),
             $numericToAlpha3
         );
@@ -782,7 +782,7 @@ public function provideInvalidNumericCodes()
         $invalidNumericCodes = array_diff(range(0, 1000), $validNumericCodes);
 
         return array_map(
-            function ($value) { return array($value); },
+            function ($value) { return [$value]; },
             $invalidNumericCodes
         );
     }
@@ -798,11 +798,11 @@ public function testForNumericCodeFailsIfInvalidNumericCode($currency)
 
     private function getNumericToAlpha3Mapping()
     {
-        $numericToAlpha3 = array();
+        $numericToAlpha3 = [];
 
         foreach (static::$alpha3ToNumeric as $alpha3 => $numeric) {
             if (!isset($numericToAlpha3[$numeric])) {
-                $numericToAlpha3[$numeric] = array();
+                $numericToAlpha3[$numeric] = [];
             }
 
             $numericToAlpha3[$numeric][] = $alpha3;
diff --git a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractDataProviderTest.php b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractDataProviderTest.php
index 19246a0602e2..22025becebd8 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractDataProviderTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractDataProviderTest.php
@@ -26,7 +26,7 @@ abstract class AbstractDataProviderTest extends TestCase
     // not loaded, because it is NOT possible to skip the execution of data
     // providers.
 
-    private static $locales = array(
+    private static $locales = [
         'af',
         'af_NA',
         'af_ZA',
@@ -633,9 +633,9 @@ abstract class AbstractDataProviderTest extends TestCase
         'zh_TW',
         'zu',
         'zu_ZA',
-    );
+    ];
 
-    private static $localeAliases = array(
+    private static $localeAliases = [
         'az_AZ' => 'az_Latn_AZ',
         'bs_BA' => 'bs_Latn_BA',
         'en_NH' => 'en_VU',
@@ -673,7 +673,7 @@ abstract class AbstractDataProviderTest extends TestCase
         'zh_MO' => 'zh_Hant_MO',
         'zh_SG' => 'zh_Hans_SG',
         'zh_TW' => 'zh_Hant_TW',
-    );
+    ];
 
     private static $rootLocales;
 
@@ -686,7 +686,7 @@ protected function setUp()
     public function provideLocales()
     {
         return array_map(
-            function ($locale) { return array($locale); },
+            function ($locale) { return [$locale]; },
             $this->getLocales()
         );
     }
@@ -694,7 +694,7 @@ function ($locale) { return array($locale); },
     public function provideLocaleAliases()
     {
         return array_map(
-            function ($alias, $ofLocale) { return array($alias, $ofLocale); },
+            function ($alias, $ofLocale) { return [$alias, $ofLocale]; },
             array_keys($this->getLocaleAliases()),
             $this->getLocaleAliases()
         );
@@ -703,7 +703,7 @@ function ($alias, $ofLocale) { return array($alias, $ofLocale); },
     public function provideRootLocales()
     {
         return array_map(
-            function ($locale) { return array($locale); },
+            function ($locale) { return [$locale]; },
             $this->getRootLocales()
         );
     }
diff --git a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractLanguageDataProviderTest.php b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractLanguageDataProviderTest.php
index f328ebb484e1..003e688d03d8 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractLanguageDataProviderTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractLanguageDataProviderTest.php
@@ -22,7 +22,7 @@ abstract class AbstractLanguageDataProviderTest extends AbstractDataProviderTest
 {
     // The below arrays document the state of the ICU data bundled with this package.
 
-    protected static $languages = array(
+    protected static $languages = [
         'aa',
         'ab',
         'ace',
@@ -643,9 +643,9 @@ abstract class AbstractLanguageDataProviderTest extends AbstractDataProviderTest
         'zun',
         'zxx',
         'zza',
-    );
+    ];
 
-    protected static $alpha2ToAlpha3 = array(
+    protected static $alpha2ToAlpha3 = [
         'aa' => 'aar',
         'ab' => 'abk',
         'af' => 'afr',
@@ -826,7 +826,7 @@ abstract class AbstractLanguageDataProviderTest extends AbstractDataProviderTest
         'yo' => 'yor',
         'za' => 'zha',
         'zu' => 'zul',
-    );
+    ];
 
     /**
      * @var LanguageDataProvider
@@ -913,7 +913,7 @@ public function testGetNameDefaultLocale()
     public function provideLanguagesWithAlpha3Equivalent()
     {
         return array_map(
-            function ($value) { return array($value); },
+            function ($value) { return [$value]; },
             array_keys(static::$alpha2ToAlpha3)
         );
     }
@@ -929,7 +929,7 @@ public function testGetAlpha3Code($language)
     public function provideLanguagesWithoutAlpha3Equivalent()
     {
         return array_map(
-            function ($value) { return array($value); },
+            function ($value) { return [$value]; },
             array_diff(static::$languages, array_keys(static::$alpha2ToAlpha3))
         );
     }
diff --git a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractRegionDataProviderTest.php b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractRegionDataProviderTest.php
index c91c96f1e4df..1f5febb2b86b 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractRegionDataProviderTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractRegionDataProviderTest.php
@@ -22,7 +22,7 @@ abstract class AbstractRegionDataProviderTest extends AbstractDataProviderTest
 {
     // The below arrays document the state of the ICU data bundled with this package.
 
-    protected static $territories = array(
+    protected static $territories = [
         'AC',
         'AD',
         'AE',
@@ -278,7 +278,7 @@ abstract class AbstractRegionDataProviderTest extends AbstractDataProviderTest
         'ZA',
         'ZM',
         'ZW',
-    );
+    ];
 
     /**
      * @var RegionDataProvider
diff --git a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractScriptDataProviderTest.php b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractScriptDataProviderTest.php
index c827f6232687..0626159cba70 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractScriptDataProviderTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Provider/AbstractScriptDataProviderTest.php
@@ -23,7 +23,7 @@ abstract class AbstractScriptDataProviderTest extends AbstractDataProviderTest
 {
     // The below arrays document the state of the ICU data bundled with this package.
 
-    protected static $scripts = array(
+    protected static $scripts = [
         'Adlm',
         'Afak',
         'Aghb',
@@ -209,7 +209,7 @@ abstract class AbstractScriptDataProviderTest extends AbstractDataProviderTest
         'Zxxx',
         'Zyyy',
         'Zzzz',
-    );
+    ];
 
     /**
      * @var ScriptDataProvider
diff --git a/src/Symfony/Component/Intl/Tests/Data/Util/LocaleScannerTest.php b/src/Symfony/Component/Intl/Tests/Data/Util/LocaleScannerTest.php
index f76c71d8f7a4..23f312b7bf16 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Util/LocaleScannerTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Util/LocaleScannerTest.php
@@ -63,14 +63,14 @@ protected function tearDown()
 
     public function testScanLocales()
     {
-        $sortedLocales = array('de', 'de_alias', 'en', 'en_alias', 'fr', 'fr_alias');
+        $sortedLocales = ['de', 'de_alias', 'en', 'en_alias', 'fr', 'fr_alias'];
 
         $this->assertSame($sortedLocales, $this->scanner->scanLocales($this->directory));
     }
 
     public function testScanAliases()
     {
-        $sortedAliases = array('de_alias' => 'de', 'en_alias' => 'en', 'fr_alias' => 'fr');
+        $sortedAliases = ['de_alias' => 'de', 'en_alias' => 'en', 'fr_alias' => 'fr'];
 
         $this->assertSame($sortedAliases, $this->scanner->scanAliases($this->directory));
     }
diff --git a/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php b/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
index 1359cc422237..a1ade6a42b55 100644
--- a/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
+++ b/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
@@ -77,185 +77,185 @@ public function formatProvider()
     {
         $dateTime = new \DateTime('@0');
 
-        $formatData = array(
+        $formatData = [
             /* general */
-            array('y-M-d', 0, '1970-1-1'),
-            array("EEE, MMM d, ''yy", 0, "Thu, Jan 1, '70"),
-            array('h:mm a', 0, '12:00 AM'),
-            array('yyyyy.MMMM.dd hh:mm aaa', 0, '01970.January.01 12:00 AM'),
+            ['y-M-d', 0, '1970-1-1'],
+            ["EEE, MMM d, ''yy", 0, "Thu, Jan 1, '70"],
+            ['h:mm a', 0, '12:00 AM'],
+            ['yyyyy.MMMM.dd hh:mm aaa', 0, '01970.January.01 12:00 AM'],
 
             /* escaping */
-            array("'M'", 0, 'M'),
-            array("'yy'", 0, 'yy'),
-            array("'''yy'", 0, "'yy"),
-            array("''y", 0, "'1970"),
-            array("''yy", 0, "'70"),
-            array("H 'o'' clock'", 0, "0 o' clock"),
+            ["'M'", 0, 'M'],
+            ["'yy'", 0, 'yy'],
+            ["'''yy'", 0, "'yy"],
+            ["''y", 0, "'1970"],
+            ["''yy", 0, "'70"],
+            ["H 'o'' clock'", 0, "0 o' clock"],
 
             /* month */
-            array('M', 0, '1'),
-            array('MM', 0, '01'),
-            array('MMM', 0, 'Jan'),
-            array('MMMM', 0, 'January'),
-            array('MMMMM', 0, 'J'),
-            array('MMMMMM', 0, '000001'),
-
-            array('L', 0, '1'),
-            array('LL', 0, '01'),
-            array('LLL', 0, 'Jan'),
-            array('LLLL', 0, 'January'),
-            array('LLLLL', 0, 'J'),
-            array('LLLLLL', 0, '000001'),
+            ['M', 0, '1'],
+            ['MM', 0, '01'],
+            ['MMM', 0, 'Jan'],
+            ['MMMM', 0, 'January'],
+            ['MMMMM', 0, 'J'],
+            ['MMMMMM', 0, '000001'],
+
+            ['L', 0, '1'],
+            ['LL', 0, '01'],
+            ['LLL', 0, 'Jan'],
+            ['LLLL', 0, 'January'],
+            ['LLLLL', 0, 'J'],
+            ['LLLLLL', 0, '000001'],
 
             /* year */
-            array('y', 0, '1970'),
-            array('yy', 0, '70'),
-            array('yyy', 0, '1970'),
-            array('yyyy', 0, '1970'),
-            array('yyyyy', 0, '01970'),
-            array('yyyyyy', 0, '001970'),
+            ['y', 0, '1970'],
+            ['yy', 0, '70'],
+            ['yyy', 0, '1970'],
+            ['yyyy', 0, '1970'],
+            ['yyyyy', 0, '01970'],
+            ['yyyyyy', 0, '001970'],
 
             /* day */
-            array('d', 0, '1'),
-            array('dd', 0, '01'),
-            array('ddd', 0, '001'),
+            ['d', 0, '1'],
+            ['dd', 0, '01'],
+            ['ddd', 0, '001'],
 
             /* quarter */
-            array('Q', 0, '1'),
-            array('QQ', 0, '01'),
-            array('QQQ', 0, 'Q1'),
-            array('QQQQ', 0, '1st quarter'),
-            array('QQQQQ', 0, '1st quarter'),
-
-            array('q', 0, '1'),
-            array('qq', 0, '01'),
-            array('qqq', 0, 'Q1'),
-            array('qqqq', 0, '1st quarter'),
-            array('qqqqq', 0, '1st quarter'),
+            ['Q', 0, '1'],
+            ['QQ', 0, '01'],
+            ['QQQ', 0, 'Q1'],
+            ['QQQQ', 0, '1st quarter'],
+            ['QQQQQ', 0, '1st quarter'],
+
+            ['q', 0, '1'],
+            ['qq', 0, '01'],
+            ['qqq', 0, 'Q1'],
+            ['qqqq', 0, '1st quarter'],
+            ['qqqqq', 0, '1st quarter'],
 
             // 4 months
-            array('Q', 7776000, '2'),
-            array('QQ', 7776000, '02'),
-            array('QQQ', 7776000, 'Q2'),
-            array('QQQQ', 7776000, '2nd quarter'),
+            ['Q', 7776000, '2'],
+            ['QQ', 7776000, '02'],
+            ['QQQ', 7776000, 'Q2'],
+            ['QQQQ', 7776000, '2nd quarter'],
 
             // 7 months
-            array('QQQQ', 15638400, '3rd quarter'),
+            ['QQQQ', 15638400, '3rd quarter'],
 
             // 10 months
-            array('QQQQ', 23587200, '4th quarter'),
+            ['QQQQ', 23587200, '4th quarter'],
 
             /* 12-hour (1-12) */
-            array('h', 0, '12'),
-            array('hh', 0, '12'),
-            array('hhh', 0, '012'),
+            ['h', 0, '12'],
+            ['hh', 0, '12'],
+            ['hhh', 0, '012'],
 
-            array('h', 1, '12'),
-            array('h', 3600, '1'),
-            array('h', 43200, '12'), // 12 hours
+            ['h', 1, '12'],
+            ['h', 3600, '1'],
+            ['h', 43200, '12'], // 12 hours
 
             /* day of year */
-            array('D', 0, '1'),
-            array('D', 86400, '2'), // 1 day
-            array('D', 31536000, '1'), // 1 year
-            array('D', 31622400, '2'), // 1 year + 1 day
+            ['D', 0, '1'],
+            ['D', 86400, '2'], // 1 day
+            ['D', 31536000, '1'], // 1 year
+            ['D', 31622400, '2'], // 1 year + 1 day
 
             /* day of week */
-            array('E', 0, 'Thu'),
-            array('EE', 0, 'Thu'),
-            array('EEE', 0, 'Thu'),
-            array('EEEE', 0, 'Thursday'),
-            array('EEEEE', 0, 'T'),
-            array('EEEEEE', 0, 'Th'),
+            ['E', 0, 'Thu'],
+            ['EE', 0, 'Thu'],
+            ['EEE', 0, 'Thu'],
+            ['EEEE', 0, 'Thursday'],
+            ['EEEEE', 0, 'T'],
+            ['EEEEEE', 0, 'Th'],
 
-            array('E', 1296540000, 'Tue'), // 2011-02-01
-            array('E', 1296950400, 'Sun'), // 2011-02-06
+            ['E', 1296540000, 'Tue'], // 2011-02-01
+            ['E', 1296950400, 'Sun'], // 2011-02-06
 
             /* am/pm marker */
-            array('a', 0, 'AM'),
-            array('aa', 0, 'AM'),
-            array('aaa', 0, 'AM'),
-            array('aaaa', 0, 'AM'),
+            ['a', 0, 'AM'],
+            ['aa', 0, 'AM'],
+            ['aaa', 0, 'AM'],
+            ['aaaa', 0, 'AM'],
 
             // 12 hours
-            array('a', 43200, 'PM'),
-            array('aa', 43200, 'PM'),
-            array('aaa', 43200, 'PM'),
-            array('aaaa', 43200, 'PM'),
+            ['a', 43200, 'PM'],
+            ['aa', 43200, 'PM'],
+            ['aaa', 43200, 'PM'],
+            ['aaaa', 43200, 'PM'],
 
             /* 24-hour (0-23) */
-            array('H', 0, '0'),
-            array('HH', 0, '00'),
-            array('HHH', 0, '000'),
+            ['H', 0, '0'],
+            ['HH', 0, '00'],
+            ['HHH', 0, '000'],
 
-            array('H', 1, '0'),
-            array('H', 3600, '1'),
-            array('H', 43200, '12'),
-            array('H', 46800, '13'),
+            ['H', 1, '0'],
+            ['H', 3600, '1'],
+            ['H', 43200, '12'],
+            ['H', 46800, '13'],
 
             /* 24-hour (1-24) */
-            array('k', 0, '24'),
-            array('kk', 0, '24'),
-            array('kkk', 0, '024'),
+            ['k', 0, '24'],
+            ['kk', 0, '24'],
+            ['kkk', 0, '024'],
 
-            array('k', 1, '24'),
-            array('k', 3600, '1'),
-            array('k', 43200, '12'),
-            array('k', 46800, '13'),
+            ['k', 1, '24'],
+            ['k', 3600, '1'],
+            ['k', 43200, '12'],
+            ['k', 46800, '13'],
 
             /* 12-hour (0-11) */
-            array('K', 0, '0'),
-            array('KK', 0, '00'),
-            array('KKK', 0, '000'),
+            ['K', 0, '0'],
+            ['KK', 0, '00'],
+            ['KKK', 0, '000'],
 
-            array('K', 1, '0'),
-            array('K', 3600, '1'),
-            array('K', 43200, '0'), // 12 hours
+            ['K', 1, '0'],
+            ['K', 3600, '1'],
+            ['K', 43200, '0'], // 12 hours
 
             /* minute */
-            array('m', 0, '0'),
-            array('mm', 0, '00'),
-            array('mmm', 0, '000'),
-
-            array('m', 1, '0'),
-            array('m', 60, '1'),
-            array('m', 120, '2'),
-            array('m', 180, '3'),
-            array('m', 3600, '0'),
-            array('m', 3660, '1'),
-            array('m', 43200, '0'), // 12 hours
+            ['m', 0, '0'],
+            ['mm', 0, '00'],
+            ['mmm', 0, '000'],
+
+            ['m', 1, '0'],
+            ['m', 60, '1'],
+            ['m', 120, '2'],
+            ['m', 180, '3'],
+            ['m', 3600, '0'],
+            ['m', 3660, '1'],
+            ['m', 43200, '0'], // 12 hours
 
             /* second */
-            array('s', 0, '0'),
-            array('ss', 0, '00'),
-            array('sss', 0, '000'),
-
-            array('s', 1, '1'),
-            array('s', 2, '2'),
-            array('s', 5, '5'),
-            array('s', 30, '30'),
-            array('s', 59, '59'),
-            array('s', 60, '0'),
-            array('s', 120, '0'),
-            array('s', 180, '0'),
-            array('s', 3600, '0'),
-            array('s', 3601, '1'),
-            array('s', 3630, '30'),
-            array('s', 43200, '0'), // 12 hours
-        );
+            ['s', 0, '0'],
+            ['ss', 0, '00'],
+            ['sss', 0, '000'],
+
+            ['s', 1, '1'],
+            ['s', 2, '2'],
+            ['s', 5, '5'],
+            ['s', 30, '30'],
+            ['s', 59, '59'],
+            ['s', 60, '0'],
+            ['s', 120, '0'],
+            ['s', 180, '0'],
+            ['s', 3600, '0'],
+            ['s', 3601, '1'],
+            ['s', 3630, '30'],
+            ['s', 43200, '0'], // 12 hours
+        ];
 
         /* general, DateTime */
-        $formatData[] = array('y-M-d', $dateTime, '1970-1-1');
-        $formatData[] = array("EEE, MMM d, ''yy", $dateTime, "Thu, Jan 1, '70");
-        $formatData[] = array('h:mm a', $dateTime, '12:00 AM');
-        $formatData[] = array('yyyyy.MMMM.dd hh:mm aaa', $dateTime, '01970.January.01 12:00 AM');
+        $formatData[] = ['y-M-d', $dateTime, '1970-1-1'];
+        $formatData[] = ["EEE, MMM d, ''yy", $dateTime, "Thu, Jan 1, '70"];
+        $formatData[] = ['h:mm a', $dateTime, '12:00 AM'];
+        $formatData[] = ['yyyyy.MMMM.dd hh:mm aaa', $dateTime, '01970.January.01 12:00 AM'];
 
         if (IcuVersion::compare(Intl::getIcuVersion(), '59.1', '>=', 1)) {
             // Before ICU 59.1 GMT was used instead of UTC
-            $formatData[] = array("yyyy.MM.dd 'at' HH:mm:ss zzz", 0, '1970.01.01 at 00:00:00 UTC');
-            $formatData[] = array('K:mm a, z', 0, '0:00 AM, UTC');
-            $formatData[] = array("yyyy.MM.dd 'at' HH:mm:ss zzz", $dateTime, '1970.01.01 at 00:00:00 UTC');
-            $formatData[] = array('K:mm a, z', $dateTime, '0:00 AM, UTC');
+            $formatData[] = ["yyyy.MM.dd 'at' HH:mm:ss zzz", 0, '1970.01.01 at 00:00:00 UTC'];
+            $formatData[] = ['K:mm a, z', 0, '0:00 AM, UTC'];
+            $formatData[] = ["yyyy.MM.dd 'at' HH:mm:ss zzz", $dateTime, '1970.01.01 at 00:00:00 UTC'];
+            $formatData[] = ['K:mm a, z', $dateTime, '0:00 AM, UTC'];
         }
 
         return $formatData;
@@ -288,9 +288,9 @@ public function testFormatIllegalArgumentError($pattern, $timestamp, $errorMessa
 
     public function formatErrorProvider()
     {
-        return array(
-            array('y-M-d', 'foobar', 'datefmt_format: string \'foobar\' is not numeric, which would be required for it to be a valid date: U_ILLEGAL_ARGUMENT_ERROR'),
-        );
+        return [
+            ['y-M-d', 'foobar', 'datefmt_format: string \'foobar\' is not numeric, which would be required for it to be a valid date: U_ILLEGAL_ARGUMENT_ERROR'],
+        ];
     }
 
     /**
@@ -305,31 +305,31 @@ public function testFormatWithTimezone($timestamp, $timezone, $expected)
 
     public function formatWithTimezoneProvider()
     {
-        $data = array(
-            array(0, 'UTC', '1970-01-01 00:00:00'),
-            array(0, 'GMT', '1970-01-01 00:00:00'),
-            array(0, 'GMT-03:00', '1969-12-31 21:00:00'),
-            array(0, 'GMT+03:00', '1970-01-01 03:00:00'),
-            array(0, 'Europe/Zurich', '1970-01-01 01:00:00'),
-            array(0, 'Europe/Paris', '1970-01-01 01:00:00'),
-            array(0, 'Africa/Cairo', '1970-01-01 02:00:00'),
-            array(0, 'Africa/Casablanca', '1970-01-01 00:00:00'),
-            array(0, 'Africa/Djibouti', '1970-01-01 03:00:00'),
-            array(0, 'Africa/Johannesburg', '1970-01-01 02:00:00'),
-            array(0, 'America/Antigua', '1969-12-31 20:00:00'),
-            array(0, 'America/Toronto', '1969-12-31 19:00:00'),
-            array(0, 'America/Vancouver', '1969-12-31 16:00:00'),
-            array(0, 'Asia/Aqtau', '1970-01-01 05:00:00'),
-            array(0, 'Asia/Bangkok', '1970-01-01 07:00:00'),
-            array(0, 'Asia/Dubai', '1970-01-01 04:00:00'),
-            array(0, 'Australia/Brisbane', '1970-01-01 10:00:00'),
-            array(0, 'Australia/Eucla', '1970-01-01 08:45:00'),
-            array(0, 'Australia/Melbourne', '1970-01-01 10:00:00'),
-            array(0, 'Europe/Berlin', '1970-01-01 01:00:00'),
-            array(0, 'Europe/Dublin', '1970-01-01 01:00:00'),
-            array(0, 'Europe/Warsaw', '1970-01-01 01:00:00'),
-            array(0, 'Pacific/Fiji', '1970-01-01 12:00:00'),
-        );
+        $data = [
+            [0, 'UTC', '1970-01-01 00:00:00'],
+            [0, 'GMT', '1970-01-01 00:00:00'],
+            [0, 'GMT-03:00', '1969-12-31 21:00:00'],
+            [0, 'GMT+03:00', '1970-01-01 03:00:00'],
+            [0, 'Europe/Zurich', '1970-01-01 01:00:00'],
+            [0, 'Europe/Paris', '1970-01-01 01:00:00'],
+            [0, 'Africa/Cairo', '1970-01-01 02:00:00'],
+            [0, 'Africa/Casablanca', '1970-01-01 00:00:00'],
+            [0, 'Africa/Djibouti', '1970-01-01 03:00:00'],
+            [0, 'Africa/Johannesburg', '1970-01-01 02:00:00'],
+            [0, 'America/Antigua', '1969-12-31 20:00:00'],
+            [0, 'America/Toronto', '1969-12-31 19:00:00'],
+            [0, 'America/Vancouver', '1969-12-31 16:00:00'],
+            [0, 'Asia/Aqtau', '1970-01-01 05:00:00'],
+            [0, 'Asia/Bangkok', '1970-01-01 07:00:00'],
+            [0, 'Asia/Dubai', '1970-01-01 04:00:00'],
+            [0, 'Australia/Brisbane', '1970-01-01 10:00:00'],
+            [0, 'Australia/Eucla', '1970-01-01 08:45:00'],
+            [0, 'Australia/Melbourne', '1970-01-01 10:00:00'],
+            [0, 'Europe/Berlin', '1970-01-01 01:00:00'],
+            [0, 'Europe/Dublin', '1970-01-01 01:00:00'],
+            [0, 'Europe/Warsaw', '1970-01-01 01:00:00'],
+            [0, 'Pacific/Fiji', '1970-01-01 12:00:00'],
+        ];
 
         return $data;
     }
@@ -348,56 +348,56 @@ public function testFormatTimezone($pattern, $timezone, $expected)
 
     public function formatTimezoneProvider()
     {
-        $cases = array(
-            array('z', 'GMT', 'GMT'),
-            array('zz', 'GMT', 'GMT'),
-            array('zzz', 'GMT', 'GMT'),
-            array('zzzz', 'GMT', 'Greenwich Mean Time'),
-            array('zzzzz', 'GMT', 'Greenwich Mean Time'),
-
-            array('z', 'Etc/GMT', 'GMT'),
-            array('zz', 'Etc/GMT', 'GMT'),
-            array('zzz', 'Etc/GMT', 'GMT'),
-            array('zzzz', 'Etc/GMT', 'Greenwich Mean Time'),
-            array('zzzzz', 'Etc/GMT', 'Greenwich Mean Time'),
-
-            array('z', 'Etc/GMT+3', 'GMT-3'),
-            array('zz', 'Etc/GMT+3', 'GMT-3'),
-            array('zzz', 'Etc/GMT+3', 'GMT-3'),
-            array('zzzz', 'Etc/GMT+3', 'GMT-03:00'),
-            array('zzzzz', 'Etc/GMT+3', 'GMT-03:00'),
-
-            array('z', 'UTC', 'UTC'),
-            array('zz', 'UTC', 'UTC'),
-            array('zzz', 'UTC', 'UTC'),
-            array('zzzz', 'UTC', 'Coordinated Universal Time'),
-            array('zzzzz', 'UTC', 'Coordinated Universal Time'),
-
-            array('z', 'Etc/UTC', 'UTC'),
-            array('zz', 'Etc/UTC', 'UTC'),
-            array('zzz', 'Etc/UTC', 'UTC'),
-            array('zzzz', 'Etc/UTC', 'Coordinated Universal Time'),
-            array('zzzzz', 'Etc/UTC', 'Coordinated Universal Time'),
-
-            array('z', 'Etc/Universal', 'UTC'),
-            array('z', 'Etc/Zulu', 'UTC'),
-            array('z', 'Etc/UCT', 'UTC'),
-            array('z', 'Etc/Greenwich', 'GMT'),
-            array('zzzzz', 'Etc/Universal', 'Coordinated Universal Time'),
-            array('zzzzz', 'Etc/Zulu', 'Coordinated Universal Time'),
-            array('zzzzz', 'Etc/UCT', 'Coordinated Universal Time'),
-            array('zzzzz', 'Etc/Greenwich', 'Greenwich Mean Time'),
-        );
+        $cases = [
+            ['z', 'GMT', 'GMT'],
+            ['zz', 'GMT', 'GMT'],
+            ['zzz', 'GMT', 'GMT'],
+            ['zzzz', 'GMT', 'Greenwich Mean Time'],
+            ['zzzzz', 'GMT', 'Greenwich Mean Time'],
+
+            ['z', 'Etc/GMT', 'GMT'],
+            ['zz', 'Etc/GMT', 'GMT'],
+            ['zzz', 'Etc/GMT', 'GMT'],
+            ['zzzz', 'Etc/GMT', 'Greenwich Mean Time'],
+            ['zzzzz', 'Etc/GMT', 'Greenwich Mean Time'],
+
+            ['z', 'Etc/GMT+3', 'GMT-3'],
+            ['zz', 'Etc/GMT+3', 'GMT-3'],
+            ['zzz', 'Etc/GMT+3', 'GMT-3'],
+            ['zzzz', 'Etc/GMT+3', 'GMT-03:00'],
+            ['zzzzz', 'Etc/GMT+3', 'GMT-03:00'],
+
+            ['z', 'UTC', 'UTC'],
+            ['zz', 'UTC', 'UTC'],
+            ['zzz', 'UTC', 'UTC'],
+            ['zzzz', 'UTC', 'Coordinated Universal Time'],
+            ['zzzzz', 'UTC', 'Coordinated Universal Time'],
+
+            ['z', 'Etc/UTC', 'UTC'],
+            ['zz', 'Etc/UTC', 'UTC'],
+            ['zzz', 'Etc/UTC', 'UTC'],
+            ['zzzz', 'Etc/UTC', 'Coordinated Universal Time'],
+            ['zzzzz', 'Etc/UTC', 'Coordinated Universal Time'],
+
+            ['z', 'Etc/Universal', 'UTC'],
+            ['z', 'Etc/Zulu', 'UTC'],
+            ['z', 'Etc/UCT', 'UTC'],
+            ['z', 'Etc/Greenwich', 'GMT'],
+            ['zzzzz', 'Etc/Universal', 'Coordinated Universal Time'],
+            ['zzzzz', 'Etc/Zulu', 'Coordinated Universal Time'],
+            ['zzzzz', 'Etc/UCT', 'Coordinated Universal Time'],
+            ['zzzzz', 'Etc/Greenwich', 'Greenwich Mean Time'],
+        ];
 
         if (!\defined('HHVM_VERSION')) {
             // these timezones are not considered valid in HHVM
-            $cases = array_merge($cases, array(
-                array('z', 'GMT+03:00', 'GMT+3'),
-                array('zz', 'GMT+03:00', 'GMT+3'),
-                array('zzz', 'GMT+03:00', 'GMT+3'),
-                array('zzzz', 'GMT+03:00', 'GMT+03:00'),
-                array('zzzzz', 'GMT+03:00', 'GMT+03:00'),
-            ));
+            $cases = array_merge($cases, [
+                ['z', 'GMT+03:00', 'GMT+3'],
+                ['zz', 'GMT+03:00', 'GMT+3'],
+                ['zzz', 'GMT+03:00', 'GMT+3'],
+                ['zzzz', 'GMT+03:00', 'GMT+03:00'],
+                ['zzzzz', 'GMT+03:00', 'GMT+03:00'],
+            ]);
         }
 
         return $cases;
@@ -503,16 +503,16 @@ public function testDateAndTimeType($timestamp, $datetype, $timetype, $expected)
 
     public function dateAndTimeTypeProvider()
     {
-        return array(
-            array(0, IntlDateFormatter::FULL, IntlDateFormatter::NONE, 'Thursday, January 1, 1970'),
-            array(0, IntlDateFormatter::LONG, IntlDateFormatter::NONE, 'January 1, 1970'),
-            array(0, IntlDateFormatter::MEDIUM, IntlDateFormatter::NONE, 'Jan 1, 1970'),
-            array(0, IntlDateFormatter::SHORT, IntlDateFormatter::NONE, '1/1/70'),
-            array(0, IntlDateFormatter::NONE, IntlDateFormatter::FULL, '12:00:00 AM Coordinated Universal Time'),
-            array(0, IntlDateFormatter::NONE, IntlDateFormatter::LONG, '12:00:00 AM UTC'),
-            array(0, IntlDateFormatter::NONE, IntlDateFormatter::MEDIUM, '12:00:00 AM'),
-            array(0, IntlDateFormatter::NONE, IntlDateFormatter::SHORT, '12:00 AM'),
-        );
+        return [
+            [0, IntlDateFormatter::FULL, IntlDateFormatter::NONE, 'Thursday, January 1, 1970'],
+            [0, IntlDateFormatter::LONG, IntlDateFormatter::NONE, 'January 1, 1970'],
+            [0, IntlDateFormatter::MEDIUM, IntlDateFormatter::NONE, 'Jan 1, 1970'],
+            [0, IntlDateFormatter::SHORT, IntlDateFormatter::NONE, '1/1/70'],
+            [0, IntlDateFormatter::NONE, IntlDateFormatter::FULL, '12:00:00 AM Coordinated Universal Time'],
+            [0, IntlDateFormatter::NONE, IntlDateFormatter::LONG, '12:00:00 AM UTC'],
+            [0, IntlDateFormatter::NONE, IntlDateFormatter::MEDIUM, '12:00:00 AM'],
+            [0, IntlDateFormatter::NONE, IntlDateFormatter::SHORT, '12:00 AM'],
+        ];
     }
 
     public function testGetCalendar()
@@ -585,263 +585,263 @@ public function parseProvider()
 
     public function parseYearProvider()
     {
-        return array(
-            array('y-M-d', '1970-1-1', 0),
-            array('yy-M-d', '70-1-1', 0),
-        );
+        return [
+            ['y-M-d', '1970-1-1', 0],
+            ['yy-M-d', '70-1-1', 0],
+        ];
     }
 
     public function parseQuarterProvider()
     {
-        return array(
-            array('Q', '1', 0),
-            array('QQ', '01', 0),
-            array('QQQ', 'Q1', 0),
-            array('QQQQ', '1st quarter', 0),
-            array('QQQQQ', '1st quarter', 0),
-
-            array('Q', '2', 7776000),
-            array('QQ', '02', 7776000),
-            array('QQQ', 'Q2', 7776000),
-            array('QQQQ', '2nd quarter', 7776000),
-            array('QQQQQ', '2nd quarter', 7776000),
-
-            array('q', '1', 0),
-            array('qq', '01', 0),
-            array('qqq', 'Q1', 0),
-            array('qqqq', '1st quarter', 0),
-            array('qqqqq', '1st quarter', 0),
-        );
+        return [
+            ['Q', '1', 0],
+            ['QQ', '01', 0],
+            ['QQQ', 'Q1', 0],
+            ['QQQQ', '1st quarter', 0],
+            ['QQQQQ', '1st quarter', 0],
+
+            ['Q', '2', 7776000],
+            ['QQ', '02', 7776000],
+            ['QQQ', 'Q2', 7776000],
+            ['QQQQ', '2nd quarter', 7776000],
+            ['QQQQQ', '2nd quarter', 7776000],
+
+            ['q', '1', 0],
+            ['qq', '01', 0],
+            ['qqq', 'Q1', 0],
+            ['qqqq', '1st quarter', 0],
+            ['qqqqq', '1st quarter', 0],
+        ];
     }
 
     public function parseMonthProvider()
     {
-        return array(
-            array('y-M-d', '1970-1-1', 0),
-            array('y-MMM-d', '1970-Jan-1', 0),
-            array('y-MMMM-d', '1970-January-1', 0),
-        );
+        return [
+            ['y-M-d', '1970-1-1', 0],
+            ['y-MMM-d', '1970-Jan-1', 0],
+            ['y-MMMM-d', '1970-January-1', 0],
+        ];
     }
 
     public function parseStandaloneMonthProvider()
     {
-        return array(
-            array('y-L-d', '1970-1-1', 0),
-            array('y-LLL-d', '1970-Jan-1', 0),
-            array('y-LLLL-d', '1970-January-1', 0),
-        );
+        return [
+            ['y-L-d', '1970-1-1', 0],
+            ['y-LLL-d', '1970-Jan-1', 0],
+            ['y-LLLL-d', '1970-January-1', 0],
+        ];
     }
 
     public function parseDayProvider()
     {
-        return array(
-            array('y-M-d', '1970-1-1', 0),
-            array('y-M-dd', '1970-1-01', 0),
-            array('y-M-ddd', '1970-1-001', 0),
-        );
+        return [
+            ['y-M-d', '1970-1-1', 0],
+            ['y-M-dd', '1970-1-01', 0],
+            ['y-M-ddd', '1970-1-001', 0],
+        ];
     }
 
     public function parseDayOfWeekProvider()
     {
-        return array(
-            array('E', 'Thu', 0),
-            array('EE', 'Thu', 0),
-            array('EEE', 'Thu', 0),
-            array('EEEE', 'Thursday', 0),
-            array('EEEEE', 'T', 432000),
-            array('EEEEEE', 'Th', 0),
-        );
+        return [
+            ['E', 'Thu', 0],
+            ['EE', 'Thu', 0],
+            ['EEE', 'Thu', 0],
+            ['EEEE', 'Thursday', 0],
+            ['EEEEE', 'T', 432000],
+            ['EEEEEE', 'Th', 0],
+        ];
     }
 
     public function parseDayOfYearProvider()
     {
-        return array(
-            array('D', '1', 0),
-            array('D', '2', 86400),
-        );
+        return [
+            ['D', '1', 0],
+            ['D', '2', 86400],
+        ];
     }
 
     public function parseHour12ClockOneBasedProvider()
     {
-        return array(
+        return [
             // 12 hours (1-12)
-            array('y-M-d h', '1970-1-1 1', 3600),
-            array('y-M-d h', '1970-1-1 10', 36000),
-            array('y-M-d hh', '1970-1-1 11', 39600),
-            array('y-M-d hh', '1970-1-1 12', 0),
-            array('y-M-d hh a', '1970-1-1 0 AM', 0),
-            array('y-M-d hh a', '1970-1-1 1 AM', 3600),
-            array('y-M-d hh a', '1970-1-1 10 AM', 36000),
-            array('y-M-d hh a', '1970-1-1 11 AM', 39600),
-            array('y-M-d hh a', '1970-1-1 12 AM', 0),
-            array('y-M-d hh a', '1970-1-1 23 AM', 82800),
-            array('y-M-d hh a', '1970-1-1 24 AM', 86400),
-            array('y-M-d hh a', '1970-1-1 0 PM', 43200),
-            array('y-M-d hh a', '1970-1-1 1 PM', 46800),
-            array('y-M-d hh a', '1970-1-1 10 PM', 79200),
-            array('y-M-d hh a', '1970-1-1 11 PM', 82800),
-            array('y-M-d hh a', '1970-1-1 12 PM', 43200),
-            array('y-M-d hh a', '1970-1-1 23 PM', 126000),
-            array('y-M-d hh a', '1970-1-1 24 PM', 129600),
-        );
+            ['y-M-d h', '1970-1-1 1', 3600],
+            ['y-M-d h', '1970-1-1 10', 36000],
+            ['y-M-d hh', '1970-1-1 11', 39600],
+            ['y-M-d hh', '1970-1-1 12', 0],
+            ['y-M-d hh a', '1970-1-1 0 AM', 0],
+            ['y-M-d hh a', '1970-1-1 1 AM', 3600],
+            ['y-M-d hh a', '1970-1-1 10 AM', 36000],
+            ['y-M-d hh a', '1970-1-1 11 AM', 39600],
+            ['y-M-d hh a', '1970-1-1 12 AM', 0],
+            ['y-M-d hh a', '1970-1-1 23 AM', 82800],
+            ['y-M-d hh a', '1970-1-1 24 AM', 86400],
+            ['y-M-d hh a', '1970-1-1 0 PM', 43200],
+            ['y-M-d hh a', '1970-1-1 1 PM', 46800],
+            ['y-M-d hh a', '1970-1-1 10 PM', 79200],
+            ['y-M-d hh a', '1970-1-1 11 PM', 82800],
+            ['y-M-d hh a', '1970-1-1 12 PM', 43200],
+            ['y-M-d hh a', '1970-1-1 23 PM', 126000],
+            ['y-M-d hh a', '1970-1-1 24 PM', 129600],
+        ];
     }
 
     public function parseHour12ClockZeroBasedProvider()
     {
-        return array(
+        return [
             // 12 hours (0-11)
-            array('y-M-d K', '1970-1-1 1', 3600),
-            array('y-M-d K', '1970-1-1 10', 36000),
-            array('y-M-d KK', '1970-1-1 11', 39600),
-            array('y-M-d KK', '1970-1-1 12', 43200),
-            array('y-M-d KK a', '1970-1-1 0 AM', 0),
-            array('y-M-d KK a', '1970-1-1 1 AM', 3600),
-            array('y-M-d KK a', '1970-1-1 10 AM', 36000),
-            array('y-M-d KK a', '1970-1-1 11 AM', 39600),
-            array('y-M-d KK a', '1970-1-1 12 AM', 43200),
-            array('y-M-d KK a', '1970-1-1 23 AM', 82800),
-            array('y-M-d KK a', '1970-1-1 24 AM', 86400),
-            array('y-M-d KK a', '1970-1-1 0 PM', 43200),
-            array('y-M-d KK a', '1970-1-1 1 PM', 46800),
-            array('y-M-d KK a', '1970-1-1 10 PM', 79200),
-            array('y-M-d KK a', '1970-1-1 11 PM', 82800),
-            array('y-M-d KK a', '1970-1-1 12 PM', 86400),
-            array('y-M-d KK a', '1970-1-1 23 PM', 126000),
-            array('y-M-d KK a', '1970-1-1 24 PM', 129600),
-        );
+            ['y-M-d K', '1970-1-1 1', 3600],
+            ['y-M-d K', '1970-1-1 10', 36000],
+            ['y-M-d KK', '1970-1-1 11', 39600],
+            ['y-M-d KK', '1970-1-1 12', 43200],
+            ['y-M-d KK a', '1970-1-1 0 AM', 0],
+            ['y-M-d KK a', '1970-1-1 1 AM', 3600],
+            ['y-M-d KK a', '1970-1-1 10 AM', 36000],
+            ['y-M-d KK a', '1970-1-1 11 AM', 39600],
+            ['y-M-d KK a', '1970-1-1 12 AM', 43200],
+            ['y-M-d KK a', '1970-1-1 23 AM', 82800],
+            ['y-M-d KK a', '1970-1-1 24 AM', 86400],
+            ['y-M-d KK a', '1970-1-1 0 PM', 43200],
+            ['y-M-d KK a', '1970-1-1 1 PM', 46800],
+            ['y-M-d KK a', '1970-1-1 10 PM', 79200],
+            ['y-M-d KK a', '1970-1-1 11 PM', 82800],
+            ['y-M-d KK a', '1970-1-1 12 PM', 86400],
+            ['y-M-d KK a', '1970-1-1 23 PM', 126000],
+            ['y-M-d KK a', '1970-1-1 24 PM', 129600],
+        ];
     }
 
     public function parseHour24ClockOneBasedProvider()
     {
-        return array(
+        return [
             // 24 hours (1-24)
-            array('y-M-d k', '1970-1-1 1', 3600),
-            array('y-M-d k', '1970-1-1 10', 36000),
-            array('y-M-d kk', '1970-1-1 11', 39600),
-            array('y-M-d kk', '1970-1-1 12', 43200),
-            array('y-M-d kk', '1970-1-1 23', 82800),
-            array('y-M-d kk', '1970-1-1 24', 0),
-            array('y-M-d kk a', '1970-1-1 0 AM', 0),
-            array('y-M-d kk a', '1970-1-1 1 AM', 0),
-            array('y-M-d kk a', '1970-1-1 10 AM', 0),
-            array('y-M-d kk a', '1970-1-1 11 AM', 0),
-            array('y-M-d kk a', '1970-1-1 12 AM', 0),
-            array('y-M-d kk a', '1970-1-1 23 AM', 0),
-            array('y-M-d kk a', '1970-1-1 24 AM', 0),
-            array('y-M-d kk a', '1970-1-1 0 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 1 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 10 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 11 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 12 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 23 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 24 PM', 43200),
-        );
+            ['y-M-d k', '1970-1-1 1', 3600],
+            ['y-M-d k', '1970-1-1 10', 36000],
+            ['y-M-d kk', '1970-1-1 11', 39600],
+            ['y-M-d kk', '1970-1-1 12', 43200],
+            ['y-M-d kk', '1970-1-1 23', 82800],
+            ['y-M-d kk', '1970-1-1 24', 0],
+            ['y-M-d kk a', '1970-1-1 0 AM', 0],
+            ['y-M-d kk a', '1970-1-1 1 AM', 0],
+            ['y-M-d kk a', '1970-1-1 10 AM', 0],
+            ['y-M-d kk a', '1970-1-1 11 AM', 0],
+            ['y-M-d kk a', '1970-1-1 12 AM', 0],
+            ['y-M-d kk a', '1970-1-1 23 AM', 0],
+            ['y-M-d kk a', '1970-1-1 24 AM', 0],
+            ['y-M-d kk a', '1970-1-1 0 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 1 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 10 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 11 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 12 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 23 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 24 PM', 43200],
+        ];
     }
 
     public function parseHour24ClockZeroBasedProvider()
     {
-        return array(
+        return [
             // 24 hours (0-23)
-            array('y-M-d H', '1970-1-1 0', 0),
-            array('y-M-d H', '1970-1-1 1', 3600),
-            array('y-M-d H', '1970-1-1 10', 36000),
-            array('y-M-d HH', '1970-1-1 11', 39600),
-            array('y-M-d HH', '1970-1-1 12', 43200),
-            array('y-M-d HH', '1970-1-1 23', 82800),
-            array('y-M-d HH a', '1970-1-1 0 AM', 0),
-            array('y-M-d HH a', '1970-1-1 1 AM', 0),
-            array('y-M-d HH a', '1970-1-1 10 AM', 0),
-            array('y-M-d HH a', '1970-1-1 11 AM', 0),
-            array('y-M-d HH a', '1970-1-1 12 AM', 0),
-            array('y-M-d HH a', '1970-1-1 23 AM', 0),
-            array('y-M-d HH a', '1970-1-1 24 AM', 0),
-            array('y-M-d HH a', '1970-1-1 0 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 1 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 10 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 11 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 12 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 23 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 24 PM', 43200),
-        );
+            ['y-M-d H', '1970-1-1 0', 0],
+            ['y-M-d H', '1970-1-1 1', 3600],
+            ['y-M-d H', '1970-1-1 10', 36000],
+            ['y-M-d HH', '1970-1-1 11', 39600],
+            ['y-M-d HH', '1970-1-1 12', 43200],
+            ['y-M-d HH', '1970-1-1 23', 82800],
+            ['y-M-d HH a', '1970-1-1 0 AM', 0],
+            ['y-M-d HH a', '1970-1-1 1 AM', 0],
+            ['y-M-d HH a', '1970-1-1 10 AM', 0],
+            ['y-M-d HH a', '1970-1-1 11 AM', 0],
+            ['y-M-d HH a', '1970-1-1 12 AM', 0],
+            ['y-M-d HH a', '1970-1-1 23 AM', 0],
+            ['y-M-d HH a', '1970-1-1 24 AM', 0],
+            ['y-M-d HH a', '1970-1-1 0 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 1 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 10 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 11 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 12 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 23 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 24 PM', 43200],
+        ];
     }
 
     public function parseMinuteProvider()
     {
-        return array(
-            array('y-M-d HH:m', '1970-1-1 0:1', 60),
-            array('y-M-d HH:mm', '1970-1-1 0:10', 600),
-        );
+        return [
+            ['y-M-d HH:m', '1970-1-1 0:1', 60],
+            ['y-M-d HH:mm', '1970-1-1 0:10', 600],
+        ];
     }
 
     public function parseSecondProvider()
     {
-        return array(
-            array('y-M-d HH:mm:s', '1970-1-1 00:01:1', 61),
-            array('y-M-d HH:mm:ss', '1970-1-1 00:01:10', 70),
-        );
+        return [
+            ['y-M-d HH:mm:s', '1970-1-1 00:01:1', 61],
+            ['y-M-d HH:mm:ss', '1970-1-1 00:01:10', 70],
+        ];
     }
 
     public function parseTimezoneProvider()
     {
-        return array(
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-03:00', 10800),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-04:00', 14400),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-00:00', 0),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+03:00', -10800),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+04:00', -14400),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-0300', 10800),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+0300', -10800),
+        return [
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-03:00', 10800],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-04:00', 14400],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-00:00', 0],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+03:00', -10800],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+04:00', -14400],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-0300', 10800],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+0300', -10800],
 
             // a previous timezone parsing should not change the timezone for the next parsing
-            array('y-M-d HH:mm:ss', '1970-1-1 00:00:00', 0),
-        );
+            ['y-M-d HH:mm:ss', '1970-1-1 00:00:00', 0],
+        ];
     }
 
     public function parseAmPmProvider()
     {
-        return array(
+        return [
             // AM/PM (already covered by hours tests)
-            array('y-M-d HH:mm:ss a', '1970-1-1 00:00:00 AM', 0),
-            array('y-M-d HH:mm:ss a', '1970-1-1 00:00:00 PM', 43200),
-        );
+            ['y-M-d HH:mm:ss a', '1970-1-1 00:00:00 AM', 0],
+            ['y-M-d HH:mm:ss a', '1970-1-1 00:00:00 PM', 43200],
+        ];
     }
 
     public function parseStandaloneAmPmProvider()
     {
-        return array(
-            array('a', 'AM', 0),
-            array('a', 'PM', 43200),
-        );
+        return [
+            ['a', 'AM', 0],
+            ['a', 'PM', 43200],
+        ];
     }
 
     public function parseRegexMetaCharsProvider()
     {
-        return array(
+        return [
             // regexp meta chars in the pattern string
-            array('y[M-d', '1970[1-1', 0),
-            array('y[M/d', '1970[1/1', 0),
-        );
+            ['y[M-d', '1970[1-1', 0],
+            ['y[M/d', '1970[1/1', 0],
+        ];
     }
 
     public function parseQuoteCharsProvider()
     {
-        return array(
-            array("'M'", 'M', 0),
-            array("'yy'", 'yy', 0),
-            array("'''yy'", "'yy", 0),
-            array("''y", "'1970", 0),
-            array("H 'o'' clock'", "0 o' clock", 0),
-        );
+        return [
+            ["'M'", 'M', 0],
+            ["'yy'", 'yy', 0],
+            ["'''yy'", "'yy", 0],
+            ["''y", "'1970", 0],
+            ["H 'o'' clock'", "0 o' clock", 0],
+        ];
     }
 
     public function parseDashSlashProvider()
     {
-        return array(
-            array('y-M-d', '1970/1/1', 0),
-            array('yy-M-d', '70/1/1', 0),
-            array('y/M/d', '1970-1-1', 0),
-            array('yy/M/d', '70-1-1', 0),
-        );
+        return [
+            ['y-M-d', '1970/1/1', 0],
+            ['yy-M-d', '70/1/1', 0],
+            ['y/M/d', '1970-1-1', 0],
+            ['yy/M/d', '70-1-1', 0],
+        ];
     }
 
     /**
@@ -859,15 +859,15 @@ public function testParseError($pattern, $value)
 
     public function parseErrorProvider()
     {
-        return array(
+        return [
             // 1 char month
-            array('y-MMMMM-d', '1970-J-1'),
-            array('y-MMMMM-d', '1970-S-1'),
+            ['y-MMMMM-d', '1970-J-1'],
+            ['y-MMMMM-d', '1970-S-1'],
 
             // standalone 1 char month
-            array('y-LLLLL-d', '1970-J-1'),
-            array('y-LLLLL-d', '1970-S-1'),
-        );
+            ['y-LLLLL-d', '1970-J-1'],
+            ['y-LLLLL-d', '1970-S-1'],
+        ];
     }
 
     /*
@@ -910,16 +910,16 @@ public function testSetTimeZoneId($timeZoneId, $expectedTimeZoneId)
 
     public function setTimeZoneIdProvider()
     {
-        return array(
-            array('UTC', 'UTC'),
-            array('GMT', 'GMT'),
-            array('GMT-03:00', 'GMT-03:00'),
-            array('Europe/Zurich', 'Europe/Zurich'),
-            array(null, date_default_timezone_get()),
-            array('Foo/Bar', 'UTC'),
-            array('GMT+00:AA', 'UTC'),
-            array('GMT+00AA', 'UTC'),
-        );
+        return [
+            ['UTC', 'UTC'],
+            ['GMT', 'GMT'],
+            ['GMT-03:00', 'GMT-03:00'],
+            ['Europe/Zurich', 'Europe/Zurich'],
+            [null, date_default_timezone_get()],
+            ['Foo/Bar', 'UTC'],
+            ['GMT+00:AA', 'UTC'],
+            ['GMT+00AA', 'UTC'],
+        ];
     }
 
     protected function getDefaultDateFormatter($pattern = null)
diff --git a/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php b/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
index 88af2e775b94..03c69d27c493 100644
--- a/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
+++ b/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
@@ -52,7 +52,7 @@ public function testFormatWithUnsupportedTimestampArgument()
     {
         $formatter = $this->getDefaultDateFormatter();
 
-        $localtime = array(
+        $localtime = [
             'tm_sec' => 59,
             'tm_min' => 3,
             'tm_hour' => 15,
@@ -62,7 +62,7 @@ public function testFormatWithUnsupportedTimestampArgument()
             'tm_wday' => 0,
             'tm_yday' => 105,
             'tm_isdst' => 0,
-        );
+        ];
 
         try {
             $formatter->format($localtime);
@@ -89,7 +89,7 @@ public function testFormatWithUnimplementedChars()
     public function testFormatWithNonIntegerTimestamp()
     {
         $formatter = $this->getDefaultDateFormatter();
-        $formatter->format(array());
+        $formatter->format([]);
     }
 
     public function testGetErrorCode()
@@ -220,7 +220,7 @@ protected function isIntlFailure($errorCode)
     private function notImplemented(array $dataSets)
     {
         return array_map(function ($row) {
-            return array($row[0], $row[1], 0);
+            return [$row[0], $row[1], 0];
         }, $dataSets);
     }
 }
diff --git a/src/Symfony/Component/Intl/Tests/Globals/AbstractIntlGlobalsTest.php b/src/Symfony/Component/Intl/Tests/Globals/AbstractIntlGlobalsTest.php
index 57c75fb95494..2cb49ef8275b 100644
--- a/src/Symfony/Component/Intl/Tests/Globals/AbstractIntlGlobalsTest.php
+++ b/src/Symfony/Component/Intl/Tests/Globals/AbstractIntlGlobalsTest.php
@@ -22,13 +22,13 @@ abstract class AbstractIntlGlobalsTest extends TestCase
 {
     public function errorNameProvider()
     {
-        return array(
-            array(-129, '[BOGUS UErrorCode]'),
-            array(0, 'U_ZERO_ERROR'),
-            array(1, 'U_ILLEGAL_ARGUMENT_ERROR'),
-            array(9, 'U_PARSE_ERROR'),
-            array(129, '[BOGUS UErrorCode]'),
-        );
+        return [
+            [-129, '[BOGUS UErrorCode]'],
+            [0, 'U_ZERO_ERROR'],
+            [1, 'U_ILLEGAL_ARGUMENT_ERROR'],
+            [9, 'U_PARSE_ERROR'],
+            [129, '[BOGUS UErrorCode]'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php b/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
index 932f659744c1..d087094da1d5 100644
--- a/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
+++ b/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
@@ -26,11 +26,11 @@ public function testAcceptFromHttp()
      */
     public function testComposeLocale()
     {
-        $subtags = array(
+        $subtags = [
             'language' => 'pt',
             'script' => 'Latn',
             'region' => 'BR',
-        );
+        ];
         $this->call('composeLocale', $subtags);
     }
 
@@ -127,10 +127,10 @@ public function testGetScript()
      */
     public function testLookup()
     {
-        $langtag = array(
+        $langtag = [
             'pt-Latn-BR',
             'pt-BR',
-        );
+        ];
         $this->call('lookup', $langtag, 'pt-BR-x-priv1');
     }
 
@@ -161,6 +161,6 @@ protected function call($methodName)
     {
         $args = \array_slice(\func_get_args(), 1);
 
-        return \call_user_func_array(array('Symfony\Component\Intl\Locale\Locale', $methodName), $args);
+        return \call_user_func_array(['Symfony\Component\Intl\Locale\Locale', $methodName], $args);
     }
 }
diff --git a/src/Symfony/Component/Intl/Tests/Locale/Verification/LocaleTest.php b/src/Symfony/Component/Intl/Tests/Locale/Verification/LocaleTest.php
index cdcc0fdeb664..13f2c4f5e285 100644
--- a/src/Symfony/Component/Intl/Tests/Locale/Verification/LocaleTest.php
+++ b/src/Symfony/Component/Intl/Tests/Locale/Verification/LocaleTest.php
@@ -33,6 +33,6 @@ protected function call($methodName)
     {
         $args = \array_slice(\func_get_args(), 1);
 
-        return \call_user_func_array(array('Locale', $methodName), $args);
+        return \call_user_func_array(['Locale', $methodName], $args);
     }
 }
diff --git a/src/Symfony/Component/Intl/Tests/LocaleTest.php b/src/Symfony/Component/Intl/Tests/LocaleTest.php
index 57059af9ae94..ff908cbcabd0 100644
--- a/src/Symfony/Component/Intl/Tests/LocaleTest.php
+++ b/src/Symfony/Component/Intl/Tests/LocaleTest.php
@@ -18,22 +18,22 @@ class LocaleTest extends TestCase
 {
     public function provideGetFallbackTests()
     {
-        $tests = array(
-            array('sl_Latn_IT', 'sl_Latn_IT_nedis'),
-            array('sl_Latn', 'sl_Latn_IT'),
-            array('fr', 'fr_FR'),
-            array('fr', 'fr-FR'),
-            array('en', 'fr'),
-            array('root', 'en'),
-            array(null, 'root'),
-        );
+        $tests = [
+            ['sl_Latn_IT', 'sl_Latn_IT_nedis'],
+            ['sl_Latn', 'sl_Latn_IT'],
+            ['fr', 'fr_FR'],
+            ['fr', 'fr-FR'],
+            ['en', 'fr'],
+            ['root', 'en'],
+            [null, 'root'],
+        ];
 
         if (\function_exists('locale_parse')) {
-            $tests[] = array('sl_Latn_IT', 'sl-Latn-IT-nedis');
-            $tests[] = array('sl_Latn', 'sl-Latn_IT');
+            $tests[] = ['sl_Latn_IT', 'sl-Latn-IT-nedis'];
+            $tests[] = ['sl_Latn', 'sl-Latn_IT'];
         } else {
-            $tests[] = array('sl-Latn-IT', 'sl-Latn-IT-nedis');
-            $tests[] = array('sl-Latn', 'sl-Latn-IT');
+            $tests[] = ['sl-Latn-IT', 'sl-Latn-IT-nedis'];
+            $tests[] = ['sl-Latn', 'sl-Latn-IT'];
         }
 
         return $tests;
diff --git a/src/Symfony/Component/Intl/Tests/NumberFormatter/AbstractNumberFormatterTest.php b/src/Symfony/Component/Intl/Tests/NumberFormatter/AbstractNumberFormatterTest.php
index 89be79574de9..ff1c2653e090 100644
--- a/src/Symfony/Component/Intl/Tests/NumberFormatter/AbstractNumberFormatterTest.php
+++ b/src/Symfony/Component/Intl/Tests/NumberFormatter/AbstractNumberFormatterTest.php
@@ -33,23 +33,23 @@ public function testFormatCurrencyWithDecimalStyle($value, $currency, $expected)
 
     public function formatCurrencyWithDecimalStyleProvider()
     {
-        return array(
-            array(100, 'ALL', '100'),
-            array(100, 'BRL', '100.00'),
-            array(100, 'CRC', '100'),
-            array(100, 'JPY', '100'),
-            array(100, 'CHF', '100'),
-            array(-100, 'ALL', '-100'),
-            array(-100, 'BRL', '-100'),
-            array(-100, 'CRC', '-100'),
-            array(-100, 'JPY', '-100'),
-            array(-100, 'CHF', '-100'),
-            array(1000.12, 'ALL', '1,000.12'),
-            array(1000.12, 'BRL', '1,000.12'),
-            array(1000.12, 'CRC', '1,000.12'),
-            array(1000.12, 'JPY', '1,000.12'),
-            array(1000.12, 'CHF', '1,000.12'),
-        );
+        return [
+            [100, 'ALL', '100'],
+            [100, 'BRL', '100.00'],
+            [100, 'CRC', '100'],
+            [100, 'JPY', '100'],
+            [100, 'CHF', '100'],
+            [-100, 'ALL', '-100'],
+            [-100, 'BRL', '-100'],
+            [-100, 'CRC', '-100'],
+            [-100, 'JPY', '-100'],
+            [-100, 'CHF', '-100'],
+            [1000.12, 'ALL', '1,000.12'],
+            [1000.12, 'BRL', '1,000.12'],
+            [1000.12, 'CRC', '1,000.12'],
+            [1000.12, 'JPY', '1,000.12'],
+            [1000.12, 'CHF', '1,000.12'],
+        ];
     }
 
     /**
@@ -65,19 +65,19 @@ public function testFormatCurrencyWithCurrencyStyle($value, $currency, $expected
 
     public function formatCurrencyWithCurrencyStyleProvider()
     {
-        return array(
-            array(100, 'ALL', "ALL\xc2\xa0100"),
-            array(-100, 'ALL', "-ALL\xc2\xa0100"),
-            array(1000.12, 'ALL', "ALL\xc2\xa01,000"),
+        return [
+            [100, 'ALL', "ALL\xc2\xa0100"],
+            [-100, 'ALL', "-ALL\xc2\xa0100"],
+            [1000.12, 'ALL', "ALL\xc2\xa01,000"],
 
-            array(100, 'JPY', '¥100'),
-            array(-100, 'JPY', '-¥100'),
-            array(1000.12, 'JPY', '¥1,000'),
+            [100, 'JPY', '¥100'],
+            [-100, 'JPY', '-¥100'],
+            [1000.12, 'JPY', '¥1,000'],
 
-            array(100, 'EUR', '€100.00'),
-            array(-100, 'EUR', '-€100.00'),
-            array(1000.12, 'EUR', '€1,000.12'),
-        );
+            [100, 'EUR', '€100.00'],
+            [-100, 'EUR', '-€100.00'],
+            [1000.12, 'EUR', '€1,000.12'],
+        ];
     }
 
     /**
@@ -93,11 +93,11 @@ public function testFormatCurrencyWithCurrencyStyleCostaRicanColonsRounding($val
 
     public function formatCurrencyWithCurrencyStyleCostaRicanColonsRoundingProvider()
     {
-        return array(
-            array(100, 'CRC', 'CRC', "%s\xc2\xa0100.00"),
-            array(-100, 'CRC', 'CRC', "-%s\xc2\xa0100.00"),
-            array(1000.12, 'CRC', 'CRC', "%s\xc2\xa01,000.12"),
-        );
+        return [
+            [100, 'CRC', 'CRC', "%s\xc2\xa0100.00"],
+            [-100, 'CRC', 'CRC', "-%s\xc2\xa0100.00"],
+            [1000.12, 'CRC', 'CRC', "%s\xc2\xa01,000.12"],
+        ];
     }
 
     /**
@@ -111,20 +111,20 @@ public function testFormatCurrencyWithCurrencyStyleBrazilianRealRounding($value,
 
     public function formatCurrencyWithCurrencyStyleBrazilianRealRoundingProvider()
     {
-        return array(
-            array(100, 'BRL', 'R', '%s$100.00'),
-            array(-100, 'BRL', 'R', '-%s$100.00'),
-            array(1000.12, 'BRL', 'R', '%s$1,000.12'),
+        return [
+            [100, 'BRL', 'R', '%s$100.00'],
+            [-100, 'BRL', 'R', '-%s$100.00'],
+            [1000.12, 'BRL', 'R', '%s$1,000.12'],
 
             // Rounding checks
-            array(1000.121, 'BRL', 'R', '%s$1,000.12'),
-            array(1000.123, 'BRL', 'R', '%s$1,000.12'),
-            array(1000.125, 'BRL', 'R', '%s$1,000.12'),
-            array(1000.127, 'BRL', 'R', '%s$1,000.13'
10000
),
-            array(1000.129, 'BRL', 'R', '%s$1,000.13'),
-            array(11.50999, 'BRL', 'R', '%s$11.51'),
-            array(11.9999464, 'BRL', 'R', '%s$12.00'),
-        );
+            [1000.121, 'BRL', 'R', '%s$1,000.12'],
+            [1000.123, 'BRL', 'R', '%s$1,000.12'],
+            [1000.125, 'BRL', 'R', '%s$1,000.12'],
+            [1000.127, 'BRL', 'R', '%s$1,000.13'],
+            [1000.129, 'BRL', 'R', '%s$1,000.13'],
+            [11.50999, 'BRL', 'R', '%s$11.51'],
+            [11.9999464, 'BRL', 'R', '%s$12.00'],
+        ];
     }
 
     /**
@@ -140,24 +140,24 @@ public function testFormatCurrencyWithCurrencyStyleSwissRounding($value, $curren
 
     public function formatCurrencyWithCurrencyStyleSwissRoundingProvider()
     {
-        return array(
-            array(100, 'CHF', 'CHF', "%s\xc2\xa0100.00"),
-            array(-100, 'CHF', 'CHF', "-%s\xc2\xa0100.00"),
-            array(1000.12, 'CHF', 'CHF', "%s\xc2\xa01,000.12"),
-            array('1000.12', 'CHF', 'CHF', "%s\xc2\xa01,000.12"),
+        return [
+            [100, 'CHF', 'CHF', "%s\xc2\xa0100.00"],
+            [-100, 'CHF', 'CHF', "-%s\xc2\xa0100.00"],
+            [1000.12, 'CHF', 'CHF', "%s\xc2\xa01,000.12"],
+            ['1000.12', 'CHF', 'CHF', "%s\xc2\xa01,000.12"],
 
             // Rounding checks
-            array(1000.121, 'CHF', 'CHF', "%s\xc2\xa01,000.12"),
-            array(1000.123, 'CHF', 'CHF', "%s\xc2\xa01,000.12"),
-            array(1000.125, 'CHF', 'CHF', "%s\xc2\xa01,000.12"),
-            array(1000.127, 'CHF', 'CHF', "%s\xc2\xa01,000.13"),
-            array(1000.129, 'CHF', 'CHF', "%s\xc2\xa01,000.13"),
+            [1000.121, 'CHF', 'CHF', "%s\xc2\xa01,000.12"],
+            [1000.123, 'CHF', 'CHF', "%s\xc2\xa01,000.12"],
+            [1000.125, 'CHF', 'CHF', "%s\xc2\xa01,000.12"],
+            [1000.127, 'CHF', 'CHF', "%s\xc2\xa01,000.13"],
+            [1000.129, 'CHF', 'CHF', "%s\xc2\xa01,000.13"],
 
-            array(1200000.00, 'CHF', 'CHF', "%s\xc2\xa01,200,000.00"),
-            array(1200000.1, 'CHF', 'CHF', "%s\xc2\xa01,200,000.10"),
-            array(1200000.10, 'CHF', 'CHF', "%s\xc2\xa01,200,000.10"),
-            array(1200000.101, 'CHF', 'CHF', "%s\xc2\xa01,200,000.10"),
-        );
+            [1200000.00, 'CHF', 'CHF', "%s\xc2\xa01,200,000.00"],
+            [1200000.1, 'CHF', 'CHF', "%s\xc2\xa01,200,000.10"],
+            [1200000.10, 'CHF', 'CHF', "%s\xc2\xa01,200,000.10"],
+            [1200000.101, 'CHF', 'CHF', "%s\xc2\xa01,200,000.10"],
+        ];
     }
 
     public function testFormat()
@@ -199,12 +199,12 @@ public function formatTypeInt32Provider()
 
         $message = '->format() TYPE_INT32 formats inconsistently an integer if out of the 32 bit range.';
 
-        return array(
-            array($formatter, 1, '1'),
-            array($formatter, 1.1, '1'),
-            array($formatter, 2147483648, '-2,147,483,648', $message),
-            array($formatter, -2147483649, '2,147,483,647', $message),
-        );
+        return [
+            [$formatter, 1, '1'],
+            [$formatter, 1.1, '1'],
+            [$formatter, 2147483648, '-2,147,483,648', $message],
+            [$formatter, -2147483649, '2,147,483,647', $message],
+        ];
     }
 
     /**
@@ -224,12 +224,12 @@ public function formatTypeInt32WithCurrencyStyleProvider()
 
         $message = '->format() TYPE_INT32 formats inconsistently an integer if out of the 32 bit range.';
 
-        return array(
-            array($formatter, 1, '¤1.00'),
-            array($formatter, 1.1, '¤1.00'),
-            array($formatter, 2147483648, '-¤2,147,483,648.00', $message),
-            array($formatter, -2147483649, '¤2,147,483,647.00', $message),
-        );
+        return [
+            [$formatter, 1, '¤1.00'],
+            [$formatter, 1.1, '¤1.00'],
+            [$formatter, 2147483648, '-¤2,147,483,648.00', $message],
+            [$formatter, -2147483649, '¤2,147,483,647.00', $message],
+        ];
     }
 
     /**
@@ -247,12 +247,12 @@ public function formatTypeInt64Provider()
     {
         $formatter = $this->getNumberFormatter('en', NumberFormatter::DECIMAL);
 
-        return array(
-            array($formatter, 1, '1'),
-            array($formatter, 1.1, '1'),
-            array($formatter, 2147483648, '2,147,483,648'),
-            array($formatter, -2147483649, '-2,147,483,649'),
-        );
+        return [
+            [$formatter, 1, '1'],
+            [$formatter, 1.1, '1'],
+            [$formatter, 2147483648, '2,147,483,648'],
+            [$formatter, -2147483649, '-2,147,483,649'],
+        ];
     }
 
     /**
@@ -270,12 +270,12 @@ public function formatTypeInt64WithCurrencyStyleProvider()
     {
         $formatter = $this->getNumberFormatter('en', NumberFormatter::CURRENCY);
 
-        return array(
-            array($formatter, 1, '¤1.00'),
-            array($formatter, 1.1, '¤1.00'),
-            array($formatter, 2147483648, '¤2,147,483,648.00'),
-            array($formatter, -2147483649, '-¤2,147,483,649.00'),
-        );
+        return [
+            [$formatter, 1, '¤1.00'],
+            [$formatter, 1.1, '¤1.00'],
+            [$formatter, 2147483648, '¤2,147,483,648.00'],
+            [$formatter, -2147483649, '-¤2,147,483,649.00'],
+        ];
     }
 
     /**
@@ -291,10 +291,10 @@ public function formatTypeDoubleProvider()
     {
         $formatter = $this->getNumberFormatter('en', NumberFormatter::DECIMAL);
 
-        return array(
-            array($formatter, 1, '1'),
-            array($formatter, 1.1, '1.1'),
-        );
+        return [
+            [$formatter, 1, '1'],
+            [$formatter, 1.1, '1.1'],
+        ];
     }
 
     /**
@@ -312,10 +312,10 @@ public function formatTypeDoubleWithCurrencyStyleProvider()
     {
         $formatter = $this->getNumberFormatter('en', NumberFormatter::CURRENCY);
 
-        return array(
-            array($formatter, 1, '¤1.00'),
-            array($formatter, 1.1, '¤1.10'),
-        );
+        return [
+            [$formatter, 1, '¤1.00'],
+            [$formatter, 1.1, '¤1.10'],
+        ];
     }
 
     /**
@@ -347,10 +347,10 @@ public function formatTypeCurrencyProvider()
         $df = $this->getNumberFormatter('en', NumberFormatter::DECIMAL);
         $cf = $this->getNumberFormatter('en', NumberFormatter::CURRENCY);
 
-        return array(
-            array($df, 1),
-            array($cf, 1),
-        );
+        return [
+            [$df, 1],
+            [$cf, 1],
+        ];
     }
 
     /**
@@ -378,14 +378,14 @@ public function testFormatFractionDigits($value, $expected, $fractionDigits = nu
 
     public function formatFractionDigitsProvider()
     {
-        return array(
-            array(1.123, '1.123', null, 0),
-            array(1.123, '1', 0, 0),
-            array(1.123, '1.1', 1, 1),
-            array(1.123, '1.12', 2, 2),
-            array(1.123, '1.123', -1, 0),
-            array(1.123, '1', 'abc', 0),
-        );
+        return [
+            [1.123, '1.123', null, 0],
+            [1.123, '1', 0, 0],
+            [1.123, '1.1', 1, 1],
+            [1.123, '1.12', 2, 2],
+            [1.123, '1.123', -1, 0],
+            [1.123, '1', 'abc', 0],
+        ];
     }
 
     /**
@@ -411,14 +411,14 @@ public function testFormatGroupingUsed($value, $expected, $groupingUsed = null,
 
     public function formatGroupingUsedProvider()
     {
-        return array(
-            array(1000, '1,000', null, 1),
-            array(1000, '1000', 0, 0),
-            array(1000, '1,000', 1, 1),
-            array(1000, '1,000', 2, 1),
-            array(1000, '1000', 'abc', 0),
-            array(1000, '1,000', -1, 1),
-        );
+        return [
+            [1000, '1,000', null, 1],
+            [1000, '1000', 0, 0],
+            [1000, '1,000', 1, 1],
+            [1000, '1,000', 2, 1],
+            [1000, '1000', 'abc', 0],
+            [1000, '1,000', -1, 1],
+        ];
     }
 
     /**
@@ -436,14 +436,14 @@ public function testFormatRoundingModeHalfUp($value, $expected)
     public function formatRoundingModeRoundHalfUpProvider()
     {
         // The commented value is differently rounded by intl's NumberFormatter in 32 and 64 bit architectures
-        return array(
-            array(1.121, '1.12'),
-            array(1.123, '1.12'),
+        return [
+            [1.121, '1.12'],
+            [1.123, '1.12'],
             // array(1.125, '1.13'),
-            array(1.127, '1.13'),
-            array(1.129, '1.13'),
-            array(1020 / 100, '10.20'),
-        );
+            [1.127, '1.13'],
+            [1.129, '1.13'],
+            [1020 / 100, '10.20'],
+        ];
     }
 
     /**
@@ -460,14 +460,14 @@ public function testFormatRoundingModeHalfDown($value, $expected)
 
     public function formatRoundingModeRoundHalfDownProvider()
     {
-        return array(
-            array(1.121, '1.12'),
-            array(1.123, '1.12'),
-            array(1.125, '1.12'),
-            array(1.127, '1.13'),
-            array(1.129, '1.13'),
-            array(1020 / 100, '10.20'),
-        );
+        return [
+            [1.121, '1.12'],
+            [1.123, '1.12'],
+            [1.125, '1.12'],
+            [1.127, '1.13'],
+            [1.129, '1.13'],
+            [1020 / 100, '10.20'],
+        ];
     }
 
     /**
@@ -484,14 +484,14 @@ public function testFormatRoundingModeHalfEven($value, $expected)
 
     public function formatRoundingModeRoundHalfEvenProvider()
     {
-        return array(
-            array(1.121, '1.12'),
-            array(1.123, '1.12'),
-            array(1.125, '1.12'),
-            array(1.127, '1.13'),
-            array(1.129, '1.13'),
-            array(1020 / 100, '10.20'),
-        );
+        return [
+            [1.121, '1.12'],
+            [1.123, '1.12'],
+            [1.125, '1.12'],
+            [1.127, '1.13'],
+            [1.129, '1.13'],
+            [1020 / 100, '10.20'],
+        ];
     }
 
     /**
@@ -508,15 +508,15 @@ public function testFormatRoundingModeCeiling($value, $expected)
 
     public function formatRoundingModeRoundCeilingProvider()
     {
-        return array(
-            array(1.123, '1.13'),
-            array(1.125, '1.13'),
-            array(1.127, '1.13'),
-            array(-1.123, '-1.12'),
-            array(-1.125, '-1.12'),
-            array(-1.127, '-1.12'),
-            array(1020 / 100, '10.20'),
-        );
+        return [
+            [1.123, '1.13'],
+            [1.125, '1.13'],
+            [1.127, '1.13'],
+            [-1.123, '-1.12'],
+            [-1.125, '-1.12'],
+            [-1.127, '-1.12'],
+            [1020 / 100, '10.20'],
+        ];
     }
 
     /**
@@ -533,15 +533,15 @@ public function testFormatRoundingModeFloor($value, $expected)
 
     public function formatRoundingModeRoundFloorProvider()
     {
-        return array(
-            array(1.123, '1.12'),
-            array(1.125, '1.12'),
-            array(1.127, '1.12'),
-            array(-1.123, '-1.13'),
-            array(-1.125, '-1.13'),
-            array(-1.127, '-1.13'),
-            array(1020 / 100, '10.20'),
-        );
+        return [
+            [1.123, '1.12'],
+            [1.125, '1.12'],
+            [1.127, '1.12'],
+            [-1.123, '-1.13'],
+            [-1.125, '-1.13'],
+            [-1.127, '-1.13'],
+            [1020 / 100, '10.20'],
+        ];
     }
 
     /**
@@ -558,15 +558,15 @@ public function testFormatRoundingModeDown($value, $expected)
 
     public function formatRoundingModeRoundDownProvider()
     {
-        return array(
-            array(1.123, '1.12'),
-            array(1.125, '1.12'),
-            array(1.127, '1.12'),
-            array(-1.123, '-1.12'),
-            array(-1.125, '-1.12'),
-            array(-1.127, '-1.12'),
-            array(1020 / 100, '10.20'),
-        );
+        return [
+            [1.123, '1.12'],
+            [1.125, '1.12'],
+            [1.127, '1.12'],
+            [-1.123, '-1.12'],
+            [-1.125, '-1.12'],
+            [-1.127, '-1.12'],
+            [1020 / 100, '10.20'],
+        ];
     }
 
     /**
@@ -583,15 +583,15 @@ public function testFormatRoundingModeUp($value, $expected)
 
     public function formatRoundingModeRoundUpProvider()
     {
-        return array(
-            array(1.123, '1.13'),
-            array(1.125, '1.13'),
-            array(1.127, '1.13'),
-            array(-1.123, '-1.13'),
-            array(-1.125, '-1.13'),
-            array(-1.127, '-1.13'),
-            array(1020 / 100, '10.20'),
-        );
+        return [
+            [1.123, '1.13'],
+            [1.125, '1.13'],
+            [1.127, '1.13'],
+            [-1.123, '-1.13'],
+            [-1.125, '-1.13'],
+            [-1.127, '-1.13'],
+            [1020 / 100, '10.20'],
+        ];
     }
 
     public function testGetLocale()
@@ -664,44 +664,44 @@ public function testParse($value, $expected, $message, $expectedPosition, $group
 
     public function parseProvider()
     {
-        return array(
-            array('prefix1', false, '->parse() does not parse a number with a string prefix.', 0),
-            array('prefix1', false, '->parse() does not parse a number with a string prefix.', 0, false),
-            array('1.4suffix', (float) 1.4, '->parse() parses a number with a string suffix.', 3),
-            array('1.4suffix', (float) 1.4, '->parse() parses a number with a string suffix.', 3, false),
-            array('1,234.4suffix', 1234.4, '->parse() parses a number with a string suffix.', 7),
-            array('1,234.4suffix', 1.0, '->parse() parses a number with a string suffix.', 1, false),
-            array('-.4suffix', (float) -0.4, '->parse() parses a negative dot float with suffix.', 3),
-            array('-.4suffix', (float) -0.4, '->parse() parses a negative dot float with suffix.', 3, false),
-            array(',4', false, '->parse() does not parse when invalid grouping used.', 0),
-            array(',4', false, '->parse() does not parse when invalid grouping used.', 0, false),
-            array('123,4', false, '->parse() does not parse when invalid grouping used.', 0),
-            array('123,4', 123.0, '->parse() truncates invalid grouping when grouping is disabled.', 3, false),
-            array('123,a4', 123.0, '->parse() truncates a string suffix.', 3),
-            array('123,a4', 123.0, '->parse() truncates a string suffix.', 3, false),
-            array('-123,4', false, '->parse() does not parse when invalid grouping used.', 1),
-            array('-123,4', -123.0, '->parse() truncates invalid grouping when grouping is disabled.', 4, false),
-            array('-123,4567', false, '->parse() does not parse when invalid grouping used.', 1),
-            array('-123,4567', -123.0, '->parse() truncates invalid grouping when grouping is disabled.', 4, false),
-            array('-123,456,789', -123456789.0, '->parse() parses a number with grouping.', 12),
-            array('-123,456,789', -123.0, '->parse() truncates a group if grouping is disabled.', 4, false),
-            array('-123,456,789.66', -123456789.66, '->parse() parses a number with grouping.', 15),
-            array('-123,456,789.66', -123.00, '->parse() truncates a group if grouping is disabled.', 4, false),
-            array('-123,456789.66', false, '->parse() does not parse when invalid grouping used.', 1),
-            array('-123,456789.66', -123.00, '->parse() truncates a group if grouping is disabled.', 4, false),
-            array('-123456,789.66', false, '->parse() does not parse when invalid grouping used.', 1),
-            array('-123456,789.66', -123456.00, '->parse() truncates a group if grouping is disabled.', 7, false),
-            array('-123,456,78', false, '->parse() does not parse when invalid grouping used.', 1),
-            array('-123,456,78', -123.0, '->parse() truncates a group if grouping is disabled.', 4, false),
-            array('-123,45,789', false, '->parse() does not parse when invalid grouping used.', 1),
-            array('-123,45,789', -123.0, '->parse() truncates a group if grouping is disabled.', 4, false),
-            array('-123,,456', -123.0, '->parse() parses when grouping is duplicated.', 4),
-            array('-123,,456', -123.0, '->parse() parses when grouping is disabled.', 4, false),
-            array('-123,,4', -123.0, '->parse() parses when grouping is duplicated.', 4),
-            array('-123,,4', -123.0, '->parse() parses when grouping is duplicated.', 4, false),
-            array('239.', 239.0, '->parse() parses when string ends with decimal separator.', 4),
-            array('239.', 239.0, '->parse() parses when string ends with decimal separator.', 4, false),
-        );
+        return [
+            ['prefix1', false, '->parse() does not parse a number with a string prefix.', 0],
+            ['prefix1', false, '->parse() does not parse a number with a string prefix.', 0, false],
+            ['1.4suffix', (float) 1.4, '->parse() parses a number with a string suffix.', 3],
+            ['1.4suffix', (float) 1.4, '->parse() parses a number with a string suffix.', 3, false],
+            ['1,234.4suffix', 1234.4, '->parse() parses a number with a string suffix.', 7],
+            ['1,234.4suffix', 1.0, '->parse() parses a number with a string suffix.', 1, false],
+            ['-.4suffix', (float) -0.4, '->parse() parses a negative dot float with suffix.', 3],
+            ['-.4suffix', (float) -0.4, '->parse() parses a negative dot float with suffix.', 3, false],
+            [',4', false, '->parse() does not parse when invalid grouping used.', 0],
+            [',4', false, '->parse() does not parse when invalid grouping used.', 0, false],
+            ['123,4', false, '->parse() does not parse when invalid grouping used.', 0],
+            ['123,4', 123.0, '->parse() truncates invalid grouping when grouping is disabled.', 3, false],
+            ['123,a4', 123.0, '->parse() truncates a string suffix.', 3],
+            ['123,a4', 123.0, '->parse() truncates a string suffix.', 3, false],
+            ['-123,4', false, '->parse() does not parse when invalid grouping used.', 1],
+            ['-123,4', -123.0, '->parse() truncates invalid grouping when grouping is disabled.', 4, false],
+            ['-123,4567', false, '->parse() does not parse when invalid grouping used.', 1],
+            ['-123,4567', -123.0, '->parse() truncates invalid grouping when grouping is disabled.', 4, false],
+            ['-123,456,789', -123456789.0, '->parse() parses a number with grouping.', 12],
+            ['-123,456,789', -123.0, '->parse() truncates a group if grouping is disabled.', 4, false],
+            ['-123,456,789.66', -123456789.66, '->parse() parses a number with grouping.', 15],
+            ['-123,456,789.66', -123.00, '->parse() truncates a group if grouping is disabled.', 4, false],
+            ['-123,456789.66', false, '->parse() does not parse when invalid grouping used.', 1],
+            ['-123,456789.66', -123.00, '->parse() truncates a group if grouping is disabled.', 4, false],
+            ['-123456,789.66', false, '->parse() does not parse when invalid grouping used.', 1],
+            ['-123456,789.66', -123456.00, '->parse() truncates a group if grouping is disabled.', 7, false],
+            ['-123,456,78', false, '->parse() does not parse when invalid grouping used.', 1],
+            ['-123,456,78', -123.0, '->parse() truncates a group if grouping is disabled.', 4, false],
+            ['-123,45,789', false, '->parse() does not parse when invalid grouping used.', 1],
+            ['-123,45,789', -123.0, '->parse() truncates a group if grouping is disabled.', 4, false],
+            ['-123,,456', -123.0, '->parse() parses when grouping is duplicated.', 4],
+            ['-123,,456', -123.0, '->parse() parses when grouping is disabled.', 4, false],
+            ['-123,,4', -123.0, '->parse() parses when grouping is duplicated.', 4],
+            ['-123,,4', -123.0, '->parse() parses when grouping is duplicated.', 4, false],
+            ['239.', 239.0, '->parse() parses when string ends with decimal separator.', 4],
+            ['239.', 239.0, '->parse() parses when string ends with decimal separator.', 4, false],
+        ];
     }
 
     public function testParseTypeDefault()
@@ -730,15 +730,15 @@ public function testParseTypeInt32($value, $expected, $message = '')
 
     public function parseTypeInt32Provider()
     {
-        return array(
-            array('1', 1),
-            array('1.1', 1),
-            array('.1', 0),
-            array('2,147,483,647', 2147483647),
-            array('-2,147,483,648', -2147483647 - 1),
-            array('2,147,483,648', false, '->parse() TYPE_INT32 returns false when the number is greater than the integer positive range.'),
-            array('-2,147,483,649', false, '->parse() TYPE_INT32 returns false when the number is greater than the integer negative range.'),
-        );
+        return [
+            ['1', 1],
+            ['1.1', 1],
+            ['.1', 0],
+            ['2,147,483,647', 2147483647],
+            ['-2,147,483,648', -2147483647 - 1],
+            ['2,147,483,648', false, '->parse() TYPE_INT32 returns false when the number is greater than the integer positive range.'],
+            ['-2,147,483,649', false, '->parse() TYPE_INT32 returns false when the number is greater than the integer negative range.'],
+        ];
     }
 
     public function testParseTypeInt64With32BitIntegerInPhp32Bit()
@@ -822,12 +822,12 @@ public function testParseTypeDouble($value, $expectedValue)
 
     public function parseTypeDoubleProvider()
     {
-        return array(
-            array('1', (float) 1),
-            array('1.1', 1.1),
-            array('9,223,372,036,854,775,808', 9223372036854775808),
-            array('-9,223,372,036,854,775,809', -9223372036854775809),
-        );
+        return [
+            ['1', (float) 1],
+            ['1.1', 1.1],
+            ['9,223,372,036,854,775,808', 9223372036854775808],
+            ['-9,223,372,036,854,775,809', -9223372036854775809],
+        ];
     }
 
     public function testParseTypeCurrency()
diff --git a/src/Symfony/Component/Intl/Tests/Util/IcuVersionTest.php b/src/Symfony/Component/Intl/Tests/Util/IcuVersionTest.php
index 2fe7a0e4587b..b037c33231ab 100644
--- a/src/Symfony/Component/Intl/Tests/Util/IcuVersionTest.php
+++ b/src/Symfony/Component/Intl/Tests/Util/IcuVersionTest.php
@@ -21,24 +21,24 @@ class IcuVersionTest extends TestCase
 {
     public function normalizeProvider()
     {
-        return array(
-            array(null, '1', '10'),
-            array(null, '1.2', '12'),
-            array(null, '1.2.3', '12.3'),
-            array(null, '1.2.3.4', '12.3.4'),
-            array(1, '1', '10'),
-            array(1, '1.2', '12'),
-            array(1, '1.2.3', '12'),
-            array(1, '1.2.3.4', '12'),
-            array(2, '1', '10'),
-            array(2, '1.2', '12'),
-            array(2, '1.2.3', '12.3'),
-            array(2, '1.2.3.4', '12.3'),
-            array(3, '1', '10'),
-            array(3, '1.2', '12'),
-            array(3, '1.2.3', '12.3'),
-            array(3, '1.2.3.4', '12.3.4'),
-        );
+        return [
+            [null, '1', '10'],
+            [null, '1.2', '12'],
+            [null, '1.2.3', '12.3'],
+            [null, '1.2.3.4', '12.3.4'],
+            [1, '1', '10'],
+            [1, '1.2', '12'],
+            [1, '1.2.3', '12'],
+            [1, '1.2.3.4', '12'],
+            [2, '1', '10'],
+            [2, '1.2', '12'],
+            [2, '1.2.3', '12.3'],
+            [2, '1.2.3.4', '12.3'],
+            [3, '1', '10'],
+            [3, '1.2', '12'],
+            [3, '1.2.3', '12.3'],
+            [3, '1.2.3.4', '12.3.4'],
+        ];
     }
 
     /**
@@ -51,55 +51,55 @@ public function testNormalize($precision, $version, $result)
 
     public function compareProvider()
     {
-        return array(
-            array(null, '1', '==', '1', true),
-            array(null, '1.0', '==', '1.1', false),
-            array(null, '1.0.0', '==', '1.0.1', false),
-            array(null, '1.0.0.0', '==', '1.0.0.1', false),
-            array(null, '1.0.0.0.0', '==', '1.0.0.0.1', false),
+        return [
+            [null, '1', '==', '1', true],
+            [null, '1.0', '==', '1.1', false],
+            [null, '1.0.0', '==', '1.0.1', false],
+            [null, '1.0.0.0', '==', '1.0.0.1', false],
+            [null, '1.0.0.0.0', '==', '1.0.0.0.1', false],
 
-            array(null, '1', '==', '10', true),
-            array(null, '1.0', '==', '11', false),
-            array(null, '1.0.0', '==', '10.1', false),
-            array(null, '1.0.0.0', '==', '10.0.1', false),
-            array(null, '1.0.0.0.0', '==', '10.0.0.1', false),
+            [null, '1', '==', '10', true],
+            [null, '1.0', '==', '11', false],
+            [null, '1.0.0', '==', '10.1', false],
+            [null, '1.0.0.0', '==', '10.0.1', false],
+            [null, '1.0.0.0.0', '==', '10.0.0.1', false],
 
-            array(1, '1', '==', '1', true),
-            array(1, '1.0', '==', '1.1', false),
-            array(1, '1.0.0', '==', '1.0.1', true),
-            array(1, '1.0.0.0', '==', '1.0.0.1', true),
-            array(1, '1.0.0.0.0', '==', '1.0.0.0.1', true),
+            [1, '1', '==', '1', true],
+            [1, '1.0', '==', '1.1', false],
+            [1, '1.0.0', '==', '1.0.1', true],
+            [1, '1.0.0.0', '==', '1.0.0.1', true],
+            [1, '1.0.0.0.0', '==', '1.0.0.0.1', true],
 
-            array(1, '1', '==', '10', true),
-            array(1, '1.0', '==', '11', false),
-            array(1, '1.0.0', '==', '10.1', true),
-            array(1, '1.0.0.0', '==', '10.0.1', true),
-            array(1, '1.0.0.0.0', '==', '10.0.0.1', true),
+            [1, '1', '==', '10', true],
+            [1, '1.0', '==', '11', false],
+            [1, '1.0.0', '==', '10.1', true],
+            [1, '1.0.0.0', '==', '10.0.1', true],
+            [1, '1.0.0.0.0', '==', '10.0.0.1', true],
 
-            array(2, '1', '==', '1', true),
-            array(2, '1.0', '==', '1.1', false),
-            array(2, '1.0.0', '==', '1.0.1', false),
-            array(2, '1.0.0.0', '==', '1.0.0.1', true),
-            array(2, '1.0.0.0.0', '==', '1.0.0.0.1', true),
+            [2, '1', '==', '1', true],
+            [2, '1.0', '==', '1.1', false],
+            [2, '1.0.0', '==', '1.0.1', false],
+            [2, '1.0.0.0', '==', '1.0.0.1', true],
+            [2, '1.0.0.0.0', '==', '1.0.0.0.1', true],
 
-            array(2, '1', '==', '10', true),
-            array(2, '1.0', '==', '11', false),
-            array(2, '1.0.0', '==', '10.1', false),
-            array(2, '1.0.0.0', '==', '10.0.1', true),
-            array(2, '1.0.0.0.0', '==', '10.0.0.1', true),
+            [2, '1', '==', '10', true],
+            [2, '1.0', '==', '11', false],
+            [2, '1.0.0', '==', '10.1', false],
+            [2, '1.0.0.0', '==', '10.0.1', true],
+            [2, '1.0.0.0.0', '==', '10.0.0.1', true],
 
-            array(3, '1', '==', '1', true),
-            array(3, '1.0', '==', '1.1', false),
-            array(3, '1.0.0', '==', '1.0.1', false),
-            array(3, '1.0.0.0', '==', '1.0.0.1', false),
-            array(3, '1.0.0.0.0', '==', '1.0.0.0.1', true),
+            [3, '1', '==', '1', true],
+            [3, '1.0', '==', '1.1', false],
+            [3, '1.0.0', '==', '1.0.1', false],
+            [3, '1.0.0.0', '==', '1.0.0.1', false],
+            [3, '1.0.0.0.0', '==', '1.0.0.0.1', true],
 
-            array(3, '1', '==', '10', true),
-            array(3, '1.0', '==', '11', false),
-            array(3, '1.0.0', '==', '10.1', false),
-            array(3, '1.0.0.0', '==', '10.0.1', false),
-            array(3, '1.0.0.0.0', '==', '10.0.0.1', true),
-        );
+            [3, '1', '==', '10', true],
+            [3, '1.0', '==', '11', false],
+            [3, '1.0.0', '==', '10.1', false],
+            [3, '1.0.0.0', '==', '10.0.1', false],
+            [3, '1.0.0.0.0', '==', '10.0.0.1', true],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Intl/Tests/Util/VersionTest.php b/src/Symfony/Component/Intl/Tests/Util/VersionTest.php
index b570b3ae96ae..e3bb07ee5a80 100644
--- a/src/Symfony/Component/Intl/Tests/Util/VersionTest.php
+++ b/src/Symfony/Component/Intl/Tests/Util/VersionTest.php
@@ -21,28 +21,28 @@ class VersionTest extends TestCase
 {
     public function normalizeProvider()
     {
-        return array(
-            array(null, '1', '1'),
-            array(null, '1.2', '1.2'),
-            array(null, '1.2.3', '1.2.3'),
-            array(null, '1.2.3.4', '1.2.3.4'),
-            array(1, '1', '1'),
-            array(1, '1.2', '1'),
-            array(1, '1.2.3', '1'),
-            array(1, '1.2.3.4', '1'),
-            array(2, '1', '1'),
-            array(2, '1.2', '1.2'),
-            array(2, '1.2.3', '1.2'),
-            array(2, '1.2.3.4', '1.2'),
-            array(3, '1', '1'),
-            array(3, '1.2', '1.2'),
-            array(3, '1.2.3', '1.2.3'),
-            array(3, '1.2.3.4', '1.2.3'),
-            array(4, '1', '1'),
-            array(4, '1.2', '1.2'),
-            array(4, '1.2.3', '1.2.3'),
-            array(4, '1.2.3.4', '1.2.3.4'),
-        );
+        return [
+            [null, '1', '1'],
+            [null, '1.2', '1.2'],
+            [null, '1.2.3', '1.2.3'],
+            [null, '1.2.3.4', '1.2.3.4'],
+            [1, '1', '1'],
+            [1, '1.2', '1'],
+            [1, '1.2.3', '1'],
+            [1, '1.2.3.4', '1'],
+            [2, '1', '1'],
+            [2, '1.2', '1.2'],
+            [2, '1.2.3', '1.2'],
+            [2, '1.2.3.4', '1.2'],
+            [3, '1', '1'],
+            [3, '1.2', '1.2'],
+            [3, '1.2.3', '1.2.3'],
+            [3, '1.2.3.4', '1.2.3'],
+            [4, '1', '1'],
+            [4, '1.2', '1.2'],
+            [4, '1.2.3', '1.2.3'],
+            [4, '1.2.3.4', '1.2.3.4'],
+        ];
     }
 
     /**
@@ -55,27 +55,27 @@ public function testNormalize($precision, $version, $result)
 
     public function compareProvider()
     {
-        return array(
-            array(null, '1', '==', '1', true),
-            array(null, '1.0', '==', '1.1', false),
-            array(null, '1.0.0', '==', '1.0.1', false),
-            array(null, '1.0.0.0', '==', '1.0.0.1', false),
+        return [
+            [null, '1', '==', '1', true],
+            [null, '1.0', '==', '1.1', false],
+            [null, '1.0.0', '==', '1.0.1', false],
+            [null, '1.0.0.0', '==', '1.0.0.1', false],
 
-            array(1, '1', '==', '1', true),
-            array(1, '1.0', '==', '1.1', true),
-            array(1, '1.0.0', '==', '1.0.1', true),
-            array(1, '1.0.0.0', '==', '1.0.0.1', true),
+            [1, '1', '==', '1', true],
+            [1, '1.0', '==', '1.1', true],
+            [1, '1.0.0', '==', '1.0.1', true],
+            [1, '1.0.0.0', '==', '1.0.0.1', true],
 
-            array(2, '1', '==', '1', true),
-            array(2, '1.0', '==', '1.1', false),
-            array(2, '1.0.0', '==', '1.0.1', true),
-            array(2, '1.0.0.0', '==', '1.0.0.1', true),
+            [2, '1', '==', '1', true],
+            [2, '1.0', '==', '1.1', false],
+            [2, '1.0.0', '==', '1.0.1', true],
+            [2, '1.0.0.0', '==', '1.0.0.1', true],
 
-            array(3, '1', '==', '1', true),
-            array(3, '1.0', '==', '1.1', false),
-            array(3, '1.0.0', '==', '1.0.1', false),
-            array(3, '1.0.0.0', '==', '1.0.0.1', true),
-        );
+            [3, '1', '==', '1', true],
+            [3, '1.0', '==', '1.1', false],
+            [3, '1.0.0', '==', '1.0.1', false],
+            [3, '1.0.0.0', '==', '1.0.0.1', true],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Ldap/Adapter/AbstractConnection.php b/src/Symfony/Component/Ldap/Adapter/AbstractConnection.php
index 67529b62e53b..a43e2535d203 100644
--- a/src/Symfony/Component/Ldap/Adapter/AbstractConnection.php
+++ b/src/Symfony/Component/Ldap/Adapter/AbstractConnection.php
@@ -21,7 +21,7 @@ abstract class AbstractConnection implements ConnectionInterface
 {
     protected $config;
 
-    public function __construct(array $config = array())
+    public function __construct(array $config = [])
     {
         $resolver = new OptionsResolver();
 
@@ -37,13 +37,13 @@ public function __construct(array $config = array())
      */
     protected function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'host' => 'localhost',
             'version' => 3,
             'connection_string' => null,
             'encryption' => 'none',
-            'options' => array(),
-        ));
+            'options' => [],
+        ]);
 
         $resolver->setDefault('port', function (Options $options) {
             return 'ssl' === $options['encryption'] ? 636 : 389;
@@ -57,7 +57,7 @@ protected function configureOptions(OptionsResolver $resolver)
         $resolver->setAllowedTypes('port', 'numeric');
         $resolver->setAllowedTypes('connection_string', 'string');
         $resolver->setAllowedTypes('version', 'numeric');
-        $resolver->setAllowedValues('encryption', array('none', 'ssl', 'tls'));
+        $resolver->setAllowedValues('encryption', ['none', 'ssl', 'tls']);
         $resolver->setAllowedTypes('options', 'array');
     }
 }
diff --git a/src/Symfony/Component/Ldap/Adapter/AbstractQuery.php b/src/Symfony/Component/Ldap/Adapter/AbstractQuery.php
index d2c39d734f0e..e07431c90650 100644
--- a/src/Symfony/Component/Ldap/Adapter/AbstractQuery.php
+++ b/src/Symfony/Component/Ldap/Adapter/AbstractQuery.php
@@ -24,10 +24,10 @@ abstract class AbstractQuery implements QueryInterface
     protected $query;
     protected $options;
 
-    public function __construct(ConnectionInterface $connection, $dn, $query, array $options = array())
+    public function __construct(ConnectionInterface $connection, $dn, $query, array $options = [])
     {
         $resolver = new OptionsResolver();
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'filter' => '*',
             'maxItems' => 0,
             'sizeLimit' => 0,
@@ -35,12 +35,12 @@ public function __construct(ConnectionInterface $connection, $dn, $query, array
             'deref' => static::DEREF_NEVER,
             'attrsOnly' => 0,
             'scope' => static::SCOPE_SUB,
-        ));
-        $resolver->setAllowedValues('deref', array(static::DEREF_ALWAYS, static::DEREF_NEVER, static::DEREF_FINDING, static::DEREF_SEARCHING));
-        $resolver->setAllowedValues('scope', array(static::SCOPE_BASE, static::SCOPE_ONE, static::SCOPE_SUB));
+        ]);
+        $resolver->setAllowedValues('deref', [static::DEREF_ALWAYS, static::DEREF_NEVER, static::DEREF_FINDING, static::DEREF_SEARCHING]);
+        $resolver->setAllowedValues('scope', [static::SCOPE_BASE, static::SCOPE_ONE, static::SCOPE_SUB]);
 
         $resolver->setNormalizer('filter', function (Options $options, $value) {
-            return \is_array($value) ? $value : array($value);
+            return \is_array($value) ? $value : [$value];
         });
 
         $this->connection = $connection;
diff --git a/src/Symfony/Component/Ldap/Adapter/AdapterInterface.php b/src/Symfony/Component/Ldap/Adapter/AdapterInterface.php
index f01e3528f8e1..3c2fb4b9710c 100644
--- a/src/Symfony/Component/Ldap/Adapter/AdapterInterface.php
+++ b/src/Symfony/Component/Ldap/Adapter/AdapterInterface.php
@@ -32,7 +32,7 @@ public function getConnection();
      *
      * @return QueryInterface
      */
-    public function createQuery($dn, $query, array $options = array());
+    public function createQuery($dn, $query, array $options = []);
 
     /**
      * Fetches the entry manager instance.
diff --git a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Adapter.php b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Adapter.php
index fbc41af36bfe..0700f6ec5877 100644
--- a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Adapter.php
+++ b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Adapter.php
@@ -23,7 +23,7 @@ class Adapter implements AdapterInterface
     private $connection;
     private $entryManager;
 
-    public function __construct(array $config = array())
+    public function __construct(array $config = [])
     {
         if (!\extension_loaded('ldap')) {
             throw new LdapException('The LDAP PHP extension is not enabled.');
@@ -59,7 +59,7 @@ public function getEntryManager()
     /**
      * {@inheritdoc}
      */
-    public function createQuery($dn, $query, array $options = array())
+    public function createQuery($dn, $query, array $options = [])
     {
         return new Query($this->getConnection(), $dn, $query, $options);
     }
diff --git a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Collection.php b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Collection.php
index 581cf153ed65..fade430753dc 100644
--- a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Collection.php
+++ b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Collection.php
@@ -121,10 +121,10 @@ private function getSingleEntry($con, $current)
 
     private function cleanupAttributes(array $entry)
     {
-        $attributes = array_diff_key($entry, array_flip(range(0, $entry['count'] - 1)) + array(
+        $attributes = array_diff_key($entry, array_flip(range(0, $entry['count'] - 1)) + [
                 'count' => null,
                 'dn' => null,
-            ));
+            ]);
         array_walk($attributes, function (&$value) {
             unset($value['count']);
         });
diff --git a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Query.php b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Query.php
index 09cb42c7d38e..33742039fb32 100644
--- a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Query.php
+++ b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Query.php
@@ -27,7 +27,7 @@ class Query extends AbstractQuery
     /** @var resource */
     private $search;
 
-    public function __construct(Connection $connection, $dn, $query, array $options = array())
+    public function __construct(Connection $connection, $dn, $query, array $options = [])
     {
         parent::__construct($connection, $dn, $query, $options);
     }
diff --git a/src/Symfony/Component/Ldap/Entry.php b/src/Symfony/Component/Ldap/Entry.php
index 1d69b2bedca3..f79c1bba71ae 100644
--- a/src/Symfony/Component/Ldap/Entry.php
+++ b/src/Symfony/Component/Ldap/Entry.php
@@ -19,7 +19,7 @@ class Entry
     private $dn;
     private $attributes;
 
-    public function __construct($dn, array $attributes = array())
+    public function __construct($dn, array $attributes = [])
     {
         $this->dn = $dn;
         $this->attributes = $attributes;
diff --git a/src/Symfony/Component/Ldap/Ldap.php b/src/Symfony/Component/Ldap/Ldap.php
index 514f51d22c21..dda47b5376bb 100644
--- a/src/Symfony/Component/Ldap/Ldap.php
+++ b/src/Symfony/Component/Ldap/Ldap.php
@@ -21,9 +21,9 @@ final class Ldap implements LdapInterface
 {
     private $adapter;
 
-    private static $adapterMap = array(
+    private static $adapterMap = [
         'ext_ldap' => 'Symfony\Component\Ldap\Adapter\ExtLdap\Adapter',
-    );
+    ];
 
     public function __construct(AdapterInterface $adapter)
     {
@@ -41,7 +41,7 @@ public function bind($dn = null, $password = null)
     /**
      * {@inheritdoc}
      */
-    public function query($dn, $query, array $options = array())
+    public function query($dn, $query, array $options = [])
     {
         return $this->adapter->createQuery($dn, $query, $options);
     }
@@ -70,7 +70,7 @@ public function escape($subject, $ignore = '', $flags = 0)
      *
      * @return static
      */
-    public static function create($adapter, array $config = array())
+    public static function create($adapter, array $config = [])
     {
         if (!isset(self::$adapterMap[$adapter])) {
             throw new DriverNotFoundException(sprintf(
diff --git a/src/Symfony/Component/Ldap/LdapClient.php b/src/Symfony/Component/Ldap/LdapClient.php
index 2287d2ddb211..42175d8534c9 100644
--- a/src/Symfony/Component/Ldap/LdapClient.php
+++ b/src/Symfony/Component/Ldap/LdapClient.php
@@ -42,7 +42,7 @@ public function bind($dn = null, $password = null)
     /**
      * {@inheritdoc}
      */
-    public function query($dn, $query, array $options = array())
+    public function query($dn, $query, array $options = [])
     {
         return $this->ldap->query($dn, $query, $options);
     }
@@ -62,19 +62,19 @@ public function find($dn, $query, $filter = '*')
     {
         @trigger_error('The "find" method is deprecated since Symfony 3.1 and will be removed in 4.0. Use the "query" method instead.', E_USER_DEPRECATED);
 
-        $query = $this->ldap->query($dn, $query, array('filter' => $filter));
+        $query = $this->ldap->query($dn, $query, ['filter' => $filter]);
         $entries = $query->execute();
-        $result = array(
+        $result = [
             'count' => 0,
-        );
+        ];
 
         foreach ($entries as $entry) {
-            $resultEntry = array();
+            $resultEntry = [];
 
             foreach ($entry->getAttributes() as $attribute => $values) {
-                $resultAttribute = array(
+                $resultAttribute = [
                     'count' => \count($values),
-                );
+                ];
 
                 foreach ($values as $val) {
                     $resultAttribute[] = $val;
@@ -114,14 +114,14 @@ private function normalizeConfig($host, $port, $version, $useSsl, $useStartTls,
             $encryption = 'none';
         }
 
-        return array(
+        return [
             'host' => $host,
             'port' => $port,
             'encryption' => $encryption,
-            'options' => array(
+            'options' => [
                 'protocol_version' => $version,
                 'referrals' => (bool) $optReferrals,
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Ldap/LdapInterface.php b/src/Symfony/Component/Ldap/LdapInterface.php
index 9f24276d61a2..aa6b233f3d4d 100644
--- a/src/Symfony/Component/Ldap/LdapInterface.php
+++ b/src/Symfony/Component/Ldap/LdapInterface.php
@@ -44,7 +44,7 @@ public function bind($dn = null, $password = null);
      *
      * @return QueryInterface
      */
-    public function query($dn, $query, array $options = array());
+    public function query($dn, $query, array $options = []);
 
     /**
      * @return EntryManagerInterface
diff --git a/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/AdapterTest.php b/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/AdapterTest.php
index f23836187942..18d1c02d488e 100644
--- a/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/AdapterTest.php
+++ b/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/AdapterTest.php
@@ -38,7 +38,7 @@ public function testLdapQuery()
         $ldap = new Adapter($this->getLdapConfig());
 
         $ldap->getConnection()->bind('cn=admin,dc=symfony,dc=com', 'symfony');
-        $query = $ldap->createQuery('dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))', array());
+        $query = $ldap->createQuery('dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))', []);
         $result = $query->execute();
 
         $this->assertInstanceOf(Collection::class, $result);
@@ -46,8 +46,8 @@ public function testLdapQuery()
 
         $entry = $result[0];
         $this->assertInstanceOf(Entry::class, $entry);
-        $this->assertEquals(array('Fabien Potencier'), $entry->getAttribute('cn'));
-        $this->assertEquals(array('fabpot@symfony.com', 'fabien@potencier.com'), $entry->getAttribute('mail'));
+        $this->assertEquals(['Fabien Potencier'], $entry->getAttribute('cn'));
+        $this->assertEquals(['fabpot@symfony.com', 'fabien@potencier.com'], $entry->getAttribute('mail'));
     }
 
     /**
@@ -58,14 +58,14 @@ public function testLdapQueryIterator()
         $ldap = new Adapter($this->getLdapConfig());
 
         $ldap->getConnection()->bind('cn=admin,dc=symfony,dc=com', 'symfony');
-        $query = $ldap->createQuery('dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))', array());
+        $query = $ldap->createQuery('dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))', []);
         $result = $query->execute();
         $iterator = $result->getIterator();
         $iterator->rewind();
         $entry = $iterator->current();
         $this->assertInstanceOf(Entry::class, $entry);
-        $this->assertEquals(array('Fabien Potencier'), $entry->getAttribute('cn'));
-        $this->assertEquals(array('fabpot@symfony.com', 'fabien@potencier.com'), $entry->getAttribute('mail'));
+        $this->assertEquals(['Fabien Potencier'], $entry->getAttribute('cn'));
+        $this->assertEquals(['fabpot@symfony.com', 'fabien@potencier.com'], $entry->getAttribute('mail'));
     }
 
     /**
@@ -75,7 +75,7 @@ public function testLdapQueryWithoutBind()
     {
         $ldap = new Adapter($this->getLdapConfig());
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}(NotBoundException::class);
-        $query = $ldap->createQuery('dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))', array());
+        $query = $ldap->createQuery('dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))', []);
         $query->execute();
     }
 
@@ -85,14 +85,14 @@ public function testLdapQueryScopeBase()
 
         $ldap->getConnection()->bind('cn=admin,dc=symfony,dc=com', 'symfony');
 
-        $query = $ldap->createQuery('cn=Fabien Potencier,dc=symfony,dc=com', '(objectclass=*)', array(
+        $query = $ldap->createQuery('cn=Fabien Potencier,dc=symfony,dc=com', '(objectclass=*)', [
            'scope' => Query::SCOPE_BASE,
-        ));
+        ]);
         $result = $query->execute();
 
         $entry = $result[0];
         $this->assertEquals($result->count(), 1);
-        $this->assertEquals(array('Fabien Potencier'), $entry->getAttribute('cn'));
+        $this->assertEquals(['Fabien Potencier'], $entry->getAttribute('cn'));
     }
 
     public function testLdapQueryScopeOneLevel()
@@ -101,14 +101,14 @@ public function testLdapQueryScopeOneLevel()
 
         $ldap->getConnection()->bind('cn=admin,dc=symfony,dc=com', 'symfony');
 
-        $one_level_result = $ldap->createQuery('ou=Components,dc=symfony,dc=com', '(objectclass=*)', array(
+        $one_level_result = $ldap->createQuery('ou=Components,dc=symfony,dc=com', '(objectclass=*)', [
             'scope' => Query::SCOPE_ONE,
-        ))->execute();
+        ])->execute();
 
         $subtree_count = $ldap->createQuery('ou=Components,dc=symfony,dc=com', '(objectclass=*)')->execute()->count();
 
         $this->assertNotEquals($one_level_result->count(), $subtree_count);
         $this->assertEquals($one_level_result->count(), 1);
-        $this->assertEquals($one_level_result[0]->getAttribute('ou'), array('Ldap'));
+        $this->assertEquals($one_level_result[0]->getAttribute('ou'), ['Ldap']);
     }
 }
diff --git a/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php b/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
index 855a5750fbb8..d9ff58fe8f5b 100644
--- a/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
+++ b/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
@@ -38,12 +38,12 @@ public function testLdapAddAndRemove()
     {
         $this->executeSearchQuery(1);
 
-        $entry = new Entry('cn=Charles Sarrazin,dc=symfony,dc=com', array(
-            'sn' => array('csarrazi'),
-            'objectclass' => array(
+        $entry = new Entry('cn=Charles Sarrazin,dc=symfony,dc=com', [
+            'sn' => ['csarrazi'],
+            'objectclass' => [
                 'inetOrgPerson',
-            ),
-        ));
+            ],
+        ]);
 
         $em = $this->adapter->getEntryManager();
         $em->add($entry);
@@ -63,11 +63,11 @@ public function testLdapAddInvalidEntry()
         $this->executeSearchQuery(1);
 
         // The entry is missing a subject name
-        $entry = new Entry('cn=Charles Sarrazin,dc=symfony,dc=com', array(
-            'objectclass' => array(
+        $entry = new Entry('cn=Charles Sarrazin,dc=symfony,dc=com', [
+            'objectclass' => [
                 'inetOrgPerson',
-            ),
-        ));
+            ],
+        ]);
 
         $em = $this->adapter->getEntryManager();
         $em->add($entry);
diff --git a/src/Symfony/Component/Ldap/Tests/LdapClientTest.php b/src/Symfony/Component/Ldap/Tests/LdapClientTest.php
index 34d727f8cc3c..63b3379d25e1 100644
--- a/src/Symfony/Component/Ldap/Tests/LdapClientTest.php
+++ b/src/Symfony/Component/Ldap/Tests/LdapClientTest.php
@@ -59,9 +59,9 @@ public function testLdapQuery()
         $this->ldap
             ->expects($this->once())
             ->method('query')
-            ->with('foo', 'bar', array('baz'))
+            ->with('foo', 'bar', ['baz'])
         ;
-        $this->client->query('foo', 'bar', array('baz'));
+        $this->client->query('foo', 'bar', ['baz']);
     }
 
     public function testLdapFind()
@@ -70,18 +70,18 @@ public function testLdapFind()
         $collection
             ->expects($this->once())
             ->method('getIterator')
-            ->will($this->returnValue(new \ArrayIterator(array(
-                new Entry('cn=qux,dc=foo,dc=com', array(
-                    'cn' => array('qux'),
-                    'dc' => array('com', 'foo'),
-                    'givenName' => array('Qux'),
-                )),
-                new Entry('cn=baz,dc=foo,dc=com', array(
-                    'cn' => array('baz'),
-                    'dc' => array('com', 'foo'),
-                    'givenName' => array('Baz'),
-                )),
-            ))))
+            ->will($this->returnValue(new \ArrayIterator([
+                new Entry('cn=qux,dc=foo,dc=com', [
+                    'cn' => ['qux'],
+                    'dc' => ['com', 'foo'],
+                    'givenName' => ['Qux'],
+                ]),
+                new Entry('cn=baz,dc=foo,dc=com', [
+                    'cn' => ['baz'],
+                    'dc' => ['com', 'foo'],
+                    'givenName' => ['Baz'],
+                ]),
+            ])))
         ;
         $query = $this->getMockBuilder(QueryInterface::class)->getMock();
         $query
@@ -92,53 +92,53 @@ public function testLdapFind()
         $this->ldap
             ->expects($this->once())
             ->method('query')
-            ->with('dc=foo,dc=com', 'bar', array('filter' => 'baz'))
+            ->with('dc=foo,dc=com', 'bar', ['filter' => 'baz'])
             ->willReturn($query)
         ;
 
-        $expected = array(
+        $expected = [
             'count' => 2,
-            0 => array(
+            0 => [
                 'count' => 3,
                 0 => 'cn',
-                'cn' => array(
+                'cn' => [
                     'count' => 1,
                     0 => 'qux',
-                ),
+                ],
                 1 => 'dc',
-                'dc' => array(
+                'dc' => [
                     'count' => 2,
                     0 => 'com',
                     1 => 'foo',
-                ),
+                ],
                 2 => 'givenname',
-                'givenname' => array(
+                'givenname' => [
                     'count' => 1,
                     0 => 'Qux',
-                ),
+                ],
                 'dn' => 'cn=qux,dc=foo,dc=com',
-            ),
-            1 => array(
+            ],
+            1 => [
                 'count' => 3,
                 0 => 'cn',
-                'cn' => array(
+                'cn' => [
                     'count' => 1,
                     0 => 'baz',
-                ),
+                ],
                 1 => 'dc',
-                'dc' => array(
+                'dc' => [
                     'count' => 2,
                     0 => 'com',
                     1 => 'foo',
-                ),
+                ],
                 2 => 'givenname',
-                'givenname' => array(
+                'givenname' => [
                     'count' => 1,
                     0 => 'Baz',
-                ),
+                ],
                 'dn' => 'cn=baz,dc=foo,dc=com',
-            ),
-        );
+            ],
+        ];
         $this->assertEquals($expected, $this->client->find('dc=foo,dc=com', 'bar', 'baz'));
     }
 
@@ -151,7 +151,7 @@ public function testLdapClientConfig($args, $expected)
         $reflMethod = $reflObj->getMethod('normalizeConfig');
         $reflMethod->setAccessible(true);
         array_unshift($args, $this->client);
-        $this->assertEquals($expected, \call_user_func_array(array($reflMethod, 'invoke'), $args));
+        $this->assertEquals($expected, \call_user_func_array([$reflMethod, 'invoke'], $args));
     }
 
     /**
@@ -167,7 +167,7 @@ public function testLdapClientFunctional()
 
         $con = @ldap_connect($config['host'], $config['port']);
         @ldap_bind($con, 'cn=admin,dc=symfony,dc=com', 'symfony');
-        $search = @ldap_search($con, 'dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))', array('*'));
+        $search = @ldap_search($con, 'dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))', ['*']);
         $expected = @ldap_get_entries($con, $search);
 
         $this->assertSame($expected, $result);
@@ -175,55 +175,55 @@ public function testLdapClientFunctional()
 
     public function provideConfig()
     {
-        return array(
-            array(
-                array('localhost', 389, 3, true, false, false),
-                array(
+        return [
+            [
+                ['localhost', 389, 3, true, false, false],
+                [
                     'host' => 'localhost',
                     'port' => 389,
                     'encryption' => 'ssl',
-                    'options' => array(
+                    'options' => [
                         'protocol_version' => 3,
                         'referrals' => false,
-                    ),
-                ),
-            ),
-            array(
-                array('localhost', 389, 3, false, true, false),
-                array(
+                    ],
+                ],
+            ],
+            [
+                ['localhost', 389, 3, false, true, false],
+                [
                     'host' => 'localhost',
                     'port' => 389,
                     'encryption' => 'tls',
-                    'options' => array(
+                    'options' => [
                         'protocol_version' => 3,
                         'referrals' => false,
-                    ),
-                ),
-            ),
-            array(
-                array('localhost', 389, 3, false, false, false),
-                array(
+                    ],
+                ],
+            ],
+            [
+                ['localhost', 389, 3, false, false, false],
+                [
                     'host' => 'localhost',
                     'port' => 389,
                     'encryption' => 'none',
-                    'options' => array(
+                    'options' => [
                         'protocol_version' => 3,
                         'referrals' => false,
-                    ),
-                ),
-            ),
-            array(
-                array('localhost', 389, 3, false, false, false),
-                array(
+                    ],
+                ],
+            ],
+            [
+                ['localhost', 389, 3, false, false, false],
+                [
                     'host' => 'localhost',
                     'port' => 389,
                     'encryption' => 'none',
-                    'options' => array(
+                    'options' => [
                         'protocol_version' => 3,
                         'referrals' => false,
-                    ),
-                ),
-            ),
-        );
+                    ],
+                ],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Ldap/Tests/LdapTest.php b/src/Symfony/Component/Ldap/Tests/LdapTest.php
index 17184323f41c..acc845222587 100644
--- a/src/Symfony/Component/Ldap/Tests/LdapTest.php
+++ b/src/Symfony/Component/Ldap/Tests/LdapTest.php
@@ -62,9 +62,9 @@ public function testLdapQuery()
         $this->adapter
             ->expects($this->once())
             ->method('createQuery')
-            ->with('foo', 'bar', array('baz'))
+            ->with('foo', 'bar', ['baz'])
         ;
-        $this->ldap->query('foo', 'bar', array('baz'));
+        $this->ldap->query('foo', 'bar', ['baz']);
     }
 
     /**
diff --git a/src/Symfony/Component/Ldap/Tests/LdapTestCase.php b/src/Symfony/Component/Ldap/Tests/LdapTestCase.php
index 33afd6d22d38..2e5fa9a34b18 100644
--- a/src/Symfony/Component/Ldap/Tests/LdapTestCase.php
+++ b/src/Symfony/Component/Ldap/Tests/LdapTestCase.php
@@ -8,9 +8,9 @@ class LdapTestCase extends TestCase
 {
     protected function getLdapConfig()
     {
-        return array(
+        return [
             'host' => getenv('LDAP_HOST'),
             'port' => getenv('LDAP_PORT'),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Lock/Key.php b/src/Symfony/Component/Lock/Key.php
index 8be4f3a25597..a7403301d83a 100644
--- a/src/Symfony/Component/Lock/Key.php
+++ b/src/Symfony/Component/Lock/Key.php
@@ -20,7 +20,7 @@ final class Key
 {
     private $resource;
     private $expiringTime;
-    private $state = array();
+    private $state = [];
 
     /**
      * @param string $resource
diff --git a/src/Symfony/Component/Lock/Lock.php b/src/Symfony/Component/Lock/Lock.php
index 9cd15dd40bbe..1a6c0e26ee0c 100644
--- a/src/Symfony/Component/Lock/Lock.php
+++ b/src/Symfony/Component/Lock/Lock.php
@@ -76,7 +76,7 @@ public function acquire($blocking = false)
             }
 
             $this->dirty = true;
-            $this->logger->info('Successfully acquired the "{resource}" lock.', array('resource' => $this->key));
+            $this->logger->info('Successfully acquired the "{resource}" lock.', ['resource' => $this->key]);
 
             if ($this->ttl) {
                 $this->refresh();
@@ -89,7 +89,7 @@ public function acquire($blocking = false)
             return true;
         } catch (LockConflictedException $e) {
             $this->dirty = false;
-            $this->logger->notice('Failed to acquire the "{resource}" lock. Someone else already acquired the lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to acquire the "{resource}" lock. Someone else already acquired the lock.', ['resource' => $this->key]);
 
             if ($blocking) {
                 throw $e;
@@ -97,7 +97,7 @@ public function acquire($blocking = false)
 
             return false;
         } catch (\Exception $e) {
-            $this->logger->notice('Failed to acquire the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
+            $this->logger->notice('Failed to acquire the "{resource}" lock.', ['resource' => $this->key, 'exception' => $e]);
             throw new LockAcquiringException(sprintf('Failed to acquire the "%s" lock.', $this->key), 0, $e);
         }
     }
@@ -120,13 +120,13 @@ public function refresh()
                 throw new LockExpiredException(sprintf('Failed to put off the expiration of the "%s" lock within the specified time.', $this->key));
             }
 
-            $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', array('resource' => $this->key, 'ttl' => $this->ttl));
+            $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', ['resource' => $this->key, 'ttl' => $this->ttl]);
         } catch (LockConflictedException $e) {
             $this->dirty = false;
-            $this->logger->notice('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', ['resource' => $this->key]);
             throw $e;
         } catch (\Exception $e) {
-            $this->logger->notice('Failed to define an expiration for the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
+            $this->logger->notice('Failed to define an expiration for the "{resource}" lock.', ['resource' => $this->key, 'exception' => $e]);
             throw new LockAcquiringException(sprintf('Failed to define an expiration for the "%s" lock.', $this->key), 0, $e);
         }
     }
@@ -148,7 +148,7 @@ public function release()
         $this->dirty = false;
 
         if ($this->store->exists($this->key)) {
-            $this->logger->notice('Failed to release the "{resource}" lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to release the "{resource}" lock.', ['resource' => $this->key]);
             throw new LockReleasingException(sprintf('Failed to release the "%s" lock.', $this->key));
         }
     }
diff --git a/src/Symfony/Component/Lock/Store/CombinedStore.php b/src/Symfony/Component/Lock/Store/CombinedStore.php
index b0ca2c1454e0..38f3f35e750e 100644
--- a/src/Symfony/Component/Lock/Store/CombinedStore.php
+++ b/src/Symfony/Component/Lock/Store/CombinedStore.php
@@ -69,7 +69,7 @@ public function save(Key $key)
                 $store->save($key);
                 ++$successCount;
             } catch (\Exception $e) {
-                $this->logger->warning('One store failed to save the "{resource}" lock.', array('resource' => $key, 'store' => $store, 'exception' => $e));
+                $this->logger->warning('One store failed to save the "{resource}" lock.', ['resource' => $key, 'store' => $store, 'exception' => $e]);
                 ++$failureCount;
             }
 
@@ -82,7 +82,7 @@ public function save(Key $key)
             return;
         }
 
-        $this->logger->warning('Failed to store the "{resource}" lock. Quorum has not been met.', array('resource' => $key, 'success' => $successCount, 'failure' => $failureCount));
+        $this->logger->warning('Failed to store the "{resource}" lock. Quorum has not been met.', ['resource' => $key, 'success' => $successCount, 'failure' => $failureCount]);
 
         // clean up potential locks
         $this->delete($key);
@@ -108,7 +108,7 @@ public function putOffExpiration(Key $key, $ttl)
         foreach ($this->stores as $store) {
             try {
                 if (0.0 >= $adjustedTtl = $expireAt - microtime(true)) {
-                    $this->logger->warning('Stores took to long to put off the expiration of the "{resource}" lock.', array('resource' => $key, 'store' => $store, 'ttl' => $ttl));
+                    $this->logger->warning('Stores took to long to put off the expiration of the "{resource}" lock.', ['resource' => $key, 'store' => $store, 'ttl' => $ttl]);
                     $key->reduceLifetime(0);
                     break;
                 }
@@ -116,7 +116,7 @@ public function putOffExpiration(Key $key, $ttl)
                 $store->putOffExpiration($key, $adjustedTtl);
                 ++$successCount;
             } catch (\Exception $e) {
-                $this->logger->warning('One store failed to put off the expiration of the "{resource}" lock.', array('resource' => $key, 'store' => $store, 'exception' => $e));
+                $this->logger->warning('One store failed to put off the expiration of the "{resource}" lock.', ['resource' => $key, 'store' => $store, 'exception' => $e]);
                 ++$failureCount;
             }
 
@@ -133,7 +133,7 @@ public function putOffExpiration(Key $key, $ttl)
             return;
         }
 
-        $this->logger->warning('Failed to define the expiration for the "{resource}" lock. Quorum has not been met.', array('resource' => $key, 'success' => $successCount, 'failure' => $failureCount));
+        $this->logger->warning('Failed to define the expiration for the "{resource}" lock. Quorum has not been met.', ['resource' => $key, 'success' => $successCount, 'failure' => $failureCount]);
 
         // clean up potential locks
         $this->delete($key);
@@ -150,7 +150,7 @@ public function delete(Key $key)
             try {
                 $store->delete($key);
             } catch (\Exception $e) {
-                $this->logger->notice('One store failed to delete the "{resource}" lock.', array('resource' => $key, 'store' => $store, 'exception' => $e));
+                $this->logger->notice('One store failed to delete the "{resource}" lock.', ['resource' => $key, 'store' => $store, 'exception' => $e]);
             }
         }
     }
diff --git a/src/Symfony/Component/Lock/Store/MemcachedStore.php b/src/Symfony/Component/Lock/Store/MemcachedStore.php
index 455dfebcfb75..9b795504c990 100644
--- a/src/Symfony/Component/Lock/Store/MemcachedStore.php
+++ b/src/Symfony/Component/Lock/Store/MemcachedStore.php
@@ -173,15 +173,15 @@ private function getValueAndCas(Key $key)
10000

         if ($this->useExtendedReturn) {
             $extendedReturn = $this->memcached->get((string) $key, null, \Memcached::GET_EXTENDED);
             if (\Memcached::GET_ERROR_RETURN_VALUE === $extendedReturn) {
-                return array($extendedReturn, 0.0);
+                return [$extendedReturn, 0.0];
             }
 
-            return array($extendedReturn['value'], $extendedReturn['cas']);
+            return [$extendedReturn['value'], $extendedReturn['cas']];
         }
 
         $cas = 0.0;
         $value = $this->memcached->get((string) $key, null, $cas);
 
-        return array($value, $cas);
+        return [$value, $cas];
     }
 }
diff --git a/src/Symfony/Component/Lock/Store/RedisStore.php b/src/Symfony/Component/Lock/Store/RedisStore.php
index e3b150053237..2d7ba4536678 100644
--- a/src/Symfony/Component/Lock/Store/RedisStore.php
+++ b/src/Symfony/Component/Lock/Store/RedisStore.php
@@ -62,7 +62,7 @@ public function save(Key $key)
         ';
 
         $key->reduceLifetime($this->initialTtl);
-        if (!$this->evaluate($script, (string) $key, array($this->getToken($key), (int) ceil($this->initialTtl * 1000)))) {
+        if (!$this->evaluate($script, (string) $key, [$this->getToken($key), (int) ceil($this->initialTtl * 1000)])) {
             throw new LockConflictedException();
         }
 
@@ -90,7 +90,7 @@ public function putOffExpiration(Key $key, $ttl)
         ';
 
         $key->reduceLifetime($ttl);
-        if (!$this->evaluate($script, (string) $key, array($this->getToken($key), (int) ceil($ttl * 1000)))) {
+        if (!$this->evaluate($script, (string) $key, [$this->getToken($key), (int) ceil($ttl * 1000)])) {
             throw new LockConflictedException();
         }
 
@@ -112,7 +112,7 @@ public function delete(Key $key)
             end
         ';
 
-        $this->evaluate($script, (string) $key, array($this->getToken($key)));
+        $this->evaluate($script, (string) $key, [$this->getToken($key)]);
     }
 
     /**
@@ -135,15 +135,15 @@ public function exists(Key $key)
     private function evaluate($script, $resource, array $args)
     {
         if ($this->redis instanceof \Redis || $this->redis instanceof \RedisCluster || $this->redis instanceof RedisProxy) {
-            return $this->redis->eval($script, array_merge(array($resource), $args), 1);
+            return $this->redis->eval($script, array_merge([$resource], $args), 1);
         }
 
         if ($this->redis instanceof \RedisArray) {
-            return $this->redis->_instance($this->redis->_target($resource))->eval($script, array_merge(array($resource), $args), 1);
+            return $this->redis->_instance($this->redis->_target($resource))->eval($script, array_merge([$resource], $args), 1);
         }
 
         if ($this->redis instanceof \Predis\Client) {
-            return \call_user_func_array(array($this->redis, 'eval'), array_merge(array($script, 1, $resource), $args));
+            return \call_user_func_array([$this->redis, 'eval'], array_merge([$script, 1, $resource], $args));
         }
 
         throw new InvalidArgumentException(sprintf('%s() expects being initialized with a Redis, RedisArray, RedisCluster or Predis\Client, %s given', __METHOD__, \is_object($this->redis) ? \get_class($this->redis) : \gettype($this->redis)));
diff --git a/src/Symfony/Component/Lock/Store/RetryTillSaveStore.php b/src/Symfony/Component/Lock/Store/RetryTillSaveStore.php
index dfc3b266687d..1ee988eadda2 100644
--- a/src/Symfony/Component/Lock/Store/RetryTillSaveStore.php
+++ b/src/Symfony/Component/Lock/Store/RetryTillSaveStore.php
@@ -71,7 +71,7 @@ public function waitAndSave(Key $key)
             }
         } while (++$retry < $this->retryCount);
 
-        $this->logger->warning('Failed to store the "{resource}" lock. Abort after {retry} retry.', array('resource' => $key, 'retry' => $retry));
+        $this->logger->warning('Failed to store the "{resource}" lock. Abort after {retry} retry.', ['resource' => $key, 'retry' => $retry]);
 
         throw new LockConflictedException();
     }
diff --git a/src/Symfony/Component/Lock/Tests/LockTest.php b/src/Symfony/Component/Lock/Tests/LockTest.php
index 7913644b9a79..f461311db0ed 100644
--- a/src/Symfony/Component/Lock/Tests/LockTest.php
+++ b/src/Symfony/Component/Lock/Tests/LockTest.php
@@ -140,7 +140,7 @@ public function testReleaseOnDestruction()
 
         $store
             ->method('exists')
-            ->willReturnOnConsecutiveCalls(array(true, false))
+            ->willReturnOnConsecutiveCalls([true, false])
         ;
         $store
             ->expects($this->once())
@@ -159,7 +159,7 @@ public function testNoAutoReleaseWhenNotConfigured()
 
         $store
             ->method('exists')
-            ->willReturnOnConsecutiveCalls(array(true, false))
+            ->willReturnOnConsecutiveCalls([true, false])
         ;
         $store
             ->expects($this->never())
@@ -206,7 +206,7 @@ public function testReleaseThrowsAndLog()
 
         $logger->expects($this->atLeastOnce())
             ->method('notice')
-            ->with('Failed to release the "{resource}" lock.', array('resource' => $key));
+            ->with('Failed to release the "{resource}" lock.', ['resource' => $key]);
 
         $store
             ->expects($this->once())
@@ -243,12 +243,12 @@ public function testExpiration($ttls, $expected)
 
     public function provideExpiredDates()
     {
-        yield array(array(-0.1), true);
-        yield array(array(0.1, -0.1), true);
-        yield array(array(-0.1, 0.1), true);
+        yield [[-0.1], true];
+        yield [[0.1, -0.1], true];
+        yield [[-0.1, 0.1], true];
 
-        yield array(array(), false);
-        yield array(array(0.1), false);
-        yield array(array(-0.1, null), false);
+        yield [[], false];
+        yield [[0.1], false];
+        yield [[-0.1, null], false];
     }
 }
diff --git a/src/Symfony/Component/Lock/Tests/Store/BlockingStoreTestTrait.php b/src/Symfony/Component/Lock/Tests/Store/BlockingStoreTestTrait.php
index 67ac4e103646..3fafcb98e4bf 100644
--- a/src/Symfony/Component/Lock/Tests/Store/BlockingStoreTestTrait.php
+++ b/src/Symfony/Component/Lock/Tests/Store/BlockingStoreTestTrait.php
@@ -51,11 +51,11 @@ public function testBlockingLocks()
         $parentPID = posix_getpid();
 
         // Block SIGHUP signal
-        pcntl_sigprocmask(SIG_BLOCK, array(SIGHUP));
+        pcntl_sigprocmask(SIG_BLOCK, [SIGHUP]);
 
         if ($childPID = pcntl_fork()) {
             // Wait the start of the child
-            pcntl_sigwaitinfo(array(SIGHUP), $info);
+            pcntl_sigwaitinfo([SIGHUP], $info);
 
             try {
                 // This call should failed given the lock should already by acquired by the child
@@ -77,14 +77,14 @@ public function testBlockingLocks()
             $this->assertSame(0, pcntl_wexitstatus($status1), 'The child process couldn\'t lock the resource');
         } else {
             // Block SIGHUP signal
-            pcntl_sigprocmask(SIG_BLOCK, array(SIGHUP));
+            pcntl_sigprocmask(SIG_BLOCK, [SIGHUP]);
             try {
                 $store->save($key);
                 // send the ready signal to the parent
                 posix_kill($parentPID, SIGHUP);
 
                 // Wait for the parent to be ready
-                pcntl_sigwaitinfo(array(SIGHUP), $info);
+                pcntl_sigwaitinfo([SIGHUP], $info);
 
                 // Wait ClockDelay to let parent assert to finish
                 usleep($clockDelay);
diff --git a/src/Symfony/Component/Lock/Tests/Store/CombinedStoreTest.php b/src/Symfony/Component/Lock/Tests/Store/CombinedStoreTest.php
index f2c55b056b32..bcfc40b1bc26 100644
--- a/src/Symfony/Component/Lock/Tests/Store/CombinedStoreTest.php
+++ b/src/Symfony/Component/Lock/Tests/Store/CombinedStoreTest.php
@@ -46,7 +46,7 @@ public function getStore()
             self::markTestSkipped($e->getMessage());
         }
 
-        return new CombinedStore(array(new RedisStore($redis)), new UnanimousStrategy());
+        return new CombinedStore([new RedisStore($redis)], new UnanimousStrategy());
     }
 
     /** @var \PHPUnit_Framework_MockObject_MockObject */
@@ -64,7 +64,7 @@ protected function setUp()
         $this->store1 = $this->getMockBuilder(StoreInterface::class)->getMock();
         $this->store2 = $this->getMockBuilder(StoreInterface::class)->getMock();
 
-        $this->store = new CombinedStore(array($this->store1, $this->store2), $this->strategy);
+        $this->store = new CombinedStore([$this->store1, $this->store2], $this->strategy);
     }
 
     /**
@@ -269,7 +269,7 @@ public function testPutOffExpirationIgnoreNonExpiringStorage()
         $store1 = $this->getMockBuilder(StoreInterface::class)->getMock();
         $store2 = $this->getMockBuilder(StoreInterface::class)->getMock();
 
-        $store = new CombinedStore(array($store1, $store2), $this->strategy);
+        $store = new CombinedStore([$store1, $store2], $this->strategy);
 
         $key = new Key(uniqid(__METHOD__, true));
         $ttl = random_int(1, 10);
diff --git a/src/Symfony/Component/Lock/Tests/Store/RedisArrayStoreTest.php b/src/Symfony/Component/Lock/Tests/Store/RedisArrayStoreTest.php
index 180da4618da0..7d915615a7a5 100644
--- a/src/Symfony/Component/Lock/Tests/Store/RedisArrayStoreTest.php
+++ b/src/Symfony/Component/Lock/Tests/Store/RedisArrayStoreTest.php
@@ -31,7 +31,7 @@ public static function setupBeforeClass()
 
     protected function getRedisConnection()
     {
-        $redis = new \RedisArray(array(getenv('REDIS_HOST')));
+        $redis = new \RedisArray([getenv('REDIS_HOST')]);
 
         return $redis;
     }
diff --git a/src/Symfony/Component/Lock/Tests/Strategy/ConsensusStrategyTest.php b/src/Symfony/Component/Lock/Tests/Strategy/ConsensusStrategyTest.php
index b8c09dfb31fa..8034cfe7cf90 100644
--- a/src/Symfony/Component/Lock/Tests/Strategy/ConsensusStrategyTest.php
+++ b/src/Symfony/Component/Lock/Tests/Strategy/ConsensusStrategyTest.php
@@ -30,45 +30,45 @@ protected function setUp()
     public function provideMetResults()
     {
         // success, failure, total, isMet
-        yield array(3, 0, 3, true);
-        yield array(2, 1, 3, true);
-        yield array(2, 0, 3, true);
-        yield array(1, 2, 3, false);
-        yield array(1, 1, 3, false);
-        yield array(1, 0, 3, false);
-        yield array(0, 3, 3, false);
-        yield array(0, 2, 3, false);
-        yield array(0, 1, 3, false);
-        yield array(0, 0, 3, false);
+        yield [3, 0, 3, true];
+        yield [2, 1, 3, true];
+        yield [2, 0, 3, true];
+        yield [1, 2, 3, false];
+        yield [1, 1, 3, false];
+        yield [1, 0, 3, false];
+        yield [0, 3, 3, false];
+        yield [0, 2, 3, false];
+        yield [0, 1, 3, false];
+        yield [0, 0, 3, false];
 
-        yield array(2, 0, 2, true);
-        yield array(1, 1, 2, false);
-        yield array(1, 0, 2, false);
-        yield array(0, 2, 2, false);
-        yield array(0, 1, 2, false);
-        yield array(0, 0, 2, false);
+        yield [2, 0, 2, true];
+        yield [1, 1, 2, false];
+        yield [1, 0, 2, false];
+        yield [0, 2, 2, false];
+        yield [0, 1, 2, false];
+        yield [0, 0, 2, false];
     }
 
     public function provideIndeterminate()
     {
         // success, failure, total, canBeMet
-        yield array(3, 0, 3, true);
-        yield array(2, 1, 3, true);
-        yield array(2, 0, 3, true);
-        yield array(1, 2, 3, false);
-        yield array(1, 1, 3, true);
-        yield array(1, 0, 3, true);
-        yield array(0, 3, 3, false);
-        yield array(0, 2, 3, false);
-        yield array(0, 1, 3, true);
-        yield array(0, 0, 3, true);
+        yield [3, 0, 3, true];
+        yield [2, 1, 3, true];
+        yield [2, 0, 3, true];
+        yield [1, 2, 3, false];
+        yield [1, 1, 3, true];
+        yield [1, 0, 3, true];
+        yield [0, 3, 3, false];
+        yield [0, 2, 3, false];
+        yield [0, 1, 3, true];
+        yield [0, 0, 3, true];
 
-        yield array(2, 0, 2, true);
-        yield array(1, 1, 2, false);
-        yield array(1, 0, 2, true);
-        yield array(0, 2, 2, false);
-        yield array(0, 1, 2, false);
-        yield array(0, 0, 2, true);
+        yield [2, 0, 2, true];
+        yield [1, 1, 2, false];
+        yield [1, 0, 2, true];
+        yield [0, 2, 2, false];
+        yield [0, 1, 2, false];
+        yield [0, 0, 2, true];
     }
 
     /**
diff --git a/src/Symfony/Component/Lock/Tests/Strategy/UnanimousStrategyTest.php b/src/Symfony/Component/Lock/Tests/Strategy/UnanimousStrategyTest.php
index 4e63e6b4e2cd..a07b42ddf52f 100644
--- a/src/Symfony/Component/Lock/Tests/Strategy/UnanimousStrategyTest.php
+++ b/src/Symfony/Component/Lock/Tests/Strategy/UnanimousStrategyTest.php
@@ -30,45 +30,45 @@ protected function setUp()
     public function provideMetResults()
     {
         // success, failure, total, isMet
-        yield array(3, 0, 3, true);
-        yield array(2, 1, 3, false);
-        yield array(2, 0, 3, false);
-        yield array(1, 2, 3, false);
-        yield array(1, 1, 3, false);
-        yield array(1, 0, 3, false);
-        yield array(0, 3, 3, false);
-        yield array(0, 2, 3, false);
-        yield array(0, 1, 3, false);
-        yield array(0, 0, 3, false);
+        yield [3, 0, 3, true];
+        yield [2, 1, 3, false];
+        yield [2, 0, 3, false];
+        yield [1, 2, 3, false];
+        yield [1, 1, 3, false];
+        yield [1, 0, 3, false];
+        yield [0, 3, 3, false];
+        yield [0, 2, 3, false];
+        yield [0, 1, 3, false];
+        yield [0, 0, 3, false];
 
-        yield array(2, 0, 2, true);
-        yield array(1, 1, 2, false);
-        yield array(1, 0, 2, false);
-        yield array(0, 2, 2, false);
-        yield array(0, 1, 2, false);
-        yield array(0, 0, 2, false);
+        yield [2, 0, 2, true];
+        yield [1, 1, 2, false];
+        yield [1, 0, 2, false];
+        yield [0, 2, 2, false];
+        yield [0, 1, 2, false];
+        yield [0, 0, 2, false];
     }
 
     public function provideIndeterminate()
     {
         // success, failure, total, canBeMet
-        yield array(3, 0, 3, true);
-        yield array(2, 1, 3, false);
-        yield array(2, 0, 3, true);
-        yield array(1, 2, 3, false);
-        yield array(1, 1, 3, false);
-        yield array(1, 0, 3, true);
-        yield array(0, 3, 3, false);
-        yield array(0, 2, 3, false);
-        yield array(0, 1, 3, false);
-        yield array(0, 0, 3, true);
+        yield [3, 0, 3, true];
+        yield [2, 1, 3, false];
+        yield [2, 0, 3, true];
+        yield [1, 2, 3, false];
+        yield [1, 1, 3, false];
+        yield [1, 0, 3, true];
+        yield [0, 3, 3, false];
+        yield [0, 2, 3, false];
+        yield [0, 1, 3, false];
+        yield [0, 0, 3, true];
 
-        yield array(2, 0, 2, true);
-        yield array(1, 1, 2, false);
-        yield array(1, 0, 2, true);
-        yield array(0, 2, 2, false);
-        yield array(0, 1, 2, false);
-        yield array(0, 0, 2, true);
+        yield [2, 0, 2, true];
+        yield [1, 1, 2, false];
+        yield [1, 0, 2, true];
+        yield [0, 2, 2, false];
+        yield [0, 1, 2, false];
+        yield [0, 0, 2, true];
     }
 
     /**
diff --git a/src/Symfony/Component/OptionsResolver/OptionsResolver.php b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
index 83d81969cb01..82efa15e3e23 100644
--- a/src/Symfony/Component/OptionsResolver/OptionsResolver.php
+++ b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
@@ -29,51 +29,51 @@ class OptionsResolver implements Options
     /**
      * The names of all defined options.
      */
-    private $defined = array();
+    private $defined = [];
 
     /**
      * The default option values.
      */
-    private $defaults = array();
+    private $defaults = [];
 
     /**
      * The names of required options.
      */
-    private $required = array();
+    private $required = [];
 
     /**
      * The resolved option values.
      */
-    private $resolved = array();
+    private $resolved = [];
 
     /**
      * A list of normalizer closures.
      *
      * @var \Closure[]
      */
-    private $normalizers = array();
+    private $normalizers = [];
 
     /**
      * A list of accepted values for each option.
      */
-    private $allowedValues = array();
+    private $allowedValues = [];
 
     /**
      * A list of accepted types for each option.
      */
-    private $allowedTypes = array();
+    private $allowedTypes = [];
 
     /**
      * A list of closures for evaluating lazy options.
      */
-    private $lazy = array();
+    private $lazy = [];
 
     /**
      * A list of lazy options whose closure is currently being called.
      *
      * This list helps detecting circular dependencies between lazy options.
      */
-    private $calling = array();
+    private $calling = [];
 
     /**
      * Whether the instance is locked for reading.
@@ -85,11 +85,11 @@ class OptionsResolver implements Options
      */
     private $locked = false;
 
-    private static $typeAliases = array(
+    private static $typeAliases = [
         'boolean' => 'bool',
         'integer' => 'int',
         'double' => 'float',
-    );
+    ];
 
     /**
      * Sets the default value of a given option.
@@ -154,7 +154,7 @@ public function setDefault($option, $value)
 
                 // Ignore previous lazy options if the closure has no second parameter
                 if (!isset($this->lazy[$option]) || !isset($params[1])) {
-                    $this->lazy[$option] = array();
+                    $this->lazy[$option] = [];
                 }
 
                 // Store closure for later evaluation
@@ -423,7 +423,7 @@ public function setAllowedValues($option, $allowedValues)
             throw new UndefinedOptionsException(sprintf('The option "%s" does not exist. Defined options are: "%s".', $option, implode('", "', array_keys($this->defined))));
         }
 
-        $this->allowedValues[$option] = \is_array($allowedValues) ? $allowedValues : array($allowedValues);
+        $this->allowedValues[$option] = \is_array($allowedValues) ? $allowedValues : [$allowedValues];
 
         // Make sure the option is processed
         unset($this->resolved[$option]);
@@ -465,7 +465,7 @@ public function addAllowedValues($option, $allowedValues)
         }
 
         if (!\is_array($allowedValues)) {
-            $allowedValues = array($allowedValues);
+            $allowedValues = [$allowedValues];
         }
 
         if (!isset($this->allowedValues[$option])) {
@@ -590,14 +590,14 @@ public function clear()
             throw new AccessException('Options cannot be cleared from a lazy option or normalizer.');
         }
 
-        $this->defined = array();
-        $this->defaults = array();
-        $this->required = array();
-        $this->resolved = array();
-        $this->lazy = array();
-        $this->normalizers = array();
-        $this->allowedTypes = array();
-        $this->allowedValues = array();
+        $this->defined = [];
+        $this->defaults = [];
+        $this->required = [];
+        $this->resolved = [];
+        $this->lazy = [];
+        $this->normalizers = [];
+        $this->allowedTypes = [];
+        $this->allowedValues = [];
 
         return $this;
     }
@@ -626,7 +626,7 @@ public function clear()
      * @throws NoSuchOptionException     If a lazy option reads an unavailable option
      * @throws AccessException           If called from a lazy option or normalizer
      */
-    public function resolve(array $options = array())
+    public function resolve(array $options = [])
     {
         if ($this->locked) {
             throw new AccessException('Options cannot be resolved from a lazy option or normalizer.');
@@ -735,7 +735,7 @@ public function offsetGet($option)
         // Validate the type of the resolved option
         if (isset($this->allowedTypes[$option])) {
             $valid = false;
-            $invalidTypes = array();
+            $invalidTypes = [];
 
             foreach ($this->allowedTypes[$option] as $type) {
                 $type = isset(self::$typeAliases[$type]) ? self::$typeAliases[$type] : $type;
@@ -759,7 +759,7 @@ public function offsetGet($option)
         // Validate the value of the resolved option
         if (isset($this->allowedValues[$option])) {
             $success = false;
-            $printableAllowedValues = array();
+            $printableAllowedValues = [];
 
             foreach ($this->allowedValues[$option] as $allowedValue) {
                 if ($allowedValue instanceof \Closure) {
@@ -981,7 +981,7 @@ private function formatTypeOf($value, $type)
             }
 
             if (\is_array($value)) {
-                $subTypes = array();
+                $subTypes = [];
                 foreach ($value as $val) {
                     $subTypes[$this->formatTypeOf($val, null)] = true;
                 }
diff --git a/src/Symfony/Component/OptionsResolver/Tests/Debug/OptionsResolverIntrospectorTest.php b/src/Symfony/Component/OptionsResolver/Tests/Debug/OptionsResolverIntrospectorTest.php
index 7c4753ab5f6b..8dd7997ddf78 100644
--- a/src/Symfony/Component/OptionsResolver/Tests/Debug/OptionsResolverIntrospectorTest.php
+++ b/src/Symfony/Component/OptionsResolver/Tests/Debug/OptionsResolverIntrospectorTest.php
@@ -64,7 +64,7 @@ public function testGetDefaultThrowsOnNotDefinedOption()
     public function testGetLazyClosures()
     {
         $resolver = new OptionsResolver();
-        $closures = array();
+        $closures = [];
         $resolver->setDefault($option = 'foo', $closures[] = function (Options $options) {});
 
         $debug = new OptionsResolverIntrospector($resolver);
@@ -100,7 +100,7 @@ public function testGetAllowedTypes()
     {
         $resolver = new OptionsResolver();
         $resolver->setDefined($option = 'foo');
-        $resolver->setAllowedTypes($option = 'foo', $allowedTypes = array('string', 'bool'));
+        $resolver->setAllowedTypes($option = 'foo', $allowedTypes = ['string', 'bool']);
 
         $debug = new OptionsResolverIntrospector($resolver);
         $this->assertSame($allowedTypes, $debug->getAllowedTypes($option));
@@ -135,7 +135,7 @@ public function testGetAllowedValues()
     {
         $resolver = new OptionsResolver();
         $resolver->setDefined($option = 'foo');
-        $resolver->setAllowedValues($option = 'foo', $allowedValues = array('bar', 'baz'));
+        $resolver->setAllowedValues($option = 'foo', $allowedValues = ['bar', 'baz']);
 
         $debug = new OptionsResolverIntrospector($resolver);
         $this->assertSame($allowedValues, $debug->getAllowedValues($option));
diff --git a/src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php b/src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php
index 449a53f6eb5e..abf0aa0155d2 100644
--- a/src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php
+++ b/src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php
@@ -38,7 +38,7 @@ public function testResolveFailsIfNonExistingOption()
         $this->resolver->setDefault('z', '1');
         $this->resolver->setDefault('a', '2');
 
-        $this->resolver->resolve(array('foo' => 'bar'));
+        $this->resolver->resolve(['foo' => 'bar']);
     }
 
     /**
@@ -50,7 +50,7 @@ public function testResolveFailsIfMultipleNonExistingOptions()
         $this->resolver->setDefault('z', '1');
         $this->resolver->setDefault('a', '2');
 
-        $this->resolver->resolve(array('ping' => 'pong', 'foo' => 'bar', 'baz' => 'bam'));
+        $this->resolver->resolve(['ping' => 'pong', 'foo' => 'bar', 'baz' => 'bam']);
     }
 
     /**
@@ -59,7 +59,7 @@ public function testResolveFailsIfMultipleNonExistingOptions()
     public function testResolveFailsFromLazyOption()
     {
         $this->resolver->setDefault('foo', function (Options $options) {
-            $options->resolve(array());
+            $options->resolve([]);
         });
 
         $this->resolver->resolve();
@@ -75,10 +75,10 @@ public function testSetDefault()
         $this->resolver->setDefault('one', '1');
         $this->resolver->setDefault('two', '20');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'one' => '1',
             'two' => '20',
-        ), $this->resolver->resolve());
+        ], $this->resolver->resolve());
     }
 
     /**
@@ -118,7 +118,7 @@ public function testSetLazyClosure()
             return 'lazy';
         });
 
-        $this->assertEquals(array('foo' => 'lazy'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'lazy'], $this->resolver->resolve());
     }
 
     public function testClosureWithoutTypeHintNotInvoked()
@@ -129,7 +129,7 @@ public function testClosureWithoutTypeHintNotInvoked()
 
         $this->resolver->setDefault('foo', $closure);
 
-        $this->assertSame(array('foo' => $closure), $this->resolver->resolve());
+        $this->assertSame(['foo' => $closure], $this->resolver->resolve());
     }
 
     public function testClosureWithoutParametersNotInvoked()
@@ -140,7 +140,7 @@ public function testClosureWithoutParametersNotInvoked()
 
         $this->resolver->setDefault('foo', $closure);
 
-        $this->assertSame(array('foo' => $closure), $this->resolver->resolve());
+        $this->assertSame(['foo' => $closure], $this->resolver->resolve());
     }
 
     public function testAccessPreviousDefaultValue()
@@ -155,7 +155,7 @@ public function testAccessPreviousDefaultValue()
             return 'lazy';
         });
 
-        $this->assertEquals(array('foo' => 'lazy'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'lazy'], $this->resolver->resolve());
     }
 
     public function testAccessPreviousLazyDefaultValue()
@@ -172,7 +172,7 @@ public function testAccessPreviousLazyDefaultValue()
             return 'lazy';
         });
 
-        $this->assertEquals(array('foo' => 'lazy'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'lazy'], $this->resolver->resolve());
     }
 
     public function testPreviousValueIsNotEvaluatedIfNoSecondArgument()
@@ -187,7 +187,7 @@ public function testPreviousValueIsNotEvaluatedIfNoSecondArgument()
             return 'lazy';
         });
 
-        $this->assertEquals(array('foo' => 'lazy'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'lazy'], $this->resolver->resolve());
     }
 
     public function testOverwrittenLazyOptionNotEvaluated()
@@ -198,7 +198,7 @@ public function testOverwrittenLazyOptionNotEvaluated()
 
         $this->resolver->setDefault('foo', 'bar');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testInvokeEachLazyOptionOnlyOnce()
@@ -259,7 +259,7 @@ public function testResolveSucceedsIfRequiredOptionPassed()
     {
         $this->resolver->setRequired('foo');
 
-        $this->assertNotEmpty($this->resolver->resolve(array('foo' => 'bar')));
+        $this->assertNotEmpty($this->resolver->resolve(['foo' => 'bar']));
     }
 
     public function testIsRequired()
@@ -307,11 +307,11 @@ public function testIsNotRequiredAfterClear()
 
     public function testGetRequiredOptions()
     {
-        $this->resolver->setRequired(array('foo', 'bar'));
+        $this->resolver->setRequired(['foo', 'bar']);
         $this->resolver->setDefault('bam', 'baz');
         $this->resolver->setDefault('foo', 'boo');
 
-        $this->assertSame(array('foo', 'bar'), $this->resolver->getRequiredOptions());
+        $this->assertSame(['foo', 'bar'], $this->resolver->getRequiredOptions());
     }
 
     public function testIsMissingIfNotSet()
@@ -346,11 +346,11 @@ public function testIsNotMissingAfterClear()
 
     public function testGetMissingOptions()
     {
-        $this->resolver->setRequired(array('foo', 'bar'));
+        $this->resolver->setRequired(['foo', 'bar']);
         $this->resolver->setDefault('bam', 'baz');
         $this->resolver->setDefault('foo', 'boo');
 
-        $this->assertSame(array('bar'), $this->resolver->getMissingOptions());
+        $this->assertSame(['bar'], $this->resolver->getMissingOptions());
     }
 
     /**
@@ -369,7 +369,7 @@ public function testDefinedOptionsNotIncludedInResolvedOptions()
     {
         $this->resolver->setDefined('foo');
 
-        $this->assertSame(array(), $this->resolver->resolve());
+        $this->assertSame([], $this->resolver->resolve());
     }
 
     public function testDefinedOptionsIncludedIfDefaultSetBefore()
@@ -377,7 +377,7 @@ public function testDefinedOptionsIncludedIfDefaultSetBefore()
         $this->resolver->setDefault('foo', 'bar');
         $this->resolver->setDefined('foo');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testDefinedOptionsIncludedIfDefaultSetAfter()
@@ -385,14 +385,14 @@ public function testDefinedOptionsIncludedIfDefaultSetAfter()
         $this->resolver->setDefined('foo');
         $this->resolver->setDefault('foo', 'bar');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testDefinedOptionsIncludedIfPassedToResolve()
     {
         $this->resolver->setDefined('foo');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve(array('foo' => 'bar')));
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve(['foo' => 'bar']));
     }
 
     public function testIsDefined()
@@ -425,11 +425,11 @@ public function testSetOptionsAreDefined()
 
     public function testGetDefinedOptions()
     {
-        $this->resolver->setDefined(array('foo', 'bar'));
+        $this->resolver->setDefined(['foo', 'bar']);
         $this->resolver->setDefault('baz', 'bam');
         $this->resolver->setRequired('boo');
 
-        $this->assertSame(array('foo', 'bar', 'baz', 'boo'), $this->resolver->getDefinedOptions());
+        $this->assertSame(['foo', 'bar', 'baz', 'boo'], $this->resolver->getDefinedOptions());
     }
 
     public function testRemovedOptionsAreNotDefined()
@@ -462,9 +462,9 @@ public function testResolveTypedArray()
     {
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'string[]');
-        $options = $this->resolver->resolve(array('foo' => array('bar', 'baz')));
+        $options = $this->resolver->resolve(['foo' => ['bar', 'baz']]);
 
-        $this->assertSame(array('foo' => array('bar', 'baz')), $options);
+        $this->assertSame(['foo' => ['bar', 'baz']], $options);
     }
 
     /**
@@ -490,7 +490,7 @@ public function testResolveFailsIfInvalidTypedArray()
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'int[]');
 
-        $this->resolver->resolve(array('foo' => array(new \DateTime())));
+        $this->resolver->resolve(['foo' => [new \DateTime()]]);
     }
 
     /**
@@ -502,7 +502,7 @@ public function testResolveFailsWithNonArray()
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'int[]');
 
-        $this->resolver->resolve(array('foo' => 'bar'));
+        $this->resolver->resolve(['foo' => 'bar']);
     }
 
     /**
@@ -515,11 +515,11 @@ public function testResolveFailsIfTypedArrayContainsInvalidTypes()
         $this->resolver->setAllowedTypes('foo', 'int[]');
         $values = range(1, 5);
         $values[] = new \stdClass();
-        $values[] = array();
+        $values[] = [];
         $values[] = new \DateTime();
         $values[] = 123;
 
-        $this->resolver->resolve(array('foo' => $values));
+        $this->resolver->resolve(['foo' => $values]);
     }
 
     /**
@@ -532,11 +532,11 @@ public function testResolveFailsWithCorrectLevelsButWrongScalar()
         $this->resolver->setAllowedTypes('foo', 'int[][]');
 
         $this->resolver->resolve(
-            array(
-                'foo' => array(
-                    array(1.2),
-                ),
-            )
+            [
+                'foo' => [
+                    [1.2],
+                ],
+            ]
         );
     }
 
@@ -555,21 +555,21 @@ public function testResolveFailsIfInvalidType($actualType, $allowedType, $except
             $this->setExpectedException('Symfony\Component\OptionsResolver\Exception\InvalidOptionsException', $exceptionMessage);
         }
 
-        $this->resolver->resolve(array('option' => $actualType));
+        $this->resolver->resolve(['option' => $actualType]);
     }
 
     public function provideInvalidTypes()
     {
-        return array(
-            array(true, 'string', 'The option "option" with value true is expected to be of type "string", but is of type "boolean".'),
-            array(false, 'string', 'The option "option" with value false is expected to be of type "string", but is of type "boolean".'),
-            array(fopen(__FILE__, 'r'), 'string', 'The option "option" with value resource is expected to be of type "string", but is of type "resource".'),
-            array(array(), 'string', 'The option "option" with value array is expected to be of type "string", but is of type "array".'),
-            array(new OptionsResolver(), 'string', 'The option "option" with value Symfony\Component\OptionsResolver\OptionsResolver is expected to be of type "string", but is of type "Symfony\Component\OptionsResolver\OptionsResolver".'),
-            array(42, 'string', 'The option "option" with value 42 is expected to be of type "string", but is of type "integer".'),
-            array(null, 'string', 'The option "option" with value null is expected to be of type "string", but is of type "NULL".'),
-            array('bar', '\stdClass', 'The option "option" with value "bar" is expected to be of type "\stdClass", but is of type "string".'),
-        );
+        return [
+            [true, 'string', 'The option "option" with value true is expected to be of type "string", but is of type "boolean".'],
+            [false, 'string', 'The option "option" with value false is expected to be of type "string", but is of type "boolean".'],
+            [fopen(__FILE__, 'r'), 'string', 'The option "option" with value resource is expected to be of type "string", but is of type "resource".'],
+            [[], 'string', 'The option "option" with value array is expected to be of type "string", but is of type "array".'],
+            [new OptionsResolver(), 'string', 'The option "option" with value Symfony\Component\OptionsResolver\OptionsResolver is expected to be of type "string", but is of type "Symfony\Component\OptionsResolver\OptionsResolver".'],
+            [42, 'string', 'The option "option" with value 42 is expected to be of type "string", but is of type "integer".'],
+            [null, 'string', 'The option "option" with value null is expected to be of type "string", but is of type "NULL".'],
+            ['bar', '\stdClass', 'The option "option" with value "bar" is expected to be of type "\stdClass", but is of type "string".'],
+        ];
     }
 
     public function testResolveSucceedsIfValidType()
@@ -587,7 +587,7 @@ public function testResolveSucceedsIfValidType()
     public function testResolveFailsIfInvalidTypeMultiple()
     {
         $this->resolver->setDefault('foo', 42);
-        $this->resolver->setAllowedTypes('foo', array('string', 'bool'));
+        $this->resolver->setAllowedTypes('foo', ['string', 'bool']);
 
         $this->resolver->resolve();
     }
@@ -595,7 +595,7 @@ public function testResolveFailsIfInvalidTypeMultiple()
     public function testResolveSucceedsIfValidTypeMultiple()
     {
         $this->resolver->setDefault('foo', true);
-        $this->resolver->setAllowedTypes('foo', array('string', 'bool'));
+        $this->resolver->setAllowedTypes('foo', ['string', 'bool']);
 
         $this->assertNotEmpty($this->resolver->resolve());
     }
@@ -611,14 +611,14 @@ public function testResolveSucceedsIfInstanceOfClass()
     public function testResolveSucceedsIfTypedArray()
     {
         $this->resolver->setDefault('foo', null);
-        $this->resolver->setAllowedTypes('foo', array('null', 'DateTime[]'));
+        $this->resolver->setAllowedTypes('foo', ['null', 'DateTime[]']);
 
-        $data = array(
-            'foo' => array(
+        $data = [
+            'foo' => [
                 new \DateTime(),
                 new \DateTime(),
-            ),
-        );
+            ],
+        ];
         $result = $this->resolver->resolve($data);
         $this->assertEquals($data, $result);
     }
@@ -681,7 +681,7 @@ public function testResolveSucceedsIfValidAddedType()
     public function testResolveFailsIfInvalidAddedTypeMultiple()
     {
         $this->resolver->setDefault('foo', 42);
-        $this->resolver->addAllowedTypes('foo', array('string', 'bool'));
+        $this->resolver->addAllowedTypes('foo', ['string', 'bool']);
 
         $this->resolver->resolve();
     }
@@ -689,7 +689,7 @@ public function testResolveFailsIfInvalidAddedTypeMultiple()
     public function testResolveSucceedsIfValidAddedTypeMultiple()
     {
         $this->resolver->setDefault('foo', 'bar');
-        $this->resolver->addAllowedTypes('foo', array('string', 'bool'));
+        $this->resolver->addAllowedTypes('foo', ['string', 'bool']);
 
         $this->assertNotEmpty($this->resolver->resolve());
     }
@@ -747,7 +747,7 @@ public function testResolveFailsIfInvalidValue()
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedValues('foo', 'bar');
 
-        $this->resolver->resolve(array('foo' => 42));
+        $this->resolver->resolve(['foo' => 42]);
     }
 
     /**
@@ -778,7 +778,7 @@ public function testResolveSucceedsIfValidValue()
         $this->resolver->setDefault('foo', 'bar');
         $this->resolver->setAllowedValues('foo', 'bar');
 
-        $this->assertEquals(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testResolveSucceedsIfValidValueIsNull()
@@ -786,7 +786,7 @@ public function testResolveSucceedsIfValidValueIsNull()
         $this->resolver->setDefault('foo', null);
         $this->resolver->setAllowedValues('foo', null);
 
-        $this->assertEquals(array('foo' => null), $this->resolver->resolve());
+        $this->assertEquals(['foo' => null], $this->resolver->resolve());
     }
 
     /**
@@ -796,7 +796,7 @@ public function testResolveSucceedsIfValidValueIsNull()
     public function testResolveFailsIfInvalidValueMultiple()
     {
         $this->resolver->setDefault('foo', 42);
-        $this->resolver->setAllowedValues('foo', array('bar', false, null));
+        $this->resolver->setAllowedValues('foo', ['bar', false, null]);
 
         $this->resolver->resolve();
     }
@@ -804,9 +804,9 @@ public function testResolveFailsIfInvalidValueMultiple()
     public function testResolveSucceedsIfValidValueMultiple()
     {
         $this->resolver->setDefault('foo', 'baz');
-        $this->resolver->setAllowedValues('foo', array('bar', 'baz'));
+        $this->resolver->setAllowedValues('foo', ['bar', 'baz']);
 
-        $this->assertEquals(array('foo' => 'baz'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'baz'], $this->resolver->resolve());
     }
 
     public function testResolveFailsIfClosureReturnsFalse()
@@ -836,7 +836,7 @@ public function testResolveSucceedsIfClosureReturnsTrue()
             return true;
         });
 
-        $this->assertEquals(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'bar'], $this->resolver->resolve());
         $this->assertSame('bar', $passedValue);
     }
 
@@ -846,11 +846,11 @@ public function testResolveSucceedsIfClosureReturnsTrue()
     public function testResolveFailsIfAllClosuresReturnFalse()
     {
         $this->resolver->setDefault('foo', 42);
-        $this->resolver->setAllowedValues('foo', array(
+        $this->resolver->setAllowedValues('foo', [
             function () { return false; },
             function () { return false; },
             function () { return false; },
-        ));
+        ]);
 
         $this->resolver->resolve();
     }
@@ -858,13 +858,13 @@ function () { return false; },
     public function testResolveSucceedsIfAnyClosureReturnsTrue()
     {
         $this->resolver->setDefault('foo', 'bar');
-        $this->resolver->setAllowedValues('foo', array(
+        $this->resolver->setAllowedValues('foo', [
             function () { return false; },
             function () { return true; },
             function () { return false; },
-        ));
+        ]);
 
-        $this->assertEquals(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     /**
@@ -905,7 +905,7 @@ public function testResolveSucceedsIfValidAddedValue()
         $this->resolver->setDefault('foo', 'bar');
         $this->resolver->addAllowedValues('foo', 'bar');
 
-        $this->assertEquals(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testResolveSucceedsIfValidAddedValueIsNull()
@@ -913,7 +913,7 @@ public function testResolveSucceedsIfValidAddedValueIsNull()
         $this->resolver->setDefault('foo', null);
         $this->resolver->addAllowedValues('foo', null);
 
-        $this->assertEquals(array('foo' => null), $this->resolver->resolve());
+        $this->assertEquals(['foo' => null], $this->resolver->resolve());
     }
 
     /**
@@ -922,7 +922,7 @@ public function testResolveSucceedsIfValidAddedValueIsNull()
     public function testResolveFailsIfInvalidAddedValueMultiple()
     {
         $this->resolver->setDefault('foo', 42);
-        $this->resolver->addAllowedValues('foo', array('bar', 'baz'));
+        $this->resolver->addAllowedValues('foo', ['bar', 'baz']);
 
         $this->resolver->resolve();
     }
@@ -930,9 +930,9 @@ public function testResolveFailsIfInvalidAddedValueMultiple()
     public function testResolveSucceedsIfValidAddedValueMultiple()
     {
         $this->resolver->setDefault('foo', 'bar');
-        $this->resolver->addAllowedValues('foo', array('bar', 'baz'));
+        $this->resolver->addAllowedValues('foo', ['bar', 'baz']);
 
-        $this->assertEquals(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testAddAllowedValuesDoesNotOverwrite()
@@ -941,7 +941,7 @@ public function testAddAllowedValuesDoesNotOverwrite()
         $this->resolver->setAllowedValues('foo', 'bar');
         $this->resolver->addAllowedValues('foo', 'baz');
 
-        $this->assertEquals(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testAddAllowedValuesDoesNotOverwrite2()
@@ -950,7 +950,7 @@ public function testAddAllowedValuesDoesNotOverwrite2()
         $this->resolver->setAllowedValues('foo', 'bar');
         $this->resolver->addAllowedValues('foo', 'baz');
 
-        $this->assertEquals(array('foo' => 'baz'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'baz'], $this->resolver->resolve());
     }
 
     /**
@@ -971,7 +971,7 @@ public function testResolveSucceedsIfAnyAddedClosureReturnsTrue()
         $this->resolver->setAllowedValues('foo', function () { return false; });
         $this->resolver->addAllowedValues('foo', function () { return true; });
 
-        $this->assertEquals(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testResolveSucceedsIfAnyAddedClosureReturnsTrue2()
@@ -980,7 +980,7 @@ public function testResolveSucceedsIfAnyAddedClosureReturnsTrue2()
         $this->resolver->setAllowedValues('foo', function () { return true; });
         $this->resolver->addAllowedValues('foo', function () { return false; });
 
-        $this->assertEquals(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testSetNormalizerReturnsThis()
@@ -996,7 +996,7 @@ public function testSetNormalizerClosure()
             return 'normalized';
         });
 
-        $this->assertEquals(array('foo' => 'normalized'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'normalized'], $this->resolver->resolve());
     }
 
     /**
@@ -1029,7 +1029,7 @@ public function testNormalizerReceivesSetOption()
             return 'normalized['.$value.']';
         });
 
-        $this->assertEquals(array('foo' => 'normalized[bar]'), $this->resolver->resolve());
+        $this->assertEquals(['foo' => 'normalized[bar]'], $this->resolver->resolve());
     }
 
     public function testNormalizerReceivesPassedOption()
@@ -1040,9 +1040,9 @@ public function testNormalizerReceivesPassedOption()
             return 'normalized['.$value.']';
         });
 
-        $resolved = $this->resolver->resolve(array('foo' => 'baz'));
+        $resolved = $this->resolver->resolve(['foo' => 'baz']);
 
-        $this->assertEquals(array('foo' => 'normalized[baz]'), $resolved);
+        $this->assertEquals(['foo' => 'normalized[baz]'], $resolved);
     }
 
     /**
@@ -1089,10 +1089,10 @@ public function testNormalizerCanAccessOtherOptions()
             return 'normalized';
         });
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'default' => 'bar',
             'norm' => 'normalized',
-        ), $this->resolver->resolve());
+        ], $this->resolver->resolve());
     }
 
     public function testNormalizerCanAccessLazyOptions()
@@ -1109,10 +1109,10 @@ public function testNormalizerCanAccessLazyOptions()
             return 'normalized';
         });
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'lazy' => 'bar',
             'norm' => 'normalized',
-        ), $this->resolver->resolve());
+        ], $this->resolver->resolve());
     }
 
     /**
@@ -1156,7 +1156,7 @@ public function testCaughtExceptionFromNormalizerDoesNotCrashOptionResolver()
     {
         $throw = true;
 
-        $this->resolver->setDefaults(array('catcher' => null, 'thrower' => null));
+        $this->resolver->setDefaults(['catcher' => null, 'thrower' => null]);
 
         $this->resolver->setNormalizer('catcher', function (Options $options) {
             try {
@@ -1175,7 +1175,7 @@ public function testCaughtExceptionFromNormalizerDoesNotCrashOptionResolver()
             return true;
         });
 
-        $this->assertSame(array('catcher' => false, 'thrower' => true), $this->resolver->resolve());
+        $this->assertSame(['catcher' => false, 'thrower' => true], $this->resolver->resolve());
     }
 
     public function testCaughtExceptionFromLazyDoesNotCrashOptionResolver()
@@ -1199,7 +1199,7 @@ public function testCaughtExceptionFromLazyDoesNotCrashOptionResolver()
             return true;
         });
 
-        $this->assertSame(array('catcher' => false, 'thrower' => true), $this->resolver->resolve());
+        $this->assertSame(['catcher' => false, 'thrower' => true], $this->resolver->resolve());
     }
 
     public function testInvokeEachNormalizerOnlyOnce()
@@ -1236,7 +1236,7 @@ public function testNormalizerNotCalledForUnsetOptions()
 
     public function testSetDefaultsReturnsThis()
     {
-        $this->assertSame($this->resolver, $this->resolver->setDefaults(array('foo', 'bar')));
+        $this->assertSame($this->resolver, $this->resolver->setDefaults(['foo', 'bar']));
     }
 
     public function testSetDefaults()
@@ -1244,16 +1244,16 @@ public function testSetDefaults()
         $this->resolver->setDefault('one', '1');
         $this->resolver->setDefault('two', 'bar');
 
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'two' => '2',
             'three' => '3',
-        ));
+        ]);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'one' => '1',
             'two' => '2',
             'three' => '3',
-        ), $this->resolver->resolve());
+        ], $this->resolver->resolve());
     }
 
     /**
@@ -1262,7 +1262,7 @@ public function testSetDefaults()
     public function testFailIfSetDefaultsFromLazyOption()
     {
         $this->resolver->setDefault('foo', function (Options $options) {
-            $options->setDefaults(array('two' => '2'));
+            $options->setDefaults(['two' => '2']);
         });
 
         $this->resolver->resolve();
@@ -1281,7 +1281,7 @@ public function testRemoveSingleOption()
         $this->resolver->setDefault('baz', 'boo');
         $this->resolver->remove('foo');
 
-        $this->assertSame(array('baz' => 'boo'), $this->resolver->resolve());
+        $this->assertSame(['baz' => 'boo'], $this->resolver->resolve());
     }
 
     public function testRemoveMultipleOptions()
@@ -1290,9 +1290,9 @@ public function testRemoveMultipleOptions()
         $this->resolver->setDefault('baz', 'boo');
         $this->resolver->setDefault('doo', 'dam');
 
-        $this->resolver->remove(array('foo', 'doo'));
+        $this->resolver->remove(['foo', 'doo']);
 
-        $this->assertSame(array('baz' => 'boo'), $this->resolver->resolve());
+        $this->assertSame(['baz' => 'boo'], $this->resolver->resolve());
     }
 
     public function testRemoveLazyOption()
@@ -1302,7 +1302,7 @@ public function testRemoveLazyOption()
         });
         $this->resolver->remove('foo');
 
-        $this->assertSame(array(), $this->resolver->resolve());
+        $this->assertSame([], $this->resolver->resolve());
     }
 
     public function testRemoveNormalizer()
@@ -1314,7 +1314,7 @@ public function testRemoveNormalizer()
         $this->resolver->remove('foo');
         $this->resolver->setDefault('foo', 'bar');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testRemoveAllowedTypes()
@@ -1324,17 +1324,17 @@ public function testRemoveAllowedTypes()
         $this->resolver->remove('foo');
         $this->resolver->setDefault('foo', 'bar');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testRemoveAllowedValues()
     {
         $this->resolver->setDefault('foo', 'bar');
-        $this->resolver->setAllowedValues('foo', array('baz', 'boo'));
+        $this->resolver->setAllowedValues('foo', ['baz', 'boo']);
         $this->resolver->remove('foo');
         $this->resolver->setDefault('foo', 'bar');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     /**
@@ -1378,7 +1378,7 @@ public function testClearLazyOption()
         });
         $this->resolver->clear();
 
-        $this->assertSame(array(), $this->resolver->resolve());
+        $this->assertSame([], $this->resolver->resolve());
     }
 
     public function testClearNormalizer()
@@ -1390,7 +1390,7 @@ public function testClearNormalizer()
         $this->resolver->clear();
         $this->resolver->setDefault('foo', 'bar');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testClearAllowedTypes()
@@ -1400,7 +1400,7 @@ public function testClearAllowedTypes()
         $this->resolver->clear();
         $this->resolver->setDefault('foo', 'bar');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testClearAllowedValues()
@@ -1410,7 +1410,7 @@ public function testClearAllowedValues()
         $this->resolver->clear();
         $this->resolver->setDefault('foo', 'bar');
 
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     /**
@@ -1469,7 +1469,7 @@ public function testArrayAccess()
             // accessed
         });
 
-        $this->resolver->resolve(array('default2' => 42, 'required' => 'value'));
+        $this->resolver->resolve(['default2' => 42, 'required' => 'value']);
     }
 
     /**
@@ -1567,7 +1567,7 @@ public function testCount()
             Assert::assertCount(4, $options);
         });
 
-        $this->assertCount(4, $this->resolver->resolve(array('required' => 'value')));
+        $this->assertCount(4, $this->resolver->resolve(['required' => 'value']));
     }
 
     /**
@@ -1592,18 +1592,18 @@ public function testNestedArrays()
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'int[][]');
 
-        $this->assertEquals(array(
-            'foo' => array(
-                array(
+        $this->assertEquals([
+            'foo' => [
+                [
                     1, 2,
-                ),
-            ),
-        ), $this->resolver->resolve(
-            array(
-                'foo' => array(
-                    array(1, 2),
-                ),
-            )
+                ],
+            ],
+        ], $this->resolver->resolve(
+            [
+                'foo' => [
+                    [1, 2],
+                ],
+            ]
         ));
     }
 
@@ -1612,26 +1612,26 @@ public function testNested2Arrays()
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'int[][][][]');
 
-        $this->assertEquals(array(
-            'foo' => array(
-                array(
-                    array(
-                        array(
+        $this->assertEquals([
+            'foo' => [
+                [
+                    [
+                        [
                             1, 2,
-                        ),
-                    ),
-                ),
-            ),
-        ), $this->resolver->resolve(
-            array(
-                'foo' => array(
-                    array(
-                        array(
-                            array(1, 2),
-                        ),
-                    ),
-                ),
-            )
+                        ],
+                    ],
+                ],
+            ],
+        ], $this->resolver->resolve(
+            [
+                'foo' => [
+                    [
+                        [
+                            [1, 2],
+                        ],
+                    ],
+                ],
+            ]
         ));
     }
 
@@ -1645,15 +1645,15 @@ public function testNestedArraysException()
         $this->resolver->setAllowedTypes('foo', 'float[][][][]');
 
         $this->resolver->resolve(
-            array(
-                'foo' => array(
-                    array(
-                        array(
-                            array(1, 2),
-                        ),
-                    ),
-                ),
-            )
+            [
+                'foo' => [
+                    [
+                        [
+                            [1, 2],
+                        ],
+                    ],
+                ],
+            ]
         );
     }
 
@@ -1665,11 +1665,11 @@ public function testNestedArrayException1()
     {
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'int[][]');
-        $this->resolver->resolve(array(
-            'foo' => array(
-                array(1, true, 'str', array(2, 3)),
-            ),
-        ));
+        $this->resolver->resolve([
+            'foo' => [
+                [1, true, 'str', [2, 3]],
+            ],
+        ]);
     }
 
     /**
@@ -1680,11 +1680,11 @@ public function testNestedArrayException2()
     {
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'int[][]');
-        $this->resolver->resolve(array(
-            'foo' => array(
-                array(true, 'str', array(2, 3)),
-            ),
-        ));
+        $this->resolver->resolve([
+            'foo' => [
+                [true, 'str', [2, 3]],
+            ],
+        ]);
     }
 
     /**
@@ -1695,11 +1695,11 @@ public function testNestedArrayException3()
     {
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'string[][][]');
-        $this->resolver->resolve(array(
-            'foo' => array(
-                array('str', array(1, 2)),
-            ),
-        ));
+        $this->resolver->resolve([
+            'foo' => [
+                ['str', [1, 2]],
+            ],
+        ]);
     }
 
     /**
@@ -1710,12 +1710,12 @@ public function testNestedArrayException4()
     {
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'string[][][]');
-        $this->resolver->resolve(array(
-            'foo' => array(
-                array(
-                    array('str'), array(1, 2), ),
-            ),
-        ));
+        $this->resolver->resolve([
+            'foo' => [
+                [
+                    ['str'], [1, 2], ],
+            ],
+        ]);
     }
 
     /**
@@ -1726,11 +1726,11 @@ public function testNestedArrayException5()
     {
         $this->resolver->setDefined('foo');
         $this->resolver->setAllowedTypes('foo', 'string[]');
-        $this->resolver->resolve(array(
-            'foo' => array(
-                array(
-                    array('str'), array(1, 2), ),
-            ),
-        ));
+        $this->resolver->resolve([
+            'foo' => [
+                [
+                    ['str'], [1, 2], ],
+            ],
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Process/ExecutableFinder.php b/src/Symfony/Component/Process/ExecutableFinder.php
index 90cafa34e328..a621fc6918e5 100644
--- a/src/Symfony/Component/Process/ExecutableFinder.php
+++ b/src/Symfony/Component/Process/ExecutableFinder.php
@@ -19,7 +19,7 @@
  */
 class ExecutableFinder
 {
-    private $suffixes = array('.exe', '.bat', '.cmd', '.com');
+    private $suffixes = ['.exe', '.bat', '.cmd', '.com'];
 
     /**
      * Replaces default suffixes of executable.
@@ -48,11 +48,11 @@ public function addSuffix($suffix)
      *
      * @return string|null The executable path or default value
      */
-    public function find($name, $default = null, array $extraDirs = array())
+    public function find($name, $default = null, array $extraDirs = [])
     {
         if (ini_get('open_basedir')) {
             $searchPath = explode(PATH_SEPARATOR, ini_get('open_basedir'));
-            $dirs = array();
+            $dirs = [];
             foreach ($searchPath as $path) {
                 // Silencing against https://bugs.php.net/69240
                 if (@is_dir($path)) {
@@ -70,7 +70,7 @@ public function find($name, $default = null, array $extraDirs = array())
             );
         }
 
-        $suffixes = array('');
+        $suffixes = [''];
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $pathExt = getenv('PATHEXT');
             $suffixes = array_merge($pathExt ? explode(PATH_SEPARATOR, $pathExt) : $this->suffixes, $suffixes);
diff --git a/src/Symfony/Component/Process/InputStream.php b/src/Symfony/Component/Process/InputStream.php
index 0214014eb7f3..757d6294554e 100644
--- a/src/Symfony/Component/Process/InputStream.php
+++ b/src/Symfony/Component/Process/InputStream.php
@@ -22,7 +22,7 @@ class InputStream implements \IteratorAggregate
 {
     /** @var callable|null */
     private $onEmpty = null;
-    private $input = array();
+    private $input = [];
     private $open = true;
 
     /**
diff --git a/src/Symfony/Component/Process/PhpExecutableFinder.php b/src/Symfony/Component/Process/PhpExecutableFinder.php
index 334de13fc060..a97aa12cbff4 100644
--- a/src/Symfony/Component/Process/PhpExecutableFinder.php
+++ b/src/Symfony/Component/Process/PhpExecutableFinder.php
@@ -44,7 +44,7 @@ public function find($includeArgs = true)
         }
 
         // PHP_BINARY return the current sapi executable
-        if (PHP_BINARY && \in_array(\PHP_SAPI, array('cli', 'cli-server', 'phpdbg'), true)) {
+        if (PHP_BINARY && \in_array(\PHP_SAPI, ['cli', 'cli-server', 'phpdbg'], true)) {
             return PHP_BINARY.$args;
         }
 
@@ -66,7 +66,7 @@ public function find($includeArgs = true)
             return $php;
         }
 
-        $dirs = array(PHP_BINDIR);
+        $dirs = [PHP_BINDIR];
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dirs[] = 'C:\xampp\php\\';
         }
@@ -81,7 +81,7 @@ public function find($includeArgs = true)
      */
     public function findArguments()
     {
-        $arguments = array();
+        $arguments = [];
 
         if (\defined('HHVM_VERSION')) {
             $arguments[] = '--php';
diff --git a/src/Symfony/Component/Process/PhpProcess.php b/src/Symfony/Component/Process/PhpProcess.php
index 5b84783067af..e1d749633e5a 100644
--- a/src/Symfony/Component/Process/PhpProcess.php
+++ b/src/Symfony/Component/Process/PhpProcess.php
@@ -37,7 +37,7 @@ public function __construct($script, $cwd = null, array $env = null, $timeout =
         if (false === $php = $executableFinder->find(false)) {
             $php = null;
         } else {
-            $php = array_merge(array($php), $executableFinder->findArguments());
+            $php = array_merge([$php], $executableFinder->findArguments());
         }
         if ('phpdbg' === \PHP_SAPI) {
             $file = tempnam(sys_get_temp_dir(), 'dbg');
diff --git a/src/Symfony/Component/Process/Pipes/AbstractPipes.php b/src/Symfony/Component/Process/Pipes/AbstractPipes.php
index e5e26866afd9..23886b616387 100644
--- a/src/Symfony/Component/Process/Pipes/AbstractPipes.php
+++ b/src/Symfony/Component/Process/Pipes/AbstractPipes.php
@@ -20,7 +20,7 @@
  */
 abstract class AbstractPipes implements PipesInterface
 {
-    public $pipes = array();
+    public $pipes = [];
 
     private $inputBuffer = '';
     private $input;
@@ -49,7 +49,7 @@ public function close()
         foreach ($this->pipes as $pipe) {
             fclose($pipe);
         }
-        $this->pipes = array();
+        $this->pipes = [];
     }
 
     /**
@@ -117,8 +117,8 @@ protected function write()
             }
         }
 
-        $r = $e = array();
-        $w = array($this->pipes[0]);
+        $r = $e = [];
+        $w = [$this->pipes[0]];
 
         // let's have a look if something changed in streams
         if (false === @stream_select($r, $w, $e, 0, 0)) {
@@ -130,7 +130,7 @@ protected function write()
                 $written = fwrite($stdin, $this->inputBuffer);
                 $this->inputBuffer = substr($this->inputBuffer, $written);
                 if (isset($this->inputBuffer[0])) {
-                    return array($this->pipes[0]);
+                    return [$this->pipes[0]];
                 }
             }
 
@@ -145,7 +145,7 @@ protected function write()
                     if (isset($data[0])) {
                         $this->inputBuffer = $data;
 
-                        return array($this->pipes[0]);
+                        return [$this->pipes[0]];
                     }
                 }
                 if (feof($input)) {
@@ -164,7 +164,7 @@ protected function write()
             fclose($this->pipes[0]);
             unset($this->pipes[0]);
         } elseif (!$w) {
-            return array($this->pipes[0]);
+            return [$this->pipes[0]];
         }
     }
 
diff --git a/src/Symfony/Component/Process/Pipes/UnixPipes.php b/src/Symfony/Component/Process/Pipes/UnixPipes.php
index 254df51902cb..1ebf2138a56f 100644
--- a/src/Symfony/Component/Process/Pipes/UnixPipes.php
+++ b/src/Symfony/Component/Process/Pipes/UnixPipes.php
@@ -48,34 +48,34 @@ public function getDescriptors()
         if (!$this->haveReadSupport) {
             $nullstream = fopen('/dev/null', 'c');
 
-            return array(
-                array('pipe', 'r'),
+            return [
+                ['pipe', 'r'],
                 $nullstream,
                 $nullstream,
-            );
+            ];
         }
 
         if ($this->ttyMode) {
-            return array(
-                array('file', '/dev/tty', 'r'),
-                array('file', '/dev/tty', 'w'),
-                array('file', '/dev/tty', 'w'),
-            );
+            return [
+                ['file', '/dev/tty', 'r'],
+                ['file', '/dev/tty', 'w'],
+                ['file', '/dev/tty', 'w'],
+            ];
         }
 
         if ($this->ptyMode && Process::isPtySupported()) {
-            return array(
-       
10000
         array('pty'),
-                array('pty'),
-                array('pty'),
-            );
+            return [
+                ['pty'],
+                ['pty'],
+                ['pty'],
+            ];
         }
 
-        return array(
-            array('pipe', 'r'),
-            array('pipe', 'w'), // stdout
-            array('pipe', 'w'), // stderr
-        );
+        return [
+            ['pipe', 'r'],
+            ['pipe', 'w'], // stdout
+            ['pipe', 'w'], // stderr
+        ];
     }
 
     /**
@@ -83,7 +83,7 @@ public function getDescriptors()
      */
     public function getFiles()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -94,18 +94,18 @@ public function readAndWrite($blocking, $close = false)
         $this->unblock();
         $w = $this->write();
 
-        $read = $e = array();
+        $read = $e = [];
         $r = $this->pipes;
         unset($r[0]);
 
         // let's have a look if something changed in streams
-        set_error_handler(array($this, 'handleError'));
+        set_error_handler([$this, 'handleError']);
         if (($r || $w) && false === stream_select($r, $w, $e, 0, $blocking ? Process::TIMEOUT_PRECISION * 1E6 : 0)) {
             restore_error_handler();
             // if a system call has been interrupted, forget about it, let's try again
             // otherwise, an error occurred, let's reset pipes
             if (!$this->hasSystemCallBeenInterrupted()) {
-                $this->pipes = array();
+                $this->pipes = [];
             }
 
             return $read;
diff --git a/src/Symfony/Component/Process/Pipes/WindowsPipes.php b/src/Symfony/Component/Process/Pipes/WindowsPipes.php
index f577c08cc440..1619e632f134 100644
--- a/src/Symfony/Component/Process/Pipes/WindowsPipes.php
+++ b/src/Symfony/Component/Process/Pipes/WindowsPipes.php
@@ -26,13 +26,13 @@
  */
 class WindowsPipes extends AbstractPipes
 {
-    private $files = array();
-    private $fileHandles = array();
-    private $lockHandles = array();
-    private $readBytes = array(
+    private $files = [];
+    private $fileHandles = [];
+    private $lockHandles = [];
+    private $readBytes = [
         Process::STDOUT => 0,
         Process::STDERR => 0,
-    );
+    ];
     private $haveReadSupport;
 
     public function __construct($input, $haveReadSupport)
@@ -44,10 +44,10 @@ public function __construct($input, $haveReadSupport)
             // Workaround for this problem is to use temporary files instead of pipes on Windows platform.
             //
             // @see https://bugs.php.net/bug.php?id=51800
-            $pipes = array(
+            $pipes = [
                 Process::STDOUT => Process::OUT,
                 Process::STDERR => Process::ERR,
-            );
+            ];
             $tmpDir = sys_get_temp_dir();
             $lastError = 'unknown reason';
             set_error_handler(function ($type, $msg) use (&$lastError) { $lastError = $msg; });
@@ -98,21 +98,21 @@ public function getDescriptors()
         if (!$this->haveReadSupport) {
             $nullstream = fopen('NUL', 'c');
 
-            return array(
-                array('pipe', 'r'),
+            return [
+                ['pipe', 'r'],
                 $nullstream,
                 $nullstream,
-            );
+            ];
         }
 
         // We're not using pipe on Windows platform as it hangs (https://bugs.php.net/bug.php?id=51800)
         // We're not using file handles as it can produce corrupted output https://bugs.php.net/bug.php?id=65650
         // So we redirect output within the commandline and pass the nul device to the process
-        return array(
-            array('pipe', 'r'),
-            array('file', 'NUL', 'w'),
-            array('file', 'NUL', 'w'),
-        );
+        return [
+            ['pipe', 'r'],
+            ['file', 'NUL', 'w'],
+            ['file', 'NUL', 'w'],
+        ];
     }
 
     /**
@@ -130,7 +130,7 @@ public function readAndWrite($blocking, $close = false)
     {
         $this->unblock();
         $w = $this->write();
-        $read = $r = $e = array();
+        $read = $r = $e = [];
 
         if ($blocking) {
             if ($w) {
@@ -186,6 +186,6 @@ public function close()
             flock($this->lockHandles[$type], LOCK_UN);
             fclose($this->lockHandles[$type]);
         }
-        $this->fileHandles = $this->lockHandles = array();
+        $this->fileHandles = $this->lockHandles = [];
     }
 }
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index 20af10324e8b..cfd5adb7365c 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -58,9 +58,9 @@ class Process implements \IteratorAggregate
     private $lastOutputTime;
     private $timeout;
     private $idleTimeout;
-    private $options = array('suppress_errors' => true);
+    private $options = ['suppress_errors' => true];
     private $exitcode;
-    private $fallbackStatus = array();
+    private $fallbackStatus = [];
     private $processInformation;
     private $outputDisabled = false;
     private $stdout;
@@ -88,7 +88,7 @@ class Process implements \IteratorAggregate
      *
      * User-defined errors must use exit codes in the 64-113 range.
      */
-    public static $exitCodes = array(
+    public static $exitCodes = [
         0 => 'OK',
         1 => 'General error',
         2 => 'Misuse of shell builtins',
@@ -129,7 +129,7 @@ class Process implements \IteratorAggregate
         157 => 'Pollable event',
         // 158 - not defined
         159 => 'Bad syscall',
-    );
+    ];
 
     /**
      * @param string|array   $commandline The command line to run
@@ -287,7 +287,7 @@ public function start(callable $callback = null/*, array $env = array()*/)
         $inheritEnv = $this->inheritEnv;
 
         if (\is_array($commandline = $this->commandline)) {
-            $commandline = implode(' ', array_map(array($this, 'escapeArgument'), $commandline));
+            $commandline = implode(' ', array_map([$this, 'escapeArgument'], $commandline));
 
             if ('\\' !== \DIRECTORY_SEPARATOR) {
                 // exec is mandatory to deal with sending a signal to the process
@@ -316,7 +316,7 @@ public function start(callable $callback = null/*, array $env = array()*/)
             $commandline = $this->prepareWindowsCommandLine($commandline, $env);
         } elseif (!$this->useFileHandles && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
             // last exit code is output on the fourth pipe and caught to work around --enable-sigchild
-            $descriptors[3] = array('pipe', 'w');
+            $descriptors[3] = ['pipe', 'w'];
 
             // See https://unix.stackexchange.com/questions/71205/background-process-pipe-input
             $commandline = '{ ('.$commandline.') <&3 3<&- 3>/dev/null & } 3<&0;';
@@ -329,7 +329,7 @@ public function start(callable $callback = null/*, array $env = array()*/)
         if (\defined('HHVM_VERSION')) {
             $envPairs = $env;
         } else {
-            $envPairs = array();
+            $envPairs = [];
             foreach ($env as $k => $v) {
                 if (false !== $v) {
                     $envPairs[] = $k.'='.$v;
@@ -939,7 +939,7 @@ public function addErrorOutput($line)
      */
     public function getCommandLine()
     {
-        return \is_array($this->commandline) ? implode(' ', array_map(array($this, 'escapeArgument'), $this->commandline)) : $this->commandline;
+        return \is_array($this->commandline) ? implode(' ', array_map([$this, 'escapeArgument'], $this->commandline)) : $this->commandline;
     }
 
     /**
@@ -1035,7 +1035,7 @@ public function setTty($tty)
             static $isTtySupported;
 
             if (null === $isTtySupported) {
-                $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', array(array('file', '/dev/tty', 'r'), array('file', '/dev/tty', 'w'), array('file', '/dev/tty', 'w')), $pipes);
+                $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
             }
 
             if (!$isTtySupported) {
@@ -1359,7 +1359,7 @@ public static function isPtySupported()
             return $result = false;
         }
 
-        return $result = (bool) @proc_open('echo 1 >/dev/null', array(array('pty'), array('pty'), array('pty')), $pipes);
+        return $result = (bool) @proc_open('echo 1 >/dev/null', [['pty'], ['pty'], ['pty']], $pipes);
     }
 
     /**
@@ -1563,7 +1563,7 @@ private function resetProcessData()
         $this->starttime = null;
         $this->callback = null;
         $this->exitcode = null;
-        $this->fallbackStatus = array();
+        $this->fallbackStatus = [];
         $this->processInformation = null;
         $this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b');
         $this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b');
@@ -1610,7 +1610,7 @@ private function doSignal($signal, $throwException)
                 $ok = @proc_terminate($this->process, $signal);
             } elseif (\function_exists('posix_kill')) {
                 $ok = @posix_kill($pid, $signal);
-            } elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), array(2 => array('pipe', 'w')), $pipes)) {
+            } elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), [2 => ['pipe', 'w']], $pipes)) {
                 $ok = false === fgets($pipes[2]);
             }
             if (!$ok) {
@@ -1634,7 +1634,7 @@ private function prepareWindowsCommandLine($cmd, array &$env)
     {
         $uid = uniqid('', true);
         $varCount = 0;
-        $varCache = array();
+        $varCache = [];
         $cmd = preg_replace_callback(
             '/"(?:(
                 [^"%!^]*+
@@ -1657,7 +1657,7 @@ function ($m) use (&$env, &$varCache, &$varCount, $uid) {
                     return '"'.$value.'"';
                 }
 
-                $value = str_replace(array('!LF!', '"^!"', '"^%"', '"^^"', '""'), array("\n", '!', '%', '^', '"'), $value);
+                $value = str_replace(['!LF!', '"^!"', '"^%"', '"^^"', '""'], ["\n", '!', '%', '^', '"'], $value);
                 $value = '"'.preg_replace('/(\\\\*)"/', '$1$1\\"', $value).'"';
                 $var = $uid.++$varCount;
 
@@ -1727,12 +1727,12 @@ private function escapeArgument($argument)
         }
         $argument = preg_replace('/(\\\\+)$/', '$1$1', $argument);
 
-        return '"'.str_replace(array('"', '^', '%', '!', "\n"), array('""', '"^^"', '"^%"', '"^!"', '!LF!'), $argument).'"';
+        return '"'.str_replace(['"', '^', '%', '!', "\n"], ['""', '"^^"', '"^%"', '"^!"', '!LF!'], $argument).'"';
     }
 
     private function getDefaultEnv()
     {
-        $env = array();
+        $env = [];
 
         foreach ($_SERVER as $k => $v) {
             if (\is_string($v) && false !== $v = getenv($k)) {
diff --git a/src/Symfony/Component/Process/ProcessBuilder.php b/src/Symfony/Component/Process/ProcessBuilder.php
index 9ad3924666fd..69d13c3f1bca 100644
--- a/src/Symfony/Component/Process/ProcessBuilder.php
+++ b/src/Symfony/Component/Process/ProcessBuilder.php
@@ -25,18 +25,18 @@ class ProcessBuilder
 {
     private $arguments;
     private $cwd;
-    private $env = array();
+    private $env = [];
     private $input;
     private $timeout = 60;
     private $options;
     private $inheritEnv = true;
-    private $prefix = array();
+    private $prefix = [];
     private $outputDisabled = false;
 
     /**
      * @param string[] $arguments An array of arguments
      */
-    public function __construct(array $arguments = array())
+    public function __construct(array $arguments = [])
     {
         $this->arguments = $arguments;
     }
@@ -48,7 +48,7 @@ public function __construct(array $arguments = array())
      *
      * @return static
      */
-    public static function create(array $arguments = array())
+    public static function create(array $arguments = [])
     {
         return new static($arguments);
     }
@@ -78,7 +78,7 @@ public function add($argument)
      */
     public function setPrefix($prefix)
     {
-        $this->prefix = \is_array($prefix) ? $prefix : array($prefix);
+        $this->prefix = \is_array($prefix) ? $prefix : [$prefix];
 
         return $this;
     }
diff --git a/src/Symfony/Component/Process/Tests/ExecutableFinderTest.php b/src/Symfony/Component/Process/Tests/ExecutableFinderTest.php
index 7959b5dc5e41..a437f2bb6f77 100644
--- a/src/Symfony/Component/Process/Tests/ExecutableFinderTest.php
+++ b/src/Symfony/Component/Process/Tests/ExecutableFinderTest.php
@@ -88,7 +88,7 @@ public function testFindWithExtraDirs()
 
         $this->setPath('');
 
-        $extraDirs = array(\dirname(PHP_BINARY));
+        $extraDirs = [\dirname(PHP_BINARY)];
 
         $finder = new ExecutableFinder();
         $result = $finder->find($this->getPhpBinaryName(), null, $extraDirs);
diff --git a/src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php b/src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php
index 0c9e32d7d72f..795be8fa24bf 100644
--- a/src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php
+++ b/src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php
@@ -62,11 +62,11 @@ public function testFindArguments()
         $f = new PhpExecutableFinder();
 
         if (\defined('HHVM_VERSION')) {
-            $this->assertEquals($f->findArguments(), array('--php'), '::findArguments() returns HHVM arguments');
+            $this->assertEquals($f->findArguments(), ['--php'], '::findArguments() returns HHVM arguments');
         } elseif ('phpdbg' === \PHP_SAPI) {
-            $this->assertEquals($f->findArguments(), array('-qrr'), '::findArguments() returns phpdbg arguments');
+            $this->assertEquals($f->findArguments(), ['-qrr'], '::findArguments() returns phpdbg arguments');
         } else {
-            $this->assertEquals($f->findArguments(), array(), '::findArguments() returns no arguments');
+            $this->assertEquals($f->findArguments(), [], '::findArguments() returns no arguments');
         }
     }
 }
diff --git a/src/Symfony/Component/Process/Tests/PipeStdinInStdoutStdErrStreamSelect.php b/src/Symfony/Component/Process/Tests/PipeStdinInStdoutStdErrStreamSelect.php
index 1ea0e127f76b..9ea8981e19b7 100644
--- a/src/Symfony/Component/Process/Tests/PipeStdinInStdoutStdErrStreamSelect.php
+++ b/src/Symfony/Component/Process/Tests/PipeStdinInStdoutStdErrStreamSelect.php
@@ -14,8 +14,8 @@
 define('ERR_READ_FAILED', 3);
 define('ERR_WRITE_FAILED', 4);
 
-$read = array(STDIN);
-$write = array(STDOUT, STDERR);
+$read = [STDIN];
+$write = [STDOUT, STDERR];
 
 stream_set_blocking(STDIN, 0);
 stream_set_blocking(STDOUT, 0);
@@ -42,7 +42,7 @@
         $out = (string) substr($out, $written);
     }
     if (null === $read && '' === $out) {
-        $write = array_diff($write, array(STDOUT));
+        $write = array_diff($write, [STDOUT]);
     }
 
     if (in_array(STDERR, $w) && strlen($err) > 0) {
@@ -53,7 +53,7 @@
         $err = (string) substr($err, $written);
     }
     if (null === $read && '' === $err) {
-        $write = array_diff($write, array(STDERR));
+        $write = array_diff($write, [STDERR]);
     }
 
     if ($r) {
diff --git a/src/Symfony/Component/Process/Tests/ProcessBuilderTest.php b/src/Symfony/Component/Process/Tests/ProcessBuilderTest.php
index c98b8730538f..349b197a415b 100644
--- a/src/Symfony/Component/Process/Tests/ProcessBuilderTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessBuilderTest.php
@@ -38,10 +38,10 @@ public function testInheritEnvironmentVars()
     public function testAddEnvironmentVariables()
     {
         $pb = new ProcessBuilder();
-        $env = array(
+        $env = [
             'foo' => 'bar',
             'foo2' => 'bar2',
-        );
+        ];
         $proc = $pb
             ->add('command')
             ->setEnv('foo', 'bar2')
@@ -76,8 +76,8 @@ public function testNullTimeout()
 
     public function testShouldSetArguments()
     {
-        $pb = new ProcessBuilder(array('initial'));
-        $pb->setArguments(array('second'));
+        $pb = new ProcessBuilder(['initial']);
+        $pb->setArguments(['second']);
 
         $proc = $pb->getProcess();
 
@@ -89,14 +89,14 @@ public function testPrefixIsPrependedToAllGeneratedProcess()
         $pb = new ProcessBuilder();
         $pb->setPrefix('/usr/bin/php');
 
-        $proc = $pb->setArguments(array('-v'))->getProcess();
+        $proc = $pb->setArguments(['-v'])->getProcess();
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $this->assertEquals('"/usr/bin/php" -v', $proc->getCommandLine());
         } else {
             $this->assertEquals("'/usr/bin/php' '-v'", $proc->getCommandLine());
         }
 
-        $proc = $pb->setArguments(array('-i'))->getProcess();
+        $proc = $pb->setArguments(['-i'])->getProcess();
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $this->assertEquals('"/usr/bin/php" -i', $proc->getCommandLine());
         } else {
@@ -107,16 +107,16 @@ public function testPrefixIsPrependedToAllGeneratedProcess()
     public function testArrayPrefixesArePrependedToAllGeneratedProcess()
     {
         $pb = new ProcessBuilder();
-        $pb->setPrefix(array('/usr/bin/php', 'composer.phar'));
+        $pb->setPrefix(['/usr/bin/php', 'composer.phar']);
 
-        $proc = $pb->setArguments(array('-v'))->getProcess();
+        $proc = $pb->setArguments(['-v'])->getProcess();
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $this->assertEquals('"/usr/bin/php" composer.phar -v', $proc->getCommandLine());
         } else {
             $this->assertEquals("'/usr/bin/php' 'composer.phar' '-v'", $proc->getCommandLine());
         }
 
-        $proc = $pb->setArguments(array('-i'))->getProcess();
+        $proc = $pb->setArguments(['-i'])->getProcess();
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $this->assertEquals('"/usr/bin/php" composer.phar -i', $proc->getCommandLine());
         } else {
@@ -126,7 +126,7 @@ public function testArrayPrefixesArePrependedToAllGeneratedProcess()
 
     public function testShouldEscapeArguments()
     {
-        $pb = new ProcessBuilder(array('%path%', 'foo " bar', '%baz%baz'));
+        $pb = new ProcessBuilder(['%path%', 'foo " bar', '%baz%baz']);
         $proc = $pb->getProcess();
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
@@ -138,7 +138,7 @@ public function testShouldEscapeArguments()
 
     public function testShouldEscapeArgumentsAndPrefix()
     {
-        $pb = new ProcessBuilder(array('arg'));
+        $pb = new ProcessBuilder(['arg']);
         $pb->setPrefix('%prefix%');
         $proc = $pb->getProcess();
 
@@ -172,7 +172,7 @@ public function testShouldNotThrowALogicExceptionIfNoArgument()
 
     public function testShouldNotThrowALogicExceptionIfNoPrefix()
     {
-        $process = ProcessBuilder::create(array('/usr/bin/php'))
+        $process = ProcessBuilder::create(['/usr/bin/php'])
             ->getProcess();
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
@@ -184,7 +184,7 @@ public function testShouldNotThrowALogicExceptionIfNoPrefix()
 
     public function testShouldReturnProcessWithDisabledOutput()
     {
-        $process = ProcessBuilder::create(array('/usr/bin/php'))
+        $process = ProcessBuilder::create(['/usr/bin/php'])
             ->disableOutput()
             ->getProcess();
 
@@ -193,7 +193,7 @@ public function testShouldReturnProcessWithDisabledOutput()
 
     public function testShouldReturnProcessWithEnabledOutput()
     {
-        $process = ProcessBuilder::create(array('/usr/bin/php'))
+        $process = ProcessBuilder::create(['/usr/bin/php'])
             ->disableOutput()
             ->enableOutput()
             ->getProcess();
@@ -208,7 +208,7 @@ public function testShouldReturnProcessWithEnabledOutput()
     public function testInvalidInput()
     {
         $builder = ProcessBuilder::create();
-        $builder->setInput(array());
+        $builder->setInput([]);
     }
 
     public function testDoesNotPrefixExec()
@@ -217,7 +217,7 @@ public function testDoesNotPrefixExec()
             $this->markTestSkipped('This test cannot run on Windows.');
         }
 
-        $builder = ProcessBuilder::create(array('command', '-v', 'ls'));
+        $builder = ProcessBuilder::create(['command', '-v', 'ls']);
         $process = $builder->getProcess();
         $process->run();
 
diff --git a/src/Symfony/Component/Process/Tests/ProcessFailedExceptionTest.php b/src/Symfony/Component/Process/Tests/ProcessFailedExceptionTest.php
index 25712af7ded1..4b0376ff4ef5 100644
--- a/src/Symfony/Component/Process/Tests/ProcessFailedExceptionTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessFailedExceptionTest.php
@@ -24,7 +24,7 @@ class ProcessFailedExceptionTest extends TestCase
      */
     public function testProcessFailedExceptionThrowsException()
     {
-        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(array('isSuccessful'))->setConstructorArgs(array('php'))->getMock();
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful'])->setConstructorArgs(['php'])->getMock();
         $process->expects($this->once())
             ->method('isSuccessful')
             ->will($this->returnValue(true));
@@ -52,7 +52,7 @@ public function testProcessFailedExceptionPopulatesInformationFromProcessOutput(
         $errorOutput = 'FATAL: Unexpected error';
         $workingDirectory = getcwd();
 
-        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(array('isSuccessful', 'getOutput', 'getErrorOutput', 'getExitCode', 'getExitCodeText', 'isOutputDisabled', 'getWorkingDirectory'))->setConstructorArgs(array($cmd))->getMock();
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful', 'getOutput', 'getErrorOutput', 'getExitCode', 'getExitCodeText', 'isOutputDisabled', 'getWorkingDirectory'])->setConstructorArgs([$cmd])->getMock();
         $process->expects($this->once())
             ->method('isSuccessful')
             ->will($this->returnValue(false));
@@ -100,7 +100,7 @@ public function testDisabledOutputInFailedExceptionDoesNotPopulateOutput()
         $exitText = 'General error';
         $workingDirectory = getcwd();
 
-        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(array('isSuccessful', 'isOutputDisabled', 'getExitCode', 'getExitCodeText', 'getOutput', 'getErrorOutput', 'getWorkingDirectory'))->setConstructorArgs(array($cmd))->getMock();
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful', 'isOutputDisabled', 'getExitCode', 'getExitCodeText', 'getOutput', 'getErrorOutput', 'getWorkingDirectory'])->setConstructorArgs([$cmd])->getMock();
         $process->expects($this->once())
             ->method('isSuccessful')
             ->will($this->returnValue(false));
diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
index da74a3db225a..99f27d4cd6de 100644
--- a/src/Symfony/Component/Process/Tests/ProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -115,7 +115,7 @@ public function testFloatAndNullTimeout()
      */
     public function testStopWithTimeoutIsActuallyWorking()
     {
-        $p = $this->getProcess(array(self::$phpBin, __DIR__.'/NonStopableProcess.php', 30));
+        $p = $this->getProcess([self::$phpBin, __DIR__.'/NonStopableProcess.php', 30]);
         $p->start();
 
         while (false === strpos($p->getOutput(), 'received')) {
@@ -276,10 +276,10 @@ public function testInvalidInput($value)
 
     public function provideInvalidInputValues()
     {
-        return array(
-            array(array()),
-            array(new NonStringifiable()),
-        );
+        return [
+            [[]],
+            [new NonStringifiable()],
+        ];
     }
 
     /**
@@ -294,25 +294,25 @@ public function testValidInput($expected, $value)
 
     public function provideInputValues()
     {
-        return array(
-            array(null, null),
-            array('24.5', 24.5),
-            array('input data', 'input data'),
-        );
+        return [
+            [null, null],
+            ['24.5', 24.5],
+            ['input data', 'input data'],
+        ];
     }
 
     public function chainedCommandsOutputProvider()
     {
         if ('\\' === \DIRECTORY_SEPARATOR) {
-            return array(
-                array("2 \r\n2\r\n", '&&', '2'),
-            );
+            return [
+                ["2 \r\n2\r\n", '&&', '2'],
+            ];
         }
 
-        return array(
-            array("1\n1\n", ';', '1'),
-            array("2\n2\n", '&&', '2'),
-        );
+        return [
+            ["1\n1\n", ';', '1'],
+            ["2\n2\n", '&&', '2'],
+        ];
     }
 
     /**
@@ -381,7 +381,7 @@ public function testIncrementalOutput($getOutput, $getIncrementalOutput, $uri)
 
         $p->start();
 
-        foreach (array('foo', 'bar') as $s) {
+        foreach (['foo', 'bar'] as $s) {
             while (false === strpos($p->$getOutput(), $s)) {
                 usleep(1000);
             }
@@ -397,10 +397,10 @@ public function testIncrementalOutput($getOutput, $getIncrementalOutput, $uri)
 
     public function provideIncrementalOutput()
     {
-        return array(
-            array('getOutput', 'getIncrementalOutput', 'php://stdout'),
-            array('getErrorOutput', 'getIncrementalErrorOutput', 'php://stderr'),
-        );
+        return [
+            ['getOutput', 'getIncrementalOutput', 'php://stdout'],
+            ['getErrorOutput', 'getIncrementalErrorOutput', 'php://stderr'],
+        ];
     }
 
     public function testGetOutput()
@@ -907,7 +907,7 @@ public function testGetPidIsNullAfterRun()
      */
     public function testSignal()
     {
-        $process = $this->getProcess(array(self::$phpBin, __DIR__.'/SignalListener.php'));
+        $process = $this->getProcess([self::$phpBin, __DIR__.'/SignalListener.php']);
         $process->start();
 
         while (false === strpos($process->getOutput(), 'Caught')) {
@@ -969,13 +969,13 @@ public function testMethodsThatNeedARunningProcess($method)
 
     public function provideMethodsThatNeedARunningProcess()
     {
-        return array(
-            array('getOutput'),
-            array('getIncrementalOutput'),
-            array('getErrorOutput'),
-            array('getIncrementalErrorOutput'),
-            array('wait'),
-        );
+        return [
+            ['getOutput'],
+            ['getIncrementalOutput'],
+            ['getErrorOutput'],
+            ['getIncrementalErrorOutput'],
+            ['wait'],
+        ];
     }
 
     /**
@@ -1000,12 +1000,12 @@ public function testMethodsThatNeedATerminatedProcess($method)
 
     public function provideMethodsThatNeedATerminatedProcess()
     {
-        return array(
-            array('hasBeenSignaled'),
-            array('getTermSignal'),
-            array('hasBeenStopped'),
-            array('getStopSignal'),
-        );
+        return [
+            ['hasBeenSignaled'],
+            ['getTermSignal'],
+            ['hasBeenStopped'],
+            ['getStopSignal'],
+        ];
     }
 
     /**
@@ -1032,10 +1032,10 @@ public function testWrongSignal($signal)
 
     public function provideWrongSignal()
     {
-        return array(
-            array(-4),
-            array('Céphalopodes'),
-        );
+        return [
+            [-4],
+            ['Céphalopodes'],
+        ];
     }
 
     public function testDisableOutputDisablesTheOutput()
@@ -1125,12 +1125,12 @@ public function testGetOutputWhileDisabled($fetchMethod)
 
     public function provideOutputFetchingMethods()
     {
-        return array(
-            array('getOutput'),
-            array('getIncrementalOutput'),
-            array('getErrorOutput'),
-            array('getIncrementalErrorOutput'),
-        );
+        return [
+            ['getOutput'],
+            ['getIncrementalOutput'],
+            ['getErrorOutput'],
+            ['getIncrementalErrorOutput'],
+        ];
     }
 
     public function testStopTerminatesProcessCleanly()
@@ -1162,32 +1162,32 @@ public function testTermSignalTerminatesProcessCleanly()
 
     public function responsesCodeProvider()
     {
-        return array(
+        return [
             //expected output / getter / code to execute
             //array(1,'getExitCode','exit(1);'),
             //array(true,'isSuccessful','exit();'),
-            array('output', 'getOutput', 'echo \'output\';'),
-        );
+            ['output', 'getOutput', 'echo \'output\';'],
+        ];
     }
 
     public function pipesCodeProvider()
     {
-        $variations = array(
+        $variations = [
             'fwrite(STDOUT, $in = file_get_contents(\'php://stdin\')); fwrite(STDERR, $in);',
             'include \''.__DIR__.'/PipeStdinInStdoutStdErrStreamSelect.php\';',
-        );
+        ];
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
             // Avoid XL buffers on Windows because of https://bugs.php.net/bug.php?id=65650
-            $sizes = array(1, 2, 4, 8);
+            $sizes = [1, 2, 4, 8];
         } else {
-            $sizes = array(1, 16, 64, 1024, 4096);
+            $sizes = [1, 16, 64, 1024, 4096];
         }
 
-        $codes = array();
+        $codes = [];
         foreach ($sizes as $size) {
             foreach ($variations as $code) {
-                $codes[] = array($code, $size);
+                $codes[] = [$code, $size];
             }
         }
 
@@ -1215,10 +1215,10 @@ public function testIncrementalOutputDoesNotRequireAnotherCall($stream, $method)
 
     public function provideVariousIncrementals()
     {
-        return array(
-            array('php://stdout', 'getIncrementalOutput'),
-            array('php://stderr', 'getIncrementalErrorOutput'),
-        );
+        return [
+            ['php://stdout', 'getIncrementalOutput'],
+            ['php://stderr', 'getIncrementalErrorOutput'],
+        ];
     }
 
     public function testIteratorInput()
@@ -1323,32 +1323,32 @@ public function testIteratorOutput()
         $process = $this->getProcessForCode('fwrite(STDOUT, 123); fwrite(STDERR, 234); flush(); usleep(10000); fwrite(STDOUT, fread(STDIN, 3)); fwrite(STDERR, 456);');
         $process->setInput($input);
         $process->start();
-        $output = array();
+        $output = [];
 
         foreach ($process as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
             break;
         }
-        $expectedOutput = array(
-            array($process::OUT, '123'),
-        );
+        $expectedOutput = [
+            [$process::OUT, '123'],
+        ];
         $this->assertSame($expectedOutput, $output);
 
         $input->write(345);
 
         foreach ($process as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
         }
 
         $this->assertSame('', $process->getOutput());
         $this->assertFalse($process->isRunning());
 
-        $expectedOutput = array(
-            array($process::OUT, '123'),
-            array($process::ERR, '234'),
-            array($process::OUT, '345'),
-            array($process::ERR, '456'),
-        );
+        $expectedOutput = [
+            [$process::OUT, '123'],
+            [$process::ERR, '234'],
+            [$process::OUT, '345'],
+            [$process::ERR, '456'],
+        ];
         $this->assertSame($expectedOutput, $output);
     }
 
@@ -1359,32 +1359,32 @@ public function testNonBlockingNorClearingIteratorOutput()
         $process = $this->getProcessForCode('fwrite(STDOUT, fread(STDIN, 3));');
         $process->setInput($input);
         $process->start();
-        $output = array();
+        $output = [];
 
         foreach ($process->getIterator($process::ITER_NON_BLOCKING | $process::ITER_KEEP_OUTPUT) as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
             break;
         }
-        $expectedOutput = array(
-            array($process::OUT, ''),
-        );
+        $expectedOutput = [
+            [$process::OUT, ''],
+        ];
         $this->assertSame($expectedOutput, $output);
 
         $input->write(123);
 
         foreach ($process->getIterator($process::ITER_NON_BLOCKING | $process::ITER_KEEP_OUTPUT) as $type => $data) {
             if ('' !== $data) {
-                $output[] = array($type, $data);
+                $output[] = [$type, $data];
             }
         }
 
         $this->assertSame('123', $process->getOutput());
         $this->assertFalse($process->isRunning());
 
-        $expectedOutput = array(
-            array($process::OUT, ''),
-            array($process::OUT, '123'),
-        );
+        $expectedOutput = [
+            [$process::OUT, ''],
+            [$process::OUT, '123'],
+        ];
         $this->assertSame($expectedOutput, $output);
     }
 
@@ -1406,7 +1406,7 @@ public function testChainedProcesses()
     public function testSetBadEnv()
     {
         $process = $this->getProcess('echo hello');
-        $process->setEnv(array('bad%%' => '123'));
+        $process->setEnv(['bad%%' => '123']);
         $process->inheritEnvironmentVariables(true);
 
         $process->run();
@@ -1420,7 +1420,7 @@ public function testEnvBackupDoesNotDeleteExistingVars()
         putenv('existing_var=foo');
         $_ENV['existing_var'] = 'foo';
         $process = $this->getProcess('php -r "echo getenv(\'new_test_var\');"');
-        $process->setEnv(array('existing_var' => 'bar', 'new_test_var' => 'foo'));
+        $process->setEnv(['existing_var' => 'bar', 'new_test_var' => 'foo']);
         $process->inheritEnvironmentVariables();
 
         $process->run();
@@ -1435,14 +1435,14 @@ public function testEnvBackupDoesNotDeleteExistingVars()
 
     public function testEnvIsInherited()
     {
-        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, array('BAR' => 'BAZ', 'EMPTY' => ''));
+        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, ['BAR' => 'BAZ', 'EMPTY' => '']);
 
         putenv('FOO=BAR');
         $_ENV['FOO'] = 'BAR';
 
         $process->run();
 
-        $expected = array('BAR' => 'BAZ', 'EMPTY' => '', 'FOO' => 'BAR');
+        $expected = ['BAR' => 'BAZ', 'EMPTY' => '', 'FOO' => 'BAR'];
         $env = array_intersect_key(unserialize($process->getOutput()), $expected);
 
         $this->assertEquals($expected, $env);
@@ -1456,7 +1456,7 @@ public function testEnvIsInherited()
      */
     public function testInheritEnvDisabled()
     {
-        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, array('BAR' => 'BAZ'));
+        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, ['BAR' => 'BAZ']);
 
         putenv('FOO=BAR');
         $_ENV['FOO'] = 'BAR';
@@ -1466,7 +1466,7 @@ public function testInheritEnvDisabled()
 
         $process->run();
 
-        $expected = array('BAR' => 'BAZ', 'FOO' => 'BAR');
+        $expected = ['BAR' => 'BAZ', 'FOO' => 'BAR'];
         $env = array_intersect_key(unserialize($process->getOutput()), $expected);
         unset($expected['FOO']);
 
@@ -1478,7 +1478,7 @@ public function testInheritEnvDisabled()
 
     public function testGetCommandLine()
     {
-        $p = new Process(array('/usr/bin/php'));
+        $p = new Process(['/usr/bin/php']);
 
         $expected = '\\' === \DIRECTORY_SEPARATOR ? '"/usr/bin/php"' : "'/usr/bin/php'";
         $this->assertSame($expected, $p->getCommandLine());
@@ -1489,7 +1489,7 @@ public function testGetCommandLine()
      */
     public function testEscapeArgument($arg)
     {
-        $p = new Process(array(self::$phpBin, '-r', 'echo $argv[1];', $arg));
+        $p = new Process([self::$phpBin, '-r', 'echo $argv[1];', $arg]);
         $p->run();
 
         $this->assertSame((string) $arg, $p->getOutput());
@@ -1501,7 +1501,7 @@ public function testEscapeArgument($arg)
      */
     public function testEscapeArgumentWhenInheritEnvDisabled($arg)
     {
-        $p = new Process(array(self::$phpBin, '-r', 'echo $argv[1];', $arg), null, array('BAR' => 'BAZ'));
+        $p = new Process([self::$phpBin, '-r', 'echo $argv[1];', $arg], null, ['BAR' => 'BAZ']);
         $p->inheritEnvironmentVariables(false);
         $p->run();
 
@@ -1528,24 +1528,24 @@ public function testRawCommandLine()
 
     public function provideEscapeArgument()
     {
-        yield array('a"b%c%');
-        yield array('a"b^c^');
-        yield array("a\nb'c");
-        yield array('a^b c!');
-        yield array("a!b\tc");
-        yield array('a\\\\"\\"');
-        yield array('éÉèÈàÀöä');
-        yield array(null);
-        yield array(1);
-        yield array(1.1);
+        yield ['a"b%c%'];
+        yield ['a"b^c^'];
+        yield ["a\nb'c"];
+        yield ['a^b c!'];
+        yield ["a!b\tc"];
+        yield ['a\\\\"\\"'];
+        yield ['éÉèÈàÀöä'];
+        yield [null];
+        yield [1];
+        yield [1.1];
     }
 
     public function testEnvArgument()
     {
-        $env = array('FOO' => 'Foo', 'BAR' => 'Bar');
+        $env = ['FOO' => 'Foo', 'BAR' => 'Bar'];
         $cmd = '\\' === \DIRECTORY_SEPARATOR ? 'echo !FOO! !BAR! !BAZ!' : 'echo $FOO $BAR $BAZ';
         $p = new Process($cmd, null, $env);
-        $p->run(null, array('BAR' => 'baR', 'BAZ' => 'baZ'));
+        $p->run(null, ['BAR' => 'baR', 'BAZ' => 'baZ']);
 
         $this->assertSame('Foo baR baZ', rtrim($p->getOutput()));
         $this->assertSame($env, $p->getEnv());
@@ -1593,7 +1593,7 @@ private function getProcess($commandline, $cwd = null, array $env = null, $input
      */
     private function getProcessForCode($code, $cwd = null, array $env = null, $input = null, $timeout = 60)
     {
-        return $this->getProcess(array(self::$phpBin, '-r', $code), $cwd, $env, $input, $timeout);
+        return $this->getProcess([self::$phpBin, '-r', $code], $cwd, $env, $input, $timeout);
     }
 
     private function skipIfNotEnhancedSigchild($expectException = true)
diff --git a/src/Symfony/Component/Process/Tests/ProcessUtilsTest.php b/src/Symfony/Component/Process/Tests/ProcessUtilsTest.php
index 0a3ccb5768aa..0c2fe94dc174 100644
--- a/src/Symfony/Component/Process/Tests/ProcessUtilsTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessUtilsTest.php
@@ -30,24 +30,24 @@ public function testEscapeArgument($result, $argument)
     public function dataArguments()
     {
         if ('\\' === \DIRECTORY_SEPARATOR) {
-            return array(
-                array('"\"php\" \"-v\""', '"php" "-v"'),
-                array('"foo bar"', 'foo bar'),
-                array('^%"path"^%', '%path%'),
-                array('"<|>\\" \\"\'f"', '<|>" "\'f'),
-                array('""', ''),
-                array('"with\trailingbs\\\\"', 'with\trailingbs\\'),
-            );
+            return [
+                ['"\"php\" \"-v\""', '"php" "-v"'],
+                ['"foo bar"', 'foo bar'],
+                ['^%"path"^%', '%path%'],
+                ['"<|>\\" \\"\'f"', '<|>" "\'f'],
+                ['""', ''],
+                ['"with\trailingbs\\\\"', 'with\trailingbs\\'],
+            ];
         }
 
-        return array(
-            array("'\"php\" \"-v\"'", '"php" "-v"'),
-            array("'foo bar'", 'foo bar'),
-            array("'%path%'", '%path%'),
-            array("'<|>\" \"'\\''f'", '<|>" "\'f'),
-            array("''", ''),
-            array("'with\\trailingbs\\'", 'with\trailingbs\\'),
-            array("'withNonAsciiAccentLikeéÉèÈàÀöä'", 'withNonAsciiAccentLikeéÉèÈàÀöä'),
-        );
+        return [
+            ["'\"php\" \"-v\"'", '"php" "-v"'],
+            ["'foo bar'", 'foo bar'],
+            ["'%path%'", '%path%'],
+            ["'<|>\" \"'\\''f'", '<|>" "\'f'],
+            ["''", ''],
+            ["'with\\trailingbs\\'", 'with\trailingbs\\'],
+            ["'withNonAsciiAccentLikeéÉèÈàÀöä'", 'withNonAsciiAccentLikeéÉèÈàÀöä'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/PropertyAccess/PropertyAccessor.php b/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
index 2e358f458600..ac2ade04c8d8 100644
--- a/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
+++ b/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
@@ -129,13 +129,13 @@ class PropertyAccessor implements PropertyAccessorInterface
      */
     private $cacheItemPool;
 
-    private $readPropertyCache = array();
-    private $writePropertyCache = array();
-    private $propertyPathCache = array();
+    private $readPropertyCache = [];
+    private $writePropertyCache = [];
+    private $propertyPathCache = [];
 
     private static $previousErrorHandler = false;
-    private static $errorHandler = array(__CLASS__, 'handleError');
-    private static $resultProto = array(self::VALUE => null);
+    private static $errorHandler = [__CLASS__, 'handleError'];
+    private static $resultProto = [self::VALUE => null];
 
     /**
      * Should not be used by application code. Use
@@ -159,9 +159,9 @@ public function getValue($objectOrArray, $propertyPath)
     {
         $propertyPath = $this->getPropertyPath($propertyPath);
 
-        $zval = array(
+        $zval = [
             self::VALUE => $objectOrArray,
-        );
+        ];
         $propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength(), $this->ignoreInvalidIndices);
 
         return $propertyValues[\count($propertyValues) - 1][self::VALUE];
@@ -174,10 +174,10 @@ public function setValue(&$objectOrArray, $propertyPath, $value)
     {
         $propertyPath = $this->getPropertyPath($propertyPath);
 
-        $zval = array(
+        $zval = [
             self::VALUE => $objectOrArray,
             self::REF => &$objectOrArray,
-        );
+        ];
         $propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength() - 1);
         $overwrite = true;
 
@@ -244,7 +244,7 @@ public function setValue(&$objectOrArray, $propertyPath, $value)
     /**
      * @internal
      */
-    public static function handleError($type, $message, $file, $line, $context = array())
+    public static function handleError($type, $message, $file, $line, $context = [])
     {
         if (E_RECOVERABLE_ERROR === $type) {
             self::throwInvalidArgumentException($message, debug_backtrace(false), 1);
@@ -280,9 +280,9 @@ public function isReadable($objectOrArray, $propertyPath)
         }
 
         try {
-            $zval = array(
+            $zval = [
                 self::VALUE => $objectOrArray,
-            );
+            ];
             $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength(), $this->ignoreInvalidIndices);
 
             return true;
@@ -301,9 +301,9 @@ public function isWritable($objectOrArray, $propertyPath)
         $propertyPath = $this->getPropertyPath($propertyPath);
 
         try {
-            $zval = array(
+            $zval = [
                 self::VALUE => $objectOrArray,
-            );
+            ];
             $propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength() - 1);
 
             for ($i = \count($propertyValues) - 1; 0 <= $i; --$i) {
@@ -353,7 +353,7 @@ private function readPropertiesUntil($zval, PropertyPathInterface $propertyPath,
         }
 
         // Add the root object to the list
-        $propertyValues = array($zval);
+        $propertyValues = [$zval];
 
         for ($i = 0; $i < $lastIndex; ++$i) {
             $property = $propertyPath->getElement($i);
@@ -378,10 +378,10 @@ private function readPropertiesUntil($zval, PropertyPathInterface $propertyPath,
 
                     if ($i + 1 < $propertyPath->getLength()) {
                         if (isset($zval[self::REF])) {
-                            $zval[self::VALUE][$property] = array();
+                            $zval[self::VALUE][$property] = [];
                             $zval[self::REF] = $zval[self::VALUE];
                         } else {
-                            $zval[self::VALUE] = array($property => array());
+                            $zval[self::VALUE] = [$property => []];
                         }
                     }
                 }
@@ -521,7 +521,7 @@ private function getReadAccessInfo($class, $property)
             }
         }
 
-        $access = array();
+        $access = [];
 
         $reflClass = new \ReflectionClass($class);
         $access[self::ACCESS_HAS_PROPERTY] = $reflClass->hasProperty($property);
@@ -556,7 +556,7 @@ private function getReadAccessInfo($class, $property)
             $access[self::ACCESS_TYPE] = self::ACCESS_TYPE_MAGIC;
             $access[self::ACCESS_NAME] = $getter;
         } else {
-            $methods = array($getter, $getsetter, $isser, $hasser, '__get');
+            $methods = [$getter, $getsetter, $isser, $hasser, '__get'];
             if ($this->magicCall) {
                 $methods[] = '__call';
             }
@@ -701,7 +701,7 @@ private function getWriteAccessInfo($class, $property, $value)
             }
         }
 
-        $access = array();
+        $access = [];
 
         $reflClass = new \ReflectionClass($class);
         $access[self::ACCESS_HAS_PROPERTY] = $reflClass->hasProperty($property);
@@ -786,7 +786,7 @@ private function isPropertyWritable($object, $property)
             return false;
         }
 
-        $access = $this->getWriteAccessInfo(\get_class($object), $property, array());
+        $access = $this->getWriteAccessInfo(\get_class($object), $property, []);
 
         $isWritable = self::ACCESS_TYPE_METHOD === $access[self::ACCESS_TYPE]
             || self::ACCESS_TYPE_PROPERTY === $access[self::ACCESS_TYPE]
@@ -837,7 +837,7 @@ private function findAdderAndRemover(\ReflectionClass $reflClass, array $singula
             $removeMethodFound = $this->isMethodAccessible($reflClass, $removeMethod, 1);
 
             if ($addMethodFound && $removeMethodFound) {
-                return array($addMethod, $removeMethod);
+                return [$addMethod, $removeMethod];
             }
         }
     }
diff --git a/src/Symfony/Component/PropertyAccess/PropertyPath.php b/src/Symfony/Component/PropertyAccess/PropertyPath.php
index 2897a4adfab8..cb7d4ced85fe 100644
--- a/src/Symfony/Component/PropertyAccess/PropertyPath.php
+++ b/src/Symfony/Component/PropertyAccess/PropertyPath.php
@@ -32,7 +32,7 @@ class PropertyPath implements \IteratorAggregate, PropertyPathInterface
      *
      * @var array
      */
-    private $elements = array();
+    private $elements = [];
 
     /**
      * The number of elements in the property path.
@@ -47,7 +47,7 @@ class PropertyPath implements \IteratorAggregate, PropertyPathInterface
      *
      * @var array
      */
-    private $isIndex = array();
+    private $isIndex = [];
 
     /**
      * String representation of the path.
diff --git a/src/Symfony/Component/PropertyAccess/PropertyPathBuilder.php b/src/Symfony/Component/PropertyAccess/PropertyPathBuilder.php
index e17c53c0d212..ede9e6b3a538 100644
--- a/src/Symfony/Component/PropertyAccess/PropertyPathBuilder.php
+++ b/src/Symfony/Component/PropertyAccess/PropertyPathBuilder.php
@@ -18,8 +18,8 @@
  */
 class PropertyPathBuilder
 {
-    private $elements = array();
-    private $isIndex = array();
+    private $elements = [];
+    private $isIndex = [];
 
     /**
      * Creates a new property path builder.
diff --git a/src/Symfony/Component/PropertyAccess/Tests/Fixtures/NonTraversableArrayObject.php b/src/Symfony/Component/PropertyAccess/Tests/Fixtures/NonTraversableArrayObject.php
index d2ff935851a5..4852e8d58ff9 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/Fixtures/NonTraversableArrayObject.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/Fixtures/NonTraversableArrayObject.php
@@ -21,7 +21,7 @@ class NonTraversableArrayObject implements \ArrayAccess, \Countable, \Serializab
 
     public function __construct(array $array = null)
     {
-        $this->array = $array ?: array();
+        $this->array = $array ?: [];
     }
 
     public function offsetExists($offset)
diff --git a/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TestSingularAndPluralProps.php b/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TestSingularAndPluralProps.php
index db17f3f61251..d8a8c7648314 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TestSingularAndPluralProps.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TestSingularAndPluralProps.php
@@ -21,7 +21,7 @@ class TestSingularAndPluralProps
     private $email;
 
     /** @var array */
-    private $emails = array();
+    private $emails = [];
 
     /**
      * @return string|null
@@ -60,6 +60,6 @@ public function addEmail($email)
      */
     public function removeEmail($email)
     {
-        $this->emails = array_diff($this->emails, array($email));
+        $this->emails = array_diff($this->emails, [$email]);
     }
 }
diff --git a/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TraversableArrayObject.php b/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TraversableArrayObject.php
index 6758f18fbcc4..9803a11f848f 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TraversableArrayObject.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/Fixtures/TraversableArrayObject.php
@@ -21,7 +21,7 @@ class TraversableArrayObject implements \ArrayAccess, \IteratorAggregate, \Count
 
     public function __construct(array $array = null)
     {
-        $this->array = $array ?: array();
+        $this->array = $array ?: [];
     }
 
     public function offsetExists($offset)
diff --git a/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorArrayAccessTest.php b/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorArrayAccessTest.php
index b0ed69c85953..3c007fde9343 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorArrayAccessTest.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorArrayAccessTest.php
@@ -31,10 +31,10 @@ abstract protected function getContainer(array $array);
 
     public function getValidPropertyPaths()
     {
-        return array(
-            array($this->getContainer(array('firstName' => 'Bernhard')), '[firstName]', 'Bernhard'),
-            array($this->getContainer(array('person' => $this->getContainer(array('firstName' => 'Bernhard')))), '[person][firstName]', 'Bernhard'),
-        );
+        return [
+            [$this->getContainer(['firstName' => 'Bernhard']), '[firstName]', 'Bernhard'],
+            [$this->getContainer(['person' => $this->getContainer(['firstName' => 'Bernhard'])]), '[person][firstName]', 'Bernhard'],
+        ];
     }
 
     /**
@@ -54,7 +54,7 @@ public function testGetValueFailsIfNoSuchIndex()
             ->enableExceptionOnInvalidIndex()
             ->getPropertyAccessor();
 
-        $object = $this->getContainer(array('firstName' => 'Bernhard'));
+        $object = $this->getContainer(['firstName' => 'Bernhard']);
 
         $this->propertyAccessor->getValue($object, '[lastName]');
     }
diff --git a/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorCollectionTest.php b/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorCollectionTest.php
index 8a7ab1042b32..1aee259a76c8 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorCollectionTest.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorCollectionTest.php
@@ -102,9 +102,9 @@ abstract class PropertyAccessorCollectionTest extends PropertyAccessorArrayAcces
 {
     public function testSetValueCallsAdderAndRemoverForCollections()
     {
-        $axesBefore = $this->getContainer(array(1 => 'second', 3 => 'fourth', 4 => 'fifth'));
-        $axesMerged = $this->getContainer(array(1 => 'first', 2 => 'second', 3 => 'third'));
-        $axesAfter = $this->getContainer(array(1 => 'second', 5 => 'first', 6 => 'third'));
+        $axesBefore = $this->getContainer([1 => 'second', 3 => 'fourth', 4 => 'fifth']);
+        $axesMerged = $this->getContainer([1 => 'first', 2 => 'second', 3 => 'third']);
+        $axesAfter = $this->getContainer([1 => 'second', 5 => 'first', 6 => 'third']);
         $axesMergedCopy = \is_object($axesMerged) ? clone $axesMerged : $axesMerged;
 
         // Don't use a mock in order to test whether the collections are
@@ -123,8 +123,8 @@ public function testSetValueCallsAdderAndRemoverForNestedCollections()
     {
         $car = $this->getMockBuilder(__CLASS__.'_CompositeCar')->getMock();
         $structure = $this->getMockBuilder(__CLASS__.'_CarStructure')->getMock();
-        $axesBefore = $this->getContainer(array(1 => 'second', 3 => 'fourth'));
-        $axesAfter = $this->getContainer(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $axesBefore = $this->getContainer([1 => 'second', 3 => 'fourth']);
+        $axesAfter = $this->getContainer([0 => 'first', 1 => 'second', 2 => 'third']);
 
         $car->expects($this->any())
             ->method('getStructure')
@@ -153,8 +153,8 @@ public function testSetValueCallsAdderAndRemoverForNestedCollections()
     public function testSetValueFailsIfNoAdderNorRemoverFound()
     {
         $car = $this->getMockBuilder(__CLASS__.'_CarNoAdderAndRemover')->getMock();
-        $axesBefore = $this->getContainer(array(1 => 'second', 3 => 'fourth'));
-        $axesAfter = $this->getContainer(array(0 => 'first', 1 => 'second', 2 => 'third'));
+        $axesBefore = $this->getContainer([1 => 'second', 3 => 'fourth']);
+        $axesAfter = $this->getContainer([0 => 'first', 1 => 'second', 2 => 'third']);
 
         $car->expects($this->any())
             ->method('getAxes')
diff --git a/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php b/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php
index 894fbd5c0df0..9219d7167b3d 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php
@@ -40,47 +40,47 @@ protected function setUp()
 
     public function getPathsWithUnexpectedType()
     {
-        return array(
-            array('', 'foobar'),
-            array('foo', 'foobar'),
-            array(null, 'foobar'),
-            array(123, 'foobar'),
-            array((object) array('prop' => null), 'prop.foobar'),
-            array((object) array('prop' => (object) array('subProp' => null)), 'prop.subProp.foobar'),
-            array(array('index' => null), '[index][foobar]'),
-            array(array('index' => array('subIndex' => null)), '[index][subIndex][foobar]'),
-        );
+        return [
+            ['', 'foobar'],
+            ['foo', 'foobar'],
+            [null, 'foobar'],
+            [123, 'foobar'],
+            [(object) ['prop' => null], 'prop.foobar'],
+            [(object) ['prop' => (object) ['subProp' => null]], 'prop.subProp.foobar'],
+            [['index' => null], '[index][foobar]'],
+            [['index' => ['subIndex' => null]], '[index][subIndex][foobar]'],
+        ];
     }
 
     public function getPathsWithMissingProperty()
     {
-        return array(
-            array((object) array('firstName' => 'Bernhard'), 'lastName'),
-            array((object) array('property' => (object) array('firstName' => 'Bernhard')), 'property.lastName'),
-            array(array('index' => (object) array('firstName' => 'Bernhard')), '[index].lastName'),
-            array(new TestClass('Bernhard'), 'protectedProperty'),
-            array(new TestClass('Bernhard'), 'privateProperty'),
-            array(new TestClass('Bernhard'), 'protectedAccessor'),
-            array(new TestClass('Bernhard'), 'protectedIsAccessor'),
-            array(new TestClass('Bernhard'), 'protectedHasAccessor'),
-            array(new TestClass('Bernhard'), 'privateAccessor'),
-            array(new TestClass('Bernhard'), 'privateIsAccessor'),
-            array(new TestClass('Bernhard'), 'privateHasAccessor'),
+        return [
+            [(object) ['firstName' => 'Bernhard'], 'lastName'],
+            [(object) ['property' => (object) ['firstName' => 'Bernhard']], 'property.lastName'],
+            [['index' => (object) ['firstName' => 'Bernhard']], '[index].lastName'],
+            [new TestClass('Bernhard'), 'protectedProperty'],
+            [new TestClass('Bernhard'), 'privateProperty'],
+            [new TestClass('Bernhard'), 'protectedAccessor'],
+            [new TestClass('Bernhard'), 'protectedIsAccessor'],
+            [new TestClass('Bernhard'), 'protectedHasAccessor'],
+            [new TestClass('Bernhard'), 'privateAccessor'],
+            [new TestClass('Bernhard'), 'privateIsAccessor'],
+            [new TestClass('Bernhard'), 'privateHasAccessor'],
 
             // Properties are not camelized
-            array(new TestClass('Bernhard'), 'public_property'),
-        );
+            [new TestClass('Bernhard'), 'public_property'],
+        ];
     }
 
     public function getPathsWithMissingIndex()
     {
-        return array(
-            array(array('firstName' => 'Bernhard'), '[lastName]'),
-            array(array(), '[index][lastName]'),
-            array(array('index' => array()), '[index][lastName]'),
-            array(array('index' => array('firstName' => 'Bernhard')), '[index][lastName]'),
-            array((object) array('property' => array('firstName' => 'Bernhard')), 'property[lastName]'),
-        );
+        return [
+            [['firstName' => 'Bernhard'], '[lastName]'],
+            [[], '[index][lastName]'],
+            [['index' => []], '[index][lastName]'],
+            [['index' => ['firstName' => 'Bernhard']], '[index][lastName]'],
+            [(object) ['property' => ['firstName' => 'Bernhard']], 'property[lastName]'],
+        ];
     }
 
     /**
@@ -134,10 +134,10 @@ public function testGetValueReadsMagicGet()
     public function testGetValueReadsArrayWithMissingIndexForCustomPropertyPath()
     {
         $object = new \ArrayObject();
-        $array = array('child' => array('index' => $object));
+        $array = ['child' => ['index' => $object]];
 
         $this->assertNull($this->propertyAccessor->getValue($array, '[child][index][foo][bar]'));
-        $this->assertSame(array(), $object->getArrayCopy());
+        $this->assertSame([], $object->getArrayCopy());
     }
 
     // https://github.com/symfony/symfony/pull/4450
@@ -149,24 +149,24 @@ public function testGetValueReadsMagicGetThatReturnsConstant()
     public function testGetValueNotModifyObject()
     {
         $object = new \stdClass();
-        $object->firstName = array('Bernhard');
+        $object->firstName = ['Bernhard'];
 
         $this->assertNull($this->propertyAccessor->getValue($object, 'firstName[1]'));
-        $this->assertSame(array('Bernhard'), $object->firstName);
+        $this->assertSame(['Bernhard'], $object->firstName);
     }
 
     public function testGetValueNotModifyObjectException()
     {
         $propertyAccessor = new PropertyAccessor(false, true);
         $object = new \stdClass();
-        $object->firstName = array('Bernhard');
+        $object->firstName = ['Bernhard'];
 
         try {
             $propertyAccessor->getValue($object, 'firstName[1]');
         } catch (NoSuchIndexException $e) {
         }
 
-        $this->assertSame(array('Bernhard'), $object->firstName);
+        $this->assertSame(['Bernhard'], $object->firstName);
     }
 
     /**
@@ -289,7 +289,7 @@ public function testSetValueUpdatesMagicCallIfEnabled()
 
         $this->propertyAccessor->setValue($author, 'magicCallProperty', 'Updated');
 
-        $this->assertEquals('Updated', $author->__call('getMagicCallProperty', array()));
+        $this->assertEquals('Updated', $author->__call('getMagicCallProperty', []));
     }
 
     /**
@@ -305,7 +305,7 @@ public function testSetValueThrowsExceptionIfNotObjectOrArray($objectOrArray, $p
     public function testGetValueWhenArrayValueIsNull()
     {
         $this->propertyAccessor = new PropertyAccessor(false, true);
-        $this->assertNull($this->propertyAccessor->getValue(array('index' => array('nullable' => null)), '[index][nullable]'));
+        $this->assertNull($this->propertyAccessor->getValue(['index' => ['nullable' => null]], '[index][nullable]'));
     }
 
     /**
@@ -432,47 +432,47 @@ public function testIsWritableReturnsFalseIfNotObjectOrArray($objectOrArray, $pa
 
     public function getValidPropertyPaths()
     {
-        return array(
-            array(array('Bernhard', 'Schussek'), '[0]', 'Bernhard'),
-            array(array('Bernhard', 'Schussek'), '[1]', 'Schussek'),
-            array(array('firstName' => 'Bernhard'), '[firstName]', 'Bernhard'),
-            array(array('index' => array('firstName' => 'Bernhard')), '[index][firstName]', 'Bernhard'),
-            array((object) array('firstName' => 'Bernhard'), 'firstName', 'Bernhard'),
-            array((object) array('property' => array('firstName' => 'Bernhard')), 'property[firstName]', 'Bernhard'),
-            array(array('index' => (object) array('firstName' => 'Bernhard')), '[index].firstName', 'Bernhard'),
-            array((object) array('property' => (object) array('firstName' => 'Bernhard')), 'property.firstName', 'Bernhard'),
+        return [
+            [['Bernhard', 'Schussek'], '[0]', 'Bernhard'],
+            [['Bernhard', 'Schussek'], '[1]', 'Schussek'],
+            [['firstName' => 'Bernhard'], '[firstName]', 'Bernhard'],
+            [['index' => ['firstName' => 'Bernhard']], '[index][firstName]', 'Bernhard'],
+            [(object) ['firstName' => 'Bernhard'], 'firstName', 'Bernhard'],
+            [(object) ['property' => ['firstName' => 'Bernhard']], 'property[firstName]', 'Bernhard'],
+            [['index' => (object) ['firstName' => 'Bernhard']], '[index].firstName', 'Bernhard'],
+            [(object) ['property' => (object) ['firstName' => 'Bernhard']], 'property.firstName', 'Bernhard'],
 
             // Accessor methods
-            array(new TestClass('Bernhard'), 'publicProperty', 'Bernhard'),
-            array(new TestClass('Bernhard'), 'publicAccessor', 'Bernhard'),
-            array(new TestClass('Bernhard'), 'publicAccessorWithDefaultValue', 'Bernhard'),
-            array(new TestClass('Bernhard'), 'publicAccessorWithRequiredAndDefaultValue', 'Bernhard'),
-            array(new TestClass('Bernhard'), 'publicIsAccessor', 'Bernhard'),
-            array(new TestClass('Bernhard'), 'publicHasAccessor', 'Bernhard'),
-            array(new TestClass('Bernhard'), 'publicGetSetter', 'Bernhard'),
+            [new TestClass('Bernhard'), 'publicProperty', 'Bernhard'],
+            [new TestClass('Bernhard'), 'publicAccessor', 'Bernhard'],
+            [new TestClass('Bernhard'), 'publicAccessorWithDefaultValue', 'Bernhard'],
+            [new TestClass('Bernhard'), 'publicAccessorWithRequiredAndDefaultValue', 'Bernhard'],
+            [new TestClass('Bernhard'), 'publicIsAccessor', 'Bernhard'],
+            [new TestClass('Bernhard'), 'publicHasAccessor', 'Bernhard'],
+            [new TestClass('Bernhard'), 'publicGetSetter', 'Bernhard'],
 
             // Methods are camelized
-            array(new TestClass('Bernhard'), 'public_accessor', 'Bernhard'),
-            array(new TestClass('Bernhard'), '_public_accessor', 'Bernhard'),
+            [new TestClass('Bernhard'), 'public_accessor', 'Bernhard'],
+            [new TestClass('Bernhard'), '_public_accessor', 'Bernhard'],
 
             // Missing indices
-            array(array('index' => array()), '[index][firstName]', null),
-            array(array('root' => array('index' => array())), '[root][index][firstName]', null),
+            [['index' => []], '[index][firstName]', null],
+            [['root' => ['index' => []]], '[root][index][firstName]', null],
 
             // Special chars
-            array(array('%!@$§.' => 'Bernhard'), '[%!@$§.]', 'Bernhard'),
-            array(array('index' => array('%!@$§.' => 'Bernhard')), '[index][%!@$§.]', 'Bernhard'),
-            array((object) array('%!@$§' => 'Bernhard'), '%!@$§', 'Bernhard'),
-            array((object) array('property' => (object) array('%!@$§' => 'Bernhard')), 'property.%!@$§', 'Bernhard'),
+            [['%!@$§.' => 'Bernhard'], '[%!@$§.]', 'Bernhard'],
+            [['index' => ['%!@$§.' => 'Bernhard']], '[index][%!@$§.]', 'Bernhard'],
+            [(object) ['%!@$§' => 'Bernhard'], '%!@$§', 'Bernhard'],
+            [(object) ['property' => (object) ['%!@$§' => 'Bernhard']], 'property.%!@$§', 'Bernhard'],
 
             // nested objects and arrays
-            array(array('foo' => new TestClass('bar')), '[foo].publicGetSetter', 'bar'),
-            array(new TestClass(array('foo' => 'bar')), 'publicGetSetter[foo]', 'bar'),
-            array(new TestClass(new TestClass('bar')), 'publicGetter.publicGetSetter', 'bar'),
-            array(new TestClass(array('foo' => ne
10000
w TestClass('bar'))), 'publicGetter[foo].publicGetSetter', 'bar'),
-            array(new TestClass(new TestClass(new TestClass('bar'))), 'publicGetter.publicGetter.publicGetSetter', 'bar'),
-            array(new TestClass(array('foo' => array('baz' => new TestClass('bar')))), 'publicGetter[foo][baz].publicGetSetter', 'bar'),
-        );
+            [['foo' => new TestClass('bar')], '[foo].publicGetSetter', 'bar'],
+            [new TestClass(['foo' => 'bar']), 'publicGetSetter[foo]', 'bar'],
+            [new TestClass(new TestClass('bar')), 'publicGetter.publicGetSetter', 'bar'],
+            [new TestClass(['foo' => new TestClass('bar')]), 'publicGetter[foo].publicGetSetter', 'bar'],
+            [new TestClass(new TestClass(new TestClass('bar'))), 'publicGetter.publicGetter.publicGetSetter', 'bar'],
+            [new TestClass(['foo' => ['baz' => new TestClass('bar')]]), 'publicGetter[foo][baz].publicGetSetter', 'bar'],
+        ];
     }
 
     public function testTicket5755()
@@ -487,20 +487,20 @@ public function testTicket5755()
     public function testSetValueDeepWithMagicGetter()
     {
         $obj = new TestClassMagicGet('foo');
-        $obj->publicProperty = array('foo' => array('bar' => 'some_value'));
+        $obj->publicProperty = ['foo' => ['bar' => 'some_value']];
         $this->propertyAccessor->setValue($obj, 'publicProperty[foo][bar]', 'Updated');
         $this->assertSame('Updated', $obj->publicProperty['foo']['bar']);
     }
 
     public function getReferenceChainObjectsForSetValue()
     {
-        return array(
-            array(array('a' => array('b' => array('c' => 'old-value'))), '[a][b][c]', 'new-value'),
-            array(new TestClassSetValue(new TestClassSetValue('old-value')), 'value.value', 'new-value'),
-            array(new TestClassSetValue(array('a' => array('b' => array('c' => new TestClassSetValue('old-value'))))), 'value[a][b][c].value', 'new-value'),
-            array(new TestClassSetValue(array('a' => array('b' => 'old-value'))), 'value[a][b]', 'new-value'),
-            array(new \ArrayIterator(array('a' => array('b' => array('c' => 'old-value')))), '[a][b][c]', 'new-value'),
-        );
+        return [
+            [['a' => ['b' => ['c' => 'old-value']]], '[a][b][c]', 'new-value'],
+            [new TestClassSetValue(new TestClassSetValue('old-value')), 'value.value', 'new-value'],
+            [new TestClassSetValue(['a' => ['b' => ['c' => new TestClassSetValue('old-value')]]]), 'value[a][b][c].value', 'new-value'],
+            [new TestClassSetValue(['a' => ['b' => 'old-value']]), 'value[a][b]', 'new-value'],
+            [new \ArrayIterator(['a' => ['b' => ['c' => 'old-value']]]), '[a][b][c]', 'new-value'],
+        ];
     }
 
     /**
@@ -515,11 +515,11 @@ public function testSetValueForReferenceChainIssue($object, $path, $value)
 
     public function getReferenceChainObjectsForIsWritable()
     {
-        return array(
-            array(new TestClassIsWritable(array('a' => array('b' => 'old-value'))), 'value[a][b]', false),
-            array(new TestClassIsWritable(new \ArrayIterator(array('a' => array('b' => 'old-value')))), 'value[a][b]', true),
-            array(new TestClassIsWritable(array('a' => array('b' => array('c' => new TestClassSetValue('old-value'))))), 'value[a][b][c].value', true),
-        );
+        return [
+            [new TestClassIsWritable(['a' => ['b' => 'old-value']]), 'value[a][b]', false],
+            [new TestClassIsWritable(new \ArrayIterator(['a' => ['b' => 'old-value']])), 'value[a][b]', true],
+            [new TestClassIsWritable(['a' => ['b' => ['c' => new TestClassSetValue('old-value')]]]), 'value[a][b][c].value', true],
+        ];
     }
 
     /**
@@ -563,12 +563,12 @@ public function testSetTypeHint()
 
     public function testArrayNotBeeingOverwritten()
     {
-        $value = array('value1' => 'foo', 'value2' => 'bar');
+        $value = ['value1' => 'foo', 'value2' => 'bar'];
         $object = new TestClass($value);
 
         $this->propertyAccessor->setValue($object, 'publicAccessor[value2]', 'baz');
         $this->assertSame('baz', $this->propertyAccessor->getValue($object, 'publicAccessor[value2]'));
-        $this->assertSame(array('value1' => 'foo', 'value2' => 'baz'), $object->getPublicAccessor());
+        $this->assertSame(['value1' => 'foo', 'value2' => 'baz'], $object->getPublicAccessor());
     }
 
     public function testCacheReadAccess()
@@ -686,7 +686,7 @@ public function testDoNotDiscardReturnTypeError()
     {
         $object = new ReturnTyped();
 
-        $this->propertyAccessor->setValue($object, 'foos', array(new \DateTime()));
+        $this->propertyAccessor->setValue($object, 'foos', [new \DateTime()]);
     }
 
     /**
@@ -717,9 +717,9 @@ public function testWriteToPluralPropertyWhileSingularOneExists()
         $object = new TestSingularAndPluralProps();
 
         $this->propertyAccessor->isWritable($object, 'emails'); //cache access info
-        $this->propertyAccessor->setValue($object, 'emails', array('test@email.com'));
+        $this->propertyAccessor->setValue($object, 'emails', ['test@email.com']);
 
-        $this->assertEquals(array('test@email.com'), $object->getEmails());
+        $this->assertEquals(['test@email.com'], $object->getEmails());
         $this->assertNull($object->getEmail());
     }
 
@@ -728,9 +728,9 @@ public function testAdderAndRemoverArePreferredOverSetter()
         $object = new TestPluralAdderRemoverAndSetter();
 
         $this->propertyAccessor->isWritable($object, 'emails'); //cache access info
-        $this->propertyAccessor->setValue($object, 'emails', array('test@email.com'));
+        $this->propertyAccessor->setValue($object, 'emails', ['test@email.com']);
 
-        $this->assertEquals(array('test@email.com'), $object->getEmails());
+        $this->assertEquals(['test@email.com'], $object->getEmails());
     }
 
     public function testAdderAndRemoverArePreferredOverSetterForSameSingularAndPlural()
@@ -738,8 +738,8 @@ public function testAdderAndRemoverArePreferredOverSetterForSameSingularAndPlura
         $object = new TestPluralAdderRemoverAndSetterSameSingularAndPlural();
 
         $this->propertyAccessor->isWritable($object, 'aircraft'); //cache access info
-        $this->propertyAccessor->setValue($object, 'aircraft', array('aeroplane'));
+        $this->propertyAccessor->setValue($object, 'aircraft', ['aeroplane']);
 
-        $this->assertEquals(array('aeroplane'), $object->getAircraft());
+        $this->assertEquals(['aeroplane'], $object->getAircraft());
     }
 }
diff --git a/src/Symfony/Component/PropertyAccess/Tests/PropertyPathBuilderTest.php b/src/Symfony/Component/PropertyAccess/Tests/PropertyPathBuilderTest.php
index 44822699a877..287b4b1f8361 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/PropertyPathBuilderTest.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/PropertyPathBuilderTest.php
@@ -204,10 +204,10 @@ public function testReplaceDoesNotAllowInvalidOffsets($offset)
 
     public function provideInvalidOffsets()
     {
-        return array(
-            array(6),
-            array(-7),
-        );
+        return [
+            [6],
+            [-7],
+        ];
     }
 
     public function testReplaceWithLengthGreaterOne()
diff --git a/src/Symfony/Component/PropertyAccess/Tests/PropertyPathTest.php b/src/Symfony/Component/PropertyAccess/Tests/PropertyPathTest.php
index 6c5c6b22a2b0..c58ebf510c8c 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/PropertyPathTest.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/PropertyPathTest.php
@@ -41,15 +41,15 @@ public function testDotCannotBePresentAtTheBeginning()
 
     public function providePathsContainingUnexpectedCharacters()
     {
-        return array(
-            array('property.'),
-            array('property.['),
-            array('property..'),
-            array('property['),
-            array('property[['),
-            array('property[.'),
-            array('property[]'),
-        );
+        return [
+            ['property.'],
+            ['property.['],
+            ['property..'],
+            ['property['],
+            ['property[['],
+            ['property[.'],
+            ['property[]'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyAccess/Tests/StringUtilTest.php b/src/Symfony/Component/PropertyAccess/Tests/StringUtilTest.php
index 86829f418087..633ee28caf05 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/StringUtilTest.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/StringUtilTest.php
@@ -23,9 +23,9 @@ public function singularifyProvider()
     {
         // This is only a stub to make sure the BC layer works
         // Actual tests are in the Symfony Inflector component
-        return array(
-            array('axes', array('ax', 'axe', 'axis')),
-        );
+        return [
+            ['axes', ['ax', 'axe', 'axis']],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyAccess/Tests/TestPluralAdderRemoverAndSetter.php b/src/Symfony/Component/PropertyAccess/Tests/TestPluralAdderRemoverAndSetter.php
index ecb3f9b4a9d3..300e48e0d406 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/TestPluralAdderRemoverAndSetter.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/TestPluralAdderRemoverAndSetter.php
@@ -13,7 +13,7 @@
 
 class TestPluralAdderRemoverAndSetter
 {
-    private $emails = array();
+    private $emails = [];
 
     public function getEmails()
     {
@@ -22,7 +22,7 @@ public function getEmails()
 
     public function setEmails(array $emails)
     {
-        $this->emails = array('foo@email.com');
+        $this->emails = ['foo@email.com'];
     }
 
     public function addEmail($email)
@@ -32,6 +32,6 @@ public function addEmail($email)
 
     public function removeEmail($email)
     {
-        $this->emails = array_diff($this->emails, array($email));
+        $this->emails = array_diff($this->emails, [$email]);
     }
 }
diff --git a/src/Symfony/Component/PropertyAccess/Tests/TestPluralAdderRemoverAndSetterSameSingularAndPlural.php b/src/Symfony/Component/PropertyAccess/Tests/TestPluralAdderRemoverAndSetterSameSingularAndPlural.php
index bb3b4f4688dc..84eb9c9e75ad 100644
--- a/src/Symfony/Component/PropertyAccess/Tests/TestPluralAdderRemoverAndSetterSameSingularAndPlural.php
+++ b/src/Symfony/Component/PropertyAccess/Tests/TestPluralAdderRemoverAndSetterSameSingularAndPlural.php
@@ -4,7 +4,7 @@
 
 class TestPluralAdderRemoverAndSetterSameSingularAndPlural
 {
-    private $aircraft = array();
+    private $aircraft = [];
 
     public function getAircraft()
     {
@@ -13,7 +13,7 @@ public function getAircraft()
 
     public function setAircraft(array $aircraft)
     {
-        $this->aircraft = array('plane');
+        $this->aircraft = ['plane'];
     }
 
     public function addAircraft($aircraft)
@@ -23,6 +23,6 @@ public function addAircraft($aircraft)
 
     public function removeAircraft($aircraft)
     {
-        $this->aircraft = array_diff($this->aircraft, array($aircraft));
+        $this->aircraft = array_diff($this->aircraft, [$aircraft]);
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
index c500d5fea8eb..7d47cd047003 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php
@@ -36,7 +36,7 @@ class PhpDocExtractor implements PropertyDescriptionExtractorInterface, Property
     /**
      * @var DocBlock[]
      */
-    private $docBlocks = array();
+    private $docBlocks = [];
 
     private $docBlockFactory;
     private $contextFactory;
@@ -68,7 +68,7 @@ public function __construct(DocBlockFactoryInterface $docBlockFactory = null, ar
     /**
      * {@inheritdoc}
      */
-    public function getShortDescription($class, $property, array $context = array())
+    public function getShortDescription($class, $property, array $context = [])
     {
         /** @var $docBlock DocBlock */
         list($docBlock) = $this->getDocBlock($class, $property);
@@ -94,7 +94,7 @@ public function getShortDescription($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getLongDescription($class, $property, array $context = array())
+    public function getLongDescription($class, $property, array $context = [])
     {
         /** @var $docBlock DocBlock */
         list($docBlock) = $this->getDocBlock($class, $property);
@@ -110,7 +110,7 @@ public function getLongDescription($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
         /** @var $docBlock DocBlock */
         list($docBlock, $source, $prefix) = $this->getDocBlock($class, $property);
@@ -132,7 +132,7 @@ public function getTypes($class, $property, array $context = array())
                 break;
         }
 
-        $types = array();
+        $types = [];
         /** @var DocBlock\Tags\Var_|DocBlock\Tags\Return_|DocBlock\Tags\Param $tag */
         foreach ($docBlock->getTagsByName($tag) as $tag) {
             if ($tag && null !== $tag->getType()) {
@@ -148,7 +148,7 @@ public function getTypes($class, $property, array $context = array())
             return $types;
         }
 
-        return array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), $types[0]));
+        return [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), $types[0])];
     }
 
     /**
@@ -171,19 +171,19 @@ private function getDocBlock($class, $property)
 
         switch (true) {
             case $docBlock = $this->getDocBlockFromProperty($class, $property):
-                $data = array($docBlock, self::PROPERTY, null);
+                $data = [$docBlock, self::PROPERTY, null];
                 break;
 
             case list($docBlock) = $this->getDocBlockFromMethod($class, $ucFirstProperty, self::ACCESSOR):
-                $data = array($docBlock, self::ACCESSOR, null);
+                $data = [$docBlock, self::ACCESSOR, null];
                 break;
 
             case list($docBlock, $prefix) = $this->getDocBlockFromMethod($class, $ucFirstProperty, self::MUTATOR):
-                $data = array($docBlock, self::MUTATOR, $prefix);
+                $data = [$docBlock, self::MUTATOR, $prefix];
                 break;
 
             default:
-                $data = array(null, null, null);
+                $data = [null, null, null];
         }
 
         return $this->docBlocks[$propertyHash] = $data;
@@ -252,7 +252,7 @@ private function getDocBlockFromMethod($class, $ucFirstProperty, $type)
         }
 
         try {
-            return array($this->docBlockFactory->create($reflectionMethod, $this->contextFactory->createFromReflector($reflectionMethod)), $prefix);
+            return [$this->docBlockFactory->create($reflectionMethod, $this->contextFactory->createFromReflector($reflectionMethod)), $prefix];
         } catch (\InvalidArgumentException $e) {
             return null;
         }
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
index 41c947d8e3a3..513549219f21 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
@@ -29,17 +29,17 @@ class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTyp
     /**
      * @internal
      */
-    public static $defaultMutatorPrefixes = array('add', 'remove', 'set');
+    public static $defaultMutatorPrefixes = ['add', 'remove', 'set'];
 
     /**
      * @internal
      */
-    public static $defaultAccessorPrefixes = array('is', 'can', 'get');
+    public static $defaultAccessorPrefixes = ['is', 'can', 'get'];
 
     /**
      * @internal
      */
-    public static $defaultArrayMutatorPrefixes = array('add', 'remove');
+    public static $defaultArrayMutatorPrefixes = ['add', 'remove'];
 
     /**
      * @var bool
@@ -77,7 +77,7 @@ public function __construct(array $mutatorPrefixes = null, array $accessorPrefix
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
         try {
             $reflectionClass = new \ReflectionClass($class);
@@ -87,7 +87,7 @@ public function getProperties($class, array $context = array())
 
         $reflectionProperties = $reflectionClass->getProperties();
 
-        $properties = array();
+        $properties = [];
         foreach ($reflectionProperties as $reflectionProperty) {
             if ($reflectionProperty->isPublic()) {
                 $properties[$reflectionProperty->name] = $reflectionProperty->name;
@@ -115,7 +115,7 @@ public function getProperties($class, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
         if ($fromMutator = $this->extractFromMutator($class, $property)) {
             return $fromMutator;
@@ -129,7 +129,7 @@ public function getTypes($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
         if ($this->isPublicProperty($class, $property)) {
             return true;
@@ -143,7 +143,7 @@ public function isReadable($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
         if ($this->isPublicProperty($class, $property)) {
             return true;
@@ -198,7 +198,7 @@ private function extractFromMutator($class, $property)
             $type = new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), $type);
         }
 
-        return array($type);
+        return [$type];
     }
 
     /**
@@ -217,11 +217,11 @@ private function extractFromAccessor($class, $property)
         }
 
         if ($this->supportsParameterType && $reflectionType = $reflectionMethod->getReturnType()) {
-            return array($this->extractFromReflectionType($reflectionType, $reflectionMethod));
+            return [$this->extractFromReflectionType($reflectionType, $reflectionMethod)];
         }
 
-        if (\in_array($prefix, array('is', 'can'))) {
-            return array(new Type(Type::BUILTIN_TYPE_BOOL));
+        if (\in_array($prefix, ['is', 'can'])) {
+            return [new Type(Type::BUILTIN_TYPE_BOOL)];
         }
     }
 
@@ -304,7 +304,7 @@ private function getAccessorMethod($class, $property)
                 }
 
                 if (0 === $reflectionMethod->getNumberOfRequiredParameters()) {
-                    return array($reflectionMethod, $prefix);
+                    return [$reflectionMethod, $prefix];
                 }
             } catch (\ReflectionException $e) {
                 // Return null if the property doesn't exist
@@ -329,7 +329,7 @@ private function getMutatorMethod($class, $property)
         $ucSingulars = (array) Inflector::singularize($ucProperty);
 
         foreach ($this->mutatorPrefixes as $prefix) {
-            $names = array($ucProperty);
+            $names = [$ucProperty];
             if (\in_array($prefix, $this->arrayMutatorPrefixes)) {
                 $names = array_merge($names, $ucSingulars);
             }
@@ -343,7 +343,7 @@ private function getMutatorMethod($class, $property)
 
                     // Parameter can be optional to allow things like: method(array $foo = null)
                     if ($reflectionMethod->getNumberOfParameters() >= 1) {
-                        return array($reflectionMethod, $prefix);
+                        return [$reflectionMethod, $prefix];
                     }
                 } catch (\ReflectionException $e) {
                     // Try the next prefix if the method doesn't exist
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/SerializerExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/SerializerExtractor.php
index 59acd4de2bbf..12955b6ca0dd 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/SerializerExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/SerializerExtractor.php
@@ -33,7 +33,7 @@ public function __construct(ClassMetadataFactoryInterface $classMetadataFactory)
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
         if (!isset($context['serializer_groups']) || !\is_array($context['serializer_groups'])) {
             return;
@@ -43,7 +43,7 @@ public function getProperties($class, array $context = array())
             return;
         }
 
-        $properties = array();
+        $properties = [];
         $serializerClassMetadata = $this->classMetadataFactory->getMetadataFor($class);
 
         foreach ($serializerClassMetadata->getAttributesMetadata() as $serializerAttributeMetadata) {
diff --git a/src/Symfony/Component/PropertyInfo/PropertyAccessExtractorInterface.php b/src/Symfony/Component/PropertyInfo/PropertyAccessExtractorInterface.php
index ecf44d9d656c..49d5afb032c4 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyAccessExtractorInterface.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyAccessExtractorInterface.php
@@ -27,7 +27,7 @@ interface PropertyAccessExtractorInterface
      *
      * @return bool|null
      */
-    public function isReadable($class, $property, array $context = array());
+    public function isReadable($class, $property, array $context = []);
 
     /**
      * Is the property writable?
@@ -38,5 +38,5 @@ public function isReadable($class, $property, array $context = array());
      *
      * @return bool|null
      */
-    public function isWritable($class, $property, array $context = array());
+    public function isWritable($class, $property, array $context = []);
 }
diff --git a/src/Symfony/Component/PropertyInfo/PropertyDescriptionExtractorInterface.php b/src/Symfony/Component/PropertyInfo/PropertyDescriptionExtractorInterface.php
index 3f400a8fa53e..385e772b9f09 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyDescriptionExtractorInterface.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyDescriptionExtractorInterface.php
@@ -27,7 +27,7 @@ interface PropertyDescriptionExtractorInterface
      *
      * @return string|null
      */
-    public function getShortDescription($class, $property, array $context = array());
+    public function getShortDescription($class, $property, array $context = []);
 
     /**
      * Gets the long description of the property.
@@ -38,5 +38,5 @@ public function getShortDescription($class, $property, array $context = array())
      *
      * @return string|null
      */
-    public function getLongDescription($class, $property, array $context = array());
+    public function getLongDescription($class, $property, array $context = []);
 }
diff --git a/src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php b/src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php
index 52e94b8162e0..702de4505ecc 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php
@@ -24,7 +24,7 @@ class PropertyInfoCacheExtractor implements PropertyInfoExtractorInterface
 {
     private $propertyInfoExtractor;
     private $cacheItemPool;
-    private $arrayCache = array();
+    private $arrayCache = [];
 
     public function __construct(PropertyInfoExtractorInterface $propertyInfoExtractor, CacheItemPoolInterface $cacheItemPool)
     {
@@ -35,49 +35,49 @@ public function __construct(PropertyInfoExtractorInterface $propertyInfoExtracto
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
-        return $this->extract('isReadable', array($class, $property, $context));
+        return $this->extract('isReadable', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
-        return $this->extract('isWritable', array($class, $property, $context));
+        return $this->extract('isWritable', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getShortDescription($class, $property, array $context = array())
+    public function getShortDescription($class, $property, array $context = [])
     {
-        return $this->extract('getShortDescription', array($class, $property, $context));
+        return $this->extract('getShortDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getLongDescription($class, $property, array $context = array())
+    public function getLongDescription($class, $property, array $context = [])
     {
-        return $this->extract('getLongDescription', array($class, $property, $context));
+        return $this->extract('getLongDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
-        return $this->extract('getProperties', array($class, $context));
+        return $this->extract('getProperties', [$class, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
-        return $this->extract('getTypes', array($class, $property, $context));
+        return $this->extract('getTypes', [$class, $property, $context]);
     }
 
     /**
@@ -94,7 +94,7 @@ private function extract($method, array $arguments)
             $serializedArguments = serialize($arguments);
         } catch (\Exception $exception) {
             // If arguments are not serializable, skip the cache
-            return \call_user_func_array(array($this->propertyInfoExtractor, $method), $arguments);
+            return \call_user_func_array([$this->propertyInfoExtractor, $method], $arguments);
         }
 
         // Calling rawurlencode escapes special characters not allowed in PSR-6's keys
@@ -110,7 +110,7 @@ private function extract($method, array $arguments)
             return $this->arrayCache[$key] = $item->get();
         }
 
-        $value = \call_user_func_array(array($this->propertyInfoExtractor, $method), $arguments);
+        $value = \call_user_func_array([$this->propertyInfoExtractor, $method], $arguments);
         $item->set($value);
         $this->cacheItemPool->save($item);
 
diff --git a/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php b/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
index 53881fb71aa3..58cea0880b8d 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
@@ -31,7 +31,7 @@ class PropertyInfoExtractor implements PropertyInfoExtractorInterface
      * @param iterable|PropertyDescriptionExtractorInterface[] $descriptionExtractors
      * @param iterable|PropertyAccessExtractorInterface[]      $accessExtractors
      */
-    public function __construct($listExtractors = array(), $typeExtractors = array(), $descriptionExtractors = array(), $accessExtractors = array())
+    public function __construct($listExtractors = [], $typeExtractors = [], $descriptionExtractors = [], $accessExtractors = [])
     {
         $this->listExtractors = $listExtractors;
         $this->typeExtractors = $typeExtractors;
@@ -42,49 +42,49 @@ public function __construct($listExtractors = array(), $typeExtractors = array()
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
-        return $this->extract($this->listExtractors, 'getProperties', array($class, $context));
+        return $this->extract($this->listExtractors, 'getProperties', [$class, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getShortDescription($class, $property, array $context = array())
+    public function getShortDescription($class, $property, array $context = [])
     {
-        return $this->extract($this->descriptionExtractors, 'getShortDescription', array($class, $property, $context));
+        return $this->extract($this->descriptionExtractors, 'getShortDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getLongDescription($class, $property, array $context = array())
+    public function getLongDescription($class, $property, array $context = [])
     {
-        return $this->extract($this->descriptionExtractors, 'getLongDescription', array($class, $property, $context));
+        return $this->extract($this->descriptionExtractors, 'getLongDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
-        return $this->extract($this->typeExtractors, 'getTypes', array($class, $property, $context));
+        return $this->extract($this->typeExtractors, 'getTypes', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
-        return $this->extract($this->accessExtractors, 'isReadable', array($class, $property, $context));
+        return $this->extract($this->accessExtractors, 'isReadable', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
-        return $this->extract($this->accessExtractors, 'isWritable', array($class, $property, $context));
+        return $this->extract($this->accessExtractors, 'isWritable', [$class, $property, $context]);
     }
 
     /**
@@ -99,7 +99,7 @@ public function isWritable($class, $property, array $context = array())
     private function extract($extractors, $method, array $arguments)
     {
         foreach ($extractors as $extractor) {
-            $value = \call_user_func_array(array($extractor, $method), $arguments);
+            $value = \call_user_func_array([$extractor, $method], $arguments);
             if (null !== $value) {
                 return $value;
             }
diff --git a/src/Symfony/Component/PropertyInfo/PropertyListExtractorInterface.php b/src/Symfony/Component/PropertyInfo/PropertyListExtractorInterface.php
index 1faae33d0253..2c831731cf69 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyListExtractorInterface.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyListExtractorInterface.php
@@ -26,5 +26,5 @@ interface PropertyListExtractorInterface
      *
      * @return string[]|null
      */
-    public function getProperties($class, array $context = array());
+    public function getProperties($class, array $context = []);
 }
diff --git a/src/Symfony/Component/PropertyInfo/PropertyTypeExtractorInterface.php b/src/Symfony/Component/PropertyInfo/PropertyTypeExtractorInterface.php
index 8aa08b4e85e5..c970530f2e93 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyTypeExtractorInterface.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyTypeExtractorInterface.php
@@ -27,5 +27,5 @@ interface PropertyTypeExtractorInterface
      *
      * @return Type[]|null
      */
-    public function getTypes($class, $property, array $context = array());
+    public function getTypes($class, $property, array $context = []);
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/AbstractPropertyInfoExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/AbstractPropertyInfoExtractorTest.php
index 5b729c79e1e1..f0897d71c716 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/AbstractPropertyInfoExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/AbstractPropertyInfoExtractorTest.php
@@ -29,7 +29,7 @@ class AbstractPropertyInfoExtractorTest extends TestCase
 
     protected function setUp()
     {
-        $extractors = array(new NullExtractor(), new DummyExtractor());
+        $extractors = [new NullExtractor(), new DummyExtractor()];
         $this->propertyInfo = new PropertyInfoExtractor($extractors, $extractors, $extractors, $extractors);
     }
 
@@ -43,31 +43,31 @@ public function testInstanceOf()
 
     public function testGetShortDescription()
     {
-        $this->assertSame('short', $this->propertyInfo->getShortDescription('Foo', 'bar', array()));
+        $this->assertSame('short', $this->propertyInfo->getShortDescription('Foo', 'bar', []));
     }
 
     public function testGetLongDescription()
     {
-        $this->assertSame('long', $this->propertyInfo->getLongDescription('Foo', 'bar', array()));
+        $this->assertSame('long', $this->propertyInfo->getLongDescription('Foo', 'bar', []));
     }
 
     public function testGetTypes()
     {
-        $this->assertEquals(array(new Type(Type::BUILTIN_TYPE_INT)), $this->propertyInfo->getTypes('Foo', 'bar', array()));
+        $this->assertEquals([new Type(Type::BUILTIN_TYPE_INT)], $this->propertyInfo->getTypes('Foo', 'bar', []));
     }
 
     public function testIsReadable()
     {
-        $this->assertTrue($this->propertyInfo->isReadable('Foo', 'bar', array()));
+        $this->assertTrue($this->propertyInfo->isReadable('Foo', 'bar', []));
     }
 
     public function testIsWritable()
     {
-        $this->assertTrue($this->propertyInfo->isWritable('Foo', 'bar', array()));
+        $this->assertTrue($this->propertyInfo->isWritable('Foo', 'bar', []));
     }
 
     public function testGetProperties()
     {
-        $this->assertEquals(array('a', 'b'), $this->propertyInfo->getProperties('Foo'));
+        $this->assertEquals(['a', 'b'], $this->propertyInfo->getProperties('Foo'));
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/DependencyInjection/PropertyInfoPassTest.php b/src/Symfony/Component/PropertyInfo/Tests/DependencyInjection/PropertyInfoPassTest.php
index 031e34af9745..02cc10e83343 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/DependencyInjection/PropertyInfoPassTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/DependencyInjection/PropertyInfoPassTest.php
@@ -26,44 +26,44 @@ public function testServicesAreOrderedAccordingToPriority($index, $tag)
     {
         $container = new ContainerBuilder();
 
-        $definition = $container->register('property_info')->setArguments(array(null, null, null, null));
-        $container->register('n2')->addTag($tag, array('priority' => 100));
-        $container->register('n1')->addTag($tag, array('priority' => 200));
+        $definition = $container->register('property_info')->setArguments([null, null, null, null]);
+        $container->register('n2')->addTag($tag, ['priority' => 100]);
+        $container->register('n1')->addTag($tag, ['priority' => 200]);
         $container->register('n3')->addTag($tag);
 
         $propertyInfoPass = new PropertyInfoPass();
         $propertyInfoPass->process($container);
 
-        $expected = new IteratorArgument(array(
+        $expected = new IteratorArgument([
             new Reference('n1'),
             new Reference('n2'),
             new Reference('n3'),
-        ));
+        ]);
         $this->assertEquals($expected, $definition->getArgument($index));
     }
 
     public function provideTags()
     {
-        return array(
-            array(0, 'property_info.list_extractor'),
-            array(1, 'property_info.type_extractor'),
-            array(2, 'property_info.description_extractor'),
-            array(3, 'property_info.access_extractor'),
-        );
+        return [
+            [0, 'property_info.list_extractor'],
+            [1, 'property_info.type_extractor'],
+            [2, 'property_info.description_extractor'],
+            [3, 'property_info.access_extractor'],
+        ];
     }
 
     public function testReturningEmptyArrayWhenNoService()
     {
         $container = new ContainerBuilder();
         $propertyInfoExtractorDefinition = $container->register('property_info')
-            ->setArguments(array(array(), array(), array(), array()));
+            ->setArguments([[], [], [], []]);
 
         $propertyInfoPass = new PropertyInfoPass();
         $propertyInfoPass->process($container);
 
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(0));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(1));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(2));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(3));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(0));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(1));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(2));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(3));
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
index 6766b249a77d..f4f9e9dc77e2 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
@@ -50,7 +50,7 @@ public function testParamTagTypeIsOmitted()
      */
     public function testExtractTypesWithCustomPrefixes($property, array $type = null)
     {
-        $customExtractor = new PhpDocExtractor(null, array('add', 'remove'), array('is', 'can'));
+        $customExtractor = new PhpDocExtractor(null, ['add', 'remove'], ['is', 'can']);
 
         $this->assertEquals($type, $customExtractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property));
     }
@@ -60,130 +60,130 @@ public function testExtractTypesWithCustomPrefixes($property, array $type = null
      */
     public function testExtractTypesWithNoPrefixes($property, array $type = null)
     {
-        $noPrefixExtractor = new PhpDocExtractor(null, array(), array(), array());
+        $noPrefixExtractor = new PhpDocExtractor(null, [], [], []);
 
         $this->assertEquals($type, $noPrefixExtractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property));
     }
 
     public function typesProvider()
     {
-        return array(
-            array('foo', null, 'Short description.', 'Long description.'),
-            array('bar', array(new Type(Type::BUILTIN_TYPE_STRING)), 'This is bar', null),
-            array('baz', array(new Type(Type::BUILTIN_TYPE_INT)), 'Should be used.', null),
-            array('foo2', array(new Type(Type::BUILTIN_TYPE_FLOAT)), null, null),
-            array('foo3', array(new Type(Type::BUILTIN_TYPE_CALLABLE)), null, null),
-            array('foo4', array(new Type(Type::BUILTIN_TYPE_NULL)), null, null),
-            array('foo5', null, null, null),
-            array(
+        return [
+            ['foo', null, 'Short description.', 'Long description.'],
+            ['bar', [new Type(Type::BUILTIN_TYPE_STRING)], 'This is bar', null],
+            ['baz', [new Type(Type::BUILTIN_TYPE_INT)], 'Should be used.', null],
+            ['foo2', [new Type(Type::BUILTIN_TYPE_FLOAT)], null, null],
+            ['foo3', [new Type(Type::BUILTIN_TYPE_CALLABLE)], null, null],
+            ['foo4', [new Type(Type::BUILTIN_TYPE_NULL)], null, null],
+            ['foo5', null, null, null],
+            [
                 'files',
-                array(
+                [
                     new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'SplFileInfo')),
                     new Type(Type::BUILTIN_TYPE_RESOURCE),
-                ),
+                ],
                 null,
                 null,
-            ),
-            array('bal', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')), null, null),
-            array('parent', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')), null, null),
-            array('collection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('nestedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))), null, null),
-            array('mixedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)), null, null),
-            array('a', array(new Type(Type::BUILTIN_TYPE_INT)), 'A.', null),
-            array('b', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')), 'B.', null),
-            array('c', array(new Type(Type::BUILTIN_TYPE_BOOL, true)), null, null),
-            array('d', array(new Type(Type::BUILTIN_TYPE_BOOL)), null, null),
-            array('e', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))), null, null),
-            array('f', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('g', array(new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)), 'Nullable array.', null),
-            array('h', array(new Type(Type::BUILTIN_TYPE_STRING, true)), null, null),
-            array('i', array(new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)), null, null),
-            array('j', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')), null, null),
-            array('donotexist', null, null, null),
-            array('staticGetter', null, null, null),
-            array('staticSetter', null, null, null),
-            array('emptyVar', null, null, null),
-        );
+            ],
+            ['bal', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')], null, null],
+            ['parent', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], null, null],
+            ['collection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['nestedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))], null, null],
+            ['mixedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)], null, null],
+            ['a', [new Type(Type::BUILTIN_TYPE_INT)], 'A.', null],
+            ['b', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], 'B.', null],
+            ['c', [new Type(Type::BUILTIN_TYPE_BOOL, true)], null, null],
+            ['d', [new Type(Type::BUILTIN_TYPE_BOOL)], null, null],
+            ['e', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))], null, null],
+            ['f', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['g', [new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)], 'Nullable array.', null],
+            ['h', [new Type(Type::BUILTIN_TYPE_STRING, true)], null, null],
+            ['i', [new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)], null, null],
+            ['j', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')], null, null],
+            ['donotexist', null, null, null],
+            ['staticGetter', null, null, null],
+            ['staticSetter', null, null, null],
+            ['emptyVar', null, null, null],
+        ];
     }
 
     public function typesWithCustomPrefixesProvider()
     {
-        return array(
-            array('foo', null, 'Short description.', 'Long description.'),
-            array('bar', array(new Type(Type::BUILTIN_TYPE_STRING)), 'This is bar', null),
-            array('baz', array(new Type(Type::BUILTIN_TYPE_INT)), 'Should be used.', null),
-            array('foo2', array(new Type(Type::BUILTIN_TYPE_FLOAT)), null, null),
-            array('foo3', array(new Type(Type::BUILTIN_TYPE_CALLABLE)), null, null),
-            array('foo4', array(new Type(Type::BUILTIN_TYPE_NULL)), null, null),
-            array('foo5', null, null, null),
-            array(
+        return [
+            ['foo', null, 'Short description.', 'Long description.'],
+            ['bar', [new Type(Type::BUILTIN_TYPE_STRING)], 'This is bar', null],
+            ['baz', [new Type(Type::BUILTIN_TYPE_INT)], 'Should be used.', null],
+            ['foo2', [new Type(Type::BUILTIN_TYPE_FLOAT)], null, null],
+            ['foo3', [new Type(Type::BUILTIN_TYPE_CALLABLE)], null, null],
+            ['foo4', [new Type(Type::BUILTIN_TYPE_NULL)], null, null],
+            ['foo5', null, null, null],
+            [
                 'files',
-                array(
+                [
                     new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'SplFileInfo')),
                     new Type(Type::BUILTIN_TYPE_RESOURCE),
-                ),
+                ],
                 null,
                 null,
-            ),
-            array('bal', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')), null, null),
-            array('parent', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')), null, null),
-            array('collection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('nestedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))), null, null),
-            array('mixedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)), null, null),
-            array('a', null, 'A.', null),
-            array('b', null, 'B.', null),
-            array('c', array(new Type(Type::BUILTIN_TYPE_BOOL, true)), null, null),
-            array('d', array(new Type(Type::BUILTIN_TYPE_BOOL)), null, null),
-            array('e', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))), null, null),
-            array('f', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('g', array(new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)), 'Nullable array.', null),
-            array('h', array(new Type(Type::BUILTIN_TYPE_STRING, true)), null, null),
-            array('i', array(new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)), null, null),
-            array('j', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')), null, null),
-            array('donotexist', null, null, null),
-            array('staticGetter', null, null, null),
-            array('staticSetter', null, null, null),
-        );
+            ],
+            ['bal', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')], null, null],
+            ['parent', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], null, null],
+            ['collection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['nestedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))], null, null],
+            ['mixedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)], null, null],
+            ['a', null, 'A.', null],
+            ['b', null, 'B.', null],
+            ['c', [new Type(Type::BUILTIN_TYPE_BOOL, true)], null, null],
+            ['d', [new Type(Type::BUILTIN_TYPE_BOOL)], null, null],
+            ['e', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))], null, null],
+            ['f', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['g', [new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)], 'Nullable array.', null],
+            ['h', [new Type(Type::BUILTIN_TYPE_STRING, true)], null, null],
+            ['i', [new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)], null, null],
+            ['j', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')], null, null],
+            ['donotexist', null, null, null],
+            ['staticGetter', null, null, null],
+            ['staticSetter', null, null, null],
+        ];
     }
 
     public function typesWithNoPrefixesProvider()
     {
-        return array(
-            array('foo', null, 'Short description.', 'Long description.'),
-            array('bar', array(new Type(Type::BUILTIN_TYPE_STRING)), 'This is bar', null),
-            array('baz', array(new Type(Type::BUILTIN_TYPE_INT)), 'Should be used.', null),
-            array('foo2', array(new Type(Type::BUILTIN_TYPE_FLOAT)), null, null),
-            array('foo3', array(new Type(Type::BUILTIN_TYPE_CALLABLE)), null, null),
-            array('foo4', array(new Type(Type::BUILTIN_TYPE_NULL)), null, null),
-            array('foo5', null, null, null),
-            array(
+        return [
+            ['foo', null, 'Short description.', 'Long description.'],
+            ['bar', [new Type(Type::BUILTIN_TYPE_STRING)], 'This is bar', null],
+            ['baz', [new Type(Type::BUILTIN_TYPE_INT)], 'Should be used.', null],
+            ['foo2', [new Type(Type::BUILTIN_TYPE_FLOAT)], null, null],
+            ['foo3', [new Type(Type::BUILTIN_TYPE_CALLABLE)], null, null],
+            ['foo4', [new Type(Type::BUILTIN_TYPE_NULL)], null, null],
+            ['foo5', null, null, null],
+            [
                 'files',
-                array(
+                [
                     new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'SplFileInfo')),
                     new Type(Type::BUILTIN_TYPE_RESOURCE),
-                ),
+                ],
                 null,
                 null,
-            ),
-            array('bal', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')), null, null),
-            array('parent', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')), null, null),
-            array('collection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('nestedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))), null, null),
-            array('mixedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)), null, null),
-            array('a', null, 'A.', null),
-            array('b', null, 'B.', null),
-            array('c', null, null, null),
-            array('d', null, null, null),
-            array('e', null, null, null),
-            array('f', null, null, null),
-            array('g', array(new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)), 'Nullable array.', null),
-            array('h', array(new Type(Type::BUILTIN_TYPE_STRING, true)), null, null),
-            array('i', array(new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)), null, null),
-            array('j', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')), null, null),
-            array('donotexist', null, null, null),
-            array('staticGetter', null, null, null),
-            array('staticSetter', null, null, null),
-        );
+            ],
+            ['bal', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')], null, null],
+            ['parent', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], null, null],
+            ['collection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['nestedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))], null, null],
+            ['mixedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)], null, null],
+            ['a', null, 'A.', null],
+            ['b', null, 'B.', null],
+            ['c', null, null, null],
+            ['d', null, null, null],
+            ['e', null, null, null],
+            ['f', null, null, null],
+            ['g', [new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)], 'Nullable array.', null],
+            ['h', [new Type(Type::BUILTIN_TYPE_STRING, true)], null, null],
+            ['i', [new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)], null, null],
+            ['j', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')], null, null],
+            ['donotexist', null, null, null],
+            ['staticGetter', null, null, null],
+            ['staticSetter', null, null, null],
+        ];
     }
 
     public function testReturnNullOnEmptyDocBlock()
@@ -193,17 +193,17 @@ public function testReturnNullOnEmptyDocBlock()
 
     public function dockBlockFallbackTypesProvider()
     {
-        return array(
-            'pub' => array(
-                'pub', array(new Type(Type::BUILTIN_TYPE_STRING)),
-            ),
-            'protAcc' => array(
-                'protAcc', array(new Type(Type::BUILTIN_TYPE_INT)),
-            ),
-            'protMut' => array(
-                'protMut', array(new Type(Type::BUILTIN_TYPE_BOOL)),
-            ),
-        );
+        return [
+            'pub' => [
+                'pub', [new Type(Type::BUILTIN_TYPE_STRING)],
+            ],
+            'protAcc' => [
+                'protAcc', [new Type(Type::BUILTIN_TYPE_INT)],
+            ],
+            'protMut' => [
+                'protMut', [new Type(Type::BUILTIN_TYPE_BOOL)],
+            ],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
index 24ef06239be5..0ed5390bb588 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
@@ -34,7 +34,7 @@ protected function setUp()
     public function testGetProperties()
     {
         $this->assertSame(
-            array(
+            [
                 'bal',
                 'parent',
                 'collection',
@@ -63,7 +63,7 @@ public function testGetProperties()
                 'd',
                 'e',
                 'f',
-            ),
+            ],
             $this->extractor->getProperties('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy')
         );
 
@@ -72,10 +72,10 @@ public function testGetProperties()
 
     public function testGetPropertiesWithCustomPrefixes()
     {
-        $customExtractor = new ReflectionExtractor(array('add', 'remove'), array('is', 'can'));
+        $customExtractor = new ReflectionExtractor(['add', 'remove'], ['is', 'can']);
 
         $this->assertSame(
-            array(
+            [
                 'bal',
                 'parent',
                 'collection',
@@ -98,17 +98,17 @@ public function testGetPropertiesWithCustomPrefixes()
                 'd',
                 'e',
                 'f',
-            ),
+            ],
             $customExtractor->getProperties('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy')
         );
     }
 
     public function testGetPropertiesWithNoPrefixes()
     {
-        $noPrefixExtractor = new ReflectionExtractor(array(), array(), array());
+        $noPrefixExtractor = new ReflectionExtractor([], [], []);
 
         $this->assertSame(
-            array(
+            [
                 'bal',
                 'parent',
                 'collection',
@@ -127,7 +127,7 @@ public function testGetPropertiesWithNoPrefixes()
                 'foo4',
                 'foo5',
                 'files',
-            ),
+            ],
             $noPrefixExtractor->getProperties('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy')
         );
     }
@@ -137,24 +137,24 @@ public function testGetPropertiesWithNoPrefixes()
      */
     public function testExtractors($property, array $type = null)
     {
-        $this->assertEquals($type, $this->extractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property, array()));
+        $this->assertEquals($type, $this->extractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property, []));
     }
 
     public function typesProvider()
     {
-        return array(
-            array('a', null),
-            array('b', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy'))),
-            array('c', array(new Type(Type::BUILTIN_TYPE_BOOL))),
-            array('d', array(new Type(Type::BUILTIN_TYPE_BOOL))),
-            array('e', null),
-            array('f', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')))),
-            array('donotexist', null),
-            array('staticGetter', null),
-            array('staticSetter', null),
-            array('self', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy'))),
-            array('realParent', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy'))),
-        );
+        return [
+            ['a', null],
+            ['b', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')]],
+            ['c', [new Type(Type::BUILTIN_TYPE_BOOL)]],
+            ['d', [new Type(Type::BUILTIN_TYPE_BOOL)]],
+            ['e', null],
+            ['f', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))]],
+            ['donotexist', null],
+            ['staticGetter', null],
+            ['staticSetter', null],
+            ['self', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy')]],
+            ['realParent', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')]],
+        ];
     }
 
     /**
@@ -163,19 +163,19 @@ public function typesProvider()
      */
     public function testExtractPhp7Type($property, array $type = null)
     {
-        $this->assertEquals($type, $this->extractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Php7Dummy', $property, array()));
+        $this->assertEquals($type, $this->extractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Php7Dummy', $property, []));
     }
 
     public function php7TypesProvider()
     {
-        return array(
-            array('foo', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true))),
-            array('bar', array(new Type(Type::BUILTIN_TYPE_INT))),
-            array('baz', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING)))),
-            array('buz', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\Php7Dummy'))),
-            array('biz', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'stdClass'))),
-            array('donotexist', null),
-        );
+        return [
+            ['foo', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true)]],
+            ['bar', [new Type(Type::BUILTIN_TYPE_INT)]],
+            ['baz', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))]],
+            ['buz', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\Php7Dummy')]],
+            ['biz', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'stdClass')]],
+            ['donotexist', null],
+        ];
     }
 
     /**
@@ -184,18 +184,18 @@ public function php7TypesProvider()
      */
     public function testExtractPhp71Type($property, array $type = null)
     {
-        $this->assertEquals($type, $this->extractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Php71Dummy', $property, array()));
+        $this->assertEquals($type, $this->extractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Php71Dummy', $property, []));
     }
 
     public function php71TypesProvider()
     {
-        return array(
-            array('foo', array(new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true))),
-            array('buz', array(new Type(Type::BUILTIN_TYPE_NULL))),
-            array('bar', array(new Type(Type::BUILTIN_TYPE_INT, true))),
-            array('baz', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING)))),
-            array('donotexist', null),
-        );
+        return [
+            ['foo', [new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)]],
+            ['buz', [new Type(Type::BUILTIN_TYPE_NULL)]],
+            ['bar', [new Type(Type::BUILTIN_TYPE_INT, true)]],
+            ['baz', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))]],
+            ['donotexist', null],
+        ];
     }
 
     /**
@@ -205,27 +205,27 @@ public function testIsReadable($property, $expected)
     {
         $this->assertSame(
             $expected,
-            $this->extractor->isReadable('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property, array())
+            $this->extractor->isReadable('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property, [])
         );
     }
 
     public function getReadableProperties()
     {
-        return array(
-            array('bar', false),
-            array('baz', false),
-            array('parent', true),
-            array('a', true),
-            
10000
array('b', false),
-            array('c', true),
-            array('d', true),
-            array('e', false),
-            array('f', false),
-            array('Id', true),
-            array('id', true),
-            array('Guid', true),
-            array('guid', false),
-        );
+        return [
+            ['bar', false],
+            ['baz', false],
+            ['parent', true],
+            ['a', true],
+            ['b', false],
+            ['c', true],
+            ['d', true],
+            ['e', false],
+            ['f', false],
+            ['Id', true],
+            ['id', true],
+            ['Guid', true],
+            ['guid', false],
+        ];
     }
 
     /**
@@ -235,32 +235,32 @@ public function testIsWritable($property, $expected)
     {
         $this->assertSame(
             $expected,
-            $this->extractor->isWritable('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property, array())
+            $this->extractor->isWritable('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property, [])
         );
     }
 
     public function getWritableProperties()
     {
-        return array(
-            array('bar', false),
-            array('baz', false),
-            array('parent', true),
-            array('a', false),
-            array('b', true),
-            array('c', false),
-            array('d', false),
-            array('e', true),
-            array('f', true),
-            array('Id', false),
-            array('Guid', true),
-            array('guid', false),
-        );
+        return [
+            ['bar', false],
+            ['baz', false],
+            ['parent', true],
+            ['a', false],
+            ['b', true],
+            ['c', false],
+            ['d', false],
+            ['e', true],
+            ['f', true],
+            ['Id', false],
+            ['Guid', true],
+            ['guid', false],
+        ];
     }
 
     public function testSingularize()
     {
         $this->assertTrue($this->extractor->isWritable(AdderRemoverDummy::class, 'analyses'));
         $this->assertTrue($this->extractor->isWritable(AdderRemoverDummy::class, 'feet'));
-        $this->assertEquals(array('analyses', 'feet'), $this->extractor->getProperties(AdderRemoverDummy::class));
+        $this->assertEquals(['analyses', 'feet'], $this->extractor->getProperties(AdderRemoverDummy::class));
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/SerializerExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/SerializerExtractorTest.php
index 91cdf80f8d60..791398e3f265 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/SerializerExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/SerializerExtractorTest.php
@@ -36,8 +36,8 @@ protected function setUp()
     public function testGetProperties()
     {
         $this->assertEquals(
-            array('collection'),
-            $this->extractor->getProperties('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', array('serializer_groups' => array('a')))
+            ['collection'],
+            $this->extractor->getProperties('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', ['serializer_groups' => ['a']])
         );
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/DummyExtractor.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/DummyExtractor.php
index cfabcf2a9021..cb17020a55eb 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/DummyExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/DummyExtractor.php
@@ -25,7 +25,7 @@ class DummyExtractor implements PropertyListExtractorInterface, PropertyDescript
     /**
      * {@inheritdoc}
      */
-    public function getShortDescription($class, $property, array $context = array())
+    public function getShortDescription($class, $property, array $context = [])
     {
         return 'short';
     }
@@ -33,7 +33,7 @@ public function getShortDescription($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getLongDescription($class, $property, array $context = array())
+    public function getLongDescription($class, $property, array $context = [])
     {
         return 'long';
     }
@@ -41,15 +41,15 @@ public function getLongDescription($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
-        return array(new Type(Type::BUILTIN_TYPE_INT));
+        return [new Type(Type::BUILTIN_TYPE_INT)];
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
         return true;
     }
@@ -57,7 +57,7 @@ public function isReadable($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
         return true;
     }
@@ -65,8 +65,8 @@ public function isWritable($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
-        return array('a', 'b');
+        return ['a', 'b'];
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NullExtractor.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NullExtractor.php
index 1f263bfc3cd7..c6a1785f4925 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NullExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NullExtractor.php
@@ -26,7 +26,7 @@ class NullExtractor implements PropertyListExtractorInterface, PropertyDescripti
     /**
      * {@inheritdoc}
      */
-    public function getShortDescription($class, $property, array $context = array())
+    public function getShortDescription($class, $property, array $context = [])
     {
         $this->assertIsString($class);
         $this->assertIsString($property);
@@ -35,7 +35,7 @@ public function getShortDescription($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getLongDescription($class, $property, array $context = array())
+    public function getLongDescription($class, $property, array $context = [])
     {
         $this->assertIsString($class);
         $this->assertIsString($property);
@@ -44,7 +44,7 @@ public function getLongDescription($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
         $this->assertIsString($class);
         $this->assertIsString($property);
@@ -53,7 +53,7 @@ public function getTypes($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
         $this->assertIsString($class);
         $this->assertIsString($property);
@@ -62,7 +62,7 @@ public function isReadable($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
         $this->assertIsString($class);
         $this->assertIsString($property);
@@ -71,7 +71,7 @@ public function isWritable($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
         $this->assertIsString($class);
     }
diff --git a/src/Symfony/Component/PropertyInfo/Type.php b/src/Symfony/Component/PropertyInfo/Type.php
index 53974fa52893..e408867723fc 100644
--- a/src/Symfony/Component/PropertyInfo/Type.php
+++ b/src/Symfony/Component/PropertyInfo/Type.php
@@ -36,7 +36,7 @@ class Type
      *
      * @var string[]
      */
-    public static $builtinTypes = array(
+    public static $builtinTypes = [
         self::BUILTIN_TYPE_INT,
         self::BUILTIN_TYPE_FLOAT,
         self::BUILTIN_TYPE_STRING,
@@ -47,7 +47,7 @@ class Type
         self::BUILTIN_TYPE_CALLABLE,
         self::BUILTIN_TYPE_NULL,
         self::BUILTIN_TYPE_ITERABLE,
-    );
+    ];
 
     private $builtinType;
     private $nullable;
diff --git a/src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php b/src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php
index 5031c12fc3a1..0879a0459087 100644
--- a/src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php
+++ b/src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php
@@ -32,7 +32,7 @@ final class PhpDocTypeHelper
      */
     public function getTypes(DocType $varType)
     {
-        $types = array();
+        $types = [];
         $nullable = false;
 
         if ($varType instanceof Nullable) {
@@ -53,7 +53,7 @@ public function getTypes(DocType $varType)
             return $types;
         }
 
-        $varTypes = array();
+        $varTypes = [];
         for ($typeIndex = 0; $varType->has($typeIndex); ++$typeIndex) {
             $varTypes[] = (string) $varType->get($typeIndex);
         }
@@ -155,9 +155,9 @@ private function normalizeType($docType)
     private function getPhpTypeAndClass($docType)
     {
         if (\in_array($docType, Type::$builtinTypes)) {
-            return array($docType, null);
+            return [$docType, null];
         }
 
-        return array('object', substr($docType, 1));
+        return ['object', substr($docType, 1)];
     }
 }
diff --git a/src/Symfony/Component/Routing/Annotation/Route.php b/src/Symfony/Component/Routing/Annotation/Route.php
index da47cea4e09d..338ba512dfe4 100644
--- a/src/Symfony/Component/Routing/Annotation/Route.php
+++ b/src/Symfony/Component/Routing/Annotation/Route.php
@@ -23,12 +23,12 @@ class Route
 {
     private $path;
     private $name;
-    private $requirements = array();
-    private $options = array();
-    private $defaults = array();
+    private $requirements = [];
+    private $options = [];
+    private $defaults = [];
     private $host;
-    private $methods = array();
-    private $schemes = array();
+    private $methods = [];
+    private $schemes = [];
     private $condition;
 
     /**
@@ -114,7 +114,7 @@ public function getDefaults()
 
     public function setSchemes($schemes)
     {
-        $this->schemes = \is_array($schemes) ? $schemes : array($schemes);
+        $this->schemes = \is_array($schemes) ? $schemes : [$schemes];
     }
 
     public function getSchemes()
@@ -124,7 +124,7 @@ public function getSchemes()
 
     public function setMethods($methods)
     {
-        $this->methods = \is_array($methods) ? $methods : array($methods);
+        $this->methods = \is_array($methods) ? $methods : [$methods];
     }
 
     public function getMethods()
diff --git a/src/Symfony/Component/Routing/CompiledRoute.php b/src/Symfony/Component/Routing/CompiledRoute.php
index 8ecf5153ce2f..23acc5276e5e 100644
--- a/src/Symfony/Component/Routing/CompiledRoute.php
+++ b/src/Symfony/Component/Routing/CompiledRoute.php
@@ -37,7 +37,7 @@ class CompiledRoute implements \Serializable
      * @param array       $hostVariables An array of host variables
      * @param array       $variables     An array of variables (variables defined in the path and in the host patterns)
      */
-    public function __construct($staticPrefix, $regex, array $tokens, array $pathVariables, $hostRegex = null, array $hostTokens = array(), array $hostVariables = array(), array $variables = array())
+    public function __construct($staticPrefix, $regex, array $tokens, array $pathVariables, $hostRegex = null, array $hostTokens = [], array $hostVariables = [], array $variables = [])
     {
         $this->staticPrefix = (string) $staticPrefix;
         $this->regex = $regex;
@@ -54,7 +54,7 @@ public function __construct($staticPrefix, $regex, array $tokens, array $pathVar
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             'vars' => $this->variables,
             'path_prefix' => $this->staticPrefix,
             'path_regex' => $this->regex,
@@ -63,7 +63,7 @@ public function serialize()
             'host_regex' => $this->hostRegex,
             'host_tokens' => $this->hostTokens,
             'host_vars' => $this->hostVariables,
-        ));
+        ]);
     }
 
     /**
@@ -72,7 +72,7 @@ public function serialize()
     public function unserialize($serialized)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            $data = unserialize($serialized, array('allowed_classes' => false));
+            $data = unserialize($serialized, ['allowed_classes' => false]);
         } else {
             $data = unserialize($serialized);
         }
diff --git a/src/Symfony/Component/Routing/DependencyInjection/RoutingResolverPass.php b/src/Symfony/Component/Routing/DependencyInjection/RoutingResolverPass.php
index 6e858104cf07..5bdbfb8214d5 100644
--- a/src/Symfony/Component/Routing/DependencyInjection/RoutingResolverPass.php
+++ b/src/Symfony/Component/Routing/DependencyInjection/RoutingResolverPass.php
@@ -43,7 +43,7 @@ public function process(ContainerBuilder $container)
         $definition = $container->getDefinition($this->resolverServiceId);
 
         foreach ($this->findAndSortTaggedServices($this->loaderTag, $container) as $id) {
-            $definition->addMethodCall('addLoader', array(new Reference($id)));
+            $definition->addMethodCall('addLoader', [new Reference($id)]);
         }
     }
 }
diff --git a/src/Symfony/Component/Routing/Exception/MethodNotAllowedException.php b/src/Symfony/Component/Routing/Exception/MethodNotAllowedException.php
index 712412fecec5..cf108354a68e 100644
--- a/src/Symfony/Component/Routing/Exception/MethodNotAllowedException.php
+++ b/src/Symfony/Component/Routing/Exception/MethodNotAllowedException.php
@@ -20,7 +20,7 @@
  */
 class MethodNotAllowedException extends \RuntimeException implements ExceptionInterface
 {
-    protected $allowedMethods = array();
+    protected $allowedMethods = [];
 
     public function __construct(array $allowedMethods, $message = null, $code = 0, \Exception $previous = null)
     {
diff --git a/src/Symfony/Component/Routing/Generator/Dumper/GeneratorDumperInterface.php b/src/Symfony/Component/Routing/Generator/Dumper/GeneratorDumperInterface.php
index fed347239277..096519aa1a72 100644
--- a/src/Symfony/Component/Routing/Generator/Dumper/GeneratorDumperInterface.php
+++ b/src/Symfony/Component/Routing/Generator/Dumper/GeneratorDumperInterface.php
@@ -28,7 +28,7 @@ interface GeneratorDumperInterface
      *
      * @return string Executable code
      */
-    public function dump(array $options = array());
+    public function dump(array $options = []);
 
     /**
      * Gets the routes to dump.
diff --git a/src/Symfony/Component/Routing/Generator/Dumper/PhpGeneratorDumper.php b/src/Symfony/Component/Routing/Generator/Dumper/PhpGeneratorDumper.php
index 60bdf1da3522..9fc45c58f695 100644
--- a/src/Symfony/Component/Routing/Generator/Dumper/PhpGeneratorDumper.php
+++ b/src/Symfony/Component/Routing/Generator/Dumper/PhpGeneratorDumper.php
@@ -31,12 +31,12 @@ class PhpGeneratorDumper extends GeneratorDumper
      *
      * @return string A PHP class representing the generator class
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
-        $options = array_merge(array(
+        $options = array_merge([
             'class' => 'ProjectUrlGenerator',
             'base_class' => 'Symfony\\Component\\Routing\\Generator\\UrlGenerator',
-        ), $options);
+        ], $options);
 
         return <<<EOF
 <?php
@@ -80,7 +80,7 @@ private function generateDeclaredRoutes()
         foreach ($this->getRoutes()->all() as $name => $route) {
             $compiledRoute = $route->compile();
 
-            $properties = array();
+            $properties = [];
             $properties[] = $compiledRoute->getVariables();
             $properties[] = $route->getDefaults();
             $properties[] = $route->getRequirements();
diff --git a/src/Symfony/Component/Routing/Generator/UrlGenerator.php b/src/Symfony/Component/Routing/Generator/UrlGenerator.php
index 6ed70cabdfc2..4409796ed669 100644
--- a/src/Symfony/Component/Routing/Generator/UrlGenerator.php
+++ b/src/Symfony/Component/Routing/Generator/UrlGenerator.php
@@ -45,7 +45,7 @@ class UrlGenerator implements UrlGeneratorInterface, ConfigurableRequirementsInt
      * "?" and "#" (would be interpreted wrongly as query and fragment identifier),
      * "'" and """ (are used as delimiters in HTML).
      */
-    protected $decodedChars = array(
+    protected $decodedChars = [
         // the slash can be used to designate a hierarchical structure and we want allow using it with this meaning
         // some webservers don't allow the slash in encoded form in the path for security reasons anyway
         // see http://stackoverflow.com/questions/4069002/http-400-if-2f-part-of-get-url-in-jboss
@@ -63,7 +63,7 @@ class UrlGenerator implements UrlGeneratorInterface, ConfigurableRequirementsInt
         '%21' => '!',
         '%2A' => '*',
         '%7C' => '|',
-    );
+    ];
 
     public function __construct(RouteCollection $routes, RequestContext $context, LoggerInterface $logger = null)
     {
@@ -107,7 +107,7 @@ public function isStrictRequirements()
     /**
      * {@inheritdoc}
      */
-    public function generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH)
+    public function generate($name, $parameters = [], $referenceType = self::ABSOLUTE_PATH)
     {
         if (null === $route = $this->routes->get($name)) {
             throw new RouteNotFoundException(sprintf('Unable to generate a URL for the named route "%s" as such route does not exist.', $name));
@@ -124,7 +124,7 @@ public function generate($name, $parameters = array(), $referenceType = self::AB
      * @throws InvalidParameterException           When a parameter value for a placeholder is not correct because
      *                                             it does not match the requirement
      */
-    protected function doGenerate($variables, $defaults, $requirements, $tokens, $parameters, $name, $referenceType, $hostTokens, array $requiredSchemes = array())
+    protected function doGenerate($variables, $defaults, $requirements, $tokens, $parameters, $name, $referenceType, $hostTokens, array $requiredSchemes = [])
     {
         $variables = array_flip($variables);
         $mergedParams = array_replace($defaults, $this->context->getParameters(), $parameters);
@@ -143,11 +143,11 @@ protected function doGenerate($variables, $defaults, $requirements, $tokens, $pa
                     // check requirement
                     if (null !== $this->strictRequirements && !preg_match('#^'.$token[2].'$#'.(empty($token[4]) ? '' : 'u'), $mergedParams[$token[3]])) {
                         if ($this->strictRequirements) {
-                            throw new InvalidParameterException(strtr($message, array('{parameter}' => $token[3], '{route}' => $name, '{expected}' => $token[2], '{given}' => $mergedParams[$token[3]])));
+                            throw new InvalidParameterException(strtr($message, ['{parameter}' => $token[3], '{route}' => $name, '{expected}' => $token[2], '{given}' => $mergedParams[$token[3]]]));
                         }
 
                         if ($this->logger) {
-                            $this->logger->error($message, array('parameter' => $token[3], 'route' => $name, 'expected' => $token[2], 'given' => $mergedParams[$token[3]]));
+                            $this->logger->error($message, ['parameter' => $token[3], 'route' => $name, 'expected' => $token[2], 'given' => $mergedParams[$token[3]]]);
                         }
 
                         return;
@@ -173,7 +173,7 @@ protected function doGenerate($variables, $defaults, $requirements, $tokens, $pa
         // the path segments "." and ".." are interpreted as relative reference when resolving a URI; see http://tools.ietf.org/html/rfc3986#section-3.3
         // so we need to encode them as they are not used for this purpose here
         // otherwise we would generate a URI that, when followed by a user agent (e.g. browser), does not match this route
-        $url = strtr($url, array('/../' => '/%2E%2E/', '/./' => '/%2E/'));
+        $url = strtr($url, ['/../' => '/%2E%2E/', '/./' => '/%2E/']);
         if ('/..' === substr($url, -3)) {
             $url = substr($url, 0, -2).'%2E%2E';
         } elseif ('/.' === substr($url, -2)) {
@@ -197,11 +197,11 @@ protected function doGenerate($variables, $defaults, $requirements, $tokens, $pa
                 if ('variable' === $token[0]) {
                     if (null !== $this->strictRequirements && !preg_match('#^'.$token[2].'$#i'.(empty($token[4]) ? '' : 'u'), $mergedParams[$token[3]])) {
                         if ($this->strictRequirements) {
-                            throw new InvalidParameterException(strtr($message, array('{parameter}' => $token[3], '{route}' => $name, '{expected}' => $token[2], '{given}' => $mergedParams[$token[3]])));
+                            throw new InvalidParameterException(strtr($message, ['{parameter}' => $token[3], '{route}' => $name, '{expected}' => $token[2], '{given}' => $mergedParams[$token[3]]]));
                         }
 
                         if ($this->logger) {
-                            $this->logger->error($message, array('parameter' => $token[3], 'route' => $name, 'expected' => $token[2], 'given' => $mergedParams[$token[3]]));
+                            $this->logger->error($message, ['parameter' => $token[3], 'route' => $name, 'expected' => $token[2], 'given' => $mergedParams[$token[3]]]);
                         }
 
                         return;
@@ -258,11 +258,11 @@ protected function doGenerate($variables, $defaults, $requirements, $tokens, $pa
         if ($extra && $query = http_build_query($extra, '', '&', PHP_QUERY_RFC3986)) {
             // "/" and "?" can be left decoded for better user experience, see
             // http://tools.ietf.org/html/rfc3986#section-3.4
-            $url .= '?'.strtr($query, array('%2F' => '/'));
+            $url .= '?'.strtr($query, ['%2F' => '/']);
         }
 
         if ('' !== $fragment) {
-            $url .= '#'.strtr(rawurlencode($fragment), array('%2F' => '/', '%3F' => '?'));
+            $url .= '#'.strtr(rawurlencode($fragment), ['%2F' => '/', '%3F' => '?']);
         }
 
         return $url;
diff --git a/src/Symfony/Component/Routing/Generator/UrlGeneratorInterface.php b/src/Symfony/Component/Routing/Generator/UrlGeneratorInterface.php
index d6e7938e5ba0..f7d37b2564b1 100644
--- a/src/Symfony/Component/Routing/Generator/UrlGeneratorInterface.php
+++ b/src/Symfony/Component/Routing/Generator/UrlGeneratorInterface.php
@@ -82,5 +82,5 @@ interface UrlGeneratorInterface extends RequestContextAwareInterface
      * @throws InvalidParameterException           When a parameter value for a placeholder is not correct because
      *                                             it does not match the requirement
      */
-    public function generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH);
+    public function generate($name, $parameters = [], $referenceType = self::ABSOLUTE_PATH);
 }
diff --git a/src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php b/src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php
index 76a120b8efd0..6a439e710acf 100644
--- a/src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php
+++ b/src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php
@@ -255,17 +255,17 @@ protected function getGlobals(\ReflectionClass $class)
 
     private function resetGlobals()
     {
-        return array(
+        return [
             'path' => '',
-            'requirements' => array(),
-            'options' => array(),
-            'defaults' => array(),
-            'schemes' => array(),
-            'methods' => array(),
+            'requirements' => [],
+            'options' => [],
+            'defaults' => [],
+            'schemes' => [],
+            'methods' => [],
             'host' => '',
             'condition' => '',
             'name' => '',
-        );
+        ];
     }
 
     protected function createRoute($path, $defaults, $requirements, $options, $host, $schemes, $methods, $condition)
diff --git a/src/Symfony/Component/Routing/Loader/AnnotationFileLoader.php b/src/Symfony/Component/Routing/Loader/AnnotationFileLoader.php
index 034a1c580c77..dfea551fa16f 100644
--- a/src/Symfony/Component/Routing/Loader/AnnotationFileLoader.php
+++ b/src/Symfony/Component/Routing/Loader/AnnotationFileLoader.php
@@ -105,7 +105,7 @@ protected function findClass($file)
 
             if (true === $namespace && T_STRING === $token[0]) {
                 $namespace = $token[1];
-                while (isset($tokens[++$i][1]) && \in_array($tokens[$i][0], array(T_NS_SEPARATOR, T_STRING))) {
+                while (isset($tokens[++$i][1]) && \in_array($tokens[$i][0], [T_NS_SEPARATOR, T_STRING])) {
                     $namespace .= $tokens[$i][1];
                 }
                 $token = $tokens[$i];
@@ -122,7 +122,7 @@ protected function findClass($file)
                     if (T_DOUBLE_COLON === $tokens[$j][0] || T_NEW === $tokens[$j][0]) {
                         $skipClassToken = true;
                         break;
-                    } elseif (!\in_array($tokens[$j][0], array(T_WHITESPACE, T_DOC_COMMENT, T_COMMENT))) {
+                    } elseif (!\in_array($tokens[$j][0], [T_WHITESPACE, T_DOC_COMMENT, T_COMMENT])) {
                         break;
                     }
                 }
diff --git a/src/Symfony/Component/Routing/Loader/Configurator/Traits/RouteTrait.php b/src/Symfony/Component/Routing/Loader/Configurator/Traits/RouteTrait.php
index 4d2e255b1407..1d019fe48f75 100644
--- a/src/Symfony/Component/Routing/Loader/Configurator/Traits/RouteTrait.php
+++ b/src/Symfony/Component/Routing/Loader/Configurator/Traits/RouteTrait.php
@@ -124,7 +124,7 @@ final public function methods(array $methods)
      */
     final public function controller($controller)
     {
-        $this->route->addDefaults(array('_controller' => $controller));
+        $this->route->addDefaults(['_controller' => $controller]);
 
         return $this;
     }
diff --git a/src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php b/src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php
index 12fc2bbe16e9..ce58dc7da44e 100644
--- a/src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php
+++ b/src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php
@@ -62,7 +62,7 @@ public function load($resource, $type = null)
             throw new \BadMethodCallException(sprintf('Method "%s" not found on "%s" when importing routing resource "%s"', $method, \get_class($loaderObject), $resource));
         }
 
-        $routeCollection = \call_user_func(array($loaderObject, $method), $this);
+        $routeCollection = \call_user_func([$loaderObject, $method], $this);
 
         if (!$routeCollection instanceof RouteCollection) {
             $type = \is_object($routeCollection) ? \get_class($routeCollection) : \gettype($routeCollection);
diff --git a/src/Symfony/Component/Routing/Loader/XmlFileLoader.php b/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
index 689245b5ac40..e56add97a34f 100644
--- a/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
@@ -149,7 +149,7 @@ protected function parseImport(RouteCollection $collection, \DOMElement $node, $
         $imported = $this->import($resource, ('' !== $type ? $type : null), false, $file);
 
         if (!\is_array($imported)) {
-            $imported = array($imported);
+            $imported = [$imported];
         }
 
         foreach ($imported as $subCollection) {
@@ -203,9 +203,9 @@ protected function loadFile($file)
      */
     private function parseConfigs(\DOMElement $node, $path)
     {
-        $defaults = array();
-        $requirements = array();
-        $options = array();
+        $defaults = [];
+        $requirements = [];
+        $options = [];
         $condition = null;
 
         foreach ($node->getElementsByTagNameNS(self::NAMESPACE_URI, '*') as $n) {
@@ -246,7 +246,7 @@ private function parseConfigs(\DOMElement $node, $path)
             $defaults['_controller'] = $controller;
         }
 
-        return array($defaults, $requirements, $options, $condition);
+        return [$defaults, $requirements, $options, $condition];
     }
 
     /**
@@ -310,7 +310,7 @@ private function parseDefaultNode(\DOMElement $node, $path)
             case 'string':
                 return trim($node->nodeValue);
             case 'list':
-                $list = array();
+                $list = [];
 
                 foreach ($node->childNodes as $element) {
                     if (!$element instanceof \DOMElement) {
@@ -326,7 +326,7 @@ private function parseDefaultNode(\DOMElement $node, $path)
 
                 return $list;
             case 'map':
-                $map = array();
+                $map = [];
 
                 foreach ($node->childNodes as $element) {
                     if (!$element instanceof \DOMElement) {
diff --git a/src/Symfony/Component/Routing/Loader/YamlFileLoader.php b/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
index d6511daac963..bc21e9cb4db7 100644
--- a/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
@@ -26,9 +26,9 @@
  */
 class YamlFileLoader extends FileLoader
 {
-    private static $availableKeys = array(
+    private static $availableKeys = [
         'resource', 'type', 'prefix', 'path', 'host', 'schemes', 'methods', 'defaults', 'requirements', 'options', 'condition', 'controller',
-    );
+    ];
     private $yamlParser;
 
     /**
@@ -102,7 +102,7 @@ public function load($file, $type = null)
      */
     public function supports($resource, $type = null)
     {
-        return \is_string($resource) && \in_array(pathinfo($resource, PATHINFO_EXTENSION), array('yml', 'yaml'), true) && (!$type || 'yaml' === $type);
+        return \is_string($resource) && \in_array(pathinfo($resource, PATHINFO_EXTENSION), ['yml', 'yaml'], true) && (!$type || 'yaml' === $type);
     }
 
     /**
@@ -115,12 +115,12 @@ public function supports($resource, $type = null)
      */
     protected function parseRoute(RouteCollection $collection, $name, array $config, $path)
     {
-        $defaults = isset($config['defaults']) ? $config['defaults'] : array();
-        $requirements = isset($config['requirements']) ? $config['requirements'] : array();
-        $options = isset($config['options']) ? $config['options'] : array();
+        $defaults = isset($config['defaults']) ? $config['defaults'] : [];
+        $requirements = isset($config['requirements']) ? $config['requirements'] : [];
+        $options = isset($config['options']) ? $config['options'] : [];
         $host = isset($config['host']) ? $config['host'] : '';
-        $schemes = isset($config['schemes']) ? $config['schemes'] : array();
-        $methods = isset($config['methods']) ? $config['methods'] : array();
+        $schemes = isset($config['schemes']) ? $config['schemes'] : [];
+        $methods = isset($config['methods']) ? $config['methods'] : [];
         $condition = isset($config['condition']) ? $config['condition'] : null;
 
         if (isset($config['controller'])) {
@@ -144,9 +144,9 @@ protected function parseImport(RouteCollection $collection, array $config, $path
     {
         $type = isset($config['type']) ? $config['type'] : null;
         $prefix = isset($config['prefix']) ? $config['prefix'] : '';
-        $defaults = isset($config['defaults']) ? $config['defaults'] : array();
-        $requirements = isset($config['requirements']) ? $config['requirements'] : array();
-        $options = isset($config['options']) ? $config['options'] : array();
+        $defaults = isset($config['defaults']) ? $config['defaults'] : [];
+        $requirements = isset($config['requirements']) ? $config['requirements'] : [];
+        $options = isset($config['options']) ? $config['options'] : [];
         $host = isset($config['host']) ? $config['host'] : null;
         $condition = isset($config['condition']) ? $config['condition'] : null;
         $schemes = isset($config['schemes']) ? $config['schemes'] : null;
@@ -161,7 +161,7 @@ protected function parseImport(RouteCollection $collection, array $config, $path
         $imported = $this->import($config['resource'], $type, false, $file);
 
         if (!\is_array($imported)) {
-            $imported = array($imported);
+            $imported = [$imported];
         }
 
         foreach ($imported as $subCollection) {
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/DumperCollection.php b/src/Symfony/Component/Routing/Matcher/Dumper/DumperCollection.php
index dd057d2ee830..ff7325b807fb 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/DumperCollection.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/DumperCollection.php
@@ -28,12 +28,12 @@ class DumperCollection implements \IteratorAggregate
     /**
      * @var DumperCollection[]|DumperRoute[]
      */
-    private $children = array();
+    private $children = [];
 
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * Returns the children routes and collections.
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/MatcherDumperInterface.php b/src/Symfony/Component/Routing/Matcher/Dumper/MatcherDumperInterface.php
index 5e7c134b9f39..2a25293aa3e5 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/MatcherDumperInterface.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/MatcherDumperInterface.php
@@ -28,7 +28,7 @@ interface MatcherDumperInterface
      *
      * @return string Executable code
      */
-    public function dump(array $options = array());
+    public function dump(array $options = []);
 
     /**
      * Gets the routes to dump.
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
index ac1f8f813598..7c1ec2a6f6b4 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
@@ -30,7 +30,7 @@ class PhpMatcherDumper extends MatcherDumper
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    private $expressionLanguageProviders = array();
+    private $expressionLanguageProviders = [];
 
     /**
      * Dumps a set of routes to a PHP class.
@@ -44,12 +44,12 @@ class PhpMatcherDumper extends MatcherDumper
      *
      * @return string A PHP class representing the matcher class
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
-        $options = array_replace(array(
+        $options = array_replace([
             'class' => 'ProjectUrlMatcher',
             'base_class' => 'Symfony\\Component\\Routing\\Matcher\\UrlMatcher',
-        ), $options);
+        ], $options);
 
         // trailing slash support is only enabled if we know how to redirect the user
         $interfaces = class_implements($options['base_class']);
@@ -230,7 +230,7 @@ private function compileRoute(Route $route, $name, $supportsRedirections, $paren
     {
         $code = '';
         $compiledRoute = $route->compile();
-        $conditions = array();
+        $conditions = [];
         $hasTrailingSlash = false;
         $matches = false;
         $hostMatches = false;
@@ -265,7 +265,7 @@ private function compileRoute(Route $route, $name, $supportsRedirections, $paren
         }
 
         if ($route->getCondition()) {
-            $conditions[] = $this->getExpressionLanguage()->compile($route->getCondition(), array('context', 'request'));
+            $conditions[] = $this->getExpressionLanguage()->compile($route->getCondition(), ['context', 'request']);
         }
 
         $conditions = implode(' && ', $conditions);
@@ -283,7 +283,7 @@ private function compileRoute(Route $route, $name, $supportsRedirections, $paren
 
         // optimize parameters array
         if ($matches || $hostMatches) {
-            $vars = array();
+            $vars = [];
             if ($hostMatches) {
                 $vars[] = '$hostMatches';
             }
@@ -298,7 +298,7 @@ private function compileRoute(Route $route, $name, $supportsRedirections, $paren
                 str_replace("\n", '', var_export($route->getDefaults(), true))
             );
         } elseif ($route->getDefaults()) {
-            $code .= sprintf("            \$ret = %s;\n", str_replace("\n", '', var_export(array_replace($route->getDefaults(), array('_route' => $name)), true)));
+            $code .= sprintf("            \$ret = %s;\n", str_replace("\n", '', var_export(array_replace($route->getDefaults(), ['_route' => $name]), true)));
         } else {
             $code .= sprintf("            \$ret = array('_route' => '%s');\n", $name);
         }
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/StaticPrefixCollection.php b/src/Symfony/Component/Routing/Matcher/Dumper/StaticPrefixCollection.php
index d1cd68ee529f..15c47051f5b6 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/StaticPrefixCollection.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/StaticPrefixCollection.php
@@ -28,7 +28,7 @@ class StaticPrefixCollection
     /**
      * @var array[]|StaticPrefixCollection[]
      */
-    private $items = array();
+    private $items = [];
 
     /**
      * @var int
@@ -68,7 +68,7 @@ public function addRoute($prefix, $route)
             // When a prefix is exactly the same as the base we move up the match start position.
             // This is needed because otherwise routes that come afterwards have higher precedence
             // than a possible regular expression, which goes against the input order sorting.
-            $this->items[] = array($prefix, $route);
+            $this->items[] = [$prefix, $route];
             $this->matchStart = \count($this->items);
 
             return;
@@ -96,7 +96,7 @@ public function addRoute($prefix, $route)
 
         // No optimised case was found, in this case we simple add the route for possible
         // grouping when new routes are added.
-        $this->items[] = array($prefix, $route);
+        $this->items[] = [$prefix, $route];
     }
 
     /**
@@ -120,7 +120,7 @@ private function groupWithItem($item, $prefix, $route)
         $child = new self($commonPrefix);
 
         if ($item instanceof self) {
-            $child->items = array($item);
+            $child->items = [$item];
         } else {
             $child->addRoute($item[0], $item[1]);
         }
diff --git a/src/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php b/src/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php
index 67805205c72c..bccc78fdee37 100644
--- a/src/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php
+++ b/src/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php
@@ -27,7 +27,7 @@ public function match($pathinfo)
         try {
             $parameters = parent::match($pathinfo);
         } catch (ResourceNotFoundException $e) {
-            if ('/' === substr($pathinfo, -1) || !\in_array($this->context->getMethod(), array('HEAD', 'GET'))) {
+            if ('/' === substr($pathinfo, -1) || !\in_array($this->context->getMethod(), ['HEAD', 'GET'])) {
                 throw $e;
             }
 
@@ -49,17 +49,17 @@ public function match($pathinfo)
     protected function handleRouteRequirements($pathinfo, $name, Route $route)
     {
         // expression condition
-        if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), array('context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)))) {
-            return array(self::REQUIREMENT_MISMATCH, null);
+        if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), ['context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)])) {
+            return [self::REQUIREMENT_MISMATCH, null];
         }
 
         // check HTTP scheme requirement
         $scheme = $this->context->getScheme();
         $schemes = $route->getSchemes();
         if ($schemes && !$route->hasScheme($scheme)) {
-            return array(self::ROUTE_MATCH, $this->redirect($pathinfo, $name, current($schemes)));
+            return [self::ROUTE_MATCH, $this->redirect($pathinfo, $name, current($schemes))];
         }
 
-        return array(self::REQUIREMENT_MATCH, null);
+        return [self::REQUIREMENT_MATCH, null];
     }
 }
diff --git a/src/Symfony/Component/Routing/Matcher/TraceableUrlMatcher.php b/src/Symfony/Component/Routing/Matcher/TraceableUrlMatcher.php
index 61cad8e692f1..3c3c4bfcf919 100644
--- a/src/Symfony/Component/Routing/Matcher/TraceableUrlMatcher.php
+++ b/src/Symfony/Component/Routing/Matcher/TraceableUrlMatcher.php
@@ -31,7 +31,7 @@ class TraceableUrlMatcher extends UrlMatcher
 
     public function getTraces($pathinfo)
     {
-        $this->traces = array();
+        $this->traces = [];
 
         try {
             $this->match($pathinfo);
@@ -57,7 +57,7 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
 
             if (!preg_match($compiledRoute->getRegex(), $pathinfo, $matches)) {
                 // does it match without any requirements?
-                $r = new Route($route->getPath(), $route->getDefaults(), array(), $route->getOptions());
+                $r = new Route($route->getPath(), $route->getDefaults(), [], $route->getOptions());
                 $cr = $r->compile();
                 if (!preg_match($cr->getRegex(), $pathinfo)) {
                     $this->addTrace(sprintf('Path "%s" does not match', $route->getPath()), self::ROUTE_DOES_NOT_MATCH, $name, $route);
@@ -66,7 +66,7 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
                 }
 
                 foreach ($route->getRequirements() as $n => $regex) {
-                    $r = new Route($route->getPath(), $route->getDefaults(), array($n => $regex), $route->getOptions());
+                    $r = new Route($route->getPath(), $route->getDefaults(), [$n => $regex], $route->getOptions());
                     $cr = $r->compile();
 
                     if (\in_array($n, $cr->getVariables()) && !preg_match($cr->getRegex(), $pathinfo)) {
@@ -80,7 +80,7 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
             }
 
             // check host requirement
-            $hostMatches = array();
+            $hostMatches = [];
             if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
                 $this->addTrace(sprintf('Host "%s" does not match the requirement ("%s")', $this->context->getHost(), $route->getHost()), self::ROUTE_ALMOST_MATCHES, $name, $route);
 
@@ -105,7 +105,7 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
 
             // check condition
             if ($condition = $route->getCondition()) {
-                if (!$this->getExpressionLanguage()->evaluate($condition, array('context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)))) {
+                if (!$this->getExpressionLanguage()->evaluate($condition, ['context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)])) {
                     $this->addTrace(sprintf('Condition "%s" does not evaluate to "true"', $condition), self::ROUTE_ALMOST_MATCHES, $name, $route);
 
                     continue;
@@ -131,11 +131,11 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
 
     private function addTrace($log, $level = self::ROUTE_DOES_NOT_MATCH, $name = null, $route = null)
     {
-        $this->traces[] = array(
+        $this->traces[] = [
             'log' => $log,
             'name' => $name,
             'level' => $level,
             'path' => null !== $route ? $route->getPath() : null,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Matcher/UrlMatcher.php b/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
index 4b6494288ec6..663ebcbefaae 100644
--- a/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
+++ b/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
@@ -33,7 +33,7 @@ class UrlMatcher implements UrlMatcherInterface, RequestMatcherInterface
     const ROUTE_MATCH = 2;
 
     protected $context;
-    protected $allow = array();
+    protected $allow = [];
     protected $routes;
     protected $request;
     protected $expressionLanguage;
@@ -41,7 +41,7 @@ class UrlMatcher implements UrlMatcherInterface, RequestMatcherInterface
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    protected $expressionLanguageProviders = array();
+    protected $expressionLanguageProviders = [];
 
     public function __construct(RouteCollection $routes, RequestContext $context)
     {
@@ -70,7 +70,7 @@ public function getContext()
      */
     public function match($pathinfo)
     {
-        $this->allow = array();
+        $this->allow = [];
 
         if ($ret = $this->matchCollection(rawurldecode($pathinfo), $this->routes)) {
             return $ret;
@@ -135,7 +135,7 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
             } elseif (!$supportsTrailingSlash || ($requiredMethods && !\in_array('GET', $requiredMethods)) || 'GET' !== $method) {
                 continue;
             } elseif ('/' === substr($staticPrefix, -1) && substr($staticPrefix, 0, -1) === $pathinfo) {
-                return $this->allow = array();
+                return $this->allow = [];
             } else {
                 continue;
             }
@@ -154,12 +154,12 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
 
             if ($hasTrailingSlash && '/' !== substr($pathinfo, -1)) {
                 if ((!$requiredMethods || \in_array('GET', $requiredMethods)) && 'GET' === $method) {
-                    return $this->allow = array();
+                    return $this->allow = [];
                 }
                 continue;
             }
 
-            $hostMatches = array();
+            $hostMatches = [];
             if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
                 continue;
             }
@@ -181,10 +181,10 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
                 }
             }
 
-            return $this->getAttributes($route, $name, array_replace($matches, $hostMatches, isset($status[1]) ? $status[1] : array()));
+            return $this->getAttributes($route, $name, array_replace($matches, $hostMatches, isset($status[1]) ? $status[1] : []));
         }
 
-        return array();
+        return [];
     }
 
     /**
@@ -219,15 +219,15 @@ protected function getAttributes(Route $route, $name, array $attributes)
     protected function handleRouteRequirements($pathinfo, $name, Route $route)
     {
         // expression condition
-        if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), array('context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)))) {
-            return array(self::REQUIREMENT_MISMATCH, null);
+        if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), ['context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)])) {
+            return [self::REQUIREMENT_MISMATCH, null];
         }
 
         // check HTTP scheme requirement
         $scheme = $this->context->getScheme();
         $status = $route->getSchemes() && !$route->hasScheme($scheme) ? self::REQUIREMENT_MISMATCH : self::REQUIREMENT_MATCH;
 
-        return array($status, null);
+        return [$status, null];
     }
 
     /**
@@ -270,9 +270,9 @@ protected function createRequest($pathinfo)
             return null;
         }
 
-        return Request::create($this->context->getScheme().'://'.$this->context->getHost().$this->context->getBaseUrl().$pathinfo, $this->context->getMethod(), $this->context->getParameters(), array(), array(), array(
+        return Request::create($this->context->getScheme().'://'.$this->context->getHost().$this->context->getBaseUrl().$pathinfo, $this->context->getMethod(), $this->context->getParameters(), [], [], [
             'SCRIPT_FILENAME' => $this->context->getBaseUrl(),
             'SCRIPT_NAME' => $this->context->getBaseUrl(),
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Routing/RequestContext.php b/src/Symfony/Component/Routing/RequestContext.php
index d62a7766ef85..df33ec2d21bb 100644
--- a/src/Symfony/Component/Routing/RequestContext.php
+++ b/src/Symfony/Component/Routing/RequestContext.php
@@ -31,7 +31,7 @@ class RequestContext
     private $httpPort;
     private $httpsPort;
     private $queryString;
-    private $parameters = array();
+    private $parameters = [];
 
     /**
      * @param string $baseUrl     The base URL
diff --git a/src/Symfony/Component/Routing/Route.php b/src/Symfony/Component/Routing/Route.php
index 46e3e5502b95..5cebf094a9cd 100644
--- a/src/Symfony/Component/Routing/Route.php
+++ b/src/Symfony/Component/Routing/Route.php
@@ -21,11 +21,11 @@ class Route implements \Serializable
 {
     private $path = '/';
     private $host = '';
-    private $schemes = array();
-    private $methods = array();
-    private $defaults = array();
-    private $requirements = array();
-    private $options = array();
+    private $schemes = [];
+    private $methods = [];
+    private $defaults = [];
+    private $requirements = [];
+    private $options = [];
     private $condition = '';
 
     /**
@@ -50,7 +50,7 @@ class Route implements \Serializable
      * @param string|string[] $methods      A required HTTP method or an array of restricted methods
      * @param string          $condition    A condition that should evaluate to true for the route to match
      */
-    public function __construct($path, array $defaults = array(), array $requirements = array(), array $options = array(), $host = '', $schemes = array(), $methods = array(), $condition = '')
+    public function __construct($path, array $defaults = [], array $requirements = [], array $options = [], $host = '', $schemes = [], $methods = [], $condition = '')
     {
         $this->setPath($path);
         $this->setDefaults($defaults);
@@ -67,7 +67,7 @@ public function __construct($path, array $defaults = array(), array $requirement
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             'path' => $this->path,
             'host' => $this->host,
             'defaults' => $this->defaults,
@@ -77,7 +77,7 @@ public function serialize()
             'methods' => $this->methods,
             'condition' => $this->condition,
             'compiled' => $this->compiled,
-        ));
+        ]);
     }
 
     /**
@@ -249,9 +249,9 @@ public function getOptions()
      */
     public function setOptions(array $options)
     {
-        $this->options = array(
+        $this->options = [
             'compiler_class' => 'Symfony\\Component\\Routing\\RouteCompiler',
-        );
+        ];
 
         return $this->addOptions($options);
     }
@@ -338,7 +338,7 @@ public function getDefaults()
      */
     public function setDefaults(array $defaults)
     {
-        $this->defaults = array();
+        $this->defaults = [];
 
         return $this->addDefaults($defaults);
     }
@@ -423,7 +423,7 @@ public function getRequirements()
      */
     public function setRequirements(array $requirements)
     {
-        $this->requirements = array();
+        $this->requirements = [];
 
         return $this->addRequirements($requirements);
     }
diff --git a/src/Symfony/Component/Routing/RouteCollection.php b/src/Symfony/Component/Routing/RouteCollection.php
index c42229af2878..feac41551308 100644
--- a/src/Symfony/Component/Routing/RouteCollection.php
+++ b/src/Symfony/Component/Routing/RouteCollection.php
@@ -28,12 +28,12 @@ class RouteCollection implements \IteratorAggregate, \Countable
     /**
      * @var Route[]
      */
-    private $routes = array();
+    private $routes = [];
 
     /**
      * @var array
      */
-    private $resources = array();
+    private $resources = [];
 
     public function __clone()
     {
@@ -138,7 +138,7 @@ public function addCollection(self $collection)
      * @param array  $defaults     An array of default values
      * @param array  $requirements An array of requirements
      */
-    public function addPrefix($prefix, array $defaults = array(), array $requirements = array())
+    public function addPrefix($prefix, array $defaults = [], array $requirements = [])
     {
         $prefix = trim(trim($prefix), '/');
 
@@ -160,7 +160,7 @@ public function addPrefix($prefix, array $defaults = array(), array $requirement
      * @param array  $defaults     An array of default values
      * @param array  $requirements An array of requirements
      */
-    public function setHost($pattern, array $defaults = array(), array $requirements = array())
+    public function setHost($pattern, array $defaults = [], array $requirements = [])
     {
         foreach ($this->routes as $route) {
             $route->setHost($pattern);
diff --git a/src/Symfony/Component/Routing/RouteCollectionBuilder.php b/src/Symfony/Component/Routing/RouteCollectionBuilder.php
index 05dcc3627f3f..800e448cf3b4 100644
--- a/src/Symfony/Component/Routing/RouteCollectionBuilder.php
+++ b/src/Symfony/Component/Routing/RouteCollectionBuilder.php
@@ -25,18 +25,18 @@ class RouteCollectionBuilder
     /**
      * @var Route[]|RouteCollectionBuilder[]
      */
-    private $routes = array();
+    private $routes = [];
 
     private $loader;
-    private $defaults = array();
+    private $defaults = [];
     private $prefix;
     private $host;
     private $condition;
-    private $requirements = array();
-    private $options = array();
+    private $requirements = [];
+    private $options = [];
     private $schemes;
     private $methods;
-    private $resources = array();
+    private $resources = [];
 
     public function __construct(LoaderInterface $loader = null)
     {
@@ -332,7 +332,7 @@ private function generateRouteName(Route $route)
         $methods = implode('_', $route->getMethods()).'_';
 
         $routeName = $methods.$route->getPath();
-        $routeName = str_replace(array('/', ':', '|', '-'), '_', $routeName);
+        $routeName = str_replace(['/', ':', '|', '-'], '_', $routeName);
         $routeName = preg_replace('/[^a-z0-9A-Z_.]+/', '', $routeName);
 
         // Collapse consecutive underscores down into a single underscore.
@@ -360,7 +360,7 @@ private function load($resource, $type = null)
         if ($this->loader->supports($resource, $type)) {
             $collections = $this->loader->load($resource, $type);
 
-            return \is_array($collections) ? $collections : array($collections);
+            return \is_array($collections) ? $collections : [$collections];
         }
 
         if (null === $resolver = $this->loader->getResolver()) {
@@ -373,6 +373,6 @@ private function load($resource, $type = null)
 
         $collections = $loader->load($resource, $type);
 
-        return \is_array($collections) ? $collections : array($collections);
+        return \is_array($collections) ? $collections : [$collections];
     }
 }
diff --git a/src/Symfony/Component/Routing/RouteCompiler.php b/src/Symfony/Component/Routing/RouteCompiler.php
index 2562c185b7d1..0eb2b6b32396 100644
--- a/src/Symfony/Component/Routing/RouteCompiler.php
+++ b/src/Symfony/Component/Routing/RouteCompiler.php
@@ -46,10 +46,10 @@ class RouteCompiler implements RouteCompilerInterface
      */
     public static function compile(Route $route)
     {
-        $hostVariables = array();
-        $variables = array();
+        $hostVariables = [];
+        $variables = [];
         $hostRegex = null;
-        $hostTokens = array();
+        $hostTokens = [];
 
         if ('' !== $host = $route->getHost()) {
             $result = self::compilePattern($route, $host, true);
@@ -94,9 +94,9 @@ public static function compile(Route $route)
 
     private static function compilePattern(Route $route, $pattern, $isHost)
     {
-        $tokens = array();
-        $variables = array();
-        $matches = array();
+        $tokens = [];
+        $variables = [];
+        $matches = [];
         $pos = 0;
         $defaultSeparator = $isHost ? '.' : '/';
         $useUtf8 = preg_match('//u', $pattern);
@@ -143,9 +143,9 @@ private static function compilePattern(Route $route, $pattern, $isHost)
             }
 
             if ($isSeparator && $precedingText !== $precedingChar) {
-                $tokens[] = array('text', substr($precedingText, 0, -\strlen($precedingChar)));
+                $tokens[] = ['text', substr($precedingText, 0, -\strlen($precedingChar))];
             } elseif (!$isSeparator && \strlen($precedingText) > 0) {
-                $tokens[] = array('text', $precedingText);
+                $tokens[] = ['text', $precedingText];
             }
 
             $regexp = $route->getRequirement($varName);
@@ -184,12 +184,12 @@ private static function compilePattern(Route $route, $pattern, $isHost)
                 }
             }
 
-            $tokens[] = array('variable', $isSeparator ? $precedingChar : '', $regexp, $varName);
+            $tokens[] = ['variable', $isSeparator ? $precedingChar : '', $regexp, $varName];
             $variables[] = $varName;
         }
 
         if ($pos < \strlen($pattern)) {
-            $tokens[] = array('text', substr($pattern, $pos));
+            $tokens[] = ['text', substr($pattern, $pos)];
         }
 
         // find the first optional token
@@ -222,12 +222,12 @@ private static function compilePattern(Route $route, $pattern, $isHost)
             }
         }
 
-        return array(
+        return [
             'staticPrefix' => self::determineStaticPrefix($route, $tokens),
             'regex' => $regexp,
             'tokens' => array_reverse($tokens),
             'variables' => $variables,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Routing/Router.php b/src/Symfony/Component/Routing/Router.php
index 3f4838ea023e..5fa85a538acc 100644
--- a/src/Symfony/Component/Routing/Router.php
+++ b/src/Symfony/Component/Routing/Router.php
@@ -66,7 +66,7 @@ class Router implements RouterInterface, RequestMatcherInterface
     /**
      * @var array
      */
-    protected $options = array();
+    protected $options = [];
 
     /**
      * @var LoggerInterface|null
@@ -81,7 +81,7 @@ class Router implements RouterInterface, RequestMatcherInterface
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    private $expressionLanguageProviders = array();
+    private $expressionLanguageProviders = [];
 
     /**
      * @param LoaderInterface $loader   A LoaderInterface instance
@@ -90,7 +90,7 @@ class Router implements RouterInterface, RequestMatcherInterface
      * @param RequestContext  $context  The context
      * @param LoggerInterface $logger   A logger instance
      */
-    public function __construct(LoaderInterface $loader, $resource, array $options = array(), RequestContext $context = null, LoggerInterface $logger = null)
+    public function __construct(LoaderInterface $loader, $resource, array $options = [], RequestContext $context = null, LoggerInterface $logger = null)
     {
         $this->loader = $loader;
         $this->resource = $resource;
@@ -124,7 +124,7 @@ public function __construct(LoaderInterface $loader, $resource, array $options =
      */
     public function setOptions(array $options)
     {
-        $this->options = array(
+        $this->options = [
             'cache_dir' => null,
             'debug' => false,
             'generator_class' => 'Symfony\\Component\\Routing\\Generator\\UrlGenerator',
@@ -137,10 +137,10 @@ public function setOptions(array $options)
             'matcher_cache_class' => 'ProjectUrlMatcher',
             'resource_type' => null,
             'strict_requirements' => true,
-        );
+        ];
 
         // check option names and live merge, if errors are encountered Exception will be thrown
-        $invalid = array();
+        $invalid = [];
         foreach ($options as $key => $value) {
             if (array_key_exists($key, $this->options)) {
                 $this->options[$key] = $value;
@@ -235,7 +235,7 @@ public function setConfigCacheFactory(ConfigCacheFactoryInterface $configCacheFa
     /**
      * {@inheritdoc}
      */
-    public function generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH)
+    public function generate($name, $parameters = [], $referenceType = self::ABSOLUTE_PATH)
     {
         return $this->getGenerator()->generate($name, $parameters, $referenceType);
     }
@@ -293,10 +293,10 @@ function (ConfigCacheInterface $cache) {
                     }
                 }
 
-                $options = array(
+                $options = [
                     'class' => $this->options['matcher_cache_class'],
                     'base_class' => $this->options['matcher_base_class'],
-                );
+                ];
 
                 $cache->write($dumper->dump($options), $this->getRouteCollection()->getResources());
             }
@@ -327,10 +327,10 @@ public function getGenerator()
                 function (ConfigCacheInterface $cache) {
                     $dumper = $this->getGeneratorDumperInstance();
 
-                    $options = array(
+                    $options = [
                         'class' => $this->options['generator_cache_class'],
                         'base_class' => $this->options['generator_base_class'],
-                    );
+                    ];
 
                     $cache->write($dumper->dump($options), $this->getRouteCollection()->getResources());
                 }
diff --git a/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php b/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
index 9af22f29f802..2cbfd7390784 100644
--- a/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
+++ b/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
@@ -21,7 +21,7 @@ class RouteTest extends TestCase
      */
     public function testInvalidRouteParameter()
     {
-        $route = new Route(array('foo' => 'bar'));
+        $route = new Route(['foo' => 'bar']);
     }
 
     /**
@@ -29,22 +29,22 @@ public function testInvalidRouteParameter()
      */
     public function testRouteParameters($parameter, $value, $getter)
     {
-        $route = new Route(array($parameter => $value));
+        $route = new Route([$parameter => $value]);
         $this->assertEquals($route->$getter(), $value);
     }
 
     public function getValidParameters()
     {
-        return array(
-            array('value', '/Blog', 'getPath'),
-            array('requirements', array('locale' => 'en'), 'getRequirements'),
-            array('options', array('compiler_class' => 'RouteCompiler'), 'getOptions'),
-            array('name', 'blog_index', 'getName'),
-            array('defaults', array('_controller' => 'MyBlogBundle:Blog:index'), 'getDefaults'),
-            array('schemes', array('https'), 'getSchemes'),
-            array('methods', array('GET', 'POST'), 'getMethods'),
-            array('host', '{locale}.example.com', 'getHost'),
-            array('condition', 'context.getMethod() == "GET"', 'getCondition'),
-        );
+        return [
+            ['value', '/Blog', 'getPath'],
+            ['requirements', ['locale' => 'en'], 'getRequirements'],
+            ['options', ['compiler_class' => 'RouteCompiler'], 'getOptions'],
+            ['name', 'blog_index', 'getName'],
+            ['defaults', ['_controller' => 'MyBlogBundle:Blog:index'], 'getDefaults'],
+            ['schemes', ['https'], 'getSchemes'],
+            ['methods', ['GET', 'POST'], 'getMethods'],
+            ['host', '{locale}.example.com', 'getHost'],
+            ['condition', '
10000
context.getMethod() == "GET"', 'getCondition'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/CompiledRouteTest.php b/src/Symfony/Component/Routing/Tests/CompiledRouteTest.php
index 5bec7bbd7c86..9c9f4f286203 100644
--- a/src/Symfony/Component/Routing/Tests/CompiledRouteTest.php
+++ b/src/Symfony/Component/Routing/Tests/CompiledRouteTest.php
@@ -18,10 +18,10 @@ class CompiledRouteTest extends TestCase
 {
     public function testAccessors()
     {
-        $compiled = new CompiledRoute('prefix', 'regex', array('tokens'), array(), null, array(), array(), array('variables'));
+        $compiled = new CompiledRoute('prefix', 'regex', ['tokens'], [], null, [], [], ['variables']);
         $this->assertEquals('prefix', $compiled->getStaticPrefix(), '__construct() takes a static prefix as its second argument');
         $this->assertEquals('regex', $compiled->getRegex(), '__construct() takes a regexp as its third argument');
-        $this->assertEquals(array('tokens'), $compiled->getTokens(), '__construct() takes an array of tokens as its fourth argument');
-        $this->assertEquals(array('variables'), $compiled->getVariables(), '__construct() takes an array of variables as its ninth argument');
+        $this->assertEquals(['tokens'], $compiled->getTokens(), '__construct() takes an array of tokens as its fourth argument');
+        $this->assertEquals(['variables'], $compiled->getVariables(), '__construct() takes an array of variables as its ninth argument');
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/DependencyInjection/RoutingResolverPassTest.php b/src/Symfony/Component/Routing/Tests/DependencyInjection/RoutingResolverPassTest.php
index 97a34c969c2f..30c7516e5971 100644
--- a/src/Symfony/Component/Routing/Tests/DependencyInjection/RoutingResolverPassTest.php
+++ b/src/Symfony/Component/Routing/Tests/DependencyInjection/RoutingResolverPassTest.php
@@ -29,7 +29,7 @@ public function testProcess()
         (new RoutingResolverPass())->process($container);
 
         $this->assertEquals(
-            array(array('addLoader', array(new Reference('loader1'))), array('addLoader', array(new Reference('loader2')))),
+            [['addLoader', [new Reference('loader1')]], ['addLoader', [new Reference('loader2')]]],
             $container->getDefinition('routing.resolver')->getMethodCalls()
         );
     }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/CustomRouteCompiler.php b/src/Symfony/Component/Routing/Tests/Fixtures/CustomRouteCompiler.php
index c2e2afd9afcd..22b942d7bc87 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/CustomRouteCompiler.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/CustomRouteCompiler.php
@@ -21,6 +21,6 @@ class CustomRouteCompiler extends RouteCompiler
      */
     public static function compile(Route $route)
     {
-        return new CustomCompiledRoute('', '', array(), array());
+        return new CustomCompiledRoute('', '', [], []);
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/RedirectableUrlMatcher.php b/src/Symfony/Component/Routing/Tests/Fixtures/RedirectableUrlMatcher.php
index 08b67a076778..79ae1cce54ca 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/RedirectableUrlMatcher.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/RedirectableUrlMatcher.php
@@ -21,10 +21,10 @@ class RedirectableUrlMatcher extends UrlMatcher implements RedirectableUrlMatche
 {
     public function redirect($path, $route, $scheme = null)
     {
-        return array(
+        return [
             '_controller' => 'Some controller reference...',
             'path' => $path,
             'scheme' => $scheme,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/glob/php_dsl_bar.php b/src/Symfony/Component/Routing/Tests/Fixtures/glob/php_dsl_bar.php
index e2b91b17da49..e6ccf24f4e52 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/glob/php_dsl_bar.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/glob/php_dsl_bar.php
@@ -6,7 +6,7 @@
     $collection = $routes->collection();
 
     $collection->add('bar_route', '/bar')
-        ->defaults(array('_controller' => 'AppBundle:Bar:view'));
+        ->defaults(['_controller' => 'AppBundle:Bar:view']);
 
     return $collection;
 };
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/glob/php_dsl_baz.php b/src/Symfony/Component/Routing/Tests/Fixtures/glob/php_dsl_baz.php
index ca8f188a7633..cce65d7054f9 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/glob/php_dsl_baz.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/glob/php_dsl_baz.php
@@ -6,7 +6,7 @@
     $collection = $routes->collection();
 
     $collection->add('baz_route', '/baz')
-        ->defaults(array('_controller' => 'AppBundle:Baz:view'));
+        ->defaults(['_controller' => 'AppBundle:Baz:view']);
 
     return $collection;
 };
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl.php b/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl.php
index 0780c9fa80f1..73da01248403 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl.php
@@ -7,16 +7,16 @@
         ->collection()
         ->add('foo', '/foo')
             ->condition('abc')
-            ->options(array('utf8' => true))
+            ->options(['utf8' => true])
         ->add('buz', 'zub')
             ->controller('foo:act');
 
     $routes->import('php_dsl_sub.php')
         ->prefix('/sub')
-        ->requirements(array('id' => '\d+'));
+        ->requirements(['id' => '\d+']);
 
     $routes->add('ouf', '/ouf')
-        ->schemes(array('https'))
-        ->methods(array('GET'))
-        ->defaults(array('id' => 0));
+        ->schemes(['https'])
+        ->methods(['GET'])
+        ->defaults(['id' => 0]);
 };
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/validpattern.php b/src/Symfony/Component/Routing/Tests/Fixtures/validpattern.php
index 52ddfde0208f..3ef0e14862f2 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/validpattern.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/validpattern.php
@@ -6,12 +6,12 @@
 $collection = new RouteCollection();
 $collection->add('blog_show', new Route(
     '/blog/{slug}',
-    array('_controller' => 'MyBlogBundle:Blog:show'),
-    array('locale' => '\w+'),
-    array('compiler_class' => 'RouteCompiler'),
+    ['_controller' => 'MyBlogBundle:Blog:show'],
+    ['locale' => '\w+'],
+    ['compiler_class' => 'RouteCompiler'],
     '{locale}.example.com',
-    array('https'),
-    array('GET', 'POST', 'put', 'OpTiOnS'),
+    ['https'],
+    ['GET', 'POST', 'put', 'OpTiOnS'],
     'context.getMethod() == "GET"'
 ));
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/validresource.php b/src/Symfony/Component/Routing/Tests/Fixtures/validresource.php
index 482c80b29e91..31d354a34cd0 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/validresource.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/validresource.php
@@ -3,15 +3,15 @@
 /** @var $loader \Symfony\Component\Routing\Loader\PhpFileLoader */
 /** @var \Symfony\Component\Routing\RouteCollection $collection */
 $collection = $loader->import('validpattern.php');
-$collection->addDefaults(array(
+$collection->addDefaults([
     'foo' => 123,
-));
-$collection->addRequirements(array(
+]);
+$collection->addRequirements([
     'foo' => '\d+',
-));
-$collection->addOptions(array(
+]);
+$collection->addOptions([
     'foo' => 'bar',
-));
+]);
 $collection->setCondition('context.getMethod() == "POST"');
 $collection->addPrefix('/prefix');
 
diff --git a/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php b/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
index 32dc83e83e24..a6a47b4ba2fd 100644
--- a/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
@@ -73,10 +73,10 @@ public function testDumpWithRoutes()
 
         $projectUrlGenerator = new \ProjectUrlGenerator(new RequestContext('/app.php'));
 
-        $absoluteUrlWithParameter = $projectUrlGenerator->generate('Test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL);
-        $absoluteUrlWithoutParameter = $projectUrlGenerator->generate('Test2', array(), UrlGeneratorInterface::ABSOLUTE_URL);
-        $relativeUrlWithParameter = $projectUrlGenerator->generate('Test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_PATH);
-        $relativeUrlWithoutParameter = $projectUrlGenerator->generate('Test2', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $absoluteUrlWithParameter = $projectUrlGenerator->generate('Test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL);
+        $absoluteUrlWithoutParameter = $projectUrlGenerator->generate('Test2', [], UrlGeneratorInterface::ABSOLUTE_URL);
+        $relativeUrlWithParameter = $projectUrlGenerator->generate('Test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_PATH);
+        $relativeUrlWithoutParameter = $projectUrlGenerator->generate('Test2', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('http://localhost/app.php/testing/bar', $absoluteUrlWithParameter);
         $this->assertEquals('http://localhost/app.php/testing2', $absoluteUrlWithoutParameter);
@@ -96,18 +96,18 @@ public function testDumpWithTooManyRoutes()
         }
         $this->routeCollection->add('Test2', new Route('/testing2'));
 
-        file_put_contents($this->largeTestTmpFilepath, $this->generatorDumper->dump(array(
+        file_put_contents($this->largeTestTmpFilepath, $this->generatorDumper->dump([
             'class' => 'ProjectLargeUrlGenerator',
-        )));
+        ]));
         $this->routeCollection = $this->generatorDumper = null;
         include $this->largeTestTmpFilepath;
 
         $projectUrlGenerator = new \ProjectLargeUrlGenerator(new RequestContext('/app.php'));
 
-        $absoluteUrlWithParameter = $projectUrlGenerator->generate('Test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL);
-        $absoluteUrlWithoutParameter = $projectUrlGenerator->generate('Test2', array(), UrlGeneratorInterface::ABSOLUTE_URL);
-        $relativeUrlWithParameter = $projectUrlGenerator->generate('Test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_PATH);
-        $relativeUrlWithoutParameter = $projectUrlGenerator->generate('Test2', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $absoluteUrlWithParameter = $projectUrlGenerator->generate('Test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL);
+        $absoluteUrlWithoutParameter = $projectUrlGenerator->generate('Test2', [], UrlGeneratorInterface::ABSOLUTE_URL);
+        $relativeUrlWithParameter = $projectUrlGenerator->generate('Test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_PATH);
+        $relativeUrlWithoutParameter = $projectUrlGenerator->generate('Test2', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('http://localhost/app.php/testing/bar', $absoluteUrlWithParameter);
         $this->assertEquals('http://localhost/app.php/testing2', $absoluteUrlWithoutParameter);
@@ -120,12 +120,12 @@ public function testDumpWithTooManyRoutes()
      */
     public function testDumpWithoutRoutes()
     {
-        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(array('class' => 'WithoutRoutesUrlGenerator')));
+        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(['class' => 'WithoutRoutesUrlGenerator']));
         include $this->testTmpFilepath;
 
         $projectUrlGenerator = new \WithoutRoutesUrlGenerator(new RequestContext('/app.php'));
 
-        $projectUrlGenerator->generate('Test', array());
+        $projectUrlGenerator->generate('Test', []);
     }
 
     /**
@@ -135,45 +135,45 @@ public function testGenerateNonExistingRoute()
     {
         $this->routeCollection->add('Test', new Route('/test'));
 
-        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(array('class' => 'NonExistingRoutesUrlGenerator')));
+        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(['class' => 'NonExistingRoutesUrlGenerator']));
         include $this->testTmpFilepath;
 
         $projectUrlGenerator = new \NonExistingRoutesUrlGenerator(new RequestContext());
-        $url = $projectUrlGenerator->generate('NonExisting', array());
+        $url = $projectUrlGenerator->generate('NonExisting', []);
     }
 
     public function testDumpForRouteWithDefaults()
     {
-        $this->routeCollection->add('Test', new Route('/testing/{foo}', array('foo' => 'bar')));
+        $this->routeCollection->add('Test', new Route('/testing/{foo}', ['foo' => 'bar']));
 
-        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(array('class' => 'DefaultRoutesUrlGenerator')));
+        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(['class' => 'DefaultRoutesUrlGenerator']));
         include $this->testTmpFilepath;
 
         $projectUrlGenerator = new \DefaultRoutesUrlGenerator(new RequestContext());
-        $url = $projectUrlGenerator->generate('Test', array());
+        $url = $projectUrlGenerator->generate('Test', []);
 
         $this->assertEquals('/testing', $url);
     }
 
     public function testDumpWithSchemeRequirement()
     {
-        $this->routeCollection->add('Test1', new Route('/testing', array(), array(), array(), '', array('ftp', 'https')));
+        $this->routeCollection->add('Test1', new Route('/testing', [], [], [], '', ['ftp', 'https']));
 
-        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(array('class' => 'SchemeUrlGenerator')));
+        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(['class' => 'SchemeUrlGenerator']));
         include $this->testTmpFilepath;
 
         $projectUrlGenerator = new \SchemeUrlGenerator(new RequestContext('/app.php'));
 
-        $absoluteUrl = $projectUrlGenerator->generate('Test1', array(), UrlGeneratorInterface::ABSOLUTE_URL);
-        $relativeUrl = $projectUrlGenerator->generate('Test1', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $absoluteUrl = $projectUrlGenerator->generate('Test1', [], UrlGeneratorInterface::ABSOLUTE_URL);
+        $relativeUrl = $projectUrlGenerator->generate('Test1', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('ftp://localhost/app.php/testing', $absoluteUrl);
         $this->assertEquals('ftp://localhost/app.php/testing', $relativeUrl);
 
         $projectUrlGenerator = new \SchemeUrlGenerator(new RequestContext('/app.php', 'GET', 'localhost', 'https'));
 
-        $absoluteUrl = $projectUrlGenerator->generate('Test1', array(), UrlGeneratorInterface::ABSOLUTE_URL);
-        $relativeUrl = $projectUrlGenerator->generate('Test1', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $absoluteUrl = $projectUrlGenerator->generate('Test1', [], UrlGeneratorInterface::ABSOLUTE_URL);
+        $relativeUrl = $projectUrlGenerator->generate('Test1', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('https://localhost/app.php/testing', $absoluteUrl);
         $this->assertEquals('/app.php/testing', $relativeUrl);
diff --git a/src/Symfony/Component/Routing/Tests/Generator/UrlGeneratorTest.php b/src/Symfony/Component/Routing/Tests/Generator/UrlGeneratorTest.php
index d4bf18ccac92..d92161c05c33 100644
--- a/src/Symfony/Component/Routing/Tests/Generator/UrlGeneratorTest.php
+++ b/src/Symfony/Component/Routing/Tests/Generator/UrlGeneratorTest.php
@@ -23,7 +23,7 @@ class UrlGeneratorTest extends TestCase
     public function testAbsoluteUrlWithPort80()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes)->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL);
+        $url = $this->getGenerator($routes)->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL);
 
         $this->assertEquals('http://localhost/app.php/testing', $url);
     }
@@ -31,7 +31,7 @@ public function testAbsoluteUrlWithPort80()
     public function testAbsoluteSecureUrlWithPort443()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes, array('scheme' => 'https'))->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL);
+        $url = $this->getGenerator($routes, ['scheme' => 'https'])->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL);
 
         $this->assertEquals('https://localhost/app.php/testing', $url);
     }
@@ -39,7 +39,7 @@ public function testAbsoluteSecureUrlWithPort443()
     public function testAbsoluteUrlWithNonStandardPort()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes, array('httpPort' => 8080))->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL);
+        $url = $this->getGenerator($routes, ['httpPort' => 8080])->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL);
 
         $this->assertEquals('http://localhost:8080/app.php/testing', $url);
     }
@@ -47,7 +47,7 @@ public function testAbsoluteUrlWithNonStandardPort()
     public function testAbsoluteSecureUrlWithNonStandardPort()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes, array('httpsPort' => 8080, 'scheme' => 'https'))->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL);
+        $url = $this->getGenerator($routes, ['httpsPort' => 8080, 'scheme' => 'https'])->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL);
 
         $this->assertEquals('https://localhost:8080/app.php/testing', $url);
     }
@@ -55,7 +55,7 @@ public function testAbsoluteSecureUrlWithNonStandardPort()
     public function testRelativeUrlWithoutParameters()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes)->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $url = $this->getGenerator($routes)->generate('test', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('/app.php/testing', $url);
     }
@@ -63,15 +63,15 @@ public function testRelativeUrlWithoutParameters()
     public function testRelativeUrlWithParameter()
     {
         $routes = $this->getRoutes('test', new Route('/testing/{foo}'));
-        $url = $this->getGenerator($routes)->generate('test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $url = $this->getGenerator($routes)->generate('test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('/app.php/testing/bar', $url);
     }
 
     public function testRelativeUrlWithNullParameter()
     {
-        $routes = $this->getRoutes('test', new Route('/testing.{format}', array('format' => null)));
-        $url = $this->getGenerator($routes)->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $routes = $this->getRoutes('test', new Route('/testing.{format}', ['format' => null]));
+        $url = $this->getGenerator($routes)->generate('test', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('/app.php/testing', $url);
     }
@@ -81,31 +81,31 @@ public function testRelativeUrlWithNullParameter()
      */
     public function testRelativeUrlWithNullParameterButNotOptional()
     {
-        $routes = $this->getRoutes('test', new Route('/testing/{foo}/bar', array('foo' => null)));
+        $routes = $this->getRoutes('test', new Route('/testing/{foo}/bar', ['foo' => null]));
         // This must raise an exception because the default requirement for "foo" is "[^/]+" which is not met with these params.
         // Generating path "/testing//bar" would be wrong as matching this route would fail.
-        $this->getGenerator($routes)->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $this->getGenerator($routes)->generate('test', [], UrlGeneratorInterface::ABSOLUTE_PATH);
     }
 
     public function testRelativeUrlWithOptionalZeroParameter()
     {
         $routes = $this->getRoutes('test', new Route('/testing/{page}'));
-        $url = $this->getGenerator($routes)->generate('test', array('page' => 0), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $url = $this->getGenerator($routes)->generate('test', ['page' => 0], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('/app.php/testing/0', $url);
     }
 
     public function testNotPassedOptionalParameterInBetween()
     {
-        $routes = $this->getRoutes('test', new Route('/{slug}/{page}', array('slug' => 'index', 'page' => 0)));
-        $this->assertSame('/app.php/index/1', $this->getGenerator($routes)->generate('test', array('page' => 1)));
+        $routes = $this->getRoutes('test', new Route('/{slug}/{page}', ['slug' => 'index', 'page' => 0]));
+        $this->assertSame('/app.php/index/1', $this->getGenerator($routes)->generate('test', ['page' => 1]));
         $this->assertSame('/app.php/', $this->getGenerator($routes)->generate('test'));
     }
 
     public function testRelativeUrlWithExtraParameters()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes)->generate('test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $url = $this->getGenerator($routes)->generate('test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('/app.php/testing?foo=bar', $url);
     }
@@ -113,7 +113,7 @@ public function testRelativeUrlWithExtraParameters()
     public function testAbsoluteUrlWithExtraParameters()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes)->generate('test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL);
+        $url = $this->getGenerator($routes)->generate('test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL);
 
         $this->assertEquals('http://localhost/app.php/testing?foo=bar', $url);
     }
@@ -121,7 +121,7 @@ public function testAbsoluteUrlWithExtraParameters()
     public function testUrlWithNullExtraParameters()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes)->generate('test', array('foo' => null), UrlGeneratorInterface::ABSOLUTE_URL);
+        $url = $this->getGenerator($routes)->generate('test', ['foo' => null], UrlGeneratorInterface::ABSOLUTE_URL);
 
         $this->assertEquals('http://localhost/app.php/testing', $url);
     }
@@ -133,7 +133,7 @@ public function testUrlWithExtraParametersFromGlobals()
         $context = new RequestContext('/app.php');
         $context->setParameter('bar', 'bar');
         $generator->setContext($context);
-        $url = $generator->generate('test', array('foo' => 'bar'));
+        $url = $generator->generate('test', ['foo' => 'bar']);
 
         $this->assertEquals('/app.php/testing?foo=bar', $url);
     }
@@ -145,19 +145,19 @@ public function testUrlWithGlobalParameter()
         $context = new RequestContext('/app.php');
         $context->setParameter('foo', 'bar');
         $generator->setContext($context);
-        $url = $generator->generate('test', array());
+        $url = $generator->generate('test', []);
 
         $this->assertEquals('/app.php/testing/bar', $url);
     }
 
     public function testGlobalParameterHasHigherPriorityThanDefault()
     {
-        $routes = $this->getRoutes('test', new Route('/{_locale}', array('_locale' => 'en')));
+        $routes = $this->getRoutes('test', new Route('/{_locale}', ['_locale' => 'en']));
         $generator = $this->getGenerator($routes);
         $context = new RequestContext('/app.php');
         $context->setParameter('_locale', 'de');
         $generator->setContext($context);
-        $url = $generator->generate('test', array());
+        $url = $generator->generate('test', []);
 
         $this->assertSame('/app.php/de', $url);
     }
@@ -168,7 +168,7 @@ public function testGlobalParameterHasHigherPriorityThanDefault()
     public function testGenerateWithoutRoutes()
     {
         $routes = $this->getRoutes('foo', new Route('/testing/{foo}'));
-        $this->getGenerator($routes)->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL);
+        $this->getGenerator($routes)->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL);
     }
 
     /**
@@ -177,7 +177,7 @@ public function testGenerateWithoutRoutes()
     public function testGenerateForRouteWithoutMandatoryParameter()
     {
         $routes = $this->getRoutes('test', new Route('/testing/{foo}'));
-        $this->getGenerator($routes)->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL);
+        $this->getGenerator($routes)->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL);
     }
 
     /**
@@ -185,8 +185,8 @@ public function testGenerateForRouteWithoutMandatoryParameter()
      */
     public function testGenerateForRouteWithInvalidOptionalParameter()
     {
-        $routes = $this->getRoutes('test', new Route('/testing/{foo}', array('foo' => '1'), array('foo' => 'd+')));
-        $this->getGenerator($routes)->generate('test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL);
+        $routes = $this->getRoutes('test', new Route('/testing/{foo}', ['foo' => '1'], ['foo' => 'd+']));
+        $this->getGenerator($routes)->generate('test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL);
     }
 
     /**
@@ -194,35 +194,35 @@ public function testGenerateForRouteWithInvalidOptionalParameter()
      */
     public function testGenerateForRouteWithInvalidParameter()
     {
-        $routes = $this->getRoutes('test', new Route('/testing/{foo}', array(), array('foo' => '1|2')));
-        $this->getGenerator($routes)->generate('test', array('foo' => '0'), UrlGeneratorInterface::ABSOLUTE_URL);
+        $routes = $this->getRoutes('test', new Route('/testing/{foo}', [], ['foo' => '1|2']));
+        $this->getGenerator($routes)->generate('test', ['foo' => '0'], UrlGeneratorInterface::ABSOLUTE_URL);
     }
 
     public function testGenerateForRouteWithInvalidOptionalParameterNonStrict()
     {
-        $routes = $this->getRoutes('test', new Route('/testing/{foo}', array('foo' => '1'), array('foo' => 'd+')));
+        $routes = $this->getRoutes('test', new Route('/testing/{foo}', ['foo' => '1'], ['foo' => 'd+']));
         $generator = $this->getGenerator($routes);
         $generator->setStrictRequirements(false);
-        $this->assertNull($generator->generate('test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL));
+        $this->assertNull($generator->generate('test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL));
     }
 
     public function testGenerateForRouteWithInvalidOptionalParameterNonStrictWithLogger()
     {
-        $routes = $this->getRoutes('test', new Route('/testing/{foo}', array('foo' => '1'), array('foo' => 'd+')));
+        $routes = $this->getRoutes('test', new Route('/testing/{foo}', ['foo' => '1'], ['foo' => 'd+']));
         $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $logger->expects($this->once())
             ->method('error');
-        $generator = $this->getGenerator($routes, array(), $logger);
+        $generator = $this->getGenerator($routes, [], $logger);
         $generator->setStrictRequirements(false);
-        $this->assertNull($generator->generate('test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL));
+        $this->assertNull($generator->generate('test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL));
     }
 
     public function testGenerateForRouteWithInvalidParameterButDisabledRequirementsCheck()
     {
-        $routes = $this->getRoutes('test', new Route('/testing/{foo}', array('foo' => '1'), array('foo' => 'd+')));
+        $routes = $this->getRoutes('test', new Route('/testing/{foo}', ['foo' => '1'], ['foo' => 'd+']));
         $generator = $this->getGenerator($routes);
         $generator->setStrictRequirements(null);
-        $this->assertSame('/app.php/testing/bar', $generator->generate('test', array('foo' => 'bar')));
+        $this->assertSame('/app.php/testing/bar', $generator->generate('test', ['foo' => 'bar']));
     }
 
     /**
@@ -230,8 +230,8 @@ public function testGenerateForRouteWithInvalidParameterButDisabledRequirementsC
      */
     public function testGenerateForRouteWithInvalidMandatoryParameter()
     {
-        $routes = $this->getRoutes('test', new Route('/testing/{foo}', array(), array('foo' => 'd+')));
-        $this->getGenerator($routes)->generate('test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL);
+        $routes = $this->getRoutes('test', new Route('/testing/{foo}', [], ['foo' => 'd+']));
+        $this->getGenerator($routes)->generate('test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL);
     }
 
     /**
@@ -239,8 +239,8 @@ public function testGenerateForRouteWithInvalidMandatoryParameter()
      */
     public function testGenerateForRouteWithInvalidUtf8Parameter()
     {
-        $routes = $this->getRoutes('test', new Route('/testing/{foo}', array(), array('foo' => '\pL+'), array('utf8' => true)));
-        $this->getGenerator($routes)->generate('test', array('foo' => 'abc123'), UrlGeneratorInterface::ABSOLUTE_URL);
+        $routes = $this->getRoutes('test', new Route('/testing/{foo}', [], ['foo' => '\pL+'], ['utf8' => true]));
+        $this->getGenerator($routes)->generate('test', ['foo' => 'abc123'], UrlGeneratorInterface::ABSOLUTE_URL);
     }
 
     /**
@@ -248,31 +248,31 @@ public function testGenerateForRouteWithInvalidUtf8Parameter()
      */
     public function testRequiredParamAndEmptyPassed()
     {
-        $routes = $this->getRoutes('test', new Route('/{slug}', array(), array('slug' => '.+')));
-        $this->getGenerator($routes)->generate('test', array('slug' => ''));
+        $routes = $this->getRoutes('test', new Route('/{slug}', [], ['slug' => '.+']));
+        $this->getGenerator($routes)->generate('test', ['slug' => '']);
     }
 
     public function testSchemeRequirementDoesNothingIfSameCurrentScheme()
     {
-        $routes = $this->getRoutes('test', new Route('/', array(), array(), array(), '', array('http')));
+        $routes = $this->getRoutes('test', new Route('/', [], [], [], '', ['http']));
         $this->assertEquals('/app.php/', $this->getGenerator($routes)->generate('test'));
 
-        $routes = $this->getRoutes('test', new Route('/', array(), array(), array(), '', array('https')));
-        $this->assertEquals('/app.php/', $this->getGenerator($routes, array('scheme' => 'https'))->generate('test'));
+        $routes = $this->getRoutes('test', new Route('/', [], [], [], '', ['https']));
+        $this->assertEquals('/app.php/', $this->getGenerator($routes, ['scheme' => 'https'])->generate('test'));
     }
 
     public function testSchemeRequirementForcesAbsoluteUrl()
     {
-        $routes = $this->getRoutes('test', new Route('/', array(), array(), array(), '', array('https')));
+        $routes = $this->getRoutes('test', new Route('/', [], [], [], '', ['https']));
         $this->assertEquals('https://localhost/app.php/', $this->getGenerator($routes)->generate('test'));
 
-        $routes = $this->getRoutes('test', new Route('/', array(), array(), array(), '', array('http')));
-        $this->assertEquals('http://localhost/app.php/', $this->getGenerator($routes, array('scheme' => 'https'))->generate('test'));
+        $routes = $this->getRoutes('test', new Route('/', [], [], [], '', ['http']));
+        $this->assertEquals('http://localhost/app.php/', $this->getGenerator($routes, ['scheme' => 'https'])->generate('test'));
     }
 
     public function testSchemeRequirementCreatesUrlForFirstRequiredScheme()
     {
-        $routes = $this->getRoutes('test', new Route('/', array(), array(), array(), '', array('Ftp', 'https')));
+        $routes = $this->getRoutes('test', new Route('/', [], [], [], '', ['Ftp', 'https']));
         $this->assertEquals('ftp://localhost/app.php/', $this->getGenerator($routes)->generate('test'));
     }
 
@@ -281,48 +281,48 @@ public function testPathWithTwoStartingSlashes()
         $routes = $this->getRoutes('test', new Route('//path-and-not-domain'));
 
         // this must not generate '//path-and-not-domain' because that would be a network path
-        $this->assertSame('/path-and-not-domain', $this->getGenerator($routes, array('BaseUrl' => ''))->generate('test'));
+        $this->assertSame('/path-and-not-domain', $this->getGenerator($routes, ['BaseUrl' => ''])->generate('test'));
     }
 
     public function testNoTrailingSlashForMultipleOptionalParameters()
     {
-        $routes = $this->getRoutes('test', new Route('/category/{slug1}/{slug2}/{slug3}', array('slug2' => null, 'slug3' => null)));
+        $routes = $this->getRoutes('test', new Route('/category/{slug1}/{slug2}/{slug3}', ['slug2' => null, 'slug3' => null]));
 
-        $this->assertEquals('/app.php/category/foo', $this->getGenerator($routes)->generate('test', array('slug1' => 'foo')));
+        $this->assertEquals('/app.php/category/foo', $this->getGenerator($routes)->generate('test', ['slug1' => 'foo']));
     }
 
     public function testWithAnIntegerAsADefaultValue()
     {
-        $routes = $this->getRoutes('test', new Route('/{default}', array('default' => 0)));
+        $routes = $this->getRoutes('test', new Route('/{default}', ['default' => 0]));
 
-        $this->assertEquals('/app.php/foo', $this->getGenerator($routes)->generate('test', array('default' => 'foo')));
+        $this->assertEquals('/app.php/foo', $this->getGenerator($routes)->generate('test', ['default' => 'foo']));
     }
 
     public function testNullForOptionalParameterIsIgnored()
     {
-        $routes = $this->getRoutes('test', new Route('/test/{default}', array('default' => 0)));
+        $routes = $this->getRoutes('test', new Route('/test/{default}', ['default' => 0]));
 
-        $this->assertEquals('/app.php/test', $this->getGenerator($routes)->generate('test', array('default' => null)));
+        $this->assertEquals('/app.php/test', $this->getGenerator($routes)->generate('test', ['default' => null]));
     }
 
     public function testQueryParamSameAsDefault()
     {
-        $routes = $this->getRoutes('test', new Route('/test', array('page' => 1)));
+        $routes = $this->getRoutes('test', new Route('/test', ['page' => 1]));
 
-        $this->assertSame('/app.php/test?page=2', $this->getGenerator($routes)->generate('test', array('page' => 2)));
-        $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test', array('page' => 1)));
-        $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test', array('page' => '1')));
+        $this->assertSame('/app.php/test?page=2', $this->getGenerator($routes)->generate('test', ['page' => 2]));
+        $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test', ['page' => 1]));
+        $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test', ['page' => '1']));
         $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test'));
     }
 
     public function testArrayQueryParamSameAsDefault()
     {
-        $routes = $this->getRoutes('test', new Route('/test', array('array' => array('foo', 'bar'))));
+        $routes = $this->getRoutes('test', new Route('/test', ['array' => ['foo', 'bar']]));
 
-        $this->assertSame('/app.php/test?array%5B0%5D=bar&array%5B1%5D=foo', $this->getGenerator($routes)->generate('test', array('array' => array('bar', 'foo'))));
-        $this->assertSame('/app.php/test?array%5Ba%5D=foo&array%5Bb%5D=bar', $this->getGenerator($routes)->generate('test', array('array' => array('a' => 'foo', 'b' => 'bar'))));
-        $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test', array('array' => array('foo', 'bar'))));
-        $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test', array('array' => array(1 => 'bar', 0 => 'foo'))));
+        $this->assertSame('/app.php/test?array%5B0%5D=bar&array%5B1%5D=foo', $this->getGenerator($routes)->generate('test', ['array' => ['bar', 'foo']]));
+        $this->assertSame('/app.php/test?array%5Ba%5D=foo&array%5Bb%5D=bar', $this->getGenerator($routes)->generate('test', ['array' => ['a' => 'foo', 'b' => 'bar']]));
+        $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test', ['array' => ['foo', 'bar']]));
+        $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test', ['array' => [1 => 'bar', 0 => 'foo']]));
         $this->assertSame('/app.php/test', $this->getGenerator($routes)->generate('test'));
     }
 
@@ -342,11 +342,11 @@ public function testUrlEncoding()
         // This tests the encoding of reserved characters that are used for delimiting of URI components (defined in RFC 3986)
         // and other special ASCII chars. These chars are tested as static text path, variable path and query param.
         $chars = '@:[]/()*\'" +,;-._~&$<>|{}%\\^`!?foo=bar#id';
-        $routes = $this->getRoutes('test', new Route("/$chars/{varpath}", array(), array('varpath' => '.+')));
-        $this->assertSame($expectedPath, $this->getGenerator($routes)->generate('test', array(
+        $routes = $this->getRoutes('test', new Route("/$chars/{varpath}", [], ['varpath' => '.+']));
+        $this->assertSame($expectedPath, $this->getGenerator($routes)->generate('test', [
             'varpath' => $chars,
             'query' => $chars,
-        )));
+        ]));
     }
 
     public function testEncodingOfRelativePathSegments()
@@ -361,24 +361,24 @@ public function testEncodingOfRelativePathSegments()
 
     public function testAdjacentVariables()
     {
-        $routes = $this->getRoutes('test', new Route('/{x}{y}{z}.{_format}', array('z' => 'default-z', '_format' => 'html'), array('y' => '\d+')));
+        $routes = $this->getRoutes('test', new Route('/{x}{y}{z}.{_format}', ['z' => 'default-z', '_format' => 'html'], ['y' => '\d+']));
         $generator = $this->getGenerator($routes);
-        $this->assertSame('/app.php/foo123', $generator->generate('test', array('x' => 'foo', 'y' => '123')));
-        $this->assertSame('/app.php/foo123bar.xml', $generator->generate('test', array('x' => 'foo', 'y' => '123', 'z' => 'bar', '_format' => 'xml')));
+        $this->assertSame('/app.php/foo123', $generator->generate('test', ['x' => 'foo', 'y' => '123']));
+        $this->assertSame('/app.php/foo123bar.xml', $generator->generate('test', ['x' => 'foo', 'y' => '123', 'z' => 'bar', '_format' => 'xml']));
 
         // The default requirement for 'x' should not allow the separator '.' in this case because it would otherwise match everything
         // and following optional variables like _format could never match.
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('Symfony\Component\Routing\Exception\InvalidParameterException');
-        $generator->generate('test', array('x' => 'do.t', 'y' => '123', 'z' => 'bar', '_format' => 'xml'));
+        $generator->generate('test', ['x' => 'do.t', 'y' => '123', 'z' => 'bar', '_format' => 'xml']);
     }
 
     public function testOptionalVariableWithNoRealSeparator()
     {
-        $routes = $this->getRoutes('test', new Route('/get{what}', array('what' => 'All')));
+        $routes = $this->getRoutes('test', new Route('/get{what}', ['what' => 'All']));
         $generator = $this->getGenerator($routes);
 
         $this->assertSame('/app.php/get', $generator->generate('test'));
-        $this->assertSame('/app.php/getSites', $generator->generate('test', array('what' => 'Sites')));
+        $this->assertSame('/app.php/getSites', $generator->generate('test', ['what' => 'Sites']));
     }
 
     public function testRequiredVariableWithNoRealSeparator()
@@ -386,7 +386,7 @@ public function testRequiredVariableWithNoRealSeparator()
         $routes = $this->getRoutes('test', new Route('/get{what}Suffix'));
         $generator = $this->getGenerator($routes);
 
-        $this->assertSame('/app.php/getSitesSuffix', $generator->generate('test', array('what' => 'Sites')));
+        $this->assertSame('/app.php/getSitesSuffix', $generator->generate('test', ['what' => 'Sites']));
     }
 
     public function testDefaultRequirementOfVariable()
@@ -394,7 +394,7 @@ public function testDefaultRequirementOfVariable()
         $routes = $this->getRoutes('test', new Route('/{page}.{_format}'));
         $generator = $this->getGenerator($routes);
 
-        $this->assertSame('/app.php/index.mobile.html', $generator->generate('test', array('page' => 'index', '_format' => 'mobile.html')));
+        $this->assertSame('/app.php/index.mobile.html', $generator->generate('test', ['page' => 'index', '_format' => 'mobile.html']));
     }
 
     /**
@@ -403,7 +403,7 @@ public function testDefaultRequirementOfVariable()
     public function testDefaultRequirementOfVariableDisallowsSlash()
     {
         $routes = $this->getRoutes('test', new Route('/{page}.{_format}'));
-        $this->getGenerator($routes)->generate('test', array('page' => 'index', '_format' => 'sl/ash'));
+        $this->getGenerator($routes)->generate('test', ['page' => 'index', '_format' => 'sl/ash']);
     }
 
     /**
@@ -412,28 +412,28 @@ public function testDefaultRequirementOfVariableDisallowsSlash()
     public function testDefaultRequirementOfVariableDisallowsNextSeparator()
     {
         $routes = $this->getRoutes('test', new Route('/{page}.{_format}'));
-        $this->getGenerator($routes)->generate('test', array('page' => 'do.t', '_format' => 'html'));
+        $this->getGenerator($routes)->generate('test', ['page' => 'do.t', '_format' => 'html']);
     }
 
     public function testWithHostDifferentFromContext()
     {
-        $routes = $this->getRoutes('test', new Route('/{name}', array(), array(), array(), '{locale}.example.com'));
+        $routes = $this->getRoutes('test', new Route('/{name}', [], [], [], '{locale}.example.com'));
 
-        $this->assertEquals('//fr.example.com/app.php/Fabien', $this->getGenerator($routes)->generate('test', array('name' => 'Fabien', 'locale' => 'fr')));
+        $this->assertEquals('//fr.example.com/app.php/Fabien', $this->getGenerator($routes)->generate('test', ['name' => 'Fabien', 'locale' => 'fr']));
     }
 
     public function testWithHostSameAsContext()
     {
-        $routes = $this->getRoutes('test', new Route('/{name}', array(), array(), array(), '{locale}.example.com'));
+        $routes = $this->getRoutes('test', new Route('/{name}', [], [], [], '{locale}.example.com'));
 
-        $this->assertEquals('/app.php/Fabien', $this->getGenerator($routes, array('host' => 'fr.example.com'))->generate('test', array('name' => 'Fabien', 'locale' => 'fr')));
+        $this->assertEquals('/app.php/Fabien', $this->getGenerator($routes, ['host' => 'fr.example.com'])->generate('test', ['name' => 'Fabien', 'locale' => 'fr']));
     }
 
     public function testWithHostSameAsContextAndAbsolute()
     {
-        $routes = $this->getRoutes('test', new Route('/{name}', array(), array(), array(), '{locale}.example.com'));
+        $routes = $this->getRoutes('test', new Route('/{name}', [], [], [], '{locale}.example.com'));
 
-        $this->assertEquals('http://fr.example.com/app.php/Fabien', $this->getGenerator($routes, array('host' => 'fr.example.com'))->generate('test', array('name' => 'Fabien', 'locale' => 'fr'), UrlGeneratorInterface::ABSOLUTE_URL));
+        $this->assertEquals('http://fr.example.com/app.php/Fabien', $this->getGenerator($routes, ['host' => 'fr.example.com'])->generate('test', ['name' => 'Fabien', 'locale' => 'fr'], UrlGeneratorInterface::ABSOLUTE_URL));
     }
 
     /**
@@ -441,8 +441,8 @@ public function testWithHostSameAsContextAndAbsolute()
      */
     public function testUrlWithInvalidParameterInHost()
     {
-        $routes = $this->getRoutes('test', new Route('/', array(), array('foo' => 'bar'), array(), '{foo}.example.com'));
-        $this->getGenerator($routes)->generate('test', array('foo' => 'baz'), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $routes = $this->getRoutes('test', new Route('/', [], ['foo' => 'bar'], [], '{foo}.example.com'));
+        $this->getGenerator($routes)->generate('test', ['foo' => 'baz'], UrlGeneratorInterface::ABSOLUTE_PATH);
     }
 
     /**
@@ -450,8 +450,8 @@ public function testUrlWithInvalidParameterInHost()
      */
     public function testUrlWithInvalidParameterInHostWhenParamHasADefaultValue()
     {
-        $routes = $this->getRoutes('test', new Route('/', array('foo' => 'bar'), array('foo' => 'bar'), array(), '{foo}.example.com'));
-        $this->getGenerator($routes)->generate('test', array('foo' => 'baz'), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $routes = $this->getRoutes('test', new Route('/', ['foo' => 'bar'], ['foo' => 'bar'], [], '{foo}.example.com'));
+        $this->getGenerator($routes)->generate('test', ['foo' => 'baz'], UrlGeneratorInterface::ABSOLUTE_PATH);
     }
 
     /**
@@ -459,72 +459,72 @@ public function testUrlWithInvalidParameterInHostWhenParamHasADefaultValue()
      */
     public function testUrlWithInvalidParameterEqualsDefaultValueInHost()
     {
-        $routes = $this->getRoutes('test', new Route('/', array('foo' => 'baz'), array('foo' => 'bar'), array(), '{foo}.example.com'));
-        $this->getGenerator($routes)->generate('test', array('foo' => 'baz'), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $routes = $this->getRoutes('test', new Route('/', ['foo' => 'baz'], ['foo' => 'bar'], [], '{foo}.example.com'));
+        $this->getGenerator($routes)->generate('test', ['foo' => 'baz'], UrlGeneratorInterface::ABSOLUTE_PATH);
     }
 
     public function testUrlWithInvalidParameterInHostInNonStrictMode()
     {
-        $routes = $this->getRoutes('test', new Route('/', array(), array('foo' => 'bar'), array(), '{foo}.example.com'));
+        $routes = $this->getRoutes('test', new Route('/', [], ['foo' => 'bar'], [], '{foo}.example.com'));
         $generator = $this->getGenerator($routes);
         $generator->setStrictRequirements(false);
-        $this->assertNull($generator->generate('test', array('foo' => 'baz'), UrlGeneratorInterface::ABSOLUTE_PATH));
+        $this->assertNull($generator->generate('test', ['foo' => 'baz'], UrlGeneratorInterface::ABSOLUTE_PATH));
     }
 
     public function testHostIsCaseInsensitive()
     {
-        $routes = $this->getRoutes('test', new Route('/', array(), array('locale' => 'en|de|fr'), array(), '{locale}.FooBar.com'));
+        $routes = $this->getRoutes('test', new Route('/', [], ['locale' => 'en|de|fr'], [], '{locale}.FooBar.com'));
         $generator = $this->getGenerator($routes);
-        $this->assertSame('//EN.FooBar.com/app.php/', $generator->generate('test', array('locale' => 'EN'), UrlGeneratorInterface::NETWORK_PATH));
+        $this->assertSame('//EN.FooBar.com/app.php/', $generator->generate('test', ['locale' => 'EN'], UrlGeneratorInterface::NETWORK_PATH));
     }
 
     public function testDefaultHostIsUsedWhenContextHostIsEmpty()
     {
-        $routes = $this->getRoutes('test', new Route('/route', array('domain' => 'my.fallback.host'), array('domain' => '.+'), array(), '{domain}', array('http')));
+        $routes = $this->getRoutes('test', new Route('/route', ['domain' => 'my.fallback.host'], ['domain' => '.+'], [], '{domain}', ['http']));
 
         $generator = $this->getGenerator($routes);
         $generator->getContext()->setHost('');
 
-        $this->assertSame('http://my.fallback.host/app.php/route', $generator->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL));
+        $this->assertSame('http://my.fallback.host/app.php/route', $generator->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL));
     }
 
     public function testDefaultHostIsUsedWhenContextHostIsEmptyAndSchemeIsNot()
     {
-        $routes = $this->getRoutes('test', new Route('/route', array('domain' => 'my.fallback.host'), array('domain' => '.+'), array(), '{domain}', array('http', 'https')));
+        $routes = $this->getRoutes('test', new Route('/route', ['domain' => 'my.fallback.host'], ['domain' => '.+'], [], '{domain}', ['http', 'https']));
 
         $generator = $this->getGenerator($routes);
         $generator->getContext()->setHost('');
         $generator->getContext()->setScheme('https');
 
-        $this->assertSame('https://my.fallback.host/app.php/route', $generator->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL));
+        $this->assertSame('https://my.fallback.host/app.php/route', $generator->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL));
     }
 
     public function testAbsoluteUrlFallbackToRelativeIfHostIsEmptyAndSchemeIsNot()
     {
-        $routes = $this->getRoutes('test', new Route('/route', array(), array(), array(), '', array('http', 'https')));
+        $routes = $this->getRoutes('test', new Route('/route', [], [], [], '', ['http', 'https']));
 
         $generator = $this->getGenerator($routes);
         $generator->getContext()->setHost('');
         $generator->getContext()->setScheme('https');
 
-        $this->assertSame('/app.php/route', $generator->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL));
+        $this->assertSame('/app.php/route', $generator->generate('test', [], UrlGeneratorInterface::ABSOLUTE_URL));
     }
 
     public function testGenerateNetworkPath()
     {
-        $routes = $this->getRoutes('test', new Route('/{name}', array(), array(), array(), '{locale}.example.com', array('http')));
+        $routes = $this->getRoutes('test', new Route('/{name}', [], [], [], '{locale}.example.com', ['http']));
 
         $this->assertSame('//fr.example.com/app.php/Fabien', $this->getGenerator($routes)->generate('test',
-            array('name' => 'Fabien', 'locale' => 'fr'), UrlGeneratorInterface::NETWORK_PATH), 'network path with different host'
+            ['name' => 'Fabien', 'locale' => 'fr'], UrlGeneratorInterface::NETWORK_PATH), 'network path with different host'
         );
-        $this->assertSame('//fr.example.com/app.php/Fabien?query=string', $this->getGenerator($routes, array('host' => 'fr.example.com'))->generate('test',
-            array('name' => 'Fabien', 'locale' => 'fr', 'query' => 'string'), UrlGeneratorInterface::NETWORK_PATH), 'network path although host same as context'
+        $this->assertSame('//fr.example.com/app.php/Fabien?query=string', $this->getGenerator($routes, ['host' => 'fr.example.com'])->generate('test',
+            ['name' => 'Fabien', 'locale' => 'fr', 'query' => 'string'], UrlGeneratorInterface::NETWORK_PATH), 'network path although host same as context'
         );
-        $this->assertSame('http://fr.example.com/app.php/Fabien', $this->getGenerator($routes, array('scheme' => 'https'))->generate('test',
-            array('name' => 'Fabien', 'locale' => 'fr'), UrlGeneratorInterface::NETWORK_PATH), 'absolute URL because scheme requirement does not match context'
+        $this->assertSame('http://fr.example.com/app.php/Fabien', $this->getGenerator($routes, ['scheme' => 'https'])->generate('test',
+            ['name' => 'Fabien', 'locale' => 'fr'], UrlGeneratorInterface::NETWORK_PATH), 'absolute URL because scheme requirement does not match context'
         );
         $this->assertSame('http://fr.example.com/app.php/Fabien', $this->getGenerator($routes)->generate('test',
-            array('name' => 'Fabien', 'locale' => 'fr'), UrlGeneratorInterface::ABSOLUTE_URL), 'absolute URL with same scheme because it is requested'
+            ['name' => 'Fabien', 'locale' => 'fr'], UrlGeneratorInterface::ABSOLUTE_URL), 'absolute URL with same scheme because it is requested'
         );
     }
 
@@ -533,32 +533,32 @@ public function testGenerateRelativePath()
         $routes = new RouteCollection();
         $routes->add('article', new Route('/{author}/{article}/'));
         $routes->add('comments', new Route('/{author}/{article}/comments'));
-        $routes->add('host', new Route('/{article}', array(), array(), array(), '{author}.example.com'));
-        $routes->add('scheme', new Route('/{author}/blog', array(), array(), array(), '', array('https')));
+        $routes->add('host', new Route('/{article}', [], [], [], '{author}.example.com'));
+        $routes->add('scheme', new Route('/{author}/blog', [], [], [], '', ['https']));
         $routes->add('unrelated', new Route('/about'));
 
-        $generator = $this->getGenerator($routes, array('host' => 'example.com', 'pathInfo' => '/fabien/symfony-is-great/'));
+        $generator = $this->getGenerator($routes, ['host' => 'example.com', 'pathInfo' => '/fabien/symfony-is-great/']);
 
         $this->assertSame('comments', $generator->generate('comments',
-            array('author' => 'fabien', 'article' => 'symfony-is-great'), UrlGeneratorInterface::RELATIVE_PATH)
+            ['author' => 'fabien', 'article' => 'symfony-is-great'], UrlGeneratorInterface::RELATIVE_PATH)
         );
         $this->assertSame('comments?page=2', $generator->generate('comments',
-            array('author' => 'fabien', 'article' => 'symfony-is-great', 'page' => 2), UrlGeneratorInterface::RELATIVE_PATH)
+            ['author' => 'fabien', 'article' => 'symfony-is-great', 'page' => 2], UrlGeneratorInterface::RELATIVE_PATH)
         );
         $this->assertSame('../twig-is-great/', $generator->generate('article',
-            array('author' => 'fabien', 'article' => 'twig-is-great'), UrlGeneratorInterface::RELATIVE_PATH)
+            ['author' => 'fabien', 'article' => 'twig-is-great'], UrlGeneratorInterface::RELATIVE_PATH)
         );
         $this->assertSame('../../bernhard/forms-are-great/', $generator->generate('article',
-            array('author' => 'bernhard', 'article' => 'forms-are-great'), UrlGeneratorInterface::RELATIVE_PATH)
+            ['author' => 'bernhard', 'article' => 'forms-are-great'], UrlGeneratorInterface::RELATIVE_PATH)
         );
         $this->assertSame('//bernhard.example.com/app.php/forms-are-great', $generator->generate('host',
-            array('author' => 'bernhard', 'article' => 'forms-are-great'), UrlGeneratorInterface::RELATIVE_PATH)
+            ['author' => 'bernhard', 'article' => 'forms-are-great'], UrlGeneratorInterface::RELATIVE_PATH)
         );
         $this->assertSame('https://example.com/app.php/bernhard/blog', $generator->generate('scheme',
-                array('author' => 'bernhard'), UrlGeneratorInterface::RELATIVE_PATH)
+                ['author' => 'bernhard'], UrlGeneratorInterface::RELATIVE_PATH)
         );
         $this->assertSame('../../about', $generator->generate('unrelated',
-            array(), UrlGeneratorInterface::RELATIVE_PATH)
+            [], UrlGeneratorInterface::RELATIVE_PATH)
         );
     }
 
@@ -572,138 +572,138 @@ public function testGetRelativePath($sourcePath, $targetPath, $expectedPath)
 
     public function provideRelativePaths()
     {
-        return array(
-            array(
+        return [
+            [
                 '/same/dir/',
                 '/same/dir/',
                 '',
-            ),
-            array(
+            ],
+            [
                 '/same/file',
                 '/same/file',
                 '',
-            ),
-            array(
+            ],
+            [
                 '/',
                 '/file',
                 'file',
-            ),
-            array(
+            ],
+            [
                 '/',
                 '/dir/file',
                 'dir/file',
-            ),
-            array(
+            ],
+            [
                 '/dir/file.html',
                 '/dir/different-file.html',
                 'different-file.html',
-            ),
-            array(
+            ],
+            [
                 '/same/dir/extra-file',
                 '/same/dir/',
                 './',
-            ),
-            array(
+            ],
+            [
                 '/parent/dir/',
                 '/parent/',
                 '../',
-            ),
-            array(
+            ],
+            [
                 '/parent/dir/extra-file',
                 '/parent/',
                 '../',
-            ),
-            array(
+            ],
+            [
                 '/a/b/',
                 '/x/y/z/',
                 '../../x/y/z/',
-            ),
-            array(
+            ],
+            [
                 '/a/b/c/d/e',
                 '/a/c/d',
                 '../../../c/d',
-            ),
-            array(
+            ],
+            [
                 '/a/b/c//',
                 '/a/b/c/',
                 '../',
-            ),
-            array(
+            ],
+            [
                 '/a/b/c/',
                 '/a/b/c//',
                 './/',
-            ),
-            array(
+            ],
+            [
                 '/root/a/b/c/',
                 '/root/x/b/c/',
                 '../../../x/b/c/',
-            ),
-            array(
+            ],
+            [
                 '/a/b/c/d/',
                 '/a',
                 '../../../../a',
-            ),
-            array(
+            ],
+            [
                 '/special-chars/sp%20ce/1€/mäh/e=mc²',
                 '/special-chars/sp%20ce/1€/<µ>/e=mc²',
                 '../<µ>/e=mc²',
-            ),
-            array(
+            ],
+            [
                 'not-rooted',
                 'dir/file',
                 'dir/file',
-            ),
-            array(
+            ],
+            [
                 '//dir/',
                 '',
                 '../../',
-            ),
-            array(
+            ],
+            [
                 '/dir/',
                 '/dir/file:with-colon',
                 './file:with-colon',
-            ),
-            array(
+            ],
+            [
                 '/dir/',
                 '/dir/subdir/file:with-colon',
                 'subdir/file:with-colon',
-            ),
-            array(
+            ],
+            [
                 '/dir/',
                 '/dir/:subdir/',
                 './:subdir/',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testFragmentsCanBeAppendedToUrls()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
 
-        $url = $this->getGenerator($routes)->generate('test', array('_fragment' => 'frag ment'), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $url = $this->getGenerator($routes)->generate('test', ['_fragment' => 'frag ment'], UrlGeneratorInterface::ABSOLUTE_PATH);
         $this->assertEquals('/app.php/testing#frag%20ment', $url);
 
-        $url = $this->getGenerator($routes)->generate('test', array('_fragment' => '0'), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $url = $this->getGenerator($routes)->generate('test', ['_fragment' => '0'], UrlGeneratorInterface::ABSOLUTE_PATH);
         $this->assertEquals('/app.php/testing#0', $url);
     }
 
     public function testFragmentsDoNotEscapeValidCharacters()
     {
         $routes = $this->getRoutes('test', new Route('/testing'));
-        $url = $this->getGenerator($routes)->generate('test', array('_fragment' => '?/'), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $url = $this->getGenerator($routes)->generate('test', ['_fragment' => '?/'], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('/app.php/testing#?/', $url);
     }
 
     public function testFragmentsCanBeDefinedAsDefaults()
     {
-        $routes = $this->getRoutes('test', new Route('/testing', array('_fragment' => 'fragment')));
-        $url = $this->getGenerator($routes)->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $routes = $this->getRoutes('test', new Route('/testing', ['_fragment' => 'fragment']));
+        $url = $this->getGenerator($routes)->generate('test', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('/app.php/testing#fragment', $url);
     }
 
-    protected function getGenerator(RouteCollection $routes, array $parameters = array(), $logger = null)
+    protected function getGenerator(RouteCollection $routes, array $parameters = [], $logger = null)
     {
         $context = new RequestContext('/app.php');
         foreach ($parameters as $key => $value) {
diff --git a/src/Symfony/Component/Routing/Tests/Loader/AbstractAnnotationLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/AbstractAnnotationLoaderTest.php
index e8bbe8fcf43e..0ce4a47ec131 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/AbstractAnnotationLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/AbstractAnnotationLoaderTest.php
@@ -26,7 +26,7 @@ public function getReader()
     public function getClassLoader($reader)
     {
         return $this->getMockBuilder('Symfony\Component\Routing\Loader\AnnotationClassLoader')
-            ->setConstructorArgs(array($reader))
+            ->setConstructorArgs([$reader])
             ->getMockForAbstractClass()
         ;
     }
diff --git a/src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php
index a0230ada88ec..c11ae81e214c 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php
@@ -52,15 +52,15 @@ public function testSupportsChecksResource($resource, $expectedSupports)
 
     public function provideTestSupportsChecksResource()
     {
-        return array(
-            array('class', true),
-            array('\fully\qualified\class\name', true),
-            array('namespaced\class\without\leading\slash', true),
-            array('ÿClassWithLegalSpecialCharacters', true),
-            array('5', false),
-            array('foo.foo', false),
-            array(null, false),
-        );
+        return [
+            ['class', true],
+            ['\fully\qualified\class\name', true],
+            ['namespaced\class\without\leading\slash', true],
+            ['ÿClassWithLegalSpecialCharacters', true],
+            ['5', false],
+            ['foo.foo', false],
+            [null, false],
+        ];
     }
 
     public function testSupportsChecksTypeIfSpecified()
@@ -71,55 +71,55 @@ public function testSupportsChecksTypeIfSpecified()
 
     public function getLoadTests()
     {
-        return array(
-            array(
+        return [
+            [
                 'Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BarClass',
-                array('name' => 'route1', 'path' => '/path'),
-                array('arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'),
-            ),
-            array(
+                ['name' => 'route1', 'path' => '/path'],
+                ['arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'],
+            ],
+            [
                 'Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BarClass',
-                array('defaults' => array('arg2' => 'foo'), 'requirements' => array('arg3' => '\w+')),
-                array('arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'),
-            ),
-            array(
+                ['defaults' => ['arg2' => 'foo'], 'requirements' => ['arg3' => '\w+']],
+                ['arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'],
+            ],
+            [
                 'Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BarClass',
-                array('options' => array('foo' => 'bar')),
-                array('arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'),
-            ),
-            array(
+                ['options' => ['foo' => 'bar']],
+                ['arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'],
+            ],
+            [
                 'Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BarClass',
-                array('schemes' => array('https'), 'methods' => array('GET')),
-                array('arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'),
-            ),
-            array(
+                ['schemes' => ['https'], 'methods' => ['GET']],
+                ['arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'],
+            ],
+            [
                 'Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BarClass',
-                array('condition' => 'context.getMethod() == "GET"'),
-                array('arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'),
-            ),
-        );
+                ['condition' => 'context.getMethod() == "GET"'],
+                ['arg2' => 'defaultValue2', 'arg3' => 'defaultValue3'],
+            ],
+        ];
     }
 
     /**
      * @dataProvider getLoadTests
      */
-    public function testLoad($className, $routeData = array(), $methodArgs = array())
+    public function testLoad($className, $routeData = [], $methodArgs = [])
     {
- 
10000
       $routeData = array_replace(array(
+        $routeData = array_replace([
             'name' => 'route',
             'path' => '/',
-            'requirements' => array(),
-            'options' => array(),
-            'defaults' => array(),
-            'schemes' => array(),
-            'methods' => array(),
+            'requirements' => [],
+            'options' => [],
+            'defaults' => [],
+            'schemes' => [],
+            'methods' => [],
             'condition' => '',
-        ), $routeData);
+        ], $routeData);
 
         $this->reader
             ->expects($this->once())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array($this->getAnnotatedRoute($routeData))))
+            ->will($this->returnValue([$this->getAnnotatedRoute($routeData)]))
         ;
 
         $routeCollection = $this->loader->load($className);
@@ -148,19 +148,19 @@ public function testLoad($className, $routeData = array(), $methodArgs = array()
 
     public function testClassRouteLoad()
     {
-        $classRouteData = array(
+        $classRouteData = [
             'name' => 'prefix_',
             'path' => '/prefix',
-            'schemes' => array('https'),
-            'methods' => array('GET'),
-        );
+            'schemes' => ['https'],
+            'methods' => ['GET'],
+        ];
 
-        $methodRouteData = array(
+        $methodRouteData = [
             'name' => 'route1',
             'path' => '/path',
-            'schemes' => array('http'),
-            'methods' => array('POST', 'PUT'),
-        );
+            'schemes' => ['http'],
+            'methods' => ['POST', 'PUT'],
+        ];
 
         $this->reader
             ->expects($this->once())
@@ -170,7 +170,7 @@ public function testClassRouteLoad()
         $this->reader
             ->expects($this->once())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array($this->getAnnotatedRoute($methodRouteData))))
+            ->will($this->returnValue([$this->getAnnotatedRoute($methodRouteData)]))
         ;
 
         $routeCollection = $this->loader->load('Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BarClass');
@@ -183,22 +183,22 @@ public function testClassRouteLoad()
 
     public function testInvokableClassRouteLoadWithMethodAnnotation()
     {
-        $classRouteData = array(
+        $classRouteData = [
             'name' => 'route1',
             'path' => '/',
-            'schemes' => array('https'),
-            'methods' => array('GET'),
-        );
+            'schemes' => ['https'],
+            'methods' => ['GET'],
+        ];
 
         $this->reader
             ->expects($this->exactly(1))
             ->method('getClassAnnotations')
-            ->will($this->returnValue(array($this->getAnnotatedRoute($classRouteData))))
+            ->will($this->returnValue([$this->getAnnotatedRoute($classRouteData)]))
         ;
         $this->reader
             ->expects($this->once())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $routeCollection = $this->loader->load('Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BazClass');
@@ -211,12 +211,12 @@ public function testInvokableClassRouteLoadWithMethodAnnotation()
 
     public function testInvokableClassRouteLoadWithClassAnnotation()
     {
-        $classRouteData = array(
+        $classRouteData = [
             'name' => 'route1',
             'path' => '/',
-            'schemes' => array('https'),
-            'methods' => array('GET'),
-        );
+            'schemes' => ['https'],
+            'methods' => ['GET'],
+        ];
 
         $this->reader
             ->expects($this->exactly(1))
@@ -227,13 +227,13 @@ public function testInvokableClassRouteLoadWithClassAnnotation()
         $this->reader
             ->expects($this->exactly(1))
             ->method('getClassAnnotations')
-            ->will($this->returnValue(array($this->getAnnotatedRoute($classRouteData))))
+            ->will($this->returnValue([$this->getAnnotatedRoute($classRouteData)]))
         ;
 
         $this->reader
             ->expects($this->once())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $routeCollection = $this->loader->load('Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BazClass');
@@ -246,29 +246,29 @@ public function testInvokableClassRouteLoadWithClassAnnotation()
 
     public function testInvokableClassMultipleRouteLoad()
     {
-        $classRouteData1 = array(
+        $classRouteData1 = [
             'name' => 'route1',
             'path' => '/1',
-            'schemes' => array('https'),
-            'methods' => array('GET'),
-        );
+            'schemes' => ['https'],
+            'methods' => ['GET'],
+        ];
 
-        $classRouteData2 = array(
+        $classRouteData2 = [
             'name' => 'route2',
             'path' => '/2',
-            'schemes' => array('https'),
-            'methods' => array('GET'),
-        );
+            'schemes' => ['https'],
+            'methods' => ['GET'],
+        ];
 
         $this->reader
             ->expects($this->exactly(1))
             ->method('getClassAnnotations')
-            ->will($this->returnValue(array($this->getAnnotatedRoute($classRouteData1), $this->getAnnotatedRoute($classRouteData2))))
+            ->will($this->returnValue([$this->getAnnotatedRoute($classRouteData1), $this->getAnnotatedRoute($classRouteData2)]))
         ;
         $this->reader
             ->expects($this->once())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $routeCollection = $this->loader->load('Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BazClass');
@@ -287,19 +287,19 @@ public function testInvokableClassMultipleRouteLoad()
 
     public function testInvokableClassWithMethodRouteLoad()
     {
-        $classRouteData = array(
+        $classRouteData = [
             'name' => 'route1',
             'path' => '/prefix',
-            'schemes' => array('https'),
-            'methods' => array('GET'),
-        );
+            'schemes' => ['https'],
+            'methods' => ['GET'],
+        ];
 
-        $methodRouteData = array(
+        $methodRouteData = [
             'name' => 'route2',
             'path' => '/path',
-            'schemes' => array('http'),
-            'methods' => array('POST', 'PUT'),
-        );
+            'schemes' => ['http'],
+            'methods' => ['POST', 'PUT'],
+        ];
 
         $this->reader
             ->expects($this->once())
@@ -309,7 +309,7 @@ public function testInvokableClassWithMethodRouteLoad()
         $this->reader
             ->expects($this->once())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array($this->getAnnotatedRoute($methodRouteData))))
+            ->will($this->returnValue([$this->getAnnotatedRoute($methodRouteData)]))
         ;
 
         $routeCollection = $this->loader->load('Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BazClass');
diff --git a/src/Symfony/Component/Routing/Tests/Loader/AnnotationDirectoryLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/AnnotationDirectoryLoaderTest.php
index 901b858d91cd..ac25493481ef 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/AnnotationDirectoryLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/AnnotationDirectoryLoaderTest.php
@@ -34,13 +34,13 @@ public function testLoad()
         $this->reader
             ->expects($this->any())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $this->reader
             ->expects($this->any())
             ->method('getClassAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $this->loader->load(__DIR__.'/../Fixtures/AnnotatedClasses');
@@ -48,22 +48,22 @@ public function testLoad()
 
     public function testLoadIgnoresHiddenDirectories()
     {
-        $this->expectAnnotationsToBeReadFrom(array(
+        $this->expectAnnotationsToBeReadFrom([
             'Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BarClass',
             'Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\BazClass',
             'Symfony\Component\Routing\Tests\Fixtures\AnnotatedClasses\FooClass',
-        ));
+        ]);
 
         $this->reader
             ->expects($this->any())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $this->reader
             ->expects($this->any())
             ->method('getClassAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $this->loader->load(__DIR__.'/../Fixtures/AnnotatedClasses');
@@ -92,7 +92,7 @@ public function testLoadFileIfLocatedResourceIsFile()
         $this->reader
             ->expects($this->any())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $this->loader->load(__DIR__.'/../Fixtures/AnnotatedClasses/FooClass.php');
diff --git a/src/Symfony/Component/Routing/Tests/Loader/AnnotationFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/AnnotationFileLoaderTest.php
index e0a95c8c0115..26a897ea6483 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/AnnotationFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/AnnotationFileLoaderTest.php
@@ -59,10 +59,10 @@ public function testLoadFileWithoutStartTag()
      */
     public function testLoadVariadic()
     {
-        $route = new Route(array('path' => '/path/to/{id}'));
+        $route = new Route(['path' => '/path/to/{id}']);
         $this->reader->expects($this->once())->method('getClassAnnotation');
         $this->reader->expects($this->once())->method('getMethodAnnotations')
-            ->will($this->returnValue(array($route)));
+            ->will($this->returnValue([$route]));
 
         $this->loader->load(__DIR__.'/../Fixtures/OtherAnnotatedClasses/VariadicClass.php');
     }
diff --git a/src/Symfony/Component/Routing/Tests/Loader/DirectoryLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/DirectoryLoaderTest.php
index 45968551b245..2657751b38cd 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/DirectoryLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/DirectoryLoaderTest.php
@@ -30,11 +30,11 @@ protected function setUp()
         $locator = new FileLocator();
         $this->reader = $this->getReader();
         $this->loader = new DirectoryLoader($locator);
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new YamlFileLoader($locator),
             new AnnotationFileLoader($locator, $this->getClassLoader($this->reader)),
             $this->loader,
-        ));
+        ]);
         $this->loader->setResolver($resolver);
     }
 
diff --git a/src/Symfony/Component/Routing/Tests/Loader/ObjectRouteLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/ObjectRouteLoaderTest.php
index 408fa0b45c48..89dcd5ba3f11 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/ObjectRouteLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/ObjectRouteLoaderTest.php
@@ -26,9 +26,9 @@ public function testLoadCallsServiceAndReturnsCollection()
         $collection = new RouteCollection();
         $collection->add('foo', new Route('/foo'));
 
-        $loader->loaderMap = array(
+        $loader->loaderMap = [
             'my_route_provider_service' => new RouteService($collection),
-        );
+        ];
 
         $actualRoutes = $loader->load(
             'my_route_provider_service:loadRoutes',
@@ -52,11 +52,11 @@ public function testExceptionWithoutSyntax($resourceString)
 
     public function getBadResourceStrings()
     {
-        return array(
-            array('Foo'),
-            array('Bar::baz'),
-            array('Foo:Bar:baz'),
-        );
+        return [
+            ['Foo'],
+            ['Bar::baz'],
+            ['Foo:Bar:baz'],
+        ];
     }
 
     /**
@@ -65,7 +65,7 @@ public function getBadResourceStrings()
     public function testExceptionOnNoObjectReturned()
     {
         $loader = new ObjectRouteLoaderForTest();
-        $loader->loaderMap = array('my_service' => 'NOT_AN_OBJECT');
+        $loader->loaderMap = ['my_service' => 'NOT_AN_OBJECT'];
         $loader->load('my_service:method');
     }
 
@@ -75,7 +75,7 @@ public function testExceptionOnNoObjectReturned()
     public function testExceptionOnBadMethod()
     {
         $loader = new ObjectRouteLoaderForTest();
-        $loader->loaderMap = array('my_service' => new \stdClass());
+        $loader->loaderMap = ['my_service' => new \stdClass()];
         $loader->load('my_service:method');
     }
 
@@ -85,21 +85,21 @@ public function testExceptionOnBadMethod()
     public function testExceptionOnMethodNotReturningCollection()
     {
         $service = $this->getMockBuilder('stdClass')
-            ->setMethods(array('loadRoutes'))
+            ->setMethods(['loadRoutes'])
             ->getMock();
         $service->expects($this->once())
             ->method('loadRoutes')
             ->will($this->returnValue('NOT_A_COLLECTION'));
 
         $loader = new ObjectRouteLoaderForTest();
-        $loader->loaderMap = array('my_service' => $service);
+        $loader->loaderMap = ['my_service' => $service];
         $loader->load('my_service:loadRoutes');
     }
 }
 
 class ObjectRouteLoaderForTest extends ObjectRouteLoader
 {
-    public $loaderMap = array();
+    public $loaderMap = [];
 
     protected function getServiceObject($id)
     {
diff --git a/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
index 0dcf5d4941be..3e1f1ec2f111 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
@@ -33,7 +33,7 @@ public function testSupports()
 
     public function testLoadWithRoute()
     {
-        $loader = new PhpFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new PhpFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('validpattern.php');
         $routes = $routeCollection->all();
 
@@ -45,14 +45,14 @@ public function testLoadWithRoute()
             $this->assertSame('MyBlogBundle:Blog:show', $route->getDefault('_controller'));
             $this->assertSame('{locale}.example.com', $route->getHost());
             $this->assertSame('RouteCompiler', $route->getOption('compiler_class'));
-            $this->assertEquals(array('GET', 'POST', 'PUT', 'OPTIONS'), $route->getMethods());
-            $this->assertEquals(array('https'), $route->getSchemes());
+            $this->assertEquals(['GET', 'POST', 'PUT', 'OPTIONS'], $route->getMethods());
+            $this->assertEquals(['https'], $route->getSchemes());
         }
     }
 
     public function testLoadWithImport()
     {
-        $loader = new PhpFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new PhpFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('validresource.php');
         $routes = $routeCollection->all();
 
@@ -64,14 +64,14 @@ public function testLoadWithImport()
             $this->assertSame('MyBlogBundle:Blog:show', $route->getDefault('_controller'));
             $this->assertSame('{locale}.example.com', $route->getHost());
             $this->assertSame('RouteCompiler', $route->getOption('compiler_class'));
-            $this->assertEquals(array('GET', 'POST', 'PUT', 'OPTIONS'), $route->getMethods());
-            $this->assertEquals(array('https'), $route->getSchemes());
+            $this->assertEquals(['GET', 'POST', 'PUT', 'OPTIONS'], $route->getMethods());
+            $this->assertEquals(['https'], $route->getSchemes());
         }
     }
 
     public function testThatDefiningVariableInConfigFileHasNoSideEffects()
     {
-        $locator = new FileLocator(array(__DIR__.'/../Fixtures'));
+        $locator = new FileLocator([__DIR__.'/../Fixtures']);
         $loader = new PhpFileLoader($locator);
         $routeCollection = $loader->load('with_define_path_variable.php');
         $resources = $routeCollection->getResources();
@@ -86,30 +86,30 @@ public function testThatDefiningVariableInConfigFileHasNoSideEffects()
 
     public function testRoutingConfigurator()
     {
-        $locator = new FileLocator(array(__DIR__.'/../Fixtures'));
+        $locator = new FileLocator([__DIR__.'/../Fixtures']);
         $loader = new PhpFileLoader($locator);
         $routeCollection = $loader->load('php_dsl.php');
 
         $expectedCollection = new RouteCollection();
 
         $expectedCollection->add('foo', (new Route('/foo'))
-            ->setOptions(array('utf8' => true))
+            ->setOptions(['utf8' => true])
             ->setCondition('abc')
         );
         $expectedCollection->add('buz', (new Route('/zub'))
-            ->setDefaults(array('_controller' => 'foo:act'))
+            ->setDefaults(['_controller' => 'foo:act'])
         );
         $expectedCollection->add('c_bar', (new Route('/sub/pub/bar'))
-            ->setRequirements(array('id' => '\d+'))
+            ->setRequirements(['id' => '\d+'])
         );
         $expectedCollection->add('c_pub_buz', (new Route('/sub/pub/buz'))
             ->setHost('host')
-            ->setRequirements(array('id' => '\d+'))
+            ->setRequirements(['id' => '\d+'])
         );
         $expectedCollection->add('ouf', (new Route('/ouf'))
-            ->setSchemes(array('https'))
-            ->setMethods(array('GET'))
-            ->setDefaults(array('id' => 0))
+            ->setSchemes(['https'])
+            ->setMethods(['GET'])
+            ->setDefaults(['id' => 0])
         );
 
         $expectedCollection->addResource(new FileResource(realpath(__DIR__.'/../Fixtures/php_dsl_sub.php')));
@@ -120,7 +120,7 @@ public function testRoutingConfigurator()
 
     public function testRoutingConfiguratorCanImportGlobPatterns()
     {
-        $locator = new FileLocator(array(__DIR__.'/../Fixtures/glob'));
+        $locator = new FileLocator([__DIR__.'/../Fixtures/glob']);
         $loader = new PhpFileLoader($locator);
         $routeCollection = $loader->load('php_dsl.php');
 
diff --git a/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
index 21fc3400f249..66588e7e900a 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
@@ -31,7 +31,7 @@ public function testSupports()
 
     public function testLoadWithRoute()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('validpattern.xml');
         $route = $routeCollection->get('blog_show');
 
@@ -41,14 +41,14 @@ public function testLoadWithRoute()
         $this->assertSame('MyBundle:Blog:show', $route->getDefault('_controller'));
         $this->assertSame('\w+', $route->getRequirement('locale'));
         $this->assertSame('RouteCompiler', $route->getOption('compiler_class'));
-        $this->assertEquals(array('GET', 'POST', 'PUT', 'OPTIONS'), $route->getMethods());
-        $this->assertEquals(array('https'), $route->getSchemes());
+        $this->assertEquals(['GET', 'POST', 'PUT', 'OPTIONS'], $route->getMethods());
+        $this->assertEquals(['https'], $route->getSchemes());
         $this->assertEquals('context.getMethod() == "GET"', $route->getCondition());
     }
 
     public function testLoadWithNamespacePrefix()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('namespaceprefix.xml');
 
         $this->assertCount(1, $routeCollection->all(), 'One route is loaded');
@@ -66,7 +66,7 @@ public function testLoadWithNamespacePrefix()
 
     public function testLoadWithImport()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('validresource.xml');
         $routes = $routeCollection->all();
 
@@ -89,7 +89,7 @@ public function testLoadWithImport()
      */
     public function testLoadThrowsExceptionWithInvalidFile($filePath)
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $loader->load($filePath);
     }
 
@@ -99,13 +99,13 @@ public function testLoadThrowsExceptionWithInvalidFile($filePath)
      */
     public function testLoadThrowsExceptionWithInvalidFileEvenWithoutSchemaValidation($filePath)
     {
-        $loader = new CustomXmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new CustomXmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $loader->load($filePath);
     }
 
     public function getPathsToInvalidFiles()
     {
-        return array(array('nonvalidnode.xml'), array('nonvalidroute.xml'), array('nonvalid.xml'), array('missing_id.xml'), array('missing_path.xml'));
+        return [['nonvalidnode.xml'], ['nonvalidroute.xml'], ['nonvalid.xml'], ['missing_id.xml'], ['missing_path.xml']];
     }
 
     /**
@@ -114,13 +114,13 @@ public function getPathsToInvalidFiles()
      */
     public function testDocTypeIsNotAllowed()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $loader->load('withdoctype.xml');
     }
 
     public function testNullValues()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('null_values.xml');
         $route = $routeCollection->get('blog_show');
 
@@ -134,12 +134,12 @@ public function testNullValues()
 
     public function testScalarDataTypeDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('scalar_defaults.xml');
         $route = $routeCollection->get('blog');
 
         $this->assertSame(
-            array(
+            [
                 '_controller' => 'AcmeBlogBundle:Blog:index',
                 'slug' => null,
                 'published' => true,
@@ -150,147 +150,147 @@ public function testScalarDataTypeDefaults()
                 'locked' => false,
                 'foo' => null,
                 'bar' => null,
-            ),
+            ],
             $route->getDefaults()
         );
     }
 
     public function testListDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('list_defaults.xml');
         $route = $routeCollection->get('blog');
 
         $this->assertSame(
-            array(
+            [
                 '_controller' => 'AcmeBlogBundle:Blog:index',
-                'values' => array(true, 1, 3.5, 'foo'),
-            ),
+                'values' => [true, 1, 3.5, 'foo'],
+            ],
             $route->getDefaults()
         );
     }
 
     public function testListInListDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('list_in_list_defaults.xml');
         $route = $routeCollection->get('blog');
 
         $this->assertSame(
-            array(
+            [
                 '_controller' => 'AcmeBlogBundle:Blog:index',
-                'values' => array(array(true, 1, 3.5, 'foo')),
-            ),
+                'values' => [[true, 1, 3.5, 'foo']],
+            ],
             $route->getDefaults()
         );
     }
 
     public function testListInMapDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('list_in_map_defaults.xml');
         $route = $routeCollection->get('blog');
 
         $this->assertSame(
-            array(
+            [
                 '_controller' => 'AcmeBlogBundle:Blog:index',
-                'values' => array('list' => array(true, 1, 3.5, 'foo')),
-            ),
+                'values' => ['list' => [true, 1, 3.5, 'foo']],
+            ],
             $route->getDefaults()
         );
     }
 
     public function testMapDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('map_defaults.xml');
         $route = $routeCollection->get('blog');
 
         $this->assertSame(
-            array(
+            [
                 '_controller' => 'AcmeBlogBundle:Blog:index',
-                'values' => array(
+                'values' => [
                     'public' => true,
                     'page' => 1,
                     'price' => 3.5,
                     'title' => 'foo',
-                ),
-            ),
+                ],
+            ],
             $route->getDefaults()
         );
     }
 
     public function testMapInListDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('map_in_list_defaults.xml');
         $route = $routeCollection->get('blog');
 
         $this->assertSame(
-            array(
+            [
                 '_controller' => 'AcmeBlogBundle:Blog:index',
-                'values' => array(array(
+                'values' => [[
                     'public' => true,
                     'page' => 1,
                     'price' => 3.5,
                     'title' => 'foo',
-                )),
-            ),
+                ]],
+            ],
             $route->getDefaults()
         );
     }
 
     public function testMapInMapDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('map_in_map_defaults.xml');
         $route = $routeCollection->get('blog');
 
         $this->assertSame(
-            array(
+            [
                 '_controller' => 'AcmeBlogBundle:Blog:index',
-                'values' => array('map' => array(
+                'values' => ['map' => [
                     'public' => true,
                     'page' => 1,
                     'price' => 3.5,
                     'title' => 'foo',
-                )),
-            ),
+                ]],
+            ],
             $route->getDefaults()
         );
     }
 
     public function testNullValuesInList()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('list_null_values.xml');
         $route = $routeCollection->get('blog');
 
-        $this->assertSame(array(null, null, null, null, null, null), $route->getDefault('list'));
+        $this->assertSame([null, null, null, null, null, null], $route->getDefault('list'));
     }
 
     public function testNullValuesInMap()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('map_null_values.xml');
         $route = $routeCollection->get('blog');
 
         $this->assertSame(
-            array(
+            [
                 'boolean' => null,
                 'integer' => null,
                 'float' => null,
                 'string' => null,
                 'list' => null,
                 'map' => null,
-            ),
+            ],
             $route->getDefault('map')
         );
     }
 
     public function testLoadRouteWithControllerAttribute()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $routeCollection = $loader->load('routing.xml');
 
         $route = $routeCollection->get('app_homepage');
@@ -300,7 +300,7 @@ public function testLoadRouteWithControllerAttribute()
 
     public function testLoadRouteWithoutControllerAttribute()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $routeCollection = $loader->load('routing.xml');
 
         $route = $routeCollection->get('app_logout');
@@ -310,7 +310,7 @@ public function testLoadRouteWithoutControllerAttribute()
 
     public function testLoadRouteWithControllerSetInDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $routeCollection = $loader->load('routing.xml');
 
         $route = $routeCollection->get('app_blog');
@@ -324,7 +324,7 @@ public function testLoadRouteWithControllerSetInDefaults()
      */
     public function testOverrideControllerInDefaults()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $loader->load('override_defaults.xml');
     }
 
@@ -333,7 +333,7 @@ public function testOverrideControllerInDefaults()
      */
     public function testImportRouteWithController($file)
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $routeCollection = $loader->load($file);
 
         $route = $routeCollection->get('app_homepage');
@@ -348,8 +348,8 @@ public function testImportRouteWithController($file)
 
     public function provideFilesImportingRoutesWithControllers()
     {
-        yield array('import_controller.xml');
-        yield array('import__controller.xml');
+        yield ['import_controller.xml'];
+        yield ['import__controller.xml'];
     }
 
     /**
@@ -358,13 +358,13 @@ public function provideFilesImportingRoutesWithControllers()
      */
     public function testImportWithOverriddenController()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $loader->load('import_override_defaults.xml');
     }
 
     public function testImportRouteWithGlobMatchingSingleFile()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/glob')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/glob']));
         $routeCollection = $loader->load('import_single.xml');
 
         $route = $routeCollection->get('bar_route');
@@ -373,7 +373,7 @@ public function testImportRouteWithGlobMatchingSingleFile()
 
     public function testImportRouteWithGlobMatchingMultipleFiles()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/glob')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/glob']));
         $routeCollection = $loader->load('import_multiple.xml');
 
         $route = $routeCollection->get('bar_route');
diff --git a/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
index a89c58443f7d..4944e5b63651 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
@@ -33,11 +33,11 @@ public function testSupports()
 
     public function testLoadDoesNothingIfEmpty()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $collection = $loader->load('empty.yml');
 
-        $this->assertEquals(array(), $collection->all());
-        $this->assertEquals(array(new FileResource(realpath(__DIR__.'/../Fixtures/empty.yml'))), $collection->getResources());
+        $this->assertEquals([], $collection->all());
+        $this->assertEquals([new FileResource(realpath(__DIR__.'/../Fixtures/empty.yml'))], $collection->getResources());
     }
 
     /**
@@ -46,26 +46,26 @@ public function testLoadDoesNothingIfEmpty()
      */
     public function testLoadThrowsExceptionWithInvalidFile($filePath)
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $loader->load($filePath);
     }
 
     public function getPathsToInvalidFiles()
     {
-        return array(
-            array('nonvalid.yml'),
-            array('nonvalid2.yml'),
-            array('incomplete.yml'),
-            array('nonvalidkeys.yml'),
-            array('nonesense_resource_plus_path.yml'),
-            array('nonesense_type_without_resource.yml'),
-            array('bad_format.yml'),
-        );
+        return [
+            ['nonvalid.yml'],
+            ['nonvalid2.yml'],
+            ['incomplete.yml'],
+            ['nonvalidkeys.yml'],
+            ['nonesense_resource_plus_path.yml'],
+            ['nonesense_type_without_resource.yml'],
+            ['bad_format.yml'],
+        ];
     }
 
     public function testLoadSpecialRouteName()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('special_route_name.yml');
         $route = $routeCollection->get('#$péß^a|');
 
@@ -75,7 +75,7 @@ public function testLoadSpecialRouteName()
 
     public function testLoadWithRoute()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('validpattern.yml');
         $route = $routeCollection->get('blog_show');
 
@@ -85,14 +85,14 @@ public function testLoadWithRoute()
         $this->assertSame('MyBundle:Blog:show', $route->getDefault('_controller'));
         $this->assertSame('\w+', $route->getRequirement('locale'));
         $this->assertSame('RouteCompiler', $route->getOption('compiler_class'));
-        $this->assertEquals(array('GET', 'POST', 'PUT', 'OPTIONS'), $route->getMethods());
-        $this->assertEquals(array('https'), $route->getSchemes());
+        $this->assertEquals(['GET', 'POST', 'PUT', 'OPTIONS'], $route->getMethods());
+        $this->assertEquals(['https'], $route->getSchemes());
         $this->assertEquals('context.getMethod() == "GET"', $route->getCondition());
     }
 
     public function testLoadWithResource()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('validresource.yml');
         $routes = $routeCollection->all();
 
@@ -111,7 +111,7 @@ public function testLoadWithResource()
 
     public function testLoadRouteWithControllerAttribute()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $routeCollection = $loader->load('routing.yml');
 
         $route = $routeCollection->get('app_homepage');
@@ -121,7 +121,7 @@ public function testLoadRouteWithControllerAttribute()
 
     public function testLoadRouteWithoutControllerAttribute()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $routeCollection = $loader->load('routing.yml');
 
         $route = $routeCollection->get('app_logout');
@@ -131,7 +131,7 @@ public function testLoadRouteWithoutControllerAttribute()
 
     public function testLoadRouteWithControllerSetInDefaults()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $routeCollection = $loader->load('routing.yml');
 
         $route = $routeCollection->get('app_blog');
@@ -145,7 +145,7 @@ public function testLoadRouteWithControllerSetInDefaults()
      */
     public function testOverrideControllerInDefaults()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $loader->load('override_defaults.yml');
     }
 
@@ -154,7 +154,7 @@ public function testOverrideControllerInDefaults()
      */
     public function testImportRouteWithController($file)
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $routeCollection = $loader->load($file);
 
         $route = $routeCollection->get('app_homepage');
@@ -169,8 +169,8 @@ public function testImportRouteWithController($file)
 
     public function provideFilesImportingRoutesWithControllers()
     {
-        yield array('import_controller.yml');
-        yield array('import__controller.yml');
+        yield ['import_controller.yml'];
+        yield ['import__controller.yml'];
     }
 
     /**
@@ -179,13 +179,13 @@ public function provideFilesImportingRoutesWithControllers()
      */
     public function testImportWithOverriddenController()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/controller')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/controller']));
         $loader->load('import_override_defaults.yml');
     }
 
     public function testImportRouteWithGlobMatchingSingleFile()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/glob')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/glob']));
         $routeCollection = $loader->load('import_single.yml');
 
         $route = $routeCollection->get('bar_route');
@@ -194,7 +194,7 @@ public function testImportRouteWithGlobMatchingSingleFile()
 
     public function testImportRouteWithGlobMatchingMultipleFiles()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/glob')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/glob']));
         $routeCollection = $loader->load('import_multiple.yml');
 
         $route = $routeCollection->get('bar_route');
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/DumpedRedirectableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/DumpedRedirectableUrlMatcherTest.php
index 1785c3ad20f4..235e47768f50 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/DumpedRedirectableUrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/DumpedRedirectableUrlMatcherTest.php
@@ -25,11 +25,11 @@ protected function getUrlMatcher(RouteCollection $routes, RequestContext $contex
 
         $class = 'DumpedRedirectableUrlMatcher'.++$i;
         $dumper = new PhpMatcherDumper($routes);
-        eval('?>'.$dumper->dump(array('class' => $class, 'base_class' => 'Symfony\Component\Routing\Tests\Matcher\TestDumpedRedirectableUrlMatcher')));
+        eval('?>'.$dumper->dump(['class' => $class, 'base_class' => 'Symfony\Component\Routing\Tests\Matcher\TestDumpedRedirectableUrlMatcher']));
 
         return $this->getMockBuilder($class)
-            ->setConstructorArgs(array($context ?: new RequestContext()))
-            ->setMethods(array('redirect'))
+            ->setConstructorArgs([$context ?: new RequestContext()])
+            ->setMethods(['redirect'])
             ->getMock();
     }
 }
@@ -38,6 +38,6 @@ class TestDumpedRedirectableUrlMatcher extends UrlMatcher implements Redirectabl
 {
     public function redirect($path, $route, $scheme = null)
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/DumpedUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/DumpedUrlMatcherTest.php
index b00dfdf5fa8d..34946f3f2b26 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/DumpedUrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/DumpedUrlMatcherTest.php
@@ -41,7 +41,7 @@ protected function getUrlMatcher(RouteCollection $routes, RequestContext $contex
 
         $class = 'DumpedUrlMatcher'.++$i;
         $dumper = new PhpMatcherDumper($routes);
-        eval('?>'.$dumper->dump(array('class' => $class)));
+        eval('?>'.$dumper->dump(['class' => $class]));
 
         return new $class($context ?: new RequestContext());
     }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
index 68721bd63c51..2816567c1eea 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
@@ -54,11 +54,11 @@ public function testDumpWhenSchemeIsUsedWithoutAProperDumper()
         $collection = new RouteCollection();
         $collection->add('secure', new Route(
             '/secure',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array('https')
+            ['https']
         ));
         $dumper = new PhpMatcherDumper($collection);
         $dumper->dump();
@@ -72,11 +72,11 @@ public function testRedirectPreservesUrlEncoding()
         $class = $this->generateDumpedMatcher($collection, true);
 
         $matcher = $this->getMockBuilder($class)
-                        ->setMethods(array('redirect'))
-                        ->setConstructorArgs(array(new RequestContext()))
+                        ->setMethods(['redirect'])
+                        ->setConstructorArgs([new RequestContext()])
                         ->getMock();
 
-        $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/', 'foo')->willReturn(array());
+        $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/', 'foo')->willReturn([]);
 
         $matcher->match('/foo%3Abar');
     }
@@ -84,7 +84,7 @@ public function testRedirectPreservesUrlEncoding()
     /**
      * @dataProvider getRouteCollections
      */
-    public function testDump(RouteCollection $collection, $fixture, $options = array())
+    public function testDump(RouteCollection $collection, $fixture, $options = [])
     {
         $basePath = __DIR__.'/../../Fixtures/dumper/';
 
@@ -103,28 +103,28 @@ public function getRouteCollections()
         // defaults and requirements
         $collection->add('foo', new Route(
             '/foo/{bar}',
-            array('def' => 'test'),
-            array('bar' => 'baz|symfony')
+            ['def' => 'test'],
+            ['bar' => 'baz|symfony']
         ));
         // method requirement
         $collection->add('bar', new Route(
             '/bar/{foo}',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('GET', 'head')
+            [],
+            ['GET', 'head']
         ));
         // GET method requirement automatically adds HEAD as valid
         $collection->add('barhead', new Route(
             '/barhead/{foo}',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('GET')
+            [],
+            ['GET']
         ));
         // simple
         $collection->add('baz', new Route(
@@ -145,33 +145,33 @@ public function getRouteCollections()
         // trailing slash and method
         $collection->add('baz5', new Route(
             '/test/{foo}/',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('post')
+            [],
+            ['post']
         ));
         // complex name
         $collection->add('baz.baz6', new Route(
             '/test/{foo}/',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('put')
+            [],
+            ['put']
         ));
         // defaults without variable
         $collection->add('foofoo', new Route(
             '/foofoo',
-            array('def' => 'test')
+            ['def' => 'test']
         ));
         // pattern with quotes
         $collection->add('quoter', new Route(
             '/{quoter}',
-            array(),
-            array('quoter' => '[\']+')
+            [],
+            ['quoter' => '[\']+']
         ));
         // space in pattern
         $collection->add('space', new Route(
@@ -186,7 +186,7 @@ public function getRouteCollections()
         $collection1->addPrefix('/b\'b');
         $collection2 = new RouteCollection();
         $collection2->addCollection($collection1);
-        $collection2->add('overridden', new Route('/{var}', array(), array('var' => '.*')));
+        $collection2->add('overridden', new Route('/{var}', [], ['var' => '.*']));
         $collection1 = new RouteCollection();
         $collection1->add('foo2', new Route('/{foo1}'));
         $collection1->add('bar2', new Route('/{bar1}'));
@@ -198,7 +198,7 @@ public function getRouteCollections()
         // overridden through addCollection() and multiple sub-collections with no own prefix
         $collection1 = new RouteCollection();
         $collection1->add('overridden2', new Route('/old'));
-        $collection1->add('helloWorld', new Route('/hello/{who}', array('who' => 'World!')));
+        $collection1->add('helloWorld', new Route('/hello/{who}', ['who' => 'World!']));
         $collection2 = new RouteCollection();
         $collection3 = new RouteCollection();
         $collection3->add('overridden2', new Route('/new'));
@@ -229,22 +229,22 @@ public function getRouteCollections()
 
         $collection1 = new RouteCollection();
 
-        $route1 = new Route('/route1', array(), array(), array(), 'a.example.com');
+        $route1 = new Route('/route1', [], [], [], 'a.example.com');
         $collection1->add('route1', $route1);
 
-        $route2 = new Route('/c2/route2', array(), array(), array(), 'a.example.com');
+        $route2 = new Route('/c2/route2', [], [], [], 'a.example.com');
         $collection1->add('route2', $route2);
 
-        $route3 = new Route('/c2/route3', array(), array(), array(), 'b.example.com');
+        $route3 = new Route('/c2/route3', [], [], [], 'b.example.com');
         $collection1->add('route3', $route3);
 
-        $route4 = new Route('/route4', array(), array(), array(), 'a.example.com');
+        $route4 = new Route('/route4', [], [], [], 'a.example.com');
         $collection1->add('route4', $route4);
 
-        $route5 = new Route('/route5', array(), array(), array(), 'c.example.com');
+        $route5 = new Route('/route5', [], [], [], 'c.example.com');
         $collection1->add('route5', $route5);
 
-        $route6 = new Route('/route6', array(), array(), array(), null);
+        $route6 = new Route('/route6', [], [], [], null);
         $collection1->add('route6', $route6);
 
         $collection->addCollection($collection1);
@@ -253,25 +253,25 @@ public function getRouteCollections()
 
         $collection1 = new RouteCollection();
 
-        $route11 = new Route('/route11', array(), array(), array(), '{var1}.example.com');
+        $route11 = new Route('/route11', [], [], [], '{var1}.example.com');
         $collection1->add('route11', $route11);
 
-        $route12 = new Route('/route12', array('var1' => 'val'), array(), array(), '{var1}.example.com');
+        $route12 = new Route('/route12', ['var1' => 'val'], [], [], '{var1}.example.com');
         $collection1->add('route12', $route12);
 
-        $route13 = new Route('/route13/{name}', array(), array(), array(), '{var1}.example.com');
+        $route13 = new Route('/route13/{name}', [], [], [], '{var1}.example.com');
         $collection1->add('route13', $route13);
 
-        $route14 = new Route('/route14/{name}', array('var1' => 'val'), array(), array(), '{var1}.example.com');
+        $route14 = new Route('/route14/{name}', ['var1' => 'val'], [], [], '{var1}.example.com');
         $collection1->add('route14', $route14);
 
-        $route15 = new Route('/route15/{name}', array(), array(), array(), 'c.example.com');
+        $route15 = new Route('/route15/{name}', [], [], [], 'c.example.com');
         $collection1->add('route15', $route15);
 
-        $route16 = new Route('/route16/{name}', array('var1' => 'val'), array(), array(), null);
+        $route16 = new Route('/route16/{name}', ['var1' => 'val'], [], [], null);
         $collection1->add('route16', $route16);
 
-        $route17 = new Route('/route17', array(), array(), array(), null);
+        $route17 = new Route('/route17', [], [], [], null);
         $collection1->add('route17', $route17);
 
         $collection->addCollection($collection1);
@@ -297,21 +297,21 @@ public function getRouteCollections()
         // force HTTPS redirection
         $redirectCollection->add('secure', new Route(
             '/secure',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array('https')
+            ['https']
         ));
 
         // force HTTP redirection
         $redirectCollection->add('nonsecure', new Route(
             '/nonsecure',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array('http')
+            ['http']
         ));
 
         /* test case 3 */
@@ -328,57 +328,57 @@ public function getRouteCollections()
         $headMatchCasesCollection = new RouteCollection();
         $headMatchCasesCollection->add('just_head', new Route(
             '/just_head',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('HEAD')
+            [],
+            ['HEAD']
         ));
         $headMatchCasesCollection->add('head_and_get', new Route(
             '/head_and_get',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('HEAD', 'GET')
+            [],
+            ['HEAD', 'GET']
         ));
         $headMatchCasesCollection->add('get_and_head', new Route(
             '/get_and_head',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('GET', 'HEAD')
+            [],
+            ['GET', 'HEAD']
         ));
         $headMatchCasesCollection->add('post_and_head', new Route(
             '/post_and_head',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('POST', 'HEAD')
+            [],
+            ['POST', 'HEAD']
         ));
         $headMatchCasesCollection->add('put_and_post', new Route(
             '/put_and_post',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('PUT', 'POST')
+            [],
+            ['PUT', 'POST']
         ));
         $headMatchCasesCollection->add('put_and_get_and_head', new Route(
             '/put_and_post',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('PUT', 'GET', 'HEAD')
+            [],
+            ['PUT', 'GET', 'HEAD']
         ));
 
         /* test case 5 */
@@ -400,39 +400,39 @@ public function getRouteCollections()
         $groupOptimisedCollection->add('slashed_c', new Route('/slashed/group/c/'));
 
         $trailingSlashCollection = new RouteCollection();
-        $trailingSlashCollection->add('simple_trailing_slash_no_methods', new Route('/trailing/simple/no-methods/', array(), array(), array(), '', array(), array()));
-        $trailingSlashCollection->add('simple_trailing_slash_GET_method', new Route('/trailing/simple/get-method/', array(), array(), array(), '', array(), array('GET')));
-        $trailingSlashCollection->add('simple_trailing_slash_HEAD_method', new Route('/trailing/simple/head-method/', array(), array(), array(), '', array(), array('HEAD')));
-        $trailingSlashCollection->add('simple_trailing_slash_POST_method', new Route('/trailing/simple/post-method/', array(), array(), array(), '', array(), array('POST')));
-        $trailingSlashCollection->add('regex_trailing_slash_no_methods', new Route('/trailing/regex/no-methods/{param}/', array(), array(), array(), '', array(), array()));
-        $trailingSlashCollection->add('regex_trailing_slash_GET_method', new Route('/trailing/regex/get-method/{param}/', array(), array(), array(), '', array(), array('GET')));
-        $trailingSlashCollection->add('regex_trailing_slash_HEAD_method', new Route('/trailing/regex/head-method/{param}/', array(), array(), array(), '', array(), array('HEAD')));
-        $trailingSlashCollection->add('regex_trailing_slash_POST_method', new Route('/trailing/regex/post-method/{param}/', array(), array(), array(), '', array(), array('POST')));
-
-        $trailingSlashCollection->add('simple_not_trailing_slash_no_methods', new Route('/not-trailing/simple/no-methods', array(), array(), array(), '', array(), array()));
-        $trailingSlashCollection->add('simple_not_trailing_slash_GET_method', new Route('/not-trailing/simple/get-method', array(), array(), array(), '', array(), array('GET')));
-        $trailingSlashCollection->add('simple_not_trailing_slash_HEAD_method', new Route('/not-trailing/simple/head-method', array(), array(), array(), '', array(), array('HEAD')));
-        $trailingSlashCollection->add('simple_not_trailing_slash_POST_method', new Route('/not-trailing/simple/post-method', array(), array(), array(), '', array(), array('POST')));
-        $trailingSlashCollection->add('regex_not_trailing_slash_no_methods', new Route('/not-trailing/regex/no-methods/{param}', array(), array(), array(), '', array(), array()));
-        $trailingSlashCollection->add('regex_not_trailing_slash_GET_method', new Route('/not-trailing/regex/get-method/{param}', array(), array(), array(), '', array(), array('GET')));
-        $trailingSlashCollection->add('regex_not_trailing_slash_HEAD_method', new Route('/not-trailing/regex/head-method/{param}', array(), array(), array(), '', array(), array('HEAD')));
-        $trailingSlashCollection->add('regex_not_trailing_slash_POST_method', new Route('/not-trailing/regex/post-method/{param}', array(), array(), array(), '', array(), array('POST')));
-
-        return array(
-           array(new RouteCollection(), 'url_matcher0.php', array()),
-           array($collection, 'url_matcher1.php', array()),
-           array($redirectCollection, 'url_matcher2.php', array('base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher')),
-           array($rootprefixCollection, 'url_matcher3.php', array()),
-           array($headMatchCasesCollection, 'url_matcher4.php', array()),
-           array($groupOptimisedCollection, 'url_matcher5.php', array('base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher')),
-           array($trailingSlashCollection, 'url_matcher6.php', array()),
-           array($trailingSlashCollection, 'url_matcher7.php', array('base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher')),
-        );
+        $trailingSlashCollection->add('simple_trailing_slash_no_methods', new Route('/trailing/simple/no-methods/', [], [], [], '', [], []));
+        $trailingSlashCollection->add('simple_trailing_slash_GET_method', new Route('/trailing/simple/get-method/', [], [], [], '', [], ['GET']));
+        $trailingSlashCollection->add('simple_trailing_slash_HEAD_method', new Route('/trailing/simple/head-method/', [], [], [], '', [], ['HEAD']));
+        $trailingSlashCollection->add('simple_trailing_slash_POST_method', new Route('/trailing/simple/post-method/', [], [], [], '', [], ['POST']));
+        $trailingSlashCollection->add('regex_trailing_slash_no_methods', new Route('/trailing/regex/no-methods/{param}/', [], [], [], '', [], []));
+        $trailingSlashCollection->add('regex_trailing_slash_GET_method', new Route('/trailing/regex/get-method/{param}/', [], [], [], '', [], ['GET']));
+        $trailingSlashCollection->add('regex_trailing_slash_HEAD_method', new Route('/trailing/regex/head-method/{param}/', [], [], [], '', [], ['HEAD']));
+        $trailingSlashCollection->add('regex_trailing_slash_POST_method', new Route('/trailing/regex/post-method/{param}/', [], [], [], '', [], ['POST']));
+
+        $trailingSlashCollection->add('simple_not_trailing_slash_no_methods', new Route('/not-trailing/simple/no-methods', [], [], [], '', [], []));
+        $trailingSlashCollection->add('simple_not_trailing_slash_GET_method', new Route('/not-trailing/simple/get-method', [], [], [], '', [], ['GET']));
+        $trailingSlashCollection->add('simple_not_trailing_slash_HEAD_method', new Route('/not-trailing/simple/head-method', [], [], [], '', [], ['HEAD']));
+        $trailingSlashCollection->add('simple_not_trailing_slash_POST_method', new Route('/not-trailing/simple/post-method', [], [], [], '', [], ['POST']));
+        $trailingSlashCollection->add('regex_not_trailing_slash_no_methods', new Route('/not-trailing/regex/no-methods/{param}', [], [], [], '', [], []));
+        $trailingSlashCollection->add('regex_not_trailing_slash_GET_method', new Route('/not-trailing/regex/get-method/{param}', [], [], [], '', [], ['GET']));
+        $trailingSlashCollection->add('regex_not_trailing_slash_HEAD_method', new Route('/not-trailing/regex/head-method/{param}', [], [], [], '', [], ['HEAD']));
+        $trailingSlashCollection->add('regex_not_trailing_slash_POST_method', new Route('/not-trailing/regex/post-method/{param}', [], [], [], '', [], ['POST']));
+
+        return [
+           [new RouteCollection(), 'url_matcher0.php', []],
+           [$collection, 'url_matcher1.php', []],
+           [$redirectCollection, 'url_matcher2.php', ['base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher']],
+           [$rootprefixCollection, 'url_matcher3.php', []],
+           [$headMatchCasesCollection, 'url_matcher4.php', []],
+           [$groupOptimisedCollection, 'url_matcher5.php', ['base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher']],
+           [$trailingSlashCollection, 'url_matcher6.php', []],
+           [$trailingSlashCollection, 'url_matcher7.php', ['base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher']],
+        ];
     }
 
     private function generateDumpedMatcher(RouteCollection $collection, $redirectableStub = false)
     {
-        $options = array('class' => $this->matcherClass);
+        $options = ['class' => $this->matcherClass];
 
         if ($redirectableStub) {
             $options['base_class'] = '\Symfony\Component\Routing\Tests\Matcher\Dumper\RedirectableUrlMatcherStub';
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/StaticPrefixCollectionTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/StaticPrefixCollectionTest.php
index 37419e774364..e0ee4e8ee9d1 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/StaticPrefixCollectionTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/StaticPrefixCollectionTest.php
@@ -28,51 +28,51 @@ public function testGrouping(array $routes, $expected)
 
     public function routeProvider()
     {
-        return array(
-            'Simple - not nested' => array(
-                array(
-                    array('/', 'root'),
-                    array('/prefix/segment/', 'prefix_segment'),
-                    array('/leading/segment/', 'leading_segment'),
-                ),
+        return [
+            'Simple - not nested' => [
+                [
+                    ['/', 'root'],
+                    ['/prefix/segment/', 'prefix_segment'],
+                    ['/leading/segment/', 'leading_segment'],
+                ],
                 <<<EOF
 / root
 /prefix/segment prefix_segment
 /leading/segment leading_segment
 EOF
-            ),
-            'Not nested - group too small' => array(
-                array(
-                    array('/', 'root'),
-                    array('/prefix/segment/aa', 'prefix_segment'),
-                    array('/prefix/segment/bb', 'leading_segment'),
-                ),
+            ],
+            'Not nested - group too small' => [
+                [
+                    ['/', 'root'],
+                    ['/prefix/segment/aa', 'prefix_segment'],
+                    ['/prefix/segment/bb', 'leading_segment'],
+                ],
                 <<<EOF
 / root
 /prefix/segment/aa prefix_segment
 /prefix/segment/bb leading_segment
 EOF
-            ),
-            'Nested - contains item at intersection' => array(
-                array(
-                    array('/', 'root'),
-                    array('/prefix/segment/', 'prefix_segment'),
-                    array('/prefix/segment/bb', 'leading_segment'),
-                ),
+            ],
+            'Nested - contains item at intersection' => [
+                [
+                    ['/', 'root'],
+                    ['/prefix/segment/', 'prefix_segment'],
+                    ['/prefix/segment/bb', 'leading_segment'],
+                ],
                 <<<EOF
 / root
 /prefix/segment
 -> /prefix/segment prefix_segment
 -> /prefix/segment/bb leading_segment
 EOF
-            ),
-            'Simple one level nesting' => array(
-                array(
-                    array('/', 'root'),
-                    array('/group/segment/', 'nested_segment'),
-                    array('/group/thing/', 'some_segment'),
-                    array('/group/other/', 'other_segment'),
-                ),
+            ],
+            'Simple one level nesting' => [
+                [
+                    ['/', 'root'],
+                    ['/group/segment/', 'nested_segment'],
+                    ['/group/thing/', 'some_segment'],
+                    ['/group/other/', 'other_segment'],
+                ],
                 <<<EOF
 / root
 /group
@@ -80,17 +80,17 @@ public function routeProvider()
 -> /group/thing some_segment
 -> /group/other other_segment
 EOF
-  
10000
          ),
-            'Retain matching order with groups' => array(
-                array(
-                    array('/group/aa/', 'aa'),
-                    array('/group/bb/', 'bb'),
-                    array('/group/cc/', 'cc'),
-                    array('/', 'root'),
-                    array('/group/dd/', 'dd'),
-                    array('/group/ee/', 'ee'),
-                    array('/group/ff/', 'ff'),
-                ),
+            ],
+            'Retain matching order with groups' => [
+                [
+                    ['/group/aa/', 'aa'],
+                    ['/group/bb/', 'bb'],
+                    ['/group/cc/', 'cc'],
+                    ['/', 'root'],
+                    ['/group/dd/', 'dd'],
+                    ['/group/ee/', 'ee'],
+                    ['/group/ff/', 'ff'],
+                ],
                 <<<EOF
 /group
 -> /group/aa aa
@@ -102,20 +102,20 @@ public function routeProvider()
 -> /group/ee ee
 -> /group/ff ff
 EOF
-            ),
-            'Retain complex matching order with groups at base' => array(
-                array(
-                    array('/aaa/111/', 'first_aaa'),
-                    array('/prefixed/group/aa/', 'aa'),
-                    array('/prefixed/group/bb/', 'bb'),
-                    array('/prefixed/group/cc/', 'cc'),
-                    array('/prefixed/', 'root'),
-                    array('/prefixed/group/dd/', 'dd'),
-                    array('/prefixed/group/ee/', 'ee'),
-                    array('/prefixed/group/ff/', 'ff'),
-                    array('/aaa/222/', 'second_aaa'),
-                    array('/aaa/333/', 'third_aaa'),
-                ),
+            ],
+            'Retain complex matching order with groups at base' => [
+                [
+                    ['/aaa/111/', 'first_aaa'],
+                    ['/prefixed/group/aa/', 'aa'],
+                    ['/prefixed/group/bb/', 'bb'],
+                    ['/prefixed/group/cc/', 'cc'],
+                    ['/prefixed/', 'root'],
+                    ['/prefixed/group/dd/', 'dd'],
+                    ['/prefixed/group/ee/', 'ee'],
+                    ['/prefixed/group/ff/', 'ff'],
+                    ['/aaa/222/', 'second_aaa'],
+                    ['/aaa/333/', 'third_aaa'],
+                ],
                 <<<EOF
 /aaa
 -> /aaa/111 first_aaa
@@ -132,17 +132,17 @@ public function routeProvider()
 -> -> /prefixed/group/ee ee
 -> -> /prefixed/group/ff ff
 EOF
-            ),
+            ],
 
-            'Group regardless of segments' => array(
-                array(
-                    array('/aaa-111/', 'a1'),
-                    array('/aaa-222/', 'a2'),
-                    array('/aaa-333/', 'a3'),
-                    array('/group-aa/', 'g1'),
-                    array('/group-bb/', 'g2'),
-                    array('/group-cc/', 'g3'),
-                ),
+            'Group regardless of segments' => [
+                [
+                    ['/aaa-111/', 'a1'],
+                    ['/aaa-222/', 'a2'],
+                    ['/aaa-333/', 'a3'],
+                    ['/group-aa/', 'g1'],
+                    ['/group-bb/', 'g2'],
+                    ['/group-cc/', 'g3'],
+                ],
                 <<<EOF
 /aaa-
 -> /aaa-111 a1
@@ -153,13 +153,13 @@ public function routeProvider()
 -> /group-bb g2
 -> /group-cc g3
 EOF
-            ),
-        );
+            ],
+        ];
     }
 
     private function dumpCollection(StaticPrefixCollection $collection, $prefix = '')
     {
-        $lines = array();
+        $lines = [];
 
         foreach ($collection->getItems() as $item) {
             if ($item instanceof StaticPrefixCollection) {
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
index 9857f05024d7..e4336cdcac6c 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
@@ -23,7 +23,7 @@ public function testMissingTrailingSlash()
         $coll->add('foo', new Route('/foo/'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->will($this->returnValue(array()));
+        $matcher->expects($this->once())->method('redirect')->will($this->returnValue([]));
         $matcher->match('/foo');
     }
 
@@ -44,14 +44,14 @@ public function testRedirectWhenNoSlashForNonSafeMethod()
     public function testSchemeRedirectRedirectsToFirstScheme()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('FTP', 'HTTPS')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['FTP', 'HTTPS']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher
             ->expects($this->once())
             ->method('redirect')
             ->with('/foo', 'foo', 'ftp')
-            ->will($this->returnValue(array('_route' => 'foo')))
+            ->will($this->returnValue(['_route' => 'foo']))
         ;
         $matcher->match('/foo');
     }
@@ -59,7 +59,7 @@ public function testSchemeRedirectRedirectsToFirstScheme()
     public function testNoSchemaRedirectIfOneOfMultipleSchemesMatches()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https', 'http')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['https', 'http']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher
@@ -71,16 +71,16 @@ public function testNoSchemaRedirectIfOneOfMultipleSchemesMatches()
     public function testSchemeRedirectWithParams()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo/{bar}', array(), array(), array(), '', array('https')));
+        $coll->add('foo', new Route('/foo/{bar}', [], [], [], '', ['https']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher
             ->expects($this->once())
             ->method('redirect')
             ->with('/foo/baz', 'foo', 'https')
-            ->will($this->returnValue(array('redirect' => 'value')))
+            ->will($this->returnValue(['redirect' => 'value']))
         ;
-        $this->assertEquals(array('_route' => 'foo', 'bar' => 'baz', 'redirect' => 'value'), $matcher->match('/foo/baz'));
+        $this->assertEquals(['_route' => 'foo', 'bar' => 'baz', 'redirect' => 'value'], $matcher->match('/foo/baz'));
     }
 
     public function testSlashRedirectWithParams()
@@ -93,9 +93,9 @@ public function testSlashRedirectWithParams()
             ->expects($this->once())
             ->method('redirect')
             ->with('/foo/baz/', 'foo', null)
-            ->will($this->returnValue(array('redirect' => 'value')))
+            ->will($this->returnValue(['redirect' => 'value']))
         ;
-        $this->assertEquals(array('_route' => 'foo', 'bar' => 'baz', 'redirect' => 'value'), $matcher->match('/foo/baz'));
+        $this->assertEquals(['_route' => 'foo', 'bar' => 'baz', 'redirect' => 'value'], $matcher->match('/foo/baz'));
     }
 
     public function testRedirectPreservesUrlEncoding()
@@ -104,17 +104,17 @@ public function testRedirectPreservesUrlEncoding()
         $coll->add('foo', new Route('/foo:bar/'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/')->willReturn(array());
+        $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/')->willReturn([]);
         $matcher->match('/foo%3Abar');
     }
 
     public function testSchemeRequirement()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['https']));
         $matcher = $this->getUrlMatcher($coll, new RequestContext());
-        $matcher->expects($this->once())->method('redirect')->with('/foo', 'foo', 'https')->willReturn(array());
-        $this->assertSame(array('_route' => 'foo'), $matcher->match('/foo'));
+        $matcher->expects($this->once())->method('redirect')->with('/foo', 'foo', 'https')->willReturn([]);
+        $this->assertSame(['_route' => 'foo'], $matcher->match('/foo'));
     }
 
     public function testFallbackPage()
@@ -124,29 +124,29 @@ public function testFallbackPage()
         $coll->add('bar', new Route('/{name}'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->with('/foo/')->will($this->returnValue(array('_route' => 'foo')));
-        $this->assertSame(array('_route' => 'foo'), $matcher->match('/foo'));
+        $matcher->expects($this->once())->method('redirect')->with('/foo/')->will($this->returnValue(['_route' => 'foo']));
+        $this->assertSame(['_route' => 'foo'], $matcher->match('/foo'));
     }
 
     public function testSlashAndVerbPrecedenceWithRedirection()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/api/customers/{customerId}/contactpersons', array(), array(), array(), '', array(), array('post')));
-        $coll->add('b', new Route('/api/customers/{customerId}/contactpersons/', array(), array(), array(), '', array(), array('get')));
+        $coll->add('a', new Route('/api/customers/{customerId}/contactpersons', [], [], [], '', [], ['post']));
+        $coll->add('b', new Route('/api/customers/{customerId}/contactpersons/', [], [], [], '', [], ['get']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $expected = array(
+        $expected = [
             '_route' => 'b',
             'customerId' => '123',
-        );
+        ];
         $this->assertEquals($expected, $matcher->match('/api/customers/123/contactpersons/'));
 
-        $matcher->expects($this->once())->method('redirect')->with('/api/customers/123/contactpersons/')->willReturn(array());
+        $matcher->expects($this->once())->method('redirect')->with('/api/customers/123/contactpersons/')->willReturn([]);
         $this->assertEquals($expected, $matcher->match('/api/customers/123/contactpersons'));
     }
 
     protected function getUrlMatcher(RouteCollection $routes, RequestContext $context = null)
     {
-        return $this->getMockForAbstractClass('Symfony\Component\Routing\Matcher\RedirectableUrlMatcher', array($routes, $context ?: new RequestContext()));
+        return $this->getMockForAbstractClass('Symfony\Component\Routing\Matcher\RedirectableUrlMatcher', [$routes, $context ?: new RequestContext()]);
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/TraceableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/TraceableUrlMatcherTest.php
index 1f026a6ec731..04ddf845f0d7 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/TraceableUrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/TraceableUrlMatcherTest.php
@@ -23,41 +23,41 @@ class TraceableUrlMatcherTest extends TestCase
     public function test()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array(), array('POST')));
-        $coll->add('bar', new Route('/bar/{id}', array(), array('id' => '\d+')));
-        $coll->add('bar1', new Route('/bar/{name}', array(), array('id' => '\w+'), array(), '', array(), array('POST')));
-        $coll->add('bar2', new Route('/foo', array(), array(), array(), 'baz'));
-        $coll->add('bar3', new Route('/foo1', array(), array(), array(), 'baz'));
-        $coll->add('bar4', new Route('/foo2', array(), array(), array(), 'baz', array(), array(), 'context.getMethod() == "GET"'));
+        $coll->add('foo', new Route('/foo', [], [], [], '', [], ['POST']));
+        $coll->add('bar', new Route('/bar/{id}', [], ['id' => '\d+']));
+        $coll->add('bar1', new Route('/bar/{name}', [], ['id' => '\w+'], [], '', [], ['POST']));
+        $coll->add('bar2', new Route('/foo', [], [], [], 'baz'));
+        $coll->add('bar3', new Route('/foo1', [], [], [], 'baz'));
+        $coll->add('bar4', new Route('/foo2', [], [], [], 'baz', [], [], 'context.getMethod() == "GET"'));
 
         $context = new RequestContext();
         $context->setHost('baz');
 
         $matcher = new TraceableUrlMatcher($coll, $context);
         $traces = $matcher->getTraces('/babar');
-        $this->assertSame(array(0, 0, 0, 0, 0, 0), $this->getLevels($traces));
+        $this->assertSame([0, 0, 0, 0, 0, 0], $this->getLevels($traces));
 
         $traces = $matcher->getTraces('/foo');
-        $this->assertSame(array(1, 0, 0, 2), $this->getLevels($traces));
+        $this->assertSame([1, 0, 0, 2], $this->getLevels($traces));
 
         $traces = $matcher->getTraces('/bar/12');
-        $this->assertSame(array(0, 2), $this->getLevels($traces));
+        $this->assertSame([0, 2], $this->getLevels($traces));
 
         $traces = $matcher->getTraces('/bar/dd');
-        $this->assertSame(array(0, 1, 1, 0, 0, 0), $this->getLevels($traces));
+        $this->assertSame([0, 1, 1, 0, 0, 0], $this->getLevels($traces));
 
         $traces = $matcher->getTraces('/foo1');
-        $this->assertSame(array(0, 0, 0, 0, 2), $this->getLevels($traces));
+        $this->assertSame([0, 0, 0, 0, 2], $this->getLevels($traces));
 
         $context->setMethod('POST');
         $traces = $matcher->getTraces('/foo');
-        $this->assertSame(array(2), $this->getLevels($traces));
+        $this->assertSame([2], $this->getLevels($traces));
 
         $traces = $matcher->getTraces('/bar/dd');
-        $this->assertSame(array(0, 1, 2), $this->getLevels($traces));
+        $this->assertSame([0, 1, 2], $this->getLevels($traces));
 
         $traces = $matcher->getTraces('/foo2');
-        $this->assertSame(array(0, 0, 0, 0, 0, 1), $this->getLevels($traces));
+        $this->assertSame([0, 0, 0, 0, 0, 1], $this->getLevels($traces));
     }
 
     public function testMatchRouteOnMultipleHosts()
@@ -65,17 +65,17 @@ public function testMatchRouteOnMultipleHosts()
         $routes = new RouteCollection();
         $routes->add('first', new Route(
             '/mypath/',
-            array('_controller' => 'MainBundle:Info:first'),
-            array(),
-            array(),
+            ['_controller' => 'MainBundle:Info:first'],
+            [],
+            [],
             'some.example.com'
         ));
 
         $routes->add('second', new Route(
             '/mypath/',
-            array('_controller' => 'MainBundle:Info:second'),
-            array(),
-            array(),
+            ['_controller' => 'MainBundle:Info:second'],
+            [],
+            [],
             'another.example.com'
         ));
 
@@ -86,14 +86,14 @@ public function testMatchRouteOnMultipleHosts()
 
         $traces = $matcher->getTraces('/mypath/');
         $this->assertSame(
-            array(TraceableUrlMatcher::ROUTE_ALMOST_MATCHES, TraceableUrlMatcher::ROUTE_ALMOST_MATCHES),
+            [TraceableUrlMatcher::ROUTE_ALMOST_MATCHES, TraceableUrlMatcher::ROUTE_ALMOST_MATCHES],
             $this->getLevels($traces)
         );
     }
 
     public function getLevels($traces)
     {
-        $levels = array();
+        $levels = [];
         foreach ($traces as $trace) {
             $levels[] = $trace['level'];
         }
@@ -104,7 +104,7 @@ public function getLevels($traces)
     public function testRoutesWithConditions()
     {
         $routes = new RouteCollection();
-        $routes->add('foo', new Route('/foo', array(), array(), array(), 'baz', array(), array(), "request.headers.get('User-Agent') matches '/firefox/i'"));
+        $routes->add('foo', new Route('/foo', [], [], [], 'baz', [], [], "request.headers.get('User-Agent') matches '/firefox/i'"));
 
         $context = new RequestContext();
         $context->setHost('baz');
@@ -115,7 +115,7 @@ public function testRoutesWithConditions()
         $traces = $matcher->getTracesForRequest($notMatchingRequest);
         $this->assertEquals("Condition \"request.headers.get('User-Agent') matches '/firefox/i'\" does not evaluate to \"true\"", $traces[0]['log']);
 
-        $matchingRequest = Request::create('/foo', 'GET', array(), array(), array(), array('HTTP_USER_AGENT' => 'Firefox'));
+        $matchingRequest = Request::create('/foo', 'GET', [], [], [], ['HTTP_USER_AGENT' => 'Firefox']);
         $traces = $matcher->getTracesForRequest($matchingRequest);
         $this->assertEquals('Route matches!', $traces[0]['log']);
     }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
index 85647f0bead2..6a4ba995397b 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
@@ -33,7 +33,7 @@ public function testNoMethodSoAllowed()
     public function testMethodNotAllowed()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array(), array('post')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', [], ['post']));
 
         $matcher = $this->getUrlMatcher($coll);
 
@@ -41,14 +41,14 @@ public function testMethodNotAllowed()
             $matcher->match('/foo');
             $this->fail();
         } catch (MethodNotAllowedException $e) {
-            $this->assertEquals(array('POST'), $e->getAllowedMethods());
+            $this->assertEquals(['POST'], $e->getAllowedMethods());
         }
     }
 
     public function testMethodNotAllowedOnRoot()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/', array(), array(), array(), '', array(), array('GET')));
+        $coll->add('foo', new Route('/', [], [], [], '', [], ['GET']));
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'POST'));
 
@@ -56,14 +56,14 @@ public function testMethodNotAllowedOnRoot()
             $matcher->match('/');
             $this->fail();
         } catch (MethodNotAllowedException $e) {
-            $this->assertEquals(array('GET'), $e->getAllowedMethods());
+            $this->assertEquals(['GET'], $e->getAllowedMethods());
         }
     }
 
     public function testHeadAllowedWhenRequirementContainsGet()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array(), array('get')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', [], ['get']));
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'head'));
         $this->assertInternalType('array', $matcher->match('/foo'));
@@ -72,8 +72,8 @@ public function testHeadAllowedWhenRequirementContainsGet()
     public function testMethodNotAllowedAggregatesAllowedMethods()
     {
         $coll = new RouteCollection();
-        $coll->add('foo1', new Route('/foo', array(), array(), array(), '', array(), array('post')));
-        $coll->add('foo2', new Route('/foo', array(), array(), array(), '', array(), array('put', 'delete')));
+        $coll->add('foo1', new Route('/foo', [], [], [], '', [], ['post']));
+        $coll->add('foo2', new Route('/foo', [], [], [], '', [], ['put', 'delete']));
 
         $matcher = $this->getUrlMatcher($coll);
 
@@ -81,7 +81,7 @@ public function testMethodNotAllowedAggregatesAllowedMethods()
             $matcher->match('/foo');
             $this->fail();
         } catch (MethodNotAllowedException $e) {
-            $this->assertEquals(array('POST', 'PUT', 'DELETE'), $e->getAllowedMethods());
+            $this->assertEquals(['POST', 'PUT', 'DELETE'], $e->getAllowedMethods());
         }
     }
 
@@ -96,17 +96,17 @@ public function testMatch()
             $this->fail();
         } catch (ResourceNotFoundException $e) {
         }
-        $this->assertEquals(array('_route' => 'foo', 'bar' => 'baz'), $matcher->match('/foo/baz'));
+        $this->assertEquals(['_route' => 'foo', 'bar' => 'baz'], $matcher->match('/foo/baz'));
 
         // test that defaults are merged
         $collection = new RouteCollection();
-        $collection->add('foo', new Route('/foo/{bar}', array('def' => 'test')));
+        $collection->add('foo', new Route('/foo/{bar}', ['def' => 'test']));
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_route' => 'foo', 'bar' => 'baz', 'def' => 'test'), $matcher->match('/foo/baz'));
+        $this->assertEquals(['_route' => 'foo', 'bar' => 'baz', 'def' => 'test'], $matcher->match('/foo/baz'));
 
         // test that route "method" is ignored if no method is given in the context
         $collection = new RouteCollection();
-        $collection->add('foo', new Route('/foo', array(), array(), array(), '', array(), array('get', 'head')));
+        $collection->add('foo', new Route('/foo', [], [], [], '', [], ['get', 'head']));
         $matcher = $this->getUrlMatcher($collection);
         $this->assertInternalType('array', $matcher->match('/foo'));
 
@@ -126,24 +126,24 @@ public function testMatch()
 
         // route with an optional variable as the first segment
         $collection = new RouteCollection();
-        $collection->add('bar', new Route('/{bar}/foo', array('bar' => 'bar'), array('bar' => 'foo|bar')));
+        $collection->add('bar', new Route('/{bar}/foo', ['bar' => 'bar'], ['bar' => 'foo|bar']));
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_route' => 'bar', 'bar' => 'bar'), $matcher->match('/bar/foo'));
-        $this->assertEquals(array('_route' => 'bar', 'bar' => 'foo'), $matcher->match('/foo/foo'));
+        $this->assertEquals(['_route' => 'bar', 'bar' => 'bar'], $matcher->match('/bar/foo'));
+        $this->assertEquals(['_route' => 'bar', 'bar' => 'foo'], $matcher->match('/foo/foo'));
 
         $collection = new RouteCollection();
-        $collection->add('bar', new Route('/{bar}', array('bar' => 'bar'), array('bar' => 'foo|bar')));
+        $collection->add('bar', new Route('/{bar}', ['bar' => 'bar'], ['bar' => 'foo|bar']));
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_route' => 'bar', 'bar' => 'foo'), $matcher->match('/foo'));
-        $this->assertEquals(array('_route' => 'bar', 'bar' => 'bar'), $matcher->match('/'));
+        $this->assertEquals(['_route' => 'bar', 'bar' => 'foo'], $matcher->match('/foo'));
+        $this->assertEquals(['_route' => 'bar', 'bar' => 'bar'], $matcher->match('/'));
 
         // route with only optional variables
         $collection = new RouteCollection();
-        $collection->add('bar', new Route('/{foo}/{bar}', array('foo' => 'foo', 'bar' => 'bar'), array()));
+        $collection->add('bar', new Route('/{foo}/{bar}', ['foo' => 'foo', 'bar' => 'bar'], []));
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_route' => 'bar', 'foo' => 'foo', 'bar' => 'bar'), $matcher->match('/'));
-        $this->assertEquals(array('_route' => 'bar', 'foo' => 'a', 'bar' => 'bar'), $matcher->match('/a'));
-        $this->assertEquals(array('_route' => 'bar', 'foo' => 'a', 'bar' => 'b'), $matcher->match('/a/b'));
+        $this->assertEquals(['_route' => 'bar', 'foo' => 'foo', 'bar' => 'bar'], $matcher->match('/'));
+        $this->assertEquals(['_route' => 'bar', 'foo' => 'a', 'bar' => 'bar'], $matcher->match('/a'));
+        $this->assertEquals(['_route' => 'bar', 'foo' => 'a', 'bar' => 'b'], $matcher->match('/a/b'));
     }
 
     public function testMatchWithPrefixes()
@@ -154,7 +154,7 @@ public function testMatchWithPrefixes()
         $collection->addPrefix('/a');
 
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_route' => 'foo', 'foo' => 'foo'), $matcher->match('/a/b/foo'));
+        $this->assertEquals(['_route' => 'foo', 'foo' => 'foo'], $matcher->match('/a/b/foo'));
     }
 
     public function testMatchWithDynamicPrefix()
@@ -165,7 +165,7 @@ public function testMatchWithDynamicPrefix()
         $collection->addPrefix('/{_locale}');
 
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_locale' => 'fr', '_route' => 'foo', 'foo' => 'foo'), $matcher->match('/fr/b/foo'));
+        $this->assertEquals(['_locale' => 'fr', '_route' => 'foo', 'foo' => 'foo'], $matcher->match('/fr/b/foo'));
     }
 
     public function testMatchSpecialRouteName()
@@ -174,7 +174,7 @@ public function testMatchSpecialRouteName()
         $collection->add('$péß^a|', new Route('/bar'));
 
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_route' => '$péß^a|'), $matcher->match('/bar'));
+        $this->assertEquals(['_route' => '$péß^a|'], $matcher->match('/bar'));
     }
 
     /**
@@ -193,20 +193,20 @@ public function testMatchNonAlpha()
     {
         $collection = new RouteCollection();
         $chars = '!"$%éà &\'()*+,./:;<=>@ABCDEFGHIJKLMNOPQRSTUVWXYZ\\[]^_`abcdefghijklmnopqrstuvwxyz{|}~-';
-        $collection->add('foo', new Route('/{foo}/bar', array(), array('foo' => '['.preg_quote($chars).']+'), array('utf8' => true)));
+        $collection->add('foo', new Route('/{foo}/bar', [], ['foo' => '['.preg_quote($chars).']+'], ['utf8' => true]));
 
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_route' => 'foo', 'foo' => $chars), $matcher->match('/'.rawurlencode($chars).'/bar'));
-        $this->assertEquals(array('_route' => 'foo', 'foo' => $chars), $matcher->match('/'.strtr($chars, array('%' => '%25')).'/bar'));
+        $this->assertEquals(['_route' => 'foo', 'foo' => $chars], $matcher->match('/'.rawurlencode($chars).'/bar'));
+        $this->assertEquals(['_route' => 'foo', 'foo' => $chars], $matcher->match('/'.strtr($chars, ['%' => '%25']).'/bar'));
     }
 
     public function testMatchWithDotMetacharacterInRequirements()
     {
         $collection = new RouteCollection();
-        $collection->add('foo', new Route('/{foo}/bar', array(), array('foo' => '.+')));
+        $collection->add('foo', new Route('/{foo}/bar', [], ['foo' => '.+']));
 
         $matcher = $this->getUrlMatcher($collection);
-        $this->assertEquals(array('_route' => 'foo', 'foo' => "\n"), $matcher->match('/'.urlencode("\n").'/bar'), 'linefeed character is matched');
+        $this->assertEquals(['_route' => 'foo', 'foo' => "\n"], $matcher->match('/'.urlencode("\n").'/bar'), 'linefeed character is matched');
     }
 
     public function testMatchOverriddenRoute()
@@ -221,9 +221,9 @@ public function testMatchOverriddenRoute()
 
         $matcher = $this->getUrlMatcher($collection);
 
-        $this->assertEquals(array('_route' => 'foo'), $matcher->match('/foo1'));
+        $this->assertEquals(['_route' => 'foo'], $matcher->match('/foo1'));
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('Symfony\Component\Routing\Exception\ResourceNotFoundException');
-        $this->assertEquals(array(), $matcher->match('/foo'));
+        $this->assertEquals([], $matcher->match('/foo'));
     }
 
     public function testMatchRegression()
@@ -233,7 +233,7 @@ public function testMatchRegression()
         $coll->add('bar', new Route('/foo/bar/{foo}'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('foo' => 'bar', '_route' => 'bar'), $matcher->match('/foo/bar/bar'));
+        $this->assertEquals(['foo' => 'bar', '_route' => 'bar'], $matcher->match('/foo/bar/bar'));
 
         $collection = new RouteCollection();
         $collection->add('foo', new Route('/{bar}'));
@@ -248,36 +248,36 @@ public function testMatchRegression()
     public function testDefaultRequirementForOptionalVariables()
     {
         $coll = new RouteCollection();
-        $coll->add('test', new Route('/{page}.{_format}', array('page' => 'index', '_format' => 'html')));
+        $coll->add('test', new Route('/{page}.{_format}', ['page' => 'index', '_format' => 'html']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('page' => 'my-page', '_format' => 'xml', '_route' => 'test'), $matcher->match('/my-page.xml'));
+        $this->assertEquals(['page' => 'my-page', '_format' => 'xml', '_route' => 'test'], $matcher->match('/my-page.xml'));
     }
 
     public function testMatchingIsEager()
     {
         $coll = new RouteCollection();
-        $coll->add('test', new Route('/{foo}-{bar}-', array(), array('foo' => '.+', 'bar' => '.+')));
+        $coll->add('test', new Route('/{foo}-{bar}-', [], ['foo' => '.+', 'bar' => '.+']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('foo' => 'text1-text2-text3', 'bar' => 'text4', '_route' => 'test'), $matcher->match('/text1-text2-text3-text4-'));
+        $this->assertEquals(['foo' => 'text1-text2-text3', 'bar' => 'text4', '_route' => 'test'], $matcher->match('/text1-text2-text3-text4-'));
     }
 
     public function testAdjacentVariables()
     {
         $coll = new RouteCollection();
-        $coll->add('test', new Route('/{w}{x}{y}{z}.{_format}', array('z' => 'default-z', '_format' => 'html'), array('y' => 'y|Y')));
+        $coll->add('test', new Route('/{w}{x}{y}{z}.{_format}', ['z' => 'default-z', '_format' => 'html'], ['y' => 'y|Y']));
 
         $matcher = $this->getUrlMatcher($coll);
         // 'w' eagerly matches as much as possible and the other variables match the remaining chars.
         // This also shows that the variables w-z must all exclude the separating char (the dot '.' in this case) by default requirement.
         // Otherwise they would also consume '.xml' and _format would never match as it's an optional variable.
-        $this->assertEquals(array('w' => 'wwwww', 'x' => 'x', 'y' => 'Y', 'z' => 'Z', '_format' => 'xml', '_route' => 'test'), $matcher->match('/wwwwwxYZ.xml'));
+        $this->assertEquals(['w' => 'wwwww', 'x' => 'x', 'y' => 'Y', 'z' => 'Z', '_format' => 'xml', '_route' => 'test'], $matcher->match('/wwwwwxYZ.xml'));
         // As 'y' has custom requirement and can only be of value 'y|Y', it will leave  'ZZZ' to variable z.
         // So with carefully chosen requirements adjacent variables, can be useful.
-        $this->assertEquals(array('w' => 'wwwww', 'x' => 'x', 'y' => 'y', 'z' => 'ZZZ', '_format' => 'html', '_route' => 'test'), $matcher->match('/wwwwwxyZZZ'));
+        $this->assertEquals(['w' => 'wwwww', 'x' => 'x', 'y' => 'y', 'z' => 'ZZZ', '_format' => 'html', '_route' => 'test'], $matcher->match('/wwwwwxyZZZ'));
         // z and _format are optional.
-        $this->assertEquals(array('w' => 'wwwww', 'x' => 'x', 'y' => 'y', 'z' => 'default-z', '_format' => 'html', '_route' => 'test'), $matcher->match('/wwwwwxy'));
+        $this->assertEquals(['w' => 'wwwww', 'x' => 'x', 'y' => 'y', 'z' => 'default-z', '_format' => 'html', '_route' => 'test'], $matcher->match('/wwwwwxy'));
 
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('Symfony\Component\Routing\Exception\ResourceNotFoundException');
         $matcher->match('/wxy.html');
@@ -286,11 +286,11 @@ public function testAdjacentVariables()
     public function testOptionalVariableWithNoRealSeparator()
     {
         $coll = new RouteCollection();
-        $coll->add('test', new Route('/get{what}', array('what' => 'All')));
+        $coll->add('test', new Route('/get{what}', ['what' => 'All']));
         $matcher = $this->getUrlMatcher($coll);
 
-        $this->assertEquals(array('what' => 'All', '_route' => 'test'), $matcher->match('/get'));
-        $this->assertEquals(array('what' => 'Sites', '_route' => 'test'), $matcher->match('/getSites'));
+        $this->assertEquals(['what' => 'All', '_route' => 'test'], $matcher->match('/get'));
+        $this->assertEquals(['what' => 'Sites', '_route' => 'test'], $matcher->match('/getSites'));
 
         // Usually the character in front of an optional parameter can be left out, e.g. with pattern '/get/{what}' just '/get' would match.
         // But here the 't' in 'get' is not a separating character, so it makes no sense to match without it.
@@ -304,7 +304,7 @@ public function testRequiredVariableWithNoRealSeparator()
         $coll->add('test', new Route('/get{what}Suffix'));
         $matcher = $this->getUrlMatcher($coll);
 
-        $this->assertEquals(array('what' => 'Sites', '_route' => 'test'), $matcher->match('/getSitesSuffix'));
+        $this->assertEquals(['what' => 'Sites', '_route' => 'test'], $matcher->match('/getSitesSuffix'));
     }
 
     public function testDefaultRequirementOfVariable()
@@ -313,7 +313,7 @@ public function testDefaultRequirementOfVariable()
         $coll->add('test', new Route('/{page}.{_format}'));
         $matcher = $this->getUrlMatcher($coll);
 
-        $this->assertEquals(array('page' => 'index', '_format' => 'mobile.html', '_route' => 'test'), $matcher->match('/index.mobile.html'));
+        $this->assertEquals(['page' => 'index', '_format' => 'mobile.html', '_route' => 'test'], $matcher->match('/index.mobile.html'));
     }
 
     /**
@@ -334,7 +334,7 @@ public function testDefaultRequirementOfVariableDisallowsSlash()
     public function testDefaultRequirementOfVariableDisallowsNextSeparator()
     {
         $coll = new RouteCollection();
-        $coll->add('test', new Route('/{page}.{_format}', array(), array('_format' => 'html|xml')));
+        $coll->add('test', new Route('/{page}.{_format}', [], ['_format' => 'html|xml']));
         $matcher = $this->getUrlMatcher($coll);
 
         $matcher->match('/do.t.html');
@@ -346,7 +346,7 @@ public function testDefaultRequirementOfVariableDisallowsNextSeparator()
     public function testSchemeRequirement()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['https']));
         $matcher = $this->getUrlMatcher($coll);
         $matcher->match('/foo');
     }
@@ -371,7 +371,7 @@ public function testRequestCondition()
         $route->setCondition('request.getBaseUrl() == "/sub/front.php" and request.getPathInfo() == "/foo/bar"');
         $coll->add('foo', $route);
         $matcher = $this->getUrlMatcher($coll, new RequestContext('/sub/front.php'));
-        $this->assertEquals(array('bar' => 'bar', '_route' => 'foo'), $matcher->match('/foo/bar'));
+        $this->assertEquals(['bar' => 'bar', '_route' => 'foo'], $matcher->match('/foo/bar'));
     }
 
     public function testDecodeOnce()
@@ -380,7 +380,7 @@ public function testDecodeOnce()
         $coll->add('foo', new Route('/foo/{foo}'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('foo' => 'bar%23', '_route' => 'foo'), $matcher->match('/foo/bar%2523'));
+        $this->assertEquals(['foo' => 'bar%23', '_route' => 'foo'], $matcher->match('/foo/bar%2523'));
     }
 
     public function testCannotRelyOnPrefix()
@@ -396,30 +396,30 @@ public function testCannotRelyOnPrefix()
         $coll->addCollection($subColl);
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('_route' => 'bar'), $matcher->match('/new'));
+        $this->assertEquals(['_route' => 'bar'], $matcher->match('/new'));
     }
 
     public function testWithHost()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo/{foo}', array(), array(), array(), '{locale}.example.com'));
+        $coll->add('foo', new Route('/foo/{foo}', [], [], [], '{locale}.example.com'));
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'GET', 'en.example.com'));
-        $this->assertEquals(array('foo' => 'bar', '_route' => 'foo', 'locale' => 'en'), $matcher->match('/foo/bar'));
+        $this->assertEquals(['foo' => 'bar', '_route' => 'foo', 'locale' => 'en'], $matcher->match('/foo/bar'));
     }
 
     public function testWithHostOnRouteCollection()
     {
         $coll = new RouteCollection();
         $coll->add('foo', new Route('/foo/{foo}'));
-        $coll->add('bar', new Route('/bar/{foo}', array(), array(), array(), '{locale}.example.net'));
+        $coll->add('bar', new Route('/bar/{foo}', [], [], [], '{locale}.example.net'));
         $coll->setHost('{locale}.example.com');
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'GET', 'en.example.com'));
-        $this->assertEquals(array('foo' => 'bar', '_route' => 'foo', 'locale' => 'en'), $matcher->match('/foo/bar'));
+        $this->assertEquals(['foo' => 'bar', '_route' => 'foo', 'locale' => 'en'], $matcher->match('/foo/bar'));
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'GET', 'en.example.com'));
-        $this->assertEquals(array('foo' => 'bar', '_route' => 'bar', 'locale' => 'en'), $matcher->match('/bar/bar'));
+        $this->assertEquals(['foo' => 'bar', '_route' => 'bar', 'locale' => 'en'], $matcher->match('/bar/bar'));
     }
 
     /**
@@ -428,7 +428,7 @@ public function testWithHostOnRouteCollection()
     public function testWithOutHostHostDoesNotMatch()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo/{foo}', array(), array(), array(), '{locale}.example.com'));
+        $coll->add('foo', new Route('/foo/{foo}', [], [], [], '{locale}.example.com'));
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'GET', 'example.com'));
         $matcher->match('/foo/bar');
@@ -440,7 +440,7 @@ public function testWithOutHostHostDoesNotMatch()
     public function testPathIsCaseSensitive()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/locale', array(), array('locale' => 'EN|FR|DE')));
+        $coll->add('foo', new Route('/locale', [], ['locale' => 'EN|FR|DE']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher->match('/en');
@@ -449,10 +449,10 @@ public function testPathIsCaseSensitive()
     public function testHostIsCaseInsensitive()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/', array(), array('locale' => 'EN|FR|DE'), array(), '{locale}.example.com'));
+        $coll->add('foo', new Route('/', [], ['locale' => 'EN|FR|DE'], [], '{locale}.example.com'));
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'GET', 'en.example.com'));
-        $this->assertEquals(array('_route' => 'foo', 'locale' => 'en'), $matcher->match('/'));
+        $this->assertEquals(['_route' => 'foo', 'locale' => 'en'], $matcher->match('/'));
     }
 
     /**
@@ -485,9 +485,9 @@ public function testNestedCollections()
         $coll->addCollection($subColl);
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('_route' => 'a'), $matcher->match('/p/a'));
-        $this->assertEquals(array('_route' => 'baz', 'baz' => 'p'), $matcher->match('/p'));
-        $this->assertEquals(array('_route' => 'buz'), $matcher->match('/prefix/buz'));
+        $this->assertEquals(['_route' => 'a'], $matcher->match('/p/a'));
+        $this->assertEquals(['_route' => 'baz', 'baz' => 'p'], $matcher->match('/p'));
+        $this->assertEquals(['_route' => 'buz'], $matcher->match('/prefix/buz'));
     }
 
     /**
@@ -496,7 +496,7 @@ public function testNestedCollections()
     public function testSchemeAndMethodMismatch()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/', array(), array(), array(), null, array('https'), array('POST')));
+        $coll->add('foo', new Route('/', [], [], [], null, ['https'], ['POST']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher->match('/');
@@ -505,25 +505,25 @@ public function testSchemeAndMethodMismatch()
     public function testSlashAndVerbPrecedence()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/api/customers/{customerId}/contactpersons/', array(), array(), array(), '', array(), array('post')));
-        $coll->add('b', new Route('/api/customers/{customerId}/contactpersons', array(), array(), array(), '', array(), array('get')));
+        $coll->add('a', new Route('/api/customers/{customerId}/contactpersons/', [], [], [], '', [], ['post']));
+        $coll->add('b', new Route('/api/customers/{customerId}/contactpersons', [], [], [], '', [], ['get']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $expected = array(
+        $expected = [
             '_route' => 'b',
             'customerId' => '123',
-        );
+        ];
         $this->assertEquals($expected, $matcher->match('/api/customers/123/contactpersons'));
 
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/api/customers/{customerId}/contactpersons/', array(), array(), array(), '', array(), array('get')));
-        $coll->add('b', new Route('/api/customers/{customerId}/contactpersons', array(), array(), array(), '', array(), array('post')));
+        $coll->add('a', new Route('/api/customers/{customerId}/contactpersons/', [], [], [], '', [], ['get']));
+        $coll->add('b', new Route('/api/customers/{customerId}/contactpersons', [], [], [], '', [], ['post']));
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'POST'));
-        $expected = array(
+        $expected = [
             '_route' => 'b',
             'customerId' => '123',
-        );
+        ];
         $this->assertEquals($expected, $matcher->match('/api/customers/123/contactpersons'));
     }
 
diff --git a/src/Symfony/Component/Routing/Tests/RequestContextTest.php b/src/Symfony/Component/Routing/Tests/RequestContextTest.php
index ffe29d1a747c..3d23b0e8947a 100644
--- a/src/Symfony/Component/Routing/Tests/RequestContextTest.php
+++ b/src/Symfony/Component/Routing/Tests/RequestContextTest.php
@@ -68,16 +68,16 @@ public function testFromRequest()
     public function testGetParameters()
     {
         $requestContext = new RequestContext();
-        $this->assertEquals(array(), $requestContext->getParameters());
+        $this->assertEquals([], $requestContext->getParameters());
 
-        $requestContext->setParameters(array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $requestContext->getParameters());
+        $requestContext->setParameters(['foo' => 'bar']);
+        $this->assertEquals(['foo' => 'bar'], $requestContext->getParameters());
     }
 
     public function testHasParameter()
     {
         $requestContext = new RequestContext();
-        $requestContext->setParameters(array('foo' => 'bar'));
+        $requestContext->setParameters(['foo' => 'bar']);
 
         $this->assertTrue($requestContext->hasParameter('foo'));
         $this->assertFalse($requestContext->hasParameter('baz'));
@@ -86,7 +86,7 @@ public function testHasParameter()
     public function testGetParameter()
     {
         $requestContext = new RequestContext();
-        $requestContext->setParameters(array('foo' => 'bar'));
+        $requestContext->setParameters(['foo' => 'bar']);
 
         $this->assertEquals('bar', $requestContext->getParameter('foo'));
         $this->assertNull($requestContext->getParameter('baz'));
@@ -154,7 +154,7 @@ public function testFluentInterface()
         $this->assertSame($requestContext, $requestContext->setQueryString('foo=bar'));
         $this->assertSame($requestContext, $requestContext->setHttpPort(80));
         $this->assertSame($requestContext, $requestContext->setHttpsPort(443));
-        $this->assertSame($requestContext, $requestContext->setParameters(array()));
+        $this->assertSame($requestContext, $requestContext->setParameters([]));
         $this->assertSame($requestContext, $requestContext->setParameter('foo', 'bar'));
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/RouteCollectionBuilderTest.php b/src/Symfony/Component/Routing/Tests/RouteCollectionBuilderTest.php
index 76a042d670b2..20afdff484f8 100644
--- a/src/Symfony/Component/Routing/Tests/RouteCollectionBuilderTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteCollectionBuilderTest.php
@@ -68,7 +68,7 @@ public function testImport()
 
     public function testImportAddResources()
     {
-        $routeCollectionBuilder = new RouteCollectionBuilder(new YamlFileLoader(new FileLocator(array(__DIR__.'/Fixtures/'))));
+        $routeCollectionBuilder = new RouteCollectionBuilder(new YamlFileLoader(new FileLocator([__DIR__.'/Fixtures/'])));
         $routeCollectionBuilder->import('file_resource.yml');
         $routeCollection = $routeCollectionBuilder->build();
 
@@ -131,13 +131,13 @@ public function testFlushOrdering()
 
         $this->assertCount(5, $actualCollection);
         $actualRouteNames = array_keys($actualCollection->all());
-        $this->assertEquals(array(
+        $this->assertEquals([
             'checkout_route',
             'imported_route1',
             'imported_route2',
             'homepage',
             'admin_dashboard',
-        ), $actualRouteNames);
+        ], $actualRouteNames);
 
         // make sure the defaults were set
         $checkoutRoute = $actualCollection->get('checkout_route');
@@ -154,18 +154,18 @@ public function testFlushSetsRouteNames()
         $collectionBuilder->add('/admin', 'AppBundle:Admin:dashboard', 'admin_dashboard');
         // add an unnamed route
         $collectionBuilder->add('/blogs', 'AppBundle:Blog:list')
-            ->setMethods(array('GET'));
+            ->setMethods(['GET']);
 
         // integer route names are allowed - they don't confuse things
         $collectionBuilder->add('/products', 'AppBundle:Product:list', 100);
 
         $actualCollection = $collectionBuilder->build();
         $actualRouteNames = array_keys($actualCollection->all());
-        $this->assertEquals(array(
+        $this->assertEquals([
             'admin_dashboard',
             'GET_blogs',
             '100',
-        ), $actualRouteNames);
+        ], $actualRouteNames);
     }
 
     public function testFlushSetsDetailsOnChildrenRoutes()
@@ -183,8 +183,8 @@ public function testFlushSetsDetailsOnChildrenRoutes()
             ->setOption('fooBar', true)
             ->setHost('example.com')
             ->setCondition('request.isSecure()')
-            ->setSchemes(array('https'))
-            ->setMethods(array('POST'));
+            ->setSchemes(['https'])
+            ->setMethods(['POST']);
 
         // a simple route, nothing added to it
         $routes->add('/blogs/{id}', 'editAction', 'blog_edit');
@@ -201,8 +201,8 @@ public function testFlushSetsDetailsOnChildrenRoutes()
             ->setDefault('_locale', 'fr')
             ->setRequirement('_locale', 'fr|en')
             ->setOption('niceRoute', true)
-            ->setSchemes(array('http'))
-            ->setMethods(array('GET', 'POST'));
+            ->setSchemes(['http'])
+            ->setMethods(['GET', 'POST']);
 
         $collection = $routes->build();
         $actualListRoute = $collection->get('blog_list');
@@ -216,8 +216,8 @@ public function testFlushSetsDetailsOnChildrenRoutes()
         $this->assertTrue($actualListRoute->getOption('fooBar'));
         $this->assertEquals('example.com', $actualListRoute->getHost());
         $this->assertEquals('request.isSecure()', $actualListRoute->getCondition());
-        $this->assertEquals(array('https'), $actualListRoute->getSchemes());
-        $this->assertEquals(array('POST'), $actualListRoute->getMethods());
+        $this->assertEquals(['https'], $actualListRoute->getSchemes());
+        $this->assertEquals(['POST'], $actualListRoute->getMethods());
         // inherited from the main collection
         $this->assertEquals('fr', $actualListRoute->getDefault('_locale'));
         $this->assertEquals('fr|en', $actualListRoute->getRequirement('_locale'));
@@ -227,8 +227,8 @@ public function testFlushSetsDetailsOnChildrenRoutes()
         // inherited from the collection
         $this->assertEquals('symfony.com', $actualEditRoute->getHost());
         $this->assertEquals('request.query.get("page")==1', $actualEditRoute->getCondition());
-        $this->assertEquals(array('http'), $actualEditRoute->getSchemes());
-        $this->assertEquals(array('GET', 'POST'), $actualEditRoute->getMethods());
+        $this->assertEquals(['http'], $actualEditRoute->getSchemes());
+        $this->assertEquals(['GET', 'POST'], $actualEditRoute->getMethods());
     }
 
     /**
@@ -250,16 +250,16 @@ public function testFlushPrefixesPaths($collectionPrefix, $routePath, $expectedP
 
     public function providePrefixTests()
     {
-        $tests = array();
+        $tests = [];
         // empty prefix is of course ok
-        $tests[] = array('', '/foo', '/foo');
+        $tests[] = ['', '/foo', '/foo'];
         // normal prefix - does not matter if it's a wildcard
-        $tests[] = array('/{admin}', '/foo', '/{admin}/foo');
+        $tests[] = ['/{admin}', '/foo', '/{admin}/foo'];
         // shows that a prefix will always be given the starting slash
-        $tests[] = array('0', '/foo', '/0/foo');
+        $tests[] = ['0', '/foo', '/0/foo'];
 
         // spaces are ok, and double slahses at the end are cleaned
-        $tests[] = array('/ /', '/foo', '/ /foo');
+        $tests[] = ['/ /', '/foo', '/ /foo'];
 
         return $tests;
     }
@@ -323,10 +323,10 @@ public function testAutomaticRouteNamesDoNotConflict()
         $accountRoutes = $routes->createBuilder();
         // route 2
         $accountRoutes->add('/dashboard', '')
-            ->setMethods(array('GET'));
+            ->setMethods(['GET']);
         // route 3
         $accountRoutes->add('/dashboard', '')
-            ->setMethods(array('POST'));
+            ->setMethods(['POST']);
 
         $routes->mount('/admin', $adminRoutes);
         $routes->mount('/account', $accountRoutes);
@@ -351,7 +351,7 @@ public function testAddsThePrefixOnlyOnceWhenLoadingMultipleCollections()
         $loader
             ->expects($this->any())
             ->method('load')
-            ->will($this->returnValue(array($firstCollection, $secondCollection)));
+            ->will($this->returnValue([$firstCollection, $secondCollection]));
 
         $routeCollectionBuilder = new RouteCollectionBuilder($loader);
         $routeCollectionBuilder->import('/directory/recurse/*', '/other/', 'glob');
diff --git a/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php b/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
index 78eb5ba5395f..2d29d32968d5 100644
--- a/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
@@ -23,7 +23,7 @@ public function testRoute()
         $collection = new RouteCollection();
         $route = new Route('/foo');
         $collection->add('foo', $route);
-        $this->assertEquals(array('foo' => $route), $collection->all(), '->add() adds a route');
+        $this->assertEquals(['foo' => $route], $collection->all(), '->add() adds a route');
         $this->assertEquals($route, $collection->get('foo'), '->get() returns a route by name');
         $this->assertNull($collection->get('bar'), '->get() returns null if a route does not exist');
     }
@@ -67,7 +67,7 @@ public function testIterator()
         $collection->add('last', $last = new Route('/last'));
 
         $this->assertInstanceOf('\ArrayIterator', $collection->getIterator());
-        $this->assertSame(array('bar' => $bar, 'foo' => $foo, 'last' => $last), $collection->getIterator()->getArrayCopy());
+        $this->assertSame(['bar' => $bar, 'foo' => $foo, 'last' => $last], $collection->getIterator()->getArrayCopy());
     }
 
     public function testCount()
@@ -98,7 +98,7 @@ public function testAddCollection()
         $collection->addCollection($collection1);
         $collection->add('last', $last = new Route('/last'));
 
-        $this->assertSame(array('bar' => $bar, 'foo' => $foo, 'grandchild' => $grandchild, 'last' => $last), $collection->all(),
+        $this->assertSame(['bar' => $bar, 'foo' => $foo, 'grandchild' => $grandchild, 'last' => $last], $collection->all(),
             '->addCollection() imports routes of another collection, overrides if necessary and adds them at the end');
     }
 
@@ -109,7 +109,7 @@ public function testAddCollectionWithResources()
         $collection1 = new RouteCollection();
         $collection1->addResource($foo1 = new FileResource(__DIR__.'/Fixtures/foo1.xml'));
         $collection->addCollection($collection1);
-        $this->assertEquals(array($foo, $foo1), $collection->getResources(), '->addCollection() merges resources');
+        $this->assertEquals([$foo, $foo1], $collection->getResources(), '->addCollection() merges resources');
     }
 
     public function testAddDefaultsAndRequirementsAndOptions()
@@ -118,23 +118,23 @@ public function testAddDefaultsAndRequirementsAndOptions()
         $collection->add('foo', new Route('/{placeholder}'));
         $collection1 = new RouteCollection();
         $collection1->add('bar', new Route('/{placeholder}',
-            array('_controller' => 'fixed', 'placeholder' => 'default'), array('placeholder' => '.+'), array('option' => 'value'))
+            ['_controller' => 'fixed', 'placeholder' => 'default'], ['placeholder' => '.+'], ['option' => 'value'])
         );
         $collection->addCollection($collection1);
 
-        $collection->addDefaults(array('placeholder' => 'new-default'));
-        $this->assertEquals(array('placeholder' => 'new-default'), $collection->get('foo')->getDefaults(), '->addDefaults() adds defaults to all routes');
-        $this->assertEquals(array('_controller' => 'fixed', 'placeholder' => 'new-default'), $collection->get('bar')->getDefaults(),
+        $collection->addDefaults(['placeholder' => 'new-default']);
+        $this->assertEquals(['placeholder' => 'new-default'], $collection->get('foo')->getDefaults(), '->addDefaults() adds defaults to all routes');
+        $this->assertEquals(['_controller' => 'fixed', 'placeholder' => 'new-default'], $collection->get('bar')->getDefaults(),
             '->addDefaults() adds defaults to all routes and overwrites existing ones');
 
-        $collection->addRequirements(array('placeholder' => '\d+'));
-        $this->assertEquals(array('placeholder' => '\d+'), $collection->get('foo')->getRequirements(), '->addRequirements() adds requirements to all routes');
-        $this->assertEquals(array('placeholder' => '\d+'), $collection->get('bar')->getRequirements(),
+        $collection->addRequirements(['placeholder' => '\d+']);
+        $this->assertEquals(['placeholder' => '\d+'], $collection->get('foo')->getRequirements(), '->addRequirements() adds requirements to all routes');
+        $this->assertEquals(['placeholder' => '\d+'], $collection->get('bar')->getRequirements(),
             '->addRequirements() adds requirements to all routes and overwrites existing ones');
 
-        $collection->addOptions(array('option' => 'new-value'));
+        $collection->addOptions(['option' => 'new-value']);
         $this->assertEquals(
-            array('option' => 'new-value', 'compiler_class' => 'Symfony\\Component\\Routing\\RouteCompiler'),
+            ['option' => 'new-value', 'compiler_class' => 'Symfony\\Component\\Routing\\RouteCompiler'],
             $collection->get('bar')->getOptions(), '->addOptions() adds options to all routes and overwrites existing ones'
         );
     }
@@ -148,13 +148,13 @@ public function testAddPrefix()
         $collection->addCollection($collection2);
         $collection->addPrefix(' / ');
         $this->assertSame('/foo', $collection->get('foo')->getPath(), '->addPrefix() trims the prefix and a single slash has no effect');
-        $collection->addPrefix('/{admin}', array('admin' => 'admin'), array('admin' => '\d+'));
+        $collection->addPrefix('/{admin}', ['admin' => 'admin'], ['admin' => '\d+']);
         $this->assertEquals('/{admin}/foo', $collection->get('foo')->getPath(), '->addPrefix() adds a prefix to all routes');
         $this->assertEquals('/{admin}/bar', $collection->get('bar')->getPath(), '->addPrefix() adds a prefix to all routes');
-        $this->assertEquals(array('admin' => 'admin'), $collection->get('foo')->getDefaults(), '->addPrefix() adds defaults to all routes');
-        $this->assertEquals(array('admin' => 'admin'), $collection->get('bar')->getDefaults(), '->addPrefix() adds defaults to all routes');
-        $this->assertEquals(array('admin' => '\d+'), $collection->get('foo')->getRequirements(), '->addPrefix() adds requirements to all routes');
-        $this->assertEquals(array('admin' => '\d+'), $collection->get('bar')->getRequirements(), '->addPrefix() adds requirements to all routes');
+        $this->assertEquals(['admin' => 'admin'], $collection->get('foo')->getDefaults(), '->addPrefix() adds defaults to all routes');
+        $this->assertEquals(['admin' => 'admin'], $collection->get('bar')->getDefaults(), '->addPrefix() adds defaults to all routes');
+        $this->assertEquals(['admin' => '\d+'], $collection->get('foo')->getRequirements(), '->addPrefix() adds requirements to all routes');
+        $this->assertEquals(['admin' => '\d+'], $collection->get('bar')->getRequirements(), '->addPrefix() adds requirements to all routes');
         $collection->addPrefix('0');
         $this->assertEquals('/0/{admin}/foo', $collection->get('foo')->getPath(), '->addPrefix() ensures a prefix must start with a slash and must not end with a slash');
         $collection->addPrefix('/ /');
@@ -166,8 +166,8 @@ public function testAddPrefixOverridesDefaultsAndRequirements()
     {
         $collection = new RouteCollection();
         $collection->add('foo', $foo = new Route('/foo.{_format}'));
-        $collection->add('bar', $bar = new Route('/bar.{_format}', array(), array('_format' => 'json')));
-        $collection->addPrefix('/admin', array(), array('_format' => 'html'));
+        $collection->add('bar', $bar = new Route('/bar.{_format}', [], ['_format' => 'json']));
+        $collection->addPrefix('/admin', [], ['_format' => 'html']);
 
         $this->assertEquals('html', $collection->get('foo')->getRequirement('_format'), '->addPrefix() overrides existing requirements');
         $this->assertEquals('html', $collection->get('bar')->getRequirement('_format'), '->addPrefix() overrides existing requirements');
@@ -180,7 +180,7 @@ public function testResource()
         $collection->addResource($bar = new FileResource(__DIR__.'/Fixtures/bar.xml'));
         $collection->addResource(new FileResource(__DIR__.'/Fixtures/foo.xml'));
 
-        $this->assertEquals(array($foo, $bar), $collection->getResources(),
+        $this->assertEquals([$foo, $bar], $collection->getResources(),
             '->addResource() adds a resource and getResources() only returns unique ones by comparing the string representation');
     }
 
@@ -227,16 +227,16 @@ public function testRemove()
         $collection->add('last', $last = new Route('/last'));
 
         $collection->remove('foo');
-        $this->assertSame(array('bar' => $bar, 'last' => $last), $collection->all(), '->remove() can remove a single route');
-        $collection->remove(array('bar', 'last'));
-        $this->assertSame(array(), $collection->all(), '->remove() accepts an array and can remove multiple routes at once');
+        $this->assertSame(['bar' => $bar, 'last' => $last], $collection->all(), '->remove() can remove a single route');
+        $collection->remove(['bar', 'last']);
+        $this->assertSame([], $collection->all(), '->remove() accepts an array and can remove multiple routes at once');
     }
 
     public function testSetHost()
     {
         $collection = new RouteCollection();
         $routea = new Route('/a');
-        $routeb = new Route('/b', array(), array(), array(), '{locale}.example.net');
+        $routeb = new Route('/b', [], [], [], '{locale}.example.net');
         $collection->add('a', $routea);
         $collection->add('b', $routeb);
 
@@ -250,7 +250,7 @@ public function testSetCondition()
     {
         $collection = new RouteCollection();
         $routea = new Route('/a');
-        $routeb = new Route('/b', array(), array(), array(), '{locale}.example.net', array(), array(), 'context.getMethod() == "GET"');
+        $routeb = new Route('/b', [], [], [], '{locale}.example.net', [], [], 'context.getMethod() == "GET"');
         $collection->add('a', $routea);
         $collection->add('b', $routeb);
 
@@ -264,7 +264,7 @@ public function testClone()
     {
         $collection = new RouteCollection();
         $collection->add('a', new Route('/a'));
-        $collection->add('b', new Route('/b', array('placeholder' => 'default'), array('placeholder' => '.+')));
+        $collection->add('b', new Route('/b', ['placeholder' => 'default'], ['placeholder' => '.+']));
 
         $clonedCollection = clone $collection;
 
@@ -278,28 +278,28 @@ public function testClone()
     public function testSetSchemes()
     {
         $collection = new RouteCollection();
-        $routea = new Route('/a', array(), array(), array(), '', 'http');
+        $routea = new Route('/a', [], [], [], '', 'http');
         $routeb = new Route('/b');
         $collection->add('a', $routea);
         $collection->add('b', $routeb);
 
-        $collection->setSchemes(array('http', 'https'));
+        $collection->setSchemes(['http', 'https']);
 
-        $this->assertEquals(array('http', 'https'), $routea->getSchemes());
-        $this->assertEquals(array('http', 'https'), $routeb->getSchemes());
+        $this->assertEquals(['http', 'https'], $routea->getSchemes());
+        $this->assertEquals(['http', 'https'], $routeb->getSchemes());
     }
 
     public function testSetMethods()
     {
         $collection = new RouteCollection();
-        $routea = new Route('/a', array(), array(), array(), '', array(), array('GET', 'POST'));
+        $routea = new Route('/a', [], [], [], '', [], ['GET', 'POST']);
         $routeb = new Route('/b');
         $collection->add('a', $routea);
         $collection->add('b', $routeb);
 
         $collection->setMethods('PUT');
 
-        $this->assertEquals(array('PUT'), $routea->getMethods());
-        $this->assertEquals(array('PUT'), $routeb->getMethods());
+        $this->assertEquals(['PUT'], $routea->getMethods());
+        $this->assertEquals(['PUT'], $routeb->getMethods());
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php b/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
index dc304e3e7d54..d9783147b8de 100644
--- a/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
@@ -34,153 +34,153 @@ public function testCompile($name, $arguments, $prefix, $regex, $variables, $tok
 
     public function provideCompileData()
     {
-        return array(
-            array(
+        return [
+            [
                 'Static route',
-                array('/foo'),
-                '/foo', '#^/foo$#sD', array(), array(
-                    array('text', '/foo'),
-                ),
-            ),
+                ['/foo'],
+                '/foo', '#^/foo$#sD', [], [
+                    ['text', '/foo'],
+                ],
+            ],
 
-            array(
+            [
                 'Route with a variable',
-                array('/foo/{bar}'),
-                '/foo', '#^/foo/(?P<bar>[^/]++)$#sD', array('bar'), array(
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}'],
+                '/foo', '#^/foo/(?P<bar>[^/]++)$#sD', ['bar'], [
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with a variable that has a default value',
-                array('/foo/{bar}', array('bar' => 'bar')),
-                '/foo', '#^/foo(?:/(?P<bar>[^/]++))?$#sD', array('bar'), array(
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}', ['bar' => 'bar']],
+                '/foo', '#^/foo(?:/(?P<bar>[^/]++))?$#sD', ['bar'], [
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with several variables',
-                array('/foo/{bar}/{foobar}'),
-                '/foo', '#^/foo/(?P<bar>[^/]++)/(?P<foobar>[^/]++)$#sD', array('bar', 'foobar'), array(
-                    array('variable', '/', '[^/]++', 'foobar'),
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}/{foobar}'],
+                '/foo', '#^/foo/(?P<bar>[^/]++)/(?P<foobar>[^/]++)$#sD', ['bar', 'foobar'], [
+                    ['variable', '/', '[^/]++', 'foobar'],
+                    ['variable', '/', '[^/]++', 'bar'],
+                    [
97AE
'text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with several variables that have default values',
-                array('/foo/{bar}/{foobar}', array('bar' => 'bar', 'foobar' => '')),
-                '/foo', '#^/foo(?:/(?P<bar>[^/]++)(?:/(?P<foobar>[^/]++))?)?$#sD', array('bar', 'foobar'), array(
-                    array('variable', '/', '[^/]++', 'foobar'),
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}/{foobar}', ['bar' => 'bar', 'foobar' => '']],
+                '/foo', '#^/foo(?:/(?P<bar>[^/]++)(?:/(?P<foobar>[^/]++))?)?$#sD', ['bar', 'foobar'], [
+                    ['variable', '/', '[^/]++', 'foobar'],
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with several variables but some of them have no default values',
-                array('/foo/{bar}/{foobar}', array('bar' => 'bar')),
-                '/foo', '#^/foo/(?P<bar>[^/]++)/(?P<foobar>[^/]++)$#sD', array('bar', 'foobar'), array(
-                    array('variable', '/', '[^/]++', 'foobar'),
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}/{foobar}', ['bar' => 'bar']],
+                '/foo', '#^/foo/(?P<bar>[^/]++)/(?P<foobar>[^/]++)$#sD', ['bar', 'foobar'], [
+                    ['variable', '/', '[^/]++', 'foobar'],
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with an optional variable as the first segment',
-                array('/{bar}', array('bar' => 'bar')),
-                '', '#^/(?P<bar>[^/]++)?$#sD', array('bar'), array(
-                    array('variable', '/', '[^/]++', 'bar'),
-                ),
-            ),
+                ['/{bar}', ['bar' => 'bar']],
+                '', '#^/(?P<bar>[^/]++)?$#sD', ['bar'], [
+                    ['variable', '/', '[^/]++', 'bar'],
+                ],
+            ],
 
-            array(
+            [
                 'Route with a requirement of 0',
-                array('/{bar}', array('bar' => null), array('bar' => '0')),
-                '', '#^/(?P<bar>0)?$#sD', array('bar'), array(
-                    array('variable', '/', '0', 'bar'),
-                ),
-            ),
+                ['/{bar}', ['bar' => null], ['bar' => '0']],
+                '', '#^/(?P<bar>0)?$#sD', ['bar'], [
+                    ['variable', '/', '0', 'bar'],
+                ],
+            ],
 
-            array(
+            [
                 'Route with an optional variable as the first segment with requirements',
-                array('/{bar}', array('bar' => 'bar'), array('bar' => '(foo|bar)')),
-                '', '#^/(?P<bar>(foo|bar))?$#sD', array('bar'), array(
-                    array('variable', '/', '(foo|bar)', 'bar'),
-                ),
-            ),
+                ['/{bar}', ['bar' => 'bar'], ['bar' => '(foo|bar)']],
+                '', '#^/(?P<bar>(foo|bar))?$#sD', ['bar'], [
+                    ['variable', '/', '(foo|bar)', 'bar'],
+                ],
+            ],
 
-            array(
+            [
                 'Route with only optional variables',
-                array('/{foo}/{bar}', array('foo' => 'foo', 'bar' => 'bar')),
-                '', '#^/(?P<foo>[^/]++)?(?:/(?P<bar>[^/]++))?$#sD', array('foo', 'bar'), array(
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('variable', '/', '[^/]++', 'foo'),
-                ),
-            ),
-
-            array(
+                ['/{foo}/{bar}', ['foo' => 'foo', 'bar' => 'bar']],
+                '', '#^/(?P<foo>[^/]++)?(?:/(?P<bar>[^/]++))?$#sD', ['foo', 'bar'], [
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['variable', '/', '[^/]++', 'foo'],
+                ],
+            ],
+
+            [
                 'Route with a variable in last position',
-                array('/foo-{bar}'),
-                '/foo-', '#^/foo\-(?P<bar>[^/]++)$#sD', array('bar'), array(
-                    array('variable', '-', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo-{bar}'],
+                '/foo-', '#^/foo\-(?P<bar>[^/]++)$#sD', ['bar'], [
+                    ['variable', '-', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with nested placeholders',
-                array('/{static{var}static}'),
-                '/{static', '#^/\{static(?P<var>[^/]+)static\}$#sD', array('var'), array(
-                    array('text', 'static}'),
-                    array('variable', '', '[^/]+', 'var'),
-                    array('text', '/{static'),
-                ),
-            ),
-
-            array(
+                ['/{static{var}static}'],
+                '/{static', '#^/\{static(?P<var>[^/]+)static\}$#sD', ['var'], [
+                    ['text', 'static}'],
+                    ['variable', '', '[^/]+', 'var'],
+                    ['text', '/{static'],
+                ],
+            ],
+
+            [
                 'Route without separator between variables',
-                array('/{w}{x}{y}{z}.{_format}', array('z' => 'default-z', '_format' => 'html'), array('y' => '(y|Y)')),
-                '', '#^/(?P<w>[^/\.]+)(?P<x>[^/\.]+)(?P<y>(y|Y))(?:(?P<z>[^/\.]++)(?:\.(?P<_format>[^/]++))?)?$#sD', array('w', 'x', 'y', 'z', '_format'), array(
-                    array('variable', '.', '[^/]++', '_format'),
-                    array('variable', '', '[^/\.]++', 'z'),
-                    array('variable', '', '(y|Y)', 'y'),
-                    array('variable', '', '[^/\.]+', 'x'),
-                    array('variable', '/', '[^/\.]+', 'w'),
-                ),
-            ),
-
-            array(
+                ['/{w}{x}{y}{z}.{_format}', ['z' => 'default-z', '_format' => 'html'], ['y' => '(y|Y)']],
+                '', '#^/(?P<w>[^/\.]+)(?P<x>[^/\.]+)(?P<y>(y|Y))(?:(?P<z>[^/\.]++)(?:\.(?P<_format>[^/]++))?)?$#sD', ['w', 'x', 'y', 'z', '_format'], [
+                    ['variable', '.', '[^/]++', '_format'],
+                    ['variable', '', '[^/\.]++', 'z'],
+                    ['variable', '', '(y|Y)', 'y'],
+                    ['variable', '', '[^/\.]+', 'x'],
+                    ['variable', '/', '[^/\.]+', 'w'],
+                ],
+            ],
+
+            [
                 'Route with a format',
-                array('/foo/{bar}.{_format}'),
-                '/foo', '#^/foo/(?P<bar>[^/\.]++)\.(?P<_format>[^/]++)$#sD', array('bar', '_format'), array(
-                    array('variable', '.', '[^/]++', '_format'),
-                    array('variable', '/', '[^/\.]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}.{_format}'],
+                '/foo', '#^/foo/(?P<bar>[^/\.]++)\.(?P<_format>[^/]++)$#sD', ['bar', '_format'], [
+                    ['variable', '.', '[^/]++', '_format'],
+                    ['variable', '/', '[^/\.]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Static non UTF-8 route',
-                array("/fo\xE9"),
-                "/fo\xE9", "#^/fo\xE9$#sD", array(), array(
-                    array('text', "/fo\xE9"),
-                ),
-            ),
+                ["/fo\xE9"],
+                "/fo\xE9", "#^/fo\xE9$#sD", [], [
+                    ['text', "/fo\xE9"],
+                ],
+            ],
 
-            array(
+            [
                 'Route with an explicit UTF-8 requirement',
-                array('/{bar}', array('bar' => null), array('bar' => '.'), array('utf8' => true)),
-                '', '#^/(?P<bar>.)?$#sDu', array('bar'), array(
-                    array('variable', '/', '.', 'bar', true),
-                ),
-            ),
-        );
+                ['/{bar}', ['bar' => null], ['bar' => '.'], ['utf8' => true]],
+                '', '#^/(?P<bar>.)?$#sDu', ['bar'], [
+                    ['variable', '/', '.', 'bar', true],
+                ],
+            ],
+        ];
     }
 
     /**
@@ -202,45 +202,45 @@ public function testCompileImplicitUtf8Data($name, $arguments, $prefix, $regex,
 
     public function provideCompileImplicitUtf8Data()
     {
-        return array(
-            array(
+        return [
+            [
                 'Static UTF-8 route',
-                array('/foé'),
-                '/foé', '#^/foé$#sDu', array(), array(
-                    array('text', '/foé'),
-                ),
+                ['/foé'],
+                '/foé', '#^/foé$#sDu', [], [
+                    ['text', '/foé'],
+                ],
                 'patterns',
-            ),
+            ],
 
-            array(
+            [
                 'Route with an implicit UTF-8 requirement',
-                array('/{bar}', array('bar' => null), array('bar' => 'é')),
-                '', '#^/(?P<bar>é)?$#sDu', array('bar'), array(
-                    array('variable', '/', 'é', 'bar', true),
-                ),
+                ['/{bar}', ['bar' => null], ['bar' => 'é']],
+                '', '#^/(?P<bar>é)?$#sDu', ['bar'], [
+                    ['variable', '/', 'é', 'bar', true],
+                ],
                 'requirements',
-            ),
+            ],
 
-            array(
+            [
                 'Route with a UTF-8 class requirement',
-                array('/{bar}', array('bar' => null), array('bar' => '\pM')),
-                '', '#^/(?P<bar>\pM)?$#sDu', array('bar'), array(
-                    array('variable', '/', '\pM', 'bar', true),
-                ),
+                ['/{bar}', ['bar' => null], ['bar' => '\pM']],
+                '', '#^/(?P<bar>\pM)?$#sDu', ['bar'], [
+                    ['variable', '/', '\pM', 'bar', true],
+                ],
                 'requirements',
-            ),
+            ],
 
-            array(
+            [
                 'Route with a UTF-8 separator',
-                array('/foo/{bar}§{_format}', array(), array(), array('compiler_class' => Utf8RouteCompiler::class)),
-                '/foo', '#^/foo/(?P<bar>[^/§]++)§(?P<_format>[^/]++)$#sDu', array('bar', '_format'), array(
-                    array('variable', '§', '[^/]++', '_format', true),
-                    array('variable', '/', '[^/§]++', 'bar', true),
-                    array('text', '/foo'),
-                ),
+                ['/foo/{bar}§{_format}', [], [], ['compiler_class' => Utf8RouteCompiler::class]],
+                '/foo', '#^/foo/(?P<bar>[^/§]++)§(?P<_format>[^/]++)$#sDu', ['bar', '_format'], [
+                    ['variable', '§', '[^/]++', '_format', true],
+                    ['variable', '/', '[^/§]++', 'bar', true],
+                    ['text', '/foo'],
+                ],
                 'patterns',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -258,7 +258,7 @@ public function testRouteWithSameVariableTwice()
      */
     public function testRouteCharsetMismatch()
     {
-        $route = new Route("/\xE9/{bar}", array(), array('bar' => '.'), array('utf8' => true));
+        $route = new Route("/\xE9/{bar}", [], ['bar' => '.'], ['utf8' => true]);
 
         $compiled = $route->compile();
     }
@@ -268,7 +268,7 @@ public function testRouteCharsetMismatch()
      */
     public function testRequirementCharsetMismatch()
     {
-        $route = new Route('/foo/{bar}', array(), array('bar' => "\xE9"), array('utf8' => true));
+        $route = new Route('/foo/{bar}', [], ['bar' => "\xE9"], ['utf8' => true]);
 
         $compiled = $route->compile();
     }
@@ -295,11 +295,11 @@ public function testRouteWithVariableNameStartingWithADigit($name)
 
     public function getVariableNamesStartingWithADigit()
     {
-        return array(
-           array('09'),
-           array('123'),
-           array('1e2'),
-        );
+        return [
+           ['09'],
+           ['123'],
+           ['1e2'],
+        ];
     }
 
     /**
@@ -312,65 +312,65 @@ public function testCompileWithHost($name, $arguments, $prefix, $regex, $variabl
 
         $compiled = $route->compile();
         $this->assertEquals($prefix, $compiled->getStaticPrefix(), $name.' (static prefix)');
-        $this->assertEquals($regex, str_replace(array("\n", ' '), '', $compiled->getRegex()), $name.' (regex)');
+        $this->assertEquals($regex, str_replace(["\n", ' '], '', $compiled->getRegex()), $name.' (regex)');
         $this->assertEquals($variables, $compiled->getVariables(), $name.' (variables)');
         $this->assertEquals($pathVariables, $compiled->getPathVariables(), $name.' (path variables)');
         $this->assertEquals($tokens, $compiled->getTokens(), $name.' (tokens)');
-        $this->assertEquals($hostRegex, str_replace(array("\n", ' '), '', $compiled->getHostRegex()), $name.' (host regex)');
+        $this->assertEquals($hostRegex, str_replace(["\n", ' '], '', $compiled->getHostRegex()), $name.' (host regex)');
         $this->assertEquals($hostVariables, $compiled->getHostVariables(), $name.' (host variables)');
         $this->assertEquals($hostTokens, $compiled->getHostTokens(), $name.' (host tokens)');
     }
 
     public function provideCompileWithHostData()
     {
-        return array(
-            array(
+        return [
+            [
                 'Route with host pattern',
-                array('/hello', array(), array(), array(), 'www.example.com'),
-                '/hello', '#^/hello$#sD', array(), array(), array(
-                    array('text', '/hello'),
-                ),
-                '#^www\.example\.com$#sDi', array(), array(
-                    array('text', 'www.example.com'),
-                ),
-            ),
-            array(
+                ['/hello', [], [], [], 'www.example.com'],
+                '/hello', '#^/hello$#sD', [], [], [
+                    ['text', '/hello'],
+                ],
+                '#^www\.example\.com$#sDi', [], [
+                    ['text', 'www.example.com'],
+                ],
+            ],
+            [
                 'Route with host pattern and some variables',
-                array('/hello/{name}', array(), array(), array(), 'www.example.{tld}'),
-                '/hello', '#^/hello/(?P<name>[^/]++)$#sD', array('tld', 'name'), array('name'), array(
-                    array('variable', '/', '[^/]++', 'name'),
-                    array('text', '/hello'),
-                ),
-                '#^www\.example\.(?P<tld>[^\.]++)$#sDi', array('tld'), array(
-                    array('variable', '.', '[^\.]++', 'tld'),
-                    array('text', 'www.example'),
-                ),
-            ),
-            array(
+                ['/hello/{name}', [], [], [], 'www.example.{tld}'],
+                '/hello', '#^/hello/(?P<name>[^/]++)$#sD', ['tld', 'name'], ['name'], [
+                    ['variable', '/', '[^/]++', 'name'],
+                    ['text', '/hello'],
+                ],
+                '#^www\.example\.(?P<tld>[^\.]++)$#sDi', ['tld'], [
+                    ['variable', '.', '[^\.]++', 'tld'],
+                    ['text', 'www.example'],
+                ],
+            ],
+            [
                 'Route with variable at beginning of host',
-                array('/hello', array(), array(), array(), '{locale}.example.{tld}'),
-                '/hello', '#^/hello$#sD', array('locale', 'tld'), array(), array(
-                    array('text', '/hello'),
-                ),
-                '#^(?P<locale>[^\.]++)\.example\.(?P<tld>[^\.]++)$#sDi', array('locale', 'tld'), array(
-                    array('variable', '.', '[^\.]++', 'tld'),
-                    array('text', '.example'),
-                    array('variable', '', '[^\.]++', 'locale'),
-                ),
-            ),
-            array(
+                ['/hello', [], [], [], '{locale}.example.{tld}'],
+                '/hello', '#^/hello$#sD', ['locale', 'tld'], [], [
+                    ['text', '/hello'],
+                ],
+                '#^(?P<locale>[^\.]++)\.example\.(?P<tld>[^\.]++)$#sDi', ['locale', 'tld'], [
+                    ['variable', '.', '[^\.]++', 'tld'],
+                    ['text', '.example'],
+                    ['variable', '', '[^\.]++', 'locale'],
+                ],
+            ],
+            [
                 'Route with host variables that has a default value',
-                array('/hello', array('locale' => 'a', 'tld' => 'b'), array(), array(), '{locale}.example.{tld}'),
-                '/hello', '#^/hello$#sD', array('locale', 'tld'), array(), array(
-                    array('text', '/hello'),
-                ),
-                '#^(?P<locale>[^\.]++)\.example\.(?P<tld>[^\.]++)$#sDi', array('locale', 'tld'), array(
-                    array('variable', '.', '[^\.]++', 'tld'),
-                    array('text', '.example'),
-                    array('variable', '', '[^\.]++', 'locale'),
-                ),
-            ),
-        );
+                ['/hello', ['locale' => 'a', 'tld' => 'b'], [], [], '{locale}.example.{tld}'],
+                '/hello', '#^/hello$#sD', ['locale', 'tld'], [], [
+                    ['text', '/hello'],
+                ],
+                '#^(?P<locale>[^\.]++)\.example\.(?P<tld>[^\.]++)$#sDi', ['locale', 'tld'], [
+                    ['variable', '.', '[^\.]++', 'tld'],
+                    ['text', '.example'],
+                    ['variable', '', '[^\.]++', 'locale'],
+                ],
+            ],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Routing/Tests/RouteTest.php b/src/Symfony/Component/Routing/Tests/RouteTest.php
index c7af058e3b09..1c9f3e18671b 100644
--- a/src/Symfony/Component/Routing/Tests/RouteTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteTest.php
@@ -18,21 +18,21 @@ class RouteTest extends TestCase
 {
     public function testConstructor()
     {
-        $route = new Route('/{foo}', array('foo' => 'bar'), array('foo' => '\d+'), array('foo' => 'bar'), '{locale}.example.com');
+        $route = new Route('/{foo}', ['foo' => 'bar'], ['foo' => '\d+'], ['foo' => 'bar'], '{locale}.example.com');
         $this->assertEquals('/{foo}', $route->getPath(), '__construct() takes a path as its first argument');
-        $this->assertEquals(array('foo' => 'bar'), $route->getDefaults(), '__construct() takes defaults as its second argument');
-        $this->assertEquals(array('foo' => '\d+'), $route->getRequirements(), '__construct() takes requirements as its third argument');
+        $this->assertEquals(['foo' => 'bar'], $route->getDefaults(), '__construct() takes defaults as its second argument');
+        $this->assertEquals(['foo' => '\d+'], $route->getRequirements(), '__construct() takes requirements as its third argument');
         $this->assertEquals('bar', $route->getOption('foo'), '__construct() takes options as its fourth argument');
         $this->assertEquals('{locale}.example.com', $route->getHost(), '__construct() takes a host pattern as its fifth argument');
 
-        $route = new Route('/', array(), array(), array(), '', array('Https'), array('POST', 'put'), 'context.getMethod() == "GET"');
-        $this->assertEquals(array('https'), $route->getSchemes(), '__construct() takes schemes as its sixth argument and lowercases it');
-        $this->assertEquals(array('POST', 'PUT'), $route->getMethods(), '__construct() takes methods as its seventh argument and uppercases it');
+        $route = new Route('/', [], [], [], '', ['Https'], ['POST', 'put'], 'context.getMethod() == "GET"');
+        $this->assertEquals(['https'], $route->getSchemes(), '__construct() takes schemes as its sixth argument and lowercases it');
+        $this->assertEquals(['POST', 'PUT'], $route->getMethods(), '__construct() takes methods as its seventh argument and uppercases it');
         $this->assertEquals('context.getMethod() == "GET"', $route->getCondition(), '__construct() takes a condition as its eight argument');
 
-        $route = new Route('/', array(), array(), array(), '', 'Https', 'Post');
-        $this->assertEquals(array('https'), $route->getSchemes(), '__construct() takes a single scheme as its sixth argument');
-        $this->assertEquals(array('POST'), $route->getMethods(), '__construct() takes a single method as its seventh argument');
+        $route = new Route('/', [], [], [], '', 'Https', 'Post');
+        $this->assertEquals(['https'], $route->getSchemes(), '__construct() takes a single scheme as its sixth argument');
+        $this->assertEquals(['POST'], $route->getMethods(), '__construct() takes a single method as its seventh argument');
     }
 
     public function testPath()
@@ -52,16 +52,16 @@ public function testPath()
     public function testOptions()
     {
         $route = new Route('/{foo}');
-        $route->setOptions(array('foo' => 'bar'));
-        $this->assertEquals(array_merge(array(
+        $route->setOptions(['foo' => 'bar']);
+        $this->assertEquals(array_merge([
         'compiler_class' => 'Symfony\\Component\\Routing\\RouteCompiler',
-        ), array('foo' => 'bar')), $route->getOptions(), '->setOptions() sets the options');
-        $this->assertEquals($route, $route->setOptions(array()), '->setOptions() implements a fluent interface');
+        ], ['foo' => 'bar']), $route->getOptions(), '->setOptions() sets the options');
+        $this->assertEquals($route, $route->setOptions([]), '->setOptions() implements a fluent interface');
 
-        $route->setOptions(array('foo' => 'foo'));
-        $route->addOptions(array('bar' => 'bar'));
-        $this->assertEquals($route, $route->addOptions(array()), '->addOptions() implements a fluent interface');
-        $this->assertEquals(array('foo' => 'foo', 'bar' => 'bar', 'compiler_class' => 'Symfony\\Component\\Routing\\RouteCompiler'), $route->getOptions(), '->addDefaults() keep previous defaults');
+        $route->setOptions(['foo' => 'foo']);
+        $route->addOptions(['bar' => 'bar']);
+        $this->assertEquals($route, $route->addOptions([]), '->addOptions() implements a fluent interface');
+        $this->assertEquals(['foo' => 'foo', 'bar' => 'bar', 'compiler_class' => 'Symfony\\Component\\Routing\\RouteCompiler'], $route->getOptions(), '->addDefaults() keep previous defaults');
     }
 
     public function testOption()
@@ -76,9 +76,9 @@ public function testOption()
     public function testDefaults()
     {
         $route = new Route('/{foo}');
-        $route->setDefaults(array('foo' => 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $route->getDefaults(), '->setDefaults() sets the defaults');
-        $this->assertEquals($route, $route->setDefaults(array()), '->setDefaults() implements a fluent interface');
+        $route->setDefaults(['foo' => 'bar']);
+        $this->assertEquals(['foo' => 'bar'], $route->getDefaults(), '->setDefaults() sets the defaults');
+        $this->assertEquals($route, $route->setDefaults([]), '->setDefaults() implements a fluent interface');
 
         $route->setDefault('foo', 'bar');
         $this->assertEquals('bar', $route->getDefault('foo'), '->setDefault() sets a default value');
@@ -90,27 +90,27 @@ public function testDefaults()
         $route->setDefault('_controller', $closure = function () { return 'Hello'; });
         $this->assertEquals($closure, $route->getDefault('_controller'), '->setDefault() sets a default value');
 
-        $route->setDefaults(array('foo' => 'foo'));
-        $route->addDefaults(array('bar' => 'bar'));
-        $this->assertEquals($route, $route->addDefaults(array()), '->addDefaults() implements a fluent interface');
-        $this->assertEquals(array('foo' => 'foo', 'bar' => 'bar'), $route->getDefaults(), '->addDefaults() keep previous defaults');
+        $route->setDefaults(['foo' => 'foo']);
+        $route->addDefaults(['bar' => 'bar']);
+        $this->assertEquals($route, $route->addDefaults([]), '->addDefaults() implements a fluent interface');
+        $this->assertEquals(['foo' => 'foo', 'bar' => 'bar'], $route->getDefaults(), '->addDefaults() keep previous defaults');
     }
 
     public function testRequirements()
     {
         $route = new Route('/{foo}');
-        $route->setRequirements(array('foo' => '\d+'));
-        $this->assertEquals(array('foo' => '\d+'), $route->getRequirements(), '->setRequirements() sets the requirements');
+        $route->setRequirements(['foo' => '\d+']);
+        $this->assertEquals(['foo' => '\d+'], $route->getRequirements(), '->setRequirements() sets the requirements');
         $this->assertEquals('\d+', $route->getRequirement('foo'), '->getRequirement() returns a requirement');
         $this->assertNull($route->getRequirement('bar'), '->getRequirement() returns null if a requirement is not defined');
-        $route->setRequirements(array('foo' => '^\d+$'));
+        $route->setRequirements(['foo' => '^\d+$']);
         $this->assertEquals('\d+', $route->getRequirement('foo'), '->getRequirement() removes ^ and $ from the path');
-        $this->assertEquals($route, $route->setRequirements(array()), '->setRequirements() implements a fluent interface');
+        $this->assertEquals($route, $route->setRequirements([]), '->setRequirements() implements a fluent interface');
 
-        $route->setRequirements(array('foo' => '\d+'));
-        $route->addRequirements(array('bar' => '\d+'));
-        $this->assertEquals($route, $route->addRequirements(array()), '->addRequirements() implements a fluent interface');
-        $this->assertEquals(array('foo' => '\d+', 'bar' => '\d+'), $route->getRequirements(), '->addRequirement() keep previous requirements');
+        $route->setRequirements(['foo' => '\d+']);
+        $route->addRequirements(['bar' => '\d+']);
+        $this->assertEquals($route, $route->addRequirements([]), '->addRequirements() implements a fluent interface');
+        $this->assertEquals(['foo' => '\d+', 'bar' => '\d+'], $route->getRequirements(), '->addRequirement() keep previous requirements');
     }
 
     public function testRequirement()
@@ -134,13 +134,13 @@ public function testSetInvalidRequirement($req)
 
     public function getInvalidRequirements()
     {
-        return array(
-           array(''),
-           array(array()),
-           array('^$'),
-           array('^'),
-           array('$'),
-        );
+        return [
+           [''],
+           [[]],
+           ['^$'],
+           ['^'],
+           ['$'],
+        ];
     }
 
     public function testHost()
@@ -153,14 +153,14 @@ public function testHost()
     public function testScheme()
     {
         $route = new Route('/');
-        $this->assertEquals(array(), $route->getSchemes(), 'schemes is initialized with array()');
+        $this->assertEquals([], $route->getSchemes(), 'schemes is initialized with array()');
         $this->assertFalse($route->hasScheme('http'));
         $route->setSchemes('hTTp');
-        $this->assertEquals(array('http'), $route->getSchemes(), '->setSchemes() accepts a single scheme string and lowercases it');
+        $this->assertEquals(['http'], $route->getSchemes(), '->setSchemes() accepts a single scheme string and lowercases it');
         $this->assertTrue($route->hasScheme('htTp'));
         $this->assertFalse($route->hasScheme('httpS'));
-        $route->setSchemes(array('HttpS', 'hTTp'));
-        $this->assertEquals(array('https', 'http'), $route->getSchemes(), '->setSchemes() accepts an array of schemes and lowercases them');
+        $route->setSchemes(['HttpS', 'hTTp']);
+        $this->assertEquals(['https', 'http'], $route->getSchemes(), '->setSchemes() accepts an array of schemes and lowercases them');
         $this->assertTrue($route->hasScheme('htTp'));
         $this->assertTrue($route->hasScheme('httpS'));
     }
@@ -168,11 +168,11 @@ public function testScheme()
     public function testMethod()
     {
         $route = new Route('/');
-        $this->assertEquals(array(), $route->getMethods(), 'methods is initialized with array()');
+        $this->assertEquals([], $route->getMethods(), 'methods is initialized with array()');
         $route->setMethods('gEt');
-        $this->assertEquals(array('GET'), $route->getMethods(), '->setMethods() accepts a single method string and uppercases it');
-        $route->setMethods(array('gEt', 'PosT'));
-        $this->assertEquals(array('GET', 'POST'), $route->getMethods(), '->setMethods() accepts an array of methods and uppercases them');
+        $this->assertEquals(['GET'], $route->getMethods(), '->setMethods() accepts a single method string and uppercases it');
+        $route->setMethods(['gEt', 'PosT']);
+        $this->assertEquals(['GET', 'POST'], $route->getMethods(), '->setMethods() accepts an array of methods and uppercases them');
     }
 
     public function testCondition()
@@ -194,7 +194,7 @@ public function testCompile()
 
     public function testSerialize()
     {
-        $route = new Route('/prefix/{foo}', array('foo' => 'default'), array('foo' => '\d+'));
+        $route = new Route('/prefix/{foo}', ['foo' => 'default'], ['foo' => '\d+']);
 
         $serialized = serialize($route);
         $unserialized = unserialize($serialized);
@@ -209,7 +209,7 @@ public function testSerialize()
      */
     public function testSerializeWhenCompiled()
     {
-        $route = new Route('/prefix/{foo}', array('foo' => 'default'), array('foo' => '\d+'));
+        $route = new Route('/prefix/{foo}', ['foo' => 'default'], ['foo' => '\d+']);
         $route->setHost('{locale}.example.net');
         $route->compile();
 
@@ -226,7 +226,7 @@ public function testSerializeWhenCompiled()
      */
     public function testSerializeWhenCompiledWithClass()
     {
-        $route = new Route('/', array(), array(), array('compiler_class' => '\Symfony\Component\Routing\Tests\Fixtures\CustomRouteCompiler'));
+        $route = new Route('/', [], [], ['compiler_class' => '\Symfony\Component\Routing\Tests\Fixtures\CustomRouteCompiler']);
         $this->assertInstanceOf('\Symfony\Component\Routing\Tests\Fixtures\CustomCompiledRoute', $route->compile(), '->compile() returned a proper route');
 
         $serialized = serialize($route);
@@ -248,7 +248,7 @@ public function testSerializedRepresentationKeepsWorking()
         $serialized = 'C:31:"Symfony\Component\Routing\Route":936:{a:8:{s:4:"path";s:13:"/prefix/{foo}";s:4:"host";s:20:"{locale}.example.net";s:8:"defaults";a:1:{s:3:"foo";s:7:"default";}s:12:"requirements";a:1:{s:3:"foo";s:3:"\d+";}s:7:"options";a:1:{s:14:"compiler_class";s:39:"Symfony\Component\Routing\RouteCompiler";}s:7:"schemes";a:0:{}s:7:"methods";a:0:{}s:8:"compiled";C:39:"Symfony\Component\Routing\CompiledRoute":571:{a:8:{s:4:"vars";a:2:{i:0;s:6:"locale";i:1;s:3:"foo";}s:11:"path_prefix";s:7:"/prefix";s:10:"path_regex";s:31:"#^/prefix(?:/(?P<foo>\d+))?$#sD";s:11:"path_tokens";a:2:{i:0;a:4:{i:0;s:8:"variable";i:1;s:1:"/";i:2;s:3:"\d+";i:3;s:3:"foo";}i:1;a:2:{i:0;s:4:"text";i:1;s:7:"/prefix";}}s:9:"path_vars";a:1:{i:0;s:3:"foo";}s:10:"host_regex";s:40:"#^(?P<locale>[^\.]++)\.example\.net$#sDi";s:11:"host_tokens";a:2:{i:0;a:2:{i:0;s:4:"text";i:1;s:12:".example.net";}i:1;a:4:{i:0;s:8:"variable";i:1;s:0:"";i:2;s:7:"[^\.]++";i:3;s:6:"locale";}}s:9:"host_vars";a:1:{i:0;s:6:"locale";}}}}}';
         $unserialized = unserialize($serialized);
 
-        $route = new Route('/prefix/{foo}', array('foo' => 'default'), array('foo' => '\d+'));
+        $route = new Route('/prefix/{foo}', ['foo' => 'default'], ['foo' => '\d+']);
         $route->setHost('{locale}.example.net');
         $route->compile();
 
diff --git a/src/Symfony/Component/Routing/Tests/RouterTest.php b/src/Symfony/Component/Routing/Tests/RouterTest.php
index e01bd9c610c2..589ce5403ac2 100644
--- a/src/Symfony/Component/Routing/Tests/RouterTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouterTest.php
@@ -30,11 +30,11 @@ protected function setUp()
 
     public function testSetOptionsWithSupportedOptions()
     {
-        $this->router->setOptions(array(
+        $this->router->setOptions([
             'cache_dir' => './cache',
             'debug' => true,
             'resource_type' => 'ResourceType',
-        ));
+        ]);
 
         $this->assertSame('./cache', $this->router->getOption('cache_dir'));
         $this->assertTrue($this->router->getOption('debug'));
@@ -47,12 +47,12 @@ public function testSetOptionsWithSupportedOptions()
      */
     public function testSetOptionsWithUnsupportedOptions()
     {
-        $this->router->setOptions(array(
+        $this->router->setOptions([
             'cache_dir' => './cache',
             'option_foo' => true,
             'option_bar' => 'baz',
             'resource_type' => 'ResourceType',
-        ));
+        ]);
     }
 
     public function testSetOptionWithSupportedOption()
@@ -109,10 +109,10 @@ public function testMatcherIsCreatedIfCacheIsNotConfigured($option)
 
     public function provideMatcherOptionsPreventingCaching()
     {
-        return array(
-            array('cache_dir'),
-            array('matcher_cache_class'),
-        );
+        return [
+            ['cache_dir'],
+            ['matcher_cache_class'],
+        ];
     }
 
     /**
@@ -131,10 +131,10 @@ public function testGeneratorIsCreatedIfCacheIsNotConfigured($option)
 
     public function provideGeneratorOptionsPreventingCaching()
     {
-        return array(
-            array('cache_dir'),
-            array('generator_cache_class'),
-        );
+        return [
+            ['cache_dir'],
+            ['generator_cache_class'],
+        ];
     }
 
     public function testMatchRequestWithUrlMatcherInterface()
diff --git a/src/Symfony/Component/Security/Core/Authentication/RememberMe/InMemoryTokenProvider.php b/src/Symfony/Component/Security/Core/Authentication/RememberMe/InMemoryTokenProvider.php
index 719d7a16d81d..71e3b6a8afe5 100644
--- a/src/Symfony/Component/Security/Core/Authentication/RememberMe/InMemoryTokenProvider.php
+++ b/src/Symfony/Component/Security/Core/Authentication/RememberMe/InMemoryTokenProvider.php
@@ -20,7 +20,7 @@
  */
 class InMemoryTokenProvider implements TokenProviderInterface
 {
-    private $tokens = array();
+    private $tokens = [];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
index 516a61fe0dcb..536756ff9a6a 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
@@ -26,16 +26,16 @@
 abstract class AbstractToken implements TokenInterface
 {
     private $user;
-    private $roles = array();
+    private $roles = [];
     private $authenticated = false;
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @param (RoleInterface|string)[] $roles An array of roles
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct(array $roles = array())
+    public function __construct(array $roles = [])
     {
         foreach ($roles as $role) {
             if (\is_string($role)) {
@@ -138,12 +138,12 @@ public function eraseCredentials()
     public function serialize()
     {
         return serialize(
-            array(
+            [
                 \is_object($this->user) ? clone $this->user : $this->user,
                 $this->authenticated,
                 array_map(function ($role) { return clone $role; }, $this->roles),
                 $this->attributes,
-            )
+            ]
         );
     }
 
@@ -224,7 +224,7 @@ public function __toString()
         $class = \get_class($this);
         $class = substr($class, strrpos($class, '\\') + 1);
 
-        $roles = array();
+        $roles = [];
         foreach ($this->roles as $role) {
             $roles[] = $role->getRole();
         }
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
index 3c93664efcc7..c3af5a3d2290 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
@@ -27,7 +27,7 @@ class AnonymousToken extends AbstractToken
      * @param string|object $user   The user can be a UserInterface instance, or an object implementing a __toString method or the username as a regular string
      * @param Role[]        $roles  An array of roles
      */
-    public function __construct($secret, $user, array $roles = array())
+    public function __construct($secret, $user, array $roles = [])
     {
         parent::__construct($roles);
 
@@ -59,7 +59,7 @@ public function getSecret()
      */
     public function serialize()
     {
-        return serialize(array($this->secret, parent::serialize()));
+        return serialize([$this->secret, parent::serialize()]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
index 84fdb4b00c08..d49ba54ece5c 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
@@ -29,7 +29,7 @@ class PreAuthenticatedToken extends AbstractToken
      * @param string                   $providerKey The provider key
      * @param (RoleInterface|string)[] $roles       An array of roles
      */
-    public function __construct($user, $credentials, $providerKey, array $roles = array())
+    public function __construct($user, $credentials, $providerKey, array $roles = [])
     {
         parent::__construct($roles);
 
@@ -79,7 +79,7 @@ public function eraseCredentials()
      */
     public function serialize()
     {
-        return serialize(array($this->credentials, $this->providerKey, parent::serialize()));
+        return serialize([$this->credentials, $this->providerKey, parent::serialize()]);
     }
741A

 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
index 4130a437da4c..9512a50eb7ce 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
@@ -94,11 +94,11 @@ public function getCredentials()
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             $this->secret,
             $this->providerKey,
             parent::serialize(),
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
index 2df1472d8c2a..9445f279a32a 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
@@ -31,7 +31,7 @@ class UsernamePasswordToken extends AbstractToken
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct($user, $credentials, $providerKey, array $roles = array())
+    public function __construct($user, $credentials, $providerKey, array $roles = [])
     {
         parent::__construct($roles);
 
@@ -91,7 +91,7 @@ public function eraseCredentials()
      */
     public function serialize()
     {
-        return serialize(array($this->credentials, $this->providerKey, parent::serialize()));
+        return serialize([$this->credentials, $this->providerKey, parent::serialize()]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php b/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
index 3ead6dfe236b..39cca72b7b9b 100644
--- a/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
+++ b/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
@@ -40,10 +40,10 @@ class AccessDecisionManager implements AccessDecisionManagerInterface
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct($voters = array(), $strategy = self::STRATEGY_AFFIRMATIVE, $allowIfAllAbstainDecisions = false, $allowIfEqualGrantedDeniedDecisions = true)
+    public function __construct($voters = [], $strategy = self::STRATEGY_AFFIRMATIVE, $allowIfAllAbstainDecisions = false, $allowIfEqualGrantedDeniedDecisions = true)
     {
         $strategyMethod = 'decide'.ucfirst($strategy);
-        if (!\is_callable(array($this, $strategyMethod))) {
+        if (!\is_callable([$this, $strategyMethod])) {
             throw new \InvalidArgumentException(sprintf('The strategy "%s" is not supported.', $strategy));
         }
 
@@ -167,7 +167,7 @@ private function decideUnanimous(TokenInterface $token, array $attributes, $obje
         $grant = 0;
         foreach ($this->voters as $voter) {
             foreach ($attributes as $attribute) {
-                $result = $this->vote($voter, $token, $object, array($attribute));
+                $result = $this->vote($voter, $token, $object, [$attribute]);
 
                 switch ($result) {
                     case VoterInterface::ACCESS_GRANTED:
diff --git a/src/Symfony/Component/Security/Core/Authorization/AuthorizationChecker.php b/src/Symfony/Component/Security/Core/Authorization/AuthorizationChecker.php
index ff37531cda54..31744d341356 100644
--- a/src/Symfony/Component/Security/Core/Authorization/AuthorizationChecker.php
+++ b/src/Symfony/Component/Security/Core/Authorization/AuthorizationChecker.php
@@ -60,7 +60,7 @@ final public function isGranted($attributes, $subject = null)
         }
 
         if (!\is_array($attributes)) {
-            $attributes = array($attributes);
+            $attributes = [$attributes];
         }
 
         return $this->accessDecisionManager->decide($token, $attributes, $subject);
diff --git a/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php b/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
index 0778ba78d486..950d082a4ae8 100644
--- a/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
+++ b/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
@@ -28,7 +28,7 @@ class ExpressionLanguage extends BaseExpressionLanguage
         /**
          * {@inheritdoc}
          */
-        public function __construct($cache = null, array $providers = array())
+        public function __construct($cache = null, array $providers = [])
         {
             // prepend the default provider to let users override it easily
             array_unshift($providers, new ExpressionLanguageProvider());
diff --git a/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguageProvider.php b/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguageProvider.php
index 388040d5facb..d8707525ebc2 100644
--- a/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguageProvider.php
+++ b/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguageProvider.php
@@ -23,7 +23,7 @@ class ExpressionLanguageProvider implements ExpressionFunctionProviderInterface
 {
     public function getFunctions()
     {
-        return array(
+        return [
             new ExpressionFunction('is_anonymous', function () {
                 return '$trust_resolver->isAnonymous($token)';
             }, function (array $variables) {
@@ -53,6 +53,6 @@ public function getFunctions()
             }, function (array $variables, $role) {
                 return \in_array($role, $variables['roles']);
             }),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php b/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
index dc77ab2df687..81cdfd766aba 100644
--- a/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
+++ b/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
@@ -26,8 +26,8 @@ class TraceableAccessDecisionManager implements AccessDecisionManagerInterface
 {
     private $manager;
     private $strategy;
-    private $voters = array();
-    private $decisionLog = array();
+    private $voters = [];
+    private $decisionLog = [];
 
     public function __construct(AccessDecisionManagerInterface $manager)
     {
@@ -51,11 +51,11 @@ public function decide(TokenInterface $token, array $attributes, $object = null)
     {
         $result = $this->manager->decide($token, $attributes, $object);
 
-        $this->decisionLog[] = array(
+        $this->decisionLog[] = [
             'attributes' => $attributes,
             'object' => $object,
             'result' => $result,
-        );
+        ];
 
         return $result;
     }
diff --git a/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php b/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php
index 40f1196f0293..42b936785dda 100644
--- a/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php
+++ b/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php
@@ -75,14 +75,14 @@ private function getVariables(TokenInterface $token, $subject)
             $roles = $token->getRoles();
         }
 
-        $variables = array(
+        $variables = [
             'token' => $token,
             'user' => $token->getUser(),
             'object' => $subject,
             'subject' => $subject,
             'roles' => array_map(function ($role) { return $role->getRole(); }, $roles),
             'trust_resolver' => $this->trustResolver,
-        );
+        ];
 
         // this is mainly to propose a better experience when the expression is used
         // in an access control rule, as the developer does not know that it's going
diff --git a/src/Symfony/Component/Security/Core/Encoder/BCryptPasswordEncoder.php b/src/Symfony/Component/Security/Core/Encoder/BCryptPasswordEncoder.php
index d85afccd805b..1a7be2b4d22a 100644
--- a/src/Symfony/Component/Security/Core/Encoder/BCryptPasswordEncoder.php
+++ b/src/Symfony/Component/Security/Core/Encoder/BCryptPasswordEncoder.php
@@ -65,7 +65,7 @@ public function encodePassword($raw, $salt)
             throw new BadCredentialsException('Invalid password.');
         }
 
-        $options = array('cost' => $this->cost);
+        $options = ['cost' => $this->cost];
 
         if ($salt) {
             // Ignore $salt, the auto-generated one is always the best
diff --git a/src/Symfony/Component/Security/Core/Encoder/BasePasswordEncoder.php b/src/Symfony/Component/Security/Core/Encoder/BasePasswordEncoder.php
index 75c4db896f2d..3c3ea1aa1736 100644
--- a/src/Symfony/Component/Security/Core/Encoder/BasePasswordEncoder.php
+++ b/src/Symfony/Component/Security/Core/Encoder/BasePasswordEncoder.php
@@ -30,7 +30,7 @@ abstract class BasePasswordEncoder implements PasswordEncoderInterface
     protected function demergePasswordAndSalt($mergedPasswordSalt)
     {
         if (empty($mergedPasswordSalt)) {
-            return array('', '');
+            return ['', ''];
         }
 
         $password = $mergedPasswordSalt;
@@ -42,7 +42,7 @@ protected function demergePasswordAndSalt($mergedPasswordSalt)
             $password = substr($mergedPasswordSalt, 0, $saltBegins);
         }
 
-        return array($password, $salt);
+        return [$password, $salt];
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Encoder/EncoderFactory.php b/src/Symfony/Component/Security/Core/Encoder/EncoderFactory.php
index 2c5fd4773e95..75ccb4d77867 100644
--- a/src/Symfony/Component/Security/Core/Encoder/EncoderFactory.php
+++ b/src/Symfony/Component/Security/Core/Encoder/EncoderFactory.php
@@ -86,42 +86,42 @@ private function getEncoderConfigFromAlgorithm($config)
     {
         switch ($config['algorithm']) {
             case 'plaintext':
-                return array(
+                return [
                     'class' => PlaintextPasswordEncoder::class,
-                    'arguments' => array($config['ignore_case']),
-                );
+                    'arguments' => [$config['ignore_case']],
+                ];
 
             case 'pbkdf2':
-                return array(
+                return [
                     'class' => Pbkdf2PasswordEncoder::class,
-                    'arguments' => array(
+                    'arguments' => [
                         $config['hash_algorithm'],
                         $config['encode_as_base64'],
                         $config['iterations'],
                         $config['key_length'],
-                    ),
-                );
+                    ],
+                ];
 
             case 'bcrypt':
-                return array(
+                return [
                     'class' => BCryptPasswordEncoder::class,
-                    'arguments' => array($config['cost']),
-                );
+                    'arguments' => [$config['cost']],
+                ];
 
             case 'argon2i':
-                return array(
+                return [
                     'class' => Argon2iPasswordEncoder::class,
-                    'arguments' => array(),
-                );
+                    'arguments' => [],
+                ];
         }
 
-        return array(
+        return [
             'class' => MessageDigestPasswordEncoder::class,
-            'arguments' => array(
+            'arguments' => [
                 $config['algorithm'],
                 $config['encode_as_base64'],
                 $config['iterations'],
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Exception/AccessDeniedException.php b/src/Symfony/Component/Security/Core/Exception/AccessDeniedException.php
index a16044ff000a..bafcacbedc60 100644
--- a/src/Symfony/Component/Security/Core/Exception/AccessDeniedException.php
+++ b/src/Symfony/Component/Security/Core/Exception/AccessDeniedException.php
@@ -18,7 +18,7 @@
  */
 class AccessDeniedException extends \RuntimeException
 {
-    private $attributes = array();
+    private $attributes = [];
     private $subject;
 
     public function __construct($message = 'Access Denied.', \Exception $previous = null)
diff --git a/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php b/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
index 034ab792ee36..503d3fbad48a 100644
--- a/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
+++ b/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
@@ -44,10 +44,10 @@ public function setUser(UserInterface $user)
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             $this->user,
             parent::serialize(),
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Exception/AuthenticationException.php b/src/Symfony/Component/Security/Core/Exception/AuthenticationException.php
index 8beb87bdb81b..e0d1e471e8f9 100644
--- a/src/Symfony/Component/Security/Core/Exception/AuthenticationException.php
+++ b/src/Symfony/Component/Security/Core/Exception/AuthenticationException.php
@@ -40,13 +40,13 @@ public function setToken(TokenInterface $token)
 
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             $this->token,
             $this->code,
             $this->message,
             $this->file,
             $this->line,
-        ));
+        ]);
     }
 
     public function unserialize($str)
@@ -77,6 +77,6 @@ public function getMessageKey()
      */
     public function getMessageData()
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
index 9f5071f4307d..01a2ccf79997 100644
--- a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
+++ b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
@@ -24,9 +24,9 @@ class CustomUserMessageAuthenticationException extends AuthenticationException
 {
     private $messageKey;
 
-    private $messageData = array();
+    private $messageData = [];
 
-    public function __construct($message = '', array $messageData = array(), $code = 0, \Exception $previous = null)
+    public function __construct($message = '', array $messageData = [], $code = 0, \Exception $previous = null)
     {
         parent::__construct($message, $code, $previous);
 
@@ -39,7 +39,7 @@ public function __construct($message = '', array $messageData = array(), $code =
      * @param string $messageKey  The message or message key
      * @param array  $messageData Data to be passed into the translator
      */
-    public function setSafeMessage($messageKey, array $messageData = array())
+    public function setSafeMessage($messageKey, array $messageData = [])
     {
         $this->messageKey = $messageKey;
         $this->messageData = $messageData;
@@ -60,11 +60,11 @@ public function getMessageData()
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             parent::serialize(),
             $this->messageKey,
             $this->messageData,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php b/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
index 6979389a0598..6549307eee19 100644
--- a/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
+++ b/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
@@ -54,10 +54,10 @@ public function setUsername($username)
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             $this->username,
             parent::serialize(),
-        ));
+        ]);
     }
 
     /**
@@ -75,6 +75,6 @@ public function unserialize($str)
      */
     public function getMessageData()
     {
-        return array('{{ username }}' => $this->username);
+        return ['{{ username }}' => $this->username];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Role/RoleHierarchy.php b/src/Symfony/Component/Security/Core/Role/RoleHierarchy.php
index ff487f2523ec..f4a2e5b62297 100644
--- a/src/Symfony/Component/Security/Core/Role/RoleHierarchy.php
+++ b/src/Symfony/Component/Security/Core/Role/RoleHierarchy.php
@@ -52,10 +52,10 @@ public function getReachableRoles(array $roles)
 
     protected function buildRoleMap()
     {
-        $this->map = array();
+        $this->map = [];
         foreach ($this->hierarchy as $main => $roles) {
             $this->map[$main] = $roles;
-            $visited = array();
+            $visited = [];
             $additionalRoles = $roles;
             while ($role = array_shift($additionalRoles)) {
                 if (!isset($this->hierarchy[$role])) {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationProviderManagerTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationProviderManagerTest.php
index 0f82d3ce347f..fd2de0ca25d4 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationProviderManagerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationProviderManagerTest.php
@@ -29,7 +29,7 @@ class AuthenticationProviderManagerTest extends TestCase
      */
     public function testAuthenticateWithoutProviders()
     {
-        new AuthenticationProviderManager(array());
+        new AuthenticationProviderManager([]);
     }
 
     /**
@@ -37,16 +37,16 @@ public function testAuthenticateWithoutProviders()
      */
     public function testAuthenticateWithProvidersWithIncorrectInterface()
     {
-        (new AuthenticationProviderManager(array(
+        (new AuthenticationProviderManager([
             new \stdClass(),
-        )))->authenticate($this->getMockBuilder(TokenInterface::class)->getMock());
+        ]))->authenticate($this->getMockBuilder(TokenInterface::class)->getMock());
     }
 
     public function testAuthenticateWhenNoProviderSupportsToken()
     {
-        $manager = new AuthenticationProviderManager(array(
+        $manager = new AuthenticationProviderManager([
             $this->getAuthenticationProvider(false),
-        ));
+        ]);
 
         try {
             $manager->authenticate($token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock());
@@ -58,9 +58,9 @@ public function testAuthenticateWhenNoProviderSupportsToken()
 
     public function testAuthenticateWhenProviderReturnsAccountStatusException()
     {
-        $manager = new AuthenticationProviderManager(array(
+        $manager = new AuthenticationProviderManager([
             $this->getAuthenticationProvider(true, null, 'Symfony\Component\Security\Core\Exception\AccountStatusException'),
-        ));
+        ]);
 
         try {
             $manager->authenticate($token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock());
@@ -72,9 +72,9 @@ public function testAuthenticateWhenProviderReturnsAccountStatusException()
 
     public function testAuthenticateWhenProviderReturnsAuthenticationException()
     {
-        $manager = new AuthenticationProviderManager(array(
+        $manager = new AuthenticationProviderManager([
             $this->getAuthenticationProvider(true, null, 'Symfony\Component\Security\Core\Exception\AuthenticationException'),
-        ));
+        ]);
 
         try {
             $manager->authenticate($token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock());
@@ -86,10 +86,10 @@ public function testAuthenticateWhenProviderReturnsAuthenticationException()
 
     public function testAuthenticateWhenOneReturnsAuthenticationExceptionButNotAll()
     {
-        $manager = new AuthenticationProviderManager(array(
+        $manager = new AuthenticationProviderManager([
             $this->getAuthenticationProvider(true, null, 'Symfony\Component\Security\Core\Exception\AuthenticationException'),
             $this->getAuthenticationProvider(true, $expected = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock()),
-        ));
+        ]);
 
         $token = $manager->authenticate($this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock());
         $this->assertSame($expected, $token);
@@ -102,10 +102,10 @@ public function testAuthenticateReturnsTokenOfTheFirstMatchingProvider()
             ->expects($this->never())
             ->method('supports')
         ;
-        $manager = new AuthenticationProviderManager(array(
+        $manager = new AuthenticationProviderManager([
             $this->getAuthenticationProvider(true, $expected = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock()),
             $second,
-        ));
+        ]);
 
         $token = $manager->authenticate($this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock());
         $this->assertSame($expected, $token);
@@ -113,16 +113,16 @@ public function testAuthenticateReturnsTokenOfTheFirstMatchingProvider()
 
     public function testEraseCredentialFlag()
     {
-        $manager = new AuthenticationProviderManager(array(
+        $manager = new AuthenticationProviderManager([
             $this->getAuthenticationProvider(true, $token = new UsernamePasswordToken('foo', 'bar', 'key')),
-        ));
+        ]);
 
         $token = $manager->authenticate($this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock());
         $this->assertEquals('', $token->getCredentials());
 
-        $manager = new AuthenticationProviderManager(array(
+        $manager = new AuthenticationProviderManager([
             $this->getAuthenticationProvider(true, $token = new UsernamePasswordToken('foo', 'bar', 'key')),
-        ), false);
+        ], false);
 
         $token = $manager->authenticate($this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock());
         $this->assertEquals('bar', $token->getCredentials());
@@ -141,7 +141,7 @@ public function testAuthenticateDispatchesAuthenticationFailureEvent()
             ->method('dispatch')
             ->with(AuthenticationEvents::AUTHENTICATION_FAILURE, $this->equalTo(new AuthenticationFailureEvent($token, $exception)));
 
-        $manager = new AuthenticationProviderManager(array($provider));
+        $manager = new AuthenticationProviderManager([$provider]);
         $manager->setEventDispatcher($dispatcher);
 
         try {
@@ -166,7 +166,7 @@ public function testAuthenticateDispatchesAuthenticationSuccessEvent()
             ->method('dispatch')
             ->with(AuthenticationEvents::AUTHENTICATION_SUCCESS, $this->equalTo(new AuthenticationEvent($token)));
 
-        $manager = new AuthenticationProviderManager(array($provider));
+        $manager = new AuthenticationProviderManager([$provider]);
         $manager->setEventDispatcher($dispatcher);
 
         $this->assertSame($token, $manager->authenticate($token));
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationTrustResolverTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationTrustResolverTest.php
index 55ca05b43b5f..1ae0d42fb9d1 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationTrustResolverTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/AuthenticationTrustResolverTest.php
@@ -53,12 +53,12 @@ protected function getToken()
 
     protected function getAnonymousToken()
     {
-        return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\AnonymousToken')->setConstructorArgs(array('', ''))->getMock();
+        return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\AnonymousToken')->setConstructorArgs(['', ''])->getMock();
     }
 
     protected function getRememberMeToken()
     {
-        return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\RememberMeToken')->setMethods(array('setPersistent'))->disableOriginalConstructor()->getMock();
+        return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\RememberMeToken')->setMethods(['setPersistent'])->disableOriginalConstructor()->getMock();
     }
 
     protected function getResolver()
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/AnonymousAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/AnonymousAuthenticationProviderTest.php
index e6c0f6853a7c..92441ba5fc61 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/AnonymousAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/AnonymousAuthenticationProviderTest.php
@@ -55,7 +55,7 @@ public function testAuthenticate()
 
     protected function getSupportedToken($secret)
     {
-        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\AnonymousToken')->setMethods(array('getSecret'))->disableOriginalConstructor()->getMock();
+        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\AnonymousToken')->setMethods(['getSecret'])->disableOriginalConstructor()->getMock();
         $token->expects($this->any())
               ->method('getSecret')
               ->will($this->returnValue($secret))
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/DaoAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/DaoAuthenticationProviderTest.php
index b65792534340..55814a994c57 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/DaoAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/DaoAuthenticationProviderTest.php
@@ -261,7 +261,7 @@ public function testCheckAuthentication()
 
     protected function getSupportedToken()
     {
-        $mock = $this->getMockBuilder('Symfony\\Component\\Security\\Core\\Authentication\\Token\\UsernamePasswordToken')->setMethods(array('getCredentials', 'getUser', 'getProviderKey'))->disableOriginalConstructor()->getMock();
+        $mock = $this->getMockBuilder('Symfony\\Component\\Security\\Core\\Authentication\\Token\\UsernamePasswordToken')->setMethods(['getCredentials', 'getUser', 'getProviderKey'])->disableOriginalConstructor()->getMock();
         $mock
             ->expects($this->any())
             ->method('getProviderKey')
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/LdapBindAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/LdapBindAuthenticationProviderTest.php
index 7897a5bf0a56..ef19bc2c3273 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/LdapBindAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/LdapBindAuthenticationProviderTest.php
@@ -107,7 +107,7 @@ public function testQueryForDn()
     {
         $userProvider = $this->getMockBuilder(UserProviderInterface::class)->getMock();
 
-        $collection = new \ArrayIterator(array(new Entry('')));
+        $collection = new \ArrayIterator([new Entry('')]);
 
         $query = $this->getMockBuilder(QueryInterface::class)->getMock();
         $query
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/PreAuthenticatedAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/PreAuthenticatedAuthenticationProviderTest.php
index 8f19a8d18e0f..a101208d681c 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/PreAuthenticatedAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/PreAuthenticatedAuthenticationProviderTest.php
@@ -62,7 +62,7 @@ public function testAuthenticate()
         $user
             ->expects($this->once())
             ->method('getRoles')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
         $provider = $this->getProvider($user);
 
@@ -70,8 +70,8 @@ public function testAuthenticate()
         $this->assertInstanceOf('Symfony\Component\Security\Core\Authentication\Token\PreAuthenticatedToken', $token);
         $this->assertEquals('pass', $token->getCredentials());
         $this->assertEquals('key', $token->getProviderKey());
-        $this->assertEquals(array(), $token->getRoles());
-        $this->assertEquals(array('foo' => 'bar'), $token->getAttributes(), '->authenticate() copies token attributes');
+        $this->assertEquals([], $token->getRoles());
+        $this->assertE
F438
quals(['foo' => 'bar'], $token->getAttributes(), '->authenticate() copies token attributes');
         $this->assertSame($user, $token->getUser());
     }
 
@@ -95,7 +95,7 @@ public function testAuthenticateWhenUserCheckerThrowsException()
 
     protected function getSupportedToken($user = false, $credentials = false)
     {
-        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\PreAuthenticatedToken')->setMethods(array('getUser', 'getCredentials', 'getProviderKey'))->disableOriginalConstructor()->getMock();
+        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\PreAuthenticatedToken')->setMethods(['getUser', 'getCredentials', 'getProviderKey'])->disableOriginalConstructor()->getMock();
         if (false !== $user) {
             $token->expects($this->once())
                   ->method('getUser')
@@ -115,7 +115,7 @@ protected function getSupportedToken($user = false, $credentials = false)
             ->will($this->returnValue('key'))
         ;
 
-        $token->setAttributes(array('foo' => 'bar'));
+        $token->setAttributes(['foo' => 'bar']);
 
         return $token;
     }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/RememberMeAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/RememberMeAuthenticationProviderTest.php
index 1b98a7d9d948..26287693d6b0 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/RememberMeAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/RememberMeAuthenticationProviderTest.php
@@ -69,7 +69,7 @@ public function testAuthenticate()
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $user->expects($this->exactly(2))
              ->method('getRoles')
-             ->will($this->returnValue(array('ROLE_FOO')));
+             ->will($this->returnValue(['ROLE_FOO']));
 
         $provider = $this->getProvider();
 
@@ -78,7 +78,7 @@ public function testAuthenticate()
 
         $this->assertInstanceOf('Symfony\Component\Security\Core\Authentication\Token\RememberMeToken', $authToken);
         $this->assertSame($user, $authToken->getUser());
-        $this->assertEquals(array(new Role('ROLE_FOO')), $authToken->getRoles());
+        $this->assertEquals([new Role('ROLE_FOO')], $authToken->getRoles());
         $this->assertEquals('', $authToken->getCredentials());
     }
 
@@ -89,10 +89,10 @@ protected function getSupportedToken($user = null, $secret = 'test')
             $user
                 ->expects($this->any())
                 ->method('getRoles')
-                ->will($this->returnValue(array()));
+                ->will($this->returnValue([]));
         }
 
-        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\RememberMeToken')->setMethods(array('getProviderKey'))->setConstructorArgs(array($user, 'foo', $secret))->getMock();
+        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\RememberMeToken')->setMethods(['getProviderKey'])->setConstructorArgs([$user, 'foo', $secret])->getMock();
         $token
             ->expects($this->once())
             ->method('getProviderKey')
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/UserAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/UserAuthenticationProviderTest.php
index e861a2009487..7c306d2f1f0f 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/UserAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/UserAuthenticationProviderTest.php
@@ -165,7 +165,7 @@ public function testAuthenticate()
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $user->expects($this->once())
              ->method('getRoles')
-             ->will($this->returnValue(array('ROLE_FOO')))
+             ->will($this->returnValue(['ROLE_FOO']))
         ;
 
         $provider = $this->getProvider();
@@ -182,16 +182,16 @@ public function testAuthenticate()
 
         $token->expects($this->once())
               ->method('getRoles')
-              ->will($this->returnValue(array()))
+              ->will($this->returnValue([]))
         ;
 
         $authToken = $provider->authenticate($token);
 
         $this->assertInstanceOf('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken', $authToken);
         $this->assertSame($user, $authToken->getUser());
-        $this->assertEquals(array(new Role('ROLE_FOO')), $authToken->getRoles());
+        $this->assertEquals([new Role('ROLE_FOO')], $authToken->getRoles());
         $this->assertEquals('foo', $authToken->getCredentials());
-        $this->assertEquals(array('foo' => 'bar'), $authToken->getAttributes(), '->authenticate() copies token attributes');
+        $this->assertEquals(['foo' => 'bar'], $authToken->getAttributes(), '->authenticate() copies token attributes');
     }
 
     public function testAuthenticateWithPreservingRoleSwitchUserRole()
@@ -199,7 +199,7 @@ public function testAuthenticateWithPreservingRoleSwitchUserRole()
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $user->expects($this->once())
              ->method('getRoles')
-             ->will($this->returnValue(array('ROLE_FOO')))
+             ->will($this->returnValue(['ROLE_FOO']))
         ;
 
         $provider = $this->getProvider();
@@ -217,7 +217,7 @@ public function testAuthenticateWithPreservingRoleSwitchUserRole()
         $switchUserRole = new SwitchUserRole('foo', $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock());
         $token->expects($this->once())
               ->method('getRoles')
-              ->will($this->returnValue(array($switchUserRole)))
+              ->will($this->returnValue([$switchUserRole]))
         ;
 
         $authToken = $provider->authenticate($token);
@@ -227,19 +227,19 @@ public function testAuthenticateWithPreservingRoleSwitchUserRole()
         $this->assertContains(new Role('ROLE_FOO'), $authToken->getRoles(), '', false, false);
         $this->assertContains($switchUserRole, $authToken->getRoles(), '', false, false);
         $this->assertEquals('foo', $authToken->getCredentials());
-        $this->assertEquals(array('foo' => 'bar'), $authToken->getAttributes(), '->authenticate() copies token attributes');
+        $this->assertEquals(['foo' => 'bar'], $authToken->getAttributes(), '->authenticate() copies token attributes');
     }
 
     protected function getSupportedToken()
     {
-        $mock = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken')->setMethods(array('getCredentials', 'getProviderKey', 'getRoles'))->disableOriginalConstructor()->getMock();
+        $mock = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken')->setMethods(['getCredentials', 'getProviderKey', 'getRoles'])->disableOriginalConstructor()->getMock();
         $mock
             ->expects($this->any())
             ->method('getProviderKey')
             ->will($this->returnValue('key'))
         ;
 
-        $mock->setAttributes(array('foo' => 'bar'));
+        $mock->setAttributes(['foo' => 'bar']);
 
         return $mock;
     }
@@ -250,6 +250,6 @@ protected function getProvider($userChecker = false, $hide = true)
             $userChecker = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserCheckerInterface')->getMock();
         }
 
-        return $this->getMockForAbstractClass('Symfony\Component\Security\Core\Authentication\Provider\UserAuthenticationProvider', array($userChecker, 'key', $hide));
+        return $this->getMockForAbstractClass('Symfony\Component\Security\Core\Authentication\Provider\UserAuthenticationProvider', [$userChecker, 'key', $hide]);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
index 4cdf98267600..783519469792 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
@@ -36,7 +36,7 @@ class ConcreteToken extends AbstractToken
 {
     private $credentials = 'credentials_value';
 
-    public function __construct($user, array $roles = array())
+    public function __construct($user, array $roles = [])
     {
         parent::__construct($roles);
 
@@ -45,7 +45,7 @@ public function __construct($user, array $roles = array())
 
     public function serialize()
     {
-        return serialize(array($this->credentials, parent::serialize()));
+        return serialize([$this->credentials, parent::serialize()]);
     }
 
     public function unserialize($serialized)
@@ -64,7 +64,7 @@ class AbstractTokenTest extends TestCase
 {
     public function testGetUsername()
     {
-        $token = $this->getToken(array('ROLE_FOO'));
+        $token = $this->getToken(['ROLE_FOO']);
         $token->setUser('fabien');
         $this->assertEquals('fabien', $token->getUsername());
 
@@ -79,7 +79,7 @@ public function testGetUsername()
 
     public function testEraseCredentials()
     {
-        $token = $this->getToken(array('ROLE_FOO'));
+        $token = $this->getToken(['ROLE_FOO']);
 
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $user->expects($this->once())->method('eraseCredentials');
@@ -90,8 +90,8 @@ public function testEraseCredentials()
 
     public function testSerialize()
     {
-        $token = $this->getToken(array('ROLE_FOO', new Role('ROLE_BAR')));
-        $token->setAttributes(array('foo' => 'bar'));
+        $token = $this->getToken(['ROLE_FOO', new Role('ROLE_BAR')]);
+        $token->setAttributes(['foo' => 'bar']);
 
         $uToken = unserialize(serialize($token));
 
@@ -101,7 +101,7 @@ public function testSerialize()
 
     public function testSerializeWithRoleObjects()
     {
-        $user = new User('name', 'password', array(new Role('ROLE_FOO'), new Role('ROLE_BAR')));
+        $user = new User('name', 'password', [new Role('ROLE_FOO'), new Role('ROLE_BAR')]);
         $token = new ConcreteToken($user, $user->getRoles());
 
         $serialized = serialize($token);
@@ -115,9 +115,9 @@ public function testSerializeWithRoleObjects()
     public function testSerializeParent()
     {
         $user = new TestUser('fabien');
-        $token = new ConcreteToken($user, array('ROLE_FOO'));
+        $token = new ConcreteToken($user, ['ROLE_FOO']);
 
-        $parentToken = new ConcreteToken($user, array(new SwitchUserRole('ROLE_PREVIOUS', $token)));
+        $parentToken = new ConcreteToken($user, [new SwitchUserRole('ROLE_PREVIOUS', $token)]);
         $uToken = unserialize(serialize($parentToken));
 
         $this->assertEquals(
@@ -128,14 +128,14 @@ public function testSerializeParent()
 
     public function testConstructor()
     {
-        $token = $this->getToken(array('ROLE_FOO'));
-        $this->assertEquals(array(new Role('ROLE_FOO')), $token->getRoles());
+        $token = $this->getToken(['ROLE_FOO']);
+        $this->assertEquals([new Role('ROLE_FOO')], $token->getRoles());
 
-        $token = $this->getToken(array(new Role('ROLE_FOO')));
-        $this->assertEquals(array(new Role('ROLE_FOO')), $token->getRoles());
+        $token = $this->getToken([new Role('ROLE_FOO')]);
+        $this->assertEquals([new Role('ROLE_FOO')], $token->getRoles());
 
-        $token = $this->getToken(array(new Role('ROLE_FOO'), 'ROLE_BAR'));
-        $this->assertEquals(array(new Role('ROLE_FOO'), new Role('ROLE_BAR')), $token->getRoles());
+        $token = $this->getToken([new Role('ROLE_FOO'), 'ROLE_BAR']);
+        $this->assertEquals([new Role('ROLE_FOO'), new Role('ROLE_BAR')], $token->getRoles());
     }
 
     public function testAuthenticatedFlag()
@@ -152,7 +152,7 @@ public function testAuthenticatedFlag()
 
     public function testAttributes()
     {
-        $attributes = array('foo' => 'bar');
+        $attributes = ['foo' => 'bar'];
         $token = $this->getToken();
         $token->setAttributes($attributes);
 
@@ -187,12 +187,12 @@ public function getUsers()
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $advancedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\AdvancedUserInterface')->getMock();
 
-        return array(
-            array($advancedUser),
-            array($user),
-            array(new TestUser('foo')),
-            array('foo'),
-        );
+        return [
+            [$advancedUser],
+            [$user],
+            [new TestUser('foo')],
+            ['foo'],
+        ];
     }
 
     /**
@@ -216,50 +216,50 @@ public function getUserChanges()
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $advancedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\AdvancedUserInterface')->getMock();
 
-        return array(
-            array(
+        return [
+            [
                 'foo', 'bar',
-            ),
-            array(
+            ],
+            [
                 'foo', new TestUser('bar'),
-            ),
-            array(
+            ],
+            [
                 'foo', $user,
-            ),
-            array(
+            ],
+            [
                 'foo', $advancedUser,
-            ),
-            array(
+            ],
+            [
                 $user, 'foo',
-            ),
-            array(
+            ],
+            [
                 $advancedUser, 'foo',
-            ),
-            array(
+            ],
+            [
                 $user, new TestUser('foo'),
-            ),
-            array(
+            ],
+            [
                 $advancedUser, new TestUser('foo'),
-            ),
-            array(
+            ],
+            [
                 new TestUser('foo'), new TestUser('bar'),
-            ),
-            array(
+            ],
+            [
                 new TestUser('foo'), 'bar',
-            ),
-            array(
+            ],
+            [
                 new TestUser('foo'), $user,
-            ),
-            array(
+            ],
+            [
                 new TestUser('foo'), $advancedUser,
-            ),
-            array(
+            ],
+            [
                 $user, $advancedUser,
-            ),
-            array(
+            ],
+            [
                 $advancedUser, $user,
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -278,8 +278,8 @@ public function testSetUserDoesNotSetAuthenticatedToFalseWhenUserDoesNotChange($
         $this->assertTrue($token->isAuthenticated());
     }
 
-    protected function getToken(array $roles = array())
+    protected function getToken(array $roles = [])
     {
-        return $this->getMockForAbstractClass('Symfony\Component\Security\Core\Authentication\Token\AbstractToken', array($roles));
+        return $this->getMockForAbstractClass('Symfony\Component\Security\Core\Authentication\Token\AbstractToken', [$roles]);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AnonymousTokenTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AnonymousTokenTest.php
index 1409752ac645..7024cc5356cd 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AnonymousTokenTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AnonymousTokenTest.php
@@ -22,8 +22,8 @@ public function testConstructor()
         $token = new AnonymousToken('foo', 'bar');
         $this->assertTrue($token->isAuthenticated());
 
-        $token = new AnonymousToken('foo', 'bar', array('ROLE_FOO'));
-        $this->assertEquals(array(new Role('ROLE_FOO')), $token->getRoles());
+        $token = new AnonymousToken('foo', 'bar', ['ROLE_FOO']);
+        $this->assertEquals([new Role('ROLE_FOO')], $token->getRoles());
     }
 
     public function testGetKey()
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/PreAuthenticatedTokenTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/PreAuthenticatedTokenTest.php
index 5b2b1c07e664..7e64aa1a5d4e 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/PreAuthenticatedTokenTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/PreAuthenticatedTokenTest.php
@@ -22,9 +22,9 @@ public function testConstructor()
         $token = new PreAuthenticatedToken('foo', 'bar', 'key');
         $this->assertFalse($token->isAuthenticated());
 
-        $token = new PreAuthenticatedToken('foo', 'bar', 'key', array('ROLE_FOO'));
+        $token = new PreAuthenticatedToken('foo', 'bar', 'key', ['ROLE_FOO']);
         $this->assertTrue($token->isAuthenticated());
-        $this->assertEquals(array(new Role('ROLE_FOO')), $token->getRoles());
+        $this->assertEquals([new Role('ROLE_FOO')], $token->getRoles());
         $this->assertEquals('key', $token->getProviderKey());
     }
 
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/RememberMeTokenTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/RememberMeTokenTest.php
index 1b233cd9daa4..0bdd54dc308b 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/RememberMeTokenTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/RememberMeTokenTest.php
@@ -24,7 +24,7 @@ public function testConstructor()
 
         $this->assertEquals('fookey', $token->getProviderKey());
         $this->assertEquals('foo', $token->getSecret());
-        $this->assertEquals(array(new Role('ROLE_FOO')), $token->getRoles());
+        $this->assertEquals([new Role('ROLE_FOO')], $token->getRoles());
         $this->assertSame($user, $token->getUser());
         $this->assertTrue($token->isAuthenticated());
     }
@@ -53,7 +53,7 @@ public function testConstructorSecretCannotBeEmptyString()
         );
     }
 
-    protected function getUser($roles = array('ROLE_FOO'))
+    protected function getUser($roles = ['ROLE_FOO'])
     {
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $user
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/UsernamePasswordTokenTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/UsernamePasswordTokenTest.php
index 12897ab1d114..87dceea3d842 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/UsernamePasswordTokenTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/UsernamePasswordTokenTest.php
@@ -22,8 +22,8 @@ public function testConstructor()
         $token = new UsernamePasswordToken('foo', 'bar', 'key');
         $this->assertFalse($token->isAuthenticated());
 
-        $token = new UsernamePasswordToken('foo', 'bar', 'key', array('ROLE_FOO'));
-        $this->assertEquals(array(new Role('ROLE_FOO')), $token->getRoles());
+        $token = new UsernamePasswordToken('foo', 'bar', 'key', ['ROLE_FOO']);
+        $this->assertEquals([new Role('ROLE_FOO')], $token->getRoles());
         $this->assertTrue($token->isAuthenticated());
         $this->assertEquals('key', $token->getProviderKey());
     }
@@ -53,7 +53,7 @@ public function testEraseCredentials()
 
     public function testToString()
     {
-        $token = new UsernamePasswordToken('foo', '', 'foo', array('A', 'B'));
+        $token = new UsernamePasswordToken('foo', '', 'foo', ['A', 'B']);
         $this->assertEquals('UsernamePasswordToken(user="foo", authenticated=true, roles="A, B")', (string) $token);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
index 61d85274fc38..9ee86a079bc9 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
@@ -25,7 +25,7 @@ class AccessDecisionManagerTest extends TestCase
      */
     public function testSetUnsupportedStrategy()
     {
-        new AccessDecisionManager(array($this->getVoter(VoterInterface::ACCESS_GRANTED)), 'fooBar');
+        new AccessDecisionManager([$this->getVoter(VoterInterface::ACCESS_GRANTED)], 'fooBar');
     }
 
     /**
@@ -36,7 +36,7 @@ public function testStrategies($strategy, $voters, $allowIfAllAbstainDecisions,
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
         $manager = new AccessDecisionManager($voters, $strategy, $allowIfAllAbstainDecisions, $allowIfEqualGrantedDeniedDecisions);
 
-        $this->assertSame($expected, $manager->decide($token, array('ROLE_FOO')));
+        $this->assertSame($expected, $manager->decide($token, ['ROLE_FOO']));
     }
 
     /**
@@ -44,27 +44,27 @@ public function testStrategies($strategy, $voters, $allowIfAllAbstainDecisions,
      */
     public function testStrategiesWith2Roles($token, $strategy, $voter, $expected)
     {
-        $manager = new AccessDecisionManager(array($voter), $strategy);
+        $manager = new AccessDecisionManager([$voter], $strategy);
 
-        $this->assertSame($expected, $manager->decide($token, array('ROLE_FOO', 'ROLE_BAR')));
+        $this->assertSame($expected, $manager->decide($token, ['ROLE_FOO', 'ROLE_BAR']));
     }
 
     public function getStrategiesWith2RolesTests()
     {
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
-        return array(
-            array($token, 'affirmative', $this->getVoter(VoterInterface::ACCESS_DENIED), false),
-            array($token, 'affirmative', $this->getVoter(VoterInterface::ACCESS_GRANTED), true),
+        return [
+            [$token, 'affirmative', $this->getVoter(VoterInterface::ACCESS_DENIED), false],
+            [$token, 'affirmative', $this->getVoter(VoterInterface::ACCESS_GRANTED), true],
 
-            array($token, 'consensus', $this->getVoter(VoterInterface::ACCESS_DENIED), false),
-            array($token, 'consensus', $this->getVoter(VoterInterface::ACCESS_GRANTED), true),
+            [$token, 'consensus', $this->getVoter(VoterInterface::ACCESS_DENIED), false],
+            [$token, 'consensus', $this->getVoter(VoterInterface::ACCESS_GRANTED), true],
 
-            array($token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_DENIED, VoterInterface::ACCESS_DENIED), false),
-            array($token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_DENIED, VoterInterface::ACCESS_GRANTED), false),
-            array($token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_GRANTED, VoterInterface::ACCESS_DENIED), false),
-            array($token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_GRANTED, VoterInterface::ACCESS_GRANTED), true),
-        );
+            [$token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_DENIED, VoterInterface::ACCESS_DENIED), false],
+            [$token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_DENIED, VoterInterface::ACCESS_GRANTED), false],
+            [$token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_GRANTED, VoterInterface::ACCESS_DENIED), false],
+            [$token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_GRANTED, VoterInterface::ACCESS_GRANTED), true],
+        ];
     }
 
     protected function getVoterFor2Roles($token, $vote1, $vote2)
@@ -72,10 +72,10 @@ protected function getVoterFor2Roles($token, $vote1, $vote2)
         $voter = $this->getMockBuilder('Symfony\Component\Security\Core\Authorization\Voter\VoterInterface')->getMock();
         $voter->expects($this->any())
               ->method('vote')
-              ->will($this->returnValueMap(array(
-                  array($token, null, array('ROLE_FOO'), $vote1),
-                  array($token, null, array('ROLE_BAR'), $vote2),
-              )))
+              ->will($this->returnValueMap([
+                  [$token, null, ['ROLE_FOO'], $vote1],
+                  [$token, null, ['ROLE_BAR'], $vote2],
+              ]))
         ;
 
         return $voter;
@@ -83,42 +83,42 @@ protected function getVoterFor2Roles($token, $vote1, $vote2)
 
     public function getStrategyTests()
     {
-        return array(
+        return [
             // affirmative
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(1, 0, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(1, 2, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 1, 0), false, true, false),
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 0, 1), false, true, false),
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 0, 1), true, true, true),
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(1, 0, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(1, 2, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 1, 0), false, true, false],
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 0, 1), false, true, false],
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 0, 1), true, true, true],
 
             // consensus
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(1, 0, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(1, 2, 0), false, true, false),
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 1, 0), false, true, true),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(1, 0, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(1, 2, 0), false, true, false],
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 1, 0), false, true, true],
 
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(0, 0, 1), false, true, false),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(0, 0, 1), false, true, false],
 
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(0, 0, 1), true, true, true),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(0, 0, 1), true, true, true],
 
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 1), false, true, true),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 1), false, true, true],
 
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 0), false, false, false),
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 1), false, false, false),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 0), false, false, false],
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 1), false, false, false],
 
             // unanimous
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 0, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 0, 1), false, true, true),
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 1, 0), false, true, false),
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 0, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 0, 1), false, true, true],
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 1, 0), false, true, false],
 
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(0, 0, 2), false, true, false),
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(0, 0, 2), true, true, true),
-        );
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(0, 0, 2), false, true, false],
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(0, 0, 2), true, true, true],
+        ];
     }
 
     protected function getVoters($grants, $denies, $abstains)
     {
-        $voters = array();
+        $voters = [];
         for ($i = 0; $i < $grants; ++$i) {
             $voters[] = $this->getVoter(VoterInterface::ACCESS_GRANTED);
         }
@@ -154,10 +154,10 @@ public function testVotingWrongTypeNoVoteMethod()
             $this->setExpectedException($exception, $message);
         }
 
-        $adm = new AccessDecisionManager(array(new \stdClass()));
+        $adm = new AccessDecisionManager([new \stdClass()]);
         $token = $this->getMockBuilder(TokenInterface::class)->getMock();
 
-        $adm->decide($token, array('TEST'));
+        $adm->decide($token, ['TEST']);
     }
 
     /**
@@ -166,9 +166,9 @@ public function testVotingWrongTypeNoVoteMethod()
      */
     public function testVotingWrongTypeWithVote()
     {
-        $adm = new AccessDecisionManager(array(new VoterWithoutInterface()));
+        $adm = new AccessDecisionManager([new VoterWithoutInterface()]);
         $token = $this->getMockBuilder(TokenInterface::class)->getMock();
 
-        $adm->decide($token, array('TEST'));
+        $adm->decide($token, ['TEST']);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/AuthorizationCheckerTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/AuthorizationCheckerTest.php
index e3e1c447af3c..6a07c94f2039 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/AuthorizationCheckerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/AuthorizationCheckerTest.php
@@ -95,6 +95,6 @@ public function testIsGranted($decide)
 
     public function isGrantedProvider()
     {
-        return array(array(true), array(false));
+        return [[true], [false]];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php
index 873d9d57d17f..1b6ef1fdfb9e 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php
@@ -24,14 +24,14 @@ class ExpressionLanguageTest extends TestCase
     /**
      * @dataProvider provider
      */
-    public function testIsAuthenticated($token, $expression, $result, array $roles = array())
+    public function testIsAuthenticated($token, $expression, $result, array $roles = [])
     {
         $anonymousTokenClass = 'Symfony\\Component\\Security\\Core\\Authentication\\Token\\AnonymousToken';
         $rememberMeTokenClass = 'Symfony\\Component\\Security\\Core\\Authentication\\Token\\RememberMeToken';
         $expressionLanguage = new ExpressionLanguage();
         $trustResolver = new AuthenticationTrustResolver($anonymousTokenClass, $rememberMeTokenClass);
 
-        $context = array();
+        $context = [];
         $context['trust_resolver'] = $trustResolver;
         $context['token'] = $token;
         $context['roles'] = $roles;
@@ -41,7 +41,7 @@ public function testIsAuthenticated($token, $expression, $result, array $roles =
 
     public function provider()
     {
-        $roles = array('ROLE_USER', 'ROLE_ADMIN');
+        $roles = ['ROLE_USER', 'ROLE_ADMIN'];
         $user = new User('username', 'password', $roles);
 
         $noToken = null;
@@ -49,32 +49,32 @@ public function provider()
         $rememberMeToken = new RememberMeToken($user, 'providerkey', 'firewall');
         $usernamePasswordToken = new UsernamePasswordToken('username', 'password', 'providerkey', $roles);
 
-        return array(
-            array($noToken, 'is_anonymous()', false),
-            array($noToken, 'is_authenticated()', false),
-            array($noToken, 'is_fully_authenticated()', false),
-            array($noToken, 'is_remember_me()', false),
-            array($noToken, "has_role('ROLE_USER')", false),
+        return [
+            [$noToken, 'is_anonymous()', false],
+            [$noToken, 'is_authenticated()', false],
+            [$noToken, 'is_fully_authenticated()', false],
+            [$noToken, 'is_remember_me()', false],
+            [$noToken, "has_role('ROLE_USER')", false],
 
-            array($anonymousToken, 'is_anonymous()', true),
-            array($anonymousToken, 'is_authenticated()', false),
-            array($anonymousToken, 'is_fully_authenticated()', false),
-            array($anonymousToken, 'is_remember_me()', false),
-            array($anonymousToken, "has_role('ROLE_USER')", false),
+            [$anonymousToken, 'is_anonymous()', true],
+            [$anonymousToken, 'is_authenticated()', false],
+            [$anonymousToken, 'is_fully_authenticated()', false],
+            [$anonymousToken, 'is_remember_me()', false],
+            [$anonymousToken, "has_role('ROLE_USER')", false],
 
-            array($rememberMeToken, 'is_anonymous()', false),
-            array($rememberMeToken, 'is_authenticated()', true),
-            array($rememberMeToken, 'is_fully_authenticated()', false),
-            array($rememberMeToken, 'is_remember_me()', true),
-            array($rememberMeToken, "has_role('ROLE_FOO')", false, $roles),
-            array($rememberMeToken, "has_role('ROLE_USER')", true, $roles),
+            [$rememberMeToken, 'is_anonymous()', false],
+            [$rememberMeToken, 'is_authenticated()', true],
+            [$rememberMeToken, 'is_fully_authenticated()', false],
+            [$rememberMeToken, 'is_remember_me()', true],
+            [$rememberMeToken, "has_role('ROLE_FOO')", false, $roles],
+            [$rememberMeToken, "has_role('ROLE_USER')", true, $roles],
 
-            array($usernamePasswordToken, 'is_anonymous()', false),
-            array($usernamePasswordToken, 'is_authenticated()', true),
-            array($usernamePasswordToken, 'is_fully_authenticated()', true),
-            array($usernamePasswordToken, 'is_remember_me()', false),
-            array($usernamePasswordToken, "has_role('ROLE_FOO')", false, $roles),
-            array($usernamePasswordToken, "has_role('ROLE_USER')", true, $roles),
-        );
+            [$usernamePasswordToken, 'is_anonymous()', false],
+            [$usernamePasswordToken, 'is_authenticated()', true],
+            [$usernamePasswordToken, 'is_fully_authenticated()', true],
+            [$usernamePasswordToken, 'is_remember_me()', false],
+            [$usernamePasswordToken, "has_role('ROLE_FOO')", false, $roles],
+            [$usernamePasswordToken, "has_role('ROLE_USER')", true, $roles],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
index 100a4dd4d1d1..c9ad61a6a6d3 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
@@ -25,7 +25,7 @@ class TraceableAccessDecisionManagerTest extends TestCase
     public function testDecideLog($expectedLog, $object)
     {
         $adm = new TraceableAccessDecisionManager(new AccessDecisionManager());
-        $adm->decide($this->getMockBuilder(TokenInterface::class)->getMock(), array('ATTRIBUTE_1'), $object);
+        $adm->decide($this->getMockBuilder(TokenInterface::class)->getMock(), ['ATTRIBUTE_1'], $object);
 
         $this->assertSame($expectedLog, $adm->getDecisionLog());
     }
@@ -34,13 +34,13 @@ public function provideObjectsAndLogs()
     {
         $object = new \stdClass();
 
-        yield array(array(array('attributes' => array('ATTRIBUTE_1'), 'object' => null, 'result' => false)), null);
-        yield array(array(array('attributes' => array('ATTRIBUTE_1'), 'object' => true, 'result' => false)), true);
-        yield array(array(array('attributes' => array('ATTRIBUTE_1'), 'object' => 'jolie string', 'result' => false)), 'jolie string');
-        yield array(array(array('attributes' => array('ATTRIBUTE_1'), 'object' => 12345, 'result' => false)), 12345);
-        yield array(array(array('attributes' => array('ATTRIBUTE_1'), 'object' => $x = fopen(__FILE__, 'r'), 'result' => false)), $x);
-        yield array(array(array('attributes' => array('ATTRIBUTE_1'), 'object' => $x = array(), 'result' => false)), $x);
-        yield array(array(array('attributes' => array('ATTRIBUTE_1'), 'object' => $object, 'result' => false)), $object);
+        yield [[['attributes' => ['ATTRIBUTE_1'], 'object' => null, 'result' => false]], null];
+        yield [[['attributes' => ['ATTRIBUTE_1'], 'object' => true, 'result' => false]], true];
+        yield [[['attributes' => ['ATTRIBUTE_1'], 'object' => 'jolie string', 'result' => false]], 'jolie string'];
+        yield [[['attributes' => ['ATTRIBUTE_1'], 'object' => 12345, 'result' => false]], 12345];
+        yield [[['attributes' => ['ATTRIBUTE_1'], 'object' => $x = fopen(__FILE__, 'r'), 'result' => false]], $x];
+        yield [[['attributes' => ['ATTRIBUTE_1'], 'object' => $x = [], 'result' => false]], $x];
+        yield [[['attributes' => ['ATTRIBUTE_1'], 'object' => $object, 'result' => false]], $object];
     }
 
     public function testDebugAccessDecisionManagerAliasExistsForBC()
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/AuthenticatedVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/AuthenticatedVoterTest.php
index 1ba7e39163ad..6bbe07cfdc3c 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/AuthenticatedVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/AuthenticatedVoterTest.php
@@ -30,26 +30,26 @@ public function testVote($authenticated, $attributes, $expected)
 
     public function getVoteTests()
     {
-        return array(
-            array('fully', array(), VoterInterface::ACCESS_ABSTAIN),
-            array('fully', array('FOO'), VoterInterface::ACCESS_ABSTAIN),
-            array('remembered', array(), VoterInterface::ACCESS_ABSTAIN),
-            array('remembered', array('FOO'), VoterInterface::ACCESS_ABSTAIN),
-            array('anonymously', array(), VoterInterface::ACCESS_ABSTAIN),
-            array('anonymously', array('FOO'), VoterInterface::ACCESS_ABSTAIN),
+        return [
+            ['fully', [], VoterInterface::ACCESS_ABSTAIN],
+            ['fully', ['FOO'], VoterInterface::ACCESS_ABSTAIN],
+            ['remembered', [], VoterInterface::ACCESS_ABSTAIN],
+            ['remembered', ['FOO'], VoterInterface::ACCESS_ABSTAIN],
+            ['anonymously', [], VoterInterface::ACCESS_ABSTAIN],
+            ['anonymously', ['FOO'], VoterInterface::ACCESS_ABSTAIN],
 
-            array('fully', array('IS_AUTHENTICATED_ANONYMOUSLY'), VoterInterface::ACCESS_GRANTED),
-            array('remembered', array('IS_AUTHENTICATED_ANONYMOUSLY'), VoterInterface::ACCESS_GRANTED),
-            array('anonymously', array('IS_AUTHENTICATED_ANONYMOUSLY'), VoterInterface::ACCESS_GRANTED),
+            ['fully', ['IS_AUTHENTICATED_ANONYMOUSLY'], VoterInterface::ACCESS_GRANTED],
+            ['remembered', ['IS_AUTHENTICATED_ANONYMOUSLY'], VoterInterface::ACCESS_GRANTED],
+            ['anonymously', ['IS_AUTHENTICATED_ANONYMOUSLY'], VoterInterface::ACCESS_GRANTED],
 
-            array('fully', array('IS_AUTHENTICATED_REMEMBERED'), VoterInterface::ACCESS_GRANTED),
-            array('remembered', array('IS_AUTHENTICATED_REMEMBERED'), VoterInterface::ACCESS_GRANTED),
-            array('anonymously', array('IS_AUTHENTICATED_REMEMBERED'), VoterInterface::ACCESS_DENIED),
+            ['fully', ['IS_AUTHENTICATED_REMEMBERED'], VoterInterface::ACCESS_GRANTED],
+            ['remembered', ['IS_AUTHENTICATED_REMEMBERED'], VoterInterface::ACCESS_GRANTED],
+            ['anonymously', ['IS_AUTHENTICATED_REMEMBERED'], VoterInterface::ACCESS_DENIED],
 
-            array('fully', array('IS_AUTHENTICATED_FULLY'), VoterInterface::ACCESS_GRANTED),
-            array('remembered', array('IS_AUTHENTICATED_FULLY'), VoterInterface::ACCESS_DENIED),
-            array('anonymously', array('IS_AUTHENTICATED_FULLY'), VoterInterface::ACCESS_DENIED),
-        );
+            ['fully', ['IS_AUTHENTICATED_FULLY'], VoterInterface::ACCESS_GRANTED],
+            ['remembered', ['IS_AUTHENTICATED_FULLY'], VoterInterface::ACCESS_DENIED],
+            ['anonymously', ['IS_AUTHENTICATED_FULLY'], VoterInterface::ACCESS_DENIED],
+        ];
     }
 
     protected function getResolver()
@@ -65,9 +65,9 @@ protected function getToken($authenticated)
         if ('fully' === $authenticated) {
             return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
         } elseif ('remembered' === $authenticated) {
-            return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\RememberMeToken')->setMethods(array('setPersistent'))->disableOriginalConstructor()->getMock();
+            return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\RememberMeToken')->setMethods(['setPersistent'])->disableOriginalConstructor()->getMock();
         } else {
-            return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\AnonymousToken')->setConstructorArgs(array('', ''))->getMock();
+            return $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\AnonymousToken')->setConstructorArgs(['', ''])->getMock();
         }
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/ExpressionVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/ExpressionVoterTest.php
index 79626835264a..7e435687c8c3 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/ExpressionVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/ExpressionVoterTest.php
@@ -30,15 +30,15 @@ public function testVote($roles, $attributes, $expected, $tokenExpectsGetRoles =
 
     public function getVoteTests()
     {
-        return array(
-            array(array(), array(), VoterInterface::ACCESS_ABSTAIN, false, false),
-            array(array(), array('FOO'), VoterInterface::ACCESS_ABSTAIN, false, false),
+        return [
+            [[], [], VoterInterface::ACCESS_ABSTAIN, false, false],
+            [[], ['FOO'], VoterInterface::ACCESS_ABSTAIN, false, false],
 
-            array(array(), array($this->createExpression()), VoterInterface::ACCESS_DENIED, true, false),
+            [[], [$this->createExpression()], VoterInterface::ACCESS_DENIED, true, false],
 
-            array(array('ROLE_FOO'), array($this->createExpression(), $this->createExpression()), VoterInterface::ACCESS_GRANTED),
-            array(array('ROLE_BAR', 'ROLE_FOO'), array($this->createExpression()), VoterInterface::ACCESS_GRANTED),
-        );
+            [['ROLE_FOO'], [$this->createExpression(), $this->createExpression()], VoterInterface::ACCESS_GRANTED],
+            [['ROLE_BAR', 'ROLE_FOO'], [$this->createExpression()], VoterInterface::ACCESS_GRANTED],
+        ];
     }
 
     protected function getToken(array $roles, $tokenExpectsGetRoles = true)
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleHierarchyVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleHierarchyVoterTest.php
index 4b03bacd784a..14705fbf960e 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleHierarchyVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleHierarchyVoterTest.php
@@ -22,16 +22,16 @@ class RoleHierarchyVoterTest extends RoleVoterTest
      */
     public function testVote($roles, $attributes, $expected)
     {
-        $voter = new RoleHierarchyVoter(new RoleHierarchy(array('ROLE_FOO' => array('ROLE_FOOBAR'))));
+        $voter = new RoleHierarchyVoter(new RoleHierarchy(['ROLE_FOO' => ['ROLE_FOOBAR']]));
 
         $this->assertSame($expected, $voter->vote($this->getToken($roles), null, $attributes));
     }
 
     public function getVoteTests()
     {
-        return array_merge(parent::getVoteTests(), array(
-            array(array('ROLE_FOO'), array('ROLE_FOOBAR'), VoterInterface::ACCESS_GRANTED),
-        ));
+        return array_merge(parent::getVoteTests(), [
+            [['ROLE_FOO'], ['ROLE_FOOBAR'], VoterInterface::ACCESS_GRANTED],
+        ]);
     }
 
     /**
@@ -39,7 +39,7 @@ public function getVoteTests()
      */
     public function testVoteWithEmptyHierarchy($roles, $attributes, $expected)
     {
-        $voter = new RoleHierarchyVoter(new RoleHierarchy(array()));
+        $voter = new RoleHierarchyVoter(new RoleHierarchy([]));
 
         $this->assertSame($expected, $voter->vote($this->getToken($roles), null, $attributes));
     }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
index 242a2f5814f8..5fb45e08b392 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
@@ -30,20 +30,20 @@ public function testVote($roles, $attributes, $expected)
 
     public function getVoteTests()
     {
-        return array(
-            array(array(), array(), VoterInterface::ACCESS_ABSTAIN),
-            array(array(), array('FOO'), VoterInterface::ACCESS_ABSTAIN),
-            array(array(), array('ROLE_FOO'), VoterInterface::ACCESS_DENIED),
-            array(array('ROLE_FOO'), array('ROLE_FOO'), VoterInterface::ACCESS_GRANTED),
-            array(array('ROLE_FOO'), array('FOO', 'ROLE_FOO'), VoterInterface::ACCESS_GRANTED),
-            array(array('ROLE_BAR', 'ROLE_FOO'), array('ROLE_FOO'), VoterInterface::ACCESS_GRANTED),
+        return [
+            [[], [], VoterInterface::ACCESS_ABSTAIN],
+            [[], ['FOO'], VoterInterface::ACCESS_ABSTAIN],
+            [[], ['ROLE_FOO'], VoterInterface::ACCESS_DENIED],
+            [['ROLE_FOO'], ['ROLE_FOO'], VoterInterface::ACCESS_GRANTED],
+            [['ROLE_FOO'], ['FOO', 'ROLE_FOO'], VoterInterface::ACCESS_GRANTED],
+            [['ROLE_BAR', 'ROLE_FOO'], ['ROLE_FOO'], VoterInterface::ACCESS_GRANTED],
 
             // Test mixed Types
-            array(array(), array(array()), VoterInterface::ACCESS_ABSTAIN),
-            array(array(), array(new \stdClass()), VoterInterface::ACCESS_ABSTAIN),
-            array(array('ROLE_BAR'), array(new Role('ROLE_BAR')), VoterInterface::ACCESS_GRANTED),
-            array(array('ROLE_BAR'), array(new Role('ROLE_FOO')), VoterInterface::ACCESS_DENIED),
-        );
+            [[], [[]], VoterInterface::ACCESS_ABSTAIN],
+            [[], [new \stdClass()], VoterInterface::ACCESS_ABSTAIN],
+            [['ROLE_BAR'], [new Role('ROLE_BAR')], VoterInterface::ACCESS_GRANTED],
+            [['ROLE_BAR'], [new Role('ROLE_FOO')], VoterInterface::ACCESS_DENIED],
+        ];
     }
 
     protected function getToken(array $roles)
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/VoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/VoterTest.php
index f0e10cde1a28..50dc84e435a9 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/VoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/VoterTest.php
@@ -27,23 +27,23 @@ protected function setUp()
 
     public function getTests()
     {
-        return array(
-            array(array('EDIT'), VoterInterface::ACCESS_GRANTED, new \stdClass(), 'ACCESS_GRANTED if attribute and class are supported and attribute grants access'),
-            array(array('CREATE'), VoterInterface::ACCESS_DENIED, new \stdClass(), 'ACCESS_DENIED if attribute and class are supported and attribute does not grant access'),
+        return [
+            [['EDIT'], VoterInterface::ACCESS_GRANTED, new \stdClass(), 'ACCESS_GRANTED if attribute and class are supported and attribute grants access'],
+            [['CREATE'], VoterInterface::ACCESS_DENIED, new \stdClass(), 'ACCESS_DENIED if attribute and class are supported and attribute does not grant access'],
 
-            array(array('DELETE', 'EDIT'), VoterInterface::ACCESS_GRANTED, new \stdClass(), 'ACCESS_GRANTED if one attribute is supported and grants access'),
-            array(array('DELETE', 'CREATE'), VoterInterface::ACCESS_DENIED, new \stdClass(), 'ACCESS_DENIED if one attribute is supported and denies access'),
+            [['DELETE', 'EDIT'], VoterInterface::ACCESS_GRANTED, new \stdClass(), 'ACCESS_GRANTED if one attribute is supported and grants access'],
+            [['DELETE', 'CREATE'], VoterInterface::ACCESS_DENIED, new \stdClass(), 'ACCESS_DENIED if one attribute is supported and denies access'],
 
-            array(array('CREATE', 'EDIT'), VoterInterface::ACCESS_GRANTED, new \stdClass(), 'ACCESS_GRANTED if one attribute grants access'),
+            [['CREATE', 'EDIT'], VoterInterface::ACCESS_GRANTED, new \stdClass(), 'ACCESS_GRANTED if one attribute grants access'],
 
-            array(array('DELETE'), VoterInterface::ACCESS_ABSTAIN, new \stdClass(), 'ACCESS_ABSTAIN if no attribute is supported'),
+            [['DELETE'], VoterInterface::ACCESS_ABSTAIN, new \stdClass(), 'ACCESS_ABSTAIN if no attribute is supported'],
 
-            array(array('EDIT'), VoterInterface::ACCESS_ABSTAIN, $this, 'ACCESS_ABSTAIN if class is not supported'),
+            [['EDIT'], VoterInterface::ACCESS_ABSTAIN, $this, 'ACCESS_ABSTAIN if class is not supported'],
 
-            array(array('EDIT'), VoterInterface::ACCESS_ABSTAIN, null, 'ACCESS_ABSTAIN if object is null'),
+            [['EDIT'], VoterInterface::ACCESS_ABSTAIN, null, 'ACCESS_ABSTAIN if object is null'],
 
-            array(array(), VoterInterface::ACCESS_ABSTAIN, new \stdClass(), 'ACCESS_ABSTAIN if no attributes were provided'),
-        );
+            [[], VoterInterface::ACCESS_ABSTAIN, new \stdClass(), 'ACCESS_ABSTAIN if no attributes were provided'],
+        ];
     }
 
     /**
@@ -66,6 +66,6 @@ protected function voteOnAttribute($attribute, $object, TokenInterface $token)
 
     protected function supports($attribute, $object)
     {
-        return $object instanceof \stdClass && \in_array($attribute, array('EDIT', 'CREATE'));
+        return $object instanceof \stdClass && \in_array($attribute, ['EDIT', 'CREATE']);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Encoder/BCryptPasswordEncoderTest.php b/src/Symfony/Component/Security/Core/Tests/Encoder/BCryptPasswordEncoderTest.php
index 55590ffc3d0a..7f9dbe7f33fd 100644
--- a/src/Symfony/Component/Security/Core/Tests/Encoder/BCryptPasswordEncoderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Encoder/BCryptPasswordEncoderTest.php
@@ -49,7 +49,7 @@ public function testCostInRange($cost)
     public function validRangeData()
     {
         $costs = range(4, 31);
-        array_walk($costs, function (&$cost) { $cost = array($cost); });
+        array_walk($costs, function (&$cost) { $cost = [$cost]; });
 
         return $costs;
     }
diff --git a/src/Symfony/Component/Security/Core/Tests/Encoder/BasePasswordEncoderTest.php b/src/Symfony/Component/Security/Core/Tests/Encoder/BasePasswordEncoderTest.php
index 0742f421df56..2251cfdf906e 100644
--- a/src/Symfony/Component/Security/Core/Tests/Encoder/BasePasswordEncoderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Encoder/BasePasswordEncoderTest.php
@@ -35,9 +35,9 @@ public function testComparePassword()
 
     public function testDemergePasswordAndSalt()
     {
-        $this->assertEquals(array('password', 'salt'), $this->invokeDemergePasswordAndSalt('password{salt}'));
-        $this->assertEquals(array('password', ''), $this->invokeDemergePasswordAndSalt('password'));
-        $this->assertEquals(array('', ''), $this->invokeDemergePasswordAndSalt(''));
+        $this->assertEquals(['password', 'salt'], $this->invokeDemergePasswordAndSalt('password{salt}'));
+        $this->assertEquals(['password', ''], $this->invokeDemergePasswordAndSalt('password'));
+        $this->assertEquals(['', ''], $this->invokeDemergePasswordAndSalt(''));
     }
 
     public function testMergePasswordAndSalt()
diff --git a/src/Symfony/Component/Security/Core/Tests/Encoder/EncoderFactoryTest.php b/src/Symfony/Component/Security/Core/Tests/Encoder/EncoderFactoryTest.php
index 9a56b838aae3..ae8467af5753 100644
--- a/src/Symfony/Component/Security/Core/Tests/Encoder/EncoderFactoryTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Encoder/EncoderFactoryTest.php
@@ -22,10 +22,10 @@ class EncoderFactoryTest extends TestCase
 {
     public function testGetEncoderWithMessageDigestEncoder()
     {
-        $factory = new EncoderFactory(array('Symfony\Component\Security\Core\User\UserInterface' => array(
+        $factory = new EncoderFactory(['Symfony\Component\Security\Core\User\UserInterface' => [
             'class' => 'Symfony\Component\Security\Core\Encoder\MessageDigestPasswordEncoder',
-            'arguments' => array('sha512', true, 5),
-        )));
+            'arguments' => ['sha512', true, 5],
+        ]]);
 
         $encoder = $factory->getEncoder($this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock());
         $expectedEncoder = new MessageDigestPasswordEncoder('sha512', true, 5);
@@ -35,9 +35,9 @@ public function testGetEncoderWithMessageDigestEncoder()
 
     public function testGetEncoderWithService()
     {
-        $factory = new EncoderFactory(array(
+        $factory = new EncoderFactory([
             'Symfony\Component\Security\Core\User\UserInterface' => new MessageDigestPasswordEncoder('sha1'),
-        ));
+        ]);
 
         $encoder = $factory->getEncoder($this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock());
         $expectedEncoder = new MessageDigestPasswordEncoder('sha1');
@@ -50,9 +50,9 @@ public function testGetEncoderWithService()
 
     public function testGetEncoderWithClassName()
     {
-        $factory = new EncoderFactory(array(
+        $factory = new EncoderFactory([
             'Symfony\Component\Security\Core\User\UserInterface' => new MessageDigestPasswordEncoder('sha1'),
-        ));
+        ]);
 
         $encoder = $factory->getEncoder('Symfony\Component\Security\Core\Tests\Encoder\SomeChildUser');
         $expectedEncoder = new MessageDigestPasswordEncoder('sha1');
@@ -61,9 +61,9 @@ public function testGetEncoderWithClassName()
 
     public function testGetEncoderConfiguredForConcreteClassWithService()
     {
-        $factory = new EncoderFactory(array(
+        $factory = new EncoderFactory([
             'Symfony\Component\Security\Core\User\User' => new MessageDigestPasswordEncoder('sha1'),
-        ));
+        ]);
 
         $encoder = $factory->getEncoder(new User('user', 'pass'));
         $expectedEncoder = new MessageDigestPasswordEncoder('sha1');
@@ -72,9 +72,9 @@ public function testGetEncoderConfiguredForConcreteClassWithService()
 
     public function testGetEncoderConfiguredForConcreteClassWithClassName()
     {
-        $factory = new EncoderFactory(array(
+        $factory = new EncoderFactory([
             'Symfony\Component\Security\Core\Tests\Encoder\SomeUser' => new MessageDigestPasswordEncoder('sha1'),
-        ));
+        ]);
 
         $encoder = $factory->getEncoder('Symfony\Component\Security\Core\Tests\Encoder\SomeChildUser');
         $expectedEncoder = new MessageDigestPasswordEncoder('sha1');
@@ -83,10 +83,10 @@ public function testGetEncoderConfiguredForConcreteClassWithClassName()
 
     public function testGetNamedEncoderForEncoderAware()
     {
-        $factory = new EncoderFactory(array(
+        $factory = new EncoderFactory([
             'Symfony\Component\Security\Core\Tests\Encoder\EncAwareUser' => new MessageDigestPasswordEncoder('sha256'),
             'encoder_name' => new MessageDigestPasswordEncoder('sha1'),
-        ));
+        ]);
 
         $encoder = $factory->getEncoder(new EncAwareUser('user', 'pass'));
         $expectedEncoder = new MessageDigestPasswordEncoder('sha1');
@@ -95,10 +95,10 @@ public function testGetNamedEncoderForEncoderAware()
 
     public function testGetNullNamedEncoderForEncoderAware()
     {
-        $factory = new EncoderFactory(array(
+        $factory = new EncoderFactory([
             'Symfony\Component\Security\Core\Tests\Encoder\EncAwareUser' => new MessageDigestPasswordEncoder('sha1'),
             'encoder_name' => new MessageDigestPasswordEncoder('sha256'),
-        ));
+        ]);
 
         $user = new EncAwareUser('user', 'pass');
         $user->encoderName = null;
@@ -112,10 +112,10 @@ public function testGetNullNamedEncoderForEncoderAware()
      */
     public function testGetInvalidNamedEncoderForEncoderAware()
     {
-        $factory = new EncoderFactory(array(
+        $factory = new EncoderFactory([
             'Symfony\Component\Security\Core\Tests\Encoder\EncAwareUser' => new MessageDigestPasswordEncoder('sha1'),
             'encoder_name' => new MessageDigestPasswordEncoder('sha256'),
-        ));
+        ]);
 
         $user = new EncAwareUser('user', 'pass');
         $user->encoderName = 'invalid_encoder_name';
@@ -124,10 +124,10 @@ public function testGetInvalidNamedEncoderForEncoderAware()
 
     public function testGetEncoderForEncoderAwareWithClassName()
     {
-        $factory = new EncoderFactory(array(
+        $factory = new EncoderFactory([
             'Symfony\Component\Security\Core\Tests\Encoder\EncAwareUser' => new MessageDigestPasswordEncoder('sha1'),
             'encoder_name' => new MessageDigestPasswordEncoder('sha256'),
-        ));
+        ]);
 
         $encoder = $factory->getEncoder('Symfony\Component\Security\Core\Tests\Encoder\EncAwareUser');
         $expectedEncoder = new MessageDigestPasswordEncoder('sha1');
diff --git a/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php b/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
index 5776a991011a..ebf94384c0da 100644
--- a/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
@@ -18,10 +18,10 @@ class CustomUserMessageAuthenticationExceptionTest extends TestCase
 {
     public function testConstructWithSAfeMessage()
     {
-        $e = new CustomUserMessageAuthenticationException('SAFE MESSAGE', array('foo' => true));
+        $e = new CustomUserMessageAuthenticationException('SAFE MESSAGE', ['foo' => true]);
 
         $this->assertEquals('SAFE MESSAGE', $e->getMessageKey());
-        $this->assertEquals(array('foo' => true), $e->getMessageData());
+        $this->assertEquals(['foo' => true], $e->getMessageData());
         $this->assertEquals('SAFE MESSAGE', $e->getMessage());
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Exception/UsernameNotFoundExceptionTest.php b/src/Symfony/Component/Security/Core/Tests/Exception/UsernameNotFoundExceptionTest.php
index b7e5c556d75a..8e256aac2ea1 100644
--- a/src/Symfony/Component/Security/Core/Tests/Exception/UsernameNotFoundExceptionTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Exception/UsernameNotFoundExceptionTest.php
@@ -19,8 +19,8 @@ class UsernameNotFoundExceptionTest extends TestCase
     public function testGetMessageData()
     {
         $exception = new UsernameNotFoundException('Username could not be found.');
-        $this->assertEquals(array('{{ username }}' => null), $exception->getMessageData());
+        $this->assertEquals(['{{ username }}' => null], $exception->getMessageData());
         $exception->setUsername('username');
-        $this->assertEquals(array('{{ username }}' => 'username'), $exception->getMessageData());
+        $this->assertEquals(['{{ username }}' => 'username'], $exception->getMessageData());
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Role/RoleHierarchyTest.php b/src/Symfony/Component/Security/Core/Tests/Role/RoleHierarchyTest.php
index 9e6b9d3a2b26..4451f391adb3 100644
--- a/src/Symfony/Component/Security/Core/Tests/Role/RoleHierarchyTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Role/RoleHierarchyTest.php
@@ -19,15 +19,15 @@ class RoleHierarchyTest extends TestCase
 {
     public function testGetReachableRoles()
     {
-        $role = new RoleHierarchy(array(
-            'ROLE_ADMIN' => array('ROLE_USER'),
-            'ROLE_SUPER_ADMIN' => array('ROLE_ADMIN', 'ROLE_FOO'),
-        ));
+        $role = new RoleHierarchy([
+            'ROLE_ADMIN' => ['ROLE_USER'],
+            'ROLE_SUPER_ADMIN' => ['ROLE_ADMIN', 'ROLE_FOO'],
+        ]);
 
-        $this->assertEquals(array(new Role('ROLE_USER')), $role->getReachableRoles(array(new R
10000
ole('ROLE_USER'))));
-        $this->assertEquals(array(new Role('ROLE_FOO')), $role->getReachableRoles(array(new Role('ROLE_FOO'))));
-        $this->assertEquals(array(new Role('ROLE_ADMIN'), new Role('ROLE_USER')), $role->getReachableRoles(array(new Role('ROLE_ADMIN'))));
-        $this->assertEquals(array(new Role('ROLE_FOO'), new Role('ROLE_ADMIN'), new Role('ROLE_USER')), $role->getReachableRoles(array(new Role('ROLE_FOO'), new Role('ROLE_ADMIN'))));
-        $this->assertEquals(array(new Role('ROLE_SUPER_ADMIN'), new Role('ROLE_ADMIN'), new Role('ROLE_FOO'), new Role('ROLE_USER')), $role->getReachableRoles(array(new Role('ROLE_SUPER_ADMIN'))));
+        $this->assertEquals([new Role('ROLE_USER')], $role->getReachableRoles([new Role('ROLE_USER')]));
+        $this->assertEquals([new Role('ROLE_FOO')], $role->getReachableRoles([new Role('ROLE_FOO')]));
+        $this->assertEquals([new Role('ROLE_ADMIN'), new Role('ROLE_USER')], $role->getReachableRoles([new Role('ROLE_ADMIN')]));
+        $this->assertEquals([new Role('ROLE_FOO'), new Role('ROLE_ADMIN'), new Role('ROLE_USER')], $role->getReachableRoles([new Role('ROLE_FOO'), new Role('ROLE_ADMIN')]));
+        $this->assertEquals([new Role('ROLE_SUPER_ADMIN'), new Role('ROLE_ADMIN'), new Role('ROLE_FOO'), new Role('ROLE_USER')], $role->getReachableRoles([new Role('ROLE_SUPER_ADMIN')]));
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/SecurityTest.php b/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
index b2ba5d0d5fa1..7a1b572fc7d0 100644
--- a/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
@@ -60,12 +60,12 @@ public function testGetUser($userInToken, $expectedUser)
 
     public function getUserTests()
     {
-        yield array(null, null);
+        yield [null, null];
 
-        yield array('string_username', null);
+        yield ['string_username', null];
 
         $user = new User('nice_user', 'foo');
-        yield array($user, $user);
+        yield [$user, $user];
     }
 
     public function testIsGranted()
diff --git a/src/Symfony/Component/Security/Core/Tests/User/ChainUserProviderTest.php b/src/Symfony/Component/Security/Core/Tests/User/ChainUserProviderTest.php
index 74bc42d624d4..067eef2497b8 100644
--- a/src/Symfony/Component/Security/Core/Tests/User/ChainUserProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/User/ChainUserProviderTest.php
@@ -36,7 +36,7 @@ public function testLoadUserByUsername()
             ->will($this->returnValue($account = $this->getAccount()))
         ;
 
-        $provider = new ChainUserProvider(array($provider1, $provider2));
+        $provider = new ChainUserProvider([$provider1, $provider2]);
         $this->assertSame($account, $provider->loadUserByUsername('foo'));
     }
 
@@ -61,7 +61,7 @@ public function testLoadUserByUsernameThrowsUsernameNotFoundException()
             ->willThrowException(new UsernameNotFoundException('not found'))
         ;
 
-        $provider = new ChainUserProvider(array($provider1, $provider2));
+        $provider = new ChainUserProvider([$provider1, $provider2]);
         $provider->loadUserByUsername('foo');
     }
 
@@ -81,7 +81,7 @@ public function testRefreshUser()
             ->will($this->returnValue($account = $this->getAccount()))
         ;
 
-        $provider = new ChainUserProvider(array($provider1, $provider2));
+        $provider = new ChainUserProvider([$provider1, $provider2]);
         $this->assertSame($account, $provider->refreshUser($this->getAccount()));
     }
 
@@ -101,7 +101,7 @@ public function testRefreshUserAgain()
             ->will($this->returnValue($account = $this->getAccount()))
         ;
 
-        $provider = new ChainUserProvider(array($provider1, $provider2));
+        $provider = new ChainUserProvider([$provider1, $provider2]);
         $this->assertSame($account, $provider->refreshUser($this->getAccount()));
     }
 
@@ -124,7 +124,7 @@ public function testRefreshUserThrowsUnsupportedUserException()
             ->willThrowException(new UnsupportedUserException('unsupported'))
         ;
 
-        $provider = new ChainUserProvider(array($provider1, $provider2));
+        $provider = new ChainUserProvider([$provider1, $provider2]);
         $provider->refreshUser($this->getAccount());
     }
 
@@ -146,7 +146,7 @@ public function testSupportsClass()
             ->will($this->returnValue(true))
         ;
 
-        $provider = new ChainUserProvider(array($provider1, $provider2));
+        $provider = new ChainUserProvider([$provider1, $provider2]);
         $this->assertTrue($provider->supportsClass('foo'));
     }
 
@@ -168,7 +168,7 @@ public function testSupportsClassWhenNotSupported()
             ->will($this->returnValue(false))
         ;
 
-        $provider = new ChainUserProvider(array($provider1, $provider2));
+        $provider = new ChainUserProvider([$provider1, $provider2]);
         $this->assertFalse($provider->supportsClass('foo'));
     }
 
@@ -188,7 +188,7 @@ public function testAcceptsTraversable()
             ->will($this->returnValue($account = $this->getAccount()))
         ;
 
-        $provider = new ChainUserProvider(new \ArrayObject(array($provider1, $provider2)));
+        $provider = new ChainUserProvider(new \ArrayObject([$provider1, $provider2]));
         $this->assertSame($account, $provider->refreshUser($this->getAccount()));
     }
 
diff --git a/src/Symfony/Component/Security/Core/Tests/User/InMemoryUserProviderTest.php b/src/Symfony/Component/Security/Core/Tests/User/InMemoryUserProviderTest.php
index 6647a76a1286..b1ff3b66e17e 100644
--- a/src/Symfony/Component/Security/Core/Tests/User/InMemoryUserProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/User/InMemoryUserProviderTest.php
@@ -23,7 +23,7 @@ public function testConstructor()
 
         $user = $provider->loadUserByUsername('fabien');
         $this->assertEquals('foo', $user->getPassword());
-        $this->assertEquals(array('ROLE_USER'), $user->getRoles());
+        $this->assertEquals(['ROLE_USER'], $user->getRoles());
         $this->assertFalse($user->isEnabled());
     }
 
@@ -35,7 +35,7 @@ public function testRefresh()
 
         $refreshedUser = $provider->refreshUser($user);
         $this->assertEquals('foo', $refreshedUser->getPassword());
-        $this->assertEquals(array('ROLE_USER'), $refreshedUser->getRoles());
+        $this->assertEquals(['ROLE_USER'], $refreshedUser->getRoles());
         $this->assertFalse($refreshedUser->isEnabled());
         $this->assertFalse($refreshedUser->isCredentialsNonExpired());
     }
@@ -45,13 +45,13 @@ public function testRefresh()
      */
     protected function createProvider()
     {
-        return new InMemoryUserProvider(array(
-            'fabien' => array(
+        return new InMemoryUserProvider([
+            'fabien' => [
                 'password' => 'foo',
                 'enabled' => false,
-                'roles' => array('ROLE_USER'),
-            ),
-        ));
+                'roles' => ['ROLE_USER'],
+            ],
+        ]);
     }
 
     public function testCreateUser()
diff --git a/src/Symfony/Component/Security/Core/Tests/User/LdapUserProviderTest.php b/src/Symfony/Component/Security/Core/Tests/User/LdapUserProviderTest.php
index 2cecf70728d5..418475ac9381 100644
--- a/src/Symfony/Component/Security/Core/Tests/User/LdapUserProviderTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/User/LdapUserProviderTest.php
@@ -123,10 +123,10 @@ public function testLoadUserByUsernameFailsIfMoreThanOneLdapPasswordsInEntry()
             ->expects($this->once())
             ->method('offsetGet')
             ->with(0)
-            ->will($this->returnValue(new Entry('foo', array(
-                    'sAMAccountName' => array('foo'),
-                    'userpassword' => array('bar', 'baz'),
-                )
+            ->will($this->returnValue(new Entry('foo', [
+                    'sAMAccountName' => ['foo'],
+                    'userpassword' => ['bar', 'baz'],
+                ]
             )))
         ;
         $result
@@ -145,7 +145,7 @@ public function testLoadUserByUsernameFailsIfMoreThanOneLdapPasswordsInEntry()
             ->will($this->returnValue($query))
         ;
 
-        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com', null, null, array(), 'sAMAccountName', '({uid_key}={username})', 'userpassword');
+        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com', null, null, [], 'sAMAccountName', '({uid_key}={username})', 'userpassword');
         $this->assertInstanceOf(
             'Symfony\Component\Security\Core\User\User',
             $provider->loadUserByUsername('foo')
@@ -166,7 +166,7 @@ public function testLoadUserByUsernameShouldNotFailIfEntryHasNoUidKeyAttribute()
             ->expects($this->once())
             ->method('offsetGet')
             ->with(0)
-            ->will($this->returnValue(new Entry('foo', array())))
+            ->will($this->returnValue(new Entry('foo', [])))
         ;
         $result
             ->expects($this->once())
@@ -184,7 +184,7 @@ public function testLoadUserByUsernameShouldNotFailIfEntryHasNoUidKeyAttribute()
             ->will($this->returnValue($query))
         ;
 
-        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com', null, null, array(), 'sAMAccountName', '({uid_key}={username})');
+        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com', null, null, [], 'sAMAccountName', '({uid_key}={username})');
         $this->assertInstanceOf(
             'Symfony\Component\Security\Core\User\User',
             $provider->loadUserByUsername('foo')
@@ -208,9 +208,9 @@ public function testLoadUserByUsernameFailsIfEntryHasNoPasswordAttribute()
             ->expects($this->once())
             ->method('offsetGet')
             ->with(0)
-            ->will($this->returnValue(new Entry('foo', array(
-                    'sAMAccountName' => array('foo'),
-                )
+            ->will($this->returnValue(new Entry('foo', [
+                    'sAMAccountName' => ['foo'],
+                ]
             )))
         ;
         $result
@@ -229,7 +229,7 @@ public function testLoadUserByUsernameFailsIfEntryHasNoPasswordAttribute()
             ->will($this->returnValue($query))
         ;
 
-        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com', null, null, array(), 'sAMAccountName', '({uid_key}={username})', 'userpassword');
+        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com', null, null, [], 'sAMAccountName', '({uid_key}={username})', 'userpassword');
         $this->assertInstanceOf(
             'Symfony\Component\Security\Core\User\User',
             $provider->loadUserByUsername('foo')
@@ -250,9 +250,9 @@ public function testLoadUserByUsernameIsSuccessfulWithoutPasswordAttribute()
             ->expects($this->once())
             ->method('offsetGet')
             ->with(0)
-            ->will($this->returnValue(new Entry('foo', array(
-                    'sAMAccountName' => array('foo'),
-                )
+            ->will($this->returnValue(new Entry('foo', [
+                    'sAMAccountName' => ['foo'],
+                ]
             )))
         ;
         $result
@@ -292,9 +292,9 @@ public function testLoadUserByUsernameIsSuccessfulWithoutPasswordAttributeAndWro
             ->expects($this->once())
             ->method('offsetGet')
             ->with(0)
-            ->will($this->returnValue(new Entry('foo', array(
-                    'sAMAccountName' => array('foo'),
-                )
+            ->will($this->returnValue(new Entry('foo', [
+                    'sAMAccountName' => ['foo'],
+                ]
             )))
         ;
         $result
@@ -331,10 +331,10 @@ public function testLoadUserByUsernameIsSuccessfulWithPasswordAttribute()
             ->expects($this->once())
             ->method('offsetGet')
             ->with(0)
-            ->will($this->returnValue(new Entry('foo', array(
-                    'sAMAccountName' => array('foo'),
-                    'userpassword' => array('bar'),
-                )
+            ->will($this->returnValue(new Entry('foo', [
+                    'sAMAccountName' => ['foo'],
+                    'userpassword' => ['bar'],
+                ]
             )))
         ;
         $result
@@ -353,7 +353,7 @@ public function testLoadUserByUsernameIsSuccessfulWithPasswordAttribute()
             ->will($this->returnValue($query))
         ;
 
-        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com', null, null, array(), 'sAMAccountName', '({uid_key}={username})', 'userpassword');
+        $provider = new LdapUserProvider($ldap, 'ou=MyBusiness,dc=symfony,dc=com', null, null, [], 'sAMAccountName', '({uid_key}={username})', 'userpassword');
         $this->assertInstanceOf(
             'Symfony\Component\Security\Core\User\User',
             $provider->loadUserByUsername('foo')
diff --git a/src/Symfony/Component/Security/Core/Tests/User/UserTest.php b/src/Symfony/Component/Security/Core/Tests/User/UserTest.php
index fa9f33107d90..9a8d65d537ca 100644
--- a/src/Symfony/Component/Security/Core/Tests/User/UserTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/User/UserTest.php
@@ -27,10 +27,10 @@ public function testConstructorException()
     public function testGetRoles()
     {
         $user = new User('fabien', 'superpass');
-        $this->assertEquals(array(), $user->getRoles());
+        $this->assertEquals([], $user->getRoles());
 
-        $user = new User('fabien', 'superpass', array('ROLE_ADMIN'));
-        $this->assertEquals(array('ROLE_ADMIN'), $user->getRoles());
+        $user = new User('fabien', 'superpass', ['ROLE_ADMIN']);
+        $this->assertEquals(['ROLE_ADMIN'], $user->getRoles());
     }
 
     public function testGetPassword()
@@ -56,7 +56,7 @@ public function testIsAccountNonExpired()
         $user = new User('fabien', 'superpass');
         $this->assertTrue($user->isAccountNonExpired());
 
-        $user = new User('fabien', 'superpass', array(), true, false);
+        $user = new User('fabien', 'superpass', [], true, false);
         $this->assertFalse($user->isAccountNonExpired());
     }
 
@@ -65,7 +65,7 @@ public function testIsCredentialsNonExpired()
         $user = new User('fabien', 'superpass');
         $this->assertTrue($user->isCredentialsNonExpired());
 
-        $user = new User('fabien', 'superpass', array(), true, true, false);
+        $user = new User('fabien', 'superpass', [], true, true, false);
         $this->assertFalse($user->isCredentialsNonExpired());
     }
 
@@ -74,7 +74,7 @@ public function testIsAccountNonLocked()
         $user = new User('fabien', 'superpass');
         $this->assertTrue($user->isAccountNonLocked());
 
-        $user = new User('fabien', 'superpass', array(), true, true, true, false);
+        $user = new User('fabien', 'superpass', [], true, true, true, false);
         $this->assertFalse($user->isAccountNonLocked());
     }
 
@@ -83,7 +83,7 @@ public function testIsEnabled()
         $user = new User('fabien', 'superpass');
         $this->assertTrue($user->isEnabled());
 
-        $user = new User('fabien', 'superpass', array(), false);
+        $user = new User('fabien', 'superpass', [], false);
         $this->assertFalse($user->isEnabled());
     }
 
diff --git a/src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php b/src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php
index 22bed799fb5d..24c2c7adda18 100644
--- a/src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Validator/Constraints/UserPasswordValidatorTest.php
@@ -58,9 +58,9 @@ protected function setUp()
 
     public function testPasswordIsValid()
     {
-        $constraint = new UserPassword(array(
+        $constraint = new UserPassword([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->encoder->expects($this->once())
             ->method('isPasswordValid')
@@ -74,9 +74,9 @@ public function testPasswordIsValid()
 
     public function testPasswordIsNotValid()
     {
-        $constraint = new UserPassword(array(
+        $constraint = new UserPassword([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->encoder->expects($this->once())
             ->method('isPasswordValid')
@@ -94,9 +94,9 @@ public function testPasswordIsNotValid()
      */
     public function testEmptyPasswordsAreNotValid($password)
     {
-        $constraint = new UserPassword(array(
+        $constraint = new UserPassword([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($password, $constraint);
 
@@ -106,10 +106,10 @@ public function testEmptyPasswordsAreNotValid($password)
 
     public function emptyPasswordData()
     {
-        return array(
-            array(null),
-            array(''),
-        );
+        return [
+            [null],
+            [''],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/User/InMemoryUserProvider.php b/src/Symfony/Component/Security/Core/User/InMemoryUserProvider.php
index 199d95f90c8d..a5ad3f10f59e 100644
--- a/src/Symfony/Component/Security/Core/User/InMemoryUserProvider.php
+++ b/src/Symfony/Component/Security/Core/User/InMemoryUserProvider.php
@@ -32,12 +32,12 @@ class InMemoryUserProvider implements UserProviderInterface
      *
      * @param array $users An array of users
      */
-    public function __construct(array $users = array())
+    public function __construct(array $users = [])
     {
         foreach ($users as $username => $attributes) {
             $password = isset($attributes['password']) ? $attributes['password'] : null;
             $enabled = isset($attributes['enabled']) ? $attributes['enabled'] : true;
-            $roles = isset($attributes['roles']) ? $attributes['roles'] : array();
+            $roles = isset($attributes['roles']) ? $attributes['roles'] : [];
             $user = new User($username, $password, $roles, $enabled, true, true, true);
 
             $this->createUser($user);
diff --git a/src/Symfony/Component/Security/Core/User/LdapUserProvider.php b/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
index e208c96fa00f..f840024a813e 100644
--- a/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
+++ b/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
@@ -45,7 +45,7 @@ class LdapUserProvider implements UserProviderInterface
      * @param string        $filter
      * @param string        $passwordAttribute
      */
-    public function __construct(LdapInterface $ldap, $baseDn, $searchDn = null, $searchPassword = null, array $defaultRoles = array(), $uidKey = 'sAMAccountName', $filter = '({uid_key}={username})', $passwordAttribute = null)
+    public function __construct(LdapInterface $ldap, $baseDn, $searchDn = null, $searchPassword = null, array $defaultRoles = [], $uidKey = 'sAMAccountName', $filter = '({uid_key}={username})', $passwordAttribute = null)
     {
         if (null === $uidKey) {
             $uidKey = 'sAMAccountName';
diff --git a/src/Symfony/Component/Security/Core/User/User.php b/src/Symfony/Component/Security/Core/User/User.php
index bc81f7ffa795..5998ec296631 100644
--- a/src/Symfony/Component/Security/Core/User/User.php
+++ b/src/Symfony/Component/Security/Core/User/User.php
@@ -28,7 +28,7 @@ final class User implements AdvancedUserInterface
     private $accountNonLocked;
     private $roles;
 
-    public function __construct($username, $password, array $roles = array(), $enabled = true, $userNonExpired = true, $credentialsNonExpired = true, $userNonLocked = true)
+    public function __construct($username, $password, array $roles = [], $enabled = true, $userNonExpired = true, $credentialsNonExpired = true, $userNonLocked = true)
     {
         if ('' === $username || null === $username) {
             throw new \InvalidArgumentException('The username cannot be empty.');
diff --git a/src/Symfony/Component/Security/Csrf/Tests/CsrfTokenManagerTest.php b/src/Symfony/Component/Security/Csrf/Tests/CsrfTokenManagerTest.php
index 2ec282144cfe..b954fc037b90 100644
--- a/src/Symfony/Component/Security/Csrf/Tests/CsrfTokenManagerTest.php
+++ b/src/Symfony/Component/Security/Csrf/Tests/CsrfTokenManagerTest.php
@@ -163,7 +163,7 @@ public function testNamespaced()
         $storage = $this->getMockBuilder('Symfony\Component\Security\Csrf\TokenStorage\TokenStorageInterface')->getMock();
 
         $requestStack = new RequestStack();
-        $requestStack->push(new Request(array(), array(), array(), array(), array(), array('HTTPS' => 'on')));
+        $requestStack->push(new Request([], [], [], [], [], ['HTTPS' => 'on']));
 
         $manager = new CsrfTokenManager($generator, $storage, null, $requestStack);
 
@@ -173,41 +173,41 @@ public function testNamespaced()
 
     public function getManagerGeneratorAndStorage()
     {
-        $data = array();
+        $data = [];
 
         list($generator, $storage) = $this->getGeneratorAndStorage();
-        $data[] = array('', new CsrfTokenManager($generator, $storage, ''), $storage, $generator);
+        $data[] = ['', new CsrfTokenManager($generator, $storage, ''), $storage, $generator];
 
         list($generator, $storage) = $this->getGeneratorAndStorage();
-        $data[] = array('https-', new CsrfTokenManager($generator, $storage), $storage, $generator);
+        $data[] = ['https-', new CsrfTokenManager($generator, $storage), $storage, $generator];
 
         list($generator, $storage) = $this->getGeneratorAndStorage();
-        $data[] = array('aNamespace-', new CsrfTokenManager($generator, $storage, 'aNamespace-'), $storage, $generator);
+        $data[] = ['aNamespace-', new CsrfTokenManager($generator, $storage, 'aNamespace-'), $storage, $generator];
 
         $requestStack = new RequestStack();
-        $requestStack->push(new Request(array(), array(), array(), array(), array(), array('HTTPS' => 'on')));
+        $requestStack->push(new Request([], [], [], [], [], ['HTTPS' => 'on']));
         list($generator, $storage) = $this->getGeneratorAndStorage();
-        $data[] = array('https-', new CsrfTokenManager($generator, $storage, $requestStack), $storage, $generator);
+        $data[] = ['https-', new CsrfTokenManager($generator, $storage, $requestStack), $storage, $generator];
 
         list($generator, $storage) = $this->getGeneratorAndStorage();
-        $data[] = array('generated-', new CsrfTokenManager($generator, $storage, function () {
+        $data[] = ['generated-', new CsrfTokenManager($generator, $storage, function () {
             return 'generated-';
-        }), $storage, $generator);
+        }), $storage, $generator];
 
         $requestStack = new RequestStack();
         $requestStack->push(new Request());
         list($generator, $storage) = $this->getGeneratorAndStorage();
-        $data[] = array('', new CsrfTokenManager($generator, $storage, $requestStack), $storage, $generator);
+        $data[] = ['', new CsrfTokenManager($generator, $storage, $requestStack), $storage, $generator];
 
         return $data;
     }
 
     private function getGeneratorAndStorage()
     {
-        return array(
+        return [
             $this->getMockBuilder('Symfony\Component\Security\Csrf\TokenGenerator\TokenGeneratorInterface')->getMock(),
             $this->getMockBuilder('Symfony\Component\Security\Csrf\TokenStorage\TokenStorageInterface')->getMock(),
-        );
+        ];
     }
 
     protected function setUp()
diff --git a/src/Symfony/Component/Security/Csrf/Tests/TokenStorage/NativeSessionTokenStorageTest.php b/src/Symfony/Component/Security/Csrf/Tests/TokenStorage/NativeSessionTokenStorageTest.php
index c8d31093ceff..86fb6e6b9cac 100644
--- a/src/Symfony/Component/Security/Csrf/Tests/TokenStorage/NativeSessionTokenStorageTest.php
+++ b/src/Symfony/Component/Security/Csrf/Tests/TokenStorage/NativeSessionTokenStorageTest.php
@@ -31,7 +31,7 @@ class NativeSessionTokenStorageTest extends TestCase
 
     protected function setUp()
     {
-        $_SESSION = array();
+        $_SESSION = [];
 
         $this->storage = new NativeSessionTokenStorage(self::SESSION_NAMESPACE);
     }
@@ -40,7 +40,7 @@ public function testStoreTokenInClosedSession()
     {
         $this->storage->setToken('token_id', 'TOKEN');
 
-        $this->assertSame(array(self::SESSION_NAMESPACE => array('token_id' => 'TOKEN')), $_SESSION);
+        $this->assertSame([self::SESSION_NAMESPACE => ['token_id' => 'TOKEN']], $_SESSION);
     }
 
     public function testStoreTokenInClosedSessionWithExistingSessionId()
@@ -52,7 +52,7 @@ public function testStoreTokenInClosedSessionWithExistingSessionId()
         $this->storage->setToken('token_id', 'TOKEN');
 
         $this->assertSame(PHP_SESSION_ACTIVE, session_status());
-        $this->assertSame(array(self::SESSION_NAMESPACE => array('token_id' => 'TOKEN')), $_SESSION);
+        $this->assertSame([self::SESSION_NAMESPACE => ['token_id' => 'TOKEN']], $_SESSION);
     }
 
     public function testStoreTokenInActiveSession()
@@ -61,7 +61,7 @@ public function testStoreTokenInActiveSession()
 
         $this->storage->setToken('token_id', 'TOKEN');
 
-        $this->assertSame(array(self::SESSION_NAMESPACE => array('token_id' => 'TOKEN')), $_SESSION);
+        $this->assertSame([self::SESSION_NAMESPACE => ['token_id' => 'TOKEN']], $_SESSION);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php b/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
index 2df09577bf0a..ed21e9974e0f 100644
--- a/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
@@ -67,7 +67,7 @@ public function __construct(GuardAuthenticatorHandler $guardHandler, Authenticat
     public function handle(GetResponseEvent $event)
     {
         if (null !== $this->logger) {
-            $context = array('firewall_key' => $this->providerKey);
+            $context = ['firewall_key' => $this->providerKey];
 
             if ($this->guardAuthenticators instanceof \Countable || \is_array($this->guardAuthenticators)) {
                 $context['authenticators'] = \count($this->guardAuthenticators);
@@ -85,7 +85,7 @@ public function handle(GetResponseEvent $event)
 
             if ($event->hasResponse()) {
                 if (null !== $this->logger) {
-                    $this->logger->debug('The "{authenticator}" authenticator set the response. Any later authenticator will not be called', array('authenticator' => \get_class($guardAuthenticator)));
+                    $this->logger->debug('The "{authenticator}" authenticator set the response. Any later authenticator will not be called', ['authenticator' => \get_class($guardAuthenticator)]);
                 }
 
                 break;
@@ -100,12 +100,12 @@ private function executeGuardAuthenticator($uniqueGuardKey, GuardAuthenticatorIn
             // abort the execution of the authenticator if it doesn't support the request
             if ($guardAuthenticator instanceof AuthenticatorInterface) {
                 if (null !== $this->logger) {
-                    $this->logger->debug('Checking support on guard authenticator.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                    $this->logger->debug('Checking support on guard authenticator.', ['firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)]);
                 }
 
                 if (!$guardAuthenticator->supports($request)) {
                     if (null !== $this->logger) {
-                        $this->logger->debug('Guard authenticator does not support the request.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                        $this->logger->debug('Guard authenticator does not support the request.', ['firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)]);
                     }
 
                     return;
@@ -119,7 +119,7 @@ private function executeGuardAuthenticator($uniqueGuardKey, GuardAuthenticatorIn
             }
 
             if (null !== $this->logger) {
-                $this->logger->debug('Calling getCredentials() on guard authenticator.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Calling getCredentials() on guard authenticator.', ['firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             // allow the authenticator to fetch authentication info from the request
@@ -144,14 +144,14 @@ private function executeGuardAuthenticator($uniqueGuardKey, GuardAuthenticatorIn
             $token = new PreAuthenticationGuardToken($credentials, $uniqueGuardKey);
 
             if (null !== $this->logger) {
-                $this->logger->debug('Passing guard token information to the GuardAuthenticationProvider', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Passing guard token information to the GuardAuthenticationProvider', ['firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)]);
             }
             // pass the token into the AuthenticationManager system
             // this indirectly calls GuardAuthenticationProvider::authenticate()
             $token = $this->authenticationManager->authenticate($token);
 
             if (null !== $this->logger) {
-                $this->logger->info('Guard authentication successful!', array('token' => $token, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->info('Guard authentication successful!', ['token' => $token, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             // sets the token on the token storage, etc
@@ -160,7 +160,7 @@ private function executeGuardAuthenticator($uniqueGuardKey, GuardAuthenticatorIn
             // oh no! Authentication failed!
 
             if (null !== $this->logger) {
-                $this->logger->info('Guard authentication failed.', array('exception' => $e, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->info('Guard authentication failed.', ['exception' => $e, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             $response = $this->guardHandler->handleAuthenticationFailure($e, $request, $guardAuthenticator, $this->providerKey);
@@ -176,13 +176,13 @@ private function executeGuardAuthenticator($uniqueGuardKey, GuardAuthenticatorIn
         $response = $this->guardHandler->handleAuthenticationSuccess($token, $request, $guardAuthenticator, $this->providerKey);
         if ($response instanceof Response) {
             if (null !== $this->logger) {
-                $this->logger->debug('Guard authenticator set success response.', array('response' => $response, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Guard authenticator set success response.', ['response' => $response, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             $event->setResponse($response);
         } else {
             if (null !== $this->logger) {
-                $this->logger->debug('Guard authenticator set no success response: request continues.', array('authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Guard authenticator set no success response: request continues.', ['authenticator' => \get_class($guardAuthenticator)]);
             }
         }
 
@@ -206,7 +206,7 @@ private function triggerRememberMe(GuardAuthenticatorInterface $guardAuthenticat
     {
         if (null === $this->rememberMeServices) {
             if (null !== $this->logger) {
-                $this->logger->debug('Remember me skipped: it is not configured for the firewall.', array('authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Remember me skipped: it is not configured for the firewall.', ['authenticator' => \get_class($guardAuthenticator)]);
             }
 
             return;
@@ -214,7 +214,7 @@ private function triggerRememberMe(GuardAuthenticatorInterface $guardAuthenticat
 
         if (!$guardAuthenticator->supportsRememberMe()) {
             if (null !== $this->logger) {
-                $this->logger->debug('Remember me skipped: your authenticator does not support it.', array('authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Remember me skipped: your authenticator does not support it.', ['authenticator' => \get_class($guardAuthenticator)]);
             }
 
             return;
diff --git a/src/Symfony/Component/Security/Guard/GuardAuthenticatorHandler.php b/src/Symfony/Component/Security/Guard/GuardAuthenticatorHandler.php
index b962b7f13333..1cdcf6b967ed 100644
--- a/src/Symfony/Component/Security/Guard/GuardAuthenticatorHandler.php
+++ b/src/Symfony/Component/Security/Guard/GuardAuthenticatorHandler.php
@@ -42,7 +42,7 @@ class GuardAuthenticatorHandler
     /**
      * @param array $statelessProviderKeys An array of provider/firewall keys that are "stateless" and so do not need the session migrated on success
      */
-    public function __construct(TokenStorageInterface $tokenStorage, EventDispatcherInterface $eventDispatcher = null, array $statelessProviderKeys = array())
+    public function __construct(TokenStorageInterface $tokenStorage, EventDispatcherInterface $eventDispatcher = null, array $statelessProviderKeys = [])
     {
         $this->tokenStorage = $tokenStorage;
         $this->dispatcher = $eventDispatcher;
diff --git a/src/Symfony/Component/Security/Guard/Tests/Authenticator/FormLoginAuthenticatorTest.php b/src/Symfony/Component/Security/Guard/Tests/Authenticator/FormLoginAuthenticatorTest.php
index db26bc2e28b4..ca472f87bc5e 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Authenticator/FormLoginAuthenticatorTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Authenticator/FormLoginAuthenticatorTest.php
@@ -129,8 +129,8 @@ public function testStartWithSession()
 
     protected function setUp()
     {
-        $this->requestWithoutSession = new Request(array(), array(), array(), array(), array(), array());
-        $this->requestWithSession = new Request(array(), array(), array(), array(), array(), array());
+        $this->requestWithoutSession = new Request([], [], [], [], [], []);
+        $this->requestWithSession = new Request([], [], [], [], [], []);
 
         $session = $this->getMockBuilder('Symfony\\Component\\HttpFoundation\\Session\\SessionInterface')
             ->disableOriginalConstructor()
diff --git a/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php b/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
index e2bcec310e93..fa4e9ef62312 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
@@ -41,7 +41,7 @@ public function testHandleSuccess()
         $authenticateToken = $this->getMockBuilder(TokenInterface::class)->getMock();
         $providerKey = 'my_firewall';
 
-        $credentials = array('username' => 'weaverryan', 'password' => 'all_your_base');
+        $credentials = ['username' => 'weaverryan', 'password' => 'all_your_base'];
 
         $authenticator
             ->expects($this->once())
@@ -77,7 +77,7 @@ public function testHandleSuccess()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -117,7 +117,7 @@ public function testHandleSuccessStopsAfterResponseIsSet()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             'my_firewall',
-            array($authenticator1, $authenticator2),
+            [$authenticator1, $authenticator2],
             $this->logger
         );
 
@@ -139,7 +139,7 @@ public function testHandleSuccessWithRememberMe()
             ->expects($this->once())
             ->method('getCredentials')
             ->with($this->equalTo($this->request))
-            ->will($this->returnValue(array('username' => 'anything_not_empty')));
+            ->will($this->returnValue(['username' => 'anything_not_empty']));
 
         $this->authenticationManager
             ->expects($this->once())
@@ -156,7 +156,7 @@ public function testHandleSuccessWithRememberMe()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -201,7 +201,7 @@ public function testHandleCatchesAuthenticationException()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -234,7 +234,7 @@ public function testLegacyInterfaceNullCredentials()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticatorA),
+            [$authenticatorA],
             $this->logger
         );
 
@@ -250,7 +250,7 @@ public function testLegacyInterfaceKeepsWorking()
         $authenticateToken = $this->getMockBuilder(TokenInterface::class)->getMock();
         $providerKey = 'my_firewall';
 
-        $credentials = array('username' => 'weaverryan', 'password' => 'all_your_base');
+        $credentials = ['username' => 'weaverryan', 'password' => 'all_your_base'];
 
         $authenticator
             ->expects($this->once())
@@ -282,7 +282,7 @@ public function testLegacyInterfaceKeepsWorking()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -326,7 +326,7 @@ public function testReturnNullToSkipAuth()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticatorA, $authenticatorB),
+            [$authenticatorA, $authenticatorB],
             $this->logger
         );
 
@@ -352,7 +352,7 @@ public function testSupportsReturnFalseSkipAuth()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -382,7 +382,7 @@ public function testReturnNullFromGetCredentials()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -413,7 +413,7 @@ public function testReturnNullFromGetCredentialsTriggersForAbstractGuardAuthenti
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -430,11 +430,11 @@ protected function setUp()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $this->request = new Request(array(), array(), array(), array(), array(), array());
+        $this->request = new Request([], [], [], [], [], []);
 
         $this->event = $this->getMockBuilder('Symfony\Component\HttpKernel\Event\GetResponseEvent')
             ->disableOriginalConstructor()
-            ->setMethods(array('getRequest'))
+            ->setMethods(['getRequest'])
             ->getMock();
         $this->event
             ->expects($this->any())
diff --git a/src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php b/src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php
index 6f0bb6248aca..9950426de9e2 100644
--- a/src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/GuardAuthenticatorHandlerTest.php
@@ -110,11 +110,11 @@ public function testHandleAuthenticationClearsToken($tokenClass, $tokenProviderK
 
     public function getTokenClearingTests()
     {
-        $tests = array();
+        $tests = [];
         // correct token class and matching firewall => clear the token
-        $tests[] = array('Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken', 'the_firewall_key', 'the_firewall_key');
-        $tests[] = array('Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken', 'the_firewall_key', 'different_key');
-        $tests[] = array('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken', 'the_firewall_key', 'the_firewall_key');
+        $tests[] = ['Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken', 'the_firewall_key', 'the_firewall_key'];
+        $tests[] = ['Symfony\Component\Security\Guard\Token\PostAuthenticationGuardToken', 'the_firewall_key', 'different_key'];
+        $tests[] = ['Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken', 'the_firewall_key', 'the_firewall_key'];
 
         return $tests;
     }
@@ -151,7 +151,7 @@ public function testSessionStrategyIsNotCalledWhenStateless()
         $this->sessionStrategy->expects($this->never())
             ->method('onAuthentication');
 
-        $handler = new GuardAuthenticatorHandler($this->tokenStorage, $this->dispatcher, array('some_provider_key'));
+        $handler = new GuardAuthenticatorHandler($this->tokenStorage, $this->dispatcher, ['some_provider_key']);
         $handler->setSessionAuthenticationStrategy($this->sessionStrategy);
         $handler->authenticateWithToken($this->token, $this->request, 'some_provider_key');
     }
@@ -161,7 +161,7 @@ protected function setUp()
         $this->tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $this->dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
         $this->token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
-        $this->request = new Request(array(), array(), array(), array(), array(), array());
+        $this->request = new Request([], [], [], [], [], []);
         $this->sessionStrategy = $this->getMockBuilder('Symfony\Component\Security\Http\Session\SessionAuthenticationStrategyInterface')->getMock();
         $this->guardAuthenticator = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
     }
diff --git a/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php b/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
index 04c16dfd4d14..a6636dd2f7f3 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
@@ -35,7 +35,7 @@ public function testAuthenticate()
         $authenticatorA = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
         $authenticatorB = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
         $authenticatorC = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
-        $authenticators = array($authenticatorA, $authenticatorB, $authenticatorC);
+        $authenticators = [$authenticatorA, $authenticatorB, $authenticatorC];
 
         // called 2 times - for authenticator A and B (stops on B because of match)
         $this->preAuthenticationToken->expects($this->exactly(2))
@@ -43,10 +43,10 @@ public function testAuthenticate()
             // it will return the "1" index, which will match authenticatorB
             ->will($this->returnValue('my_cool_firewall_1'));
 
-        $enteredCredentials = array(
+        $enteredCredentials = [
             'username' => '_weaverryan_test_user',
             'password' => 'guard_auth_ftw',
-        );
+        ];
         $this->preAuthenticationToken->expects($this->atLeastOnce())
             ->method('getCredentials')
             ->will($this->returnValue($enteredCredentials));
@@ -97,7 +97,7 @@ public function testLegacyAuthenticate()
         $authenticatorA = $this->getMockBuilder('Symfony\Component\Security\Guard\GuardAuthenticatorInterface')->getMock();
         $authenticatorB = $this->getMockBuilder('Symfony\Component\Security\Guard\GuardAuthenticatorInterface')->getMock();
         $authenticatorC = $this->getMockBuilder('Symfony\Component\Security\Guard\GuardAuthenticatorInterface')->getMock();
-        $authenticators = array($authenticatorA, $authenticatorB, $authenticatorC);
+        $authenticators = [$authenticatorA, $authenticatorB, $authenticatorC];
 
         // called 2 times - for authenticator A and B (stops on B because of match)
         $this->preAuthenticationToken->expects($this->exactly(2))
@@ -105,10 +105,10 @@ public function testLegacyAuthenticate()
             // it will return the "1" index, which will match authenticatorB
             ->will($this->returnValue('my_cool_firewall_1'));
 
-        $enteredCredentials = array(
+        $enteredCredentials = [
             'username' => '_weaverryan_test_user',
             'password' => 'guard_auth_ftw',
-        );
+        ];
         $this->preAuthenticationToken->expects($this->atLeastOnce())
             ->method('getCredentials')
             ->will($this->returnValue($enteredCredentials));
@@ -178,7 +178,7 @@ public function testCheckCredentialsReturningNonTrueFailsAuthentication()
             // authentication fails :(
             ->will($this->returnValue(null));
 
-        $provider = new GuardAuthenticationProvider(array($authenticator), $this->userProvider, $providerKey, $this->userChecker);
+        $provider = new GuardAuthenticationProvider([$authenticator], $this->userProvider, $providerKey, $this->userChecker);
         $provider->authenticate($this->preAuthenticationToken);
     }
 
@@ -192,10 +192,10 @@ public function testGuardWithNoLongerAuthenticatedTriggersLogout()
         // create a token and mark it as NOT authenticated anymore
         // this mimics what would happen if a user "changed" between request
         $mockedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
-        $token = new PostAuthenticationGuardToken($mockedUser, $providerKey, array('ROLE_USER'));
+        $token = new PostAuthenticationGuardToken($mockedUser, $providerKey, ['ROLE_USER']);
         $token->setAuthenticated(false);
 
-        $provider = new GuardAuthenticationProvider(array(), $this->userProvider, $providerKey, $this->userChecker);
+        $provider = new GuardAuthenticationProvider([], $this->userProvider, $providerKey, $this->userChecker);
         $actualToken = $provider->authenticate($token);
     }
 
@@ -203,7 +203,7 @@ public function testSupportsChecksGuardAuthenticatorsTokenOrigin()
     {
         $authenticatorA = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
         $authenticatorB = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
-        $authenticators = array($authenticatorA, $authenticatorB);
+        $authenticators = [$authenticatorA, $authenticatorB];
 
         $mockedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $provider = new GuardAuthenticationProvider($authenticators, $this->userProvider, 'first_firewall', $this->userChecker);
@@ -224,7 +224,7 @@ public function testSupportsChecksGuardAuthenticatorsTokenOrigin()
     public function testAuthenticateFailsOnNonOriginatingToken()
     {
         $authenticatorA = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
-        $authenticators = array($authenticatorA);
+        $authenticators = [$authenticatorA];
 
         $mockedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $provider = new GuardAuthenticationProvider($authenticators, $this->userProvider, 'first_firewall', $this->userChecker);
diff --git a/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php b/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
index f566b7124235..ca8549783fdb 100644
--- a/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
+++ b/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
@@ -58,7 +58,7 @@ public function __construct(UserInterface $user, $providerKey, array $roles)
      */
     public function getCredentials()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -76,7 +76,7 @@ public function getProviderKey()
      */
     public function serialize()
     {
-        return serialize(array($this->providerKey, parent::serialize()));
+        return serialize([$this->providerKey, parent::serialize()]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Guard/Token/PreAuthenticationGuardToken.php b/src/Symfony/Component/Security/Guard/Token/PreAuthenticationGuardToken.php
index e1b39417d78e..b9aa53bf2a49 100644
--- a/src/Symfony/Component/Security/Guard/Token/PreAuthenticationGuardToken.php
+++ b/src/Symfony/Component/Security/Guard/Token/PreAuthenticationGuardToken.php
@@ -36,7 +36,7 @@ public function __construct($credentials, $guardProviderKey)
         $this->credentials = $credentials;
         $this->guardProviderKey = $guardProviderKey;
 
-        parent::__construct(array());
+        parent::__construct([]);
 
         // never authenticated
         parent::setAuthenticated(false);
diff --git a/src/Symfony/Component/Security/Http/AccessMap.php b/src/Symfony/Component/Security/Http/AccessMap.php
index 2f3757336eda..04c06da10768 100644
--- a/src/Symfony/Component/Security/Http/AccessMap.php
+++ b/src/Symfony/Component/Security/Http/AccessMap.php
@@ -22,16 +22,16 @@
  */
 class AccessMap implements AccessMapInterface
 {
-    private $map = array();
+    private $map = [];
 
     /**
      * @param RequestMatcherInterface $requestMatcher A RequestMatcherInterface instance
      * @param array                   $attributes     An array of attributes to pass to the access decision manager (like roles)
      * @param string|null             $channel        The channel to enforce (http, https, or null)
      */
-    public function add(RequestMatcherInterface $requestMatcher, array $attributes = array(), $channel = null)
+    public function add(RequestMatcherInterface $requestMatcher, array $attributes = [], $channel = null)
     {
-        $this->map[] = array($requestMatcher, $attributes, $channel);
+        $this->map[] = [$requestMatcher, $attributes, $channel];
     }
 
     /**
@@ -41,10 +41,10 @@ public function getPatterns(Request $request)
     {
         foreach ($this->map as $elements) {
             if (null === $elements[0] || $elements[0]->matches($request)) {
-                return array($elements[1], $elements[2]);
+                return [$elements[1], $elements[2]];
             }
         }
 
-        return array(null, null);
+        return [null, null];
     }
 }
diff --git a/src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationFailureHandler.php b/src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationFailureHandler.php
index ad1e4cb1940e..cca62fd4c5c7 100644
--- a/src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationFailureHandler.php
+++ b/src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationFailureHandler.php
@@ -35,14 +35,14 @@ class DefaultAuthenticationFailureHandler implements AuthenticationFailureHandle
     protected $httpUtils;
     protected $logger;
     protected $options;
-    protected $defaultOptions = array(
+    protected $defaultOptions = [
         'failure_path' => null,
         'failure_forward' => false,
         'login_path' => '/login',
         'failure_path_parameter' => '_failure_path',
-    );
+    ];
 
-    public function __construct(HttpKernelInterface $httpKernel, HttpUtils $httpUtils, array $options = array(), LoggerInterface $logger = null)
+    public function __construct(HttpKernelInterface $httpKernel, HttpUtils $httpUtils, array $options = [], LoggerInterface $logger = null)
     {
         $this->httpKernel = $httpKernel;
         $this->httpUtils = $httpUtils;
@@ -80,7 +80,7 @@ public function onAuthenticationFailure(Request $request, AuthenticationExceptio
 
         if ($this->options['failure_forward']) {
             if (null !== $this->logger) {
-                $this->logger->debug('Authentication failure, forward triggered.', array('failure_path' => $this->options['failure_path']));
+                $this->logger->debug('Authentication failure, forward triggered.', ['failure_path' => $this->options['failure_path']]);
             }
 
             $subRequest = $this->httpUtils->createRequest($request, $this->options['failure_path']);
@@ -90,7 +90,7 @@ public function onAuthenticationFailure(Request $request, AuthenticationExceptio
         }
 
         if (null !== $this->logger) {
-            $this->logger->debug('Authentication failure, redirect triggered.', array('failure_path' => $this->options['failure_path']));
+            $this->logger->debug('Authentication failure, redirect triggered.', ['failure_path' => $this->options['failure_path']]);
         }
 
         $request->getSession()->set(Security::AUTHENTICATION_ERROR, $exception);
diff --git a/src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationSuccessHandler.php b/src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationSuccessHandler.php
index 38d16a6f7584..8b65dc9ee592 100644
--- a/src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationSuccessHandler.php
+++ b/src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationSuccessHandler.php
@@ -31,19 +31,19 @@ class DefaultAuthenticationSuccessHandler implements AuthenticationSuccessHandle
     protected $httpUtils;
     protected $options;
     protected $providerKey;
-    protected $defaultOptions = array(
+    protected $defaultOptions = [
         'always_use_default_target_path' => false,
         'default_target_path' => '/',
         'login_path' => '/login',
         'target_path_parameter' => '_target_path',
         'use_referer' => false,
-    );
+    ];
 
     /**
      * @param HttpUtils $httpUtils
      * @param array     $options   Options for processing a successful authentication attempt
      */
-    public function __construct(HttpUtils $httpUtils, array $options = array())
+    public function __construct(HttpUtils $httpUtils, array $options = [])
     {
         $this->httpUtils = $httpUtils;
         $this->setOptions($options);
diff --git a/src/Symfony/Component/Security/Http/Authentication/SimpleAuthenticationHandler.php b/src/Symfony/Component/Security/Http/Authentication/SimpleAuthenticationHandler.php
index 484e60fe6e13..1d03e23a8568 100644
--- a/src/Symfony/Component/Security/Http/Authentication/SimpleAuthenticationHandler.php
+++ b/src/Symfony/Component/Security/Http/Authentication/SimpleAuthenticationHandler.php
@@ -55,7 +55,7 @@ public function onAuthenticationSuccess(Request $request, TokenInterface $token)
     {
         if ($this->simpleAuthenticator instanceof AuthenticationSuccessHandlerInterface) {
             if ($this->logger) {
-                $this->logger->debug('Selected an authentication success handler.', array('handler' => \get_class($this->simpleAuthenticator)));
+                $this->logger->debug('Selected an authentication success handler.', ['handler' => \get_class($this->simpleAuthenticator)]);
             }
 
             $response = $this->simpleAuthenticator->onAuthenticationSuccess($request, $token);
@@ -82,7 +82,7 @@ public function onAuthenticationFailure(Request $request, AuthenticationExceptio
     {
         if ($this->simpleAuthenticator instanceof AuthenticationFailureHandlerInterface) {
             if ($this->logger) {
-                $this->logger->debug('Selected an authentication failure handler.', array('handler' => \get_class($this->simpleAuthenticator)));
+                $this->logger->debug('Selected an authentication failure handler.', ['handler' => \get_class($this->simpleAuthenticator)]);
             }
 
             $response = $this->simpleAuthenticator->onAuthenticationFailure($request, $exception);
diff --git a/src/Symfony/Component/Security/Http/EntryPoint/DigestAuthenticationEntryPoint.php b/src/Symfony/Component/Security/Http/EntryPoint/DigestAuthenticationEntryPoint.php
index b3b7fa5a39dd..160cd927a610 100644
--- a/src/Symfony/Component/Security/Http/EntryPoint/DigestAuthenticationEntryPoint.php
+++ b/src/Symfony/Component/Security/Http/EntryPoint/DigestAuthenticationEntryPoint.php
@@ -58,7 +58,7 @@ public function start(Request $request, AuthenticationException $authException =
         }
 
         if (null !== $this->logger) {
-            $this->logger->debug('WWW-Authenticate header sent.', array('header' => $authenticateHeader));
+            $this->logger->debug('WWW-Authenticate header sent.', ['header' => $authenticateHeader]);
         }
 
         $response = new Response();
diff --git a/src/Symfony/Component/Security/Http/Firewall.php b/src/Symfony/Component/Security/Http/Firewall.php
index a0a2aa8411ca..112604c25c8b 100644
--- a/src/Symfony/Component/Security/Http/Firewall.php
+++ b/src/Symfony/Component/Security/Http/Firewall.php
@@ -99,10 +99,10 @@ public function onKernelFinishRequest(FinishRequestEvent $event)
      */
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array('onKernelRequest', 8),
+        return [
+            KernelEvents::REQUEST => ['onKernelRequest', 8],
             KernelEvents::FINISH_REQUEST => 'onKernelFinishRequest',
-        );
+        ];
     }
 
     protected function handleRequest(GetResponseEvent $event, $listeners)
diff --git a/src/Symfony/Component/Security/Http/Firewall/AbstractAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/AbstractAuthenticationListener.php
index 1227c116cc5c..252669a8395f 100644
--- a/src/Symfony/Component/Security/Http/Firewall/AbstractAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/AbstractAuthenticationListener.php
@@ -78,7 +78,7 @@ abstract class AbstractAuthenticationListener implements ListenerInterface
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = array(), LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null)
+    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = [], LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null)
     {
         if (empty($providerKey)) {
             throw new \InvalidArgumentException('$providerKey must not be empty.');
@@ -90,7 +90,7 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationM
         $this->providerKey = $providerKey;
         $this->successHandler = $successHandler;
         $this->failureHandler = $failureHandler;
-        $this->options = array_merge(array(
+        $this->options = array_merge([
             'check_path' => '/login_check',
             'login_path' => '/login',
             'always_use_default_target_path' => false,
@@ -100,7 +100,7 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationM
             'failure_path' => null,
             'failure_forward' => false,
             'require_previous_session' => true,
-        ), $options);
+        ], $options);
         $this->logger = $logger;
         $this->dispatcher = $dispatcher;
         $this->httpUtils = $httpUtils;
@@ -183,7 +183,7 @@ abstract protected function attemptAuthentication(Request $request);
     private function onFailure(Request $request, AuthenticationException $failed)
     {
         if (null !== $this->logger) {
-            $this->logger->info('Authentication request failed.', array('exception' => $failed));
+            $this->logger->info('Authentication request failed.', ['exception' => $failed]);
         }
 
         $token = $this->tokenStorage->getToken();
@@ -203,7 +203,7 @@ private function onFailure(Request $request, AuthenticationException $failed)
     private function onSuccess(Request $request, TokenInterface $token)
     {
         if (null !== $this->logger) {
-            $this->logger->info('User has been authenticated successfully.', array('username' => $token->getUsername()));
+            $this->logger->info('User has been authenticated successfully.', ['username' => $token->getUsername()]);
         }
 
         $this->tokenStorage->setToken($token);
diff --git a/src/Symfony/Component/Security/Http/Firewall/AbstractPreAuthenticatedListener.php b/src/Symfony/Component/Security/Http/Firewall/AbstractPreAuthenticatedListener.php
index 7e580e7da5c3..3bf597b6da34 100644
--- a/src/Symfony/Component/Security/Http/Firewall/AbstractPreAuthenticatedListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/AbstractPreAuthenticatedListener.php
@@ -66,7 +66,7 @@ final public function handle(GetResponseEvent $event)
         }
 
         if (null !== $this->logger) {
-            $this->logger->debug('Checking current security token.', array('token' => (string) $this->tokenStorage->getToken()));
+            $this->logger->debug('Checking current security token.', ['token' => (string) $this->tokenStorage->getToken()]);
         }
 
         if (null !== $token = $this->tokenStorage->getToken()) {
@@ -76,14 +76,14 @@ final public function handle(GetResponseEvent $event)
         }
 
         if (null !== $this->logger) {
-            $this->logger->debug('Trying to pre-authenticate user.', array('username' => (string) $user));
+            $this->logger->debug('Trying to pre-authenticate user.', ['username' => (string) $user]);
         }
 
         try {
             $token = $this->authenticationManager->authenticate(new PreAuthenticatedToken($user, $credentials, $this->providerKey));
 
             if (null !== $this->logger) {
-                $this->logger->info('Pre-authentication successful.', array('token' => (string) $token));
+                $this->logger->info('Pre-authentication successful.', ['token' => (string) $token]);
             }
 
             $this->migrateSession($request, $token);
@@ -119,7 +119,7 @@ private function clearToken(AuthenticationException $exception)
             $this->tokenStorage->setToken(null);
 
             if (null !== $this->logger) {
-                $this->logger->info('Cleared security token due to an exception.', array('exception' => $exception));
+                $this->logger->info('Cleared security token due to an exception.', ['exception' => $exception]);
             }
         }
     }
diff --git a/src/Symfony/Component/Security/Http/Firewall/AnonymousAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/AnonymousAuthenticationListener.php
index efd92f8c2873..cfa5a9f0a64c 100644
--- a/src/Symfony/Component/Security/Http/Firewall/AnonymousAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/AnonymousAuthenticationListener.php
@@ -49,7 +49,7 @@ public function handle(GetResponseEvent $event)
         }
 
         try {
-            $token = new AnonymousToken($this->secret, 'anon.', array());
+            $token = new AnonymousToken($this->secret, 'anon.', []);
             if (null !== $this->authenticationManager) {
                 $token = $this->authentic
10000
ationManager->authenticate($token);
             }
@@ -61,7 +61,7 @@ public function handle(GetResponseEvent $event)
             }
         } catch (AuthenticationException $failed) {
             if (null !== $this->logger) {
-                $this->logger->info('Anonymous authentication failed.', array('exception' => $failed));
+                $this->logger->info('Anonymous authentication failed.', ['exception' => $failed]);
             }
         }
     }
diff --git a/src/Symfony/Component/Security/Http/Firewall/BasicAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/BasicAuthenticationListener.php
index d1f79c16361a..9329385fd892 100644
--- a/src/Symfony/Component/Security/Http/Firewall/BasicAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/BasicAuthenticationListener.php
@@ -69,7 +69,7 @@ public function handle(GetResponseEvent $event)
         }
 
         if (null !== $this->logger) {
-            $this->logger->info('Basic authentication Authorization header found for user.', array('username' => $username));
+            $this->logger->info('Basic authentication Authorization header found for user.', ['username' => $username]);
         }
 
         try {
@@ -85,7 +85,7 @@ public function handle(GetResponseEvent $event)
             }
 
             if (null !== $this->logger) {
-                $this->logger->info('Basic authentication failed for user.', array('username' => $username, 'exception' => $e));
+                $this->logger->info('Basic authentication failed for user.', ['username' => $username, 'exception' => $e]);
             }
 
             if ($this->ignoreFailure) {
diff --git a/src/Symfony/Component/Security/Http/Firewall/ContextListener.php b/src/Symfony/Component/Security/Http/Firewall/ContextListener.php
index fb279791f8f3..c6b89793e66e 100644
--- a/src/Symfony/Component/Security/Http/Firewall/ContextListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/ContextListener.php
@@ -79,7 +79,7 @@ public function setLogoutOnUserChange($logoutOnUserChange)
     public function handle(GetResponseEvent $event)
     {
         if (!$this->registered && null !== $this->dispatcher && $event->isMasterRequest()) {
-            $this->dispatcher->addListener(KernelEvents::RESPONSE, array($this, 'onKernelResponse'));
+            $this->dispatcher->addListener(KernelEvents::RESPONSE, [$this, 'onKernelResponse']);
             $this->registered = true;
         }
 
@@ -95,17 +95,17 @@ public function handle(GetResponseEvent $event)
         $token = $this->safelyUnserialize($token);
 
         if (null !== $this->logger) {
-            $this->logger->debug('Read existing security token from the session.', array(
+            $this->logger->debug('Read existing security token from the session.', [
                 'key' => $this->sessionKey,
                 'token_class' => \is_object($token) ? \get_class($token) : null,
-            ));
+            ]);
         }
 
         if ($token instanceof TokenInterface) {
             $token = $this->refreshUser($token);
         } elseif (null !== $token) {
             if (null !== $this->logger) {
-                $this->logger->warning('Expected a security token from the session, got something else.', array('key' => $this->sessionKey, 'received' => $token));
+                $this->logger->warning('Expected a security token from the session, got something else.', ['key' => $this->sessionKey, 'received' => $token]);
             }
 
             $token = null;
@@ -129,7 +129,7 @@ public function onKernelResponse(FilterResponseEvent $event)
             return;
         }
 
-        $this->dispatcher->removeListener(KernelEvents::RESPONSE, array($this, 'onKernelResponse'));
+        $this->dispatcher->removeListener(KernelEvents::RESPONSE, [$this, 'onKernelResponse']);
         $this->registered = false;
         $session = $request->getSession();
 
@@ -141,7 +141,7 @@ public function onKernelResponse(FilterResponseEvent $event)
             $session->set($this->sessionKey, serialize($token));
 
             if (null !== $this->logger) {
-                $this->logger->debug('Stored the security token in the session.', array('key' => $this->sessionKey));
+                $this->logger->debug('Stored the security token in the session.', ['key' => $this->sessionKey]);
             }
         }
     }
@@ -179,7 +179,7 @@ protected function refreshUser(TokenInterface $token)
                         $userDeauthenticated = true;
 
                         if (null !== $this->logger) {
-                            $this->logger->debug('Cannot refresh token because user has changed.', array('username' => $refreshedUser->getUsername(), 'provider' => \get_class($provider)));
+                            $this->logger->debug('Cannot refresh token because user has changed.', ['username' => $refreshedUser->getUsername(), 'provider' => \get_class($provider)]);
                         }
 
                         continue;
@@ -191,7 +191,7 @@ protected function refreshUser(TokenInterface $token)
                 $token->setUser($refreshedUser);
 
                 if (null !== $this->logger) {
-                    $context = array('provider' => \get_class($provider), 'username' => $refreshedUser->getUsername());
+                    $context = ['provider' => \get_class($provider), 'username' => $refreshedUser->getUsername()];
 
                     foreach ($token->getRoles() as $role) {
                         if ($role instanceof SwitchUserRole) {
@@ -208,7 +208,7 @@ protected function refreshUser(TokenInterface $token)
                 // let's try the next user provider
             } catch (UsernameNotFoundException $e) {
                 if (null !== $this->logger) {
-                    $this->logger->warning('Username could not be found in the selected user provider.', array('username' => $e->getUsername(), 'provider' => \get_class($provider)));
+                    $this->logger->warning('Username could not be found in the selected user provider.', ['username' => $e->getUsername(), 'provider' => \get_class($provider)]);
                 }
 
                 $userNotFoundByProvider = true;
@@ -234,7 +234,7 @@ private function safelyUnserialize($serializedToken)
     {
         $e = $token = null;
         $prevUnserializeHandler = ini_set('unserialize_callback_func', __CLASS__.'::handleUnserializeCallback');
-        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) use (&$prevErrorHandler) {
+        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$prevErrorHandler) {
             if (__FILE__ === $file) {
                 throw new \UnexpectedValueException($msg, 0x37313bc);
             }
@@ -254,7 +254,7 @@ private function safelyUnserialize($serializedToken)
                 throw $e;
             }
             if ($this->logger) {
-                $this->logger->warning('Failed to unserialize the security token from the session.', array('key' => $this->sessionKey, 'received' => $serializedToken, 'exception' => $e));
+                $this->logger->warning('Failed to unserialize the security token from the session.', ['key' => $this->sessionKey, 'received' => $serializedToken, 'exception' => $e]);
             }
         }
 
diff --git a/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
index 43754b52f1fb..693dbcd586c9 100644
--- a/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
@@ -79,7 +79,7 @@ public function handle(GetResponseEvent $event)
         }
 
         if (null !== $this->logger) {
-            $this->logger->debug('Digest Authorization header received from user agent.', array('header' => $header));
+            $this->logger->debug('Digest Authorization header received from user agent.', ['header' => $header]);
         }
 
         try {
@@ -106,7 +106,7 @@ public function handle(GetResponseEvent $event)
 
         if (!hash_equals($serverDigestMd5, $digestAuth->getResponse())) {
             if (null !== $this->logger) {
-                $this->logger->debug('Unexpected response from the DigestAuth received; is the header returning a clear text passwords?', array('expected' => $serverDigestMd5, 'received' => $digestAuth->getResponse()));
+                $this->logger->debug('Unexpected response from the DigestAuth received; is the header returning a clear text passwords?', ['expected' => $serverDigestMd5, 'received' => $digestAuth->getResponse()]);
             }
 
             $this->fail($event, $request, new BadCredentialsException('Incorrect response'));
@@ -121,7 +121,7 @@ public function handle(GetResponseEvent $event)
         }
 
         if (null !== $this->logger) {
-            $this->logger->info('Digest authentication successful.', array('username' => $digestAuth->getUsername(), 'received' => $digestAuth->getResponse()));
+            $this->logger->info('Digest authentication successful.', ['username' => $digestAuth->getUsername(), 'received' => $digestAuth->getResponse()]);
         }
 
         $token = new UsernamePasswordToken($user, $user->getPassword(), $this->providerKey);
@@ -148,7 +148,7 @@ private function fail(GetResponseEvent $event, Request $request, AuthenticationE
         }
 
         if (null !== $this->logger) {
-            $this->logger->info('Digest authentication failed.', array('exception' => $authException));
+            $this->logger->info('Digest authentication failed.', ['exception' => $authException]);
         }
 
         $event->setResponse($this->authenticationEntryPoint->start($request, $authException));
@@ -169,7 +169,7 @@ private function migrateSession(Request $request, TokenInterface $token)
  */
 class DigestData
 {
-    private $elements = array();
+    private $elements = [];
     private $header;
     private $nonceExpiryTime;
 
@@ -193,12 +193,12 @@ public function getResponse()
 
     public function getUsername()
     {
-        return strtr($this->elements['username'], array('\\"' => '"', '\\\\' => '\\'));
+        return strtr($this->elements['username'], ['\\"' => '"', '\\\\' => '\\']);
     }
 
     public function validateAndDecode($entryPointKey, $expectedRealm)
     {
-        if ($keys = array_diff(array('username', 'realm', 'nonce', 'uri', 'response'), array_keys($this->elements))) {
+        if ($keys = array_diff(['username', 'realm', 'nonce', 'uri', 'response'], array_keys($this->elements))) {
             throw new BadCredentialsException(sprintf('Missing mandatory digest value; received header "%s" (%s)', $this->header, implode(', ', $keys)));
         }
 
diff --git a/src/Symfony/Component/Security/Http/Firewall/ExceptionListener.php b/src/Symfony/Component/Security/Http/Firewall/ExceptionListener.php
index e23d4e2a655b..d10772147153 100644
--- a/src/Symfony/Component/Security/Http/Firewall/ExceptionListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/ExceptionListener.php
@@ -71,7 +71,7 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationT
      */
     public function register(EventDispatcherInterface $dispatcher)
     {
-        $dispatcher->addListener(KernelEvents::EXCEPTION, array($this, 'onKernelException'), 1);
+        $dispatcher->addListener(KernelEvents::EXCEPTION, [$this, 'onKernelException'], 1);
     }
 
     /**
@@ -79,7 +79,7 @@ public function register(EventDispatcherInterface $dispatcher)
      */
     public function unregister(EventDispatcherInterface $dispatcher)
     {
-        $dispatcher->removeListener(KernelEvents::EXCEPTION, array($this, 'onKernelException'));
+        $dispatcher->removeListener(KernelEvents::EXCEPTION, [$this, 'onKernelException']);
     }
 
     /**
@@ -102,7 +102,7 @@ public function onKernelException(GetResponseForExceptionEvent $event)
     private function handleAuthenticationException(GetResponseForExceptionEvent $event, AuthenticationException $exception)
     {
         if (null !== $this->logger) {
-            $this->logger->info('An AuthenticationException was thrown; redirecting to authentication entry point.', array('exception' => $exception));
+            $this->logger->info('An AuthenticationException was thrown; redirecting to authentication entry point.', ['exception' => $exception]);
         }
 
         try {
@@ -120,7 +120,7 @@ private function handleAccessDeniedException(GetResponseForExceptionEvent $event
         $token = $this->tokenStorage->getToken();
         if (!$this->authenticationTrustResolver->isFullFledged($token)) {
             if (null !== $this->logger) {
-                $this->logger->debug('Access denied, the user is not fully authenticated; redirecting to authentication entry point.', array('exception' => $exception));
+                $this->logger->debug('Access denied, the user is not fully authenticated; redirecting to authentication entry point.', ['exception' => $exception]);
             }
 
             try {
@@ -136,7 +136,7 @@ private function handleAccessDeniedException(GetResponseForExceptionEvent $event
         }
 
         if (null !== $this->logger) {
-            $this->logger->debug('Access denied, the user is neither anonymous, nor remember-me.', array('exception' => $exception));
+            $this->logger->debug('Access denied, the user is neither anonymous, nor remember-me.', ['exception' => $exception]);
         }
 
         try {
@@ -155,7 +155,7 @@ private function handleAccessDeniedException(GetResponseForExceptionEvent $event
             }
         } catch (\Exception $e) {
             if (null !== $this->logger) {
-                $this->logger->error('An exception was thrown when handling an AccessDeniedException.', array('exception' => $e));
+                $this->logger->error('An exception was thrown when handling an AccessDeniedException.', ['exception' => $e]);
             }
 
             $event->setException(new \RuntimeException('Exception thrown when handling an exception.', 0, $e));
@@ -165,7 +165,7 @@ private function handleAccessDeniedException(GetResponseForExceptionEvent $event
     private function handleLogoutException(LogoutException $exception)
     {
         if (null !== $this->logger) {
-            $this->logger->info('A LogoutException was thrown.', array('exception' => $exception));
+            $this->logger->info('A LogoutException was thrown.', ['exception' => $exception]);
         }
     }
 
@@ -177,7 +177,7 @@ private function handleLogoutException(LogoutException $exception)
     private function startAuthentication(Request $request, AuthenticationException $authException)
     {
         if (null === $this->authenticationEntryPoint) {
-            throw new HttpException(Response::HTTP_UNAUTHORIZED, $authException->getMessage(), $authException, array(), $authException->getCode());
+            throw new HttpException(Response::HTTP_UNAUTHORIZED, $authException->getMessage(), $authException, [], $authException->getCode());
         }
 
         if (null !== $this->logger) {
@@ -193,7 +193,7 @@ private function startAuthentication(Request $request, AuthenticationException $
             $this->tokenStorage->setToken(null);
 
             if (null !== $this->logger) {
-                $this->logger->info('The security token was removed due to an AccountStatusException.', array('exception' => $authException));
+                $this->logger->info('The security token was removed due to an AccountStatusException.', ['exception' => $authException]);
             }
         }
 
diff --git a/src/Symfony/Component/Security/Http/Firewall/LogoutListener.php b/src/Symfony/Component/Security/Http/Firewall/LogoutListener.php
index 21819ce4a996..6a762e1fbd57 100644
--- a/src/Symfony/Component/Security/Http/Firewall/LogoutListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/LogoutListener.php
@@ -44,18 +44,18 @@ class LogoutListener implements ListenerInterface
      * @param array                          $options          An array of options to process a logout attempt
      * @param CsrfTokenManagerInterface|null $csrfTokenManager A CsrfTokenManagerInterface instance
      */
-    public function __construct(TokenStorageInterface $tokenStorage, HttpUtils $httpUtils, LogoutSuccessHandlerInterface $successHandler, array $options = array(), CsrfTokenManagerInterface $csrfTokenManager = null)
+    public function __construct(TokenStorageInterface $tokenStorage, HttpUtils $httpUtils, LogoutSuccessHandlerInterface $successHandler, array $options = [], CsrfTokenManagerInterface $csrfTokenManager = null)
     {
         $this->tokenStorage = $tokenStorage;
         $this->httpUtils = $httpUtils;
-        $this->options = array_merge(array(
+        $this->options = array_merge([
             'csrf_parameter' => '_csrf_token',
             'csrf_token_id' => 'logout',
             'logout_path' => '/logout',
-        ), $options);
+        ], $options);
         $this->successHandler = $successHandler;
         $this->csrfTokenManager = $csrfTokenManager;
-        $this->handlers = array();
+        $this->handlers = [];
     }
 
     public function addHandler(LogoutHandlerInterface $handler)
diff --git a/src/Symfony/Component/Security/Http/Firewall/RememberMeListener.php b/src/Symfony/Component/Security/Http/Firewall/RememberMeListener.php
index d5c457b5835d..17d40a0e6f82 100644
--- a/src/Symfony/Component/Security/Http/Firewall/RememberMeListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/RememberMeListener.php
@@ -77,7 +77,7 @@ public function handle(GetResponseEvent $event)
                 $this->logger->warning(
                     'The token storage was not populated with remember-me token as the'
                    .' RememberMeServices was not able to create a token from the remember'
-                   .' me information.', array('exception' => $e)
+                   .' me information.', ['exception' => $e]
                 );
             }
 
@@ -110,7 +110,7 @@ public function handle(GetResponseEvent $event)
                 $this->logger->warning(
                     'The token storage was not populated with remember-me token as the'
                    .' AuthenticationManager rejected the AuthenticationToken returned'
-                   .' by the RememberMeServices.', array('exception' => $e)
+                   .' by the RememberMeServices.', ['exception' => $e]
                 );
             }
 
diff --git a/src/Symfony/Component/Security/Http/Firewall/RemoteUserAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/RemoteUserAuthenticationListener.php
index af692ed1635e..fbba95db702a 100644
--- a/src/Symfony/Component/Security/Http/Firewall/RemoteUserAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/RemoteUserAuthenticationListener.php
@@ -44,6 +44,6 @@ protected function getPreAuthenticatedData(Request $request)
             throw new BadCredentialsException(sprintf('User key was not found: %s', $this->userKey));
         }
 
-        return array($request->server->get($this->userKey), null);
+        return [$request->server->get($this->userKey), null];
     }
 }
diff --git a/src/Symfony/Component/Security/Http/Firewall/SimpleFormAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/SimpleFormAuthenticationListener.php
index a0f0863ac7ef..63d73d235aa1 100644
--- a/src/Symfony/Component/Security/Http/Firewall/SimpleFormAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/SimpleFormAuthenticationListener.php
@@ -54,7 +54,7 @@ class SimpleFormAuthenticationListener extends AbstractAuthenticationListener
      *
      * @throws \InvalidArgumentException In case no simple authenticator is provided
      */
-    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = array(), LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null, CsrfTokenManagerInterface $csrfTokenManager = null, SimpleFormAuthenticatorInterface $simpleAuthenticator = null)
+    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = [], LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null, CsrfTokenManagerInterface $csrfTokenManager = null, SimpleFormAuthenticatorInterface $simpleAuthenticator = null)
     {
         if (!$simpleAuthenticator) {
             throw new \InvalidArgumentException('Missing simple authenticator');
@@ -63,13 +63,13 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationM
         $this->simpleAuthenticator = $simpleAuthenticator;
         $this->csrfTokenManager = $csrfTokenManager;
 
-        $options = array_merge(array(
+        $options = array_merge([
             'username_parameter' => '_username',
             'password_parameter' => '_password',
             'csrf_parameter' => '_csrf_token',
             'csrf_token_id' => 'authenticate',
             'post_only' => true,
-        ), $options);
+        ], $options);
 
         parent::__construct($tokenStorage, $authenticationManager, $sessionStrategy, $httpUtils, $providerKey, $successHandler, $failureHandler, $options, $logger, $dispatcher);
     }
diff --git a/src/Symfony/Component/Security/Http/Firewall/SimplePreAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/SimplePreAuthenticationListener.php
index 60e19ee6c288..7e376f5ef0ca 100644
--- a/src/Symfony/Component/Security/Http/Firewall/SimplePreAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/SimplePreAuthenticationListener.php
@@ -83,7 +83,7 @@ public function handle(GetResponseEvent $event)
         $request = $event->getRequest();
 
         if (null !== $this->logger) {
-            $this->logger->info('Attempting SimplePreAuthentication.', array('key' => $this->providerKey, 'authenticator' => \get_class($this->simpleAuthenticator)));
+            $this->logger->info('Attempting SimplePreAuthentication.', ['key' => $this->providerKey, 'authenticator' => \get_class($this->simpleAuthenticator)]);
         }
 
         if (null !== $this->tokenStorage->getToken() && !$this->tokenStorage->getToken() instanceof AnonymousToken) {
@@ -112,7 +112,7 @@ public function handle(GetResponseEvent $event)
             $this->tokenStorage->setToken(null);
 
             if (null !== $this->logger) {
-                $this->logger->info('SimplePreAuthentication request failed.', array('exception' => $e, 'authenticator' => \get_class($this->simpleAuthenticator)));
+                $this->logger->info('SimplePreAuthentication request failed.', ['exception' => $e, 'authenticator' => \get_class($this->simpleAuthenticator)]);
             }
 
             if ($this->simpleAuthenticator instanceof AuthenticationFailureHandlerInterface) {
diff --git a/src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php b/src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php
index 21c0bf7031dc..79193ece79b0 100644
--- a/src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php
@@ -126,7 +126,7 @@ private function attemptSwitchUser(Request $request, $username)
             throw new \LogicException(sprintf('You are already switched to "%s" user.', $token->getUsername()));
         }
 
-        if (false === $this->accessDecisionManager->decide($token, array($this->role))) {
+        if (false === $this->accessDecisionManager->decide($token, [$this->role])) {
             $exception = new AccessDeniedException();
             $exception->setAttributes($this->role);
 
@@ -134,7 +134,7 @@ private function attemptSwitchUser(Request $request, $username)
         }
 
         if (null !== $this->logger) {
-            $this->logger->info('Attempting to switch to user.', array('username' => $username));
+            $this->logger->info('Attempting to switch to user.', ['username' => $username]);
         }
 
         $user = $this->provider->loadUserByUsername($username);
diff --git a/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php
index 11ec77de7d56..aea883a04c78 100644
--- a/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php
@@ -39,15 +39,15 @@ class UsernamePasswordFormAuthenticationListener extends AbstractAuthenticationL
 {
     private $csrfTokenManager;
 
-    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = array(), LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null, CsrfTokenManagerInterface $csrfTokenManager = null)
+    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = [], LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null, CsrfTokenManagerInterface $csrfTokenManager = null)
     {
-        parent::__construct($tokenStorage, $authenticationManager, $sessionStrategy, $httpUtils, $providerKey, $successHandler, $failureHandler, array_merge(array(
+        parent::__construct($tokenStorage, $authenticationManager, $sessionStrategy, $httpUtils, $providerKey, $successHandler, $failureHandler, array_merge([
             'username_parameter' => '_username',
             'password_parameter' => '_password',
             'csrf_parameter' => '_csrf_token',
             'csrf_token_id' => 'authenticate',
             'post_only' => true,
-        ), $options), $logger, $dispatcher);
+        ], $options), $logger, $dispatcher);
 
         $this->csrfTokenManager = $csrfTokenManager;
     }
diff --git a/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordJsonAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordJsonAuthenticationListener.php
index e16afd287d34..fe830b252f90 100644
--- a/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordJsonAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordJsonAuthenticationListener.php
@@ -55,7 +55,7 @@ class UsernamePasswordJsonAuthenticationListener implements ListenerInterface
     private $propertyAccessor;
     private $sessionStrategy;
 
-    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, HttpUtils $httpUtils, $providerKey, AuthenticationSuccessHandlerInterface $successHandler = null, AuthenticationFailureHandlerInterface $failureHandler = null, array $options = array(), LoggerInterface $logger = null, EventDispatcherInterface $eventDispatcher = null, PropertyAccessorInterface $propertyAccessor = null)
+    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, HttpUtils $httpUtils, $providerKey, AuthenticationSuccessHandlerInterface $successHandler = null, AuthenticationFailureHandlerInterface $failureHandler = null, array $options = [], LoggerInterface $logger = null, EventDispatcherInterface $eventDispatcher = null, PropertyAccessorInterface $propertyAccessor = null)
     {
         $this->tokenStorage = $tokenStorage;
         $this->authenticationManager = $authenticationManager;
@@ -65,7 +65,7 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationM
         $this->failureHandler = $failureHandler;
         $this->logger = $logger;
         $this->eventDispatcher = $eventDispatcher;
-        $this->options = array_merge(array('username_path' => 'username', 'password_path' => 'password'), $options);
+        $this->options = array_merge(['username_path' => 'username', 'password_path' => 'password'], $options);
         $this->propertyAccessor = $propertyAccessor ?: PropertyAccess::createPropertyAccessor();
     }
 
@@ -138,7 +138,7 @@ public function handle(GetResponseEvent $event)
     private function onSuccess(Request $request, TokenInterface $token)
     {
         if (null !== $this->logger) {
-            $this->logger->info('User has been authenticated successfully.', array('username' => $token->getUsername()));
+            $this->logger->info('User has been authenticated successfully.', ['username' => $token->getUsername()]);
         }
 
         $this->migrateSession($request, $token);
@@ -166,7 +166,7 @@ private function onSuccess(Request $request, TokenInterface $token)
     private function onFailure(Request $request, AuthenticationException $failed)
     {
         if (null !== $this->logger) {
-            $this->logger->info('Authentication request failed.', array('exception' => $failed));
+            $this->logger->info('Authentication request failed.', ['exception' => $failed]);
         }
 
         $token = $this->tokenStorage->getToken();
@@ -175,7 +175,7 @@ private function onFailure(Request $request, AuthenticationException $failed)
         }
 
         if (!$this->failureHandler) {
-            return new JsonResponse(array('error' => $failed->getMessageKey()), 401);
+            return new JsonResponse(['error' => $failed->getMessageKey()], 401);
         }
 
         $response = $this->failureHandler->onAuthenticationFailure($request, $failed);
diff --git a/src/Symfony/Component/Security/Http/Firewall/X509AuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/X509AuthenticationListener.php
index d9a18624cca7..d17ef7464e7f 100644
--- a/src/Symfony/Component/Security/Http/Firewall/X509AuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/X509AuthenticationListener.php
@@ -52,6 +52,6 @@ protected function getPreAuthenticatedData(Request $request)
             throw new BadCredentialsException(sprintf('SSL credentials not found: %s, %s', $this->userKey, $this->credentialKey));
         }
 
-        return array($user, $request->server->get($this->credentialKey, ''));
+        return [$user, $request->server->get($this->credentialKey, '')];
     }
 }
diff --git a/src/Symfony/Component/Security/Http/FirewallMap.php b/src/Symfony/Component/Security/Http/FirewallMap.php
index 0f0c1fbefff1..0ffd068dfbc2 100644
--- a/src/Symfony/Component/Security/Http/FirewallMap.php
+++ b/src/Symfony/Component/Security/Http/FirewallMap.php
@@ -24,11 +24,11 @@
  */
 class FirewallMap implements FirewallMapInterface
 {
-    private $map = array();
+    private $map = [];
 
-    public function add(RequestMatcherInterface $requestMatcher = null, array $listeners = array(), ExceptionListener $exceptionListener = null, LogoutListener $logoutListener = null)
+    public function add(RequestMatcherInterface $requestMatcher = null, array $listeners = [], ExceptionListener $exceptionListener = null, LogoutListener $logoutListener = null)
     {
-        $this->map[] = array($requestMatcher, $listeners, $exceptionListener, $logoutListener);
+        $this->map[] = [$requestMatcher, $listeners, $exceptionListener, $logoutListener];
     }
 
     /**
@@ -38,10 +38,10 @@ public function getListeners(Request $request)
     {
         foreach ($this->map as $elements) {
             if (null === $elements[0] || $elements[0]->matches($request)) {
-                return array($elements[1], $elements[2], $elements[3]);
+                return [$elements[1], $elements[2], $elements[3]];
             }
         }
 
-        return array(array(), null, null);
+        return [[], null, null];
     }
 }
diff --git a/src/Symfony/Component/Security/Http/HttpUtils.php b/src/Symfony/Component/Security/Http/HttpUtils.php
index 49ccc723b451..0ed28f49b08b 100644
--- a/src/Symfony/Component/Security/Http/HttpUtils.php
+++ b/src/Symfony/Component/Security/Http/HttpUtils.php
@@ -76,7 +76,7 @@ public function createRedirectResponse(Request $request, $path, $status = 302)
      */
     public function createRequest(Request $request, $path)
     {
-        $newRequest = Request::create($this->generateUri($request, $path), 'get', array(), $request->cookies->all(), array(), $request->server->all());
+        $newRequest = Request::create($this->generateUri($request, $path), 'get', [], $request->cookies->all(), [], $request->server->all());
         if ($request->hasSession()) {
             $newRequest->setSession($request->getSession());
         }
diff --git a/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php b/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
index d7eeb03ba412..2e531bbbe28b 100644
--- a/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
+++ b/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
@@ -28,7 +28,7 @@ class LogoutUrlGenerator
     private $requestStack;
     private $router;
     private $tokenStorage;
-    private $listeners = array();
+    private $listeners = [];
     private $currentFirewall;
 
     public function __construct(RequestStack $requestStack = null, UrlGeneratorInterface $router = null, TokenStorageInterface $tokenStorage = null)
@@ -63,7 +63,7 @@ public function registerListener($key, $logoutPath, $csrfTokenId, $csrfParameter
             $context = null;
         }
 
-        $this->listeners[$key] = array($logoutPath, $csrfTokenId, $csrfParameter, $csrfTokenManager, $context);
+        $this->listeners[$key] = [$logoutPath, $csrfTokenId, $csrfParameter, $csrfTokenManager, $context];
     }
 
     /**
@@ -96,7 +96,7 @@ public function getLogoutUrl($key = null)
      */
     public function setCurrentFirewall($key, $context = null)
     {
-        $this->currentFirewall = array($key, $context);
+        $this->currentFirewall = [$key, $context];
     }
 
     /**
@@ -115,7 +115,7 @@ private function generateLogoutUrl($key, $referenceType)
             throw new \LogicException('Unable to generate the logout URL without a path.');
         }
 
-        $parameters = null !== $csrfTokenManager ? array($csrfParameter => (string) $csrfTokenManager->getToken($csrfTokenId)) : array();
+        $parameters = null !== $csrfTokenManager ? [$csrfParameter => (string) $csrfTokenManager->getToken($csrfTokenId)] : [];
 
         if ('/' === $logoutPath[0]) {
             if (!$this->requestStack) {
diff --git a/src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php b/src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php
index f17d573ae4fd..54c9134828f1 100644
--- a/src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php
+++ b/src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php
@@ -35,10 +35,10 @@ abstract class AbstractRememberMeServices implements RememberMeServicesInterface
     const COOKIE_DELIMITER = ':';
 
     protected $logger;
-    protected $options = array(
+    protected $options = [
         'secure' => false,
         'httponly' => true,
-    );
+    ];
     private $providerKey;
     private $secret;
     private $userProviders;
@@ -52,7 +52,7 @@ abstract class AbstractRememberMeServices implements RememberMeServicesInterface
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct(array $userProviders, $secret, $providerKey, array $options = array(), LoggerInterface $logger = null)
+    public function __construct(array $userProviders, $secret, $providerKey, array $options = [], LoggerInterface $logger = null)
     {
         if (empty($secret)) {
             throw new \InvalidArgumentException('$secret must not be empty.');
@@ -129,19 +129,19 @@ final public function autoLogin(Request $request)
             throw $e;
         } catch (UsernameNotFoundException $e) {
             if (null !== $this->logger) {
-                $this->logger->info('User for remember-me cookie not found.', array('exception' => $e));
+                $this->logger->info('User for remember-me cookie not found.', ['exception' => $e]);
             }
 
             $this->loginFail($request, $e);
         } catch (UnsupportedUserException $e) {
             if (null !== $this->logger) {
-                $this->logger->warning('User class for remember-me cookie not supported.', array('exception' => $e));
+                $this->logger->warning('User class for remember-me cookie not supported.', ['exception' => $e]);
             }
 
             $this->loginFail($request, $e);
         } catch (AuthenticationException $e) {
             if (null !== $this->logger) {
-                $this->logger->debug('Remember-Me authentication failed.', array('exception' => $e));
+                $this->logger->debug('Remember-Me authentication failed.', ['exception' => $e]);
             }
 
             $this->loginFail($request, $e);
@@ -274,7 +274,7 @@ protected function encodeCookie(array $cookieParts)
     protected function cancelCookie(Request $request)
     {
         if (null !== $this->logger) {
-            $this->logger->debug('Clearing remember-me cookie.', array('name' => $this->options['name']));
+            $this->logger->debug('Clearing remember-me cookie.', ['name' => $this->options['name']]);
         }
 
         $request->attributes->set(self::COOKIE_ATTR_NAME, new Cookie($this->options['name'], null, 1, $this->options['path'], $this->options['domain'], $this->options['secure'], $this->options['httponly']));
@@ -294,7 +294,7 @@ protected function isRememberMeRequested(Request $request)
         $parameter = ParameterBagUtils::getRequestParameterValue($request, $this->options['remember_me_parameter']);
 
         if (null === $parameter && null !== $this->logger) {
-            $this->logger->debug('Did not send remember-me cookie.', array('parameter' => $this->options['remember_me_parameter']));
+            $this->logger->debug('Did not send remember-me cookie.', ['parameter' => $this->options['remember_me_parameter']]);
         }
 
         return 'true' === $parameter || 'on' === $parameter || '1' === $parameter || 'yes' === $parameter || true === $parameter;
diff --git a/src/Symfony/Component/Security/Http/RememberMe/PersistentTokenBasedRememberMeServices.php b/src/Symfony/Component/Security/Http/RememberMe/PersistentTokenBasedRememberMeServices.php
index dcb7e1e64e06..272a5cc2db1c 100644
--- a/src/Symfony/Component/Security/Http/RememberMe/PersistentTokenBasedRememberMeServices.php
+++ b/src/Symfony/Component/Security/Http/RememberMe/PersistentTokenBasedRememberMeServices.php
@@ -79,7 +79,7 @@ protected function processAutoLoginCookie(array $cookieParts, Request $request)
         $request->attributes->set(self::COOKIE_ATTR_NAME,
             new Cookie(
                 $this->options['name'],
-                $this->encodeCookie(array($series, $tokenValue)),
+                $this->encodeCookie([$series, $tokenValue]),
                 time() + $this->options['lifetime'],
                 $this->options['path'],
                 $this->options['domain'],
@@ -112,7 +112,7 @@ protected function onLoginSuccess(Request $request, Response $response, TokenInt
         $response->headers->setCookie(
             new Cookie(
                 $this->options['name'],
-                $this->encodeCookie(array($series, $tokenValue)),
+                $this->encodeCookie([$series, $tokenValue]),
                 time() + $this->options['lifetime'],
                 $this->options['path'],
                 $this->options['domain'],
diff --git a/src/Symfony/Component/Security/Http/RememberMe/ResponseListener.php b/src/Symfony/Component/Security/Http/RememberMe/ResponseListener.php
index 5467e02365e7..7d931166dd13 100644
--- a/src/Symfony/Component/Security/Http/RememberMe/ResponseListener.php
+++ b/src/Symfony/Component/Security/Http/RememberMe/ResponseListener.php
@@ -41,6 +41,6 @@ public function onKernelResponse(FilterResponseEvent $event)
      */
     public static function getSubscribedEvents()
     {
-        return array(KernelEvents::RESPONSE => 'onKernelResponse');
+        return [KernelEvents::RESPONSE => 'onKernelResponse'];
     }
 }
diff --git a/src/Symfony/Component/Security/Http/RememberMe/TokenBasedRememberMeServices.php b/src/Symfony/Component/Security/Http/RememberMe/TokenBasedRememberMeServices.php
index dce2026f3a13..48d88e5730b2 100644
--- a/src/Symfony/Component/Security/Http/RememberMe/TokenBasedRememberMeServices.php
+++ b/src/Symfony/Component/Security/Http/RememberMe/TokenBasedRememberMeServices.php
@@ -100,12 +100,12 @@ protected function generateCookieValue($class, $username, $expires, $password)
     {
         // $username is encoded because it might contain COOKIE_DELIMITER,
         // we assume other values don't
-        return $this->encodeCookie(array(
+        return $this->encodeCookie([
             $class,
             base64_encode($username),
             $expires,
             $this->generateCookieHash($class, $username, $expires, $password),
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Http/Tests/AccessMapTest.php b/src/Symfony/Component/Security/Http/Tests/AccessMapTest.php
index 822043d63c8c..8ae9581e2c84 100644
--- a/src/Symfony/Component/Security/Http/Tests/AccessMapTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/AccessMapTest.php
@@ -23,10 +23,10 @@ public function testReturnsFirstMatchedPattern()
         $requestMatcher2 = $this->getRequestMatcher($request, true);
 
         $map = new AccessMap();
-        $map->add($requestMatcher1, array('ROLE_ADMIN'), 'http');
-        $map->add($requestMatcher2, array('ROLE_USER'), 'https');
+        $map->add($requestMatcher1, ['ROLE_ADMIN'], 'http');
+        $map->add($requestMatcher2, ['ROLE_USER'], 'https');
 
-        $this->assertSame(array(array('ROLE_USER'), 'https'), $map->getPatterns($request));
+        $this->assertSame([['ROLE_USER'], 'https'], $map->getPatterns($request));
     }
 
     public function testReturnsEmptyPatternIfNoneMatched()
@@ -35,9 +35,9 @@ public function testReturnsEmptyPatternIfNoneMatched()
         $requestMatcher = $this->getRequestMatcher($request, false);
 
         $map = new AccessMap();
-        $map->add($requestMatcher, array('ROLE_USER'), 'https');
+        $map->add($requestMatcher, ['ROLE_USER'], 'https');
 
-        $this->assertSame(array(null, null), $map->getPatterns($request));
+        $this->assertSame([null, null], $map->getPatterns($request));
     }
 
     private function getRequestMatcher($request, $matches)
diff --git a/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationFailureHandlerTest.php b/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationFailureHandlerTest.php
index cc2f504b8868..a9c18f3475d5 100644
--- a/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationFailureHandlerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationFailureHandlerTest.php
@@ -35,12 +35,12 @@ protected function setUp()
         $this->session = $this->getMockBuilder('Symfony\Component\HttpFoundation\Session\SessionInterface')->getMock();
         $this->request = $this->getMockBuilder('Symfony\Component\HttpFoundation\Request')->getMock();
         $this->request->expects($this->any())->method('getSession')->will($this->returnValue($this->session));
-        $this->exception = $this->getMockBuilder('Symfony\Component\Security\Core\Exception\AuthenticationException')->setMethods(array('getMessage'))->getMock();
+        $this->exception = $this->getMockBuilder('Symfony\Component\Security\Core\Exception\AuthenticationException')->setMethods(['getMessage'])->getMock();
     }
 
     public function testForward()
     {
-        $options = array('failure_forward' => true);
+        $options = ['failure_forward' => true];
 
         $subRequest = $this->getRequest();
         $subRequest->attributes->expects($this->once())
@@ -67,7 +67,7 @@ public function testRedirect()
             ->method('createRedirectResponse')->with($this->request, '/login')
             ->will($this->returnValue($response));
 
-        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, array(), $this->logger);
+        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, [], $this->logger);
         $result = $handler->onAuthenticationFailure($this->request, $this->exception);
 
         $this->assertSame($response, $result);
@@ -78,13 +78,13 @@ public function testExceptionIsPersistedInSession()
         $this->session->expects($this->once())
             ->method('set')->with(Security::AUTHENTICATION_ERROR, $this->exception);
 
-        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, array(), $this->logger);
+        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, [], $this->logger);
         $handler->onAuthenticationFailure($this->request, $this->exception);
     }
 
     public function testExceptionIsPassedInRequestOnForward()
     {
-        $options = array('failure_forward' => true);
+        $options = ['failure_forward' => true];
 
         $subRequest = $this->getRequest();
         $subRequest->attributes->expects($this->once())
@@ -105,15 +105,15 @@ public function testRedirectIsLogged()
         $this->logger
             ->expects($this->once())
             ->method('debug')
-            ->with('Authentication failure, redirect triggered.', array('failure_path' => '/login'));
+            ->with('Authentication failure, redirect triggered.', ['failure_path' => '/login']);
 
-        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, array(), $this->logger);
+        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, [], $this->logger);
         $handler->onAuthenticationFailure($this->request, $this->exception);
     }
 
     public function testForwardIsLogged()
     {
-        $options = array('failure_forward' => true);
+        $options = ['failure_forward' => true];
 
         $this->httpUtils->expects($this->once())
             ->method('createRequest')->with($this->request, '/login')
@@ -122,7 +122,7 @@ public function testForwardIsLogged()
         $this->logger
             ->expects($this->once())
             ->method('debug')
-            ->with('Authentication failure, forward triggered.', array('failure_path' => '/login'));
+            ->with('Authentication failure, forward triggered.', ['failure_path' => '/login']);
 
         $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, $options, $this->logger);
         $handler->onAuthenticationFailure($this->request, $this->exception);
@@ -130,7 +130,7 @@ public function testForwardIsLogged()
 
     public function testFailurePathCanBeOverwritten()
     {
-        $options = array('failure_path' => '/auth/login');
+        $options = ['failure_path' => '/auth/login'];
 
         $this->httpUtils->expects($this->once())
             ->method('createRedirectResponse')->with($this->request, '/auth/login');
@@ -148,7 +148,7 @@ public function testFailurePathCanBeOverwrittenWithRequest()
         $this->httpUtils->expects($this->once())
             ->method('createRedirectResponse')->with($this->request, '/auth/login');
 
-        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, array(), $this->logger);
+        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, [], $this->logger);
         $handler->onAuthenticationFailure($this->request, $this->exception);
     }
 
@@ -156,18 +156,18 @@ public function testFailurePathCanBeOverwrittenWithNestedAttributeInRequest()
     {
         $this->request->expects($this->once())
             ->method('get')->with('_failure_path')
-            ->will($this->returnValue(array('value' => '/auth/login')));
+            ->will($this->returnValue(['value' => '/auth/login']));
 
         $this->httpUtils->expects($this->once())
             ->method('createRedirectResponse')->with($this->request, '/auth/login');
 
-        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, array('failure_path_parameter' => '_failure_path[value]'), $this->logger);
+        $handler = new DefaultAuthenticationFailureHandler($this->httpKernel, $this->httpUtils, ['failure_path_parameter' => '_failure_path[value]'], $this->logger);
         $handler->onAuthenticationFailure($this->request, $this->exception);
     }
 
     public function testFailurePathParameterCanBeOverwritten()
     {
-        $options = array('failure_path_parameter' => '_my_failure_path');
+        $options = ['failure_path_parameter' => '_my_failure_path'];
 
         $this->request->expects($this->once())
             ->method('get')->with('_my_failure_path')
diff --git a/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationSuccessHandlerTest.php b/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationSuccessHandlerTest.php
index a7b8547b6b53..531d49227f2c 100644
--- a/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationSuccessHandlerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Authentication/DefaultAuthenticationSuccessHandlerTest.php
@@ -42,72 +42,72 @@ public function getRequestRedirections()
         $requestWithSession = Request::create('/');
         $requestWithSession->setSession($session);
 
-        return array(
-            'default' => array(
+        return [
+            'default' => [
                 Request::create('/'),
-                array(),
+                [],
                 '/',
-            ),
-            'forced target path' => array(
+            ],
+            'forced target path' => [
                 Request::create('/'),
-                array('always_use_default_target_path' => true, 'default_target_path' => '/dashboard'),
+                ['always_use_default_target_path' => true, 'default_target_path' => '/dashboard'],
                 '/dashboard',
-            ),
-            'target path as query string' => array(
+            ],
+            'target path as query string' => [
                 Request::create('/?_target_path=/dashboard'),
-                array(),
+                [],
                 '/dashboard',
-            ),
-            'target path name as query string is customized' => array(
+            ],
+            'target path name as query string is customized' => [
                 Request::create('/?_my_target_path=/dashboard'),
-                array('target_path_parameter' => '_my_target_path'),
+                ['target_path_parameter' => '_my_target_path'],
                 '/dashboard',
-            ),
-            'target path name as query string is customized and nested' => array(
+            ],
+            'target path name as query string is customized and nested' => [
                 Request::create('/?_target_path[value]=/dashboard'),
-                array('target_path_parameter' => '_target_path[value]'),
+                ['target_path_parameter' => '_target_path[value]'],
                 '/dashboard',
-            ),
-            'target path in session' => array(
+            ],
+            'target path in session' => [
                 $requestWithSession,
-                array(),
+                [],
                 '/admin/dashboard',
-            ),
-            'target path as referer' => array(
-                Request::create('/', 'GET', array(), array(), array(), array('HTTP_REFERER' => 'http://localhost/dashboard')),
-                array('use_referer' => true),
+            ],
+            'target path as referer' => [
+                Request::create('/', 'GET', [], [], [], ['HTTP_REFERER' => 'http://localhost/dashboard']),
+                ['use_referer' => true],
                 '/dashboard',
-            ),
-            'target path as referer is ignored if not configured' => array(
-                Request::create('/', 'GET', array(), array(), array(), array('HTTP_REFERER' => 'http://localhost/dashboard')),
-                array(),
+            ],
+            'target path as referer is ignored if not configured' => [
+                Request::create('/', 'GET', [], [], [], ['HTTP_REFERER' => 'http://localhost/dashboard']),
+                [],
                 '/',
-            ),
-            'target path as referer when referer not set' => array(
+            ],
+            'target path as referer when referer not set' => [
                 Request::create('/'),
-                array('use_referer' => true),
+                ['use_referer' => true],
                 '/',
-            ),
-            'target path as referer when referer is ?' => array(
-                Request::create('/', 'GET', array(), array(), array(), array('HTTP_REFERER' => '?')),
-                array('use_referer' => true),
+            ],
+            'target path as referer when referer is ?' => [
+                Request::create('/', 'GET', [], [], [], ['HTTP_REFERER' => '?']),
+                ['use_referer' => true],
                 '/',
-            ),
-            'target path should be different than login URL' => array(
-                Request::create('/', 'GET', array(), array(), array(), array('HTTP_REFERER' => 'http://localhost/login')),
-                array('use_referer' => true, 'login_path' => '/login'),
+            ],
+            'target path should be different than login URL' => [
+                Request::create('/', 'GET', [], [], [], ['HTTP_REFERER' => 'http://localhost/login']),
+                ['use_referer' => true, 'login_path' => '/login'],
                 '/',
-            ),
-            'target path should be different than login URL (query string does not matter)' => array(
-                Request::create('/', 'GET', array(), array(), array(), array('HTTP_REFERER' => 'http://localhost/login?t=1&p=2')),
-                array('use_referer' => true, 'login_path' => '/login'),
+            ],
+            'target path should be different than login URL (query string does not matter)' => [
+                Request::create('/', 'GET', [], [], [], ['HTTP_REFERER' => 'http://localhost/login?t=1&p=2']),
+                ['use_referer' => true, 'login_path' => '/login'],
                 '/',
-            ),
-            'target path should be different than login URL (login_path as a route)' => array(
-                Request::create('/', 'GET', array(), array(), array(), array('HTTP_REFERER' => 'http://localhost/login?t=1&p=2')),
-                array('use_referer' => true, 'login_path' => 'login_route'),
+            ],
+            'target path should be different than login URL (login_path as a route)' => [
+                Request::create('/', 'GET', [], [], [], ['HTTP_REFERER' => 'http://localhost/login?t=1&p=2']),
+                ['use_referer' => true, 'login_path' => 'login_route'],
                 '/',
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Http/Tests/EntryPoint/RetryAuthenticationEntryPointTest.php b/src/Symfony/Component/Security/Http/Tests/EntryPoint/RetryAuthenticationEntryPointTest.php
index abd90fb4ae78..05c85f23b70f 100644
--- a/src/Symfony/Component/Security/Http/Tests/EntryPoint/RetryAuthenticationEntryPointTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/EntryPoint/RetryAuthenticationEntryPointTest.php
@@ -32,34 +32,34 @@ public function testStart($httpPort, $httpsPort, $request, $expectedUrl)
     public function dataForStart()
     {
         if (!class_exists('Symfony\Component\HttpFoundation\Request')) {
-            return array(array());
+            return [[]];
         }
 
-        return array(
-            array(
+        return [
+            [
                 80,
                 443,
                 Request::create('http://localhost/foo/bar?baz=bat'),
                 'https://localhost/foo/bar?baz=bat',
-            ),
-            array(
+            ],
+            [
                 80,
                 443,
                 Request::create('https://localhost/foo/bar?baz=bat'),
                 'http://localhost/foo/bar?baz=bat',
-            ),
-            array(
+            ],
+            [
                 80,
                 123,
                 Request::create('http://localhost/foo/bar?baz=bat'),
                 'https://localhost:123/foo/bar?baz=bat',
-            ),
-            array(
+            ],
+            [
                 8080,
                 443,
                 Request::create('https://localhost/foo/bar?baz=bat'),
                 'http://localhost:8080/foo/bar?baz=bat',
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/AbstractPreAuthenticatedListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/AbstractPreAuthenticatedListenerTest.php
index 32ea6e10250b..44bbf4423be5 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/AbstractPreAuthenticatedListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/AbstractPreAuthenticatedListenerTest.php
@@ -21,9 +21,9 @@ class AbstractPreAuthenticatedListenerTest extends TestCase
 {
     public function testHandleWithValidValues()
     {
-        $userCredentials = array('TheUser', 'TheCredentials');
+        $userCredentials = ['TheUser', 'TheCredentials'];
 
-        $request = new Request(array(), array(), array(), array(), array(), array());
+        $request = new Request([], [], [], [], [], []);
 
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
@@ -47,11 +47,11 @@ public function testHandleWithValidValues()
             ->will($this->returnValue($token))
         ;
 
-        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', array(
+        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', [
             $tokenStorage,
             $authenticationManager,
             'TheProviderKey',
-        ));
+        ]);
         $listener
             ->expects($this->once())
             ->method('getPreAuthenticatedData')
@@ -69,9 +69,9 @@ public function testHandleWithValidValues()
 
     public function testHandleWhenAuthenticationFails()
     {
-        $userCredentials = array('TheUser', 'TheCredentials');
+        $userCredentials = ['TheUser', 'TheCredentials'];
 
-        $request = new Request(array(), array(), array(), array(), array(), array());
+        $request = new Request([], [], [], [], [], []);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage
@@ -93,11 +93,11 @@ public function testHandleWhenAuthenticationFails()
             ->willThrowException($exception)
         ;
 
-        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', array(
+        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', [
             $tokenStorage,
             $authenticationManager,
             'TheProviderKey',
-        ));
+        ]);
         $listener
             ->expects($this->once())
             ->method('getPreAuthenticatedData')
@@ -115,11 +115,11 @@ public function testHandleWhenAuthenticationFails()
 
     public function testHandleWhenAuthenticationFailsWithDifferentToken()
     {
-        $userCredentials = array('TheUser', 'TheCredentials');
+        $userCredentials = ['TheUser', 'TheCredentials'];
 
-        $token = new UsernamePasswordToken('TheUsername', 'ThePassword', 'TheProviderKey', array('ROLE_FOO'));
+        $token = new UsernamePasswordToken('TheUsername', 'ThePassword', 'TheProviderKey', ['ROLE_FOO']);
 
-        $request = new Request(array(), array(), array(), array(), array(), array());
+        $request = new Request([], [], [], [], [], []);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage
@@ -141,11 +141,11 @@ public function testHandleWhenAuthenticationFailsWithDifferentToken()
             ->willThrowException($exception)
         ;
 
-        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', array(
+        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', [
             $tokenStorage,
             $authenticationManager,
             'TheProviderKey',
-        ));
+        ]);
         $listener
             ->expects($this->once())
             ->method('getPreAuthenticatedData')
@@ -163,11 +163,11 @@ public function testHandleWhenAuthenticationFailsWithDifferentToken()
 
     public function testHandleWithASimilarAuthenticatedToken()
     {
-        $userCredentials = array('TheUser', 'TheCredentials');
+        $userCredentials = ['TheUser', 'TheCredentials'];
 
-        $request = new Request(array(), array(), array(), array(), array(), array());
+        $request = new Request([], [], [], [], [], []);
 
-        $token = new PreAuthenticatedToken('TheUser', 'TheCredentials', 'TheProviderKey', array('ROLE_FOO'));
+        $token = new PreAuthenticatedToken('TheUser', 'TheCredentials', 'TheProviderKey', ['ROLE_FOO']);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage
@@ -182,11 +182,11 @@ public function testHandleWithASimilarAuthenticatedToken()
             ->method('authenticate')
         ;
 
-        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', array(
+        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', [
             $tokenStorage,
             $authenticationManager,
             'TheProviderKey',
-        ));
+        ]);
         $listener
             ->expects($this->once())
             ->method('getPreAuthenticatedData')
@@ -204,11 +204,11 @@ public function testHandleWithASimilarAuthenticatedToken()
 
     public function testHandleWithAnInvalidSimilarToken()
     {
-        $userCredentials = array('TheUser', 'TheCredentials');
+        $userCredentials = ['TheUser', 'TheCredentials'];
 
-        $request = new Request(array(), array(), array(), array(), array(), array());
+        $request = new Request([], [], [], [], [], []);
 
-        $token = new PreAuthenticatedToken('AnotherUser', 'TheCredentials', 'TheProviderKey', array('ROLE_FOO'));
+        $token = new PreAuthenticatedToken('AnotherUser', 'TheCredentials', 'TheProviderKey', ['ROLE_FOO']);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage
@@ -231,11 +231,11 @@ public function testHandleWithAnInvalidSimilarToken()
             ->willThrowException($exception)
         ;
 
-        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', array(
+        $listener = $this->getMockForAbstractClass('Symfony\Component\Security\Http\Firewall\AbstractPreAuthenticatedListener', [
             $tokenStorage,
             $authenticationManager,
             'TheProviderKey',
-        ));
+        ]);
         $listener
             ->expects($this->once())
             ->method('getPreAuthenticatedData')
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/AccessListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/AccessListenerTest.php
index c49527bc14d6
10000
..92b2270877fb 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/AccessListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/AccessListenerTest.php
@@ -28,7 +28,7 @@ public function testHandleWhenTheAccessDecisionManagerDecidesToRefuseAccess()
             ->expects($this->any())
             ->method('getPatterns')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(array('foo' => 'bar'), null)))
+            ->will($this->returnValue([['foo' => 'bar'], null]))
         ;
 
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -49,7 +49,7 @@ public function testHandleWhenTheAccessDecisionManagerDecidesToRefuseAccess()
         $accessDecisionManager
             ->expects($this->once())
             ->method('decide')
-            ->with($this->equalTo($token), $this->equalTo(array('foo' => 'bar')), $this->equalTo($request))
+            ->with($this->equalTo($token), $this->equalTo(['foo' => 'bar']), $this->equalTo($request))
             ->will($this->returnValue(false))
         ;
 
@@ -79,7 +79,7 @@ public function testHandleWhenTheTokenIsNotAuthenticated()
             ->expects($this->any())
             ->method('getPatterns')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(array('foo' => 'bar'), null)))
+            ->will($this->returnValue([['foo' => 'bar'], null]))
         ;
 
         $notAuthenticatedToken = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -120,7 +120,7 @@ public function testHandleWhenTheTokenIsNotAuthenticated()
         $accessDecisionManager
             ->expects($this->once())
             ->method('decide')
-            ->with($this->equalTo($authenticatedToken), $this->equalTo(array('foo' => 'bar')), $this->equalTo($request))
+            ->with($this->equalTo($authenticatedToken), $this->equalTo(['foo' => 'bar']), $this->equalTo($request))
             ->will($this->returnValue(true))
         ;
 
@@ -150,7 +150,7 @@ public function testHandleWhenThereIsNoAccessMapEntryMatchingTheRequest()
             ->expects($this->any())
             ->method('getPatterns')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(null, null)))
+            ->will($this->returnValue([null, null]))
         ;
 
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/AnonymousAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/AnonymousAuthenticationListenerTest.php
index 5bd0c8082966..f6f36415d37e 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/AnonymousAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/AnonymousAuthenticationListenerTest.php
@@ -49,7 +49,7 @@ public function testHandleWithTokenStorageHavingNoToken()
             ->will($this->returnValue(null))
         ;
 
-        $anonymousToken = new AnonymousToken('TheSecret', 'anon.', array());
+        $anonymousToken = new AnonymousToken('TheSecret', 'anon.', []);
 
         $authenticationManager = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface')->getMock();
         $authenticationManager
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/BasicAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/BasicAuthenticationListenerTest.php
index 269dbaeeaa57..2eec46b1d16a 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/BasicAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/BasicAuthenticationListenerTest.php
@@ -23,10 +23,10 @@ class BasicAuthenticationListenerTest extends TestCase
 {
     public function testHandleWithValidUsernameAndPasswordServerParameters()
     {
-        $request = new Request(array(), array(), array(), array(), array(), array(
+        $request = new Request([], [], [], [], [], [
             'PHP_AUTH_USER' => 'TheUsername',
             'PHP_AUTH_PW' => 'ThePassword',
-        ));
+        ]);
 
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
@@ -69,10 +69,10 @@ public function testHandleWithValidUsernameAndPasswordServerParameters()
 
     public function testHandleWhenAuthenticationFails()
     {
-        $request = new Request(array(), array(), array(), array(), array(), array(
+        $request = new Request([], [], [], [], [], [
             'PHP_AUTH_USER' => 'TheUsername',
             'PHP_AUTH_PW' => 'ThePassword',
-        ));
+        ]);
 
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
@@ -99,7 +99,7 @@ public function testHandleWhenAuthenticationFails()
 
         $listener = new BasicAuthenticationListener(
             $tokenStorage,
-            new AuthenticationProviderManager(array($this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface')->getMock())),
+            new AuthenticationProviderManager([$this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface')->getMock()]),
             'TheProviderKey',
             $authenticationEntryPoint
         );
@@ -148,9 +148,9 @@ public function testHandleWithNoUsernameServerParameter()
 
     public function testHandleWithASimilarAuthenticatedToken()
     {
-        $request = new Request(array(), array(), array(), array(), array(), array('PHP_AUTH_USER' => 'TheUsername'));
+        $request = new Request([], [], [], [], [], ['PHP_AUTH_USER' => 'TheUsername']);
 
-        $token = new UsernamePasswordToken('TheUsername', 'ThePassword', 'TheProviderKey', array('ROLE_FOO'));
+        $token = new UsernamePasswordToken('TheUsername', 'ThePassword', 'TheProviderKey', ['ROLE_FOO']);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage
@@ -198,12 +198,12 @@ public function testItRequiresProviderKey()
 
     public function testHandleWithADifferentAuthenticatedToken()
     {
-        $request = new Request(array(), array(), array(), array(), array(), array(
+        $request = new Request([], [], [], [], [], [
             'PHP_AUTH_USER' => 'TheUsername',
             'PHP_AUTH_PW' => 'ThePassword',
-        ));
+        ]);
 
-        $token = new PreAuthenticatedToken('TheUser', 'TheCredentials', 'TheProviderKey', array('ROLE_FOO'));
+        $token = new PreAuthenticatedToken('TheUser', 'TheCredentials', 'TheProviderKey', ['ROLE_FOO']);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage
@@ -228,7 +228,7 @@ public function testHandleWithADifferentAuthenticatedToken()
 
         $listener = new BasicAuthenticationListener(
             $tokenStorage,
-            new AuthenticationProviderManager(array($this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface')->getMock())),
+            new AuthenticationProviderManager([$this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface')->getMock()]),
             'TheProviderKey',
             $authenticationEntryPoint
         );
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/ChannelListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/ChannelListenerTest.php
index 3016269c04b2..3740faec8ba8 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/ChannelListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/ChannelListenerTest.php
@@ -31,7 +31,7 @@ public function testHandleWithNotSecuredRequestAndHttpChannel()
             ->expects($this->any())
             ->method('getPatterns')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(array(), 'http')))
+            ->will($this->returnValue([[], 'http']))
         ;
 
         $entryPoint = $this->getMockBuilder('Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface')->getMock();
@@ -69,7 +69,7 @@ public function testHandleWithSecuredRequestAndHttpsChannel()
             ->expects($this->any())
             ->method('getPatterns')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(array(), 'https')))
+            ->will($this->returnValue([[], 'https']))
         ;
 
         $entryPoint = $this->getMockBuilder('Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface')->getMock();
@@ -109,7 +109,7 @@ public function testHandleWithNotSecuredRequestAndHttpsChannel()
             ->expects($this->any())
             ->method('getPatterns')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(array(), 'https')))
+            ->will($this->returnValue([[], 'https']))
         ;
 
         $entryPoint = $this->getMockBuilder('Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface')->getMock();
@@ -152,7 +152,7 @@ public function testHandleWithSecuredRequestAndHttpChannel()
             ->expects($this->any())
             ->method('getPatterns')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(array(), 'http')))
+            ->will($this->returnValue([[], 'http']))
         ;
 
         $entryPoint = $this->getMockBuilder('Symfony\Component\Security\Http\EntryPoint\AuthenticationEntryPointInterface')->getMock();
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php
index bb49d039611c..8df2f40acd11 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php
@@ -42,7 +42,7 @@ public function testItRequiresContextKey()
     {
         new ContextListener(
             $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock(),
-            array(),
+            [],
             ''
         );
     }
@@ -53,7 +53,7 @@ public function testItRequiresContextKey()
      */
     public function testUserProvidersNeedToImplementAnInterface()
     {
-        $this->handleEventWithPreviousSession(new TokenStorage(), array(new \stdClass()));
+        $this->handleEventWithPreviousSession(new TokenStorage(), [new \stdClass()]);
     }
 
     public function testOnKernelResponseWillAddSession()
@@ -112,7 +112,7 @@ public function testOnKernelResponseWithoutSession()
             new Response()
         );
 
-        $listener = new ContextListener($tokenStorage, array(), 'session', null, new EventDispatcher());
+        $listener = new ContextListener($tokenStorage, [], 'session', null, new EventDispatcher());
         $listener->onKernelResponse($event);
 
         $this->assertTrue($session->isStarted());
@@ -131,7 +131,7 @@ public function testOnKernelResponseWithoutSessionNorToken()
             new Response()
         );
 
-        $listener = new ContextListener(new TokenStorage(), array(), 'session', null, new EventDispatcher());
+        $listener = new ContextListener(new TokenStorage(), [], 'session', null, new EventDispatcher());
         $listener->onKernelResponse($event);
 
         $this->assertFalse($session->isStarted());
@@ -166,19 +166,19 @@ public function testInvalidTokenInSession($token)
             ->method('setToken')
             ->with(null);
 
-        $listener = new ContextListener($tokenStorage, array(), 'key123');
+        $listener = new ContextListener($tokenStorage, [], 'key123');
         $listener->handle($event);
     }
 
     public function provideInvalidToken()
     {
-        return array(
-            array('foo'),
-            array('O:8:"NotFound":0:{}'),
-            array(serialize(new \__PHP_Incomplete_Class())),
-            array(serialize(null)),
-            array(null),
-        );
+        return [
+            ['foo'],
+            ['O:8:"NotFound":0:{}'],
+            [serialize(new \__PHP_Incomplete_Class())],
+            [serialize(null)],
+            [null],
+        ];
     }
 
     public function testHandleAddsKernelResponseListener()
@@ -189,7 +189,7 @@ public function testHandleAddsKernelResponseListener()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $listener = new ContextListener($tokenStorage, array(), 'key123', null, $dispatcher);
+        $listener = new ContextListener($tokenStorage, [], 'key123', null, $dispatcher);
 
         $event->expects($this->any())
             ->method('isMasterRequest')
@@ -200,7 +200,7 @@ public function testHandleAddsKernelResponseListener()
 
         $dispatcher->expects($this->once())
             ->method('addListener')
-            ->with(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'));
+            ->with(KernelEvents::RESPONSE, [$listener, 'onKernelResponse']);
 
         $listener->handle($event);
     }
@@ -213,7 +213,7 @@ public function testOnKernelResponseListenerRemovesItself()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $listener = new ContextListener($tokenStorage, array(), 'key123', null, $dispatcher);
+        $listener = new ContextListener($tokenStorage, [], 'key123', null, $dispatcher);
 
         $request = $this->getMockBuilder('Symfony\Component\HttpFoundation\Request')->getMock();
         $request->expects($this->any())
@@ -229,7 +229,7 @@ public function testOnKernelResponseListenerRemovesItself()
 
         $dispatcher->expects($this->once())
             ->method('removeListener')
-            ->with(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'));
+            ->with(KernelEvents::RESPONSE, [$listener, 'onKernelResponse']);
 
         $listener->onKernelResponse($event);
     }
@@ -247,7 +247,7 @@ public function testHandleRemovesTokenIfNoPreviousSessionWasFound()
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage->expects($this->once())->method('setToken')->with(null);
 
-        $listener = new ContextListener($tokenStorage, array(), 'key123');
+        $listener = new ContextListener($tokenStorage, [], 'key123');
         $listener->handle($event);
     }
 
@@ -259,7 +259,7 @@ public function testIfTokenIsDeauthenticatedTriggersDeprecations()
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)));
+        $this->handleEventWithPreviousSession($tokenStorage, [new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)]);
 
         $this->assertSame($refreshedUser, $tokenStorage->getToken()->getUser());
     }
@@ -268,7 +268,7 @@ public function testIfTokenIsDeauthenticated()
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)), null, true);
+        $this->handleEventWithPreviousSession($tokenStorage, [new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)], null, true);
 
         $this->assertNull($tokenStorage->getToken());
     }
@@ -278,7 +278,7 @@ public function testIfTokenIsNotDeauthenticated()
         $tokenStorage = new TokenStorage();
         $badRefreshedUser = new User('foobar', 'baz');
         $goodRefreshedUser = new User('foobar', 'bar');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new SupportingUserProvider($badRefreshedUser), new SupportingUserProvider($goodRefreshedUser)), $goodRefreshedUser, true);
+        $this->handleEventWithPreviousSession($tokenStorage, [new SupportingUserProvider($badRefreshedUser), new SupportingUserProvider($goodRefreshedUser)], $goodRefreshedUser, true);
         $this->assertSame($goodRefreshedUser, $tokenStorage->getToken()->getUser());
     }
 
@@ -286,7 +286,7 @@ public function testTryAllUserProvidersUntilASupportingUserProviderIsFound()
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)), $refreshedUser);
+        $this->handleEventWithPreviousSession($tokenStorage, [new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)], $refreshedUser);
 
         $this->assertSame($refreshedUser, $tokenStorage->getToken()->getUser());
     }
@@ -295,7 +295,7 @@ public function testNextSupportingUserProviderIsTriedIfPreviousSupportingUserPro
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new SupportingUserProvider(), new SupportingUserProvider($refreshedUser)), $refreshedUser);
+        $this->handleEventWithPreviousSession($tokenStorage, [new SupportingUserProvider(), new SupportingUserProvider($refreshedUser)], $refreshedUser);
 
         $this->assertSame($refreshedUser, $tokenStorage->getToken()->getUser());
     }
@@ -303,7 +303,7 @@ public function testNextSupportingUserProviderIsTriedIfPreviousSupportingUserPro
     public function testTokenIsSetToNullIfNoUserWasLoadedByTheRegisteredUserProviders()
     {
         $tokenStorage = new TokenStorage();
-        $this->handleEventWithPreviousSession($tokenStorage, array(new NotSupportingUserProvider(), new SupportingUserProvider()));
+        $this->handleEventWithPreviousSession($tokenStorage, [new NotSupportingUserProvider(), new SupportingUserProvider()]);
 
         $this->assertNull($tokenStorage->getToken());
     }
@@ -313,14 +313,14 @@ public function testTokenIsSetToNullIfNoUserWasLoadedByTheRegisteredUserProvider
      */
     public function testRuntimeExceptionIsThrownIfNoSupportingUserProviderWasRegistered()
     {
-        $this->handleEventWithPreviousSession(new TokenStorage(), array(new NotSupportingUserProvider(), new NotSupportingUserProvider()));
+        $this->handleEventWithPreviousSession(new TokenStorage(), [new NotSupportingUserProvider(), new NotSupportingUserProvider()]);
     }
 
     public function testAcceptsProvidersAsTraversable()
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, new \ArrayObject(array(new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser))), $refreshedUser);
+        $this->handleEventWithPreviousSession($tokenStorage, new \ArrayObject([new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)]), $refreshedUser);
 
         $this->assertSame($refreshedUser, $tokenStorage->getToken()->getUser());
     }
@@ -347,7 +347,7 @@ protected function runSessionOnKernelResponse($newToken, $original = null)
             new Response()
         );
 
-        $listener = new ContextListener($tokenStorage, array(), 'session', null, new EventDispatcher());
+        $listener = new ContextListener($tokenStorage, [], 'session', null, new EventDispatcher());
         $listener->onKernelResponse($event);
 
         return $session;
@@ -357,7 +357,7 @@ private function handleEventWithPreviousSession(TokenStorageInterface $tokenStor
     {
         $user = $user ?: new User('foo', 'bar');
         $session = new Session(new MockArraySessionStorage());
-        $session->set('_security_context_key', serialize(new UsernamePasswordToken($user, '', 'context_key', array('ROLE_USER'))));
+        $session->set('_security_context_key', serialize(new UsernamePasswordToken($user, '', 'context_key', ['ROLE_USER'])));
 
         $request = new Request();
         $request->setSession($session);
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/DigestAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/DigestAuthenticationListenerTest.php
index b6f7efa8b5aa..b5378902ea9f 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/DigestAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/DigestAuthenticationListenerTest.php
@@ -34,7 +34,7 @@ public function testHandleWithValidDigest()
             'response="'.$serverDigest.'"'
         ;
 
-        $request = new Request(array(), array(), array(), array(), array(), array('PHP_AUTH_DIGEST' => $digestData));
+        $request = new Request([], [], [], [], [], ['PHP_AUTH_DIGEST' => $digestData]);
 
         $entryPoint = new DigestAuthenticationEntryPoint($realm, $secret);
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php
index 08662acf1687..53fedebcad70 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php
@@ -63,13 +63,13 @@ public function testAuthenticationExceptionWithEntryPoint(\Exception $exception)
 
     public function getAuthenticationExceptionProvider()
     {
-        return array(
-            array($e = new AuthenticationException(), new HttpException(Response::HTTP_UNAUTHORIZED, '', $e, array(), 0)),
-            array(new \LogicException('random', 0, $e = new AuthenticationException()), new HttpException(Response::HTTP_UNAUTHORIZED, '', $e, array(), 0)),
-            array(new \LogicException('random', 0, $e = new AuthenticationException('embed', 0, new AuthenticationException())), new HttpException(Response::HTTP_UNAUTHORIZED, 'embed', $e, array(), 0)),
-            array(new \LogicException('random', 0, $e = new AuthenticationException('embed', 0, new AccessDeniedException())), new HttpException(Response::HTTP_UNAUTHORIZED, 'embed', $e, array(), 0)),
-            array($e = new AuthenticationException('random', 0, new \LogicException()), new HttpException(Response::HTTP_UNAUTHORIZED, 'random', $e, array(), 0)),
-        );
+        return [
+            [$e = new AuthenticationException(), new HttpException(Response::HTTP_UNAUTHORIZED, '', $e, [], 0)],
+            [new \LogicException('random', 0, $e = new AuthenticationException()), new HttpException(Response::HTTP_UNAUTHORIZED, '', $e, [], 0)],
+            [new \LogicException('random', 0, $e = new AuthenticationException('embed', 0, new AuthenticationException())), new HttpException(Response::HTTP_UNAUTHORIZED, 'embed', $e, [], 0)],
+            [new \LogicException('random', 0, $e = new AuthenticationException('embed', 0, new AccessDeniedException())), new HttpException(Response::HTTP_UNAUTHORIZED, 'embed', $e, [], 0)],
+            [$e = new AuthenticationException('random', 0, new \LogicException()), new HttpException(Response::HTTP_UNAUTHORIZED, 'random', $e, [], 0)],
+        ];
     }
 
     public function testExceptionWhenEntryPointReturnsBadValue()
@@ -159,13 +159,13 @@ public function testAccessDeniedExceptionNotFullFledged(\Exception $exception, \
 
     public function getAccessDeniedExceptionProvider()
     {
-        return array(
-            array(new AccessDeniedException()),
-            array(new \LogicException('random', 0, $e = new AccessDeniedException()), $e),
-            array(new \LogicException('random', 0, $e = new AccessDeniedException('embed', new AccessDeniedException())), $e),
-            array(new \LogicException('random', 0, $e = new AccessDeniedException('embed', new AuthenticationException())), $e),
-            array(new AccessDeniedException('random', new \LogicException())),
-        );
+        return [
+            [new AccessDeniedException()],
+            [new \LogicException('random', 0, $e = new AccessDeniedException()), $e],
+            [new \LogicException('random', 0, $e = new AccessDeniedException('embed', new AccessDeniedException())), $e],
+            [new \LogicException('random', 0, $e = new AccessDeniedException('embed', new AuthenticationException())), $e],
+            [new AccessDeniedException('random', new \LogicException())],
+        ];
     }
 
     private function createEntryPoint(Response $response = null)
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/LogoutListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/LogoutListenerTest.php
index c909c58eb4e2..fbcea3d738e7 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/LogoutListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/LogoutListenerTest.php
@@ -191,7 +191,7 @@ private function getGetResponseEvent()
             ->method('getRequest')
             ->will($this->returnValue($request = new Request()));
 
-        return array($event, $request);
+        return [$event, $request];
     }
 
     private function getHandler()
@@ -212,16 +212,16 @@ private function getListener($successHandler = null, $tokenManager = null)
             $tokenStorage = $this->getTokenStorage(),
             $httpUtils = $this->getHttpUtils(),
             $successHandler ?: $this->getSuccessHandler(),
-            $options = array(
+            $options = [
                 'csrf_parameter' => '_csrf_token',
                 'csrf_token_id' => 'logout',
                 'logout_path' => '/logout',
                 'target_url' => '/',
-            ),
+            ],
             $tokenManager
         );
 
-        return array($listener, $tokenStorage, $httpUtils, $options);
+        return [$listener, $tokenStorage, $httpUtils, $options];
     }
 
     private function getSuccessHandler()
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php
index 29a2c6f5c930..686c7231e689 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php
@@ -420,7 +420,7 @@ protected function getListener($withDispatcher = false, $catchExceptions = true,
             $sessionStrategy = ($withSessionStrategy ? $this->getSessionStrategy() : null)
         );
 
-        return array($listener, $tokenStorage, $service, $manager, $logger, $dispatcher, $sessionStrategy);
+        return [$listener, $tokenStorage, $service, $manager, $logger, $dispatcher, $sessionStrategy];
     }
 
     protected function getLogger()
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/RemoteUserAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/RemoteUserAuthenticationListenerTest.php
index c02812f6ce5c..ee5334c1e79b 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/RemoteUserAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/RemoteUserAuthenticationListenerTest.php
@@ -19,11 +19,11 @@ class RemoteUserAuthenticationListenerTest extends TestCase
 {
     public function testGetPreAuthenticatedData()
     {
-        $serverVars = array(
+        $serverVars = [
             'REMOTE_USER' => 'TheUser',
-        );
+        ];
 
-        $request = new Request(array(), array(), array(), array(), array(), $serverVars);
+        $request = new Request([], [], [], [], [], $serverVars);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
 
@@ -38,8 +38,8 @@ public function testGetPreAuthenticatedData()
         $method = new \ReflectionMethod($listener, 'getPreAuthenticatedData');
         $method->setAccessible(true);
 
-        $result = $method->invokeArgs($listener, array($request));
-        $this->assertSame($result, array('TheUser', null));
+        $result = $method->invokeArgs($listener, [$request]);
+        $this->assertSame($result, ['TheUser', null]);
     }
 
     /**
@@ -47,7 +47,7 @@ public function testGetPreAuthenticatedData()
      */
     public function testGetPreAuthenticatedDataNoUser()
     {
-        $request = new Request(array(), array(), array(), array(), array(), array());
+        $request = new Request([], [], [], [], [], []);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
 
@@ -62,16 +62,16 @@ public function testGetPreAuthenticatedDataNoUser()
         $method = new \ReflectionMethod($listener, 'getPreAuthenticatedData');
         $method->setAccessible(true);
 
-        $result = $method->invokeArgs($listener, array($request));
+        $result = $method->invokeArgs($listener, [$request]);
     }
 
     public function testGetPreAuthenticatedDataWithDifferentKeys()
     {
-        $userCredentials = array('TheUser', null);
+        $userCredentials = ['TheUser', null];
 
-        $request = new Request(array(), array(), array(), array(), array(), array(
+        $request = new Request([], [], [], [], [], [
             'TheUserKey' => 'TheUser',
-        ));
+        ]);
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
 
         $authenticationManager = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface')->getMock();
@@ -86,7 +86,7 @@ public function testGetPreAuthenticatedDataWithDifferentKeys()
         $method = new \ReflectionMethod($listener, 'getPreAuthenticatedData');
         $method->setAccessible(true);
 
-        $result = $method->invokeArgs($listener, array($request));
+        $result = $method->invokeArgs($listener, [$request]);
         $this->assertSame($result, $userCredentials);
     }
 }
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/SimplePreAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/SimplePreAuthenticationListenerTest.php
index 6d53e0719fe8..8739e1b62abb 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/SimplePreAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/SimplePreAuthenticationListenerTest.php
@@ -102,7 +102,7 @@ protected function setUp()
 
         $this->dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
 
-        $this->request = new Request(array(), array(), array(), array(), array(), array());
+        $this->request = new Request([], [], [], [], [], []);
 
         $this->event = $this->getMockBuilder('Symfony\Component\HttpKernel\Event\GetResponseEvent')->disableOriginalConstructor()->getMock();
         $this->event
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
index 0e61ee208ee2..d29665d55eb7 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
@@ -81,7 +81,7 @@ public function testExitUserThrowsAuthenticationExceptionIfNoCurrentToken()
      */
     public function testExitUserThrowsAuthenticationExceptionIfOriginalTokenCannotBeFound()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);
@@ -92,15 +92,15 @@ public function testExitUserThrowsAuthenticationExceptionIfOriginalTokenCannotBe
 
     public function testExitUserUpdatesToken()
     {
-        $originalToken = new UsernamePasswordToken('username', '', 'key', array());
-        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', array(new SwitchUserRole('ROLE_PREVIOUS', $originalToken))));
+        $originalToken = new UsernamePasswordToken('username', '', 'key', []);
+        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', [new SwitchUserRole('ROLE_PREVIOUS', $originalToken)]));
 
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);
 
         $listener = new SwitchUserListener($this->tokenStorage, $this->userProvider, $this->userChecker, 'provider123', $this->accessDecisionManager);
         $listener->handle($this->event);
 
-        $this->assertSame(array(), $this->request->query->all());
+        $this->assertSame([], $this->request->query->all());
         $this->assertSame('', $this->request->server->get('QUERY_STRING'));
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\RedirectResponse', $this->event->getResponse());
         $this->assertSame($this->request->getUri(), $this->event->getResponse()->getTargetUrl());
@@ -118,7 +118,7 @@ public function testExitUserDispatchesEventWithRefreshedUser()
             ->with($originalUser)
             ->willReturn($refreshedUser);
         $originalToken = new UsernamePasswordToken($originalUser, '', 'key');
-        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', array(new SwitchUserRole('ROLE_PREVIOUS', $originalToken))));
+        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', [new SwitchUserRole('ROLE_PREVIOUS', $originalToken)]));
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);
 
         $dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
@@ -142,7 +142,7 @@ public function testExitUserDoesNotDispatchEventWithStringUser()
             ->expects($this->never())
             ->method('refreshUser');
         $originalToken = new UsernamePasswordToken($originalUser, '', 'key');
-        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', array(new SwitchUserRole('ROLE_PREVIOUS', $originalToken))));
+        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', [new SwitchUserRole('ROLE_PREVIOUS', $originalToken)]));
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);
 
         $dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
@@ -160,13 +160,13 @@ public function testExitUserDoesNotDispatchEventWithStringUser()
      */
     public function testSwitchUserIsDisallowed()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', 'kuba');
 
         $this->accessDecisionManager->expects($this->once())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'))
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'])
             ->will($this->returnValue(false));
 
         $listener = new SwitchUserListener($this->tokenStorage, $this->userProvider, $this->userChecker, 'provider123', $this->accessDecisionManager);
@@ -175,14 +175,14 @@ public function testSwitchUserIsDisallowed()
 
     public function testSwitchUser()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
-        $user = new User('username', 'password', array());
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
+        $user = new User('username', 'password', []);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', 'kuba');
 
         $this->accessDecisionManager->expects($this->once())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'))
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'])
             ->will($this->returnValue(true));
 
         $this->userProvider->expects($this->once())
@@ -194,25 +194,25 @@ public function testSwitchUser()
         $listener = new SwitchUserListener($this->tokenStorage, $this->userProvider, $this->userChecker, 'provider123', $this->accessDecisionManager);
         $listener->handle($this->event);
 
-        $this->assertSame(array(), $this->request->query->all());
+        $this->assertSame([], $this->request->query->all());
         $this->assertSame('', $this->request->server->get('QUERY_STRING'));
         $this->assertInstanceOf('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken', $this->tokenStorage->getToken());
     }
 
     public function testSwitchUserKeepsOtherQueryStringParameters()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
-        $user = new User('username', 'password', array());
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
+        $user = new User('username', 'password', []);
 
         $this->tokenStorage->setToken($token);
-        $this->request->query->replace(array(
+        $this->request->query->replace([
             '_switch_user' => 'kuba',
             'page' => 3,
             'section' => 2,
-        ));
+        ]);
 
         $this->accessDecisionManager->expects($this->once())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'))
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'])
             ->will($this->returnValue(true));
 
         $this->userProvider->expects($this->once())
@@ -230,17 +230,17 @@ public function testSwitchUserKeepsOtherQueryStringParameters()
 
     public function testSwitchUserWithReplacedToken()
     {
-        $user = new User('username', 'password', array());
-        $token = new UsernamePasswordToken($user, '', 'provider123', array('ROLE_FOO'));
+        $user = new User('username', 'password', []);
+        $token = new UsernamePasswordToken($user, '', 'provider123', ['ROLE_FOO']);
 
-        $user = new User('replaced', 'password', array());
-        $replacedToken = new UsernamePasswordToken($user, '', 'provider123', array('ROLE_BAR'));
+        $user = new User('replaced', 'password', []);
+        $replacedToken = new UsernamePasswordToken($user, '', 'provider123', ['ROLE_BAR']);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', 'kuba');
 
         $this->accessDecisionManager->expects($this->any())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'))
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'])
             ->will($this->returnValue(true));
 
         $this->userProvider->expects($this->any())
@@ -269,14 +269,14 @@ public function testSwitchUserWithReplacedToken()
 
     public function testSwitchUserStateless()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
-        $user = new User('username', 'password', array());
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
+        $user = new User('username', 'password', []);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', 'kuba');
 
         $this->accessDecisionManager->expects($this->once())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'))
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'])
             ->will($this->returnValue(true));
 
         $this->userProvider->expects($this->once())
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordFormAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordFormAuthenticationListenerTest.php
index 6ab543225c69..198ee6566dfd 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordFormAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordFormAuthenticationListenerTest.php
@@ -31,7 +31,7 @@ class UsernamePasswordFormAuthenticationListenerTest extends TestCase
      */
     public function testHandleWhenUsernameLength($username, $ok)
     {
-        $request = Request::create('/login_check', 'POST', array('_username' => $username));
+        $request = Request::create('/login_check', 'POST', ['_username' => $username]);
         $request->setSession($this->getMockBuilder('Symfony\Component\HttpFoundation\Session\SessionInterface')->getMock());
 
         $httpUtils = $this->getMockBuilder('Symfony\Component\Security\Http\HttpUtils')->getMock();
@@ -63,7 +63,7 @@ public function testHandleWhenUsernameLength($username, $ok)
             'TheProviderKey',
             $this->getMockBuilder('Symfony\Component\Security\Http\Authentication\AuthenticationSuccessHandlerInterface')->getMock(),
             $failureHandler,
-            array('require_previous_session' => false)
+            ['require_previous_session' => false]
         );
 
         $event = $this->getMockBuilder('Symfony\Component\HttpKernel\Event\GetResponseEvent')->disableOriginalConstructor()->getMock();
@@ -83,7 +83,7 @@ public function testHandleWhenUsernameLength($username, $ok)
      */
     public function testHandleNonStringUsername($postOnly)
     {
-        $request = Request::create('/login_check', 'POST', array('_username' => array()));
+        $request = Request::create('/login_check', 'POST', ['_username' => []]);
         $request->setSession($this->getMockBuilder('Symfony\Component\HttpFoundation\Session\SessionInterface')->getMock());
         $listener = new UsernamePasswordFormAuthenticationListener(
             new TokenStorage(),
@@ -93,7 +93,7 @@ public function testHandleNonStringUsername($postOnly)
             'foo',
             new DefaultAuthenticationSuccessHandler($httpUtils),
             new DefaultAuthenticationFailureHandler($this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock(), $httpUtils),
-            array('require_previous_session' => false, 'post_only' => $postOnly)
+            ['require_previous_session' => false, 'post_only' => $postOnly]
         );
         $event = new GetResponseEvent($this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock(), $request, HttpKernelInterface::MASTER_REQUEST);
         $listener->handle($event);
@@ -101,17 +101,17 @@ public function testHandleNonStringUsername($postOnly)
 
     public function postOnlyDataProvider()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     public function getUsernameForLength()
     {
-        return array(
-            array(str_repeat('x', Security::MAX_USERNAME_LENGTH + 1), false),
-            array(str_repeat('x', Security::MAX_USERNAME_LENGTH - 1), true),
-        );
+        return [
+            [str_repeat('x', Security::MAX_USERNAME_LENGTH + 1), false],
+            [str_repeat('x', Security::MAX_USERNAME_LENGTH - 1), true],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordJsonAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordJsonAuthenticationListenerTest.php
index d8bb77bb9e81..ed7acfbe5d7a 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordJsonAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordJsonAuthenticationListenerTest.php
@@ -36,7 +36,7 @@ class UsernamePasswordJsonAuthenticationListenerTest extends TestCase
      */
     private $listener;
 
-    private function createListener(array $options = array(), $success = true, $matchCheckPath = true)
+    private function createListener(array $options = [], $success = true, $matchCheckPath = true)
     {
         $tokenStorage = $this->getMockBuilder(TokenStorageInterface::class)->getMock();
         $httpUtils = $this->getMockBuilder(HttpUtils::class)->getMock();
@@ -66,7 +66,7 @@ private function createListener(array $options = array(), $success = true, $matc
     public function testHandleSuccessIfRequestContentTypeIsJson()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"username": "dunglas", "password": "foo"}');
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"username": "dunglas", "password": "foo"}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -76,7 +76,7 @@ public function testHandleSuccessIfRequestContentTypeIsJson()
     public function testSuccessIfRequestFormatIsJsonLD()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array(), '{"username": "dunglas", "password": "foo"}');
+        $request = new Request([], [], [], [], [], [], '{"username": "dunglas", "password": "foo"}');
         $request->setRequestFormat('json-ld');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
@@ -86,8 +86,8 @@ public function testSuccessIfRequestFormatIsJsonLD()
 
     public function testHandleFailure()
     {
-        $this->createListener(array(), false);
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"username": "dunglas", "password": "foo"}');
+        $this->createListener([], false);
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"username": "dunglas", "password": "foo"}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -96,8 +96,8 @@ public function testHandleFailure()
 
     public function testUsePath()
     {
-        $this->createListener(array('username_path' => 'user.login', 'password_path' => 'user.pwd'));
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"user": {"login": "dunglas", "pwd": "foo"}}');
+        $this->createListener(['username_path' => 'user.login', 'password_path' => 'user.pwd']);
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"user": {"login": "dunglas", "pwd": "foo"}}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -125,7 +125,7 @@ public function testAttemptAuthenticationNoJson()
     public function testAttemptAuthenticationNoUsername()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"usr": "dunglas", "password": "foo"}');
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"usr": "dunglas", "password": "foo"}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -138,7 +138,7 @@ public function testAttemptAuthenticationNoUsername()
     public function testAttemptAuthenticationNoPassword()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"username": "dunglas", "pass": "foo"}');
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"username": "dunglas", "pass": "foo"}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -151,7 +151,7 @@ public function testAttemptAuthenticationNoPassword()
     public function testAttemptAuthenticationUsernameNotAString()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"username": 1, "password": "foo"}');
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"username": 1, "password": "foo"}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -164,7 +164,7 @@ public function testAttemptAuthenticationUsernameNotAString()
     public function testAttemptAuthenticationPasswordNotAString()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"username": "dunglas", "password": 1}');
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"username": "dunglas", "password": 1}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -174,7 +174,7 @@ public function testAttemptAuthenticationUsernameTooLong()
     {
         $this->createListener();
         $username = str_repeat('x', Security::MAX_USERNAME_LENGTH + 1);
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), sprintf('{"username": "%s", "password": 1}', $username));
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], sprintf('{"username": "%s", "password": 1}', $username));
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -183,8 +183,8 @@ public function testAttemptAuthenticationUsernameTooLong()
 
     public function testDoesNotAttemptAuthenticationIfRequestPathDoesNotMatchCheckPath()
     {
-        $this->createListener(array('check_path' => '/'), true, false);
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'));
+        $this->createListener(['check_path' => '/'], true, false);
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json']);
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
         $event->setResponse(new Response('original'));
 
@@ -195,7 +195,7 @@ public function testDoesNotAttemptAuthenticationIfRequestPathDoesNotMatchCheckPa
     public function testDoesNotAttemptAuthenticationIfRequestContentTypeIsNotJson()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array(), '{"username": "dunglas", "password": "foo"}');
+        $request = new Request([], [], [], [], [], [], '{"username": "dunglas", "password": "foo"}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
         $event->setResponse(new Response('original'));
 
@@ -205,8 +205,8 @@ public function testDoesNotAttemptAuthenticationIfRequestContentTypeIsNotJson()
 
     public function testAttemptAuthenticationIfRequestPathMatchesCheckPath()
     {
-        $this->createListener(array('check_path' => '/'));
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"username": "dunglas", "password": "foo"}');
+        $this->createListener(['check_path' => '/']);
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"username": "dunglas", "password": "foo"}');
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
         $this->listener->handle($event);
@@ -216,7 +216,7 @@ public function testAttemptAuthenticationIfRequestPathMatchesCheckPath()
     public function testNoErrorOnMissingSessionStrategy()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"username": "dunglas", "password": "foo"}');
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"username": "dunglas", "password": "foo"}');
         $this->configurePreviousSession($request);
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
@@ -227,7 +227,7 @@ public function testNoErrorOnMissingSessionStrategy()
     public function testMigratesViaSessionStrategy()
     {
         $this->createListener();
-        $request = new Request(array(), array(), array(), array(), array(), array('HTTP_CONTENT_TYPE' => 'application/json'), '{"username": "dunglas", "password": "foo"}');
+        $request = new Request([], [], [], [], [], ['HTTP_CONTENT_TYPE' => 'application/json'], '{"username": "dunglas", "password": "foo"}');
         $this->configurePreviousSession($request);
         $event = new GetResponseEvent($this->getMockBuilder(KernelInterface::class)->getMock(), $request, KernelInterface::MASTER_REQUEST);
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/X509AuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/X509AuthenticationListenerTest.php
index 07206202ab2c..c55eaae0f315 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/X509AuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/X509AuthenticationListenerTest.php
@@ -22,7 +22,7 @@ class X509AuthenticationListenerTest extends TestCase
      */
     public function testGetPreAuthenticatedData($user, $credentials)
     {
-        $serverVars = array();
+        $serverVars = [];
         if ('' !== $user) {
             $serverVars['SSL_CLIENT_S_DN_Email'] = $user;
         }
@@ -30,7 +30,7 @@ public function testGetPreAuthenticatedData($user, $credentials)
             $serverVars['SSL_CLIENT_S_DN'] = $credentials;
         }
 
-        $request = new Request(array(), array(), array(), array(), array(), $serverVars);
+        $request = new Request([], [], [], [], [], $serverVars);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
 
@@ -41,16 +41,16 @@ public function testGetPreAuthenticatedData($user, $credentials)
         $method = new \ReflectionMethod($listener, 'getPreAuthenticatedData');
         $method->setAccessible(true);
 
-        $result = $method->invokeArgs($listener, array($request));
-        $this->assertSame($result, array($user, $credentials));
+        $result = $method->invokeArgs($listener, [$request]);
+        $this->assertSame($result, [$user, $credentials]);
     }
 
     public static function dataProviderGetPreAuthenticatedData()
     {
-        return array(
-            'validValues' => array('TheUser', 'TheCredentials'),
-            'noCredentials' => array('TheUser', ''),
-        );
+        return [
+            'validValues' => ['TheUser', 'TheCredentials'],
+            'noCredentials' => ['TheUser', ''],
+        ];
     }
 
     /**
@@ -59,7 +59,7 @@ public static function dataProviderGetPreAuthenticatedData()
     public function testGetPreAuthenticatedDataNoUser($emailAddress)
     {
         $credentials = 'CN=Sample certificate DN/emailAddress='.$emailAddress;
-        $request = new Request(array(), array(), array(), array(), array(), array('SSL_CLIENT_S_DN' => $credentials));
+        $request = new Request([], [], [], [], [], ['SSL_CLIENT_S_DN' => $credentials]);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
 
@@ -70,16 +70,16 @@ public function testGetPreAuthenticatedDataNoUser($emailAddress)
         $method = new \ReflectionMethod($listener, 'getPreAuthenticatedData');
         $method->setAccessible(true);
 
-        $result = $method->invokeArgs($listener, array($request));
-        $this->assertSame($result, array($emailAddress, $credentials));
+        $result = $method->invokeArgs($listener, [$request]);
+        $this->assertSame($result, [$emailAddress, $credentials]);
     }
 
     public static function dataProviderGetPreAuthenticatedDataNoUser()
     {
-        return array(
-            'basicEmailAddress' => array('cert@example.com'),
-            'emailAddressWithPlusSign' => array('cert+something@example.com'),
-        );
+        return [
+            'basicEmailAddress' => ['cert@example.com'],
+            'emailAddressWithPlusSign' => ['cert+something@example.com'],
+        ];
     }
 
     /**
@@ -87,7 +87,7 @@ public static function dataProviderGetPreAuthenticatedDataNoUser()
      */
     public function testGetPreAuthenticatedDataNoData()
     {
-        $request = new Request(array(), array(), array(), array(), array(), array());
+        $request = new Request([], [], [], [], [], []);
 
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
 
@@ -98,17 +98,17 @@ public function testGetPreAuthenticatedDataNoData()
         $method = new \ReflectionMethod($listener, 'getPreAuthenticatedData');
         $method->setAccessible(true);
 
-        $result = $method->invokeArgs($listener, array($request));
+        $result = $method->invokeArgs($listener, [$request]);
     }
 
     public function testGetPreAuthenticatedDataWithDifferentKeys()
     {
-        $userCredentials = array('TheUser', 'TheCredentials');
+        $userCredentials = ['TheUser', 'TheCredentials'];
 
-        $request = new Request(array(), array(), array(), array(), array(), array(
+        $request = new Request([], [], [], [], [], [
             'TheUserKey' => 'TheUser',
             'TheCredentialsKey' => 'TheCredentials',
-        ));
+        ]);
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
 
         $authenticationManager = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface')->getMock();
@@ -118,7 +118,7 @@ public function testGetPreAuthenticatedDataWithDifferentKeys()
         $method = new \ReflectionMethod($listener, 'getPreAuthenticatedData');
         $method->setAccessible(true);
 
-        $result = $method->invokeArgs($listener, array($request));
+        $result = $method->invokeArgs($listener, [$request]);
         $this->assertSame($result, $userCredentials);
     }
 }
diff --git a/src/Symfony/Component/Security/Http/Tests/FirewallMapTest.php b/src/Symfony/Component/Security/Http/Tests/FirewallMapTest.php
index 5cd9d7dea353..04fe3b4ea305 100644
--- a/src/Symfony/Component/Security/Http/Tests/FirewallMapTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/FirewallMapTest.php
@@ -31,7 +31,7 @@ public function testGetListeners()
             ->will($this->returnValue(false))
         ;
 
-        $map->add($notMatchingMatcher, array($this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()));
+        $map->add($notMatchingMatcher, [$this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()]);
 
         $matchingMatcher = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestMatcher')->getMock();
         $matchingMatcher
@@ -43,7 +43,7 @@ public function testGetListeners()
         $theListener = $this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock();
         $theException = $this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ExceptionListener')->disableOriginalConstructor()->getMock();
 
-        $map->add($matchingMatcher, array($theListener), $theException);
+        $map->add($matchingMatcher, [$theListener], $theException);
 
         $tooLateMatcher = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestMatcher')->getMock();
         $tooLateMatcher
@@ -51,11 +51,11 @@ public function testGetListeners()
             ->method('matches')
         ;
 
-        $map->add($tooLateMatcher, array($this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()));
+        $map->add($tooLateMatcher, [$this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()]);
 
         list($listeners, $exception) = $map->getListeners($request);
 
-        $this->assertEquals(array($theListener), $listeners);
+        $this->assertEquals([$theListener], $listeners);
         $this->assertEquals($theException, $exception);
     }
 
@@ -73,12 +73,12 @@ public function testGetListenersWithAnEntryHavingNoRequestMatcher()
             ->will($this->returnValue(false))
         ;
 
-        $map->add($notMatchingMatcher, array($this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()));
+        $map->add($notMatchingMatcher, [$this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()]);
 
         $theListener = $this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock();
         $theException = $this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ExceptionListener')->disableOriginalConstructor()->getMock();
 
-        $map->add(null, array($theListener), $theException);
+        $map->add(null, [$theListener], $theException);
 
         $tooLateMatcher = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestMatcher')->getMock();
         $tooLateMatcher
@@ -86,11 +86,11 @@ public function testGetListenersWithAnEntryHavingNoRequestMatcher()
             ->method('matches')
         ;
 
-        $map->add($tooLateMatcher, array($this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()));
+        $map->add($tooLateMatcher, [$this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()]);
 
         list($listeners, $exception) = $map->getListeners($request);
 
-        $this->assertEquals(array($theListener), $listeners);
+        $this->assertEquals([$theListener], $listeners);
         $this->assertEquals($theException, $exception);
     }
 
@@ -108,11 +108,11 @@ public function testGetListenersWithNoMatchingEntry()
             ->will($this->returnValue(false))
         ;
 
-        $map->add($notMatchingMatcher, array($this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()));
+        $map->add($notMatchingMatcher, [$this->getMockBuilder('Symfony\Component\Security\Http\Firewall\ListenerInterface')->getMock()]);
 
         list($listeners, $exception) = $map->getListeners($request);
 
-        $this->assertEquals(array(), $listeners);
+        $this->assertEquals([], $listeners);
         $this->assertNull($exception);
     }
 }
diff --git a/src/Symfony/Component/Security/Http/Tests/FirewallTest.php b/src/Symfony/Component/Security/Http/Tests/FirewallTest.php
index 66dad46152c0..9113890b5e74 100644
--- a/src/Symfony/Component/Security/Http/Tests/FirewallTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/FirewallTest.php
@@ -37,7 +37,7 @@ public function testOnKernelRequestRegistersExceptionListener()
             ->expects($this->once())
             ->method('getListeners')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(array(), $listener)))
+            ->will($this->returnValue([[], $listener]))
         ;
 
         $event = new GetResponseEvent($this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock(), $request, HttpKernelInterface::MASTER_REQUEST);
@@ -66,16 +66,16 @@ public function tes
10000
tOnKernelRequestStopsWhenThereIsAResponse()
         $map
             ->expects($this->once())
             ->method('getListeners')
-            ->will($this->returnValue(array(array($first, $second), null)))
+            ->will($this->returnValue([[$first, $second], null]))
         ;
 
         $event = $this->getMockBuilder('Symfony\Component\HttpKernel\Event\GetResponseEvent')
-            ->setMethods(array('hasResponse'))
-            ->setConstructorArgs(array(
+            ->setMethods(['hasResponse'])
+            ->setConstructorArgs([
                 $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock(),
                 $this->getMockBuilder('Symfony\Component\HttpFoundation\Request')->disableOriginalConstructor()->disableOriginalClone()->getMock(),
                 HttpKernelInterface::MASTER_REQUEST,
-            ))
+            ])
             ->getMock()
         ;
         $event
diff --git a/src/Symfony/Component/Security/Http/Tests/HttpUtilsTest.php b/src/Symfony/Component/Security/Http/Tests/HttpUtilsTest.php
index ace88e328a2e..5368f4683c74 100644
--- a/src/Symfony/Component/Security/Http/Tests/HttpUtilsTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/HttpUtilsTest.php
@@ -67,13 +67,13 @@ public function testCreateRedirectResponseWithBadRequestsDomain($url)
 
     public function badRequestDomainUrls()
     {
-        return array(
-            array('http://pirate.net/foo'),
-            array('http:\\\\pirate.net/foo'),
-            array('http:/\\pirate.net/foo'),
-            array('http:\\/pirate.net/foo'),
-            array('http://////pirate.net/foo'),
-        );
+        return [
+            ['http://pirate.net/foo'],
+            ['http:\\\\pirate.net/foo'],
+            ['http:/\\pirate.net/foo'],
+            ['http:\\/pirate.net/foo'],
+            ['http://////pirate.net/foo'],
+        ];
     }
 
     public function testCreateRedirectResponseWithProtocolRelativeTarget()
@@ -91,7 +91,7 @@ public function testCreateRedirectResponseWithRouteName()
         $urlGenerator
             ->expects($this->any())
             ->method('generate')
-            ->with('foobar', array(), UrlGeneratorInterface::ABSOLUTE_URL)
+            ->with('foobar', [], UrlGeneratorInterface::ABSOLUTE_URL)
             ->will($this->returnValue('http://localhost/foo/bar'))
         ;
         $urlGenerator
@@ -173,11 +173,11 @@ public function testCreateRequestPassesSecurityContextAttributesToTheNewRequest(
 
     public function provideSecurityContextAttributes()
     {
-        return array(
-            array(Security::AUTHENTICATION_ERROR),
-            array(Security::ACCESS_DENIED_ERROR),
-            array(Security::LAST_USERNAME),
-        );
+        return [
+            [Security::AUTHENTICATION_ERROR],
+            [Security::ACCESS_DENIED_ERROR],
+            [Security::LAST_USERNAME],
+        ];
     }
 
     public function testCheckRequestPath()
@@ -215,7 +215,7 @@ public function testCheckRequestPathWithUrlMatcherAndMethodNotAllowed()
             ->expects($this->any())
             ->method('matchRequest')
             ->with($request)
-            ->willThrowException(new MethodNotAllowedException(array()))
+            ->willThrowException(new MethodNotAllowedException([]))
         ;
 
         $utils = new HttpUtils(null, $urlMatcher);
@@ -229,7 +229,7 @@ public function testCheckRequestPathWithUrlMatcherAndResourceFoundByUrl()
             ->expects($this->any())
             ->method('match')
             ->with('/foo/bar')
-            ->will($this->returnValue(array('_route' => 'foobar')))
+            ->will($this->returnValue(['_route' => 'foobar']))
         ;
 
         $utils = new HttpUtils(null, $urlMatcher);
@@ -244,7 +244,7 @@ public function testCheckRequestPathWithUrlMatcherAndResourceFoundByRequest()
             ->expects($this->any())
             ->method('matchRequest')
             ->with($request)
-            ->will($this->returnValue(array('_route' => 'foobar')))
+            ->will($this->returnValue(['_route' => 'foobar']))
         ;
 
         $utils = new HttpUtils(null, $urlMatcher);
@@ -273,7 +273,7 @@ public function testCheckPathWithoutRouteParam()
         $urlMatcher
             ->expects($this->any())
             ->method('match')
-            ->willReturn(array('_controller' => 'PathController'))
+            ->willReturn(['_controller' => 'PathController'])
         ;
 
         $utils = new HttpUtils(null, $urlMatcher);
diff --git a/src/Symfony/Component/Security/Http/Tests/Logout/CookieClearingLogoutHandlerTest.php b/src/Symfony/Component/Security/Http/Tests/Logout/CookieClearingLogoutHandlerTest.php
index f199d0ee03cb..8dcc10338b76 100644
--- a/src/Symfony/Component/Security/Http/Tests/Logout/CookieClearingLogoutHandlerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Logout/CookieClearingLogoutHandlerTest.php
@@ -25,7 +25,7 @@ public function testLogout()
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
-        $handler = new CookieClearingLogoutHandler(array('foo' => array('path' => '/foo', 'domain' => 'foo.foo'), 'foo2' => array('path' => null, 'domain' => null)));
+        $handler = new CookieClearingLogoutHandler(['foo' => ['path' => '/foo', 'domain' => 'foo.foo'], 'foo2' => ['path' => null, 'domain' => null]]);
 
         $cookies = $response->headers->getCookies();
         $this->assertCount(0, $cookies);
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/AbstractRememberMeServicesTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/AbstractRememberMeServicesTest.php
index 5a35dd09ee21..38b8474ffc38 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/AbstractRememberMeServicesTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/AbstractRememberMeServicesTest.php
@@ -21,7 +21,7 @@ class AbstractRememberMeServicesTest extends TestCase
 {
     public function testGetRememberMeParameter()
     {
-        $service = $this->getService(null, array('remember_me_parameter' => 'foo'));
+        $service = $this->getService(null, ['remember_me_parameter' => 'foo']);
 
         $this->assertEquals('foo', $service->getRememberMeParameter());
     }
@@ -34,7 +34,7 @@ public function testGetSecret()
 
     public function testAutoLoginReturnsNullWhenNoCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
 
         $this->assertNull($service->autoLogin(new Request()));
     }
@@ -44,7 +44,7 @@ public function testAutoLoginReturnsNullWhenNoCookie()
      */
     public function testAutoLoginThrowsExceptionWhenImplementationDoesNotReturnUserInterface()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
         $request->cookies->set('foo', 'foo');
 
@@ -59,7 +59,7 @@ public function testAutoLoginThrowsExceptionWhenImplementationDoesNotReturnUserI
 
     public function testAutoLogin()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
         $request->cookies->set('foo', 'foo');
 
@@ -67,7 +67,7 @@ public function testAutoLogin()
         $user
             ->expects($this->once())
             ->method('getRoles')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $service
@@ -105,15 +105,15 @@ public function testLogout(array $options)
 
     public function provideOptionsForLogout()
     {
-        return array(
-            array(array('name' => 'foo', 'path' => '/', 'domain' => null, 'secure' => false, 'httponly' => true)),
-            array(array('name' => 'foo', 'path' => '/bar', 'domain' => 'baz.com', 'secure' => true, 'httponly' => false)),
-        );
+        return [
+            [['name' => 'foo', 'path' => '/', 'domain' => null, 'secure' => false, 'httponly' => true]],
+            [['name' => 'foo', 'path' => '/bar', 'domain' => 'baz.com', 'secure' => true, 'httponly' => false]],
+        ];
     }
 
     public function testLoginFail()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
 
         $service->loginFail($request);
@@ -123,7 +123,7 @@ public function testLoginFail()
 
     public function testLoginSuccessIsNotProcessedWhenTokenDoesNotContainUserInterfaceImplementation()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null]);
         $request = new Request();
         $response = new Response();
         $account = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
@@ -146,7 +146,7 @@ public function testLoginSuccessIsNotProcessedWhenTokenDoesNotContainUserInterfa
 
     public function testLoginSuccessIsNotProcessedWhenRememberMeIsNotRequested()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'always_remember_me' => false, 'remember_me_parameter' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'always_remember_me' => false, 'remember_me_parameter' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
         $response = new Response();
         $account = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
@@ -170,7 +170,7 @@ public function testLoginSuccessIsNotProcessedWhenRememberMeIsNotRequested()
 
     public function testLoginSuccessWhenRememberMeAlwaysIsTrue()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null]);
         $request = new Request();
         $response = new Response();
         $account = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
@@ -195,10 +195,10 @@ public function testLoginSuccessWhenRememberMeAlwaysIsTrue()
      */
     public function testLoginSuccessWhenRememberMeParameterWithPathIsPositive($value)
     {
-        $service = $this->getService(null, array('name' => 'foo', 'always_remember_me' => false, 'remember_me_parameter' => 'foo[bar]', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'always_remember_me' => false, 'remember_me_parameter' => 'foo[bar]', 'path' => null, 'domain' => null]);
 
         $request = new Request();
-        $request->request->set('foo', array('bar' => $value));
+        $request->request->set('foo', ['bar' => $value]);
         $response = new Response();
         $account = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -222,7 +222,7 @@ public function testLoginSuccessWhenRememberMeParameterWithPathIsPositive($value
      */
     public function testLoginSuccessWhenRememberMeParameterIsPositive($value)
     {
-        $service = $this->getService(null, array('name' => 'foo', 'always_remember_me' => false, 'remember_me_parameter' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'always_remember_me' => false, 'remember_me_parameter' => 'foo', 'path' => null, 'domain' => null]);
 
         $request = new Request();
         $request->request->set('foo', $value);
@@ -246,24 +246,24 @@ public function testLoginSuccessWhenRememberMeParameterIsPositive($value)
 
     public function getPositiveRememberMeParameterValues()
     {
-        return array(
-            array('true'),
-            array('1'),
-            array('on'),
-            array('yes'),
-            array(true),
-        );
+        return [
+            ['true'],
+            ['1'],
+            ['on'],
+            ['yes'],
+            [true],
+        ];
     }
 
     public function testEncodeCookieAndDecodeCookieAreInvertible()
     {
-        $cookieParts = array('aa', 'bb', 'cc');
+        $cookieParts = ['aa', 'bb', 'cc'];
         $service = $this->getService();
 
-        $encoded = $this->callProtected($service, 'encodeCookie', array($cookieParts));
+        $encoded = $this->callProtected($service, 'encodeCookie', [$cookieParts]);
         $this->assertInternalType('string', $encoded);
 
-        $decoded = $this->callProtected($service, 'decodeCookie', array($encoded));
+        $decoded = $this->callProtected($service, 'decodeCookie', [$encoded]);
         $this->assertSame($cookieParts, $decoded);
     }
 
@@ -273,21 +273,21 @@ public function testEncodeCookieAndDecodeCookieAreInvertible()
      */
     public function testThereShouldBeNoCookieDelimiterInCookieParts()
     {
-        $cookieParts = array('aa', 'b'.AbstractRememberMeServices::COOKIE_DELIMITER.'b', 'cc');
+        $cookieParts = ['aa', 'b'.AbstractRememberMeServices::COOKIE_DELIMITER.'b', 'cc'];
         $service = $this->getService();
 
-        $this->callProtected($service, 'encodeCookie', array($cookieParts));
+        $this->callProtected($service, 'encodeCookie', [$cookieParts]);
     }
 
-    protected function getService($userProvider = null, $options = array(), $logger = null)
+    protected function getService($userProvider = null, $options = [], $logger = null)
     {
         if (null === $userProvider) {
             $userProvider = $this->getProvider();
         }
 
-        return $this->getMockForAbstractClass('Symfony\Component\Security\Http\RememberMe\AbstractRememberMeServices', array(
-            array($userProvider), 'foosecret', 'fookey', $options, $logger,
-        ));
+        return $this->getMockForAbstractClass('Symfony\Component\Security\Http\RememberMe\AbstractRememberMeServices', [
+            [$userProvider], 'foosecret', 'fookey', $options, $logger,
+        ]);
     }
 
     protected function getProvider()
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
index 494723fb29a2..529b050c40b3 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
@@ -35,14 +35,14 @@ public static function setUpBeforeClass()
 
     public function testAutoLoginReturnsNullWhenNoCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo']);
 
         $this->assertNull($service->autoLogin(new Request()));
     }
 
     public function testAutoLoginThrowsExceptionOnInvalidCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo']);
         $request = new Request();
         $request->request->set('foo', 'true');
         $request->cookies->set('foo', 'foo');
@@ -53,13 +53,13 @@ public function testAutoLoginThrowsExceptionOnInvalidCookie()
 
     public function testAutoLoginThrowsExceptionOnNonExistentToken()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo']);
         $request = new Request();
         $request->request->set('foo', 'true');
-        $request->cookies->set('foo', $this->encodeCookie(array(
+        $request->cookies->set('foo', $this->encodeCookie([
             $series = 'fooseries',
             $tokenValue = 'foovalue',
-        )));
+        ]));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $tokenProvider
@@ -76,9 +76,9 @@ public function testAutoLoginThrowsExceptionOnNonExistentToken()
     public function testAutoLoginReturnsNullOnNonExistentUser()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600, 'secure' => false, 'httponly' => false));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600, 'secure' => false, 'httponly' => false]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $tokenProvider
@@ -101,9 +101,9 @@ public function testAutoLoginReturnsNullOnNonExistentUser()
     public function testAutoLoginThrowsExceptionOnStolenCookieAndRemovesItFromThePersistentBackend()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $service->setTokenProvider($tokenProvider);
@@ -132,9 +132,9 @@ public function testAutoLoginThrowsExceptionOnStolenCookieAndRemovesItFromThePer
 
     public function testAutoLoginDoesNotAcceptAnExpiredCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $tokenProvider
@@ -155,7 +155,7 @@ public function testAutoLogin()
         $user
             ->expects($this->once())
             ->method('getRoles')
-            ->will($this->returnValue(array('ROLE_FOO')))
+            ->will($this->returnValue(['ROLE_FOO']))
         ;
 
         $userProvider = $this->getProvider();
@@ -166,9 +166,9 @@ public function testAutoLogin()
             ->will($this->returnValue($user))
         ;
 
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'secure' => false, 'httponly' => false, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'secure' => false, 'httponly' => false, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $tokenProvider
@@ -189,9 +189,9 @@ public function testAutoLogin()
 
     public function testLogout()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => '/foo', 'domain' => 'foodomain.foo', 'secure' => true, 'httponly' => false));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => '/foo', 'domain' => 'foodomain.foo', 'secure' => true, 'httponly' => false]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
@@ -216,7 +216,7 @@ public function testLogout()
 
     public function testLogoutSimplyIgnoresNonSetRequestCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -238,7 +238,7 @@ public function testLogoutSimplyIgnoresNonSetRequestCookie()
 
     public function testLogoutSimplyIgnoresInvalidCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
         $request->cookies->set('foo', 'somefoovalue');
         $response = new Response();
@@ -258,7 +258,7 @@ public function testLogoutSimplyIgnoresInvalidCookie()
 
     public function testLoginFail()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
 
         $this->assertFalse($request->attributes->has(RememberMeServicesInterface::COOKIE_ATTR_NAME));
@@ -268,7 +268,7 @@ public function testLoginFail()
 
     public function testLoginSuccessSetsCookieWhenLoggedInWithNonRememberMeTokenInterfaceImplementation()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'domain' => 'myfoodomain.foo', 'path' => '/foo/path', 'secure' => true, 'httponly' => true, 'lifetime' => 3600, 'always_remember_me' => true));
+        $service = $this->getService(null, ['name' => 'foo', 'domain' => 'myfoodomain.foo', 'path' => '/foo/path', 'secure' => true, 'httponly' => true, 'lifetime' => 3600, 'always_remember_me' => true]);
         $request = new Request();
         $response = new Response();
 
@@ -316,13 +316,13 @@ protected function encodeCookie(array $parts)
         return $r->invoke($service, $parts);
     }
 
-    protected function getService($userProvider = null, $options = array(), $logger = null)
+    protected function getService($userProvider = null, $options = [], $logger = null)
     {
         if (null === $userProvider) {
             $userProvider = $this->getProvider();
         }
 
-        return new PersistentTokenBasedRememberMeServices(array($userProvider), 'foosecret', 'fookey', $options, $logger);
+        return new PersistentTokenBasedRememberMeServices([$userProvider], 'foosecret', 'fookey', $options, $logger);
     }
 
     protected function getProvider()
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/ResponseListenerTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/ResponseListenerTest.php
index ba5906839467..501d3850fa64 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/ResponseListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/ResponseListenerTest.php
@@ -26,9 +26,9 @@ public function testRememberMeCookieIsSentWithResponse()
     {
         $cookie = new Cookie('rememberme');
 
-        $request = $this->getRequest(array(
+        $request = $this->getRequest([
             RememberMeServicesInterface::COOKIE_ATTR_NAME => $cookie,
-        ));
+        ]);
 
         $response = $this->getResponse();
         $response->headers->expects($this->once())->method('setCookie')->with($cookie);
@@ -41,9 +41,9 @@ public function testRememberMeCookieIsNotSendWithResponseForSubRequests()
     {
         $cookie = new Cookie('rememberme');
 
-        $request = $this->getRequest(array(
+        $request = $this->getRequest([
             RememberMeServicesInterface::COOKIE_ATTR_NAME => $cookie,
-        ));
+        ]);
 
         $response = $this->getResponse();
         $response->headers->expects($this->never())->method('setCookie');
@@ -67,10 +67,10 @@ public function testItSubscribesToTheOnKernelResponseEvent()
     {
         $listener = new ResponseListener();
 
-        $this->assertSame(array(KernelEvents::RESPONSE => 'onKernelResponse'), ResponseListener::getSubscribedEvents());
+        $this->assertSame([KernelEvents::RESPONSE => 'onKernelResponse'], ResponseListener::getSubscribedEvents());
     }
 
-    private function getRequest(array $attributes = array())
+    private function getRequest(array $attributes = [])
     {
         $request = new Request();
 
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
index 31854142a5d6..f0d938de8406 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
@@ -23,14 +23,14 @@ class TokenBasedRememberMeServicesTest extends TestCase
 {
     public function testAutoLoginReturnsNullWhenNoCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo']);
 
         $this->assertNull($service->autoLogin(new Request()));
     }
 
     public function testAutoLoginThrowsExceptionOnInvalidCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo']);
         $request = new Request();
         $request->request->set('foo', 'true');
         $request->cookies->set('foo', 'foo');
@@ -42,7 +42,7 @@ public function testAutoLoginThrowsExceptionOnInvalidCookie()
     public function testAutoLoginThrowsExceptionOnNonExistentUser()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
         $request->cookies->set('foo', $this->getCookie('fooclass', 'foouser', time() + 3600, 'foopass'));
 
@@ -59,7 +59,7 @@ public function testAutoLoginThrowsExceptionOnNonExistentUser()
     public function testAutoLoginDoesNotAcceptCookieWithInvalidHash()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
         $request->cookies->set('foo', base64_encode('class:'.base64_encode('foouser').':123456789:fooHash'));
 
@@ -84,7 +84,7 @@ public function testAutoLoginDoesNotAcceptCookieWithInvalidHash()
     public function testAutoLoginDoesNotAcceptAnExpiredCookie()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
         $request->cookies->set('foo', $this->getCookie('fooclass', 'foouser', time() - 1, 'foopass'));
 
@@ -117,7 +117,7 @@ public function testAutoLogin($username)
         $user
             ->expects($this->once())
             ->method('getRoles')
-            ->will($this->returnValue(array('ROLE_FOO')))
+            ->will($this->returnValue(['ROLE_FOO']))
         ;
         $user
             ->expects($this->once())
@@ -133,7 +133,7 @@ public function testAutoLogin($username)
             ->will($this->returnValue($user))
         ;
 
-        $service = $this->getService($userProvider, array('name' => 'foo', 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
         $request->cookies->set('foo', $this->getCookie('fooclass', $username, time() + 3600, 'foopass'));
 
@@ -146,15 +146,15 @@ public function testAutoLogin($username)
 
     public function provideUsernamesForAutoLogin()
     {
-        return array(
-            array('foouser', 'Simple username'),
-            array('foo'.TokenBasedRememberMeServices::COOKIE_DELIMITER.'user', 'Username might contain the delimiter'),
-        );
+        return [
+            ['foouser', 'Simple username'],
+            ['foo'.TokenBasedRememberMeServices::COOKIE_DELIMITER.'user', 'Username might contain the delimiter'],
+        ];
     }
 
     public function testLogout()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'secure' => true, 'httponly' => false));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'secure' => true, 'httponly' => false]);
         $request = new Request();
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -171,7 +171,7 @@ public function testLogout()
 
     public function testLoginFail()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => '/foo', 'domain' => 'foodomain.foo'));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => '/foo', 'domain' => 'foodomain.foo']);
         $request = new Request();
 
         $service->loginFail($request);
@@ -184,7 +184,7 @@ public function testLoginFail()
 
     public function testLoginSuccessIgnoresTokensWhichDoNotContainAnUserInterfaceImplementation()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null]);
         $request = new Request();
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -205,7 +205,7 @@ public function testLoginSuccessIgnoresTokensWhichDoNotContainAnUserInterfaceImp
 
     public function testLoginSuccess()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'domain' => 'myfoodomain.foo', 'path' => '/foo/path', 'secure' => true, 'httponly' => true, 'lifetime' => 3600, 'always_remember_me' => true));
+        $service = $this->getService(null, ['name' => 'foo', 'domain' => 'myfoodomain.foo', 'path' => '/foo/path', 'secure' => true, 'httponly' => true, 'lifetime' => 3600, 'always_remember_me' => true]);
         $request = new Request();
         $response = new Response();
 
@@ -260,13 +260,13 @@ protected function encodeCookie(array $parts)
         return $r->invoke($service, $parts);
     }
 
-    protected function getService($userProvider = null, $options = array(), $logger = null)
+    protected function getService($userProvider = null, $options = [], $logger = null)
     {
         if (null === $userProvider) {
             $userProvider = $this->getProvider();
         }
 
-        $service = new TokenBasedRememberMeServices(array($userProvider), 'foosecret', 'fookey', $options, $logger);
+        $service = new TokenBasedRememberMeServices([$userProvider], 'foosecret', 'fookey', $options, $logger);
 
         return $service;
     }
diff --git a/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php b/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
index 71af8eadc42e..24daf7c5c4f9 100644
--- a/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
@@ -24,10 +24,10 @@
  */
 class ChainDecoder implements DecoderInterface /*, ContextAwareDecoderInterface*/
 {
-    protected $decoders = array();
-    protected $decoderByFormat = array();
+    protected $decoders = [];
+    protected $decoderByFormat = [];
 
-    public function __construct(array $decoders = array())
+    public function __construct(array $decoders = [])
     {
         $this->decoders = $decoders;
     }
@@ -35,7 +35,7 @@ public function __construct(array $decoders = array())
     /**
      * {@inheritdoc}
      */
-    final public function decode($data, $format, array $context = array())
+    final public function decode($data, $format, array $context = [])
     {
         return $this->getDecoder($format, $context)->decode($data, $format, $context);
     }
@@ -45,7 +45,7 @@ final public function decode($data, $format, array $context = array())
      */
     public function supportsDecoding($format/*, array $context = array()*/)
     {
-        $context = \func_num_args() > 1 ? func_get_arg(1) : array();
+        $context = \func_num_args() > 1 ? func_get_arg(1) : [];
 
         try {
             $this->getDecoder($format, $context);
diff --git a/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php b/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
index 6e2b85bf27ee..f1e749139414 100644
--- a/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
@@ -24,10 +24,10 @@
  */
 class ChainEncoder implements EncoderInterface /*, ContextAwareEncoderInterface*/
 {
-    protected $encoders = array();
-    protected $encoderByFormat = array();
+    protected $encoders = [];
+    protected $encoderByFormat = [];
 
-    public function __construct(array $encoders = array())
+    public function __construct(array $encoders = [])
     {
         $this->encoders = $encoders;
     }
@@ -35,7 +35,7 @@ public function __construct(array $encoders = array())
     /**
      * {@inheritdoc}
      */
-    final public function encode($data, $format, array $context = array())
+    final public function encode($data, $format, array $context = [])
     {
         return $this->getEncoder($format, $context)->encode($data, $format, $context);
     }
@@ -45,7 +45,7 @@ final public function encode($data, $format, array $context = array())
      */
     public function supportsEncoding($format/*, array $context = array()*/)
     {
-        $context = \func_num_args() > 1 ? func_get_arg(1) : array();
+        $context = \func_num_args() > 1 ? func_get_arg(1) : [];
 
         try {
             $this->getEncoder($format, $context);
@@ -66,7 +66,7 @@ public function supportsEncoding($format/*, array $context = array()*/)
      */
     public function needsNormalization($format/*, array $context = array()*/)
     {
-        $context = \func_num_args() > 1 ? func_get_arg(1) : array();
+        $context = \func_num_args() > 1 ? func_get_arg(1) : [];
         $encoder = $this->getEncoder($format, $context);
 
         if (!$encoder instanceof NormalizationAwareInterface) {
diff --git a/src/Symfony/Component/Serializer/Encoder/ContextAwareDecoderInterface.php b/src/Symfony/Component/Serializer/Encoder/ContextAwareDecoderInterface.php
index eefea0ecae12..5ef89d5596ca 100644
--- a/src/Symfony/Component/Serializer/Encoder/ContextAwareDecoderInterface.php
+++ b/src/Symfony/Component/Serializer/Encoder/ContextAwareDecoderInterface.php
@@ -23,5 +23,5 @@ interface ContextAwareDecoderInterface extends DecoderInterface
      *
      * @param array $context options that decoders have access to
      */
-    public function supportsDecoding($format, array $context = array());
+    public function supportsDecoding($format, array $context = []);
 }
diff --git a/src/Symfony/Component/Serializer/Encoder/ContextAwareEncoderInterface.php b/src/Symfony/Component/Serializer/Encoder/ContextAwareEncoderInterface.php
index 0268df3d8d1c..a8893a80f91b 100644
--- a/src/Symfony/Component/Serializer/Encoder/ContextAwareEncoderInterface.php
+++ b/src/Symfony/Component/Serializer/Encoder/ContextAwareEncoderInterface.php
@@ -23,5 +23,5 @@ interface ContextAwareEncoderInterface extends EncoderInterface
      *
      * @param array $context options that encoders have access to
      */
-    public function supportsEncoding($format, array $context = array());
+    public function supportsEncoding($format, array $context = []);
 }
diff --git a/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php b/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
index c2a70eed8d23..1e47d35f17c7 100644
--- a/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
@@ -50,20 +50,20 @@ public function __construct($delimiter = ',', $enclosure = '"', $escapeChar = '\
     /**
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         $handle = fopen('php://temp,', 'w+');
 
         if (!\is_array($data)) {
-            $data = array(array($data));
+            $data = [[$data]];
         } elseif (empty($data)) {
-            $data = array(array());
+            $data = [[]];
         } else {
             // Sequential arrays of arrays are considered as collections
             $i = 0;
             foreach ($data as $key => $value) {
                 if ($i !== $key || !\is_array($value)) {
-                    $data = array($data);
+                    $data = [$data];
                     break;
                 }
 
@@ -74,7 +74,7 @@ public function encode($data, $format, array $context = array())
         list($delimiter, $enclosure, $escapeChar, $keySeparator, $headers) = $this->getCsvOptions($context);
 
         foreach ($data as &$value) {
-            $flattened = array();
+            $flattened = [];
             $this->flatten($value, $flattened, $keySeparator);
             $value = $flattened;
         }
@@ -107,7 +107,7 @@ public function supportsEncoding($format)
     /**
      * {@inheritdoc}
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         $handle = fopen('php://temp', 'r+');
         fwrite($handle, $data);
@@ -115,8 +115,8 @@ public function decode($data, $format, array $context = array())
 
         $headers = null;
         $nbHeaders = 0;
-        $headerCount = array();
-        $result = array();
+        $headerCount = [];
+        $result = [];
 
         list($delimiter, $enclosure, $escapeChar, $keySeparator) = $this->getCsvOptions($context);
 
@@ -135,7 +135,7 @@ public function decode($data, $format, array $context = array())
                 continue;
             }
 
-            $item = array();
+            $item = [];
             for ($i = 0; ($i < $nbCols) && ($i < $nbHeaders); ++$i) {
                 $depth = $headerCount[$i];
                 $arr = &$item;
@@ -148,7 +148,7 @@ public function decode($data, $format, array $context = array())
                     }
 
                     if (!isset($arr[$headers[$i][$j]])) {
-                        $arr[$headers[$i][$j]] = array();
+                        $arr[$headers[$i][$j]] = [];
                     }
 
                     $arr = &$arr[$headers[$i][$j]];
@@ -200,13 +200,13 @@ private function getCsvOptions(array $context)
         $enclosure = isset($context[self::ENCLOSURE_KEY]) ? $context[self::ENCLOSURE_KEY] : $this->enclosure;
         $escapeChar = isset($context[self::ESCAPE_CHAR_KEY]) ? $context[self::ESCAPE_CHAR_KEY] : $this->escapeChar;
         $keySeparator = isset($context[self::KEY_SEPARATOR_KEY]) ? $context[self::KEY_SEPARATOR_KEY] : $this->keySeparator;
-        $headers = isset($context[self::HEADERS_KEY]) ? $context[self::HEADERS_KEY] : array();
+        $headers = isset($context[self::HEADERS_KEY]) ? $context[self::HEADERS_KEY] : [];
 
         if (!\is_array($headers)) {
             throw new InvalidArgumentException(sprintf('The "%s" context variable must be an array or null, given "%s".', self::HEADERS_KEY, \gettype($headers)));
         }
 
-        return array($delimiter, $enclosure, $escapeChar, $keySeparator, $headers);
+        return [$delimiter, $enclosure, $escapeChar, $keySeparator, $headers];
     }
 
     /**
@@ -214,8 +214,8 @@ private function getCsvOptions(array $context)
      */
     private function extractHeaders(array $data)
     {
-        $headers = array();
-        $flippedHeaders = array();
+        $headers = [];
+        $flippedHeaders = [];
 
         foreach ($data as $row) {
             $previousHeader = null;
diff --git a/src/Symfony/Component/Serializer/Encoder/DecoderInterface.php b/src/Symfony/Component/Serializer/Encoder/DecoderInterface.php
index 0fa578099f13..cfc591e7adf8 100644
--- a/src/Symfony/Component/Serializer/Encoder/DecoderInterface.php
+++ b/src/Symfony/Component/Serializer/Encoder/DecoderInterface.php
@@ -36,7 +36,7 @@ interface DecoderInterface
      *
      * @throws UnexpectedValueException
      */
-    public function decode($data, $format, array $context = array());
+    public function decode($data, $format, array $context = []);
 
     /**
      * Checks whether the deserializer can decode from given format.
diff --git a/src/Symfony/Component/Serializer/Encoder/EncoderInterface.php b/src/Symfony/Component/Serializer/Encoder/EncoderInterface.php
index 077e4422e484..9b9862e2acb2 100644
--- a/src/Symfony/Component/Serializer/Encoder/EncoderInterface.php
+++ b/src/Symfony/Component/Serializer/Encoder/EncoderInterface.php
@@ -31,7 +31,7 @@ interface EncoderInterface
      *
      * @throws UnexpectedValueException
      */
-    public function encode($data, $format, array $context = array());
+    public function encode($data, $format, array $context = []);
 
     /**
      * Checks whether the serializer can encode to given format.
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonDecode.php b/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
index bee1f7d4449f..1d0b86afc5d0 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
@@ -64,7 +64,7 @@ public function __construct($associative = false, $depth = 512)
      *
      * @see http://php.net/json_decode json_decode
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         $context = $this->resolveContext($context);
 
@@ -96,11 +96,11 @@ public function supportsDecoding($format)
      */
     private function resolveContext(array $context)
     {
-        $defaultOptions = array(
+        $defaultOptions = [
             'json_decode_associative' => $this->associative,
             'json_decode_recursion_depth' => $this->recursionDepth,
             'json_decode_options' => 0,
-        );
+        ];
 
         return array_merge($defaultOptions, $context);
     }
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonEncode.php b/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
index ef084eeab2b9..9b07d709b8cf 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
@@ -32,7 +32,7 @@ public function __construct($bitmask = 0)
      *
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         $context = $this->resolveContext($context);
 
@@ -58,8 +58,8 @@ public function supportsEncoding($format)
      *
      * @return array
      */
-    private function resolveContext(array $context = array())
+    private function resolveContext(array $context = [])
     {
-        return array_merge(array('json_encode_options' => $this->options), $context);
+        return array_merge(['json_encode_options' => $this->options], $context);
     }
 }
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php b/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
index f4950cb3b3f4..87f6be0b177c 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
@@ -32,7 +32,7 @@ public function __construct(JsonEncode $encodingImpl = null, JsonDecode $decodin
     /**
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         return $this->encodingImpl->encode($data, self::FORMAT, $context);
     }
@@ -40,7 +40,7 @@ public function encode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         return $this->decodingImpl->decode($data, self::FORMAT, $context);
     }
diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index 96578c6bc75e..522637a00789 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -49,7 +49,7 @@ public function __construct($rootNodeName = 'response', $loadOptions = null)
     /**
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         if ($data instanceof \DOMDocument) {
             return $data->saveXML();
@@ -75,7 +75,7 @@ public function encode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         if ('' === trim($data)) {
             throw new NotEncodableValueException('Invalid XML data, it can not be empty.');
@@ -111,7 +111,7 @@ public function decode($data, $format, array $context = array())
 
         if ($rootNode->hasChildNodes()) {
             $xpath = new \DOMXPath($dom);
-            $data = array();
+            $data = [];
             foreach ($xpath->query('namespace::*', $dom->documentElement) as $nsNode) {
                 $data['@'.$nsNode->nodeName] = $nsNode->nodeValue;
             }
@@ -129,7 +129,7 @@ public function decode($data, $format, array $context = array())
             return $rootNode->nodeValue;
         }
 
-        $data = array();
+        $data = [];
 
         foreach ($rootNode->attributes as $attrKey => $attr) {
             $data['@'.$attrKey] = $attr->nodeValue;
@@ -259,7 +259,7 @@ final protected function isElementNameValid($name)
      *
      * @return array|string
      */
-    private function parseXml(\DOMNode $node, array $context = array())
+    private function parseXml(\DOMNode $node, array $context = [])
     {
         $data = $this->parseXmlAttributes($node, $context);
 
@@ -293,13 +293,13 @@ private function parseXml(\DOMNode $node, array $context = array())
      *
      * @return array
      */
-    private function parseXmlAttributes(\DOMNode $node, array $context = array())
+    private function parseXmlAttributes(\DOMNode $node, array $context = [])
     {
         if (!$node->hasAttributes()) {
-            return array();
+            return [];
         }
 
-        $data = array();
+        $data = [];
         $typeCastAttributes = $this->resolveXmlTypeCastAttributes($context);
 
         foreach ($node->attributes as $attr) {
@@ -326,17 +326,17 @@ private function parseXmlAttributes(\DOMNode $node, array $context = array())
      *
      * @return array|string
      */
-    private function parseXmlValue(\DOMNode $node, array $context = array())
+    private function parseXmlValue(\DOMNode $node, array $context = [])
     {
         if (!$node->hasChildNodes()) {
             return $node->nodeValue;
         }
 
-        if (1 === $node->childNodes->length && \in_array($node->firstChild->nodeType, array(XML_TEXT_NODE, XML_CDATA_SECTION_NODE))) {
+        if (1 === $node->childNodes->length && \in_array($node->firstChild->nodeType, [XML_TEXT_NODE, XML_CDATA_SECTION_NODE])) {
             return $node->firstChild->nodeValue;
         }
 
-        $value = array();
+        $value = [];
 
         foreach ($node->childNodes as $subnode) {
             if (XML_PI_NODE === $subnode->nodeType) {
@@ -513,7 +513,7 @@ private function selectNodeType(\DOMNode $node, $val)
      *
      * @return string
      */
-    private function resolveXmlRootName(array $context = array())
+    private function resolveXmlRootName(array $context = [])
     {
         return isset($context['xml_root_node_name'])
             ? $context['xml_root_node_name']
@@ -527,7 +527,7 @@ private function resolveXmlRootName(array $context = array())
      *
      * @return bool
      */
-    private function resolveXmlTypeCastAttributes(array $context = array())
+    private function resolveXmlTypeCastAttributes(array $context = [])
     {
         return isset($context['xml_type_cast_attributes'])
             ? (bool) $context['xml_type_cast_attributes']
@@ -546,7 +546,7 @@ private function createDomDocument(array $context)
         $document = new \DOMDocument();
 
         // Set an attribute on the DOM document specifying, as part of the XML declaration,
-        $xmlOptions = array(
+        $xmlOptions = [
             // nicely formats output with indentation and extra space
             'xml_format_output' => 'formatOutput',
             // the version number of the document
@@ -555,7 +555,7 @@ private function createDomDocument(array $context)
             'xml_encoding' => 'encoding',
             // whether the document is standalone
             'xml_standalone' => 'xmlStandalone',
-        );
+        ];
         foreach ($xmlOptions as $xmlOption => $documentProperty) {
             if (isset($context[$xmlOption])) {
                 $document->$documentProperty = $context[$xmlOption];
diff --git a/src/Symfony/Component/Serializer/Encoder/YamlEncoder.php b/src/Symfony/Component/Serializer/Encoder/YamlEncoder.php
index 3ac1af679a4a..62e5212077dc 100644
--- a/src/Symfony/Component/Serializer/Encoder/YamlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/YamlEncoder.php
@@ -26,9 +26,9 @@ class YamlEncoder implements EncoderInterface, DecoderInterface
 
     private $dumper;
     private $parser;
-    private $defaultContext = array('yaml_inline' => 0, 'yaml_indent' => 0, 'yaml_flags' => 0);
+    private $defaultContext = ['yaml_inline' => 0, 'yaml_indent' => 0, 'yaml_flags' => 0];
 
-    public function __construct(Dumper $dumper = null, Parser $parser = null, array $defaultContext = array())
+    public function __construct(Dumper $dumper = null, Parser $parser = null, array $defaultContext = [])
     {
         if (!class_exists(Dumper::class)) {
             throw new RuntimeException('The YamlEncoder class requires the "Yaml" component. Install "symfony/yaml" to use it.');
@@ -42,7 +42,7 @@ public function __construct(Dumper $dumper = null, Parser $parser = null, array
     /**
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         $context = array_merge($this->defaultContext, $context);
 
@@ -60,7 +60,7 @@ public function supportsEncoding($format)
     /**
      * {@inheritdoc}
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         $context = array_merge($this->defaultContext, $context);
 
diff --git a/src/Symfony/Component/Serializer/Mapping/AttributeMetadata.php b/src/Symfony/Component/Serializer/Mapping/AttributeMetadata.php
index 9ad6e30810d8..d82369f04250 100644
--- a/src/Symfony/Component/Serializer/Mapping/AttributeMetadata.php
+++ b/src/Symfony/Component/Serializer/Mapping/AttributeMetadata.php
@@ -30,7 +30,7 @@ class AttributeMetadata implements AttributeMetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getGroups()} instead.
      */
-    public $groups = array();
+    public $groups = [];
 
     /**
      * @var int|null
@@ -115,6 +115,6 @@ public function merge(AttributeMetadataInterface $attributeMetadata)
      */
     public function __sleep()
     {
-        return array('name', 'groups', 'maxDepth');
+        return ['name', 'groups', 'maxDepth'];
     }
 }
diff --git a/src/Symfony/Component/Serializer/Mapping/AttributeMetadataInterface.php b/src/Symfony/Component/Serializer/Mapping/AttributeMetadataInterface.php
index 944a7b3133f3..d9a15d5ac0de 100644
--- a/src/Symfony/Component/Serializer/Mapping/AttributeMetadataInterface.php
+++ b/src/Symfony/Component/Serializer/Mapping/AttributeMetadataInterface.php
@@ -60,5 +60,5 @@ public function getMaxDepth();
     /**
      * Merges an {@see AttributeMetadataInterface} with in the current one.
      */
-    public function merge(AttributeMetadataInterface $attributeMetadata);
+    public function merge(self $attributeMetadata);
 }
diff --git a/src/Symfony/Component/Serializer/Mapping/ClassMetadata.php b/src/Symfony/Component/Serializer/Mapping/ClassMetadata.php
index 7858f74dbbe2..206077626050 100644
--- a/src/Symfony/Component/Serializer/Mapping/ClassMetadata.php
+++ b/src/Symfony/Component/Serializer/Mapping/ClassMetadata.php
@@ -32,7 +32,7 @@ class ClassMetadata implements ClassMetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getAttributesMetadata()} instead.
      */
-    public $attributesMetadata = array();
+    public $attributesMetadata = [];
 
     /**
      * @var \ReflectionClass
@@ -106,9 +106,9 @@ public function getReflectionClass()
      */
     public function __sleep()
     {
-        return array(
+        return [
             'name',
             'attributesMetadata',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php b/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
index 76d064326f16..2013e5897b49 100644
--- a/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
@@ -110,7 +110,7 @@ private function parseFile($file)
     private function getClassesFromXml()
     {
         $xml = $this->parseFile($this->file);
-        $classes = array();
+        $classes = [];
 
         foreach ($xml->class as $class) {
             $classes[(string) $class['name']] = $class;
diff --git a/src/Symfony/Component/Serializer/Mapping/Loader/YamlFileLoader.php b/src/Symfony/Component/Serializer/Mapping/Loader/YamlFileLoader.php
index 886da0d1b509..910919106d14 100644
--- a/src/Symfony/Component/Serializer/Mapping/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/Serializer/Mapping/Loader/YamlFileLoader.php
@@ -116,7 +116,7 @@ private function getClassesFromYaml()
         $classes = $this->yamlParser->parseFile($this->file);
 
         if (empty($classes)) {
-            return array();
+            return [];
         }
 
         if (!\is_array($classes)) {
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
index 28ebdb656ac3..dd43846820cb 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -58,17 +58,17 @@ abstract class AbstractNormalizer extends SerializerAwareNormalizer implements N
     /**
      * @var array
      */
-    protected $callbacks = array();
+    protected $callbacks = [];
 
     /**
      * @var array
      */
-    protected $ignoredAttributes = array();
+    protected $ignoredAttributes = [];
 
     /**
      * @var array
      */
-    protected $camelizedAttributes = array();
+    protected $camelizedAttributes = [];
 
     /**
      * Sets the {@link ClassMetadataFactoryInterface} to use.
@@ -218,7 +218,7 @@ protected function getAllowedAttributes($classOrObject, array $context, $attribu
             return false;
         }
 
-        $allowedAttributes = array();
+        $allowedAttributes = [];
         foreach ($this->classMetadataFactory->getMetadataFor($classOrObject)->getAttributesMetadata() as $attributeMetadata) {
             $name = $attributeMetadata->getName();
 
@@ -243,7 +243,7 @@ protected function getAllowedAttributes($classOrObject, array $context, $attribu
      *
      * @return bool
      */
-    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = array())
+    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = [])
     {
         if (\in_array($attribute, $this->ignoredAttributes)) {
             return false;
@@ -335,7 +335,7 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
         if ($constructor) {
             $constructorParameters = $constructor->getParameters();
 
-            $params = array();
+            $params = [];
             foreach ($constructorParameters as $constructorParameter) {
                 $paramName = $constructorParameter->name;
                 $key = $this->nameConverter ? $this->nameConverter->normalize($paramName) : $paramName;
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index 1c3f54b60dbc..17c31b132b29 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -34,8 +34,8 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
     const DISABLE_TYPE_ENFORCEMENT = 'disable_type_enforcement';
 
     private $propertyTypeExtractor;
-    private $attributesCache = array();
-    private $cache = array();
+    private $attributesCache = [];
+    private $cache = [];
 
     public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null)
     {
@@ -55,7 +55,7 @@ public function supportsNormalization($data, $format = null)
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
@@ -65,8 +65,8 @@ public function normalize($object, $format = null, array $context = array())
             return $this->handleCircularReference($object);
         }
 
-        $data = array();
-        $stack = array();
+        $data = [];
+        $stack = [];
         $attributes = $this->getAttributes($object, $format, $context);
         $class = \get_class($object);
         $attributesMetadata = $this->classMetadataFactory ? $this->classMetadataFactory->getMetadataFor($class)->getAttributesMetadata() : null;
@@ -148,7 +148,7 @@ protected function getAttributes($object, $format = null, array $context)
      *
      * @return string[]
      */
-    abstract protected function extractAttributes($object, $format = null, array $context = array());
+    abstract protected function extractAttributes($object, $format = null, array $context = []);
 
     /**
      * Gets the attribute value.
@@ -160,7 +160,7 @@ abstract protected function extractAttributes($object, $format = null, array $co
      *
      * @return mixed
      */
-    abstract protected function getAttributeValue($object, $attribute, $format = null, array $context = array());
+    abstract protected function getAttributeValue($object, $attribute, $format = null, array $context = []);
 
     /**
      * {@inheritdoc}
@@ -173,7 +173,7 @@ public function supportsDenormalization($data, $type, $format = null)
     /**
      * {@inheritdoc}
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
@@ -181,7 +181,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
 
         $allowedAttributes = $this->getAllowedAttributes($class, $context, true);
         $normalizedData = $this->prepareForDenormalization($data);
-        $extraAttributes = array();
+        $extraAttributes = [];
 
         $reflectionClass = new \ReflectionClass($class);
         $object = $this->instantiateObject($normalizedData, $class, $context, $reflectionClass, $allowedAttributes, $format);
@@ -223,7 +223,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
      * @param string|null $format
      * @param array       $context
      */
-    abstract protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array());
+    abstract protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = []);
 
     /**
      * Validates the submitted data and denormalizes it.
@@ -245,7 +245,7 @@ private function validateAndDenormalize($currentClass, $attribute, $data, $forma
             return $data;
         }
 
-        $expectedTypes = array();
+        $expectedTypes = [];
         foreach ($types as $type) {
             if (null === $data && $type->isNullable()) {
                 return;
@@ -258,7 +258,7 @@ private function validateAndDenormalize($currentClass, $attribute, $data, $forma
                 // Fix a collection that contains the only one element
                 // This is special to xml format only
                 if ('xml' === $format && !\is_int(key($data))) {
-                    $data = array($data);
+                    $data = [$data];
                 }
 
                 if (null !== $collectionKeyType = $type->getCollectionKeyType()) {
diff --git a/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
index 23b3a0e95b02..cf65094c661e 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
@@ -36,7 +36,7 @@ class ArrayDenormalizer implements DenormalizerInterface, SerializerAwareInterfa
      *
      * @throws NotNormalizableValueException
      */
-    public function denormalize($data, $class, $for
10000
mat = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         if (null === $this->serializer) {
             throw new BadMethodCallException('Please set a serializer before calling denormalize()!');
@@ -68,7 +68,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
      */
     public function supportsDenormalization($data, $type, $format = null/*, array $context = array()*/)
     {
-        $context = \func_num_args() > 3 ? func_get_arg(3) : array();
+        $context = \func_num_args() > 3 ? func_get_arg(3) : [];
 
         return '[]' === substr($type, -2)
             && $this->serializer->supportsDenormalization($data, substr($type, 0, -2), $format, $context);
diff --git a/src/Symfony/Component/Serializer/Normalizer/ContextAwareDenormalizerInterface.php b/src/Symfony/Component/Serializer/Normalizer/ContextAwareDenormalizerInterface.php
index f0bb48c5c649..4e68dae1ee3d 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ContextAwareDenormalizerInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ContextAwareDenormalizerInterface.php
@@ -23,5 +23,5 @@ interface ContextAwareDenormalizerInterface extends DenormalizerInterface
      *
      * @param array $context options that denormalizers have access to
      */
-    public function supportsDenormalization($data, $type, $format = null, array $context = array());
+    public function supportsDenormalization($data, $type, $format = null, array $context = []);
 }
diff --git a/src/Symfony/Component/Serializer/Normalizer/ContextAwareNormalizerInterface.php b/src/Symfony/Component/Serializer/Normalizer/ContextAwareNormalizerInterface.php
index b6ab05b713af..c278b7ded9f2 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ContextAwareNormalizerInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ContextAwareNormalizerInterface.php
@@ -23,5 +23,5 @@ interface ContextAwareNormalizerInterface extends NormalizerInterface
      *
      * @param array $context options that normalizers have access to
      */
-    public function supportsNormalization($data, $format = null, array $context = array());
+    public function supportsNormalization($data, $format = null, array $context = []);
 }
diff --git a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
index 6a15d8da9027..969dcf5fc923 100644
--- a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
@@ -22,12 +22,12 @@ class CustomNormalizer implements NormalizerInterface, DenormalizerInterface, Se
     use ObjectToPopulateTrait;
     use SerializerAwareTrait;
 
-    private $cache = array();
+    private $cache = [];
 
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         return $object->normalize($this->serializer, $format, $context);
     }
@@ -35,7 +35,7 @@ public function normalize($object, $format = null, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         $object = $this->extractObjectToPopulate($class, $context) ?: new $class();
         $object->denormalize($this->serializer, $data, $format, $context);
diff --git a/src/Symfony/Component/Serializer/Normalizer/DataUriNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DataUriNormalizer.php
index 995bdf144177..0284ca6ebcc4 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DataUriNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DataUriNormalizer.php
@@ -25,11 +25,11 @@
  */
 class DataUriNormalizer implements NormalizerInterface, DenormalizerInterface
 {
-    private static $supportedTypes = array(
+    private static $supportedTypes = [
         \SplFileInfo::class => true,
         \SplFileObject::class => true,
         File::class => true,
-    );
+    ];
 
     /**
      * @var MimeTypeGuesserInterface
@@ -48,7 +48,7 @@ public function __construct(MimeTypeGuesserInterface $mimeTypeGuesser = null)
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         if (!$object instanceof \SplFileInfo) {
             throw new InvalidArgumentException('The object must be an instance of "\SplFileInfo".');
@@ -89,7 +89,7 @@ public function supportsNormalization($data, $format = null)
      * @throws InvalidArgumentException
      * @throws NotNormalizableValueException
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         if (!preg_match('/^data:([a-z0-9][a-z0-9\!\#\$\&\-\^\_\+\.]{0,126}\/[a-z0-9][a-z0-9\!\#\$\&\-\^\_\+\.]{0,126}(;[a-z0-9\-]+\=[a-z0-9\-]+)?)?(;base64)?,[a-z0-9\!\$\&\\\'\,\(\)\*\+\,\;\=\-\.\_\~\:\@\/\?\%\s]*\s*$/i', $data)) {
             throw new NotNormalizableValueException('The provided "data:" URI is not valid.');
diff --git a/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
index 7f23aec354d1..56527a8eb4ec 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
@@ -39,7 +39,7 @@ public function __construct($format = 'P%yY%mM%dDT%hH%iM%sS')
      *
      * @throws InvalidArgumentException
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         if (!$object instanceof \DateInterval) {
             throw new InvalidArgumentException('The object must be an instance of "\DateInterval".');
@@ -64,7 +64,7 @@ public function supportsNormalization($data, $format = null)
      * @throws InvalidArgumentException
      * @throws UnexpectedValueException
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         if (!\is_string($data)) {
             throw new InvalidArgumentException(sprintf('Data expected to be a string, %s given.', \gettype($data)));
diff --git a/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
index aaa4e8b940a9..a4b628ef906c 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
@@ -28,11 +28,11 @@ class DateTimeNormalizer implements NormalizerInterface, DenormalizerInterface
     private $format;
     private $timezone;
 
-    private static $supportedTypes = array(
+    private static $supportedTypes = [
         \DateTimeInterface::class => true,
         \DateTimeImmutable::class => true,
         \DateTime::class => true,
-    );
+    ];
 
     /**
      * @param string             $format
@@ -49,7 +49,7 @@ public function __construct($format = \DateTime::RFC3339, \DateTimeZone $timezon
      *
      * @throws InvalidArgumentException
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         if (!$object instanceof \DateTimeInterface) {
             throw new InvalidArgumentException('The object must implement the "\DateTimeInterface".');
@@ -79,7 +79,7 @@ public function supportsNormalization($data, $format = null)
      *
      * @throws NotNormalizableValueException
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         $dateTimeFormat = isset($context[self::FORMAT_KEY]) ? $context[self::FORMAT_KEY] : null;
         $timezone = $this->getTimezone($context);
@@ -133,7 +133,7 @@ public function supportsDenormalization($data, $type, $format = null)
      */
     private function formatDateTimeErrors(array $errors)
     {
-        $formattedErrors = array();
+        $formattedErrors = [];
 
         foreach ($errors as $pos => $message) {
             $formattedErrors[] = sprintf('at position %d: %s', $pos, $message);
diff --git a/src/Symfony/Component/Serializer/Normalizer/DenormalizableInterface.php b/src/Symfony/Component/Serializer/Normalizer/DenormalizableInterface.php
index 5db15418b5c0..31e27a85cb02 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DenormalizableInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DenormalizableInterface.php
@@ -36,5 +36,5 @@ interface DenormalizableInterface
      *
      * @return object
      */
-    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = array());
+    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = []);
 }
diff --git a/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php b/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
index c3a2bb535632..54e41431e0ce 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
@@ -42,7 +42,7 @@ interface DenormalizerInterface
      * @throws LogicException           Occurs when the normalizer is not supposed to denormalize
      * @throws RuntimeException         Occurs if the class cannot be instantiated
      */
-    public function denormalize($data, $class, $format = null, array $context = array());
+    public function denormalize($data, $class, $format = null, array $context = []);
 
     /**
      * Checks whether the given class is supported for denormalization by this normalizer.
diff --git a/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
index 6eec9dd4d9bd..d4be31d3d1c9 100644
--- a/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
@@ -34,8 +34,8 @@
  */
 class GetSetMethodNormalizer extends AbstractObjectNormalizer
 {
-    private static $setterAccessibleCache = array();
-    private $cache = array();
+    private static $setterAccessibleCache = [];
+    private $cache = [];
 
     /**
      * {@inheritdoc}
@@ -96,12 +96,12 @@ private function isGetMethod(\ReflectionMethod $method)
     /**
      * {@inheritdoc}
      */
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
         $reflectionObject = new \ReflectionObject($object);
         $reflectionMethods = $reflectionObject->getMethods(\ReflectionMethod::IS_PUBLIC);
 
-        $attributes = array();
+        $attributes = [];
         foreach ($reflectionMethods as $method) {
             if (!$this->isGetMethod($method)) {
                 continue;
@@ -120,22 +120,22 @@ protected function extractAttributes($object, $format = null, array $context = a
     /**
      * {@inheritdoc}
      */
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
         $ucfirsted = ucfirst($attribute);
 
         $getter = 'get'.$ucfirsted;
-        if (\is_callable(array($object, $getter))) {
+        if (\is_callable([$object, $getter])) {
             return $object->$getter();
         }
 
         $isser = 'is'.$ucfirsted;
-        if (\is_callable(array($object, $isser))) {
+        if (\is_callable([$object, $isser])) {
             return $object->$isser();
         }
 
         $haser = 'has'.$ucfirsted;
-        if (\is_callable(array($object, $haser))) {
+        if (\is_callable([$object, $haser])) {
             return $object->$haser();
         }
     }
@@ -143,13 +143,13 @@ protected function getAttributeValue($object, $attribute, $format = null, array
     /**
      * {@inheritdoc}
      */
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         $setter = 'set'.ucfirst($attribute);
         $key = \get_class($object).':'.$setter;
 
         if (!isset(self::$setterAccessibleCache[$key])) {
-            self::$setterAccessibleCache[$key] = \is_callable(array($object, $setter)) && !(new \ReflectionMethod($object, $setter))->isStatic();
+            self::$setterAccessibleCache[$key] = \is_callable([$object, $setter]) && !(new \ReflectionMethod($object, $setter))->isStatic();
         }
 
         if (self::$setterAccessibleCache[$key]) {
diff --git a/src/Symfony/Component/Serializer/Normalizer/JsonSerializableNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/JsonSerializableNormalizer.php
index 27ccf8023cba..b4e53e51358a 100644
--- a/src/Symfony/Component/Serializer/Normalizer/JsonSerializableNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/JsonSerializableNormalizer.php
@@ -24,7 +24,7 @@ class JsonSerializableNormalizer extends AbstractNormalizer
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         if ($this->isCircularReference($object, $context)) {
             return $this->handleCircularReference($object);
@@ -60,7 +60,7 @@ public function supportsDenormalization($data, $type, $format = null)
     /**
      * {@inheritdoc}
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         throw new LogicException(sprintf('Cannot denormalize with "%s".', \JsonSerializable::class));
     }
diff --git a/src/Symfony/Component/Serializer/Normalizer/NormalizableInterface.php b/src/Symfony/Component/Serializer/Normalizer/NormalizableInterface.php
index 8542e4f80e1c..f7a556014363 100644
--- a/src/Symfony/Component/Serializer/Normalizer/NormalizableInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/NormalizableInterface.php
@@ -35,5 +35,5 @@ interface NormalizableInterface
      *
      * @return array|string|int|float|bool
      */
-    public function normalize(NormalizerInterface $normalizer, $format = null, array $context = array());
+    public function normalize(NormalizerInterface $normalizer, $format = null, array $context = []);
 }
diff --git a/src/Symfony/Component/Serializer/Normalizer/NormalizerInterface.php b/src/Symfony/Component/Serializer/Normalizer/NormalizerInterface.php
index 5cccdb336009..09aca60ff23e 100644
--- a/src/Symfony/Component/Serializer/Normalizer/NormalizerInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/NormalizerInterface.php
@@ -36,7 +36,7 @@ interface NormalizerInterface
      *                                    reference handler can fix it
      * @throws LogicException             Occurs when the normalizer is not called in an expected context
      */
-    public function normalize($object, $format = null, array $context = array());
+    public function normalize($object, $format = null, array $context = []);
 
     /**
      * Checks whether the given class is supported for normalization by this normalizer.
diff --git a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
index 614d6cd4a93a..854962da6c94 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
@@ -42,10 +42,10 @@ public function __construct(ClassMetadataFactoryInterface $classMetadataFactory
     /**
      * {@inheritdoc}
      */
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
         // If not using groups, detect manually
-        $attributes = array();
+        $attributes = [];
 
         // methods
         $reflClass = new \ReflectionClass($object);
@@ -98,7 +98,7 @@ protected function extractAttributes($object, $format = null, array $context = a
     /**
      * {@inheritdoc}
      */
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
         return $this->propertyAccessor->getValue($object, $attribute);
     }
@@ -106,7 +106,7 @@ protected function getAttributeValue($object, $attribute, $format = null, array
     /**
      * {@inheritdoc}
      */
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         try {
             $this->propertyAccessor->setValue($object, $attribute, $value);
diff --git a/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
index 52dc4f4a52dc..ece267873f25 100644
--- a/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
@@ -30,7 +30,7 @@
  */
 class PropertyNormalizer extends AbstractObjectNormalizer
 {
-    private $cache = array();
+    private $cache = [];
 
     /**
      * {@inheritdoc}
@@ -74,7 +74,7 @@ private function supports($class)
     /**
      * {@inheritdoc}
      */
-    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = array())
+    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = [])
     {
         if (!parent::isAllowedAttribute($classOrObject, $attribute, $format, $context)) {
             return false;
@@ -95,10 +95,10 @@ protected function isAllowedAttribute($classOrObject, $attribute, $format = null
     /**
      * {@inheritdoc}
      */
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
         $reflectionObject = new \ReflectionObject($object);
-        $attributes = array();
+        $attributes = [];
 
         do {
             foreach ($reflectionObject->getProperties() as $property) {
@@ -116,7 +116,7 @@ protected function extractAttributes($object, $format = null, array $context = a
     /**
      * {@inheritdoc}
      */
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
         try {
             $reflectionProperty = $this->getReflectionProperty($object, $attribute);
@@ -135,7 +135,7 @@ protected function getAttributeValue($object, $attribute, $format = null, array
     /**
      * {@inheritdoc}
      */
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         try {
             $reflectionProperty = $this->getReflectionProperty($object, $attribute);
diff --git a/src/Symfony/Component/Serializer/Serializer.php b/src/Symfony/Component/Serializer/Serializer.php
index 72c5721c8992..27014fb72d83 100644
--- a/src/Symfony/Component/Serializer/Serializer.php
+++ b/src/Symfony/Component/Serializer/Serializer.php
@@ -53,23 +53,23 @@ class Serializer implements SerializerInterface, NormalizerInterface, Denormaliz
     /**
      * @var array
      */
-    protected $normalizers = array();
+    protected $normalizers = [];
 
     /**
      * @var array
      *
      * @deprecated since 3.1 will be removed in 4.0
      */
-    protected $normalizerCache = array();
+    protected $normalizerCache = [];
 
     /**
      * @var array
      *
      * @deprecated since 3.1 will be removed in 4.0
      */
-    protected $denormalizerCache = array();
+    protected $denormalizerCache = [];
 
-    public function __construct(array $normalizers = array(), array $encoders = array())
+    public function __construct(array $normalizers = [], array $encoders = [])
     {
         foreach ($normalizers as $normalizer) {
             if ($normalizer instanceof SerializerAwareInterface) {
@@ -86,8 +86,8 @@ public function __construct(array $normalizers = array(), array $encoders = arra
         }
         $this->normalizers = $normalizers;
 
-        $decoders = array();
-        $realEncoders = array();
+        $decoders = [];
+        $realEncoders = [];
         foreach ($encoders as $encoder) {
             if ($encoder instanceof SerializerAwareInterface) {
                 $encoder->setSerializer($this);
@@ -106,7 +106,7 @@ public function __construct(array $normalizers = array(), array $encoders = arra
     /**
      * {@inheritdoc}
      */
-    final public function serialize($data, $format, array $context = array())
+    final public function serialize($data, $format, array $context = [])
     {
         if (!$this->supportsEncoding($format, $context)) {
             throw new NotEncodableValueException(sprintf('Serialization for the format %s is not supported', $format));
@@ -122,7 +122,7 @@ final public function serialize($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    final public function deserialize($data, $type, $format, array $context = array())
+    final public function deserialize($data, $type, $format, array $context = [])
     {
         if (!$this->supportsDecoding($format, $context)) {
             throw new NotEncodableValueException(sprintf('Deserialization for the format %s is not supported', $format));
@@ -136,7 +136,7 @@ final public function deserialize($data, $type, $format, array $context = array(
     /**
      * {@inheritdoc}
      */
-    public function normalize($data, $format = null, array $context = array())
+    public function normalize($data, $format = null, array $context = [])
     {
         // If a normalizer supports the given data, use it
         if ($normalizer = $this->getNormalizer($data, $format, $context)) {
@@ -148,7 +148,7 @@ public function normalize($data, $format = null, array $context = array())
         }
 
         if (\is_array($data) || $data instanceof \Traversable) {
-            $normalized = array();
+            $normalized = [];
             foreach ($data as $key => $val) {
                 $normalized[$key] = $this->normalize($val, $format, $context);
             }
@@ -172,7 +172,7 @@ public function normalize($data, $format = null, array $context = array())
      *
      * @throws NotNormalizableValueException
      */
-    public function denormalize($data, $type, $format = null, array $context = array())
+    public function denormalize($data, $type, $format = null, array $context = [])
     {
         if (!$this->normalizers) {
             throw new LogicException('You must register at least one normalizer to be able to denormalize objects.');
@@ -200,7 +200,7 @@ public function supportsNormalization($data, $format = null/*, array $context =
                 }
             }
 
-            $context = array();
+            $context = [];
         }
 
         return null !== $this->getNormalizer($data, $format, $context);
@@ -221,7 +221,7 @@ public function supportsDenormalization($data, $type, $format = null/*, array $c
                 }
             }
 
-            $context = array();
+            $context = [];
         }
 
         return null !== $this->getDenormalizer($data, $type, $format, $context);
@@ -267,7 +267,7 @@ private function getDenormalizer($data, $class, $format, array $context)
     /**
      * {@inheritdoc}
      */
-    final public function encode($data, $format, array $context = array())
+    final public function encode($data, $format, array $context = [])
     {
         return $this->encoder->encode($data, $format, $context);
     }
@@ -275,7 +275,7 @@ final public function encode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    final public function decode($data, $format, array $context = array())
+    final public function decode($data, $format, array $context = [])
     {
         return $this->decoder->decode($data, $format, $context);
     }
@@ -295,7 +295,7 @@ public function supportsEncoding($format/*, array $context = array()*/)
                 }
             }
 
-            $context = array();
+            $context = [];
         }
 
         return $this->encoder->supportsEncoding($format, $context);
@@ -316,7 +316,7 @@ public function supportsDecoding($format/*, array $context = array()*/)
                 }
             }
 
-            $context = array();
+            $context = [];
         }
 
         return $this->decoder->supportsDecoding($format, $context);
diff --git a/src/Symfony/Component/Serializer/SerializerInterface.php b/src/Symfony/Component/Serializer/SerializerInterface.php
index 196bff1a21c6..7a03ef943a20 100644
--- a/src/Symfony/Component/Serializer/SerializerInterface.php
+++ b/src/Symfony/Component/Serializer/SerializerInterface.php
@@ -27,7 +27,7 @@ interface SerializerInterface
      *
      * @return string
      */
-    public function serialize($data, $format, array $context = array());
+    public function serialize($data, $format, array $context = []);
 
     /**
      * Deserializes data into the given type.
@@ -39,5 +39,5 @@ public function serialize($data, $format, array $context = array());
      *
      * @return object
      */
-    public function deserialize($data, $type, $format, array $context = array());
+    public function deserialize($data, $type, $format, array $context = []);
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Annotation/GroupsTest.php b/src/Symfony/Component/Serializer/Tests/Annotation/GroupsTest.php
index 04729ccbb976..9b54221d7630 100644
--- a/src/Symfony/Component/Serializer/Tests/Annotation/GroupsTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Annotation/GroupsTest.php
@@ -24,7 +24,7 @@ class GroupsTest extends TestCase
      */
     public function testEmptyGroupsParameter()
     {
-        new Groups(array('value' => array()));
+        new Groups(['value' => []]);
     }
 
     /**
@@ -32,7 +32,7 @@ public function testEmptyGroupsParameter()
      */
     public function testNotAnArrayGroupsParameter()
     {
-        new Groups(array('value' => 12));
+        new Groups(['value' => 12]);
     }
 
     /**
@@ -40,20 +40,20 @@ public function testNotAnArrayGroupsParameter()
      */
     public function testInvalidGroupsParameter()
     {
-        new Groups(array('value' => array('a', 1, new \stdClass())));
+        new Groups(['value' => ['a', 1, new \stdClass()]]);
     }
 
     public function testGroupsParameters()
     {
-        $validData = array('a', 'b');
+        $validData = ['a', 'b'];
 
-        $groups = new Groups(array('value' => $validData));
+        $groups = new Groups(['value' => $validData]);
         $this->assertEquals($validData, $groups->getGroups());
     }
 
     public function testSingleGroup()
     {
-        $groups = new Groups(array('value' => 'a'));
-        $this->assertEquals(array('a'), $groups->getGroups());
+        $groups = new Groups(['value' => 'a']);
+        $this->assertEquals(['a'], $groups->getGroups());
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Annotation/MaxDepthTest.php b/src/Symfony/Component/Serializer/Tests/Annotation/MaxDepthTest.php
index 4554fc9905ca..16f10e143459 100644
--- a/src/Symfony/Component/Serializer/Tests/Annotation/MaxDepthTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Annotation/MaxDepthTest.php
@@ -25,17 +25,17 @@ class MaxDepthTest extends TestCase
      */
     public function testNotSetMaxDepthParameter()
     {
-        new MaxDepth(array());
+        new MaxDepth([]);
     }
 
     public function provideInvalidValues()
     {
-        return array(
-            array(''),
-            array('foo'),
-            array('1'),
-            array(0),
-        );
+        return [
+            [''],
+            ['foo'],
+            ['1'],
+            [0],
+        ];
     }
 
     /**
@@ -46,12 +46,12 @@ public function provideInvalidValues()
      */
     public function testNotAnIntMaxDepthParameter($value)
     {
-        new MaxDepth(array('value' => $value));
+        new MaxDepth(['value' => $value]);
     }
 
     public function testMaxDepthParameters()
     {
-        $maxDepth = new MaxDepth(array('value' => 3));
+        $maxDepth = new MaxDepth(['value' => 3]);
         $this->assertEquals(3, $maxDepth->getMaxDepth());
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/DependencyInjection/SerializerPassTest.php b/src/Symfony/Component/Serializer/Tests/DependencyInjection/SerializerPassTest.php
index fa12454fd094..5c3fedfe895a 100644
--- a/src/Symfony/Component/Serializer/Tests/DependencyInjection/SerializerPassTest.php
+++ b/src/Symfony/Component/Serializer/Tests/DependencyInjection/SerializerPassTest.php
@@ -44,8 +44,8 @@ public function testThrowExceptionWhenNoEncoders()
     {
         $container = new ContainerBuilder();
         $container->register('serializer')
-            ->addArgument(array())
-            ->addArgument(array());
+            ->addArgument([])
+            ->addArgument([]);
         $container->register('normalizer')->addTag('serializer.normalizer');
 
         $serializerPass = new SerializerPass();
@@ -56,19 +56,19 @@ public function testServicesAreOrderedAccordingToPriority()
     {
         $container = new ContainerBuilder();
 
-        $definition = $container->register('serializer')->setArguments(array(null, null));
-        $container->register('n2')->addTag('serializer.normalizer', array('priority' => 100))->addTag('serializer.encoder', array('priority' => 100));
-        $container->register('n1')->addTag('serializer.normalizer', array('priority' => 200))->addTag('serializer.encoder', array('priority' => 200));
+        $definition = $container->register('serializer')->setArguments([null, null]);
+        $container->register('n2')->addTag('serializer.normalizer', ['priority' => 100])->addTag('serializer.encoder', ['priority' => 100]);
+        $container->register('n1')->addTag('serializer.normalizer', ['priority' => 200])->addTag('serializer.encoder', ['priority' => 200]);
         $container->register('n3')->addTag('serializer.normalizer')->addTag('serializer.encoder');
 
         $serializerPass = new SerializerPass();
         $serializerPass->process($container);
 
-        $expected = array(
+        $expected = [
             new Reference('n1'),
             new Reference('n2'),
             new Reference('n3'),
-        );
+        ];
         $this->assertEquals($expected, $definition->getArgument(0));
         $this->assertEquals($expected, $definition->getArgument(1));
     }
diff --git a/src/Symfony/Component/Serializer/Tests/DeserializeNestedArrayOfObjectsTest.php b/src/Symfony/Component/Serializer/Tests/DeserializeNestedArrayOfObjectsTest.php
index e94c7dc0d89a..ffdae811bb51 100644
--- a/src/Symfony/Component/Serializer/Tests/DeserializeNestedArrayOfObjectsTest.php
+++ b/src/Symfony/Component/Serializer/Tests/DeserializeNestedArrayOfObjectsTest.php
@@ -22,12 +22,12 @@ class DeserializeNestedArrayOfObjectsTest extends TestCase
 {
     public function provider()
     {
-        return array(
+        return [
             //from property PhpDoc
-            array(Zoo::class),
+            [Zoo::class],
             //from argument constructor PhpDoc
-            array(ZooImmutable::class),
-        );
+            [ZooImmutable::class],
+        ];
     }
 
     /**
@@ -43,10 +43,10 @@ public function testPropertyPhpDoc($class)
     ]
 }
 EOF;
-        $serializer = new Serializer(array(
+        $serializer = new Serializer([
             new ObjectNormalizer(null, null, null, new PhpDocExtractor()),
             new ArrayDenormalizer(),
-        ), array('json' => new JsonEncoder()));
+        ], ['json' => new JsonEncoder()]);
         //WHEN
         /** @var Zoo $zoo */
         $zoo = $serializer->deserialize($json, $class, 'json');
@@ -59,7 +59,7 @@ public function testPropertyPhpDoc($class)
 class Zoo
 {
     /** @var Animal[] */
-    private $animals = array();
+    private $animals = [];
 
     /**
      * @return Animal[]
@@ -81,12 +81,12 @@ public function setAnimals(array $animals)
 class ZooImmutable
 {
     /** @var Animal[] */
-    private $animals = array();
+    private $animals = [];
 
     /**
      * @param Animal[] $animals
      */
-    public function __construct(array $animals = array())
+    public function __construct(array $animals = [])
     {
         $this->animals = $animals;
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/ChainDecoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/ChainDecoderTest.php
index 7d860f65f27f..3a84d99dde28 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/ChainDecoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/ChainDecoderTest.php
@@ -32,12 +32,12 @@ protected function setUp()
 
         $this->decoder1
             ->method('supportsDecoding')
-            ->will($this->returnValueMap(array(
-                array(self::FORMAT_1, array(), true),
-                array(self::FORMAT_2, array(), false),
-                array(self::FORMAT_3, array(), false),
-                array(self::FORMAT_3, array('foo' => 'bar'), true),
-            )));
+            ->will($this->returnValueMap([
+                [self::FORMAT_1, [], true],
+                [self::FORMAT_2, [], false],
+                [self::FORMAT_3, [], false],
+                [self::FORMAT_3, ['foo' => 'bar'], true],
+            ]));
 
         $this->decoder2 = $this
             ->getMockBuilder('Symfony\Component\Serializer\Encoder\DecoderInterface')
@@ -45,13 +45,13 @@ protected function setUp()
 
         $this->decoder2
             ->method('supportsDecoding')
-            ->will($this->returnValueMap(array(
-                array(self::FORMAT_1, array(), false),
-                array(self::FORMAT_2, array(), true),
-                array(self::FORMAT_3, array(), false),
-            )));
+            ->will($this->returnValueMap([
+                [self::FORMAT_1, [], false],
+                [self::FORMAT_2, [], true],
+                [self::FORMAT_3, [], false],
+            ]));
 
-        $this->chainDecoder = new ChainDecoder(array($this->decoder1, $this->decoder2));
+        $this->chainDecoder = new ChainDecoder([$this->decoder1, $this->decoder2]);
     }
 
     public function testSupportsDecoding()
@@ -59,7 +59,7 @@ public function testSupportsDecoding()
         $this->assertTrue($this->chainDecoder->supportsDecoding(self::FORMAT_1));
         $this->assertTrue($this->chainDecoder->supportsDecoding(self::FORMAT_2));
         $this->assertFalse($this->chainDecoder->supportsDecoding(self::FORMAT_3));
-        $this->assertTrue($this->chainDecoder->supportsDecoding(self::FORMAT_3, array('foo' => 'bar')));
+        $this->assertTrue($this->chainDecoder->supportsDecoding(self::FORMAT_3, ['foo' => 'bar']));
     }
 
     public function testDecode()
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/ChainEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/ChainEncoderTest.php
index 82c64cc149c6..48ccbdca0aca 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/ChainEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/ChainEncoderTest.php
@@ -34,12 +34,12 @@ protected function setUp()
 
         $this->encoder1
             ->method('supportsEncoding')
-            ->will($this->returnValueMap(array(
-                array(self::FORMAT_1, array(), true),
-                array(self::FORMAT_2, array(), false),
-                array(self::FORMAT_3, array(), false),
-                array(self::FORMAT_3, array('foo' => 'bar'), true),
-            )));
+            ->will($this->returnValueMap([
+                [self::FORMAT_1, [], true],
+                [self::FORMAT_2, [], false],
+                [self::FORMAT_3, [], false],
+                [self::FORMAT_3, ['foo' => 'bar'], true],
+            ]));
 
         $this->encoder2 = $this
             ->getMockBuilder('Symfony\Component\Serializer\Encoder\EncoderInterface')
@@ -47,13 +47,13 @@ protected function setUp()
 
         $this->encoder2
             ->method('supportsEncoding')
-            ->will($this->returnValueMap(array(
-                array(self::FORMAT_1, array(), false),
-                array(self::FORMAT_2, array(), true),
-                array(self::FORMAT_3, array(), false),
-            )));
+            ->will($this->returnValueMap([
+                [self::FORMAT_1, [], false],
+                [self::FORMAT_2, [], true],
+                [self::FORMAT_3, [], false],
+            ]));
 
-        $this->chainEncoder = new ChainEncoder(array($this->encoder1, $this->encoder2));
+        $this->chainEncoder = new ChainEncoder([$this->encoder1, $this->encoder2]);
     }
 
     public function testSupportsEncoding()
@@ -61,7 +61,7 @@ public function testSupportsEncoding()
         $this->assertTrue($this->chainEncoder->supportsEncoding(self::FORMAT_1));
         $this->assertTrue($this->chainEncoder->supportsEncoding(self::FORMAT_2));
         $this->assertFalse($this->chainEncoder->supportsEncoding(self::FORMAT_3));
-        $this->assertTrue($this->chainEncoder->supportsEncoding(self::FORMAT_3, array('foo' => 'bar')));
+        $this->assertTrue($this->chainEncoder->supportsEncoding(self::FORMAT_3, ['foo' => 'bar']));
     }
 
     public function testEncode()
@@ -69,7 +69,7 @@ public function testEncode()
         $this->encoder1->expects($this->never())->method('encode');
         $this->encoder2->expects($this->once())->method('encode');
 
-        $this->chainEncoder->encode(array('foo' => 123), self::FORMAT_2);
+        $this->chainEncoder->encode(['foo' => 123], self::FORMAT_2);
     }
 
     /**
@@ -77,7 +77,7 @@ public function testEncode()
      */
     public function testEncodeUnsupportedFormat()
     {
-        $this->chainEncoder->encode(array('foo' => 123), self::FORMAT_3);
+        $this->chainEncoder->encode(['foo' => 123], self::FORMAT_3);
     }
 
     public function testNeedsNormalizationBasic()
@@ -98,7 +98,7 @@ public function testNeedsNormalizationChainNormalizationAware($bool)
         $chainEncoder->method('supportsEncoding')->willReturn(true);
         $chainEncoder->method('needsNormalization')->willReturn($bool);
 
-        $sut = new ChainEncoder(array($chainEncoder));
+        $sut = new ChainEncoder([$chainEncoder]);
 
         $this->assertEquals($bool, $sut->needsNormalization(self::FORMAT_1));
     }
@@ -106,17 +106,17 @@ public function testNeedsNormalizationChainNormalizationAware($bool)
     public function testNeedsNormalizationNormalizationAware()
     {
         $encoder = new NormalizationAwareEncoder();
-        $sut = new ChainEncoder(array($encoder));
+        $sut = new ChainEncoder([$encoder]);
 
         $this->assertFalse($sut->needsNormalization(self::FORMAT_1));
     }
 
     public function booleanProvider()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 }
 
@@ -131,7 +131,7 @@ public function supportsEncoding($format)
         return true;
     }
 
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
index a5e5c256f34a..1eb673e8e21b 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
@@ -37,7 +37,7 @@ public function testSupportEncoding()
 
     public function testEncode()
     {
-        $value = array('foo' => 'hello', 'bar' => 'hey ho');
+        $value = ['foo' => 'hello', 'bar' => 'hey ho'];
 
         $this->assertEquals(<<<'CSV'
 foo,bar
@@ -49,10 +49,10 @@ public function testEncode()
 
     public function testEncodeCollection()
     {
-        $value = array(
-            array('foo' => 'hello', 'bar' => 'hey ho'),
-            array('foo' => 'hi', 'bar' => 'let\'s go'),
-        );
+        $value = [
+            ['foo' => 'hello', 'bar' => 'hey ho'],
+            ['foo' => 'hi', 'bar' => 'let\'s go'],
+        ];
 
         $this->assertEquals(<<<'CSV'
 foo,bar
@@ -70,7 +70,7 @@ public function testEncodePlainIndexedArray()
 a,b,c
 
 CSV
-            , $this->encoder->encode(array('a', 'b', 'c'), 'csv'));
+            , $this->encoder->encode(['a', 'b', 'c'], 'csv'));
     }
 
     public function testEncodeNonArray()
@@ -85,10 +85,10 @@ public function testEncodeNonArray()
 
     public function testEncodeNestedArrays()
     {
-        $value = array('foo' => 'hello', 'bar' => array(
-            array('id' => 'yo', 1 => 'wesh'),
-            array('baz' => 'Halo', 'foo' => 'olá'),
-        ));
+        $value = ['foo' => 'hello', 'bar' => [
+            ['id' => 'yo', 1 => 'wesh'],
+            ['baz' => 'Halo', 'foo' => 'olá'],
+        ]];
 
         $this->assertEquals(<<<'CSV'
 foo,bar.0.id,bar.0.1,bar.1.baz,bar.1.foo
@@ -102,7 +102,7 @@ public function testEncodeCustomSettings()
     {
         $this->encoder = new CsvEncoder(';', "'", '|', '-');
 
-        $value = array('a' => 'he\'llo', 'c' => array('d' => 'foo'));
+        $value = ['a' => 'he\'llo', 'c' => ['d' => 'foo']];
 
         $this->assertEquals(<<<'CSV'
 a;c-d
@@ -114,34 +114,34 @@ public function testEncodeCustomSettings()
 
     public function testEncodeCustomSettingsPassedInContext()
     {
-        $value = array('a' => 'he\'llo', 'c' => array('d' => 'foo'));
+        $value = ['a' => 'he\'llo', 'c' => ['d' => 'foo']];
 
         $this->assertSame(<<<'CSV'
 a;c-d
 'he''llo';foo
 
 CSV
-        , $this->encoder->encode($value, 'csv', array(
+        , $this->encoder->encode($value, 'csv', [
             CsvEncoder::DELIMITER_KEY => ';',
             CsvEncoder::ENCLOSURE_KEY => "'",
             CsvEncoder::ESCAPE_CHAR_KEY => '|',
             CsvEncoder::KEY_SEPARATOR_KEY => '-',
-        )));
+        ]));
     }
 
     public function testEncodeEmptyArray()
     {
-        $this->assertEquals("\n\n", $this->encoder->encode(array(), 'csv'));
-        $this->assertEquals("\n\n", $this->encoder->encode(array(array()), 'csv'));
+        $this->assertEquals("\n\n", $this->encoder->encode([], 'csv'));
+        $this->assertEquals("\n\n", $this->encoder->encode([[]], 'csv'));
     }
 
     public function testEncodeVariableStructure()
     {
-        $value = array(
-            array('a' => array('foo', 'bar')),
-            array('a' => array(), 'b' => 'baz'),
-            array('a' => array('bar', 'foo'), 'c' => 'pong'),
-        );
+        $value = [
+            ['a' => ['foo', 'bar']],
+            ['a' => [], 'b' => 'baz'],
+            ['a' => ['bar', 'foo'], 'c' => 'pong'],
+        ];
         $csv = <<<CSV
 a.0,a.1,c,b
 foo,bar,,
@@ -155,15 +155,15 @@ public function testEncodeVariableStructure()
 
     public function testEncodeCustomHeaders()
     {
-        $context = array(
-            CsvEncoder::HEADERS_KEY => array(
+        $context = [
+            CsvEncoder::HEADERS_KEY => [
                 'b',
                 'c',
-            ),
-        );
-        $value = array(
-            array('a' => 'foo', 'b' => 'bar'),
-        );
+            ],
+        ];
+        $value = [
+            ['a' => 'foo', 'b' => 'bar'],
+        ];
         $csv = <<<CSV
 b,c,a
 bar,,foo
@@ -181,7 +181,7 @@ public function testSupportsDecoding()
 
     public function testDecode()
     {
-        $expected = array('foo' => 'a', 'bar' => 'b');
+        $expected = ['foo' => 'a', 'bar' => 'b'];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar
@@ -192,11 +192,11 @@ public function testDecode()
 
     public function testDecodeCollection()
     {
-        $expected = array(
-            array('foo' => 'a', 'bar' => 'b'),
-            array('foo' => 'c', 'bar' => 'd'),
-            array('foo' => 'f'),
-        );
+        $expected = [
+            ['foo' => 'a', 'bar' => 'b'],
+            ['foo' => 'c', 'bar' => 'd'],
+            ['foo' => 'f'],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar
@@ -210,12 +210,12 @@ public function testDecodeCollection()
 
     public function testDecodeToManyRelation()
     {
-        $expected = array(
-            array('foo' => 'bar', 'relations' => array(array('a' => 'b'), array('a' => 'b'))),
-            array('foo' => 'bat', 'relations' => array(array('a' => 'b'), array('a' => ''))),
-            array('foo' => 'bat', 'relations' => array(array('a' => 'b'))),
-            array('foo' => 'baz', 'relations' => array(array('a' => 'c'), array('a' => 'c'))),
-        );
+        $expected = [
+            ['foo' => 'bar', 'relations' => [['a' => 'b'], ['a' => 'b']]],
+            ['foo' => 'bat', 'relations' => [['a' => 'b'], ['a' => '']]],
+            ['foo' => 'bat', 'relations' => [['a' => 'b']]],
+            ['foo' => 'baz', 'relations' => [['a' => 'c'], ['a' => 'c']]],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,relations.0.a,relations.1.a
@@ -229,10 +229,10 @@ public function testDecodeToManyRelation()
 
     public function testDecodeNestedArrays()
     {
-        $expected = array(
-            array('foo' => 'a', 'bar' => array('baz' => array('bat' => 'b'))),
-            array('foo' => 'c', 'bar' => array('baz' => array('bat' => 'd'))),
-        );
+        $expected = [
+            ['foo' => 'a', 'bar' => ['baz' => ['bat' => 'b']]],
+            ['foo' => 'c', 'bar' => ['baz' => ['bat' => 'd']]],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar.baz.bat
@@ -246,7 +246,7 @@ public function testDecodeCustomSettings()
     {
         $this->encoder = new CsvEncoder(';', "'", '|', '-');
 
-        $expected = array('a' => 'hell\'o', 'bar' => array('baz' => 'b'));
+        $expected = ['a' => 'hell\'o', 'bar' => ['baz' => 'b']];
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 a;bar-baz
 'hell''o';b;c
@@ -256,26 +256,26 @@ public function testDecodeCustomSettings()
 
     public function testDecodeCustomSettingsPassedInContext()
     {
-        $expected = array('a' => 'hell\'o', 'bar' => array('baz' => 'b'));
+        $expected = ['a' => 'hell\'o', 'bar' => ['baz' => 'b']];
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 a;bar-baz
 'hell''o';b;c
 CSV
-        , 'csv', array(
+        , 'csv', [
             CsvEncoder::DELIMITER_KEY => ';',
             CsvEncoder::ENCLOSURE_KEY => "'",
             CsvEncoder::ESCAPE_CHAR_KEY => '|',
             CsvEncoder::KEY_SEPARATOR_KEY => '-',
-        )));
+        ]));
     }
 
     public function testDecodeMalformedCollection()
     {
-        $expected = array(
-            array('foo' => 'a', 'bar' => 'b'),
-            array('foo' => 'c', 'bar' => 'd'),
-            array('foo' => 'f'),
-        );
+        $expected = [
+            ['foo' => 'a', 'bar' => 'b'],
+            ['foo' => 'c', 'bar' => 'd'],
+            ['foo' => 'f'],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar
@@ -289,6 +289,6 @@ public function testDecodeMalformedCollection()
 
     public function testDecodeEmptyArray()
     {
-        $this->assertEquals(array(), $this->encoder->decode('', 'csv'));
+        $this->assertEquals([], $this->encoder->decode('', 'csv'));
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/JsonDecodeTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/JsonDecodeTest.php
index 774064d43a85..76a1b6324631 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/JsonDecodeTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/JsonDecodeTest.php
@@ -47,12 +47,12 @@ public function decodeProvider()
         $stdClass = new \stdClass();
         $stdClass->foo = 'bar';
 
-        $assoc = array('foo' => 'bar');
+        $assoc = ['foo' => 'bar'];
 
-        return array(
-            array('{"foo": "bar"}', $stdClass, array()),
-            array('{"foo": "bar"}', $assoc, array('json_decode_associative' => true)),
-        );
+        return [
+            ['{"foo": "bar"}', $stdClass, []],
+            ['{"foo": "bar"}', $assoc, ['json_decode_associative' => true]],
+        ];
     }
 
     /**
@@ -67,9 +67,9 @@ public function testDecodeWithException($value)
 
     public function decodeProviderException()
     {
-        return array(
-            array("{'foo': 'bar'}"),
-            array('kaboom!'),
-        );
+        return [
+            ["{'foo': 'bar'}"],
+            ['kaboom!'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/JsonEncodeTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/JsonEncodeTest.php
index ed33233fb47e..42a460e52040 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/JsonEncodeTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/JsonEncodeTest.php
@@ -43,10 +43,10 @@ public function testEncode($toEncode, $expected, $context)
 
     public function encodeProvider()
     {
-        return array(
-            array(array(), '[]', array()),
-            array(array(), '{}', array('json_encode_options' => JSON_FORCE_OBJECT)),
-        );
+        return [
+            [[], '[]', []],
+            [[], '{}', ['json_encode_options' => JSON_FORCE_OBJECT]],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/JsonEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/JsonEncoderTest.php
index 1977d4f19ce8..439fbda1638a 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/JsonEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/JsonEncoderTest.php
@@ -24,7 +24,7 @@ class JsonEncoderTest extends TestCase
     protected function setUp()
     {
         $this->encoder = new JsonEncoder();
-        $this->serializer = new Serializer(array(new CustomNormalizer()), array('json' => new JsonEncoder()));
+        $this->serializer = new Serializer([new CustomNormalizer()], ['json' => new JsonEncoder()]);
     }
 
     public function testEncodeScalar()
@@ -48,16 +48,16 @@ public function testComplexObject()
 
     public function testOptions()
     {
-        $context = array('json_encode_options' => JSON_NUMERIC_CHECK);
+        $context = ['json_encode_options' => JSON_NUMERIC_CHECK];
 
-        $arr = array();
+        $arr = [];
         $arr['foo'] = '3';
 
         $expected = '{"foo":3}';
 
         $this->assertEquals($expected, $this->serializer->serialize($arr, 'json', $context));
 
-        $arr = array();
+        $arr = [];
         $arr['foo'] = '3';
 
         $expected = '{"foo":"3"}';
@@ -70,22 +70,22 @@ public function testOptions()
      */
     public function testEncodeNotUtf8WithoutPartialOnError()
     {
-        $arr = array(
+        $arr = [
             'utf8' => 'Hello World!',
             'notUtf8' => "\xb0\xd0\xb5\xd0",
-        );
+        ];
 
         $this->encoder->encode($arr, 'json');
     }
 
     public function testEncodeNotUtf8WithPartialOnError()
     {
-        $context = array('json_encode_options' => JSON_PARTIAL_OUTPUT_ON_ERROR);
+        $context = ['json_encode_options' => JSON_PARTIAL_OUTPUT_ON_ERROR];
 
-        $arr = array(
+        $arr = [
             'utf8' => 'Hello World!',
             'notUtf8' => "\xb0\xd0\xb5\xd0",
-        );
+        ];
 
         $result = $this->encoder->encode($arr, 'json', $context);
         $jsonLastError = json_last_error();
@@ -112,8 +112,8 @@ protected function getObject()
     {
         $obj = new \stdClass();
         $obj->foo = 'foo';
-        $obj->bar = array('a', 'b');
-        $obj->baz = array('key' => 'val', 'key2' => 'val', 'A B' => 'bar', 'item' => array(array('title' => 'title1'), array('title' => 'title2')), 'Barry' => array('FooBar' => array('Baz' => 'Ed', '@id' => 1)));
+        $obj->bar = ['a', 'b'];
+        $obj->baz = ['key' => 'val', 'key2' => 'val', 'A B' => 'bar', 'item' => [['title' => 'title1'], ['title' => 'title2']], 'Barry' => ['FooBar' => ['Baz' => 'Ed', '@id' => 1]]];
         $obj->qux = '1';
 
         return $obj;
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
index df40892cadec..509ba0c5ca18 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
@@ -32,7 +32,7 @@ class XmlEncoderTest extends TestCase
     protected function setUp()
     {
         $this->encoder = new XmlEncoder();
-        $serializer = new Serializer(array(new CustomNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([new CustomNormalizer()], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
     }
 
@@ -71,19 +71,19 @@ public function testDocTypeIsNotAllowed()
     public function testAttributes()
     {
         $obj = new ScalarDummy();
-        $obj->xmlFoo = array(
-            'foo-bar' => array(
+        $obj->xmlFoo = [
+            'foo-bar' => [
                 '@id' => 1,
                 '@name' => 'Bar',
-            ),
-            'Foo' => array(
+            ],
+            'Foo' => [
                 'Bar' => 'Test',
                 '@Type' => 'test',
-            ),
+            ],
             'föo_bär' => 'a',
-            'Bar' => array(1, 2, 3),
+            'Bar' => [1, 2, 3],
             'a' => 'b',
-        );
+        ];
         $expected = '<?xml version="1.0"?>'."\n".
             '<response>'.
             '<foo-bar id="1" name="Bar"/>'.
@@ -100,11 +100,11 @@ public function testAttributes()
     public function testElementNameValid()
     {
         $obj = new ScalarDummy();
-        $obj->xmlFoo = array(
+        $obj->xmlFoo = [
             'foo-bar' => 'a',
             'foo_bar' => 'a',
             'föo_bär' => 'a',
-        );
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response>'.
@@ -119,7 +119,7 @@ public function testElementNameValid()
     public function testEncodeSimpleXML()
     {
         $xml = simplexml_load_string('<firstname>Peter</firstname>');
-        $array = array('person' => $xml);
+        $array = ['person' => $xml];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><person><firstname>Peter</firstname></person></response>'."\n";
@@ -130,35 +130,35 @@ public function testEncodeSimpleXML()
     public function testEncodeXmlAttributes()
     {
         $xml = simplexml_load_string('<firstname>Peter</firstname>');
-        $array = array('person' => $xml);
+        $array = ['person' => $xml];
 
         $expected = '<?xml version="1.1" encoding="utf-8" standalone="yes"?>'."\n".
             '<response><person><firstname>Peter</firstname></person></response>'."\n";
 
-        $context = array(
+        $context = [
             'xml_version' => '1.1',
             'xml_encoding' => 'utf-8',
             'xml_standalone' => true,
-        );
+        ];
 
         $this->assertSame($expected, $this->encoder->encode($array, 'xml', $context));
     }
 
     public function testEncodeRemovingEmptyTags()
     {
-        $array = array('person' => array('firstname' => 'Peter', 'lastname' => null));
+        $array = ['person' => ['firstname' => 'Peter', 'lastname' => null]];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><person><firstname>Peter</firstname></person></response>'."\n";
 
-        $context = array('remove_empty_tags' => true);
+        $context = ['remove_empty_tags' => true];
 
         $this->assertSame($expected, $this->encoder->encode($array, 'xml', $context));
     }
 
     public function testEncodeNotRemovingEmptyTags()
     {
-        $array = array('person' => array('firstname' => 'Peter', 'lastname' => null));
+        $array = ['person' => ['firstname' => 'Peter', 'lastname' => null]];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><person><firstname>Peter</firstname><lastname/></person></response>'."\n";
@@ -168,7 +168,7 @@ public function testEncodeNotRemovingEmptyTags()
 
     public function testContext()
     {
-        $array = array('person' => array('name' => 'George Abitbol'));
+        $array = ['person' => ['name' => 'George Abitbol']];
         $expected = <<<'XML'
 <?xml version="1.0"?>
 <response>
@@ -179,19 +179,19 @@ public function testContext()
 
 XML;
 
-        $context = array(
+        $context = [
             'xml_format_output' => true,
-        );
+        ];
 
         $this->assertSame($expected, $this->encoder->encode($array, 'xml', $context));
     }
 
     public function testEncodeScalarRootAttributes()
     {
-        $array = array(
+        $array = [
             '#' => 'Paul',
             '@gender' => 'm',
-        );
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response gender="m">Paul</response>'."\n";
@@ -201,10 +201,10 @@ public function testEncodeScalarRootAttributes()
 
     public function testEncodeRootAttributes()
     {
-        $array = array(
+        $array = [
             'firstname' => 'Paul',
             '@gender' => 'm',
-        );
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response gender="m"><firstname>Paul</firstname></response>'."\n";
@@ -214,9 +214,9 @@ public function testEncodeRootAttributes()
 
     public function testEncodeCdataWrapping()
     {
-        $array = array(
+        $array = [
             'firstname' => 'Paul <or Me>',
-        );
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><firstname><![CDATA[Paul <or Me>]]></firstname></response>'."\n";
@@ -226,9 +226,9 @@ public function testEncodeCdataWrapping()
 
     public function testEncodeScalarWithAttribute()
     {
-        $array = array(
-            'person' => array('@gender' => 'M', '#' => 'Peter'),
-        );
+        $array = [
+            'person' => ['@gender' => 'M', '#' => 'Peter'],
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><person gender="M">Peter</person></response>'."\n";
@@ -251,7 +251,7 @@ public function testDecodeBigDigitAttributes()
 <document index="182077241760011681341821060401202210011000045913000000017100">Name</document>
 XML;
 
-        $this->assertSame(array('@index' => 182077241760011681341821060401202210011000045913000000017100, '#' => 'Name'), $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => 182077241760011681341821060401202210011000045913000000017100, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testDecodeNegativeIntAttribute()
@@ -261,7 +261,7 @@ public function testDecodeNegativeIntAttribute()
 <document index="-1234">Name</document>
 XML;
 
-        $this->assertSame(array('@index' => -1234, '#' => 'Name'), $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => -1234, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testDecodeFloatAttribute()
@@ -271,7 +271,7 @@ public function testDecodeFloatAttribute()
 <document index="-12.11">Name</document>
 XML;
 
-        $this->assertSame(array('@index' => -12.11, '#' => 'Name'), $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => -12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testDecodeNegativeFloatAttribute()
@@ -281,7 +281,7 @@ public function testDecodeNegativeFloatAttribute()
 <document index="-12.11">Name</document>
 XML;
 
-        $this->assertSame(array('@index' => -12.11, '#' => 'Name'), $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => -12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testNoTypeCastAttribute()
@@ -293,16 +293,16 @@ public function testNoTypeCastAttribute()
 </document>
 XML;
 
-        $data = $this->encoder->decode($source, 'xml', array('xml_type_cast_attributes' => false));
-        $expected = array(
+        $data = $this->encoder->decode($source, 'xml', ['xml_type_cast_attributes' => false]);
+        $expected = [
             '@a' => '018',
             '@b' => '-12.11',
-            'node' => array(
+            'node' => [
                 '@a' => '018',
                 '@b' => '-12.11',
                 '#' => '',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expected, $data);
     }
 
@@ -324,14 +324,14 @@ public function testEncodeWithNamespace()
 
     public function testEncodeSerializerXmlRootNodeNameOption()
     {
-        $options = array('xml_root_node_name' => 'test');
+        $options = ['xml_root_node_name' => 'test'];
         $this->encoder = new XmlEncoder();
-        $serializer = new Serializer(array(), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
 
-        $array = array(
-            'person' => array('@gender' => 'M', '#' => 'Peter'),
-        );
+        $array = [
+            'person' => ['@gender' => 'M', '#' => 'Peter'],
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<test><person gender="M">Peter</person></test>'."\n";
@@ -342,7 +342,7 @@ public function testEncodeSerializerXmlRootNodeNameOption()
     public function testEncodeTraversableWhenNormalizable()
     {
         $this->encoder = new XmlEncoder();
-        $serializer = new Serializer(array(new CustomNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([new CustomNormalizer()], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
 
         $expected = <<<'XML'
@@ -364,9 +364,9 @@ public function testDecode()
 
     public function testDecodeCdataWrapping()
     {
-        $expected = array(
+        $expected = [
             'firstname' => 'Paul <or Me>',
-        );
+        ];
 
         $xml = '<?xml version="1.0"?>'."\n".
             '<response><firstname><![CDATA[Paul <or Me>]]></firstname></response>'."\n";
@@ -376,9 +376,9 @@ public function testDecodeCdataWrapping()
 
     public function testDecodeCdataWrappingAndWhitespace()
     {
-        $expected = array(
+        $expected = [
             'firstname' => 'Paul <or Me>',
-        );
+        ];
 
         $xml = '<?xml version="1.0"?>'."\n".
             '<response><firstname>'."\n".
@@ -400,9 +400,9 @@ public function testDecodeScalarWithAttribute()
         $source = '<?xml version="1.0"?>'."\n".
             '<response><person gender="M">Peter</person></response>'."\n";
 
-        $expected = array(
-            'person' => array('@gender' => 'M', '#' => 'Peter'),
-        );
+        $expected = [
+            'person' => ['@gender' => 'M', '#' => 'Peter'],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -412,10 +412,10 @@ public function testDecodeScalarRootAttributes()
         $source = '<?xml version="1.0"?>'."\n".
             '<person gender="M">Peter</person>'."\n";
 
-        $expected = array(
+        $expected = [
             '#' => 'Peter',
             '@gender' => 'M',
-        );
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -425,11 +425,11 @@ public function testDecodeRootAttributes()
         $source = '<?xml version="1.0"?>'."\n".
             '<person gender="M"><firstname>Peter</firstname><lastnam
10000
e>Mac Calloway</lastname></person>'."\n";
 
-        $expected = array(
+        $expected = [
             'firstname' => 'Peter',
             'lastname' => 'Mac Calloway',
             '@gender' => 'M',
-        );
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -444,12 +444,12 @@ public function testDecodeArray()
             '</people>'.
             '</response>'."\n";
 
-        $expected = array(
-            'people' => array('person' => array(
-                array('firstname' => 'Benjamin', 'lastname' => 'Alexandre'),
-                array('firstname' => 'Damien', 'lastname' => 'Clay'),
-            )),
-        );
+        $expected = [
+            'people' => ['person' => [
+                ['firstname' => 'Benjamin', 'lastname' => 'Alexandre'],
+                ['firstname' => 'Damien', 'lastname' => 'Clay'],
+            ]],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -507,10 +507,10 @@ public function testDecodeIgnoreWhiteSpace()
     </person>
 </people>
 XML;
-        $expected = array('person' => array(
-            array('firstname' => 'Benjamin', 'lastname' => 'Alexandre'),
-            array('firstname' => 'Damien', 'lastname' => 'Clay'),
-        ));
+        $expected = ['person' => [
+            ['firstname' => 'Benjamin', 'lastname' => 'Alexandre'],
+            ['firstname' => 'Damien', 'lastname' => 'Clay'],
+        ]];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -518,32 +518,32 @@ public function testDecodeIgnoreWhiteSpace()
     public function testDecodeWithoutItemHash()
     {
         $obj = new ScalarDummy();
-        $obj->xmlFoo = array(
-            'foo-bar' => array(
+        $obj->xmlFoo = [
+            'foo-bar' => [
                 '@key' => 'value',
-                'item' => array('@key' => 'key', 'key-val' => 'val'),
-            ),
-            'Foo' => array(
+                'item' => ['@key' => 'key', 'key-val' => 'val'],
+            ],
+            'Foo' => [
                 'Bar' => 'Test',
                 '@Type' => 'test',
-            ),
+            ],
             'föo_bär' => 'a',
-            'Bar' => array(1, 2, 3),
+            'Bar' => [1, 2, 3],
             'a' => 'b',
-        );
-        $expected = array(
-            'foo-bar' => array(
+        ];
+        $expected = [
+            'foo-bar' => [
                 '@key' => 'value',
-                'key' => array('@key' => 'key', 'key-val' => 'val'),
-            ),
-            'Foo' => array(
+                'key' => ['@key' => 'key', 'key-val' => 'val'],
+            ],
+            'Foo' => [
                 'Bar' => 'Test',
                 '@Type' => 'test',
-            ),
+            ],
             'föo_bär' => 'a',
-            'Bar' => array(1, 2, 3),
+            'Bar' => [1, 2, 3],
             'a' => 'b',
-        );
+        ];
         $xml = $this->encoder->encode($obj, 'xml');
         $this->assertEquals($expected, $this->encoder->decode($xml, 'xml'));
     }
@@ -603,7 +603,7 @@ protected function getNamespacedXmlSource()
 
     protected function getNamespacedArray()
     {
-        return array(
+        return [
             '@xmlns' => 'http://www.w3.org/2005/Atom',
             '@xmlns:app' => 'http://www.w3.org/2007/app',
             '@xmlns:media' => 'http://search.yahoo.com/mrss/',
@@ -611,36 +611,36 @@ protected function getNamespacedArray()
             '@xmlns:yt' => 'http://gdata.youtube.com/schemas/2007',
             'qux' => '1',
             'app:foo' => 'foo',
-            'yt:bar' => array('a', 'b'),
-            'media:baz' => array(
+            'yt:bar' => ['a', 'b'],
+            'media:baz' => [
                 'media:key' => 'val',
                 'media:key2' => 'val',
                 'A B' => 'bar',
-                'item' => array(
-                    array(
+                'item' => [
+                    [
                         'title' => 'title1',
-                    ),
-                    array(
+                    ],
+                    [
                         'title' => 'title2',
-                    ),
-                ),
-                'Barry' => array(
+                    ],
+                ],
+                'Barry' => [
                     '@size' => 'large',
-                    'FooBar' => array(
+                    'FooBar' => [
                         'Baz' => 'Ed',
                         '@gd:id' => 1,
-                    ),
-                ),
-            ),
-        );
+                    ],
+                ],
+            ],
+        ];
     }
 
     protected function getObject()
     {
         $obj = new Dummy();
         $obj->foo = 'foo';
-        $obj->bar = array('a', 'b');
-        $obj->baz = array('key' => 'val', 'key2' => 'val', 'A B' => 'bar', 'item' => array(array('title' => 'title1'), array('title' => 'title2')), 'Barry' => array('FooBar' => array('Baz' => 'Ed', '@id' => 1)));
+        $obj->bar = ['a', 'b'];
+        $obj->baz = ['key' => 'val', 'key2' => 'val', 'A B' => 'bar', 'item' => [['title' => 'title1'], ['title' => 'title2']], 'Barry' => ['FooBar' => ['Baz' => 'Ed', '@id' => 1]]];
         $obj->qux = '1';
 
         return $obj;
@@ -654,7 +654,7 @@ public function testEncodeXmlWithBoolValue()
 
 XML;
 
-        $actualXml = $this->encoder->encode(array('foo' => true, 'bar' => false), 'xml');
+        $actualXml = $this->encoder->encode(['foo' => true, 'bar' => false], 'xml');
 
         $this->assertEquals($expectedXml, $actualXml);
     }
@@ -663,7 +663,7 @@ public function testEncodeXmlWithDateTimeObjectValue()
     {
         $xmlEncoder = $this->createXmlEncoderWithDateTimeNormalizer();
 
-        $actualXml = $xmlEncoder->encode(array('dateTime' => new \DateTime($this->exampleDateTimeString)), 'xml');
+        $actualXml = $xmlEncoder->encode(['dateTime' => new \DateTime($this->exampleDateTimeString)], 'xml');
 
         $this->assertEquals($this->createXmlWithDateTime(), $actualXml);
     }
@@ -672,7 +672,7 @@ public function testEncodeXmlWithDateTimeObjectField()
     {
         $xmlEncoder = $this->createXmlEncoderWithDateTimeNormalizer();
 
-        $actualXml = $xmlEncoder->encode(array('foo' => array('@dateTime' => new \DateTime($this->exampleDateTimeString))), 'xml');
+        $actualXml = $xmlEncoder->encode(['foo' => ['@dateTime' => new \DateTime($this->exampleDateTimeString)]], 'xml');
 
         $this->assertEquals($this->createXmlWithDateTimeField(), $actualXml);
     }
@@ -683,7 +683,7 @@ public function testEncodeXmlWithDateTimeObjectField()
     private function createXmlEncoderWithDateTimeNormalizer()
     {
         $encoder = new XmlEncoder();
-        $serializer = new Serializer(array($this->createMockDateTimeNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([$this->createMockDateTimeNormalizer()], ['xml' => new XmlEncoder()]);
         $encoder->setSerializer($serializer);
 
         return $encoder;
@@ -699,7 +699,7 @@ private function createMockDateTimeNormalizer()
         $mock
             ->expects($this->once())
             ->method('normalize')
-            ->with(new \DateTime($this->exampleDateTimeString), 'xml', array())
+            ->with(new \DateTime($this->exampleDateTimeString), 'xml', [])
             ->willReturn($this->exampleDateTimeString);
 
         $mock
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/YamlEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/YamlEncoderTest.php
index d08272df5048..9936ecb8bc8c 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/YamlEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/YamlEncoderTest.php
@@ -27,7 +27,7 @@ public function testEncode()
         $encoder = new YamlEncoder();
 
         $this->assertEquals('foo', $encoder->encode('foo', 'yaml'));
-        $this->assertEquals('{ foo: 1 }', $encoder->encode(array('foo' => 1), 'yaml'));
+        $this->assertEquals('{ foo: 1 }', $encoder->encode(['foo' => 1], 'yaml'));
     }
 
     public function testSupportsEncoding()
@@ -43,7 +43,7 @@ public function testDecode()
         $encoder = new YamlEncoder();
 
         $this->assertEquals('foo', $encoder->decode('foo', 'yaml'));
-        $this->assertEquals(array('foo' => 1), $encoder->decode('{ foo: 1 }', 'yaml'));
+        $this->assertEquals(['foo' => 1], $encoder->decode('{ foo: 1 }', 'yaml'));
     }
 
     public function testSupportsDecoding()
@@ -56,16 +56,16 @@ public function testSupportsDecoding()
 
     public function testContext()
     {
-        $encoder = new YamlEncoder(new Dumper(), new Parser(), array('yaml_inline' => 1, 'yaml_indent' => 4, 'yaml_flags' => Yaml::DUMP_OBJECT | Yaml::PARSE_OBJECT));
+        $encoder = new YamlEncoder(new Dumper(), new Parser(), ['yaml_inline' => 1, 'yaml_indent' => 4, 'yaml_flags' => Yaml::DUMP_OBJECT | Yaml::PARSE_OBJECT]);
 
         $obj = new \stdClass();
         $obj->bar = 2;
 
         $legacyTag = "    foo: !php/object:O:8:\"stdClass\":1:{s:3:\"bar\";i:2;}\n";
         $spacedTag = "    foo: !php/object 'O:8:\"stdClass\":1:{s:3:\"bar\";i:2;}'\n";
-        $this->assertThat($encoder->encode(array('foo' => $obj), 'yaml'), $this->logicalOr($this->equalTo($legacyTag), $this->equalTo($spacedTag)));
-        $this->assertEquals('  { foo: null }', $encoder->encode(array('foo' => $obj), 'yaml', array('yaml_inline' => 0, 'yaml_indent' => 2, 'yaml_flags' => 0)));
-        $this->assertEquals(array('foo' => $obj), $encoder->decode("foo: !php/object 'O:8:\"stdClass\":1:{s:3:\"bar\";i:2;}'", 'yaml'));
-        $this->assertEquals(array('foo' => null), $encoder->decode("foo: !php/object 'O:8:\"stdClass\":1:{s:3:\"bar\";i:2;}'", 'yaml', array('yaml_flags' => 0)));
+        $this->assertThat($encoder->encode(['foo' => $obj], 'yaml'), $this->logicalOr($this->equalTo($legacyTag), $this->equalTo($spacedTag)));
+        $this->assertEquals('  { foo: null }', $encoder->encode(['foo' => $obj], 'yaml', ['yaml_inline' => 0, 'yaml_indent' => 2, 'yaml_flags' => 0]));
+        $this->assertEquals(['foo' => $obj], $encoder->decode("foo: !php/object 'O:8:\"stdClass\":1:{s:3:\"bar\";i:2;}'", 'yaml'));
+        $this->assertEquals(['foo' => null], $encoder->decode("foo: !php/object 'O:8:\"stdClass\":1:{s:3:\"bar\";i:2;}'", 'yaml', ['yaml_flags' => 0]));
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/AbstractNormalizerDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/AbstractNormalizerDummy.php
index 27b2f24f53fb..f576a241a487 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/AbstractNormalizerDummy.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/AbstractNormalizerDummy.php
@@ -31,7 +31,7 @@ public function getAllowedAttributes($classOrObject, array $context, $attributes
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
     }
 
@@ -46,7 +46,7 @@ public function supportsNormalization($data, $format = null)
     /**
      * {@inheritdoc}
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/DenormalizableDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/DenormalizableDummy.php
index d78f34a3cde7..ded194ba80fc 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/DenormalizableDummy.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/DenormalizableDummy.php
@@ -16,7 +16,7 @@
 
 class DenormalizableDummy implements DenormalizableInterface
 {
-    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = array())
+    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = [])
     {
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/Dummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/Dummy.php
index 3f4582559e7a..bb734ddc7e09 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/Dummy.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/Dummy.php
@@ -23,17 +23,17 @@ class Dummy implements NormalizableInterface, DenormalizableInterface
     public $baz;
     public $qux;
 
-    public function normalize(NormalizerInterface $normalizer, $format = null, array $context = array())
+    public function normalize(NormalizerInterface $normalizer, $format = null, array $context = [])
     {
-        return array(
+        return [
             'foo' => $this->foo,
             'bar' => $this->bar,
             'baz' => $this->baz,
             'qux' => $this->qux,
-        );
+        ];
     }
 
-    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = array())
+    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = [])
     {
         $this->foo = $data['foo'];
         $this->bar = $data['bar'];
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/JsonSerializableDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/JsonSerializableDummy.php
index 6d89890b8f4c..958200fdc74e 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/JsonSerializableDummy.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/JsonSerializableDummy.php
@@ -15,11 +15,11 @@ class JsonSerializableDummy implements \JsonSerializable
 {
     public function jsonSerialize()
     {
-        return array(
+        return [
             'foo' => 'a',
             'bar' => 'b',
             'baz' => 'c',
             'qux' => $this,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/NormalizableTraversableDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/NormalizableTraversableDummy.php
index a786fa1cc192..2ce2adffd798 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/NormalizableTraversableDummy.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/NormalizableTraversableDummy.php
@@ -18,19 +18,19 @@
 
 class NormalizableTraversableDummy extends TraversableDummy implements NormalizableInterface, DenormalizableInterface
 {
-    public function normalize(NormalizerInterface $normalizer, $format = null, array $context = array())
+    public function normalize(NormalizerInterface $normalizer, $format = null, array $context = [])
     {
-        return array(
+        return [
             'foo' => 'normalizedFoo',
             'bar' => 'normalizedBar',
-        );
+        ];
     }
 
-    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = array())
+    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = [])
     {
-        return array(
+        return [
             'foo' => 'denormalizedFoo',
             'bar' => 'denormalizedBar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/ScalarDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/ScalarDummy.php
index fb45e12c650a..438a902e23e3 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/ScalarDummy.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/ScalarDummy.php
@@ -21,12 +21,12 @@ class ScalarDummy implements NormalizableInterface, DenormalizableInterface
     public $foo;
     public $xmlFoo;
 
-    public function normalize(NormalizerInterface $normalizer, $format = null, array $context = array())
+    public function normalize(NormalizerInterface $normalizer, $format = null, array $context = [])
     {
         return 'xml' === $format ? $this->xmlFoo : $this->foo;
     }
 
-    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = array())
+    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = [])
     {
         if ('xml' === $format) {
             $this->xmlFoo = $data;
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/AttributeMetadataTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/AttributeMetadataTest.php
index 16ebcb1aac8d..622a35ee6306 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/AttributeMetadataTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/AttributeMetadataTest.php
@@ -38,7 +38,7 @@ public function testGroups()
         $attributeMetadata->addGroup('a');
         $attributeMetadata->addGroup('b');
 
-        $this->assertEquals(array('a', 'b'), $attributeMetadata->getGroups());
+        $this->assertEquals(['a', 'b'], $attributeMetadata->getGroups());
     }
 
     public function testMaxDepth()
@@ -62,7 +62,7 @@ public function testMerge()
 
         $attributeMetadata1->merge($attributeMetadata2);
 
-        $this->assertEquals(array('a', 'b', 'c'), $attributeMetadata1->getGroups());
+        $this->assertEquals(['a', 'b', 'c'], $attributeMetadata1->getGroups());
         $this->assertEquals(2, $attributeMetadata1->getMaxDepth());
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/ClassMetadataTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/ClassMetadataTest.php
index f2db1c51f6fc..f62967935dc5 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/ClassMetadataTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/ClassMetadataTest.php
@@ -38,7 +38,7 @@ public function testAttributeMetadata()
         $classMetadata->addAttributeMetadata($a1);
         $classMetadata->addAttributeMetadata($a2);
 
-        $this->assertEquals(array('a1' => $a1, 'a2' => $a2), $classMetadata->getAttributesMetadata());
+        $this->assertEquals(['a1' => $a1, 'a2' => $a2], $classMetadata->getAttributesMetadata());
     }
 
     public function testMerge()
@@ -48,11 +48,11 @@ public function testMerge()
 
         $ac1 = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\AttributeMetadataInterface')->getMock();
         $ac1->method('getName')->willReturn('a1');
-        $ac1->method('getGroups')->willReturn(array('a', 'b'));
+        $ac1->method('getGroups')->willReturn(['a', 'b']);
 
         $ac2 = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\AttributeMetadataInterface')->getMock();
         $ac2->method('getName')->willReturn('a1');
-        $ac2->method('getGroups')->willReturn(array('b', 'c'));
+        $ac2->method('getGroups')->willReturn(['b', 'c']);
 
         $classMetadata1->addAttributeMetadata($ac1);
         $classMetadata2->addAttributeMetadata($ac2);
@@ -61,7 +61,7 @@ public function testMerge()
 
         $ac1->method('getGroups')->willReturn('a', 'b', 'c');
 
-        $this->assertEquals(array('a1' => $ac1), $classMetadata2->getAttributesMetadata());
+        $this->assertEquals(['a1' => $ac1], $classMetadata2->getAttributesMetadata());
     }
 
     public function testSerialize()
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/Factory/ClassMetadataFactoryTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/Factory/ClassMetadataFactoryTest.php
index 903cc04d1f49..3d2aaa4c7ccd 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/Factory/ClassMetadataFactoryTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/Factory/ClassMetadataFactoryTest.php
@@ -25,7 +25,7 @@ class ClassMetadataFactoryTest extends TestCase
 {
     public function testInterface()
     {
-        $classMetadata = new ClassMetadataFactory(new LoaderChain(array()));
+        $classMetadata = new ClassMetadataFactory(new LoaderChain([]));
         $this->assertInstanceOf('Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface', $classMetadata);
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/NameConverter/CamelCaseToSnakeCaseNameConverterTest.php b/src/Symfony/Component/Serializer/Tests/NameConverter/CamelCaseToSnakeCaseNameConverterTest.php
index b0dec5183976..4847004c972c 100644
--- a/src/Symfony/Component/Serializer/Tests/NameConverter/CamelCaseToSnakeCaseNameConverterTest.php
+++ b/src/Symfony/Component/Serializer/Tests/NameConverter/CamelCaseToSnakeCaseNameConverterTest.php
@@ -45,13 +45,13 @@ public function testDenormalize($underscored, $camelCased, $useLowerCamelCase)
 
     public function attributeProvider()
     {
-        return array(
-            array('coop_tilleuls', 'coopTilleuls', true),
-            array('_kevin_dunglas', '_kevinDunglas', true),
-            array('this_is_a_test', 'thisIsATest', true),
-            array('coop_tilleuls', 'CoopTilleuls', false),
-            array('_kevin_dunglas', '_kevinDunglas', false),
-            array('this_is_a_test', 'ThisIsATest', false),
-        );
+        return [
+            ['coop_tilleuls', 'coopTilleuls', true],
+            ['_kevin_dunglas', '_kevinDunglas', true],
+            ['this_is_a_test', 'thisIsATest', true],
+            ['coop_tilleuls', 'CoopTilleuls', false],
+            ['_kevin_dunglas', '_kevinDunglas', false],
+            ['this_is_a_test', 'ThisIsATest', false],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractNormalizerTest.php
index 28edc0587271..890cb2701930 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractNormalizerTest.php
@@ -33,8 +33,8 @@ class AbstractNormalizerTest extends TestCase
 
     protected function setUp()
     {
-        $loader = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\Loader\LoaderChain')->setConstructorArgs(array(array()))->getMock();
-        $this->classMetadata = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactory')->setConstructorArgs(array($loader))->getMock();
+        $loader = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\Loader\LoaderChain')->setConstructorArgs([[]])->getMock();
+        $this->classMetadata = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactory')->setConstructorArgs([$loader])->getMock();
         $this->normalizer = new AbstractNormalizerDummy($this->classMetadata);
     }
 
@@ -60,11 +60,11 @@ public function testGetAllowedAttributesAsString()
 
         $this->classMetadata->method('getMetadataFor')->willReturn($classMetadata);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => array('test')), true);
-        $this->assertEquals(array('a2', 'a4'), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => ['test']], true);
+        $this->assertEquals(['a2', 'a4'], $result);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => array('other')), true);
-        $this->assertEquals(array('a3', 'a4'), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => ['other']], true);
+        $this->assertEquals(['a3', 'a4'], $result);
     }
 
     public function testGetAllowedAttributesAsObjects()
@@ -89,21 +89,21 @@ public function testGetAllowedAttributesAsObjects()
 
         $this->classMetadata->method('getMetadataFor')->willReturn($classMetadata);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => array('test')), false);
-        $this->assertEquals(array($a2, $a4), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => ['test']], false);
+        $this->assertEquals([$a2, $a4], $result);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => array('other')), false);
-        $this->assertEquals(array($a3, $a4), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => ['other']], false);
+        $this->assertEquals([$a3, $a4], $result);
     }
 
     public function testObjectToPopulateWithProxy()
     {
         $proxyDummy = new ProxyDummy();
 
-        $context = array(AbstractNormalizer::OBJECT_TO_POPULATE => $proxyDummy);
+        $context = [AbstractNormalizer::OBJECT_TO_POPULATE => $proxyDummy];
 
         $normalizer = new ObjectNormalizer();
-        $normalizer->denormalize(array('foo' => 'bar'), 'Symfony\Component\Serializer\Tests\Fixtures\ToBeProxyfiedDummy', null, $context);
+        $normalizer->denormalize(['foo' => 'bar'], 'Symfony\Component\Serializer\Tests\Fixtures\ToBeProxyfiedDummy', null, $context);
 
         $this->assertSame('bar', $proxyDummy->getFoo());
     }
@@ -111,7 +111,7 @@ public function testObjectToPopulateWithProxy()
     public function testObjectWithStaticConstructor()
     {
         $normalizer = new StaticConstructorNormalizer();
-        $dummy = $normalizer->denormalize(array('foo' => 'baz'), StaticConstructorDummy::class);
+        $dummy = $normalizer->denormalize(['foo' => 'baz'], StaticConstructorDummy::class);
 
         $this->assertInstanceOf(StaticConstructorDummy::class, $dummy);
         $this->assertEquals('baz', $dummy->quz);
@@ -124,7 +124,7 @@ public function testObjectWithStaticConstructor()
     public function testObjectWithNullableConstructorArgument()
     {
         $normalizer = new ObjectNormalizer();
-        $dummy = $normalizer->denormalize(array('foo' => null), NullableConstructorArgumentDummy::class);
+        $dummy = $normalizer->denormalize(['foo' => null], NullableConstructorArgumentDummy::class);
 
         $this->assertNull($dummy->getFoo());
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
index 73ccf6891dec..6155cc3ea0f3 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
@@ -29,7 +29,7 @@ class AbstractObjectNormalizerTest extends TestCase
     public function testDenormalize()
     {
         $normalizer = new AbstractObjectNormalizerDummy();
-        $normalizedData = $normalizer->denormalize(array('foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'), __NAMESPACE__.'\Dummy');
+        $normalizedData = $normalizer->denormalize(['foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'], __NAMESPACE__.'\Dummy');
 
         $this->assertSame('foo', $normalizedData->foo);
         $this->assertNull($normalizedData->bar);
@@ -38,13 +38,13 @@ public function testDenormalize()
 
     public function testInstantiateObjectDenormalizer()
     {
-        $data = array('foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz');
+        $data = ['foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'];
         $class = __NAMESPACE__.'\Dummy';
-        $context = array();
+        $context = [];
 
         $normalizer = new AbstractObjectNormalizerDummy();
 
-        $this->assertInstanceOf(__NAMESPACE__.'\Dummy', $normalizer->instantiateObject($data, $class, $context, new \ReflectionClass($class), array()));
+        $this->assertInstanceOf(__NAMESPACE__.'\Dummy', $normalizer->instantiateObject($data, $class, $context, new \ReflectionClass($class), []));
     }
 
     /**
@@ -56,10 +56,10 @@ public function testDenormalizeWithExtraAttributes()
         $factory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $normalizer = new AbstractObjectNormalizerDummy($factory);
         $normalizer->denormalize(
-            array('fooFoo' => 'foo', 'fooBar' => 'bar'),
+            ['fooFoo' => 'foo', 'fooBar' => 'bar'],
             __NAMESPACE__.'\Dummy',
             'any',
-            array('allow_extra_attributes' => false)
+            ['allow_extra_attributes' => false]
         );
     }
 
@@ -71,10 +71,10 @@ public function testDenormalizeWithExtraAttributesAndNoGroupsWithMetadataFactory
     {
         $normalizer = new AbstractObjectNormalizerWithMetadata();
         $normalizer->denormalize(
-            array('fooFoo' => 'foo', 'fooBar' => 'bar', 'bar' => 'bar'),
+            ['fooFoo' => 'foo', 'fooBar' => 'bar', 'bar' => 'bar'],
             Dummy::class,
             'any',
-            array('allow_extra_attributes' => false)
+            ['allow_extra_attributes' => false]
         );
     }
 
@@ -83,11 +83,11 @@ public function testDenormalizeCollectionDecodedFromXmlWithOneChild()
         $denormalizer = $this->getDenormalizerForDummyCollection();
 
         $dummyCollection = $denormalizer->denormalize(
-            array(
-                'children' => array(
+            [
+                'children' => [
                     'bar' => 'first',
-                ),
-            ),
+                ],
+            ],
             DummyCollection::class,
             'xml'
         );
@@ -103,12 +103,12 @@ public function testDenormalizeCollectionDecodedFromXmlWithTwoChildren()
         $denormalizer = $this->getDenormalizerForDummyCollection();
 
         $dummyCollection = $denormalizer->denormalize(
-            array(
-                'children' => array(
-                    array('bar' => 'first'),
-                    array('bar' => 'second'),
-                ),
-            ),
+            [
+                'children' => [
+                    ['bar' => 'first'],
+                    ['bar' => 'second'],
+                ],
+            ],
             DummyCollection::class,
             'xml'
         );
@@ -125,7 +125,7 @@ private function getDenormalizerForDummyCollection()
         $extractor = $this->getMockBuilder(PhpDocExtractor::class)->getMock();
         $extractor->method('getTypes')
             ->will($this->onConsecutiveCalls(
-                array(
+                [
                     new Type(
                         'array',
                         false,
@@ -134,13 +134,13 @@ private function getDenormalizerForDummyCollection()
                         new Type('int'),
                         new Type('object', false, DummyChild::class)
                     ),
-                ),
+                ],
                 null
             ));
 
         $denormalizer = new AbstractObjectNormalizerCollectionDummy(null, null, $extractor);
         $arrayDenormalizer = new ArrayDenormalizerDummy();
-        $serializer = new SerializerCollectionDummy(array($arrayDenormalizer, $denormalizer));
+        $serializer = new SerializerCollectionDummy([$arrayDenormalizer, $denormalizer]);
         $arrayDenormalizer->setSerializer($serializer);
         $denormalizer->setSerializer($serializer);
 
@@ -157,30 +157,30 @@ public function testExtraAttributesException()
     {
         $normalizer = new ObjectNormalizer();
 
-        $normalizer->denormalize(array(), \stdClass::class, 'xml', array(
+        $normalizer->denormalize([], \stdClass::class, 'xml', [
             'allow_extra_attributes' => false,
-        ));
+        ]);
     }
 }
 
 class AbstractObjectNormalizerDummy extends AbstractObjectNormalizer
 {
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
     }
 
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
     }
 
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         $object->$attribute = $value;
     }
 
-    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = array())
+    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = [])
     {
-        return \in_array($attribute, array('foo', 'baz'));
+        return \in_array($attribute, ['foo', 'baz']);
     }
 
     public function instantiateObject(array &$data, $class, array &$context, \ReflectionClass $reflectionClass, $allowedAttributes, $format = null)
@@ -203,15 +203,15 @@ public function __construct()
         parent::__construct(new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader())));
     }
 
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
     }
 
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
     }
 
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         $object->$attribute = $value;
     }
@@ -240,15 +240,15 @@ public function __construct($normalizers)
         $this->normalizers = $normalizers;
     }
 
-    public function serialize($data, $format, array $context = array())
+    public function serialize($data, $format, array $context = [])
     {
     }
 
-    public function deserialize($data, $type, $format, array $context = array())
+    public function deserialize($data, $type, $format, array $context = [])
     {
     }
 
-    public function denormalize($data, $type, $format = null, array $context = array())
+    public function denormalize($data, $type, $format = null, array $context = [])
     {
         foreach ($this->normalizers as $normalizer) {
             if ($normalizer instanceof DenormalizerInterface && $normalizer->supportsDenormalization($data, $type, $format, $context)) {
@@ -265,20 +265,20 @@ public function supportsDenormalization($data, $type, $format = null)
 
 class AbstractObjectNormalizerCollectionDummy extends AbstractObjectNormalizer
 {
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
     }
 
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
     }
 
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         $object->$attribute = $value;
     }
 
-    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = array())
+    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = [])
     {
         return true;
     }
@@ -288,11 +288,11 @@ public function instantiateObject(array &$data, $class, array &$context, \Reflec
         return parent::instantiateObject($data, $class, $context, $reflectionClass, $allowedAttributes, $format);
     }
 
-    public function serialize($data, $format, array $context = array())
+    public function serialize($data, $format, array $context = [])
     {
     }
 
-    public function deserialize($data, $type, $format, array $context = array())
+    public function deserialize($data, $type, $format, array $context = [])
     {
     }
 }
@@ -309,7 +309,7 @@ class ArrayDenormalizerDummy implements DenormalizerInterface, SerializerAwareIn
      *
      * @throws NotNormalizableValueException
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         $serializer = $this->serializer;
         $class = substr($class, 0, -2);
@@ -324,7 +324,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
     /**
      * {@inheritdoc}
      */
-    public function supportsDenormalization($data, $type, $format = null, array $context = array())
+    public function supportsDenormalization($data, $type, $format = null, array $context = [])
     {
         return '[]' === substr($type, -2)
             && $this->serializer->supportsDenormalization($data, substr($type, 0, -2), $format, $context);
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ArrayDenormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ArrayDenormalizerTest.php
index e5876a04e1e5..fd456cb9dd4d 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ArrayDenormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ArrayDenormalizerTest.php
@@ -38,27 +38,27 @@ public function testDenormalize()
     {
         $this->serializer->expects($this->at(0))
             ->method('denormalize')
-            ->with(array('foo' => 'one', 'bar' => 'two'))
+            ->with(['foo' => 'one', 'bar' => 'two'])
             ->will($this->returnValue(new ArrayDummy('one', 'two')));
 
         $this->serializer->expects($this->at(1))
             ->method('denormalize')
-            ->with(array('foo' => 'three', 'bar' => 'four'))
+            ->with(['foo' => 'three', 'bar' => 'four'])
             ->will($this->returnValue(new ArrayDummy('three', 'four')));
 
         $result = $this->denormalizer->denormalize(
-            array(
-                array('foo' => 'one', 'bar' => 'two'),
-                array('foo' => 'three', 'bar' => 'four'),
-            ),
+            [
+                ['foo' => 'one', 'bar' => 'two'],
+                ['foo' => 'three', 'bar' => 'four'],
+            ],
             __NAMESPACE__.'\ArrayDummy[]'
         );
 
         $this->assertEquals(
-            array(
+            [
                 new ArrayDummy('one', 'two'),
                 new ArrayDummy('three', 'four'),
-            ),
+            ],
             $result
         );
     }
@@ -72,10 +72,10 @@ public function testSupportsValidArray()
 
         $this->assertTrue(
             $this->denormalizer->supportsDenormalization(
-                array(
-                    array('foo' => 'one', 'bar' => 'two'),
-                    array('foo' => 'three', 'bar' => 'four'),
-                ),
+                [
+                    ['foo' => 'one', 'bar' => 'two'],
+                    ['foo' => 'three', 'bar' => 'four'],
+                ],
                 __NAMESPACE__.'\ArrayDummy[]'
             )
         );
@@ -89,10 +89,10 @@ public function testSupportsInvalidArray()
 
         $this->assertFalse(
             $this->denormalizer->supportsDenormalization(
-                array(
-                    array('foo' => 'one', 'bar' => 'two'),
-                    array('foo' => 'three', 'bar' => 'four'),
-                ),
+                [
+                    ['foo' => 'one', 'bar' => 'two'],
+                    ['foo' => 'three', 'bar' => 'four'],
+                ],
                 __NAMESPACE__.'\InvalidClass[]'
             )
         );
@@ -102,7 +102,7 @@ public function testSupportsNoArray()
     {
         $this->assertFalse(
             $this->denormalizer->supportsDenormalization(
-                array('foo' => 'one', 'bar' => 'two'),
+                ['foo' => 'one', 'bar' => 'two'],
                 __NAMESPACE__.'\ArrayDummy'
             )
         );
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/CustomNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/CustomNormalizerTest.php
index 55378c773a55..28fb73ece5bc 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/CustomNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/CustomNormalizerTest.php
@@ -59,9 +59,9 @@ public function testDeserialize()
     public function testDenormalizeWithObjectToPopulateUsesProvidedObject()
     {
         $expected = new ScalarDummy();
-        $obj = $this->normalizer->denormalize('foo', ScalarDummy::class, 'json', array(
+        $obj = $this->normalizer->denormalize('foo', ScalarDummy::class, 'json', [
             'object_to_populate' => $expected,
-        ));
+        ]);
 
         $this->assertSame($expected, $obj);
         $this->assertEquals('foo', $obj->foo);
@@ -76,8 +76,8 @@ public function testSupportsNormalization()
 
     public function testSupportsDenormalization()
     {
-        $this->assertTrue($this->normalizer->supportsDenormalization(array(), 'Symfony\Component\Serializer\Tests\Fixtures\ScalarDummy'));
-        $this->assertFalse($this->normalizer->supportsDenormalization(array(), 'stdClass'));
-        $this->assertTrue($this->normalizer->supportsDenormalization(array(), 'Symfony\Component\Serializer\Tests\Fixtures\DenormalizableDummy'));
+        $this->assertTrue($this->normalizer->supportsDenormalization([], 'Symfony\Component\Serializer\Tests\Fixtures\ScalarDummy'));
+        $this->assertFalse($this->normalizer->supportsDenormalization([], 'stdClass'));
+        $this->assertTrue($this->normalizer->supportsDenormalization([], 'Symfony\Component\Serializer\Tests\Fixtures\DenormalizableDummy'));
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/DataUriNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/DataUriNormalizerTest.php
index d3ad2af83635..e1f714b55c1e 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/DataUriNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/DataUriNormalizerTest.php
@@ -131,19 +131,19 @@ public function testInvalidData($uri)
 
     public function invalidUriProvider()
     {
-        return array(
-            array('dataxbase64'),
-            array('data:HelloWorld'),
-            array('data:text/html;charset=,%3Ch1%3EHello!%3C%2Fh1%3E'),
-            array('data:text/html;charset,%3Ch1%3EHello!%3C%2Fh1%3E'),
-            array('data:base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'),
-            array(''),
-            array('http://wikipedia.org'),
-            array('base64'),
-            array('iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'),
-            array(' data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'),
-            array('   data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'),
-        );
+        return [
+            ['dataxbase64'],
+            ['data:HelloWorld'],
+            ['data:text/html;charset=,%3Ch1%3EHello!%3C%2Fh1%3E'],
+            ['data:text/html;charset,%3Ch1%3EHello!%3C%2Fh1%3E'],
+            ['data:base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'],
+            [''],
+            ['http://wikipedia.org'],
+            ['base64'],
+            ['iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'],
+            [' data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'],
+            ['   data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'],
+        ];
     }
 
     /**
@@ -156,22 +156,22 @@ public function testValidData($uri)
 
     public function validUriProvider()
     {
-        $data = array(
-            array('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'),
-            array('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'),
-            array('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC   '),
-            array('data:,Hello%2C%20World!'),
-            array('data:text/html,%3Ch1%3EHello%2C%20World!%3C%2Fh1%3E'),
-            array('data:,A%20brief%20note'),
-            array('data:text/html;charset=US-ASCII,%3Ch1%3EHello!%3C%2Fh1%3E'),
-            array('data:application/ld+json;base64,eyJAaWQiOiAiL2ZvbyJ9'),
-            array('data:application/vnd.ms-word.document.macroenabled.12;base64,UEsDBBQABgAIAAAAIQBnzQ+udAEAADoFAAATAAgCW0NvbnRlbnRfVHlwZXNdLnhtbCCiBAIooAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAC0lMtOwzAQRfdI/EPkLUrcskAINe0CyhIqUT7AtSepIX7Idl9/zzhpI1TRBFG6iZTM3HvPOJmMJltVJWtwXhqdk2E2IAloboTUZU7e58/pPUl8YFqwymjIyQ48mYyvr0bznQWfoFr7nCxDsA+Uer4ExXxmLGisFMYpFvDWldQy/slKoLeDwR3lRgfQIQ3Rg4xHT1CwVRWS6RYfNyQoJ8lj0xejcsKsrSRnAcs0VumPOgeV7xCutTiiS/dkGSrrHr+U1t+cTviwUB4lSBVHqwuoecXjdFJAMmMuvDCFDXRjnKDC8JVCUdY9XGRUPo2SrJUoxp2ZaraoAKtM6gPhyTQfdhX4X2QdnYcpCsmhDY5e1hkO3uM3oaqs8e2PhxBQcAmAvXMvwgYWbxej+GbeC1Jg7jy+uv/HaK17IQLuJjTX4dkctU1XJHbOnLEed939YezDUkZ1igNbcEF2f3VtIlqfPR/EfRcgfsim9Z9v/AUAAP//AwBQSwMEFAAGAAgAAAAhAMfCJ7z/AAAA3wIAAAsACAJfcmVscy8ucmVscyCiBAIooAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACsks1KAzEQgO+C7xDm3s22iog024sIvYmsDzAm093o5odkqu3bG0XUhWUR7HH+Pr5JZr05uEG8Uso2eAXLqgZBXgdjfafgsb1bXIPIjN7gEDwpOFKGTXN+tn6gAbkM5d7GLArFZwU9c7yRMuueHOYqRPKlsgvJIZcwdTKifsGO5Kqur2T6zYBmxBRboyBtzQWI9hjpf2zpiNEgo9Qh0SKmMp3Yll1Ei6kjVmCCvi/p/NlRFTLIaaHLvwuF3c5qug1678jzlBcdmLwhM6+EMc4ZLU9pNO74kXkLyUjzlZ6zWZ32w7jfuyePdph4l+9a9Ryp+xCSo7Ns3gEAAP//AwBQSwMEFAAGAAgAAAAhABOqPof2AAAAMQMAABwACAF3b3JkL19yZWxzL2RvY3VtZW50LnhtbC5yZWxzIKIEASigAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAArJLLasMwEEX3hf6DmH0tO31QQuRsSiHb1v0ARR4/qCwJzfThv69oSOvQYLrw8l4x955Bs9l+Dla8Y6TeOwVFloNAZ3zdu1bBS/V4dQ+CWLtaW+9QwYgE2/LyYvOEVnMaoq4PJFKKIwUdc1hLSabDQVPmA7r00vg4aE4ytjJo86pblKs8v5NxmgHlSabY1Qrirr4GUY0B/5Ptm6Y3+ODN24COz1TID9w/I3NajlKsji2ygomZpUSQ50FulgRpvONK7y3+YvxYcxC3S0Jwmp0AfMuDWcwxFEsyEI8WJ59x0HP1q0Xr/1zD0TkiyJNDL78AAAD//wMAUEsDBBQABgAIAAAAIQAz6gHKYAIAAAIHAAARAAAAd29yZC9kb2N1bWVudC54bWykld1u2jAUx+8n7R2Q70sSCpRGQKVBh9A0qRrb9WQcJ7GIfSzbQLs32nPsxXacL7JNQ7QgFPt8+Of/sWNn+vAsi96BGytAzUjUD0mPKwaJUNmMfPv68WZCetZRldACFJ+RF27Jw/z9u+kxToDtJVeuhwhl46NmM5I7p+MgsCznktq+FMyAhdT1GcgA0lQwHhzBJMEgjMKypw0wbi3Ot6DqQC2pcRIuo0nKmu4gDCdoC9Uy/lUEmisMpmAkdWiaDEeY3V7fIFNTJ7aiEO7Fs8Yt5jAje6PimnHT6vBjYhQQH2TRJMO53Epo3TQjzCUiqyHLeslLeYHhBQoGZXOhT+v2VhoG8wZytuBOsUcdDa/b9KWhR2xOwEvkJ9UgWVTKzxOj8IId8Yh2xCUS/pyzUdJ9+Y5vW5rO4kaj1wEGfwN0dt3mrAzs9YkmrqOt1a5l+avkFax6k7ul2evEbHKq8QRKFq8zBYZuC1SEW9bDVe/515rM8YrbQvLiW43uYaypoetkRsLB8hb/Q1J6HX923ntX/9Ab43WafMHEcHQXLUaD1rXkKd0Xzkduw9FitChnMf7h5p9+/TwINQ183z9L9xZg5y+ojaPGIUb4+T1PUYmKv6/gA2U7EnRzH1XSZgYlSvuw5cw9mf+r22Dcex+j0eQ+LJXpbPMDo3gioug+LOfNsT+eDEuyT/hMPdIBHtxoGFXViyx3J3MLzoE82QVPO9Gc04TjFXgXTryZAriOme1dadbTMSgseq2mjFc5pRu/RCsjfNGFUPxJOIYqb8dN9VXhZbfa0OD08Zr/BgAA//8DAFBLAwQUAAYACAAAACEAJyDgAjMGAACMGgAAFQAAAHdvcmQvdGhlbWUvdGhlbWUxLnhtbOxZTYvbRhi+F/ofhO6OZVvyxxJvsGU7abObhOwmJcexNJYmO9KYmdHumhAoybFQKE1LDw301kJpG0igl/TUn7JtSptC/kJHI8uesccsaTawhNhgzcfzvvPM+848I1kXLx0n2DqElCGSdu3aBce2YBqQEKVR1761P6q0bYtxkIYAkxR27Rlk9qXtDz+4CLZ4DBNoCfuUbYGuHXM+3apWWSCaAbtApjAVfRNCE8BFlUbVkIIj4TfB1brjNKsJQKltpSARbvfj338Qzq5PJiiA9nbpfYjFT8pZ3hBgupf7hnOTfkYhyCQ2PKjlFzZjPqbWIcBdWwwUkqN9eMxtCwPGRUfXduTHrm5frC6MMN9gq9iN5GduNzcID+rSjkbjhaHrem6zt/AvAZiv44atYXPYXPiTABAEYqYFFxXr9Tv9gTfHKqCiaPA9aA0aNQ2v+G+s4Xte/tXwElQU3TX8aOQvY6iAiqJniEmr7rsaXoKKYnMN33J6A7el4SUoxig9WEM7XrPhl7NdQCYEXzHCO547atXn8CWqqqyuwj7lm9ZaAu4SOhIAmVzAUWrx2RROQCBwPsBoTJG1g6JYLLwpSAkTzU7dGTkN8Zt/XVmSEQFbECjWRVPA1ppyPhYLKJryrv2x8GorkFfPf3r1/Kl18uDZyYNfTx4+PHnwi8HqCkgj1erl91/8+/hT65+n37189JUZz1T8nz9/9sdvX5qBXAW++PrJX8+evPjm879/fGSA9ygYq/B9lEBmXYNH1k2SiIkZBoBj+noW+zFAqkUvjRhIQW5jQA95rKGvzQAGBlwf6hG8TYVMmICXs7sa4b2YZhwZgFfjRAPuEoL7hBrndDUfS41ClkbmwWmm4m4CcGga21/J7zCbivWOTC79GGo0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'],
+            ['data:a!b#c&d-e^f_g+h.i/a!b#c&d-e^f_g+h.i;base64,foobar'],
+        ];
 
         if (!\defined('HHVM_VERSION')) {
             // See https://github.com/facebook/hhvm/issues/6354
-            $data[] = array('data:text/plain;charset=utf-8;base64,SGVsbG8gV29ybGQh');
+            $data[] = ['data:text/plain;charset=utf-8;base64,SGVsbG8gV29ybGQh'];
         }
 
         return $data;
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/DateIntervalNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/DateIntervalNormalizerTest.php
index f6dc6c2475e5..b092c779a8cf 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/DateIntervalNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/DateIntervalNormalizerTest.php
@@ -22,14 +22,14 @@ protected function setUp()
 
     public function dataProviderISO()
     {
-        $data = array(
-            array('P%YY%MM%DDT%HH%IM%SS', 'P00Y00M00DT00H00M00S', 'PT0S'),
-            array('P%yY%mM%dDT%hH%iM%sS', 'P0Y0M0DT0H0M0S', 'PT0S'),
-            array('P%yY%mM%dDT%hH%iM%sS', 'P10Y2M3DT16H5M6S', 'P10Y2M3DT16H5M6S'),
-            array('P%yY%mM%dDT%hH%iM', 'P10Y2M3DT16H5M', 'P10Y2M3DT16H5M'),
-            array('P%yY%mM%dDT%hH', 'P10Y2M3DT16H', 'P10Y2M3DT16H'),
-            array('P%yY%mM%dD', 'P10Y2M3D', 'P10Y2M3DT0H'),
-        );
+        $data = [
+            ['P%YY%MM%DDT%HH%IM%SS', 'P00Y00M00DT00H00M00S', 'PT0S'],
+            ['P%yY%mM%dDT%hH%iM%sS', 'P0Y0M0DT0H0M0S', 'PT0S'],
+            ['P%yY%mM%dDT%hH%iM%sS', 'P10Y2M3DT16H5M6S', 'P10Y2M3DT16H5M6S'],
+            ['P%yY%mM%dDT%hH%iM', 'P10Y2M3DT16H5M', 'P10Y2M3DT16H5M'],
+            ['P%yY%mM%dDT%hH', 'P10Y2M3DT16H', 'P10Y2M3DT16H'],
+            ['P%yY%mM%dD', 'P10Y2M3D', 'P10Y2M3DT0H'],
+        ];
 
         return $data;
     }
@@ -50,7 +50,7 @@ public function testNormalize()
      */
     public function testNormalizeUsingFormatPassedInContext($format, $output, $input)
     {
-        $this->assertEquals($output, $this->normalizer->normalize(new \DateInterval($input), null, array(DateIntervalNormalizer::FORMAT_KEY => $format)));
+        $this->assertEquals($output, $this->normalizer->normalize(new \DateInterval($input), null, [DateIntervalNormalizer::FORMAT_KEY => $format]));
     }
 
     /**
@@ -86,7 +86,7 @@ public function testDenormalize()
      */
     public function testDenormalizeUsingFormatPassedInContext($format, $input, $output)
     {
-        $this->assertDateIntervalEquals(new \DateInterval($output), $this->normalizer->denormalize($input, \DateInterval::class, null, array(DateIntervalNormalizer::FORMAT_KEY => $format)));
+        $this->assertDateIntervalEquals(new \DateInterval($output), $this->normalizer->denormalize($input, \DateInterval::class, null, [DateIntervalNormalizer::FORMAT_KEY => $format]));
     }
 
     /**
@@ -127,7 +127,7 @@ public function testDenormalizeInvalidDataThrowsException()
      */
     public function testDenormalizeFormatMismatchThrowsException()
     {
-        $this->normalizer->denormalize('P00Y00M00DT00H00M00S', \DateInterval::class, null, array(DateIntervalNormalizer::FORMAT_KEY => 'P%yY%mM%dD'));
+        $this->normalizer->denormalize('P00Y00M00DT00H00M00S', \DateInterval::class, null, [DateIntervalNormalizer::FORMAT_KEY => 'P%yY%mM%dD']);
     }
 
     private function assertDateIntervalEquals(\DateInterval $expected, \DateInterval $actual)
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/DateTimeNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/DateTimeNormalizerTest.php
index e86fbdc48df0..5ff41c80337a 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/DateTimeNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/DateTimeNormalizerTest.php
@@ -44,7 +44,7 @@ public function testNormalize()
 
     public function testNormalizeUsingFormatPassedInContext()
     {
-        $this->assertEquals('2016', $this->normalizer->normalize(new \DateTime('2016/01/01'), null, array(DateTimeNormalizer::FORMAT_KEY => 'Y')));
+        $this->assertEquals('2016', $this->normalizer->normalize(new \DateTime('2016/01/01'), null, [DateTimeNormalizer::FORMAT_KEY => 'Y']));
     }
 
     public function testNormalizeUsingFormatPassedInConstructor()
@@ -65,17 +65,17 @@ public function testNormalizeUsingTimeZonePassedInConstructor()
      */
     public function testNormalizeUsingTimeZonePassedInContext($expected, $input, $timezone)
     {
-        $this->assertSame($expected, $this->normalizer->normalize($input, null, array(
+        $this->assertSame($expected, $this->normalizer->normalize($input, null, [
             DateTimeNormalizer::TIMEZONE_KEY => $timezone,
-        )));
+        ]));
     }
 
     public function normalizeUsingTimeZonePassedInContextProvider()
     {
-        yield array('2016-12-01T00:00:00+00:00', new \DateTime('2016/12/01', new \DateTimeZone('UTC')), null);
-        yield array('2016-12-01T00:00:00+09:00', new \DateTime('2016/12/01', new \DateTimeZone('Japan')), new \DateTimeZone('Japan'));
-        yield array('2016-12-01T09:00:00+09:00', new \DateTime('2016/12/01', new \DateTimeZone('UTC')), new \DateTimeZone('Japan'));
-        yield array('2016-12-01T09:00:00+09:00', new \DateTimeImmutable('2016/12/01', new \DateTimeZone('UTC')), new \DateTimeZone('Japan'));
+        yield ['2016-12-01T00:00:00+00:00', new \DateTime('2016/12/01', new \DateTimeZone('UTC')), null];
+        yield ['2016-12-01T00:00:00+09:00', new \DateTime('2016/12/01', new \DateTimeZone('Japan')), new \DateTimeZone('Japan')];
+        yield ['2016-12-01T09:00:00+09:00', new \DateTime('2016/12/01', new \DateTimeZone('UTC')), new \DateTimeZone('Japan')];
+        yield ['2016-12-01T09:00:00+09:00', new \DateTimeImmutable('2016/12/01', new \DateTimeZone('UTC')), new \DateTimeZone('Japan')];
     }
 
     /**
@@ -88,17 +88,17 @@ public function testNormalizeUsingTimeZonePassedInContextAndFormattedWithMicrose
             $this->normalizer->normalize(
                 $input,
                 null,
-                array(
+                [
                     DateTimeNormalizer::TIMEZONE_KEY => $timezone,
                     DateTimeNormalizer::FORMAT_KEY => $expectedFormat,
-                )
+                ]
             )
         );
     }
 
     public function normalizeUsingTimeZonePassedInContextAndExpectedFormatWithMicrosecondsProvider()
     {
-        yield array(
+        yield [
             '2018-12-01T18:03:06.067634',
             'Y-m-d\TH:i:s.u',
             \DateTime::createFromFormat(
@@ -107,9 +107,9 @@ public function normalizeUsingTimeZonePassedInContextAndExpectedFormatWithMicros
                 new \DateTimeZone('UTC')
             ),
             null,
-        );
+        ];
 
-        yield array(
+        yield [
             '2018-12-01T18:03:06.067634',
             'Y-m-d\TH:i:s.u',
             \DateTime::createFromFormat(
@@ -118,9 +118,9 @@ public function normalizeUsingTimeZonePassedInContextAndExpectedFormatWithMicros
                 new \DateTimeZone('UTC')
             ),
             new \DateTimeZone('UTC'),
-        );
+        ];
 
-        yield array(
+        yield [
             '2018-12-01T19:03:06.067634+01:00',
             'Y-m-d\TH:i:s.uP',
             \DateTimeImmutable::createFromFormat(
@@ -129,9 +129,9 @@ public function normalizeUsingTimeZonePassedInContextAndExpectedFormatWithMicros
                 new \DateTimeZone('UTC')
             ),
             new \DateTimeZone('Europe/Rome'),
-        );
+        ];
 
-        yield array(
+        yield [
             '2018-12-01T20:03:06.067634+02:00',
             'Y-m-d\TH:i:s.uP',
             \DateTime::createFromFormat(
@@ -140,9 +140,9 @@ public function normalizeUsingTimeZonePassedInContextAndExpectedFormatWithMicros
                 new \DateTimeZone('UTC')
             ),
             new \DateTimeZone('Europe/Kiev'),
-        );
+        ];
 
-        yield array(
+        yield [
             '2018-12-01T19:03:06.067634',
             'Y-m-d\TH:i:s.u',
             \DateTime::createFromFormat(
@@ -151,7 +151,7 @@ public function normalizeUsingTimeZonePassedInContextAndExpectedFormatWithMicros
                 new \DateTimeZone('UTC')
             ),
             new \DateTimeZone('Europe/Berlin'),
-        );
+        ];
     }
 
     /**
@@ -184,16 +184,16 @@ public function testDenormalizeUsingTimezonePassedInConstructor()
         $expected = new \DateTime('2016/12/01 17:35:00', $timezone);
         $normalizer = new DateTimeNormalizer(null, $timezone);
 
-        $this->assertEquals($expected, $normalizer->denormalize('2016.12.01 17:35:00', \DateTime::class, null, array(
+        $this->assertEquals($expected, $normalizer->denormalize('2016.12.01 17:35:00', \DateTime::class, null, [
             DateTimeNormalizer::FORMAT_KEY => 'Y.m.d H:i:s',
-        )));
+        ]));
     }
 
     public function testDenormalizeUsingFormatPassedInContext()
     {
-        $this->assertEquals(new \DateTimeImmutable('2016/01/01'), $this->normalizer->denormalize('2016.01.01', \DateTimeInterface::class, null, array(DateTimeNormalizer::FORMAT_KEY => 'Y.m.d|')));
-        $this->assertEquals(new \DateTimeImmutable('2016/01/01'), $this->normalizer->denormalize('2016.01.01', \DateTimeImmutable::class, null, array(DateTimeNormalizer::FORMAT_KEY => 'Y.m.d|')));
-        $this->assertEquals(new \DateTime('2016/01/01'), $this->normalizer->denormalize('2016.01.01', \DateTime::class, null, array(DateTimeNormalizer::FORMAT_KEY => 'Y.m.d|')));
+        $this->assertEquals(new \DateTimeImmutable('2016/01/01'), $this->normalizer->denormalize('2016.01.01', \DateTimeInterface::class, null, [DateTimeNormalizer::FORMAT_KEY => 'Y.m.d|']));
+        $this->assertEquals(new \DateTimeImmutable('2016/01/01'), $this->normalizer->denormalize('2016.01.01', \DateTimeImmutable::class, null, [DateTimeNormalizer::FORMAT_KEY => 'Y.m.d|']));
+        $this->assertEquals(new \DateTime('2016/01/01'), $this->normalizer->denormalize('2016.01.01', \DateTime::class, null, [DateTimeNormalizer::FORMAT_KEY => 'Y.m.d|']));
     }
 
     /**
@@ -201,38 +201,38 @@ public function testDenormalizeUsingFormatPassedInContext()
      */
     public function testDenormalizeUsingTimezonePassedInContext($input, $expected, $timezone, $format = null)
     {
-        $actual = $this->normalizer->denormalize($input, \DateTimeInterface::class, null, array(
+        $actual = $this->normalizer->denormalize($input, \DateTimeInterface::class, null, [
             DateTimeNormalizer::TIMEZONE_KEY => $timezone,
             DateTimeNormalizer::FORMAT_KEY => $format,
-        ));
+        ]);
 
         $this->assertEquals($expected, $actual);
     }
 
     public function denormalizeUsingTimezonePassedInContextProvider()
     {
-        yield 'with timezone' => array(
+        yield 'with timezone' => [
             '2016/12/01 17:35:00',
             new \DateTimeImmutable('2016/12/01 17:35:00', new \DateTimeZone('Japan')),
             new \DateTimeZone('Japan'),
-        );
-        yield 'with timezone as string' => array(
+        ];
+        yield 'with timezone as string' => [
             '2016/12/01 17:35:00',
             new \DateTimeImmutable('2016/12/01 17:35:00', new \DateTimeZone('Japan')),
             'Japan',
-        );
-        yield 'with format without timezone information' => array(
+        ];
+        yield 'with format without timezone information' => [
             '2016.12.01 17:35:00',
             new \DateTimeImmutable('2016/12/01 17:35:00', new \DateTimeZone('Japan')),
             new \DateTimeZone('Japan'),
             'Y.m.d H:i:s',
-        );
-        yield 'ignored with format with timezone information' => array(
+        ];
+        yield 'ignored with format with timezone information' => [
             '2016-12-01T17:35:00Z',
             new \DateTimeImmutable('2016/12/01 17:35:00', new \DateTimeZone('UTC')),
             'Europe/Paris',
             \DateTime::RFC3339,
-        );
+        ];
     }
 
     /**
@@ -266,6 +266,6 @@ public function testDenormalizeEmptyStringThrowsException()
      */
     public function testDenormalizeFormatMismatchThrowsException()
     {
-        $this->normalizer->denormalize('2016-01-01T00:00:00+00:00', \DateTimeInterface::class, null, array(DateTimeNormalizer::FORMAT_KEY => 'Y-m-d|'));
+        $this->normalizer->denormalize('2016-01-01T00:00:00+00:00', \DateTimeInterface::class, null, [DateTimeNormalizer::FORMAT_KEY => 'Y-m-d|']);
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
index a087d3de093d..fe56c38ae43f 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
@@ -67,14 +67,14 @@ public function testNormalize()
         ;
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'bar' => 'bar',
                 'baz' => true,
                 'fooBar' => 'foobar',
                 'camelCase' => 'camelcase',
                 'object' => 'string_object',
-            ),
+            ],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -82,7 +82,7 @@ public function testNormalize()
     public function testDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\GetSetDummy',
             'any'
         );
@@ -110,7 +110,7 @@ public function testDenormalizeNull()
     public function testConstructorDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\GetConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertEquals('bar', $obj->getBar());
@@ -120,7 +120,7 @@ public function testConstructorDenormalize()
     public function testConstructorDenormalizeWithNullArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => null, 'baz' => true),
+            ['foo' => 'foo', 'bar' => null, 'baz' => true],
             __NAMESPACE__.'\GetConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertNull($obj->getBar());
@@ -130,19 +130,19 @@ public function testConstructorDenormalizeWithNullArgument()
     public function testConstructorDenormalizeWithMissingOptionalArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'test', 'baz' => array(1, 2, 3)),
+            ['foo' => 'test', 'baz' => [1, 2, 3]],
             __NAMESPACE__.'\GetConstructorOptionalArgsDummy', 'any');
         $this->assertEquals('test', $obj->getFoo());
-        $this->assertEquals(array(), $obj->getBar());
-        $this->assertEquals(array(1, 2, 3), $obj->getBaz());
+        $this->assertEquals([], $obj->getBar());
+        $this->assertEquals([1, 2, 3], $obj->getBaz());
     }
 
     public function testConstructorDenormalizeWithOptionalDefaultArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('bar' => 'test'),
+            ['bar' => 'test'],
             __NAMESPACE__.'\GetConstructorArgsWithDefaultValueDummy', 'any');
-        $this->assertEquals(array(), $obj->getFoo());
+        $this->assertEquals([], $obj->getFoo());
         $this->assertEquals('test', $obj->getBar());
     }
 
@@ -152,9 +152,9 @@ public function testConstructorDenormalizeWithOptionalDefaultArgument()
     public function testConstructorDenormalizeWithVariadicArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => array(1, 2, 3)),
+            ['foo' => [1, 2, 3]],
             'Symfony\Component\Serializer\Tests\Fixtures\VariadicConstructorArgsDummy', 'any');
-        $this->assertEquals(array(1, 2, 3), $obj->getFoo());
+        $this->assertEquals([1, 2, 3], $obj->getFoo());
     }
 
     /**
@@ -163,9 +163,9 @@ public function testConstructorDenormalizeWithVariadicArgument()
     public function testConstructorDenormalizeWithMissingVariadicArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array(),
+            [],
             'Symfony\Component\Serializer\Tests\Fixtures\VariadicConstructorArgsDummy', 'any');
-        $this->assertEquals(array(), $obj->getFoo());
+        $this->assertEquals([], $obj->getFoo());
     }
 
     public function testConstructorWithObjectDenormalize()
@@ -182,7 +182,7 @@ public function testConstructorWithObjectDenormalize()
 
     public function testConstructorWArgWithPrivateMutator()
     {
-        $obj = $this->normalizer->denormalize(array('foo' => 'bar'), __NAMESPACE__.'\ObjectConstructorArgsWithPrivateMutatorDummy', 'any');
+        $obj = $this->normalizer->denormalize(['foo' => 'bar'], __NAMESPACE__.'\ObjectConstructorArgsWithPrivateMutatorDummy', 'any');
         $this->assertEquals('bar', $obj->getFoo());
     }
 
@@ -200,18 +200,18 @@ public function testGroupsNormalize()
         $obj->setKevin('kevin');
         $obj->setCoopTilleuls('coopTilleuls');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'bar' => 'bar',
-        ), $this->normalizer->normalize($obj, null, array(GetSetMethodNormalizer::GROUPS => array('c'))));
+        ], $this->normalizer->normalize($obj, null, [GetSetMethodNormalizer::GROUPS => ['c']]));
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'symfony' => 'symfony',
             'foo' => 'foo',
             'fooBar' => 'fooBar',
             'bar' => 'bar',
             'kevin' => 'kevin',
             'coopTilleuls' => 'coopTilleuls',
-        ), $this->normalizer->normalize($obj, null, array(GetSetMethodNormalizer::GROUPS => array('a', 'c'))));
+        ], $this->normalizer->normalize($obj, null, [GetSetMethodNormalizer::GROUPS => ['a', 'c']]));
     }
 
     public function testGroupsDenormalize()
@@ -223,13 +223,13 @@ public function testGroupsDenormalize()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $toNormalize = array('foo' => 'foo', 'bar' => 'bar');
+        $toNormalize = ['foo' => 'foo', 'bar' => 'bar'];
 
         $normalized = $this->normalizer->denormalize(
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(GetSetMethodNormalizer::GROUPS => array('a'))
+            [GetSetMethodNormalizer::GROUPS => ['a']]
         );
         $this->assertEquals($obj, $normalized);
 
@@ -239,7 +239,7 @@ public function testGroupsDenormalize()
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(GetSetMethodNormalizer::GROUPS => array('a', 'b'))
+            [GetSetMethodNormalizer::GROUPS => ['a', 'b']]
         );
         $this->assertEquals($obj, $normalized);
     }
@@ -256,12 +256,12 @@ public function testGroupsNormalizeWithNameConverter()
         $obj->setCoopTilleuls('les-tilleuls.coop');
 
         $this->assertEquals(
-            array(
+            [
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
-            ),
-            $this->normalizer->normalize($obj, null, array(GetSetMethodNormalizer::GROUPS => array('name_converter')))
+            ],
+            $this->normalizer->normalize($obj, null, [GetSetMethodNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -277,12 +277,12 @@ public function testGroupsDenormalizeWithNameConverter()
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array(
+            $this->normalizer->denormalize([
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
                 'coop_tilleuls' => 'les-tilleuls.coop',
-            ), 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, array(GetSetMethodNormalizer::GROUPS => array('name_converter')))
+            ], 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, [GetSetMethodNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -307,7 +307,7 @@ public function testCallbacks($callbacks, $value, $result, $message)
      */
     public function testUncallableCallbacks()
     {
-        $this->normalizer->setCallbacks(array('bar' => null));
+        $this->normalizer->setCallbacks(['bar' => null]);
 
         $obj = new GetConstructorDummy('baz', 'quux', true);
 
@@ -316,7 +316,7 @@ public function testUncallableCallbacks()
 
     public function testIgnoredAttributes()
     {
-        $this->normalizer->setIgnoredAttributes(array('foo', 'bar', 'baz', 'camelCase', 'object'));
+        $this->normalizer->setIgnoredAttributes(['foo', 'bar', 'baz', 'camelCase', 'object']);
 
         $obj = new GetSetDummy();
         $obj->setFoo('foo');
@@ -324,45 +324,45 @@ public function testIgnoredAttributes()
         $obj->setBaz(true);
 
         $this->assertEquals(
-            array('fooBar' => 'foobar'),
+            ['fooBar' => 'foobar'],
             $this->normalizer->normalize($obj, 'any')
         );
     }
 
     public function provideCallbacks()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'bar' => function ($bar) {
                         return 'baz';
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => 'baz', 'baz' => true),
+                ['foo' => '', 'bar' => 'baz', 'baz' => true],
                 'Change a string',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => null, 'baz' => true),
+                ['foo' => '', 'bar' => null, 'baz' => true],
                 'Null an item',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return $bar->format('d-m-Y H:i:s');
                     },
-                ),
+                ],
                 new \DateTime('2011-09-10 06:30:00'),
-                array('foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true),
+                ['foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true],
                 'Format a date',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         $foos = '';
                         foreach ($bars as $bar) {
@@ -371,22 +371,22 @@ public function provideCallbacks()
 
                         return $foos;
                     },
-                ),
-                array(new GetConstructorDummy('baz', '', false), new GetConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 'bazquux', 'baz' => true),
+                ],
+                [new GetConstructorDummy('baz', '', false), new GetConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 'bazquux', 'baz' => true],
                 'Collect a property',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         return \count($bars);
                     },
-                ),
-                array(new GetConstructorDummy('baz', '', false), new GetConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 2, 'baz' => true),
+                ],
+                [new GetConstructorDummy('baz', '', false), new GetConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 2, 'baz' => true],
                 'Count a property',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -410,7 +410,7 @@ public function testUnableToNormalizeObjectAttribute()
      */
     public function testUnableToNormalizeCircularReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
         $this->normalizer->setCircularReferenceLimit(2);
 
@@ -421,22 +421,22 @@ public function testUnableToNormalizeCircularReference()
 
     public function testSiblingReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $siblingHolder = new SiblingHolder();
 
-        $expected = array(
-            'sibling0' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling1' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling2' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-        );
+        $expected = [
+            'sibling0' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling1' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling2' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+        ];
         $this->assertEquals($expected, $this->normalizer->normalize($siblingHolder));
     }
 
     public function testCircularReferenceHandler()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
         $this->normalizer->setCircularReferenceHandler(function ($obj) {
             return \get_class($obj);
@@ -444,7 +444,7 @@ public function testCircularReferenceHandler()
 
         $obj = new CircularReferenceDummy();
 
-        $expected = array('me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy');
+        $expected = ['me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy'];
         $this->assertEquals($expected, $this->normalizer->normalize($obj));
     }
 
@@ -454,10 +454,10 @@ public function testObjectToPopulate()
         $dummy->setFoo('foo');
 
         $obj = $this->normalizer->denormalize(
-            array('bar' => 'bar'),
+            ['bar' => 'bar'],
             __NAMESPACE__.'\GetSetDummy',
             null,
-            array(GetSetMethodNormalizer::OBJECT_TO_POPULATE => $dummy)
+            [GetSetMethodNormalizer::OBJECT_TO_POPULATE => $dummy]
         );
 
         $this->assertEquals($dummy, $obj);
@@ -469,13 +469,13 @@ public function testDenormalizeNonExistingAttribute()
     {
         $this->assertEquals(
             new GetSetDummy(),
-            $this->normalizer->denormalize(array('non_existing' => true), __NAMESPACE__.'\GetSetDummy')
+            $this->normalizer->denormalize(['non_existing' => true], __NAMESPACE__.'\GetSetDummy')
         );
     }
 
     public function testDeno
10000
rmalizeShouldNotSetStaticAttribute()
     {
-        $obj = $this->normalizer->denormalize(array('staticObject' => true), __NAMESPACE__.'\GetSetDummy');
+        $obj = $this->normalizer->denormalize(['staticObject' => true], __NAMESPACE__.'\GetSetDummy');
 
         $this->assertEquals(new GetSetDummy(), $obj);
         $this->assertNull(GetSetDummy::getStaticObject());
@@ -493,13 +493,13 @@ public function testNoStaticGetSetSupport()
 
     public function testPrivateSetter()
     {
-        $obj = $this->normalizer->denormalize(array('foo' => 'foobar'), __NAMESPACE__.'\ObjectWithPrivateSetterDummy');
+        $obj = $this->normalizer->denormalize(['foo' => 'foobar'], __NAMESPACE__.'\ObjectWithPrivateSetterDummy');
         $this->assertEquals('bar', $obj->getFoo());
     }
 
     public function testHasGetterDenormalize()
     {
-        $obj = $this->normalizer->denormalize(array('foo' => true), ObjectWithHasGetterDummy::class);
+        $obj = $this->normalizer->denormalize(['foo' => true], ObjectWithHasGetterDummy::class);
         $this->assertTrue($obj->hasFoo());
     }
 
@@ -509,7 +509,7 @@ public function testHasGetterNormalize()
         $obj->setFoo(true);
 
         $this->assertEquals(
-            array('foo' => true),
+            ['foo' => true],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -518,7 +518,7 @@ public function testMaxDepth()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new GetSetMethodNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $level1 = new MaxDepthDummy();
@@ -536,20 +536,20 @@ public function testMaxDepth()
         $level4->bar = 'level4';
         $level3->child = $level4;
 
-        $result = $serializer->normalize($level1, null, array(GetSetMethodNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $serializer->normalize($level1, null, [GetSetMethodNormalizer::ENABLE_MAX_DEPTH => true]);
 
-        $expected = array(
+        $expected = [
             'bar' => 'level1',
-            'child' => array(
+            'child' => [
                     'bar' => 'level2',
-                    'child' => array(
+                    'child' => [
                             'bar' => 'level3',
-                            'child' => array(
+                            'child' => [
                                     'child' => null,
-                                ),
-                        ),
-                ),
-            );
+                                ],
+                        ],
+                ],
+            ];
 
         $this->assertEquals($expected, $result);
     }
@@ -684,7 +684,7 @@ class GetConstructorOptionalArgsDummy
     private $bar;
     private $baz;
 
-    public function __construct($foo, $bar = array(), $baz = array())
+    public function __construct($foo, $bar = [], $baz = [])
     {
         $this->foo = $foo;
         $this->bar = $bar;
@@ -717,7 +717,7 @@ class GetConstructorArgsWithDefaultValueDummy
     protected $foo;
     protected $bar;
 
-    public function __construct($foo = array(), $bar)
+    public function __construct($foo = [], $bar)
     {
         $this->foo = $foo;
         $this->bar = $bar;
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/JsonSerializableNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/JsonSerializableNormalizerTest.php
index 065d92b99f05..c6b167cbbe13 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/JsonSerializableNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/JsonSerializableNormalizerTest.php
@@ -51,7 +51,7 @@ public function testNormalize()
             ->expects($this->once())
             ->method('normalize')
             ->will($this->returnCallback(function ($data) {
-                $this->assertArraySubset(array('foo' => 'a', 'bar' => 'b', 'baz' => 'c'), $data);
+                $this->assertArraySubset(['foo' => 'a', 'bar' => 'b', 'baz' => 'c'], $data);
 
                 return 'string_object';
             }))
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
index 0a855d22be72..4068479c8700 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
@@ -69,14 +69,14 @@ public function testNormalize()
         ;
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'bar' => 'bar',
                 'baz' => true,
                 'fooBar' => 'foobar',
                 'camelCase' => 'camelcase',
                 'object' => 'string_object',
-            ),
+            ],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -84,7 +84,7 @@ public function testNormalize()
     public function testDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\ObjectDummy',
             'any'
         );
@@ -112,7 +112,7 @@ public function testDenormalizeNull()
     public function testConstructorDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\ObjectConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertEquals('bar', $obj->bar);
@@ -122,7 +122,7 @@ public function testConstructorDenormalize()
     public function testConstructorDenormalizeWithNullArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => null, 'baz' => true),
+            ['foo' => 'foo', 'bar' => null, 'baz' => true],
             __NAMESPACE__.'\ObjectConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertNull($obj->bar);
@@ -132,19 +132,19 @@ public function testConstructorDenormalizeWithNullArgument()
     public function testConstructorDenormalizeWithMissingOptionalArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'test', 'baz' => array(1, 2, 3)),
+            ['foo' => 'test', 'baz' => [1, 2, 3]],
             __NAMESPACE__.'\ObjectConstructorOptionalArgsDummy', 'any');
         $this->assertEquals('test', $obj->getFoo());
-        $this->assertEquals(array(), $obj->bar);
-        $this->assertEquals(array(1, 2, 3), $obj->getBaz());
+        $this->assertEquals([], $obj->bar);
+        $this->assertEquals([1, 2, 3], $obj->getBaz());
     }
 
     public function testConstructorDenormalizeWithOptionalDefaultArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('bar' => 'test'),
+            ['bar' => 'test'],
             __NAMESPACE__.'\ObjectConstructorArgsWithDefaultValueDummy', 'any');
-        $this->assertEquals(array(), $obj->getFoo());
+        $this->assertEquals([], $obj->getFoo());
         $this->assertEquals('test', $obj->getBar());
     }
 
@@ -162,16 +162,16 @@ public function testConstructorWithObjectDenormalize()
 
     public function testConstructorWithObjectTypeHintDenormalize()
     {
-        $data = array(
+        $data = [
             'id' => 10,
-            'inner' => array(
+            'inner' => [
                 'foo' => 'oof',
                 'bar' => 'rab',
-            ),
-        );
+            ],
+        ];
 
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
         $normalizer->setSerializer($serializer);
 
         $obj = $normalizer->denormalize($data, DummyWithConstructorObject::class);
@@ -188,16 +188,16 @@ public function testConstructorWithObjectTypeHintDenormalize()
      */
     public function testConstructorWithUnknownObjectTypeHintDenormalize()
     {
-        $data = array(
+        $data = [
             'id' => 10,
-            'unknown' => array(
+            'unknown' => [
                 'foo' => 'oof',
                 'bar' => 'rab',
-            ),
-        );
+            ],
+        ];
 
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
         $normalizer->setSerializer($serializer);
 
         $normalizer->denormalize($data, DummyWithConstructorInexistingObject::class);
@@ -217,18 +217,18 @@ public function testGroupsNormalize()
         $obj->setKevin('kevin');
         $obj->setCoopTilleuls('coopTilleuls');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'bar' => 'bar',
-        ), $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('c'))));
+        ], $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['c']]));
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'symfony' => 'symfony',
             'foo' => 'foo',
             'fooBar' => 'fooBar',
             'bar' => 'bar',
             'kevin' => 'kevin',
             'coopTilleuls' => 'coopTilleuls',
-        ), $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('a', 'c'))));
+        ], $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['a', 'c']]));
     }
 
     public function testGroupsDenormalize()
@@ -240,13 +240,13 @@ public function testGroupsDenormalize()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $toNormalize = array('foo' => 'foo', 'bar' => 'bar');
+        $toNormalize = ['foo' => 'foo', 'bar' => 'bar'];
 
         $normalized = $this->normalizer->denormalize(
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(ObjectNormalizer::GROUPS => array('a'))
+            [ObjectNormalizer::GROUPS => ['a']]
         );
         $this->assertEquals($obj, $normalized);
 
@@ -256,7 +256,7 @@ public function testGroupsDenormalize()
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(ObjectNormalizer::GROUPS => array('a', 'b'))
+            [ObjectNormalizer::GROUPS => ['a', 'b']]
         );
         $this->assertEquals($obj, $normalized);
     }
@@ -270,7 +270,7 @@ public function testNormalizeNoPropertyInGroup()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $this->assertEquals(array(), $this->normalizer->normalize($obj, null, array('groups' => array('notExist'))));
+        $this->assertEquals([], $this->normalizer->normalize($obj, null, ['groups' => ['notExist']]));
     }
 
     public function testGroupsNormalizeWithNameConverter()
@@ -285,12 +285,12 @@ public function testGroupsNormalizeWithNameConverter()
         $obj->setCoopTilleuls('les-tilleuls.coop');
 
         $this->assertEquals(
-            array(
+            [
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
-            ),
-            $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('name_converter')))
+            ],
+            $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -306,12 +306,12 @@ public function testGroupsDenormalizeWithNameConverter()
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array(
+            $this->normalizer->denormalize([
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
                 'coop_tilleuls' => 'les-tilleuls.coop',
-            ), 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, array(ObjectNormalizer::GROUPS => array('name_converter')))
+            ], 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, [ObjectNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -336,7 +336,7 @@ public function testCallbacks($callbacks, $value, $result, $message)
      */
     public function testUncallableCallbacks()
     {
-        $this->normalizer->setCallbacks(array('bar' => null));
+        $this->normalizer->setCallbacks(['bar' => null]);
 
         $obj = new ObjectConstructorDummy('baz', 'quux', true);
 
@@ -345,7 +345,7 @@ public function testUncallableCallbacks()
 
     public function testIgnoredAttributes()
     {
-        $this->normalizer->setIgnoredAttributes(array('foo', 'bar', 'baz', 'camelCase', 'object'));
+        $this->normalizer->setIgnoredAttributes(['foo', 'bar', 'baz', 'camelCase', 'object']);
 
         $obj = new ObjectDummy();
         $obj->setFoo('foo');
@@ -353,59 +353,59 @@ public function testIgnoredAttributes()
         $obj->setBaz(true);
 
         $this->assertEquals(
-            array('fooBar' => 'foobar'),
+            ['fooBar' => 'foobar'],
             $this->normalizer->normalize($obj, 'any')
         );
     }
 
     public function testIgnoredAttributesDenormalize()
     {
-        $this->normalizer->setIgnoredAttributes(array('fooBar', 'bar', 'baz'));
+        $this->normalizer->setIgnoredAttributes(['fooBar', 'bar', 'baz']);
 
         $obj = new ObjectDummy();
         $obj->setFoo('foo');
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array('fooBar' => 'fooBar', 'foo' => 'foo', 'baz' => 'baz'), __NAMESPACE__.'\ObjectDummy')
+            $this->normalizer->denormalize(['fooBar' => 'fooBar', 'foo' => 'foo', 'baz' => 'baz'], __NAMESPACE__.'\ObjectDummy')
         );
     }
 
     public function provideCallbacks()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'bar' => function ($bar) {
                         return 'baz';
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => 'baz', 'baz' => true),
+                ['foo' => '', 'bar' => 'baz', 'baz' => true],
                 'Change a string',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return;
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => null, 'baz' => true),
+                ['foo' => '', 'bar' => null, 'baz' => true],
                 'Null an item',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return $bar->format('d-m-Y H:i:s');
                     },
-                ),
+                ],
                 new \DateTime('2011-09-10 06:30:00'),
-                array('foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true),
+                ['foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true],
                 'Format a date',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         $foos = '';
                         foreach ($bars as $bar) {
@@ -414,22 +414,22 @@ public function provideCallbacks()
 
                         return $foos;
                     },
-                ),
-                array(new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 'bazquux', 'baz' => true),
+                ],
+                [new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 'bazquux', 'baz' => true],
                 'Collect a property',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         return \count($bars);
                     },
-                ),
-                array(new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 2, 'baz' => true),
+                ],
+                [new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 2, 'baz' => true],
                 'Count a property',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -453,7 +453,7 @@ public function testUnableToNormalizeObjectAttribute()
      */
     public function testUnableToNormalizeCircularReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
         $this->normalizer->setCircularReferenceLimit(2);
 
@@ -464,22 +464,22 @@ public function testUnableToNormalizeCircularReference()
 
     public function testSiblingReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $siblingHolder = new SiblingHolder();
 
-        $expected = array(
-            'sibling0' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling1' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling2' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-        );
+        $expected = [
+            'sibling0' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling1' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling2' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+        ];
         $this->assertEquals($expected, $this->normalizer->normalize($siblingHolder));
     }
 
     public function testCircularReferenceHandler()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
         $this->normalizer->setCircularReferenceHandler(function ($obj) {
             return \get_class($obj);
@@ -487,7 +487,7 @@ public function testCircularReferenceHandler()
 
         $obj = new CircularReferenceDummy();
 
-        $expected = array('me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy');
+        $expected = ['me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy'];
         $this->assertEquals($expected, $this->normalizer->normalize($obj));
     }
 
@@ -495,7 +495,7 @@ public function testDenormalizeNonExistingAttribute()
     {
         $this->assertEquals(
             new ObjectDummy(),
-            $this->normalizer->denormalize(array('non_existing' => true), __NAMESPACE__.'\ObjectDummy')
+            $this->normalizer->denormalize(['non_existing' => true], __NAMESPACE__.'\ObjectDummy')
         );
     }
 
@@ -506,35 +506,35 @@ public function testNoTraversableSupport()
 
     public function testNormalizeStatic()
     {
-        $this->assertEquals(array('foo' => 'K'), $this->normalizer->normalize(new ObjectWithStaticPropertiesAndMethods()));
+        $this->assertEquals(['foo' => 'K'], $this->normalizer->normalize(new ObjectWithStaticPropertiesAndMethods()));
     }
 
     public function testNormalizeUpperCaseAttributes()
     {
-        $this->assertEquals(array('Foo' => 'Foo', 'Bar' => 'BarBar'), $this->normalizer->normalize(new ObjectWithUpperCaseAttributeNames()));
+        $this->assertEquals(['Foo' => 'Foo', 'Bar' => 'BarBar'], $this->normalizer->normalize(new ObjectWithUpperCaseAttributeNames()));
     }
 
     public function testNormalizeNotSerializableContext()
     {
         $objectDummy = new ObjectDummy();
-        $expected = array(
+        $expected = [
             'foo' => null,
             'baz' => null,
             'fooBar' => '',
             'camelCase' => null,
             'object' => null,
             'bar' => null,
-        );
+        ];
 
-        $this->assertEquals($expected, $this->normalizer->normalize($objectDummy, null, array('not_serializable' => function () {
-        })));
+        $this->assertEquals($expected, $this->normalizer->normalize($objectDummy, null, ['not_serializable' => function () {
+        }]));
     }
 
     public function testMaxDepth()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new ObjectNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $level1 = new MaxDepthDummy();
@@ -548,20 +548,20 @@ public function testMaxDepth()
         $level3->foo = 'level3';
         $level2->child = $level3;
 
-        $result = $serializer->normalize($level1, null, array(ObjectNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $serializer->normalize($level1, null, [ObjectNormalizer::ENABLE_MAX_DEPTH => true]);
 
-        $expected = array(
+        $expected = [
             'bar' => null,
             'foo' => 'level1',
-            'child' => array(
+            'child' => [
                     'bar' => null,
                     'foo' => 'level2',
-                    'child' => array(
+                    'child' => [
                             'bar' => null,
                             'child' => null,
-                        ),
-                ),
-        );
+                        ],
+                ],
+        ];
 
         $this->assertEquals($expected, $result);
     }
@@ -571,20 +571,20 @@ public function testMaxDepth()
      */
     public function testThrowUnexpectedValueException()
     {
-        $this->normalizer->denormalize(array('foo' => 'bar'), ObjectTypeHinted::class);
+        $this->normalizer->denormalize(['foo' => 'bar'], ObjectTypeHinted::class);
     }
 
     public function testDenomalizeRecursive()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $obj = $serializer->denormalize(array(
-            'inner' => array('foo' => 'foo', 'bar' => 'bar'),
+        $obj = $serializer->denormalize([
+            'inner' => ['foo' => 'foo', 'bar' => 'bar'],
             'date' => '1988/01/21',
-            'inners' => array(array('foo' => 1), array('foo' => 2)),
-        ), ObjectOuter::class);
+            'inners' => [['foo' => 1], ['foo' => 2]],
+        ], ObjectOuter::class);
 
         $this->assertSame('foo', $obj->getInner()->foo);
         $this->assertSame('bar', $obj->getInner()->bar);
@@ -595,12 +595,12 @@ public function testDenomalizeRecursive()
 
     public function testAcceptJsonNumber()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $this->assertSame(10.0, $serializer->denormalize(array('number' => 10), JsonNumber::class, 'json')->number);
-        $this->assertSame(10.0, $serializer->denormalize(array('number' => 10), JsonNumber::class, 'jsonld')->number);
+        $this->assertSame(10.0, $serializer->denormalize(['number' => 10], JsonNumber::class, 'json')->number);
+        $this->assertSame(10.0, $serializer->denormalize(['number' => 10], JsonNumber::class, 'jsonld')->number);
     }
 
     /**
@@ -610,9 +610,9 @@ public function testAcceptJsonNumber()
     public function testRejectInvalidType()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
-        $serializer->denormalize(array('date' => 'foo'), ObjectOuter::class);
+        $serializer->denormalize(['date' => 'foo'], ObjectOuter::class);
     }
 
     /**
@@ -621,21 +621,21 @@ public function testRejectInvalidType()
      */
     public function testRejectInvalidKey()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $serializer->denormalize(array('inners' => array('a' => array('foo' => 1))), ObjectOuter::class);
+        $serializer->denormalize(['inners' => ['a' => ['foo' => 1]]], ObjectOuter::class);
     }
 
     public function testDoNotRejectInvalidTypeOnDisableTypeEnforcementContextOption()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array($normalizer));
-        $context = array(ObjectNormalizer::DISABLE_TYPE_ENFORCEMENT => true);
+        $serializer = new Serializer([$normalizer]);
+        $context = [ObjectNormalizer::DISABLE_TYPE_ENFORCEMENT => true];
 
-        $this->assertSame('foo', $serializer->denormalize(array('number' => 'foo'), JsonNumber::class, null, $context)->number);
+        $this->assertSame('foo', $serializer->denormalize(['number' => 'foo'], JsonNumber::class, null, $context)->number);
     }
 
     public function testExtractAttributesRespectsFormat()
@@ -646,7 +646,7 @@ public function testExtractAttributesRespectsFormat()
         $data->setFoo('bar');
         $data->bar = 'foo';
 
-        $this->assertSame(array('foo' => 'bar', 'bar' => 'foo'), $normalizer->normalize($data, 'foo_and_bar_included'));
+        $this->assertSame(['foo' => 'bar', 'bar' => 'foo'], $normalizer->normalize($data, 'foo_and_bar_included'));
     }
 
     public function testExtractAttributesRespectsContext()
@@ -657,13 +657,13 @@ public function testExtractAttributesRespectsContext()
         $data->setFoo('bar');
         $data->bar = 'foo';
 
-        $this->assertSame(array('foo' => 'bar', 'bar' => 'foo'), $normalizer->normalize($data, null, array('include_foo_and_bar' => true)));
+        $this->assertSame(['foo' => 'bar', 'bar' => 'foo'], $normalizer->normalize($data, null, ['include_foo_and_bar' => true]));
     }
 
     public function testAttributesContextNormalize()
     {
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->foo = 'innerFoo';
@@ -674,23 +674,23 @@ public function testAttributesContextNormalize()
         $objectDummy->setBaz(true);
         $objectDummy->setObject($objectInner);
 
-        $context = array('attributes' => array('foo', 'baz', 'object' => array('foo')));
+        $context = ['attributes' => ['foo', 'baz', 'object' => ['foo']]];
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'baz' => true,
-                'object' => array('foo' => 'innerFoo'),
-            ),
+                'object' => ['foo' => 'innerFoo'],
+            ],
             $serializer->normalize($objectDummy, null, $context)
         );
 
-        $context = array('attributes' => array('foo', 'baz', 'object'));
+        $context = ['attributes' => ['foo', 'baz', 'object']];
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'baz' => true,
-                'object' => array('foo' => 'innerFoo', 'bar' => 'innerBar'),
-            ),
+                'object' => ['foo' => 'innerFoo', 'bar' => 'innerBar'],
+            ],
             $serializer->normalize($objectDummy, null, $context)
         );
     }
@@ -698,7 +698,7 @@ public function testAttributesContextNormalize()
     public function testAttributesContextDenormalize()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->foo = 'innerFoo';
@@ -707,38 +707,38 @@ public function testAttributesContextDenormalize()
         $objectOuter->bar = 'bar';
         $objectOuter->setInner($objectInner);
 
-        $context = array('attributes' => array('bar', 'inner' => array('foo')));
+        $context = ['attributes' => ['bar', 'inner' => ['foo']]];
         $this->assertEquals($objectOuter, $serializer->denormalize(
-            array(
+            [
                 'foo' => 'foo',
                 'bar' => 'bar',
                 'date' => '2017-02-03',
-                'inner' => array('foo' => 'innerFoo', 'bar' => 'innerBar'),
-            ), ObjectOuter::class, null, $context));
+                'inner' => ['foo' => 'innerFoo', 'bar' => 'innerBar'],
+            ], ObjectOuter::class, null, $context));
     }
 
     public function testAttributesContextDenormalizeConstructor()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->bar = 'bar';
 
         $obj = new DummyWithConstructorObjectAndDefaultValue('a', $objectInner);
 
-        $context = array('attributes' => array('inner' => array('bar')));
-        $this->assertEquals($obj, $serializer->denormalize(array(
+        $context = ['attributes' => ['inner' => ['bar']]];
+        $this->assertEquals($obj, $serializer->denormalize([
             'foo' => 'b',
-            'inner' => array('foo' => 'foo', 'bar' => 'bar'),
-        ), DummyWithConstructorObjectAndDefaultValue::class, null, $context));
+            'inner' => ['foo' => 'foo', 'bar' => 'bar'],
+        ], DummyWithConstructorObjectAndDefaultValue::class, null, $context));
     }
 
     public function testNormalizeSameObjectWithDifferentAttributes()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new ObjectNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $dummy = new ObjectOuter();
@@ -750,19 +750,19 @@ public function testNormalizeSameObjectWithDifferentAttributes()
         $dummy->bar->foo = 'bar.foo';
         $dummy->bar->bar = 'bar.bar';
 
-        $this->assertEquals(array(
-            'foo' => array(
+        $this->assertEquals([
+            'foo' => [
                 'bar' => 'foo.bar',
-            ),
-            'bar' => array(
+            ],
+            'bar' => [
                 'foo' => 'bar.foo',
-            ),
-        ), $this->normalizer->normalize($dummy, 'json', array(
-            'attributes' => array(
-                'foo' => array('bar'),
-                'bar' => array('foo'),
-            ),
-        )));
+            ],
+        ], $this->normalizer->normalize($dummy, 'json', [
+            'attributes' => [
+                'foo' => ['bar'],
+                'bar' => ['foo'],
+            ],
+        ]));
     }
 }
 
@@ -864,7 +864,7 @@ class ObjectConstructorOptionalArgsDummy
     public $bar;
     private $baz;
 
-    public function __construct($foo, $bar = array(), $baz = array())
+    public function __construct($foo, $bar = [], $baz = [])
     {
         $this->foo = $foo;
         $this->bar = $bar;
@@ -892,7 +892,7 @@ class ObjectConstructorArgsWithDefaultValueDummy
     protected $foo;
     protected $bar;
 
-    public function __construct($foo = array(), $bar)
+    public function __construct($foo = [], $bar)
     {
         $this->foo = $foo;
         $this->bar = $bar;
@@ -983,13 +983,13 @@ class ObjectInner
 
 class FormatAndContextAwareNormalizer extends ObjectNormalizer
 {
-    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = array())
+    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = [])
     {
-        if (\in_array($attribute, array('foo', 'bar')) && 'foo_and_bar_included' === $format) {
+        if (\in_array($attribute, ['foo', 'bar']) && 'foo_and_bar_included' === $format) {
             return true;
         }
 
-        if (\in_array($attribute, array('foo', 'bar')) && isset($context['include_foo_and_bar']) && true === $context['include_foo_and_bar']) {
+        if (\in_array($attribute, ['foo', 'bar']) && isset($context['include_foo_and_bar']) && true === $context['include_foo_and_bar']) {
             return true;
         }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectToPopulateTraitTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectToPopulateTraitTest.php
index def71e5def5d..aa924be0dc92 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectToPopulateTraitTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectToPopulateTraitTest.php
@@ -12,25 +12,25 @@ class ObjectToPopulateTraitTest extends TestCase
 
     public function testExtractObjectToPopulateReturnsNullWhenKeyIsMissing()
     {
-        $object = $this->extractObjectToPopulate(ProxyDummy::class, array());
+        $object = $this->extractObjectToPopulate(ProxyDummy::class, []);
 
         $this->assertNull($object);
     }
 
     public function testExtractObjectToPopulateReturnsNullWhenNonObjectIsProvided()
     {
-        $object = $this->extractObjectToPopulate(ProxyDummy::class, array(
+        $object = $this->extractObjectToPopulate(ProxyDummy::class, [
             'object_to_populate' => 'not an object',
-        ));
+        ]);
 
         $this->assertNull($object);
     }
 
     public function testExtractObjectToPopulateReturnsNullWhenTheClassIsNotAnInstanceOfTheProvidedClass()
     {
-        $object = $this->extractObjectToPopulate(ProxyDummy::class, array(
+        $object = $this->extractObjectToPopulate(ProxyDummy::class, [
             'object_to_populate' => new \stdClass(),
-        ));
+        ]);
 
         $this->assertNull($object);
     }
@@ -38,9 +38,9 @@ public function testExtractObjectToPopulateReturnsNullWhenTheClassIsNotAnInstanc
     public function testExtractObjectToPopulateReturnsObjectWhenEverythingChecksOut()
     {
         $expected = new ProxyDummy();
-        $object = $this->extractObjectToPopulate(ProxyDummy::class, array(
+        $object = $this->extractObjectToPopulate(ProxyDummy::class, [
             'object_to_populate' => $expected,
-        ));
+        ]);
 
         $this->assertSame($expected, $object);
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
index 4cd20ab318f4..f8d1eb8db8d7 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
@@ -50,7 +50,7 @@ public function testNormalize()
         $obj->setBar('bar');
         $obj->setCamelCase('camelcase');
         $this->assertEquals(
-            array('foo' => 'foo', 'bar' => 'bar', 'camelCase' => 'camelcase'),
+            ['foo' => 'foo', 'bar' => 'bar', 'camelCase' => 'camelcase'],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -58,7 +58,7 @@ public function testNormalize()
     public function testDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar'),
+            ['foo' => 'foo', 'bar' => 'bar'],
             __NAMESPACE__.'\PropertyDummy',
             'any'
         );
@@ -75,7 +75,7 @@ public function testNormalizeWithParentClass()
         $group->setKevin('Kevin');
         $group->setCoopTilleuls('coop');
         $this->assertEquals(
-            array('foo' => 'foo', 'bar' => 'bar', 'kevin' => 'Kevin', 'coopTilleuls' => 'coop', 'fooBar' => null, 'symfony' => null, 'baz' => 'baz'),
+            ['foo' => 'foo', 'bar' => 'bar', 'kevin' => 'Kevin', 'coopTilleuls' => 'coop', 'fooBar' => null, 'symfony' => null, 'baz' => 'baz'],
             $this->normalizer->normalize($group, 'any')
         );
     }
@@ -83,7 +83,7 @@ public function testNormalizeWithParentClass()
     public function testDenormalizeWithParentClass()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'kevin' => 'Kevin', 'baz' => 'baz'),
+            ['foo' => 'foo', 'bar' => 'bar', 'kevin' => 'Kevin', 'baz' => 'baz'],
             GroupDummyChild::class,
             'any'
         );
@@ -97,7 +97,7 @@ public function testDenormalizeWithParentClass()
     public function testConstructorDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar'),
+            ['foo' => 'foo', 'bar' => 'bar'],
             __NAMESPACE__.'\PropertyConstructorDummy',
             'any'
         );
@@ -108,7 +108,7 @@ public function testConstructorDenormalize()
     public function testConstructorDenormalizeWithNullArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => null, 'bar' => 'bar'),
+            ['foo' => null, 'bar' => 'bar'],
             __NAMESPACE__.'\PropertyConstructorDummy', '
             any'
         );
@@ -137,7 +137,7 @@ public function testCallbacks($callbacks, $value, $result, $message)
      */
     public function testUncallableCallbacks()
     {
-        $this->normalizer->setCallbacks(array('bar' => null));
+        $this->normalizer->setCallbacks(['bar' => null]);
 
         $obj = new PropertyConstructorDummy('baz', 'quux');
 
@@ -146,14 +146,14 @@ public function testUncallableCallbacks()
 
     public function testIgnoredAttributes()
     {
-        $this->normalizer->setIgnoredAttributes(array('foo', 'bar', 'camelCase'));
+        $this->normalizer->setIgnoredAttributes(['foo', 'bar', 'camelCase']);
 
         $obj = new PropertyDummy();
         $obj->foo = 'foo';
         $obj->setBar('bar');
 
         $this->assertEquals(
-            array(),
+            [],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -172,19 +172,19 @@ public function testGroupsNormalize()
         $obj->setKevin('kevin');
         $obj->setCoopTilleuls('coopTilleuls');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'bar' => 'bar',
-        ), $this->normalizer->normalize($obj, null, array(PropertyNormalizer::GROUPS => array('c'))));
+        ], $this->normalizer->normalize($obj, null, [PropertyNormalizer::GROUPS => ['c']]));
 
         // The PropertyNormalizer is also able to hydrate properties from parent classes
-        $this->assertEquals(array(
+        $this->assertEquals([
             'symfony' => 'symfony',
             'foo' => 'foo',
             'fooBar' => 'fooBar',
             'bar' => 'bar',
             'kevin' => 'kevin',
             'coopTilleuls' => 'coopTilleuls',
-        ), $this->normalizer->normalize($obj, null, array(PropertyNormalizer::GROUPS => array('a', 'c'))));
+        ], $this->normalizer->normalize($obj, null, [PropertyNormalizer::GROUPS => ['a', 'c']]));
     }
 
     public function testGroupsDenormalize()
@@ -196,13 +196,13 @@ public function testGroupsDenormalize()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $toNormalize = array('foo' => 'foo', 'bar' => 'bar');
+        $toNormalize = ['foo' => 'foo', 'bar' => 'bar'];
 
         $normalized = $this->normalizer->denormalize(
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(PropertyNormalizer::GROUPS => array('a'))
+            [PropertyNormalizer::GROUPS => ['a']]
         );
         $this->assertEquals($obj, $normalized);
 
@@ -212,7 +212,7 @@ public function testGroupsDenormalize()
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(PropertyNormalizer::GROUPS => array('a', 'b'))
+            [PropertyNormalizer::GROUPS => ['a', 'b']]
         );
         $this->assertEquals($obj, $normalized);
     }
@@ -229,12 +229,12 @@ public function testGroupsNormalizeWithNameConverter()
         $obj->setCoopTilleuls('les-tilleuls.coop');
 
         $this->assertEquals(
-            array(
+            [
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
-            ),
-            $this->normalizer->normalize($obj, null, array(PropertyNormalizer::GROUPS => array('name_converter')))
+            ],
+            $this->normalizer->normalize($obj, null, [PropertyNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -250,50 +250,50 @@ public function testGroupsDenormalizeWithNameConverter()
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array(
+            $this->normalizer->denormalize([
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
                 'coop_tilleuls' => 'les-tilleuls.coop',
-            ), 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, array(PropertyNormalizer::GROUPS => array('name_converter')))
+            ], 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, [PropertyNormalizer::GROUPS => ['name_converter']])
         );
     }
 
     public function provideCallbacks()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'bar' => function ($bar) {
                         return 'baz';
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => 'baz'),
+                ['foo' => '', 'bar' => 'baz'],
                 'Change a string',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return;
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => null),
+                ['foo' => '', 'bar' => null],
                 'Null an item',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return $bar->format('d-m-Y H:i:s');
                     },
-                ),
+                ],
                 new \DateTime('2011-09-10 06:30:00'),
-                array('foo' => '', 'bar' => '10-09-2011 06:30:00'),
+                ['foo' => '', 'bar' => '10-09-2011 06:30:00'],
                 'Format a date',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         $foos = '';
                         foreach ($bars as $bar) {
@@ -302,22 +302,22 @@ public function provideCallbacks()
 
                         return $foos;
                     },
-                ),
-                array(new PropertyConstructorDummy('baz', ''), new PropertyConstructorDummy('quux', '')),
-                array('foo' => '', 'bar' => 'bazquux'),
+                ],
+                [new PropertyConstructorDummy('baz', ''), new PropertyConstructorDummy('quux', '')],
+                ['foo' => '', 'bar' => 'bazquux'],
                 'Collect a property',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         return \count($bars);
                     },
-                ),
-                array(new PropertyConstructorDummy('baz', ''), new PropertyConstructorDummy('quux', '')),
-                array('foo' => '', 'bar' => 2),
+                ],
+                [new PropertyConstructorDummy('baz', ''), new PropertyConstructorDummy('quux', '')],
+                ['foo' => '', 'bar' => 2],
                 'Count a property',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -325,7 +325,7 @@ public function provideCallbacks()
      */
     public function testUnableToNormalizeCircularReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
         $this->normalizer->setCircularReferenceLimit(2);
 
@@ -336,22 +336,22 @@ public function testUnableToNormalizeCircularReference()
 
     public function testSiblingReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $siblingHolder = new PropertySiblingHolder();
 
-        $expected = array(
-            'sibling0' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling1' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling2' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-        );
+        $expected = [
+            'sibling0' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling1' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling2' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+        ];
         $this->assertEquals($expected, $this->normalizer->normalize($siblingHolder));
     }
 
     public function testCircularReferenceHandler()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
         $this->normalizer->setCircularReferenceHandler(function ($obj) {
             return \get_class($obj);
@@ -359,7 +359,7 @@ public function testCircularReferenceHandler()
 
         $obj = new PropertyCircularReferenceDummy();
 
-        $expected = array('me' => 'Symfony\Component\Serializer\Tests\Fixtures\PropertyCircularReferenceDummy');
+        $expected = ['me' => 'Symfony\Component\Serializer\Tests\Fixtures\PropertyCircularReferenceDummy'];
         $this->assertEquals($expected, $this->normalizer->normalize($obj));
     }
 
@@ -367,13 +367,13 @@ public function testDenormalizeNonExistingAttribute()
     {
         $this->assertEquals(
             new PropertyDummy(),
-            $this->normalizer->denormalize(array('non_existing' => true), __NAMESPACE__.'\PropertyDummy')
+            $this->normalizer->denormalize(['non_existing' => true], __NAMESPACE__.'\PropertyDummy')
         );
     }
 
     public function testDenormalizeShouldIgnoreStaticProperty()
     {
-        $obj = $this->normalizer->denormalize(array('outOfScope' => true), __NAMESPACE__.'\PropertyDummy');
+        $obj = $this->normalizer->denormalize(['outOfScope' => true], __NAMESPACE__.'\PropertyDummy');
 
         $this->assertEquals(new PropertyDummy(), $obj);
         $this->assertEquals('out_of_scope', PropertyDummy::$outOfScope);
@@ -409,7 +409,7 @@ public function testMaxDepth()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new PropertyNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $level1 = new MaxDepthDummy();
@@ -423,20 +423,20 @@ public function testMaxDepth()
         $level3->foo = 'level3';
         $level2->child = $level3;
 
-        $result = $serializer->normalize($level1, null, array(PropertyNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $serializer->normalize($level1, null, [PropertyNormalizer::ENABLE_MAX_DEPTH => true]);
 
-        $expected = array(
+        $expected = [
             'foo' => 'level1',
-            'child' => array(
+            'child' => [
                     'foo' => 'level2',
-                    'child' => array(
+                    'child' => [
                             'child' => null,
                             'bar' => null,
-                        ),
+                        ],
                     'bar' => null,
-                ),
+                ],
             'bar' => null,
-        );
+        ];
 
         $this->assertEquals($expected, $result);
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/TestDenormalizer.php b/src/Symfony/Component/Serializer/Tests/Normalizer/TestDenormalizer.php
index 7525d5c92888..036d2bb84cd5 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/TestDenormalizer.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/TestDenormalizer.php
@@ -23,7 +23,7 @@ class TestDenormalizer implements DenormalizerInterface
     /**
      * {@inheritdoc}
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/TestNormalizer.php b/src/Symfony/Component/Serializer/Tests/Normalizer/TestNormalizer.php
index 4b29e8fa5d10..ea57d2dfff54 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/TestNormalizer.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/TestNormalizer.php
@@ -23,7 +23,7 @@ class TestNormalizer implements NormalizerInterface
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/SerializerTest.php b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
index e320bee3a6da..405317d5fb26 100644
--- a/src/Symfony/Component/Serializer/Tests/SerializerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
@@ -46,20 +46,20 @@ public function testInterface()
      */
     public function testNormalizeNoMatch()
     {
-        $serializer = new Serializer(array($this->getMockBuilder('Symfony\Component\Serializer\Normalizer\CustomNormalizer')->getMock()));
+        $serializer = new Serializer([$this->getMockBuilder('Symfony\Component\Serializer\Normalizer\CustomNormalizer')->getMock()]);
         $serializer->normalize(new \stdClass(), 'xml');
     }
 
     public function testNormalizeTraversable()
     {
-        $serializer = new Serializer(array(), array('json' => new JsonEncoder()));
+        $serializer = new Serializer([], ['json' => new JsonEncoder()]);
         $result = $serializer->serialize(new TraversableDummy(), 'json');
         $this->assertEquals('{"foo":"foo","bar":"bar"}', $result);
     }
 
     public function testNormalizeGivesPriorityToInterfaceOverTraversable()
     {
-        $serializer = new Serializer(array(new CustomNormalizer()), array('json' => new JsonEncoder()));
+        $serializer = new Serializer([new CustomNormalizer()], ['json' => new JsonEncoder()]);
         $result = $serializer->serialize(new NormalizableTraversableDummy(), 'json');
         $this->assertEquals('{"foo":"normalizedFoo","bar":"normalizedBar"}', $result);
     }
@@ -69,7 +69,7 @@ public function testNormalizeGivesPriorityToInterfaceOverTraversable()
      */
     public function testNormalizeOnDenormalizer()
     {
-        $serializer = new Serializer(array(new TestDenormalizer()), array());
+        $serializer = new Serializer([new TestDenormalizer()], []);
         $this->assertTrue($serializer->normalize(new \stdClass(), 'json'));
     }
 
@@ -78,7 +78,7 @@ public function testNormalizeOnDenormalizer()
      */
     public function testDenormalizeNoMatch()
     {
-        $serializer = new Serializer(array($this->getMockBuilder('Symfony\Component\Serializer\Normalizer\CustomNormalizer')->getMock()));
+        $serializer = new Serializer([$this->getMockBuilder('Symfony\Component\Serializer\Normalizer\CustomNormalizer')->getMock()]);
         $serializer->denormalize('foo', 'stdClass');
     }
 
@@ -87,17 +87,17 @@ public function testDenormalizeNoMatch()
      */
     public function testDenormalizeOnNormalizer()
     {
-        $serializer = new Serializer(array(new TestNormalizer()), array());
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([new TestNormalizer()], []);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $this->assertTrue($serializer->denormalize(json_encode($data), 'stdClass', 'json'));
     }
 
     public function testCustomNormalizerCanNormalizeCollectionsAndScalar()
     {
-        $serializer = new Serializer(array(new TestNormalizer()), array());
-        $this->assertNull($serializer->normalize(array('a', 'b')));
-        $this->assertNull($serializer->normalize(new \ArrayObject(array('c', 'd'))));
-        $this->assertNull($serializer->normalize(array()));
+        $serializer = new Serializer([new TestNormalizer()], []);
+        $this->assertNull($serializer->normalize(['a', 'b']));
+        $this->assertNull($serializer->normalize(new \ArrayObject(['c', 'd'])));
+        $this->assertNull($serializer->normalize([]));
         $this->assertNull($serializer->normalize('test'));
     }
 
@@ -115,7 +115,7 @@ public function testNormalizeWithSupportOnData()
             ->willReturn(true);
         $normalizer2->method('normalize')->willReturn('test2');
 
-        $serializer = new Serializer(array($normalizer1, $normalizer2));
+        $serializer = new Serializer([$normalizer1, $normalizer2]);
 
         $data = new \stdClass();
         $data->test = true;
@@ -138,32 +138,32 @@ public function testDenormalizeWithSupportOnData()
             ->willReturn(true);
         $denormalizer2->method('denormalize')->willReturn('test2');
 
-        $serializer = new Serializer(array($denormalizer1, $denormalizer2));
+        $serializer = new Serializer([$denormalizer1, $denormalizer2]);
 
-        $this->assertEquals('test1', $serializer->denormalize(array('test1' => true), 'test'));
+        $this->assertEquals('test1', $serializer->denormalize(['test1' => true], 'test'));
 
-        $this->assertEquals('test2', $serializer->denormalize(array(), 'test'));
+        $this->assertEquals('test2', $serializer->denormalize([], 'test'));
     }
 
     public function testSerialize()
     {
-        $serializer = new Serializer(array(new GetSetMethodNormalizer()), array('json' => new JsonEncoder()));
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([new GetSetMethodNormalizer()], ['json' => new JsonEncoder()]);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $result = $serializer->serialize(Model::fromArray($data), 'json');
         $this->assertEquals(json_encode($data), $result);
     }
 
     public function testSerializeScalar()
     {
-        $serializer = new Serializer(array(), array('json' => new JsonEncoder()));
+        $serializer = new Serializer([], ['json' => new JsonEncoder()]);
         $result = $serializer->serialize('foo', 'json');
         $this->assertEquals('"foo"', $result);
     }
 
     public function testSerializeArrayOfScalars()
     {
-        $serializer = new Serializer(array(), array('json' => new JsonEncoder()));
-        $data = array('foo', array(5, 3));
+        $serializer = new Serializer([], ['json' => new JsonEncoder()]);
+        $data = ['foo', [5, 3]];
         $result = $serializer->serialize($data, 'json');
         $this->assertEquals(json_encode($data), $result);
     }
@@ -173,8 +173,8 @@ public function testSerializeArrayOfScalars()
      */
     public function testSerializeNoEncoder()
     {
-        $serializer = new Serializer(array(), array());
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([], []);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $serializer->serialize($data, 'json');
     }
 
@@ -183,25 +183,25 @@ public function testSerializeNoEncoder()
      */
     public function testSerializeNoNormalizer()
     {
-        $serializer = new Serializer(array(), array('json' => new JsonEncoder()));
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([], ['json' => new JsonEncoder()]);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $serializer->serialize(Model::fromArray($data), 'json');
     }
 
     public function testDeserialize()
     {
-        $serializer = new Serializer(array(new GetSetMethodNormalizer()), array('json' => new JsonEncoder()));
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([new GetSetMethodNormalizer()], ['json' => new JsonEncoder()]);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $result = $serializer->deserialize(json_encode($data), '\Symfony\Component\Serializer\Tests\Model', 'json');
         $this->assertEquals($data, $result->toArray());
     }
 
     public function testDeserializeUseCache()
     {
-        $serializer = new Serializer(array(new GetSetMethodNormalizer()), array('json' => new JsonEncoder()));
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([new GetSetMethodNormalizer()], ['json' => new JsonEncoder()]);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $serializer->deserialize(json_encode($data), '\Symfony\Component\Serializer\Tests\Model', 'json');
-        $data = array('title' => 'bar', 'numbers' => array(2, 8));
+        $data = ['title' => 'bar', 'numbers' => [2, 8]];
         $result = $serializer->deserialize(json_encode($data), '\Symfony\Component\Serializer\Tests\Model', 'json');
         $this->assertEquals($data, $result->toArray());
     }
@@ -211,8 +211,8 @@ public function testDeserializeUseCache()
      */
     public function testDeserializeNoNormalizer()
     {
-        $serializer = new Serializer(array(), array('json' => new JsonEncoder()));
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([], ['json' => new JsonEncoder()]);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $serializer->deserialize(json_encode($data), '\Symfony\Component\Serializer\Tests\Model', 'json');
     }
 
@@ -221,8 +221,8 @@ public function testDeserializeNoNormalizer()
      */
     public function testDeserializeWrongNormalizer()
     {
-        $serializer = new Serializer(array(new CustomNormalizer()), array('json' => new JsonEncoder()));
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([new CustomNormalizer()], ['json' => new JsonEncoder()]);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $serializer->deserialize(json_encode($data), '\Symfony\Component\Serializer\Tests\Model', 'json');
     }
 
@@ -231,44 +231,44 @@ public function testDeserializeWrongNormalizer()
      */
     public function testDeserializeNoEncoder()
     {
-        $serializer = new Serializer(array(), array());
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([], []);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $serializer->deserialize(json_encode($data), '\Symfony\Component\Serializer\Tests\Model', 'json');
     }
 
     public function testDeserializeSupported()
     {
-        $serializer = new Serializer(array(new GetSetMethodNormalizer()), array());
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([new GetSetMethodNormalizer()], []);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $this->assertTrue($serializer->supportsDenormalization(json_encode($data), '\Symfony\Component\Serializer\Tests\Model', 'json'));
     }
 
     public function testDeserializeNotSupported()
     {
-        $serializer = new Serializer(array(new GetSetMethodNormalizer()), array());
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([new GetSetMethodNormalizer()], []);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $this->assertFalse($serializer->supportsDenormalization(json_encode($data), 'stdClass', 'json'));
     }
 
     public function testDeserializeNotSupportedMissing()
     {
-        $serializer = new Serializer(array(), array());
-        $data = array('title' => 'foo', 'numbers' => array(5, 3));
+        $serializer = new Serializer([], []);
+        $data = ['title' => 'foo', 'numbers' => [5, 3]];
         $this->assertFalse($serializer->supportsDenormalization(json_encode($data), '\Symfony\Component\Serializer\Tests\Model', 'json'));
     }
 
     public function testEncode()
     {
-        $serializer = new Serializer(array(), array('json' => new JsonEncoder()));
-        $data = array('foo', array(5, 3));
+        $serializer = new Serializer([], ['json' => new JsonEncoder()]);
+        $data = ['foo', [5, 3]];
         $result = $serializer->encode($data, 'json');
         $this->assertEquals(json_encode($data), $result);
     }
 
     public function testDecode()
     {
-        $serializer = new Serializer(array(), array('json' => new JsonEncoder()));
-        $data = array('foo', array(5, 3));
+        $serializer = new Serializer([], ['json' => new JsonEncoder()]);
+        $data = ['foo', [5, 3]];
         $result = $serializer->decode(json_encode($data), 'json');
         $this->assertEquals($data, $result);
     }
@@ -276,20 +276,20 @@ public function testDecode()
     public function testSupportsArrayDeserialization()
     {
         $serializer = new Serializer(
-            array(
+            [
                 new GetSetMethodNormalizer(),
                 new PropertyNormalizer(),
                 new ObjectNormalizer(),
                 new CustomNormalizer(),
                 new ArrayDenormalizer(),
-            ),
-            array(
+            ],
+            [
                 'json' => new JsonEncoder(),
-            )
+            ]
         );
 
         $this->assertTrue(
-            $serializer->supportsDenormalization(array(), __NAMESPACE__.'\Model[]', 'json')
+            $serializer->supportsDenormalization([], __NAMESPACE__.'\Model[]', 'json')
         );
     }
 
@@ -297,19 +297,19 @@ public function testDeserializeArray()
     {
         $jsonData = '[{"title":"foo","numbers":[5,3]},{"title":"bar","numbers":[2,8]}]';
 
-        $expectedData = array(
-            Model::fromArray(array('title' => 'foo', 'numbers' => array(5, 3))),
-            Model::fromArray(array('title' => 'bar', 'numbers' => array(2, 8))),
-        );
+        $expectedData = [
+            Model::fromArray(['title' => 'foo', 'numbers' => [5, 3]]),
+    
10000
        Model::fromArray(['title' => 'bar', 'numbers' => [2, 8]]),
+        ];
 
         $serializer = new Serializer(
-            array(
+            [
                 new GetSetMethodNormalizer(),
                 new ArrayDenormalizer(),
-            ),
-            array(
+            ],
+            [
                 'json' => new JsonEncoder(),
-            )
+            ]
         );
 
         $this->assertEquals(
@@ -325,7 +325,7 @@ public function testNormalizerAware()
             ->method('setNormalizer')
             ->with($this->isInstanceOf(NormalizerInterface::class));
 
-        new Serializer(array($normalizerAware));
+        new Serializer([$normalizerAware]);
     }
 
     public function testDenormalizerAware()
@@ -335,14 +335,14 @@ public function testDenormalizerAware()
             ->method('setDenormalizer')
             ->with($this->isInstanceOf(DenormalizerInterface::class));
 
-        new Serializer(array($denormalizerAware));
+        new Serializer([$denormalizerAware]);
     }
 
     public function testDeserializeObjectConstructorWithObjectTypeHint()
     {
         $jsonData = '{"bar":{"value":"baz"}}';
 
-        $serializer = new Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()));
+        $serializer = new Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()]);
 
         $this->assertEquals(new Foo(new Bar('baz')), $serializer->deserialize($jsonData, Foo::class, 'json'));
     }
@@ -388,7 +388,7 @@ public function setNumbers($numbers)
 
     public function toArray()
     {
-        return array('title' => $this->title, 'numbers' => $this->numbers);
+        return ['title' => $this->title, 'numbers' => $this->numbers];
     }
 }
 
diff --git a/src/Symfony/Component/Stopwatch/Section.php b/src/Symfony/Component/Stopwatch/Section.php
index 2be995bb2b13..14fba8b582d3 100644
--- a/src/Symfony/Component/Stopwatch/Section.php
+++ b/src/Symfony/Component/Stopwatch/Section.php
@@ -21,7 +21,7 @@ class Section
     /**
      * @var StopwatchEvent[]
      */
-    private $events = array();
+    private $events = [];
 
     /**
      * @var float|null
@@ -41,7 +41,7 @@ class Section
     /**
      * @var Section[]
      */
-    private $children = array();
+    private $children = [];
 
     /**
      * @param float|null $origin        Set the origin of the events in this section, use null to set their origin to their start time
diff --git a/src/Symfony/Component/Stopwatch/Stopwatch.php b/src/Symfony/Component/Stopwatch/Stopwatch.php
index e0024b0d1600..128e9488ba76 100644
--- a/src/Symfony/Component/Stopwatch/Stopwatch.php
+++ b/src/Symfony/Component/Stopwatch/Stopwatch.php
@@ -163,7 +163,7 @@ public function getEvent($name)
      */
     public function getSectionEvents($id)
     {
-        return isset($this->sections[$id]) ? $this->sections[$id]->getEvents() : array();
+        return isset($this->sections[$id]) ? $this->sections[$id]->getEvents() : [];
     }
 
     /**
@@ -171,6 +171,6 @@ public function getSectionEvents($id)
      */
     public function reset()
     {
-        $this->sections = $this->activeSections = array('__root__' => new Section(null, $this->morePrecision));
+        $this->sections = $this->activeSections = ['__root__' => new Section(null, $this->morePrecision)];
     }
 }
diff --git a/src/Symfony/Component/Stopwatch/StopwatchEvent.php b/src/Symfony/Component/Stopwatch/StopwatchEvent.php
index f04f0ac1ebae..bc8c6b5f47b7 100644
--- a/src/Symfony/Component/Stopwatch/StopwatchEvent.php
+++ b/src/Symfony/Component/Stopwatch/StopwatchEvent.php
@@ -21,7 +21,7 @@ class StopwatchEvent
     /**
      * @var StopwatchPeriod[]
      */
-    private $periods = array();
+    private $periods = [];
 
     /**
      * @var float
@@ -41,7 +41,7 @@ class StopwatchEvent
     /**
      * @var float[]
      */
-    private $started = array();
+    private $started = [];
 
     /**
      * @param float       $origin        The origin time in milliseconds
diff --git a/src/Symfony/Component/Stopwatch/Tests/StopwatchEventTest.php b/src/Symfony/Component/Stopwatch/Tests/StopwatchEventTest.php
index 2742ca544a3f..415ab3e9d56b 100644
--- a/src/Symfony/Component/Stopwatch/Tests/StopwatchEventTest.php
+++ b/src/Symfony/Component/Stopwatch/Tests/StopwatchEventTest.php
@@ -43,7 +43,7 @@ public function testGetCategory()
     public function testGetPeriods()
     {
         $event = new StopwatchEvent(microtime(true) * 1000);
-        $this->assertEquals(array(), $event->getPeriods());
+        $this->assertEquals([], $event->getPeriods());
 
         $event = new StopwatchEvent(microtime(true) * 1000);
         $event->start();
diff --git a/src/Symfony/Component/Stopwatch/Tests/StopwatchPeriodTest.php b/src/Symfony/Component/Stopwatch/Tests/StopwatchPeriodTest.php
index f2387b8285be..717ff9d56aee 100644
--- a/src/Symfony/Component/Stopwatch/Tests/StopwatchPeriodTest.php
+++ b/src/Symfony/Component/Stopwatch/Tests/StopwatchPeriodTest.php
@@ -45,23 +45,23 @@ public function testGetDuration($start, $end, $useMorePrecision, $duration)
 
     public function provideTimeValues()
     {
-        yield array(0, false, 0);
-        yield array(0, true, 0.0);
-        yield array(0.0, false, 0);
-        yield array(0.0, true, 0.0);
-        yield array(2.71, false, 2);
-        yield array(2.71, true, 2.71);
+        yield [0, false, 0];
+        yield [0, true, 0.0];
+        yield [0.0, false, 0];
+        yield [0.0, true, 0.0];
+        yield [2.71, false, 2];
+        yield [2.71, true, 2.71];
     }
 
     public function provideDurationValues()
     {
-        yield array(0, 0, false, 0);
-        yield array(0, 0, true, 0.0);
-        yield array(0.0, 0.0, false, 0);
-        yield array(0.0, 0.0, true, 0.0);
-        yield array(2, 3.14, false, 1);
-        yield array(2, 3.14, true, 1.14);
-        yield array(2.71, 3.14, false, 1);
-        yield array(2.71, 3.14, true, 0.43);
+        yield [0, 0, false, 0];
+        yield [0, 0, true, 0.0];
+        yield [0.0, 0.0, false, 0];
+        yield [0.0, 0.0, true, 0.0];
+        yield [2, 3.14, false, 1];
+        yield [2, 3.14, true, 1.14];
+        yield [2.71, 3.14, false, 1];
+        yield [2.71, 3.14, true, 0.43];
     }
 }
diff --git a/src/Symfony/Component/Stopwatch/Tests/StopwatchTest.php b/src/Symfony/Component/Stopwatch/Tests/StopwatchTest.php
index a5cb3dd92ae6..30f976ad040a 100644
--- a/src/Symfony/Component/Stopwatch/Tests/StopwatchTest.php
+++ b/src/Symfony/Component/Stopwatch/Tests/StopwatchTest.php
@@ -70,11 +70,11 @@ public function testIsNotStartedEvent()
         $events->setAccessible(true);
 
         $stopwatchMockEvent = $this->getMockBuilder('Symfony\Component\Stopwatch\StopwatchEvent')
-            ->setConstructorArgs(array(microtime(true) * 1000))
+            ->setConstructorArgs([microtime(true) * 1000])
             ->getMock()
         ;
 
-        $events->setValue(end($section), array('foo' => $stopwatchMockEvent));
+        $events->setValue(end($section), ['foo' => $stopwatchMockEvent]);
 
         $this->assertFalse($stopwatch->isStarted('foo'));
     }
diff --git a/src/Symfony/Component/Templating/DelegatingEngine.php b/src/Symfony/Component/Templating/DelegatingEngine.php
index b47a0f062036..90cdbfa235de 100644
--- a/src/Symfony/Component/Templating/DelegatingEngine.php
+++ b/src/Symfony/Component/Templating/DelegatingEngine.php
@@ -21,12 +21,12 @@ class DelegatingEngine implements EngineInterface, StreamingEngineInterface
     /**
      * @var EngineInterface[]
      */
-    protected $engines = array();
+    protected $engines = [];
 
     /**
      * @param EngineInterface[] $engines An array of EngineInterface instances to add
      */
-    public function __construct(array $engines = array())
+    public function __construct(array $engines = [])
     {
         foreach ($engines as $engine) {
             $this->addEngine($engine);
@@ -36,7 +36,7 @@ public function __construct(array $engines = array())
     /**
      * {@inheritdoc}
      */
-    public function render($name, array $parameters = array())
+    public function render($name, array $parameters = [])
     {
         return $this->getEngine($name)->render($name, $parameters);
     }
@@ -44,7 +44,7 @@ public function render($name, array $parameters = array())
     /**
      * {@inheritdoc}
      */
-    public function stream($name, array $parameters = array())
+    public function stream($name, array $parameters = [])
     {
         $engine = $this->getEngine($name);
         if (!$engine instanceof StreamingEngineInterface) {
diff --git a/src/Symfony/Component/Templating/EngineInterface.php b/src/Symfony/Component/Templating/EngineInterface.php
index fb02c80dafe6..ab4ccc71c0aa 100644
--- a/src/Symfony/Component/Templating/EngineInterface.php
+++ b/src/Symfony/Component/Templating/EngineInterface.php
@@ -40,7 +40,7 @@ interface EngineInterface
      *
      * @throws \RuntimeException if the template cannot be rendered
      */
-    public function render($name, array $parameters = array());
+    public function render($name, array $parameters = []);
 
     /**
      * Returns true if the template exists.
diff --git a/src/Symfony/Component/Templating/Helper/SlotsHelper.php b/src/Symfony/Component/Templating/Helper/SlotsHelper.php
index e5faf7fe8871..80acdc93b6df 100644
--- a/src/Symfony/Component/Templating/Helper/SlotsHelper.php
+++ b/src/Symfony/Component/Templating/Helper/SlotsHelper.php
@@ -18,8 +18,8 @@
  */
 class SlotsHelper extends Helper
 {
-    protected $slots = array();
-    protected $openSlots = array();
+    protected $slots = [];
+    protected $openSlots = [];
 
     /**
      * Starts a new slot.
diff --git a/src/Symfony/Component/Templating/Loader/CacheLoader.php b/src/Symfony/Component/Templating/Loader/CacheLoader.php
index c26ffd6322d7..251c3292d346 100644
--- a/src/Symfony/Component/Templating/Loader/CacheLoader.php
+++ b/src/Symfony/Component/Templating/Loader/CacheLoader.php
@@ -53,7 +53,7 @@ public function load(TemplateReferenceInterface $template)
 
         if (is_file($path)) {
             if (null !== $this->logger) {
-                $this->logger->debug('Fetching template from cache.', array('name' => $template->get('name')));
+                $this->logger->debug('Fetching template from cache.', ['name' => $template->get('name')]);
             }
 
             return new FileStorage($path);
@@ -72,7 +72,7 @@ public function load(TemplateReferenceInterface $template)
         file_put_contents($path, $content);
 
         if (null !== $this->logger) {
-            $this->logger->debug('Storing template in cache.', array('name' => $template->get('name')));
+            $this->logger->debug('Storing template in cache.', ['name' => $template->get('name')]);
         }
 
         return new FileStorage($path);
diff --git a/src/Symfony/Component/Templating/Loader/ChainLoader.php b/src/Symfony/Component/Templating/Loader/ChainLoader.php
index d66139e0b3ff..3e5f375cb79a 100644
--- a/src/Symfony/Component/Templating/Loader/ChainLoader.php
+++ b/src/Symfony/Component/Templating/Loader/ChainLoader.php
@@ -21,12 +21,12 @@
  */
 class ChainLoader extends Loader
 {
-    protected $loaders = array();
+    protected $loaders = [];
 
     /**
      * @param LoaderInterface[] $loaders An array of loader instances
      */
-    public function __construct(array $loaders = array())
+    public function __construct(array $loaders = [])
     {
         foreach ($loaders as $loader) {
             $this->addLoader($loader);
diff --git a/src/Symfony/Component/Templating/Loader/FilesystemLoader.php b/src/Symfony/Component/Templating/Loader/FilesystemLoader.php
index 919c96fb200c..016018cf1b2f 100644
--- a/src/Symfony/Component/Templating/Loader/FilesystemLoader.php
+++ b/src/Symfony/Component/Templating/Loader/FilesystemLoader.php
@@ -45,16 +45,16 @@ public function load(TemplateReferenceInterface $template)
             return new FileStorage($file);
         }
 
-        $replacements = array();
+        $replacements = [];
         foreach ($template->all() as $key => $value) {
             $replacements['%'.$key.'%'] = $value;
         }
 
-        $fileFailures = array();
+        $fileFailures = [];
         foreach ($this->templatePathPatterns as $templatePathPattern) {
             if (is_file($file = strtr($templatePathPattern, $replacements)) && is_readable($file)) {
                 if (null !== $this->logger) {
-                    $this->logger->debug('Loaded template file.', array('file' => $file));
+                    $this->logger->debug('Loaded template file.', ['file' => $file]);
                 }
 
                 return new FileStorage($file);
@@ -68,7 +68,7 @@ public function load(TemplateReferenceInterface $template)
         // only log failures if no template could be loaded at all
         foreach ($fileFailures as $file) {
             if (null !== $this->logger) {
-                $this->logger->debug('Failed loading template file.', array('file' => $file));
+                $this->logger->debug('Failed loading template file.', ['file' => $file]);
             }
         }
 
diff --git a/src/Symfony/Component/Templating/PhpEngine.php b/src/Symfony/Component/Templating/PhpEngine.php
index 1d24448207d5..f67c29d074b3 100644
--- a/src/Symfony/Component/Templating/PhpEngine.php
+++ b/src/Symfony/Component/Templating/PhpEngine.php
@@ -29,14 +29,14 @@ class PhpEngine implements EngineInterface, \ArrayAccess
     /**
      * @var HelperInterface[]
      */
-    protected $helpers = array();
-    protected $parents = array();
-    protected $stack = array();
+    protected $helpers = [];
+    protected $parents = [];
+    protected $stack = [];
     protected $charset = 'UTF-8';
-    protected $cache = array();
-    protected $escapers = array();
-    protected static $escaperCache = array();
-    protected $globals = array();
+    protected $cache = [];
+    protected $escapers = [];
+    protected static $escaperCache = [];
+    protected $globals = [];
     protected $parser;
 
     private $evalTemplate;
@@ -47,7 +47,7 @@ class PhpEngine implements EngineInterface, \ArrayAccess
      * @param LoaderInterface             $loader  A loader instance
      * @param HelperInterface[]           $helpers An array of helper instances
      */
-    public function __construct(TemplateNameParserInterface $parser, LoaderInterface $loader, array $helpers = array())
+    public function __construct(TemplateNameParserInterface $parser, LoaderInterface $loader, array $helpers = [])
     {
         $this->parser = $parser;
         $this->loader = $loader;
@@ -65,7 +65,7 @@ public function __construct(TemplateNameParserInterface $parser, LoaderInterface
      *
      * @throws \InvalidArgumentException if the template does not exist
      */
-    public function render($name, array $parameters = array())
+    public function render($name, array $parameters = [])
     {
         $storage = $this->load($name);
         $key = hash('sha256', serialize($storage));
@@ -127,7 +127,7 @@ public function supports($name)
      *
      * @throws \InvalidArgumentException
      */
-    protected function evaluate(Storage $template, array $parameters = array())
+    protected function evaluate(Storage $template, array $parameters = [])
     {
         $this->evalTemplate = $template;
         $this->evalParameters = $parameters;
@@ -235,7 +235,7 @@ public function addHelpers(array $helpers)
      */
     public function setHelpers(array $helpers)
     {
-        $this->helpers = array();
+        $this->helpers = [];
         $this->addHelpers($helpers);
     }
 
@@ -358,7 +358,7 @@ public function getCharset()
     public function setEscaper($context, callable $escaper)
     {
         $this->escapers[$context] = $escaper;
-        self::$escaperCache[$context] = array();
+        self::$escaperCache[$context] = [];
     }
 
     /**
@@ -419,7 +419,7 @@ protected function initializeEscapers()
     {
         $flags = ENT_QUOTES | ENT_SUBSTITUTE;
 
-        $this->escapers = array(
+        $this->escapers = [
             'html' =>
                 /**
                  * Runs the PHP function htmlspecialchars on the value passed.
@@ -472,9 +472,9 @@ function ($value) {
 
                     return $value;
                 },
-        );
+        ];
 
-        self::$escaperCache = array();
+        self::$escaperCache = [];
     }
 
     /**
diff --git a/src/Symfony/Component/Templating/StreamingEngineInterface.php b/src/Symfony/Component/Templating/StreamingEngineInterface.php
index f8815f85f19b..d389ccc52d81 100644
--- a/src/Symfony/Component/Templating/StreamingEngineInterface.php
+++ b/src/Symfony/Component/Templating/StreamingEngineInterface.php
@@ -29,5 +29,5 @@ interface StreamingEngineInterface
      * @throws \RuntimeException if the template cannot be rendered
      * @throws \LogicException   if the template cannot be streamed
      */
-    public function stream($name, array $parameters = array());
+    public function stream($name, array $parameters = []);
 }
diff --git a/src/Symfony/Component/Templating/TemplateReference.php b/src/Symfony/Component/Templating/TemplateReference.php
index 3477f088ff24..88f71f95b07d 100644
--- a/src/Symfony/Component/Templating/TemplateReference.php
+++ b/src/Symfony/Component/Templating/TemplateReference.php
@@ -22,10 +22,10 @@ class TemplateReference implements TemplateReferenceInterface
 
     public function __construct($name = null, $engine = null)
     {
-        $this->parameters = array(
+        $this->parameters = [
             'name' => $name,
             'engine' => $engine,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Templating/Tests/DelegatingEngineTest.php b/src/Symfony/Component/Templating/Tests/DelegatingEngineTest.php
index cadd9edf0b54..875672d27fff 100644
--- a/src/Symfony/Component/Templating/Tests/DelegatingEngineTest.php
+++ b/src/Symfony/Component/Templating/Tests/DelegatingEngineTest.php
@@ -25,11 +25,11 @@ public function testRenderDelegatesToSupportedEngine()
 
         $secondEngine->expects($this->once())
             ->method('render')
-            ->with('template.php', array('foo' => 'bar'))
+            ->with('template.php', ['foo' => 'bar'])
             ->will($this->returnValue('<html />'));
 
-        $delegatingEngine = new DelegatingEngine(array($firstEngine, $secondEngine));
-        $result = $delegatingEngine->render('template.php', array('foo' => 'bar'));
+        $delegatingEngine = new DelegatingEngine([$firstEngine, $secondEngine]);
+        $result = $delegatingEngine->render('template.php', ['foo' => 'bar']);
 
         $this->assertSame('<html />', $result);
     }
@@ -43,8 +43,8 @@ public function testRenderWithNoSupportedEngine()
         $firstEngine = $this->getEngineMock('template.php', false);
         $secondEngine = $this->getEngineMock('template.php', false);
 
-        $delegatingEngine = new DelegatingEngine(array($firstEngine, $secondEngine));
-        $delegatingEngine->render('template.php', array('foo' => 'bar'));
+        $delegatingEngine = new DelegatingEngine([$firstEngine, $secondEngine]);
+        $delegatingEngine->render('template.php', ['foo' => 'bar']);
     }
 
     public function testStreamDelegatesToSupportedEngine()
@@ -52,11 +52,11 @@ public function testStreamDelegatesToSupportedEngine()
         $streamingEngine = $this->getStreamingEngineMock('template.php', true);
         $streamingEngine->expects($this->once())
             ->method('stream')
-            ->with('template.php', array('foo' => 'bar'))
+            ->with('template.php', ['foo' => 'bar'])
             ->will($this->returnValue('<html />'));
 
-        $delegatingEngine = new DelegatingEngine(array($streamingEngine));
-        $result = $delegatingEngine->stream('template.php', array('foo' => 'bar'));
+        $delegatingEngine = new DelegatingEngine([$streamingEngine]);
+        $result = $delegatingEngine->stream('template.php', ['foo' => 'bar']);
 
         $this->assertNull($result);
     }
@@ -67,8 +67,8 @@ public function testStreamDelegatesToSupportedEngine()
      */
     public function testStreamRequiresStreamingEngine()
     {
-        $delegatingEngine = new DelegatingEngine(array(new TestEngine()));
-        $delegatingEngine->stream('template.php', array('foo' => 'bar'));
+        $delegatingEngine = new DelegatingEngine([new TestEngine()]);
+        $delegatingEngine->stream('template.php', ['foo' => 'bar']);
     }
 
     public function testExists()
@@ -79,7 +79,7 @@ public function testExists()
             ->with('template.php')
             ->will($this->returnValue(true));
 
-        $delegatingEngine = new DelegatingEngine(array($engine));
+        $delegatingEngine = new DelegatingEngine([$engine]);
 
         $this->assertTrue($delegatingEngine->exists('template.php'));
     }
@@ -88,7 +88,7 @@ public function testSupports()
     {
         $engine = $this->getEngineMock('template.php', true);
 
-        $delegatingEngine = new DelegatingEngine(array($engine));
+        $delegatingEngine = new DelegatingEngine([$engine]);
 
         $this->assertTrue($delegatingEngine->supports('template.php'));
     }
@@ -97,7 +97,7 @@ public function testSupportsWithNoSupportedEngine()
     {
         $engine = $this->getEngineMock('template.php', false);
 
-        $delegatingEngine = new DelegatingEngine(array($engine));
+        $delegatingEngine = new DelegatingEngine([$engine]);
 
         $this->assertFalse($delegatingEngine->supports('template.php'));
     }
@@ -107,7 +107,7 @@ public function testGetExistingEngine()
         $firstEngine = $this->getEngineMock('template.php', false);
         $secondEngine = $this->getEngineMock('template.php', true);
 
-        $delegatingEngine = new DelegatingEngine(array($firstEngine, $secondEngine));
+        $delegatingEngine = new DelegatingEngine([$firstEngine, $secondEngine]);
 
         $this->assertSame($secondEngine, $delegatingEngine->getEngine('template.php'));
     }
@@ -121,7 +121,7 @@ public function testGetInvalidEngine()
         $firstEngine = $this->getEngineMock('template.php', false);
         $secondEngine = $this->getEngineMock('template.php', false);
 
-        $delegatingEngine = new DelegatingEngine(array($firstEngine, $secondEngine));
+        $delegatingEngine = new DelegatingEngine([$firstEngine, $secondEngine]);
         $delegatingEngine->getEngine('template.php');
     }
 
@@ -156,7 +156,7 @@ interface MyStreamingEngine extends StreamingEngineInterface, EngineInterface
 
 class TestEngine implements EngineInterface
 {
-    public function render($name, array $parameters = array())
+    public function render($name, array $parameters = [])
     {
     }
 
diff --git a/src/Symfony/Component/Templating/Tests/Loader/CacheLoaderTest.php b/src/Symfony/Component/Templating/Tests/Loader/CacheLoaderTest.php
index dbc89bc6d1fb..e66d62398a89 100644
--- a/src/Symfony/Component/Templating/Tests/Loader/CacheLoaderTest.php
+++ b/src/Symfony/Component/Templating/Tests/Loader/CacheLoaderTest.php
@@ -39,7 +39,7 @@ public function testLoad()
         $logger
             ->expects($this->once())
             ->method('debug')
-            ->with('Storing template in cache.', array('name' => 'index'));
+            ->with('Storing template in cache.', ['name' => 'index']);
         $loader->setLogger($logger);
         $loader->load(new TemplateReference('index'));
 
@@ -47,7 +47,7 @@ public function testLoad()
         $logger
             ->expects($this->once())
             ->method('debug')
-            ->with('Fetching template from cache.', array('name' => 'index'));
+            ->with('Fetching template from cache.', ['name' => 'index']);
         $loader->setLogger($logger);
         $loader->load(new TemplateReference('index'));
     }
diff --git a/src/Symfony/Component/Templating/Tests/Loader/ChainLoaderTest.php b/src/Symfony/Component/Templating/Tests/Loader/ChainLoaderTest.php
index 7e403995a075..c81698bd89ca 100644
--- a/src/Symfony/Component/Templating/Tests/Loader/ChainLoaderTest.php
+++ b/src/Symfony/Component/Templating/Tests/Loader/ChainLoaderTest.php
@@ -30,20 +30,20 @@ protected function setUp()
 
     public function testConstructor()
     {
-        $loader = new ProjectTemplateLoader1(array($this->loader1, $this->loader2));
-        $this->assertEquals(array($this->loader1, $this->loader2), $loader->getLoaders(), '__construct() takes an array of template loaders as its second argument');
+        $loader = new ProjectTemplateLoader1([$this->loader1, $this->loader2]);
+        $this->assertEquals([$this->loader1, $this->loader2], $loader->getLoaders(), '__construct() takes an array of template loaders as its second argument');
     }
 
     public function testAddLoader()
     {
-        $loader = new ProjectTemplateLoader1(array($this->loader1));
+        $loader = new ProjectTemplateLoader1([$this->loader1]);
         $loader->addLoader($this->loader2);
-        $this->assertEquals(array($this->loader1, $this->loader2), $loader->getLoaders(), '->addLoader() adds a template loader at the end of the loaders');
+        $this->assertEquals([$this->loader1, $this->loader2], $loader->getLoaders(), '->addLoader() adds a template loader at the end of the loaders');
     }
 
     public function testLoad()
     {
-        $loader = new ProjectTemplateLoader1(array($this->loader1, $this->loader2));
+        $loader = new ProjectTemplateLoader1([$this->loader1, $this->loader2]);
         $this->assertFalse($loader->load(new TemplateReference('bar', 'php')), '->load() returns false if the template is not found');
         $this->assertFalse($loader->load(new TemplateReference('foo', 'php')), '->load() returns false if the template does not exist for the given renderer');
         $this->assertInstanceOf(
diff --git a/src/Symfony/Component/Templating/Tests/Loader/FilesystemLoaderTest.php b/src/Symfony/Component/Templating/Tests/Loader/FilesystemLoaderTest.php
index 04b93fb1c575..c6dcdefc95f5 100644
--- a/src/Symfony/Component/Templating/Tests/Loader/FilesystemLoaderTest.php
+++ b/src/Symfony/Component/Templating/Tests/Loader/FilesystemLoaderTest.php
@@ -29,9 +29,9 @@ public function testConstructor()
         $pathPattern = self::$fixturesPath.'/templates/%name%.%engine%';
         $path = self::$fixturesPath.'/templates';
         $loader = new ProjectTemplateLoader2($pathPattern);
-        $this->assertEquals(array($pathPattern), $loader->getTemplatePathPatterns(), '__construct() takes a path as its second argument');
-        $loader = new ProjectTemplateLoader2(array($pathPattern));
-        $this->assertEquals(array($pathPattern), $loader->getTemplatePathPatterns(), '__construct() takes an array of paths as its second argument');
+        $this->assertEquals([$pathPattern], $loader->getTemplatePathPatterns(), '__construct() takes a path as its second argument');
+        $loader = new ProjectTemplateLoader2([$pathPattern]);
+        $this->assertEquals([$pathPattern], $loader->getTemplatePathPatterns(), '__construct() takes an array of paths as its second argument');
     }
 
     public function testIsAbsolutePath()
@@ -66,7 +66,7 @@ public function testLoad()
         $loader->setLogger($logger);
         $this->assertFalse($loader->load(new TemplateReference('foo.xml', 'php')), '->load() returns false if the template does not exist for the given engine');
 
-        $loader = new ProjectTemplateLoader2(array(self::$fixturesPath.'/null/%name%', $pathPattern));
+        $loader = new ProjectTemplateLoader2([self::$fixturesPath.'/null/%name%', $pathPattern]);
         $loader->setLogger($logger);
         $loader->load(new TemplateReference('foo.php', 'php'));
     }
diff --git a/src/Symfony/Component/Templating/Tests/PhpEngineTest.php b/src/Symfony/Component/Templating/Tests/PhpEngineTest.php
index f677c3028d03..1b469d7e4765 100644
--- a/src/Symfony/Component/Templating/Tests/PhpEngineTest.php
+++ b/src/Symfony/Component/Templating/Tests/PhpEngineTest.php
@@ -93,7 +93,7 @@ public function testUnsetHelper()
 
     public function testExtendRender()
     {
-        $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader, array(), array(new SlotsHelper()));
+        $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader, [], [new SlotsHelper()]);
         try {
             $engine->render('name');
             $this->fail('->render() throws an InvalidArgumentException if the template does not exist');
@@ -102,25 +102,25 @@ public function testExtendRender()
             $this->assertEquals('The template "name" does not exist.', $e->getMessage(), '->render() throws an InvalidArgumentException if the template does not exist');
         }
 
-        $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader, array(new SlotsHelper()));
+        $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader, [new SlotsHelper()]);
         $engine->set(new \Symfony\Component\Templating\Tests\Fixtures\SimpleHelper('bar'));
         $this->loader->setTemplate('foo.php', '<?php $this->extend("layout.php"); echo $this[\'foo\'].$foo ?>');
         $this->loader->setTemplate('layout.php', '-<?php echo $this[\'slots\']->get("_content") ?>-');
-        $this->assertEquals('-barfoo-', $engine->render('foo.php', array('foo' => 'foo')), '->render() uses the decorator to decorate the template');
+        $this->assertEquals('-barfoo-', $engine->render('foo.php', ['foo' => 'foo']), '->render() uses the decorator to decorate the template');
 
-        $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader, array(new SlotsHelper()));
+        $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader, [new SlotsHelper()]);
         $engine->set(new \Symfony\Component\Templating\Tests\Fixtures\SimpleHelper('bar'));
         $this->loader->setTemplate('bar.php', 'bar');
         $this->loader->setTemplate('foo.php', '<?php $this->extend("layout.php"); echo $foo ?>');
         $this->loader->setTemplate('layout.php', '<?php echo $this->render("bar.php") ?>-<?php echo $this[\'slots\']->get("_content") ?>-');
-        $this->assertEquals('bar-foo-', $engine->render('foo.php', array('foo' => 'foo', 'bar' => 'bar')), '->render() supports render() calls in templates');
+        $this->assertEquals('bar-foo-', $engine->render('foo.php', ['foo' => 'foo', 'bar' => 'bar']), '->render() supports render() calls in templates');
     }
 
     public function testRenderParameter()
     {
         $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader);
         $this->loader->setTemplate('foo.php', '<?php echo $template . $parameters ?>');
-        $this->assertEquals('foobar', $engine->render('foo.php', array('template' => 'foo', 'parameters' => 'bar')), '->render() extract variables');
+        $this->assertEquals('foobar', $engine->render('foo.php', ['template' => 'foo', 'parameters' => 'bar']), '->render() extract variables');
     }
 
     /**
@@ -131,15 +131,15 @@ public function testRenderForbiddenParameter($name)
     {
         $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader);
         $this->loader->setTemplate('foo.php', 'bar');
-        $engine->render('foo.php', array($name => 'foo'));
+        $engine->render('foo.php', [$name => 'foo']);
     }
 
     public function forbiddenParameterNames()
     {
-        return array(
-            array('this'),
-            array('view'),
-        );
+        return [
+            ['this'],
+            ['view'],
+        ];
     }
 
     public function testEscape()
@@ -153,7 +153,7 @@ public function testEscape()
     public function testGetSetCharset()
     {
         $helper = new SlotsHelper();
-        $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader, array($helper));
+        $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader, [$helper]);
         $this->assertEquals('UTF-8', $engine->getCharset(), 'EngineInterface::getCharset() returns UTF-8 by default');
         $this->assertEquals('UTF-8', $helper->getCharset(), 'HelperInterface::getCharset() returns UTF-8 by default');
 
@@ -167,9 +167,9 @@ public function testGlobalVariables()
         $engine = new ProjectTemplateEngine(new TemplateNameParser(), $this->loader);
         $engine->addGlobal('global_variable', 'lorem ipsum');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'global_variable' => 'lorem ipsum',
-        ), $engine->getGlobals());
+        ], $engine->getGlobals());
     }
 
     public function testGlobalsGetPassedToTemplate()
@@ -181,7 +181,7 @@ public function testGlobalsGetPassedToTemplate()
 
         $this->assertEquals($engine->render('global.php'), 'global variable');
 
-        $this->assertEquals($engine->render('global.php', array('global' => 'overwritten')), 'overwritten');
+        $this->assertEquals($engine->render('global.php', ['global' => 'overwritten']), 'overwritten');
     }
 
     public function testGetLoader()
@@ -202,7 +202,7 @@ public function getLoader()
 
 class ProjectTemplateLoader extends Loader
 {
-    public $templates = array();
+    public $templates = [];
 
     public function setTemplate($name, $content)
     {
diff --git a/src/Symfony/Component/Templating/Tests/TemplateNameParserTest.php b/src/Symfony/Component/Templating/Tests/TemplateNameParserTest.php
index 14a019402fd3..c67dc376c236 100644
--- a/src/Symfony/Component/Templating/Tests/TemplateNameParserTest.php
+++ b/src/Symfony/Component/Templating/Tests/TemplateNameParserTest.php
@@ -42,10 +42,10 @@ public function testParse($name, $ref)
 
     public function getLogicalNameToTemplateProvider()
     {
-        return array(
-            array('/path/to/section/name.engine', new TemplateReference('/path/to/section/name.engine', 'engine')),
-            array('name.engine', new TemplateReference('name.engine', 'engine')),
-            array('name', new TemplateReference('name')),
-        );
+        return [
+            ['/path/to/section/name.engine', new TemplateReference('/path/to/section/name.engine', 'engine')],
+            ['name.engine', new TemplateReference('name.engine', 'engine')],
+            ['name', new TemplateReference('name')],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php b/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
index a0765ddd66d0..b8fdc926839e 100644
--- a/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
+++ b/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
@@ -70,7 +70,7 @@ public function __construct(MessageCatalogueInterface $source, MessageCatalogueI
         $this->source = $source;
         $this->target = $target;
         $this->result = new MessageCatalogue($source->getLocale());
-        $this->messages = array();
+        $this->messages = [];
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Catalogue/MergeOperation.php b/src/Symfony/Component/Translation/Catalogue/MergeOperation.php
index 6db3f801f3b2..4e1e3cec3d77 100644
--- a/src/Symfony/Component/Translation/Catalogue/MergeOperation.php
+++ b/src/Symfony/Component/Translation/Catalogue/MergeOperation.php
@@ -27,15 +27,15 @@ class MergeOperation extends AbstractOperation
      */
     protected function processDomain($domain)
     {
-        $this->messages[$domain] = array(
-            'all' => array(),
-            'new' => array(),
-            'obsolete' => array(),
-        );
+        $this->messages[$domain] = [
+            'all' => [],
+            'new' => [],
+            'obsolete' => [],
+        ];
 
         foreach ($this->source->all($domain) as $id => $message) {
             $this->messages[$domain]['all'][$id] = $message;
-            $this->result->add(array($id => $message), $domain);
+            $this->result->add([$id => $message], $domain);
             if (null !== $keyMetadata = $this->source->getMetadata($id, $domain)) {
                 $this->result->setMetadata($id, $keyMetadata, $domain);
             }
@@ -45,7 +45,7 @@ protected function processDomain($domain)
             if (!$this->source->has($id, $domain)) {
                 $this->messages[$domain]['all'][$id] = $message;
                 $this->messages[$domain]['new'][$id] = $message;
-                $this->result->add(array($id => $message), $domain);
+                $this->result->add([$id => $message], $domain);
                 if (null !== $keyMetadata = $this->target->getMetadata($id, $domain)) {
                     $this->result->setMetadata($id, $keyMetadata, $domain);
                 }
diff --git a/src/Symfony/Component/Translation/Catalogue/TargetOperation.php b/src/Symfony/Component/Translation/Catalogue/TargetOperation.php
index c2490e12e35e..35eff71ff90a 100644
--- a/src/Symfony/Component/Translation/Catalogue/TargetOperation.php
+++ b/src/Symfony/Component/Translation/Catalogue/TargetOperation.php
@@ -28,11 +28,11 @@ class TargetOperation extends AbstractOperation
      */
     protected function processDomain($domain)
     {
-        $this->messages[$domain] = array(
-            'all' => array(),
-            'new' => array(),
-            'obsolete' => array(),
-        );
+        $this->messages[$domain] = [
+            'all' => [],
+            'new' => [],
+            'obsolete' => [],
+        ];
 
         // For 'all' messages, the code can't be simplified as ``$this->messages[$domain]['all'] = $target->all($domain);``,
         // because doing so will drop messages like {x: x ∈ source ∧ x ∉ target.all ∧ x ∈ target.fallback}
@@ -46,7 +46,7 @@ protected function processDomain($domain)
         foreach ($this->source->all($domain) as $id => $message) {
             if ($this->target->has($id, $domain)) {
                 $this->messages[$domain]['all'][$id] = $message;
-                $this->result->add(array($id => $message), $domain);
+                $this->result->add([$id => $message], $domain);
                 if (null !== $keyMetadata = $this->source->getMetadata($id, $domain)) {
                     $this->result->setMetadata($id, $keyMetadata, $domain);
                 }
@@ -59,7 +59,7 @@ protected function processDomain($domain)
             if (!$this->source->has($id, $domain)) {
                 $this->messages[$domain]['all'][$id] = $message;
                 $this->messages[$domain]['new'][$id] = $message;
-                $this->result->add(array($id => $message), $domain);
+                $this->result->add([$id => $message], $domain);
                 if (null !== $keyMetadata = $this->target->getMetadata($id, $domain)) {
                     $this->result->setMetadata($id, $keyMetadata, $domain);
                 }
diff --git a/src/Symfony/Component/Translation/Command/XliffLintCommand.php b/src/Symfony/Component/Translation/Command/XliffLintCommand.php
index 885d20e4b0d3..89a4e50e21fa 100644
--- a/src/Symfony/Component/Translation/Command/XliffLintCommand.php
+++ b/src/Symfony/Component/Translation/Command/XliffLintCommand.php
@@ -85,14 +85,14 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
             }
 
-            return $this->display($io, array($this->validate($stdin)));
+            return $this->display($io, [$this->validate($stdin)]);
         }
 
         if (!$this->isReadable($filename)) {
             throw new RuntimeException(sprintf('File or directory "%s" is not readable.', $filename));
         }
 
-        $filesInfo = array();
+        $filesInfo = [];
         foreach ($this->getFiles($filename) as $file) {
             $filesInfo[] = $this->validate(file_get_contents($file), $file);
         }
@@ -104,7 +104,7 @@ private function validate($content, $file = null)
     {
         // Avoid: Warning DOMDocument::loadXML(): Empty string supplied as input
         if ('' === trim($content)) {
-            return array('file' => $file, 'valid' => true);
+            return ['file' => $file, 'valid' => true];
         }
 
         libxml_use_internal_errors(true);
@@ -112,21 +112,21 @@ private function validate($content, $file = null)
         $document = new \DOMDocument();
         $document->loadXML($content);
         if ($document->schemaValidate(__DIR__.'/../Resources/schemas/xliff-core-1.2-strict.xsd')) {
-            return array('file' => $file, 'valid' => true);
+            return ['file' => $file, 'valid' => true];
         }
 
         $errorMessages = array_map(function ($error) {
-            return array(
+            return [
                 'line' => $error->line,
                 'column' => $error->column,
                 'message' => trim($error->message),
-            );
+            ];
         }, libxml_get_errors());
 
         libxml_clear_errors();
         libxml_use_internal_errors(false);
 
-        return array('file' => $file, 'valid' => false, 'messages' => $errorMessages);
+        return ['file' => $file, 'valid' => false, 'messages' => $errorMessages];
     }
 
     private function display(SymfonyStyle $io, array $files)
@@ -193,7 +193,7 @@ private function getFiles($fileOrDirectory)
         }
 
         foreach ($this->getDirectoryIterator($fileOrDirectory) as $file) {
-            if (!\in_array($file->getExtension(), array('xlf', 'xliff'))) {
+            if (!\in_array($file->getExtension(), ['xlf', 'xliff'])) {
                 continue;
             }
 
diff --git a/src/Symfony/Component/Translation/DataCollector/TranslationDataCollector.php b/src/Symfony/Component/Translation/DataCollector/TranslationDataCollector.php
index edd712dd1457..7aabcb24d559 100644
--- a/src/Symfony/Component/Translation/DataCollector/TranslationDataCollector.php
+++ b/src/Symfony/Component/Translation/DataCollector/TranslationDataCollector.php
@@ -57,7 +57,7 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
     }
 
     /**
@@ -65,7 +65,7 @@ public function reset()
      */
     public function getMessages()
     {
-        return isset($this->data['messages']) ? $this->data['messages'] : array();
+        return isset($this->data['messages']) ? $this->data['messages'] : [];
     }
 
     /**
@@ -99,7 +99,7 @@ public function getLocale()
 
     public function getFallbackLocales()
     {
-        return (isset($this->data['fallback_locales']) && \count($this->data['fallback_locales']) > 0) ? $this->data['fallback_locales'] : array();
+        return (isset($this->data['fallback_locales']) && \count($this->data['fallback_locales']) > 0) ? $this->data['fallback_locales'] : [];
     }
 
     /**
@@ -112,13 +112,13 @@ public function getName()
 
     private function sanitizeCollectedMessages($messages)
     {
-        $result = array();
+        $result = [];
         foreach ($messages as $key => $message) {
             $messageId = $message['locale'].$message['domain'].$message['id'];
 
             if (!isset($result[$messageId])) {
                 $message['count'] = 1;
-                $message['parameters'] = !empty($message['parameters']) ? array($message['parameters']) : array();
+                $message['parameters'] = !empty($message['parameters']) ? [$message['parameters']] : [];
                 $messages[$key]['translation'] = $this->sanitizeString($message['translation']);
                 $result[$messageId] = $message;
             } else {
@@ -137,11 +137,11 @@ private function sanitizeCollectedMessages($messages)
 
     private function computeCount($messages)
     {
-        $count = array(
+        $count = [
             DataCollectorTranslator::MESSAGE_DEFINED => 0,
             DataCollectorTranslator::MESSAGE_MISSING => 0,
             DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK => 0,
-        );
+        ];
 
         foreach ($messages as $message) {
             ++$count[$message['state']];
diff --git a/src/Symfony/Component/Translation/DataCollectorTranslator.php b/src/Symfony/Component/Translation/DataCollectorTranslator.php
index 00147bcf37f8..6f826dfaa6ff 100644
--- a/src/Symfony/Component/Translation/DataCollectorTranslator.php
+++ b/src/Symfony/Component/Translation/DataCollectorTranslator.php
@@ -27,7 +27,7 @@ class DataCollectorTranslator implements TranslatorInterface, TranslatorBagInter
      */
     private $translator;
 
-    private $messages = array();
+    private $messages = [];
 
     /**
      * @param TranslatorInterface $translator The translator must implement TranslatorBagInterface
@@ -44,7 +44,7 @@ public function __construct(TranslatorInterface $translator)
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         $trans = $this->translator->trans($id, $parameters, $domain, $locale);
         $this->collectMessage($locale, $domain, $id, $trans, $parameters);
@@ -55,7 +55,7 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
     /**
      * {@inheritdoc}
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         $trans = $this->translator->transChoice($id, $number, $parameters, $domain, $locale);
         $this->collectMessage($locale, $domain, $id, $trans, $parameters, $number);
@@ -98,7 +98,7 @@ public function getFallbackLocales()
             return $this->translator->getFallbackLocales();
         }
 
-        return array();
+        return [];
     }
 
     /**
@@ -106,7 +106,7 @@ public function getFallbackLocales()
      */
     public function __call($method, $args)
     {
-        return \call_user_func_array(array($this->translator, $method), $args);
+        return \call_user_func_array([$this->translator, $method], $args);
     }
 
     /**
@@ -125,7 +125,7 @@ public function getCollectedMessages()
      * @param array|null  $parameters
      * @param int|null    $number
      */
-    private function collectMessage($locale, $domain, $id, $translation, $parameters = array(), $number = null)
+    private function collectMessage($locale, $domain, $id, $translation, $parameters = [], $number = null)
     {
         if (null === $domain) {
             $domain = 'messages';
@@ -152,7 +152,7 @@ private function collectMessage($locale, $domain, $id, $translation, $parameters
             $state = self::MESSAGE_MISSING;
         }
 
-        $this->messages[] = array(
+        $this->messages[] = [
             'locale' => $locale,
             'domain' => $domain,
             'id' => $id,
@@ -160,6 +160,6 @@ private function collectMessage($locale, $domain, $id, $translation, $parameters
             'parameters' => $parameters,
             'transChoiceNumber' => $number,
             'state' => $state,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Translation/DependencyInjection/TranslationDumperPass.php b/src/Symfony/Component/Translation/DependencyInjection/TranslationDumperPass.php
index 92bac5be2f57..4656d667a05a 100644
--- a/src/Symfony/Component/Translation/DependencyInjection/TranslationDumperPass.php
+++ b/src/Symfony/Component/Translation/DependencyInjection/TranslationDumperPass.php
@@ -38,7 +38,7 @@ public function process(ContainerBuilder $container)
         $definition = $container->getDefinition($this->writerServiceId);
 
         foreach ($container->findTaggedServiceIds($this->dumperTag, true) as $id => $attributes) {
-            $definition->addMethodCall('addDumper', array($attributes[0]['alias'], new Reference($id)));
+            $definition->addMethodCall('addDumper', [$attributes[0]['alias'], new Reference($id)]);
         }
     }
 }
diff --git a/src/Symfony/Component/Translation/DependencyInjection/TranslationExtractorPass.php b/src/Symfony/Component/Translation/DependencyInjection/TranslationExtractorPass.php
index 4014d499cce6..bb4c5dca70d3 100644
--- a/src/Symfony/Component/Translation/DependencyInjection/TranslationExtractorPass.php
+++ b/src/Symfony/Component/Translation/DependencyInjection/TranslationExtractorPass.php
@@ -43,7 +43,7 @@ public function process(ContainerBuilder $container)
                 throw new RuntimeException(sprintf('The alias for the tag "translation.extractor" of service "%s" must be set.', $id));
             }
 
-            $definition->addMethodCall('addExtractor', array($attributes[0]['alias'], new Reference($id)));
+            $definition->addMethodCall('addExtractor', [$attributes[0]['alias'], new Reference($id)]);
         }
     }
 }
diff --git a/src/Symfony/Component/Translation/DependencyInjection/TranslatorPass.php b/src/Symfony/Component/Translation/DependencyInjection/TranslatorPass.php
index 2d50715ffb35..373a556ea471 100644
--- a/src/Symfony/Component/Translation/DependencyInjection/TranslatorPass.php
+++ b/src/Symfony/Component/Translation/DependencyInjection/TranslatorPass.php
@@ -43,8 +43,8 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $loaders = array();
-        $loaderRefs = array();
+        $loaders = [];
+        $loaderRefs = [];
         foreach ($container->findTaggedServiceIds($this->loaderTag, true) as $id => $attributes) {
             $loaderRefs[$id] = new Reference($id);
             $loaders[$id][] = $attributes[0]['alias'];
@@ -57,7 +57,7 @@ public function process(ContainerBuilder $container)
             $definition = $container->getDefinition($this->readerServiceId);
             foreach ($loaders as $id => $formats) {
                 foreach ($formats as $format) {
-                    $definition->addMethodCall('addLoader', array($format, $loaderRefs[$id]));
+                    $definition->addMethodCall('addLoader', [$format, $loaderRefs[$id]]);
                 }
             }
         }
@@ -68,7 +68,7 @@ public function process(ContainerBuilder $container)
                 $definition = $container->getDefinition('translation.reader');
                 foreach ($loaders as $id => $formats) {
                     foreach ($formats as $format) {
-                        $definition->addMethodCall('addLoader', array($format, $loaderRefs[$id]));
+                        $definition->addMethodCall('addLoader', [$format, $loaderRefs[$id]]);
                     }
                 }
             }
diff --git a/src/Symfony/Component/Translation/Dumper/CsvFileDumper.php b/src/Symfony/Component/Translation/Dumper/CsvFileDumper.php
index 0880528dc9b0..bfa8db61adef 100644
--- a/src/Symfony/Component/Translation/Dumper/CsvFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/CsvFileDumper.php
@@ -26,12 +26,12 @@ class CsvFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         $handle = fopen('php://memory', 'r+b');
 
         foreach ($messages->all($domain) as $source => $target) {
-            fputcsv($handle, array($source, $target), $this->delimiter, $this->enclosure);
+            fputcsv($handle, [$source, $target], $this->delimiter, $this->enclosure);
         }
 
         rewind($handle);
diff --git a/src/Symfony/Component/Translation/Dumper/DumperInterface.php b/src/Symfony/Component/Translation/Dumper/DumperInterface.php
index cebc65ed89d9..9965e8091f86 100644
--- a/src/Symfony/Component/Translation/Dumper/DumperInterface.php
+++ b/src/Symfony/Component/Translation/Dumper/DumperInterface.php
@@ -27,5 +27,5 @@ interface DumperInterface
      * @param MessageCatalogue $messages The message catalogue
      * @param array            $options  Options that are used by the dumper
      */
-    public function dump(MessageCatalogue $messages, $options = array());
+    public function dump(MessageCatalogue $messages, $options = []);
 }
diff --git a/src/Symfony/Component/Translation/Dumper/FileDumper.php b/src/Symfony/Component/Translation/Dumper/FileDumper.php
index f81f79c3c946..20d9e5521252 100644
--- a/src/Symfony/Component/Translation/Dumper/FileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/FileDumper.php
@@ -63,7 +63,7 @@ public function setBackup($backup)
     /**
      * {@inheritdoc}
      */
-    public function dump(MessageCatalogue $messages, $options = array())
+    public function dump(MessageCatalogue $messages, $options = [])
     {
         if (!array_key_exists('path', $options)) {
             throw new InvalidArgumentException('The file dumper needs a path option.');
@@ -98,7 +98,7 @@ public function dump(MessageCatalogue $messages, $options = array())
      *
      * @return string representation
      */
-    abstract public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array());
+    abstract public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = []);
 
     /**
      * Gets the file extension of the dumper.
@@ -117,10 +117,10 @@ abstract protected function getExtension();
      */
     private function getRelativePath($domain, $locale)
     {
-        return strtr($this->relativePathTemplate, array(
+        return strtr($this->relativePathTemplate, [
             '%domain%' => $domain,
             '%locale%' => $locale,
             '%extension%' => $this->getExtension(),
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Translation/Dumper/IcuResFileDumper.php b/src/Symfony/Component/Translation/Dumper/IcuResFileDumper.php
index efa9d7fee6be..48d0befdf941 100644
--- a/src/Symfony/Component/Translation/Dumper/IcuResFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/IcuResFileDumper.php
@@ -28,7 +28,7 @@ class IcuResFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         $data = $indexes = $resources = '';
 
diff --git a/src/Symfony/Component/Translation/Dumper/IniFileDumper.php b/src/Symfony/Component/Translation/Dumper/IniFileDumper.php
index 9ed3754037fb..45ff9614b146 100644
--- a/src/Symfony/Component/Translation/Dumper/IniFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/IniFileDumper.php
@@ -23,7 +23,7 @@ class IniFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         $output = '';
 
diff --git a/src/Symfony/Component/Translation/Dumper/JsonFileDumper.php b/src/Symfony/Component/Translation/Dumper/JsonFileDumper.php
index 11fe13d0e794..3ee446dc7318 100644
--- a/src/Symfony/Component/Translation/Dumper/JsonFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/JsonFileDumper.php
@@ -23,7 +23,7 @@ class JsonFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         if (isset($options['json_encoding'])) {
             $flags = $options['json_encoding'];
diff --git a/src/Symfony/Component/Translation/Dumper/MoFileDumper.php b/src/Symfony/Component/Translation/Dumper/MoFileDumper.php
index 32ed0ac26805..27be16d573f4 100644
--- a/src/Symfony/Component/Translation/Dumper/MoFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/MoFileDumper.php
@@ -24,20 +24,20 @@ class MoFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         $sources = $targets = $sourceOffsets = $targetOffsets = '';
-        $offsets = array();
+        $offsets = [];
         $size = 0;
 
         foreach ($messages->all($domain) as $source => $target) {
-            $offsets[] = array_map('strlen', array($sources, $source, $targets, $target));
+            $offsets[] = array_map('strlen', [$sources, $source, $targets, $target]);
             $sources .= "\0".$source;
             $targets .= "\0".$target;
             ++$size;
         }
 
-        $header = array(
+        $header = [
             'magicNumber' => MoFileLoader::MO_LITTLE_ENDIAN_MAGIC,
             'formatRevision' => 0,
             'count' => $size,
@@ -45,7 +45,7 @@ public function formatCatalogue(MessageCatalogue $messages, $domain, array $opti
             'offsetTranslated' => MoFileLoader::MO_HEADER_SIZE + (8 * $size),
             'sizeHashes' => 0,
             'offsetHashes' => MoFileLoader::MO_HEADER_SIZE + (16 * $size),
-        );
+        ];
 
         $sourcesSize = \strlen($sources);
         $sourcesStart = $header['offsetHashes'] + 1;
@@ -57,7 +57,7 @@ public function formatCatalogue(MessageCatalogue $messages, $domain, array $opti
                           .$this->writeLong($offset[2] + $sourcesStart + $sourcesSize);
         }
 
-        $output = implode('', array_map(array($this, 'writeLong'), $header))
+        $output = implode('', array_map([$this, 'writeLong'], $header))
                .$sourceOffsets
                .$targetOffsets
                .$sources
diff --git a/src/Symfony/Component/Translation/Dumper/PhpFileDumper.php b/src/Symfony/Component/Translation/Dumper/PhpFileDumper.php
index c7c37aac9232..e77afc2fbfde 100644
--- a/src/Symfony/Component/Translation/Dumper/PhpFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/PhpFileDumper.php
@@ -23,7 +23,7 @@ class PhpFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         return "<?php\n\nreturn ".var_export($messages->all($domain), true).";\n";
     }
diff --git a/src/Symfony/Component/Translation/Dumper/PoFileDumper.php b/src/Symfony/Component/Translation/Dumper/PoFileDumper.php
index ed4418b1489e..e9673b6d2990 100644
--- a/src/Symfony/Component/Translation/Dumper/PoFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/PoFileDumper.php
@@ -23,7 +23,7 @@ class PoFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         $output = 'msgid ""'."\n";
         $output .= 'msgstr ""'."\n";
diff --git a/src/Symfony/Component/Translation/Dumper/QtFileDumper.php b/src/Symfony/Component/Translation/Dumper/QtFileDumper.php
index a9073f26df47..ec93f92e4a1f 100644
--- a/src/Symfony/Component/Translation/Dumper/QtFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/QtFileDumper.php
@@ -23,7 +23,7 @@ class QtFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         $dom = new \DOMDocument('1.0', 'utf-8');
         $dom->formatOutput = true;
diff --git a/src/Symfony/Component/Translation/Dumper/XliffFileDumper.php b/src/Symfony/Component/Translation/Dumper/XliffFileDumper.php
index e714463c9f0e..a26d94987e88 100644
--- a/src/Symfony/Component/Translation/Dumper/XliffFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/XliffFileDumper.php
@@ -24,7 +24,7 @@ class XliffFileDumper extends FileDumper
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         $xliffVersion = '1.2';
         if (array_key_exists('xliff_version', $options)) {
@@ -55,9 +55,9 @@ protected function getExtension()
         return 'xlf';
     }
 
-    private function dumpXliff1($defaultLocale, MessageCatalogue $messages, $domain, array $options = array())
+    private function dumpXliff1($defaultLocale, MessageCatalogue $messages, $domain, array $options = [])
     {
-        $toolInfo = array('tool-id' => 'symfony', 'tool-name' => 'Symfony');
+        $toolInfo = ['tool-id' => 'symfony', 'tool-name' => 'Symfony'];
         if (array_key_exists('tool_info', $options)) {
             $toolInfo = array_merge($toolInfo, $options['tool_info']);
         }
@@ -129,7 +129,7 @@ private function dumpXliff1($defaultLocale, MessageCatalogue $messages, $domain,
         return $dom->saveXML();
     }
 
-    private function dumpXliff2($defaultLocale, MessageCatalogue $messages, $domain, array $options = array())
+    private function dumpXliff2($defaultLocale, MessageCatalogue $messages, $domain, array $options = [])
     {
         $dom = new \DOMDocument('1.0', 'utf-8');
         $dom->formatOutput = true;
diff --git a/src/Symfony/Component/Translation/Dumper/YamlFileDumper.php b/src/Symfony/Component/Translation/Dumper/YamlFileDumper.php
index aab6ad9b234f..f7e1bcb80b9b 100644
--- a/src/Symfony/Component/Translation/Dumper/YamlFileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/YamlFileDumper.php
@@ -33,7 +33,7 @@ public function __construct(/**string */$extension = 'yml')
     /**
      * {@inheritdoc}
      */
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         if (!class_exists('Symfony\Component\Yaml\Yaml')) {
             throw new LogicException('Dumping translations in the YAML format requires the Symfony Yaml component.');
diff --git a/src/Symfony/Component/Translation/Extractor/AbstractFileExtractor.php b/src/Symfony/Component/Translation/Extractor/AbstractFileExtractor.php
index 184102236e09..08a27fb07c98 100644
--- a/src/Symfony/Component/Translation/Extractor/AbstractFileExtractor.php
+++ b/src/Symfony/Component/Translation/Extractor/AbstractFileExtractor.php
@@ -28,14 +28,14 @@ abstract class AbstractFileExtractor
     protected function extractFiles($resource)
     {
         if (\is_array($resource) || $resource instanceof \Traversable) {
-            $files = array();
+            $files = [];
             foreach ($resource as $file) {
                 if ($this->canBeExtracted($file)) {
                     $files[] = $this->toSplFileInfo($file);
                 }
             }
         } elseif (is_file($resource)) {
-            $files = $this->canBeExtracted($resource) ? array($this->toSplFileInfo($resource)) : array();
+            $files = $this->canBeExtracted($resource) ? [$this->toSplFileInfo($resource)] : [];
         } else {
             $files = $this->extractFromDirectory($resource);
         }
diff --git a/src/Symfony/Component/Translation/Extractor/ChainExtractor.php b/src/Symfony/Component/Translation/Extractor/ChainExtractor.php
index 50e3c84579f2..69ee2dfc39e6 100644
--- a/src/Symfony/Component/Translation/Extractor/ChainExtractor.php
+++ b/src/Symfony/Component/Translation/Extractor/ChainExtractor.php
@@ -25,7 +25,7 @@ class ChainExtractor implements ExtractorInterface
      *
      * @var ExtractorInterface[]
      */
-    private $extractors = array();
+    private $extractors = [];
 
     /**
      * Adds a loader to the translation extractor.
diff --git a/src/Symfony/Component/Translation/Extractor/PhpExtractor.php b/src/Symfony/Component/Translation/Extractor/PhpExtractor.php
index ce62621238df..bf7da431a7f1 100644
--- a/src/Symfony/Component/Translation/Extractor/PhpExtractor.php
+++ b/src/Symfony/Component/Translation/Extractor/PhpExtractor.php
@@ -37,8 +37,8 @@ class PhpExtractor extends AbstractFileExtractor implements ExtractorInterface
      *
      * @var array
      */
-    protected $sequences = array(
-        array(
+    protected $sequences = [
+        [
             '->',
             'trans',
             '(',
@@ -47,8 +47,8 @@ class PhpExtractor extends AbstractFileExtractor implements ExtractorInterface
             self::METHOD_ARGUMENTS_TOKEN,
             ',',
             self::DOMAIN_TOKEN,
-        ),
-        array(
+        ],
+        [
             '->',
             'transChoice',
             '(',
@@ -59,20 +59,20 @@ class PhpExtractor extends AbstractFileExtractor implements ExtractorInterface
             self::METHOD_ARGUMENTS_TOKEN,
             ',',
10000

             self::DOMAIN_TOKEN,
-        ),
-        array(
+        ],
+        [
             '->',
             'trans',
             '(',
             self::MESSAGE_TOKEN,
-        ),
-        array(
+        ],
+        [
             '->',
             'transChoice',
             '(',
             self::MESSAGE_TOKEN,
-        ),
-    );
+        ],
+    ];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/Translation/Extractor/PhpStringTokenParser.php b/src/Symfony/Component/Translation/Extractor/PhpStringTokenParser.php
index e8094e6c08ab..8a8ccb1f1aae 100644
--- a/src/Symfony/Component/Translation/Extractor/PhpStringTokenParser.php
+++ b/src/Symfony/Component/Translation/Extractor/PhpStringTokenParser.php
@@ -49,7 +49,7 @@
 
 class PhpStringTokenParser
 {
-    protected static $replacements = array(
+    protected static $replacements = [
         '\\' => '\\',
         '$' => '$',
         'n' => "\n",
@@ -58,7 +58,7 @@ class PhpStringTokenParser
         'f' => "\f",
         'v' => "\v",
         'e' => "\x1B",
-    );
+    ];
 
     /**
      * Parses a string token.
@@ -76,8 +76,8 @@ public static function parse($str)
 
         if ('\'' === $str[$bLength]) {
             return str_replace(
-                array('\\\\', '\\\''),
-                array('\\', '\''),
+                ['\\\\', '\\\''],
+                ['\\', '\''],
                 substr($str, $bLength + 1, -1)
             );
         } else {
@@ -101,7 +101,7 @@ public static function parseEscapeSequences($str, $quote)
 
         return preg_replace_callback(
             '~\\\\([\\\\$nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3})~',
-            array(__CLASS__, 'parseCallback'),
+            [__CLASS__, 'parseCallback'],
             $str
         );
     }
diff --git a/src/Symfony/Component/Translation/Formatter/ChoiceMessageFormatterInterface.php b/src/Symfony/Component/Translation/Formatter/ChoiceMessageFormatterInterface.php
index 92acbcafe203..027b2eb5ba4e 100644
--- a/src/Symfony/Component/Translation/Formatter/ChoiceMessageFormatterInterface.php
+++ b/src/Symfony/Component/Translation/Formatter/ChoiceMessageFormatterInterface.php
@@ -26,5 +26,5 @@ interface ChoiceMessageFormatterInterface
      *
      * @return string
      */
-    public function choiceFormat($message, $number, $locale, array $parameters = array());
+    public function choiceFormat($message, $number, $locale, array $parameters = []);
 }
diff --git a/src/Symfony/Component/Translation/Formatter/MessageFormatter.php b/src/Symfony/Component/Translation/Formatter/MessageFormatter.php
index e174be36c3a4..f7204c3b0f0c 100644
--- a/src/Symfony/Component/Translation/Formatter/MessageFormatter.php
+++ b/src/Symfony/Component/Translation/Formatter/MessageFormatter.php
@@ -31,7 +31,7 @@ public function __construct(MessageSelector $selector = null)
     /**
      * {@inheritdoc}
      */
-    public function format($message, $locale, array $parameters = array())
+    public function format($message, $locale, array $parameters = [])
     {
         return strtr($message, $parameters);
     }
@@ -39,9 +39,9 @@ public function format($message, $locale, array $parameters = array())
     /**
      * {@inheritdoc}
      */
-    public function choiceFormat($message, $number, $locale, array $parameters = array())
+    public function choiceFormat($message, $number, $locale, array $parameters = [])
     {
-        $parameters = array_merge(array('%count%' => $number), $parameters);
+        $parameters = array_merge(['%count%' => $number], $parameters);
 
         return $this->format($this->selector->choose($message, (int) $number, $locale), $locale, $parameters);
     }
diff --git a/src/Symfony/Component/Translation/Formatter/MessageFormatterInterface.php b/src/Symfony/Component/Translation/Formatter/MessageFormatterInterface.php
index 86937fb2f085..370c055866c0 100644
--- a/src/Symfony/Component/Translation/Formatter/MessageFormatterInterface.php
+++ b/src/Symfony/Component/Translation/Formatter/MessageFormatterInterface.php
@@ -26,5 +26,5 @@ interface MessageFormatterInterface
      *
      * @return string
      */
-    public function format($message, $locale, array $parameters = array());
+    public function format($message, $locale, array $parameters = []);
 }
diff --git a/src/Symfony/Component/Translation/IdentityTranslator.php b/src/Symfony/Component/Translation/IdentityTranslator.php
index 82b247015bfe..2d90509d88b5 100644
--- a/src/Symfony/Component/Translation/IdentityTranslator.php
+++ b/src/Symfony/Component/Translation/IdentityTranslator.php
@@ -48,7 +48,7 @@ public function getLocale()
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         return strtr((string) $id, $parameters);
     }
@@ -56,7 +56,7 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
     /**
      * {@inheritdoc}
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         return strtr($this->selector->choose((string) $id, (int) $number, $locale ?: $this->getLocale()), $parameters);
     }
diff --git a/src/Symfony/Component/Translation/Loader/CsvFileLoader.php b/src/Symfony/Component/Translation/Loader/CsvFileLoader.php
index 8a763e725d6d..18cc83ed686c 100644
--- a/src/Symfony/Component/Translation/Loader/CsvFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/CsvFileLoader.php
@@ -29,7 +29,7 @@ class CsvFileLoader extends FileLoader
      */
     protected function loadResource($resource)
     {
-        $messages = array();
+        $messages = [];
 
         try {
             $file = new \SplFileObject($resource, 'rb');
diff --git a/src/Symfony/Component/Translation/Loader/FileLoader.php b/src/Symfony/Component/Translation/Loader/FileLoader.php
index 9a02f5250617..7ec54a3c874f 100644
--- a/src/Symfony/Component/Translation/Loader/FileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/FileLoader.php
@@ -37,7 +37,7 @@ public function load($resource, $locale, $domain = 'messages')
 
         // empty resource
         if (null === $messages) {
-            $messages = array();
+            $messages = [];
         }
 
         // not an array
diff --git a/src/Symfony/Component/Translation/Loader/IcuResFileLoader.php b/src/Symfony/Component/Translation/Loader/IcuResFileLoader.php
index fd2d1e4d3196..b59c021469e6 100644
--- a/src/Symfony/Component/Translation/Loader/IcuResFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/IcuResFileLoader.php
@@ -76,7 +76,7 @@ public function load($resource, $locale, $domain = 'messages')
      *
      * @return array the flattened ResourceBundle
      */
-    protected function flatten(\ResourceBundle $rb, array &$messages = array(), $path = null)
+    protected function flatten(\ResourceBundle $rb, array &$messages = [], $path = null)
     {
         foreach ($rb as $key => $value) {
             $nodePath = $path ? $path.'.'.$key : $key;
diff --git a/src/Symfony/Component/Translation/Loader/JsonFileLoader.php b/src/Symfony/Component/Translation/Loader/JsonFileLoader.php
index ce4e91ff4fbe..526721277d76 100644
--- a/src/Symfony/Component/Translation/Loader/JsonFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/JsonFileLoader.php
@@ -25,7 +25,7 @@ class JsonFileLoader extends FileLoader
      */
     protected function loadResource($resource)
     {
-        $messages = array();
+        $messages = [];
         if ($data = file_get_contents($resource)) {
             $messages = json_decode($data, true);
 
diff --git a/src/Symfony/Component/Translation/Loader/MoFileLoader.php b/src/Symfony/Component/Translation/Loader/MoFileLoader.php
index 93ecffa66550..74d2b2f4411d 100644
--- a/src/Symfony/Component/Translation/Loader/MoFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/MoFileLoader.php
@@ -71,7 +71,7 @@ protected function loadResource($resource)
         // offsetHashes
         $this->readLong($stream, $isBigEndian);
 
-        $messages = array();
+        $messages = [];
 
         for ($i = 0; $i < $count; ++$i) {
             $pluralId = null;
@@ -108,13 +108,13 @@ protected function loadResource($resource)
                 $translated = explode("\000", $translated);
             }
 
-            $ids = array('singular' => $singularId, 'plural' => $pluralId);
+            $ids = ['singular' => $singularId, 'plural' => $pluralId];
             $item = compact('ids', 'translated');
 
             if (\is_array($item['translated'])) {
                 $messages[$item['ids']['singular']] = stripcslashes($item['translated'][0]);
                 if (isset($item['ids']['plural'])) {
-                    $plurals = array();
+                    $plurals = [];
                     foreach ($item['translated'] as $plural => $translated) {
                         $plurals[] = sprintf('{%d} %s', $plural, $translated);
                     }
diff --git a/src/Symfony/Component/Translation/Loader/PoFileLoader.php b/src/Symfony/Component/Translation/Loader/PoFileLoader.php
index 066168dc71d9..1412a786a79b 100644
--- a/src/Symfony/Component/Translation/Loader/PoFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/PoFileLoader.php
@@ -64,14 +64,14 @@ protected function loadResource($resource)
     {
         $stream = fopen($resource, 'r');
 
-        $defaults = array(
-            'ids' => array(),
+        $defaults = [
+            'ids' => [],
             'translated' => null,
-        );
+        ];
 
-        $messages = array();
+        $messages = [];
         $item = $defaults;
-        $flags = array();
+        $flags = [];
 
         while ($line = fgets($stream)) {
             $line = trim($line);
@@ -82,7 +82,7 @@ protected function loadResource($resource)
                     $this->addMessage($messages, $item);
                 }
                 $item = $defaults;
-                $flags = array();
+                $flags = [];
             } elseif ('#,' === substr($line, 0, 2)) {
                 $flags = array_map('trim', explode(',', substr($line, 2)));
             } elseif ('msgid "' === substr($line, 0, 7)) {
diff --git a/src/Symfony/Component/Translation/Loader/XliffFileLoader.php b/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
index 11a9ce4d4d74..e6750826237d 100644
--- a/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
@@ -95,13 +95,13 @@ private function extractXliff1(\DOMDocument $dom, MessageCatalogue $catalogue, $
 
             $catalogue->set((string) $source, $target, $domain);
 
-            $metadata = array();
+            $metadata = [];
             if ($notes = $this->parseNotesMetadata($translation->note, $encoding)) {
                 $metadata['notes'] = $notes;
             }
 
             if (isset($translation->target) && $translation->target->attributes()) {
-                $metadata['target-attributes'] = array();
+                $metadata['target-attributes'] = [];
                 foreach ($translation->target->attributes() as $key => $value) {
                     $metadata['target-attributes'][$key] = (string) $value;
                 }
@@ -137,18 +137,18 @@ private function extractXliff2(\DOMDocument $dom, MessageCatalogue $catalogue, $
 
                 $catalogue->set((string) $source, $target, $domain);
 
-                $metadata = array();
+                $metadata = [];
                 if (isset($segment->target) && $segment->target->attributes()) {
-                    $metadata['target-attributes'] = array();
+                    $metadata['target-attributes'] = [];
                     foreach ($segment->target->attributes() as $key => $value) {
                         $metadata['target-attributes'][$key] = (string) $value;
                     }
                 }
 
                 if (isset($unit->notes)) {
-                    $metadata['notes'] = array();
+                    $metadata['notes'] = [];
                     foreach ($unit->notes->note as $noteNode) {
-                        $note = array();
+                        $note = [];
                         foreach ($noteNode->attributes() as $key => $value) {
                             $note[$key] = (string) $value;
                         }
@@ -262,7 +262,7 @@ private function fixXmlLocation($schemaSource, $xmlUri)
      */
     private function getXmlErrors($internalErrors)
     {
-        $errors = array();
+        $errors = [];
         foreach (libxml_get_errors() as $error) {
             $errors[] = sprintf('[%s %s] %s (in %s - line %d, column %d)',
                 LIBXML_ERR_WARNING == $error->level ? 'WARNING' : 'ERROR',
@@ -321,7 +321,7 @@ private function getVersionNumber(\DOMDocument $dom)
      */
     private function parseNotesMetadata(\SimpleXMLElement $noteElement = null, $encoding = null)
     {
-        $notes = array();
+        $notes = [];
 
         if (null === $noteElement) {
             return $notes;
@@ -330,7 +330,7 @@ private function parseNotesMetadata(\SimpleXMLElement $noteElement = null, $enco
         /** @var \SimpleXMLElement $xmlNote */
         foreach ($noteElement as $xmlNote) {
             $noteAttributes = $xmlNote->attributes();
-            $note = array('content' => $this->utf8ToCharset((string) $xmlNote, $encoding));
+            $note = ['content' => $this->utf8ToCharset((string) $xmlNote, $encoding)];
             if (isset($noteAttributes['priority'])) {
                 $note['priority'] = (int) $noteAttributes['priority'];
             }
diff --git a/src/Symfony/Component/Translation/LoggingTranslator.php b/src/Symfony/Component/Translation/LoggingTranslator.php
index 7fedac913f7b..306776e007d3 100644
--- a/src/Symfony/Component/Translation/LoggingTranslator.php
+++ b/src/Symfony/Component/Translation/LoggingTranslator.php
@@ -43,7 +43,7 @@ public function __construct(TranslatorInterface $translator, LoggerInterface $lo
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         $trans = $this->translator->trans($id, $parameters, $domain, $locale);
         $this->log($id, $domain, $locale);
@@ -54,7 +54,7 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
     /**
      * {@inheritdoc}
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         $trans = $this->translator->transChoice($id, $number, $parameters, $domain, $locale);
         $this->log($id, $domain, $locale);
@@ -97,7 +97,7 @@ public function getFallbackLocales()
             return $this->translator->getFallbackLocales();
         }
 
-        return array();
+        return [];
     }
 
     /**
@@ -105,7 +105,7 @@ public function getFallbackLocales()
      */
     public function __call($method, $args)
     {
-        return \call_user_func_array(array($this->translator, $method), $args);
+        return \call_user_func_array([$this->translator, $method], $args);
     }
 
     /**
@@ -128,9 +128,9 @@ private function log($id, $domain, $locale)
         }
 
         if ($catalogue->has($id, $domain)) {
-            $this->logger->debug('Translation use fallback catalogue.', array('id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()));
+            $this->logger->debug('Translation use fallback catalogue.', ['id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()]);
         } else {
-            $this->logger->warning('Translation not found.', array('id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()));
+            $this->logger->warning('Translation not found.', ['id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()]);
         }
     }
 }
diff --git a/src/Symfony/Component/Translation/MessageCatalogue.php b/src/Symfony/Component/Translation/MessageCatalogue.php
index df917bbba9e3..73fdcfdc829f 100644
--- a/src/Symfony/Component/Translation/MessageCatalogue.php
+++ b/src/Symfony/Component/Translation/MessageCatalogue.php
@@ -19,9 +19,9 @@
  */
 class MessageCatalogue implements MessageCatalogueInterface, MetadataAwareInterface
 {
-    private $messages = array();
-    private $metadata = array();
-    private $resources = array();
+    private $messages = [];
+    private $metadata = [];
+    private $resources = [];
     private $locale;
     private $fallbackCatalogue;
     private $parent;
@@ -30,7 +30,7 @@ class MessageCatalogue implements MessageCatalogueInterface, MetadataAwareInterf
      * @param string $locale   The locale
      * @param array  $messages An array of messages classified by domain
      */
-    public function __construct($locale, array $messages = array())
+    public function __construct($locale, array $messages = [])
     {
         $this->locale = $locale;
         $this->messages = $messages;
@@ -61,7 +61,7 @@ public function all($domain = null)
             return $this->messages;
         }
 
-        return isset($this->messages[$domain]) ? $this->messages[$domain] : array();
+        return isset($this->messages[$domain]) ? $this->messages[$domain] : [];
     }
 
     /**
@@ -69,7 +69,7 @@ public function all($domain = null)
      */
     public function set($id, $translation, $domain = 'messages')
     {
-        $this->add(array($id => $translation), $domain);
+        $this->add([$id => $translation], $domain);
     }
 
     /**
@@ -117,7 +117,7 @@ public function get($id, $domain = 'messages')
      */
     public function replace($messages, $domain = 'messages')
     {
-        $this->messages[$domain] = array();
+        $this->messages[$domain] = [];
 
         $this->add($messages, $domain);
     }
@@ -247,7 +247,7 @@ public function setMetadata($key, $value, $domain = 'messages')
     public function deleteMetadata($key = '', $domain = 'messages')
     {
         if ('' == $domain) {
-            $this->metadata = array();
+            $this->metadata = [];
         } elseif ('' == $key) {
             unset($this->metadata[$domain]);
         } else {
diff --git a/src/Symfony/Component/Translation/MessageSelector.php b/src/Symfony/Component/Translation/MessageSelector.php
index 5de171c5f4a4..a7743ebae30e 100644
--- a/src/Symfony/Component/Translation/MessageSelector.php
+++ b/src/Symfony/Component/Translation/MessageSelector.php
@@ -49,15 +49,15 @@ class MessageSelector
      */
     public function choose($message, $number, $locale)
     {
-        $parts = array();
+        $parts = [];
         if (preg_match('/^\|++$/', $message)) {
             $parts = explode('|', $message);
         } elseif (preg_match_all('/(?:\|\||[^\|])++/', $message, $matches)) {
             $parts = $matches[0];
         }
 
-        $explicitRules = array();
-        $standardRules = array();
+        $explicitRules = [];
+        $standardRules = [];
         foreach ($parts as $part) {
             $part = trim(str_replace('||', '|', $part));
 
diff --git a/src/Symfony/Component/Translation/PluralizationRules.php b/src/Symfony/Component/Translation/PluralizationRules.php
index 3aca0ba96329..d369f5f3fabf 100644
--- a/src/Symfony/Component/Translation/PluralizationRules.php
+++ b/src/Symfony/Component/Translation/PluralizationRules.php
@@ -18,7 +18,7 @@
  */
 class PluralizationRules
 {
-    private static $rules = array();
+    private static $rules = [];
 
     /**
      * Returns the plural position to use for the given locale and number.
diff --git a/src/Symfony/Component/Translation/Reader/TranslationReader.php b/src/Symfony/Component/Translation/Reader/TranslationReader.php
index 948edec492e5..e4554f39b4ee 100644
--- a/src/Symfony/Component/Translation/Reader/TranslationReader.php
+++ b/src/Symfony/Component/Translation/Reader/TranslationReader.php
@@ -27,7 +27,7 @@ class TranslationReader implements TranslationReaderInterface
      *
      * @var array
      */
-    private $loaders = array();
+    private $loaders = [];
 
     /**
      * Adds a loader to the translation extractor.
diff --git a/src/Symfony/Component/Translation/Tests/Catalogue/AbstractOperationTest.php b/src/Symfony/Component/Translation/Tests/Catalogue/AbstractOperationTest.php
index 90cf4a5dc381..e39ef39ec51f 100644
--- a/src/Symfony/Component/Translation/Tests/Catalogue/AbstractOperationTest.php
+++ b/src/Symfony/Component/Translation/Tests/Catalogue/AbstractOperationTest.php
@@ -20,7 +20,7 @@ abstract class AbstractOperationTest extends TestCase
     public function testGetEmptyDomains()
     {
         $this->assertEquals(
-            array(),
+            [],
             $this->createOperation(
                 new MessageCatalogue('en'),
                 new MessageCatalogue('en')
@@ -31,10 +31,10 @@ public function testGetEmptyDomains()
     public function testGetMergedDomains()
     {
         $this->assertEquals(
-            array('a', 'b', 'c'),
+            ['a', 'b', 'c'],
             $this->createOperation(
-                new MessageCatalogue('en', array('a' => array(), 'b' => array())),
-                new MessageCatalogue('en', array('b' => array(), 'c' => array()))
+                new MessageCatalogue('en', ['a' => [], 'b' => []]),
+                new MessageCatalogue('en', ['b' => [], 'c' => []])
             )->getDomains()
         );
     }
@@ -51,9 +51,9 @@ public function testGetMessagesFromUnknownDomain()
     public function testGetEmptyMessages()
     {
         $this->assertEquals(
-            array(),
+            [],
             $this->createOperation(
-                new MessageCatalogue('en', array('a' => array())),
+                new MessageCatalogue('en', ['a' => []]),
                 new MessageCatalogue('en')
             )->getMessages('a')
         );
diff --git a/src/Symfony/Component/Translation/Tests/Catalogue/MergeOperationTest.php b/src/Symfony/Component/Translation/Tests/Catalogue/MergeOperationTest.php
index 8b51c15daec9..0dc68beb9baa 100644
--- a/src/Symfony/Component/Translation/Tests/Catalogue/MergeOperationTest.php
+++ b/src/Symfony/Component/Translation/Tests/Catalogue/MergeOperationTest.php
@@ -20,22 +20,22 @@ class MergeOperationTest extends AbstractOperationTest
     public function testGetMessagesFromSingleDomain()
     {
         $operation = $this->createOperation(
-            new MessageCatalogue('en', array('messages' => array('a' => 'old_a', 'b' => 'old_b'))),
-            new MessageCatalogue('en', array('messages' => array('a' => 'new_a', 'c' => 'new_c')))
+            new MessageCatalogue('en', ['messages' => ['a' => 'old_a', 'b' => 'old_b']]),
+            new MessageCatalogue('en', ['messages' => ['a' => 'new_a', 'c' => 'new_c']])
         );
 
         $this->assertEquals(
-            array('a' => 'old_a', 'b' => 'old_b', 'c' => 'new_c'),
+            ['a' => 'old_a', 'b' => 'old_b', 'c' => 'new_c'],
             $operation->getMessages('messages')
         );
 
         $this->assertEquals(
-            array('c' => 'new_c'),
+            ['c' => 'new_c'],
             $operation->getNewMessages('messages')
         );
 
         $this->assertEquals(
-            array(),
+            [],
             $operation->getObsoleteMessages('messages')
         );
     }
@@ -43,26 +43,26 @@ public function testGetMessagesFromSingleDomain()
     public function testGetResultFromSingleDomain()
     {
         $this->assertEquals(
-            new MessageCatalogue('en', array(
-                'messages' => array('a' => 'old_a', 'b' => 'old_b', 'c' => 'new_c'),
-            )),
+            new MessageCatalogue('en', [
+                'messages' => ['a' => 'old_a', 'b' => 'old_b', 'c' => 'new_c'],
+            ]),
             $this->createOperation(
-                new MessageCatalogue('en', array('messages' => array('a' => 'old_a', 'b' => 'old_b'))),
-                new MessageCatalogue('en', array('messages' => array('a' => 'new_a', 'c' => 'new_c')))
+                new MessageCatalogue('en', ['messages' => ['a' => 'old_a', 'b' => 'old_b']]),
+                new MessageCatalogue('en', ['messages' => ['a' => 'new_a', 'c' => 'new_c']])
             )->getResult()
         );
     }
 
     public function testGetResultWithMetadata()
     {
-        $leftCatalogue = new MessageCatalogue('en', array('messages' => array('a' => 'old_a', 'b' => 'old_b')));
+        $leftCatalogue = new MessageCatalogue('en', ['messages' => ['a' => 'old_a', 'b' => 'old_b']]);
         $leftCatalogue->setMetadata('a', 'foo', 'messages');
         $leftCatalogue->setMetadata('b', 'bar', 'messages');
-        $rightCatalogue = new MessageCatalogue('en', array('messages' => array('b' => 'new_b', 'c' => 'new_c')));
+        $rightCatalogue = new MessageCatalogue('en', ['messages' => ['b' => 'new_b', 'c' => 'new_c']]);
         $rightCatalogue->setMetadata('b', 'baz', 'messages');
         $rightCatalogue->setMetadata('c', 'qux', 'messages');
 
-        $mergedCatalogue = new MessageCatalogue('en', array('messages' => array('a' => 'old_a', 'b' => 'old_b', 'c' => 'new_c')));
+        $mergedCatalogue = new MessageCatalogue('en', ['messages' => ['a' => 'old_a', 'b' => 'old_b', 'c' => 'new_c']]);
         $mergedCatalogue->setMetadata('a', 'foo', 'messages');
         $mergedCatalogue->setMetadata('b', 'bar', 'messages');
         $mergedCatalogue->setMetadata('c', 'qux', 'messages');
diff --git a/src/Symfony/Component/Translation/Tests/Catalogue/TargetOperationTest.php b/src/Symfony/Component/Translation/Tests/Catalogue/TargetOperationTest.php
index 271d17fb8f31..8077ff095620 100644
--- a/src/Symfony/Component/Translation/Tests/Catalogue/TargetOperationTest.php
+++ b/src/Symfony/Component/Translation/Tests/Catalogue/TargetOperationTest.php
@@ -20,22 +20,22 @@ class TargetOperationTest extends AbstractOperationTest
     public function testGetMessagesFromSingleDomain()
     {
         $operation = $this->createOperation(
-            new MessageCatalogue('en', array('messages' => array('a' => 'old_a', 'b' => 'old_b'))),
-            new MessageCatalogue('en', array('messages' => array('a' => 'new_a', 'c' => 'new_c')))
+            new MessageCatalogue('en', ['messages' => ['a' => 'old_a', 'b' => 'old_b']]),
+            new MessageCatalogue('en', ['messages' => ['a' => 'new_a', 'c' => 'new_c']])
         );
 
         $this->assertEquals(
-            array('a' => 'old_a', 'c' => 'new_c'),
+            ['a' => 'old_a', 'c' => 'new_c'],
             $operation->getMessages('messages')
         );
 
         $this->assertEquals(
-            array('c' => 'new_c'),
+            ['c' => 'new_c'],
             $operation->getNewMessages('messages')
         );
 
         $this->assertEquals(
-            array('b' => 'old_b'),
+            ['b' => 'old_b'],
             $operation->getObsoleteMessages('messages')
         );
     }
@@ -43,26 +43,26 @@ public function testGetMessagesFromSingleDomain()
     public function testGetResultFromSingleDomain()
     {
         $this->assertEquals(
-            new MessageCatalogue('en', array(
-                'messages' => array('a' => 'old_a', 'c' => 'new_c'),
-            )),
+            new MessageCatalogue('en', [
+                'messages' => ['a' => 'old_a', 'c' => 'new_c'],
+            ]),
             $this->createOperation(
-                new MessageCatalogue('en', array('messages' => array('a' => 'old_a', 'b' => 'old_b'))),
-                new MessageCatalogue('en', array('messages' => array('a' => 'new_a', 'c' => 'new_c')))
+                new MessageCatalogue('en', ['messages' => ['a' => 'old_a', 'b' => 'old_b']]),
+                new MessageCatalogue('en', ['messages' => ['a' => 'new_a', 'c' => 'new_c']])
             )->getResult()
         );
     }
 
     public function testGetResultWithMetadata()
     {
-        $leftCatalogue = new MessageCatalogue('en', array('messages' => array('a' => 'old_a', 'b' => 'old_b')));
+        $leftCatalogue = new MessageCatalogue('en', ['messages' => ['a' => 'old_a', 'b' => 'old_b']]);
         $leftCatalogue->setMetadata('a', 'foo', 'messages');
         $leftCatalogue->setMetadata('b', 'bar', 'messages');
-        $rightCatalogue = new MessageCatalogue('en', array('messages' => array('b' => 'new_b', 'c' => 'new_c')));
+        $rightCatalogue = new MessageCatalogue('en', ['messages' => ['b' => 'new_b', 'c' => 'new_c']]);
         $rightCatalogue->setMetadata('b', 'baz', 'messages');
         $rightCatalogue->setMetadata('c', 'qux', 'messages');
 
-        $diffCatalogue = new MessageCatalogue('en', array('messages' => array('b' => 'old_b', 'c' => 'new_c')));
+        $diffCatalogue = new MessageCatalogue('en', ['messages' => ['b' => 'old_b', 'c' => 'new_c']]);
         $diffCatalogue->setMetadata('b', 'bar', 'messages');
         $diffCatalogue->setMetadata('c', 'qux', 'messages');
 
diff --git a/src/Symfony/Component/Translation/Tests/DataCollector/TranslationDataCollectorTest.php b/src/Symfony/Component/Translation/Tests/DataCollector/TranslationDataCollectorTest.php
index 6665eca49946..b4d350ef862e 100644
--- a/src/Symfony/Component/Translation/Tests/DataCollector/TranslationDataCollectorTest.php
+++ b/src/Symfony/Component/Translation/Tests/DataCollector/TranslationDataCollectorTest.php
@@ -27,7 +27,7 @@ protected function setUp()
     public function testCollectEmptyMessages()
     {
         $translator = $this->getTranslator();
-        $translator->expects($this->any())->method('getCollectedMessages')->will($this->returnValue(array()));
+        $translator->expects($this->any())->method('getCollectedMessages')->will($this->returnValue([]));
 
         $dataCollector = new TranslationDataCollector($translator);
         $dataCollector->lateCollect();
@@ -35,94 +35,94 @@ public function testCollectEmptyMessages()
         $this->assertEquals(0, $dataCollector->getCountMissings());
         $this->assertEquals(0, $dataCollector->getCountFallbacks());
         $this->assertEquals(0, $dataCollector->getCountDefines());
-        $this->assertEquals(array(), $dataCollector->getMessages()->getValue());
+        $this->assertEquals([], $dataCollector->getMessages()->getValue());
     }
 
     public function testCollect()
     {
-        $collectedMessages = array(
-            array(
+        $collectedMessages = [
+            [
                 'id' => 'foo',
                 'translation' => 'foo (en)',
                 'locale' => 'en',
                 'domain' => 'messages',
                 'state' => DataCollectorTranslator::MESSAGE_DEFINED,
-                'parameters' => array(),
+                'parameters' => [],
                 'transChoiceNumber' => null,
-            ),
-            array(
+            ],
+            [
                 'id' => 'bar',
                 'translation' => 'bar (fr)',
                 'locale' => 'fr',
                 'domain' => 'messages',
                 'state' => DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK,
-                'parameters' => array(),
+                'parameters' => [],
                 'transChoiceNumber' => null,
-            ),
-            array(
+            ],
+            [
                 'id' => 'choice',
                 'translation' => 'choice',
                 'locale' => 'en',
                 'domain' => 'messages',
                 'state' => DataCollectorTranslator::MESSAGE_MISSING,
-                'parameters' => array('%count%' => 3),
+                'parameters' => ['%count%' => 3],
                 'transChoiceNumber' => 3,
-            ),
-            array(
+            ],
+            [
                 'id' => 'choice',
                 'translation' => 'choice',
                 'locale' => 'en',
                 'domain' => 'messages',
                 'state' => DataCollectorTranslator::MESSAGE_MISSING,
-                'parameters' => array('%count%' => 3),
+                'parameters' => ['%count%' => 3],
                 'transChoiceNumber' => 3,
-            ),
-            array(
+            ],
+            [
                 'id' => 'choice',
                 'translation' => 'choice',
                 'locale' => 'en',
                 'domain' => 'messages',
                 'state' => DataCollectorTranslator::MESSAGE_MISSING,
-                'parameters' => array('%count%' => 4, '%foo%' => 'bar'),
+                'parameters' => ['%count%' => 4, '%foo%' => 'bar'],
                 'transChoiceNumber' => 4,
-            ),
-        );
-        $expectedMessages = array(
-            array(
+            ],
+        ];
+        $expectedMessages = [
+            [
                 'id' => 'foo',
                 'translation' => 'foo (en)',
                 'locale' => 'en',
                 'domain' => 'messages',
                 'state' => DataCollectorTranslator::MESSAGE_DEFINED,
                 'count' => 1,
-                'parameters' => array(),
+                'parameters' => [],
                 'transChoiceNumber' => null,
-            ),
-            array(
+            ],
+            [
                 'id' => 'bar',
                 'translation' => 'bar (fr)',
                 'locale' => 'fr',
                 'domain' => 'messages',
                 'state' => DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK,
                 'count' => 1,
-                'parameters' => array(),
+                'parameters' => [],
                 'transChoiceNumber' => null,
-            ),
-            array(
+            ],
+            [
                 'id' => 'choice',
                 'translation' => 'choice',
                 'locale' => 'en',
                 'domain' => 'messages',
                 'state' => DataCollectorTranslator::MESSAGE_MISSING,
                 'count' => 3,
-                'parameters' => array(
-                    array('%count%' => 3),
-                    array('%count%' => 3),
-                    array('%count%' => 4, '%foo%' => 'bar'),
-                ),
+                'parameters' => [
+                    ['%count%' => 3],
+                    ['%count%' => 3],
+                    ['%count%' => 4, '%foo%' => 'bar'],
+                ],
                 'transChoiceNumber' => 3,
-            ),
-        );
+            ],
+        ];
 
         $translator = $this->getTranslator();
         $translator->expects($this->any())->method('getCollectedMessages')->will($this->returnValue($collectedMessages));
diff --git a/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php b/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php
index 1cdd33b395f0..059d07464872 100644
--- a/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php
+++ b/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php
@@ -21,60 +21,60 @@ class DataCollectorTranslatorTest extends TestCase
     public function testCollectMessages()
     {
         $collector = $this->createCollector();
-        $collector->setFallbackLocales(array('fr', 'ru'));
+        $collector->setFallbackLocales(['fr', 'ru']);
 
         $collector->trans('foo');
         $collector->trans('bar');
         $collector->transChoice('choice', 0);
         $collector->trans('bar_ru');
-        $collector->trans('bar_ru', array('foo' => 'bar'));
+        $collector->trans('bar_ru', ['foo' => 'bar']);
 
-        $expectedMessages = array();
-        $expectedMessages[] = array(
+        $expectedMessages = [];
+        $expectedMessages[] = [
             'id' => 'foo',
             'translation' => 'foo (en)',
             'locale' => 'en',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_DEFINED,
-            'parameters' => array(),
+            'parameters' => [],
             'transChoiceNumber' => null,
-        );
-        $expectedMessages[] = array(
+        ];
+        $expectedMessages[] = [
             'id' => 'bar',
             'translation' => 'bar (fr)',
             'locale' => 'fr',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK,
-            'parameters' => array(),
+            'parameters' => [],
             'transChoiceNumber' => null,
-        );
-        $expectedMessages[] = array(
+        ];
+        $expectedMessages[] = [
             'id' => 'choice',
             'translation' => 'choice',
             'locale' => 'en',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_MISSING,
-            'parameters' => array(),
+            'parameters' => [],
             'transChoiceNumber' => 0,
-        );
-        $expectedMessages[] = array(
+        ];
+        $expectedMessages[] = [
             'id' => 'bar_ru',
             'translation' => 'bar (ru)',
             'locale' => 'ru',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK,
-            'parameters' => array(),
+            'parameters' => [],
             'transChoiceNumber' => null,
-        );
-        $expectedMessages[] = array(
+        ];
+        $expectedMessages[] = [
             'id' => 'bar_ru',
             'translation' => 'bar (ru)',
             'locale' => 'ru',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK,
-            'parameters' => array('foo' => 'bar'),
+            'parameters' => ['foo' => 'bar'],
             'transChoiceNumber' => null,
-        );
+        ];
 
         $this->assertEquals($expectedMessages, $collector->getCollectedMessages());
     }
@@ -83,9 +83,9 @@ private function createCollector()
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (en)'), 'en');
-        $translator->addResource('array', array('bar' => 'bar (fr)'), 'fr');
-        $translator->addResource('array', array('bar_ru' => 'bar (ru)'), 'ru');
+        $translator->addResource('array', ['foo' => 'foo (en)'], 'en');
+        $translator->addResource('array', ['bar' => 'bar (fr)'], 'fr');
+        $translator->addResource('array', ['bar_ru' => 'bar (ru)'], 'ru');
 
         return new DataCollectorTranslator($translator);
     }
diff --git a/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationDumperPassTest.php b/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationDumperPassTest.php
index 759bb0e97d3b..94769e9dae9e 100644
--- a/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationDumperPassTest.php
+++ b/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationDumperPassTest.php
@@ -23,12 +23,12 @@ public function testProcess()
         $container = new ContainerBuilder();
         $writerDefinition = $container->register('translation.writer');
         $container->register('foo.id')
-            ->addTag('translation.dumper', array('alias' => 'bar.alias'));
+            ->addTag('translation.dumper', ['alias' => 'bar.alias']);
 
         $translationDumperPass = new TranslationDumperPass();
         $translationDumperPass->process($container);
 
-        $this->assertEquals(array(array('addDumper', array('bar.alias', new Reference('foo.id')))), $writerDefinition->getMethodCalls());
+        $this->assertEquals([['addDumper', ['bar.alias', new Reference('foo.id')]]], $writerDefinition->getMethodCalls());
     }
 
     public function testProcessNoDefinitionFound()
diff --git a/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationExtractorPassTest.php b/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationExtractorPassTest.php
index 14d164d0ee3c..a638498b6bde 100644
--- a/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationExtractorPassTest.php
+++ b/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationExtractorPassTest.php
@@ -23,12 +23,12 @@ public function testProcess()
         $container = new ContainerBuilder();
         $extractorDefinition = $container->register('translation.extractor');
         $container->register('foo.id')
-            ->addTag('translation.extractor', array('alias' => 'bar.alias'));
+            ->addTag('translation.extractor', ['alias' => 'bar.alias']);
 
         $translationDumperPass = new TranslationExtractorPass();
         $translationDumperPass->process($container);
 
-        $this->assertEquals(array(array('addExtractor', array('bar.alias', new Reference('foo.id')))), $extractorDefinition->getMethodCalls());
+        $this->assertEquals([['addExtractor', ['bar.alias', new Reference('foo.id')]]], $extractorDefinition->getMethodCalls());
     }
 
     public function testProcessNoDefinitionFound()
@@ -56,7 +56,7 @@ public function testProcessMissingAlias()
         $container = new ContainerBuilder();
         $container->register('translation.extractor');
         $container->register('foo.id')
-            ->addTag('translation.extractor', array());
+            ->addTag('translation.extractor', []);
 
         $definition->expects($this->never())->method('addMethodCall');
 
diff --git a/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationPassTest.php b/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationPassTest.php
index 4c03aaca5700..96ec625026f6 100644
--- a/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationPassTest.php
+++ b/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationPassTest.php
@@ -23,12 +23,12 @@ class TranslationPassTest extends TestCase
     public function testValidCollector()
     {
         $loader = (new Definition())
-            ->addTag('translation.loader', array('alias' => 'xliff', 'legacy-alias' => 'xlf'));
+            ->addTag('translation.loader', ['alias' => 'xliff', 'legacy-alias' => 'xlf']);
 
         $reader = new Definition();
 
         $translator = (new Definition())
-            ->setArguments(array(null, null, null, null));
+            ->setArguments([null, null, null, null]);
 
         $container = new ContainerBuilder();
         $container->setDefinition('translator.default', $translator);
@@ -39,19 +39,19 @@ public function testValidCollector()
         $pass->process($container);
 
         $expectedReader = (new Definition())
-            ->addMethodCall('addLoader', array('xliff', new Reference('translation.xliff_loader')))
-            ->addMethodCall('addLoader', array('xlf', new Reference('translation.xliff_loader')))
+            ->addMethodCall('addLoader', ['xliff', new Reference('translation.xliff_loader')])
+            ->addMethodCall('addLoader', ['xlf', new Reference('translation.xliff_loader')])
         ;
         $this->assertEquals($expectedReader, $reader);
 
         $expectedLoader = (new Definition())
-            ->addTag('translation.loader', array('alias' => 'xliff', 'legacy-alias' => 'xlf'))
+            ->addTag('translation.loader', ['alias' => 'xliff', 'legacy-alias' => 'xlf'])
         ;
         $this->assertEquals($expectedLoader, $loader);
 
-        $this->assertSame(array('translation.xliff_loader' => array('xliff', 'xlf')), $translator->getArgument(3));
+        $this->assertSame(['translation.xliff_loader' => ['xliff', 'xlf']], $translator->getArgument(3));
 
-        $expected = array('translation.xliff_loader' => new ServiceClosureArgument(new Reference('translation.xliff_loader')));
+        $expected = ['translation.xliff_loader' => new ServiceClosureArgument(new Reference('translation.xliff_loader'))];
         $this->assertEquals($expected, $container->getDefinition((string) $translator->getArgument(0))->getArgument(0));
     }
 
@@ -66,13 +66,13 @@ public function testValidCollector()
     public function testValidCollectorWithDeprecatedTranslationLoader()
     {
         $loader = (new Definition())
-            ->addTag('translation.loader', array('alias' => 'xliff', 'legacy-alias' => 'xlf'));
+            ->addTag('translation.loader', ['alias' => 'xliff', 'legacy-alias' => 'xlf']);
 
         $legacyReader = new Definition();
         $reader = new Definition();
 
         $translator = (new Definition())
-            ->setArguments(array(null, null, null, null));
+            ->setArguments([null, null, null, null]);
 
         $container = new ContainerBuilder();
         $container->setDefinition('translator.default', $translator);
@@ -84,20 +84,20 @@ public function testValidCollectorWithDeprecatedTranslationLoader()
         $pass->process($container);
 
         $expectedReader = (new Definition())
-            ->addMethodCall('addLoader', array('xliff', new Reference('translation.xliff_loader')))
-            ->addMethodCall('addLoader', array('xlf', new Reference('translation.xliff_loader')))
+            ->addMethodCall('addLoader', ['xliff', new Reference('translation.xliff_loader')])
+            ->addMethodCall('addLoader', ['xlf', new Reference('translation.xliff_loader')])
         ;
         $this->assertEquals($expectedReader, $legacyReader);
         $this->assertEquals($expectedReader, $reader);
 
         $expectedLoader = (new Definition())
-            ->addTag('translation.loader', array('alias' => 'xliff', 'legacy-alias' => 'xlf'))
+            ->addTag('translation.loader', ['alias' => 'xliff', 'legacy-alias' => 'xlf'])
         ;
         $this->assertEquals($expectedLoader, $loader);
 
-        $this->assertSame(array('translation.xliff_loader' => array('xliff', 'xlf')), $translator->getArgument(3));
+        $this->assertSame(['translation.xliff_loader' => ['xliff', 'xlf']], $translator->getArgument(3));
 
-        $expected = array('translation.xliff_loader' => new ServiceClosureArgument(new Reference('translation.xliff_loader')));
+        $expected = ['translation.xliff_loader' => new ServiceClosureArgument(new Reference('translation.xliff_loader'))];
         $this->assertEquals($expected, $container->getDefinition((string) $translator->getArgument(0))->getArgument(0));
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/CsvFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/CsvFileDumperTest.php
index 9a7a059a4e82..0d1cf2c62865 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/CsvFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/CsvFileDumperTest.php
@@ -20,8 +20,8 @@ class CsvFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar', 'bar' => 'foo
-foo', 'foo;foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar', 'bar' => 'foo
+foo', 'foo;foo' => 'bar']);
 
         $dumper = new CsvFileDumper();
 
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
index bac567fd5fb7..df201461a7b8 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
@@ -22,10 +22,10 @@ public function testDump()
         $tempDir = sys_get_temp_dir();
 
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new ConcreteFileDumper();
-        $dumper->dump($catalogue, array('path' => $tempDir));
+        $dumper->dump($catalogue, ['path' => $tempDir]);
 
         $this->assertFileExists($tempDir.'/messages.en.concrete');
 
@@ -44,10 +44,10 @@ public function testDumpBackupsFileIfExisting()
         @touch($file);
 
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new ConcreteFileDumper();
-        $dumper->dump($catalogue, array('path' => $tempDir));
+        $dumper->dump($catalogue, ['path' => $tempDir]);
 
         $this->assertFileExists($backupFile);
 
@@ -62,11 +62,11 @@ public function testDumpCreatesNestedDirectoriesAndFile()
         $file = $translationsDir.'/messages.en.concrete';
 
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new ConcreteFileDumper();
         $dumper->setRelativePathTemplate('test/translations/%domain%.%locale%.%extension%');
-        $dumper->dump($catalogue, array('path' => $tempDir));
+        $dumper->dump($catalogue, ['path' => $tempDir]);
 
         $this->assertFileExists($file);
 
@@ -77,7 +77,7 @@ public function testDumpCreatesNestedDirectoriesAndFile()
 
 class ConcreteFileDumper extends FileDumper
 {
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         return '';
     }
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/IcuResFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/IcuResFileDumperTest.php
index 78d0abb6e4e1..dcb9c2c38f78 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/IcuResFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/IcuResFileDumperTest.php
@@ -20,7 +20,7 @@ class IcuResFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new IcuResFileDumper();
 
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/IniFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/IniFileDumperTest.php
index 5f3c1236c7f5..1ed168bdc3a1 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/IniFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/IniFileDumperTest.php
@@ -20,7 +20,7 @@ class IniFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new IniFileDumper();
 
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/JsonFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/JsonFileDumperTest.php
index b134ce4f2314..04e3d86bec4c 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/JsonFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/JsonFileDumperTest.php
@@ -20,7 +20,7 @@ class JsonFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new JsonFileDumper();
 
@@ -30,10 +30,10 @@ public function testFormatCatalogue()
     public function testDumpWithCustomEncoding()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => '"bar"'));
+        $catalogue->add(['foo' => '"bar"']);
 
         $dumper = new JsonFileDumper();
 
-        $this->assertStringEqualsFile(__DIR__.'/../fixtures/resources.dump.json', $dumper->formatCatalogue($catalogue, 'messages', array('json_encoding' => JSON_HEX_QUOT)));
+        $this->assertStringEqualsFile(__DIR__.'/../fixtures/resources.dump.json', $dumper->formatCatalogue($catalogue, 'messages', ['json_encoding' => JSON_HEX_QUOT]));
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/MoFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/MoFileDumperTest.php
index d0519675bc40..fbbd75dc3b49 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/MoFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/MoFileDumperTest.php
@@ -20,7 +20,7 @@ class MoFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new MoFileDumper();
 
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/PhpFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/PhpFileDumperTest.php
index 22a39dd43d73..00e535da391c 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/PhpFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/PhpFileDumperTest.php
@@ -20,7 +20,7 @@ class PhpFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new PhpFileDumper();
 
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/PoFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/PoFileDumperTest.php
index 5d75247103d8..d694a6dd3fb1 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/PoFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/PoFileDumperTest.php
@@ -20,7 +20,7 @@ class PoFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new PoFileDumper();
 
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/QtFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/QtFileDumperTest.php
index 8e4a6f43fcf6..edfad6005cb7 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/QtFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/QtFileDumperTest.php
@@ -20,7 +20,7 @@ class QtFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'), 'resources');
+        $catalogue->add(['foo' => 'bar'], 'resources');
 
         $dumper = new QtFileDumper();
 
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/XliffFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/XliffFileDumperTest.php
index 443dccf2bcdc..c634a2793671 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/XliffFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/XliffFileDumperTest.php
@@ -20,49 +20,49 @@ class XliffFileDumperTest extends TestCase
     public function testFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en_US');
-        $catalogue->add(array(
+        $catalogue->add([
             'foo' => 'bar',
             'key' => '',
             'key.with.cdata' => '<source> & <target>',
-        ));
-        $catalogue->setMetadata('foo', array('notes' => array(array('priority' => 1, 'from' => 'bar', 'content' => 'baz'))));
-        $catalogue->setMetadata('key', array('notes' => array(array('content' => 'baz'), array('content' => 'qux'))));
+        ]);
+        $catalogue->setMetadata('foo', ['notes' => [['priority' => 1, 'from' => 'bar', 'content' => 'baz']]]);
+        $catalogue->setMetadata('key', ['notes' => [['content' => 'baz'], ['content' => 'qux']]]);
 
         $dumper = new XliffFileDumper();
 
         $this->assertStringEqualsFile(
             __DIR__.'/../fixtures/resources-clean.xlf',
-            $dumper->formatCatalogue($catalogue, 'messages', array('default_locale' => 'fr_FR'))
+            $dumper->formatCatalogue($catalogue, 'messages', ['default_locale' => 'fr_FR'])
         );
     }
 
     public function testFormatCatalogueXliff2()
     {
         $catalogue = new MessageCatalogue('en_US');
-        $catalogue->add(array(
+        $catalogue->add([
             'foo' => 'bar',
             'key' => '',
             'key.with.cdata' => '<source> & <target>',
-        ));
-        $catalogue->setMetadata('key', array('target-attributes' => array('order' => 1)));
+        ]);
+        $catalogue->setMetadata('key', ['target-attributes' => ['order' => 1]]);
 
         $dumper = new XliffFileDumper();
 
         $this->assertStringEqualsFile(
             __DIR__.'/../fixtures/resources-2.0-clean.xlf',
-            $dumper->formatCatalogue($catalogue, 'messages', array('default_locale' => 'fr_FR', 'xliff_version' => '2.0'))
+            $dumper->formatCatalogue($catalogue, 'messages', ['default_locale' => 'fr_FR', 'xliff_version' => '2.0'])
         );
     }
 
     public function testFormatCatalogueWithCustomToolInfo()
     {
-        $options = array(
+        $options = [
             'default_locale' => 'en_US',
-            'tool_info' => array('tool-id' => 'foo', 'tool-name' => 'foo', 'tool-version' => '0.0', 'tool-company' => 'Foo'),
-        );
+            'tool_info' => ['tool-id' => 'foo', 'tool-name' => 'foo', 'tool-version' => '0.0', 'tool-company' => 'Foo'],
+        ];
 
         $catalogue = new MessageCatalogue('en_US');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new XliffFileDumper();
 
@@ -75,41 +75,41 @@ public function testFormatCatalogueWithCustomToolInfo()
     public function testFormatCatalogueWithTargetAttributesMetadata()
     {
         $catalogue = new MessageCatalogue('en_US');
-        $catalogue->add(array(
+        $catalogue->add([
             'foo' => 'bar',
-        ));
-        $catalogue->setMetadata('foo', array('target-attributes' => array('state' => 'needs-translation')));
+        ]);
+        $catalogue->setMetadata('foo', ['target-attributes' => ['state' => 'needs-translation']]);
 
         $dumper = new XliffFileDumper();
 
         $this->assertStringEqualsFile(
             __DIR__.'/../fixtures/resources-target-attributes.xlf',
-            $dumper->formatCatalogue($catalogue, 'messages', array('default_locale' => 'fr_FR'))
+            $dumper->formatCatalogue($catalogue, 'messages', ['default_locale' => 'fr_FR'])
         );
     }
 
     public function testFormatCatalogueWithNotesMetadata()
     {
         $catalogue = new MessageCatalogue('en_US');
-        $catalogue->add(array(
+        $catalogue->add([
             'foo' => 'bar',
             'baz' => 'biz',
-        ));
-        $catalogue->setMetadata('foo', array('notes' => array(
-            array('category' => 'state', 'content' => 'new'),
-            array('category' => 'approved', 'content' => 'true'),
-            array('category' => 'section', 'content' => 'user login', 'priority' => '1'),
-        )));
-        $catalogue->setMetadata('baz', array('notes' => array(
-            array('id' => 'x', 'content' => 'x_content'),
-            array('appliesTo' => 'target', 'category' => 'quality', 'content' => 'Fuzzy'),
-        )));
+        ]);
+        $catalogue->setMetadata('foo', ['notes' => [
+            ['category' => 'state', 'content' => 'new'],
+            ['category' => 'approved', 'content' => 'true'],
+            ['category' => 'section', 'content' => 'user login', 'priority' => '1'],
+        ]]);
+        $catalogue->setMetadata('baz', ['notes' => [
+            ['id' => 'x', 'content' => 'x_content'],
+            ['appliesTo' => 'target', 'category' => 'quality', 'content' => 'Fuzzy'],
+        ]]);
 
         $dumper = new XliffFileDumper();
 
         $this->assertStringEqualsFile(
             __DIR__.'/../fixtures/resources-notes-meta.xlf',
-            $dumper->formatCatalogue($catalogue, 'messages', array('default_locale' => 'fr_FR', 'xliff_version' => '2.0'))
+            $dumper->formatCatalogue($catalogue, 'messages', ['default_locale' => 'fr_FR', 'xliff_version' => '2.0'])
         );
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/YamlFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/YamlFileDumperTest.php
index a5549a2e9300..24bc65ba248f 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/YamlFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/YamlFileDumperTest.php
@@ -21,24 +21,24 @@ public function testTreeFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
         $catalogue->add(
-            array(
+            [
                 'foo.bar1' => 'value1',
                 'foo.bar2' => 'value2',
-            ));
+            ]);
 
         $dumper = new YamlFileDumper();
 
-        $this->assertStringEqualsFile(__DIR__.'/../fixtures/messages.yml', $dumper->formatCatalogue($catalogue, 'messages', array('as_tree' => true, 'inline' => 999)));
+        $this->assertStringEqualsFile(__DIR__.'/../fixtures/messages.yml', $dumper->formatCatalogue($catalogue, 'messages', ['as_tree' => true, 'inline' => 999]));
     }
 
     public function testLinearFormatCatalogue()
     {
         $catalogue = new MessageCatalogue('en');
         $catalogue->add(
-            array(
+            [
                 'foo.bar1' => 'value1',
                 'foo.bar2' => 'value2',
-            ));
+            ]);
 
         $dumper = new YamlFileDumper();
 
diff --git a/src/Symfony/Component/Translation/Tests/Extractor/PhpExtractorTest.php b/src/Symfony/Component/Translation/Tests/Extractor/PhpExtractorTest.php
index 3487dd62489e..f6a17d00c0f6 100644
--- a/src/Symfony/Component/Translation/Tests/Extractor/PhpExtractorTest.php
+++ b/src/Symfony/Component/Translation/Tests/Extractor/PhpExtractorTest.php
@@ -39,8 +39,8 @@ public function testExtraction($resource)
 nowdoc key with whitespace and nonescaped \$\n sequences
 EOF;
         // Assert
-        $expectedCatalogue = array(
-            'messages' => array(
+        $expectedCatalogue = [
+            'messages' => [
                 'single-quoted key' => 'prefixsingle-quoted key',
                 'double-quoted key' => 'prefixdouble-quoted key',
                 'heredoc key' => 'prefixheredoc key',
@@ -51,8 +51,8 @@ public function testExtraction($resource)
                 $expectedHeredoc => 'prefix'.$expectedHeredoc,
                 $expectedNowdoc => 'prefix'.$expectedNowdoc,
                 '{0} There is no apples|{1} There is one apple|]1,Inf[ There are %count% apples' => 'prefix{0} There is no apples|{1} There is one apple|]1,Inf[ There are %count% apples',
-            ),
-            'not_messages' => array(
+            ],
+            'not_messages' => [
                 'other-domain-test-no-params-short-array' => 'prefixother-domain-test-no-params-short-array',
                 'other-domain-test-no-params-long-array' => 'prefixother-domain-test-no-params-long-array',
                 'other-domain-test-params-short-array' => 'prefixother-domain-test-params-short-array',
@@ -62,8 +62,8 @@ public function testExtraction($resource)
                 'typecast' => 'prefixtypecast',
                 'msg1' => 'prefixmsg1',
                 'msg2' => 'prefixmsg2',
-            ),
-        );
+            ],
+        ];
         $actualCatalogue = $catalogue->all();
 
         $this->assertEquals($expectedCatalogue, $actualCatalogue);
@@ -72,7 +72,7 @@ public function testExtraction($resource)
     public function resourcesProvider()
     {
         $directory = __DIR__.'/../fixtures/extractor/';
-        $splFiles = array();
+        $splFiles = [];
         foreach (new \DirectoryIterator($directory) as $fileInfo) {
             if ($fileInfo->isDot()) {
                 continue;
@@ -83,13 +83,13 @@ public function resourcesProvider()
             $splFiles[] = $fileInfo->getFileInfo();
         }
 
-        return array(
-            array($directory),
-            array($phpFile),
-            array(glob($directory.'*')),
-            array($splFiles),
-            array(new \ArrayObject(glob($directory.'*'))),
-            array(new \ArrayObject($splFiles)),
-        );
+        return [
+            [$directory],
+            [$phpFile],
+            [glob($directory.'*')],
+            [$splFiles],
+            [new \ArrayObject(glob($directory.'*'))],
+            [new \ArrayObject($splFiles)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/Formatter/MessageFormatterTest.php b/src/Symfony/Component/Translation/Tests/Formatter/MessageFormatterTest.php
index 1fa736e7e3df..17b815d306ee 100644
--- a/src/Symfony/Component/Translation/Tests/Formatter/MessageFormatterTest.php
+++ b/src/Symfony/Component/Translation/Tests/Formatter/MessageFormatterTest.php
@@ -19,7 +19,7 @@ class MessageFormatterTest extends TestCase
     /**
      * @dataProvider getTransMessages
      */
-    public function testFormat($expected, $message, $parameters = array())
+    public function testFormat($expected, $message, $parameters = [])
     {
         $this->assertEquals($expected, $this->getMessageFormatter()->format($message, 'en', $parameters));
     }
@@ -34,45 +34,45 @@ public function testForm
57AE
atPlural($expected, $message, $number, $parameters)
 
     public function getTransMessages()
     {
-        return array(
-            array(
+        return [
+            [
                 'There is one apple',
                 'There is one apple',
-            ),
-            array(
+            ],
+            [
                 'There are 5 apples',
                 'There are %count% apples',
-                array('%count%' => 5),
-            ),
-            array(
+                ['%count%' => 5],
+            ],
+            [
                 'There are 5 apples',
                 'There are {{count}} apples',
-                array('{{count}}' => 5),
-            ),
-        );
+                ['{{count}}' => 5],
+            ],
+        ];
     }
 
     public function getTransChoiceMessages()
     {
-        return array(
-            array('Il y a 0 pomme', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, array('%count%' => 0)),
-            array('Il y a 1 pomme', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 1, array('%count%' => 1)),
-            array('Il y a 10 pommes', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 10, array('%count%' => 10)),
+        return [
+            ['Il y a 0 pomme', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, ['%count%' => 0]],
+            ['Il y a 1 pomme', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 1, ['%count%' => 1]],
+            ['Il y a 10 pommes', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 10, ['%count%' => 10]],
 
-            array('Il y a 0 pomme', 'Il y a %count% pomme|Il y a %count% pommes', 0, array('%count%' => 0)),
-            array('Il y a 1 pomme', 'Il y a %count% pomme|Il y a %count% pommes', 1, array('%count%' => 1)),
-            array('Il y a 10 pommes', 'Il y a %count% pomme|Il y a %count% pommes', 10, array('%count%' => 10)),
+            ['Il y a 0 pomme', 'Il y a %count% pomme|Il y a %count% pommes', 0, ['%count%' => 0]],
+            ['Il y a 1 pomme', 'Il y a %count% pomme|Il y a %count% pommes', 1, ['%count%' => 1]],
+            ['Il y a 10 pommes', 'Il y a %count% pomme|Il y a %count% pommes', 10, ['%count%' => 10]],
 
-            array('Il y a 0 pomme', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 0, array('%count%' => 0)),
-            array('Il y a 1 pomme', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 1, array('%count%' => 1)),
-            array('Il y a 10 pommes', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 10, array('%count%' => 10)),
+            ['Il y a 0 pomme', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 0, ['%count%' => 0]],
+            ['Il y a 1 pomme', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 1, ['%count%' => 1]],
+            ['Il y a 10 pommes', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 10, ['%count%' => 10]],
 
-            array('Il n\'y a aucune pomme', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 0, array('%count%' => 0)),
-            array('Il y a 1 pomme', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 1, array('%count%' => 1)),
-            array('Il y a 10 pommes', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 10, array('%count%' => 10)),
+            ['Il n\'y a aucune pomme', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 0, ['%count%' => 0]],
+            ['Il y a 1 pomme', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 1, ['%count%' => 1]],
+            ['Il y a 10 pommes', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 10, ['%count%' => 10]],
 
-            array('Il y a 0 pomme', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, array('%count%' => 0)),
-        );
+            ['Il y a 0 pomme', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, ['%count%' => 0]],
+        ];
     }
 
     private function getMessageFormatter()
diff --git a/src/Symfony/Component/Translation/Tests/IdentityTranslatorTest.php b/src/Symfony/Component/Translation/Tests/IdentityTranslatorTest.php
index 78288da40e15..c3d7b1f7d128 100644
--- a/src/Symfony/Component/Translation/Tests/IdentityTranslatorTest.php
+++ b/src/Symfony/Component/Translation/Tests/IdentityTranslatorTest.php
@@ -74,23 +74,23 @@ public function testGetLocaleReturnsDefaultLocaleIfNotSet()
 
     public function getTransTests()
     {
-        return array(
-            array('Symfony is great!', 'Symfony is great!', array()),
-            array('Symfony is awesome!', 'Symfony is %what%!', array('%what%' => 'awesome')),
-        );
+        return [
+            ['Symfony is great!', 'Symfony is great!', []],
+            ['Symfony is awesome!', 'Symfony is %what%!', ['%what%' => 'awesome']],
+        ];
     }
 
     public function getTransChoiceTests()
     {
-        return array(
-            array('There are no apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0, array('%count%' => 0)),
-            array('There is one apple', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 1, array('%count%' => 1)),
-            array('There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 10, array('%count%' => 10)),
-            array('There are 0 apples', 'There is 1 apple|There are %count% apples', 0, array('%count%' => 0)),
-            array('There is 1 apple', 'There is 1 apple|There are %count% apples', 1, array('%count%' => 1)),
-            array('There are 10 apples', 'There is 1 apple|There are %count% apples', 10, array('%count%' => 10)),
+        return [
+            ['There are no apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0, ['%count%' => 0]],
+            ['There is one apple', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 1, ['%count%' => 1]],
+            ['There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 10, ['%count%' => 10]],
+            ['There are 0 apples', 'There is 1 apple|There are %count% apples', 0, ['%count%' => 0]],
+            ['There is 1 apple', 'There is 1 apple|There are %count% apples', 1, ['%count%' => 1]],
+            ['There are 10 apples', 'There is 1 apple|There are %count% apples', 10, ['%count%' => 10]],
             // custom validation messages may be coded with a fixed value
-            array('There are 2 apples', 'There are 2 apples', 2, array('%count%' => 2)),
-        );
+            ['There are 2 apples', 'There are 2 apples', 2, ['%count%' => 2]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/IntervalTest.php b/src/Symfony/Component/Translation/Tests/IntervalTest.php
index 99b209a70825..8da3bb151722 100644
--- a/src/Symfony/Component/Translation/Tests/IntervalTest.php
+++ b/src/Symfony/Component/Translation/Tests/IntervalTest.php
@@ -34,16 +34,16 @@ public function testTestException()
 
     public function getTests()
     {
-        return array(
-            array(true, 3, '{1,2, 3 ,4}'),
-            array(false, 10, '{1,2, 3 ,4}'),
-            array(false, 3, '[1,2]'),
-            array(true, 1, '[1,2]'),
-            array(true, 2, '[1,2]'),
-            array(false, 1, ']1,2['),
-            array(false, 2, ']1,2['),
-            array(true, log(0), '[-Inf,2['),
-            array(true, -log(0), '[-2,+Inf]'),
-        );
+        return [
+            [true, 3, '{1,2, 3 ,4}'],
+            [false, 10, '{1,2, 3 ,4}'],
+            [false, 3, '[1,2]'],
+            [true, 1, '[1,2]'],
+            [true, 2, '[1,2]'],
+            [false, 1, ']1,2['],
+            [false, 2, ']1,2['],
+            [true, log(0), '[-Inf,2['],
+            [true, -log(0), '[-2,+Inf]'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/Loader/CsvFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/CsvFileLoaderTest.php
index 29efdef00d96..4fd5752db222 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/CsvFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/CsvFileLoaderTest.php
@@ -23,9 +23,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resources.csv';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testLoadDoesNothingIfEmpty()
@@ -34,9 +34,9 @@ public function testLoadDoesNothingIfEmpty()
         $resource = __DIR__.'/../fixtures/empty.csv';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array(), $catalogue->all('domain1'));
+        $this->assertEquals([], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/Loader/IcuDatFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/IcuDatFileLoaderTest.php
index e28db60135e4..601680af8afd 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/IcuDatFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/IcuDatFileLoaderTest.php
@@ -37,9 +37,9 @@ public function testDatEnglishLoad()
         $resource = __DIR__.'/../fixtures/resourcebundle/dat/resources';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('symfony' => 'Symfony 2 is great'), $catalogue->all('domain1'));
+        $this->assertEquals(['symfony' => 'Symfony 2 is great'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource.'.dat')), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource.'.dat')], $catalogue->getResources());
     }
 
     public function testDatFrenchLoad()
@@ -48,9 +48,9 @@ public function testDatFrenchLoad()
         $resource = __DIR__.'/../fixtures/resourcebundle/dat/resources';
         $catalogue = $loader->load($resource, 'fr', 'domain1');
 
-        $this->assertEquals(array('symfony' => 'Symfony 2 est génial'), $catalogue->all('domain1'));
+        $this->assertEquals(['symfony' => 'Symfony 2 est génial'], $catalogue->all('domain1'));
         $this->assertEquals('fr', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource.'.dat')), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource.'.dat')], $catalogue->getResources());
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/Loader/IcuResFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/IcuResFileLoaderTest.php
index 92d8933c8e7e..962c3af2efeb 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/IcuResFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/IcuResFileLoaderTest.php
@@ -26,9 +26,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resourcebundle/res';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new DirectoryResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new DirectoryResource($resource)], $catalogue->getResources());
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/Loader/IniFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/IniFileLoaderTest.php
index d9dcc5e8f015..e0d8b2f4c4a0 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/IniFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/IniFileLoaderTest.php
@@ -23,9 +23,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resources.ini';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testLoadDoesNothingIfEmpty()
@@ -34,9 +34,9 @@ public function testLoadDoesNothingIfEmpty()
         $resource = __DIR__.'/../fixtures/empty.ini';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array(), $catalogue->all('domain1'));
+        $this->assertEquals([], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/Loader/JsonFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/JsonFileLoaderTest.php
index cea0aef4bb2f..4c507da5abdf 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/JsonFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/JsonFileLoaderTest.php
@@ -23,9 +23,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resources.json';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testLoadDoesNothingIfEmpty()
@@ -34,9 +34,9 @@ public function testLoadDoesNothingIfEmpty()
         $resource = __DIR__.'/../fixtures/empty.json';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array(), $catalogue->all('domain1'));
+        $this->assertEquals([], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/Loader/MoFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/MoFileLoaderTest.php
index 6ad3d44d2144..63de5cebaa4d 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/MoFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/MoFileLoaderTest.php
@@ -23,9 +23,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resources.mo';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testLoadPlurals()
@@ -34,9 +34,9 @@ public function testLoadPlurals()
         $resource = __DIR__.'/../fixtures/plurals.mo';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar', 'foos' => '{0} bar|{1} bars'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar', 'foos' => '{0} bar|{1} bars'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     /**
@@ -65,8 +65,8 @@ public function testLoadEmptyTranslation()
         $resource = __DIR__.'/../fixtures/empty-translation.mo';
         $catalogue = $loader->load($resource, 'en', 'message');
 
-        $this->assertEquals(array(), $catalogue->all('message'));
+        $this->assertEquals([], $catalogue->all('message'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/Loader/PhpFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/PhpFileLoaderTest.php
index 01b7a5feab72..68cb2d0b72b5 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/PhpFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/PhpFileLoaderTest.php
@@ -23,9 +23,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resources.php';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/Loader/PoFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/PoFileLoaderTest.php
index 4176cb7ffcc9..4bf2ee6545b6 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/PoFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/PoFileLoaderTest.php
@@ -23,9 +23,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resources.po';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testLoadPlurals()
@@ -34,9 +34,9 @@ public function testLoadPlurals()
         $resource = __DIR__.'/../fixtures/plurals.po';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar', 'foos' => 'bar|bars'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar', 'foos' => 'bar|bars'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testLoadDoesNothingIfEmpty()
@@ -45,9 +45,9 @@ public function testLoadDoesNothingIfEmpty()
         $resource = __DIR__.'/../fixtures/empty.po';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array(), $catalogue->all('domain1'));
+        $this->assertEquals([], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     /**
@@ -66,9 +66,9 @@ public function testLoadEmptyTranslation()
         $resource = __DIR__.'/../fixtures/empty-translation.po';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => ''), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => ''], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testEscapedId()
diff --git a/src/Symfony/Component/Translation/Tests/Loader/QtFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/QtFileLoaderTest.php
index 8a00fdedcf15..08f55e9022b8 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/QtFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/QtFileLoaderTest.php
@@ -23,9 +23,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resources.ts';
         $catalogue = $loader->load($resource, 'en', 'resources');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('resources'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('resources'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/
B41A
XliffFileLoaderTest.php
index c6958486c120..7cb9f54fde2e 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/XliffFileLoaderTest.php
@@ -24,8 +24,8 @@ public function testLoad()
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
-        $this->assertSame(array(), libxml_get_errors());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
+        $this->assertSame([], libxml_get_errors());
         $this->assertContainsOnly('string', $catalogue->all('domain1'));
     }
 
@@ -33,15 +33,15 @@ public function testLoadWithInternalErrorsEnabled()
     {
         $internalErrors = libxml_use_internal_errors(true);
 
-        $this->assertSame(array(), libxml_get_errors());
+        $this->assertSame([], libxml_get_errors());
 
         $loader = new XliffFileLoader();
         $resource = __DIR__.'/../fixtures/resources.xlf';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
-        $this->assertSame(array(), libxml_get_errors());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
+        $this->assertSame([], libxml_get_errors());
 
         libxml_clear_errors();
         libxml_use_internal_errors($internalErrors);
@@ -58,7 +58,7 @@ public function testLoadWithExternalEntitiesDisabled()
         libxml_disable_entity_loader($disableEntities);
 
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testLoadWithResname()
@@ -66,7 +66,7 @@ public function testLoadWithResname()
         $loader = new XliffFileLoader();
         $catalogue = $loader->load(__DIR__.'/../fixtures/resname.xlf', 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar', 'bar' => 'baz', 'baz' => 'foo', 'qux' => 'qux source'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar', 'bar' => 'baz', 'baz' => 'foo', 'qux' => 'qux source'], $catalogue->all('domain1'));
     }
 
     public function testIncompleteResource()
@@ -74,7 +74,7 @@ public function testIncompleteResource()
         $loader = new XliffFileLoader();
         $catalogue = $loader->load(__DIR__.'/../fixtures/resources.xlf', 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar', 'extra' => 'extra', 'key' => '', 'test' => 'with'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar', 'extra' => 'extra', 'key' => '', 'test' => 'with'], $catalogue->all('domain1'));
     }
 
     public function testEncoding()
@@ -84,7 +84,7 @@ public function testEncoding()
 
         $this->assertEquals(utf8_decode('föö'), $catalogue->get('bar', 'domain1'));
         $this->assertEquals(utf8_decode('bär'), $catalogue->get('foo', 'domain1'));
-        $this->assertEquals(array('notes' => array(array('content' => utf8_decode('bäz'))), 'id' => '1'), $catalogue->getMetadata('foo', 'domain1'));
+        $this->assertEquals(['notes' => [['content' => utf8_decode('bäz')]], 'id' => '1'], $catalogue->getMetadata('foo', 'domain1'));
     }
 
     public function testTargetAttributesAreStoredCorrectly()
@@ -164,11 +164,11 @@ public function testLoadNotes()
         $loader = new XliffFileLoader();
         $catalogue = $loader->load(__DIR__.'/../fixtures/withnote.xlf', 'en', 'domain1');
 
-        $this->assertEquals(array('notes' => array(array('priority' => 1, 'content' => 'foo')), 'id' => '1'), $catalogue->getMetadata('foo', 'domain1'));
+        $this->assertEquals(['notes' => [['priority' => 1, 'content' => 'foo']], 'id' => '1'], $catalogue->getMetadata('foo', 'domain1'));
         // message without target
-        $this->assertEquals(array('notes' => array(array('content' => 'bar', 'from' => 'foo')), 'id' => '2'), $catalogue->getMetadata('extra', 'domain1'));
+        $this->assertEquals(['notes' => [['content' => 'bar', 'from' => 'foo']], 'id' => '2'], $catalogue->getMetadata('extra', 'domain1'));
         // message with empty target
-        $this->assertEquals(array('notes' => array(array('content' => 'baz'), array('priority' => 2, 'from' => 'bar', 'content' => 'qux')), 'id' => '123'), $catalogue->getMetadata('key', 'domain1'));
+        $this->assertEquals(['notes' => [['content' => 'baz'], ['priority' => 2, 'from' => 'bar', 'content' => 'qux']], 'id' => '123'], $catalogue->getMetadata('key', 'domain1'));
     }
 
     public function testLoadVersion2()
@@ -178,15 +178,15 @@ public function testLoadVersion2()
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
-        $this->assertSame(array(), libxml_get_errors());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
+        $this->assertSame([], libxml_get_errors());
 
         $domains = $catalogue->all();
         $this->assertCount(3, $domains['domain1']);
         $this->assertContainsOnly('string', $catalogue->all('domain1'));
 
         // target attributes
-        $this->assertEquals(array('target-attributes' => array('order' => 1)), $catalogue->getMetadata('bar', 'domain1'));
+        $this->assertEquals(['target-attributes' => ['order' => 1]], $catalogue->getMetadata('bar', 'domain1'));
     }
 
     public function testLoadVersion2WithNoteMeta()
@@ -196,8 +196,8 @@ public function testLoadVersion2WithNoteMeta()
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
-        $this->assertSame(array(), libxml_get_errors());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
+        $this->assertSame([], libxml_get_errors());
 
         // test for "foo" metadata
         $this->assertTrue($catalogue->defines('foo', 'domain1'));
@@ -236,7 +236,7 @@ public function testLoadVersion2WithMultiSegmentUnit()
         $catalog = $loader->load($resource, 'en', 'domain1');
 
         $this->assertSame('en', $catalog->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalog->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalog->getResources());
         $this->assertFalse(libxml_get_last_error());
 
         // test for "foo" metadata
diff --git a/src/Symfony/Component/Translation/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/Translation/Tests/Loader/YamlFileLoaderTest.php
index bb3c1a99a7dc..a535db56fc0e 100644
--- a/src/Symfony/Component/Translation/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/Translation/Tests/Loader/YamlFileLoaderTest.php
@@ -23,9 +23,9 @@ public function testLoad()
         $resource = __DIR__.'/../fixtures/resources.yml';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     public function testLoadDoesNothingIfEmpty()
@@ -34,9 +34,9 @@ public function testLoadDoesNothingIfEmpty()
         $resource = __DIR__.'/../fixtures/empty.yml';
         $catalogue = $loader->load($resource, 'en', 'domain1');
 
-        $this->assertEquals(array(), $catalogue->all('domain1'));
+        $this->assertEquals([], $catalogue->all('domain1'));
         $this->assertEquals('en', $catalogue->getLocale());
-        $this->assertEquals(array(new FileResource($resource)), $catalogue->getResources());
+        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/LoggingTranslatorTest.php b/src/Symfony/Component/Translation/Tests/LoggingTranslatorTest.php
index 022379e93483..1d3f065a5224 100644
--- a/src/Symfony/Component/Translation/Tests/LoggingTranslatorTest.php
+++ b/src/Symfony/Component/Translation/Tests/LoggingTranslatorTest.php
@@ -28,7 +28,7 @@ public function testTransWithNoTranslationIsLogged()
 
         $translator = new Translator('ar');
         $loggableTranslator = new LoggingTranslator($translator, $logger);
-        $loggableTranslator->transChoice('some_message2', 10, array('%count%' => 10));
+        $loggableTranslator->transChoice('some_message2', 10, ['%count%' => 10]);
         $loggableTranslator->trans('bar');
     }
 
@@ -41,10 +41,10 @@ public function testTransChoiceFallbackIsLogged()
         ;
 
         $translator = new Translator('ar');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('some_message2' => 'one thing|%count% things'), 'en');
+        $translator->addResource('array', ['some_message2' => 'one thing|%count% things'], 'en');
         $loggableTranslator = new LoggingTranslator($translator, $logger);
-        $loggableTranslator->transChoice('some_message2', 10, array('%count%' => 10));
+        $loggableTranslator->transChoice('some_message2', 10, ['%count%' => 10]);
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/MessageCatalogueTest.php b/src/Symfony/Component/Translation/Tests/MessageCatalogueTest.php
index 1ab8246969ca..433be2eeaf45 100644
--- a/src/Symfony/Component/Translation/Tests/MessageCatalogueTest.php
+++ b/src/Symfony/Component/Translation/Tests/MessageCatalogueTest.php
@@ -25,23 +25,23 @@ public function testGetLocale()
 
     public function testGetDomains()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array(), 'domain2' => array()));
+        $catalogue = new MessageCatalogue('en', ['domain1' => [], 'domain2' => []]);
 
-        $this->assertEquals(array('domain1', 'domain2'), $catalogue->getDomains());
+        $this->assertEquals(['domain1', 'domain2'], $catalogue->getDomains());
     }
 
     public function testAll()
     {
-        $catalogue = new MessageCatalogue('en', $messages = array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
+        $catalogue = new MessageCatalogue('en', $messages = ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
 
-        $this->assertEquals(array('foo' => 'foo'), $catalogue->all('domain1'));
-        $this->assertEquals(array(), $catalogue->all('domain88'));
+        $this->assertEquals(['foo' => 'foo'], $catalogue->all('domain1'));
+        $this->assertEquals([], $catalogue->all('domain88'));
         $this->assertEquals($messages, $catalogue->all());
     }
 
     public function testHas()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
 
         $this->assertTrue($catalogue->has('foo', 'domain1'));
         $this->assertFalse($catalogue->has('bar', 'domain1'));
@@ -50,7 +50,7 @@ public function testHas()
 
     public function testGetSet()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
         $catalogue->set('foo1', 'foo1', 'domain1');
 
         $this->assertEquals('foo', $catalogue->get('foo', 'domain1'));
@@ -59,24 +59,24 @@ public function testGetSet()
 
     public function testAdd()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
-        $catalogue->add(array('foo1' => 'foo1'), 'domain1');
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
+        $catalogue->add(['foo1' => 'foo1'], 'domain1');
 
         $this->assertEquals('foo', $catalogue->get('foo', 'domain1'));
         $this->assertEquals('foo1', $catalogue->get('foo1', 'domain1'));
 
-        $catalogue->add(array('foo' => 'bar'), 'domain1');
+        $catalogue->add(['foo' => 'bar'], 'domain1');
         $this->assertEquals('bar', $catalogue->get('foo', 'domain1'));
         $this->assertEquals('foo1', $catalogue->get('foo1', 'domain1'));
 
-        $catalogue->add(array('foo' => 'bar'), 'domain88');
+        $catalogue->add(['foo' => 'bar'], 'domain88');
         $this->assertEquals('bar', $catalogue->get('foo', 'domain88'));
     }
 
     public function testReplace()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
-        $catalogue->replace($messages = array('foo1' => 'foo1'), 'domain1');
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
+        $catalogue->replace($messages = ['foo1' => 'foo1'], 'domain1');
 
         $this->assertEquals($messages, $catalogue->all('domain1'));
     }
@@ -89,10 +89,10 @@ public function testAddCatalogue()
         $r1 = $this->getMockBuilder('Symfony\Component\Config\Resource\ResourceInterface')->getMock();
         $r1->expects($this->any())->method('__toString')->will($this->returnValue('r1'));
 
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
         $catalogue->addResource($r);
 
-        $catalogue1 = new MessageCatalogue('en', array('domain1' => array('foo1' => 'foo1')));
+        $catalogue1 = new MessageCatalogue('en', ['domain1' => ['foo1' => 'foo1']]);
         $catalogue1->addResource($r1);
 
         $catalogue->addCatalogue($catalogue1);
@@ -100,7 +100,7 @@ public function testAddCatalogue()
         $this->assertEquals('foo', $catalogue->get('foo', 'domain1'));
         $this->assertEquals('foo1', $catalogue->get('foo1', 'domain1'));
 
-        $this->assertEquals(array($r, $r1), $catalogue->getResources());
+        $this->assertEquals([$r, $r1], $catalogue->getResources());
     }
 
     public function testAddFallbackCatalogue()
@@ -114,10 +114,10 @@ public function testAddFallbackCatalogue()
         $r2 = $this->getMockBuilder('Symfony\Component\Config\Resource\ResourceInterface')->getMock();
         $r2->expects($this->any())->method('__toString')->will($this->returnValue('r2'));
 
-        $catalogue = new MessageCatalogue('fr_FR', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
+        $catalogue = new MessageCatalogue('fr_FR', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
         $catalogue->addResource($r);
 
-        $catalogue1 = new MessageCatalogue('fr', array('domain1' => array('foo' => 'bar', 'foo1' => 'foo1')));
+        $catalogue1 = new MessageCatalogue('fr', ['domain1' => ['foo' => 'bar', 'foo1' => 'foo1']]);
         $catalogue1->addResource($r1);
 
         $catalogue2 = new MessageCatalogue('en');
@@ -129,7 +129,7 @@ public function testAddFallbackCatalogue()
         $this->assertEquals('foo', $catalogue->get('foo', 'domain1'));
         $this->assertEquals('foo1', $catalogue->get('foo1', 'domain1'));
 
-        $this->assertEquals(array($r, $r1, $r2), $catalogue->getResources());
+        $this->assertEquals([$r, $r1, $r2], $catalogue->getResources());
     }
 
     /**
@@ -164,7 +164,7 @@ public function testAddFallbackCatalogueWithFallbackCircularReference()
     public function testAddCatalogueWhenLocaleIsNotTheSameAsTheCurrentOne()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->addCatalogue(new MessageCatalogue('fr', array()));
+        $catalogue->addCatalogue(new MessageCatalogue('fr', []));
     }
 
     public function testGetAddResource()
@@ -178,13 +178,13 @@ public function testGetAddResource()
         $r1->expects($this->any())->method('__toString')->will($this->returnValue('r1'));
         $catalogue->addResource($r1);
 
-        $this->assertEquals(array($r, $r1), $catalogue->getResources());
+        $this->assertEquals([$r, $r1], $catalogue->getResources());
     }
 
     public function testMetadataDelete()
     {
         $catalogue = new MessageCatalogue('en');
-        $this->assertEquals(array(), $catalogue->getMetadata('', ''), 'Metadata is empty');
+        $this->assertEquals([], $catalogue->getMetadata('', ''), 'Metadata is empty');
         $catalogue->deleteMetadata('key', 'messages');
         $catalogue->deleteMetadata('', 'messages');
         $catalogue->deleteMetadata();
@@ -196,8 +196,8 @@ public function testMetadataSetGetDelete()
         $catalogue->setMetadata('key', 'value');
         $this->assertEquals('value', $catalogue->getMetadata('key', 'messages'), "Metadata 'key' = 'value'");
 
-        $catalogue->setMetadata('key2', array());
-        $this->assertEquals(array(), $catalogue->getMetadata('key2', 'messages'), 'Metadata key2 is array');
+        $catalogue->setMetadata('key2', []);
+        $this->assertEquals([], $catalogue->getMetadata('key2', 'messages'), 'Metadata key2 is array');
 
         $catalogue->deleteMetadata('key2', 'messages');
         $this->assertNull($catalogue->getMetadata('key2', 'messages'), 'Metadata key2 should is deleted.');
@@ -210,13 +210,13 @@ public function testMetadataMerge()
     {
         $cat1 = new MessageCatalogue('en');
         $cat1->setMetadata('a', 'b');
-        $this->assertEquals(array('messages' => array('a' => 'b')), $cat1->getMetadata('', ''), 'Cat1 contains messages metadata.');
+        $this->assertEquals(['messages' => ['a' => 'b']], $cat1->getMetadata('', ''), 'Cat1 contains messages metadata.');
 
         $cat2 = new MessageCatalogue('en');
         $cat2->setMetadata('b', 'c', 'domain');
-        $this->assertEquals(array('domain' => array('b' => 'c')), $cat2->getMetadata('', ''), 'Cat2 contains domain metadata.');
+        $this->assertEquals(['domain' => ['b' => 'c']], $cat2->getMetadata('', ''), 'Cat2 contains domain metadata.');
 
         $cat1->addCatalogue($cat2);
-        $this->assertEquals(array('messages' => array('a' => 'b'), 'domain' => array('b' => 'c')), $cat1->getMetadata('', ''), 'Cat1 contains merged metadata.');
+        $this->assertEquals(['messages' => ['a' => 'b'], 'domain' => ['b' => 'c']], $cat1->getMetadata('', ''), 'Cat1 contains merged metadata.');
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/MessageSelectorTest.php b/src/Symfony/Component/Translation/Tests/MessageSelectorTest.php
index 42b7e0a3fada..a887411eed45 100644
--- a/src/Symfony/Component/Translation/Tests/MessageSelectorTest.php
+++ b/src/Symfony/Component/Translation/Tests/MessageSelectorTest.php
@@ -46,92 +46,92 @@ public function testThrowExceptionIfMatchingMessageCannotBeFound($id, $number)
 
     public function getNonMatchingMessages()
     {
-        return array(
-            array('{0} There are no apples|{1} There is one apple', 2),
-            array('{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('{1} There is one apple|]2,Inf] There are %count% apples', 2),
-            array('{0} There are no apples|There is one apple', 2),
-        );
+        return [
+            ['{0} There are no apples|{1} There is one apple', 2],
+            ['{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['{1} There is one apple|]2,Inf] There are %count% apples', 2],
+            ['{0} There are no apples|There is one apple', 2],
+        ];
     }
 
     public function getChooseTests()
     {
-        return array(
-            array('There are no apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('There are no apples', '{0}     There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('There are no apples', '{0}There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0),
+        return [
+            ['There are no apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['There are no apples', '{0}     There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['There are no apples', '{0}There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0],
 
-            array('There is one apple', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 1),
+            ['There is one apple', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 1],
 
-            array('There are %count% apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 10),
-            array('There are %count% apples', '{0} There are no apples|{1} There is one apple|]1,Inf]There are %count% apples', 10),
-            array('There are %count% apples', '{0} There are no apples|{1} There is one apple|]1,Inf]     There are %count% apples', 10),
+            ['There are %count% apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 10],
+            ['There are %count% apples', '{0} There are no apples|{1} There is one apple|]1,Inf]There are %count% apples', 10],
+            ['There are %count% apples', '{0} There are no apples|{1} There is one apple|]1,Inf]     There are %count% apples', 10],
 
-            array('There are %count% apples', 'There is one apple|There are %count% apples', 0),
-            array('There is one apple', 'There is one apple|There are %count% apples', 1),
-            array('There are %count% apples', 'There is one apple|There are %count% apples', 10),
+            ['There are %count% apples', 'There is one apple|There are %count% apples', 0],
+            ['There is one apple', 'There is one apple|There are %count% apples', 1],
+            ['There are %count% apples', 'There is one apple|There are %count% apples', 10],
 
-            array('There are %count% apples', 'one: There is one apple|more: There are %count% apples', 0),
-            array('There is one apple', 'one: There is one apple|more: There are %count% apples', 1),
-            array('There are %count% apples', 'one: There is one apple|more: There are %count% apples', 10),
+            ['There are %count% apples', 'one: There is one apple|more: There are %count% apples', 0],
+            ['There is one apple', 'one: There is one apple|more: There are %count% apples', 1],
+            ['There are %count% apples', 'one: There is one apple|more: There are %count% apples', 10],
 
-            array('There are no apples', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 0),
-            array('There is one apple', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 1),
-            array('There are %count% apples', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 10),
+            ['There are no apples', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 0],
+            ['There is one apple', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 1],
+            ['There are %count% apples', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 10],
 
-            array('', '{0}|{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('', '{0} There are no apples|{1}|]1,Inf] There are %count% apples', 1),
+            ['', '{0}|{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['', '{0} There are no apples|{1}|]1,Inf] There are %count% apples', 1],
 
             // Indexed only tests which are Gettext PoFile* compatible strings.
-            array('There are %count% apples', 'There is one apple|There are %count% apples', 0),
-            array('There is one apple', 'There is one apple|There are %count% apples', 1),
-            array('There are %count% apples', 'There is one apple|There are %count% apples', 2),
+            ['There are %count% apples', 'There is one apple|There are %count% apples', 0],
+            ['There is one apple', 'There is one apple|There are %count% apples', 1],
+            ['There are %count% apples', 'There is one apple|There are %count% apples', 2],
 
             // Tests for float numbers
-            array('There is almost one apple', '{0} There are no apples|]0,1[ There is almost one apple|{1} There is one apple|[1,Inf] There is more than one apple', 0.7),
-            array('There is one apple', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 1),
-            array('There is more than one apple', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 1.7),
-            array('There are no apples', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0),
-            array('There are no apples', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0.0),
-            array('There are no apples', '{0.0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0),
+            ['There is almost one apple', '{0} There are no apples|]0,1[ There is almost one apple|{1} There is one apple|[1,Inf] There is more than one apple', 0.7],
+            ['There is one apple', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 1],
+            ['There is more than one apple', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 1.7],
+            ['There are no apples', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0],
+            ['There are no apples', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0.0],
+            ['There are no apples', '{0.0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0],
 
             // Test texts with new-lines
             // with double-quotes and \n in id & double-quotes and actual newlines in text
-            array("This is a text with a\n            new-line in it. Selector = 0.", '{0}This is a text with a
+            ["This is a text with a\n            new-line in it. Selector = 0.", '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 0),
+            new-line in it. Selector > 1.', 0],
             // with double-quotes and \n in id and single-quotes and actual newlines in text
-            array("This is a text with a\n            new-line in it. Selector = 1.", '{0}This is a text with a
+            ["This is a text with a\n            new-line in it. Selector = 1.", '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 1),
-            array("This is a text with a\n            new-line in it. Selector > 1.", '{0}This is a text with a
+            new-line in it. Selector > 1.', 1],
+            ["This is a text with a\n            new-line in it. Selector > 1.", '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 5),
+            new-line in it. Selector > 1.', 5],
             // with double-quotes and id split accros lines
-            array('This is a text with a
+            ['This is a text with a
             new-line in it. Selector = 1.', '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 1),
+            new-line in it. Selector > 1.', 1],
             // with single-quotes and id split accros lines
-            array('This is a text with a
+            ['This is a text with a
             new-line in it. Selector > 1.', '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 5),
+            new-line in it. Selector > 1.', 5],
             // with single-quotes and \n in text
-            array('This is a text with a\nnew-line in it. Selector = 0.', '{0}This is a text with a\nnew-line in it. Selector = 0.|{1}This is a text with a\nnew-line in it. Selector = 1.|[1,Inf]This is a text with a\nnew-line in it. Selector > 1.', 0),
+            ['This is a text with a\nnew-line in it. Selector = 0.', '{0}This is a text with a\nnew-line in it. Selector = 0.|{1}This is a text with a\nnew-line in it. Selector = 1.|[1,Inf]This is a text with a\nnew-line in it. Selector > 1.', 0],
             // with double-quotes and id split accros lines
-            array("This is a text with a\nnew-line in it. Selector = 1.", "{0}This is a text with a\nnew-line in it. Selector = 0.|{1}This is a text with a\nnew-line in it. Selector = 1.|[1,Inf]This is a text with a\nnew-line in it. Selector > 1.", 1),
+            ["This is a text with a\nnew-line in it. Selector = 1.", "{0}This is a text with a\nnew-line in it. Selector = 0.|{1}This is a text with a\nnew-line in it. Selector = 1.|[1,Inf]This is a text with a\nnew-line in it. Selector > 1.", 1],
             // esacape pipe
-            array('This is a text with | in it. Selector = 0.', '{0}This is a text with || in it. Selector = 0.|{1}This is a text with || in it. Selector = 1.', 0),
+            ['This is a text with | in it. Selector = 0.', '{0}This is a text with || in it. Selector = 0.|{1}This is a text with || in it. Selector = 1.', 0],
             // Empty plural set (2 plural forms) from a .PO file
-            array('', '|', 1),
+            ['', '|', 1],
             // Empty plural set (3 plural forms) from a .PO file
-            array('', '||', 1),
-        );
+            ['', '||', 1],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/PluralizationRulesTest.php b/src/Symfony/Component/Translation/Tests/PluralizationRulesTest.php
index 5eb6c01f5d21..287764327a42 100644
--- a/src/Symfony/Component/Translation/Tests/PluralizationRulesTest.php
+++ b/src/Symfony/Component/Translation/Tests/PluralizationRulesTest.php
@@ -60,13 +60,13 @@ public function testLangcodes($nplural, $langCodes)
      */
     public function successLangcodes()
     {
-        return array(
-            array('1', array('ay', 'bo', 'cgg', 'dz', 'id', 'ja', 'jbo', 'ka', 'kk', 'km', 'ko', 'ky')),
-            array('2', array('nl', 'fr', 'en', 'de', 'de_GE', 'hy', 'hy_AM')),
-            array('3', array('be', 'bs', 'cs', 'hr')),
-            array('4', array('cy', 'mt', 'sl')),
-            array('6', array('ar')),
-        );
+        return [
+            ['1', ['ay', 'bo', 'cgg', 'dz', 'id', 'ja', 'jbo', 'ka', 'kk', 'km', 'ko', 'ky']],
+            ['2', ['nl', 'fr', 'en', 'de', 'de_GE', 'hy', 'hy_AM']],
+            ['3', ['be', 'bs', 'cs', 'hr']],
+            ['4', ['cy', 'mt', 'sl']],
+            ['6', ['ar']],
+        ];
     }
 
     /**
@@ -79,13 +79,13 @@ public function successLangcodes()
      */
     public function failingLangcodes()
     {
-        return array(
-            array('1', array('fa')),
-            array('2', array('jbo')),
-            array('3', array('cbs')),
-            array('4', array('gd', 'kw')),
-            array('5', array('ga')),
-        );
+        return [
+            ['1', ['fa']],
+            ['2', ['jbo']],
+            ['3', ['cbs']],
+            ['4', ['gd', 'kw']],
+            ['5', ['ga']],
+        ];
     }
 
     /**
@@ -109,7 +109,7 @@ protected function validateMatrix($nplural, $matrix, $expectSuccess = true)
 
     protected function generateTestData($langCodes)
     {
-        $matrix = array();
+        $matrix = [];
         foreach ($langCodes as $langCode) {
             for ($count = 0; $count < 200; ++$count) {
                 $plural = PluralizationRules::get($count, $langCode);
diff --git a/src/Symfony/Component/Translation/Tests/TranslatorCacheTest.php b/src/Symfony/Component/Translation/Tests/TranslatorCacheTest.php
index 49b3748cc28a..decda70cc4cd 100644
--- a/src/Symfony/Component/Translation/Tests/TranslatorCacheTest.php
+++ b/src/Symfony/Component/Translation/Tests/TranslatorCacheTest.php
@@ -65,13 +65,13 @@ public function testThatACacheIsUsed($debug)
         // Prime the cache
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, new ArrayLoader());
-        $translator->addResource($format, array($msgid => 'OK'), $locale);
+        $translator->addResource($format, [$msgid => 'OK'], $locale);
         $translator->trans($msgid);
 
         // Try again and see we get a valid result whilst no loader can be used
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, $this->createFailingLoader());
-        $translator->addResource($format, array($msgid => 'OK'), $locale);
+        $translator->addResource($format, [$msgid => 'OK'], $locale);
         $this->assertEquals('OK', $translator->trans($msgid), '-> caching does not work in '.($debug ? 'debug' : 'production'));
     }
 
@@ -92,7 +92,7 @@ public function testCatalogueIsReloadedWhenResourcesAreNoLongerFresh()
         $format = 'some_format';
         $msgid = 'test';
 
-        $catalogue = new MessageCatalogue($locale, array());
+        $catalogue = new MessageCatalogue($locale, []);
         $catalogue->addResource(new StaleResource()); // better use a helper class than a mock, because it gets serialized in the cache and re-loaded
 
         /** @var LoaderInterface|\PHPUnit_Framework_MockObject_MockObject $loader */
@@ -133,26 +133,26 @@ public function testDifferentTranslatorsForSameLocaleDoNotOverwriteEachOthersCac
         // Create a Translator and prime its cache
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, new ArrayLoader());
-        $translator->addResource($format, array($msgid => 'OK'), $locale);
+        $translator->addResource($format, [$msgid => 'OK'], $locale);
         $translator->trans($msgid);
 
         // Create another Translator with a different catalogue for the same locale
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, new ArrayLoader());
-        $translator->addResource($format, array($msgid => 'FAIL'), $locale);
+        $translator->addResource($format, [$msgid => 'FAIL'], $locale);
         $translator->trans($msgid);
 
         // Now the first translator must still have a usable cache.
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, $this->createFailingLoader());
-        $translator->addResource($format, array($msgid => 'OK'), $locale);
+        $translator->addResource($format, [$msgid => 'OK'], $locale);
         $this->assertEquals('OK', $translator->trans($msgid), '-> the cache was overwritten by another translator instance in '.($debug ? 'debug' : 'production'));
     }
 
     public function testGeneratedCacheFilesAreOnlyBelongRequestedLocales()
     {
         $translator = new Translator('a', null, $this->tmpDir);
-        $translator->setFallbackLocales(array('b'));
+        $translator->setFallbackLocales(['b']);
         $translator->trans('bar');
 
         $cachedFiles = glob($this->tmpDir.'/*.php');
@@ -168,24 +168,24 @@ public function testDifferentCacheFilesAreUsedForDifferentSetsOfFallbackLocales(
          * loading a catalogue from the cache.
          */
         $translator = new Translator('a', null, $this->tmpDir);
-        $translator->setFallbackLocales(array('b'));
+        $translator->setFallbackLocales(['b']);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (a)'), 'a');
-        $translator->addResource('array', array('bar' => 'bar (b)'), 'b');
+        $translator->addResource('array', ['foo' => 'foo (a)'], 'a');
+        $translator->addResource('array', ['bar' => 'bar (b)'], 'b');
 
         $this->assertEquals('bar (b)', $translator->trans('bar'));
 
         // Remove fallback locale
-        $translator->setFallbackLocales(array());
+        $translator->setFallbackLocales([]);
         $this->assertEquals('bar', $translator->trans('bar'));
 
         // Use a fresh translator with no fallback locales, result should be the same
         $translator = new Translator('a', null, $this->tmpDir);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (a)'), 'a');
-        $translator->addResource('array', array('bar' => 'bar (b)'), 'b');
+        $translator->addResource('array', ['foo' => 'foo (a)'], 'a');
+        $translator->addResource('array', ['bar' => 'bar (b)'], 'b');
 
         $this->assertEquals('bar', $translator->trans('bar'));
     }
@@ -206,12 +206,12 @@ public function testPrimaryAndFallbackCataloguesContainTheSameMessagesRegardless
          * The catalogues contain distinct sets of messages.
          */
         $translator = new Translator('a', null, $this->tmpDir);
-        $translator->setFallbackLocales(array('b'));
+        $translator->setFallbackLocales(['b']);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (a)'), 'a');
-        $translator->addResource('array', array('foo' => 'foo (b)'), 'b');
-        $translator->addResource('array', array('bar' => 'bar (b)'), 'b');
+        $translator->addResource('array', ['foo' => 'foo (a)'], 'a');
+        $translator->addResource('array', ['foo' => 'foo (b)'], 'b');
+        $translator->addResource('array', ['bar' => 'bar (b)'], 'b');
 
         $catalogue = $translator->getCatalogue('a');
         $this->assertFalse($catalogue->defines('bar')); // Sure, the "a" catalogue does not contain that message.
@@ -224,12 +224,12 @@ public function testPrimaryAndFallbackCataloguesContainTheSameMessagesRegardless
          * Behind the scenes, the cache is used. But that should not matter, right?
          */
         $translator = new Translator('a', null, $this->tmpDir);
-        $translator->setFallbackLocales(array('b'));
+        $translator->setFallbackLocales(['b']);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (a)'), 'a');
-        $translator->addResource('array', array('foo' => 'foo (b)'), 'b');
-        $translator->addResource('array', array('bar' => 'bar (b)'), 'b');
+        $translator->addResource('array', ['foo' => 'foo (a)'], 'a');
+        $translator->addResource('array', ['foo' => 'foo (b)'], 'b');
+        $translator->addResource('array', ['bar' => 'bar (b)'], 'b');
 
         $catalogue = $translator->getCatalogue('a');
         $this->assertFalse($catalogue->defines('bar'));
@@ -246,7 +246,7 @@ public function testRefreshCacheWhenResourcesAreNoLongerFresh()
         $loader
             ->expects($this->exactly(2))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('fr', array(), array($resource))));
+            ->will($this->returnValue($this->getCatalogue('fr', [], [$resource])));
 
         // prime the cache
         $translator = new Translator('fr', null, $this->tmpDir, true);
@@ -261,7 +261,7 @@ public function testRefreshCacheWhenResourcesAreNoLongerFresh()
         $translator->trans('foo');
     }
 
-    protected function getCatalogue($locale, $messages, $resources = array())
+    protected function getCatalogue($locale, $messages, $resources = [])
     {
         $catalogue = new MessageCatalogue($locale);
         foreach ($messages as $key => $translation) {
@@ -276,7 +276,7 @@ protected function getCatalogue($locale, $messages, $resources = array())
 
     public function runForDebugAndProduction()
     {
-        return array(array(true), array(false));
+        return [[true], [false]];
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/TranslatorTest.php b/src/Symfony/Component/Translation/Tests/TranslatorTest.php
index 3e54839f77ee..ab6dc5b8d4d4 100644
--- a/src/Symfony/Component/Translation/Tests/TranslatorTest.php
+++ b/src/Symfony/Component/Translation/Tests/TranslatorTest.php
@@ -97,8 +97,8 @@ public function testGetCatalogueReturnsConsolidatedCatalogue()
         $translator = new Translator($locale);
         $translator->addLoader('loader-a', new ArrayLoader());
         $translator->addLoader('loader-b', new ArrayLoader());
-        $translator->addResource('loader-a', array('foo' => 'foofoo'), $locale, 'domain-a');
-        $translator->addResource('loader-b', array('bar' => 'foobar'), $locale, 'domain-b');
+        $translator->addResource('loader-a', ['foo' => 'foofoo'], $locale, 'domain-a');
+        $translator->addResource('loader-b', ['bar' => 'foobar'], $locale, 'domain-b');
 
         /*
          * Test that we get a single catalogue comprising messages
@@ -113,13 +113,13 @@ public function testSetFallbackLocales()
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
-        $translator->addResource('array', array('bar' => 'foobar'), 'fr');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
+        $translator->addResource('array', ['bar' => 'foobar'], 'fr');
 
         // force catalogue loading
         $translator->trans('bar');
 
-        $translator->setFallbackLocales(array('fr'));
+        $translator->setFallbackLocales(['fr']);
         $this->assertEquals('foobar', $translator->trans('bar'));
     }
 
@@ -127,13 +127,13 @@ public function testSetFallbackLocalesMultiple()
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (en)'), 'en');
-        $translator->addResource('array', array('bar' => 'bar (fr)'), 'fr');
+        $translator->addResource('array', ['foo' => 'foo (en)'], 'en');
+        $translator->addResource('array', ['bar' => 'bar (fr)'], 'fr');
 
         // force catalogue loading
         $translator->trans('bar');
 
-        $translator->setFallbackLocales(array('fr_FR', 'fr'));
+        $translator->setFallbackLocales(['fr_FR', 'fr']);
         $this->assertEquals('bar (fr)', $translator->trans('bar'));
     }
 
@@ -144,7 +144,7 @@ public function testSetFallbackLocalesMultiple()
     public function testSetFallbackInvalidLocales($locale)
     {
         $translator = new Translator('fr');
-        $translator->setFallbackLocales(array('fr', $locale));
+        $translator->setFallbackLocales(['fr', $locale]);
     }
 
     /**
@@ -153,7 +153,7 @@ public function testSetFallbackInvalidLocales($locale)
     public function testSetFallbackValidLocales($locale)
     {
         $translator = new Translator($locale);
-        $translator->setFallbackLocales(array('fr', $locale));
+        $translator->setFallbackLocales(['fr', $locale]);
         // no assertion. this method just asserts that no exception is thrown
         $this->addToAssertionCount(1);
     }
@@ -161,10 +161,10 @@ public function testSetFallbackValidLocales($locale)
     public function testTransWithFallbackLocale()
     {
         $translator = new Translator('fr_FR');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('bar' => 'foobar'), 'en');
+        $translator->addResource('array', ['bar' => 'foobar'], 'en');
 
         $this->assertEquals('foobar', $translator->trans('bar'));
     }
@@ -176,7 +176,7 @@ public function testTransWithFallbackLocale()
     public function testAddResourceInvalidLocales($locale)
     {
         $translator = new Translator('fr');
-        $translator->addResource('array', array('foo' => 'foofoo'), $locale);
+        $translator->addResource('array', ['foo' => 'foofoo'], $lo
F438
cale);
     }
 
     /**
@@ -185,7 +185,7 @@ public function testAddResourceInvalidLocales($locale)
     public function testAddResourceValidLocales($locale)
     {
         $translator = new Translator('fr');
-        $translator->addResource('array', array('foo' => 'foofoo'), $locale);
+        $translator->addResource('array', ['foo' => 'foofoo'], $locale);
         // no assertion. this method just asserts that no exception is thrown
         $this->addToAssertionCount(1);
     }
@@ -195,12 +195,12 @@ public function testAddResourceAfterTrans()
         $translator = new Translator('fr');
         $translator->addLoader('array', new ArrayLoader());
 
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
 
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
         $this->assertEquals('foofoo', $translator->trans('foo'));
 
-        $translator->addResource('array', array('bar' => 'foobar'), 'en');
+        $translator->addResource('array', ['bar' => 'foobar'], 'en');
         $this->assertEquals('foobar', $translator->trans('bar'));
     }
 
@@ -231,15 +231,15 @@ public function testTransWithFallbackLocaleFile($format, $loader)
         $translator->addResource($format, __DIR__.'/fixtures/non-existing', 'en_GB');
         $translator->addResource($format, __DIR__.'/fixtures/resources.'.$format, 'en', 'resources');
 
-        $this->assertEquals('bar', $translator->trans('foo', array(), 'resources'));
+        $this->assertEquals('bar', $translator->trans('foo', [], 'resources'));
     }
 
     public function testTransWithFallbackLocaleBis()
     {
         $translator = new Translator('en_US');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en_US');
-        $translator->addResource('array', array('bar' => 'foobar'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en_US');
+        $translator->addResource('array', ['bar' => 'foobar'], 'en');
         $this->assertEquals('foobar', $translator->trans('bar'));
     }
 
@@ -247,10 +247,10 @@ public function testTransWithFallbackLocaleTer()
     {
         $translator = new Translator('fr_FR');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (en_US)'), 'en_US');
-        $translator->addResource('array', array('bar' => 'bar (en)'), 'en');
+        $translator->addResource('array', ['foo' => 'foo (en_US)'], 'en_US');
+        $translator->addResource('array', ['bar' => 'bar (en)'], 'en');
 
-        $translator->setFallbackLocales(array('en_US', 'en'));
+        $translator->setFallbackLocales(['en_US', 'en']);
 
         $this->assertEquals('foo (en_US)', $translator->trans('foo'));
         $this->assertEquals('bar (en)', $translator->trans('bar'));
@@ -259,7 +259,7 @@ public function testTransWithFallbackLocaleTer()
     public function testTransNonExistentWithFallback()
     {
         $translator = new Translator('fr');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
         $translator->addLoader('array', new ArrayLoader());
         $this->assertEquals('non-existent', $translator->trans('non-existent'));
     }
@@ -270,7 +270,7 @@ public function testTransNonExistentWithFallback()
     public function testWhenAResourceHasNoRegisteredLoader()
     {
         $translator = new Translator('en');
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
 
         $translator->trans('foo');
     }
@@ -278,7 +278,7 @@ public function testWhenAResourceHasNoRegisteredLoader()
     public function testNestedFallbackCatalogueWhenUsingMultipleLocales()
     {
         $translator = new Translator('fr');
-        $translator->setFallbackLocales(array('ru', 'en'));
+        $translator->setFallbackLocales(['ru', 'en']);
 
         $translator->getCatalogue('fr');
 
@@ -293,7 +293,7 @@ public function testFallbackCatalogueResources()
         $translator->addResource('yml', __DIR__.'/fixtures/resources.yml', 'en');
 
         // force catalogue loading
-        $this->assertEquals('bar', $translator->trans('foo', array()));
+        $this->assertEquals('bar', $translator->trans('foo', []));
 
         $resources = $translator->getCatalogue('en')->getResources();
         $this->assertCount(1, $resources);
@@ -312,7 +312,7 @@ public function testTrans($expected, $id, $translation, $parameters, $locale, $d
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array((string) $id => $translation), $locale, $domain);
+        $translator->addResource('array', [(string) $id => $translation], $locale, $domain);
 
         $this->assertEquals($expected, $translator->trans($id, $parameters, $domain, $locale));
     }
@@ -325,9 +325,9 @@ public function testTransInvalidLocale($locale)
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
 
-        $translator->trans('foo', array(), '', $locale);
+        $translator->trans('foo', [], '', $locale);
     }
 
     /**
@@ -337,10 +337,10 @@ public function testTransValidLocale($locale)
     {
         $translator = new Translator($locale);
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('test' => 'OK'), $locale);
+        $translator->addResource('array', ['test' => 'OK'], $locale);
 
         $this->assertEquals('OK', $translator->trans('test'));
-        $this->assertEquals('OK', $translator->trans('test', array(), null, $locale));
+        $this->assertEquals('OK', $translator->trans('test', [], null, $locale));
     }
 
     /**
@@ -352,7 +352,7 @@ public function testFlattenedTrans($expected, $messages, $id)
         $translator->addLoader('array', new ArrayLoader());
         $translator->addResource('array', $messages, 'fr', '');
 
-        $this->assertEquals($expected, $translator->trans($id, array(), '', 'fr'));
+        $this->assertEquals($expected, $translator->trans($id, [], '', 'fr'));
     }
 
     /**
@@ -362,7 +362,7 @@ public function testTransChoice($expected, $id, $translation, $number, $paramete
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array((string) $id => $translation), $locale, $domain);
+        $translator->addResource('array', [(string) $id => $translation], $locale, $domain);
 
         $this->assertEquals($expected, $translator->transChoice($id, $number, $parameters, $domain, $locale));
     }
@@ -375,9 +375,9 @@ public function testTransChoiceInvalidLocale($locale)
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
 
-        $translator->transChoice('foo', 1, array(), '', $locale);
+        $translator->transChoice('foo', 1, [], '', $locale);
     }
 
     /**
@@ -387,149 +387,149 @@ public function testTransChoiceValidLocale($locale)
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
 
-        $translator->transChoice('foo', 1, array(), '', $locale);
+        $translator->transChoice('foo', 1, [], '', $locale);
         // no assertion. this method just asserts that no exception is thrown
         $this->addToAssertionCount(1);
     }
 
     public function getTransFileTests()
     {
-        return array(
-            array('csv', 'CsvFileLoader'),
-            array('ini', 'IniFileLoader'),
-            array('mo', 'MoFileLoader'),
-            array('po', 'PoFileLoader'),
-            array('php', 'PhpFileLoader'),
-            array('ts', 'QtFileLoader'),
-            array('xlf', 'XliffFileLoader'),
-            array('yml', 'YamlFileLoader'),
-            array('json', 'JsonFileLoader'),
-        );
+        return [
+            ['csv', 'CsvFileLoader'],
+            ['ini', 'IniFileLoader'],
+            ['mo', 'MoFileLoader'],
+            ['po', 'PoFileLoader'],
+            ['php', 'PhpFileLoader'],
+            ['ts', 'QtFileLoader'],
+            ['xlf', 'XliffFileLoader'],
+            ['yml', 'YamlFileLoader'],
+            ['json', 'JsonFileLoader'],
+        ];
     }
 
     public function getTransTests()
     {
-        return array(
-            array('Symfony est super !', 'Symfony is great!', 'Symfony est super !', array(), 'fr', ''),
-            array('Symfony est awesome !', 'Symfony is %what%!', 'Symfony est %what% !', array('%what%' => 'awesome'), 'fr', ''),
-            array('Symfony est super !', new StringClass('Symfony is great!'), 'Symfony est super !', array(), 'fr', ''),
-        );
+        return [
+            ['Symfony est super !', 'Symfony is great!', 'Symfony est super !', [], 'fr', ''],
+            ['Symfony est awesome !', 'Symfony is %what%!', 'Symfony est %what% !', ['%what%' => 'awesome'], 'fr', ''],
+            ['Symfony est super !', new StringClass('Symfony is great!'), 'Symfony est super !', [], 'fr', ''],
+        ];
     }
 
     public function getFlattenedTransTests()
     {
-        $messages = array(
-            'symfony' => array(
-                'is' => array(
+        $messages = [
+            'symfony' => [
+                'is' => [
                     'great' => 'Symfony est super!',
-                ),
-            ),
-            'foo' => array(
-                'bar' => array(
+                ],
+            ],
+            'foo' => [
+                'bar' => [
                     'baz' => 'Foo Bar Baz',
-                ),
+                ],
                 'baz' => 'Foo Baz',
-            ),
-        );
+            ],
+        ];
 
-        return array(
-            array('Symfony est super!', $messages, 'symfony.is.great'),
-            array('Foo Bar Baz', $messages, 'foo.bar.baz'),
-            array('Foo Baz', $messages, 'foo.baz'),
-        );
+        return [
+            ['Symfony est super!', $messages, 'symfony.is.great'],
+            ['Foo Bar Baz', $messages, 'foo.bar.baz'],
+            ['Foo Baz', $messages, 'foo.baz'],
+        ];
     }
 
     public function getTransChoiceTests()
     {
-        return array(
-            array('Il y a 0 pomme', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, array(), 'fr', ''),
-            array('Il y a 1 pomme', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 1, array(), 'fr', ''),
-            array('Il y a 10 pommes', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 10, array(), 'fr', ''),
+        return [
+            ['Il y a 0 pomme', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, [], 'fr', ''],
+            ['Il y a 1 pomme', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 1, [], 'fr', ''],
+            ['Il y a 10 pommes', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 10, [], 'fr', ''],
 
-            array('Il y a 0 pomme', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 0, array(), 'fr', ''),
-            array('Il y a 1 pomme', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 1, array(), 'fr', ''),
-            array('Il y a 10 pommes', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 10, array(), 'fr', ''),
+            ['Il y a 0 pomme', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 0, [], 'fr', ''],
+            ['Il y a 1 pomme', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 1, [], 'fr', ''],
+            ['Il y a 10 pommes', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 10, [], 'fr', ''],
 
-            array('Il y a 0 pomme', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 0, array(), 'fr', ''),
-            array('Il y a 1 pomme', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 1, array(), 'fr', ''),
-            array('Il y a 10 pommes', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 10, array(), 'fr', ''),
+            ['Il y a 0 pomme', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 0, [], 'fr', ''],
+            ['Il y a 1 pomme', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 1, [], 'fr', ''],
+            ['Il y a 10 pommes', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 10, [], 'fr', ''],
 
-            array('Il n\'y a aucune pomme', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 0, array(), 'fr', ''),
-            array('Il y a 1 pomme', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 1, array(), 'fr', ''),
-            array('Il y a 10 pommes', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 10, array(), 'fr', ''),
+            ['Il n\'y a aucune pomme', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 0, [], 'fr', ''],
+            ['Il y a 1 pomme', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 1, [], 'fr', ''],
+            ['Il y a 10 pommes', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 10, [], 'fr', ''],
 
-            array('Il y a 0 pomme', new StringClass('{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples'), '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, array(), 'fr', ''),
+            ['Il y a 0 pomme', new StringClass('{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples'), '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, [], 'fr', ''],
 
             // Override %count% with a custom value
-            array('Il y a quelques pommes', 'one: There is one apple|more: There are %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 2, array('%count%' => 'quelques'), 'fr', ''),
-        );
+            ['Il y a quelques pommes', 'one: There is one apple|more: There are %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 2, ['%count%' => 'quelques'], 'fr', ''],
+        ];
     }
 
     public function getInvalidLocalesTests()
     {
-        return array(
-            array('fr FR'),
-            array('français'),
-            array('fr+en'),
-            array('utf#8'),
-            array('fr&en'),
-            array('fr~FR'),
-            array(' fr'),
-            array('fr '),
-            array('fr*'),
-            array('fr/FR'),
-            array('fr\\FR'),
-        );
+        return [
+            ['fr FR'],
+            ['français'],
+            ['fr+en'],
+            ['utf#8'],
+            ['fr&en'],
+            ['fr~FR'],
+            [' fr'],
+            ['fr '],
+            ['fr*'],
+            ['fr/FR'],
+            ['fr\\FR'],
+        ];
     }
 
     public function getValidLocalesTests()
     {
-        return array(
-            array(''),
-            array(null),
-            array('fr'),
-            array('francais'),
-            array('FR'),
-            array('frFR'),
-            array('fr-FR'),
-            array('fr_FR'),
-            array('fr.FR'),
-            array('fr-FR.UTF8'),
-            array('sr@latin'),
-        );
+        return [
+            [''],
+            [null],
+            ['fr'],
+            ['francais'],
+            ['FR'],
+            ['frFR'],
+            ['fr-FR'],
+            ['fr_FR'],
+            ['fr.FR'],
+            ['fr-FR.UTF8'],
+            ['sr@latin'],
+        ];
     }
 
     public function testTransChoiceFallback()
     {
         $translator = new Translator('ru');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('some_message2' => 'one thing|%count% things'), 'en');
+        $translator->addResource('array', ['some_message2' => 'one thing|%count% things'], 'en');
 
-        $this->assertEquals('10 things', $translator->transChoice('some_message2', 10, array('%count%' => 10)));
+        $this->assertEquals('10 things', $translator->transChoice('some_message2', 10, ['%count%' => 10]));
     }
 
     public function testTransChoiceFallbackBis()
     {
         $translator = new Translator('ru');
-        $translator->setFallbackLocales(array('en_US', 'en'));
+        $translator->setFallbackLocales(['en_US', 'en']);
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('some_message2' => 'one thing|%count% things'), 'en_US');
+        $translator->addResource('array', ['some_message2' => 'one thing|%count% things'], 'en_US');
 
-        $this->assertEquals('10 things', $translator->transChoice('some_message2', 10, array('%count%' => 10)));
+        $this->assertEquals('10 things', $translator->transChoice('some_message2', 10, ['%count%' => 10]));
     }
 
     public function testTransChoiceFallbackWithNoTranslation()
     {
         $translator = new Translator('ru');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
         $translator->addLoader('array', new ArrayLoader());
 
         // consistent behavior with Translator::trans(), which returns the string
         // unchanged if it can't be found
-        $this->assertEquals('some_message2', $translator->transChoice('some_message2', 10, array('%count%' => 10)));
+        $this->assertEquals('some_message2', $translator->transChoice('some_message2', 10, ['%count%' => 10]));
     }
 }
 
diff --git a/src/Symfony/Component/Translation/Tests/Util/ArrayConverterTest.php b/src/Symfony/Component/Translation/Tests/Util/ArrayConverterTest.php
index dbb5424f1c69..b0335415e1b3 100644
--- a/src/Symfony/Component/Translation/Tests/Util/ArrayConverterTest.php
+++ b/src/Symfony/Component/Translation/Tests/Util/ArrayConverterTest.php
@@ -26,49 +26,49 @@ public function testDump($input, $expectedOutput)
 
     public function messagesData()
     {
-        return array(
-            array(
+        return [
+            [
                 // input
-                array(
+                [
                     'foo1' => 'bar',
                     'foo.bar' => 'value',
-                ),
+                ],
                 // expected output
-                array(
+                [
                     'foo1' => 'bar',
-                    'foo' => array('bar' => 'value'),
-                ),
-            ),
-            array(
+                    'foo' => ['bar' => 'value'],
+                ],
+            ],
+            [
                 // input
-                array(
+                [
                     'foo.bar' => 'value1',
                     'foo.bar.test' => 'value2',
-                ),
+                ],
                 // expected output
-                array(
-                    'foo' => array(
+                [
+                    'foo' => [
                         'bar' => 'value1',
                         'bar.test' => 'value2',
-                    ),
-                ),
-            ),
-            array(
+                    ],
+                ],
+            ],
+            [
                 // input
-                array(
+                [
                     'foo.level2.level3.level4' => 'value1',
                     'foo.level2' => 'value2',
                     'foo.bar' => 'value3',
-                ),
+                ],
                 // expected output
-                array(
-                    'foo' => array(
+                [
+                    'foo' => [
                         'level2' => 'value2',
                         'level2.level3.level4' => 'value1',
                         'bar' => 'value3',
-                    ),
-                ),
-            ),
-        );
+                    ],
+                ],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php b/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
index 26a846ea90d9..dbcc14e6e1cc 100644
--- a/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
+++ b/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
@@ -43,7 +43,7 @@ public function testWrite()
 
         $writer = new TranslationWriter();
         $writer->addDumper('test', $dumper);
-        $writer->write(new MessageCatalogue(array()), 'test');
+        $writer->write(new MessageCatalogue([]), 'test');
     }
 
     public function testDisableBackup()
@@ -62,7 +62,7 @@ public function testDisableBackup()
 
 class NonBackupDumper implements DumperInterface
 {
-    public function dump(MessageCatalogue $messages, $options = array())
+    public function dump(MessageCatalogue $messages, $options = [])
     {
     }
 }
@@ -71,7 +71,7 @@ class BackupDumper implements DumperInterface
 {
     public $backup = true;
 
-    public function dump(MessageCatalogue $messages, $options = array())
+    public function dump(MessageCatalogue $messages, $options = [])
     {
     }
 
diff --git a/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php b/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
index 1ce8ea94fd33..11261311a1be 100644
--- a/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
+++ b/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
@@ -29,21 +29,21 @@
 <?php echo $view['translator']->transChoice(
     '{0} There is no apples|{1} There is one apple|]1,Inf[ There are %count% apples',
     10,
-    array('%count%' => 10)
+    ['%count%' => 10]
 ); ?>
 
-<?php echo $view['translator']->trans('other-domain-test-no-params-short-array', array(), 'not_messages'); ?>
+<?php echo $view['translator']->trans('other-domain-test-no-params-short-array', [], 'not_messages'); ?>
 
-<?php echo $view['translator']->trans('other-domain-test-no-params-long-array', array(), 'not_messages'); ?>
+<?php echo $view['translator']->trans('other-domain-test-no-params-long-array', [], 'not_messages'); ?>
 
-<?php echo $view['translator']->trans('other-domain-test-params-short-array', array('foo' => 'bar'), 'not_messages'); ?>
+<?php echo $view['translator']->trans('other-domain-test-params-short-array', ['foo' => 'bar'], 'not_messages'); ?>
 
-<?php echo $view['translator']->trans('other-domain-test-params-long-array', array('foo' => 'bar'), 'not_messages'); ?>
+<?php echo $view['translator']->trans('other-domain-test-params-long-array', ['foo' => 'bar'], 'not_messages'); ?>
 
-<?php echo $view['translator']->transChoice('other-domain-test-trans-choice-short-array-%count%', 10, array('%count%' => 10), 'not_messages'); ?>
+<?php echo $view['translator']->transChoice('other-domain-test-trans-choice-short-array-%count%', 10, ['%count%' => 10], 'not_messages'); ?>
 
-<?php echo $view['translator']->transChoice('other-domain-test-trans-choice-long-array-%count%', 10, array('%count%' => 10), 'not_messages'); ?>
+<?php echo $view['translator']->transChoice('other-domain-test-trans-choice-long-array-%count%', 10, ['%count%' => 10], 'not_messages'); ?>
 
-<?php echo $view['translator']->trans('typecast', array('a' => (int) '123'), 'not_messages'); ?>
-<?php echo $view['translator']->transChoice('msg1', 10 + 1, array(), 'not_messages'); ?>
-<?php echo $view['translator']->transChoice('msg2', ceil(4.5), array(), 'not_messages'); ?>
+<?php echo $view['translator']->trans('typecast', ['a' => (int) '123'], 'not_messages'); ?>
+<?php echo $view['translator']->transChoice('msg1', 10 + 1, [], 'not_messages'); ?>
+<?php echo $view['translator']->transChoice('msg2', ceil(4.5), [], 'not_messages'); ?>
diff --git a/src/Symfony/Component/Translation/Translator.php b/src/Symfony/Component/Translation/Translator.php
index c965a0bb4a71..e72d20a86f51 100644
--- a/src/Symfony/Component/Translation/Translator.php
+++ b/src/Symfony/Component/Translation/Translator.php
@@ -31,7 +31,7 @@ class Translator implements TranslatorInterface, TranslatorBagInterface
     /**
      * @var MessageCatalogueInterface[]
      */
-    protected $catalogues = array();
+    protected $catalogues = [];
 
     /**
      * @var string
@@ -41,17 +41,17 @@ class Translator implements TranslatorInterface, TranslatorBagInterface
     /**
      * @var array
      */
-    private $fallbackLocales = array();
+    private $fallbackLocales = [];
 
     /**
      * @var LoaderInterface[]
      */
-    private $loaders = array();
+    private $loaders = [];
 
     /**
      * @var array
      */
-    private $resources = array();
+    private $resources = [];
 
     /**
      * @var MessageFormatterInterface
@@ -131,10 +131,10 @@ public function addResource($format, $resource, $locale, $domain = null)
 
         $this->assertValidLocale($locale);
 
-        $this->resources[$locale][] = array($format, $resource, $domain);
+        $this->resources[$locale][] = [$format, $resource, $domain];
 
         if (\in_array($locale, $this->fallbackLocales)) {
-            $this->catalogues = array();
+            $this->catalogues = [];
         } else {
             unset($this->catalogues[$locale]);
         }
@@ -167,7 +167,7 @@ public function getLocale()
     public function setFallbackLocales(array $locales)
     {
         // needed as the fallback locales are linked to the already loaded catalogues
-        $this->catalogues = array();
+        $this->catalogues = [];
 
         foreach ($locales as $locale) {
             $this->assertValidLocale($locale);
@@ -189,7 +189,7 @@ public function getFallbackLocales()
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         if (null === $domain) {
             $domain = 'messages';
@@ -201,7 +201,7 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
     /**
      * {@inheritdoc}
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         if (!$this->formatter instanceof ChoiceMessageFormatterInterface) {
             throw new LogicException(sprintf('The formatter "%s" does not support plural translations.', \get_class($this->formatter)));
@@ -403,7 +403,7 @@ private function loadFallbackCatalogues($locale)
 
     protected function computeFallbackLocales($locale)
     {
-        $locales = array();
+        $locales = [];
         foreach ($this->fallbackLocales as $fallback) {
             if ($fallback === $locale) {
                 continue;
diff --git a/src/Symfony/Component/Translation/TranslatorInterface.php b/src/Symfony/Component/Translation/TranslatorInterface.php
index b5033a8bcf8e..4fbaedb457ff 100644
--- a/src/Symfony/Component/Translation/TranslatorInterface.php
+++ b/src/Symfony/Component/Translation/TranslatorInterface.php
@@ -32,7 +32,7 @@ interface TranslatorInterface
      *
      * @throws InvalidArgumentException If the locale contains invalid characters
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null);
+    public function trans($id, array $parameters = [], $domain = null, $locale = null);
 
     /**
      * Translates the given choice message by choosing a translation according to a number.
@@ -47,7 +47,7 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
      *
      * @throws InvalidArgumentException If the locale contains invalid characters
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null);
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null);
 
     /**
      * Sets the current locale.
diff --git a/src/Symfony/Component/Translation/Util/ArrayConverter.php b/src/Symfony/Component/Translation/Util/ArrayConverter.php
index e8b7559dfb1e..a45ae2dbba79 100644
--- a/src/Symfony/Component/Translation/Util/ArrayConverter.php
+++ b/src/Symfony/Component/Translation/Util/ArrayConverter.php
@@ -35,7 +35,7 @@ class ArrayConverter
      */
     public static function expandToTree(array $messages)
     {
-        $tree = array();
+        $tree = [];
 
         foreach ($messages as $id => $value) {
             $referenceToElement = &self::getElementByPath($tree, explode('.', $id));
diff --git a/src/Symfony/Component/Translation/Writer/TranslationWriter.php b/src/Symfony/Component/Translation/Writer/TranslationWriter.php
index 459f707faf94..aad6aad3e88f 100644
--- a/src/Symfony/Component/Translation/Writer/TranslationWriter.php
+++ b/src/Symfony/Component/Translation/Writer/TranslationWriter.php
@@ -23,7 +23,7 @@
  */
 class TranslationWriter implements TranslationWriterInterface
 {
-    private $dumpers = array();
+    private $dumpers = [];
 
     /**
      * Adds a dumper to the writer.
@@ -67,7 +67,7 @@ public function getFormats()
      *
      * @throws InvalidArgumentException
      */
-    public function write(MessageCatalogue $catalogue, $format, $options = array())
+    public function write(MessageCatalogue $catalogue, $format, $options = [])
     {
         if (!isset($this->dumpers[$format])) {
             throw new InvalidArgumentException(sprintf('There is no dumper associated with format "%s".', $format));
@@ -95,7 +95,7 @@ public function write(MessageCatalogue $catalogue, $format, $options = array())
      *
      * @deprecated since 3.4 will be removed in 4.0. Use write instead.
      */
-    public function writeTranslations(MessageCatalogue $catalogue, $format, $options = array())
+    public function writeTranslations(MessageCatalogue $catalogue, $format, $options = [])
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0. Use write() instead.', __METHOD__), E_USER_DEPRECATED);
         $this->write($catalogue, $format, $options);
diff --git a/src/Symfony/Component/Translation/Writer/TranslationWriterInterface.php b/src/Symfony/Component/Translation/Writer/TranslationWriterInterface.php
index 992ab769a0d5..b07c08e2366c 100644
--- a/src/Symfony/Component/Translation/Writer/TranslationWriterInterface.php
+++ b/src/Symfony/Component/Translation/Writer/TranslationWriterInterface.php
@@ -30,5 +30,5 @@ interface TranslationWriterInterface
      *
      * @throws InvalidArgumentException
      */
-    public function write(MessageCatalogue $catalogue, $format, $options = array());
+    public function write(MessageCatalogue $catalogue, $format, $options = []);
 }
diff --git a/src/Symfony/Component/Validator/Constraint.php b/src/Symfony/Component/Validator/Constraint.php
index f96705521133..4b7e6bc083a6 100644
--- a/src/Symfony/Component/Validator/Constraint.php
+++ b/src/Symfony/Component/Validator/Constraint.php
@@ -49,7 +49,7 @@ abstract class Constraint
     /**
      * Maps error codes to the names of their constants.
      */
-    protected static $errorNames = array();
+    protected static $errorNames = [];
 
     /**
      * Domain-specific data attached to a constraint.
@@ -105,7 +105,7 @@ public static function getErrorName($errorCode)
      */
     public function __construct($options = null)
     {
-        $invalidOptions = array();
+        $invalidOptions = [];
         $missingOptions = array_flip((array) $this->getRequiredOptions());
         $knownOptions = get_object_vars($this);
 
@@ -173,7 +173,7 @@ public function __set($option, $value)
             return;
         }
 
-        throw new InvalidOptionsException(sprintf('The option "%s" does not exist in constraint %s', $option, \get_class($this)), array($option));
+        throw new InvalidOptionsException(sprintf('The option "%s" does not exist in constraint %s', $option, \get_class($this)), [$option]);
     }
 
     /**
@@ -194,12 +194,12 @@ public function __set($option, $value)
     public function __get($option)
     {
         if ('groups' === $option) {
-            $this->groups = array(self::DEFAULT_GROUP);
+            $this->groups = [self::DEFAULT_GROUP];
 
             return $this->groups;
         }
 
-        throw new InvalidOptionsException(sprintf('The option "%s" does not exist in constraint %s', $option, \get_class($this)), array($option));
+        throw new InvalidOptionsException(sprintf('The option "%s" does not exist in constraint %s', $option, \get_class($this)), [$option]);
     }
 
     /**
@@ -248,7 +248,7 @@ public function getDefaultOption()
      */
     public function getRequiredOptions()
     {
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Component/Validator/ConstraintValidatorFactory.php b/src/Symfony/Component/Validator/ConstraintValidatorFactory.php
index 86e44e2a5580..45f3ca94e8e8 100644
--- a/src/Symfony/Component/Validator/ConstraintValidatorFactory.php
+++ b/src/Symfony/Component/Validator/ConstraintValidatorFactory.php
@@ -24,7 +24,7 @@
  */
 class ConstraintValidatorFactory implements ConstraintValidatorFactoryInterface
 {
-    protected $validators = array();
+    protected $validators = [];
 
     public function __construct()
     {
diff --git a/src/Symfony/Component/Validator/ConstraintViolationList.php b/src/Symfony/Component/Validator/ConstraintViolationList.php
index c18dd2195fab..c30ee57cb268 100644
--- a/src/Symfony/Component/Validator/ConstraintViolationList.php
+++ b/src/Symfony/Component/Validator/ConstraintViolationList.php
@@ -21,14 +21,14 @@ class ConstraintViolationList implements \IteratorAggregate, ConstraintViolation
     /**
      * @var ConstraintViolationInterface[]
      */
-    private $violations = array();
+    private $violations = [];
 
     /**
      * Creates a new constraint violation list.
      *
      * @param ConstraintViolationInterface[] $violations The constraint violations to add to the list
      */
-    public function __construct(array $violations = array())
+    public function __construct(array $violations = [])
     {
         foreach ($violations as $violation) {
             $this->add($violation);
@@ -169,7 +169,7 @@ public function offsetUnset($offset)
     public function findByCodes($codes)
     {
         $codes = (array) $codes;
-        $violations = array();
+        $violations = [];
         foreach ($this as $violation) {
             if (\in_array($violation->getCode(), $codes, true)) {
                 $violations[] = $violation;
diff --git a/src/Symfony/Component/Validator/ConstraintViolationListInterface.php b/src/Symfony/Component/Validator/ConstraintViolationListInterface.php
index 0489ab500a1d..47e986f51e50 100644
--- a/src/Symfony/Component/Validator/ConstraintViolationListInterface.php
+++ b/src/Symfony/Component/Validator/ConstraintViolationListInterface.php
@@ -26,7 +26,7 @@ public function add(ConstraintViolationInterface $violation);
     /**
      * Merges an existing violation list into this list.
      */
-    public function addAll(ConstraintViolationListInterface $otherList);
+    public function addAll(self $otherList);
 
     /**
      * Returns the violation at a given offset.
diff --git a/src/Symfony/Component/Validator/Constraints/AbstractComparison.php b/src/Symfony/Component/Validator/Constraints/AbstractComparison.php
index 0a7e2f3fb733..89c2690c081c 100644
--- a/src/Symfony/Component/Validator/Constraints/AbstractComparison.php
+++ b/src/Symfony/Component/Validator/Constraints/AbstractComparison.php
@@ -33,7 +33,7 @@ abstract class AbstractComparison extends Constraint
     public function __construct($options = null)
     {
         if (null === $options) {
-            $options = array();
+            $options = [];
         }
 
         if (\is_array($options)) {
diff --git a/src/Symfony/Component/Validator/Constraints/All.php b/src/Symfony/Component/Validator/Constraints/All.php
index b531a1d645af..d3fe49525f6f 100644
--- a/src/Symfony/Component/Validator/Constraints/All.php
+++ b/src/Symfony/Component/Validator/Constraints/All.php
@@ -19,7 +19,7 @@
  */
 class All extends Composite
 {
-    public $constraints = array();
+    public $constraints = [];
 
     public function getDefaultOption()
     {
@@ -28,7 +28,7 @@ public function getDefaultOption()
 
     public function getRequiredOptions()
     {
-        return array('constraints');
+        return ['constraints'];
     }
 
     protected function getCompositeOption()
diff --git a/src/Symfony/Component/Validator/Constraints/Bic.php b/src/Symfony/Component/Validator/Constraints/Bic.php
index dee5d526938e..5cb37b7df2b0 100644
--- a/src/Symfony/Component/Validator/Constraints/Bic.php
+++ b/src/Symfony/Component/Validator/Constraints/Bic.php
@@ -27,13 +27,13 @@ class Bic extends Constraint
     const INVALID_COUNTRY_CODE_ERROR = '1ce76f8d-3c1f-451c-9e62-fe9c3ed486ae';
     const INVALID_CASE_ERROR = '11884038-3312-4ae5-9d04-699f782130c7';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_LENGTH_ERROR => 'INVALID_LENGTH_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::INVALID_BANK_CODE_ERROR => 'INVALID_BANK_CODE_ERROR',
         self::INVALID_COUNTRY_CODE_ERROR => 'INVALID_COUNTRY_CODE_ERROR',
         self::INVALID_CASE_ERROR => 'INVALID_CASE_ERROR',
-    );
+    ];
 
     public $message = 'This is not a valid Business Identifier Code (BIC).';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/BicValidator.php b/src/Symfony/Component/Validator/Constraints/BicValidator.php
index 2a27beff9bf6..fc363461587e 100644
--- a/src/Symfony/Component/Validator/Constraints/BicValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/BicValidator.php
@@ -38,7 +38,7 @@ public function validate($value, Constraint $constraint)
         $canonicalize = str_replace(' ', '', $value);
 
         // the bic must be either 8 or 11 characters long
-        if (!\in_array(\strlen($canonicalize), array(8, 11))) {
+        if (!\in_array(\strlen($canonicalize), [8, 11])) {
             $this->context->buildViolation($constraint->message)
                 ->setParameter('{{ value }}', $this->formatValue($value))
                 ->setCode(Bic::INVALID_LENGTH_ERROR)
diff --git a/src/Symfony/Component/Validator/Constraints/Blank.php b/src/Symfony/Component/Validator/Constraints/Blank.php
index 030b21f959d9..4fa913c85f9b 100644
--- a/src/Symfony/Component/Validator/Constraints/Blank.php
+++ b/src/Symfony/Component/Validator/Constraints/Blank.php
@@ -23,9 +23,9 @@ class Blank extends Constraint
 {
     const NOT_BLANK_ERROR = '183ad2de-533d-4796-a439-6d3c3852b549';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_BLANK_ERROR => 'NOT_BLANK_ERROR',
-    );
+    ];
 
     public $message = 'This value should be blank.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Callback.php b/src/Symfony/Component/Validator/Constraints/Callback.php
index 16231105e1f2..8bf6d68cac6c 100644
--- a/src/Symfony/Component/Validator/Constraints/Callback.php
+++ b/src/Symfony/Component/Validator/Constraints/Callback.php
@@ -37,7 +37,7 @@ public function __construct($options = null)
         }
 
         if (\is_array($options) && !isset($options['callback']) && !isset($options['groups']) && !isset($options['payload'])) {
-            $options = array('callback' => $options);
+            $options = ['callback' => $options];
         }
 
         parent::__construct($options);
@@ -56,6 +56,6 @@ public function getDefaultOption()
      */
     public function getTargets()
     {
-        return array(self::CLASS_CONSTRAINT, self::PROPERTY_CONSTRAINT);
+        return [self::CLASS_CONSTRAINT, self::PROPERTY_CONSTRAINT];
     }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/CardScheme.php b/src/Symfony/Component/Validator/Constraints/CardScheme.php
index 40c32e879e83..4284826008da 100644
--- a/src/Symfony/Component/Validator/Constraints/CardScheme.php
+++ b/src/Symfony/Component/Validator/Constraints/CardScheme.php
@@ -27,10 +27,10 @@ class CardScheme extends Constraint
     const NOT_NUMERIC_ERROR = 'a2ad9231-e827-485f-8a1e-ef4d9a6d5c2e';
     const INVALID_FORMAT_ERROR = 'a8faedbf-1c2f-4695-8d22-55783be8efed';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_NUMERIC_ERROR => 'NOT_NUMERIC_ERROR',
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
-    );
+    ];
 
     public $message = 'Unsupported card type or invalid card number.';
     public $schemes;
@@ -42,6 +42,6 @@ public function getDefaultOption()
 
     public function getRequiredOptions()
     {
-        return array('schemes');
+        return ['schemes'];
     }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/CardSchemeValidator.php b/src/Symfony/Component/Validator/Constraints/CardSchemeValidator.php
index dae3412cd717..04abe81af364 100644
--- a/src/Symfony/Component/Validator/Constraints/CardSchemeValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/CardSchemeValidator.php
@@ -27,62 +27,62 @@
  */
 class CardSchemeValidator extends ConstraintValidator
 {
-    protected $schemes = array(
+    protected $schemes = [
         // American Express card numbers start with 34 or 37 and have 15 digits.
-        'AMEX' => array(
+        'AMEX' => [
             '/^3[47][0-9]{13}$/',
-        ),
+        ],
         // China UnionPay cards start with 62 and have between 16 and 19 digits.
         // Please note that these cards do not follow Luhn Algorithm as a checksum.
-        'CHINA_UNIONPAY' => array(
+        'CHINA_UNIONPAY' => [
             '/^62[0-9]{14,17}$/',
-        ),
+        ],
         // Diners Club card numbers begin with 300 through 305, 36 or 38. All have 14 digits.
         // There are Diners Club cards that begin with 5 and have 16 digits.
         // These are a joint venture between Diners Club and MasterCard, and should be processed like a MasterCard.
-        'DINERS' => array(
+        'DINERS' => [
             '/^3(?:0[0-5]|[68][0-9])[0-9]{11}$/',
-        ),
+        ],
         // Discover card numbers begin with 6011, 622126 through 622925, 644 through 649 or 65.
         // All have 16 digits.
-        'DISCOVER' => array(
+        'DISCOVER' => [
             '/^6011[0-9]{12}$/',
             '/^64[4-9][0-9]{13}$/',
             '/^65[0-9]{14}$/',
             '/^622(12[6-9]|1[3-9][0-9]|[2-8][0-9][0-9]|91[0-9]|92[0-5])[0-9]{10}$/',
-        ),
+        ],
         // InstaPayment cards begin with 637 through 639 and have 16 digits.
-        'INSTAPAYMENT' => array(
+        'INSTAPAYMENT' => [
             '/^63[7-9][0-9]{13}$/',
-        ),
+        ],
         // JCB cards beginning with 2131 or 1800 have 15 digits.
         // JCB cards beginning with 35 have 16 digits.
-        'JCB' => array(
+        'JCB' => [
             '/^(?:2131|1800|35[0-9]{3})[0-9]{11}$/',
-        ),
+        ],
         // Laser cards begin with either 6304, 6706, 6709 or 6771 and have between 16 and 19 digits.
-        'LASER' => array(
+        'LASER' => [
             '/^(6304|670[69]|6771)[0-9]{12,15}$/',
-        ),
+        ],
         // Maestro international cards begin with 675900..675999 and have between 12 and 19 digits.
         // Maestro UK cards begin with either 500000..509999 or 560000..699999 and have between 12 and 19 digits.
-        'MAESTRO' => array(
+        'MAESTRO' => [
             '/^(6759[0-9]{2})[0-9]{6,13}$/',
             '/^(50[0-9]{4})[0-9]{6,13}$/',
             '/^5[6-9][0-9]{10,17}$/',
             '/^6[0-9]{11,18}$/',
-        ),
+        ],
         // All MasterCard numbers start with the numbers 51 through 55. All have 16 digits.
         // October 2016 MasterCard numbers can also start with 222100 through 272099.
-        'MASTERCARD' => array(
+        'MASTERCARD' => [
             '/^5[1-5][0-9]{14}$/',
             '/^2(22[1-9][0-9]{12}|2[3-9][0-9]{13}|[3-6][0-9]{14}|7[0-1][0-9]{13}|720[0-9]{12})$/',
-        ),
+        ],
         // All Visa card numbers start with a 4 and have a length of 13, 16, or 19 digits.
-        'VISA' => array(
+        'VISA' => [
             '/^4([0-9]{12}|[0-9]{15}|[0-9]{18})$/',
-        ),
-    );
+        ],
+    ];
 
     /**
      * Validates a creditcard belongs to a specified scheme.
diff --git a/src/Symfony/Component/Validator/Constraints/Choice.php b/src/Symfony/Component/Validator/Constraints/Choice.php
index 4b93c70e4a5f..222dca3d5d60 100644
--- a/src/Symfony/Component/Validator/Constraints/Choice.php
+++ b/src/Symfony/Component/Validator/Constraints/Choice.php
@@ -25,11 +25,11 @@ class Choice extends Constraint
     const TOO_FEW_ERROR = '11edd7eb-5872-4b6e-9f12-89923999fd0e';
     const TOO_MANY_ERROR = '9bd98e49-211c-433f-8630-fd1c2d0f08c3';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NO_SUCH_CHOICE_ERROR => 'NO_SUCH_CHOICE_ERROR',
         self::TOO_FEW_ERROR => 'TOO_FEW_ERROR',
         self::TOO_MANY_ERROR => 'TOO_MANY_ERROR',
-    );
+    ];
 
     public $choices;
     public $callback;
diff --git a/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php b/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
index e53b99a0d839..00577ef46251 100644
--- a/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
@@ -47,8 +47,8 @@ public function validate($value, Constraint $constraint)
         }
 
         if ($constraint->callback) {
-            if (!\is_callable($choices = array($this->context->getObject(), $constraint->callback))
-                && !\is_callable($choices = array($this->context->getClassName(), $constraint->callback))
+            if (!\is_callable($choices = [$this->context->getObject(), $constraint->callback])
+                && !\is_callable($choices = [$this->context->getClassName(), $constraint->callback])
                 && !\is_callable($choices = $constraint->callback)
             ) {
                 throw new ConstraintDefinitionException('The Choice constraint expects a valid callback');
diff --git a/src/Symfony/Component/Validator/Constraints/Collection.php b/src/Symfony/Component/Validator/Constraints/Collection.php
index 2b5679b22d07..21427722d949 100644
--- a/src/Symfony/Component/Validator/Constraints/Collection.php
+++ b/src/Symfony/Component/Validator/Constraints/Collection.php
@@ -24,12 +24,12 @@ class Collection extends Composite
     const MISSING_FIELD_ERROR = '2fa2158c-2a7f-484b-98aa-975522539ff8';
     const NO_SUCH_FIELD_ERROR = '7703c766-b5d5-4cef-ace7-ae0dd82304e9';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::MISSING_FIELD_ERROR => 'MISSING_FIELD_ERROR',
         self::NO_SUCH_FIELD_ERROR => 'NO_SUCH_FIELD_ERROR',
-    );
+    ];
 
-    public $fields = array();
+    public $fields = [];
     public $allowExtraFields = false;
     public $allowMissingFields = false;
     public $extraFieldsMessage = 'This field was not expected.';
@@ -42,8 +42,8 @@ public function __construct($options = null)
     {
         // no known options set? $options is the fields array
         if (\is_array($options)
-            && !array_intersect(array_keys($options), array('groups', 'fields', 'allowExtraFields', 'allowMissingFields', 'extraFieldsMessage', 'missingFieldsMessage'))) {
-            $options = array('fields' => $options);
+            && !array_intersect(array_keys($options), ['groups', 'fields', 'allowExtraFields', 'allowMissingFields', 'extraFieldsMessage', 'missingFieldsMessage'])) {
+            $options = ['fields' => $options];
         }
 
         parent::__construct($options);
@@ -75,7 +75,7 @@ protected function initializeNestedConstraints()
 
     public function getRequiredOptions()
     {
-        return array('fields');
+        return ['fields'];
     }
 
     protected function getCompositeOption()
diff --git a/src/Symfony/Component/Validator/Constraints/Composite.php b/src/Symfony/Component/Validator/Constraints/Composite.php
index d233f06335e1..18ea5e319f7f 100644
--- a/src/Symfony/Component/Validator/Constraints/Composite.php
+++ b/src/Symfony/Component/Validator/Constraints/Composite.php
@@ -62,7 +62,7 @@ public function __construct($options = null)
         $nestedConstraints = $this->$compositeOption;
 
         if (!\is_array($nestedConstraints)) {
-            $nestedConstraints = array($nestedConstraints);
+            $nestedConstraints = [$nestedConstraints];
         }
 
         foreach ($nestedConstraints as $constraint) {
@@ -80,7 +80,7 @@ public function __construct($options = null)
         }
 
         if (!property_exists($this, 'groups')) {
-            $mergedGroups = array();
+            $mergedGroups = [];
 
             foreach ($nestedConstraints as $constraint) {
                 foreach ($constraint->groups as $group) {
diff --git a/src/Symfony/Component/Validator/Constraints/Count.php b/src/Symfony/Component/Validator/Constraints/Count.php
index 0a54ee78db77..8de10edfc880 100644
--- a/src/Symfony/Component/Validator/Constraints/Count.php
+++ b/src/Symfony/Component/Validator/Constraints/Count.php
@@ -25,10 +25,10 @@ class Count extends Constraint
     const TOO_FEW_ERROR = 'bef8e338-6ae5-4caf-b8e2-50e7b0579e69';
     const TOO_MANY_ERROR = '756b1212-697c-468d-a9ad-50dd783bb169';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_FEW_ERROR => 'TOO_FEW_ERROR',
         self::TOO_MANY_ERROR => 'TOO_MANY_ERROR',
-    );
+    ];
 
     public $minMessage = 'This collection should contain {{ limit }} element or more.|This collection should contain {{ limit }} elements or more.';
     public $maxMessage = 'This collection should contain {{ limit }} element or less.|This collection should contain {{ limit }} elements or less.';
@@ -39,16 +39,16 @@ class Count extends Constraint
     public function __construct($options = null)
     {
         if (null !== $options && !\is_array($options)) {
-            $options = array(
+            $options = [
                 'min' => $options,
                 'max' => $options,
-            );
+            ];
         }
 
         parent::__construct($options);
 
         if (null === $this->min && null === $this->max) {
-            throw new MissingOptionsException(sprintf('Either option "min" or "max" must be given for constraint %s', __CLASS__), array('min', 'max'));
+            throw new MissingOptionsException(sprintf('Either option "min" or "max" must be given for constraint %s', __CLASS__), ['min', 'max']);
         }
     }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Country.php b/src/Symfony/Component/Validator/Constraints/Country.php
index 1b76570a8c5f..7ed2e0582ed9 100644
--- a/src/Symfony/Component/Validator/Constraints/Country.php
+++ b/src/Symfony/Component/Validator/Constraints/Country.php
@@ -23,9 +23,9 @@ class Country extends Constraint
 {
     const NO_SUCH_COUNTRY_ERROR = '8f900c12-61bd-455d-9398-996cd040f7f0';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NO_SUCH_COUNTRY_ERROR => 'NO_SUCH_COUNTRY_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid country.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Currency.php b/src/Symfony/Component/Validator/Constraints/Currency.php
index d28f94cb66a7..5d5ced59df9d 100644
--- a/src/Symfony/Component/Validator/Constraints/Currency.php
+++ b/src/Symfony/Component/Validator/Constraints/Currency.php
@@ -24,9 +24,9 @@ class Currency extends Constraint
 {
     const NO_SUCH_CURRENCY_ERROR = '69945ac1-2db4-405f-bec7-d2772f73df52';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NO_SUCH_CURRENCY_ERROR => 'NO_SUCH_CURRENCY_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid currency.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Date.php b/src/Symfony/Component/Validator/Constraints/Date.php
index 256341312246..530475ff7d0a 100644
--- a/src/Symfony/Component/Validator/Constraints/Date.php
+++ b/src/Symfony/Component/Validator/Constraints/Date.php
@@ -24,10 +24,10 @@ class Date extends Constraint
     const INVALID_FORMAT_ERROR = '69819696-02ac-4a99-9ff0-14e127c4d1bc';
     const INVALID_DATE_ERROR = '3c184ce5-b31d-4de7-8b76-326da7b2be93';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
         self::INVALID_DATE_ERROR => 'INVALID_DATE_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid date.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/DateTime.php b/src/Symfony/Component/Validator/Constraints/DateTime.php
index c65f185ae428..f88c62e0aea5 100644
--- a/src/Symfony/Component/Validator/Constraints/DateTime.php
+++ b/src/Symfony/Component/Validator/Constraints/DateTime.php
@@ -25,11 +25,11 @@ class DateTime extends Constraint
     const INVALID_DATE_ERROR = 'd52afa47-620d-4d99-9f08-f4d85b36e33c';
     const INVALID_TIME_ERROR = '5e797c9d-74f7-4098-baa3-94390c447b27';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
         self::INVALID_DATE_ERROR => 'INVALID_DATE_ERROR',
         self::INVALID_TIME_ERROR => 'INVALID_TIME_ERROR',
-    );
+    ];
 
     public $format = 'Y-m-d H:i:s';
     public $message = 'This value is not a valid datetime.';
diff --git a/src/Symfony/Component/Validator/Constraints/Email.php b/src/Symfony/Component/Validator/Constraints/Email.php
index a9d9ab15391f..56ddd3da65ae 100644
--- a/src/Symfony/Component/Validator/Constraints/Email.php
+++ b/src/Symfony/Component/Validator/Constraints/Email.php
@@ -25,11 +25,11 @@ class Email extends Constraint
     const MX_CHECK_FAILED_ERROR = 'bf447c1c-0266-4e10-9c6c-573df282e413';
     const HOST_CHECK_FAILED_ERROR = '7da53a8b-56f3-4288-bb3e-ee9ede4ef9a1';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_FORMAT_ERROR => 'STRICT_CHECK_FAILED_ERROR',
         self::MX_CHECK_FAILED_ERROR => 'MX_CHECK_FAILED_ERROR',
         self::HOST_CHECK_FAILED_ERROR => 'HOST_CHECK_FAILED_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid email address.';
     public $checkMX = false;
diff --git a/src/Symfony/Component/Validator/Constraints/EqualTo.php b/src/Symfony/Component/Validator/Constraints/EqualTo.php
index 4b22c6dcca3e..ccd67675e736 100644
--- a/src/Symfony/Component/Validator/Constraints/EqualTo.php
+++ b/src/Symfony/Component/Validator/Constraints/EqualTo.php
@@ -22,9 +22,9 @@ class EqualTo extends AbstractComparison
 {
     const NOT_EQUAL_ERROR = '478618a7-95ba-473d-9101-cabd45e49115';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_EQUAL_ERROR => 'NOT_EQUAL_ERROR',
-    );
+    ];
 
     public $message = 'This value should be equal to {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Existence.php b/src/Symfony/Component/Validator/Constraints/Existence.php
index 5ea6ffe643ee..903cf63913cf 100644
--- a/src/Symfony/Component/Validator/Constraints/Existence.php
+++ b/src/Symfony/Component/Validator/Constraints/Existence.php
@@ -16,7 +16,7 @@
  */
 abstract class Existence extends Composite
 {
-    public $constraints = array();
+    public $constraints = [];
 
     public function getDefaultOption()
     {
diff --git a/src/Symfony/Component/Validator/Constraints/Expression.php b/src/Symfony/Component/Validator/Constraints/Expression.php
index 3329bd249402..23eea2093f56 100644
--- a/src/Symfony/Component/Validator/Constraints/Expression.php
+++ b/src/Symfony/Component/Validator/Constraints/Expression.php
@@ -24,9 +24,9 @@ class Expression extends Constraint
 {
     const EXPRESSION_FAILED_ERROR = '6b3befbc-2f01-4ddf-be21-b57898905284';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::EXPRESSION_FAILED_ERROR => 'EXPRESSION_FAILED_ERROR',
-    );
+    ];
 
     public $message = 'This value is not valid.';
     public $expression;
@@ -44,7 +44,7 @@ public function getDefaultOption()
      */
     public function getRequiredOptions()
     {
-        return array('expression');
+        return ['expression'];
     }
 
     /**
@@ -52,7 +52,7 @@ public function getRequiredOptions()
      */
     public function getTargets()
     {
-        return array(self::CLASS_CONSTRAINT, self::PROPERTY_CONSTRAINT);
+        return [self::CLASS_CONSTRAINT, self::PROPERTY_CONSTRAINT];
     }
 
     /**
diff --git a/src/Symfony/Component/Validator/Constraints/ExpressionValidator.php b/src/Symfony/Component/Validator/Constraints/ExpressionValidator.php
index ce77d9ba843a..a4dfadbfc03b 100644
--- a/src/Symfony/Component/Validator/Constraints/ExpressionValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/ExpressionValidator.php
@@ -39,7 +39,7 @@ public function validate($value, Constraint $constraint)
             throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Expression');
         }
 
-        $variables = array();
+        $variables = [];
         $variables['value'] = $value;
         $variables['this'] = $this->context->getObject();
 
diff --git a/src/Symfony/Component/Validator/Constraints/File.php b/src/Symfony/Component/Validator/Constraints/File.php
index 1e191382abe1..5221857101af 100644
--- a/src/Symfony/Component/Validator/Constraints/File.php
+++ b/src/Symfony/Component/Validator/Constraints/File.php
@@ -32,16 +32,16 @@ class File extends Constraint
     const TOO_LARGE_ERROR = 'df8637af-d466-48c6-a59d-e7126250a654';
     const INVALID_MIME_TYPE_ERROR = '744f00bc-4389-4c74-92de-9a43cde55534';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_FOUND_ERROR => 'NOT_FOUND_ERROR',
         self::NOT_READABLE_ERROR => 'NOT_READABLE_ERROR',
         self::EMPTY_ERROR => 'EMPTY_ERROR',
         self::TOO_LARGE_ERROR => 'TOO_LARGE_ERROR',
         self::INVALID_MIME_TYPE_ERROR => 'INVALID_MIME_TYPE_ERROR',
-    );
+    ];
 
     public $binaryFormat;
-    public $mimeTypes = array();
+    public $mimeTypes = [];
     public $notFoundMessage = 'The file could not be found.';
     public $notReadableMessage = 'The file is not readable.';
     public $maxSizeMessage = 'The file is too large ({{ size }} {{ suffix }}). Allowed maximum size is {{ limit }} {{ suffix }}.';
@@ -99,12 +99,12 @@ public function __isset($option)
 
     private function normalizeBinaryFormat($maxSize)
     {
-        $factors = array(
+        $factors = [
             'k' => 1000,
             'ki' => 1 << 10,
             'm' => 1000000,
             'mi' => 1 << 20,
-        );
+        ];
         if (ctype_digit((string) $maxSize)) {
             $this->maxSize = (int) $maxSize;
             $this->binaryFormat = null === $this->binaryFormat ? false : $this->binaryFormat;
diff --git a/src/Symfony/Component/Validator/Constraints/FileValidator.php b/src/Symfony/Component/Validator/Constraints/FileValidator.php
index 7b556775df5d..d3e3833ab72c 100644
--- a/src/Symfony/Component/Validator/Constraints/FileValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/FileValidator.php
@@ -27,13 +27,13 @@ class FileValidator extends ConstraintValidator
     const KIB_BYTES = 1024;
     const MIB_BYTES = 1048576;
 
-    private static $suffices = array(
+    private static $suffices = [
         1 => 'bytes',
         self::KB_BYTES => 'kB',
         self::MB_BYTES => 'MB',
         self::KIB_BYTES => 'KiB',
         self::MIB_BYTES => 'MiB',
-    );
+    ];
 
     /**
      * {@inheritdoc}
@@ -233,6 +233,6 @@ pri
10000
vate function factorizeSizes($size, $limit, $binaryFormat)
             $sizeAsString = (string) round($size / $coef, 2);
         }
 
-        return array($sizeAsString, $limitAsString, self::$suffices[$coef]);
+        return [$sizeAsString, $limitAsString, self::$suffices[$coef]];
     }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/GreaterThan.php b/src/Symfony/Component/Validator/Constraints/GreaterThan.php
index c2ca2dcb82f2..ba225b44b615 100644
--- a/src/Symfony/Component/Validator/Constraints/GreaterThan.php
+++ b/src/Symfony/Component/Validator/Constraints/GreaterThan.php
@@ -22,9 +22,9 @@ class GreaterThan extends AbstractComparison
 {
     const TOO_LOW_ERROR = '778b7ae0-84d3-481a-9dec-35fdb64b1d78';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_LOW_ERROR => 'TOO_LOW_ERROR',
-    );
+    ];
 
     public $message = 'This value should be greater than {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/GreaterThanOrEqual.php b/src/Symfony/Component/Validator/Constraints/GreaterThanOrEqual.php
index 9b3743d07321..2c88f3ad05fb 100644
--- a/src/Symfony/Component/Validator/Constraints/GreaterThanOrEqual.php
+++ b/src/Symfony/Component/Validator/Constraints/GreaterThanOrEqual.php
@@ -22,9 +22,9 @@ class GreaterThanOrEqual extends AbstractComparison
 {
     const TOO_LOW_ERROR = 'ea4e51d1-3342-48bd-87f1-9e672cd90cad';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_LOW_ERROR => 'TOO_LOW_ERROR',
-    );
+    ];
 
     public $message = 'This value should be greater than or equal to {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Iban.php b/src/Symfony/Component/Validator/Constraints/Iban.php
index bcb30655aa44..231f8c838dd5 100644
--- a/src/Symfony/Component/Validator/Constraints/Iban.php
+++ b/src/Symfony/Component/Validator/Constraints/Iban.php
@@ -29,13 +29,13 @@ class Iban extends Constraint
     const INVALID_FORMAT_ERROR = 'c8d318f1-2ecc-41ba-b983-df70d225cf5a';
     const NOT_SUPPORTED_COUNTRY_CODE_ERROR = 'e2c259f3-4b46-48e6-b72e-891658158ec8';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_COUNTRY_CODE_ERROR => 'INVALID_COUNTRY_CODE_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::CHECKSUM_FAILED_ERROR => 'CHECKSUM_FAILED_ERROR',
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
         self::NOT_SUPPORTED_COUNTRY_CODE_ERROR => 'NOT_SUPPORTED_COUNTRY_CODE_ERROR',
-    );
+    ];
 
     public $message = 'This is not a valid International Bank Account Number (IBAN).';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/IbanValidator.php b/src/Symfony/Component/Validator/Constraints/IbanValidator.php
index 00f65049d038..fc14eea7dbe4 100644
--- a/src/Symfony/Component/Validator/Constraints/IbanValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/IbanValidator.php
@@ -35,7 +35,7 @@ class IbanValidator extends ConstraintValidator
      *
      * @see https://www.swift.com/sites/default/files/resources/iban_registry.pdf
      */
-    private static $formats = array(
+    private static $formats = [
         'AD' => 'AD\d{2}\d{4}\d{4}[\dA-Z]{12}', // Andorra
         'AE' => 'AE\d{2}\d{3}\d{16}', // United Arab Emirates
         'AL' => 'AL\d{2}\d{8}[\dA-Z]{16}', // Albania
@@ -134,7 +134,7 @@ class IbanValidator extends ConstraintValidator
         'WF' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Wallis and Futuna Islands
         'XK' => 'XK\d{2}\d{4}\d{10}\d{2}', // Republic of Kosovo
         'YT' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Mayotte
-    );
+    ];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/Validator/Constraints/IdenticalTo.php b/src/Symfony/Component/Validator/Constraints/IdenticalTo.php
index a7dadff833c5..6c1bc2b1d764 100644
--- a/src/Symfony/Component/Validator/Constraints/IdenticalTo.php
+++ b/src/Symfony/Component/Validator/Constraints/IdenticalTo.php
@@ -22,9 +22,9 @@ class IdenticalTo extends AbstractComparison
 {
     const NOT_IDENTICAL_ERROR = '2a8cc50f-58a2-4536-875e-060a2ce69ed5';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_IDENTICAL_ERROR => 'NOT_IDENTICAL_ERROR',
-    );
+    ];
 
     public $message = 'This value should be identical to {{ compared_value_type }} {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Image.php b/src/Symfony/Component/Validator/Constraints/Image.php
index c3c2c7a237a8..21005d9ea553 100644
--- a/src/Symfony/Component/Validator/Constraints/Image.php
+++ b/src/Symfony/Component/Validator/Constraints/Image.php
@@ -36,7 +36,7 @@ class Image extends File
 
     // Include the mapping from the base class
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_FOUND_ERROR => 'NOT_FOUND_ERROR',
         self::NOT_READABLE_ERROR => 'NOT_READABLE_ERROR',
         self::EMPTY_ERROR => 'EMPTY_ERROR',
@@ -55,7 +55,7 @@ class Image extends File
         self::LANDSCAPE_NOT_ALLOWED_ERROR => 'LANDSCAPE_NOT_ALLOWED_ERROR',
         self::PORTRAIT_NOT_ALLOWED_ERROR => 'PORTRAIT_NOT_ALLOWED_ERROR',
         self::CORRUPTED_IMAGE_ERROR => 'CORRUPTED_IMAGE_ERROR',
-    );
+    ];
 
     public $mimeTypes = 'image/*';
     public $minWidth;
diff --git a/src/Symfony/Component/Validator/Constraints/Ip.php b/src/Symfony/Component/Validator/Constraints/Ip.php
index f45c4cacebca..aff99d4672d7 100644
--- a/src/Symfony/Component/Validator/Constraints/Ip.php
+++ b/src/Symfony/Component/Validator/Constraints/Ip.php
@@ -46,7 +46,7 @@ class Ip extends Constraint
 
     const INVALID_IP_ERROR = 'b1b427ae-9f6f-41b0-aa9b-84511fbb3c5b';
 
-    protected static $versions = array(
+    protected static $versions = [
         self::V4,
         self::V6,
         self::ALL,
@@ -62,11 +62,11 @@ class Ip extends Constraint
         self::V4_ONLY_PUBLIC,
         self::V6_ONLY_PUBLIC,
         self::ALL_ONLY_PUBLIC,
-    );
+    ];
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_IP_ERROR => 'INVALID_IP_ERROR',
-    );
+    ];
 
     public $version = self::V4;
 
diff --git a/src/Symfony/Component/Validator/Constraints/IsFalse.php b/src/Symfony/Component/Validator/Constraints/IsFalse.php
index 8332e1874f5c..d488c616dd42 100644
--- a/src/Symfony/Component/Validator/Constraints/IsFalse.php
+++ b/src/Symfony/Component/Validator/Constraints/IsFalse.php
@@ -23,9 +23,9 @@ class IsFalse extends Constraint
 {
     const NOT_FALSE_ERROR = 'd53a91b0-def3-426a-83d7-269da7ab4200';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_FALSE_ERROR => 'NOT_FALSE_ERROR',
-    );
+    ];
 
     public $message = 'This value should be false.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/IsNull.php b/src/Symfony/Component/Validator/Constraints/IsNull.php
index fdd2930916ec..e010f9cf0696 100644
--- a/src/Symfony/Component/Validator/Constraints/IsNull.php
+++ b/src/Symfony/Component/Validator/Constraints/IsNull.php
@@ -23,9 +23,9 @@ class IsNull extends Constraint
 {
     const NOT_NULL_ERROR = '60d2f30b-8cfa-4372-b155-9656634de120';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_NULL_ERROR => 'NOT_NULL_ERROR',
-    );
+    ];
 
     public $message = 'This value should be null.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/IsTrue.php b/src/Symfony/Component/Validator/Constraints/IsTrue.php
index 405a96a422d1..84f6ce15a7c1 100644
--- a/src/Symfony/Component/Validator/Constraints/IsTrue.php
+++ b/src/Symfony/Component/Validator/Constraints/IsTrue.php
@@ -23,9 +23,9 @@ class IsTrue extends Constraint
 {
     const NOT_TRUE_ERROR = '2beabf1c-54c0-4882-a928-05249b26e23b';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_TRUE_ERROR => 'NOT_TRUE_ERROR',
-    );
+    ];
 
     public $message = 'This value should be true.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Isbn.php b/src/Symfony/Component/Validator/Constraints/Isbn.php
index 615feb66416d..6629c823e1aa 100644
--- a/src/Symfony/Component/Validator/Constraints/Isbn.php
+++ b/src/Symfony/Component/Validator/Constraints/Isbn.php
@@ -29,13 +29,13 @@ class Isbn extends Constraint
     const CHECKSUM_FAILED_ERROR = '2881c032-660f-46b6-8153-d352d9706640';
     const TYPE_NOT_RECOGNIZED_ERROR = 'fa54a457-f042-441f-89c4-066ee5bdd3e1';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::CHECKSUM_FAILED_ERROR => 'CHECKSUM_FAILED_ERROR',
         self::TYPE_NOT_RECOGNIZED_ERROR => 'TYPE_NOT_RECOGNIZED_ERROR',
-    );
+    ];
 
     public $isbn10Message = 'This value is not a valid ISBN-10.';
     public $isbn13Message = 'This value is not a valid ISBN-13.';
diff --git a/src/Symfony/Component/Validator/Constraints/Issn.php b/src/Symfony/Component/Validator/Constraints/Issn.php
index a2fecdd35c38..88d181fa63af 100644
--- a/src/Symfony/Component/Validator/Constraints/Issn.php
+++ b/src/Symfony/Component/Validator/Constraints/Issn.php
@@ -29,14 +29,14 @@ class Issn extends Constraint
     const INVALID_CASE_ERROR = '7b6dd393-7523-4a6c-b84d-72b91bba5e1a';
     const CHECKSUM_FAILED_ERROR = 'b0f92dbc-667c-48de-b526-ad9586d43e85';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::MISSING_HYPHEN_ERROR => 'MISSING_HYPHEN_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::INVALID_CASE_ERROR => 'INVALID_CASE_ERROR',
         self::CHECKSUM_FAILED_ERROR => 'CHECKSUM_FAILED_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid ISSN.';
     public $caseSensitive = false;
diff --git a/src/Symfony/Component/Validator/Constraints/Language.php b/src/Symfony/Component/Validator/Constraints/Language.php
index 0e676b7aabcd..745eb2055b68 100644
--- a/src/Symfony/Component/Validator/Constraints/Language.php
+++ b/src/Symfony/Component/Validator/Constraints/Language.php
@@ -23,9 +23,9 @@ class Language extends Constraint
 {
     const NO_SUCH_LANGUAGE_ERROR = 'ee65fec4-9a20-4202-9f39-ca558cd7bdf7';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NO_SUCH_LANGUAGE_ERROR => 'NO_SUCH_LANGUAGE_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid language.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Length.php b/src/Symfony/Component/Validator/Constraints/Length.php
index 20a17fabca55..79aa473204ea 100644
--- a/src/Symfony/Component/Validator/Constraints/Length.php
+++ b/src/Symfony/Component/Validator/Constraints/Length.php
@@ -26,11 +26,11 @@ class Length extends Constraint
     const TOO_LONG_ERROR = 'd94b19cc-114f-4f44-9cc4-4138e80a87b9';
     const INVALID_CHARACTERS_ERROR = '35e6a710-aa2e-4719-b58e-24b35749b767';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
-    );
+    ];
 
     public $maxMessage = 'This value is too long. It should have {{ limit }} character or less.|This value is too long. It should have {{ limit }} characters or less.';
     public $minMessage = 'This value is too short. It should have {{ limit }} character or more.|This value is too short. It should have {{ limit }} characters or more.';
@@ -43,16 +43,16 @@ class Length extends Constraint
     public function __construct($options = null)
     {
         if (null !== $options && !\is_array($options)) {
-            $options = array(
+            $options = [
                 'min' => $options,
                 'max' => $options,
-            );
+            ];
         }
 
         parent::__construct($options);
 
         if (null === $this->min && null === $this->max) {
-            throw new MissingOptionsException(sprintf('Either option "min" or "max" must be given for constraint %s', __CLASS__), array('min', 'max'));
+            throw new MissingOptionsException(sprintf('Either option "min" or "max" must be given for constraint %s', __CLASS__), ['min', 'max']);
         }
     }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/LessThan.php b/src/Symfony/Component/Validator/Constraints/LessThan.php
index 1bbb50878b1a..8ea07ace2e84 100644
--- a/src/Symfony/Component/Validator/Constraints/LessThan.php
+++ b/src/Symfony/Component/Validator/Constraints/LessThan.php
@@ -22,9 +22,9 @@ class LessThan extends AbstractComparison
 {
     const TOO_HIGH_ERROR = '079d7420-2d13-460c-8756-de810eeb37d2';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_HIGH_ERROR => 'TOO_HIGH_ERROR',
-    );
+    ];
 
     public $message = 'This value should be less than {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/LessThanOrEqual.php b/src/Symfony/Component/Validator/Constraints/LessThanOrEqual.php
index d118942385c5..74f7aeb8fade 100644
--- a/src/Symfony/Component/Validator/Constraints/LessThanOrEqual.php
+++ b/src/Symfony/Component/Validator/Constraints/LessThanOrEqual.php
@@ -22,9 +22,9 @@ class LessThanOrEqual extends AbstractComparison
 {
     const TOO_HIGH_ERROR = '079d7420-2d13-460c-8756-de810eeb37d2';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_HIGH_ERROR => 'TOO_HIGH_ERROR',
-    );
+    ];
 
     public $message = 'This value should be less than or equal to {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Locale.php b/src/Symfony/Component/Validator/Constraints/Locale.php
index 5aa7070402e2..759f99e1909e 100644
--- a/src/Symfony/Component/Validator/Constraints/Locale.php
+++ b/src/Symfony/Component/Validator/Constraints/Locale.php
@@ -23,9 +23,9 @@ class Locale extends Constraint
 {
     const NO_SUCH_LOCALE_ERROR = 'a0af4293-1f1a-4a1c-a328-979cba6182a2';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NO_SUCH_LOCALE_ERROR => 'NO_SUCH_LOCALE_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid locale.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Luhn.php b/src/Symfony/Component/Validator/Constraints/Luhn.php
index 67f152d29dc5..85eebc793bea 100644
--- a/src/Symfony/Component/Validator/Constraints/Luhn.php
+++ b/src/Symfony/Component/Validator/Constraints/Luhn.php
@@ -28,10 +28,10 @@ class Luhn extends Constraint
     const INVALID_CHARACTERS_ERROR = 'dfad6d23-1b74-4374-929b-5cbb56fc0d9e';
     const CHECKSUM_FAILED_ERROR = '4d760774-3f50-4cd5-a6d5-b10a3299d8d3';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::CHECKSUM_FAILED_ERROR => 'CHECKSUM_FAILED_ERROR',
-    );
+    ];
 
     public $message = 'Invalid card number.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/NotBlank.php b/src/Symfony/Component/Validator/Constraints/NotBlank.php
index e059f1028a2c..7616c426c7da 100644
--- a/src/Symfony/Component/Validator/Constraints/NotBlank.php
+++ b/src/Symfony/Component/Validator/Constraints/NotBlank.php
@@ -23,9 +23,9 @@ class NotBlank extends Constraint
 {
     const IS_BLANK_ERROR = 'c1051bb4-d103-4f74-8988-acbcafc7fdc3';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::IS_BLANK_ERROR => 'IS_BLANK_ERROR',
-    );
+    ];
 
     public $message = 'This value should not be blank.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/NotEqualTo.php b/src/Symfony/Component/Validator/Constraints/NotEqualTo.php
index 8c5abddaee42..a04f3a9b6c4b 100644
--- a/src/Symfony/Component/Validator/Constraints/NotEqualTo.php
+++ b/src/Symfony/Component/Validator/Constraints/NotEqualTo.php
@@ -22,9 +22,9 @@ class NotEqualTo extends AbstractComparison
 {
     const IS_EQUAL_ERROR = 'aa2e33da-25c8-4d76-8c6c-812f02ea89dd';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::IS_EQUAL_ERROR => 'IS_EQUAL_ERROR',
-    );
+    ];
 
     public $message = 'This value should not be equal to {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/NotIdenticalTo.php b/src/Symfony/Component/Validator/Constraints/NotIdenticalTo.php
index 4c9c63ea61e4..972e4a103c24 100644
--- a/src/Symfony/Component/Validator/Constraints/NotIdenticalTo.php
+++ b/src/Symfony/Component/Validator/Constraints/NotIdenticalTo.php
@@ -22,9 +22,9 @@ class NotIdenticalTo extends AbstractComparison
 {
     const IS_IDENTICAL_ERROR = '4aaac518-0dda-4129-a6d9-e216b9b454a0';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::IS_IDENTICAL_ERROR => 'IS_IDENTICAL_ERROR',
-    );
+    ];
 
     public $message = 'This value should not be identical to {{ compared_value_type }} {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/NotNull.php b/src/Symfony/Component/Validator/Constraints/NotNull.php
index 1cfc1c80ecc0..a392104d0e66 100644
--- a/src/Symfony/Component/Validator/Constraints/NotNull.php
+++ b/src/Symfony/Component/Validator/Constraints/NotNull.php
@@ -23,9 +23,9 @@ class NotNull extends Constraint
 {
     const IS_NULL_ERROR = 'ad32d13f-c3d4-423b-909a-857b961eb720';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::IS_NULL_ERROR => 'IS_NULL_ERROR',
-    );
+    ];
 
     public $message = 'This value should not be null.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Range.php b/src/Symfony/Component/Validator/Constraints/Range.php
index dcaf9db95524..65ece5d83200 100644
--- a/src/Symfony/Component/Validator/Constraints/Range.php
+++ b/src/Symfony/Component/Validator/Constraints/Range.php
@@ -26,11 +26,11 @@ class Range extends Constraint
     const TOO_HIGH_ERROR = '2d28afcb-e32e-45fb-a815-01c431a86a69';
     const TOO_LOW_ERROR = '76454e69-502c-46c5-9643-f447d837c4d5';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::TOO_HIGH_ERROR => 'TOO_HIGH_ERROR',
         self::TOO_LOW_ERROR => 'TOO_LOW_ERROR',
-    );
+    ];
 
     public $minMessage = 'This value should be {{ limit }} or more.';
     public $maxMessage = 'This value should be {{ limit }} or less.';
@@ -43,7 +43,7 @@ public function __construct($options = null)
         parent::__construct($options);
 
         if (null === $this->min && null === $this->max) {
-            throw new MissingOptionsException(sprintf('Either option "min" or "max" must be given for constraint %s', __CLASS__), array('min', 'max'));
+            throw new MissingOptionsException(sprintf('Either option "min" or "max" must be given for constraint %s', __CLASS__), ['min', 'max']);
         }
     }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Regex.php b/src/Symfony/Component/Validator/Constraints/Regex.php
index cb122102259c..a71e4de2590e 100644
--- a/src/Symfony/Component/Validator/Constraints/Regex.php
+++ b/src/Symfony/Component/Validator/Constraints/Regex.php
@@ -23,9 +23,9 @@ class Regex extends Constraint
 {
     const REGEX_FAILED_ERROR = 'de1e3db3-5ed4-4941-aae4-59f3667cc3a3';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::REGEX_FAILED_ERROR => 'REGEX_FAILED_ERROR',
-    );
+    ];
 
     public $message = 'This value is not valid.';
     public $pattern;
@@ -45,7 +45,7 @@ public function getDefaultOption()
      */
     public function getRequiredOptions()
     {
-        return array('pattern');
+        return ['pattern'];
     }
 
     /**
diff --git a/src/Symfony/Component/Validator/Constraints/Time.php b/src/Symfony/Component/Validator/Constraints/Time.php
index 6bd8dbda2e2a..d1a3397b240a 100644
--- a/src/Symfony/Component/Validator/Constraints/Time.php
+++ b/src/Symfony/Component/Validator/Constraints/Time.php
@@ -24,10 +24,10 @@ class Time extends Constraint
     const INVALID_FORMAT_ERROR = '9d27b2bb-f755-4fbf-b725-39b1edbdebdf';
     const INVALID_TIME_ERROR = '8532f9e1-84b2-4d67-8989-0818bc38533b';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
         self::INVALID_TIME_ERROR => 'INVALID_TIME_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid time.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Type.php b/src/Symfony/Component/Validator/Constraints/Type.php
index e40b47820d6b..ac798bcd4424 100644
--- a/src/Symfony/Component/Validator/Constraints/Type.php
+++ b/src/Symfony/Component/Validator/Constraints/Type.php
@@ -23,9 +23,9 @@ class Type extends Constraint
 {
     const INVALID_TYPE_ERROR = 'ba785a8c-82cb-4283-967c-3cf342181b40';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_TYPE_ERROR => 'INVALID_TYPE_ERROR',
-    );
+    ];
 
     public $message = 'This value should be of type {{ type }}.';
     public $type;
@@ -43,6 +43,6 @@ public function getDefaultOption()
      */
     public function getRequiredOptions()
     {
-        return array('type');
+        return ['type'];
     }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Url.php b/src/Symfony/Component/Validator/Constraints/Url.php
index 988dd19136da..1a8d18efb9db 100644
--- a/src/Symfony/Component/Validator/Constraints/Url.php
+++ b/src/Symfony/Component/Validator/Constraints/Url.php
@@ -37,12 +37,12 @@ class Url extends Constraint
 
     const INVALID_URL_ERROR = '57c2f299-1154-4870-89bb-ef3b1f5ad229';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_URL_ERROR => 'INVALID_URL_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid URL.';
     public $dnsMessage = 'The host could not be resolved.';
-    public $protocols = array('http', 'https');
+    public $protocols = ['http', 'https'];
     public $checkDNS = self::CHECK_DNS_TYPE_NONE;
 }
diff --git a/src/Symfony/Component/Validator/Constraints/UrlValidator.php b/src/Symfony/Component/Validator/Constraints/UrlValidator.php
index 3ccf4ba79b2b..bdaef756bcc5 100644
--- a/src/Symfony/Component/Validator/Constraints/UrlValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/UrlValidator.php
@@ -79,7 +79,7 @@ public function validate($value, Constraint $constraint)
                 @trigger_error(sprintf('Use of the boolean TRUE for the "checkDNS" option in %s is deprecated.  Use Url::CHECK_DNS_TYPE_ANY instead.', Url::class), E_USER_DEPRECATED);
             }
 
-            if (!\in_array($constraint->checkDNS, array(
+            if (!\in_array($constraint->checkDNS, [
                 Url::CHECK_DNS_TYPE_ANY,
                 Url::CHECK_DNS_TYPE_A,
                 Url::CHECK_DNS_TYPE_A6,
@@ -92,8 +92,8 @@ public function validate($value, Constraint $constraint)
                 Url::CHECK_DNS_TYPE_SOA,
                 Url::CHECK_DNS_TYPE_SRV,
                 Url::CHECK_DNS_TYPE_TXT,
-            ), true)) {
-                throw new InvalidOptionsException(sprintf('Invalid value for option "checkDNS" in constraint %s', \get_class($constraint)), array('checkDNS'));
+            ], true)) {
+                throw new InvalidOptionsException(sprintf('Invalid value for option "checkDNS" in constraint %s', \get_class($constraint)), ['checkDNS']);
             }
 
             $host = parse_url($value, PHP_URL_HOST);
diff --git a/src/Symfony/Component/Validator/Constraints/Uuid.php b/src/Symfony/Component/Validator/Constraints/Uuid.php
index 2deecbadd61c..988f3c3b2dfd 100644
--- a/src/Symfony/Component/Validator/Constraints/Uuid.php
+++ b/src/Symfony/Component/Validator/Constraints/Uuid.php
@@ -28,14 +28,14 @@ class Uuid extends Constraint
     const INVALID_VERSION_ERROR = '21ba13b4-b185-4882-ac6f-d147355987eb';
     const INVALID_VARIANT_ERROR = '164ef693-2b9d-46de-ad7f-836201f0c2db';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::INVALID_HYPHEN_PLACEMENT_ERROR => 'INVALID_HYPHEN_PLACEMENT_ERROR',
         self::INVALID_VERSION_ERROR => 'INVALID_VERSION_ERROR',
         self::INVALID_VARIANT_ERROR => 'INVALID_VARIANT_ERROR',
-    );
+    ];
 
     // Possible versions defined by RFC 4122
     const V1_MAC = 1;
@@ -67,11 +67,11 @@ class Uuid extends Constraint
      *
      * @var int[]
      */
-    public $versions = array(
+    public $versions = [
         self::V1_MAC,
         self::V2_DCE,
         self::V3_MD5,
         self::V4_RANDOM,
         self::V5_SHA1,
-    );
+    ];
 }
diff --git a/src/Symfony/Component/Validator/Constraints/ValidValidator.php b/src/Symfony/Component/Validator/Constraints/ValidValidator.php
index be5fbc12660b..cc10ec5204ef 100644
--- a/src/Symfony/Component/Validator/Constraints/ValidValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/ValidValidator.php
@@ -33,6 +33,6 @@ public function validate($value, Constraint $constraint)
         $this->context
             ->getValidator()
             ->inContext($this->context)
-            ->validate($value, null, array($this->context->getGroup()));
+            ->validate($value, null, [$this->context->getGroup()]);
     }
 }
diff --git a/src/Symfony/Component/Validator/Context/ExecutionContext.php b/src/Symfony/Component/Validator/Context/ExecutionContext.php
index 8118ac10ca7f..7ca9caa80fef 100644
--- a/src/Symfony/Component/Validator/Context/ExecutionContext.php
+++ b/src/Symfony/Component/Validator/Context/ExecutionContext.php
@@ -110,14 +110,14 @@ class ExecutionContext implements ExecutionContextInterface
      *
      * @var array
      */
-    private $validatedObjects = array();
+    private $validatedObjects = [];
 
     /**
      * Stores which class constraint has been validated for which object.
      *
      * @var array
      */
-    private $validatedConstraints = array();
+    private $validatedConstraints = [];
 
     /**
      * Stores which objects have been initialized.
@@ -179,7 +179,7 @@ public function setConstraint(Constraint $constraint)
     /**
      * {@inheritdoc}
      */
-    public function addViolation($message, array $parameters = array())
+    public function addViolation($message, array $parameters = [])
     {
         $this->violations->add(new ConstraintViolation(
             $this->translator->trans($message, $parameters, $this->translationDomain),
@@ -197,7 +197,7 @@ public function addViolation($message, array $parameters = array())
     /**
      * {@inheritdoc}
      */
-    public function buildViolation($message, array $parameters = array())
+    public function buildViolation($message, array $parameters = [])
     {
         return new ConstraintViolationBuilder(
             $this->violations,
@@ -303,7 +303,7 @@ public function getPropertyPath($subPath = '')
     public function markGroupAsValidated($cacheKey, $groupHash)
     {
         if (!isset($this->validatedObjects[$cacheKey])) {
-            $this->validatedObjects[$cacheKey] = array();
+            $this->validatedObjects[$cacheKey] = [];
         }
 
         $this->validatedObjects[$cacheKey][$groupHash] = true;
diff --git a/src/Symfony/Component/Validator/Context/ExecutionContextInterface.php b/src/Symfony/Component/Validator/Context/ExecutionContextInterface.php
index e4f7df1757da..cac98495bcf5 100644
--- a/src/Symfony/Component/Validator/Context/ExecutionContextInterface.php
+++ b/src/Symfony/Component/Validator/Context/ExecutionContextInterface.php
@@ -67,7 +67,7 @@ interface ExecutionContextInterface
      * @param string $message The error message
      * @param array  $params  The parameters substituted in the error message
      */
-    public function addViolation($message, array $params = array());
+    public function addViolation($message, array $params = []);
 
     /**
      * Returns a builder for adding a violation with extended information.
@@ -86,7 +86,7 @@ public function addViolation($message, array $params = array());
      *
      * @return ConstraintViolationBuilderInterface The violation builder
      */
-    public function buildViolation($message, array $parameters = array());
+    public function buildViolation($message, array $parameters = []);
 
     /**
      * Returns the validator.
diff --git a/src/Symfony/Component/Validator/DataCollector/ValidatorDataCollector.php b/src/Symfony/Component/Validator/DataCollector/ValidatorDataCollector.php
index f7165e5fbdae..999a9968b07f 100644
--- a/src/Symfony/Component/Validator/DataCollector/ValidatorDataCollector.php
+++ b/src/Symfony/Component/Validator/DataCollector/ValidatorDataCollector.php
@@ -45,10 +45,10 @@ public function collect(Request $request, Response $response, \Exception $except
 
     public function reset()
     {
-        $this->data = array(
-            'calls' => $this->cloneVar(array()),
+        $this->data = [
+            'calls' => $this->cloneVar([]),
             'violations_count' => 0,
-        );
+        ];
     }
 
     /**
@@ -89,9 +89,9 @@ public function getName()
 
     protected function getCasters()
     {
-        return parent::getCasters() + array(
+        return parent::getCasters() + [
             \Exception::class => function (\Exception $e, array $a, Stub $s) {
-                foreach (array("\0Exception\0previous", "\0Exception\0trace") as $k) {
+                foreach (["\0Exception\0previous", "\0Exception\0trace"] as $k) {
                     if (isset($a[$k])) {
                         unset($a[$k]);
                         ++$s->cut;
@@ -101,12 +101,12 @@ protected function getCasters()
                 return $a;
             },
             FormInterface::class => function (FormInterface $f, array $a) {
-                return array(
+                return [
                     Caster::PREFIX_VIRTUAL.'name' => $f->getName(),
                     Caster::PREFIX_VIRTUAL.'type_class' => new ClassStub(\get_class($f->getConfig()->getType()->getInnerType())),
                     Caster::PREFIX_VIRTUAL.'data' => $f->getData(),
-                );
+                ];
             },
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/DependencyInjection/AddConstraintValidatorsPass.php b/src/Symfony/Component/Validator/DependencyInjection/AddConstraintValidatorsPass.php
index d651188985f3..909842341387 100644
--- a/src/Symfony/Component/Validator/DependencyInjection/AddConstraintValidatorsPass.php
+++ b/src/Symfony/Component/Validator/DependencyInjection/AddConstraintValidatorsPass.php
@@ -37,7 +37,7 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $validators = array();
+        $validators = [];
         foreach ($container->findTaggedServiceIds($this->constraintValidatorTag, true) as $id => $attributes) {
             $definition = $container->getDefinition($id);
 
diff --git a/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php b/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
index 330f578f033f..bbce7c977fda 100644
--- a/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
+++ b/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
@@ -36,11 +36,11 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $initializers = array();
+        $initializers = [];
         foreach ($container->findTaggedServiceIds($this->initializerTag, true) as $id => $attributes) {
             $initializers[] = new Reference($id);
         }
 
-        $container->getDefinition($this->builderService)->addMethodCall('addObjectInitializers', array($initializers));
+        $container->getDefinition($this->builderService)->addMethodCall('addObjectInitializers', [$initializers]);
     }
 }
diff --git a/src/Symfony/Component/Validator/Mapping/ClassMetadata.php b/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
index c4e5b11b87cb..210d55ea42ce 100644
--- a/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
+++ b/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
@@ -53,7 +53,7 @@ class ClassMetadata extends GenericMetadata implements ClassMetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getPropertyMetadata()} instead.
      */
-    public $members = array();
+    public $members = [];
 
     /**
      * @var PropertyMetadata[]
@@ -62,7 +62,7 @@ class ClassMetadata extends GenericMetadata implements ClassMetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getPropertyMetadata()} instead.
      */
-    public $properties = array();
+    public $properties = [];
 
     /**
      * @var GetterMetadata[]
@@ -71,7 +71,7 @@ class ClassMetadata extends GenericMetadata implements ClassMetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getPropertyMetadata()} instead.
      */
-    public $getters = array();
+    public $getters = [];
 
     /**
      * @var array
@@ -80,7 +80,7 @@ class ClassMetadata extends GenericMetadata implements ClassMetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getGroupSequence()} instead.
      */
-    public $groupSequence = array();
+    public $groupSequence = [];
 
     /**
      * @var bool
@@ -135,7 +135,7 @@ public function __sleep()
         // Don't store the cascading strategy. Classes never cascade.
         unset($parentProperties[array_search('cascadingStrategy', $parentProperties)]);
 
-        return array_merge($parentProperties, array(
+        return array_merge($parentProperties, [
             'getters',
             'groupSequence',
             'groupSequenceProvider',
@@ -143,7 +143,7 @@ public function __sleep()
             'name',
             'properties',
             'defaultGroup',
-        ));
+        ]);
     }
 
     /**
@@ -380,7 +380,7 @@ public function hasPropertyMetadata($property)
     public function getPropertyMetadata($property)
     {
         if (!isset($this->members[$property])) {
-            return array();
+            return [];
         }
 
         return $this->members[$property];
diff --git a/src/Symfony/Component/Validator/Mapping/Factory/LazyLoadingMetadataFactory.php b/src/Symfony/Component/Validator/Mapping/Factory/LazyLoadingMetadataFactory.php
index 9d5da256f5dd..cf0d08acce7f 100644
--- a/src/Symfony/Component/Validator/Mapping/Factory/LazyLoadingMetadataFactory.php
+++ b/src/Symfony/Component/Validator/Mapping/Factory/LazyLoadingMetadataFactory.php
@@ -46,7 +46,7 @@ class LazyLoadingMetadataFactory implements MetadataFactoryInterface
      *
      * @var ClassMetadata[]
      */
-    protected $loadedClasses = array();
+    protected $loadedClasses = [];
 
     /**
      * Creates a new metadata factory.
diff --git a/src/Symfony/Component/Validator/Mapping/GenericMetadata.php b/src/Symfony/Component/Validator/Mapping/GenericMetadata.php
index a5364f9b0872..139d252fc06b 100644
--- a/src/Symfony/Component/Validator/Mapping/GenericMetadata.php
+++ b/src/Symfony/Component/Validator/Mapping/GenericMetadata.php
@@ -32,7 +32,7 @@ class GenericMetadata implements MetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getConstraints()} and {@link findConstraints()} instead.
      */
-    public $constraints = array();
+    public $constraints = [];
 
     /**
      * @var array
@@ -41,7 +41,7 @@ class GenericMetadata implements MetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link findConstraints()} instead.
      */
-    public $constraintsByGroup = array();
+    public $constraintsByGroup = [];
 
     /**
      * The strategy for cascading objects.
@@ -80,12 +80,12 @@ class GenericMetadata implements MetadataInterface
      */
     public function __sleep()
     {
-        return array(
+        return [
             'constraints',
             'constraintsByGroup',
             'cascadingStrategy',
             'traversalStrategy',
-        );
+        ];
     }
 
     /**
@@ -95,8 +95,8 @@ public function __clone()
     {
         $constraints = $this->constraints;
 
-        $this->constraints = array();
-        $this->constraintsByGroup = array();
+        $this->constraints = [];
+        $this->constraintsByGroup = [];
 
         foreach ($constraints as $constraint) {
             $this->addConstraint(clone $constraint);
@@ -189,7 +189,7 @@ public function findConstraints($group)
     {
         return isset($this->constraintsByGroup[$group])
             ? $this->constraintsByGroup[$group]
-            : array();
+            : [];
     }
 
     /**
diff --git a/src/Symfony/Component/Validator/Mapping/Loader/AbstractLoader.php b/src/Symfony/Component/Validator/Mapping/Loader/AbstractLoader.php
index 9d92de348ae5..ae2e1e04cde2 100644
--- a/src/Symfony/Component/Validator/Mapping/Loader/AbstractLoader.php
+++ b/src/Symfony/Component/Validator/Mapping/Loader/AbstractLoader.php
@@ -32,7 +32,7 @@ abstract class AbstractLoader implements LoaderInterface
      */
     const DEFAULT_NAMESPACE = '\\Symfony\\Component\\Validator\\Constraints\\';
 
-    protected $namespaces = array();
+    protected $namespaces = [];
 
     /**
      * Adds a namespace alias.
diff --git a/src/Symfony/Component/Validator/Mapping/Loader/FilesLoader.php b/src/Symfony/Component/Validator/Mapping/Loader/FilesLoader.php
index 571c7e7abb24..0882c3932f01 100644
--- a/src/Symfony/Component/Validator/Mapping/Loader/FilesLoader.php
+++ b/src/Symfony/Component/Validator/Mapping/Loader/FilesLoader.php
@@ -41,7 +41,7 @@ public function __construct(array $paths)
      */
     protected function getFileLoaders($paths)
     {
-        $loaders = array();
+        $loaders = [];
 
         foreach ($paths as $path) {
             $loaders[] = $this->getFileLoaderInstance($path);
diff --git a/src/Symfony/Component/Validator/Mapping/Loader/XmlFileLoader.php b/src/Symfony/Component/Validator/Mapping/Loader/XmlFileLoader.php
index 398d81e93663..cec3ea6c2d56 100644
--- a/src/Symfony/Component/Validator/Mapping/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/Validator/Mapping/Loader/XmlFileLoader.php
@@ -72,7 +72,7 @@ public function getMappedClasses()
      */
     protected function parseConstraints(\SimpleXMLElement $nodes)
     {
-        $constraints = array();
+        $constraints = [];
 
         foreach ($nodes as $node) {
             if (\count($node) > 0) {
@@ -83,7 +83,7 @@ protected function parseConstraints(\SimpleXMLElement $nodes)
                 } elseif (\count($node->option) > 0) {
                     $options = $this->parseOptions($node->option);
                 } else {
-                    $options = array();
+                    $options = [];
                 }
             } elseif (\strlen((string) $node) > 0) {
                 $options = XmlUtils::phpize(trim($node));
@@ -106,7 +106,7 @@ protected function parseConstraints(\SimpleXMLElement $nodes)
      */
     protected function parseValues(\SimpleXMLElement $nodes)
     {
-        $values = array();
+        $values = [];
 
         foreach ($nodes as $node) {
             if (\count($node) > 0) {
@@ -115,7 +115,7 @@ protected function parseValues(\SimpleXMLElement $nodes)
                 } elseif (\count($node->constraint) > 0) {
                     $value = $this->parseConstraints($node->constraint);
                 } else {
-                    $value = array();
+                    $value = [];
                 }
             } else {
                 $value = trim($node);
@@ -140,7 +140,7 @@ protected function parseValues(\SimpleXMLElement $nodes)
      */
     protected function parseOptions(\SimpleXMLElement $nodes)
     {
-        $options = array();
+        $options = [];
 
         foreach ($nodes as $node) {
             if (\count($node) > 0) {
@@ -149,7 +149,7 @@ protected function parseOptions(\SimpleXMLElement $nodes)
                 } elseif (\count($node->constraint) > 0) {
                     $value = $this->parseConstraints($node->constraint);
                 } else {
-                    $value = array();
+                    $value = [];
                 }
             } else {
                 $value = XmlUtils::phpize($node);
@@ -190,7 +190,7 @@ private function loadClassesFromXml()
         // state before it completes
         $xml = $this->parseFile($this->file);
 
-        $this->classes = array();
+        $this->classes = [];
 
         foreach ($xml->namespace as $namespace) {
             $this->addNamespaceAlias((string) $namespace['prefix'], trim((string) $namespace));
diff --git a/src/Symfony/Component/Validator/Mapping/Loader/YamlFileLoader.php b/src/Symfony/Component/Validator/Mapping/Loader/YamlFileLoader.php
index c1395bb2fcca..0f6166674d01 100644
--- a/src/Symfony/Component/Validator/Mapping/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/Validator/Mapping/Loader/YamlFileLoader.php
@@ -80,7 +80,7 @@ public function getMappedClasses()
      */
     protected function parseNodes(array $nodes)
     {
-        $values = array();
+        $values = [];
 
         foreach ($nodes as $name => $childNodes) {
             if (is_numeric($name) && \is_array($childNodes) && 1 === \count($childNodes)) {
@@ -131,7 +131,7 @@ private function parseFile($path)
 
         // empty file
         if (null === $classes) {
-            return array();
+            return [];
         }
 
         // not an array
diff --git a/src/Symfony/Component/Validator/Mapping/MemberMetadata.php b/src/Symfony/Component/Validator/Mapping/MemberMetadata.php
index 74a524b194c5..11bd54d33c95 100644
--- a/src/Symfony/Component/Validator/Mapping/MemberMetadata.php
+++ b/src/Symfony/Component/Validator/Mapping/MemberMetadata.php
@@ -52,7 +52,7 @@ abstract class MemberMetadata extends GenericMetadata implements PropertyMetadat
     /**
      * @var \ReflectionMethod[]|\ReflectionProperty[]
      */
-    private $reflMember = array();
+    private $reflMember = [];
 
     /**
      * @param string $class    The name of the class this member is defined on
@@ -85,11 +85,11 @@ public function addConstraint(Constraint $constraint)
      */
     public function __sleep()
     {
-        return array_merge(parent::__sleep(), array(
+        return array_merge(parent::__sleep(), [
             'class',
             'name',
             'property',
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Validator/Test/ConstraintValidatorTestCase.php b/src/Symfony/Component/Validator/Test/ConstraintValidatorTestCase.php
index 087a90a1850d..afe1f1a582e1 100644
--- a/src/Symfony/Component/Validator/Test/ConstraintValidatorTestCase.php
+++ b/src/Symfony/Component/Validator/Test/ConstraintValidatorTestCase.php
@@ -175,7 +175,7 @@ protected function expectValidateAt($i, $propertyPath, $value, $group)
             ->will($this->returnValue($validator));
         $validator->expects($this->at(2 * $i + 1))
             ->method('validate')
-            ->with($value, $this->logicalOr(null, array(), $this->isInstanceOf('\Symfony\Component\Validator\Constraints\Valid')), $group);
+            ->with($value, $this->logicalOr(null, [], $this->isInstanceOf('\Symfony\Component\Validator\Constraints\Valid')), $group);
     }
 
     protected function expectValidateValueAt($i, $propertyPath, $value, $constraints, $group = null)
@@ -224,7 +224,7 @@ class ConstraintViolationAssertion
     private $assertions;
 
     private $message;
-    private $parameters = array();
+    private $parameters = [];
     private $invalidValue = 'InvalidValue';
     private $propertyPath = 'property.path';
     private $plural;
@@ -232,7 +232,7 @@ class ConstraintViolationAssertion
     private $constraint;
     private $cause;
 
-    public function __construct(ExecutionContextInterface $context, $message, Constraint $constraint = null, array $assertions = array())
+    public function __construct(ExecutionContextInterface $context, $message, Constraint $constraint = null, array $assertions = [])
     {
         $this->context = $context;
         $this->message = $message;
@@ -306,7 +306,7 @@ public function buildNextViolation($message)
 
     public function assertRaised()
     {
-        $expected = array();
+        $expected = [];
         foreach ($this->assertions as $assertion) {
             $expected[] = $assertion->getViolation();
         }
diff --git a/src/Symfony/Component/Validator/Tests/ConstraintTest.php b/src/Symfony/Component/Validator/Tests/ConstraintTest.php
index a05741490fdd..87bac5b0a6e9 100644
--- a/src/Symfony/Component/Validator/Tests/ConstraintTest.php
+++ b/src/Symfony/Component/Validator/Tests/ConstraintTest.php
@@ -24,10 +24,10 @@ class ConstraintTest extends TestCase
 {
     public function testSetProperties()
     {
-        $constraint = new ConstraintA(array(
+        $constraint = new ConstraintA([
             'property1' => 'foo',
             'property2' => 'bar',
-        ));
+        ]);
 
         $this->assertEquals('foo', $constraint->property1);
         $this->assertEquals('bar', $constraint->property2);
@@ -37,9 +37,9 @@ public function testSetNotExistingPropertyThrowsException()
     {
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('Symfony\Component\Validator\Exception\InvalidOptionsException');
 
-        new ConstraintA(array(
+        new ConstraintA([
             'foo' => 'bar',
-        ));
+        ]);
     }
 
     public function testMagicPropertiesAreNotAllowed()
@@ -55,10 +55,10 @@ public function testInvalidAndRequiredOptionsPassed()
     {
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('Symfony\Component\Validator\Exception\InvalidOptionsException');
 
-        new ConstraintC(array(
+        new ConstraintC([
             'option1' => 'default',
             'foo' => 'bar',
-        ));
+        ]);
     }
 
     public function testSetDefaultProperty()
@@ -70,14 +70,14 @@ public function testSetDefaultProperty()
 
     public function testSetDefaultPropertyDoctrineStyle()
     {
-        $constraint = new ConstraintA(array('value' => 'foo'));
+        $constraint = new ConstraintA(['value' => 'foo']);
 
         $this->assertEquals('foo', $constraint->property2);
     }
 
     public function testSetDefaultPropertyDoctrineStylePlusOtherProperty()
     {
-        $constraint = new ConstraintA(array('value' => 'foo', 'property1' => 'bar'));
+        $constraint = new ConstraintA(['value' => 'foo', 'property1' => 'bar']);
 
         $this->assertEquals('foo', $constraint->property2);
         $this->assertEquals('bar', $constraint->property1);
@@ -85,7 +85,7 @@ public function testSetDefaultPropertyDoctrineStylePlusOtherProperty()
 
     public function testSetDefaultPropertyDoctrineStyleWhenDefaultPropertyIsNamedValue()
     {
-        $constraint = new ConstraintWithValueAsDefault(array('value' => 'foo'));
+        $constraint = new ConstraintWithValueAsDefault(['value' => 'foo']);
 
         $this->assertEquals('foo', $constraint->value);
         $this->assertNull($constraint->property);
@@ -93,7 +93,7 @@ public function testSetDefaultPropertyDoctrineStyleWhenDefaultPropertyIsNamedVal
 
     public function testDontSetDefaultPropertyIfValuePropertyExists()
     {
-        $constraint = new ConstraintWithValue(array('value' => 'foo'));
+        $constraint = new ConstraintWithValue(['value' => 'foo']);
 
         $this->assertEquals('foo', $constraint->value);
         $this->assertNull($constraint->property);
@@ -115,23 +115,23 @@ public function testRequiredOptionsMustBeDefined()
 
     public function testRequiredOptionsPassed()
     {
-        $constraint = new ConstraintC(array('option1' => 'default'));
+        $constraint = new ConstraintC(['option1' => 'default']);
 
         $this->assertSame('default', $constraint->option1);
     }
 
     public function testGroupsAreConvertedToArray()
     {
-        $constraint = new ConstraintA(array('groups' => 'Foo'));
+        $constraint = new ConstraintA(['groups' => 'Foo']);
 
-        $this->assertEquals(array('Foo'), $constraint->groups);
+        $this->assertEquals(['Foo'], $constraint->groups);
     }
 
     public function testAddDefaultGroupAddsGroup()
     {
-        $constraint = new ConstraintA(array('groups' => 'Default'));
+        $constraint = new ConstraintA(['groups' => 'Default']);
         $constraint->addImplicitGroupName('Foo');
-        $this->assertEquals(array('Default', 'Foo'), $constraint->groups);
+        $this->assertEquals(['Default', 'Foo'], $constraint->groups);
     }
 
     public function testAllowsSettingZeroRequiredPropertyValue()
@@ -142,9 +142,9 @@ public function testAllowsSettingZeroRequiredPropertyValue()
 
     public function testCanCreateConstraintWithNoDefaultOptionAndEmptyArray()
     {
-        $constraint = new ConstraintB(array());
+        $constraint = new ConstraintB([]);
 
-        $this->assertSame(array(Constraint::PROPERTY_CONSTRAINT, Constraint::CLASS_CONSTRAINT), $constraint->getTargets());
+        $this->assertSame([Constraint::PROPERTY_CONSTRAINT, Constraint::CLASS_CONSTRAINT], $constraint->getTargets());
     }
 
     public function testGetTargetsCanBeString()
@@ -158,15 +158,15 @@ public function testGetTargetsCanBeArray()
     {
         $constraint = new ConstraintA();
 
-        $this->assertEquals(array('property', 'class'), $constraint->getTargets());
+        $this->assertEquals(['property', 'class'], $constraint->getTargets());
     }
 
     public function testSerialize()
     {
-        $constraint = new ConstraintA(array(
+        $constraint = new ConstraintA([
             'property1' => 'foo',
             'property2' => 'bar',
-        ));
+        ]);
 
         $restoredConstraint = unserialize(serialize($constraint));
 
@@ -175,33 +175,33 @@ public function testSerialize()
 
     public function testSerializeInitializesGroupsOptionToDefault()
     {
-        $constraint = new ConstraintA(array(
+        $constraint = new ConstraintA([
             'property1' => 'foo',
             'property2' => 'bar',
-        ));
+        ]);
 
         $constraint = unserialize(serialize($constraint));
 
-        $expected = new ConstraintA(array(
+        $expected = new ConstraintA([
             'property1' => 'foo',
             'property2' => 'bar',
             'groups' => 'Default',
-        ));
+        ]);
 
         $this->assertEquals($expected, $constraint);
     }
 
     public function testSerializeKeepsCustomGroups()
     {
-        $constraint = new ConstraintA(array(
+        $constraint = new ConstraintA([
             'property1' => 'foo',
             'property2' => 'bar',
             'groups' => 'MyGroup',
-        ));
+        ]);
 
         $constraint = unserialize(serialize($constraint));
 
-        $this->assertSame(array('MyGroup'), $constraint->groups);
+        $this->assertSame(['MyGroup'], $constraint->groups);
     }
 
     /**
@@ -214,11 +214,11 @@ public function testGetErrorNameForUnknownCode()
 
     public function testOptionsAsDefaultOption()
     {
-        $constraint = new ConstraintA($options = array('value1'));
+        $constraint = new ConstraintA($options = ['value1']);
 
         $this->assertEquals($options, $constraint->property2);
 
-        $constraint = new ConstraintA($options = array('value1', 'property1' => 'value2'));
+        $constraint = new ConstraintA($options = ['value1', 'property1' => 'value2']);
 
         $this->assertEquals($options, $constraint->property2);
     }
@@ -229,12 +229,12 @@ public function testOptionsAsDefaultOption()
      */
     public function testInvalidOptions()
     {
-        new ConstraintA(array('property2' => 'foo', 'bar', 5 => 'baz'));
+        new ConstraintA(['property2' => 'foo', 'bar', 5 => 'baz']);
     }
 
     public function testOptionsWithInvalidInternalPointer()
     {
-        $options = array('property1' => 'foo');
+        $options = ['property1' => 'foo'];
         next($options);
         next($options);
 
diff --git a/src/Symfony/Component/Validator/Tests/ConstraintViolationListTest.php b/src/Symfony/Component/Validator/Tests/ConstraintViolationListTest.php
index f0e6afe20da3..73d81cbfad9c 100644
--- a/src/Symfony/Component/Validator/Tests/ConstraintViolationListTest.php
+++ b/src/Symfony/Component/Validator/Tests/ConstraintViolationListTest.php
@@ -37,7 +37,7 @@ public function testInit()
     public function testInitWithViolations()
     {
         $violation = $this->getViolation('Error');
-        $this->list = new ConstraintViolationList(array($violation));
+        $this->list = new ConstraintViolationList([$violation]);
 
         $this->assertCount(1, $this->list);
         $this->assertSame($violation, $this->list[0]);
@@ -54,11 +54,11 @@ public function testAdd()
 
     public function testAddAll()
     {
-        $violations = array(
+        $violations = [
             10 => $this->getViolation('Error 1'),
             20 => $this->getViolation('Error 2'),
             30 => $this->getViolation('Error 3'),
-        );
+        ];
         $otherList = new ConstraintViolationList($violations);
         $this->list->addAll($otherList);
 
@@ -71,11 +71,11 @@ public function testAddAll()
 
     public function testIterator()
     {
-        $violations = array(
+        $violations = [
             10 => $this->getViolation('Error 1'),
             20 => $this->getViolation('Error 2'),
             30 => $this->getViolation('Error 3'),
-        );
+        ];
 
         $this->list = new ConstraintViolationList($violations);
 
@@ -103,13 +103,13 @@ public function testArrayAccess()
 
     public function testToString()
     {
-        $this->list = new ConstraintViolationList(array(
+        $this->list = new ConstraintViolationList([
             $this->getViolation('Error 1', 'Root'),
             $this->getViolation('Error 2', 'Root', 'foo.bar'),
             $this->getViolation('Error 3', 'Root', '[baz]'),
             $this->getViolation('Error 4', '', 'foo.bar'),
             $this->getViolation('Error 5', '', '[baz]'),
-        ));
+        ]);
 
         $expected = <<<'EOF'
 Root:
@@ -133,11 +133,11 @@ public function testToString()
      */
     public function testFindByCodes($code, $violationsCount)
     {
-        $violations = array(
+        $violations = [
             $this->getViolation('Error', null, null, 'code1'),
             $this->getViolation('Error', null, null, 'code1'),
             $this->getViolation('Error', null, null, 'code2'),
-        );
+        ];
         $list = new ConstraintViolationList($violations);
 
         $specificErrors = $list->findByCodes($code);
@@ -148,15 +148,15 @@ public function testFindByCodes($code, $violationsCount)
 
     public function findByCodesProvider()
     {
-        return array(
-            array('code1', 2),
-            array(array('code1', 'code2'), 3),
-            array('code3', 0),
-        );
+        return [
+            ['code1', 2],
+            [['code1', 'code2'], 3],
+            ['code3', 0],
+        ];
     }
 
     protected function getViolation($message, $root = null, $propertyPath = null, $code = null)
     {
-        return new ConstraintViolation($message, $message, array(), $root, $propertyPath, null, null, $code);
+        return new ConstraintViolation($message, $message, [], $root, $propertyPath, null, null, $code);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/ConstraintViolationTest.php b/src/Symfony/Component/Validator/Tests/ConstraintViolationTest.php
index edaa7fa50d6b..b43e51f27336 100644
--- a/src/Symfony/Component/Validator/Tests/ConstraintViolationTest.php
+++ b/src/Symfony/Component/Validator/Tests/ConstraintViolationTest.php
@@ -21,7 +21,7 @@ public function testToStringHandlesArrays()
         $violation = new ConstraintViolation(
             'Array',
             '{{ value }}',
-            array('{{ value }}' => array(1, 2, 3)),
+            ['{{ value }}' => [1, 2, 3]],
             'Root',
             'property.path',
             null
@@ -40,8 +40,8 @@ public function testToStringHandlesArrayRoots()
         $violation = new ConstraintViolation(
             '42 cannot be used here',
             'this is the message template',
-            array(),
-            array('some_value' => 42),
+            [],
+            ['some_value' => 42],
             'some_value',
             null
         );
@@ -59,8 +59,8 @@ public function testToStringHandlesCodes()
         $violation = new ConstraintViolation(
             '42 cannot be used here',
             'this is the message template',
-            array(),
-            array('some_value' => 42),
+            [],
+            ['some_value' => 42],
             'some_value',
             null,
             null,
@@ -85,8 +85,8 @@ public function testToStringOmitsEmptyCodes()
         $violation = new ConstraintViolation(
             '42 cannot be used here',
             'this is the message template',
-            array(),
-            array('some_value' => 42),
+            [],
+            ['some_value' => 42],
             'some_value',
             null,
             null,
@@ -98,8 +98,8 @@ public function testToStringOmitsEmptyCodes()
         $violation = new ConstraintViolation(
             '42 cannot be used here',
             'this is the message template',
-            array(),
-            array('some_value' => 42),
+            [],
+            ['some_value' => 42],
             'some_value',
             null,
             null,
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php b/src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php
index 5e9f2bceafcd..2f27974a801a 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php
@@ -73,10 +73,10 @@ protected static function addPhp5Dot5Comparisons(array $comparisons)
 
     public function provideInvalidConstraintOptions()
     {
-        return array(
-            array(null),
-            array(array()),
-        );
+        return [
+            [null],
+            [[]],
+        ];
     }
 
     /**
@@ -95,10 +95,10 @@ public function testThrowsConstraintExceptionIfNoValueOrPropertyPath($options)
      */
     public function testThrowsConstraintExceptionIfBothValueAndPropertyPath()
     {
-        $this->createConstraint((array(
+        $this->createConstraint(([
             'value' => 'value',
             'propertyPath' => 'propertyPath',
-        )));
+        ]));
     }
 
     /**
@@ -109,7 +109,7 @@ public function testThrowsConstraintExceptionIfBothValueAndPropertyPath()
      */
     public function testValidComparisonToValue($dirtyValue, $comparisonValue)
     {
-        $constraint = $this->createConstraint(array('value' => $comparisonValue));
+        $constraint = $this->createConstraint(['value' => $comparisonValue]);
 
         $this->validator->validate($dirtyValue, $constraint);
 
@@ -137,7 +137,7 @@ public function provideAllValidComparisons()
      */
     public function testValidComparisonToPropertyPath($comparedValue)
     {
-        $constraint = $this->createConstraint(array('propertyPath' => 'value'));
+        $constraint = $this->createConstraint(['propertyPath' => 'value']);
 
         $object = new ComparisonTest_Class(5);
 
@@ -153,9 +153,9 @@ public function testValidComparisonToPropertyPath($comparedValue)
      */
     public function testValidComparisonToPropertyPathOnArray($comparedValue)
     {
-        $constraint = $this->createConstraint(array('propertyPath' => '[root][value]'));
+        $constraint = $this->createConstraint(['propertyPath' => '[root][value]']);
 
-        $this->setObject(array('root' => array('value' => 5)));
+        $this->setObject(['root' => ['value' => 5]]);
 
         $this->validator->validate($comparedValue, $constraint);
 
@@ -164,7 +164,7 @@ public function testValidComparisonToPropertyPathOnArray($comparedValue)
 
     public function testNoViolationOnNullObjectWithPropertyPath()
     {
-        $constraint = $this->createConstraint(array('propertyPath' => 'propertyPath'));
+        $constraint = $this->createConstraint(['propertyPath' => 'propertyPath']);
 
         $this->setObject(null);
 
@@ -175,7 +175,7 @@ public function testNoViolationOnNullObjectWithPropertyPath()
 
     public function testInvalidValuePath()
     {
-        $constraint = $this->createConstraint(array('propertyPath' => 'foo'));
+        $constraint = $this->createConstraint(['propertyPath' => 'foo']);
 
         if (method_exists($this, 'expectException')) {
             $this->expectException(ConstraintDefinitionException::class);
@@ -218,7 +218,7 @@ public function testInvalidComparisonToValue($dirtyValue, $dirtyValueAsString, $
             IntlTestHelper::requireIntl($this, '57.1');
         }
 
-        $constraint = $this->createConstraint(array('value' => $comparedValue));
+        $constraint = $this->createConstraint(['value' => $comparedValue]);
         $constraint->message = 'Constraint Message';
 
         $this->validator->validate($dirtyValue, $constraint);
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/AllTest.php b/src/Symfony/Component/Validator/Tests/Constraints/AllTest.php
index 25e71a1b44dc..cdd72a22ebc5 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/AllTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/AllTest.php
@@ -25,9 +25,9 @@ class AllTest extends TestCase
      */
     public function testRejectNonConstraints()
     {
-        new All(array(
+        new All([
             'foo',
-        ));
+        ]);
     }
 
     /**
@@ -35,8 +35,8 @@ public function testRejectNonConstraints()
      */
     public function testRejectValidConstraint()
     {
-        new All(array(
+        new All([
             new Valid(),
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/AllValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/AllValidatorTest.php
index 2792dc4014a7..1752f47e700a 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/AllValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/AllValidatorTest.php
@@ -26,7 +26,7 @@ protected function createValidator()
 
     public function testNullIsValid()
     {
-        $this->validator->validate(null, new All(new Range(array('min' => 4))));
+        $this->validator->validate(null, new All(new Range(['min' => 4])));
 
         $this->assertNoViolation();
     }
@@ -36,7 +36,7 @@ public function testNullIsValid()
      */
     public function testThrowsExceptionIfNotTraversable()
     {
-        $this->validator->validate('foo.barbar', new All(new Range(array('min' => 4))));
+        $this->validator->validate('foo.barbar', new All(new Range(['min' => 4])));
     }
 
     /**
@@ -44,12 +44,12 @@ public function testThrowsExceptionIfNotTraversable()
      */
     public function testWalkSingleConstraint($array)
     {
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
         $i = 0;
 
         foreach ($array as $key => $value) {
-            $this->expectValidateValueAt($i++, '['.$key.']', $value, array($constraint));
+            $this->expectValidateValueAt($i++, '['.$key.']', $value, [$constraint]);
         }
 
         $this->validator->validate($array, new All($constraint));
@@ -62,15 +62,15 @@ public function testWalkSingleConstraint($array)
      */
     public function testWalkMultipleConstraints($array)
     {
-        $constraint1 = new Range(array('min' => 4));
+        $constraint1 = new Range(['min' => 4]);
         $constraint2 = new NotNull();
 
-        $constraints = array($constraint1, $constraint2);
+        $constraints = [$constraint1, $constraint2];
 
         $i = 0;
 
         foreach ($array as $key => $value) {
-            $this->expectValidateValueAt($i++, '['.$key.']', $valu
10000
e, array($constraint1, $constraint2));
+            $this->expectValidateValueAt($i++, '['.$key.']', $value, [$constraint1, $constraint2]);
         }
 
         $this->validator->validate($array, new All($constraints));
@@ -80,9 +80,9 @@ public function testWalkMultipleConstraints($array)
 
     public function getValidArguments()
     {
-        return array(
-            array(array(5, 6, 7)),
-            array(new \ArrayObject(array(5, 6, 7))),
-        );
+        return [
+            [[5, 6, 7]],
+            [new \ArrayObject([5, 6, 7])],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/BicValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/BicValidatorTest.php
index 5d21b93ced70..6f3d1c2b67af 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/BicValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/BicValidatorTest.php
@@ -49,14 +49,14 @@ public function testValidBics($bic)
     public function getValidBics()
     {
         // http://formvalidation.io/validators/bic/
-        return array(
-            array('ASPKAT2LXXX'),
-            array('ASPKAT2L'),
-            array('DSBACNBXSHA'),
-            array('UNCRIT2B912'),
-            array('DABADKKK'),
-            array('RZOOAT2L303'),
-        );
+        return [
+            ['ASPKAT2LXXX'],
+            ['ASPKAT2L'],
+            ['DSBACNBXSHA'],
+            ['UNCRIT2B912'],
+            ['DABADKKK'],
+            ['RZOOAT2L303'],
+        ];
     }
 
     /**
@@ -64,9 +64,9 @@ public function getValidBics()
      */
     public function testInvalidBics($bic, $code)
     {
-        $constraint = new Bic(array(
+        $constraint = new Bic([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($bic, $constraint);
 
@@ -78,30 +78,30 @@ public function testInvalidBics($bic, $code)
 
     public function getInvalidBics()
     {
-        return array(
-            array('DEUTD', Bic::INVALID_LENGTH_ERROR),
-            array('ASPKAT2LXX', Bic::INVALID_LENGTH_ERROR),
-            array('ASPKAT2LX', Bic::INVALID_LENGTH_ERROR),
-            array('ASPKAT2LXXX1', Bic::INVALID_LENGTH_ERROR),
-            array('DABADKK', Bic::INVALID_LENGTH_ERROR),
-            array('1SBACNBXSHA', Bic::INVALID_BANK_CODE_ERROR),
-            array('RZ00AT2L303', Bic::INVALID_BANK_CODE_ERROR),
-            array('D2BACNBXSHA', Bic::INVALID_BANK_CODE_ERROR),
-            array('DS3ACNBXSHA', Bic::INVALID_BANK_CODE_ERROR),
-            array('DSB4CNBXSHA', Bic::INVALID_BANK_CODE_ERROR),
-            array('DEUT12HH', Bic::INVALID_COUNTRY_CODE_ERROR),
-            array('DSBAC6BXSHA', Bic::INVALID_COUNTRY_CODE_ERROR),
-            array('DSBA5NBXSHA', Bic::INVALID_COUNTRY_CODE_ERROR),
+        return [
+            ['DEUTD', Bic::INVALID_LENGTH_ERROR],
+            ['ASPKAT2LXX', Bic::INVALID_LENGTH_ERROR],
+            ['ASPKAT2LX', Bic::INVALID_LENGTH_ERROR],
+            ['ASPKAT2LXXX1', Bic::INVALID_LENGTH_ERROR],
+            ['DABADKK', Bic::INVALID_LENGTH_ERROR],
+            ['1SBACNBXSHA', Bic::INVALID_BANK_CODE_ERROR],
+            ['RZ00AT2L303', Bic::INVALID_BANK_CODE_ERROR],
+            ['D2BACNBXSHA', Bic::INVALID_BANK_CODE_ERROR],
+            ['DS3ACNBXSHA', Bic::INVALID_BANK_CODE_ERROR],
+            ['DSB4CNBXSHA', Bic::INVALID_BANK_CODE_ERROR],
+            ['DEUT12HH', Bic::INVALID_COUNTRY_CODE_ERROR],
+            ['DSBAC6BXSHA', Bic::INVALID_COUNTRY_CODE_ERROR],
+            ['DSBA5NBXSHA', Bic::INVALID_COUNTRY_CODE_ERROR],
 
             // branch code error
-            array('THISSVAL1D]', Bic::INVALID_CHARACTERS_ERROR),
+            ['THISSVAL1D]', Bic::INVALID_CHARACTERS_ERROR],
 
             // location code error
-            array('DEUTDEF]', Bic::INVALID_CHARACTERS_ERROR),
+            ['DEUTDEF]', Bic::INVALID_CHARACTERS_ERROR],
 
             // lower case values are invalid
-            array('DeutAT2LXXX', Bic::INVALID_CASE_ERROR),
-            array('DEUTAT2lxxx', Bic::INVALID_CASE_ERROR),
-        );
+            ['DeutAT2LXXX', Bic::INVALID_CASE_ERROR],
+            ['DEUTAT2lxxx', Bic::INVALID_CASE_ERROR],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/BlankValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/BlankValidatorTest.php
index 94c653b105a9..1d138348a9e7 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/BlankValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/BlankValidatorTest.php
@@ -41,9 +41,9 @@ public function testBlankIsValid()
      */
     public function testInvalidValues($value, $valueAsString)
     {
-        $constraint = new Blank(array(
+        $constraint = new Blank([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -55,11 +55,11 @@ public function testInvalidValues($value, $valueAsString)
 
     public function getInvalidValues()
     {
-        return array(
-            array('foobar', '"foobar"'),
-            array(0, '0'),
-            array(false, 'false'),
-            array(1234, '1234'),
-        );
+        return [
+            ['foobar', '"foobar"'],
+            [0, '0'],
+            [false, 'false'],
+            [1234, '1234'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CallbackValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CallbackValidatorTest.php
index cb1b5c7b012c..1c771c2c13aa 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CallbackValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CallbackValidatorTest.php
@@ -21,7 +21,7 @@ class CallbackValidatorTest_Class
 {
     public static function validateCallback($object, ExecutionContextInterface $context)
     {
-        $context->addViolation('Callback message', array('{{ value }}' => 'foobar'));
+        $context->addViolation('Callback message', ['{{ value }}' => 'foobar']);
 
         return false;
     }
@@ -31,14 +31,14 @@ class CallbackValidatorTest_Object
 {
     public function validate(ExecutionContextInterface $context)
     {
-        $context->addViolation('My message', array('{{ value }}' => 'foobar'));
+        $context->addViolation('My message', ['{{ value }}' => 'foobar']);
 
         return false;
     }
 
     public static function validateStatic($object, ExecutionContextInterface $context)
     {
-        $context->addViolation('Static message', array('{{ value }}' => 'baz'));
+        $context->addViolation('Static message', ['{{ value }}' => 'baz']);
 
         return false;
     }
@@ -73,7 +73,7 @@ public function testSingleMethod()
     public function testSingleMethodExplicitName()
     {
         $object = new CallbackValidatorTest_Object();
-        $constraint = new Callback(array('callback' => 'validate'));
+        $constraint = new Callback(['callback' => 'validate']);
 
         $this->validator->validate($object, $constraint);
 
@@ -98,7 +98,7 @@ public function testClosure()
     {
         $object = new CallbackValidatorTest_Object();
         $constraint = new Callback(function ($object, ExecutionContextInterface $context) {
-            $context->addViolation('My message', array('{{ value }}' => 'foobar'));
+            $context->addViolation('My message', ['{{ value }}' => 'foobar']);
 
             return false;
         });
@@ -113,7 +113,7 @@ public function testClosure()
     public function testClosureNullObject()
     {
         $constraint = new Callback(function ($object, ExecutionContextInterface $context) {
-            $context->addViolation('My message', array('{{ value }}' => 'foobar'));
+            $context->addViolation('My message', ['{{ value }}' => 'foobar']);
 
             return false;
         });
@@ -128,13 +128,13 @@ public function testClosureNullObject()
     public function testClosureExplicitName()
     {
         $object = new CallbackValidatorTest_Object();
-        $constraint = new Callback(array(
+        $constraint = new Callback([
             'callback' => function ($object, ExecutionContextInterface $context) {
-                $context->addViolation('My message', array('{{ value }}' => 'foobar'));
+                $context->addViolation('My message', ['{{ value }}' => 'foobar']);
 
                 return false;
             },
-        ));
+        ]);
 
         $this->validator->validate($object, $constraint);
 
@@ -146,7 +146,7 @@ public function testClosureExplicitName()
     public function testArrayCallable()
     {
         $object = new CallbackValidatorTest_Object();
-        $constraint = new Callback(array(__CLASS__.'_Class', 'validateCallback'));
+        $constraint = new Callback([__CLASS__.'_Class', 'validateCallback']);
 
         $this->validator->validate($object, $constraint);
 
@@ -157,7 +157,7 @@ public function testArrayCallable()
 
     public function testArrayCallableNullObject()
     {
-        $constraint = new Callback(array(__CLASS__.'_Class', 'validateCallback'));
+        $constraint = new Callback([__CLASS__.'_Class', 'validateCallback']);
 
         $this->validator->validate(null, $constraint);
 
@@ -169,9 +169,9 @@ public function testArrayCallableNullObject()
     public function testArrayCallableExplicitName()
     {
         $object = new CallbackValidatorTest_Object();
-        $constraint = new Callback(array(
-            'callback' => array(__CLASS__.'_Class', 'validateCallback'),
-        ));
+        $constraint = new Callback([
+            'callback' => [__CLASS__.'_Class', 'validateCallback'],
+        ]);
 
         $this->validator->validate($object, $constraint);
 
@@ -187,7 +187,7 @@ public function testExpectValidMethods()
     {
         $object = new CallbackValidatorTest_Object();
 
-        $this->validator->validate($object, new Callback(array('callback' => array('foobar'))));
+        $this->validator->validate($object, new Callback(['callback' => ['foobar']]));
     }
 
     /**
@@ -197,13 +197,13 @@ public function testExpectValidCallbacks()
     {
         $object = new CallbackValidatorTest_Object();
 
-        $this->validator->validate($object, new Callback(array('callback' => array('foo', 'bar'))));
+        $this->validator->validate($object, new Callback(['callback' => ['foo', 'bar']]));
     }
 
     public function testConstraintGetTargets()
     {
-        $constraint = new Callback(array());
-        $targets = array(Constraint::CLASS_CONSTRAINT, Constraint::PROPERTY_CONSTRAINT);
+        $constraint = new Callback([]);
+        $targets = [Constraint::CLASS_CONSTRAINT, Constraint::PROPERTY_CONSTRAINT];
 
         $this->assertEquals($targets, $constraint->getTargets());
     }
@@ -213,21 +213,21 @@ public function testNoConstructorArguments()
     {
         $constraint = new Callback();
 
-        $this->assertSame(array(Constraint::CLASS_CONSTRAINT, Constraint::PROPERTY_CONSTRAINT), $constraint->getTargets());
+        $this->assertSame([Constraint::CLASS_CONSTRAINT, Constraint::PROPERTY_CONSTRAINT], $constraint->getTargets());
     }
 
     public function testAnnotationInvocationSingleValued()
     {
-        $constraint = new Callback(array('value' => 'validateStatic'));
+        $constraint = new Callback(['value' => 'validateStatic']);
 
         $this->assertEquals(new Callback('validateStatic'), $constraint);
     }
 
     public function testAnnotationInvocationMultiValued()
     {
-        $constraint = new Callback(array('value' => array(__CLASS__.'_Class', 'validateCallback')));
+        $constraint = new Callback(['value' => [__CLASS__.'_Class', 'validateCallback']]);
 
-        $this->assertEquals(new Callback(array(__CLASS__.'_Class', 'validateCallback')), $constraint);
+        $this->assertEquals(new Callback([__CLASS__.'_Class', 'validateCallback']), $constraint);
     }
 
     public function testPayloadIsPassedToCallback()
@@ -235,21 +235,21 @@ public function testPayloadIsPassedToCallback()
         $object = new \stdClass();
         $payloadCopy = null;
 
-        $constraint = new Callback(array(
+        $constraint = new Callback([
             'callback' => function ($object, ExecutionContextInterface $constraint, $payload) use (&$payloadCopy) {
                 $payloadCopy = $payload;
             },
             'payload' => 'Hello world!',
-        ));
+        ]);
         $this->validator->validate($object, $constraint);
         $this->assertEquals('Hello world!', $payloadCopy);
 
         $payloadCopy = null;
-        $constraint = new Callback(array(
+        $constraint = new Callback([
             'callback' => function ($object, ExecutionContextInterface $constraint, $payload) use (&$payloadCopy) {
                 $payloadCopy = $payload;
             },
-        ));
+        ]);
         $this->validator->validate($object, $constraint);
         $this->assertNull($payloadCopy);
     }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CardSchemeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CardSchemeValidatorTest.php
index b0280713d528..5350a1d4a8a4 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CardSchemeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CardSchemeValidatorTest.php
@@ -24,14 +24,14 @@ protected function createValidator()
 
     public function testNullIsValid()
     {
-        $this->validator->validate(null, new CardScheme(array('schemes' => array())));
+        $this->validator->validate(null, new CardScheme(['schemes' => []]));
 
         $this->assertNoViolation();
     }
 
     public function testEmptyStringIsValid()
     {
-        $this->validator->validate('', new CardScheme(array('schemes' => array())));
+        $this->validator->validate('', new CardScheme(['schemes' => []]));
 
         $this->assertNoViolation();
     }
@@ -41,7 +41,7 @@ public function testEmptyStringIsValid()
      */
     public function testValidNumbers($scheme, $number)
     {
-        $this->validator->validate($number, new CardScheme(array('schemes' => $scheme)));
+        $this->validator->validate($number, new CardScheme(['schemes' => $scheme]));
 
         $this->assertNoViolation();
     }
@@ -51,10 +51,10 @@ public function testValidNumbers($scheme, $number)
      */
     public function testInvalidNumbers($scheme, $number, $code)
     {
-        $constraint = new CardScheme(array(
+        $constraint = new CardScheme([
             'schemes' => $scheme,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($number, $constraint);
 
@@ -66,73 +66,73 @@ public function testInvalidNumbers($scheme, $number, $code)
 
     public function getValidNumbers()
     {
-        return array(
-            array('AMEX', '378282246310005'),
-            array('AMEX', '371449635398431'),
-            array('AMEX', '378734493671000'),
-            array('AMEX', '347298508610146'),
-            array('CHINA_UNIONPAY', '6228888888888888'),
-            array('CHINA_UNIONPAY', '62288888888888888'),
-            array('CHINA_UNIONPAY', '622888888888888888'),
-            array('CHINA_UNIONPAY', '6228888888888888888'),
-            array('DINERS', '30569309025904'),
-            array('DINERS', '36088894118515'),
-            array('DINERS', '38520000023237'),
-            array('DISCOVER', '6011111111111117'),
-            array('DISCOVER', '6011000990139424'),
-            array('INSTAPAYMENT', '6372476031350068'),
-            array('INSTAPAYMENT', '6385537775789749'),
-            array('INSTAPAYMENT', '6393440808445746'),
-            array('JCB', '3530111333300000'),
-            array('JCB', '3566002020360505'),
-            array('JCB', '213112345678901'),
-            array('JCB', '180012345678901'),
-            array('LASER', '6304678107004080'),
-            array('LASER', '6706440607428128629'),
-            array('LASER', '6771656738314582216'),
-            array('MAESTRO', '6759744069209'),
-            array('MAESTRO', '5020507657408074712'),
-            array('MAESTRO', '5612559223580173965'),
-            array('MAESTRO', '6759744069209'),
-            array('MAESTRO', '6594371785970435599'),
-            array('MASTERCARD', '5555555555554444'),
-            array('MASTERCARD', '5105105105105100'),
-            array('MASTERCARD', '2221005555554444'),
-            array('MASTERCARD', '2230000000000000'),
-            array('MASTERCARD', '2300000000000000'),
-            array('MASTERCARD', '2699999999999999'),
-            array('MASTERCARD', '2709999999999999'),
-            array('MASTERCARD', '2720995105105100'),
-            array('VISA', '4111111111111111'),
-            array('VISA', '4012888888881881'),
-            array('VISA', '4222222222222'),
-            array('VISA', '4917610000000000003'),
-            array(array('AMEX', 'VISA'), '4111111111111111'),
-            array(array('AMEX', 'VISA'), '378282246310005'),
-            array(array('JCB', 'MASTERCARD'), '5105105105105100'),
-            array(array('VISA', 'MASTERCARD'), '5105105105105100'),
-        );
+        return [
+            ['AMEX', '378282246310005'],
+            ['AMEX', '371449635398431'],
+            ['AMEX', '378734493671000'],
+            ['AMEX', '347298508610146'],
+            ['CHINA_UNIONPAY', '6228888888888888'],
+            ['CHINA_UNIONPAY', '62288888888888888'],
+            ['CHINA_UNIONPAY', '622888888888888888'],
+            ['CHINA_UNIONPAY', '6228888888888888888'],
+            ['DINERS', '30569309025904'],
+            ['DINERS', '36088894118515'],
+            ['DINERS', '38520000023237'],
+            ['DISCOVER', '6011111111111117'],
+            ['DISCOVER', '6011000990139424'],
+            ['INSTAPAYMENT', '6372476031350068'],
+            ['INSTAPAYMENT', '6385537775789749'],
+            ['INSTAPAYMENT', '6393440808445746'],
+            ['JCB', '3530111333300000'],
+            ['JCB', '3566002020360505'],
+            ['JCB', '213112345678901'],
+            ['JCB', '180012345678901'],
+            ['LASER', '6304678107004080'],
+            ['LASER', '6706440607428128629'],
+            ['LASER', '6771656738314582216'],
+            ['MAESTRO', '6759744069209'],
+            ['MAESTRO', '5020507657408074712'],
+            ['MAESTRO', '5612559223580173965'],
+            ['MAESTRO', '6759744069209'],
+            ['MAESTRO', '6594371785970435599'],
+            ['MASTERCARD', '5555555555554444'],
+            ['MASTERCARD', '5105105105105100'],
+            ['MASTERCARD', '2221005555554444'],
+            ['MASTERCARD', '2230000000000000'],
+            ['MASTERCARD', '2300000000000000'],
+            ['MASTERCARD', '2699999999999999'],
+            ['MASTERCARD', '2709999999999999'],
+            ['MASTERCARD', '2720995105105100'],
+            ['VISA', '4111111111111111'],
+            ['VISA', '4012888888881881'],
+            ['VISA', '4222222222222'],
+            ['VISA', '4917610000000000003'],
+            [['AMEX', 'VISA'], '4111111111111111'],
+            [['AMEX', 'VISA'], '378282246310005'],
+            [['JCB', 'MASTERCARD'], '5105105105105100'],
+            [['VISA', 'MASTERCARD'], '5105105105105100'],
+        ];
     }
 
     public function getInvalidNumbers()
     {
-        return array(
-            array('VISA', '42424242424242424242', CardScheme::INVALID_FORMAT_ERROR),
-            array('AMEX', '357298508610146', CardScheme::INVALID_FORMAT_ERROR),
-            array('DINERS', '31569309025904', CardScheme::INVALID_FORMAT_ERROR),
-            array('DINERS', '37088894118515', CardScheme::INVALID_FORMAT_ERROR),
-            array('INSTAPAYMENT', '6313440808445746', CardScheme::INVALID_FORMAT_ERROR),
-            array('CHINA_UNIONPAY', '622888888888888', CardScheme::INVALID_FORMAT_ERROR),
-            array('CHINA_UNIONPAY', '62288888888888888888', CardScheme::INVALID_FORMAT_ERROR),
-            array('AMEX', '30569309025904', CardScheme::INVALID_FORMAT_ERROR), // DINERS number
-            array('AMEX', 'invalid', CardScheme::NOT_NUMERIC_ERROR), // A string
-            array('AMEX', 0, CardScheme::INVALID_FORMAT_ERROR), // a lone number
-            array('AMEX', '0', CardScheme::INVALID_FORMAT_ERROR), // a lone number
-            array('AMEX', '000000000000', CardScheme::INVALID_FORMAT_ERROR), // a lone number
-            array('DINERS', '3056930', CardScheme::INVALID_FORMAT_ERROR), // only first part of the number
-            array('DISCOVER', '1117', CardScheme::INVALID_FORMAT_ERROR), // only last 4 digits
-            array('MASTERCARD', '2721001234567890', CardScheme::INVALID_FORMAT_ERROR), // Not assigned yet
-            array('MASTERCARD', '2220991234567890', CardScheme::INVALID_FORMAT_ERROR), // Not assigned yet
-        );
+        return [
+            ['VISA', '42424242424242424242', CardScheme::INVALID_FORMAT_ERROR],
+            ['AMEX', '357298508610146', CardScheme::INVALID_FORMAT_ERROR],
+            ['DINERS', '31569309025904', CardScheme::INVALID_FORMAT_ERROR],
+            ['DINERS', '37088894118515', CardScheme::INVALID_FORMAT_ERROR],
+            ['INSTAPAYMENT', '6313440808445746', CardScheme::INVALID_FORMAT_ERROR],
+            ['CHINA_UNIONPAY', '622888888888888', CardScheme::INVALID_FORMAT_ERROR],
+            ['CHINA_UNIONPAY', '62288888888888888888', CardScheme::INVALID_FORMAT_ERROR],
+            ['AMEX', '30569309025904', CardScheme::INVALID_FORMAT_ERROR], // DINERS number
+            ['AMEX', 'invalid', CardScheme::NOT_NUMERIC_ERROR], // A string
+            ['AMEX', 0, CardScheme::INVALID_FORMAT_ERROR], // a lone number
+            ['AMEX', '0', CardScheme::INVALID_FORMAT_ERROR], // a lone number
+            ['AMEX', '000000000000', CardScheme::INVALID_FORMAT_ERROR], // a lone number
+            ['DINERS', '3056930', CardScheme::INVALID_FORMAT_ERROR], // only first part of the number
+            ['DISCOVER', '1117', CardScheme::INVALID_FORMAT_ERROR], // only last 4 digits
+            ['MASTERCARD', '2721001234567890', CardScheme::INVALID_FORMAT_ERROR], // Not assigned yet
+            ['MASTERCARD', '2220991234567890', CardScheme::INVALID_FORMAT_ERROR], // Not assigned yet
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
index 01483161c9fc..1f312cda1704 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
@@ -17,7 +17,7 @@
 
 function choice_callback()
 {
-    return array('foo', 'bar');
+    return ['foo', 'bar'];
 }
 
 class ChoiceValidatorTest extends ConstraintValidatorTestCase
@@ -29,12 +29,12 @@ protected function createValidator()
 
     public static function staticCallback()
     {
-        return array('foo', 'bar');
+        return ['foo', 'bar'];
     }
 
     public function objectMethodCallback()
     {
-        return array('foo', 'bar');
+        return ['foo', 'bar'];
     }
 
     /**
@@ -42,11 +42,11 @@ public function objectMethodCallback()
      */
     public function testExpectArrayIfMultipleIsTrue()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar'],
             'multiple' => true,
             'strict' => true,
-        ));
+        ]);
 
         $this->validator->validate('asdf', $constraint);
     }
@@ -56,10 +56,10 @@ public function testNullIsValid()
         $this->validator->validate(
             null,
             new Choice(
-                array(
-                    'choices' => array('foo', 'bar'),
+                [
+                    'choices' => ['foo', 'bar'],
                     'strict' => true,
-                )
+                ]
             )
         );
 
@@ -71,7 +71,7 @@ public function testNullIsValid()
      */
     public function testChoicesOrCallbackExpected()
     {
-        $this->validator->validate('foobar', new Choice(array('strict' => true)));
+        $this->validator->validate('foobar', new Choice(['strict' => true]));
     }
 
     /**
@@ -79,12 +79,12 @@ public function testChoicesOrCallbackExpected()
      */
     public function testValidCallbackExpected()
     {
-        $this->validator->validate('foobar', new Choice(array('callback' => 'abcd', 'strict' => true)));
+        $this->validator->validate('foobar', new Choice(['callback' => 'abcd', 'strict' => true]));
     }
 
     public function testValidChoiceArray()
     {
-        $constraint = new Choice(array('choices' => array('foo', 'bar'), 'strict' => true));
+        $constraint = new Choice(['choices' => ['foo', 'bar'], 'strict' => true]);
 
         $this->validator->validate('bar', $constraint);
 
@@ -93,7 +93,7 @@ public function testValidChoiceArray()
 
     public function testValidChoiceCallbackFunction()
     {
-        $constraint = new Choice(array('callback' => __NAMESPACE__.'\choice_callback', 'strict' => true));
+        $constraint = new Choice(['callback' => __NAMESPACE__.'\choice_callback', 'strict' => true]);
 
         $this->validator->validate('bar', $constraint);
 
@@ -103,12 +103,12 @@ public function testValidChoiceCallbackFunction()
     public function testValidChoiceCallbackClosure()
     {
         $constraint = new Choice(
-            array(
+            [
                 'strict' => true,
                 'callback' => function () {
-                    return array('foo', 'bar');
+                    return ['foo', 'bar'];
                 },
-            )
+            ]
         );
 
         $this->validator->validate('bar', $constraint);
@@ -118,7 +118,7 @@ public function testValidChoiceCallbackClosure()
 
     public function testValidChoiceCallbackStaticMethod()
     {
-        $constraint = new Choice(array('callback' => array(__CLASS__, 'staticCallback'), 'strict' => true));
+        $constraint = new Choice(['callback' => [__CLASS__, 'staticCallback'], 'strict' => true]);
 
         $this->validator->validate('bar', $constraint);
 
@@ -130,7 +130,7 @@ public function testValidChoiceCallbackContextMethod()
         // search $this for "staticCallback"
         $this->setObject($this);
 
-        $constraint = new Choice(array('callback' => 'staticCallback', 'strict' => true));
+        $constraint = new Choice(['callback' => 'staticCallback', 'strict' => true]);
 
         $this->validator->validate('bar', $constraint);
 
@@ -142,7 +142,7 @@ public function testValidChoiceCallbackContextObjectMethod()
         // search $this for "objectMethodCallback"
         $this->setObject($this);
 
-        $constraint = new Choice(array('callback' => 'objectMethodCallback', 'strict' => true));
+        $constraint = new Choice(['callback' => 'objectMethodCallback', 'strict' => true]);
 
         $this->validator->validate('bar', $constraint);
 
@@ -151,24 +151,24 @@ public function testValidChoiceCallbackContextObjectMethod()
 
     public function testMultipleChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar', 'baz'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar', 'baz'],
             'multiple' => true,
             'strict' => true,
-        ));
+        ]);
 
-        $this->validator->validate(array('baz', 'bar'), $constraint);
+        $this->validator->validate(['baz', 'bar'], $constraint);
 
         $this->assertNoViolation();
     }
 
     public function testInvalidChoice()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar'],
             'message' => 'myMessage',
             'strict' => true,
-        ));
+        ]);
 
         $this->validator->validate('baz', $constraint);
 
@@ -180,13 +180,13 @@ public function testInvalidChoice()
 
     public function testInvalidChoiceEmptyChoices()
     {
-        $constraint = new Choice(array(
+        $constraint = new Choice([
             // May happen when the choices are provided dynamically, e.g. from
             // the DB or the model
-            'choices' => array(),
+            'choices' => [],
             'message' => 'myMessage',
             'strict' => true,
-        ));
+        ]);
 
         $this->validator->validate('baz', $constraint);
 
@@ -198,14 +198,14 @@ public function testInvalidChoiceEmptyChoices()
 
     public function testInvalidChoiceMultiple()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar'],
             'multipleMessage' => 'myMessage',
             'multiple' => true,
             'strict' => true,
-        ));
+        ]);
 
-        $this->validator->validate(array('foo', 'baz'), $constraint);
+        $this->validator->validate(['foo', 'baz'], $constraint);
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ value }}', '"baz"')
@@ -216,15 +216,15 @@ public function testInvalidChoiceMultiple()
 
     public function testTooFewChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar', 'moo', 'maa'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar', 'moo', 'maa'],
             'multiple' => true,
             'min' => 2,
             'minMessage' => 'myMessage',
             'strict' => true,
-        ));
+        ]);
 
-        $value = array('foo');
+        $value = ['foo'];
 
         $this->setValue($value);
 
@@ -240,15 +240,15 @@ public function testTooFewChoices()
 
     public function testTooManyChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar', 'moo', 'maa'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar', 'moo', 'maa'],
             'multiple' => true,
             'max' => 2,
             'maxMessage' => 'myMessage',
             'strict' => true,
-        ));
+        ]);
 
-        $value = array('foo', 'bar', 'moo');
+        $value = ['foo', 'bar', 'moo'];
 
         $this->setValue($value);
 
@@ -267,10 +267,10 @@ public function testTooManyChoices()
      */
     public function testNonStrict()
     {
-        $constraint = new Choice(array(
-            'choices' => array(1, 2),
+        $constraint = new Choice([
+            'choices' => [1, 2],
             'strict' => false,
-        ));
+        ]);
 
         $this->validator->validate('2', $constraint);
         $this->validator->validate(2, $constraint);
@@ -280,10 +280,10 @@ public function testNonStrict()
 
     public function testStrictAllowsExactValue()
     {
-        $constraint = new Choice(array(
-            'choices' => array(1, 2),
+        $constraint = new Choice([
+            'choices' => [1, 2],
             'strict' => true,
-        ));
+        ]);
 
         $this->validator->validate(2, $constraint);
 
@@ -292,11 +292,11 @@ public function testStrictAllowsExactValue()
 
     public function testStrictDisallowsDifferentType()
     {
-        $constraint = new Choice(array(
-            'choices' => array(1, 2),
+        $constraint = new Choice([
+            'choices' => [1, 2],
             'strict' => true,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('2', $constraint);
 
@@ -311,27 +311,27 @@ public function testStrictDisallowsDifferentType()
      */
     public function testNonStrictWithMultipleChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array(1, 2, 3),
+        $constraint = new Choice([
+            'choices' => [1, 2, 3],
             'multiple' => true,
             'strict' => false,
-        ));
+        ]);
 
-        $this->validator->validate(array('2', 3), $constraint);
+        $this->validator->validate(['2', 3], $constraint);
 
         $this->assertNoViolation();
     }
 
     public function testStrictWithMultipleChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array(1, 2, 3),
+        $constraint = new Choice([
+            'choices' => [1, 2, 3],
             'multiple' => true,
             'strict' => true,
             'multipleMessage' => 'myMessage',
-        ));
+        ]);
 
-        $this->validator->validate(array(2, '3'), $constraint);
+        $this->validator->validate([2, '3'], $constraint);
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ value }}', '"3"')
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CollectionTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CollectionTest.php
index b5fbf6c0b097..fec935082afe 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CollectionTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CollectionTest.php
@@ -28,9 +28,9 @@ class CollectionTest extends TestCase
      */
     public function testRejectInvalidFieldsOption()
     {
-        new Collection(array(
+        new Collection([
             'fields' => 'foo',
-        ));
+        ]);
     }
 
     /**
@@ -38,9 +38,9 @@ public function testRejectInvalidFieldsOption()
      */
     public function testRejectNonConstraints()
     {
-        new Collection(array(
+        new Collection([
             'foo' => 'bar',
-        ));
+        ]);
     }
 
     /**
@@ -48,9 +48,9 @@ public function testRejectNonConstraints()
      */
     public function testRejectValidConstraint()
     {
-        new Collection(array(
+        new Collection([
             'foo' => new Valid(),
-        ));
+        ]);
     }
 
     /**
@@ -58,9 +58,9 @@ public function testRejectValidConstraint()
      */
     public function testRejectValidConstraintWithinOptional()
     {
-        new Collection(array(
+        new Collection([
             'foo' => new Optional(new Valid()),
-        ));
+        ]);
     }
 
     /**
@@ -68,45 +68,45 @@ public function testRejectValidConstraintWithinOptional()
      */
     public function testRejectValidConstraintWithinRequired()
     {
-        new Collection(array(
+        new Collection([
             'foo' => new Required(new Valid()),
-        ));
+        ]);
     }
 
     public function testAcceptOptionalConstraintAsOneElementArray()
     {
-        $collection1 = new Collection(array(
-            'fields' => array(
-                'alternate_email' => array(
+        $collection1 = new Collection([
+            'fields' => [
+                'alternate_email' => [
                     new Optional(new Email()),
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
-        $collection2 = new Collection(array(
-            'fields' => array(
+        $collection2 = new Collection([
+            'fields' => [
                 'alternate_email' => new Optional(new Email()),
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertEquals($collection1, $collection2);
     }
 
     public function testAcceptRequiredConstraintAsOneElementArray()
     {
-        $collection1 = new Collection(array(
-            'fields' => array(
-                'alternate_email' => array(
+        $collection1 = new Collection([
+            'fields' => [
+                'alternate_email' => [
                     new Required(new Email()),
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
-        $collection2 = new Collection(array(
-            'fields' => array(
+        $collection2 = new Collection([
+            'fields' => [
                 'alternate_email' => new Required(new Email()),
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertEquals($collection1, $collection2);
     }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CollectionValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CollectionValidatorTest.php
index 32aa8e359e77..fa2ee0985ef1 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CollectionValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CollectionValidatorTest.php
@@ -30,24 +30,24 @@ abstract protected function prepareTestData(array $contents);
 
     public function testNullIsValid()
     {
-        $this->validator->validate(null, new Collection(array('fields' => array(
-            'foo' => new Range(array('min' => 4)),
-        ))));
+        $this->validator->validate(null, new Collection(['fields' => [
+            'foo' => new Range(['min' => 4]),
+        ]]));
 
         $this->assertNoViolation();
     }
 
     public function testFieldsAsDefaultOption()
     {
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $data = $this->prepareTestData(array('foo' => 'foobar'));
+        $data = $this->prepareTestData(['foo' => 'foobar']);
 
-        $this->expectValidateValueAt(0, '[foo]', $data['foo'], array($constraint));
+        $this->expectValidateValueAt(0, '[foo]', $data['foo'], [$constraint]);
 
-        $this->validator->validate($data, new Collection(array(
+        $this->validator->validate($data, new Collection([
             'foo' => $constraint,
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
@@ -57,49 +57,49 @@ public function testFieldsAsDefaultOption()
      */
     public function testThrowsExceptionIfNotTraversable()
     {
-        $this->validator->validate('foobar', new Collection(array('fields' => array(
-            'foo' => new Range(array('min' => 4)),
-        ))));
+        $this->validator->validate('foobar', new Collection(['fields' => [
+            'foo' => new Range(['min' => 4]),
+        ]]));
     }
 
     public function testWalkSingleConstraint()
     {
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $array = array(
+        $array = [
             'foo' => 3,
             'bar' => 5,
-        );
+        ];
 
         $i = 0;
 
         foreach ($array as $key => $value) {
-            $this->expectValidateValueAt($i++, '['.$key.']', $value, array($constraint));
+            $this->expectValidateValueAt($i++, '['.$key.']', $value, [$constraint]);
         }
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->validate($data, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($data, new Collection([
+            'fields' => [
                 'foo' => $constraint,
                 'bar' => $constraint,
-            ),
-        )));
+            ],
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testWalkMultipleConstraints()
     {
-        $constraints = array(
-            new Range(array('min' => 4)),
+        $constraints = [
+            new Range(['min' => 4]),
             new NotNull(),
-        );
+        ];
 
-        $array = array(
+        $array = [
             'foo' => 3,
             'bar' => 5,
-        );
+        ];
 
         $i = 0;
 
@@ -109,33 +109,33 @@ public function testWalkMultipleConstraints()
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->validate($data, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($data, new Collection([
+            'fields' => [
                 'foo' => $constraints,
                 'bar' => $constraints,
-            ),
-        )));
+            ],
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testExtraFieldsDisallowed()
     {
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $data = $this->prepareTestData(array(
+        $data = $this->prepareTestData([
             'foo' => 5,
             'baz' => 6,
-        ));
+        ]);
 
-        $this->expectValidateValueAt(0, '[foo]', $data['foo'], array($constraint));
+        $this->expectValidateValueAt(0, '[foo]', $data['foo'], [$constraint]);
 
-        $this->validator->validate($data, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($data, new Collection([
+            'fields' => [
                 'foo' => $constraint,
-            ),
+            ],
             'extraFieldsMessage' => 'myMessage',
-        )));
+        ]));
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ field }}', '"baz"')
@@ -148,56 +148,56 @@ public function testExtraFieldsDisallowed()
     // bug fix
     public function testNullNotConsideredExtraField()
     {
-        $data = $this->prepareTestData(array(
+        $data = $this->prepareTestData([
             'foo' => null,
-        ));
+        ]);
 
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $this->expectValidateValueAt(0, '[foo]', $data['foo'], array($constraint));
+        $this->expectValidateValueAt(0, '[foo]', $data['foo'], [$constraint]);
 
-        $this->validator->validate($data, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($data, new Collection([
+            'fields' => [
                 'foo' => $constraint,
-            ),
-        )));
+            ],
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testExtraFieldsAllowed()
     {
-        $data = $this->prepareTestData(array(
+        $data = $this->prepareTestData([
             'foo' => 5,
             'bar' => 6,
-        ));
+        ]);
 
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $this->expectValidateValueAt(0, '[foo]', $data['foo'], array($constraint));
+        $this->expectValidateValueAt(0, '[foo]', $data['foo'], [$constraint]);
 
-        $this->validator->validate($data, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($data, new Collection([
+            'fields' => [
                 'foo' => $constraint,
-            ),
+            ],
             'allowExtraFields' => true,
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testMissingFieldsDisallowed()
     {
-        $data = $this->prepareTestData(array());
+        $data = $this->prepareTestData([]);
 
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $this->validator->validate($data, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($data, new Collection([
+            'fields' => [
                 'foo' => $constraint,
-            ),
+            ],
             'missingFieldsMessage' => 'myMessage',
-        )));
+        ]));
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ field }}', '"foo"')
@@ -209,108 +209,108 @@ public function testMissingFieldsDisallowed()
 
     public function testMissingFieldsAllowed()
     {
-        $data = $this->prepareTestData(array());
+        $data = $this->prepareTestData([]);
 
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $this->validator->validate($data, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($data, new Collection([
+            'fields' => [
                 'foo' => $constraint,
-            ),
+            ],
             'allowMissingFields' => true,
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testOptionalFieldPresent()
     {
-        $data = $this->prepareTestData(array(
+        $data = $this->prepareTestData([
             'foo' => null,
-        ));
+        ]);
 
-        $this->validator->validate($data, new Collection(array(
+        $this->validator->validate($data, new Collection([
             'foo' => new Optional(),
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testOptionalFieldNotPresent()
     {
-        $data = $this->prepareTestData(array());
+        $data = $this->prepareTestData([]);
 
-        $this->validator->validate($data, new Collection(array(
+        $this->validator->validate($data, new Collection([
             'foo' => new Optional(),
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testOptionalFieldSingleConstraint()
     {
-        $array = array(
+        $array = [
             'foo' => 5,
-        );
+        ];
 
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $this->expectValidateValueAt(0, '[foo]', $array['foo'], array($constraint));
+        $this->expectValidateValueAt(0, '[foo]', $array['foo'], [$constraint]);
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->validate($data, new Collection(array(
+        $this->validator->validate($data, new Collection([
             'foo' => new Optional($constraint),
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testOptionalFieldMultipleConstraints()
     {
-        $array = array(
+        $array = [
             'foo' => 5,
-        );
+        ];
 
-        $constraints = array(
+        $constraints = [
             new NotNull(),
-            new Range(array('min' => 4)),
-        );
+            new Range(['min' => 4]),
+        ];
 
         $this->expectValidateValueAt(0, '[foo]', $array['foo'], $constraints);
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->validate($data, new Collection(array(
+        $this->validator->validate($data, new Collection([
             'foo' => new Optional($constraints),
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testRequiredFieldPresent()
     {
-        $data = $this->prepareTestData(array(
+        $data = $this->prepareTestData([
             'foo' => null,
-        ));
+        ]);
 
-        $this->validator->validate($data, new Collection(array(
+        $this->validator->validate($data, new Collection([
             'foo' => new Required(),
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testRequiredFieldNotPresent()
     {
-        $data = $this->prepareTestData(array());
+        $data = $this->prepareTestData([]);
 
-        $this->validator->validate($data, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($data, new Collection([
+            'fields' => [
                 'foo' => new Required(),
-            ),
+            ],
             'missingFieldsMessage' => 'myMessage',
-        )));
+        ]));
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ field }}', '"foo"')
@@ -322,63 +322,63 @@ public function testRequiredFieldNotPresent()
 
     public function testRequiredFieldSingleConstraint()
     {
-        $array = array(
+        $array = [
             'foo' => 5,
-        );
+        ];
 
-        $constraint = new Range(array('min' => 4));
+        $constraint = new Range(['min' => 4]);
 
-        $this->expectValidateValueAt(0, '[foo]', $array['foo'], array($constraint));
+        $this->expectValidateValueAt(0, '[foo]', $array['foo'], [$constraint]);
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->validate($data, new Collection(array(
+        $this->validator->validate($data, new Collection([
             'foo' => new Required($constraint),
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testRequiredFieldMultipleConstraints()
     {
-        $array = array(
+        $array = [
             'foo' => 5,
-        );
+        ];
 
-        $constraints = array(
+        $constraints = [
             new NotNull(),
-            new Range(array('min' => 4)),
-        );
+            new Range(['min' => 4]),
+        ];
 
         $this->expectValidateValueAt(0, '[foo]', $array['foo'], $constraints);
 
         $data = $this->prepareTestData($array);
 
-        $this->validator->validate($data, new Collection(array(
+        $this->validator->validate($data, new Collection([
             'foo' => new Required($constraints),
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function testObjectShouldBeLeftUnchanged()
     {
-        $value = new \ArrayObject(array(
+        $value = new \ArrayObject([
             'foo' => 3,
-        ));
+        ]);
 
-        $constraint = new Range(array('min' => 2));
+        $constraint = new Range(['min' => 2]);
 
-        $this->expectValidateValueAt(0, '[foo]', $value['foo'], array($constraint));
+        $this->expectValidateValueAt(0, '[foo]', $value['foo'], [$constraint]);
 
-        $this->validator->validate($value, new Collection(array(
-            'fields' => array(
+        $this->validator->validate($value, new Collection([
+            'fields' => [
                 'foo' => $constraint,
-            ),
-        )));
+            ],
+        ]));
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'foo' => 3,
-        ), (array) $value);
+        ], (array) $value);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CompositeTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CompositeTest.php
index df4255007c5c..3070e6a22f33 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CompositeTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CompositeTest.php
@@ -39,44 +39,44 @@ class CompositeTest extends TestCase
 {
     public function testMergeNestedGroupsIfNoExplicitParentGroup()
     {
-        $constraint = new ConcreteComposite(array(
-            new NotNull(array('groups' => 'Default')),
-            new NotBlank(array('groups' => array('Default', 'Strict'))),
-        ));
-
-        $this->assertEquals(array('Default', 'Strict'), $constraint->groups);
-        $this->assertEquals(array('Default'), $constraint->constraints[0]->groups);
-        $this->assertEquals(array('Default', 'Strict'), $constraint->constraints[1]->groups);
+        $constraint = new ConcreteComposite([
+            new NotNull(['groups' => 'Default']),
+            new NotBlank(['groups' => ['Default', 'Strict']]),
+        ]);
+
+        $this->assertEquals(['Default', 'Strict'], $constraint->groups);
+        $this->assertEquals(['Default'], $constraint->constraints[0]->groups);
+        $this->assertEquals(['Default', 'Strict'], $constraint->constraints[1]->groups);
     }
 
     public function testSetImplicitNestedGroupsIfExplicitParentGroup()
     {
-        $constraint = new ConcreteComposite(array(
-            'constraints' => array(
+        $constraint = new ConcreteComposite([
+            'constraints' => [
                 new NotNull(),
                 new NotBlank(),
-            ),
-            'groups' => array('Default', 'Strict'),
-        ));
+            ],
+            'groups' => ['Default', 'Strict'],
+        ]);
 
-        $this->assertEquals(array('Default', 'Strict'), $constraint->groups);
-        $this->assertEquals(array('Default', 'Strict'), $constraint->constraints[0]->groups);
-        $this->assertEquals(array('Default', 'Strict'), $constraint->constraints[1]->groups);
+        $this->assertEquals(['Default', 'Strict'], $constraint->groups);
+        $this->assertEquals(['Default', 'Strict'], $constraint->constraints[0]->groups);
+        $this->assertEquals(['Default', 'Strict'], $constraint->constraints[1]->groups);
     }
 
     public function testExplicitNestedGroupsMustBeSubsetOfExplicitParentGroups()
     {
-        $constraint = new ConcreteComposite(array(
-            'constraints' => array(
-                new NotNull(array('groups' => 'Default')),
-                new NotBlank(array('groups' => 'Strict')),
-            ),
-            'groups' => array('Default', 'Strict'),
-        ));
-
-        $this->assertEquals(array('Default', 'Strict'), $constraint->groups);
-        $this->assertEquals(array('Default'), $constraint->constraints[0]->groups);
-        $this->assertEquals(array('Strict'), $constraint->constraints[1]->groups);
+        $constraint = new ConcreteComposite([
+            'constraints' => [
+                new NotNull(['groups' => 'Default']),
+                new NotBlank(['groups' => 'Strict']),
+            ],
+            'groups' => ['Default', 'Strict'],
+        ]);
+
+        $this->assertEquals(['Default', 'Strict'], $constraint->groups);
+        $this->assertEquals(['Default'], $constraint->constraints[0]->groups);
+        $this->assertEquals(['Strict'], $constraint->constraints[1]->groups);
     }
 
     /**
@@ -84,26 +84,26 @@ public function testExplicitNestedGroupsMustBeSubsetOfExplicitParentGroups()
      */
     public function testFailIfExplicitNestedGroupsNotSubsetOfExplicitParentGroups()
     {
-        new ConcreteComposite(array(
-            'constraints' => array(
-                new NotNull(array('groups' => array('Default', 'Foobar'))),
-            ),
-            'groups' => array('Default', 'Strict'),
-        ));
+        new ConcreteComposite([
+            'constraints' => [
+                new NotNull(['groups' => ['Default', 'Foobar']]),
+            ],
+            'groups' => ['Default', 'Strict'],
+        ]);
     }
 
     public function testImplicitGroupNamesAreForwarded()
     {
-        $constraint = new ConcreteComposite(array(
-            new NotNull(array('groups' => 'Default')),
-            new NotBlank(array('groups' => 'Strict')),
-        ));
+        $constraint = new ConcreteComposite([
+            new NotNull(['groups' => 'Default']),
+            new NotBlank(['groups' => 'Strict']),
+        ]);
 
         $constraint->addImplicitGroupName('ImplicitGroup');
 
-        $this->assertEquals(array('Default', 'Strict', 'ImplicitGroup'), $constraint->groups);
-        $this->assertEquals(array('Default', 'ImplicitGroup'), $constraint->constraints[0]->groups);
-        $this->assertEquals(array('Strict'), $constraint->constraints[1]->groups);
+        $this->assertEquals(['Default', 'Strict', 'ImplicitGroup'], $constraint->groups);
+        $this->assertEquals(['Default', 'ImplicitGroup'], $constraint->constraints[0]->groups);
+        $this->assertEquals(['Strict'], $constraint->constraints[1]->groups);
     }
 
     public function testSingleConstraintsAccepted()
@@ -111,7 +111,7 @@ public function testSingleConstraintsAccepted()
         $nestedConstraint = new NotNull();
         $constraint = new ConcreteComposite($nestedConstraint);
 
-        $this->assertEquals(array($nestedConstraint), $constraint->constraints);
+        $this->assertEquals([$nestedConstraint], $constraint->constraints);
     }
 
     /**
@@ -119,10 +119,10 @@ public function testSingleConstraintsAccepted()
      */
     public function testFailIfNoConstraint()
     {
-        new ConcreteComposite(array(
-            new NotNull(array('groups' => 'Default')),
+        new ConcreteComposite([
+            new NotNull(['groups' => 'Default']),
             'NotBlank',
-        ));
+        ]);
     }
 
     /**
@@ -130,10 +130,10 @@ public function testFailIfNoConstraint()
      */
     public function testFailIfNoConstraintObject()
     {
-        new ConcreteComposite(array(
-            new NotNull(array('groups' => 'Default')),
+        new ConcreteComposite([
+            new NotNull(['groups' => 'Default']),
             new \ArrayObject(),
-        ));
+        ]);
     }
 
     /**
@@ -141,8 +141,8 @@ public function testFailIfNoConstraintObject()
      */
     public function testValidCantBeNested()
     {
-        new ConcreteComposite(array(
+        new ConcreteComposite([
             new Valid(),
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CountValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CountValidatorTest.php
index d23188a09821..8416136fd4af 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CountValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CountValidatorTest.php
@@ -44,29 +44,29 @@ public function testExpectsCountableType()
 
     public function getThreeOrLessElements()
     {
-        return array(
-            array($this->createCollection(array(1))),
-            array($this->createCollection(array(1, 2))),
-            array($this->createCollection(array(1, 2, 3))),
-            array($this->createCollection(array('a' => 1, 'b' => 2, 'c' => 3))),
-        );
+        return [
+            [$this->createCollection([1])],
+            [$this->createCollection([1, 2])],
+            [$this->createCollection([1, 2, 3])],
+            [$this->createCollection(['a' => 1, 'b' => 2, 'c' => 3])],
+        ];
     }
 
     public function getFourElements()
     {
-        return array(
-            array($this->createCollection(array(1, 2, 3, 4))),
-            array($this->createCollection(array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 4))),
-        );
+        return [
+            [$this->createCollection([1, 2, 3, 4])],
+            [$this->createCollection(['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4])],
+        ];
     }
 
     public function getFiveOrMoreElements()
     {
-        return array(
-            array($this->createCollection(array(1, 2, 3, 4, 5))),
-            array($this->createCollection(array(1, 2, 3, 4, 5, 6))),
-            array($this->createCollection(array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5))),
-        );
+        return [
+            [$this->createCollection([1, 2, 3, 4, 5])],
+            [$this->createCollection([1, 2, 3, 4, 5, 6])],
+            [$this->createCollection(['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5])],
+        ];
     }
 
     /**
@@ -74,7 +74,7 @@ public function getFiveOrMoreElements()
      */
     public function testValidValuesMax($value)
     {
-        $constraint = new Count(array('max' => 3));
+        $constraint = new Count(['max' => 3]);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -85,7 +85,7 @@ public function testValidValuesMax($value)
      */
     public function testValidValuesMin($value)
     {
-        $constraint = new Count(array('min' => 5));
+        $constraint = new Count(['min' => 5]);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -107,10 +107,10 @@ public function testValidValuesExact($value)
      */
     public function testTooManyValues($value)
     {
-        $constraint = new Count(array(
+        $constraint = new Count([
             'max' => 4,
             'maxMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -128,10 +128,10 @@ public function testTooManyValues($value)
      */
     public function testTooFewValues($value)
     {
-        $constraint = new Count(array(
+        $constraint = new Count([
             'min' => 4,
             'minMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -149,11 +149,11 @@ public function testTooFewValues($value)
      */
     public function testTooManyValuesExact($value)
     {
-        $constraint = new Count(array(
+        $constraint = new Count([
             'min' => 4,
             'max' => 4,
             'exactMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -171,11 +171,11 @@ public function testTooManyValuesExact($value)
      */
     public function testTooFewValuesExact($value)
     {
-        $constraint = new Count(array(
+        $constraint = new Count([
             'min' => 4,
             'max' => 4,
             'exactMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CountryValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CountryValidatorTest.php
index 044a742db630..23c528363000 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CountryValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CountryValidatorTest.php
@@ -57,11 +57,11 @@ public function testValidCountries($country)
 
     public function getValidCountries()
     {
-        return array(
-            array('GB'),
-            array('AT'),
-            array('MY'),
-        );
+        return [
+            ['GB'],
+            ['AT'],
+            ['MY'],
+        ];
     }
 
     /**
@@ -69,9 +69,9 @@ public function getValidCountries()
      */
     public function testInvalidCountries($country)
     {
-        $constraint = new Country(array(
+        $constraint = new Country([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($country, $constraint);
 
@@ -83,10 +83,10 @@ public function testInvalidCountries($country)
 
     public function getInvalidCountries()
     {
-        return array(
-            array('foobar'),
-            array('EN'),
-        );
+        return [
+            ['foobar'],
+            ['EN'],
+        ];
     }
 
     public function testValidateUsingCountrySpecificLocale()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/CurrencyValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/CurrencyValidatorTest.php
index 1286ff31f89f..c699f851f26f 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/CurrencyValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/CurrencyValidatorTest.php
@@ -71,13 +71,13 @@ public function testValidCurrenciesWithCountrySpecificLocale($currency)
 
     public function getValidCurrencies()
     {
-        return array(
-            array('EUR'),
-            array('USD'),
-            array('SIT'),
-            array('AUD'),
-            array('CAD'),
-        );
+        return [
+            ['EUR'],
+            ['USD'],
+            ['SIT'],
+            ['AUD'],
+            ['CAD'],
+        ];
     }
 
     /**
@@ -85,9 +85,9 @@ public function getValidCurrencies()
      */
     public function testInvalidCurrencies($currency)
     {
-        $constraint = new Currency(array(
+        $constraint = new Currency([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($currency, $constraint);
 
@@ -99,9 +99,9 @@ public function testInvalidCurrencies($currency)
 
     public function getInvalidCurrencies()
     {
-        return array(
-            array('EN'),
-            array('foobar'),
-        );
+        return [
+            ['EN'],
+            ['foobar'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
index fe553100339f..6a8fa15b4203 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
@@ -77,9 +77,9 @@ public function testDateTimeWithDefaultFormat()
      */
     public function testValidDateTimes($format, $dateTime)
     {
-        $constraint = new DateTime(array(
+        $constraint = new DateTime([
             'format' => $format,
-        ));
+        ]);
 
         $this->validator->validate($dateTime, $constraint);
 
@@ -88,13 +88,13 @@ public function testValidDateTimes($format, $dateTime)
 
     public function getValidDateTimes()
     {
-        return array(
-            array('Y-m-d H:i:s e', '1995-03-24 00:00:00 UTC'),
-            array('Y-m-d H:i:s', '2010-01-01 01:02:03'),
-            array('Y/m/d H:i', '2010/01/01 01:02'),
-            array('F d, Y', 'December 31, 1999'),
-            array('d-m-Y', '10-05-1995'),
-        );
+        return [
+            ['Y-m-d H:i:s e', '1995-03-24 00:00:00 UTC'],
+            ['Y-m-d H:i:s', '2010-01-01 01:02:03'],
+            ['Y/m/d H:i', '2010/01/01 01:02'],
+            ['F d, Y', 'December 31, 1999'],
+            ['d-m-Y', '10-05-1995'],
+        ];
     }
 
     /**
@@ -102,10 +102,10 @@ public function getValidDateTimes()
      */
     public function testInvalidDateTimes($format, $dateTime, $code)
     {
-        $constraint = new DateTime(array(
+        $constraint = new DateTime([
             'message' => 'myMessage',
             'format' => $format,
-        ));
+        ]);
 
         $this->validator->validate($dateTime, $constraint);
 
@@ -117,17 +117,17 @@ public function testInvalidDateTimes($format, $dateTime, $code)
 
     public function getInvalidDateTimes()
     {
-        return array(
-            array('Y-m-d', 'foobar', DateTime::INVALID_FORMAT_ERROR),
-            array('H:i', '00:00:00', DateTime::INVALID_FORMAT_ERROR),
-        
10000
    array('Y-m-d', '2010-01-01 00:00', DateTime::INVALID_FORMAT_ERROR),
-            array('Y-m-d e', '2010-01-01 TCU', DateTime::INVALID_FORMAT_ERROR),
-            array('Y-m-d H:i:s', '2010-13-01 00:00:00', DateTime::INVALID_DATE_ERROR),
-            array('Y-m-d H:i:s', '2010-04-32 00:00:00', DateTime::INVALID_DATE_ERROR),
-            array('Y-m-d H:i:s', '2010-02-29 00:00:00', DateTime::INVALID_DATE_ERROR),
-            array('Y-m-d H:i:s', '2010-01-01 24:00:00', DateTime::INVALID_TIME_ERROR),
-            array('Y-m-d H:i:s', '2010-01-01 00:60:00', DateTime::INVALID_TIME_ERROR),
-            array('Y-m-d H:i:s', '2010-01-01 00:00:60', DateTime::INVALID_TIME_ERROR),
-        );
+        return [
+            ['Y-m-d', 'foobar', DateTime::INVALID_FORMAT_ERROR],
+            ['H:i', '00:00:00', DateTime::INVALID_FORMAT_ERROR],
+            ['Y-m-d', '2010-01-01 00:00', DateTime::INVALID_FORMAT_ERROR],
+            ['Y-m-d e', '2010-01-01 TCU', DateTime::INVALID_FORMAT_ERROR],
+            ['Y-m-d H:i:s', '2010-13-01 00:00:00', DateTime::INVALID_DATE_ERROR],
+            ['Y-m-d H:i:s', '2010-04-32 00:00:00', DateTime::INVALID_DATE_ERROR],
+            ['Y-m-d H:i:s', '2010-02-29 00:00:00', DateTime::INVALID_DATE_ERROR],
+            ['Y-m-d H:i:s', '2010-01-01 24:00:00', DateTime::INVALID_TIME_ERROR],
+            ['Y-m-d H:i:s', '2010-01-01 00:60:00', DateTime::INVALID_TIME_ERROR],
+            ['Y-m-d H:i:s', '2010-01-01 00:00:60', DateTime::INVALID_TIME_ERROR],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/DateValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/DateValidatorTest.php
index 3b2b189a5521..0e0114f0ae65 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/DateValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/DateValidatorTest.php
@@ -70,11 +70,11 @@ public function testValidDates($date)
 
     public function getValidDates()
     {
-        return array(
-            array('2010-01-01'),
-            array('1955-12-12'),
-            array('2030-05-31'),
-        );
+        return [
+            ['2010-01-01'],
+            ['1955-12-12'],
+            ['2030-05-31'],
+        ];
     }
 
     /**
@@ -82,9 +82,9 @@ public function getValidDates()
      */
     public function testInvalidDates($date, $code)
     {
-        $constraint = new Date(array(
+        $constraint = new Date([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($date, $constraint);
 
@@ -96,13 +96,13 @@ public function testInvalidDates($date, $code)
 
     public function getInvalidDates()
     {
-        return array(
-            array('foobar', Date::INVALID_FORMAT_ERROR),
-            array('foobar 2010-13-01', Date::INVALID_FORMAT_ERROR),
-            array('2010-13-01 foobar', Date::INVALID_FORMAT_ERROR),
-            array('2010-13-01', Date::INVALID_DATE_ERROR),
-            array('2010-04-32', Date::INVALID_DATE_ERROR),
-            array('2010-02-29', Date::INVALID_DATE_ERROR),
-        );
+        return [
+            ['foobar', Date::INVALID_FORMAT_ERROR],
+            ['foobar 2010-13-01', Date::INVALID_FORMAT_ERROR],
+            ['2010-13-01 foobar', Date::INVALID_FORMAT_ERROR],
+            ['2010-13-01', Date::INVALID_DATE_ERROR],
+            ['2010-04-32', Date::INVALID_DATE_ERROR],
+            ['2010-02-29', Date::INVALID_DATE_ERROR],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
index ff6d5c466c36..60cf10e4cac8 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
@@ -60,11 +60,11 @@ public function testValidEmails($email)
 
     public function getValidEmails()
     {
-        return array(
-            array('fabien@symfony.com'),
-            array('example@example.co.uk'),
-            array('fabien_potencier@example.fr'),
-        );
+        return [
+            ['fabien@symfony.com'],
+            ['example@example.co.uk'],
+            ['fabien_potencier@example.fr'],
+        ];
     }
 
     /**
@@ -72,9 +72,9 @@ public function getValidEmails()
      */
     public function testInvalidEmails($email)
     {
-        $constraint = new Email(array(
+        $constraint = new Email([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($email, $constraint);
 
@@ -86,17 +86,17 @@ public function testInvalidEmails($email)
 
     public function getInvalidEmails()
     {
-        return array(
-            array('example'),
-            array('example@'),
-            array('example@localhost'),
-            array('foo@example.com bar'),
-        );
+        return [
+            ['example'],
+            ['example@'],
+            ['example@localhost'],
+            ['foo@example.com bar'],
+        ];
     }
 
     public function testStrict()
     {
-        $constraint = new Email(array('strict' => true));
+        $constraint = new Email(['strict' => true]);
 
         $this->validator->validate('example@localhost', $constraint);
 
@@ -108,10 +108,10 @@ public function testStrict()
      */
     public function testStrictWithInvalidEmails($email)
     {
-        $constraint = new Email(array(
+        $constraint = new Email([
             'message' => 'myMessage',
             'strict' => true,
-        ));
+        ]);
 
         $this->validator->validate($email, $constraint);
 
@@ -127,55 +127,55 @@ public function testStrictWithInvalidEmails($email)
      */
     public function getInvalidEmailsForStrictChecks()
     {
-        return array(
-            array('test@example.com test'),
-            array('user  name@example.com'),
-            array('user   name@example.com'),
-            array('example.@example.co.uk'),
-            array('example@example@example.co.uk'),
-            array('(test_exampel@example.fr)'),
-            array('example(example)example@example.co.uk'),
-            array('.example@localhost'),
-            array('ex\ample@localhost'),
-            array('example@local\host'),
-            array('example@localhost.'),
-            array('user name@example.com'),
-            array('username@ example . com'),
-            array('example@(fake).com'),
-            array('example@(fake.com'),
-            array('username@example,com'),
-            array('usern,ame@example.com'),
-            array('user[na]me@example.com'),
-            array('"""@iana.org'),
-            array('"\"@iana.org'),
-            array('"test"test@iana.org'),
-            array('"test""test"@iana.org'),
-            array('"test"."test"@iana.org'),
-            array('"test".test@iana.org'),
-            array('"test"'.\chr(0).'@iana.org'),
-            array('"test\"@iana.org'),
-            array(\chr(226).'@iana.org'),
-            array('test@'.\chr(226).'.org'),
-            array('\r\ntest@iana.org'),
-            array('\r\n test@iana.org'),
-            array('\r\n \r\ntest@iana.org'),
-            array('\r\n \r\ntest@iana.org'),
-            array('\r\n \r\n test@iana.org'),
-            array('test@iana.org \r\n'),
-            array('test@iana.org \r\n '),
-            array('test@iana.org \r\n \r\n'),
-            array('test@iana.org \r\n\r\n'),
-            array('test@iana.org  \r\n\r\n '),
-            array('test@iana/icann.org'),
-            array('test@foo;bar.com'),
-            array('test;123@foobar.com'),
-            array('test@example..com'),
-            array('email.email@email."'),
-            array('test@email>'),
-            array('test@email<'),
-            array('test@email{'),
-            array(str_repeat('x', 254).'@example.com'), //email with warnings
-        );
+        return [
+            ['test@example.com test'],
+            ['user  name@example.com'],
+            ['user   name@example.com'],
+            ['example.@example.co.uk'],
+            ['example@example@example.co.uk'],
+            ['(test_exampel@example.fr)'],
+            ['example(example)example@example.co.uk'],
+            ['.example@localhost'],
+            ['ex\ample@localhost'],
+            ['example@local\host'],
+            ['example@localhost.'],
+            ['user name@example.com'],
+            ['username@ example . com'],
+            ['example@(fake).com'],
+            ['example@(fake.com'],
+            ['username@example,com'],
+            ['usern,ame@example.com'],
+            ['user[na]me@example.com'],
+            ['"""@iana.org'],
+            ['"\"@iana.org'],
+            ['"test"test@iana.org'],
+            ['"test""test"@iana.org'],
+            ['"test"."test"@iana.org'],
+            ['"test".test@iana.org'],
+            ['"test"'.\chr(0).'@iana.org'],
+            ['"test\"@iana.org'],
+            [\chr(226).'@iana.org'],
+            ['test@'.\chr(226).'.org'],
+            ['\r\ntest@iana.org'],
+            ['\r\n test@iana.org'],
+            ['\r\n \r\ntest@iana.org'],
+            ['\r\n \r\ntest@iana.org'],
+            ['\r\n \r\n test@iana.org'],
+            ['test@iana.org \r\n'],
+            ['test@iana.org \r\n '],
+            ['test@iana.org \r\n \r\n'],
+            ['test@iana.org \r\n\r\n'],
+            ['test@iana.org  \r\n\r\n '],
+            ['test@iana/icann.org'],
+            ['test@foo;bar.com'],
+            ['test;123@foobar.com'],
+            ['test@example..com'],
+            ['email.email@email."'],
+            ['test@email>'],
+            ['test@email<'],
+            ['test@email{'],
+            [str_repeat('x', 254).'@example.com'], //email with warnings
+        ];
     }
 
     /**
@@ -184,12 +184,12 @@ public function getInvalidEmailsForStrictChecks()
      */
     public function testDnsChecks($type, $violation)
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => $violation ? false : $type))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => $violation ? false : $type]]]);
 
-        $constraint = new Email(array(
+        $constraint = new Email([
             'message' => 'myMessage',
             'MX' === $type ? 'checkMX' : 'checkHost' => true,
-        ));
+        ]);
 
         $this->validator->validate('foo@example.com', $constraint);
 
@@ -205,14 +205,14 @@ public function testDnsChecks($type, $violation)
 
     public function getDnsChecks()
     {
-        return array(
-            array('MX', false),
-            array('MX', Email::MX_CHECK_FAILED_ERROR),
-            array('A', false),
-            array('A', Email::HOST_CHECK_FAILED_ERROR),
-            array('AAAA', false),
-            array('AAAA', Email::HOST_CHECK_FAILED_ERROR),
-        );
+        return [
+            ['MX', false],
+            ['MX', Email::MX_CHECK_FAILED_ERROR],
+            ['A', false],
+            ['A', Email::HOST_CHECK_FAILED_ERROR],
+            ['AAAA', false],
+            ['AAAA', Email::HOST_CHECK_FAILED_ERROR],
+        ];
     }
 
     /**
@@ -220,11 +220,11 @@ public function getDnsChecks()
      */
     public function testHostnameIsProperlyParsed()
     {
-        DnsMock::withMockedHosts(array('baz.com' => array(array('type' => 'MX'))));
+        DnsMock::withMockedHosts(['baz.com' => [['type' => 'MX']]]);
 
         $this->validator->validate(
             '"foo@bar"@baz.com',
-            new Email(array('checkMX' => true))
+            new Email(['checkMX' => true])
         );
 
         $this->assertNoViolation();
@@ -237,10 +237,10 @@ public function testEmptyHostIsNotValid($checkType, $violation)
     {
         $this->validator->validate(
             'foo@bar.fr@',
-            new Email(array(
+            new Email([
                 'message' => 'myMessage',
                 $checkType => true,
-            ))
+            ])
         );
 
         $this
@@ -252,9 +252,9 @@ public function testEmptyHostIsNotValid($checkType, $violation)
 
     public function provideCheckTypes()
     {
-        return array(
-            array('checkMX', Email::MX_CHECK_FAILED_ERROR),
-            array('checkHost', Email::HOST_CHECK_FAILED_ERROR),
-        );
+        return [
+            ['checkMX', Email::MX_CHECK_FAILED_ERROR],
+            ['checkHost', Email::HOST_CHECK_FAILED_ERROR],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/EqualToValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/EqualToValidatorTest.php
index e47de8fce2e5..c1eb2f93ad75 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/EqualToValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/EqualToValidatorTest.php
@@ -39,16 +39,16 @@ protected function getErrorCode()
      */
     public function provideValidComparisons()
     {
-        return array(
-            array(3, 3),
-            array(3, '3'),
-            array('a', 'a'),
-            array(new \DateTime('2000-01-01'), new \DateTime('2000-01-01')),
-            array(new \DateTime('2000-01-01'), '2000-01-01'),
-            array(new \DateTime('2000-01-01 UTC'), '2000-01-01 UTC'),
-            array(new ComparisonTest_Class(5), new ComparisonTest_Class(5)),
-            array(null, 1),
-        );
+        return [
+            [3, 3],
+            [3, '3'],
+            ['a', 'a'],
+            [new \DateTime('2000-01-01'), new \DateTime('2000-01-01')],
+            [new \DateTime('2000-01-01'), '2000-01-01'],
+            [new \DateTime('2000-01-01 UTC'), '2000-01-01 UTC'],
+            [new ComparisonTest_Class(5), new ComparisonTest_Class(5)],
+            [null, 1],
+        ];
     }
 
     /**
@@ -56,9 +56,9 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(5),
-        );
+        return [
+            [5],
+        ];
     }
 
     /**
@@ -66,13 +66,13 @@ public function provideValidComparisonsToPropertyPath()
      */
     public function provideInvalidComparisons()
     {
-        return array(
-            array(1, '1', 2, '2', 'integer'),
-            array('22', '"22"', '333', '"333"', 'string'),
-            array(new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2001-01-01 UTC'), 'Jan 1, 2001, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new ComparisonTest_Class(4), '4', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'),
-        );
+        return [
+            [1, '1', 2, '2', 'integer'],
+            ['22', '"22"', '333', '"333"', 'string'],
+            [new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2001-01-01 UTC'), 'Jan 1, 2001, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new ComparisonTest_Class(4), '4', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ExpressionValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ExpressionValidatorTest.php
index 07f17d648aa3..5cffcefd5272 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ExpressionValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ExpressionValidatorTest.php
@@ -26,10 +26,10 @@ protected function createValidator()
 
     public function testExpressionIsEvaluatedWithNullValue()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'false',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate(null, $constraint);
 
@@ -41,10 +41,10 @@ public function testExpressionIsEvaluatedWithNullValue()
 
     public function testExpressionIsEvaluatedWithEmptyStringValue()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'false',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('', $constraint);
 
@@ -70,10 +70,10 @@ public function testSucceedingExpressionAtObjectLevel()
 
     public function testFailingExpressionAtObjectLevel()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'this.data == 1',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $object = new Entity();
         $object->data = '2';
@@ -104,10 +104,10 @@ public function testSucceedingExpressionAtObjectLevelWithToString()
 
     public function testFailingExpressionAtObjectLevelWithToString()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'this.data == 1',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $object = new ToString();
         $object->data = '2';
@@ -140,10 +140,10 @@ public function testSucceedingExpressionAtPropertyLevel()
 
     public function testFailingExpressionAtPropertyLevel()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'value == this.data',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $object = new Entity();
         $object->data = '1';
@@ -182,10 +182,10 @@ public function testSucceedingExpressionAtNestedPropertyLevel()
 
     public function testFailingExpressionAtNestedPropertyLevel()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'value == this.data',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $object = new Entity();
         $object->data = '1';
@@ -229,10 +229,10 @@ public function testSucceedingExpressionAtPropertyLevelWithoutRoot()
      */
     public function testFailingExpressionAtPropertyLevelWithoutRoot()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'value == "1"',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->setRoot('2');
         $this->setPropertyPath('');
@@ -249,9 +249,9 @@ public function testFailingExpressionAtPropertyLevelWithoutRoot()
 
     public function testExpressionLanguageUsage()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'false',
-        ));
+        ]);
 
         $expressionLanguage = $this->getMockBuilder('Symfony\Component\ExpressionLanguage\ExpressionLanguage')->getMock();
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/FileTest.php b/src/Symfony/Component/Validator/Tests/Constraints/FileTest.php
index b7745f44fa13..d3117ed44a24 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/FileTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/FileTest.php
@@ -22,7 +22,7 @@ class FileTest extends TestCase
      */
     public function testMaxSize($maxSize, $bytes, $binaryFormat)
     {
-        $file = new File(array('maxSize' => $maxSize));
+        $file = new File(['maxSize' => $maxSize]);
 
         $this->assertSame($bytes, $file->maxSize);
         $this->assertSame($binaryFormat, $file->binaryFormat);
@@ -31,7 +31,7 @@ public function testMaxSize($maxSize, $bytes, $binaryFormat)
 
     public function testMagicIsset()
     {
-        $file = new File(array('maxSize' => 1));
+        $file = new File(['maxSize' => 1]);
 
         $this->assertTrue($file->__isset('maxSize'));
         $this->assertTrue($file->__isset('groups'));
@@ -56,7 +56,7 @@ public function testMaxSizeCanBeSetAfterInitialization($maxSize, $bytes, $binary
      */
     public function testInvalidValueForMaxSizeThrowsExceptionAfterInitialization($maxSize)
     {
-        $file = new File(array('maxSize' => 1000));
+        $file = new File(['maxSize' => 1000]);
         $file->maxSize = $maxSize;
     }
 
@@ -65,7 +65,7 @@ public function testInvalidValueForMaxSizeThrowsExceptionAfterInitialization($ma
      */
     public function testMaxSizeCannotBeSetToInvalidValueAfterInitialization($maxSize)
     {
-        $file = new File(array('maxSize' => 1000));
+        $file = new File(['maxSize' => 1000]);
 
         try {
             $file->maxSize = $maxSize;
@@ -81,35 +81,35 @@ public function testMaxSizeCannotBeSetToInvalidValueAfterInitialization($maxSize
      */
     public function testInvalidMaxSize($maxSize)
     {
-        new File(array('maxSize' => $maxSize));
+        new File(['maxSize' => $maxSize]);
     }
 
     public function provideValidSizes()
     {
-        return array(
-            array('500', 500, false),
-            array(12300, 12300, false),
-            array('1ki', 1024, true),
-            array('1KI', 1024, true),
-            array('2k', 2000, false),
-            array('2K', 2000, false),
-            array('1mi', 1048576, true),
-            array('1MI', 1048576, true),
-            array('3m', 3000000, false),
-            array('3M', 3000000, false),
-        );
+        return [
+            ['500', 500, false],
+            [12300, 12300, false],
+            ['1ki', 1024, true],
+            ['1KI', 1024, true],
+            ['2k', 2000, false],
+            ['2K', 2000, false],
+            ['1mi', 1048576, true],
+            ['1MI', 1048576, true],
+            ['3m', 3000000, false],
+            ['3M', 3000000, false],
+        ];
     }
 
     public function provideInvalidSizes()
     {
-        return array(
-            array('+100'),
-            array('foo'),
-            array('1Ko'),
-            array('1kio'),
-            array('1G'),
-            array('1Gi'),
-        );
+        return [
+            ['+100'],
+            ['foo'],
+            ['1Ko'],
+            ['1kio'],
+            ['1G'],
+            ['1Gi'],
+        ];
     }
 
     /**
@@ -117,23 +117,23 @@ public function provideInvalidSizes()
      */
     public function testBinaryFormat($maxSize, $guessedFormat, $binaryFormat)
     {
-        $file = new File(array('maxSize' => $maxSize, 'binaryFormat' => $guessedFormat));
+        $file = new File(['maxSize' => $maxSize, 'binaryFormat' => $guessedFormat]);
 
         $this->assertSame($binaryFormat, $file->binaryFormat);
     }
 
     public function provideFormats()
     {
-        return array(
-            array(100, null, false),
-            array(100, true, true),
-            array(100, false, false),
-            array('100K', null, false),
-            array('100K', true, true),
-            array('100K', false, false),
-            array('100Ki', null, true),
-            array('100Ki', true, true),
-            array('100Ki', false, false),
-        );
+        return [
+            [100, null, false],
+            [100, true, true],
+            [100, false, false],
+            ['100K', null, false],
+            ['100K', true, true],
+            ['100K', false, false],
+            ['100Ki', null, true],
+            ['100Ki', true, true],
+            ['100Ki', false, false],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorPathTest.php b/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorPathTest.php
index 11b8d4cb7987..dfd82f15ccf4 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorPathTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorPathTest.php
@@ -22,9 +22,9 @@ protected function getFile($filename)
 
     public function testFileNotFound()
     {
-        $constraint = new File(array(
+        $constraint = new File([
             'notFoundMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('foobar', $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php
index f2b6242d5234..b3428e77828c 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php
@@ -115,44 +115,44 @@ public function provideMaxSizeExceededTests()
         // same unit used to specify the limit.
 
         // As of Symfony 2.5, the above logic is implemented.
-        return array(
+        return [
             // limit in bytes
-            array(1001, 1000, '1001', '1000', 'bytes'),
-            array(1004, 1000, '1004', '1000', 'bytes'),
-            array(1005, 1000, '1.01', '1', 'kB'),
+            [1001, 1000, '1001', '1000', 'bytes'],
+            [1004, 1000, '1004', '1000', 'bytes'],
+            [1005, 1000, '1.01', '1', 'kB'],
 
-            array(1000001, 1000000, '1000001', '1000000', 'bytes'),
-            array(1004999, 1000000, '1005', '1000', 'kB'),
-            array(1005000, 1000000, '1.01', '1', 'MB'),
+            [1000001, 1000000, '1000001', '1000000', 'bytes'],
+            [1004999, 1000000, '1005', '1000', 'kB'],
+            [1005000, 1000000, '1.01', '1', 'MB'],
 
             // limit in kB
-            array(1001, '1k', '1001', '1000', 'bytes'),
-            array(1004, '1k', '1004', '1000', 'bytes'),
-            array(1005, '1k', '1.01', '1', 'kB'),
+            [1001, '1k', '1001', '1000', 'bytes'],
+            [1004, '1k', '1004', '1000', 'bytes'],
+            [1005, '1k', '1.01', '1', 'kB'],
 
-            array(1000001, '1000k', '1000001', '1000000', 'bytes'),
-            array(1004999, '1000k', '1005', '1000', 'kB'),
-            array(1005000, '1000k', '1.01', '1', 'MB'),
+            [1000001, '1000k', '1000001', '1000000', 'bytes'],
+            [1004999, '1000k', '1005', '1000', 'kB'],
+            [1005000, '1000k', '1.01', '1', 'MB'],
 
             // limit in MB
-            array(1000001, '1M', '1000001', '1000000', 'bytes'),
-            array(1004999, '1M', '1005', '1000', 'kB'),
-            array(1005000, '1M', '1.01', '1', 'MB'),
+            [1000001, '1M', '1000001', '1000000', 'bytes'],
+            [1004999, '1M', '1005', '1000', 'kB'],
+            [1005000, '1M', '1.01', '1', 'MB'],
 
             // limit in KiB
-            array(1025, '1Ki', '1025', '1024', 'bytes'),
-            array(1029, '1Ki', '1029', '1024', 'bytes'),
-            array(1030, '1Ki', '1.01', '1', 'KiB'),
+            [1025, '1Ki', '1025', '1024', 'bytes'],
+            [1029, '1Ki', '1029', '1024', 'bytes'],
+            [1030, '1Ki', '1.01', '1', 'KiB'],
 
-            array(1048577, '1024Ki', '1048577', '1048576', 'bytes'),
-            array(1053818, '1024Ki', '1029.12', '1024', 'KiB'),
-            array(1053819, '1024Ki', '1.01', '1', 'MiB'),
+            [1048577, '1024Ki', '1048577', '1048576', 'bytes'],
+            [1053818, '1024Ki', '1029.12', '1024', 'KiB'],
+            [1053819, '1024Ki', '1.01', '1', 'MiB'],
 
             // limit in MiB
-            array(1048577, '1Mi', '1048577', '1048576', 'bytes'),
-            array(1053818, '1Mi', '1029.12', '1024', 'KiB'),
-            array(1053819, '1Mi', '1.01', '1', 'MiB'),
-        );
+            [1048577, '1Mi', '1048577', '1048576', 'bytes'],
+            [1053818, '1Mi', '1029.12', '1024', 'KiB'],
+            [1053819, '1Mi', '1.01', '1', 'MiB'],
+        ];
     }
 
     /**
@@ -164,10 +164,10 @@ public function testMaxSizeExceeded($bytesWritten, $limit, $sizeAsString, $limit
         fwrite($this->file, '0');
         fclose($this->file);
 
-        $constraint = new File(array(
+        $constraint = new File([
             'maxSize' => $limit,
             'maxSizeMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->getFile($this->path), $constraint);
 
@@ -182,25 +182,25 @@ public function testMaxSizeExceeded($bytesWritten, $limit, $sizeAsString, $limit
 
     public function provideMaxSizeNotExceededTests()
     {
-        return array(
+        return [
             // limit in bytes
-            array(1000, 1000),
-            array(1000000, 1000000),
+            [1000, 1000],
+            [1000000, 1000000],
 
             // limit in kB
-            array(1000, '1k'),
-            array(1000000, '1000k'),
+            [1000, '1k'],
+            [1000000, '1000k'],
 
             // limit in MB
-            array(1000000, '1M'),
+            [1000000, '1M'],
 
             // limit in KiB
-            array(1024, '1Ki'),
-            array(1048576, '1024Ki'),
+            [1024, '1Ki'],
+            [1048576, '1024Ki'],
 
             // limit in MiB
-            array(1048576, '1Mi'),
-        );
+            [1048576, '1Mi'],
+        ];
     }
 
     /**
@@ -212,10 +212,10 @@ public function testMaxSizeNotExceeded($bytesWritten, $limit)
         fwrite($this->file, '0');
         fclose($this->file);
 
-        $constraint = new File(array(
+        $constraint = new File([
             'maxSize' => $limit,
             'maxSizeMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->getFile($this->path), $constraint);
 
@@ -227,33 +227,33 @@ public function testMaxSizeNotExceeded($bytesWritten, $limit)
      */
     public function testInvalidMaxSize()
     {
-        $constraint = new File(array(
+        $constraint = new File([
             'maxSize' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->path, $constraint);
     }
 
     public function provideBinaryFormatTests()
     {
-        return array(
-            array(11, 10, null, '11', '10', 'bytes'),
-            array(11, 10, true, '11', '10', 'bytes'),
-            array(11, 10, false, '11', '10', 'bytes'),
+        return [
+            [11, 10, null, '11', '10', 'bytes'],
+            [11, 10, true, '11', '10', 'bytes'],
+            [11, 10, false, '11', '10', 'bytes'],
 
             // round(size) == 1.01kB, limit == 1kB
-            array(ceil(1000 * 1.01), 1000, null, '1.01', '1', 'kB'),
-            array(ceil(1000 * 1.01), '1k', null, '1.01', '1', 'kB'),
-            array(ceil(1024 * 1.01), '1Ki', null, '1.01', '1', 'KiB'),
-
-            array(ceil(1024 * 1.01), 1024, true, '1.01', '1', 'KiB'),
-            array(ceil(1024 * 1.01 * 1000), '1024k', true, '1010', '1000', 'KiB'),
-            array(ceil(1024 * 1.01), '1Ki', true, '1.01', '1', 'KiB'),
-
-            array(ceil(1000 * 1.01), 1000, false, '1.01', '1', 'kB'),
-            array(ceil(1000 * 1.01), '1k', false, '1.01', '1', 'kB'),
-            array(ceil(1024 * 1.01 * 10), '10Ki', false, '10.34', '10.24', 'kB'),
-        );
+            [ceil(1000 * 1.01), 1000, null, '1.01', '1', 'kB'],
+            [ceil(1000 * 1.01), '1k', null, '1.01', '1', 'kB'],
+            [ceil(1024 * 1.01), '1Ki', null, '1.01', '1', 'KiB'],
+
+            [ceil(1024 * 1.01), 1024, true, '1.01', '1', 'KiB'],
+            [ceil(1024 * 1.01 * 1000), '1024k', true, '1010', '1000', 'KiB'],
+            [ceil(1024 * 1.01), '1Ki', true, '1.01', '1', 'KiB'],
+
+            [ceil(1000 * 1.01), 1000, false, '1.01', '1', 'kB'],
+            [ceil(1000 * 1.01), '1k', false, '1.01', '1', 'kB'],
+            [ceil(1024 * 1.01 * 10), '10Ki', false, '10.34', '10.24', 'kB'],
+        ];
     }
 
     /**
@@ -265,11 +265,11 @@ public function testBinaryFormat($bytesWritten, $limit, $binaryFormat, $sizeAsSt
         fwrite($this->file, '0');
         fclose($this->file);
 
-        $constraint = new File(array(
+        $constraint = new File([
             'maxSize' => $limit,
             'binaryFormat' => $binaryFormat,
             'maxSizeMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->getFile($this->path), $constraint);
 
@@ -286,7 +286,7 @@ public function testValidMimeType()
     {
         $file = $this
             ->getMockBuilder('Symfony\Component\HttpFoundation\File\File')
-            ->setConstructorArgs(array(__DIR__.'/Fixtures/foo'))
+            ->setConstructorArgs([__DIR__.'/Fixtures/foo'])
             ->getMock();
         $file
             ->expects($this->once())
@@ -297,9 +297,9 @@ public function testValidMimeType()
             ->method('getMimeType')
             ->will($this->returnValue('image/jpg'));
 
-        $constraint = new File(array(
-            'mimeTypes' => array('image/png', 'image/jpg'),
-        ));
+        $constraint = new File([
+            'mimeTypes' => ['image/png', 'image/jpg'],
+        ]);
 
         $this->validator->validate($file, $constraint);
 
@@ -310,7 +310,7 @@ public function testValidWildcardMimeType()
     {
         $file = $this
             ->getMockBuilder('Symfony\Component\HttpFoundation\File\File')
-            ->setConstructorArgs(array(__DIR__.'/Fixtures/foo'))
+            ->setConstructorArgs([__DIR__.'/Fixtures/foo'])
             ->getMock();
         $file
             ->expects($this->once())
@@ -321,9 +321,9 @@ public function testValidWildcardMimeType()
             ->method('getMimeType')
             ->will($this->returnValue('image/jpg'));
 
-        $constraint = new File(array(
-            'mimeTypes' => array('image/*'),
-        ));
+        $constraint = new File([
+            'mimeTypes' => ['image/*'],
+        ]);
 
         $this->validator->validate($file, $constraint);
 
@@ -334,7 +334,7 @@ public function testInvalidMimeType()
     {
         $file = $this
             ->getMockBuilder('Symfony\Component\HttpFoundation\File\File')
-            ->setConstructorArgs(array(__DIR__.'/Fixtures/foo'))
+            ->setConstructorArgs([__DIR__.'/Fixtures/foo'])
             ->getMock();
         $file
             ->expects($this->once())
@@ -345,10 +345,10 @@ public function testInvalidMimeType()
             ->method('getMimeType')
             ->will($this->returnValue('application/pdf'));
 
-        $constraint = new File(array(
-            'mimeTypes' => array('image/png', 'image/jpg'),
+        $constraint = new File([
+            'mimeTypes' => ['image/png', 'image/jpg'],
             'mimeTypesMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($file, $constraint);
 
@@ -364,7 +364,7 @@ public function testInvalidWildcardMimeType()
     {
         $file = $this
             ->getMockBuilder('Symfony\Component\HttpFoundation\File\File')
-            ->setConstructorArgs(array(__DIR__.'/Fixtures/foo'))
+            ->setConstructorArgs([__DIR__.'/Fixtures/foo'])
             ->getMock();
         $file
             ->expects($this->once())
@@ -375,10 +375,10 @@ public function testInvalidWildcardMimeType()
             ->method('getMimeType')
             ->will($this->returnValue('application/pdf'));
 
-        $constraint = new File(array(
-            'mimeTypes' => array('image/*', 'image/jpg'),
+        $constraint = new File([
+            'mimeTypes' => ['image/*', 'image/jpg'],
             'mimeTypesMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($file, $constraint);
 
@@ -394,9 +394,9 @@ public function testDisallowEmpty()
     {
         ftruncate($this->file, 0);
 
-        $constraint = new File(array(
+        $constraint = new File([
             'disallowEmptyMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->getFile($this->path), $constraint);
 
@@ -409,14 +409,14 @@ public function testDisallowEmpty()
     /**
      * @dataProvider uploadedFileErrorProvider
      */
-    public function testUploadedFileError($error, $message, array $params = array(), $maxSize = null)
+    public function testUploadedFileError($error, $message, array $params = [], $maxSize = null)
     {
         $file = new UploadedFile('/path/to/file', 'originalName', 'mime', 0, $error);
 
-        $constraint = new File(array(
+        $constraint = new File([
             $message => 'myMessage',
             'maxSize' => $maxSize,
-        ));
+        ]);
 
         $this->validator->validate($file, $constraint);
 
@@ -428,47 +428,47 @@ public function testUploadedFileError($error, $message, array $params = array(),
 
     public function uploadedFileErrorProvider()
     {
-        $tests = array(
-            array(UPLOAD_ERR_FORM_SIZE, 'uploadFormSizeErrorMessage'),
-            array(UPLOAD_ERR_PARTIAL, 'uploadPartialErrorMessage'),
-            array(UPLOAD_ERR_NO_FILE, 'uploadNoFileErrorMessage'),
-            array(UPLOAD_ERR_NO_TMP_DIR, 'uploadNoTmpDirErrorMessage'),
-            array(UPLOAD_ERR_CANT_WRITE, 'uploadCantWriteErrorMessage'),
-            array(UPLOAD_ERR_EXTENSION, 'uploadExtensionErrorMessage'),
-        );
+        $tests = [
+            [UPLOAD_ERR_FORM_SIZE, 'uploadFormSizeErrorMessage'],
+            [UPLOAD_ERR_PARTIAL, 'uploadPartialErrorMessage'],
+            [UPLOAD_ERR_NO_FILE, 'uploadNoFileErrorMessage'],
+            [UPLOAD_ERR_NO_TMP_DIR, 'uploadNoTmpDirErrorMessage'],
+            [UPLOAD_ERR_CANT_WRITE, 'uploadCantWriteErrorMessage'],
+            [UPLOAD_ERR_EXTENSION, 'uploadExtensionErrorMessage'],
+        ];
 
         if (class_exists('Symfony\Component\HttpFoundation\File\UploadedFile')) {
             // when no maxSize is specified on constraint, it should use the ini value
-            $tests[] = array(UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', array(
+            $tests[] = [UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', [
                 '{{ limit }}' => UploadedFile::getMaxFilesize() / 1048576,
                 '{{ suffix }}' => 'MiB',
-            ));
+            ]];
 
             // it should use the smaller limitation (maxSize option in this case)
-            $tests[] = array(UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', array(
+            $tests[] = [UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', [
                 '{{ limit }}' => 1,
                 '{{ suffix }}' => 'bytes',
-            ), '1');
+            ], '1'];
 
             // access FileValidator::factorizeSizes() private method to format max file size
             $reflection = new \ReflectionClass(\get_class(new FileValidator()));
             $method = $reflection->getMethod('factorizeSizes');
             $method->setAccessible(true);
-            list($sizeAsString, $limit, $suffix) = $method->invokeArgs(new FileValidator(), array(0, UploadedFile::getMaxFilesize(), false));
+            list($sizeAsString, $limit, $suffix) = $method->invokeArgs(new FileValidator(), [0, UploadedFile::getMaxFilesize(), false]);
 
             // it correctly parses the maxSize option and not only uses simple string comparison
             // 1000M should be bigger than the ini value
-            $tests[] = array(UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', array(
+            $tests[] = [UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', [
                 '{{ limit }}' => $limit,
                 '{{ suffix }}' => $suffix,
-            ), '1000M');
+            ], '1000M'];
 
             // it correctly parses the maxSize option and not only uses simple string comparison
             // 1000M should be bigger than the ini value
-            $tests[] = array(UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', array(
+            $tests[] = [UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', [
                 '{{ limit }}' => '0.1',
                 '{{ suffix }}' => 'MB',
-            ), '100K');
+            ], '100K'];
         }
 
         return $tests;
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanOrEqualValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanOrEqualValidatorTest.php
index 22fb9b662bad..d8d8eab8bdee 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanOrEqualValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanOrEqualValidatorTest.php
@@ -39,19 +39,19 @@ protected function getErrorCode()
      */
     public function provideValidComparisons()
     {
-        return array(
-            array(3, 2),
-            array(1, 1),
-            array(new \DateTime('2010/01/01'), new \DateTime('2000/01/01')),
-            array(new \DateTime('2000/01/01'), new \DateTime('2000/01/01')),
-            array(new \DateTime('2010/01/01'), '2000/01/01'),
-            array(new \DateTime('2000/01/01'), '2000/01/01'),
-            array(new \DateTime('2010/01/01 UTC'), '2000/01/01 UTC'),
-            array(new \DateTime('2000/01/01 UTC'), '2000/01/01 UTC'),
-            array('a', 'a'),
-            array('z', 'a'),
-            array(null, 1),
-        );
+        return [
+            [3, 2],
+            [1, 1],
+            [new \DateTime('2010/01/01'), new \DateTime('2000/01/01')],
+            [new \DateTime('2000/01/01'), new \DateTime('2000/01/01')],
+            [new \DateTime('2010/01/01'), '2000/01/01'],
+            [new \DateTime('2000/01/01'), '2000/01/01'],
+            [new \DateTime('2010/01/01 UTC'), '2000/01/01 UTC'],
+            [new \DateTime('2000/01/01 UTC'), '2000/01/01 UTC'],
+            ['a', 'a'],
+            ['z', 'a'],
+            [null, 1],
+        ];
     }
 
     /**
@@ -59,10 +59,10 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(5),
-            array(6),
-        );
+        return [
+            [5],
+            [6],
+        ];
     }
 
     /**
@@ -70,12 +70,12 @@ public function provideValidComparisonsToPropertyPath()
      */
     public function provideInvalidComparisons()
     {
-        return array(
-            array(1, '1', 2, '2', 'integer'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2005/01/01'), 'Jan 1, 2005, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', '2005/01/01', 'Jan 1, 2005, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000/01/01 UTC'), 'Jan 1, 2000, 12:00 AM', '2005/01/01 UTC', 'Jan 1, 2005, 12:00 AM', 'DateTime'),
-            array('b', '"b"', 'c', '"c"', 'string'),
-        );
+        return [
+            [1, '1', 2, '2', 'integer'],
+            [new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2005/01/01'), 'Jan 1, 2005, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', '2005/01/01', 'Jan 1, 2005, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000/01/01 UTC'), 'Jan 1, 2000, 12:00 AM', '2005/01/01 UTC', 'Jan 1, 2005, 12:00 AM', 'DateTime'],
+            ['b', '"b"', 'c', '"c"', 'string'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanValidatorTest.php
index 08446ec84707..e678496c41e6 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanValidatorTest.php
@@ -39,15 +39,15 @@ protected function getErrorCode()
      */
     public function provideValidComparisons()
     {
-        return array(
-            array(2, 1),
-            array(new \DateTime('2005/01/01'), new \DateTime('2001/01/01')),
-            array(new \DateTime('2005/01/01'), '2001/01/01'),
-            array(new \DateTime('2005/01/01 UTC'), '2001/01/01 UTC'),
-            array(new ComparisonTest_Class(5), new ComparisonTest_Class(4)),
-            array('333', '22'),
-            array(null, 1),
-        );
+        return [
+            [2, 1],
+            [new \DateTime('2005/01/01'), new \DateTime('2001/01/01')],
+            [new \DateTime('2005/01/01'), '2001/01/01'],
+            [new \DateTime('2005/01/01 UTC'), '2001/01/01 UTC'],
+            [new ComparisonTest_Class(5), new ComparisonTest_Class(4)],
+            ['333', '22'],
+            [null, 1],
+        ];
     }
 
     /**
@@ -55,9 +55,9 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(6),
-        );
+        return [
+            [6],
+        ];
     }
 
     /**
@@ -65,19 +65,19 @@ public function provideValidComparisonsToPropertyPath()
      */
     public function provideInvalidComparisons()
     {
-        return array(
-            array(1, '1', 2, '2', 'integer'),
-            array(2, '2', 2, '2', 'integer'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2005/01/01'), 'Jan 1, 2005, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', '2005/01/01', 'Jan 1, 2005, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', '2000/01/01', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000/01/01 UTC'), 'Jan 1, 2000, 12:00 AM', '2005/01/01 UTC', 'Jan 1, 2005, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000/01/01 UTC'), 'Jan 1, 2000, 12:00 AM', '2000/01/01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new ComparisonTest_Class(4), '4', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'),
-            array(new ComparisonTest_Class(5), '5', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'),
-            array('22', '"22"', '333', '"333"', 'string'),
-            array('22', '"22"', '22', '"22"', 'string'),
-        );
+        return [
+            [1, '1', 2, '2', 'integer'],
+            [2, '2', 2, '2', 'integer'],
+            [new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2005/01/01'), 'Jan 1, 2005, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', '2005/01/01', 'Jan 1, 2005, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', '2000/01/01', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000/01/01 UTC'), 'Jan 1, 2000, 12:00 AM', '2005/01/01 UTC', 'Jan 1, 2005, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000/01/01 UTC'), 'Jan 1, 2000, 12:00 AM', '2000/01/01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new ComparisonTest_Class(4), '4', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'],
+            [new ComparisonTest_Class(5), '5', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'],
+            ['22', '"22"', '333', '"333"', 'string'],
+            ['22', '"22"', '22', '"22"', 'string'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/GroupSequenceTest.php b/src/Symfony/Component/Validator/Tests/Constraints/GroupSequenceTest.php
index 98653274a9c6..7803a73cc95d 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/GroupSequenceTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/GroupSequenceTest.php
@@ -21,15 +21,15 @@ class GroupSequenceTest extends TestCase
 {
     public function testCreate()
     {
-        $sequence = new GroupSequence(array('Group 1', 'Group 2'));
+        $sequence = new GroupSequence(['Group 1', 'Group 2']);
 
-        $this->assertSame(array('Group 1', 'Group 2'), $sequence->groups);
+        $this->assertSame(['Group 1', 'Group 2'], $sequence->groups);
     }
 
     public function testCreateDoctrineStyle()
     {
-        $sequence = new GroupSequence(array('value' => array('Group 1', 'Group 2')));
+        $sequence = new GroupSequence(['value' => ['Group 1', 'Group 2']]);
 
-        $this->assertSame(array('Group 1', 'Group 2'), $sequence->groups);
+        $this->assertSame(['Group 1', 'Group 2'], $sequence->groups);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IbanValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IbanValidatorTest.php
index e5c63c3654b7..ba426799ca4e 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IbanValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IbanValidatorTest.php
@@ -48,116 +48,116 @@ public function testValidIbans($iban)
 
     public function getValidIbans()
     {
-        return array(
-            array('CH9300762011623852957'), // Switzerland without spaces
-            array('CH93  0076 2011 6238 5295 7'), // Switzerland with multiple spaces
+        return [
+            ['CH9300762011623852957'], // Switzerland without spaces
+            ['CH93  0076 2011 6238 5295 7'], // Switzerland with multiple spaces
 
             // Country list
             // http://www.rbs.co.uk/corporate/international/g0/guide-to-international-business/regulatory-information/iban/iban-example.ashx
 
-            array('AL47 2121 1009 0000 0002 3569 8741'), //Albania
-            array('AD12 0001 2030 2003 5910 0100'), //Andorra
-            array('AT61 1904 3002 3457 3201'), //Austria
-            array('AZ21 NABZ 0000 0000 1370 1000 1944'), //Azerbaijan
-            array('BH67 BMAG 0000 1299 1234 56'), //Bahrain
-            array('BE62 5100 0754 7061'), //Belgium
-            array('BA39 1290 0794 0102 8494'), //Bosnia and Herzegovina
-            array('BG80 BNBG 9661 1020 3456 78'), //Bulgaria
-            array('BY 13 NBRB 3600 900000002Z00AB00'), //Belarus
-            array('BY13 NBRB 3600 900000002Z00AB00'), //Belarus
-            array('BY22NB23324232T78YR7823HR32U'), //Belarus
-            array('HR12 1001 0051 8630 0016 0'), //Croatia
-            array('CY17 0020 0128 0000 0012 0052 7600'), //Cyprus
-            array('CZ65 0800 0000 1920 0014 5399'), //Czech Republic
-            array('DK50 0040 0440 1162 43'), //Denmark
-            array('EE38 2200 2210 2014 5685'), //Estonia
-            array('FO97 5432 0388 8999 44'), //Faroe Islands
-            array('FI21 1234 5600 0007 85'), //Finland
-            array('FR14 2004 1010 0505 0001 3M02 606'), //France
-            array('GE29 NB00 0000 0101 9049 17'), //Georgia
-            array('DE89 3704 0044 0532 0130 00'), //Germany
-            array('GI75 NWBK 0000 0000 7099 453'), //Gibraltar
-            array('GR16 0110 1250 0000 0001 2300 695'), //Greece
-            array('GL56 0444 9876 5432 10'), //Greenland
-            array('HU42 1177 3016 1111 1018 0000 0000'), //Hungary
-            array('IS14 0159 2600 7654 5510 7303 39'), //Iceland
-            array('IE29 AIBK 9311 5212 3456 78'), //Ireland
-            array('IL62 0108 0000 0009 9999 999'), //Israel
-            array('IT40 S054 2811 1010 0000 0123 456'), //Italy
-            array('LV80 BANK 0000 4351 9500 1'), //Latvia
-            array('LB62 0999 0000 0001 0019 0122 9114'), //Lebanon
-            array('LI21 0881 0000 2324 013A A'), //Liechtenstein
-            array('LT12 1000 0111 0100 1000'), //Lithuania
-            array('LU28 0019 4006 4475 0000'), //Luxembourg
-            array('MK072 5012 0000 0589 84'), //Macedonia
-            array('MT84 MALT 0110 0001 2345 MTLC AST0 01S'), //Malta
-            array('MU17 BOMM 0101 1010 3030 0200 000M UR'), //Mauritius
-            array('MD24 AG00 0225 1000 1310 4168'), //Moldova
-            array('MC93 2005 2222 1001 1223 3M44 555'), //Monaco
-            array('ME25 5050 0001 2345 6789 51'), //Montenegro
-            array('NL39 RABO 0300 0652 64'), //Netherlands
-            array('NO93 8601 1117 947'), //Norway
-            array('PK36 SCBL 0000 0011 2345 6702'), //Pakistan
-            array('PL60 1020 1026 0000 0422 7020 1111'), //Poland
-            array('PT50 0002 0123 1234 5678 9015 4'), //Portugal
-            array('RO49 AAAA 1B31 0075 9384 0000'), //Romania
-            array('SM86 U032 2509 8000 0000 0270 100'), //San Marino
-            array('SA03 8000 0000 6080 1016 7519'), //Saudi Arabia
-            array('RS35 2600 0560 1001 6113 79'), //Serbia
-            array('SK31 1200 0000 1987 4263 7541'), //Slovak Republic
-            array('SI56 1910 0000 0123 438'), //Slovenia
-            array('ES80 2310 0001 1800 0001 2345'), //Spain
-            array('SE35 5000 0000 0549 1000 0003'), //Sweden
-            array('CH93 0076 2011 6238 5295 7'), //Switzerland
-            array('TN59 1000 6035 1835 9847 8831'), //Tunisia
-            array('TR33 0006 1005 1978 6457 8413 26'), //Turkey
-            array('AE07 0331 2345 6789 0123 456'), //UAE
-            array('GB12 CPBK 0892 9965 0449 91'), //United Kingdom
+            ['AL47 2121 1009 0000 0002 3569 8741'], //Albania
+            ['AD12 0001 2030 2003 5910 0100'], //Andorra
+            ['AT61 1904 3002 3457 3201'], //Austria
+            ['AZ21 NABZ 0000 0000 1370 1000 1944'], //Azerbaijan
+            ['BH67 BMAG 0000 1299 1234 56'], //Bahrain
+            ['BE62 5100 0754 7061'], //Belgium
+            ['BA39 1290 0794 0102 8494'], //Bosnia and Herzegovina
+            ['BG80 BNBG 9661 1020 3456 78'], //Bulgaria
+            ['BY 13 NBRB 3600 900000002Z00AB00'], //Belarus
+            ['BY13 NBRB 3600 900000002Z00AB00'], //Belarus
+            ['BY22NB23324232T78YR7823HR32U'], //Belarus
+            ['HR12 1001 0051 8630 0016 0'], //Croatia
+            ['CY17 0020 0128 0000 0012 0052 7600'], //Cyprus
+            ['CZ65 0800 0000 1920 0014 5399'], //Czech Republic
+            ['DK50 0040 0440 1162 43'], //Denmark
+            ['EE38 2200 2210 2014 5685'], //Estonia
+            ['FO97 5432 0388 8999 44'], //Faroe Islands
+            ['FI21 1234 5600 0007 85'], //Finland
+            ['FR14 2004 1010 0505 0001 3M02 606'], //France
+            ['GE29 NB00 0000 0101 9049 17'], //Georgia
+            ['DE89 3704 0044 0532 0130 00'], //Germany
+            ['GI75 NWBK 0000 0000 7099 453'], //Gibraltar
+            ['GR16 0110 1250 0000 0001 2300 695'], //Greece
+            ['GL56 0444 9876 5432 10'], //Greenland
+            ['HU42 1177 3016 1111 1018 0000 0000'], //Hungary
+            ['IS14 0159 2600 7654 5510 7303 39'], //Iceland
+            ['IE29 AIBK 9311 5212 3456 78'], //Ireland
+            ['IL62 0108 0000 0009 9999 999'], //Israel
+            ['IT40 S054 2811 1010 0000 0123 456'], //Italy
+            ['LV80 BANK 0000 4351 9500 1'], //Latvia
+            ['LB62 0999 0000 0001 0019 0122 9114'], //Lebanon
+            ['LI21 0881 0000 2324 013A A'], //Liechtenstein
+            ['LT12 1000 0111 0100 1000'], //Lithuania
+            ['LU28 0019 4006 4475 0000'], //Luxembourg
+            ['MK072 5012 0000 0589 84'], //Macedonia
+            ['MT84 MALT 0110 0001 2345 MTLC AST0 01S'], //Malta
+            ['MU17 BOMM 0101 1010 3030 0200 000M UR'], //Mauritius
+            ['MD24 AG00 0225 1000 1310 4168'], //Moldova
+            ['MC93 2005 2222 1001 1223 3M44 555'], //Monaco
+            ['ME25 5050 0001 2345 6789 51'], //Montenegro
+            ['NL39 RABO 0300 0652 64'], //Netherlands
+            ['NO93 8601 1117 947'], //Norway
+            ['PK36 SCBL 0000 0011 2345 6702'], //Pakistan
+            ['PL60 1020 1026 0000 0422 7020 1111'], //Poland
+            ['PT50 0002 0123 1234 5678 9015 4'], //Portugal
+            ['RO49 AAAA 1B31 0075 9384 0000'], //Romania
+            ['SM86 U032 2509 8000 0000 0270 100'], //San Marino
+            ['SA03 8000 0000 6080 1016 7519'], //Saudi Arabia
+            ['RS35 2600 0560 1001 6113 79'], //Serbia
+            ['SK31 1200 0000 1987 4263 7541'], //Slovak Republic
+            ['SI56 1910 0000 0123 438'], //Slovenia
+            ['ES80 2310 0001 1800 0001 2345'], //Spain
+            ['SE35 5000 0000 0549 1000 0003'], //Sweden
+            ['CH93 0076 2011 6238 5295 7'], //Switzerland
+            ['TN59 1000 6035 1835 9847 8831'], //Tunisia
+            ['TR33 0006 1005 1978 6457 8413 26'], //Turkey
+            ['AE07 0331 2345 6789 0123 456'], //UAE
+            ['GB12 CPBK 0892 9965 0449 91'], //United Kingdom
 
             //Extended country list
             //http://www.nordea.com/Our+services/International+products+and+services/Cash+Management/IBAN+countries/908462.html
             // https://www.swift.com/sites/default/files/resources/iban_registry.pdf
-            array('AO06000600000100037131174'), //Angola
-            array('AZ21NABZ00000000137010001944'), //Azerbaijan
-            array('BH29BMAG1299123456BH00'), //Bahrain
-            array('BJ11B00610100400271101192591'), //Benin
-            array('BR9700360305000010009795493P1'), // Brazil
-            array('BR1800000000141455123924100C2'), // Brazil
-            array('VG96VPVG0000012345678901'), //British Virgin Islands
-            array('BF1030134020015400945000643'), //Burkina Faso
-            array('BI43201011067444'), //Burundi
-            array('CM2110003001000500000605306'), //Cameroon
-            array('CV64000300004547069110176'), //Cape Verde
-            array('FR7630007000110009970004942'), //Central African Republic
-            array('CG5230011000202151234567890'), //Congo
-            array('CR05015202001026284066'), //Costa Rica
-            array('DO28BAGR00000001212453611324'), //Dominican Republic
-            array('GT82TRAJ01020000001210029690'), //Guatemala
-            array('IR580540105180021273113007'), //Iran
-            array('IL620108000000099999999'), //Israel
-            array('CI05A00060174100178530011852'), //Ivory Coast
-            array('JO94CBJO0010000000000131000302'), // Jordan
-            array('KZ176010251000042993'), //Kazakhstan
-            array('KW74NBOK0000000000001000372151'), //Kuwait
-            array('LB30099900000001001925579115'), //Lebanon
-            array('MG4600005030010101914016056'), //Madagascar
-            array('ML03D00890170001002120000447'), //Mali
-            array('MR1300012000010000002037372'), //Mauritania
-            array('MU17BOMM0101101030300200000MUR'), //Mauritius
-            array('MZ59000100000011834194157'), //Mozambique
-            array('PS92PALS000000000400123456702'), //Palestinian Territory
-            array('QA58DOHB00001234567890ABCDEFG'), //Qatar
-            array('XK051212012345678906'), //Republic of Kosovo
-            array('PT50000200000163099310355'), //Sao Tome and Principe
-            array('SA0380000000608010167519'), //Saudi Arabia
-            array('SN12K00100152000025690007542'), //Senegal
-            array('TL380080012345678910157'), //Timor-Leste
-            array('TN5914207207100707129648'), //Tunisia
-            array('TR330006100519786457841326'), //Turkey
-            array('UA213223130000026007233566001'), //Ukraine
-            array('AE260211000000230064016'), //United Arab Emirates
-            array('VA59001123000012345678'), //Vatican City State
-        );
+            ['AO06000600000100037131174'], //Angola
+            ['AZ21NABZ00000000137010001944'], //Azerbaijan
+            ['BH29BMAG1299123456BH00'], //Bahrain
+            ['BJ11B00610100400271101192591'], //Benin
+            ['BR9700360305000010009795493P1'], // Brazil
+            ['BR1800000000141455123924100C2'], // Brazil
+            ['VG96VPVG0000012345678901'], //British Virgin Islands
+            ['BF1030134020015400945000643'], //Burkina Faso
+            ['BI43201011067444'], //Burundi
+            ['CM2110003001000500000605306'], //Cameroon
+            ['CV64000300004547069110176'], //Cape Verde
+            ['FR7630007000110009970004942'], //Central African Republic
+            ['CG5230011000202151234567890'], //Congo
+            ['CR05015202001026284066'], //Costa Rica
+            ['DO28BAGR00000001212453611324'], //Dominican Republic
+            ['GT82TRAJ01020000001210029690'], //Guatemala
+            ['IR580540105180021273113007'], //Iran
+            ['IL620108000000099999999'], //Israel
+            ['CI05A00060174100178530011852'], //Ivory Coast
+            ['JO94CBJO0010000000000131000302'], // Jordan
+            ['KZ176010251000042993'], //Kazakhstan
+            ['KW74NBOK0000000000001000372151'], //Kuwait
+            ['LB30099900000001001925579115'], //Lebanon
+            ['MG4600005030010101914016056'], //Madagascar
+            ['ML03D00890170001002120000447'], //Mali
+            ['MR1300012000010000002037372'], //Mauritania
+            ['MU17BOMM0101101030300200000MUR'], //Mauritius
+            ['MZ59000100000011834194157'], //Mozambique
+            ['PS92PALS000000000400123456702'], //Palestinian Territory
+            ['QA58DOHB00001234567890ABCDEFG'], //Qatar
+            ['XK051212012345678906'], //Republic of Kosovo
+            ['PT50000200000163099310355'], //Sao Tome and Principe
+            ['SA0380000000608010167519'], //Saudi Arabia
+            ['SN12K00100152000025690007542'], //Senegal
+            ['TL380080012345678910157'], //Timor-Leste
+            ['TN5914207207100707129648'], //Tunisia
+            ['TR330006100519786457841326'], //Turkey
+            ['UA213223130000026007233566001'], //Ukraine
+            ['AE260211000000230064016'], //United Arab Emirates
+            ['VA59001123000012345678'], //Vatican City State
+        ];
     }
 
     /**
@@ -170,113 +170,113 @@ public function testIbansWithInvalidFormat($iban)
 
     public function getIbansWithInvalidFormat()
     {
-        return array(
-            array('AL47 2121 1009 0000 0002 3569 874'), //Albania
-            array('AD12 0001 2030 2003 5910 010'), //Andorra
-            array('AT61 1904 3002 3457 320'), //Austria
-            array('AZ21 NABZ 0000 0000 1370 1000 194'), //Azerbaijan
-            array('AZ21 N1BZ 0000 0000 1370 1000 1944'), //Azerbaijan
-            array('BH67 BMAG 0000 1299 1234 5'), //Bahrain
-            array('BH67 B2AG 0000 1299 1234 56'), //Bahrain
-            array('BE62 5100 0754 7061 2'), //Belgium
-            array('BA39 1290 0794 0102 8494 4'), //Bosnia and Herzegovina
-            array('BG80 BNBG 9661 1020 3456 7'), //Bulgaria
-            array('BG80 B2BG 9661 1020 3456 78'), //Bulgaria
-            array('BY 13 NBRB 3600 900000002Z00AB001'), //Belarus
-            array('BY 13 NBRB 3600 900000002Z00AB0'), //Belarus
-            array('BYRO NBRB 3600 900000002Z00AB0'), //Belarus
-            array('BY 13 3600 NBRB 900000002Z00AB05'), //Belarus
-            array('HR12 1001 0051 8630 0016 01'), //Croatia
-            array('CY17 0020 0128 0000 0012 0052 7600 1'), //Cyprus
-            array('CZ65 0800 0000 1920 0014 5399 1'), //Czech Republic
-            array('DK50 0040 0440 1162 431'), //Denmark
-            array('EE38 2200 2210 2014 5685 1'), //Estonia
-            array('FO97 5432 0388 8999 441'), //Faroe Islands
-            array('FI21 1234 5600 0007 851'), //Finland
-            array('FR14 2004 1010 0505 0001 3M02 6061'), //France
-            array('GE29 NB00 0000 0101 9049 171'), //Georgia
-            array('DE89 3704 0044 0532 0130 001'), //Germany
-            array('GI75 NWBK 0000 0000 7099 4531'), //Gibraltar
-            array('GR16 0110 1250 0000 0001 2300 6951'), //Greece
-            array('GL56 0444 9876 5432 101'), //Greenland
-            array('HU42 1177 3016 1111 1018 0000 0000 1'), //Hungary
-            array('IS14 0159 2600 7654 5510 7303 391'), //Iceland
-            array('IE29 AIBK 9311 5212 3456 781'), //Ireland
-            array('IL62 0108 0000 0009 9999 9991'), //Israel
-            array('IT40 S054 2811 1010 0000 0123 4561'), //Italy
-            array('LV80 BANK 0000 4351 9500 11'), //Latvia
-            array('LB62 0999 0000 0001 0019 0122 9114 1'), //Lebanon
-            array('LI21 0881 0000 2324 013A A1'), //Liechtenstein
-            array('LT12 1000 0111 0100 1000 1'), //Lithuania
-            array('LU28 0019 4006 4475 0000 1'), //Luxembourg
-            array('MK072 5012 0000 0589 84 1'), //Macedonia
-            array('MT84 MALT 0110 0001 2345 MTLC AST0 01SA'), //Malta
-            array('MU17 BOMM 0101 1010 3030 0200 000M URA'), //Mauritius
-            array('MD24 AG00 0225 1000 1310 4168 1'), //Moldova
-            array('MC93 2005 2222 1001 1223 3M44 5551'), //Monaco
-            array('ME25 5050 0001 2345 6789 511'), //Montenegro
-            array('NL39 RABO 0300 0652 641'), //Netherlands
-            array('NO93 8601 1117 9471'), //Norway
-            array('PK36 SCBL 0000 0011 2345 6702 1'), //Pakistan
-            array('PL60 1020 1026 0000 0422 7020 1111 1'), //Poland
-            array('PT50 0002 0123 1234 5678 9015 41'), //Portugal
-            array('RO49 AAAA 1B31 0075 9384 0000 1'), //Romania
-            array('SM86 U032 2509 8000 0000 0270 1001'), //San Marino
-            array('SA03 8000 0000 6080 1016 7519 1'), //Saudi Arabia
-            array('RS35 2600 0560 1001 6113 791'), //Serbia
-            array('SK31 1200 0000 1987 4263 7541 1'), //Slovak Republic
-            array('SI56 1910 0000 0123 4381'), //Slovenia
-            array('ES80 
10000
2310 0001 1800 0001 2345 1'), //Spain
-            array('SE35 5000 0000 0549 1000 0003 1'), //Sweden
-            array('CH93 0076 2011 6238 5295 71'), //Switzerland
-            array('TN59 1000 6035 1835 9847 8831 1'), //Tunisia
-            array('TR33 0006 1005 1978 6457 8413 261'), //Turkey
-            array('AE07 0331 2345 6789 0123 4561'), //UAE
-            array('GB12 CPBK 0892 9965 0449 911'), //United Kingdom
+        return [
+            ['AL47 2121 1009 0000 0002 3569 874'], //Albania
+            ['AD12 0001 2030 2003 5910 010'], //Andorra
+            ['AT61 1904 3002 3457 320'], //Austria
+            ['AZ21 NABZ 0000 0000 1370 1000 194'], //Azerbaijan
+            ['AZ21 N1BZ 0000 0000 1370 1000 1944'], //Azerbaijan
+            ['BH67 BMAG 0000 1299 1234 5'], //Bahrain
+            ['BH67 B2AG 0000 1299 1234 56'], //Bahrain
+            ['BE62 5100 0754 7061 2'], //Belgium
+            ['BA39 1290 0794 0102 8494 4'], //Bosnia and Herzegovina
+            ['BG80 BNBG 9661 1020 3456 7'], //Bulgaria
+            ['BG80 B2BG 9661 1020 3456 78'], //Bulgaria
+            ['BY 13 NBRB 3600 900000002Z00AB001'], //Belarus
+            ['BY 13 NBRB 3600 900000002Z00AB0'], //Belarus
+            ['BYRO NBRB 3600 900000002Z00AB0'], //Belarus
+            ['BY 13 3600 NBRB 900000002Z00AB05'], //Belarus
+            ['HR12 1001 0051 8630 0016 01'], //Croatia
+            ['CY17 0020 0128 0000 0012 0052 7600 1'], //Cyprus
+            ['CZ65 0800 0000 1920 0014 5399 1'], //Czech Republic
+            ['DK50 0040 0440 1162 431'], //Denmark
+            ['EE38 2200 2210 2014 5685 1'], //Estonia
+            ['FO97 5432 0388 8999 441'], //Faroe Islands
+            ['FI21 1234 5600 0007 851'], //Finland
+            ['FR14 2004 1010 0505 0001 3M02 6061'], //France
+            ['GE29 NB00 0000 0101 9049 171'], //Georgia
+            ['DE89 3704 0044 0532 0130 001'], //Germany
+            ['GI75 NWBK 0000 0000 7099 4531'], //Gibraltar
+            ['GR16 0110 1250 0000 0001 2300 6951'], //Greece
+            ['GL56 0444 9876 5432 101'], //Greenland
+            ['HU42 1177 3016 1111 1018 0000 0000 1'], //Hungary
+            ['IS14 0159 2600 7654 5510 7303 391'], //Iceland
+            ['IE29 AIBK 9311 5212 3456 781'], //Ireland
+            ['IL62 0108 0000 0009 9999 9991'], //Israel
+            ['IT40 S054 2811 1010 0000 0123 4561'], //Italy
+            ['LV80 BANK 0000 4351 9500 11'], //Latvia
+            ['LB62 0999 0000 0001 0019 0122 9114 1'], //Lebanon
+            ['LI21 0881 0000 2324 013A A1'], //Liechtenstein
+            ['LT12 1000 0111 0100 1000 1'], //Lithuania
+            ['LU28 0019 4006 4475 0000 1'], //Luxembourg
+            ['MK072 5012 0000 0589 84 1'], //Macedonia
+            ['MT84 MALT 0110 0001 2345 MTLC AST0 01SA'], //Malta
+            ['MU17 BOMM 0101 1010 3030 0200 000M URA'], //Mauritius
+            ['MD24 AG00 0225 1000 1310 4168 1'], //Moldova
+            ['MC93 2005 2222 1001 1223 3M44 5551'], //Monaco
+            ['ME25 5050 0001 2345 6789 511'], //Montenegro
+            ['NL39 RABO 0300 0652 641'], //Netherlands
+            ['NO93 8601 1117 9471'], //Norway
+            ['PK36 SCBL 0000 0011 2345 6702 1'], //Pakistan
+            ['PL60 1020 1026 0000 0422 7020 1111 1'], //Poland
+            ['PT50 0002 0123 1234 5678 9015 41'], //Portugal
+            ['RO49 AAAA 1B31 0075 9384 0000 1'], //Romania
+            ['SM86 U032 2509 8000 0000 0270 1001'], //San Marino
+            ['SA03 8000 0000 6080 1016 7519 1'], //Saudi Arabia
+            ['RS35 2600 0560 1001 6113 791'], //Serbia
+            ['SK31 1200 0000 1987 4263 7541 1'], //Slovak Republic
+            ['SI56 1910 0000 0123 4381'], //Slovenia
+            ['ES80 2310 0001 1800 0001 2345 1'], //Spain
+            ['SE35 5000 0000 0549 1000 0003 1'], //Sweden
+            ['CH93 0076 2011 6238 5295 71'], //Switzerland
+            ['TN59 1000 6035 1835 9847 8831 1'], //Tunisia
+            ['TR33 0006 1005 1978 6457 8413 261'], //Turkey
+            ['AE07 0331 2345 6789 0123 4561'], //UAE
+            ['GB12 CPBK 0892 9965 0449 911'], //United Kingdom
 
             //Extended country list
-            array('AO060006000001000371311741'), //Angola
-            array('AZ21NABZ000000001370100019441'), //Azerbaijan
-            array('BH29BMAG1299123456BH001'), //Bahrain
-            array('BJ11B006101004002711011925911'), //Benin
-            array('BR9700360305000010009795493P11'), // Brazil
-            array('BR1800000000141455123924100C21'), // Brazil
-            array('VG96VPVG00000123456789011'), //British Virgin Islands
-            array('BF10301340200154009450006431'), //Burkina Faso
-            array('BI432010110674441'), //Burundi
-            array('CM21100030010005000006053061'), //Cameroon
-            array('CV640003000045470691101761'), //Cape Verde
-            array('FR76300070001100099700049421'), //Central African Republic
-            array('CG52300110002021512345678901'), //Congo
-            array('CR05152020010262840661'), //Costa Rica
-            array('CR0515202001026284066'), //Costa Rica
-            array('DO28BAGR000000012124536113241'), //Dominican Republic
-            array('GT82TRAJ010200000012100296901'), //Guatemala
-            array('IR5805401051800212731130071'), //Iran
-            array('IL6201080000000999999991'), //Israel
-            array('CI05A000601741001785300118521'), //Ivory Coast
-            array('JO94CBJO00100000000001310003021'), // Jordan
-            array('KZ1760102510000429931'), //Kazakhstan
-            array('KW74NBOK00000000000010003721511'), //Kuwait
-            array('LB300999000000010019255791151'), //Lebanon
-            array('MG46000050300101019140160561'), //Madagascar
-            array('ML03D008901700010021200004471'), //Mali
-            array('MR13000120000100000020373721'), //Mauritania
-            array('MU17BOMM0101101030300200000MUR1'), //Mauritius
-            array('MZ590001000000118341941571'), //Mozambique
-            array('PS92PALS0000000004001234567021'), //Palestinian Territory
-            array('QA58DOHB00001234567890ABCDEFG1'), //Qatar
-            array('XK0512120123456789061'), //Republic of Kosovo
-            array('PT500002000001630993103551'), //Sao Tome and Principe
-            array('SA03800000006080101675191'), //Saudi Arabia
-            array('SN12K001001520000256900075421'), //Senegal
-            array('TL3800800123456789101571'), //Timor-Leste
-            array('TN59142072071007071296481'), //Tunisia
-            array('TR3300061005197864578413261'), //Turkey
-            array('UA21AAAA1300000260072335660012'), //Ukraine
-            array('AE2602110000002300640161'), //United Arab Emirates
-            array('VA590011230000123456781'), //Vatican City State
-        );
+            ['AO060006000001000371311741'], //Angola
+            ['AZ21NABZ000000001370100019441'], //Azerbaijan
+            ['BH29BMAG1299123456BH001'], //Bahrain
+            ['BJ11B006101004002711011925911'], //Benin
+            ['BR9700360305000010009795493P11'], // Brazil
+            ['BR1800000000141455123924100C21'], // Brazil
+            ['VG96VPVG00000123456789011'], //British Virgin Islands
+            ['BF10301340200154009450006431'], //Burkina Faso
+            ['BI432010110674441'], //Burundi
+            ['CM21100030010005000006053061'], //Cameroon
+            ['CV640003000045470691101761'], //Cape Verde
+            ['FR76300070001100099700049421'], //Central African Republic
+            ['CG52300110002021512345678901'], //Congo
+            ['CR05152020010262840661'], //Costa Rica
+            ['CR0515202001026284066'], //Costa Rica
+            ['DO28BAGR000000012124536113241'], //Dominican Republic
+            ['GT82TRAJ010200000012100296901'], //Guatemala
+            ['IR5805401051800212731130071'], //Iran
+            ['IL6201080000000999999991'], //Israel
+            ['CI05A000601741001785300118521'], //Ivory Coast
+            ['JO94CBJO00100000000001310003021'], // Jordan
+            ['KZ1760102510000429931'], //Kazakhstan
+            ['KW74NBOK00000000000010003721511'], //Kuwait
+            ['LB300999000000010019255791151'], //Lebanon
+            ['MG46000050300101019140160561'], //Madagascar
+            ['ML03D008901700010021200004471'], //Mali
+            ['MR13000120000100000020373721'], //Mauritania
+            ['MU17BOMM0101101030300200000MUR1'], //Mauritius
+            ['MZ590001000000118341941571'], //Mozambique
+            ['PS92PALS0000000004001234567021'], //Palestinian Territory
+            ['QA58DOHB00001234567890ABCDEFG1'], //Qatar
+            ['XK0512120123456789061'], //Republic of Kosovo
+            ['PT500002000001630993103551'], //Sao Tome and Principe
+            ['SA03800000006080101675191'], //Saudi Arabia
+            ['SN12K001001520000256900075421'], //Senegal
+            ['TL3800800123456789101571'], //Timor-Leste
+            ['TN59142072071007071296481'], //Tunisia
+            ['TR3300061005197864578413261'], //Turkey
+            ['UA21AAAA1300000260072335660012'], //Ukraine
+            ['AE2602110000002300640161'], //United Arab Emirates
+            ['VA590011230000123456781'], //Vatican City State
+        ];
     }
 
     /**
@@ -289,106 +289,106 @@ public function testIbansWithValidFormatButIncorrectChecksum($iban)
 
     public function getIbansWithValidFormatButIncorrectChecksum()
     {
-        return array(
-            array('AL47 2121 1009 0000 0002 3569 8742'), //Albania
-            array('AD12 0001 2030 2003 5910 0101'), //Andorra
-            array('AT61 1904 3002 3457 3202'), //Austria
-            array('AZ21 NABZ 0000 0000 1370 1000 1945'), //Azerbaijan
-            array('BH67 BMAG 0000 1299 1234 57'), //Bahrain
-            array('BE62 5100 0754 7062'), //Belgium
-            array('BA39 1290 0794 0102 8495'), //Bosnia and Herzegovina
-            array('BG80 BNBG 9661 1020 3456 79'), //Bulgaria
-            array('BY90 NBRB 3600 900000002Z00AB00'), //Belarus
-            array('HR12 1001 0051 8630 0016 1'), //Croatia
-            array('CY17 0020 0128 0000 0012 0052 7601'), //Cyprus
-            array('CZ65 0800 0000 1920 0014 5398'), //Czech Republic
-            array('DK50 0040 0440 1162 44'), //Denmark
-            array('EE38 2200 2210 2014 5684'), //Estonia
-            array('FO97 5432 0388 8999 43'), //Faroe Islands
-            array('FI21 1234 5600 0007 84'), //Finland
-            array('FR14 2004 1010 0505 0001 3M02 605'), //France
-            array('GE29 NB00 0000 0101 9049 16'), //Georgia
-            array('DE89 3704 0044 0532 0130 01'), //Germany
-            array('GI75 NWBK 0000 0000 7099 452'), //Gibraltar
-            array('GR16 0110 1250 0000 0001 2300 694'), //Greece
-            array('GL56 0444 9876 5432 11'), //Greenland
-            array('HU42 1177 3016 1111 1018 0000 0001'), //Hungary
-            array('IS14 0159 2600 7654 5510 7303 38'), //Iceland
-            array('IE29 AIBK 9311 5212 3456 79'), //Ireland
-            array('IL62 0108 0000 0009 9999 998'), //Israel
-            array('IT40 S054 2811 1010 0000 0123 457'), //Italy
-            array('LV80 BANK 0000 4351 9500 2'), //Latvia
-            array('LB62 0999 0000 0001 0019 0122 9115'), //Lebanon
-            array('LI21 0881 0000 2324 013A B'), //Liechtenstein
-            array('LT12 1000 0111 0100 1001'), //Lithuania
-            array('LU28 0019 4006 4475 0001'), //Luxembourg
-            array('MK072 5012 0000 0589 85'), //Macedonia
-            array('MT84 MALT 0110 0001 2345 MTLC AST0 01T'), //Malta
-            array('MU17 BOMM 0101 1010 3030 0200 000M UP'), //Mauritius
-            array('MD24 AG00 0225 1000 1310 4169'), //Moldova
-            array('MC93 2005 2222 1001 1223 3M44 554'), //Monaco
-            array('ME25 5050 0001 2345 6789 52'), //Montenegro
-            array('NL39 RABO 0300 0652 65'), //Netherlands
-            array('NO93 8601 1117 948'), //Norway
-            array('PK36 SCBL 0000 0011 2345 6703'), //Pakistan
-            array('PL60 1020 1026 0000 0422 7020 1112'), //Poland
-            array('PT50 0002 0123 1234 5678 9015 5'), //Portugal
-            array('RO49 AAAA 1B31 0075 9384 0001'), //Romania
-            array('SM86 U032 2509 8000 0000 0270 101'), //San Marino
-            array('SA03 8000 0000 6080 1016 7518'), //Saudi Arabia
-            array('RS35 2600 0560 1001 6113 78'), //Serbia
-            array('SK31 1200 0000 1987 4263 7542'), //Slovak Republic
-            array('SI56 1910 0000 0123 439'), //Slovenia
-            array('ES80 2310 0001 1800 0001 2346'), //Spain
-            array('SE35 5000 0000 0549 1000 0004'), //Sweden
-            array('CH93 0076 2011 6238 5295 8'), //Switzerland
-            array('TN59 1000 6035 1835 9847 8832'), //Tunisia
-            array('TR33 0006 1005 1978 6457 8413 27'), //Turkey
-            array('AE07 0331 2345 6789 0123 457'), //UAE
-            array('GB12 CPBK 0892 9965 0449 92'), //United Kingdom
+        return [
+            ['AL47 2121 1009 0000 0002 3569 8742'], //Albania
+            ['AD12 0001 2030 2003 5910 0101'], //Andorra
+            ['AT61 1904 3002 3457 3202'], //Austria
+            ['AZ21 NABZ 0000 0000 1370 1000 1945'], //Azerbaijan
+            ['BH67 BMAG 0000 1299 1234 57'], //Bahrain
+            ['BE62 5100 0754 7062'], //Belgium
+            ['BA39 1290 0794 0102 8495'], //Bosnia and Herzegovina
+            ['BG80 BNBG 9661 1020 3456 79'], //Bulgaria
+            ['BY90 NBRB 3600 900000002Z00AB00'], //Belarus
+            ['HR12 1001 0051 8630 0016 1'], //Croatia
+            ['CY17 0020 0128 0000 0012 0052 7601'], //Cyprus
+            ['CZ65 0800 0000 1920 0014 5398'], //Czech Republic
+            ['DK50 0040 0440 1162 44'], //Denmark
+            ['EE38 2200 2210 2014 5684'], //Estonia
+            ['FO97 5432 0388 8999 43'], //Faroe Islands
+            ['FI21 1234 5600 0007 84'], //Finland
+            ['FR14 2004 1010 0505 0001 3M02 605'], //France
+            ['GE29 NB00 0000 0101 9049 16'], //Georgia
+            ['DE89 3704 0044 0532 0130 01'], //Germany
+            ['GI75 NWBK 0000 0000 7099 452'], //Gibraltar
+            ['GR16 0110 1250 0000 0001 2300 694'], //Greece
+            ['GL56 0444 9876 5432 11'], //Greenland
+            ['HU42 1177 3016 1111 1018 0000 0001'], //Hungary
+            ['IS14 0159 2600 7654 5510 7303 38'], //Iceland
+            ['IE29 AIBK 9311 5212 3456 79'], //Ireland
+            ['IL62 0108 0000 0009 9999 998'], //Israel
+            ['IT40 S054 2811 1010 0000 0123 457'], //Italy
+            ['LV80 BANK 0000 4351 9500 2'], //Latvia
+            ['LB62 0999 0000 0001 0019 0122 9115'], //Lebanon
+            ['LI21 0881 0000 2324 013A B'], //Liechtenstein
+            ['LT12 1000 0111 0100 1001'], //Lithuania
+            ['LU28 0019 4006 4475 0001'], //Luxembourg
+            ['MK072 5012 0000 0589 85'], //Macedonia
+            ['MT84 MALT 0110 0001 2345 MTLC AST0 01T'], //Malta
+            ['MU17 BOMM 0101 1010 3030 0200 000M UP'], //Mauritius
+            ['MD24 AG00 0225 1000 1310 4169'], //Moldova
+            ['MC93 2005 2222 1001 1223 3M44 554'], //Monaco
+            ['ME25 5050 0001 2345 6789 52'], //Montenegro
+            ['NL39 RABO 0300 0652 65'], //Netherlands
+            ['NO93 8601 1117 948'], //Norway
+            ['PK36 SCBL 0000 0011 2345 6703'], //Pakistan
+            ['PL60 1020 1026 0000 0422 7020 1112'], //Poland
+            ['PT50 0002 0123 1234 5678 9015 5'], //Portugal
+            ['RO49 AAAA 1B31 0075 9384 0001'], //Romania
+            ['SM86 U032 2509 8000 0000 0270 101'], //San Marino
+            ['SA03 8000 0000 6080 1016 7518'], //Saudi Arabia
+            ['RS35 2600 0560 1001 6113 78'], //Serbia
+            ['SK31 1200 0000 1987 4263 7542'], //Slovak Republic
+            ['SI56 1910 0000 0123 439'], //Slovenia
+            ['ES80 2310 0001 1800 0001 2346'], //Spain
+            ['SE35 5000 0000 0549 1000 0004'], //Sweden
+            ['CH93 0076 2011 6238 5295 8'], //Switzerland
+            ['TN59 1000 6035 1835 9847 8832'], //Tunisia
+            ['TR33 0006 1005 1978 6457 8413 27'], //Turkey
+            ['AE07 0331 2345 6789 0123 457'], //UAE
+            ['GB12 CPBK 0892 9965 0449 92'], //United Kingdom
 
             //Extended country list
-            array('AO06000600000100037131175'), //Angola
-            array('AZ21NABZ00000000137010001945'), //Azerbaijan
-            array('BH29BMAG1299123456BH01'), //Bahrain
-            array('BJ11B00610100400271101192592'), //Benin
-            array('BR9700360305000010009795493P2'), // Brazil
-            array('BR1800000000141455123924100C3'), // Brazil
-            array('VG96VPVG0000012345678902'), //British Virgin Islands
-            array('BF1030134020015400945000644'), //Burkina Faso
-            array('BI43201011067445'), //Burundi
-            array('CM2110003001000500000605307'), //Cameroon
-            array('CV64000300004547069110177'), //Cape Verde
-            array('FR7630007000110009970004943'), //Central African Republic
-            array('CG5230011000202151234567891'), //Congo
-            array('CR96042332432534543564'), //Costa Rica
-            array('DO28BAGR00000001212453611325'), //Dominican Republic
-            array('GT82TRAJ01020000001210029691'), //Guatemala
-            array('IR580540105180021273113008'), //Iran
-            array('IL620108000000099999998'), //Israel
-            array('CI05A00060174100178530011853'), //Ivory Coast
-            array('JO94CBJO0010000000000131000303'), // Jordan
-            array('KZ176010251000042994'), //Kazakhstan
-            array('KW74NBOK0000000000001000372152'), //Kuwait
-            array('LB30099900000001001925579116'), //Lebanon
-            array('MG4600005030010101914016057'), //Madagascar
-            array('ML03D00890170001002120000448'), //Mali
-            array('MR1300012000010000002037373'), //Mauritania
-            array('MU17BOMM0101101030300200000MUP'), //Mauritius
-            array('MZ59000100000011834194158'), //Mozambique
-            array('PS92PALS000000000400123456703'), //Palestinian Territory
-            array('QA58DOHB00001234567890ABCDEFH'), //Qatar
-            array('XK051212012345678907'), //Republic of Kosovo
-            array('PT50000200000163099310356'), //Sao Tome and Principe
-            array('SA0380000000608010167518'), //Saudi Arabia
-            array('SN12K00100152000025690007543'), //Senegal
-            array('TL380080012345678910158'), //Timor-Leste
-            array('TN5914207207100707129649'), //Tunisia
-            array('TR330006100519786457841327'), //Turkey
-            array('UA213223130000026007233566002'), //Ukraine
-            array('AE260211000000230064017'), //United Arab Emirates
-            array('VA59001123000012345671'), //Vatican City State
-        );
+            ['AO06000600000100037131175'], //Angola
+            ['AZ21NABZ00000000137010001945'], //Azerbaijan
+            ['BH29BMAG1299123456BH01'], //Bahrain
+            ['BJ11B00610100400271101192592'], //Benin
+            ['BR9700360305000010009795493P2'], // Brazil
+            ['BR1800000000141455123924100C3'], // Brazil
+            ['VG96VPVG0000012345678902'], //British Virgin Islands
+            ['BF1030134020015400945000644'], //Burkina Faso
+            ['BI43201011067445'], //Burundi
+            ['CM2110003001000500000605307'], //Cameroon
+            ['CV64000300004547069110177'], //Cape Verde
+            ['FR7630007000110009970004943'], //Central African Republic
+            ['CG5230011000202151234567891'], //Congo
+            ['CR96042332432534543564'], //Costa Rica
+            ['DO28BAGR00000001212453611325'], //Dominican Republic
+            ['GT82TRAJ01020000001210029691'], //Guatemala
+            ['IR580540105180021273113008'], //Iran
+            ['IL620108000000099999998'], //Israel
+            ['CI05A00060174100178530011853'], //Ivory Coast
+            ['JO94CBJO0010000000000131000303'], // Jordan
+            ['KZ176010251000042994'], //Kazakhstan
+            ['KW74NBOK0000000000001000372152'], //Kuwait
+            ['LB30099900000001001925579116'], //Lebanon
+            ['MG4600005030010101914016057'], //Madagascar
+            ['ML03D00890170001002120000448'], //Mali
+            ['MR1300012000010000002037373'], //Mauritania
+            ['MU17BOMM0101101030300200000MUP'], //Mauritius
+            ['MZ59000100000011834194158'], //Mozambique
+            ['PS92PALS000000000400123456703'], //Palestinian Territory
+            ['QA58DOHB00001234567890ABCDEFH'], //Qatar
+            ['XK051212012345678907'], //Republic of Kosovo
+            ['PT50000200000163099310356'], //Sao Tome and Principe
+            ['SA0380000000608010167518'], //Saudi Arabia
+            ['SN12K00100152000025690007543'], //Senegal
+            ['TL380080012345678910158'], //Timor-Leste
+            ['TN5914207207100707129649'], //Tunisia
+            ['TR330006100519786457841327'], //Turkey
+            ['UA213223130000026007233566002'], //Ukraine
+            ['AE260211000000230064017'], //United Arab Emirates
+            ['VA59001123000012345671'], //Vatican City State
+        ];
     }
 
     /**
@@ -401,13 +401,13 @@ public function testIbansWithUnsupportedCountryCode($countryCode)
 
     public function getUnsupportedCountryCodes()
     {
-        return array(
-            array('AG'),
-            array('AI'),
-            array('AQ'),
-            array('AS'),
-            array('AW'),
-        );
+        return [
+            ['AG'],
+            ['AI'],
+            ['AQ'],
+            ['AS'],
+            ['AW'],
+        ];
     }
 
     public function testIbansWithInvalidCharacters()
@@ -425,18 +425,18 @@ public function testIbansWithInvalidCountryCode($iban)
 
     public function getIbansWithInvalidCountryCode()
     {
-        return array(
-            array('0750447346'),
-            array('2X0750447346'),
-            array('A20750447346'),
-        );
+        return [
+            ['0750447346'],
+            ['2X0750447346'],
+            ['A20750447346'],
+        ];
     }
 
     private function assertViolationRaised($iban, $code)
     {
-        $constraint = new Iban(array(
+        $constraint = new Iban([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($iban, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php
index 360eccabc702..c96ac16a9193 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php
@@ -55,16 +55,16 @@ public function provideValidComparisons()
         $date = new \DateTime('2000-01-01');
         $object = new ComparisonTest_Class(2);
 
-        $comparisons = array(
-            array(3, 3),
-            array('a', 'a'),
-            array($date, $date),
-            array($object, $object),
-            array(null, 1),
-        );
+        $comparisons = [
+            [3, 3],
+            ['a', 'a'],
+            [$date, $date],
+            [$object, $object],
+            [null, 1],
+        ];
 
         $immutableDate = new \DateTimeImmutable('2000-01-01');
-        $comparisons[] = array($immutableDate, $immutableDate);
+        $comparisons[] = [$immutableDate, $immutableDate];
 
         return $comparisons;
     }
@@ -74,9 +74,9 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(5),
-        );
+        return [
+            [5],
+        ];
     }
 
     /**
@@ -84,13 +84,13 @@ public function provideValidComparisonsToPropertyPath()
      */
     public function provideInvalidComparisons()
     {
-        return array(
-            array(1, '1', 2, '2', 'integer'),
-            array(2, '2', '2', '"2"', 'string'),
-            array('22', '"22"', '333', '"333"', 'string'),
-            array(new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('1999-01-01'), 'Jan 1, 1999, 12:00 AM', 'DateTime'),
-            array(new ComparisonTest_Class(4), '4', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'),
-        );
+        return [
+            [1, '1', 2, '2', 'integer'],
+            [2, '2', '2', '"2"', 'string'],
+            ['22', '"22"', '333', '"333"', 'string'],
+            [new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', 'DateTime'],
+            [new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('1999-01-01'), 'Jan 1, 1999, 12:00 AM', 'DateTime'],
+            [new ComparisonTest_Class(4), '4', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ImageValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ImageValidatorTest.php
index 9d80f88d89df..aa8ad4cf55dc 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ImageValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ImageValidatorTest.php
@@ -74,9 +74,9 @@ public function testValidImage()
     public function testFileNotFound()
     {
         // Check that the logic from FileValidator still works
-        $constraint = new Image(array(
+        $constraint = new Image([
             'notFoundMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('foobar', $constraint);
 
@@ -88,12 +88,12 @@ public function testFileNotFound()
 
     public function testValidSize()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minWidth' => 1,
             'maxWidth' => 2,
             'minHeight' => 1,
             'maxHeight' => 2,
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -102,10 +102,10 @@ public function testValidSize()
 
     public function testWidthTooSmall()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minWidth' => 3,
             'minWidthMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -118,10 +118,10 @@ public function testWidthTooSmall()
 
     public function testWidthTooBig()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxWidth' => 1,
             'maxWidthMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -134,10 +134,10 @@ public function testWidthTooBig()
 
     public function testHeightTooSmall()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minHeight' => 3,
             'minHeightMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -150,10 +150,10 @@ public function testHeightTooSmall()
 
     public function testHeightTooBig()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxHeight' => 1,
             'maxHeightMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -166,10 +166,10 @@ public function testHeightTooBig()
 
     public function testPixelsTooFew()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minPixels' => 5,
             'minPixelsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -184,10 +184,10 @@ public function testPixelsTooFew()
 
     public function testPixelsTooMany()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxPixels' => 3,
             'maxPixelsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -205,9 +205,9 @@ public function testPixelsTooMany()
      */
     public function testInvalidMinWidth()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minWidth' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
     }
@@ -217,9 +217,9 @@ public function testInvalidMinWidth()
      */
     public function testInvalidMaxWidth()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxWidth' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
     }
@@ -229,9 +229,9 @@ public function testInvalidMaxWidth()
      */
     public function testInvalidMinHeight()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minHeight' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
     }
@@ -241,9 +241,9 @@ public function testInvalidMinHeight()
      */
     public function testInvalidMaxHeight()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxHeight' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
     }
@@ -253,9 +253,9 @@ public function testInvalidMaxHeight()
      */
     public function testInvalidMinPixels()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minPixels' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
     }
@@ -265,19 +265,19 @@ public function testInvalidMinPixels()
      */
     public function testInvalidMaxPixels()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxPixels' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
     }
 
     public function testRatioTooSmall()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minRatio' => 2,
             'minRatioMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -290,10 +290,10 @@ public function testRatioTooSmall()
 
     public function testRatioTooBig()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxRatio' => 0.5,
             'maxRatioMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -306,9 +306,9 @@ public function testRatioTooBig()
 
     public function testMaxRatioUsesTwoDecimalsOnly()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxRatio' => 1.33,
-        ));
+        ]);
 
         $this->validator->validate($this->image4By3, $constraint);
 
@@ -320,9 +320,9 @@ public function testMaxRatioUsesTwoDecimalsOnly()
      */
     public function testInvalidMinRatio()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'minRatio' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
     }
@@ -332,19 +332,19 @@ public function testInvalidMinRatio()
      */
     public function testInvalidMaxRatio()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'maxRatio' => '1abc',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
     }
 
     public function testSquareNotAllowed()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'allowSquare' => false,
             'allowSquareMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
@@ -357,10 +357,10 @@ public function testSquareNotAllowed()
 
     public function testLandscapeNotAllowed()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'allowLandscape' => false,
             'allowLandscapeMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->imageLandscape, $constraint);
 
@@ -373,10 +373,10 @@ public function testLandscapeNotAllowed()
 
     public function testPortraitNotAllowed()
     {
-        $constraint = new Image(array(
+        $constraint = new Image([
             'allowPortrait' => false,
             'allowPortraitMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->imagePortrait, $constraint);
 
@@ -393,10 +393,10 @@ public function testCorrupted()
             $this->markTestSkipped('This test require GD extension');
         }
 
-        $constraint = new Image(array(
+        $constraint = new Image([
             'detectCorrupted' => true,
             'corruptedMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($this->image, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IpValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IpValidatorTest.php
index 985bd9577d2d..1ee44e7c518d 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IpValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IpValidatorTest.php
@@ -49,9 +49,9 @@ public function testExpectsStringCompatibleType()
      */
     public function testInvalidValidatorVersion()
     {
-        new Ip(array(
+        new Ip([
             'version' => 666,
-        ));
+        ]);
     }
 
     /**
@@ -59,25 +59,25 @@ public function testInvalidValidatorVersion()
      */
     public function testValidIpsV4($ip)
     {
-        $this->validator->validate($ip, new Ip(array(
+        $this->validator->validate($ip, new Ip([
             'version' => Ip::V4,
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function getValidIpsV4()
     {
-        return array(
-            array('0.0.0.0'),
-            array('10.0.0.0'),
-            array('123.45.67.178'),
-            array('172.16.0.0'),
-            array('192.168.1.0'),
-            array('224.0.0.1'),
-            array('255.255.255.255'),
-            array('127.0.0.0'),
-        );
+        return [
+            ['0.0.0.0'],
+            ['10.0.0.0'],
+            ['123.45.67.178'],
+            ['172.16.0.0'],
+            ['192.168.1.0'],
+            ['224.0.0.1'],
+            ['255.255.255.255'],
+            ['127.0.0.0'],
+        ];
     }
 
     /**
@@ -85,36 +85,36 @@ public function getValidIpsV4()
      */
     public function testValidIpsV6($ip)
     {
-        $this->validator->validate($ip, new Ip(array(
+        $this->validator->validate($ip, new Ip([
             'version' => Ip::V6,
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
 
     public function getValidIpsV6()
     {
-        return array(
-            array('2001:0db8:85a3:0000:0000:8a2e:0370:7334'),
-            array('2001:0DB8:85A3:0000:0000:8A2E:0370:7334'),
-            array('2001:0Db8:85a3:0000:0000:8A2e:0370:7334'),
-            array('fdfe:dcba:9876:ffff:fdc6:c46b:bb8f:7d4c'),
-            array('fdc6:c46b:bb8f:7d4c:fdc6:c46b:bb8f:7d4c'),
-            array('fdc6:c46b:bb8f:7d4c:0000:8a2e:0370:7334'),
-            array('fe80:0000:0000:0000:0202:b3ff:fe1e:8329'),
-            array('fe80:0:0:0:202:b3ff:fe1e:8329'),
-            array('fe80::202:b3ff:fe1e:8329'),
-            array('0:0:0:0:0:0:0:0'),
-            array('::'),
-            array('0::'),
-            array('::0'),
-            array('0::0'),
+        return [
+            ['2001:0db8:85a3:0000:0000:8a2e:0370:7334'],
+            ['2001:0DB8:85A3:0000:0000:8A2E:0370:7334'],
+            ['2001:0Db8:85a3:0000:0000:8A2e:0370:7334'],
+            ['fdfe:dcba:9876:ffff:fdc6:c46b:bb8f:7d4c'],
+            ['fdc6:c46b:bb8f:7d4c:fdc6:c46b:bb8f:7d4c'],
+            ['fdc6:c46b:bb8f:7d4c:0000:8a2e:0370:7334'],
+            ['fe80:0000:0000:0000:0202:b3ff:fe1e:8329'],
+            ['fe80:0:0:0:202:b3ff:fe1e:8329'],
+            ['fe80::202:b3ff:fe1e:8329'],
+            ['0:0:0:0:0:0:0:0'],
+            ['::'],
+            ['0::'],
+            ['::0'],
+            ['0::0'],
             // IPv4 mapped to IPv6
-            array('2001:0db8:85a3:0000:0000:8a2e:0.0.0.0'),
-            array('::0.0.0.0'),
-            array('::255.255.255.255'),
-            array('::123.45.67.178'),
-        );
+            ['2001:0db8:85a3:0000:0000:8a2e:0.0.0.0'],
+            ['::0.0.0.0'],
+            ['::255.255.255.255'],
+            ['::123.45.67.178'],
+        ];
     }
 
     /**
@@ -122,9 +122,9 @@ public function getValidIpsV6()
      */
     public function testValidIpsAll($ip)
     {
-        $this->validator->validate($ip, new Ip(array(
+        $this->validator->validate($ip, new Ip([
             'version' => Ip::ALL,
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
@@ -139,10 +139,10 @@ public function getValidIpsAll()
      */
     public function testInvalidIpsV4($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::V4,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -154,17 +154,17 @@ public function testInvalidIpsV4($ip)
 
     public function getInvalidIpsV4()
     {
-        return array(
-            array('0'),
-            array('0.0'),
-            array('0.0.0'),
-            array('256.0.0.0'),
-            array('0.256.0.0'),
-            array('0.0.256.0'),
-            array('0.0.0.256'),
-            array('-1.0.0.0'),
-            array('foobar'),
-        );
+        return [
+            ['0'],
+            ['0.0'],
+            ['0.0.0'],
+            ['256.0.0.0'],
+            ['0.256.0.0'],
+            ['0.0.256.0'],
+            ['0.0.0.256'],
+            ['-1.0.0.0'],
+            ['foobar'],
+        ];
     }
 
     /**
@@ -172,10 +172,10 @@ public function getInvalidIpsV4()
      */
     public function testInvalidPrivateIpsV4($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::V4_NO_PRIV,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -187,11 +187,11 @@ public function testInvalidPrivateIpsV4($ip)
 
     public function getInvalidPrivateIpsV4()
     {
-        return array(
-            array('10.0.0.0'),
-            array('172.16.0.0'),
-            array('192.168.1.0'),
-        );
+        return [
+            ['10.0.0.0'],
+            ['172.16.0.0'],
+            ['192.168.1.0'],
+        ];
     }
 
     /**
@@ -199,10 +199,10 @@ public function getInvalidPrivateIpsV4()
      */
     public function testInvalidReservedIpsV4($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::V4_NO_RES,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -214,11 +214,11 @@ public function testInvalidReservedIpsV4($ip)
 
     public function getInvalidReservedIpsV4()
     {
-        return array(
-            array('0.0.0.0'),
-            array('240.0.0.1'),
-            array('255.255.255.255'),
-        );
+        return [
+            ['0.0.0.0'],
+            ['240.0.0.1'],
+            ['255.255.255.255'],
+        ];
     }
 
     /**
@@ -226,10 +226,10 @@ public function getInvalidReservedIpsV4()
      */
     public function testInvalidPublicIpsV4($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::V4_ONLY_PUBLIC,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -249,10 +249,10 @@ public function getInvalidPublicIpsV4()
      */
     public function testInvalidIpsV6($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::V6,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -264,21 +264,21 @@ public function testInvalidIpsV6($ip)
 
     public function getInvalidIpsV6()
     {
-        return array(
-            array('z001:0db8:85a3:0000:0000:8a2e:0370:7334'),
-            array('fe80'),
-            array('fe80:8329'),
-            array('fe80:::202:b3ff:fe1e:8329'),
-            array('fe80::202:b3ff::fe1e:8329'),
+        return [
+            ['z001:0db8:85a3:0000:0000:8a2e:0370:7334'],
+            ['fe80'],
+            ['fe80:8329'],
+            ['fe80:::202:b3ff:fe1e:8329'],
+            ['fe80::202:b3ff::fe1e:8329'],
             // IPv4 mapped to IPv6
-            array('2001:0db8:85a3:0000:0000:8a2e:0370:0.0.0.0'),
-            array('::0.0'),
-            array('::0.0.0'),
-            array('::256.0.0.0'),
-            array('::0.256.0.0'),
-            array('::0.0.256.0'),
-            array('::0.0.0.256'),
-        );
+            ['2001:0db8:85a3:0000:0000:8a2e:0370:0.0.0.0'],
+            ['::0.0'],
+            ['::0.0.0'],
+            ['::256.0.0.0'],
+            ['::0.256.0.0'],
+            ['::0.0.256.0'],
+            ['::0.0.0.256'],
+        ];
     }
 
     /**
@@ -286,10 +286,10 @@ public function getInvalidIpsV6()
      */
     public function testInvalidPrivateIpsV6($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::V6_NO_PRIV,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -301,11 +301,11 @@ public function testInvalidPrivateIpsV6($ip)
 
     public function getInvalidPrivateIpsV6()
     {
-        return array(
-            array('fdfe:dcba:9876:ffff:fdc6:c46b:bb8f:7d4c'),
-            array('fdc6:c46b:bb8f:7d4c:fdc6:c46b:bb8f:7d4c'),
-            array('fdc6:c46b:bb8f:7d4c:0000:8a2e:0370:7334'),
-        );
+        return [
+            ['fdfe:dcba:9876:ffff:fdc6:c46b:bb8f:7d4c'],
+            ['fdc6:c46b:bb8f:7d4c:fdc6:c46b:bb8f:7d4c'],
+            ['fdc6:c46b:bb8f:7d4c:0000:8a2e:0370:7334'],
+        ];
     }
 
     /**
@@ -313,10 +313,10 @@ public function getInvalidPrivateIpsV6()
      */
     public function testInvalidReservedIpsV6($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::V6_NO_RES,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -339,10 +339,10 @@ public function getInvalidReservedIpsV6()
      */
     public function testInvalidPublicIpsV6($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::V6_ONLY_PUBLIC,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -362,10 +362,10 @@ public function getInvalidPublicIpsV6()
      */
     public function testInvalidIpsAll($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::ALL,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -385,10 +385,10 @@ public function getInvalidIpsAll()
      */
     public function testInvalidPrivateIpsAll($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::ALL_NO_PRIV,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -408,10 +408,10 @@ public function getInvalidPrivateIpsAll()
      */
     public function testInvalidReservedIpsAll($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::ALL_NO_RES,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
@@ -431,10 +431,10 @@ public function getInvalidReservedIpsAll()
      */
     public function testInvalidPublicIpsAll($ip)
     {
-        $constraint = new Ip(array(
+        $constraint = new Ip([
             'version' => Ip::ALL_ONLY_PUBLIC,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($ip, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IsFalseValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IsFalseValidatorTest.php
index ab139a93fd7d..65aecf94be59 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IsFalseValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IsFalseValidatorTest.php
@@ -38,9 +38,9 @@ public function testFalseIsValid()
 
     public function testTrueIsInvalid()
     {
-        $constraint = new IsFalse(array(
+        $constraint = new IsFalse([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate(true, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IsNullValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IsNullValidatorTest.php
index 2cc289b85739..60f9e95f473a 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IsNullValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IsNullValidatorTest.php
@@ -34,9 +34,9 @@ public function testNullIsValid()
      */
     public function testInvalidValues($value, $valueAsString)
     {
-        $constraint = new IsNull(array(
+        $constraint = new IsNull([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -48,15 +48,15 @@ public function testInvalidValues($value, $valueAsString)
 
     public function getInvalidValues()
     {
-        return array(
-            array(0, '0'),
-            array(false, 'false'),
-            array(true, 'true'),
-            array('', '""'),
-            array('foo bar', '"foo bar"'),
-            array(new \DateTime(), 'object'),
-            array(new \stdClass(), 'object'),
-            array(array(), 'array'),
-        );
+        return [
+            [0, '0'],
+            [false, 'false'],
+            [true, 'true'],
+            ['', '""'],
+            ['foo bar', '"foo bar"'],
+            [new \DateTime(), 'object'],
+            [new \stdClass(), 'object'],
+            [[], 'array'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IsTrueValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IsTrueValidatorTest.php
index 821d54da29e5..e3e0c52b93a6 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IsTrueValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IsTrueValidatorTest.php
@@ -38,9 +38,9 @@ public function testTrueIsValid()
 
     public function testFalseIsInvalid()
     {
-        $constraint = new IsTrue(array(
+        $constraint = new IsTrue([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate(false, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IsbnValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IsbnValidatorTest.php
index f810fc9820ae..3c17fd403ad0 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IsbnValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IsbnValidatorTest.php
@@ -27,79 +27,79 @@ protected function createValidator()
 
     public function getValidIsbn10()
     {
-        return array(
-            array('2723442284'),
-            array('2723442276'),
-            array('2723455041'),
-            array('2070546810'),
-            array('2711858839'),
-            array('2756406767'),
-            array('2870971648'),
-            array('226623854X'),
-            array('2851806424'),
-            array('0321812700'),
-            array('0-45122-5244'),
-            array('0-4712-92311'),
-            array('0-9752298-0-X'),
-        );
+        return [
+            ['2723442284'],
+            ['2723442276'],
+            ['2723455041'],
+            ['2070546810'],
+            ['2711858839'],
+            ['2756406767'],
+            ['2870971648'],
+            ['226623854X'],
+            ['2851806424'],
+            ['0321812700'],
+            ['0-45122-5244'],
+            ['0-4712-92311'],
+            ['0-9752298-0-X'],
+        ];
     }
 
     public function getInvalidIsbn10()
     {
-        return array(
-            array('27234422841', Isbn::TOO_LONG_ERROR),
-            array('272344228', Isbn::TOO_SHORT_ERROR),
-            array('0-4712-9231', Isbn::TOO_SHORT_ERROR),
-            array('1234567890', Isbn::CHECKSUM_FAILED_ERROR),
-            array('0987656789', Isbn::CHECKSUM_FAILED_ERROR),
-            array('7-35622-5444', Isbn::CHECKSUM_FAILED_ERROR),
-            array('0-4X19-92611', Isbn::CHECKSUM_FAILED_ERROR),
-            array('0_45122_5244', Isbn::INVALID_CHARACTERS_ERROR),
-            array('2870#971#648', Isbn::INVALID_CHARACTERS_ERROR),
-            array('0-9752298-0-x', Isbn::INVALID_CHARACTERS_ERROR),
-            array('1A34567890', Isbn::INVALID_CHARACTERS_ERROR),
+        return [
+            ['27234422841', Isbn::TOO_LONG_ERROR],
+            ['272344228', Isbn::TOO_SHORT_ERROR],
+            ['0-4712-9231', Isbn::TOO_SHORT_ERROR],
+            ['1234567890', Isbn::CHECKSUM_FAILED_ERROR],
+            ['0987656789', Isbn::CHECKSUM_FAILED_ERROR],
+            ['7-35622-5444', Isbn::CHECKSUM_FAILED_ERROR],
+            ['0-4X19-92611', Isbn::CHECKSUM_FAILED_ERROR],
+            ['0_45122_5244', Isbn::INVALID_CHARACTERS_ERROR],
+            ['2870#971#648', Isbn::INVALID_CHARACTERS_ERROR],
+            ['0-9752298-0-x', Isbn::INVALID_CHARACTERS_ERROR],
+            ['1A34567890', Isbn::INVALID_CHARACTERS_ERROR],
             // chr(1) evaluates to 0
             // 2070546810 is valid
-            array('2'.\chr(1).'70546810', Isbn::INVALID_CHARACTERS_ERROR),
-        );
+            ['2'.\chr(1).'70546810', Isbn::INVALID_CHARACTERS_ERROR],
+        ];
     }
 
     public function getValidIsbn13()
     {
-        return array(
-            array('978-2723442282'),
-            array('978-2723442275'),
-            array('978-2723455046'),
-            array('978-2070546817'),
-            array('978-2711858835'),
-            array('978-2756406763'),
-            array('978-2870971642'),
-            array('978-2266238540'),
-            array('978-2851806420'),
-            array('978-0321812704'),
-            array('978-0451225245'),
-            array('978-0471292319'),
-        );
+        return [
+            ['978-2723442282'],
+            ['978-2723442275'],
+            ['978-2723455046'],
+            ['978-2070546817'],
+            ['978-2711858835'],
+            ['978-2756406763'],
+            ['978-2870971642'],
+            ['978-2266238540'],
+            ['978-2851806420'],
+            ['978-0321812704'],
+            ['978-0451225245'],
+            ['978-0471292319'],
+        ];
     }
 
     public function getInvalidIsbn13()
     {
-        return array(
-            array('978-27234422821', Isbn::TOO_LONG_ERROR),
-            array('978-272344228', Isbn::TOO_SHORT_ERROR),
-            array('978-2723442-82', Isbn::TOO_SHORT_ERROR),
-            array('978-2723442281', Isbn::CHECKSUM_FAILED_ERROR),
-            array('978-0321513774', Isbn::CHECKSUM_FAILED_ERROR),
-            array('979-0431225385', Isbn::CHECKSUM_FAILED_ERROR),
-            array('980-0474292319', Isbn::CHECKSUM_FAILED_ERROR),
-            array('0-4X19-92619812', Isbn::INVALID_CHARACTERS_ERROR),
-            array('978_2723442282', Isbn::INVALID_CHARACTERS_ERROR),
-            array('978#2723442282', Isbn::INVALID_CHARACTERS_ERROR),
-            array('978-272C442282', Isbn::INVALID_CHARACTERS_ERROR),
+        return [
+            ['978-27234422821', Isbn::TOO_LONG_ERROR],
+            ['978-272344228', Isbn::TOO_SHORT_ERROR],
+            ['978-2723442-82', Isbn::TOO_SHORT_ERROR],
+            ['978-2723442281', Isbn::CHECKSUM_FAILED_ERROR],
+            ['978-0321513774', Isbn::CHECKSUM_FAILED_ERROR],
+            ['979-0431225385', Isbn::CHECKSUM_FAILED_ERROR],
+            ['980-0474292319', Isbn::CHECKSUM_FAILED_ERROR],
+            ['0-4X19-92619812', Isbn::INVALID_CHARACTERS_ERROR],
+            ['978_2723442282', Isbn::INVALID_CHARACTERS_ERROR],
+            ['978#2723442282', Isbn::INVALID_CHARACTERS_ERROR],
+            ['978-272C442282', Isbn::INVALID_CHARACTERS_ERROR],
             // chr(1) evaluates to 0
             // 978-2070546817 is valid
-            array('978-2'.\chr(1).'70546817', Isbn::INVALID_CHARACTERS_ERROR),
-        );
+            ['978-2'.\chr(1).'70546817', Isbn::INVALID_CHARACTERS_ERROR],
+        ];
     }
 
     public function getValidIsbn()
@@ -151,9 +151,9 @@ public function testExpectsStringCompatibleType()
      */
     public function testValidIsbn10($isbn)
     {
-        $constraint = new Isbn(array(
+        $constraint = new Isbn([
             'type' => 'isbn10',
-        ));
+        ]);
 
         $this->validator->validate($isbn, $constraint);
 
@@ -165,10 +165,10 @@ public function testValidIsbn10($isbn)
      */
     public function testInvalidIsbn10($isbn, $code)
     {
-        $constraint = new Isbn(array(
+        $constraint = new Isbn([
             'type' => 'isbn10',
             'isbn10Message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($isbn, $constraint);
 
@@ -183,7 +183,7 @@ public function testInvalidIsbn10($isbn, $code)
      */
     public function testValidIsbn13($isbn)
     {
-        $constraint = new Isbn(array('type' => 'isbn13'));
+        $constraint = new Isbn(['type' => 'isbn13']);
 
         $this->validator->validate($isbn, $constraint);
 
@@ -195,10 +195,10 @@ public function testValidIsbn13($isbn)
      */
     public function testInvalidIsbn13($isbn, $code)
     {
-        $constraint = new Isbn(array(
+        $constraint = new Isbn([
             'type' => 'isbn13',
             'isbn13Message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($isbn, $constraint);
 
@@ -225,9 +225,9 @@ public function testValidIsbnAny($isbn)
      */
     public function testInvalidIsbnAnyIsbn10($isbn, $code)
     {
-        $constraint = new Isbn(array(
+        $constraint = new Isbn([
             'bothIsbnMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($isbn, $constraint);
 
@@ -247,9 +247,9 @@ public function testInvalidIsbnAnyIsbn10($isbn, $code)
      */
     public function testInvalidIsbnAnyIsbn13($isbn, $code)
     {
-        $constraint = new Isbn(array(
+        $constraint = new Isbn([
             'bothIsbnMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($isbn, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IssnValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IssnValidatorTest.php
index ca61ffac4c55..c9ca7ade8877 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IssnValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IssnValidatorTest.php
@@ -27,42 +27,42 @@ protected function createValidator()
 
     public function getValidLowerCasedIssn()
     {
-        return array(
-            array('2162-321x'),
-            array('2160-200x'),
-            array('1537-453x'),
-            array('1937-710x'),
-            array('0002-922x'),
-            array('1553-345x'),
-            array('1553-619x'),
-        );
+        return [
+            ['2162-321x'],
+            ['2160-200x'],
+            ['1537-453x'],
+            ['1937-710x'],
+            ['0002-922x'],
+            ['1553-345x'],
+            ['1553-619x'],
+        ];
     }
 
     public function getValidNonHyphenatedIssn()
     {
-        return array(
-            array('2162321X'),
-            array('01896016'),
-            array('15744647'),
-            array('14350645'),
-            array('07174055'),
-            array('20905076'),
-            array('14401592'),
-        );
+        return [
+            ['2162321X'],
+            ['01896016'],
+            ['15744647'],
+            ['14350645'],
+            ['07174055'],
+            ['20905076'],
+            ['14401592'],
+        ];
     }
 
     public function getFullValidIssn()
     {
-        return array(
-            array('1550-7416'),
-            array('1539-8560'),
-            array('2156-5376'),
-            array('1119-023X'),
-            array('1684-5315'),
-            array('1996-0786'),
-            array('1684-5374'),
-            array('1996-0794'),
-        );
+        return [
+            ['1550-7416'],
+            ['1539-8560'],
+            ['2156-5376'],
+            ['1119-023X'],
+            ['1684-5315'],
+            ['1996-0786'],
+            ['1684-5374'],
+            ['1996-0794'],
+        ];
     }
 
     public function getValidIssn()
@@ -76,16 +76,16 @@ public function getValidIssn()
 
     public function getInvalidIssn()
     {
-        return array(
-            array(0, Issn::TOO_SHORT_ERROR),
-            array('1539', Issn::TOO_SHORT_ERROR),
-            array('2156-537A', Issn::INVALID_CHARACTERS_ERROR),
-            array('1119-0231', Issn::CHECKSUM_FAILED_ERROR),
-            array('1684-5312', Issn::CHECKSUM_FAILED_ERROR),
-            array('1996-0783', Issn::CHECKSUM_FAILED_ERROR),
-            array('1684-537X', Issn::CHECKSUM_FAILED_ERROR),
-            array('1996-0795', Issn::CHECKSUM_FAILED_ERROR),
-        );
+        return [
+            [0, Issn::TOO_SHORT_ERROR],
+            ['1539', Issn::TOO_SHORT_ERROR],
+            ['2156-537A', Issn::INVALID_CHARACTERS_ERROR],
+            ['1119-0231', Issn::CHECKSUM_FAILED_ERROR],
+            ['1684-5312', Issn::CHECKSUM_FAILED_ERROR],
+            ['1996-0783', Issn::CHECKSUM_FAILED_ERROR],
+            ['1684-537X', Issn::CHECKSUM_FAILED_ERROR],
+            ['1996-0795', Issn::CHECKSUM_FAILED_ERROR],
+        ];
     }
 
     public function testNullIsValid()
@@ -120,10 +120,10 @@ public function testExpectsStringCompatibleType()
      */
     public function testCaseSensitiveIssns($issn)
     {
-        $constraint = new Issn(array(
+        $constraint = new Issn([
             'caseSensitive' => true,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($issn, $constraint);
 
@@ -138,10 +138,10 @@ public function testCaseSensitiveIssns($issn)
      */
     public function testRequireHyphenIssns($issn)
     {
-        $constraint = new Issn(array(
+        $constraint = new Issn([
             'requireHyphen' => true,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($issn, $constraint);
 
@@ -168,9 +168,9 @@ public function testValidIssn($issn)
      */
     public function testInvalidIssn($issn, $code)
     {
-        $constraint = new Issn(array(
+        $constraint = new Issn([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($issn, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LanguageValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LanguageValidatorTest.php
index 2980f2a23319..247301df2e16 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LanguageValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LanguageValidatorTest.php
@@ -57,11 +57,11 @@ public function testValidLanguages($language)
 
     public function getValidLanguages()
     {
-        return array(
-            array('en'),
-            array('en_US'),
-            array('my'),
-        );
+        return [
+            ['en'],
+            ['en_US'],
+            ['my'],
+        ];
     }
 
     /**
@@ -69,9 +69,9 @@ public function getValidLanguages()
      */
     public function testInvalidLanguages($language)
     {
-        $constraint = new Language(array(
+        $constraint = new Language([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($language, $constraint);
 
@@ -83,10 +83,10 @@ public function testInvalidLanguages($language)
 
     public function getInvalidLanguages()
     {
-        return array(
-            array('EN'),
-            array('foobar'),
-        );
+        return [
+            ['EN'],
+            ['foobar'],
+        ];
     }
 
     public function testValidateUsingCountrySpecificLocale()
@@ -96,9 +96,9 @@ public function testValidateUsingCountrySpecificLocale()
         \Locale::setDefault('fr_FR');
         $existingLanguage = 'en';
 
-        $this->validator->validate($existingLanguage, new Language(array(
+        $this->validator->validate($existingLanguage, new Language([
             'message' => 'aMessage',
-        )));
+        ]));
 
         $this->assertNoViolation();
     }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LengthValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LengthValidatorTest.php
index da98387ccb46..955d8b556453 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LengthValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LengthValidatorTest.php
@@ -46,50 +46,50 @@ public function testExpectsStringCompatibleType()
 
     public function getThreeOrLessCharacters()
     {
-        return array(
-            array(12),
-            array('12'),
-            array('üü'),
-            array('éé'),
-            array(123),
-            array('123'),
-            array('üüü'),
-            array('ééé'),
-        );
+        return [
+            [12],
+            ['12'],
+            ['üü'],
+            ['éé'],
+            [123],
+            ['123'],
+            ['üüü'],
+            ['ééé'],
+        ];
     }
 
     public function getFourCharacters()
     {
-        return array(
-            array(1234),
-            array('1234'),
-            array('üüüü'),
-            array('éééé'),
-        );
+        return [
+            [1234],
+            ['1234'],
+            ['üüüü'],
+            ['éééé'],
+        ];
     }
 
     public function getFiveOrMoreCharacters()
     {
-        return array(
-            array(12345),
-            array('12345'),
-            array('üüüüü'),
-            array('ééééé'),
-            array(123456),
-            array('123456'),
-            array('üüüüüü'),
-            array('éééééé'),
-        );
+        return [
+            [12345],
+            ['12345'],
+            ['üüüüü'],
+            ['ééééé'],
+            [123456],
+            ['123456'],
+            ['üüüüüü'],
+            ['éééééé'],
+        ];
     }
 
     public function getOneCharset()
     {
-        return array(
-            array('é', 'utf8', true),
-            array("\xE9", 'CP1252', true),
-            array("\xE9", 'XXX', false),
-            array("\xE9", 'utf8', false),
-        );
+        return [
+            ['é', 'utf8', true],
+            ["\xE9", 'CP1252', true],
+            ["\xE9", 'XXX', false],
+            ["\xE9", 'utf8', false],
+        ];
     }
 
     /**
@@ -97,7 +97,7 @@ public function getOneCharset()
      */
     public function testValidValuesMin($value)
     {
-        $constraint = new Length(array('min' => 5));
+        $constraint = new Length(['min' => 5]);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -108,7 +108,7 @@ public function testValidValuesMin($value)
      */
     public function testValidValuesMax($value)
     {
-        $constraint = new Length(array('max' => 3));
+        $constraint = new Length(['max' => 3]);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -130,10 +130,10 @@ public function testValidValuesExact($value)
      */
     public function testInvalidValuesMin($value)
     {
-        $constraint = new Length(array(
+        $constraint = new Length([
             'min' => 4,
             'minMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -151,10 +151,10 @@ public function testInvalidValuesMin($value)
      */
     public function testInvalidValuesMax($value)
     {
-        $constraint = new Length(array(
+        $constraint = new Length([
             'max' => 4,
             'maxMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $
10000
constraint);
 
@@ -172,11 +172,11 @@ public function testInvalidValuesMax($value)
      */
     public function testInvalidValuesExactLessThanFour($value)
     {
-        $constraint = new Length(array(
+        $constraint = new Length([
             'min' => 4,
             'max' => 4,
             'exactMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -194,11 +194,11 @@ public function testInvalidValuesExactLessThanFour($value)
      */
     public function testInvalidValuesExactMoreThanFour($value)
     {
-        $constraint = new Length(array(
+        $constraint = new Length([
             'min' => 4,
             'max' => 4,
             'exactMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -216,12 +216,12 @@ public function testInvalidValuesExactMoreThanFour($value)
      */
     public function testOneCharset($value, $charset, $isValid)
     {
-        $constraint = new Length(array(
+        $constraint = new Length([
             'min' => 1,
             'max' => 1,
             'charset' => $charset,
             'charsetMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LessThanOrEqualValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LessThanOrEqualValidatorTest.php
index f31a50e673c8..b77deff6163d 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LessThanOrEqualValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LessThanOrEqualValidatorTest.php
@@ -39,21 +39,21 @@ protected function getErrorCode()
      */
     public function provideValidComparisons()
     {
-        return array(
-            array(1, 2),
-            array(1, 1),
-            array(new \DateTime('2000-01-01'), new \DateTime('2000-01-01')),
-            array(new \DateTime('2000-01-01'), new \DateTime('2020-01-01')),
-            array(new \DateTime('2000-01-01'), '2000-01-01'),
-            array(new \DateTime('2000-01-01'), '2020-01-01'),
-            array(new \DateTime('2000-01-01 UTC'), '2000-01-01 UTC'),
-            array(new \DateTime('2000-01-01 UTC'), '2020-01-01 UTC'),
-            array(new ComparisonTest_Class(4), new ComparisonTest_Class(5)),
-            array(new ComparisonTest_Class(5), new ComparisonTest_Class(5)),
-            array('a', 'a'),
-            array('a', 'z'),
-            array(null, 1),
-        );
+        return [
+            [1, 2],
+            [1, 1],
+            [new \DateTime('2000-01-01'), new \DateTime('2000-01-01')],
+            [new \DateTime('2000-01-01'), new \DateTime('2020-01-01')],
+            [new \DateTime('2000-01-01'), '2000-01-01'],
+            [new \DateTime('2000-01-01'), '2020-01-01'],
+            [new \DateTime('2000-01-01 UTC'), '2000-01-01 UTC'],
+            [new \DateTime('2000-01-01 UTC'), '2020-01-01 UTC'],
+            [new ComparisonTest_Class(4), new ComparisonTest_Class(5)],
+            [new ComparisonTest_Class(5), new ComparisonTest_Class(5)],
+            ['a', 'a'],
+            ['a', 'z'],
+            [null, 1],
+        ];
     }
 
     /**
@@ -61,10 +61,10 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(4),
-            array(5),
-        );
+        return [
+            [4],
+            [5],
+        ];
     }
 
     /**
@@ -72,13 +72,13 @@ public function provideValidComparisonsToPropertyPath()
      */
     public function provideInvalidComparisons()
     {
-        return array(
-            array(2, '2', 1, '1', 'integer'),
-            array(new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2010-01-01 UTC'), 'Jan 1, 2010, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new ComparisonTest_Class(5), '5', new ComparisonTest_Class(4), '4', __NAMESPACE__.'\ComparisonTest_Class'),
-            array('c', '"c"', 'b', '"b"', 'string'),
-        );
+        return [
+            [2, '2', 1, '1', 'integer'],
+            [new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2010-01-01 UTC'), 'Jan 1, 2010, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new ComparisonTest_Class(5), '5', new ComparisonTest_Class(4), '4', __NAMESPACE__.'\ComparisonTest_Class'],
+            ['c', '"c"', 'b', '"b"', 'string'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LessThanValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LessThanValidatorTest.php
index a5d69355d7e5..7d209ed5d471 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LessThanValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LessThanValidatorTest.php
@@ -39,15 +39,15 @@ protected function getErrorCode()
      */
     public function provideValidComparisons()
     {
-        return array(
-            array(1, 2),
-            array(new \DateTime('2000-01-01'), new \DateTime('2010-01-01')),
-            array(new \DateTime('2000-01-01'), '2010-01-01'),
-            array(new \DateTime('2000-01-01 UTC'), '2010-01-01 UTC'),
-            array(new ComparisonTest_Class(4), new ComparisonTest_Class(5)),
-            array('22', '333'),
-            array(null, 1),
-        );
+        return [
+            [1, 2],
+            [new \DateTime('2000-01-01'), new \DateTime('2010-01-01')],
+            [new \DateTime('2000-01-01'), '2010-01-01'],
+            [new \DateTime('2000-01-01 UTC'), '2010-01-01 UTC'],
+            [new ComparisonTest_Class(4), new ComparisonTest_Class(5)],
+            ['22', '333'],
+            [null, 1],
+        ];
     }
 
     /**
@@ -55,9 +55,9 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(4),
-        );
+        return [
+            [4],
+        ];
     }
 
     /**
@@ -65,18 +65,18 @@ public function provideValidComparisonsToPropertyPath()
      */
     public function provideInvalidComparisons()
     {
-        return array(
-            array(3, '3', 2, '2', 'integer'),
-            array(2, '2', 2, '2', 'integer'),
-            array(new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2010-01-01 UTC'), 'Jan 1, 2010, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000-01-01 UTC'), 'Jan 1, 2000, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new ComparisonTest_Class(5), '5', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'),
-            array(new ComparisonTest_Class(6), '6', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'),
-            array('333', '"333"', '22', '"22"', 'string'),
-        );
+        return [
+            [3, '3', 2, '2', 'integer'],
+            [2, '2', 2, '2', 'integer'],
+            [new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2010-01-01 UTC'), 'Jan 1, 2010, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000-01-01 UTC'), 'Jan 1, 2000, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new ComparisonTest_Class(5), '5', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'],
+            [new ComparisonTest_Class(6), '6', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'],
+            ['333', '"333"', '22', '"22"', 'string'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
index 29409e61f52f..3d5123116534 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
@@ -56,14 +56,14 @@ public function testValidLocales($locale)
 
     public function getValidLocales()
     {
-        return array(
-            array('en'),
-            array('en_US'),
-            array('pt'),
-            array('pt_PT'),
-            array('zh_Hans'),
-            array('fil_PH'),
-        );
+        return [
+            ['en'],
+            ['en_US'],
+            ['pt'],
+            ['pt_PT'],
+            ['zh_Hans'],
+            ['fil_PH'],
+        ];
     }
 
     /**
@@ -71,9 +71,9 @@ public function getValidLocales()
      */
     public function testInvalidLocales($locale)
     {
-        $constraint = new Locale(array(
+        $constraint = new Locale([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($locale, $constraint);
 
@@ -85,9 +85,9 @@ public function testInvalidLocales($locale)
 
     public function getInvalidLocales()
     {
-        return array(
-            array('EN'),
-            array('foobar'),
-        );
+        return [
+            ['EN'],
+            ['foobar'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LuhnValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LuhnValidatorTest.php
index 3ee04d7f4682..02aae3adbc31 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LuhnValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LuhnValidatorTest.php
@@ -48,26 +48,26 @@ public function testValidNumbers($number)
 
     public function getValidNumbers()
     {
-        return array(
-            array('42424242424242424242'),
-            array('378282246310005'),
-            array('371449635398431'),
-            array('378734493671000'),
-            array('5610591081018250'),
-            array('30569309025904'),
-            array('38520000023237'),
-            array('6011111111111117'),
-            array('6011000990139424'),
-            array('3530111333300000'),
-            array('3566002020360505'),
-            array('5555555555554444'),
-            array('5105105105105100'),
-            array('4111111111111111'),
-            array('4012888888881881'),
-            array('4222222222222'),
-            array('5019717010103742'),
-            array('6331101999990016'),
-        );
+        return [
+            ['42424242424242424242'],
+            ['378282246310005'],
+            ['371449635398431'],
+            ['378734493671000'],
+            ['5610591081018250'],
+            ['30569309025904'],
+            ['38520000023237'],
+            ['6011111111111117'],
+            ['6011000990139424'],
+            ['3530111333300000'],
+            ['3566002020360505'],
+            ['5555555555554444'],
+            ['5105105105105100'],
+            ['4111111111111111'],
+            ['4012888888881881'],
+            ['4222222222222'],
+            ['5019717010103742'],
+            ['6331101999990016'],
+        ];
     }
 
     /**
@@ -75,9 +75,9 @@ public function getValidNumbers()
      */
     public function testInvalidNumbers($number, $code)
     {
-        $constraint = new Luhn(array(
+        $constraint = new Luhn([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($number, $constraint);
 
@@ -89,13 +89,13 @@ public function testInvalidNumbers($number, $code)
 
     public function getInvalidNumbers()
     {
-        return array(
-            array('1234567812345678', Luhn::CHECKSUM_FAILED_ERROR),
-            array('4222222222222222', Luhn::CHECKSUM_FAILED_ERROR),
-            array('0000000000000000', Luhn::CHECKSUM_FAILED_ERROR),
-            array('000000!000000000', Luhn::INVALID_CHARACTERS_ERROR),
-            array('42-22222222222222', Luhn::INVALID_CHARACTERS_ERROR),
-        );
+        return [
+            ['1234567812345678', Luhn::CHECKSUM_FAILED_ERROR],
+            ['4222222222222222', Luhn::CHECKSUM_FAILED_ERROR],
+            ['0000000000000000', Luhn::CHECKSUM_FAILED_ERROR],
+            ['000000!000000000', Luhn::INVALID_CHARACTERS_ERROR],
+            ['42-22222222222222', Luhn::INVALID_CHARACTERS_ERROR],
+        ];
     }
 
     /**
@@ -111,12 +111,12 @@ public function testInvalidTypes($number)
 
     public function getInvalidTypes()
     {
-        return array(
-            array(0),
-            array(123),
-            array(42424242424242424242),
-            array(378282246310005),
-            array(371449635398431),
-        );
+        return [
+            [0],
+            [123],
+            [42424242424242424242],
+            [378282246310005],
+            [371449635398431],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NotBlankValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NotBlankValidatorTest.php
index fd92febf9b29..f634e0c11c24 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NotBlankValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NotBlankValidatorTest.php
@@ -34,20 +34,20 @@ public function testValidValues($value)
 
     public function getValidValues()
     {
-        return array(
-            array('foobar'),
-            array(0),
-            array(0.0),
-            array('0'),
-            array(1234),
-        );
+        return [
+            ['foobar'],
+            [0],
+            [0.0],
+            ['0'],
+            [1234],
+        ];
     }
 
     public function testNullIsInvalid()
     {
-        $constraint = new NotBlank(array(
+        $constraint = new NotBlank([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate(null, $constraint);
 
@@ -59,9 +59,9 @@ public function testNullIsInvalid()
 
     public function testBlankIsInvalid()
     {
-        $constraint = new NotBlank(array(
+        $constraint = new NotBlank([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('', $constraint);
 
@@ -73,9 +73,9 @@ public function testBlankIsInvalid()
 
     public function testFalseIsInvalid()
     {
-        $constraint = new NotBlank(array(
+        $constraint = new NotBlank([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate(false, $constraint);
 
@@ -87,11 +87,11 @@ public function testFalseIsInvalid()
 
     public function testEmptyArrayIsInvalid()
     {
-        $constraint = new NotBlank(array(
+        $constraint = new NotBlank([
             'message' => 'myMessage',
-        ));
+        ]);
 
-        $this->validator->validate(array(), $constraint);
+        $this->validator->validate([], $constraint);
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ value }}', 'array')
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NotEqualToValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NotEqualToValidatorTest.php
index e7031d4c4dfd..810f7a175f10 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NotEqualToValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NotEqualToValidatorTest.php
@@ -39,15 +39,15 @@ protected function getErrorCode()
      */
     public function provideValidComparisons()
     {
-        return array(
-            array(1, 2),
-            array('22', '333'),
-            array(new \DateTime('2001-01-01'), new \DateTime('2000-01-01')),
-            array(new \DateTime('2001-01-01'), '2000-01-01'),
-            array(new \DateTime('2001-01-01 UTC'), '2000-01-01 UTC'),
-            array(new ComparisonTest_Class(6), new ComparisonTest_Class(5)),
-            array(null, 1),
-        );
+        return [
+            [1, 2],
+            ['22', '333'],
+            [new \DateTime('2001-01-01'), new \DateTime('2000-01-01')],
+            [new \DateTime('2001-01-01'), '2000-01-01'],
+            [new \DateTime('2001-01-01 UTC'), '2000-01-01 UTC'],
+            [new ComparisonTest_Class(6), new ComparisonTest_Class(5)],
+            [null, 1],
+        ];
     }
 
     /**
@@ -55,9 +55,9 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(0),
-        );
+        return [
+            [0],
+        ];
     }
 
     /**
@@ -65,14 +65,14 @@ public function provideValidComparisonsToPropertyPath()
      */
     public function provideInvalidComparisons()
     {
-        return array(
-            array(3, '3', 3, '3', 'integer'),
-            array('2', '"2"', 2, '2', 'integer'),
-            array('a', '"a"', 'a', '"a"', 'string'),
-            array(new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000-01-01 UTC'), 'Jan 1, 2000, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array(new ComparisonTest_Class(5), '5', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'),
-        );
+        return [
+            [3, '3', 3, '3', 'integer'],
+            ['2', '"2"', 2, '2', 'integer'],
+            ['a', '"a"', 'a', '"a"', 'string'],
+            [new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', '2000-01-01', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new \DateTime('2000-01-01 UTC'), 'Jan 1, 2000, 12:00 AM', '2000-01-01 UTC', 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [new ComparisonTest_Class(5), '5', new ComparisonTest_Class(5), '5', __NAMESPACE__.'\ComparisonTest_Class'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NotIdenticalToValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NotIdenticalToValidatorTest.php
index 907f36c06329..0cb9ec543114 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NotIdenticalToValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NotIdenticalToValidatorTest.php
@@ -39,18 +39,18 @@ protected function getErrorCode()
      */
     public function provideValidComparisons()
     {
-        return array(
-            array(1, 2),
-            array('2', 2),
-            array('22', '333'),
-            array(new \DateTime('2001-01-01'), new \DateTime('2000-01-01')),
-            array(new \DateTime('2000-01-01'), new \DateTime('2000-01-01')),
-            array(new \DateTime('2001-01-01'), '2000-01-01'),
-            array(new \DateTime('2000-01-01'), '2000-01-01'),
-            array(new \DateTime('2001-01-01'), '2000-01-01'),
-            array(new \DateTime('2000-01-01 UTC'), '2000-01-01 UTC'),
-            array(null, 1),
-        );
+        return [
+            [1, 2],
+            ['2', 2],
+            ['22', '333'],
+            [new \DateTime('2001-01-01'), new \DateTime('2000-01-01')],
+            [new \DateTime('2000-01-01'), new \DateTime('2000-01-01')],
+            [new \DateTime('2001-01-01'), '2000-01-01'],
+            [new \DateTime('2000-01-01'), '2000-01-01'],
+            [new \DateTime('2001-01-01'), '2000-01-01'],
+            [new \DateTime('2000-01-01 UTC'), '2000-01-01 UTC'],
+            [null, 1],
+        ];
     }
 
     /**
@@ -58,9 +58,9 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(0),
-        );
+        return [
+            [0],
+        ];
     }
 
     public function provideAllInvalidComparisons()
@@ -84,12 +84,12 @@ public function provideInvalidComparisons()
         $date = new \DateTime('2000-01-01');
         $object = new ComparisonTest_Class(2);
 
-        $comparisons = array(
-            array(3, '3', 3, '3', 'integer'),
-            array('a', '"a"', 'a', '"a"', 'string'),
-            array($date, 'Jan 1, 2000, 12:00 AM', $date, 'Jan 1, 2000, 12:00 AM', 'DateTime'),
-            array($object, '2', $object, '2', __NAMESPACE__.'\ComparisonTest_Class'),
-        );
+        $comparisons = [
+            [3, '3', 3, '3', 'integer'],
+            ['a', '"a"', 'a', '"a"', 'string'],
+            [$date, 'Jan 1, 2000, 12:00 AM', $date, 'Jan 1, 2000, 12:00 AM', 'DateTime'],
+            [$object, '2', $object, '2', __NAMESPACE__.'\ComparisonTest_Class'],
+        ];
 
         return $comparisons;
     }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NotNullValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NotNullValidatorTest.php
index feb3c2f8e787..a726d063b993 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NotNullValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NotNullValidatorTest.php
@@ -34,19 +34,19 @@ public function testValidValues($value)
 
     public function getValidValues()
     {
-        return array(
-            array(0),
-            array(false),
-            array(true),
-            array(''),
-        );
+        return [
+            [0],
+            [false],
+            [true],
+            [''],
+        ];
     }
 
     public function testNullIsInvalid()
     {
-        $constraint = new NotNull(array(
+        $constraint = new NotNull([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate(null, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php
index 7eb931ee9203..661161d886a2 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/RangeValidatorTest.php
@@ -25,43 +25,43 @@ protected function createValidator()
 
     public function testNullIsValid()
     {
-        $this->validator->validate(null, new Range(array('min' => 10, 'max' => 20)));
+        $this->validator->validate(null, new Range(['min' => 10, 'max' => 20]));
 
         $this->assertNoViolation();
     }
 
     public function getTenToTwenty()
     {
-        return array(
-            array(10.00001),
-            array(19.99999),
-            array('10.00001'),
-            array('19.99999'),
-            array(10),
-            array(20),
-            array(10.0),
-            array(20.0),
-        );
+        return [
+            [10.00001],
+            [19.99999],
+            ['10.00001'],
+            ['19.99999'],
+            [10],
+            [20],
+            [10.0],
+            [20.0],
+        ];
     }
 
     public function getLessThanTen()
     {
-        return array(
-            array(9.99999, '9.99999'),
-            array('9.99999', '"9.99999"'),
-            array(5, '5'),
-            array(1.0, '1.0'),
-        );
+        return [
+            [9.99999, '9.99999'],
+            ['9.99999', '"9.99999"'],
+            [5, '5'],
+            [1.0, '1.0'],
+        ];
     }
 
     public function getMoreThanTwenty()
     {
-        return array(
-            array(20.000001, '20.000001'),
-            array('20.000001', '"20.000001"'),
-            array(21, '21'),
-            array(30.0, '30.0'),
-        );
+        return [
+            [20.000001, '20.000001'],
+            ['20.000001', '"20.000001"'],
+            [21, '21'],
+            [30.0, '30.0'],
+        ];
     }
 
     /**
@@ -69,7 +69,7 @@ public function getMoreThanTwenty()
      */
     public function testValidValuesMin($value)
     {
-        $constraint = new Range(array('min' => 10));
+        $constraint = new Range(['min' => 10]);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -80,7 +80,7 @@ public function testValidValuesMin($value)
      */
     public function testValidValuesMax($value)
     {
-        $constraint = new Range(array('max' => 20));
+        $constraint = new Range(['max' => 20]);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -91,7 +91,7 @@ public function testValidValuesMax($value)
      */
     public function testValidValuesMinMax($value)
     {
-        $constraint = new Range(array('min' => 10, 'max' => 20));
+        $constraint = new Range(['min' => 10, 'max' => 20]);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -102,10 +102,10 @@ public function testValidValuesMinMax($value)
      */
     public function testInvalidValuesMin($value, $formattedValue)
     {
-        $constraint = new Range(array(
+        $constraint = new Range([
             'min' => 10,
             'minMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -121,10 +121,10 @@ public function testInvalidValuesMin($value, $formattedValue)
      */
     public function testInvalidValuesMax($value, $formattedValue)
     {
-        $constraint = new Range(array(
+        $constraint = new Range([
             'max' => 20,
             'maxMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -140,12 +140,12 @@ public function testInvalidValuesMax($value, $formattedValue)
      */
     public function testInvalidValuesCombinedMax($value, $formattedValue)
     {
-        $constraint = new Range(array(
+        $constraint = new Range([
             'min' => 10,
             'max' => 20,
             'minMessage' => 'myMinMessage',
             'maxMessage' => 'myMaxMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -161,12 +161,12 @@ public function testInvalidValuesCombinedMax($value, $formattedValue)
      */
     public function testInvalidValuesCombinedMin($value, $formattedValue)
     {
-        $constraint = new Range(array(
+        $constraint = new Range([
             'min' => 10,
             'max' => 20,
             'minMessage' => 'myMinMessage',
             'maxMessage' => 'myMaxMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -183,15 +183,15 @@ public function getTenthToTwentiethMarch2014()
         // the default timezone
         $this->setDefaultTimezone('UTC');
 
-        $tests = array(
-            array(new \DateTime('March 10, 2014')),
-            array(new \DateTime('March 15, 2014')),
-            array(new \DateTime('March 20, 2014')),
-        );
+        $tests = [
+            [new \DateTime('March 10, 2014')],
+            [new \DateTime('March 15, 2014')],
+            [new \DateTime('March 20, 2014')],
+        ];
 
-        $tests[] = array(new \DateTimeImmutable('March 10, 2014'));
-        $tests[] = array(new \DateTimeImmutable('March 15, 2014'));
-        $tests[] = array(new \DateTimeImmutable('March 20, 2014'));
+        $tests[] = [new \DateTimeImmutable('March 10, 2014')];
+        $tests[] = [new \DateTimeImmutable('March 15, 2014')];
+        $tests[] = [new \DateTimeImmutable('March 20, 2014')];
 
         $this->restoreDefaultTimezone();
 
@@ -204,13 +204,13 @@ public function getSoonerThanTenthMarch2014()
         // the default timezone
         $this->setDefaultTimezone('UTC');
 
-        $tests = array(
-            array(new \DateTime('March 20, 2013'), 'Mar 20, 2013, 12:00 AM'),
-            array(new \DateTime('March 9, 2014'), 'Mar 9, 2014, 12:00 AM'),
-        );
+        $tests = [
+            [new \DateTime('March 20, 2013'), 'Mar 20, 2013, 12:00 AM'],
+            [new \DateTime('March 9, 2014'), 'Mar 9, 2014, 12:00 AM'],
+        ];
 
-        $tests[] = array(new \DateTimeImmutable('March 20, 2013'), 'Mar 20, 2013, 12:00 AM');
-        $tests[] = array(new \DateTimeImmutable('March 9, 2014'), 'Mar 9, 2014, 12:00 AM');
+        $tests[] = [new \DateTimeImmutable('March 20, 2013'), 'Mar 20, 2013, 12:00 AM'];
+        $tests[] = [new \DateTimeImmutable('March 9, 2014'), 'Mar 9, 2014, 12:00 AM'];
 
         $this->restoreDefaultTimezone();
 
@@ -223,13 +223,13 @@ public function getLaterThanTwentiethMarch2014()
         // the default timezone
         $this->setDefaultTimezone('UTC');
 
-        $tests = array(
-            array(new \DateTime('March 21, 2014'), 'Mar 21, 2014, 12:00 AM'),
-            array(new \DateTime('March 9, 2015'), 'Mar 9, 2015, 12:00 AM'),
-        );
+        $tests = [
+            [new \DateTime('March 21, 2014'), 'Mar 21, 2014, 12:00 AM'],
+            [new \DateTime('March 9, 2015'), 'Mar 9, 2015, 12:00 AM'],
+        ];
 
-        $tests[] = array(new \DateTimeImmutable('March 21, 2014'), 'Mar 21, 2014, 12:00 AM');
-        $tests[] = array(new \DateTimeImmutable('March 9, 2015'), 'Mar 9, 2015, 12:00 AM');
+        $tests[] = [new \DateTimeImmutable('March 21, 2014'), 'Mar 21, 2014, 12:00 AM'];
+        $tests[] = [new \DateTimeImmutable('March 9, 2015'), 'Mar 9, 2015, 12:00 AM'];
 
         $this->restoreDefaultTimezone();
 
@@ -241,7 +241,7 @@ public function getLaterThanTwentiethMarch2014()
      */
     public function testValidDatesMin($value)
     {
-        $constraint = new Range(array('min' => 'March 10, 2014'));
+        $constraint = new Range(['min' => 'March 10, 2014']);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -252,7 +252,7 @@ public function testValidDatesMin($value)
      */
     public function testValidDatesMax($value)
     {
-        $constraint = new Range(array('max' => 'March 20, 2014'));
+        $constraint = new Range(['max' => 'March 20, 2014']);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -263,7 +263,7 @@ public function testValidDatesMax($value)
      */
     public function testValidDatesMinMax($value)
     {
-        $constraint = new Range(array('min' => 'March 10, 2014', 'max' => 'March 20, 2014'));
+        $constraint = new Range(['min' => 'March 10, 2014', 'max' => 'March 20, 2014']);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -278,10 +278,10 @@ public function testInvalidDatesMin($value, $dateTimeAsString)
         // Make sure we have the correct version loaded
         IntlTestHelper::requireIntl($this, '57.1');
 
-        $constraint = new Range(array(
+        $constraint = new Range([
             'min' => 'March 10, 2014',
             'minMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -301,10 +301,10 @@ public function testInvalidDatesMax($value, $dateTimeAsString)
         // Make sure we have the correct version loaded
         IntlTestHelper::requireIntl($this, '57.1');
 
-        $constraint = new Range(array(
+        $constraint = new Range([
             'max' => 'March 20, 2014',
             'maxMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -324,12 +324,12 @@ public function testInvalidDatesCombinedMax($value, $dateTimeAsString)
         // Make sure we have the correct version loaded
         IntlTestHelper::requireIntl($this, '57.1');
 
-        $constraint = new Range(array(
+        $constraint = new Range([
             'min' => 'March 10, 2014',
             'max' => 'March 20, 2014',
             'minMessage' => 'myMinMessage',
             'maxMessage' => 'myMaxMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -349,12 +349,12 @@ public function testInvalidDatesCombinedMin($value, $dateTimeAsString)
         // Make sure we have the correct version loaded
         IntlTestHelper::requireIntl($this, '57.1');
 
-        $constraint = new Range(array(
+        $constraint = new Range([
             'min' => 'March 10, 2014',
             'max' => 'March 20, 2014',
             'minMessage' => 'myMinMessage',
             'maxMessage' => 'myMaxMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -367,22 +367,22 @@ public function testInvalidDatesCombinedMin($value, $dateTimeAsString)
 
     public function getInvalidValues()
     {
-        return array(
-            array(9.999999),
-            array(20.000001),
-            array('9.999999'),
-            array('20.000001'),
-            array(new \stdClass()),
-        );
+        return [
+            [9.999999],
+            [20.000001],
+            ['9.999999'],
+            ['20.000001'],
+            [new \stdClass()],
+        ];
     }
 
     public function testNonNumeric()
     {
-        $this->validator->validate('abcd', new Range(array(
+        $this->validator->validate('abcd', new Range([
             'min' => 10,
             'max' => 20,
             'invalidMessage' => 'myMessage',
-        )));
+        ]));
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ value }}', '"abcd"')
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/RegexTest.php b/src/Symfony/Component/Validator/Tests/Constraints/RegexTest.php
index 26ef1b27361a..8dc1e4af7dea 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/RegexTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/RegexTest.php
@@ -28,37 +28,37 @@ public function testConstraintGetDefaultOption()
 
     public function provideHtmlPatterns()
     {
-        return array(
+        return [
             // HTML5 wraps the pattern in ^(?:pattern)$
-            array('/^[0-9]+$/', '[0-9]+'),
-            array('/[0-9]+$/', '.*[0-9]+'),
-            array('/^[0-9]+/', '[0-9]+.*'),
-            array('/[0-9]+/', '.*[0-9]+.*'),
+            ['/^[0-9]+$/', '[0-9]+'],
+            ['/[0-9]+$/', '.*[0-9]+'],
+            ['/^[0-9]+/', '[0-9]+.*'],
+            ['/[0-9]+/', '.*[0-9]+.*'],
             // We need a smart way to allow matching of patterns that contain
             // ^ and $ at various sub-clauses of an or-clause
             // .*(pattern).* seems to work correctly
-            array('/[0-9]$|[a-z]+/', '.*([0-9]$|[a-z]+).*'),
-            array('/[0-9]$|^[a-z]+/', '.*([0-9]$|^[a-z]+).*'),
-            array('/^[0-9]|[a-z]+$/', '.*(^[0-9]|[a-z]+$).*'),
+            ['/[0-9]$|[a-z]+/', '.*([0-9]$|[a-z]+).*'],
+            ['/[0-9]$|^[a-z]+/', '.*([0-9]$|^[a-z]+).*'],
+            ['/^[0-9]|[a-z]+$/', '.*(^[0-9]|[a-z]+$).*'],
             // Unescape escaped delimiters
-            array('/^[0-9]+\/$/', '[0-9]+/'),
-            array('#^[0-9]+\#$#', '[0-9]+#'),
+            ['/^[0-9]+\/$/', '[0-9]+/'],
+            ['#^[0-9]+\#$#', '[0-9]+#'],
             // Cannot be converted
-            array('/^[0-9]+$/i', null),
+            ['/^[0-9]+$/i', null],
 
             // Inverse matches are simple, just wrap in
             // ((?!pattern).)*
-            array('/^[0-9]+$/', '((?!^[0-9]+$).)*', false),
-            array('/[0-9]+$/', '((?![0-9]+$).)*', false),
-            array('/^[0-9]+/', '((?!^[0-9]+).)*', false),
-            array('/[0-9]+/', '((?![0-9]+).)*', false),
-            array('/[0-9]$|[a-z]+/', '((?![0-9]$|[a-z]+).)*', false),
-            array('/[0-9]$|^[a-z]+/', '((?![0-9]$|^[a-z]+).)*', false),
-            array('/^[0-9]|[a-z]+$/', '((?!^[0-9]|[a-z]+$).)*', false),
-            array('/^[0-9]+\/$/', '((?!^[0-9]+/$).)*', false),
-            array('#^[0-9]+\#$#', '((?!^[0-9]+#$).)*', false),
-            array('/^[0-9]+$/i', null, false),
-        );
+            ['/^[0-9]+$/', '((?!^[0-9]+$).)*', false],
+            ['/[0-9]+$/', '((?![0-9]+$).)*', false],
+            ['/^[0-9]+/', '((?!^[0-9]+).)*', false],
+            ['/[0-9]+/', '((?![0-9]+).)*', false],
+            ['/[0-9]$|[a-z]+/', '((?![0-9]$|[a-z]+).)*', false],
+            ['/[0-9]$|^[a-z]+/', '((?![0-9]$|^[a-z]+).)*', false],
+            ['/^[0-9]|[a-z]+$/', '((?!^[0-9]|[a-z]+$).)*', false],
+            ['/^[0-9]+\/$/', '((?!^[0-9]+/$).)*', false],
+            ['#^[0-9]+\#$#', '((?!^[0-9]+#$).)*', false],
+            ['/^[0-9]+$/i', null, false],
+        ];
     }
 
     /**
@@ -66,10 +66,10 @@ public function provideHtmlPatterns()
      */
     public function testGetHtmlPattern($pattern, $htmlPattern, $match = true)
     {
-        $constraint = new Regex(array(
+        $constraint = new Regex([
             'pattern' => $pattern,
             'match' => $match,
-        ));
+        ]);
 
         $this->assertSame($pattern, $constraint->pattern);
         $this->assertSame($htmlPattern, $constraint->getHtmlPattern());
@@ -77,10 +77,10 @@ public function testGetHtmlPattern($pattern, $htmlPattern, $match = true)
 
     public function testGetCustomHtmlPattern()
     {
-        $constraint = new Regex(array(
+        $constraint = new Regex([
             'pattern' => '((?![0-9]$|[a-z]+).)*',
             'htmlPattern' => 'foobar',
-        ));
+        ]);
 
         $this->assertSame('((?![0-9]$|[a-z]+).)*', $constraint->pattern);
         $this->assertSame('foobar', $constraint->getHtmlPattern());
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/RegexValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/RegexValidatorTest.php
index 5194b0816ea3..55e739b03688 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/RegexValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/RegexValidatorTest.php
@@ -24,14 +24,14 @@ protected function createValidator()
 
     public function testNullIsValid()
     {
-        $this->validator->validate(null, new Regex(array('pattern' => '/^[0-9]+$/')));
+        $this->validator->validate(null, new Regex(['pattern' => '/^[0-9]+$/']));
 
         $this->assertNoViolation();
     }
 
     public function testEmptyStringIsValid()
     {
-        $this->validator->validate('', new Regex(array('pattern' => '/^[0-9]+$/')));
+        $this->validator->validate('', new Regex(['pattern' => '/^[0-9]+$/']));
 
         $this->assertNoViolation();
     }
@@ -41,7 +41,7 @@ public function testEmptyStringIsValid()
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->validate(new \stdClass(), new Regex(array('pattern' => '/^[0-9]+$/')));
+        $this->validator->validate(new \stdClass(), new Regex(['pattern' => '/^[0-9]+$/']));
     }
 
     /**
@@ -49,7 +49,7 @@ public function testExpectsStringCompatibleType()
      */
     public function testValidValues($value)
     {
-        $constraint = new Regex(array('pattern' => '/^[0-9]+$/'));
+        $constraint = new Regex(['pattern' => '/^[0-9]+$/']);
         $this->validator->validate($value, $constraint);
 
         $this->assertNoViolation();
@@ -57,12 +57,12 @@ public function testValidValues($value)
 
     public function getValidValues()
     {
-        return array(
-            array(0),
-            array('0'),
-            array('090909'),
-            array(90909),
-        );
+        return [
+            [0],
+            ['0'],
+            ['090909'],
+            [90909],
+        ];
     }
 
     /**
@@ -70,10 +70,10 @@ public function getValidValues()
      */
     public function testInvalidValues($value)
     {
-        $constraint = new Regex(array(
+        $constraint = new Regex([
             'pattern' => '/^[0-9]+$/',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -85,9 +85,9 @@ public function testInvalidValues($value)
 
     public function getInvalidValues()
     {
-        return array(
-            array('abcd'),
-            array('090foo'),
-        );
+        return [
+            ['abcd'],
+            ['090foo'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/TimeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/TimeValidatorTest.php
index a22251d0ee3c..fe22e9673b7c 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/TimeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/TimeValidatorTest.php
@@ -63,11 +63,11 @@ public function testValidTimes($time)
 
     public function getValidTimes()
     {
-        return array(
-            array('01:02:03'),
-            array('00:00:00'),
-            array('23:59:59'),
-        );
+        return [
+            ['01:02:03'],
+            ['00:00:00'],
+            ['23:59:59'],
+        ];
     }
 
     /**
@@ -75,9 +75,9 @@ public function getValidTimes()
      */
     public function testInvalidTimes($time, $code)
     {
-        $constraint = new Time(array(
+        $constraint = new Time([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($time, $constraint);
 
@@ -89,15 +89,15 @@ public function testInvalidTimes($time, $code)
 
     public function getInvalidTimes()
     {
-        return array(
-            array('foobar', Time::INVALID_FORMAT_ERROR),
-            array('foobar 12:34:56', Time::INVALID_FORMAT_ERROR),
-            array('12:34:56 foobar', Time::INVALID_FORMAT_ERROR),
-            array('00:00', Time::INVALID_FORMAT_ERROR),
-            array('24:00:00', Time::INVALID_TIME_ERROR),
-            array('00:60:00', Time::INVALID_TIME_ERROR),
-            array('00:00:60', Time::INVALID_TIME_ERROR),
-        );
+        return [
+            ['foobar', Time::INVALID_FORMAT_ERROR],
+            ['foobar 12:34:56', Time::INVALID_FORMAT_ERROR],
+            ['12:34:56 foobar', Time::INVALID_FORMAT_ERROR],
+            ['00:00', Time::INVALID_FORMAT_ERROR],
+            ['24:00:00', Time::INVALID_TIME_ERROR],
+            ['00:60:00', Time::INVALID_TIME_ERROR],
+            ['00:00:60', Time::INVALID_TIME_ERROR],
+        ];
     }
 
     public function testDateTimeImmutableIsValid()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/TypeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/TypeValidatorTest.php
index 86ce972a466b..17334bea7925 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/TypeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/TypeValidatorTest.php
@@ -26,7 +26,7 @@ protected function createValidator()
 
     public function testNullIsValid()
     {
-        $constraint = new Type(array('type' => 'integer'));
+        $constraint = new Type(['type' => 'integer']);
 
         $this->validator->validate(null, $constraint);
 
@@ -35,7 +35,7 @@ public function testNullIsValid()
 
     public function testEmptyIsValidIfString()
     {
-        $constraint = new Type(array('type' => 'string'));
+        $constraint = new Type(['type' => 'string']);
 
         $this->validator->validate('', $constraint);
 
@@ -44,10 +44,10 @@ public function testEmptyIsValidIfString()
 
     public function testEmptyIsInvalidIfNoString()
     {
-        $constraint = new Type(array(
+        $constraint = new Type([
             'type' => 'integer',
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('', $constraint);
 
@@ -63,7 +63,7 @@ public function testEmptyIsInvalidIfNoString()
      */
     public function testValidValues($value, $type)
     {
-        $constraint = new Type(array('type' => $type));
+        $constraint = new Type(['type' => $type]);
 
         $this->validator->validate($value, $constraint);
 
@@ -75,36 +75,36 @@ public function getValidValues()
         $object = new \stdClass();
         $file = $this->createFile();
 
-        return array(
-            array(true, 'Boolean'),
-            array(false, 'Boolean'),
-            array(true, 'boolean'),
-            array(false, 'boolean'),
-            array(true, 'bool'),
-            array(false, 'bool'),
-            array(0, 'numeric'),
-            array('0', 'numeric'),
-            array(1.5, 'numeric'),
-            array('1.5', 'numeric'),
-            array(0, 'integer'),
-            array(1.5, 'float'),
-            array('12345', 'string'),
-            array(array(), 'array'),
-            array($object, 'object'),
-            array($object, 'stdClass'),
-            array($file, 'resource'),
-            array('12345', 'digit'),
-            array('12a34', 'alnum'),
-            array('abcde', 'alpha'),
-            array("\n\r\t", 'cntrl'),
-            array('arf12', 'graph'),
-            array('abcde', 'lower'),
-            array('ABCDE', 'upper'),
-            array('arf12', 'print'),
-            array('*&$()', 'punct'),
-            array("\n\r\t", 'space'),
-            array('AB10BC99', 'xdigit'),
-        );
+        return [
+            [true, 'Boolean'],
+            [false, 'Boolean'],
+            [true, 'boolean'],
+            [false, 'boolean'],
+            [true, 'bool'],
+            [false, 'bool'],
+            [0, 'numeric'],
+            ['0', 'numeric'],
+            [1.5, 'numeric'],
+            ['1.5', 'numeric'],
+            [0, 'integer'],
+            [1.5, 'float'],
+            ['12345', 'string'],
+            [[], 'array'],
+            [$object, 'object'],
+            [$object, 'stdClass'],
+            [$file, 'resource'],
+            ['12345', 'digit'],
+            ['12a34', 'alnum'],
+            ['abcde', 'alpha'],
+            ["\n\r\t", 'cntrl'],
+            ['arf12', 'graph'],
+            ['abcde', 'lower'],
+            ['ABCDE', 'upper'],
+            ['arf12', 'print'],
+            ['*&$()', 'punct'],
+            ["\n\r\t", 'space'],
+            ['AB10BC99', 'xdigit'],
+        ];
     }
 
     /**
@@ -112,10 +112,10 @@ public function getValidValues()
      */
     public function testInvalidValues($value, $type, $valueAsString)
     {
-        $constraint = new Type(array(
+        $constraint = new Type([
             'type' => $type,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($value, $constraint);
 
@@ -131,36 +131,36 @@ public function getInvalidValues()
         $object = new \stdClass();
         $file = $this->createFile();
 
-        return array(
-            array('foobar', 'numeric', '"foobar"'),
-            array('foobar', 'boolean', '"foobar"'),
-            array('0', 'integer', '"0"'),
-            array('1.5', 'float', '"1.5"'),
-            array(12345, 'string', '12345'),
-            array($object, 'boolean', 'object'),
-            array($object, 'numeric', 'object'),
-            array($object, 'integer', 'object'),
-            array($object, 'float', 'object'),
-            array($object, 'string', 'object'),
-            array($object, 'resource', 'object'),
-            array($file, 'boolean', 'resource'),
-            array($file, 'numeric', 'resource'),
-            array($file, 'integer', 'resource'),
-            array($file, 'float', 'resource'),
-            array($file, 'string', 'resource'),
-            array($file, 'object', 'resource'),
-            array('12a34', 'digit', '"12a34"'),
-            array('1a#23', 'alnum', '"1a#23"'),
-            array('abcd1', 'alpha', '"abcd1"'),
-            array("\nabc", 'cntrl', "\"\nabc\""),
-            array("abc\n", 'graph', "\"abc\n\""),
-            array('abCDE', 'lower', '"abCDE"'),
-            array('ABcde', 'upper', '"ABcde"'),
-            array("\nabc", 'print', "\"\nabc\""),
-            array('abc&$!', 'punct', '"abc&$!"'),
-            array("\nabc", 'space', "\"\nabc\""),
-            array('AR1012', 'xdigit', '"AR1012"'),
-        );
+        return [
+            ['foobar', 'numeric', '"foobar"'],
+            ['foobar', 'boolean', '"foobar"'],
+            ['0', 'integer', '"0"'],
+            ['1.5', 'float', '"1.5"'],
+            [12345, 'string', '12345'],
+            [$object, 'boolean', 'object'],
+            [$object, 'numeric', 'object'],
+            [$object, 'integer', 'object'],
+            [$object, 'float', 'object'],
+            [$object, 'string', 'object'],
+            [$object, 'resource', 'object'],
+            [$file, 'boolean', 'resource'],
+            [$file, 'numeric', 'resource'],
+            [$file, 'integer', 'resource'],
+            [$file, 'float', 'resource'],
+            [$file, 'string', 'resource'],
+            [$file, 'object', 'resource'],
+            ['12a34', 'digit', '"12a34"'],
+            ['1a#23', 'alnum', '"1a#23"'],
+            ['abcd1', 'alpha', '"abcd1"'],
+            ["\nabc", 'cntrl', "\"\nabc\""],
+            ["abc\n", 'graph', "\"abc\n\""],
+            ['abCDE', 'lower', '"abCDE"'],
+            ['ABcde', 'upper', '"ABcde"'],
+            ["\nabc", 'print', "\"\nabc\""],
+            ['abc&$!', 'punct', '"abc&$!"'],
+            ["\nabc", 'space', "\"\nabc\""],
+            ['AR1012', 'xdigit', '"AR1012"'],
+        ];
     }
 
     protected function createFile()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
index 13cacb0f3ba5..bd1c9a3e09f9 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
@@ -67,67 +67,67 @@ public function testValidUrls($url)
 
     public function getValidUrls()
     {
-        return array(
-            array('http://a.pl'),
-            array('http://www.google.com'),
-            array('http://www.google.com.'),
-            array('http://www.google.museum'),
-            array('https://google.com/'),
-            array('https://google.com:80/'),
-            array('http://www.example.coop/'),
-            array('http://www.test-example.com/'),
-            array('http://www.symfony.com/'),
-            array('http://symfony.fake/blog/'),
-            array('http://symfony.com/?'),
-            array('http://symfony.com/search?type=&q=url+validator'),
-            array('http://symfony.com/#'),
-            array('http://symfony.com/#?'),
-            array('http://www.symfony.com/doc/current/book/validation.html#supported-constraints'),
-            array('http://very.long.domain.name.com/'),
-            array('http://localhost/'),
-            array('http://myhost123/'),
-            array('http://127.0.0.1/'),
-            array('http://127.0.0.1:80/'),
-            array('http://[::1]/'),
-            array('http://[::1]:80/'),
-            array('http://[1:2:3::4:5:6:7]/'),
-            array('http://sãopaulo.com/'),
-            array('http://xn--sopaulo-xwa.com/'),
-            array('http://sãopaulo.com.br/'),
-            array('http://xn--sopaulo-xwa.com.br/'),
-            array('http://пример.испытание/'),
-            array('http://xn--e1afmkfd.xn--80akhbyknj4f/'),
-            array('http://مثال.إختبار/'),
-            array('http://xn--mgbh0fb.xn--kgbechtv/'),
-            array('http://例子.测试/'),
-            array('http://xn--fsqu00a.xn--0zwm56d/'),
-            array('http://例子.測試/'),
-            array('http://xn--fsqu00a.xn--g6w251d/'),
-            array('http://例え.テスト/'),
-            array('http://xn--r8jz45g.xn--zckzah/'),
-            array('http://مثال.آزمایشی/'),
-            array('http://xn--mgbh0fb.xn--hgbk6aj7f53bba/'),
-            array('http://실례.테스트/'),
-            array('http://xn--9n2bp8q.xn--9t4b11yi5a/'),
-            array('http://العربية.idn.icann.org/'),
-            array('http://xn--ogb.idn.icann.org/'),
-            array('http://xn--e1afmkfd.xn--80akhbyknj4f.xn--e1afmkfd/'),
-            array('http://xn--espaa-rta.xn--ca-ol-fsay5a/'),
-            array('http://xn--d1abbgf6aiiy.xn--p1ai/'),
-            array('http://☎.com/'),
-            array('http://username:password@symfony.com'),
-            array('http://user.name:password@symfony.com'),
-            array('http://username:pass.word@symfony.com'),
-            array('http://user.name:pass.word@symfony.com'),
-            array('http://user-name@symfony.com'),
-            array('http://symfony.com?'),
-            array('http://symfony.com?query=1'),
-            array('http://symfony.com/?query=1'),
-            array('http://symfony.com#'),
-            array('http://symfony.com#fragment'),
-            array('http://symfony.com/#fragment'),
-            array('http://symfony.com/#one_more%20test'),
-        );
+        return [
+            ['http://a.pl'],
+            ['http://www.google.com'],
+            ['http://www.google.com.'],
+            ['http://www.google.museum'],
+            ['https://google.com/'],
+            ['https://google.com:80/'],
+            ['http://www.example.coop/'],
+            ['http://www.test-example.com/'],
+            ['http://www.symfony.com/'],
+            ['http://symfony.fake/blog/'],
+            ['http://symfony.com/?'],
+            ['http://symfony.com/search?type=&q=url+validator'],
+            ['http://symfony.com/#'],
+            ['http://symfony.com/#?'],
+            ['http://www.symfony.com/doc/current/book/validation.html#supported-constraints'],
+            ['http://very.long.domain.name.com/'],
+            ['http://localhost/'],
+            ['http://myhost123/'],
+            ['http://127.0.0.1/'],
+            ['http://127.0.0.1:80/'],
+            ['http://[::1]/'],
+            ['http://[::1]:80/'],
+            ['http://[1:2:3::4:5:6:7]/'],
+            ['http://sãopaulo.com/'],
+            ['http://xn--sopaulo-xwa.com/'],
+            ['http://sãopaulo.com.br/'],
+            ['http://xn--sopaulo-xwa.com.br/'],
+            ['http://пример.испытание/'],
+            ['http://xn--e1afmkfd.xn--80akhbyknj4f/'],
+            ['http://مثال.إختبار/'],
+            ['http://xn--mgbh0fb.xn--kgbechtv/'],
+            ['http://例子.测试/'],
+            ['http://xn--fsqu00a.xn--0zwm56d/'],
+            ['http://例子.測試/'],
+            ['http://xn--fsqu00a.xn--g6w251d/'],
+            ['http://例え.テスト/'],
+            ['http://xn--r8jz45g.xn--zckzah/'],
+            ['http://مثال.آزمایشی/'],
+            ['http://xn--mgbh0fb.xn--hgbk6aj7f53bba/'],
+            ['http://실례.테스트/'],
+            ['http://xn--9n2bp8q.xn--9t4b11yi5a/'],
+            ['http://العربية.idn.icann.org/'],
+            ['http://xn--ogb.idn.icann.org/'],
+            ['http://xn--e1afmkfd.xn--80akhbyknj4f.xn--e1afmkfd/'],
+            ['http://xn--espaa-rta.xn--ca-ol-fsay5a/'],
+            ['http://xn--d1abbgf6aiiy.xn--p1ai/'],
+            ['http://☎.com/'],
+            ['http://username:password@symfony.com'],
+            ['http://user.name:password@symfony.com'],
+            ['http://username:pass.word@symfony.com'],
+            ['http://user.name:pass.word@symfony.com'],
+            ['http://user-name@symfony.com'],
+            ['http://symfony.com?'],
+            ['http://symfony.com?query=1'],
+            ['http://symfony.com/?query=1'],
+            ['http://symfony.com#'],
+            ['http://symfony.com#fragment'],
+            ['http://symfony.com/#fragment'],
+            ['http://symfony.com/#one_more%20test'],
+        ];
     }
 
     /**
@@ -135,9 +135,9 @@ public function getValidUrls()
      */
     public function testInvalidUrls($url)
     {
-        $constraint = new Url(array(
+        $constraint = new Url([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($url, $constraint);
 
@@ -149,29 +149,29 @@ public function testInvalidUrls($url)
 
     public function getInvalidUrls()
     {
-        return array(
-            array('google.com'),
-            array('://google.com'),
-            array('http ://google.com'),
-            array('http:/google.com'),
-            array('http://goog_le.com'),
-            array('http://google.com::aa'),
-            array('http://google.com:aa'),
-            array('ftp://google.fr'),
-            array('faked://google.fr'),
-            array('http://127.0.0.1:aa/'),
-            array('ftp://[::1]/'),
-            array('http://[::1'),
-            array('http://hello.☎/'),
-            array('http://:password@symfony.com'),
-            array('http://:password@@symfony.com'),
-            array('http://username:passwordsymfony.com'),
-            array('http://usern@me:password@symfony.com'),
-            array('http://example.com/exploit.html?<script>alert(1);</script>'),
-            array('http://example.com/exploit.html?hel lo'),
-            array('http://example.com/exploit.html?not_a%hex'),
-            array('http://'),
-        );
+        return [
+            ['google.com'],
+            ['://google.com'],
+            ['http ://google.com'],
+            ['http:/google.com'],
+            ['http://goog_le.com'],
+            ['http://google.com::aa'],
+            ['http://google.com:aa'],
+            ['ftp://google.fr'],
+            ['faked://google.fr'],
+            ['http://127.0.0.1:aa/'],
+            ['ftp://[::1]/'],
+            ['http://[::1'],
+            ['http://hello.☎/'],
+            ['http://:password@symfony.com'],
+            ['http://:password@@symfony.com'],
+            ['http://username:passwordsymfony.com'],
+            ['http://usern@me:password@symfony.com'],
+            ['http://example.com/exploit.html?<script>alert(1);</script>'],
+            ['http://example.com/exploit.html?hel lo'],
+            ['http://example.com/exploit.html?not_a%hex'],
+            ['http://'],
+        ];
     }
 
     /**
@@ -179,9 +179,9 @@ public function getInvalidUrls()
      */
     public function testCustomProtocolIsValid($url)
     {
-        $constraint = new Url(array(
-            'protocols' => array('ftp', 'file', 'git'),
-        ));
+        $constraint = new Url([
+            'protocols' => ['ftp', 'file', 'git'],
+        ]);
 
         $this->validator->validate($url, $constraint);
 
@@ -190,11 +190,11 @@ public function testCustomProtocolIsValid($url)
 
     public function getValidCustomUrls()
     {
-        return array(
-            array('ftp://google.com'),
-            array('file://127.0.0.1'),
-            array('git://[::1]/'),
-        );
+        return [
+            ['ftp://google.com'],
+            ['file://127.0.0.1'],
+            ['git://[::1]/'],
+        ];
     }
 
     /**
@@ -203,12 +203,12 @@ public function getValidCustomUrls()
      */
     public function testCheckDns($violation)
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => $violation ? '' : 'A'))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => $violation ? '' : 'A']]]);
 
-        $constraint = new Url(array(
+        $constraint = new Url([
             'checkDNS' => 'ANY',
             'dnsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('http://example.com', $constraint);
 
@@ -224,7 +224,7 @@ public function testCheckDns($violation)
 
     public function getCheckDns()
     {
-        return array(array(true), array(false));
+        return [[true], [false]];
     }
 
     /**
@@ -233,12 +233,12 @@ public function getCheckDns()
      */
     public function testCheckDnsByType($type)
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => $type))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => $type]]]);
 
-        $constraint = new Url(array(
+        $constraint = new Url([
             'checkDNS' => $type,
             'dnsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('http://example.com', $constraint);
 
@@ -247,20 +247,20 @@ public function testCheckDnsByType($type)
 
     public function getCheckDnsTypes()
     {
-        return array(
-            array('ANY'),
-            array('A'),
-            array('A6'),
-            array('AAAA'),
-            array('CNAME'),
-            array('MX'),
-            array('NAPTR'),
-            array('NS'),
-            array('PTR'),
-            array('SOA'),
-            array('SRV'),
-            array('TXT'),
-        );
+        return [
+            ['ANY'],
+            ['A'],
+            ['A6'],
+            ['AAAA'],
+            ['CNAME'],
+            ['MX'],
+            ['NAPTR'],
+            ['NS'],
+            ['PTR'],
+            ['SOA'],
+            ['SRV'],
+            ['TXT'],
+        ];
     }
 
     /**
@@ -268,12 +268,12 @@ public function getCheckDnsTypes()
      */
     public function testCheckDnsWithBoolean()
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => 'A'))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => 'A']]]);
 
-        $constraint = new Url(array(
+        $constraint = new Url([
             'checkDNS' => true,
             'dnsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('http://example.com', $constraint);
 
@@ -286,12 +286,12 @@ public function testCheckDnsWithBoolean()
      */
     public function testCheckDnsWithInvalidType()
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => 'A'))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => 'A']]]);
 
-        $constraint = new Url(array(
+        $constraint = new Url([
             'checkDNS' => 'BOGUS',
             'dnsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('http://example.com', $constraint);
     }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/UuidValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/UuidValidatorTest.php
index a39ec93d6cdf..6c379b9430fb 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/UuidValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/UuidValidatorTest.php
@@ -75,14 +75,14 @@ public function testValidStrictUuids($uuid, $versions = null)
 
     public function getValidStrictUuids()
     {
-        return array(
-            array('216fff40-98d9-11e3-a5e2-0800200c9a66'), // Version 1 UUID in lowercase
-            array('216fff40-98d9-11e3-a5e2-0800200c9a66', array(Uuid::V1_MAC)),
-            array('216FFF40-98D9-11E3-A5E2-0800200C9A66'), // Version 1 UUID in UPPERCASE
-            array('456daefb-5aa6-41b5-8dbc-068b05a8b201'), // Version 4 UUID in lowercase
-            array('456daEFb-5AA6-41B5-8DBC-068B05A8B201'), // Version 4 UUID in mixed case
-            array('456daEFb-5AA6-41B5-8DBC-068B05A8B201', array(Uuid::V4_RANDOM)),
-        );
+        return [
+            ['216fff40-98d9-11e3-a5e2-0800200c9a66'], // Version 1 UUID in lowercase
+            ['216fff40-98d9-11e3-a5e2-0800200c9a66', [Uuid::V1_MAC]],
+            ['216FFF40-98D9-11E3-A5E2-0800200C9A66'], // Version 1 UUID in UPPERCASE
+            ['456daefb-5aa6-41b5-8dbc-068b05a8b201'], // Version 4 UUID in lowercase
+            ['456daEFb-5AA6-41B5-8DBC-068B05A8B201'], // Version 4 UUID in mixed case
+            ['456daEFb-5AA6-41B5-8DBC-068B05A8B201', [Uuid::V4_RANDOM]],
+        ];
     }
 
     /**
@@ -90,9 +90,9 @@ public function getValidStrictUuids()
      */
     public function testInvalidStrictUuids($uuid, $code, $versions = null)
     {
-        $constraint = new Uuid(array(
+        $constraint = new Uuid([
             'message' => 'testMessage',
-        ));
+        ]);
 
         if (null !== $versions) {
             $constraint->versions = $versions;
@@ -108,48 +108,48 @@ public function testInvalidStrictUuids($uuid, $code, $versions = null)
 
     public function getInvalidStrictUuids()
     {
-        return array(
-            array('216fff40-98d9-11e3-a5e2_0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR),
-            array('216gff40-98d9-11e3-a5e2-0800200c9a66',
10000
 Uuid::INVALID_CHARACTERS_ERROR),
-            array('216Gff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR),
-            array('216fff40-98d9-11e3-a5e-20800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR),
-            array('216f-ff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR),
-            array('216fff40-98d9-11e3-a5e2-0800-200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR),
-            array('216fff40-98d9-11e3-a5e2-0800200c-9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR),
-            array('216fff40-98d9-11e3-a5e20800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR),
-            array('216fff4098d911e3a5e20800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR),
-            array('216fff40-98d9-11e3-a5e2-0800200c9a6', Uuid::TOO_SHORT_ERROR),
-            array('216fff40-98d9-11e3-a5e2-0800200c9a666', Uuid::TOO_LONG_ERROR),
-            array('216fff40-98d9-01e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-61e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-71e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-81e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-91e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-a1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-b1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-c1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-d1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-e1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-f1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR),
-            array('216fff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR, array(Uuid::V2_DCE, Uuid::V3_MD5, Uuid::V4_RANDOM, Uuid::V5_SHA1)),
-            array('216fff40-98d9-21e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR, array(Uuid::V1_MAC, Uuid::V3_MD5, Uuid::V4_RANDOM, Uuid::V5_SHA1)),
-            array('216fff40-98d9-11e3-05e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-15e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-25e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-35e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-45e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-55e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-65e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-75e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-c5e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-d5e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-e5e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
-            array('216fff40-98d9-11e3-f5e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR),
+        return [
+            ['216fff40-98d9-11e3-a5e2_0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR],
+            ['216gff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR],
+            ['216Gff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR],
+            ['216fff40-98d9-11e3-a5e-20800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR],
+            ['216f-ff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR],
+            ['216fff40-98d9-11e3-a5e2-0800-200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR],
+            ['216fff40-98d9-11e3-a5e2-0800200c-9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR],
+            ['216fff40-98d9-11e3-a5e20800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR],
+            ['216fff4098d911e3a5e20800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR],
+            ['216fff40-98d9-11e3-a5e2-0800200c9a6', Uuid::TOO_SHORT_ERROR],
+            ['216fff40-98d9-11e3-a5e2-0800200c9a666', Uuid::TOO_LONG_ERROR],
+            ['216fff40-98d9-01e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-61e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-71e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-81e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-91e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-a1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-b1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-c1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-d1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-e1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-f1e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR],
+            ['216fff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR, [Uuid::V2_DCE, Uuid::V3_MD5, Uuid::V4_RANDOM, Uuid::V5_SHA1]],
+            ['216fff40-98d9-21e3-a5e2-0800200c9a66', Uuid::INVALID_VERSION_ERROR, [Uuid::V1_MAC, Uuid::V3_MD5, Uuid::V4_RANDOM, Uuid::V5_SHA1]],
+            ['216fff40-98d9-11e3-05e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-15e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-25e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-35e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-45e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-55e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-65e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-75e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-c5e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-d5e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-e5e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
+            ['216fff40-98d9-11e3-f5e2-0800200c9a66', Uuid::INVALID_VARIANT_ERROR],
 
             // Non-standard UUID allowed by some other systems
-            array('{216fff40-98d9-11e3-a5e2-0800200c9a66}', Uuid::INVALID_CHARACTERS_ERROR),
-            array('[216fff40-98d9-11e3-a5e2-0800200c9a66]', Uuid::INVALID_CHARACTERS_ERROR),
-        );
+            ['{216fff40-98d9-11e3-a5e2-0800200c9a66}', Uuid::INVALID_CHARACTERS_ERROR],
+            ['[216fff40-98d9-11e3-a5e2-0800200c9a66]', Uuid::INVALID_CHARACTERS_ERROR],
+        ];
     }
 
     /**
@@ -157,9 +157,9 @@ public function getInvalidStrictUuids()
      */
     public function testValidNonStrictUuids($uuid)
     {
-        $constraint = new Uuid(array(
+        $constraint = new Uuid([
             'strict' => false,
-        ));
+        ]);
 
         $this->validator->validate($uuid, $constraint);
 
@@ -168,19 +168,19 @@ public function testValidNonStrictUuids($uuid)
 
     public function getValidNonStrictUuids()
     {
-        return array(
-            array('216fff40-98d9-11e3-a5e2-0800200c9a66'),    // Version 1 UUID in lowercase
-            array('216FFF40-98D9-11E3-A5E2-0800200C9A66'),    // Version 1 UUID in UPPERCASE
-            array('456daefb-5aa6-41b5-8dbc-068b05a8b201'),    // Version 4 UUID in lowercase
-            array('456DAEFb-5AA6-41B5-8DBC-068b05a8B201'),    // Version 4 UUID in mixed case
+        return [
+            ['216fff40-98d9-11e3-a5e2-0800200c9a66'],    // Version 1 UUID in lowercase
+            ['216FFF40-98D9-11E3-A5E2-0800200C9A66'],    // Version 1 UUID in UPPERCASE
+            ['456daefb-5aa6-41b5-8dbc-068b05a8b201'],    // Version 4 UUID in lowercase
+            ['456DAEFb-5AA6-41B5-8DBC-068b05a8B201'],    // Version 4 UUID in mixed case
 
             // Non-standard UUIDs allowed by some other systems
-            array('216f-ff40-98d9-11e3-a5e2-0800-200c-9a66'), // Non-standard dash positions (every 4 chars)
-            array('216fff40-98d911e3-a5e20800-200c9a66'),     // Non-standard dash positions (every 8 chars)
-            array('216fff4098d911e3a5e20800200c9a66'),        // No dashes at all
-            array('{216fff40-98d9-11e3-a5e2-0800200c9a66}'),  // Wrapped with curly braces
-            array('[216fff40-98d9-11e3-a5e2-0800200c9a66]'),  // Wrapped with squared braces
-        );
+            ['216f-ff40-98d9-11e3-a5e2-0800-200c-9a66'], // Non-standard dash positions (every 4 chars)
+            ['216fff40-98d911e3-a5e20800-200c9a66'],     // Non-standard dash positions (every 8 chars)
+            ['216fff4098d911e3a5e20800200c9a66'],        // No dashes at all
+            ['{216fff40-98d9-11e3-a5e2-0800200c9a66}'],  // Wrapped with curly braces
+            ['[216fff40-98d9-11e3-a5e2-0800200c9a66]'],  // Wrapped with squared braces
+        ];
     }
 
     /**
@@ -188,10 +188,10 @@ public function getValidNonStrictUuids()
      */
     public function testInvalidNonStrictUuids($uuid, $code)
     {
-        $constraint = new Uuid(array(
+        $constraint = new Uuid([
             'strict' => false,
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($uuid, $constraint);
 
@@ -203,14 +203,14 @@ public function testInvalidNonStrictUuids($uuid, $code)
 
     public function getInvalidNonStrictUuids()
     {
-        return array(
-            array('216fff40-98d9-11e3-a5e2_0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR),
-            array('216gff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR),
-            array('216Gff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR),
-            array('216fff40-98d9-11e3-a5e2_0800200c9a6', Uuid::INVALID_CHARACTERS_ERROR),
-            array('216fff40-98d9-11e3-a5e-20800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR),
-            array('216fff40-98d9-11e3-a5e2-0800200c9a6', Uuid::TOO_SHORT_ERROR),
-            array('216fff40-98d9-11e3-a5e2-0800200c9a666', Uuid::TOO_LONG_ERROR),
-        );
+        return [
+            ['216fff40-98d9-11e3-a5e2_0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR],
+            ['216gff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR],
+            ['216Gff40-98d9-11e3-a5e2-0800200c9a66', Uuid::INVALID_CHARACTERS_ERROR],
+            ['216fff40-98d9-11e3-a5e2_0800200c9a6', Uuid::INVALID_CHARACTERS_ERROR],
+            ['216fff40-98d9-11e3-a5e-20800200c9a66', Uuid::INVALID_HYPHEN_PLACEMENT_ERROR],
+            ['216fff40-98d9-11e3-a5e2-0800200c9a6', Uuid::TOO_SHORT_ERROR],
+            ['216fff40-98d9-11e3-a5e2-0800200c9a666', Uuid::TOO_LONG_ERROR],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ValidTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ValidTest.php
index 9928bd82d022..7245dc90aded 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ValidTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ValidTest.php
@@ -21,9 +21,9 @@ class ValidTest extends TestCase
 {
     public function testGroupsCanBeSet()
     {
-        $constraint = new Valid(array('groups' => 'foo'));
+        $constraint = new Valid(['groups' => 'foo']);
 
-        $this->assertSame(array('foo'), $constraint->groups);
+        $this->assertSame(['foo'], $constraint->groups);
     }
 
     public function testGroupsAreNullByDefault()
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ValidValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ValidValidatorTest.php
index c4ccf1551f2a..0ec1d421378e 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ValidValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ValidValidatorTest.php
@@ -14,7 +14,7 @@ public function testPropertyPathsArePassedToNestedContexts()
         $validatorBuilder = new ValidatorBuilder();
         $validator = $validatorBuilder->enableAnnotationMapping()->getValidator();
 
-        $violations = $validator->validate(new Foo(), null, array('nested'));
+        $violations = $validator->validate(new Foo(), null, ['nested']);
 
         $this->assertCount(1, $violations);
         $this->assertSame('fooBar.fooBarBaz.foo', $violations->get(0)->getPropertyPath());
@@ -27,7 +27,7 @@ public function testNullValues()
 
         $foo = new Foo();
         $foo->fooBar = null;
-        $violations = $validator->validate($foo, null, array('nested'));
+        $violations = $validator->validate($foo, null, ['nested']);
 
         $this->assertCount(0, $violations);
     }
diff --git a/src/Symfony/Component/Validator/Tests/DataCollector/ValidatorDataCollectorTest.php b/src/Symfony/Component/Validator/Tests/DataCollector/ValidatorDataCollectorTest.php
index b28650c30e1d..f32acf228bcc 100644
--- a/src/Symfony/Component/Validator/Tests/DataCollector/ValidatorDataCollectorTest.php
+++ b/src/Symfony/Component/Validator/Tests/DataCollector/ValidatorDataCollectorTest.php
@@ -27,10 +27,10 @@ public function testCollectsValidatorCalls()
 
         $collector = new ValidatorDataCollector($validator);
 
-        $violations = new ConstraintViolationList(array(
+        $violations = new ConstraintViolationList([
             $this->createMock(ConstraintViolation::class),
             $this->createMock(ConstraintViolation::class),
-        ));
+        ]);
         $originalValidator->method('validate')->willReturn($violations);
 
         $validator->validate(new \stdClass());
@@ -57,10 +57,10 @@ public function testReset()
 
         $collector = new ValidatorDataCollector($validator);
 
-        $violations = new ConstraintViolationList(array(
+        $violations = new ConstraintViolationList([
             $this->createMock(ConstraintViolation::class),
             $this->createMock(ConstraintViolation::class),
-        ));
+        ]);
         $originalValidator->method('validate')->willReturn($violations);
 
         $validator->validate(new \stdClass());
diff --git a/src/Symfony/Component/Validator/Tests/DependencyInjection/AddConstraintValidatorsPassTest.php b/src/Symfony/Component/Validator/Tests/DependencyInjection/AddConstraintValidatorsPassTest.php
index c47cbcc94da9..c3224840bb2d 100644
--- a/src/Symfony/Component/Validator/Tests/DependencyInjection/AddConstraintValidatorsPassTest.php
+++ b/src/Symfony/Component/Validator/Tests/DependencyInjection/AddConstraintValidatorsPassTest.php
@@ -25,21 +25,21 @@ public function testThatConstraintValidatorServicesAreProcessed()
     {
         $container = new ContainerBuilder();
         $validatorFactory = $container->register('validator.validator_factory')
-            ->addArgument(array());
+            ->addArgument([]);
 
         $container->register('my_constraint_validator_service1', Validator1::class)
-            ->addTag('validator.constraint_validator', array('alias' => 'my_constraint_validator_alias1'));
+            ->addTag('validator.constraint_validator', ['alias' => 'my_constraint_validator_alias1']);
         $container->register('my_constraint_validator_service2', Validator2::class)
             ->addTag('validator.constraint_validator');
 
         $addConstraintValidatorsPass = new AddConstraintValidatorsPass();
         $addConstraintValidatorsPass->process($container);
 
-        $expected = (new Definition(ServiceLocator::class, array(array(
+        $expected = (new Definition(ServiceLocator::class, [[
             Validator1::class => new ServiceClosureArgument(new Reference('my_constraint_validator_service1')),
             'my_constraint_validator_alias1' => new ServiceClosureArgument(new Reference('my_constraint_validator_service1')),
             Validator2::class => new ServiceClosureArgument(new Reference('my_constraint_validator_service2')),
-        ))))->addTag('container.service_locator')->setPublic(false);
+        ]]))->addTag('container.service_locator')->setPublic(false);
         $this->assertEquals($expected, $container->getDefinition((string) $validatorFactory->getArgument(0)));
     }
 
@@ -51,7 +51,7 @@ public function testAbstractConstraintValidator()
     {
         $container = new ContainerBuilder();
         $container->register('validator.validator_factory')
-            ->addArgument(array());
+            ->addArgument([]);
 
         $container->register('my_abstract_constraint_validator')
             ->setAbstract(true)
diff --git a/src/Symfony/Component/Validator/Tests/DependencyInjection/AddValidatorInitializersPassTest.php b/src/Symfony/Component/Validator/Tests/DependencyInjection/AddValidatorInitializersPassTest.php
index 61c13d25e75d..8d87b635ea0b 100644
--- a/src/Symfony/Component/Validator/Tests/DependencyInjection/AddValidatorInitializersPassTest.php
+++ b/src/Symfony/Component/Validator/Tests/DependencyInjection/AddValidatorInitializersPassTest.php
@@ -31,13 +31,13 @@ public function testProcess()
         ;
         $container
             ->register('validator.builder')
-            ->addArgument(array())
+            ->addArgument([])
         ;
 
         (new AddValidatorInitializersPass())->process($container);
 
         $this->assertEquals(
-            array(array('addObjectInitializers', array(array(new Reference('initializer1'), new Reference('initializer2'))))),
+            [['addObjectInitializers', [[new Reference('initializer1'), new Reference('initializer2')]]]],
             $container->getDefinition('validator.builder')->getMethodCalls()
         );
     }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintA.php b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintA.php
index 8a196dcc914e..17ba03673d5d 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintA.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintA.php
@@ -26,6 +26,6 @@ public function getDefaultOption()
 
     public function getTargets()
     {
-        return array(self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT);
+        return [self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php
index 867b024c2767..8b0d30f57142 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php
@@ -29,7 +29,7 @@ public function initialize(ExecutionContextInterface $context)
     public function validate($value, Constraint $constraint)
     {
         if ('VALID' != $value) {
-            $this->context->addViolation('message', array('param' => 'value'));
+            $this->context->addViolation('message', ['param' => 'value']);
 
             return;
         }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintB.php b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintB.php
index 6258923372ed..99d1951e5d0c 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintB.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintB.php
@@ -18,6 +18,6 @@ class ConstraintB extends Constraint
 {
     public function getTargets()
     {
-        return array(self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT);
+        return [self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintC.php b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintC.php
index b0418b871869..675066ef020f 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintC.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintC.php
@@ -20,11 +20,11 @@ class ConstraintC extends Constraint
 
     public function getRequiredOptions()
     {
-        return array('option1');
+        return ['option1'];
     }
 
     public function getTargets()
     {
-        return array(self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT);
+        return [self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintWithValue.php b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintWithValue.php
index 4ebd981eef92..b3fbd7083cfd 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintWithValue.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintWithValue.php
@@ -26,6 +26,6 @@ public function getDefaultOption()
 
     public function getTargets()
     {
-        return array(self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT);
+        return [self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintWithValueAsDefault.php b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintWithValueAsDefault.php
index a975e0787fc9..618cca74df04 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintWithValueAsDefault.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintWithValueAsDefault.php
@@ -26,6 +26,6 @@ public function getDefaultOption()
 
     public function getTargets()
     {
-        return array(self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT);
+        return [self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/CustomArrayObject.php b/src/Symfony/Component/Validator/Tests/Fixtures/CustomArrayObject.php
index feb25318eb5e..ac48a512c629 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/CustomArrayObject.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/CustomArrayObject.php
@@ -21,7 +21,7 @@ class CustomArrayObject implements \ArrayAccess, \IteratorAggregate, \Countable,
 
     public function __construct(array $array = null)
     {
-        $this->array = $array ?: array();
+        $this->array = $array ?: [];
     }
 
     public function offsetExists($offset)
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCar.php b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCar.php
index 0b384872db59..af90ddc7473a 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCar.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCar.php
@@ -18,6 +18,6 @@ class EntityStaticCar extends EntityStaticVehicle
 {
     public static function loadValidatorMetadata(ClassMetadata $metadata)
     {
-        $metadata->addPropertyConstraint('wheels', new Length(array('max' => 99)));
+        $metadata->addPropertyConstraint('wheels', new Length(['max' => 99]));
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCarTurbo.php b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCarTurbo.php
index abf1edbdd132..d559074db645 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCarTurbo.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCarTurbo.php
@@ -18,6 +18,6 @@ class EntityStaticCarTurbo extends EntityStaticCar
 {
     public static function loadValidatorMetadata(ClassMetadata $metadata)
     {
-        $metadata->addPropertyConstraint('wheels', new Length(array('max' => 99)));
+        $metadata->addPropertyConstraint('wheels', new Length(['max' => 99]));
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticVehicle.php b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticVehicle.php
index 9ce72935de51..1190318fa555 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticVehicle.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticVehicle.php
@@ -20,6 +20,6 @@ class EntityStaticVehicle
 
     public static function loadValidatorMetadata(ClassMetadata $metadata)
     {
-        $metadata->addPropertyConstraint('wheels', new Length(array('max' => 99)));
+        $metadata->addPropertyConstraint('wheels', new Length(['max' => 99]));
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraint.php b/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraint.php
index 03019fc37ca3..4ea07f743634 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraint.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraint.php
@@ -19,6 +19,6 @@ class FailingConstraint extends Constraint
 
     public function getTargets()
     {
-        return array(self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT);
+        return [self::PROPERTY_CONSTRAINT, self::CLASS_CONSTRAINT];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraintValidator.php b/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraintValidator.php
index a019dd6f836c..122464385111 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraintValidator.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/FailingConstraintValidator.php
@@ -18,6 +18,6 @@ class FailingConstraintValidator extends ConstraintValidator
 {
     public function validate($value, Constraint $constraint)
     {
-        $this->context->addViolation($constraint->message, array());
+        $this->context->addViolation($constraint->message, []);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/FakeClassMetadata.php b/src/Symfony/Component/Validator/Tests/Fixtures/FakeClassMetadata.php
index 8c76a21598c0..39f54777795c 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/FakeClassMetadata.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/FakeClassMetadata.php
@@ -18,7 +18,7 @@ class FakeClassMetadata extends ClassMetadata
     public function addCustomPropertyMetadata($propertyName, $metadata)
     {
         if (!isset($this->members[$propertyName])) {
-            $this->members[$propertyName] = array();
+            $this->members[$propertyName] = [];
         }
 
         $this->members[$propertyName][] = $metadata;
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/FakeMetadataFactory.php b/src/Symfony/Component/Validator/Tests/Fixtures/FakeMetadataFactory.php
index 1b5a704d4680..5e34929be35e 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/FakeMetadataFactory.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/FakeMetadataFactory.php
@@ -17,7 +17,7 @@
 
 class FakeMetadataFactory implements MetadataFactoryInterface
 {
-    protected $metadatas = array();
+    protected $metadatas = [];
 
     public function getMetadataFor($class)
     {
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/GroupSequenceProviderEntity.php b/src/Symfony/Component/Validator/Tests/Fixtures/GroupSequenceProviderEntity.php
index 2b0beaf9adf9..77b3bf2f7b45 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/GroupSequenceProviderEntity.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/GroupSequenceProviderEntity.php
@@ -22,7 +22,7 @@ class GroupSequenceProviderEntity implements GroupSequenceProviderInterface
     public $firstName;
     public $lastName;
 
-    protected $sequence = array();
+    protected $sequence = [];
 
     public function __construct($sequence)
     {
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Cache/AbstractCacheTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Cache/AbstractCacheTest.php
index 6083f65e28b6..4d0363fd717b 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Cache/AbstractCacheTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Cache/AbstractCacheTest.php
@@ -26,7 +26,7 @@ public function testWrite()
     {
         $meta = $this->getMockBuilder(ClassMetadata::class)
             ->disableOriginalConstructor()
-            ->setMethods(array('getClassName'))
+            ->setMethods(['getClassName'])
             ->getMock();
 
         $meta->expects($this->once())
@@ -46,7 +46,7 @@ public function testHas()
     {
         $meta = $this->getMockBuilder(ClassMetadata::class)
             ->disableOriginalConstructor()
-            ->setMethods(array('getClassName'))
+            ->setMethods(['getClassName'])
             ->getMock();
 
         $meta->expects($this->once())
@@ -63,7 +63,7 @@ public function testRead()
     {
         $meta = $this->getMockBuilder(ClassMetadata::class)
             ->disableOriginalConstructor()
-            ->setMethods(array('getClassName'))
+            ->setMethods(['getClassName'])
             ->getMock();
 
         $meta->expects($this->once())
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/ClassMetadataTest.php b/src/Symfony/Component/Validator/Tests/Mapping/ClassMetadataTest.php
index a3f8a8c1ec8a..d33342c42557 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/ClassMetadataTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/ClassMetadataTest.php
@@ -57,17 +57,17 @@ public function testAddPropertyConstraints()
         $this->metadata->addPropertyConstraint('firstName', new ConstraintA());
         $this->metadata->addPropertyConstraint('lastName', new ConstraintB());
 
-        $this->assertEquals(array('firstName', 'lastName'), $this->metadata->getConstrainedProperties());
+        $this->assertEquals(['firstName', 'lastName'], $this->metadata->getConstrainedProperties());
     }
 
     public function testAddMultiplePropertyConstraints()
     {
-        $this->metadata->addPropertyConstraints('lastName', array(new ConstraintA(), new ConstraintB()));
+        $this->metadata->addPropertyConstraints('lastName', [new ConstraintA(), new ConstraintB()]);
 
-        $constraints = array(
-            new ConstraintA(array('groups' => array('Default', 'Entity'))),
-            new ConstraintB(array('groups' => array('Default', 'Entity'))),
-        );
+        $constraints = [
+            new ConstraintA(['groups' => ['Default', 'Entity']]),
+            new ConstraintB(['groups' => ['Default', 'Entity']]),
+        ];
 
         $properties = $this->metadata->getPropertyMetadata('lastName');
 
@@ -81,10 +81,10 @@ public function testAddGetterConstraints()
         $this->metadata->addGetterConstraint('lastName', new ConstraintA());
         $this->metadata->addGetterConstraint('lastName', new ConstraintB());
 
-        $constraints = array(
-            new ConstraintA(array('groups' => array('Default', 'Entity'))),
-            new ConstraintB(array('groups' => array('Default', 'Entity'))),
-        );
+        $constraints = [
+            new ConstraintA(['groups' => ['Default', 'Entity']]),
+            new ConstraintB(['groups' => ['Default', 'Entity']]),
+        ];
 
         $properties = $this->metadata->getPropertyMetadata('lastName');
 
@@ -95,12 +95,12 @@ public function testAddGetterConstraints()
 
     public function testAddMultipleGetterConstraints()
     {
-        $this->metadata->addGetterConstraints('lastName', array(new ConstraintA(), new ConstraintB()));
+        $this->metadata->addGetterConstraints('lastName', [new ConstraintA(), new ConstraintB()]);
 
-        $constraints = array(
-            new ConstraintA(array('groups' => array('Default', 'Entity'))),
-            new ConstraintB(array('groups' => array('Default', 'Entity'))),
-        );
+        $constraints = [
+            new ConstraintA(['groups' => ['Default', 'Entity']]),
+            new ConstraintB(['groups' => ['Default', 'Entity']]),
+        ];
 
         $properties = $this->metadata->getPropertyMetadata('lastName');
 
@@ -117,17 +117,17 @@ public function testMergeConstraintsMergesClassConstraints()
         $this->metadata->mergeConstraints($parent);
         $this->metadata->addConstraint(new ConstraintA());
 
-        $constraints = array(
-            new ConstraintA(array('groups' => array(
+        $constraints = [
+            new ConstraintA(['groups' => [
                 'Default',
                 'EntityParent',
                 'Entity',
-            ))),
-            new ConstraintA(array('groups' => array(
+            ]]),
+            new ConstraintA(['groups' => [
                 'Default',
                 'Entity',
-            ))),
-        );
+            ]]),
+        ];
 
         $this->assertEquals($constraints, $this->metadata->getConstraints());
     }
@@ -136,46 +136,46 @@ public function testMergeConstraintsMergesMemberConstraints()
     {
         $parent = new ClassMetadata(self::PARENTCLASS);
         $parent->addPropertyConstraint('firstName', new ConstraintA());
-        $parent->addPropertyConstraint('firstName', new ConstraintB(array('groups' => 'foo')));
+        $parent->addPropertyConstraint('firstName', new ConstraintB(['groups' => 'foo']));
 
         $this->metadata->mergeConstraints($parent);
         $this->metadata->addPropertyConstraint('firstName', new ConstraintA());
 
-        $constraintA1 = new ConstraintA(array('groups' => array(
+        $constraintA1 = new ConstraintA(['groups' => [
             'Default',
             'EntityParent',
             'Entity',
-        )));
-        $constraintA2 = new ConstraintA(array('groups' => array(
+        ]]);
+        $constraintA2 = new ConstraintA(['groups' => [
             'Default',
             'Entity',
-        )));
-        $constraintB = new ConstraintB(array(
-            'groups' => array('foo'),
-        ));
+        ]]);
+        $constraintB = new ConstraintB([
+            'groups' => ['foo'],
+        ]);
 
-        $constraints = array(
+        $constraints = [
             $constraintA1,
             $constraintB,
             $constraintA2,
-        );
+        ];
 
-        $constraintsByGroup = array(
-            'Default' => array(
+        $constraintsByGroup = [
+            'Default' => [
                 $constraintA1,
                 $constraintA2,
-            ),
-            'EntityParent' => array(
+            ],
+            'EntityParent' => [
                 $constraintA1,
-            ),
-            'Entity' => array(
+            ],
+            'Entity' => [
                 $constraintA1,
                 $constraintA2,
-            ),
-            'foo' => array(
+            ],
+            'foo' => [
                 $constraintB,
-            ),
-        );
+            ],
+        ];
 
         $members = $this->metadata->getPropertyMetadata('firstName');
 
@@ -201,19 +201,19 @@ public function testMergeConstraintsKeepsPrivateMembersSeparate()
         $this->metadata->mergeConstraints($parent);
         $this->metadata->addPropertyConstraint('internal', new ConstraintA());
 
-        $parentConstraints = array(
-            new ConstraintA(array('groups' => array(
+        $parentConstraints = [
+            new ConstraintA(['groups' => [
                 'Default',
                 'EntityParent',
                 'Entity',
-            ))),
-        );
-        $constraints = array(
-            new ConstraintA(array('groups' => array(
+            ]]),
+        ];
+        $constraints = [
+            new ConstraintA(['groups' => [
                 'Default',
                 'Entity',
-            ))),
-        );
+            ]]),
+        ];
 
         $members = $this->metadata->getPropertyMetadata('internal');
 
@@ -233,8 +233,8 @@ public function testGetReflectionClass()
 
     public function testSerialize()
     {
-        $this->metadata->addConstraint(new ConstraintA(array('property1' => 'A')));
-        $this->metadata->addConstraint(new ConstraintB(array('groups' => 'TestGroup')));
+        $this->metadata->addConstraint(new ConstraintA(['property1' => 'A']));
+        $this->metadata->addConstraint(new ConstraintB(['groups' => 'TestGroup']));
         $this->metadata->addPropertyConstraint('firstName', new ConstraintA());
         $this->metadata->addGetterConstraint('lastName', new ConstraintB());
 
@@ -245,7 +245,7 @@ public function testSerialize()
 
     public function testGroupSequencesWorkIfContainingDefaultGroup()
     {
-        $this->metadata->setGroupSequence(array('Foo', $this->metadata->getDefaultGroup()));
+        $this->metadata->setGroupSequence(['Foo', $this->metadata->getDefaultGroup()]);
 
         $this->assertInstanceOf('Symfony\Component\Validator\Constraints\GroupSequence', $this->metadata->getGroupSequence());
     }
@@ -255,7 +255,7 @@ public function testGroupSequencesWorkIfContainingDefaultGroup()
      */
     public function testGroupSequencesFailIfNotContainingDefaultGroup()
     {
-        $this->metadata->setGroupSequence(array('Foo', 'Bar'));
+        $this->metadata->setGroupSequence(['Foo', 'Bar']);
     }
 
     /**
@@ -263,7 +263,7 @@ public function testGroupSequencesFailIfNotContainingDefaultGroup()
      */
     public function testGroupSequencesFailIfContainingDefault()
     {
-        $this->metadata->setGroupSequence(array('Foo', $this->metadata->getDefaultGroup(), Constraint::DEFAULT_GROUP));
+        $this->metadata->setGroupSequence(['Foo', $this->metadata->getDefaultGroup(), Constraint::DEFAULT_GROUP]);
     }
 
     /**
@@ -273,7 +273,7 @@ public function testGroupSequenceFailsIfGroupSequenceProviderIsSet()
     {
         $metadata = new ClassMetadata(self::PROVIDERCLASS);
         $metadata->setGroupSequenceProvider(true);
-        $metadata->setGroupSequence(array('GroupSequenceProviderEntity', 'Foo'));
+        $metadata->setGroupSequence(['GroupSequenceProviderEntity', 'Foo']);
     }
 
     /**
@@ -282,7 +282,7 @@ public function testGroupSequenceFailsIfGroupSequenceProviderIsSet()
     public function testGroupSequenceProviderFailsIfGroupSequenceIsSet()
     {
         $metadata = new ClassMetadata(self::PROVIDERCLASS);
-        $metadata->setGroupSequence(array('GroupSequenceProviderEntity', 'Foo'));
+        $metadata->setGroupSequence(['GroupSequenceProviderEntity', 'Foo']);
         $metadata->setGroupSequenceProvider(true);
     }
 
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php
index de6852271e17..a7876d7f9168 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php
@@ -31,10 +31,10 @@ public function testLoadClassMetadataWithInterface()
         $factory = new LazyLoadingMetadataFactory(new TestLoader());
         $metadata = $factory->getMetadataFor(self::PARENT_CLASS);
 
-        $constraints = array(
-            new ConstraintA(array('groups' => array('Default', 'EntityParent'))),
-            new ConstraintA(array('groups' => array('Default', 'EntityInterfaceA', 'EntityParent'))),
-        );
+        $constraints = [
+            new ConstraintA(['groups' => ['Default', 'EntityParent']]),
+            new ConstraintA(['groups' => ['Default', 'EntityInterfaceA', 'EntityParent']]),
+        ];
 
         $this->assertEquals($constraints, $metadata->getConstraints());
     }
@@ -44,34 +44,34 @@ public function testMergeParentConstraints()
         $factory = new LazyLoadingMetadataFactory(new TestLoader());
         $metadata = $factory->getMetadataFor(self::CLASS_NAME);
 
-        $constraints = array(
-            new ConstraintA(array('groups' => array(
+        $constraints = [
+            new ConstraintA(['groups' => [
                 'Default',
                 'Entity',
-            ))),
-            new ConstraintA(array('groups' => array(
+            ]]),
+            new ConstraintA(['groups' => [
                 'Default',
                 'EntityParent',
                 'Entity',
-            ))),
-            new ConstraintA(array('groups' => array(
+            ]]),
+            new ConstraintA(['groups' => [
                 'Default',
                 'EntityInterfaceA',
                 'EntityParent',
                 'Entity',
-            ))),
-            new ConstraintA(array('groups' => array(
+            ]]),
+            new ConstraintA(['groups' => [
                 'Default',
                 'EntityInterfaceB',
                 'Entity',
-            ))),
-            new ConstraintA(array('groups' => array(
+            ]]),
+            new ConstraintA(['groups' => [
                 'Default',
                 'EntityParentInterface',
                 'EntityInterfaceB',
                 'Entity',
-            ))),
-        );
+            ]]),
+        ];
 
         $this->assertEquals($constraints, $metadata->getConstraints());
     }
@@ -81,21 +81,21 @@ public function testWriteMetadataToCache()
         $cache = $this->getMockBuilder('Symfony\Component\Validator\Mapping\Cache\CacheInterface')->getMock();
         $factory = new LazyLoadingMetadataFactory(new TestLoader(), $cache);
 
-        $parentClassConstraints = array(
-            new ConstraintA(array('groups' => array('Default', 'EntityParent'))),
-            new ConstraintA(array('groups' => array('Default', 'EntityInterfaceA', 'EntityParent'))),
-        );
-        $interfaceAConstraints = array(
-            new ConstraintA(array('groups' => array('Default', 'EntityInterfaceA'))),
-        );
+        $parentClassConstraints = [
+            new ConstraintA(['groups' => ['Default', 'EntityParent']]),
+            new ConstraintA(['groups' => ['Default', 'EntityInterfaceA', 'EntityParent']]),
+        ];
+        $interfaceAConstraints = [
+            new ConstraintA(['groups' => ['Default', 'EntityInterfaceA']]),
+        ];
 
         $cache->expects($this->never())
               ->method('has');
         $cache->expects($this->exactly(2))
               ->method('read')
               ->withConsecutive(
-                  array($this->equalTo(self::PARENT_CLASS)),
-                  array($this->equalTo(self::INTERFACE_A_CLASS))
+                  [$this->equalTo(self::PARENT_CLASS)],
+                  [$this->equalTo(self::INTERFACE_A_CLASS)]
               )
               ->will($this->returnValue(false));
         $cache->expects($this->exactly(2))
@@ -135,8 +135,8 @@ public function testReadMetadataFromCache()
         $cache->expects($this->exactly(2))
               ->method('read')
               ->withConsecutive(
-                  array(self::PARENT_CLASS),
-                  array(self::INTERFACE_A_CLASS)
+                  [self::PARENT_CLASS],
+                  [self::INTERFACE_A_CLASS]
               )
               ->willReturnCallback(function ($name) use ($metadata, $parentClass, $interfaceClass) {
                   if ($parentClass == $name) {
@@ -194,7 +194,7 @@ public function testGroupsFromParent()
         $reader = new \Symfony\Component\Validator\Mapping\Loader\StaticMethodLoader();
         $factory = new LazyLoadingMetadataFactory($reader);
         $metadata = $factory->getMetadataFor('Symfony\Component\Validator\Tests\Fixtures\EntityStaticCarTurbo');
-        $groups = array();
+        $groups = [];
 
         foreach ($metadata->getPropertyMetadata('wheels') as $propertyMetadata) {
             $constraints = $propertyMetadata->getConstraints();
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Loader/AnnotationLoaderTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Loader/AnnotationLoaderTest.php
index 783e9b27d850..e5009624296e 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Loader/AnnotationLoaderTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Loader/AnnotationLoaderTest.php
@@ -52,23 +52,23 @@ public function testLoadClassMetadata()
         $loader->loadClassMetadata($metadata);
 
         $expected = new ClassMetadata('Symfony\Component\Validator\Tests\Fixtures\Entity');
-        $expected->setGroupSequence(array('Foo', 'Entity'));
+        $expected->setGroupSequence(['Foo', 'Entity']);
         $expected->addConstraint(new ConstraintA());
-        $expected->addConstraint(new Callback(array('Symfony\Component\Validator\Tests\Fixtures\CallbackClass', 'callback')));
-        $expected->addConstraint(new Callback(array('callback' => 'validateMe', 'payload' => 'foo')));
+        $expected->addConstraint(new Callback(['Symfony\Component\Validator\Tests\Fixtures\CallbackClass', 'callback']));
+        $expected->addConstraint(new Callback(['callback' => 'validateMe', 'payload' => 'foo']));
         $expected->addConstraint(new Callback('validateMeStatic'));
         $expected->addPropertyConstraint('firstName', new NotNull());
-        $expected->addPropertyConstraint('firstName', new Range(array('min' => 3)));
-        $expected->addPropertyConstraint('firstName', new All(array(new NotNull(), new Range(array('min' => 3)))));
-        $expected->addPropertyConstraint('firstName', new All(array('constraints' => array(new NotNull(), new Range(array('min' => 3))))));
-        $expected->addPropertyConstraint('firstName', new Collection(array('fields' => array(
-            'foo' => array(new NotNull(), new Range(array('min' => 3))),
-            'bar' => new Range(array('min' => 5)),
-        ))));
-        $expected->addPropertyConstraint('firstName', new Choice(array(
+        $expected->addPropertyConstraint('firstName', new Range(['min' => 3]));
+        $expected->addPropertyConstraint('firstName', new All([new NotNull(), new Range(['min' => 3])]));
+        $expected->addPropertyConstraint('firstName', new All(['constraints' => [new NotNull(), new Range(['min' => 3])]]));
+        $expected->addPropertyConstraint('firstName', new Collection(['fields' => [
+            'foo' => [new NotNull(), new Range(['min' => 3])],
+            'bar' => new Range(['min' => 5]),
+        ]]));
+        $expected->addPropertyConstraint('firstName', new Choice([
             'message' => 'Must be one of %choices%',
-            'choices' => array('A', 'B'),
-        )));
+            'choices' => ['A', 'B'],
+        ]));
         $expected->addPropertyConstraint('childA', new Valid());
         $expected->addPropertyConstraint('childB', new Valid());
         $expected->addGetterConstraint('lastName', new NotNull());
@@ -124,23 +124,23 @@ public function testLoadClassMetadataAndMerge()
         $expected = new ClassMetadata('Symfony\Component\Validator\Tests\Fixtures\Entity');
         $expected->mergeConstraints($expected_parent);
 
-        $expected->setGroupSequence(array('Foo', 'Entity'));
+        $expected->setGroupSequence(['Foo', 'Entity']);
         $expected->addConstraint(new ConstraintA());
-        $expected->addConstraint(new Callback(array('Symfony\Component\Validator\Tests\Fixtures\CallbackClass', 'callback')));
-        $expected->addConstraint(new Callback(array('callback' => 'validateMe', 'payload' => 'foo')));
+        $expected->addConstraint(new Callback(['Symfony\Component\Validator\Tests\Fixtures\CallbackClass', 'callback']));
+        $expected->addConstraint(new Callback(['callback' => 'validateMe', 'payload' => 'foo']));
         $expected->addConstraint(new Callback('validateMeStatic'));
         $expected->addPropertyConstraint('firstName', new NotNull());
-        $expected->addPropertyConstraint('firstName', new Range(array('min' => 3)));
-        $expected->addPropertyConstraint('firstName', new All(array(new NotNull(), new Range(array('min' => 3)))));
-        $expected->addPropertyConstraint('firstName', new All(array('constraints' => array(new NotNull(), new Range(array('min' => 3))))));
-        $expected->addPropertyConstraint('firstName', new Collection(array('fields' => array(
-            'foo' => array(new NotNull(), new Range(array('min' => 3))),
-            'bar' => new Range(array('min' => 5)),
-        ))));
-        $expected->addPropertyConstraint('firstName', new Choice(array(
+        $expected->addPropertyConstraint('firstName', new Range(['min' => 3]));
+        $expected->addPropertyConstraint('firstName', new All([new NotNull(), new Range(['min' => 3])]));
+        $expected->addPropertyConstraint('firstName', new All(['constraints' => [new NotNull(), new Range(['min' => 3])]]));
+        $expected->addPropertyConstraint('firstName', new Collection(['fields' => [
+            'foo' => [new NotNull(), new Range(['min' => 3])],
+            'bar' => new Range(['min' => 5]),
+        ]]));
+        $expected->addPropertyConstraint('firstName', new Choice([
             'message' => 'Must be one of %choices%',
-            'choices' => array('A', 'B'),
-        )));
+            'choices' => ['A', 'B'],
+        ]));
         $expected->addPropertyConstraint('childA', new Valid());
         $expected->addPropertyConstraint('childB', new Valid());
         $expected->addGetterConstraint('lastName', new NotNull());
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Loader/FilesLoaderTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Loader/FilesLoaderTest.php
index 6fee7b6ff540..2cf009fc0837 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Loader/FilesLoaderTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Loader/FilesLoaderTest.php
@@ -34,12 +34,12 @@ public function testCallsActualFileLoaderForMetadata()
 
     public function getFilesLoader(LoaderInterface $loader)
     {
-        return $this->getMockForAbstractClass('Symfony\Component\Validator\Tests\Fixtures\FilesLoader', array(array(
+        return $this->getMockForAbstractClass('Symfony\Component\Validator\Tests\Fixtures\FilesLoader', [[
             __DIR__.'/constraint-mapping.xml',
             __DIR__.'/constraint-mapping.yaml',
             __DIR__.'/constraint-mapping.test',
             __DIR__.'/constraint-mapping.txt',
-        ), $loader));
+        ], $loader]);
     }
 
     public function getFileLoader()
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Loader/LoaderChainTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Loader/LoaderChainTest.php
index 0d28b0a399e4..f9905386c960 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Loader/LoaderChainTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Loader/LoaderChainTest.php
@@ -31,10 +31,10 @@ public function testAllLoadersAreCalled()
             ->method('loadClassMetadata')
             ->with($this->equalTo($metadata));
 
-        $chain = new LoaderChain(array(
+        $chain = new LoaderChain([
             $loader1,
             $loader2,
-        ));
+        ]);
 
         $chain->loadClassMetadata($metadata);
     }
@@ -53,10 +53,10 @@ public function testReturnsTrueIfAnyLoaderReturnedTrue()
             ->method('loadClassMetadata')
             ->will($this->returnValue(false));
 
-        $chain = new LoaderChain(array(
+        $chain = new LoaderChain([
             $loader1,
             $loader2,
-        ));
+        ]);
 
         $this->assertTrue($chain->loadClassMetadata($metadata));
     }
@@ -75,10 +75,10 @@ public function testReturnsFalseIfNoLoaderReturnedTrue()
             ->method('loadClassMetadata')
             ->will($this->returnValue(false));
 
-        $chain = new LoaderChain(array(
+        $chain = new LoaderChain([
             $loader1,
             $loader2,
-        ));
+        ]);
 
         $this->assertFalse($chain->loadClassMetadata($metadata));
     }
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Loader/XmlFileLoaderTest.php
index 100e4fa062fc..d6b20a0c8dcb 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Loader/XmlFileLoaderTest.php
@@ -53,26 +53,26 @@ public function testLoadClassMetadata()
         $loader->loadClassMetadata($metadata);
 
         $expected = new ClassMetadata('Symfony\Component\Validator\Tests\Fixtures\Entity');
-        $expected->setGroupSequence(array('Foo', 'Entity'));
+        $expected->setGroupSequence(['Foo', 'Entity']);
         $expected->addConstraint(new ConstraintA());
         $expected->addConstraint(new ConstraintB());
         $expected->addConstraint(new Callback('validateMe'));
         $expected->addConstraint(new Callback('validateMeStatic'));
-        $expected->addConstraint(new Callback(array('Symfony\Component\Validator\Tests\Fixtures\CallbackClass', 'callback')));
+        $expected->addConstraint(new Callback(['Symfony\Component\Validator\Tests\Fixtures\CallbackClass', 'callback']));
         $expected->addConstraint(new Traverse(false));
         $expected->addPropertyConstraint('firstName', new NotNull());
-        $expected->addPropertyConstraint('firstName', new Range(array('min' => 3)));
-        $expected->addPropertyConstraint('firstName', new Choice(array('A', 'B')));
-        $expected->addPropertyConstraint('firstName', new All(array(new NotNull(), new Range(array('min' => 3)))));
-        $expected->addPropertyConstraint('firstName', new All(array('constraints' => array(new NotNull(), new Range(array('min' => 3))))));
-        $expected->addPropertyConstraint('firstName', new Collection(array('fields' => array(
-            'foo' => array(new NotNull(), new Range(array('min' => 3))),
-            'bar' => array(new Range(array('min' => 5))),
-        ))));
-        $expected->addPropertyConstraint('firstName', new Choice(array(
+        $expected->addPropertyConstraint('firstName', new Range(['min' => 3]));
+        $expected->addPropertyConstraint('firstName', new Choice(['A', 'B']));
+        $expected->addPropertyConstraint('firstName', new All([new NotNull(), new Range(['min' => 3])]));
+        $expected->addPropertyConstraint('firstName', new All(['constraints' => [new NotNull(), new Range(['min' => 3])]]));
+        $expected->addPropertyConstraint('firstName', new Collection(['fields' => [
+            'foo' => [new NotNull(), new Range(['min' => 3])],
+            'bar' => [new Range(['min' => 5])],
+        ]]));
+        $expected->addPropertyConstraint('firstName', new Choice([
             'message' => 'Must be one of %choices%',
-            'choices' => array('A', 'B'),
-        )));
+            'choices' => ['A', 'B'],
+        ]));
         $expected->addGetterConstraint('lastName', new NotNull());
         $expected->addGetterConstraint('valid', new IsTrue());
         $expected->addGetterConstraint('permissions', new IsTrue());
@@ -88,7 +88,7 @@ public function testLoadClassMetadataWithNonStrings()
         $loader->loadClassMetadata($metadata);
 
         $expected = new ClassMetadata('Symfony\Component\Validator\Tests\Fixtures\Entity');
-        $expected->addPropertyConstraint('firstName', new Regex(array('pattern' => '/^1/', 'match' => false)));
+        $expected->addPropertyConstraint('firstName', new Regex(['pattern' => '/^1/', 'match' => false]));
 
         $properties = $metadata->getPropertyMetadata('firstName');
         $constraints = $properties[0]->getConstraints();
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Loader/YamlFileLoaderTest.php
index 9920fb0737ae..afa50cbee648 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Loader/YamlFileLoaderTest.php
@@ -35,7 +35,7 @@ public function testLoadClassMetadataReturnsFalseIfEmpty()
 
         $r = new \ReflectionProperty($loader, 'classes');
         $r->setAccessible(true);
-        $this->assertSame(array(), $r->getValue($loader));
+        $this->assertSame([], $r->getValue($loader));
     }
 
     /**
@@ -52,10 +52,10 @@ public function testInvalidYamlFiles($path)
 
     public function provideInvalidYamlFiles()
     {
-        return array(
-            array('nonvalid-mapping.yml'),
-            array('bad-format.yml'),
-        );
+        return [
+            ['nonvalid-mapping.yml'],
+            ['bad-format.yml'],
+        ];
     }
 
     /**
@@ -98,25 +98,25 @@ public function testLoadClassMetadata()
         $loader->loadClassMetadata($metadata);
 
         $expected = new ClassMetadata('Symfony\Component\Validator\Tests\Fixtures\Entity');
-        $expected->setGroupSequence(array('Foo', 'Entity'));
+        $expected->setGroupSequence(['Foo', 'Entity']);
         $expected->addConstraint(new ConstraintA());
         $expected->addConstraint(new ConstraintB());
         $expected->addConstraint(new Callback('validateMe'));
         $expected->addConstraint(new Callback('validateMeStatic'));
-        $expected->addConstraint(new Callback(array('Symfony\Component\Validator\Tests\Fixtures\CallbackClass', 'callback')));
+        $expected->addConstraint(new Callback(['Symfony\Component\Validator\Tests\Fixtures\CallbackClass', 'callback']));
         $expected->addPropertyConstraint('firstName', new NotNull());
-        $expected->addPropertyConstraint('firstName', new Range(array('min' => 3)));
-        $expected->addPropertyConstraint('firstName', new Choice(array('A', 'B')));
-        $expected->addPropertyConstraint('firstName', new All(array(new NotNull(), new Range(array('min' => 3)))));
-        $expected->addPropertyConstraint('firstName', new All(array('constraints' => array(new NotNull(), new Range(array('min' => 3))))));
-        $expected->addPropertyConstraint('firstName', new Collection(array('fields' => array(
-            'foo' => array(new NotNull(), new Range(array('min' => 3))),
-            'bar' => array(new Range(array('min' => 5))),
-        ))));
-        $expected->addPropertyConstraint('firstName', new Choice(array(
+        $expected->addPropertyConstraint('firstName', new Range(['min' => 3]));
+        $expected->addPropertyConstraint('firstName', new Choice(['A', 'B']));
+        $expected->addPropertyConstraint('firstName', new All([new NotNull(), new Range(['min' => 3])]));
+        $expected->addPropertyConstraint('firstName', new All(['constraints' => [new NotNull(), new Range(['min' => 3])]]));
+        $expected->addPropertyConstraint('firstName', new Collection(['fields' => [
+            'foo' => [new NotNull(), new Range(['min' => 3])],
+            'bar' => [new Range(['min' => 5])],
+        ]]));
+        $expected->addPropertyConstraint('firstName', new Choice([
             'message' => 'Must be one of %choices%',
-            'choices' => array('A', 'B'),
-        )));
+            'choices' => ['A', 'B'],
+        ]));
         $expected->addGetterConstraint('lastName', new NotNull());
         $expected->addGetterConstraint('valid', new IsTrue());
         $expected->addGetterConstraint('permissions', new IsTrue());
@@ -132,7 +132,7 @@ public function testLoadClassMetadataWithConstants()
         $loader->loadClassMetadata($metadata);
 
         $expected = new ClassMetadata('Symfony\Component\Validator\Tests\Fixtures\Entity');
-        $expected->addPropertyConstraint('firstName', new Range(array('max' => PHP_INT_MAX)));
+        $expected->addPropertyConstraint('firstName', new Range(['max' => PHP_INT_MAX]));
 
         $this->assertEquals($expected, $metadata);
     }
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/MemberMetadataTest.php b/src/Symfony/Component/Validator/Tests/Mapping/MemberMetadataTest.php
index 593f90faa66b..b6983f75b571 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/MemberMetadataTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/MemberMetadataTest.php
@@ -45,8 +45,8 @@ public function testAddConstraintRequiresClassConstraints()
 
     public function testSerialize()
     {
-        $this->metadata->addConstraint(new ConstraintA(array('property1' => 'A')));
-        $this->metadata->addConstraint(new ConstraintB(array('groups' => 'TestGroup')));
+        $this->metadata->addConstraint(new ConstraintA(['property1' => 'A']));
+        $this->metadata->addConstraint(new ConstraintB(['groups' => 'TestGroup']));
 
         $metadata = unserialize(serialize($this->metadata));
 
@@ -55,7 +55,7 @@ public function testSerialize()
 
     public function testSerializeCollectionCascaded()
     {
-        $this->metadata->addConstraint(new Valid(array('traverse' => true)));
+        $this->metadata->addConstraint(new Valid(['traverse' => true]));
 
         $metadata = unserialize(serialize($this->metadata));
 
@@ -64,7 +64,7 @@ public function testSerializeCollectionCascaded()
 
     public function testSerializeCollectionNotCascaded()
     {
-        $this->metadata->addConstraint(new Valid(array('traverse' => false)));
+        $this->metadata->addConstraint(new Valid(['traverse' => false]));
 
         $metadata = unserialize(serialize($this->metadata));
 
diff --git a/src/Symfony/Component/Validator/Tests/Util/PropertyPathTest.php b/src/Symfony/Component/Validator/Tests/Util/PropertyPathTest.php
index 235e1780d907..f796463bbc32 100644
--- a/src/Symfony/Component/Validator/Tests/Util/PropertyPathTest.php
+++ b/src/Symfony/Component/Validator/Tests/Util/PropertyPathTest.php
@@ -26,12 +26,12 @@ public function testAppend($basePath, $subPath, $expectedPath, $message)
 
     public function provideAppendPaths()
     {
-        return array(
-            array('foo', '', 'foo', 'It returns the basePath if subPath is empty'),
-            array('', 'bar', 'bar', 'It returns the subPath if basePath is empty'),
-            array('foo', 'bar', 'foo.bar', 'It append the subPath to the basePath'),
-            array('foo', '[bar]', 'foo[bar]', 'It does not include the dot separator if subPath uses the array notation'),
-            array('0', 'bar', '0.bar', 'Leading zeros are kept.'),
-        );
+        return [
+            ['foo', '', 'foo', 'It returns the basePath if subPath is empty'],
+            ['', 'bar', 'bar', 'It returns the subPath if basePath is empty'],
+            ['foo', 'bar', 'foo.bar', 'It append the subPath to the basePath'],
+            ['foo', '[bar]', 'foo[bar]', 'It does not include the dot separator if subPath uses the array notation'],
+            ['0', 'bar', '0.bar', 'Leading zeros are kept.'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php b/src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php
index 6587dae13955..1df64de4d99c 100644
--- a/src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php
+++ b/src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php
@@ -41,7 +41,7 @@ abstract class AbstractTest extends AbstractValidatorTest
     /**
      * @return ValidatorInterface
      */
-    abstract protected function createValidator(MetadataFactoryInterface $metadataFactory, array $objectInitializers = array());
+    abstract protected function createValidator(MetadataFactoryInterface $metadataFactory, array $objectInitializers = []);
 
     protected function setUp()
     {
@@ -74,7 +74,7 @@ public function testValidateConstraintWithoutGroup()
 
     public function testValidateWithEmptyArrayAsConstraint()
     {
-        $violations = $this->validator->validate('value', array());
+        $violations = $this->validator->validate('value', []);
         $this->assertCount(0, $violations);
     }
 
@@ -89,20 +89,20 @@ public function testGroupSequenceAbortsAfterFailedGroup()
             $context->addViolation('Message 2');
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => function () {},
             'groups' => 'Group 1',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Group 2',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group 3',
-        )));
+        ]));
 
-        $sequence = new GroupSequence(array('Group 1', 'Group 2', 'Group 3'));
+        $sequence = new GroupSequence(['Group 1', 'Group 2', 'Group 3']);
         $violations = $this->validator->validate($entity, new Valid(), $sequence);
 
         /* @var ConstraintViolationInterface[] $violations */
@@ -123,16 +123,16 @@ public function testGroupSequenceIncludesReferences()
         };
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Group 1',
-        )));
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        ]));
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group 2',
-        )));
+        ]));
 
-        $sequence = new GroupSequence(array('Group 1', 'Entity'));
+        $sequence = new GroupSequence(['Group 1', 'Entity']);
         $violations = $this->validator->validate($entity, new Valid(), $sequence);
 
         /* @var ConstraintViolationInterface[] $violations */
@@ -157,7 +157,7 @@ public function testValidateInSeparateContext()
             $this->assertCount(1, $violations);
             $this->assertSame('Message value', $violations[0]->getMessage());
             $this->assertSame('Message
10000
 %param%', $violations[0]->getMessageTemplate());
-            $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+            $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
             $this->assertSame('', $violations[0]->getPropertyPath());
 
             // The root is different as we're in a new context
@@ -180,17 +180,17 @@ public function testValidateInSeparateContext()
             $this->assertSame($entity->reference, $context->getValue());
             $this->assertSame($entity->reference, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Group',
-        )));
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        ]));
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validator->validate($entity, new Valid(), 'Group');
 
@@ -236,17 +236,17 @@ public function testValidateInContext()
             $this->assertSame($entity->reference, $context->getValue());
             $this->assertSame($entity->reference, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Group',
-        )));
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        ]));
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validator->validate($entity, new Valid(), 'Group');
 
@@ -254,7 +254,7 @@ public function testValidateInContext()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('subpath', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame($entity->reference, $violations[0]->getInvalidValue());
@@ -278,7 +278,7 @@ public function testValidateArrayInContext()
                 ->getValidator()
                 ->inContext($context)
                 ->atPath('subpath')
-                ->validate(array('key' => $value->reference))
+                ->validate(['key' => $value->reference])
             ;
 
             // context changes shouldn't leak out of the validate() call
@@ -299,17 +299,17 @@ public function testValidateArrayInContext()
             $this->assertSame($entity->reference, $context->getValue());
             $this->assertSame($entity->reference, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Group',
-        )));
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        ]));
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validator->validate($entity, new Valid(), 'Group');
 
@@ -317,7 +317,7 @@ public function testValidateArrayInContext()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('subpath[key]', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame($entity->reference, $violations[0]->getInvalidValue());
@@ -328,7 +328,7 @@ public function testValidateArrayInContext()
     public function testTraverseTraversableByDefault()
     {
         $entity = new Entity();
-        $traversable = new \ArrayIterator(array('key' => $entity));
+        $traversable = new \ArrayIterator(['key' => $entity]);
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity, $traversable) {
             $this->assertSame($this::ENTITY_CLASS, $context->getClassName());
@@ -340,14 +340,14 @@ public function testTraverseTraversableByDefault()
             $this->assertSame($entity, $context->getValue());
             $this->assertSame($entity, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $this->metadataFactory->addMetadata(new ClassMetadata('ArrayIterator'));
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($traversable, new Valid(), 'Group');
 
@@ -355,7 +355,7 @@ public function testTraverseTraversableByDefault()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('[key]', $violations[0]->getPropertyPath());
         $this->assertSame($traversable, $violations[0]->getRoot());
         $this->assertSame($entity, $violations[0]->getInvalidValue());
@@ -366,7 +366,7 @@ public function testTraverseTraversableByDefault()
     public function testTraversalEnabledOnClass()
     {
         $entity = new Entity();
-        $traversable = new \ArrayIterator(array('key' => $entity));
+        $traversable = new \ArrayIterator(['key' => $entity]);
 
         $callback = function ($value, ExecutionContextInterface $context) {
             $context->addViolation('Message');
@@ -376,10 +376,10 @@ public function testTraversalEnabledOnClass()
         $traversableMetadata->addConstraint(new Traverse(true));
 
         $this->metadataFactory->addMetadata($traversableMetadata);
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($traversable, new Valid(), 'Group');
 
@@ -390,7 +390,7 @@ public function testTraversalEnabledOnClass()
     public function testTraversalDisabledOnClass()
     {
         $entity = new Entity();
-        $traversable = new \ArrayIterator(array('key' => $entity));
+        $traversable = new \ArrayIterator(['key' => $entity]);
 
         $callback = function ($value, ExecutionContextInterface $context) {
             $this->fail('Should not be called');
@@ -400,10 +400,10 @@ public function testTraversalDisabledOnClass()
         $traversableMetadata->addConstraint(new Traverse(false));
 
         $this->metadataFactory->addMetadata($traversableMetadata);
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($traversable, new Valid(), 'Group');
 
@@ -426,7 +426,7 @@ public function testExpectTraversableIfTraversalEnabledOnClass()
     public function testReferenceTraversalDisabledOnClass()
     {
         $entity = new Entity();
-        $entity->reference = new \ArrayIterator(array('key' => new Reference()));
+        $entity->reference = new \ArrayIterator(['key' => new Reference()]);
 
         $callback = function ($value, ExecutionContextInterface $context) {
             $this->fail('Should not be called');
@@ -436,10 +436,10 @@ public function testReferenceTraversalDisabledOnClass()
         $traversableMetadata->addConstraint(new Traverse(false));
 
         $this->metadataFactory->addMetadata($traversableMetadata);
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
         $this->metadata->addPropertyConstraint('reference', new Valid());
 
         $violations = $this->validate($entity, new Valid(), 'Group');
@@ -451,7 +451,7 @@ public function testReferenceTraversalDisabledOnClass()
     public function testReferenceTraversalEnabledOnReferenceDisabledOnClass()
     {
         $entity = new Entity();
-        $entity->reference = new \ArrayIterator(array('key' => new Reference()));
+        $entity->reference = new \ArrayIterator(['key' => new Reference()]);
 
         $callback = function ($value, ExecutionContextInterface $context) {
             $this->fail('Should not be called');
@@ -461,13 +461,13 @@ public function testReferenceTraversalEnabledOnReferenceDisabledOnClass()
         $traversableMetadata->addConstraint(new Traverse(false));
 
         $this->metadataFactory->addMetadata($traversableMetadata);
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
-        $this->metadata->addPropertyConstraint('reference', new Valid(array(
+        ]));
+        $this->metadata->addPropertyConstraint('reference', new Valid([
             'traverse' => true,
-        )));
+        ]));
 
         $violations = $this->validate($entity, new Valid(), 'Group');
 
@@ -478,7 +478,7 @@ public function testReferenceTraversalEnabledOnReferenceDisabledOnClass()
     public function testReferenceTraversalDisabledOnReferenceEnabledOnClass()
     {
         $entity = new Entity();
-        $entity->reference = new \ArrayIterator(array('key' => new Reference()));
+        $entity->reference = new \ArrayIterator(['key' => new Reference()]);
 
         $callback = function ($value, ExecutionContextInterface $context) {
             $this->fail('Should not be called');
@@ -488,13 +488,13 @@ public function testReferenceTraversalDisabledOnReferenceEnabledOnClass()
         $traversableMetadata->addConstraint(new Traverse(true));
 
         $this->metadataFactory->addMetadata($traversableMetadata);
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
-        $this->metadata->addPropertyConstraint('reference', new Valid(array(
+        ]));
+        $this->metadata->addPropertyConstraint('reference', new Valid([
             'traverse' => false,
-        )));
+        ]));
 
         $violations = $this->validate($entity, new Valid(), 'Group');
 
@@ -523,7 +523,7 @@ public function testAddCustomizedViolation()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame('Invalid value', $violations[0]->getInvalidValue());
@@ -539,12 +539,12 @@ public function testNoDuplicateValidationIfClassConstraintInMultipleGroups()
             $context->addViolation('Message');
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
-            'groups' => array('Group 1', 'Group 2'),
-        )));
+            'groups' => ['Group 1', 'Group 2'],
+        ]));
 
-        $violations = $this->validator->validate($entity, new Valid(), array('Group 1', 'Group 2'));
+        $violations = $this->validator->validate($entity, new Valid(), ['Group 1', 'Group 2']);
 
         /* @var ConstraintViolationInterface[] $violations */
         $this->assertCount(1, $violations);
@@ -558,12 +558,12 @@ public function testNoDuplicateValidationIfPropertyConstraintInMultipleGroups()
             $context->addViolation('Message');
         };
 
-        $this->metadata->addPropertyConstraint('firstName', new Callback(array(
+        $this->metadata->addPropertyConstraint('firstName', new Callback([
             'callback' => $callback,
-            'groups' => array('Group 1', 'Group 2'),
-        )));
+            'groups' => ['Group 1', 'Group 2'],
+        ]));
 
-        $violations = $this->validator->validate($entity, new Valid(), array('Group 1', 'Group 2'));
+        $violations = $this->validator->validate($entity, new Valid(), ['Group 1', 'Group 2']);
 
         /* @var ConstraintViolationInterface[] $violations */
         $this->assertCount(1, $violations);
@@ -582,7 +582,7 @@ public function testAccessCurrentObject()
         $called = false;
         $entity = new Entity();
         $entity->firstName = 'Bernhard';
-        $entity->data = array('firstName' => 'Bernhard');
+        $entity->data = ['firstName' => 'Bernhard'];
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity, &$called) {
             $called = true;
@@ -591,7 +591,7 @@ public function testAccessCurrentObject()
 
         $this->metadata->addConstraint(new Callback($callback));
         $this->metadata->addPropertyConstraint('firstName', new Callback($callback));
-        $this->metadata->addPropertyConstraint('data', new Collection(array('firstName' => new Expression('value == this.firstName'))));
+        $this->metadata->addPropertyConstraint('data', new Collection(['firstName' => new Expression('value == this.firstName')]));
 
         $this->validator->validate($entity);
 
@@ -618,10 +618,10 @@ public function testInitializeObjectsOnFirstValidation()
             ->method('initialize')
             ->with($entity);
 
-        $this->validator = $this->createValidator($this->metadataFactory, array(
+        $this->validator = $this->createValidator($this->metadataFactory, [
             $initializer1,
             $initializer2,
-        ));
+        ]);
 
         // prepare constraint which
         // * checks that "initialized" is set to true
@@ -656,15 +656,15 @@ public function testPassConstraintToViolation()
 
     public function testCollectionConstraitViolationHasCorrectContext()
     {
-        $data = array(
+        $data = [
             'foo' => 'fooValue',
-        );
+        ];
 
         // Missing field must not be the first in the collection validation
-        $constraint = new Collection(array(
+        $constraint = new Collection([
             'foo' => new NotNull(),
             'bar' => new NotNull(),
-        ));
+        ]);
 
         $violations = $this->validate($data, $constraint);
 
@@ -680,11 +680,11 @@ public function testNestedObjectIsNotValidatedIfGroupInValidConstraintIsNotValid
         $reference->value = '';
         $entity->childA = $reference;
 
-        $this->metadata->addPropertyConstraint('firstName', new NotBlank(array('groups' => 'group1')));
-        $this->metadata->addPropertyConstraint('childA', new Valid(array('groups' => 'group1')));
+        $this->metadata->addPropertyConstraint('firstName', new NotBlank(['groups' => 'group1']));
+        $this->metadata->addPropertyConstraint('childA', new Valid(['groups' => 'group1']));
         $this->referenceMetadata->addPropertyConstraint('value', new NotBlank());
 
-        $violations = $this->validator->validate($entity, null, array());
+        $violations = $this->validator->validate($entity, null, []);
 
         $this->assertCount(0, $violations);
     }
@@ -697,11 +697,11 @@ public function testNestedObjectIsValidatedIfGroupInValidConstraintIsValidated()
         $reference->value = '';
         $entity->childA = $reference;
 
-        $this->metadata->addPropertyConstraint('firstName', new NotBlank(array('groups' => 'group1')));
-        $this->metadata->addPropertyConstraint('childA', new Valid(array('groups' => 'group1')));
-        $this->referenceMetadata->addPropertyConstraint('value', new NotBlank(array('groups' => 'group1')));
+        $this->metadata->addPropertyConstraint('firstName', new NotBlank(['groups' => 'group1']));
+        $this->metadata->addPropertyConstraint('childA', new Valid(['groups' => 'group1']));
+        $this->referenceMetadata->addPropertyConstraint('value', new NotBlank(['groups' => 'group1']));
 
-        $violations = $this->validator->validate($entity, null, array('Default', 'group1'));
+        $violations = $this->validator->validate($entity, null, ['Default', 'group1']);
 
         $this->assertCount(2, $violations);
     }
diff --git a/src/Symfony/Component/Validator/Tests/Validator/AbstractValidatorTest.php b/src/Symfony/Component/Validator/Tests/Validator/AbstractValidatorTest.php
index 7d303ce8a543..ecfc10feb643 100644
--- a/src/Symfony/Component/Validator/Tests/Validator/AbstractValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Validator/AbstractValidatorTest.php
@@ -80,13 +80,13 @@ public function testValidate()
             $this->assertSame('Bernhard', $context->getValue());
             $this->assertSame('Bernhard', $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $constraint = new Callback(array(
+        $constraint = new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        ));
+        ]);
 
         $violations = $this->validate('Bernhard', $constraint, 'Group');
 
@@ -94,7 +94,7 @@ public function testValidate()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('', $violations[0]->getPropertyPath());
         $this->assertSame('Bernhard', $violations[0]->getRoot());
         $this->assertSame('Bernhard', $violations[0]->getInvalidValue());
@@ -116,13 +116,13 @@ public function testClassConstraint()
             $this->assertSame($entity, $context->getValue());
             $this->assertSame($entity, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -130,7 +130,7 @@ public function testClassConstraint()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame($entity, $violations[0]->getInvalidValue());
@@ -155,13 +155,13 @@ public function testPropertyConstraint()
             $this->assertSame('Bernhard', $context->getValue());
             $this->assertSame('Bernhard', $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addPropertyConstraint('firstName', new Callback(array(
+        $this->metadata->addPropertyConstraint('firstName', new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -169,7 +169,7 @@ public function testPropertyConstraint()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('firstName', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame('Bernhard', $violations[0]->getInvalidValue());
@@ -194,13 +194,13 @@ public function testGetterConstraint()
             $this->assertSame('Schussek', $context->getValue());
             $this->assertSame('Schussek', $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addGetterConstraint('lastName', new Callback(array(
+        $this->metadata->addGetterConstraint('lastName', new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -208,7 +208,7 @@ public function testGetterConstraint()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('lastName', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame('Schussek', $violations[0]->getInvalidValue());
@@ -219,7 +219,7 @@ public function testGetterConstraint()
     public function testArray()
     {
         $entity = new Entity();
-        $array = array('key' => $entity);
+        $array = ['key' => $entity];
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity, $array) {
             $this->assertSame($this::ENTITY_CLASS, $context->getClassName());
@@ -231,13 +231,13 @@ public function testArray()
             $this->assertSame($entity, $context->getValue());
             $this->assertSame($entity, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($array, null, 'Group');
 
@@ -245,7 +245,7 @@ public function testArray()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('[key]', $violations[0]->getPropertyPath());
         $this->assertSame($array, $violations[0]->getRoot());
         $this->assertSame($entity, $violations[0]->getInvalidValue());
@@ -256,7 +256,7 @@ public function testArray()
     public function testRecursiveArray()
     {
         $entity = new Entity();
-        $array = array(2 => array('key' => $entity));
+        $array = [2 => ['key' => $entity]];
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity, $array) {
             $this->assertSame($this::ENTITY_CLASS, $context->getClassName());
@@ -268,13 +268,13 @@ public function testRecursiveArray()
             $this->assertSame($entity, $context->getValue());
             $this->assertSame($entity, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($array, null, 'Group');
 
@@ -282,7 +282,7 @@ public function testRecursiveArray()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('[2][key]', $violations[0]->getPropertyPath());
         $this->assertSame($array, $violations[0]->getRoot());
         $this->assertSame($entity, $violations[0]->getInvalidValue());
@@ -293,7 +293,7 @@ public function testRecursiveArray()
     public function testTraversable()
     {
         $entity = new Entity();
-        $traversable = new \ArrayIterator(array('key' => $entity));
+        $traversable = new \ArrayIterator(['key' => $entity]);
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity, $traversable) {
             $this->assertSame($this::ENTITY_CLASS, $context->getClassName());
@@ -305,13 +305,13 @@ public function testTraversable()
             $this->assertSame($entity, $context->getValue());
             $this->assertSame($entity, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($traversable, null, 'Group');
 
@@ -319,7 +319,7 @@ public function testTraversable()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('[key]', $violations[0]->getPropertyPath());
         $this->assertSame($traversable, $violations[0]->getRoot());
         $this->assertSame($entity, $violations[0]->getInvalidValue());
@@ -330,9 +330,9 @@ public function testTraversable()
     public function testRecursiveTraversable()
     {
         $entity = new Entity();
-        $traversable = new \ArrayIterator(array(
-            2 => new \ArrayIterator(array('key' => $entity)),
-        ));
+        $traversable = new \ArrayIterator([
+            2 => new \ArrayIterator(['key' => $entity]),
+        ]);
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity, $traversable) {
             $this->assertSame($this::ENTITY_CLASS, $context->getClassName());
@@ -344,13 +344,13 @@ public function testRecursiveTraversable()
             $this->assertSame($entity, $context->getValue());
             $this->assertSame($entity, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($traversable, null, 'Group');
 
@@ -358,7 +358,7 @@ public function testRecursiveTraversable()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('[2][key]', $violations[0]->getPropertyPath());
         $this->assertSame($traversable, $violations[0]->getRoot());
         $this->assertSame($entity, $violations[0]->getInvalidValue());
@@ -381,14 +381,14 @@ public function testReferenceClassConstraint()
             $this->assertSame($entity->reference, $context->getValue());
             $this->assertSame($entity->reference, $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -396,7 +396,7 @@ public function testReferenceClassConstraint()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('reference', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame($entity->reference, $violations[0]->getInvalidValue());
@@ -422,14 +422,14 @@ public function testReferencePropertyConstraint()
             $this->assertSame('Foobar', $context->getValue());
             $this->assertSame('Foobar', $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
-        $this->referenceMetadata->addPropertyConstraint('value', new Callback(array(
+        $this->referenceMetadata->addPropertyConstraint('value', new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -437,7 +437,7 @@ public function testReferencePropertyConstraint()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('reference.value', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame('Foobar', $violations[0]->getInvalidValue());
@@ -463,14 +463,14 @@ public function testReferenceGetterConstraint()
             $this->assertSame('Bamboo', $context->getValue());
             $this->assertSame('Bamboo', $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
-        $this->referenceMetadata->addPropertyConstraint('privateValue', new Callback(array(
+        $this->referenceMetadata->addPropertyConstraint('privateValue', new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -478,7 +478,7 @@ public function testReferenceGetterConstraint()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('reference.privateValue', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame('Bamboo', $violations[0]->getInvalidValue());
@@ -515,7 +515,7 @@ public function testFailOnScalarReferences()
     public function testArrayReference()
     {
         $entity = new Entity();
-        $entity->reference = array('key' => new Reference());
+        $entity->reference = ['key' => new Reference()];
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity) {
             $this->assertSame($this::REFERENCE_CLASS, $context->getClassName());
@@ -527,14 +527,14 @@ public function testArrayReference()
             $this->assertSame($entity->reference['key'], $context->getValue());
             $this->assertSame($entity->reference['key'], $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -542,7 +542,7 @@ public function testArrayReference()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('reference[key]', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame($entity->reference['key'], $violations[0]->getInvalidValue());
@@ -554,7 +554,7 @@ public function testArrayReference()
     public function testRecursiveArrayReference()
     {
         $entity = new Entity();
-        $entity->reference = array(2 => array('key' => new Reference()));
+        $entity->reference = [2 => ['key' => new Reference()]];
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity) {
             $this->assertSame($this::REFERENCE_CLASS, $context->getClassName());
@@ -566,14 +566,14 @@ public function testRecursiveArrayReference()
             $this->assertSame($entity->reference[2]['key'], $context->getValue());
             $this->assertSame($entity->reference[2]['key'], $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -581,7 +581,7 @@ public function testRecursiveArrayReference()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('reference[2][key]', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame($entity->reference[2]['key'], $violations[0]->getInvalidValue());
@@ -592,15 +592,15 @@ public function testRecursiveArrayReference()
     public function testArrayTraversalCannotBeDisabled()
     {
         $entity = new Entity();
-        $entity->reference = array('key' => new Reference());
+        $entity->reference = ['key' => new Reference()];
 
         $callback = function ($value, ExecutionContextInterface $context) {
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addPropertyConstraint('reference', new Valid(array(
+        $this->metadata->addPropertyConstraint('reference', new Valid([
             'traverse' => false,
-        )));
+        ]));
         $this->referenceMetadata->addConstraint(new Callback($callback));
 
         $violations = $this->validate($entity);
@@ -612,15 +612,15 @@ public function testArrayTraversalCannotBeDisabled()
     public function testRecursiveArrayTraversalCannotBeDisabled()
     {
         $entity = new Entity();
-        $entity->reference = array(2 => array('key' => new Reference()));
+        $entity->reference = [2 => ['key' => new Reference()]];
 
         $callback = function ($value, ExecutionContextInterface $context) {
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addPropertyConstraint('reference', new Valid(array(
+        $this->metadata->addPropertyConstraint('reference', new Valid([
             'traverse' => false,
-        )));
+        ]));
         $this->referenceMetadata->addConstraint(new Callback($callback));
 
         $violations = $this->validate($entity);
@@ -632,7 +632,7 @@ public function testRecursiveArrayTraversalCannotBeDisabled()
     public function testIgnoreScalarsDuringArrayTraversal()
     {
         $entity = new Entity();
-        $entity->reference = array('string', 1234);
+        $entity->reference = ['string', 1234];
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
 
@@ -645,7 +645,7 @@ public function testIgnoreScalarsDuringArrayTraversal()
     public function testIgnoreNullDuringArrayTraversal()
     {
         $entity = new Entity();
-        $entity->reference = array(null);
+        $entity->reference = [null];
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
 
@@ -658,7 +658,7 @@ public function testIgnoreNullDuringArrayTraversal()
     public function testTraversableReference()
     {
         $entity = new Entity();
-        $entity->reference = new \ArrayIterator(array('key' => new Reference()));
+        $entity->reference = new \ArrayIterator(['key' => new Reference()]);
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity) {
             $this->assertSame($this::REFERENCE_CLASS, $context->getClassName());
@@ -670,14 +670,14 @@ public function testTraversableReference()
             $this->assertSame($entity->reference['key'], $context->getValue());
             $this->assertSame($entity->reference['key'], $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -685,7 +685,7 @@ public function testTraversableReference()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('reference[key]', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame($entity->reference['key'], $violations[0]->getInvalidValue());
@@ -696,16 +696,16 @@ public function testTraversableReference()
     public function testDisableTraversableTraversal()
     {
         $entity = new Entity();
-        $entity->reference = new \ArrayIterator(array('key' => new Reference()));
+        $entity->reference = new \ArrayIterator(['key' => new Reference()]);
 
         $callback = function ($value, ExecutionContextInterface $context) {
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $this->metadataFactory->addMetadata(new ClassMetadata('ArrayIterator'));
-        $this->metadata->addPropertyConstraint('reference', new Valid(array(
+        $this->metadata->addPropertyConstraint('reference', new Valid([
             'traverse' => false,
-        )));
+        ]));
         $this->referenceMetadata->addConstraint(new Callback($callback));
 
         $violations = $this->validate($entity);
@@ -722,9 +722,9 @@ public function testMetadataMustExistIfTraversalIsDisabled()
         $entity = new Entity();
         $entity->reference = new \ArrayIterator();
 
-        $this->metadata->addPropertyConstraint('reference', new Valid(array(
+        $this->metadata->addPropertyConstraint('reference', new Valid([
             'traverse' => false,
-        )));
+        ]));
 
         $this->validate($entity);
     }
@@ -732,9 +732,9 @@ public function testMetadataMustExistIfTraversalIsDisabled()
     public function testEnableRecursiveTraversableTraversal()
     {
         $entity = new Entity();
-        $entity->reference = new \ArrayIterator(array(
-            2 => new \ArrayIterator(array('key' => new Reference())),
-        ));
+        $entity->reference = new \ArrayIterator([
+            2 => new \ArrayIterator(['key' => new Reference()]),
+        ]);
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity) {
             $this->assertSame($this::REFERENCE_CLASS, $context->getClassName());
@@ -746,16 +746,16 @@ public function testEnableRecursiveTraversableTraversal()
             $this->assertSame($entity->reference[2]['key'], $context->getValue());
             $this->assertSame($entity->reference[2]['key'], $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
-        $this->metadata->addPropertyConstraint('reference', new Valid(array(
+        $this->metadata->addPropertyConstraint('reference', new Valid([
             'traverse' => true,
-        )));
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        ]));
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group');
 
@@ -763,7 +763,7 @@ public function testEnableRecursiveTraversableTraversal()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('reference[2][key]', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame($entity->reference[2]['key'], $violations[0]->getInvalidValue());
@@ -789,21 +789,21 @@ public function testValidateProperty()
             $this->assertSame('Bernhard', $context->getValue());
             $this->assertSame('Bernhard', $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $callback2 = function ($value, ExecutionContextInterface $context) {
             $context->addViolation('Other violation');
         };
 
-        $this->metadata->addPropertyConstraint('firstName', new Callback(array(
+        $this->metadata->addPropertyConstraint('firstName', new Callback([
             'callback' => $callback1,
             'groups' => 'Group',
-        )));
-        $this->metadata->addPropertyConstraint('lastName', new Callback(array(
+        ]));
+        $this->metadata->addPropertyConstraint('lastName', new Callback([
             'callback' => $callback2,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validateProperty($entity, 'firstName', 'Group');
 
@@ -811,7 +811,7 @@ public function testValidateProperty()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('firstName', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame('Bernhard', $violations[0]->getInvalidValue());
@@ -847,21 +847,21 @@ public function testValidatePropertyValue()
             $this->assertSame('Bernhard', $context->getValue());
             $this->assertSame('Bernhard', $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $callback2 = function ($value, ExecutionContextInterface $context) {
             $context->addViolation('Other violation');
         };
 
-        $this->metadata->addPropertyConstraint('firstName', new Callback(array(
+        $this->metadata->addPropertyConstraint('firstName', new Callback([
             'callback' => $callback1,
             'groups' => 'Group',
-        )));
-        $this->metadata->addPropertyConstraint('lastName', new Callback(array(
+        ]));
+        $this->metadata->addPropertyConstraint('lastName', new Callback([
             'callback' => $callback2,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validatePropertyValue(
             $entity,
@@ -874,7 +874,7 @@ public function testValidatePropertyValue()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('firstName', $violations[0]->getPropertyPath());
         $this->assertSame($entity, $violations[0]->getRoot());
         $this->assertSame('Bernhard', $violations[0]->getInvalidValue());
@@ -896,21 +896,21 @@ public function testValidatePropertyValueWithClassName()
             $this->assertSame('Bernhard', $context->getValue());
             $this->assertSame('Bernhard', $value);
 
-            $context->addViolation('Message %param%', array('%param%' => 'value'));
+            $context->addViolation('Message %param%', ['%param%' => 'value']);
         };
 
         $callback2 = function ($value, ExecutionContextInterface $context) {
             $context->addViolation('Other violation');
         };
 
-        $this->metadata->addPropertyConstraint('firstName', new Callback(array(
+        $this->metadata->addPropertyConstraint('firstName', new Callback([
             'callback' => $callback1,
             'groups' => 'Group',
-        )));
-        $this->metadata->addPropertyConstraint('lastName', new Callback(array(
+        ]));
+        $this->metadata->addPropertyConstraint('lastName', new Callback([
             'callback' => $callback2,
             'groups' => 'Group',
-        )));
+        ]));
 
         $violations = $this->validatePropertyValue(
             self::ENTITY_CLASS,
@@ -923,7 +923,7 @@ public function testValidatePropertyValueWithClassName()
         $this->assertCount(1, $violations);
         $this->assertSame('Message value', $violations[0]->getMessage());
         $this->assertSame('Message %param%', $violations[0]->getMessageTemplate());
-        $this->assertSame(array('%param%' => 'value'), $violations[0]->getParameters());
+        $this->assertSame(['%param%' => 'value'], $violations[0]->getParameters());
         $this->assertSame('', $violations[0]->getPropertyPath());
         $this->assertSame('Bernhard', $violations[0]->getRoot());
         $this->assertSame('Bernhard', $violations[0]->getInvalidValue());
@@ -990,14 +990,14 @@ public function testValidateSingleGroup()
             $context->addViolation('Message');
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group 1',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group 2',
-        )));
+        ]));
 
         $violations = $this->validate($entity, null, 'Group 2');
 
@@ -1013,16 +1013,16 @@ public function testValidateMultipleGroups()
             $context->addViolation('Message');
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group 1',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback,
             'groups' => 'Group 2',
-        )));
+        ]));
 
-        $violations = $this->validate($entity, null, array('Group 1', 'Group 2'));
+        $violations = $this->validate($entity, null, ['Group 1', 'Group 2']);
 
         /* @var ConstraintViolationInterface[] $violations */
         $this->assertCount(2, $violations);
@@ -1039,20 +1039,20 @@ public function testReplaceDefaultGroupByGroupSequenceObject()
             $context->addViolation('Violation in Group 3');
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => function () {},
             'groups' => 'Group 1',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Group 2',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group 3',
-        )));
+        ]));
 
-        $sequence = new GroupSequence(array('Group 1', 'Group 2', 'Group 3', 'Entity'));
+        $sequence = new GroupSequence(['Group 1', 'Group 2', 'Group 3', 'Entity']);
         $this->metadata->setGroupSequence($sequence);
 
         $violations = $this->validate($entity, null, 'Default');
@@ -1073,20 +1073,20 @@ public function testReplaceDefaultGroupByGroupSequenceArray()
             $context->addViolation('Violation in Group 3');
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => function () {},
             'groups' => 'Group 1',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Group 2',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group 3',
-        )));
+        ]));
 
-        $sequence = array('Group 1', 'Group 2', 'Group 3', 'Entity');
+        $sequence = ['Group 1', 'Group 2', 'Group 3', 'Entity'];
         $this->metadata->setGroupSequence($sequence);
 
         $violations = $this->validate($entity, null, 'Default');
@@ -1109,16 +1109,16 @@ public function testPropagateDefaultGroupToReferenceWhenReplacingDefaultGroup()
         };
 
         $this->metadata->addPropertyConstraint('reference', new Valid());
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Default',
-        )));
-        $this->referenceMetadata->addConstraint(new Callback(array(
+        ]));
+        $this->referenceMetadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group 1',
-        )));
+        ]));
 
-        $sequence = new GroupSequence(array('Group 1', 'Entity'));
+        $sequence = new GroupSequence(['Group 1', 'Entity']);
         $this->metadata->setGroupSequence($sequence);
 
         $violations = $this->validate($entity, null, 'Default');
@@ -1139,16 +1139,16 @@ public function testValidateCustomGroupWhenDefaultGroupWasReplaced()
             $context->addViolation('Violation in group sequence');
         };
 
-        $this->metadata->addConstraint(new Callback(array(
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Other Group',
-        )));
-        $this->metadata->addConstraint(new Callback(array(
+        ]));
+        $this->metadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group 1',
-        )));
+        ]));
 
-        $sequence = new GroupSequence(array('Group 1', 'Entity'));
+        $sequence = new GroupSequence(['Group 1', 'Entity']);
         $this->metadata->setGroupSequence($sequence);
 
         $violations = $this->validate($entity, null, 'Other Group');
@@ -1173,18 +1173,18 @@ public function testReplaceDefaultGroup($sequence, array $assertViolations)
         };
 
         $metadata = new ClassMetadata(\get_class($entity));
-        $metadata->addConstraint(new Callback(array(
+        $metadata->addConstraint(new Callback([
             'callback' => function () {},
             'groups' => 'Group 1',
-        )));
-        $metadata->addConstraint(new Callback(array(
+        ]));
+        $metadata->addConstraint(new Callback([
             'callback' => $callback1,
             'groups' => 'Group 2',
-        )));
-        $metadata->addConstraint(new Callback(array(
+        ]));
+        $metadata->addConstraint(new Callback([
             'callback' => $callback2,
             'groups' => 'Group 3',
-        )));
+        ]));
         $metadata->setGroupSequenceProvider(true);
 
         $this->metadataFactory->addMetadata($metadata);
@@ -1200,33 +1200,33 @@ public function testReplaceDefaultGroup($sequence, array $assertViolations)
 
     public function getTestReplaceDefaultGroup()
     {
-        return array(
-            array(
-                'sequence' => new GroupSequence(array('Group 1', 'Group 2', 'Group 3', 'Entity')),
-                'assertViolations' => array(
+        return [
+            [
+                'sequence' => new GroupSequence(['Group 1', 'Group 2', 'Group 3', 'Entity']),
+                'assertViolations' => [
                     'Violation in Group 2',
-                ),
-            ),
-            array(
-                'sequence' => array('Group 1', 'Group 2', 'Group 3', 'Entity'),
-                'assertViolations' => array(
+                ],
+            ],
+            [
+                'sequence' => ['Group 1', 'Group 2', 'Group 3', 'Entity'],
+                'assertViolations' => [
                     'Violation in Group 2',
-                ),
-            ),
-            array(
-                'sequence' => new GroupSequence(array('Group 1', array('Group 2', 'Group 3'), 'Entity')),
-                'assertViolations' => array(
+                ],
+            ],
+            [
+                'sequence' => new GroupSequence(['Group 1', ['Group 2', 'Group 3'], 'Entity']),
+                'assertViolations' => [
                     'Violation in Group 2',
                     'Violation in Group 3',
-                ),
-            ),
-            array(
-                'sequence' => array('Group 1', array('Group 2', 'Group 3'), 'Entity'),
-                'assertViolations' => array(
+                ],
+            ],
+            [
+                'sequence' => ['Group 1', ['Group 2', 'Group 3'], 'Entity'],
+                'assertViolations' => [
                     'Violation in Group 2',
                     'Violation in Group 3',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Validator/RecursiveValidatorTest.php b/src/Symfony/Component/Validator/Tests/Validator/RecursiveValidatorTest.php
index 49ebef0c7c01..8109b6b9bfd4 100644
--- a/src/Symfony/Component/Validator/Tests/Validator/RecursiveValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Validator/RecursiveValidatorTest.php
@@ -26,7 +26,7 @@
 
 class RecursiveValidatorTest extends AbstractTest
 {
-    protected function createValidator(MetadataFactoryInterface $metadataFactory, array $objectInitializers = array())
+    protected function createValidator(MetadataFactoryInterface $metadataFactory, array $objectInitializers = [])
     {
         $translator = new IdentityTranslator();
         $translator->setLocale('en');
@@ -44,26 +44,26 @@ public function testEmptyGroupsArrayDoesNotTriggerDeprecation()
         $childB = new ChildB();
         $childA->name = false;
         $childB->name = 'fake';
-        $entity->childA = array($childA);
-        $entity->childB = array($childB);
+        $entity->childA = [$childA];
+        $entity->childB = [$childB];
         $validatorContext = $this->getMockBuilder('Symfony\Component\Validator\Validator\ContextualValidatorInterface')->getMock();
         $validatorContext
             ->expects($this->once())
             ->method('validate')
-            ->with($entity, null, array())
+            ->with($entity, null, [])
             ->willReturnSelf();
 
         $validator = $this
             ->getMockBuilder('Symfony\Component\Validator\Validator\RecursiveValidator')
             ->disableOriginalConstructor()
-            ->setMethods(array('startContext'))
+            ->setMethods(['startContext'])
             ->getMock();
         $validator
             ->expects($this->once())
             ->method('startContext')
             ->willReturn($validatorContext);
 
-        $validator->validate($entity, null, array());
+        $validator->validate($entity, null, []);
     }
 
     public function testRelationBetweenChildAAndChildB()
@@ -77,40 +77,40 @@ public function testRelationBetweenChildAAndChildB()
 
         $childA->name = false;
         $childB->name = 'fake';
-        $entity->childA = array($childA);
-        $entity->childB = array($childB);
+        $entity->childA = [$childA];
+        $entity->childB = [$childB];
 
         $validatorContext = $this->getMockBuilder('Symfony\Component\Validator\Validator\ContextualValidatorInterface')->getMock();
         $validatorContext
             ->expects($this->once())
             ->method('validate')
-            ->with($entity, null, array())
+            ->with($entity, null, [])
             ->willReturnSelf();
 
         $validator = $this
             ->getMockBuilder('Symfony\Component\Validator\Validator\RecursiveValidator')
             ->disableOriginalConstructor()
-            ->setMethods(array('startContext'))
+            ->setMethods(['startContext'])
             ->getMock();
         $validator
             ->expects($this->once())
             ->method('startContext')
             ->willReturn($validatorContext);
 
-        $validator->validate($entity, null, array());
+        $validator->validate($entity, null, []);
     }
 
     public function testCollectionConstraintValidateAllGroupsForNestedConstraints()
     {
-        $this->metadata->addPropertyConstraint('data', new Collection(array('fields' => array(
-            'one' => array(new NotBlank(array('groups' => 'one')), new Length(array('min' => 2, 'groups' => 'two'))),
-            'two' => array(new NotBlank(array('groups' => 'two'))),
-        ))));
+        $this->metadata->addPropertyConstraint('data', new Collection(['fields' => [
+            'one' => [new NotBlank(['groups' => 'one']), new Length(['min' => 2, 'groups' => 'two'])],
+            'two' => [new NotBlank(['groups' => 'two'])],
+        ]]));
 
         $entity = new Entity();
-        $entity->data = array('one' => 't', 'two' => '');
+        $entity->data = ['one' => 't', 'two' => ''];
 
-        $violations = $this->validator->validate($entity, null, array('one', 'two'));
+        $violations = $this->validator->validate($entity, null, ['one', 'two']);
 
         $this->assertCount(2, $violations);
         $this->assertInstanceOf(Length::class, $violations->get(0)->getConstraint());
@@ -119,15 +119,15 @@ public function testCollectionConstraintValidateAllGroupsForNestedConstraints()
 
     public function testAllConstraintValidateAllGroupsForNestedConstraints()
     {
-        $this->metadata->addPropertyConstraint('data', new All(array('constraints' => array(
-            new NotBlank(array('groups' => 'one')),
-            new Length(array('min' => 2, 'groups' => 'two')),
-        ))));
+        $this->metadata->add
10000
PropertyConstraint('data', new All(['constraints' => [
+            new NotBlank(['groups' => 'one']),
+            new Length(['min' => 2, 'groups' => 'two']),
+        ]]));
 
         $entity = new Entity();
-        $entity->data = array('one' => 't', 'two' => '');
+        $entity->data = ['one' => 't', 'two' => ''];
 
-        $violations = $this->validator->validate($entity, null, array('one', 'two'));
+        $violations = $this->validator->validate($entity, null, ['one', 'two']);
 
         $this->assertCount(2, $violations);
         $this->assertInstanceOf(NotBlank::class, $violations->get(0)->getConstraint());
diff --git a/src/Symfony/Component/Validator/Tests/Validator/TraceableValidatorTest.php b/src/Symfony/Component/Validator/Tests/Validator/TraceableValidatorTest.php
index b2eef769ecf3..3d89f4e14238 100644
--- a/src/Symfony/Component/Validator/Tests/Validator/TraceableValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Validator/TraceableValidatorTest.php
@@ -27,17 +27,17 @@ class TraceableValidatorTest extends TestCase
     public function testValidate()
     {
         $originalValidator = $this->createMock(ValidatorInterface::class);
-        $violations = new ConstraintViolationList(array(
+        $violations = new ConstraintViolationList([
             $this->createMock(ConstraintViolation::class),
             $this->createMock(ConstraintViolation::class),
-        ));
+        ]);
         $originalValidator->expects($this->exactly(2))->method('validate')->willReturn($violations);
 
         $validator = new TraceableValidator($originalValidator);
 
         $object = new \stdClass();
-        $constraints = array($this->createMock(Constraint::class));
-        $groups = array('Default', 'Create');
+        $constraints = [$this->createMock(Constraint::class)];
+        $groups = ['Default', 'Create'];
 
         $validator->validate($object, $constraints, $groups);
         $line = __LINE__ - 1;
@@ -50,17 +50,17 @@ public function testValidate()
 
         $this->assertSame(iterator_to_array($violations), $callData['violations']);
 
-        $this->assertSame(array(
+        $this->assertSame([
             'value' => $object,
             'constraints' => $constraints,
             'groups' => $groups,
-        ), $callData['context']);
+        ], $callData['context']);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'name' => 'TraceableValidatorTest.php',
             'file' => __FILE__,
             'line' => $line,
-        ), $callData['caller']);
+        ], $callData['caller']);
 
         $validator->validate($object, $constraints, $groups);
         $collectedData = $validator->getCollectedData();
diff --git a/src/Symfony/Component/Validator/Tests/ValidatorBuilderTest.php b/src/Symfony/Component/Validator/Tests/ValidatorBuilderTest.php
index 77d586412b76..16d81697e658 100644
--- a/src/Symfony/Component/Validator/Tests/ValidatorBuilderTest.php
+++ b/src/Symfony/Component/Validator/Tests/ValidatorBuilderTest.php
@@ -41,7 +41,7 @@ public function testAddObjectInitializer()
 
     public function testAddObjectInitializers()
     {
-        $this->assertSame($this->builder, $this->builder->addObjectInitializers(array()));
+        $this->assertSame($this->builder, $this->builder->addObjectInitializers([]));
     }
 
     public function testAddXmlMapping()
@@ -51,7 +51,7 @@ public function testAddXmlMapping()
 
     public function testAddXmlMappings()
     {
-        $this->assertSame($this->builder, $this->builder->addXmlMappings(array()));
+        $this->assertSame($this->builder, $this->builder->addXmlMappings([]));
     }
 
     public function testAddYamlMapping()
@@ -61,7 +61,7 @@ public function testAddYamlMapping()
 
     public function testAddYamlMappings()
     {
-        $this->assertSame($this->builder, $this->builder->addYamlMappings(array()));
+        $this->assertSame($this->builder, $this->builder->addYamlMappings([]));
     }
 
     public function testAddMethodMapping()
@@ -71,7 +71,7 @@ public function testAddMethodMapping()
 
     public function testAddMethodMappings()
     {
-        $this->assertSame($this->builder, $this->builder->addMethodMappings(array()));
+        $this->assertSame($this->builder, $this->builder->addMethodMappings([]));
     }
 
     public function testEnableAnnotationMapping()
diff --git a/src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php b/src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php
index 2301618367b8..50253c50e1bb 100644
--- a/src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php
+++ b/src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php
@@ -57,11 +57,11 @@ class RecursiveContextualValidator implements ContextualValidatorInterface
      *                                                                constraint validators
      * @param ObjectInitializerInterface[]        $objectInitializers The object initializers
      */
-    public function __construct(ExecutionContextInterface $context, MetadataFactoryInterface $metadataFactory, ConstraintValidatorFactoryInterface $validatorFactory, array $objectInitializers = array())
+    public function __construct(ExecutionContextInterface $context, MetadataFactoryInterface $metadataFactory, ConstraintValidatorFactoryInterface $validatorFactory, array $objectInitializers = [])
     {
         $this->context = $context;
         $this->defaultPropertyPath = $context->getPropertyPath();
-        $this->defaultGroups = array($context->getGroup() ?: Constraint::DEFAULT_GROUP);
+        $this->defaultGroups = [$context->getGroup() ?: Constraint::DEFAULT_GROUP];
         $this->metadataFactory = $metadataFactory;
         $this->validatorFactory = $validatorFactory;
         $this->objectInitializers = $objectInitializers;
@@ -101,7 +101,7 @@ public function validate($value, $constraints = null, $groups = null)
             // You can pass a single constraint or an array of constraints
             // Make sure to deal with an array in the rest of the code
             if (!\is_array($constraints)) {
-                $constraints = array($constraints);
+                $constraints = [$constraints];
             }
 
             $metadata = new GenericMetadata();
@@ -283,7 +283,7 @@ protected function normalizeGroups($groups)
             return $groups;
         }
 
-        return array($groups);
+        return [$groups];
     }
 
     /**
@@ -731,7 +731,7 @@ private function validateGenericNode($value, $object, $cacheKey, MetadataInterfa
     private function stepThroughGroupSequence($value, $object, $cacheKey, MetadataInterface $metadata = null, $propertyPath, $traversalStrategy, GroupSequence $groupSequence, $cascadedGroup, ExecutionContextInterface $context)
     {
         $violationCount = \count($context->getViolations());
-        $cascadedGroups = $cascadedGroup ? array($cascadedGroup) : null;
+        $cascadedGroups = $cascadedGroup ? [$cascadedGroup] : null;
 
         foreach ($groupSequence->groups as $groupInSequence) {
             $groups = (array) $groupInSequence;
diff --git a/src/Symfony/Component/Validator/Validator/RecursiveValidator.php b/src/Symfony/Component/Validator/Validator/RecursiveValidator.php
index 33c2ec9e4798..a258fd4a77d7 100644
--- a/src/Symfony/Component/Validator/Validator/RecursiveValidator.php
+++ b/src/Symfony/Component/Validator/Validator/RecursiveValidator.php
@@ -41,7 +41,7 @@ class RecursiveValidator implements ValidatorInterface
      *                                                                constraint validators
      * @param ObjectInitializerInterface[]        $objectInitializers The object initializers
      */
-    public function __construct(ExecutionContextFactoryInterface $contextFactory, MetadataFactoryInterface $metadataFactory, ConstraintValidatorFactoryInterface $validatorFactory, array $objectInitializers = array())
+    public function __construct(ExecutionContextFactoryInterface $contextFactory, MetadataFactoryInterface $metadataFactory, ConstraintValidatorFactoryInterface $validatorFactory, array $objectInitializers = [])
     {
         $this->contextFactory = $contextFactory;
         $this->metadataFactory = $metadataFactory;
diff --git a/src/Symfony/Component/Validator/Validator/TraceableValidator.php b/src/Symfony/Component/Validator/Validator/TraceableValidator.php
index 96134e276746..f1b514d61f07 100644
--- a/src/Symfony/Component/Validator/Validator/TraceableValidator.php
+++ b/src/Symfony/Component/Validator/Validator/TraceableValidator.php
@@ -21,7 +21,7 @@
 class TraceableValidator implements ValidatorInterface
 {
     private $validator;
-    private $collectedData = array();
+    private $collectedData = [];
 
     public function __construct(ValidatorInterface $validator)
     {
@@ -38,7 +38,7 @@ public function getCollectedData()
 
     public function reset()
     {
-        $this->collectedData = array();
+        $this->collectedData = [];
     }
 
     /**
@@ -92,11 +92,11 @@ public function validate($value, $constraints = null, $groups = null)
         $name = str_replace('\\', '/', $file);
         $name = substr($name, strrpos($name, '/') + 1);
 
-        $this->collectedData[] = array(
+        $this->collectedData[] = [
             'caller' => compact('name', 'file', 'line'),
             'context' => compact('value', 'constraints', 'groups'),
             'violations' => iterator_to_array($violations),
-        );
+        ];
 
         return $violations;
     }
diff --git a/src/Symfony/Component/Validator/ValidatorBuilder.php b/src/Symfony/Component/Validator/ValidatorBuilder.php
index 3562b945922a..d9cb6b8b3b9d 100644
--- a/src/Symfony/Component/Validator/ValidatorBuilder.php
+++ b/src/Symfony/Component/Validator/ValidatorBuilder.php
@@ -37,10 +37,10 @@
  */
 class ValidatorBuilder implements ValidatorBuilderInterface
 {
-    private $initializers = array();
-    private $xmlMappings = array();
-    private $yamlMappings = array();
-    private $methodMappings = array();
+    private $initializers = [];
+    private $xmlMappings = [];
+    private $yamlMappings = [];
+    private $methodMappings = [];
 
     /**
      * @var Reader|null
@@ -271,7 +271,7 @@ public function setTranslationDomain($translationDomain)
      */
     public function getLoaders()
     {
-        $loaders = array();
+        $loaders = [];
 
         foreach ($this->xmlMappings as $xmlMapping) {
             $loaders[] = new XmlFileLoader($xmlMapping);
diff --git a/src/Symfony/Component/VarDumper/Caster/AmqpCaster.php b/src/Symfony/Component/VarDumper/Caster/AmqpCaster.php
index 655262f4065e..19bdc29525ea 100644
--- a/src/Symfony/Component/VarDumper/Caster/AmqpCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/AmqpCaster.php
@@ -20,7 +20,7 @@
  */
 class AmqpCaster
 {
-    private static $flags = array(
+    private static $flags = [
         AMQP_DURABLE => 'AMQP_DURABLE',
         AMQP_PASSIVE => 'AMQP_PASSIVE',
         AMQP_EXCLUSIVE => 'AMQP_EXCLUSIVE',
@@ -35,22 +35,22 @@ class AmqpCaster
         AMQP_MULTIPLE => 'AMQP_MULTIPLE',
         AMQP_NOWAIT => 'AMQP_NOWAIT',
         AMQP_REQUEUE => 'AMQP_REQUEUE',
-    );
+    ];
 
-    private static $exchangeTypes = array(
+    private static $exchangeTypes = [
         AMQP_EX_TYPE_DIRECT => 'AMQP_EX_TYPE_DIRECT',
         AMQP_EX_TYPE_FANOUT => 'AMQP_EX_TYPE_FANOUT',
         AMQP_EX_TYPE_TOPIC => 'AMQP_EX_TYPE_TOPIC',
         AMQP_EX_TYPE_HEADERS => 'AMQP_EX_TYPE_HEADERS',
-    );
+    ];
 
     public static function castConnection(\AMQPConnection $c, array $a, Stub $stub, $isNested)
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        $a += array(
+        $a += [
             $prefix.'is_connected' => $c->isConnected(),
-        );
+        ];
 
         // Recent version of the extension already expose private properties
         if (isset($a["\x00AMQPConnection\x00login"])) {
@@ -64,7 +64,7 @@ public static function castConnection(\AMQPConnection $c, array $a, Stub $stub,
             $timeout = $c->getTimeout();
         }
 
-        $a += array(
+        $a += [
             $prefix.'is_connected' => $c->isConnected(),
             $prefix.'login' => $c->getLogin(),
             $prefix.'password' => $c->getPassword(),
@@ -72,7 +72,7 @@ public static function castConnection(\AMQPConnection $c, array $a, Stub $stub,
             $prefix.'vhost' => $c->getVhost(),
             $prefix.'port' => $c->getPort(),
             $prefix.'read_timeout' => $timeout,
-        );
+        ];
 
         return $a;
     }
@@ -81,21 +81,21 @@ public static function castChannel(\AMQPChannel $c, array $a, Stub $stub, $isNes
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        $a += array(
+        $a += [
             $prefix.'is_connected' => $c->isConnected(),
             $prefix.'channel_id' => $c->getChannelId(),
-        );
+        ];
 
         // Recent version of the extension already expose private properties
         if (isset($a["\x00AMQPChannel\x00connection"])) {
             return $a;
         }
 
-        $a += array(
+        $a += [
             $prefix.'connection' => $c->getConnection(),
             $prefix.'prefetch_size' => $c->getPrefetchSize(),
             $prefix.'prefetch_count' => $c->getPrefetchCount(),
-        );
+        ];
 
         return $a;
     }
@@ -104,21 +104,21 @@ public static function castQueue(\AMQPQueue $c, array $a, Stub $stub, $isNested)
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        $a += array(
+        $a += [
             $prefix.'flags' => self::extractFlags($c->getFlags()),
-        );
+        ];
 
         // Recent version of the extension already expose private properties
         if (isset($a["\x00AMQPQueue\x00name"])) {
             return $a;
         }
 
-        $a += array(
+        $a += [
             $prefix.'connection' => $c->getConnection(),
             $prefix.'channel' => $c->getChannel(),
             $prefix.'name' => $c->getName(),
             $prefix.'arguments' => $c->getArguments(),
-        );
+        ];
 
         return $a;
     }
@@ -127,9 +127,9 @@ public static function castExchange(\AMQPExchange $c, array $a, Stub $stub, $isN
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        $a += array(
+        $a += [
             $prefix.'flags' => self::extractFlags($c->getFlags()),
-        );
+        ];
 
         $type = isset(self::$exchangeTypes[$c->getType()]) ? new ConstStub(self::$exchangeTypes[$c->getType()], $c->getType()) : $c->getType();
 
@@ -140,13 +140,13 @@ public static function castExchange(\AMQPExchange $c, array $a, Stub $stub, $isN
             return $a;
         }
 
-        $a += array(
+        $a += [
             $prefix.'connection' => $c->getConnection(),
             $prefix.'channel' => $c->getChannel(),
             $prefix.'name' => $c->getName(),
             $prefix.'type' => $type,
             $prefix.'arguments' => $c->getArguments(),
-        );
+        ];
 
         return $a;
     }
@@ -165,10 +165,10 @@ public static function castEnvelope(\AMQPEnvelope $c, array $a, Stub $stub, $isN
         }
 
         if (!($filter & Caster::EXCLUDE_VERBOSE)) {
-            $a += array($prefix.'body' => $c->getBody());
+            $a += [$prefix.'body' => $c->getBody()];
         }
 
-        $a += array(
+        $a += [
             $prefix.'delivery_tag' => $c->getDeliveryTag(),
             $prefix.'is_redelivery' => $c->isRedelivery(),
             $prefix.'exchange_name' => $c->getExchangeName(),
@@ -186,14 +186,14 @@ public static function castEnvelope(\AMQPEnvelope $c, array $a, Stub $stub, $isN
             $prefix.'type' => $c->getType(),
             $prefix.'user_id' => $c->getUserId(),
             $prefix.'app_id' => $c->getAppId(),
-        );
+        ];
 
         return $a;
     }
 
     private static function extractFlags($flags)
     {
-        $flagsArray = array();
+        $flagsArray = [];
 
         foreach (self::$flags as $value => $name) {
             if ($flags & $value) {
@@ -202,7 +202,7 @@ private static function extractFlags($flags)
         }
 
         if (!$flagsArray) {
-            $flagsArray = array('AMQP_NOPARAM');
+            $flagsArray = ['AMQP_NOPARAM'];
         }
 
         return new ConstStub(implode('|', $flagsArray), $flags);
diff --git a/src/Symfony/Component/VarDumper/Caster/ArgsStub.php b/src/Symfony/Component/VarDumper/Caster/ArgsStub.php
index 7cd759a550b3..081fb47e9963 100644
--- a/src/Symfony/Component/VarDumper/Caster/ArgsStub.php
+++ b/src/Symfony/Component/VarDumper/Caster/ArgsStub.php
@@ -20,13 +20,13 @@
  */
 class ArgsStub extends EnumStub
 {
-    private static $parameters = array();
+    private static $parameters = [];
 
     public function __construct(array $args, $function, $class)
     {
         list($variadic, $params) = self::getParameters($function, $class);
 
-        $values = array();
+        $values = [];
         foreach ($args as $k => $v) {
             $values[$k] = !is_scalar($v) && !$v instanceof Stub ? new CutStub($v) : $v;
         }
@@ -41,7 +41,7 @@ public function __construct(array $args, $function, $class)
             $values[] = new EnumStub(array_splice($values, \count($params)), false);
             $params[] = $variadic;
         }
-        if (array('...') === $params) {
+        if (['...'] === $params) {
             $this->dumpKeys = false;
             $this->value = $values[0]->value;
         } else {
@@ -58,11 +58,11 @@ private static function getParameters($function, $class)
         try {
             $r = null !== $class ? new \ReflectionMethod($class, $function) : new \ReflectionFunction($function);
         } catch (\ReflectionException $e) {
-            return array(null, null);
+            return [null, null];
         }
 
         $variadic = '...';
-        $params = array();
+        $params = [];
         foreach ($r->getParameters() as $v) {
             $k = '$'.$v->name;
             if ($v->isPassedByReference()) {
@@ -75,6 +75,6 @@ private static function getParameters($function, $class)
             }
         }
 
-        return self::$parameters[$k] = array($variadic, $params);
+        return self::$parameters[$k] = [$variadic, $params];
     }
 }
diff --git a/src/Symfony/Component/VarDumper/Caster/Caster.php b/src/Symfony/Component/VarDumper/Caster/Caster.php
index 30cb9fc0d6df..93d0ce2b41b7 100644
--- a/src/Symfony/Component/VarDumper/Caster/Caster.php
+++ b/src/Symfony/Component/VarDumper/Caster/Caster.php
@@ -56,7 +56,7 @@ public static function castObject($obj, $class, $hasDebugInfo = false)
         if ($hasDebugInfo) {
             $a = $obj->__debugInfo();
         } elseif ($obj instanceof \Closure) {
-            $a = array();
+            $a = [];
         } else {
             $a = (array) $obj;
         }
@@ -65,10 +65,10 @@ public static function castObject($obj, $class, $hasDebugInfo = false)
         }
 
         if ($a) {
-            static $publicProperties = array();
+            static $publicProperties = [];
 
             $i = 0;
-            $prefixedKeys = array();
+            $prefixedKeys = [];
             foreach ($a as $k => $v) {
                 if (isset($k[0]) ? "\0" !== $k[0] : \PHP_VERSION_ID >= 70200) {
                     if (!isset($publicProperties[$class])) {
@@ -109,7 +109,7 @@ public static function castObject($obj, $class, $hasDebugInfo = false)
      *
      * @return array The filtered array
      */
-    public static function filter(array $a, $filter, array $listedProperties = array(), &$count = 0)
+    public static function filter(array $a, $filter, array $listedProperties = [], &$count = 0)
     {
         $count = 0;
 
@@ -119,7 +119,7 @@ public static function filter(array $a, $filter, array $listedProperties = array
             if (null === $v) {
                 $type |= self::EXCLUDE_NULL & $filter;
                 $type |= self::EXCLUDE_EMPTY & $filter;
-            } elseif (false === $v || '' === $v || '0' === $v || 0 === $v || 0.0 === $v || array() === $v) {
+            } elseif (false === $v || '' === $v || '0' === $v || 0 === $v || 0.0 === $v || [] === $v) {
                 $type |= self::EXCLUDE_EMPTY & $filter;
             }
             if ((self::EXCLUDE_NOT_IMPORTANT & $filter) && !\in_array($k, $listedProperties, true)) {
diff --git a/src/Symfony/Component/VarDumper/Caster/ClassStub.php b/src/Symfony/Component/VarDumper/Caster/ClassStub.php
index 859c1ec4555e..1a85098e1581 100644
--- a/src/Symfony/Component/VarDumper/Caster/ClassStub.php
+++ b/src/Symfony/Component/VarDumper/Caster/ClassStub.php
@@ -37,16 +37,16 @@ public function __construct($identifier, $callable = null)
                 if ($callable instanceof \Closure) {
                     $r = new \ReflectionFunction($callable);
                 } elseif (\is_object($callable)) {
-                    $r = array($callable, '__invoke');
+                    $r = [$callable, '__invoke'];
                 } elseif (\is_array($callable)) {
                     $r = $callable;
                 } elseif (false !== $i = strpos($callable, '::')) {
-                    $r = array(substr($callable, 0, $i), substr($callable, 2 + $i));
+                    $r = [substr($callable, 0, $i), substr($callable, 2 + $i)];
                 } else {
                     $r = new \ReflectionFunction($callable);
                 }
             } elseif (0 < $i = strpos($identifier, '::') ?: strpos($identifier, '->')) {
-                $r = array(substr($identifier, 0, $i), substr($identifier, 2 + $i));
+                $r = [substr($identifier, 0, $i), substr($identifier, 2 + $i)];
             } else {
                 $r = new \ReflectionClass($identifier);
             }
diff --git a/src/Symfony/Component/VarDumper/Caster/DOMCaster.php b/src/Symfony/Component/VarDumper/Caster/DOMCaster.php
index 3a99865370ca..65151b4f4ff7 100644
--- a/src/Symfony/Component/VarDumper/Caster/DOMCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/DOMCaster.php
@@ -20,7 +20,7 @@
  */
 class DOMCaster
 {
-    private static $errorCodes = array(
+    private static $errorCodes = [
         DOM_PHP_ERR => 'DOM_PHP_ERR',
         DOM_INDEX_SIZE_ERR => 'DOM_INDEX_SIZE_ERR',
         DOMSTRING_SIZE_ERR => 'DOMSTRING_SIZE_ERR',
@@ -38,9 +38,9 @@ class DOMCaster
         DOM_NAMESPACE_ERR => 'DOM_NAMESPACE_ERR',
         DOM_INVALID_ACCESS_ERR => 'DOM_INVALID_ACCESS_ERR',
         DOM_VALIDATION_ERR => 'DOM_VALIDATION_ERR',
-    );
+    ];
 
-    private static $nodeTypes = array(
+    private static $nodeTypes = [
         XML_ELEMENT_NODE => 'XML_ELEMENT_NODE',
         XML_ATTRIBUTE_NODE => 'XML_ATTRIBUTE_NODE',
         XML_TEXT_NODE => 'XML_TEXT_NODE',
@@ -59,7 +59,7 @@ class DOMCaster
         XML_ATTRIBUTE_DECL_NODE => 'XML_ATTRIBUTE_DECL_NODE',
         XML_ENTITY_DECL_NODE => 'XML_ENTITY_DECL_NODE',
         XML_NAMESPACE_DECL_NODE => 'XML_NAMESPACE_DECL_NODE',
-    );
+    ];
 
     public static function castException(\DOMException $e, array $a, Stub $stub, $isNested)
     {
@@ -73,26 +73,26 @@ public static function castException(\DOMException $e, array $a, Stub $stub, $is
 
     public static function castLength($dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'length' => $dom->length,
-        );
+        ];
 
         return $a;
     }
 
     public static function castImplementation($dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'Core' => '1.0',
             Caster::PREFIX_VIRTUAL.'XML' => '2.0',
-        );
+        ];
 
         return $a;
     }
 
     public static function castNode(\DOMNode $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'nodeName' => $dom->nodeName,
             'nodeValue' => new CutStub($dom->nodeValue),
             'nodeType' => new ConstStub(self::$nodeTypes[$dom->nodeType], $dom->nodeType),
@@ -109,14 +109,14 @@ public static function castNode(\DOMNode $dom, array $a, Stub $stub, $isNested)
             'localName' => $dom->localName,
             'baseURI' => $dom->baseURI ? new LinkStub($dom->baseURI) : $dom->baseURI,
             'textContent' => new CutStub($dom->textContent),
-        );
+        ];
 
         return $a;
     }
 
     public static function castNameSpaceNode(\DOMNameSpaceNode $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'nodeName' => $dom->nodeName,
             'nodeValue' => new CutStub($dom->nodeValue),
             'nodeType' => new ConstStub(self::$nodeTypes[$dom->nodeType], $dom->nodeType),
@@ -125,14 +125,14 @@ public static function castNameSpaceNode(\DOMNameSpaceNode $dom, array $a, Stub
             'namespaceURI' => $dom->namespaceURI,
             'ownerDocument' => new CutStub($dom->ownerDocument),
             'parentNode' => new CutStub($dom->parentNode),
-        );
+        ];
 
         return $a;
     }
 
     public static function castDocument(\DOMDocument $dom, array $a, Stub $stub, $isNested, $filter = 0)
     {
-        $a += array(
+        $a += [
             'doctype' => $dom->doctype,
             'implementation' => $dom->implementation,
             'documentElement' => new CutStub($dom->documentElement),
@@ -152,12 +152,12 @@ public static function castDocument(\DOMDocument $dom, array $a, Stub $stub, $is
             'preserveWhiteSpace' => $dom->preserveWhiteSpace,
             'recover' => $dom->recover,
             'substituteEntities' => $dom->substituteEntities,
-        );
+        ];
 
         if (!($filter & Caster::EXCLUDE_VERBOSE)) {
             $formatOutput = $dom->formatOutput;
             $dom->formatOutput = true;
-            $a += array(Caster::PREFIX_VIRTUAL.'xml' => $dom->saveXML());
+            $a += [Caster::PREFIX_VIRTUAL.'xml' => $dom->saveXML()];
             $dom->formatOutput = $formatOutput;
         }
 
@@ -166,136 +166,136 @@ public static function castDocument(\DOMDocument $dom, array $a, Stub $stub, $is
 
     public static function castCharacterData(\DOMCharacterData $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'data' => $dom->data,
             'length' => $dom->length,
-        );
+        ];
 
         return $a;
     }
 
     public static function castAttr(\DOMAttr $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'name' => $dom->name,
             'specified' => $dom->specified,
             'value' => $dom->value,
             'ownerElement' => $dom->ownerElement,
             'schemaTypeInfo' => $dom->schemaTypeInfo,
-        );
+        ];
 
         return $a;
     }
 
     public static function castElement(\DOMElement $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'tagName' => $dom->tagName,
             'schemaTypeInfo' => $dom->schemaTypeInfo,
-        );
+        ];
 
         return $a;
     }
 
     public static function castText(\DOMText $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'wholeText' => $dom->wholeText,
-        );
+        ];
 
         return $a;
     }
 
     public static function castTypeinfo(\DOMTypeinfo $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'typeName' => $dom->typeName,
             'typeNamespace' => $dom->typeNamespace,
-        );
+        ];
 
         return $a;
     }
 
     public static function castDomError(\DOMDomError $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'severity' => $dom->severity,
             'message' => $dom->message,
             'type' => $dom->type,
             'relatedException' => $dom->relatedException,
             'related_data' => $dom->related_data,
             'location' => $dom->location,
-        );
+        ];
 
         return $a;
     }
 
     public static function castLocator(\DOMLocator $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'lineNumber' => $dom->lineNumber,
             'columnNumber' => $dom->columnNumber,
             'offset' => $dom->offset,
             'relatedNode' => $dom->relatedNode,
             'uri' => $dom->uri ? new LinkStub($dom->uri, $dom->lineNumber) : $dom->uri,
-        );
+        ];
 
         return $a;
     }
 
     public static function castDocumentType(\DOMDocumentType $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'name' => $dom->name,
             'entities' => $dom->entities,
             'notations' => $dom->notations,
             'publicId' => $dom->publicId,
             'systemId' => $dom->systemId,
             'internalSubset' => $dom->internalSubset,
-        );
+        ];
 
         return $a;
     }
 
     public static function castNotation(\DOMNotation $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'publicId' => $dom->publicId,
             'systemId' => $dom->systemId,
-        );
+        ];
 
         return $a;
     }
 
     public static function castEntity(\DOMEntity $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'publicId' => $dom->publicId,
             'systemId' => $dom->systemId,
             'notationName' => $dom->notationName,
             'actualEncoding' => $dom->actualEncoding,
             'encoding' => $dom->encoding,
             'version' => $dom->version,
-        );
+        ];
 
         return $a;
     }
 
     public static function castProcessingInstruction(\DOMProcessingInstruction $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'target' => $dom->target,
             'data' => $dom->data,
-        );
+        ];
 
         return $a;
     }
 
     public static function castXPath(\DOMXPath $dom, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             'document' => $dom->document,
-        );
+        ];
 
         return $a;
     }
diff --git a/src/Symfony/Component/VarDumper/Caster/DateCaster.php b/src/Symfony/Component/VarDumper/Caster/DateCaster.php
index 175d98655f24..3b030b734ae1 100644
--- a/src/Symfony/Component/VarDumper/Caster/DateCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/DateCaster.php
@@ -31,7 +31,7 @@ public static function castDateTime(\DateTimeInterface $d, array $a, Stub $stub,
             .($location ? ($d->format('I') ? "\nDST On" : "\nDST Off") : '')
         ;
 
-        $a = array();
+        $a = [];
         $a[$prefix.'date'] = new ConstStub(self::formatDateTime($d, $location ? ' e (P)' : ' P'), $title);
 
         $stub->class .= $d->format(' @U');
@@ -45,7 +45,7 @@ public static function castInterval(\DateInterval $interval, array $a, Stub $stu
         $numberOfSeconds = $now->add($interval)->getTimestamp() - $now->getTimestamp();
         $title = number_format($numberOfSeconds, 0, '.', ' ').'s';
 
-        $i = array(Caster::PREFIX_VIRTUAL.'interval' => new ConstStub(self::formatInterval($interval), $title));
+        $i = [Caster::PREFIX_VIRTUAL.'interval' => new ConstStub(self::formatInterval($interval), $title)];
 
         return $filter & Caster::EXCLUDE_VERBOSE ? $i : $i + $a;
     }
@@ -78,7 +78,7 @@ public static function castTimeZone(\DateTimeZone $timeZone, array $a, Stub $stu
         $formatted = (new \DateTime('now', $timeZone))->format($location ? 'e (P)' : 'P');
         $title = $location && \extension_loaded('intl') ? \Locale::getDisplayRegion('-'.$location['country_code'], \Locale::getDefault()) : '';
 
-        $z = array(Caster::PREFIX_VIRTUAL.'timezone' => new ConstStub($formatted, $title));
+        $z = [Caster::PREFIX_VIRTUAL.'timezone' => new ConstStub($formatted, $title)];
 
         return $filter & Caster::EXCLUDE_VERBOSE ? $z : $z + $a;
     }
@@ -89,7 +89,7 @@ public static function castPeriod(\DatePeriod $p, array $a, Stub $stub, $isNeste
             return $a;
         }
 
-        $dates = array();
+        $dates = [];
         if (\PHP_VERSION_ID >= 70107) { // see https://bugs.php.net/bug.php?id=74639
             foreach (clone $p as $i => $d) {
                 if (3 === $i) {
@@ -112,7 +112,7 @@ public static function castPeriod(\DatePeriod $p, array $a, Stub $stub, $isNeste
             ($end = $p->getEndDate()) ? 'to '.self::formatDateTime($end) : 'recurring '.$p->recurrences.' time/s'
         );
 
-        $p = array(Caster::PREFIX_VIRTUAL.'period' => new ConstStub($period, implode("\n", $dates)));
+        $p = [Caster::PREFIX_VIRTUAL.'period' => new ConstStub($period, implode("\n", $dates))];
 
         return $filter & Caster::EXCLUDE_VERBOSE ? $p : $p + $a;
     }
diff --git a/src/Symfony/Component/VarDumper/Caster/DoctrineCaster.php b/src/Symfony/Component/VarDumper/Caster/DoctrineCaster.php
index 785d0270d7b0..6adf9dd83762 100644
--- a/src/Symfony/Component/VarDumper/Caster/DoctrineCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/DoctrineCaster.php
@@ -25,7 +25,7 @@ class DoctrineCaster
 {
     public static function castCommonProxy(CommonProxy $proxy, array $a, Stub $stub, $isNested)
     {
-        foreach (array('__cloner__', '__initializer__') as $k) {
+        foreach (['__cloner__', '__initializer__'] as $k) {
             if (array_key_exists($k, $a)) {
                 unset($a[$k]);
                 ++$stub->cut;
@@ -37,7 +37,7 @@ public static function castCommonProxy(CommonProxy $proxy, array $a, Stub $stub,
 
     public static function castOrmProxy(OrmProxy $proxy, array $a, Stub $stub, $isNested)
     {
-        foreach (array('_entityPersister', '_identifier') as $k) {
+        foreach (['_entityPersister', '_identifier'] as $k) {
             if (array_key_exists($k = "\0Doctrine\\ORM\\Proxy\\Proxy\0".$k, $a)) {
                 unset($a[$k]);
                 ++$stub->cut;
@@ -49,7 +49,7 @@ public static function castOrmProxy(OrmProxy $proxy, array $a, Stub $stub, $isNe
 
     public static function castPersistentCollection(PersistentCollection $coll, array $a, Stub $stub, $isNested)
     {
-        foreach (array('snapshot', 'association', 'typeClass') as $k) {
+        foreach (['snapshot', 'association', 'typeClass'] as $k) {
             if (array_key_exists($k = "\0Doctrine\\ORM\\PersistentCollection\0".$k, $a)) {
                 $a[$k] = new CutStub($a[$k]);
             }
diff --git a/src/Symfony/Component/VarDumper/Caster/ExceptionCaster.php b/src/Symfony/Component/VarDumper/Caster/ExceptionCaster.php
index 49df71da7e31..e0acbe39dfe9 100644
--- a/src/Symfony/Component/VarDumper/Caster/ExceptionCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/ExceptionCaster.php
@@ -24,7 +24,7 @@ class ExceptionCaster
 {
     public static $srcContext = 1;
     public static $traceArgs = true;
-    public static $errorTypes = array(
+    public static $errorTypes = [
         E_DEPRECATED => 'E_DEPRECATED',
         E_USER_DEPRECATED => 'E_USER_DEPRECATED',
         E_RECOVERABLE_ERROR => 'E_RECOVERABLE_ERROR',
@@ -40,9 +40,9 @@ class ExceptionCaster
         E_USER_WARNING => 'E_USER_WARNING',
         E_USER_NOTICE => 'E_USER_NOTICE',
         E_STRICT => 'E_STRICT',
-    );
+    ];
 
-    private static $framesCache = array();
+    private static $framesCache = [];
 
     public static function castError(\Error $e, array $a, Stub $stub, $isNested, $filter = 0)
     {
@@ -92,10 +92,10 @@ public static function castSilencedErrorContext(SilencedErrorContext $e, array $
             $a[$s] = new ConstStub(self::$errorTypes[$a[$s]], $a[$s]);
         }
 
-        $trace = array(array(
+        $trace = [[
             'file' => $a[$sPrefix.'file'],
             'line' => $a[$sPrefix.'line'],
-        ));
+        ]];
 
         if (isset($a[$sPrefix.'trace'])) {
             $trace = array_merge($trace, $a[$sPrefix.'trace']);
@@ -117,16 +117,16 @@ public static function castTraceStub(TraceStub $trace, array $a, Stub $stub, $is
         $frames = $trace->value;
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        $a = array();
+        $a = [];
         $j = \count($frames);
         if (0 > $i = $trace->sliceOffset) {
             $i = max(0, $j + $i);
         }
         if (!isset($trace->value[$i])) {
-            return array();
+            return [];
         }
         $lastCall = isset($frames[$i]['function']) ? (isset($frames[$i]['class']) ? $frames[0]['class'].$frames[$i]['type'] : '').$frames[$i]['function'].'()' : '';
-        $frames[] = array('function' => '');
+        $frames[] = ['function' => ''];
         $collapse = false;
 
         for ($j += $trace->numberingOffset - $i++; isset($frames[$i]); ++$i, --$j) {
@@ -134,16 +134,16 @@ public static function castTraceStub(TraceStub $trace, array $a, Stub $stub, $is
             $call = isset($f['function']) ? (isset($f['class']) ? $f['class'].$f['type'] : '').$f['function'] : '???';
 
             $frame = new FrameStub(
-                array(
+                [
                     'object' => isset($f['object']) ? $f['object'] : null,
                     'class' => isset($f['class']) ? $f['class'] : null,
                     'type' => isset($f['type']) ? $f['type'] : null,
                     'function' => isset($f['function']) ? $f['function'] : null,
-                ) + $frames[$i - 1],
+                ] + $frames[$i - 1],
                 false,
                 true
             );
-            $f = self::castFrameStub($frame, array(), $frame, true);
+            $f = self::castFrameStub($frame, [], $frame, true);
             if (isset($f[$prefix.'src'])) {
                 foreach ($f[$prefix.'src']->value as $label => $frame) {
                     if (0 === strpos($label, "\0~collapse=0")) {
@@ -239,7 +239,7 @@ public static function castFrameStub(FrameStub $frame, array $a, Stub $stub, $is
                     $srcAttr .= '&separator=:';
                 }
                 $srcAttr .= $ellipsis ? '&ellipsis-type=path&ellipsis='.$ellipsis.'&ellipsis-tail='.$ellipsisTail : '';
-                self::$framesCache[$cacheKey] = $a[$prefix.'src'] = new EnumStub(array("\0~$srcAttr\0$srcKey" => $src));
+                self::$framesCache[$cacheKey] = $a[$prefix.'src'] = new EnumStub(["\0~$srcAttr\0$srcKey" => $src]);
             }
         }
 
@@ -265,7 +265,7 @@ private static function filterExceptionArray($xClass, array $a, $xPrefix, $filte
             $trace = $a[$xPrefix.'trace'];
             unset($a[$xPrefix.'trace']); // Ensures the trace is always last
         } else {
-            $trace = array();
+            $trace = [];
         }
 
         if (!($filter & Caster::EXCLUDE_VERBOSE) && $trace) {
@@ -291,23 +291,23 @@ private static function traceUnshift(&$trace, $class, $file, $line)
         if (isset($trace[0]['file'], $trace[0]['line']) && $trace[0]['file'] === $file && $trace[0]['line'] === $line) {
             return;
         }
-        array_unshift($trace, array(
+        array_unshift($trace, [
             'function' => $class ? 'new '.$class : null,
             'file' => $file,
             'line' => $line,
-        ));
+        ]);
     }
 
     private static function extractSource($srcLines, $line, $srcContext, $title, $lang, $file = null)
     {
         $srcLines = explode("\n", $srcLines);
-        $src = array();
+        $src = [];
 
         for ($i = $line - 1 - $srcContext; $i <= $line - 1 + $srcContext; ++$i) {
             $src[] = (isset($srcLines[$i]) ? $srcLines[$i] : '')."\n";
         }
 
-        $srcLines = array();
+        $srcLines = [];
         $ltrim = 0;
         do {
             $pad = null;
diff --git a/src/Symfony/Component/VarDumper/Caster/LinkStub.php b/src/Symfony/Component/VarDumper/Caster/LinkStub.php
index f32f3420a9c5..b589b502d4ce 100644
--- a/src/Symfony/Component/VarDumper/Caster/LinkStub.php
+++ b/src/Symfony/Component/VarDumper/Caster/LinkStub.php
@@ -66,7 +66,7 @@ public function __construct($label, $line = 0, $href = null)
     private function getComposerRoot($file, &$inVendor)
     {
         if (null === self::$vendorRoots) {
-            self::$vendorRoots = array();
+            self::$vendorRoots = [];
 
             foreach (get_declared_classes() as $class) {
                 if ('C' === $class[0] && 0 === strpos($class, 'ComposerAutoloaderInit')) {
diff --git a/src/Symfony/Component/VarDumper/Caster/PdoCaster.php b/src/Symfony/Component/VarDumper/Caster/PdoCaster.php
index 83a001d96080..8af51829a93f 100644
--- a/src/Symfony/Component/VarDumper/Caster/PdoCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/PdoCaster.php
@@ -20,53 +20,53 @@
  */
 class PdoCaster
 {
-    private static $pdoAttributes = array(
-        'CASE' => array(
+    private static $pdoAttributes = [
+        'CASE' => [
             \PDO::CASE_LOWER => 'LOWER',
             \PDO::CASE_NATURAL => 'NATURAL',
             \PDO::CASE_UPPER => 'UPPER',
-        ),
-        'ERRMODE' => array(
+        ],
+        'ERRMODE' => [
             \PDO::ERRMODE_SILENT => 'SILENT',
             \PDO::ERRMODE_WARNING => 'WARNING',
             \PDO::ERRMODE_EXCEPTION => 'EXCEPTION',
-        ),
+        ],
         'TIMEOUT',
         'PREFETCH',
         'AUTOCOMMIT',
         'PERSISTENT',
         'DRIVER_NAME',
         'SERVER_INFO',
-        'ORACLE_NULLS' => array(
+        'ORACLE_NULLS' => [
             \PDO::NULL_NATURAL => 'NATURAL',
             \PDO::NULL_EMPTY_STRING => 'EMPTY_STRING',
             \PDO::NULL_TO_STRING => 'TO_STRING',
-        ),
+        ],
         'CLIENT_VERSION',
         'SERVER_VERSION',
         'STATEMENT_CLASS',
         'EMULATE_PREPARES',
         'CONNECTION_STATUS',
         'STRINGIFY_FETCHES',
-        'DEFAULT_FETCH_MODE' => array(
+        'DEFAULT_FETCH_MODE' => [
             \PDO::FETCH_ASSOC => 'ASSOC',
             \PDO::FETCH_BOTH => 'BOTH',
             \PDO::FETCH_LAZY => 'LAZY',
             \PDO::FETCH_NUM => 'NUM',
             \PDO::FETCH_OBJ => 'OBJ',
-        ),
-    );
+        ],
+    ];
 
     public static function castPdo(\PDO $c, array $a, Stub $stub, $isNested)
     {
-        $attr = array();
+        $attr = [];
         $errmode = $c->getAttribute(\PDO::ATTR_ERRMODE);
         $c->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
 
         foreach (self::$pdoAttributes as $k => $v) {
             if (!isset($k[0])) {
                 $k = $v;
-                $v = array();
+                $v = [];
             }
 
             try {
@@ -85,11 +85,11 @@ public static function castPdo(\PDO $c, array $a, Stub $stub, $isNested)
         }
 
         $prefix = Caster::PREFIX_VIRTUAL;
-        $a += array(
+        $a += [
             $prefix.'inTransaction' => method_exists($c, 'inTransaction'),
             $prefix.'errorInfo' => $c->errorInfo(),
             $prefix.'attributes' => new EnumStub($attr),
-        );
+        ];
 
         if ($a[$prefix.'inTransaction']) {
             $a[$prefix.'inTransaction'] = $c->inTransaction();
diff --git a/src/Symfony/Component/VarDumper/Caster/PgSqlCaster.php b/src/Symfony/Component/VarDumper/Caster/PgSqlCaster.php
index 88414e4ccff2..cd6bf5b5fe66 100644
--- a/src/Symfony/Component/VarDumper/Caster/PgSqlCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/PgSqlCaster.php
@@ -20,7 +20,7 @@
  */
 class PgSqlCaster
 {
-    private static $paramCodes = array(
+    private static $paramCodes = [
         'server_encoding',
         'client_encoding',
         'is_superuser',
@@ -31,17 +31,17 @@ class PgSqlCaster
         'integer_datetimes',
         'application_name',
         'standard_conforming_strings',
-    );
+    ];
 
-    private static $transactionStatus = array(
+    private static $transactionStatus = [
         PGSQL_TRANSACTION_IDLE => 'PGSQL_TRANSACTION_IDLE',
         PGSQL_TRANSACTION_ACTIVE => 'PGSQL_TRANSACTION_ACTIVE',
         PGSQL_TRANSACTION_INTRANS => 'PGSQL_TRANSACTION_INTRANS',
         PGSQL_TRANSACTION_INERROR => 'PGSQL_TRANSACTION_INERROR',
         PGSQL_TRANSACTION_UNKNOWN => 'PGSQL_TRANSACTION_UNKNOWN',
-    );
+    ];
 
-    private static $resultStatus = array(
+    private static $resultStatus = [
         PGSQL_EMPTY_QUERY => 'PGSQL_EMPTY_QUERY',
         PGSQL_COMMAND_OK => 'PGSQL_COMMAND_OK',
         PGSQL_TUPLES_OK => 'PGSQL_TUPLES_OK',
@@ -50,9 +50,9 @@ class PgSqlCaster
         PGSQL_BAD_RESPONSE => 'PGSQL_BAD_RESPONSE',
         PGSQL_NONFATAL_ERROR => 'PGSQL_NONFATAL_ERROR',
         PGSQL_FATAL_ERROR => 'PGSQL_FATAL_ERROR',
-    );
+    ];
 
-    private static $diagCodes = array(
+    private static $diagCodes = [
         'severity' => PGSQL_DIAG_SEVERITY,
         'sqlstate' => PGSQL_DIAG_SQLSTATE,
         'message' => PGSQL_DIAG_MESSAGE_PRIMARY,
@@ -65,7 +65,7 @@ class PgSqlCaster
         'file' => PGSQL_DIAG_SOURCE_FILE,
         'line' => PGSQL_DIAG_SOURCE_LINE,
         'function' => PGSQL_DIAG_SOURCE_FUNCTION,
-    );
+    ];
 
     public static function castLargeObject($lo, array $a, Stub $stub, $isNested)
     {
@@ -127,14 +127,14 @@ public static function castResult($result, array $a, Stub $stub, $isNested)
         $fields = pg_num_fields($result);
 
         for ($i = 0; $i < $fields; ++$i) {
-            $field = array(
+            $field = [
                 'name' => pg_field_name($result, $i),
                 'table' => sprintf('%s (OID: %s)', pg_field_table($result, $i), pg_field_table($result, $i, true)),
                 'type' => sprintf('%s (OID: %s)', pg_field_type($result, $i), pg_field_type_oid($result, $i)),
                 'nullable' => (bool) pg_field_is_null($result, $i),
                 'storage' => pg_field_size($result, $i).' bytes',
                 'display' => pg_field_prtlen($result, $i).' chars',
-            );
+            ];
             if (' (OID: )' === $field['table']) {
                 $field['table'] = null;
             }
diff --git a/src/Symfony/Component/VarDumper/Caster/RedisCaster.php b/src/Symfony/Component/VarDumper/Caster/RedisCaster.php
index 409a0d48a142..1e2fb3991629 100644
--- a/src/Symfony/Component/VarDumper/Caster/RedisCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/RedisCaster.php
@@ -20,11 +20,11 @@
  */
 class RedisCaster
 {
-    private static $serializer = array(
+    private static $serializer = [
         \Redis::SERIALIZER_NONE => 'NONE',
         \Redis::SERIALIZER_PHP => 'PHP',
         2 => 'IGBINARY', // Optional Redis::SERIALIZER_IGBINARY
-    );
+    ];
 
     public static function castRedis(\Redis $c, array $a, Stub $stub, $isNested)
     {
@@ -40,15 +40,15 @@ public static function castRedis(\Redis $c, array $a, Stub $stub, $isNested)
         }
 
         if (!$connected = $c->isConnected()) {
-            return $a + array(
+            return $a + [
                 $prefix.'isConnected' => $connected,
-            );
+            ];
         }
 
         $ser = $c->getOption(\Redis::OPT_SERIALIZER);
         $retry = \defined('Redis::OPT_SCAN') ? $c->getOption(\Redis::OPT_SCAN) : 0;
 
-        return $a + array(
+        return $a + [
             $prefix.'isConnected' => $connected,
             $prefix.'host' => $c->getHost(),
             $prefix.'port' => $c->getPort(),
@@ -56,22 +56,22 @@ public static function castRedis(\Redis $c, array $a, Stub $stub, $isNested)
             $prefix.'dbNum' => $c->getDbNum(),
             $prefix.'timeout' => $c->getTimeout(),
             $prefix.'persistentId' => $c->getPersistentID(),
-            $prefix.'options' => new EnumStub(array(
+            $prefix.'options' => new EnumStub([
                 'READ_TIMEOUT' => $c->getOption(\Redis::OPT_READ_TIMEOUT),
                 'SERIALIZER' => isset(self::$serializer[$ser]) ? new ConstStub(self::$serializer[$ser], $ser) : $ser,
                 'PREFIX' => $c->getOption(\Redis::OPT_PREFIX),
                 'SCAN' => new ConstStub($retry ? 'RETRY' : 'NORETRY', $retry),
-            )),
-        );
+            ]),
+        ];
     }
 
     public static function castRedisArray(\RedisArray $c, array $a, Stub $stub, $isNested)
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        return $a + array(
+        return $a + [
             $prefix.'hosts' => $c->_hosts(),
             $prefix.'function' => ClassStub::wrapCallable($c->_function()),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
index 9bfef06983d3..1543bbfdfa00 100644
--- a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
@@ -20,7 +20,7 @@
  */
 class ReflectionCaster
 {
-    private static $extraMap = array(
+    private static $extraMap = [
         'docComment' => 'getDocComment',
         'extension' => 'getExtensionName',
         'isDisabled' => 'isDisabled',
@@ -29,7 +29,7 @@ class ReflectionCaster
         'isUserDefined' => 'isUserDefined',
         'isGenerator' => 'isGenerator',
         'isVariadic' => 'isVariadic',
-    );
+    ];
 
     public static function castClosure(\Closure $c, array $a, Stub $stub, $isNested, $filter = 0)
     {
@@ -47,8 +47,8 @@ public static function castClosure(\Closure $c, array $a, Stub $stub, $isNested,
         if (isset($a[$prefix.'parameters'])) {
             foreach ($a[$prefix.'parameters']->value as &$v) {
                 $param = $v;
-                $v = new EnumStub(array());
-                foreach (static::castParameter($param, array(), $stub, true) as $k => $param) {
+                $v = new EnumStub([]);
+                foreach (static::castParameter($param, [], $stub, true) as $k => $param) {
                     if ("\0" === $k[0]) {
                         $v->value[substr($k, 3)] = $param;
                     }
@@ -90,11 +90,11 @@ public static function castType(\ReflectionType $c, array $a, Stub $stub, $isNes
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        $a += array(
+        $a += [
             $prefix.'name' => $c instanceof \ReflectionNamedType ? $c->getName() : $c->__toString(),
             $prefix.'allowsNull' => $c->allowsNull(),
             $prefix.'isBuiltin' => $c->isBuiltin(),
-        );
+        ];
 
         return $a;
     }
@@ -107,28 +107,28 @@ public static function castReflectionGenerator(\ReflectionGenerator $c, array $a
             $a[$prefix.'this'] = new CutStub($c->getThis());
         }
         $function = $c->getFunction();
-        $frame = array(
+        $frame = [
             'class' => isset($function->class) ? $function->class : null,
             'type' => isset($function->class) ? ($function->isStatic() ? '::' : '->') : null,
             'function' => $function->name,
             'file' => $c->getExecutingFile(),
             'line' => $c->getExecutingLine(),
-        );
+        ];
         if ($trace = $c->getTrace(DEBUG_BACKTRACE_IGNORE_ARGS)) {
             $function = new \ReflectionGenerator($c->getExecutingGenerator());
-            array_unshift($trace, array(
+            array_unshift($trace, [
                 'function' => 'yield',
                 'file' => $function->getExecutingFile(),
                 'line' => $function->getExecutingLine() - 1,
-            ));
+            ]);
             $trace[] = $frame;
             $a[$prefix.'trace'] = new TraceStub($trace, false, 0, -1, -1);
         } else {
             $function = new FrameStub($frame, false, true);
-            $function = ExceptionCaster::castFrameStub($function, array(), $function, true);
-            $a[$prefix.'executing'] = new EnumStub(array(
+            $function = ExceptionCaster::castFrameStub($function, [], $function, true);
+            $a[$prefix.'executing'] = new EnumStub([
                 "\0~separator= \0".$frame['class'].$frame['type'].$frame['function'].'()' => $function[$prefix.'src'],
-            ));
+            ]);
         }
 
         $a[Caster::PREFIX_VIRTUAL.'closed'] = false;
@@ -144,11 +144,11 @@ public static function castClass(\ReflectionClass $c, array $a, Stub $stub, $isN
             $a[$prefix.'modifiers'] = implode(' ', $n);
         }
 
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'extends' => 'getParentClass',
             'implements' => 'getInterfaceNames',
             'constants' => 'getConstants',
-        ));
+        ]);
 
         foreach ($c->getProperties() as $n) {
             $a[$prefix.'properties'][$n->name] = $n;
@@ -169,17 +169,17 @@ public static function castFunctionAbstract(\ReflectionFunctionAbstract $c, arra
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'returnsReference' => 'returnsReference',
             'returnType' => 'getReturnType',
             'class' => 'getClosureScopeClass',
             'this' => 'getClosureThis',
-        ));
+        ]);
 
         if (isset($a[$prefix.'returnType'])) {
             $v = $a[$prefix.'returnType'];
             $v = $v instanceof \ReflectionNamedType ? $v->getName() : $v->__toString();
-            $a[$prefix.'returnType'] = new ClassStub($a[$prefix.'returnType']->allowsNull() ? '?'.$v : $v, array(class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', ''));
+            $a[$prefix.'returnType'] = new ClassStub($a[$prefix.'returnType']->allowsNull() ? '?'.$v : $v, [class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', '']);
         }
         if (isset($a[$prefix.'class'])) {
             $a[$prefix.'class'] = new ClassStub($a[$prefix.'class']);
@@ -238,12 +238,12 @@ public static function castParameter(\ReflectionParameter $c, array $a, Stub $st
         // Added by HHVM
         unset($a['info']);
 
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'position' => 'getPosition',
             'isVariadic' => 'isVariadic',
             'byReference' => 'isPassedByReference',
             'allowsNull' => 'allowsNull',
-        ));
+        ]);
 
         if (method_exists($c, 'getType')) {
             if ($v = $c->getType()) {
@@ -255,7 +255,7 @@ public static function castParameter(\ReflectionParameter $c, array $a, Stub $st
 
         if (isset($a[$prefix.'typeHint'])) {
             $v = $a[$prefix.'typeHint'];
-            $a[$prefix.'typeHint'] = new ClassStub($v, array(class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', ''));
+            $a[$prefix.'typeHint'] = new ClassStub($v, [class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', '']);
         } else {
             unset($a[$prefix.'allowsNull']);
         }
@@ -288,7 +288,7 @@ public static function castProperty(\ReflectionProperty $c, array $a, Stub $stub
 
     public static function castExtension(\ReflectionExtension $c, array $a, Stub $stub, $isNested)
     {
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'version' => 'getVersion',
             'dependencies' => 'getDependencies',
             'iniEntries' => 'getIniEntries',
@@ -297,26 +297,26 @@ public static function castExtension(\ReflectionExtension $c, array $a, Stub $st
             'constants' => 'getConstants',
             'functions' => 'getFunctions',
             'classes' => 'getClasses',
-        ));
+        ]);
 
         return $a;
     }
 
     public static function castZendExtension(\ReflectionZendExtension $c, array $a, Stub $stub, $isNested)
     {
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'version' => 'getVersion',
             'author' => 'getAuthor',
             'copyright' => 'getCopyright',
             'url' => 'getURL',
-        ));
+        ]);
 
         return $a;
     }
 
     private static function addExtra(&$a, \Reflector $c)
     {
-        $x = isset($a[Caster::PREFIX_VIRTUAL.'extra']) ? $a[Caster::PREFIX_VIRTUAL.'extra']->value : array();
+        $x = isset($a[Caster::PREFIX_VIRTUAL.'extra']) ? $a[Caster::PREFIX_VIRTUAL.'extra']->value : [];
 
         if (method_exists($c, 'getFileName') && $m = $c->getFileName()) {
             $x['file'] = new LinkStub($m, $c->getStartLine());
diff --git a/src/Symfony/Component/VarDumper/Caster/SplCaster.php b/src/Symfony/Component/VarDumper/Caster/SplCaster.php
index 0780c0a37148..a223adb7f2ca 100644
--- a/src/Symfony/Component/VarDumper/Caster/SplCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/SplCaster.php
@@ -20,12 +20,12 @@
  */
 class SplCaster
 {
-    private static $splFileObjectFlags = array(
+    private static $splFileObjectFlags = [
         \SplFileObject::DROP_NEW_LINE => 'DROP_NEW_LINE',
         \SplFileObject::READ_AHEAD => 'READ_AHEAD',
         \SplFileObject::SKIP_EMPTY => 'SKIP_EMPTY',
         \SplFileObject::READ_CSV => 'READ_CSV',
-    );
+    ];
 
     public static function castArrayObject(\ArrayObject $c, array $a, Stub $stub, $isNested)
     {
@@ -39,9 +39,9 @@ public static function castArrayIterator(\ArrayIterator $c, array $a, Stub $stub
 
     public static function castHeap(\Iterator $c, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'heap' => iterator_to_array(clone $c),
-        );
+        ];
 
         return $a;
     }
@@ -52,10 +52,10 @@ public static function castDoublyLinkedList(\SplDoublyLinkedList $c, array $a, S
         $mode = $c->getIteratorMode();
         $c->setIteratorMode(\SplDoublyLinkedList::IT_MODE_KEEP | $mode & ~\SplDoublyLinkedList::IT_MODE_DELETE);
 
-        $a += array(
+        $a += [
             $prefix.'mode' => new ConstStub((($mode & \SplDoublyLinkedList::IT_MODE_LIFO) ? 'IT_MODE_LIFO' : 'IT_MODE_FIFO').' | '.(($mode & \SplDoublyLinkedList::IT_MODE_DELETE) ? 'IT_MODE_DELETE' : 'IT_MODE_KEEP'), $mode),
             $prefix.'dllist' => iterator_to_array($c),
-        );
+        ];
         $c->setIteratorMode($mode);
 
         return $a;
@@ -63,7 +63,7 @@ public static function castDoublyLinkedList(\SplDoublyLinkedList $c, array $a, S
 
     public static function castFileInfo(\SplFileInfo $c, array $a, Stub $stub, $isNested)
     {
-        static $map = array(
+        static $map = [
             'path' => 'getPath',
             'filename' => 'getFilename',
             'basename' => 'getBasename',
@@ -86,7 +86,7 @@ public static function castFileInfo(\SplFileInfo $c, array $a, Stub $stub, $isNe
             'dir' => 'isDir',
             'link' => 'isLink',
             'linkTarget' => 'getLinkTarget',
-        );
+        ];
 
         $prefix = Caster::PREFIX_VIRTUAL;
 
@@ -105,7 +105,7 @@ public static function castFileInfo(\SplFileInfo $c, array $a, Stub $stub, $isNe
             $a[$prefix.'perms'] = new ConstStub(sprintf('0%o', $a[$prefix.'perms']), $a[$prefix.'perms']);
         }
 
-        static $mapDate = array('aTime', 'mTime', 'cTime');
+        static $mapDate = ['aTime', 'mTime', 'cTime'];
         foreach ($mapDate as $key) {
             if (isset($a[$prefix.$key])) {
                 $a[$prefix.$key] = new ConstStub(date('Y-m-d H:i:s', $a[$prefix.$key]), $a[$prefix.$key]);
@@ -117,14 +117,14 @@ public static function castFileInfo(\SplFileInfo $c, array $a, Stub $stub, $isNe
 
     public static function castFileObject(\SplFileObject $c, array $a, Stub $stub, $isNested)
     {
-        static $map = array(
+        static $map = [
             'csvControl' => 'getCsvControl',
             'flags' => 'getFlags',
             'maxLineLen' => 'getMaxLineLen',
             'fstat' => 'fstat',
             'eof' => 'eof',
             'key' => 'key',
-        );
+        ];
 
         $prefix = Caster::PREFIX_VIRTUAL;
 
@@ -136,7 +136,7 @@ public static function castFileObject(\SplFileObject $c, array $a, Stub $stub, $
         }
 
         if (isset($a[$prefix.'flags'])) {
-            $flagsArray = array();
+            $flagsArray = [];
             foreach (self::$splFileObjectFlags as $value => $name) {
                 if ($a[$prefix.'flags'] & $value) {
                     $flagsArray[] = $name;
@@ -146,7 +146,7 @@ public static function castFileObject(\SplFileObject $c, array $a, Stub $stub, $
         }
 
         if (isset($a[$prefix.'fstat'])) {
-            $a[$prefix.'fstat'] = new CutArrayStub($a[$prefix.'fstat'], array('dev', 'ino', 'nlink', 'rdev', 'blksize', 'blocks'));
+            $a[$prefix.'fstat'] = new CutArrayStub($a[$prefix.'fstat'], ['dev', 'ino', 'nlink', 'rdev', 'blksize', 'blocks']);
         }
 
         return $a;
@@ -154,29 +154,29 @@ public static function castFileObject(\SplFileObject $c, array $a, Stub $stub, $
 
     public static function castFixedArray(\SplFixedArray $c, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'storage' => $c->toArray(),
-        );
+        ];
 
         return $a;
     }
 
     public static function castObjectStorage(\SplObjectStorage $c, array $a, Stub $stub, $isNested)
     {
-        $storage = array();
+        $storage = [];
         unset($a[Caster::PREFIX_DYNAMIC."\0gcdata"]); // Don't hit https://bugs.php.net/65967
 
         $clone = clone $c;
         foreach ($clone as $obj) {
-            $storage[] = array(
+            $storage[] = [
                 'object' => $obj,
                 'info' => $clone->getInfo(),
-             );
+             ];
         }
 
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'storage' => $storage,
-        );
+        ];
 
         return $a;
     }
@@ -199,10 +199,10 @@ private static function castSplArray($c, array $a, Stub $stub, $isNested)
             $a = Caster::castObject($c, $class);
             $c->setFlags($flags);
         }
-        $a += array(
+        $a += [
             $prefix.'flag::STD_PROP_LIST' => (bool) ($flags & \ArrayObject::STD_PROP_LIST),
             $prefix.'flag::ARRAY_AS_PROPS' => (bool) ($flags & \ArrayObject::ARRAY_AS_PROPS),
-        );
+        ];
         if ($c instanceof \ArrayObject) {
             $a[$prefix.'iteratorClass'] = new ClassStub($c->getIteratorClass());
         }
diff --git a/src/Symfony/Component/VarDumper/Caster/StubCaster.php b/src/Symfony/Component/VarDumper/Caster/StubCaster.php
index b0bf5dc80d64..9927d42610c1 100644
--- a/src/Symfony/Component/VarDumper/Caster/StubCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/StubCaster.php
@@ -35,7 +35,7 @@ public static function castStub(Stub $c, array $a, Stub $stub, $isNested)
                 $stub->class = Stub::STRING_BINARY;
             }
 
-            $a = array();
+            $a = [];
         }
 
         return $a;
@@ -51,7 +51,7 @@ public static function cutInternals($obj, array $a, Stub $stub, $isNested)
         if ($isNested) {
             $stub->cut += \count($a);
 
-            return array();
+            return [];
         }
 
         return $a;
@@ -66,7 +66,7 @@ public static function castEnum(EnumStub $c, array $a, Stub $stub, $isNested)
             $stub->cut = $c->cut;
             $stub->attr = $c->attr;
 
-            $a = array();
+            $a = [];
 
             if ($c->value) {
                 foreach (array_keys($c->value) as $k) {
diff --git a/src/Symfony/Component/VarDumper/Caster/SymfonyCaster.php b/src/Symfony/Component/VarDumper/Caster/SymfonyCaster.php
index 5d9decb67aeb..ae7134f55b2a 100644
--- a/src/Symfony/Component/VarDumper/Caster/SymfonyCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/SymfonyCaster.php
@@ -16,14 +16,14 @@
 
 class SymfonyCaster
 {
-    private static $requestGetters = array(
+    private static $requestGetters = [
         'pathInfo' => 'getPathInfo',
         'requestUri' => 'getRequestUri',
         'baseUrl' => 'getBaseUrl',
         'basePath' => 'getBasePath',
         'method' => 'getMethod',
         'format' => 'getRequestFormat',
-    );
+    ];
 
     public static function castRequest(Request $request, array $a, Stub $stub, $isNested)
     {
diff --git a/src/Symfony/Component/VarDumper/Caster/XmlReaderCaster.php b/src/Symfony/Component/VarDumper/Caster/XmlReaderCaster.php
index 19b26e69c6a9..3ae9ec0ba19a 100644
--- a/src/Symfony/Component/VarDumper/Caster/XmlReaderCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/XmlReaderCaster.php
@@ -19,7 +19,7 @@
  */
 class XmlReaderCaster
 {
-    private static $nodeTypes = array(
+    private static $nodeTypes = [
         \XMLReader::NONE => 'NONE',
         \XMLReader::ELEMENT => 'ELEMENT',
         \XMLReader::ATTRIBUTE => 'ATTRIBUTE',
@@ -38,12 +38,12 @@ class XmlReaderCaster
         \XMLReader::END_ELEMENT => 'END_ELEMENT',
         \XMLReader::END_ENTITY => 'END_ENTITY',
         \XMLReader::XML_DECLARATION => 'XML_DECLARATION',
-    );
+    ];
 
     public static function castXmlReader(\XMLReader $reader, array $a, Stub $stub, $isNested)
     {
         $props = Caster::PREFIX_VIRTUAL.'parserProperties';
-        $info = array(
+        $info = [
             'localName' => $reader->localName,
             'prefix' => $reader->prefix,
             'nodeType' => new Co
10000
nstStub(self::$nodeTypes[$reader->nodeType], $reader->nodeType),
@@ -55,20 +55,20 @@ public static function castXmlReader(\XMLReader $reader, array $a, Stub $stub, $
             'value' => $reader->value,
             'namespaceURI' => $reader->namespaceURI,
             'baseURI' => $reader->baseURI ? new LinkStub($reader->baseURI) : $reader->baseURI,
-            $props => array(
+            $props => [
                 'LOADDTD' => $reader->getParserProperty(\XMLReader::LOADDTD),
                 'DEFAULTATTRS' => $reader->getParserProperty(\XMLReader::DEFAULTATTRS),
                 'VALIDATE' => $reader->getParserProperty(\XMLReader::VALIDATE),
                 'SUBST_ENTITIES' => $reader->getParserProperty(\XMLReader::SUBST_ENTITIES),
-            ),
-        );
+            ],
+        ];
 
-        if ($info[$props] = Caster::filter($info[$props], Caster::EXCLUDE_EMPTY, array(), $count)) {
+        if ($info[$props] = Caster::filter($info[$props], Caster::EXCLUDE_EMPTY, [], $count)) {
             $info[$props] = new EnumStub($info[$props]);
             $info[$props]->cut = $count;
         }
 
-        $info = Caster::filter($info, Caster::EXCLUDE_EMPTY, array(), $count);
+        $info = Caster::filter($info, Caster::EXCLUDE_EMPTY, [], $count);
         // +2 because hasValue and hasAttributes are always filtered
         $stub->cut += $count + 2;
 
diff --git a/src/Symfony/Component/VarDumper/Caster/XmlResourceCaster.php b/src/Symfony/Component/VarDumper/Caster/XmlResourceCaster.php
index 5d0207ee81da..117138c7848c 100644
--- a/src/Symfony/Component/VarDumper/Caster/XmlResourceCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/XmlResourceCaster.php
@@ -20,7 +20,7 @@
  */
 class XmlResourceCaster
 {
-    private static $xmlErrors = array(
+    private static $xmlErrors = [
         XML_ERROR_NONE => 'XML_ERROR_NONE',
         XML_ERROR_NO_MEMORY => 'XML_ERROR_NO_MEMORY',
         XML_ERROR_SYNTAX => 'XML_ERROR_SYNTAX',
@@ -43,7 +43,7 @@ class XmlResourceCaster
         XML_ERROR_INCORRECT_ENCODING => 'XML_ERROR_INCORRECT_ENCODING',
         XML_ERROR_UNCLOSED_CDATA_SECTION => 'XML_ERROR_UNCLOSED_CDATA_SECTION',
         XML_ERROR_EXTERNAL_ENTITY_HANDLING => 'XML_ERROR_EXTERNAL_ENTITY_HANDLING',
-    );
+    ];
 
     public static function castXml($h, array $a, Stub $stub, $isNested)
     {
diff --git a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
index 5501fc6983cb..de09f1803da8 100644
--- a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
+++ b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
@@ -21,124 +21,124 @@
  */
 abstract class AbstractCloner implements ClonerInterface
 {
-    public static $defaultCasters = array(
-        '__PHP_Incomplete_Class' => array('Symfony\Component\VarDumper\Caster\Caster', 'castPhpIncompleteClass'),
-
-        'Symfony\Component\VarDumper\Caster\CutStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'),
-        'Symfony\Component\VarDumper\Caster\CutArrayStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castCutArray'),
-        'Symfony\Component\VarDumper\Caster\ConstStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'),
-        'Symfony\Component\VarDumper\Caster\EnumStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castEnum'),
-
-        'Closure' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClosure'),
-        'Generator' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castGenerator'),
-        'ReflectionType' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castType'),
-        'ReflectionGenerator' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castReflectionGenerator'),
-        'ReflectionClass' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClass'),
-        'ReflectionFunctionAbstract' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castFunctionAbstract'),
-        'ReflectionMethod' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castMethod'),
-        'ReflectionParameter' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castParameter'),
-        'ReflectionProperty' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castProperty'),
-        'ReflectionExtension' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castExtension'),
-        'ReflectionZendExtension' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castZendExtension'),
-
-        'Doctrine\Common\Persistence\ObjectManager' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Doctrine\Common\Proxy\Proxy' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castCommonProxy'),
-        'Doctrine\ORM\Proxy\Proxy' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castOrmProxy'),
-        'Doctrine\ORM\PersistentCollection' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castPersistentCollection'),
-
-        'DOMException' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castException'),
-        'DOMStringList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNameList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMImplementation' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castImplementation'),
-        'DOMImplementationList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNode' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNode'),
-        'DOMNameSpaceNode' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNameSpaceNode'),
-        'DOMDocument' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocument'),
-        'DOMNodeList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNamedNodeMap' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMCharacterData' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castCharacterData'),
-        'DOMAttr' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castAttr'),
-        'DOMElement' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castElement'),
-        'DOMText' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castText'),
-        'DOMTypeinfo' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castTypeinfo'),
-        'DOMDomError' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDomError'),
-        'DOMLocator' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLocator'),
-        'DOMDocumentType' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocumentType'),
-        'DOMNotation' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNotation'),
-        'DOMEntity' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castEntity'),
-        'DOMProcessingInstruction' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castProcessingInstruction'),
-        'DOMXPath' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castXPath'),
-
-        'XmlReader' => array('Symfony\Component\VarDumper\Caster\XmlReaderCaster', 'castXmlReader'),
-
-        'ErrorException' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castErrorException'),
-        'Exception' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castException'),
-        'Error' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castError'),
-        'Symfony\Component\DependencyInjection\ContainerInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Symfony\Component\HttpFoundation\Request' => array('Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castRequest'),
-        'Symfony\Component\VarDumper\Exception\ThrowingCasterException' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castThrowingCasterException'),
-        'Symfony\Component\VarDumper\Caster\TraceStub' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castTraceStub'),
-        'Symfony\Component\VarDumper\Caster\FrameStub' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castFrameStub'),
-        'Symfony\Component\Debug\Exception\SilencedErrorContext' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castSilencedErrorContext'),
-
-        'PHPUnit_Framework_MockObject_MockObject' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Prophecy\Prophecy\ProphecySubjectInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Mockery\MockInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-
-        'PDO' => array('Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdo'),
-        'PDOStatement' => array('Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdoStatement'),
-
-        'AMQPConnection' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castConnection'),
-        'AMQPChannel' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castChannel'),
-        'AMQPQueue' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castQueue'),
-        'AMQPExchange' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castExchange'),
-        'AMQPEnvelope' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castEnvelope'),
-
-        'ArrayObject' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayObject'),
-        'ArrayIterator' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayIterator'),
-        'SplDoublyLinkedList' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castDoublyLinkedList'),
-        'SplFileInfo' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFileInfo'),
-        'SplFileObject' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFileObject'),
-        'SplFixedArray' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFixedArray'),
-        'SplHeap' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'),
-        'SplObjectStorage' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castObjectStorage'),
-        'SplPriorityQueue' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'),
-        'OuterIterator' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castOuterIterator'),
-
-        'MongoCursorInterface' => array('Symfony\Component\VarDumper\Caster\MongoCaster', 'castCursor'),
-
-        'Redis' => array('Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedis'),
-        'RedisArray' => array('Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisArray'),
-
-        'DateTimeInterface' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castDateTime'),
-        'DateInterval' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castInterval'),
-        'DateTimeZone' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castTimeZone'),
-        'DatePeriod' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castPeriod'),
-
-        ':curl' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castCurl'),
-        ':dba' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'),
-        ':dba persistent' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'),
-        ':gd' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castGd'),
-        ':mysql link' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castMysqlLink'),
-        ':pgsql large object' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLargeObject'),
-        ':pgsql link' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'),
-        ':pgsql link persistent' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'),
-        ':pgsql result' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castResult'),
-        ':process' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castProcess'),
-        ':stream' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'),
-        ':persistent stream' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'),
-        ':stream-context' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStreamContext'),
-        ':xml' => array('Symfony\Component\VarDumper\Caster\XmlResourceCaster', 'castXml'),
-    );
+    public static $defaultCasters = [
+        '__PHP_Incomplete_Class' => ['Symfony\Component\VarDumper\Caster\Caster', 'castPhpIncompleteClass'],
+
+        'Symfony\Component\VarDumper\Caster\CutStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'],
+        'Symfony\Component\VarDumper\Caster\CutArrayStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castCutArray'],
+        'Symfony\Component\VarDumper\Caster\ConstStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'],
+        'Symfony\Component\VarDumper\Caster\EnumStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castEnum'],
+
+        'Closure' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClosure'],
+        'Generator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castGenerator'],
+        'ReflectionType' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castType'],
+        'ReflectionGenerator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castReflectionGenerator'],
+        'ReflectionClass' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClass'],
+        'ReflectionFunctionAbstract' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castFunctionAbstract'],
+        'ReflectionMethod' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castMethod'],
+        'ReflectionParameter' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castParameter'],
+        'ReflectionProperty' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castProperty'],
+        'ReflectionExtension' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castExtension'],
+        'ReflectionZendExtension' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castZendExtension'],
+
+        'Doctrine\Common\Persistence\ObjectManager' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Doctrine\Common\Proxy\Proxy' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castCommonProxy'],
+        'Doctrine\ORM\Proxy\Proxy' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castOrmProxy'],
+        'Doctrine\ORM\PersistentCollection' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castPersistentCollection'],
+
+        'DOMException' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castException'],
+        'DOMStringList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNameList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMImplementation' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castImplementation'],
+        'DOMImplementationList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNode' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNode'],
+        'DOMNameSpaceNode' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNameSpaceNode'],
+        'DOMDocument' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocument'],
+        'DOMNodeList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNamedNodeMap' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMCharacterData' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castCharacterData'],
+        'DOMAttr' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castAttr'],
+        'DOMElement' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castElement'],
+        'DOMText' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castText'],
+        'DOMTypeinfo' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castTypeinfo'],
+        'DOMDomError' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDomError'],
+        'DOMLocator' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLocator'],
+        'DOMDocumentType' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocumentType'],
+        'DOMNotation' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNotation'],
+        'DOMEntity' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castEntity'],
+        'DOMProcessingInstruction' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castProcessingInstruction'],
+        'DOMXPath' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castXPath'],
+
+        'XmlReader' => ['Symfony\Component\VarDumper\Caster\XmlReaderCaster', 'castXmlReader'],
+
+        'ErrorException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castErrorException'],
+        'Exception' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castException'],
+        'Error' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castError'],
+        'Symfony\Component\DependencyInjection\ContainerInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Symfony\Component\HttpFoundation\Request' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castRequest'],
+        'Symfony\Component\VarDumper\Exception\ThrowingCasterException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castThrowingCasterException'],
+        'Symfony\Component\VarDumper\Caster\TraceStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castTraceStub'],
+        'Symfony\Component\VarDumper\Caster\FrameStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castFrameStub'],
+        'Symfony\Component\Debug\Exception\SilencedErrorContext' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castSilencedErrorContext'],
+
+        'PHPUnit_Framework_MockObject_MockObject' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Prophecy\Prophecy\ProphecySubjectInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Mockery\MockInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+
+        'PDO' => ['Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdo'],
+        'PDOStatement' => ['Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdoStatement'],
+
+        'AMQPConnection' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castConnection'],
+        'AMQPChannel' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castChannel'],
+        'AMQPQueue' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castQueue'],
+        'AMQPExchange' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castExchange'],
+        'AMQPEnvelope' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castEnvelope'],
+
+        'ArrayObject' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayObject'],
+        'ArrayIterator' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayIterator'],
+        'SplDoublyLinkedList' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castDoublyLinkedList'],
+        'SplFileInfo' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFileInfo'],
+        'SplFileObject' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFileObject'],
+        'SplFixedArray' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFixedArray'],
+        'SplHeap' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'],
+        'SplObjectStorage' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castObjectStorage'],
+        'SplPriorityQueue' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'],
+        'OuterIterator' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castOuterIterator'],
+
+        'MongoCursorInterface' => ['Symfony\Component\VarDumper\Caster\MongoCaster', 'castCursor'],
+
+        'Redis' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedis'],
+        'RedisArray' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisArray'],
+
+        'DateTimeInterface' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castDateTime'],
+        'DateInterval' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castInterval'],
+        'DateTimeZone' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castTimeZone'],
+        'DatePeriod' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castPeriod'],
+
+        ':curl' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castCurl'],
+        ':dba' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'],
+        ':dba persistent' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'],
+        ':gd' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castGd'],
+        ':mysql link' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castMysqlLink'],
+        ':pgsql large object' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLargeObject'],
+        ':pgsql link' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'],
+        ':pgsql link persistent' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'],
+        ':pgsql result' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castResult'],
+        ':process' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castProcess'],
+        ':stream' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'],
+        ':persistent stream' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'],
+        ':stream-context' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStreamContext'],
+        ':xml' => ['Symfony\Component\VarDumper\Caster\XmlResourceCaster', 'castXml'],
+    ];
 
     protected $maxItems = 2500;
     protected $maxString = -1;
     protected $minDepth = 1;
     protected $useExt;
 
-    private $casters = array();
+    private $casters = [];
     private $prevErrorHandler;
-    private $classInfo = array();
+    private $classInfo = [];
     private $filter = 0;
 
     /**
@@ -213,7 +213,7 @@ public function setMinDepth($minDepth)
      */
     public function cloneVar($var, $filter = 0)
     {
-        $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) {
+        $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) {
             if (E_RECOVERABLE_ERROR === $type || E_USER_ERROR === $type) {
                 // Cloner never dies
                 throw new \ErrorException($msg, 0, $type, $file, $line);
@@ -270,7 +270,7 @@ protected function castObject(Stub $stub, $isNested)
             list($i, $parents, $hasDebugInfo) = $this->classInfo[$class];
         } else {
             $i = 2;
-            $parents = array(strtolower($class));
+            $parents = [strtolower($class)];
             $hasDebugInfo = method_exists($class, '__debugInfo');
 
             foreach (class_parents($class) as $p) {
@@ -283,7 +283,7 @@ protected function castObject(Stub $stub, $isNested)
             }
             $parents[] = '*';
 
-            $this->classInfo[$class] = array($i, $parents, $hasDebugInfo);
+            $this->classInfo[$class] = [$i, $parents, $hasDebugInfo];
         }
 
         $a = Caster::castObject($obj, $class, $hasDebugInfo);
@@ -297,7 +297,7 @@ protected function castObject(Stub $stub, $isNested)
                 }
             }
         } catch (\Exception $e) {
-            $a = array((Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)) + $a;
+            $a = [(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)] + $a;
         }
 
         return $a;
@@ -313,7 +313,7 @@ protected function castObject(Stub $stub, $isNested)
      */
     protected function castResource(Stub $stub, $isNested)
     {
-        $a = array();
+        $a = [];
         $res = $stub->value;
         $type = $stub->class;
 
@@ -324,7 +324,7 @@ protected function castResource(Stub $stub, $isNested)
                 }
             }
         } catch (\Exception $e) {
-            $a = array((Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)) + $a;
+            $a = [(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)] + $a;
         }
 
         return $a;
diff --git a/src/Symfony/Component/VarDumper/Cloner/Cursor.php b/src/Symfony/Component/VarDumper/Cloner/Cursor.php
index 888f4f2be33b..5b0542f6c20c 100644
--- a/src/Symfony/Component/VarDumper/Cloner/Cursor.php
+++ b/src/Symfony/Component/VarDumper/Cloner/Cursor.php
@@ -38,6 +38,6 @@ class Cursor
     public $hashLength = 0;
     public $hashCut = 0;
     public $stop = false;
-    public $attr = array();
+    public $attr = [];
     public $skipChildren = false;
 }
diff --git a/src/Symfony/Component/VarDumper/Cloner/Data.php b/src/Symfony/Component/VarDumper/Cloner/Data.php
index 8e4700d84b72..025aee359b97 100644
--- a/src/Symfony/Component/VarDumper/Cloner/Data.php
+++ b/src/Symfony/Component/VarDumper/Cloner/Data.php
@@ -79,7 +79,7 @@ public function getValue($recursive = false)
             return $item->value;
         }
 
-        $children = $item->position ? $this->data[$item->position] : array();
+        $children = $item->position ? $this->data[$item->position] : [];
 
         foreach ($children as $k => $v) {
             if ($recursive && !($v = $this->getStub($v)) instanceof Stub) {
@@ -125,7 +125,7 @@ public function __get($key)
         if (null !== $data = $this->seek($key)) {
             $item = $this->getStub($data->data[$data->position][$data->key]);
 
-            return $item instanceof Stub || array() === $item ? $data : $item;
+            return $item instanceof Stub || [] === $item ? $data : $item;
         }
     }
 
@@ -239,7 +239,7 @@ public function seek($key)
         if (!($item = $this->getStub($item)) instanceof Stub || !$item->position) {
             return;
         }
-        $keys = array($key);
+        $keys = [$key];
 
         switch ($item->type) {
             case Stub::TYPE_OBJECT:
@@ -275,7 +275,7 @@ public function seek($key)
      */
     public function dump(DumperInterface $dumper)
     {
-        $refs = array(0);
+        $refs = [0];
         $this->dumpItem($dumper, new Cursor(), $refs, $this->data[$this->position][$this->key]);
     }
 
@@ -295,7 +295,7 @@ private function dumpItem($dumper, $cursor, &$refs, $item)
         $firstSeen = true;
 
         if (!$item instanceof Stub) {
-            $cursor->attr = array();
+            $cursor->attr = [];
             $type = \gettype($item);
             if ($item && 'array' === $type) {
                 $item = $this->getStub($item);
@@ -336,10 +336,10 @@ private function dumpItem($dumper, $cursor, &$refs, $item)
                     if ($cut >= 0) {
                         $cut += \count($children);
                     }
-                    $children = array();
+                    $children = [];
                 }
             } else {
-                $children = array();
+                $children = [];
             }
             switch ($item->type) {
                 case Stub::TYPE_STRING:
diff --git a/src/Symfony/Component/VarDumper/Cloner/Stub.php b/src/Symfony/Component/VarDumper/Cloner/Stub.php
index 3b8e60d90ee6..09e2c76467f7 100644
--- a/src/Symfony/Component/VarDumper/Cloner/Stub.php
+++ b/src/Symfony/Component/VarDumper/Cloner/Stub.php
@@ -37,14 +37,14 @@ class Stub implements \Serializable
     public $handle = 0;
     public $refCount = 0;
     public $position = 0;
-    public $attr = array();
+    public $attr = [];
 
     /**
      * @internal
      */
     public function serialize()
     {
-        return \serialize(array($this->class, $this->position, $this->cut, $this->type, $this->value, $this->handle, $this->refCount, $this->attr));
+        return \serialize([$this->class, $this->position, $this->cut, $this->type, $this->value, $this->handle, $this->refCount, $this->attr]);
     }
 
     /**
diff --git a/src/Symfony/Component/VarDumper/Cloner/VarCloner.php b/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
index 5a6751572991..7916c6538457 100644
--- a/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
+++ b/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
@@ -19,7 +19,7 @@ class VarCloner extends AbstractCloner
     private static $gid;
     private static $hashMask = 0;
     private static $hashOffset = 0;
-    private static $arrayCache = array();
+    private static $arrayCache = [];
 
     /**
      * {@inheritdoc}
@@ -29,19 +29,19 @@ protected function doClone($var)
         $len = 1;                       // Length of $queue
         $pos = 0;                       // Number of cloned items past the minimum depth
         $refsCounter = 0;               // Hard references counter
-        $queue = array(array($var));    // This breadth-first queue is the return value
-        $indexedArrays = array();       // Map of queue indexes that hold numerically indexed arrays
-        $hardRefs = array();            // Map of original zval hashes to stub objects
-        $objRefs = array();             // Map of original object handles to their stub object counterpart
-        $resRefs = array();             // Map of original resource handles to their stub object counterpart
-        $values = array();              // Map of stub objects' hashes to original values
+        $queue = [[$var]];    // This breadth-first queue is the return value
+        $indexedArrays = [];       // Map of queue indexes that hold numerically indexed arrays
+        $hardRefs = [];            // Map of original zval hashes to stub objects
+        $objRefs = [];             // Map of original object handles to their stub object counterpart
+        $resRefs = [];             // Map of original resource handles to their stub object counterpart
+        $values = [];              // Map of stub objects' hashes to original values
         $maxItems = $this->maxItems;
         $maxString = $this->maxString;
         $minDepth = $this->minDepth;
         $currentDepth = 0;              // Current tree depth
         $currentDepthFinalIndex = 0;    // Final $queue index for current tree depth
         $minimumDepthReached = 0 === $minDepth; // Becomes true when minimum tree depth has been reached
-        $cookie = (object) array();     // Unique object used to detect hard references
+        $cookie = (object) [];     // Unique object used to detect hard references
         $a = null;                      // Array cast for nested structures
         $stub = null;                   // Stub capturing the main properties of an original item value
                                         // or null if the original value is used directly
@@ -74,7 +74,7 @@ protected function doClone($var)
                     if (\is_int($k)) {
                         continue;
                     }
-                    foreach (array($k => true) as $gk => $gv) {
+                    foreach ([$k => true] as $gk => $gv) {
                     }
                     if ($gk !== $k) {
                         $fromObjCast = true;
@@ -163,7 +163,7 @@ protected function doClone($var)
                             // Happens with copies of $GLOBALS
                             if (isset($v[$gid])) {
                                 unset($v[$gid]);
-                                $a = array();
+                                $a = [];
                                 foreach ($v as $gk => &$gv) {
                                     $a[$gk] = &$gv;
                                 }
@@ -254,12 +254,12 @@ protected function doClone($var)
 
                 if ($arrayStub === $stub) {
                     if ($arrayStub->cut) {
-                        $stub = array($arrayStub->cut, $arrayStub->class => $arrayStub->position);
+                        $stub = [$arrayStub->cut, $arrayStub->class => $arrayStub->position];
                         $arrayStub->cut = 0;
                     } elseif (isset(self::$arrayCache[$arrayStub->class][$arrayStub->position])) {
                         $stub = self::$arrayCache[$arrayStub->class][$arrayStub->position];
                     } else {
-                        self::$arrayCache[$arrayStub->class][$arrayStub->position] = $stub = array($arrayStub->class => $arrayStub->position);
+                        self::$arrayCache[$arrayStub->class][$arrayStub->position] = $stub = [$arrayStub->class => $arrayStub->position];
                     }
                 }
 
@@ -273,10 +273,10 @@ protected function doClone($var)
             if ($fromObjCast) {
                 $fromObjCast = false;
                 $refs = $vals;
-                $vals = array();
+                $vals = [];
                 $j = -1;
                 foreach ($queue[$i] as $k => $v) {
-                    foreach (array($k => true) as $gk => $gv) {
+                    foreach ([$k => true] as $gk => $gv) {
                     }
                     if ($gk !== $k) {
                         $vals = (object) $vals;
@@ -300,7 +300,7 @@ protected function doClone($var)
 
     private static function initHashMask()
     {
-        $obj = (object) array();
+        $obj = (object) [];
         self::$hashOffset = 16 - PHP_INT_SIZE;
         self::$hashMask = -1;
 
@@ -308,7 +308,7 @@ private static function initHashMask()
             self::$hashOffset += 16;
         } else {
             // check if we are nested in an output buffering handler to prevent a fatal error with ob_start() below
-            $obFuncs = array('ob_clean', 'ob_end_clean', 'ob_flush', 'ob_end_flush', 'ob_get_contents', 'ob_get_flush');
+            $obFuncs = ['ob_clean', 'ob_end_clean', 'ob_flush', 'ob_end_flush', 'ob_get_contents', 'ob_get_flush'];
             foreach (debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS) as $frame) {
                 if (isset($frame['function'][0]) && !isset($frame['class']) && 'o' === $frame['function'][0] && \in_array($frame['function'], $obFuncs)) {
                     $frame['line'] = 0;
diff --git a/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php b/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
index 228f8f2e5433..72c8258a62ae 100644
--- a/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
+++ b/src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php
@@ -73,7 +73,7 @@ public function setOutput($output)
                 $output = fopen($output, 'wb');
             }
             $this->outputStream = $output;
-            $this->lineDumper = array($this, 'echoLine');
+            $this->lineDumper = [$this, 'echoLine'];
         }
 
         return $prev;
diff --git a/src/Symfony/Component/VarDumper/Dumper/CliDumper.php b/src/Symfony/Component/VarDumper/Dumper/CliDumper.php
index 419cfeb4962b..2bd347d96a53 100644
--- a/src/Symfony/Component/VarDumper/Dumper/CliDumper.php
+++ b/src/Symfony/Component/VarDumper/Dumper/CliDumper.php
@@ -26,7 +26,7 @@ class CliDumper extends AbstractDumper
 
     protected $colors;
     protected $maxStringWidth = 0;
-    protected $styles = array(
+    protected $styles = [
         // See http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
         'default' => '38;5;208',
         'num' => '1;38;5;38',
@@ -40,17 +40,17 @@ class CliDumper extends AbstractDumper
         'meta' => '38;5;170',
         'key' => '38;5;113',
         'index' => '38;5;38',
-    );
+    ];
 
     protected static $controlCharsRx = '/[\x00-\x1F\x7F]+/';
-    protected static $controlCharsMap = array(
+    protected static $controlCharsMap = [
         "\t" => '\t',
         "\n" => '\n',
         "\v" => '\v',
         "\f" => '\f',
         "\r" => '\r',
         "\033" => '\e',
-    );
+    ];
 
     protected $collapseNextHash = false;
     protected $expandNextHash = false;
@@ -64,7 +64,7 @@ public function __construct($output = null, $charset = null, $flags = 0)
 
         if ('\\' === \DIRECTORY_SEPARATOR && !$this->isWindowsTrueColor()) {
             // Use only the base 16 xterm colors when using ANSICON or standard Windows 10 CLI
-            $this->setStyles(array(
+            $this->setStyles([
                 'default' => '31',
                 'num' => '1;34',
                 'const' => '1;31',
@@ -74,7 +74,7 @@ public function __construct($output = null, $charset = null, $flags = 0)
                 'meta' => '35',
                 'key' => '32',
                 'index' => '34',
-            ));
+            ]);
         }
     }
 
@@ -152,7 +152,7 @@ public function dumpScalar(Cursor $cursor, $type, $value)
                 break;
 
             default:
-                $attr += array('value' => $this->utf8Encode($value));
+                $attr += ['value' => $this->utf8Encode($value)];
                 $value = $this->utf8Encode($type);
                 break;
         }
@@ -177,10 +177,10 @@ public function dumpString(Cursor $cursor, $str, $bin, $cut)
             $this->line .= '""';
             $this->endValue($cursor);
         } else {
-            $attr += array(
+            $attr += [
                 'length' => 0 <= $cut ? mb_strlen($str, 'UTF-8') + $cut : 0,
                 'binary' => $bin,
-            );
+            ];
             $str = explode("\n", $str);
             if (isset($str[1]) && !isset($str[2]) && !isset($str[1][0])) {
                 unset($str[1]);
@@ -272,9 +272,9 @@ public function enterHash(Cursor $cursor, $type, $class, $hasChild)
         }
 
         if ($cursor->softRefCount || 0 < $cursor->softRefHandle) {
-            $prefix .= $this->style('ref', (Cursor::HASH_RESOURCE === $type ? '@' : '#').(0 < $cursor->softRefHandle ? $cursor->softRefHandle : $cursor->softRefTo), array('count' => $cursor->softRefCount));
+            $prefix .= $this->style('ref', (Cursor::HASH_RESOURCE === $type ? '@' : '#').(0 < $cursor->softRefHandle ? $cursor->softRefHandle : $cursor->softRefTo), ['count' => $cursor->softRefCount]);
         } elseif ($cursor->hardRefTo && !$cursor->refIndex && $class) {
-            $prefix .= $this->style('ref', '&'.$cursor->hardRefTo, array('count' => $cursor->hardRefCount));
+            $prefix .= $this->style('ref', '&'.$cursor->hardRefTo, ['count' => $cursor->hardRefCount]);
         } elseif (!$hasChild && Cursor::HASH_RESOURCE === $type) {
             $prefix = substr($prefix, 0, -1);
         }
@@ -327,7 +327,7 @@ protected function dumpKey(Cursor $cursor)
             if ($cursor->hashKeyIsBinary) {
                 $key = $this->utf8Encode($key);
             }
-            $attr = array('binary' => $cursor->hashKeyIsBinary);
+            $attr = ['binary' => $cursor->hashKeyIsBinary];
             $bin = $cursor->hashKeyIsBinary ? 'b' : '';
             $style = 'key';
             switch ($cursor->hashType) {
@@ -364,7 +364,7 @@ protected function dumpKey(Cursor $cursor)
                                 $style = 'meta';
                                 if (isset($key[0][1])) {
                                     parse_str(substr($key[0], 1), $attr);
-                                    $attr += array('binary' => $cursor->hashKeyIsBinary);
+                                    $attr += ['binary' => $cursor->hashKeyIsBinary];
                                 }
                                 break;
                             case '*':
@@ -389,13 +389,13 @@ protected function dumpKey(Cursor $cursor)
                         $this->line .= $bin.$this->style($style, $key[1], $attr).(isset($attr['separator']) ? $attr['separator'] : ': ');
                     } else {
                         // This case should not happen
-                        $this->line .= '-'.$bin.'"'.$this->style('private', $key, array('class' => '')).'": ';
+                        $this->line .= '-'.$bin.'"'.$this->style('private', $key, ['class' => '']).'": ';
                     }
                     break;
             }
 
             if ($cursor->hardRefTo) {
-                $this->line .= $this->style('ref', '&'.($cursor->hardRefCount ? $cursor->hardRefTo : ''), array('count' => $cursor->hardRefCount)).' ';
+                $this->line .= $this->style('ref', '&'.($cursor->hardRefCount ? $cursor->hardRefTo : ''), ['count' => $cursor->hardRefCount]).' ';
             }
         }
     }
@@ -409,7 +409,7 @@ protected function dumpKey(Cursor $cursor)
      *
      * @return string The value with style decoration
      */
-    protected function style($style, $value, $attr = array())
+    protected function style($style, $value, $attr = [])
     {
         if (null === $this->colors) {
             $this->colors = $this->supportsColors();
@@ -495,7 +495,7 @@ protected function supportsColors()
             }
         }
 
-        $h = stream_get_meta_data($this->outputStream) + array('wrapper_type' => null);
+        $h = stream_get_meta_data($this->outputStream) + ['wrapper_type' => null];
         $h = 'Output' === $h['stream_type'] && 'PHP' === $h['wrapper_type'] ? fopen('php://stdout', 'wb') : $this->outputStream;
 
         return static::$defaultColors = $this->hasColorSupport($h);
diff --git a/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php b/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
index d498e12f838f..2e617c7c916b 100644
--- a/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
+++ b/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
@@ -30,7 +30,7 @@ class HtmlDumper extends CliDumper
     protected $colors = true;
     protected $headerIsDumped = false;
     protected $lastDepth = -1;
-    protected $styles = array(
+    protected $styles = [
         'default' => 'background-color:#18171B; color:#FF8400; line-height:1.2em; font:12px Menlo, Monaco, Consolas, monospace; word-wrap: break-word; white-space: pre-wrap; position:relative; z-index:99999; word-break: break-all',
         'num' => 'font-weight:bold; color:#1299DA',
         'const' => 'font-weight:bold',
@@ -44,14 +44,14 @@ class HtmlDumper extends CliDumper
         'key' => 'color:#56DB3A',
         'index' => 'color:#1299DA',
         'ellipsis' => 'color:#FF8400',
-    );
+    ];
 
-    private $displayOptions = array(
+    private $displayOptions = [
         'maxDepth' => 1,
         'maxStringLength' => 160,
         'fileLinkFormat' => null,
-    );
-    private $extraDisplayOptions = array();
+    ];
+    private $extraDisplayOptions = [];
 
     /**
      * {@inheritdoc}
@@ -108,7 +108,7 @@ public function setDumpBoundaries($prefix, $suffix)
     /**
      * {@inheritdoc}
      */
-    public function dump(Data $data, $output = null, array $extraDisplayOptions = array())
+    public function dump(Data $data, $output = null, array $extraDisplayOptions = [])
     {
         $this->extraDisplayOptions = $extraDisplayOptions;
         $result = parent::dump($data, $output);
@@ -785,7 +785,7 @@ public function leaveHash(Cursor $cursor, $type, $class, $hasChild, $cut)
     /**
      * {@inheritdoc}
      */
-    protected function style($style, $value, $attr = array())
+    protected function style($style, $value, $attr = [])
     {
         if ('' === $value) {
             return '';
@@ -873,7 +873,7 @@ protected function dumpLine($depth, $endOfValue = false)
         }
 
         if (-1 === $depth) {
-            $args = array('"'.$this->dumpId.'"');
+            $args = ['"'.$this->dumpId.'"'];
             if ($this->extraDisplayOptions) {
                 $args[] = json_encode($this->extraDisplayOptions, JSON_FORCE_OBJECT);
             }
@@ -895,7 +895,7 @@ private function getSourceLink($file, $line)
         $options = $this->extraDisplayOptions + $this->displayOptions;
 
         if ($fmt = $options['fileLinkFormat']) {
-            return \is_string($fmt) ? strtr($fmt, array('%f' => $file, '%l' => $line)) : $fmt->format($file, $line);
+            return \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line);
         }
 
         return false;
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/CasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/CasterTest.php
index 105d5638ee1b..728697b413c4 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/CasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/CasterTest.php
@@ -22,7 +22,7 @@ class CasterTest extends TestCase
 {
     use VarDumperTestTrait;
 
-    private $referenceArray = array(
+    private $referenceArray = [
         'null' => null,
         'empty' => false,
         'public' => 'pub',
@@ -30,7 +30,7 @@ class CasterTest extends TestCase
         "\0+\0dynamic" => 'dyn',
         "\0*\0protected" => 'prot',
         "\0Foo\0private" => 'priv',
-    );
+    ];
 
     /**
      * @dataProvider provideFilter
@@ -48,107 +48,107 @@ public function testFilter($filter, $expectedDiff, $listedProperties = null)
 
     public function provideFilter()
     {
-        return array(
-            array(
+        return [
+            [
                 0,
-                array(),
-            ),
-            array(
+                [],
+            ],
+            [
                 Caster::EXCLUDE_PUBLIC,
-                array(
+                [
                     'null' => null,
                     'empty' => false,
                     'public' => 'pub',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 Caster::EXCLUDE_NULL,
-                array(
+                [
                     'null' => null,
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 Caster::EXCLUDE_EMPTY,
-                array(
+                [
                     'null' => null,
                     'empty' => false,
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 Caster::EXCLUDE_VIRTUAL,
-                array(
+                [
                     "\0~\0virtual" => 'virt',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 Caster::EXCLUDE_DYNAMIC,
-                array(
+                [
                     "\0+\0dynamic" => 'dyn',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 Caster::EXCLUDE_PROTECTED,
-                array(
+                [
                     "\0*\0protected" => 'prot',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 Caster::EXCLUDE_PRIVATE,
-                array(
+                [
                     "\0Foo\0private" => 'priv',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 Caster::EXCLUDE_VERBOSE,
-                array(
+                [
                     'public' => 'pub',
                     "\0*\0protected" => 'prot',
-                ),
-                array('public', "\0*\0protected"),
-            ),
-            array(
+                ],
+                ['public', "\0*\0protected"],
+            ],
+            [
                 Caster::EXCLUDE_NOT_IMPORTANT,
-                array(
+                [
                     'null' => null,
                     'empty' => false,
                     "\0~\0virtual" => 'virt',
                     "\0+\0dynamic" => 'dyn',
                     "\0Foo\0private" => 'priv',
-                ),
-                array('public', "\0*\0protected"),
-            ),
-            array(
+                ],
+                ['public', "\0*\0protected"],
+            ],
+            [
                 Caster::EXCLUDE_VIRTUAL | Caster::EXCLUDE_DYNAMIC,
-                array(
+                [
                     "\0~\0virtual" => 'virt',
                     "\0+\0dynamic" => 'dyn',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 Caster::EXCLUDE_NOT_IMPORTANT | Caster::EXCLUDE_VERBOSE,
                 $this->referenceArray,
-                array('public', "\0*\0protected"),
-            ),
-            array(
+                ['public', "\0*\0protected"],
+            ],
+            [
                 Caster::EXCLUDE_NOT_IMPORTANT | Caster::EXCLUDE_EMPTY,
-                array(
+                [
                     'null' => null,
                     'empty' => false,
                     "\0~\0virtual" => 'virt',
                     "\0+\0dynamic" => 'dyn',
                     "\0*\0protected" => 'prot',
                     "\0Foo\0private" => 'priv',
-                ),
-                array('public', 'empty'),
-            ),
-            array(
+                ],
+                ['public', 'empty'],
+            ],
+            [
                 Caster::EXCLUDE_VERBOSE | Caster::EXCLUDE_EMPTY | Caster::EXCLUDE_STRICT,
-                array(
+                [
                     'empty' => false,
-                ),
-                array('public', 'empty'),
-            ),
-        );
+                ],
+                ['public', 'empty'],
+            ],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/DateCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/DateCasterTest.php
index dafa16cddd1b..da8b4d0fa5c3 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/DateCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/DateCasterTest.php
@@ -55,7 +55,7 @@ public function testCastDateTime($time, $timezone, $xDate, $xTimestamp, $xInfos)
 
         $stub = new Stub();
         $date = new \DateTime($time, new \DateTimeZone($timezone));
-        $cast = DateCaster::castDateTime($date, array('foo' => 'bar'), $stub, false, 0);
+        $cast = DateCaster::castDateTime($date, ['foo' => 'bar'], $stub, false, 0);
 
         $xDump = <<<EODUMP
 array:1 [
@@ -83,18 +83,18 @@ public function testCastDateTime($time, $timezone, $xDate, $xTimestamp, $xInfos)
 
     public function provideDateTimes()
     {
-        return array(
-            array('2017-04-30 00:00:00.000000', 'Europe/Zurich', '2017-04-30 00:00:00.0 Europe/Zurich (+02:00)', 1493503200, 'Sunday, April 30, 2017%Afrom now%ADST On'),
-            array('2017-12-31 00:00:00.000000', 'Europe/Zurich', '2017-12-31 00:00:00.0 Europe/Zurich (+01:00)', 1514674800, 'Sunday, December 31, 2017%Afrom now%ADST Off'),
-            array('2017-04-30 00:00:00.000000', '+02:00', '2017-04-30 00:00:00.0 +02:00', 1493503200, 'Sunday, April 30, 2017%Afrom now'),
-
-            array('2017-04-30 00:00:00.100000', '+00:00', '2017-04-30 00:00:00.100 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.120000', '+00:00', '2017-04-30 00:00:00.120 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.123000', '+00:00', '2017-04-30 00:00:00.123 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.123400', '+00:00', '2017-04-30 00:00:00.123400 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.123450', '+00:00', '2017-04-30 00:00:00.123450 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.123456', '+00:00', '2017-04-30 00:00:00.123456 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-        );
+        return [
+            ['2017-04-30 00:00:00.000000', 'Europe/Zurich', '2017-04-30 00:00:00.0 Europe/Zurich (+02:00)', 1493503200, 'Sunday, April 30, 2017%Afrom now%ADST On'],
+            ['2017-12-31 00:00:00.000000', 'Europe/Zurich', '2017-12-31 00:00:00.0 Europe/Zurich (+01:00)', 1514674800, 'Sunday, December 31, 2017%Afrom now%ADST Off'],
+            ['2017-04-30 00:00:00.000000', '+02:00', '2017-04-30 00:00:00.0 +02:00', 1493503200, 'Sunday, April 30, 2017%Afrom now'],
+
+            ['2017-04-30 00:00:00.100000', '+00:00', '2017-04-30 00:00:00.100 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.120000', '+00:00', '2017-04-30 00:00:00.120 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.123000', '+00:00', '2017-04-30 00:00:00.123 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.123400', '+00:00', '2017-04-30 00:00:00.123400 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.123450', '+00:00', '2017-04-30 00:00:00.123450 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.123456', '+00:00', '2017-04-30 00:00:00.123456 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+        ];
     }
 
     /**
@@ -149,7 +149,7 @@ public function testCastInterval($intervalSpec, $ms, $invert, $xInterval, $xSeco
         $interval = $this->createInterval($intervalSpec, $ms, $invert);
         $stub = new Stub();
 
-        $cast = DateCaster::castInterval($interval, array('foo' => 'bar'), $stub, false, Caster::EXCLUDE_VERBOSE);
+        $cast = DateCaster::castInterval($interval, ['foo' => 'bar'], $stub, false, Caster::EXCLUDE_VERBOSE);
 
         $xDump = <<<EODUMP
 array:1 [
@@ -184,35 +184,35 @@ public function provideIntervals()
         $i = new \DateInterval('PT0S');
         $ms = ($withMs = \PHP_VERSION_ID >= 70100 && isset($i->f)) ? '.0' : '';
 
-        return array(
-            array('PT0S', 0, 0, '0s', '0s'),
-            array('PT0S', 0.1, 0, $withMs ? '+ 00:00:00.100' : '0s', '%is'),
-            array('PT1S', 0, 0, '+ 00:00:01'.$ms, '%is'),
-            array('PT2M', 0, 0, '+ 00:02:00'.$ms, '%is'),
-            array('PT3H', 0, 0, '+ 03:00:00'.$ms, '%ss'),
-            array('P4D', 0, 0, '+ 4d', '%ss'),
-            array('P5M', 0, 0, '+ 5m', null),
-            array('P6Y', 0, 0, '+ 6y', null),
-            array('P1Y2M3DT4H5M6S', 0, 0, '+ 1y 2m 3d 04:05:06'.$ms, null),
-            array('PT1M60S', 0, 0, '+ 00:02:00'.$ms, null),
-            array('PT1H60M', 0, 0, '+ 02:00:00'.$ms, null),
-            array('P1DT24H', 0, 0, '+ 2d', null),
-            array('P1M32D', 0, 0, '+ 1m 32d', null),
-
-            array('PT0S', 0, 1, '0s', '0s'),
-            array('PT0S', 0.1, 1, $withMs ? '- 00:00:00.100' : '0s', '%is'),
-            array('PT1S', 0, 1, '- 00:00:01'.$ms, '%is'),
-            array('PT2M', 0, 1, '- 00:02:00'.$ms, '%is'),
-            array('PT3H', 0, 1, '- 03:00:00'.$ms, '%ss'),
-            array('P4D', 0, 1, '- 4d', '%ss'),
-            array('P5M', 0, 1, '- 5m', null),
-            array('P6Y', 0, 1, '- 6y', null),
-            array('P1Y2M3DT4H5M6S', 0, 1, '- 1y 2m 3d 04:05:06'.$ms, null),
-            array('PT1M60S', 0, 1, '- 00:02:00'.$ms, null),
-            array('PT1H60M', 0, 1, '- 02:00:00'.$ms, null),
-            array('P1DT24H', 0, 1, '- 2d', null),
-            array('P1M32D', 0, 1, '- 1m 32d', null),
-        );
+        return [
+            ['PT0S', 0, 0, '0s', '0s'],
+            ['PT0S', 0.1, 0, $withMs ? '+ 00:00:00.100' : '0s', '%is'],
+            ['PT1S', 0, 0, '+ 00:00:01'.$ms, '%is'],
+            ['PT2M', 0, 0, '+ 00:02:00'.$ms, '%is'],
+            ['PT3H', 0, 0, '+ 03:00:00'.$ms, '%ss'],
+            ['P4D', 0, 0, '+ 4d', '%ss'],
+            ['P5M', 0, 0, '+ 5m', null],
+            ['P6Y', 0, 0, '+ 6y', null],
+            ['P1Y2M3DT4H5M6S', 0, 0, '+ 1y 2m 3d 04:05:06'.$ms, null],
+            ['PT1M60S', 0, 0, '+ 00:02:00'.$ms, null],
+            ['PT1H60M', 0, 0, '+ 02:00:00'.$ms, null],
+            ['P1DT24H', 0, 0, '+ 2d', null],
+            ['P1M32D', 0, 0, '+ 1m 32d', null],
+
+            ['PT0S', 0, 1, '0s', '0s'],
+            ['PT0S', 0.1, 1, $withMs ? '- 00:00:00.100' : '0s', '%is'],
+            ['PT1S', 0, 1, '- 00:00:01'.$ms, '%is'],
+            ['PT2M', 0, 1, '- 00:02:00'.$ms, '%is'],
+            ['PT3H', 0, 1, '- 03:00:00'.$ms, '%ss'],
+            ['P4D', 0, 1, '- 4d', '%ss'],
+            ['P5M', 0, 1, '- 5m', null],
+            ['P6Y', 0, 1, '- 6y', null],
+            ['P1Y2M3DT4H5M6S', 0, 1, '- 1y 2m 3d 04:05:06'.$ms, null],
+            ['PT1M60S', 0, 1, '- 00:02:00'.$ms, null],
+            ['PT1H60M', 0, 1, '- 02:00:00'.$ms, null],
+            ['P1DT24H', 0, 1, '- 2d', null],
+            ['P1M32D', 0, 1, '- 1m 32d', null],
+        ];
     }
 
     /**
@@ -267,7 +267,7 @@ public function testCastTimeZone($timezone, $xTimezone, $xRegion)
         $timezone = new \DateTimeZone($timezone);
         $stub = new Stub();
 
-        $cast = DateCaster::castTimeZone($timezone, array('foo' => 'bar'), $stub, false, Caster::EXCLUDE_VERBOSE);
+        $cast = DateCaster::castTimeZone($timezone, ['foo' => 'bar'], $stub, false, Caster::EXCLUDE_VERBOSE);
 
         $xDump = <<<EODUMP
 array:1 [
@@ -297,27 +297,27 @@ public function provideTimeZones()
     {
         $xRegion = \extension_loaded('intl') ? '%s' : '';
 
-        return array(
+        return [
             // type 1 (UTC offset)
-            array('-12:00', '-12:00', ''),
-            array('+00:00', '+00:00', ''),
-            array('+14:00', '+14:00', ''),
+            ['-12:00', '-12:00', ''],
+            ['+00:00', '+00:00', ''],
+            ['+14:00', '+14:00', ''],
 
             // type 2 (timezone abbreviation)
-            array('GMT', '+00:00', ''),
-            array('a', '+01:00', ''),
-            array('b', '+02:00', ''),
-            array('z', '+00:00', ''),
+            ['GMT', '+00:00', ''],
+            ['a', '+01:00', ''],
+            ['b', '+02:00', ''],
+            ['z', '+00:00', ''],
 
             // type 3 (timezone identifier)
-            array('Africa/Tunis', 'Africa/Tunis (%s:00)', $xRegion),
-            array('America/Panama', 'America/Panama (%s:00)', $xRegion),
-            array('Asia/Jerusalem', 'Asia/Jerusalem (%s:00)', $xRegion),
-            array('Atlantic/Canary', 'Atlantic/Canary (%s:00)', $xRegion),
-            array('Australia/Perth', 'Australia/Perth (%s:00)', $xRegion),
-            array('Europe/Zurich', 'Europe/Zurich (%s:00)', $xRegion),
-            array('Pacific/Tahiti', 'Pacific/Tahiti (%s:00)', $xRegion),
-        );
+            ['Africa/Tunis', 'Africa/Tunis (%s:00)', $xRegion],
+            ['America/Panama', 'America/Panama (%s:00)', $xRegion],
+            ['Asia/Jerusalem', 'Asia/Jerusalem (%s:00)', $xRegion],
+            ['Atlantic/Canary', 'Atlantic/Canary (%s:00)', $xRegion],
+            ['Australia/Perth', 'Australia/Perth (%s:00)', $xRegion],
+            ['Europe/Zurich', 'Europe/Zurich (%s:00)', $xRegion],
+            ['Pacific/Tahiti', 'Pacific/Tahiti (%s:00)', $xRegion],
+        ];
     }
 
     /**
@@ -352,7 +352,7 @@ public function testCastPeriod($start, $interval, $end, $options, $xPeriod, $xDa
         $p = new \DatePeriod(new \DateTime($start), new \DateInterval($interval), \is_int($end) ? $end : new \DateTime($end), $options);
         $stub = new Stub();
 
-        $cast = DateCaster::castPeriod($p, array(), $stub, false, 0);
+        $cast = DateCaster::castPeriod($p, [], $stub, false, 0);
 
         $xDump = <<<EODUMP
 array:1 [
@@ -383,28 +383,28 @@ public function providePeriods()
         $i = new \DateInterval('PT0S');
         $ms = \PHP_VERSION_ID >= 70100 && isset($i->f) ? '.0' : '';
 
-        $periods = array(
-            array('2017-01-01', 'P1D', '2017-01-03', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-03 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02'),
-            array('2017-01-01', 'P1D', 1, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01%a2) 2017-01-02'),
+        $periods = [
+            ['2017-01-01', 'P1D', '2017-01-03', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-03 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02'],
+            ['2017-01-01', 'P1D', 1, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01%a2) 2017-01-02'],
 
-            array('2017-01-01', 'P1D', '2017-01-04', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-04 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03'),
-            array('2017-01-01', 'P1D', 2, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 3 time/s', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03'),
+            ['2017-01-01', 'P1D', '2017-01-04', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-04 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03'],
+            ['2017-01-01', 'P1D', 2, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 3 time/s', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03'],
 
-            array('2017-01-01', 'P1D', '2017-01-05', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-05 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02%a1 more'),
-            array('2017-01-01', 'P1D', 3, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 4 time/s', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03%a1 more'),
+            ['2017-01-01', 'P1D', '2017-01-05', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-05 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02%a1 more'],
+            ['2017-01-01', 'P1D', 3, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 4 time/s', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03%a1 more'],
 
-            array('2017-01-01', 'P1D', '2017-01-21', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-21 00:00:00.0', '1) 2017-01-01%a17 more'),
-            array('2017-01-01', 'P1D', 19, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 20 time/s', '1) 2017-01-01%a17 more'),
+            ['2017-01-01', 'P1D', '2017-01-21', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-21 00:00:00.0', '1) 2017-01-01%a17 more'],
+            ['2017-01-01', 'P1D', 19, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 20 time/s', '1) 2017-01-01%a17 more'],
 
-            array('2017-01-01 01:00:00', 'P1D', '2017-01-03 01:00:00', 0, 'every + 1d, from 2017-01-01 01:00:00.0 (included) to 2017-01-03 01:00:00.0', '1) 2017-01-01 01:00:00.0%a2) 2017-01-02 01:00:00.0'),
-            array('2017-01-01 01:00:00', 'P1D', 1, 0, 'every + 1d, from 2017-01-01 01:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01 01:00:00.0%a2) 2017-01-02 01:00:00.0'),
+            ['2017-01-01 01:00:00', 'P1D', '2017-01-03 01:00:00', 0, 'every + 1d, from 2017-01-01 01:00:00.0 (included) to 2017-01-03 01:00:00.0', '1) 2017-01-01 01:00:00.0%a2) 2017-01-02 01:00:00.0'],
+            ['2017-01-01 01:00:00', 'P1D', 1, 0, 'every + 1d, from 2017-01-01 01:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01 01:00:00.0%a2) 2017-01-02 01:00:00.0'],
 
-            array('2017-01-01', 'P1DT1H', '2017-01-03', 0, "every + 1d 01:00:00$ms, from 2017-01-01 00:00:00.0 (included) to 2017-01-03 00:00:00.0", '1) 2017-01-01 00:00:00.0%a2) 2017-01-02 01:00:00.0'),
-            array('2017-01-01', 'P1DT1H', 1, 0, "every + 1d 01:00:00$ms, from 2017-01-01 00:00:00.0 (included) recurring 2 time/s", '1) 2017-01-01 00:00:00.0%a2) 2017-01-02 01:00:00.0'),
+            ['2017-01-01', 'P1DT1H', '2017-01-03', 0, "every + 1d 01:00:00$ms, from 2017-01-01 00:00:00.0 (included) to 2017-01-03 00:00:00.0", '1) 2017-01-01 00:00:00.0%a2) 2017-01-02 01:00:00.0'],
+            ['2017-01-01', 'P1DT1H', 1, 0, "every + 1d 01:00:00$ms, from 2017-01-01 00:00:00.0 (included) recurring 2 time/s", '1) 2017-01-01 00:00:00.0%a2) 2017-01-02 01:00:00.0'],
 
-            array('2017-01-01', 'P1D', '2017-01-04', \DatePeriod::EXCLUDE_START_DATE, 'every + 1d, from 2017-01-01 00:00:00.0 (excluded) to 2017-01-04 00:00:00.0', '1) 2017-01-02%a2) 2017-01-03'),
-            array('2017-01-01', 'P1D', 2, \DatePeriod::EXCLUDE_START_DATE, 'every + 1d, from 2017-01-01 00:00:00.0 (excluded) recurring 2 time/s', '1) 2017-01-02%a2) 2017-01-03'),
-        );
+            ['2017-01-01', 'P1D', '2017-01-04', \DatePeriod::EXCLUDE_START_DATE, 'every + 1d, from 2017-01-01 00:00:00.0 (excluded) to 2017-01-04 00:00:00.0', '1) 2017-01-02%a2) 2017-01-03'],
+            ['2017-01-01', 'P1D', 2, \DatePeriod::EXCLUDE_START_DATE, 'every + 1d, from 2017-01-01 00:00:00.0 (excluded) recurring 2 time/s', '1) 2017-01-02%a2) 2017-01-03'],
+        ];
 
         if (\PHP_VERSION_ID < 70107) {
             array_walk($periods, function (&$i) { $i[5] = ''; });
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/ExceptionCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/ExceptionCasterTest.php
index 4f9b538a0a0e..ea83e77163d1 100644
--- a/src/Symfony/Component/VarDumper/Te
10000
sts/Caster/ExceptionCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/ExceptionCasterTest.php
@@ -36,7 +36,7 @@ protected function tearDown()
 
     public function testDefaultSettings()
     {
-        $ref = array('foo');
+        $ref = ['foo'];
         $e = $this->getTestException('foo', $ref);
 
         $expectedDump = <<<'EODUMP'
@@ -57,7 +57,7 @@ public function testDefaultSettings()
 EODUMP;
 
         $this->assertDumpMatchesFormat($expectedDump, $e);
-        $this->assertSame(array('foo'), $ref);
+        $this->assertSame(['foo'], $ref);
     }
 
     public function testSeek()
@@ -166,19 +166,19 @@ public function testFrameWithTwig()
     {
         require_once \dirname(__DIR__).'/Fixtures/Twig.php';
 
-        $f = array(
-            new FrameStub(array(
+        $f = [
+            new FrameStub([
                 'file' => \dirname(__DIR__).'/Fixtures/Twig.php',
                 'line' => 20,
                 'class' => '__TwigTemplate_VarDumperFixture_u75a09',
-            )),
-            new FrameStub(array(
+            ]),
+            new FrameStub([
                 'file' => \dirname(__DIR__).'/Fixtures/Twig.php',
                 'line' => 21,
                 'class' => '__TwigTemplate_VarDumperFixture_u75a09',
                 'object' => new \__TwigTemplate_VarDumperFixture_u75a09(null, __FILE__),
-            )),
-        );
+            ]),
+        ];
 
         $expectedDump = <<<'EODUMP'
 array:2 [
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/PdoCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/PdoCasterTest.php
index 000e5feeb125..19bbe0f80c43 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/PdoCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/PdoCasterTest.php
@@ -29,9 +29,9 @@ class PdoCasterTest extends TestCase
     public function testCastPdo()
     {
         $pdo = new \PDO('sqlite::memory:');
-        $pdo->setAttribute(\PDO::ATTR_STATEMENT_CLASS, array('PDOStatement', array($pdo)));
+        $pdo->setAttribute(\PDO::ATTR_STATEMENT_CLASS, ['PDOStatement', [$pdo]]);
 
-        $cast = PdoCaster::castPdo($pdo, array(), new Stub(), false);
+        $cast = PdoCaster::castPdo($pdo, [], new Stub(), false);
 
         $this->assertInstanceOf('Symfony\Component\VarDumper\Caster\EnumStub', $cast["\0~\0attributes"]);
 
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php
index 4e6759155426..96cb80ebe6e5 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php
@@ -90,10 +90,10 @@ public function testFromCallableClosureCaster()
         if (\defined('HHVM_VERSION_ID')) {
             $this->markTestSkipped('Not for HHVM.');
         }
-        $var = array(
+        $var = [
             (new \ReflectionMethod($this, __FUNCTION__))->getClosure($this),
             (new \ReflectionMethod(__CLASS__, 'tearDownAfterClass'))->getClosure(),
-        );
+        ];
 
         $this->assertDumpMatchesFormat(
             <<<EOTXT
@@ -251,7 +251,7 @@ public function testGenerator()
 EODUMP;
 
         $r = new \ReflectionGenerator($generator);
-        $this->assertDumpMatchesFormat($expectedDump, array($r, $r->getExecutingGenerator()));
+        $this->assertDumpMatchesFormat($expectedDump, [$r, $r->getExecutingGenerator()]);
 
         foreach ($generator as $v) {
         }
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php
index 1aa84612684a..984b340c6d70 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php
@@ -23,8 +23,8 @@ class SplCasterTest extends TestCase
 
     public function getCastFileInfoTests()
     {
-        return array(
-            array(__FILE__, <<<'EOTXT'
+        return [
+            [__FILE__, <<<'EOTXT'
 SplFileInfo {
 %Apath: "%sCaster"
   filename: "SplCasterTest.php"
@@ -49,8 +49,8 @@ public function getCastFileInfoTests()
   link: false
 %A}
 EOTXT
-            ),
-            array('https://google.com/about', <<<'EOTXT'
+            ],
+            ['https://google.com/about', <<<'EOTXT'
 SplFileInfo {
 %Apath: "https://google.com"
   filename: "about"
@@ -60,8 +60,8 @@ public function getCastFileInfoTests()
   realPath: false
 %A}
 EOTXT
-            ),
-        );
+            ],
+        ];
     }
 
     /** @dataProvider getCastFileInfoTests */
@@ -137,12 +137,12 @@ public function testCastSplDoublyLinkedList($modeValue, $modeDump)
 
     public function provideCastSplDoublyLinkedList()
     {
-        return array(
-            array(\SplDoublyLinkedList::IT_MODE_FIFO, 'IT_MODE_FIFO | IT_MODE_KEEP'),
-            array(\SplDoublyLinkedList::IT_MODE_LIFO, 'IT_MODE_LIFO | IT_MODE_KEEP'),
-            array(\SplDoublyLinkedList::IT_MODE_FIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_FIFO | IT_MODE_DELETE'),
-            array(\SplDoublyLinkedList::IT_MODE_LIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_LIFO | IT_MODE_DELETE'),
-        );
+        return [
+            [\SplDoublyLinkedList::IT_MODE_FIFO, 'IT_MODE_FIFO | IT_MODE_KEEP'],
+            [\SplDoublyLinkedList::IT_MODE_LIFO, 'IT_MODE_LIFO | IT_MODE_KEEP'],
+            [\SplDoublyLinkedList::IT_MODE_FIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_FIFO | IT_MODE_DELETE'],
+            [\SplDoublyLinkedList::IT_MODE_LIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_LIFO | IT_MODE_DELETE'],
+        ];
     }
 
     public function testCastObjectStorageIsntModified()
@@ -169,7 +169,7 @@ public function testCastArrayObject()
         if (\defined('HHVM_VERSION')) {
             $this->markTestSkipped('HHVM as different internal details.');
         }
-        $var = new \ArrayObject(array(123));
+        $var = new \ArrayObject([123]);
         $var->foo = 234;
 
         $expected = <<<EOTXT
@@ -191,7 +191,7 @@ public function testArrayIterator()
         if (\defined('HHVM_VERSION')) {
             $this->markTestSkipped('HHVM as different internal details.');
         }
-        $var = new MyArrayIterator(array(234));
+        $var = new MyArrayIterator([234]);
 
         $expected = <<<EOTXT
 Symfony\Component\VarDumper\Tests\Caster\MyArrayIterator {
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/StubCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/StubCasterTest.php
index 36603c51cc01..945833ebca68 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/StubCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/StubCasterTest.php
@@ -26,7 +26,7 @@ class StubCasterTest extends TestCase
 
     public function testArgsStubWithDefaults($foo = 234, $bar = 456)
     {
-        $args = array(new ArgsStub(array(123), __FUNCTION__, __CLASS__));
+        $args = [new ArgsStub([123], __FUNCTION__, __CLASS__)];
 
         $expectedDump = <<<'EODUMP'
 array:1 [
@@ -41,7 +41,7 @@ public function testArgsStubWithDefaults($foo = 234, $bar = 456)
 
     public function testArgsStubWithExtraArgs($foo = 234)
     {
-        $args = array(new ArgsStub(array(123, 456), __FUNCTION__, __CLASS__));
+        $args = [new ArgsStub([123, 456], __FUNCTION__, __CLASS__)];
 
         $expectedDump = <<<'EODUMP'
 array:1 [
@@ -59,7 +59,7 @@ public function testArgsStubWithExtraArgs($foo = 234)
 
     public function testArgsStubNoParamWithExtraArgs()
     {
-        $args = array(new ArgsStub(array(123), __FUNCTION__, __CLASS__));
+        $args = [new ArgsStub([123], __FUNCTION__, __CLASS__)];
 
         $expectedDump = <<<'EODUMP'
 array:1 [
@@ -74,7 +74,7 @@ public function testArgsStubNoParamWithExtraArgs()
 
     public function testArgsStubWithClosure()
     {
-        $args = array(new ArgsStub(array(123), '{closure}', null));
+        $args = [new ArgsStub([123], '{closure}', null)];
 
         $expectedDump = <<<'EODUMP'
 array:1 [
@@ -89,13 +89,13 @@ public function testArgsStubWithClosure()
 
     public function testLinkStub()
     {
-        $var = array(new LinkStub(__CLASS__, 0, __FILE__));
+        $var = [new LinkStub(__CLASS__, 0, __FILE__)];
 
         $cloner = new VarCloner();
         $dumper = new HtmlDumper();
         $dumper->setDumpHeader('<foo></foo>');
         $dumper->setDumpBoundaries('<bar>', '</bar>');
-        $dumper->setDisplayOptions(array('fileLinkFormat' => '%f:%l'));
+        $dumper->setDisplayOptions(['fileLinkFormat' => '%f:%l']);
         $dump = $dumper->dump($cloner->cloneVar($var), true);
 
         $expectedDump = <<<'EODUMP'
@@ -110,13 +110,13 @@ public function testLinkStub()
 
     public function testLinkStubWithNoFileLink()
     {
-        $var = array(new LinkStub('example.com', 0, 'http://example.com'));
+        $var = [new LinkStub('example.com', 0, 'http://example.com')];
 
         $cloner = new VarCloner();
         $dumper = new HtmlDumper();
         $dumper->setDumpHeader('<foo></foo>');
         $dumper->setDumpBoundaries('<bar>', '</bar>');
-        $dumper->setDisplayOptions(array('fileLinkFormat' => '%f:%l'));
+        $dumper->setDisplayOptions(['fileLinkFormat' => '%f:%l']);
         $dump = $dumper->dump($cloner->cloneVar($var), true);
 
         $expectedDump = <<<'EODUMP'
@@ -131,13 +131,13 @@ public function testLinkStubWithNoFileLink()
 
     public function testClassStub()
     {
-        $var = array(new ClassStub('hello', array(FooInterface::class, 'foo')));
+        $var = [new ClassStub('hello', [FooInterface::class, 'foo'])];
 
         $cloner = new VarCloner();
         $dumper = new HtmlDumper();
         $dumper->setDumpHeader('<foo></foo>');
         $dumper->setDumpBoundaries('<bar>', '</bar>');
-        $dump = $dumper->dump($cloner->cloneVar($var), true, array('fileLinkFormat' => '%f:%l'));
+        $dump = $dumper->dump($cloner->cloneVar($var), true, ['fileLinkFormat' => '%f:%l']);
 
         $expectedDump = <<<'EODUMP'
 <foo></foo><bar><span class=sf-dump-note>array:1</span> [<samp>
@@ -151,7 +151,7 @@ public function testClassStub()
 
     public function testClassStubWithNotExistingClass()
     {
-        $var = array(new ClassStub(NotExisting::class));
+        $var = [new ClassStub(NotExisting::class)];
 
         $cloner = new VarCloner();
         $dumper = new HtmlDumper();
@@ -172,13 +172,13 @@ public function testClassStubWithNotExistingClass()
 
     public function testClassStubWithNotExistingMethod()
     {
-        $var = array(new ClassStub('hello', array(FooInterface::class, 'missing')));
+        $var = [new ClassStub('hello', [FooInterface::class, 'missing'])];
 
         $cloner = new VarCloner();
         $dumper = new HtmlDumper();
         $dumper->setDumpHeader('<foo></foo>');
         $dumper->setDumpBoundaries('<bar>', '</bar>');
-        $dump = $dumper->dump($cloner->cloneVar($var), true, array('fileLinkFormat' => '%f:%l'));
+        $dump = $dumper->dump($cloner->cloneVar($var), true, ['fileLinkFormat' => '%f:%l']);
 
         $expectedDump = <<<'EODUMP'
 <foo></foo><bar><span class=sf-dump-note>array:1</span> [<samp>
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/XmlReaderCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/XmlReaderCasterTest.php
index 374d298af163..1d7b3f62787a 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/XmlReaderCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/XmlReaderCasterTest.php
@@ -66,15 +66,15 @@ public function testNodes($seek, $expectedDump)
 
     public function provideNodes()
     {
-        return array(
-            array(0, <<<'EODUMP'
+        return [
+            [0, <<<'EODUMP'
 XMLReader {
   +nodeType: NONE
    …13
 }
 EODUMP
-            ),
-            array(1, <<<'EODUMP'
+            ],
+            [1, <<<'EODUMP'
 XMLReader {
   +localName: "foo"
   +nodeType: ELEMENT
@@ -82,8 +82,8 @@ public function provideNodes()
    …11
 }
 EODUMP
-            ),
-            array(2, <<<'EODUMP'
+            ],
+            [2, <<<'EODUMP'
 XMLReader {
   +localName: "#text"
   +nodeType: SIGNIFICANT_WHITESPACE
@@ -96,8 +96,8 @@ public function provideNodes()
    …9
 }
 EODUMP
-            ),
-            array(3, <<<'EODUMP'
+            ],
+            [3, <<<'EODUMP'
 XMLReader {
   +localName: "bar"
   +nodeType: ELEMENT
@@ -106,8 +106,8 @@ public function provideNodes()
    …10
 }
 EODUMP
-            ),
-            array(4, <<<'EODUMP'
+            ],
+            [4, <<<'EODUMP'
 XMLReader {
   +localName: "bar"
   +nodeType: END_ELEMENT
@@ -116,8 +116,8 @@ public function provideNodes()
    …10
 }
 EODUMP
-            ),
-            array(6, <<<'EODUMP'
+            ],
+            [6, <<<'EODUMP'
 XMLReader {
   +localName: "bar"
   +nodeType: ELEMENT
@@ -127,8 +127,8 @@ public function provideNodes()
    …9
 }
 EODUMP
-            ),
-            array(9, <<<'EODUMP'
+            ],
+            [9, <<<'EODUMP'
 XMLReader {
   +localName: "#text"
   +nodeType: TEXT
@@ -138,8 +138,8 @@ public function provideNodes()
    …9
 }
 EODUMP
-            ),
-            array(12, <<<'EODUMP'
+            ],
+            [12, <<<'EODUMP'
 XMLReader {
   +localName: "bar"
   +nodeType: ELEMENT
@@ -149,8 +149,8 @@ public function provideNodes()
    …9
 }
 EODUMP
-            ),
-            array(13, <<<'EODUMP'
+            ],
+            [13, <<<'EODUMP'
 XMLReader {
   +localName: "bar"
   +nodeType: END_ELEMENT
@@ -159,8 +159,8 @@ public function provideNodes()
    …10
 }
 EODUMP
-            ),
-            array(15, <<<'EODUMP'
+            ],
+            [15, <<<'EODUMP'
 XMLReader {
   +localName: "bar"
   +nodeType: ELEMENT
@@ -170,8 +170,8 @@ public function provideNodes()
    …9
 }
 EODUMP
-            ),
-            array(16, <<<'EODUMP'
+            ],
+            [16, <<<'EODUMP'
 XMLReader {
   +localName: "#text"
   +nodeType: SIGNIFICANT_WHITESPACE
@@ -184,8 +184,8 @@ public function provideNodes()
    …9
 }
 EODUMP
-            ),
-            array(17, <<<'EODUMP'
+            ],
+            [17, <<<'EODUMP'
 XMLReader {
   +localName: "baz"
   +prefix: "baz"
@@ -196,8 +196,8 @@ public function provideNodes()
    …8
 }
 EODUMP
-            ),
-            array(18, <<<'EODUMP'
+            ],
+            [18, <<<'EODUMP'
 XMLReader {
   +localName: "baz"
   +prefix: "baz"
@@ -208,8 +208,8 @@ public function provideNodes()
    …8
 }
 EODUMP
-            ),
-            array(19, <<<'EODUMP'
+            ],
+            [19, <<<'EODUMP'
 XMLReader {
   +localName: "#text"
   +nodeType: SIGNIFICANT_WHITESPACE
@@ -222,8 +222,8 @@ public function provideNodes()
    …9
 }
 EODUMP
-            ),
-            array(21, <<<'EODUMP'
+            ],
+            [21, <<<'EODUMP'
 XMLReader {
   +localName: "#text"
   +nodeType: SIGNIFICANT_WHITESPACE
@@ -233,8 +233,8 @@ public function provideNodes()
    …9
 }
 EODUMP
-            ),
-            array(22, <<<'EODUMP'
+            ],
+            [22, <<<'EODUMP'
 XMLReader {
   +localName: "foo"
   +nodeType: END_ELEMENT
@@ -242,7 +242,7 @@ public function provideNodes()
    …11
 }
 EODUMP
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/VarDumper/Tests/Cloner/DataTest.php b/src/Symfony/Component/VarDumper/Tests/Cloner/DataTest.php
index d10951be93de..7d20bced35a4 100644
--- a/src/Symfony/Component/VarDumper/Tests/Cloner/DataTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Cloner/DataTest.php
@@ -21,9 +21,9 @@ class DataTest extends TestCase
 {
     public function testBasicData()
     {
-        $values = array(1 => 123, 4.5, 'abc', null, false);
+        $values = [1 => 123, 4.5, 'abc', null, false];
         $data = $this->cloneVar($values);
-        $clonedValues = array();
+        $clonedValues = [];
 
         $this->assertInstanceOf(Data::class, $data);
         $this->assertCount(\count($values), $data);
@@ -62,7 +62,7 @@ public function testObject()
 
     public function testArray()
     {
-        $values = array(array(), array(123));
+        $values = [[], [123]];
         $data = $this->cloneVar($values);
 
         $this->assertSame($values, $data->getValue(true));
@@ -83,7 +83,7 @@ public function testArray()
 
     public function testStub()
     {
-        $data = $this->cloneVar(array(new ClassStub('stdClass')));
+        $data = $this->cloneVar([new ClassStub('stdClass')]);
         $data = $data[0];
 
         $this->assertSame('string', $data->getType());
@@ -93,15 +93,15 @@ public function testStub()
 
     public function testHardRefs()
     {
-        $values = array(array());
+        $values = [[]];
         $values[1] = &$values[0];
         $values[2][0] = &$values[2];
 
         $data = $this->cloneVar($values);
 
-        $this->assertSame(array(), $data[0]->getValue());
-        $this->assertSame(array(), $data[1]->getValue());
-        $this->assertEquals(array($data[2]->getValue()), $data[2]->getValue(true));
+        $this->assertSame([], $data[0]->getValue());
+        $this->assertSame([], $data[1]->getValue());
+        $this->assertEquals([$data[2]->getValue()], $data[2]->getValue(true));
 
         $this->assertSame('array (count=3)', (string) $data);
     }
diff --git a/src/Symfony/Component/VarDumper/Tests/Cloner/VarClonerTest.php b/src/Symfony/Component/VarDumper/Tests/Cloner/VarClonerTest.php
index 12fabcf08cb0..3b180af49810 100644
--- a/src/Symfony/Component/VarDumper/Tests/Cloner/VarClonerTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Cloner/VarClonerTest.php
@@ -21,7 +21,7 @@ class VarClonerTest extends TestCase
 {
     public function testMaxIntBoundary()
     {
-        $data = array(PHP_INT_MAX => 123);
+        $data = [PHP_INT_MAX => 123];
 
         $cloner = new VarCloner();
         $clone = $cloner->cloneVar($data);
@@ -149,42 +149,42 @@ public function testClone()
     public function testLimits()
     {
         // Level 0:
-        $data = array(
+        $data = [
             // Level 1:
-            array(
+            [
                 // Level 2:
-                array(
+                [
                     // Level 3:
                     'Level 3 Item 0',
                     'Level 3 Item 1',
                     'Level 3 Item 2',
                     'Level 3 Item 3',
-                ),
-                array(
+                ],
+                [
                     'Level 3 Item 4',
                     'Level 3 Item 5',
                     'Level 3 Item 6',
-                ),
-                array(
+                ],
+                [
                     'Level 3 Item 7',
-                ),
-            ),
-            array(
-                array(
+                ],
+            ],
+            [
+                [
                     'Level 3 Item 8',
-                ),
+                ],
                 'Level 2 Item 0',
-            ),
-            array(
+            ],
+            [
                 'Level 2 Item 1',
-            ),
+            ],
             'Level 1 Item 0',
-            array(
+            [
                 // Test setMaxString:
                 'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
                 'SHORT',
-            ),
-        );
+            ],
+        ];
 
         $cloner = new VarCloner();
         $cloner->setMinDepth(2);
@@ -381,16 +381,16 @@ public function testJsonCast()
 
     public function testCaster()
     {
-        $cloner = new VarCloner(array(
+        $cloner = new VarCloner([
             '*' => function ($obj, $array) {
-                return array('foo' => 123);
+                return ['foo' => 123];
             },
             __CLASS__ => function ($obj, $array) {
                 ++$array['foo'];
 
                 return $array;
             },
-        ));
+        ]);
         $clone = $cloner->cloneVar($this);
 
         $expected = <<<EOTXT
diff --git a/src/Symfony/Component/VarDumper/Tests/Dumper/CliDumperTest.php b/src/Symfony/Component/VarDumper/Tests/Dumper/CliDumperTest.php
index 298c33e6293d..16c1968f25a7 100644
--- a/src/Symfony/Component/VarDumper/Tests/Dumper/CliDumperTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Dumper/CliDumperTest.php
@@ -32,13 +32,13 @@ public function testGet()
         $dumper = new CliDumper('php://output');
         $dumper->setColors(false);
         $cloner = new VarCloner();
-        $cloner->addCasters(array(
+        $cloner->addCasters([
             ':stream' => function ($res, $a) {
                 unset($a['uri'], $a['wrapper_data']);
 
                 return $a;
             },
-        ));
+        ]);
         $data = $cloner->cloneVar($var);
 
         ob_start();
@@ -119,11 +119,11 @@ public function testDumpWithCommaFlag($expected, $flags)
         $dumper->setColors(false);
         $cloner = new VarCloner();
 
-        $var = array(
-            'array' => array('a', 'b'),
+        $var = [
+            'array' => ['a', 'b'],
             'string' => 'hello',
             'multiline string' => "this\nis\na\multiline\nstring",
-        );
+        ];
 
         $dump = $dumper->dump($cloner->cloneVar($var), true);
 
@@ -179,7 +179,7 @@ public function provideDumpWithCommaFlagTests()
 
 EOTXT;
 
-        yield array($expected, CliDumper::DUMP_COMMA_SEPARATOR);
+        yield [$expected, CliDumper::DUMP_COMMA_SEPARATOR];
 
         $expected = <<<'EOTXT'
 array:3 [
@@ -198,7 +198,7 @@ public function provideDumpWithCommaFlagTests()
 
 EOTXT;
 
-        yield array($expected, CliDumper::DUMP_TRAILING_COMMA);
+        yield [$expected, CliDumper::DUMP_TRAILING_COMMA];
     }
 
     /**
@@ -261,7 +261,7 @@ public function testJsonCast()
 
     public function testObjectCast()
     {
-        $var = (object) array(1 => 1);
+        $var = (object) [1 => 1];
         $var->{1} = 2;
 
         if (\PHP_VERSION_ID >= 70200) {
@@ -322,10 +322,10 @@ public function testFlags()
         putenv('DUMP_LIGHT_ARRAY=1');
         putenv('DUMP_STRING_LENGTH=1');
 
-        $var = array(
+        $var = [
             range(1, 3),
-            array('foo', 2 => 'bar'),
-        );
+            ['foo', 2 => 'bar'],
+        ];
 
         $this->assertDumpEquals(
             <<<EOTXT
@@ -362,14 +362,14 @@ public function testThrowingCaster()
         $dumper = new CliDumper();
         $dumper->setColors(false);
         $cloner = new VarCloner();
-        $cloner->addCasters(array(
+        $cloner->addCasters([
             ':stream' => function ($res, $a) {
                 unset($a['wrapper_data']);
 
                 return $a;
             },
-        ));
-        $cloner->addCasters(array(
+        ]);
+        $cloner->addCasters([
             ':stream' => eval('return function () use ($twig) {
                 try {
                     $twig->render(array());
@@ -377,7 +377,7 @@ public function testThrowingCaster()
                     throw $e->getPrevious();
                 }
             };'),
-        ));
+        ]);
         $ref = (int) $out;
 
         $data = $cloner->cloneVar($out);
@@ -419,7 +419,7 @@ public function testThrowingCaster()
 
     public function testRefsInProperties()
     {
-        $var = (object) array('foo' => 'foo');
+        $var = (object) ['foo' => 'foo'];
         $var->bar = &$var->foo;
 
         $dumper = new CliDumper();
@@ -580,12 +580,12 @@ private function getSpecialVars()
         }
 
         $var = function &() {
-            $var = array();
+            $var = [];
             $var[] = &$var;
 
             return $var;
         };
 
-        return array($var(), $GLOBALS, &$GLOBALS);
+        return [$var(), $GLOBALS, &$GLOBALS];
     }
 }
diff --git a/src/Symfony/Component/VarDumper/Tests/Dumper/FunctionsTest.php b/src/Symfony/Component/VarDumper/Tests/Dumper/FunctionsTest.php
index 81ecdddc5682..0bd596c2adc4 100644
--- a/src/Symfony/Component/VarDumper/Tests/Dumper/FunctionsTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Dumper/FunctionsTest.php
@@ -43,7 +43,7 @@ public function testDumpReturnsAllArgsInArray()
         $return = dump($var1, $var2, $var3);
         $out = ob_get_clean();
 
-        $this->assertEquals(array($var1, $var2, $var3), $return);
+        $this->assertEquals([$var1, $var2, $var3], $return);
     }
 
     protected function setupVarDumper()
diff --git a/src/Symfony/Component/VarDumper/Tests/Dumper/HtmlDumperTest.php b/src/Symfony/Component/VarDumper/Tests/Dumper/HtmlDumperTest.php
index 98ca471ac1c2..8a7e68ebf0c0 100644
--- a/src/Symfony/Component/VarDumper/Tests/Dumper/HtmlDumperTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Dumper/HtmlDumperTest.php
@@ -32,13 +32,13 @@ public function testGet()
         $dumper->setDumpHeader('<foo></foo>');
         $dumper->setDumpBoundaries('<bar>', '</bar>');
         $cloner = new VarCloner();
-        $cloner->addCasters(array(
+        $cloner->addCasters([
             ':stream' => function ($res, $a) {
                 unset($a['uri'], $a['wrapper_data']);
 
                 return $a;
             },
-        ));
+        ]);
         $data = $cloner->cloneVar($var);
 
         ob_start();
diff --git a/src/Symfony/Component/VarDumper/Tests/Test/VarDumperTestTraitTest.php b/src/Symfony/Component/VarDumper/Tests/Test/VarDumperTestTraitTest.php
index 464d67f6cec0..18042fb3bf59 100644
--- a/src/Symfony/Component/VarDumper/Tests/Test/VarDumperTestTraitTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Test/VarDumperTestTraitTest.php
@@ -21,7 +21,7 @@ class VarDumperTestTraitTest extends TestCase
     public function testItComparesLargeData()
     {
         $howMany = 700;
-        $data = array_fill_keys(range(0, $howMany), array('a', 'b', 'c', 'd'));
+        $data = array_fill_keys(range(0, $howMany), ['a', 'b', 'c', 'd']);
 
         $expected = sprintf("array:%d [\n", $howMany + 1);
         for ($i = 0; $i <= $howMany; ++$i) {
diff --git a/src/Symfony/Component/VarDumper/VarDumper.php b/src/Symfony/Component/VarDumper/VarDumper.php
index a9ed05b3b38b..2ef20c064b01 100644
--- a/src/Symfony/Component/VarDumper/VarDumper.php
+++ b/src/Symfony/Component/VarDumper/VarDumper.php
@@ -29,7 +29,7 @@ public static function dump($var)
     {
         if (null === self::$handler) {
             $cloner = new VarCloner();
-            $dumper = \in_array(\PHP_SAPI, array('cli', 'phpdbg'), true) ? new CliDumper() : new HtmlDumper();
+            $dumper = \in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) ? new CliDumper() : new HtmlDumper();
             self::$handler = function ($var) use ($cloner, $dumper) {
                 $dumper->dump($cloner->cloneVar($var));
             };
diff --git a/src/Symfony/Component/WebLink/EventListener/AddLinkHeaderListener.php b/src/Symfony/Component/WebLink/EventListener/AddLinkHeaderListener.php
index ef2fdee79d66..3d04f9a13fb2 100644
--- a/src/Symfony/Component/WebLink/EventListener/AddLinkHeaderListener.php
+++ b/src/Symfony/Component/WebLink/EventListener/AddLinkHeaderListener.php
@@ -52,6 +52,6 @@ public function onKernelResponse(FilterResponseEvent $event)
      */
     public static function getSubscribedEvents()
     {
-        return array(KernelEvents::RESPONSE => 'onKernelResponse');
+        return [KernelEvents::RESPONSE => 'onKernelResponse'];
     }
 }
diff --git a/src/Symfony/Component/WebLink/HttpHeaderSerializer.php b/src/Symfony/Component/WebLink/HttpHeaderSerializer.php
index e2ef3d2f17b5..b329fd373d59 100644
--- a/src/Symfony/Component/WebLink/HttpHeaderSerializer.php
+++ b/src/Symfony/Component/WebLink/HttpHeaderSerializer.php
@@ -31,13 +31,13 @@ final class HttpHeaderSerializer
      */
     public function serialize($links)
     {
-        $elements = array();
+        $elements = [];
         foreach ($links as $link) {
             if ($link->isTemplated()) {
                 continue;
             }
 
-            $attributesParts = array('', sprintf('rel="%s"', implode(' ', $link->getRels())));
+            $attributesParts = ['', sprintf('rel="%s"', implode(' ', $link->getRels()))];
             foreach ($link->getAttributes() as $key => $value) {
                 if (\is_array($value)) {
                     foreach ($value as $v) {
diff --git a/src/Symfony/Component/WebLink/Tests/EventListener/AddLinkHeaderListenerTest.php b/src/Symfony/Component/WebLink/Tests/EventListener/AddLinkHeaderListenerTest.php
index c592eb231c94..5a714715789f 100644
--- a/src/Symfony/Component/WebLink/Tests/EventListener/AddLinkHeaderListenerTest.php
+++ b/src/Symfony/Component/WebLink/Tests/EventListener/AddLinkHeaderListenerTest.php
@@ -28,8 +28,8 @@ class AddLinkHeaderListenerTest extends TestCase
 {
     public function testOnKernelResponse()
     {
-        $request = new Request(array(), array(), array('_links' => new GenericLinkProvider(array(new Link('preload', '/foo')))));
-        $response = new Response('', 200, array('Link' => '<https://demo.api-platform.com/docs.jsonld>; rel="http://www.w3.org/ns/hydra/core#apiDocumentation"'));
+        $request = new Request([], [], ['_links' => new GenericLinkProvider([new Link('preload', '/foo')])]);
+        $response = new Response('', 200, ['Link' => '<https://demo.api-platform.com/docs.jsonld>; rel="http://www.w3.org/ns/hydra/core#apiDocumentation"']);
 
         $subscriber = new AddLinkHeaderListener();
 
@@ -42,16 +42,16 @@ public function testOnKernelResponse()
 
         $this->assertInstanceOf(EventSubscriberInterface::class, $subscriber);
 
-        $expected = array(
+        $expected = [
             '<https://demo.api-platform.com/docs.jsonld>; rel="http://www.w3.org/ns/hydra/core#apiDocumentation"',
             '</foo>; rel="preload"',
-        );
+        ];
 
         $this->assertEquals($expected, $response->headers->get('Link', null, false));
     }
 
     public function testSubscribedEvents()
     {
-        $this->assertEquals(array(KernelEvents::RESPONSE => 'onKernelResponse'), AddLinkHeaderListener::getSubscribedEvents());
+        $this->assertEquals([KernelEvents::RESPONSE => 'onKernelResponse'], AddLinkHeaderListener::getSubscribedEvents());
     }
 }
diff --git a/src/Symfony/Component/WebLink/Tests/HttpHeaderSerializerTest.php b/src/Symfony/Component/WebLink/Tests/HttpHeaderSerializerTest.php
index 553371fbb414..fb4bbd96f210 100644
--- a/src/Symfony/Component/WebLink/Tests/HttpHeaderSerializerTest.php
+++ b/src/Symfony/Component/WebLink/Tests/HttpHeaderSerializerTest.php
@@ -29,19 +29,19 @@ protected function setUp()
 
     public function testSerialize()
     {
-        $links = array(
+        $links = [
             new Link('prerender', '/1'),
             (new Link('dns-prefetch', '/2'))->withAttribute('pr', 0.7),
             (new Link('preload', '/3'))->withAttribute('as', 'script')->withAttribute('nopush', false),
             (new Link('preload', '/4'))->withAttribute('as', 'image')->withAttribute('nopush', true),
-            (new Link('alternate', '/5'))->withRel('next')->withAttribute('hreflang', array('fr', 'de'))->withAttribute('title', 'Hello'),
-        );
+            (new Link('alternate', '/5'))->withRel('next')->withAttribute('hreflang', ['fr', 'de'])->withAttribute('title', 'Hello'),
+        ];
 
         $this->assertEquals('</1>; rel="prerender",</2>; rel="dns-prefetch"; pr="0.7",</3>; rel="preload"; as="script",</4>; rel="preload"; as="image"; nopush,</5>; rel="alternate next"; hreflang="fr"; hreflang="de"; title="Hello"', $this->serializer->serialize($links));
     }
 
     public function testSerializeEmpty()
     {
-        $this->assertNull($this->serializer->serialize(array()));
+        $this->assertNull($this->serializer->serialize([]));
     }
 }
diff --git a/src/Symfony/Component/Workflow/Definition.php b/src/Symfony/Component/Workflow/Definition.php
index ec0a0150116c..e6d23a2f07a6 100644
--- a/src/Symfony/Component/Workflow/Definition.php
+++ b/src/Symfony/Component/Workflow/Definition.php
@@ -21,8 +21,8 @@
  */
 final class Definition
 {
-    private $places = array();
-    private $transitions = array();
+    private $places = [];
+    private $transitions = [];
     private $initialPlace;
 
     /**
diff --git a/src/Symfony/Component/Workflow/DefinitionBuilder.php b/src/Symfony/Component/Workflow/DefinitionBuilder.php
index 16d66286efb4..87f4566db768 100644
--- a/src/Symfony/Component/Workflow/DefinitionBuilder.php
+++ b/src/Symfony/Component/Workflow/DefinitionBuilder.php
@@ -22,15 +22,15 @@
  */
 class DefinitionBuilder
 {
-    private $places = array();
-    private $transitions = array();
+    private $places = [];
+    private $transitions = [];
     private $initialPlace;
 
     /**
      * @param string[]     $places
      * @param Transition[] $transitions
      */
-    public function __construct(array $places = array(), array $transitions = array())
+    public function __construct(array $places = [], array $transitions = [])
     {
         $this->addPlaces($places);
         $this->addTransitions($transitions);
@@ -51,8 +51,8 @@ public function build()
      */
     public function reset()
     {
-        $this->places = array();
-        $this->transitions = array();
+        $this->places = [];
+        $this->transitions = [];
         $this->initialPlace = null;
 
         return $this;
diff --git a/src/Symfony/Component/Workflow/Dumper/DumperInterface.php b/src/Symfony/Component/Workflow/Dumper/DumperInterface.php
index b0eebd34f195..797c63e32b59 100644
--- a/src/Symfony/Component/Workflow/Dumper/DumperInterface.php
+++ b/src/Symfony/Component/Workflow/Dumper/DumperInterface.php
@@ -31,5 +31,5 @@ interface DumperInterface
      *
      * @return string The representation of the workflow
      */
-    public function dump(Definition $definition, Marking $marking = null, array $options = array());
+    public function dump(Definition $definition, Marking $marking = null, array $options = []);
 }
diff --git a/src/Symfony/Component/Workflow/Dumper/GraphvizDumper.php b/src/Symfony/Component/Workflow/Dumper/GraphvizDumper.php
index 3681b6f1391a..88a6888ad953 100644
--- a/src/Symfony/Component/Workflow/Dumper/GraphvizDumper.php
+++ b/src/Symfony/Component/Workflow/Dumper/GraphvizDumper.php
@@ -26,11 +26,11 @@
  */
 class GraphvizDumper implements DumperInterface
 {
-    protected static $defaultOptions = array(
-        'graph' => array('ratio' => 'compress', 'rankdir' => 'LR'),
-        'node' => array('fontsize' => 9, 'fontname' => 'Arial', 'color' => '#333333', 'fillcolor' => 'lightblue', 'fixedsize' => true, 'width' => 1),
-        'edge' => array('fontsize' => 9, 'fontname' => 'Arial', 'color' => '#333333', 'arrowhead' => 'normal', 'arrowsize' => 0.5),
-    );
+    protected static $defaultOptions = [
+        'graph' => ['ratio' => 'compress', 'rankdir' => 'LR'],
+        'node' => ['fontsize' => 9, 'fontname' => 'Arial', 'color' => '#333333', 'fillcolor' => 'lightblue', 'fixedsize' => true, 'width' => 1],
+        'edge' => ['fontsize' => 9, 'fontname' => 'Arial', 'color' => '#333333', 'arrowhead' => 'normal', 'arrowsize' => 0.5],
+    ];
 
     /**
      * {@inheritdoc}
@@ -43,7 +43,7 @@ class GraphvizDumper implements DumperInterface
      *  * node: The default options for nodes (places + transitions)
      *  * edge: The default options for edges
      */
-    public function dump(Definition $definition, Marking $marking = null, array $options = array())
+    public function dump(Definition $definition, Marking $marking = null, array $options = [])
     {
         $places = $this->findPlaces($definition, $marking);
         $transitions = $this->findTransitions($definition);
@@ -63,10 +63,10 @@ public function dump(Definition $definition, Marking $marking = null, array $opt
      */
     protected function findPlaces(Definition $definition, Marking $marking = null)
     {
-        $places = array();
+        $places = [];
 
         foreach ($definition->getPlaces() as $place) {
-            $attributes = array();
+            $attributes = [];
             if ($place === $definition->getInitialPlace()) {
                 $attributes['style'] = 'filled';
             }
@@ -74,9 +74,9 @@ protected function findPlaces(Definition $definition, Marking $marking = null)
                 $attributes['color'] = '#FF0000';
                 $attributes['shape'] = 'doublecircle';
             }
-            $places[$place] = array(
+            $places[$place] = [
                 'attributes' => $attributes,
-            );
+            ];
         }
 
         return $places;
@@ -87,13 +87,13 @@ protected function findPlaces(Definition $definition, Marking $marking = null)
      */
     protected function findTransitions(Definition $definition)
     {
-        $transitions = array();
+        $transitions = [];
 
         foreach ($definition->getTransitions() as $transition) {
-            $transitions[] = array(
-                'attributes' => array('shape' => 'box', 'regular' => true),
+            $transitions[] = [
+                'attributes' => ['shape' => 'box', 'regular' => true],
                 'name' => $transition->getName(),
-            );
+            ];
         }
 
         return $transitions;
@@ -132,22 +132,22 @@ protected function addTransitions(array $transitions)
      */
     protected function findEdges(Definition $definition)
     {
-        $dotEdges = array();
+        $dotEdges = [];
 
         foreach ($definition->getTransitions() as $transition) {
             foreach ($transition->getFroms() as $from) {
-                $dotEdges[] = array(
+                $dotEdges[] = [
                     'from' => $from,
                     'to' => $transition->getName(),
                     'direction' => 'from',
-                );
+                ];
             }
             foreach ($transition->getTos() as $to) {
-                $dotEdges[] = array(
+                $dotEdges[] = [
                     'from' => $transition->getName(),
                     'to' => $to,
                     'direction' => 'to',
-                );
+                ];
             }
         }
 
@@ -203,7 +203,7 @@ protected function dotize($id)
 
     private function addAttributes(array $attributes)
     {
-        $code = array();
+        $code = [];
 
         foreach ($attributes as $k => $v) {
             $code[] = sprintf('%s="%s"', $k, $v);
@@ -214,7 +214,7 @@ private function addAttributes(array $attributes)
 
     private function addOptions(array $options)
     {
-        $code = array();
+        $code = [];
 
         foreach ($options as $k => $v) {
             $code[] = sprintf('%s="%s"', $k, $v);
diff --git a/src/Symfony/Component/Workflow/Dumper/StateMachineGraphvizDumper.php b/src/Symfony/Component/Workflow/Dumper/StateMachineGraphvizDumper.php
index 9f68e1daf72f..7c35dc0efc3d 100644
--- a/src/Symfony/Component/Workflow/Dumper/StateMachineGraphvizDumper.php
+++ b/src/Symfony/Component/Workflow/Dumper/StateMachineGraphvizDumper.php
@@ -27,7 +27,7 @@ class StateMachineGraphvizDumper extends GraphvizDumper
      *  * node: The default options for nodes (places)
      *  * edge: The default options for edges
      */
-    public function dump(Definition $definition, Marking $marking = null, array $options = array())
+    public function dump(Definition $definition, Marking $marking = null, array $options = [])
     {
         $places = $this->findPlaces($definition, $marking);
         $edges = $this->findEdges($definition);
@@ -46,15 +46,15 @@ public function dump(Definition $definition, Marking $marking = null, array $opt
      */
     protected function findEdges(Definition $definition)
     {
-        $edges = array();
+        $edges = [];
 
         foreach ($definition->getTransitions() as $transition) {
             foreach ($transition->getFroms() as $from) {
                 foreach ($transition->getTos() as $to) {
-                    $edges[$from][] = array(
+                    $edges[$from][] = [
                         'name' => $transition->getName(),
                         'to' => $to,
-                    );
+                    ];
                 }
             }
         }
diff --git a/src/Symfony/Component/Workflow/EventListener/AuditTrailListener.php b/src/Symfony/Component/Workflow/EventListener/AuditTrailListener.php
index ba56b586016e..95a9590cef4b 100644
--- a/src/Symfony/Component/Workflow/EventListener/AuditTrailListener.php
+++ b/src/Symfony/Component/Workflow/EventListener/AuditTrailListener.php
@@ -48,10 +48,10 @@ public function onEnter(Event $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            'workflow.leave' => array('onLeave'),
-            'workflow.transition' => array('onTransition'),
-            'workflow.enter' => array('onEnter'),
-        );
+        return [
+            'workflow.leave' => ['onLeave'],
+            'workflow.transition' => ['onTransition'],
+            'workflow.enter' => ['onEnter'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Workflow/EventListener/GuardListener.php b/src/Symfony/Component/Workflow/EventListener/GuardListener.php
index b2e6b8c7b334..c8f00d9e11d6 100644
--- a/src/Symfony/Component/Workflow/EventListener/GuardListener.php
+++ b/src/Symfony/Component/Workflow/EventListener/GuardListener.php
@@ -84,7 +84,7 @@ private function getVariables(GuardEvent $event)
             $roles = $token->getRoles();
         }
 
-        $variables = array(
+        $variables = [
             'token' => $token,
             'user' => $token->getUser(),
             'subject' => $event->getSubject(),
@@ -97,7 +97,7 @@ private function getVariables(GuardEvent $event)
             'trust_resolver' => $this->trustResolver,
             // needed for the is_valid expression function
             'validator' => $this->validator,
-        );
+        ];
 
         return $variables;
     }
diff --git a/src/Symfony/Component/Workflow/Marking.php b/src/Symfony/Component/Workflow/Marking.php
index d44ae9fb0863..8cb2dbedb8fa 100644
--- a/src/Symfony/Component/Workflow/Marking.php
+++ b/src/Symfony/Component/Workflow/Marking.php
@@ -18,12 +18,12 @@
  */
 class Marking
 {
-    private $places = array();
+    private $places = [];
 
     /**
      * @param int[] $representation Keys are the place name and values should be 1
      */
-    public function __construct(array $representation = array())
+    public function __construct(array $representation = [])
     {
         foreach ($representation as $place => $nbToken) {
             $this->mark($place);
diff --git a/src/Symfony/Component/Workflow/MarkingStore/MultipleStateMarkingStore.php b/src/Symfony/Component/Workflow/MarkingStore/MultipleStateMarkingStore.php
index 6d2d0884893d..926f96fa85ec 100644
--- a/src/Symfony/Component/Workflow/MarkingStore/MultipleStateMarkingStore.php
+++ b/src/Symfony/Component/Workflow/MarkingStore/MultipleStateMarkingStore.php
@@ -44,7 +44,7 @@ public function __construct($property = 'marking', PropertyAccessorInterface $pr
      */
     public function getMarking($subject)
     {
-        return new Marking($this->propertyAccessor->getValue($subject, $this->property) ?: array());
+        return new Marking($this->propertyAccessor->getValue($subject, $this->property) ?: []);
     }
 
     /**
diff --git a/src/Symfony/Component/Workflow/MarkingStore/SingleStateMarkingStore.php b/src/Symfony/Component/Workflow/MarkingStore/SingleStateMarkingStore.php
index d6afc6aeeb76..82ddb9cd1a8c 100644
--- a/src/Symfony/Component/Workflow/MarkingStore/SingleStateMarkingStore.php
+++ b/src/Symfony/Component/Workflow/MarkingStore/SingleStateMarkingStore.php
@@ -49,7 +49,7 @@ public function getMarking($subject)
             return new Marking();
         }
 
-        return new Marking(array($placeName => 1));
+        return new Marking([$placeName => 1]);
     }
 
     /**
diff --git a/src/Symfony/Component/Workflow/Registry.php b/src/Symfony/Component/Workflow/Registry.php
index 4c41312edd36..93fb7233d16a 100644
--- a/src/Symfony/Component/Workflow/Registry.php
+++ b/src/Symfony/Component/Workflow/Registry.php
@@ -21,7 +21,7 @@
  */
 class Registry
 {
-    private $workflows = array();
+    private $workflows = [];
 
     /**
      * @param Workflow                        $workflow
@@ -35,7 +35,7 @@ public function add(Workflow $workflow, $supportStrategy)
             $supportStrategy = new ClassInstanceSupportStrategy($supportStrategy);
         }
 
-        $this->workflows[] = array($workflow, $supportStrategy);
+        $this->workflows[] = [$workflow, $supportStrategy];
     }
 
     /**
diff --git a/src/Symfony/Component/Workflow/Tests/DefinitionBuilderTest.php b/src/Symfony/Component/Workflow/Tests/DefinitionBuilderTest.php
index 20eb1c8feeed..f330777a64a7 100644
--- a/src/Symfony/Component/Workflow/Tests/DefinitionBuilderTest.php
+++ b/src/Symfony/Component/Workflow/Tests/DefinitionBuilderTest.php
@@ -13,12 +13,12 @@ class DefinitionBuilderTest extends TestCase
      */
     public function testAddPlaceInvalidName()
     {
-        $builder = new DefinitionBuilder(array('a"', 'b'));
+        $builder = new DefinitionBuilder(['a"', 'b']);
     }
 
     public function testSetInitialPlace()
     {
-        $builder = new DefinitionBuilder(array('a', 'b'));
+        $builder = new DefinitionBuilder(['a', 'b']);
         $builder->setInitialPlace('b');
         $definition = $builder->build();
 
@@ -31,7 +31,7 @@ public function testAddTransition()
 
         $transition0 = new Transition('name0', $places[0], $places[1]);
         $transition1 = new Transition('name1', $places[0], $places[1]);
-        $builder = new DefinitionBuilder($places, array($transition0));
+        $builder = new DefinitionBuilder($places, [$transition0]);
         $builder->addTransition($transition1);
 
         $definition = $builder->build();
@@ -43,7 +43,7 @@ public function testAddTransition()
 
     public function testAddPlace()
     {
-        $builder = new DefinitionBuilder(array('a'), array());
+        $builder = new DefinitionBuilder(['a'], []);
         $builder->addPlace('b');
 
         $definition = $builder->build();
diff --git a/src/Symfony/Component/Workflow/Tests/DefinitionTest.php b/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
index 8eb1b6e4cf0f..506cfee6a8da 100644
--- a/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
+++ b/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
@@ -11,7 +11,7 @@ class DefinitionTest extends TestCase
     public function testAddPlaces()
     {
         $places = range('a', 'e');
-        $definition = new Definition($places, array());
+        $definition = new Definition($places, []);
 
         $this->assertCount(5, $definition->getPlaces());
 
@@ -23,14 +23,14 @@ public function testAddPlaces()
      */
     public function testAddPlacesInvalidArgument()
     {
-        $places = array('a"', 'e"');
-        $definition = new Definition($places, array());
+        $places = ['a"', 'e"'];
+        $definition = new Definition($places, []);
     }
 
     public function testSetInitialPlace()
     {
         $places = range('a', 'e');
-        $definition = new Definition($places, array(), $places[3]);
+        $definition = new Definition($places, [], $places[3]);
 
         $this->assertEquals($places[3], $definition->getInitialPlace());
     }
@@ -41,7 +41,7 @@ public function testSetInitialPlace()
      */
     public function testSetInitialPlaceAndPlaceIsNotDefined()
     {
-        $definition = new Definition(array(), array(), 'd');
+        $definition = new Definition([], [], 'd');
     }
 
     public function testAddTransition()
@@ -49,7 +49,7 @@ public function testAddTransition()
         $places = range('a', 'b');
 
         $transition = new Transition('name', $places[0], $places[1]);
-        $definition = new Definition($places, array($transition));
+        $definition = new Definition($places, [$transition]);
 
         $this->assertCount(1, $definition->getTransitions());
         $this->assertSame($transition, $definition->getTransitions()[0]);
@@ -63,7 +63,7 @@ public function testAddTransitionAndFromPlaceIsNotDefined()
     {
         $places = range('a', 'b');
 
-        new Definition($places, array(new Transition('name', 'c', $places[1])));
+        new Definition($places, [new Transition('name', 'c', $places[1])]);
     }
 
     /**
@@ -74,6 +74,6 @@ public function testAddTransitionAndToPlaceIsNotDefined()
     {
         $places = range('a', 'b');
 
-        new Definition($places, array(new Transition('name', $places[0], 'c')));
+        new Definition($places, [new Transition('name', $places[0], 'c')]);
     }
 }
diff --git a/src/Symfony/Component/Workflow/Tests/DependencyInjection/ValidateWorkflowsPassTest.php b/src/Symfony/Component/Workflow/Tests/DependencyInjection/ValidateWorkflowsPassTest.php
index 1a38588f27cd..c9cb84024970 100644
--- a/src/Symfony/Component/Workflow/Tests/DependencyInjection/ValidateWorkflowsPassTest.php
+++ b/src/Symfony/Component/Workflow/Tests/DependencyInjection/ValidateWorkflowsPassTest.php
@@ -15,18 +15,18 @@ public function testProcess()
     {
         $container = new ContainerBuilder();
         $container->register('definition1', WorkflowDefinition::class)
-            ->addArgument(array('a', 'b', 'c'))
-            ->addArgument(array(
-                new Definition(Transition::class, array('t1', 'a', 'b')),
-                new Definition(Transition::class, array('t2', 'a', 'c')),
-            ))
-            ->addTag('workflow.definition', array('name' => 'wf1', 'type' => 'state_machine', 'marking_store' => 'foo'));
+            ->addArgument(['a', 'b', 'c'])
+            ->addArgument([
+                new Definition(Transition::class, ['t1', 'a', 'b']),
+                new Definition(Transition::class, ['t2', 'a', 'c']),
+            ])
+            ->addTag('workflow.definition', ['name' => 'wf1', 'type' => 'state_machine', 'marking_store' => 'foo']);
 
         (new ValidateWorkflowsPass())->process($container);
 
         $workflowDefinition = $container->get('definition1');
 
-        $this->assertSame(array('a' => 'a', 'b' => 'b', 'c' => 'c'), $workflowDefinition->getPlaces());
-        $this->assertEquals(array(new Transition('t1', 'a', 'b'), new Transition('t2', 'a', 'c')), $workflowDefinition->getTransitions());
+        $this->assertSame(['a' => 'a', 'b' => 'b', 'c' => 'c'], $workflowDefinition->getPlaces());
+        $this->assertEquals([new Transition('t1', 'a', 'b'), new Transition('t2', 'a', 'c')], $workflowDefinition->getTransitions());
     }
 }
diff --git a/src/Symfony/Component/Workflow/Tests/Dumper/GraphvizDumperTest.php b/src/Symfony/Component/Workflow/Tests/Dumper/GraphvizDumperTest.php
index 067cb9d41534..a5d9087ff533 100644
--- a/src/Symfony/Component/Workflow/Tests/Dumper/GraphvizDumperTest.php
+++ b/src/Symfony/Component/Workflow/Tests/Dumper/GraphvizDumperTest.php
@@ -40,23 +40,23 @@ public function testDumpWithMarking($definition, $marking, $expected)
 
     public function provideWorkflowDefinitionWithMarking()
     {
-        yield array(
+        yield [
             $this->createComplexWorkflowDefinition(),
-            new Marking(array('b' => 1)),
+            new Marking(['b' => 1]),
             $this->createComplexWorkflowDefinitionDumpWithMarking(),
-        );
+        ];
 
-        yield array(
+        yield [
             $this->createSimpleWorkflowDefinition(),
-            new Marking(array('c' => 1, 'd' => 1)),
+            new Marking(['c' => 1, 'd' => 1]),
             $this->createSimpleWorkflowDumpWithMarking(),
-        );
+        ];
     }
 
     public function provideWorkflowDefinitionWithoutMarking()
     {
-        yield array($this->createComplexWorkflowDefinition(), $this->provideComplexWorkflowDumpWithoutMarking());
-        yield array($this->createSimpleWorkflowDefinition(), $this->provideSimpleWorkflowDumpWithoutMarking());
+        yield [$this->createComplexWorkflowDefinition(), $this->provideComplexWorkflowDumpWithoutMarking()];
+        yield [$this->createSimpleWorkflowDefinition(), $this->provideSimpleWorkflowDumpWithoutMarking()];
     }
 
     public function createComplexWorkflowDefinitionDumpWithMarking()
diff --git a/src/Symfony/Component/Workflow/Tests/Dumper/StateMachineGraphvizDumperTest.php b/src/Symfony/Component/Workflow/Tests/Dumper/StateMachineGraphvizDumperTest.php
index 7277b1c65b83..473d31ecf589 100644
--- a/src/Symfony/Component/Workflow/Tests/Dumper/StateMachineGraphvizDumperTest.php
+++ b/src/Symfony/Component/Workflow/Tests/Dumper/StateMachineGraphvizDumperTest.php
@@ -48,7 +48,7 @@ public function testDumpWithoutMarking()
     public function testDumpWithMarking()
     {
         $definition = $this->createComplexStateMachineDefinition();
-        $marking = new Marking(array('b' => 1));
+        $marking = new Marking(['b' => 1]);
 
         $expected = <<<'EOGRAPH'
 digraph workflow {
diff --git a/src/Symfony/Component/Workflow/Tests/EventListener/AuditTrailListenerTest.php b/src/Symfony/Component/Workflow/Tests/EventListener/AuditTrailListenerTest.php
index beee3664cdb3..8fab0e9ec717 100644
--- a/src/Symfony/Component/Workflow/Tests/EventListener/AuditTrailListenerTest.php
+++ b/src/Symfony/Component/Workflow/Tests/EventListener/AuditTrailListenerTest.php
@@ -30,11 +30,11 @@ public function testItWorks()
 
         $workflow->apply($object, 't1');
 
-        $expected = array(
+        $expected = [
             'Leaving "a" for subject of class "stdClass" in workflow "unnamed".',
             'Transition "t1" for subject of class "stdClass" in workflow "unnamed".',
             'Entering "b" for subject of class "stdClass" in workflow "unnamed".',
-        );
+        ];
 
         $this->assertSame($expected, $logger->logs);
     }
@@ -42,9 +42,9 @@ public function testItWorks()
 
 class Logger extends AbstractLogger
 {
-    public $logs = array();
+    public $logs = [];
 
-    public function log($level, $message, array $context = array())
+    public function log($level, $message, array $context = [])
     {
         $this->logs[] = $message;
     }
diff --git a/src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php b/src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php
index 8686d74cf6ca..d27c63e5275c 100644
--- a/src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php
+++ b/src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php
@@ -25,17 +25,17 @@ class GuardListenerTest extends TestCase
 
     protected function setUp()
     {
-        $this->configuration = array(
+        $this->configuration = [
             'test_is_granted' => 'is_granted("something")',
             'test_is_valid' => 'is_valid(subject)',
-            'test_expression' => array(
+            'test_expression' => [
                 new GuardExpression(new Transition('name', 'from', 'to'), '!is_valid(subject)'),
                 new GuardExpression(new Transition('name', 'from', 'to'), 'is_valid(subject)'),
-            ),
-        );
+            ],
+        ];
         $expressionLanguage = new ExpressionLanguage();
         $token = $this->getMockBuilder(TokenInterface::class)->getMock();
-        $token->expects($this->any())->method('getRoles')->willReturn(array(new Role('ROLE_USER')));
+        $token->expects($this->any())->method('getRoles')->willReturn([new Role('ROLE_USER')]);
         $tokenStorage = $this->getMockBuilder(TokenStorageInterface::class)->getMock();
         $tokenStorage->expects($this->any())->method('getToken')->willReturn($token);
         $this->authenticationChecker = $this->getMockBuilder(AuthorizationCheckerInterface::class)->getMock();
@@ -170,7 +170,7 @@ private function configureValidator($isUsed, $valid = true)
         $this->validator
             ->expects($this->once())
             ->method('validate')
-            ->willReturn($valid ? array() : array('a violation'))
+            ->willReturn($valid ? [] : ['a violation'])
         ;
     }
 }
diff --git a/src/Symfony/Component/Workflow/Tests/MarkingStore/MultipleStateMarkingStoreTest.php b/src/Symfony/Component/Workflow/Tests/MarkingStore/MultipleStateMarkingStoreTest.php
index a0504af4b271..647ae42b4b11 100644
--- a/src/Symfony/Component/Workflow/Tests/MarkingStore/MultipleStateMarkingStoreTest.php
+++ b/src/Symfony/Component/Workflow/Tests/MarkingStore/MultipleStateMarkingStoreTest.php
@@ -24,7 +24,7 @@ public function testGetSetMarking()
 
         $markingStore->setMarking($subject, $marking);
 
-        $this->assertSame(array('first_place' => 1), $subject->myMarks);
+        $this->assertSame(['first_place' => 1], $subject->myMarks);
 
         $marking2 = $markingStore->getMarking($subject);
 
diff --git a/src/Symfony/Component/Workflow/Tests/MarkingTest.php b/src/Symfony/Component/Workflow/Tests/MarkingTest.php
index 98f031e94b96..9ed6df041c3b 100644
--- a/src/Symfony/Component/Workflow/Tests/MarkingTest.php
+++ b/src/Symfony/Component/Workflow/Tests/MarkingTest.php
@@ -9,28 +9,28 @@ class MarkingTest extends TestCase
 {
     public function testMarking()
     {
-        $marking = new Marking(array('a' => 1));
+        $marking = new Marking(['a' => 1]);
 
         $this->assertTrue($marking->has('a'));
         $this->assertFalse($marking->has('b'));
-        $this->assertSame(array('a' => 1), $marking->getPlaces());
+        $this->assertSame(['a' => 1], $marking->getPlaces());
 
         $marking->mark('b');
 
         $this->assertTrue($marking->has('a'));
         $this->assertTrue($marking->has('b'));
-        $this->assertSame(array('a' => 1, 'b' => 1), $marking->getPlaces());
+        $this->assertSame(['a' => 1, 'b' => 1], $marking->getPlaces());
 
         $marking->unmark('a');
 
         $this->assertFalse($marking->has('a'));
         $this->assertTrue($marking->has('b'));
-        $this->assertSame(array('b' => 1), $marking->getPlaces());
+        $this->assertSame(['b' => 1], $marking->getPlaces());
 
         $marking->unmark('b');
 
         $this->assertFalse($marking->has('a'));
         $this->assertFalse($marking->has('b'));
-        $this->assertSame(array(), $marking->getPlaces());
+        $this->assertSame([], $marking->getPlaces());
     }
 }
diff --git a/src/Symfony/Component/Workflow/Tests/RegistryTest.php b/src/Symfony/Component/Workflow/Tests/RegistryTest.php
index 262e7cfe59dd..25d2e1cc3b5e 100644
--- a/src/Symfony/Component/Workflow/Tests/RegistryTest.php
+++ b/src/Symfony/Component/Workflow/Tests/RegistryTest.php
@@ -18,9 +18,9 @@ protected function setUp()
     {
         $this->registry = new Registry();
 
-        $this->registry->add(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), $this->createSupportStrategy(Subject1::class));
-        $this->registry->add(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow2'), $this->createSupportStrategy(Subject2::class));
-        $this->registry->add(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow3'), $this->createSupportStrategy(Subject2::class));
+        $this->registry->add(new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), $this->createSupportStrategy(Subject1::class));
+        $this->registry->add(new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow2'), $this->createSupportStrategy(Subject2::class));
+        $this->registry->add(new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow3'), $this->createSupportStrategy(Subject2::class));
     }
 
     protected function tearDown()
@@ -72,8 +72,8 @@ public function testGetWithSuccessLegacyStrategy()
     {
         $registry = new Registry();
 
-        $registry->add(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), Subject1::class);
-        $registry->add(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow2'), Subject2::class);
+        $registry->add(new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), Subject1::class);
+        $registry->add(new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow2'), Subject2::class);
 
         $workflow = $registry->get(new Subject1());
         $this->assertInstanceOf(Workflow::class, $workflow);
diff --git a/src/Symfony/Component/Workflow/Tests/TransitionTest.php b/src/Symfony/Component/Workflow/Tests/TransitionTest.php
index 74bab16f7116..2f500ff5e5c7 100644
--- a/src/Symfony/Component/Workflow/Tests/TransitionTest.php
+++ b/src/Symfony/Component/Workflow/Tests/TransitionTest.php
@@ -21,7 +21,7 @@ public function testConstructor()
         $transition = new Transition('name', 'a', 'b');
 
         $this->assertSame('name', $transition->getName());
-        $this->assertSame(array('a'), $transition->getFroms());
-        $this->assertSame(array('b'), $transition->getTos());
+        $this->assertSame(['a'], $transition->getFroms());
+        $this->assertSame(['b'], $transition->getTos());
     }
 }
diff --git a/src/Symfony/Component/Workflow/Tests/Validator/StateMachineValidatorTest.php b/src/Symfony/Component/Workflow/Tests/Validator/StateMachineValidatorTest.php
index dccbf383049a..c43292899b89 100644
--- a/src/Symfony/Component/Workflow/Tests/Validator/StateMachineValidatorTest.php
+++ b/src/Symfony/Component/Workflow/Tests/Validator/StateMachineValidatorTest.php
@@ -15,7 +15,7 @@ class StateMachineValidatorTest extends TestCase
      */
     public function testWithMultipleTransitionWithSameNameShareInput()
     {
-        $places = array('a', 'b', 'c');
+        $places = ['a', 'b', 'c'];
         $transitions[] = new Transition('t1', 'a', 'b');
         $transitions[] = new Transition('t1', 'a', 'c');
         $definition = new Definition($places, $transitions);
@@ -41,8 +41,8 @@ public function testWithMultipleTransitionWithSameNameShareInput()
      */
     public function testWithMultipleTos()
     {
-        $places = array('a', 'b', 'c');
-        $transitions[] = new Transition('t1', 'a', array('b', 'c'));
+        $places = ['a', 'b', 'c'];
+        $transitions[] = new Transition('t1', 'a', ['b', 'c']);
         $definition = new Definition($places, $transitions);
 
         (new StateMachineValidator())->validate($definition, 'foo');
@@ -66,8 +66,8 @@ public function testWithMultipleTos()
      */
     public function testWithMultipleFroms()
     {
-        $places = array('a', 'b', 'c');
-        $transitions[] = new Transition('t1', array('a', 'b'), 'c');
+        $places = ['a', 'b', 'c'];
+        $transitions[] = new Transition('t1', ['a', 'b'], 'c');
         $definition = new Definition($places, $transitions);
 
         (new StateMachineValidator())->validate($definition, 'foo');
@@ -87,7 +87,7 @@ public function testWithMultipleFroms()
 
     public function testValid()
     {
-        $places = array('a', 'b', 'c');
+        $places = ['a', 'b', 'c'];
         $transitions[] = new Transition('t1', 'a', 'b');
         $transitions[] = new Transition('t2', 'a', 'c');
         $definition = new Definition($places, $transitions);
diff --git a/src/Symfony/Component/Workflow/Tests/Validator/WorkflowValidatorTest.php b/src/Symfony/Component/Workflow/Tests/Validator/WorkflowValidatorTest.php
index 245617b682f5..cdf10ecdaba9 100644
--- a/src/Symfony/Component/Workflow/Tests/Validator/WorkflowValidatorTest.php
+++ b/src/Symfony/Component/Workflow/Tests/Validator/WorkflowValidatorTest.php
@@ -41,7 +41,7 @@ public function testWorkflowWithInvalidNames()
     {
         $places = range('a', 'c');
 
-        $transitions = array();
+        $transitions = [];
         $transitions[] = new Transition('t0', 'c', 'b');
         $transitions[] = new Transition('t1', 'a', 'b');
         $transitions[] = new Transition('t1', 'a', 'c');
@@ -55,7 +55,7 @@ public function testSameTransitionNameButNotSamePlace()
     {
         $places = range('a', 'd');
 
-        $transitions = array();
+        $transitions = [];
         $transitions[] = new Transition('t1', 'a', 'b');
         $transitions[] = new Transition('t1', 'b', 'c');
         $transitions[] = new Transition('t1', 'd', 'c');
diff --git a/src/Symfony/Component/Workflow/Tests/WorkflowBuilderTrai
17AE
t.php b/src/Symfony/Component/Workflow/Tests/WorkflowBuilderTrait.php
index 3084be5749b7..b9d58e46701e 100644
--- a/src/Symfony/Component/Workflow/Tests/WorkflowBuilderTrait.php
+++ b/src/Symfony/Component/Workflow/Tests/WorkflowBuilderTrait.php
@@ -11,9 +11,9 @@ private function createComplexWorkflowDefinition()
     {
         $places = range('a', 'g');
 
-        $transitions = array();
-        $transitions[] = new Transition('t1', 'a', array('b', 'c'));
-        $transitions[] = new Transition('t2', array('b', 'c'), 'd');
+        $transitions = [];
+        $transitions[] = new Transition('t1', 'a', ['b', 'c']);
+        $transitions[] = new Transition('t2', ['b', 'c'], 'd');
         $transitions[] = new Transition('t3', 'd', 'e');
         $transitions[] = new Transition('t4', 'd', 'f');
         $transitions[] = new Transition('t5', 'e', 'g');
@@ -37,7 +37,7 @@ private function createSimpleWorkflowDefinition()
     {
         $places = range('a', 'c');
 
-        $transitions = array();
+        $transitions = [];
         $transitions[] = new Transition('t1', 'a', 'b');
         $transitions[] = new Transition('t2', 'b', 'c');
 
@@ -53,8 +53,8 @@ private function createWorkflowWithSameNameTransition()
     {
         $places = range('a', 'c');
 
-        $transitions = array();
-        $transitions[] = new Transition('a_to_bc', 'a', array('b', 'c'));
+        $transitions = [];
+        $transitions[] = new Transition('a_to_bc', 'a', ['b', 'c']);
         $transitions[] = new Transition('b_to_c', 'b', 'c');
         $transitions[] = new Transition('to_a', 'b', 'a');
         $transitions[] = new Transition('to_a', 'c', 'a');
@@ -79,7 +79,7 @@ private function createWorkflowWithSameNameTransition()
 
     private function createComplexStateMachineDefinition()
     {
-        $places = array('a', 'b', 'c', 'd');
+        $places = ['a', 'b', 'c', 'd'];
 
         $transitions[] = new Transition('t1', 'a', 'b');
         $transitions[] = new Transition('t1', 'd', 'b');
diff --git a/src/Symfony/Component/Workflow/Tests/WorkflowTest.php b/src/Symfony/Component/Workflow/Tests/WorkflowTest.php
index 547fb03e82cf..68ebaafcd9aa 100644
--- a/src/Symfony/Component/Workflow/Tests/WorkflowTest.php
+++ b/src/Symfony/Component/Workflow/Tests/WorkflowTest.php
@@ -25,7 +25,7 @@ public function testGetMarkingWithInvalidStoreReturn()
     {
         $subject = new \stdClass();
         $subject->marking = null;
-        $workflow = new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock());
+        $workflow = new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock());
 
         $workflow->getMarking($subject);
     }
@@ -38,7 +38,7 @@ public function testGetMarkingWithEmptyDefinition()
     {
         $subject = new \stdClass();
         $subject->marking = null;
-        $workflow = new Workflow(new Definition(array(), array()), new MultipleStateMarkingStore());
+        $workflow = new Workflow(new Definition([], []), new MultipleStateMarkingStore());
 
         $workflow->getMarking($subject);
     }
@@ -50,8 +50,8 @@ public function testGetMarkingWithEmptyDefinition()
     public function testGetMarkingWithImpossiblePlace()
     {
         $subject = new \stdClass();
-        $subject->marking = array('nope' => 1);
-        $workflow = new Workflow(new Definition(array(), array()), new MultipleStateMarkingStore());
+        $subject->marking = ['nope' => 1];
+        $workflow = new Workflow(new Definition([], []), new MultipleStateMarkingStore());
 
         $workflow->getMarking($subject);
     }
@@ -67,7 +67,7 @@ public function testGetMarkingWithEmptyInitialMarking()
 
         $this->assertInstanceOf(Marking::class, $marking);
         $this->assertTrue($marking->has('a'));
-        $this->assertSame(array('a' => 1), $subject->marking);
+        $this->assertSame(['a' => 1], $subject->marking);
     }
 
     public function testGetMarkingWithExistingMarking()
@@ -75,7 +75,7 @@ public function testGetMarkingWithExistingMarking()
         $definition = $this->createComplexWorkflowDefinition();
         $subject = new \stdClass();
         $subject->marking = null;
-        $subject->marking = array('b' => 1, 'c' => 1);
+        $subject->marking = ['b' => 1, 'c' => 1];
         $workflow = new Workflow($definition, new MultipleStateMarkingStore());
 
         $marking = $workflow->getMarking($subject);
@@ -105,19 +105,19 @@ public function testCan()
         $this->assertTrue($workflow->can($subject, 't1'));
         $this->assertFalse($workflow->can($subject, 't2'));
 
-        $subject->marking = array('b' => 1);
+        $subject->marking = ['b' => 1];
 
         $this->assertFalse($workflow->can($subject, 't1'));
         // In a workflow net, all "from" places should contain a token to enable
         // the transition.
         $this->assertFalse($workflow->can($subject, 't2'));
 
-        $subject->marking = array('b' => 1, 'c' => 1);
+        $subject->marking = ['b' => 1, 'c' => 1];
 
         $this->assertFalse($workflow->can($subject, 't1'));
         $this->assertTrue($workflow->can($subject, 't2'));
 
-        $subject->marking = array('f' => 1);
+        $subject->marking = ['f' => 1];
 
         $this->assertFalse($workflow->can($subject, 't5'));
         $this->assertTrue($workflow->can($subject, 't6'));
@@ -143,7 +143,7 @@ public function testCanDoesNotTriggerGuardEventsForNotEnabledTransitions()
         $subject = new \stdClass();
         $subject->marking = null;
 
-        $dispatchedEvents = array();
+        $dispatchedEvents = [];
         $eventDispatcher = new EventDispatcher();
 
         $workflow = new Workflow($definition, new MultipleStateMarkingStore(), $eventDispatcher, 'workflow_name');
@@ -159,7 +159,7 @@ public function testCanDoesNotTriggerGuardEventsForNotEnabledTransitions()
 
         $workflow->can($subject, 't3');
 
-        $this->assertSame(array('workflow_name.guard.t3'), $dispatchedEvents);
+        $this->a
F41A
ssertSame(['workflow_name.guard.t3'], $dispatchedEvents);
     }
 
     /**
@@ -187,7 +187,7 @@ public function testCanWithSameNameTransition()
         $this->assertFalse($workflow->can($subject, 'b_to_c'));
         $this->assertFalse($workflow->can($subject, 'to_a'));
 
-        $subject->marking = array('b' => 1);
+        $subject->marking = ['b' => 1];
         $this->assertFalse($workflow->can($subject, 'a_to_bc'));
         $this->assertTrue($workflow->can($subject, 'b_to_c'));
         $this->assertTrue($workflow->can($subject, 'to_a'));
@@ -244,10 +244,10 @@ public function testApplyWithSameNameTransition()
     public function testApplyWithSameNameTransition2()
     {
         $subject = new \stdClass();
-        $subject->marking = array('a' => 1, 'b' => 1);
+        $subject->marking = ['a' => 1, 'b' => 1];
 
         $places = range('a', 'd');
-        $transitions = array();
+        $transitions = [];
         $transitions[] = new Transition('t', 'a', 'c');
         $transitions[] = new Transition('t', 'b', 'd');
         $definition = new Definition($places, $transitions);
@@ -269,7 +269,7 @@ public function testApplyWithEventDispatcher()
         $eventDispatcher = new EventDispatcherMock();
         $workflow = new Workflow($definition, new MultipleStateMarkingStore(), $eventDispatcher, 'workflow_name');
 
-        $eventNameExpected = array(
+        $eventNameExpected = [
             'workflow.guard',
             'workflow.workflow_name.guard',
             'workflow.workflow_name.guard.t1',
@@ -297,7 +297,7 @@ public function testApplyWithEventDispatcher()
             'workflow.workflow_name.guard',
             'workflow.workflow_name.guard.t2',
             'workflow.workflow_name.announce.t2',
-        );
+        ];
 
         $marking = $workflow->apply($subject, 't1');
 
@@ -317,14 +317,14 @@ public function testEventName()
             $this->assertEquals($name, $event->getWorkflowName());
         };
 
-        $eventNames = array(
+        $eventNames = [
             'workflow.guard',
             'workflow.leave',
             'workflow.transition',
             'workflow.enter',
             'workflow.entered',
             'workflow.announce',
-        );
+        ];
 
         foreach ($eventNames as $eventName) {
             $dispatcher->addListener($eventName, $assertWorkflowName);
@@ -335,20 +335,20 @@ public function testEventName()
 
     public function testMarkingStateOnApplyWithEventDispatcher()
     {
-        $definition = new Definition(range('a', 'f'), array(new Transition('t', range('a', 'c'), range('d', 'f'))));
+        $definition = new Definition(range('a', 'f'), [new Transition('t', range('a', 'c'), range('d', 'f'))]);
 
         $subject = new \stdClass();
-        $subject->marking = array('a' => 1, 'b' => 1, 'c' => 1);
+        $subject->marking = ['a' => 1, 'b' => 1, 'c' => 1];
 
         $dispatcher = new EventDispatcher();
 
         $workflow = new Workflow($definition, new MultipleStateMarkingStore(), $dispatcher, 'test');
 
         $assertInitialState = function (Event $event) {
-            $this->assertEquals(new Marking(array('a' => 1, 'b' => 1, 'c' => 1)), $event->getMarking());
+            $this->assertEquals(new Marking(['a' => 1, 'b' => 1, 'c' => 1]), $event->getMarking());
         };
         $assertTransitionState = function (Event $event) {
-            $this->assertEquals(new Marking(array()), $event->getMarking());
+            $this->assertEquals(new Marking([]), $event->getMarking());
         };
 
         $dispatcher->addListener('workflow.leave', $assertInitialState);
@@ -381,13 +381,13 @@ public function testGetEnabledTransitions()
 
         $this->assertEmpty($workflow->getEnabledTransitions($subject));
 
-        $subject->marking = array('d' => 1);
+        $subject->marking = ['d' => 1];
         $transitions = $workflow->getEnabledTransitions($subject);
         $this->assertCount(2, $transitions);
         $this->assertSame('t3', $transitions[0]->getName());
         $this->assertSame('t4', $transitions[1]->getName());
 
-        $subject->marking = array('c' => 1, 'e' => 1);
+        $subject->marking = ['c' => 1, 'e' => 1];
         $transitions = $workflow->getEnabledTransitions($subject);
         $this->assertCount(1, $transitions);
         $this->assertSame('t5', $transitions[0]->getName());
@@ -404,7 +404,7 @@ public function testGetEnabledTransitionsWithSameNameTransition()
         $this->assertCount(1, $transitions);
         $this->assertSame('a_to_bc', $transitions[0]->getName());
 
-        $subject->marking = array('b' => 1, 'c' => 1);
+        $subject->marking = ['b' => 1, 'c' => 1];
         $transitions = $workflow->getEnabledTransitions($subject);
         $this->assertCount(3, $transitions);
         $this->assertSame('b_to_c', $transitions[0]->getName());
@@ -415,7 +415,7 @@ public function testGetEnabledTransitionsWithSameNameTransition()
 
 class EventDispatcherMock implements \Symfony\Component\EventDispatcher\EventDispatcherInterface
 {
-    public $dispatchedEvents = array();
+    public $dispatchedEvents = [];
 
     public function dispatch($eventName, \Symfony\Component\EventDispatcher\Event $event = null)
     {
diff --git a/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php b/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php
index 4f32ae51205a..7dbe69494051 100644
--- a/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php
+++ b/src/Symfony/Component/Workflow/Validator/StateMachineValidator.php
@@ -21,7 +21,7 @@ class StateMachineValidator implements DefinitionValidatorInterface
 {
     public function validate(Definition $definition, $name)
     {
-        $transitionFromNames = array();
+        $transitionFromNames = [];
         foreach ($definition->getTransitions() as $transition) {
             // Make sure that each transition has exactly one TO
             if (1 !== \count($transition->getTos())) {
diff --git a/src/Symfony/Component/Workflow/Validator/WorkflowValidator.php b/src/Symfony/Component/Workflow/Validator/WorkflowValidator.php
index d271b0dec273..92534dd8a2fa 100644
--- a/src/Symfony/Component/Workflow/Validator/WorkflowValidator.php
+++ b/src/Symfony/Component/Workflow/Validator/WorkflowValidator.php
@@ -32,7 +32,7 @@ public function __construct($singlePlace = false)
     public function validate(Definition $definition, $name)
     {
         // Make sure all transitions for one place has unique name.
-        $places = array_fill_keys($definition->getPlaces(), array());
+        $places = array_fill_keys($definition->getPlaces(), []);
         foreach ($definition->getTransitions() as $transition) {
             foreach ($transition->getFroms() as $from) {
                 if (\in_array($transition->getName(), $places[$from])) {
diff --git a/src/Symfony/Component/Workflow/Workflow.php b/src/Symfony/Component/Workflow/Workflow.php
index d3d18f03746a..a0500b3796bf 100644
--- a/src/Symfony/Component/Workflow/Workflow.php
+++ b/src/Symfony/Component/Workflow/Workflow.php
@@ -172,7 +172,7 @@ public function apply($subject, $transitionName)
      */
     public function getEnabledTransitions($subject)
     {
-        $enabled = array();
+        $enabled = [];
         $marking = $this->getMarking($subject);
 
         foreach ($this->definition->getTransitions() as $transition) {
diff --git a/src/Symfony/Component/Yaml/Command/LintCommand.php b/src/Symfony/Component/Yaml/Command/LintCommand.php
index 36e7e8b97ce1..cc19a5658101 100644
--- a/src/Symfony/Component/Yaml/Command/LintCommand.php
+++ b/src/Symfony/Component/Yaml/Command/LintCommand.php
@@ -91,14 +91,14 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
             }
 
-            return $this->display($io, array($this->validate($stdin, $flags)));
+            return $this->display($io, [$this->validate($stdin, $flags)]);
         }
 
         if (!$this->isReadable($filename)) {
             throw new RuntimeException(sprintf('File or directory "%s" is not readable.', $filename));
         }
 
-        $filesInfo = array();
+        $filesInfo = [];
         foreach ($this->getFiles($filename) as $file) {
             $filesInfo[] = $this->validate(file_get_contents($file), $flags, $file);
         }
@@ -119,12 +119,12 @@ private function validate($content, $flags, $file = null)
         try {
             $this->getParser()->parse($content, Yaml::PARSE_CONSTANT | $flags);
         } catch (ParseException $e) {
-            return array('file' => $file, 'line' => $e->getParsedLine(), 'valid' => false, 'message' => $e->getMessage());
+            return ['file' => $file, 'line' => $e->getParsedLine(), 'valid' => false, 'message' => $e->getMessage()];
         } finally {
             restore_error_handler();
         }
 
-        return array('file' => $file, 'valid' => true);
+        return ['file' => $file, 'valid' => true];
     }
 
     private function display(SymfonyStyle $io, array $files)
@@ -188,7 +188,7 @@ private function getFiles($fileOrDirectory)
         }
 
         foreach ($this->getDirectoryIterator($fileOrDirectory) as $file) {
-            if (!\in_array($file->getExtension(), array('yml', 'yaml'))) {
+            if (!\in_array($file->getExtension(), ['yml', 'yaml'])) {
                 continue;
             }
 
diff --git a/src/Symfony/Component/Yaml/Escaper.php b/src/Symfony/Component/Yaml/Escaper.php
index 2b1321f64cb2..4d3ce244c2ad 100644
--- a/src/Symfony/Component/Yaml/Escaper.php
+++ b/src/Symfony/Component/Yaml/Escaper.php
@@ -28,20 +28,20 @@ class Escaper
     // first to ensure proper escaping because str_replace operates iteratively
     // on the input arrays. This ordering of the characters avoids the use of strtr,
     // which performs more slowly.
-    private static $escapees = array('\\', '\\\\', '\\"', '"',
+    private static $escapees = ['\\', '\\\\', '\\"', '"',
                                      "\x00",  "\x01",  "\x02",  "\x03",  "\x04",  "\x05",  "\x06",  "\x07",
                                      "\x08",  "\x09",  "\x0a",  "\x0b",  "\x0c",  "\x0d",  "\x0e",  "\x0f",
                                      "\x10",  "\x11",  "\x12",  "\x13",  "\x14",  "\x15",  "\x16",  "\x17",
                                      "\x18",  "\x19",  "\x1a",  "\x1b",  "\x1c",  "\x1d",  "\x1e",  "\x1f",
                                      "\xc2\x85", "\xc2\xa0", "\xe2\x80\xa8", "\xe2\x80\xa9",
-                               );
-    private static $escaped = array('\\\\', '\\"', '\\\\', '\\"',
+                               ];
+    private static $escaped = ['\\\\', '\\"', '\\\\', '\\"',
                                      '\\0',   '\\x01', '\\x02', '\\x03', '\\x04', '\\x05', '\\x06', '\\a',
                                      '\\b',   '\\t',   '\\n',   '\\v',   '\\f',   '\\r',   '\\x0e', '\\x0f',
                                      '\\x10', '\\x11', '\\x12', '\\x13', '\\x14', '\\x15', '\\x16', '\\x17',
                                      '\\x18', '\\x19', '\\x1a', '\\e',   '\\x1c', '\\x1d', '\\x1e', '\\x1f',
                                      '\\N', '\\_', '\\L', '\\P',
-                              );
+                              ];
 
     /**
      * Determines if a PHP value would require double quoting in YAML.
@@ -78,7 +78,7 @@ public static function requiresSingleQuoting($value)
     {
         // Determines if a PHP value is entirely composed of a value that would
         // require single quoting in YAML.
-        if (\in_array(strtolower($value), array('null', '~', 'true', 'false', 'y', 'n', 'yes', 'no', 'on', 'off'))) {
+        if (\in_array(strtolower($value), ['null', '~', 'true', 'false', 'y', 'n', 'yes', 'no', 'on', 'off'])) {
             return true;
         }
 
diff --git a/src/Symfony/Component/Yaml/Inline.php b/src/Symfony/Component/Yaml/Inline.php
index 42b6cb10e7b1..67a71d00e333 100644
--- a/src/Symfony/Component/Yaml/Inline.php
+++ b/src/Symfony/Component/Yaml/Inline.php
@@ -63,7 +63,7 @@ public static function initialize($flags, $parsedLineNumber = null, $parsedFilen
      *
      * @throws ParseException
      */
-    public static function parse($value, $flags = 0, $references = array())
+    public static function parse($value, $flags = 0, $references = [])
     {
         if (\is_bool($flags)) {
             @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
@@ -93,7 +93,7 @@ public static function parse($value, $flags = 0, $references = array())
             if (\func_num_args() >= 5) {
                 $references = func_get_arg(4);
             } else {
-                $references = array();
+                $references = [];
             }
         }
 
@@ -285,7 +285,7 @@ private static function dumpArray($value, $flags)
     {
         // array
         if (($value || Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE & $flags) && !self::isHash($value)) {
-            $output = array();
+            $output = [];
             foreach ($value as $val) {
                 $output[] = self::dump($val, $flags);
             }
@@ -294,7 +294,7 @@ private static function dumpArray($value, $flags)
         }
 
         // hash
-        $output = array();
+        $output = [];
         foreach ($value as $key => $val) {
             $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
         }
@@ -318,9 +318,9 @@ private static function dumpArray($value, $flags)
      *
      * @internal
      */
-    public static function parseScalar($scalar, $flags = 0, $delimiters = null, &$i = 0, $evaluate = true, $references = array(), $legacyOmittedKeySupport = false)
+    public static function parseScalar($scalar, $flags = 0, $delimiters = null, &$i = 0, $evaluate = true, $references = [], $legacyOmittedKeySupport = false)
     {
-        if (\in_array($scalar[$i], array('"', "'"))) {
+        if (\in_array($scalar[$i], ['"', "'"])) {
             // quoted scalar
             $output = self::parseQuotedScalar($scalar, $i);
 
@@ -409,9 +409,9 @@ private static function parseQuotedScalar($scalar, &$i)
      *
      * @throws ParseException When malformed inline YAML string is parsed
      */
-    private static function parseSequence($sequence, $flags, &$i = 0, $references = array())
+    private static function parseSequence($sequence, $flags, &$i = 0, $references = [])
     {
-        $output = array();
+        $output = [];
         $len = \strlen($sequence);
         ++$i;
 
@@ -437,8 +437,8 @@ private static function parseSequence($sequence, $flags, &$i = 0, $references =
                     $value = self::parseMapping($sequence, $flags, $i, $references);
                     break;
                 default:
-                    $isQuoted = \in_array($sequence[$i], array('"', "'"));
-                    $value = self::parseScalar($sequence, $flags, array(',', ']'), $i, null === $tag, $references);
+                    $isQuoted = \in_array($sequence[$i], ['"', "'"]);
+                    $value = self::parseScalar($sequence, $flags, [',', ']'], $i, null === $tag, $references);
 
                     // the value can be an array if a reference has been resolved to an array var
                     if (\is_string($value) && !$isQuoted && false !== strpos($value, ': ')) {
@@ -478,9 +478,9 @@ private static function parseSequence($sequence, $flags, &$i = 0, $references =
      *
      * @throws ParseException When malformed inline YAML string is parsed
      */
-    private static function parseMapping($mapping, $flags, &$i = 0, $references = array())
+    private static function parseMapping($mapping, $flags, &$i = 0, $references = [])
     {
-        $output = array();
+        $output = [];
         $len = \strlen($mapping);
         ++$i;
         $allowOverwrite = false;
@@ -501,8 +501,8 @@ private static function parseMapping($mapping, $flags, &$i = 0, $references = ar
             }
 
             // key
-            $isKeyQuoted = \in_array($mapping[$i], array('"', "'"), true);
-            $key = self::parseScalar($mapping, $flags, array(':', ' '), $i, false, array(), true);
+            $isKeyQuoted = \in_array($mapping[$i], ['"', "'"], true);
+            $key = self::parseScalar($mapping, $flags, [':', ' '], $i, false, [], true);
 
             if (':' !== $key && false === $i = strpos($mapping, ':', $i)) {
                 break;
@@ -520,7 +520,7 @@ private static function parseMapping($mapping, $flags, &$i = 0, $references = ar
                 }
             }
 
-            if (':' !== $key && !$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], array(' ', ',', '[', ']', '{', '}'), true))) {
+            if (':' !== $key && !$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], [' ', ',', '[', ']', '{', '}'], true))) {
                 @trigger_error(self::getDeprecationMessage('Using a colon after an unquoted mapping key that is not followed by an indication character (i.e. " ", ",", "[", "]", "{", "}") is deprecated since Symfony 3.2 and will throw a ParseException in 4.0.'), E_USER_DEPRECATED);
             }
 
@@ -578,7 +578,7 @@ private static function parseMapping($mapping, $flags, &$i = 0, $references = ar
                         }
                         break;
                     default:
-                        $value = self::parseScalar($mapping, $flags, array(',', '}'), $i, null === $tag, $references);
+                        $value = self::parseScalar($mapping, $flags, [',', '}'], $i, null === $tag, $references);
                         // Spec: Keys MUST be unique; first one wins.
                         // Parser cannot abort this mapping earlier, since lines
                         // are processed sequentially.
@@ -616,7 +616,7 @@ private static function parseMapping($mapping, $flags, &$i = 0, $references = ar
      *
      * @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
      */
-    private static function evaluateScalar($scalar, $flags, $references = array())
+    private static function evaluateScalar($scalar, $flags, $references = [])
     {
         $scalar = trim($scalar);
         $scalarLower = strtolower($scalar);
@@ -766,7 +766,7 @@ private static function evaluateScalar($scalar, $flags, $references = array())
                             @trigger_error(self::getDeprecationMessage('Using the comma as a group separator for floats is deprecated since Symfony 3.2 and will be removed in 4.0.'), E_USER_DEPRECATED);
                         }
 
-                        return (float) str_replace(array(',', '_'), '', $scalar);
+                        return (float) str_replace([',', '_'], '', $scalar);
                     case Parser::preg_match(self::getTimestampRegex(), $scalar):
                         if (Yaml::PARSE_DATETIME & $flags) {
                             // When no timezone is provided in the parsed date, YAML spec says we must assume UTC.
@@ -805,7 +805,7 @@ private static function parseTag($value, &$i, $flags)
         $nextOffset += strspn($value, ' ', $nextOffset);
 
         // Is followed by a scalar
-        if ((!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], array('[', '{'), true)) && 'tagged' !== $tag) {
+        if ((!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], ['[', '{'], true)) && 'tagged' !== $tag) {
             // Manage non-whitelisted scalars in {@link self::evaluateScalar()}
             return;
         }
diff --git a/src/Symfony/Component/Yaml/Parser.php b/src/Symfony/Component/Yaml/Parser.php
index 8b3b6992e511..d40fde55f0aa 100644
--- a/src/Symfony/Component/Yaml/Parser.php
+++ b/src/Symfony/Component/Yaml/Parser.php
@@ -29,13 +29,13 @@ class Parser
     private $filename;
     private $offset = 0;
     private $totalNumberOfLines;
-    private $lines = array();
+    private $lines = [];
     private $currentLineNb = -1;
     private $currentLine = '';
-    private $refs = array();
-    private $skippedLineNumbers = array();
-    private $locallySkippedLineNumbers = array();
-    private $refsBeingParsed = array();
+    private $refs = [];
+    private $skippedLineNumbers = [];
+    private $locallySkippedLineNumbers = [];
+    private $refsBeingParsed = [];
 
     public function __construct()
     {
@@ -127,7 +127,7 @@ public function parse($value, $flags = 0)
             throw new ParseException('The YAML value does not appear to be valid UTF-8.', -1, null, $this->filename);
         }
 
-        $this->refs = array();
+        $this->refs = [];
 
         $mbEncoding = null;
         $e = null;
@@ -148,11 +148,11 @@ public function parse($value, $flags = 0)
             mb_internal_encoding($mbEncoding);
         }
 
-        $this->lines = array();
+        $this->lines = [];
         $this->currentLine = '';
-        $this->refs = array();
-        $this->skippedLineNumbers = array();
-        $this->locallySkippedLineNumbers = array();
+        $this->refs = [];
+        $this->skippedLineNumbers = [];
+        $this->locallySkippedLineNumbers = [];
 
         if (null !== $e) {
             throw $e;
@@ -167,7 +167,7 @@ private function doParse($value, $flags)
         $this->currentLine = '';
         $value = $this->cleanup($value);
         $this->lines = explode("\n", $value);
-        $this->locallySkippedLineNumbers = array();
+        $this->locallySkippedLineNumbers = [];
 
         if (null === $this->totalNumberOfLines) {
             $this->totalNumberOfLines = \count($this->lines);
@@ -177,7 +177,7 @@ private function doParse($value, $flags)
             return null;
         }
 
-        $data = array();
+        $data = [];
         $context = null;
         $allowOverwrite = false;
 
@@ -250,7 +250,7 @@ private function doParse($value, $flags)
                 }
             } elseif (
                 self::preg_match('#^(?P<key>(?:![^\s]++\s++)?(?:'.Inline::REGEX_QUOTED_STRING.'|(?:!?!php/const:)?[^ \'"\[\{!].*?)) *\:(\s++(?P<value>.+))?$#u', rtrim($this->currentLine), $values)
-                && (false === strpos($values['key'], ' #') || \in_array($values['key'][0], array('"', "'")))
+                && (false === strpos($values['key'], ' #') || \in_array($values['key'][0], ['"', "'"]))
             ) {
                 if ($context && 'sequence' == $context) {
                     throw new ParseException('You cannot define a mapping item when in a sequence', $this->currentLineNb + 1, $this->currentLine, $this->filename);
@@ -596,7 +596,7 @@ private function getNextEmbedBlock($indentation = null, $inSequence = false)
             $newIndent = $indentation;
         }
 
-        $data = array();
+        $data = [];
         if ($this->getCurrentLineIndentation() >= $newIndent) {
             $data[] = substr($this->currentLine, $newIndent);
         } elseif ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) {
@@ -735,7 +735,7 @@ private function parseValue($value, $flags, $context)
                 return Inline::parse($value, $flags, $this->refs);
             }
 
-            $lines = array();
+            $lines = [];
 
             while ($this->moveToNextLine()) {
                 // unquoted strings end before the first unindented line
@@ -800,7 +800,7 @@ private function parseBlockScalar($style, $chomping = '', $indentation = 0)
         }
 
         $isCurrentLineBlank = $this->isCurrentLineBlank();
-        $blockLines = array();
+        $blockLines = [];
 
         // leading blank lines are consumed before determining indentation
         while ($notEOF && $isCurrentLineBlank) {
@@ -972,7 +972,7 @@ private function isCurrentLineLastLineInDocument()
      */
     private function cleanup($value)
     {
-        $value = str_replace(array("\r\n", "\r"), "\n", $value);
+        $value = str_replace(["\r\n", "\r"], "\n", $value);
 
         // strip YAML header
         $count = 0;
diff --git a/src/Symfony/Component/Yaml/Tests/Command/LintCommandTest.php b/src/Symfony/Component/Yaml/Tests/Command/LintCommandTest.php
index a5baf234ef3d..2bf0286b6e38 100644
--- a/src/Symfony/Component/Yaml/Tests/Command/LintCommandTest.php
+++ b/src/Symfony/Component/Yaml/Tests/Command/LintCommandTest.php
@@ -31,7 +31,7 @@ public function testLintCorrectFile()
         $tester = $this->createCommandTester();
         $filename = $this->createFile('foo: bar');
 
-        $ret = $tester->execute(array('filename' => $filename), array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false));
+        $ret = $tester->execute(['filename' => $filename], ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertRegExp('/^\/\/ OK in /', trim($tester->getDisplay()));
@@ -45,7 +45,7 @@ public function testLintIncorrectFile()
         $tester = $this->createCommandTester();
         $filename = $this->createFile($incorrectContent);
 
-        $ret = $tester->execute(array('filename' => $filename), array('decorated' => false));
+        $ret = $tester->execute(['filename' => $filename], ['decorated' => false]);
 
         $this->assertEquals(1, $ret, 'Returns 1 in case of error');
         $this->assertContains('Unable to parse at line 3 (near "bar").', trim($tester->getDisplay()));
@@ -56,7 +56,7 @@ public function testConstantAsKey()
         $yaml = <<<YAML
 !php/const 'Symfony\Component\Yaml\Tests\Command\Foo::TEST': bar
 YAML;
-        $ret = $this->createCommandTester()->execute(array('filename' => $this->createFile($yaml)), array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false));
+        $ret = $this->createCommandTester()->execute(['filename' => $this->createFile($yaml)], ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]);
         $this->assertSame(0, $ret, 'lint:yaml exits with code 0 in case of success');
     }
 
@@ -65,7 +65,7 @@ public function testCustomTags()
         $yaml = <<<YAML
 foo: !my_tag {foo: bar}
 YAML;
-        $ret = $this->createCommandTester()->execute(array('filename' => $this->createFile($yaml), '--parse-tags' => true), array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false));
+        $ret = $this->createCommandTester()->execute(['filename' => $this->createFile($yaml), '--parse-tags' => true], ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]);
         $this->assertSame(0, $ret, 'lint:yaml exits with code 0 in case of success');
     }
 
@@ -74,7 +74,7 @@ public function testCustomTagsError()
         $yaml = <<<YAML
 foo: !my_tag {foo: bar}
 YAML;
-        $ret = $this->createCommandTester()->execute(array('filename' => $this->createFile($yaml)), array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false));
+        $ret = $this->createCommandTester()->execute(['filename' => $this->createFile($yaml)], ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]);
         $this->assertSame(1, $ret, 'lint:yaml exits with code 1 in case of error');
     }
 
@@ -87,7 +87,7 @@ public function testLintFileNotReadable()
         $filename = $this->createFile('');
         unlink($filename);
 
-        $ret = $tester->execute(array('filename' => $filename), array('decorated' => false));
+        $ret = $tester->execute(['filename' => $filename], ['decorated' => false]);
     }
 
     /**
@@ -117,7 +117,7 @@ protected function createCommandTester()
 
     protected function setUp()
     {
-        $this->files = array();
+        $this->files = [];
         @mkdir(sys_get_temp_dir().'/framework-yml-lint-test');
     }
 
diff --git a/src/Symfony/Component/Yaml/Tests/DumperTest.php b/src/Symfony/Component/Yaml/Tests/DumperTest.php
index d84a14089be7..e7a763ab9692 100644
--- a/src/Symfony/Component/Yaml/Tests/DumperTest.php
+++ b/src/Symfony/Component/Yaml/Tests/DumperTest.php
@@ -22,20 +22,20 @@ class DumperTest extends TestCase
     protected $dumper;
     protected $path;
 
-    protected $array = array(
+    protected $array = [
         '' => 'bar',
         'foo' => '#bar',
-        'foo\'bar' => array(),
-        'bar' => array(1, 'foo'),
-        'foobar' => array(
+        'foo\'bar' => [],
+        'bar' => [1, 'foo'],
+        'foobar' => [
             'foo' => 'bar',
-            'bar' => array(1, 'foo'),
-            'foobar' => array(
+            'bar' => [1, 'foo'],
+            'foobar' => [
                 'foo' => 'bar',
-                'bar' => array(1, 'foo'),
-            ),
-        ),
-    );
+                'bar' => [1, 'foo'],
+            ],
+        ],
+    ];
 
     protected function setUp()
     {
@@ -208,7 +208,7 @@ public function testInlineLevel()
 
     public function testObjectSupportEnabled()
     {
-        $dump = $this->dumper->dump(array('foo' => new A(), 'bar' => 1), 0, 0, Yaml::DUMP_OBJECT);
+        $dump = $this->dumper->dump(['foo' => new A(), 'bar' => 1], 0, 0, Yaml::DUMP_OBJECT);
 
         $this->assertEquals('{ foo: !php/object \'O:30:"Symfony\Component\Yaml\Tests\A":1:{s:1:"a";s:3:"foo";}\', bar: 1 }', $dump, '->dump() is able to dump objects');
     }
@@ -218,14 +218,14 @@ public function testObjectSupportEnabled()
      */
     public function testObjectSupportEnabledPassingTrue()
     {
-        $dump = $this->dumper->dump(array('foo' => new A(), 'bar' => 1), 0, 0, false, true);
+        $dump = $this->dumper->dump(['foo' => new A(), 'bar' => 1], 0, 0, false, true);
 
         $this->assertEquals('{ foo: !php/object \'O:30:"Symfony\Component\Yaml\Tests\A":1:{s:1:"a";s:3:"foo";}\', bar: 1 }', $dump, '->dump() is able to dump objects');
     }
 
     public function testObjectSupportDisabledButNoExceptions()
     {
-        $dump = $this->dumper->dump(array('foo' => new A(), 'bar' => 1));
+        $dump = $this->dumper->dump(['foo' => new A(), 'bar' => 1]);
 
         $this->assertEquals('{ foo: null, bar: 1 }', $dump, '->dump() does not dump objects when disabled');
     }
@@ -235,7 +235,7 @@ public function testObjectSupportDisabledButNoExceptions()
      */
     public function testObjectSupportDisabledWithExceptions()
     {
-        $this->dumper->dump(array('foo' => new A(), 'bar' => 1), 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE);
+        $this->dumper->dump(['foo' => new A(), 'bar' => 1], 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE);
     }
 
     /**
@@ -244,18 +244,18 @@ public function testObjectSupportDisabledWithExceptions()
      */
     public function testObjectSupportDisabledWithExceptionsPassingTrue()
     {
-        $this->dumper->dump(array('foo' => new A(), 'bar' => 1), 0, 0, true);
+        $this->dumper->dump(['foo' => new A(), 'bar' => 1], 0, 0, true);
     }
 
     public function testEmptyArray()
     {
-        $dump = $this->dumper->dump(array());
+        $dump = $this->dumper->dump([]);
         $this->assertEquals('{  }', $dump);
 
-        $dump = $this->dumper->dump(array(), 0, 0, Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
+        $dump = $this->dumper->dump([], 0, 0, Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
         $this->assertEquals('[]', $dump);
 
-        $dump = $this->dumper->dump(array(), 9, 0, Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
+        $dump = $this->dumper->dump([], 9, 0, Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
         $this->assertEquals('[]', $dump);
 
         $dump = $this->dumper->dump(new \ArrayObject(), 0, 0, Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE | Yaml::DUMP_OBJECT_AS_MAP);
@@ -275,27 +275,27 @@ public function testEscapedEscapeSequencesInQuotedScalar($input, $expected)
 
     public function getEscapeSequences()
     {
-        return array(
-            'empty string' => array('', "''"),
-            'null' => array("\x0", '"\\0"'),
-            'bell' => array("\x7", '"\\a"'),
-            'backspace' => array("\x8", '"\\b"'),
-            'horizontal-tab' => array("\t", '"\\t"'),
-            'line-feed' => array("\n", '"\\n"'),
-            'vertical-tab' => array("\v", '"\\v"'),
-            'form-feed' => array("\xC", '"\\f"'),
-            'carriage-return' => array("\r", '"\\r"'),
-            'escape' => array("\x1B", '"\\e"'),
-            'space' => array(' ', "' '"),
-            'double-quote' => array('"', "'\"'"),
-            'slash' => array('/', '/'),
-            'backslash' => array('\\', '\\'),
-            'next-line' => array("\xC2\x85", '"\\N"'),
-            'non-breaking-space' => array("\xc2\xa0", '"\\_"'),
-            'line-separator' => array("\xE2\x80\xA8", '"\\L"'),
-            'paragraph-separator' => array("\xE2\x80\xA9", '"\\P"'),
-            'colon' => array(':', "':'"),
-        );
+        return [
+            'empty string' => ['', "''"],
+            'null' => ["\x0", '"\\0"'],
+            'bell' => ["\x7", '"\\a"'],
+            'backspace' => ["\x8", '"\\b"'],
+            'horizontal-tab' => ["\t", '"\\t"'],
+            'line-feed' => ["\n", '"\\n"'],
+            'vertical-tab' => ["\v", '"\\v"'],
+            'form-feed' => ["\xC", '"\\f"'],
+            'carriage-return' => ["\r", '"\\r"'],
+            'escape' => ["\x1B", '"\\e"'],
+            'space' => [' ', "' '"],
+            'double-quote' => ['"', "'\"'"],
+            'slash' => ['/', '/'],
+            'backslash' => ['\\', '\\'],
+            'next-line' => ["\xC2\x85", '"\\N"'],
+            'non-breaking-space' => ["\xc2\xa0", '"\\_"'],
+            'line-separator' => ["\xE2\x80\xA8", '"\\L"'],
+            'paragraph-separator' => ["\xE2\x80\xA9", '"\\P"'],
+            'colon' => [':', "':'"],
+        ];
     }
 
     public function testBinaryDataIsDumpedBase64Encoded()
@@ -303,7 +303,7 @@ public function testBinaryDataIsDumpedBase64Encoded()
         $binaryData = file_get_contents(__DIR__.'/Fixtures/arrow.gif');
         $expected = '{ data: !!binary '.base64_encode($binaryData).' }';
 
-        $this->assertSame($expected, $this->dumper->dump(array('data' => $binaryData)));
+        $this->assertSame($expected, $this->dumper->dump(['data' => $binaryData]));
     }
 
     public function testNonUtf8DataIsDumpedBase64Encoded()
@@ -324,18 +324,18 @@ public function testDumpObjectAsMap($object, $expected)
 
     public function objectAsMapProvider()
     {
-        $tests = array();
+        $tests = [];
 
         $bar = new \stdClass();
         $bar->class = 'classBar';
-        $bar->args = array('bar');
+        $bar->args = ['bar'];
         $zar = new \stdClass();
         $foo = new \stdClass();
         $foo->bar = $bar;
         $foo->zar = $zar;
         $object = new \stdClass();
         $object->foo = $foo;
-        $tests['stdClass'] = array($object, $object);
+        $tests['stdClass'] = [$object, $object];
 
         $arrayObject = new \ArrayObject();
         $arrayObject['foo'] = 'bar';
@@ -343,19 +343,19 @@ public function objectAsMapProvider()
         $parsedArrayObject = new \stdClass();
         $parsedArrayObject->foo = 'bar';
         $parsedArrayObject->baz = 'foobar';
-        $tests['ArrayObject'] = array($arrayObject, $parsedArrayObject);
+        $tests['ArrayObject'] = [$arrayObject, $parsedArrayObject];
 
         $a = new A();
-        $tests['arbitrary-object'] = array($a, null);
+        $tests['arbitrary-object'] = [$a, null];
 
         return $tests;
     }
 
     public function testDumpingArrayObjectInstancesRespectsInlineLevel()
     {
-        $deep = new \ArrayObject(array('deep1' => 'd', 'deep2' => 'e'));
-        $inner = new \ArrayObject(array('inner1' => 'b', 'inner2' => 'c', 'inner3' => $deep));
-        $outer = new \ArrayObject(array('outer1' => 'a', 'outer2' => $inner));
+        $deep = new \ArrayObject(['deep1' => 'd', 'deep2' => 'e']);
+        $inner = new \ArrayObject(['inner1' => 'b', 'inner2' => 'c', 'inner3' => $deep]);
+        $outer = new \ArrayObject(['outer1' => 'a', 'outer2' => $inner]);
 
         $yaml = $this->dumper->dump($outer, 2, 0, Yaml::DUMP_OBJECT_AS_MAP);
 
@@ -372,9 +372,9 @@ public function testDumpingArrayObjectInstancesRespectsInlineLevel()
 
     public function testDumpingArrayObjectInstancesWithNumericKeysInlined()
     {
-        $deep = new \ArrayObject(array('d', 'e'));
-        $inner = new \ArrayObject(array('b', 'c', $deep));
-        $outer = new \ArrayObject(array('a', $inner));
+        $deep = new \ArrayObject(['d', 'e']);
+        $inner = new \ArrayObject(['b', 'c', $deep]);
+        $outer = new \ArrayObject(['a', $inner]);
 
         $yaml = $this->dumper->dump($outer, 0, 0, Yaml::DUMP_OBJECT_AS_MAP);
         $expected = <<<YAML
@@ -385,9 +385,9 @@ public function testDumpingArrayObjectInstancesWithNumericKeysInlined()
 
     public function testDumpingArrayObjectInstancesWithNumericKeysRespectsInlineLevel()
     {
-        $deep = new \ArrayObject(array('d', 'e'));
-        $inner = new \ArrayObject(array('b', 'c', $deep));
-        $outer = new \ArrayObject(array('a', $inner));
+        $deep = new \ArrayObject(['d', 'e']);
+        $inner = new \ArrayObject(['b', 'c', $deep]);
+        $outer = new \ArrayObject(['a', $inner]);
         $yaml = $this->dumper->dump($outer, 2, 0, Yaml::DUMP_OBJECT_AS_MAP);
         $expected = <<<YAML
 0: a
@@ -440,34 +440,34 @@ public function testDumpingStdClassInstancesRespectsInlineLevel()
 
     public function testDumpMultiLineStringAsScalarBlock()
     {
-        $data = array(
-            'data' => array(
+        $data = [
+            'data' => [
                 'single_line' => 'foo bar baz',
                 'multi_line' => "foo\nline with trailing spaces:\n  \nbar\ninteger like line:\n123456789\nempty line:\n\nbaz",
                 'multi_line_with_carriage_return' => "foo\nbar\r\nbaz",
-                'nested_inlined_multi_line_string' => array(
+                'nested_inlined_multi_line_string' => [
                     'inlined_multi_line' => "foo\nbar\r\nempty line:\n\nbaz",
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
         $this->assertSame(file_get_contents(__DIR__.'/Fixtures/multiple_lines_as_literal_block.yml'), $this->dumper->dump($data, 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
     }
 
     public function testDumpMultiLineStringAsScalarBlockWhenFirstLineHasLeadingSpace()
     {
-        $data = array(
-            'data' => array(
+        $data = [
+            'data' => [
                 'multi_line' => "    the first line has leading spaces\nThe second line does not.",
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame(file_get_contents(__DIR__.'/Fixtures/multiple_lines_as_literal_block_leading_space_in_first_line.yml'), $this->dumper->dump($data, 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
     }
 
     public function testCarriageReturnIsMaintainedWhenDumpingAsMultiLineLiteralBlock()
     {
-        $this->assertSame("- \"a\\r\\nb\\nc\"\n", $this->dumper->dump(array("a\r\nb\nc"), 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
+        $this->assertSame("- \"a\\r\\nb\\nc\"\n", $this->dumper->dump(["a\r\nb\nc"], 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
     }
 
     /**
diff --git a/src/Symfony/Component/Yaml/Tests/InlineTest.php b/src/Symfony/Component/Yaml/Tests/InlineTest.php
index f2c4ab608470..950c702300eb 100644
--- a/src/Symfony/Component/Yaml/Tests/InlineTest.php
+++ b/src/Symfony/Component/Yaml/Tests/InlineTest.php
@@ -53,13 +53,13 @@ public function testParsePhpConstants($yaml, $value)
 
     public function getTestsForParsePhpConstants()
     {
-        return array(
-            array('!php/const Symfony\Component\Yaml\Yaml::PARSE_CONSTANT', Yaml::PARSE_CONSTANT),
-            array('!php/const PHP_INT_MAX', PHP_INT_MAX),
-            array('[!php/const PHP_INT_MAX]', array(PHP_INT_MAX)),
-            array('{ foo: !php/const PHP_INT_MAX }', array('foo' => PHP_INT_MAX)),
-            array('!php/const NULL', null),
-        );
+        return [
+            ['!php/const Symfony\Component\Yaml\Yaml::PARSE_CONSTANT', Yaml::PARSE_CONSTANT],
+            ['!php/const PHP_INT_MAX', PHP_INT_MAX],
+            ['[!php/const PHP_INT_MAX]', [PHP_INT_MAX]],
+            ['{ foo: !php/const PHP_INT_MAX }', ['foo' => PHP_INT_MAX]],
+            ['!php/const NULL', null],
+        ];
     }
 
     /**
@@ -92,13 +92,13 @@ public function testDeprecatedConstantTag($yaml, $expectedValue)
 
     public function getTestsForParseLegacyPhpConstants()
     {
-        return array(
-            array('!php/const:Symfony\Component\Yaml\Yaml::PARSE_CONSTANT', Yaml::PARSE_CONSTANT),
-            array('!php/const:PHP_INT_MAX', PHP_INT_MAX),
-            array('[!php/const:PHP_INT_MAX]', array(PHP_INT_MAX)),
-            array('{ foo: !php/const:PHP_INT_MAX }', array('foo' => PHP_INT_MAX)),
-            array('!php/const:NULL', null),
-        );
+        return [
+            ['!php/const:Symfony\Component\Yaml\Yaml::PARSE_CONSTANT', Yaml::PARSE_CONSTANT],
+            ['!php/const:PHP_INT_MAX', PHP_INT_MAX],
+            ['[!php/const:PHP_INT_MAX]', [PHP_INT_MAX]],
+            ['{ foo: !php/const:PHP_INT_MAX }', ['foo' => PHP_INT_MAX]],
+            ['!php/const:NULL', null],
+        ];
     }
 
     /**
@@ -130,7 +130,7 @@ public function testDumpNumericValueWithLocale()
         }
 
         try {
-            $requiredLocales = array('fr_FR.UTF-8', 'fr_FR.UTF8', 'fr_FR.utf-8', 'fr_FR.utf8', 'French_France.1252');
+            $requiredLocales = ['fr_FR.UTF-8', 'fr_FR.UTF8', 'fr_FR.utf-8', 'fr_FR.utf8', 'French_France.1252'];
             if (false === setlocale(LC_NUMERIC, $requiredLocales)) {
                 $this->markTestSkipped('Could not set any of required locales: '.implode(', ', $requiredLocales));
             }
@@ -232,7 +232,7 @@ public function testParseScalarWithCorrectlyQuotedStringShouldReturnString()
      */
     public function testParseReferences($yaml, $expected)
     {
-        $this->assertSame($expected, Inline::parse($yaml, 0, array('var' => 'var-value')));
+        $this->assertSame($expected, Inline::parse($yaml, 0, ['var' => 'var-value']));
     }
 
     /**
@@ -241,31 +241,31 @@ public function testParseReferences($yaml, $expected)
      */
     public function testParseReferencesAsFifthArgument($yaml, $expected)
     {
-        $this->assertSame($expected, Inline::parse($yaml, false, false, false, array('var' => 'var-value')));
+        $this->assertSame($expected, Inline::parse($yaml, false, false, false, ['var' => 'var-value']));
     }
 
     public function getDataForParseReferences()
     {
-        return array(
-            'scalar' => array('*var', 'var-value'),
-            'list' => array('[ *var ]', array('var-value')),
-            'list-in-list' => array('[[ *var ]]', array(array('var-value'))),
-            'map-in-list' => array('[ { key: *var } ]', array(array('key' => 'var-value'))),
-            'embedded-mapping-in-list' => array('[ key: *var ]', array(array('key' => 'var-value'))),
-            'map' => array('{ key: *var }', array('key' => 'var-value')),
-            'list-in-map' => array('{ key: [*var] }', array('key' => array('var-value'))),
-            'map-in-map' => array('{ foo: { bar: *var } }', array('foo' => array('bar' => 'var-value'))),
-        );
+        return [
+            'scalar' => ['*var', 'var-value'],
+            'list' => ['[ *var ]', ['var-value']],
+            'list-in-list' => ['[[ *var ]]', [['var-value']]],
+            'map-in-list' => ['[ { key: *var } ]', [['key' => 'var-value']]],
+            'embedded-mapping-in-list' => ['[ key: *var ]', [['key' => 'var-value']]],
+            'map' => ['{ key: *var }', ['key' => 'var-value']],
+            'list-in-map' => ['{ key: [*var] }', ['key' => ['var-value']]],
+            'map-in-map' => ['{ foo: { bar: *var } }', ['foo' => ['bar' => 'var-value']]],
+        ];
     }
 
     public function testParseMapReferenceInSequence()
     {
-        $foo = array(
+        $foo = [
             'a' => 'Steve',
             'b' => 'Clark',
             'c' => 'Brian',
-        );
-        $this->assertSame(array($foo), Inline::parse('[*foo]', 0, array('foo' => $foo)));
+        ];
+        $this->assertSame([$foo], Inline::parse('[*foo]', 0, ['foo' => $foo]));
     }
 
     /**
@@ -273,12 +273,12 @@ public function testParseMapReferenceInSequence()
      */
     public function testParseMapReferenceInSequenceAsFifthArgument()
     {
-        $foo = array(
+        $foo = [
             'a' => 'Steve',
             'b' => 'Clark',
             'c' => 'Brian',
-        );
-        $this->assertSame(array($foo), Inline::parse('[*foo]', false, false, false, array('foo' => $foo)));
+        ];
+        $this->assertSame([$foo], Inline::parse('[*foo]', false, false, false, ['foo' => $foo]));
     }
 
     /**
@@ -316,7 +316,7 @@ public function testParseUnquotedScalarStartingWithReservedIndicator($indicator)
 
     public function getReservedIndicators()
     {
-        return array(array('@'), array('`'));
+        return [['@'], ['`']];
     }
 
     /**
@@ -336,7 +336,7 @@ public function testParseUnquotedScalarStartingWithScalarIndicator($indicator)
 
     public function getScalarIndicators()
     {
-        return array(array('|'), array('>'));
+        return [['|'], ['>']];
     }
 
     /**
@@ -359,240 +359,240 @@ public function testIsHash($array, $expected)
 
     public function getDataForIsHash()
     {
-        return array(
-            array(array(), false),
-            array(array(1, 2, 3), false),
-            array(array(2 => 1, 1 => 2, 0 => 3), true),
-            array(array('foo' => 1, 'bar' => 2), true),
-        );
+        return [
+            [[], false],
+            [[1, 2, 3], false],
+            [[2 => 1, 1 => 2, 0 => 3], true],
+            [['foo' => 1, 'bar' => 2], true],
+        ];
     }
 
     public function getTestsForParse()
     {
-        return array(
-            array('', ''),
-            array('null', null),
-            array('false', false),
-            array('true', true),
-            array('12', 12),
-            array('-12', -12),
-            array('1_2', 12),
-            array('_12', '_12'),
-            array('12_', 12),
-            array('"quoted string"', 'quoted string'),
-            array("'quoted string'", 'quoted string'),
-            array('12.30e+02', 12.30e+02),
-            array('123.45_67', 123.4567),
-            array('0x4D2', 0x4D2),
-            array('0x_4_D_2_', 0x4D2),
-            array('02333', 02333),
-            array('0_2_3_3_3', 02333),
-            array('.Inf', -log(0)),
-            array('-.Inf', log(0)),
-            array("'686e444'", '686e444'),
-            array('686e444', 646e444),
-            array('123456789123456789123456789123456789', '123456789123456789123456789123456789'),
-            array('"foo\r\nbar"', "foo\r\nbar"),
-            array("'foo#bar'", 'foo#bar'),
-            array("'foo # bar'", 'foo # bar'),
-            array("'#cfcfcf'", '#cfcfcf'),
-            array('::form_base.html.twig', '::form_base.html.twig'),
+        return [
+            ['', ''],
+            ['null', null],
+            ['false', false],
+            ['true', true],
+            ['12', 12],
+            ['-12', -12],
+            ['1_2', 12],
+            ['_12', '_12'],
+            ['12_', 12],
+            ['"quoted string"', 'quoted string'],
+            ["'quoted string'", 'quoted string'],
+            ['12.30e+02', 12.30e+02],
+            ['123.45_67', 123.4567],
+            ['0x4D2', 0x4D2],
+            ['0x_4_D_2_', 0x4D2],
+            ['02333', 02333],
+            ['0_2_3_3_3', 02333],
+            ['.Inf', -log(0)],
+            ['-.Inf', log(0)],
+            ["'686e444'", '686e444'],
+            ['686e444', 646e444],
+            ['123456789123456789123456789123456789', '123456789123456789123456789123456789'],
+            ['"foo\r\nbar"', "foo\r\nbar"],
+            ["'foo#bar'", 'foo#bar'],
+            ["'foo # bar'", 'foo # bar'],
+            ["'#cfcfcf'", '#cfcfcf'],
+            ['::form_base.html.twig', '::form_base.html.twig'],
 
             // Pre-YAML-1.2 booleans
-            array("'y'", 'y'),
-            array("'n'", 'n'),
-            array("'yes'", 'yes'),
-            array("'no'", 'no'),
-            array("'on'", 'on'),
-            array("'off'", 'off'),
-
-            array('2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)),
-            array('2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)),
-            array('2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)),
-            array('1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)),
-            array('1730-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 1730)),
-
-            array('"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''),
-            array("'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''),
+            ["'y'", 'y'],
+            ["'n'", 'n'],
+            ["'yes'", 'yes'],
+            ["'no'", 'no'],
+            ["'on'", 'on'],
+            ["'off'", 'off'],
+
+            ['2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)],
+            ['2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)],
+            ['2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)],
+            ['1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)],
+            ['1730-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 1730)],
+
+            ['"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''],
+            ["'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''],
 
             // sequences
             // urls are no key value mapping. see #3609. Valid yaml "key: value" mappings require a space after the colon
-            array('[foo, http://urls.are/no/mappings, false, null, 12]', array('foo', 'http://urls.are/no/mappings', false, null, 12)),
-            array('[  foo  ,   bar , false  ,  null     ,  12  ]', array('foo', 'bar', false, null, 12)),
-            array('[\'foo,bar\', \'foo bar\']', array('foo,bar', 'foo bar')),
+            ['[foo, http://urls.are/no/mappings, false, null, 12]', ['foo', 'http://urls.are/no/mappings', false, null, 12]],
+            ['[  foo  ,   bar , false  ,  null     ,  12  ]', ['foo', 'bar', false, null, 12]],
+            ['[\'foo,bar\', \'foo bar\']', ['foo,bar', 'foo bar']],
 
             // mappings
-            array('{foo: bar,bar: foo,"false": false, "null": null,integer: 12}', array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12)),
-            array('{ foo  : bar, bar : foo, "false"  :   false,  "null"  :   null,  integer :  12  }', array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12)),
-            array('{foo: \'bar\', bar: \'foo: bar\'}', array('foo' => 'bar', 'bar' => 'foo: bar')),
-            array('{\'foo\': \'bar\', "bar": \'foo: bar\'}', array('foo' => 'bar', 'bar' => 'foo: bar')),
-            array('{\'foo\'\'\': \'bar\', "bar\"": \'foo: bar\'}', array('foo\'' => 'bar', 'bar"' => 'foo: bar')),
-            array('{\'foo: \': \'bar\', "bar: ": \'foo: bar\'}', array('foo: ' => 'bar', 'bar: ' => 'foo: bar')),
-            array('{"foo:bar": "baz"}', array('foo:bar' => 'baz')),
-            array('{"foo":"bar"}', array('foo' => 'bar')),
+            ['{foo: bar,bar: foo,"false": false, "null": null,integer: 12}', ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12]],
+            ['{ foo  : bar, bar : foo, "false"  :   false,  "null"  :   null,  integer :  12  }', ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12]],
+            ['{foo: \'bar\', bar: \'foo: bar\'}', ['foo' => 'bar', 'bar' => 'foo: bar']],
+            ['{\'foo\': \'bar\', "bar": \'foo: bar\'}', ['foo' => 'bar', 'bar' => 'foo: bar']],
+            ['{\'foo\'\'\': \'bar\', "bar\"": \'foo: bar\'}', ['foo\'' => 'bar', 'bar"' => 'foo: bar']],
+            ['{\'foo: \': \'bar\', "bar: ": \'foo: bar\'}', ['foo: ' => 'bar', 'bar: ' => 'foo: bar']],
+            ['{"foo:bar": "baz"}', ['foo:bar' => 'baz']],
+            ['{"foo":"bar"}', ['foo' => 'bar']],
 
             // nested sequences and mappings
-            array('[foo, [bar, foo]]', array('foo', array('bar', 'foo'))),
-            array('[foo, {bar: foo}]', array('foo', array('bar' => 'foo'))),
-            array('{ foo: {bar: foo} }', array('foo' => array('bar' => 'foo'))),
-            array('{ foo: [bar, foo] }', array('foo' => array('bar', 'foo'))),
-            array('{ foo:{bar: foo} }', array('foo' => array('bar' => 'foo'))),
-            array('{ foo:[bar, foo] }', array('foo' => array('bar', 'foo'))),
+            ['[foo, [bar, foo]]', ['foo', ['bar', 'foo']]],
+            ['[foo, {bar: foo}]', ['foo', ['bar' => 'foo']]],
+            ['{ foo: {bar: foo} }', ['foo' => ['bar' => 'foo']]],
+            ['{ foo: [bar, foo] }', ['foo' => ['bar', 'foo']]],
+            ['{ foo:{bar: foo} }', ['foo' => ['bar' => 'foo']]],
+            ['{ foo:[bar, foo] }', ['foo' => ['bar', 'foo']]],
 
-            array('[  foo, [  bar, foo  ]  ]', array('foo', array('bar', 'foo'))),
+            ['[  foo, [  bar, foo  ]  ]', ['foo', ['bar', 'foo']]],
 
-            array('[{ foo: {bar: foo} }]', array(array('foo' => array('bar' => 'foo')))),
+            ['[{ foo: {bar: foo} }]', [['foo' => ['bar' => 'foo']]]],
 
-            array('[foo, [bar, [foo, [bar, foo]], foo]]', array('foo', array('bar', array('foo', array('bar', 'foo')), 'foo'))),
+            ['[foo, [bar, [foo, [bar, foo]], foo]]', ['foo', ['bar', ['foo', ['bar', 'foo']], 'foo']]],
 
-            array('[foo, {bar: foo, foo: [foo, {bar: foo}]}, [foo, {bar: foo}]]', array('foo', array('bar' => 'foo', 'foo' => array('foo', array('bar' => 'foo'))), array('foo', array('bar' => 'foo')))),
+            ['[foo, {bar: foo, foo: [foo, {bar: foo}]}, [foo, {bar: foo}]]', ['foo', ['bar' => 'foo', 'foo' => ['foo', ['bar' => 'foo']]], ['foo', ['bar' => 'foo']]]],
 
-            array('[foo, bar: { foo: bar }]', array('foo', '1' => array('bar' => array('foo' => 'bar')))),
-            array('[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', array('foo', '@foo.baz', array('%foo%' => 'foo is %foo%', 'bar' => '%foo%'), true, '@service_container')),
-        );
+            ['[foo, bar: { foo: bar }]', ['foo', '1' => ['bar' => ['foo' => 'bar']]]],
+            ['[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', ['foo', '@foo.baz', ['%foo%' => 'foo is %foo%', 'bar' => '%foo%'], true, '@service_container']],
+        ];
     }
 
     public function getTestsForParseWithMapObjects()
     {
-        return array(
-            array('', ''),
-            array('null', null),
-            array('false', false),
-            array('true', true),
-            array('12', 12),
-            array('-12', -12),
-            array('"quoted string"', 'quoted string'),
-            array("'quoted string'", 'quoted string'),
-            array('12.30e+02', 12.30e+02),
-            array('0x4D2', 0x4D2),
-            array('02333', 02333),
-            array('.Inf', -log(0)),
-            array('-.Inf', log(0)),
-            array("'686e444'", '686e444'),
-            array('686e444', 646e444),
-            array('123456789123456789123456789123456789', '123456789123456789123456789123456789'),
-            array('"foo\r\nbar"', "foo\r\nbar"),
-            array("'foo#bar'", 'foo#bar'),
-            array("'foo # bar'", 'foo # bar'),
-            array("'#cfcfcf'", '#cfcfcf'),
-            array('::form_base.html.twig', '::form_base.html.twig'),
-
-            array('2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)),
-            array('2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)),
-            array('2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)),
-            array('1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)),
-            array('1730-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 1730)),
-
-            array('"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''),
-            array("'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''),
+        return [
+            ['', ''],
+            ['null', null],
+            ['false', false],
+            ['true', true],
+            ['12', 12],
+            ['-12', -12],
+            ['"quoted string"', 'quoted string'],
+            ["'quoted string'", 'quoted string'],
+            ['12.30e+02', 12.30e+02],
+            ['0x4D2', 0x4D2],
+            ['02333', 02333],
+            ['.Inf', -log(0)],
+            ['-.Inf', log(0)],
+            ["'686e444'", '686e444'],
+            ['686e444', 646e444],
+            ['123456789123456789123456789123456789', '123456789123456789123456789123456789'],
+            ['"foo\r\nbar"', "foo\r\nbar"],
+            ["'foo#bar'", 'foo#bar'],
+            ["'foo # bar'", 'foo # bar'],
+            ["'#cfcfcf'", '#cfcfcf'],
+            ['::form_base.html.twig', '::form_base.html.twig'],
+
+            ['2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)],
+            ['2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)],
+            ['2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)],
+            ['1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)],
+            ['1730-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 1730)],
+
+            ['"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''],
+            ["'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''],
 
             // sequences
             // urls are no key value mapping. see #3609. Valid yaml "key: value" mappings require a space after the colon
-            array('[foo, http://urls.are/no/mappings, false, null, 12]', array('foo', 'http://urls.are/no/mappings', false, null, 12)),
-            array('[  foo  ,   bar , false  ,  null     ,  12  ]', array('foo', 'bar', false, null, 12)),
-            array('[\'foo,bar\', \'foo bar\']', array('foo,bar', 'foo bar')),
+            ['[foo, http://urls.are/no/mappings, false, null, 12]', ['foo', 'http://urls.are/no/mappings', false, null, 12]],
+            ['[  foo  ,   bar , false  ,  null     ,  12  ]', ['foo', 'bar', false, null, 12]],
+            ['[\'foo,bar\', \'foo bar\']', ['foo,bar', 'foo bar']],
 
             // mappings
-            array('{foo: bar,bar: foo,"false": false,"null": null,integer: 12}', (object) array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12), Yaml::PARSE_OBJECT_FOR_MAP),
-            array('{ foo  : bar, bar : foo,  "false"  :   false,  "null"  :   null,  integer :  12  }', (object) array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12), Yaml::PARSE_OBJECT_FOR_MAP),
-            array('{foo: \'bar\', bar: \'foo: bar\'}', (object) array('foo' => 'bar', 'bar' => 'foo: bar')),
-            array('{\'foo\': \'bar\', "bar": \'foo: bar\'}', (object) array('foo' => 'bar', 'bar' => 'foo: bar')),
-            array('{\'foo\'\'\': \'bar\', "bar\"": \'foo: bar\'}', (object) array('foo\'' => 'bar', 'bar"' => 'foo: bar')),
-            array('{\'foo: \': \'bar\', "bar: ": \'foo: bar\'}', (object) array('foo: ' => 'bar', 'bar: ' => 'foo: bar')),
-            array('{"foo:bar": "baz"}', (object) array('foo:bar' => 'baz')),
-            array('{"foo":"bar"}', (object) array('foo' => 'bar')),
+            ['{foo: bar,bar: foo,"false": false,"null": null,integer: 12}', (object) ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12], Yaml::PARSE_OBJECT_FOR_MAP],
+            ['{ foo  : bar, bar : foo,  "false"  :   false,  "null"  :   null,  integer :  12  }', (object) ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12], Yaml::PARSE_OBJECT_FOR_MAP],
+            ['{foo: \'bar\', bar: \'foo: bar\'}', (object) ['foo' => 'bar', 'bar' => 'foo: bar']],
+            ['{\'foo\': \'bar\', "bar": \'foo: bar\'}', (object) ['foo' => 'bar', 'bar' => 'foo: bar']],
+            ['{\'foo\'\'\': \'bar\', "bar\"": \'foo: bar\'}', (object) ['foo\'' => 'bar', 'bar"' => 'foo: bar']],
+            ['{\'foo: \': \'bar\', "bar: ": \'foo: bar\'}', (object) ['foo: ' => 'bar', 'bar: ' => 'foo: bar']],
+            ['{"foo:bar": "baz"}', (object) ['foo:bar' => 'baz']],
+            ['{"foo":"bar"}', (object) ['foo' => 'bar']],
 
             // nested sequences and mappings
-            array('[foo, [bar, foo]]', array('foo', array('bar', 'foo'))),
-            array('[foo, {bar: foo}]', array('foo', (object) array('bar' => 'foo'))),
-            array('{ foo: {bar: foo} }', (object) array('foo' => (object) array('bar' => 'foo'))),
-            array('{ foo: [bar, foo] }', (object) array('foo' => array('bar', 'foo'))),
+            ['[foo, [bar, foo]]', ['foo', ['bar', 'foo']]],
+            ['[foo, {bar: foo}]', ['foo', (object) ['bar' => 'foo']]],
+            ['{ foo: {bar: foo} }', (object) ['foo' => (object) ['bar' => 'foo']]],
+            ['{ foo: [bar, foo] }', (object) ['foo' => ['bar', 'foo']]],
 
-            array('[  foo, [  bar, foo  ]  ]', array('foo', array('bar', 'foo'))),
+            ['[  foo, [  bar, foo  ]  ]', ['foo', ['bar', 'foo']]],
 
-            array('[{ foo: {bar: foo} }]', array((object) array('foo' => (object) array('bar' => 'foo')))),
+            ['[{ foo: {bar: foo} }]', [(object) ['foo' => (object) ['bar' => 'foo']]]],
 
-            array('[foo, [bar, [foo, [bar, foo]], foo]]', array('foo', array('bar', array('foo', array('bar', 'foo')), 'foo'))),
+            ['[foo, [bar, [foo, [bar, foo]], foo]]', ['foo', ['bar', ['foo', ['bar', 'foo']], 'foo']]],
 
-            array('[foo, {bar: foo, foo: [foo, {bar: foo}]}, [foo, {bar: foo}]]', array('foo', (object) array('bar' => 'f
F438
oo', 'foo' => array('foo', (object) array('bar' => 'foo'))), array('foo', (object) array('bar' => 'foo')))),
+            ['[foo, {bar: foo, foo: [foo, {bar: foo}]}, [foo, {bar: foo}]]', ['foo', (object) ['bar' => 'foo', 'foo' => ['foo', (object) ['bar' => 'foo']]], ['foo', (object) ['bar' => 'foo']]]],
 
-            array('[foo, bar: { foo: bar }]', array('foo', '1' => (object) array('bar' => (object) array('foo' => 'bar')))),
-            array('[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', array('foo', '@foo.baz', (object) array('%foo%' => 'foo is %foo%', 'bar' => '%foo%'), true, '@service_container')),
+            ['[foo, bar: { foo: bar }]', ['foo', '1' => (object) ['bar' => (object) ['foo' => 'bar']]]],
+            ['[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', ['foo', '@foo.baz', (object) ['%foo%' => 'foo is %foo%', 'bar' => '%foo%'], true, '@service_container']],
 
-            array('{}', new \stdClass()),
-            array('{ foo  : bar, bar : {}  }', (object) array('foo' => 'bar', 'bar' => new \stdClass())),
-            array('{ foo  : [], bar : {}  }', (object) array('foo' => array(), 'bar' => new \stdClass())),
-            array('{foo: \'bar\', bar: {} }', (object) array('foo' => 'bar', 'bar' => new \stdClass())),
-            array('{\'foo\': \'bar\', "bar": {}}', (object) array('foo' => 'bar', 'bar' => new \stdClass())),
-            array('{\'foo\': \'bar\', "bar": \'{}\'}', (object) array('foo' => 'bar', 'bar' => '{}')),
+            ['{}', new \stdClass()],
+            ['{ foo  : bar, bar : {}  }', (object) ['foo' => 'bar', 'bar' => new \stdClass()]],
+            ['{ foo  : [], bar : {}  }', (object) ['foo' => [], 'bar' => new \stdClass()]],
+            ['{foo: \'bar\', bar: {} }', (object) ['foo' => 'bar', 'bar' => new \stdClass()]],
+            ['{\'foo\': \'bar\', "bar": {}}', (object) ['foo' => 'bar', 'bar' => new \stdClass()]],
+            ['{\'foo\': \'bar\', "bar": \'{}\'}', (object) ['foo' => 'bar', 'bar' => '{}']],
 
-            array('[foo, [{}, {}]]', array('foo', array(new \stdClass(), new \stdClass()))),
-            array('[foo, [[], {}]]', array('foo', array(array(), new \stdClass()))),
-            array('[foo, [[{}, {}], {}]]', array('foo', array(array(new \stdClass(), new \stdClass()), new \stdClass()))),
-            array('[foo, {bar: {}}]', array('foo', '1' => (object) array('bar' => new \stdClass()))),
-        );
+            ['[foo, [{}, {}]]', ['foo', [new \stdClass(), new \stdClass()]]],
+            ['[foo, [[], {}]]', ['foo', [[], new \stdClass()]]],
+            ['[foo, [[{}, {}], {}]]', ['foo', [[new \stdClass(), new \stdClass()], new \stdClass()]]],
+            ['[foo, {bar: {}}]', ['foo', '1' => (object) ['bar' => new \stdClass()]]],
+        ];
     }
 
     public function getTestsForDump()
     {
-        return array(
-            array('null', null),
-            array('false', false),
-            array('true', true),
-            array('12', 12),
-            array("'1_2'", '1_2'),
-            array('_12', '_12'),
-            array("'12_'", '12_'),
-            array("'quoted string'", 'quoted string'),
-            array('!!float 1230', 12.30e+02),
-            array('1234', 0x4D2),
-            array('1243', 02333),
-            array("'0x_4_D_2_'", '0x_4_D_2_'),
-            array("'0_2_3_3_3'", '0_2_3_3_3'),
-            array('.Inf', -log(0)),
-            array('-.Inf', log(0)),
-            array("'686e444'", '686e444'),
-            array('"foo\r\nbar"', "foo\r\nbar"),
-            array("'foo#bar'", 'foo#bar'),
-            array("'foo # bar'", 'foo # bar'),
-            array("'#cfcfcf'", '#cfcfcf'),
-
-            array("'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''),
-
-            array("'-dash'", '-dash'),
-            array("'-'", '-'),
+        return [
+            ['null', null],
+            ['false', false],
+            ['true', true],
+            ['12', 12],
+            ["'1_2'", '1_2'],
+            ['_12', '_12'],
+            ["'12_'", '12_'],
+            ["'quoted string'", 'quoted string'],
+            ['!!float 1230', 12.30e+02],
+            ['1234', 0x4D2],
+            ['1243', 02333],
+            ["'0x_4_D_2_'", '0x_4_D_2_'],
+            ["'0_2_3_3_3'", '0_2_3_3_3'],
+            ['.Inf', -log(0)],
+            ['-.Inf', log(0)],
+            ["'686e444'", '686e444'],
+            ['"foo\r\nbar"', "foo\r\nbar"],
+            ["'foo#bar'", 'foo#bar'],
+            ["'foo # bar'", 'foo # bar'],
+            ["'#cfcfcf'", '#cfcfcf'],
+
+            ["'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''],
+
+            ["'-dash'", '-dash'],
+            ["'-'", '-'],
 
             // Pre-YAML-1.2 booleans
-            array("'y'", 'y'),
-            array("'n'", 'n'),
-            array("'yes'", 'yes'),
-            array("'no'", 'no'),
-            array("'on'", 'on'),
-            array("'off'", 'off'),
+            ["'y'", 'y'],
+            ["'n'", 'n'],
+            ["'yes'", 'yes'],
+            ["'no'", 'no'],
+            ["'on'", 'on'],
+            ["'off'", 'off'],
 
             // sequences
-            array('[foo, bar, false, null, 12]', array('foo', 'bar', false, null, 12)),
-            array('[\'foo,bar\', \'foo bar\']', array('foo,bar', 'foo bar')),
+            ['[foo, bar, false, null, 12]', ['foo', 'bar', false, null, 12]],
+            ['[\'foo,bar\', \'foo bar\']', ['foo,bar', 'foo bar']],
 
             // mappings
-            array('{ foo: bar, bar: foo, \'false\': false, \'null\': null, integer: 12 }', array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12)),
-            array('{ foo: bar, bar: \'foo: bar\' }', array('foo' => 'bar', 'bar' => 'foo: bar')),
+            ['{ foo: bar, bar: foo, \'false\': false, \'null\': null, integer: 12 }', ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12]],
+            ['{ foo: bar, bar: \'foo: bar\' }', ['foo' => 'bar', 'bar' => 'foo: bar']],
 
             // nested sequences and mappings
-            array('[foo, [bar, foo]]', array('foo', array('bar', 'foo'))),
+            ['[foo, [bar, foo]]', ['foo', ['bar', 'foo']]],
 
-            array('[foo, [bar, [foo, [bar, foo]], foo]]', array('foo', array('bar', array('foo', array('bar', 'foo')), 'foo'))),
+            ['[foo, [bar, [foo, [bar, foo]], foo]]', ['foo', ['bar', ['foo', ['bar', 'foo']], 'foo']]],
 
-            array('{ foo: { bar: foo } }', array('foo' => array('bar' => 'foo'))),
+            ['{ foo: { bar: foo } }', ['foo' => ['bar' => 'foo']]],
 
-            array('[foo, { bar: foo }]', array('foo', array('bar' => 'foo'))),
+            ['[foo, { bar: foo }]', ['foo', ['bar' => 'foo']]],
 
-            array('[foo, { bar: foo, foo: [foo, { bar: foo }] }, [foo, { bar: foo }]]', array('foo', array('bar' => 'foo', 'foo' => array('foo', array('bar' => 'foo'))), array('foo', array('bar' => 'foo')))),
+            ['[foo, { bar: foo, foo: [foo, { bar: foo }] }, [foo, { bar: foo }]]', ['foo', ['bar' => 'foo', 'foo' => ['foo', ['bar' => 'foo']]], ['foo', ['bar' => 'foo']]]],
 
-            array('[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', array('foo', '@foo.baz', array('%foo%' => 'foo is %foo%', 'bar' => '%foo%'), true, '@service_container')),
+            ['[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', ['foo', '@foo.baz', ['%foo%' => 'foo is %foo%', 'bar' => '%foo%'], true, '@service_container']],
 
-            array('{ foo: { bar: { 1: 2, baz: 3 } } }', array('foo' => array('bar' => array(1 => 2, 'baz' => 3)))),
-        );
+            ['{ foo: { bar: { 1: 2, baz: 3 } } }', ['foo' => ['bar' => [1 => 2, 'baz' => 3]]]],
+        ];
     }
 
     /**
@@ -625,12 +625,12 @@ public function testParseTimestampAsDateTimeObject($yaml, $year, $month, $day, $
 
     public function getTimestampTests()
     {
-        return array(
-            'canonical' => array('2001-12-15T02:59:43.1Z', 2001, 12, 15, 2, 59, 43.1, '+0000'),
-            'ISO-8601' => array('2001-12-15t21:59:43.10-05:00', 2001, 12, 16, 2, 59, 43.1, '-0500'),
-            'spaced' => array('2001-12-15 21:59:43.10 -5', 2001, 12, 16, 2, 59, 43.1, '-0500'),
-            'date' => array('2001-12-15', 2001, 12, 15, 0, 0, 0, '+0000'),
-        );
+        return [
+            'canonical' => ['2001-12-15T02:59:43.1Z', 2001, 12, 15, 2, 59, 43.1, '+0000'],
+            'ISO-8601' => ['2001-12-15t21:59:43.10-05:00', 2001, 12, 16, 2, 59, 43.1, '-0500'],
+            'spaced' => ['2001-12-15 21:59:43.10 -5', 2001, 12, 16, 2, 59, 43.1, '-0500'],
+            'date' => ['2001-12-15', 2001, 12, 15, 0, 0, 0, '+0000'],
+        ];
     }
 
     /**
@@ -647,7 +647,7 @@ public function testParseNestedTimestampListAsDateTimeObject($yaml, $year, $mont
             $expected->setTime($hour, $minute, $second);
         }
 
-        $expectedNested = array('nested' => array($expected));
+        $expectedNested = ['nested' => [$expected]];
         $yamlNested = "{nested: [$yaml]}";
 
         $this->assertEquals($expectedNested, Inline::parse($yamlNested, Yaml::PARSE_DATETIME));
@@ -663,13 +663,13 @@ public function testDumpDateTime($dateTime, $expected)
 
     public function getDateTimeDumpTests()
     {
-        $tests = array();
+        $tests = [];
 
         $dateTime = new \DateTime('2001-12-15 21:59:43', new \DateTimeZone('UTC'));
-        $tests['date-time-utc'] = array($dateTime, '2001-12-15T21:59:43+00:00');
+        $tests['date-time-utc'] = [$dateTime, '2001-12-15T21:59:43+00:00'];
 
         $dateTime = new \DateTimeImmutable('2001-07-15 21:59:43', new \DateTimeZone('Europe/Berlin'));
-        $tests['immutable-date-time-europe-berlin'] = array($dateTime, '2001-07-15T21:59:43+02:00');
+        $tests['immutable-date-time-europe-berlin'] = [$dateTime, '2001-07-15T21:59:43+02:00'];
 
         return $tests;
     }
@@ -684,11 +684,11 @@ public function testParseBinaryData($data)
 
     public function getBinaryData()
     {
-        return array(
-            'enclosed with double quotes' => array('!!binary "SGVsbG8gd29ybGQ="'),
-            'enclosed with single quotes' => array("!!binary 'SGVsbG8gd29ybGQ='"),
-            'containing spaces' => array('!!binary  "SGVs bG8gd 29ybGQ="'),
-        );
+        return [
+            'enclosed with double quotes' => ['!!binary "SGVsbG8gd29ybGQ="'],
+            'enclosed with single quotes' => ["!!binary 'SGVsbG8gd29ybGQ='"],
+            'containing spaces' => ['!!binary  "SGVs bG8gd 29ybGQ="'],
+        ];
     }
 
     /**
@@ -708,12 +708,12 @@ public function testParseInvalidBinaryData($data, $expectedMessage)
 
     public function getInvalidBinaryData()
     {
-        return array(
-            'length not a multiple of four' => array('!!binary "SGVsbG8d29ybGQ="', '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/'),
-            'invalid characters' => array('!!binary "SGVsbG8#d29ybGQ="', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'too many equals characters' => array('!!binary "SGVsbG8gd29yb==="', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'misplaced equals character' => array('!!binary "SGVsbG8gd29ybG=Q"', '/The base64 encoded data \(.*\) contains invalid characters/'),
-        );
+        return [
+            'length not a multiple of four' => ['!!binary "SGVsbG8d29ybGQ="', '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/'],
+            'invalid characters' => ['!!binary "SGVsbG8#d29ybGQ="', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'too many equals characters' => ['!!binary "SGVsbG8gd29yb==="', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'misplaced equals character' => ['!!binary "SGVsbG8gd29ybG=Q"', '/The base64 encoded data \(.*\) contains invalid characters/'],
+        ];
     }
 
     /**
@@ -729,7 +729,7 @@ public function testVeryLongQuotedStrings()
     {
         $longStringWithQuotes = str_repeat("x\r\n\\\"x\"x", 1000);
 
-        $yamlString = Inline::dump(array('longStringWithQuotes' => $longStringWithQuotes));
+        $yamlString = Inline::dump(['longStringWithQuotes' => $longStringWithQuotes]);
         $arrayFromYaml = Inline::parse($yamlString);
 
         $this->assertEquals($longStringWithQuotes, $arrayFromYaml['longStringWithQuotes']);
@@ -741,7 +741,7 @@ public function testVeryLongQuotedStrings()
      */
     public function testOmittedMappingKeyIsParsedAsColon()
     {
-        $this->assertSame(array(':' => 'foo'), Inline::parse('{: foo}'));
+        $this->assertSame([':' => 'foo'], Inline::parse('{: foo}'));
     }
 
     /**
@@ -754,15 +754,15 @@ public function testParseMissingMappingValueAsNull($yaml, $expected)
 
     public function getTestsForNullValues()
     {
-        return array(
-            'null before closing curly brace' => array('{foo:}', array('foo' => null)),
-            'null before comma' => array('{foo:, bar: baz}', array('foo' => null, 'bar' => 'baz')),
-        );
+        return [
+            'null before closing curly brace' => ['{foo:}', ['foo' => null]],
+            'null before comma' => ['{foo:, bar: baz}', ['foo' => null, 'bar' => 'baz']],
+        ];
     }
 
     public function testTheEmptyStringIsAValidMappingKey()
     {
-        $this->assertSame(array('' => 'foo'), Inline::parse('{ "": foo }'));
+        $this->assertSame(['' => 'foo'], Inline::parse('{ "": foo }'));
     }
 
     /**
@@ -788,12 +788,12 @@ public function testExplicitStringCastingOfMappingKeys($yaml, $expected)
 
     public function getNotPhpCompatibleMappingKeyData()
     {
-        return array(
-            'boolean-true' => array('{true: "foo"}', array('true' => 'foo')),
-            'boolean-false' => array('{false: "foo"}', array('false' => 'foo')),
-            'null' => array('{null: "foo"}', array('null' => 'foo')),
-            'float' => array('{0.25: "foo"}', array('0.25' => 'foo')),
-        );
+        return [
+            'boolean-true' => ['{true: "foo"}', ['true' => 'foo']],
+            'boolean-false' => ['{false: "foo"}', ['false' => 'foo']],
+            'null' => ['{null: "foo"}', ['null' => 'foo']],
+            'float' => ['{0.25: "foo"}', ['0.25' => 'foo']],
+        ];
     }
 
     /**
@@ -802,7 +802,7 @@ public function getNotPhpCompatibleMappingKeyData()
      */
     public function testDeprecatedStrTag()
     {
-        $this->assertSame(array('foo' => 'bar'), Inline::parse('{ foo: !str bar }'));
+        $this->assertSame(['foo' => 'bar'], Inline::parse('{ foo: !str bar }'));
     }
 
     /**
diff --git a/src/Symfony/Component/Yaml/Tests/ParserTest.php b/src/Symfony/Component/Yaml/Tests/ParserTest.php
index 38ed1b340d27..0f25732ab442 100644
--- a/src/Symfony/Component/Yaml/Tests/ParserTest.php
+++ b/src/Symfony/Component/Yaml/Tests/ParserTest.php
@@ -39,7 +39,7 @@ protected function tearDown()
      */
     public function testSpecifications($expected, $yaml, $comment, $deprecated)
     {
-        $deprecations = array();
+        $deprecations = [];
 
         if ($deprecated) {
             set_error_handler(function ($type, $msg) use (&$deprecations) {
@@ -104,12 +104,12 @@ public function getLegacyNonStringMappingKeysData()
     public function testTabsInYaml()
     {
         // test tabs in YAML
-        $yamls = array(
+        $yamls = [
             "foo:\n	bar",
             "foo:\n 	bar",
             "foo:\n	 bar",
             "foo:\n 	 bar",
-        );
+        ];
 
         foreach ($yamls as $yaml) {
             try {
@@ -136,7 +136,7 @@ public function testEndOfTheDocumentMarker()
 
     public function getBlockChompingTests()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOF'
 foo: |-
@@ -147,11 +147,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping strip with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping strip with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |-
@@ -164,19 +164,19 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping strip with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping strip with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 {}
 
 
 EOF;
-        $expected = array();
-        $tests['Literal block chomping strip with multiple trailing newlines after a 1-liner'] = array($expected, $yaml);
+        $expected = [];
+        $tests['Literal block chomping strip with multiple trailing newlines after a 1-liner'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |-
@@ -186,11 +186,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping strip without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping strip without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |
@@ -201,11 +201,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo\n",
-        );
-        $tests['Literal block chomping clip with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping clip with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |
@@ -218,11 +218,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo\n",
-        );
-        $tests['Literal block chomping clip with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping clip with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo:
@@ -231,14 +231,14 @@ public function getBlockChompingTests()
 
     two
 EOF;
-        $expected = array(
-            'foo' => array(
-                array(
+        $expected = [
+            'foo' => [
+                [
                     'bar' => "one\n\ntwo",
-                ),
-            ),
-        );
-        $tests['Literal block chomping clip with embedded blank line inside unindented collection'] = array($expected, $yaml);
+                ],
+            ],
+        ];
+        $tests['Literal block chomping clip with embedded blank line inside unindented collection'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |
@@ -248,11 +248,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping clip without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping clip without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |+
@@ -263,11 +263,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo\n",
-        );
-        $tests['Literal block chomping keep with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping keep with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |+
@@ -280,11 +280,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n\n",
             'bar' => "one\ntwo\n\n",
-        );
-        $tests['Literal block chomping keep with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping keep with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |+
@@ -294,11 +294,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping keep without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping keep without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >-
@@ -309,11 +309,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => 'one two',
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping strip with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping strip with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >-
@@ -326,11 +326,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => 'one two',
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping strip with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping strip with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >-
@@ -340,11 +340,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => 'one two',
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping strip without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping strip without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >
@@ -355,11 +355,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => "one two\n",
-        );
-        $tests['Folded block chomping clip with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping clip with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >
@@ -372,11 +372,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => "one two\n",
-        );
-        $tests['Folded block chomping clip with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping clip with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >
@@ -386,11 +386,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping clip without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping clip without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >+
@@ -401,11 +401,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => "one two\n",
-        );
-        $tests['Folded block chomping keep with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping keep with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >+
@@ -418,11 +418,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n\n",
             'bar' => "one two\n\n",
-        );
-        $tests['Folded block chomping keep with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping keep with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >+
@@ -432,11 +432,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping keep without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping keep without trailing newline'] = [$expected, $yaml];
 
         return $tests;
     }
@@ -463,9 +463,9 @@ public function testBlockLiteralWithLeadingNewlines()
     bar
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "\n\nbar",
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -476,7 +476,7 @@ public function testObjectSupportEnabled()
 foo: !php/object O:30:"Symfony\Component\Yaml\Tests\B":1:{s:1:"b";s:3:"foo";}
 bar: 1
 EOF;
-        $this->assertEquals(array('foo' => new B(), 'bar' => 1), $this->parser->parse($input, Yaml::PARSE_OBJECT), '->parse() is able to parse objects');
+        $this->assertEquals(['foo' => new B(), 'bar' => 1], $this->parser->parse($input, Yaml::PARSE_OBJECT), '->parse() is able to parse objects');
     }
 
     /**
@@ -488,7 +488,7 @@ public function testObjectSupportEnabledPassingTrue()
 foo: !php/object:O:30:"Symfony\Component\Yaml\Tests\B":1:{s:1:"b";s:3:"foo";}
 bar: 1
 EOF;
-        $this->assertEquals(array('foo' => new B(), 'bar' => 1), $this->parser->parse($input, false, true), '->parse() is able to parse objects');
+        $this->assertEquals(['foo' => new B(), 'bar' => 1], $this->parser->parse($input, false, true), '->parse() is able to parse objects');
     }
 
     /**
@@ -497,25 +497,25 @@ public function testObjectSupportEnabledPassingTrue()
      */
     public function testObjectSupportEnabledWithDeprecatedTag($yaml)
     {
-        $this->assertEquals(array('foo' => new B(), 'bar' => 1), $this->parser->parse($yaml, Yaml::PARSE_OBJECT), '->parse() is able to parse objects');
+        $this->assertEquals(['foo' => new B(), 'bar' => 1], $this->parser->parse($yaml, Yaml::PARSE_OBJECT), '->parse() is able to parse objects');
     }
 
     public function deprecatedObjectValueProvider()
     {
-        return array(
-            array(
+        return [
+            [
                 <<<YAML
 foo: !!php/object:O:30:"Symfony\Component\Yaml\Tests\B":1:{s:1:"b";s:3:"foo";}
 bar: 1
 YAML
-            ),
-            array(
+            ],
+            [
                 <<<YAML
 foo: !php/object:O:30:"Symfony\Component\Yaml\Tests\B":1:{s:1:"b";s:3:"foo";}
 bar: 1
 YAML
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -523,7 +523,7 @@ public function deprecatedObjectValueProvider()
      */
     public function testObjectSupportDisabledButNoExceptions($input)
     {
-        $this->assertEquals(array('foo' => null, 'bar' => 1), $this->parser->parse($input), '->parse() does not parse objects');
+        $this->assertEquals(['foo' => null, 'bar' => 1], $this->parser->parse($input), '->parse() does not parse objects');
     }
 
     /**
@@ -547,7 +547,7 @@ public function testObjectForMapEnabledWithMappingUsingBooleanToggles($yaml, $ex
 
     public function getObjectForMapTests()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOF'
 foo:
@@ -555,20 +555,20 @@ public function getObjectForMapTests()
 EOF;
         $expected = new \stdClass();
         $expected->foo = new \stdClass();
-        $expected->foo->fiz = array('cat');
-        $tests['mapping'] = array($yaml, $expected);
+        $expected->foo->fiz = ['cat'];
+        $tests['mapping'] = [$yaml, $expected];
 
         $yaml = '{ "foo": "bar", "fiz": "cat" }';
         $expected = new \stdClass();
         $expected->foo = 'bar';
         $expected->fiz = 'cat';
-        $tests['inline-mapping'] = array($yaml, $expected);
+        $tests['inline-mapping'] = [$yaml, $expected];
 
         $yaml = "foo: bar\nbaz: foobar";
         $expected = new \stdClass();
         $expected->foo = 'bar';
         $expected->baz = 'foobar';
-        $tests['object-for-map-is-applied-after-parsing'] = array($yaml, $expected);
+        $tests['object-for-map-is-applied-after-parsing'] = [$yaml, $expected];
 
         $yaml = <<<'EOT'
 array:
@@ -576,12 +576,12 @@ public function getObjectForMapTests()
   - key: two
 EOT;
         $expected = new \stdClass();
-        $expected->array = array();
+        $expected->array = [];
         $expected->array[0] = new \stdClass();
         $expected->array[0]->key = 'one';
         $expected->array[1] = new \stdClass();
         $expected->array[1]->key = 'two';
-        $tests['nest-map-and-sequence'] = array($yaml, $expected);
+        $tests['nest-map-and-sequence'] = [$yaml, $expected];
 
         $yaml = <<<'YAML'
 map:
@@ -592,7 +592,7 @@ public function getObjectForMapTests()
         $expected->map = new \stdClass();
         $expected->map->{1} = 'one';
         $expected->map->{2} = 'two';
-        $tests['numeric-keys'] = array($yaml, $expected);
+        $tests['numeric-keys'] = [$yaml, $expected];
 
         $yaml = <<<'YAML'
 map:
@@ -603,7 +603,7 @@ public function getObjectForMapTests()
         $expected->map = new \stdClass();
         $expected->map->{0} = 'one';
         $expected->map->{1} = 'two';
-        $tests['zero-indexed-numeric-keys'] = array($yaml, $expected);
+        $tests['zero-indexed-numeric-keys'] = [$yaml, $expected];
 
         return $tests;
     }
@@ -621,9 +621,9 @@ public function testCanParseContentWithTrailingSpaces()
     {
         $yaml = "items:  \n  foo: bar";
 
-        $expected = array(
-            'items' => array('foo' => 'bar'),
-        );
+        $expected = [
+            'items' => ['foo' => 'bar'],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -649,10 +649,10 @@ public function invalidDumpedObjectProvider()
 bar: 1
 EOF;
 
-        return array(
-            'yaml-tag' => array($yamlTag),
-            'local-tag' => array($localTag),
-        );
+        return [
+            'yaml-tag' => [$yamlTag],
+            'local-tag' => [$localTag],
+        ];
     }
 
     /**
@@ -660,11 +660,11 @@ public function invalidDumpedObjectProvider()
      */
     public function testNonUtf8Exception()
     {
-        $yamls = array(
+        $yamls = [
             iconv('UTF-8', 'ISO-8859-1', "foo: 'äöüß'"),
             iconv('UTF-8', 'ISO-8859-15', "euro: '€'"),
             iconv('UTF-8', 'CP1252', "cp1252: '©ÉÇáñ'"),
-        );
+        ];
 
         foreach ($yamls as $yaml) {
             try {
@@ -755,19 +755,19 @@ public function testSequenceInMappingStartedBySingleDashLine()
 - foo
 d: e
 EOT;
-        $expected = array(
-            'a' => array(
-                array(
-                    'b' => array(
-                        array(
+        $expected = [
+            'a' => [
+                [
+                    'b' => [
+                        [
                             'bar' => 'baz',
-                        ),
-                    ),
-                ),
+                        ],
+                    ],
+                ],
                 'foo',
-            ),
+            ],
             'd' => 'e',
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -781,12 +781,12 @@ public function testSequenceFollowedByCommentEmbeddedInMapping()
 # comment
     d: e
 EOT;
-        $expected = array(
-            'a' => array(
-                'b' => array('c'),
+        $expected = [
+            'a' => [
+                'b' => ['c'],
                 'd' => 'e',
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -802,25 +802,25 @@ public function testNonStringFollowedByCommentEmbeddedInMapping()
         1.1
 # another comment
 EOT;
-        $expected = array(
-            'a' => array(
-                'b' => array(),
+        $expected = [
+            'a' => [
+                'b' => [],
                 'd' => 1.1,
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
 
     public function getParseExceptionNotAffectedMultiLineStringLastResortParsing()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOT'
 a
     b:
 EOT;
-        $tests['parse error on first line'] = array($yaml);
+        $tests['parse error on first line'] = [$yaml];
 
         $yaml = <<<'EOT'
 a
@@ -828,12 +828,12 @@ public function getParseExceptionNotAffectedMultiLineStringLastResortParsing()
 b
     c:
 EOT;
-        $tests['parse error due to inconsistent indentation'] = array($yaml);
+        $tests['parse error due to inconsistent indentation'] = [$yaml];
 
         $yaml = <<<'EOT'
  &  *  !  |  >  '  "  %  @  ` #, { asd a;sdasd }-@^qw3
 EOT;
-        $tests['symfony/symfony/issues/22967#issuecomment-322067742'] = array($yaml);
+        $tests['symfony/symfony/issues/22967#issuecomment-322067742'] = [$yaml];
 
         return $tests;
     }
@@ -855,9 +855,9 @@ public function testMultiLineStringLastResortParsing()
   true
   yes you can
 EOT;
-        $expected = array(
+        $expected = [
             'test' => 'You can have things that don\'t look like strings here true yes you can',
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
 
@@ -866,9 +866,9 @@ public function testMultiLineStringLastResortParsing()
     b
        c
 EOT;
-        $expected = array(
+        $expected = [
             'a' => 'b c',
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -922,11 +922,11 @@ public function testMappingDuplicateKeyBlock()
     child: duplicate
     child: duplicate
 EOD;
-        $expected = array(
-            'parent' => array(
+        $expected = [
+            'parent' => [
                 'child' => 'first',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expected, Yaml::parse($input));
     }
 
@@ -939,11 +939,11 @@ public function testMappingDuplicateKeyFlow()
 parent: { child: first, child: duplicate }
 parent: { child: duplicate, child: duplicate }
 EOD;
-        $expected = array(
-            'parent' => array(
+        $expected = [
+            'parent' => [
                 'child' => 'first',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expected, Yaml::parse($input));
     }
 
@@ -960,30 +960,30 @@ public function testParseExceptionOnDuplicate($input, $duplicateKey, $lineNumber
 
     public function getParseExceptionOnDuplicateData()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<EOD
 parent: { child: first, child: duplicate }
 EOD;
-        $tests[] = array($yaml, 'child', 1);
+        $tests[] = [$yaml, 'child', 1];
 
         $yaml = <<<EOD
 parent:
   child: first,
   child: duplicate
 EOD;
-        $tests[] = array($yaml, 'child', 3);
+        $tests[] = [$yaml, 'child', 3];
 
         $yaml = <<<EOD
 parent: { child: foo }
 parent: { child: bar }
 EOD;
-        $tests[] = array($yaml, 'parent', 2);
+        $tests[] = [$yaml, 'parent', 2];
 
         $yaml = <<<EOD
 parent: { child_mapping: { value: bar},  child_mapping: { value: bar} }
 EOD;
-        $tests[] = array($yaml, 'child_mapping', 1);
+        $tests[] = [$yaml, 'child_mapping', 1];
 
         $yaml = <<<EOD
 parent:
@@ -992,12 +992,12 @@ public function getParseExceptionOnDuplicateData()
   child_mapping:
     value: bar
 EOD;
-        $tests[] = array($yaml, 'child_mapping', 4);
+        $tests[] = [$yaml, 'child_mapping', 4];
 
         $yaml = <<<EOD
 parent: { child_sequence: ['key1', 'key2', 'key3'],  child_sequence: ['key1', 'key2', 'key3'] }
 EOD;
-        $tests[] = array($yaml, 'child_sequence', 1);
+        $tests[] = [$yaml, 'child_sequence', 1];
 
         $yaml = <<<EOD
 parent:
@@ -1010,7 +1010,7 @@ public function getParseExceptionOnDuplicateData()
     - key2
     - key3
 EOD;
-        $tests[] = array($yaml, 'child_sequence', 6);
+        $tests[] = [$yaml, 'child_sequence', 6];
 
         return $tests;
     }
@@ -1021,21 +1021,21 @@ public function testEmptyValue()
 hash:
 EOF;
 
-        $this->assertEquals(array('hash' => null), Yaml::parse($input));
+        $this->assertEquals(['hash' => null], Yaml::parse($input));
     }
 
     public function testCommentAtTheRootIndent()
     {
-        $this->assertEquals(array(
-            'services' => array(
-                'app.foo_service' => array(
+        $this->assertEquals([
+            'services' => [
+                'app.foo_service' => [
                     'class' => 'Foo',
-                ),
-                'app/bar_service' => array(
+                ],
+                'app/bar_service' => [
                     'class' => 'Bar',
-                ),
-            ),
-        ), Yaml::parse(<<<'EOF'
+                ],
+            ],
+        ], Yaml::parse(<<<'EOF'
 # comment 1
 services:
 # comment 2
@@ -1052,7 +1052,7 @@ class: Bar
 
     public function testStringBlockWithComments()
     {
-        $this->assertEquals(array('content' => <<<'EOT'
+        $this->assertEquals(['content' => <<<'EOT'
 # comment 1
 header
 
@@ -1063,7 +1063,7 @@ public function testStringBlockWithComments()
 
 footer # comment3
 EOT
-        ), Yaml::parse(<<<'EOF'
+        ], Yaml::parse(<<<'EOF'
 content: |
     # comment 1
     header
@@ -1080,7 +1080,7 @@ public function testStringBlockWithComments()
 
     public function testFoldedStringBlockWithComments()
     {
-        $this->assertEquals(array(array('content' => <<<'EOT'
+        $this->assertEquals([['content' => <<<'EOT'
 # comment 1
 header
 
@@ -1091,7 +1091,7 @@ public function testFoldedStringBlockWithComments()
 
 footer # comment3
 EOT
-        )), Yaml::parse(<<<'EOF'
+        ]], Yaml::parse(<<<'EOF'
 -
     content: |
         # comment 1
@@ -1109,7 +1109,7 @@ public function testFoldedStringBlockWithComments()
 
     public function testNestedFoldedStringBlockWithComments()
     {
-        $this->assertEquals(array(array(
+        $this->assertEquals([[
             'title' => 'some title',
             'content' => <<<'EOT'
 # comment 1
@@ -1122,7 +1122,7 @@ public function testNestedFoldedStringBlockWithComments()
 
 footer # comment3
 EOT
-        )), Yaml::parse(<<<'EOF'
+        ]], Yaml::parse(<<<'EOF'
 -
     title: some title
     content: |
@@ -1141,17 +1141,17 @@ public function testNestedFoldedStringBlockWithComments()
 
     public function testReferenceResolvingInInlineStrings()
     {
-        $this->assertEquals(array(
+        $this->assertEquals([
             'var' => 'var-value',
             'scalar' => 'var-value',
-            'list' => array('var-value'),
-            'list_in_list' => array(array('var-value')),
-            'map_in_list' => array(array('key' => 'var-value')),
-            'embedded_mapping' => array(array('key' => 'var-value')),
-            'map' => array('key' => 'var-value'),
-            'list_in_map' => array('key' => array('var-value')),
-            'map_in_map' => array('foo' => array('bar' => 'var-value')),
-        ), Yaml::parse(<<<'EOF'
+            'list' => ['var-value'],
+            'list_in_list' => [['var-value']],
+            'map_in_list' => [['key' => 'var-value']],
+            'embedded_mapping' => [['key' => 'var-value']],
+            'map' => ['key' => 'var-value'],
+            'list_in_map' => ['key' => ['var-value']],
+            'map_in_map' => ['foo' => ['bar' => 'var-value']],
+        ], Yaml::parse(<<<'EOF'
 var:  &var var-value
 scalar: *var
 list: [ *var ]
@@ -1173,7 +1173,7 @@ public function testYamlDirective()
 foo: 1
 bar: 2
 EOF;
-        $this->assertEquals(array('foo' => 1, 'bar' => 2), $this->parser->parse($yaml));
+        $this->assertEquals(['foo' => 1, 'bar' => 2], $this->parser->parse($yaml));
     }
 
     /**
@@ -1188,12 +1188,12 @@ public function testFloatKeys()
     1.3: "baz"
 EOF;
 
-        $expected = array(
-            'foo' => array(
+        $expected = [
+            'foo' => [
                 '1.2' => 'bar',
                 '1.3' => 'baz',
-            ),
-        );
+            ],
+        ];
 
         $this->assertEquals($expected, $this->parser->parse($yaml));
     }
@@ -1209,10 +1209,10 @@ public function testBooleanKeys()
 false: bar
 EOF;
 
-        $expected = array(
+        $expected = [
             1 => 'foo',
             0 => 'bar',
-        );
+        ];
 
         $this->assertEquals($expected, $this->parser->parse($yaml));
     }
@@ -1230,14 +1230,14 @@ public function testExplicitStringCasting()
 '~': 'null'
 EOF;
 
-        $expected = array(
+        $expected = [
             '1.2' => 'bar',
             '1.3' => 'baz',
             'true' => 'foo',
             'false' => 'bar',
             'null' => 'null',
             '~' => 'null',
-        );
+        ];
 
         $this->assertEquals($expected, $this->parser->parse($yaml));
     }
@@ -1262,7 +1262,7 @@ public function testColonInMappingValueExceptionNotTriggeredByColonInComment()
     bar: foobar # Note: a comment after a colon
 EOT;
 
-        $this->assertSame(array('foo' => array('bar' => 'foobar')), $this->parser->parse($yaml));
+        $this->assertSame(['foo' => ['bar' => 'foobar']], $this->parser->parse($yaml));
     }
 
     /**
@@ -1275,7 +1275,7 @@ public function testCommentLikeStringsAreNotStrippedInBlockScalars($yaml, $expec
 
     public function getCommentLikeStringInScalarBlockData()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOT'
 pages:
@@ -1292,9 +1292,9 @@ public function getCommentLikeStringInScalarBlockData()
 
             footer # comment3
 EOT;
-        $expected = array(
-            'pages' => array(
-                array(
+        $expected = [
+            'pages' => [
+                [
                     'title' => 'some title',
                     'content' => <<<'EOT'
 # comment 1
@@ -1308,10 +1308,10 @@ public function getCommentLikeStringInScalarBlockData()
 footer # comment3
 EOT
                     ,
-                ),
-            ),
-        );
-        $tests[] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests[] = [$yaml, $expected];
 
         $yaml = <<<'EOT'
 test: |
@@ -1328,7 +1328,7 @@ public function getCommentLikeStringInScalarBlockData()
         # bar
         baz
 EOT;
-        $expected = array(
+        $expected = [
             'test' => <<<'EOT'
 foo
 # bar
@@ -1336,8 +1336,8 @@ public function getCommentLikeStringInScalarBlockData()
 
 EOT
             ,
-            'collection' => array(
-                array(
+            'collection' => [
+                [
                     'one' => <<<'EOT'
 foo
 # bar
@@ -1345,18 +1345,18 @@ public function getCommentLikeStringInScalarBlockData()
 
 EOT
                     ,
-                ),
-                array(
+                ],
+                [
                     'two' => <<<'EOT'
 foo
 # bar
 baz
 EOT
                     ,
-                ),
-            ),
-        );
-        $tests[] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests[] = [$yaml, $expected];
 
         $yaml = <<<'EOT'
 foo:
@@ -1368,17 +1368,17 @@ public function getCommentLikeStringInScalarBlockData()
 # comment
     foobar: ~
 EOT;
-        $expected = array(
-            'foo' => array(
-                'bar' => array(
+        $expected = [
+            'foo' => [
+                'bar' => [
                     'scalar-block' => "line1 line2>\n",
-                ),
-                'baz' => array(
+                ],
+                'baz' => [
                     'foobar' => null,
-                ),
-            ),
-        );
-        $tests[] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests[] = [$yaml, $expected];
 
         $yaml = <<<'EOT'
 a:
@@ -1388,13 +1388,13 @@ public function getCommentLikeStringInScalarBlockData()
 #        second row
     d: hello
 EOT;
-        $expected = array(
-            'a' => array(
+        $expected = [
+            'a' => [
                 'b' => 'hello',
                 'd' => 'hello',
-            ),
-        );
-        $tests[] = array($yaml, $expected);
+            ],
+        ];
+        $tests[] = [$yaml, $expected];
 
         return $tests;
     }
@@ -1412,13 +1412,13 @@ public function testBlankLinesAreParsedAsNewLinesInFoldedBlocks()
 EOT;
 
         $this->assertSame(
-            array(
+            [
                 'test' => <<<'EOT'
 <h2>A heading</h2>
 <ul> <li>a list</li> <li>may be a good example</li> </ul>
 EOT
                 ,
-            ),
+            ],
             $this->parser->parse($yaml)
         );
     }
@@ -1436,7 +1436,7 @@ public function testAdditionallyIndentedLinesAreParsedAsNewLinesInFoldedBlocks()
 EOT;
 
         $this->assertSame(
-            array(
+            [
                 'test' => <<<'EOT'
 <h2>A heading</h2>
 <ul>
@@ -1445,7 +1445,7 @@ public function testAdditionallyIndentedLinesAreParsedAsNewLinesInFoldedBlocks()
 </ul>
 EOT
                 ,
-            ),
+            ],
             $this->parser->parse($yaml)
         );
     }
@@ -1455,28 +1455,28 @@ public function testAdditionallyIndentedLinesAreParsedAsNewLinesInFoldedBlocks()
      */
     public function testParseBinaryData($data)
     {
-        $this->assertSame(array('data' => 'Hello world'), $this->parser->parse($data));
+        $this->assertSame(['data' => 'Hello world'], $this->parser->parse($data));
     }
 
     public function getBinaryData()
     {
-        return array(
-            'enclosed with double quotes' => array('data: !!binary "SGVsbG8gd29ybGQ="'),
-            'enclosed with single quotes' => array("data: !!binary 'SGVsbG8gd29ybGQ='"),
-            'containing spaces' => array('data: !!binary  "SGVs bG8gd 29ybGQ="'),
-            'in block scalar' => array(
+        return [
+            'enclosed with double quotes' => ['data: !!binary "SGVsbG8gd29ybGQ="'],
+            'enclosed with single quotes' => ["data: !!binary 'SGVsbG8gd29ybGQ='"],
+            'containing spaces' => ['data: !!binary  "SGVs bG8gd 29ybGQ="'],
+            'in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8gd29ybGQ=
 EOT
-    ),
-            'containing spaces in block scalar' => array(
+    ],
+            'containing spaces in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVs bG8gd 29ybGQ=
 EOT
-    ),
-        );
+    ],
+        ];
     }
 
     /**
@@ -1496,44 +1496,44 @@ public function testParseInvalidBinaryData($data, $expectedMessage)
 
     public function getInvalidBinaryData()
     {
-        return array(
-            'length not a multiple of four' => array('data: !!binary "SGVsbG8d29ybGQ="', '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/'),
-            'invalid characters' => array('!!binary "SGVsbG8#d29ybGQ="', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'too many equals characters' => array('data: !!binary "SGVsbG8gd29yb==="', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'misplaced equals character' => array('data: !!binary "SGVsbG8gd29ybG=Q"', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'length not a multiple of four in block scalar' => array(
+        return [
+            'length not a multiple of four' => ['data: !!binary "SGVsbG8d29ybGQ="', '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/'],
+            'invalid characters' => ['!!binary "SGVsbG8#d29ybGQ="', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'too many equals characters' => ['data: !!binary "SGVsbG8gd29yb==="', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'misplaced equals character' => ['data: !!binary "SGVsbG8gd29ybG=Q"', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'length not a multiple of four in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8d29ybGQ=
 EOT
                 ,
                 '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/',
-            ),
-            'invalid characters in block scalar' => array(
+            ],
+            'invalid characters in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8#d29ybGQ=
 EOT
                 ,
                 '/The base64 encoded data \(.*\) contains invalid characters/',
-            ),
-            'too many equals characters in block scalar' => array(
+            ],
+            'too many equals characters in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8gd29yb===
 EOT
                 ,
                 '/The base64 encoded data \(.*\) contains invalid characters/',
-            ),
-            'misplaced equals character in block scalar' => array(
+            ],
+            'misplaced equals character in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8gd29ybG=Q
 EOT
                 ,
                 '/The base64 encoded data \(.*\) contains invalid characters/',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testParseDateAsMappingValue()
@@ -1546,7 +1546,7 @@ public function testParseDateAsMappingValue()
         $expectedDate->setDate(2002, 12, 14);
         $expectedDate->setTime(0, 0, 0);
 
-        $this->assertEquals(array('date' => $expectedDate), $this->parser->parse($yaml, Yaml::PARSE_DATETIME));
+        $this->assertEquals(['date' => $expectedDate], $this->parser->parse($yaml, Yaml::PARSE_DATETIME));
     }
 
     /**
@@ -1568,8 +1568,8 @@ public function testParserThrowsExceptionWithCorrectLineNumber($lineNumber, $yam
 
     public function parserThrowsExceptionWithCorrectLineNumberProvider()
     {
-        return array(
-            array(
+        return [
+            [
                 4,
                 <<<'YAML'
 foo:
@@ -1577,8 +1577,8 @@ public function parserThrowsExceptionWithCorrectLineNumberProvider()
         # bar
         bar: "123",
 YAML
-            ),
-            array(
+            ],
+            [
                 5,
                 <<<'YAML'
 foo:
@@ -1587,8 +1587,8 @@ public function parserThrowsExceptionWithCorrectLineNumberProvider()
         # bar
         bar: "123",
 YAML
-            ),
-            array(
+            ],
+            [
                 8,
                 <<<'YAML'
 foo:
@@ -1600,8 +1600,8 @@ public function parserThrowsExceptionWithCorrectLineNumberProvider()
         # bar
         bar: "123",
 YAML
-            ),
-            array(
+            ],
+            [
                 10,
                 <<<'YAML'
 foo:
@@ -1615,8 +1615,8 @@ public function parserThrowsExceptionWithCorrectLineNumberProvider()
         # bar
         bar: "123",
 YAML
-            ),
-        );
+            ],
+        ];
     }
 
     public function testParseMultiLineQuotedString()
@@ -1629,7 +1629,7 @@ public function testParseMultiLineQuotedString()
 bar: baz
 EOT;
 
-        $this->assertSame(array('foo' => 'bar baz foobar foo', 'bar' => 'baz'), $this->parser->parse($yaml));
+        $this->assertSame(['foo' => 'bar baz foobar foo', 'bar' => 'baz'], $this->parser->parse($yaml));
     }
 
     public function testMultiLineQuotedStringWithTrailingBackslash()
@@ -1640,7 +1640,7 @@ public function testMultiLineQuotedStringWithTrailingBackslash()
     bar"
 YAML;
 
-        $this->assertSame(array('foobar' => 'foobar'), $this->parser->parse($yaml));
+        $this->assertSame(['foobar' => 'foobar'], $this->parser->parse($yaml));
     }
 
     public function testCommentCharactersInMultiLineQuotedStrings()
@@ -1651,12 +1651,12 @@ public function testCommentCharactersInMultiLineQuotedStrings()
       #bar'
     bar: baz
 YAML;
-        $expected = array(
-            'foo' => array(
+        $expected = [
+            'foo' => [
                 'foobar' => 'foo #bar',
                 'bar' => 'baz',
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -1668,9 +1668,9 @@ public function testBlankLinesInQuotedMultiLineString()
 
     bar'
 YAML;
-        $expected = array(
+        $expected = [
             'foobar' => "foo\nbar",
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -1685,7 +1685,7 @@ public function testParseMultiLineUnquotedString()
 bar: baz
 EOT;
 
-        $this->assertSame(array('foo' => 'bar baz foobar foo', 'bar' => 'baz'), $this->parser->parse($yaml));
+        $this->assertSame(['foo' => 'bar baz foobar foo', 'bar' => 'baz'], $this->parser->parse($yaml));
     }
 
     public function testParseMultiLineString()
@@ -1703,7 +1703,7 @@ public function testParseMultiLineMappingValue($yaml, $expected, $parseError)
 
     public function multiLineDataProvider()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOF'
 foo:
@@ -1713,15 +1713,15 @@ public function multiLineDataProvider()
     two
     three
 EOF;
-        $expected = array(
-            'foo' => array(
-                array(
+        $expected = [
+            'foo' => [
+                [
                     'bar' => "one\ntwo three",
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         $yaml = <<<'EOF'
 bar
@@ -1729,7 +1729,7 @@ public function multiLineDataProvider()
 EOF;
         $expected = 'bar "foo"';
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         $yaml = <<<'EOF'
 bar
@@ -1737,7 +1737,7 @@ public function multiLineDataProvider()
 EOF;
         $expected = 'bar "foo';
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         $yaml = <<<'EOF'
 bar
@@ -1746,7 +1746,7 @@ public function multiLineDataProvider()
 EOF;
         $expected = "bar\n'foo'";
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         $yaml = <<<'EOF'
 bar
@@ -1755,14 +1755,14 @@ public function multiLineDataProvider()
 EOF;
         $expected = "bar\nfoo'";
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         return $tests;
     }
 
     public function testTaggedInlineMapping()
     {
-        $this->assertEquals(new TaggedValue('foo', array('foo' => 'bar')), $this->parser->parse('!foo {foo: bar}', Yaml::PARSE_CUSTOM_TAGS));
+        $this->assertEquals(new TaggedValue('foo', ['foo' => 'bar']), $this->parser->parse('!foo {foo: bar}', Yaml::PARSE_CUSTOM_TAGS));
     }
 
     /**
@@ -1775,32 +1775,32 @@ public function testCustomTagSupport($expected, $yaml)
 
     public function taggedValuesProvider()
     {
-        return array(
-            'sequences' => array(
-                array(new TaggedValue('foo', array('yaml')), new TaggedValue('quz', array('bar'))),
+        return [
+            'sequences' => [
+                [new TaggedValue('foo', ['yaml']), new TaggedValue('quz', ['bar'])],
                 <<<YAML
 - !foo
     - yaml
 - !quz [bar]
 YAML
-            ),
-            'mappings' => array(
-                new TaggedValue('foo', array('foo' => new TaggedValue('quz', array('bar')), 'quz' => new TaggedValue('foo', array('quz' => 'bar')))),
+            ],
+            'mappings' => [
+                new TaggedValue('foo', ['foo' => new TaggedValue('quz', ['bar']), 'quz' => new TaggedValue('foo', ['quz' => 'bar'])]),
                 <<<YAML
 !foo
 foo: !quz [bar]
 quz: !foo
    quz: bar
 YAML
-            ),
-            'inline' => array(
-                array(new TaggedValue('foo', array('foo', 'bar')), new TaggedValue('quz', array('foo' => 'bar', 'quz' => new TaggedValue('bar', array('one' => 'bar'))))),
+            ],
+            'inline' => [
+                [new TaggedValue('foo', ['foo', 'bar']), new TaggedValue('quz', ['foo' => 'bar', 'quz' => new TaggedValue('bar', ['one' => 'bar'])])],
                 <<<YAML
 - !foo [foo, bar]
 - !quz {foo: bar, quz: !bar {one: bar}}
 YAML
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -1895,7 +1895,7 @@ private function loadTestsFromFixtureFiles($testsFile)
     {
         $parser = new Parser();
 
-        $tests = array();
+        $tests = [];
         $files = $parser->parseFile(__DIR__.'/Fixtures/'.$testsFile);
         foreach ($files as $file) {
             $yamls = file_get_contents(__DIR__.'/Fixtures/'.$file.'.yml');
@@ -1912,7 +1912,7 @@ private function loadTestsFromFixtureFiles($testsFile)
                 } else {
                     eval('$expected = '.trim($test['php']).';');
 
-                    $tests[] = array(var_export($expected, true), $test['yaml'], $test['test'], isset($test['deprecated']) ? $test['deprecated'] : false);
+                    $tests[] = [var_export($expected, true), $test['yaml'], $test['test'], isset($test['deprecated']) ? $test['deprecated'] : false];
                 }
             }
         }
@@ -1923,7 +1923,7 @@ private function loadTestsFromFixtureFiles($testsFile)
     public function testCanParseVeryLongValue()
     {
         $longStringWithSpaces = str_repeat('xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ', 20000);
-        $trickyVal = array('x' => $longStringWithSpaces);
+        $trickyVal = ['x' => $longStringWithSpaces];
 
         $yamlString = Yaml::dump($trickyVal);
         $arrayFromYaml = $this->parser->parse($yamlString);
@@ -1961,16 +1961,16 @@ public function testPhpConstantTagMappingKey()
             - !php/const 'Symfony\Component\Yaml\Tests\B::BAR'
         to: !php/const 'Symfony\Component\Yaml\Tests\B::BAZ'
 YAML;
-        $expected = array(
-            'transitions' => array(
-                'foo' => array(
-                    'from' => array(
+        $expected = [
+            'transitions' => [
+                'foo' => [
+                    'from' => [
                         'bar',
-                    ),
+                    ],
                     'to' => 'baz',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml, Yaml::PARSE_CONSTANT));
     }
@@ -1990,16 +1990,16 @@ public function testDeprecatedPhpConstantTagMappingKey()
             - !php/const:Symfony\Component\Yaml\Tests\B::BAR
         to: !php/const:Symfony\Component\Yaml\Tests\B::BAZ
 YAML;
-        $expected = array(
-            'transitions' => array(
-                'foo' => array(
-                    'from' => array(
+        $expected = [
+            'transitions' => [
+                'foo' => [
+                    'from' => [
                         'bar',
-                    ),
+                    ],
                     'to' => 'baz',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml, Yaml::PARSE_CONSTANT));
     }
@@ -2017,16 +2017,16 @@ public function testPhpConstantTagMappingKeyWithKeysCastToStrings()
             - !php/const 'Symfony\Component\Yaml\Tests\B::BAR'
         to: !php/const 'Symfony\Component\Yaml\Tests\B::BAZ'
 YAML;
-        $expected = array(
-            'transitions' => array(
-                'foo' => array(
-                    'from' => array(
+        $expected = [
+            'transitions' => [
+                'foo' => [
+                    'from' => [
                         'bar',
-                    ),
+                    ],
                     'to' => 'baz',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml, Yaml::PARSE_CONSTANT | Yaml::PARSE_KEYS_AS_STRINGS));
     }
@@ -2047,23 +2047,23 @@ public function testMergeKeysWhenMappingsAreParsedAsObjects()
     bar: ~
     <<: [*FOO, *BAR]
 YAML;
-        $expected = (object) array(
-            'foo' => (object) array(
+        $expected = (object) [
+            'foo' => (object) [
                 'bar' => 1,
-            ),
-            'bar' => (object) array(
+            ],
+            'bar' => (object) [
                 'baz' => 2,
                 'bar' => 1,
-            ),
-            'baz' => (object) array(
+            ],
+            'baz' => (object) [
                 'baz_foo' => 3,
                 'baz_bar' => 4,
-            ),
-            'foobar' => (object) array(
+            ],
+            'foobar' => (object) [
                 'bar' => null,
                 'baz' => 2,
-            ),
-        );
+            ],
+    
10000
    ];
 
         $this->assertEquals($expected, $this->parser->parse($yaml, Yaml::PARSE_OBJECT_FOR_MAP));
     }
@@ -2121,18 +2121,18 @@ public function testParseReferencesOnMergeKeys()
     d: quux
     <<: *quux
 YAML;
-        $expected = array(
-            'mergekeyrefdef' => array(
+        $expected = [
+            'mergekeyrefdef' => [
                 'a' => 'foo',
                 'b' => 'bar',
                 'c' => 'baz',
-            ),
-            'mergekeyderef' => array(
+            ],
+            'mergekeyderef' => [
                 'd' => 'quux',
                 'b' => 'bar',
                 'c' => 'baz',
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -2149,18 +2149,18 @@ public function testParseReferencesOnMergeKeysWithMappingsParsedAsObjects()
     d: quux
     <<: *quux
 YAML;
-        $expected = (object) array(
-            'mergekeyrefdef' => (object) array(
+        $expected = (object) [
+            'mergekeyrefdef' => (object) [
                 'a' => 'foo',
                 'b' => 'bar',
                 'c' => 'baz',
-            ),
-            'mergekeyderef' => (object) array(
+            ],
+            'mergekeyderef' => (object) [
                 'd' => 'quux',
                 'b' => 'bar',
                 'c' => 'baz',
-            ),
-        );
+            ],
+        ];
 
         $this->assertEquals($expected, $this->parser->parse($yaml, Yaml::PARSE_OBJECT_FOR_MAP));
     }
@@ -2189,7 +2189,7 @@ public function testDetectCircularReferences($yaml)
 
     public function circularReferenceProvider()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<YAML
 foo:
@@ -2198,7 +2198,7 @@ public function circularReferenceProvider()
         bar: foobar
         baz: *foo
 YAML;
-        $tests['sequence'] = array($yaml);
+        $tests['sequence'] = [$yaml];
 
         $yaml = <<<YAML
 foo: &foo
@@ -2206,7 +2206,7 @@ public function circularReferenceProvider()
         foobar: baz
         baz: *foo
 YAML;
-        $tests['mapping'] = array($yaml);
+        $tests['mapping'] = [$yaml];
 
         $yaml = <<<YAML
 foo: &foo
@@ -2214,7 +2214,7 @@ public function circularReferenceProvider()
         foobar: baz
         <<: *foo
 YAML;
-        $tests['mapping with merge key'] = array($yaml);
+        $tests['mapping with merge key'] = [$yaml];
 
         return $tests;
     }
@@ -2229,7 +2229,7 @@ public function testParseIndentedMappings($yaml, $expected)
 
     public function indentedMappingData()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<YAML
 foo:
@@ -2237,15 +2237,15 @@ public function indentedMappingData()
     # A comment
     baz: "foobaz"
 YAML;
-        $expected = array(
-            'foo' => array(
-                array(
+        $expected = [
+            'foo' => [
+                [
                     'bar' => 'foobar',
                     'baz' => 'foobaz',
-                ),
-            ),
-        );
-        $tests['comment line is first line in indented block'] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests['comment line is first line in indented block'] = [$yaml, $expected];
 
         $yaml = <<<YAML
 foo:
@@ -2253,42 +2253,42 @@ public function indentedMappingData()
         # comment
         baz: [1, 2, 3]
 YAML;
-        $expected = array(
-            'foo' => array(
-                array(
-                    'bar' => array(
-                        'baz' => array(1, 2, 3),
-                    ),
-                ),
-            ),
-        );
-        $tests['mapping value on new line starting with a comment line'] = array($yaml, $expected);
+        $expected = [
+            'foo' => [
+                [
+                    'bar' => [
+                        'baz' => [1, 2, 3],
+                    ],
+                ],
+            ],
+        ];
+        $tests['mapping value on new line starting with a comment line'] = [$yaml, $expected];
 
         $yaml = <<<YAML
 foo:
   -
     bar: foobar
 YAML;
-        $expected = array(
-            'foo' => array(
-                array(
+        $expected = [
+            'foo' => [
+                [
                     'bar' => 'foobar',
-                ),
-            ),
-        );
-        $tests['mapping in sequence starting on a new line'] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests['mapping in sequence starting on a new line'] = [$yaml, $expected];
 
         $yaml = <<<YAML
 foo:
 
     bar: baz
 YAML;
-        $expected = array(
-            'foo' => array(
+        $expected = [
+            'foo' => [
                 'bar' => 'baz',
-            ),
-        );
-        $tests['blank line at the beginning of an indented mapping value'] = array($yaml, $expected);
+            ],
+        ];
+        $tests['blank line at the beginning of an indented mapping value'] = [$yaml, $expected];
 
         return $tests;
     }
diff --git a/src/Symfony/Component/Yaml/Tests/YamlTest.php b/src/Symfony/Component/Yaml/Tests/YamlTest.php
index 3f6c2525f755..5a792c51160a 100644
--- a/src/Symfony/Component/Yaml/Tests/YamlTest.php
+++ b/src/Symfony/Component/Yaml/Tests/YamlTest.php
@@ -18,7 +18,7 @@ class YamlTest extends TestCase
 {
     public function testParseAndDump()
     {
-        $data = array('lorem' => 'ipsum', 'dolor' => 'sit');
+        $data = ['lorem' => 'ipsum', 'dolor' => 'sit'];
         $yml = Yaml::dump($data);
         $parsed = Yaml::parse($yml);
         $this->assertEquals($data, $parsed);
@@ -30,7 +30,7 @@ public function testParseAndDump()
      */
     public function testZeroIndentationThrowsException()
     {
-        Yaml::dump(array('lorem' => 'ipsum', 'dolor' => 'sit'), 2, 0);
+        Yaml::dump(['lorem' => 'ipsum', 'dolor' => 'sit'], 2, 0);
     }
 
     /**
@@ -39,6 +39,6 @@ public function testZeroIndentationThrowsException()
      */
     public function testNegativeIndentationThrowsException()
     {
-        Yaml::dump(array('lorem' => 'ipsum', 'dolor' => 'sit'), 2, -4);
+        Yaml::dump(['lorem' => 'ipsum', 'dolor' => 'sit'], 2, -4);
     }
 }

From ac9d6cff81574015b64a991118f23bf1fb29bfd6 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 11:05:08 +0100
Subject: [PATCH 034/103] fixed fixtures

---
 .../Component/Intl/Data/Bundle/Writer/PhpBundleWriter.php   | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Intl/Data/Bundle/Writer/PhpBundleWriter.php b/src/Symfony/Component/Intl/Data/Bundle/Writer/PhpBundleWriter.php
index 53d943dcfeda..2cd959fb7586 100644
--- a/src/Symfony/Component/Intl/Data/Bundle/Writer/PhpBundleWriter.php
+++ b/src/Symfony/Component/Intl/Data/Bundle/Writer/PhpBundleWriter.php
@@ -43,9 +43,11 @@ public function write($path, $locale, $data)
         });
 
         $data = var_export($data, true);
-        $data = preg_replace('/array \(/', 'array(', $data);
-        $data = preg_replace('/\n {1,10}array\(/', 'array(', $data);
+        $data = preg_replace('/array \(/', '[', $data);
+        $data = preg_replace('/\n {1,10}\[/', '[', $data);
         $data = preg_replace('/  /', '    ', $data);
+        $data = preg_replace('/\),$/m', '],', $data);
+        $data = preg_replace('/\)$/', ']', $data);
         $data = sprintf($template, $data);
 
         file_put_contents($path.'/'.$locale.'.php', $data);

From 0ba1acc82fe4fbaad1efdad50540bdf225f698b9 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 11:59:17 +0100
Subject: [PATCH 035/103] fixed CS on YAML fixtures

---
 src/Symfony/Component/Yaml/CHANGELOG.md       |   2 +-
 .../Yaml/Tests/Fixtures/YtsAnchorAlias.yml    |   4 +-
 .../Yaml/Tests/Fixtures/YtsBasicTests.yml     |  52 ++---
 .../Yaml/Tests/Fixtures/YtsBlockMapping.yml   |  14 +-
 .../Tests/Fixtures/YtsDocumentSeparator.yml   |   8 +-
 .../Yaml/Tests/Fixtures/YtsErrorTests.yml     |   2 +-
 .../Tests/Fixtures/YtsFlowCollections.yml     |  16 +-
 .../Yaml/Tests/Fixtures/YtsFoldedScalars.yml  |  26 +--
 .../Tests/Fixtures/YtsNullsAndEmpties.yml     |   8 +-
 .../Fixtures/YtsSpecificationExamples.yml     | 202 +++++++++---------
 .../Yaml/Tests/Fixtures/YtsTypeTransfers.yml  |  62 +++---
 .../Tests/Fixtures/booleanMappingKeys.yml     |   4 +-
 .../Yaml/Tests/Fixtures/escapedCharacters.yml |   8 +-
 .../Fixtures/legacyBooleanMappingKeys.yml     |   8 +-
 .../Tests/Fixtures/legacyNullMappingKey.yml   |   4 +-
 .../Yaml/Tests/Fixtures/nullMappingKey.yml    |   4 +-
 .../Tests/Fixtures/numericMappingKeys.yml     |   6 +-
 .../Yaml/Tests/Fixtures/sfComments.yml        |  14 +-
 .../Yaml/Tests/Fixtures/sfCompact.yml         | 108 +++++-----
 .../Yaml/Tests/Fixtures/sfMergeKey.yml        |  26 +--
 .../Yaml/Tests/Fixtures/sfObjects.yml         |   2 +-
 .../Yaml/Tests/Fixtures/sfQuotes.yml          |  10 +-
 .../Component/Yaml/Tests/Fixtures/sfTests.yml |  32 +--
 .../Tests/Fixtures/unindentedCollections.yml  |  14 +-
 24 files changed, 318 insertions(+), 318 deletions(-)

diff --git a/src/Symfony/Component/Yaml/CHANGELOG.md b/src/Symfony/Component/Yaml/CHANGELOG.md
index 1b07b239cd6e..fd41c9dd221e 100644
--- a/src/Symfony/Component/Yaml/CHANGELOG.md
+++ b/src/Symfony/Component/Yaml/CHANGELOG.md
@@ -113,7 +113,7 @@ CHANGELOG
  * Added support for customizing the dumped YAML string through an optional bit field:
 
    ```php
-   Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE | Yaml::DUMP_OBJECT);
+   Yaml::dump(['foo' => new A(), 'bar' => 1], 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE | Yaml::DUMP_OBJECT);
    ```
 
 3.0.0
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsAnchorAlias.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsAnchorAlias.yml
index 5f9c94275b7d..81b4129aa33e 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsAnchorAlias.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsAnchorAlias.yml
@@ -14,7 +14,7 @@ yaml: |
     - Oren
     - *showell
 php: |
-    array('Steve', 'Clark', 'Brian', 'Oren', 'Steve')
+    ['Steve', 'Clark', 'Brian', 'Oren', 'Steve']
 
 ---
 test: Alias of a Mapping
@@ -28,4 +28,4 @@ yaml: |
     - banana
     - *hello
 php: |
-    array(array('Meat'=>'pork', 'Starch'=>'potato'), 'banana', array('Meat'=>'pork', 'Starch'=>'potato'))
+    [['Meat'=>'pork', 'Starch'=>'potato'], 'banana', ['Meat'=>'pork', 'Starch'=>'potato']]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsBasicTests.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsBasicTests.yml
index dfd93021d18c..1a08d8ea9fdd 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsBasicTests.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsBasicTests.yml
@@ -9,7 +9,7 @@ yaml: |
     - banana
     - carrot
 php: |
-    array('apple', 'banana', 'carrot')
+    ['apple', 'banana', 'carrot']
 ---
 test: Sequence With Item Being Null In The Middle
 brief: |
@@ -21,7 +21,7 @@ yaml: |
     -
     - carrot
 php: |
-    array('apple', null, 'carrot')
+    ['apple', null, 'carrot']
 ---
 test: Sequence With Last Item Being Null
 brief: |
@@ -33,7 +33,7 @@ yaml: |
     - banana
     -
 php: |
-    array('apple', 'banana', null)
+    ['apple', 'banana', null]
 ---
 test: Nested Sequences
 brief: |
@@ -46,7 +46,7 @@ yaml: |
      - bar
      - baz
 php: |
-    array(array('foo', 'bar', 'baz'))
+    [['foo', 'bar', 'baz']]
 ---
 test: Mixed Sequences
 brief: |
@@ -61,7 +61,7 @@ yaml: |
     - banana
     - carrot
 php: |
-    array('apple', array('foo', 'bar', 'x123'), 'banana', 'carrot')
+    ['apple', ['foo', 'bar', 'x123'], 'banana', 'carrot']
 ---
 test: Deeply Nested Sequences
 brief: |
@@ -74,7 +74,7 @@ yaml: |
       - uno
       - dos
 php: |
-    array(array(array('uno', 'dos')))
+    [[['uno', 'dos']]]
 ---
 test: Simple Mapping
 brief: |
@@ -87,7 +87,7 @@ yaml: |
     foo: whatever
     bar: stuff
 php: |
-    array('foo' => 'whatever', 'bar' => 'stuff')
+    ['foo' => 'whatever', 'bar' => 'stuff']
 ---
 test: Sequence in a Mapping
 brief: |
@@ -98,7 +98,7 @@ yaml: |
      - uno
      - dos
 php: |
-    array('foo' => 'whatever', 'bar' => array('uno', 'dos'))
+    ['foo' => 'whatever', 'bar' => ['uno', 'dos']]
 ---
 test: Nested Mappings
 brief: |
@@ -110,14 +110,14 @@ yaml: |
      name: steve
      sport: baseball
 php: |
-    array(
+    [
       'foo' => 'whatever',
-      'bar' => array(
+      'bar' => [
          'fruit' => 'apple',
          'name' => 'steve',
          'sport' => 'baseball'
-       )
-    )
+      ]
+    ]
 ---
 test: Mixed Mapping
 brief: |
@@ -136,22 +136,22 @@ yaml: |
        perl: papers
        ruby: scissorses
 php: |
-    array(
+    [
       'foo' => 'whatever',
-      'bar' => array(
-        array(
+      'bar' => [
+        [
             'fruit' => 'apple',
             'name' => 'steve',
             'sport' => 'baseball'
-        ),
+        ],
         'more',
-        array(
+        [
             'python' => 'rocks',
             'perl' => 'papers',
             'ruby' => 'scissorses'
-        )
-      )
-    )
+        ]
+      ]
+    ]
 ---
 test: Mapping-in-Sequence Shortcut
 todo: true
@@ -163,7 +163,7 @@ yaml: |
      - work on YAML.py:
         - work on Store
 php: |
-    array(array('work on YAML.py' => array('work on Store')))
+    [['work on YAML.py' => ['work on Store']]]
 ---
 test: Sequence-in-Mapping Shortcut
 todo: true
@@ -177,7 +177,7 @@ yaml: |
      - '%.sourceforge.net'
      - '%.freepan.org'
 php: |
-     array('allow' => array('localhost', '%.sourceforge.net', '%.freepan.org'))
+     ['allow' => ['localhost', '%.sourceforge.net', '%.freepan.org']]
 ---
 todo: true
 test: Merge key
@@ -192,11 +192,11 @@ yaml: |
        <<:
          age: 38
 php: |
-     array(
+     [
        'mapping' =>
-       array(
+       [
          'name' => 'Joe',
          'job' => 'Accountant',
          'age' => 38
-       )
-     )
+       ]
+     ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsBlockMapping.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsBlockMapping.yml
index f7ca469b4079..1f3a2e544fa9 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsBlockMapping.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsBlockMapping.yml
@@ -5,7 +5,7 @@ brief: |
 yaml: |
     foo: bar
 php: |
-    array('foo' => 'bar')
+    ['foo' => 'bar']
 ---
 test: Multi Element Mapping
 brief: |
@@ -15,11 +15,11 @@ yaml: |
     white: walls
     blue: berries
 php: |
-    array(
+    [
      'red' => 'baron',
      'white' => 'walls',
      'blue' => 'berries',
-    )
+    ]
 ---
 test: Values aligned
 brief: |
@@ -30,11 +30,11 @@ yaml: |
     white: walls
     blue:  berries
 php: |
-    array(
+    [
      'red' => 'baron',
      'white' => 'walls',
      'blue' => 'berries',
-    )
+    ]
 ---
 test: Colons aligned
 brief: |
@@ -44,8 +44,8 @@ yaml: |
     white : walls
     blue  : berries
 php: |
-    array(
+    [
      'red' => 'baron',
      'white' => 'walls',
      'blue' => 'berries',
-    )
+    ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsDocumentSeparator.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsDocumentSeparator.yml
index d98810256ec2..67cb47adb5b6 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsDocumentSeparator.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsDocumentSeparator.yml
@@ -49,7 +49,7 @@ yaml: |
     foo: 1
     bar: 2
 php: |
-    array('foo' => 1, 'bar' => 2)
+    ['foo' => 1, 'bar' => 2]
 documents: 1
 
 ---
@@ -63,7 +63,7 @@ yaml: |
     foo: |
         ---
 php: |
-    array('foo' => "---\n")
+    ['foo' => "---\n"]
 
 ---
 test: Multiple Document Separators in Block
@@ -79,7 +79,7 @@ yaml: |
     bar: |
         fooness
 php: |
-    array(
+    [
        'foo' => "---\nfoo: bar\n---\nyo: baz\n",
        'bar' => "fooness\n"
-    )
+    ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsErrorTests.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsErrorTests.yml
index e8506fcb66bb..e8697f93157b 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsErrorTests.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsErrorTests.yml
@@ -22,4 +22,4 @@ yaml: |
     firstline: 1
     secondline: 2
 php: |
-  array('foo' => null, 'firstline' => 1, 'secondline' => 2)
+  ['foo' => null, 'firstline' => 1, 'secondline' => 2]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsFlowCollections.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsFlowCollections.yml
index 03090e4abc40..cc562cd9d164 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsFlowCollections.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsFlowCollections.yml
@@ -8,7 +8,7 @@ brief: >
 yaml: |
     seq: [ a, b, c ]
 php: |
-    array('seq' => array('a', 'b', 'c'))
+    ['seq' => ['a', 'b', 'c']]
 ---
 test: Simple Inline Hash
 brief: >
@@ -21,7 +21,7 @@ brief: >
 yaml: |
     hash: { name: Steve, foo: bar }
 php: |
-    array('hash' => array('name' => 'Steve', 'foo' => 'bar'))
+    ['hash' => ['name' => 'Steve', 'foo' => 'bar']]
 ---
 test: Multi-line Inline Collections
 todo: true
@@ -38,15 +38,15 @@ yaml: |
                 Python: python.org,
                 Perl: use.perl.org }
 php: |
-    array(
-      'languages' => array('Ruby', 'Perl', 'Python'),
-      'websites' => array(
+    [
+      'languages' => ['Ruby', 'Perl', 'Python'],
+      'websites' => [
         'YAML' => 'yaml.org',
         'Ruby' => 'ruby-lang.org',
         'Python' => 'python.org',
         'Perl' => 'use.perl.org'
-      )
-    )
+      ]
+    ]
 ---
 test: Commas in Values (not in the spec!)
 todo: true
@@ -57,4 +57,4 @@ brief: >
 yaml: |
     attendances: [ 45,123, 70,000, 17,222 ]
 php: |
-    array('attendances' => array(45123, 70000, 17222))
+    ['attendances' => [45123, 70000, 17222]]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsFoldedScalars.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsFoldedScalars.yml
index a14735a55a50..2895202a2aca 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsFoldedScalars.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsFoldedScalars.yml
@@ -12,7 +12,7 @@ yaml: |
         Foo
         Bar
 php: |
-    array('this' => "Foo\nBar\n")
+    ['this' => "Foo\nBar\n"]
 ---
 test: The '+' indicator
 brief: >
@@ -28,11 +28,11 @@ yaml: |
 
     dummy: value
 php: |
-    array(
+    [
         'normal' => "extra new lines not kept\n",
         'preserving' => "extra new lines are kept\n\n\n",
         'dummy' => 'value'
-    )
+    ]
 ---
 test: Three trailing newlines in literals
 brief: >
@@ -64,14 +64,14 @@ yaml: |
 
     same as "kept" above: "This has four newlines.\n\n\n\n"
 php: |
-    array(
+    [
       'clipped' => "This has one newline.\n",
       'same as "clipped" above' => "This has one newline.\n",
       'stripped' => 'This has no newline.',
       'same as "stripped" above' => 'This has no newline.',
       'kept' => "This has four newlines.\n\n\n\n",
       'same as "kept" above' => "This has four newlines.\n\n\n\n"
-    )
+    ]
 ---
 test: Extra trailing newlines with spaces
 todo: true
@@ -95,8 +95,8 @@ yaml: |
 
 
 php: |
-    array('this' => "Foo\n\n  \n",
-      'kept' => "Foo\n\n  \n" )
+    ['this' => "Foo\n\n  \n",
+      'kept' => "Foo\n\n  \n"]
 
 ---
 test: Folded Block in a Sequence
@@ -115,12 +115,12 @@ yaml: |
         hmm
     - dog
 php: |
-    array(
+    [
         'apple',
         'banana',
         "can't you see the beauty of yaml? hmm\n",
         'dog'
-    )
+    ]
 ---
 test: Folded Block as a Mapping Value
 brief: >
@@ -135,10 +135,10 @@ yaml: |
         by a knee injury.
     source: espn
 php: |
-    array(
+    [
         'quote' => "Mark McGwire's year was crippled by a knee injury.\n",
         'source' => 'espn'
-    )
+    ]
 ---
 test: Three trailing newlines in folded blocks
 brief: >
@@ -166,11 +166,11 @@ yaml: |
 
     same as "kept" above: "This has four newlines.\n\n\n\n"
 php: |
-    array(
+    [
       'clipped' => "This has one newline.\n",
       'same as "clipped" above' => "This has one newline.\n",
       'stripped' => 'This has no newline.',
       'same as "stripped" above' => 'This has no newline.',
       'kept' => "This has four newlines.\n\n\n\n",
       'same as "kept" above' => "This has four newlines.\n\n\n\n"
-    )
+    ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsNullsAndEmpties.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsNullsAndEmpties.yml
index 9a5300f2eff6..ea8e36ed089e 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsNullsAndEmpties.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsNullsAndEmpties.yml
@@ -6,7 +6,7 @@ brief: >
 yaml: |
     empty: []
 php: |
-    array('empty' => array())
+    ['empty' => []]
 ---
 test: Empty Mapping
 brief: >
@@ -15,19 +15,19 @@ brief: >
 yaml: |
     empty: {}
 php: |
-    array('empty' => array())
+    ['empty' => []]
 ---
 test: Empty Sequence as Entire Document
 yaml: |
     []
 php: |
-    array()
+    []
 ---
 test: Empty Mapping as Entire Document
 yaml: |
     {}
 php: |
-    array()
+    []
 ---
 test: Null as Document
 yaml: |
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
index 3f93c982bff2..4ecd828f0107 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
@@ -6,7 +6,7 @@ yaml: |
   - Sammy Sosa
   - Ken Griffey
 php: |
-  array('Mark McGwire', 'Sammy Sosa', 'Ken Griffey')
+  ['Mark McGwire', 'Sammy Sosa', 'Ken Griffey']
 ---
 test: Mapping of scalars to scalars
 spec: 2.2
@@ -15,7 +15,7 @@ yaml: |
   avg: 0.278
   rbi: 147
 php: |
-  array('hr' => 65, 'avg' => 0.278, 'rbi' => 147)
+  ['hr' => 65, 'avg' => 0.278, 'rbi' => 147]
 ---
 test: Mapping of scalars to sequences
 spec: 2.3
@@ -29,13 +29,13 @@ yaml: |
        - Chicago Cubs
        - Atlanta Braves
 php: |
-    array('american' =>
-        array( 'Boston Red Sox', 'Detroit Tigers',
-          'New York Yankees' ),
+    ['american' =>
+        ['Boston Red Sox', 'Detroit Tigers',
+          'New York Yankees'],
       'national' =>
-        array( 'New York Mets', 'Chicago Cubs',
-          'Atlanta Braves' )
-    )
+        ['New York Mets', 'Chicago Cubs',
+          'Atlanta Braves']
+    ]
 ---
 test: Sequence of mappings
 spec: 2.4
@@ -49,10 +49,10 @@ yaml: |
       hr:   63
       avg:  0.288
 php: |
-    array(
-      array('name' => 'Mark McGwire', 'hr' => 65, 'avg' => 0.278),
-      array('name' => 'Sammy Sosa', 'hr' => 63, 'avg' => 0.288)
-    )
+    [
+      ['name' => 'Mark McGwire', 'hr' => 65, 'avg' => 0.278],
+      ['name' => 'Sammy Sosa', 'hr' => 63, 'avg' => 0.288]
+    ]
 ---
 test: Legacy A5
 todo: true
@@ -134,11 +134,11 @@ yaml: |
   - [ Mark McGwire , 65 , 0.278 ]
   - [ Sammy Sosa   , 63 , 0.288 ]
 php: |
-  array(
-    array( 'name', 'hr', 'avg' ),
-    array( 'Mark McGwire', 65, 0.278 ),
-    array( 'Sammy Sosa', 63, 0.288 )
-  )
+  [
+    [ 'name', 'hr', 'avg' ],
+    [ 'Mark McGwire', 65, 0.278 ],
+    [ 'Sammy Sosa', 63, 0.288 ]
+  ]
 ---
 test: Mapping of mappings
 todo: true
@@ -150,12 +150,12 @@ yaml: |
       avg: 0.288
     }
 php: |
-  array(
+  [
     'Mark McGwire' =>
-      array( 'hr' => 65, 'avg' => 0.278 ),
+      [ 'hr' => 65, 'avg' => 0.278 ],
     'Sammy Sosa' =>
-      array( 'hr' => 63, 'avg' => 0.288 )
-  )
+      [ 'hr' => 63, 'avg' => 0.288 ]
+  ]
 ---
 test: Two documents in a stream each with a leading comment
 todo: true
@@ -208,10 +208,10 @@ yaml: |
     - Sammy Sosa
     - Ken Griffey
 php: |
-  array(
-    'hr' => array( 'Mark McGwire', 'Sammy Sosa' ),
-    'rbi' => array( 'Sammy Sosa', 'Ken Griffey' )
-  )
+  [
+    'hr' => [ 'Mark McGwire', 'Sammy Sosa' ],
+    'rbi' => [ 'Sammy Sosa', 'Ken Griffey' ]
+  ]
 ---
 test: Node for Sammy Sosa appears twice in this document
 spec: 2.10
@@ -225,12 +225,12 @@ yaml: |
       - *SS # Subsequent occurrence
       - Ken Griffey
 php: |
-   array(
+   [
       'hr' =>
-         array('Mark McGwire', 'Sammy Sosa'),
+         ['Mark McGwire', 'Sammy Sosa'],
       'rbi' =>
-         array('Sammy Sosa', 'Ken Griffey')
-   )
+         ['Sammy Sosa', 'Ken Griffey']
+   ]
 ---
 test: Mapping between sequences
 todo: true
@@ -297,20 +297,20 @@ yaml: |
   - item    : Big Shoes
     quantity: 1
 php: |
-  array (
-    array (
+  [
+    [
       'item' => 'Super Hoop',
       'quantity' => 1,
-    ),
-    array (
+    ],
+    [
       'item' => 'Basketball',
       'quantity' => 4,
-    ),
-    array (
+    ],
+    [
       'item' => 'Big Shoes',
       'quantity' => 1,
-    )
-  )
+    ]
+  ]
 perl: |
   [
      { item => 'Super Hoop', quantity => 1 },
@@ -462,11 +462,11 @@ yaml: |
      65 Home Runs
      0.278 Batting Average
 php: |
-  array(
+  [
     'name' => 'Mark McGwire',
     'accomplishment' => "Mark set a major league home run record in 1998.\n",
     'stats' => "65 Home Runs\n0.278 Batting Average\n"
-  )
+  ]
 ---
 test: Quoted scalars
 todo: true
@@ -512,11 +512,11 @@ yaml: |
   octal: 014
   hexadecimal: 0xC
 php: |
-  array(
+  [
     'canonical' => 12345,
     'octal' => 014,
     'hexadecimal' => 0xC
-  )
+  ]
 ---
 test: Decimal Integer
 deprecated: true
@@ -524,9 +524,9 @@ spec: 2.19
 yaml: |
   decimal: +12,345
 php: |
-  array(
+  [
     'decimal' => 12345.0,
-  )
+  ]
 ---
 # FIX: spec shows parens around -inf and NaN
 test: Floating point
@@ -538,13 +538,13 @@ yaml: |
   not a number: .NaN
   float as whole number: !!float 1
 php: |
-  array(
+  [
     'canonical' => 1230.15,
     'exponential' => 1230.15,
     'negative infinity' => log(0),
     'not a number' => -log(0),
     'float as whole number' => (float) 1
-  )
+  ]
 ---
 test: Fixed Floating point
 deprecated: true
@@ -552,9 +552,9 @@ spec: 2.20
 yaml: |
   fixed: 1,230.15
 php: |
-  array(
+  [
     'fixed' => 1230.15,
-  )
+  ]
 ---
 test: Timestamps
 todo: true
@@ -565,12 +565,12 @@ yaml: |
   spaced:  2001-12-14 21:59:43.10 -05:00
   date:   2002-12-14 # Time is noon UTC
 php: |
-  array(
+  [
     'canonical' => YAML::mktime( 2001, 12, 15, 2, 59, 43, 0.10 ),
     'iso8601' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
     'spaced' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
     'date' => Date.new( 2002, 12, 14 )
-  )
+  ]
 ---
 test: legacy Timestamps test
 todo: true
@@ -581,12 +581,12 @@ yaml: |
     spaced:  2001-12-14 21:59:43.00 -05:00
     date:   2002-12-14
 php: |
-   array(
+   [
      'canonical' => Time::utc( 2001, 12, 15, 2, 59, 43, 0 ),
      'iso8601' => YAML::mktime( 2001, 2, 28, 21, 59, 43, 0, "-05:00" ),
      'spaced' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0, "-05:00" ),
      'date' => Date.new( 2002, 12, 14 )
-   )
+   ]
 ---
 test: Various explicit families
 todo: true
@@ -754,20 +754,20 @@ yaml: |
     Backup contact is Nancy
     Billsmer @ 338-4338.
 php: |
-  array(
+  [
      'invoice' => 34843, 'date' => gmmktime(0, 0, 0, 1, 23, 2001),
      'bill-to' =>
-      array( 'given' => 'Chris', 'family' => 'Dumars', 'address' => array( 'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak', 'state' => 'MI', 'postal' => 48046 ) )
+      [ 'given' => 'Chris', 'family' => 'Dumars', 'address' => [ 'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak', 'state' => 'MI', 'postal' => 48046 ] ]
      , 'ship-to' =>
-      array( 'given' => 'Chris', 'family' => 'Dumars', 'address' => array( 'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak', 'state' => 'MI', 'postal' => 48046 ) )
+      [ 'given' => 'Chris', 'family' => 'Dumars', 'address' => [ 'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak', 'state' => 'MI', 'postal' => 48046 ] ]
      , 'product' =>
-       array(
-        array( 'sku' => 'BL394D', 'quantity' => 4, 'description' => 'Basketball', 'price' => 450.00 ),
-        array( 'sku' => 'BL4438H', 'quantity' => 1, 'description' => 'Super Hoop', 'price' => 2392.00 )
-      ),
+       [
+        [ 'sku' => 'BL394D', 'quantity' => 4, 'description' => 'Basketball', 'price' => 450.00 ],
+        [ 'sku' => 'BL4438H', 'quantity' => 1, 'description' => 'Super Hoop', 'price' => 2392.00 ]
+       ],
      'tax' => 251.42, 'total' => 4443.52,
      'comments' => "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.\n"
-  )
+  ]
 ---
 test: Log file
 todo: true
@@ -826,9 +826,9 @@ yaml: |
    # These are three throwaway comment
    # lines (the first line is empty).
 php: |
-   array(
+   [
      'this' => "contains three lines of text.\nThe third one starts with a\n# character. This isn't a comment.\n"
-   )
+   ]
 ---
 test: Document with a single value
 todo: true
@@ -878,11 +878,11 @@ yaml: |
    date    : 2001-01-23
    total   : 4443.52
 php: |
-   array(
+   [
       'invoice' => 34843,
       'date' => gmmktime(0, 0, 0, 1, 23, 2001),
       'total' => 4443.52
-   )
+   ]
 ---
 test: Single-line documents
 todo: true
@@ -934,7 +934,7 @@ yaml: |
    also int: ! "12"
    string: !!str 12
 php: |
-   array( 'integer' => 12, 'also int' => 12, 'string' => '12' )
+   [ 'integer' => 12, 'also int' => 12, 'string' => '12' ]
 ---
 test: Private types
 todo: true
@@ -966,7 +966,7 @@ yaml: |
   # The URI is 'tag:yaml.org,2002:str'
   - !!str a Unicode string
 php: |
-  array( 'a Unicode string' )
+  [ 'a Unicode string' ]
 ---
 test: Type family under perl.yaml.org
 todo: true
@@ -1039,9 +1039,9 @@ yaml: |
    repeated use of this value.
   alias : *A001
 php: |
-  array( 'anchor' => 'This scalar has an anchor.',
+  [ 'anchor' => 'This scalar has an anchor.',
     'override' => "The alias node below is a repeated use of this value.\n",
-    'alias' => "The alias node below is a repeated use of this value.\n" )
+    'alias' => "The alias node below is a repeated use of this value.\n"]
 ---
 test: Flow and block formatting
 todo: true
@@ -1152,12 +1152,12 @@ yaml: |
    redundant: |2
      This value is indented 2 spaces.
 php: |
-   array(
+   [
       'leading spaces' => "    This value starts with four spaces.\n",
       'leading line break' => "\nThis value starts with a line break.\n",
       'leading comment indicator' => "# first line starts with a\n# character.\n",
       'redundant' => "This value is indented 2 spaces.\n"
-   )
+   ]
 ---
 test: Chomping and keep modifiers
 yaml: |
@@ -1176,14 +1176,14 @@ yaml: |
 
     same as "kept" above: "This has two newlines.\n\n"
 php: |
-    array(
+    [
       'clipped' => "This has one newline.\n",
       'same as "clipped" above' => "This has one newline.\n",
       'stripped' => 'This has no newline.',
       'same as "stripped" above' => 'This has no newline.',
       'kept' => "This has two newlines.\n\n",
       'same as "kept" above' => "This has two newlines.\n\n"
-    )
+    ]
 ---
 test: Literal combinations
 todo: true
@@ -1221,7 +1221,7 @@ yaml: |
 
    both are equal to: "  This has no newline."
 php: |
-   array(
+   [
      'empty' => '',
      'literal' => "The \\ ' \" characters may be\nfreely used. Leading white\n   space " +
        "is significant.\n\nLine breaks are significant.\nThus this value contains one\n" +
@@ -1232,7 +1232,7 @@ php: |
      'indented and chomped' => '  This has no newline.',
      'also written as' => '  This has no newline.',
      'both are equal to' => '  This has no newline.'
-   )
+   [
 ---
 test: Folded combinations
 todo: true
@@ -1288,7 +1288,7 @@ yaml: |
    # Explicit comments may follow
    # but must be less indented.
 php: |
-   array(
+   [
      'empty' => '',
      'one paragraph' => 'Line feeds are converted to spaces, so this value'.
        " contains no line breaks except for the final one.\n",
@@ -1300,7 +1300,7 @@ php: |
      'above is equal to' => "This is a folded paragraph followed by a list:\n".
        " * first entry\n * second entry\nFollowed by another folded paragraph, ".
        "another list:\n\n * first entry\n\n * second entry\n\nAnd a final folded paragraph.\n"
-   )
+   ]
 ---
 test: Single quotes
 todo: true
@@ -1315,13 +1315,13 @@ yaml: |
          line break'
    is same as: "this contains six spaces\nand one line break"
 php: |
-   array(
+   [
      'empty' => '',
      'second' => '! : \\ etc. can be used freely.',
      'third' => "a single quote ' must be escaped.",
      'span' => "this contains six spaces\nand one line break",
      'is same as' => "this contains six spaces\nand one line break"
-   )
+   ]
 ---
 test: Double quotes
 todo: true
@@ -1335,14 +1335,14 @@ yaml: |
          spaces"
    is equal to: "this contains four  spaces"
 php: |
-   array(
+   [
      'empty' => '',
      'second' => '! : etc. can be used freely.',
      'third' => 'a " or a \\ must be escaped.',
      'fourth' => "this value ends with an LF.\n",
      'span' => "this contains four  spaces",
      'is equal to' => "this contains four  spaces"
-   )
+   ]
 ---
 test: Unquoted strings
 todo: true
@@ -1371,7 +1371,7 @@ yaml: |
    note: { one-line keys: but multi-line values }
 
 php: |
-   array(
+   [
      'first' => 'There is no unquoted empty string.',
      'second' => 12,
      'third' => '12',
@@ -1379,7 +1379,7 @@ php: |
      'indicators' => "this has no comments. #:foo and bar# are both text.",
      'flow' => [ 'can span lines', 'like this' ],
      'note' => { 'one-line keys' => 'but multi-line values' }
-   )
+   ]
 ---
 test: Spanning sequences
 todo: true
@@ -1393,11 +1393,11 @@ yaml: |
      - one
      - two
 php: |
-   array(
+   [
      'flow' => [ 'one', 'two' ],
      'spanning' => [ 'one', 'two' ],
      'block' => [ 'one', 'two' ]
-   )
+   ]
 ---
 test: Flow mappings
 yaml: |
@@ -1408,10 +1408,10 @@ yaml: |
        one: 1
        two: 2
 php: |
-   array(
-     'flow' => array( 'one' => 1, 'two' => 2 ),
-     'block' => array( 'one' => 1, 'two' => 2 )
-   )
+   [
+     'flow' => [ 'one' => 1, 'two' => 2 ],
+     'block' => [ 'one' => 1, 'two' => 2 ]
+   ]
 ---
 test: Representations of 12
 todo: true
@@ -1433,7 +1433,7 @@ yaml: |
    - foo/bar
    - /a.*b/
 php: |
-   array( 12, '12', '12', '12', '12', '/foo/bar', 'd:/foo/bar', 'foo/bar', '/a.*b/' )
+   [ 12, '12', '12', '12', '12', '/foo/bar', 'd:/foo/bar', 'foo/bar', '/a.*b/' ]
 ---
 test: "Null"
 todo: true
@@ -1455,12 +1455,12 @@ yaml: |
          only two with values.
 
 php: |
-   array (
+   [
      'canonical' => null,
      'english' => null,
-     'sparse' => array( null, '2nd entry', null, '4th entry', null ]),
+     'sparse' => [ null, '2nd entry', null, '4th entry', null ]],
      'four' => 'This mapping has five keys, only two with values.'
-   )
+   ]
 ---
 test: Omap
 todo: true
@@ -1525,29 +1525,29 @@ yaml: |
    octal: 014
    hexadecimal: 0xC
 php: |
-   array(
+   [
      'canonical' => 12345,
      'octal' => 12,
      'hexadecimal' => 12
-   )
+   ]
 ---
 test: Decimal
 deprecated: true
 yaml: |
    decimal: +12,345
 php: |
-   array(
+   [
      'decimal' => 12345.0,
-   )
+   ]
 ---
 test: Fixed Float
 deprecated: true
 yaml: |
    fixed: 1,230.15
 php: |
-  array(
+  [
     'fixed' => 1230.15,
-  )
+  ]
 ---
 test: Float
 yaml: |
@@ -1556,12 +1556,12 @@ yaml: |
    negative infinity: -.inf
    not a number: .NaN
 php: |
-  array(
+  [
     'canonical' => 1230.15,
     'exponential' => 1230.15,
     'negative infinity' => log(0),
     'not a number' => -log(0)
-  )
+  ]
 ---
 test: Timestamp
 todo: true
@@ -1571,12 +1571,12 @@ yaml: |
    space separated: 2001-12-14 21:59:43.10 -05:00
    date (noon UTC): 2002-12-14
 ruby: |
-   array(
+   [
      'canonical' => YAML::mktime( 2001, 12, 15, 2, 59, 43, 0.10 ),
      'valid iso8601' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
      'space separated' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
      'date (noon UTC)' => Date.new( 2002, 12, 14 )
-   )
+   ]
 ---
 test: Binary
 todo: true
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsTypeTransfers.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsTypeTransfers.yml
index dea0be010b58..e96b553623f2 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsTypeTransfers.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsTypeTransfers.yml
@@ -25,14 +25,14 @@ yaml: |
     - No, I mean, "And what about Yaml?"
     - Oh, oh yeah. Uh.. Yaml for Ruby.
 php: |
-    array(
+    [
       "What's Yaml?",
       "It's for writing data structures in plain text.",
       "And?",
       "And what? That's not good enough for you?",
       "No, I mean, \"And what about Yaml?\"",
       "Oh, oh yeah. Uh.. Yaml for Ruby."
-    )
+    ]
 ---
 test: Indicators in Strings
 brief: >
@@ -43,11 +43,11 @@ yaml: |
     same for the pound sign: here we have it#in a string
     the comma can, honestly, be used in most cases: [ but not in, inline collections ]
 php: |
-    array(
+    [
       'the colon followed by space is an indicator' => 'but is a string:right here',
       'same for the pound sign' => 'here we have it#in a string',
-      'the comma can, honestly, be used in most cases' => array('but not in', 'inline collections')
-    )
+      'the comma can, honestly, be used in most cases' => ['but not in', 'inline collections']
+    ]
 ---
 test: Forcing Strings
 brief: >
@@ -57,10 +57,10 @@ yaml: |
     date string: !!str 2001-08-01
     number string: !!str 192
 php: |
-    array(
+    [
       'date string' => '2001-08-01',
       'number string' => '192'
-    )
+    ]
 ---
 test: Single-quoted Strings
 brief: >
@@ -75,12 +75,12 @@ yaml: |
     why do i hate them?: 'it''s very hard to explain'
     entities: '&pound; me'
 php: |
-    array(
+    [
       'all my favorite symbols' => '#:!/%.)',
       'a few i hate' => '&(*',
       'why do i hate them?' => 'it\'s very hard to explain',
       'entities' => '&pound; me'
-    )
+    ]
 ---
 test: Double-quoted Strings
 brief: >
@@ -90,9 +90,9 @@ brief: >
 yaml: |
     i know where i want my line breaks: "one here\nand another here\n"
 php: |
-    array(
+    [
       'i know where i want my line breaks' => "one here\nand another here\n"
-    )
+    ]
 ---
 test: Multi-line Quoted Strings
 todo: true
@@ -106,10 +106,10 @@ yaml: |
       let it go on and on to other lines
       until i end it with a quote."
 php: |
-    array('i want a long string' => "so i'm going to ".
+    ['i want a long string' => "so i'm going to ".
          "let it go on and on to other lines ".
          "until i end it with a quote."
-    )
+    ]
 
 ---
 test: Plain scalars
@@ -128,7 +128,7 @@ yaml: |
     - This would impair my skiing ability somewhat for the
       duration, as can be imagined.
 php: |
-    array(
+    [
       "My little toe is broken in two places;",
       "I'm crazy to have skied this way;",
       "I'm not the craziest he's seen, since there was always ".
@@ -139,7 +139,7 @@ php: |
       "He's going to put my foot in plaster for a month;",
       "This would impair my skiing ability somewhat for the duration, ".
          "as can be imagined."
-    )
+    ]
 ---
 test: 'Null'
 brief: >
@@ -149,11 +149,11 @@ yaml: |
     hosted by: Bob and David
     date of next season: ~
 php: |
-    array(
+    [
       'name' => 'Mr. Show',
       'hosted by' => 'Bob and David',
       'date of next season' => null
-    )
+    ]
 ---
 test: Boolean
 brief: >
@@ -162,10 +162,10 @@ yaml: |
     Is Gus a Liar?: true
     Do I rely on Gus for Sustenance?: false
 php: |
-    array(
+    [
       'Is Gus a Liar?' => true,
       'Do I rely on Gus for Sustenance?' => false
-    )
+    ]
 ---
 test: Integers
 dump_skip: true
@@ -177,10 +177,10 @@ yaml: |
     zero: 0
     simple: 12
 php: |
-    array(
+    [
       'zero' => 0,
       'simple' => 12,
-    )
+    ]
 ---
 test: Positive Big Integer
 deprecated: true
@@ -192,9 +192,9 @@ brief: >
 yaml: |
     one-thousand: 1,000
 php: |
-    array(
+    [
       'one-thousand' => 1000.0,
-    )
+    ]
 ---
 test: Negative Big Integer
 deprecated: true
@@ -206,9 +206,9 @@ brief: >
 yaml: |
     negative one-thousand: -1,000
 php: |
-    array(
+    [
       'negative one-thousand' => -1000.0
-    )
+    ]
 ---
 test: Floats
 dump_skip: true
@@ -220,10 +220,10 @@ yaml: |
      a simple float: 2.00
      scientific notation: 1.00009e+3
 php: |
-     array(
+     [
        'a simple float' => 2.0,
        'scientific notation' => 1000.09
-     )
+     ]
 ---
 test: Larger Float
 dump_skip: true
@@ -235,9 +235,9 @@ brief: >
 yaml: |
      larger float: 1,000.09
 php: |
-     array(
+     [
        'larger float' => 1000.09,
-     )
+     ]
 ---
 test: Time
 todo: true
@@ -250,10 +250,10 @@ yaml: |
     iso8601: 2001-12-14t21:59:43.10-05:00
     space separated: 2001-12-14 21:59:43.10 -05:00
 php: |
-    array(
+    [
       'iso8601' => mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
       'space separated' => mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" )
-    )
+    ]
 ---
 test: Date
 todo: true
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/booleanMappingKeys.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/booleanMappingKeys.yml
index 26799e8e7bff..88287f1b9f6a 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/booleanMappingKeys.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/booleanMappingKeys.yml
@@ -5,7 +5,7 @@ yaml: |
   true: true
   false: false
 php: |
-  array(
+  [
     'true' => true,
     'false' => false,
-  )
+  ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/escapedCharacters.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/escapedCharacters.yml
index cc0356d36aec..87d352db118d 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/escapedCharacters.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/escapedCharacters.yml
@@ -142,14 +142,14 @@ test: Double quotes with a line feed
 yaml: |
    { double: "some value\n \"some quoted string\" and 'some single quotes one'" }
 php: |
-    array(
+    [
         'double' => "some value\n \"some quoted string\" and 'some single quotes one'"
-    )
+    ]
 ---
 test: Backslashes
 yaml: |
     { single: 'foo\Var', no-quotes: foo\Var, double: "foo\\Var" }
 php: |
-    array(
+    [
         'single' => 'foo\Var', 'no-quotes' => 'foo\Var', 'double' => 'foo\Var'
-    )
+    ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/legacyBooleanMappingKeys.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/legacyBooleanMappingKeys.yml
index 5e8d091707d5..db950165e364 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/legacyBooleanMappingKeys.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/legacyBooleanMappingKeys.yml
@@ -5,10 +5,10 @@ yaml: |
   true: true
   false: false
 php: |
-  array(
+  [
     1 => true,
     0 => false,
-  )
+  ]
 ---
 test: Boolean
 yaml: |
@@ -16,8 +16,8 @@ yaml: |
    logical:  true
    answer: false
 php: |
-   array(
+   [
      false => 'used as key',
      'logical' => true,
      'answer' => false
-   )
+   ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/legacyNullMappingKey.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/legacyNullMappingKey.yml
index 551a6205e137..14f93c2d1b6c 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/legacyNullMappingKey.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/legacyNullMappingKey.yml
@@ -4,6 +4,6 @@ spec: 2.21
 yaml: |
   null: ~
 php: |
-  array(
+  [
     '' => null,
-  )
+  ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/nullMappingKey.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/nullMappingKey.yml
index 7dcadc729968..cd90f7b4cbf6 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/nullMappingKey.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/nullMappingKey.yml
@@ -4,6 +4,6 @@ spec: 2.21
 yaml: |
   null: ~
 php: |
-  array(
+  [
     'null' => null,
-  )
+  ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/numericMappingKeys.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/numericMappingKeys.yml
index 9cfb7713a5c2..246447e4d44a 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/numericMappingKeys.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/numericMappingKeys.yml
@@ -6,7 +6,7 @@ yaml: |
   1: foo
   0: bar
 php: |
-  array(1 => 'foo', 0 => 'bar')
+  [1 => 'foo', 0 => 'bar']
 ---
 test: Integers as Map Keys
 brief: >
@@ -16,8 +16,8 @@ yaml: |
     2: two
     3: three
 php: |
-    array(
+    [
         1 => 'one',
         2 => 'two',
         3 => 'three'
-    )
+    ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/sfComments.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/sfComments.yml
index b72a9b699656..af3ab38597a9 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/sfComments.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/sfComments.yml
@@ -11,7 +11,7 @@ yaml: |
     ex6: foo#foo # comment here
     ex7: foo 	# ignore me # and me
 php: |
-    array('ex1' => 'foo # bar', 'ex2' => 'foo # bar', 'ex3' => 'foo # bar', 'ex4' => 'foo', 'ex5' => 'foo', 'ex6' => 'foo#foo', 'ex7' => 'foo')
+    ['ex1' => 'foo # bar', 'ex2' => 'foo # bar', 'ex3' => 'foo # bar', 'ex4' => 'foo', 'ex5' => 'foo', 'ex6' => 'foo#foo', 'ex7' => 'foo']
 ---
 test: Comments in the middle
 brief: >
@@ -24,7 +24,7 @@ yaml: |
     # some comment
     # some comment
 php: |
-    array('foo' => array('bar' => 'foo'))
+    ['foo' => ['bar' => 'foo']]
 ---
 test: Comments on a hash line
 brief: >
@@ -33,7 +33,7 @@ yaml: |
     foo:   # a comment
       foo: bar # a comment
 php: |
-    array('foo' => array('foo' => 'bar'))
+    ['foo' => ['foo' => 'bar']]
 ---
 test: 'Value starting with a #'
 brief: >
@@ -41,7 +41,7 @@ brief: >
 yaml: |
     foo:   '#bar'
 php: |
-    array('foo' => '#bar')
+    ['foo' => '#bar']
 ---
 test: Document starting with a comment and a separator
 brief: >
@@ -51,7 +51,7 @@ yaml: |
     ---
     foo: bar # a comment
 php: |
-    array('foo' => 'bar')
+    ['foo' => 'bar']
 ---
 test: Comment containing a colon on a hash line
 brief: >
@@ -65,7 +65,7 @@ brief: >
     'Hash key containing a #'
 yaml: 'foo#bar: baz'
 php: |
-    array('foo#bar' => 'baz')
+    ['foo#bar' => 'baz']
 ---
 test: 'Hash key ending with a space and a #'
 brief: >
@@ -73,4 +73,4 @@ brief: >
 yaml: |
     'foo #': baz
 php: |
-    array('foo #' => 'baz')
+    ['foo #' => 'baz']
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/sfCompact.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/sfCompact.yml
index 1339d23a6305..8cadae2c1a0a 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/sfCompact.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/sfCompact.yml
@@ -13,22 +13,22 @@ yaml: |
       nick: Biggies
     quantity: 1
 php: |
-  array (
-    array (
+  [
+    [
       'item' => 'Super Hoop',
-    ),
-    array (
+    ],
+    [
       'item' => 'Basketball',
       'quantity' => 1,
-    ),
-    array (
-      'item' => array(
+    ],
+    [
+      'item' => [
         'name' => 'Big Shoes',
         'nick' => 'Biggies'
-      ),
+      ],
       'quantity' => 1
-    )
-  )
+    ]
+  ]
 ---
 test: Compact notation combined with inline notation
 brief: |
@@ -39,18 +39,18 @@ yaml: |
     - { item: Super Hoop, quantity: 1 }
     - [ Basketball, Big Shoes ]
 php: |
-  array (
-    'items' => array (
-      array (
+  [
+    'items' => [
+      [
         'item' => 'Super Hoop',
         'quantity' => 1,
-      ),
-      array (
+      ],
+      [
         'Basketball',
         'Big Shoes'
-      )
-    )
-  )
+      ]
+      ]
+    ]
 --- %YAML:1.0
 test: Compact notation
 brief: |
@@ -66,22 +66,22 @@ yaml: |
       nick: Biggies
     quantity: 1
 php: |
-  array (
-    array (
+  [
+    [
       'item' => 'Super Hoop',
-    ),
-    array (
+    ],
+    [
       'item' => 'Basketball',
       'quantity' => 1,
-    ),
-    array (
-      'item' => array(
+    ],
+    [
+      'item' => [
         'name' => 'Big Shoes',
         'nick' => 'Biggies'
-      ),
+      ],
       'quantity' => 1
-    )
-  )
+    ]
+  ]
 ---
 test: Compact notation combined with inline notation
 brief: |
@@ -92,18 +92,18 @@ yaml: |
     - { item: Super Hoop, quantity: 1 }
     - [ Basketball, Big Shoes ]
 php: |
-  array (
-    'items' => array (
-      array (
+  [
+    'items' => [
+      [
         'item' => 'Super Hoop',
         'quantity' => 1,
-      ),
-      array (
+      ],
+      [
         'Basketball',
         'Big Shoes'
-      )
-    )
-  )
+      ]
+    ]
+  ]
 --- %YAML:1.0
 test: Compact notation
 brief: |
@@ -119,22 +119,22 @@ yaml: |
       nick: Biggies
     quantity: 1
 php: |
-  array (
-    array (
+  [
+    [
       'item' => 'Super Hoop',
-    ),
-    array (
+    ],
+    [
       'item' => 'Basketball',
       'quantity' => 1,
-    ),
-    array (
-      'item' => array(
+    ],
+    [
+      'item' => [
         'name' => 'Big Shoes',
         'nick' => 'Biggies'
-      ),
+      ],
       'quantity' => 1
-    )
-  )
+    ]
+  ]
 ---
 test: Compact notation combined with inline notation
 brief: |
@@ -145,15 +145,15 @@ yaml: |
     - { item: Super Hoop, quantity: 1 }
     - [ Basketball, Big Shoes ]
 php: |
-  array (
-    'items' => array (
-      array (
+  [
+    'items' => [
+      [
         'item' => 'Super Hoop',
         'quantity' => 1,
-      ),
-      array (
+      ],
+      [
         'Basketball',
         'Big Shoes'
-      )
-    )
-  )
+      ]
+    ]
+  ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/sfMergeKey.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/sfMergeKey.yml
index 83264cfab819..af787ae435c2 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/sfMergeKey.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/sfMergeKey.yml
@@ -46,16 +46,16 @@ yaml: |
     head_inline: &head_inline { <<: [ *foo , *dong , *foo2 ] }
     recursive_inline: { <<: *head_inline, c: { <<: *foo2 } }
 php: |
-    array(
-        'foo' => array('a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull'),
-        'bar' => array('a' => 'before', 'd' => 'other', 'e' => null, 'b' => 'new', 'c' => array('foo' => 'bar', 'bar' => 'foo'), 'x' => 'Oren'),
-        'bar_inline' => array('a' => 'before', 'd' => 'other', 'b' => 'new', 'c' => array('foo' => 'bar', 'bar' => 'foo'), 'e' => 'notnull', 'x' => 'Oren'),
-        'foo2' => array('a' => 'Ballmer'),
-        'ding' => array('fi', 'fei', 'fo', 'fam'),
-        'check' => array('a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam', 'isit' => 'tested'),
-        'head' => array('a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'),
-        'taz' => array('a' => 'Steve', 'w' => array('p' => 1234)),
-        'nested' => array('a' => 'Steve', 'w' => array('p' => 12345), 'd' => 'Doug', 'z' => array('p' => 12345)),
-        'head_inline' => array('a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'),
-        'recursive_inline' => array('a' => 'Steve', 'b' => 'Clark', 'c' => array('a' => 'Ballmer'), 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'),
-    )
+    [
+        'foo' => ['a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull'],
+        'bar' => ['a' => 'before', 'd' => 'other', 'e' => null, 'b' => 'new', 'c' => ['foo' => 'bar', 'bar' => 'foo'], 'x' => 'Oren'],
+        'bar_inline' => ['a' => 'before', 'd' => 'other', 'b' => 'new', 'c' => ['foo' => 'bar', 'bar' => 'foo'], 'e' => 'notnull', 'x' => 'Oren'],
+        'foo2' => ['a' => 'Ballmer'],
+        'ding' => ['fi', 'fei', 'fo', 'fam'],
+        'check' => ['a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam', 'isit' => 'tested'],
+        'head' => ['a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'],
+        'taz' => ['a' => 'Steve', 'w' => ['p' => 1234]],
+        'nested' => ['a' => 'Steve', 'w' => ['p' => 12345], 'd' => 'Doug', 'z' => ['p' => 12345]],
+        'head_inline' => ['a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'],
+        'recursive_inline' => ['a' => 'Steve', 'b' => 'Clark', 'c' => ['a' => 'Ballmer'], 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'],
+    ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/sfObjects.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/sfObjects.yml
index ee124b2446eb..144615f2a802 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/sfObjects.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/sfObjects.yml
@@ -8,4 +8,4 @@ yaml: |
     ex3: 'foo # bar' # comment
     ex4: foo # comment
 php: |
-    array('ex1' => 'foo # bar', 'ex2' => 'foo # bar', 'ex3' => 'foo # bar', 'ex4' => 'foo')
+    ['ex1' => 'foo # bar', 'ex2' => 'foo # bar', 'ex3' => 'foo # bar', 'ex4' => 'foo']
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/sfQuotes.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/sfQuotes.yml
index 7c60baec97ce..c8326fdb2067 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/sfQuotes.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/sfQuotes.yml
@@ -5,7 +5,7 @@ brief: >
 yaml: |
     foo: '| bar'
 php: |
-    array('foo' => '| bar')
+    ['foo' => '| bar']
 ---
 test: A key can be a quoted string
 brief: >
@@ -19,15 +19,15 @@ yaml: |
     "foo4: ": bar
     foo5: { "foo \" bar: ": bar, 'foo '' bar: ': bar }
 php: |
-    array(
+    [
       'foo1' => 'bar',
       'foo2' => 'bar',
       'foo " bar' => 'bar',
       'foo \' bar' => 'bar',
       'foo3: ' => 'bar',
       'foo4: ' => 'bar',
-      'foo5' => array(
+      'foo5' => [
         'foo " bar: ' => 'bar',
         'foo \' bar: ' => 'bar',
-      ),
-    )
+      ],
+    ]
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/sfTests.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/sfTests.yml
index 2a0b9c8741cc..2ea417a7289b 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/sfTests.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/sfTests.yml
@@ -5,19 +5,19 @@ brief: >
 yaml: |
     stripped_title: { name: "foo bar", help: "bar foo" }
 php: |
-    array('stripped_title' => array('name' => 'foo bar', 'help' => 'bar foo'))
+    ['stripped_title' => ['name' => 'foo bar', 'help' => 'bar foo']]
 ---
 test: Empty sequence
 yaml: |
     foo: [ ]
 php: |
-    array('foo' => array())
+    ['foo' => []]
 ---
 test: Empty value
 yaml: |
     foo:
 php: |
-    array('foo' => null)
+    ['foo' => null]
 ---
 test: Inline string parsing
 brief: >
@@ -25,7 +25,7 @@ brief: >
 yaml: |
     test: ['complex: string', 'another [string]']
 php: |
-    array('test' => array('complex: string', 'another [string]'))
+    ['test' => ['complex: string', 'another [string]']]
 ---
 test: Boolean
 brief: >
@@ -40,7 +40,7 @@ yaml: |
     - 'null'
     - '~'
 php: |
-    array(
+    [
       false,
       true,
       null,
@@ -49,7 +49,7 @@ php: |
       'true',
       'null',
       '~',
-    )
+    ]
 ---
 test: Empty lines in literal blocks
 brief: >
@@ -63,7 +63,7 @@ yaml: |
         
       bar
 php: |
-  array('foo' => array('bar' => "foo\n\n\n  \nbar\n"))
+  ['foo' => ['bar' => "foo\n\n\n  \nbar\n"]]
 ---
 test: Empty lines in folded blocks
 brief: >
@@ -77,7 +77,7 @@ yaml: |
       
       bar
 php: |
-  array('foo' => array('bar' => "\nfoo\n\nbar\n"))
+  ['foo' => ['bar' => "\nfoo\n\nbar\n"]]
 ---
 test: IP addresses
 brief: >
@@ -85,7 +85,7 @@ brief: >
 yaml: |
   foo: 10.0.0.2
 php: |
-  array('foo' => '10.0.0.2')
+  ['foo' => '10.0.0.2']
 ---
 test: A sequence with an embedded mapping
 brief: >
@@ -94,28 +94,28 @@ yaml: |
   - foo
   - bar: { bar: foo }
 php: |
-  array('foo', array('bar' => array('bar' => 'foo')))
+  ['foo', ['bar' => ['bar' => 'foo']]]
 ---
 test: Octal
 brief: as in spec example 2.19, octal value is converted
 yaml: |
   foo: 0123
 php: |
-  array('foo' => 83)
+  ['foo' => 83]
 ---
 test: Octal strings
 brief: Octal notation in a string must remain a string
 yaml: |
   foo: "0123"
 php: |
-  array('foo' => '0123')
+  ['foo' => '0123']
 ---
 test: Octal strings
 brief: Octal notation in a string must remain a string
 yaml: |
   foo: '0123'
 php: |
-  array('foo' => '0123')
+  ['foo' => '0123']
 ---
 test: Octal strings
 brief: Octal notation in a string must remain a string
@@ -123,18 +123,18 @@ yaml: |
   foo: |
     0123
 php: |
-  array('foo' => "0123\n")
+  ['foo' => "0123\n"]
 ---
 test: Document as a simple hash
 brief: Document as a simple hash
 yaml: |
   { foo: bar }
 php: |
-  array('foo' => 'bar')
+  ['foo' => 'bar']
 ---
 test: Document as a simple array
 brief: Document as a simple array
 yaml: |
   [ foo, bar ]
 php: |
-  array('foo', 'bar')
+  ['foo', 'bar']
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/unindentedCollections.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/unindentedCollections.yml
index 0c96108e9911..c85952df47f3 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/unindentedCollections.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/unindentedCollections.yml
@@ -8,7 +8,7 @@ yaml: |
     - item2
     - item3
 php: |
-    array('collection' => array('item1', 'item2', 'item3'))
+    ['collection' => ['item1', 'item2', 'item3']]
 ---
 test: Nested unindented collection (two levels)
 brief: >
@@ -20,7 +20,7 @@ yaml: |
         - b
         - c
 php: |
-    array('collection' => array('key' => array('a', 'b', 'c')))
+    ['collection' => ['key' => ['a', 'b', 'c']]]
 ---
 test: Nested unindented collection (three levels)
 brief: >
@@ -33,7 +33,7 @@ yaml: |
             - two
             - three
 php: |
-    array('collection' => array('key' => array('subkey' => array('one', 'two', 'three'))))
+    ['collection' => ['key' => ['subkey' => ['one', 'two', 'three']]]]
 ---
 test: Key/value after unindented collection (1)
 brief: >
@@ -46,7 +46,7 @@ yaml: |
         - c
     foo: bar
 php: |
-    array('collection' => array('key' => array('a', 'b', 'c')), 'foo' => 'bar')
+    ['collection' => ['key' => ['a', 'b', 'c']], 'foo' => 'bar']
 ---
 test: Key/value after unindented collection (at the same level)
 brief: >
@@ -59,7 +59,7 @@ yaml: |
         - c
         foo: bar
 php: |
-    array('collection' => array('key' => array('a', 'b', 'c'), 'foo' => 'bar'))
+    ['collection' => ['key' => ['a', 'b', 'c'], 'foo' => 'bar']]
 ---
 test: Shortcut Key after unindented collection
 brief: >
@@ -69,7 +69,7 @@ yaml: |
     - key: foo
       foo: bar
 php: |
-    array('collection' => array(array('key' => 'foo', 'foo' => 'bar')))
+    ['collection' => [['key' => 'foo', 'foo' => 'bar']]]
 ---
 test: Shortcut Key after unindented collection with custom spaces
 brief: >
@@ -79,4 +79,4 @@ yaml: |
     -  key: foo
        foo: bar
 php: |
-    array('collection' => array(array('key' => 'foo', 'foo' => 'bar')))
+    ['collection' => [['key' => 'foo', 'foo' => 'bar']]]

From 7ffd8d3e03512e849c7dac07ddf30e9d12d9fe11 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 12:03:13 +0100
Subject: [PATCH 036/103] fixed CS on Form PHP templates

---
 .../Resources/views/Form/attributes.html.php           |  2 +-
 .../Resources/views/Form/button_widget.html.php        |  4 ++--
 .../views/Form/choice_widget_collapsed.html.php        | 10 +++++-----
 .../views/Form/choice_widget_expanded.html.php         |  2 +-
 .../views/Form/choice_widget_options.html.php          |  6 +++---
 .../Resources/views/Form/collection_widget.html.php    |  2 +-
 .../Resources/views/Form/color_widget.html.php         |  2 +-
 .../Resources/views/Form/date_widget.html.php          |  4 ++--
 .../Resources/views/Form/email_widget.html.php         |  2 +-
 .../Resources/views/Form/form_label.html.php           |  4 ++--
 .../Resources/views/Form/hidden_widget.html.php        |  2 +-
 .../Resources/views/Form/integer_widget.html.php       |  2 +-
 .../Resources/views/Form/number_widget.html.php        |  2 +-
 .../Resources/views/Form/password_widget.html.php      |  2 +-
 .../Resources/views/Form/percent_widget.html.php       |  2 +-
 .../Resources/views/Form/range_widget.html.php         |  2 +-
 .../Resources/views/Form/reset_widget.html.php         |  2 +-
 .../Resources/views/Form/search_widget.html.php        |  2 +-
 .../Resources/views/Form/submit_widget.html.php        |  2 +-
 .../Resources/views/Form/tel_widget.html.php           |  2 +-
 .../Resources/views/Form/time_widget.html.php          |  2 +-
 .../Resources/views/Form/url_widget.html.php           |  2 +-
 22 files changed, 31 insertions(+), 31 deletions(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/attributes.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/attributes.html.php
index a9bd62f2a1b9..dbed8eff722e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/attributes.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/attributes.html.php
@@ -1,6 +1,6 @@
 <?php foreach ($attr as $k => $v): ?>
 <?php if ('placeholder' === $k || 'title' === $k): ?>
-<?php printf('%s="%s" ', $view->escape($k), $view->escape(false !== $translation_domain ? $view['translator']->trans($v, array(), $translation_domain) : $v)) ?>
+<?php printf('%s="%s" ', $view->escape($k), $view->escape(false !== $translation_domain ? $view['translator']->trans($v, [], $translation_domain) : $v)) ?>
 <?php elseif (true === $v): ?>
 <?php printf('%s="%s" ', $view->escape($k), $view->escape($k)) ?>
 <?php elseif (false !== $v): ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/button_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/button_widget.html.php
index 4b6387698450..2a10aa0f415b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/button_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/button_widget.html.php
@@ -1,4 +1,4 @@
 <?php if (!$label) { $label = isset($label_format)
-    ? strtr($label_format, array('%name%' => $name, '%id%' => $id))
+    ? strtr($label_format, ['%name%' => $name, '%id%' => $id])
     : $view['form']->humanize($name); } ?>
-<button type="<?php echo isset($type) ? $view->escape($type) : 'button' ?>" <?php echo $view['form']->block($form, 'button_attributes') ?>><?php echo $view->escape(false !== $translation_domain ? $view['translator']->trans($label, array(), $translation_domain) : $label) ?></button>
+<button type="<?php echo isset($type) ? $view->escape($type) : 'button' ?>" <?php echo $view['form']->block($form, 'button_attributes') ?>><?php echo $view->escape(false !== $translation_domain ? $view['translator']->trans($label, [], $translation_domain) : $label) ?></button>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_collapsed.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_collapsed.html.php
index 92298cf5fcff..c63d354e1789 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_collapsed.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_collapsed.html.php
@@ -2,17 +2,17 @@
     <?php if ($required && null === $placeholder && $placeholder_in_choices === false && $multiple === false && (!isset($attr['size']) || $attr['size'] <= 1)):
         $required = false;
     endif; ?>
-    <?php echo $view['form']->block($form, 'widget_attributes', array(
+    <?php echo $view['form']->block($form, 'widget_attributes', [
         'required' => $required,
-    )) ?>
+    ]) ?>
     <?php if ($multiple): ?> multiple="multiple"<?php endif ?>
 >
-    <?php if (null !== $placeholder): ?><option value=""<?php if ($required && empty($value) && '0' !== $value): ?> selected="selected"<?php endif?>><?php echo '' != $placeholder ? $view->escape(false !== $translation_domain ? $view['translator']->trans($placeholder, array(), $translation_domain) : $placeholder) : '' ?></option><?php endif; ?>
+    <?php if (null !== $placeholder): ?><option value=""<?php if ($required && empty($value) && '0' !== $value): ?> selected="selected"<?php endif?>><?php echo '' != $placeholder ? $view->escape(false !== $translation_domain ? $view['translator']->trans($placeholder, [], $translation_domain) : $placeholder) : '' ?></option><?php endif; ?>
     <?php if (count($preferred_choices) > 0): ?>
-        <?php echo $view['form']->block($form, 'choice_widget_options', array('choices' => $preferred_choices)) ?>
+        <?php echo $view['form']->block($form, 'choice_widget_options', ['choices' => $preferred_choices]) ?>
         <?php if (count($choices) > 0 && null !== $separator): ?>
             <option disabled="disabled"><?php echo $separator ?></option>
         <?php endif ?>
     <?php endif ?>
-    <?php echo $view['form']->block($form, 'choice_widget_options', array('choices' => $choices)) ?>
+    <?php echo $view['form']->block($form, 'choice_widget_options', ['choices' => $choices]) ?>
 </select>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_expanded.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_expanded.html.php
index 2c426872071f..9691759a907f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_expanded.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_expanded.html.php
@@ -1,6 +1,6 @@
 <div <?php echo $view['form']->block($form, 'widget_container_attributes') ?>>
 <?php foreach ($form as $child): ?>
     <?php echo $view['form']->widget($child) ?>
-    <?php echo $view['form
10000
']->label($child, null, array('translation_domain' => $choice_translation_domain)) ?>
+    <?php echo $view['form']->label($child, null, ['translation_domain' => $choice_translation_domain]) ?>
 <?php endforeach ?>
 </div>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_options.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_options.html.php
index f1c6ad3b56f2..a19b5a5e6e0b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_options.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/choice_widget_options.html.php
@@ -4,10 +4,10 @@
 <?php $formHelper = $view['form']; ?>
 <?php foreach ($choices as $group_label => $choice): ?>
     <?php if (is_array($choice) || $choice instanceof ChoiceGroupView): ?>
-        <optgroup label="<?php echo $view->escape(false !== $choice_translation_domain ? $translatorHelper->trans($group_label, array(), $choice_translation_domain) : $group_label) ?>">
-            <?php echo $formHelper->block($form, 'choice_widget_options', array('choices' => $choice)) ?>
+        <optgroup label="<?php echo $view->escape(false !== $choice_translation_domain ? $translatorHelper->trans($group_label, [], $choice_translation_domain) : $group_label) ?>">
+            <?php echo $formHelper->block($form, 'choice_widget_options', ['choices' => $choice]) ?>
         </optgroup>
     <?php else: ?>
-        <option value="<?php echo $view->escape($choice->value) ?>" <?php echo $formHelper->block($form, 'choice_attributes', array('choice_attr' => $choice->attr)) ?><?php if ($is_selected($choice->value, $value)): ?> selected="selected"<?php endif?>><?php echo $view->escape(false !== $choice_translation_domain ? $translatorHelper->trans($choice->label, array(), $choice_translation_domain) : $choice->label) ?></option>
+        <option value="<?php echo $view->escape($choice->value) ?>" <?php echo $formHelper->block($form, 'choice_attributes', ['choice_attr' => $choice->attr]) ?><?php if ($is_selected($choice->value, $value)): ?> selected="selected"<?php endif?>><?php echo $view->escape(false !== $choice_translation_domain ? $translatorHelper->trans($choice->label, [], $choice_translation_domain) : $choice->label) ?></option>
     <?php endif ?>
 <?php endforeach ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/collection_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/collection_widget.html.php
index 9f6a94bcefc9..40dfdaf1f031 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/collection_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/collection_widget.html.php
@@ -1,4 +1,4 @@
 <?php if (isset($prototype)): ?>
     <?php $attr['data-prototype'] = $view->escape($view['form']->row($prototype)) ?>
 <?php endif ?>
-<?php echo $view['form']->widget($form, array('attr' => $attr)) ?>
+<?php echo $view['form']->widget($form, ['attr' => $attr]) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/color_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/color_widget.html.php
index 10a8cdf14930..48f5c2c30dfd 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/color_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/color_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'color'));
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'color']);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/date_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/date_widget.html.php
index 22e51d2735a7..fbd844f28693 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/date_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/date_widget.html.php
@@ -2,10 +2,10 @@
     <?php echo $view['form']->block($form, 'form_widget_simple'); ?>
 <?php else: ?>
     <div <?php echo $view['form']->block($form, 'widget_container_attributes') ?>>
-        <?php echo str_replace(array('{{ year }}', '{{ month }}', '{{ day }}'), array(
+        <?php echo str_replace(['{{ year }}', '{{ month }}', '{{ day }}'], [
             $view['form']->widget($form['year']),
             $view['form']->widget($form['month']),
             $view['form']->widget($form['day']),
-        ), $date_pattern) ?>
+        ], $date_pattern) ?>
     </div>
 <?php endif ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/email_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/email_widget.html.php
index 0b30c5bb7ae5..fa6b0ee8a14a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/email_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/email_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'email')) ?>
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'email']) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_label.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_label.html.php
index 78c953ec5a1f..8e8e5b94983b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_label.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_label.html.php
@@ -2,7 +2,7 @@
 <?php if ($required) { $label_attr['class'] = trim((isset($label_attr['class']) ? $label_attr['class'] : '').' required'); } ?>
 <?php if (!$compound) { $label_attr['for'] = $id; } ?>
 <?php if (!$label) { $label = isset($label_format)
-    ? strtr($label_format, array('%name%' => $name, '%id%' => $id))
+    ? strtr($label_format, ['%name%' => $name, '%id%' => $id])
     : $view['form']->humanize($name); } ?>
-<label<?php if ($label_attr) { echo ' '.$view['form']->block($form, 'attributes', array('attr' => $label_attr)); } ?>><?php echo $view->escape(false !== $translation_domain ? $view['translator']->trans($label, array(), $translation_domain) : $label) ?></label>
+<label<?php if ($label_attr) { echo ' '.$view['form']->block($form, 'attributes', ['attr' => $label_attr]); } ?>><?php echo $view->escape(false !== $translation_domain ? $view['translator']->trans($label, [], $translation_domain) : $label) ?></label>
 <?php endif ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/hidden_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/hidden_widget.html.php
index a43f7de475e7..6bcbb5e0461a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/hidden_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/hidden_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'hidden')) ?>
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'hidden']) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/integer_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/integer_widget.html.php
index 5fceb49a3895..faaff51e676f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/integer_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/integer_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'number')) ?>
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'number']) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/number_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/number_widget.html.php
index bf4a4c478502..3d6f79c63bed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/number_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/number_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'text')) ?>
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'text']) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/password_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/password_widget.html.php
index ec96cfb46b24..5514468f6a1b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/password_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/password_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'password')) ?>
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'password']) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/percent_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/percent_widget.html.php
index 8519da429b18..f5839ebf7020 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/percent_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/percent_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'text')) ?> %
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'text']) ?> %
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/range_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/range_widget.html.php
index 4c628f8e005b..d6650d815467 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/range_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/range_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'range'));
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'range']);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/reset_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/reset_widget.html.php
index e8fa18e488df..af45b1566998 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/reset_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/reset_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'button_widget', array('type' => isset($type) ? $type : 'reset')) ?>
+<?php echo $view['form']->block($form, 'button_widget', ['type' => isset($type) ? $type : 'reset']) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/search_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/search_widget.html.php
index 48a33f4aa2db..191279b517eb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/search_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/search_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'search')) ?>
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'search']) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/submit_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/submit_widget.html.php
index 6bf71f5a1e1c..baea83332633 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/submit_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/submit_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'button_widget', array('type' => isset($type) ? $type : 'submit')) ?>
+<?php echo $view['form']->block($form, 'button_widget', ['type' => isset($type) ? $type : 'submit']) ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/tel_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/tel_widget.html.php
index 777953812702..dd471b9518d2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/tel_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/tel_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'tel'));
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'tel']);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/time_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/time_widget.html.php
index e24411cd74b8..cd2f5596011c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/time_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/time_widget.html.php
@@ -1,7 +1,7 @@
 <?php if ($widget == 'single_text'): ?>
     <?php echo $view['form']->block($form, 'form_widget_simple'); ?>
 <?php else: ?>
-    <?php $vars = $widget == 'text' ? array('attr' => array('size' => 1)) : array() ?>
+    <?php $vars = $widget == 'text' ? ['attr' => ['size' => 1]] : [] ?>
     <div <?php echo $view['form']->block($form, 'widget_container_attributes') ?>>
         <?php
             // There should be no spaces between the colons and the widgets, that's why
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/url_widget.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/url_widget.html.php
index 9e26318497b3..cd653c89c5cc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/url_widget.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/url_widget.html.php
@@ -1 +1 @@
-<?php echo $view['form']->block($form, 'form_widget_simple', array('type' => isset($type) ? $type : 'url')) ?>
+<?php echo $view['form']->block($form, 'form_widget_simple', ['type' => isset($type) ? $type : 'url']) ?>

From afaa13e9469feb0f2979fd947ea3e8a84c09daad Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 12:42:57 +0100
Subject: [PATCH 037/103] fixed CS on generated container files

---
 .../DependencyInjection/Dumper/PhpDumper.php  | 55 ++++++++--------
 .../Tests/Fixtures/Bar.php                    |  2 +-
 .../Tests/Fixtures/TestServiceSubscriber.php  |  4 +-
 .../Tests/Fixtures/config/basic.php           |  2 +-
 .../Tests/Fixtures/config/child.php           |  2 +-
 .../Tests/Fixtures/config/defaults.php        |  4 +-
 .../Tests/Fixtures/config/instanceof.php      |  4 +-
 .../Tests/Fixtures/config/prototype.php       |  4 +-
 .../Tests/Fixtures/config/services9.php       | 62 +++++++++----------
 .../Tests/Fixtures/containers/container11.php |  2 +-
 .../Tests/Fixtures/containers/container12.php |  2 +-
 .../Tests/Fixtures/containers/container19.php |  4 +-
 .../Tests/Fixtures/containers/container21.php |  8 +--
 .../Tests/Fixtures/containers/container8.php  |  6 +-
 .../Tests/Fixtures/containers/container9.php  | 58 ++++++++---------
 .../containers/container_almost_circular.php  |  6 +-
 .../containers/container_env_in_id.php        |  2 +-
 .../container_uninitialized_ref.php           |  8 +--
 .../Fixtures/includes/ProjectExtension.php    |  2 +-
 .../Tests/Fixtures/includes/foo.php           |  6 +-
 ...er_class_constructor_without_arguments.php | 10 +--
 ...s_with_mandatory_constructor_arguments.php | 10 +--
 ...ss_with_optional_constructor_arguments.php | 10 +--
 ...om_container_class_without_constructor.php | 10 +--
 .../Tests/Fixtures/php/services1-1.php        | 10 +--
 .../Tests/Fixtures/php/services1.php          | 10 +--
 .../Tests/Fixtures/php/services10.php         | 26 ++++----
 .../Tests/Fixtures/php/services12.php         | 28 ++++-----
 .../Tests/Fixtures/php/services13.php         | 14 ++---
 .../Tests/Fixtures/php/services19.php         | 28 ++++-----
 .../Tests/Fixtures/php/services24.php         | 14 ++---
 .../Tests/Fixtures/php/services26.php         | 28 ++++-----
 .../Tests/Fixtures/php/services33.php         | 18 +++---
 .../Tests/Fixtures/php/services8.php          | 24 +++----
 .../Tests/Fixtures/php/services9.php          | 34 +++++-----
 .../Tests/Fixtures/php/services9_as_files.txt | 48 +++++++-------
 .../Tests/Fixtures/php/services9_compiled.php | 38 ++++++------
 .../Tests/Fixtures/php/services_adawson.php   | 24 +++----
 .../php/services_almost_circular_private.php  | 18 +++---
 .../php/services_almost_circular_public.php   | 18 +++---
 .../Fixtures/php/services_array_params.php    | 34 +++++-----
 .../Fixtures/php/services_base64_env.php      | 22 +++----
 .../php/services_dedup_lazy_proxy.php         | 14 ++---
 .../Fixtures/php/services_deep_graph.php      | 14 ++---
 .../Tests/Fixtures/php/services_env_in_id.php | 36 +++++------
 .../Fixtures/php/services_inline_requires.php | 32 +++++-----
 .../Fixtures/php/services_inline_self_ref.php | 18 +++---
 .../Fixtures/php/services_legacy_privates.php | 20 +++---
 .../Tests/Fixtures/php/services_locator.php   | 34 +++++-----
 .../Fixtures/php/services_non_shared_lazy.php | 18 +++---
 .../Fixtures/php/services_private_frozen.php  | 18 +++---
 .../php/services_private_in_expression.php    | 18 +++---
 .../Tests/Fixtures/php/services_rot13_env.php | 34 +++++-----
 .../Fixtures/php/services_subscriber.php      | 26 ++++----
 .../Tests/Fixtures/php/services_tsantos.php   | 20 +++---
 .../php/services_uninitialized_ref.php        | 22 +++----
 56 files changed, 522 insertions(+), 521 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 1e348b2bf43b..dc14f967f9da 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -215,11 +215,11 @@ public function dump(array $options = [])
 
             if ($ids = array_keys($this->container->getRemovedIds())) {
                 sort($ids);
-                $c = "<?php\n\nreturn array(\n";
+                $c = "<?php\n\nreturn [\n";
                 foreach ($ids as $id) {
                     $c .= '    '.$this->doExport($id)." => true,\n";
                 }
-                $files['removed-ids.php'] = $c .= ");\n";
+                $files['removed-ids.php'] = $c .= "];\n";
             }
 
             foreach ($this->generateServiceFiles() as $file => $c) {
@@ -258,11 +258,11 @@ public function dump(array $options = [])
     \\class_alias(\\Container{$hash}\\{$options['class']}::class, {$options['class']}::class, false);
 }
 
-return new \\Container{$hash}\\{$options['class']}(array(
+return new \\Container{$hash}\\{$options['class']}([
     'container.build_hash' => '$hash',
     'container.build_id' => '$id',
     'container.build_time' => $time,
-), __DIR__.\\DIRECTORY_SEPARATOR.'Container{$hash}');
+], __DIR__.\\DIRECTORY_SEPARATOR.'Container{$hash}');
 
 EOF;
         } else {
@@ -607,7 +607,7 @@ private function addServiceConfigurator(Definition $definition, $variableName =
                 return sprintf("        (%s)->%s(\$%s);\n", $this->dumpValue($callable[0]), $callable[1], $variableName);
             }
 
-            return sprintf("        \\call_user_func(array(%s, '%s'), \$%s);\n", $this->dumpValue($callable[0]), $callable[1], $variableName);
+            return sprintf("        \\call_user_func([%s, '%s'], \$%s);\n", $this->dumpValue($callable[0]), $callable[1], $variableName);
         }
 
         return sprintf("        %s(\$%s);\n", $callable, $variableName);
@@ -900,7 +900,7 @@ private function addNewInstance(Definition $definition, $return, $instantiation,
                     return $return.sprintf("(%s)->%s(%s);\n", $class, $callable[1], $arguments ? implode(', ', $arguments) : '');
                 }
 
-                return $return.sprintf("\\call_user_func(array(%s, '%s')%s);\n", $class, $callable[1], $arguments ? ', '.implode(', ', $arguments) : '');
+                return $return.sprintf("\\call_user_func([%s, '%s']%s);\n", $class, $callable[1], $arguments ? ', '.implode(', ', $arguments) : '');
             }
 
             return $return.sprintf("%s(%s);\n", $this->dumpLiteralClass($this->dumpValue($callable)), $arguments ? implode(', ', $arguments) : '');
@@ -947,7 +947,7 @@ private function startClass($class, $baseClass, $baseClassWithNamespace)
 class $class extends $baseClass
 {
     private \$parameters;
-    private \$targetDirs = array();
+    private \$targetDirs = [];
 
     public function __construct()
     {
@@ -965,7 +965,7 @@ public function __construct()
         }
         if ($this->asFiles) {
             $code = str_replace('$parameters', "\$buildParameters;\n    private \$containerDir;\n    private \$parameters", $code);
-            $code = str_replace('__construct()', '__construct(array $buildParameters = array(), $containerDir = __DIR__)', $code);
+            $code = str_replace('__construct()', '__construct(array $buildParameters = [], $containerDir = __DIR__)', $code);
             $code .= "        \$this->buildParameters = \$buildParameters;\n";
             $code .= "        \$this->containerDir = \$containerDir;\n";
         }
@@ -987,7 +987,7 @@ public function __construct()
                 $code .= "        \$this->parameters = \$this->getDefaultParameters();\n\n";
             }
 
-            $code .= "        \$this->services = array();\n";
+            $code .= "        \$this->services = [];\n";
         } else {
             $arguments = $this->container->getParameterBag()->all() ? 'new ParameterBag($this->getDefaultParameters())' : null;
             $code .= "        parent::__construct($arguments);\n";
@@ -1085,7 +1085,7 @@ private function addNormalizedIds()
             }
         }
 
-        return $code ? "        \$this->normalizedIds = array(\n".$code."        );\n" : '';
+        return $code ? "        \$this->normalizedIds = [\n".$code."        ];\n" : '';
     }
 
     /**
@@ -1104,7 +1104,7 @@ private function addSyntheticIds()
             }
         }
 
-        return $code ? "        \$this->syntheticIds = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->syntheticIds = [\n{$code}        ];\n" : '';
     }
 
     /**
@@ -1130,7 +1130,7 @@ private function addRemovedIds()
                 $code .= '            '.$this->doExport($id)." => true,\n";
             }
 
-            $code = "array(\n{$code}        )";
+            $code = "[\n{$code}        ]";
         }
 
         return <<<EOF
@@ -1159,7 +1159,7 @@ private function addMethodMap()
             }
         }
 
-        return $code ? "        \$this->methodMap = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->methodMap = [\n{$code}        ];\n" : '';
     }
 
     /**
@@ -1178,7 +1178,7 @@ private function addFileMap()
             }
         }
 
-        return $code ? "        \$this->fileMap = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->fileMap = [\n{$code}        ];\n" : '';
     }
 
     /**
@@ -1210,9 +1210,9 @@ private function addPrivateServices()
             return '';
         }
 
-        $out = "        \$this->privates = array(\n";
+        $out = "        \$this->privates = [\n";
         $out .= $code;
-        $out .= "        );\n";
+        $out .= "        ];\n";
 
         return $out;
     }
@@ -1225,10 +1225,10 @@ private function addPrivateServices()
     private function addAliases()
     {
         if (!$aliases = $this->container->getAliases()) {
-            return $this->container->isCompiled() ? "\n        \$this->aliases = array();\n" : '';
+            return $this->container->isCompiled() ? "\n        \$this->aliases = [];\n" : '';
         }
 
-        $code = "        \$this->aliases = array(\n";
+        $code = "        \$this->aliases = [\n";
         ksort($aliases);
         foreach ($aliases as $alias => $id) {
             $id = $this->container->normalizeId($id);
@@ -1238,7 +1238,7 @@ private function addAliases()
             $code .= '            '.$this->doExport($alias).' => '.$this->doExport($id).",\n";
         }
 
-        return $code."        );\n";
+        return $code."        ];\n";
     }
 
     private function addInlineRequires()
@@ -1295,7 +1295,7 @@ private function addDefaultParametersMethod()
                 $normalizedParams[] = sprintf('        %s => %s,', $this->export($lcKey), $this->export($key));
             }
             $export = $this->exportParameters([$value]);
-            $export = explode('0 => ', substr(rtrim($export, " )\n"), 7, -1), 2);
+            $export = explode('0 => ', substr(rtrim($export, " ]\n"), 2, -1), 2);
 
             if (preg_match("/\\\$this->(?:getEnv\('(?:\w++:)*+\w++'\)|targetDirs\[\d++\])/", $export[1])) {
                 $dynamicPhp[$key] = sprintf('%scase %s: $value = %s; break;', $export[0], $this->export($key), $export[1]);
@@ -1303,7 +1303,8 @@ private function addDefaultParametersMethod()
                 $php[] = sprintf('%s%s => %s,', $export[0], $this->export($key), $export[1]);
             }
         }
-        $parameters = sprintf("array(\n%s\n%s)", implode("\n", $php), str_repeat(' ', 8));
+
+        $parameters = sprintf("[\n%s\n%s]", implode("\n", $php), str_repeat(' ', 8));
 
         $code = '';
         if ($this->container->isCompiled()) {
@@ -1379,14 +1380,14 @@ public function getParameterBag()
 EOF;
                 $getDynamicParameter = sprintf($getDynamicParameter, implode("\n", $dynamicPhp));
             } else {
-                $loadedDynamicParameters = 'array()';
+                $loadedDynamicParameters = '[]';
                 $getDynamicParameter = str_repeat(' ', 8).'throw new InvalidArgumentException(sprintf(\'The dynamic parameter "%s" must be defined.\', $name));';
             }
 
             $code .= <<<EOF
 
     private \$loadedDynamicParameters = {$loadedDynamicParameters};
-    private \$dynamicParameters = array();
+    private \$dynamicParameters = [];
 
     /*{$this->docStar}
      * Computes a dynamic parameter.
@@ -1405,7 +1406,7 @@ private function getDynamicParameter(\$name)
 
 EOF;
 
-            $code .= '    private $normalizedParameterNames = '.($normalizedParams ? sprintf("array(\n%s\n    );", implode("\n", $normalizedParams)) : 'array();')."\n";
+            $code .= '    private $normalizedParameterNames = '.($normalizedParams ? sprintf("[\n%s\n    ];", implode("\n", $normalizedParams)) : '[];')."\n";
             $code .= <<<'EOF'
 
     private function normalizeParameterName($name)
@@ -1478,7 +1479,7 @@ private function exportParameters(array $parameters, $path = '', $indent = 12)
             $php[] = sprintf('%s%s => %s,', str_repeat(' ', $indent), $this->export($key), $value);
         }
 
-        return sprintf("array(\n%s\n%s)", implode("\n", $php), str_repeat(' ', $indent - 4));
+        return sprintf("[\n%s\n%s]", implode("\n", $php), str_repeat(' ', $indent - 4));
     }
 
     /**
@@ -1599,7 +1600,7 @@ private function dumpValue($value, $interpolate = true)
                 $code[] = sprintf('%s => %s', $this->dumpValue($k, $interpolate), $this->dumpValue($v, $interpolate));
             }
 
-            return sprintf('array(%s)', implode(', ', $code));
+            return sprintf('[%s]', implode(', ', $code));
         } elseif ($value instanceof ArgumentInterface) {
             $scope = [$this->definitionVariables, $this->referenceVariables];
             $this->definitionVariables = $this->referenceVariables = null;
@@ -1691,7 +1692,7 @@ private function dumpValue($value, $interpolate = true)
                             return sprintf('(%s)->%s(%s)', $class, $factory[1], implode(', ', $arguments));
                         }
 
-                        return sprintf("\\call_user_func(array(%s, '%s')%s)", $class, $factory[1], \count($arguments) > 0 ? ', '.implode(', ', $arguments) : '');
+                        return sprintf("\\call_user_func([%s, '%s']%s)", $class, $factory[1], \count($arguments) > 0 ? ', '.implode(', ', $arguments) : '');
                     }
 
                     if ($factory[0] instanceof Reference) {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Bar.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Bar.php
index d243866d36ef..83f2da12a70a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Bar.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Bar.php
@@ -13,7 +13,7 @@
 
 class Bar implements BarInterface
 {
-    public function __construct($quz = null, \NonExistent $nonExistent = null, BarInterface $decorated = null, array $foo = array())
+    public function __construct($quz = null, \NonExistent $nonExistent = null, BarInterface $decorated = null, array $foo = [])
     {
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/TestServiceSubscriber.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/TestServiceSubscriber.php
index 875abe9e02e1..a3b042b8f261 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/TestServiceSubscriber.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/TestServiceSubscriber.php
@@ -12,11 +12,11 @@ public function __construct($container)
 
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             __CLASS__,
             '?'.CustomDefinition::class,
             'bar' => CustomDefinition::class,
             'baz' => '?'.CustomDefinition::class,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/basic.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/basic.php
index b98e894c3725..a9e250b9213a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/basic.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/basic.php
@@ -7,5 +7,5 @@
 return function (ContainerConfigurator $c) {
     $s = $c->services();
     $s->set(BarService::class)
-        ->args(array(inline('FooClass')));
+        ->args([inline('FooClass')]);
 };
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/child.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/child.php
index 6fd84485e7a3..8a5f2431d0ab 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/child.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/child.php
@@ -13,7 +13,7 @@
         ->set('foo')
             ->parent(BarService::class)
             ->decorate('bar', 'b', 1)
-            ->args(array(ref('b')))
+            ->args([ref('b')])
             ->class('Class2')
             ->file('file.php')
             ->parent('bar')
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/defaults.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/defaults.php
index de3b99d745a5..2889d3fbb640 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/defaults.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/defaults.php
@@ -12,10 +12,10 @@
         ->private()
         ->autoconfigure()
         ->autowire()
-        ->tag('t', array('a' => 'b'))
+        ->tag('t', ['a' => 'b'])
         ->bind(Foo::class, ref('bar'))
         ->private();
 
-    $s->set(Foo::class)->args(array(ref('bar')))->public();
+    $s->set(Foo::class)->args([ref('bar')])->public();
     $s->set('bar', Foo::class)->call('setFoo')->autoconfigure(false);
 };
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/instanceof.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/instanceof.php
index 062e8c00ab25..0d6aac7a0051 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/instanceof.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/instanceof.php
@@ -9,8 +9,8 @@
     $s = $c->services();
     $s->instanceof(Prototype\Foo::class)
         ->property('p', 0)
-        ->call('setFoo', array(ref('foo')))
-        ->tag('tag', array('k' => 'v'))
+        ->call('setFoo', [ref('foo')])
+        ->tag('tag', ['k' => 'v'])
         ->share(false)
         ->lazy()
         ->configurator('c')
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype.php
index 622c51af57a2..e2884aa20216 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype.php
@@ -12,8 +12,8 @@
         ->exclude('../Prototype/{OtherDir,BadClasses}')
         ->factory('f')
         ->deprecate('%service_id%')
-        ->args(array(0))
-        ->args(array(1))
+        ->args([0])
+        ->args([1])
         ->autoconfigure(false)
         ->tag('foo')
         ->parent('foo');
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/services9.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/services9.php
index b013e5126d3b..d9373a2a6f9e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/services9.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/services9.php
@@ -16,65 +16,65 @@
 
     $s = $c->services();
     $s->set('foo')
-        ->args(array('foo', ref('foo.baz'), array('%foo%' => 'foo is %foo%', 'foobar' => '%foo%'), true, ref('service_container')))
+        ->args(['foo', ref('foo.baz'), ['%foo%' => 'foo is %foo%', 'foobar' => '%foo%'], true, ref('service_container')])
         ->class(FooClass::class)
-        ->tag('foo', array('foo' => 'foo'))
-        ->tag('foo', array('bar' => 'bar', 'baz' => 'baz'))
-        ->factory(array(FooClass::class, 'getInstance'))
+        ->tag('foo', ['foo' => 'foo'])
+        ->tag('foo', ['bar' => 'bar', 'baz' => 'baz'])
+        ->factory([FooClass::class, 'getInstance'])
         ->property('foo', 'bar')
         ->property('moo', ref('foo.baz'))
-        ->property('qux', array('%foo%' => 'foo is %foo%', 'foobar' => '%foo%'))
-        ->call('setBar', array(ref('bar')))
+        ->property('qux', ['%foo%' => 'foo is %foo%', 'foobar' => '%foo%'])
+        ->call('setBar', [ref('bar')])
         ->call('initialize')
         ->configurator('sc_configure');
 
     $s->set('foo.baz', '%baz_class%')
-        ->factory(array('%baz_class%', 'getInstance'))
-        ->configurator(array('%baz_class%', 'configureStatic1'));
+        ->factory(['%baz_class%', 'getInstance'])
+        ->configurator(['%baz_class%', 'configureStatic1']);
 
     $s->set('bar', FooClass::class)
-        ->args(array('foo', ref('foo.baz'), new Parameter('foo_bar')))
-        ->configurator(array(ref('foo.baz'), 'configure'));
+        ->args(['foo', ref('foo.baz'), new Parameter('foo_bar')])
+        ->configurator([ref('foo.baz'), 'configure']);
 
     $s->set('foo_bar', '%foo_class%')
-        ->args(array(ref('deprecated_service')))
+        ->args([ref('deprecated_service')])
         ->share(false);
 
     $s->set('method_call1', 'Bar\FooClass')
         ->file(realpath(__DIR__.'/../includes/foo.php'))
-        ->call('setBar', array(ref('foo')))
-        ->call('setBar', array(ref('foo2')->nullOnInvalid()))
-        ->call('setBar', array(ref('foo3')->ignoreOnInvalid()))
-        ->call('setBar', array(ref('foobaz')->ignoreOnInvalid()))
-        ->call('setBar', array(expr('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')));
+        ->call('setBar', [ref('foo')])
+        ->call('setBar', [ref('foo2')->nullOnInvalid()])
+        ->call('setBar', [ref('foo3')->ignoreOnInvalid()])
+        ->call('setBar', [ref('foobaz')->ignoreOnInvalid()])
+        ->call('setBar', [expr('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')]);
 
     $s->set('foo_with_inline', 'Foo')
-        ->call('setBar', array(ref('inlined')));
+        ->call('setBar', [ref('inlined')]);
 
     $s->set('inlined', 'Bar')
         ->property('pub', 'pub')
-        ->call('setBaz', array(ref('baz')))
+        ->call('setBaz', [ref('baz')])
         ->private();
 
     $s->set('baz', 'Baz')
-        ->call('setFoo', array(ref('foo_with_inline')));
+        ->call('setFoo', [ref('foo_with_inline')]);
 
     $s->set('request', 'Request')
         ->synthetic();
 
     $s->set('configurator_service', 'ConfClass')
         ->private()
-        ->call('setFoo', array(ref('baz')));
+        ->call('setFoo', [ref('baz')]);
 
     $s->set('configured_service', 'stdClass')
-        ->configurator(array(ref('configurator_service'), 'configureStdClass'));
+        ->configurator([ref('configurator_service'), 'configureStdClass']);
 
     $s->set('configurator_service_simple', 'ConfClass')
-        ->args(array('bar'))
+        ->args(['bar'])
         ->private();
 
     $s->set('configured_service_simple', 'stdClass')
-        ->configurator(array(ref('configurator_service_simple'), 'configureStdClass'));
+        ->configurator([ref('configurator_service_simple'), 'configureStdClass']);
 
     $s->set('decorated', 'stdClass');
 
@@ -92,28 +92,28 @@
         ->private();
 
     $s->set('factory_service', 'Bar')
-        ->factory(array(ref('foo.baz'), 'getInstance'));
+        ->factory([ref('foo.baz'), 'getInstance']);
 
     $s->set('new_factory_service', 'FooBarBaz')
         ->property('foo', 'bar')
-        ->factory(array(ref('new_factory'), 'getInstance'));
+        ->factory([ref('new_factory'), 'getInstance']);
 
     $s->set('service_from_static_method', 'Bar\FooClass')
-        ->factory(array('Bar\FooClass', 'getInstance'));
+        ->factory(['Bar\FooClass', 'getInstance']);
 
     $s->set('factory_simple', 'SimpleFactoryClass')
         ->deprecate()
-        ->args(array('foo'))
+        ->args(['foo'])
         ->private();
 
     $s->set('factory_service_simple', 'Bar')
-        ->factory(array(ref('factory_simple'), 'getInstance'));
+        ->factory([ref('factory_simple'), 'getInstance']);
 
     $s->set('lazy_context', 'LazyContext')
-        ->args(array(iterator(array('k1' => ref('foo.baz'), 'k2' => ref('service_container'))), iterator(array())));
+        ->args([iterator(['k1' => ref('foo.baz'), 'k2' => ref('service_container')]), iterator([])]);
 
     $s->set('lazy_context_ignore_invalid_ref', 'LazyContext')
-        ->args(array(iterator(array(ref('foo.baz'), ref('invalid')->ignoreOnInvalid())), iterator(array())));
+        ->args([iterator([ref('foo.baz'), ref('invalid')->ignoreOnInvalid()]), iterator([])]);
 
     $s->set('tagged_iterator_foo', 'Bar')
         ->private()
@@ -121,7 +121,7 @@
 
     $s->set('tagged_iterator', 'Bar')
         ->public()
-        ->args(array(tagged('foo')));
+        ->args([tagged('foo')]);
 
     $s->alias('alias_for_foo', 'foo')->private()->public();
     $s->alias('alias_for_alias', ref('alias_for_foo'));
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container11.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container11.php
index 150cd7921ee1..91e5c26330f4 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container11.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container11.php
@@ -6,7 +6,7 @@
 $container = new ContainerBuilder();
 $container->
     register('foo', 'FooClass')->
-    addArgument(new Definition('BarClass', array(new Definition('BazClass'))))
+    addArgument(new Definition('BarClass', [new Definition('BazClass')]))
     ->setPublic(true)
 ;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container12.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container12.php
index bc527eb79e78..ef0770302491 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container12.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container12.php
@@ -6,7 +6,7 @@
 $container->
     register('foo', 'FooClass\\Foo')->
     addArgument('foo<>&bar')->
-    addTag('foo"bar\\bar', array('foo' => 'foo"barřž€'))
+    addTag('foo"bar\\bar', ['foo' => 'foo"barřž€'])
     ->setPublic(true)
 ;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container19.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container19.php
index 300a5cc7697d..c3af5c96063b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container19.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container19.php
@@ -12,7 +12,7 @@
 
 $container
     ->register('service_from_anonymous_factory', '%foo%')
-    ->setFactory(array(new Definition('%foo%'), 'getInstance'))
+    ->setFactory([new Definition('%foo%'), 'getInstance'])
     ->setPublic(true)
 ;
 
@@ -20,7 +20,7 @@
 $anonymousServiceWithFactory->setFactory('Bar\FooClass::getInstance');
 $container
     ->register('service_with_method_call_and_factory', 'Bar\FooClass')
-    ->addMethodCall('setBar', array($anonymousServiceWithFactory))
+    ->addMethodCall('setBar', [$anonymousServiceWithFactory])
     ->setPublic(true)
 ;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container21.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container21.php
index 298c9266a9e2..d82cf38538c3 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container21.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container21.php
@@ -6,15 +6,15 @@
 $container = new ContainerBuilder();
 
 $bar = new Definition('Bar');
-$bar->setConfigurator(array(new Definition('Baz'), 'configureBar'));
+$bar->setConfigurator([new Definition('Baz'), 'configureBar']);
 
 $fooFactory = new Definition('FooFactory');
-$fooFactory->setFactory(array(new Definition('Foobar'), 'createFooFactory'));
+$fooFactory->setFactory([new Definition('Foobar'), 'createFooFactory']);
 
 $container
     ->register('foo', 'Foo')
-    ->setFactory(array($fooFactory, 'createFoo'))
-    ->setConfigurator(array($bar, 'configureFoo'))
+    ->setFactory([$fooFactory, 'createFoo'])
+    ->setConfigurator([$bar, 'configureFoo'])
     ->setPublic(true)
 ;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container8.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container8.php
index 1a4e5ab5c8d8..5b3c01c23cd5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container8.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container8.php
@@ -3,12 +3,12 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
 
-$container = new ContainerBuilder(new ParameterBag(array(
+$container = new ContainerBuilder(new ParameterBag([
     'foo' => '%baz%',
     'baz' => 'bar',
     'bar' => 'foo is %%foo bar',
     'escape' => '@escapeme',
-    'values' => array(true, false, null, 0, 1000.3, 'true', 'false', 'null'),
-)));
+    'values' => [true, false, null, 0, 1000.3, 'true', 'false', 'null'],
+]));
 
 return $container;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php
index 21d35611c33a..691a7fa695f9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php
@@ -14,26 +14,26 @@
 $container = new ContainerBuilder();
 $container
     ->register('foo', '\Bar\FooClass')
-    ->addTag('foo', array('foo' => 'foo'))
-    ->addTag('foo', array('bar' => 'bar', 'baz' => 'baz'))
-    ->setFactory(array('Bar\\FooClass', 'getInstance'))
-    ->setArguments(array('foo', new Reference('foo.baz'), array('%foo%' => 'foo is %foo%', 'foobar' => '%foo%'), true, new Reference('service_container')))
-    ->setProperties(array('foo' => 'bar', 'moo' => new Reference('foo.baz'), 'qux' => array('%foo%' => 'foo is %foo%', 'foobar' => '%foo%')))
-    ->addMethodCall('setBar', array(new Reference('bar')))
+    ->addTag('foo', ['foo' => 'foo'])
+    ->addTag('foo', ['bar' => 'bar', 'baz' => 'baz'])
+    ->setFactory(['Bar\\FooClass', 'getInstance'])
+    ->setArguments(['foo', new Reference('foo.baz'), ['%foo%' => 'foo is %foo%', 'foobar' => '%foo%'], true, new Reference('service_container')])
+    ->setProperties(['foo' => 'bar', 'moo' => new Reference('foo.baz'), 'qux' => ['%foo%' => 'foo is %foo%', 'foobar' => '%foo%']])
+    ->addMethodCall('setBar', [new Reference('bar')])
     ->addMethodCall('initialize')
     ->setConfigurator('sc_configure')
     ->setPublic(true)
 ;
 $container
     ->register('foo.baz', '%baz_class%')
-    ->setFactory(array('%baz_class%', 'getInstance'))
-    ->setConfigurator(array('%baz_class%', 'configureStatic1'))
+    ->setFactory(['%baz_class%', 'getInstance'])
+    ->setConfigurator(['%baz_class%', 'configureStatic1'])
     ->setPublic(true)
 ;
 $container
     ->register('bar', 'Bar\FooClass')
-    ->setArguments(array('foo', new Reference('foo.baz'), new Parameter('foo_bar')))
-    ->setConfigurator(array(new Reference('foo.baz'), 'configure'))
+    ->setArguments(['foo', new Reference('foo.baz'), new Parameter('foo_bar')])
+    ->setConfigurator([new Reference('foo.baz'), 'configure'])
     ->setPublic(true)
 ;
 $container
@@ -43,35 +43,35 @@
     ->setPublic(true)
 ;
 $container->getParameterBag()->clear();
-$container->getParameterBag()->add(array(
+$container->getParameterBag()->add([
     'baz_class' => 'BazClass',
     'foo_class' => 'Bar\FooClass',
     'foo' => 'bar',
-));
+]);
 $container
     ->register('method_call1', 'Bar\FooClass')
     ->setFile(realpath(__DIR__.'/../includes/foo.php'))
-    ->addMethodCall('setBar', array(new Reference('foo')))
-    ->addMethodCall('setBar', array(new Reference('foo2', ContainerInterface::NULL_ON_INVALID_REFERENCE)))
-    ->addMethodCall('setBar', array(new Reference('foo3', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)))
-    ->addMethodCall('setBar', array(new Reference('foobaz', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)))
-    ->addMethodCall('setBar', array(new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')))
+    ->addMethodCall('setBar', [new Reference('foo')])
+    ->addMethodCall('setBar', [new Reference('foo2', ContainerInterface::NULL_ON_INVALID_REFERENCE)])
+    ->addMethodCall('setBar', [new Reference('foo3', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)])
+    ->addMethodCall('setBar', [new Reference('foobaz', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)])
+    ->addMethodCall('setBar', [new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')])
     ->setPublic(true)
 ;
 $container
     ->register('foo_with_inline', 'Foo')
-    ->addMethodCall('setBar', array(new Reference('inlined')))
+    ->addMethodCall('setBar', [new Reference('inlined')])
     ->setPublic(true)
 ;
 $container
     ->register('inlined', 'Bar')
     ->setProperty('pub', 'pub')
-    ->addMethodCall('setBaz', array(new Reference('baz')))
+    ->addMethodCall('setBaz', [new Reference('baz')])
     ->setPublic(false)
 ;
 $container
     ->register('baz', 'Baz')
-    ->addMethodCall('setFoo', array(new Reference('foo_with_inline')))
+    ->addMethodCall('setFoo', [new Reference('foo_with_inline')])
     ->setPublic(true)
 ;
 $container
@@ -82,11 +82,11 @@
 $container
     ->register('configurator_service', 'ConfClass')
     ->setPublic(false)
-    ->addMethodCall('setFoo', array(new Reference('baz')))
+    ->addMethodCall('setFoo', [new Reference('baz')])
 ;
 $container
     ->register('configured_service', 'stdClass')
-    ->setConfigurator(array(new Reference('configurator_service'), 'configureStdClass'))
+    ->setConfigurator([new Reference('configurator_service'), 'configureStdClass'])
     ->setPublic(true)
 ;
 $container
@@ -96,7 +96,7 @@
 ;
 $container
     ->register('configured_service_simple', 'stdClass')
-    ->setConfigurator(array(new Reference('configurator_service_simple'), 'configureStdClass'))
+    ->setConfigurator([new Reference('configurator_service_simple'), 'configureStdClass'])
     ->setPublic(true)
 ;
 $container
@@ -125,18 +125,18 @@
 ;
 $container
     ->register('factory_service', 'Bar')
-    ->setFactory(array(new Reference('foo.baz'), 'getInstance'))
+    ->setFactory([new Reference('foo.baz'), 'getInstance'])
     ->setPublic(true)
 ;
 $container
     ->register('new_factory_service', 'FooBarBaz')
     ->setProperty('foo', 'bar')
-    ->setFactory(array(new Reference('new_factory'), 'getInstance'))
+    ->setFactory([new Reference('new_factory'), 'getInstance'])
     ->setPublic(true)
 ;
 $container
     ->register('service_from_static_method', 'Bar\FooClass')
-    ->setFactory(array('Bar\FooClass', 'getInstance'))
+    ->setFactory(['Bar\FooClass', 'getInstance'])
     ->setPublic(true)
 ;
 $container
@@ -147,17 +147,17 @@
 ;
 $container
     ->register('factory_service_simple', 'Bar')
-    ->setFactory(array(new Reference('factory_simple'), 'getInstance'))
+    ->setFactory([new Reference('factory_simple'), 'getInstance'])
     ->setPublic(true)
 ;
 $container
     ->register('lazy_context', 'LazyContext')
-    ->setArguments(array(new IteratorArgument(array('k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container'))), new IteratorArgument(array())))
+    ->setArguments([new IteratorArgument(['k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container')]), new IteratorArgument([])])
     ->setPublic(true)
 ;
 $container
     ->register('lazy_context_ignore_invalid_ref', 'LazyContext')
-    ->setArguments(array(new IteratorArgument(array(new Reference('foo.baz'), new Reference('invalid', ContainerInterface::IGNORE_ON_INVALID_REFERENCE))), new IteratorArgument(array())))
+    ->setArguments([new IteratorArgument([new Reference('foo.baz'), new Reference('invalid', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)]), new IteratorArgument([])])
     ->setPublic(true)
 ;
 $container
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_almost_circular.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_almost_circular.php
index 4c9906f7ae01..df136cfa5ddb 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_almost_circular.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_almost_circular.php
@@ -15,7 +15,7 @@
    ->addArgument(new Reference('bar'));
 
 $container->register('bar', BarCircular::class)->setPublic($public)
-    ->addMethodCall('addFoobar', array(new Reference('foobar')));
+    ->addMethodCall('addFoobar', [new Reference('foobar')]);
 
 $container->register('foobar', FoobarCircular::class)->setPublic($public)
     ->addArgument(new Reference('foo'));
@@ -26,7 +26,7 @@
    ->addArgument(new Reference('bar2'));
 
 $container->register('bar2', BarCircular::class)->setPublic(!$public)
-    ->addMethodCall('addFoobar', array(new Reference('foobar2')));
+    ->addMethodCall('addFoobar', [new Reference('foobar2')]);
 
 $container->register('foobar2', FoobarCircular::class)->setPublic($public)
     ->addArgument(new Reference('foo2'));
@@ -34,7 +34,7 @@
 // simple inline setter with internal reference
 
 $container->register('bar3', BarCircular::class)->setPublic(true)
-    ->addMethodCall('addFoobar', array(new Reference('foobar3'), new Reference('foobar3')));
+    ->addMethodCall('addFoobar', [new Reference('foobar3'), new Reference('foobar3')]);
 
 $container->register('foobar3', FoobarCircular::class)->setPublic($public);
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_env_in_id.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_env_in_id.php
index 4699f41011a4..1e851cf016c2 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_env_in_id.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_env_in_id.php
@@ -11,7 +11,7 @@
 
 $container->register('foo', 'stdClass')->setPublic(true)
    ->addArgument(new Reference('bar_%env(BAR)%'))
-   ->addArgument(array('baz_%env(BAR)%' => new Reference('baz_%env(BAR)%')));
+   ->addArgument(['baz_%env(BAR)%' => new Reference('baz_%env(BAR)%')]);
 
 $container->register('bar', 'stdClass')->setPublic(true)
    ->addArgument(new Reference('bar_%env(BAR)%'));
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_uninitialized_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_uninitialized_ref.php
index 7aeefb4d5227..36c05c3fa33e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_uninitialized_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_uninitialized_ref.php
@@ -33,16 +33,16 @@
     ->setProperty('foo1', new Reference('foo1', $container::IGNORE_ON_UNINITIALIZED_REFERENCE))
     ->setProperty('foo2', new Reference('foo2', $container::IGNORE_ON_UNINITIALIZED_REFERENCE))
     ->setProperty('foo3', new Reference('foo3', $container::IGNORE_ON_UNINITIALIZED_REFERENCE))
-    ->setProperty('closures', array(
+    ->setProperty('closures', [
         new ServiceClosureArgument(new Reference('foo1', $container::IGNORE_ON_UNINITIALIZED_REFERENCE)),
         new ServiceClosureArgument(new Reference('foo2', $container::IGNORE_ON_UNINITIALIZED_REFERENCE)),
         new ServiceClosureArgument(new Reference('foo3', $container::IGNORE_ON_UNINITIALIZED_REFERENCE)),
-    ))
-    ->setProperty('iter', new IteratorArgument(array(
+    ])
+    ->setProperty('iter', new IteratorArgument([
         'foo1' => new Reference('foo1', $container::IGNORE_ON_UNINITIALIZED_REFERENCE),
         'foo2' => new Reference('foo2', $container::IGNORE_ON_UNINITIALIZED_REFERENCE),
         'foo3' => new Reference('foo3', $container::IGNORE_ON_UNINITIALIZED_REFERENCE),
-    )))
+    ]))
     ->setPublic(true)
 ;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/ProjectExtension.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/ProjectExtension.php
index ba07d7c44cbd..2198b19c4d62 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/ProjectExtension.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/ProjectExtension.php
@@ -14,7 +14,7 @@ public function load(array $configs, ContainerBuilder $configuration)
         if ($configs) {
             $config = call_user_func_array('array_merge', $configs);
         } else {
-            $config = array();
+            $config = [];
         }
 
         $configuration->setDefinition('project.service.bar', new Definition('FooClass'));
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/foo.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/foo.php
index bcb4e20a94af..20bc928b9728 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/foo.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/foo.php
@@ -11,14 +11,14 @@ class FooClass
     public $initialized = false;
     public $configured = false;
     public $called = false;
-    public $arguments = array();
+    public $arguments = [];
 
-    public function __construct($arguments = array())
+    public function __construct($arguments = [])
     {
         $this->arguments = $arguments;
     }
 
-    public static function getInstance($arguments = array())
+    public static function getInstance($arguments = [])
     {
         $obj = new self($arguments);
         $obj->called = true;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
index 0a443f3a7965..7495110dd877 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
@@ -19,24 +19,24 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithoutArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         parent::__construct();
         $this->parameterBag = null;
 
-        $this->services = array();
+        $this->services = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
index dd9ed9cbb314..eb573f9baecf 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
@@ -19,21 +19,21 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithMandatoryArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
+        $this->services = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
index 6bf3c9061370..d322f80a0f19 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
@@ -19,24 +19,24 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithOptionalArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         parent::__construct();
         $this->parameterBag = null;
 
-        $this->services = array();
+        $this->services = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
index 4cf1ae40b44d..68bc1ef8beb1 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
@@ -19,21 +19,21 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\NoConstructorContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
+        $this->services = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
index bdd0d101ab8d..ed085a5ef91a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
@@ -19,21 +19,21 @@
 class Container extends \Symfony\Component\DependencyInjection\Dump\AbstractContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
+        $this->services = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
index 85830af78c1d..9733ba9c6c82 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
@@ -17,21 +17,21 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
+        $this->services = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
index aa078ab85747..1b7443352df9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
@@ -17,26 +17,26 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -63,7 +63,7 @@ public function isFrozen()
      */
     protected function getTestService()
     {
-        return $this->services['test'] = new \stdClass(array('only dot' => '.', 'concatenation as value' => '.\'\'.', 'concatenation from the start value' => '\'\'.', '.' => 'dot as a key', '.\'\'.' => 'concatenation as a key', '\'\'.' => 'concatenation from the start key', 'optimize concatenation' => 'string1-string2', 'optimize concatenation with empty string' => 'string1stri
10000
ng2', 'optimize concatenation from the start' => 'start', 'optimize concatenation at the end' => 'end', 'new line' => 'string with '."\n".'new line'));
+        return $this->services['test'] = new \stdClass(['only dot' => '.', 'concatenation as value' => '.\'\'.', 'concatenation from the start value' => '\'\'.', '.' => 'dot as a key', '.\'\'.' => 'concatenation as a key', '\'\'.' => 'concatenation from the start key', 'optimize concatenation' => 'string1-string2', 'optimize concatenation with empty string' => 'string1string2', 'optimize concatenation from the start' => 'start', 'optimize concatenation at the end' => 'end', 'new line' => 'string with '."\n".'new line']);
     }
 
     public function getParameter($name)
@@ -109,8 +109,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -126,7 +126,7 @@ private function getDynamicParameter($name)
         throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -149,9 +149,9 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'empty_value' => '',
             'some_string' => '-',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
index 4266ad8e59b8..ba564b82f4a5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
@@ -17,7 +17,7 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -27,20 +27,20 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -67,7 +67,7 @@ public function isFrozen()
      */
     protected function getTestService()
     {
-        return $this->services['test'] = new \stdClass(('wiz'.$this->targetDirs[1]), array(('wiz'.$this->targetDirs[1]) => ($this->targetDirs[2].'/')));
+        return $this->services['test'] = new \stdClass(('wiz'.$this->targetDirs[1]), [('wiz'.$this->targetDirs[1]) => ($this->targetDirs[2].'/')]);
     }
 
     public function getParameter($name)
@@ -113,11 +113,11 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'foo' => false,
         'buz' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -140,7 +140,7 @@ private function getDynamicParameter($name)
         return $this->dynamicParameters[$name] = $value;
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -163,9 +163,9 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'bar' => __DIR__,
             'baz' => (__DIR__.'/PhpDumperTest.php'),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
index 04705a29e469..40ce06decaef 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
@@ -17,25 +17,25 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
index c8b57a7ccafd..664f4dd90743 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
@@ -17,27 +17,27 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'service_from_anonymous_factory' => 'getServiceFromAnonymousFactoryService',
             'service_with_method_call_and_factory' => 'getServiceWithMethodCallAndFactoryService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -124,10 +124,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'foo' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -149,9 +149,9 @@ private function getDynamicParameter($name)
         return $this->dynamicParameters[$name] = $value;
     }
 
-    private $normalizedParameterNames = array(
+    private $normalizedParameterNames = [
         'env(foo)' => 'env(FOO)',
-    );
+    ];
 
     private function normalizeParameterName($name)
     {
@@ -174,8 +174,8 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(FOO)' => 'Bar\\FaooClass',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
index 1be6319eef07..b277ddd1c2d2 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
@@ -17,24 +17,24 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
index d6256008f6ce..595d12ba6081 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
@@ -17,7 +17,7 @@
 class Symfony_DI_PhpDumper_Test_EnvParameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -27,21 +27,21 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -126,14 +126,14 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'bar' => false,
         'baz' => false,
         'json' => false,
         'db_dsn' => false,
         'env(json_file)' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -159,10 +159,10 @@ private function getDynamicParameter($name)
         return $this->dynamicParameters[$name] = $value;
     }
 
-    private $normalizedParameterNames = array(
+    private $normalizedParameterNames = [
         'env(foo)' => 'env(FOO)',
         'env(db)' => 'env(DB)',
-    );
+    ];
 
     private function normalizeParameterName($name)
     {
@@ -185,10 +185,10 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'project_dir' => '/foo/bar',
             'env(FOO)' => 'foo',
             'env(DB)' => 'sqlite://%project_dir%/var/data.db',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
index 3e308c1d4d36..98e34bc9b1f5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
@@ -17,29 +17,29 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->normalizedIds = array(
+        $this->services = [];
+        $this->normalizedIds = [
             'bar\\foo' => 'Bar\\Foo',
             'foo\\foo' => 'Foo\\Foo',
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'Bar\\Foo' => 'getFooService',
             'Foo\\Foo' => 'getFoo2Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
index 285942eb118c..cc78c196acb8 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
@@ -17,23 +17,23 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
+        $this->services = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -96,8 +96,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -113,7 +113,7 @@ private function getDynamicParameter($name)
         throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -136,12 +136,12 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'foo' => 'bar',
             'baz' => 'bar',
             'bar' => 'foo is %foo bar',
             'escape' => '@escapeme',
-            'values' => array(
+            'values' => [
                 0 => true,
                 1 => false,
                 2 => NULL,
@@ -150,7 +150,7 @@ protected function getDefaultParameters()
                 5 => 'true',
                 6 => 'false',
                 7 => 'null',
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
index fc04f5faeece..0e09ec624dbe 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
@@ -17,19 +17,19 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         parent::__construct(new ParameterBag($this->getDefaultParameters()));
-        $this->normalizedIds = array(
+        $this->normalizedIds = [
             'psr\\container\\containerinterface' => 'Psr\\Container\\ContainerInterface',
             'symfony\\component\\dependencyinjection\\containerinterface' => 'Symfony\\Component\\DependencyInjection\\ContainerInterface',
-        );
-        $this->syntheticIds = array(
+        ];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'baz' => 'getBazService',
             'configurator_service' => 'getConfiguratorServiceService',
@@ -56,21 +56,21 @@ public function __construct()
             'service_from_static_method' => 'getServiceFromStaticMethodService',
             'tagged_iterator' => 'getTaggedIteratorService',
             'tagged_iterator_foo' => 'getTaggedIteratorFooService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'configurator_service' => true,
             'configurator_service_simple' => true,
             'factory_simple' => true,
             'inlined' => true,
             'new_factory' => true,
             'tagged_iterator_foo' => true,
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'Psr\\Container\\ContainerInterface' => 'service_container',
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => 'service_container',
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
-        );
+        ];
     }
 
     /**
@@ -204,11 +204,11 @@ protected function getFooService()
     {
         $a = ${($_ = isset($this->services['foo.baz']) ? $this->services['foo.baz'] : $this->getFoo_BazService()) && false ?: '_'};
 
-        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array($this->getParameter('foo') => 'foo is '.$this->getParameter('foo').'', 'foobar' => $this->getParameter('foo')), true, $this);
+        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, [$this->getParameter('foo') => 'foo is '.$this->getParameter('foo').'', 'foobar' => $this->getParameter('foo')], true, $this);
 
         $instance->foo = 'bar';
         $instance->moo = $a;
-        $instance->qux = array($this->getParameter('foo') => 'foo is '.$this->getParameter('foo').'', 'foobar' => $this->getParameter('foo'));
+        $instance->qux = [$this->getParameter('foo') => 'foo is '.$this->getParameter('foo').'', 'foobar' => $this->getParameter('foo')];
         $instance->setBar(${($_ = isset($this->services['bar']) ? $this->services['bar'] : $this->getBarService()) && false ?: '_'});
         $instance->initialize();
         sc_configure($instance);
@@ -223,9 +223,9 @@ protected function getFooService()
      */
     protected function getFoo_BazService()
     {
-        $this->services['foo.baz'] = $instance = \call_user_func(array($this->getParameter('baz_class'), 'getInstance'));
+        $this->services['foo.baz'] = $instance = \call_user_func([$this->getParameter('baz_class'), 'getInstance']);
 
-        \call_user_func(array($this->getParameter('baz_class'), 'configureStatic1'), $instance);
+        \call_user_func([$this->getParameter('baz_class'), 'configureStatic1'], $instance);
 
         return $instance;
     }
@@ -434,10 +434,10 @@ protected function getTaggedIteratorFooService()
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
index fa032cbc1f94..2dc415ced497 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
@@ -2,7 +2,7 @@ Array
 (
     [Container%s/removed-ids.php] => <?php
 
-return array(
+return [
     'Psr\\Container\\ContainerInterface' => true,
     'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
     'configurator_service' => true,
@@ -13,7 +13,7 @@ return array(
     'inlined' => true,
     'new_factory' => true,
     'tagged_iterator_foo' => true,
-);
+];
 
     [Container%s/getBazService.php] => <?php
 
@@ -124,11 +124,11 @@ use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
 
 $a = ${($_ = isset($this->services['foo.baz']) ? $this->services['foo.baz'] : $this->load('getFoo_BazService.php')) && false ?: '_'};
 
-$this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array('bar' => 'foo is bar', 'foobar' => 'bar'), true, $this);
+$this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, ['bar' => 'foo is bar', 'foobar' => 'bar'], true, $this);
 
 $instance->foo = 'bar';
 $instance->moo = $a;
-$instance->qux = array('bar' => 'foo is bar', 'foobar' => 'bar');
+$instance->qux = ['bar' => 'foo is bar', 'foobar' => 'bar'];
 $instance->setBar(${($_ = isset($this->services['bar']) ? $this->services['bar'] : $this->getBarService()) && false ?: '_'});
 $instance->initialize();
 sc_configure($instance);
@@ -278,9 +278,9 @@ class ProjectServiceContainer extends Container
     private $buildParameters;
     private $containerDir;
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
-    public function __construct(array $buildParameters = array(), $containerDir = __DIR__)
+    public function __construct(array $buildParameters = [], $containerDir = __DIR__)
     {
         $dir = $this->targetDirs[0] = \dirname($containerDir);
         for ($i = 1; $i <= 5; ++$i) {
@@ -290,15 +290,15 @@ class ProjectServiceContainer extends Container
         $this->containerDir = $containerDir;
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->syntheticIds = array(
+        $this->services = [];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo_bar' => 'getFooBarService',
-        );
-        $this->fileMap = array(
+        ];
+        $this->fileMap = [
             'baz' => 'getBazService.php',
             'configured_service' => 'getConfiguredServiceService.php',
             'configured_service_simple' => 'getConfiguredServiceSimpleService.php',
@@ -318,16 +318,16 @@ class ProjectServiceContainer extends Container
             'service_from_static_method' => 'getServiceFromStaticMethodService.php',
             'tagged_iterator' => 'getTaggedIteratorService.php',
             'tagged_iterator_foo' => 'getTaggedIteratorFooService.php',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'factory_simple' => true,
             'tagged_iterator_foo' => true,
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
             'decorated' => 'decorator_service_with_name',
-        );
+        ];
     }
 
     public function getRemovedIds()
@@ -435,8 +435,8 @@ class ProjectServiceContainer extends Container
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -452,7 +452,7 @@ class ProjectServiceContainer extends Container
         throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -475,11 +475,11 @@ class ProjectServiceContainer extends Container
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
-        );
+        ];
     }
 }
 
@@ -499,10 +499,10 @@ if (!\class_exists(ProjectServiceContainer::class, false)) {
     \class_alias(\Container%s\ProjectServiceContainer::class, ProjectServiceContainer::class, false);
 }
 
-return new \Container%s\ProjectServiceContainer(array(
+return new \Container%s\ProjectServiceContainer([
     'container.build_hash' => '%s',
     'container.build_id' => '%s',
     'container.build_time' => %d,
-), __DIR__.\DIRECTORY_SEPARATOR.'Container%s');
+], __DIR__.\DIRECTORY_SEPARATOR.'Container%s');
 
 )
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
index b741950fa697..02e0680da0ef 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
@@ -17,17 +17,17 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->syntheticIds = array(
+        $this->services = [];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'baz' => 'getBazService',
             'configured_service' => 'getConfiguredServiceService',
@@ -49,21 +49,21 @@ public function __construct()
             'service_from_static_method' => 'getServiceFromStaticMethodService',
             'tagged_iterator' => 'getTaggedIteratorService',
             'tagged_iterator_foo' => 'getTaggedIteratorFooService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'factory_simple' => true,
             'tagged_iterator_foo' => true,
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
             'decorated' => 'decorator_service_with_name',
-        );
+        ];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'configurator_service' => true,
@@ -74,7 +74,7 @@ public function getRemovedIds()
             'inlined' => true,
             'new_factory' => true,
             'tagged_iterator_foo' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -218,11 +218,11 @@ protected function getFooService()
     {
         $a = ${($_ = isset($this->services['foo.baz']) ? $this->services['foo.baz'] : $this->getFoo_BazService()) && false ?: '_'};
 
-        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array('bar' => 'foo is bar', 'foobar' => 'bar'), true, $this);
+        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, ['bar' => 'foo is bar', 'foobar' => 'bar'], true, $this);
 
         $instance->foo = 'bar';
         $instance->moo = $a;
-        $instance->qux = array('bar' => 'foo is bar', 'foobar' => 'bar');
+        $instance->qux = ['bar' => 'foo is bar', 'foobar' => 'bar'];
         $instance->setBar(${($_ = isset($this->services['bar']) ? $this->services['bar'] : $this->getBarService()) && false ?: '_'});
         $instance->initialize();
         sc_configure($instance);
@@ -426,8 +426,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -443,7 +443,7 @@ private function getDynamicParameter($name)
         throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -466,10 +466,10 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
index 37b95567ce88..f222fc6e606f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
@@ -17,12 +17,12 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->normalizedIds = array(
+        $this->services = [];
+        $this->normalizedIds = [
             'app\\bus' => 'App\\Bus',
             'app\\db' => 'App\\Db',
             'app\\handler1' => 'App\\Handler1',
@@ -30,8 +30,8 @@ public function __construct()
             'app\\processor' => 'App\\Processor',
             'app\\registry' => 'App\\Registry',
             'app\\schema' => 'App\\Schema',
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'App\\Bus' => 'getBusService',
             'App\\Db' => 'getDbService',
             'App\\Handler1' => 'getHandler1Service',
@@ -39,21 +39,21 @@ public function __construct()
             'App\\Processor' => 'getProcessorService',
             'App\\Registry' => 'getRegistryService',
             'App\\Schema' => 'getSchemaService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'App\\Handler1' => true,
             'App\\Handler2' => true,
             'App\\Processor' => true,
             'App\\Registry' => true,
             'App\\Schema' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'App\\Handler1' => true,
             'App\\Handler2' => true,
             'App\\Processor' => true,
@@ -61,7 +61,7 @@ public function getRemovedIds()
             'App\\Schema' => true,
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -167,7 +167,7 @@ protected function getRegistryService()
     {
         $this->services['App\Registry'] = $instance = new \App\Registry();
 
-        $instance->processor = array(0 => ${($_ = isset($this->services['App\Db']) ? $this->services['App\Db'] : $this->getDbService()) && false ?: '_'}, 1 => ${($_ = isset($this->services['App\Bus']) ? $this->services['App\Bus'] : $this->getBusService()) && false ?: '_'});
+        $instance->processor = [0 => ${($_ = isset($this->services['App\Db']) ? $this->services['App\Db'] : $this->getDbService()) && false ?: '_'}, 1 => ${($_ = isset($this->services['App\Bus']) ? $this->services['App\Bus'] : $this->getBusService()) && false ?: '_'}];
 
         return $instance;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
index 8aa4a2c406b6..5345aa3b308a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
@@ -17,12 +17,12 @@
 class Symfony_DI_PhpDumper_Test_Almost_Circular_Private extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar2' => 'getBar2Service',
             'bar3' => 'getBar3Service',
             'bar6' => 'getBar6Service',
@@ -45,8 +45,8 @@ public function __construct()
             'multiuse1' => 'getMultiuse1Service',
             'root' => 'getRootService',
             'subscriber' => 'getSubscriberService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'bar6' => true,
             'level2' => true,
             'level3' => true,
@@ -54,14 +54,14 @@ public function __construct()
             'level5' => true,
             'level6' => true,
             'multiuse1' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar' => true,
@@ -83,7 +83,7 @@ public function getRemovedIds()
             'logger2' => true,
             'multiuse1' => true,
             'subscriber2' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
index a5de37f12c93..b569b335fc85 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
@@ -17,12 +17,12 @@
 class Symfony_DI_PhpDumper_Test_Almost_Circular_Public extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'bar3' => 'getBar3Service',
             'bar5' => 'getBar5Service',
@@ -52,8 +52,8 @@ public function __construct()
             'multiuse1' => 'getMultiuse1Service',
             'root' => 'getRootService',
             'subscriber' => 'getSubscriberService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'bar6' => true,
             'level2' => true,
             'level3' => true,
@@ -61,14 +61,14 @@ public function __construct()
             'level5' => true,
             'level6' => true,
             'multiuse1' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar2' => true,
@@ -83,7 +83,7 @@ public function getRemovedIds()
             'logger2' => true,
             'multiuse1' => true,
             'subscriber2' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
index 5ef6cb6882c8..be59456b0f1d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
@@ -17,7 +17,7 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -27,20 +27,20 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -117,10 +117,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'array_2' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -134,9 +134,9 @@ public function getParameterBag()
     private function getDynamicParameter($name)
     {
         switch ($name) {
-            case 'array_2': $value = array(
+            case 'array_2': $value = [
                 0 => ($this->targetDirs[2].'/Dumper'),
-            ); break;
+            ]; break;
             default: throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
         }
         $this->loadedDynamicParameters[$name] = true;
@@ -144,7 +144,7 @@ private function getDynamicParameter($name)
         return $this->dynamicParameters[$name] = $value;
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -167,10 +167,10 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
-            'array_1' => array(
+        return [
+            'array_1' => [
                 0 => 123,
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
index 6b6be95697e0..8582c3e2df84 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
@@ -17,23 +17,23 @@
 class Symfony_DI_PhpDumper_Test_Base64Parameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
+        $this->services = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -96,10 +96,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -121,7 +121,7 @@ private function getDynamicParameter($name)
         return $this->dynamicParameters[$name] = $value;
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -144,8 +144,8 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => 'd29ybGQ=',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
index 73a7f259f86b..ec3c8028bb8c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
@@ -17,25 +17,25 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
index 9a1d1ab8c3e9..4158fc6288f7 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
@@ -17,25 +17,25 @@
 class Symfony_DI_PhpDumper_Test_Deep_Graph extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
index dab23e1dbcc1..ad76566b1af9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
@@ -17,36 +17,36 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->normalizedIds = array(
+        $this->services = [];
+        $this->normalizedIds = [
             'bar_%env(bar)%' => 'bar_%env(BAR)%',
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'bar_%env(BAR)%' => 'getBarenvBARService',
             'foo' => 'getFooService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'bar_%env(BAR)%' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar_%env(BAR)%' => true,
             'baz_%env(BAR)%' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -83,7 +83,7 @@ protected function getBarService()
      */
     protected function getFooService()
     {
-        return $this->services['foo'] = new \stdClass(${($_ = isset($this->services['bar_%env(BAR)%']) ? $this->services['bar_%env(BAR)%'] : ($this->services['bar_%env(BAR)%'] = new \stdClass())) && false ?: '_'}, array('baz_'.$this->getEnv('string:BAR') => new \stdClass()));
+        return $this->services['foo'] = new \stdClass(${($_ = isset($this->services['bar_%env(BAR)%']) ? $this->services['bar_%env(BAR)%'] : ($this->services['bar_%env(BAR)%'] = new \stdClass())) && false ?: '_'}, ['baz_'.$this->getEnv('string:BAR') => new \stdClass()]);
     }
 
     /**
@@ -139,8 +139,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -156,9 +156,9 @@ private function getDynamicParameter($name)
         throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
     }
 
-    private $normalizedParameterNames = array(
+    private $normalizedParameterNames = [
         'env(bar)' => 'env(BAR)',
-    );
+    ];
 
     private function normalizeParameterName($name)
     {
@@ -181,8 +181,8 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(BAR)' => 'bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
index c6927eb95d65..a23a69367413 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
@@ -17,7 +17,7 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -27,24 +27,24 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->normalizedIds = array(
+        $this->services = [];
+        $this->normalizedIds = [
             'symfony\\component\\dependencyinjection\\tests\\fixtures\\includes\\hotpath\\c1' => 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C1',
             'symfony\\component\\dependencyinjection\\tests\\fixtures\\includes\\hotpath\\c2' => 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C2',
             'symfony\\component\\dependencyinjection\\tests\\fixtures\\includes\\hotpath\\c3' => 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3',
             'symfony\\component\\dependencyinjection\\tests\\fixtures\\parentnotexists' => 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\ParentNotExists',
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\ParentNotExists' => 'getParentNotExistsService',
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C1' => 'getC1Service',
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C2' => 'getC2Service',
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3' => 'getC3Service',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
 
         $this->privates['service_container'] = function () {
             include_once $this->targetDirs[1].'/includes/HotPath/I1.php';
@@ -56,11 +56,11 @@ public function __construct()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -168,8 +168,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -185,7 +185,7 @@ private function getDynamicParameter($name)
         throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -208,8 +208,8 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'inline_requires' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
index fa8a4e69081f..a2573eae6d3a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
@@ -17,27 +17,27 @@
 class Symfony_DI_PhpDumper_Test_Inline_Self_Ref extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->normalizedIds = array(
+        $this->services = [];
+        $this->normalizedIds = [
             'app\\foo' => 'App\\Foo',
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'App\\Foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_legacy_privates.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_legacy_privates.php
index d720ae396f89..30dd2c9ba978 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_legacy_privates.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_legacy_privates.php
@@ -17,7 +17,7 @@
 class Symfony_DI_PhpDumper_Test_Legacy_Privates extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -25,8 +25,8 @@ public function __construct()
         for ($i = 1; $i <= 5; ++$i) {
             $this->targetDirs[$i] = $dir = \dirname($dir);
         }
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'private' => 'getPrivateService',
             'private_alias' => 'getPrivateAliasService',
@@ -37,8 +37,8 @@ public function __construct()
             'private_not_removed' => 'getPrivateNotRemovedService',
             'private_parent' => 'getPrivateParentService',
             'public_child' => 'getPublicChildService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'decorated_private' => true,
             'decorated_private_alias' => true,
             'private' => true,
@@ -47,17 +47,17 @@ public function __construct()
             'private_not_inlined' => true,
             'private_not_removed' => true,
             'private_parent' => true,
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_to_private' => 'private',
             'decorated_private' => 'private_decorator',
             'decorated_private_alias' => 'private_alias_decorator',
-        );
+        ];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'decorated_private' => true,
@@ -71,7 +71,7 @@ public function getRemovedIds()
             'private_not_inlined' => true,
             'private_not_removed' => true,
             'private_parent' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
index c436aea407c8..4969b2db0937 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
@@ -17,12 +17,12 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar_service' => 'getBarServiceService',
             'baz_service' => 'getBazServiceService',
             'foo_service' => 'getFooServiceService',
@@ -32,24 +32,24 @@ public function __construct()
             'translator_1' => 'getTranslator1Service',
             'translator_2' => 'getTranslator2Service',
             'translator_3' => 'getTranslator3Service',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'baz_service' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'baz_service' => true,
             'translator.loader_1_locator' => true,
             'translator.loader_2_locator' => true,
             'translator.loader_3_locator' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -86,13 +86,13 @@ protected function getBarServiceService()
      */
     protected function getFooServiceService()
     {
-        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\ServiceLocator(array('bar' => function () {
+        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\ServiceLocator(['bar' => function () {
             return ${($_ = isset($this->services['bar_service']) ? $this->services['bar_service'] : $this->getBarServiceService()) && false ?: '_'};
         }, 'baz' => function () {
             $f = function (\stdClass $v) { return $v; }; return $f(${($_ = isset($this->services['baz_service']) ? $this->services['baz_service'] : ($this->services['baz_service'] = new \stdClass())) && false ?: '_'});
         }, 'nil' => function () {
             return NULL;
-        }));
+        }]);
     }
 
     /**
@@ -132,9 +132,9 @@ protected function getTranslator_Loader3Service()
      */
     protected function getTranslator1Service()
     {
-        return $this->services['translator_1'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_1' => function () {
+        return $this->services['translator_1'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_1' => function () {
             return ${($_ = isset($this->services['translator.loader_1']) ? $this->services['translator.loader_1'] : ($this->services['translator.loader_1'] = new \stdClass())) && false ?: '_'};
-        })));
+        }]));
     }
 
     /**
@@ -144,9 +144,9 @@ protected function getTranslator1Service()
      */
     protected function getTranslator2Service()
     {
-        $this->services['translator_2'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_2' => function () {
+        $this->services['translator_2'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_2' => function () {
             return ${($_ = isset($this->services['translator.loader_2']) ? $this->services['translator.loader_2'] : ($this->services['translator.loader_2'] = new \stdClass())) && false ?: '_'};
-        })));
+        }]));
 
         $instance->addResource('db', ${($_ = isset($this->services['translator.loader_2']) ? $this->services['translator.loader_2'] : ($this->services['translator.loader_2'] = new \stdClass())) && false ?: '_'}, 'nl');
 
@@ -160,9 +160,9 @@ protected function getTranslator2Service()
      */
     protected function getTranslator3Service()
     {
-        $this->services['translator_3'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_3' => function () {
+        $this->services['translator_3'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_3' => function () {
             return ${($_ = isset($this->services['translator.loader_3']) ? $this->services['translator.loader_3'] : ($this->services['translator.loader_3'] = new \stdClass())) && false ?: '_'};
-        })));
+        }]));
 
         $a = ${($_ = isset($this->services['translator.loader_3']) ? $this->services['translator.loader_3'] : ($this->services['translator.loader_3'] = new \stdClass())) && false ?: '_'};
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
index 6c3b1405069f..b56063a1842a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
@@ -17,31 +17,31 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'bar' => true,
             'foo' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar' => true,
             'foo' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
index 8ef589c127c5..da1d716c58a3 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
@@ -17,30 +17,30 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar_service' => 'getBarServiceService',
             'baz_service' => 'getBazServiceService',
             'foo_service' => 'getFooServiceService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'baz_service' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'baz_service' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
index 75cbc2730b05..c7fb579b0721 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
@@ -17,30 +17,30 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'private_foo' => 'getPrivateFooService',
             'public_foo' => 'getPublicFooService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'private_foo' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'private_bar' => true,
             'private_foo' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
index efbb0023164b..7c903b11d072 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
@@ -17,30 +17,30 @@
 class Symfony_DI_PhpDumper_Test_Rot13Parameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = array();
-        $this->normalizedIds = array(
+        $this->services = [];
+        $this->normalizedIds = [
             'symfony\\component\\dependencyinjec
10000
tion\\tests\\dumper\\rot13envvarprocessor' => 'Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor',
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor' => 'getRot13EnvVarProcessorService',
             'container.env_var_processors_locator' => 'getContainer_EnvVarProcessorsLocatorService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -77,9 +77,9 @@ protected function getRot13EnvVarProcessorService()
      */
     protected function getContainer_EnvVarProcessorsLocatorService()
     {
-        return $this->services['container.env_var_processors_locator'] = new \Symfony\Component\DependencyInjection\ServiceLocator(array('rot13' => function () {
+        return $this->services['container.env_var_processors_locator'] = new \Symfony\Component\DependencyInjection\ServiceLocator(['rot13' => function () {
             return ${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor'] = new \Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor())) && false ?: '_'};
-        }));
+        }]);
     }
 
     public function getParameter($name)
@@ -125,10 +125,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -150,7 +150,7 @@ private function getDynamicParameter($name)
         return $this->dynamicParameters[$name] = $value;
     }
 
-    private $normalizedParameterNames = array();
+    private $normalizedParameterNames = [];
 
     private function normalizeParameterName($name)
     {
@@ -173,8 +173,8 @@ private function normalizeParameterName($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => 'jbeyq',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
index 8f198f0ba835..9424a7611433 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
@@ -17,36 +17,36 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->normalizedIds = array(
+        $this->services = [];
+        $this->normalizedIds = [
             'symfony\\component\\dependencyinjection\\tests\\fixtures\\customdefinition' => 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition',
             'symfony\\component\\dependencyinjection\\tests\\fixtures\\testservicesubscriber' => 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber',
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => 'getCustomDefinitionService',
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => 'getTestServiceSubscriberService',
             'foo_service' => 'getFooServiceService',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => true,
             'service_locator.jmktfsv' => true,
             'service_locator.jmktfsv.foo_service' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -83,7 +83,7 @@ protected function getTestServiceSubscriberService()
      */
     protected function getFooServiceService()
     {
-        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber((new \Symfony\Component\DependencyInjection\ServiceLocator(array('Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => function () {
+        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber((new \Symfony\Component\DependencyInjection\ServiceLocator(['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => function () {
             $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v = null) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition())) && false ?: '_'});
         }, 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => function () {
             $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber $v) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber())) && false ?: '_'});
@@ -91,7 +91,7 @@ protected function getFooServiceService()
             $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber())) && false ?: '_'});
         }, 'baz' => function () {
             $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v = null) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition())) && false ?: '_'});
-        })))->withContext('foo_service', $this));
+        }]))->withContext('foo_service', $this));
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
index dbaa70956d3b..b14cdebb966c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
@@ -17,28 +17,28 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->normalizedIds = array(
+        $this->services = [];
+        $this->normalizedIds = [
             'tsantos\\serializer\\serializerinterface' => 'TSantos\\Serializer\\SerializerInterface',
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'tsantos_serializer' => 'getTsantosSerializerService',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'TSantos\\Serializer\\SerializerInterface' => 'tsantos_serializer',
-        );
+        ];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function compile()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
index c53e336d278b..7a24f72c590c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
@@ -17,32 +17,32 @@
 class Symfony_DI_PhpDumper_Test_Uninitialized_Reference extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = array();
-        $this->methodMap = array(
+        $this->services = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'baz' => 'getBazService',
             'foo1' => 'getFoo1Service',
             'foo3' => 'getFoo3Service',
-        );
-        $this->privates = array(
+        ];
+        $this->privates = [
             'foo3' => true,
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo2' => true,
             'foo3' => true,
-        );
+        ];
     }
 
     public function compile()
@@ -74,13 +74,13 @@ protected function getBarService()
         $instance->foo1 = ${($_ = isset($this->services['foo1']) ? $this->services['foo1'] : null) && false ?: '_'};
         $instance->foo2 = null;
         $instance->foo3 = ${($_ = isset($this->services['foo3']) ? $this->services['foo3'] : null) && false ?: '_'};
-        $instance->closures = array(0 => function () {
+        $instance->closures = [0 => function () {
             return ${($_ = isset($this->services['foo1']) ? $this->services['foo1'] : null) && false ?: '_'};
         }, 1 => function () {
             return null;
         }, 2 => function () {
             return ${($_ = isset($this->services['foo3']) ? $this->services['foo3'] : null) && false ?: '_'};
-        });
+        }];
         $instance->iter = new RewindableGenerator(function () {
             if (isset($this->services['foo1'])) {
                 yield 'foo1' => ${($_ = isset($this->services['foo1']) ? $this->services['foo1'] : null) && false ?: '_'};

From ec7dcb27843ab40c4c2f28ff5d62981954ecf6ee Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 13:47:19 +0100
Subject: [PATCH 038/103] fixed CS in generated files

---
 .../DoctrineExtensionTest.php                 |   6 +-
 .../DeprecationErrorHandler/default.phpt      |   2 +-
 .../shutdown_deprecations.phpt                |   2 +-
 .../Tests/Iterator/PathFilterIteratorTest.php |   6 +-
 .../HttpFoundation/Tests/AcceptHeaderTest.php |   6 +-
 .../HttpFoundation/Tests/RequestTest.php      |   2 +-
 .../Matcher/Dumper/PhpMatcherDumper.php       |  14 +--
 .../Tests/Fixtures/dumper/url_matcher0.php    |   2 +-
 .../Tests/Fixtures/dumper/url_matcher1.php    |  96 ++++++++---------
 .../Tests/Fixtures/dumper/url_matcher2.php    | 100 +++++++++---------
 .../Tests/Fixtures/dumper/url_matcher3.php    |   8 +-
 .../Tests/Fixtures/dumper/url_matcher4.php    |  38 +++----
 .../Tests/Fixtures/dumper/url_matcher5.php    |  30 +++---
 .../Tests/Fixtures/dumper/url_matcher6.php    |  82 +++++++-------
 .../Tests/Fixtures/dumper/url_matcher7.php    |  82 +++++++-------
 .../VarDumper/Tests/Fixtures/Twig.php         |   6 +-
 .../VarDumper/Tests/Fixtures/dumb-var.php     |  10 +-
 17 files changed, 246 insertions(+), 246 deletions(-)

diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
index 8fcb07465a8f..fa848e8d2c27 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
@@ -178,10 +178,10 @@ public function providerBasicDrivers()
             ['doctrine.orm.cache.apcu.class',      ['type' => 'apcu']],
             ['doctrine.orm.cache.array.class',     ['type' => 'array']],
             ['doctrine.orm.cache.xcache.class',    ['type' => 'xcache']],
-            ['doctrine.orm.cache.wincache.class',  ['type' => 'wincache']],
-            ['doctrine.orm.cache.zenddata.class',  ['type' => 'zenddata']],
+            ['doctrine.orm.cache.wincache.class', array ('type' => 'wincache')],
+            ['doctrine.orm.cache.zenddata.class', array ('type' => 'zenddata')],
             ['doctrine.orm.cache.redis.class',     ['type' => 'redis'],     ['setRedis']],
-            ['doctrine.orm.cache.memcache.class',  ['type' => 'memcache'],  ['setMemcache']],
+            ['doctrine.orm.cache.memcache.class', array ('type' => 'memcache'), array ('setMemcache')],
             ['doctrine.orm.cache.memcached.class', ['type' => 'memcached'], ['setMemcached']],
         ];
     }
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
index 7a0595a7ddeb..1070b19a4371 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
@@ -35,7 +35,7 @@ class PHPUnit_Util_Test
 {
     public static function getGroups()
     {
-        return array();
+        return [];
     }
 }
 
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
index fddeed6085de..a0bf3e2ba761 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
@@ -35,7 +35,7 @@ class PHPUnit_Util_Test
 {
     public static function getGroups()
     {
-        return array();
+        return [];
     }
 }
 
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
index d44651771f86..1c3c95dc5cca 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
@@ -68,15 +68,15 @@ public function getTestFilterData()
             [$inner, ['/^A/'],       [], ['abc.dat', 'ab.dat', 'a.dat']],
             [$inner, ['/^A\/B/'],    [], ['abc.dat', 'ab.dat']],
             [$inner, ['/^A\/B\/C/'], [], ['abc.dat']],
-            [$inner, ['/A\/B\/C/'],  [], ['abc.dat', 'abc.dat.copy']],
+            [$inner, ['/A\/B\/C/'], array (), ['abc.dat', 'abc.dat.copy']],
 
             [$inner, ['A'],      [], ['abc.dat', 'ab.dat', 'a.dat', 'abc.dat.copy', 'ab.dat.copy', 'a.dat.copy']],
             [$inner, ['A/B'],    [], ['abc.dat', 'ab.dat', 'abc.dat.copy', 'ab.dat.copy']],
-            [$inner, ['A/B/C'],  [], ['abc.dat', 'abc.dat.copy']],
+            [$inner, ['A/B/C'], array (), ['abc.dat', 'abc.dat.copy']],
 
             [$inner, ['copy/A'],      [], ['abc.dat.copy', 'ab.dat.copy', 'a.dat.copy']],
             [$inner, ['copy/A/B'],    [], ['abc.dat.copy', 'ab.dat.copy']],
-            [$inner, ['copy/A/B/C'],  [], ['abc.dat.copy']],
+            [$inner, ['copy/A/B/C'], array (), ['abc.dat.copy']],
         ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
index 459b693d5cb8..d5518cc3cdb4 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
@@ -95,9 +95,9 @@ public function testSorting($string, array $values)
     public function provideSortingData()
     {
         return [
-            'quality has priority' => ['*;q=0.3,ISO-8859-1,utf-8;q=0.7',  ['ISO-8859-1', 'utf-8', '*']],
-            'order matters when q is equal' => ['*;q=0.3,ISO-8859-1;q=0.7,utf-8;q=0.7',  ['ISO-8859-1', 'utf-8', '*']],
-            'order matters when q is equal2' => ['*;q=0.3,utf-8;q=0.7,ISO-8859-1;q=0.7',  ['utf-8', 'ISO-8859-1', '*']],
+            'quality has priority' => ['*;q=0.3,ISO-8859-1,utf-8;q=0.7', array ('ISO-8859-1', 'utf-8', '*')],
+            'order matters when q is equal' => ['*;q=0.3,ISO-8859-1;q=0.7,utf-8;q=0.7', array ('ISO-8859-1', 'utf-8', '*')],
+            'order matters when q is equal2' => ['*;q=0.3,utf-8;q=0.7,ISO-8859-1;q=0.7', array ('utf-8', 'ISO-8859-1', '*')],
         ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index 505f271eabf9..9e60e4705493 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -1025,7 +1025,7 @@ public function getClientIpsProvider()
             // forwarded for with remote IPv6 addr not trusted
             [['1620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  null],
             // forwarded for with remote IPv6 addr trusted
-            [['2620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  ['1620:0:1cfe:face:b00c::3']],
+            [['2620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3', array ('1620:0:1cfe:face:b00c::3')],
             // forwarded for with remote IPv6 range trusted
             [['88.88.88.88'],              '2a01:198:603:0:396e:4789:8e99:890f', '88.88.88.88',     ['2a01:198:603:0::/65']],
 
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
index 7c1ec2a6f6b4..0a830b64d575 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
@@ -98,7 +98,7 @@ private function generateMatchMethod($supportsRedirections)
         return <<<EOF
     public function match(\$rawPathinfo)
     {
-        \$allow = array();
+        \$allow = [];
         \$pathinfo = rawurldecode(\$rawPathinfo);
         \$trimmedPathinfo = rtrim(\$pathinfo, '/');
         \$context = \$this->context;
@@ -290,7 +290,7 @@ private function compileRoute(Route $route, $name, $supportsRedirections, $paren
             if ($matches) {
                 $vars[] = '$matches';
             }
-            $vars[] = "array('_route' => '$name')";
+            $vars[] = "['_route' => '$name']";
 
             $code .= sprintf(
                 "            \$ret = \$this->mergeDefaults(array_replace(%s), %s);\n",
@@ -300,7 +300,7 @@ private function compileRoute(Route $route, $name, $supportsRedirections, $paren
         } elseif ($route->getDefaults()) {
             $code .= sprintf("            \$ret = %s;\n", str_replace("\n", '', var_export(array_replace($route->getDefaults(), ['_route' => $name]), true)));
         } else {
-            $code .= sprintf("            \$ret = array('_route' => '%s');\n", $name);
+            $code .= sprintf("            \$ret = ['_route' => '%s'];\n", $name);
         }
 
         if ($hasTrailingSlash) {
@@ -331,9 +331,9 @@ private function compileRoute(Route $route, $name, $supportsRedirections, $paren
                 $code .= <<<EOF
             \$requiredSchemes = $schemes;
             \$hasRequiredScheme = isset(\$requiredSchemes[\$context->getScheme()]);
-            if (!in_array($methodVariable, array('$methods'))) {
+            if (!in_array($methodVariable, ['$methods'])) {
                 if (\$hasRequiredScheme) {
-                    \$allow = array_merge(\$allow, array('$methods'));
+                    \$allow = array_merge(\$allow, ['$methods']);
                 }
                 goto $gotoname;
             }
@@ -363,8 +363,8 @@ private function compileRoute(Route $route, $name, $supportsRedirections, $paren
             }
         } elseif ($methods) {
             $code .= <<<EOF
-            if (!in_array($methodVariable, array('$methods'))) {
-                \$allow = array_merge(\$allow, array('$methods'));
+            if (!in_array($methodVariable, ['$methods'])) {
+                \$allow = array_merge(\$allow, ['$methods']);
                 goto $gotoname;
             }
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher0.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher0.php
index 9e9b9103bf77..4978093fa4e9 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher0.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher0.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($rawPathinfo)
     {
-        $allow = array();
+        $allow = [];
         $pathinfo = rawurldecode($rawPathinfo);
         $trimmedPathinfo = rtrim($pathinfo, '/');
         $context = $this->context;
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
index 23a93c193423..16fcc3e502fe 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($rawPathinfo)
     {
-        $allow = array();
+        $allow = [];
         $pathinfo = rawurldecode($rawPathinfo);
         $trimmedPathinfo = rtrim($pathinfo, '/');
         $context = $this->context;
@@ -31,7 +31,7 @@ public function match($rawPathinfo)
         if (0 === strpos($pathinfo, '/foo')) {
             // foo
             if (preg_match('#^/foo/(?P<bar>baz|symfony)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo')), array (  'def' => 'test',));
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo']), array (  'def' => 'test',));
             }
 
             // foofoo
@@ -44,9 +44,9 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/bar')) {
             // bar
             if (preg_match('#^/bar/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'bar')), array ());
-                if (!in_array($canonicalMethod, array('GET', 'HEAD'))) {
-                    $allow = array_merge($allow, array('GET', 'HEAD'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'bar']), array ());
+                if (!in_array($canonicalMethod, ['GET', 'HEAD'])) {
+                    $allow = array_merge($allow, ['GET', 'HEAD']);
                     goto not_bar;
                 }
 
@@ -56,9 +56,9 @@ public function match($rawPathinfo)
 
             // barhead
             if (0 === strpos($pathinfo, '/barhead') && preg_match('#^/barhead/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'barhead')), array ());
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'barhead']), array ());
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_barhead;
                 }
 
@@ -72,31 +72,31 @@ public function match($rawPathinfo)
             if (0 === strpos($pathinfo, '/test/baz')) {
                 // baz
                 if ('/test/baz' === $pathinfo) {
-                    return array('_route' => 'baz');
+                    return ['_route' => 'baz'];
                 }
 
                 // baz2
                 if ('/test/baz.html' === $pathinfo) {
-                    return array('_route' => 'baz2');
+                    return ['_route' => 'baz2'];
                 }
 
                 // baz3
                 if ('/test/baz3/' === $pathinfo) {
-                    return array('_route' => 'baz3');
+                    return ['_route' => 'baz3'];
                 }
 
             }
 
             // baz4
             if (preg_match('#^/test/(?P<foo>[^/]++)/$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'baz4')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'baz4']), array ());
             }
 
             // baz5
             if (preg_match('#^/test/(?P<foo>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'baz5')), array ());
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'baz5']), array ());
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_baz5;
                 }
 
@@ -106,9 +106,9 @@ public function match($rawPathinfo)
 
             // baz.baz6
             if (preg_match('#^/test/(?P<foo>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'baz.baz6')), array ());
-                if (!in_array($requestMethod, array('PUT'))) {
-                    $allow = array_merge($allow, array('PUT'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'baz.baz6']), array ());
+                if (!in_array($requestMethod, ['PUT'])) {
+                    $allow = array_merge($allow, ['PUT']);
                     goto not_bazbaz6;
                 }
 
@@ -120,42 +120,42 @@ public function match($rawPathinfo)
 
         // quoter
         if (preg_match('#^/(?P<quoter>[\']+)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'quoter')), array ());
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'quoter']), array ());
         }
 
         // space
         if ('/spa ce' === $pathinfo) {
-            return array('_route' => 'space');
+            return ['_route' => 'space'];
         }
 
         if (0 === strpos($pathinfo, '/a')) {
             if (0 === strpos($pathinfo, '/a/b\'b')) {
                 // foo1
                 if (preg_match('#^/a/b\'b/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo1')), array ());
+                    return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo1']), array ());
                 }
 
                 // bar1
                 if (preg_match('#^/a/b\'b/(?P<bar>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($matches, array('_route' => 'bar1')), array ());
+                    return $this->mergeDefaults(array_replace($matches, ['_route' => 'bar1']), array ());
                 }
 
             }
 
             // overridden
             if (preg_match('#^/a/(?P<var>.*)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'overridden')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'overridden']), array ());
             }
 
             if (0 === strpos($pathinfo, '/a/b\'b')) {
                 // foo2
                 if (preg_match('#^/a/b\'b/(?P<foo1>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo2')), array ());
+                    return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo2']), array ());
                 }
 
                 // bar2
                 if (preg_match('#^/a/b\'b/(?P<bar1>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($matches, array('_route' => 'bar2')), array ());
+                    return $this->mergeDefaults(array_replace($matches, ['_route' => 'bar2']), array ());
                 }
 
             }
@@ -165,40 +165,40 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/multi')) {
             // helloWorld
             if (0 === strpos($pathinfo, '/multi/hello') && preg_match('#^/multi/hello(?:/(?P<who>[^/]++))?$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'helloWorld')), array (  'who' => 'World!',));
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'helloWorld']), array (  'who' => 'World!',));
             }
 
             // hey
             if ('/multi/hey/' === $pathinfo) {
-                return array('_route' => 'hey');
+                return ['_route' => 'hey'];
             }
 
             // overridden2
             if ('/multi/new' === $pathinfo) {
-                return array('_route' => 'overridden2');
+                return ['_route' => 'overridden2'];
             }
 
         }
 
         // foo3
         if (preg_match('#^/(?P<_locale>[^/]++)/b/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo3')), array ());
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo3']), array ());
         }
 
         // bar3
         if (preg_match('#^/(?P<_locale>[^/]++)/b/(?P<bar>[^/]++)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'bar3')), array ());
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'bar3']), array ());
         }
 
         if (0 === strpos($pathinfo, '/aba')) {
             // ababa
             if ('/ababa' === $pathinfo) {
-                return array('_route' => 'ababa');
+                return ['_route' => 'ababa'];
             }
 
             // foo4
             if (preg_match('#^/aba/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo4')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo4']), array ());
             }
 
         }
@@ -208,12 +208,12 @@ public function match($rawPathinfo)
         if (preg_match('#^a\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route1
             if ('/route1' === $pathinfo) {
-                return array('_route' => 'route1');
+                return ['_route' => 'route1'];
             }
 
             // route2
             if ('/c2/route2' === $pathinfo) {
-                return array('_route' => 'route2');
+                return ['_route' => 'route2'];
             }
 
         }
@@ -221,7 +221,7 @@ public function match($rawPathinfo)
         if (preg_match('#^b\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route3
             if ('/c2/route3' === $pathinfo) {
-                return array('_route' => 'route3');
+                return ['_route' => 'route3'];
             }
 
         }
@@ -229,7 +229,7 @@ public function match($rawPathinfo)
         if (preg_match('#^a\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route4
             if ('/route4' === $pathinfo) {
-                return array('_route' => 'route4');
+                return ['_route' => 'route4'];
             }
 
         }
@@ -237,36 +237,36 @@ public function match($rawPathinfo)
         if (preg_match('#^c\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route5
             if ('/route5' === $pathinfo) {
-                return array('_route' => 'route5');
+                return ['_route' => 'route5'];
             }
 
         }
 
         // route6
         if ('/route6' === $pathinfo) {
-            return array('_route' => 'route6');
+            return ['_route' => 'route6'];
         }
 
         if (preg_match('#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', $host, $hostMatches)) {
             if (0 === strpos($pathinfo, '/route1')) {
                 // route11
                 if ('/route11' === $pathinfo) {
-                    return $this->mergeDefaults(array_replace($hostMatches, array('_route' => 'route11')), array ());
+                    return $this->mergeDefaults(array_replace($hostMatches, ['_route' => 'route11']), array ());
                 }
 
                 // route12
                 if ('/route12' === $pathinfo) {
-                    return $this->mergeDefaults(array_replace($hostMatches, array('_route' => 'route12')), array (  'var1' => 'val',));
+                    return $this->mergeDefaults(array_replace($hostMatches, ['_route' => 'route12']), array (  'var1' => 'val',));
                 }
 
                 // route13
                 if (0 === strpos($pathinfo, '/route13') && preg_match('#^/route13/(?P<name>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($hostMatches, $matches, array('_route' => 'route13')), array ());
+                    return $this->mergeDefaults(array_replace($hostMatches, $matches, ['_route' => 'route13']), array ());
                 }
 
                 // route14
                 if (0 === strpos($pathinfo, '/route14') && preg_match('#^/route14/(?P<name>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($hostMatches, $matches, array('_route' => 'route14')), array (  'var1' => 'val',));
+                    return $this->mergeDefaults(array_replace($hostMatches, $matches, ['_route' => 'route14']), array (  'var1' => 'val',));
                 }
 
             }
@@ -276,35 +276,35 @@ public function match($rawPathinfo)
         if (preg_match('#^c\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route15
             if (0 === strpos($pathinfo, '/route15') && preg_match('#^/route15/(?P<name>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'route15')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'route15']), array ());
             }
 
         }
 
         // route16
         if (0 === strpos($pathinfo, '/route16') && preg_match('#^/route16/(?P<name>[^/]++)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'route16')), array (  'var1' => 'val',));
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'route16']), array (  'var1' => 'val',));
         }
 
         // route17
         if ('/route17' === $pathinfo) {
-            return array('_route' => 'route17');
+            return ['_route' => 'route17'];
         }
 
         // a
         if ('/a/a...' === $pathinfo) {
-            return array('_route' => 'a');
+            return ['_route' => 'a'];
         }
 
         if (0 === strpos($pathinfo, '/a/b')) {
             // b
             if (preg_match('#^/a/b/(?P<var>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'b')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'b']), array ());
             }
 
             // c
             if (0 === strpos($pathinfo, '/a/b/c') && preg_match('#^/a/b/c/(?P<var>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'c')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'c']), array ());
             }
 
         }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
index e430adb1fba6..2b80be57a83d 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($rawPathinfo)
     {
-        $allow = array();
+        $allow = [];
         $pathinfo = rawurldecode($rawPathinfo);
         $trimmedPathinfo = rtrim($pathinfo, '/');
         $context = $this->context;
@@ -31,7 +31,7 @@ public function match($rawPathinfo)
         if (0 === strpos($pathinfo, '/foo')) {
             // foo
             if (preg_match('#^/foo/(?P<bar>baz|symfony)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo')), array (  'def' => 'test',));
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo']), array (  'def' => 'test',));
             }
 
             // foofoo
@@ -44,9 +44,9 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/bar')) {
             // bar
             if (preg_match('#^/bar/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'bar')), array ());
-                if (!in_array($canonicalMethod, array('GET', 'HEAD'))) {
-                    $allow = array_merge($allow, array('GET', 'HEAD'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'bar']), array ());
+                if (!in_array($canonicalMethod, ['GET', 'HEAD'])) {
+                    $allow = array_merge($allow, ['GET', 'HEAD']);
                     goto not_bar;
                 }
 
@@ -56,9 +56,9 @@ public function match($rawPathinfo)
 
             // barhead
             if (0 === strpos($pathinfo, '/barhead') && preg_match('#^/barhead/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'barhead')), array ());
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'barhead']), array ());
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_barhead;
                 }
 
@@ -72,17 +72,17 @@ public function match($rawPathinfo)
             if (0 === strpos($pathinfo, '/test/baz')) {
                 // baz
                 if ('/test/baz' === $pathinfo) {
-                    return array('_route' => 'baz');
+                    return ['_route' => 'baz'];
                 }
 
                 // baz2
                 if ('/test/baz.html' === $pathinfo) {
-                    return array('_route' => 'baz2');
+                    return ['_route' => 'baz2'];
                 }
 
                 // baz3
                 if ('/test/baz3' === $trimmedPathinfo) {
-                    $ret = array('_route' => 'baz3');
+                    $ret = ['_route' => 'baz3'];
                     if ('/' === substr($pathinfo, -1)) {
                         // no-op
                     } elseif ('GET' !== $canonicalMethod) {
@@ -99,7 +99,7 @@ public function match($rawPathinfo)
 
             // baz4
             if (preg_match('#^/test/(?P<foo>[^/]++)/?$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'baz4')), array ());
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'baz4']), array ());
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -114,9 +114,9 @@ public function match($rawPathinfo)
 
             // baz5
             if (preg_match('#^/test/(?P<foo>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'baz5')), array ());
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'baz5']), array ());
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_baz5;
                 }
 
@@ -126,9 +126,9 @@ public function match($rawPathinfo)
 
             // baz.baz6
             if (preg_match('#^/test/(?P<foo>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'baz.baz6')), array ());
-                if (!in_array($requestMethod, array('PUT'))) {
-                    $allow = array_merge($allow, array('PUT'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'baz.baz6']), array ());
+                if (!in_array($requestMethod, ['PUT'])) {
+                    $allow = array_merge($allow, ['PUT']);
                     goto not_bazbaz6;
                 }
 
@@ -140,42 +140,42 @@ public function match($rawPathinfo)
 
         // quoter
         if (preg_match('#^/(?P<quoter>[\']+)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'quoter')), array ());
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'quoter']), array ());
         }
 
         // space
         if ('/spa ce' === $pathinfo) {
-            return array('_route' => 'space');
+            return ['_route' => 'space'];
         }
 
         if (0 === strpos($pathinfo, '/a')) {
             if (0 === strpos($pathinfo, '/a/b\'b')) {
                 // foo1
                 if (preg_match('#^/a/b\'b/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo1')), array ());
+                    return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo1']), array ());
                 }
 
                 // bar1
                 if (preg_match('#^/a/b\'b/(?P<bar>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($matches, array('_route' => 'bar1')), array ());
+                    return $this->mergeDefaults(array_replace($matches, ['_route' => 'bar1']), array ());
                 }
 
             }
 
             // overridden
             if (preg_match('#^/a/(?P<var>.*)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'overridden')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'overridden']), array ());
             }
 
             if (0 === strpos($pathinfo, '/a/b\'b')) {
                 // foo2
                 if (preg_match('#^/a/b\'b/(?P<foo1>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo2')), array ());
+                    return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo2']), array ());
                 }
 
                 // bar2
                 if (preg_match('#^/a/b\'b/(?P<bar1>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($matches, array('_route' => 'bar2')), array ());
+                    return $this->mergeDefaults(array_replace($matches, ['_route' => 'bar2']), array ());
                 }
 
             }
@@ -185,12 +185,12 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/multi')) {
             // helloWorld
             if (0 === strpos($pathinfo, '/multi/hello') && preg_match('#^/multi/hello(?:/(?P<who>[^/]++))?$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'helloWorld')), array (  'who' => 'World!',));
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'helloWorld']), array (  'who' => 'World!',));
             }
 
             // hey
             if ('/multi/hey' === $trimmedPathinfo) {
-                $ret = array('_route' => 'hey');
+                $ret = ['_route' => 'hey'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -205,30 +205,30 @@ public function match($rawPathinfo)
 
             // overridden2
             if ('/multi/new' === $pathinfo) {
-                return array('_route' => 'overridden2');
+                return ['_route' => 'overridden2'];
             }
 
         }
 
         // foo3
         if (preg_match('#^/(?P<_locale>[^/]++)/b/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo3')), array ());
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo3']), array ());
         }
 
         // bar3
         if (preg_match('#^/(?P<_locale>[^/]++)/b/(?P<bar>[^/]++)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'bar3')), array ());
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'bar3']), array ());
         }
 
         if (0 === strpos($pathinfo, '/aba')) {
             // ababa
             if ('/ababa' === $pathinfo) {
-                return array('_route' => 'ababa');
+                return ['_route' => 'ababa'];
             }
 
             // foo4
             if (preg_match('#^/aba/(?P<foo>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'foo4')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'foo4']), array ());
             }
 
         }
@@ -238,12 +238,12 @@ public function match($rawPathinfo)
         if (preg_match('#^a\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route1
             if ('/route1' === $pathinfo) {
-                return array('_route' => 'route1');
+                return ['_route' => 'route1'];
             }
 
             // route2
             if ('/c2/route2' === $pathinfo) {
-                return array('_route' => 'route2');
+                return ['_route' => 'route2'];
             }
 
         }
@@ -251,7 +251,7 @@ public function match($rawPathinfo)
         if (preg_match('#^b\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route3
             if ('/c2/route3' === $pathinfo) {
-                return array('_route' => 'route3');
+                return ['_route' => 'route3'];
             }
 
         }
@@ -259,7 +259,7 @@ public function match($rawPathinfo)
         if (preg_match('#^a\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route4
             if ('/route4' === $pathinfo) {
-                return array('_route' => 'route4');
+                return ['_route' => 'route4'];
             }
 
         }
@@ -267,36 +267,36 @@ public function match($rawPathinfo)
         if (preg_match('#^c\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route5
             if ('/route5' === $pathinfo) {
-                return array('_route' => 'route5');
+                return ['_route' => 'route5'];
             }
 
         }
 
         // route6
         if ('/route6' === $pathinfo) {
-            return array('_route' => 'route6');
+            return ['_route' => 'route6'];
         }
 
         if (preg_match('#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', $host, $hostMatches)) {
             if (0 === strpos($pathinfo, '/route1')) {
                 // route11
                 if ('/route11' === $pathinfo) {
-                    return $this->mergeDefaults(array_replace($hostMatches, array('_route' => 'route11')), array ());
+                    return $this->mergeDefaults(array_replace($hostMatches, ['_route' => 'route11']), array ());
                 }
 
                 // route12
                 if ('/route12' === $pathinfo) {
-                    return $this->mergeDefaults(array_replace($hostMatches, array('_route' => 'route12')), array (  'var1' => 'val',));
+                    return $this->mergeDefaults(array_replace($hostMatches, ['_route' => 'route12']), array (  'var1' => 'val',));
                 }
 
                 // route13
                 if (0 === strpos($pathinfo, '/route13') && preg_match('#^/route13/(?P<name>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($hostMatches, $matches, array('_route' => 'route13')), array ());
+                    return $this->mergeDefaults(array_replace($hostMatches, $matches, ['_route' => 'route13']), array ());
                 }
 
                 // route14
                 if (0 === strpos($pathinfo, '/route14') && preg_match('#^/route14/(?P<name>[^/]++)$#sD', $pathinfo, $matches)) {
-                    return $this->mergeDefaults(array_replace($hostMatches, $matches, array('_route' => 'route14')), array (  'var1' => 'val',));
+                    return $this->mergeDefaults(array_replace($hostMatches, $matches, ['_route' => 'route14']), array (  'var1' => 'val',));
                 }
 
             }
@@ -306,42 +306,42 @@ public function match($rawPathinfo)
         if (preg_match('#^c\\.example\\.com$#sDi', $host, $hostMatches)) {
             // route15
             if (0 === strpos($pathinfo, '/route15') && preg_match('#^/route15/(?P<name>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'route15')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'route15']), array ());
             }
 
         }
 
         // route16
         if (0 === strpos($pathinfo, '/route16') && preg_match('#^/route16/(?P<name>[^/]++)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'route16')), array (  'var1' => 'val',));
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'route16']), array (  'var1' => 'val',));
         }
 
         // route17
         if ('/route17' === $pathinfo) {
-            return array('_route' => 'route17');
+            return ['_route' => 'route17'];
         }
 
         // a
         if ('/a/a...' === $pathinfo) {
-            return array('_route' => 'a');
+            return ['_route' => 'a'];
         }
 
         if (0 === strpos($pathinfo, '/a/b')) {
             // b
             if (preg_match('#^/a/b/(?P<var>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'b')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'b']), array ());
             }
 
             // c
             if (0 === strpos($pathinfo, '/a/b/c') && preg_match('#^/a/b/c/(?P<var>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'c')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'c']), array ());
             }
 
         }
 
         // secure
         if ('/secure' === $pathinfo) {
-            $ret = array('_route' => 'secure');
+            $ret = ['_route' => 'secure'];
             $requiredSchemes = array (  'https' => 0,);
             if (!isset($requiredSchemes[$context->getScheme()])) {
                 if ('GET' !== $canonicalMethod) {
@@ -357,7 +357,7 @@ public function match($rawPathinfo)
 
         // nonsecure
         if ('/nonsecure' === $pathinfo) {
-            $ret = array('_route' => 'nonsecure');
+            $ret = ['_route' => 'nonsecure'];
             $requiredSchemes = array (  'http' => 0,);
             if (!isset($requiredSchemes[$context->getScheme()])) {
                 if ('GET' !== $canonicalMethod) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
index 67c4667467e6..03e540f69608 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($rawPathinfo)
     {
-        $allow = array();
+        $allow = [];
         $pathinfo = rawurldecode($rawPathinfo);
         $trimmedPathinfo = rtrim($pathinfo, '/');
         $context = $this->context;
@@ -31,19 +31,19 @@ public function match($rawPathinfo)
         if (0 === strpos($pathinfo, '/rootprefix')) {
             // static
             if ('/rootprefix/test' === $pathinfo) {
-                return array('_route' => 'static');
+                return ['_route' => 'static'];
             }
 
             // dynamic
             if (preg_match('#^/rootprefix/(?P<var>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'dynamic')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'dynamic']), array ());
             }
 
         }
 
         // with-condition
         if ('/with-condition' === $pathinfo && ($context->getMethod() == "GET")) {
-            return array('_route' => 'with-condition');
+            return ['_route' => 'with-condition'];
         }
 
         if ('/' === $pathinfo && !$allow) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
index ed07194a260e..2585f12fe1e0 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($rawPathinfo)
     {
-        $allow = array();
+        $allow = [];
         $pathinfo = rawurldecode($rawPathinfo);
         $trimmedPathinfo = rtrim($pathinfo, '/');
         $context = $this->context;
@@ -30,9 +30,9 @@ public function match($rawPathinfo)
 
         // just_head
         if ('/just_head' === $pathinfo) {
-            $ret = array('_route' => 'just_head');
-            if (!in_array($requestMethod, array('HEAD'))) {
-                $allow = array_merge($allow, array('HEAD'));
+            $ret = ['_route' => 'just_head'];
+            if (!in_array($requestMethod, ['HEAD'])) {
+                $allow = array_merge($allow, ['HEAD']);
                 goto not_just_head;
             }
 
@@ -42,9 +42,9 @@ public function match($rawPathinfo)
 
         // head_and_get
         if ('/head_and_get' === $pathinfo) {
-            $ret = array('_route' => 'head_and_get');
-            if (!in_array($canonicalMethod, array('HEAD', 'GET'))) {
-                $allow = array_merge($allow, array('HEAD', 'GET'));
+            $ret = ['_route' => 'head_and_get'];
+            if (!in_array($canonicalMethod, ['HEAD', 'GET'])) {
+                $allow = array_merge($allow, ['HEAD', 'GET']);
                 goto not_head_and_get;
             }
 
@@ -54,9 +54,9 @@ public function match($rawPathinfo)
 
         // get_and_head
         if ('/get_and_head' === $pathinfo) {
-            $ret = array('_route' => 'get_and_head');
-            if (!in_array($canonicalMethod, array('GET', 'HEAD'))) {
-                $allow = array_merge($allow, array('GET', 'HEAD'));
+            $ret = ['_route' => 'get_and_head'];
+            if (!in_array($canonicalMethod, ['GET', 'HEAD'])) {
+                $allow = array_merge($allow, ['GET', 'HEAD']);
                 goto not_get_and_head;
             }
 
@@ -66,9 +66,9 @@ public function match($rawPathinfo)
 
         // post_and_head
         if ('/post_and_head' === $pathinfo) {
-            $ret = array('_route' => 'post_and_head');
-            if (!in_array($requestMethod, array('POST', 'HEAD'))) {
-                $allow = array_merge($allow, array('POST', 'HEAD'));
+            $ret = ['_route' => 'post_and_head'];
+            if (!in_array($requestMethod, ['POST', 'HEAD'])) {
+                $allow = array_merge($allow, ['POST', 'HEAD']);
                 goto not_post_and_head;
             }
 
@@ -79,9 +79,9 @@ public function match($rawPathinfo)
         if (0 === strpos($pathinfo, '/put_and_post')) {
             // put_and_post
             if ('/put_and_post' === $pathinfo) {
-                $ret = array('_route' => 'put_and_post');
-                if (!in_array($requestMethod, array('PUT', 'POST'))) {
-                    $allow = array_merge($allow, array('PUT', 'POST'));
+                $ret = ['_route' => 'put_and_post'];
+                if (!in_array($requestMethod, ['PUT', 'POST'])) {
+                    $allow = array_merge($allow, ['PUT', 'POST']);
                     goto not_put_and_post;
                 }
 
@@ -91,9 +91,9 @@ public function match($rawPathinfo)
 
             // put_and_get_and_head
             if ('/put_and_post' === $pathinfo) {
-                $ret = array('_route' => 'put_and_get_and_head');
-                if (!in_array($canonicalMethod, array('PUT', 'GET', 'HEAD'))) {
-                    $allow = array_merge($allow, array('PUT', 'GET', 'HEAD'));
+                $ret = ['_route' => 'put_and_get_and_head'];
+                if (!in_array($canonicalMethod, ['PUT', 'GET', 'HEAD'])) {
+                    $allow = array_merge($allow, ['PUT', 'GET', 'HEAD']);
                     goto not_put_and_get_and_head;
                 }
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
index 2b22513a6179..ba0622343e5d 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($rawPathinfo)
     {
-        $allow = array();
+        $allow = [];
         $pathinfo = rawurldecode($rawPathinfo);
         $trimmedPathinfo = rtrim($pathinfo, '/');
         $context = $this->context;
@@ -31,30 +31,30 @@ public function match($rawPathinfo)
         if (0 === strpos($pathinfo, '/a')) {
             // a_first
             if ('/a/11' === $pathinfo) {
-                return array('_route' => 'a_first');
+                return ['_route' => 'a_first'];
             }
 
             // a_second
             if ('/a/22' === $pathinfo) {
-                return array('_route' => 'a_second');
+                return ['_route' => 'a_second'];
             }
 
             // a_third
             if ('/a/333' === $pathinfo) {
-                return array('_route' => 'a_third');
+                return ['_route' => 'a_third'];
             }
 
         }
 
         // a_wildcard
         if (preg_match('#^/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'a_wildcard')), array ());
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'a_wildcard']), array ());
         }
 
         if (0 === strpos($pathinfo, '/a')) {
             // a_fourth
             if ('/a/44' === $trimmedPathinfo) {
-                $ret = array('_route' => 'a_fourth');
+                $ret = ['_route' => 'a_fourth'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -69,7 +69,7 @@ public function match($rawPathinfo)
 
             // a_fifth
             if ('/a/55' === $trimmedPathinfo) {
-                $ret = array('_route' => 'a_fifth');
+                $ret = ['_route' => 'a_fifth'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -84,7 +84,7 @@ public function match($rawPathinfo)
 
             // a_sixth
             if ('/a/66' === $trimmedPathinfo) {
-                $ret = array('_route' => 'a_sixth');
+                $ret = ['_route' => 'a_sixth'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -101,13 +101,13 @@ public function match($rawPathinfo)
 
         // nested_wildcard
         if (0 === strpos($pathinfo, '/nested') && preg_match('#^/nested/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-            return $this->mergeDefaults(array_replace($matches, array('_route' => 'nested_wildcard')), array ());
+            return $this->mergeDefaults(array_replace($matches, ['_route' => 'nested_wildcard']), array ());
         }
 
         if (0 === strpos($pathinfo, '/nested/group')) {
             // nested_a
             if ('/nested/group/a' === $trimmedPathinfo) {
-                $ret = array('_route' => 'nested_a');
+                $ret = ['_route' => 'nested_a'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -122,7 +122,7 @@ public function match($rawPathinfo)
 
             // nested_b
             if ('/nested/group/b' === $trimmedPathinfo) {
-                $ret = array('_route' => 'nested_b');
+                $ret = ['_route' => 'nested_b'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -137,7 +137,7 @@ public function match($rawPathinfo)
 
             // nested_c
             if ('/nested/group/c' === $trimmedPathinfo) {
-                $ret = array('_route' => 'nested_c');
+                $ret = ['_route' => 'nested_c'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -155,7 +155,7 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/slashed/group')) {
             // slashed_a
             if ('/slashed/group' === $trimmedPathinfo) {
-                $ret = array('_route' => 'slashed_a');
+                $ret = ['_route' => 'slashed_a'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -170,7 +170,7 @@ public function match($rawPathinfo)
 
             // slashed_b
             if ('/slashed/group/b' === $trimmedPathinfo) {
-                $ret = array('_route' => 'slashed_b');
+                $ret = ['_route' => 'slashed_b'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -185,7 +185,7 @@ public function match($rawPathinfo)
 
             // slashed_c
             if 
10000
('/slashed/group/c' === $trimmedPathinfo) {
-                $ret = array('_route' => 'slashed_c');
+                $ret = ['_route' => 'slashed_c'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
index 48ecdf81c001..a668f09d9b60 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($rawPathinfo)
     {
-        $allow = array();
+        $allow = [];
         $pathinfo = rawurldecode($rawPathinfo);
         $trimmedPathinfo = rtrim($pathinfo, '/');
         $context = $this->context;
@@ -31,14 +31,14 @@ public function match($rawPathinfo)
         if (0 === strpos($pathinfo, '/trailing/simple')) {
             // simple_trailing_slash_no_methods
             if ('/trailing/simple/no-methods/' === $pathinfo) {
-                return array('_route' => 'simple_trailing_slash_no_methods');
+                return ['_route' => 'simple_trailing_slash_no_methods'];
             }
 
             // simple_trailing_slash_GET_method
             if ('/trailing/simple/get-method/' === $pathinfo) {
-                $ret = array('_route' => 'simple_trailing_slash_GET_method');
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                $ret = ['_route' => 'simple_trailing_slash_GET_method'];
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_simple_trailing_slash_GET_method;
                 }
 
@@ -48,9 +48,9 @@ public function match($rawPathinfo)
 
             // simple_trailing_slash_HEAD_method
             if ('/trailing/simple/head-method/' === $pathinfo) {
-                $ret = array('_route' => 'simple_trailing_slash_HEAD_method');
-                if (!in_array($requestMethod, array('HEAD'))) {
-                    $allow = array_merge($allow, array('HEAD'));
+                $ret = ['_route' => 'simple_trailing_slash_HEAD_method'];
+                if (!in_array($requestMethod, ['HEAD'])) {
+                    $allow = array_merge($allow, ['HEAD']);
                     goto not_simple_trailing_slash_HEAD_method;
                 }
 
@@ -60,9 +60,9 @@ public function match($rawPathinfo)
 
             // simple_trailing_slash_POST_method
             if ('/trailing/simple/post-method/' === $pathinfo) {
-                $ret = array('_route' => 'simple_trailing_slash_POST_method');
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = ['_route' => 'simple_trailing_slash_POST_method'];
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_simple_trailing_slash_POST_method;
                 }
 
@@ -75,14 +75,14 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/trailing/regex')) {
             // regex_trailing_slash_no_methods
             if (0 === strpos($pathinfo, '/trailing/regex/no-methods') && preg_match('#^/trailing/regex/no\\-methods/(?P<param>[^/]++)/$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_trailing_slash_no_methods')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_trailing_slash_no_methods']), array ());
             }
 
             // regex_trailing_slash_GET_method
             if (0 === strpos($pathinfo, '/trailing/regex/get-method') && preg_match('#^/trailing/regex/get\\-method/(?P<param>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_trailing_slash_GET_method')), array ());
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_trailing_slash_GET_method']), array ());
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_regex_trailing_slash_GET_method;
                 }
 
@@ -92,9 +92,9 @@ public function match($rawPathinfo)
 
             // regex_trailing_slash_HEAD_method
             if (0 === strpos($pathinfo, '/trailing/regex/head-method') && preg_match('#^/trailing/regex/head\\-method/(?P<param>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_trailing_slash_HEAD_method')), array ());
-                if (!in_array($requestMethod, array('HEAD'))) {
-                    $allow = array_merge($allow, array('HEAD'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_trailing_slash_HEAD_method']), array ());
+                if (!in_array($requestMethod, ['HEAD'])) {
+                    $allow = array_merge($allow, ['HEAD']);
                     goto not_regex_trailing_slash_HEAD_method;
                 }
 
@@ -104,9 +104,9 @@ public function match($rawPathinfo)
 
             // regex_trailing_slash_POST_method
             if (0 === strpos($pathinfo, '/trailing/regex/post-method') && preg_match('#^/trailing/regex/post\\-method/(?P<param>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_trailing_slash_POST_method')), array ());
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_trailing_slash_POST_method']), array ());
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_regex_trailing_slash_POST_method;
                 }
 
@@ -119,14 +119,14 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/not-trailing/simple')) {
             // simple_not_trailing_slash_no_methods
             if ('/not-trailing/simple/no-methods' === $pathinfo) {
-                return array('_route' => 'simple_not_trailing_slash_no_methods');
+                return ['_route' => 'simple_not_trailing_slash_no_methods'];
             }
 
             // simple_not_trailing_slash_GET_method
             if ('/not-trailing/simple/get-method' === $pathinfo) {
-                $ret = array('_route' => 'simple_not_trailing_slash_GET_method');
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                $ret = ['_route' => 'simple_not_trailing_slash_GET_method'];
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_simple_not_trailing_slash_GET_method;
                 }
 
@@ -136,9 +136,9 @@ public function match($rawPathinfo)
 
             // simple_not_trailing_slash_HEAD_method
             if ('/not-trailing/simple/head-method' === $pathinfo) {
-                $ret = array('_route' => 'simple_not_trailing_slash_HEAD_method');
-                if (!in_array($requestMethod, array('HEAD'))) {
-                    $allow = array_merge($allow, array('HEAD'));
+                $ret = ['_route' => 'simple_not_trailing_slash_HEAD_method'];
+                if (!in_array($requestMethod, ['HEAD'])) {
+                    $allow = array_merge($allow, ['HEAD']);
                     goto not_simple_not_trailing_slash_HEAD_method;
                 }
 
@@ -148,9 +148,9 @@ public function match($rawPathinfo)
 
             // simple_not_trailing_slash_POST_method
             if ('/not-trailing/simple/post-method' === $pathinfo) {
-                $ret = array('_route' => 'simple_not_trailing_slash_POST_method');
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = ['_route' => 'simple_not_trailing_slash_POST_method'];
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_simple_not_trailing_slash_POST_method;
                 }
 
@@ -163,14 +163,14 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/not-trailing/regex')) {
             // regex_not_trailing_slash_no_methods
             if (0 === strpos($pathinfo, '/not-trailing/regex/no-methods') && preg_match('#^/not\\-trailing/regex/no\\-methods/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_not_trailing_slash_no_methods')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_not_trailing_slash_no_methods']), array ());
             }
 
             // regex_not_trailing_slash_GET_method
             if (0 === strpos($pathinfo, '/not-trailing/regex/get-method') && preg_match('#^/not\\-trailing/regex/get\\-method/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_not_trailing_slash_GET_method')), array ());
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_not_trailing_slash_GET_method']), array ());
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_regex_not_trailing_slash_GET_method;
                 }
 
@@ -180,9 +180,9 @@ public function match($rawPathinfo)
 
             // regex_not_trailing_slash_HEAD_method
             if (0 === strpos($pathinfo, '/not-trailing/regex/head-method') && preg_match('#^/not\\-trailing/regex/head\\-method/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_not_trailing_slash_HEAD_method')), array ());
-                if (!in_array($requestMethod, array('HEAD'))) {
-                    $allow = array_merge($allow, array('HEAD'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_not_trailing_slash_HEAD_method']), array ());
+                if (!in_array($requestMethod, ['HEAD'])) {
+                    $allow = array_merge($allow, ['HEAD']);
                     goto not_regex_not_trailing_slash_HEAD_method;
                 }
 
@@ -192,9 +192,9 @@ public function match($rawPathinfo)
 
             // regex_not_trailing_slash_POST_method
             if (0 === strpos($pathinfo, '/not-trailing/regex/post-method') && preg_match('#^/not\\-trailing/regex/post\\-method/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_not_trailing_slash_POST_method')), array ());
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_not_trailing_slash_POST_method']), array ());
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_regex_not_trailing_slash_POST_method;
                 }
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
index 81d76ea4a047..c7f8852c5d4e 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($rawPathinfo)
     {
-        $allow = array();
+        $allow = [];
         $pathinfo = rawurldecode($rawPathinfo);
         $trimmedPathinfo = rtrim($pathinfo, '/');
         $context = $this->context;
@@ -31,7 +31,7 @@ public function match($rawPathinfo)
         if (0 === strpos($pathinfo, '/trailing/simple')) {
             // simple_trailing_slash_no_methods
             if ('/trailing/simple/no-methods' === $trimmedPathinfo) {
-                $ret = array('_route' => 'simple_trailing_slash_no_methods');
+                $ret = ['_route' => 'simple_trailing_slash_no_methods'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -46,7 +46,7 @@ public function match($rawPathinfo)
 
             // simple_trailing_slash_GET_method
             if ('/trailing/simple/get-method' === $trimmedPathinfo) {
-                $ret = array('_route' => 'simple_trailing_slash_GET_method');
+                $ret = ['_route' => 'simple_trailing_slash_GET_method'];
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -55,8 +55,8 @@ public function match($rawPathinfo)
                     return array_replace($ret, $this->redirect($rawPathinfo.'/', 'simple_trailing_slash_GET_method'));
                 }
 
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_simple_trailing_slash_GET_method;
                 }
 
@@ -66,9 +66,9 @@ public function match($rawPathinfo)
 
             // simple_trailing_slash_HEAD_method
             if ('/trailing/simple/head-method/' === $pathinfo) {
-                $ret = array('_route' => 'simple_trailing_slash_HEAD_method');
-                if (!in_array($requestMethod, array('HEAD'))) {
-                    $allow = array_merge($allow, array('HEAD'));
+                $ret = ['_route' => 'simple_trailing_slash_HEAD_method'];
+                if (!in_array($requestMethod, ['HEAD'])) {
+                    $allow = array_merge($allow, ['HEAD']);
                     goto not_simple_trailing_slash_HEAD_method;
                 }
 
@@ -78,9 +78,9 @@ public function match($rawPathinfo)
 
             // simple_trailing_slash_POST_method
             if ('/trailing/simple/post-method/' === $pathinfo) {
-                $ret = array('_route' => 'simple_trailing_slash_POST_method');
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = ['_route' => 'simple_trailing_slash_POST_method'];
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_simple_trailing_slash_POST_method;
                 }
 
@@ -93,7 +93,7 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/trailing/regex')) {
             // regex_trailing_slash_no_methods
             if (0 === strpos($pathinfo, '/trailing/regex/no-methods') && preg_match('#^/trailing/regex/no\\-methods/(?P<param>[^/]++)/?$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_trailing_slash_no_methods')), array ());
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_trailing_slash_no_methods']), array ());
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -108,7 +108,7 @@ public function match($rawPathinfo)
 
             // regex_trailing_slash_GET_method
             if (0 === strpos($pathinfo, '/trailing/regex/get-method') && preg_match('#^/trailing/regex/get\\-method/(?P<param>[^/]++)/?$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_trailing_slash_GET_method')), array ());
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_trailing_slash_GET_method']), array ());
                 if ('/' === substr($pathinfo, -1)) {
                     // no-op
                 } elseif ('GET' !== $canonicalMethod) {
@@ -117,8 +117,8 @@ public function match($rawPathinfo)
                     return array_replace($ret, $this->redirect($rawPathinfo.'/', 'regex_trailing_slash_GET_method'));
                 }
 
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_regex_trailing_slash_GET_method;
                 }
 
@@ -128,9 +128,9 @@ public function match($rawPathinfo)
 
             // regex_trailing_slash_HEAD_method
             if (0 === strpos($pathinfo, '/trailing/regex/head-method') && preg_match('#^/trailing/regex/head\\-method/(?P<param>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_trailing_slash_HEAD_method')), array ());
-                if (!in_array($requestMethod, array('HEAD'))) {
-                    $allow = array_merge($allow, array('HEAD'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_trailing_slash_HEAD_method']), array ());
+                if (!in_array($requestMethod, ['HEAD'])) {
+                    $allow = array_merge($allow, ['HEAD']);
                     goto not_regex_trailing_slash_HEAD_method;
                 }
 
@@ -140,9 +140,9 @@ public function match($rawPathinfo)
 
             // regex_trailing_slash_POST_method
             if (0 === strpos($pathinfo, '/trailing/regex/post-method') && preg_match('#^/trailing/regex/post\\-method/(?P<param>[^/]++)/$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_trailing_slash_POST_method')), array ());
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_trailing_slash_POST_method']), array ());
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_regex_trailing_slash_POST_method;
                 }
 
@@ -155,14 +155,14 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/not-trailing/simple')) {
             // simple_not_trailing_slash_no_methods
             if ('/not-trailing/simple/no-methods' === $pathinfo) {
-                return array('_route' => 'simple_not_trailing_slash_no_methods');
+                return ['_route' => 'simple_not_trailing_slash_no_methods'];
             }
 
             // simple_not_trailing_slash_GET_method
             if ('/not-trailing/simple/get-method' === $pathinfo) {
-                $ret = array('_route' => 'simple_not_trailing_slash_GET_method');
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                $ret = ['_route' => 'simple_not_trailing_slash_GET_method'];
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_simple_not_trailing_slash_GET_method;
                 }
 
@@ -172,9 +172,9 @@ public function match($rawPathinfo)
 
             // simple_not_trailing_slash_HEAD_method
             if ('/not-trailing/simple/head-method' === $pathinfo) {
-                $ret = array('_route' => 'simple_not_trailing_slash_HEAD_method');
-                if (!in_array($requestMethod, array('HEAD'))) {
-                    $allow = array_merge($allow, array('HEAD'));
+                $ret = ['_route' => 'simple_not_trailing_slash_HEAD_method'];
+                if (!in_array($requestMethod, ['HEAD'])) {
+                    $allow = array_merge($allow, ['HEAD']);
                     goto not_simple_not_trailing_slash_HEAD_method;
                 }
 
@@ -184,9 +184,9 @@ public function match($rawPathinfo)
 
             // simple_not_trailing_slash_POST_method
             if ('/not-trailing/simple/post-method' === $pathinfo) {
-                $ret = array('_route' => 'simple_not_trailing_slash_POST_method');
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = ['_route' => 'simple_not_trailing_slash_POST_method'];
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_simple_not_trailing_slash_POST_method;
                 }
 
@@ -199,14 +199,14 @@ public function match($rawPathinfo)
         elseif (0 === strpos($pathinfo, '/not-trailing/regex')) {
             // regex_not_trailing_slash_no_methods
             if (0 === strpos($pathinfo, '/not-trailing/regex/no-methods') && preg_match('#^/not\\-trailing/regex/no\\-methods/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-                return $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_not_trailing_slash_no_methods')), array ());
+                return $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_not_trailing_slash_no_methods']), array ());
             }
 
             // regex_not_trailing_slash_GET_method
             if (0 === strpos($pathinfo, '/not-trailing/regex/get-method') && preg_match('#^/not\\-trailing/regex/get\\-method/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_not_trailing_slash_GET_method')), array ());
-                if (!in_array($canonicalMethod, array('GET'))) {
-                    $allow = array_merge($allow, array('GET'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_not_trailing_slash_GET_method']), array ());
+                if (!in_array($canonicalMethod, ['GET'])) {
+                    $allow = array_merge($allow, ['GET']);
                     goto not_regex_not_trailing_slash_GET_method;
                 }
 
@@ -216,9 +216,9 @@ public function match($rawPathinfo)
 
             // regex_not_trailing_slash_HEAD_method
             if (0 === strpos($pathinfo, '/not-trailing/regex/head-method') && preg_match('#^/not\\-trailing/regex/head\\-method/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_not_trailing_slash_HEAD_method')), array ());
-                if (!in_array($requestMethod, array('HEAD'))) {
-                    $allow = array_merge($allow, array('HEAD'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_not_trailing_slash_HEAD_method']), array ());
+                if (!in_array($requestMethod, ['HEAD'])) {
+                    $allow = array_merge($allow, ['HEAD']);
                     goto not_regex_not_trailing_slash_HEAD_method;
                 }
 
@@ -228,9 +228,9 @@ public function match($rawPathinfo)
 
             // regex_not_trailing_slash_POST_method
             if (0 === strpos($pathinfo, '/not-trailing/regex/post-method') && preg_match('#^/not\\-trailing/regex/post\\-method/(?P<param>[^/]++)$#sD', $pathinfo, $matches)) {
-                $ret = $this->mergeDefaults(array_replace($matches, array('_route' => 'regex_not_trailing_slash_POST_method')), array ());
-                if (!in_array($requestMethod, array('POST'))) {
-                    $allow = array_merge($allow, array('POST'));
+                $ret = $this->mergeDefaults(array_replace($matches, ['_route' => 'regex_not_trailing_slash_POST_method']), array ());
+                if (!in_array($requestMethod, ['POST'])) {
+                    $allow = array_merge($allow, ['POST']);
                     goto not_regex_not_trailing_slash_POST_method;
                 }
 
diff --git a/src/Symfony/Component/VarDumper/Tests/Fixtures/Twig.php b/src/Symfony/Component/VarDumper/Tests/Fixtures/Twig.php
index fe2542929b10..8b84d820fcf7 100644
--- a/src/Symfony/Component/VarDumper/Tests/Fixtures/Twig.php
+++ b/src/Symfony/Component/VarDumper/Tests/Fixtures/Twig.php
@@ -11,11 +11,11 @@ public function __construct(Twig\Environment $env = null, $path = null)
             parent::__construct($env);
         }
         $this->parent = false;
-        $this->blocks = array();
+        $this->blocks = [];
         $this->path = $path;
     }
 
-    protected function doDisplay(array $context, array $blocks = array())
+    protected function doDisplay(array $context, array $blocks = [])
     {
         // line 2
         throw new \Exception('Foobar');
@@ -28,7 +28,7 @@ public function getTemplateName()
 
     public function getDebugInfo()
     {
-        return array(20 => 1, 21 => 2);
+        return [20 => 1, 21 => 2];
     }
 
     public function getSourceContext()
diff --git a/src/Symfony/Component/VarDumper/Tests/Fixtures/dumb-var.php b/src/Symfony/Component/VarDumper/Tests/Fixtures/dumb-var.php
index 59ee19bdad12..de51cebc219c 100644
--- a/src/Symfony/Component/VarDumper/Tests/Fixtures/dumb-var.php
+++ b/src/Symfony/Component/VarDumper/Tests/Fixtures/dumb-var.php
@@ -14,19 +14,19 @@ class DumbFoo
 
 $g = fopen(__FILE__, 'r');
 
-$var = array(
+$var = [
     'number' => 1, null,
     'const' => 1.1, true, false, NAN, INF, -INF, PHP_INT_MAX,
     'str' => "déjà\n", "\xE9\x00",
-    '[]' => array(),
+    '[]' => [],
     'res' => $g,
     'obj' => $foo,
     'closure' => function ($a, \PDO &$b = null) {},
     'line' => __LINE__ - 1,
-    'nobj' => array((object) array()),
-);
+    'nobj' => [(object) []],
+];
 
-$r = array();
+$r = [];
 $r[] = &$r;
 
 $var['recurs'] = &$r;

From 25240831e2b5a436161491e812007b80faa6cf3c Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 13:52:19 +0100
Subject: [PATCH 039/103] fixed CS in ExpressionLanguage fixtures

---
 src/Symfony/Component/ExpressionLanguage/Compiler.php     | 4 ++--
 .../Component/ExpressionLanguage/Node/ArrayNode.php       | 4 ++--
 .../ExpressionLanguage/Tests/Node/ArrayNodeTest.php       | 2 +-
 .../ExpressionLanguage/Tests/Node/BinaryNodeTest.php      | 8 ++++----
 .../ExpressionLanguage/Tests/Node/ConstantNodeTest.php    | 2 +-
 .../ExpressionLanguage/Tests/Node/GetAttrNodeTest.php     | 2 +-
 6 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/Symfony/Component/ExpressionLanguage/Compiler.php b/src/Symfony/Component/ExpressionLanguage/Compiler.php
index acfb6184a499..282e82dfb852 100644
--- a/src/Symfony/Component/ExpressionLanguage/Compiler.php
+++ b/src/Symfony/Component/ExpressionLanguage/Compiler.php
@@ -125,7 +125,7 @@ public function repr($value)
         } elseif (\is_bool($value)) {
             $this->raw($value ? 'true' : 'false');
         } elseif (\is_array($value)) {
-            $this->raw('array(');
+            $this->raw('[');
             $first = true;
             foreach ($value as $key => $value) {
                 if (!$first) {
@@ -136,7 +136,7 @@ public function repr($value)
                 $this->raw(' => ');
                 $this->repr($value);
             }
-            $this->raw(')');
+            $this->raw(']');
         } else {
             $this->string($value);
         }
diff --git a/src/Symfony/Component/ExpressionLanguage/Node/ArrayNode.php b/src/Symfony/Component/ExpressionLanguage/Node/ArrayNode.php
index 2dd0627c6d72..921319a74474 100644
--- a/src/Symfony/Component/ExpressionLanguage/Node/ArrayNode.php
+++ b/src/Symfony/Component/ExpressionLanguage/Node/ArrayNode.php
@@ -41,9 +41,9 @@ public function addElement(Node $value, Node $key = null)
      */
     public function compile(Compiler $compiler)
     {
-        $compiler->raw('array(');
+        $compiler->raw('[');
         $this->compileArguments($compiler);
-        $compiler->raw(')');
+        $compiler->raw(']');
     }
 
     public function evaluate($functions, $values)
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArrayNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArrayNodeTest.php
index 82fbfc67b2dc..3d03d837e960 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArrayNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ArrayNodeTest.php
@@ -38,7 +38,7 @@ public function getEvaluateData()
     public function getCompileData()
     {
         return [
-            ['array("b" => "a", 0 => "b")', $this->getArrayNode()],
+            ['["b" => "a", 0 => "b"]', $this->getArrayNode()],
         ];
     }
 
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/BinaryNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/BinaryNodeTest.php
index 4a3802085806..b45a1e57b9b1 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/BinaryNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/BinaryNodeTest.php
@@ -104,10 +104,10 @@ public function getCompileData()
             ['pow(5, 2)', new BinaryNode('**', new ConstantNode(5), new ConstantNode(2))],
             ['("a" . "b")', new BinaryNode('~', new ConstantNode('a'), new ConstantNode('b'))],
 
-            ['in_array("a", array(0 => "a", 1 => "b"))', new BinaryNode('in', new ConstantNode('a'), $array)],
-            ['in_array("c", array(0 => "a", 1 => "b"))', new BinaryNode('in', new ConstantNode('c'), $array)],
-            ['!in_array("c", array(0 => "a", 1 => "b"))', new BinaryNode('not in', new ConstantNode('c'), $array)],
-            ['!in_array("a", array(0 => "a", 1 => "b"))', new BinaryNode('not in', new ConstantNode('a'), $array)],
+            ['in_array("a", [0 => "a", 1 => "b"])', new BinaryNode('in', new ConstantNode('a'), $array)],
+            ['in_array("c", [0 => "a", 1 => "b"])', new BinaryNode('in', new ConstantNode('c'), $array)],
+            ['!in_array("c", [0 => "a", 1 => "b"])', new BinaryNode('not in', new ConstantNode('c'), $array)],
+            ['!in_array("a", [0 => "a", 1 => "b"])', new BinaryNode('not in', new ConstantNode('a'), $array)],
 
             ['range(1, 3)', new BinaryNode('..', new ConstantNode(1), new ConstantNode(3))],
 
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConstantNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConstantNodeTest.php
index 9add04f27e9f..fee9f5bff430 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConstantNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/ConstantNodeTest.php
@@ -37,7 +37,7 @@ public function getCompileData()
             ['3', new ConstantNode(3)],
             ['3.3', new ConstantNode(3.3)],
             ['"foo"', new ConstantNode('foo')],
-            ['array(0 => 1, "b" => "a")', new ConstantNode([1, 'b' => 'a'])],
+            ['[0 => 1, "b" => "a"]', new ConstantNode([1, 'b' => 'a'])],
         ];
     }
 
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/Node/GetAttrNodeTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/Node/GetAttrNodeTest.php
index 59ee98deb5f9..c790f33acc33 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/Node/GetAttrNodeTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/Node/GetAttrNodeTest.php
@@ -39,7 +39,7 @@ public function getCompileData()
 
             ['$foo->foo', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::PROPERTY_CALL), ['foo' => new Obj()]],
 
-            ['$foo->foo(array("b" => "a", 0 => "b"))', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::METHOD_CALL), ['foo' => new Obj()]],
+            ['$foo->foo(["b" => "a", 0 => "b"])', new GetAttrNode(new NameNode('foo'), new ConstantNode('foo'), $this->getArrayNode(), GetAttrNode::METHOD_CALL), ['foo' => new Obj()]],
             ['$foo[$index]', new GetAttrNode(new NameNode('foo'), new NameNode('index'), $this->getArrayNode(), GetAttrNode::ARRAY_CALL)],
         ];
     }

From 1429267f9cf4225f4f6f47e9f4c896e960735f13 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 14:03:22 +0100
Subject: [PATCH 040/103] fixed short array CS in comments

---
 .../CompilerPass/RegisterMappingsPass.php     |  2 +-
 .../DeprecationErrorHandler/default.phpt      |  2 +-
 .../acme/lib/deprecation_riddled.php          |  2 +-
 .../shutdown_deprecations.phpt                |  2 +-
 .../weak_vendors_on_non_vendor.phpt           |  2 +-
 src/Symfony/Bridge/PhpUnit/bin/simple-phpunit | 18 +++---
 src/Symfony/Bridge/Twig/AppVariable.php       |  2 +-
 src/Symfony/Bridge/Twig/CHANGELOG.md          |  8 +--
 .../Twig/Extension/WebLinkExtension.php       | 12 ++--
 .../Command/CacheClearCommand.php             |  2 +-
 .../Kernel/MicroKernelTrait.php               |  4 +-
 .../Templating/Helper/FormHelper.php          |  8 +--
 .../Resources/views/translation.html.php      | 20 +++---
 .../Custom/_name_c_entry_label.html.php       |  2 +-
 .../Custom/_names_entry_label.html.php        |  2 +-
 .../Component/Cache/Adapter/PdoAdapter.php    |  2 +-
 .../Component/Cache/Simple/PdoCache.php       |  2 +-
 .../Component/Cache/Traits/MemcachedTrait.php |  2 +-
 .../Component/Cache/Traits/PhpArrayTrait.php  |  4 +-
 src/Symfony/Component/Config/CHANGELOG.md     |  2 +-
 .../Component/Config/Definition/ArrayNode.php |  4 +-
 .../Builder/ArrayNodeDefinition.php           | 12 ++--
 .../Config/Definition/PrototypedArrayNode.php | 32 +++++-----
 .../Definition/Builder/ExprBuilderTest.php    |  2 +-
 .../Definition/PrototypedArrayNodeTest.php    | 52 +++++++--------
 .../Resource/ReflectionClassResourceTest.php  | 10 +--
 .../Component/Console/Input/ArrayInput.php    |  2 +-
 .../Console/Input/InputDefinition.php         |  4 +-
 .../Tests/Input/InputDefinitionTest.php       |  2 +-
 .../Component/Debug/Resources/ext/README.md   | 20 +++---
 .../Debug/Tests/DebugClassLoaderTest.php      | 64 +++++++++----------
 .../DependencyInjection/ContainerBuilder.php  |  4 +-
 .../ServiceSubscriberInterface.php            | 12 ++--
 src/Symfony/Component/DomCrawler/Crawler.php  |  2 +-
 .../DomCrawler/FormFieldRegistry.php          |  6 +-
 .../ContainerAwareEventDispatcher.php         |  2 +-
 .../EventSubscriberInterface.php              |  6 +-
 .../Component/Filesystem/Filesystem.php       |  2 +-
 src/Symfony/Component/Finder/Glob.php         |  2 +-
 .../Form/ChoiceList/ChoiceListInterface.php   | 32 +++++-----
 src/Symfony/Component/Form/Forms.php          | 14 ++--
 .../DateTimeToStringTransformerTest.php       |  4 +-
 .../Form/Tests/Util/StringUtilTest.php        |  4 +-
 src/Symfony/Component/Form/Util/FormUtil.php  |  2 +-
 .../Storage/Handler/PdoSessionHandler.php     |  2 +-
 .../Session/Storage/NativeSessionStorage.php  |  2 +-
 .../HttpFoundation/Tests/ResponseTest.php     |  2 +-
 .../Controller/ControllerResolver.php         |  2 +-
 .../Inflector/Tests/InflectorTest.php         |  6 +-
 .../Reader/BundleEntryReaderInterface.php     |  2 +-
 .../AbstractNumberFormatterTest.php           |  2 +-
 src/Symfony/Component/Process/PhpProcess.php  |  2 +-
 src/Symfony/Component/Process/Process.php     |  8 +--
 .../Component/Process/Tests/ProcessTest.php   |  4 +-
 src/Symfony/Component/Routing/CHANGELOG.md    | 12 ++--
 .../Generator/Dumper/PhpGeneratorDumper.php   |  6 +-
 .../Component/Routing/RouteCompiler.php       |  2 +-
 .../Component/Routing/Tests/RouteTest.php     |  4 +-
 .../Security/Core/User/UserInterface.php      |  2 +-
 .../Security/Guard/AuthenticatorInterface.php |  6 +-
 .../Guard/GuardAuthenticatorInterface.php     |  6 +-
 .../Security/Http/FirewallMapInterface.php    |  2 +-
 .../Serializer/Encoder/ChainDecoder.php       |  2 +-
 .../Serializer/Encoder/ChainEncoder.php       |  4 +-
 .../Serializer/Encoder/XmlEncoder.php         |  2 +-
 .../Normalizer/ArrayDenormalizer.php          |  2 +-
 .../Component/Serializer/Serializer.php       | 16 ++---
 .../Catalogue/AbstractOperation.php           | 24 +++----
 .../Translation/Loader/ArrayLoader.php        |  2 +-
 .../Translation/Util/ArrayConverter.php       |  2 +-
 .../Validator/Constraints/GroupSequence.php   |  2 +-
 .../Context/ExecutionContextInterface.php     |  2 +-
 .../VarDumper/Tests/Dumper/CliDumperTest.php  |  2 +-
 73 files changed, 264 insertions(+), 264 deletions(-)

diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
index 8b95cb02b867..860a6c7c20d0 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
@@ -50,7 +50,7 @@ abstract class RegisterMappingsPass implements CompilerPassInterface
     /**
      * List of potential container parameters that hold the object manager name
      * to register the mappings with the correct metadata driver, for example
-     * array('acme.manager', 'doctrine.default_entity_manager').
+     * ['acme.manager', 'doctrine.default_entity_manager'].
      *
      * @var string[]
      */
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
index 1070b19a4371..9bc155a7cdeb 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
@@ -25,7 +25,7 @@ class Test
 {
     public static function getGroups()
     {
-        return array();
+        return [];
     }
 }
 EOPHP
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/deprecation_riddled.php b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/deprecation_riddled.php
index 16a58246d211..5229a7a7cc6f 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/deprecation_riddled.php
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/fake_vendor/acme/lib/deprecation_riddled.php
@@ -7,7 +7,7 @@ class Test
 {
     public static function getGroups()
     {
-        return array();
+        return [];
     }
 }
 EOPHP
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
index a0bf3e2ba761..703db6fd19fa 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
@@ -25,7 +25,7 @@ class Test
 {
     public static function getGroups()
     {
-        return array();
+        return [];
     }
 }
 EOPHP
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/weak_vendors_on_non_vendor.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/weak_vendors_on_non_vendor.phpt
index e20c7adf6ba1..b37b623cf297 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/weak_vendors_on_non_vendor.phpt
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/weak_vendors_on_non_vendor.phpt
@@ -25,7 +25,7 @@ class Test
 {
     public static function getGroups()
     {
-        return array();
+        return [];
     }
 }
 EOPHP
diff --git a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
index af60eb0f8c88..a8528d737518 100755
--- a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
+++ b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
@@ -83,7 +83,7 @@ if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit") || md5_file(__
     $prevRoot = getenv('COMPOSER_ROOT_VERSION');
     putenv("COMPOSER_ROOT_VERSION=$PHPUNIT_VERSION.99");
     // --no-suggest is not in the list to keep compat with composer 1.0, which is shipped with Ubuntu 16.04LTS
-    $exit = proc_close(proc_open("$COMPOSER install --no-dev --prefer-dist --no-progress --ansi", array(), $p, getcwd(), null, array('bypass_shell' => true)));
+    $exit = proc_close(proc_open("$COMPOSER install --no-dev --prefer-dist --no-progress --ansi", [], $p, getcwd(), null, ['bypass_shell' => true]));
     putenv('COMPOSER_ROOT_VERSION'.(false !== $prevRoot ? '='.$prevRoot : ''));
     if ($exit) {
         exit($exit);
@@ -116,9 +116,9 @@ EOPHP
 }
 
 global $argv, $argc;
-$argv = isset($_SERVER['argv']) ? $_SERVER['argv'] : array();
+$argv = isset($_SERVER['argv']) ? $_SERVER['argv'] : [];
 $argc = isset($_SERVER['argc']) ? $_SERVER['argc'] : 0;
-$components = array();
+$components = [];
 $cmd = array_map('escapeshellarg', $argv);
 $exit = 0;
 
@@ -153,7 +153,7 @@ if ('\\' === DIRECTORY_SEPARATOR) {
 
 if ($components) {
     $skippedTests = isset($_SERVER['SYMFONY_PHPUNIT_SKIPPED_TESTS']) ? $_SERVER['SYMFONY_PHPUNIT_SKIPPED_TESTS'] : false;
-    $runningProcs = array();
+    $runningProcs = [];
 
     foreach ($components as $component) {
         // Run phpunit tests in parallel
@@ -164,7 +164,7 @@ if ($components) {
 
         $c = escapeshellarg($component);
 
-        if ($proc = proc_open(sprintf($cmd, $c, " > $c/phpunit.stdout 2> $c/phpunit.stderr"), array(), $pipes)) {
+        if ($proc = proc_open(sprintf($cmd, $c, " > $c/phpunit.stdout 2> $c/phpunit.stderr"), [], $pipes)) {
             $runningProcs[$component] = $proc;
         } else {
             $exit = 1;
@@ -174,7 +174,7 @@ if ($components) {
 
     while ($runningProcs) {
         usleep(300000);
-        $terminatedProcs = array();
+        $terminatedProcs = [];
         foreach ($runningProcs as $component => $proc) {
             $procStatus = proc_get_status($proc);
             if (!$procStatus['running']) {
@@ -185,7 +185,7 @@ if ($components) {
         }
 
         foreach ($terminatedProcs as $component => $procStatus) {
-            foreach (array('out', 'err') as $file) {
+            foreach (['out', 'err'] as $file) {
                 $file = "$component/phpunit.std$file";
                 readfile($file);
                 unlink($file);
@@ -195,7 +195,7 @@ if ($components) {
             // STATUS_STACK_BUFFER_OVERRUN (-1073740791/0xC0000409)
             // STATUS_ACCESS_VIOLATION (-1073741819/0xC0000005)
             // STATUS_HEAP_CORRUPTION (-1073740940/0xC0000374)
-            if ($procStatus && ('\\' !== DIRECTORY_SEPARATOR || !extension_loaded('apcu') || !filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN) || !in_array($procStatus, array(-1073740791, -1073741819, -1073740940)))) {
+            if ($procStatus && ('\\' !== DIRECTORY_SEPARATOR || !extension_loaded('apcu') || !filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN) || !in_array($procStatus, [-1073740791, -1073741819, -1073740940]))) {
                 $exit = $procStatus;
                 echo "\033[41mKO\033[0m $component\n\n";
             } else {
@@ -207,7 +207,7 @@ if ($components) {
     if (!class_exists('SymfonyBlacklistSimplePhpunit', false)) {
         class SymfonyBlacklistSimplePhpunit {}
     }
-    array_splice($argv, 1, 0, array('--colors=always'));
+    array_splice($argv, 1, 0, ['--colors=always']);
     $_SERVER['argv'] = $argv;
     $_SERVER['argc'] = ++$argc;
     include "$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit";
diff --git a/src/Symfony/Bridge/Twig/AppVariable.php b/src/Symfony/Bridge/Twig/AppVariable.php
index d3fb5a55b3b8..21020270a06e 100644
--- a/src/Symfony/Bridge/Twig/AppVariable.php
+++ b/src/Symfony/Bridge/Twig/AppVariable.php
@@ -150,7 +150,7 @@ public function getDebug()
      * Returns some or all the existing flash messages:
      *  * getFlashes() returns all the flash messages
      *  * getFlashes('notice') returns a simple array with flash messages of that type
-     *  * getFlashes(array('notice', 'error')) returns a nested array of type => messages.
+     *  * getFlashes(['notice', 'error']) returns a nested array of type => messages.
      *
      * @return array
      */
diff --git a/src/Symfony/Bridge/Twig/CHANGELOG.md b/src/Symfony/Bridge/Twig/CHANGELOG.md
index 8d5d6f56b677..4ccde3894715 100644
--- a/src/Symfony/Bridge/Twig/CHANGELOG.md
+++ b/src/Symfony/Bridge/Twig/CHANGELOG.md
@@ -33,7 +33,7 @@ CHANGELOG
    use Symfony\Bridge\Twig\Form\TwigRendererEngine;
 
    // ...
-   $rendererEngine = new TwigRendererEngine(array('form_div_layout.html.twig'));
+   $rendererEngine = new TwigRendererEngine(['form_div_layout.html.twig']);
    $rendererEngine->setEnvironment($twig);
    $twig->addExtension(new FormExtension(new TwigRenderer($rendererEngine, $csrfTokenManager)));
    ```
@@ -42,13 +42,13 @@ CHANGELOG
 
    ```php
    // ...
-   $rendererEngine = new TwigRendererEngine(array('form_div_layout.html.twig'), $twig);
+   $rendererEngine = new TwigRendererEngine(['form_div_layout.html.twig'], $twig);
    // require Twig 1.30+
-   $twig->addRuntimeLoader(new \Twig\RuntimeLoader\FactoryRuntimeLoader(array(
+   $twig->addRuntimeLoader(new \Twig\RuntimeLoader\FactoryRuntimeLoader([
        TwigRenderer::class => function () use ($rendererEngine, $csrfTokenManager) {
            return new TwigRenderer($rendererEngine, $csrfTokenManager);
        },
-   )));
+   ]));
    $twig->addExtension(new FormExtension());
    ```
  * Deprecated the `TwigRendererEngineInterface` interface.
diff --git a/src/Symfony/Bridge/Twig/Extension/WebLinkExtension.php b/src/Symfony/Bridge/Twig/Extension/WebLinkExtension.php
index cf00b4c53af2..0ca519ee7242 100644
--- a/src/Symfony/Bridge/Twig/Extension/WebLinkExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/WebLinkExtension.php
@@ -51,7 +51,7 @@ public function getFunctions()
      *
      * @param string $uri        The relation URI
      * @param string $rel        The relation type (e.g. "preload", "prefetch", "prerender" or "dns-prefetch")
-     * @param array  $attributes The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")
+     * @param array  $attributes The attributes of this link (e.g. "['as' => true]", "['pr' => 0.5]")
      *
      * @return string The relation URI
      */
@@ -76,7 +76,7 @@ public function link($uri, $rel, array $attributes = [])
      * Preloads a resource.
      *
      * @param string $uri        A public path
-     * @param array  $attributes The attributes of this link (e.g. "array('as' => true)", "array('crossorigin' => 'use-credentials')")
+     * @param array  $attributes The attributes of this link (e.g. "['as' => true]", "['crossorigin' => 'use-credentials']")
      *
      * @return string The path of the asset
      */
@@ -89,7 +89,7 @@ public function preload($uri, array $attributes = [])
      * Resolves a resource origin as early as possible.
      *
      * @param string $uri        A public path
-     * @param array  $attributes The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")
+     * @param array  $attributes The attributes of this link (e.g. "['as' => true]", "['pr' => 0.5]")
      *
      * @return string The path of the asset
      */
@@ -102,7 +102,7 @@ public function dnsPrefetch($uri, array $attributes = [])
      * Initiates a early connection to a resource (DNS resolution, TCP handshake, TLS negotiation).
      *
      * @param string $uri        A public path
-     * @param array  $attributes The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")
+     * @param array  $attributes The attributes of this link (e.g. "['as' => true]", "['pr' => 0.5]")
      *
      * @return string The path of the asset
      */
@@ -115,7 +115,7 @@ public function preconnect($uri, array $attributes = [])
      * Indicates to the client that it should prefetch this resource.
      *
      * @param string $uri        A public path
-     * @param array  $attributes The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")
+     * @param array  $attributes The attributes of this link (e.g. "['as' => true]", "['pr' => 0.5]")
      *
      * @return string The path of the asset
      */
@@ -128,7 +128,7 @@ public function prefetch($uri, array $attributes = [])
      * Indicates to the client that it should prerender this resource .
      *
      * @param string $uri        A public path
-     * @param array  $attributes The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")
+     * @param array  $attributes The attributes of this link (e.g. "['as' => true]", "['pr' => 0.5]")
      *
      * @return string The path of the asset
      */
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
index 9f3c47197792..14f0dc28cfe5 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
@@ -338,7 +338,7 @@ protected function buildContainer()
 
             // filter container's resources, removing reference to temp kernel file
             \$resources = \$container->getResources();
-            \$filteredResources = array();
+            \$filteredResources = [];
             foreach (\$resources as \$resource) {
                 if ((string) \$resource !== __FILE__) {
                     \$filteredResources[] = \$resource;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
index 3d4e7b9afe1a..a8f3ce954030 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
@@ -39,9 +39,9 @@ abstract protected function configureRoutes(RouteCollectionBuilder $routes);
      *
      * You can register extensions:
      *
-     *     $c->loadFromExtension('framework', array(
+     *     $c->loadFromExtension('framework', [
      *         'secret' => '%secret%'
-     *     ));
+     *     ]);
      *
      * Or services:
      *
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php
index 9e602b2aeb87..686777f74557 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php
@@ -61,9 +61,9 @@ public function setTheme(FormView $view, $themes, $useDefaultThemes = true)
      *
      * You can pass options during the call:
      *
-     *     <?php echo view['form']->form($form, array('attr' => array('class' => 'foo'))) ?>
+     *     <?php echo view['form']->form($form, ['attr' => ['class' => 'foo']]) ?>
      *
-     *     <?php echo view['form']->form($form, array('separator' => '+++++')) ?>
+     *     <?php echo view['form']->form($form, ['separator' => '+++++']) ?>
      *
      * This method is mainly intended for prototyping purposes. If you want to
      * control the layout of a form in a more fine-grained manner, you are
@@ -124,9 +124,9 @@ public function end(FormView $view, array $variables = [])
      *
      * You can pass options during the call:
      *
-     *     <?php echo $view['form']->widget($form, array('attr' => array('class' => 'foo'))) ?>
+     *     <?php echo $view['form']->widget($form, ['attr' => ['class' => 'foo']]) ?>
      *
-     *     <?php echo $view['form']->widget($form, array('separator' => '+++++')) ?>
+     *     <?php echo $view['form']->widget($form, ['separator' => '+++++']) ?>
      *
      * @param FormView $view      The view for which to render the widget
      * @param array    $variables Additional variables passed to the template
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Resources/views/translation.html.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Resources/views/translation.html.php
index 1dcc5536c19b..b8a20d246a09 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Resources/views/translation.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Resources/views/translation.html.php
@@ -29,21 +29,21 @@
 <?php echo $view['translator']->transChoice(
     '{0} There is no apples|{1} There is one apple|]1,Inf[ There are %count% apples',
     10,
-    array('%count%' => 10)
+    ['%count%' => 10]
 ) ?>
 
-<?php echo $view['translator']->trans('other-domain-test-no-params-short-array', array(), 'not_messages'); ?>
+<?php echo $view['translator']->trans('other-domain-test-no-params-short-array', [], 'not_messages'); ?>
 
-<?php echo $view['translator']->trans('other-domain-test-no-params-long-array', array(), 'not_messages'); ?>
+<?php echo $view['translator']->trans('other-domain-test-no-params-long-array', [], 'not_messages'); ?>
 
-<?php echo $view['translator']->trans('other-domain-test-params-short-array', array('foo' => 'bar'), 'not_messages'); ?>
+<?php echo $view['translator']->trans('other-domain-test-params-short-array', ['foo' => 'bar'], 'not_messages'); ?>
 
-<?php echo $view['translator']->trans('other-domain-test-params-long-array', array('foo' => 'bar'), 'not_messages'); ?>
+<?php echo $view['translator']->trans('other-domain-test-params-long-array', ['foo' => 'bar'], 'not_messages'); ?>
 
-<?php echo $view['translator']->transChoice('other-domain-test-trans-choice-short-array-%count%', 10, array('%count%' => 10), 'not_messages'); ?>
+<?php echo $view['translator']->transChoice('other-domain-test-trans-choice-short-array-%count%', 10, ['%count%' => 10], 'not_messages'); ?>
 
-<?php echo $view['translator']->transChoice('other-domain-test-trans-choice-long-array-%count%', 10, array('%count%' => 10), 'not_messages'); ?>
+<?php echo $view['translator']->transChoice('other-domain-test-trans-choice-long-array-%count%', 10, ['%count%' => 10], 'not_messages'); ?>
 
-<?php echo $view['translator']->trans('typecast', array('a' => (int) '123'), 'not_messages'); ?>
-<?php echo $view['translator']->transChoice('msg1', 10 + 1, array(), 'not_messages'); ?>
-<?php echo $view['translator']->transChoice('msg2', ceil(4.5), array(), 'not_messages'); ?>
+<?php echo $view['translator']->trans('typecast', ['a' => (int) '123'], 'not_messages'); ?>
+<?php echo $view['translator']->transChoice('msg1', 10 + 1, [], 'not_messages'); ?>
+<?php echo $view['translator']->transChoice('msg2', ceil(4.5), [], 'not_messages'); ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_name_c_entry_label.html.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_name_c_entry_label.html.php
index 05240035c023..4ad7e75ddcc1 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_name_c_entry_label.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_name_c_entry_label.html.php
@@ -1,2 +1,2 @@
 <?php if (!$label) { $label = $view['form']->humanize($name); } ?>
-<label>Custom name label: <?php echo $view->escape($view['translator']->trans($label, array(), $translation_domain)) ?></label>
+<label>Custom name label: <?php echo $view->escape($view['translator']->trans($label, [], $translation_domain)) ?></label>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_names_entry_label.html.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_names_entry_label.html.php
index e165a429a5ff..71de9d4631de 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_names_entry_label.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_names_entry_label.html.php
@@ -1,4 +1,4 @@
 <?php if (!$label) {
     $label = $view['form']->humanize($name);
 } ?>
-<label>Custom label: <?php echo $view->escape($view['translator']->trans($label, array(), $translation_domain)) ?></label>
+<label>Custom label: <?php echo $view->escape($view['translator']->trans($label, [], $translation_domain)) ?></label>
diff --git a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
index 62c4d175b15c..590386794257 100644
--- a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
@@ -35,7 +35,7 @@ class PdoAdapter extends AbstractAdapter implements PruneableInterface
      *  * db_time_col: The column where to store the timestamp [default: item_time]
      *  * db_username: The username when lazy-connect [default: '']
      *  * db_password: The password when lazy-connect [default: '']
-     *  * db_connection_options: An array of driver-specific connection options [default: array()]
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
      *
      * @param \PDO|Connection|string $connOrDsn       A \PDO or Connection instance or DSN string or null
      * @param string                 $namespace
diff --git a/src/Symfony/Component/Cache/Simple/PdoCache.php b/src/Symfony/Component/Cache/Simple/PdoCache.php
index 4faf10edf5c0..c92e049a1ba1 100644
--- a/src/Symfony/Component/Cache/Simple/PdoCache.php
+++ b/src/Symfony/Component/Cache/Simple/PdoCache.php
@@ -33,7 +33,7 @@ class PdoCache extends AbstractCache implements PruneableInterface
      *  * db_time_col: The column where to store the timestamp [default: item_time]
      *  * db_username: The username when lazy-connect [default: '']
      *  * db_password: The password when lazy-connect [default: '']
-     *  * db_connection_options: An array of driver-specific connection options [default: array()]
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
      *
      * @param \PDO|Connection|string $connOrDsn       A \PDO or Connection instance or DSN string or null
      * @param string                 $namespace
diff --git a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
index 3a073e772c94..6c2190ab754a 100644
--- a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
+++ b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
@@ -64,7 +64,7 @@ private function init(\Memcached $client, $namespace, $defaultLifetime)
      *
      * Examples for servers:
      * - 'memcached://user:pass@localhost?weight=33'
-     * - array(array('localhost', 11211, 33))
+     * - [['localhost', 11211, 33]]
      *
      * @param array[]|string|string[] $servers An array of servers, a DSN, or an array of DSNs
      * @param array                   $options An array of options
diff --git a/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php b/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
index 9845701ab4b0..e96462abf7e5 100644
--- a/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
@@ -60,7 +60,7 @@ public function warmUp(array $values)
 
 // This file has been auto-generated by the Symfony Cache Component.
 
-return array(
+return [
 
 
 EOF;
@@ -97,7 +97,7 @@ public function warmUp(array $values)
             $dump .= var_export($key, true).' => '.var_export($value, true).",\n";
         }
 
-        $dump .= "\n);\n";
+        $dump .= "\n];\n";
         $dump = str_replace("' . \"\\0\" . '", "\0", $dump);
 
         $tmpFile = uniqid($this->file, true);
diff --git a/src/Symfony/Component/Config/CHANGELOG.md b/src/Symfony/Component/Config/CHANGELOG.md
index 7813ac53ede4..6cb610c47869 100644
--- a/src/Symfony/Component/Config/CHANGELOG.md
+++ b/src/Symfony/Component/Config/CHANGELOG.md
@@ -34,7 +34,7 @@ The edge case of defining just one value for nodes of type Enum is now allowed:
 $rootNode
     ->children()
         ->enumNode('variable')
-            ->values(array('value'))
+            ->values(['value'])
         ->end()
     ->end()
 ;
diff --git a/src/Symfony/Component/Config/Definition/ArrayNode.php b/src/Symfony/Component/Config/Definition/ArrayNode.php
index 4e39ea769904..70baa5a0ab2c 100644
--- a/src/Symfony/Component/Config/Definition/ArrayNode.php
+++ b/src/Symfony/Component/Config/Definition/ArrayNode.php
@@ -82,7 +82,7 @@ public function getChildren()
     /**
      * Sets the xml remappings that should be performed.
      *
-     * @param array $remappings An array of the form array(array(string, string))
+     * @param array $remappings An array of the form [[string, string]]
      */
     public function setXmlRemappings(array $remappings)
     {
@@ -92,7 +92,7 @@ public function setXmlRemappings(array $remappings)
     /**
      * Gets the xml remappings that should be performed.
      *
-     * @return array an array of the form array(array(string, string))
+     * @return array an array of the form [[string, string]]
      */
     public function getXmlRemappings()
     {
diff --git a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
index 55d695c7cb4d..9837e5d88321 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
@@ -214,15 +214,15 @@ public function fixXmlConfig($singular, $plural = null)
      * to be the key of the particular item. For example, if "id" is the
      * "key", then:
      *
-     *     array(
-     *         array('id' => 'my_name', 'foo' => 'bar'),
-     *     );
+     *     [
+     *         ['id' => 'my_name', 'foo' => 'bar'],
+     *     ];
      *
      *   becomes
      *
-     *     array(
-     *         'my_name' => array('foo' => 'bar'),
-     *     );
+     *     [
+     *         'my_name' => ['foo' => 'bar'],
+     *     ];
      *
      * If you'd like "'id' => 'my_name'" to still be present in the resulting
      * array, then you can set the second argument of this method to false.
diff --git a/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php b/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
index 15769a34f128..f00cfcaa8349 100644
--- a/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
+++ b/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
@@ -53,15 +53,15 @@ public function setMinNumberOfElements($number)
      * to be the key of the particular item. For example, if "id" is the
      * "key", then:
      *
-     *     array(
-     *         array('id' => 'my_name', 'foo' => 'bar'),
-     *     );
+     *     [
+     *         ['id' => 'my_name', 'foo' => 'bar'],
+     *     ];
      *
      *  becomes
      *
-     *      array(
-     *          'my_name' => array('foo' => 'bar'),
-     *      );
+     *      [
+     *          'my_name' => ['foo' => 'bar'],
+     *      ];
      *
      * If you'd like "'id' => 'my_name'" to still be present in the resulting
      * array, then you can set the second argument of this method to false.
@@ -335,30 +335,30 @@ protected function mergeValues($leftSide, $rightSide)
      *
      * For example, assume $this->keyAttribute is 'name' and the value array is as follows:
      *
-     *     array(
-     *         array(
+     *     [
+     *         [
      *             'name' => 'name001',
      *             'value' => 'value001'
-     *         )
-     *     )
+     *         ]
+     *     ]
      *
      * Now, the key is 0 and the child node is:
      *
-     *     array(
+     *     [
      *        'name' => 'name001',
      *        'value' => 'value001'
-     *     )
+     *     ]
      *
      * When normalizing the value array, the 'name' element will removed from the child node
      * and its value becomes the new key of the child node:
      *
-     *     array(
-     *         'name001' => array('value' => 'value001')
-     *     )
+     *     [
+     *         'name001' => ['value' => 'value001']
+     *     ]
      *
      * Now only 'value' element is left in the child node which can be further simplified into a string:
      *
-     *     array('name001' => 'value001')
+     *     ['name001' => 'value001']
      *
      * Now, the key becomes 'name001' and the child node becomes 'value001' and
      * the prototype of child node 'name001' should be a ScalarNode instead of an ArrayNode instance.
diff --git 
10000
a/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php
index d58d42e0a305..191bf1c0b5fd 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/ExprBuilderTest.php
@@ -227,7 +227,7 @@ protected function getTestBuilder()
      *
      * @param TreeBuilder $testBuilder The tree builder to finalize
      * @param array       $config      The config you want to use for the finalization, if nothing provided
-     *                                 a simple array('key'=>'value') will be used
+     *                                 a simple ['key'=>'value'] will be used
      *
      * @return array The finalized config values
      */
diff --git a/src/Symfony/Component/Config/Tests/Definition/PrototypedArrayNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/PrototypedArrayNodeTest.php
index 485b1321c820..6478bd12db99 100644
--- a/src/Symfony/Component/Config/Tests/Definition/PrototypedArrayNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/PrototypedArrayNodeTest.php
@@ -66,12 +66,12 @@ public function testRemappedKeysAreUnset()
      * The above should finally be mapped to an array that looks like this
      * (because "id" is the key attribute).
      *
-     *     array(
-     *         'things' => array(
+     *     [
+     *         'things' => [
      *             'option1' => 'foo',
      *             'option2' => 'bar',
-     *         )
-     *     )
+     *         ]
+     *     ]
      */
     public function testMappedAttributeKeyIsRemoved()
     {
@@ -191,11 +191,11 @@ protected function getPrototypeNodeWithDefaultChildren()
      * The above should finally be mapped to an array that looks like this
      * (because "id" is the key attribute).
      *
-     *     array(
-     *         'things' => array(
+     *     [
+     *         'things' => [
      *             'option1' => 'value1'
-     *         )
-     *     )
+     *         ]
+     *     ]
      *
      * It's also possible to mix 'value-only' and 'non-value-only' elements in the array.
      *
@@ -206,15 +206,15 @@ protected function getPrototypeNodeWithDefaultChildren()
      *
      * The above should finally be mapped to an array as follows
      *
-     * array(
-     *     'things' => array(
+     * [
+     *     'things' => [
      *         'option1' => 'value1',
-     *         'option2' => array(
+     *         'option2' => [
      *             'value' => 'value2',
      *             'foo' => 'foo2'
-     *         )
-     *     )
-     * )
+     *         ]
+     *     ]
+     * ]
      *
      * The 'value' element can also be ArrayNode:
      *
@@ -229,14 +229,14 @@ protected function getPrototypeNodeWithDefaultChildren()
      *
      * The above should be finally be mapped to an array as follows
      *
-     * array(
-     *     'things' => array(
-     *         'option1' => array(
+     * [
+     *     'things' => [
+     *         'option1' => [
      *             'foo' => 'foo1',
      *             'bar' => 'bar1'
-     *         )
-     *     )
-     * )
+     *         ]
+     *     ]
+     * ]
      *
      * If using VariableNode for value node, it's also possible to mix different types of value nodes:
      *
@@ -252,15 +252,15 @@ protected function getPrototypeNodeWithDefaultChildren()
      *
      * The above should be finally mapped to an array as follows
      *
-     * array(
-     *     'things' => array(
-     *         'option1' => array(
+     * [
+     *     'things' => [
+     *         'option1' => [
      *             'foo' => 'foo1',
      *             'bar' => 'bar1'
-     *         ),
+     *         ],
      *         'option2' => 'value2'
-     *     )
-     * )
+     *     ]
+     * ]
      *
      *
      * @dataProvider getDataForKeyRemovedLeftValueOnly
diff --git a/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php b/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
index e4f8bed87c86..23f2cc567c4c 100644
--- a/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
+++ b/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
@@ -71,7 +71,7 @@ public function testHashedSignature($changeExpected, $changedLine, $changedCode)
 /* 2*/  {
 /* 3*/      const FOO = 123;
 /* 4*/
-/* 5*/      public $pub = array();
+/* 5*/      public $pub = [];
 /* 6*/
 /* 7*/      protected $prot;
 /* 8*/
@@ -79,7 +79,7 @@ public function testHashedSignature($changeExpected, $changedLine, $changedCode)
 /*10*/
 /*11*/      public function pub($arg = null) {}
 /*12*/
-/*13*/      protected function prot($a = array()) {}
+/*13*/      protected function prot($a = []) {}
 /*14*/
 /*15*/      private function priv() {}
 /*16*/  }
@@ -119,8 +119,8 @@ public function provideHashedSignature()
         yield [1, 3, 'const FOO = 456;'];
         yield [1, 3, 'const BAR = 123;'];
         yield [1, 4, '/** pub docblock */'];
-        yield [1, 5, 'protected $pub = array();'];
-        yield [1, 5, 'public $pub = array(123);'];
+        yield [1, 5, 'protected $pub = [];'];
+        yield [1, 5, 'public $pub = [123];'];
         yield [1, 6, '/** prot docblock */'];
         yield [1, 7, 'private $prot;'];
         yield [0, 8, '/** priv docblock */'];
@@ -134,7 +134,7 @@ public function provideHashedSignature()
         }
         yield [0, 11, "public function pub(\$arg = null) {\nreturn 123;\n}"];
         yield [1, 12, '/** prot docblock */'];
-        yield [1, 13, 'protected function prot($a = array(123)) {}'];
+        yield [1, 13, 'protected function prot($a = [123]) {}'];
         yield [0, 14, '/** priv docblock */'];
         yield [0, 15, ''];
     }
diff --git a/src/Symfony/Component/Console/Input/ArrayInput.php b/src/Symfony/Component/Console/Input/ArrayInput.php
index 72706ddbbf14..cf09ff45ecb4 100644
--- a/src/Symfony/Component/Console/Input/ArrayInput.php
+++ b/src/Symfony/Component/Console/Input/ArrayInput.php
@@ -19,7 +19,7 @@
  *
  * Usage:
  *
- *     $input = new ArrayInput(array('name' => 'foo', '--bar' => 'foobar'));
+ *     $input = new ArrayInput(['name' => 'foo', '--bar' => 'foobar']);
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
diff --git a/src/Symfony/Component/Console/Input/InputDefinition.php b/src/Symfony/Component/Console/Input/InputDefinition.php
index 65860e460d08..9dc1c09b94e3 100644
--- a/src/Symfony/Component/Console/Input/InputDefinition.php
+++ b/src/Symfony/Component/Console/Input/InputDefinition.php
@@ -19,10 +19,10 @@
  *
  * Usage:
  *
- *     $definition = new InputDefinition(array(
+ *     $definition = new InputDefinition([
  *         new InputArgument('name', InputArgument::REQUIRED),
  *         new InputOption('foo', 'f', InputOption::VALUE_REQUIRED),
- *     ));
+ *     ]);
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
diff --git a/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php b/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
index 197869767de0..5fdcb981c607 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
@@ -186,7 +186,7 @@ public function testGetArgumentDefaults()
             new InputArgument('foo1', InputArgument::OPTIONAL),
             new InputArgument('foo2', InputArgument::OPTIONAL, '', 'default'),
             new InputArgument('foo3', InputArgument::OPTIONAL | InputArgument::IS_ARRAY),
-        //  new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', array(1, 2)),
+        //  new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', [1, 2]),
         ]);
         $this->assertEquals(['foo1' => null, 'foo2' => 'default', 'foo3' => []], $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
 
diff --git a/src/Symfony/Component/Debug/Resources/ext/README.md b/src/Symfony/Component/Debug/Resources/ext/README.md
index 25dccf076647..2df00ecd2997 100644
--- a/src/Symfony/Component/Debug/Resources/ext/README.md
+++ b/src/Symfony/Component/Debug/Resources/ext/README.md
@@ -25,41 +25,41 @@ function symfony_zval_info($key, $array, $options = 0)
         return null;
     }
 
-    $info = array(
+    $info = [
         'type' => gettype($array[$key]),
         'zval_hash' => /* hashed memory address of $array[$key] */,
         'zval_refcount' => /* internal zval refcount of $array[$key] */,
         'zval_isref' => /* is_ref status of $array[$key] */,
-    );
+    ];
 
     switch ($info['type']) {
         case 'object':
-            $info += array(
+            $info += [
                 'object_class' => get_class($array[$key]),
                 'object_refcount' => /* internal object refcount of $array[$key] */,
                 'object_hash' => spl_object_hash($array[$key]),
                 'object_handle' => /* internal object handle $array[$key] */,
-            );
+            ];
             break;
 
         case 'resource':
-            $info += array(
+            $info += [
                 'resource_handle' => (int) $array[$key],
                 'resource_type' => get_resource_type($array[$key]),
                 'resource_refcount' => /* internal resource refcount of $array[$key] */,
-            );
+            ];
             break;
 
         case 'array':
-            $info += array(
+            $info += [
                 'array_count' => count($array[$key]),
-            );
+            ];
             break;
 
         case 'string':
-            $info += array(
+            $info += [
                 'strlen' => strlen($array[$key]),
-            );
+            ];
             break;
     }
 
diff --git a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
index e9ce535ee71f..b1c3c2b581d5 100644
--- a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
+++ b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
@@ -28,14 +28,14 @@ protected function setUp()
     {
         $this->errorReporting = error_reporting(E_ALL);
         $this->loader = new ClassLoader();
-        spl_autoload_register(array($this->loader, 'loadClass'), true, true);
+        spl_autoload_register([$this->loader, 'loadClass'], true, true);
         DebugClassLoader::enable();
     }
 
     protected function tearDown()
     {
         DebugClassLoader::disable();
-        spl_autoload_unregister(array($this->loader, 'loadClass'));
+        spl_autoload_unregister([$this->loader, 'loadClass']);
         error_reporting($this->errorReporting);
     }
 
@@ -45,7 +45,7 @@ public function testIdempotence()
 
         $functions = spl_autoload_functions();
         foreach ($functions as $function) {
-            if (is_array($function) && $function[0] instanceof DebugClassLoader) {
+            if (\is_array($function) && $function[0] instanceof DebugClassLoader) {
                 $reflClass = new \ReflectionClass($function[0]);
                 $reflProp = $reflClass->getProperty('classLoader');
                 $reflProp->setAccessible(true);
@@ -81,7 +81,7 @@ public function testUnsilencing()
         if (\PHP_VERSION_ID >= 70000) {
             $this->markTestSkipped('PHP7 throws exceptions, unsilencing is not required anymore.');
         }
-        if (defined('HHVM_VERSION')) {
+        if (\defined('HHVM_VERSION')) {
             $this->markTestSkipped('HHVM is not handled in this test case.');
         }
 
@@ -106,7 +106,7 @@ public function testStacking()
         if (class_exists('Symfony\Component\Debug\Exception\ContextErrorException', false)) {
             $this->markTestSkipped('The ContextErrorException class is already loaded.');
         }
-        if (defined('HHVM_VERSION')) {
+        if (\defined('HHVM_VERSION')) {
             $this->markTestSkipped('HHVM is not handled in this test case.');
         }
 
@@ -192,7 +192,7 @@ public function testDeprecatedSuper($class, $super, $type)
     {
         set_error_handler(function () { return false; });
         $e = error_reporting(0);
-        trigger_error('', E_USER_DEPRECATED);
+        @trigger_error('', E_USER_DEPRECATED);
 
         class_exists('Test\\'.__NAMESPACE__.'\\'.$class, true);
 
@@ -202,20 +202,20 @@ class_exists('Test\\'.__NAMESPACE__.'\\'.$class, true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_DEPRECATED,
             'message' => 'The "Test\Symfony\Component\Debug\Tests\\'.$class.'" class '.$type.' "Symfony\Component\Debug\Tests\Fixtures\\'.$super.'" that is deprecated but this is a test deprecation notice.',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
 
     public function provideDeprecatedSuper()
     {
-        return array(
-            array('DeprecatedInterfaceClass', 'DeprecatedInterface', 'implements'),
-            array('DeprecatedParentClass', 'DeprecatedClass', 'extends'),
-        );
+        return [
+            ['DeprecatedInterfaceClass', 'DeprecatedInterface', 'implements'],
+            ['DeprecatedParentClass', 'DeprecatedClass', 'extends'],
+        ];
     }
 
     public function testInterfaceExtendsDeprecatedInterface()
@@ -232,10 +232,10 @@ class_exists('Test\\'.__NAMESPACE__.'\\NonDeprecatedInterfaceClass', true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_NOTICE,
             'message' => '',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
@@ -254,10 +254,10 @@ class_exists('Symfony\Bridge\Debug\Tests\Fixtures\ExtendsDeprecatedParent', true
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_NOTICE,
             'message' => '',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
@@ -280,10 +280,10 @@ class_exists('Test\\'.__NAMESPACE__.'\\Float', true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_DEPRECATED,
             'message' => 'The "Test\Symfony\Component\Debug\Tests\Float" class uses the reserved name "Float", it will break on PHP 7 and higher',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
@@ -302,17 +302,17 @@ class_exists('Test\\'.__NAMESPACE__.'\\ExtendsFinalClass', true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_DEPRECATED,
             'message' => 'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass" class is considered final since version 3.3. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass".',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
 
     public function testExtendedFinalMethod()
     {
-        $deprecations = array();
+        $deprecations = [];
         set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
         $e = error_reporting(E_USER_DEPRECATED);
 
@@ -321,10 +321,10 @@ class_exists(__NAMESPACE__.'\\Fixtures\\ExtendedFinalMethod', true);
         error_reporting($e);
         restore_error_handler();
 
-        $xError = array(
+        $xError = [
             'The "Symfony\Component\Debug\Tests\Fixtures\FinalMethod::finalMethod()" method is considered final since version 3.3. It may change without further notice as of its next major version. You should not extend it from "Symfony\Component\Debug\Tests\Fixtures\ExtendedFinalMethod".',
             'The "Symfony\Component\Debug\Tests\Fixtures\FinalMethod::finalMethod2()" method is considered final. It may change without further notice as of its next major version. You should not extend it from "Symfony\Component\Debug\Tests\Fixtures\ExtendedFinalMethod".',
-        );
+        ];
 
         $this->assertSame($xError, $deprecations);
     }
@@ -343,12 +343,12 @@ class_exists('Test\\'.__NAMESPACE__.'\\ExtendsAnnotatedClass', true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $this->assertSame(array('type' => E_USER_NOTICE, 'message' => ''), $lastError);
+        $this->assertSame(['type' => E_USER_NOTICE, 'message' => ''], $lastError);
     }
 
     public function testInternalsUse()
     {
-        $deprecations = array();
+        $deprecations = [];
         set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
         $e = error_reporting(E_USER_DEPRECATED);
 
@@ -357,17 +357,17 @@ class_exists('Test\\'.__NAMESPACE__.'\\ExtendsInternals', true);
         error_reporting($e);
         restore_error_handler();
 
-        $this->assertSame($deprecations, array(
+        $this->assertSame($deprecations, [
             'The "Symfony\Component\Debug\Tests\Fixtures\InternalInterface" interface is considered internal. It may change without further notice. You should not use it from "Test\Symfony\Component\Debug\Tests\ExtendsInternalsParent".',
             'The "Symfony\Component\Debug\Tests\Fixtures\InternalClass" class is considered internal since version 3.4. It may change without further notice. You should not use it from "Test\Symfony\Component\Debug\Tests\ExtendsInternalsParent".',
             'The "Symfony\Component\Debug\Tests\Fixtures\InternalTrait" trait is considered internal. It may change without further notice. You should not use it from "Test\Symfony\Component\Debug\Tests\ExtendsInternals".',
             'The "Symfony\Component\Debug\Tests\Fixtures\InternalClass::internalMethod()" method is considered internal since version 3.4. It may change without further notice. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsInternals".',
-        ));
+        ]);
     }
 
     public function testUseTraitWithInternalMethod()
     {
-        $deprecations = array();
+        $deprecations = [];
         set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
         $e = error_reporting(E_USER_DEPRECATED);
 
@@ -376,7 +376,7 @@ class_exists('Test\\'.__NAMESPACE__.'\\UseTraitWithInternalMethod', true);
         error_reporting($e);
         restore_error_handler();
 
-        $this->assertSame(array(), $deprecations);
+        $this->assertSame([], $deprecations);
     }
 }
 
@@ -388,12 +388,12 @@ public function loadClass($class)
 
     public function getClassMap()
     {
-        return array(__NAMESPACE__.'\Fixtures\NotPSR0bis' => __DIR__.'/Fixtures/notPsr0Bis.php');
+        return [__NAMESPACE__.'\Fixtures\NotPSR0bis' => __DIR__.'/Fixtures/notPsr0Bis.php'];
     }
 
     public function findFile($class)
     {
-        $fixtureDir = __DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR;
+        $fixtureDir = __DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR;
 
         if (__NAMESPACE__.'\TestingUnsilencing' === $class) {
             eval('-- parse error --');
@@ -402,7 +402,7 @@ public function findFile($class)
         } elseif (__NAMESPACE__.'\TestingCaseMismatch' === $class) {
             eval('namespace '.__NAMESPACE__.'; class TestingCaseMisMatch {}');
         } elseif (__NAMESPACE__.'\Fixtures\Psr4CaseMismatch' === $class) {
-            return $fixtureDir.'psr4'.DIRECTORY_SEPARATOR.'Psr4CaseMismatch.php';
+            return $fixtureDir.'psr4'.\DIRECTORY_SEPARATOR.'Psr4CaseMismatch.php';
         } elseif (__NAMESPACE__.'\Fixtures\NotPSR0' === $class) {
             return $fixtureDir.'reallyNotPsr0.php';
         } elseif (__NAMESPACE__.'\Fixtures\NotPSR0bis' === $class) {
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 436f45b85429..0c1966a42e25 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -647,7 +647,7 @@ private function doGet($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_
      * the parameters passed to the container constructor to have precedence
      * over the loaded ones.
      *
-     *     $container = new ContainerBuilder(new ParameterBag(array('foo' => 'bar')));
+     *     $container = new ContainerBuilder(new ParameterBag(['foo' => 'bar']));
      *     $loader = new LoaderXXX($container);
      *     $loader->load('resource_name');
      *     $container->register('foo', 'stdClass');
@@ -1288,7 +1288,7 @@ private function doResolveServices($value, array &$inlineServices = [], $isConst
      *
      * Example:
      *
-     *     $container->register('foo')->addTag('my.tag', array('hello' => 'world'));
+     *     $container->register('foo')->addTag('my.tag', ['hello' => 'world']);
      *
      *     $serviceIds = $container->findTaggedServiceIds('my.tag');
      *     foreach ($serviceIds as $serviceId => $tags) {
diff --git a/src/Symfony/Component/DependencyInjection/ServiceSubscriberInterface.php b/src/Symfony/Component/DependencyInjection/ServiceSubscriberInterface.php
index 7024484bd8ae..10c238754421 100644
--- a/src/Symfony/Component/DependencyInjection/ServiceSubscriberInterface.php
+++ b/src/Symfony/Component/DependencyInjection/ServiceSubscriberInterface.php
@@ -33,16 +33,16 @@ interface ServiceSubscriberInterface
      *
      * For mandatory dependencies:
      *
-     *  * array('logger' => 'Psr\Log\LoggerInterface') means the objects use the "logger" name
+     *  * ['logger' => 'Psr\Log\LoggerInterface'] means the objects use the "logger" name
      *    internally to fetch a service which must implement Psr\Log\LoggerInterface.
-     *  * array('Psr\Log\LoggerInterface') is a shortcut for
-     *  * array('Psr\Log\LoggerInterface' => 'Psr\Log\LoggerInterface')
+     *  * ['Psr\Log\LoggerInterface'] is a shortcut for
+     *  * ['Psr\Log\LoggerInterface' => 'Psr\Log\LoggerInterface']
      *
      * otherwise:
      *
-     *  * array('logger' => '?Psr\Log\LoggerInterface') denotes an optional dependency
-     *  * array('?Psr\Log\LoggerInterface') is a shortcut for
-     *  * array('Psr\Log\LoggerInterface' => '?Psr\Log\LoggerInterface')
+     *  * ['logger' => '?Psr\Log\LoggerInterface'] denotes an optional dependency
+     *  * ['?Psr\Log\LoggerInterface'] is a shortcut for
+     *  * ['Psr\Log\LoggerInterface' => '?Psr\Log\LoggerInterface']
      *
      * @return array The required service types, optionally keyed by service names
      */
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index 8e1014dcefbd..b2355dedf9a6 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -626,7 +626,7 @@ public function evaluate($xpath)
      *
      * Example:
      *
-     *     $crawler->filter('h1 a')->extract(array('_text', 'href'));
+     *     $crawler->filter('h1 a')->extract(['_text', 'href']);
      *
      * @param array $attributes An array of attributes
      *
diff --git a/src/Symfony/Component/DomCrawler/FormFieldRegistry.php b/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
index b4ec51290c85..10c7e8cb365b 100644
--- a/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
+++ b/src/Symfony/Component/DomCrawler/FormFieldRegistry.php
@@ -133,7 +133,7 @@ public function set($name, $value)
     /**
      * Returns the list of field with their value.
      *
-     * @return FormField[] The list of fields as array((string) Fully qualified name => (mixed) value)
+     * @return FormField[] The list of fields as [string] Fully qualified name => (mixed) value)
      */
     public function all()
     {
@@ -167,7 +167,7 @@ private static function create($base, array $values)
      * @param string $base   The name of the base field
      * @param array  $output The initial values
      *
-     * @return array The list of fields as array((string) Fully qualified name => (mixed) value)
+     * @return array The list of fields as [string] Fully qualified name => (mixed) value)
      */
     private function walk(array $array, $base = '', array &$output = [])
     {
@@ -186,7 +186,7 @@ private function walk(array $array, $base = '', array &$output = [])
     /**
      * Splits a field name into segments as a web browser would do.
      *
-     *     getSegments('base[foo][3][]') = array('base', 'foo, '3', '');
+     *     getSegments('base[foo][3][]') = ['base', 'foo, '3', ''];
      *
      * @param string $name The name of the field
      *
diff --git a/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php b/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
index 14f17277e6db..aeafd9ec29b4 100644
--- a/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
+++ b/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
@@ -67,7 +67,7 @@ public function addListenerService($eventName, $callback, $priority = 0)
         @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
 
         if (!\is_array($callback) || 2 !== \count($callback)) {
-            throw new \InvalidArgumentException('Expected an array("service", "method") argument');
+            throw new \InvalidArgumentException('Expected an ["service", "method"] argument');
         }
 
         $this->listenerIds[$eventName][] = [$callback[0], $callback[1], $priority];
diff --git a/src/Symfony/Component/EventDispatcher/EventSubscriberInterface.php b/src/Symfony/Component/EventDispatcher/EventSubscriberInterface.php
index 6e1976b86a55..824f21599c25 100644
--- a/src/Symfony/Component/EventDispatcher/EventSubscriberInterface.php
+++ b/src/Symfony/Component/EventDispatcher/EventSubscriberInterface.php
@@ -36,9 +36,9 @@ interface EventSubscriberInterface
      *
      * For instance:
      *
-     *  * array('eventName' => 'methodName')
-     *  * array('eventName' => array('methodName', $priority))
-     *  * array('eventName' => array(array('methodName1', $priority), array('methodName2')))
+     *  * ['eventName' => 'methodName']
+     *  * ['eventName' => ['methodName', $priority]]
+     *  * ['eventName' => [['methodName1', $priority], ['methodName2']]]
      *
      * @return array The event names to listen to
      */
diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 01872d92621f..aa9afb349d30 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -730,7 +730,7 @@ private function toIterable($files)
     }
 
     /**
-     * Gets a 2-tuple of scheme (may be null) and hierarchical part of a filename (e.g. file:///tmp -> array(file, tmp)).
+     * Gets a 2-tuple of scheme (may be null) and hierarchical part of a filename (e.g. file:///tmp -> [file, tmp]).
      *
      * @param string $filename The filename to be parsed
      *
diff --git a/src/Symfony/Component/Finder/Glob.php b/src/Symfony/Component/Finder/Glob.php
index 27d9ce3d1193..ea76d51ae0f9 100644
--- a/src/Symfony/Component/Finder/Glob.php
+++ b/src/Symfony/Component/Finder/Glob.php
@@ -18,7 +18,7 @@
  *
  *     // prints foo.bar and foo.baz
  *     $regex = glob_to_regex("foo.*");
- *     for (array('foo.bar', 'foo.baz', 'foo', 'bar') as $t)
+ *     for (['foo.bar', 'foo.baz', 'foo', 'bar'] as $t)
  *     {
  *         if (/$regex/) echo "matched: $car\n";
  *     }
diff --git a/src/Symfony/Component/Form/ChoiceList/ChoiceListInterface.php b/src/Symfony/Component/Form/ChoiceList/ChoiceListInterface.php
index b59e77bf795a..c1d643ee73fa 100644
--- a/src/Symfony/Component/Form/ChoiceList/ChoiceListInterface.php
+++ b/src/Symfony/Component/Form/ChoiceList/ChoiceListInterface.php
@@ -48,19 +48,19 @@ public function getValues();
      * keys of the choices. If the original array contained nested arrays, these
      * nested arrays are represented here as well:
      *
-     *     $form->add('field', 'choice', array(
-     *         'choices' => array(
-     *             'Decided' => array('Yes' => true, 'No' => false),
-     *             'Undecided' => array('Maybe' => null),
-     *         ),
-     *     ));
+     *     $form->add('field', 'choice', [
+     *         'choices' => [
+     *             'Decided' => ['Yes' => true, 'No' => false],
+     *             'Undecided' => ['Maybe' => null],
+     *         ],
+     *     ]);
      *
      * In this example, the result of this method is:
      *
-     *     array(
-     *         'Decided' => array('Yes' => '0', 'No' => '1'),
-     *         'Undecided' => array('Maybe' => '2'),
-     *     )
+     *     [
+     *         'Decided' => ['Yes' => '0', 'No' => '1'],
+     *         'Undecided' => ['Maybe' => '2'],
+     *     ]
      *
      * @return string[] The choice values
      */
@@ -73,12 +73,12 @@ public function getStructuredValues();
      * "choice" option of the choice type. Note that this array may contain
      * duplicates if the "choice" option contained choice groups:
      *
-     *     $form->add('field', 'choice', array(
-     *         'choices' => array(
-     *             'Decided' => array(true, false),
-     *             'Undecided' => array(null),
-     *         ),
-     *     ));
+     *     $form->add('field', 'choice', [
+     *         'choices' => [
+     *             'Decided' => [true, false],
+     *             'Undecided' => [null],
+     *         ],
+     *     ]);
      *
      * In this example, the original key 0 appears twice, once for `true` and
      * once for `null`.
diff --git a/src/Symfony/Component/Form/Forms.php b/src/Symfony/Component/Form/Forms.php
index 9b352aa5dd20..7c61d640e21c 100644
--- a/src/Symfony/Component/Form/Forms.php
+++ b/src/Symfony/Component/Form/Forms.php
@@ -26,9 +26,9 @@
  *         ->add('firstName', 'Symfony\Component\Form\Extension\Core\Type\TextType')
  *         ->add('lastName', 'Symfony\Component\Form\Extension\Core\Type\TextType')
  *         ->add('age', 'Symfony\Component\Form\Extension\Core\Type\IntegerType')
- *         ->add('color', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', array(
- *             'choices' => array('Red' => 'r', 'Blue' => 'b'),
- *         ))
+ *         ->add('color', 'Symfony\Component\Form\Extension\Core\Type\ChoiceType', [
+ *             'choices' => ['Red' => 'r', 'Blue' => 'b'],
+ *         ])
  *         ->getForm();
  *
  * You can also add custom extensions to the form factory:
@@ -68,9 +68,9 @@
  *     use Symfony\Component\Form\Extension\Templating\TemplatingExtension;
  *
  *     $formFactory = Forms::createFormFactoryBuilder()
- *         ->addExtension(new TemplatingExtension($engine, null, array(
+ *         ->addExtension(new TemplatingExtension($engine, null, [
  *             'FrameworkBundle:Form',
- *         )))
+ *         ]))
  *         ->getFormFactory();
  *
  * The next example shows how to include the "<table>" layout:
@@ -78,10 +78,10 @@
  *     use Symfony\Component\Form\Extension\Templating\TemplatingExtension;
  *
  *     $formFactory = Forms::createFormFactoryBuilder()
- *         ->addExtension(new TemplatingExtension($engine, null, array(
+ *         ->addExtension(new TemplatingExtension($engine, null, [
  *             'FrameworkBundle:Form',
  *             'FrameworkBundle:FormTable',
- *         )))
+ *         ]))
  *         ->getFormFactory();
  *
  * @author Bernhard Schussek <bschussek@gmail.com>
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php
index 7619fcc473f6..87587bda3af2 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php
@@ -41,8 +41,8 @@ public function dataProvider()
             // this will not work as PHP will use actual date to replace missing info
             // and after change of date will lookup for closest Wednesday
             // i.e. value: 2010-02, PHP value: 2010-02-(today i.e. 20), parsed date: 2010-02-24
-            //array('Y-m-D', '2010-02-Wed', '2010-02-03 00:00:00 UTC'),
-            //array('Y-m-l', '2010-02-Wednesday', '2010-02-03 00:00:00 UTC'),
+            //['Y-m-D', '2010-02-Wed', '2010-02-03 00:00:00 UTC'],
+            //['Y-m-l', '2010-02-Wednesday', '2010-02-03 00:00:00 UTC'],
 
             // different month representations
             ['Y-n-d', '2010-2-03', '2010-02-03 00:00:00 UTC'],
diff --git a/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php b/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
index 1c723d16a097..755b842e6127 100644
--- a/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
+++ b/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
@@ -47,7 +47,7 @@ public function spaceProvider()
             ['0020'],
             ['00A0'],
             ['1680'],
-//            array('180E'),
+//            ['180E'],
             ['2000'],
             ['2001'],
             ['2002'],
@@ -72,7 +72,7 @@ public function spaceProvider()
             ['000D'],
             ['0085'],
             // zero width space
-//            array('200B'),
+//            ['200B'],
         ];
     }
 
diff --git a/src/Symfony/Component/Form/Util/FormUtil.php b/src/Symfony/Component/Form/Util/FormUtil.php
index 53053f9d5b79..fed96de4fa9b 100644
--- a/src/Symfony/Component/Form/Util/FormUtil.php
+++ b/src/Symfony/Component/Form/Util/FormUtil.php
@@ -36,7 +36,7 @@ private function __construct()
      */
     public static function isEmpty($data)
     {
-        // Should not do a check for array() === $data!!!
+        // Should not do a check for [] === $data!!!
         // This method is used in occurrences where arrays are
         // not considered to be empty, ever.
         return null === $data || '' === $data;
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
index c027a9e6e5ee..bc088e7740bc 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
@@ -161,7 +161,7 @@ class PdoSessionHandler extends AbstractSessionHandler
      *  * db_time_col: The column where to store the timestamp [default: sess_time]
      *  * db_username: The username when lazy-connect [default: '']
      *  * db_password: The password when lazy-connect [default: '']
-     *  * db_connection_options: An array of driver-specific connection options [default: array()]
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
      *  * lock_mode: The strategy for locking, see constants [default: LOCK_TRANSACTIONAL]
      *
      * @param \PDO|string|null $pdoOrDsn A \PDO instance or DSN string or URL string or null
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
index a2f64a3afb7a..c4dbe7586822 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
@@ -331,7 +331,7 @@ public function isStarted()
      * For convenience we omit 'session.' from the beginning of the keys.
      * Explicitly ignores other ini keys.
      *
-     * @param array $options Session ini directives array(key => value)
+     * @param array $options Session ini directives [key => value]
      *
      * @see http://php.net/session.configuration
      */
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
index f6fb1309ea1d..68634f6d4b10 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
@@ -576,7 +576,7 @@ public function testPrepareSetsPragmaOnHttp10Only()
     public function testSetCache()
     {
         $response = new Response();
-        //array('etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public')
+        // ['etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public']
         try {
             $response->setCache(['wrong option' => 'value']);
             $this->fail('->setCache() throws an InvalidArgumentException if an option is not supported');
diff --git a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
index 50413ce4ed6d..758e9043da2a 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
@@ -216,7 +216,7 @@ private function getControllerError($callable)
         }
 
         if (2 !== \count($callable)) {
-            return 'Invalid format for controller, expected array(controller, method) or controller::method.';
+            return 'Invalid format for controller, expected [controller, method] or controller::method.';
         }
 
         list($controller, $method) = $callable;
diff --git a/src/Symfony/Component/Inflector/Tests/InflectorTest.php b/src/Symfony/Component/Inflector/Tests/InflectorTest.php
index 87a959fa0afe..9f1e1c6bafa3 100644
--- a/src/Symfony/Component/Inflector/Tests/InflectorTest.php
+++ b/src/Symfony/Component/Inflector/Tests/InflectorTest.php
@@ -149,9 +149,9 @@ public function singularizeProvider()
             ['SubTrees', ['SubTre', 'SubTree']],
 
             // Known issues
-            //array('insignia', 'insigne'),
-            //array('insignias', 'insigne'),
-            //array('rattles', 'rattle'),
+            //['insignia', 'insigne'],
+            //['insignias', 'insigne'],
+            //['rattles', 'rattle'],
         ];
     }
 
diff --git a/src/Symfony/Component/Intl/Data/Bundle/Reader/BundleEntryReaderInterface.php b/src/Symfony/Component/Intl/Data/Bundle/Reader/BundleEntryReaderInterface.php
index 13cf85bb4881..8dac0aad2493 100644
--- a/src/Symfony/Component/Intl/Data/Bundle/Reader/BundleEntryReaderInterface.php
+++ b/src/Symfony/Component/Intl/Data/Bundle/Reader/BundleEntryReaderInterface.php
@@ -35,7 +35,7 @@ interface BundleEntryReaderInterface extends BundleReaderInterface
      *
      * Then the value can be read by calling:
      *
-     *     $reader->readEntry('...', 'en', array('TopLevel', 'NestedLevel', 'Entry'));
+     *     $reader->readEntry('...', 'en', ['TopLevel', 'NestedLevel', 'Entry']);
      *
      * @param string   $path     The path to the resource bundle
      * @param string   $locale   The locale to read
diff --git a/src/Symfony/Component/Intl/Tests/NumberFormatter/AbstractNumberFormatterTest.php b/src/Symfony/Component/Intl/Tests/NumberFormatter/AbstractNumberFormatterTest.php
index ff1c2653e090..a81d30c86503 100644
--- a/src/Symfony/Component/Intl/Tests/NumberFormatter/AbstractNumberFormatterTest.php
+++ b/src/Symfony/Component/Intl/Tests/NumberFormatter/AbstractNumberFormatterTest.php
@@ -439,7 +439,7 @@ public function formatRoundingModeRoundHalfUpProvider()
         return [
             [1.121, '1.12'],
             [1.123, '1.12'],
-            // array(1.125, '1.13'),
+            // [1.125, '1.13'],
             [1.127, '1.13'],
             [1.129, '1.13'],
             [1020 / 100, '10.20'],
diff --git a/src/Symfony/Component/Process/PhpProcess.php b/src/Symfony/Component/Process/PhpProcess.php
index e1d749633e5a..f0c47b285a16 100644
--- a/src/Symfony/Component/Process/PhpProcess.php
+++ b/src/Symfony/Component/Process/PhpProcess.php
@@ -64,7 +64,7 @@ public function setPhpBinary($php)
     /**
      * {@inheritdoc}
      */
-    public function start(callable $callback = null/*, array $env = array()*/)
+    public function start(callable $callback = null/*, array $env = []*/)
     {
         if (null === $this->getCommandLine()) {
             throw new RuntimeException('Unable to find the PHP executable.');
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index cfd5adb7365c..75395b66c587 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -204,7 +204,7 @@ public function __clone()
      *
      * @final since version 3.3
      */
-    public function run($callback = null/*, array $env = array()*/)
+    public function run($callback = null/*, array $env = []*/)
     {
         $env = 1 < \func_num_args() ? func_get_arg(1) : null;
         $this->start($callback, $env);
@@ -228,7 +228,7 @@ public function run($callback = null/*, array $env = array()*/)
      *
      * @final since version 3.3
      */
-    public function mustRun(callable $callback = null/*, array $env = array()*/)
+    public function mustRun(callable $callback = null/*, array $env = []*/)
     {
         if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
             throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.');
@@ -262,7 +262,7 @@ public function mustRun(callable $callback = null/*, array $env = array()*/)
      * @throws RuntimeException When process is already running
      * @throws LogicException   In case a callback is provided and output has been disabled
      */
-    public function start(callable $callback = null/*, array $env = array()*/)
+    public function start(callable $callback = null/*, array $env = [*/)
     {
         if ($this->isRunning()) {
             throw new RuntimeException('Process is already running');
@@ -378,7 +378,7 @@ public function start(callable $callback = null/*, array $env = array()*/)
      *
      * @final since version 3.3
      */
-    public function restart(callable $callback = null/*, array $env = array()*/)
+    public function restart(callable $callback = null/*, array $env = []*/)
     {
         if ($this->isRunning()) {
             throw new RuntimeException('Process is already running');
diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
index 99f27d4cd6de..a9ecbe8043f6 100644
--- a/src/Symfony/Component/Process/Tests/ProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -1164,8 +1164,8 @@ public function responsesCodeProvider()
     {
         return [
             //expected output / getter / code to execute
-            //array(1,'getExitCode','exit(1);'),
-            //array(true,'isSuccessful','exit();'),
+            //[1,'getExitCode','exit(1);'],
+            //[true,'isSuccessful','exit();'],
             ['output', 'getOutput', 'echo \'output\';'],
         ];
     }
diff --git a/src/Symfony/Component/Routing/CHANGELOG.md b/src/Symfony/Component/Routing/CHANGELOG.md
index e278f8b1e593..3d34c1d1677c 100644
--- a/src/Symfony/Component/Routing/CHANGELOG.md
+++ b/src/Symfony/Component/Routing/CHANGELOG.md
@@ -41,7 +41,7 @@ CHANGELOG
    Before:
 
    ```php
-   $router->generate('blog_show', array('slug' => 'my-blog-post'), true);
+   $router->generate('blog_show', ['slug' => 'my-blog-post'], true);
    ```
 
    After:
@@ -49,7 +49,7 @@ CHANGELOG
    ```php
    use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
 
-   $router->generate('blog_show', array('slug' => 'my-blog-post'), UrlGeneratorInterface::ABSOLUTE_URL);
+   $router->generate('blog_show', ['slug' => 'my-blog-post'], UrlGeneratorInterface::ABSOLUTE_URL);
    ```
 
 2.5.0
@@ -114,7 +114,7 @@ CHANGELOG
    ```php
    $route = new Route();
    $route->setPath('/article/{id}');
-   $route->setMethods(array('POST', 'PUT'));
+   $route->setMethods(['POST', 'PUT']);
    $route->setSchemes('https');
    ```
 
@@ -169,10 +169,10 @@ CHANGELOG
    used with a single parameter. The other params `$prefix`, `$default`, `$requirements` and `$options`
    will still work, but have been deprecated. The `addPrefix` method should be used for this
    use-case instead.
-   Before: `$parentCollection->addCollection($collection, '/prefix', array(...), array(...))`
+   Before: `$parentCollection->addCollection($collection, '/prefix', [...], [...])`
    After:
    ```php
-   $collection->addPrefix('/prefix', array(...), array(...));
+   $collection->addPrefix('/prefix', [...], [...]);
    $parentCollection->addCollection($collection);
    ```
  * added support for the method default argument values when defining a @Route
@@ -197,7 +197,7 @@ CHANGELOG
    (only relevant if you implemented your own RouteCompiler).
  * Added possibility to generate relative paths and network paths in the UrlGenerator, e.g.
    "../parent-file" and "//example.com/dir/file". The third parameter in
-   `UrlGeneratorInterface::generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH)`
+   `UrlGeneratorInterface::generate($name, $parameters = [], $referenceType = self::ABSOLUTE_PATH)`
    now accepts more values and you should use the constants defined in `UrlGeneratorInterface` for
    claritiy. The old method calls with a Boolean parameter will continue to work because they
    equal the signature using the constants.
diff --git a/src/Symfony/Component/Routing/Generator/Dumper/PhpGeneratorDumper.php b/src/Symfony/Component/Routing/Generator/Dumper/PhpGeneratorDumper.php
index 9fc45c58f695..2e99c81d9cc0 100644
--- a/src/Symfony/Component/Routing/Generator/Dumper/PhpGeneratorDumper.php
+++ b/src/Symfony/Component/Routing/Generator/Dumper/PhpGeneratorDumper.php
@@ -76,7 +76,7 @@ public function __construct(RequestContext \$context, LoggerInterface \$logger =
      */
     private function generateDeclaredRoutes()
     {
-        $routes = "array(\n";
+        $routes = "[\n";
         foreach ($this->getRoutes()->all() as $name => $route) {
             $compiledRoute = $route->compile();
 
@@ -90,7 +90,7 @@ private function generateDeclaredRoutes()
 
             $routes .= sprintf("        '%s' => %s,\n", $name, str_replace("\n", '', var_export($properties, true)));
         }
-        $routes .= '    )';
+        $routes .= '    ]';
 
         return $routes;
     }
@@ -103,7 +103,7 @@ private function generateDeclaredRoutes()
     private function generateGenerateMethod()
     {
         return <<<'EOF'
-    public function generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH)
+    public function generate($name, $parameters = [], $referenceType = self::ABSOLUTE_PATH)
     {
         if (!isset(self::$declaredRoutes[$name])) {
             throw new RouteNotFoundException(sprintf('Unable to generate a URL for the named route "%s" as such route does not exist.', $name));
diff --git a/src/Symfony/Component/Routing/RouteCompiler.php b/src/Symfony/Component/Routing/RouteCompiler.php
index 0eb2b6b32396..391fa8290353 100644
--- a/src/Symfony/Component/Routing/RouteCompiler.php
+++ b/src/Symfony/Component/Routing/RouteCompiler.php
@@ -154,7 +154,7 @@ private static function compilePattern(Route $route, $pattern, $isHost)
                 // Find the next static character after the variable that functions as a separator. By default, this separator and '/'
                 // are disallowed for the variable. This default requirement makes sure that optional variables can be matched at all
                 // and that the generating-matching-combination of URLs unambiguous, i.e. the params used for generating the URL are
-                // the same that will be matched. Example: new Route('/{page}.{_format}', array('_format' => 'html'))
+                // the same that will be matched. Example: new Route('/{page}.{_format}', ['_format' => 'html'])
                 // If {page} would also match the separating dot, {_format} would never match as {page} will eagerly consume everything.
                 // Also even if {_format} was not optional the requirement prevents that {page} matches something that was originally
                 // part of {_format} when generating the URL, e.g. _format = 'mobile.html'.
diff --git a/src/Symfony/Component/Routing/Tests/RouteTest.php b/src/Symfony/Component/Routing/Tests/RouteTest.php
index 1c9f3e18671b..179f4880d0d8 100644
--- a/src/Symfony/Component/Routing/Tests/RouteTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteTest.php
@@ -153,7 +153,7 @@ public function testHost()
     public function testScheme()
     {
         $route = new Route('/');
-        $this->assertEquals([], $route->getSchemes(), 'schemes is initialized with array()');
+        $this->assertEquals([], $route->getSchemes(), 'schemes is initialized with []');
         $this->assertFalse($route->hasScheme('http'));
         $route->setSchemes('hTTp');
         $this->assertEquals(['http'], $route->getSchemes(), '->setSchemes() accepts a single scheme string and lowercases it');
@@ -168,7 +168,7 @@ public function testScheme()
     public function testMethod()
     {
         $route = new Route('/');
-        $this->assertEquals([], $route->getMethods(), 'methods is initialized with array()');
+        $this->assertEquals([], $route->getMethods(), 'methods is initialized with []');
         $route->setMethods('gEt');
         $this->assertEquals(['GET'], $route->getMethods(), '->setMethods() accepts a single method string and uppercases it');
         $route->setMethods(['gEt', 'PosT']);
diff --git a/src/Symfony/Component/Security/Core/User/UserInterface.php b/src/Symfony/Component/Security/Core/User/UserInterface.php
index 613db8ecc0fa..264e0c1aeb53 100644
--- a/src/Symfony/Component/Security/Core/User/UserInterface.php
+++ b/src/Symfony/Component/Security/Core/User/UserInterface.php
@@ -38,7 +38,7 @@ interface UserInterface
      *
      *     public function getRoles()
      *     {
-     *         return array('ROLE_USER');
+     *         return ['ROLE_USER'];
      *     }
      *
      * Alternatively, the roles might be stored on a ``roles`` property,
diff --git a/src/Symfony/Component/Security/Guard/AuthenticatorInterface.php b/src/Symfony/Component/Security/Guard/AuthenticatorInterface.php
index f68b8d6f43b0..90df7610ad2b 100644
--- a/src/Symfony/Component/Security/Guard/AuthenticatorInterface.php
+++ b/src/Symfony/Component/Security/Guard/AuthenticatorInterface.php
@@ -44,14 +44,14 @@ public function supports(Request $request);
      *
      * For example, for a form login, you might:
      *
-     *      return array(
+     *      return [
      *          'username' => $request->request->get('_username'),
      *          'password' => $request->request->get('_password'),
-     *      );
+     *      ];
      *
      * Or for an API token that's on a header, you might use:
      *
-     *      return array('api_key' => $request->headers->get('X-API-TOKEN'));
+     *      return ['api_key' => $request->headers->get('X-API-TOKEN')];
      *
      * @param Request $request
      *
diff --git a/src/Symfony/Component/Security/Guard/GuardAuthenticatorInterface.php b/src/Symfony/Component/Security/Guard/GuardAuthenticatorInterface.php
index 5f6b6bd3c8b9..3a9828dfd607 100644
--- a/src/Symfony/Component/Security/Guard/GuardAuthenticatorInterface.php
+++ b/src/Symfony/Component/Security/Guard/GuardAuthenticatorInterface.php
@@ -43,17 +43,17 @@ interface GuardAuthenticatorInterface extends AuthenticationEntryPointInterface
      * For example, for a form login, you might:
      *
      *     if ($request->request->has('_username')) {
-     *         return array(
+     *         return [
      *             'username' => $request->request->get('_username'),
      *             'password' => $request->request->get('_password'),
-     *         );
+     *         ];
      *     } else {
      *         return;
      *     }
      *
      * Or for an API token that's on a header, you might use:
      *
-     *     return array('api_key' => $request->headers->get('X-API-TOKEN'));
+     *     return ['api_key' => $request->headers->get('X-API-TOKEN')];
      *
      * @param Request $request
      *
diff --git a/src/Symfony/Component/Security/Http/FirewallMapInterface.php b/src/Symfony/Component/Security/Http/FirewallMapInterface.php
index ebdd498123a1..5517e1d1a37a 100644
--- a/src/Symfony/Component/Security/Http/FirewallMapInterface.php
+++ b/src/Symfony/Component/Security/Http/FirewallMapInterface.php
@@ -30,7 +30,7 @@ interface FirewallMapInterface
      * If there is no exception listener, the second element of the outer array
      * must be null.
      *
-     * @return array of the format array(array(AuthenticationListener), ExceptionListener)
+     * @return array of the format [[AuthenticationListener], ExceptionListener]
      */
     public function getListeners(Request $request);
 }
diff --git a/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php b/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
index 24daf7c5c4f9..1c76fe4bba0a 100644
--- a/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
@@ -43,7 +43,7 @@ final public function decode($data, $format, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function supportsDecoding($format/*, array $context = array()*/)
+    public function supportsDecoding($format/*, array $context = []*/)
     {
         $context = \func_num_args() > 1 ? func_get_arg(1) : [];
 
diff --git a/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php b/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
index f1e749139414..a0a718356c85 100644
--- a/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
@@ -43,7 +43,7 @@ final public function encode($data, $format, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function supportsEncoding($format/*, array $context = array()*/)
+    public function supportsEncoding($format/*, array $context = []*/)
     {
         $context = \func_num_args() > 1 ? func_get_arg(1) : [];
 
@@ -64,7 +64,7 @@ public function supportsEncoding($format/*, array $context = array()*/)
      *
      * @return bool
      */
-    public function needsNormalization($format/*, array $context = array()*/)
+    public function needsNormalization($format/*, array $context = []*/)
     {
         $context = \func_num_args() > 1 ? func_get_arg(1) : [];
         $encoder = $this->getEncoder($format, $context);
diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index 522637a00789..f0a4afb191b3 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -396,7 +396,7 @@ private function buildXml(\DOMNode $parentNode, $data, $xmlRootNodeName = null)
                         /*
                          * Create nodes to append to $parentNode based on the $key of this array
                          * Produces <xml><item>0</item><item>1</item></xml>
-                         * From array("item" => array(0,1));.
+                         * From ["item" => [0,1]];.
                          */
                         foreach ($data as $subData) {
                             $append = $this->appendNode($parentNode, $subData, $key);
diff --git a/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
index cf65094c661e..af80d00ba0f8 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
@@ -66,7 +66,7 @@ public function denormalize($data, $class, $format = null, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function supportsDenormalization($data, $type, $format = null/*, array $context = array()*/)
+    public function supportsDenormalization($data, $type, $format = null/*, array $context = []*/)
     {
         $context = \func_num_args() > 3 ? func_get_arg(3) : [];
 
diff --git a/src/Symfony/Component/Serializer/Serializer.php b/src/Symfony/Component/Serializer/Serializer.php
index 27014fb72d83..4528e385a7ff 100644
--- a/src/Symfony/Component/Serializer/Serializer.php
+++ b/src/Symfony/Component/Serializer/Serializer.php
@@ -188,7 +188,7 @@ public function denormalize($data, $type, $format = null, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function supportsNormalization($data, $format = null/*, array $context = array()*/)
+    public function supportsNormalization($data, $format = null/*, array $context = []*/)
     {
         if (\func_num_args() > 2) {
             $context = \func_get_arg(2);
@@ -196,7 +196,7 @@ public function supportsNormalization($data, $format = null/*, array $context =
             if (__CLASS__ !== \get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('The "%s()" method will have a third `$context = array()` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('The "%s()" method will have a third `$context = []` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
@@ -209,7 +209,7 @@ public function supportsNormalization($data, $format = null/*, array $context =
     /**
      * {@inheritdoc}
      */
-    public function supportsDenormalization($data, $type, $format = null/*, array $context = array()*/)
+    public function supportsDenormalization($data, $type, $format = null/*, array $context = []*/)
     {
         if (\func_num_args() > 3) {
             $context = \func_get_arg(3);
@@ -217,7 +217,7 @@ public function supportsDenormalization($data, $type, $format = null/*, array $c
             if (__CLASS__ !== \get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('The "%s()" method will have a fourth `$context = array()` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('The "%s()" method will have a fourth `$context = []` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
@@ -283,7 +283,7 @@ final public function decode($data, $format, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function supportsEncoding($format/*, array $context = array()*/)
+    public function supportsEncoding($format/*, array $context = []*/)
     {
         if (\func_num_args() > 1) {
             $context = \func_get_arg(1);
@@ -291,7 +291,7 @@ public function supportsEncoding($format/*, array $context = array()*/)
             if (__CLASS__ !== \get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('The "%s()" method will have a second `$context = array()` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('The "%s()" method will have a second `$context = []` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
@@ -304,7 +304,7 @@ public function supportsEncoding($format/*, array $context = array()*/)
     /**
      * {@inheritdoc}
      */
-    public function supportsDecoding($format/*, array $context = array()*/)
+    public function supportsDecoding($format/*, array $context = []*/)
     {
         if (\func_num_args() > 1) {
             $context = \func_get_arg(1);
@@ -312,7 +312,7 @@ public function supportsDecoding($format/*, array $context = array()*/)
             if (__CLASS__ !== \get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('The "%s()" method will have a second `$context = array()` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('The "%s()" method will have a second `$context = []` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
diff --git a/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php b/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
index b8fdc926839e..919bab8fff97 100644
--- a/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
+++ b/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
@@ -40,19 +40,19 @@ abstract class AbstractOperation implements OperationInterface
      *
      * The data structure of this array is as follows:
      *
-     *     array(
-     *         'domain 1' => array(
-     *             'all' => array(...),
-     *             'new' => array(...),
-     *             'obsolete' => array(...)
-     *         ),
-     *         'domain 2' => array(
-     *             'all' => array(...),
-     *             'new' => array(...),
-     *             'obsolete' => array(...)
-     *         ),
+     *     [
+     *         'domain 1' => [
+     *             'all' => [...],
+     *             'new' => [...],
+     *             'obsolete' => [...]
+     *         ],
+     *         'domain 2' => [
+     *             'all' => [...],
+     *             'new' => [...],
+     *             'obsolete' => [...]
+     *         ],
      *         ...
-     *     )
+     *     ]
      *
      * @var array The array that stores 'all', 'new' and 'obsolete' messages
      */
diff --git a/src/Symfony/Component/Translation/Loader/ArrayLoader.php b/src/Symfony/Component/Translation/Loader/ArrayLoader.php
index 7bbfca68a4b0..0a6f9f089d5b 100644
--- a/src/Symfony/Component/Translation/Loader/ArrayLoader.php
+++ b/src/Symfony/Component/Translation/Loader/ArrayLoader.php
@@ -36,7 +36,7 @@ public function load($resource, $locale, $domain = 'messages')
      * Flattens an nested array of translations.
      *
      * The scheme used is:
-     *   'key' => array('key2' => array('key3' => 'value'))
+     *   'key' => ['key2' => ['key3' => 'value']]
      * Becomes:
      *   'key.key2.key3' => 'value'
      *
diff --git a/src/Symfony/Component/Translation/Util/ArrayConverter.php b/src/Symfony/Component/Translation/Util/ArrayConverter.php
index a45ae2dbba79..0276294f62d6 100644
--- a/src/Symfony/Component/Translation/Util/ArrayConverter.php
+++ b/src/Symfony/Component/Translation/Util/ArrayConverter.php
@@ -27,7 +27,7 @@ class ArrayConverter
 {
     /**
      * Converts linear messages array to tree-like array.
-     * For example this rray('foo.bar' => 'value') will be converted to array('foo' => array('bar' => 'value')).
+     * For example this rray('foo.bar' => 'value') will be converted to ['foo' => ['bar' => 'value']].
      *
      * @param array $messages Linear messages array
      *
diff --git a/src/Symfony/Component/Validator/Constraints/GroupSequence.php b/src/Symfony/Component/Validator/Constraints/GroupSequence.php
index 1f6f512811ec..a39d712bf4be 100644
--- a/src/Symfony/Component/Validator/Constraints/GroupSequence.php
+++ b/src/Symfony/Component/Validator/Constraints/GroupSequence.php
@@ -17,7 +17,7 @@
  * When validating a group sequence, each group will only be validated if all
  * of the previous groups in the sequence succeeded. For example:
  *
- *     $validator->validate($address, null, new GroupSequence(array('Basic', 'Strict')));
+ *     $validator->validate($address, null, new GroupSequence(['Basic', 'Strict']));
  *
  * In the first step, all constraints that belong to the group "Basic" will be
  * validated. If none of the constraints fail, the validator will then validate
diff --git a/src/Symfony/Component/Validator/Context/ExecutionContext
10000
Interface.php b/src/Symfony/Component/Validator/Context/ExecutionContextInterface.php
index cac98495bcf5..2ab625b1561a 100644
--- a/src/Symfony/Component/Validator/Context/ExecutionContextInterface.php
+++ b/src/Symfony/Component/Validator/Context/ExecutionContextInterface.php
@@ -97,7 +97,7 @@ public function buildViolation($message, array $parameters = []);
      *     {
      *         $validator = $this->context->getValidator();
      *
-     *         $violations = $validator->validate($value, new Length(array('min' => 3)));
+     *         $violations = $validator->validate($value, new Length(['min' => 3]));
      *
      *         if (count($violations) > 0) {
      *             // ...
diff --git a/src/Symfony/Component/VarDumper/Tests/Dumper/CliDumperTest.php b/src/Symfony/Component/VarDumper/Tests/Dumper/CliDumperTest.php
index 16c1968f25a7..9520b4fe102e 100644
--- a/src/Symfony/Component/VarDumper/Tests/Dumper/CliDumperTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Dumper/CliDumperTest.php
@@ -372,7 +372,7 @@ public function testThrowingCaster()
         $cloner->addCasters([
             ':stream' => eval('return function () use ($twig) {
                 try {
-                    $twig->render(array());
+                    $twig->render([]);
                 } catch (\Twig\Error\RuntimeError $e) {
                     throw $e->getPrevious();
                 }

From 37ab4cd0564d8e72701711a10742c5f2919e19a4 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 14:43:35 +0100
Subject: [PATCH 041/103] fixed CS

---
 .../Tests/DependencyInjection/DoctrineExtensionTest.php     | 6 +++---
 .../Finder/Tests/Iterator/PathFilterIteratorTest.php        | 6 +++---
 .../Component/HttpFoundation/Tests/AcceptHeaderTest.php     | 6 +++---
 src/Symfony/Component/HttpFoundation/Tests/RequestTest.php  | 2 +-
 4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
index fa848e8d2c27..0f53d0952c14 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
@@ -178,10 +178,10 @@ public function providerBasicDrivers()
             ['doctrine.orm.cache.apcu.class',      ['type' => 'apcu']],
             ['doctrine.orm.cache.array.class',     ['type' => 'array']],
             ['doctrine.orm.cache.xcache.class',    ['type' => 'xcache']],
-            ['doctrine.orm.cache.wincache.class', array ('type' => 'wincache')],
-            ['doctrine.orm.cache.zenddata.class', array ('type' => 'zenddata')],
+            ['doctrine.orm.cache.wincache.class', ['type' => 'wincache']],
+            ['doctrine.orm.cache.zenddata.class', ['type' => 'zenddata']],
             ['doctrine.orm.cache.redis.class',     ['type' => 'redis'],     ['setRedis']],
-            ['doctrine.orm.cache.memcache.class', array ('type' => 'memcache'), array ('setMemcache')],
+            ['doctrine.orm.cache.memcache.class', ['type' => 'memcache'], ['setMemcache']],
             ['doctrine.orm.cache.memcached.class', ['type' => 'memcached'], ['setMemcached']],
         ];
     }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
index 1c3c95dc5cca..9040ee04c3c7 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/PathFilterIteratorTest.php
@@ -68,15 +68,15 @@ public function getTestFilterData()
             [$inner, ['/^A/'],       [], ['abc.dat', 'ab.dat', 'a.dat']],
             [$inner, ['/^A\/B/'],    [], ['abc.dat', 'ab.dat']],
             [$inner, ['/^A\/B\/C/'], [], ['abc.dat']],
-            [$inner, ['/A\/B\/C/'], array (), ['abc.dat', 'abc.dat.copy']],
+            [$inner, ['/A\/B\/C/'], [], ['abc.dat', 'abc.dat.copy']],
 
             [$inner, ['A'],      [], ['abc.dat', 'ab.dat', 'a.dat', 'abc.dat.copy', 'ab.dat.copy', 'a.dat.copy']],
             [$inner, ['A/B'],    [], ['abc.dat', 'ab.dat', 'abc.dat.copy', 'ab.dat.copy']],
-            [$inner, ['A/B/C'], array (), ['abc.dat', 'abc.dat.copy']],
+            [$inner, ['A/B/C'], [], ['abc.dat', 'abc.dat.copy']],
 
             [$inner, ['copy/A'],      [], ['abc.dat.copy', 'ab.dat.copy', 'a.dat.copy']],
             [$inner, ['copy/A/B'],    [], ['abc.dat.copy', 'ab.dat.copy']],
-            [$inner, ['copy/A/B/C'], array (), ['abc.dat.copy']],
+            [$inner, ['copy/A/B/C'], [], ['abc.dat.copy']],
         ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
index d5518cc3cdb4..31998696d728 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
@@ -95,9 +95,9 @@ public function testSorting($string, array $values)
     public function provideSortingData()
     {
         return [
-            'quality has priority' => ['*;q=0.3,ISO-8859-1,utf-8;q=0.7', array ('ISO-8859-1', 'utf-8', '*')],
-            'order matters when q is equal' => ['*;q=0.3,ISO-8859-1;q=0.7,utf-8;q=0.7', array ('ISO-8859-1', 'utf-8', '*')],
-            'order matters when q is equal2' => ['*;q=0.3,utf-8;q=0.7,ISO-8859-1;q=0.7', array ('utf-8', 'ISO-8859-1', '*')],
+            'quality has priority' => ['*;q=0.3,ISO-8859-1,utf-8;q=0.7', ['ISO-8859-1', 'utf-8', '*']],
+            'order matters when q is equal' => ['*;q=0.3,ISO-8859-1;q=0.7,utf-8;q=0.7', ['ISO-8859-1', 'utf-8', '*']],
+            'order matters when q is equal2' => ['*;q=0.3,utf-8;q=0.7,ISO-8859-1;q=0.7', ['utf-8', 'ISO-8859-1', '*']],
         ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index 9e60e4705493..6a8a73db8541 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -1025,7 +1025,7 @@ public function getClientIpsProvider()
             // forwarded for with remote IPv6 addr not trusted
             [['1620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  null],
             // forwarded for with remote IPv6 addr trusted
-            [['2620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3', array ('1620:0:1cfe:face:b00c::3')],
+            [['2620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3', ['1620:0:1cfe:face:b00c::3']],
             // forwarded for with remote IPv6 range trusted
             [['88.88.88.88'],              '2a01:198:603:0:396e:4789:8e99:890f', '88.88.88.88',     ['2a01:198:603:0::/65']],
 

From d58b5c3b76b8e6a630a841d284ed43dbbc56ade7 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 19:24:45 +0100
Subject: [PATCH 042/103] fixed CS

---
 .../DataCollector/DoctrineDataCollector.php   |   28 +-
 .../AbstractDoctrineExtension.php             |   48 +-
 .../CompilerPass/RegisterMappingsPass.php     |    6 +-
 .../Doctrine/Form/DoctrineOrmTypeGuesser.php  |   40 +-
 .../MergeDoctrineCollectionListener.php       |   10 +-
 .../DoctrineDataCollectorTest.php             |   96 +-
 .../DoctrineExtensionTest.php                 |  182 +-
 .../ChoiceList/DoctrineChoiceLoaderTest.php   |   78 +-
 .../MergeDoctrineCollectionListenerTest.php   |    6 +-
 .../Monolog/Formatter/ConsoleFormatter.php    |   26 +-
 .../Bridge/Monolog/Handler/ConsoleHandler.php |   18 +-
 .../Monolog/Handler/ServerLogHandler.php      |    4 +-
 src/Symfony/Bridge/Monolog/Logger.php         |    4 +-
 .../Monolog/Processor/DebugProcessor.php      |   16 +-
 .../Bridge/Monolog/Processor/WebProcessor.php |    6 +-
 .../HttpCodeActivationStrategyTest.php        |   42 +-
 .../Bridge/Monolog/Tests/LoggerTest.php       |   16 +-
 .../Tests/Processor/DebugProcessorTest.php    |    8 +-
 .../Tests/Processor/WebProcessorTest.php      |   24 +-
 .../Bridge/Twig/Command/DebugCommand.php      |   24 +-
 .../Twig/DataCollector/TwigDataCollector.php  |   18 +-
 .../Bridge/Twig/Extension/CsrfExtension.php   |    6 +-
 .../Bridge/Twig/Extension/FormExtension.php   |   40 +-
 .../Twig/Extension/WorkflowExtension.php      |   14 +-
 .../Bridge/Twig/Form/TwigRendererEngine.php   |    4 +-
 .../Bridge/Twig/Node/FormThemeNode.php        |    2 +-
 .../Twig/Tests/Command/LintCommandTest.php    |   10 +-
 .../AbstractBootstrap3LayoutTest.php          |    4 +-
 ...AbstractBootstrap4HorizontalLayoutTest.php |    2 +-
 .../AbstractBootstrap4LayoutTest.php          |  232 +-
 .../Tests/Extension/WorkflowExtensionTest.php |   28 +-
 .../Command/ServerDumpPlaceholderCommand.php  |    2 +-
 .../Command/CacheClearCommand.php             |    8 +-
 .../Command/CachePoolDeleteCommand.php        |    4 +-
 .../Command/ContainerDebugCommand.php         |   28 +-
 .../Command/DebugAutowiringCommand.php        |   18 +-
 .../Command/RouterDebugCommand.php            |   14 +-
 .../Command/WorkflowDumpCommand.php           |   12 +-
 .../FrameworkBundle/Console/Application.php   |    8 +-
 .../Console/Descriptor/JsonDescriptor.php     |   66 +-
 .../Console/Descriptor/TextDescriptor.php     |  152 +-
 .../Console/Descriptor/XmlDescriptor.php      |   26 +-
 .../Controller/AbstractController.php         |    6 +-
 .../Controller/ControllerTrait.php            |   22 +-
 .../Compiler/CacheCollectorPass.php           |    6 +-
 .../TestServiceContainerRealRefPass.php       |    2 +-
 .../TestServiceContainerWeakRefPass.php       |    2 +-
 .../DependencyInjection/Configuration.php     |  118 +-
 .../FrameworkExtension.php                    |  194 +-
 .../Kernel/MicroKernelTrait.php               |    8 +-
 .../Resources/views/Form/form_help.html.php   |    2 +-
 .../Resources/views/Form/form_row.html.php    |    2 +-
 .../views/FormTable/form_row.html.php         |    2 +-
 .../Bundle/FrameworkBundle/Routing/Router.php |   16 +-
 .../CacheWarmer/RouterCacheWarmerTest.php     |    8 +-
 .../Command/CachePoolDeleteCommandTest.php    |   10 +-
 .../Tests/Command/RouterMatchCommandTest.php  |    6 +-
 .../Command/TranslationDebugCommandTest.php   |   52 +-
 .../Command/TranslationUpdateCommandTest.php  |   52 +-
 .../Tests/Command/XliffLintCommandTest.php    |    6 +-
 .../Tests/Console/ApplicationTest.php         |   10 +-
 .../Descriptor/AbstractDescriptorTest.php     |   54 +-
 .../Console/Descriptor/ObjectsProvider.php    |   88 +-
 .../Controller/AbstractControllerTest.php     |    6 +-
 .../Controller/ControllerNameParserTest.php   |   24 +-
 .../Controller/RedirectControllerTest.php     |  100 +-
 .../TestServiceContainerRefPassesTest.php     |    6 +-
 .../DependencyInjection/ConfigurationTest.php |  246 +-
 .../DependencyInjection/Fixtures/php/full.php |   80 +-
 .../Fixtures/php/messenger.php                |   14 +-
 ...messenger_amqp_transport_no_serializer.php |   16 +-
 ...er_middleware_factory_erroneous_format.php |   28 +-
 .../Fixtures/php/messenger_multiple_buses.php |   30 +-
 .../Fixtures/php/messenger_routing.php        |   24 +-
 .../Fixtures/php/messenger_transport.php      |   14 +-
 .../php/messenger_transport_no_serializer.php |   20 +-
 .../Fixtures/php/messenger_transports.php     |   18 +-
 .../Fixtures/php/php_errors_log_level.php     |    8 +-
 .../Fixtures/php/serializer_disabled.php      |   12 +-
 .../php/validation_email_validation_mode.php  |    8 +-
 ...ation_strict_email_and_validation_mode.php |    8 +-
 .../php/validation_strict_email_disabled.php  |    8 +-
 .../Fixtures/php/workflows.php                |  142 +-
 .../FrameworkExtensionTest.php                |  296 +--
 .../TemplatePathsCache/templates-empty.php    |    4 +-
 .../Fixtures/TemplatePathsCache/templates.php |    4 +-
 .../Tests/Functional/AutowiringTypesTest.php  |   10 +-
 .../SubRequestServiceResolutionController.php |    2 +-
 .../Functional/CachePoolClearCommandTest.php  |   12 +-
 .../Functional/ContainerDebugCommandTest.php  |   14 +-
 .../Tests/Functional/PropertyInfoTest.php     |    4 +-
 .../Functional/RouterDebugCommandTest.php     |   12 +-
 .../Tests/Functional/SerializerTest.php       |    4 +-
 .../Functional/TestServiceContainerTest.php   |    4 +-
 .../app/Resources/views/fragment.html.php     |   12 +-
 .../Functional/app/RouterDebug/bundles.php    |    4 +-
 .../app/TestServiceContainer/bundles.php      |    4 +-
 .../Tests/Routing/DelegatingLoaderTest.php    |    6 +-
 .../Tests/Routing/RouterTest.php              |   86 +-
 .../Templating/TemplateNameParserTest.php     |   34 +-
 .../Tests/Translation/TranslatorTest.php      |   98 +-
 .../Translation/Translator.php                |   18 +-
 .../CacheWarmer/ExpressionCacheWarmer.php     |    2 +-
 .../Command/UserPasswordEncoderCommand.php    |   14 +-
 .../DataCollector/SecurityDataCollector.php   |   34 +-
 .../DependencyInjection/MainConfiguration.php |   46 +-
 .../DependencyInjection/SecurityExtension.php |   92 +-
 .../Security/FirewallConfig.php               |    2 +-
 .../CacheWarmer/ExpressionCacheWarmerTest.php |    6 +-
 .../Compiler/AddSecurityVotersPassTest.php    |   12 +-
 .../CompleteConfigurationTest.php             |  200 +-
 .../Fixtures/php/argon2i_encoder.php          |   12 +-
 .../Fixtures/php/container1.php               |  134 +-
 .../Fixtures/php/firewall_provider.php        |   34 +-
 .../php/firewall_undefined_provider.php       |   26 +-
 .../Fixtures/php/listener_provider.php        |   28 +-
 .../php/listener_undefined_provider.php       |   28 +-
 .../Fixtures/php/merge.php                    |   24 +-
 .../Fixtures/php/merge_import.php             |   20 +-
 .../Fixtures/php/no_custom_user_checker.php   |   34 +-
 .../Fixtures/php/remember_me_options.php      |   22 +-
 .../MainConfigurationTest.php                 |   90 +-
 .../SecurityExtensionTest.php                 |  286 +--
 .../Tests/Functional/AutowiringTypesTest.php  |    8 +-
 .../Tests/Functional/LogoutTest.php           |   16 +-
 .../Functional/MissingUserProviderTest.php    |    6 +-
 .../UserPasswordEncoderCommandTest.php        |   60 +-
 .../app/MissingUserProvider/bundles.php       |    4 +-
 .../Tests/Security/FirewallContextTest.php    |    4 +-
 .../Compiler/TwigEnvironmentPass.php          |    6 +-
 .../DependencyInjection/TwigExtension.php     |   24 +-
 .../Bundle/TwigBundle/TemplateIterator.php    |   10 +-
 .../Compiler/TwigEnvironmentPassTest.php      |    4 +-
 .../DependencyInjection/ConfigurationTest.php |   32 +-
 .../php/customTemplateEscapingGuesser.php     |    4 +-
 .../Fixtures/php/empty.php                    |    4 +-
 .../Fixtures/php/extra.php                    |    8 +-
 .../Fixtures/php/formats.php                  |   12 +-
 .../DependencyInjection/TwigExtensionTest.php |  100 +-
 .../Tests/Functional/CacheWarmingTest.php     |   22 +-
 .../Tests/Functional/EmptyAppTest.php         |    4 +-
 .../Functional/NoTemplatingEntryTest.php      |   12 +-
 .../EventListener/WebDebugToolbarListener.php |   16 +-
 .../Controller/ProfilerControllerTest.php     |   64 +-
 .../DependencyInjection/ConfigurationTest.php |   16 +-
 .../Tests/Profiler/TemplateManagerTest.php    |   14 +-
 .../Twig/WebProfilerExtension.php             |   14 +-
 src/Symfony/Component/BrowserKit/Client.php   |   26 +-
 src/Symfony/Component/BrowserKit/Request.php  |    2 +-
 src/Symfony/Component/BrowserKit/Response.php |    6 +-
 .../Component/BrowserKit/Tests/ClientTest.php |    6 +-
 .../Cache/Adapter/AbstractAdapter.php         |    2 +-
 .../Component/Cache/Adapter/PdoAdapter.php    |    2 +-
 .../Component/Cache/Simple/PdoCache.php       |    2 +-
 .../Component/Cache/Tests/CacheItemTest.php   |   38 +-
 .../Cache/Tests/Simple/CacheTestCase.php      |    6 +-
 .../Component/Config/Definition/BaseNode.php  |   20 +-
 .../Config/Definition/BooleanNode.php         |    2 +-
 .../Component/Config/Definition/EnumNode.php  |    2 +-
 .../Component/Config/Definition/FloatNode.php |    2 +-
 .../Config/Definition/IntegerNode.php         |    2 +-
 .../Config/Definition/ScalarNode.php          |    2 +-
 .../FileLocatorFileNotFoundException.php      |    2 +-
 .../Resource/ReflectionClassResource.php      |   10 +-
 .../Config/ResourceCheckerConfigCache.php     |    4 +-
 .../ResourceCheckerConfigCacheFactory.php     |    4 +-
 .../Config/Tests/Definition/BaseNodeTest.php  |   14 +-
 .../Builder/ArrayNodeDefinitionTest.php       |   68 +-
 .../Definition/Builder/NodeDefinitionTest.php |    2 +-
 .../Config/Tests/Definition/EnumNodeTest.php  |    2 +-
 .../Resource/ReflectionClassResourceTest.php  |   54 +-
 src/Symfony/Component/Console/Application.php |   60 +-
 .../AddConsoleCommandPass.php                 |   14 +-
 .../Exception/CommandNotFoundException.php    |    2 +-
 .../Console/Formatter/OutputFormatter.php     |    6 +-
 .../Formatter/OutputFormatterStyle.php        |   68 +-
 .../Component/Console/Helper/Table.php        |   60 +-
 .../Component/Console/Helper/TableCell.php    |    6 +-
 .../Component/Console/Helper/TableStyle.php   |    8 +-
 .../Console/Output/ConsoleOutput.php          |    2 +-
 .../Console/Output/ConsoleSectionOutput.php   |    6 +-
 .../Component/Console/Output/Output.php       |    2 +-
 .../Component/Console/Style/SymfonyStyle.php  |   18 +-
 .../Console/Tester/CommandTester.php          |    4 +-
 .../Component/Console/Tester/TesterTrait.php  |    2 +-
 .../Console/Tests/ApplicationTest.php         |  262 +--
 .../AddConsoleCommandPassTest.php             |   32 +-
 .../command/command_4_with_iterators.php      |    4 +-
 .../Console/Tests/Helper/ProgressBarTest.php  |    6 +-
 .../Tests/Helper/QuestionHelperTest.php       |  164 +-
 .../Console/Tests/Helper/TableTest.php        |  528 ++---
 .../Console/Tests/Input/InputArgumentTest.php |    4 +-
 .../Tests/Input/InputDefinitionTest.php       |  130 +-
 .../Console/Tests/Input/InputOptionTest.php   |    8 +-
 .../Tests/Output/ConsoleSectionOutputTest.php |   18 +-
 .../Tests/Tester/ApplicationTesterTest.php    |    4 +-
 .../CssSelector/Node/FunctionNode.php         |    2 +-
 .../Component/CssSelector/Parser/Token.php    |    2 +-
 .../Component/Debug/DebugClassLoader.php      |   36 +-
 src/Symfony/Component/Debug/ErrorHandler.php  |   92 +-
 .../Debug/Exception/FlattenException.php      |    2 +-
 .../Debug/Exception/SilencedErrorContext.php  |    6 +-
 .../Debug/Tests/ErrorHandlerTest.php          |  116 +-
 .../Tests/Exception/FlattenExceptionTest.php  |   88 +-
 .../Compiler/AutowirePass.php                 |   10 +-
 .../DependencyInjection/Compiler/Compiler.php |    4 +-
 .../Compiler/DecoratorServicePass.php         |    6 +-
 .../Compiler/InlineServiceDefinitionsPass.php |    4 +-
 .../MergeExtensionConfigurationPass.php       |    2 +-
 .../Compiler/PassConfig.php                   |   52 +-
 .../RegisterServiceSubscribersPass.php        |    8 +-
 .../ResolveInstanceofConditionalsPass.php     |   26 +-
 .../Compiler/ValidateEnvPlaceholdersPass.php  |    6 +-
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 .../Tests/Loader/PhpFileLoaderTest.php        |   16 +-
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 .../Tests/Loader/YamlFileLoaderTest.php       |  126 +-
 .../Tests/ParameterBag/ContainerBagTest.php   |    4 +-
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 src/Symfony/Component/DomCrawler/Crawler.php  |   36 +-
 .../Debug/TraceableEventDispatcher.php        |   24 +-
 .../Debug/TraceableEventDispatcherTest.php    |    2 +-
 .../Tests/Debug/WrappedListenerTest.php       |   20 +-
 .../RegisterListenersPassTest.php             |   40 +-
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 .../Component/Filesystem/Filesystem.php       |   14 +-
 .../Filesystem/Tests/FilesystemTest.php       |  152 +-
 .../Component/Form/AbstractRendererEngine.php |   12 +-
 src/Symfony/Component/Form/ButtonBuilder.php  |   14 +-
 .../Factory/DefaultChoiceListFactory.php      |   10 +-
 .../Loader/IntlCallbackChoiceLoader.php       |    4 +-
 .../Form/ChoiceList/View/ChoiceView.php       |    2 +-
 .../BooleanToStringTransformer.php            |    2 +-
 .../Core/EventListener/ResizeFormListener.php |   24 +-
 .../Form/Extension/Core/Type/CheckboxType.php |   10 +-
 .../Form/Extension/Core/Type/ChoiceType.php   |   42 +-
 .../Form/Extension/Core/Type/CountryType.php  |   10 +-
 .../Form/Extension/Core/Type/CurrencyType.php |   10 +-
 .../Form/Extension/Core/Type/FormType.php     |   22 +-
 .../Form/Extension/Core/Type/LanguageType.php |   10 +-
 .../Form/Extension/Core/Type/LocaleType.php   |   10 +-
 .../Form/Extension/Core/Type/MoneyType.php    |    4 +-
 .../Form/Extension/Core/Type/TimezoneType.php |    8 +-
 .../Type/UploadValidatorExtension.php         |    2 +-
 src/Symfony/Component/Form/FormBuilder.php    |   20 +-
 .../Component/Form/FormConfigBuilder.php      |   16 +-
 src/Symfony/Component/Form/FormError.php      |    8 +-
 .../Form/Tests/AbstractLayoutTest.php         |    8 +-
 .../Factory/PropertyAccessDecoratorTest.php   |   40 +-
 .../Tests/ChoiceList/LazyChoiceListTest.php   |   18 +-
 .../Loader/IntlCallbackChoiceLoaderTest.php   |   16 +-
 .../Component/Form/Tests/CompoundFormTest.php |  262 +--
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 .../Extension/Core/Type/CheckboxTypeTest.php  |   20 +-
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 .../Extension/Core/Type/DateTimeTypeTest.php  |   22 +-
 .../Extension/Core/Type/DateTypeTest.php      |    4 +-
 .../Extension/Core/Type/FileTypeTest.php      |   64 +-
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 .../Extension/Core/Type/LocaleTypeTest.php    |    4 +-
 .../Extension/Core/Type/MoneyTypeTest.php     |    4 +-
 .../Extension/Core/Type/TimeTypeTest.php      |    8 +-
 .../DataCollector/FormDataExtractorTest.php   |  176 +-
 .../DependencyInjectionExtensionTest.php      |   28 +-
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 .../HttpFoundation/BinaryFileResponse.php     |    6 +-
 .../Component/HttpFoundation/Cookie.php       |    6 +-
 .../Component/HttpFoundation/HeaderBag.php    |   18 +-
 .../Component/HttpFoundation/HeaderUtils.php  |    8 +-
 .../Component/HttpFoundation/JsonResponse.php |   12 +-
 .../HttpFoundation/RedirectResponse.php       |    4 +-
 .../Component/HttpFoundation/Request.php      |  104 +-
 .../HttpFoundation/RequestMatcher.php         |   16 +-
 .../Component/HttpFoundation/Response.php     |   26 +-
 .../HttpFoundation/ResponseHeaderBag.php      |    2 +-
 .../Storage/Handler/MongoDbSessionHandler.php |   36 +-
 .../Storage/Handler/RedisSessionHandler.php   |    4 +-
 .../Session/Storage/NativeSessionStorage.php  |   20 +-
 .../HttpFoundation/StreamedResponse.php       |    4 +-
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 .../HttpFoundation/Tests/FileBagTest.php      |  114 +-
 .../HttpFoundation/Tests/HeaderUtilsTest.php  |   60 +-
 .../HttpFoundation/Tests/RequestTest.php      |  844 +++----
 .../Tests/ResponseHeaderBagTest.php           |   98 +-
 .../AbstractRedisSessionHandlerTestCase.php   |   12 +-
 .../Handler/MongoDbSessionHandlerTest.php     |   18 +-
 .../PredisClusterSessionHandlerTest.php       |    2 +-
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 .../CacheClearer/ChainCacheClearer.php        |    2 +-
 .../CacheWarmer/CacheWarmerAggregate.php      |    2 +-
 .../HttpKernel/Config/FileLocator.php         |    2 +-
 .../Controller/ArgumentResolver.php           |    8 +-
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 .../DataCollector/DumpDataCollector.php       |   22 +-
 .../DataCollector/EventDataCollector.php      |   12 +-
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 .../DataCollector/RequestDataCollector.php    |   44 +-
 .../HttpKernel/Debug/FileLinkFormatter.php    |   10 +-
 .../AddAnnotatedClassesToCachePass.php        |    8 +-
 .../ControllerArgumentValueResolverPass.php   |    2 +-
 .../DependencyInjection/Extension.php         |    2 +-
 .../LazyLoadingFragmentHandler.php            |    6 +-
 ...RegisterControllerArgumentLocatorsPass.php |   16 +-
 .../EventListener/AbstractSessionListener.php |   12 +-
 .../EventListener/ExceptionListener.php       |   20 +-
 .../EventListener/ProfilerListener.php        |   10 +-
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 .../UnsupportedMediaTypeHttpException.php     |    2 +-
 .../HttpKernel/Fragment/FragmentHandler.php   |    6 +-
 .../HttpCache/SubRequestHandler.php           |   10 +-
 src/Symfony/Component/HttpKernel/Kernel.php   |   48 +-
 .../CacheClearer/Psr6CacheClearerTest.php     |    4 +-
 .../CacheWarmer/CacheWarmerAggregateTest.php  |    6 +-
 .../Component/HttpKernel/Tests/ClientTest.php |   20 +-
 .../ServiceValueResolverTest.php              |    2 +-
 .../ContainerControllerResolverTest.php       |   26 +-
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 .../DataCollector/DumpDataCollectorTest.php   |    2 +-
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 ...ontrollerArgumentValueResolverPassTest.php |   20 +-
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 .../HttpKernel/Tests/HttpKernelTest.php       |   44 +-
 .../Component/HttpKernel/Tests/KernelTest.php |   62 +-
 .../AbstractIntlDateFormatterTest.php         |  818 +++----
 .../DateFormatter/IntlDateFormatterTest.php   |    8 +-
 .../Component/Ldap/Adapter/AbstractQuery.php  |   12 +-
 .../Ldap/Adapter/ExtLdap/EntryManager.php     |    4 +-
 .../Component/Ldap/Adapter/ExtLdap/Query.php  |    2 +-
 src/Symfony/Component/Ldap/Entry.php          |    2 +-
 src/Symfony/Component/Ldap/Ldap.php           |    8 +-
 .../Tests/Adapter/ExtLdap/LdapManagerTest.php |    6 +-
 src/Symfony/Component/Lock/Lock.php           |   14 +-
 .../Middleware/SendMessageMiddleware.php      |    2 +-
 .../Command/ConsumeMessagesCommand.php        |    8 +-
 .../Messenger/Command/DebugCommand.php        |   10 +-
 .../DataCollector/MessengerDataCollector.php  |   28 +-
 .../DependencyInjection/MessengerPass.php     |   38 +-
 src/Symfony/Component/Messenger/Envelope.php  |    4 +-
 .../Messenger/Handler/ChainHandler.php        |    2 +-
 .../Handler/Locator/HandlerLocator.php        |    2 +-
 .../Component/Messenger/MessageBus.php        |    2 +-
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 .../DependencyInjection/MessengerPassTest.php |  162 +-
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 src/Symfony/Component/Process/PhpProcess.php  |    4 +-
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 src/Symfony/Component/Routing/Route.php       |   24 +-
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 .../Tests/Fixtures/dumper/url_matcher10.php   | 2010 ++++++++---------
 .../Tests/Fixtures/dumper/url_matcher11.php   |   48 +-
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 .../Matcher/Dumper/PhpMatcherDumperTest.php   |  256 +--
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 .../Component/Routing/Tests/RouteTest.php     |    4 +-
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 .../Component/Security/Core/User/User.php     |    2 +-
 .../Firewall/GuardAuthenticationListener.php  |   24 +-
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 .../AbstractAuthenticationListener.php        |   10 +-
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 ...namePasswordFormAuthenticationListener.php |    6 +-
 ...namePasswordJsonAuthenticationListener.php |   10 +-
 .../Component/Security/Http/HttpUtils.php     |    2 +-
 .../Http/Logout/LogoutUrlGenerator.php        |    8 +-
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 .../Controller/UserValueResolverTest.php      |   10 +-
 .../Tests/Firewall/ContextListenerTest.php    |   52 +-
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 .../Serializer/Encoder/ChainDecoder.php       |   10 +-
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 .../ClassDiscriminatorFromClassMetadata.php   |    2 +-
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 .../Normalizer/ArrayDenormalizer.php          |    4 +-
 .../ConstraintViolationListNormalizer.php     |   16 +-
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 .../Normalizer/GetSetMethodNormalizer.php     |   18 +-
 .../Normalizer/ObjectNormalizer.php           |   10 +-
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 .../Tests/Annotation/DiscriminatorMapTest.php |   16 +-
 .../Tests/Encoder/CsvEncoderTest.php          |   40 +-
 .../Tests/Encoder/XmlEncoderTest.php          |   36 +-
 .../Mapping/ClassDiscriminatorMappingTest.php |    8 +-
 .../Mapping/Loader/AnnotationLoaderTest.php   |    4 +-
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 .../ConstraintViolationListNormalizerTest.php |   24 +-
 .../Normalizer/DataUriNormalizerTest.php      |   52 +-
 .../Tests/Normalizer/ObjectNormalizerTest.php |  338 +--
 .../Serializer/Tests/SerializerTest.php       |   36 +-
 .../Translation/Command/XliffLintCommand.php  |   22 +-
 .../DependencyInjection/TranslatorPass.php    |    6 +-
 .../Translation/MessageCatalogue.php          |   16 +-
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 .../TranslationPassTest.php                   |   14 +-
 .../Tests/Dumper/FileDumperTest.php           |   10 +-
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 .../Validator/Constraints/Expression.php      |    2 +-
 .../Component/Validator/Constraints/Url.php   |    6 +-
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 .../Tests/Constraints/ChoiceValidatorTest.php |  100 +-
 .../Validator/Tests/Constraints/EmailTest.php |    6 +-
 .../Tests/Constraints/EmailValidatorTest.php  |  238 +-
 .../Constraints/ExpressionValidatorTest.php   |    8 +-
 .../Tests/Constraints/LocaleValidatorTest.php |   64 +-
 .../Tests/Constraints/UrlValidatorTest.php    |  292 +--
 .../Component/VarDumper/Caster/DateCaster.php |   10 +-
 .../VarDumper/Caster/ReflectionCaster.php     |   52 +-
 .../VarDumper/Cloner/AbstractCloner.php       |  234 +-
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 .../VarDumper/Tests/Caster/DateCasterTest.php |  154 +-
 .../VarDumper/Tests/Caster/GmpCasterTest.php  |    6 +-
 .../VarDumper/Tests/Caster/SplCasterTest.php  |   28 +-
 .../Command/Descriptor/CliDescriptorTest.php  |   52 +-
 .../Command/Descriptor/HtmlDescriptorTest.php |   56 +-
 .../Tests/Dumper/ServerDumperTest.php         |   10 +-
 .../VarDumper/Tests/Server/ConnectionTest.php |   10 +-
 .../Tests/Test/VarDumperTestTraitTest.php     |    2 +-
 .../Workflow/Dumper/PlantUmlDumper.php        |   26 +-
 .../Metadata/InMemoryMetadataStore.php        |    6 +-
 src/Symfony/Component/Workflow/Registry.php   |    8 +-
 .../Workflow/Tests/DefinitionBuilderTest.php  |    8 +-
 .../Workflow/Tests/DefinitionTest.php         |   12 +-
 .../Tests/Dumper/PlantUmlDumperTest.php       |   22 +-
 .../Metadata/InMemoryMetadataStoreTest.php    |   26 +-
 .../Component/Workflow/Tests/RegistryTest.php |    8 +-
 .../Component/Workflow/Tests/WorkflowTest.php |   62 +-
 .../Component/Workflow/TransitionBlocker.php  |   10 +-
 .../Workflow/TransitionBlockerList.php        |    6 +-
 src/Symfony/Component/Workflow/Workflow.php   |    8 +-
 src/Symfony/Component/Yaml/Inline.php         |   36 +-
 src/Symfony/Component/Yaml/Parser.php         |   34 +-
 .../Component/Yaml/Tests/DumperTest.php       |  120 +-
 .../Component/Yaml/Tests/InlineTest.php       |  474 ++--
 .../Component/Yaml/Tests/ParserTest.php       |  666 +++---
 647 files changed, 11991 insertions(+), 11991 deletions(-)

diff --git a/src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php b/src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php
index 8cebac72c161..d4a86a7d5440 100644
--- a/src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php
+++ b/src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php
@@ -33,7 +33,7 @@ class DoctrineDataCollector extends DataCollector
     /**
      * @var DebugStack[]
      */
-    private $loggers = array();
+    private $loggers = [];
 
     public function __construct(ManagerRegistry $registry)
     {
@@ -58,24 +58,24 @@ public function addLogger($name, DebugStack $logger)
      */
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
-        $queries = array();
+        $queries = [];
         foreach ($this->loggers as $name => $logger) {
             $queries[$name] = $this->sanitizeQueries($name, $logger->queries);
         }
 
-        $this->data = array(
+        $this->data = [
             'queries' => $queries,
             'connections' => $this->connections,
             'managers' => $this->managers,
-        );
+        ];
     }
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
 
         foreach ($this->loggers as $logger) {
-            $logger->queries = array();
+            $logger->queries = [];
             $logger->currentQuery = 0;
         }
     }
@@ -133,10 +133,10 @@ private function sanitizeQuery($connectionName, $query)
     {
         $query['explainable'] = true;
         if (null === $query['params']) {
-            $query['params'] = array();
+            $query['params'] = [];
         }
         if (!\is_array($query['params'])) {
-            $query['params'] = array($query['params']);
+            $query['params'] = [$query['params']];
         }
         foreach ($query['params'] as $j => $param) {
             if (isset($query['types'][$j])) {
@@ -180,12 +180,12 @@ private function sanitizeParam($var): array
             $className = \get_class($var);
 
             return method_exists($var, '__toString') ?
-                array(sprintf('/* Object(%s): */"%s"', $className, $var->__toString()), false) :
-                array(sprintf('/* Object(%s) */', $className), false);
+                [sprintf('/* Object(%s): */"%s"', $className, $var->__toString()), false] :
+                [sprintf('/* Object(%s) */', $className), false];
         }
 
         if (\is_array($var)) {
-            $a = array();
+            $a = [];
             $original = true;
             foreach ($var as $k => $v) {
                 list($value, $orig) = $this->sanitizeParam($v);
@@ -193,13 +193,13 @@ private function sanitizeParam($var): array
                 $a[$k] = $value;
             }
 
-            return array($a, $original);
+            return [$a, $original];
         }
 
         if (\is_resource($var)) {
-            return array(sprintf('/* Resource(%s) */', get_resource_type($var)), false);
+            return [sprintf('/* Resource(%s) */', get_resource_type($var)), false];
         }
 
-        return array($var, true);
+        return [$var, true];
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php
index 5b0f2ddbe305..1836d7decd79 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php
@@ -27,12 +27,12 @@ abstract class AbstractDoctrineExtension extends Extension
     /**
      * Used inside metadata driver method to simplify aggregation of data.
      */
-    protected $aliasMap = array();
+    protected $aliasMap = [];
 
     /**
      * Used inside metadata driver method to simplify aggregation of data.
      */
-    protected $drivers = array();
+    protected $drivers = [];
 
     /**
      * @param array            $objectManager A configured object manager
@@ -46,10 +46,10 @@ protected function loadMappingInformation(array $objectManager, ContainerBuilder
             // automatically register bundle mappings
             foreach (array_keys($container->getParameter('kernel.bundles')) as $bundle) {
                 if (!isset($objectManager['mappings'][$bundle])) {
-                    $objectManager['mappings'][$bundle] = array(
+                    $objectManager['mappings'][$bundle] = [
                         'mapping' => true,
                         'is_bundle' => true,
-                    );
+                    ];
                 }
             }
         }
@@ -59,11 +59,11 @@ protected function loadMappingInformation(array $objectManager, ContainerBuilder
                 continue;
             }
 
-            $mappingConfig = array_replace(array(
+            $mappingConfig = array_replace([
                 'dir' => false,
                 'type' => false,
                 'prefix' => false,
-            ), (array) $mappingConfig);
+            ], (array) $mappingConfig);
 
             $mappingConfig['dir'] = $container->getParameterBag()->resolveValue($mappingConfig['dir']);
             // a bundle configuration is detected by realizing that the specified dir is not absolute and existing
@@ -153,7 +153,7 @@ protected function getMappingDriverBundleConfigDefaults(array $bundleConfig, \Re
         }
 
         if (!$bundleConfig['dir']) {
-            if (\in_array($bundleConfig['type'], array('annotation', 'staticphp'))) {
+            if (\in_array($bundleConfig['type'], ['annotation', 'staticphp'])) {
                 $bundleConfig['dir'] = $bundleDir.'/'.$this->getMappingObjectDefaultName();
             } else {
                 $bundleConfig['dir'] = $bundleDir.'/'.$this->getMappingResourceConfigDirectory();
@@ -197,25 +197,25 @@ protected function registerMappingDrivers($objectManager, ContainerBuilder $cont
                 }
                 $mappingDriverDef->setArguments($args);
             } elseif ('annotation' == $driverType) {
-                $mappingDriverDef = new Definition('%'.$this->getObjectManagerElementName('metadata.'.$driverType.'.class%'), array(
+                $mappingDriverDef = new Definition('%'.$this->getObjectManagerElementName('metadata.'.$driverType.'.class%'), [
                     new Reference($this->getObjectManagerElementName('metadata.annotation_reader')),
                     array_values($driverPaths),
-                ));
+                ]);
             } else {
-                $mappingDriverDef = new Definition('%'.$this->getObjectManagerElementName('metadata.'.$driverType.'.class%'), array(
+                $mappingDriverDef = new Definition('%'.$this->getObjectManagerElementName('metadata.'.$driverType.'.class%'), [
                     array_values($driverPaths),
-                ));
+                ]);
             }
             $mappingDriverDef->setPublic(false);
             if (false !== strpos($mappingDriverDef->getClass(), 'yml') || false !== strpos($mappingDriverDef->getClass(), 'xml')) {
-                $mappingDriverDef->setArguments(array(array_flip($driverPaths)));
-                $mappingDriverDef->addMethodCall('setGlobalBasename', array('mapping'));
+                $mappingDriverDef->setArguments([array_flip($driverPaths)]);
+                $mappingDriverDef->addMethodCall('setGlobalBasename', ['mapping']);
             }
 
             $container->setDefinition($mappingService, $mappingDriverDef);
 
             foreach ($driverPaths as $prefix => $driverPath) {
-                $chainDriverDef->addMethodCall('addDriver', array(new Reference($mappingService), $prefix));
+                $chainDriverDef->addMethodCall('addDriver', [new Reference($mappingService), $prefix]);
             }
         }
 
@@ -240,7 +240,7 @@ protected function assertValidMappingConfiguration(array $mappingConfig, $object
             throw new \InvalidArgumentException(sprintf('Specified non-existing directory "%s" as Doctrine mapping source.', $mappingConfig['dir']));
         }
 
-        if (!\in_array($mappingConfig['type'], array('xml', 'yml', 'annotation', 'php', 'staticphp'))) {
+        if (!\in_array($mappingConfig['type'], ['xml', 'yml', 'annotation', 'php', 'staticphp'])) {
             throw new \InvalidArgumentException(sprintf('Can only configure "xml", "yml", "annotation", "php" or '.
                 '"staticphp" through the DoctrineBundle. Use your own bundle to configure other metadata drivers. '.
                 'You can register them by adding a new driver to the '.
@@ -326,11 +326,11 @@ protected function loadCacheDriver($cacheName, $objectManagerName, array $cacheD
                 $cacheDef = new Definition($memcachedClass);
                 $memcachedInstance = new Definition($memcachedInstanceClass);
                 $memcachedInstance->setPrivate(true);
-                $memcachedInstance->addMethodCall('addServer', array(
+                $memcachedInstance->addMethodCall('addServer', [
                     $memcachedHost, $memcachedPort,
-                ));
+                ]);
                 $container->setDefinition($this->getObjectManagerElementName(sprintf('%s_memcached_instance', $objectManagerName)), $memcachedInstance);
-                $cacheDef->addMethodCall('setMemcached', array(new Reference($this->getObjectManagerElementName(sprintf('%s_memcached_instance', $objectManagerName)))));
+                $cacheDef->addMethodCall('setMemcached', [new Reference($this->getObjectManagerElementName(sprintf('%s_memcached_instance', $objectManagerName)))]);
                 break;
              case 'redis':
                 $redisClass = !empty($cacheDriver['class']) ? $cacheDriver['class'] : '%'.$this->getObjectManagerElementName('cache.redis.class').'%';
@@ -340,11 +340,11 @@ protected function loadCacheDriver($cacheName, $objectManagerName, array $cacheD
                 $cacheDef = new Definition($redisClass);
                 $redisInstance = new Definition($redisInstanceClass);
                 $redisInstance->setPrivate(true);
-                $redisInstance->addMethodCall('connect', array(
+                $redisInstance->addMethodCall('connect', [
                     $redisHost, $redisPort,
-                ));
+                ]);
                 $container->setDefinition($this->getObjectManagerElementName(sprintf('%s_redis_instance', $objectManagerName)), $redisInstance);
-                $cacheDef->addMethodCall('setRedis', array(new Reference($this->getObjectManagerElementName(sprintf('%s_redis_instance', $objectManagerName)))));
+                $cacheDef->addMethodCall('setRedis', [new Reference($this->getObjectManagerElementName(sprintf('%s_redis_instance', $objectManagerName)))]);
                 break;
             case 'apc':
             case 'apcu':
@@ -373,7 +373,7 @@ protected function loadCacheDriver($cacheName, $objectManagerName, array $cacheD
             $cacheDriver['namespace'] = $namespace;
         }
 
-        $cacheDef->addMethodCall('setNamespace', array($cacheDriver['namespace']));
+        $cacheDef->addMethodCall('setNamespace', [$cacheDriver['namespace']]);
 
         $container->setDefinition($cacheDriverServiceId, $cacheDef);
 
@@ -396,10 +396,10 @@ protected function fixManagersAutoMappings(array $managerConfigs, array $bundles
                         continue 2;
                     }
                 }
-                $managerConfigs[$autoMappedManager]['mappings'][$bundle] = array(
+                $managerConfigs[$autoMappedManager]['mappings'][$bundle] = [
                     'mapping' => true,
                     'is_bundle' => true,
-                );
+                ];
             }
             $managerConfigs[$autoMappedManager]['auto_mapping'] = false;
         }
diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
index 44ad1562196b..01894d41bf0a 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
@@ -117,7 +117,7 @@ abstract class RegisterMappingsPass implements CompilerPassInterface
      *                                                      register alias
      * @param string[]             $aliasMap                Map of alias to namespace
      */
-    public function __construct($driver, array $namespaces, array $managerParameters, string $driverPattern, $enabledParameter = false, string $configurationPattern = '', string $registerAliasMethodName = '', array $aliasMap = array())
+    public function __construct($driver, array $namespaces, array $managerParameters, string $driverPattern, $enabledParameter = false, string $configurationPattern = '', string $registerAliasMethodName = '', array $aliasMap = [])
     {
         $this->driver = $driver;
         $this->namespaces = $namespaces;
@@ -146,7 +146,7 @@ public function process(ContainerBuilder $container)
         // Definition for a Doctrine\Common\Persistence\Mapping\Driver\MappingDriverChain
         $chainDriverDef = $container->getDefinition($chainDriverDefService);
         foreach ($this->namespaces as $namespace) {
-            $chainDriverDef->addMethodCall('addDriver', array($mappingDriverDef, $namespace));
+            $chainDriverDef->addMethodCall('addDriver', [$mappingDriverDef, $namespace]);
         }
 
         if (!\count($this->aliasMap)) {
@@ -157,7 +157,7 @@ public function process(ContainerBuilder $container)
         // Definition of the Doctrine\...\Configuration class specific to the Doctrine flavour.
         $configurationServiceDefinition = $container->getDefinition($configurationServiceName);
         foreach ($this->aliasMap as $alias => $namespace) {
-            $configurationServiceDefinition->addMethodCall($this->registerAliasMethodName, array($alias, $namespace));
+            $configurationServiceDefinition->addMethodCall($this->registerAliasMethodName, [$alias, $namespace]);
         }
     }
 
diff --git a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
index 17b995297d3f..acf2665ee820 100644
--- a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
+++ b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
@@ -26,7 +26,7 @@ class DoctrineOrmTypeGuesser implements FormTypeGuesserInterface
 {
     protected $registry;
 
-    private $cache = array();
+    private $cache = [];
 
     public function __construct(ManagerRegistry $registry)
     {
@@ -39,7 +39,7 @@ public function __construct(ManagerRegistry $registry)
     public function guessType($class, $property)
     {
         if (!$ret = $this->getMetadata($class)) {
-            return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::LOW_CONFIDENCE);
+            return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
         }
 
         list($metadata, $name) = $ret;
@@ -48,44 +48,44 @@ public function guessType($class, $property)
             $multiple = $metadata->isCollectionValuedAssociation($property);
             $mapping = $metadata->getAssociationMapping($property);
 
-            return new TypeGuess('Symfony\Bridge\Doctrine\Form\Type\EntityType', array('em' => $name, 'class' => $mapping['targetEntity'], 'multiple' => $multiple), Guess::HIGH_CONFIDENCE);
+            return new TypeGuess('Symfony\Bridge\Doctrine\Form\Type\EntityType', ['em' => $name, 'class' => $mapping['targetEntity'], 'multiple' => $multiple], Guess::HIGH_CONFIDENCE);
         }
 
         switch ($metadata->getTypeOfField($property)) {
             case Type::TARRAY:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::BOOLEAN:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', [], Guess::HIGH_CONFIDENCE);
             case Type::DATETIME:
             case Type::DATETIMETZ:
             case 'vardatetime':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', [], Guess::HIGH_CONFIDENCE);
             case 'datetime_immutable':
             case 'datetimetz_immutable':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', array('input' => 'datetime_immutable'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', ['input' => 'datetime_immutable'], Guess::HIGH_CONFIDENCE);
             case 'dateinterval':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateIntervalType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateIntervalType', [], Guess::HIGH_CONFIDENCE);
             case Type::DATE:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', [], Guess::HIGH_CONFIDENCE);
             case 'date_immutable':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', array('input' => 'datetime_immutable'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', ['input' => 'datetime_immutable'], Guess::HIGH_CONFIDENCE);
             case Type::TIME:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', [], Guess::HIGH_CONFIDENCE);
             case 'time_immutable':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', array('input' => 'datetime_immutable'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', ['input' => 'datetime_immutable'], Guess::HIGH_CONFIDENCE);
             case Type::DECIMAL:
             case Type::FLOAT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::INTEGER:
             case Type::BIGINT:
             case Type::SMALLINT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::STRING:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::TEXT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextareaType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextareaType', [], Guess::MEDIUM_CONFIDENCE);
             default:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::LOW_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
         }
     }
 
@@ -140,7 +140,7 @@ public function guessMaxLength($class, $property)
                 return new ValueGuess($mapping['length'], Guess::HIGH_CONFIDENCE);
             }
 
-            if (\in_array($ret[0]->getTypeOfField($property), array(Type::DECIMAL, Type::FLOAT))) {
+            if (\in_array($ret[0]->getTypeOfField($property), [Type::DECIMAL, Type::FLOAT])) {
                 return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
             }
         }
@@ -153,7 +153,7 @@ public function guessPattern($class, $property)
     {
         $ret = $this->getMetadata($class);
         if ($ret && isset($ret[0]->fieldMappings[$property]) && !$ret[0]->hasAssociation($property)) {
-            if (\in_array($ret[0]->getTypeOfField($property), array(Type::DECIMAL, Type::FLOAT))) {
+            if (\in_array($ret[0]->getTypeOfField($property), [Type::DECIMAL, Type::FLOAT])) {
                 return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
             }
       
10000
  }
@@ -171,7 +171,7 @@ protected function getMetadata($class)
         $this->cache[$class] = null;
         foreach ($this->registry->getManagers() as $name => $em) {
             try {
-                return $this->cache[$class] = array($em->getClassMetadata($class), $name);
+                return $this->cache[$class] = [$em->getClassMetadata($class), $name];
             } catch (MappingException $e) {
                 // not an entity or mapped super class
             } catch (LegacyMappingException $e) {
diff --git a/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php b/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
index 22517181f759..1ec496b781c5 100644
--- a/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
+++ b/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
@@ -31,11 +31,11 @@ public static function getSubscribedEvents()
     {
         // Higher priority than core MergeCollectionListener so that this one
         // is called before
-        return array(
-            FormEvents::SUBMIT => array(
-                array('onSubmit', 5),
-            ),
-        );
+        return [
+            FormEvents::SUBMIT => [
+                ['onSubmit', 5],
+            ],
+        ];
     }
 
     public function onSubmit(FormEvent $event)
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php b/src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php
index 8e9abd618b69..259532879016 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php
@@ -22,27 +22,27 @@ class DoctrineDataCollectorTest extends TestCase
 {
     public function testCollectConnections()
     {
-        $c = $this->createCollector(array());
+        $c = $this->createCollector([]);
         $c->collect(new Request(), new Response());
-        $this->assertEquals(array('default' => 'doctrine.dbal.default_connection'), $c->getConnections());
+        $this->assertEquals(['default' => 'doctrine.dbal.default_connection'], $c->getConnections());
     }
 
     public function testCollectManagers()
     {
-        $c = $this->createCollector(array());
+        $c = $this->createCollector([]);
         $c->collect(new Request(), new Response());
-        $this->assertEquals(array('default' => 'doctrine.orm.default_entity_manager'), $c->getManagers());
+        $this->assertEquals(['default' => 'doctrine.orm.default_entity_manager'], $c->getManagers());
     }
 
     public function testCollectQueryCount()
     {
-        $c = $this->createCollector(array());
+        $c = $this->createCollector([]);
         $c->collect(new Request(), new Response());
         $this->assertEquals(0, $c->getQueryCount());
 
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 0),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 0],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
         $this->assertEquals(1, $c->getQueryCount());
@@ -50,21 +50,21 @@ public function testCollectQueryCount()
 
     public function testCollectTime()
     {
-        $c = $this->createCollector(array());
+        $c = $this->createCollector([]);
         $c->collect(new Request(), new Response());
         $this->assertEquals(0, $c->getTime());
 
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
         $this->assertEquals(1, $c->getTime());
 
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
-            array('sql' => 'SELECT * FROM table2', 'params' => array(), 'types' => array(), 'executionMS' => 2),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 1],
+            ['sql' => 'SELECT * FROM table2', 'params' => [], 'types' => [], 'executionMS' => 2],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
         $this->assertEquals(3, $c->getTime());
@@ -75,9 +75,9 @@ public function testCollectTime()
      */
     public function testCollectQueries($param, $types, $expected, $explainable)
     {
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1 WHERE field1 = ?1', 'params' => array($param), 'types' => $types, 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1 WHERE field1 = ?1', 'params' => [$param], 'types' => $types, 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
 
@@ -88,32 +88,32 @@ public function testCollectQueries($param, $types, $expected, $explainable)
 
     public function testCollectQueryWithNoParams()
     {
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
-            array('sql' => 'SELECT * FROM table1', 'params' => null, 'types' => null, 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 1],
+            ['sql' => 'SELECT * FROM table1', 'params' => null, 'types' => null, 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
 
         $collectedQueries = $c->getQueries();
-        $this->assertEquals(array(), $collectedQueries['default'][0]['params']);
+        $this->assertEquals([], $collectedQueries['default'][0]['params']);
         $this->assertTrue($collectedQueries['default'][0]['explainable']);
-        $this->assertEquals(array(), $collectedQueries['default'][1]['params']);
+        $this->assertEquals([], $collectedQueries['default'][1]['params']);
         $this->assertTrue($collectedQueries['default'][1]['explainable']);
     }
 
     public function testReset()
     {
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1', 'params' => [], 'types' => [], 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
 
         $c->reset();
         $c->collect(new Request(), new Response());
 
-        $this->assertEquals(array('default' => array()), $c->getQueries());
+        $this->assertEquals(['default' => []], $c->getQueries());
     }
 
     /**
@@ -121,9 +121,9 @@ public function testReset()
      */
     public function testSerialization($param, $types, $expected, $explainable)
     {
-        $queries = array(
-            array('sql' => 'SELECT * FROM table1 WHERE field1 = ?1', 'params' => array($param), 'types' => $types, 'executionMS' => 1),
-        );
+        $queries = [
+            ['sql' => 'SELECT * FROM table1 WHERE field1 = ?1', 'params' => [$param], 'types' => $types, 'executionMS' => 1],
+        ];
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
         $c = unserialize(serialize($c));
@@ -135,25 +135,25 @@ public function testSerialization($param, $types, $expected, $explainable)
 
     public function paramProvider()
     {
-        $tests = array(
-            array('some value', array(), 'some value', true),
-            array(1, array(), 1, true),
-            array(true, array(), true, true),
-            array(null, array(), null, true),
-            array(new \DateTime('2011-09-11'), array('date'), '2011-09-11', true),
-            array(fopen(__FILE__, 'r'), array(), '/* Resource(stream) */', false),
-            array(new \stdClass(), array(), '/* Object(stdClass) */', false),
-            array(
+        $tests = [
+            ['some value', [], 'some value', true],
+            [1, [], 1, true],
+            [true, [], true, true],
+            [null, [], null, true],
+            [new \DateTime('2011-09-11'), ['date'], '2011-09-11', true],
+            [fopen(__FILE__, 'r'), [], '/* Resource(stream) */', false],
+            [new \stdClass(), [], '/* Object(stdClass) */', false],
+            [
                 new StringRepresentableClass(),
-                array(),
+                [],
                 '/* Object(Symfony\Bridge\Doctrine\Tests\DataCollector\StringRepresentableClass): */"string representation"',
                 false,
-            ),
-        );
+            ],
+        ];
 
         if (version_compare(Version::VERSION, '2.6', '>=')) {
-            $tests[] = array('this is not a date', array('date'), 'this is not a date', false);
-            $tests[] = array(new \stdClass(), array('date'), '/* Object(stdClass) */', false);
+            $tests[] = ['this is not a date', ['date'], 'this is not a date', false];
+            $tests[] = [new \stdClass(), ['date'], '/* Object(stdClass) */', false];
         }
 
         return $tests;
@@ -172,11 +172,11 @@ private function createCollector($queries)
         $registry
             ->expects($this->any())
             ->method('getConnectionNames')
-            ->will($this->returnValue(array('default' => 'doctrine.dbal.default_connection')));
+            ->will($this->returnValue(['default' => 'doctrine.dbal.default_connection']));
         $registry
             ->expects($this->any())
             ->method('getManagerNames')
-            ->will($this->returnValue(array('default' => 'doctrine.orm.default_entity_manager')));
+            ->will($this->returnValue(['default' => 'doctrine.orm.default_entity_manager']));
         $registry->expects($this->any())
             ->method('getConnection')
             ->will($this->returnValue($connection));
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
index 00f292ff0a0a..fda466112e6b 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
@@ -32,13 +32,13 @@ protected function setUp()
 
         $this->extension = $this
             ->getMockBuilder('Symfony\Bridge\Doctrine\DependencyInjection\AbstractDoctrineExtension')
-            ->setMethods(array(
+            ->setMethods([
                 'getMappingResourceConfigDirectory',
                 'getObjectManagerElementName',
                 'getMappingObjectDefaultName',
                 'getMappingResourceExtension',
                 'load',
-            ))
+            ])
             ->getMock()
         ;
 
@@ -54,19 +54,19 @@ protected function setUp()
      */
     public function testFixManagersAutoMappingsWithTwoAutomappings()
     {
-        $emConfigs = array(
-            'em1' => array(
+        $emConfigs = [
+            'em1' => [
                 'auto_mapping' => true,
-            ),
-            'em2' => array(
+            ],
+            'em2' => [
                 'auto_mapping' => true,
-            ),
-        );
+            ],
+        ];
 
-        $bundles = array(
+        $bundles = [
             'FirstBundle' => 'My\FirstBundle',
             'SecondBundle' => 'My\SecondBundle',
-        );
+        ];
 
         $reflection = new \ReflectionClass(\get_class($this->extension));
         $method = $reflection->getMethod('fixManagersAutoMappings');
@@ -77,69 +77,69 @@ public function testFixManagersAutoMappingsWithTwoAutomappings()
 
     public function getAutomappingData()
     {
-        return array(
-            array(
-                array( // no auto mapping on em1
+        return [
+            [
+                [ // no auto mapping on em1
                     'auto_mapping' => false,
-                ),
-                array( // no auto mapping on em2
+                ],
+                [ // no auto mapping on em2
                     'auto_mapping' => false,
-                ),
-                array(),
-                array(),
-            ),
-            array(
-                array( // no auto mapping on em1
+                ],
+                [],
+                [],
+            ],
+            [
+                [ // no auto mapping on em1
                     'auto_mapping' => false,
-                ),
-                array( // auto mapping enabled on em2
+                ],
+                [ // auto mapping enabled on em2
                     'auto_mapping' => true,
-                ),
-                array(),
-                array(
-                    'mappings' => array(
-                        'FirstBundle' => array(
+                ],
+                [],
+                [
+                    'mappings' => [
+                        'FirstBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                        'SecondBundle' => array(
+                        ],
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-            ),
-            array(
-                array( // no auto mapping on em1, but it defines SecondBundle as own
+                        ],
+                    ],
+                ],
+            ],
+            [
+                [ // no auto mapping on em1, but it defines SecondBundle as own
                     'auto_mapping' => false,
-                    'mappings' => array(
-                        'SecondBundle' => array(
+                    'mappings' => [
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-                array( // auto mapping enabled on em2
+                        ],
+                    ],
+                ],
+                [ // auto mapping enabled on em2
                     'auto_mapping' => true,
-                ),
-                array(
-                    'mappings' => array(
-                        'SecondBundle' => array(
+                ],
+                [
+                    'mappings' => [
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-                array(
-                    'mappings' => array(
-                        'FirstBundle' => array(
+                        ],
+                    ],
+                ],
+                [
+                    'mappings' => [
+                        'FirstBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-            ),
-        );
+                        ],
+                    ],
+                ],
+            ],
+        ];
     }
 
     /**
@@ -147,15 +147,15 @@ public function getAutomappingData()
      */
     public function testFixManagersAutoMappings(array $originalEm1, array $originalEm2, array $expectedEm1, array $expectedEm2)
     {
-        $emConfigs = array(
+        $emConfigs = [
             'em1' => $originalEm1,
             'em2' => $originalEm2,
-        );
+        ];
 
-        $bundles = array(
+        $bundles = [
             'FirstBundle' => 'My\FirstBundle',
             'SecondBundle' => 'My\SecondBundle',
-        );
+        ];
 
         $reflection = new \ReflectionClass(\get_class($this->extension));
         $method = $reflection->getMethod('fixManagersAutoMappings');
@@ -163,39 +163,39 @@ public function testFixManagersAutoMappings(array $originalEm1, array $originalE
 
         $newEmConfigs = $method->invoke($this->extension, $emConfigs, $bundles);
 
-        $this->assertEquals($newEmConfigs['em1'], array_merge(array(
+        $this->assertEquals($newEmConfigs['em1'], array_merge([
             'auto_mapping' => false,
-        ), $expectedEm1));
-        $this->assertEquals($newEmConfigs['em2'], array_merge(array(
+        ], $expectedEm1));
+        $this->assertEquals($newEmConfigs['em2'], array_merge([
             'auto_mapping' => false,
-        ), $expectedEm2));
+        ], $expectedEm2));
     }
 
     public function providerBasicDrivers()
     {
-        return array(
-            array('doctrine.orm.cache.apc.class',       array('type' => 'apc')),
-            array('doctrine.orm.cache.apcu.class',      array('type' => 'apcu')),
-            array('doctrine.orm.cache.array.class',     array('type' => 'array')),
-            array('doctrine.orm.cache.xcache.class',    array('type' => 'xcache')),
-            array('doctrine.orm.cache.wincache.class',  array('type' => 'wincache')),
-            array('doctrine.orm.cache.zenddata.class',  array('type' => 'zenddata')),
-            array('doctrine.orm.cache.redis.class',     array('type' => 'redis'),     array('setRedis')),
-            array('doctrine.orm.cache.memcached.class', array('type' => 'memcached'), array('setMemcached')),
-        );
+        return [
+            ['doctrine.orm.cache.apc.class',       ['type' => 'apc']],
+            ['doctrine.orm.cache.apcu.class',      ['type' => 'apcu']],
+            ['doctrine.orm.cache.array.class',     ['type' => 'array']],
+            ['doctrine.orm.cache.xcache.class',    ['type' => 'xcache']],
+            ['doctrine.orm.cache.wincache.class',  ['type' => 'wincache']],
+            ['doctrine.orm.cache.zenddata.class',  ['type' => 'zenddata']],
+            ['doctrine.orm.cache.redis.class',     ['type' => 'redis'],     ['setRedis']],
+            ['doctrine.orm.cache.memcached.class', ['type' => 'memcached'], ['setMemcached']],
+        ];
     }
 
     /**
      * @dataProvider providerBasicDrivers
      */
-    public function testLoadBasicCacheDriver(string $class, array $config, array $expectedCalls = array())
+    public function testLoadBasicCacheDriver(string $class, array $config, array $expectedCalls = [])
     {
         $container = $this->createContainer();
         $cacheName = 'metadata_cache';
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
             'metadata_cache_driver' => $config,
-        );
+        ];
 
         $this->invokeLoadCacheDriver($objectManager, $container, $cacheName);
 
@@ -219,13 +219,13 @@ public function testServiceCacheDriver()
         $cacheName = 'metadata_cache';
         $container = $this->createContainer();
         $definition = new Definition('%doctrine.orm.cache.apc.class%');
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
-            'metadata_cache_driver' => array(
+            'metadata_cache_driver' => [
                 'type' => 'service',
                 'id' => 'service_driver',
-            ),
-        );
+            ],
+        ];
 
         $container->setDefinition('service_driver', $definition);
 
@@ -242,12 +242,12 @@ public function testUnrecognizedCacheDriverException()
     {
         $cacheName = 'metadata_cache';
         $container = $this->createContainer();
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
-            'metadata_cache_driver' => array(
+            'metadata_cache_driver' => [
                 'type' => 'unrecognized_type',
-            ),
-        );
+            ],
+        ];
 
         $this->invokeLoadCacheDriver($objectManager, $container, $cacheName);
     }
@@ -258,21 +258,21 @@ protected function invokeLoadCacheDriver(array $objectManager, ContainerBuilder
 
         $method->setAccessible(true);
 
-        $method->invokeArgs($this->extension, array($objectManager, $container, $cacheName));
+        $method->invokeArgs($this->extension, [$objectManager, $container, $cacheName]);
     }
 
     /**
      * @return \Symfony\Component\DependencyInjection\ContainerBuilder
      */
-    protected function createContainer(array $data = array())
+    protected function createContainer(array $data = [])
     {
-        return new ContainerBuilder(new ParameterBag(array_merge(array(
-            'kernel.bundles' => array('FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'),
+        return new ContainerBuilder(new ParameterBag(array_merge([
+            'kernel.bundles' => ['FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'],
             'kernel.cache_dir' => __DIR__,
             'kernel.debug' => false,
             'kernel.environment' => 'test',
             'kernel.name' => 'kernel',
             'kernel.root_dir' => __DIR__,
-        ), $data)));
+        ], $data)));
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
index b24a374fedf5..de6f3a3aa970 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
@@ -81,9 +81,9 @@ protected function setUp()
             ->disableOriginalConstructor()
             ->getMock();
         $this->objectLoader = $this->getMockBuilder('Symfony\Bridge\Doctrine\Form\ChoiceList\EntityLoaderInterface')->getMock();
-        $this->obj1 = (object) array('name' => 'A');
-        $this->obj2 = (object) array('name' => 'B');
-        $this->obj3 = (object) array('name' => 'C');
+        $this->obj1 = (object) ['name' => 'A'];
+        $this->obj2 = (object) ['name' => 'B'];
+        $this->obj3 = (object) ['name' => 'C'];
 
         $this->om->expects($this->any())
             ->method('getRepository')
@@ -104,7 +104,7 @@ public function testLoadChoiceList()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $value = function () {};
         $choiceList = new ArrayChoiceList($choices, $value);
 
@@ -128,7 +128,7 @@ public function testLoadChoiceListUsesObjectLoaderIfAvailable()
             $this->objectLoader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $choiceList = new ArrayChoiceList($choices);
 
         $this->repository->expects($this->never())
@@ -153,17 +153,17 @@ public function testLoadValuesForChoices()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
 
         $this->repository->expects($this->once())
             ->method('findAll')
             ->willReturn($choices);
 
-        $this->assertSame(array('1', '2'), $loader->loadValuesForChoices(array($this->obj2, $this->obj3)));
+        $this->assertSame(['1', '2'], $loader->loadValuesForChoices([$this->obj2, $this->obj3]));
 
         // no further loads on subsequent calls
 
-        $this->assertSame(array('1', '2'), $loader->loadValuesForChoices(array($this->obj2, $this->obj3)));
+        $this->assertSame(['1', '2'], $loader->loadValuesForChoices([$this->obj2, $this->obj3]));
     }
 
     public function testLoadValuesForChoicesDoesNotLoadIfEmptyChoices()
@@ -177,7 +177,7 @@ public function testLoadValuesForChoicesDoesNotLoadIfEmptyChoices()
         $this->repository->expects($this->never())
             ->method('findAll');
 
-        $this->assertSame(array(), $loader->loadValuesForChoices(array()));
+        $this->assertSame([], $loader->loadValuesForChoices([]));
     }
 
     public function testLoadValuesForChoicesDoesNotLoadIfSingleIntId()
@@ -200,7 +200,7 @@ public function testLoadValuesForChoicesDoesNotLoadIfSingleIntId()
             ->with($this->obj2)
             ->willReturn('2');
 
-        $this->assertSame(array('2'), $loader->loadValuesForChoices(array($this->obj2)));
+        $this->assertSame(['2'], $loader->loadValuesForChoices([$this->obj2]));
     }
 
     public function testLoadValuesForChoicesLoadsIfSingleIntIdAndValueGiven()
@@ -211,7 +211,7 @@ public function testLoadValuesForChoicesLoadsIfSingleIntIdAndValueGiven()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $value = function (\stdClass $object) { return $object->name; };
 
         $this->idReader->expects($this->any())
@@ -222,8 +222,8 @@ public function testLoadValuesForChoicesLoadsIfSingleIntIdAndValueGiven()
             ->method('findAll')
             ->willReturn($choices);
 
-        $this->assertSame(array('B'), $loader->loadValuesForChoices(
-            array($this->obj2),
+        $this->assertSame(['B'], $loader->loadValuesForChoices(
+            [$this->obj2],
             $value
         ));
     }
@@ -236,7 +236,7 @@ public function testLoadValuesForChoicesDoesNotLoadIfValueIsIdReader()
             $this->idReader
         );
 
-        $value = array($this->idReader, 'getIdValue');
+        $value = [$this->idReader, 'getIdValue'];
 
         $this->idReader->expects($this->any())
             ->method('isSingleId')
@@ -250,8 +250,8 @@ public function testLoadValuesForChoicesDoesNotLoadIfValueIsIdReader()
             ->with($this->obj2)
             ->willReturn('2');
 
-        $this->assertSame(array('2'), $loader->loadValuesForChoices(
-            array($this->obj2),
+        $this->assertSame(['2'], $loader->loadValuesForChoices(
+            [$this->obj2],
             $value
         ));
     }
@@ -264,17 +264,17 @@ public function testLoadChoicesForValues()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
 
         $this->repository->expects($this->once())
             ->method('findAll')
             ->willReturn($choices);
 
-        $this->assertSame(array($this->obj2, $this->obj3), $loader->loadChoicesForValues(array('1', '2')));
+        $this->assertSame([$this->obj2, $this->obj3], $loader->loadChoicesForValues(['1', '2']));
 
         // no further loads on subsequent calls
 
-        $this->assertSame(array($this->obj2, $this->obj3), $loader->loadChoicesForValues(array('1', '2')));
+        $this->assertSame([$this->obj2, $this->obj3], $loader->loadChoicesForValues(['1', '2']));
     }
 
     public function testLoadChoicesForValuesDoesNotLoadIfEmptyValues()
@@ -288,7 +288,7 @@ public function testLoadChoicesForValuesDoesNotLoadIfEmptyValues()
         $this->repository->expects($this->never())
             ->method('findAll');
 
-        $this->assertSame(array(), $loader->loadChoicesForValues(array()));
+        $this->assertSame([], $loader->loadChoicesForValues([]));
     }
 
     public function testLoadChoicesForValuesLoadsOnlyChoicesIfSingleIntId()
@@ -300,7 +300,7 @@ public function testLoadChoicesForValuesLoadsOnlyChoicesIfSingleIntId()
             $this->objectLoader
         );
 
-        $choices = array($this->obj2, $this->obj3);
+        $choices = [$this->obj2, $this->obj3];
 
         $this->idReader->expects($this->any())
             ->method('isSingleId')
@@ -315,19 +315,19 @@ public function testLoadChoicesForValuesLoadsOnlyChoicesIfSingleIntId()
 
         $this->objectLoader->expects($this->once())
             ->method('getEntitiesByIds')
-            ->with('idField', array(4 => '3', 7 => '2'))
+            ->with('idField', [4 => '3', 7 => '2'])
             ->willReturn($choices);
 
         $this->idReader->expects($this->any())
             ->method('getIdValue')
-            ->willReturnMap(array(
-                array($this->obj2, '2'),
-                array($this->obj3, '3'),
-            ));
+            ->willReturnMap([
+                [$this->obj2, '2'],
+                [$this->obj3, '3'],
+            ]);
 
         $this->assertSame(
-            array(4 => $this->obj3, 7 => $this->obj2),
-            $loader->loadChoicesForValues(array(4 => '3', 7 => '2')
+            [4 => $this->obj3, 7 => $this->obj2],
+            $loader->loadChoicesForValues([4 => '3', 7 => '2']
         ));
     }
 
@@ -339,7 +339,7 @@ public function testLoadChoicesForValuesLoadsAllIfSingleIntIdAndValueGiven()
             $this->idReader
         );
 
-        $choices = array($this->obj1, $this->obj2, $this->obj3);
+        $choices = [$this->obj1, $this->obj2, $this->obj3];
         $value = function (\stdClass $object) { return $object->name; };
 
         $this->idReader->expects($this->any())
@@ -350,8 +350,8 @@ public function testLoadChoicesForValuesLoadsAllIfSingleIntIdAndValueGiven()
             ->method('findAll')
             ->willReturn($choices);
 
-        $this->assertSame(array($this->obj2), $loader->loadChoicesForValues(
-            array('B'),
+        $this->assertSame([$this->obj2], $loader->loadChoicesForValues(
+            ['B'],
             $value
         ));
     }
@@ -365,8 +365,8 @@ public function testLoadChoicesForValuesLoadsOnlyChoicesIfValueIsIdReader()
             $this->objectLoader
         );
 
-        $choices = array($this->obj2, $this->obj3);
-        $value = array($this->idReader, 'getIdValue');
+        $choices = [$this->obj2, $this->obj3];
+        $value = [$this->idReader, 'getIdValue'];
 
         $this->idReader->expects($this->any())
             ->method('isSingleId')
@@ -381,16 +381,16 @@ public function testLoadChoicesForValuesLoadsOnlyChoicesIfValueIsIdReader()
 
         $this->objectLoader->expects($this->once())
             ->method('getEntitiesByIds')
-            ->with('idField', array('2'))
+            ->with('idField', ['2'])
             ->willReturn($choices);
 
         $this->idReader->expects($this->any())
             ->method('getIdValue')
-            ->willReturnMap(array(
-                array($this->obj2, '2'),
-                array($this->obj3, '3'),
-            ));
+            ->willReturnMap([
+                [$this->obj2, '2'],
+                [$this->obj3, '3'],
+            ]);
 
-        $this->assertSame(array($this->obj2), $loader->loadChoicesForValues(array('2'), $value));
+        $this->assertSame([$this->obj2], $loader->loadChoicesForValues(['2'], $value));
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
index 52ea54dfefbc..45653746458b 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
@@ -30,7 +30,7 @@ class MergeDoctrineCollectionListenerTest extends TestCase
 
     protected function setUp()
     {
-        $this->collection = new ArrayCollection(array('test'));
+        $this->collection = new ArrayCollection(['test']);
         $this->dispatcher = new EventDispatcher();
         $this->factory = $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock();
         $this->form = $this->getBuilder()
@@ -60,7 +60,7 @@ protected function getForm($name = 'name')
 
     public function testOnSubmitDoNothing()
     {
-        $submittedData = array('test');
+        $submittedData = ['test'];
         $event = new FormEvent($this->getForm(), $submittedData);
 
         $this->dispatcher->dispatch(FormEvents::SUBMIT, $event);
@@ -71,7 +71,7 @@ public function testOnSubmitDoNothing()
 
     public function testOnSubmitNullClearCollection()
     {
-        $submittedData = array();
+        $submittedData = [];
         $event = new FormEvent($this->getForm(), $submittedData);
 
         $this->dispatcher->dispatch(FormEvents::SUBMIT, $event);
diff --git a/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php b/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
index feb735e8ac74..d9ac83470af5 100644
--- a/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
+++ b/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
@@ -30,7 +30,7 @@ class ConsoleFormatter implements FormatterInterface
     const SIMPLE_FORMAT = "%datetime% %start_tag%%level_name%%end_tag% <comment>[%channel%]</> %message%%context%%extra%\n";
     const SIMPLE_DATE = 'H:i:s';
 
-    private static $levelColorMap = array(
+    private static $levelColorMap = [
         Logger::DEBUG => 'fg=white',
         Logger::INFO => 'fg=green',
         Logger::NOTICE => 'fg=blue',
@@ -39,7 +39,7 @@ class ConsoleFormatter implements FormatterInterface
         Logger::CRITICAL => 'fg=red',
         Logger::ALERT => 'fg=red',
         Logger::EMERGENCY => 'fg=white;bg=red',
-    );
+    ];
 
     private $options;
     private $cloner;
@@ -53,28 +53,28 @@ class ConsoleFormatter implements FormatterInterface
      *   * colors: If true, the log string contains ANSI code to add color;
      *   * multiline: If false, "context" and "extra" are dumped on one line.
      */
-    public function __construct(array $options = array())
+    public function __construct(array $options = [])
     {
-        $this->options = array_replace(array(
+        $this->options = array_replace([
             'format' => self::SIMPLE_FORMAT,
             'date_format' => self::SIMPLE_DATE,
             'colors' => true,
             'multiline' => false,
             'level_name_format' => '%-9s',
             'ignore_empty_context_and_extra' => true,
-        ), $options);
+        ], $options);
 
         if (class_exists(VarCloner::class)) {
             $this->cloner = new VarCloner();
-            $this->cloner->addCasters(array(
-                '*' => array($this, 'castObject'),
-            ));
+            $this->cloner->addCasters([
+                '*' => [$this, 'castObject'],
+            ]);
 
             $this->outputBuffer = fopen('php://memory', 'r+b');
             if ($this->options['multiline']) {
                 $output = $this->outputBuffer;
             } else {
-                $output = array($this, 'echoLine');
+                $output = [$this, 'echoLine'];
             }
 
             $this->dumper = new CliDumper($output, null, CliDumper::DUMP_LIGHT_ARRAY | CliDumper::DUMP_COMMA_SEPARATOR);
@@ -114,7 +114,7 @@ public function format(array $record)
             $extra = '';
         }
 
-        $formatted = strtr($this->options['format'], array(
+        $formatted = strtr($this->options['format'], [
             '%datetime%' => $record['datetime']->format($this->options['date_format']),
             '%start_tag%' => sprintf('<%s>', $levelColor),
             '%level_name%' => sprintf($this->options['level_name_format'], $record['level_name']),
@@ -123,7 +123,7 @@ public function format(array $record)
             '%message%' => $this->replacePlaceHolder($record)['message'],
             '%context%' => $context,
             '%extra%' => $extra,
-        ));
+        ]);
 
         return $formatted;
     }
@@ -149,7 +149,7 @@ public function castObject($v, array $a, Stub $s, $isNested)
 
         if ($isNested && !$v instanceof \DateTimeInterface) {
             $s->cut = -1;
-            $a = array();
+            $a = [];
         }
 
         return $a;
@@ -165,7 +165,7 @@ private function replacePlaceHolder(array $record)
 
         $context = $record['context'];
 
-        $replacements = array();
+        $replacements = [];
         foreach ($context as $k => $v) {
             // Remove quotes added by the dumper around string.
             $v = trim($this->dumpData($v, false), '"');
diff --git a/src/Symfony/Bridge/Monolog/Handler/ConsoleHandler.php b/src/Symfony/Bridge/Monolog/Handler/ConsoleHandler.php
index a23dc327c48f..997ecc107cce 100644
--- a/src/Symfony/Bridge/Monolog/Handler/ConsoleHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/ConsoleHandler.php
@@ -43,13 +43,13 @@
 class ConsoleHandler extends AbstractProcessingHandler implements EventSubscriberInterface
 {
     private $output;
-    private $verbosityLevelMap = array(
+    private $verbosityLevelMap = [
         OutputInterface::VERBOSITY_QUIET => Logger::ERROR,
         OutputInterface::VERBOSITY_NORMAL => Logger::WARNING,
         OutputInterface::VERBOSITY_VERBOSE => Logger::NOTICE,
         OutputInterface::VERBOSITY_VERY_VERBOSE => Logger::INFO,
         OutputInterface::VERBOSITY_DEBUG => Logger::DEBUG,
-    );
+    ];
 
     /**
      * @param OutputInterface|null $output            The console output to use (the handler remains disabled when passing null
@@ -58,7 +58,7 @@ class ConsoleHandler extends AbstractProcessingHandler implements EventSubscribe
      * @param array                $verbosityLevelMap Array that maps the OutputInterface verbosity to a minimum logging
      *                                                level (leave empty to use the default mapping)
      */
-    public function __construct(OutputInterface $output = null, bool $bubble = true, array $verbosityLevelMap = array())
+    public function __construct(OutputInterface $output = null, bool $bubble = true, array $verbosityLevelMap = [])
     {
         parent::__construct(Logger::DEBUG, $bubble);
         $this->output = $output;
@@ -131,10 +131,10 @@ public function onTerminate(ConsoleTerminateEvent $event)
      */
     public static function getSubscribedEvents()
     {
-        return array(
-            ConsoleEvents::COMMAND => array('onCommand', 255),
-            ConsoleEvents::TERMINATE => array('onTerminate', -255),
-        );
+        return [
+            ConsoleEvents::COMMAND => ['onCommand', 255],
+            ConsoleEvents::TERMINATE => ['onTerminate', -255],
+        ];
     }
 
     /**
@@ -158,10 +158,10 @@ protected function getDefaultFormatter()
             return new ConsoleFormatter();
         }
 
-        return new ConsoleFormatter(array(
+        return new ConsoleFormatter([
             'colors' => $this->output->isDecorated(),
             'multiline' => OutputInterface::VERBOSITY_DEBUG <= $this->output->getVerbosity(),
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php b/src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php
index 4c454f17707a..22c035731dc5 100644
--- a/src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php
@@ -24,7 +24,7 @@ class ServerLogHandler extends AbstractHandler
     private $context;
     private $socket;
 
-    public function __construct(string $host, int $level = Logger::DEBUG, bool $bubble = true, array $context = array())
+    public function __construct(string $host, int $level = Logger::DEBUG, bool $bubble = true, array $context = [])
     {
         parent::__construct($level, $bubble);
 
@@ -108,7 +108,7 @@ private function formatRecord(array $record)
 
         $recordFormatted = $this->getFormatter()->format($record);
 
-        foreach (array('log_uuid', 'uuid', 'uid') as $key) {
+        foreach (['log_uuid', 'uuid', 'uid'] as $key) {
             if (isset($record['extra'][$key])) {
                 $recordFormatted['log_id'] = $record['extra'][$key];
                 break;
diff --git a/src/Symfony/Bridge/Monolog/Logger.php b/src/Symfony/Bridge/Monolog/Logger.php
index cb8ec23b5dc4..eb7b7dbb85f1 100644
--- a/src/Symfony/Bridge/Monolog/Logger.php
+++ b/src/Symfony/Bridge/Monolog/Logger.php
@@ -28,7 +28,7 @@ class Logger extends BaseLogger implements DebugLoggerInterface
     public function getLogs(/* Request $request = null */)
     {
         if ($logger = $this->getDebugLogger()) {
-            return \call_user_func_array(array($logger, 'getLogs'), \func_get_args());
+            return \call_user_func_array([$logger, 'getLogs'], \func_get_args());
         }
 
         return [];
@@ -40,7 +40,7 @@ public function getLogs(/* Request $request = null */)
     public function countErrors(/* Request $request = null */)
     {
         if ($logger = $this->getDebugLogger()) {
-            return \call_user_func_array(array($logger, 'countErrors'), \func_get_args());
+            return \call_user_func_array([$logger, 'countErrors'], \func_get_args());
         }
 
         return 0;
diff --git a/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php b/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
index 6875a89f6a90..3a6690cbcf6d 100644
--- a/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
+++ b/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
@@ -18,8 +18,8 @@
 
 class DebugProcessor implements DebugLoggerInterface
 {
-    private $records = array();
-    private $errorCount = array();
+    private $records = [];
+    private $errorCount = [];
     private $requestStack;
 
     public function __construct(RequestStack $requestStack = null)
@@ -31,14 +31,14 @@ public function __invoke(array $record)
     {
         $hash = $this->requestStack && ($request = $this->requestStack->getCurrentRequest()) ? spl_object_hash($request) : '';
 
-        $this->records[$hash][] = array(
+        $this->records[$hash][] = [
             'timestamp' => $record['datetime']->getTimestamp(),
             'message' => $record['message'],
             'priority' => $record['level'],
             'priorityName' => $record['level_name'],
             'context' => $record['context'],
             'channel' => isset($record['channel']) ? $record['channel'] : '',
-        );
+        ];
 
         if (!isset($this->errorCount[$hash])) {
             $this->errorCount[$hash] = 0;
@@ -61,11 +61,11 @@ public function __invoke(array $record)
     public function getLogs(/* Request $request = null */)
     {
         if (1 <= \func_num_args() && null !== $request = \func_get_arg(0)) {
-            return $this->records[spl_object_hash($request)] ?? array();
+            return $this->records[spl_object_hash($request)] ?? [];
         }
 
         if (0 === \count($this->records)) {
-            return array();
+            return [];
         }
 
         return array_merge(...array_values($this->records));
@@ -88,7 +88,7 @@ public function countErrors(/* Request $request = null */)
      */
     public function clear()
     {
-        $this->records = array();
-        $this->errorCount = array();
+        $this->records = [];
+        $this->errorCount = [];
     }
 }
diff --git a/src/Symfony/Bridge/Monolog/Processor/WebProcessor.php b/src/Symfony/Bridge/Monolog/Processor/WebProcessor.php
index c8e21f13d53f..8bf8cec3dfeb 100644
--- a/src/Symfony/Bridge/Monolog/Processor/WebProcessor.php
+++ b/src/Symfony/Bridge/Monolog/Processor/WebProcessor.php
@@ -39,8 +39,8 @@ public function onKernelRequest(GetResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array('onKernelRequest', 4096),
-        );
+        return [
+            KernelEvents::REQUEST => ['onKernelRequest', 4096],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Monolog/Tests/Handler/FingersCrossed/HttpCodeActivationStrategyTest.php b/src/Symfony/Bridge/Monolog/Tests/Handler/FingersCrossed/HttpCodeActivationStrategyTest.php
index 9f0b0b3735e4..0fce18d3861b 100644
--- a/src/Symfony/Bridge/Monolog/Tests/Handler/FingersCrossed/HttpCodeActivationStrategyTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/Handler/FingersCrossed/HttpCodeActivationStrategyTest.php
@@ -25,7 +25,7 @@ class HttpCodeActivationStrategyTest extends TestCase
      */
     public function testExclusionsWithoutCode()
     {
-        new HttpCodeActivationStrategy(new RequestStack(), array(array('urls' => array())), Logger::WARNING);
+        new HttpCodeActivationStrategy(new RequestStack(), [['urls' => []]], Logger::WARNING);
     }
 
     /**
@@ -33,7 +33,7 @@ public function testExclusionsWithoutCode()
      */
     public function testExclusionsWithoutUrls()
     {
-        new HttpCodeActivationStrategy(new RequestStack(), array(array('code' => 404)), Logger::WARNING);
+        new HttpCodeActivationStrategy(new RequestStack(), [['code' => 404]], Logger::WARNING);
     }
 
     /**
@@ -46,12 +46,12 @@ public function testIsActivated($url, $record, $expected)
 
         $strategy = new HttpCodeActivationStrategy(
             $requestStack,
-            array(
-                array('code' => 403, 'urls' => array()),
-                array('code' => 404, 'urls' => array()),
-                array('code' => 405, 'urls' => array()),
-                array('code' => 400, 'urls' => array('^/400/a', '^/400/b')),
-            ),
+            [
+                ['code' => 403, 'urls' => []],
+                ['code' => 404, 'urls' => []],
+                ['code' => 405, 'urls' => []],
+                ['code' => 400, 'urls' => ['^/400/a', '^/400/b']],
+            ],
             Logger::WARNING
         );
 
@@ -60,22 +60,22 @@ public function testIsActivated($url, $record, $expected)
 
     public function isActivatedProvider()
     {
-        return array(
-            array('/test',  array('level' => Logger::ERROR), true),
-            array('/400',   array('level' => Logger::ERROR, 'context' => $this->getContextException(400)), true),
-            array('/400/a', array('level' => Logger::ERROR, 'context' => $this->getContextException(400)), false),
-            array('/400/b', array('level' => Logger::ERROR, 'context' => $this->getContextException(400)), false),
-            array('/400/c', array('level' => Logger::ERROR, 'context' => $this->getContextException(400)), true),
-            array('/401',   array('level' => Logger::ERROR, 'context' => $this->getContextException(401)), true),
-            array('/403',   array('level' => Logger::ERROR, 'context' => $this->getContextException(403)), false),
-            array('/404',   array('level' => Logger::ERROR, 'context' => $this->getContextException(404)), false),
-            array('/405',   array('level' => Logger::ERROR, 'context' => $this->getContextException(405)), false),
-            array('/500',   array('level' => Logger::ERROR, 'context' => $this->getContextException(500)), true),
-        );
+        return [
+            ['/test',  ['level' => Logger::ERROR], true],
+            ['/400',   ['level' => Logger::ERROR, 'context' => $this->getContextException(400)], true],
+            ['/400/a', ['level' => Logger::ERROR, 'context' => $this->getContextException(400)], false],
+            ['/400/b', ['level' => Logger::ERROR, 'context' => $this->getContextException(400)], false],
+            ['/400/c', ['level' => Logger::ERROR, 'context' => $this->getContextException(400)], true],
+            ['/401',   ['level' => Logger::ERROR, 'context' => $this->getContextException(401)], true],
+            ['/403',   ['level' => Logger::ERROR, 'context' => $this->getContextException(403)], false],
+            ['/404',   ['level' => Logger::ERROR, 'context' => $this->getContextException(404)], false],
+            ['/405',   ['level' => Logger::ERROR, 'context' => $this->getContextException(405)], false],
+            ['/500',   ['level' => Logger::ERROR, 'context' => $this->getContextException(500)], true],
+        ];
     }
 
     protected function getContextException($code)
     {
-        return array('exception' => new HttpException($code));
+        return ['exception' => new HttpException($code)];
     }
 }
diff --git a/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php b/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
index 193cde6728ec..ba0e90709165 100644
--- a/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
@@ -22,16 +22,16 @@ class LoggerTest extends TestCase
     public function testGetLogsWithoutDebugProcessor()
     {
         $handler = new TestHandler();
-        $logger = new Logger(__METHOD__, array($handler));
+        $logger = new Logger(__METHOD__, [$handler]);
 
         $this->assertTrue($logger->error('error message'));
-        $this->assertSame(array(), $logger->getLogs());
+        $this->assertSame([], $logger->getLogs());
     }
 
     public function testCountErrorsWithoutDebugProcessor()
     {
         $handler = new TestHandler();
-        $logger = new Logger(__METHOD__, array($handler));
+        $logger = new Logger(__METHOD__, [$handler]);
 
         $this->assertTrue($logger->error('error message'));
         $this->assertSame(0, $logger->countErrors());
@@ -41,7 +41,7 @@ public function testGetLogsWithDebugProcessor()
     {
         $handler = new TestHandler();
         $processor = new DebugProcessor();
-        $logger = new Logger(__METHOD__, array($handler), array($processor));
+        $logger = new Logger(__METHOD__, [$handler], [$processor]);
 
         $this->assertTrue($logger->error('error message'));
         $this->assertCount(1, $logger->getLogs());
@@ -51,7 +51,7 @@ public function testCountErrorsWithDebugProcessor()
     {
         $handler = new TestHandler();
         $processor = new DebugProcessor();
-        $logger = new Logger(__METHOD__, array($handler), array($processor));
+        $logger = new Logger(__METHOD__, [$handler], [$processor]);
 
         $this->assertTrue($logger->debug('test message'));
         $this->assertTrue($logger->info('test message'));
@@ -69,7 +69,7 @@ public function testCountErrorsWithDebugProcessor()
     public function testGetLogsWithDebugProcessor2()
     {
         $handler = new TestHandler();
-        $logger = new Logger('test', array($handler));
+        $logger = new Logger('test', [$handler]);
         $logger->pushProcessor(new DebugProcessor());
 
         $logger->addInfo('test');
@@ -88,7 +88,7 @@ public function testGetLogsWithDebugProcessor3()
         $processor->expects($this->once())->method('countErrors')->with($request);
 
         $handler = new TestHandler();
-        $logger = new Logger('test', array($handler));
+        $logger = new Logger('test', [$handler]);
         $logger->pushProcessor($processor);
 
         $logger->getLogs($request);
@@ -98,7 +98,7 @@ public function testGetLogsWithDebugProcessor3()
     public function testClear()
     {
         $handler = new TestHandler();
-        $logger = new Logger('test', array($handler));
+        $logger = new Logger('test', [$handler]);
         $logger->pushProcessor(new DebugProcessor());
 
         $logger->addInfo('test');
diff --git a/src/Symfony/Bridge/Monolog/Tests/Processor/DebugProcessorTest.php b/src/Symfony/Bridge/Monolog/Tests/Processor/DebugProcessorTest.php
index 2338bc28c8fe..be2bc5df2db3 100644
--- a/src/Symfony/Bridge/Monolog/Tests/Processor/DebugProcessorTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/Processor/DebugProcessorTest.php
@@ -65,14 +65,14 @@ public function testWithRequestStack()
 
     private function getRecord($level = Logger::WARNING, $message = 'test')
     {
-        return array(
+        return [
             'message' => $message,
-            'context' => array(),
+            'context' => [],
             'level' => $level,
             'level_name' => Logger::getLevelName($level),
             'channel' => 'test',
             'datetime' => new \DateTime(),
-            'extra' => array(),
-        );
+            'extra' => [],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Monolog/Tests/Processor/WebProcessorTest.php b/src/Symfony/Bridge/Monolog/Tests/Processor/WebProcessorTest.php
index c18f857285c9..6b61b5c986fc 100644
--- a/src/Symfony/Bridge/Monolog/Tests/Processor/WebProcessorTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/Processor/WebProcessorTest.php
@@ -36,8 +36,8 @@ public function testUsesRequestServerData()
 
     public function testUseRequestClientIp()
     {
-        Request::setTrustedProxies(array('192.168.0.1'), Request::HEADER_X_FORWARDED_ALL);
-        list($event, $server) = $this->createRequestEvent(array('X_FORWARDED_FOR' => '192.168.0.2'));
+        Request::setTrustedProxies(['192.168.0.1'], Request::HEADER_X_FORWARDED_ALL);
+        list($event, $server) = $this->createRequestEvent(['X_FORWARDED_FOR' => '192.168.0.2']);
 
         $processor = new WebProcessor();
         $processor->onKernelRequest($event);
@@ -50,7 +50,7 @@ public function testUseRequestClientIp()
         $this->assertEquals($server['SERVER_NAME'], $record['extra']['server']);
         $this->assertEquals($server['HTTP_REFERER'], $record['extra']['referrer']);
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     public function testCanBeConstructedWithExtraFields()
@@ -61,7 +61,7 @@ public function testCanBeConstructedWithExtraFields()
 
         list($event, $server) = $this->createRequestEvent();
 
-        $processor = new WebProcessor(array('url', 'referrer'));
+        $processor = new WebProcessor(['url', 'referrer']);
         $processor->onKernelRequest($event);
         $record = $processor($this->getRecord());
 
@@ -70,16 +70,16 @@ public function testCanBeConstructedWithExtraFields()
         $this->assertEquals($server['HTTP_REFERER'], $record['extra']['referrer']);
     }
 
-    private function createRequestEvent($additionalServerParameters = array()): array
+    private function createRequestEvent($additionalServerParameters = []): array
     {
         $server = array_merge(
-            array(
+            [
                 'REQUEST_URI' => 'A',
                 'REMOTE_ADDR' => '192.168.0.1',
                 'REQUEST_METHOD' => 'C',
                 'SERVER_NAME' => 'D',
                 'HTTP_REFERER' => 'E',
-            ),
+            ],
             $additionalServerParameters
         );
 
@@ -97,20 +97,20 @@ private function createRequestEvent($additionalServerParameters = array()): arra
             ->method('getRequest')
             ->will($this->returnValue($request));
 
-        return array($event, $server);
+        return [$event, $server];
     }
 
     private function getRecord(int $level = Logger::WARNING, string $message = 'test'): array
     {
-        return array(
+        return [
             'message' => $message,
-            'context' => array(),
+            'context' => [],
             'level' => $level,
             'level_name' => Logger::getLevelName($level),
             'channel' => 'test',
             'datetime' => new \DateTime(),
-            'extra' => array(),
-        );
+            'extra' => [],
+        ];
     }
 
     private function isExtraFieldsSupported()
diff --git a/src/Symfony/Bridge/Twig/Command/DebugCommand.php b/src/Symfony/Bridge/Twig/Command/DebugCommand.php
index 6f4018240536..34ccefdd13ea 100644
--- a/src/Symfony/Bridge/Twig/Command/DebugCommand.php
+++ b/src/Symfony/Bridge/Twig/Command/DebugCommand.php
@@ -43,10 +43,10 @@ public function __construct(Environment $twig, string $projectDir = null)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('filter', InputArgument::OPTIONAL, 'Show details for all entries matching this filter'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (text or json)', 'text'),
-            ))
+            ])
             ->setDescription('Shows a list of twig functions, filters, globals and tests')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command outputs a list of twig functions,
@@ -71,10 +71,10 @@ protected function configure()
     protected function execute(InputInterface $input, OutputInterface $output)
     {
         $io = new SymfonyStyle($input, $output);
-        $types = array('functions', 'filters', 'tests', 'globals');
+        $types = ['functions', 'filters', 'tests', 'globals'];
 
         if ('json' === $input->getOption('format')) {
-            $data = array();
+            $data = [];
             foreach ($types as $type) {
                 foreach ($this->twig->{'get'.ucfirst($type)}() as $name => $entity) {
                     $data[$type][$name] = $this->getMetadata($type, $entity);
@@ -90,7 +90,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $filter = $input->getArgument('filter');
 
         foreach ($types as $index => $type) {
-            $items = array();
+            $items = [];
             foreach ($this->twig->{'get'.ucfirst($type)}() as $name => $entity) {
                 if (!$filter || false !== strpos($name, $filter)) {
                     $items[$name] = $name.$this->getPrettyMetadata($type, $entity);
@@ -107,20 +107,20 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $io->listing($items);
         }
 
-        $rows = array();
+        $rows = [];
         $firstNamespace = true;
         $prevHasSeparator = false;
         foreach ($this->getLoaderPaths() as $namespace => $paths) {
             if (!$firstNamespace && !$prevHasSeparator && \count($paths) > 1) {
-                $rows[] = array('', '');
+                $rows[] = ['', ''];
             }
             $firstNamespace = false;
             foreach ($paths as $path) {
-                $rows[] = array($namespace, $path.\DIRECTORY_SEPARATOR);
+                $rows[] = [$namespace, $path.\DIRECTORY_SEPARATOR];
                 $namespace = '';
             }
             if (\count($paths) > 1) {
-                $rows[] = array('', '');
+                $rows[] = ['', ''];
                 $prevHasSeparator = true;
             } else {
                 $prevHasSeparator = false;
@@ -130,7 +130,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             array_pop($rows);
         }
         $io->section('Loader Paths');
-        $io->table(array('Namespace', 'Paths'), $rows);
+        $io->table(['Namespace', 'Paths'], $rows);
 
         return 0;
     }
@@ -138,10 +138,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
     private function getLoaderPaths()
     {
         if (!($loader = $this->twig->getLoader()) instanceof FilesystemLoader) {
-            return array();
+            return [];
         }
 
-        $loaderPaths = array();
+        $loaderPaths = [];
         foreach ($loader->getNamespaces() as $namespace) {
             $paths = array_map(function ($path) {
                 if (null !== $this->projectDir && 0 === strpos($path, $this->projectDir)) {
diff --git a/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php b/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
index 9e214fc73101..c9611e376165 100644
--- a/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
+++ b/src/Symfony/Bridge/Twig/DataCollector/TwigDataCollector.php
@@ -51,7 +51,7 @@ public function reset()
     {
         $this->profile->reset();
         $this->computed = null;
-        $this->data = array();
+        $this->data = [];
     }
 
     /**
@@ -60,7 +60,7 @@ public function reset()
     public function lateCollect()
     {
         $this->data['profile'] = serialize($this->profile);
-        $this->data['template_paths'] = array();
+        $this->data['template_paths'] = [];
 
         if (null === $this->twig) {
             return;
@@ -122,15 +122,15 @@ public function getHtmlCallGraph()
         $dump = $dumper->dump($this->getProfile());
 
         // needed to remove the hardcoded CSS styles
-        $dump = str_replace(array(
+        $dump = str_replace([
             '<span style="background-color: #ffd">',
             '<span style="color: #d44">',
             '<span style="background-color: #dfd">',
-        ), array(
+        ], [
             '<span class="status-warning">',
             '<span class="status-error">',
             '<span class="status-success">',
-        ), $dump);
+        ], $dump);
 
         return new Markup($dump, 'UTF-8');
     }
@@ -138,7 +138,7 @@ public function getHtmlCallGraph()
     public function getProfile()
     {
         if (null === $this->profile) {
-            $this->profile = unserialize($this->data['profile'], array('allowed_classes' => array('Twig_Profiler_Profile', 'Twig\Profiler\Profile')));
+            $this->profile = unserialize($this->data['profile'], ['allowed_classes' => ['Twig_Profiler_Profile', 'Twig\Profiler\Profile']]);
         }
 
         return $this->profile;
@@ -155,13 +155,13 @@ private function getComputedData($index)
 
     private function computeData(Profile $profile)
     {
-        $data = array(
+        $data = [
             'template_count' => 0,
             'block_count' => 0,
             'macro_count' => 0,
-        );
+        ];
 
-        $templates = array();
+        $templates = [];
         foreach ($profile as $p) {
             $d = $this->computeData($p);
 
diff --git a/src/Symfony/Bridge/Twig/Extension/CsrfExtension.php b/src/Symfony/Bridge/Twig/Extension/CsrfExtension.php
index 2f061acfd3ae..934fe91d7cb5 100644
--- a/src/Symfony/Bridge/Twig/Extension/CsrfExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/CsrfExtension.php
@@ -25,8 +25,8 @@ class CsrfExtension extends AbstractExtension
      */
     public function getFunctions(): array
     {
-        return array(
-            new TwigFunction('csrf_token', array(CsrfRuntime::class, 'getCsrfToken')),
-        );
+        return [
+            new TwigFunction('csrf_token', [CsrfRuntime::class, 'getCsrfToken']),
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Extension/FormExtension.php b/src/Symfony/Bridge/Twig/Extension/FormExtension.php
index 54f3b70bf1ba..f7429ad3bbb4 100644
--- a/src/Symfony/Bridge/Twig/Extension/FormExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/FormExtension.php
@@ -32,10 +32,10 @@ class FormExtension extends AbstractExtension
      */
     public function getTokenParsers()
     {
-        return array(
+        return [
             // {% form_theme form "SomeBundle::widgets.twig" %}
             new FormThemeTokenParser(),
-        );
+        ];
     }
 
     /**
@@ -43,18 +43,18 @@ public function getTokenParsers()
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('form_widget', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_errors', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_label', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_help', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_row', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_rest', null, array('node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form', null, array('node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_start', null, array('node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('form_end', null, array('node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => array('html'))),
-            new TwigFunction('csrf_token', array('Symfony\Component\Form\FormRenderer', 'renderCsrfToken')),
-        );
+        return [
+            new TwigFunction('form_widget', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_errors', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_label', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_help', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_row', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_rest', null,
10000
 ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form', null, ['node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_start', null, ['node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('form_end', null, ['node_class' => 'Symfony\Bridge\Twig\Node\RenderBlockNode', 'is_safe' => ['html']]),
+            new TwigFunction('csrf_token', ['Symfony\Component\Form\FormRenderer', 'renderCsrfToken']),
+        ];
     }
 
     /**
@@ -62,10 +62,10 @@ public function getFunctions()
      */
     public function getFilters()
     {
-        return array(
-            new TwigFilter('humanize', array('Symfony\Component\Form\FormRenderer', 'humanize')),
-            new TwigFilter('form_encode_currency', array('Symfony\Component\Form\FormRenderer', 'encodeCurrency'), array('is_safe' => array('html'), 'needs_environment' => true)),
-        );
+        return [
+            new TwigFilter('humanize', ['Symfony\Component\Form\FormRenderer', 'humanize']),
+            new TwigFilter('form_encode_currency', ['Symfony\Component\Form\FormRenderer', 'encodeCurrency'], ['is_safe' => ['html'], 'needs_environment' => true]),
+        ];
     }
 
     /**
@@ -73,10 +73,10 @@ public function getFilters()
      */
     public function getTests()
     {
-        return array(
+        return [
             new TwigTest('selectedchoice', 'Symfony\Bridge\Twig\Extension\twig_is_selected_choice'),
             new TwigTest('rootform', 'Symfony\Bridge\Twig\Extension\twig_is_root_form'),
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/WorkflowExtension.php b/src/Symfony/Bridge/Twig/Extension/WorkflowExtension.php
index cd63e84ea448..05c236a1648d 100644
--- a/src/Symfony/Bridge/Twig/Extension/WorkflowExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/WorkflowExtension.php
@@ -32,13 +32,13 @@ public function __construct(Registry $workflowRegistry)
 
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('workflow_can', array($this, 'canTransition')),
-            new TwigFunction('workflow_transitions', array($this, 'getEnabledTransitions')),
-            new TwigFunction('workflow_has_marked_place', array($this, 'hasMarkedPlace')),
-            new TwigFunction('workflow_marked_places', array($this, 'getMarkedPlaces')),
-            new TwigFunction('workflow_metadata', array($this, 'getMetadata')),
-        );
+        return [
+            new TwigFunction('workflow_can', [$this, 'canTransition']),
+            new TwigFunction('workflow_transitions', [$this, 'getEnabledTransitions']),
+            new TwigFunction('workflow_has_marked_place', [$this, 'hasMarkedPlace']),
+            new TwigFunction('workflow_marked_places', [$this, 'getMarkedPlaces']),
+            new TwigFunction('workflow_metadata', [$this, 'getMetadata']),
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php b/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
index bf97e52ad346..8dc8998a747d 100644
--- a/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
+++ b/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
@@ -40,7 +40,7 @@ public function __construct(array $defaultThemes, Environment $environment)
     /**
      * {@inheritdoc}
      */
-    public function renderBlock(FormView $view, $resource, $blockName, array $variables = array())
+    public function renderBlock(FormView $view, $resource, $blockName, array $variables = [])
     {
         $cacheKey = $view->vars[self::CACHE_KEY_VAR];
 
@@ -169,7 +169,7 @@ protected function loadResourcesFromTheme($cacheKey, &$theme)
         // theme is a reference and we don't want to change it.
         $currentTheme = $theme;
 
-        $context = $this->environment->mergeGlobals(array());
+        $context = $this->environment->mergeGlobals([]);
 
         // The do loop takes care of template inheritance.
         // Add blocks from all templates in the inheritance tree, but avoid
diff --git a/src/Symfony/Bridge/Twig/Node/FormThemeNode.php b/src/Symfony/Bridge/Twig/Node/FormThemeNode.php
index b898ec58bf26..c99675cab316 100644
--- a/src/Symfony/Bridge/Twig/Node/FormThemeNode.php
+++ b/src/Symfony/Bridge/Twig/Node/FormThemeNode.php
@@ -22,7 +22,7 @@ class FormThemeNode extends Node
 {
     public function __construct(Node $form, Node $resources, int $lineno, string $tag = null, bool $only = false)
     {
-        parent::__construct(array('form' => $form, 'resources' => $resources), array('only' => $only), $lineno, $tag);
+        parent::__construct(['form' => $form, 'resources' => $resources], ['only' => $only], $lineno, $tag);
     }
 
     public function compile(Compiler $compiler)
diff --git a/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php b/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
index 535a12f3576f..82b71eed870c 100644
--- a/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
@@ -28,7 +28,7 @@ public function testLintCorrectFile()
         $tester = $this->createCommandTester();
         $filename = $this->createFile('{{ foo }}');
 
-        $ret = $tester->execute(array('filename' => array($filename)), array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename]], ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('OK in', trim($tester->getDisplay()));
@@ -39,7 +39,7 @@ public function testLintIncorrectFile()
         $tester = $this->createCommandTester();
         $filename = $this->createFile('{{ foo');
 
-        $ret = $tester->execute(array('filename' => array($filename)), array('decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename]], ['decorated' => false]);
 
         $this->assertEquals(1, $ret, 'Returns 1 in case of error');
         $this->assertRegExp('/ERROR  in \S+ \(line /', trim($tester->getDisplay()));
@@ -54,7 +54,7 @@ public function testLintFileNotReadable()
         $filename = $this->createFile('');
         unlink($filename);
 
-        $ret = $tester->execute(array('filename' => array($filename)), array('decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename]], ['decorated' => false]);
     }
 
     public function testLintFileCompileTimeException()
@@ -62,7 +62,7 @@ public function testLintFileCompileTimeException()
         $tester = $this->createCommandTester();
         $filename = $this->createFile("{{ 2|number_format(2, decimal_point='.', ',') }}");
 
-        $ret = $tester->execute(array('filename' => array($filename)), array('decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename]], ['decorated' => false]);
 
         $this->assertEquals(1, $ret, 'Returns 1 in case of error');
         $this->assertRegExp('/ERROR  in \S+ \(line /', trim($tester->getDisplay()));
@@ -97,7 +97,7 @@ private function createFile($content)
 
     protected function setUp()
     {
-        $this->files = array();
+        $this->files = [];
     }
 
     protected function tearDown()
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
index 93f0dca0a925..65da95fe8e13 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
@@ -105,9 +105,9 @@ public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly
 
     public function testHelp()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-        ));
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4HorizontalLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4HorizontalLayoutTest.php
index d84a4431cdbf..e9416b02213f 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4HorizontalLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4HorizontalLayoutTest.php
@@ -219,7 +219,7 @@ public function testCheckboxRowWithHelp()
     {
         $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\CheckboxType');
         $view = $form->createView();
-        $html = $this->renderRow($view, array('label' => 'foo', 'help' => 'really helpful text'));
+        $html = $this->renderRow($view, ['label' => 'foo', 'help' => 'really helpful text']);
 
         $this->assertMatchesXpath($html,
 '/div
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
index 5710a2d486c0..8732376c27ee 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
@@ -58,7 +58,7 @@ public function testLabelOnForm()
     {
         $form = $this->factory->createNamed('name', DateType::class);
         $view = $form->createView();
-        $this->renderWidget($view, array('label' => 'foo'));
+        $this->renderWidget($view, ['label' => 'foo']);
         $html = $this->renderLabel($view);
 
         $this->assertMatchesXpath($html,
@@ -72,11 +72,11 @@ public function testLabelOnForm()
     public function testLabelDoesNotRenderFieldAttributes()
     {
         $form = $this->factory->createNamed('name', TextType::class);
-        $html = $this->renderLabel($form->createView(), null, array(
-            'attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -89,11 +89,11 @@ public function testLabelDoesNotRenderFieldAttributes()
     public function testLabelWithCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', TextType::class);
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -106,11 +106,11 @@ public function testLabelWithCustomAttributesPassedDirectly()
     public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
     {
         $form = $this->factory->createNamed('name', TextType::class);
-        $html = $this->renderLabel($form->createView(), 'Custom label', array(
-            'label_attr' => array(
+        $html = $this->renderLabel($form->createView(), 'Custom label', [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -123,14 +123,14 @@ public function testLabelWithCustomTextAndCustomAttributesPassedDirectly()
 
     public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly()
     {
-        $form = $this->factory->createNamed('name', TextType::class, null, array(
+        $form = $this->factory->createNamed('name', TextType::class, null, [
             'label' => 'Custom label',
-        ));
-        $html = $this->renderLabel($form->createView(), null, array(
-            'label_attr' => array(
+        ]);
+        $html = $this->renderLabel($form->createView(), null, [
+            'label_attr' => [
                 'class' => 'my&class',
-            ),
-        ));
+            ],
+        ]);
 
         $this->assertMatchesXpath($html,
 '/label
@@ -143,11 +143,11 @@ public function testLabelWithCustomTextAsOptionAndCustomAttributesPassedDirectly
 
     public function testLegendOnExpandedType()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, null, array(
+        $form = $this->factory->createNamed('name', ChoiceType::class, null, [
             'label' => 'Custom label',
             'expanded' => true,
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-        ));
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+        ]);
         $view = $form->createView();
         $this->renderWidget($view);
         $html = $this->renderLabel($view);
@@ -162,9 +162,9 @@ public function testLegendOnExpandedType()
 
     public function testHelp()
     {
-        $form = $this->factory->createNamed('name', TextType::class, null, array(
+        $form = $this->factory->createNamed('name', TextType::class, null, [
             'help' => 'Help text test!',
-        ));
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
@@ -204,7 +204,7 @@ public function testErrors()
 
     public function testErrorWithNoLabel()
     {
-        $form = $this->factory->createNamed('name', TextType::class, array('label' => false));
+        $form = $this->factory->createNamed('name', TextType::class, ['label' => false]);
         $form->addError(new FormError('[trans]Error 1[/trans]'));
         $view = $form->createView();
         $html = $this->renderLabel($view);
@@ -216,7 +216,7 @@ public function testCheckedCheckbox()
     {
         $form = $this->factory->createNamed('name', CheckboxType::class, true);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -231,14 +231,14 @@ public function testCheckedCheckbox()
 
     public function testSingleChoiceAttributesWithMainAttributes()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => false,
-            'attr' => array('class' => 'bar&baz'),
-        ));
+            'attr' => ['class' => 'bar&baz'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'bar&baz')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'bar&baz']],
 '/select
     [@name="name"]
     [@class="bar&baz form-control"]
@@ -254,14 +254,14 @@ public function testSingleChoiceAttributesWithMainAttributes()
 
     public function testSingleExpandedChoiceAttributesWithMainAttributes()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
-            'attr' => array('class' => 'bar&baz'),
-        ));
+            'attr' => ['class' => 'bar&baz'],
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('attr' => array('class' => 'bar&baz')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'bar&baz']],
 '/div
     [@class="bar&baz"]
     [
@@ -289,7 +289,7 @@ public function testUncheckedCheckbox()
     {
         $form = $this->factory->createNamed('name', CheckboxType::class, false);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -303,11 +303,11 @@ public function testUncheckedCheckbox()
 
     public function testCheckboxWithValue()
     {
-        $form = $this->factory->createNamed('name', CheckboxType::class, false, array(
+        $form = $this->factory->createNamed('name', CheckboxType::class, false, [
             'value' => 'foo&bar',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -321,13 +321,13 @@ public function testCheckboxWithValue()
 
     public function testSingleChoiceExpanded()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -352,14 +352,14 @@ public function testSingleChoiceExpanded()
 
     public function testSingleChoiceExpandedWithLabelsAsFalse()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => false,
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -382,8 +382,8 @@ public function testSingleChoiceExpandedWithLabelsAsFalse()
 
     public function testSingleChoiceExpandedWithLabelsSetByCallable()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'choice_label' => function ($choice, $label, $value) {
                 if ('&b' === $choice) {
                     return false;
@@ -393,9 +393,9 @@ public function testSingleChoiceExpandedWithLabelsSetByCallable()
             },
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -426,16 +426,16 @@ public function testSingleChoiceExpandedWithLabelsSetByCallable()
 
     public function testSingleChoiceExpandedWithLabelsSetFalseByCallable()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => function () {
                 return false;
             },
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -458,14 +458,14 @@ public function testSingleChoiceExpandedWithLabelsSetFalseByCallable()
 
     public function testSingleChoiceExpandedWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -490,14 +490,14 @@ public function testSingleChoiceExpandedWithoutTranslation()
 
     public function testSingleChoiceExpandedAttributes()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -522,15 +522,15 @@ public function testSingleChoiceExpandedAttributes()
 
     public function testSingleChoiceExpandedWithPlaceholder()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'placeholder' => 'Test&Me',
             'required' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -562,16 +562,16 @@ public function testSingleChoiceExpandedWithPlaceholder()
 
     public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, '&a', [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'multiple' => false,
             'expanded' => true,
             'required' => false,
             'choice_translation_domain' => false,
             'placeholder' => 'Placeholder&Not&Translated',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -603,13 +603,13 @@ public function testSingleChoiceExpandedWithPlaceholderWithoutTranslation()
 
     public function testSingleChoiceExpandedWithBooleanValue()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, true, array(
-            'choices' => array('Choice&A' => '1', 'Choice&B' => '0'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, true, [
+            'choices' => ['Choice&A' => '1', 'Choice&B' => '0'],
             'multiple' => false,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -634,14 +634,14 @@ public function testSingleChoiceExpandedWithBooleanValue()
 
     public function testMultipleChoiceExpanded()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -673,14 +673,14 @@ public function testMultipleChoiceExpanded()
 
     public function testMultipleChoiceExpandedWithLabelsAsFalse()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => false,
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -703,8 +703,8 @@ public function testMultipleChoiceExpandedWithLabelsAsFalse()
 
     public function testMultipleChoiceExpandedWithLabelsSetByCallable()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'choice_label' => function ($choice, $label, $value) {
                 if ('&b' === $choice) {
                     return false;
@@ -714,9 +714,9 @@ public function testMultipleChoiceExpandedWithLabelsSetByCallable()
             },
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
             '/div
     [
         ./div
@@ -747,16 +747,16 @@ public function testMultipleChoiceExpandedWithLabelsSetByCallable()
 
     public function testMultipleChoiceExpandedWithLabelsSetFalseByCallable()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b'],
             'choice_label' => function () {
                 return false;
             },
             'multiple' => true,
             'expanded' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -779,15 +779,15 @@ public function testMultipleChoiceExpandedWithLabelsSetFalseByCallable()
 
     public function testMultipleChoiceExpandedWithoutTranslation()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
             'choice_translation_domain' => false,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -819,15 +819,15 @@ public function testMultipleChoiceExpandedWithoutTranslation()
 
     public function testMultipleChoiceExpandedAttributes()
     {
-        $form = $this->factory->createNamed('name', ChoiceType::class, array('&a', '&c'), array(
-            'choices' => array('Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'),
-            'choice_attr' => array('Choice&B' => array('class' => 'foo&bar')),
+        $form = $this->factory->createNamed('name', ChoiceType::class, ['&a', '&c'], [
+            'choices' => ['Choice&A' => '&a', 'Choice&B' => '&b', 'Choice&C' => '&c'],
+            'choice_attr' => ['Choice&B' => ['class' => 'foo&bar']],
             'multiple' => true,
             'expanded' => true,
             'required' => true,
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array(),
+        $this->assertWidgetMatchesXpath($form->createView(), [],
 '/div
     [
         ./div
@@ -861,7 +861,7 @@ public function testCheckedRadio()
     {
         $form = $this->factory->createNamed('name', RadioType::class, true);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -883,7 +883,7 @@ public function testUncheckedRadio()
     {
         $form = $this->factory->createNamed('name', RadioType::class, false);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -902,11 +902,11 @@ public function testUncheckedRadio()
 
     public function testRadioWithValue()
     {
-        $form = $this->factory->createNamed('name', RadioType::class, false, array(
+        $form = $this->factory->createNamed('name', RadioType::class, false, [
             'value' => 'foo&bar',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
 '/div
     [@class="form-check"]
     [
@@ -926,9 +926,9 @@ public function testRadioWithValue()
 
     public function testButtonAttributeNameRepeatedIfTrue()
     {
-        $form = $this->factory->createNamed('button', ButtonType::class, null, array(
-            'attr' => array('foo' => true),
-        ));
+        $form = $this->factory->createNamed('button', ButtonType::class, null, [
+            'attr' => ['foo' => true],
+        ]);
 
         $html = $this->renderWidget($form->createView());
 
@@ -940,7 +940,7 @@ public function testFile()
     {
         $form = $this->factory->createNamed('name', FileType::class);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'n/a', 'attr' => array('class' => 'my&class form-control-file')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'n/a', 'attr' => ['class' => 'my&class form-control-file']],
 '/div
     [@class="custom-file"]
     [
@@ -958,7 +958,7 @@ public function testFileWithPlaceholder()
     {
         $form = $this->factory->createNamed('name', FileType::class);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'n/a', 'attr' => array('class' => 'my&class form-control-file', 'placeholder' => 'Custom Placeholder')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'n/a', 'attr' => ['class' => 'my&class form-control-file', 'placeholder' => 'Custom Placeholder']],
 '/div
     [@class="custom-file"]
     [
@@ -974,11 +974,11 @@ public function testFileWithPlaceholder()
 
     public function testMoney()
     {
-        $form = $this->factory->createNamed('name', MoneyType::class, 1234.56, array(
+        $form = $this->factory->createNamed('name', MoneyType::class, 1234.56, [
             'currency' => 'EUR',
-        ));
+        ]);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
             '/div
     [@class="input-group"]
     [
@@ -1004,7 +1004,7 @@ public function testPercent()
     {
         $form = $this->factory->createNamed('name', PercentType::class, 0.1);
 
-        $this->assertWidgetMatchesXpath($form->createView(), array('id' => 'my&id', 'attr' => array('class' => 'my&class')),
+        $this->assertWidgetMatchesXpath($form->createView(), ['id' => 'my&id', 'attr' => ['class' => 'my&class']],
             '/div
     [@class="input-group"]
     [
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/WorkflowExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/WorkflowExtensionTest.php
index aa0c2d49e5d3..a3e3ca2daec6 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/WorkflowExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/WorkflowExtensionTest.php
@@ -32,19 +32,19 @@ protected function setUp()
             $this->markTestSkipped('The Workflow component is needed to run tests for this extension.');
         }
 
-        $places = array('ordered', 'waiting_for_payment', 'processed');
-        $transitions = array(
+        $places = ['ordered', 'waiting_for_payment', 'processed'];
+        $transitions = [
             $this->t1 = new Transition('t1', 'ordered', 'waiting_for_payment'),
             new Transition('t2', 'waiting_for_payment', 'processed'),
-        );
+        ];
 
         $metadataStore = null;
         if (class_exists(InMemoryMetadataStore::class)) {
             $transitionsMetadata = new \SplObjectStorage();
-            $transitionsMetadata->attach($this->t1, array('title' => 't1 title'));
+            $transitionsMetadata->attach($this->t1, ['title' => 't1 title']);
             $metadataStore = new InMemoryMetadataStore(
-                array('title' => 'workflow title'),
-                array('orderer' => array('title' => 'ordered title')),
+                ['title' => 'workflow title'],
+                ['orderer' => ['title' => 'ordered title']],
                 $transitionsMetadata
             );
         }
@@ -63,7 +63,7 @@ protected function setUp()
     public function testCanTransition()
     {
         $subject = new \stdClass();
-        $subject->marking = array();
+        $subject->marking = [];
 
         $this->assertTrue($this->extension->canTransition($subject, 't1'));
         $this->assertFalse($this->extension->canTransition($subject, 't2'));
@@ -72,7 +72,7 @@ public function testCanTransition()
     public function testGetEnabledTransitions()
     {
         $subject = new \stdClass();
-        $subject->marking = array();
+        $subject->marking = [];
 
         $transitions = $this->extension->getEnabledTransitions($subject);
 
@@ -84,8 +84,8 @@ public function testGetEnabledTransitions()
     public function testHasMarkedPlace()
     {
         $subject = new \stdClass();
-        $subject->marking = array();
-        $subject->marking = array('ordered' => 1, 'waiting_for_payment' => 1);
+        $subject->marking = [];
+        $subject->marking = ['ordered' => 1, 'waiting_for_payment' => 1];
 
         $this->assertTrue($this->extension->hasMarkedPlace($subject, 'ordered'));
         $this->assertTrue($this->extension->hasMarkedPlace($subject, 'waiting_for_payment'));
@@ -95,10 +95,10 @@ public function testHasMarkedPlace()
     public function testGetMarkedPlaces()
     {
         $subject = new \stdClass();
-        $subject->marking = array();
-        $subject->marking = array('ordered' => 1, 'waiting_for_payment' => 1);
+        $subject->marking = [];
+        $subject->marking = ['ordered' => 1, 'waiting_for_payment' => 1];
 
-        $this->assertSame(array('ordered', 'waiting_for_payment'), $this->extension->getMarkedPlaces($subject));
+        $this->assertSame(['ordered', 'waiting_for_payment'], $this->extension->getMarkedPlaces($subject));
         $this->assertSame($subject->marking, $this->extension->getMarkedPlaces($subject, false));
     }
 
@@ -108,7 +108,7 @@ public function testGetMetadata()
             $this->markTestSkipped('This test requires symfony/workflow:4.1.');
         }
         $subject = new \stdClass();
-        $subject->marking = array();
+        $subject->marking = [];
 
         $this->assertSame('workflow title', $this->extension->getMetadata($subject, 'title'));
         $this->assertSame('ordered title', $this->extension->getMetadata($subject, 'title', 'orderer'));
diff --git a/src/Symfony/Bundle/DebugBundle/Command/ServerDumpPlaceholderCommand.php b/src/Symfony/Bundle/DebugBundle/Command/ServerDumpPlaceholderCommand.php
index d41b16afad2c..ae69edfff759 100644
--- a/src/Symfony/Bundle/DebugBundle/Command/ServerDumpPlaceholderCommand.php
+++ b/src/Symfony/Bundle/DebugBundle/Command/ServerDumpPlaceholderCommand.php
@@ -29,7 +29,7 @@ class ServerDumpPlaceholderCommand extends Command
 {
     private $replacedCommand;
 
-    public function __construct(DumpServer $server = null, array $descriptors = array())
+    public function __construct(DumpServer $server = null, array $descriptors = [])
     {
         $this->replacedCommand = new ServerDumpCommand((new \ReflectionClass(DumpServer::class))->newInstanceWithoutConstructor(), $descriptors);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
index 1b3b35e47741..24aa8171ca5e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
@@ -53,10 +53,10 @@ public function __construct(CacheClearerInterface $cacheClearer, Filesystem $fil
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputOption('no-warmup', '', InputOption::VALUE_NONE, 'Do not warm up the cache'),
                 new InputOption('no-optional-warmers', '', InputOption::VALUE_NONE, 'Skip optional cache warmers (faster)'),
-            ))
+            ])
             ->setDescription('Clears the cache')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command clears the application cache for a given environment
@@ -137,7 +137,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             if ('/' === \DIRECTORY_SEPARATOR && $mounts = @file('/proc/mounts')) {
                 foreach ($mounts as $mount) {
                     $mount = \array_slice(explode(' ', $mount), 1, -3);
-                    if (!\in_array(array_pop($mount), array('vboxsf', 'nfs'))) {
+                    if (!\in_array(array_pop($mount), ['vboxsf', 'nfs'])) {
                         continue;
                     }
                     $mount = implode(' ', $mount).'/';
@@ -195,7 +195,7 @@ private function warmup(string $warmupDir, string $realCacheDir, bool $enableOpt
         }
 
         // fix references to cached files with the real cache directory name
-        $search = array($warmupDir, str_replace('\\', '\\\\', $warmupDir));
+        $search = [$warmupDir, str_replace('\\', '\\\\', $warmupDir)];
         $replace = str_replace('\\', '/', $realCacheDir);
         foreach (Finder::create()->files()->in($warmupDir) as $file) {
             $content = str_replace($search, $replace, file_get_contents($file), $count);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolDeleteCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolDeleteCommand.php
index 91ca64acfe8d..656f9a9de302 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolDeleteCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolDeleteCommand.php
@@ -42,10 +42,10 @@ public function __construct(Psr6CacheClearer $poolClearer)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('pool', InputArgument::REQUIRED, 'The cache pool from which to delete an item'),
                 new InputArgument('key', InputArgument::REQUIRED, 'The cache key to delete from the pool'),
-            ))
+            ])
             ->setDescription('Deletes an item from a cache pool')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> deletes an item from a given cache pool.
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
index d25ffaf9b157..44da8e994cb5 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
@@ -47,7 +47,7 @@ class ContainerDebugCommand extends Command
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::OPTIONAL, 'A service name (foo)'),
                 new InputOption('show-private', null, InputOption::VALUE_NONE, 'Used to show public *and* private services (deprecated)'),
                 new InputOption('show-arguments', null, InputOption::VALUE_NONE, 'Used to show arguments in services'),
@@ -59,7 +59,7 @@ protected function configure()
                 new InputOption('types', null, InputOption::VALUE_NONE, 'Displays types (classes/interfaces) available in the container'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
                 new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw description'),
-            ))
+            ])
             ->setDescription('Displays current services for an application')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays all configured <comment>public</comment> services:
@@ -116,26 +116,26 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $object = $this->getContainerBuilder();
 
         if ($input->getOption('types')) {
-            $options = array();
-            $options['filter'] = array($this, 'filterToServiceTypes');
+            $options = [];
+            $options['filter'] = [$this, 'filterToServiceTypes'];
         } elseif ($input->getOption('parameters')) {
-            $parameters = array();
+            $parameters = [];
             foreach ($object->getParameterBag()->all() as $k => $v) {
                 $parameters[$k] = $object->resolveEnvPlaceholders($v);
             }
             $object = new ParameterBag($parameters);
-            $options = array();
+            $options = [];
         } elseif ($parameter = $input->getOption('parameter')) {
-            $options = array('parameter' => $parameter);
+            $options = ['parameter' => $parameter];
         } elseif ($input->getOption('tags')) {
-            $options = array('group_by' => 'tags');
+            $options = ['group_by' => 'tags'];
         } elseif ($tag = $input->getOption('tag')) {
-            $options = array('tag' => $tag);
+            $options = ['tag' => $tag];
         } elseif ($name = $input->getArgument('name')) {
             $name = $this->findProperServiceName($input, $errorIo, $object, $name, $input->getOption('show-hidden'));
-            $options = array('id' => $name);
+            $options = ['id' => $name];
         } else {
-            $options = array();
+            $options = [];
         }
 
         $helper = new DescriptorHelper();
@@ -164,7 +164,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
      */
     protected function validateInput(InputInterface $input)
     {
-        $options = array('tags', 'tag', 'parameters', 'parameter');
+        $options = ['tags', 'tag', 'parameters', 'parameter'];
 
         $optionsCount = 0;
         foreach ($options as $option) {
@@ -199,7 +199,7 @@ protected function getContainerBuilder()
         if (!$kernel->isDebug() || !(new ConfigCache($kernel->getContainer()->getParameter('debug.container.dump'), true))->isFresh()) {
             $buildContainer = \Closure::bind(function () { return $this->buildContainer(); }, $kernel, \get_class($kernel));
             $container = $buildContainer();
-            $container->getCompilerPassConfig()->setRemovingPasses(array());
+            $container->getCompilerPassConfig()->setRemovingPasses([]);
             $container->compile();
         } else {
             (new XmlFileLoader($container = new ContainerBuilder(), new FileLocator()))->load($kernel->getContainer()->getParameter('debug.container.dump'));
@@ -227,7 +227,7 @@ private function findProperServiceName(InputInterface $input, SymfonyStyle $io,
     private function findServiceIdsContaining(ContainerBuilder $builder, string $name, bool $showHidden)
     {
         $serviceIds = $builder->getServiceIds();
-        $foundServiceIds = array();
+        $foundServiceIds = [];
         foreach ($serviceIds as $serviceId) {
             if (!$showHidden && 0 === strpos($serviceId, '.')) {
                 continue;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
index 7ef48c78b106..3fbf9b9c9625 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
@@ -33,9 +33,9 @@ class DebugAutowiringCommand extends ContainerDebugCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('search', InputArgument::OPTIONAL, 'A search filter'),
-            ))
+            ])
             ->setDescription('Lists classes/interfaces you can use for autowiring')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays all classes and interfaces that
@@ -62,7 +62,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $builder = $this->getContainerBuilder();
         $serviceIds = $builder->getServiceIds();
-        $serviceIds = array_filter($serviceIds, array($this, 'filterToServiceTypes'));
+        $serviceIds = array_filter($serviceIds, [$this, 'filterToServiceTypes']);
 
         if ($search = $input->getArgument('search')) {
             $serviceIds = array_filter($serviceIds, function ($serviceId) use ($search) {
@@ -84,18 +84,18 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $io->text(sprintf('(only showing classes/interfaces matching <comment>%s</comment>)', $search));
         }
         $io->newLine();
-        $tableRows = array();
-        $hasAlias = array();
+        $tableRows = [];
+        $hasAlias = [];
         foreach ($serviceIds as $serviceId) {
             if ($builder->hasAlias($serviceId)) {
-                $tableRows[] = array(sprintf('<fg=cyan>%s</fg=cyan>', $serviceId));
-                $tableRows[] = array(sprintf('    alias to %s', $builder->getAlias($serviceId)));
+                $tableRows[] = [sprintf('<fg=cyan>%s</fg=cyan>', $serviceId)];
+                $tableRows[] = [sprintf('    alias to %s', $builder->getAlias($serviceId))];
                 $hasAlias[(string) $builder->getAlias($serviceId)] = true;
             } else {
-                $tableRows[$serviceId] = array(sprintf('<fg=cyan>%s</fg=cyan>', $serviceId));
+                $tableRows[$serviceId] = [sprintf('<fg=cyan>%s</fg=cyan>', $serviceId)];
             }
         }
 
-        $io->table(array(), array_diff_key($tableRows, $hasAlias));
+        $io->table([], array_diff_key($tableRows, $hasAlias));
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
index 7d651ed2f346..ec8d53b06ca8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
@@ -48,12 +48,12 @@ public function __construct(RouterInterface $router)
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::OPTIONAL, 'A route name'),
                 new InputOption('show-controllers', null, InputOption::VALUE_NONE, 'Show assigned controllers in overview'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
                 new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw route(s)'),
-            ))
+            ])
             ->setDescription('Displays current routes for an application')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> displays the configured routes:
@@ -88,25 +88,25 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 throw new InvalidArgumentException(sprintf('The route "%s" does not exist.', $name));
             }
 
-            $helper->describe($io, $route, array(
+            $helper->describe($io, $route, [
                 'format' => $input->getOption('format'),
                 'raw_text' => $input->getOption('raw'),
                 'name' => $name,
                 'output' => $io,
-            ));
+            ]);
         } else {
-            $helper->describe($io, $routes, array(
+            $helper->describe($io, $routes, [
                 'format' => $input->getOption('format'),
                 'raw_text' => $input->getOption('raw'),
                 'show_controllers' => $input->getOption('show-controllers'),
                 'output' => $io,
-            ));
+            ]);
         }
     }
 
     private function findRouteNameContaining(string $name, RouteCollection $routes): array
     {
-        $foundRoutesNames = array();
+        $foundRoutesNames = [];
         foreach ($routes as $routeName => $route) {
             if (false !== stripos($routeName, $name)) {
                 $foundRoutesNames[] = $routeName;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/WorkflowDumpCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/WorkflowDumpCommand.php
index 52eb8391c196..ff91dc781837 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/WorkflowDumpCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/WorkflowDumpCommand.php
@@ -37,12 +37,12 @@ class WorkflowDumpCommand extends Command
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::REQUIRED, 'A workflow name'),
                 new InputArgument('marking', InputArgument::IS_ARRAY, 'A marking (a list of places)'),
                 new InputOption('label', 'l', InputOption::VALUE_REQUIRED, 'Labels a graph'),
                 new InputOption('dump-format', null, InputOption::VALUE_REQUIRED, 'The dump format [dot|puml]', 'dot'),
-            ))
+            ])
             ->setDescription('Dump a workflow')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command dumps the graphical representation of a
@@ -89,13 +89,13 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $marking->mark($place);
         }
 
-        $options = array(
+        $options = [
             'name' => $serviceId,
             'nofooter' => true,
-            'graph' => array(
+            'graph' => [
                 'label' => $input->getOption('label'),
-            ),
-        );
+            ],
+        ];
         $output->writeln($dumper->dump($workflow->getDefinition(), $marking, $options));
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Application.php b/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
index bb420ba2287b..acfb90c3d075 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
@@ -32,7 +32,7 @@ class Application extends BaseApplication
 {
     private $kernel;
     private $commandsRegistered = false;
-    private $registrationErrors = array();
+    private $registrationErrors = [];
 
     public function __construct(KernelInterface $kernel)
     {
@@ -83,7 +83,7 @@ protected function doRunCommand(Command $command, InputInterface $input, OutputI
         if (!$command instanceof ListCommand) {
             if ($this->registrationErrors) {
                 $this->renderRegistrationErrors($input, $output);
-                $this->registrationErrors = array();
+                $this->registrationErrors = [];
             }
 
             return parent::doRunCommand($command, $input, $output);
@@ -93,7 +93,7 @@ protected function doRunCommand(Command $command, InputInterface $input, OutputI
 
         if ($this->registrationErrors) {
             $this->renderRegistrationErrors($input, $output);
-            $this->registrationErrors = array();
+            $this->registrationErrors = [];
         }
 
         return $returnCode;
@@ -179,7 +179,7 @@ protected function registerCommands()
         }
 
         if ($container->hasParameter('console.command.ids')) {
-            $lazyCommandIds = $container->hasParameter('console.lazy_command.ids') ? $container->getParameter('console.lazy_command.ids') : array();
+            $lazyCommandIds = $container->hasParameter('console.lazy_command.ids') ? $container->getParameter('console.lazy_command.ids') : [];
             foreach ($container->getParameter('console.command.ids') as $id) {
                 if (!isset($lazyCommandIds[$id])) {
                     try {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
index 5e8762318a02..ecff91d616c0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/JsonDescriptor.php
@@ -32,9 +32,9 @@ class JsonDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeRouteCollection(RouteCollection $routes, array $options = array())
+    protected function describeRouteCollection(RouteCollection $routes, array $options = [])
     {
-        $data = array();
+        $data = [];
         foreach ($routes->all() as $name => $route) {
             $data[$name] = $this->getRouteData($route);
         }
@@ -45,7 +45,7 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeRoute(Route $route, array $options = array())
+    protected function describeRoute(Route $route, array $options = [])
     {
         $this->writeData($this->getRouteData($route), $options);
     }
@@ -53,7 +53,7 @@ protected function describeRoute(Route $route, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameters(ParameterBag $parameters, array $options = array())
+    protected function describeContainerParameters(ParameterBag $parameters, array $options = [])
     {
         $this->writeData($this->sortParameters($parameters), $options);
     }
@@ -61,13 +61,13 @@ protected function describeContainerParameters(ParameterBag $parameters, array $
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerTags(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerTags(ContainerBuilder $builder, array $options = [])
     {
         $showHidden = isset($options['show_hidden']) && $options['show_hidden'];
-        $data = array();
+        $data = [];
 
         foreach ($this->findDefinitionsByTag($builder, $showHidden) as $tag => $definitions) {
-            $data[$tag] = array();
+            $data[$tag] = [];
             foreach ($definitions as $definition) {
                 $data[$tag][] = $this->getContainerDefinitionData($definition, true);
             }
@@ -79,7 +79,7 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null)
     {
         if (!isset($options['id'])) {
             throw new \InvalidArgumentException('An "id" option must be provided.');
@@ -97,13 +97,13 @@ protected function describeContainerService($service, array $options = array(),
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerServices(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerServices(ContainerBuilder $builder, array $options = [])
     {
         $serviceIds = isset($options['tag']) && $options['tag'] ? array_keys($builder->findTaggedServiceIds($options['tag'])) : $builder->getServiceIds();
         $showHidden = isset($options['show_hidden']) && $options['show_hidden'];
         $omitTags = isset($options['omit_tags']) && $options['omit_tags'];
         $showArguments = isset($options['show_arguments']) && $options['show_arguments'];
-        $data = array('definitions' => array(), 'aliases' => array(), 'services' => array());
+        $data = ['definitions' => [], 'aliases' => [], 'services' => []];
 
         if (isset($options['filter'])) {
             $serviceIds = array_filter($serviceIds, $options['filter']);
@@ -131,7 +131,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerDefinition(Definition $definition, array $options = array())
+    protected function describeContainerDefinition(Definition $definition, array $options = [])
     {
         $this->writeData($this->getContainerDefinitionData($definition, isset($options['omit_tags']) && $options['omit_tags'], isset($options['show_arguments']) && $options['show_arguments']), $options);
     }
@@ -139,22 +139,22 @@ protected function describeContainerDefinition(Definition $definition, array $op
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null)
     {
         if (!$builder) {
             return $this->writeData($this->getContainerAliasData($alias), $options);
         }
 
         $this->writeData(
-            array($this->getContainerAliasData($alias), $this->getContainerDefinitionData($builder->getDefinition((string) $alias), isset($options['omit_tags']) && $options['omit_tags'], isset($options['show_arguments']) && $options['show_arguments'])),
-            array_merge($options, array('id' => (string) $alias))
+            [$this->getContainerAliasData($alias), $this->getContainerDefinitionData($builder->getDefinition((string) $alias), isset($options['omit_tags']) && $options['omit_tags'], isset($options['show_arguments']) && $options['show_arguments'])],
+            array_merge($options, ['id' => (string) $alias])
         );
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array())
+    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = [])
     {
         $this->writeData($this->getEventDispatcherListenersData($eventDispatcher, array_key_exists('event', $options) ? $options['event'] : null), $options);
     }
@@ -162,7 +162,7 @@ protected function describeEventDispatcherListeners(EventDispatcherInterface $ev
     /**
      * {@inheritdoc}
      */
-    protected function describeCallable($callable, array $options = array())
+    protected function describeCallable($callable, array $options = [])
     {
         $this->writeData($this->getCallableData($callable, $options), $options);
     }
@@ -170,11 +170,11 @@ protected function describeCallable($callable, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameter($parameter, array $options = array())
+    protected function describeContainerParameter($parameter, array $options = [])
     {
         $key = isset($options['parameter']) ? $options['parameter'] : '';
 
-        $this->writeData(array($key => $parameter), $options);
+        $this->writeData([$key => $parameter], $options);
     }
 
     /**
@@ -193,7 +193,7 @@ private function writeData(array $data, array $options)
      */
     protected function getRouteData(Route $route)
     {
-        return array(
+        return [
             'path' => $route->getPath(),
             'pathRegex' => $route->compile()->getRegex(),
             'host' => '' !== $route->getHost() ? $route->getHost() : 'ANY',
@@ -204,12 +204,12 @@ protected function getRouteData(Route $route)
             'defaults' => $route->getDefaults(),
             'requirements' => $route->getRequirements() ?: 'NO CUSTOM',
             'options' => $route->getOptions(),
-        );
+        ];
     }
 
     private function getContainerDefinitionData(Definition $definition, bool $omitTags = false, bool $showArguments = false): array
     {
-        $data = array(
+        $data = [
             'class' => (string) $definition->getClass(),
             'public' => $definition->isPublic() && !$definition->isPrivate(),
             'synthetic' => $definition->isSynthetic(),
@@ -218,7 +218,7 @@ private function getContainerDefinitionData(Definition $definition, bool $omitTa
             'abstract' => $definition->isAbstract(),
             'autowire' => $definition->isAutowired(),
             'autoconfigure' => $definition->isAutoconfigured(),
-        );
+        ];
 
         if ($showArguments) {
             $data['arguments'] = $this->describeValue($definition->getArguments(), $omitTags, $showArguments);
@@ -243,17 +243,17 @@ private function getContainerDefinitionData(Definition $definition, bool $omitTa
 
         $calls = $definition->getMethodCalls();
         if (\count($calls) > 0) {
-            $data['calls'] = array();
+            $data['calls'] = [];
             foreach ($calls as $callData) {
                 $data['calls'][] = $callData[0];
             }
         }
 
         if (!$omitTags) {
-            $data['tags'] = array();
+            $data['tags'] = [];
             foreach ($definition->getTags() as $tagName => $tagData) {
                 foreach ($tagData as $parameters) {
-                    $data['tags'][] = array('name' => $tagName, 'parameters' => $parameters);
+                    $data['tags'][] = ['name' => $tagName, 'parameters' => $parameters];
                 }
             }
         }
@@ -263,15 +263,15 @@ private function getContainerDefinitionData(Definition $definition, bool $omitTa
 
     private function getContainerAliasData(Alias $alias): array
     {
-        return array(
+        return [
             'service' => (string) $alias,
             'public' => $alias->isPublic() && !$alias->isPrivate(),
-        );
+        ];
     }
 
     private function getEventDispatcherListenersData(EventDispatcherInterface $eventDispatcher, string $event = null): array
     {
-        $data = array();
+        $data = [];
 
         $registeredListeners = $eventDispatcher->getListeners($event);
         if (null !== $event) {
@@ -295,9 +295,9 @@ private function getEventDispatcherListenersData(EventDispatcherInterface $event
         return $data;
     }
 
-    private function getCallableData($callable, array $options = array()): array
+    private function getCallableData($callable, array $options = []): array
     {
-        $data = ar
D7AE
ray();
+        $data = [];
 
         if (\is_array($callable)) {
             $data['type'] = 'function';
@@ -369,7 +369,7 @@ private function getCallableData($callable, array $options = array()): array
     private function describeValue($value, $omitTags, $showArguments)
     {
         if (\is_array($value)) {
-            $data = array();
+            $data = [];
             foreach ($value as $k => $v) {
                 $data[$k] = $this->describeValue($v, $omitTags, $showArguments);
             }
@@ -382,10 +382,10 @@ private function describeValue($value, $omitTags, $showArguments)
         }
 
         if ($value instanceof Reference) {
-            return array(
+            return [
                 'type' => 'service',
                 'id' => (string) $value,
-            );
+            ];
         }
 
         if ($value instanceof ArgumentInterface) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
index 341c497ffc93..79791350db0d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
@@ -35,24 +35,24 @@ class TextDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeRouteCollection(RouteCollection $routes, array $options = array())
+    protected function describeRouteCollection(RouteCollection $routes, array $options = [])
     {
         $showControllers = isset($options['show_controllers']) && $options['show_controllers'];
 
-        $tableHeaders = array('Name', 'Method', 'Scheme', 'Host', 'Path');
+        $tableHeaders = ['Name', 'Method', 'Scheme', 'Host', 'Path'];
         if ($showControllers) {
             $tableHeaders[] = 'Controller';
         }
 
-        $tableRows = array();
+        $tableRows = [];
         foreach ($routes->all() as $name => $route) {
-            $row = array(
+            $row = [
                 $name,
                 $route->getMethods() ? implode('|', $route->getMethods()) : 'ANY',
                 $route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY',
                 '' !== $route->getHost() ? $route->getHost() : 'ANY',
                 $route->getPath(),
-            );
+            ];
 
             if ($showControllers) {
                 $controller = $route->getDefault('_controller');
@@ -74,22 +74,22 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeRoute(Route $route, array $options = array())
+    protected function describeRoute(Route $route, array $options = [])
     {
-        $tableHeaders = array('Property', 'Value');
-        $tableRows = array(
-            array('Route Name', isset($options['name']) ? $options['name'] : ''),
-            array('Path', $route->getPath()),
-            array('Path Regex', $route->compile()->getRegex()),
-            array('Host', ('' !== $route->getHost() ? $route->getHost() : 'ANY')),
-            array('Host Regex', ('' !== $route->getHost() ? $route->compile()->getHostRegex() : '')),
-            array('Scheme', ($route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY')),
-            array('Method', ($route->getMethods() ? implode('|', $route->getMethods()) : 'ANY')),
-            array('Requirements', ($route->getRequirements() ? $this->formatRouterConfig($route->getRequirements()) : 'NO CUSTOM')),
-            array('Class', \get_class($route)),
-            array('Defaults', $this->formatRouterConfig($route->getDefaults())),
-            array('Options', $this->formatRouterConfig($route->getOptions())),
-        );
+        $tableHeaders = ['Property', 'Value'];
+        $tableRows = [
+            ['Route Name', isset($options['name']) ? $options['name'] : ''],
+            ['Path', $route->getPath()],
+            ['Path Regex', $route->compile()->getRegex()],
+            ['Host', ('' !== $route->getHost() ? $route->getHost() : 'ANY')],
+            ['Host Regex', ('' !== $route->getHost() ? $route->compile()->getHostRegex() : '')],
+            ['Scheme', ($route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY')],
+            ['Method', ($route->getMethods() ? implode('|', $route->getMethods()) : 'ANY')],
+            ['Requirements', ($route->getRequirements() ? $this->formatRouterConfig($route->getRequirements()) : 'NO CUSTOM')],
+            ['Class', \get_class($route)],
+            ['Defaults', $this->formatRouterConfig($route->getDefaults())],
+            ['Options', $this->formatRouterConfig($route->getOptions())],
+        ];
 
         $table = new Table($this->getOutput());
         $table->setHeaders($tableHeaders)->setRows($tableRows);
@@ -99,13 +99,13 @@ protected function describeRoute(Route $route, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameters(ParameterBag $parameters, array $options = array())
+    protected function describeContainerParameters(ParameterBag $parameters, array $options = [])
     {
-        $tableHeaders = array('Parameter', 'Value');
+        $tableHeaders = ['Parameter', 'Value'];
 
-        $tableRows = array();
+        $tableRows = [];
         foreach ($this->sortParameters($parameters) as $parameter => $value) {
-            $tableRows[] = array($parameter, $this->formatParameter($value));
+            $tableRows[] = [$parameter, $this->formatParameter($value)];
         }
 
         $options['output']->title('Symfony Container Parameters');
@@ -115,7 +115,7 @@ protected function describeContainerParameters(ParameterBag $parameters, array $
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerTags(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerTags(ContainerBuilder $builder, array $options = [])
     {
         $showHidden = isset($options['show_hidden']) && $options['show_hidden'];
 
@@ -134,7 +134,7 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null)
     {
         if (!isset($options['id'])) {
             throw new \InvalidArgumentException('An "id" option must be provided.');
@@ -147,10 +147,10 @@ protected function describeContainerService($service, array $options = array(),
         } else {
             $options['output']->title(sprintf('Information for Service "<info>%s</info>"', $options['id']));
             $options['output']->table(
-                array('Service ID', 'Class'),
-                array(
-                    array(isset($options['id']) ? $options['id'] : '-', \get_class($service)),
-                )
+                ['Service ID', 'Class'],
+                [
+                    [isset($options['id']) ? $options['id'] : '-', \get_class($service)],
+                ]
             );
         }
     }
@@ -158,7 +158,7 @@ protected function describeContainerService($service, array $options = array(),
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerServices(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerServices(ContainerBuilder $builder, array $options = [])
     {
         $showHidden = isset($options['show_hidden']) && $options['show_hidden'];
         $showTag = isset($options['tag']) ? $options['tag'] : null;
@@ -176,7 +176,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
         $options['output']->title($title);
 
         $serviceIds = isset($options['tag']) && $options['tag'] ? array_keys($builder->findTaggedServiceIds($options['tag'])) : $builder->getServiceIds();
-        $maxTags = array();
+        $maxTags = [];
 
         if (isset($options['filter'])) {
             $serviceIds = array_filter($serviceIds, $options['filter']);
@@ -211,8 +211,8 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
         $tagsCount = \count($maxTags);
         $tagsNames = array_keys($maxTags);
 
-        $tableHeaders = array_merge(array('Service ID'), $tagsNames, array('Class name'));
-        $tableRows = array();
+        $tableHeaders = array_merge(['Service ID'], $tagsNames, ['Class name']);
+        $tableRows = [];
         $rawOutput = isset($options['raw_text']) && $options['raw_text'];
         foreach ($this->sortServiceIds($serviceIds) as $serviceId) {
             $definition = $this->resolveServiceDefinition($builder, $serviceId);
@@ -221,24 +221,24 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
             if ($definition instanceof Definition) {
                 if ($showTag) {
                     foreach ($definition->getTag($showTag) as $key => $tag) {
-                        $tagValues = array();
+                        $tagValues = [];
                         foreach ($tagsNames as $tagName) {
                             $tagValues[] = isset($tag[$tagName]) ? $tag[$tagName] : '';
                         }
                         if (0 === $key) {
-                            $tableRows[] = array_merge(array($serviceId), $tagValues, array($definition->getClass()));
+                            $tableRows[] = array_merge([$serviceId], $tagValues, [$definition->getClass()]);
                         } else {
-                            $tableRows[] = array_merge(array('  "'), $tagValues, array(''));
+                            $tableRows[] = array_merge(['  "'], $tagValues, ['']);
                         }
                     }
                 } else {
-                    $tableRows[] = array($styledServiceId, $definition->getClass());
+                    $tableRows[] = [$styledServiceId, $definition->getClass()];
                 }
             } elseif ($definition instanceof Alias) {
                 $alias = $definition;
-                $tableRows[] = array_merge(array($styledServiceId, sprintf('alias for "%s"', $alias)), $tagsCount ? array_fill(0, $tagsCount, '') : array());
+                $tableRows[] = array_merge([$styledServiceId, sprintf('alias for "%s"', $alias)], $tagsCount ? array_fill(0, $tagsCount, '') : []);
             } else {
-                $tableRows[] = array_merge(array($styledServiceId, \get_class($definition)), $tagsCount ? array_fill(0, $tagsCount, '') : array());
+                $tableRows[] = array_merge([$styledServiceId, \get_class($definition)], $tagsCount ? array_fill(0, $tagsCount, '') : []);
             }
         }
 
@@ -248,20 +248,20 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerDefinition(Definition $definition, array $options = array())
+    protected function describeContainerDefinition(Definition $definition, array $options = [])
     {
         if (isset($options['id'])) {
             $options['output']->title(sprintf('Information for Service "<info>%s</info>"', $options['id']));
         }
 
-        $tableHeaders = array('Option', 'Value');
+        $tableHeaders = ['Option', 'Value'];
 
-        $tableRows[] = array('Service ID', isset($options['id']) ? $options['id'] : '-');
-        $tableRows[] = array('Class', $definition->getClass() ?: '-');
+        $tableRows[] = ['Service ID', isset($options['id']) ? $options['id'] : '-'];
+        $tableRows[] = ['Class', $definition->getClass() ?: '-'];
 
         $omitTags = isset($options['omit_tags']) && $options['omit_tags'];
         if (!$omitTags && ($tags = $definition->getTags())) {
-            $tagInformation = array();
+            $tagInformation = [];
             foreach ($tags as $tagName => $tagData) {
                 foreach ($tagData as $tagParameters) {
                     $parameters = array_map(function ($key, $value) {
@@ -280,46 +280,46 @@ protected function describeContainerDefinition(Definition $definition, array $op
         } else {
             $tagInformation = '-';
         }
-        $tableRows[] = array('Tags', $tagInformation);
+        $tableRows[] = ['Tags', $tagInformation];
 
         $calls = $definition->getMethodCalls();
         if (\count($calls) > 0) {
-            $callInformation = array();
+            $callInformation = [];
             foreach ($calls as $call) {
                 $callInformation[] = $call[0];
             }
-            $tableRows[] = array('Calls', implode(', ', $callInformation));
+            $tableRows[] = ['Calls', implode(', ', $callInformation)];
         }
 
-        $tableRows[] = array('Public', $definition->isPublic() && !$definition->isPrivate() ? 'yes' : 'no');
-        $tableRows[] = array('Synthetic', $definition->isSynthetic() ? 'yes' : 'no');
-        $tableRows[] = array('Lazy', $definition->isLazy() ? 'yes' : 'no');
-        $tableRows[] = array('Shared', $definition->isShared() ? 'yes' : 'no');
-        $tableRows[] = array('Abstract', $definition->isAbstract() ? 'yes' : 'no');
-        $tableRows[] = array('Autowired', $definition->isAutowired() ? 'yes' : 'no');
-        $tableRows[] = array('Autoconfigured', $definition->isAutoconfigured() ? 'yes' : 'no');
+        $tableRows[] = ['Public', $definition->isPublic() && !$definition->isPrivate() ? 'yes' : 'no'];
+        $tableRows[] = ['Synthetic', $definition->isSynthetic() ? 'yes' : 'no'];
+        $tableRows[] = ['Lazy', $definition->isLazy() ? 'yes' : 'no'];
+        $tableRows[] = ['Shared', $definition->isShared() ? 'yes' : 'no'];
+        $tableRows[] = ['Abstract', $definition->isAbstract() ? 'yes' : 'no'];
+        $tableRows[] = ['Autowired', $definition->isAutowired() ? 'yes' : 'no'];
+        $tableRows[] = ['Autoconfigured', $definition->isAutoconfigured() ? 'yes' : 'no'];
 
         if ($definition->getFile()) {
-            $tableRows[] = array('Required File', $definition->getFile() ?: '-');
+            $tableRows[] = ['Required File', $definition->getFile() ?: '-'];
         }
 
         if ($factory = $definition->getFactory()) {
             if (\is_array($factory)) {
                 if ($factory[0] instanceof Reference) {
-                    $tableRows[] = array('Factory Service', $factory[0]);
+                    $tableRows[] = ['Factory Service', $factory[0]];
                 } elseif ($factory[0] instanceof Definition) {
                     throw new \InvalidArgumentException('Factory is not describable.');
                 } else {
-                    $tableRows[] = array('Factory Class', $factory[0]);
+                    $tableRows[] = ['Factory Class', $factory[0]];
                 }
-                $tableRows[] = array('Factory Method', $factory[1]);
+                $tableRows[] = ['Factory Method', $factory[1]];
             } else {
-                $tableRows[] = array('Factory Function', $factory);
+                $tableRows[] = ['Factory Function', $factory];
             }
         }
 
         $showArguments = isset($options['show_arguments']) && $options['show_arguments'];
-        $argumentsInformation = array();
+        $argumentsInformation = [];
         if ($showArguments && ($arguments = $definition->getArguments())) {
             foreach ($arguments as $argument) {
                 if ($argument instanceof ServiceClosureArgument) {
@@ -336,7 +336,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
                 }
             }
 
-            $tableRows[] = array('Arguments', implode("\n", $argumentsInformation));
+            $tableRows[] = ['Arguments', implode("\n", $argumentsInformation)];
         }
 
         $options['output']->table($tableHeaders, $tableRows);
@@ -345,7 +345,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null)
     {
         $options['output']->comment(sprintf('This service is an alias for the service <info>%s</info>', (string) $alias));
 
@@ -353,26 +353,26 @@ protected function describeContainerAlias(Alias $alias, array $options = array()
             return;
         }
 
-        return $this->describeContainerDefinition($builder->getDefinition((string) $alias), array_merge($options, array('id' => (string) $alias)));
+        return $this->describeContainerDefinition($builder->getDefinition((string) $alias), array_merge($options, ['id' => (string) $alias]));
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameter($parameter, array $options = array())
+    protected function describeContainerParameter($parameter, array $options = [])
     {
         $options['output']->table(
-            array('Parameter', 'Value'),
-            array(
-                array($options['parameter'], $this->formatParameter($parameter),
-            ),
-        ));
+            ['Parameter', 'Value'],
+            [
+                [$options['parameter'], $this->formatParameter($parameter),
+            ],
+        ]);
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array())
+    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = [])
     {
         $event = array_key_exists('event', $options) ? $options['event'] : null;
 
@@ -399,19 +399,19 @@ protected function describeEventDispatcherListeners(EventDispatcherInterface $ev
     /**
      * {@inheritdoc}
      */
-    protected function describeCallable($callable, array $options = array())
+    protected function describeCallable($callable, array $options = [])
     {
         $this->writeText($this->formatCallable($callable), $options);
     }
 
     private function renderEventListenerTable(EventDispatcherInterface $eventDispatcher, $event, array $eventListeners, SymfonyStyle $io)
     {
-        $tableHeaders = array('Order', 'Callable', 'Priority');
-        $tableRows = array();
+        $tableHeaders = ['Order', 'Callable', 'Priority'];
+        $tableRows = [];
 
         $order = 1;
         foreach ($eventListeners as $order => $listener) {
-            $tableRows[] = array(sprintf('#%d', $order + 1), $this->formatCallable($listener), $eventDispatcher->getListenerPriority($event, $listener));
+            $tableRows[] = [sprintf('#%d', $order + 1), $this->formatCallable($listener), $eventDispatcher->getListenerPriority($event, $listener)];
         }
 
         $io->table($tableHeaders, $tableRows);
@@ -466,7 +466,7 @@ private function formatCallable($callable): string
         throw new \InvalidArgumentException('Callable is not describable.');
     }
 
-    private function writeText(string $content, array $options = array())
+    private function writeText(string $content, array $options = [])
     {
         $this->write(
             isset($options['raw_text']) && $options['raw_text'] ? strip_tags($content) : $content,
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
index 41ce47a504fa..ceae1eb311ba 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/XmlDescriptor.php
@@ -32,7 +32,7 @@ class XmlDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeRouteCollection(RouteCollection $routes, array $options = array())
+    protected function describeRouteCollection(RouteCollection $routes, array $options = [])
     {
         $this->writeDocument($this->getRouteCollectionDocument($routes));
     }
@@ -40,7 +40,7 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeRoute(Route $route, array $options = array())
+    protected function describeRoute(Route $route, array $options = [])
     {
         $this->writeDocument($this->getRouteDocument($route, isset($options['name']) ? $options['name'] : null));
     }
@@ -48,7 +48,7 @@ protected function describeRoute(Route $route, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameters(ParameterBag $parameters, array $options = array())
+    protected function describeContainerParameters(ParameterBag $parameters, array $options = [])
     {
         $this->writeDocument($this->getContainerParametersDocument($parameters));
     }
@@ -56,7 +56,7 @@ protected function describeContainerParameters(ParameterBag $parameters, array $
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerTags(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerTags(ContainerBuilder $builder, array $options = [])
     {
         $this->writeDocument($this->getContainerTagsDocument($builder, isset($options['show_hidden']) && $options['show_hidden']));
     }
@@ -64,7 +64,7 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null)
     {
         if (!isset($options['id'])) {
             throw new \InvalidArgumentException('An "id" option must be provided.');
@@ -76,7 +76,7 @@ protected function describeContainerService($service, array $options = array(),
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerServices(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerServices(ContainerBuilder $builder, array $options = [])
     {
         $this->writeDocument($this->getContainerServicesDocument($builder, isset($options['tag']) ? $options['tag'] : null, isset($options['show_hidden']) && $options['show_hidden'], isset($options['show_arguments']) && $options['show_arguments'], isset($options['filter']) ? $options['filter'] : null));
     }
@@ -84,7 +84,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerDefinition(Definition $definition, array $options = array())
+    protected function describeContainerDefinition(Definition $definition, array $options = [])
     {
         $this->writeDocument($this->getContainerDefinitionDocument($definition, isset($options['id']) ? $options['id'] : null, isset($options['omit_tags']) && $options['omit_tags'], isset($options['show_arguments']) && $options['show_arguments']));
     }
@@ -92,7 +92,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null)
     {
         $dom = new \DOMDocument('1.0', 'UTF-8');
         $dom->appendChild($dom->importNode($this->getContainerAliasDocument($alias, isset($options['id']) ? $options['id'] : null)->childNodes->item(0), true));
@@ -109,7 +109,7 @@ protected function describeContainerAlias(Alias $alias, array $options = array()
     /**
      * {@inheritdoc}
      */
-    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array())
+    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = [])
     {
         $this->writeDocument($this->getEventDispatcherListenersDocument($eventDispatcher, array_key_exists('event', $options) ? $options['event'] : null));
     }
@@ -117,7 +117,7 @@ protected function describeEventDispatcherListeners(EventDispatcherInterface $ev
     /**
      * {@inheritdoc}
      */
-    protected function describeCallable($callable, array $options = array())
+    protected function describeCallable($callable, array $options = [])
     {
         $this->writeDocument($this->getCallableDocument($callable));
     }
@@ -125,7 +125,7 @@ protected function describeCallable($callable, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameter($parameter, array $options = array())
+    protected function describeContainerParameter($parameter, array $options = [])
     {
         $this->writeDocument($this->getContainerParameterDocument($parameter, $options));
     }
@@ -371,7 +371,7 @@ private function getContainerDefinitionDocument(Definition $definition, string $
      */
     private function getArgumentNodes(array $arguments, \DOMDocument $dom)
     {
-        $nodes = array();
+        $nodes = [];
 
         foreach ($arguments as $argumentKey => $argument) {
             $argumentXML = $dom->createElement('argument');
@@ -426,7 +426,7 @@ private function getContainerAliasDocument(Alias $alias, string $id = null): \DO
         return $dom;
     }
 
-    private function getContainerParameterDocument($parameter, $options = array()): \DOMDocument
+    private function getContainerParameterDocument($parameter, $options = []): \DOMDocument
     {
         $dom = new \DOMDocument('1.0', 'UTF-8');
         $dom->appendChild($parameterXML = $dom->createElement('parameter'));
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php b/src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php
index 94a53b87bf81..f2563803767f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php
@@ -65,7 +65,7 @@ public function setContainer(ContainerInterface $container)
     protected function getParameter(string $name)
     {
         if (!$this->container->has('parameter_bag')) {
-            throw new ServiceNotFoundException('parameter_bag', null, null, array(), sprintf('The "%s::getParameter()" method is missing a parameter bag to work properly. Did you forget to register your controller as a service subscriber? This can be fixed either by using autoconfiguration or by manually wiring a "parameter_bag" in the service locator passed to the controller.', \get_class($this)));
+            throw new ServiceNotFoundException('parameter_bag', null, null, [], sprintf('The "%s::getParameter()" method is missing a parameter bag to work properly. Did you forget to register your controller as a service subscriber? This can be fixed either by using autoconfiguration or by manually wiring a "parameter_bag" in the service locator passed to the controller.', \get_class($this)));
         }
 
         return $this->container->get('parameter_bag')->get($name);
@@ -73,7 +73,7 @@ protected function getParameter(string $name)
 
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             'router' => '?'.RouterInterface::class,
             'request_stack' => '?'.RequestStack::class,
             'http_kernel' => '?'.HttpKernelInterface::class,
@@ -88,6 +88,6 @@ public static function getSubscribedServices()
             'security.csrf.token_manager' => '?'.CsrfTokenManagerInterface::class,
             'parameter_bag' => '?'.ContainerBagInterface::class,
             'message_bus' => '?'.MessageBusInterface::class,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
index 6202ff9eb9ee..237b5d6c85dc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
@@ -68,7 +68,7 @@ protected function get(string $id)
      *
      * @final
      */
-    protected function generateUrl(string $route, array $parameters = array(), int $referenceType = UrlGeneratorInterface::ABSOLUTE_PATH): string
+    protected function generateUrl(string $route, array $parameters = [], int $referenceType = UrlGeneratorInterface::ABSOLUTE_PATH): string
     {
         return $this->container->get('router')->generate($route, $parameters, $referenceType);
     }
@@ -80,7 +80,7 @@ protected function generateUrl(string $route, array $parameters = array(), int $
      *
      * @final
      */
-    protected function forward(string $controller, array $path = array(), array $query = array()): Response
+    protected function forward(string $controller, array $path = [], array $query = []): Response
     {
         $request = $this->container->get('request_stack')->getCurrentRequest();
         $path['_controller'] = $controller;
@@ -104,7 +104,7 @@ protected function redirect(string $url, int $status = 302): RedirectResponse
      *
      * @final
      */
-    protected function redirectToRoute(string $route, array $parameters = array(), int $status = 302): RedirectResponse
+    protected function redirectToRoute(string $route, array $parameters = [], int $status = 302): RedirectResponse
     {
         return $this->redirect($this->generateUrl($route, $parameters), $status);
     }
@@ -114,12 +114,12 @@ protected function redirectToRoute(string $route, array $parameters = array(), i
      *
      * @final
      */
-    protected function json($data, int $status = 200, array $headers = array(), array $context = array()): JsonResponse
+    protected function json($data, int $status = 200, array $headers = [], array $context = []): JsonResponse
     {
         if ($this->container->has('serializer')) {
-            $json = $this->container->get('serializer')->serialize($data, 'json', array_merge(array(
+            $json = $this->container->get('serializer')->serialize($data, 'json', array_merge([
                 'json_encode_options' => JsonResponse::DEFAULT_ENCODING_OPTIONS,
-            ), $context));
+            ], $context));
 
             return new JsonResponse($json, $status, $headers, true);
         }
@@ -198,7 +198,7 @@ protected function denyAccessUnlessGranted($attributes, $subject = null, string
      *
      * @final
      */
-    protected function renderView(string $view, array $parameters = array()): string
+    protected function renderView(string $view, array $parameters = []): string
     {
         if ($this->container->has('templating')) {
             return $this->container->get('templating')->render($view, $parameters);
@@ -216,7 +216,7 @@ protected function renderView(string $view, array $parameters = array()): string
      *
      * @final
      */
-    protected function render(string $view, array $parameters = array(), Response $response = null): Response
+    protected function render(string $view, array $parameters = [], Response $response = null): Response
     {
         if ($this->container->has('templating')) {
             $content = $this->container->get('templating')->render($view, $parameters);
@@ -240,7 +240,7 @@ protected function render(string $view, array $parameters = array(), Response $r
      *
      * @final
      */
-    protected function stream(string $view, array $parameters = array(), StreamedResponse $response = null): StreamedResponse
+    protected function stream(string $view, array $parameters = [], StreamedResponse $response = null): StreamedResponse
     {
         if ($this->container->has('templating')) {
             $templating = $this->container->get('templating');
@@ -306,7 +306,7 @@ protected function createAccessDeniedException(string $message = 'Access Denied.
      *
      * @final
      */
-    protected function createForm(string $type, $data = null, array $options = array()): FormInterface
+    protected function createForm(string $type, $data = null, array $options = []): FormInterface
     {
         return $this->container->get('form.factory')->create($type, $data, $options);
     }
@@ -316,7 +316,7 @@ protected function createForm(string $type, $data = null, array $options = array
      *
      * @final
      */
-    protected function createFormBuilder($data = null, array $options = array()): FormBuilderInterface
+    protected function createFormBuilder($data = null, array $options = []): FormBuilderInterface
     {
         return $this->container->get('form.factory')->createBuilder(FormType::class, $data, $options);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CacheCollectorPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CacheCollectorPass.php
index 549cf2797c61..429ce857d0e2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CacheCollectorPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CacheCollectorPass.php
@@ -45,16 +45,16 @@ public function process(ContainerBuilder $container)
             $recorder = new Definition(is_subclass_of($definition->getClass(), TagAwareAdapterInterface::class) ? TraceableTagAwareAdapter::class : TraceableAdapter::class);
             $recorder->setTags($definition->getTags());
             $recorder->setPublic($definition->isPublic());
-            $recorder->setArguments(array(new Reference($innerId = $id.'.recorder_inner')));
+            $recorder->setArguments([new Reference($innerId = $id.'.recorder_inner')]);
 
-            $definition->setTags(array());
+            $definition->setTags([]);
             $definition->setPublic(false);
 
             $container->setDefinition($innerId, $definition);
             $container->setDefinition($id, $recorder);
 
             // Tell the collector to add the new instance
-            $collectorDefinition->addMethodCall('addInstance', array($id, new Reference($id)));
+            $collectorDefinition->addMethodCall('addInstance', [$id, new Reference($id)]);
             $collectorDefinition->setPublic(false);
         }
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TestServiceContainerRealRefPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TestServiceContainerRealRefPass.php
index a4eaa9fbe36e..222b5c7b75af 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TestServiceContainerRealRefPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TestServiceContainerRealRefPass.php
@@ -32,7 +32,7 @@ public function process(ContainerBuilder $container)
 
         foreach ($privateServices as $id => $argument) {
             if (isset($definitions[$target = (string) $argument->getValues()[0]])) {
-                $argument->setValues(array(new Reference($target)));
+                $argument->setValues([new Reference($target)]);
             } else {
                 unset($privateServices[$id]);
             }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TestServiceContainerWeakRefPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TestServiceContainerWeakRefPass.php
index 060d234d3877..dec6553c87e2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TestServiceContainerWeakRefPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TestServiceContainerWeakRefPass.php
@@ -27,7 +27,7 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $privateServices = array();
+        $privateServices = [];
         $definitions = $container->getDefinitions();
 
         foreach ($definitions as $id => $definition) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
index 6dad337cfa1b..f6732e39d6ff 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -62,7 +62,7 @@ public function getConfigTreeBuilder()
             ->beforeNormalization()
                 ->ifTrue(function ($v) { return !isset($v['assets']) && isset($v['templating']) && class_exists(Package::class); })
                 ->then(function ($v) {
-                    $v['assets'] = array();
+                    $v['assets'] = [];
 
                     return $v;
                 })
@@ -77,7 +77,7 @@ public function getConfigTreeBuilder()
                 ->booleanNode('test')->end()
                 ->scalarNode('default_locale')->defaultValue('en')->end()
                 ->arrayNode('trusted_hosts')
-                    ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                    ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                     ->prototype('scalar')->end()
                 ->end()
             ->end()
@@ -115,9 +115,9 @@ private function addCsrfSection(ArrayNodeDefinition $rootNode)
         $rootNode
             ->children()
                 ->arrayNode('csrf_protection')
-                    ->treatFalseLike(array('enabled' => false))
-                    ->treatTrueLike(array('enabled' => true))
-                    ->treatNullLike(array('enabled' => true))
+                    ->treatFalseLike(['enabled' => false])
+                    ->treatTrueLike(['enabled' => true])
+                    ->treatNullLike(['enabled' => true])
                     ->addDefaultsIfNotSet()
                     ->children()
                         // defaults to framework.session.enabled && !class_exists(FullStack::class) && interface_exists(CsrfTokenManagerInterface::class)
@@ -137,9 +137,9 @@ private function addFormSection(ArrayNodeDefinition $rootNode)
                     ->{!class_exists(FullStack::class) && class_exists(Form::class) ? 'canBeDisabled' : 'canBeEnabled'}()
                     ->children()
                         ->arrayNode('csrf_protection')
-                            ->treatFalseLike(array('enabled' => false))
-                            ->treatTrueLike(array('enabled' => true))
-                            ->treatNullLike(array('enabled' => true))
+                            ->treatFalseLike(['enabled' => false])
+                            ->treatTrueLike(['enabled' => true])
+                            ->treatNullLike(['enabled' => true])
                             ->addDefaultsIfNotSet()
                             ->children()
                                 ->booleanNode('enabled')->defaultNull()->end() // defaults to framework.csrf_protection.enabled
@@ -222,10 +222,10 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                 unset($workflows['enabled']);
 
                                 if (1 === \count($workflows) && isset($workflows[0]['enabled']) && 1 === \count($workflows[0])) {
-                                    $workflows = array();
+                                    $workflows = [];
                                 }
 
-                                if (1 === \count($workflows) && isset($workflows['workflows']) && array_keys($workflows['workflows']) !== range(0, \count($workflows) - 1) && !empty(array_diff(array_keys($workflows['workflows']), array('audit_trail', 'type', 'marking_store', 'supports', 'support_strategy', 'initial_place', 'places', 'transitions')))) {
+                                if (1 === \count($workflows) && isset($workflows['workflows']) && array_keys($workflows['workflows']) !== range(0, \count($workflows) - 1) && !empty(array_diff(array_keys($workflows['workflows']), ['audit_trail', 'type', 'marking_store', 'supports', 'support_strategy', 'initial_place', 'places', 'transitions']))) {
                                     $workflows = $workflows['workflows'];
                                 }
 
@@ -237,10 +237,10 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                     unset($workflows[$key]['enabled']);
                                 }
 
-                                $v = array(
+                                $v = [
                                     'enabled' => true,
                                     'workflows' => $workflows,
-                                );
+                                ];
                             }
 
                             return $v;
@@ -258,19 +258,19 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                         ->canBeEnabled()
                                     ->end()
                                     ->enumNode('type')
-                                        ->values(array('workflow', 'state_machine'))
+                                        ->values(['workflow', 'state_machine'])
                                         ->defaultValue('state_machine')
                                     ->end()
                                     ->arrayNode('marking_store')
                                         ->fixXmlConfig('argument')
                                         ->children()
                                             ->enumNode('type')
-                                                ->values(array('multiple_state', 'single_state'))
+                                                ->values(['multiple_state', 'single_state'])
                                             ->end()
                                             ->arrayNode('arguments')
                                                 ->beforeNormalization()
                                                     ->ifString()
-                                                    ->then(function ($v) { return array($v); })
+                                                    ->then(function ($v) { return [$v]; })
                                                 ->end()
                                                 ->requiresAtLeastOneElement()
                                                 ->prototype('scalar')
@@ -292,7 +292,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                     ->arrayNode('supports')
                                         ->beforeNormalization()
                                             ->ifString()
-                                            ->then(function ($v) { return array($v); })
+                                            ->then(function ($v) { return [$v]; })
                                         ->end()
                                         ->prototype('scalar')
                                             ->cannotBeEmpty()
@@ -315,7 +315,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 // It's an indexed array of shape  ['place1', 'place2']
                                                 if (isset($places[0]) && \is_string($places[0])) {
                                                     return array_map(function (string $place) {
-                                                        return array('name' => $place);
+                                                        return ['name' => $place];
                                                     }, $places);
                                                 }
 
@@ -345,8 +345,8 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->end()
                                                 ->arrayNode('metadata')
                                                     ->normalizeKeys(false)
-                                                    ->defaultValue(array())
-                                                    ->example(array('color' => 'blue', 'description' => 'Workflow to manage article.'))
+                                                    ->defaultValue([])
+                                                    ->example(['color' => 'blue', 'description' => 'Workflow to manage article.'])
                                                     ->prototype('variable')
                                                     ->end()
                                                 ->end()
@@ -389,7 +389,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->arrayNode('from')
                                                     ->beforeNormalization()
                                                         ->ifString()
-                                                        ->then(function ($v) { return array($v); })
+                                                        ->then(function ($v) { return [$v]; })
                                                     ->end()
                                                     ->requiresAtLeastOneElement()
                                                     ->prototype('scalar')
@@ -399,7 +399,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->arrayNode('to')
                                                     ->beforeNormalization()
                                                         ->ifString()
-                                                        ->then(function ($v) { return array($v); })
+                                                        ->then(function ($v) { return [$v]; })
                                                     ->end()
                                                     ->requiresAtLeastOneElement()
                                                     ->prototype('scalar')
@@ -408,8 +408,8 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->end()
                                                 ->arrayNode('metadata')
                                                     ->normalizeKeys(false)
-                                                    ->defaultValue(array())
-                                                    ->example(array('color' => 'blue', 'description' => 'Workflow to manage article.'))
+                                                    ->defaultValue([])
+                                                    ->example(['color' => 'blue', 'description' => 'Workflow to manage article.'])
                                                     ->prototype('variable')
                                                     ->end()
                                                 ->end()
@@ -418,8 +418,8 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                     ->end()
                                     ->arrayNode('metadata')
                                         ->normalizeKeys(false)
-                                        ->defaultValue(array())
-                                        ->example(array('color' => 'blue', 'description' => 'Workflow to manage article.'))
+                                        ->defaultValue([])
+                                        ->example(['color' => 'blue', 'description' => 'Workflow to manage article.'])
                                         ->prototype('variable')
                                         ->end()
                                     ->end()
@@ -529,7 +529,7 @@ private function addRequestSection(ArrayNodeDefinition $rootNode)
                                 ->end()
                                 ->beforeNormalization()
                                     ->ifTrue(function ($v) { return !\is_array($v); })
-                                    ->then(function ($v) { return array($v); })
+                                    ->then(function ($v) { return [$v]; })
                                 ->end()
                                 ->prototype('scalar')->end()
                             ->end()
@@ -549,7 +549,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                     ->canBeEnabled()
                     ->beforeNormalization()
                         ->ifTrue(function ($v) { return false === $v || \is_array($v) && false === $v['enabled']; })
-                        ->then(function () { return array('enabled' => false, 'engines' => false); })
+                        ->then(function () { return ['enabled' => false, 'engines' => false]; })
                     ->end()
                     ->children()
                         ->scalarNode('hinclude_default_template')->defaultNull()->end()
@@ -564,7 +564,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                                     ->validate()
                                         ->ifTrue(function ($v) {return !\in_array('FrameworkBundle:Form', $v); })
                                         ->then(function ($v) {
-                                            return array_merge(array('FrameworkBundle:Form'), $v);
+                                            return array_merge(['FrameworkBundle:Form'], $v);
                                         })
                                     ->end()
                                 ->end()
@@ -574,13 +574,13 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                     ->fixXmlConfig('engine')
                     ->children()
                         ->arrayNode('engines')
-                            ->example(array('twig'))
+                            ->example(['twig'])
                             ->isRequired()
                             ->requiresAtLeastOneElement()
                             ->canBeUnset()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v) && false !== $v; })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                             ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -590,7 +590,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                         ->arrayNode('loaders')
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                              ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -618,7 +618,7 @@ private function addAssetsSection(ArrayNodeDefinition $rootNode)
                             ->requiresAtLeastOneElement()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                             ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -662,7 +662,7 @@ private function addAssetsSection(ArrayNodeDefinition $rootNode)
                                         ->requiresAtLeastOneElement()
                                         ->beforeNormalization()
                                             ->ifTrue(function ($v) { return !\is_array($v); })
-                                            ->then(function ($v) { return array($v); })
+                                            ->then(function ($v) { return [$v]; })
                                         ->end()
                                         ->prototype('scalar')->end()
                                     ->end()
@@ -704,9 +704,9 @@ private function addTranslatorSection(ArrayNodeDefinition $rootNode)
                     ->fixXmlConfig('path')
                     ->children()
                         ->arrayNode('fallbacks')
-                            ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                            ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                             ->prototype('scalar')->end()
-                            ->defaultValue(array('en'))
+                            ->defaultValue(['en'])
                         ->end()
                         ->booleanNode('logging')->defaultValue(false)->end()
                         ->scalarNode('formatter')->defaultValue('translator.formatter.default')->end()
@@ -755,9 +755,9 @@ private function addValidationSection(ArrayNodeDefinition $rootNode)
                         ->scalarNode('cache')->end()
                         ->booleanNode('enable_annotations')->{!class_exists(FullStack::class) && class_exists(Annotation::class) ? 'defaultTrue' : 'defaultFalse'}()->end()
                         ->arrayNode('static_method')
-                            ->defaultValue(array('loadValidatorMetadata'))
+                            ->defaultValue(['loadValidatorMetadata'])
                             ->prototype('scalar')->end()
-                            ->treatFalseLike(array())
+                            ->treatFalseLike([])
                             ->validate()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
                                 ->then(function ($v) { return (array) $v; })
@@ -765,7 +765,7 @@ private function addValidationSection(ArrayNodeDefinition $rootNode)
                         ->end()
                         ->scalarNode('translation_domain')->defaultValue('validators')->end()
                         ->booleanNode('strict_email')->end()
-                        ->enumNode('email_validation_mode')->values(array('html5', 'loose', 'strict'))->end()
+                        ->enumNode('email_validation_mode')->values(['html5', 'loose', 'strict'])->end()
                         ->arrayNode('mapping')
                             ->addDefaultsIfNotSet()
                             ->fixXmlConfig('path')
@@ -940,7 +940,7 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                     ->info('Lock configuration')
                     ->{!class_exists(FullStack::class) && clas
341A
s_exists(Lock::class) ? 'canBeDisabled' : 'canBeEnabled'}()
                     ->beforeNormalization()
-                        ->ifString()->then(function ($v) { return array('enabled' => true, 'resources' => $v); })
+                        ->ifString()->then(function ($v) { return ['enabled' => true, 'resources' => $v]; })
                     ->end()
                     ->beforeNormalization()
                         ->ifTrue(function ($v) { return \is_array($v) && !isset($v['resources']); })
@@ -948,7 +948,7 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                             $e = $v['enabled'];
                             unset($v['enabled']);
 
-                            return array('enabled' => $e, 'resources' => $v);
+                            return ['enabled' => $e, 'resources' => $v];
                         })
                     ->end()
                     ->addDefaultsIfNotSet()
@@ -956,16 +956,16 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                     ->children()
                         ->arrayNode('resources')
                             ->requiresAtLeastOneElement()
-                            ->defaultValue(array('default' => array(class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock')))
+                            ->defaultValue(['default' => [class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock']])
                             ->beforeNormalization()
-                                ->ifString()->then(function ($v) { return array('default' => $v); })
+                                ->ifString()->then(function ($v) { return ['default' => $v]; })
                             ->end()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return \is_array($v) && array_keys($v) === range(0, \count($v) - 1); })
-                                ->then(function ($v) { return array('default' => $v); })
+                                ->then(function ($v) { return ['default' => $v]; })
                             ->end()
                             ->prototype('array')
-                                ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                                ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                                 ->prototype('scalar')->end()
                             ->end()
                         ->end()
@@ -1003,16 +1003,16 @@ private function addMessengerSection(ArrayNodeDefinition $rootNode)
                                 ->always()
                                 ->then(function ($config) {
                                     if (!\is_array($config)) {
-                                        return array();
+                                        return [];
                                     }
 
-                                    $newConfig = array();
+                                    $newConfig = [];
                                     foreach ($config as $k => $v) {
                                         if (!\is_int($k)) {
-                                            $newConfig[$k] = array(
-                                                'senders' => $v['senders'] ?? (\is_array($v) ? array_values($v) : array($v)),
+                                            $newConfig[$k] = [
+                                                'senders' => $v['senders'] ?? (\is_array($v) ? array_values($v) : [$v]),
                                                 'send_and_handle' => $v['send_and_handle'] ?? false,
-                                            );
+                                            ];
                                         } else {
                                             $newConfig[$v['message-class']]['senders'] = array_map(
                                                 function ($a) {
@@ -1045,7 +1045,7 @@ function ($a) {
                                 ->arrayNode('context')
                                     ->normalizeKeys(false)
                                     ->useAttributeAsKey('name')
-                                    ->defaultValue(array())
+                                    ->defaultValue([])
                                     ->prototype('variable')->end()
                                 ->end()
                             ->end()
@@ -1058,7 +1058,7 @@ function ($a) {
                                 ->beforeNormalization()
                                     ->ifString()
                                     ->then(function (string $dsn) {
-                                        return array('dsn' => $dsn);
+                                        return ['dsn' => $dsn];
                                     })
                                 ->end()
                                 ->fixXmlConfig('option')
@@ -1066,7 +1066,7 @@ function ($a) {
                                     ->scalarNode('dsn')->end()
                                     ->arrayNode('options')
                                         ->normalizeKeys(false)
-                                        ->defaultValue(array())
+                                        ->defaultValue([])
                                         ->prototype('variable')
                                         ->end()
                                     ->end()
@@ -1075,7 +1075,7 @@ function ($a) {
                         ->end()
                         ->scalarNode('default_bus')->defaultValue(null)->end()
                         ->arrayNode('buses')
-                            ->defaultValue(array('messenger.bus.default' => array('default_middleware' => true, 'middleware' => array())))
+                            ->defaultValue(['messenger.bus.default' => ['default_middleware' => true, 'middleware' => []]])
                             ->useAttributeAsKey('name')
                             ->prototype('array')
                                 ->addDefaultsIfNotSet()
@@ -1085,16 +1085,16 @@ function ($a) {
                                         ->beforeNormalization()
                                             ->ifString()
                                             ->then(function (string $middleware) {
-                                                return array($middleware);
+                                                return [$middleware];
                                             })
                                         ->end()
-                                        ->defaultValue(array())
+                                        ->defaultValue([])
                                         ->prototype('array')
                                             ->beforeNormalization()
                                                 ->always()
                                                 ->then(function ($middleware): array {
                                                     if (!\is_array($middleware)) {
-                                                        return array('id' => $middleware);
+                                                        return ['id' => $middleware];
                                                     }
                                                     if (isset($middleware['id'])) {
                                                         return $middleware;
@@ -1103,10 +1103,10 @@ function ($a) {
                                                         throw new \InvalidArgumentException(sprintf('There is an error at path "framework.messenger" in one of the buses middleware definitions: expected a single entry for a middleware item config, with factory id as key and arguments as value. Got "%s".', json_encode($middleware)));
                                                     }
 
-                                                    return array(
+                                                    return [
                                                         'id' => key($middleware),
                                                         'arguments' => current($middleware),
-                                                    );
+                                                    ];
                                                 })
                                             ->end()
                                             ->fixXmlConfig('argument')
@@ -1114,7 +1114,7 @@ function ($a) {
                                                 ->scalarNode('id')->isRequired()->cannotBeEmpty()->end()
                                                 ->arrayNode('arguments')
                                                     ->normalizeKeys(false)
-                                                    ->defaultValue(array())
+                                                    ->defaultValue([])
                                                     ->prototype('variable')
                                                 ->end()
                                             ->end()
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index d20008d25c4f..f210aec900be 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -174,14 +174,14 @@ public function load(array $configs, ContainerBuilder $container)
 
         if (!$container->hasParameter('debug.file_link_format')) {
             if (!$container->hasParameter('templating.helper.code.file_link_format')) {
-                $links = array(
+                $links = [
                     'textmate' => 'txmt://open?url=file://%%f&line=%%l',
                     'macvim' => 'mvim://open?url=file://%%f&line=%%l',
                     'emacs' => 'emacs://open?url=file://%%f&line=%%l',
                     'sublime' => 'subl://open?url=file://%%f&line=%%l',
                     'phpstorm' => 'phpstorm://open?file=%%f&line=%%l',
                     'atom' => 'atom://core/open/file?filename=%%f&line=%%l',
-                );
+                ];
                 $ide = $config['ide'];
 
                 $container->setParameter('templating.helper.code.file_link_format', str_replace('%', '%%', ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format')) ?: (isset($links[$ide]) ? $links[$ide] : $ide));
@@ -291,14 +291,14 @@ public function load(array $configs, ContainerBuilder $container)
             $loader->load('web_link.xml');
         }
 
-        $this->addAnnotatedClassesToCompile(array(
+        $this->addAnnotatedClassesToCompile([
             '**\\Controller\\',
             '**\\Entity\\',
 
             // Added explicitly so that we don't rely on the class map being dumped to make it work
             'Symfony\\Bundle\\FrameworkBundle\\Controller\\AbstractController',
             'Symfony\\Bundle\\FrameworkBundle\\Controller\\Controller',
-        ));
+        ]);
 
         $container->registerForAutoconfiguration(Command::class)
             ->addTag('console.command');
@@ -329,7 +329,7 @@ public function load(array $configs, ContainerBuilder $container)
         $container->registerForAutoconfiguration(EventSubscriberInterface::class)
             ->addTag('kernel.event_subscriber');
         $container->registerForAutoconfiguration(ResettableInterface::class)
-            ->addTag('kernel.reset', array('method' => 'reset'));
+            ->addTag('kernel.reset', ['method' => 'reset']);
         $container->registerForAutoconfiguration(PropertyListExtractorInterface::class)
             ->addTag('property_info.list_extractor');
         $container->registerForAutoconfiguration(PropertyTypeExtractorInterface::class)
@@ -357,7 +357,7 @@ public function load(array $configs, ContainerBuilder $container)
 
         if (!$container->getParameter('kernel.debug')) {
             // remove tagged iterator argument for resource checkers
-            $container->getDefinition('config_cache_factory')->setArguments(array());
+            $container->getDefinition('config_cache_factory')->setArguments([]);
         }
     }
 
@@ -429,7 +429,7 @@ private function registerProfilerConfiguration(array $config, ContainerBuilder $
     {
         if (!$this->isConfigEnabled($container, $config)) {
             // this is needed for the WebProfiler to work even if the profiler is disabled
-            $container->setParameter('data_collector.templates', array());
+            $container->setParameter('data_collector.templates', []);
 
             return;
         }
@@ -469,7 +469,7 @@ private function registerProfilerConfiguration(array $config, ContainerBuilder $
 
         $container->getDefinition('profiler')
             ->addArgument($config['collect'])
-            ->addTag('kernel.reset', array('method' => 'reset'));
+            ->addTag('kernel.reset', ['method' => 'reset']);
     }
 
     private function registerWorkflowConfiguration(array $config, ContainerBuilder $container, XmlFileLoader $loader)
@@ -493,11 +493,11 @@ private function registerWorkfl
F438
owConfiguration(array $config, ContainerBuilder $
             $workflowId = sprintf('%s.%s', $type, $name);
 
             // Process Metadata (workflow + places (transition is done in the "create transition" block))
-            $metadataStoreDefinition = new Definition(Workflow\Metadata\InMemoryMetadataStore::class, array(array(), array(), null));
+            $metadataStoreDefinition = new Definition(Workflow\Metadata\InMemoryMetadataStore::class, [[], [], null]);
             if ($workflow['metadata']) {
                 $metadataStoreDefinition->replaceArgument(0, $workflow['metadata']);
             }
-            $placesMetadata = array();
+            $placesMetadata = [];
             foreach ($workflow['places'] as $place) {
                 if ($place['metadata']) {
                     $placesMetadata[$place['name']] = $place['metadata'];
@@ -508,14 +508,14 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             }
 
             // Create transitions
-            $transitions = array();
-            $guardsConfiguration = array();
+            $transitions = [];
+            $guardsConfiguration = [];
             $transitionsMetadataDefinition = new Definition(\SplObjectStorage::class);
             // Global transition counter per workflow
             $transitionCounter = 0;
             foreach ($workflow['transitions'] as $transition) {
                 if ('workflow' === $type) {
-                    $transitionDefinition = new Definition(Workflow\Transition::class, array($transition['name'], $transition['from'], $transition['to']));
+                    $transitionDefinition = new Definition(Workflow\Transition::class, [$transition['name'], $transition['from'], $transition['to']]);
                     $transitionDefinition->setPublic(false);
                     $transitionId = sprintf('%s.transition.%s', $workflowId, $transitionCounter++);
                     $container->setDefinition($transitionId, $transitionDefinition);
@@ -529,15 +529,15 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                         $guardsConfiguration[$eventName][] = $configuration;
                     }
                     if ($transition['metadata']) {
-                        $transitionsMetadataDefinition->addMethodCall('attach', array(
+                        $transitionsMetadataDefinition->addMethodCall('attach', [
                             new Reference($transitionId),
                             $transition['metadata'],
-                        ));
+                        ]);
                     }
                 } elseif ('state_machine' === $type) {
                     foreach ($transition['from'] as $from) {
                         foreach ($transition['to'] as $to) {
-                            $transitionDefinition = new Definition(Workflow\Transition::class, array($transition['name'], $from, $to));
+                            $transitionDefinition = new Definition(Workflow\Transition::class, [$transition['name'], $from, $to]);
                             $transitionDefinition->setPublic(false);
                             $transitionId = sprintf('%s.transition.%s', $workflowId, $transitionCounter++);
                             $container->setDefinition($transitionId, $transitionDefinition);
@@ -551,10 +551,10 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                                 $guardsConfiguration[$eventName][] = $configuration;
                             }
                             if ($transition['metadata']) {
-                                $transitionsMetadataDefinition->addMethodCall('attach', array(
+                                $transitionsMetadataDefinition->addMethodCall('attach', [
                                     new Reference($transitionId),
                                     $transition['metadata'],
-                                ));
+                                ]);
                             }
                         }
                     }
@@ -572,11 +572,11 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             $definitionDefinition->addArgument($transitions);
             $definitionDefinition->addArgument($workflow['initial_place'] ?? null);
             $definitionDefinition->addArgument($metadataStoreDefinition);
-            $definitionDefinition->addTag('workflow.definition', array(
+            $definitionDefinition->addTag('workflow.definition', [
                 'name' => $name,
                 'type' => $type,
                 'marking_store' => isset($workflow['marking_store']['type']) ? $workflow['marking_store']['type'] : null,
-            ));
+            ]);
 
             // Create MarkingStore
             if (isset($workflow['marking_store']['type'])) {
@@ -603,22 +603,22 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             // Add workflow to Registry
             if ($workflow['supports']) {
                 foreach ($workflow['supports'] as $supportedClassName) {
-                    $strategyDefinition = new Definition(Workflow\SupportStrategy\InstanceOfSupportStrategy::class, array($supportedClassName));
+                    $strategyDefinition = new Definition(Workflow\SupportStrategy\InstanceOfSupportStrategy::class, [$supportedClassName]);
                     $strategyDefinition->setPublic(false);
-                    $registryDefinition->addMethodCall('addWorkflow', array(new Reference($workflowId), $strategyDefinition));
+                    $registryDefinition->addMethodCall('addWorkflow', [new Reference($workflowId), $strategyDefinition]);
                 }
             } elseif (isset($workflow['support_strategy'])) {
-                $registryDefinition->addMethodCall('addWorkflow', array(new Reference($workflowId), new Reference($workflow['support_strategy'])));
+                $registryDefinition->addMethodCall('addWorkflow', [new Reference($workflowId), new Reference($workflow['support_strategy'])]);
             }
 
             // Enable the AuditTrail
             if ($workflow['audit_trail']['enabled']) {
                 $listener = new Definition(Workflow\EventListener\AuditTrailListener::class);
                 $listener->setPrivate(true);
-                $listener->addTag('monolog.logger', array('channel' => 'workflow'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.leave', $name), 'method' => 'onLeave'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.transition', $name), 'method' => 'onTransition'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.enter', $name), 'method' => 'onEnter'));
+                $listener->addTag('monolog.logger', ['channel' => 'workflow']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.leave', $name), 'method' => 'onLeave']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.transition', $name), 'method' => 'onTransition']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.enter', $name), 'method' => 'onEnter']);
                 $listener->addArgument(new Reference('logger'));
                 $container->setDefinition(sprintf('%s.listener.audit_trail', $workflowId), $listener);
             }
@@ -636,7 +636,7 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                 $guard = new Definition(Workflow\EventListener\GuardListener::class);
                 $guard->setPrivate(true);
 
-                $guard->setArguments(array(
+                $guard->setArguments([
                     $guardsConfiguration,
                     new Reference('workflow.security.expression_language'),
                     new Reference('security.token_storage'),
@@ -644,9 +644,9 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                     new Reference('security.authentication.trust_resolver'),
                     new Reference('security.role_hierarchy'),
                     new Reference('validator', ContainerInterface::NULL_ON_INVALID_REFERENCE),
-                ));
+                ]);
                 foreach ($guardsConfiguration as $eventName => $config) {
-                    $guard->addTag('kernel.event_listener', array('event' => $eventName, 'method' => 'onTransition'));
+                    $guard->addTag('kernel.event_listener', ['event' => $eventName, 'method' => 'onTransition']);
                 }
 
                 $container->setDefinition(sprintf('%s.listener.guard', $workflowId), $guard);
@@ -663,7 +663,7 @@ private function registerDebugConfiguration(array $config, ContainerBuilder $con
             $container->register('debug.stopwatch', Stopwatch::class)
                 ->addArgument(true)
                 ->setPrivate(true)
-                ->addTag('kernel.reset', array('method' => 'reset'));
+                ->addTag('kernel.reset', ['method' => 'reset']);
             $container->setAlias(Stopwatch::class, new Alias('debug.stopwatch', false));
         }
 
@@ -734,24 +734,24 @@ private function registerRouterConfiguration(array $config, ContainerBuilder $co
         if ($this->annotationsConfigEnabled) {
             $container->register('routing.loader.annotation', AnnotatedRouteControllerLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
+                ->addTag('routing.loader', ['priority' => -10])
                 ->addArgument(new Reference('annotation_reader'));
 
             $container->register('routing.loader.annotation.directory', AnnotationDirectoryLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
-                ->setArguments(array(
+                ->addTag('routing.loader', ['priority' => -10])
+                ->setArguments([
                     new Reference('file_locator'),
                     new Reference('routing.loader.annotation'),
-                ));
+                ]);
 
             $container->register('routing.loader.annotation.file', AnnotationFileLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
-                ->setArguments(array(
+                ->addTag('routing.loader', ['priority' => -10])
+                ->setArguments([
                     new Reference('file_locator'),
                     new Reference('routing.loader.annotation'),
-                ));
+                ]);
         }
     }
 
@@ -761,8 +761,8 @@ private function registerSessionConfiguration(array $config, ContainerBuilder $c
 
         // session storage
         $container->setAlias('session.storage', $config['storage_id'])->setPrivate(true);
-        $options = array('cache_limiter' => '0');
-        foreach (array('name', 'cookie_lifetime', 'cookie_path', 'cookie_domain', 'cookie_secure', 'cookie_httponly', 'use_cookies', 'gc_maxlifetime', 'gc_probability', 'gc_divisor') as $key) {
+        $options = ['cache_limiter' => '0'];
+        foreach (['name', 'cookie_lifetime', 'cookie_path', 'cookie_domain', 'cookie_secure', 'cookie_httponly', 'use_cookies', 'gc_maxlifetime', 'gc_probability', 'gc_divisor'] as $key) {
             if (isset($config[$key])) {
                 $options[$key] = $config[$key];
             }
@@ -804,11 +804,11 @@ private function registerTemplatingConfiguration(array $config, ContainerBuilder
             $logger = new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE);
 
             $container->getDefinition('templating.loader.cache')
-                ->addTag('monolog.logger', array('channel' => 'templating'))
-                ->addMethodCall('setLogger', array($logger));
+                ->addTag('monolog.logger', ['channel' => 'templating'])
+                ->addMethodCall('setLogger', [$logger]);
             $container->getDefinition('templating.loader.chain')
-                ->addTag('monolog.logger', array('channel' => 'templating'))
-                ->addMethodCall('setLogger', array($logger));
+                ->addTag('monolog.logger', ['channel' => 'templating'])
+                ->addMethodCall('setLogger', [$logger]);
         }
 
         if (!empty($config['loaders'])) {
@@ -842,13 +842,13 @@ private function registerTemplatingConfiguration(array $config, ContainerBuilder
         } else {
             $templateEngineDefinition = $container->getDefinition('templating.engine.delegating');
             foreach ($engines as $engine) {
-                $templateEngineDefinition->addMethodCall('addEngine', array($engine));
+                $templateEngineDefinition->addMethodCall('addEngine', [$engine]);
             }
             $container->setAlias('templating', 'templating.engine.delegating')->setPublic(true);
         }
 
         $container->getDefinition('fragment.renderer.hinclude')
-            ->addTag('kernel.fragment_renderer', array('alias' => 'hinclude'))
+            ->addTag('kernel.fragment_renderer', ['alias' => 'hinclude'])
             ->replaceArgument(0, new Reference('templating'))
         ;
 
@@ -892,7 +892,7 @@ private function registerAssetsConfiguration(array $config, ContainerBuilder $co
         $defaultPackage = $this->createPackageDefinition($config['base_path'], $config['base_urls'], $defaultVersion);
         $container->setDefinition('assets._default_package', $defaultPackage);
 
-        $namedPackages = array();
+        $namedPackages = [];
         foreach ($config['packages'] as $name => $package) {
             if (null !== $package['version_strategy']) {
                 $version = new Reference($package['version_strategy']);
@@ -975,13 +975,13 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
         $container->setAlias('translator', 'translator.default')->setPublic(true);
         $container->setAlias('translator.formatter', new Alias($config['formatter'], false));
         $translator = $container->findDefinition('translator.default');
-        $translator->addMethodCall('setFallbackLocales', array($config['fallbacks']));
+        $translator->addMethodCall('setFallbackLocales', [$config['fallbacks']]);
 
         $container->setParameter('translator.logging', $config['logging']);
         $container->setParameter('translator.default_path', $config['default_path']);
 
         // Discover translation directories
-        $dirs = array();
+        $dirs = [];
         if (class_exists('Symfony\Component\Validator\Validation')) {
             $r = new \ReflectionClass('Symfony\Component\Validator\Validation');
 
@@ -1025,7 +1025,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
 
         // Register translation resources
         if ($dirs) {
-            $files = array();
+            $files = [];
             $finder = Finder::create()
                 ->followLinks()
                 ->files()
@@ -1039,7 +1039,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
             foreach ($finder as $file) {
                 list(, $locale) = explode('.', $file->getBasename(), 3);
                 if (!isset($files[$locale])) {
-                    $files[$locale] = array();
+                    $files[$locale] = [];
                 }
 
                 $files[$locale][] = (string) $file;
@@ -1047,7 +1047,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
 
             $options = array_merge(
                 $translator->getArgument(4),
-                array('resource_files' => $files)
+                ['resource_files' => $files]
             );
 
             $translator->replaceArgument(4, $options);
@@ -1074,15 +1074,15 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
 
         $container->setParameter('validator.translation_domain', $config['translation_domain']);
 
-        $files = array('xml' => array(), 'yml' => array());
+        $files = ['xml' => [], 'yml' => []];
         $this->registerValidatorMapping($container, $config, $files);
 
         if (!empty($files['xml'])) {
-            $validatorBuilder->addMethodCall('addXmlMappings', array($files['xml']));
+            $validatorBuilder->addMethodCall('addXmlMappings', [$files['xml']]);
         }
 
         if (!empty($files['yml'])) {
-            $validatorBuilder->addMethodCall('addYamlMappings', array($files['yml']));
+            $validatorBuilder->addMethodCall('addYamlMappings', [$files['yml']]);
         }
 
         $definition = $container->findDefinition('validator.email');
@@ -1093,17 +1093,17 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
                 throw new \LogicException('"enable_annotations" on the validator cannot be set as Annotations support is disabled.');
             }
 
-            $validatorBuilder->addMethodCall('enableAnnotationMapping', array(new Reference('annotation_reader')));
+            $validatorBuilder->addMethodCall('enableAnnotationMapping', [new Reference('annotation_reader')]);
         }
 
         if (array_key_exists('static_method', $config) && $config['static_method']) {
             foreach ($config['static_method'] as $methodName) {
-                $validatorBuilder->addMethodCall('addMethodMapping', array($methodName));
+                $validatorBuilder->addMethodCall('addMethodMapping', [$methodName]);
             }
         }
 
         if (!$container->getParameter('kernel.debug')) {
-            $validatorBuilder->addMethodCall('setMetadataCache', array(new Reference('validator.mapping.cache.symfony')));
+            $validatorBuilder->addMethodCall('setMetadataCache', [new Reference('validator.mapping.cache.symfony')]);
         }
     }
 
@@ -1183,7 +1183,7 @@ private function registerAnnotationsConfiguration(array $config, ContainerBuilde
 
         if (!method_exists(AnnotationRegistry::class, 'registerUniqueLoader')) {
             $container->getDefinition('annotations.dummy_registry')
-                ->setMethodCalls(array(array('registerLoader', array('class_exists'))));
+                ->setMethodCalls([['registerLoader', ['class_exists']]]);
         }
 
         if ('none' !== $config['cache']) {
@@ -1294,7 +1294,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
             $container->removeDefinition('serializer.encoder.yaml');
         }
 
-        $serializerLoaders = array();
+        $serializerLoaders = [];
         if (isset($config['enable_annotations']) && $config['enable_annotations']) {
             if (!$this->annotationsConfigEnabled) {
                 throw new \LogicException('"enable_annotations" on the serializer cannot be set as Annotations support is disabled.');
@@ -1302,7 +1302,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
 
             $annotationLoader = new Definition(
                 'Symfony\Component\Serializer\Mapping\Loader\AnnotationLoader',
-                 array(new Reference('annotation_reader'))
+                 [new Reference('annotation_reader')]
             );
             $annotationLoader->setPublic(false);
 
@@ -1310,7 +1310,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         }
 
         $fileRecorder = function ($extension, $path) use (&$serializerLoaders) {
-            $definition = new Definition(\in_array($extension, array('yaml', 'yml')) ? 'Symfony\Component\Serializer\Mapping\Loader\YamlFileLoader' : 'Symfony\Component\Serializer\Mapping\Loader\XmlFileLoader', array($path));
+            $definition = new Definition(\in_array($extension, ['yaml', 'yml']) ? 'Symfony\Component\Serializer\Mapping\Loader\YamlFileLoader' : 'Symfony\Component\Serializer\Mapping\Loader\XmlFileLoader', [$path]);
             $definition->setPublic(false);
             $serializerLoaders[] = $definition;
         };
@@ -1347,10 +1347,10 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         if (!$container->getParameter('kernel.debug')) {
             $cacheMetadataFactory = new Definition(
                 CacheClassMetadataFactory::class,
-                array(
+                [
                     new Reference('serializer.mapping.cache_class_metadata_factory.inner'),
                     new Reference('serializer.mapping.cache.symfony'),
-                )
+                ]
             );
             $cacheMetadataFactory->setPublic(false);
             $cacheMetadataFactory->setDecoratedService('serializer.mapping.class_metadata_factory');
@@ -1363,11 +1363,11 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         }
 
         if (isset($config['circular_reference_handler']) && $config['circular_reference_handler']) {
-            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setCircularReferenceHandler', array(new Reference($config['circular_reference_handler'])));
+            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setCircularReferenceHandler', [new Reference($config['circular_reference_handler'])]);
         }
 
         if ($config['max_depth_handler'] ?? false) {
-            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setMaxDepthHandler', array(new Reference($config['max_depth_handler'])));
+            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setMaxDepthHandler', [new Reference($config['max_depth_handler'])]);
         }
     }
 
@@ -1382,8 +1382,8 @@ private function registerPropertyInfoConfiguration(ContainerBuilder $container,
         if (interface_exists('phpDocumentor\Reflection\DocBlockFactoryInterface')) {
             $definition = $container->register('property_info.php_doc_extractor', 'Symfony\Component\PropertyInfo\Extractor\PhpDocExtractor');
             $definition->setPrivate(true);
-            $definition->addTag('property_info.description_extractor', array('priority' => -1000));
-            $definition->addTag('property_info.type_extractor', array('priority' => -1001));
+            $definition->addTag('property_info.description_extractor', ['priority' => -1000]);
+            $definition->addTag('property_info.type_extractor', ['priority' => -1001]);
         }
     }
 
@@ -1397,7 +1397,7 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
             }
 
             // Generate stores
-            $storeDefinitions = array();
+            $storeDefinitions = [];
             foreach ($resourceStores as $storeDsn) {
                 $storeDsn = $container->resolveEnvPlaceholders($storeDsn, null, $usedEnvs);
                 switch (true) {
@@ -1411,15 +1411,15 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
                         if (!$container->hasDefinition($connectionDefinitionId = '.lock_connection.'.$container->hash($storeDsn))) {
                             $connectionDefinition = new Definition(\stdClass::class);
                             $connectionDefinition->setPublic(false);
-                            $connectionDefinition->setFactory(array(AbstractAdapter::class, 'createConnection'));
-                            $connectionDefinition->setArguments(array($storeDsn, array('lazy' => true)));
+                            $connectionDefinition->setFactory([AbstractAdapter::class, 'createConnection']);
+                            $connectionDefinition->setArguments([$storeDsn, ['lazy' => true]]);
                             $container->setDefinition($connectionDefinitionId, $connectionDefinition);
                         }
 
                         $storeDefinition = new Definition(StoreInterface::class);
                         $storeDefinition->setPublic(false);
-                        $storeDefinition->setFactory(array(StoreFactory::class, 'createStore'));
-                        $storeDefinition->setArguments(array(new Reference($connectionDefinitionId)));
+                        $storeDefinition->setFactory([StoreFactory::class, 'createStore']);
+                        $storeDefinition->setArguments([new Reference($connectionDefinitionId)]);
 
                         $container->setDefinition($storeDefinitionId = '.lock.'.$resourceName.'.store.'.$container->hash($storeDsn), $storeDefinition);
 
@@ -1449,8 +1449,8 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
             // Generate services for lock instances
             $lockDefinition = new Definition(Lock::class);
             $lockDefinition->setPublic(false);
-            $lockDefinition->setFactory(array(new Reference('lock.'.$resourceName.'.factory'), 'createLock'));
-            $lockDefinition->setArguments(array($resourceName));
+            $lockDefinition->setFactory([new Reference('lock.'.$resourceName.'.factory'), 'createLock']);
+            $lockDefinition->setArguments([$resourceName]);
             $container->setDefinition('lock.'.$resourceName, $lockDefinition);
 
             // provide alias for default resource
@@ -1499,10 +1499,10 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
             $config['default_bus'] = key($config['buses']);
         }
 
-        $defaultMiddleware = array(
-            'before' => array(array('id' => 'logging')),
-            'after' => array(array('id' => 'route_messages'), array('id' => 'call_message_handler')),
-        );
+        $defaultMiddleware = [
+            'before' => [['id' => 'logging']],
+            'after' => [['id' => 'route_messages'], ['id' => 'call_message_handler']],
+        ];
         foreach ($config['buses'] as $busId => $bus) {
             $middleware = $bus['default_middleware'] ? array_merge($defaultMiddleware['before'], $bus['middleware'], $defaultMiddleware['after']) : $bus['middleware'];
 
@@ -1513,7 +1513,7 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
             }
 
             $container->setParameter($busId.'.middleware', $middleware);
-            $container->register($busId, MessageBus::class)->addArgument(array())->addTag('messenger.bus');
+            $container->register($busId, MessageBus::class)->addArgument([])->addTag('messenger.bus');
 
             if ($busId === $config['default_bus']) {
                 $container->setAlias('message_bus', $busId)->setPublic(true);
@@ -1525,24 +1525,24 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
             throw new LogicException(sprintf('The default bus named "%s" is not defined. Define it or change the default bus name.', $config['default_bus']));
         }
 
-        $senderAliases = array();
+        $senderAliases = [];
         foreach ($config['transports'] as $name => $transport) {
             if (0 === strpos($transport['dsn'], 'amqp://') && !$container->hasDefinition('messenger.transport.amqp.factory')) {
                 throw new LogicException('The default AMQP transport is not available. Make sure you have installed and enabled the Serializer component. Try enable it or install it by running "composer require symfony/serializer-pack".');
             }
 
             $transportDefinition = (new Definition(TransportInterface::class))
-                ->setFactory(array(new Reference('messenger.transport_factory'), 'createTransport'))
-                ->setArguments(array($transport['dsn'], $transport['options']))
-                ->addTag('messenger.receiver', array('alias' => $name))
-                ->addTag('messenger.sender', array('alias' => $name))
+                ->setFactory([new Reference('messenger.transport_factory'), 'createTransport'])
+                ->setArguments([$transport['dsn'], $transport['options']])
+                ->addTag('messenger.receiver', ['alias' => $name])
+                ->addTag('messenger.sender', ['alias' => $name])
             ;
             $container->setDefinition($transportId = 'messenger.transport.'.$name, $transportDefinition);
             $senderAliases[$name] = $transportId;
         }
 
-        $messageToSenderIdMapping = array();
-        $messageToSendAndHandleMapping = array();
+        $messageToSenderIdMapping = [];
+        $messageToSendAndHandleMapping = [];
         foreach ($config['routing'] as $message => $messageConfiguration) {
             if ('*' !== $message && !class_exists($message) && !interface_exists($message, false)) {
                 throw new LogicException(sprintf('Messenger routing configuration contains a mistake: message "%s" does not exist. It needs to match an existing class or interface.', $message));
@@ -1552,7 +1552,7 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
                 $senders = array_map(function ($sender) use ($senderAliases) {
                     return new Reference($senderAliases[$sender] ?? $sender);
                 }, $messageConfiguration['senders']);
-                $chainSenderDefinition = new Definition(ChainSender::class, array($senders));
+                $chainSenderDefinition = new Definition(ChainSender::class, [$senders]);
                 $chainSenderDefinition->addTag('messenger.sender');
                 $chainSenderId = '.messenger.chain_sender.'.$message;
                 $container->setDefinition($chainSenderId, $chainSenderDefinition);
@@ -1582,16 +1582,16 @@ private function registerCacheConfiguration(array $config, ContainerBuilder $con
             // Inline any env vars referenced in the parameter
             $container->setParameter('cache.prefix.seed', $container->resolveEnvPlaceholders($container->getParameter('cache.prefix.seed'), true));
         }
-        foreach (array('doctrine', 'psr6', 'redis', 'memcached') as $name) {
+        foreach (['doctrine', 'psr6', 'redis', 'memcached'] as $name) {
             if (isset($config[$name = 'default_'.$name.'_provider'])) {
                 $container->setAlias('cache.'.$name, new Alias(Compiler\CachePoolPass::getServiceProvider($container, $config[$name]), false));
             }
         }
-        foreach (array('app', 'system') as $name) {
-            $config['pools']['cache.'.$name] = array(
+        foreach (['app', 'system'] as $name) {
+            $config['pools']['cache.'.$name] = [
                 'adapter' => $config[$name],
                 'public' => true,
-            );
+            ];
         }
         foreach ($config['pools'] as $name => $pool) {
             $definition = new ChildDefinition($pool['adapter']);
@@ -1607,13 +1607,13 @@ private function registerCacheConfiguration(array $config, ContainerBuilder $con
             $propertyAccessDefinition->setPublic(false);
 
             if (!$container->getParameter('kernel.debug')) {
-                $propertyAccessDefinition->setFactory(array(PropertyAccessor::class, 'createCache'));
-                $propertyAccessDefinition->setArguments(array(null, null, $version, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
-                $propertyAccessDefinition->addTag('cache.pool', array('clearer' => 'cache.system_clearer'));
-                $propertyAccessDefinition->addTag('monolog.logger', array('channel' => 'cache'));
+                $propertyAccessDefinition->setFactory([PropertyAccessor::class, 'createCache']);
+                $propertyAccessDefinition->setArguments([null, null, $version, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)]);
+                $propertyAccessDefinition->addTag('cache.pool', ['clearer' => 'cache.system_clearer']);
+                $propertyAccessDefinition->addTag('monolog.logger', ['channel' => 'cache']);
             } else {
                 $propertyAccessDefinition->setClass(ArrayAdapter::class);
-                $propertyAccessDefinition->setArguments(array(0, false));
+                $propertyAccessDefinition->setArguments([0, false]);
             }
         }
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
index 8a4e8e45bd3f..c4334ceb6a07 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
@@ -62,12 +62,12 @@ abstract protected function configureContainer(ContainerBuilder $c, LoaderInterf
     public function registerContainerConfiguration(LoaderInterface $loader)
     {
         $loader->load(function (ContainerBuilder $container) use ($loader) {
-            $container->loadFromExtension('framework', array(
-                'router' => array(
+            $container->loadFromExtension('framework', [
+                'router' => [
                     'resource' => 'kernel::loadRoutes',
                     'type' => 'service',
-                ),
-            ));
+                ],
+            ]);
 
             if ($this instanceof EventSubscriberInterface) {
                 $container->register('kernel', static::class)
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_help.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_help.html.php
index 6113c00dea9b..93b1f1a0623d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_help.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_help.html.php
@@ -1,3 +1,3 @@
 <?php if (!empty($help)): ?>
-    <p id="<?php echo $view->escape($id); ?>_help" class="help-text"><?php echo $view->escape(false !== $translation_domain ? $view['translator']->trans($help, array(), $translation_domain) : $help); ?></p>
+    <p id="<?php echo $view->escape($id); ?>_help" class="help-text"><?php echo $view->escape(false !== $translation_domain ? $view['translator']->trans($help, [], $translation_domain) : $help); ?></p>
 <?php endif; ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_row.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_row.html.php
index ba81f45b5d57..b6e750aa79f4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_row.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_row.html.php
@@ -1,5 +1,5 @@
 <div>
-    <?php $widgetAttr = empty($help) ? array() : array('attr' => array('aria-describedby' => $id.'_help')); ?>
+    <?php $widgetAttr = empty($help) ? [] : ['attr' => ['aria-describedby' => $id.'_help']]; ?>
     <?php echo $view['form']->label($form); ?>
     <?php echo $view['form']->errors($form); ?>
     <?php echo $view['form']->widget($form, $widgetAttr); ?>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/FormTable/form_row.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/FormTable/form_row.html.php
index 71d606c3d4b4..92b87e1b679b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/FormTable/form_row.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/views/FormTable/form_row.html.php
@@ -1,5 +1,5 @@
 <tr>
-    <?php $widgetAttr = empty($help) ? array() : array('attr' => array('aria-describedby' => $id.'_help')); ?>
+    <?php $widgetAttr = empty($help) ? [] : ['attr' => ['aria-describedby' => $id.'_help']]; ?>
     <td>
         <?php echo $view['form']->label($form); ?>
     </td>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php b/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
index 76c19536f5ad..6bea82e1ef13 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
@@ -32,7 +32,7 @@
 class Router extends BaseRouter implements WarmableInterface, ServiceSubscriberInterface
 {
     private $container;
-    private $collectedParameters = array();
+    private $collectedParameters = [];
     private $paramFetcher;
 
     /**
@@ -43,7 +43,7 @@ class Router extends BaseRouter implements WarmableInterface, ServiceSubscriberI
      * @param ContainerInterface|null $parameters A ContainerInterface instance allowing to fetch parameters
      * @param LoggerInterface|null    $logger
      */
-    public function __construct(ContainerInterface $container, $resource, array $options = array(), RequestContext $context = null, ContainerInterface $parameters = null, LoggerInterface $logger = null)
+    public function __construct(ContainerInterface $container, $resource, array $options = [], RequestContext $context = null, ContainerInterface $parameters = null, LoggerInterface $logger = null)
     {
         $this->container = $container;
         $this->resource = $resource;
@@ -52,9 +52,9 @@ public function __construct(ContainerInterface $container, $resource, array $opt
         $this->setOptions($options);
 
         if ($parameters) {
-            $this->paramFetcher = array($parameters, 'get');
+            $this->paramFetcher = [$parameters, 'get'];
         } elseif ($container instanceof SymfonyContainerInterface) {
-            $this->paramFetcher = array($container, 'getParameter');
+            $this->paramFetcher = [$container, 'getParameter'];
         } else {
             throw new \LogicException(sprintf('You should either pass a "%s" instance or provide the $parameters argument of the "%s" method.', SymfonyContainerInterface::class, __METHOD__));
         }
@@ -112,13 +112,13 @@ private function resolveParameters(RouteCollection $collection)
             $route->setPath($this->resolve($route->getPath()));
             $route->setHost($this->resolve($route->getHost()));
 
-            $schemes = array();
+            $schemes = [];
             foreach ($route->getSchemes() as $scheme) {
                 $schemes = array_merge($schemes, explode('|', $this->resolve($scheme)));
             }
             $route->setSchemes($schemes);
 
-            $methods = array();
+            $methods = [];
             foreach ($route->getMethods() as $method) {
                 $methods = array_merge($methods, explode('|', $this->resolve($method)));
             }
@@ -181,8 +181,8 @@ private function resolve($value)
      */
     public static function getSubscribedServices()
     {
-        return array(
+        return [
             'routing.loader' => LoaderInterface::class,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/RouterCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/RouterCacheWarmerTest.php
index cb3bf1976592..93dbd1a69e22 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/RouterCacheWarmerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/RouterCacheWarmerTest.php
@@ -21,9 +21,9 @@ class RouterCacheWarmerTest extends TestCase
 {
     public function testWarmUpWithWarmebleInterface()
     {
-        $containerMock = $this->getMockBuilder(ContainerInterface::class)->setMethods(array('get', 'has'))->getMock();
+        $containerMock = $this->getMockBuilder(ContainerInterface::class)->setMethods(['get', 'has'])->getMock();
 
-        $routerMock = $this->getMockBuilder(testRouterInterfaceWithWarmebleInterface::class)->setMethods(array('match', 'generate', 'getContext', 'setContext', 'getRouteCollection', 'warmUp'))->getMock();
+        $routerMock = $this->getMockBuilder(testRouterInterfaceWithWarmebleInterface::class)->setMethods(['match', 'generate', 'getContext', 'setContext', 'getRouteCollection', 'warmUp'])->getMock();
         $containerMock->expects($this->any())->method('get')->with('router')->willReturn($routerMock);
         $routerCacheWarmer = new RouterCacheWarmer($containerMock);
 
@@ -38,9 +38,9 @@ public function testWarmUpWithWarmebleInterface()
      */
     public function testWarmUpWithoutWarmebleInterface()
     {
-        $containerMock = $this->getMockBuilder(ContainerInterface::class)->setMethods(array('get', 'has'))->getMock();
+        $containerMock = $this->getMockBuilder(ContainerInterface::class)->setMethods(['get', 'has'])->getMock();
 
-        $routerMock = $this->getMockBuilder(testRouterInterfaceWithoutWarmebleInterface::class)->setMethods(array('match', 'generate', 'getContext', 'setContext', 'getRouteCollection'))->getMock();
+        $routerMock = $this->getMockBuilder(testRouterInterfaceWithoutWarmebleInterface::class)->setMethods(['match', 'generate', 'getContext', 'setContext', 'getRouteCollection'])->getMock();
         $containerMock->expects($this->any())->method('get')->with('router')->willReturn($routerMock);
         $routerCacheWarmer = new RouterCacheWarmer($containerMock);
         $routerCacheWarmer->warmUp('/tmp');
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CachePoolDeleteCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CachePoolDeleteCommandTest.php
index 7ccfa848043a..e22d8542072a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CachePoolDeleteCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/CachePoolDeleteCommandTest.php
@@ -42,7 +42,7 @@ public function testCommandWithValidKey()
             ->willReturn(true);
 
         $tester = $this->getCommandTester($this->getKernel());
-        $tester->execute(array('pool' => 'foo', 'key' => 'bar'));
+        $tester->execute(['pool' => 'foo', 'key' => 'bar']);
 
         $this->assertContains('[OK] Cache item "bar" was successfully deleted.', $tester->getDisplay());
     }
@@ -59,7 +59,7 @@ public function testCommandWithInValidKey()
             ->with('bar');
 
         $tester = $this->getCommandTester($this->getKernel());
-        $tester->execute(array('pool' => 'foo', 'key' => 'bar'));
+        $tester->execute(['pool' => 'foo', 'key' => 'bar']);
 
         $this->assertContains('[NOTE] Cache item "bar" does not exist in cache pool "foo".', $tester->getDisplay());
     }
@@ -83,7 +83,7 @@ public function testCommandDeleteFailed()
         }
 
         $tester = $this->getCommandTester($this->getKernel());
-        $tester->execute(array('pool' => 'foo', 'key' => 'bar'));
+        $tester->execute(['pool' => 'foo', 'key' => 'bar']);
     }
 
     /**
@@ -107,7 +107,7 @@ private function getKernel()
         $kernel
             ->expects($this->once())
             ->method('getBundles')
-            ->willReturn(array());
+            ->willReturn([]);
 
         return $kernel;
     }
@@ -115,7 +115,7 @@ private function getKernel()
     private function getCommandTester(KernelInterface $kernel): CommandTester
     {
         $application = new Application($kernel);
-        $application->add(new CachePoolDeleteCommand(new Psr6CacheClearer(array('foo' => $this->cachePool))));
+        $application->add(new CachePoolDeleteCommand(new Psr6CacheClearer(['foo' => $this->cachePool])));
 
         return new CommandTester($application->find('cache:pool:delete'));
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
index 2506b7102234..4881fcdbdef3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
@@ -26,7 +26,7 @@ class RouterMatchCommandTest extends TestCase
     public function testWithMatchPath()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('path_info' => '/foo', 'foo'), array('decorated' => false));
+        $ret = $tester->execute(['path_info' => '/foo', 'foo'], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Route Name   | foo', $tester->getDisplay());
@@ -35,7 +35,7 @@ public function testWithMatchPath()
     public function testWithNotMatchPath()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('path_info' => '/test', 'foo'), array('decorated' => false));
+        $ret = $tester->execute(['path_info' => '/test', 'foo'], ['decorated' => false]);
 
         $this->assertEquals(1, $ret, 'Returns 1 in case of failure');
         $this->assertContains('None of the routes match the path "/test"', $tester->getDisplay());
@@ -101,7 +101,7 @@ private function getKernel()
         $kernel
             ->expects($this->once())
             ->method('getBundles')
-            ->willReturn(array())
+            ->willReturn([])
         ;
 
         return $kernel;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
index 32306c05df2c..0a06edb9e432 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
@@ -25,24 +25,24 @@ class TranslationDebugCommandTest extends TestCase
 
     public function testDebugMissingMessages()
     {
-        $tester = $this->createCommandTester(array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'en', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester(['foo' => 'foo']);
+        $tester->execute(['locale' => 'en', 'bundle' => 'foo']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
     }
 
     public function testDebugUnusedMessages()
     {
-        $tester = $this->createCommandTester(array(), array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'en', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester([], ['foo' => 'foo']);
+        $tester->execute(['locale' => 'en', 'bundle' => 'foo']);
 
         $this->assertRegExp('/unused/', $tester->getDisplay());
     }
 
     public function testDebugFallbackMessages()
     {
-        $tester = $this->createCommandTester(array(), array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'fr', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester([], ['foo' => 'foo']);
+        $tester->execute(['locale' => 'fr', 'bundle' => 'foo']);
 
         $this->assertRegExp('/fallback/', $tester->getDisplay());
     }
@@ -50,15 +50,15 @@ public function testDebugFallbackMessages()
     public function testNoDefinedMessages()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('locale' => 'fr', 'bundle' => 'test'));
+        $tester->execute(['locale' => 'fr', 'bundle' => 'test']);
 
         $this->assertRegExp('/No defined or extracted messages for locale "fr"/', $tester->getDisplay());
     }
 
     public function testDebugDefaultDirectory()
     {
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'));
-        $tester->execute(array('locale' => 'en'));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar']);
+        $tester->execute(['locale' => 'en']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -72,8 +72,8 @@ public function testDebugDefaultRootDirectory()
         $this->fs->mkdir($this->translationDir.'/translations');
         $this->fs->mkdir($this->translationDir.'/templates');
 
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'));
-        $tester->execute(array('locale' => 'en'));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar']);
+        $tester->execute(['locale' => 'en']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -87,8 +87,8 @@ public function testDebugCustomDirectory()
             ->with($this->equalTo($this->translationDir))
             ->willThrowException(new \InvalidArgumentException());
 
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'), $kernel);
-        $tester->execute(array('locale' => 'en', 'bundle' => $this->translationDir));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar'], $kernel);
+        $tester->execute(['locale' => 'en', 'bundle' => $this->translationDir]);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -105,8 +105,8 @@ public function testDebugInvalidDirectory()
             ->with($this->equalTo('dir'))
             ->willThrowException(new \InvalidArgumentException());
 
-        $tester = $this->createCommandTester(array(), array(), $kernel);
-        $tester->execute(array('locale' => 'en', 'bundle' => 'dir'));
+        $tester = $this->createCommandTester([], [], $kernel);
+        $tester->execute(['locale' => 'en', 'bundle' => 'dir']);
     }
 
     protected function setUp()
@@ -127,7 +127,7 @@ protected function tearDown()
     /**
      * @return CommandTester
      */
-    private function createCommandTester($extractedMessages = array(), $loadedMessages = array(), $kernel = null)
+    private function createCommandTester($extractedMessages = [], $loadedMessages = [], $kernel = null)
     {
         $translator = $this->getMockBuilder('Symfony\Component\Translation\Translator')
             ->disableOriginalConstructor()
@@ -136,7 +136,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $translator
             ->expects($this->any())
             ->method('getFallbackLocales')
-            ->will($this->returnValue(array('en')));
+            ->will($this->returnValue(['en']));
 
         $extractor = $this->getMockBuilder('Symfony\Component\Translation\Extractor\ExtractorInterface')->getMock();
         $extractor
@@ -159,15 +159,15 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
             );
 
         if (null === $kernel) {
-            $returnValues = array(
-                array('foo', $this->getBundle($this->translationDir)),
-                array('test', $this->getBundle('test')),
-            );
+            $returnValues = [
+                ['foo', $this->getBundle($this->translationDir)],
+                ['test', $this->getBundle('test')],
+            ];
             if (HttpKernel\Kernel::VERSION_ID < 40000) {
-                $returnValues = array(
-                    array('foo', true, $this->getBundle($this->translationDir)),
-                    array('test', true, $this->getBundle('test')),
-                );
+                $returnValues = [
+                    ['foo', true, $this->getBundle($this->translationDir)],
+                    ['test', true, $this->getBundle('test')],
+                ];
             }
             $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\KernelInterface')->getMock();
             $kernel
@@ -184,7 +184,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $kernel
             ->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $kernel
             ->expects($this->any())
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
index 65b7b0d6eb49..d7cc78b620ab 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
@@ -25,8 +25,8 @@ class TranslationUpdateCommandTest extends TestCase
 
     public function testDumpMessagesAndClean()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true]);
         $this->assertRegExp('/foo/', $tester->getDisplay());
         $this->assertRegExp('/1 message was successfully extracted/', $tester->getDisplay());
     }
@@ -38,16 +38,16 @@ public function testDumpMessagesAndCleanInRootDirectory()
         $this->fs->mkdir($this->translationDir.'/translations');
         $this->fs->mkdir($this->translationDir.'/templates');
 
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', '--dump-messages' => true, '--clean' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', '--dump-messages' => true, '--clean' => true]);
         $this->assertRegExp('/foo/', $tester->getDisplay());
         $this->assertRegExp('/1 message was successfully extracted/', $tester->getDisplay());
     }
 
     public function testDumpTwoMessagesAndClean()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo', 'bar' => 'bar')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo', 'bar' => 'bar']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true]);
         $this->assertRegExp('/foo/', $tester->getDisplay());
         $this->assertRegExp('/bar/', $tester->getDisplay());
         $this->assertRegExp('/2 messages were successfully extracted/', $tester->getDisplay());
@@ -55,16 +55,16 @@ public function testDumpTwoMessagesAndClean()
 
     public function testDumpMessagesForSpecificDomain()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo'), 'mydomain' => array('bar' => 'bar')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true, '--domain' => 'mydomain'));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo'], 'mydomain' => ['bar' => 'bar']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--dump-messages' => true, '--clean' => true, '--domain' => 'mydomain']);
         $this->assertRegExp('/bar/', $tester->getDisplay());
         $this->assertRegExp('/1 message was successfully extracted/', $tester->getDisplay());
     }
 
     public function testWriteMessages()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--force' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--force' => true]);
         $this->assertRegExp('/Translation files were successfully updated./', $tester->getDisplay());
     }
 
@@ -75,15 +75,15 @@ public function testWriteMessagesInRootDirectory()
         $this->fs->mkdir($this->translationDir.'/translations');
         $this->fs->mkdir($this->translationDir.'/templates');
 
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', '--force' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', '--force' => true]);
         $this->assertRegExp('/Translation files were successfully updated./', $tester->getDisplay());
     }
 
     public function testWriteMessagesForSpecificDomain()
     {
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo'), 'mydomain' => array('bar' => 'bar')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--force' => true, '--domain' => 'mydomain'));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo'], 'mydomain' => ['bar' => 'bar']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', 'bundle' => 'foo', '--force' => true, '--domain' => 'mydomain']);
         $this->assertRegExp('/Translation files were successfully updated./', $tester->getDisplay());
     }
 
@@ -105,7 +105,7 @@ protected function tearDown()
     /**
      * @return CommandTester
      */
-    private function createCommandTester($extractedMessages = array(), $loadedMessages = array(), HttpKernel\KernelInterface $kernel = null)
+    private function createCommandTester($extractedMessages = [], $loadedMessages = [], HttpKernel\KernelInterface $kernel = null)
     {
         $translator = $this->getMockBuilder('Symfony\Component\Translation\Translator')
             ->disableOriginalConstructor()
@@ -114,7 +114,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $translator
             ->expects($this->any())
             ->method('getFallbackLocales')
-            ->will($this->returnValue(array('en')));
+            ->will($this->returnValue(['en']));
 
         $extractor = $this->getMockBuilder('Symfony\Component\Translation\Extractor\ExtractorInterface')->getMock();
         $extractor
@@ -143,19 +143,19 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
             ->expects($this->any())
             ->method('getFormats')
             ->will(
-                $this->returnValue(array('xlf', 'yml'))
+                $this->returnValue(['xlf', 'yml'])
             );
 
         if (null === $kernel) {
-            $returnValues = array(
-                array('foo', $this->getBundle($this->translationDir)),
-                array('test', $this->getBundle('test')),
-            );
+            $returnValues = [
+                ['foo', $this->getBundle($this->translationDir)],
+                ['test', $this->getBundle('test')],
+            ];
             if (HttpKernel\Kernel::VERSION_ID < 40000) {
-                $returnValues = array(
-                    array('foo', true, $this->getBundle($this->translationDir)),
-                    array('test', true, $this->getBundle('test')),
-                );
+                $returnValues = [
+                    ['foo', true, $this->getBundle($this->translationDir)],
+                    ['test', true, $this->getBundle('test')],
+                ];
             }
             $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\KernelInterface')->getMock();
             $kernel
@@ -172,7 +172,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $kernel
             ->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $kernel
             ->expects($this->any())
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/XliffLintCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/XliffLintCommandTest.php
index 2d0e8dcd1bda..1729351a7d59 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/XliffLintCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/XliffLintCommandTest.php
@@ -64,8 +64,8 @@ public function testLintFilesFromBundleDirectory()
     {
         $tester = $this->createCommandTester($this->getKernelAwareApplicationMock());
         $tester->execute(
-            array('filename' => '@AppBundle/Resources'),
-            array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false)
+            ['filename' => '@AppBundle/Resources'],
+            ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]
         );
 
         $this->assertEquals(0, $tester->getStatusCode(), 'Returns 0 in case of success');
@@ -134,7 +134,7 @@ private function getKernelAwareApplicationMock()
     protected function setUp()
     {
         @mkdir(sys_get_temp_dir().'/xliff-lint-test');
-        $this->files = array();
+        $this->files = [];
     }
 
     protected function tearDown()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
index 09f8d2224e22..d3cff58bef91 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/ApplicationTest.php
@@ -197,14 +197,14 @@ public function testRunOnlyWarnsOnUnregistrableCommandAtTheEnd()
         $container = new ContainerBuilder();
         $container->register('event_dispatcher', EventDispatcher::class);
         $container->register(ThrowingCommand::class, ThrowingCommand::class);
-        $container->setParameter('console.command.ids', array(ThrowingCommand::class => ThrowingCommand::class));
+        $container->setParameter('console.command.ids', [ThrowingCommand::class => ThrowingCommand::class]);
 
         $kernel = $this->getMockBuilder(KernelInterface::class)->getMock();
         $kernel
             ->method('getBundles')
-            ->willReturn(array($this->createBundleMock(
-                array((new Command('fine'))->setCode(function (InputInterface $input, OutputInterface $output) { $output->write('fine'); }))
-            )));
+            ->willReturn([$this->createBundleMock(
+                [(new Command('fine'))->setCode(function (I
10000
nputInterface $input, OutputInterface $output) { $output->write('fine'); })]
+            )]);
         $kernel
             ->method('getContainer')
             ->willReturn($container);
@@ -213,7 +213,7 @@ public function testRunOnlyWarnsOnUnregistrableCommandAtTheEnd()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'list'));
+        $tester->run(['command' => 'list']);
 
         $this->assertSame(0, $tester->getStatusCode());
         $display = explode('Lists commands', $tester->getDisplay());
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
index e186395214ee..f789e4a614d2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
@@ -83,13 +83,13 @@ public function getDescribeContainerDefinitionTestData()
     /** @dataProvider getDescribeContainerDefinitionWithArgumentsShownTestData */
     public function testDescribeContainerDefinitionWithArgumentsShown(Definition $definition, $expectedDescription)
     {
-        $this->assertDescription($expectedDescription, $definition, array('show_arguments' => true));
+        $this->assertDescription($expectedDescription, $definition, ['show_arguments' => true]);
     }
 
     public function getDescribeContainerDefinitionWithArgumentsShownTestData()
     {
         $definitions = ObjectsProvider::getContainerDefinitions();
-        $definitionsWithArgs = array();
+        $definitionsWithArgs = [];
 
         foreach ($definitions as $key => $definition) {
             $definitionsWithArgs[str_replace('definition_', 'definition_arguments_', $key)] = $definition;
@@ -110,7 +110,7 @@ public function getDescribeContainerAliasTestData()
     }
 
     /** @dataProvider getDescribeContainerDefinitionWhichIsAnAliasTestData */
-    public function testDescribeContainerDefinitionWhichIsAnAlias(Alias $alias, $expectedDescription, ContainerBuilder $builder, $options = array())
+    public function testDescribeContainerDefinitionWhichIsAnAlias(Alias $alias, $expectedDescription, ContainerBuilder $builder, $options = [])
     {
         $this->assertDescription($expectedDescription, $builder, $options);
     }
@@ -122,7 +122,7 @@ public function getDescribeContainerDefinitionWhichIsAnAliasTestData()
         $builder->setDefinition('.service_2', $builder->getDefinition('.definition_2'));
 
         $aliases = ObjectsProvider::getContainerAliases();
-        $aliasesWithDefinitions = array();
+        $aliasesWithDefinitions = [];
         foreach ($aliases as $name => $alias) {
             $aliasesWithDefinitions[str_replace('alias_', 'alias_with_definition_', $name)] = $alias;
         }
@@ -132,7 +132,7 @@ public function getDescribeContainerDefinitionWhichIsAnAliasTestData()
         foreach ($aliases as $name => $alias) {
             $file = array_pop($data[$i]);
             $data[$i][] = $builder;
-            $data[$i][] = array('id' => $name);
+            $data[$i][] = ['id' => $name];
             $data[$i][] = $file;
             ++$i;
         }
@@ -151,10 +151,10 @@ public function getDescribeContainerParameterTestData()
         $data = $this->getDescriptionTestData(ObjectsProvider::getContainerParameter());
 
         $file = array_pop($data[0]);
-        $data[0][] = array('parameter' => 'database_name');
+        $data[0][] = ['parameter' => 'database_name'];
         $data[0][] = $file;
         $file = array_pop($data[1]);
-        $data[1][] = array('parameter' => 'twig.form.resources');
+        $data[1][] = ['parameter' => 'twig.form.resources'];
         $data[1][] = $file;
 
         return $data;
@@ -186,14 +186,14 @@ abstract protected function getDescriptor();
 
     abstract protected function getFormat();
 
-    private function assertDescription($expectedDescription, $describedObject, array $options = array())
+    private function assertDescription($expectedDescription, $describedObject, array $options = [])
     {
         $options['raw_output'] = true;
         $options['raw_text'] = true;
         $output = new BufferedOutput(BufferedOutput::VERBOSITY_NORMAL, true);
 
         if ('txt' === $this->getFormat()) {
-            $options['output'] = new SymfonyStyle(new ArrayInput(array()), $output);
+            $options['output'] = new SymfonyStyle(new ArrayInput([]), $output);
         }
 
         $this->getDescriptor()->describe($output, $describedObject, $options);
@@ -207,11 +207,11 @@ private function assertDescription($expectedDescription, $describedObject, array
 
     private function getDescriptionTestData(array $objects)
     {
-        $data = array();
+        $data = [];
         foreach ($objects as $name => $object) {
             $file = sprintf('%s.%s', trim($name, '.'), $this->getFormat());
             $description = file_get_contents(__DIR__.'/../../Fixtures/Descriptor/'.$file);
-            $data[] = array($object, $description, $file);
+            $data[] = [$object, $description, $file];
         }
 
         return $data;
@@ -219,20 +219,20 @@ private function getDescriptionTestData(array $objects)
 
     private function getContainerBuilderDescriptionTestData(array $objects)
     {
-        $variations = array(
-            'services' => array('show_hidden' => true),
-            'public' => array('show_hidden' => false),
-            'tag1' => array('show_hidden' => true, 'tag' => 'tag1'),
-            'tags' => array('group_by' => 'tags', 'show_hidden' => true),
-            'arguments' => array('show_hidden' => false, 'show_arguments' => true),
-        );
-
-        $data = array();
+        $variations = [
+            'services' => ['show_hidden' => true],
+            'public' => ['show_hidden' => false],
+            'tag1' => ['show_hidden' => true, 'tag' => 'tag1'],
+            'tags' => ['group_by' => 'tags', 'show_hidden' => true],
+            'arguments' => ['show_hidden' => false, 'show_arguments' => true],
+        ];
+
+        $data = [];
         foreach ($objects as $name => $object) {
             foreach ($variations as $suffix => $options) {
                 $file = sprintf('%s_%s.%s', trim($name, '.'), $suffix, $this->getFormat());
                 $description = file_get_contents(__DIR__.'/../../Fixtures/Descriptor/'.$file);
-                $data[] = array($object, $description, $options, $file);
+                $data[] = [$object, $description, $options, $file];
             }
         }
 
@@ -241,17 +241,17 @@ private function getContainerBuilderDescriptionTestData(array $objects)
 
     private function getEventDispatcherDescriptionTestData(array $objects)
     {
-        $variations = array(
-            'events' => array(),
-            'event1' => array('event' => 'event1'),
-        );
+        $variations = [
+            'events' => [],
+            'event1' => ['event' => 'event1'],
+        ];
 
-        $data = array();
+        $data = [];
         foreach ($objects as $name => $object) {
             foreach ($variations as $suffix => $options) {
                 $file = sprintf('%s_%s.%s', trim($name, '.'), $suffix, $this->getFormat());
                 $description = file_get_contents(__DIR__.'/../../Fixtures/Descriptor/'.$file);
-                $data[] = array($object, $description, $options, $file);
+                $data[] = [$object, $description, $options, $file];
             }
         }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
index 7cb887684fea..2d8e36ecc3a7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
@@ -31,60 +31,60 @@ public static function getRouteCollections()
             $collection1->add($name, $route);
         }
 
-        return array('route_collection_1' => $collection1);
+        return ['route_collection_1' => $collection1];
     }
 
     public static function getRoutes()
     {
-        return array(
+        return [
             'route_1' => new RouteStub(
                 '/hello/{name}',
-                array('name' => 'Joseph'),
-                array('name' => '[a-z]+'),
-                array('opt1' => 'val1', 'opt2' => 'val2'),
+                ['name' => 'Joseph'],
+                ['name' => '[a-z]+'],
+                ['opt1' => 'val1', 'opt2' => 'val2'],
                 'localhost',
-                array('http', 'https'),
-                array('get', 'head')
+                ['http', 'https'],
+                ['get', 'head']
             ),
             'route_2' => new RouteStub(
                 '/name/add',
-                array(),
-                array(),
-                array('opt1' => 'val1', 'opt2' => 'val2'),
+                [],
+                [],
+                ['opt1' => 'val1', 'opt2' => 'val2'],
                 'localhost',
-                array('http', 'https'),
-                array('put', 'post')
+                ['http', 'https'],
+                ['put', 'post']
             ),
-        );
+        ];
     }
 
     public static function getContainerParameters()
     {
-        return array(
-            'parameters_1' => new ParameterBag(array(
+        return [
+            'parameters_1' => new ParameterBag([
                 'integer' => 12,
                 'string' => 'Hello world!',
                 'boolean' => true,
-                'array' => array(12, 'Hello world!', true),
-            )),
-        );
+                'array' => [12, 'Hello world!', true],
+            ]),
+        ];
     }
 
     public static function getContainerParameter()
     {
         $builder = new ContainerBuilder();
         $builder->setParameter('database_name', 'symfony');
-        $builder->setParameter('twig.form.resources', array(
+        $builder->setParameter('twig.form.resources', [
             'bootstrap_3_horizontal_layout.html.twig',
             'bootstrap_3_layout.html.twig',
             'form_div_layout.html.twig',
             'form_table_layout.html.twig',
-        ));
+        ]);
 
-        return array(
+        return [
             'parameter' => $builder,
             'array_parameter' => $builder,
-        );
+        ];
     }
 
     public static function getContainerBuilders()
@@ -93,7 +93,7 @@ public static function getContainerBuilders()
         $builder1->setDefinitions(self::getContainerDefinitions());
         $builder1->setAliases(self::getContainerAliases());
 
-        return array('builder_1' => $builder1);
+        return ['builder_1' => $builder1];
     }
 
     public static function getContainerDefinitions()
@@ -101,7 +101,7 @@ public static function getContainerDefinitions()
         $definition1 = new Definition('Full\\Qualified\\Class1');
         $definition2 = new Definition('Full\\Qualified\\Class2');
 
-        return array(
+        return [
             'definition_1' => $definition1
                 ->setPublic(true)
                 ->setSynthetic(false)
@@ -109,37 +109,37 @@ public static function getContainerDefinitions()
                 ->setAbstract(true)
                 ->addArgument(new Reference('.definition_2'))
                 ->addArgument('%parameter%')
-                ->addArgument(new Definition('inline_service', array('arg1', 'arg2')))
-                ->addArgument(array(
+                ->addArgument(new Definition('inline_service', ['arg1', 'arg2']))
+                ->addArgument([
                     'foo',
                     new Reference('.definition_2'),
                     new Definition('inline_service'),
-                ))
-                ->addArgument(new IteratorArgument(array(
+                ])
+                ->addArgument(new IteratorArgument([
                     new Reference('definition_1'),
                     new Reference('.definition_2'),
-                )))
-                ->setFactory(array('Full\\Qualified\\FactoryClass', 'get')),
+                ]))
+                ->setFactory(['Full\\Qualified\\FactoryClass', 'get']),
             '.definition_2' => $definition2
                 ->setPublic(false)
                 ->setSynthetic(true)
                 ->setFile('/path/to/file')
                 ->setLazy(false)
                 ->setAbstract(false)
-                ->addTag('tag1', array('attr1' => 'val1', 'attr2' => 'val2'))
-                ->addTag('tag1', array('attr3' => 'val3'))
+                ->addTag('tag1', ['attr1' => 'val1', 'attr2' => 'val2'])
+                ->addTag('tag1', ['attr3' => 'val3'])
                 ->addTag('tag2')
-                ->addMethodCall('setMailer', array(new Reference('mailer')))
-                ->setFactory(array(new Reference('factory.service'), 'get')),
-        );
+                ->addMethodCall('setMailer', [new Reference('mailer')])
+                ->setFactory([new Reference('factory.service'), 'get']),
+        ];
     }
 
     public static function getContainerAliases()
     {
-        return array(
+        return [
             'alias_1' => new Alias('service_1', true),
             '.alias_2' => new Alias('.service_2', false),
-        );
+        ];
     }
 
     public static function getEventDispatchers()
@@ -150,21 +150,21 @@ public static function getEventDispatchers()
         $eventDispatcher->addListener('event1', function () { return 'Closure'; }, -1);
         $eventDispatcher->addListener('event2', new CallableClass());
 
-        return array('event_dispatcher_1' => $eventDispatcher);
+        return ['event_dispatcher_1' => $eventDispatcher];
     }
 
     public static function getCallables()
     {
-        return array(
+        return [
             'callable_1' => 'array_key_exists',
-            'callable_2' => array('Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\CallableClass', 'staticMethod'),
-            'callable_3' => array(new CallableClass(), 'method'),
+            'callable_2' => ['Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\CallableClass', 'staticMethod'],
+            'callable_3' => [new CallableClass(), 'method'],
             'callable_4' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\CallableClass::staticMethod',
-            'callable_5' => array('Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\ExtendedCallableClass', 'parent::staticMethod'),
+            'callable_5' => ['Symfony\\Bundle\\FrameworkBundle\\Tests\\Console\\Descriptor\\ExtendedCallableClass', 'parent::staticMethod'],
             'callable_6' => function () { return 'Closure'; },
             'callable_7' => new CallableClass(),
             'callable_from_callable' => \Closure::fromCallable(new CallableClass()),
-        );
+        ];
     }
 }
 
@@ -194,6 +194,6 @@ class RouteStub extends Route
 {
     public function compile()
     {
-        return new CompiledRoute('', '#PATH_REGEX#', array(), array(), '#HOST_REGEX#');
+        return new CompiledRoute('', '#PATH_REGEX#', [], [], '#HOST_REGEX#');
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/AbstractControllerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/AbstractControllerTest.php
index 03b451528d48..ddab6af2b662 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/AbstractControllerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/AbstractControllerTest.php
@@ -30,7 +30,7 @@ protected function createController()
     public function testSubscribedServices()
     {
         $subscribed = AbstractController::getSubscribedServices();
-        $expectedServices = array(
+        $expectedServices = [
             'router' => '?Symfony\\Component\\Routing\\RouterInterface',
             'request_stack' => '?Symfony\\Component\\HttpFoundation\\RequestStack',
             'http_kernel' => '?Symfony\\Component\\HttpKernel\\HttpKernelInterface',
@@ -45,7 +45,7 @@ public function testSubscribedServices()
             'message_bus' => '?Symfony\\Component\\Messenger\\MessageBusInterface',
             'security.token_storage' => '?Symfony\\Component\\Security\\Core\\Authentication\\Token\\Storage\\TokenStorageInterface',
             'security.csrf.token_manager' => '?Symfony\\Component\\Security\\Csrf\\CsrfTokenManagerInterface',
-        );
+        ];
 
         $this->assertEquals($expectedServices, $subscribed, 'Subscribed core services in AbstractController have changed');
     }
@@ -56,7 +56,7 @@ public function testGetParameter()
             $this->markTestSkipped('ContainerBag class does not exist');
         }
 
-        $container = new Container(new FrozenParameterBag(array('foo' => 'bar')));
+        $container = new Container(new FrozenParameterBag(['foo' => 'bar']));
         $container->set('parameter_bag', new ContainerBag($container));
 
         $controller = $this->createController();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerNameParserTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerNameParserTest.php
index 306f40df1530..5e65ae5f13ac 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerNameParserTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerNameParserTest.php
@@ -102,13 +102,13 @@ public function testMissingControllers($name)
     public function getMissingControllersTest()
     {
         // a normal bundle
-        $bundles = array(
-            array('FooBundle:Fake:index'),
-        );
+        $bundles = [
+            ['FooBundle:Fake:index'],
+        ];
 
         // a bundle with children
         if (Kernel::VERSION_ID < 40000) {
-            $bundles[] = array('SensioFooBundle:Fake:index');
+            $bundles[] = ['SensioFooBundle:Fake:index'];
         }
 
         return $bundles;
@@ -138,18 +138,18 @@ public function testInvalidBundleName($bundleName, $suggestedBundleName)
 
     public function getInvalidBundleNameTests()
     {
-        return array(
-            'Alternative will be found using levenshtein' => array('FoodBundle:Default:index', 'FooBundle:Default:index'),
-            'Bundle does not exist at all' => array('CrazyBundle:Default:index', false),
-        );
+        return [
+            'Alternative will be found using levenshtein' => ['FoodBundle:Default:index', 'FooBundle:Default:index'],
+            'Bundle does not exist at all' => ['CrazyBundle:Default:index', false],
+        ];
     }
 
     private function createParser()
     {
-        $bundles = array(
+        $bundles = [
             'SensioCmsFooBundle' => $this->getBundle('TestBundle\Sensio\Cms\FooBundle', 'SensioCmsFooBundle'),
             'FooBundle' => $this->getBundle('TestBundle\FooBundle', 'FooBundle'),
-        );
+        ];
 
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\KernelInterface')->getMock();
         $kernel
@@ -164,11 +164,11 @@ private function createParser()
             }))
         ;
 
-        $bundles = array(
+        $bundles = [
             'SensioCmsFooBundle' => $this->getBundle('TestBundle\Sensio\Cms\FooBundle', 'SensioCmsFooBundle'),
             'FoooooBundle' => $this->getBundle('TestBundle\FooBundle', 'FoooooBundle'),
             'FooBundle' => $this->getBundle('TestBundle\FooBundle', 'FooBundle'),
-        );
+        ];
         $kernel
             ->expects($this->any())
             ->method('getBundles')
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/RedirectControllerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/RedirectControllerTest.php
index ed2cf1e76ce8..1d8f899894da 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/RedirectControllerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/RedirectControllerTest.php
@@ -53,19 +53,19 @@ public function testRoute($permanent, $keepRequestMethod, $keepQueryParams, $ign
 
         $route = 'new-route';
         $url = '/redirect-url';
-        $attributes = array(
+        $attributes = [
             'route' => $route,
             'permanent' => $permanent,
             '_route' => 'current-route',
-            '_route_params' => array(
+            '_route_params' => [
                 'route' => $route,
                 'permanent' => $permanent,
                 'additional-parameter' => 'value',
                 'ignoreAttributes' => $ignoreAttributes,
                 'keepRequestMethod' => $keepRequestMethod,
                 'keepQueryParams' => $keepQueryParams,
-            ),
-        );
+            ],
+        ];
 
         $request->attributes = new ParameterBag($attributes);
 
@@ -86,16 +86,16 @@ public function testRoute($permanent, $keepRequestMethod, $keepQueryParams, $ign
 
     public function provider()
     {
-        return array(
-            array(true, false, false, false, 301, array('additional-parameter' => 'value')),
-            array(false, false, false, false, 302, array('additional-parameter' => 'value')),
-            array(false, false, false, true, 302, array()),
-            array(false, false, false, array('additional-parameter'), 302, array()),
-            array(true, true, false, false, 308, array('additional-parameter' => 'value')),
-            array(false, true, false, false, 307, array('additional-parameter' => 'value')),
-            array(false, true, false, true, 307, array()),
-            array(false, true, true, array('additional-parameter'), 307, array()),
-        );
+        return [
+            [true, false, false, false, 301, ['additional-parameter' => 'value']],
+            [false, false, false, false, 302, ['additional-parameter' => 'value']],
+            [false, false, false, true, 302, []],
+            [false, false, false, ['additional-parameter'], 302, []],
+            [true, true, false, false, 308, ['additional-parameter' => 'value']],
+            [false, true, false, false, 307, ['additional-parameter' => 'value']],
+            [false, true, false, true, 307, []],
+            [false, true, true, ['additional-parameter'], 307, []],
+        ];
     }
 
     public function testEmptyPath()
@@ -161,33 +161,33 @@ public function testUrlRedirectDefaultPorts()
 
     public function urlRedirectProvider()
     {
-        return array(
+        return [
             // Standard ports
-            array('http',  null, null,  'http',  80,   ''),
-            array('http',  80,   null,  'http',  80,   ''),
-            array('https', null, null,  'http',  80,   ''),
-            array('https', 80,   null,  'http',  80,   ''),
+            ['http',  null, null,  'http',  80,   ''],
+            ['http',  80,   null,  'http',  80,   ''],
+            ['https', null, null,  'http',  80,   ''],
+            ['https', 80,   null,  'http',  80,   ''],
 
-            array('http',  null,  null, 'https', 443,  ''),
-            array('http',  null,  443,  'https', 443,  ''),
-            array('https', null,  null, 'https', 443,  ''),
-            array('https', null,  443,  'https', 443,  ''),
+            ['http',  null,  null, 'https', 443,  ''],
+            ['http',  null,  443,  'https', 443,  ''],
+            ['https', null,  null, 'https', 443,  ''],
+            ['https', null,  443,  'https', 443,  ''],
 
             // Non-standard ports
-            array('http',  null,  null, 'http',  8080, ':8080'),
-            array('http',  4080,  null, 'http',  8080, ':4080'),
-            array('http',  80,    null, 'http',  8080, ''),
-            array('https', null,  null, 'http',  8080, ''),
-            array('https', null,  8443, 'http',  8080, ':8443'),
-            array('https', null,  443,  'http',  8080, ''),
-
-            array('https', null,  null, 'https', 8443, ':8443'),
-            array('https', null,  4443, 'https', 8443, ':4443'),
-            array('https', null,  443,  'https', 8443, ''),
-            array('http',  null,  null, 'https', 8443, ''),
-            array('http',  8080,  4443, 'https', 8443, ':8080'),
-            array('http',  80,    4443, 'https', 8443, ''),
-        );
+            ['http',  null,  null, 'http',  8080, ':8080'],
+            ['http',  4080,  null, 'http',  8080, ':4080'],
+            ['http',  80,    null, 'http',  8080, ''],
+            ['https', null,  null, 'http',  8080, ''],
+            ['https', null,  8443, 'http',  8080, ':8443'],
+            ['https', null,  443,  'http',  8080, ''],
+
+            ['https', null,  null, 'https', 8443, ':8443'],
+            ['https', null,  4443, 'https', 8443, ':4443'],
+            ['https', null,  443,  'https', 8443, ''],
+            ['http',  null,  null, 'https', 8443, ''],
+            ['http',  8080,  4443, 'https', 8443, ':8080'],
+            ['http',  80,    4443, 'https', 8443, ''],
+        ];
     }
 
     /**
@@ -209,13 +209,13 @@ public function testUrlRedirect($scheme, $httpPort, $httpsPort, $requestScheme,
 
     public function pathQueryParamsProvider()
     {
-        return array(
-            array('http://www.example.com/base/redirect-path', '/redirect-path',  ''),
-            array('http://www.example.com/base/redirect-path?foo=bar', '/redirect-path?foo=bar',  ''),
-            array('http://www.example.com/base/redirect-path?foo=bar', '/redirect-path', 'foo=bar'),
-            array('http://www.example.com/base/redirect-path?foo=bar&abc=example', '/redirect-path?foo=bar', 'abc=example'),
-            array('http://www.example.com/base/redirect-path?foo=bar&abc=example&baz=def', '/redirect-path?foo=bar', 'abc=example&baz=def'),
-        );
+        return [
+            ['http://www.example.com/base/redirect-path', '/redirect-path',  ''],
+            ['http://www.example.com/base/redirect-path?foo=bar', '/redirect-path?foo=bar',  ''],
+            ['http://www.example.com/base/redirect-path?foo=bar', '/redirect-path', 'foo=bar'],
+            ['http://www.example.com/base/redirect-path?foo=bar&abc=example', '/redirect-path?foo=bar', 'abc=example'],
+            ['http://www.example.com/base/redirect-path?foo=bar&abc=example&baz=def', '/redirect-path?foo=bar', 'abc=example&baz=def'],
+        ];
     }
 
     /**
@@ -244,10 +244,10 @@ public function testRedirectWithQuery()
         $port = 80;
 
         $request = $this->createRequestObject($scheme, $host, $port, $baseUrl, 'base=zaza');
-        $request->query = new ParameterBag(array('base' => 'zaza'));
-        $request->attributes = new ParameterBag(array('_route_params' => array('base2' => 'zaza')));
+        $request->query = new ParameterBag(['base' => 'zaza']);
+        $request->attributes = new ParameterBag(['_route_params' => ['base2' => 'zaza']]);
         $urlGenerator = $this->getMockBuilder(UrlGeneratorInterface::class)->getMock();
-        $urlGenerator->expects($this->once())->method('generate')->will($this->returnValue('/test?base=zaza&base2=zaza'))->with('/test', array('base' => 'zaza', 'base2' => 'zaza'), UrlGeneratorInterface::ABSOLUTE_URL);
+        $urlGenerator->expects($this->once())->method('generate')->will($this->returnValue('/test?base=zaza&base2=zaza'))->with('/test', ['base' => 'zaza', 'base2' => 'zaza'], UrlGeneratorInterface::ABSOLUTE_URL);
 
         $controller = new RedirectController($urlGenerator);
         $this->assertRedirectUrl($controller->redirectAction($request, '/test', false, false, false, true), '/test?base=zaza&base2=zaza');
@@ -261,10 +261,10 @@ public function testRedirectWithQueryWithRouteParamsOveriding()
         $port = 80;
 
         $request = $this->createRequestObject($scheme, $host, $port, $baseUrl, 'base=zaza');
-        $request->query = new ParameterBag(array('base' => 'zaza'));
-        $request->attributes = new ParameterBag(array('_route_params' => array('base' => 'zouzou')));
+        $request->query = new ParameterBag(['base' => 'zaza']);
+        $request->attributes = new ParameterBag(['_route_params' => ['base' => 'zouzou']]);
         $urlGenerator = $this->getMockBuilder(UrlGeneratorInterface::class)->getMock();
-        $urlGenerator->expects($this->once())->method('generate')->will($this->returnValue('/test?base=zouzou'))->with('/test', array('base' => 'zouzou'), UrlGeneratorInterface::ABSOLUTE_URL);
+        $urlGenerator->expects($this->once())->method('generate')->will($this->returnValue('/test?base=zouzou'))->with('/test', ['base' => 'zouzou'], UrlGeneratorInterface::ABSOLUTE_URL);
 
         $controller = new RedirectController($urlGenerator);
         $this->assertRedirectUrl($controller->redirectAction($request, '/test', false, false, false, true), '/test?base=zouzou');
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/TestServiceContainerRefPassesTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/TestServiceContainerRefPassesTest.php
index d63ad4aabcda..70dbe1412ca9 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/TestServiceContainerRefPassesTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/TestServiceContainerRefPassesTest.php
@@ -27,7 +27,7 @@ public function testProcess()
         $container = new ContainerBuilder();
         $container->register('test.private_services_locator', ServiceLocator::class)
             ->setPublic(true)
-            ->addArgument(0, array());
+            ->addArgument(0, []);
 
         $container->addCompilerPass(new TestServiceContainerWeakRefPass(), PassConfig::TYPE_BEFORE_REMOVING, -32);
         $container->addCompilerPass(new TestServiceContainerRealRefPass(), PassConfig::TYPE_AFTER_REMOVING);
@@ -45,12 +45,12 @@ public function testProcess()
 
         $container->compile();
 
-        $expected = array(
+        $expected = [
             'Test\private_used_shared_service' => new ServiceClosureArgument(new Reference('Test\private_used_shared_service')),
             'Test\private_used_non_shared_service' => new ServiceClosureArgument(new Reference('Test\private_used_non_shared_service')),
             'Psr\Container\ContainerInterface' => new ServiceClosureArgument(new Reference('service_container')),
             'Symfony\Component\DependencyInjection\ContainerInterface' => new ServiceClosureArgument(new Reference('service_container')),
-        );
+        ];
         $this->assertEquals($expected, $container->getDefinition('test.private_services_locator')->getArgument(0));
         $this->assertSame($container, $container->get('test.private_services_locator')->get('Psr\Container\ContainerInterface'));
         $this->assertFalse($container->getDefinition('Test\private_used_non_shared_service')->isShared());
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
index 9c67da664285..f1dfc146aa05 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -24,35 +24,35 @@ class ConfigurationTest extends TestCase
     public function testDefaultConfig()
     {
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(true), array(array('secret' => 's3cr3t')));
+        $config = $processor->processConfiguration(new Configuration(true), [['secret' => 's3cr3t']]);
 
         $this->assertEquals(
-            array_merge(array('secret' => 's3cr3t', 'trusted_hosts' => array()), self::getBundleDefaultConfig()),
+            array_merge(['secret' => 's3cr3t', 'trusted_hosts' => []], self::getBundleDefaultConfig()),
             $config
         );
     }
 
     public function testDoNoDuplicateDefaultFormResources()
     {
-        $input = array('templating' => array(
-            'form' => array('resources' => array('FrameworkBundle:Form')),
-            'engines' => array('php'),
-        ));
+        $input = ['templating' => [
+            'form' => ['resources' => ['FrameworkBundle:Form']],
+            'engines' => ['php'],
+        ]];
 
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(true), array($input));
+        $config = $processor->processConfiguration(new Configuration(true), [$input]);
 
-        $this->assertEquals(array('FrameworkBundle:Form'), $config['templating']['form']['resources']);
+        $this->assertEquals(['FrameworkBundle:Form'], $config['templating']['form']['resources']);
     }
 
     public function getTestValidSessionName()
     {
-        return array(
-            array(null),
-            array('PHPSESSID'),
-            array('a&b'),
-            array(',_-!@#$%^*(){}:<>/?'),
-        );
+        return [
+            [null],
+            ['PHPSESSID'],
+            ['a&b'],
+            [',_-!@#$%^*(){}:<>/?'],
+        ];
     }
 
     /**
@@ -64,38 +64,38 @@ public function testInvalidSessionName($sessionName)
         $processor = new Processor();
         $processor->processConfiguration(
             new Configuration(true),
-            array(array('session' => array('name' => $sessionName)))
+            [['session' => ['name' => $sessionName]]]
         );
     }
 
     public function getTestInvalidSessionName()
     {
-        return array(
-            array('a.b'),
-            array('a['),
-            array('a[]'),
-            array('a[b]'),
-            array('a=b'),
-            array('a+b'),
-        );
+        return [
+            ['a.b'],
+            ['a['],
+            ['a[]'],
+            ['a[b]'],
+            ['a=b'],
+            ['a+b'],
+        ];
     }
 
     public function testAssetsCanBeEnabled()
     {
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $config = $processor->processConfiguration($configuration, array(array('assets' => null)));
+        $config = $processor->processConfiguration($configuration, [['assets' => null]]);
 
-        $defaultConfig = array(
+        $defaultConfig = [
             'enabled' => true,
             'version_strategy' => null,
             'version' => null,
             'version_format' => '%%s?%%s',
             'base_path' => '',
-            'base_urls' => array(),
-            'packages' => array(),
+            'base_urls' => [],
+            'packages' => [],
             'json_manifest_path' => null,
-        );
+        ];
 
         $this->assertEquals($defaultConfig, $config['assets']);
     }
@@ -114,119 +114,119 @@ public function testInvalidAssetsConfiguration(array $assetConfig, $expectedMess
 
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $processor->processConfiguration($configuration, array(
-                array(
+        $processor->processConfiguration($configuration, [
+                [
                     'assets' => $assetConfig,
-                ),
-            ));
+                ],
+            ]);
     }
 
     public function provideInvalidAssetConfigurationTests()
     {
         // helper to turn config into embedded package config
         $createPackageConfig = function (array $packageConfig) {
-            return array(
+            return [
                 'base_urls' => '//example.com',
                 'version' => 1,
-                'packages' => array(
+                'packages' => [
                     'foo' => $packageConfig,
-                ),
-            );
+                ],
+            ];
         };
 
-        $config = array(
+        $config = [
             'version' => 1,
             'version_strategy' => 'foo',
-        );
-        yield array($config, 'You cannot use both "version_strategy" and "version" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version_strategy" and "version" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version_strategy" and "version" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version_strategy" and "version" at the same time under "assets" packages.'];
 
-        $config = array(
+        $config = [
             'json_manifest_path' => '/foo.json',
             'version_strategy' => 'foo',
-        );
-        yield array($config, 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets" packages.'];
 
-        $config = array(
+        $config = [
             'json_manifest_path' => '/foo.json',
             'version' => '1',
-        );
-        yield array($config, 'You cannot use both "version" and "json_manifest_path" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version" and "json_manifest_path" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version" and "json_manifest_path" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version" and "json_manifest_path" at the same time under "assets" packages.'];
     }
 
     protected static function getBundleDefaultConfig()
     {
-        return array(
+        return [
             'http_method_override' => true,
             'ide' => null,
             'default_locale' => 'en',
-            'csrf_protection' => array(
+            'csrf_protection' => [
                 'enabled' => false,
-            ),
-            'form' => array(
+            ],
+            'form' => [
                 'enabled' => !class_exists(FullStack::class),
-                'csrf_protection' => array(
+                'csrf_protection' => [
                     'enabled' => null, // defaults to csrf_protection.enabled
                     'field_name' => '_token',
-                ),
-            ),
-            'esi' => array('enabled' => false),
-            'ssi' => array('enabled' => false),
-            'fragments' => array(
+                ],
+            ],
+            'esi' => ['enabled' => false],
+            'ssi' => ['enabled' => false],
+            'fragments' => [
                 'enabled' => false,
                 'path' => '/_fragment',
-            ),
-            'profiler' => array(
+            ],
+            'profiler' => [
                 'enabled' => false,
                 'only_exceptions' => false,
                 'only_master_requests' => false,
                 'dsn' => 'file:%kernel.cache_dir%/profiler',
                 'collect' => true,
-            ),
-            'translator' => array(
+            ],
+            'translator' => [
                 'enabled' => !class_exists(FullStack::class),
-                'fallbacks' => array('en'),
+                'fallbacks' => ['en'],
                 'logging' => false,
                 'formatter' => 'translator.formatter.default',
-                'paths' => array(),
+                'paths' => [],
                 'default_path' => '%kernel.project_dir%/translations',
-            ),
-            'validation' => array(
+            ],
+            'validation' => [
                 'enabled' => !class_exists(FullStack::class),
                 'enable_annotations' => !class_exists(FullStack::class),
-                'static_method' => array('loadValidatorMetadata'),
+                'static_method' => ['loadValidatorMetadata'],
                 'translation_domain' => 'validators',
-                'mapping' => array(
-                    'paths' => array(),
-                ),
-            ),
-            'annotations' => array(
+                'mapping' => [
+                    'paths' => [],
+                ],
+            ],
+            'annotations' => [
                 'cache' => 'php_array',
                 'file_cache_dir' => '%kernel.cache_dir%/annotations',
                 'debug' => true,
                 'enabled' => true,
-            ),
-            'serializer' => array(
+            ],
+            'serializer' => [
                 'enabled' => !class_exists(FullStack::class),
                 'enable_annotations' => !class_exists(FullStack::class),
-                'mapping' => array('paths' => array()),
-            ),
-            'property_access' => array(
+                'mapping' => ['paths' => []],
+            ],
+            'property_access' => [
                 'magic_call' => false,
                 'throw_exception_on_invalid_index' => false,
-            ),
-            'property_info' => array(
+            ],
+            'property_info' => [
                 'enabled' => !class_exists(FullStack::class),
-            ),
-            'router' => array(
+            ],
+            'router' => [
                 'enabled' => false,
                 'http_port' => 80,
                 'https_port' => 443,
                 'strict_requirements' => true,
-            ),
-            'session' => array(
+            ],
+            'session' => [
                 'enabled' => false,
                 'storage_id' => 'session.storage.native',
                 'handler_id' => 'session.handler.native_file',
@@ -234,71 +234,71 @@ protected static function getBundleDefaultConfig()
                 'gc_probability' => 1,
                 'save_path' => '%kernel.cache_dir%/sessions',
                 'metadata_update_threshold' => '0',
-            ),
-            'request' => array(
+            ],
+            'request' => [
                 'enabled' => false,
-                'formats' => array(),
-            ),
-            'templating' => array(
+                'formats' => [],
+            ],
+            'templating' => [
                 'enabled' => false,
                 'hinclude_default_template' => null,
-                'form' => array(
-                    'resources' => array('FrameworkBundle:Form'),
-                ),
-                'engines' => array(),
-                'loaders' => array(),
-            ),
-            'assets' => array(
+                'form' => [
+                    'resources' => ['FrameworkBundle:Form'],
+                ],
+                'engines' => [],
+                'loaders' => [],
+            ],
+            'assets' => [
                 'enabled' => !class_exists(FullStack::class),
                 'version_strategy' => null,
                 'version' => null,
                 'version_format' => '%%s?%%s',
                 'base_path' => '',
-                'base_urls' => array(),
-                'packages' => array(),
+                'base_urls' => [],
+                'packages' => [],
                 'json_manifest_path' => null,
-            ),
-            'cache' => array(
-                'pools' => array(),
+            ],
+            'cache' => [
+                'pools' => [],
                 'app' => 'cache.adapter.filesystem',
                 'system' => 'cache.adapter.system',
                 'directory' => '%kernel.cache_dir%/pools',
                 'default_redis_provider' => 'redis://localhost',
                 'default_memcached_provider' => 'memcached://localhost',
-            ),
-            'workflows' => array(
+            ],
+            'workflows' => [
                 'enabled' => false,
-                'workflows' => array(),
-            ),
-            'php_errors' => array(
+                'workflows' => [],
+            ],
+            'php_errors' => [
                 'log' => true,
                 'throw' => true,
-            ),
-            'web_link' => array(
+            ],
+            'web_link' => [
                 'enabled' => !class_exists(FullStack::class),
-            ),
-            'lock' => array(
+            ],
+            'lock' => [
                 'enabled' => !class_exists(FullStack::class),
-                'resources' => array(
-                    'default' => array(
+                'resources' => [
+                    'default' => [
                         class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock',
-                    ),
-                ),
-            ),
-            'messenger' => array(
+                    ],
+                ],
+            ],
+            'messenger' => [
                 'enabled' => !class_exists(FullStack::class) && interface_exists(MessageBusInterface::class),
-                'routing' => array(),
-                'transports' => array(),
-                'serializer' => array(
+                'routing' => [],
+                'transports' => [],
+                'serializer' => [
                     'enabled' => !class_exists(FullStack::class),
                     'format' => 'json',
-                    'context' => array(),
-                ),
+                    'context' => [],
+                ],
                 'encoder' => 'messenger.transport.serializer',
                 'decoder' => 'messenger.transport.serializer',
                 'default_bus' => null,
-                'buses' => array('messenger.bus.default' => array('default_middleware' => true, 'middleware' => array())),
-            ),
-        );
+                'buses' => ['messenger.bus.default' => ['default_middleware' => true, 'middleware' => []]],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php
index add4179dcc93..8684a569a923 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/full.php
@@ -1,30 +1,30 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'secret' => 's3cr3t',
     'default_locale' => 'fr',
     'csrf_protection' => true,
-    'form' => array(
-        'csrf_protection' => array(
+    'form' => [
+        'csrf_protection' => [
             'field_name' => '_csrf',
-        ),
-    ),
+        ],
+    ],
     'http_method_override' => false,
-    'esi' => array(
+    'esi' => [
         'enabled' => true,
-    ),
-    'ssi' => array(
+    ],
+    'ssi' => [
         'enabled' => true,
-    ),
-    'profiler' => array(
+    ],
+    'profiler' => [
         'only_exceptions' => true,
         'enabled' => false,
-    ),
-    'router' => array(
+    ],
+    'router' => [
         'resource' => '%kernel.project_dir%/config/routing.xml',
         'type' => 'xml',
-    ),
-    'session' => array(
+    ],
+    'session' => [
         'storage_id' => 'session.storage.native',
         'handler_id' => 'session.handler.native_file',
         'name' => '_SYMFONY',
@@ -38,48 +38,48 @@
         'gc_divisor' => 108,
         'gc_probability' => 1,
         'save_path' => '/path/to/sessions',
-    ),
-    'templating' => array(
+    ],
+    'templating' => [
         'cache' => '/path/to/cache',
-        'engines' => array('php', 'twig'),
-        'loader' => array('loader.foo', 'loader.bar'),
-        'form' => array(
-            'resources' => array('theme1', 'theme2'),
-        ),
+        'engines' => ['php', 'twig'],
+        'loader' => ['loader.foo', 'loader.bar'],
+        'form' => [
+            'resources' => ['theme1', 'theme2'],
+        ],
         'hinclude_default_template' => 'global_hinclude_template',
-    ),
-    'assets' => array(
+    ],
+    'assets' => [
         'version' => 'v1',
-    ),
-    'translator' => array(
+    ],
+    'translator' => [
         'enabled' => true,
         'fallback' => 'fr',
-        'paths' => array('%kernel.project_dir%/Fixtures/translations'),
-    ),
-    'validation' => array(
+        'paths' => ['%kernel.project_dir%/Fixtures/translations'],
+    ],
+    'validation' => [
         'enabled' => true,
-    ),
-    'annotations' => array(
+    ],
+    'annotations' => [
         'cache' => 'file',
         'debug' => true,
         'file_cache_dir' => '%kernel.cache_dir%/annotations',
-    ),
-    'serializer' => array(
+    ],
+    'serializer' => [
         'enabled' => true,
         'enable_annotations' => true,
         'name_converter' => 'serializer.name_converter.camel_case_to_snake_case',
         'circular_reference_handler' => 'my.circular.reference.handler',
         'max_depth_handler' => 'my.max.depth.handler',
-    ),
+    ],
     'property_info' => true,
     'ide' => 'file%%link%%format',
-    'request' => array(
-        'formats' => array(
-            'csv' => array(
+    'request' => [
+        'formats' => [
+            'csv' => [
                 'text/csv',
                 'text/plain',
-            ),
+            ],
             'pdf' => 'application/pdf',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger.php
index d8ffe33ade86..d0a234eccc4b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger.php
@@ -3,12 +3,12 @@
 use Symfony\Bundle\FrameworkBundle\Tests\Fixtures\Messenger\BarMessage;
 use Symfony\Bundle\FrameworkBundle\Tests\Fixtures\Messenger\FooMessage;
 
-$container->loadFromExtension('framework', array(
-    'messenger' => array(
+$container->loadFromExtension('framework', [
+    'messenger' => [
         'serializer' => false,
-        'routing' => array(
-            FooMessage::class => array('sender.bar', 'sender.biz'),
+        'routing' => [
+            FooMessage::class => ['sender.bar', 'sender.biz'],
             BarMessage::class => 'sender.foo',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_amqp_transport_no_serializer.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_amqp_transport_no_serializer.php
index f2389d5426ea..0d3772638358 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_amqp_transport_no_serializer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_amqp_transport_no_serializer.php
@@ -1,12 +1,12 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'messenger' => array(
-        'serializer' => array(
+$container->loadFromExtension('framework', [
+    'messenger' => [
+        'serializer' => [
             'enabled' => false,
-        ),
-        'transports' => array(
+        ],
+        'transports' => [
             'default' => 'amqp://localhost/%2f/messages',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_middleware_factory_erroneous_format.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_middleware_factory_erroneous_format.php
index d6cc86bd37d6..cb4ee5e5127b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_middleware_factory_erroneous_format.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_middleware_factory_erroneous_format.php
@@ -1,16 +1,16 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'messenger' => array(
-        'buses' => array(
-            'command_bus' => array(
-                'middleware' => array(
-                    array(
-                        'foo' => array('qux'),
-                        'bar' => array('baz'),
-                    ),
-                ),
-            ),
-        ),
-    ),
-));
+$container->loadFromExtension('framework', [
+    'messenger' => [
+        'buses' => [
+            'command_bus' => [
+                'middleware' => [
+                    [
+                        'foo' => ['qux'],
+                        'bar' => ['baz'],
+                    ],
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_multiple_buses.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_multiple_buses.php
index 5f3b2b23028a..e9580fb94a71 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_multiple_buses.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_multiple_buses.php
@@ -1,24 +1,24 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'messenger' => array(
+$container->loadFromExtension('framework', [
+    'messenger' => [
         'default_bus' => 'messenger.bus.commands',
-        'buses' => array(
+        'buses' => [
             'messenger.bus.commands' => null,
-            'messenger.bus.events' => array(
-                'middleware' => array(
-                    array('with_factory' => array('foo', true, array('bar' => 'baz'))),
+            'messenger.bus.events' => [
+                'middleware' => [
+                    ['with_factory' => ['foo', true, ['bar' => 'baz']]],
                     'allow_no_handler',
-                ),
-            ),
-            'messenger.bus.queries' => array(
+                ],
+            ],
+            'messenger.bus.queries' => [
                 'default_middleware' => false,
-                'middleware' => array(
+                'middleware' => [
                     'route_messages',
                     'allow_no_handler',
                     'call_message_handler',
-                ),
-            ),
-        ),
-    ),
-));
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_routing.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_routing.php
index 0d6af180fd2d..e5433f1929a8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_routing.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_routing.php
@@ -1,19 +1,19 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'serializer' => true,
-    'messenger' => array(
+    'messenger' => [
         'serializer' => true,
-        'routing' => array(
-            'Symfony\Component\Messenger\Tests\Fixtures\DummyMessage' => array('amqp', 'audit'),
-            'Symfony\Component\Messenger\Tests\Fixtures\SecondMessage' => array(
-                'senders' => array('amqp', 'audit'),
+        'routing' => [
+            'Symfony\Component\Messenger\Tests\Fixtures\DummyMessage' => ['amqp', 'audit'],
+            'Symfony\Component\Messenger\Tests\Fixtures\SecondMessage' => [
+                'senders' => ['amqp', 'audit'],
                 'send_and_handle' => true,
-            ),
+            ],
             '*' => 'amqp',
-        ),
-        'transports' => array(
+        ],
+        'transports' => [
             'amqp' => 'amqp://localhost/%2f/messages',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport.php
index 60c4800e3f2f..6e4068adac83 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport.php
@@ -1,11 +1,11 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'serializer' => true,
-    'messenger' => array(
-        'serializer' => array(
+    'messenger' => [
+        'serializer' => [
             'format' => 'csv',
-            'context' => array('enable_max_depth' => true),
-        ),
-    ),
-));
+            'context' => ['enable_max_depth' => true],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport_no_serializer.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport_no_serializer.php
index 92dc5537b995..1370719e8ead 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport_no_serializer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport_no_serializer.php
@@ -1,15 +1,15 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'serializer' => array(
+$container->loadFromExtension('framework', [
+    'serializer' => [
         'enabled' => false,
-    ),
-    'messenger' => array(
-        'serializer' => array(
+    ],
+    'messenger' => [
+        'serializer' => [
             'enabled' => true,
-        ),
-        'transports' => array(
+        ],
+        'transports' => [
             'default' => 'amqp://localhost/%2f/messages',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transports.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transports.php
index 1f802867185d..b5383c157ce5 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transports.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transports.php
@@ -1,15 +1,15 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'serializer' => true,
-    'messenger' => array(
+    'messenger' => [
         'serializer' => true,
-        'transports' => array(
+        'transports' => [
             'default' => 'amqp://localhost/%2f/messages',
-            'customised' => array(
+            'customised' => [
                 'dsn' => 'amqp://localhost/%2f/messages?exchange_name=exchange_name',
-                'options' => array('queue' => array('name' => 'Queue')),
-            ),
-        ),
-    ),
-));
+                'options' => ['queue' => ['name' => 'Queue']],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_log_level.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_log_level.php
index dcf75e4103da..87fdd64d0b6f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_log_level.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/php_errors_log_level.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'php_errors' => array(
+$container->loadFromExtension('framework', [
+    'php_errors' => [
         'log' => 8,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
index 7f96c4e44e69..f68ff35a915a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
@@ -1,10 +1,10 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'serializer' => array(
+$container->loadFromExtension('framework', [
+    'serializer' => [
         'enabled' => false,
-    ),
-    'messenger' => array(
+    ],
+    'messenger' => [
         'serializer' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_email_validation_mode.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_email_validation_mode.php
index 373aa678de19..5100e01e12bb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_email_validation_mode.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_email_validation_mode.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'validation' => array(
+$container->loadFromExtension('framework', [
+    'validation' => [
         'email_validation_mode' => 'html5',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email_and_validation_mode.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email_and_validation_mode.php
index 9e57bc5ce2bc..414b323efede 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email_and_validation_mode.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email_and_validation_mode.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'validation' => array(
+$container->loadFromExtension('framework', [
+    'validation' => [
         'strict_email' => true,
         'email_validation_mode' => 'strict',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email_disabled.php
index d26b56eec389..b5a8b7bba698 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/validation_strict_email_disabled.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'validation' => array(
+$container->loadFromExtension('framework', [
+    'validation' => [
         'strict_email' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows.php
index e8a54059d43c..9d066a21ba36 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/workflows.php
@@ -2,120 +2,120 @@
 
 use Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\FrameworkExtensionTest;
 
-$container->loadFromExtension('framework', array(
-    'workflows' => array(
-        'article' => array(
+$container->loadFromExtension('framework', [
+    'workflows' => [
+        'article' => [
             'type' => 'workflow',
-            'marking_store' => array(
+            'marking_store' => [
                 'type' => 'multiple_state',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
+            ],
             'initial_place' => 'draft',
-            'places' => array(
+            'places' => [
                 'draft',
                 'wait_for_journalist',
                 'approved_by_journalist',
                 'wait_for_spellchecker',
                 'approved_by_spellchecker',
                 'published',
-            ),
-            'transitions' => array(
-                'request_review' => array(
+            ],
+            'transitions' => [
+                'request_review' => [
                     'from' => 'draft',
-                    'to' => array('wait_for_journalist', 'wait_for_spellchecker'),
-                ),
-                'journalist_approval' => array(
+                    'to' => ['wait_for_journalist', 'wait_for_spellchecker'],
+                ],
+                'journalist_approval' => [
                     'from' => 'wait_for_journalist',
                     'to' => 'approved_by_journalist',
-                ),
-                'spellchecker_approval' => array(
+                ],
+                'spellchecker_approval' => [
                     'from' => 'wait_for_spellchecker',
                     'to' => 'approved_by_spellchecker',
-                ),
-          
10000
      'publish' => array(
-                    'from' => array('approved_by_journalist', 'approved_by_spellchecker'),
+                ],
+                'publish' => [
+                    'from' => ['approved_by_journalist', 'approved_by_spellchecker'],
                     'to' => 'published',
-                ),
-            ),
-        ),
-        'pull_request' => array(
-            'marking_store' => array(
+                ],
+            ],
+        ],
+        'pull_request' => [
+            'marking_store' => [
                 'type' => 'single_state',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
+            ],
             'initial_place' => 'start',
-            'metadata' => array(
+            'metadata' => [
                 'title' => 'workflow title',
-            ),
-            'places' => array(
-                'start_name_not_used' => array(
+            ],
+            'places' => [
+                'start_name_not_used' => [
                     'name' => 'start',
-                    'metadata' => array(
+                    'metadata' => [
                         'title' => 'place start title',
-                    ),
-                ),
+                    ],
+                ],
                 'coding' => null,
                 'travis' => null,
                 'review' => null,
                 'merged' => null,
                 'closed' => null,
-            ),
-            'transitions' => array(
-                'submit' => array(
+            ],
+            'transitions' => [
+                'submit' => [
                     'from' => 'start',
                     'to' => 'travis',
-                    'metadata' => array(
+                    'metadata' => [
                         'title' => 'transition submit title',
-                    ),
-                ),
-                'update' => array(
-                    'from' => array('coding', 'travis', 'review'),
+                    ],
+                ],
+                'update' => [
+                    'from' => ['coding', 'travis', 'review'],
                     'to' => 'travis',
-                ),
-                'wait_for_review' => array(
+                ],
+                'wait_for_review' => [
                     'from' => 'travis',
                     'to' => 'review',
-                ),
-                'request_change' => array(
+                ],
+                'request_change' => [
                     'from' => 'review',
                     'to' => 'coding',
-                ),
-                'accept' => array(
+                ],
+                'accept' => [
                     'from' => 'review',
                     'to' => 'merged',
-                ),
-                'reject' => array(
+                ],
+                'reject' => [
                     'from' => 'review',
                     'to' => 'closed',
-                ),
-                'reopen' => array(
+                ],
+                'reopen' => [
                     'from' => 'closed',
                     'to' => 'review',
-                ),
-            ),
-        ),
-        'service_marking_store_workflow' => array(
+                ],
+            ],
+        ],
+        'service_marking_store_workflow' => [
             'type' => 'workflow',
-            'marking_store' => array(
+            'marking_store' => [
                 'service' => 'workflow_service',
-            ),
-            'supports' => array(
+            ],
+            'supports' => [
                 FrameworkExtensionTest::class,
-            ),
-            'places' => array(
-                array('name' => 'first'),
-                array('name' => 'last'),
-            ),
-            'transitions' => array(
-                'go' => array(
+            ],
+            'places' => [
+                ['name' => 'first'],
+                ['name' => 'last'],
+            ],
+            'transitions' => [
+                'go' => [
                     'from' => 'first',
                     'to' => 'last',
-                ),
-            ),
-        ),
-    ),
-));
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index 35da98ef7b0b..3289ac124f7c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -52,7 +52,7 @@
 
 abstract class FrameworkExtensionTest extends TestCase
 {
-    private static $containerCache = array();
+    private static $containerCache = [];
 
     abstract protected function loadFromFile(ContainerBuilder $container, $file);
 
@@ -94,13 +94,13 @@ public function testPropertyAccessCache()
         }
 
         $cache = $container->getDefinition('cache.property_access');
-        $this->assertSame(array(PropertyAccessor::class, 'createCache'), $cache->getFactory(), 'PropertyAccessor::createCache() should be used in non-debug mode');
+        $this->assertSame([PropertyAccessor::class, 'createCache'], $cache->getFactory(), 'PropertyAccessor::createCache() should be used in non-debug mode');
         $this->assertSame(AdapterInterface::class, $cache->getClass());
     }
 
     public function testPropertyAccessCacheWithDebug()
     {
-        $container = $this->createContainerFromFile('property_accessor', array('kernel.debug' => true));
+        $container = $this->createContainerFromFile('property_accessor', ['kernel.debug' => true]);
 
         if (!method_exists(PropertyAccessor::class, 'createCache')) {
             return $this->assertFalse($container->hasDefinition('cache.property_access'));
@@ -202,18 +202,18 @@ public function testWorkflows()
         $workflowDefinition = $container->getDefinition('workflow.article.definition');
 
         $this->assertSame(
-            array(
+            [
                 'draft',
                 'wait_for_journalist',
                 'approved_by_journalist',
                 'wait_for_spellchecker',
                 'approved_by_spellchecker',
                 'published',
-            ),
+            ],
             $workflowDefinition->getArgument(0),
             'Places are passed to the workflow definition'
         );
-        $this->assertSame(array('workflow.definition' => array(array('name' => 'article', 'type' => 'workflow', 'marking_store' => 'multiple_state'))), $workflowDefinition->getTags());
+        $this->assertSame(['workflow.definition' => [['name' => 'article', 'type' => 'workflow', 'marking_store' => 'multiple_state']]], $workflowDefinition->getTags());
         $this->assertCount(4, $workflowDefinition->getArgument(1));
         $this->assertSame('draft', $workflowDefinition->getArgument(2));
 
@@ -224,18 +224,18 @@ public function testWorkflows()
         $stateMachineDefinition = $container->getDefinition('state_machine.pull_request.definition');
 
         $this->assertSame(
-            array(
+            [
                 'start',
                 'coding',
                 'travis',
                 'review',
                 'merged',
                 'closed',
-            ),
+            ],
             $stateMachineDefinition->getArgument(0),
             'Places are passed to the state machine definition'
         );
-        $this->assertSame(array('workflow.definition' => array(array('name' => 'pull_request', 'type' => 'state_machine', 'marking_store' => 'single_state'))), $stateMachineDefinition->getTags());
+        $this->assertSame(['workflow.definition' => [['name' => 'pull_request', 'type' => 'state_machine', 'marking_store' => 'single_state']]], $stateMachineDefinition->getTags());
         $this->assertCount(9, $stateMachineDefinition->getArgument(1));
         $this->assertSame('start', $stateMachineDefinition->getArgument(2));
 
@@ -244,11 +244,11 @@ public function testWorkflows()
         $this->assertSame(Workflow\Metadata\InMemoryMetadataStore::class, $metadataStoreDefinition->getClass());
 
         $workflowMetadata = $metadataStoreDefinition->getArgument(0);
-        $this->assertSame(array('title' => 'workflow title'), $workflowMetadata);
+        $this->assertSame(['title' => 'workflow title'], $workflowMetadata);
 
         $placesMetadata = $metadataStoreDefinition->getArgument(1);
         $this->assertArrayHasKey('start', $placesMetadata);
-        $this->assertSame(array('title' => 'place start title'), $placesMetadata['start']);
+        $this->assertSame(['title' => 'place start title'], $placesMetadata['start']);
 
         $transitionsMetadata = $metadataStoreDefinition->getArgument(2);
         $this->assertSame(\SplObjectStorage::class, $transitionsMetadata->getClass());
@@ -320,60 +320,60 @@ public function testWorkflowMultipleTransitionsWithSameName()
         $this->assertCount(5, $transitions);
 
         $this->assertSame('workflow.article.transition.0', (string) $transitions[0]);
-        $this->assertSame(array(
+        $this->assertSame([
             'request_review',
-            array(
+            [
                 'draft',
-            ),
-            array(
+            ],
+            [
                 'wait_for_journalist', 'wait_for_spellchecker',
-            ),
-        ), $container->getDefinition($transitions[0])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[0])->getArguments());
 
         $this->assertSame('workflow.article.transition.1', (string) $transitions[1]);
-        $this->assertSame(array(
+        $this->assertSame([
             'journalist_approval',
-            array(
+            [
                 'wait_for_journalist',
-            ),
-            array(
+            ],
+            [
                 'approved_by_journalist',
-            ),
-        ), $container->getDefinition($transitions[1])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[1])->getArguments());
 
         $this->assertSame('workflow.article.transition.2', (string) $transitions[2]);
-        $this->assertSame(array(
+        $this->assertSame([
             'spellchecker_approval',
-            array(
+            [
                 'wait_for_spellchecker',
-            ),
-            array(
+            ],
+            [
                 'approved_by_spellchecker',
-            ),
-        ), $container->getDefinition($transitions[2])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[2])->getArguments());
 
         $this->assertSame('workflow.article.transition.3', (string) $transitions[3]);
-        $this->assertSame(array(
+        $this->assertSame([
             'publish',
-            array(
+            [
                 'approved_by_journalist',
                 'approved_by_spellchecker',
-            ),
-            array(
+            ],
+            [
                 'published',
-            ),
-        ), $container->getDefinition($transitions[3])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[3])->getArguments());
 
         $this->assertSame('workflow.article.transition.4', (string) $transitions[4]);
-        $this->assertSame(array(
+        $this->assertSame([
             'publish',
-            array(
+            [
                 'draft',
-            ),
-            array(
+            ],
+            [
                 'published',
-            ),
-        ), $container->getDefinition($transitions[4])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[4])->getArguments());
     }
 
     public function testGuardExpressions()
@@ -384,12 +384,12 @@ public function testGuardExpressions()
         $this->assertTrue($container->hasParameter('workflow.has_guard_listeners'), 'Workflow guard listeners parameter exists');
         $this->assertTrue(true === $container->getParameter('workflow.has_guard_listeners'), 'Workflow guard listeners parameter is enabled');
         $guardDefinition = $container->getDefinition('workflow.article.listener.guard');
-        $this->assertSame(array(
-            array(
+        $this->assertSame([
+            [
                 'event' => 'workflow.article.guard.publish',
                 'method' => 'onTransition',
-            ),
-        ), $guardDefinition->getTag('kernel.event_listener'));
+            ],
+        ], $guardDefinition->getTag('kernel.event_listener'));
         $guardsConfiguration = $guardDefinition->getArgument(0);
         $this->assertTrue(1 === \count($guardsConfiguration), 'Workflow guard configuration contains one element per transition name');
         $transitionGuardExpressions = $guardsConfiguration['workflow.article.guard.publish'];
@@ -468,7 +468,7 @@ public function testRouterRequiresResourceOption()
     {
         $container = $this->createContainer();
         $loader = new FrameworkExtension();
-        $loader->load(array(array('router' => true)), $container);
+        $loader->load([['router' => true]], $container);
     }
 
     public function testSession()
@@ -510,7 +510,7 @@ public function testRequest()
 
         $this->assertTrue($container->hasDefinition('request.add_request_formats_listener'), '->registerRequestConfiguration() loads request.xml');
         $listenerDef = $container->getDefinition('request.add_request_formats_listener');
-        $this->assertEquals(array('csv' => array('text/csv', 'text/plain'), 'pdf' => array('application/pdf')), $listenerDef->getArgument(0));
+        $this->assertEquals(['csv' => ['text/csv', 'text/plain'], 'pdf' => ['application/pdf']], $listenerDef->getArgument(0));
     }
 
     public function testEmptyRequestFormats()
@@ -535,9 +535,9 @@ public function testTemplating()
         $this->assertEquals('%templating.loader.cache.path%', $container->getDefinition('templating.loader.cache')->getArgument(1));
         $this->assertEquals('/path/to/cache', $container->getParameter('templating.loader.cache.path'));
 
-        $this->assertEquals(array('php', 'twig'), $container->getParameter('templating.engines'), '->registerTemplatingConfiguration() sets a templating.engines parameter');
+        $this->assertEquals(['php', 'twig'], $container->getParameter('templating.engines'), '->registerTemplatingConfiguration() sets a templating.engines parameter');
 
-        $this->assertEquals(array('FrameworkBundle:Form', 'theme1', 'theme2'), $container->getParameter('templating.helper.form.resources'), '->registerTemplatingConfiguration() registers the theme and adds the base theme');
+        $this->assertEquals(['FrameworkBundle:Form', 'theme1', 'theme2'], $container->getParameter('templating.helper.form.resources'), '->registerTemplatingConfiguration() registers the theme and adds the base theme');
         $this->assertEquals('global_hinclude_template', $container->getParameter('fragment.renderer.hinclude.global_template'), '->registerTemplatingConfiguration() registers the global hinclude.js template');
     }
 
@@ -555,7 +555,7 @@ public function testAssets()
 
         // default package
         $defaultPackage = $container->getDefinition((string) $packages->getArgument(0));
-        $this->assertUrlPackage($container, $defaultPackage, array('http://cdn.example.com'), 'SomeVersionScheme', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $defaultPackage, ['http://cdn.example.com'], 'SomeVersionScheme', '%%s?version=%%s');
 
         // packages
         $packages = $packages->getArgument(1);
@@ -565,13 +565,13 @@ public function testAssets()
         $this->assertPathPackage($container, $package, '/foo', 'SomeVersionScheme', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['images']);
-        $this->assertUrlPackage($container, $package, array('http://images1.example.com', 'http://images2.example.com'), '1.0.0', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $package, ['http://images1.example.com', 'http://images2.example.com'], '1.0.0', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['foo']);
         $this->assertPathPackage($container, $package, '', '1.0.0', '%%s-%%s');
 
         $package = $container->getDefinition((string) $packages['bar']);
-        $this->assertUrlPackage($container, $package, array('https://bar2.example.com'), 'SomeVersionScheme', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $package, ['https://bar2.example.com'], 'SomeVersionScheme', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['bar_version_strategy']);
         $this->assertEquals('assets.custom_version_strategy', (string) $package->getArgument(1));
@@ -621,17 +621,17 @@ public function testMessengerTransports()
         $this->assertTrue($container->hasDefinition('messenger.transport.default'));
         $this->assertTrue($container->getDefinition('messenger.transport.default')->hasTag('messenger.receiver'));
         $this->assertTrue($container->getDefinition('messenger.transport.default')->hasTag('messenger.sender'));
-        $this->assertEquals(array(array('alias' => 'default')), $container->getDefinition('messenger.transport.default')->getTag('messenger.receiver'));
-        $this->assertEquals(array(array('alias' => 'default')), $container->getDefinition('messenger.transport.default')->getTag('messenger.sender'));
+        $this->assertEquals([['alias' => 'default']], $container->getDefinition('messenger.transport.default')->getTag('messenger.receiver'));
+        $this->assertEquals([['alias' => 'default']], $container->getDefinition('messenger.transport.default')->getTag('messenger.sender'));
 
         $this->assertTrue($container->hasDefinition('messenger.transport.customised'));
         $transportFactory = $container->getDefinition('messenger.transport.customised')->getFactory();
         $transportArguments = $container->getDefinition('messenger.transport.customised')->getArguments();
 
-        $this->assertEquals(array(new Reference('messenger.transport_factory'), 'createTransport'), $transportFactory);
+        $this->assertEquals([new Reference('messenger.transport_factory'), 'createTransport'], $transportFactory);
         $this->assertCount(2, $transportArguments);
         $this->assertSame('amqp://localhost/%2f/messages?exchange_name=exchange_name', $transportArguments[0]);
-        $this->assertSame(array('queue' => array('name' => 'Queue')), $transportArguments[1]);
+        $this->assertSame(['queue' => ['name' => 'Queue']], $transportArguments[1]);
 
         $this->assertTrue($container->hasDefinition('messenger.transport.amqp.factory'));
     }
@@ -642,20 +642,20 @@ public function testMessengerRouting()
         $senderLocatorDefinition = $container->getDefinition('messenger.asynchronous.routing.sender_locator');
         $sendMessageMiddlewareDefinition = $container->getDefinition('messenger.middleware.route_messages');
 
-        $messageToSenderIdsMapping = array(
+        $messageToSenderIdsMapping = [
             DummyMessage::class => '.messenger.chain_sender.'.DummyMessage::class,
             SecondMessage::class => '.messenger.chain_sender.'.SecondMessage::class,
             '*' => 'amqp',
-        );
-        $messageToSendAndHandleMapping = array(
+        ];
+        $messageToSendAndHandleMapping = [
             DummyMessage::class => false,
             SecondMessage::class => true,
             '*' => false,
-        );
+        ];
 
         $this->assertSame($messageToSenderIdsMapping, $senderLocatorDefinition->getArgument(1));
         $this->assertSame($messageToSendAndHandleMapping, $sendMessageMiddlewareDefinition->getArgument(1));
-        $this->assertEquals(array(new Reference('messenger.transport.amqp'), new Reference('audit')), $container->getDefinition('.messenger.chain_sender.'.DummyMessage::class)->getArgument(0));
+        $this->assertEquals([new Reference('messenger.transport.amqp'), new Reference('audit')], $container->getDefinition('.messenger.chain_sender.'.DummyMessage::class)->getArgument(0));
     }
 
     /**
@@ -685,7 +685,7 @@ public function testMessengerTransportConfiguration()
 
         $serializerTransportDefinition = $container->getDefinition('messenger.transport.serializer');
         $this->assertSame('csv', $serializerTransportDefinition->getArgument(1));
-        $this->assertSame(array('enable_max_depth' => true), $serializerTransportDefinition->getArgument(2));
+        $this->assertSame(['enable_max_depth' => true], $serializerTransportDefinition->getArgument(2));
     }
 
     public function testMessengerWithMultipleBuses()
@@ -693,28 +693,28 @@ public function testMessengerWithMultipleBuses()
         $container = $this->createContainerFromFile('messenger_multiple_buses');
 
         $this->assertTrue($container->has('messenger.bus.commands'));
-        $this->assertSame(array(), $container->getDefinition('messenger.bus.commands')->getArgument(0));
-        $this->assertEquals(array(
-            array('id' => 'logging'),
-            array('id' => 'route_messages'),
-            array('id' => 'call_message_handler'),
-        ), $container->getParameter('messenger.bus.commands.middleware'));
+        $this->assertSame([], $container->getDefinition('messenger.bus.commands')->getArgument(0));
+        $this->assertEquals([
+            ['id' => 'logging'],
+            ['id' => 'route_messages'],
+            ['id' => 'call_message_handler'],
+        ], $container->getParameter('messenger.bus.commands.middleware'));
         $this->assertTrue($container->has('messenger.bus.events'));
-        $this->assertSame(array(), $container->getDefinition('messenger.bus.events')->getArgument(0));
-        $this->assertEquals(array(
-            array('id' => 'logging'),
-            array('id' => 'with_factory', 'arguments' => array('foo', true, array('bar' => 'baz'))),
-            array('id' => 'allow_no_handler', 'arguments' => array()),
-            array('id' => 'route_messages'),
-            array('id' => 'call_message_handler'),
-        ), $container->getParameter('messenger.bus.events.middleware'));
+        $this->assertSame([], $container->getDefinition('messenger.bus.events')->getArgument(0));
+        $this->assertEquals([
+            ['id' => 'logging'],
+            ['id' => 'with_factory', 'arguments' => ['foo', true, ['bar' => 'baz']]],
+            ['id' => 'allow_no_handler', 'arguments' => []],
+            ['id' => 'route_messages'],
+            ['id' => 'call_message_handler'],
+        ], $container->getParameter('messenger.bus.events.middleware'));
         $this->assertTrue($container->has('messenger.bus.queries'));
-        $this->assertSame(array(), $container->getDefinition('messenger.bus.queries')->getArgument(0));
-        $this->assertEquals(array(
-            array('id' => 'route_messages', 'arguments' => array()),
-            array('id' => 'allow_no_handler', 'arguments' => array()),
-            array('id' => 'call_message_handler', 'arguments' => array()),
-        ), $container->getParameter('messenger.bus.queries.middleware'));
+        $this->assertSame([], $container->getDefinition('messenger.bus.queries')->getArgument(0));
+        $this->assertEquals([
+            ['id' => 'route_messages', 'arguments' => []],
+            ['id' => 'allow_no_handler', 'arguments' => []],
+            ['id' => 'call_message_handler', 'arguments' => []],
+        ], $container->getParameter('messenger.bus.queries.middleware'));
 
         $this->assertTrue($container->hasAlias('message_bus'));
         $this->assertSame('messenger.bus.commands', (string) $container->getAlias('message_bus'));
@@ -767,7 +767,7 @@ public function testTranslator()
         );
 
         $calls = $container->getDefinition('translator.default')->getMethodCalls();
-        $this->assertEquals(array('fr'), $calls[1][1][0]);
+        $this->assertEquals(['fr'], $calls[1][1][0]);
     }
 
     public function testTranslatorMultipleFallbacks()
@@ -775,7 +775,7 @@ public function testTranslatorMultipleFallbacks()
         $container = $this->createContainerFromFile('translator_fallbacks');
 
         $calls = $container->getDefinition('translator.default')->getMethodCalls();
-        $this->assertEquals(array('en', 'fr'), $calls[1][1][0]);
+        $this->assertEquals(['en', 'fr'], $calls[1][1][0]);
     }
 
     public function testTranslatorHelperIsRegisteredWhenTranslatorIsEnabled()
@@ -799,7 +799,7 @@ public function testTemplatingRequiresAtLeastOneEngine()
     {
         $container = $this->createContainer();
         $loader = new FrameworkExtension();
-        $loader->load(array(array('templating' => null)), $container);
+        $loader->load([['templating' => null]], $container);
     }
 
     public function testValidation()
@@ -808,10 +808,10 @@ public function testValidation()
         $projectDir = $container->getParameter('kernel.project_dir');
 
         $ref = new \ReflectionClass('Symfony\Component\Form\Form');
-        $xmlMappings = array(
+        $xmlMappings = [
             \dirname($ref->getFileName()).'/Resources/config/validation.xml',
             strtr($projectDir.'/config/validator/foo.xml', '/', \DIRECTORY_SEPARATOR),
-        );
+        ];
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
 
@@ -819,33 +819,33 @@ public function testValidation()
 
         $this->assertCount($annotations ? 7 : 6, $calls);
         $this->assertSame('setConstraintValidatorFactory', $calls[0][0]);
-        $this->assertEquals(array(new Reference('validator.validator_factory')), $calls[0][1]);
+        $this->assertEquals([new Reference('validator.validator_factory')], $calls[0][1]);
         $this->assertSame('setTranslator', $calls[1][0]);
-        $this->assertEquals(array(new Reference('translator')), $calls[1][1]);
+        $this->assertEquals([new Reference('translator')], $calls[1][1]);
         $this->assertSame('setTranslationDomain', $calls[2][0]);
-        $this->assertSame(array('%validator.translation_domain%'), $calls[2][1]);
+        $this->assertSame(['%validator.translation_domain%'], $calls[2][1]);
         $this->assertSame('addXmlMappings', $calls[3][0]);
-        $this->assertSame(array($xmlMappings), $calls[3][1]);
+        $this->assertSame([$xmlMappings], $calls[3][1]);
         $i = 3;
         if ($annotations) {
             $this->assertSame('enableAnnotationMapping', $calls[++$i][0]);
         }
         $this->assertSame('addMethodMapping', $calls[++$i][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[$i][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[$i][1]);
         $this->assertSame('setMetadataCache', $calls[++$i][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[$i][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[$i][1]);
     }
 
     public function testValidationService()
     {
-        $container = $this->createContainerFromFile('validation_annotations', array('kernel.charset' => 'UTF-8'), false);
+        $container = $this->createContainerFromFile('validation_annotations', ['kernel.charset' => 'UTF-8'], false);
 
         $this->assertInstanceOf('Symfony\Component\Validator\Validator\ValidatorInterface', $container->get('validator'));
     }
 
     public function testAnnotations()
     {
-        $container = $this->createContainerFromFile('full', array(), true, false);
+        $container = $this->createContainerFromFile('full', [], true, false);
         $container->addCompilerPass(new TestAnnotationsPass());
         $container->compile();
 
@@ -872,11 +872,11 @@ public function testValidationAnnotations()
 
         $this->assertCount(7, $calls);
         $this->assertSame('enableAnnotationMapping', $calls[4][0]);
-        $this->assertEquals(array(new Reference('annotation_reader')), $calls[4][1]);
+        $this->assertEquals([new Reference('annotation_reader')], $calls[4][1]);
         $this->assertSame('addMethodMapping', $calls[5][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[5][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[5][1]);
         $this->assertSame('setMetadataCache', $calls[6][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[6][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[6][1]);
         // no cache this time
     }
 
@@ -884,10 +884,10 @@ public function testValidationPaths()
     {
         require_once __DIR__.'/Fixtures/TestBundle/TestBundle.php';
 
-        $container = $this->createContainerFromFile('validation_annotations', array(
-            'kernel.bundles' => array('TestBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\TestBundle'),
-            'kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle')),
-        ));
+        $container = $this->createContainerFromFile('validation_annotations', [
+            'kernel.bundles' => ['TestBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\TestBundle'],
+            'kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle']],
+        ]);
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
 
@@ -896,9 +896,9 @@ public function testValidationPaths()
         $this->assertSame('addYamlMappings', $calls[4][0]);
         $this->assertSame('enableAnnotationMapping', $calls[5][0]);
         $this->assertSame('addMethodMapping', $calls[6][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[6][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[6][1]);
         $this->assertSame('setMetadataCache', $calls[7][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[7][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[7][1]);
 
         $xmlMappings = $calls[3][1][0];
         $this->assertCount(3, $xmlMappings);
@@ -920,10 +920,10 @@ public function testValidationPathsUsingCustomBundlePath()
     {
         require_once __DIR__.'/Fixtures/CustomPathBundle/src/CustomPathBundle.php';
 
-        $container = $this->createContainerFromFile('validation_annotations', array(
-            'kernel.bundles' => array('CustomPathBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\CustomPathBundle'),
-            'kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/CustomPathBundle')),
-        ));
+        $container = $this->createContainerFromFile('validation_annotations', [
+            'kernel.bundles' => ['CustomPathBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\CustomPathBundle'],
+            'kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/CustomPathBundle']],
+        ]);
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
         $xmlMappings = $calls[3][1][0];
@@ -958,7 +958,7 @@ public function testValidationNoStaticMethod()
             $this->assertSame('enableAnnotationMapping', $calls[++$i][0]);
         }
         $this->assertSame('setMetadataCache', $calls[++$i][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[$i][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[$i][1]);
         // no cache, no annotations, no static methods
     }
 
@@ -1034,19 +1034,19 @@ public function testFormsCanBeEnabledWithoutCsrfProtection()
 
     public function testStopwatchEnabledWithDebugModeEnabled()
     {
-        $container = $this->createContainerFromFile('default_config', array(
+        $container = $this->createContainerFromFile('default_config', [
             'kernel.container_class' => 'foo',
             'kernel.debug' => true,
-        ));
+        ]);
 
         $this->assertTrue($container->has('debug.stopwatch'));
     }
 
     public function testStopwatchEnabledWithDebugModeDisabled()
     {
-        $container = $this->createContainerFromFile('default_config', array(
+        $container = $this->createContainerFromFile('default_config', [
             'kernel.container_class' => 'foo',
-        ));
+        ]);
 
         $this->assertTrue($container->has('debug.stopwatch'));
     }
@@ -1069,8 +1069,8 @@ public function testSerializerEnabled()
         $this->assertNull($container->getDefinition('serializer.mapping.class_metadata_factory')->getArgument(1));
         $this->assertEquals(new Reference('serializer.name_converter.camel_case_to_snake_case'), $container->getDefinition('serializer.normalizer.object')->getArgument(1));
         $this->assertEquals(new Reference('property_info', ContainerBuilder::IGNORE_ON_INVALID_REFERENCE), $container->getDefinition('serializer.normalizer.object')->getArgument(3));
-        $this->assertEquals(array('setCircularReferenceHandler', array(new Reference('my.circular.reference.handler'))), $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[0]);
-        $this->assertEquals(array('setMaxDepthHandler', array(new Reference('my.max.depth.handler'))), $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[1]);
+        $this->assertEquals(['setCircularReferenceHandler', [new Reference('my.circular.reference.handler')]], $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[0]);
+        $this->assertEquals(['setMaxDepthHandler', [new Reference('my.max.depth.handler')]], $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[1]);
     }
 
     public function testRegisterSerializerExtractor()
@@ -1082,7 +1082,7 @@ public function testRegisterSerializerExtractor()
         $this->assertEquals('serializer.mapping.class_metadata_factory', $serializerExtractorDefinition->getArgument(0)->__toString());
         $this->assertFalse($serializerExtractorDefinition->isPublic());
         $tag = $serializerExtractorDefinition->getTag('property_info.list_extractor');
-        $this->assertEquals(array('priority' => -999), $tag[0]);
+        $this->assertEquals(['priority' => -999], $tag[0]);
     }
 
     public function testDataUriNormalizerRegistered()
@@ -1156,25 +1156,25 @@ public function testSerializerCacheActivated()
 
     public function testSerializerCacheDisabled()
     {
-        $container = $this->createContainerFromFile('serializer_enabled', array('kernel.debug' => true, 'kernel.container_class' => __CLASS__));
+        $container = $this->createContainerFromFile('serializer_enabled', ['kernel.debug' => true, 'kernel.container_class' => __CLASS__]);
         $this->assertFalse($container->hasDefinition('serializer.mapping.cache_class_metadata_factory'));
     }
 
     public function testSerializerMapping()
     {
-        $container = $this->createContainerFromFile('serializer_mapping', array('kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle'))));
+        $container = $this->createContainerFromFile('serializer_mapping', ['kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle']]]);
         $projectDir = $container->getParameter('kernel.project_dir');
         $configDir = __DIR__.'/Fixtures/TestBundle/Resources/config';
-        $expectedLoaders = array(
-            new Definition(AnnotationLoader::class, array(new Reference('annotation_reader'))),
-            new Definition(XmlFileLoader::class, array($configDir.'/serialization.xml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serialization.yml')),
-            new Definition(YamlFileLoader::class, array($projectDir.'/config/serializer/foo.yml')),
-            new Definition(XmlFileLoader::class, array($configDir.'/serializer_mapping/files/foo.xml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/files/foo.yml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/serialization.yml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/serialization.yaml')),
-        );
+        $expectedLoaders = [
+            new Definition(AnnotationLoader::class, [new Reference('annotation_reader')]),
+            new Definition(XmlFileLoader::class, [$configDir.'/serialization.xml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serialization.yml']),
+            new Definition(YamlFileLoader::class, [$projectDir.'/config/serializer/foo.yml']),
+            new Definition(XmlFileLoader::class, [$configDir.'/serializer_mapping/files/foo.xml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/files/foo.yml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/serialization.yml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/serialization.yaml']),
+        ];
 
         foreach ($expectedLoaders as $definition) {
             if (is_file($arg = $definition->getArgument(0))) {
@@ -1244,9 +1244,9 @@ public function testPropertyInfoEnabled()
 
     public function testEventDispatcherService()
     {
-        $container = $this->createContainer(array('kernel.charset' => 'UTF-8', 'kernel.secret' => 'secret'));
+        $container = $this->createContainer(['kernel.charset' => 'UTF-8', 'kernel.secret' => 'secret']);
         $container->registerExtension(new FrameworkExtension());
-        $container->getCompilerPassConfig()->setBeforeOptimizationPasses(array(new LoggerPass()));
+        $container->getCompilerPassConfig()->setBeforeOptimizationPasses([new LoggerPass()]);
         $this->loadFromFile($container, 'default_config');
         $container
             ->register('foo', \stdClass::class)
@@ -1297,20 +1297,20 @@ public function testCachePoolServices()
 
     public function testRemovesResourceCheckerConfigCacheFactoryArgumentOnlyIfNoDebug()
     {
-        $container = $this->createContainer(array('kernel.debug' => true));
-        (new FrameworkExtension())->load(array(), $container);
+        $container = $this->createContainer(['kernel.debug' => true]);
+        (new FrameworkExtension())->load([], $container);
         $this->assertCount(1, $container->getDefinition('config_cache_factory')->getArguments());
 
-        $container = $this->createContainer(array('kernel.debug' => false));
-        (new FrameworkExtension())->load(array(), $container);
+        $container = $this->createContainer(['kernel.debug' => false]);
+        (new FrameworkExtension())->load([], $container);
         $this->assertEmpty($container->getDefinition('config_cache_factory')->getArguments());
     }
 
-    protected function createContainer(array $data = array())
+    protected function createContainer(array $data = [])
     {
-        return new ContainerBuilder(new ParameterBag(array_merge(array(
-            'kernel.bundles' => array('FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'),
-            'kernel.bundles_metadata' => array('FrameworkBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle', 'path' => __DIR__.'/../..')),
+        return new ContainerBuilder(new ParameterBag(array_merge([
+            'kernel.bundles' => ['FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'],
+            'kernel.bundles_metadata' => ['FrameworkBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle', 'path' => __DIR__.'/../..']],
             'kernel.cache_dir' => __DIR__,
             'kernel.project_dir' => __DIR__,
             'kernel.debug' => false,
@@ -1321,10 +1321,10 @@ protected function createContainer(array $data = array())
             'container.build_hash' => 'Abc1234',
             'container.build_id' => hash('crc32', 'Abc123423456789'),
             'container.build_time' => 23456789,
-        ), $data)));
+        ], $data)));
     }
 
-    protected function createContainerFromFile($file, $data = array(), $resetCompilerPasses = true, $compile = true)
+    protected function createContainerFromFile($file, $data = [], $resetCompilerPasses = true, $compile = true)
     {
         $cacheKey = md5(\get_class($this).$file.serialize($data));
         if ($compile && isset(self::$containerCache[$cacheKey])) {
@@ -1335,12 +1335,12 @@ protected function createContainerFromFile($file, $data = array(), $resetCompile
         $this->loadFromFile($container, $file);
 
         if ($resetCompilerPasses) {
-            $container->getCompilerPassConfig()->setOptimizationPasses(array());
-            $container->getCompilerPassConfig()->setRemovingPasses(array());
+            $container->getCompilerPassConfig()->setOptimizationPasses([]);
+            $container->getCompilerPassConfig()->setRemovingPasses([]);
         }
-        $container->getCompilerPassConfig()->setBeforeOptimizationPasses(array(new LoggerPass()));
-        $container->getCompilerPassConfig()->setBeforeRemovingPasses(array(new AddConstraintValidatorsPass(), new TranslatorPass('translator.default', 'translation.reader')));
-        $container->getCompilerPassConfig()->setAfterRemovingPasses(array(new AddAnnotationsCachedReaderPass()));
+        $container->getCompilerPassConfig()->setBeforeOptimizationPasses([new LoggerPass()]);
+        $container->getCompilerPassConfig()->setBeforeRemovingPasses([new AddConstraintValidatorsPass(), new TranslatorPass('translator.default', 'translation.reader')]);
+        $container->getCompilerPassConfig()->setAfterRemovingPasses([new AddAnnotationsCachedReaderPass()]);
 
         if (!$compile) {
             return $container;
@@ -1350,15 +1350,15 @@ protected function createContainerFromFile($file, $data = array(), $resetCompile
         return self::$containerCache[$cacheKey] = $container;
     }
 
-    protected function createContainerFromClosure($closure, $data = array())
+    protected function createContainerFromClosure($closure, $data = [])
     {
         $container = $this->createContainer($data);
         $container->registerExtension(new FrameworkExtension());
         $loader = new ClosureLoader($container);
         $loader->load($closure);
 
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         return $container;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates-empty.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates-empty.php
index 9ba223074c68..2f147d07214e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates-empty.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates-empty.php
@@ -1,2 +1,2 @@
-<?php return array (
-);
+<?php return  [
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates.php
index 0263003e051c..025b0e558a10 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates.php
@@ -1,3 +1,3 @@
-<?php return array (
+<?php return  [
   'bundle:controller:name.format.engine' => __DIR__.'/../path/to/template.html.twig',
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AutowiringTypesTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AutowiringTypesTest.php
index 76f0dd6bed8f..43f91f521340 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AutowiringTypesTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/AutowiringTypesTest.php
@@ -23,7 +23,7 @@ class AutowiringTypesTest extends WebTestCase
 {
     public function testAnnotationReaderAutowiring()
     {
-        static::bootKernel(array('root_config' => 'no_annotations_cache.yml', 'environment' => 'no_annotations_cache'));
+        static::bootKernel(['root_config' => 'no_annotations_cache.yml', 'environment' => 'no_annotations_cache']);
 
         $annotationReader = static::$container->get('test.autowiring_types.autowired_services')->getAnnotationReader();
         $this->assertInstanceOf(AnnotationReader::class, $annotationReader);
@@ -48,12 +48,12 @@ public function testTemplatingAutowiring()
 
     public function testEventDispatcherAutowiring()
     {
-        static::bootKernel(array('debug' => false));
+        static::bootKernel(['debug' => false]);
 
         $autowiredServices = static::$container->get('test.autowiring_types.autowired_services');
         $this->assertInstanceOf(EventDispatcher::class, $autowiredServices->getDispatcher(), 'The event_dispatcher service should be injected if the debug is not enabled');
 
-        static::bootKernel(array('debug' => true));
+        static::bootKernel(['debug' => true]);
 
         $autowiredServices = static::$container->get('test.autowiring_types.autowired_services');
         $this->assertInstanceOf(TraceableEventDispatcher::class, $autowiredServices->getDispatcher(), 'The debug.event_dispatcher service should be injected if the debug is enabled');
@@ -67,8 +67,8 @@ public function testCacheAutowiring()
         $this->assertInstanceOf(FilesystemAdapter::class, $autowiredServices->getCachePool());
     }
 
-    protected static function createKernel(array $options = array())
+    protected static function createKernel(array $options = [])
     {
-        return parent::createKernel(array('test_case' => 'AutowiringTypes') + $options);
+        return parent::createKernel(['test_case' => 'AutowiringTypes'] + $options);
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestServiceResolutionController.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestServiceResolutionController.php
index 707edbc6dd8b..df8a17caa810 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestServiceResolutionController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/TestBundle/Controller/SubRequestServiceResolutionController.php
@@ -25,7 +25,7 @@ public function indexAction()
     {
         $request = $this->container->get('request_stack')->getCurrentRequest();
         $path['_controller'] = self::class.'::fragmentAction';
-        $subRequest = $request->duplicate(array(), null, $path);
+        $subRequest = $request->duplicate([], null, $path);
 
         return $this->container->get('http_kernel')->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
index 3a7754152120..af57ec9ad9ec 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
@@ -22,13 +22,13 @@ class CachePoolClearCommandTest extends WebTestCase
 {
     protected function setUp()
     {
-        static::bootKernel(array('test_case' => 'CachePoolClear', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'CachePoolClear', 'root_config' => 'config.yml']);
     }
 
     public function testClearPrivatePool()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('pools' => array('cache.private_pool')), array('decorated' => false));
+        $tester->execute(['pools' => ['cache.private_pool']], ['decorated' => false]);
 
         $this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
         $this->assertContains('Clearing cache pool: cache.private_pool', $tester->getDisplay());
@@ -38,7 +38,7 @@ public function testClearPrivatePool()
     public function testClearPublicPool()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('pools' => array('cache.public_pool')), array('decorated' => false));
+        $tester->execute(['pools' => ['cache.public_pool']], ['decorated' => false]);
 
         $this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
         $this->assertContains('Clearing cache pool: cache.public_pool', $tester->getDisplay());
@@ -48,7 +48,7 @@ public function testClearPublicPool()
     public function testClearPoolWithCustomClearer()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('pools' => array('cache.pool_with_clearer')), array('decorated' => false));
+        $tester->execute(['pools' => ['cache.pool_with_clearer']], ['decorated' => false]);
 
         $this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
         $this->assertContains('Clearing cache pool: cache.pool_with_clearer', $tester->getDisplay());
@@ -58,7 +58,7 @@ public function testClearPoolWithCustomClearer()
     public function testCallClearer()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('pools' => array('cache.app_clearer')), array('decorated' => false));
+        $tester->execute(['pools' => ['cache.app_clearer']], ['decorated' => false]);
 
         $this->assertSame(0, $tester->getStatusCode(), 'cache:pool:clear exits with 0 in case of success');
         $this->assertContains('Calling cache clearer: cache.app_clearer', $tester->getDisplay());
@@ -72,7 +72,7 @@ public function testCallClearer()
     public function testClearUnexistingPool()
     {
         $this->createCommandTester()
-            ->execute(array('pools' => array('unknown_pool')), array('decorated' => false));
+            ->execute(['pools' => ['unknown_pool']], ['decorated' => false]);
     }
 
     private function createCommandTester()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
index 21d9b1ca3b27..62ecdeee1992 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
@@ -21,7 +21,7 @@ class ContainerDebugCommandTest extends WebTestCase
 {
     public function testDumpContainerIfNotExists()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
@@ -29,37 +29,37 @@ public function testDumpContainerIfNotExists()
         @unlink(static::$container->getParameter('debug.container.dump'));
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:container'));
+        $tester->run(['command' => 'debug:container']);
 
         $this->assertFileExists(static::$container->getParameter('debug.container.dump'));
     }
 
     public function testNoDebug()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml', 'debug' => false));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml', 'debug' => false]);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:container'));
+        $tester->run(['command' => 'debug:container']);
 
         $this->assertContains('public', $tester->getDisplay());
     }
 
     public function testPrivateAlias()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:container', '--show-hidden' => true));
+        $tester->run(['command' => 'debug:container', '--show-hidden' => true]);
         $this->assertNotContains('public', $tester->getDisplay());
         $this->assertNotContains('private_alias', $tester->getDisplay());
 
-        $tester->run(array('command' => 'debug:container'));
+        $tester->run(['command' => 'debug:container']);
         $this->assertContains('public', $tester->getDisplay());
         $this->assertContains('private_alias', $tester->getDisplay());
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/PropertyInfoTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/PropertyInfoTest.php
index 6adde224275b..61669e90adbc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/PropertyInfoTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/PropertyInfoTest.php
@@ -17,9 +17,9 @@ class PropertyInfoTest extends WebTestCase
 {
     public function testPhpDocPriority()
     {
-        static::bootKernel(array('test_case' => 'Serializer'));
+        static::bootKernel(['test_case' => 'Serializer']);
 
-        $this->assertEquals(array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_INT))), static::$container->get('property_info')->getTypes('Symfony\Bundle\FrameworkBundle\Tests\Functional\Dummy', 'codes'));
+        $this->assertEquals([new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_INT))], static::$container->get('property_info')->getTypes('Symfony\Bundle\FrameworkBundle\Tests\Functional\Dummy', 'codes'));
     }
 }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/RouterDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/RouterDebugCommandTest.php
index 26f6916e9fc5..73f84f842f83 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/RouterDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/RouterDebugCommandTest.php
@@ -23,14 +23,14 @@ class RouterDebugCommandTest extends WebTestCase
 
     protected function setUp()
     {
-        $kernel = static::createKernel(array('test_case' => 'RouterDebug', 'root_config' => 'config.yml'));
+        $kernel = static::createKernel(['test_case' => 'RouterDebug', 'root_config' => 'config.yml']);
         $this->application = new Application($kernel);
     }
 
     public function testDumpAllRoutes()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array());
+        $ret = $tester->execute([]);
         $display = $tester->getDisplay();
 
         $this->assertSame(0, $ret, 'Returns 0 in case of success');
@@ -42,7 +42,7 @@ public function testDumpAllRoutes()
     public function testDumpOneRoute()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('name' => 'routerdebug_session_welcome'));
+        $ret = $tester->execute(['name' => 'routerdebug_session_welcome']);
 
         $this->assertSame(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('routerdebug_session_welcome', $tester->getDisplay());
@@ -52,8 +52,8 @@ public function testDumpOneRoute()
     public function testSearchMultipleRoutes()
     {
         $tester = $this->createCommandTester();
-        $tester->setInputs(array(3));
-        $ret = $tester->execute(array('name' => 'routerdebug'), array('interactive' => true));
+        $tester->setInputs([3]);
+        $ret = $tester->execute(['name' => 'routerdebug'], ['interactive' => true]);
 
         $this->assertSame(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Select one of the matching routes:', $tester->getDisplay());
@@ -68,7 +68,7 @@ public function testSearchMultipleRoutes()
     public function testSearchWithThrow()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('name' => 'gerard'), array('interactive' => true));
+        $tester->execute(['name' => 'gerard'], ['interactive' => true]);
     }
 
     private function createCommandTester(): CommandTester
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SerializerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SerializerTest.php
index bdcf462baea2..0a92fd2f91ce 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SerializerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/SerializerTest.php
@@ -18,7 +18,7 @@ class SerializerTest extends WebTestCase
 {
     public function testDeserializeArrayOfObject()
     {
-        static::bootKernel(array('test_case' => 'Serializer'));
+        static::bootKernel(['test_case' => 'Serializer']);
 
         $result = static::$container->get('serializer')->deserialize('{"bars": [{"id": 1}, {"id": 2}]}', Foo::class, 'json');
 
@@ -28,7 +28,7 @@ public function testDeserializeArrayOfObject()
         $bar2->id = 2;
 
         $expected = new Foo();
-        $expected->bars = array($bar1, $bar2);
+        $expected->bars = [$bar1, $bar2];
 
         $this->assertEquals($expected, $result);
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/TestServiceContainerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/TestServiceContainerTest.php
index b50c3e1f0b71..baa12ab2d167 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/TestServiceContainerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/TestServiceContainerTest.php
@@ -22,7 +22,7 @@ class TestServiceContainerTest extends WebTestCase
 {
     public function testThatPrivateServicesAreUnavailableIfTestConfigIsDisabled()
     {
-        static::bootKernel(array('test_case' => 'TestServiceContainer', 'root_config' => 'test_disabled.yml', 'environment' => 'test_disabled'));
+        static::bootKernel(['test_case' => 'TestServiceContainer', 'root_config' => 'test_disabled.yml', 'environment' => 'test_disabled']);
 
         $this->assertInstanceOf(ContainerInterface::class, static::$container);
         $this->assertNotInstanceOf(TestContainer::class, static::$container);
@@ -35,7 +35,7 @@ public function testThatPrivateServicesAreUnavailableIfTestConfigIsDisabled()
 
     public function testThatPrivateServicesAreAvailableIfTestConfigIsEnabled()
     {
-        static::bootKernel(array('test_case' => 'TestServiceContainer'));
+        static::bootKernel(['test_case' => 'TestServiceContainer']);
 
         $this->assertInstanceOf(TestContainer::class, static::$container);
         $this->assertTrue(static::$container->has(PublicService::class));
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Resources/views/fragment.html.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Resources/views/fragment.html.php
index ae574bce9954..0e89a5b36ccc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Resources/views/fragment.html.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Resources/views/fragment.html.php
@@ -1,13 +1,13 @@
-<?php echo $this->get('actions')->render($this->get('actions')->controller('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\Controller\FragmentController::inlinedAction', array(
-            'options' => array(
+<?php echo $this->get('actions')->render($this->get('actions')->controller('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\Controller\FragmentController::inlinedAction', [
+            'options' => [
                 'bar' => $bar,
                 'eleven' => 11,
-            ),
-        )));
+            ],
+        ]));
 ?>--<?php
-        echo $this->get('actions')->render($this->get('actions')->controller('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\Controller\FragmentController::customformatAction', array('_format' => 'html')));
+        echo $this->get('actions')->render($this->get('actions')->controller('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\Controller\FragmentController::customformatAction', ['_format' => 'html']));
 ?>--<?php
-        echo $this->get('actions')->render($this->get('actions')->controller('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\Controller\FragmentController::customlocaleAction', array('_locale' => 'es')));
+        echo $this->get('actions')->render($this->get('actions')->controller('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\Controller\FragmentController::customlocaleAction', ['_locale' => 'es']));
 ?>--<?php
         $app->getRequest()->setLocale('fr');
         echo $this->get('actions')->render($this->get('actions')->controller('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\Controller\FragmentController::forwardlocaleAction'));
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/RouterDebug/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/RouterDebug/bundles.php
index 422ffc917fc9..15ff182c6fed 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/RouterDebug/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/RouterDebug/bundles.php
@@ -12,7 +12,7 @@
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\TestBundle\TestBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new TestBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/TestServiceContainer/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/TestServiceContainer/bundles.php
index 144db9023603..13ab9fddee4a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/TestServiceContainer/bundles.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/TestServiceContainer/bundles.php
@@ -11,6 +11,6 @@
 
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 
-return array(
+return [
     new FrameworkBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/DelegatingLoaderTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/DelegatingLoaderTest.php
index 70944fcac87c..cb4f7077f5dc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/DelegatingLoaderTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/DelegatingLoaderTest.php
@@ -48,9 +48,9 @@ public function testLoad()
             ->willReturn($loader);
 
         $routeCollection = new RouteCollection();
-        $routeCollection->add('foo', new Route('/', array('_controller' => 'foo:bar:baz')));
-        $routeCollection->add('bar', new Route('/', array('_controller' => 'foo::baz')));
-        $routeCollection->add('baz', new Route('/', array('_controller' => 'foo:baz')));
+        $routeCollection->add('foo', new Route('/', ['_controller' => 'foo:bar:baz']));
+        $routeCollection->add('bar', new Route('/', ['_controller' => 'foo::baz']));
+        $routeCollection->add('baz', new Route('/', ['_controller' => 'foo:baz']));
 
         $loader->expects($this->once())
             ->method('load')
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
index 63bb55e50694..329f1e7cbaf7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/RouterTest.php
@@ -45,15 +45,15 @@ public function testGenerateWithServiceParam()
         ));
 
         $sc = $this->getPsr11ServiceContainer($routes);
-        $parameters = $this->getParameterBag(array(
+        $parameters = $this->getParameterBag([
             'locale' => 'es',
             'foo' => 'bar',
-        ));
+        ]);
 
-        $router = new Router($sc, 'foo', array(), null, $parameters);
+        $router = new Router($sc, 'foo', [], null, $parameters);
 
-        $this->assertSame('/en', $router->generate('foo', array('_locale' => 'en')));
-        $this->assertSame('/', $router->generate('foo', array('_locale' => 'es')));
+        $this->assert
10000
Same('/en', $router->generate('foo', ['_locale' => 'en']));
+        $this->assertSame('/', $router->generate('foo', ['_locale' => 'es']));
         $this->assertSame('"bar" == "bar"', $router->getRouteCollection()->get('foo')->getCondition());
     }
 
@@ -63,12 +63,12 @@ public function testGenerateWithServiceParamWithSfContainer()
 
         $routes->add('foo', new Route(
             ' /{_locale}',
-            array(
+            [
                 '_locale' => '%locale%',
-            ),
-            array(
+            ],
+            [
                 '_locale' => 'en|es',
-            ), array(), '', array(), array(), '"%foo%" == "bar"'
+            ], [], '', [], [], '"%foo%" == "bar"'
         ));
 
         $sc = $this->getServiceContainer($routes);
@@ -101,24 +101,24 @@ public function testDefaultsPlaceholders()
 
         $sc = $this->getPsr11ServiceContainer($routes);
 
-        $parameters = $this->getParameterBag(array(
+        $parameters = $this->getParameterBag([
             'parameter.foo' => 'foo',
             'parameter.bar' => 'bar',
             'parameter' => 'boo',
             'bee_parameter' => 'foo_bee',
-        ));
+        ]);
 
-        $router = new Router($sc, 'foo', array(), null, $parameters);
+        $router = new Router($sc, 'foo', [], null, $parameters);
         $route = $router->getRouteCollection()->get('foo');
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'before_foo',
                 'bar' => 'bar_after',
                 'baz' => '%escaped%',
-                'boo' => array('boo', '%escaped_parameter%', array('foo_bee', 'bee')),
-                'bee' => array('bee', 'bee'),
-            ),
+                'boo' => ['boo', '%escaped_parameter%', ['foo_bee', 'bee']],
+                'bee' => ['bee', 'bee'],
+            ],
             $route->getDefaults()
         );
     }
@@ -129,15 +129,15 @@ public function testDefaultsPlaceholdersWithSfContainer()
 
         $routes->add('foo', new Route(
             '/foo',
-            array(
+            [
                 'foo' => 'before_%parameter.foo%',
                 'bar' => '%parameter.bar%_after',
                 'baz' => '%%escaped%%',
-                'boo' => array('%parameter%', '%%escaped_parameter%%', array('%bee_parameter%', 'bee')),
-                'bee' => array('bee', 'bee'),
-            ),
-            array(
-            )
+                'boo' => ['%parameter%', '%%escaped_parameter%%', ['%bee_parameter%', 'bee']],
+                'bee' => ['bee', 'bee'],
+            ],
+            [
+            ]
         ));
 
         $sc = $this->getServiceContainer($routes);
@@ -178,21 +178,21 @@ public function testRequirementsPlaceholders()
         ));
 
         $sc = $this->getPsr11ServiceContainer($routes);
-        $parameters = $this->getParameterBag(array(
+        $parameters = $this->getParameterBag([
             'parameter.foo' => 'foo',
             'parameter.bar' => 'bar',
-        ));
+        ]);
 
-        $router = new Router($sc, 'foo', array(), null, $parameters);
+        $router = new Router($sc, 'foo', [], null, $parameters);
 
         $route = $router->getRouteCollection()->get('foo');
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'before_foo',
                 'bar' => 'bar_after',
                 'baz' => '%escaped%',
-            ),
+            ],
             $route->getRequirements()
         );
     }
@@ -203,13 +203,13 @@ public function testRequirementsPlaceholdersWithSfContainer()
 
         $routes->add('foo', new Route(
             '/foo',
-            array(
-            ),
-            array(
+            [
+            ],
+            [
                 'foo' => 'before_%parameter.foo%',
                 'bar' => '%parameter.bar%_after',
                 'baz' => '%%escaped%%',
-            )
+            ]
         ));
 
         $sc = $this->getServiceContainer($routes);
@@ -236,9 +236,9 @@ public function testPatternPlaceholders()
         $routes->add('foo', new Route('/before/%parameter.foo%/after/%%escaped%%'));
 
         $sc = $this->getPsr11ServiceContainer($routes);
-        $parameters = $this->getParameterBag(array('parameter.foo' => 'foo'));
+        $parameters = $this->getParameterBag(['parameter.foo' => 'foo']);
 
-        $router = new Router($sc, 'foo', array(), null, $parameters);
+        $router = new Router($sc, 'foo', [], null, $parameters);
         $route = $router->getRouteCollection()->get('foo');
 
         $this->assertEquals(
@@ -275,7 +275,7 @@ public function testEnvPlaceholders()
 
         $routes->add('foo', new Route('/%env(FOO)%'));
 
-        $router = new Router($this->getPsr11ServiceContainer($routes), 'foo', array(), null, $this->getParameterBag());
+        $router = new Router($this->getPsr11ServiceContainer($routes), 'foo', [], null, $this->getParameterBag());
         $router->getRouteCollection();
     }
 
@@ -303,9 +303,9 @@ public function testHostPlaceholders()
         $routes->add('foo', $route);
 
         $sc = $this->getPsr11ServiceContainer($routes);
-        $parameters = $this->getParameterBag(array('parameter.foo' => 'foo'));
+        $parameters = $this->getParameterBag(['parameter.foo' => 'foo']);
 
-        $router = new Router($sc, 'foo', array(), null, $parameters);
+        $router = new Router($sc, 'foo', [], null, $parameters);
         $route = $router->getRouteCollection()->get('foo');
 
         $this->assertEquals(
@@ -362,9 +362,9 @@ public function testExceptionOnNonStringParameter()
         $routes->add('foo', new Route('/%object%'));
 
         $sc = $this->getPsr11ServiceContainer($routes);
-        $parameters = $this->getParameterBag(array('object' => new \stdClass()));
+        $parameters = $this->getParameterBag(['object' => new \stdClass()]);
 
-        $router = new Router($sc, 'foo', array(), null, $parameters);
+        $router = new Router($sc, 'foo', [], null, $parameters);
         $router->getRouteCollection()->get('foo');
     }
 
@@ -395,7 +395,7 @@ public function testDefaultValuesAsNonStrings($value)
 
         $sc = $this->getPsr11ServiceContainer($routes);
 
-        $router = new Router($sc, 'foo', array(), null, $this->getParameterBag());
+        $router = new Router($sc, 'foo', [], null, $this->getParameterBag());
 
         $route = $router->getRouteCollection()->get('foo');
 
@@ -408,7 +408,7 @@ public function testDefaultValuesAsNonStrings($value)
     public function testDefaultValuesAsNonStringsWithSfContainer($value)
     {
         $routes = new RouteCollection();
-        $routes->add('foo', new Route('foo', array('foo' => $value), array('foo' => '\d+')));
+        $routes->add('foo', new Route('foo', ['foo' => $value], ['foo' => '\d+']));
 
         $sc = $this->getServiceContainer($routes);
 
@@ -425,9 +425,9 @@ public function testGetRouteCollectionAddsContainerParametersResource()
         $routeCollection->add('foo', new Route('/%locale%'));
 
         $sc = $this->getPsr11ServiceContainer($routeCollection);
-        $parameters = $this->getParameterBag(array('locale' => 'en'));
+        $parameters = $this->getParameterBag(['locale' => 'en']);
 
-        $router = new Router($sc, 'foo', array(), null, $parameters);
+        $router = new Router($sc, 'foo', [], null, $parameters);
 
         $router->getRouteCollection();
     }
@@ -497,7 +497,7 @@ private function getPsr11ServiceContainer(RouteCollection $routes): ContainerInt
         return $sc;
     }
 
-    private function getParameterBag(array $params = array()): ContainerInterface
+    private function getParameterBag(array $params = []): ContainerInterface
     {
         $bag = $this->getMockBuilder(ContainerInterface::class)->getMock();
         $bag
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
index dc9dfd71a597..9b4db5101a0c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
@@ -27,7 +27,7 @@ protected function setUp()
             ->expects($this->any())
             ->method('getBundle')
             ->will($this->returnCallback(function ($bundle) {
-                if (\in_array($bundle, array('SensioFooBundle', 'SensioCmsFooBundle', 'FooBundle'))) {
+                if (\in_array($bundle, ['SensioFooBundle', 'SensioCmsFooBundle', 'FooBundle'])) {
                     return true;
                 }
 
@@ -56,22 +56,22 @@ public function testParse($name, $logicalName, $path, $ref)
 
     public function parseProvider()
     {
-        return array(
-            array('FooBundle:Post:index.html.php', 'FooBundle:Post:index.html.php', '@FooBundle/Resources/views/Post/index.html.php', new TemplateReference('FooBundle', 'Post', 'index', 'html', 'php')),
-            array('FooBundle:Post:index.html.twig', 'FooBundle:Post:index.html.twig', '@FooBundle/Resources/views/Post/index.html.twig', new TemplateReference('FooBundle', 'Post', 'index', 'html', 'twig')),
-            array('FooBundle:Post:index.xml.php', 'FooBundle:Post:index.xml.php', '@FooBundle/Resources/views/Post/index.xml.php', new TemplateReference('FooBundle', 'Post', 'index', 'xml', 'php')),
-            array('SensioFooBundle:Post:index.html.php', 'SensioFooBundle:Post:index.html.php', '@SensioFooBundle/Resources/views/Post/index.html.php', new TemplateReference('SensioFooBundle', 'Post', 'index', 'html', 'php')),
-            array('SensioCmsFooBundle:Post:index.html.php', 'SensioCmsFooBundle:Post:index.html.php', '@SensioCmsFooBundle/Resources/views/Post/index.html.php', new TemplateReference('SensioCmsFooBundle', 'Post', 'index', 'html', 'php')),
-            array(':Post:index.html.php', ':Post:index.html.php', 'views/Post/index.html.php', new TemplateReference('', 'Post', 'index', 'html', 'php')),
-            array('::index.html.php', '::index.html.php', 'views/index.html.php', new TemplateReference('', '', 'index', 'html', 'php')),
-            array('index.html.php', '::index.html.php', 'views/index.html.php', new TemplateReference('', '', 'index', 'html', 'php')),
-            array('FooBundle:Post:foo.bar.index.html.php', 'FooBundle:Post:foo.bar.index.html.php', '@FooBundle/Resources/views/Post/foo.bar.index.html.php', new TemplateReference('FooBundle', 'Post', 'foo.bar.index', 'html', 'php')),
-            array('@FooBundle/Resources/views/layout.html.twig', '@FooBundle/Resources/views/layout.html.twig', '@FooBundle/Resources/views/layout.html.twig', new BaseTemplateReference('@FooBundle/Resources/views/layout.html.twig', 'twig')),
-            array('@FooBundle/Foo/layout.html.twig', '@FooBundle/Foo/layout.html.twig', '@FooBundle/Foo/layout.html.twig', new BaseTemplateReference('@FooBundle/Foo/layout.html.twig', 'twig')),
-            array('name.twig', 'name.twig', 'name.twig', new BaseTemplateReference('name.twig', 'twig')),
-            array('name', 'name', 'name', new BaseTemplateReference('name')),
-            array('default/index.html.php', '::default/index.html.php', 'views/default/index.html.php', new TemplateReference(null, null, 'default/index', 'html', 'php')),
-        );
+        return [
+            ['FooBundle:Post:index.html.php', 'FooBundle:Post:index.html.php', '@FooBundle/Resources/views/Post/index.html.php', new TemplateReference('FooBundle', 'Post', 'index', 'html', 'php')],
+            ['FooBundle:Post:index.html.twig', 'FooBundle:Post:index.html.twig', '@FooBundle/Resources/views/Post/index.html.twig', new TemplateReference('FooBundle', 'Post', 'index', 'html', 'twig')],
+            ['FooBundle:Post:index.xml.php', 'FooBundle:Post:index.xml.php', '@FooBundle/Resources/views/Post/index.xml.php', new TemplateReference('FooBundle', 'Post', 'index', 'xml', 'php')],
+            ['SensioFooBundle:Post:index.html.php', 'SensioFooBundle:Post:index.html.php', '@SensioFooBundle/Resources/views/Post/index.html.php', new TemplateReference('SensioFooBundle', 'Post', 'index', 'html', 'php')],
+            ['SensioCmsFooBundle:Post:index.html.php', 'SensioCmsFooBundle:Post:index.html.php', '@SensioCmsFooBundle/Resources/views/Post/index.html.php', new TemplateReference('SensioCmsFooBundle', 'Post', 'index', 'html', 'php')],
+            [':Post:index.html.php', ':Post:index.html.php', 'views/Post/index.html.php', new TemplateReference('', 'Post', 'index', 'html', 'php')],
+            ['::index.html.php', '::index.html.php', 'views/index.html.php', new TemplateReference('', '', 'index', 'html', 'php')],
+            ['index.html.php', '::index.html.php', 'views/index.html.php', new TemplateReference('', '', 'index', 'html', 'php')],
+            ['FooBundle:Post:foo.bar.index.html.php', 'FooBundle:Post:foo.bar.index.html.php', '@FooBundle/Resources/views/Post/foo.bar.index.html.php', new TemplateReference('FooBundle', 'Post', 'foo.bar.index', 'html', 'php')],
+            ['@FooBundle/Resources/views/layout.html.twig', '@FooBundle/Resources/views/layout.html.twig', '@FooBundle/Resources/views/layout.html.twig', new BaseTemplateReference('@FooBundle/Resources/views/layout.html.twig', 'twig')],
+            ['@FooBundle/Foo/layout.html.twig', '@FooBundle/Foo/layout.html.twig', '@FooBundle/Foo/layout.html.twig', new BaseTemplateReference('@FooBundle/Foo/layout.html.twig', 'twig')],
+            ['name.twig', 'name.twig', 'name.twig', new BaseTemplateReference('name.twig', 'twig')],
+            ['name', 'name', 'name', new BaseTemplateReference('name')],
+            ['default/index.html.php', '::default/index.html.php', 'views/default/index.html.php', new TemplateReference(null, null, 'default/index', 'html', 'php')],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
index eeb4e0daa48d..b33acce50723 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
@@ -47,7 +47,7 @@ public function testTransWithoutCaching()
     {
         $translator = $this->getTranslator($this->getLoader());
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -63,9 +63,9 @@ public function testTransWithoutCaching()
     public function testTransWithCaching()
     {
         // prime the cache
-        $translator = $this->getTranslator($this->getLoader(), array('cache_dir' => $this->tmpDir));
+        $translator = $this->getTranslator($this->getLoader(), ['cache_dir' => $this->tmpDir]);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -81,9 +81,9 @@ public function testTransWithCaching()
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
         $loader->expects($this->never())->method('load');
 
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir));
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir]);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
@@ -103,7 +103,7 @@ public function testTransWithCaching()
     public function testTransWithCachingWithInvalidLocale()
     {
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir), 'loader', '\Symfony\Bundle\FrameworkBundle\Tests\Translation\TranslatorWithInvalidLocale');
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir], 'loader', '\Symfony\Bundle\FrameworkBundle\Tests\Translation\TranslatorWithInvalidLocale');
 
         $translator->trans('foo');
     }
@@ -111,13 +111,13 @@ public function testTransWithCachingWithInvalidLocale()
     public function testLoadResourcesWithoutCaching()
     {
         $loader = new \Symfony\Component\Translation\Loader\YamlFileLoader();
-        $resourceFiles = array(
-            'fr' => array(
+        $resourceFiles = [
+            'fr' => [
                 __DIR__.'/../Fixtures/Resources/translations/messages.fr.yml',
-            ),
-        );
+            ],
+        ];
 
-        $translator = $this->getTranslator($loader, array('resource_files' => $resourceFiles), 'yml');
+        $translator = $this->getTranslator($loader, ['resource_files' => $resourceFiles], 'yml');
         $translator->setLocale('fr');
 
         $this->assertEquals('répertoire', $translator->trans('folder'));
@@ -139,13 +139,13 @@ public function testInvalidOptions()
     {
         $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerInterface')->getMock();
 
-        (new Translator($container, new MessageFormatter(), 'en', array(), array('foo' => 'bar')));
+        (new Translator($container, new MessageFormatter(), 'en', [], ['foo' => 'bar']));
     }
 
     /** @dataProvider getDebugModeAndCacheDirCombinations */
     public function testResourceFilesOptionLoadsBeforeOtherAddedResources($debug, $enableCache)
     {
-        $someCatalogue = $this->getCatalogue('some_locale', array());
+        $someCatalogue = $this->getCatalogue('some_locale', []);
 
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
 
@@ -161,10 +161,10 @@ public function testResourceFilesOptionLoadsBeforeOtherAddedResources($debug, $e
             ->with('second_resource.some_locale.loader', 'some_locale', 'messages')
             ->willReturn($someCatalogue);
 
-        $options = array(
-            'resource_files' => array('some_locale' => array('messages.some_locale.loader')),
+        $options = [
+            'resource_files' => ['some_locale' => ['messages.some_locale.loader']],
             'debug' => $debug,
-        );
+        ];
 
         if ($enableCache) {
             $options['cache_dir'] = $this->tmpDir;
@@ -174,20 +174,20 @@ public function testResourceFilesOptionLoadsBeforeOtherAddedResources($debug, $e
         $translator = $this->createTranslator($loader, $options);
         $translator->addResource('loader', 'second_resource.some_locale.loader', 'some_locale', 'messages');
 
-        $translator->trans('some_message', array(), null, 'some_locale');
+        $translator->trans('some_message', [], null, 'some_locale');
     }
 
     public function getDebugModeAndCacheDirCombinations()
     {
-        return array(
-            array(false, false),
-            array(true, false),
-            array(false, true),
-            array(true, true),
-        );
+        return [
+            [false, false],
+            [true, false],
+            [false, true],
+            [true, true],
+        ];
     }
 
-    protected function getCatalogue($locale, $messages, $resources = array())
+    protected function getCatalogue($locale, $messages, $resources = [])
     {
         $catalogue = new MessageCatalogue($locale);
         foreach ($messages as $key => $translation) {
@@ -206,53 +206,53 @@ protected function getLoader()
         $loader
             ->expects($this->at(0))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('fr', array(
+            ->will($this->returnValue($this->getCatalogue('fr', [
                 'foo' => 'foo (FR)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(1))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('en', array(
+            ->will($this->returnValue($this->getCatalogue('en', [
                 'foo' => 'foo (EN)',
                 'bar' => 'bar (EN)',
                 'choice' => '{0} choice 0 (EN)|{1} choice 1 (EN)|]1,Inf] choice inf (EN)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(2))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('es', array(
+            ->will($this->returnValue($this->getCatalogue('es', [
                 'foobar' => 'foobar (ES)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(3))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('pt-PT', array(
+            ->will($this->returnValue($this->getCatalogue('pt-PT', [
                 'foobarfoo' => 'foobarfoo (PT-PT)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(4))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('pt_BR', array(
+            ->will($this->returnValue($this->getCatalogue('pt_BR', [
                 'other choice' => '{0} other choice 0 (PT-BR)|{1} other choice 1 (PT-BR)|]1,Inf] other choice inf (PT-BR)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(5))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('fr.UTF-8', array(
+            ->will($this->returnValue($this->getCatalogue('fr.UTF-8', [
                 'foobarbaz' => 'foobarbaz (fr.UTF-8)',
-            ))))
+            ])))
         ;
         $loader
             ->expects($this->at(6))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('sr@latin', array(
+            ->will($this->returnValue($this->getCatalogue('sr@latin', [
                 'foobarbax' => 'foobarbax (sr@latin)',
-            ))))
+            ])))
         ;
 
         return $loader;
@@ -270,7 +270,7 @@ protected function getContainer($loader)
         return $container;
     }
 
-    public function getTranslator($loader, $options = array(), $loaderFomat = 'loader', $translatorClass = '\Symfony\Bundle\FrameworkBundle\Translation\Translator', $defaultLocale = 'en')
+    public function getTranslator($loader, $options = [], $loaderFomat = 'loader', $translatorClass = '\Symfony\Bundle\FrameworkBundle\Translation\Translator', $defaultLocale = 'en')
     {
         $translator = $this->createTranslator($loader, $options, $translatorClass, $loaderFomat, $defaultLocale);
 
@@ -290,15 +290,15 @@ public function getTranslator($loader, $options = array(), $loaderFomat = 'loade
     public function testWarmup()
     {
         $loader = new \Symfony\Component\Translation\Loader\YamlFileLoader();
-        $resourceFiles = array(
-            'fr' => array(
+        $resourceFiles = [
+            'fr' => [
                 __DIR__.'/../Fixtures/Resources/translations/messages.fr.yml',
-            ),
-        );
+            ],
+        ];
 
         // prime the cache
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles), 'yml');
-        $translator->setFallbackLocales(array('fr'));
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles], 'yml');
+        $translator->setFallbackLocales(['fr']);
         $translator->warmup($this->tmpDir);
 
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
@@ -306,9 +306,9 @@ public function testWarmup()
             ->expects($this->never())
             ->method('load');
 
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles), 'yml');
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir, 'resource_files' => $resourceFiles], 'yml');
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('fr'));
+        $translator->setFallbackLocales(['fr']);
         $this->assertEquals('répertoire', $translator->trans('folder'));
     }
 
@@ -318,7 +318,7 @@ private function createTranslator($loader, $options, $translatorClass = '\Symfon
             return new $translatorClass(
                 $this->getContainer($loader),
                 new MessageFormatter(),
-                array($loaderFomat => array($loaderFomat)),
+                [$loaderFomat => [$loaderFomat]],
                 $options
             );
         }
@@ -327,7 +327,7 @@ private function createTranslator($loader, $options, $translatorClass = '\Symfon
             $this->getContainer($loader),
             new MessageFormatter(),
             $defaultLocale,
-            array($loaderFomat => array($loaderFomat)),
+            [$loaderFomat => [$loaderFomat]],
             $options
         );
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php b/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
index 198fcd9cb83d..e0d0243281bb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
@@ -27,11 +27,11 @@ class Translator extends BaseTranslator implements WarmableInterface
     protected $container;
     protected $loaderIds;
 
-    protected $options = array(
+    protected $options = [
         'cache_dir' => null,
         'debug' => false,
-        'resource_files' => array(),
-    );
+        'resource_files' => [],
+    ];
 
     /**
      * @var array
@@ -44,7 +44,7 @@ class Translator extends BaseTranslator implements WarmableInterface
      *
      * @var array
      */
-    private $resources = array();
+    private $resources = [];
 
     private $resourceFiles;
 
@@ -65,7 +65,7 @@ class Translator extends BaseTranslator implements WarmableInterface
      *
      * @throws InvalidArgumentException
      */
-    public function __construct(ContainerInterface $container, MessageFormatterInterface $formatter, string $defaultLocale, array $loaderIds = array(), array $options = array())
+    public function __construct(ContainerInterface $container, MessageFormatterInterface $formatter, string $defaultLocale, array $loaderIds = [], array $options = [])
     {
         $this->container = $container;
         $this->loaderIds = $loaderIds;
@@ -92,7 +92,7 @@ public function warmUp($cacheDir)
             return;
         }
 
-        $locales = array_merge($this->getFallbackLocales(), array($this->getLocale()), $this->resourceLocales);
+        $locales = array_merge($this->getFallbackLocales(), [$this->getLocale()], $this->resourceLocales);
         foreach (array_unique($locales) as $locale) {
             // reset catalogue in case it's already loaded during the dump of the other locales.
             if (isset($this->catalogues[$locale])) {
@@ -108,7 +108,7 @@ public function addResource($format, $resource, $locale, $domain = null)
         if ($this->resourceFiles) {
             $this->addResourceFiles();
         }
-        $this->resources[] = array($format, $resource, $locale, $domain);
+        $this->resources[] = [$format, $resource, $locale, $domain];
     }
 
     /**
@@ -129,7 +129,7 @@ protected function initialize()
             list($format, $resource, $locale, $domain) = $params;
             parent::addResource($format, $resource, $locale, $domain);
         }
-        $this->resources = array();
+        $this->resources = [];
 
         foreach ($this->loaderIds as $id => $aliases) {
             foreach ($aliases as $alias) {
@@ -141,7 +141,7 @@ protected function initialize()
     private function addResourceFiles()
     {
         $filesByLocale = $this->resourceFiles;
-        $this->resourceFiles = array();
+        $this->resourceFiles = [];
 
         foreach ($filesByLocale as $locale => $files) {
             foreach ($files as $key => $file) {
diff --git a/src/Symfony/Bundle/SecurityBundle/CacheWarmer/ExpressionCacheWarmer.php b/src/Symfony/Bundle/SecurityBundle/CacheWarmer/ExpressionCacheWarmer.php
index de5a75b3b041..938b28dcb637 100644
--- a/src/Symfony/Bundle/SecurityBundle/CacheWarmer/ExpressionCacheWarmer.php
+++ b/src/Symfony/Bundle/SecurityBundle/CacheWarmer/ExpressionCacheWarmer.php
@@ -37,7 +37,7 @@ public function isOptional()
     public function warmUp($cacheDir)
     {
         foreach ($this->expressions as $expression) {
-            $this->expressionLanguage->parse($expression, array('token', 'user', 'object', 'subject', 'roles', 'request', 'trust_resolver'));
+            $this->expressionLanguage->parse($expression, ['token', 'user', 'object', 'subject', 'roles', 'request', 'trust_resolver']);
         }
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
index b3dccfd06522..15f59f47540f 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
@@ -38,7 +38,7 @@ class UserPasswordEncoderCommand extends Command
     private $encoderFactory;
     private $userClasses;
 
-    public function __construct(EncoderFactoryInterface $encoderFactory, array $userClasses = array())
+    public function __construct(EncoderFactoryInterface $encoderFactory, array $userClasses = [])
     {
         $this->encoderFactory = $encoderFactory;
         $this->userClasses = $userClasses;
@@ -146,14 +146,14 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $encodedPassword = $encoder->encodePassword($password, $salt);
 
-        $rows = array(
-            array('Encoder used', \get_class($encoder)),
-            array('Encoded password', $encodedPassword),
-        );
+        $rows = [
+            ['Encoder used', \get_class($encoder)],
+            ['Encoded password', $encodedPassword],
+        ];
         if (!$emptySalt) {
-            $rows[] = array('Generated salt', $salt);
+            $rows[] = ['Generated salt', $salt];
         }
-        $io->table(array('Key', 'Value'), $rows);
+        $io->table(['Key', 'Value'], $rows);
 
         if (!$emptySalt) {
             $errorIo->note(sprintf('Make sure that your salt storage field fits the salt length: %s chars', \strlen($salt)));
diff --git a/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php b/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
index bf7ff93327f5..b3826e545a21 100644
--- a/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
+++ b/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
@@ -59,7 +59,7 @@ public function __construct(TokenStorageInterface $tokenStorage = null, RoleHier
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
         if (null === $this->tokenStorage) {
-            $this->data = array(
+            $this->data = [
                 'enabled' => false,
                 'authenticated' => false,
                 'impersonated' => false,
@@ -69,12 +69,12 @@ public function collect(Request $request, Response $response, \Exception $except
                 'token_class' => null,
                 'logout_url' => null,
                 'user' => '',
-                'roles' => array(),
-                'inherited_roles' => array(),
+                'roles' => [],
+                'inherited_roles' => [],
                 'supports_role_hierarchy' => null !== $this->roleHierarchy,
-            );
+            ];
         } elseif (null === $token = $this->tokenStorage->getToken()) {
-            $this->data = array(
+            $this->data = [
                 'enabled' => true,
                 'authenticated' => false,
                 'impersonated' => false,
@@ -84,12 +84,12 @@ public function collect(Request $request, Response $response, \Exception $except
                 'token_class' => null,
                 'logout_url' => null,
                 'user' => '',
-                'roles' => array(),
-                'inherited_roles' => array(),
+                'roles' => [],
+                'inherited_roles' => [],
                 'supports_role_hierarchy' => null !== $this->roleHierarchy,
-            );
+            ];
         } else {
-            $inheritedRoles = array();
+            $inheritedRoles = [];
             $assignedRoles = $token->getRoles();
 
             $impersonatorUser = null;
@@ -118,7 +118,7 @@ public function collect(Request $request, Response $response, \Exception $except
                 // fail silently when the logout URL cannot be generated
             }
 
-            $this->data = array(
+            $this->data = [
                 'enabled' => true,
                 'authenticated' => $token->isAuthenticated(),
                 'impersonated' => null !== $impersonatorUser,
@@ -131,7 +131,7 @@ public function collect(Request $request, Response $response, \Exception $except
                 'roles' => array_map(function (Role $role) { return $role->getRole(); }, $assignedRoles),
                 'inherited_roles' => array_unique(array_map(function (Role $role) { return $role->getRole(); }, $inheritedRoles)),
                 'supports_role_hierarchy' => null !== $this->roleHierarchy,
-            );
+            ];
         }
 
         // collect voters and access decision manager information
@@ -143,9 +143,9 @@ public function collect(Request $request, Response $response, \Exception $except
                 $this->data['voters'][] = $this->hasVarDumper ? new ClassStub(\get_class($voter)) : \get_class($voter);
             }
         } else {
-            $this->data['access_decision_log'] = array();
+            $this->data['access_decision_log'] = [];
             $this->data['voter_strategy'] = 'unknown';
-            $this->data['voters'] = array();
+            $this->data['voters'] = [];
         }
 
         // collect firewall context information
@@ -153,7 +153,7 @@ public function collect(Request $request, Response $response, \Exception $except
         if ($this->firewallMap instanceof FirewallMap) {
             $firewallConfig = $this->firewallMap->getFirewallConfig($request);
             if (null !== $firewallConfig) {
-                $this->data['firewall'] = array(
+                $this->data['firewall'] = [
                     'name' => $firewallConfig->getName(),
                     'allows_anonymous' => $firewallConfig->allowsAnonymous(),
                     'request_matcher' => $firewallConfig->getRequestMatcher(),
@@ -166,7 +166,7 @@ public function collect(Request $request, Response $response, \Exception $except
                     'access_denied_url' => $firewallConfig->getAccessDeniedUrl(),
                     'user_checker' => $firewallConfig->getUserChecker(),
                     'listeners' => $firewallConfig->getListeners(),
-                );
+                ];
 
                 // generate exit impersonation path from current request
                 if ($this->data['impersonated'] && null !== $switchUserConfig = $firewallConfig->getSwitchUser()) {
@@ -180,7 +180,7 @@ public function collect(Request $request, Response $response, \Exception $except
         }
 
         // collect firewall listeners information
-        $this->data['listeners'] = array();
+        $this->data['listeners'] = [];
         if ($this->firewall) {
             $this->data['listeners'] = $this->firewall->getWrappedListeners();
         }
@@ -191,7 +191,7 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
     }
 
     public function lateCollect()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
index 4aea6a70fe3a..152925ec318c 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
@@ -66,7 +66,7 @@ public function getConfigTreeBuilder()
             ->children()
                 ->scalarNode('access_denied_url')->defaultNull()->example('/foo/error403')->end()
                 ->enumNode('session_fixation_strategy')
-                    ->values(array(SessionAuthenticationStrategy::NONE, SessionAuthenticationStrategy::MIGRATE, SessionAuthenticationStrategy::INVALIDATE))
+                    ->values([SessionAuthenticationStrategy::NONE, SessionAuthenticationStrategy::MIGRATE, SessionAuthenticationStrategy::INVALIDATE])
                     ->defaultValue(SessionAuthenticationStrategy::MIGRATE)
                 ->end()
                 ->booleanNode('hide_user_not_found')->defaultTrue()->end()
@@ -76,7 +76,7 @@ public function getConfigTreeBuilder()
                     ->addDefaultsIfNotSet()
                     ->children()
                         ->enumNode('strategy')
-                            ->values(array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, AccessDecisionManager::STRATEGY_CONSENSUS, AccessDecisionManager::STRATEGY_UNANIMOUS))
+                            ->values([AccessDecisionManager::STRATEGY_AFFIRMATIVE, AccessDecisionManager::STRATEGY_CONSENSUS, AccessDecisionManager::STRATEGY_UNANIMOUS])
                         ->end()
                         ->scalarNode('service')->end()
                         ->booleanNode('allow_if_all_abstain')->defaultFalse()->end()
@@ -108,7 +108,7 @@ private function addRoleHierarchySection(ArrayNodeDefinition $rootNode)
                     ->useAttributeAsKey('id')
                     ->prototype('array')
                         ->performNoDeepMerging()
-                        ->beforeNormalization()->ifString()->then(function ($v) { return array('value' => $v); })->end()
+                        ->beforeNormalization()->ifString()->then(function ($v) { return ['value' => $v]; })->end()
                         ->beforeNormalization()
                             ->ifTrue(function ($v) { return \is_array($v) && isset($v['value']); })
                             ->then(function ($v) { return preg_split('/\s*,\s*/', $v['value']); })
@@ -139,7 +139,7 @@ private function addAccessControlSection(ArrayNodeDefinition $rootNode)
                             ->end()
                             ->scalarNode('host')->defaultNull()->end()
                             ->arrayNode('ips')
-                                ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                                ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                                 ->prototype('scalar')->end()
                             ->end()
                             ->arrayNode('methods')
@@ -201,7 +201,7 @@ private function addFirewallsSection(ArrayNodeDefinition $rootNode, array $facto
                 ->setDeprecated('The "%path%.%node%" configuration key has been deprecated in Symfony 4.1.')
             ->end()
             ->arrayNode('logout')
-                ->treatTrueLike(array())
+                ->treatTrueLike([])
                 ->canBeUnset()
                 ->children()
                     ->scalarNode('csrf_parameter')->defaultValue('_csrf_token')->end()
@@ -217,7 +217,7 @@ private function addFirewallsSection(ArrayNodeDefinition $rootNode, array $facto
                     ->arrayNode('delete_cookies')
                         ->beforeNormalization()
                             ->ifTrue(function ($v) { return \is_array($v) && \is_int(key($v)); })
-                            ->then(function ($v) { return array_map(function ($v) { return array('name' => $v); }, $v); })
+                            ->then(function ($v) { return array_map(function ($v) { return ['name' => $v]; }, $v); })
                         ->end()
                         ->useAttributeAsKey('name')
                         ->prototype('array')
@@ -255,7 +255,7 @@ private function addFirewallsSection(ArrayNodeDefinition $rootNode, array $facto
             ->end()
         ;
 
-        $abstractFactoryKeys = array();
+        $abstractFactoryKeys = [];
         foreach ($factories as $factoriesAtPosition) {
             foreach ($factoriesAtPosition as $factory) {
                 $name = str_replace('-', '_', $factory->getKey());
@@ -301,17 +301,17 @@ private function addProvidersSection(ArrayNodeDefinition $rootNode)
             ->fixXmlConfig('provider')
             ->children()
                 ->arrayNode('providers')
-                    ->example(array(
-                        'my_memory_provider' => array(
-                            'memory' => array(
-                                'users' => array(
-                                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                                    'bar' => array('password' => 'bar', 'roles' => '[ROLE_USER, ROLE_ADMIN]'),
-                                ),
-                            ),
-                        ),
-                        'my_entity_provider' => array('entity' => array('class' => 'SecurityBundle:User', 'property' => 'username')),
-                    ))
+                    ->example([
+                        'my_memory_provider' => [
+                            'memory' => [
+                                'users' => [
+                                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                                    'bar' => ['password' => 'bar', 'roles' => '[ROLE_USER, ROLE_ADMIN]'],
+                                ],
+                            ],
+                        ],
+                        'my_entity_provider' => ['entity' => ['class' => 'SecurityBundle:User', 'property' => 'username']],
+                    ])
                     ->requiresAtLeastOneElement()
                     ->useAttributeAsKey('name')
                     ->prototype('array')
@@ -360,19 +360,19 @@ private function addEncodersSection(ArrayNodeDefinition $rootNode)
             ->fixXmlConfig('encoder')
             ->children()
                 ->arrayNode('encoders')
-                    ->example(array(
+                    ->example([
                         'App\Entity\User1' => 'bcrypt',
-                        'App\Entity\User2' => array(
+                        'App\Entity\User2' => [
                             'algorithm' => 'bcrypt',
                             'cost' => 13,
-                        ),
-                    ))
+                        ],
+                    ])
                     ->requiresAtLeastOneElement()
                     ->useAttributeAsKey('class')
                     ->prototype('array')
                         ->canBeUnset()
                         ->performNoDeepMerging()
-                        ->beforeNormalization()->ifString()->then(function ($v) { return array('algorithm' => $v); })->end()
+                        ->beforeNormalization()->ifString()->then(function ($v) { return ['algorithm' => $v]; })->end()
                         ->children()
                             ->scalarNode('algorithm')->cannotBeEmpty()->end()
                             ->scalarNode('hash_algorithm')->info('Name of hashing algorithm for PBKDF2 (i.e. sha256, sha512, etc..) See hash_algos() for a list of supported algorithms.')->defaultValue('sha512')->end()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
index 4e8eef0fb50c..8cf07213e572 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
@@ -39,18 +39,18 @@
  */
 class SecurityExtension extends Extension
 {
-    private $requestMatchers = array();
-    private $expressions = array();
-    private $contextListeners = array();
-    private $listenerPositions = array('pre_auth', 'form', 'http', 'remember_me');
-    private $factories = array();
-    private $userProviderFactories = array();
-    private $statelessFirewallKeys = array();
+    private $requestMatchers = [];
+    private $expressions = [];
+    private $contextListeners = [];
+    private $listenerPositions = ['pre_auth', 'form', 'http', 'remember_me'];
+    private $factories = [];
+    private $userProviderFactories = [];
+    private $statelessFirewallKeys = [];
 
     public function __construct()
     {
         foreach ($this->listenerPositions as $position) {
-            $this->factories[$position] = array();
+            $this->factories[$position] = [];
         }
     }
 
@@ -154,7 +154,7 @@ private function createAuthorization($config, ContainerBuilder $container)
             }
 
             $container->getDefinition('security.access_map')
-                      ->addMethodCall('add', array($matcher, $attributes, $access['requires_channel']));
+                      ->addMethodCall('add', [$matcher, $attributes, $access['requires_channel']]);
         }
 
         // allow cache warm-up for expressions
@@ -178,7 +178,7 @@ private function createFirewalls($config, ContainerBuilder $container)
         // make the ContextListener aware of the configured user providers
         $contextListenerDefinition = $container->getDefinition('security.context_listener');
         $arguments = $contextListenerDefinition->getArguments();
-        $userProviders = array();
+        $userProviders = [];
         foreach ($providerIds as $userProviderId) {
             $userProviders[] = new Reference($userProviderId);
         }
@@ -193,7 +193,7 @@ private function createFirewalls($config, ContainerBuilder $container)
 
         // load firewall map
         $mapDef = $container->getDefinition('security.firewall.map');
-        $map = $authenticationProviders = $contextRefs = array();
+        $map = $authenticationProviders = $contextRefs = [];
         foreach ($firewalls as $name => $firewall) {
             if (isset($firewall['user_checker']) && 'security.user_checker' !== $firewall['user_checker']) {
                 $customUserChecker = true;
@@ -246,7 +246,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         } elseif (isset($firewall['pattern']) || isset($firewall['host'])) {
             $pattern = isset($firewall['pattern']) ? $firewall['pattern'] : null;
             $host = isset($firewall['host']) ? $firewall['host'] : null;
-            $methods = isset($firewall['methods']) ? $firewall['methods'] : array();
+            $methods = isset($firewall['methods']) ? $firewall['methods'] : [];
             $matcher = $this->createRequestMatcher($container, $pattern, $host, $methods);
         }
 
@@ -255,7 +255,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
 
         // Security disabled?
         if (false === $firewall['security']) {
-            return array($matcher, array(), null, null);
+            return [$matcher, [], null, null];
         }
 
         $config->replaceArgument(4, $firewall['stateless']);
@@ -274,8 +274,8 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         $config->replaceArgument(5, $defaultProvider);
 
         // Register listeners
-        $listeners = array();
-        $listenerKeys = array();
+        $listeners = [];
+        $listenerKeys = [];
 
         // Channel listener
         $listeners[] = new Reference('security.channel_listener');
@@ -299,11 +299,11 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         if (isset($firewall['logout'])) {
             $logoutListenerId = 'security.logout_listener.'.$id;
             $logoutListener = $container->setDefinition($logoutListenerId, new ChildDefinition('security.logout_listener'));
-            $logoutListener->replaceArgument(3, array(
+            $logoutListener->replaceArgument(3, [
                 'csrf_parameter' => $firewall['logout']['csrf_parameter'],
                 'csrf_token_id' => $firewall['logout']['csrf_token_id'],
                 'logout_path' => $firewall['logout']['path'],
-            ));
+            ]);
 
             // add logout success handler
             if (isset($firewall['logout']['success_handler'])) {
@@ -322,7 +322,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
 
             // add session logout handler
             if (true === $firewall['logout']['invalidate_session'] && false === $firewall['stateless']) {
-                $logoutListener->addMethodCall('addHandler', array(new Reference('security.logout.handler.session')));
+                $logoutListener->addMethodCall('addHandler', [new Reference('security.logout.handler.session')]);
             }
 
             // add cookie logout handler
@@ -331,25 +331,25 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
                 $cookieHandler = $container->setDefinition($cookieHandlerId, new ChildDefinition('security.logout.handler.cookie_clearing'));
                 $cookieHandler->addArgument($firewall['logout']['delete_cookies']);
 
-                $logoutListener->addMethodCall('addHandler', array(new Reference($cookieHandlerId)));
+                $logoutListener->addMethodCall('addHandler', [new Reference($cookieHandlerId)]);
             }
 
             // add custom handlers
             foreach ($firewall['logout']['handlers'] as $handlerId) {
-                $logoutListener->addMethodCall('addHandler', array(new Reference($handlerId)));
+                $logoutListener->addMethodCall('addHandler', [new Reference($handlerId)]);
             }
 
             // register with LogoutUrlGenerator
             $container
                 ->getDefinition('security.logout_url_generator')
-                ->addMethodCall('registerListener', array(
+                ->addMethodCall('registerListener', [
                     $id,
                     $firewall['logout']['path'],
                     $firewall['logout']['csrf_token_id'],
                     $firewall['logout']['csrf_parameter'],
                     isset($firewall['logout']['csrf_token_generator']) ? new Reference($firewall['logout']['csrf_token_generator']) : null,
                     false === $firewall['stateless'] && isset($firewall['context']) ? $firewall['context'] : null,
-                ))
+                ])
             ;
         }
 
@@ -396,7 +396,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         $config->replaceArgument(10, $listenerKeys);
         $config->replaceArgument(11, isset($firewall['switch_user']) ? $firewall['switch_user'] : null);
 
-        return array($matcher, $listeners, $exceptionListener, null !== $logoutListenerId ? new Reference($logoutListenerId) : null);
+        return [$matcher, $listeners, $exceptionListener, null !== $logoutListenerId ? new Reference($logoutListenerId) : null];
     }
 
     private function createContextListener($container, $contextKey)
@@ -414,7 +414,7 @@ private function createContextListener($container, $contextKey)
 
     private function createAuthenticationListeners($container, $id, $firewall, &$authenticationProviders, $defaultProvider = null, array $providerIds, $defaultEntryPoint)
     {
-        $listeners = array();
+        $listeners = [];
         $hasListeners = false;
 
         foreach ($this->listenerPositions as $position) {
@@ -476,19 +476,19 @@ private function createAuthenticationListeners($container, $id, $firewall, &$aut
             throw new InvalidConfigurationException(sprintf('No authentication listener registered for firewall "%s".', $id));
         }
 
-        return array($listeners, $defaultEntryPoint);
+        return [$listeners, $defaultEntryPoint];
     }
 
     private function createEncoders($encoders, ContainerBuilder $container)
     {
-        $encoderMap = array();
+        $encoderMap = [];
         foreach ($encoders as $class => $encoder) {
             $encoderMap[$class] = $this->createEncoder($encoder, $container);
         }
 
         $container
             ->getDefinition('security.encoder_factory.generic')
-            ->setArguments(array($encoderMap))
+            ->setArguments([$encoderMap])
         ;
     }
 
@@ -501,33 +501,33 @@ private function createEncoder($config, ContainerBuilder $container)
 
         // plaintext encoder
         if ('plaintext' === $config['algorithm']) {
-            $arguments = array($config['ignore_case']);
+            $arguments = [$config['ignore_case']];
 
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder',
                 'arguments' => $arguments,
-            );
+            ];
         }
 
         // pbkdf2 encoder
         if ('pbkdf2' === $config['algorithm']) {
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Pbkdf2PasswordEncoder',
-                'arguments' => array(
+                'arguments' => [
                     $config['hash_algorithm'],
                     $config['encode_as_base64'],
                     $config['iterations'],
                     $config['key_length'],
-                ),
-            );
+                ],
+            ];
         }
 
         // bcrypt encoder
         if ('bcrypt' === $config['algorithm']) {
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder',
-                'arguments' => array($config['cost']),
-            );
+                'arguments' => [$config['cost']],
+            ];
         }
 
         // Argon2i encoder
@@ -536,14 +536,14 @@ private function createEncoder($config, ContainerBuilder $container)
                 throw new InvalidConfigurationException('Argon2i algorithm is not supported. Please install the libsodium extension or upgrade to PHP 7.2+.');
             }
 
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Argon2iPasswordEncoder',
-                'arguments' => array(
+                'arguments' => [
                     $config['memory_cost'],
                     $config['time_cost'],
                     $config['threads'],
-                ),
-            );
+                ],
+            ];
         }
 
         // run-time configured encoder
@@ -553,7 +553,7 @@ private function createEncoder($config, ContainerBuilder $container)
     // Parses user providers and returns an array of their ids
     private function createUserProviders($config, ContainerBuilder $container)
     {
-        $providerIds = array();
+        $providerIds = [];
         foreach ($config['providers'] as $name => $provider) {
             $id = $this->createUserDaoProvider($name, $provider, $container);
             $providerIds[str_replace('-', '_', $name)] = $id;
@@ -587,7 +587,7 @@ private function createUserDaoProvider($name, $provider, ContainerBuilder $conta
 
         // Chain provider
         if (isset($provider['chain'])) {
-            $providers = array();
+            $providers = [];
             foreach ($provider['chain']['providers'] as $providerName) {
                 $providers[] = new Reference($this->getUserProviderId($providerName));
             }
@@ -664,20 +664,20 @@ private function createExpression($container, $expression)
         return $this->expressions[$id] = new Reference($id);
     }
 
-    private function createRequestMatcher($container, $path = null, $host = null, $methods = array(), $ip = null, array $attributes = array())
+    private function createRequestMatcher($container, $path = null, $host = null, $methods = [], $ip = null, array $attributes = [])
     {
         if ($methods) {
             $methods = array_map('strtoupper', (array) $methods);
         }
 
-        $id = '.security.request_matcher.'.ContainerBuilder::hash(array($path, $host, $methods, $ip, $attributes));
+        $id = '.security.request_matcher.'.ContainerBuilder::hash([$path, $host, $methods, $ip, $attributes]);
 
         if (isset($this->requestMatchers[$id])) {
             return $this->requestMatchers[$id];
         }
 
         // only add arguments that are necessary
-        $arguments = array($path, $host, $methods, $ip, $attributes);
+        $arguments = [$path, $host, $methods, $ip, $attributes];
         while (\count($arguments) > 0 && !end($arguments)) {
             array_pop($arguments);
         }
diff --git a/src/Symfony/Bundle/SecurityBundle/Security/FirewallConfig.php b/src/Symfony/Bundle/SecurityBundle/Security/FirewallConfig.php
index 795f5b3cc071..dca8ccde565c 100644
--- a/src/Symfony/Bundle/SecurityBundle/Security/FirewallConfig.php
+++ b/src/Symfony/Bundle/SecurityBundle/Security/FirewallConfig.php
@@ -29,7 +29,7 @@ final class FirewallConfig
     private $listeners;
     private $switchUser;
 
-    public function __construct(string $name, string $userChecker, string $requestMatcher = null, bool $securityEnabled = true, bool $stateless = false, string $provider = null, string $context = null, string $entryPoint = null, string $accessDeniedHandler = null, string $accessDeniedUrl = null, array $listeners = array(), $switchUser = null)
+    public function __construct(string $name, string $userChecker, string $requestMatcher = null, bool $securityEnabled = true, bool $stateless = false, string $provider = null, string $context = null, string $entryPoint = null, string $accessDeniedHandler = null, string $accessDeniedUrl = null, array $listeners = [], $switchUser = null)
     {
         $this->name = $name;
         $this->userChecker = $userChecker;
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/CacheWarmer/ExpressionCacheWarmerTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/CacheWarmer/ExpressionCacheWarmerTest.php
index 30ead76927a1..d1299bffed61 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/CacheWarmer/ExpressionCacheWarmerTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/CacheWarmer/ExpressionCacheWarmerTest.php
@@ -20,14 +20,14 @@ class ExpressionCacheWarmerTest extends TestCase
 {
     public function testWarmUp()
     {
-        $expressions = array(new Expression('A'), new Expression('B'));
+        $expressions = [new Expression('A'), new Expression('B')];
 
         $expressionLang = $this->createMock(ExpressionLanguage::class);
         $expressionLang->expects($this->exactly(2))
             ->method('parse')
             ->withConsecutive(
-                array($expressions[0], array('token', 'user', 'object', 'subject', 'roles', 'request', 'trust_resolver')),
-                array($expressions[1], array('token', 'user', 'object', 'subject', 'roles', 'request', 'trust_resolver'))
+                [$expressions[0], ['token', 'user', 'object', 'subject', 'roles', 'request', 'trust_resolver']],
+                [$expressions[1], ['token', 'user', 'object', 'subject', 'roles', 'request', 'trust_resolver']]
             );
 
         (new ExpressionCacheWarmer($expressions, $expressionLang))->warmUp('');
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
index 8871a3346bbd..25d5958c82dd 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
@@ -29,7 +29,7 @@ public function testNoVoters()
         $container = new ContainerBuilder();
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array())
+            ->addArgument([])
         ;
 
         $compilerPass = new AddSecurityVotersPass();
@@ -41,7 +41,7 @@ public function testThatSecurityVotersAreProcessedInPriorityOrder()
         $container = new ContainerBuilder();
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array())
+            ->addArgument([])
         ;
         $container
             ->register('no_prio_service', Voter::class)
@@ -49,15 +49,15 @@ public function testThatSecurityVotersAreProcessedInPriorityOrder()
         ;
         $container
             ->register('lowest_prio_service', Voter::class)
-            ->addTag('security.voter', array('priority' => 100))
+            ->addTag('security.voter', ['priority' => 100])
         ;
         $container
             ->register('highest_prio_service', Voter::class)
-            ->addTag('security.voter', array('priority' => 200))
+            ->addTag('security.voter', ['priority' => 200])
         ;
         $container
             ->register('zero_prio_service', Voter::class)
-            ->addTag('security.voter', array('priority' => 0))
+            ->addTag('security.voter', ['priority' => 0])
         ;
         $compilerPass = new AddSecurityVotersPass();
         $compilerPass->process($container);
@@ -78,7 +78,7 @@ public function testVoterMissingInterface()
         $container = new ContainerBuilder();
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array())
+            ->addArgument([])
         ;
         $container
             ->register('without_interface', 'stdClass')
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
index 2f977d397d46..7dd8fbc12d0d 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
@@ -29,11 +29,11 @@ abstract protected function getFileExtension();
     public function testRolesHierarchy()
     {
         $container = $this->getContainer('container1');
-        $this->assertEquals(array(
-            'ROLE_ADMIN' => array('ROLE_USER'),
-            'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
-            'ROLE_REMOTE' => array('ROLE_USER', 'ROLE_ADMIN'),
-        ), $container->getParameter('security.role_hierarchy.roles'));
+        $this->assertEquals([
+            'ROLE_ADMIN' => ['ROLE_USER'],
+            'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
+            'ROLE_REMOTE' => ['ROLE_USER', 'ROLE_ADMIN'],
+        ], $container->getParameter('security.role_hierarchy.roles'));
     }
 
     public function testUserProviders()
@@ -42,30 +42,30 @@ public function testUserProviders()
 
         $providers = array_values(array_filter($container->getServiceIds(), function ($key) { return 0 === strpos($key, 'security.user.provider.concrete'); }));
 
-        $expectedProviders = array(
+        $expectedProviders = [
             'security.user.provider.concrete.default',
             'security.user.provider.concrete.digest',
             'security.user.provider.concrete.basic',
             'security.user.provider.concrete.service',
             'security.user.provider.concrete.chain',
-        );
+        ];
 
-        $this->assertEquals(array(), array_diff($expectedProviders, $providers));
-        $this->assertEquals(array(), array_diff($providers, $expectedProviders));
+        $this->assertEquals([], array_diff($expectedProviders, $providers));
+        $this->assertEquals([], array_diff($providers, $expectedProviders));
 
         // chain provider
-        $this->assertEquals(array(new IteratorArgument(array(
+        $this->assertEquals([new IteratorArgument([
             new Reference('security.user.provider.concrete.service'),
             new Reference('security.user.provider.concrete.basic'),
-        ))), $container->getDefinition('security.user.provider.concrete.chain')->getArguments());
+        ])], $container->getDefinition('security.user.provider.concrete.chain')->getArguments());
     }
 
     public function testFirewalls()

10000
     {
         $container = $this->getContainer('container1');
         $arguments = $container->getDefinition('security.firewall.map')->getArguments();
-        $listeners = array();
-        $configs = array();
+        $listeners = [];
+        $configs = [];
         foreach (array_keys($arguments[1]->getValues()) as $contextId) {
             $contextDef = $container->getDefinition($contextId);
             $arguments = $contextDef->getArguments();
@@ -80,14 +80,14 @@ public function testFirewalls()
         $configs[0][2] = strtolower($configs[0][2]);
         $configs[2][2] = strtolower($configs[2][2]);
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 'simple',
                 'security.user_checker',
                 '.security.request_matcher.6tndozi',
                 false,
-            ),
-            array(
+            ],
+            [
                 'secure',
                 'security.user_checker',
                 null,
@@ -98,7 +98,7 @@ public function testFirewalls()
                 'security.authentication.form_entry_point.secure',
                 null,
                 null,
-                array(
+                [
                     'switch_user',
                     'x509',
                     'remote_user',
@@ -106,14 +106,14 @@ public function testFirewalls()
                     'http_basic',
                     'remember_me',
                     'anonymous',
-                ),
-                array(
+                ],
+                [
                     'parameter' => '_switch_user',
                     'role' => 'ROLE_ALLOWED_TO_SWITCH',
                     'stateless' => false,
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'host',
                 'security.user_checker',
                 '.security.request_matcher.and0kk1',
@@ -124,13 +124,13 @@ public function testFirewalls()
                 'security.authentication.basic_entry_point.host',
                 null,
                 null,
-                array(
+                [
                     'http_basic',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-            array(
+            ],
+            [
                 'with_user_checker',
                 'app.user_checker',
                 null,
@@ -141,13 +141,13 @@ public function testFirewalls()
                 'security.authentication.basic_entry_point.with_user_checker',
                 null,
                 null,
-                array(
+                [
                     'http_basic',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-            array(
+            ],
+            [
                 'simple_auth',
                 'security.user_checker',
                 null,
@@ -158,17 +158,17 @@ public function testFirewalls()
                 'security.authentication.form_entry_point.simple_auth',
                 null,
                 null,
-                array(
+                [
                     'simple_form',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-        ), $configs);
+            ],
+        ], $configs);
 
-        $this->assertEquals(array(
-            array(),
-            array(
+        $this->assertEquals([
+            [],
+            [
                 'security.channel_listener',
                 'security.authentication.listener.x509.secure',
                 'security.authentication.listener.remote_user.secure',
@@ -178,29 +178,29 @@ public function testFirewalls()
                 'security.authentication.listener.anonymous.secure',
                 'security.authentication.switchuser_listener.secure',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.0',
                 'security.authentication.listener.basic.host',
                 'security.authentication.listener.anonymous.host',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.1',
                 'security.authentication.listener.basic.with_user_checker',
                 'security.authentication.listener.anonymous.with_user_checker',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.2',
                 'security.authentication.listener.simple_form.simple_auth',
                 'security.authentication.listener.anonymous.simple_auth',
                 'security.access_listener',
-            ),
-        ), $listeners);
+            ],
+        ], $listeners);
 
         $this->assertFalse($container->hasAlias('Symfony\Component\Security\Core\User\UserCheckerInterface', 'No user checker alias is registered when custom user checker services are registered'));
     }
@@ -210,7 +210,7 @@ public function testFirewallRequestMatchers()
         $container = $this->getContainer('container1');
 
         $arguments = $container->getDefinition('security.firewall.map')->getArguments();
-        $matchers = array();
+        $matchers = [];
 
         foreach ($arguments[1]->getValues() as $reference) {
             if ($reference instanceof Reference) {
@@ -219,16 +219,16 @@ public function testFirewallRequestMatchers()
             }
         }
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 '/login',
-            ),
-            array(
+            ],
+            [
                 '/test',
                 'foo\\.example\\.org',
-                array('GET', 'POST'),
-            ),
-        ), $matchers);
+                ['GET', 'POST'],
+            ],
+        ], $matchers);
     }
 
     public function testUserCheckerAliasIsRegistered()
@@ -243,14 +243,14 @@ public function testAccess()
     {
         $container = $this->getContainer('container1');
 
-        $rules = array();
+        $rules = [];
         foreach ($container->getDefinition('security.access_map')->getMethodCalls() as $call) {
             if ('add' == $call[0]) {
-                $rules[] = array((string) $call[1][0], $call[1][1], $call[1][2]);
+                $rules[] = [(string) $call[1][0], $call[1][1], $call[1][2]];
             }
         }
 
-        $matcherIds = array();
+        $matcherIds = [];
         foreach ($rules as list($matcherId, $attributes, $channel)) {
             $requestMatcher = $container->getDefinition($matcherId);
 
@@ -259,17 +259,17 @@ public function testAccess()
 
             $i = \count($matcherIds);
             if (1 === $i) {
-                $this->assertEquals(array('ROLE_USER'), $attributes);
+                $this->assertEquals(['ROLE_USER'], $attributes);
                 $this->assertEquals('https', $channel);
                 $this->assertEquals(
-                    array('/blog/524', null, array('GET', 'POST')),
+                    ['/blog/524', null, ['GET', 'POST']],
                     $requestMatcher->getArguments()
                 );
             } elseif (2 === $i) {
-                $this->assertEquals(array('IS_AUTHENTICATED_ANONYMOUSLY'), $attributes);
+                $this->assertEquals(['IS_AUTHENTICATED_ANONYMOUSLY'], $attributes);
                 $this->assertNull($channel);
                 $this->assertEquals(
-                    array('/blog/.*'),
+                    ['/blog/.*'],
                     $requestMatcher->getArguments()
                 );
             } elseif (3 === $i) {
@@ -284,22 +284,22 @@ public function testMerge()
     {
         $container = $this->getContainer('merge');
 
-        $this->assertEquals(array(
-            'FOO' => array('MOO'),
-            'ADMIN' => array('USER'),
-        ), $container->getParameter('security.role_hierarchy.roles'));
+        $this->assertEquals([
+            'FOO' => ['MOO'],
+            'ADMIN' => ['USER'],
+        ], $container->getParameter('security.role_hierarchy.roles'));
     }
 
     public function testEncoders()
     {
         $container = $this->getContainer('container1');
 
-        $this->assertEquals(array(array(
-            'JMS\FooBundle\Entity\User1' => array(
+        $this->assertEquals([[
+            'JMS\FooBundle\Entity\User1' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder',
-                'arguments' => array(false),
-            ),
-            'JMS\FooBundle\Entity\User2' => array(
+                'arguments' => [false],
+            ],
+            'JMS\FooBundle\Entity\User2' => [
                 'algorithm' => 'sha1',
                 'encode_as_base64' => false,
                 'iterations' => 5,
@@ -310,8 +310,8 @@ public function testEncoders()
                 'memory_cost' => null,
                 'time_cost' => null,
                 'threads' => null,
-            ),
-            'JMS\FooBundle\Entity\User3' => array(
+            ],
+            'JMS\FooBundle\Entity\User3' => [
                 'algorithm' => 'md5',
                 'hash_algorithm' => 'sha512',
                 'key_length' => 40,
@@ -322,17 +322,17 @@ public function testEncoders()
                 'memory_cost' => null,
                 'time_cost' => null,
                 'threads' => null,
-            ),
+            ],
             'JMS\FooBundle\Entity\User4' => new Reference('security.encoder.foo'),
-            'JMS\FooBundle\Entity\User5' => array(
+            'JMS\FooBundle\Entity\User5' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Pbkdf2PasswordEncoder',
-                'arguments' => array('sha1', false, 5, 30),
-            ),
-            'JMS\FooBundle\Entity\User6' => array(
+                'arguments' => ['sha1', false, 5, 30],
+            ],
+            'JMS\FooBundle\Entity\User6' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder',
-                'arguments' => array(15),
-            ),
-        )), $container->getDefinition('security.encoder_factory.generic')->getArguments());
+                'arguments' => [15],
+            ],
+        ]], $container->getDefinition('security.encoder_factory.generic')->getArguments());
     }
 
     public function testEncodersWithLibsodium()
@@ -343,12 +343,12 @@ public function testEncodersWithLibsodium()
 
         $container = $this->getContainer('argon2i_encoder');
 
-        $this->assertEquals(array(array(
-            'JMS\FooBundle\Entity\User1' => array(
+        $this->assertEquals([[
+            'JMS\FooBundle\Entity\User1' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder',
-                'arguments' => array(false),
-            ),
-            'JMS\FooBundle\Entity\User2' => array(
+                'arguments' => [false],
+            ],
+            'JMS\FooBundle\Entity\User2' => [
                 'algorithm' => 'sha1',
                 'encode_as_base64' => false,
                 'iterations' => 5,
@@ -359,8 +359,8 @@ public function testEncodersWithLibsodium()
                 'memory_cost' => null,
                 'time_cost' => null,
                 'threads' => null,
-            ),
-            'JMS\FooBundle\Entity\User3' => array(
+            ],
+            'JMS\FooBundle\Entity\User3' => [
                 'algorithm' => 'md5',
                 'hash_algorithm' => 'sha512',
                 'key_length' => 40,
@@ -371,21 +371,21 @@ public function testEncodersWithLibsodium()
                 'memory_cost' => null,
                 'time_cost' => null,
                 'threads' => null,
-            ),
+            ],
             'JMS\FooBundle\Entity\User4' => new Reference('security.encoder.foo'),
-            'JMS\FooBundle\Entity\User5' => array(
+            'JMS\FooBundle\Entity\User5' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Pbkdf2PasswordEncoder',
-                'arguments' => array('sha1', false, 5, 30),
-            ),
-            'JMS\FooBundle\Entity\User6' => array(
+                'arguments' => ['sha1', false, 5, 30],
+            ],
+            'JMS\FooBundle\Entity\User6' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder',
-                'arguments' => array(15),
-            ),
-            'JMS\FooBundle\Entity\User7' => array(
+                'arguments' => [15],
+            ],
+            'JMS\FooBundle\Entity\User7' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Argon2iPasswordEncoder',
-                'arguments' => array(256, 1, 2),
-            ),
-        )), $container->getDefinition('security.encoder_factory.generic')->getArguments());
+                'arguments' => [256, 1, 2],
+            ],
+        ]], $container->getDefinition('security.encoder_factory.generic')->getArguments());
     }
 
     public function testRememberMeThrowExceptionsDefault()
@@ -498,8 +498,8 @@ protected function getContainer($file)
         $bundle->build($container); // Attach all default factories
         $this->getLoader($container)->load($file);
 
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         return $container;
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/argon2i_encoder.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/argon2i_encoder.php
index ec40e29de120..88543b7da95d 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/argon2i_encoder.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/argon2i_encoder.php
@@ -2,13 +2,13 @@
 
 $this->load('container1.php', $container);
 
-$container->loadFromExtension('security', array(
-    'encoders' => array(
-        'JMS\FooBundle\Entity\User7' => array(
+$container->loadFromExtension('security', [
+    'encoders' => [
+        'JMS\FooBundle\Entity\User7' => [
             'algorithm' => 'argon2i',
             'memory_cost' => 256,
             'time_cost' => 1,
             'threads' => 2,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
index a0f45bb109f9..4560f3f8b9af 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
@@ -1,67 +1,67 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'encoders' => array(
+$container->loadFromExtension('security', [
+    'encoders' => [
         'JMS\FooBundle\Entity\User1' => 'plaintext',
-        'JMS\FooBundle\Entity\User2' => array(
+        'JMS\FooBundle\Entity\User2' => [
             'algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
-        ),
-        'JMS\FooBundle\Entity\User3' => array(
+        ],
+        'JMS\FooBundle\Entity\User3' => [
             'algorithm' => 'md5',
-        ),
-        'JMS\FooBundle\Entity\User4' => array(
+        ],
+        'JMS\FooBundle\Entity\User4' => [
             'id' => 'security.encoder.foo',
-        ),
-        'JMS\FooBundle\Entity\User5' => array(
+        ],
+        'JMS\FooBundle\Entity\User5' => [
             'algorithm' => 'pbkdf2',
             'hash_algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
             'key_length' => 30,
-        ),
-        'JMS\FooBundle\Entity\User6' => array(
+        ],
+        'JMS\FooBundle\Entity\User6' => [
             'algorithm' => 'bcrypt',
             'cost' => 15,
-        ),
-    ),
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-        'digest' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'),
-                ),
-            ),
-        ),
-        'basic' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'),
-                    'bar' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => array('ROLE_USER', 'ROLE_ADMIN')),
-                ),
-            ),
-        ),
-        'service' => array(
+        ],
+    ],
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+        'digest' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'],
+                ],
+            ],
+        ],
+        'basic' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'],
+                    'bar' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => ['ROLE_USER', 'ROLE_ADMIN']],
+                ],
+            ],
+        ],
+        'service' => [
             'id' => 'user.manager',
-        ),
-        'chain' => array(
-            'chain' => array(
-                'providers' => array('service', 'basic'),
-            ),
-        ),
-    ),
+        ],
+        'chain' => [
+            'chain' => [
+                'providers' => ['service', 'basic'],
+            ],
+        ],
+    ],
 
-    'firewalls' => array(
-        'simple' => array('provider' => 'default', 'pattern' => '/login', 'security' => false),
-        'secure' => array('stateless' => true,
+    'firewalls' => [
+        'simple' => ['provider' => 'default', 'pattern' => '/login', 'security' => false],
+        'secure' => ['stateless' => true,
             'provider' => 'default',
             'http_basic' => true,
             'form_login' => true,
@@ -70,39 +70,39 @@
             'x509' => true,
             'remote_user' => true,
             'logout' => true,
-            'remember_me' => array('secret' => 'TheSecret'),
+            'remember_me' => ['secret' => 'TheSecret'],
             'user_checker' => null,
-        ),
-        'host' => array(
+        ],
+        'host' => [
             'provider' => 'default',
             'pattern' => '/test',
             'host' => 'foo\\.example\\.org',
-            'methods' => array('GET', 'POST'),
+            'methods' => ['GET', 'POST'],
             'anonymous' => true,
             'http_basic' => true,
-        ),
-        'with_user_checker' => array(
+        ],
+        'with_user_checker' => [
             'provider' => 'default',
             'user_checker' => 'app.user_checker',
             'anonymous' => true,
             'http_basic' => true,
-        ),
-        'simple_auth' => array(
+        ],
+        'simple_auth' => [
             'provider' => 'default',
             'anonymous' => true,
-            'simple_form' => array('authenticator' => 'simple_authenticator'),
-        ),
-    ),
+            'simple_form' => ['authenticator' => 'simple_authenticator'],
+        ],
+    ],
 
-    'access_control' => array(
-        array('path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => array('get', 'POST')),
-        array('path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'),
-        array('path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"),
-    ),
+    'access_control' => [
+        ['path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => ['get', 'POST']],
+        ['path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'],
+        ['path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"],
+    ],
 
-    'role_hierarchy' => array(
+    'role_hierarchy' => [
         'ROLE_ADMIN' => 'ROLE_USER',
-        'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
+        'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
         'ROLE_REMOTE' => 'ROLE_USER,ROLE_ADMIN',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_provider.php
index ff9d9f6b89df..68b8439a7de5 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_provider.php
@@ -1,24 +1,24 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => $memory = array(
-                'users' => array('foo' => array('password' => 'foo', 'roles' => 'ROLE_USER')),
-            ),
-        ),
-        'with-dash' => array(
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => $memory = [
+                'users' => ['foo' => ['password' => 'foo', 'roles' => 'ROLE_USER']],
+            ],
+        ],
+        'with-dash' => [
             'memory' => $memory,
-        ),
-    ),
-    'firewalls' => array(
-        'main' => array(
+        ],
+    ],
+    'firewalls' => [
+        'main' => [
             'provider' => 'default',
             'form_login' => true,
-        ),
-        'other' => array(
+        ],
+        'other' => [
             'provider' => 'with-dash',
             'form_login' => true,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_undefined_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_undefined_provider.php
index 78d461efe38d..7c811cae1a4d 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_undefined_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/firewall_undefined_provider.php
@@ -1,17 +1,17 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array('foo' => array('password' => 'foo', 'roles' => 'ROLE_USER')),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'main' => array(
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => ['foo' => ['password' => 'foo', 'roles' => 'ROLE_USER']],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'main' => [
             'provider' => 'undefined',
             'form_login' => true,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_provider.php
index d7f1cd6973f3..0a6a79f5f208 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_provider.php
@@ -1,16 +1,16 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array('foo' => array('password' => 'foo', 'roles' => 'ROLE_USER')),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'main' => array(
-            'form_login' => array('provider' => 'default'),
-        ),
-    ),
-));
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => ['foo' => ['password' => 'foo', 'roles' => 'ROLE_USER']],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'main' => [
+            'form_login' => ['provider' => 'default'],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_undefined_provider.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_undefined_provider.php
index da54f025d1a7..cc0b776e432c 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_undefined_provider.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/listener_undefined_provider.php
@@ -1,16 +1,16 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array('foo' => array('password' => 'foo', 'roles' => 'ROLE_USER')),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'main' => array(
-            'form_login' => array('provider' => 'undefined'),
-        ),
-    ),
-));
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => ['foo' => ['password' => 'foo', 'roles' => 'ROLE_USER']],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'main' => [
+            'form_login' => ['provider' => 'undefined'],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
index 50ef504ea4d4..cc8b15ffdd9e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
@@ -2,19 +2,19 @@
 
 $this->load('merge_import.php', $container);
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array('id' => 'foo'),
-    ),
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => ['id' => 'foo'],
+    ],
 
-    'firewalls' => array(
-        'main' => array(
+    'firewalls' => [
+        'main' => [
             'form_login' => false,
             'http_basic' => null,
-        ),
-    ),
+        ],
+    ],
 
-    'role_hierarchy' => array(
-        'FOO' => array('MOO'),
-    ),
-));
+    'role_hierarchy' => [
+        'FOO' => ['MOO'],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge_import.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge_import.php
index 912b9127ef36..c85937d6ea2c 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge_import.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge_import.php
@@ -1,15 +1,15 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'firewalls' => array(
-        'main' => array(
-            'form_login' => array(
+$container->loadFromExtension('security', [
+    'firewalls' => [
+        'main' => [
+            'form_login' => [
                 'login_path' => '/login',
-            ),
-        ),
-    ),
-    'role_hierarchy' => array(
+            ],
+        ],
+    ],
+    'role_hierarchy' => [
         'FOO' => 'BAR',
         'ADMIN' => 'USER',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/no_custom_user_checker.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/no_custom_user_checker.php
index 3889752f8f92..7565452eb528 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/no_custom_user_checker.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/no_custom_user_checker.php
@@ -1,18 +1,18 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-    ),
-    'firewalls' => array(
-        'simple' => array('pattern' => '/login', 'security' => false),
-        'secure' => array(
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+    ],
+    'firewalls' => [
+        'simple' => ['pattern' => '/login', 'security' => false],
+        'secure' => [
             'stateless' => true,
             'http_basic' => true,
             'form_login' => true,
@@ -21,8 +21,8 @@
             'x509' => true,
             'remote_user' => true,
             'logout' => true,
-            'remember_me' => array('secret' => 'TheSecret'),
+            'remember_me' => ['secret' => 'TheSecret'],
             'user_checker' => null,
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/remember_me_options.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/remember_me_options.php
index e0ca4f6dedf3..cfbef609a18d 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/remember_me_options.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/remember_me_options.php
@@ -1,18 +1,18 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array('id' => 'foo'),
-    ),
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => ['id' => 'foo'],
+    ],
 
-    'firewalls' => array(
-        'main' => array(
+    'firewalls' => [
+        'main' => [
             'form_login' => true,
-            'remember_me' => array(
+            'remember_me' => [
                 'secret' => 'TheSecret',
                 'catch_exceptions' => false,
                 'token_provider' => 'token_provider_id',
-            ),
-        ),
-    ),
-));
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/MainConfigurationTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/MainConfigurationTest.php
index 24447ee89abe..88565a47cd9d 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/MainConfigurationTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/MainConfigurationTest.php
@@ -21,31 +21,31 @@ class MainConfigurationTest extends TestCase
      * The minimal, required config needed to not have any required validation
      * issues.
      */
-    protected static $minimalConfig = array(
-        'providers' => array(
-            'stub' => array(
+    protected static $minimalConfig = [
+        'providers' => [
+            'stub' => [
                 'id' => 'foo',
-            ),
-        ),
-        'firewalls' => array(
-            'stub' => array(),
-        ),
-    );
+            ],
+        ],
+        'firewalls' => [
+            'stub' => [],
+        ],
+    ];
 
     /**
      * @expectedException \Symfony\Component\Config\Definition\Exception\InvalidConfigurationException
      */
     public function testNoConfigForProvider()
     {
-        $config = array(
-            'providers' => array(
-                'stub' => array(),
-            ),
-        );
+        $config = [
+            'providers' => [
+                'stub' => [],
+            ],
+        ];
 
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processor->processConfiguration($configuration, array($config));
+        $configuration = new MainConfiguration([], []);
+        $processor->processConfiguration($configuration, [$config]);
     }
 
     /**
@@ -53,37 +53,37 @@ public function testNoConfigForProvider()
      */
     public function testManyConfigForProvider()
     {
-        $config = array(
-            'providers' => array(
-                'stub' => array(
+        $config = [
+            'providers' => [
+                'stub' => [
                     'id' => 'foo',
-                    'chain' => array(),
-                ),
-            ),
-        );
+                    'chain' => [],
+                ],
+            ],
+        ];
 
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processor->processConfiguration($configuration, array($config));
+        $configuration = new MainConfiguration([], []);
+        $processor->processConfiguration($configuration, [$config]);
     }
 
     public function testCsrfAliases()
     {
-        $config = array(
-            'firewalls' => array(
-                'stub' => array(
-                    'logout' => array(
+        $config = [
+            'firewalls' => [
+                'stub' => [
+                    'logout' => [
                         'csrf_token_generator' => 'a_token_generator',
                         'csrf_token_id' => 'a_token_id',
-                    ),
-                ),
-            ),
-        );
+                    ],
+                ],
+            ],
+        ];
         $config = array_merge(static::$minimalConfig, $config);
 
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processedConfig = $processor->processConfiguration($configuration, array($config));
+        $configuration = new MainConfiguration([], []);
+        $processedConfig = $processor->processConfiguration($configuration, [$config]);
         $this->assertArrayHasKey('csrf_token_generator', $processedConfig['firewalls']['stub']['logout']);
         $this->assertEquals('a_token_generator', $processedConfig['firewalls']['stub']['logout']['csrf_token_generator']);
         $this->assertArrayHasKey('csrf_token_id', $processedConfig['firewalls']['stub']['logout']);
@@ -93,26 +93,26 @@ public function testCsrfAliases()
     public function testDefaultUserCheckers()
     {
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processedConfig = $processor->processConfiguration($configuration, array(static::$minimalConfig));
+        $configuration = new MainConfiguration([], []);
+        $processedConfig = $processor->processConfiguration($configuration, [static::$minimalConfig]);
 
         $this->assertEquals('security.user_checker', $processedConfig['firewalls']['stub']['user_checker']);
     }
 
     public function testUserCheckers()
     {
-        $config = array(
-            'firewalls' => array(
-                'stub' => array(
+        $config = [
+            'firewalls' => [
+                'stub' => [
                     'user_checker' => 'app.henk_checker',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $config = array_merge(static::$minimalConfig, $config);
 
         $processor = new Processor();
-        $configuration = new MainConfiguration(array(), array());
-        $processedConfig = $processor->processConfiguration($configuration, array($config));
+        $configuration = new MainConfiguration([], []);
+        $processedConfig = $processor->processConfiguration($configuration, [$config]);
 
         $this->assertEquals('app.henk_checker', $processedConfig['firewalls']['stub']['user_checker']);
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
index 0a92a5877c95..26128bc53233 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
@@ -31,20 +31,20 @@ public function testInvalidCheckPath()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/secured_area/.*',
-                    'form_login' => array(
+                    'form_login' => [
                         'check_path' => '/some_area/login_check',
-                    ),
-                ),
-            ),
-        ));
+                    ],
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -57,17 +57,17 @@ public function testFirewallWithoutAuthenticationListener()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -83,18 +83,18 @@ public function testFirewallWithInvalidUserProvider()
         $extension = $container->getExtension('security');
         $extension->addUserProviderFactory(new DummyProvider());
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'my_foo' => array('foo' => array()),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'my_foo' => ['foo' => []],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
-                    'http_basic' => array(),
-                ),
-            ),
-        ));
+                    'http_basic' => [],
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -103,20 +103,20 @@ public function testDisableRoleHierarchyVoter()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
             'role_hierarchy' => null,
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
                     'http_basic' => null,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
 
@@ -127,46 +127,46 @@ public function testGuardHandlerIsPassedStatelessFirewalls()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '^/admin',
                     'http_basic' => null,
-                ),
-                'stateless_firewall' => array(
+                ],
+                'stateless_firewall' => [
                     'pattern' => '/.*',
                     'stateless' => true,
                     'http_basic' => null,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
         $definition = $container->getDefinition('security.authentication.guard_handler');
-        $this->assertSame(array('stateless_firewall'), $definition->getArgument(2));
+        $this->assertSame(['stateless_firewall'], $definition->getArgument(2));
     }
 
     public function testSwitchUserNotStatelessOnStatelessFirewall()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'stateless' => true,
                     'http_basic' => null,
                     'switch_user' => true,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
 
@@ -176,18 +176,18 @@ public function testSwitchUserNotStatelessOnStatelessFirewall()
     public function testPerListenerProvider()
     {
         $container = $this->getRawContainer();
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'first' => array('id' => 'foo'),
-                'second' => array('id' => 'bar'),
-            ),
-
-            'firewalls' => array(
-                'default' => array(
-                    'http_basic' => array('provider' => 'second'),
-                ),
-            ),
-        ));
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'first' => ['id' => 'foo'],
+                'second' => ['id' => 'bar'],
+            ],
+
+            'firewalls' => [
+                'default' => [
+                    'http_basic' => ['provider' => 'second'],
+                ],
+            ],
+        ]);
 
         $container->compile();
         $this->addToAssertionCount(1);
@@ -200,19 +200,19 @@ public function testPerListenerProvider()
     public function testMissingProviderForListener()
     {
         $container = $this->getRawContainer();
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'first' => array('id' => 'foo'),
-                'second' => array('id' => 'bar'),
-            ),
-
-            'firewalls' => array(
-                'ambiguous' => array(
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'first' => ['id' => 'foo'],
+                'second' => ['id' => 'bar'],
+            ],
+
+            'firewalls' => [
+                'ambiguous' => [
                     'http_basic' => true,
-                    'form_login' => array('provider' => 'second'),
-                ),
-            ),
-        ));
+                    'form_login' => ['provider' => 'second'],
+                ],
+            ],
+        ]);
 
         $container->compile();
     }
@@ -220,19 +220,19 @@ public function testMissingProviderForListener()
     public function testPerListenerProviderWithRememberMe()
     {
         $container = $this->getRawContainer();
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'first' => array('id' => 'foo'),
-                'second' => array('id' => 'bar'),
-            ),
-
-            'firewalls' => array(
-                'default' => array(
-                    'form_login' => array('provider' => 'second'),
-                    'remember_me' => array('secret' => 'baz'),
-                ),
-            ),
-        ));
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'first' => ['id' => 'foo'],
+                'second' => ['id' => 'bar'],
+            ],
+
+            'firewalls' => [
+                'default' => [
+                    'form_login' => ['provider' => 'second'],
+                    'remember_me' => ['secret' => 'baz'],
+                ],
+            ],
+        ]);
 
         $container->compile();
         $this->addToAssertionCount(1);
@@ -244,20 +244,20 @@ public function testRegisterRequestMatchersWithAllowIfExpression()
 
         $rawExpression = "'foo' == 'bar' or 1 in [1, 3, 3]";
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
-            'firewalls' => array(
-                'some_firewall' => array(
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
-                    'http_basic' => array(),
-                ),
-            ),
-            'access_control' => array(
-                array('path' => '/', 'allow_if' => $rawExpression),
-            ),
-        ));
+                    'http_basic' => [],
+                ],
+            ],
+            'access_control' => [
+                ['path' => '/', 'allow_if' => $rawExpression],
+            ],
+        ]);
 
         $container->compile();
         $accessMap = $container->getDefinition('security.access_map');
@@ -274,7 +274,7 @@ public function testRegisterRequestMatchersWithAllowIfExpression()
 
         $this->assertTrue($container->hasDefinition('security.cache_warmer.expression'));
         $this->assertEquals(
-            new IteratorArgument(array(new Reference($expressionId))),
+            new IteratorArgument([new Reference($expressionId)]),
             $container->getDefinition('security.cache_warmer.expression')->getArgument(0)
         );
     }
@@ -282,17 +282,17 @@ public function testRegisterRequestMatchersWithAllowIfExpression()
     public function testRemovesExpressionCacheWarmerDefinitionIfNoExpressions()
     {
         $container = $this->getRawContainer();
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
-            'firewalls' => array(
-                'some_firewall' => array(
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
-                    'http_basic' => array(),
-                ),
-            ),
-        ));
+                    'http_basic' => [],
+                ],
+            ],
+        ]);
         $container->compile();
 
         $this->assertFalse($container->hasDefinition('security.cache_warmer.expression'));
@@ -302,18 +302,18 @@ public function testRegisterTheUserProviderAlias()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'default' => array('id' => 'foo'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'default' => ['id' => 'foo'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
                     'http_basic' => null,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $container->compile();
 
@@ -324,19 +324,19 @@ public function testDoNotRegisterTheUserProviderAliasWithMultipleProviders()
     {
         $container = $this->getRawContainer();
 
-        $container->loadFromExtension('security', array(
-            'providers' => array(
-                'first' => array('id' => 'foo'),
-                'second' => array('id' => 'bar'),
-            ),
+        $container->loadFromExtension('security', [
+            'providers' => [
+                'first' => ['id' => 'foo'],
+                'second' => ['id' => 'bar'],
+            ],
 
-            'firewalls' => array(
-                'some_firewall' => array(
+            'firewalls' => [
+                'some_firewall' => [
                     'pattern' => '/.*',
-                    'http_basic' => array('provider' => 'second'),
-                ),
-            ),
-        ));
+                    'http_basic' => ['provider' => 'second'],
+                ],
+            ],
+        ]);
 
         $container->compile();
 
@@ -352,8 +352,8 @@ protected function getRawContainer()
         $bundle = new SecurityBundle();
         $bundle->build($container);
 
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
 
         return $container;
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AutowiringTypesTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AutowiringTypesTest.php
index 25a70577b2c1..31d296e48ad8 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AutowiringTypesTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/AutowiringTypesTest.php
@@ -18,19 +18,19 @@ class AutowiringTypesTest extends WebTestCase
 {
     public function testAccessDecisionManagerAutowiring()
     {
-        static::bootKernel(array('debug' => false));
+        static::bootKernel(['debug' => false]);
 
         $autowiredServices = static::$container->get('test.autowiring_types.autowired_services');
         $this->assertInstanceOf(AccessDecisionManager::class, $autowiredServices->getAccessDecisionManager(), 'The security.access.decision_manager service should be injected in debug mode');
 
-        static::bootKernel(array('debug' => true));
+        static::bootKernel(['debug' => true]);
 
         $autowiredServices = static::$container->get('test.autowiring_types.autowired_services');
         $this->assertInstanceOf(TraceableAccessDecisionManager::class, $autowiredServices->getAccessDecisionManager(), 'The debug.security.access.decision_manager service should be injected in non-debug mode');
     }
 
-    protected static function createKernel(array $options = array())
+    protected static function createKernel(array $options = [])
     {
-        return parent::createKernel(array('test_case' => 'AutowiringTypes') + $options);
+        return parent::createKernel(['test_case' => 'AutowiringTypes'] + $options);
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LogoutTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LogoutTest.php
index bd3692bf2c7c..aaf979a5846d 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LogoutTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/LogoutTest.php
@@ -15,12 +15,12 @@ class LogoutTest extends WebTestCase
 {
     public function testSessionLessRememberMeLogout()
     {
-        $client = $this->createClient(array('test_case' => 'RememberMeLogout', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'RememberMeLogout', 'root_config' => 'config.yml']);
 
-        $client->request('POST', '/login', array(
+        $client->request('POST', '/login', [
             '_username' => 'johannes',
             '_password' => 'test',
-        ));
+        ]);
 
         $cookieJar = $client->getCookieJar();
         $cookieJar->expire(session_name());
@@ -34,13 +34,13 @@ public function testSessionLessRememberMeLogout()
 
     public function testCsrfTokensAreClearedOnLogout()
     {
-        $client = $this->createClient(array('test_case' => 'LogoutWithoutSessionInvalidation', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'LogoutWithoutSessionInvalidation', 'root_config' => 'config.yml']);
         static::$container->get('security.csrf.token_storage')->setToken('foo', 'bar');
 
-        $client->request('POST', '/login', array(
+        $client->request('POST', '/login', [
             '_username' => 'johannes',
             '_password' => 'test',
-        ));
+        ]);
 
         $this->assertTrue(static::$container->get('security.csrf.token_storage')->hasToken('foo'));
         $this->assertSame('bar', static::$container->get('security.csrf.token_storage')->getToken('foo'));
@@ -52,9 +52,9 @@ public function testCsrfTokensAreClearedOnLogout()
 
     public function testAccessControlDoesNotApplyOnLogout()
     {
-        $client = $this->createClient(array('test_case' => 'LogoutAccess', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'LogoutAccess', 'root_config' => 'config.yml']);
 
-        $client->request('POST', '/login', array('_username' => 'johannes', '_password' => 'test'));
+        $client->request('POST', '/login', ['_username' => 'johannes', '_password' => 'test']);
         $client->request('GET', '/logout');
 
         $this->assertRedirect($client->getResponse(), '/');
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/MissingUserProviderTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/MissingUserProviderTest.php
index f1efe6492821..378ff26b381e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/MissingUserProviderTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/MissingUserProviderTest.php
@@ -19,11 +19,11 @@ class MissingUserProviderTest extends WebTestCase
      */
     public function testUserProviderIsNeeded()
     {
-        $client = $this->createClient(array('test_case' => 'MissingUserProvider', 'root_config' => 'config.yml'));
+        $client = $this->createClient(['test_case' => 'MissingUserProvider', 'root_config' => 'config.yml']);
 
-        $client->request('GET', '/', array(), array(), array(
+        $client->request('GET', '/', [], [], [
             'PHP_AUTH_USER' => 'username',
             'PHP_AUTH_PW' => 'pa$$word',
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
index 4245d07687db..faec77550b2b 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
@@ -32,12 +32,12 @@ class UserPasswordEncoderCommandTest extends WebTestCase
 
     public function testEncodePasswordEmptySalt()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Symfony\Component\Security\Core\User\User',
             '--empty-salt' => true,
-        ), array('decorated' => false));
+        ], ['decorated' => false]);
         $expected = str_replace("\n", PHP_EOL, file_get_contents(__DIR__.'/app/PasswordEncode/emptysalt.txt'));
 
         $this->assertEquals($expected, $this->passwordEncoderCommandTester->getDisplay());
@@ -45,9 +45,9 @@ public function testEncodePasswordEmptySalt()
 
     public function testEncodeNoPasswordNoInteraction()
     {
-        $statusCode = $this->passwordEncoderCommandTester->execute(array(
+        $statusCode = $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertContains('[ERROR] The password must not be empty.', $this->passwordEncoderCommandTester->getDisplay());
         $this->assertEquals($statusCode, 1);
@@ -55,11 +55,11 @@ public function testEncodeNoPasswordNoInteraction()
 
     public function testEncodePasswordBcrypt()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Custom\Class\Bcrypt\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $output = $this->passwordEncoderCommandTester->getDisplay();
         $this->assertContains('Password encoding succeeded', $output);
@@ -76,11 +76,11 @@ public function testEncodePasswordArgon2i()
             $this->markTestSkipped('Argon2i algorithm not available.');
         }
         $this->setupArgon2i();
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Custom\Class\Argon2i\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $output = $this->passwordEncoderCommandTester->getDisplay();
         $this->assertContains('Password encoding succeeded', $output);
@@ -93,11 +93,11 @@ public function testEncodePasswordArgon2i()
 
     public function testEncodePasswordPbkdf2()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Custom\Class\Pbkdf2\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $output = $this->passwordEncoderCommandTester->getDisplay();
         $this->assertContains('Password encoding succeeded', $output);
@@ -113,10 +113,10 @@ public function testEncodePasswordPbkdf2()
     public function testEncodePasswordOutput()
     {
         $this->passwordEncoderCommandTester->execute(
-            array(
+            [
                 'command' => 'security:encode-password',
                 'password' => 'p@ssw0rd',
-            ), array('interactive' => false)
+            ], ['interactive' => false]
         );
 
         $this->assertContains('Password encoding succeeded', $this->passwordEncoderCommandTester->getDisplay());
@@ -127,12 +127,12 @@ public function testEncodePasswordOutput()
     public function testEncodePasswordEmptySaltOutput()
     {
         $this->passwordEncoderCommandTester->execute(
-            array(
+            [
                 'command' => 'security:encode-password',
                 'password' => 'p@ssw0rd',
                 'user-class' => 'Symfony\Component\Security\Core\User\User',
                 '--empty-salt' => true,
-            )
+            ]
         );
 
         $this->assertContains('Password encoding succeeded', $this->passwordEncoderCommandTester->getDisplay());
@@ -142,11 +142,11 @@ public function testEncodePasswordEmptySaltOutput()
 
     public function testEncodePasswordBcryptOutput()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'p@ssw0rd',
             'user-class' => 'Custom\Class\Bcrypt\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertNotContains(' Generated salt ', $this->passwordEncoderCommandTester->getDisplay());
     }
@@ -158,11 +158,11 @@ public function testEncodePasswordArgon2iOutput()
         }
 
         $this->setupArgon2i();
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'p@ssw0rd',
             'user-class' => 'Custom\Class\Argon2i\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertNotContains(' Generated salt ', $this->passwordEncoderCommandTester->getDisplay());
     }
@@ -176,20 +176,20 @@ public function testEncodePasswordNoConfigForGivenUserClass()
             $this->setExpectedException('\RuntimeException', 'No encoder has been configured for account "Foo\Bar\User".');
         }
 
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
             'user-class' => 'Foo\Bar\User',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
     }
 
     public function testEncodePasswordAsksNonProvidedUserClass()
     {
-        $this->passwordEncoderCommandTester->setInputs(array('Custom\Class\Pbkdf2\User', "\n"));
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->setInputs(['Custom\Class\Pbkdf2\User', "\n"]);
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
-        ), array('decorated' => false));
+        ], ['decorated' => false]);
 
         $this->assertContains(<<<EOTXT
  For which user class would you like to encode a password? [Custom\Class\Bcrypt\User]:
@@ -203,10 +203,10 @@ public function testEncodePasswordAsksNonProvidedUserClass()
 
     public function testNonInteractiveEncodePasswordUsesFirstUserClass()
     {
-        $this->passwordEncoderCommandTester->execute(array(
+        $this->passwordEncoderCommandTester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
 
         $this->assertContains('Encoder used       Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder', $this->passwordEncoderCommandTester->getDisplay());
     }
@@ -218,21 +218,21 @@ public function testNonInteractiveEncodePasswordUsesFirstUserClass()
     public function testThrowsExceptionOnNoConfiguredEncoders()
     {
         $application = new ConsoleApplication();
-        $application->add(new UserPasswordEncoderCommand($this->getMockBuilder(EncoderFactoryInterface::class)->getMock(), array()));
+        $application->add(new UserPasswordEncoderCommand($this->getMockBuilder(EncoderFactoryInterface::class)->getMock(), []));
 
         $passwordEncoderCommand = $application->find('security:encode-password');
 
         $tester = new CommandTester($passwordEncoderCommand);
-        $tester->execute(array(
+        $tester->execute([
             'command' => 'security:encode-password',
             'password' => 'password',
-        ), array('interactive' => false));
+        ], ['interactive' => false]);
     }
 
     protected function setUp()
     {
         putenv('COLUMNS='.(119 + \strlen(PHP_EOL)));
-        $kernel = $this->createKernel(array('test_case' => 'PasswordEncode'));
+        $kernel = $this->createKernel(['test_case' => 'PasswordEncode']);
         $kernel->boot();
 
       
10000
  $application = new Application($kernel);
@@ -250,7 +250,7 @@ protected function tearDown()
     private function setupArgon2i()
     {
         putenv('COLUMNS='.(119 + \strlen(PHP_EOL)));
-        $kernel = $this->createKernel(array('test_case' => 'PasswordEncode', 'root_config' => 'argon2i.yml'));
+        $kernel = $this->createKernel(['test_case' => 'PasswordEncode', 'root_config' => 'argon2i.yml']);
         $kernel->boot();
 
         $application = new Application($kernel);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/MissingUserProvider/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/MissingUserProvider/bundles.php
index 4c22e9d6642a..ccff0d356cab 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/MissingUserProvider/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/MissingUserProvider/bundles.php
@@ -13,8 +13,8 @@
 use Symfony\Bundle\SecurityBundle\SecurityBundle;
 use Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\MissingUserProviderBundle\MissingUserProviderBundle;
 
-return array(
+return [
     new FrameworkBundle(),
     new SecurityBundle(),
     new MissingUserProviderBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
index 520a129716f4..201c2e197083 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
@@ -25,12 +25,12 @@ public function testGetters()
         $config = new FirewallConfig('main', 'user_checker', 'request_matcher');
         $exceptionListener = $this->getExceptionListenerMock();
         $logoutListener = $this->getLogoutListenerMock();
-        $listeners = array(
+        $listeners = [
             $this
                 ->getMockBuilder(ListenerInterface::class)
                 ->disableOriginalConstructor()
                 ->getMock(),
-        );
+        ];
 
         $context = new FirewallContext($listeners, $exceptionListener, $logoutListener, $config);
 
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigEnvironmentPass.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigEnvironmentPass.php
index c6dc157dee18..a17d3facb676 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigEnvironmentPass.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/TwigEnvironmentPass.php
@@ -37,10 +37,10 @@ public function process(ContainerBuilder $container)
         // afterward. If not, the globals from the extensions will never
         // be registered.
         $currentMethodCalls = $definition->getMethodCalls();
-        $twigBridgeExtensionsMethodCalls = array();
-        $othersExtensionsMethodCalls = array();
+        $twigBridgeExtensionsMethodCalls = [];
+        $othersExtensionsMethodCalls = [];
         foreach ($this->findAndSortTaggedServices('twig.extension', $container) as $extension) {
-            $methodCall = array('addExtension', array($extension));
+            $methodCall = ['addExtension', [$extension]];
             $extensionClass = $container->getDefinition((string) $extension)->getClass();
 
             if (\is_string($extensionClass) && 0 === strpos($extensionClass, 'Symfony\Bridge\Twig\Extension')) {
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
index a5e87cf61f3a..f2816ac8aaed 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
@@ -55,10 +55,10 @@ public function load(array $configs, ContainerBuilder $container)
             if (isset($config['globals'])) {
                 foreach ($config['globals'] as $name => $value) {
                     if (\is_array($value) && isset($value['key'])) {
-                        $configs[$key]['globals'][$name] = array(
+                        $configs[$key]['globals'][$name] = [
                             'key' => $name,
                             'value' => $value,
-                        );
+                        ];
                     }
                 }
             }
@@ -86,9 +86,9 @@ public function load(array $configs, ContainerBuilder $container)
         // register user-configured paths
         foreach ($config['paths'] as $path => $namespace) {
             if (!$namespace) {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path]);
             } else {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, $namespace]);
             }
         }
 
@@ -99,22 +99,22 @@ public function load(array $configs, ContainerBuilder $container)
         foreach ($this->getBundleTemplatePaths($container, $config) as $name => $paths) {
             $namespace = $this->normalizeBundleName($name);
             foreach ($paths as $path) {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, $namespace]);
             }
 
             if ($paths) {
                 // the last path must be the bundle views directory
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, '!'.$namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, '!'.$namespace]);
             }
         }
 
         if (file_exists($dir = $container->getParameter('kernel.root_dir').'/Resources/views')) {
-            $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($dir));
+            $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$dir]);
         }
         $container->addResource(new FileExistenceResource($dir));
 
         if (file_exists($dir = $container->getParameterBag()->resolveValue($config['default_path']))) {
-            $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($dir));
+            $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$dir]);
         }
         $container->addResource(new FileExistenceResource($dir));
 
@@ -122,9 +122,9 @@ public function load(array $configs, ContainerBuilder $container)
             $def = $container->getDefinition('twig');
             foreach ($config['globals'] as $key => $global) {
                 if (isset($global['type']) && 'service' === $global['type']) {
-                    $def->addMethodCall('addGlobal', array($key, new Reference($global['id'])));
+                    $def->addMethodCall('addGlobal', [$key, new Reference($global['id'])]);
                 } else {
-                    $def->addMethodCall('addGlobal', array($key, $global['value']));
+                    $def->addMethodCall('addGlobal', [$key, $global['value']]);
                 }
             }
         }
@@ -136,7 +136,7 @@ public function load(array $configs, ContainerBuilder $container)
         );
 
         if (isset($config['autoescape_service']) && isset($config['autoescape_service_method'])) {
-            $config['autoescape'] = array(new Reference($config['autoescape_service']), $config['autoescape_service_method']);
+            $config['autoescape'] = [new Reference($config['autoescape_service']), $config['autoescape_service_method']];
         }
         unset($config['autoescape_service'], $config['autoescape_service_method']);
 
@@ -156,7 +156,7 @@ public function load(array $configs, ContainerBuilder $container)
 
     private function getBundleTemplatePaths(ContainerBuilder $container, array $config)
     {
-        $bundleHierarchy = array();
+        $bundleHierarchy = [];
         foreach ($container->getParameter('kernel.bundles_metadata') as $name => $bundle) {
             if (file_exists($dir = $container->getParameter('kernel.root_dir').'/Resources/'.$name.'/views')) {
                 $bundleHierarchy[$name][] = $dir;
diff --git a/src/Symfony/Bundle/TwigBundle/TemplateIterator.php b/src/Symfony/Bundle/TwigBundle/TemplateIterator.php
index 1bbb4af6dcdc..17aca046f808 100644
--- a/src/Symfony/Bundle/TwigBundle/TemplateIterator.php
+++ b/src/Symfony/Bundle/TwigBundle/TemplateIterator.php
@@ -33,7 +33,7 @@ class TemplateIterator implements \IteratorAggregate
      * @param array           $paths       Additional Twig paths to warm
      * @param string          $defaultPath The directory where global templates can be stored
      */
-    public function __construct(KernelInterface $kernel, string $rootDir, array $paths = array(), string $defaultPath = null)
+    public function __construct(KernelInterface $kernel, string $rootDir, array $paths = [], string $defaultPath = null)
     {
         $this->kernel = $kernel;
         $this->rootDir = $rootDir;
@@ -52,7 +52,7 @@ public function getIterator()
 
         $this->templates = array_merge(
             $this->findTemplatesInDirectory($this->rootDir.'/Resources/views'),
-            $this->findTemplatesInDirectory($this->defaultPath, null, array('bundles'))
+            $this->findTemplatesInDirectory($this->defaultPath, null, ['bundles'])
         );
         foreach ($this->kernel->getBundles() as $bundle) {
             $name = $bundle->getName();
@@ -83,13 +83,13 @@ public function getIterator()
      *
      * @return array
      */
-    private function findTemplatesInDirectory($dir, $namespace = null, array $excludeDirs = array())
+    private function findTemplatesInDirectory($dir, $namespace = null, array $excludeDirs = [])
     {
         if (!is_dir($dir)) {
-            return array();
+            return [];
         }
 
-        $templates = array();
+        $templates = [];
         foreach (Finder::create()->files()->followLinks()->in($dir)->exclude($excludeDirs) as $file) {
             $templates[] = (null !== $namespace ? '@'.$namespace.'/' : '').str_replace('\\', '/', $file->getRelativePathname());
         }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigEnvironmentPassTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigEnvironmentPassTest.php
index aa6aac242807..1500fd095189 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigEnvironmentPassTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Compiler/TwigEnvironmentPassTest.php
@@ -29,11 +29,11 @@ public function testPassWithTwoExtensionsWithPriority()
         $pass = new TwigEnvironmentPass();
 
         $definition = new Definition('test_extension_1');
-        $definition->addTag('twig.extension', array('priority' => 100));
+        $definition->addTag('twig.extension', ['priority' => 100]);
         $builder->setDefinition('test_extension_1', $definition);
 
         $definition = new Definition('test_extension_2');
-        $definition->addTag('twig.extension', array('priority' => 200));
+        $definition->addTag('twig.extension', ['priority' => 200]);
         $builder->setDefinition('test_extension_2', $definition);
 
         $pass->process($builder);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/ConfigurationTest.php
index dfe045ce26f4..e479804b987e 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -19,15 +19,15 @@ class ConfigurationTest extends TestCase
 {
     public function testDoNoDuplicateDefaultFormResources()
     {
-        $input = array(
+        $input = [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-            'form_themes' => array('form_div_layout.html.twig'),
-        );
+            'form_themes' => ['form_div_layout.html.twig'],
+        ];
 
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(), array($input));
+        $config = $processor->processConfiguration(new Configuration(), [$input]);
 
-        $this->assertEquals(array('form_div_layout.html.twig'), $config['form_themes']);
+        $this->assertEquals(['form_div_layout.html.twig'], $config['form_themes']);
     }
 
     /**
@@ -37,34 +37,34 @@ public function testDoNoDuplicateDefaultFormResources()
     public function testGetStrictVariablesDefaultFalse()
     {
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(), array(array()));
+        $config = $processor->processConfiguration(new Configuration(), [[]]);
 
         $this->assertFalse($config['strict_variables']);
     }
 
     public function testGlobalsAreNotNormalized()
     {
-        $input = array(
+        $input = [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-            'globals' => array('some-global' => true),
-        );
+            'globals' => ['some-global' => true],
+        ];
 
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(), array($input));
+        $config = $processor->processConfiguration(new Configuration(), [$input]);
 
-        $this->assertSame(array('some-global' => array('value' => true)), $config['globals']);
+        $this->assertSame(['some-global' => ['value' => true]], $config['globals']);
     }
 
     public function testArrayKeysInGlobalsAreNotNormalized()
     {
-        $input = array(
+        $input = [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-            'globals' => array('global' => array('some-key' => 'some-value')),
-        );
+            'globals' => ['global' => ['some-key' => 'some-value']],
+        ];
 
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(), array($input));
+        $config = $processor->processConfiguration(new Configuration(), [$input]);
 
-        $this->assertSame(array('global' => array('value' => array('some-key' => 'some-value'))), $config['globals']);
+        $this->assertSame(['global' => ['value' => ['some-key' => 'some-value']]], $config['globals']);
     }
 }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/customTemplateEscapingGuesser.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/customTemplateEscapingGuesser.php
index 5ef1256663c9..de55467d2285 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/customTemplateEscapingGuesser.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/customTemplateEscapingGuesser.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('twig', array(
+$container->loadFromExtension('twig', [
     'autoescape_service' => 'my_project.some_bundle.template_escaping_guesser',
     'autoescape_service_method' => 'guess',
     'strict_variables' => false, // to be removed in 5.0 relying on default
-));
+]);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/empty.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/empty.php
index 674c5d474cc8..76e66160f50d 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/empty.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/empty.php
@@ -1,5 +1,5 @@
 <?php
 
-$container->loadFromExtension('twig', array(
+$container->loadFromExtension('twig', [
     'strict_variables' => false, // to be removed in 5.0 relying on default
-));
+]);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/extra.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/extra.php
index da234511b141..30c3428ef1b3 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/extra.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/extra.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('twig', array(
-    'paths' => array(
+$container->loadFromExtension('twig', [
+    'paths' => [
         'namespaced_path3' => 'namespace3',
-    ),
+    ],
     'strict_variables' => false, // to be removed in 5.0 relying on default
-));
+]);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/formats.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/formats.php
index fe4f7c19c110..69fbf7c012e8 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/formats.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/Fixtures/php/formats.php
@@ -1,15 +1,15 @@
 <?php
 
-$container->loadFromExtension('twig', array(
-    'date' => array(
+$container->loadFromExtension('twig', [
+    'date' => [
         'format' => 'Y-m-d',
         'interval_format' => '%d',
         'timezone' => 'Europe/Berlin',
-    ),
-    'number_format' => array(
+    ],
+    'number_format' => [
         'decimals' => 2,
         'decimal_point' => ',',
         'thousands_separator' => '.',
-    ),
+    ],
     'strict_variables' => false, // to be removed in 5.0 relying on default
-));
+]);
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
index 1039363a3bbd..a7b856d99a31 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
@@ -29,9 +29,9 @@ public function testLoadEmptyConfiguration()
     {
         $container = $this->createContainer();
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array(
+        $container->loadFromExtension('twig', [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-        ));
+        ]);
         $this->compileContainer($container);
 
         $this->assertEquals('Twig\Environment', $container->getDefinition('twig')->getClass(), '->load() loads the twig.xml file');
@@ -74,9 +74,9 @@ public function testLoadFullConfiguration($format)
         $this->assertEquals(3.14, $calls[4][1][1], '->load() registers variables as Twig globals');
 
         // Yaml and Php specific configs
-        if (\in_array($format, array('yml', 'php'))) {
+        if (\in_array($format, ['yml', 'php'])) {
             $this->assertEquals('bad', $calls[5][1][0], '->load() registers variables as Twig globals');
-            $this->assertEquals(array('key' => 'foo'), $calls[5][1][1], '->load() registers variables as Twig globals');
+            $this->assertEquals(['key' => 'foo'], $calls[5][1][1], '->load() registers variables as Twig globals');
         }
 
         // Twig options
@@ -101,7 +101,7 @@ public function testLoadCustomTemplateEscapingGuesserConfiguration($format)
         $this->compileContainer($container);
 
         $options = $container->getDefinition('twig')->getArgument(1);
-        $this->assertEquals(array(new Reference('my_project.some_bundle.template_escaping_guesser'), 'guess'), $options['autoescape']);
+        $this->assertEquals([new Reference('my_project.some_bundle.template_escaping_guesser'), 'guess'], $options['autoescape']);
     }
 
     /**
@@ -140,8 +140,8 @@ public function testLoadCustomDateFormats($fileFormat)
 
     public function testGlobalsWithDifferentTypesAndValues()
     {
-        $globals = array(
-            'array' => array(),
+        $globals = [
+            'array' => [],
             'false' => false,
             'float' => 2.0,
             'integer' => 3,
@@ -149,14 +149,14 @@ public function testGlobalsWithDifferentTypesAndValues()
             'object' => new \stdClass(),
             'string' => 'foo',
             'true' => true,
-        );
+        ];
 
         $container = $this->createContainer();
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array(
+        $container->loadFromExtension('twig', [
             'globals' => $globals,
             'strict_variables' => false, // // to be removed in 5.0 relying on default
-        ));
+        ]);
         $this->compileContainer($container);
 
         $calls = $container->getDefinition('twig')->getMethodCalls();
@@ -180,35 +180,35 @@ public function testTwigLoaderPaths($format)
         $this->compileContainer($container);
 
         $def = $container->getDefinition('twig.loader.native_filesystem');
-        $paths = array();
+        $paths = [];
         foreach ($def->getMethodCalls() as $call) {
             if ('addPath' === $call[0] && false === strpos($call[1][0], 'Form')) {
                 $paths[] = $call[1];
             }
         }
 
-        $this->assertEquals(array(
-            array('path1'),
-            array('path2'),
-            array('namespaced_path1', 'namespace1'),
-            array('namespaced_path2', 'namespace2'),
-            array('namespaced_path3', 'namespace3'),
-            array(__DIR__.'/Fixtures/Resources/TwigBundle/views', 'Twig'),
-            array(__DIR__.'/Fixtures/templates/bundles/TwigBundle', 'Twig'),
-            array(realpath(__DIR__.'/../..').'/Resources/views', 'Twig'),
-            array(realpath(__DIR__.'/../..').'/Resources/views', '!Twig'),
-            array(__DIR__.'/Fixtures/Resources/views'),
-            array(__DIR__.'/Fixtures/templates'),
-        ), $paths);
+        $this->assertEquals([
+            ['path1'],
+            ['path2'],
+            ['namespaced_path1', 'namespace1'],
+            ['namespaced_path2', 'namespace2'],
+            ['namespaced_path3', 'namespace3'],
+            [__DIR__.'/Fixtures/Resources/TwigBundle/views', 'Twig'],
+            [__DIR__.'/Fixtures/templates/bundles/TwigBundle', 'Twig'],
+            [realpath(__DIR__.'/../..').'/Resources/views', 'Twig'],
+            [realpath(__DIR__.'/../..').'/Resources/views', '!Twig'],
+            [__DIR__.'/Fixtures/Resources/views'],
+            [__DIR__.'/Fixtures/templates'],
+        ], $paths);
     }
 
     public function getFormats()
     {
-        return array(
-            array('php'),
-            array('yml'),
-            array('xml'),
-        );
+        return [
+            ['php'],
+            ['yml'],
+            ['xml'],
+        ];
     }
 
     /**
@@ -222,9 +222,9 @@ public function testStopwatchExtensionAvailability($debug, $stopwatchEnabled, $e
             $container->register('debug.stopwatch', 'Symfony\Component\Stopwatch\Stopwatch');
         }
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array(
+        $container->loadFromExtension('twig', [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-        ));
+        ]);
         $container->setAlias('test.twig.extension.debug.stopwatch', 'twig.extension.debug.stopwatch')->setPublic(true);
         $this->compileContainer($container);
 
@@ -237,21 +237,21 @@ public function testStopwatchExtensionAvailability($debug, $stopwatchEnabled, $e
 
     public function stopwatchExtensionAvailabilityProvider()
     {
-        return array(
-            'debug-and-stopwatch-enabled' => array(true, true, true),
-            'only-stopwatch-enabled' => array(false, true, false),
-            'only-debug-enabled' => array(true, false, false),
-            'debug-and-stopwatch-disabled' => array(false, false, false),
-        );
+        return [
+            'debug-and-stopwatch-enabled' => [true, true, true],
+            'only-stopwatch-enabled' => [false, true, false],
+            'only-debug-enabled' => [true, false, false],
+            'debug-and-stopwatch-disabled' => [false, false, false],
+        ];
     }
 
     public function testRuntimeLoader()
     {
         $container = $this->createContainer();
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array(
+        $container->loadFromExtension('twig', [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-        ));
+        ]);
         $container->setParameter('kernel.environment', 'test');
         $container->setParameter('debug.file_link_format', 'test');
         $container->setParameter('foo', 'FooClass');
@@ -260,7 +260,7 @@ public function testRuntimeLoader()
         $container->register('templating.name_parser', 'FooClass');
         $container->register('foo', '%foo%')->addTag('twig.runtime');
         $container->addCompilerPass(new RuntimeLoaderPass(), PassConfig::TYPE_BEFORE_REMOVING);
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         $loader = $container->getDefinition('twig.runtime_loader');
@@ -273,30 +273,30 @@ public function testRuntimeLoader()
 
     private function createContainer()
     {
-        $container = new ContainerBuilder(new ParameterBag(array(
+        $container = new ContainerBuilder(new ParameterBag([
             'kernel.cache_dir' => __DIR__,
             'kernel.root_dir' => __DIR__.'/Fixtures',
             'kernel.project_dir' => __DIR__,
             'kernel.charset' => 'UTF-8',
             'kernel.debug' => false,
-            'kernel.bundles' => array(
+            'kernel.bundles' => [
                 'TwigBundle' => 'Symfony\\Bundle\\TwigBundle\\TwigBundle',
-            ),
-            'kernel.bundles_metadata' => array(
-                'TwigBundle' => array(
+            ],
+            'kernel.bundles_metadata' => [
+                'TwigBundle' => [
                     'namespace' => 'Symfony\\Bundle\\TwigBundle',
                     'path' => realpath(__DIR__.'/../..'),
-                ),
-            ),
-        )));
+                ],
+            ],
+        ]));
 
         return $container;
     }
 
     private function compileContainer(ContainerBuilder $container)
     {
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
     }
 
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
index 46d5446abdd4..c5999752d04e 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
@@ -83,31 +83,31 @@ public function getName()
 
     public function registerBundles()
     {
-        return array(new FrameworkBundle(), new TwigBundle());
+        return [new FrameworkBundle(), new TwigBundle()];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
     {
         $loader->load(function ($container) {
             $container
-                ->loadFromExtension('framework', array(
+                ->loadFromExtension('framework', [
                     'secret' => '$ecret',
-                    'form' => array('enabled' => false),
-                ))
-                ->loadFromExtension('twig', array( // to be removed in 5.0 relying on default
+                    'form' => ['enabled' => false],
+                ])
+                ->loadFromExtension('twig', [ // to be removed in 5.0 relying on default
                     'strict_variables' => false,
-                ))
+                ])
             ;
         });
 
         if ($this->withTemplating) {
             $loader->load(function ($container) {
-                $container->loadFromExtension('framework', array(
+                $container->loadFromExtension('framework', [
                     'secret' => '$ecret',
-                    'templating' => array('engines' => array('twig')),
-                    'router' => array('resource' => '%kernel.project_dir%/Resources/config/empty_routing.yml'),
-                    'form' => array('enabled' => false),
-                ));
+                    'templating' => ['engines' => ['twig']],
+                    'router' => ['resource' => '%kernel.project_dir%/Resources/config/empty_routing.yml'],
+                    'form' => ['enabled' => false],
+                ]);
             });
         }
     }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/EmptyAppTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/EmptyAppTest.php
index 8dde94f2c65c..df90b237526e 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/EmptyAppTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/EmptyAppTest.php
@@ -39,9 +39,9 @@ public function registerContainerConfiguration(LoaderInterface $loader)
     {
         $loader->load(function ($container) {
             $container
-                ->loadFromExtension('twig', array( // to be removed in 5.0 relying on default
+                ->loadFromExtension('twig', [ // to be removed in 5.0 relying on default
                     'strict_variables' => false,
-                ))
+                ])
             ;
         });
     }
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
index ff3318780f7d..0c19f8d4a55a 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
@@ -55,20 +55,20 @@ class NoTemplatingEntryKernel extends Kernel
 {
     public function registerBundles()
     {
-        return array(new FrameworkBundle(), new TwigBundle());
+        return [new FrameworkBundle(), new TwigBundle()];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
     {
         $loader->load(function ($container) {
             $container
-                ->loadFromExtension('framework', array(
+                ->loadFromExtension('framework', [
                     'secret' => '$ecret',
-                    'form' => array('enabled' => false),
-                ))
-                ->loadFromExtension('twig', array( // to be removed in 5.0 relying on default
+                    'form' => ['enabled' => false],
+                ])
+                ->loadFromExtension('twig', [ // to be removed in 5.0 relying on default
                     'strict_variables' => false,
-                ))
+                ])
             ;
         });
     }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php b/src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php
index 64bcb3fdf60f..4dd4438ed906 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.php
@@ -67,7 +67,7 @@ public function onKernelResponse(FilterResponseEvent $event)
             try {
                 $response->headers->set(
                     'X-Debug-Token-Link',
-                    $this->urlGenerator->generate('_profiler', array('token' => $response->headers->get('X-Debug-Token')), UrlGeneratorInterface::ABSOLUTE_URL)
+                    $this->urlGenerator->generate('_profiler', ['token' => $response->headers->get('X-Debug-Token')], UrlGeneratorInterface::ABSOLUTE_URL)
                 );
             } catch (\Exception $e) {
                 $response->headers->set('X-Debug-Error', \get_class($e).': '.preg_replace('/\s+/', ' ', $e->getMessage()));
@@ -78,7 +78,7 @@ public function onKernelResponse(FilterResponseEvent $event)
             return;
         }
 
-        $nonces = $this->cspHandler ? $this->cspHandler->updateResponseHeaders($request, $response) : array();
+        $nonces = $this->cspHandler ? $this->cspHandler->updateResponseHeaders($request, $response) : [];
 
         // do not capture redirects or modify XML HTTP Requests
         if ($request->isXmlHttpRequest()) {
@@ -92,7 +92,7 @@ public function onKernelResponse(FilterResponseEvent $event)
                 $session->getFlashBag()->setAll($session->getFlashBag()->peekAll());
             }
 
-            $response->setContent($this->twig->render('@WebProfiler/Profiler/toolbar_redirect.html.twig', array('location' => $response->headers->get('Location'))));
+            $response->setContent($this->twig->render('@WebProfiler/Profiler/toolbar_redirect.html.twig', ['location' => $response->headers->get('Location')]));
             $response->setStatusCode(200);
             $response->headers->remove('Location');
         }
@@ -121,13 +121,13 @@ protected function injectToolbar(Response $response, Request $request, array $no
         if (false !== $pos) {
             $toolbar = "\n".str_replace("\n", '', $this->twig->render(
                 '@WebProfiler/Profiler/toolbar_js.html.twig',
-                array(
+                [
                     'excluded_ajax_paths' => $this->excludedAjaxPaths,
                     'token' => $response->headers->get('X-Debug-Token'),
                     'request' => $request,
                     'csp_script_nonce' => isset($nonces['csp_script_nonce']) ? $nonces['csp_script_nonce'] : null,
                     'csp_style_nonce' => isset($nonces['csp_style_nonce']) ? $nonces['csp_style_nonce'] : null,
-                )
+                ]
             ))."\n";
             $content = substr($content, 0, $pos).$toolbar.substr($content, $pos);
             $response->setContent($content);
@@ -136,8 +136,8 @@ protected function injectToolbar(Response $response, Request $request, array $no
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::RESPONSE => array('onKernelResponse', -128),
-        );
+        return [
+            KernelEvents::RESPONSE => ['onKernelResponse', -128],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
index f2dd79123075..880d611fa689 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
@@ -32,7 +32,7 @@ public function testEmptyToken($token)
             ->disableOriginalConstructor()
             ->getMock();
 
-        $controller = new ProfilerController($urlGenerator, $profiler, $twig, array());
+        $controller = new ProfilerController($urlGenerator, $profiler, $twig, []);
 
         $response = $controller->toolbarAction(Request::create('/_wdt/empty'), $token);
         $this->assertEquals(200, $response->getStatusCode());
@@ -40,11 +40,11 @@ public function testEmptyToken($token)
 
     public function getEmptyTokenCases()
     {
-        return array(
-            array(null),
+        return [
+            [null],
             // "empty" is also a valid empty token case, see https://github.com/symfony/symfony/issues/10806
-            array('empty'),
-        );
+            ['empty'],
+        ];
     }
 
     /**
@@ -59,10 +59,10 @@ public function testOpeningDisallowedPaths($path, $isAllowed)
             ->disableOriginalConstructor()
             ->getMock();
 
-        $controller = new ProfilerController($urlGenerator, $profiler, $twig, array(), null, __DIR__.'/../..');
+        $controller = new ProfilerController($urlGenerator, $profiler, $twig, [], null, __DIR__.'/../..');
 
         try {
-            $response = $controller->openAction(Request::create('/_wdt/open', Request::METHOD_GET, array('file' => $path)));
+            $response = $controller->openAction(Request::create('/_wdt/open', Request::METHOD_GET, ['file' => $path]));
             $this->assertEquals(200, $response->getStatusCode());
             $this->assertTrue($isAllowed);
         } catch (NotFoundHttpException $e) {
@@ -72,15 +72,15 @@ public function testOpeningDisallowedPaths($path, $isAllowed)
 
     public function getOpenFileCases()
     {
-        return array(
-            array('README.md', true),
-            array('composer.json', true),
-            array('Controller/ProfilerController.php', true),
-            array('.gitignore', false),
-            array('../TwigBundle/README.md', false),
-            array('Controller/../README.md', false),
-            array('Controller/./ProfilerController.php', false),
-        );
+        return [
+            ['README.md', true],
+            ['composer.json', true],
+            ['Controller/ProfilerController.php', true],
+            ['.gitignore', false],
+            ['../TwigBundle/README.md', false],
+            ['Controller/../README.md', false],
+            ['Controller/./ProfilerController.php', false],
+        ];
     }
 
     /**
@@ -126,8 +126,8 @@ public function testSearchResult($withCsp)
 
         $controller = $this->createController($profiler, $twig, $withCsp);
 
-        $tokens = array(
-            array(
+        $tokens = [
+            [
                 'token' => 'token1',
                 'ip' => '127.0.0.1',
                 'method' => 'GET',
@@ -135,8 +135,8 @@ public function testSearchResult($withCsp)
                 'time' => 0,
                 'parent' => null,
                 'status_code' => 200,
-            ),
-            array(
+            ],
+            [
                 'token' => 'token2',
                 'ip' => '127.0.0.1',
                 'method' => 'GET',
@@ -144,23 +144,23 @@ public function testSearchResult($withCsp)
                 'time' => 0,
                 'parent' => null,
                 'status_code' => 404,
-            ),
-        );
+            ],
+        ];
         $profiler
             ->expects($this->once())
             ->method('find')
             ->will($this->returnValue($tokens));
 
-        $request = Request::create('/_profiler/empty/search/results', 'GET', array(
+        $request = Request::create('/_profiler/empty/search/results', 'GET', [
             'limit' => 2,
             'ip' => '127.0.0.1',
             'method' => 'GET',
             'url' => 'http://example.com/',
-        ));
+        ]);
 
         $twig->expects($this->once())
             ->method('render')
-            ->with($this->stringEndsWith('results.html.twig'), $this->equalTo(array(
+            ->with($this->stringEndsWith('results.html.twig'), $this->equalTo([
                 'token' => 'empty',
                 'profile' => null,
                 'tokens' => $tokens,
@@ -173,7 +173,7 @@ public function testSearchResult($withCsp)
                 'limit' => 2,
                 'panel' => null,
                 'request' => $request,
-            )));
+            ]));
 
         $response = $controller->searchResultsAction($request, 'empty');
         $this->assertEquals(200, $response->getStatusCode());
@@ -181,10 +181,10 @@ public function testSearchResult($withCsp)
 
     public function provideCspVariants()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     private function createController($profiler, $twig, $withCSP)
@@ -194,9 +194,9 @@ private function createController($profiler, $twig, $withCSP)
         if ($withCSP) {
             $nonceGenerator = $this->getMockBuilder('Symfony\Bundle\WebProfilerBundle\Csp\NonceGenerator')->getMock();
 
-            return new ProfilerController($urlGenerator, $profiler, $twig, array(), new ContentSecurityPolicyHandler($nonceGenerator));
+            return new ProfilerController($urlGenerator, $profiler, $twig, [], new ContentSecurityPolicyHandler($nonceGenerator));
         }
 
-        return new ProfilerController($urlGenerator, $profiler, $twig, array());
+        return new ProfilerController($urlGenerator, $profiler, $twig, []);
     }
 }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/ConfigurationTest.php
index 12672d7e0256..79e09054bbca 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -24,19 +24,19 @@ public function testConfigTree($options, $results)
     {
         $processor = new Processor();
         $configuration = new Configuration();
-        $config = $processor->processConfiguration($configuration, array($options));
+        $config = $processor->processConfiguration($configuration, [$options]);
 
         $this->assertEquals($results, $config);
     }
 
     public function getDebugModes()
     {
-        return array(
-            array(array(), array('intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt')),
-            array(array('intercept_redirects' => true), array('intercept_redirects' => true, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt')),
-            array(array('intercept_redirects' => false), array('intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt')),
-            array(array('toolbar' => true), array('intercept_redirects' => false, 'toolbar' => true, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt')),
-            array(array('excluded_ajax_paths' => 'test'), array('intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => 'test')),
-        );
+        return [
+            [[], ['intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt']],
+            [['intercept_redirects' => true], ['intercept_redirects' => true, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt']],
+            [['intercept_redirects' => false], ['intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt']],
+            [['toolbar' => true], ['intercept_redirects' => false, 'toolbar' => true, 'excluded_ajax_paths' => '^/((index|app(_[\w]+)?)\.php/)?_wdt']],
+            [['excluded_ajax_paths' => 'test'], ['intercept_redirects' => false, 'toolbar' => false, 'excluded_ajax_paths' => 'test']],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
index 6043be51aaa0..fbdb975745c6 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
@@ -43,11 +43,11 @@ protected function setUp()
 
         $profiler = $this->mockProfiler();
         $twigEnvironment = $this->mockTwigEnvironment();
-        $templates = array(
-            'data_collector.foo' => array('foo', 'FooBundle:Collector:foo'),
-            'data_collector.bar' => array('bar', 'FooBundle:Collector:bar'),
-            'data_collector.baz' => array('baz', 'FooBundle:Collector:baz'),
-        );
+        $templates = [
+            'data_collector.foo' => ['foo', 'FooBundle:Collector:foo'],
+            'data_collector.bar' => ['bar', 'FooBundle:Collector:bar'],
+            'data_collector.baz' => ['baz', 'FooBundle:Collector:baz'],
+        ];
 
         $this->templateManager = new TemplateManager($profiler, $twigEnvironment, $templates);
     }
@@ -69,12 +69,12 @@ public function testGetNameValidTemplate()
         $this->profiler->expects($this->any())
             ->method('has')
             ->withAnyParameters()
-            ->will($this->returnCallback(array($this, 'profilerHasCallback')));
+            ->will($this->returnCallback([$this, 'profilerHasCallback']));
 
         $profile = $this->mockProfile();
         $profile->expects($this->any())
             ->method('hasCollector')
-            ->will($this->returnCallback(array($this, 'profileHasCollectorCallback')));
+            ->will($this->returnCallback([$this, 'profileHasCollectorCallback']));
 
         $this->assertEquals('FooBundle:Collector:foo.html.twig', $this->templateManager->getName($profile, 'foo'));
     }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php b/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
index c714ff064247..44947836335e 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
@@ -63,18 +63,18 @@ public function leave(Profile $profile)
      */
     public function getFunctions()
     {
-        return array(
-            new TwigFunction('profiler_dump', array($this, 'dumpData'), array('is_safe' => array('html'), 'needs_environment' => true)),
-            new TwigFunction('profiler_dump_log', array($this, 'dumpLog'), array('is_safe' => array('html'), 'needs_environment' => true)),
-        );
+        return [
+            new TwigFunction('profiler_dump', [$this, 'dumpData'], ['is_safe' => ['html'], 'needs_environment' => true]),
+            new TwigFunction('profiler_dump_log', [$this, 'dumpLog'], ['is_safe' => ['html'], 'needs_environment' => true]),
+        ];
     }
 
     public function dumpData(Environment $env, Data $data, $maxDepth = 0)
     {
         $this->dumper->setCharset($env->getCharset());
-        $this->dumper->dump($data, null, array(
+        $this->dumper->dump($data, null, [
             'maxDepth' => $maxDepth,
-        ));
+        ]);
 
         $dump = stream_get_contents($this->output, -1, 0);
         rewind($this->output);
@@ -92,7 +92,7 @@ public function dumpLog(Environment $env, $message, Data $context = null)
             return '<span class="dump-inline">'.$message.'</span>';
         }
 
-        $replacements = array();
+        $replacements = [];
         foreach ($context as $k => $v) {
             $k = '{'.twig_escape_filter($env, $k).'}';
             $replacements['&quot;<b>'.$k.'</b>&quot;'] = $replacements['&quot;'.$k.'&quot;'] = $replacements[$k] = $this->dumpData($env, $v);
diff --git a/src/Symfony/Component/BrowserKit/Client.php b/src/Symfony/Component/BrowserKit/Client.php
index fd17e2164c64..f93237bf639e 100644
--- a/src/Symfony/Component/BrowserKit/Client.php
+++ b/src/Symfony/Component/BrowserKit/Client.php
@@ -31,7 +31,7 @@ abstract class Client
 {
     protected $history;
     protected $cookieJar;
-    protected $server = array();
+    protected $server = [];
     protected $internalRequest;
     protected $request;
     protected $internalResponse;
@@ -43,7 +43,7 @@ abstract class Client
 
     private $maxRedirects = -1;
     private $redirectCount = 0;
-    private $redirects = array();
+    private $redirects = [];
     private $isMainRequest = true;
 
     /**
@@ -51,7 +51,7 @@ abstract class Client
      * @param History   $history   A History instance to store the browser history
      * @param CookieJar $cookieJar A CookieJar instance to store the cookies
      */
-    public function __construct(array $server = array(), History $history = null, CookieJar $cookieJar = null)
+    public function __construct(array $server = [], History $history = null, CookieJar $cookieJar = null)
     {
         $this->setServerParameters($server);
         $this->history = $history ?: new History();
@@ -122,9 +122,9 @@ public function insulate($insulated = true)
      */
     public function setServerParameters(array $server)
     {
-        $this->server = array_merge(array(
+        $this->server = array_merge([
             'HTTP_USER_AGENT' => 'Symfony BrowserKit',
-        ), $server);
+        ], $server);
     }
 
     /**
@@ -151,7 +151,7 @@ public function getServerParameter($key, $default = '')
         return isset($this->server[$key]) ? $this->server[$key] : $default;
     }
 
-    public function xmlHttpRequest(string $method, string $uri, array $parameters = array(), array $files = array(), array $server = array(), string $content = null, bool $changeHistory = true): Crawler
+    public function xmlHttpRequest(string $method, string $uri, array $parameters = [], array $files = [], array $server = [], string $content = null, bool $changeHistory = true): Crawler
     {
         $this->setServerParameter('HTTP_X_REQUESTED_WITH', 'XMLHttpRequest');
 
@@ -290,10 +290,10 @@ public function click(Link $link)
      *
      * @return Crawler
      */
-    public function submit(Form $form, array $values = array()/*, array $serverParameters = array()*/)
+    public function submit(Form $form, array $values = []/*, array $serverParameters = array()*/)
     {
         $form->setValues($values);
-        $serverParameters = 2 < \func_num_args() ? func_get_arg(2) : array();
+        $serverParameters = 2 < \func_num_args() ? func_get_arg(2) : [];
 
         return $this->request($form->getMethod(), $form->getUri(), $form->getPhpValues(), $form->getPhpFiles(), $serverParameters);
     }
@@ -311,7 +311,7 @@ public function submit(Form $form, array $values = array()/*, array $serverParam
      *
      * @return Crawler
      */
-    public function request(string $method, string $uri, array $parameters = array(), array $files = array(), array $server = array(), string $content = null, bool $changeHistory = true)
+    public function request(string $method, string $uri, array $parameters = [], array $files = [], array $server = [], string $content = null, bool $changeHistory = true)
     {
         if ($this->isMainRequest) {
             $this->redirectCount = 0;
@@ -398,7 +398,7 @@ protected function doRequestInProcess($request)
         if (file_exists($deprecationsFile)) {
             $deprecations = file_get_contents($deprecationsFile);
             unlink($deprecationsFile);
-            foreach ($deprecations ? unserialize($deprecations) : array() as $deprecation) {
+            foreach ($deprecations ? unserialize($deprecations) : [] as $deprecation) {
                 if ($deprecation[0]) {
                     @trigger_error($deprecation[1], E_USER_DEPRECATED);
                 } else {
@@ -542,9 +542,9 @@ public function followRedirect()
 
         $request = $this->internalRequest;
 
-        if (\in_array($this->internalResponse->getStatus(), array(301, 302, 303))) {
+        if (\in_array($this->internalResponse->getStatus(), [301, 302, 303])) {
             $method = 'GET';
-            $files = array();
+            $files = [];
             $content = null;
         } else {
             $method = $request->getMethod();
@@ -554,7 +554,7 @@ public function followRedirect()
 
         if ('GET' === strtoupper($method)) {
             // Don't forward parameters for GET request as it should reach the redirection URI
-            $parameters = array();
+            $parameters = [];
         } else {
             $parameters = $request->getParameters();
         }
diff --git a/src/Symfony/Component/BrowserKit/Request.php b/src/Symfony/Component/BrowserKit/Request.php
index d06868660b2d..c1e7ba4ce8be 100644
--- a/src/Symfony/Component/BrowserKit/Request.php
+++ b/src/Symfony/Component/BrowserKit/Request.php
@@ -33,7 +33,7 @@ class Request
      * @param array  $server     An array of server parameters
      * @param string $content    The raw body data
      */
-    public function __construct(string $uri, string $method, array $parameters = array(), array $files = array(), array $cookies = array(), array $server = array(), string $content = null)
+    public function __construct(string $uri, string $method, array $parameters = [], array $files = [], array $cookies = [], array $server = [], string $content = null)
     {
         $this->uri = $uri;
         $this->method = $method;
diff --git a/src/Symfony/Component/BrowserKit/Response.php b/src/Symfony/Component/BrowserKit/Response.php
index 6c50aeee4336..7558d9610953 100644
--- a/src/Symfony/Component/BrowserKit/Response.php
+++ b/src/Symfony/Component/BrowserKit/Response.php
@@ -28,7 +28,7 @@ class Response
      * @param int    $status  The response status code
      * @param array  $headers An array of headers
      */
-    public function __construct(string $content = '', int $status = 200, array $headers = array())
+    public function __construct(string $content = '', int $status = 200, array $headers = [])
     {
         $this->content = $content;
         $this->status = $status;
@@ -116,10 +116,10 @@ public function getHeader($header, $first = true)
                     return \is_array($value) ? (\count($value) ? $value[0] : '') : $value;
                 }
 
-                return \is_array($value) ? $value : array($value);
+                return \is_array($value) ? $value : [$value];
             }
         }
 
-        return $first ? null : array();
+        return $first ? null : [];
     }
 }
diff --git a/src/Symfony/Component/BrowserKit/Tests/ClientTest.php b/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
index b9b88540af75..e99f3a13758b 100644
--- a/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
@@ -107,7 +107,7 @@ public function testGetRequestNull()
     public function testXmlHttpRequest()
     {
         $client = new TestClient();
-        $client->xmlHttpRequest('GET', 'http://example.com/', array(), array(), array(), null, true);
+        $client->xmlHttpRequest('GET', 'http://example.com/', [], [], [], null, true);
         $this->assertEquals($client->getRequest()->getServer()['HTTP_X_REQUESTED_WITH'], 'XMLHttpRequest');
         $this->assertFalse($client->getServerParameter('HTTP_X_REQUESTED_WITH', false));
     }
@@ -372,9 +372,9 @@ public function testSubmitPassthrewHeaders()
         $client = new TestClient();
         $client->setNextResponse(new Response('<html><form action="/foo"><input type="submit" /></form></html>'));
         $crawler = $client->request('GET', 'http://www.example.com/foo/foobar');
-        $headers = array('Accept-Language' => 'de');
+        $headers = ['Accept-Language' => 'de'];
 
-        $client->submit($crawler->filter('input')->form(), array(), $headers);
+        $client->submit($crawler->filter('input')->form(), [], $headers);
 
         $server = $client->getRequest()->getServer();
         $this->assertArrayHasKey('Accept-Language', $server);
diff --git a/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php b/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
index f3ab76f20ec8..95d7bbe577cb 100644
--- a/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
@@ -52,7 +52,7 @@ function ($key, $value, $isHit) use ($defaultLifetime) {
             null,
             CacheItem::class
         );
-        $getId = \Closure::fromCallable(array($this, 'getId'));
+        $getId = \Closure::fromCallable([$this, 'getId']);
         $this->mergeByLifetime = \Closure::bind(
             function ($deferred, $namespace, &$expiredIds) use ($getId) {
                 $byLifetime = [];
diff --git a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
index 32f7be89877d..c92904beda9c 100644
--- a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
@@ -43,7 +43,7 @@ class PdoAdapter extends AbstractAdapter implements PruneableInterface
      * @throws InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
      * @throws InvalidArgumentException When namespace contains invalid characters
      */
-    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = array())
+    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = [])
     {
         $this->init($connOrDsn, $namespace, $defaultLifetime, $options);
     }
diff --git a/src/Symfony/Component/Cache/Simple/PdoCache.php b/src/Symfony/Component/Cache/Simple/PdoCache.php
index 65b9879cd37c..02df761fc418 100644
--- a/src/Symfony/Component/Cache/Simple/PdoCache.php
+++ b/src/Symfony/Component/Cache/Simple/PdoCache.php
@@ -41,7 +41,7 @@ class PdoCache extends AbstractCache implements PruneableInterface
      * @throws InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
      * @throws InvalidArgumentException When namespace contains invalid characters
      */
-    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = array())
+    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = [])
     {
         $this->init($connOrDsn, $namespace, $defaultLifetime, $options);
     }
diff --git a/src/Symfony/Component/Cache/Tests/CacheItemTest.php b/src/Symfony/Component/Cache/Tests/CacheItemTest.php
index bf46d7394b2c..9d1325598d54 100644
--- a/src/Symfony/Component/Cache/Tests/CacheItemTest.php
+++ b/src/Symfony/Component/Cache/Tests/CacheItemTest.php
@@ -33,23 +33,23 @@ public function testInvalidKey($key)
 
     public function provideInvalidKey()
     {
-        return array(
-            array(''),
-            array('{'),
-            array('}'),
-            array('('),
-            array(')'),
-            array('/'),
-            array('\\'),
-            array('@'),
-            array(':'),
-            array(true),
-            array(null),
-            array(1),
-            array(1.1),
-            array(array(array())),
-            array(new \Exception('foo')),
-        );
+        return [
+            [''],
+            ['{'],
+            ['}'],
+            ['('],
+            [')'],
+            ['/'],
+            ['\\'],
+            ['@'],
+            [':'],
+            [true],
+            [null],
+            [1],
+            [1.1],
+            [[[]]],
+            [new \Exception('foo')],
+        ];
     }
 
     public function testTag()
@@ -57,10 +57,10 @@ public function testTag()
         $item = new CacheItem();
 
         $this->assertSame($item, $item->tag('foo'));
-        $this->assertSame($item, $item->tag(array('bar', 'baz')));
+        $this->assertSame($item, $item->tag(['bar', 'baz']));
 
         (\Closure::bind(function () use ($item) {
-            $this->assertSame(array('foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'), $item->tags);
+            $this->assertSame(['foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'], $item->tags);
         }, $this, CacheItem::class))();
     }
 
diff --git a/src/Symfony/Component/Cache/Tests/Simple/CacheTestCase.php b/src/Symfony/Component/Cache/Tests/Simple/CacheTestCase.php
index 5b84d8b09390..1a13cbaae826 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/CacheTestCase.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/CacheTestCase.php
@@ -28,7 +28,7 @@ protected function setUp()
 
     public static function validKeys()
     {
-        return array_merge(parent::validKeys(), array(array("a\0b")));
+        return array_merge(parent::validKeys(), [["a\0b"]]);
     }
 
     public function testDefaultLifeTime()
@@ -64,9 +64,9 @@ public function testNotUnserializable()
 
         $this->assertNull($cache->get('foo'));
 
-        $cache->setMultiple(array('foo' => new NotUnserializable()));
+        $cache->setMultiple(['foo' => new NotUnserializable()]);
 
-        foreach ($cache->getMultiple(array('foo')) as $value) {
+        foreach ($cache->getMultiple(['foo']) as $value) {
         }
         $this->assertNull($value);
 
diff --git a/src/Symfony/Component/Config/Definition/BaseNode.php b/src/Symfony/Component/Config/Definition/BaseNode.php
index 16dfccb54c1d..39511c15c6b8 100644
--- a/src/Symfony/Component/Config/Definition/BaseNode.php
+++ b/src/Symfony/Component/Config/Definition/BaseNode.php
@@ -27,17 +27,17 @@ abstract class BaseNode implements NodeInterface
     const DEFAULT_PATH_SEPARATOR = '.';
 
     private static $placeholderUniquePrefix;
-    private static $placeholders = array();
+    private static $placeholders = [];
 
     protected $name;
     protected $parent;
-    protected $normalizationClosures = array();
-    protected $finalValidationClosures = array();
+    protected $normalizationClosures = [];
+    protected $finalValidationClosures = [];
     protected $allowOverwrite = true;
     protected $required = false;
     protected $deprecationMessage = null;
-    protected $equivalentValues = array();
-    protected $attributes = array();
+    protected $equivalentValues = [];
+    protected $attributes = [];
     protected $pathSeparator;
 
     private $handlingPlaceholder;
@@ -94,7 +94,7 @@ public static function setPlaceholderUniquePrefix(string $prefix): void
     public static function resetPlaceholders(): void
     {
         self::$placeholderUniquePrefix = null;
-        self::$placeholders = array();
+        self::$placeholders = [];
     }
 
     public function setAttribute($key, $value)
@@ -175,7 +175,7 @@ public function getExample()
      */
     public function addEquivalentValue($originalValue, $equivalentValue)
     {
-        $this->equivalentValues[] = array($originalValue, $equivalentValue);
+        $this->equivalentValues[] = [$originalValue, $equivalentValue];
     }
 
     /**
@@ -259,7 +259,7 @@ public function isDeprecated()
      */
     public function getDeprecationMessage($node, $path)
     {
-        return strtr($this->deprecationMessage, array('%node%' => $node, '%path%' => $path));
+        return strtr($this->deprecationMessage, ['%node%' => $node, '%path%' => $path]);
     }
 
     /**
@@ -484,7 +484,7 @@ protected function isHandlingPlaceholder(): bool
      */
     protected function getValidPlaceholderTypes(): array
     {
-        return array();
+        return [];
     }
 
     private static function resolvePlaceholderValue($value)
@@ -495,7 +495,7 @@ private static function resolvePlaceholderValue($value)
             }
 
             if (self::$placeholderUniquePrefix && 0 === strpos($value, self::$placeholderUniquePrefix)) {
-                return array();
+                return [];
             }
         }
 
diff --git a/src/Symfony/Component/Config/Definition/BooleanNode.php b/src/Symfony/Component/Config/Definition/BooleanNode.php
index 40f693915ac9..c43c46f0168d 100644
--- a/src/Symfony/Component/Config/Definition/BooleanNode.php
+++ b/src/Symfony/Component/Config/Definition/BooleanNode.php
@@ -50,6 +50,6 @@ protected function isValueEmpty($value)
      */
     protected function getValidPlaceholderTypes(): array
     {
-        return array('bool');
+        return ['bool'];
     }
 }
diff --git a/src/Symfony/Component/Config/Definition/EnumNode.php b/src/Symfony/Component/Config/Definition/EnumNode.php
index c54117a34ae5..23fc508a78fa 100644
--- a/src/Symfony/Component/Config/Definition/EnumNode.php
+++ b/src/Symfony/Component/Config/Definition/EnumNode.php
@@ -22,7 +22,7 @@ class EnumNode extends ScalarNode
 {
     private $values;
 
-    public function __construct(?string $name, NodeInterface $parent = null, array $values = array(), string $pathSeparator = BaseNode::DEFAULT_PATH_SEPARATOR)
+    public function __construct(?string $name, NodeInterface $parent = null, array $values = [], string $pathSeparator = BaseNode::DEFAULT_PATH_SEPARATOR)
     {
         $values = array_unique($values);
         if (empty($values)) {
diff --git a/src/Symfony/Component/Config/Definition/FloatNode.php b/src/Symfony/Component/Config/Definition/FloatNode.php
index 173b76df38fa..8e229ed4c59d 100644
--- a/src/Symfony/Component/Config/Definition/FloatNode.php
+++ b/src/Symfony/Component/Config/Definition/FloatNode.php
@@ -46,6 +46,6 @@ protected function validateType($value)
      */
     protected function getValidPlaceholderTypes(): array
     {
-        return array('float');
+        return ['float'];
     }
 }
diff --git a/src/Symfony/Component/Config/Definition/IntegerNode.php b/src/Symfony/Component/Config/Definition/IntegerNode.php
index 4523584986c5..e8c6a81c303e 100644
--- a/src/Symfony/Component/Config/Definition/IntegerNode.php
+++ b/src/Symfony/Component/Config/Definition/IntegerNode.php
@@ -41,6 +41,6 @@ protected function validateType($value)
      */
     protected function getValidPlaceholderTypes(): array
     {
-        return array('int');
+        return ['int'];
     }
 }
diff --git a/src/Symfony/Component/Config/Definition/ScalarNode.php b/src/Symfony/Component/Config/Definition/ScalarNode.php
index ee870b6a85ea..da3dd90c9462 100644
--- a/src/Symfony/Component/Config/Definition/ScalarNode.php
+++ b/src/Symfony/Component/Config/Definition/ScalarNode.php
10000

@@ -60,6 +60,6 @@ protected function isValueEmpty($value)
      */
     protected function getValidPlaceholderTypes(): array
     {
-        return array('bool', 'int', 'float', 'string');
+        return ['bool', 'int', 'float', 'string'];
     }
 }
diff --git a/src/Symfony/Component/Config/Exception/FileLocatorFileNotFoundException.php b/src/Symfony/Component/Config/Exception/FileLocatorFileNotFoundException.php
index 09b71606732d..d8dad76a0a2c 100644
--- a/src/Symfony/Component/Config/Exception/FileLocatorFileNotFoundException.php
+++ b/src/Symfony/Component/Config/Exception/FileLocatorFileNotFoundException.php
@@ -20,7 +20,7 @@ class FileLocatorFileNotFoundException extends \InvalidArgumentException
 {
     private $paths;
 
-    public function __construct(string $message = '', int $code = 0, \Exception $previous = null, array $paths = array())
+    public function __construct(string $message = '', int $code = 0, \Exception $previous = null, array $paths = [])
     {
         parent::__construct($message, $code, $previous);
 
diff --git a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
index 489e61d6c0a8..0fd503263beb 100644
--- a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
+++ b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
@@ -19,13 +19,13 @@
  */
 class ReflectionClassResource implements SelfCheckingResourceInterface, \Serializable
 {
-    private $files = array();
+    private $files = [];
     private $className;
     private $classReflector;
-    private $excludedVendors = array();
+    private $excludedVendors = [];
     private $hash;
 
-    public function __construct(\ReflectionClass $classReflector, array $excludedVendors = array())
+    public function __construct(\ReflectionClass $classReflector, array $excludedVendors = [])
     {
         $this->className = $classReflector->name;
         $this->classReflector = $classReflector;
@@ -64,7 +64,7 @@ public function serialize()
             $this->loadFiles($this->classReflector);
         }
 
-        return serialize(array($this->files, $this->className, $this->hash));
+        return serialize([$this->files, $this->className, $this->hash]);
     }
 
     public function unserialize($serialized)
@@ -141,7 +141,7 @@ private function generateSignature(\ReflectionClass $class)
         foreach ($class->getMethods(\ReflectionMethod::IS_PUBLIC | \ReflectionMethod::IS_PROTECTED) as $m) {
             yield preg_replace('/^  @@.*/m', '', $m);
 
-            $defaults = array();
+            $defaults = [];
             foreach ($m->getParameters() as $p) {
                 $defaults[$p->name] = $p->isDefaultValueAvailable() ? $p->getDefaultValue() : null;
             }
diff --git a/src/Symfony/Component/Config/ResourceCheckerConfigCache.php b/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
index e7f2edfe9689..533ec79c5b1f 100644
--- a/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
+++ b/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
@@ -37,7 +37,7 @@ class ResourceCheckerConfigCache implements ConfigCacheInterface
      * @param string                              $file             The absolute cache path
      * @param iterable|ResourceCheckerInterface[] $resourceCheckers The ResourceCheckers to use for the freshness check
      */
-    public function __construct(string $file, iterable $resourceCheckers = array())
+    public function __construct(string $file, iterable $resourceCheckers = [])
     {
         $this->file = $file;
         $this->resourceCheckers = $resourceCheckers;
@@ -158,7 +158,7 @@ private function safelyUnserialize($file)
         $meta = false;
         $signalingException = new \UnexpectedValueException();
         $prevUnserializeHandler = ini_set('unserialize_callback_func', '');
-        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) use (&$prevErrorHandler, $signalingException) {
+        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$prevErrorHandler, $signalingException) {
             if (E_WARNING === $type && 'Class __PHP_Incomplete_Class has no unserializer' === $msg) {
                 throw $signalingException;
             }
diff --git a/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php b/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php
index 8d94a2921d10..0338635ff5a6 100644
--- a/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php
+++ b/src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php
@@ -19,12 +19,12 @@
  */
 class ResourceCheckerConfigCacheFactory implements ConfigCacheFactoryInterface
 {
-    private $resourceCheckers = array();
+    private $resourceCheckers = [];
 
     /**
      * @param iterable|ResourceCheckerInterface[] $resourceCheckers
      */
-    public function __construct(iterable $resourceCheckers = array())
+    public function __construct(iterable $resourceCheckers = [])
     {
         $this->resourceCheckers = $resourceCheckers;
     }
diff --git a/src/Symfony/Component/Config/Tests/Definition/BaseNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/BaseNodeTest.php
index a606bf407d69..68fa1c7d3131 100644
--- a/src/Symfony/Component/Config/Tests/Definition/BaseNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/BaseNodeTest.php
@@ -22,7 +22,7 @@ class BaseNodeTest extends TestCase
      */
     public function testGetPathForChildNode($expected, array $params)
     {
-        $constructorArgs = array();
+        $constructorArgs = [];
         $constructorArgs[] = $params[0];
 
         if (isset($params[1])) {
@@ -46,11 +46,11 @@ public function testGetPathForChildNode($expected, array $params)
 
     public function providePath()
     {
-        return array(
-            'name only' => array('root', array('root')),
-            'name and parent' => array('foo.bar.baz.bim', array('bim', 'foo.bar.baz')),
-            'name and separator' => array('foo', array('foo', null, '/')),
-            'name, parent and separator' => array('foo.bar/baz/bim', array('bim', 'foo.bar/baz', '/')),
-        );
+        return [
+            'name only' => ['root', ['root']],
+            'name and parent' => ['foo.bar.baz.bim', ['bim', 'foo.bar.baz']],
+            'name and separator' => ['foo', ['foo', null, '/']],
+            'name, parent and separator' => ['foo.bar/baz/bim', ['bim', 'foo.bar/baz', '/']],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
index 6a31b865e94b..b319cc578128 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
@@ -43,20 +43,20 @@ public function testPrototypeNodeSpecificOption($method, $args)
     {
         $node = new ArrayNodeDefinition('root');
 
-        \call_user_func_array(array($node, $method), $args);
+        \call_user_func_array([$node, $method], $args);
 
         $node->getNode();
     }
 
     public function providePrototypeNodeSpecificCalls()
     {
-        return array(
-            array('defaultValue', array(array())),
-            array('addDefaultChildrenIfNoneSet', array()),
-            array('requiresAtLeastOneElement', array()),
-            array('cannotBeEmpty', array()),
-            array('useAttributeAsKey', array('foo')),
-        );
+        return [
+            ['defaultValue', [[]]],
+            ['addDefaultChildrenIfNoneSet', []],
+            ['requiresAtLeastOneElement', []],
+            ['cannotBeEmpty', []],
+            ['useAttributeAsKey', ['foo']],
+        ];
     }
 
     /**
@@ -79,7 +79,7 @@ public function testPrototypeNodesCantHaveADefaultValueWhenUsingDefaultChildren(
     {
         $node = new ArrayNodeDefinition('root');
         $node
-            ->defaultValue(array())
+            ->defaultValue([])
             ->addDefaultChildrenIfNoneSet('foo')
             ->prototype('array')
         ;
@@ -94,7 +94,7 @@ public function testPrototypedArrayNodeDefaultWhenUsingDefaultChildren()
             ->prototype('array')
         ;
         $tree = $node->getNode();
-        $this->assertEquals(array(array()), $tree->getDefaultValue());
+        $this->assertEquals([[]], $tree->getDefaultValue());
     }
 
     /**
@@ -134,14 +134,14 @@ public function testPrototypedArrayNodeDefault($args, $shouldThrowWhenUsingAttrA
 
     public function providePrototypedArrayNodeDefaults()
     {
-        return array(
-            array(null, true, false, array(array())),
-            array(2, true, false, array(array(), array())),
-            array('2', false, true, array('2' => array())),
-            array('foo', false, true, array('foo' => array())),
-            array(array('foo'), false, true, array('foo' => array())),
-            array(array('foo', 'bar'), false, true, array('foo' => array(), 'bar' => array())),
-        );
+        return [
+            [null, true, false, [[]]],
+            [2, true, false, [[], []]],
+            ['2', false, true, ['2' => []]],
+            ['foo', false, true, ['foo' => []]],
+            [['foo'], false, true, ['foo' => []]],
+            [['foo', 'bar'], false, true, ['foo' => [], 'bar' => []]],
+        ];
     }
 
     public function testNestedPrototypedArrayNodes()
@@ -167,7 +167,7 @@ public function testEnabledNodeDefaults()
                 ->scalarNode('foo')->defaultValue('bar')->end()
         ;
 
-        $this->assertEquals(array('enabled' => false, 'foo' => 'bar'), $node->getNode()->getDefaultValue());
+        $this->assertEquals(['enabled' => false, 'foo' => 'bar'], $node->getNode()->getDefaultValue());
     }
 
     /**
@@ -196,9 +196,9 @@ public function testCanBeDisabled()
         $node->canBeDisabled();
 
         $this->assertTrue($this->getField($node, 'addDefaults'));
-        $this->assertEquals(array('enabled' => false), $this->getField($node, 'falseEquivalent'));
-        $this->assertEquals(array('enabled' => true), $this->getField($node, 'trueEquivalent'));
-        $this->assertEquals(array('enabled' => true), $this->getField($node, 'nullEquivalent'));
+        $this->assertEquals(['enabled' => false], $this->getField($node, 'falseEquivalent'));
+        $this->assertEquals(['enabled' => true], $this->getField($node, 'trueEquivalent'));
+        $this->assertEquals(['enabled' => true], $this->getField($node, 'nullEquivalent'));
 
         $nodeChildren = $this->getField($node, 'children');
         $this->assertArrayHasKey('enabled', $nodeChildren);
@@ -248,7 +248,7 @@ public function testUnsetChild()
             ->end()
         ;
 
-        $this->assertSame(array(), $node->getNode()->normalize(array('value' => null)));
+        $this->assertSame([], $node->getNode()->normalize(['value' => null]));
     }
 
     public function testPrototypeVariable()
@@ -295,14 +295,14 @@ public function testPrototypeEnum()
 
     public function getEnableableNodeFixtures()
     {
-        return array(
-            array(array('enabled' => true, 'foo' => 'bar'), array(true), 'true enables an enableable node'),
-            array(array('enabled' => true, 'foo' => 'bar'), array(null), 'null enables an enableable node'),
-            array(array('enabled' => true, 'foo' => 'bar'), array(array('enabled' => true)), 'An enableable node can be enabled'),
-            array(array('enabled' => true, 'foo' => 'baz'), array(array('foo' => 'baz')), 'any configuration enables an enableable node'),
-            array(array('enabled' => false, 'foo' => 'baz'), array(array('foo' => 'baz', 'enabled' => false)), 'An enableable node can be disabled'),
-            array(array('enabled' => false, 'foo' => 'bar'), array(false), 'false disables an enableable node'),
-        );
+        return [
+            [['enabled' => true, 'foo' => 'bar'], [true], 'true enables an enableable node'],
+            [['enabled' => true, 'foo' => 'bar'], [null], 'null enables an enableable node'],
+            [['enabled' => true, 'foo' => 'bar'], [['enabled' => true]], 'An enableable node can be enabled'],
+            [['enabled' => true, 'foo' => 'baz'], [['foo' => 'baz']], 'any configuration enables an enableable node'],
+            [['enabled' => false, 'foo' => 'baz'], [['foo' => 'baz', 'enabled' => false]], 'An enableable node can be disabled'],
+            [['enabled' => false, 'foo' => 'bar'], [false], 'false disables an enableable node'],
+        ];
     }
 
     public function testRequiresAtLeastOneElement()
@@ -312,7 +312,7 @@ public function testRequiresAtLeastOneElement()
             ->requiresAtLeastOneElement()
             ->integerPrototype();
 
-        $node->getNode()->finalize(array(1));
+        $node->getNode()->finalize([1]);
 
         $this->addToAssertionCount(1);
     }
@@ -328,7 +328,7 @@ public function testCannotBeEmpty()
             ->cannotBeEmpty()
             ->integerPrototype();
 
-        $node->getNode()->finalize(array());
+        $node->getNode()->finalize([]);
     }
 
     public function testSetDeprecated()
@@ -354,7 +354,7 @@ public function testCannotBeEmptyOnConcreteNode()
         $node = new ArrayNodeDefinition('root');
         $node->cannotBeEmpty();
 
-        $node->getNode()->finalize(array());
+        $node->getNode()->finalize([]);
     }
 
     protected function getField($object, $field)
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/NodeDefinitionTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/NodeDefinitionTest.php
index 1a602bb9dab5..fba713386a0a 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/NodeDefinitionTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/NodeDefinitionTest.php
@@ -20,7 +20,7 @@ class NodeDefinitionTest extends TestCase
 {
     public function testDefaultPathSeparatorIsDot()
     {
-        $node = $this->getMockForAbstractClass(NodeDefinition::class, array('foo'));
+        $node = $this->getMockForAbstractClass(NodeDefinition::class, ['foo']);
 
         $this->assertAttributeSame('.', 'pathSeparator', $node);
     }
diff --git a/src/Symfony/Component/Config/Tests/Definition/EnumNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/EnumNodeTest.php
index b006fcca17d7..8d679be98048 100644
--- a/src/Symfony/Component/Config/Tests/Definition/EnumNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/EnumNodeTest.php
@@ -45,7 +45,7 @@ public function testConstructionWithOneDistinctValue()
 
     public function testConstructionWithNullName()
     {
-        $node = new EnumNode(null, null, array('foo'));
+        $node = new EnumNode(null, null, ['foo']);
         $this->assertSame('foo', $node->finalize('foo'));
     }
 
diff --git a/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php b/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
index 229e83e89bbc..61f70ebc86f8 100644
--- a/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
+++ b/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
@@ -110,29 +110,29 @@ public function testHashedSignature($changeExpected, $changedLine, $changedCode)
 
     public function provideHashedSignature()
     {
-        yield array(0, 0, "// line change\n\n");
-        yield array(1, 0, '/** class docblock */');
-        yield array(1, 1, 'abstract class %s');
-        yield array(1, 1, 'final class %s');
-        yield array(1, 1, 'class %s extends Exception');
-        yield array(1, 1, 'class %s implements '.DummyInterface::class);
-        yield array(1, 3, 'const FOO = 456;');
-        yield array(1, 3, 'const BAR = 123;');
-        yield array(1, 4, '/** pub docblock */');
-        yield array(1, 5, 'protected $pub = array();');
-        yield array(1, 5, 'public $pub = array(123);');
-        yield array(1, 6, '/** prot docblock */');
-        yield array(1, 7, 'private $prot;');
-        yield array(0, 8, '/** priv docblock */');
-        yield array(0, 9, 'private $priv = 123;');
-        yield array(1, 10, '/** pub docblock */');
-        yield array(1, 11, 'public function pub(...$arg) {}');
-        yield array(1, 11, 'public function pub($arg = null): Foo {}');
-        yield array(0, 11, "public function pub(\$arg = null) {\nreturn 123;\n}");
-        yield array(1, 12, '/** prot docblock */');
-        yield array(1, 13, 'protected function prot($a = array(123)) {}');
-        yield array(0, 14, '/** priv docblock */');
-        yield array(0, 15, '');
+        yield [0, 0, "// line change\n\n"];
+        yield [1, 0, '/** class docblock */'];
+        yield [1, 1, 'abstract class %s'];
+        yield [1, 1, 'final class %s'];
+        yield [1, 1, 'class %s extends Exception'];
+        yield [1, 1, 'class %s implements '.DummyInterface::class];
+        yield [1, 3, 'const FOO = 456;'];
+        yield [1, 3, 'const BAR = 123;'];
+        yield [1, 4, '/** pub docblock */'];
+        yield [1, 5, 'protected $pub = array();'];
+        yield [1, 5, 'public $pub = array(123);'];
+        yield [1, 6, '/** prot docblock */'];
+        yield [1, 7, 'private $prot;'];
+        yield [0, 8, '/** priv docblock */'];
+        yield [0, 9, 'private $priv = 123;'];
+        yield [1, 10, '/** pub docblock */'];
+        yield [1, 11, 'public function pub(...$arg) {}'];
+        yield [1, 11, 'public function pub($arg = null): Foo {}'];
+        yield [0, 11, "public function pub(\$arg = null) {\nreturn 123;\n}"];
+        yield [1, 12, '/** prot docblock */'];
+        yield [1, 13, 'protected function prot($a = array(123)) {}'];
+        yield [0, 14, '/** priv docblock */'];
+        yield [0, 15, ''];
     }
 
     public function testEventSubscriber()
@@ -140,7 +140,7 @@ public function testEventSubscriber()
         $res = new ReflectionClassResource(new \ReflectionClass(TestEventSubscriber::class));
         $this->assertTrue($res->isFresh(0));
 
-        TestEventSubscriber::$subscribedEvents = array(123);
+        TestEventSubscriber::$subscribedEvents = [123];
         $this->assertFalse($res->isFresh(0));
 
         $res = new ReflectionClassResource(new \ReflectionClass(TestEventSubscriber::class));
@@ -152,7 +152,7 @@ public function testServiceSubscriber()
         $res = new ReflectionClassResource(new \ReflectionClass(TestServiceSubscriber::class));
         $this->assertTrue($res->isFresh(0));
 
-        TestServiceSubscriber::$subscribedServices = array(123);
+        TestServiceSubscriber::$subscribedServices = [123];
         $this->assertFalse($res->isFresh(0));
 
         $res = new ReflectionClassResource(new \ReflectionClass(TestServiceSubscriber::class));
@@ -166,7 +166,7 @@ interface DummyInterface
 
 class TestEventSubscriber implements EventSubscriberInterface
 {
-    public static $subscribedEvents = array();
+    public static $subscribedEvents = [];
 
     public static function getSubscribedEvents()
     {
@@ -176,7 +176,7 @@ public static function getSubscribedEvents()
 
 class TestServiceSubscriber implements ServiceSubscriberInterface
 {
-    public static $subscribedServices = array();
+    public static $subscribedServices = [];
 
     public static function getSubscribedServices()
     {
diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
index edfaa5060516..d3ac870c68d9 100644
--- a/src/Symfony/Component/Console/Application.php
+++ b/src/Symfony/Component/Console/Application.php
@@ -62,7 +62,7 @@
  */
 class Application
 {
-    private $commands = array();
+    private $commands = [];
     private $wantHelps = false;
     private $runningCommand;
     private $name;
@@ -193,17 +193,17 @@ public function run(InputInterface $input = null, OutputInterface $output = null
      */
     public function doRun(InputInterface $input, OutputInterface $output)
     {
-        if (true === $input->hasParameterOption(array('--version', '-V'), true)) {
+        if (true === $input->hasParameterOption(['--version', '-V'], true)) {
             $output->writeln($this->getLongVersion());
 
             return 0;
         }
 
         $name = $this->getCommandName($input);
-        if (true === $input->hasParameterOption(array('--help', '-h'), true)) {
+        if (true === $input->hasParameterOption(['--help', '-h'], true)) {
             if (!$name) {
                 $name = 'help';
-                $input = new ArrayInput(array('command_name' => $this->defaultCommand));
+                $input = new ArrayInput(['command_name' => $this->defaultCommand]);
             } else {
                 $this->wantHelps = true;
             }
@@ -214,9 +214,9 @@ public function doRun(InputInterface $input, OutputInterface $output)
             $definition = $this->getDefinition();
             $definition->setArguments(array_merge(
                 $definition->getArguments(),
-                array(
+                [
                     'command' => new InputArgument('command', InputArgument::OPTIONAL, $definition->getArgument('command')->getDescription(), $name),
-                )
+                ]
             ));
         }
 
@@ -535,7 +535,7 @@ public function has($name)
      */
     public function getNamespaces()
     {
-        $namespaces = array();
+        $namespaces = [];
         foreach ($this->all() as $command) {
             $namespaces = array_merge($namespaces, $this->extractAllNamespaces($command->getName()));
 
@@ -602,7 +602,7 @@ public function find($name)
     {
         $this->init();
 
-        $aliases = array();
+        $aliases = [];
         $allCommands = $this->commandLoader ? array_merge($this->commandLoader->getNames(), array_keys($this->commands)) : array_keys($this->commands);
         $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]).'[^:]*'; }, $name);
         $commands = preg_grep('{^'.$expr.'}', $allCommands);
@@ -695,7 +695,7 @@ public function all($namespace = null)
             return $commands;
         }
 
-        $commands = array();
+        $commands = [];
         foreach ($this->commands as $name => $command) {
             if ($namespace === $this->extractNamespace($name, substr_count($namespace, ':') + 1)) {
                 $commands[$name] = $command;
@@ -722,7 +722,7 @@ public function all($namespace = null)
      */
     public static function getAbbreviations($names)
     {
-        $abbrevs = array();
+        $abbrevs = [];
         foreach ($names as $name) {
             for ($len = \strlen($name); $len > 0; --$len) {
                 $abbrev = substr($name, 0, $len);
@@ -760,18 +760,18 @@ protected function doRenderException(\Exception $e, OutputInterface $output)
             }
 
             $width = $this->terminal->getWidth() ? $this->terminal->getWidth() - 1 : PHP_INT_MAX;
-            $lines = array();
-            foreach ('' !== $message ? preg_split('/\r?\n/', $message) : array() as $line) {
+            $lines = [];
+            foreach ('' !== $message ? preg_split('/\r?\n/', $message) : [] as $line) {
                 foreach ($this->splitStringByWidth($line, $width - 4) as $line) {
                     // pre-format lines to get the right string length
                     $lineLength = Helper::strlen($line) + 4;
-                    $lines[] = array($line, $lineLength);
+                    $lines[] = [$line, $lineLength];
 
                     $len = max($lineLength, $len);
                 }
             }
 
-            $messages = array();
+            $messages = [];
             if (!$e instanceof ExceptionInterface || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                 $messages[] = sprintf('<comment>%s</comment>', OutputFormatter::escape(sprintf('In %s line %s:', basename($e->getFile()) ?: 'n/a', $e->getLine() ?: 'n/a')));
             }
@@ -793,12 +793,12 @@ protected function doRenderException(\Exception $e, OutputInterface $output)
                 // exception related properties
                 $trace = $e->getTrace();
 
-                array_unshift($trace, array(
+                array_unshift($trace, [
                     'function' => '',
                     'file' => $e->getFile() ?: 'n/a',
                     'line' => $e->getLine() ?: 'n/a',
-                    'args' => array(),
-                ));
+                    'args' => [],
+                ]);
 
                 for ($i = 0, $count = \count($trace); $i < $count; ++$i) {
                     $class = isset($trace[$i]['class']) ? $trace[$i]['class'] : '';
@@ -820,13 +820,13 @@ protected function doRenderException(\Exception $e, OutputInterface $output)
      */
     protected function configureIO(InputInterface $input, OutputInterface $output)
     {
-        if (true === $input->hasParameterOption(array('--ansi'), true)) {
+        if (true === $input->hasParameterOption(['--ansi'], true)) {
             $output->setDecorated(true);
-        } elseif (true === $input->hasParameterOption(array('--no-ansi'), true)) {
+        } elseif (true === $input->hasParameterOption(['--no-ansi'], true)) {
             $output->setDecorated(false);
         }
 
-        if (true === $input->hasParameterOption(array('--no-interaction', '-n'), true)) {
+        if (true === $input->hasParameterOption(['--no-interaction', '-n'], true)) {
             $input->setInteractive(false);
         } elseif (\function_exists('posix_isatty')) {
             $inputStream = null;
@@ -848,7 +848,7 @@ protected function configureIO(InputInterface $input, OutputInterface $output)
             default: $shellVerbosity = 0; break;
         }
 
-        if (true === $input->hasParameterOption(array('--quiet', '-q'), true)) {
+        if (true === $input->hasParameterOption(['--quiet', '-q'], true)) {
             $output->setVerbosity(OutputInterface::VERBOSITY_QUIET);
             $shellVerbosity = -1;
         } else {
@@ -949,7 +949,7 @@ protected function getCommandName(InputInterface $input)
      */
     protected function getDefaultInputDefinition()
     {
-        return new InputDefinition(array(
+        return new InputDefinition([
             new InputArgument('command', InputArgument::REQUIRED, 'The command to execute'),
 
             new InputOption('--help', '-h', InputOption::VALUE_NONE, 'Display this help message'),
@@ -959,7 +959,7 @@ protected function getDefaultInputDefinition()
             new InputOption('--ansi', '', InputOption::VALUE_NONE, 'Force ANSI output'),
             new InputOption('--no-ansi', '', InputOption::VALUE_NONE, 'Disable ANSI output'),
             new InputOption('--no-interaction', '-n', InputOption::VALUE_NONE, 'Do not ask any interactive question'),
-        ));
+        ]);
     }
 
     /**
@@ -969,7 +969,7 @@ protected function getDefaultInputDefinition()
      */
     protected function getDefaultCommands()
     {
-        return array(new HelpCommand(), new ListCommand());
+        return [new HelpCommand(), new ListCommand()];
     }
 
     /**
@@ -979,12 +979,12 @@ protected function getDefaultCommands()
      */
     protected function getDefaultHelperSet()
     {
-        return new HelperSet(array(
+        return new HelperSet([
             new FormatterHelper(),
             new DebugFormatterHelper(),
             new ProcessHelper(),
             new QuestionHelper(),
-        ));
+        ]);
     }
 
     /**
@@ -1029,9 +1029,9 @@ public function extractNamespace($name, $limit = null)
     private function findAlternatives($name, $collection)
     {
         $threshold = 1e3;
-        $alternatives = array();
+        $alternatives = [];
 
-        $collectionParts = array();
+        $collectionParts = [];
         foreach ($collection as $item) {
             $collectionParts[$item] = explode(':', $item);
         }
@@ -1108,7 +1108,7 @@ private function splitStringByWidth($string, $width)
         }
 
         $utf8String = mb_convert_encoding($string, 'utf8', $encoding);
-        $lines = array();
+        $lines = [];
         $line = '';
         foreach (preg_split('//u', $utf8String) as $char) {
             // test if $char could be appended to current line
@@ -1139,7 +1139,7 @@ private function extractAllNamespaces($name)
     {
         // -1 as third argument is needed to skip the command short name when exploding
         $parts = explode(':', $name, -1);
-        $namespaces = array();
+        $namespaces = [];
 
         foreach ($parts as $part) {
             if (\count($namespaces)) {
diff --git a/src/Symfony/Component/Console/DependencyInjection/AddConsoleCommandPass.php b/src/Symfony/Component/Console/DependencyInjection/AddConsoleCommandPass.php
index bf14ba2d1758..666c8fa5987c 100644
--- a/src/Symfony/Component/Console/DependencyInjection/AddConsoleCommandPass.php
+++ b/src/Symfony/Component/Console/DependencyInjection/AddConsoleCommandPass.php
@@ -38,9 +38,9 @@ public function __construct(string $commandLoaderServiceId = 'console.command_lo
     public function process(ContainerBuilder $container)
     {
         $commandServices = $container->findTaggedServiceIds($this->commandTag, true);
-        $lazyCommandMap = array();
-        $lazyCommandRefs = array();
-        $serviceIds = array();
+        $lazyCommandMap = [];
+        $lazyCommandRefs = [];
+        $serviceIds = [];
 
         foreach ($commandServices as $id => $tags) {
             $definition = $container->getDefinition($id);
@@ -72,7 +72,7 @@ public function process(ContainerBuilder $container)
             unset($tags[0]);
             $lazyCommandMap[$commandName] = $id;
             $lazyCommandRefs[$id] = new TypedReference($id, $class);
-            $aliases = array();
+            $aliases = [];
 
             foreach ($tags as $tag) {
                 if (isset($tag['command'])) {
@@ -81,17 +81,17 @@ public function process(ContainerBuilder $container)
                 }
             }
 
-            $definition->addMethodCall('setName', array($commandName));
+            $definition->addMethodCall('setName', [$commandName]);
 
             if ($aliases) {
-                $definition->addMethodCall('setAliases', array($aliases));
+                $definition->addMethodCall('setAliases', [$aliases]);
             }
         }
 
         $container
             ->register($this->commandLoaderServiceId, ContainerCommandLoader::class)
             ->setPublic(true)
-            ->setArguments(array(ServiceLocatorTagPass::register($container, $lazyCommandRefs), $lazyCommandMap));
+            ->setArguments([ServiceLocatorTagPass::register($container, $lazyCommandRefs), $lazyCommandMap]);
 
         $container->setParameter('console.command.ids', $serviceIds);
     }
diff --git a/src/Symfony/Component/Console/Exception/CommandNotFoundException.php b/src/Symfony/Component/Console/Exception/CommandNotFoundException.php
index 2f6e644b99a9..15ac522c6788 100644
--- a/src/Symfony/Component/Console/Exception/CommandNotFoundException.php
+++ b/src/Symfony/Component/Console/Exception/CommandNotFoundException.php
@@ -26,7 +26,7 @@ class CommandNotFoundException extends \InvalidArgumentException implements Exce
      * @param int        $code         Exception code
      * @param \Exception $previous     Previous exception used for the exception chaining
      */
-    public function __construct(string $message, array $alternatives = array(), int $code = 0, \Exception $previous = null)
+    public function __construct(string $message, array $alternatives = [], int $code = 0, \Exception $previous = null)
     {
         parent::__construct($message, $code, $previous);
 
diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatter.php b/src/Symfony/Component/Console/Formatter/OutputFormatter.php
index d685a117eb41..be23c10562b3 100644
--- a/src/Symfony/Component/Console/Formatter/OutputFormatter.php
+++ b/src/Symfony/Component/Console/Formatter/OutputFormatter.php
@@ -21,7 +21,7 @@
 class OutputFormatter implements OutputFormatterInterface
 {
     private $decorated;
-    private $styles = array();
+    private $styles = [];
     private $styleStack;
 
     /**
@@ -65,7 +65,7 @@ public static function escapeTrailingBackslash($text)
      * @param bool                            $decorated Whether this formatter should actually decorate strings
      * @param OutputFormatterStyleInterface[] $styles    Array of "name => FormatterStyle" instances
      */
-    public function __construct(bool $decorated = false, array $styles = array())
+    public function __construct(bool $decorated = false, array $styles = [])
     {
         $this->decorated = $decorated;
 
@@ -169,7 +169,7 @@ public function format($message)
         $output .= $this->applyCurrentStyle(substr($message, $offset));
 
         if (false !== strpos($output, "\0")) {
-            return strtr($output, array("\0" => '\\', '\\<' => '<'));
+            return strtr($output, ["\0" => '\\', '\\<' => '<']);
         }
 
         return str_replace('\\<', '<', $output);
diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php b/src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php
index 906021f6f94a..dcc1beb46ad2 100644
--- a/src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php
+++ b/src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php
@@ -20,39 +20,39 @@
  */
 class OutputFormatterStyle implements OutputFormatterStyleInterface
 {
-    private static $availableForegroundColors = array(
-        'black' => array('set' => 30, 'unset' => 39),
-        'red' => array('set' => 31, 'unset' => 39),
-        'green' => array('set' => 32, 'unset' => 39),
-        'yellow' => array('set' => 33, 'unset' => 39),
-        'blue' => array('set' => 34, 'unset' => 39),
-        'magenta' => array('set' => 35, 'unset' => 39),
-        'cyan' => array('set' => 36, 'unset' => 39),
-        'white' => array('set' => 37, 'unset' => 39),
-        'default' => array('set' => 39, 'unset' => 39),
-    );
-    private static $availableBackgroundColors = array(
-        'black' => array('set' => 40, 'unset' => 49),
-        'red' => array('set' => 41, 'unset' => 49),
-        'green' => array('set' => 42, 'unset' => 49),
-        'yellow' => array('set' => 43, 'unset' => 49),
-        'blue' => array('set' => 44, 'unset' => 49),
-        'magenta' => array('set' => 45, 'unset' => 49),
-        'cyan' => array('set' => 46, 'unset' => 49),
-        'white' => array('set' => 47, 'unset' => 49),
-        'default' => array('set' => 49, 'unset' => 49),
-    );
-    private static $availableOptions = array(
-        'bold' => array('set' => 1, 'unset' => 22),
-        'underscore' => array('set' => 4, 'unset' => 24),
-        'blink' => array('set' => 5, 'unset' => 25),
-        'reverse' => array('set' => 7, 'unset' => 27),
-        'conceal' => array('set' => 8, 'unset' => 28),
-    );
+    private static $availableForegroundColors = [
+        'black' => ['set' => 30, 'unset' => 39],
+        'red' => ['set' => 31, 'unset' => 39],
+        'green' => ['set' => 32, 'unset' => 39],
+        'yellow' => ['set' => 33, 'unset' => 39],
+        'blue' => ['set' => 34, 'unset' => 39],
+        'magenta' => ['set' => 35, 'unset' => 39],
+        'cyan' => ['set' => 36, 'unset' => 39],
+        'white' => ['set' => 37, 'unset' => 39],
+        'default' => ['set' => 39, 'unset' => 39],
+    ];
+    private static $availableBackgroundColors = [
+        'black' => ['set' => 40, 'unset' => 49],
+        'red' => ['set' => 41, 'unset' => 49],
+        'green' => ['set' => 42, 'unset' => 49],
+        'yellow' => ['set' => 43, 'unset' => 49],
+        'blue' => ['set' => 44, 'unset' => 49],
+        'magenta' => ['set' => 45, 'unset' => 49],
+        'cyan' => ['set' => 46, 'unset' => 49],
+        'white' => ['set' => 47, 'unset' => 49],
+        'default' => ['set' => 49, 'unset' => 49],
+    ];
+    private static $availableOptions = [
+        'bold' => ['set' => 1, 'unset' => 22],
+        'underscore' => ['set' => 4, 'unset' => 24],
+        'blink' => ['set' => 5, 'unset' => 25],
+        'reverse' => ['set' => 7, 'unset' => 27],
+        'conceal' => ['set' => 8, 'unset' => 28],
+    ];
 
     private $foreground;
     private $background;
-    private $options = array();
+    private $options = [];
 
     /**
      * Initializes output formatter style.
@@ -61,7 +61,7 @@ class OutputFormatterStyle implements OutputFormatterStyleInterface
      * @param string|null $background The style background color name
      * @param array       $options    The style options
      */
-    public function __construct(string $foreground = null, string $background = null, array $options = array())
+    public function __construct(string $foreground = null, string $background = null, array $options = [])
     {
         if (null !== $foreground) {
             $this->setForeground($foreground);
@@ -160,7 +160,7 @@ public function unsetOption($option)
      */
     public function setOptions(array $options)
     {
-        $this->options = array();
+        $this->options = [];
 
         foreach ($options as $option) {
             $this->setOption($option);
@@ -176,8 +176,8 @@ public function setOptions(array $options)
      */
     public function apply($text)
     {
-        $setCodes = array();
-        $unsetCodes = array();
+        $setCodes = [];
+        $unsetCodes = [];
 
         if (null !== $this->foreground) {
             $setCodes[] = $this->foreground['set'];
diff --git a/src/Symfony/Component/Console/Helper/Table.php b/src/Symfony/Component/Console/Helper/Table.php
index ca432e3b2687..5b358a10c847 100644
--- a/src/Symfony/Component/Console/Helper/Table.php
+++ b/src/Symfony/Component/Console/Helper/Table.php
@@ -37,17 +37,17 @@ class Table
     /**
      * Table headers.
      */
-    private $headers = array();
+    private $headers = [];
 
     /**
      * Table rows.
      */
-    private $rows = array();
+    private $rows = [];
 
     /**
      * Column widths cache.
      */
-    private $effectiveColumnWidths = array();
+    private $effectiveColumnWidths = [];
 
     /**
      * Number of columns cache.
@@ -69,14 +69,14 @@ class Table
     /**
      * @var array
      */
-    private $columnStyles = array();
+    private $columnStyles = [];
 
     /**
      * User set column widths.
      *
      * @var array
      */
-    private $columnWidths = array();
+    private $columnWidths = [];
 
     private static $styles;
 
@@ -207,7 +207,7 @@ public function setColumnWidth($columnIndex, $width)
      */
     public function setColumnWidths(array $widths)
     {
-        $this->columnWidths = array();
+        $this->columnWidths = [];
         foreach ($widths as $index => $width) {
             $this->setColumnWidth($index, $width);
         }
@@ -219,7 +219,7 @@ public function setHeaders(array $headers)
     {
         $headers = array_values($headers);
         if (!empty($headers) && !\is_array($headers[0])) {
-            $headers = array($headers);
+            $headers = [$headers];
         }
 
         $this->headers = $headers;
@@ -229,7 +229,7 @@ public function setHeaders(array $headers)
 
     public function setRows(array $rows)
     {
-        $this->rows = array();
+        $this->rows = [];
 
         return $this->addRows($rows);
     }
@@ -301,7 +301,7 @@ public function setRow($column, array $row)
      */
     public function render()
     {
-        $rows = array_merge($this->headers, array($divider = new TableSeparator()), $this->rows);
+        $rows = array_merge($this->headers, [$divider = new TableSeparator()], $this->rows);
         $this->calculateNumberOfColumns($rows);
 
         $rows = $this->buildTableRows($rows);
@@ -360,13 +360,13 @@ private function renderRowSeparator(int $type = self::SEPARATOR_MID)
 
         $crossings = $this->style->getCrossingChars();
         if (self::SEPARATOR_MID === $type) {
-            list($horizontal, $leftChar, $midChar, $rightChar) = array($borders[2], $crossings[8], $crossings[0], $crossings[4]);
+            list($horizontal, $leftChar, $midChar, $rightChar) = [$borders[2], $crossings[8], $crossings[0], $crossings[4]];
         } elseif (self::SEPARATOR_TOP === $type) {
-            list($horizontal, $leftChar, $midChar, $rightChar) = array($borders[0], $crossings[1], $crossings[2], $crossings[3]);
+            list($horizontal, $leftChar, $midChar, $rightChar) = [$borders[0], $crossings[1], $crossings[2], $crossings[3]];
         } elseif (self::SEPARATOR_TOP_BOTTOM === $type) {
-            list($horizontal, $leftChar, $midChar, $rightChar) = array($borders[0], $crossings[9], $crossings[10], $crossings[11]);
+            list($horizontal, $leftChar, $midChar, $rightChar) = [$borders[0], $crossings[9], $crossings[10], $crossings[11]];
         } else {
-            list($horizontal, $leftChar, $midChar, $rightChar) = array($borders[0], $crossings[7], $crossings[6], $crossings[5]);
+            list($horizontal, $leftChar, $midChar, $rightChar) = [$borders[0], $crossings[7], $crossings[6], $crossings[5]];
         }
 
         $markup = $leftChar;
@@ -443,7 +443,7 @@ private function renderCell(array $row, int $column, string $cellFormat)
      */
     private function calculateNumberOfColumns($rows)
     {
-        $columns = array(0);
+        $columns = [0];
         foreach ($rows as $row) {
             if ($row instanceof TableSeparator) {
                 continue;
@@ -457,7 +457,7 @@ private function calculateNumberOfColumns($rows)
 
     private function buildTableRows($rows)
     {
-        $unmergedRows = array();
+        $unmergedRows = [];
         for ($rowKey = 0; $rowKey < \count($rows); ++$rowKey) {
             $rows = $this->fillNextRows($rows, $rowKey);
 
@@ -469,7 +469,7 @@ private function buildTableRows($rows)
                 $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                 foreach ($lines as $lineKey => $line) {
                     if ($cell instanceof TableCell) {
-                        $line = new TableCell($line, array('colspan' => $cell->getColspan()));
+                        $line = new TableCell($line, ['colspan' => $cell->getColspan()]);
                     }
                     if (0 === $lineKey) {
                         $rows[$rowKey][$column] = $line;
@@ -495,7 +495,7 @@ private function buildTableRows($rows)
 
     private function calculateRowCount(): int
     {
-        $numberOfRows = \count(iterator_to_array($this->buildTableRows(array_merge($this->headers, array(new TableSeparator()), $this->rows))));
+        $numberOfRows = \count(iterator_to_array($this->buildTableRows(array_merge($this->headers, [new TableSeparator()], $this->rows))));
 
         if ($this->headers) {
             ++$numberOfRows; // Add row for header separator
@@ -513,27 +513,27 @@ private function calculateRowCount(): int
      */
     private function fillNextRows(array $rows, int $line): array
     {
-        $unmergedRows = array();
+        $unmergedRows = [];
         foreach ($rows[$line] as $column => $cell) {
             if (null !== $cell && !$cell instanceof TableCell && !is_scalar($cell) && !(\is_object($cell) && method_exists($cell, '__toString'))) {
                 throw new InvalidArgumentException(sprintf('A cell must be a TableCell, a scalar or an object implementing __toString, %s given.', \gettype($cell)));
             }
             if ($cell instanceof TableCell && $cell->getRowspan() > 1) {
                 $nbLines = $cell->getRowspan() - 1;
-                $lines = array($cell);
+                $lines = [$cell];
                 if (strstr($cell, "\n")) {
                     $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                     $nbLines = \count($lines) > $nbLines ? substr_count($cell, "\n") : $nbLines;
 
-                    $rows[$line][$column] = new TableCell($lines[0], array('colspan' => $cell->getColspan()));
+                    $rows[$line][$column] = new TableCell($lines[0], ['colspan' => $cell->getColspan()]);
                     unset($lines[0]);
                 }
 
                 // create a two dimensional array (rowspan x colspan)
-                $unmergedRows = array_replace_recursive(array_fill($line + 1, $nbLines, array()), $unmergedRows);
+                $unmergedRows = array_replace_recursive(array_fill($line + 1, $nbLines, []), $unmergedRows);
                 foreach ($unmergedRows as $unmergedRowKey => $unmergedRow) {
                     $value = isset($lines[$unmergedRowKey - $line]) ? $lines[$unmergedRowKey - $line] : '';
-                    $unmergedRows[$unmergedRowKey][$column] = new TableCell($value, array('colspan' => $cell->getColspan()));
+                    $unmergedRows[$unmergedRowKey][$column] = new TableCell($value, ['colspan' => $cell->getColspan()]);
                     if ($nbLines === $unmergedRowKey - $line) {
                         break;
                     }
@@ -546,7 +546,7 @@ private function fillNextRows(array $rows, int $line): array
             if (isset($rows[$unmergedRowKey]) && \is_array($rows[$unmergedRowKey]) && ($this->getNumberOfColumns($rows[$unmergedRowKey]) + $this->getNumberOfColumns($unmergedRows[$unmergedRowKey]) <= $this->numberOfColumns)) {
                 foreach ($unmergedRow as $cellKey => $cell) {
                     // insert cell into row at cellKey position
-                    array_splice($rows[$unmergedRowKey], $cellKey, 0, array($cell));
+                    array_splice($rows[$unmergedRowKey], $cellKey, 0, [$cell]);
                 }
             } else {
                 $row = $this->copyRow($rows, $unmergedRowKey - 1);
@@ -555,7 +555,7 @@ private function fillNextRows(array $rows, int $line): array
                         $row[$column] = $unmergedRow[$column];
                     }
                 }
-                array_splice($rows, $unmergedRowKey, 0, array($row));
+                array_splice($rows, $unmergedRowKey, 0, [$row]);
             }
         }
 
@@ -567,7 +567,7 @@ private function fillNextRows(array $rows, int $line): array
      */
     private function fillCells($row)
     {
-        $newRow = array();
+        $newRow = [];
         foreach ($row as $column => $cell) {
             $newRow[] = $cell;
             if ($cell instanceof TableCell && $cell->getColspan() > 1) {
@@ -587,7 +587,7 @@ private function copyRow(array $rows, int $line): array
         foreach ($row as $cellKey => $cellValue) {
             $row[$cellKey] = '';
             if ($cellValue instanceof TableCell) {
-                $row[$cellKey] = new TableCell('', array('colspan' => $cellValue->getColspan()));
+                $row[$cellKey] = new TableCell('', ['colspan' => $cellValue->getColspan()]);
             }
         }
 
@@ -629,7 +629,7 @@ private function getRowColumns(array $row): array
     private function calculateColumnsWidth(iterable $rows)
     {
         for ($column = 0; $column < $this->numberOfColumns; ++$column) {
-            $lengths = array();
+            $lengths = [];
             foreach ($rows as $row) {
                 if ($row instanceof TableSeparator) {
                     continue;
@@ -679,7 +679,7 @@ private function getCellWidth(array $row, int $column): int
      */
     private function cleanup()
     {
-        $this->effectiveColumnWidths = array();
+        $this->effectiveColumnWidths = [];
         $this->numberOfColumns = null;
     }
 
@@ -720,14 +720,14 @@ private static function initStyles()
             ->setCrossingChars('┼', '╔', '╤', '╗', '╢', '╝', '╧', '╚', '╟', '╠', '╪', '╣')
         ;
 
-        return array(
+        return [
             'default' => new TableStyle(),
             'borderless' => $borderless,
             'compact' => $compact,
             'symfony-style-guide' => $styleGuide,
             'box' => $box,
             'box-double' => $boxDouble,
-        );
+        ];
     }
 
     private function resolveStyle($name)
diff --git a/src/Symfony/Component/Console/Helper/TableCell.php b/src/Symfony/Component/Console/Helper/TableCell.php
index f800fb44e30d..5b6af4a933b3 100644
--- a/src/Symfony/Component/Console/Helper/TableCell.php
+++ b/src/Symfony/Component/Console/Helper/TableCell.php
@@ -19,12 +19,12 @@
 class TableCell
 {
     private $value;
-    private $options = array(
+    private $options = [
         'rowspan' => 1,
         'colspan' => 1,
-    );
+    ];
 
-    public function __construct(string $value = '', array $options = array())
+    public function __construct(string $value = '', array $options = [])
     {
         $this->value = $value;
 
diff --git a/src/Symfony/Component/Console/Helper/TableStyle.php b/src/Symfony/Component/Console/Helper/TableStyle.php
index 7612060f0f0d..4c553d8368f5 100644
--- a/src/Symfony/Component/Console/Helper/TableStyle.php
+++ b/src/Symfony/Component/Console/Helper/TableStyle.php
@@ -192,12 +192,12 @@ public function getVerticalBorderChar()
      */
     public function getBorderChars()
     {
-        return array(
+        return [
             $this->horizontalOutsideBorderChar,
             $this->verticalOutsideBorderChar,
             $this->horizontalInsideBorderChar,
             $this->verticalInsideBorderChar,
-        );
+        ];
     }
 
     /**
@@ -290,7 +290,7 @@ public function getCrossingChar()
      */
     public function getCrossingChars(): array
     {
-        return array(
+        return [
             $this->crossingChar,
             $this->crossingTopLeftChar,
             $this->crossingTopMidChar,
@@ -303,7 +303,7 @@ public function getCrossingChars(): array
             $this->crossingTopLeftBottomChar,
             $this->crossingTopMidBottomChar,
             $this->crossingTopRightBottomChar,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Output/ConsoleOutput.php b/src/Symfony/Component/Console/Output/ConsoleOutput.php
index 1d00ba050cdd..8430c9c82fd5 100644
--- a/src/Symfony/Component/Console/Output/ConsoleOutput.php
+++ b/src/Symfony/Component/Console/Output/ConsoleOutput.php
@@ -30,7 +30,7 @@
 class ConsoleOutput extends StreamOutput implements ConsoleOutputInterface
 {
     private $stderr;
-    private $consoleSectionOutputs = array();
+    private $consoleSectionOutputs = [];
 
     /**
      * @param int                           $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface)
diff --git a/src/Symfony/Component/Console/Output/ConsoleSectionOutput.php b/src/Symfony/Component/Console/Output/ConsoleSectionOutput.php
index d7e1685baac4..4ada2e86739b 100644
--- a/src/Symfony/Component/Console/Output/ConsoleSectionOutput.php
+++ b/src/Symfony/Component/Console/Output/ConsoleSectionOutput.php
@@ -21,7 +21,7 @@
  */
 class ConsoleSectionOutput extends StreamOutput
 {
-    private $content = array();
+    private $content = [];
     private $lines = 0;
     private $sections;
     private $terminal;
@@ -53,7 +53,7 @@ public function clear(int $lines = null)
             \array_splice($this->content, -($lines * 2)); // Multiply lines by 2 to cater for each new line added between content
         } else {
             $lines = $this->lines;
-            $this->content = array();
+            $this->content = [];
         }
 
         $this->lines -= $lines;
@@ -113,7 +113,7 @@ protected function doWrite($message, $newline)
     private function popStreamContentUntilCurrentSection(int $numberOfLinesToClearFromCurrentSection = 0): string
     {
         $numberOfLinesToClear = $numberOfLinesToClearFromCurrentSection;
-        $erasedContent = array();
+        $erasedContent = [];
 
         foreach ($this->sections as $section) {
             if ($section === $this) {
diff --git a/src/Symfony/Component/Console/Output/Output.php b/src/Symfony/Component/Console/Output/Output.php
index 00852e28ed01..9dd765113c02 100644
--- a/src/Symfony/Component/Console/Output/Output.php
+++ b/src/Symfony/Component/Console/Output/Output.php
@@ -138,7 +138,7 @@ public function writeln($messages, $options = self::OUTPUT_NORMAL)
     public function write($messages, $newline = false, $options = self::OUTPUT_NORMAL)
     {
         if (!is_iterable($messages)) {
-            $messages = array($messages);
+            $messages = [$messages];
         }
 
         $types = self::OUTPUT_NORMAL | self::OUTPUT_RAW | self::OUTPUT_PLAIN;
diff --git a/src/Symfony/Component/Console/Style/SymfonyStyle.php b/src/Symfony/Component/Console/Style/SymfonyStyle.php
index eb56a1f7e98e..b46162de683e 100644
--- a/src/Symfony/Component/Console/Style/SymfonyStyle.php
+++ b/src/Symfony/Component/Console/Style/SymfonyStyle.php
@@ -63,7 +63,7 @@ public function __construct(InputInterface $input, OutputInterface $output)
      */
     public function block($messages, $type = null, $style = null, $prefix = ' ', $padding = false, $escape = true)
     {
-        $messages = \is_array($messages) ? array_values($messages) : array($messages);
+        $messages = \is_array($messages) ? array_values($messages) : [$messages];
 
         $this->autoPrependBlock();
         $this->writeln($this->createBlock($messages, $type, $style, $prefix, $padding, $escape));
@@ -76,10 +76,10 @@ public function block($messages, $type = null, $style = null, $prefix = ' ', $pa
     public function title($message)
     {
         $this->autoPrependBlock();
-        $this->writeln(array(
+        $this->writeln([
             sprintf('<comment>%s</>', OutputFormatter::escapeTrailingBackslash($message)),
             sprintf('<comment>%s</>', str_repeat('=', Helper::strlenWithoutDecoration($this->getFormatter(), $message))),
-        ));
+        ]);
         $this->newLine();
     }
 
@@ -89,10 +89,10 @@ public function title($message)
     public function section($message)
     {
         $this->autoPrependBlock();
-        $this->writeln(array(
+        $this->writeln([
             sprintf('<comment>%s</>', OutputFormatter::escapeTrailingBackslash($message)),
             sprintf('<comment>%s</>', str_repeat('-', Helper::strlenWithoutDecoration($this->getFormatter(), $message))),
-        ));
+        ]);
         $this->newLine();
     }
 
@@ -117,7 +117,7 @@ public function text($message)
     {
         $this->autoPrependText();
 
-        $messages = \is_array($message) ? array_values($message) : array($message);
+        $messages = \is_array($message) ? array_values($message) : [$message];
         foreach ($messages as $message) {
             $this->writeln(sprintf(' %s', $message));
         }
@@ -307,7 +307,7 @@ public function askQuestion(Question $question)
     public function writeln($messages, $type = self::OUTPUT_NORMAL)
     {
         if (!is_iterable($messages)) {
-            $messages = array($messages);
+            $messages = [$messages];
         }
 
         foreach ($messages as $message) {
@@ -322,7 +322,7 @@ public function writeln($messages, $type = self::OUTPUT_NORMAL)
     public function write($messages, $newline = false, $type = self::OUTPUT_NORMAL)
     {
         if (!is_iterable($messages)) {
-            $messages = array($messages);
+            $messages = [$messages];
         }
 
         foreach ($messages as $message) {
@@ -392,7 +392,7 @@ private function createBlock(iterable $messages, string $type = null, string $st
     {
         $indentLength = 0;
         $prefixLength = Helper::strlenWithoutDecoration($this->getFormatter(), $prefix);
-        $lines = array();
+        $lines = [];
 
         if (null !== $type) {
             $type = sprintf('[%s] ', $type);
diff --git a/src/Symfony/Component/Console/Tester/CommandTester.php b/src/Symfony/Component/Console/Tester/CommandTester.php
index ecdc40c046ad..5e62fe662f8d 100644
--- a/src/Symfony/Component/Console/Tester/CommandTester.php
+++ b/src/Symfony/Component/Console/Tester/CommandTester.php
@@ -48,7 +48,7 @@ public function __construct(Command $command)
      *
      * @return int The command exit code
      */
-    public function execute(array $input, array $options = array())
+    public function execute(array $input, array $options = [])
     {
         // set the command name automatically if the application requires
         // this argument and no command name was passed
@@ -56,7 +56,7 @@ public function execute(array $input, array $options = array())
             && (null !== $application = $this->command->getApplication())
             && $application->getDefinition()->hasArgument('command')
         ) {
-            $input = array_merge(array('command' => $this->command->getName()), $input);
+            $input = array_merge(['command' => $this->command->getName()], $input);
         }
 
         $this->input = new ArrayInput($input);
diff --git a/src/Symfony/Component/Console/Tester/TesterTrait.php b/src/Symfony/Component/Console/Tester/TesterTrait.php
index 81991b0d1b3a..dca9ff5a9dbb 100644
--- a/src/Symfony/Component/Console/Tester/TesterTrait.php
+++ b/src/Symfony/Component/Console/Tester/TesterTrait.php
@@ -24,7 +24,7 @@ trait TesterTrait
 {
     /** @var StreamOutput */
     private $output;
-    private $inputs = array();
+    private $inputs = [];
 
     /**
      * Gets the display returned by the last execution of the command or application.
diff --git a/src/Symfony/Component/Console/Tests/ApplicationTest.php b/src/Symfony/Component/Console/Tests/ApplicationTest.php
index acc2d758c63e..d3401534a40d 100644
--- a/src/Symfony/Component/Console/Tests/ApplicationTest.php
+++ b/src/Symfony/Component/Console/Tests/ApplicationTest.php
@@ -84,7 +84,7 @@ public function testConstructor()
         $application = new Application('foo', 'bar');
         $this->assertEquals('foo', $application->getName(), '__construct() takes the application name as its first argument');
         $this->assertEquals('bar', $application->getVersion(), '__construct() takes the application version as its second argument');
-        $this->assertEquals(array('help', 'list'), array_keys($application->all()), '__construct() registered the help and list commands by default');
+        $this->assertEquals(['help', 'list'], array_keys($application->all()), '__construct() registered the help and list commands by default');
     }
 
     public function testSetGetName()
@@ -134,9 +134,9 @@ public function testAllWithCommandLoader()
         $commands = $application->all('foo');
         $this->assertCount(1, $commands, '->all() takes a namespace as its first argument');
 
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar1' => function () { return new \Foo1Command(); },
-        )));
+        ]));
         $commands = $application->all('foo');
         $this->assertCount(2, $commands, '->all() takes a namespace as its first argument');
         $this->assertInstanceOf(\FooCommand::class, $commands['foo:bar'], '->all() returns the registered commands');
@@ -158,9 +158,9 @@ public function testAdd()
         $this->assertEquals($foo, $commands['foo:bar'], '->add() registers a command');
 
         $application = new Application();
-        $application->addCommands(array($foo = new \FooCommand(), $foo1 = new \Foo1Command()));
+        $application->addCommands([$foo = new \FooCommand(), $foo1 = new \Foo1Command()]);
         $commands = $application->all();
-        $this->assertEquals(array($foo, $foo1), array($commands['foo:bar'], $commands['foo:bar1']), '->addCommands() registers an array of commands');
+        $this->assertEquals([$foo, $foo1], [$commands['foo:bar'], $commands['foo:bar1']], '->addCommands() registers an array of commands');
     }
 
     /**
@@ -206,9 +206,9 @@ public function testHasGetWithCommandLoader()
         $this->assertEquals($foo, $application->get('foo:bar'), '->get() returns a command by name');
         $this->assertEquals($foo, $application->get('afoobar'), '->get() returns a command by alias');
 
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar1' => function () { return new \Foo1Command(); },
-        )));
+        ]));
 
         $this->assertTrue($application->has('afoobar'), '->has() returns true if an instance is registered for an alias even with command loader');
         $this->assertEquals($foo, $application->get('foo:bar'), '->get() returns an instance by name even with command loader');
@@ -226,7 +226,7 @@ public function testSilentHelp()
         $application->setCatchExceptions(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('-h' => true, '-q' => true), array('decorated' => false));
+        $tester->run(['-h' => true, '-q' => true], ['decorated' => false]);
 
         $this->assertEmpty($tester->getDisplay(true));
     }
@@ -246,7 +246,7 @@ public function testGetNamespaces()
         $application = new Application();
         $application->add(new \FooCommand());
         $application->add(new \Foo1Command());
-        $this->assertEquals(array('foo'), $application->getNamespaces(), '->getNamespaces() returns an array of unique used namespaces');
+        $this->assertEquals(['foo'], $application->getNamespaces(), '->getNamespaces() returns an array of unique used namespaces');
     }
 
     public function testFindNamespace()
@@ -368,9 +368,9 @@ public function testFindCaseInsensitiveSuggestions()
     public function testFindWithCommandLoader()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar' => $f = function () { return new \FooCommand(); },
-        )));
+        ]));
 
         $this->assertInstanceOf('FooCommand', $application->find('foo:bar'), '->find() returns a command if its name exists');
         $this->assertInstanceOf('Symfony\Component\Console\Command\HelpCommand', $application->find('h'), '->find() returns a command if its name exists');
@@ -401,23 +401,23 @@ public function testFindWithAmbiguousAbbreviations($abbreviation, $expectedExcep
 
     public function provideAmbiguousAbbreviations()
     {
-        return array(
-            array('f', 'Command "f" is not defined.'),
-            array(
+        return [
+            ['f', 'Command "f" is not defined.'],
+            [
                 'a',
                 "Command \"a\" is ambiguous.\nDid you mean one of these?\n".
                 "    afoobar  The foo:bar command\n".
                 "    afoobar1 The foo:bar1 command\n".
                 '    afoobar2 The foo1:bar command',
-            ),
-            array(
+            ],
+            [
                 'foo:b',
                 "Command \"foo:b\" is ambiguous.\nDid you mean one of these?\n".
                 "    foo:bar  The foo:bar command\n".
                 "    foo:bar1 The foo:bar1 command\n".
                 '    foo1:bar The foo1:bar command',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testFindCommandEqualNamespace()
@@ -465,7 +465,7 @@ public function testDontRunAlternativeNamespaceName()
         $application->add(new \Foo1Command());
         $application->setAutoExit(false);
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foos:bar1'), array('decorated' => false));
+        $tester->run(['command' => 'foos:bar1'], ['decorated' => false]);
         $this->assertSame('
                                                           
   There are no commands defined in the "foos" namespace.  
@@ -483,8 +483,8 @@ public function testCanRunAlternativeCommandName()
         $application->add(new \FooWithoutAliasCommand());
         $application->setAutoExit(false);
         $tester = new ApplicationTester($application);
-        $tester->setInputs(array('y'));
-        $tester->run(array('command' => 'foos'), array('decorated' => false));
+        $tester->setInputs(['y']);
+        $tester->run(['command' => 'foos'], ['decorated' => false]);
         $display = trim($tester->getDisplay(true));
         $this->assertContains('Command "foos" is not defined', $display);
         $this->assertContains('Do you want to run "foo" instead?  (yes/no) [no]:', $display);
@@ -497,8 +497,8 @@ public function testDontRunAlternativeCommandName()
         $application->add(new \FooWithoutAliasCommand());
         $application->setAutoExit(false);
         $tester = new ApplicationTester($application);
-        $tester->setInputs(array('n'));
-        $exitCode = $tester->run(array('command' => 'foos'), array('decorated' => false));
+        $tester->setInputs(['n']);
+        $exitCode = $tester->run(['command' => 'foos'], ['decorated' => false]);
         $this->assertSame(1, $exitCode);
         $display = trim($tester->getDisplay(true));
         $this->assertContains('Command "foos" is not defined', $display);
@@ -507,10 +507,10 @@ public fun
10000
ction testDontRunAlternativeCommandName()
 
     public function provideInvalidCommandNamesSingle()
     {
-        return array(
-            array('foo3:barr'),
-            array('fooo3:bar'),
-        );
+        return [
+            ['foo3:barr'],
+            ['fooo3:bar'],
+        ];
     }
 
     public function testFindAlternativeExceptionMessageMultiple()
@@ -568,7 +568,7 @@ public function testFindAlternativeCommands()
             $this->fail('->find() throws a CommandNotFoundException if command does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if command does not exist');
-            $this->assertSame(array(), $e->getAlternatives());
+            $this->assertSame([], $e->getAlternatives());
             $this->assertEquals(sprintf('Command "%s" is not defined.', $commandName), $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, without alternatives');
         }
 
@@ -579,7 +579,7 @@ public function testFindAlternativeCommands()
             $this->fail('->find() throws a CommandNotFoundException if command does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if command does not exist');
-            $this->assertSame(array('afoobar1', 'foo:bar1'), $e->getAlternatives());
+            $this->assertSame(['afoobar1', 'foo:bar1'], $e->getAlternatives());
             $this->assertRegExp(sprintf('/Command "%s" is not defined./', $commandName), $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternatives');
             $this->assertRegExp('/afoobar1/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternative : "afoobar1"');
             $this->assertRegExp('/foo:bar1/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternative : "foo:bar1"');
@@ -590,7 +590,7 @@ public function testFindAlternativeCommands()
     public function testFindAlternativeCommandsWithAnAlias()
     {
         $fooCommand = new \FooCommand();
-        $fooCommand->setAliases(array('foo2'));
+        $fooCommand->setAliases(['foo2']);
 
         $application = new Application();
         $application->add($fooCommand);
@@ -614,7 +614,7 @@ public function testFindAlternativeNamespace()
             $this->fail('->find() throws a CommandNotFoundException if namespace does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if namespace does not exist');
-            $this->assertSame(array(), $e->getAlternatives());
+            $this->assertSame([], $e->getAlternatives());
             $this->assertEquals('There are no commands defined in the "Unknown-namespace" namespace.', $e->getMessage(), '->find() throws a CommandNotFoundException if namespace does not exist, without alternatives');
         }
 
@@ -644,7 +644,7 @@ public function testFindAlternativesOutput()
         $application->add(new \Foo2Command());
         $application->add(new \Foo3Command());
 
-        $expectedAlternatives = array(
+        $expectedAlternatives = [
             'afoobar',
             'afoobar1',
             'afoobar2',
@@ -652,7 +652,7 @@ public function testFindAlternativesOutput()
             'foo3:bar',
             'foo:bar',
             'foo:bar1',
-        );
+        ];
 
         try {
             $application->find('foo');
@@ -667,10 +667,10 @@ public function testFindAlternativesOutput()
 
     public function testFindNamespaceDoesNotFailOnDeepSimilarNamespaces()
     {
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('getNamespaces'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['getNamespaces'])->getMock();
         $application->expects($this->once())
             ->method('getNamespaces')
-            ->will($this->returnValue(array('foo:sublong', 'bar:sub')));
+            ->will($this->returnValue(['foo:sublong', 'bar:sub']));
 
         $this->assertEquals('foo:sublong', $application->findNamespace('f:sub'));
     }
@@ -697,16 +697,16 @@ public function testSetCatchExceptions()
         $application->setCatchExceptions(true);
         $this->assertTrue($application->areExceptionsCaught());
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getDisplay(true), '->setCatchExceptions() sets the catch exception flag');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getErrorOutput(true), '->setCatchExceptions() sets the catch exception flag');
         $this->assertSame('', $tester->getDisplay(true));
 
         $application->setCatchExceptions(false);
         try {
-            $tester->run(array('command' => 'foo'), array('decorated' => false));
+            $tester->run(['command' => 'foo'], ['decorated' => false]);
             $this->fail('->setCatchExceptions() sets the catch exception flag');
         } catch (\Exception $e) {
             $this->assertInstanceOf('\Exception', $e, '->setCatchExceptions() sets the catch exception flag');
@@ -730,29 +730,29 @@ public function testRenderException()
         putenv('COLUMNS=120');
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exception');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE, 'capture_stderr_separately' => true]);
         $this->assertContains('Exception trace', $tester->getErrorOutput(), '->renderException() renders a pretty exception with a stack trace when verbosity is verbose');
 
-        $tester->run(array('command' => 'list', '--foo' => true), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'list', '--foo' => true], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception2.txt', $tester->getErrorOutput(true), '->renderException() renders the command synopsis when an exception occurs in the context of a command');
 
         $application->add(new \Foo3Command());
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE]);
         $this->assertRegExp('/\[Exception\]\s*First exception/', $tester->getDisplay(), '->renderException() renders a pretty exception without code exception when code exception is default and verbosity is verbose');
         $this->assertRegExp('/\[Exception\]\s*Second exception/', $tester->getDisplay(), '->renderException() renders a pretty exception without code exception when code exception is 0 and verbosity is verbose');
         $this->assertRegExp('/\[Exception \(404\)\]\s*Third exception/', $tester->getDisplay(), '->renderException() renders a pretty exception with code exception when code exception is 404 and verbosity is verbose');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3decorated.txt', $tester->getDisplay(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => true, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => true, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3decorated.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
         $application = new Application();
@@ -760,7 +760,7 @@ public function testRenderException()
         putenv('COLUMNS=32');
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false,  'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false,  'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception4.txt', $tester->getErrorOutput(true), '->renderException() wraps messages when they are bigger than the terminal');
         putenv('COLUMNS=120');
     }
@@ -775,10 +775,10 @@ public function testRenderExceptionWithDoubleWidthCharacters()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth1.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => true, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => true, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth1decorated.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
         $application = new Application();
@@ -788,7 +788,7 @@ public function testRenderExceptionWithDoubleWidthCharacters()
             throw new \Exception('コマンドの実行中にエラーが発生しました。');
         });
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth2.txt', $tester->getErrorOutput(true), '->renderException() wraps messages when they are bigger than the terminal');
         putenv('COLUMNS=120');
     }
@@ -803,14 +803,14 @@ public function testRenderExceptionEscapesLines()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_escapeslines.txt', $tester->getDisplay(true), '->renderException() escapes lines containing formatting');
         putenv('COLUMNS=120');
     }
 
     public function testRenderExceptionLineBreaks()
     {
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('getTerminalWidth'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['getTerminalWidth'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->any())
             ->method('getTerminalWidth')
@@ -820,7 +820,7 @@ public function testRenderExceptionLineBreaks()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_linebreaks.txt', $tester->getDisplay(true), '->renderException() keep multiple line breaks');
     }
 
@@ -833,7 +833,7 @@ public function testRenderExceptionStackTraceContainsRootException()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE]);
 
         $this->assertContains(sprintf('() at %s:', __FILE__), $tester->getDisplay());
     }
@@ -844,7 +844,7 @@ public function testRun()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
         $application->add($command = new \Foo1Command());
-        $_SERVER['argv'] = array('cli.php', 'foo:bar1');
+        $_SERVER['argv'] = ['cli.php', 'foo:bar1'];
 
         ob_start();
         $application->run();
@@ -860,63 +860,63 @@ public function testRun()
         $this->ensureStaticCommandHelp($application);
         $tester = new ApplicationTester($application);
 
-        $tester->run(array(), array('decorated' => false));
+        $tester->run([], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run1.txt', $tester->getDisplay(true), '->run() runs the list command if no argument is passed');
 
-        $tester->run(array('--help' => true), array('decorated' => false));
+        $tester->run(['--help' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run2.txt', $tester->getDisplay(true), '->run() runs the help command if --help is passed');
 
-        $tester->run(array('-h' => true), array('decorated' => false));
+        $tester->run(['-h' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run2.txt', $tester->getDisplay(true), '->run() runs the help command if -h is passed');
 
-        $tester->run(array('command' => 'list', '--help' => true), array('decorated' => false));
+        $tester->run(['command' => 'list', '--help' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run3.txt', $tester->getDisplay(true), '->run() displays the help if --help is passed');
 
-        $tester->run(array('command' => 'list', '-h' => true), array('decorated' => false));
+        $tester->run(['command' => 'list', '-h' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run3.txt', $tester->getDisplay(true), '->run() displays the help if -h is passed');
 
-        $tester->run(array('--ansi' => true));
+        $tester->run(['--ansi' => true]);
         $this->assertTrue($tester->getOutput()->isDecorated(), '->run() forces color output if --ansi is passed');
 
-        $tester->run(array('--no-ansi' => true));
+        $tester->run(['--no-ansi' => true]);
         $this->assertFalse($tester->getOutput()->isDecorated(), '->run() forces color output to be disabled if --no-ansi is passed');
 
-        $tester->run(array('--version' => true), array('decorated' => false));
+        $tester->run(['--version' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run4.txt', $tester->getDisplay(true), '->run() displays the program version if --version is passed');
 
-        $tester->run(array('-V' => true), array('decorated' => false));
+        $tester->run(['-V' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run4.txt', $tester->getDisplay(true), '->run() displays the program version if -v is passed');
 
-        $tester->run(array('command' => 'list', '--quiet' => true));
+        $tester->run(['command' => 'list', '--quiet' => true]);
         $this->assertSame('', $tester->getDisplay(), '->run() removes all output if --quiet is passed');
         $this->assertFalse($tester->getInput()->isInteractive(), '->run() sets off the interactive mode if --quiet is passed');
 
-        $tester->run(array('command' => 'list', '-q' => true));
+        $tester->run(['command' => 'list', '-q' => true]);
         $this->assertSame('', $tester->getDisplay(), '->run() removes all output if -q is passed');
         $this->assertFalse($tester->getInput()->isInteractive(), '->run() sets off the interactive mode if -q is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => true));
+        $tester->run(['command' => 'list', '--verbose' => true]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if --verbose is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 1));
+        $tester->run(['command' => 'list', '--verbose' => 1]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if --verbose=1 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 2));
+        $tester->run(['command' => 'list', '--verbose' => 2]);
         $this->assertSame(Output::VERBOSITY_VERY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to very verbose if --verbose=2 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 3));
+        $tester->run(['command' => 'list', '--verbose' => 3]);
         $this->assertSame(Output::VERBOSITY_DEBUG, $tester->getOutput()->getVerbosity(), '->run() sets the output to debug if --verbose=3 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 4));
+        $tester->run(['command' => 'list', '--verbose' => 4]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if unknown --verbose level is passed');
 
-        $tester->run(array('command' => 'list', '-v' => true));
+        $tester->run(['command' => 'list', '-v' => true]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
-        $tester->run(array('command' => 'list', '-vv' => true));
+        $tester->run(['command' => 'list', '-vv' => true]);
         $this->assertSame(Output::VERBOSITY_VERY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
-        $tester->run(array('command' => 'list', '-vvv' => true));
+        $tester->run(['command' => 'list', '-vvv' => true]);
         $this->assertSame(Output::VERBOSITY_DEBUG, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
         $application = new Application();
@@ -925,10 +925,10 @@ public function testRun()
         $application->add(new \FooCommand());
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo:bar', '--no-interaction' => true), array('decorated' => false));
+        $tester->run(['command' => 'foo:bar', '--no-interaction' => true], ['decorated' => false]);
         $this->assertSame('called'.PHP_EOL, $tester->getDisplay(), '->run() does not call interact() if --no-interaction is passed');
 
-        $tester->run(array('command' => 'foo:bar', '-n' => true), array('decorated' => false));
+        $tester->run(['command' => 'foo:bar', '-n' => true], ['decorated' => false]);
         $this->assertSame('called'.PHP_EOL, $tester->getDisplay(), '->run() does not call interact() if -n is passed');
     }
 
@@ -948,12 +948,12 @@ public function testVerboseValueNotBreakArguments()
 
         $output = new StreamOutput(fopen('php://memory', 'w', false));
 
-        $input = new ArgvInput(array('cli.php', '-v', 'foo:bar'));
+        $input = new ArgvInput(['cli.php', '-v', 'foo:bar']);
         $application->run($input, $output);
 
         $this->addToAssertionCount(1);
 
-        $input = new ArgvInput(array('cli.php', '--verbose', 'foo:bar'));
+        $input = new ArgvInput(['cli.php', '--verbose', 'foo:bar']);
         $application->run($input, $output);
 
         $this->addToAssertionCount(1);
@@ -963,13 +963,13 @@ public function testRunReturnsIntegerExitCode()
     {
         $exception = new \Exception('', 4);
 
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('doRun'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['doRun'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->once())
             ->method('doRun')
             ->willThrowException($exception);
 
-        $exitCode = $application->run(new ArrayInput(array()), new NullOutput());
+        $exitCode = $application->run(new ArrayInput([]), new NullOutput());
 
         $this->assertSame(4, $exitCode, '->run() returns integer exit code extracted from raised exception');
     }
@@ -993,7 +993,7 @@ public function testRunDispatchesIntegerExitCode()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'test'));
+        $tester->run(['command' => 'test']);
 
         $this->assertTrue($passedRightValue, '-> exit code 4 was passed in the console.terminate event');
     }
@@ -1002,13 +1002,13 @@ public function testRunReturnsExitCodeOneForExceptionCodeZero()
     {
         $exception = new \Exception('', 0);
 
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('doRun'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['doRun'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->once())
             ->method('doRun')
             ->willThrowException($exception);
 
-        $exitCode = $application->run(new ArrayInput(array()), new NullOutput());
+        $exitCode = $application->run(new ArrayInput([]), new NullOutput());
 
         $this->assertSame(1, $exitCode, '->run() returns exit code 1 when exception code is 0');
     }
@@ -1032,7 +1032,7 @@ public function testRunDispatchesExitCodeOneForExceptionCodeZero()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'test'));
+        $tester->run(['command' => 'test']);
 
         $this->assertTrue($passedRightValue, '-> exit code 1 was passed in the console.terminate event');
     }
@@ -1053,12 +1053,12 @@ public function testAddingOptionWithDuplicateShortcut()
 
         $application
             ->register('foo')
-            ->setAliases(array('f'))
-            ->setDefinition(array(new InputOption('survey', 'e', InputOption::VALUE_REQUIRED, 'My option with a shortcut.')))
+            ->setAliases(['f'])
+            ->setDefinition([new InputOption('survey', 'e', InputOption::VALUE_REQUIRED, 'My option with a shortcut.')])
             ->setCode(function (InputInterface $input, OutputInterface $output) {})
         ;
 
-        $input = new ArrayInput(array('command' => 'foo'));
+        $input = new ArrayInput(['command' => 'foo']);
         $output = new NullOutput();
 
         $application->run($input, $output);
@@ -1075,22 +1075,22 @@ public function testAddingAlreadySetDefinitionElementData($def)
         $application->setCatchExceptions(false);
         $application
             ->register('foo')
-            ->setDefinition(array($def))
+            ->setDefinition([$def])
             ->setCode(function (InputInterface $input, OutputInterface $output) {})
         ;
 
-        $input = new ArrayInput(array('command' => 'foo'));
+        $input = new ArrayInput(['command' => 'foo']);
         $output = new NullOutput();
         $application->run($input, $output);
     }
 
     public function getAddingAlreadySetDefinitionElementData()
     {
-        return array(
-            array(new InputArgument('command', InputArgument::REQUIRED)),
-            array(new InputOption('quiet', '', InputOption::VALUE_NONE)),
-            array(new InputOption('query', 'q', InputOption::VALUE_NONE)),
-        );
+        return [
+            [new InputArgument('command', InputArgument::REQUIRED)],
+            [new InputOption('quiet', '', InputOption::VALUE_NONE)],
+            [new InputOption('query', 'q', InputOption::VALUE_NONE)],
+        ];
     }
 
     public function testGetDefaultHelperSetReturnsDefaultValues()
@@ -1110,7 +1110,7 @@ public function testAddingSingleHelperSetOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $application->setHelperSet(new HelperSet([new FormatterHelper()]));
 
         $helperSet = $application->getHelperSet();
 
@@ -1127,7 +1127,7 @@ public function testOverwritingDefaultHelperSetOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $application->setHelperSet(new HelperSet([new FormatterHelper()]));
 
         $helperSet = $application->getHelperSet();
 
@@ -1185,7 +1185,7 @@ public function testSettingCustomInputDefinitionOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setDefinition(new InputDefinition(array(new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.'))));
+        $application->setDefinition(new InputDefinition([new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')]));
 
         $inputDefinition = $application->getDefinition();
 
@@ -1214,7 +1214,7 @@ public function testRunWithDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertEquals('before.foo.after.'.PHP_EOL, $tester->getDisplay());
     }
 
@@ -1234,7 +1234,7 @@ public function testRunWithExceptionAndDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
     }
 
     public function testRunDispatchesAllEventsWithException()
@@ -1250,7 +1250,7 @@ public function testRunDispatchesAllEventsWithException()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.foo.error.after.', $tester->getDisplay());
     }
 
@@ -1270,7 +1270,7 @@ public function testRunDispatchesAllEventsWithExceptionInListener()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.error.after.', $tester->getDisplay());
     }
 
@@ -1289,7 +1289,7 @@ public function testRunWithError()
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('Error expected.');
         } catch (\Error $e) {
             $this->assertSame('dymerr', $e->getMessage());
@@ -1318,7 +1318,7 @@ public function testRunAllowsErrorListenersToSilenceTheException()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.error.silenced.after.', $tester->getDisplay());
         $this->assertEquals(ConsoleCommandEvent::RETURN_CODE_DISABLED, $tester->getStatusCode());
     }
@@ -1337,7 +1337,7 @@ public function testConsoleErrorEventIsTriggeredOnCommandNotFound()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'unknown'));
+        $tester->run(['command' => 'unknown']);
         $this->assertContains('silenced command not found', $tester->getDisplay());
         $this->assertEquals(1, $tester->getStatusCode());
     }
@@ -1356,7 +1356,7 @@ public function testErrorIsRethrownIfNotHandledByConsoleErrorEvent()
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('->run() should rethrow PHP errors if not handled via ConsoleErrorEvent.');
         } catch (\Error $e) {
             $this->assertSame($e->getMessage(), 'Class \'UnknownClass\' not found');
@@ -1381,7 +1381,7 @@ public function testRunWithErrorAndDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dym'));
+        $tester->run(['command' => 'dym']);
         $this->assertContains('before.dym.error.after.', $tester->getDisplay(), 'The PHP Error did not dispached events');
     }
 
@@ -1398,7 +1398,7 @@ public function testRunDispatchesAllEventsWithError()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dym'));
+        $tester->run(['command' => 'dym']);
         $this->assertContains('before.dym.error.after.', $tester->getDisplay(), 'The PHP Error did not dispached events');
     }
 
@@ -1415,7 +1415,7 @@ public function testRunWithErrorFailingStatusCode()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dus'));
+        $tester->run(['command' => 'dus']);
         $this->assertSame(1, $tester->getStatusCode(), 'Status code should be 1');
     }
 
@@ -1430,7 +1430,7 @@ public function testRunWithDispatcherSkippingCommand()
         });
 
         $tester = new ApplicationTester($application);
-        $exitCode = $tester->run(array('command' => 'foo'));
+        $exitCode = $tester->run(['command' => 'foo']);
         $this->assertContains('before.after.', $tester->getDisplay());
         $this->assertEquals(ConsoleCommandEvent::RETURN_CODE_DISABLED, $exitCode);
     }
@@ -1457,7 +1457,7 @@ public function testRunWithDispatcherAccessingInputOptions()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo', '--no-interaction' => true));
+        $tester->run(['command' => 'foo', '--no-interaction' => true]);
 
         $this->assertTrue($noInteractionValue);
         $this->assertFalse($quietValue);
@@ -1487,7 +1487,7 @@ public function testRunWithDispatcherAddingInputOptions()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo', '--extra' => 'some test value'));
+        $tester->run(['command' => 'foo', '--extra' => 'some test value']);
 
         $this->assertEquals('some test value', $extraValue);
     }
@@ -1502,14 +1502,14 @@ public function testSetRunCustomDefaultCommand()
         $application->setDefaultCommand($command->getName());
 
         $tester = new ApplicationTester($application);
-        $tester->run(array(), array('interactive' => false));
+        $tester->run([], ['interactive' => false]);
         $this->assertEquals('called'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
 
         $application = new CustomDefaultCommandApplication();
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array(), array('interactive' => false));
+        $tester->run([], ['interactive' => false]);
 
         $this->assertEquals('called'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
     }
@@ -1524,7 +1524,7 @@ public function testSetRunCustomDefaultCommandWithOption()
         $application->setDefaultCommand($command->getName());
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('--fooopt' => 'opt'), array('interactive' => false));
+        $tester->run(['--fooopt' => 'opt'], ['interactive' => false]);
 
         $this->assertEquals('called'.PHP_EOL.'opt'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
     }
@@ -1540,10 +1540,10 @@ public function testSetRunCustomSingleCommand()
 
         $tester = new ApplicationTester($application);
 
-        $tester->run(array());
+        $tester->run([]);
         $this->assertContains('called', $tester->getDisplay());
 
-        $tester->run(array('--help' => true));
+        $tester->run(['--help' => true]);
         $this->assertContains('The foo:bar command', $tester->getDisplay());
     }
 
@@ -1556,9 +1556,9 @@ public function testCanCheckIfTerminalIsInteractive()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'help'));
+        $tester->run(['command' => 'help']);
 
-        $this->assertFalse($tester->getInput()->hasParameterOption(array('--no-interaction', '-n')));
+        $this->assertFalse($tester->getInput()->hasParameterOption(['--no-interaction', '-n']));
 
         $inputStream = $tester->getInput()->getStream();
         $this->assertEquals($tester->getInput()->isInteractive(), @posix_isatty($inputStream));
@@ -1570,9 +1570,9 @@ public function testRunLazyCommandService()
         $container->addCompilerPass(new AddConsoleCommandPass());
         $container
             ->register('lazy-command', LazyCommand::class)
-            ->addTag('console.command', array('command' => 'lazy:command'))
-            ->addTag('console.command', array('command' => 'lazy:alias'))
-            ->addTag('console.command', array('command' => 'lazy:alias2'));
+            ->addTag('console.command', ['command' => 'lazy:command'])
+            ->addTag('console.command', ['command' => 'lazy:alias'])
+            ->addTag('console.command', ['command' => 'lazy:alias2']);
         $container->compile();
 
         $application = new Application();
@@ -1581,17 +1581,17 @@ public function testRunLazyCommandService()
 
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'lazy:command'));
+        $tester->run(['command' => 'lazy:command']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
-        $tester->run(array('command' => 'lazy:alias'));
+        $tester->run(['command' => 'lazy:alias']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
-        $tester->run(array('command' => 'lazy:alias2'));
+        $tester->run(['command' => 'lazy:alias2']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
         $command = $application->get('lazy:command');
-        $this->assertSame(array('lazy:alias', 'lazy:alias2'), $command->getAliases());
+        $this->assertSame(['lazy:alias', 'lazy:alias2'], $command->getAliases());
     }
 
     /**
@@ -1600,21 +1600,21 @@ public function testRunLazyCommandService()
     public function testGetDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $application->get('disabled');
     }
 
     public function testHasReturnsFalseForDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $this->assertFalse($application->has('disabled'));
     }
 
     public function testAllExcludesDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $this->assertArrayNotHasKey('disabled', $application->all());
     }
 
@@ -1657,7 +1657,7 @@ public function testErrorIsRethrownIfNotHandledByConsoleErrorEventWithCatchingEn
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('->run() should rethrow PHP errors if not handled via ConsoleErrorEvent.');
         } catch (\Error $e) {
             $this->assertSame($e->getMessage(), 'Class \'UnknownClass\' not found');
@@ -1689,7 +1689,7 @@ public function testThrowingErrorListener()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
     }
 
     protected function tearDown()
@@ -1709,7 +1709,7 @@ class CustomApplication extends Application
      */
     protected function getDefaultInputDefinition()
     {
-        return new InputDefinition(array(new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')));
+        return new InputDefinition([new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')]);
     }
 
     /**
@@ -1719,7 +1719,7 @@ protected function getDefaultInputDefinition()
      */
     protected function getDefaultHelperSet()
     {
-        return new HelperSet(array(new FormatterHelper()));
+        return new HelperSet([new FormatterHelper()]);
     }
 }
 
diff --git a/src/Symfony/Component/Console/Tests/DependencyInjection/AddConsoleCommandPassTest.php b/src/Symfony/Component/Console/Tests/DependencyInjection/AddConsoleCommandPassTest.php
index af3e66ec597a..a0b66bc178c1 100644
--- a/src/Symfony/Component/Console/Tests/DependencyInjection/AddConsoleCommandPassTest.php
+++ b/src/Symfony/Component/Console/Tests/DependencyInjection/AddConsoleCommandPassTest.php
@@ -53,7 +53,7 @@ public function testProcess($public)
         }
 
         $this->assertTrue($container->hasParameter('console.command.ids'));
-        $this->assertSame(array($public ? $id : $alias), $container->getParameter('console.command.ids'));
+        $this->assertSame([$public ? $id : $alias], $container->getParameter('console.command.ids'));
     }
 
     public function testProcessRegistersLazyCommands()
@@ -62,8 +62,8 @@ public function testProcessRegistersLazyCommands()
         $command = $container
             ->register('my-command', MyCommand::class)
             ->setPublic(false)
-            ->addTag('console.command', array('command' => 'my:command'))
-            ->addTag('console.command', array('command' => 'my:alias'))
+            ->addTag('console.command', ['command' => 'my:command'])
+            ->addTag('console.command', ['command' => 'my:alias'])
         ;
 
         (new AddConsoleCommandPass())->process($container);
@@ -72,10 +72,10 @@ public function testProcessRegistersLazyCommands()
         $commandLocator = $container->getDefinition((string) $commandLoader->getArgument(0));
 
         $this->assertSame(ContainerCommandLoader::class, $commandLoader->getClass());
-        $this->assertSame(array('my:command' => 'my-command', 'my:alias' => 'my-command'), $commandLoader->getArgument(1));
-        $this->assertEquals(array(array('my-command' => new ServiceClosureArgument(new TypedReference('my-command', MyCommand::class)))), $commandLocator->getArguments());
-        $this->assertSame(array(), $container->getParameter('console.command.ids'));
-        $this->assertSame(array(array('setName', array('my:command')), array('setAliases', array(array('my:alias')))), $command->getMethodCalls());
+        $this->assertSame(['my:command' => 'my-command', 'my:alias' => 'my-command'], $commandLoader->getArgument(1));
+        $this->assertEquals([['my-command' => new ServiceClosureArgument(new TypedReference('my-command', MyCommand::class))]], $commandLocator->getArguments());
+        $this->assertSame([], $container->getParameter('console.command.ids'));
+        $this->assertSame([['setName', ['my:command']], ['setAliases', [['my:alias']]]], $command->getMethodCalls());
     }
 
     public function testProcessFallsBackToDefaultName()
@@ -94,28 +94,28 @@ public function testProcessFallsBackToDefaultName()
         $commandLocator = $container->getDefinition((string) $commandLoader->getArgument(0));
 
         $this->assertSame(ContainerCommandLoader::class, $commandLoader->getClass());
-        $this->assertSame(array('default' => 'with-default-name'), $commandLoader->getArgument(1));
-        $this->assertEquals(array(array('with-default-name' => new ServiceClosureArgument(new TypedReference('with-default-name', NamedCommand::class)))), $commandLocator->getArguments());
-        $this->assertSame(array(), $container->getParameter('console.command.ids'));
+        $this->assertSame(['default' => 'with-default-name'], $commandLoader->getArgument(1));
+        $this->assertEquals([['with-default-name' => new ServiceClosureArgument(new TypedReference('with-default-name', NamedCommand::class))]], $commandLocator->getArguments());
+        $this->assertSame([], $container->getParameter('console.command.ids'));
 
         $container = new ContainerBuilder();
         $container
             ->register('with-default-name', NamedCommand::class)
             ->setPublic(false)
-            ->addTag('console.command', array('command' => 'new-name'))
+            ->addTag('console.command', ['command' => 'new-name'])
         ;
 
         $pass->process($container);
 
-        $this->assertSame(array('new-name' => 'with-default-name'), $container->getDefinition('console.command_loader')->getArgument(1));
+        $this->assertSame(['new-name' => 'with-default-name'], $container->getDefinition('console.command_loader')->getArgument(1));
     }
 
     public function visibilityProvider()
     {
-        return array(
-            array(true),
-            array(false),
-        );
+        return [
+            [true],
+            [false],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_4_with_iterators.php b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_4_with_iterators.php
index a644fb416e20..3b215c7f2c5a 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_4_with_iterators.php
+++ b/src/Symfony/Component/Console/Tests/Fixtures/Style/SymfonyStyle/command/command_4_with_iterators.php
@@ -20,12 +20,12 @@
 
     //Ensure edge case by appending empty strings to history:
     $output->write('Lorem ipsum dolor sit amet');
-    $output->write(new \ArrayIterator(array('', '', '')));
+    $output->write(new \ArrayIterator(['', '', '']));
     $output->title('Fourth title');
 
     //Ensure have manual control over number of blank lines:
     $output->writeln('Lorem ipsum dolor sit amet');
-    $output->writeln(new \ArrayIterator(array('', ''))); //Should append an extra blank line
+    $output->writeln(new \ArrayIterator(['', ''])); //Should append an extra blank line
     $output->title('Fifth title');
 
     $output->writeln('Lorem ipsum dolor sit amet');
diff --git a/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php b/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
index 249aece61c01..d4aa3e9f367c 100644
--- a/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/ProgressBarTest.php
@@ -314,7 +314,7 @@ public function testOverwriteWithShorterLine()
 
     public function testOverwriteWithSectionOutput()
     {
-        $sections = array();
+        $sections = [];
         $stream = $this->getOutputStream(true);
         $output = new ConsoleSectionOutput($stream->getStream(), $sections, $stream->getVerbosity(), $stream->isDecorated(), new OutputFormatter());
 
@@ -336,7 +336,7 @@ public function testOverwriteWithSectionOutput()
 
     public function testOverwriteMultipleProgressBarsWithSectionOutputs()
     {
-        $sections = array();
+        $sections = [];
         $stream = $this->getOutputStream(true);
         $output1 = new ConsoleSectionOutput($stream->getStream(), $sections, $stream->getVerbosity(), $stream->isDecorated(), new OutputFormatter());
         $output2 = new ConsoleSectionOutput($stream->getStream(), $sections, $stream->getVerbosity(), $stream->isDecorated(), new OutputFormatter());
@@ -365,7 +365,7 @@ public function testOverwriteMultipleProgressBarsWithSectionOutputs()
 
     public function testMultipleSectionsWithCustomFormat()
     {
-        $sections = array();
+        $sections = [];
         $stream = $this->getOutputStream(true);
         $output1 = new ConsoleSectionOutput($stream->getStream(), $sections, $stream->getVerbosity(), $stream->isDecorated(), new OutputFormatter());
         $output2 = new ConsoleSectionOutput($stream->getStream(), $sections, $stream->getVerbosity(), $stream->isDecorated(), new OutputFormatter());
diff --git a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
index 3cb9a0996881..de3ec4559be4 100644
--- a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
@@ -29,10 +29,10 @@ public function testAskChoice()
     {
         $questionHelper = new QuestionHelper();
 
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $questionHelper->setHelperSet($helperSet);
 
-        $heroes = array('Superman', 'Batman', 'Spiderman');
+        $heroes = ['Superman', 'Batman', 'Spiderman'];
 
         $inputStream = $this->getInputStream("\n1\n  1  \nFabien\n1\nFabien\n1\n0,2\n 0 , 2  \n\n\n");
 
@@ -68,21 +68,21 @@ public function testAskChoice()
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
-        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
-        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Spiderman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Spiderman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '0,1');
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, ' 0 , 1 ');
         $question->setMaxAttempts(1);
         $question->setMultiselect(true);
 
-        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+        $this->assertEquals(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, 0);
         // We are supposed to get the default value since we are not in interactive mode
@@ -93,11 +93,11 @@ public function testAskChoiceNonInteractive()
     {
         $questionHelper = new QuestionHelper();
 
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $questionHelper->setHelperSet($helperSet);
         $inputStream = $this->getInputStream("\n1\n  1  \nFabien\n1\nFabien\n1\n0,2\n 0 , 2  \n\n\n");
 
-        $heroes = array('Superman', 'Batman', 'Spiderman');
+        $heroes = ['Superman', 'Batman', 'Spiderman'];
 
         $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '0');
 
@@ -122,16 +122,16 @@ public function testAskChoiceNonInteractive()
 
         $question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, '0, 1');
         $question->setMultiselect(true);
-        $this->assertSame(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
+        $this->assertSame(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, '0, 1');
         $question->setMultiselect(true);
         $question->setValidator(null);
-        $this->assertSame(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
+        $this->assertSame(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, '0, Batman');
         $question->setMultiselect(true);
-        $this->assertSame(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
+        $this->assertSame(['Superman', 'Batman'], $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
 
         $question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, null);
         $question->setMultiselect(true);
@@ -179,11 +179,11 @@ public function testAskWithAutocomplete()
         $inputStream = $this->getInputStream("Acm\nAc\177\177s\tTest\n\n\033[A\033[A\n\033[A\033[A\033[A\033[A\033[A\tTest\n\033[B\nS\177\177\033[B\033[B\nF00\177\177oo\t\n");
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new Question('Please select a bundle', 'FrameworkBundle');
-        $question->setAutocompleterValues(array('AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle'));
+        $question->setAutocompleterValues(['AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle']);
 
         $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
         $this->assertEquals('AsseticBundleTest', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
@@ -205,9 +205,9 @@ public function testAskWithAutocompleteWithNonSequentialKeys()
         $inputStream = $this->getInputStream("\033[A\033[A\n\033[B\033[B\n");
 
         $dialog = new QuestionHelper();
-        $dialog->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $dialog->setHelperSet(new HelperSet([new FormatterHelper()]));
 
-        $question = new ChoiceQuestion('Please select a bundle', array(1 => 'AcmeDemoBundle', 4 => 'AsseticBundle'));
+        $question = new ChoiceQuestion('Please select a bundle', [1 => 'AcmeDemoBundle', 4 => 'AsseticBundle']);
         $question->setMaxAttempts(1);
 
         $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
@@ -222,14 +222,14 @@ public function testAskWithAutocompleteWithExactMatch()
 
         $inputStream = $this->getInputStream("b\n");
 
-        $possibleChoices = array(
+        $possibleChoices = [
             'a' => 'berlin',
             'b' => 'copenhagen',
             'c' => 'amsterdam',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $dialog->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $dialog->setHelperSet(new HelperSet([new FormatterHelper()]));
 
         $question = new ChoiceQuestion('Please select a city', $possibleChoices);
         $question->setMaxAttempts(1);
@@ -246,12 +246,12 @@ public function testAutocompleteWithTrailingBackslash()
         $inputStream = $this->getInputStream('E');
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new Question('');
         $expectedCompletion = 'ExampleNamespace\\';
-        $question->setAutocompleterValues(array($expectedCompletion));
+        $question->setAutocompleterValues([$expectedCompletion]);
 
         $output = $this->createOutputInterface();
         $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $output, $question);
@@ -262,11 +262,11 @@ public function testAutocompleteWithTrailingBackslash()
 
         // Shell control (esc) sequences are not so important: we only care that
         // <hl> tag is interpreted correctly and replaced
-        $irrelevantEscSequences = array(
+        $irrelevantEscSequences = [
             "\0337" => '', // Save cursor position
             "\0338" => '', // Restore cursor position
             "\033[K" => '', // Clear line from cursor till the end
-        );
+        ];
 
         $importantActualOutput = strtr($actualOutput, $irrelevantEscSequences);
 
@@ -304,14 +304,14 @@ public function testAskConfirmation($question, $expected, $default = true)
 
     public function getAskConfirmationData()
     {
-        return array(
-            array('', true),
-            array('', false, false),
-            array('y', true),
-            array('yes', true),
-            array('n', false),
-            array('no', false),
-        );
+        return [
+            ['', true],
+            ['', false, false],
+            ['y', true],
+            ['yes', true],
+            ['n', false],
+            ['no', false],
+        ];
     }
 
     public function testAskConfirmationWithCustomTrueAnswer()
@@ -328,12 +328,12 @@ public function testAskConfirmationWithCustomTrueAnswer()
     public function testAskAndValidate()
     {
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $error = 'This is not a color!';
         $validator = function ($color) use ($error) {
-            if (!\in_array($color, array('white', 'black'))) {
+            if (!\in_array($color, ['white', 'black'])) {
                 throw new \InvalidArgumentException($error);
             }
 
@@ -361,14 +361,14 @@ public function testAskAndValidate()
      */
     public function testSelectChoiceFromSimpleChoices($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'My environment 1',
             'My environment 2',
             'My environment 3',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -380,14 +380,14 @@ public function testSelectChoiceFromSimpleChoices($providedAnswer, $expectedValu
 
     public function simpleAnswerProvider()
     {
-        return array(
-            array(0, 'My environment 1'),
-            array(1, 'My environment 2'),
-            array(2, 'My environment 3'),
-            array('My environment 1', 'My environment 1'),
-            array('My environment 2', 'My environment 2'),
-            array('My environment 3', 'My environment 3'),
-        );
+        return [
+            [0, 'My environment 1'],
+            [1, 'My environment 2'],
+            [2, 'My environment 3'],
+            ['My environment 1', 'My environment 1'],
+            ['My environment 2', 'My environment 2'],
+            ['My environment 3', 'My environment 3'],
+        ];
     }
 
     /**
@@ -395,14 +395,14 @@ public function simpleAnswerProvider()
      */
     public function testSpecialCharacterChoiceFromMultipleChoiceList($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             '.',
             'src',
-        );
+        ];
 
         $dialog = new QuestionHelper();
         $inputStream = $this->getInputStream($providedAnswer."\n");
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the directory', $possibleChoices);
@@ -415,10 +415,10 @@ public function testSpecialCharacterChoiceFromMultipleChoiceList($providedAnswer
 
     public function specialCharacterInMultipleChoice()
     {
-        return array(
-            array('.', array('.')),
-            array('., src', array('.', 'src')),
-        );
+        return [
+            ['.', ['.']],
+            ['., src', ['.', 'src']],
+        ];
     }
 
     /**
@@ -426,15 +426,15 @@ public function specialCharacterInMultipleChoice()
      */
     public function testChoiceFromChoicelistWithMixedKeys($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             '0' => 'No environment',
             '1' => 'My environment 1',
             'env_2' => 'My environment 2',
             3 => 'My environment 3',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -446,14 +446,14 @@ public function testChoiceFromChoicelistWithMixedKeys($providedAnswer, $expected
 
     public function mixedKeysChoiceListAnswerProvider()
     {
-        return array(
-            array('0', '0'),
-            array('No environment', '0'),
-            array('1', '1'),
-            array('env_2', 'env_2'),
-            array(3, '3'),
-            array('My environment 1', '1'),
-        );
+        return [
+            ['0', '0'],
+            ['No environment', '0'],
+            ['1', '1'],
+            ['env_2', 'env_2'],
+            [3, '3'],
+            ['My environment 1', '1'],
+        ];
     }
 
     /**
@@ -461,14 +461,14 @@ public function mixedKeysChoiceListAnswerProvider()
      */
     public function testSelectChoiceFromChoiceList($providedAnswer, $expectedValue)
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'env_1' => 'My environment 1',
             'env_2' => 'My environment',
             'env_3' => 'My environment',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -484,14 +484,14 @@ public function testSelectChoiceFromChoiceList($providedAnswer, $expectedValue)
      */
     public function testAmbiguousChoiceFromChoicelist()
     {
-        $possibleChoices = array(
+        $possibleChoices = [
             'env_1' => 'My first environment',
             'env_2' => 'My environment',
             'env_3' => 'My environment',
-        );
+        ];
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
@@ -502,12 +502,12 @@ public function testAmbiguousChoiceFromChoicelist()
 
     public function answerProvider()
     {
-        return array(
-            array('env_1', 'env_1'),
-            array('env_2', 'env_2'),
-            array('env_3', 'env_3'),
-            array('My environment 1', 'env_1'),
-        );
+        return [
+            ['env_1', 'env_1'],
+            ['env_2', 'env_2'],
+            ['env_3', 'env_3'],
+            ['My environment 1', 'env_1'],
+        ];
     }
 
     public function testNoInteraction()
@@ -523,22 +523,22 @@ public function testNoInteraction()
     public function testChoiceOutputFormattingQuestionForUtf8Keys()
     {
         $question = 'Lorem ipsum?';
-        $possibleChoices = array(
+        $possibleChoices = [
             'foo' => 'foo',
             'żółw' => 'bar',
             'łabądź' => 'baz',
-        );
-        $outputShown = array(
+        ];
+        $outputShown = [
             $question,
             '  [<info>foo   </info>] foo',
             '  [<info>żółw  </info>] bar',
             '  [<info>łabądź</info>] baz',
-        );
+        ];
         $output = $this->getMockBuilder('\Symfony\Component\Console\Output\OutputInterface')->getMock();
         $output->method('getFormatter')->willReturn(new OutputFormatter());
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $output->expects($this->once())->method('writeln')->with($this->equalTo($outputShown));
@@ -581,7 +581,7 @@ public function testAskThrowsExceptionOnMissingInputWithValidator()
      */
     public function testEmptyChoices(
10000
)
     {
-        new ChoiceQuestion('Question', array(), 'irrelevant');
+        new ChoiceQuestion('Question', [], 'irrelevant');
     }
 
     public function testTraversableAutocomplete()
@@ -601,11 +601,11 @@ public function testTraversableAutocomplete()
         $inputStream = $this->getInputStream("Acm\nAc\177\177s\tTest\n\n\033[A\033[A\n\033[A\033[A\033[A\033[A\033[A\tTest\n\033[B\nS\177\177\033[B\033[B\nF00\177\177oo\t\n");
 
         $dialog = new QuestionHelper();
-        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $helperSet = new HelperSet([new FormatterHelper()]);
         $dialog->setHelperSet($helperSet);
 
         $question = new Question('Please select a bundle', 'FrameworkBundle');
-        $question->setAutocompleterValues(new AutocompleteValues(array('irrelevant' => 'AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle')));
+        $question->setAutocompleterValues(new AutocompleteValues(['irrelevant' => 'AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle']));
 
         $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
         $this->assertEquals('AsseticBundleTest', $dialog->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
diff --git a/src/Symfony/Component/Console/Tests/Helper/TableTest.php b/src/Symfony/Component/Console/Tests/Helper/TableTest.php
index 7a9a688adec0..d8ea53b185d3 100644
--- a/src/Symfony/Component/Console/Tests/Helper/TableTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/TableTest.php
@@ -87,16 +87,16 @@ public function testRenderAddRowsOneByOne($headers, $rows, $style, $expected, $d
 
     public function renderProvider()
     {
-        $books = array(
-            array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
-            array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'),
-            array('960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'),
-            array('80-902734-1-6', 'And Then There Were None', 'Agatha Christie'),
-        );
-
-        return array(
-            array(
-                array('ISBN', 'Title', 'Author'),
+        $books = [
+            ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
+            ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'],
+            ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
+            ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
+        ];
+
+        return [
+            [
+                ['ISBN', 'Title', 'Author'],
                 $books,
                 'default',
 <<<'TABLE'
@@ -110,9 +110,9 @@ public function renderProvider()
 +---------------+--------------------------+------------------+
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title', 'Author'),
+            ],
+            [
+                ['ISBN', 'Title', 'Author'],
                 $books,
                 'compact',
 <<<'TABLE'
@@ -123,9 +123,9 @@ public function renderProvider()
  80-902734-1-6 And Then There Were None Agatha Christie  
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title', 'Author'),
+            ],
+            [
+                ['ISBN', 'Title', 'Author'],
                 $books,
                 'borderless',
 <<<'TABLE'
@@ -139,9 +139,9 @@ public function renderProvider()
  =============== ========================== ================== 
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title', 'Author'),
+            ],
+            [
+                ['ISBN', 'Title', 'Author'],
                 $books,
                 'box',
                 <<<'TABLE'
@@ -155,16 +155,16 @@ public function renderProvider()
 └───────────────┴──────────────────────────┴──────────────────┘
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
-                    array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'),
+            ],
+            [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
+                    ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'],
                     new TableSeparator(),
-                    array('960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'),
-                    array('80-902734-1-6', 'And Then There Were None', 'Agatha Christie'),
-                ),
+                    ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
+                    ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
+                ],
                 'box-double',
                 <<<'TABLE'
 ╔═══════════════╤══════════════════════════╤══════════════════╗
@@ -178,15 +178,15 @@ public function renderProvider()
 ╚═══════════════╧══════════════════════════╧══════════════════╝
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title'),
-                array(
-                    array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
-                    array('9971-5-0210-0'),
-                    array('960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'),
-                    array('80-902734-1-6', 'And Then There Were None', 'Agatha Christie'),
-                ),
+            ],
+            [
+                ['ISBN', 'Title'],
+                [
+                    ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
+                    ['9971-5-0210-0'],
+                    ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
+                    ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+--------------------------+------------------+
@@ -199,15 +199,15 @@ public function renderProvider()
 +---------------+--------------------------+------------------+
 
 TABLE
-            ),
-            array(
-                array(),
-                array(
-                    array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
-                    array('9971-5-0210-0'),
-                    array('960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'),
-                    array('80-902734-1-6', 'And Then There Were None', 'Agatha Christie'),
-                ),
+            ],
+            [
+                [],
+                [
+                    ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
+                    ['9971-5-0210-0'],
+                    ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
+                    ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+--------------------------+------------------+
@@ -218,15 +218,15 @@ public function renderProvider()
 +---------------+--------------------------+------------------+
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('99921-58-10-7', "Divine\nComedy", 'Dante Alighieri'),
-                    array('9971-5-0210-2', "Harry Potter\nand the Chamber of Secrets", "Rowling\nJoanne K."),
-                    array('9971-5-0210-2', "Harry Potter\nand the Chamber of Secrets", "Rowling\nJoanne K."),
-                    array('960-425-059-0', 'The Lord of the Rings', "J. R. R.\nTolkien"),
-                ),
+            ],
+            [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['99921-58-10-7', "Divine\nComedy", 'Dante Alighieri'],
+                    ['9971-5-0210-2', "Harry Potter\nand the Chamber of Secrets", "Rowling\nJoanne K."],
+                    ['9971-5-0210-2', "Harry Potter\nand the Chamber of Secrets", "Rowling\nJoanne K."],
+                    ['960-425-059-0', 'The Lord of the Rings', "J. R. R.\nTolkien"],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+----------------------------+-----------------+
@@ -243,10 +243,10 @@ public function renderProvider()
 +---------------+----------------------------+-----------------+
 
 TABLE
-            ),
-            array(
-                array('ISBN', 'Title'),
-                array(),
+            ],
+            [
+                ['ISBN', 'Title'],
+                [],
                 'default',
 <<<'TABLE'
 +------+-------+
@@ -254,19 +254,19 @@ public function renderProvider()
 +------+-------+
 
 TABLE
-            ),
-            array(
-                array(),
-                array(),
+            ],
+            [
+                [],
+                [],
                 'default',
                 '',
-            ),
-            'Cell text with tags used for Output styling' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('<info>99921-58-10-7</info>', '<error>Divine Comedy</error>', '<fg=blue;bg=white>Dante Alighieri</fg=blue;bg=white>'),
-                    array('9971-5-0210-0', 'A Tale of Two Cities', '<info>Charles Dickens</>'),
-                ),
+            ],
+            'Cell text with tags used for Output styling' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['<info>99921-58-10-7</info>', '<error>Divine Comedy</error>', '<fg=blue;bg=white>Dante Alighieri</fg=blue;bg=white>'],
+                    ['9971-5-0210-0', 'A Tale of Two Cities', '<info>Charles Dickens</>'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+----------------------+-----------------+
@@ -277,13 +277,13 @@ public function renderProvider()
 +---------------+----------------------+-----------------+
 
 TABLE
-            ),
-            'Cell text with tags not used for Output styling' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('<strong>99921-58-10-700</strong>', '<f>Divine Com</f>', 'Dante Alighieri'),
-                    array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'),
-                ),
+            ],
+            'Cell text with tags not used for Output styling' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['<strong>99921-58-10-700</strong>', '<f>Divine Com</f>', 'Dante Alighieri'],
+                    ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'],
+                ],
                 'default',
 <<<'TABLE'
 +----------------------------------+----------------------+-----------------+
@@ -294,28 +294,28 @@ public function renderProvider()
 +----------------------------------+----------------------+-----------------+
 
 TABLE
-            ),
-            'Cell with colspan' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
+            ],
+            'Cell with colspan' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
                     new TableSeparator(),
-                    array(new TableCell('Divine Comedy(Dante Alighieri)', array('colspan' => 3))),
+                    [new TableCell('Divine Comedy(Dante Alighieri)', ['colspan' => 3])],
                     new TableSeparator(),
-                    array(
-                        new TableCell('Arduino: A Quick-Start Guide', array('colspan' => 2)),
+                    [
+                        new TableCell('Arduino: A Quick-Start Guide', ['colspan' => 2]),
                         'Mark Schmidt',
-                    ),
+                    ],
                     new TableSeparator(),
-                    array(
+                    [
                         '9971-5-0210-0',
-                        new TableCell("A Tale of \nTwo Cities", array('colspan' => 2)),
-                    ),
+                        new TableCell("A Tale of \nTwo Cities", ['colspan' => 2]),
+                    ],
                     new TableSeparator(),
-                    array(
-                        new TableCell('Cupiditate dicta atque porro, tempora exercitationem modi animi nulla nemo vel nihil!', array('colspan' => 3)),
-                    ),
-                ),
+                    [
+                        new TableCell('Cupiditate dicta atque porro, tempora exercitationem modi animi nulla nemo vel nihil!', ['colspan' => 3]),
+                    ],
+                ],
                 'default',
 <<<'TABLE'
 +-------------------------------+-------------------------------+-----------------------------+
@@ -334,21 +334,21 @@ public function renderProvider()
 +-------------------------------+-------------------------------+-----------------------------+
 
 TABLE
-            ),
-            'Cell with rowspan' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array(
-                        new TableCell('9971-5-0210-0', array('rowspan' => 3)),
-                        new TableCell('Divine Comedy', array('rowspan' => 2)),
+            ],
+            'Cell with rowspan' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    [
+                        new TableCell('9971-5-0210-0', ['rowspan' => 3]),
+                        new TableCell('Divine Comedy', ['rowspan' => 2]),
                         'Dante Alighieri',
-                    ),
-                    array(),
-                    array("The Lord of \nthe Rings", "J. R. \nR. Tolkien"),
+                    ],
+                    [],
+                    ["The Lord of \nthe Rings", "J. R. \nR. Tolkien"],
                     new TableSeparator(),
-                    array('80-902734-1-6', new TableCell("And Then \nThere \nWere None", array('rowspan' => 3)), 'Agatha Christie'),
-                    array('80-902734-1-7', 'Test'),
-                ),
+                    ['80-902734-1-6', new TableCell("And Then \nThere \nWere None", ['rowspan' => 3]), 'Agatha Christie'],
+                    ['80-902734-1-7', 'Test'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+---------------+-----------------+
@@ -365,23 +365,23 @@ public function renderProvider()
 +---------------+---------------+-----------------+
 
 TABLE
-            ),
-            'Cell with rowspan and colspan' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array(
-                        new TableCell('9971-5-0210-0', array('rowspan' => 2, 'colspan' => 2)),
+            ],
+            'Cell with rowspan and colspan' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    [
+                        new TableCell('9971-5-0210-0', ['rowspan' => 2, 'colspan' => 2]),
                         'Dante Alighieri',
-                    ),
-                    array('Charles Dickens'),
+                    ],
+                    ['Charles Dickens'],
                     new TableSeparator(),
-                    array(
+                    [
                         'Dante Alighieri',
-                        new TableCell('9971-5-0210-0', array('rowspan' => 3, 'colspan' => 2)),
-                    ),
-                    array('J. R. R. Tolkien'),
-                    array('J. R. R'),
-                ),
+                        new TableCell('9971-5-0210-0', ['rowspan' => 3, 'colspan' => 2]),
+                    ],
+                    ['J. R. R. Tolkien'],
+                    ['J. R. R'],
+                ],
                 'default',
 <<<'TABLE'
 +------------------+---------+-----------------+
@@ -396,27 +396,27 @@ public function renderProvider()
 +------------------+---------+-----------------+
 
 TABLE
-            ),
-            'Cell with rowspan and colspan contains new line break' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array(
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
+            ],
+            'Cell with rowspan and colspan contains new line break' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    [
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
                         'Dante Alighieri',
-                    ),
-                    array('Charles Dickens'),
+                    ],
+                    ['Charles Dickens'],
                     new TableSeparator(),
-                    array(
+                    [
                         'Dante Alighieri',
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
-                    ),
-                    array('Charles Dickens'),
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
+                    ],
+                    ['Charles Dickens'],
                     new TableSeparator(),
-                    array(
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
-                        new TableCell("Dante \nAlighieri", array('rowspan' => 2, 'colspan' => 1)),
-                    ),
-                ),
+                    [
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
+                        new TableCell("Dante \nAlighieri", ['rowspan' => 2, 'colspan' => 1]),
+                    ],
+                ],
                 'default',
 <<<'TABLE'
 +-----------------+-------+-----------------+
@@ -439,21 +439,21 @@ public function renderProvider()
 +-----------------+-------+-----------------+
 
 TABLE
-            ),
-            'Cell with rowspan and colspan without using TableSeparator' => array(
-                array('ISBN', 'Title', 'Author'),
-                array(
-                    array(
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
+            ],
+            'Cell with rowspan and colspan without using TableSeparator' => [
+                ['ISBN', 'Title', 'Author'],
+                [
+                    [
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
                         'Dante Alighieri',
-                    ),
-                    array('Charles Dickens'),
-                    array(
+                    ],
+                    ['Charles Dickens'],
+                    [
                         'Dante Alighieri',
-                        new TableCell("9971\n-5-\n021\n0-0", array('rowspan' => 2, 'colspan' => 2)),
-                    ),
-                    array('Charles Dickens'),
-                ),
+                        new TableCell("9971\n-5-\n021\n0-0", ['rowspan' => 2, 'colspan' => 2]),
+                    ],
+                    ['Charles Dickens'],
+                ],
                 'default',
 <<<'TABLE'
 +-----------------+-------+-----------------+
@@ -470,17 +470,17 @@ public function renderProvider()
 +-----------------+-------+-----------------+
 
 TABLE
-            ),
-            'Cell with rowspan and colspan with separator inside a rowspan' => array(
-                array('ISBN', 'Author'),
-                array(
-                    array(
-                        new TableCell('9971-5-0210-0', array('rowspan' => 3, 'colspan' => 1)),
+            ],
+            'Cell with rowspan and colspan with separator inside a rowspan' => [
+                ['ISBN', 'Author'],
+                [
+                    [
+                        new TableCell('9971-5-0210-0', ['rowspan' => 3, 'colspan' => 1]),
                         'Dante Alighieri',
-                    ),
-                    array(new TableSeparator()),
-                    array('Charles Dickens'),
-                ),
+                    ],
+                    [new TableSeparator()],
+                    ['Charles Dickens'],
+                ],
                 'default',
 <<<'TABLE'
 +---------------+-----------------+
@@ -492,13 +492,13 @@ public function renderProvider()
 +---------------+-----------------+
 
 TABLE
-            ),
-            'Multiple header lines' => array(
-                array(
-                    array(new TableCell('Main title', array('colspan' => 3))),
-                    array('ISBN', 'Title', 'Author'),
-                ),
-                array(),
+            ],
+            'Multiple header lines' => [
+                [
+                    [new TableCell('Main title', ['colspan' => 3])],
+                    ['ISBN', 'Title', 'Author'],
+                ],
+                [],
                 'default',
 <<<'TABLE'
 +------+-------+--------+
@@ -508,17 +508,17 @@ public function renderProvider()
 +------+-------+--------+
 
 TABLE
-            ),
-            'Row with multiple cells' => array(
-                array(),
-                array(
-                    array(
-                        new TableCell('1', array('colspan' => 3)),
-                        new TableCell('2', array('colspan' => 2)),
-                        new TableCell('3', array('colspan' => 2)),
-                        new TableCell('4', array('colspan' => 2)),
-                    ),
-        ),
+            ],
+            'Row with multiple cells' => [
+                [],
+                [
+                    [
+                        new TableCell('1', ['colspan' => 3]),
+                        new TableCell('2', ['colspan' => 2]),
+                        new TableCell('3', ['colspan' => 2]),
+                        new TableCell('4', ['colspan' => 2]),
+                    ],
+        ],
                 'default',
 <<<'TABLE'
 +---+--+--+---+--+---+--+---+--+
@@ -526,22 +526,22 @@ public function renderProvider()
 +---+--+--+---+--+---+--+---+--+
 
 TABLE
-            ),
-            'Coslpan and table cells with comment style' => array(
-                array(
-                    new TableCell('<comment>Long Title</comment>', array('colspan' => 3)),
-                ),
-                array(
-                    array(
-                        new TableCell('9971-5-0210-0', array('colspan' => 3)),
-                    ),
+            ],
+            'Coslpan and table cells with comment style' => [
+                [
+                    new TableCell('<comment>Long Title</comment>', ['colspan' => 3]),
+                ],
+                [
+                    [
+                        new TableCell('9971-5-0210-0', ['colspan' => 3]),
+                    ],
                     new TableSeparator(),
-                    array(
+                    [
                         'Dante Alighieri',
                         'J. R. R. Tolkien',
                         'J. R. R',
-                    ),
-                ),
+                    ],
+                ],
                 'default',
                 <<<TABLE
 +-----------------+------------------+---------+
@@ -555,22 +555,22 @@ public function renderProvider()
 TABLE
             ,
                 true,
-            ),
-            'Row with formatted cells containing a newline' => array(
-                array(),
-                array(
-                    array(
-                        new TableCell('<error>Dont break'."\n".'here</error>', array('colspan' => 2)),
-                    ),
+            ],
+            'Row with formatted cells containing a newline' => [
+                [],
+                [
+                    [
+                        new TableCell('<error>Dont break'."\n".'here</error>', ['colspan' => 2]),
+                    ],
                     new TableSeparator(),
-                    array(
+                    [
                         'foo',
-                         new TableCell('<error>Dont break'."\n".'here</error>', array('rowspan' => 2)),
-                    ),
-                    array(
+                         new TableCell('<error>Dont break'."\n".'here</error>', ['rowspan' => 2]),
+                    ],
+                    [
                         'bar',
-                    ),
-                ),
+                    ],
+                ],
                 'default',
                 <<<'TABLE'
 +-------+------------+
@@ -584,16 +584,16 @@ public function renderProvider()
 TABLE
             ,
                 true,
-            ),
-        );
+            ],
+        ];
     }
 
     public function testRenderMultiByte()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('■■'))
-            ->setRows(array(array(1234)))
+            ->setHeaders(['■■'])
+            ->setRows([[1234]])
             ->setStyle('default')
         ;
         $table->render();
@@ -615,7 +615,7 @@ public function testTableCellWithNumericIntValue()
     {
         $table = new Table($output = $this->getOutputStream());
 
-        $table->setRows(array(array(new TableCell(12345))));
+        $table->setRows([[new TableCell(12345)]]);
         $table->render();
 
         $expected =
@@ -633,7 +633,7 @@ public function testTableCellWithNumericFloatValue()
     {
         $table = new Table($output = $this->getOutputStream());
 
-        $table->setRows(array(array(new TableCell(12345.01))));
+        $table->setRows([[new TableCell(12345.01)]]);
         $table->render();
 
         $expected =
@@ -659,8 +659,8 @@ public function testStyle()
         Table::setStyleDefinition('dotfull', $style);
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('Foo'))
-            ->setRows(array(array('Bar')))
+            ->setHeaders(['Foo'])
+            ->setRows([['Bar']])
             ->setStyle('dotfull');
         $table->render();
 
@@ -681,14 +681,14 @@ public function testRowSeparator()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('Foo'))
-            ->setRows(array(
-                array('Bar1'),
+            ->setHeaders(['Foo'])
+            ->setRows([
+                ['Bar1'],
                 new TableSeparator(),
-                array('Bar2'),
+                ['Bar2'],
                 new TableSeparator(),
-                array('Bar3'),
-            ));
+                ['Bar3'],
+            ]);
         $table->render();
 
         $expected =
@@ -713,9 +713,9 @@ public function testRowSeparator()
     public function testRenderMultiCalls()
     {
         $table = new Table($output = $this->getOutputStream());
-        $table->setRows(array(
-            array(new TableCell('foo', array('colspan' => 2))),
-        ));
+        $table->setRows([
+            [new TableCell('foo', ['colspan' => 2])],
+        ]);
         $table->render();
         $table->render();
         $table->render();
@@ -741,11 +741,11 @@ public function testColumnStyle()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-                array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'),
-            ));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+                ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'],
+            ]);
 
         $style = new TableStyle();
         $style->setPadType(STR_PAD_LEFT);
@@ -775,10 +775,10 @@ public function testThrowsWhenTheCellInAnArray()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', array(), 'Dante Alighieri', '9.95'),
-            ));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', [], 'Dante Alighieri', '9.95'],
+            ]);
 
         $table->render();
     }
@@ -787,11 +787,11 @@ public function testColumnWidth()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-                array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'),
-            ))
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+                ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'],
+            ])
             ->setColumnWidth(0, 15)
             ->setColumnWidth(3, 10);
 
@@ -819,12 +819,12 @@ public function testColumnWidths()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-                array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'),
-            ))
-            ->setColumnWidths(array(15, 0, -1, 10));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+                ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'],
+            ])
+            ->setColumnWidths([15, 0, -1, 10]);
 
         $style = new TableStyle();
         $style->setPadType(STR_PAD_LEFT);
@@ -848,19 +848,19 @@ public function testColumnWidths()
 
     public function testSectionOutput()
     {
-        $sections = array();
+        $sections = [];
         $stream = $this->getOutputStream(true);
         $output = new ConsoleSectionOutput($stream->getStream(), $sections, $stream->getVerbosity(), $stream->isDecorated(), new OutputFormatter());
         $table = new Table($output);
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-            ));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+            ]);
 
         $table->render();
 
-        $table->appendRow(array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'));
+        $table->appendRow(['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25']);
 
         $expected =
             <<<TABLE
@@ -883,17 +883,17 @@ public function testSectionOutput()
 
     public function testSectionOutputDoesntClearIfTableIsntRendered()
     {
-        $sections = array();
+        $sections = [];
         $stream = $this->getOutputStream(true);
         $output = new ConsoleSectionOutput($stream->getStream(), $sections, $stream->getVerbosity(), $stream->isDecorated(), new OutputFormatter());
         $table = new Table($output);
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-            ));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+            ]);
 
-        $table->appendRow(array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'));
+        $table->appendRow(['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25']);
 
         $expected =
             <<<TABLE
@@ -911,19 +911,19 @@ public function testSectionOutputDoesntClearIfTableIsntRendered()
 
     public function testSectionOutputWithoutDecoration()
     {
-        $sections = array();
+        $sections = [];
         $stream = $this->getOutputStream();
         $output = new ConsoleSectionOutput($stream->getStream(), $sections, $stream->getVerbosity(), $stream->isDecorated(), new OutputFormatter());
         $table = new Table($output);
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author', 'Price'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'),
-            ));
+            ->setHeaders(['ISBN', 'Title', 'Author', 'Price'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri', '9.95'],
+            ]);
 
         $table->render();
 
-        $table->appendRow(array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'));
+        $table->appendRow(['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25']);
 
         $expected =
             <<<TABLE
@@ -952,7 +952,7 @@ public function testAppendRowWithoutSectionOutput()
     {
         $table = new Table($this->getOutputStream());
 
-        $table->appendRow(array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25'));
+        $table->appendRow(['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens', '139.25']);
     }
 
     /**
@@ -986,12 +986,12 @@ public function testBoxedStyleWithColspan()
         $table = new Table($output = $this->getOutputStream());
         $table->setStyle($boxed);
         $table
-            ->setHeaders(array('ISBN', 'Title', 'Author'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
+            ->setHeaders(['ISBN', 'Title', 'Author'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
                 new TableSeparator(),
-                array(new TableCell('This value spans 3 columns.', array('colspan' => 3))),
-            ))
+                [new TableCell('This value spans 3 columns.', ['colspan' => 3])],
+            ])
         ;
         $table->render();
 
diff --git a/src/Symfony/Component/Console/Tests/Input/InputArgumentTest.php b/src/Symfony/Component/Console/Tests/Input/InputArgumentTest.php
index 881300c2576f..8b809d6f1396 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputArgumentTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputArgumentTest.php
@@ -77,8 +77,8 @@ public function testSetDefault()
         $this->assertEquals('another', $argument->getDefault(), '->setDefault() changes the default value');
 
         $argument = new InputArgument('foo', InputArgument::OPTIONAL | InputArgument::IS_ARRAY);
-        $argument->setDefault(array(1, 2));
-        $this->assertEquals(array(1, 2), $argument->getDefault(), '->setDefault() changes the default value');
+        $argument->setDefault([1, 2]);
+        $this->assertEquals([1, 2], $argument->getDefault(), '->setDefault() changes the default value');
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php b/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
index 0fd4342166e4..a607e4c47c85 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
@@ -35,10 +35,10 @@ public function testConstructorArguments()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $this->assertEquals(array(), $definition->getArguments(), '__construct() creates a new InputDefinition object');
+        $this->assertEquals([], $definition->getArguments(), '__construct() creates a new InputDefinition object');
 
-        $definition = new InputDefinition(array($this->foo, $this->bar));
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getArguments(), '__construct() takes an array of InputArgument objects as its first argument');
+        $definition = new InputDefinition([$this->foo, $this->bar]);
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getArguments(), '__construct() takes an array of InputArgument objects as its first argument');
     }
 
     public function testConstructorOptions()
@@ -46,10 +46,10 @@ public function testConstructorOptions()
         $this->initializeOptions();
 
         $definition = new InputDefinition();
-        $this->assertEquals(array(), $definition->getOptions(), '__construct() creates a new InputDefinition object');
+        $this->assertEquals([], $definition->getOptions(), '__construct() creates a new InputDefinition object');
 
-        $definition = new InputDefinition(array($this->foo, $this->bar));
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getOptions(), '__construct() takes an array of InputOption objects as its first argument');
+        $definition = new InputDefinition([$this->foo, $this->bar]);
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getOptions(), '__construct() takes an array of InputOption objects as its first argument');
     }
 
     public function testSetArguments()
@@ -57,11 +57,11 @@ public function testSetArguments()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->setArguments(array($this->foo));
-        $this->assertEquals(array('foo' => $this->foo), $definition->getArguments(), '->setArguments() sets the array of InputArgument objects');
-        $definition->setArguments(array($this->bar));
+        $definition->setArguments([$this->foo]);
+        $this->assertEquals(['foo' => $this->foo], $definition->getArguments(), '->setArguments() sets the array of InputArgument objects');
+        $definition->setArguments([$this->bar]);
 
-        $this->assertEquals(array('bar' => $this->bar), $definition->getArguments(), '->setArguments() clears all InputArgument objects');
+        $this->assertEquals(['bar' => $this->bar], $definition->getArguments(), '->setArguments() clears all InputArgument objects');
     }
 
     public function testAddArguments()
@@ -69,10 +69,10 @@ public function testAddArguments()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->addArguments(array($this->foo));
-        $this->assertEquals(array('foo' => $this->foo), $definition->getArguments(), '->addArguments() adds an array of InputArgument objects');
-        $definition->addArguments(array($this->bar));
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getArguments(), '->addArguments() does not clear existing InputArgument objects');
+        $definition->addArguments([$this->foo]);
+        $this->assertEquals(['foo' => $this->foo], $definition->getArguments(), '->addArguments() adds an array of InputArgument objects');
+        $definition->addArguments([$this->bar]);
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getArguments(), '->addArguments() does not clear existing InputArgument objects');
     }
 
     public function testAddArgument()
@@ -81,9 +81,9 @@ public function testAddArgument()
 
         $definition = new InputDefinition();
         $definition->addArgument($this->foo);
-        $this->assertEquals(array('foo' => $this->foo), $definition->getArguments(), '->addArgument() adds a InputArgument object');
+        $this->assertEquals(['foo' => $this->foo], $definition->getArguments(), '->addArgument() adds a InputArgument object');
         $definition->addArgument($this->bar);
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getArguments(), '->addArgument() adds a InputArgument object');
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getArguments(), '->addArgument() adds a InputArgument object');
     }
 
     /**
@@ -130,7 +130,7 @@ public function testGetArgument()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->addArguments(array($this->foo));
+        $definition->addArguments([$this->foo]);
         $this->assertEquals($this->foo, $definition->getArgument('foo'), '->getArgument() returns a InputArgument by its name');
     }
 
@@ -143,7 +143,7 @@ public function testGetInvalidArgument()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->addArguments(array($this->foo));
+        $definition->addArguments([$this->foo]);
         $definition->getArgument('bar');
     }
 
@@ -152,7 +152,7 @@ public function testHasArgument()
         $this->initializeArguments();
 
         $definition = new InputDefinition();
-        $definition->addArguments(array($this->foo));
+        $definition->addArguments([$this->foo]);
 
         $this->assertTrue($definition->hasArgument('foo'), '->hasArgument() returns true if a InputArgument exists for the given name');
         $this->assertFalse($definition->hasArgument('bar'), '->hasArgument() returns false if a InputArgument exists for the given name');
@@ -182,28 +182,28 @@ public function testGetArgumentCount()
 
     public function testGetArgumentDefaults()
     {
-        $definition = new InputDefinition(array(
+        $definition = new InputDefinition([
             new InputArgument('foo1', InputArgument::OPTIONAL),
             new InputArgument('foo2', InputArgument::OPTIONAL, '', 'default'),
             new InputArgument('foo3', InputArgument::OPTIONAL | InputArgument::IS_ARRAY),
         //  new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', array(1, 2)),
-        ));
-        $this->assertEquals(array('foo1' => null, 'foo2' => 'default', 'foo3' => array()), $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
+        ]);
+        $this->assertEquals(['foo1' => null, 'foo2' => 'default', 'foo3' => []], $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
 
-        $definition = new InputDefinition(array(
-            new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', array(1, 2)),
-        ));
-        $this->assertEquals(array('foo4' => array(1, 2)), $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
+        $definition = new InputDefinition([
+            new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', [1, 2]),
+        ]);
+        $this->assertEquals(['foo4' => [1, 2]], $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
     }
 
     public function testSetOptions()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
-        $this->assertEquals(array('foo' => $this->foo), $definition->getOptions(), '->setOptions() sets the array of InputOption objects');
-        $definition->setOptions(array($this->bar));
-        $this->assertEquals(array('bar' => $this->bar), $definition->getOptions(), '->setOptions() clears all InputOption objects');
+        $definition = new InputDefinition([$this->foo]);
+        $this->assertEquals(['foo' => $this->foo], $definition->getOptions(), '->setOptions() sets the array of InputOption objects');
+        $definition->setOptions([$this->bar]);
+        $this->assertEquals(['bar' => $this->bar], $definition->getOptions(), '->setOptions() clears all InputOption objects');
     }
 
     /**
@@ -214,8 +214,8 @@ public function testSetOptionsClearsOptions()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
-        $definition->setOptions(array($this->bar));
+        $definition = new InputDefinition([$this->foo]);
+        $definition->setOptions([$this->bar]);
         $definition->getOptionForShortcut('f');
     }
 
@@ -223,10 +223,10 @@ public function testAddOptions()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
-        $this->assertEquals(array('foo' => $this->foo), $definition->getOptions(), '->addOptions() adds an array of InputOption objects');
-        $definition->addOptions(array($this->bar));
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getOptions(), '->addOptions() does not clear existing InputOption objects');
+        $definition = new InputDefinition([$this->foo]);
+        $this->assertEquals(['foo' => $this->foo], $definition->getOptions(), '->addOptions() adds an array of InputOption objects');
+        $definition->addOptions([$this->bar]);
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getOptions(), '->addOptions() does not clear existing InputOption objects');
     }
 
     public function testAddOption()
@@ -235,9 +235,9 @@ public function testAddOption()
 
         $definition = new InputDefinition();
         $definition->addOption($this->foo);
-        $this->assertEquals(array('foo' => $this->foo), $definition->getOptions(), '->addOption() adds a InputOption object');
+        $this->assertEquals(['foo' => $this->foo], $definition->getOptions(), '->addOption() adds a InputOption object');
         $definition->addOption($this->bar);
-        $this->assertEquals(array('foo' => $this->foo, 'bar' => $this->bar), $definition->getOptions(), '->addOption() adds a InputOption object');
+        $this->assertEquals(['foo' => $this->foo, 'bar' => $this->bar], $definition->getOptions(), '->addOption() adds a InputOption object');
     }
 
     /**
@@ -270,7 +270,7 @@ public function testGetOption()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $this->assertEquals($this->foo, $definition->getOption('foo'), '->getOption() returns a InputOption by its name');
     }
 
@@ -282,7 +282,7 @@ public function testGetInvalidOption()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $definition->getOption('bar');
     }
 
@@ -290,7 +290,7 @@ public function testHasOption()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $this->assertTrue($definition->hasOption('foo'), '->hasOption() returns true if a InputOption exists for the given name');
         $this->assertFalse($definition->hasOption('bar'), '->hasOption() returns false if a InputOption exists for the given name');
     }
@@ -299,7 +299,7 @@ public function testHasShortcut()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $this->assertTrue($definition->hasShortcut('f'), '->hasShortcut() returns true if a InputOption exists for the given shortcut');
         $this->assertFalse($definition->hasShortcut('b'), '->hasShortcut() returns false if a InputOption exists for the given shortcut');
     }
@@ -308,7 +308,7 @@ public function testGetOptionForShortcut()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $this->assertEquals($this->foo, $definition->getOptionForShortcut('f'), '->getOptionForShortcut() returns a InputOption by its shortcut');
     }
 
@@ -316,7 +316,7 @@ public function testGetOptionForMultiShortcut()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->multi));
+        $definition = new InputDefinition([$this->multi]);
         $this->assertEquals($this->multi, $definition->getOptionForShortcut('m'), '->getOptionForShortcut() returns a InputOption by its shortcut');
         $this->assertEquals($this->multi, $definition->getOptionForShortcut('mmm'), '->getOptionForShortcut() returns a InputOption by its shortcut');
     }
@@ -329,30 +329,30 @@ public function testGetOptionForInvalidShortcut()
     {
         $this->initializeOptions();
 
-        $definition = new InputDefinition(array($this->foo));
+        $definition = new InputDefinition([$this->foo]);
         $definition->getOptionForShortcut('l');
     }
 
     public function testGetOptionDefaults()
     {
-        $definition = new InputDefinition(array(
+        $definition = new InputDefinition([
             new InputOption('foo1', null, InputOption::VALUE_NONE),
             new InputOption('foo2', null, InputOption::VALUE_REQUIRED),
             new InputOption('foo3', null, InputOption::VALUE_REQUIRED, '', 'default'),
             new InputOption('foo4', null, InputOption::VALUE_OPTIONAL),
             new InputOption('foo5', null, InputOption::VALUE_OPTIONAL, '', 'default'),
             new InputOption('foo6', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY),
-            new InputOption('foo7', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY, '', array(1, 2)),
-        ));
-        $defaults = array(
+            new InputOption('foo7', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY, '', [1, 2]),
+        ]);
+        $defaults = [
             'foo1' => false,
             'foo2' => null,
             'foo3' => 'default',
             'foo4' => null,
             'foo5' => 'default',
-            'foo6' => array(),
-            'foo7' => array(1, 2),
-        );
+            'foo6' => [],
+            'foo7' => [1, 2],
+        ];
         $this->assertSame($defaults, $definition->getOptionDefaults(), '->getOptionDefaults() returns the default values for all options');
     }
 
@@ -366,25 +366,25 @@ public function testGetSynopsis(InputDefinition $definition, $expectedSynopsis,
 
     public function getGetSynopsisData()
     {
-        return array(
-            array(new InputDefinition(array(new InputOption('foo'))), '[--foo]', 'puts optional options in square brackets'),
-            array(new InputDefinition(array(new InputOption('foo', 'f'))), '[-f|--foo]', 'separates shortcut with a pipe'),
-            array(new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_REQUIRED))), '[-f|--foo FOO]', 'uses shortcut as value placeholder'),
-            array(new InputDefinition(array(new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL))), '[-f|--foo [FOO]]', 'puts optional values in square brackets'),
+        return [
+            [new InputDefinition([new InputOption('foo')]), '[--foo]', 'puts optional options in square brackets'],
+            [new InputDefinition([new InputOption('foo', 'f')]), '[-f|--foo]', 'separates shortcut with a pipe'],
+            [new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_REQUIRED)]), '[-f|--foo FOO]', 'uses shortcut as value placeholder'],
+            [new InputDefinition([new InputOption('foo', 'f', InputOption::VALUE_OPTIONAL)]), '[-f|--foo [FOO]]', 'puts optional values in square brackets'],
 
-            array(new InputDefinition(array(new InputArgument('foo', InputArgument::REQUIRED))), '<foo>', 'puts arguments in angle brackets'),
-            array(new InputDefinition(array(new InputArgument('foo'))), '[<foo>]', 'puts optional arguments in square brackets'),
-            array(new InputDefinition(array(new InputArgument('foo'), new InputArgument('bar'))), '[<foo> [<bar>]]', 'chains optional arguments inside brackets'),
-            array(new InputDefinition(array(new InputArgument('foo', InputArgument::IS_ARRAY))), '[<foo>...]', 'uses an ellipsis for array arguments'),
-            array(new InputDefinition(array(new InputArgument('foo', InputArgument::REQUIRED | InputArgument::IS_ARRAY))), '<foo>...', 'uses an ellipsis for required array arguments'),
+            [new InputDefinition([new InputArgument('foo', InputArgument::REQUIRED)]), '<foo>', 'puts arguments in angle brackets'],
+            [new InputDefinition([new InputArgument('foo')]), '[<foo>]', 'puts optional arguments in square brackets'],
+            [new InputDefinition([new InputArgument('foo'), new InputArgument('bar')]), '[<foo> [<bar>]]', 'chains optional arguments inside brackets'],
+            [new InputDefinition([new InputArgument('foo', InputArgument::IS_ARRAY)]), '[<foo>...]', 'uses an ellipsis for array arguments'],
+            [new InputDefinition([new InputArgument('foo', InputArgument::REQUIRED | InputArgument::IS_ARRAY)]), '<foo>...', 'uses an ellipsis for required array arguments'],
 
-            array(new InputDefinition(array(new InputOption('foo'), new InputArgument('foo', InputArgument::REQUIRED))), '[--foo] [--] <foo>', 'puts [--] between options and arguments'),
-        );
+            [new InputDefinition([new InputOption('foo'), new InputArgument('foo', InputArgument::REQUIRED)]), '[--foo] [--] <foo>', 'puts [--] between options and arguments'],
+        ];
     }
 
     public function testGetShortSynopsis()
     {
-        $definition = new InputDefinition(array(new InputOption('foo'), new InputOption('bar'), new InputArgument('cat')));
+        $definition = new InputDefinition([new InputOption('foo'), new InputOption('bar'), new InputArgument('cat')]);
         $this->assertEquals('[options] [--] [<cat>]', $definition->getSynopsis(true), '->getSynopsis(true) groups options in [options]');
     }
 
diff --git a/src/Symfony/Component/Console/Tests/Input/InputOptionTest.php b/src/Symfony/Component/Console/Tests/Input/InputOptionTest.php
index 66a6dd5ac32f..ad1c043ed5f3 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputOptionTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputOptionTest.php
@@ -39,7 +39,7 @@ public function testShortcut()
         $this->assertEquals('f', $option->getShortcut(), '__construct() can take a shortcut as its second argument');
         $option = new InputOption('foo', '-f|-ff|fff');
         $this->assertEquals('f|ff|fff', $option->getShortcut(), '__construct() removes the leading - of the shortcuts');
-        $option = new InputOption('foo', array('f', 'ff', '-fff'));
+        $option = new InputOption('foo', ['f', 'ff', '-fff']);
         $this->assertEquals('f|ff|fff', $option->getShortcut(), '__construct() removes the leading - of the shortcuts');
         $option = new InputOption('foo');
         $this->assertNull($option->getShortcut(), '__construct() makes the shortcut null by default');
@@ -132,7 +132,7 @@ public function testGetDefault()
         $this->assertNull($option->getDefault(), '->getDefault() returns null if no default value is configured');
 
         $option = new InputOption('foo', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY);
-        $this->assertEquals(array(), $option->getDefault(), '->getDefault() returns an empty array if option is an array');
+        $this->assertEquals([], $option->getDefault(), '->getDefault() returns an empty array if option is an array');
 
         $option = new InputOption('foo', null, InputOption::VALUE_NONE);
         $this->assertFalse($option->getDefault(), '->getDefault() returns false if the option does not take a value');
@@ -147,8 +147,8 @@ public function testSetDefault()
         $this->assertEquals('another', $option->getDefault(), '->setDefault() changes the default value');
 
         $option = new InputOption('foo', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY);
-        $option->setDefault(array(1, 2));
-        $this->assertEquals(array(1, 2), $option->getDefault(), '->setDefault() changes the default value');
+        $option->setDefault([1, 2]);
+        $this->assertEquals([1, 2], $option->getDefault(), '->setDefault() changes the default value');
     }
 
     /**
diff --git a/src/Symfony/Component/Console/Tests/Output/ConsoleSectionOutputTest.php b/src/Symfony/Component/Console/Tests/Output/ConsoleSectionOutputTest.php
index e5cd0597e424..4c292c2c695e 100644
--- a/src/Symfony/Component/Console/Tests/Output/ConsoleSectionOutputTest.php
+++ b/src/Symfony/Component/Console/Tests/Output/ConsoleSectionOutputTest.php
@@ -36,7 +36,7 @@ protected function tearDown()
 
     public function testClearAll()
     {
-        $sections = array();
+        $sections = [];
         $output = new ConsoleSectionOutput($this->stream, $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
         $output->writeln('Foo'.PHP_EOL.'Bar');
@@ -48,7 +48,7 @@ public function testClearAll()
 
     public function testClearNumberOfLines()
     {
-        $sections = array();
+        $sections = [];
         $output = new ConsoleSectionOutput($this->stream, $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
         $output->writeln("Foo\nBar\nBaz\nFooBar");
@@ -61,7 +61,7 @@ public function testClearNumberOfLines()
     public function testClearNumberOfLinesWithMultipleSections()
     {
         $output = new StreamOutput($this->stream);
-        $sections = array();
+        $sections = [];
         $output1 = new ConsoleSectionOutput($output->getStream(), $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
         $output2 = new ConsoleSectionOutput($output->getStream(), $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
@@ -78,7 +78,7 @@ public function testClearNumberOfLinesWithMultipleSections()
     public function testClearPreservingEmptyLines()
     {
         $output = new StreamOutput($this->stream);
-        $sections = array();
+        $sections = [];
         $output1 = new ConsoleSectionOutput($output->getStream(), $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
         $output2 = new ConsoleSectionOutput($output->getStream(), $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
@@ -93,7 +93,7 @@ public function testClearPreservingEmptyLines()
 
     public function testOverwrite()
     {
-        $sections = array();
+        $sections = [];
         $output = new ConsoleSectionOutput($this->stream, $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
         $output->writeln('Foo');
@@ -105,7 +105,7 @@ public function testOverwrite()
 
     public function testOverwriteMultipleLines()
     {
-        $sections = array();
+        $sections = [];
         $output = new ConsoleSectionOutput($this->stream, $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
         $output->writeln('Foo'.PHP_EOL.'Bar'.PHP_EOL.'Baz');
@@ -117,7 +117,7 @@ public function testOverwriteMultipleLines()
 
     public function testAddingMultipleSections()
     {
-        $sections = array();
+        $sections = [];
         $output1 = new ConsoleSectionOutput($this->stream, $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
         $output2 = new ConsoleSectionOutput($this->stream, $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
@@ -127,7 +127,7 @@ public function testAddingMultipleSections()
     public function testMultipleSectionsOutput()
     {
         $output = new StreamOutput($this->stream);
-        $sections = array();
+        $sections = [];
         $output1 = new ConsoleSectionOutput($output->getStream(), $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
         $output2 = new ConsoleSectionOutput($output->getStream(), $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
@@ -151,7 +151,7 @@ public function testClearSectionContainingQuestion()
         $input->expects($this->once())->method('isInteractive')->willReturn(true);
         $input->expects($this->once())->method('getStream')->willReturn($inputStream);
 
-        $sections = array();
+        $sections = [];
         $output = new ConsoleSectionOutput($this->stream, $sections, OutputInterface::VERBOSITY_NORMAL, true, new OutputFormatter());
 
         (new QuestionHelper())->ask($input, $output, new Question('What\'s your favorite super hero?'));
diff --git a/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php b/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
index 9b3c7f2dab8a..126abddc9c8f 100644
--- a/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
+++ b/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
@@ -79,8 +79,8 @@ public function testSetInputs()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->setInputs(array('I1', 'I2', 'I3'));
-        $tester->run(array('command' => 'foo'));
+        $tester->setInputs(['I1', 'I2', 'I3']);
+        $tester->run(['command' => 'foo']);
 
         $this->assertSame(0, $tester->getStatusCode());
         $this->assertEquals('Q1Q2Q3', $tester->getDisplay(true));
diff --git a/src/Symfony/Component/CssSelector/Node/FunctionNode.php b/src/Symfony/Component/CssSelector/Node/FunctionNode.php
index 89b6437801d8..063f8a27892a 100644
--- a/src/Symfony/Component/CssSelector/Node/FunctionNode.php
+++ b/src/Symfony/Component/CssSelector/Node/FunctionNode.php
@@ -34,7 +34,7 @@ class FunctionNode extends AbstractNode
      * @param string        $name
      * @param Token[]       $arguments
      */
-    public function __construct(NodeInterface $selector, string $name, array $arguments = array())
+    public function __construct(NodeInterface $selector, string $name, array $arguments = [])
     {
         $this->selector = $selector;
         $this->name = strtolower($name);
diff --git a/src/Symfony/Component/CssSelector/Parser/Token.php b/src/Symfony/Component/CssSelector/Parser/Token.php
index 91a98f71542a..9a324854b255 100644
--- a/src/Symfony/Component/CssSelector/Parser/Token.php
+++ b/src/Symfony/Component/CssSelector/Parser/Token.php
@@ -62,7 +62,7 @@ public function isFileEnd(): bool
         return self::TYPE_FILE_END === $this->type;
     }
 
-    public function isDelimiter(array $values = array()): bool
+    public function isDelimiter(array $values = []): bool
     {
         if (self::TYPE_DELIMITER !== $this->type) {
             return false;
diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index 22bc9380d62d..1a30bc249949 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -26,15 +26,15 @@ class DebugClassLoader
 {
     private $classLoader;
     private $isFinder;
-    private $loaded = array();
+    private $loaded = [];
     private static $caseCheck;
-    private static $checkedClasses = array();
-    private static $final = array();
-    private static $finalMethods = array();
-    private static $deprecated = array();
-    private static $internal = array();
-    private static $internalMethods = array();
-    private static $darwinCache = array('/' => array('/', array()));
+    private static $checkedClasses = [];
+    private static $final = [];
+    private static $finalMethods = [];
+    private static $deprecated = [];
+    private static $internal = [];
+    private static $internalMethods = [];
+    private static $darwinCache = ['/' => ['/', []]];
 
     public function __construct(callable $classLoader)
     {
@@ -94,7 +94,7 @@ class_exists('Psr\Log\LogLevel');
 
         foreach ($functions as $function) {
             if (!\is_array($function) || !$function[0] instanceof self) {
-                $function = array(new static($function), 'loadClass');
+                $function = [new static($function), 'loadClass'];
             }
 
             spl_autoload_register($function);
@@ -215,7 +215,7 @@ private function checkClass($class, $file = null)
 
     public function checkAnnotations(\ReflectionClass $refl, $class)
     {
-        $deprecations = arr
10000
ay();
+        $deprecations = [];
 
         // Don't trigger deprecations for classes in the same vendor
         if (2 > $len = 1 + (\strpos($class, '\\') ?: \strpos($class, '_'))) {
@@ -227,7 +227,7 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
 
         // Detect annotations on the class
         if (false !== $doc = $refl->getDocComment()) {
-            foreach (array('final', 'deprecated', 'internal') as $annotation) {
+            foreach (['final', 'deprecated', 'internal'] as $annotation) {
                 if (false !== \strpos($doc, $annotation) && preg_match('#\n \* @'.$annotation.'(?:( .+?)\.?)?\r?\n \*(?: @|/$)#s', $doc, $notice)) {
                     self::${$annotation}[$class] = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
                 }
@@ -269,10 +269,10 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
         }
 
         // Inherit @final and @internal annotations for methods
-        self::$finalMethods[$class] = array();
-        self::$internalMethods[$class] = array();
+        self::$finalMethods[$class] = [];
+        self::$internalMethods[$class] = [];
         foreach ($parentAndOwnInterfaces as $use) {
-            foreach (array('finalMethods', 'internalMethods') as $property) {
+            foreach (['finalMethods', 'internalMethods'] as $property) {
                 if (isset(self::${$property}[$use])) {
                     self::${$property}[$class] = self::${$property}[$class] ? self::${$property}[$use] + self::${$property}[$class] : self::${$property}[$use];
                 }
@@ -301,10 +301,10 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
                 continue;
             }
 
-            foreach (array('final', 'internal') as $annotation) {
+            foreach (['final', 'internal'] as $annotation) {
                 if (false !== \strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$)#s', $doc, $notice)) {
                     $message = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
-                    self::${$annotation.'Methods'}[$class][$method->name] = array($class, $message);
+                    self::${$annotation.'Methods'}[$class][$method->name] = [$class, $message];
                 }
             }
         }
@@ -342,7 +342,7 @@ public function checkCase(\ReflectionClass $refl, $file, $class)
         if (0 === substr_compare($real, $tail, -$tailLen, $tailLen, true)
             && 0 !== substr_compare($real, $tail, -$tailLen, $tailLen, false)
         ) {
-            return array(substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1));
+            return [substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)];
         }
     }
 
@@ -372,7 +372,7 @@ private function darwinRealpath($real)
                 $k = $kDir;
                 $i = \strlen($dir) - 1;
                 while (!isset(self::$darwinCache[$k])) {
-                    self::$darwinCache[$k] = array($dir, array());
+                    self::$darwinCache[$k] = [$dir, []];
                     self::$darwinCache[$dir] = &self::$darwinCache[$k];
 
                     while ('/' !== $dir[--$i]) {
diff --git a/src/Symfony/Component/Debug/ErrorHandler.php b/src/Symfony/Component/Debug/ErrorHandler.php
index 65b2cd347e13..0b3a45f933ea 100644
--- a/src/Symfony/Component/Debug/ErrorHandler.php
+++ b/src/Symfony/Component/Debug/ErrorHandler.php
@@ -47,7 +47,7 @@
  */
 class ErrorHandler
 {
-    private $levels = array(
+    private $levels = [
         E_DEPRECATED => 'Deprecated',
         E_USER_DEPRECATED => 'User Deprecated',
         E_NOTICE => 'Notice',
@@ -63,25 +63,25 @@ class ErrorHandler
         E_PARSE => 'Parse Error',
         E_ERROR => 'Error',
         E_CORE_ERROR => 'Core Error',
-    );
-
-    private $loggers = array(
-        E_DEPRECATED => array(null, LogLevel::INFO),
-        E_USER_DEPRECATED => array(null, LogLevel::INFO),
-        E_NOTICE => array(null, LogLevel::WARNING),
-        E_USER_NOTICE => array(null, LogLevel::WARNING),
-        E_STRICT => array(null, LogLevel::WARNING),
-        E_WARNING => array(null, LogLevel::WARNING),
-        E_USER_WARNING => array(null, LogLevel::WARNING),
-        E_COMPILE_WARNING => array(null, LogLevel::WARNING),
-        E_CORE_WARNING => array(null, LogLevel::WARNING),
-        E_USER_ERROR => array(null, LogLevel::CRITICAL),
-        E_RECOVERABLE_ERROR => array(null, LogLevel::CRITICAL),
-        E_COMPILE_ERROR => array(null, LogLevel::CRITICAL),
-        E_PARSE => array(null, LogLevel::CRITICAL),
-        E_ERROR => array(null, LogLevel::CRITICAL),
-        E_CORE_ERROR => array(null, LogLevel::CRITICAL),
-    );
+    ];
+
+    private $loggers = [
+        E_DEPRECATED => [null, LogLevel::INFO],
+        E_USER_DEPRECATED => [null, LogLevel::INFO],
+        E_NOTICE => [null, LogLevel::WARNING],
+        E_USER_NOTICE => [null, LogLevel::WARNING],
+        E_STRICT => [null, LogLevel::WARNING],
+        E_WARNING => [null, LogLevel::WARNING],
+        E_USER_WARNING => [null, LogLevel::WARNING],
+        E_COMPILE_WARNING => [null, LogLevel::WARNING],
+        E_CORE_WARNING => [null, LogLevel::WARNING],
+        E_USER_ERROR => [null, LogLevel::CRITICAL],
+        E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
+        E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
+        E_PARSE => [null, LogLevel::CRITICAL],
+        E_ERROR => [null, LogLevel::CRITICAL],
+        E_CORE_ERROR => [null, LogLevel::CRITICAL],
+    ];
 
     private $thrownErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
     private $scopedErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
@@ -97,7 +97,7 @@ class ErrorHandler
 
     private static $reservedMemory;
     private static $toStringException = null;
-    private static $silencedErrorCache = array();
+    private static $silencedErrorCache = [];
     private static $silencedErrorCount = 0;
     private static $exitCode = 0;
 
@@ -120,10 +120,10 @@ public static function register(self $handler = null, $replace = true)
             $handler = new static();
         }
 
-        if (null === $prev = set_error_handler(array($handler, 'handleError'))) {
+        if (null === $prev = set_error_handler([$handler, 'handleError'])) {
             restore_error_handler();
             // Specifying the error types earlier would expose us to https://bugs.php.net/63206
-            set_error_handler(array($handler, 'handleError'), $handler->thrownErrors | $handler->loggedErrors);
+            set_error_handler([$handler, 'handleError'], $handler->thrownErrors | $handler->loggedErrors);
             $handler->isRoot = true;
         }
 
@@ -137,12 +137,12 @@ public static function register(self $handler = null, $replace = true)
         } else {
             $handlerIsRegistered = true;
         }
-        if (\is_array($prev = set_exception_handler(array($handler, 'handleException'))) && $prev[0] instanceof self) {
+        if (\is_array($prev = set_exception_handler([$handler, 'handleException'])) && $prev[0] instanceof self) {
             restore_exception_handler();
             if (!$handlerIsRegistered) {
                 $handler = $prev[0];
             } elseif ($handler !== $prev[0] && $replace) {
-                set_exception_handler(array($handler, 'handleException'));
+                set_exception_handler([$handler, 'handleException']);
                 $p = $prev[0]->setExceptionHandler(null);
                 $handler->setExceptionHandler($p);
                 $prev[0]->setExceptionHandler($p);
@@ -175,12 +175,12 @@ public function __construct(BufferingLogger $bootstrappingLogger = null)
      */
     public function setDefaultLogger(LoggerInterface $logger, $levels = E_ALL, $replace = false)
     {
-        $loggers = array();
+        $loggers = [];
 
         if (\is_array($levels)) {
             foreach ($levels as $type => $logLevel) {
                 if (empty($this->loggers[$type][0]) || $replace || $this->loggers[$type][0] === $this->bootstrappingLogger) {
-                    $loggers[$type] = array($logger, $logLevel);
+                    $loggers[$type] = [$logger, $logLevel];
                 }
             }
         } else {
@@ -211,14 +211,14 @@ public function setLoggers(array $loggers)
     {
         $prevLogged = $this->loggedErrors;
         $prev = $this->loggers;
-        $flush = array();
+        $flush = [];
 
         foreach ($loggers as $type => $log) {
             if (!isset($prev[$type])) {
                 throw new \InvalidArgumentException('Unknown error type: '.$type);
             }
             if (!\is_array($log)) {
-                $log = array($log);
+                $log = [$log];
             } elseif (!array_key_exists(0, $log)) {
                 throw new \InvalidArgumentException('No logger provided');
             }
@@ -355,9 +355,9 @@ private function reRegister($prev)
             if ($handler === $this) {
                 restore_error_handler();
                 if ($this->isRoot) {
-                    set_error_handler(array($this, 'handleError'), $this->thrownErrors | $this->loggedErrors);
+                    set_error_handler([$this, 'handleError'], $this->thrownErrors | $this->loggedErrors);
                 } else {
-                    set_error_handler(array($this, 'handleError'));
+                    set_error_handler([$this, 'handleError']);
                 }
             }
         }
@@ -394,9 +394,9 @@ public function handleError($type, $message, $file, $line)
         $scope = $this->scopedErrors & $type;
 
         if (4 < $numArgs = \func_num_args()) {
-            $context = $scope ? (func_get_arg(4) ?: array()) : array();
+            $context = $scope ? (func_get_arg(4) ?: []) : [];
         } else {
-            $context = array();
+            $context = [];
         }
 
         if (isset($context['GLOBALS']) && $scope) {
@@ -412,19 +412,19 @@ public function handleError($type, $message, $file, $line)
             self::$toStringException = null;
         } elseif (!$throw && !($type & $level)) {
             if (!isset(self::$silencedErrorCache[$id = $file.':'.$line])) {
-                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : array();
+                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : [];
                 $errorAsException = new SilencedErrorContext($type, $file, $line, $lightTrace);
             } elseif (isset(self::$silencedErrorCache[$id][$message])) {
                 $lightTrace = null;
                 $errorAsException = self::$silencedErrorCache[$id][$message];
                 ++$errorAsException->count;
             } else {
-                $lightTrace = array();
+                $lightTrace = [];
                 $errorAsException = null;
             }
 
             if (100 < ++self::$silencedErrorCount) {
-                self::$silencedErrorCache = $lightTrace = array();
+                self::$silencedErrorCache = $lightTrace = [];
                 self::$silencedErrorCount = 1;
             }
             if ($errorAsException) {
@@ -442,8 +442,8 @@ public function handleError($type, $message, $file, $line)
                 $lightTrace = $this->cleanTrace($backtrace, $type, $file, $line, $throw);
                 $this->traceReflector->setValue($errorAsException, $lightTrace);
             } else {
-                $this->traceReflector->setValue($errorAsException, array());
-                $backtrace = array();
+                $this->traceReflector->setValue($errorAsException, []);
+                $backtrace = [];
             }
         }
 
@@ -489,7 +489,7 @@ public function handleError($type, $message, $file, $line)
             try {
                 $this->isRecursive = true;
                 $level = ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG;
-                $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? array('exception' => $errorAsException) : array());
+                $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? ['exception' => $errorAsException] : []);
             } finally {
                 $this->isRecursive = false;
             }
@@ -520,12 +520,12 @@ public function handleException($exception, array $error = null)
         if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
             if ($exception instanceof FatalErrorException) {
                 if ($exception instanceof FatalThrowableError) {
-                    $error = array(
+                    $error = [
                         'type' => $type,
                         'message' => $message = $exception->getMessage(),
                         'file' => $exception->getFile(),
                         'line' => $exception->getLine(),
-                    );
+                    ];
                 } else {
                     $message = 'Fatal '.$exception->getMessage();
                 }
@@ -537,7 +537,7 @@ public function handleException($exception, array $error = null)
         }
         if ($this->loggedErrors & $type) {
             try {
-                $this->loggers[$type][0]->log($this->loggers[$type][1], $message, array('exception' => $exception));
+                $this->loggers[$type][0]->log($this->loggers[$type][1], $message, ['exception' => $exception]);
             } catch (\Throwable $handlerException) {
             }
         }
@@ -579,7 +579,7 @@ public static function handleFatalError(array $error = null)
         }
 
         $handler = self::$reservedMemory = null;
-        $handlers = array();
+        $handlers = [];
         $previousHandler = null;
         $sameHandlerLimit = 10;
 
@@ -610,7 +610,7 @@ public static function handleFatalError(array $error = null)
             $handler[0]->setExceptionHandler($h);
         }
         $handler = $handler[0];
-        $handlers = array();
+        $handlers = [];
 
         if ($exit = null === $error) {
             $error = error_get_last();
@@ -654,11 +654,11 @@ public static function handleFatalError(array $error = null)
      */
     protected function getFatalErrorHandlers()
     {
-        return array(
+        return [
             new UndefinedFunctionFatalErrorHandler(),
             new UndefinedMethodFatalErrorHandler(),
             new ClassNotFoundFatalErrorHandler(),
-        );
+        ];
     }
 
     private function cleanTrace($backtrace, $type, $file, $line, $throw)
diff --git a/src/Symfony/Component/Debug/Exception/FlattenException.php b/src/Symfony/Component/Debug/Exception/FlattenException.php
index 599197286d55..fe587cb82642 100644
--- a/src/Symfony/Component/Debug/Exception/FlattenException.php
+++ b/src/Symfony/Component/Debug/Exception/FlattenException.php
@@ -38,7 +38,7 @@ public static function create(\Exception $exception, $statusCode = null, array $
         return static::createFromThrowable($exception, $statusCode, $headers);
     }
 
-    public static function createFromThrowable(\Throwable $exception, ?int $statusCode = null, array $headers = array()): self
+    public static function createFromThrowable(\Throwable $exception, ?int $statusCode = null, array $headers = []): self
     {
         $e = new static();
         $e->setMessage($exception->getMessage());
diff --git a/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php b/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php
index 6f84617c466f..236c56ed0e2e 100644
--- a/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php
+++ b/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php
@@ -25,7 +25,7 @@ class SilencedErrorContext implements \JsonSerializable
     private $line;
     private $trace;
 
-    public function __construct(int $severity, string $file, int $line, array $trace = array(), int $count = 1)
+    public function __construct(int $severity, string $file, int $line, array $trace = [], int $count = 1)
     {
         $this->severity = $severity;
         $this->file = $file;
@@ -56,12 +56,12 @@ public function getTrace()
 
     public function JsonSerialize()
     {
-        return array(
+        return [
             'severity' => $this->severity,
             'file' => $this->file,
             'line' => $this->line,
             'trace' => $this->trace,
             'count' => $this->count,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
index 15e476381abd..069796cddb9a 100644
--- a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
+++ b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
@@ -38,13 +38,13 @@ public function testRegister()
             $this->assertSame($handler, ErrorHandler::register($newHandler, false));
             $h = set_error_handler('var_dump');
             restore_error_handler();
-            $this->assertSame(array($handler, 'handleError'), $h);
+            $this->assertSame([$handler, 'handleError'], $h);
 
             try {
                 $this->assertSame($newHandler, ErrorHandler::register($newHandler, true));
                 $h = set_error_handler('var_dump');
                 restore_error_handler();
-                $this->assertSame(array($newHandler, 'handleError'), $h);
+                $this->assertSame([$newHandler, 'handleError'], $h);
             } catch (\Exception $e) {
             }
 
@@ -74,12 +74,12 @@ public function testErrorGetLast()
 
         try {
             @trigger_error('Hello', E_USER_WARNING);
-            $expected = array(
+            $expected = [
                 'type' => E_USER_WARNING,
                 'message' => 'Hello',
                 'file' => __FILE__,
                 'line' => __LINE__ - 5,
-            );
+            ];
             $this->assertSame($expected, error_get_last());
         } catch (\Exception $e) {
             restore_error_handler();
@@ -145,26 +145,26 @@ public function testDefaultLogger()
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
             $handler->setDefaultLogger($logger, E_NOTICE);
-            $handler->setDefaultLogger($logger, array(E_USER_NOTICE => LogLevel::CRITICAL));
-
-            $loggers = array(
-                E_DEPRECATED => array(null, LogLevel::INFO),
-                E_USER_DEPRECATED => array(null, LogLevel::INFO),
-                E_NOTICE => array($logger, LogLevel::WARNING),
-                E_USER_NOTICE => array($logger, LogLevel::CRITICAL),
-                E_STRICT => array(null, LogLevel::WARNING),
-                E_WARNING => array(null, LogLevel::WARNING),
-                E_USER_WARNING => array(null, LogLevel::WARNING),
-                E_COMPILE_WARNING => array(null, LogLevel::WARNING),
-                E_CORE_WARNING => array(null, LogLevel::WARNING),
-                E_USER_ERROR => array(null, LogLevel::CRITICAL),
-                E_RECOVERABLE_ERROR => array(null, LogLevel::CRITICAL),
-                E_COMPILE_ERROR => array(null, LogLevel::CRITICAL),
-                E_PARSE => array(null, LogLevel::CRITICAL),
-                E_ERROR => array(null, LogLevel::CRITICAL),
-                E_CORE_ERROR => array(null, LogLevel::CRITICAL),
-            );
-            $this->assertSame($loggers, $handler->setLoggers(array()));
+            $handler->setDefaultLogger($logger, [E_USER_NOTICE => LogLevel::CRITICAL]);
+
+            $loggers = [
+                E_DEPRECATED => [null, LogLevel::INFO],
+                E_USER_DEPRECATED => [null, LogLevel::INFO],
+                E_NOTICE => [$logger, LogLevel::WARNING],
+                E_USER_NOTICE => [$logger, LogLevel::CRITICAL],
+                E_STRICT => [null, LogLevel::WARNING],
+                E_WARNING => [null, LogLevel::WARNING],
+                E_USER_WARNING => [null, LogLevel::WARNING],
+                E_COMPILE_WARNING => [null, LogLevel::WARNING],
+                E_CORE_WARNING => [null, LogLevel::WARNING],
+                E_USER_ERROR => [null, LogLevel::CRITICAL],
+                E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
+                E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
+                E_PARSE => [null, LogLevel::CRITICAL],
+                E_ERROR => [null, LogLevel::CRITICAL],
+                E_CORE_ERROR => [null, LogLevel::CRITICAL],
+            ];
+            $this->assertSame($loggers, $handler->setLoggers([]));
         } finally {
             restore_error_handler();
             restore_exception_handler();
@@ -176,14 +176,14 @@ public function testHandleError()
         try {
             $handler = ErrorHandler::register();
             $handler->throwAt(0, true);
-            $this->assertFalse($handler->handleError(0, 'foo', 'foo.php', 12, array()));
+            $this->assertFalse($handler->handleError(0, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $handler = ErrorHandler::register();
             $handler->throwAt(3, true);
-            $this->assertFalse($handler->handleError(4, 'foo', 'foo.php', 12, array()));
+            $this->assertFalse($handler->handleError(4, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
@@ -191,7 +191,7 @@ public function testHandleError()
             $handler = ErrorHandler::register();
             $handler->throwAt(3, true);
             try {
-                $handler->handleError(4, 'foo', 'foo.php', 12, array());
+                $handler->handleError(4, 'foo', 'foo.php', 12, []);
             } catch (\ErrorException $e) {
                 $this->assertSame('Parse Error: foo', $e->getMessage());
                 $this->assertSame(4, $e->getSeverity());
@@ -204,14 +204,14 @@ public function testHandleError()
 
             $handler = ErrorHandler::register();
             $handler->throwAt(E_USER_DEPRECATED, true);
-            $this->assertFalse($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
+            $this->assertFalse($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $handler = ErrorHandler::register();
             $handler->throwAt(E_DEPRECATED, true);
-            $this->assertFalse($handler->handleError(E_DEPRECATED, 'foo', 'foo.php', 12, array()));
+            $this->assertFalse($handler->handleError(E_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
@@ -236,7 +236,7 @@ public function testHandleError()
 
             $handler = ErrorHandler::register();
             $handler->setDefaultLogger($logger, E_USER_DEPRECATED);
-            $this->assertTrue($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
+            $this->assertTrue($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
@@ -320,7 +320,7 @@ public function testHandleDeprecation()
 
         $handler = new ErrorHandler();
         $handler->setDefaultLogger($logger);
-        @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, array());
+        @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, []);
     }
 
     public function testHandleException()
@@ -369,27 +369,27 @@ public function testBootstrappingLogger()
         $bootLogger = new BufferingLogger();
         $handler = new ErrorHandler($bootLogger);
 
-        $loggers = array(
-            E_DEPRECATED => array($bootLogger, LogLevel::INFO),
-            E_USER_DEPRECATED => array($bootLogger, LogLevel::INFO),
-            E_NOTICE => array($bootLogger, LogLevel::WARNING),
-            E_USER_NOTICE => array($bootLogger, LogLevel::WARNING),
-            E_STRICT => array($bootLogger, LogLevel::WARNING),
-            E_WARNING => array($bootLogger, LogLevel::WARNING),
-            E_USER_WARNING => array($bootLogger, LogLevel::WARNING),
-            E_COMPILE_WARNING => array($bootLogger, LogLevel::WARNING),
-            E_CORE_WARNING => array($bootLogger, LogLevel::WARNING),
-            E_USER_ERROR => array($bootLogger, LogLevel::CRITICAL),
-            E_RECOVERABLE_ERROR => array($bootLogger, LogLevel::CRITICAL),
-            E_COMPILE_ERROR => array($bootLogger, LogLevel::CRITICAL),
-            E_PARSE => array($bootLogger, LogLevel::CRITICAL),
-            E_ERROR => array($bootLogger, LogLevel::CRITICAL),
-            E_CORE_ERROR => array($bootLogger, LogLevel::CRITICAL),
-        );
-
-        $this->assertSame($loggers, $handler->setLoggers(array()));
-
-        $handler->handleError(E_DEPRECATED, 'Foo message', __FILE__, 123, array());
+        $loggers = [
+            E_DEPRECATED => [$bootLogger, LogLevel::INFO],
+            E_USER_DEPRECATED => [$bootLogger, LogLevel::INFO],
+            E_NOTICE => [$bootLogger, LogLevel::WARNING],
+            E_USER_NOTICE => [$bootLogger, LogLevel::WARNING],
+            E_STRICT => [$bootLogger, LogLevel::WARNING],
+            E_WARNING => [$bootLogger, LogLevel::WARNING],
+            E_USER_WARNING => [$bootLogger, LogLevel::WARNING],
+            E_COMPILE_WARNING => [$bootLogger, LogLevel::WARNING],
+            E_CORE_WARNING => [$bootLogger, LogLevel::WARNING],
+            E_USER_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            E_RECOVERABLE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            E_COMPILE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            E_PARSE => [$bootLogger, LogLevel::CRITICAL],
+            E_ERROR => [$bootLogger, LogLevel::CRITICAL],
+            E_CORE_ERROR => [$bootLogger, LogLevel::CRITICAL],
+        ];
+
+        $this->assertSame($loggers, $handler->setLoggers([]));
+
+        $handler->handleError(E_DEPRECATED, 'Foo message', __FILE__, 123, []);
 
         $logs = $bootLogger->cleanLogs();
 
@@ -405,14 +405,14 @@ public function testBootstrappingLogger()
         $this->assertSame(123, $exception->getLine());
         $this->assertSame(E_DEPRECATED, $exception->getSeverity());
 
-        $bootLogger->log(LogLevel::WARNING, 'Foo message', array('exception' => $exception));
+        $bootLogger->log(LogLevel::WARNING, 'Foo message', ['exception' => $exception]);
 
         $mockLogger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $mockLogger->expects($this->once())
             ->method('log')
-            ->with(LogLevel::WARNING, 'Foo message', array('exception' => $exception));
+            ->with(LogLevel::WARNING, 'Foo message', ['exception' => $exception]);
 
-        $handler->setLoggers(array(E_DEPRECATED => array($mockLogger, LogLevel::WARNING)));
+        $handler->setLoggers([E_DEPRECATED => [$mockLogger, LogLevel::WARNING]]);
     }
 
     public function testSettingLoggerWhenExceptionIsBuffered()
@@ -425,7 +425,7 @@ public function testSettingLoggerWhenExceptionIsBuffered()
         $mockLogger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $mockLogger->expects($this->once())
             ->method('log')
-            ->with(LogLevel::CRITICAL, 'Uncaught Exception: Foo message', array('exception' => $exception));
+            ->with(LogLevel::CRITICAL, 'Uncaught Exception: Foo message', ['exception' => $exception]);
 
         $handler->setExceptionHandler(function () use ($handler, $mockLogger) {
             $handler->setDefaultLogger($mockLogger);
@@ -439,12 +439,12 @@ public function testHandleFatalError()
         try {
             $handler = ErrorHandler::register();
 
-            $error = array(
+            $error = [
                 'type' => E_PARSE,
                 'message' => 'foo',
                 'file' => 'bar',
                 'line' => 123,
-            );
+            ];
 
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
diff --git a/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php b/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
index 4bac16093516..5d55934f5313 100644
--- a/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
+++ b/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
@@ -61,7 +61,7 @@ public function testStatusCode()
         $flattened = FlattenException::create(new ConflictHttpException());
         $this->assertEquals('409', $flattened->getStatusCode());
 
-        $flattened = FlattenException::create(new MethodNotAllowedHttpException(array('POST')));
+        $flattened = FlattenException::create(new MethodNotAllowedHttpException(['POST']));
         $this->assertEquals('405', $flattened->getStatusCode());
 
         $flattened = FlattenException::create(new AccessDeniedHttpException());
@@ -96,23 +96,23 @@ public function testStatusCode()
 
     public function testHeadersForHttpException()
     {
-        $flattened = FlattenException::create(new MethodNotAllowedHttpException(array('POST')));
-        $this->assertEquals(array('Allow' => 'POST'), $flattened->getHeaders());
+        $flattened = FlattenException::create(new MethodNotAllowedHttpException(['POST']));
+        $this->assertEquals(['Allow' => 'POST'], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new UnauthorizedHttpException('Basic realm="My Realm"'));
-        $this->assertEquals(array('WWW-Authenticate' => 'Basic realm="My Realm"'), $flattened->getHeaders());
+        $this->assertEquals(['WWW-Authenticate' => 'Basic realm="My Realm"'], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new ServiceUnavailableHttpException('Fri, 31 Dec 1999 23:59:59 GMT'));
-        $this->assertEquals(array('Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'), $flattened->getHeaders());
+        $this->assertEquals(['Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new ServiceUnavailableHttpException(120));
-        $this->assertEquals(array('Retry-After' => 120), $flattened->getHeaders());
+        $this->assertEquals(['Retry-After' => 120], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new TooManyRequestsHttpException('Fri, 31 Dec 1999 23:59:59 GMT'));
-        $this->assertEquals(array('Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'), $flattened->getHeaders());
+        $this->assertEquals(['Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'], $flattened->getHeaders());
 
         $flattened = FlattenException::create(new TooManyRequestsHttpException(120));
-        $this->assertEquals(array('Retry-After' => 120), $flattened->getHeaders());
+        $this->assertEquals(['Retry-After' => 120], $flattened->getHeaders());
     }
 
     /**
@@ -162,7 +162,7 @@ public function testPrevious(\Throwable $exception)
 
         $this->assertSame($flattened2, $flattened->getPrevious());
 
-        $this->assertSame(array($flattened2), $flattened->getAllPrevious());
+        $this->assertSame([$flattened2], $flattened->getAllPrevious());
     }
 
     public function testPreviousError()
@@ -200,18 +200,18 @@ public function testFile(\Throwable $exception)
     public function testToArray(\Throwable $exception, string $expectedClass)
     {
         $flattened = FlattenException::createFromThrowable($exception);
-        $flattened->setTrace(array(), 'foo.php', 123);
+        $flattened->setTrace([], 'foo.php', 123);
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 'message' => 'test',
                 'class' => $expectedClass,
-                'trace' => array(array(
+                'trace' => [[
                     'namespace' => '', 'short_class' => '', 'class' => '', 'type' => '', 'function' => '', 'file' => 'foo.php', 'line' => 123,
-                    'args' => array(),
-                )),
-            ),
-        ), $flattened->toArray());
+                    'args' => [],
+                ]],
+            ],
+        ], $flattened->toArray());
     }
 
     public function testCreate()
@@ -229,10 +229,10 @@ public function testCreate()
 
     public function flattenDataProvider()
     {
-        return array(
-            array(new \Exception('test', 123), 'Exception'),
-            array(new \Error('test', 123), 'Error'),
-        );
+        return [
+            [new \Exception('test', 123), 'Exception'],
+            [new \Error('test', 123), 'Error'],
+        ];
     }
 
     public function testArguments()
@@ -242,15 +242,15 @@ public function testArguments()
 
         $incomplete = unserialize('O:14:"BogusTestClass":0:{}');
 
-        $exception = $this->createException(array(
-            (object) array('foo' => 1),
+        $exception = $this->createException([
+            (object) ['foo' => 1],
             new NotFoundHttpException(),
             $incomplete,
             $dh,
             $fh,
             function () {},
-            array(1, 2),
-            array('foo' => 123),
+            [1, 2],
+            ['foo' => 123],
             null,
             true,
             false,
@@ -260,7 +260,7 @@ function () {},
             '',
             INF,
             NAN,
-        ));
+        ]);
 
         $flattened = FlattenException::create($exception);
         $trace = $flattened->getTrace();
@@ -271,26 +271,26 @@ function () {},
         fclose($fh);
 
         $i = 0;
-        $this->assertSame(array('object', 'stdClass'), $array[$i++]);
-        $this->assertSame(array('object', 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException'), $array[$i++]);
-        $this->assertSame(array('incomplete-object', 'BogusTestClass'), $array[$i++]);
-        $this->assertSame(array('resource', 'stream'), $array[$i++]);
-        $this->assertSame(array('resource', 'stream'), $array[$i++]);
+        $this->assertSame(['object', 'stdClass'], $array[$i++]);
+        $this->assertSame(['object', 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException'], $array[$i++]);
+        $this->assertSame(['incomplete-object', 'BogusTestClass'], $array[$i++]);
+        $this->assertSame(['resource', 'stream'], $array[$i++]);
+        $this->assertSame(['resource', 'stream'], $array[$i++]);
 
         $args = $array[$i++];
         $this->assertSame($args[0], 'object');
         $this->assertTrue('Closure' === $args[1] || is_subclass_of($args[1], '\Closure'), 'Expect object class name to be Closure or a subclass of Closure.');
 
-        $this->assertSame(array('array', array(array('integer', 1), array('integer', 2))), $array[$i++]);
-        $this->assertSame(array('array', array('foo' => array('integer', 123))), $array[$i++]);
-        $this->assertSame(array('null', null), $array[$i++]);
-        $this->assertSame(array('boolean', true), $array[$i++]);
-        $this->assertSame(array('boolean', false), $array[$i++]);
-        $this->assertSame(array('integer', 0), $array[$i++]);
-        $this->assertSame(array('float', 0.0), $array[$i++]);
-        $this->assertSame(array('string', '0'), $array[$i++]);
-        $this->assertSame(array('string', ''), $array[$i++]);
-        $this->assertSame(array('float', INF), $array[$i++]);
+        $this->assertSame(['array', [['integer', 1], ['integer', 2]]], $array[$i++]);
+        $this->assertSame(['array', ['foo' => ['integer', 123]]], $array[$i++]);
+        $this->assertSame(['null', null], $array[$i++]);
+        $this->assertSame(['boolean', true], $array[$i++]);
+        $this->assertSame(['boolean', false], $array[$i++]);
+        $this->assertSame(['integer', 0], $array[$i++]);
+        $this->assertSame(['float', 0.0], $array[$i++]);
+        $this->assertSame(['string', '0'], $array[$i++]);
+        $this->assertSame(['string', ''], $array[$i++]);
+        $this->assertSame(['float', INF], $array[$i++]);
 
         // assertEquals() does not like NAN values.
         $this->assertEquals($array[$i][0], 'float');
@@ -300,7 +300,7 @@ function () {},
     public function testRecursionInArguments()
     {
         $a = null;
-        $a = array('foo', array(2, &$a));
+        $a = ['foo', [2, &$a]];
         $exception = $this->createException($a);
 
         $flattened = FlattenException::create($exception);
@@ -310,7 +310,7 @@ public function testRecursionInArguments()
 
     public function testTooBigArray()
     {
-        $a = array();
+        $a = [];
         for ($i = 0; $i < 20; ++$i) {
             for ($j = 0; $j < 50; ++$j) {
                 for ($k = 0; $k < 10; ++$k) {
@@ -325,7 +325,7 @@ public function testTooBigArray()
         $flattened = FlattenException::create($exception);
         $trace = $flattened->getTrace();
 
-        $this->assertSame($trace[1]['args'][0], array('array', array('array', '*SKIPPED over 10000 entries*')));
+        $this->assertSame($trace[1]['args'][0], ['array', ['array', '*SKIPPED over 10000 entries*']]);
 
         $serializeTrace = serialize($trace);
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php b/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
index e832685abab5..4f44855d3cc6 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
@@ -117,7 +117,7 @@ private function doProcessValue($value, $isRoot = false)
         }
 
         if ($constructor) {
-            array_unshift($this->methodCalls, array($constructor, $value->getArguments()));
+            array_unshift($this->methodCalls, [$constructor, $value->getArguments()]);
         }
 
         $this->methodCalls = $this->autowireCalls($reflectionClass, $isRoot);
@@ -291,8 +291,8 @@ private function getAutowiredReference(TypedReference $reference)
      */
     private function populateAvailableTypes()
     {
-        $this->types = array();
-        $this->ambiguousServiceTypes = array();
+        $this->types = [];
+        $this->ambiguousServiceTypes = [];
 
         foreach ($this->container->getDefinitions() as $id => $definition) {
             $this->populateAvailableType($id, $definition);
@@ -343,7 +343,7 @@ private function set(string $type, string $id)
 
         // keep an array of all services matching this type
         if (!isset($this->ambiguousServiceTypes[$type])) {
-            $this->ambiguousServiceTypes[$type] = array($this->types[$type]);
+            $this->ambiguousServiceTypes[$type] = [$this->types[$type]];
             unset($this->types[$type]);
         }
         $this->ambiguousServiceTypes[$type][] = $id;
@@ -418,7 +418,7 @@ private function createTypeAlternatives(TypedReference $reference)
 
     private function getAliasesSuggestionForType($type, $extraContext = null)
     {
-        $aliases = array();
+        $aliases = [];
         foreach (class_parents($type) + class_implements($type) as $parent) {
             if ($this->container->has($parent) && !$this->container->findDefinition($parent)->isAbstract()) {
                 $aliases[] = $parent;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php b/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
index b102e706414d..58c6e81a049d 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
@@ -22,7 +22,7 @@
 class Compiler
 {
     private $passConfig;
-    private $log = array();
+    private $log = [];
     private $serviceReferenceGraph;
 
     public function __construct()
@@ -95,7 +95,7 @@ public function compile(ContainerBuilder $container)
                 $pass->process($container);
             }
         } catch (\Exception $e) {
-            $usedEnvs = array();
+            $usedEnvs = [];
             $prev = $e;
 
             do {
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php b/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php
index bd3b3af21e1c..f49e8cf94998 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/DecoratorServicePass.php
@@ -32,9 +32,9 @@ public function process(ContainerBuilder $container)
             if (!$decorated = $definition->getDecoratedService()) {
                 continue;
             }
-            $definitions->insert(array($id, $definition), array($decorated[2], --$order));
+            $definitions->insert([$id, $definition], [$decorated[2], --$order]);
         }
-        $decoratingDefinitions = array();
+        $decoratingDefinitions = [];
 
         foreach ($definitions as list($id, $definition)) {
             list($inner, $renamedId) = $definition->getDecoratedService();
@@ -65,7 +65,7 @@ public function process(ContainerBuilder $container)
             if (isset($decoratingDefinitions[$inner])) {
                 $decoratingDefinition = $decoratingDefinitions[$inner];
                 $definition->setTags(array_merge($decoratingDefinition->getTags(), $definition->getTags()));
-                $decoratingDefinition->setTags(array());
+                $decoratingDefinition->setTags([]);
                 $decoratingDefinitions[$inner] = $definition;
             }
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
index 610a56bb0e60..cac12648a099 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
@@ -23,7 +23,7 @@
  */
 class InlineServiceDefinitionsPass extends AbstractRecursivePass implements RepeatablePassInterface
 {
-    private $cloningIds = array();
+    private $cloningIds = [];
 
     /**
      * {@inheritdoc}
@@ -118,7 +118,7 @@ private function isInlineableDefinition($id, Definition $definition, ServiceRefe
             return false;
         }
 
-        $ids = array();
+        $ids = [];
         $isReferencedByConstructor = false;
         foreach ($graph->getNode($id)->getInEdges() as $edge) {
             $isReferencedByConstructor = $isReferencedByConstructor || $edge->isReferencedByConstructor();
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php b/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php
index 8b53742d7c91..822dfe795c9b 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php
@@ -144,7 +144,7 @@ public function getEnvPlaceholders()
 
     public function getUnusedEnvPlaceholders(): array
     {
-        return null === $this->processedEnvPlaceholders ? array() : array_diff_key(parent::getEnvPlaceholders(), $this->processedEnvPlaceholders);
+        return null === $this->processedEnvPlaceholders ? [] : array_diff_key(parent::getEnvPlaceholders(), $this->processedEnvPlaceholders);
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
index 4b7999cae770..76c864b051a3 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
@@ -29,9 +29,9 @@ class PassConfig
     const TYPE_REMOVE = 'removing';
 
     private $mergePass;
-    private $afterRemovingPasses = array();
-    private $beforeOptimizationPasses = array();
-    private $beforeRemovingPasses = array();
+    private $afterRemovingPasses = [];
+    private $beforeOptimizationPasses = [];
+    private $beforeRemovingPasses = [];
     private $optimizationPasses;
     private $removingPasses;
 
@@ -39,16 +39,16 @@ public function __construct()
     {
         $this->mergePass = new MergeExtensionConfigurationPass();
 
-        $this->beforeOptimizationPasses = array(
-            100 => array(
+        $this->beforeOptimizationPasses = [
+            100 => [
                 new ResolveClassPass(),
                 new ResolveInstanceofConditionalsPass(),
                 new RegisterEnvVarProcessorsPass(),
-            ),
-            -1000 => array(new ExtensionCompilerPass()),
-        );
+            ],
+            -1000 => [new ExtensionCompilerPass()],
+        ];
 
-        $this->optimizationPasses = array(array(
+        $this->optimizationPasses = [[
             new ValidateEnvPlaceholdersPass(),
             new ResolveChildDefinitionsPass(),
             new ServiceLocatorTagPass(),
@@ -69,28 +69,28 @@ public function __construct()
             new CheckCircularReferencesPass(),
             new CheckReferenceValidityPass(),
             new CheckArgumentsValidityPass(false),
-        ));
+        ]];
 
-        $this->beforeRemovingPasses = array(
-            -100 => array(
+        $this->beforeRemovingPasses = [
+            -100 => [
                 new ResolvePrivatesPass(),
-            ),
-        );
+            ],
+        ];
 
-        $this->removingPasses = array(array(
+        $this->removingPasses = [[
             new RemovePrivateAliasesPass(),
             new ReplaceAliasByActualDefinitionPass(),
             new RemoveAbstractDefinitionsPass(),
-            new RepeatedPass(array(
+            new RepeatedPass([
                 new AnalyzeServiceReferencesPass(),
                 new InlineServiceDefinitionsPass(),
                 new AnalyzeServiceReferencesPass(),
                 new RemoveUnusedDefinitionsPass(),
-            )),
+            ]),
             new DefinitionErrorExceptionPass(),
             new CheckExceptionOnInvalidReferenceBehaviorPass(),
             new ResolveHotPathPass(),
-        ));
+        ]];
     }
 
     /**
@@ -101,7 +101,7 @@ public function __construct()
     public function getPasses()
     {
         return array_merge(
-            array($this->mergePass),
+            [$this->mergePass],
             $this->getBeforeOptimizationPasses(),
             $this->getOptimizationPasses(),
             $this->getBeforeRemovingPasses(),
@@ -129,7 +129,7 @@ public function addPass(CompilerPassInterface $pass, $type = self::TYPE_BEFORE_O
         $passes = &$this->$property;
 
         if (!isset($passes[$priority])) {
-            $passes[$priority] = array();
+            $passes[$priority] = [];
         }
         $passes[$priority][] = $pass;
     }
@@ -206,7 +206,7 @@ public function setMergePass(CompilerPassInterface $pass)
      */
     public function setAfterRemovingPasses(array $passes)
     {
-        $this->afterRemovingPasses = array($passes);
+        $this->afterRemovingPasses = [$passes];
     }
 
     /**
@@ -216,7 +216,7 @@ public function setAfterRemovingPasses(array $passes)
      */
     public function setBeforeOptimizationPasses(array $passes)
     {
-        $this->beforeOptimizationPasses = array($passes);
+        $this->beforeOptimizationPasses = [$passes];
     }
 
     /**
@@ -226,7 +226,7 @@ public function setBeforeOptimizationPasses(array $passes)
      */
     public function setBeforeRemovingPasses(array $passes)
     {
-        $this->beforeRemovingPasses = array($passes);
+        $this->beforeRemovingPasses = [$passes];
     }
 
     /**
@@ -236,7 +236,7 @@ public function setBeforeRemovingPasses(array $passes)
      */
     public function setOptimizationPasses(array $passes)
     {
-        $this->optimizationPasses = array($passes);
+        $this->optimizationPasses = [$passes];
     }
 
     /**
@@ -246,7 +246,7 @@ public function setOptimizationPasses(array $passes)
      */
     public function setRemovingPasses(array $passes)
     {
-        $this->removingPasses = array($passes);
+        $this->removingPasses = [$passes];
     }
 
     /**
@@ -259,7 +259,7 @@ public function setRemovingPasses(array $passes)
     private function sortPasses(array $passes)
     {
         if (0 === \count($passes)) {
-            return array();
+            return [];
         }
 
         krsort($passes);
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/RegisterServiceSubscribersPass.php b/src/Symfony/Component/DependencyInjection/Compiler/RegisterServiceSubscribersPass.php
index 41135097653e..150952ca5e7e 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/RegisterServiceSubscribersPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/RegisterServiceSubscribersPass.php
@@ -31,7 +31,7 @@ protected function processValue($value, $isRoot = false)
             return parent::processValue($value, $isRoot);
         }
 
-        $serviceMap = array();
+        $serviceMap = [];
         $autowire = $value->isAutowired();
 
         foreach ($value->getTag('container.service_subscriber') as $attributes) {
@@ -40,7 +40,7 @@ protected function processValue($value, $isRoot = false)
                 continue;
             }
             ksort($attributes);
-            if (array() !== array_diff(array_keys($attributes), array('id', 'key'))) {
+            if ([] !== array_diff(array_keys($attributes), ['id', 'key'])) {
                 throw new InvalidArgumentException(sprintf('The "container.service_subscriber" tag accepts only the "key" and "id" attributes, "%s" given for service "%s".', implode('", "', array_keys($attributes)), $this->currentId));
             }
             if (!array_key_exists('id', $attributes)) {
@@ -64,7 +64,7 @@ protected function processValue($value, $isRoot = false)
         }
         $class = $r->name;
 
-        $subscriberMap = array();
+        $subscriberMap = [];
 
         foreach ($class::getSubscribedServices() as $key => $type) {
             if (!\is_string($type) || !preg_match('/^\??[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+(?:\\\\[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+)*+$/', $type)) {
@@ -93,7 +93,7 @@ protected function processValue($value, $isRoot = false)
             throw new InvalidArgumentException(sprintf('Service %s not exist in the map returned by "%s::getSubscribedServices()" for service "%s".', $message, $class, $this->currentId));
         }
 
-        $value->addTag('container.service_subscriber.locator', array('id' => (string) ServiceLocatorTagPass::register($this->container, $subscriberMap, $this->currentId)));
+        $value->addTag('container.service_subscriber.locator', ['id' => (string) ServiceLocatorTagPass::register($this->container, $subscriberMap, $this->currentId)]);
 
         return parent::processValue($value);
     }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
index 3e1250cbddb6..3b38557ae430 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
@@ -47,7 +47,7 @@ public function process(ContainerBuilder $container)
     private function processDefinition(ContainerBuilder $container, $id, Definition $definition)
     {
         $instanceofConditionals = $definition->getInstanceofConditionals();
-        $autoconfiguredInstanceof = $definition->isAutoconfigured() ? $container->getAutoconfiguredInstanceof() : array();
+        $autoconfiguredInstanceof = $definition->isAutoconfigured() ? $container->getAutoconfiguredInstanceof() : [];
         if (!$instanceofConditionals && !$autoconfiguredInstanceof) {
             return $definition;
         }
@@ -58,10 +58,10 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
 
         $conditionals = $this->mergeConditionals($autoconfiguredInstanceof, $instanceofConditionals, $container);
 
-        $definition->setInstanceofConditionals(array());
+        $definition->setInstanceofConditionals([]);
         $parent = $shared = null;
-        $instanceofTags = array();
-        $instanceofCalls = array();
+        $instanceofTags = [];
+        $instanceofCalls = [];
 
         foreach ($conditionals as $interface => $instanceofDefs) {
             if ($interface !== $class && (!$container->getReflectionClass($class, false))) {
@@ -84,8 +84,8 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
                     $instanceofCalls[] = $methodCall;
                 }
 
-                $instanceofDef->setTags(array());
-                $instanceofDef->setMethodCalls(array());
+                $instanceofDef->setTags([]);
+                $instanceofDef->setMethodCalls([]);
 
                 if (isset($instanceofDef->getChanges()['shared'])) {
                     $shared = $instanceofDef->isShared();
@@ -98,7 +98,7 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
             $abstract = $container->setDefinition('.abstract.instanceof.'.$id, $definition);
 
             // cast Definition to ChildDefinition
-            $definition->setBindings(array());
+            $definition->setBindings([]);
             $definition = serialize($definition);
             $definition = substr_replace($definition, '53', 2, 2);
             $definition = substr_replace($definition, 'Child', 44, 0);
@@ -127,11 +127,11 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
 
             // reset fields with "merge" behavior
             $abstract
-                ->setBindings(array())
-                ->setArguments(array())
-                ->setMethodCalls(array())
+                ->setBindings([])
+                ->setArguments([])
+                ->setMethodCalls([])
                 ->setDecoratedService(null)
-                ->setTags(array())
+                ->setTags([])
                 ->setAbstract(true);
         }
 
@@ -141,7 +141,7 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
     private function mergeConditionals(array $autoconfiguredInstanceof, array $instanceofConditionals, ContainerBuilder $container)
     {
         // make each value an array of ChildDefinition
-        $conditionals = array_map(function ($childDef) { return array($childDef); }, $autoconfiguredInstanceof);
+        $conditionals = array_map(function ($childDef) { return [$childDef]; }, $autoconfiguredInstanceof);
 
         foreach ($instanceofConditionals as $interface => $instanceofDef) {
             // make sure the interface/class exists (but don't validate automaticInstanceofConditionals)
@@ -150,7 +150,7 @@ private function mergeConditionals(array $autoconfiguredInstanceof, array $insta
             }
 
             if (!isset($autoconfiguredInstanceof[$interface])) {
-                $conditionals[$interface] = array();
+                $conditionals[$interface] = [];
             }
 
             $conditionals[$interface][] = $instanceofDef;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ValidateEnvPlaceholdersPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ValidateEnvPlaceholdersPass.php
index 2524a5dca7c1..1848ec4dbcba 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ValidateEnvPlaceholdersPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ValidateEnvPlaceholdersPass.php
@@ -26,7 +26,7 @@
  */
 class ValidateEnvPlaceholdersPass implements CompilerPassInterface
 {
-    private static $typeFixtures = array('array' => array(), 'bool' => false, 'float' => 0.0, 'int' => 0, 'string' => '');
+    private static $typeFixtures = ['array' => [], 'bool' => false, 'float' => 0.0, 'int' => 0, 'string' => ''];
 
     /**
      * {@inheritdoc}
@@ -46,14 +46,14 @@ public function process(ContainerBuilder $container)
         $envTypes = $resolvingBag->getProvidedTypes();
         try {
             foreach ($resolvingBag->getEnvPlaceholders() + $resolvingBag->getUnusedEnvPlaceholders() as $env => $placeholders) {
-                $values = array();
+                $values = [];
                 if (false === $i = strpos($env, ':')) {
                     $default = $defaultBag->has("env($env)") ? $defaultBag->get("env($env)") : self::$typeFixtures['string'];
                     $defaultType = null !== $default ? self::getType($default) : 'string';
                     $values[$defaultType] = $default;
                 } else {
                     $prefix = substr($env, 0, $i);
-                    foreach ($envTypes[$prefix] ?? array('string') as $type) {
+                    foreach ($envTypes[$prefix] ?? ['string'] as $type) {
                         $values[$type] = self::$typeFixtures[$type] ?? null;
                     }
                 }
diff --git a/src/Symfony/Component/DependencyInjection/Container.php b/src/Symfony/Component/DependencyInjection/Container.php
index 9b012361a4b4..d800acb10712 100644
--- a/src/Symfony/Component/DependencyInjection/Container.php
+++ b/src/Symfony/Component/DependencyInjection/Container.php
@@ -40,16 +40,16 @@
 class Container implements ResettableContainerInterface
 {
     protected $parameterBag;
-    protected $services = array();
-    protected $fileMap = array();
-    protected $methodMap = array();
-    protected $factories = array();
-    protected $aliases = array();
-    protected $loading = array();
-    protected $resolving = array();
-    protected $syntheticIds = array();
-
-    private $envCache = array();
+    protected $services = [];
+    protected $fileMap = [];
+    protected $methodMap = [];
+    protected $factories = [];
+    protected $aliases = [];
+    protected $loading = [];
+    protected $resolving = [];
+    protected $syntheticIds = [];
+
+    private $envCache = [];
     private $compiled = false;
     private $getEnv;
 
@@ -219,7 +219,7 @@ public function get($id, $invalidBehavior = /* self::EXCEPTION_ON_INVALID_REFERE
     {
         return $this->services[$id]
             ?? $this->services[$id = $this->aliases[$id] ?? $id]
-            ?? ('service_container' === $id ? $this : ($this->factories[$id] ?? array($this, 'make'))($id, $invalidBehavior));
+            ?? ('service_container' === $id ? $this : ($this->factories[$id] ?? [$this, 'make'])($id, $invalidBehavior));
     }
 
     /**
@@ -230,7 +230,7 @@ public function get($id, $invalidBehavior = /* self::EXCEPTION_ON_INVALID_REFERE
     private function make(string $id, int $invalidBehavior)
     {
         if (isset($this->loading[$id])) {
-            throw new ServiceCircularReferenceException($id, array_merge(array_keys($this->loading), array($id)));
+            throw new ServiceCircularReferenceException($id, array_merge(array_keys($this->loading), [$id]));
         }
 
         $this->loading[$id] = true;
@@ -254,13 +254,13 @@ private function make(string $id, int $invalidBehavior)
                 throw new ServiceNotFoundException($id);
             }
             if (isset($this->syntheticIds[$id])) {
-                throw new ServiceNotFoundException($id, null, null, array(), sprintf('The "%s" service is synthetic, it needs to be set at boot time before it can be used.', $id));
+                throw new ServiceNotFoundException($id, null, null, [], sprintf('The "%s" service is synthetic, it needs to be set at boot time before it can be used.', $id));
             }
             if (isset($this->getRemovedIds()[$id])) {
-                throw new ServiceNotFoundException($id, null, null, array(), sprintf('The "%s" service or alias has been removed or inlined when the container was compiled. You should either make it public, or stop using the container directly and use dependency injection instead.', $id));
+                throw new ServiceNotFoundException($id, null, null, [], sprintf('The "%s" service or alias has been removed or inlined when the container was compiled. You should either make it public, or stop using the container directly and use dependency injection instead.', $id));
             }
 
-            $alternatives = array();
+            $alternatives = [];
             foreach ($this->getServiceIds() as $knownId) {
                 if ('' === $knownId || '.' === $knownId[0]) {
                     continue;
@@ -300,7 +300,7 @@ public function initialized($id)
      */
     public function reset()
     {
-        $this->services = $this->factories = array();
+        $this->services = $this->factories = [];
     }
 
     /**
@@ -310,7 +310,7 @@ public function reset()
      */
     public function getServiceIds()
     {
-        return array_unique(array_merge(array('service_container'), array_keys($this->fileMap), array_keys($this->methodMap), array_keys($this->services)));
+        return array_unique(array_merge(['service_container'], array_keys($this->fileMap), array_keys($this->methodMap), array_keys($this->services)));
     }
 
     /**
@@ -320,7 +320,7 @@ public function getServiceIds()
      */
     public function getRemovedIds()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -332,7 +332,7 @@ public function getRemovedIds()
      */
     public static function camelize($id)
     {
-        return strtr(ucwords(strtr($id, array('_' => ' ', '.' => '_ ', '\\' => '_ '))), array(' ' => ''));
+        return strtr(ucwords(strtr($id, ['_' => ' ', '.' => '_ ', '\\' => '_ '])), [' ' => '']);
     }
 
     /**
@@ -344,7 +344,7 @@ public static function camelize($id)
      */
     public static function underscore($id)
     {
-        return strtolower(preg_replace(array('/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'), array('\\1_\\2', '\\1_\\2'), str_replace('_', '.', $id)));
+        return strtolower(preg_replace(['/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'], ['\\1_\\2', '\\1_\\2'], str_replace('_', '.', $id)));
     }
 
     /**
@@ -375,7 +375,7 @@ protected function getEnv($name)
             return $this->envCache[$name];
         }
         if (!$this->has($id = 'container.env_var_processors_locator')) {
-            $this->set($id, new ServiceLocator(array()));
+            $this->set($id, new ServiceLocator([]));
         }
         if (!$this->getEnv) {
             $this->getEnv = new \ReflectionMethod($this, __FUNCTION__);
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 89135fc767d4..c4c0852c6a41 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -52,29 +52,29 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     /**
      * @var ExtensionInterface[]
      */
-    private $extensions = array();
+    private $extensions = [];
 
     /**
      * @var ExtensionInterface[]
      */
-    private $extensionsByNs = array();
+    private $extensionsByNs = [];
 
     /**
      * @var Definition[]
      */
-    private $definitions = array();
+    private $definitions = [];
 
     /**
      * @var Alias[]
      */
-    private $aliasDefinitions = array();
+    private $aliasDefinitions = [];
 
     /**
      * @var ResourceInterface[]
      */
-    private $resources = array();
+    private $resources = [];
 
-    private $extensionConfigs = array();
+    private $extensionConfigs = [];
 
     /**
      * @var Compiler
@@ -96,33 +96,33 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    private $expressionLanguageProviders = array();
+    private $expressionLanguageProviders = [];
 
     /**
      * @var string[] with tag names used by findTaggedServiceIds
      */
-    private $usedTags = array();
+    private $usedTags = [];
 
     /**
      * @var string[][] a map of env var names to their placeholders
      */
-    private $envPlaceholders = array();
+    private $envPlaceholders = [];
 
     /**
      * @var int[] a map of env vars to their resolution counter
      */
-    private $envCounters = array();
+    private $envCounters = [];
 
     /**
      * @var string[] the list of vendor directories
      */
     private $vendors;
 
-    private $autoconfiguredInstanceof = array();
+    private $autoconfiguredInstanceof = [];
 
-    private $removedIds = array();
+    private $removedIds = [];
 
-    private static $internalTypes = array(
+    private static $internalTypes = [
         'int' => true,
         'float' => true,
         'string' => true,
@@ -134,7 +134,7 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
         'callable' => true,
         'iterable' => true,
         'mixed' => true,
-    );
+    ];
 
     public function __construct(ParameterBagInterface $parameterBag = null)
     {
@@ -429,7 +429,7 @@ public function loadFromExtension($
97AE
extension, array $values = null)
         }
 
         if (\func_num_args() < 2) {
-            $values = array();
+            $values = [];
         }
 
         $namespace = $this->getExtension($extension)->getAlias();
@@ -561,7 +561,7 @@ private function doGet($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_
         }
         if (null === $inlineServices) {
             $isConstructorArgument = true;
-            $inlineServices = array();
+            $inlineServices = [];
         }
         try {
             if (ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE === $invalidBehavior) {
@@ -645,7 +645,7 @@ public function merge(self $container)
 
         foreach ($this->extensions as $name => $extension) {
             if (!isset($this->extensionConfigs[$name])) {
-                $this->extensionConfigs[$name] = array();
+                $this->extensionConfigs[$name] = [];
             }
 
             $this->extensionConfigs[$name] = array_merge($this->extensionConfigs[$name], $container->getExtensionConfig($name));
@@ -655,7 +655,7 @@ public function merge(self $container)
             $envPlaceholders = $container->getParameterBag()->getEnvPlaceholders();
             $this->getParameterBag()->mergeEnvPlaceholders($container->getParameterBag());
         } else {
-            $envPlaceholders = array();
+            $envPlaceholders = [];
         }
 
         foreach ($container->envCounters as $env => $count) {
@@ -688,7 +688,7 @@ public function merge(self $container)
     public function getExtensionConfig($name)
     {
         if (!isset($this->extensionConfigs[$name])) {
-            $this->extensionConfigs[$name] = array();
+            $this->extensionConfigs[$name] = [];
         }
 
         return $this->extensionConfigs[$name];
@@ -703,7 +703,7 @@ public function getExtensionConfig($name)
     public function prependExtensionConfig($name, array $config)
     {
         if (!isset($this->extensionConfigs[$name])) {
-            $this->extensionConfigs[$name] = array();
+            $this->extensionConfigs[$name] = [];
         }
 
         array_unshift($this->extensionConfigs[$name], $config);
@@ -751,7 +751,7 @@ public function compile(bool $resolveEnvPlaceholders = false)
             }
         }
 
-        $this->extensionConfigs = array();
+        $this->extensionConfigs = [];
 
         if ($bag instanceof EnvPlaceholderParameterBag) {
             if ($resolveEnvPlaceholders) {
@@ -805,7 +805,7 @@ public function addAliases(array $aliases)
      */
     public function setAliases(array $aliases)
     {
-        $this->aliasDefinitions = array();
+        $this->aliasDefinitions = [];
         $this->addAliases($aliases);
     }
 
@@ -945,7 +945,7 @@ public function addDefinitions(array $definitions)
      */
     public function setDefinitions(array $definitions)
     {
-        $this->definitions = array();
+        $this->definitions = [];
         $this->addDefinitions($definitions);
     }
 
@@ -1029,7 +1029,7 @@ public function findDefinition($id)
     {
         $id = (string) $id;
 
-        $seen = array();
+        $seen = [];
         while (isset($this->aliasDefinitions[$id])) {
             $id = (string) $this->aliasDefinitions[$id];
 
@@ -1101,7 +1101,7 @@ private function createService(Definition $definition, array &$inlineServices, $
 
         if (null !== $factory = $definition->getFactory()) {
             if (\is_array($factory)) {
-                $factory = array($this->doResolveServices($parameterBag->resolveValue($factory[0]), $inlineServices, $isConstructorArgument), $factory[1]);
+                $factory = [$this->doResolveServices($parameterBag->resolveValue($factory[0]), $inlineServices, $isConstructorArgument), $factory[1]];
             } elseif (!\is_string($factory)) {
                 throw new RuntimeException(sprintf('Cannot create service "%s" because of invalid factory', $id));
             }
@@ -1179,7 +1179,7 @@ public function resolveServices($value)
         return $this->doResolveServices($value);
     }
 
-    private function doResolveServices($value, array &$inlineServices = array(), $isConstructorArgument = false)
+    private function doResolveServices($value, array &$inlineServices = [], $isConstructorArgument = false)
     {
         if (\is_array($value)) {
             foreach ($value as $k => $v) {
@@ -1232,7 +1232,7 @@ private function doResolveServices($value, array &$inlineServices = array(), $is
         } elseif ($value instanceof Parameter) {
             $value = $this->getParameter((string) $value);
         } elseif ($value instanceof Expression) {
-            $value = $this->getExpressionLanguage()->evaluate($value, array('container' => $this));
+            $value = $this->getExpressionLanguage()->evaluate($value, ['container' => $this]);
         }
 
         return $value;
@@ -1260,7 +1260,7 @@ private function doResolveServices($value, array &$inlineServices = array(), $is
     public function findTaggedServiceIds($name, $throwOnAbstract = false)
     {
         $this->usedTags[] = $name;
-        $tags = array();
+        $tags = [];
         foreach ($this->getDefinitions() as $id => $definition) {
             if ($definition->hasTag($name)) {
                 if ($throwOnAbstract && $definition->isAbstract()) {
@@ -1280,7 +1280,7 @@ public function findTaggedServiceIds($name, $throwOnAbstract = false)
      */
     public function findTags()
     {
-        $tags = array();
+        $tags = [];
         foreach ($this->getDefinitions() as $id => $definition) {
             $tags = array_merge(array_keys($definition->getTags()), $tags);
         }
@@ -1360,7 +1360,7 @@ public function resolveEnvPlaceholders($value, $format = null, array &$usedEnvs
         }
 
         if (\is_array($value)) {
-            $result = array();
+            $result = [];
             foreach ($value as $k => $v) {
                 $result[\is_string($k) ? $this->resolveEnvPlaceholders($k, $format, $usedEnvs) : $k] = $this->resolveEnvPlaceholders($v, $format, $usedEnvs);
             }
@@ -1442,7 +1442,7 @@ public function log(CompilerPassInterface $pass, string $message)
      */
     public static function getServiceConditionals($value)
     {
-        $services = array();
+        $services = [];
 
         if (\is_array($value)) {
             foreach ($value as $v) {
@@ -1466,7 +1466,7 @@ public static function getServiceConditionals($value)
      */
     public static function getInitializedConditionals($value)
     {
-        $services = array();
+        $services = [];
 
         if (\is_array($value)) {
             foreach ($value as $v) {
@@ -1490,7 +1490,7 @@ public static function hash($value)
     {
         $hash = substr(base64_encode(hash('sha256', serialize($value), true)), 0, 7);
 
-        return str_replace(array('/', '+'), array('.', '_'), $hash);
+        return str_replace(['/', '+'], ['.', '_'], $hash);
     }
 
     /**
@@ -1534,7 +1534,7 @@ private function callMethod($service, $call, array &$inlineServices)
             }
         }
 
-        \call_user_func_array(array($service, $call[0]), $this->doResolveServices($this->getParameterBag()->unescapeValue($this->getParameterBag()->resolveValue($call[1])), $inlineServices));
+        \call_user_func_array([$service, $call[0]], $this->doResolveServices($this->getParameterBag()->unescapeValue($this->getParameterBag()->resolveValue($call[1])), $inlineServices));
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Definition.php b/src/Symfony/Component/DependencyInjection/Definition.php
index 9aa916a490b1..a3dd3f16ed56 100644
--- a/src/Symfony/Component/DependencyInjection/Definition.php
+++ b/src/Symfony/Component/DependencyInjection/Definition.php
@@ -28,12 +28,12 @@ class Definition
     private $shared = true;
     private $deprecated = false;
     private $deprecationTemplate;
-    private $properties = array();
-    private $calls = array();
-    private $instanceof = array();
+    private $properties = [];
+    private $calls = [];
+    private $instanceof = [];
     private $autoconfigured = false;
     private $configurator;
-    private $tags = array();
+    private $tags = [];
     private $public = true;
     private $private = true;
     private $synthetic = false;
@@ -41,11 +41,11 @@ class Definition
     private $lazy = false;
     private $decoratedService;
     private $autowired = false;
-    private $changes = array();
-    private $bindings = array();
-    private $errors = array();
+    private $changes = [];
+    private $bindings = [];
+    private $errors = [];
 
-    protected $arguments = array();
+    protected $arguments = [];
 
     private static $defaultDeprecationTemplate = 'The "%service_id%" service is deprecated. You should stop using it, as it will soon be removed.';
 
@@ -60,7 +60,7 @@ class Definition
      * @param string|null $class     The service class
      * @param array       $arguments An array of arguments to pass to the service constructor
      */
-    public function __construct($class = null, array $arguments = array())
+    public function __construct($class = null, array $arguments = [])
     {
         if (null !== $class) {
             $this->setClass($class);
@@ -144,7 +144,7 @@ public function setDecoratedService($id, $renamedId = null, $priority = 0)
         if (null === $id) {
             $this->decoratedService = null;
         } else {
-            $this->decoratedService = array($id, $renamedId, (int) $priority);
+            $this->decoratedService = [$id, $renamedId, (int) $priority];
         }
 
         return $this;
@@ -326,9 +326,9 @@ public function getArgument($index)
      *
      * @return $this
      */
-    public function setMethodCalls(array $calls = array())
+    public function setMethodCalls(array $calls = [])
     {
-        $this->calls = array();
+        $this->calls = [];
         foreach ($calls as $call) {
             $this->addMethodCall($call[0], $call[1]);
         }
@@ -346,12 +346,12 @@ public function setMethodCalls(array $calls = array())
      *
      * @throws InvalidArgumentException on empty $method param
      */
-    public function addMethodCall($method, array $arguments = array())
+    public function addMethodCall($method, array $arguments = [])
     {
         if (empty($method)) {
             throw new InvalidArgumentException('Method name cannot be empty.');
         }
-        $this->calls[] = array($method, $arguments);
+        $this->calls[] = [$method, $arguments];
 
         return $this;
     }
@@ -482,7 +482,7 @@ public function getTags()
      */
     public function getTag($name)
     {
-        return isset($this->tags[$name]) ? $this->tags[$name] : array();
+        return isset($this->tags[$name]) ? $this->tags[$name] : [];
     }
 
     /**
@@ -493,7 +493,7 @@ public function getTag($name)
      *
      * @return $this
      */
-    public function addTag($name, array $attributes = array())
+    public function addTag($name, array $attributes = [])
     {
         $this->tags[$name][] = $attributes;
 
@@ -533,7 +533,7 @@ public function clearTag($name)
      */
     public function clearTags()
     {
-        $this->tags = array();
+        $this->tags = [];
 
         return $this;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 102033ce6d1f..a45ef188d40b 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -58,7 +58,7 @@ class PhpDumper extends Dumper
     private $variableCount;
     private $inlinedDefinitions;
     private $serviceCalls;
-    private $reservedVariables = array('instance', 'class', 'this');
+    private $reservedVariables = ['instance', 'class', 'this'];
     private $expressionLanguage;
     private $targetDirRegex;
     private $targetDirMaxMatches;
@@ -69,8 +69,8 @@ class PhpDumper extends Dumper
     private $asFiles;
     private $hotPathTag;
     private $inlineRequires;
-    private $inlinedRequires = array();
-    private $circularReferences = array();
+    private $inlinedRequires = [];
+    private $circularReferences = [];
 
     /**
      * @var ProxyDumper
@@ -111,11 +111,11 @@ public function setProxyDumper(ProxyDumper $proxyDumper)
      *
      * @throws EnvParameterException When an env var exists but has not been dumped
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
         $this->targetDirRegex = null;
-        $this->inlinedRequires = array();
-        $options = array_merge(array(
+        $this->inlinedRequires = [];
+        $options = array_merge([
             'class' => 'ProjectServiceContainer',
             'base_class' => 'Container',
             'namespace' => '',
@@ -124,7 +124,7 @@ public function dump(array $options = array())
             'hot_path_tag' => 'container.hot_path',
             'inline_class_loader_parameter' => 'container.dumper.inline_class_loader',
             'build_time' => time(),
-        ), $options);
+        ], $options);
 
         $this->namespace = $options['namespace'];
         $this->asFiles = $options['as_files'];
@@ -156,8 +156,8 @@ public function dump(array $options = array())
         }
 
         (new AnalyzeServiceReferencesPass(false, !$this->getProxyDumper() instanceof NullDumper))->process($this->container);
-        $checkedNodes = array();
-        $this->circularReferences = array();
+        $checkedNodes = [];
+        $this->circularReferences = [];
         foreach ($this->container->getCompiler()->getServiceReferenceGraph()->getNodes() as $id => $node) {
             if (!$node->getValue() instanceof Definition) {
                 continue;
@@ -167,7 +167,7 @@ public function dump(array $options = array())
             }
         }
         $this->container->getCompiler()->getServiceReferenceGraph()->clear();
-        $checkedNodes = array();
+        $checkedNodes = [];
 
         $this->docStar = $options['debug'] ? '*' : '';
 
@@ -213,7 +213,7 @@ public function dump(array $options = array())
 // This file has been auto-generated by the Symfony Dependency Injection Component for internal use.
 
 EOF;
-            $files = array();
+            $files = [];
 
             $ids = $this->container->getRemovedIds();
             foreach ($this->container->getDefinitions() as $id => $definition) {
@@ -238,7 +238,7 @@ public function dump(array $options = array())
             }
             $files[$options['class'].'.php'] = $code;
             $hash = ucfirst(strtr(ContainerBuilder::hash($files), '._', 'xx'));
-            $code = array();
+            $code = [];
 
             foreach ($files as $file => $c) {
                 $code["Container{$hash}/{$file}"] = $c;
@@ -280,10 +280,10 @@ public function dump(array $options = array())
         }
 
         $this->targetDirRegex = null;
-        $this->inlinedRequires = array();
-        $this->circularReferences = array();
+        $this->inlinedRequires = [];
+        $this->circularReferences = [];
 
-        $unusedEnvs = array();
+        $unusedEnvs = [];
         foreach ($this->container->getEnvCounters() as $env => $use) {
             if (!$use) {
                 $unusedEnvs[] = $env;
@@ -308,7 +308,7 @@ private function getProxyDumper(): ProxyDumper
         return $this->proxyDumper;
     }
 
-    private function analyzeCircularReferences($sourceId, array $edges, &$checkedNodes, &$currentPath = array())
+    private function analyzeCircularReferences($sourceId, array $edges, &$checkedNodes, &$currentPath = [])
     {
         $checkedNodes[$sourceId] = true;
         $currentPath[$sourceId] = $sourceId;
@@ -337,7 +337,7 @@ private function analyzeCircularReferences($sourceId, array $edges, &$checkedNod
         unset($currentPath[$sourceId]);
     }
 
-    private function connectCircularReferences($sourceId, &$currentPath, &$subPath = array())
+    private function connectCircularReferences($sourceId, &$currentPath, &$subPath = [])
     {
         $subPath[$sourceId] = $sourceId;
         $currentPath[$sourceId] = $sourceId;
@@ -393,7 +393,7 @@ private function collectLineage($class, array &$lineage)
 
     private function generateProxyClasses()
     {
-        $alreadyGenerated = array();
+        $alreadyGenerated = [];
         $definitions = $this->container->getDefinitions();
         $strip = '' === $this->docStar && method_exists('Symfony\Component\HttpKernel\Kernel', 'stripComments');
         $proxyDumper = $this->getProxyDumper();
@@ -424,7 +424,7 @@ private function addServiceInclude(string $cId, Definition $definition): string
         $code = '';
 
         if ($this->inlineRequires && !$this->isHotPath($definition)) {
-            $lineage = array();
+            $lineage = [];
             foreach ($this->inlinedDefinitions as $def) {
                 if (!$def->isDeprecated() && \is_string($class = \is_array($factory = $def->getFactory()) && \is_string($factory[0]) ? $factory[0] : $def->getClass())) {
                     $this->collectLineage($class, $lineage);
@@ -533,7 +533,7 @@ private function addServiceMethodCalls(Definition $definition, string $variableN
     {
         $calls = '';
         foreach ($definition->getMethodCalls() as $call) {
-            $arguments = array();
+            $arguments = [];
             foreach ($call[1] as $value) {
                 $arguments[] = $this->dumpValue($value);
             }
@@ -586,11 +586,11 @@ private function addServiceConfigurator(Definition $definition, string $variable
     private function addService(string $id, Definition $definition, string &$file = null): string
     {
         $this->definitionVariables = new \SplObjectStorage();
-        $this->referenceVariables = array();
+        $this->referenceVariables = [];
         $this->variableCount = 0;
         $this->referenceVariables[$id] = new Variable('instance');
 
-        $return = array();
+        $return = [];
 
         if ($class = $definition->getClass()) {
             $class = $class instanceof Parameter ? '%'.$class.'%' : $this->container->resolveEnvPlaceholders($class);
@@ -652,8 +652,8 @@ protected function {$methodName}($lazyInitialization)
             return $asFile ? substr($code, 8).$e : $code.'        '.$e."    }\n";
         }
 
-        $this->serviceCalls = array();
-        $this->inlinedDefinitions = $this->getDefinitionsFromArguments(array($definition), null, $this->serviceCalls);
+        $this->serviceCalls = [];
+        $this->inlinedDefinitions = $this->getDefinitionsFromArguments([$definition], null, $this->serviceCalls);
 
         $code .= $this->addServiceInclude($id, $definition);
 
@@ -754,11 +754,11 @@ private function addInlineService(string $id, Definition $definition, Definition
             return '';
         }
 
-        $arguments = array($inlineDef->getArguments(), $inlineDef->getFactory());
+        $arguments = [$inlineDef->getArguments(), $inlineDef->getFactory()];
 
         $code = $this->addInlineVariables($id, $definition, $arguments, $forConstructor);
 
-        if ($arguments = array_filter(array($inlineDef->getProperties(), $inlineDef->getMethodCalls(), $inlineDef->getConfigurator()))) {
+        if ($arguments = array_filter([$inlineDef->getProperties(), $inlineDef->getMethodCalls(), $inlineDef->getConfigurator()])) {
             $isSimpleInstance = false;
         } elseif ($definition !== $inlineDef && 2 > $this->inlinedDefinitions[$inlineDef]) {
             return $code;
@@ -825,9 +825,9 @@ private function generateServiceFiles()
                 if (!$definition->isShared()) {
                     $i = strpos($code, "\n\ninclude_once ");
                     if (false !== $i && false !== $i = strpos($code, "\n\n", 2 + $i)) {
-                        $code = array(substr($code, 0, 2 + $i), substr($code, 2 + $i));
+                        $code = [substr($code, 0, 2 + $i), substr($code, 2 + $i)];
                     } else {
-                        $code = array("\n", $code);
+                        $code = ["\n", $code];
                     }
                     $code[1] = implode("\n", array_map(function ($line) { return $line ? '    '.$line : $line; }, explode("\n", $code[1])));
                     $factory = sprintf('$this->factories%s[\'%s\']', $definition->isPublic() ? '' : "['service_container']", $id);
@@ -845,7 +845,7 @@ private function addNewInstance(Definition $definition, $return, $instantiation,
         $class = $this->dumpValue($definition->getClass());
         $return = '        '.$return.$instantiation;
 
-        $arguments = array();
+        $arguments = [];
         foreach ($definition->getArguments() as $value) {
             $arguments[] = $this->dumpValue($value);
         }
@@ -1129,11 +1129,11 @@ private function addInlineRequires(): string
             return '';
         }
 
-        $lineage = array();
+        $lineage = [];
 
         foreach ($this->container->findTaggedServiceIds($this->hotPathTag) as $id => $tags) {
             $definition = $this->container->getDefinition($id);
-            $inlinedDefinitions = $this->getDefinitionsFromArguments(array($definition));
+            $inlinedDefinitions = $this->getDefinitionsFromArguments([$definition]);
 
             foreach ($inlinedDefinitions as $def) {
                 if (\is_string($class = \is_array($factory = $def->getFactory()) && \is_string($factory[0]) ? $factory[0] : $def->getClass())) {
@@ -1160,14 +1160,14 @@ private function addDefaultParametersMethod(): string
             return '';
         }
 
-        $php = array();
-        $dynamicPhp = array();
+        $php = [];
+        $dynamicPhp = [];
 
         foreach ($this->container->getParameterBag()->all() as $key => $value) {
             if ($key !== $resolvedKey = $this->container->resolveEnvPlaceholders($key)) {
                 throw new InvalidArgumentException(sprintf('Parameter name cannot use env parameters: %s.', $resolvedKey));
             }
-            $export = $this->exportParameters(array($value));
+            $export = $this->exportParameters([$value]);
             $export = explode('0 => ', substr(rtrim($export, " )\n"), 7, -1), 2);
 
             if (preg_match("/\\\$this->(?:getEnv\('(?:\w++:)*+\w++'\)|targetDirs\[\d++\])/", $export[1])) {
@@ -1289,7 +1289,7 @@ protected function getDefaultParameters()
      */
     private function exportParameters(array $parameters, string $path = '', int $indent = 12): string
     {
-        $php = array();
+        $php = [];
         foreach ($parameters as $key => $value) {
             if (\is_array($value)) {
                 $value = $this->exportParameters($value, $path.'/'.$key, $indent + 4);
@@ -1335,7 +1335,7 @@ private function wrapServiceConditionals($value, string $code): string
 
     private function getServiceConditionals($value): string
     {
-        $conditions = array();
+        $conditions = [];
         foreach (ContainerBuilder::getInitializedConditionals($value) as $service) {
             if (!$this->container->hasDefinition($service)) {
                 return 'false';
@@ -1357,7 +1357,7 @@ private function getServiceConditionals($value): string
         return implode(' && ', $conditions);
     }
 
-    private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage $definitions = null, array &$calls = array()): \SplObjectStorage
+    private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage $definitions = null, array &$calls = []): \SplObjectStorage
     {
         if (null === $definitions) {
             $definitions = new \SplObjectStorage();
@@ -1370,7 +1370,7 @@ private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage
                 $id = (string) $argument;
 
                 if (!isset($calls[$id])) {
-                    $calls[$id] = array(0, $argument->getInvalidBehavior());
+                    $calls[$id] = [0, $argument->getInvalidBehavior()];
                 } else {
                     $calls[$id][1] = min($calls[$id][1], $argument->getInvalidBehavior());
                 }
@@ -1382,7 +1382,7 @@ private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage
                 $definitions[$argument] = 1 + $definitions[$argument];
             } else {
                 $definitions[$argument] = 1;
-                $arguments = array($argument->getArguments(), $argument->getFactory(), $argument->getProperties(), $argument->getMethodCalls(), $argument->getConfigurator());
+                $arguments = [$argument->getArguments(), $argument->getFactory(), $argument->getProperties(), $argument->getMethodCalls(), $argument->getConfigurator()];
                 $this->getDefinitionsFromArguments($arguments, $definitions, $calls);
             }
         }
@@ -1399,14 +1399,14 @@ private function dumpValue($value, bool $interpolate = true): string
             if ($value && $interpolate && false !== $param = array_search($value, $this->container->getParameterBag()->all(), true)) {
                 return $this->dumpValue("%$param%");
             }
-            $code = array();
+            $code = [];
             foreach ($value as $k => $v) {
                 $code[] = sprintf('%s => %s', $this->dumpValue($k, $interpolate), $this->dumpValue($v, $interpolate));
             }
 
             return sprintf('array(%s)', implode(', ', $code));
         } elseif ($value instanceof ArgumentInterface) {
-            $scope = array($this->definitionVariables, $this->referenceVariables);
+            $scope = [$this->definitionVariables, $this->referenceVariables];
             $this->definitionVariables = $this->referenceVariables = null;
 
             try {
@@ -1425,14 +1425,14 @@ private function dumpValue($value, bool $interpolate = true): string
                 }
 
                 if ($value instanceof IteratorArgument) {
-                    $operands = array(0);
-                    $code = array();
+                    $operands = [0];
+                    $code = [];
                     $code[] = 'new RewindableGenerator(function () {';
 
                     if (!$values = $value->getValues()) {
                         $code[] = '            return new \EmptyIterator();';
                     } else {
-                        $countCode = array();
+                        $countCode = [];
                         $countCode[] = 'function () {';
 
                         foreach ($values as $k => $v) {
@@ -1470,7 +1470,7 @@ private function dumpValue($value, bool $interpolate = true): string
                 throw new RuntimeException('Cannot dump definitions which have a configurator.');
             }
 
-            $arguments = array();
+            $arguments = [];
             foreach ($value->getArguments() as $argument) {
                 $arguments[] = $this->dumpValue($argument);
             }
@@ -1524,7 +1524,7 @@ private function dumpValue($value, bool $interpolate = true): string
 
             return $this->getServiceCall($id, $value);
         } elseif ($value instanceof Expression) {
-            return $this->getExpressionLanguage()->compile((string) $value, array('this' => 'container'));
+            return $this->getExpressionLanguage()->compile((string) $value, ['this' => 'container']);
         } elseif ($value instanceof Parameter) {
             return $this->dumpParameter($value);
         } elseif (true === $interpolate && \is_string($value)) {
@@ -1641,8 +1641,8 @@ private function getServiceCall(string $id, Reference $reference = null): string
      */
     private function initializeMethodNamesMap(string $class)
     {
-        $this->serviceIdToMethodNameMap = array();
-        $this->usedMethodNames = array();
+        $this->serviceIdToMethodNameMap = [];
+        $this->usedMethodNames = [];
 
         if ($reflectionClass = $this->container->getReflectionClass($class)) {
             foreach ($reflectionClass->getMethods() as $method) {
diff --git a/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php b/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
index 0560de00f703..9fdc2fd775da 100644
--- a/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
+++ b/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
@@ -34,7 +34,7 @@ class ParameterNotFoundException extends InvalidArgumentException implements Not
      * @param string[]    $alternatives         Some parameter name alternatives
      * @param string|null $nonNestedAlternative The alternative parameter name when the user expected dot notation for nested parameters
      */
-    public function __construct(string $key, string $sourceId = null, string $sourceKey = null, \Exception $previous = null, array $alternatives = array(), string $nonNestedAlternative = null)
+    public function __construct(string $key, string $sourceId = null, string $sourceKey = null, \Exception $previous = null, array $alternatives = [], string $nonNestedAlternative = null)
     {
         $this->key = $key;
         $this->sourceId = $sourceId;
diff --git a/src/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php b/src/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php
index d867ec6f869c..5c63aea062f3 100644
--- a/src/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php
+++ b/src/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php
@@ -24,7 +24,7 @@ class ServiceNotFoundException extends InvalidArgumentException implements NotFo
     private $sourceId;
     private $alternatives;
 
-    public function __construct(string $id, string $sourceId = null, \Exception $previous = null, array $alternatives = array(), string $msg = null)
+    public function __construct(string $id, string $sourceId = null, \Exception $previous = null, array $alternatives = [], string $msg = null)
     {
         if (null !== $msg) {
             // no-op
diff --git a/src/Symfony/Component/DependencyInjection/ExpressionLanguage.php b/src/Symfony/Component/DependencyInjection/ExpressionLanguage.php
index a64561c3a971..4be1ae70858c 100644
--- a/src/Symfony/Component/DependencyInjection/ExpressionLanguage.php
+++ b/src/Symfony/Component/DependencyInjection/ExpressionLanguage.php
@@ -26,7 +26,7 @@ class ExpressionLanguage extends BaseExpressionLanguage
     /**
      * {@inheritdoc}
      */
-    public function __construct(CacheItemPoolInterface $cache = null, array $providers = array(), callable $serviceCompiler = null)
+    public function __construct(CacheItemPoolInterface $cache = null, array $providers = [], callable $serviceCompiler = null)
     {
         // prepend the default provider to let users override it easily
         array_unshift($providers, new ExpressionLanguageProvider($serviceCompiler));
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractServiceConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractServiceConfigurator.php
index 3d89e2a99e8e..9d3305e8ee08 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractServiceConfigurator.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/AbstractServiceConfigurator.php
@@ -18,9 +18,9 @@ abstract class AbstractServiceConfigurator extends AbstractConfigurator
 {
     protected $parent;
     protected $id;
-    private $defaultTags = array();
+    private $defaultTags = [];
 
-    public function __construct(ServicesConfigurator $parent, Definition $definition, string $id = null, array $defaultTags = array())
+    public function __construct(ServicesConfigurator $parent, Definition $definition, string $id = null, array $defaultTags = [])
     {
         $this->parent = $parent;
         $this->definition = $definition;
@@ -36,7 +36,7 @@ public function __destruct()
                 $this->definition->addTag($name, $attributes);
             }
         }
-        $this->defaultTags = array();
+        $this->defaultTags = [];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/DefaultsConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/DefaultsConfigurator.php
index 07f6b7257e2c..b928d7586029 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/DefaultsConfigurator.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/DefaultsConfigurator.php
@@ -32,7 +32,7 @@ class DefaultsConfigurator extends AbstractServiceConfigurator
      *
      * @throws InvalidArgumentException when an invalid tag name or attribute is provided
      */
-    final public function tag(string $name, array $attributes = array())
+    final public function tag(string $name, array $attributes = [])
     {
         if ('' === $name) {
             throw new InvalidArgumentException('The tag name in "_defaults" must be a non-empty string.');
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/ServicesConfigurator.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/ServicesConfigurator.php
index 978bb87a7172..366828ea4cbd 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/ServicesConfigurator.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/ServicesConfigurator.php
@@ -40,7 +40,7 @@ public function __construct(ContainerBuilder $container, PhpFileLoader $loader,
         $this->instanceof = &$instanceof;
         $this->anonymousHash = ContainerBuilder::hash($path ?: mt_rand());
         $this->anonymousCount = &$anonymousCount;
-        $instanceof = array();
+        $instanceof = [];
     }
 
     /**
@@ -88,7 +88,7 @@ final public function set(?string $id, string $class = null): ServiceConfigurato
         $definition->setAutowired($defaults->isAutowired());
         $definition->setAutoconfigured($defaults->isAutoconfigured());
         $definition->setBindings($defaults->getBindings());
-        $definition->setChanges(array());
+        $definition->setChanges([]);
 
         $configurator = new ServiceConfigurator($this->container, $this->instanceof, $allowParent, $this, $definition, $id, $defaults->getTags());
 
@@ -127,7 +127,7 @@ final public function get(string $id): ServiceConfigurator
         $allowParent = !$this->defaults->getChanges() && empty($this->instanceof);
         $definition = $this->container->getDefinition($id);
 
-        return new ServiceConfigurator($this->container, $definition->getInstanceofConditionals(), $allowParent, $this, $definition, $id, array());
+        return new ServiceConfigurator($this->container, $definition->getInstanceofConditionals(), $allowParent, $this, $definition, $id, []);
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Loader/FileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/FileLoader.php
index 858f2bca97f7..289491571258 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/FileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/FileLoader.php
@@ -28,7 +28,7 @@ abstract class FileLoader extends BaseFileLoader
 {
     protected $container;
     protected $isLoadingInstanceof = false;
-    protected $instanceof = array();
+    protected $instanceof = [];
 
     public function __construct(ContainerBuilder $container, FileLocatorInterface $locator)
     {
@@ -57,8 +57,8 @@ public function registerClasses(Definition $prototype, $namespace, $resource, $e
         $classes = $this->findClasses($namespace, $resource, $exclude);
         // prepare for deep cloning
         $serializedPrototype = serialize($prototype);
-        $interfaces = array();
-        $singlyImplemented = array();
+        $interfaces = [];
+        $singlyImplemented = [];
 
         foreach ($classes as $class => $errorMessage) {
             if (interface_exists($class, false)) {
@@ -105,7 +105,7 @@ private function findClasses($namespace, $pattern, $excludePattern)
     {
         $parameterBag = $this->container->getParameterBag();
 
-        $excludePaths = array();
+        $excludePaths = [];
         $excludePrefix = null;
         if ($excludePattern) {
             $excludePattern = $parameterBag->unescapeValue($parameterBag->resolveValue($excludePattern));
@@ -120,7 +120,7 @@ private function findClasses($namespace, $pattern, $excludePattern)
         }
 
         $pattern = $parameterBag->unescapeValue($parameterBag->resolveValue($pattern));
-        $classes = array();
+        $classes = [];
         $extRegexp = '/\\.php$/';
         $prefixLen = null;
         foreach ($this->glob($pattern, true, $resource) as $path => $info) {
diff --git a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
index b388b2b0f9c7..77e0325d7722 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
@@ -64,7 +64,7 @@ public function load($resource, $type = null)
         try {
             $this->parseDefinitions($xml, $path, $defaults);
         } finally {
-            $this->instanceof = array();
+            $this->instanceof = [];
         }
     }
 
@@ -135,11 +135,11 @@ private function parseDefinitions(\DOMDocument $xml, $file, $defaults)
         }
         $this->setCurrentDir(\dirname($file));
 
-        $this->instanceof = array();
+        $this->instanceof = [];
         $this->isLoadingInstanceof = true;
         $instanceof = $xpath->query('//container:services/container:instanceof');
         foreach ($instanceof as $service) {
-            $this->setDefinition((string) $service->getAttribute('id'), $this->parseDefinition($service, $file, array()));
+            $this->setDefinition((string) $service->getAttribute('id'), $this->parseDefinition($service, $file, []));
         }
 
         $this->isLoadingInstanceof = false;
@@ -165,12 +165,12 @@ private function getServiceDefaults(\DOMDocument $xml, $file)
         $xpath->registerNamespace('container', self::NS);
 
         if (null === $defaultsNode = $xpath->query('//container:services/container:defaults')->item(0)) {
-            return array();
+            return [];
         }
-        $defaults = array(
+        $defaults = [
             'tags' => $this->getChildren($defaultsNode, 'tag'),
             'bind' => array_map(function ($v) { return new BoundArgument($v); }, $this-
741A
>getArgumentsAsPhp($defaultsNode, 'bind', $file)),
-        );
+        ];
 
         foreach ($defaults['tags'] as $tag) {
             if ('' === $tag->getAttribute('name')) {
@@ -254,10 +254,10 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                 $definition->setAutoconfigured($defaults['autoconfigure']);
             }
 
-            $definition->setChanges(array());
+            $definition->setChanges([]);
         }
 
-        foreach (array('class', 'public', 'shared', 'synthetic', 'lazy', 'abstract') as $key) {
+        foreach (['class', 'public', 'shared', 'synthetic', 'lazy', 'abstract'] as $key) {
             if ($value = $service->getAttribute($key)) {
                 $method = 'set'.$key;
                 $definition->$method(XmlUtils::phpize($value));
@@ -298,7 +298,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                     $class = $factory->hasAttribute('class') ? $factory->getAttribute('class') : null;
                 }
 
-                $definition->setFactory(array($class, $factory->getAttribute('method')));
+                $definition->setFactory([$class, $factory->getAttribute('method')]);
             }
         }
 
@@ -313,7 +313,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                     $class = $configurator->getAttribute('class');
                 }
 
-                $definition->setConfigurator(array($class, $configurator->getAttribute('method')));
+                $definition->setConfigurator([$class, $configurator->getAttribute('method')]);
             }
         }
 
@@ -328,7 +328,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
         }
 
         foreach ($tags as $tag) {
-            $parameters = array();
+            $parameters = [];
             foreach ($tag->attributes as $name => $node) {
                 if ('name' === $name) {
                     continue;
@@ -378,7 +378,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
     private function parseFileToDOM($file)
     {
         try {
-            $dom = XmlUtils::loadFile($file, array($this, 'validateSchema'));
+            $dom = XmlUtils::loadFile($file, [$this, 'validateSchema']);
         } catch (\InvalidArgumentException $e) {
             throw new InvalidArgumentException(sprintf('Unable to parse file "%s".', $file), $e->getCode(), $e);
         }
@@ -397,7 +397,7 @@ private function parseFileToDOM($file)
      */
     private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
     {
-        $definitions = array();
+        $definitions = [];
         $count = 0;
         $suffix = '~'.ContainerBuilder::hash($file);
 
@@ -413,7 +413,7 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
                     $node->setAttribute('id', $id);
                     $node->setAttribute('service', $id);
 
-                    $definitions[$id] = array($services[0], $file);
+                    $definitions[$id] = [$services[0], $file];
                     $services[0]->setAttribute('id', $id);
 
                     // anonymous services are always private
@@ -433,7 +433,7 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
         // resolve definitions
         uksort($definitions, 'strnatcmp');
         foreach (array_reverse($definitions) as $id => list($domElement, $file)) {
-            if (null !== $definition = $this->parseDefinition($domElement, $file, array())) {
+            if (null !== $definition = $this->parseDefinition($domElement, $file, [])) {
                 $this->setDefinition($id, $definition);
             }
         }
@@ -451,7 +451,7 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
      */
     private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase = true, $isChildDefinition = false)
     {
-        $arguments = array();
+        $arguments = [];
         foreach ($this->getChildren($node, $name) as $arg) {
             if ($arg->hasAttribute('name')) {
                 $arg->setAttribute('key', $arg->getAttribute('name'));
@@ -542,7 +542,7 @@ private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase =
      */
     private function getChildren(\DOMNode $node, $name)
     {
-        $children = array();
+        $children = [];
         foreach ($node->childNodes as $child) {
             if ($child instanceof \DOMElement && $child->localName === $name && self::NS === $child->namespaceURI) {
                 $children[] = $child;
@@ -563,7 +563,7 @@ private function getChildren(\DOMNode $node, $name)
      */
     public function validateSchema(\DOMDocument $dom)
     {
-        $schemaLocations = array('http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd'));
+        $schemaLocations = ['http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd')];
 
         if ($element = $dom->documentElement->getAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'schemaLocation')) {
             $items = preg_split('/\s+/', $element);
@@ -584,7 +584,7 @@ public function validateSchema(\DOMDocument $dom)
             }
         }
 
-        $tmpfiles = array();
+        $tmpfiles = [];
         $imports = '';
         foreach ($schemaLocations as $namespace => $location) {
             $parts = explode('/', $location);
@@ -639,7 +639,7 @@ public function validateSchema(\DOMDocument $dom)
     private function validateAlias(\DOMElement $alias, $file)
     {
         foreach ($alias->attributes as $name => $node) {
-            if (!\in_array($name, array('alias', 'id', 'public'))) {
+            if (!\in_array($name, ['alias', 'id', 'public'])) {
                 throw new InvalidArgumentException(sprintf('Invalid attribute "%s" defined for alias "%s" in "%s".', $name, $alias->getAttribute('id'), $file));
             }
         }
@@ -688,7 +688,7 @@ private function loadFromExtensions(\DOMDocument $xml)
 
             $values = static::convertDomElementToArray($node);
             if (!\is_array($values)) {
-                $values = array();
+                $values = [];
             }
 
             $this->container->loadFromExtension($node->namespaceURI, $values);
diff --git a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
index d3ac1c2b8177..16cc1e047a43 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
@@ -37,7 +37,7 @@
  */
 class YamlFileLoader extends FileLoader
 {
-    private static $serviceKeywords = array(
+    private static $serviceKeywords = [
         'alias' => 'alias',
         'parent' => 'parent',
         'class' => 'class',
@@ -60,9 +60,9 @@ class YamlFileLoader extends FileLoader
         'autowire' => 'autowire',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
-    private static $prototypeKeywords = array(
+    private static $prototypeKeywords = [
         'resource' => 'resource',
         'namespace' => 'namespace',
         'exclude' => 'exclude',
@@ -81,9 +81,9 @@ class YamlFileLoader extends FileLoader
         'autowire' => 'autowire',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
-    private static $instanceofKeywords = array(
+    private static $instanceofKeywords = [
         'shared' => 'shared',
         'lazy' => 'lazy',
         'public' => 'public',
@@ -92,15 +92,15 @@ class YamlFileLoader extends FileLoader
         'calls' => 'calls',
         'tags' => 'tags',
         'autowire' => 'autowire',
-    );
+    ];
 
-    private static $defaultsKeywords = array(
+    private static $defaultsKeywords = [
         'public' => 'public',
         'tags' => 'tags',
         'autowire' => 'autowire',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
     private $yamlParser;
 
@@ -147,7 +147,7 @@ public function load($resource, $type = null)
         try {
             $this->parseDefinitions($content, $path);
         } finally {
-            $this->instanceof = array();
+            $this->instanceof = [];
         }
     }
 
@@ -160,11 +160,11 @@ public function supports($resource, $type = null)
             return false;
         }
 
-        if (null === $type && \in_array(pathinfo($resource, PATHINFO_EXTENSION), array('yaml', 'yml'), true)) {
+        if (null === $type && \in_array(pathinfo($resource, PATHINFO_EXTENSION), ['yaml', 'yml'], true)) {
             return true;
         }
 
-        return \in_array($type, array('yaml', 'yml'), true);
+        return \in_array($type, ['yaml', 'yml'], true);
     }
 
     private function parseImports(array $content, string $file)
@@ -180,7 +180,7 @@ private function parseImports(array $content, string $file)
         $defaultDirectory = \dirname($file);
         foreach ($content['imports'] as $import) {
             if (!\is_array($import)) {
-                $import = array('resource' => $import);
+                $import = ['resource' => $import];
             }
             if (!isset($import['resource'])) {
                 throw new InvalidArgumentException(sprintf('An import should provide a resource in %s. Check your YAML syntax.', $file));
@@ -208,7 +208,7 @@ private function parseDefinitions(array $content, string $file)
             if (!\is_array($instanceof)) {
                 throw new InvalidArgumentException(sprintf('Service "_instanceof" key must be an array, "%s" given in "%s".', \gettype($instanceof), $file));
             }
-            $this->instanceof = array();
+            $this->instanceof = [];
             $this->isLoadingInstanceof = true;
             foreach ($instanceof as $id => $service) {
                 if (!$service || !\is_array($service)) {
@@ -217,7 +217,7 @@ private function parseDefinitions(array $content, string $file)
                 if (\is_string($service) && 0 === strpos($service, '@')) {
                     throw new InvalidArgumentException(sprintf('Type definition "%s" cannot be an alias within "_instanceof" in %s. Check your YAML syntax.', $id, $file));
                 }
-                $this->parseDefinition($id, $service, $file, array());
+                $this->parseDefinition($id, $service, $file, []);
             }
         }
 
@@ -234,7 +234,7 @@ private function parseDefinitions(array $content, string $file)
     private function parseDefaults(array &$content, string $file): array
     {
         if (!array_key_exists('_defaults', $content['services'])) {
-            return array();
+            return [];
         }
         $defaults = $content['services']['_defaults'];
         unset($content['services']['_defaults']);
@@ -256,7 +256,7 @@ private function parseDefaults(array &$content, string $file): array
 
             foreach ($tags as $tag) {
                 if (!\is_array($tag)) {
-                    $tag = array('name' => $tag);
+                    $tag = ['name' => $tag];
                 }
 
                 if (!isset($tag['name'])) {
@@ -325,11 +325,11 @@ private function parseDefinition($id, $service, $file, array $defaults)
         }
 
         if (\is_array($service) && $this->isUsingShortSyntax($service)) {
-            $service = array('arguments' => $service);
+            $service = ['arguments' => $service];
         }
 
         if (null === $service) {
-            $service = array();
+            $service = [];
         }
 
         if (!\is_array($service)) {
@@ -347,7 +347,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
             }
 
             foreach ($service as $key => $value) {
-                if (!\in_array($key, array('alias', 'public'))) {
+                if (!\in_array($key, ['alias', 'public'])) {
                     throw new InvalidArgumentException(sprintf('The configuration key "%s" is unsupported for the service "%s" which is defined as an alias in "%s". Allowed configuration keys for service aliases are "alias" and "public".', $key, $id, $file));
                 }
             }
@@ -390,7 +390,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
                 $definition->setAutoconfigured($defaults['autoconfigure']);
             }
 
-            $definition->setChanges(array());
+            $definition->setChanges([]);
         }
 
         if (isset($service['class'])) {
@@ -449,10 +449,10 @@ private function parseDefinition($id, $service, $file, array $defaults)
             foreach ($service['calls'] as $call) {
                 if (isset($call['method'])) {
                     $method = $call['method'];
-                    $args = isset($call['arguments']) ? $this->resolveServices($call['arguments'], $file) : array();
+                    $args = isset($call['arguments']) ? $this->resolveServices($call['arguments'], $file) : [];
                 } else {
                     $method = $call[0];
-                    $args = isset($call[1]) ? $this->resolveServices($call[1], $file) : array();
+                    $args = isset($call[1]) ? $this->resolveServices($call[1], $file) : [];
                 }
 
                 if (!\is_array($args)) {
@@ -462,7 +462,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
             }
         }
 
-        $tags = isset($service['tags']) ? $service['tags'] : array();
+        $tags = isset($service['tags']) ? $service['tags'] : [];
         if (!\is_array($tags)) {
             throw new InvalidArgumentException(sprintf('Parameter "tags" must be an array for service "%s" in %s. Check your YAML syntax.', $id, $file));
         }
@@ -473,7 +473,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
 
         foreach ($tags as $tag) {
             if (!\is_array($tag)) {
-                $tag = array('name' => $tag);
+                $tag = ['name' => $tag];
             }
 
             if (!isset($tag['name'])) {
@@ -511,7 +511,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
 
         if (isset($defaults['bind']) || isset($service['bind'])) {
             // deep clone, to avoid multiple process of the same instance in the passes
-            $bindings = isset($defaults['bind']) ? unserialize(serialize($defaults['bind'])) : array();
+            $bindings = isset($defaults['bind']) ? unserialize(serialize($defaults['bind'])) : [];
 
             if (isset($service['bind'])) {
                 if (!\is_array($service['bind'])) {
@@ -570,7 +570,7 @@ private function parseCallable($callable, $parameter, $id, $file)
             if (false !== strpos($callable, ':') && false === strpos($callable, '::')) {
                 $parts = explode(':', $callable);
 
-                return array($this->resolveServices('@'.$parts[0], $file), $parts[1]);
+                return [$this->resolveServices('@'.$parts[0], $file), $parts[1]];
             }
 
             return $callable;
@@ -578,7 +578,7 @@ private function parseCallable($callable, $parameter, $id, $file)
 
         if (\is_array($callable)) {
             if (isset($callable[0]) && isset($callable[1])) {
-                return array($this->resolveServices($callable[0], $file), $callable[1]);
+                return [$this->resolveServices($callable[0], $file), $callable[1]];
             }
 
             if ('factory' === $parameter && isset($callable[1]) && null === $callable[0]) {
@@ -648,7 +648,7 @@ private function validate($content, $file)
         }
 
         foreach ($content as $namespace => $data) {
-            if (\in_array($namespace, array('imports', 'parameters', 'services'))) {
+            if (\in_array($namespace, ['imports', 'parameters', 'services'])) {
                 continue;
             }
 
@@ -700,10 +700,10 @@ private function resolveServices($value, $file, $isParameter = false)
                 $isLoadingInstanceof = $this->isLoadingInstanceof;
                 $this->isLoadingInstanceof = false;
                 $instanceof = $this->instanceof;
-                $this->instanceof = array();
+                $this->instanceof = [];
 
                 $id = sprintf('.%d_%s', ++$this->anonymousServicesCount, preg_replace('/^.*\\\\/', '', isset($argument['class']) ? $argument['class'] : '').$this->anonymousServicesSuffix);
-                $this->parseDefinition($id, $argument, $file, array());
+                $this->parseDefinition($id, $argument, $file, []);
 
                 if (!$this->container->hasDefinition($id)) {
                     throw new InvalidArgumentException(sprintf('Creating an alias using the tag "!service" is not allowed in "%s".', $file));
@@ -759,12 +759,12 @@ private function resolveServices($value, $file, $isParameter = false)
     private function loadFromExtensions(array $content)
     {
         foreach ($content as $namespace => $values) {
-            if (\in_array($namespace, array('imports', 'parameters', 'services'))) {
+            if (\in_array($namespace, ['imports', 'parameters', 'services'])) {
                 continue;
             }
 
             if (!\is_array($values) && null !== $values) {
-                $values = array();
+                $values = [];
             }
 
             $this->container->loadFromExtension($namespace, $values);
diff --git a/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php b/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
index 3b9b9cfae90d..1a1579338063 100644
--- a/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
+++ b/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
@@ -20,9 +20,9 @@
 class EnvPlaceholderParameterBag extends ParameterBag
 {
     private $envPlaceholderUniquePrefix;
-    private $envPlaceholders = array();
-    private $unusedEnvPlaceholders = array();
-    private $providedTypes = array();
+    private $envPlaceholders = [];
+    private $unusedEnvPlaceholders = [];
+    private $providedTypes = [];
 
     /**
      * {@inheritdoc}
@@ -89,7 +89,7 @@ public function getUnusedEnvPlaceholders(): array
 
     public function clearUnusedEnvPlaceholders()
     {
-        $this->unusedEnvPlaceholders = array();
+        $this->unusedEnvPlaceholders = [];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php b/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
index 91f61b68fdd9..84170577fc8d 100644
--- a/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
+++ b/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
@@ -22,13 +22,13 @@
  */
 class ParameterBag implements ParameterBagInterface
 {
-    protected $parameters = array();
+    protected $parameters = [];
     protected $resolved = false;
 
     /**
      * @param array $parameters An array of parameters
      */
-    public function __construct(array $parameters = array())
+    public function __construct(array $parameters = [])
     {
         $this->add($parameters);
     }
@@ -38,7 +38,7 @@ public function __construct(array $parameters = array())
      */
     public function clear()
     {
-        $this->parameters = array();
+        $this->parameters = [];
     }
 
     /**
@@ -73,7 +73,7 @@ public function get($name)
                 throw new ParameterNotFoundException($name);
             }
 
-            $alternatives = array();
+            $alternatives = [];
             foreach ($this->parameters as $key => $parameterValue) {
                 $lev = levenshtein($name, $key);
                 if ($lev <= \strlen($name) / 3 || false !== strpos($key, $name)) {
@@ -141,7 +141,7 @@ public function resolve()
             return;
         }
 
-        $parameters = array();
+        $parameters = [];
         foreach ($this->parameters as $key => $value) {
             try {
                 $value = $this->resolveValue($value);
@@ -169,10 +169,10 @@ public function resolve()
      * @throws ParameterCircularReferenceException if a circular reference if detected
      * @throws RuntimeException                    when a given parameter has a type problem
      */
-    public function resolveValue($value, array $resolving = array())
+    public function resolveValue($value, array $resolving = [])
     {
         if (\is_array($value)) {
-            $args = array();
+            $args = [];
             foreach ($value as $k => $v) {
                 $args[\is_string($k) ? $this->resolveValue($k, $resolving) : $k] = $this->resolveValue($v, $resolving);
             }
@@ -199,7 +199,7 @@ public function resolveValue($value, array $resolving = array())
      * @throws ParameterCircularReferenceException if a circular reference if detected
      * @throws RuntimeException                    when a given parameter has a type problem
      */
-    public function resolveString($value, array $resolving = array())
+    public function resolveString($value, array $resolving = [])
     {
         // we do this to deal with non string values (Boolean, integer, ...)
         // as the preg_replace_callback throw an exception when trying
@@ -255,7 +255,7 @@ public function escapeValue($value)
         }
 
         if (\is_array($value)) {
-            $result = array();
+            $result = [];
             foreach ($value as $k => $v) {
                 $result[$k] = $this->escapeValue($v);
             }
@@ -276,7 +276,7 @@ public function unescapeValue($value)
         }
 
         if (\is_array($value)) {
-            $result = array();
+            $result = [];
             foreach ($value as $k => $v) {
                 $result[$k] = $this->unescapeValue($v);
             }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
index 366583aba10d..ec3f224a2d92 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
@@ -375,22 +375,22 @@ public function testSomeSpecificArgumentsAreSet()
             ->setAutowired(true)
             // set the 2nd (index 1) argument only: autowire the first and third
             // args are: A, Foo, Dunglas
-            ->setArguments(array(
+            ->setArguments([
                 1 => new Reference('foo'),
-                3 => array('bar'),
-            ));
+                3 => ['bar'],
+            ]);
 
         (new ResolveClassPass())->process($container);
         (new AutowirePass())->process($container);
 
         $definition = $container->getDefinition('multiple');
         $this->assertEquals(
-            array(
+            [
                 new TypedReference(A::class, A::class),
                 new Reference('foo'),
                 new TypedReference(Dunglas::class, Dunglas::class),
-                array('bar'),
-            ),
+                ['bar'],
+            ],
             $definition->getArguments()
         );
     }
@@ -406,7 +406,7 @@ public function testScalarArgsCannotBeAutowired()
         $container->register(A::class);
         $container->register(Dunglas::class);
         $container->register('arg_no_type_hint', __NAMESPACE__.'\MultipleArguments')
-            ->setArguments(array(1 => 'foo'))
+            ->setArguments([1 => 'foo'])
             ->setAutowired(true);
 
         (new ResolveClassPass())->process($container);
@@ -459,12 +459,12 @@ public function testOptionalScalarArgsDontMessUpOrder()
 
         $definition = $container->getDefinition('with_optional_scalar');
         $this->assertEquals(
-            array(
+            [
                 new TypedReference(A::class, A::class),
                 // use the default value
                 'default_val',
                 new TypedReference(Lille::class, Lille::class),
-            ),
+            ],
             $definition->getArguments()
         );
     }
@@ -483,10 +483,10 @@ public function testOptionalScalarArgsNotPassedIfLast()
 
         $definition = $container->getDefinition('with_optional_scalar_last');
         $this->assertEquals(
-            array(
+            [
                 new TypedReference(A::class, A::class),
                 new TypedReference(Lille::class, Lille::class),
-            ),
+            ],
             $definition->getArguments()
         );
     }
@@ -503,7 +503,7 @@ public function testOptionalArgsNoRequiredForCoreClasses()
 
         $definition = $container->getDefinition('foo');
         $this->assertEquals(
-            array('foo.txt'),
+            ['foo.txt'],
             $definition->getArguments()
         );
     }
@@ -520,7 +520,7 @@ public function testSetterInjection()
         $container
             ->register('setter_injection', SetterInjection::class)
             ->setAutowired(true)
-            ->addMethodCall('setWithCallsConfigured', array('manual_arg1', 'manual_arg2'))
+            ->addMethodCall('setWithCallsConfigured', ['manual_arg1', 'manual_arg2'])
         ;
 
         (new ResolveClassPass())->process($container);
@@ -530,18 +530,18 @@ public function testSetterInjection()
         $methodCalls = $container->getDefinition('setter_injection')->getMethodCalls();
 
         $this->assertEquals(
-            array('setWithCallsConfigured', 'setFoo', 'setDependencies', 'setChildMethodWithoutDocBlock'),
+            ['setWithCallsConfigured', 'setFoo', 'setDependencies', 'setChildMethodWithoutDocBlock'],
             array_column($methodCalls, 0)
         );
 
         // test setWithCallsConfigured args
         $this->assertEquals(
-            array('manual_arg1', 'manual_arg2'),
+            ['manual_arg1', 'manual_arg2'],
             $methodCalls[0][1]
         );
         // test setFoo args
         $this->assertEquals(
-            array(new TypedReference(Foo::class, Foo::class)),
+            [new TypedReference(Foo::class, Foo::class)],
             $methodCalls[1][1]
         );
     }
@@ -557,7 +557,7 @@ public function testExplicitMethodInjection()
         $container
             ->register('setter_injection', SetterInjection::class)
             ->setAutowired(true)
-            ->addMethodCall('notASetter', array())
+            ->addMethodCall('notASetter', [])
         ;
 
         (new ResolveClassPass())->process($container);
@@ -567,21 +567,21 @@ public function testExplicitMethodInjection()
         $methodCalls = $container->getDefinition('setter_injection')->getMethodCalls();
 
         $this->assertEquals(
-            array('notASetter', 'setFoo', 'setDependencies', 'setWithCallsConfigured', 'setChildMethodWithoutDocBlock'),
+            ['notASetter', 'setFoo', 'setDependencies', 'setWithCallsConfigured', 'setChildMethodWithoutDocBlock'],
             array_column($methodCalls, 0)
         );
         $this->assertEquals(
-            array(new TypedReference(A::class, A::class)),
+            [new TypedReference(A::class, A::class)],
             $methodCalls[0][1]
         );
     }
 
     public function getCreateResourceTests()
     {
-        return array(
-            array('IdenticalClassResource', true),
-            array('ClassChangedConstructorArgs', false),
-        );
+        return [
+            ['IdenticalClassResource', true],
+            ['ClassChangedConstructorArgs', false],
+        ];
     }
 
     public function testIgnoreServiceWithClassNotExisting()
@@ -667,12 +667,12 @@ public function testEmptyStringIsKept()
         $container->register(Lille::class);
         $container->register('foo', __NAMESPACE__.'\MultipleArgumentsOptionalScalar')
             ->setAutowired(true)
-            ->setArguments(array('', ''));
+            ->setArguments(['', '']);
 
         (new ResolveClassPass())->process($container);
         (new AutowirePass())->process($container);
 
-        $this->assertEquals(array(new TypedReference(A::class, A::class), '', new TypedReference(Lille::class, Lille::class)), $container->getDefinition('foo')->getArguments());
+        $this->assertEquals([new TypedReference(A::class, A::class), '', new TypedReference(Lille::class, Lille::class)], $container->getDefinition('foo')->getArguments());
     }
 
     public function testWithFactory()
@@ -681,13 +681,13 @@ public function testWithFactory()
 
         $container->register(Foo::class);
         $definition = $container->register('a', A::class)
-            ->setFactory(array(A::class, 'create'))
+            ->setFactory([A::class, 'create'])
             ->setAutowired(true);
 
         (new ResolveClassPass())->process($container);
         (new AutowirePass())->process($container);
 
-        $this->assertEquals(array(new TypedReference(Foo::class, Foo::class)), $definition->getArguments());
+        $this->assertEquals([new TypedReference(Foo::class, Foo::class)], $definition->getArguments());
     }
 
     /**
@@ -699,14 +699,14 @@ public function testNotWireableCalls($method, $expectedMsg)
         $container = new ContainerBuilder();
 
         $foo = $container->register('foo', NotWireable::class)->setAutowired(true)
-            ->addMethodCall('setBar', array())
-            ->addMethodCall('
F438
setOptionalNotAutowireable', array())
-            ->addMethodCall('setOptionalNoTypeHint', array())
-            ->addMethodCall('setOptionalArgNoAutowireable', array())
+            ->addMethodCall('setBar', [])
+            ->addMethodCall('setOptionalNotAutowireable', [])
+            ->addMethodCall('setOptionalNoTypeHint', [])
+            ->addMethodCall('setOptionalArgNoAutowireable', [])
         ;
 
         if ($method) {
-            $foo->addMethodCall($method, array());
+            $foo->addMethodCall($method, []);
         }
 
         if (method_exists($this, 'expectException')) {
@@ -723,11 +723,11 @@ public function testNotWireableCalls($method, $expectedMsg)
 
     public function provideNotWireableCalls()
     {
-        return array(
-            array('setNotAutowireable', 'Cannot autowire service "foo": argument "$n" of method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setNotAutowireable()" has type "Symfony\Component\DependencyInjection\Tests\Compiler\NotARealClass" but this class was not found.'),
-            array('setDifferentNamespace', 'Cannot autowire service "foo": argument "$n" of method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setDifferentNamespace()" references class "stdClass" but no such service exists.'),
-            array(null, 'Invalid service "foo": method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setProtectedMethod()" must be public.'),
-        );
+        return [
+            ['setNotAutowireable', 'Cannot autowire service "foo": argument "$n" of method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setNotAutowireable()" has type "Symfony\Component\DependencyInjection\Tests\Compiler\NotARealClass" but this class was not found.'],
+            ['setDifferentNamespace', 'Cannot autowire service "foo": argument "$n" of method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setDifferentNamespace()" references class "stdClass" but no such service exists.'],
+            [null, 'Invalid service "foo": method "Symfony\Component\DependencyInjection\Tests\Compiler\NotWireable::setProtectedMethod()" must be public.'],
+        ];
     }
 
     /**
@@ -740,7 +740,7 @@ public function testSuggestRegisteredServicesWithSimilarCase()
 
         $container->register(LesTilleuls::class, LesTilleuls::class);
         $container->register('foo', NotWireable::class)->setAutowired(true)
-            ->addMethodCall('setNotAutowireableBecauseOfATypo', array())
+            ->addMethodCall('setNotAutowireableBecauseOfATypo', [])
         ;
 
         (new ResolveClassPass())->process($container);
@@ -813,7 +813,7 @@ public function testInlineServicesAreNotCandidates()
         $pass = new AutowirePass();
         $pass->process($container);
 
-        $this->assertSame(array(), $container->getDefinition('autowired')->getArguments());
+        $this->assertSame([], $container->getDefinition('autowired')->getArguments());
     }
 
     public function testAutowireDecorator()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/DecoratorServicePassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/DecoratorServicePassTest.php
index 3cad553d82f9..d8d7587c8d42 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/DecoratorServicePassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/DecoratorServicePassTest.php
@@ -130,18 +130,18 @@ public function testProcessMovesTagsFromDecoratedDefinitionToDecoratingDefinitio
         $container = new ContainerBuilder();
         $container
             ->register('foo')
-            ->setTags(array('bar' => array('attr' => 'baz')))
+            ->setTags(['bar' => ['attr' => 'baz']])
         ;
         $container
             ->register('baz')
-            ->setTags(array('foobar' => array('attr' => 'bar')))
+            ->setTags(['foobar' => ['attr' => 'bar']])
             ->setDecoratedService('foo')
         ;
 
         $this->process($container);
 
         $this->assertEmpty($container->getDefinition('baz.inner')->getTags());
-        $this->assertEquals(array('bar' => array('attr' => 'baz'), 'foobar' => array('attr' => 'bar')), $container->getDefinition('baz')->getTags());
+        $this->assertEquals(['bar' => ['attr' => 'baz'], 'foobar' => ['attr' => 'bar']], $container->getDefinition('baz')->getTags());
     }
 
     public function testProcessMovesTagsFromDecoratedDefinitionToDecoratingDefinitionMultipleTimes()
@@ -150,7 +150,7 @@ public function testProcessMovesTagsFromDecoratedDefinitionToDecoratingDefinitio
         $container
             ->register('foo')
             ->setPublic(true)
-            ->setTags(array('bar' => array('attr' => 'baz')))
+            ->setTags(['bar' => ['attr' => 'baz']])
         ;
         $container
             ->register('deco1')
@@ -164,7 +164,7 @@ public function testProcessMovesTagsFromDecoratedDefinitionToDecoratingDefinitio
         $this->process($container);
 
         $this->assertEmpty($container->getDefinition('deco1')->getTags());
-        $this->assertEquals(array('bar' => array('attr' => 'baz')), $container->getDefinition('deco2')->getTags());
+        $this->assertEquals(['bar' => ['attr' => 'baz']], $container->getDefinition('deco2')->getTags());
     }
 
     protected function process(ContainerBuilder $container)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
index 2db0aaa127d2..adc6498daddc 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
@@ -33,7 +33,7 @@ public function testProcess()
 
         $container
             ->register('service')
-            ->setArguments(array(new Reference('inlinable.service')))
+            ->setArguments([new Reference('inlinable.service')])
         ;
 
         $this->process($container);
@@ -54,7 +54,7 @@ public function testProcessDoesNotInlinesWhenAliasedServiceIsShared()
 
         $container
             ->register('service')
-            ->setArguments(array($ref = new Reference('foo')))
+            ->setArguments([$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -79,7 +79,7 @@ public function testProcessDoesInlineNonSharedService()
 
         $container
             ->register('service')
-            ->setArguments(array(new Reference('foo'), $ref = new Reference('moo'), new Reference('bar')))
+            ->setArguments([new Reference('foo'), $ref = new Reference('moo'), new Reference('bar')])
         ;
 
         $this->process($container);
@@ -103,7 +103,7 @@ public function testProcessDoesNotInlineMixedServicesLoop()
         $container
             ->register('bar')
             ->setPublic(false)
-            ->addMethodCall('setFoo', array(new Reference('foo')))
+            ->addMethodCall('setFoo', [new Reference('foo')])
         ;
 
         $this->process($container);
@@ -126,7 +126,7 @@ public function testProcessThrowsOnNonSharedLoops()
         $container
             ->register('bar')
             ->setShared(false)
-            ->addMethodCall('setFoo', array(new Reference('foo')))
+            ->addMethodCall('setFoo', [new Reference('foo')])
         ;
 
         $this->process($container);
@@ -173,7 +173,7 @@ public function testProcessInlinesIfMultipleReferencesButAllFromTheSameDefinitio
         $b = $container
             ->register('b')
             ->addArgument(new Reference('a'))
-            ->addArgument(new Definition(null, array(new Reference('a'))))
+            ->addArgument(new Definition(null, [new Reference('a')]))
         ;
 
         $this->process($container);
@@ -193,14 +193,14 @@ public function testProcessInlinesPrivateFactoryReference()
         $b = $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                 $ref = new Reference('b'),
-            ));
+            ]);
 
         $this->process($container);
 
@@ -217,15 +217,15 @@ public function testProcessDoesNotInlinePrivateFactoryIfReferencedMultipleTimesW
         $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                     $ref1 = new Reference('b'),
                     $ref2 = new Reference('b'),
-                ))
+                ])
         ;
         $this->process($container);
 
@@ -243,19 +243,19 @@ public function testProcessDoesNotInlineReferenceWhenUsedByInlineFactory()
         $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $inlineFactory = new Definition();
         $inlineFactory->setPublic(false);
-        $inlineFactory->setFactory(array(new Reference('b'), 'b'));
+        $inlineFactory->setFactory([new Reference('b'), 'b']);
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                     $ref = new Reference('b'),
                     $inlineFactory,
-                ))
+                ])
         ;
         $this->process($container);
 
@@ -274,7 +274,7 @@ public function testProcessDoesNotInlineWhenServiceIsPrivateButLazy()
 
         $container
             ->register('service')
-            ->setArguments(array($ref = new Reference('foo')))
+            ->setArguments([$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -289,7 +289,7 @@ public function testProcessDoesNotInlineWhenServiceReferencesItself()
         $container
             ->register('foo')
             ->setPublic(false)
-            ->addMethodCall('foo', array($ref = new Reference('foo')))
+            ->addMethodCall('foo', [$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -307,11 +307,11 @@ public function testProcessDoesNotSetLazyArgumentValuesAfterInlining()
         ;
         $container
             ->register('service-closure')
-            ->setArguments(array(new ServiceClosureArgument(new Reference('inline'))))
+            ->setArguments([new ServiceClosureArgument(new Reference('inline'))])
         ;
         $container
             ->register('iterator')
-            ->setArguments(array(new IteratorArgument(array(new Reference('inline')))))
+            ->setArguments([new IteratorArgument([new Reference('inline')])])
         ;
 
         $this->process($container);
@@ -327,7 +327,7 @@ public function testProcessDoesNotSetLazyArgumentValuesAfterInlining()
 
     protected function process(ContainerBuilder $container)
     {
-        $repeatedPass = new RepeatedPass(array(new AnalyzeServiceReferencesPass(), new InlineServiceDefinitionsPass()));
+        $repeatedPass = new RepeatedPass([new AnalyzeServiceReferencesPass(), new InlineServiceDefinitionsPass()]);
         $repeatedPass->process($container);
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php
index 489cc866e40f..b9f9d7bf3620 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php
@@ -99,7 +99,7 @@ public function testProcessInlinesWhenThereAreMultipleReferencesButFromTheSameDe
         $container
             ->register('a', '\stdClass')
             ->addArgument(new Reference('b'))
-            ->addMethodCall('setC', array(new Reference('c')))
+            ->addMethodCall('setC', [new Reference('c')])
             ->setPublic(true)
         ;
 
@@ -158,8 +158,8 @@ public function testYamlContainerCompiles($directory, $actualServiceId, $expecte
         $expectedService = $container->getDefinition($expectedServiceId);
 
         // reset changes, we don't care if these differ
-        $actualService->setChanges(array());
-        $expectedService->setChanges(array());
+        $actualService->setChanges([]);
+        $expectedService->setChanges([]);
 
         $this->assertEquals($expectedService, $actualService);
     }
@@ -168,71 +168,71 @@ public function getYamlCompileTests()
     {
         $container = new ContainerBuilder();
         $container->registerForAutoconfiguration(IntegrationTestStub::class);
-        yield array(
+        yield [
             'autoconfigure_child_not_applied',
             'child_service',
             'child_service_expected',
             $container,
-        );
+        ];
 
         $container = new ContainerBuilder();
         $container->registerForAutoconfiguration(IntegrationTestStub::class);
-        yield array(
+        yield [
             'autoconfigure_parent_child',
             'child_service',
             'child_service_expected',
             $container,
-        );
+        ];
 
         $container = new ContainerBuilder();
         $container->registerForAutoconfiguration(IntegrationTestStub::class)
             ->addTag('from_autoconfigure');
-        yield array(
+        yield [
             'autoconfigure_parent_child_tags',
             'child_service',
             'child_service_expected',
             $container,
-        );
+        ];
 
-        yield array(
+        yield [
             'child_parent',
             'child_service',
             'child_service_expected',
-        );
+        ];
 
-        yield array(
+        yield [
             'defaults_child_tags',
             'child_service',
             'child_service_expected',
-        );
+        ];
 
-        yield array(
+        yield [
             'defaults_instanceof_importance',
             'main_service',
             'main_service_expected',
-        );
+        ];
 
-        yield array(
+        yield [
             'defaults_parent_child',
             'child_service',
             'child_service_expected',
-        );
+        ];
 
-        yield array(
+        yield [
             'instanceof_parent_child',
             'child_service',
             'child_service_expected',
-        );
+        ];
 
         $container = new ContainerBuilder();
         $container->registerForAutoconfiguration(IntegrationTestStub::class)
-            ->addMethodCall('setSunshine', array('supernova'));
-        yield array(
+            ->addMethodCall('setSunshine', ['supernova']);
+        yield [
             'instanceof_and_calls',
             'main_service',
             'main_service_expected',
             $container,
-        );
+        ];
     }
 }
 
@@ -240,7 +240,7 @@ class ServiceSubscriberStub implements ServiceSubscriberInterface
 {
     public static function getSubscribedServices()
     {
-        return array();
+        return [];
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PassConfigTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PassConfigTest.php
index 43323dae89cd..f8556d3e06f0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PassConfigTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PassConfigTest.php
@@ -39,11 +39,11 @@ public function testPassOrdering()
     public function testPassOrderingWithoutPasses()
     {
         $config = new PassConfig();
-        $config->setBeforeOptimizationPasses(array());
-        $config->setAfterRemovingPasses(array());
-        $config->setBeforeRemovingPasses(array());
-        $config->setOptimizationPasses(array());
-        $config->setRemovingPasses(array());
+        $config->setBeforeOptimizationPasses([]);
+        $config->setAfterRemovingPasses([]);
+        $config->setBeforeRemovingPasses([]);
+        $config->setOptimizationPasses([]);
+        $config->setRemovingPasses([]);
 
         $this->assertEmpty($config->getBeforeOptimizationPasses());
         $this->assertEmpty($config->getAfterRemovingPasses());
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
index 715f07aa5413..57ca9af42712 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
@@ -83,7 +83,7 @@ public function testWithEmptyArray()
     {
         $container = new ContainerBuilder();
         $priorityTaggedServiceTraitImplementation = new PriorityTaggedServiceTraitImplementation();
-        $this->assertEquals(array(), $priorityTaggedServiceTraitImplementation->test('my_custom_tag', $container));
+        $this->assertEquals([], $priorityTaggedServiceTraitImplementation->test('my_custom_tag', $container));
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
index e330017bcd8e..73fd8f79da76 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
@@ -28,19 +28,19 @@ public function testSimpleProcessor()
         $this->assertTrue($container->has('container.env_var_processors_locator'));
         $this->assertInstanceOf(SimpleProcessor::class, $container->get('container.env_var_processors_locator')->get('foo'));
 
-        $expected = array(
-            'foo' => array('string'),
-            'base64' => array('string'),
-            'bool' => array('bool'),
-            'const' => array('bool', 'int', 'float', 'string', 'array'),
-            'csv' => array('array'),
-            'file' => array('string'),
-            'float' => array('float'),
-            'int' => array('int'),
-            'json' => array('array'),
-            'resolve' => array('string'),
-            'string' => array('string'),
-        );
+        $expected = [
+            'foo' => ['string'],
+            'base64' => ['string'],
+            'bool' => ['bool'],
+            'const' => ['bool', 'int', 'float', 'string', 'array'],
+            'csv' => ['array'],
+            'file' => ['string'],
+            'float' => ['float'],
+            'int' => ['int'],
+            'json' => ['array'],
+            'resolve' => ['string'],
+            'string' => ['string'],
+        ];
 
         $this->assertSame($expected, $container->getParameterBag()->getProvidedTypes());
     }
@@ -76,7 +76,7 @@ public function getEnv($prefix, $name, \Closure $getEnv)
 
     public static function getProvidedTypes()
     {
-        return array('foo' => 'string');
+        return ['foo' => 'string'];
     }
 }
 
@@ -84,6 +84,6 @@ class BadProcessor extends SimpleProcessor
 {
     public static function getProvidedTypes()
     {
-        return array('foo' => 'string|foo');
+        return ['foo' => 'string|foo'];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
index f7314948aeef..75342aa70c7e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
@@ -53,7 +53,7 @@ public function testInvalidAttributes()
         $container = new ContainerBuilder();
 
         $container->register('foo', TestServiceSubscriber::class)
-            ->addTag('container.service_subscriber', array('bar' => '123'))
+            ->addTag('container.service_subscriber', ['bar' => '123'])
         ;
 
         (new RegisterServiceSubscribersPass())->process($container);
@@ -78,12 +78,12 @@ public function testNoAttributes()
         $this->assertFalse($locator->isPublic());
         $this->assertSame(ServiceLocator::class, $locator->getClass());
 
-        $expected = array(
+        $expected = [
             TestServiceSubscriber::class => new ServiceClosureArgument(new TypedReference(TestServiceSubscriber::class, TestServiceSubscriber::class)),
             CustomDefinition::class => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             'bar' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class)),
             'baz' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
-        );
+        ];
 
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
@@ -95,8 +95,8 @@ public function testWithAttributes()
         $container->register('foo', TestServiceSubscriber::class)
             ->setAutowired(true)
             ->addArgument(new Reference(PsrContainerInterface::class))
-            ->addTag('container.service_subscriber', array('key' => 'bar', 'id' => 'bar'))
-            ->addTag('container.service_subscriber', array('key' => 'bar', 'id' => 'baz')) // should be ignored: the first wins
+            ->addTag('container.service_subscriber', ['key' => 'bar', 'id' => 'bar'])
+            ->addTag('container.service_subscriber', ['key' => 'bar', 'id' => 'baz']) // should be ignored: the first wins
         ;
 
         (new RegisterServiceSubscribersPass())->process($container);
@@ -108,12 +108,12 @@ public function testWithAttributes()
         $this->assertFalse($locator->isPublic());
         $this->assertSame(ServiceLocator::class, $locator->getClass());
 
-        $expected = array(
+        $expected = [
             TestServiceSubscriber::class => new ServiceClosureArgument(new TypedReference(TestServiceSubscriber::class, TestServiceSubscriber::class)),
             CustomDefinition::class => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             'bar' => new ServiceClosureArgument(new TypedReference('bar', CustomDefinition::class)),
             'baz' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
-        );
+        ];
 
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
@@ -128,10 +128,10 @@ public function testExtraServiceSubscriber()
         $container->register('foo_service', TestServiceSubscriber::class)
             ->setAutowired(true)
             ->addArgument(new Reference(PsrContainerInterface::class))
-            ->addTag('container.service_subscriber', array(
+            ->addTag('container.service_subscriber', [
                 'key' => 'test',
                 'id' => TestServiceSubscriber::class,
-            ))
+            ])
         ;
         $container->register(TestServiceSubscriber::class, TestServiceSubscriber::class);
         $container->compile();
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
index a1630691eada..07c1abdf5d5e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveChildDefinitionsPassTest.php
@@ -21,7 +21,7 @@ class ResolveChildDefinitionsPassTest extends TestCase
     public function testProcess()
     {
         $container = new ContainerBuilder();
-        $container->register('parent', 'foo')->setArguments(array('moo', 'b'))->setProperty('foo', 'moo');
+        $container->register('parent', 'foo')->setArguments(['moo', 'b'])->setProperty('foo', 'moo');
         $container->setDefinition('child', new ChildDefinition('parent'))
             ->replaceArgument(0, 'a')
             ->setProperty('foo', 'bar')
@@ -33,8 +33,8 @@ public function testProcess()
         $def = $container->getDefinition('child');
         $this->assertNotInstanceOf(ChildDefinition::class, $def);
         $this->assertEquals('bar', $def->getClass());
-        $this->assertEquals(array('a', 'b'), $def->getArguments());
-        $this->assertEquals(array('foo' => 'bar'), $def->getProperties());
+        $this->assertEquals(['a', 'b'], $def->getArguments());
+        $this->assertEquals(['foo' => 'bar'], $def->getProperties());
     }
 
     public function testProcessAppendsMethodCallsAlways()
@@ -43,21 +43,21 @@ public function testProcessAppendsMethodCallsAlways()
 
         $container
             ->register('parent')
-            ->addMethodCall('foo', array('bar'))
+            ->addMethodCall('foo', ['bar'])
         ;
 
         $container
             ->setDefinition('child', new ChildDefinition('parent'))
-            ->addMethodCall('bar', array('foo'))
+            ->addMethodCall('bar', ['foo'])
         ;
 
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertEquals(array(
-            array('foo', array('bar')),
-            array('bar', array('foo')),
-        ), $def->getMethodCalls());
+        $this->assertEquals([
+            ['foo', ['bar']],
+            ['bar', ['foo']],
+        ], $def->getMethodCalls());
     }
 
     public function testProcessDoesNotCopyAbstract()
@@ -114,7 +114,7 @@ public function testProcessDoesNotCopyTags()
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertEquals(array(), $def->getTags());
+        $this->assertEquals([], $def->getTags());
     }
 
     public function testProcessDoesNotCopyDecoratedService()
@@ -161,7 +161,7 @@ public function testProcessHandlesMultipleInheritance()
 
         $container
             ->register('parent', 'foo')
-            ->setArguments(array('foo', 'bar', 'c'))
+            ->setArguments(['foo', 'bar', 'c'])
         ;
 
         $container
@@ -177,7 +177,7 @@ public function testProcessHandlesMultipleInheritance()
         $this->process($container);
 
         $def = $container->getDefinition('child2');
-        $this->assertEquals(array('a', 'b', 'c'), $def->getArguments());
+        $this->assertEquals(['a', 'b', 'c'], $def->getArguments());
         $this->assertEquals('foo', $def->getClass());
     }
 
@@ -250,10 +250,10 @@ public function testDeepDefinitionsResolving()
         $container->register('parent', 'parentClass');
         $container->register('sibling', 'siblingClass')
             ->setConfigurator(new ChildDefinition('parent'), 'foo')
-            ->setFactory(array(new ChildDefinition('parent'), 'foo'))
+            ->setFactory([new ChildDefinition('parent'), 'foo'])
             ->addArgument(new ChildDefinition('parent'))
             ->setProperty('prop', new ChildDefinition('parent'))
-            ->addMethodCall('meth', array(new ChildDefinition('parent')))
+            ->addMethodCall('meth', [new ChildDefinition('parent')])
         ;
 
         $this->process($container);
@@ -291,7 +291,7 @@ public function testSetDecoratedServiceOnServiceHasParent()
 
         $this->process($container);
 
-        $this->assertEquals(array('foo', 'foo_inner', 5), $container->getDefinition('child1')->getDecoratedService());
+        $this->assertEquals(['foo', 'foo_inner', 5], $container->getDefinition('child1')->getDecoratedService());
     }
 
     public function testDecoratedServiceCopiesDeprecatedStatusFromParent()
@@ -342,17 +342,17 @@ public function testProcessSetsArguments()
     {
         $container = new ContainerBuilder();
 
-        $container->register('parent', 'ParentClass')->setArguments(array(0));
-        $container->setDefinition('child', (new ChildDefinition('parent'))->setArguments(array(
+        $container->register('parent', 'ParentClass')->setArguments([0]);
+        $container->setDefinition('child', (new ChildDefinition('parent'))->setArguments([
             1,
             'index_0' => 2,
             'foo' => 3,
-        )));
+        ]));
 
         $this->process($container);
 
         $def = $container->getDefinition('child');
-        $this->assertSame(array(2, 1, 'foo' => 3), $def->getArguments());
+        $this->assertSame([2, 1, 'foo' => 3], $def->getArguments());
     }
 
     public function testBindings()
@@ -360,20 +360,20 @@ public function testBindings()
         $container = new ContainerBuilder();
 
         $container->register('parent', 'stdClass')
-            ->setBindings(array('a' => '1', 'b' => '2'))
+            ->setBindings(['a' => '1', 'b' => '2'])
         ;
 
         $child = $container->setDefinition('child', new ChildDefinition('parent'))
-            ->setBindings(array('b' => 'B', 'c' => 'C'))
+            ->setBindings(['b' => 'B', 'c' => 'C'])
         ;
 
         $this->process($container);
 
-        $bindings = array();
+        $bindings = [];
         foreach ($container->getDefinition('child')->getBindings() as $k => $v) {
             $bindings[$k] = $v->getValues()[0];
         }
-        $this->assertEquals(array('b' => 'B', 'c' => 'C', 'a' => '1'), $bindings);
+        $this->assertEquals(['b' => 'B', 'c' => 'C', 'a' => '1'], $bindings);
     }
 
     public function testSetAutoconfiguredOnServiceIsParent()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
index 59472c8754bb..6bc0043c4285 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
@@ -207,21 +207,21 @@ public function testProcessForAutoconfiguredCalls()
     {
         $container = new ContainerBuilder();
 
-        $expected = array(
-            array('setFoo', array(
+        $expected = [
+            ['setFoo', [
                 'plain_value',
                 '%some_parameter%',
-            )),
-            array('callBar', array()),
-            array('isBaz', array()),
-        );
+            ]],
+            ['callBar', []],
+            ['isBaz', []],
+        ];
 
         $container->registerForAutoconfiguration(parent::class)->addMethodCall('setFoo', $expected[0][1]);
         $container->registerForAutoconfiguration(self::class)->addMethodCall('callBar');
 
         $def = $container->register('foo', self::class)->setAutoconfigured(true)->addMethodCall('isBaz');
         $this->assertEquals(
-            array(array('isBaz', array())),
+            [['isBaz', []]],
             $def->getMethodCalls(),
             'Definition shouldn\'t have only one method call.'
         );
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveNamedArgumentsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveNamedArgumentsPassTest.php
index 400d1f9028ec..024f7adb4653 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveNamedArgumentsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveNamedArgumentsPassTest.php
@@ -181,26 +181,26 @@ public function testVariadics()
 
         $definition = $container->register(NamedArgumentsVariadicsDummy::class, NamedArgumentsVariadicsDummy::class);
         $definition->setArguments(
-            array(
+            [
                 '$class' => new \stdClass(),
-                '$variadics' => array(
+                '$variadics' => [
                     new Reference('foo'),
                     new Reference('bar'),
                     new Reference('baz'),
-                ),
-            )
+                ],
+            ]
         );
 
         $pass = new ResolveNamedArgumentsPass();
         $pass->process($container);
 
         $this->assertEquals(
-            array(
+            [
                 0 => new \stdClass(),
                 1 => new Reference('foo'),
                 2 => new Reference('bar'),
                 3 => new Reference('baz'),
-            ),
+            ],
             $definition->getArguments()
         );
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
index 6a877233c9a4..fa51898b540b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
@@ -29,12 +29,12 @@ public function testEnvsAreValidatedInConfig()
         $container->setParameter('env(NULLED)', null);
         $container->setParameter('env(FLOATISH)', 3.2);
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', $expected = array(
+        $container->prependExtensionConfig('env_extension', $expected = [
             'scalar_node' => '%env(NULLED)%',
             'scalar_node_not_empty' => '%env(FLOATISH)%',
             'int_node' => '%env(int:FOO)%',
             'float_node' => '%env(float:BAR)%',
-        ));
+        ]);
 
         $this->doProcess($container);
 
@@ -46,10 +46,10 @@ public function testDefaultEnvWithoutPrefixIsValidatedInConfig()
         $container = new ContainerBuilder();
         $container->setParameter('env(FLOATISH)', 3.2);
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', $expected = array(
+        $container->prependExtensionConfig('env_extension', $expected = [
             'float_node' => '%env(FLOATISH)%',
             'string_node' => '%env(UNDEFINED)%',
-        ));
+        ]);
 
         $this->doProcess($container);
 
@@ -64,9 +64,9 @@ public function testEnvsAreValidatedInConfigWithInvalidPlaceholder()
     {
         $container = new ContainerBuilder();
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', $expected = array(
+        $container->prependExtensionConfig('env_extension', $expected = [
             'bool_node' => '%env(const:BAZ)%',
-        ));
+        ]);
 
         $this->doProcess($container);
 
@@ -81,9 +81,9 @@ public function testInvalidEnvInConfig()
     {
         $container = new ContainerBuilder();
         $container->registerExtension(new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
+        $container->prependExtensionConfig('env_extension', [
             'int_node' => '%env(json:FOO)%',
-        ));
+        ]);
 
         $this->doProcess($container);
     }
@@ -97,9 +97,9 @@ public function testNulledEnvInConfig()
         $container = new ContainerBuilder();
         $container->setParameter('env(NULLED)', null);
         $container->registerExtension(new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
+        $container->prependExtensionConfig('env_extension', [
             'int_node' => '%env(NULLED)%',
-        ));
+        ]);
 
         $this->doProcess($container);
     }
@@ -108,23 +108,23 @@ public function testValidateEnvOnMerge()
     {
         $container = new ContainerBuilder();
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
+        $container->prependExtensionConfig('env_extension', [
             'int_node' => '%env(int:const:FOO)%',
             'bool_node' => true,
-        ));
-        $container->prependExtensionConfig('env_extension', array(
+        ]);
+        $container->prependExtensionConfig('env_extension', [
             'int_node' => '%env(int:BAR)%',
             'bool_node' => '%env(bool:int:BAZ)%',
             'scalar_node' => '%env(BAZ)%',
-        ));
+        ]);
 
         $this->doProcess($container);
 
-        $expected = array(
+        $expected = [
             'int_node' => '%env(int:const:FOO)%',
             'bool_node' => true,
             'scalar_node' => '%env(BAZ)%',
-        );
+        ];
 
         $this->assertSame($expected, $container->resolveEnvPlaceholders($ext->getConfig()));
     }
@@ -133,13 +133,13 @@ public function testConcatenatedEnvInConfig()
     {
         $container = new ContainerBuilder();
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
+        $container->prependExtensionConfig('env_extension', [
             'scalar_node' => $expected = 'foo %env(BAR)% baz',
-        ));
+        ]);
 
         $this->doProcess($container);
 
-        $this->assertSame(array('scalar_node' => $expected), $container->resolveEnvPlaceholders($ext->getConfig()));
+        $this->assertSame(['scalar_node' => $expected], $container->resolveEnvPlaceholders($ext->getConfig()));
     }
 
     /**
@@ -150,9 +150,9 @@ public function testEnvIsIncompatibleWithEnumNode()
     {
         $container = new ContainerBuilder();
         $container->registerExtension(new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
+        $container->prependExtensionConfig('env_extension', [
             'enum_node' => '%env(FOO)%',
-        ));
+        ]);
 
         $this->doProcess($container);
     }
@@ -165,9 +165,9 @@ public function testEnvIsIncompatibleWithArrayNode()
     {
         $container = new ContainerBuilder();
         $container->registerExtension(new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
+        $container->prependExtensionConfig('env_extension', [
             'simple_array_node' => '%env(json:FOO)%',
-        ));
+        ]);
 
         $this->doProcess($container);
     }
@@ -176,22 +176,22 @@ public function testNormalizedEnvIsCompatibleWithArrayNode()
     {
         $container = new ContainerBuilder();
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
+        $container->prependExtensionConfig('env_extension', [
             'array_node' => $expected = '%env(CHILD)%',
-        ));
+        ]);
 
         $this->doProcess($container);
 
-        $this->assertSame(array('array_node' => array('child_node' => $expected)), $container->resolveEnvPlaceholders($ext->getConfig()));
+        $this->assertSame(['array_node' => ['child_node' => $expected]], $container->resolveEnvPlaceholders($ext->getConfig()));
     }
 
     public function testEnvIsNotUnset()
     {
         $container = new ContainerBuilder();
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', $expected = array(
-            'array_node' => array('int_unset_at_zero' => '%env(int:CHILD)%'),
-        ));
+        $container->prependExtensionConfig('env_extension', $expected = [
+            'array_node' => ['int_unset_at_zero' => '%env(int:CHILD)%'],
+        ]);
 
         $this->doProcess($container);
 
@@ -202,9 +202,9 @@ public function testEmptyEnvWhichCannotBeEmptyForScalarNode(): void
     {
         $container = new ContainerBuilder();
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', $expected = array(
+        $container->prependExtensionConfig('env_extension', $expected = [
             'scalar_node_not_empty' => '%env(SOME)%',
-        ));
+        ]);
 
         $this->doProcess($container);
 
@@ -215,9 +215,9 @@ public function testEnvWithVariableNode(): void
     {
         $container = new ContainerBuilder();
         $container->registerExtension($ext = new EnvExtension());
-        $container->prependExtensionConfig('env_extension', $expected = array(
+        $container->prependExtensionConfig('env_extension', $expected = [
             'variable_node' => '%env(SOME)%',
-        ));
+        ]);
 
         $this->doProcess($container);
 
@@ -239,8 +239,8 @@ public function testEmptyConfigFromMoreThanOneSource()
     {
         $container = new ContainerBuilder();
         $container->registerExtension(new EnvExtension(new ConfigurationWithArrayNodeRequiringOneElement()));
-        $container->loadFromExtension('env_extension', array());
-        $container->loadFromExtension('env_extension', array());
+        $container->loadFromExtension('env_extension', []);
+        $container->loadFromExtension('env_extension', []);
 
         $this->doProcess($container);
 
@@ -253,9 +253,9 @@ public function testDiscardedEnvInConfig(): void
         $container->setParameter('env(BOOLISH)', '1');
         $container->setParameter('boolish', '%env(BOOLISH)%');
         $container->registerExtension(new EnvExtension());
-        $container->prependExtensionConfig('env_extension', array(
-            'array_node' => array('bool_force_cast' => '%boolish%'),
-        ));
+        $container->prependExtensionConfig('env_extension', [
+            'array_node' => ['bool_force_cast' => '%boolish%'],
+        ]);
 
         $container->compile(true);
 
@@ -286,7 +286,7 @@ public function getConfigTreeBuilder()
                 ->arrayNode('array_node')
                     ->beforeNormalization()
                         ->ifTrue(function ($value) { return !\is_array($value); })
-                        ->then(function ($value) { return array('child_node' => $value); })
+                        ->then(function ($value) { return ['child_node' => $value]; })
                     ->end()
                     ->beforeNormalization()
                         ->ifArray()
@@ -310,7 +310,7 @@ public function getConfigTreeBuilder()
                     ->end()
                 ->end()
                 ->arrayNode('simple_array_node')->end()
-                ->enumNode('enum_node')->values(array('a', 'b'))->end()
+                ->enumNode('enum_node')->values(['a', 'b'])->end()
                 ->variableNode('variable_node')->end()
                 ->scalarNode('string_node')
                     ->validate()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
index 82a4921e7c06..950681e0bd6b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
@@ -62,10 +62,10 @@ public function testDefaultRegisteredDefinitions()
     public function testDefinitions()
     {
         $builder = new ContainerBuilder();
-        $definitions = array(
+        $definitions = [
             'foo' => new Definition('Bar\FooClass'),
             'bar' => new Definition('BarClass'),
-        );
+        ];
         $builder->setDefinitions($definitions);
         $this->assertEquals($definitions, $builder->getDefinitions(), '->setDefinitions() sets the service definitions');
         $this->assertTrue($builder->hasDefinition('foo'), '->hasDefinition() returns true if a service definition exists');
@@ -75,7 +75,7 @@ public function testDefinitions()
         $this->assertEquals($foo, $builder->getDefinition('foobar'), '->getDefinition() returns a service definition if defined');
         $this->assertSame($builder->setDefinition('foobar', $foo = new Definition('FooBarClass')), $foo, '->setDefinition() implements a fluid interface by returning the service reference');
 
-        $builder->addDefinitions($defs = array('foobar' => new Definition('FooBarClass')));
+        $builder->addDefinitions($defs = ['foobar' => new Definition('FooBarClass')]);
         $this->assertEquals(array_merge($definitions, $defs), $builder->getDefinitions(), '->addDefinitions() adds the service definitions');
 
         try {
@@ -150,7 +150,7 @@ public function testGetReturnsNullIfServiceDoesNotExistAndInvalidReferenceIsUsed
     public function testGetThrowsCircularReferenceExceptionIfServiceHasReferenceToItself()
     {
         $builder = new ContainerBuilder();
-        $builder->register('baz', 'stdClass')->setArguments(array(new Reference('baz')));
+        $builder->register('baz', 'stdClass')->setArguments([new Reference('baz')]);
         $builder->get('baz');
     }
 
@@ -221,13 +221,13 @@ public function testGetServiceIds()
         $builder->bar = $bar = new \stdClass();
         $builder->register('bar', 'stdClass');
         $this->assertEquals(
-            array(
+            [
                 'service_container',
                 'foo',
                 'bar',
                 'Psr\Container\ContainerInterface',
                 'Symfony\Component\DependencyInjection\ContainerInterface',
-            ),
+            ],
             $builder->getServiceIds(),
             '->getServiceIds() returns all defined service ids'
         );
@@ -284,7 +284,7 @@ public function testGetAliases()
     public function testSetAliases()
     {
         $builder = new ContainerBuilder();
-        $builder->setAliases(array('bar' => 'foo', 'foobar' => 'foo'));
+        $builder->setAliases(['bar' => 'foo', 'foobar' => 'foo']);
 
         $aliases = $builder->getAliases();
         $this->assertArrayHasKey('bar', $aliases);
@@ -294,8 +294,8 @@ public function testSetAliases()
     public function testAddAliases()
     {
         $builder = new ContainerBuilder();
-        $builder->setAliases(array('bar' => 'foo'));
-        $builder->addAliases(array('foobar' => 'foo'));
+        $builder->setAliases(['bar' => 'foo']);
+        $builder->addAliases(['foobar' => 'foo']);
 
         $aliases = $builder->getAliases();
         $this->assertArrayHasKey('bar', $aliases);
@@ -317,7 +317,7 @@ public function testAliasesKeepInvalidBehavior()
         $builder = new ContainerBuilder();
 
         $aliased = new Definition('stdClass');
-        $aliased->addMethodCall('setBar', array(new Reference('bar', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
+        $aliased->addMethodCall('setBar', [new Reference('bar', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)]);
         $builder->setDefinition('aliased', $aliased);
         $builder->setAlias('alias', 'aliased');
 
@@ -373,18 +373,18 @@ public function testCreateServiceArguments()
     {
         $builder = new ContainerBuilder();
         $builder->register('bar', 'stdClass');
-        $builder->register('foo1', 'Bar\FooClass')->addArgument(array('foo' => '%value%', '%value%' => 'foo', new Reference('bar'), '%%unescape_it%%'));
+        $builder->register('foo1', 'Bar\FooClass')->addArgument(['foo' => '%value%', '%value%' => 'foo', new Reference('bar'), '%%unescape_it%%']);
         $builder->setParameter('value', 'bar');
-        $this->assertEquals(array('foo' => 'bar', 'bar' => 'foo', $builder->get('bar'), '%unescape_it%'), $builder->get('foo1')->arguments, '->createService() replaces parameters and service references in the arguments provided by the service definition');
+        $this->assertEquals(['foo' => 'bar', 'bar' => 'foo', $builder->get('bar'), '%unescape_it%'], $builder->get('foo1')->arguments, '->createService() replaces parameters and service references in the arguments provided by the service definition');
     }
 
     public function testCreateServiceFactory()
     {
         $builder = new ContainerBuilder();
         $builder->register('foo', 'Bar\FooClass')->setFactory('Bar\FooClass::getInstance');
-        $builder->register('qux', 'Bar\FooClass')->setFactory(array('Bar\FooClass', 'getInstance'));
-        $builder->register('bar', 'Bar\FooClass')->setFactory(array(new Definition('Bar\FooClass'), 'getInstance'));
-        $builder->register('baz', 'Bar\FooClass')->setFactory(array(new Reference('bar'), 'getInstance'));
+        $builder->register('qux', 'Bar\FooClass')->setFactory(['Bar\FooClass', 'getInstance']);
+        $builder->register('bar', 'Bar\FooClass')->setFactory([new Definition('Bar\FooClass'), 'getInstance']);
+        $builder->register('baz', 'Bar\FooClass')->setFactory([new Reference('bar'), 'getInstance']);
 
         $this->assertTrue($builder->get('foo')->called, '->createService() calls the factory method to create the service instance');
         $this->assertTrue($builder->get('qux')->called, '->createService() calls the factory method to create the service instance');
@@ -396,38 +396,38 @@ public function testCreateServiceMethodCalls()
     {
         $builder = new ContainerBuilder();
         $builder->register('bar', 'stdClass');
-        $builder->register('foo1', 'Bar\FooClass')->addMethodCall('setBar', array(array('%value%', new Reference('bar'))));
+        $builder->register('foo1', 'Bar\FooClass')->addMethodCall('setBar', [['%value%', new Reference('bar')]]);
         $builder->setParameter('value', 'bar');
-        $this->assertEquals(array('bar', $builder->get('bar')), $builder->get('foo1')->bar, '->createService() replaces the values in the method calls arguments');
+        $this->assertEquals(['bar', $builder->get('bar')], $builder->get('foo1')->bar, '->createService() replaces the values in the method calls arguments');
     }
 
     public function testCreateServiceMethodCallsWithEscapedParam()
     {
         $builder = new ContainerBuilder();
         $builder->register('bar', 'stdClass');
-        $builder->register('foo1', 'Bar\FooClass')->addMethodCall('setBar', array(array('%%unescape_it%%')));
+        $builder->register('foo1', 'Bar\FooClass')->addMethodCall('setBar', [['%%unescape_it%%']]);
         $builder->setParameter('value', 'bar');
-        $this->assertEquals(array('%unescape_it%'), $builder->get('foo1')->bar, '->createService() replaces the values in the method calls arguments');
+        $this->assertEquals(['%unescape_it%'], $builder->get('foo1')->bar, '->createService() replaces the values in the method calls arguments');
     }
 
     public function testCreateServiceProperties()
     {
         $builder = new ContainerBuilder();
         $builder->register('bar', 'stdClass');
-        $builder->register('foo1', 'Bar\FooClass')->setProperty('bar', array('%value%', new Reference('bar'), '%%unescape_it%%'));
+        $builder->register('foo1', 'Bar\FooClass')->setProperty('bar', ['%value%', new Reference('bar'), '%%unescape_it%%']);
         $builder->setParameter('value', 'bar');
-        $this->assertEquals(array('bar', $builder->get('bar'), '%unescape_it%'), $builder->get('foo1')->bar, '->createService() replaces the values in the properties');
+        $this->assertEquals(['bar', $builder->get('bar'), '%unescape_it%'], $builder->get('foo1')->bar, '->createService() replaces the values in the properties');
     }
 
     public function testCreateServiceConfigurator()
     {
         $builder = new ContainerBuilder();
         $builder->register('foo1', 'Bar\FooClass')->setConfigurator('sc_configure');
-        $builder->register('foo2', 'Bar\FooClass')->setConfigurator(array('%class%', 'configureStatic'));
+        $builder->register('foo2', 'Bar\FooClass')->setConfigurator(['%class%', 'configureStatic']);
         $builder->setParameter('class', 'BazClass');
         $builder->register('baz', 'BazClass');
-        $builder->register('foo3', 'Bar\FooClass')->setConfigurator(array(new Reference('baz'), 'configure'));
-        $builder->register('foo4', 'Bar\FooClass')->setConfigurator(array($builder->getDefinition('baz'), 'configure'));
+        $builder->register('foo3', 'Bar\FooClass')->setConfigurator([new Reference('baz'), 'configure']);
+        $builder->register('foo4', 'Bar\FooClass')->setConfigurator([$builder->getDefinition('baz'), 'configure']);
         $builder->register('foo5', 'Bar\FooClass')->setConfigurator('foo');
 
         $this->assertTrue($builder->get('foo1')->configured, '->createService() calls the configurator');
@@ -449,10 +449,10 @@ public function testCreateServiceWithIteratorArgument()
         $builder->register('bar', 'stdClass');
         $builder
             ->register('lazy_context', 'LazyContext')
-            ->setArguments(array(
-                new IteratorArgument(array('k1' => new Reference('bar'), new Reference('invalid', ContainerInterface::IGNORE_ON_INVALID_REFERENCE))),
-                new IteratorArgument(array()),
-            ))
+            ->setArguments([
+                new IteratorArgument(['k1' => new Reference('bar'), new Reference('invalid', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)]),
+                new IteratorArgument([]),
+            ])
         ;
 
         $lazyContext = $builder->get('lazy_context');
@@ -494,7 +494,7 @@ public function testCreateServiceWithExpression()
         $builder = new ContainerBuilder();
         $builder->setParameter('bar', 'bar');
         $builder->register('bar', 'BarClass');
-        $builder->register('foo', 'Bar\FooClass')->addArgument(array('foo' => new Expression('service("bar").foo ~ parameter("bar")')));
+        $builder->register('foo', 'Bar\FooClass')->addArgument(['foo' => new Expression('service("bar").foo ~ parameter("bar")')]);
         $this->assertEquals('foobar', $builder->get('foo')->arguments['foo']);
     }
 
@@ -503,7 +503,7 @@ public function testResolveServices()
         $builder = new ContainerBuilder();
         $builder->register('foo', 'Bar\FooClass');
         $this->assertEquals($builder->get('foo'), $builder->resolveServices(new Reference('foo')), '->resolveServices() resolves service references to service instances');
-        $this->assertEquals(array('foo' => array('foo', $builder->get('foo'))), $builder->resolveServices(array('foo' => array('foo', new Reference('foo')))), '->resolveServices() resolves service references to service instances in nested arrays');
+        $this->assertEquals(['foo' => ['foo', $builder->get('foo')]], $builder->resolveServices(['foo' => ['foo', new Reference('foo')]]), '->resolveServices() resolves service references to service instances in nested arrays');
         $this->assertEquals($builder->get('foo'), $builder->resolveServices(new Expression('service("foo")')), '->resolveServices() resolves expressions');
     }
 
@@ -531,25 +531,25 @@ public function testResolveServicesWithCustomDefinitionClass()
 
     public function testMerge()
     {
-        $container = new ContainerBuilder(new ParameterBag(array('bar' => 'foo')));
+        $container = new ContainerBuilder(new ParameterBag(['bar' => 'foo']));
         $container->setResourceTracking(false);
-        $config = new ContainerBuilder(new ParameterBag(array('foo' => 'bar')));
+        $config = new ContainerBuilder(new ParameterBag(['foo' => 'bar']));
         $container->merge($config);
-        $this->assertEquals(array('bar' => 'foo', 'foo' => 'bar'), $container->getParameterBag()->all(), '->merge() merges current parameters with the loaded ones');
+        $this->assertEquals(['bar' => 'foo', 'foo' => 'bar'], $container->getParameterBag()->all(), '->merge() merges current parameters with the loaded ones');
 
-        $container = new ContainerBuilder(new ParameterBag(array('bar' => 'foo')));
+        $container = new ContainerBuilder(new ParameterBag(['bar' => 'foo']));
         $container->setResourceTracking(false);
-        $config = new ContainerBuilder(new ParameterBag(array('foo' => '%bar%')));
+        $config = new ContainerBuilder(new ParameterBag(['foo' => '%bar%']));
         $container->merge($config);
         $container->compile();
-        $this->assertEquals(array('bar' => 'foo', 'foo' => 'foo'), $container->getParameterBag()->all(), '->merge() evaluates the values of the parameters towards already defined ones');
+        $this->assertEquals(['bar' => 'foo', 'foo' => 'foo'], $container->getParameterBag()->all(), '->merge() evaluates the values of the parameters towards already defined ones');
 
-        $container = new ContainerBuilder(new ParameterBag(array('bar' => 'foo')));
+        $container = new ContainerBuilder(new ParameterBag(['bar' => 'foo']));
         $container->setResourceTracking(false);
-        $config = new ContainerBuilder(new ParameterBag(array('foo' => '%bar%', 'baz' => '%foo%')));
+        $config = new ContainerBuilder(new ParameterBag(['foo' => '%bar%', 'baz' => '%foo%']));
         $container->merge($config);
         $container->compile();
-        $this->assertEquals(array('bar' => 'foo', 'foo' => 'foo', 'baz' => 'foo'), $container->getParameterBag()->all(), '->merge() evaluates the values of the parameters towards already defined ones');
+        $this->assertEquals(['bar' => 'foo', 'foo' => 'foo', 'baz' => 'foo'], $container->getParameterBag()->all(), '->merge() evaluates the values of the parameters towards already defined ones');
 
         $container = new ContainerBuilder();
         $container->setResourceTracking(false);
@@ -559,7 +559,7 @@ public function testMerge()
         $config->setDefinition('baz', new Definition('BazClass'));
         $config->setAlias('alias_for_foo', 'foo');
         $container->merge($config);
-        $this->assertEquals(array('service_container', 'foo', 'bar', 'baz'), array_keys($container->getDefinitions()), '->merge() merges definitions already defined ones');
+        $this->assertEquals(['service_container', 'foo', 'bar', 'baz'], array_keys($container->getDefinitions()), '->merge() merges definitions already defined ones');
 
         $aliases = $container->getAliases();
         $this->assertArrayHasKey('alias_for_foo', $aliases);
@@ -576,16 +576,16 @@ public function testMerge()
         $bag = new EnvPlaceholderParameterBag();
         $bag->get('env(Foo)');
         $config = new ContainerBuilder($bag);
-        $this->assertSame(array('%env(Bar)%'), $config->resolveEnvPlaceholders(array($bag->get('env(Bar)'))));
+        $this->assertSame(['%env(Bar)%'], $config->resolveEnvPlaceholders([$bag->get('env(Bar)')]));
         $container->merge($config);
-        $this->assertEquals(array('Foo' => 0, 'Bar' => 1), $container->getEnvCounters());
+        $this->assertEquals(['Foo' => 0, 'Bar' => 1], $container->getEnvCounters());
 
         $container = new ContainerBuilder();
         $config = new ContainerBuilder();
         $childDefA = $container->registerForAutoconfiguration('AInterface');
         $childDefB = $config->registerForAutoconfiguration('BInterface');
         $container->merge($config);
-        $this->assertSame(array('AInterface' => $childDefA, 'BInterface' => $childDefB), $container->getAutoconfiguredInstanceof());
+        $this->assertSame(['AInterface' => $childDefA, 'BInterface' => $childDefB], $container->getAutoconfiguredInstanceof());
     }
 
     /**
@@ -620,7 +620,7 @@ public function testResolveEnvValuesWithArray()
     {
         $_ENV['ANOTHER_DUMMY_ENV_VAR'] = 'dummy';
 
-        $dummyArray = array('1' => 'one', '2' => 'two');
+        $dummyArray = ['1' => 'one', '2' => 'two'];
 
         $container = new ContainerBuilder();
         $container->setParameter('dummy', '%env(ANOTHER_DUMMY_ENV_VAR)%');
@@ -673,7 +673,7 @@ public function testCompileWithArrayResolveEnv()
         $container->setParameter('foo', '%env(json:ARRAY)%');
         $container->compile(true);
 
-        $this->assertSame(array('foo' => 'bar'), $container->getParameter('foo'));
+        $this->assertSame(['foo' => 'bar'], $container->getParameter('foo'));
 
         putenv('ARRAY');
     }
@@ -688,7 +688,7 @@ public function testCompileWithArrayAndAnotherResolveEnv()
         $container->setParameter('bar', '%env(DUMMY_ENV_VAR)%');
         $container->compile(true);
 
-        $this->assertSame(array('foo' => 'bar'), $container->getParameter('foo'));
+        $this->assertSame(['foo' => 'bar'], $container->getParameter('foo'));
         $this->assertSame('abc', $container->getParameter('bar'));
 
         putenv('DUMMY_ENV_VAR');
@@ -745,9 +745,9 @@ public function testCastEnv()
 
         $container->register('foo', 'stdClass')
             ->setPublic(true)
-            ->setProperties(array(
+            ->setProperties([
                 'fake' => '%env(int:FAKE)%',
-            ));
+            ]);
 
         $container->compile(true);
 
@@ -761,9 +761,9 @@ public function testEnvAreNullable()
 
         $container->register('foo', 'stdClass')
             ->setPublic(true)
-            ->setProperties(array(
+            ->setProperties([
             'fake' => '%env(int:FAKE)%',
-        ));
+        ]);
 
         $container->compile(true);
 
@@ -775,23 +775,23 @@ public function testEnvInId()
         $container = include __DIR__.'/Fixtures/containers/container_env_in_id.php';
         $container->compile(true);
 
-        $expected = array(
+        $expected = [
             'service_container',
             'foo',
             'bar',
             'bar_%env(BAR)%',
-        );
+        ];
         $this->assertSame($expected, array_keys($container->getDefinitions()));
 
-        $expected = array(
+        $expected = [
             PsrContainerInterface::class => true,
             ContainerInterface::class => true,
             'baz_%env(BAR)%' => true,
             'bar_%env(BAR)%' => true,
-        );
+        ];
         $this->assertSame($expected, $container->getRemovedIds());
 
-        $this->assertSame(array('baz_bar'), array_keys($container->getDefinition('foo')->getArgument(1)));
+        $this->assertSame(['baz_bar'], array_keys
10000
($container->getDefinition('foo')->getArgument(1)));
     }
 
     /**
@@ -829,17 +829,17 @@ public function testfindTaggedServiceIds()
         $builder = new ContainerBuilder();
         $builder
             ->register('foo', 'Bar\FooClass')
-            ->addTag('foo', array('foo' => 'foo'))
-            ->addTag('bar', array('bar' => 'bar'))
-            ->addTag('foo', array('foofoo' => 'foofoo'))
+            ->addTag('foo', ['foo' => 'foo'])
+            ->addTag('bar', ['bar' => 'bar'])
+            ->addTag('foo', ['foofoo' => 'foofoo'])
         ;
-        $this->assertEquals($builder->findTaggedServiceIds('foo'), array(
-            'foo' => array(
-                array('foo' => 'foo'),
-                array('foofoo' => 'foofoo'),
-            ),
-        ), '->findTaggedServiceIds() returns an array of service ids and its tag attributes');
-        $this->assertEquals(array(), $builder->findTaggedServiceIds('foobar'), '->findTaggedServiceIds() returns an empty array if there is annotated services');
+        $this->assertEquals($builder->findTaggedServiceIds('foo'), [
+            'foo' => [
+                ['foo' => 'foo'],
+                ['foofoo' => 'foofoo'],
+            ],
+        ], '->findTaggedServiceIds() returns an array of service ids and its tag attributes');
+        $this->assertEquals([], $builder->findTaggedServiceIds('foobar'), '->findTaggedServiceIds() returns an empty array if there is annotated services');
     }
 
     public function testFindUnusedTags()
@@ -847,11 +847,11 @@ public function testFindUnusedTags()
         $builder = new ContainerBuilder();
         $builder
             ->register('foo', 'Bar\FooClass')
-            ->addTag('kernel.event_listener', array('foo' => 'foo'))
-            ->addTag('kenrel.event_listener', array('bar' => 'bar'))
+            ->addTag('kernel.event_listener', ['foo' => 'foo'])
+            ->addTag('kenrel.event_listener', ['bar' => 'bar'])
         ;
         $builder->findTaggedServiceIds('kernel.event_listener');
-        $this->assertEquals(array('kenrel.event_listener'), $builder->findUnusedTags(), '->findUnusedTags() returns an array with unused tags');
+        $this->assertEquals(['kenrel.event_listener'], $builder->findUnusedTags(), '->findUnusedTags() returns an array with unused tags');
     }
 
     public function testFindDefinition()
@@ -955,15 +955,15 @@ public function testResources()
         $container = new ContainerBuilder();
         $container->addResource($a = new FileResource(__DIR__.'/Fixtures/xml/services1.xml'));
         $container->addResource($b = new FileResource(__DIR__.'/Fixtures/xml/services2.xml'));
-        $resources = array();
+        $resources = [];
         foreach ($container->getResources() as $resource) {
             if (false === strpos($resource, '.php')) {
                 $resources[] = $resource;
             }
         }
-        $this->assertEquals(array($a, $b), $resources, '->getResources() returns an array of resources read for the current configuration');
-        $this->assertSame($container, $container->setResources(array()));
-        $this->assertEquals(array(), $container->getResources());
+        $this->assertEquals([$a, $b], $resources, '->getResources() returns an array of resources read for the current configuration');
+        $this->assertSame($container, $container->setResources([]));
+        $this->assertEquals([], $container->getResources());
     }
 
     public function testFileExists()
@@ -976,14 +976,14 @@ public function testFileExists()
 
         $this->assertTrue($container->fileExists((string) $a) && $container->fileExists((string) $b) && $container->fileExists($dir));
 
-        $resources = array();
+        $resources = [];
         foreach ($container->getResources() as $resource) {
             if (false === strpos($resource, '.php')) {
                 $resources[] = $resource;
             }
         }
 
-        $this->assertEquals(array($A, $a, $b, $c), $resources, '->getResources() returns an array of resources read for the current configuration');
+        $this->assertEquals([$A, $a, $b, $c], $resources, '->getResources() returns an array of resources read for the current configuration');
     }
 
     public function testExtension()
@@ -1014,28 +1014,28 @@ public function testRegisteredAndLoadedExtension()
     {
         $extension = $this->getMockBuilder('Symfony\\Component\\DependencyInjection\\Extension\\ExtensionInterface')->getMock();
         $extension->expects($this->exactly(2))->method('getAlias')->will($this->returnValue('project'));
-        $extension->expects($this->once())->method('load')->with(array(array('foo' => 'bar')));
+        $extension->expects($this->once())->method('load')->with([['foo' => 'bar']]);
 
         $container = new ContainerBuilder();
         $container->setResourceTracking(false);
         $container->registerExtension($extension);
-        $container->loadFromExtension('project', array('foo' => 'bar'));
+        $container->loadFromExtension('project', ['foo' => 'bar']);
         $container->compile();
     }
 
     public function testPrivateServiceUser()
     {
         $fooDefinition = new Definition('BarClass');
-        $fooUserDefinition = new Definition('BarUserClass', array(new Reference('bar')));
+        $fooUserDefinition = new Definition('BarUserClass', [new Reference('bar')]);
         $container = new ContainerBuilder();
         $container->setResourceTracking(false);
 
         $fooDefinition->setPublic(false);
 
-        $container->addDefinitions(array(
+        $container->addDefinitions([
             'bar' => $fooDefinition,
             'bar_user' => $fooUserDefinition->setPublic(true),
-        ));
+        ]);
 
         $container->compile();
         $this->assertInstanceOf('BarClass', $container->get('bar_user')->bar);
@@ -1090,15 +1090,15 @@ public function testExtensionConfig()
         $configs = $container->getExtensionConfig('foo');
         $this->assertEmpty($configs);
 
-        $first = array('foo' => 'bar');
+        $first = ['foo' => 'bar'];
         $container->prependExtensionConfig('foo', $first);
         $configs = $container->getExtensionConfig('foo');
-        $this->assertEquals(array($first), $configs);
+        $this->assertEquals([$first], $configs);
 
-        $second = array('ding' => 'dong');
+        $second = ['ding' => 'dong'];
         $container->prependExtensionConfig('foo', $second);
         $configs = $container->getExtensionConfig('foo');
-        $this->assertEquals(array($second, $first), $configs);
+        $this->assertEquals([$second, $first], $configs);
     }
 
     public function testAbstractAlias()
@@ -1158,7 +1158,7 @@ public function testInlinedDefinitions()
 
         $container->register('bar', 'BarClass')
             ->setProperty('foo', $definition)
-            ->addMethodCall('setBaz', array($definition));
+            ->addMethodCall('setBaz', [$definition]);
 
         $barUser = $container->get('bar_user');
         $bar = $container->get('bar');
@@ -1176,11 +1176,11 @@ public function testThrowsCircularExceptionForCircularAliases()
     {
         $builder = new ContainerBuilder();
 
-        $builder->setAliases(array(
+        $builder->setAliases([
             'foo' => new Alias('app.test_class'),
             'app.test_class' => new Alias('App\\TestClass'),
             'App\\TestClass' => new Alias('app.test_class'),
-        ));
+        ]);
 
         $builder->findDefinition('foo');
     }
@@ -1291,12 +1291,12 @@ public function testServiceLocator()
         $container = new ContainerBuilder();
         $container->register('foo_service', ServiceLocator::class)
             ->setPublic(true)
-            ->addArgument(array(
+            ->addArgument([
                 'bar' => new ServiceClosureArgument(new Reference('bar_service')),
                 'baz' => new ServiceClosureArgument(new TypedReference('baz_service', 'stdClass')),
-            ))
+            ])
         ;
-        $container->register('bar_service', 'stdClass')->setArguments(array(new Reference('baz_service')))->setPublic(true);
+        $container->register('bar_service', 'stdClass')->setArguments([new Reference('baz_service')])->setPublic(true);
         $container->register('baz_service', 'stdClass')->setPublic(false);
         $container->compile();
 
@@ -1317,7 +1317,7 @@ public function testUninitializedReference()
         $this->assertNull($bar->closures[0]());
         $this->assertNull($bar->closures[1]());
         $this->assertNull($bar->closures[2]());
-        $this->assertSame(array(), iterator_to_array($bar->iter));
+        $this->assertSame([], iterator_to_array($bar->iter));
 
         $container = include __DIR__.'/Fixtures/containers/container_uninitialized_ref.php';
         $container->compile();
@@ -1333,7 +1333,7 @@ public function testUninitializedReference()
         $this->assertEquals(new \stdClass(), $bar->closures[0]());
         $this->assertNull($bar->closures[1]());
         $this->assertEquals(new \stdClass(), $bar->closures[2]());
-        $this->assertEquals(array('foo1' => new \stdClass(), 'foo3' => new \stdClass()), iterator_to_array($bar->iter));
+        $this->assertEquals(['foo1' => new \stdClass(), 'foo3' => new \stdClass()], iterator_to_array($bar->iter));
     }
 
     /**
@@ -1349,7 +1349,7 @@ public function testAlmostCircular($visibility)
         $foo2 = $container->get('foo2');
         $this->assertSame($foo2, $foo2->bar->foobar->foo);
 
-        $this->assertSame(array(), (array) $container->get('foobar4'));
+        $this->assertSame([], (array) $container->get('foobar4'));
 
         $foo5 = $container->get('foo5');
         $this->assertSame($foo5, $foo5->bar->foo);
@@ -1361,15 +1361,15 @@ public function testAlmostCircular($visibility)
         $this->assertEquals(new \stdClass(), $manager);
 
         $foo6 = $container->get('foo6');
-        $this->assertEquals((object) array('bar6' => (object) array()), $foo6);
+        $this->assertEquals((object) ['bar6' => (object) []], $foo6);
 
         $this->assertInstanceOf(\stdClass::class, $container->get('root'));
     }
 
     public function provideAlmostCircular()
     {
-        yield array('public');
-        yield array('private');
+        yield ['public'];
+        yield ['private'];
     }
 
     public function testRegisterForAutoconfiguration()
@@ -1377,7 +1377,7 @@ public function testRegisterForAutoconfiguration()
         $container = new ContainerBuilder();
         $childDefA = $container->registerForAutoconfiguration('AInterface');
         $childDefB = $container->registerForAutoconfiguration('BInterface');
-        $this->assertSame(array('AInterface' => $childDefA, 'BInterface' => $childDefB), $container->getAutoconfiguredInstanceof());
+        $this->assertSame(['AInterface' => $childDefA, 'BInterface' => $childDefB], $container->getAutoconfiguredInstanceof());
 
         // when called multiple times, the same instance is returned
         $this->assertSame($childDefA, $container->registerForAutoconfiguration('AInterface'));
@@ -1390,7 +1390,7 @@ public function testCaseSensitivity()
         $container->register('Foo', 'stdClass')->setProperty('foo', new Reference('foo'))->setPublic(false);
         $container->register('fOO', 'stdClass')->setProperty('Foo', new Reference('Foo'))->setPublic(true);
 
-        $this->assertSame(array('service_container', 'foo', 'Foo', 'fOO', 'Psr\Container\ContainerInterface', 'Symfony\Component\DependencyInjection\ContainerInterface'), $container->getServiceIds());
+        $this->assertSame(['service_container', 'foo', 'Foo', 'fOO', 'Psr\Container\ContainerInterface', 'Symfony\Component\DependencyInjection\ContainerInterface'], $container->getServiceIds());
 
         $container->compile();
 
@@ -1400,7 +1400,7 @@ public function testCaseSensitivity()
 
     public function testParameterWithMixedCase()
     {
-        $container = new ContainerBuilder(new ParameterBag(array('foo' => 'bar', 'FOO' => 'BAR')));
+        $container = new ContainerBuilder(new ParameterBag(['foo' => 'bar', 'FOO' => 'BAR']));
         $container->register('foo', 'stdClass')
             ->setPublic(true)
             ->setProperty('foo', '%FOO%');
@@ -1413,20 +1413,20 @@ public function testParameterWithMixedCase()
     public function testArgumentsHaveHigherPriorityThanBindings()
     {
         $container = new ContainerBuilder();
-        $container->register('class.via.bindings', CaseSensitiveClass::class)->setArguments(array(
+        $container->register('class.via.bindings', CaseSensitiveClass::class)->setArguments([
             'via-bindings',
-        ));
-        $container->register('class.via.argument', CaseSensitiveClass::class)->setArguments(array(
+        ]);
+        $container->register('class.via.argument', CaseSensitiveClass::class)->setArguments([
             'via-argument',
-        ));
-        $container->register('foo', SimilarArgumentsDummy::class)->setPublic(true)->setBindings(array(
+        ]);
+        $container->register('foo', SimilarArgumentsDummy::class)->setPublic(true)->setBindings([
             CaseSensitiveClass::class => new Reference('class.via.bindings'),
             '$token' => '1234',
-        ))->setArguments(array(
+        ])->setArguments([
             '$class1' => new Reference('class.via.argument'),
-        ));
+        ]);
 
-        $this->assertSame(array('service_container', 'class.via.bindings', 'class.via.argument', 'foo', 'Psr\Container\ContainerInterface', 'Symfony\Component\DependencyInjection\ContainerInterface'), $container->getServiceIds());
+        $this->assertSame(['service_container', 'class.via.bindings', 'class.via.argument', 'foo', 'Psr\Container\ContainerInterface', 'Symfony\Component\DependencyInjection\ContainerInterface'], $container->getServiceIds());
 
         $container->compile();
 
@@ -1443,10 +1443,10 @@ public function testUninitializedSyntheticReference()
 
         $container->compile();
 
-        $this->assertEquals((object) array('foo' => null), $container->get('bar'));
+        $this->assertEquals((object) ['foo' => null], $container->get('bar'));
 
-        $container->set('foo', (object) array(123));
-        $this->assertEquals((object) array('foo' => (object) array(123)), $container->get('bar'));
+        $container->set('foo', (object) [123]);
+        $this->assertEquals((object) ['foo' => (object) [123]], $container->get('bar'));
     }
 
     public function testIdCanBeAnObjectAsLongAsItCanBeCastToString()
@@ -1495,7 +1495,7 @@ public function testDecoratedSelfReferenceInvolvingPrivateServices()
 
         $container->compile();
 
-        $this->assertSame(array('service_container'), array_keys($container->getDefinitions()));
+        $this->assertSame(['service_container'], array_keys($container->getDefinitions()));
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
index af5fa0c680cb..3089dc67612f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
@@ -25,8 +25,8 @@ public function testConstructor()
         $sc = new Container();
         $this->assertSame($sc, $sc->get('service_container'), '__construct() automatically registers itself as a service');
 
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
-        $this->assertEquals(array('foo' => 'bar'), $sc->getParameterBag()->all(), '__construct() takes an array of parameters as its first argument');
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
+        $this->assertEquals(['foo' => 'bar'], $sc->getParameterBag()->all(), '__construct() takes an array of parameters as its first argument');
     }
 
     /**
@@ -39,18 +39,18 @@ public function testCamelize($id, $expected)
 
     public function dataForTestCamelize()
     {
-        return array(
-            array('foo_bar', 'FooBar'),
-            array('foo.bar', 'Foo_Bar'),
-            array('foo.bar_baz', 'Foo_BarBaz'),
-            array('foo._bar', 'Foo_Bar'),
-            array('foo_.bar', 'Foo_Bar'),
-            array('_foo', 'Foo'),
-            array('.foo', '_Foo'),
-            array('foo_', 'Foo'),
-            array('foo.', 'Foo_'),
-            array('foo\bar', 'Foo_Bar'),
-        );
+        return [
+            ['foo_bar', 'FooBar'],
+            ['foo.bar', 'Foo_Bar'],
+            ['foo.bar_baz', 'Foo_BarBaz'],
+            ['foo._bar', 'Foo_Bar'],
+            ['foo_.bar', 'Foo_Bar'],
+            ['_foo', 'Foo'],
+            ['.foo', '_Foo'],
+            ['foo_', 'Foo'],
+            ['foo.', 'Foo_'],
+            ['foo\bar', 'Foo_Bar'],
+        ];
     }
 
     /**
@@ -63,29 +63,29 @@ public function testUnderscore($id, $expected)
 
     public function dataForTestUnderscore()
     {
-        return array(
-            array('FooBar', 'foo_bar'),
-            array('Foo_Bar', 'foo.bar'),
-            array('Foo_BarBaz', 'foo.bar_baz'),
-            array('FooBar_BazQux', 'foo_bar.baz_qux'),
-            array('_Foo', '.foo'),
-            array('Foo_', 'foo.'),
-        );
+        return [
+            ['FooBar', 'foo_bar'],
+            ['Foo_Bar', 'foo.bar'],
+            ['Foo_BarBaz', 'foo.bar_baz'],
+            ['FooBar_BazQux', 'foo_bar.baz_qux'],
+            ['_Foo', '.foo'],
+            ['Foo_', 'foo.'],
+        ];
     }
 
     public function testCompile()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
         $this->assertFalse($sc->getParameterBag()->isResolved(), '->compile() resolves the parameter bag');
         $sc->compile();
         $this->assertTrue($sc->getParameterBag()->isResolved(), '->compile() resolves the parameter bag');
         $this->assertInstanceOf('Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag', $sc->getParameterBag(), '->compile() changes the parameter bag to a FrozenParameterBag instance');
-        $this->assertEquals(array('foo' => 'bar'), $sc->getParameterBag()->all(), '->compile() copies the current parameters to the new parameter bag');
+        $this->assertEquals(['foo' => 'bar'], $sc->getParameterBag()->all(), '->compile() copies the current parameters to the new parameter bag');
     }
 
     public function testIsCompiled()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
         $this->assertFalse($sc->isCompiled(), '->isCompiled() returns false if the container is not compiled');
         $sc->compile();
         $this->assertTrue($sc->isCompiled(), '->isCompiled() returns true if the container is compiled');
@@ -93,19 +93,19 @@ public function testIsCompiled()
 
     public function testIsCompiledWithFrozenParameters()
     {
-        $sc = new Container(new FrozenParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new FrozenParameterBag(['foo' => 'bar']));
         $this->assertFalse($sc->isCompiled(), '->isCompiled() returns false if the container is not compiled but the parameter bag is already frozen');
     }
 
     public function testGetParameterBag()
     {
         $sc = new Container();
-        $this->assertEquals(array(), $sc->getParameterBag()->all(), '->getParameterBag() returns an empty array if no parameter has been defined');
+        $this->assertEquals([], $sc->getParameterBag()->all(), '->getParameterBag() returns an empty array if no parameter has been defined');
     }
 
     public function testGetSetParameter()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
         $sc->setParameter('bar', 'foo');
         $this->assertEquals('foo', $sc->getParameter('bar'), '->setParameter() sets the value of a new parameter');
 
@@ -123,7 +123,7 @@ public function testGetSetParameter()
 
     public function testGetSetParameterWithMixedCase()
     {
-        $sc = new Container(new ParameterBag(array('foo' => 'bar')));
+        $sc = new Container(new ParameterBag(['foo' => 'bar']));
 
         $sc->setParameter('Foo', 'baz1');
         $this->assertEquals('bar', $sc->getParameter('foo'));
@@ -135,11 +135,11 @@ public function testGetServiceIds()
         $sc = new Container();
         $sc->set('foo', $obj = new \stdClass());
         $sc->set('bar', $obj = new \stdClass());
-        $this->assertEquals(array('service_container', 'foo', 'bar'), $sc->getServiceIds(), '->getServiceIds() returns all defined service ids');
+        $this->assertEquals(['service_container', 'foo', 'bar'], $sc->getServiceIds(), '->getServiceIds() returns all defined service ids');
 
         $sc = new ProjectServiceContainer();
         $sc->set('foo', $obj = new \stdClass());
-        $this->assertEquals(array('service_container', 'bar', 'foo_bar', 'foo.baz', 'circular', 'throw_exception', 'throws_exception_on_service_configuration', 'internal_dependency', 'foo'), $sc->getServiceIds(), '->getServiceIds() returns defined service ids by factory methods in the method map, followed by service ids defined by set()');
+        $this->assertEquals(['service_container', 'bar', 'foo_bar', 'foo.baz', 'circular', 'throw_exception', 'throws_exception_on_service_configuration', 'internal_dependency', 'foo'], $sc->getServiceIds(), '->getServiceIds() returns defined service ids by factory methods in the method map, followed by service ids defined by set()');
     }
 
     public function testSet()
@@ -219,7 +219,7 @@ public function testCaseSensitivity()
         $sc->set('foo', $foo1 = new \stdClass());
         $sc->set('Foo', $foo2 = new \stdClass());
 
-        $this->assertSame(array('service_container', 'foo', 'Foo'), $sc->getServiceIds());
+        $this->assertSame(['service_container', 'foo', 'Foo'], $sc->getServiceIds());
         $this->assertSame($foo1, $sc->get('foo'), '->get() returns the service for the given id, case sensitively');
         $this->assertSame($foo2, $sc->get('Foo'), '->get() returns the service for the given id, case sensitively');
     }
@@ -413,7 +413,7 @@ class ProjectServiceContainer extends Container
     public $__foo_baz;
     public $__internal;
     protected $privates;
-    protected $methodMap = array(
+    protected $methodMap = [
         'bar' => 'getBarService',
         'foo_bar' => 'getFooBarService',
         'foo.baz' => 'getFoo_BazService',
@@ -421,7 +421,7 @@ class ProjectServiceContainer extends Container
         'throw_exception' => 'getThrowExceptionService',
         'throws_exception_on_service_configuration' => 'getThrowsExceptionOnServiceConfigurationService',
         'internal_dependency' => 'getInternalDependencyService',
-    );
+    ];
 
     public function __construct()
     {
@@ -431,8 +431,8 @@ public function __construct()
         $this->__foo_bar = new \stdClass();
         $this->__foo_baz = new \stdClass();
         $this->__internal = new \stdClass();
-        $this->privates = array();
-        $this->aliases = array('alias' => 'bar');
+        $this->privates = [];
+        $this->aliases = ['alias' => 'bar'];
     }
 
     protected function getInternalService()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/CrossCheckTest.php b/src/Symfony/Component/DependencyInjection/Tests/CrossCheckTest.php
index c15104c66d04..12e9ebe422a8 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/CrossCheckTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/CrossCheckTest.php
@@ -57,11 +57,11 @@ public function testCrossCheck($fixture, $type)
         $this->assertEquals($container2->getParameterBag()->all(), $container1->getParameterBag()->all(), '->getParameterBag() returns the same value for both containers');
         $this->assertEquals(serialize($container2), serialize($container1), 'loading a dump from a previously loaded container returns the same container');
 
-        $services1 = array();
+        $services1 = [];
         foreach ($container1 as $id => $service) {
             $services1[$id] = serialize($service);
         }
-        $services2 = array();
+        $services2 = [];
         foreach ($container2 as $id => $service) {
             $services2[$id] = serialize($service);
         }
@@ -73,17 +73,17 @@ public function testCrossCheck($fixture, $type)
 
     public function crossCheckLoadersDumpers()
     {
-        return array(
-            array('services1.xml', 'xml'),
-            array('services2.xml', 'xml'),
-            array('services6.xml', 'xml'),
-            array('services8.xml', 'xml'),
-            array('services9.xml', 'xml'),
-            array('services1.yml', 'yaml'),
-            array('services2.yml', 'yaml'),
-            array('services6.yml', 'yaml'),
-            array('services8.yml', 'yaml'),
-            array('services9.yml', 'yaml'),
-        );
+        return [
+            ['services1.xml', 'xml'],
+            ['services2.xml', 'xml'],
+            ['services6.xml', 'xml'],
+            ['services8.xml', 'xml'],
+            ['services9.xml', 'xml'],
+            ['services1.yml', 'yaml'],
+            ['services2.yml', 'yaml'],
+            ['services6.yml', 'yaml'],
+            ['services8.yml', 'yaml'],
+            ['services9.yml', 'yaml'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php b/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php
index 0ed135915e49..67361753dcb2 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php
@@ -20,10 +20,10 @@ public function testConstructor()
     {
         $def = new Definition('stdClass');
         $this->assertEquals('stdClass', $def->getClass(), '__construct() takes the class name as its first argument');
-        $this->assertSame(array('class' => true), $def->getChanges());
+        $this->assertSame(['class' => true], $def->getChanges());
 
-        $def = new Definition('stdClass', array('foo'));
-        $this->assertEquals(array('foo'), $def->getArguments(), '__construct() takes an optional array of arguments as its second argument');
+        $def = new Definition('stdClass', ['foo']);
+        $this->assertEquals(['foo'], $def->getArguments(), '__construct() takes an optional array of arguments as its second argument');
     }
 
     public function testSetGetFactory()
@@ -34,8 +34,8 @@ public function testSetGetFactory()
         $this->assertEquals('foo', $def->getFactory(), '->getFactory() returns the factory');
 
         $def->setFactory('Foo::bar');
-        $this->assertEquals(array('Foo', 'bar'), $def->getFactory(), '->setFactory() converts string static method call to the array');
-        $this->assertSame(array('factory' => true), $def->getChanges());
+        $this->assertEquals(['Foo', 'bar'], $def->getFactory(), '->setFactory() converts string static method call to the array');
+        $this->assertSame(['factory' => true], $def->getChanges());
     }
 
     public function testSetGetClass()
@@ -50,20 +50,20 @@ public function testSetGetDecoratedService()
         $def = new Definition('stdClass');
         $this->assertNull($def->getDecoratedService());
         $def->setDecoratedService('foo', 'foo.renamed', 5);
-        $this->assertEquals(array('foo', 'foo.renamed', 5), $def->getDecoratedService());
+        $this->assertEquals(['foo', 'foo.renamed', 5], $def->getDecoratedService());
         $def->setDecoratedService(null);
         $this->assertNull($def->getDecoratedService());
 
         $def = new Definition('stdClass');
         $this->assertNull($def->getDecoratedService());
         $def->setDecoratedService('foo', 'foo.renamed');
-        $this->assertEquals(array('foo', 'foo.renamed', 0), $def->getDecoratedService());
+        $this->assertEquals(['foo', 'foo.renamed', 0], $def->getDecoratedService());
         $def->setDecoratedService(null);
         $this->assertNull($def->getDecoratedService());
 
         $def = new Definition('stdClass');
         $def->setDecoratedService('foo');
-        $this->assertEquals(array('foo', null, 0), $def->getDecoratedService());
+        $this->assertEquals(['foo', null, 0], $def->getDecoratedService());
         $def->setDecoratedService(null);
         $this->assertNull($def->getDecoratedService());
 
@@ -82,23 +82,23 @@ public function testSetGetDecoratedService()
     public function testArguments()
     {
         $def = new Definition('stdClass');
-        $this->assertSame($def, $def->setArguments(array('foo')), '->setArguments() implements a fluent interface');
-        $this->assertEquals(array('foo'), $def->getArguments(), '->getArguments() returns the arguments');
+        $this->assertSame($def, $def->setArguments(['foo']), '->setArguments() implements a fluent interface');
+        $this->assertEquals(['foo'], $def->getArguments(), '->getArguments() returns the arguments');
         $this->assertSame($def, $def->addArgument('bar'), '->addArgument() implements a fluent interface');
-        $this->assertEquals(array('foo', 'bar'), $def->getArguments(), '->addArgument() adds an argument');
+        $this->assertEquals(['foo', 'bar'], $def->getArguments(), '->addArgument() adds an argument');
     }
 
     public function testMethodCalls()
     {
         $def = new Definition('stdClass');
-        $this->assertSame($def, $def->setMethodCalls(array(array('foo', array('foo')))), '->setMethodCalls() implements a fluent interface');
-        $this->assertEquals(array(array('foo', array('foo'))), $def->getMethodCalls(), '->getMethodCalls() returns the methods to call');
-        $this->assertSame($def, $def->addMethodCall('bar', array('bar')), '->addMethodCall() implements a fluent interface');
-        $this->assertEquals(array(array('foo', array('foo')), array('bar', array('bar'))), $def->getMethodCalls(), '->addMethodCall() adds a method to call');
+        $this->assertSame($def, $def->setMethodCalls([['foo', ['foo']]]), '->setMethodCalls() implements a fluent interface');
+        $this->assertEquals([['foo', ['foo']]], $def->getMethodCalls(), '->getMethodCalls() returns the methods to call');
+        $this->assertSame($def, $def->addMethodCall('bar', ['bar']), '->addMethodCall() implements a fluent interface');
+        $this->assertEquals([['foo', ['foo']], ['bar', ['bar']]], $def->getMethodCalls(), '->addMethodCall() adds a method to call');
         $this->assertTrue($def->hasMethodCall('bar'), '->hasMethodCall() returns true if first argument is a method to call registered');
         $this->assertFalse($def->hasMethodCall('no_registered'), '->hasMethodCall() returns false if first argument is not a method to call registered');
         $this->assertSame($def, $def->removeMethodCall('bar'), '->removeMethodCall() implements a fluent interface');
-        $this->assertEquals(array(array('foo', array('foo'))), $def->getMethodCalls(), '->removeMethodCall() removes a method to call');
+        $this->assertEquals([['foo', ['foo']]], $def->getMethodCalls(), '->removeMethodCall() removes a method to call');
     }
 
     /**
@@ -179,12 +179,12 @@ public function testSetDeprecatedWithInvalidDeprecationTemplate($message)
 
     public function invalidDeprecationMessageProvider()
     {
-        return array(
-            "With \rs" => array("invalid \r message %service_id%"),
-            "With \ns" => array("invalid \n message %service_id%"),
-            'With */s' => array('invalid */ message %service_id%'),
-            'message not containing require %service_id% variable' => array('this is deprecated'),
-        );
+        return [
+            "With \rs" => ["invalid \r message %service_id%"],
+            "With \ns" => ["invalid \n message %service_id%"],
+            'With */s' => ['invalid */ message %service_id%'],
+            'message not containing require %service_id% variable' => ['this is deprecated'],
+        ];
     }
 
     public function testSetGetConfigurator()
@@ -198,18 +198,18 @@ public function testClearTags()
     {
         $def = new Definition('stdClass');
         $this->assertSame($def, $def->clearTags(), '->clearTags() implements a fluent interface');
-        $def->addTag('foo', array('foo' => 'bar'));
+        $def->addTag('foo', ['foo' => 'bar']);
         $def->clearTags();
-        $this->assertEquals(array(), $def->getTags(), '->clearTags() removes all current tags');
+        $this->assertEquals([], $def->getTags(), '->clearTags() removes all current tags');
     }
 
     public function testClearTag()
     {
         $def = new Definition('stdClass');
         $this->assertSame($def, $def->clearTags(), '->clearTags() implements a fluent interface');
-        $def->addTag('1foo1', array('foo1' => 'bar1'));
-        $def->addTag('2foo2', array('foo2' => 'bar2'));
-        $def->addTag('3foo3', array('foo3' => 'bar3'));
+        $def->addTag('1foo1', ['foo1' => 'bar1']);
+        $def->addTag('2foo2', ['foo2' => 'bar2']);
+        $def->addTag('3foo3', ['foo3' => 'bar3']);
         $def->clearTag('2foo2');
         $this->assertTrue($def->hasTag('1foo1'));
         $this->assertFalse($def->hasTag('2foo2'));
@@ -222,18 +222,18 @@ public function testClearTag()
     public function testTags()
     {
         $def = new Definition('stdClass');
-        $this->assertEquals(array(), $def->getTag('foo'), '->getTag() returns an empty array if the tag is not defined');
+        $this->assertEquals([], $def->getTag('foo'), '->getTag() returns an empty array if the tag is not defined');
         $this->assertFalse($def->hasTag('foo'));
         $this->assertSame($def, $def->addTag('foo'), '->addTag() implements a fluent interface');
         $this->assertTrue($def->hasTag('foo'));
-        $this->assertEquals(array(array()), $def->getTag('foo'), '->getTag() returns attributes for a tag name');
-        $def->addTag('foo', array('foo' => 'bar'));
-        $this->assertEquals(array(array(), array('foo' => 'bar')), $def->getTag('foo'), '->addTag() can adds the same tag several times');
-        $def->addTag('bar', array('bar' => 'bar'));
-        $this->assertEquals($def->getTags(), array(
-            'foo' => array(array(), array('foo' => 'bar')),
-            'bar' => array(array('bar' => 'bar')),
-        ), '->getTags() returns all tags');
+        $this->assertEquals([[]], $def->getTag('foo'), '->getTag() returns attributes for a tag name');
+        $def->addTag('foo', ['foo' => 'bar']);
+        $this->assertEquals([[], ['foo' => 'bar']], $def->getTag('foo'), '->addTag() can adds the same tag several times');
+        $def->addTag('bar', ['bar' => 'bar']);
+        $this->assertEquals($def->getTags(), [
+            'foo' => [[], ['foo' => 'bar']],
+            'bar' => [['bar' => 'bar']],
+        ], '->getTags() returns all tags');
     }
 
     public function testSetArgument()
@@ -241,17 +241,17 @@ public function testSetArgument()
         $def = new Definition('stdClass');
 
         $def->addArgument('foo');
-        $this->assertSame(array('foo'), $def->getArguments());
+        $this->assertSame(['foo'], $def->getArguments());
 
         $this->assertSame($def, $def->replaceArgument(0, 'moo'));
-        $this->assertSame(array('moo'), $def->getArguments());
+        $this->assertSame(['moo'], $def->getArguments());
 
         $def->addArgument('moo');
         $def
             ->replaceArgument(0, 'foo')
             ->replaceArgument(1, 'bar')
         ;
-        $this->assertSame(array('foo', 'bar'), $def->getArguments());
+        $this->assertSame(['foo', 'bar'], $def->getArguments());
     }
 
     /**
@@ -291,18 +291,18 @@ public function testSetGetProperties()
     {
         $def = new Definition('stdClass');
 
-        $this->assertEquals(array(), $def->getProperties());
-        $this->assertSame($def, $def->setProperties(array('foo' => 'bar')));
-        $this->assertEquals(array('foo' => 'bar'), $def->getProperties());
+        $this->assertEquals([], $def->getProperties());
+        $this->assertSame($def, $def->setProperties(['foo' => 'bar']));
+        $this->assertEquals(['foo' => 'bar'], $def->getProperties());
     }
 
     public function testSetProperty()
     {
         $def = new Definition('stdClass');
 
-        $this->assertEquals(array(), $def->getProperties());
+        $this->assertEquals([], $def->getProperties());
         $this->assertSame($def, $def->setProperty('foo', 'bar'));
-        $this->assertEquals(array('foo' => 'bar'), $def->getProperties());
+        $this->assertEquals(['foo' => 'bar'], $def->getProperties());
     }
 
     public function testAutowired()
@@ -321,12 +321,12 @@ public function testChangesNoChanges()
     {
         $def = new Definition();
 
-        $this->assertSame(array(), $def->getChanges());
+        $this->assertSame([], $def->getChanges());
     }
 
     public function testGetChangesWithChanges()
     {
-        $def = new Definition('stdClass', array('fooarg'));
+        $def = new Definition('stdClass', ['fooarg']);
 
         $def->setAbstract(true);
         $def->setAutowired(true);
@@ -340,13 +340,13 @@ public function testGetChangesWithChanges()
         $def->setShared(true);
         $def->setSynthetic(true);
         // changes aren't tracked for these, class or arguments
-        $def->setInstanceofConditionals(array());
+        $def->setInstanceofConditionals([]);
         $def->addTag('foo_tag');
         $def->addMethodCall('methodCall');
         $def->setProperty('fooprop', true);
         $def->setAutoconfigured(true);
 
-        $this->assertSame(array(
+        $this->assertSame([
             'class' => true,
             'autowired' => true,
             'configurator' => true,
@@ -358,10 +358,10 @@ public function testGetChangesWithChanges()
             'public' => true,
             'shared' => true,
             'autoconfigured' => true,
-        ), $def->getChanges());
+        ], $def->getChanges());
 
-        $def->setChanges(array());
-        $this->assertSame(array(), $def->getChanges());
+        $def->setChanges([]);
+        $this->assertSame([], $def->getChanges());
     }
 
     public function testShouldAutoconfigure()
@@ -378,6 +378,6 @@ public function testAddError()
         $this->assertEmpty($def->getErrors());
         $def->addError('First error');
         $def->addError('Second error');
-        $this->assertSame(array('First error', 'Second error'), $def->getErrors());
+        $this->assertSame(['First error', 'Second error'], $def->getErrors());
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
index fa4e42017e03..cb4866476d9b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -53,14 +53,14 @@ public function testDump()
         $dumper = new PhpDumper($container);
 
         $this->assertStringEqualsFile(self::$fixturesPath.'/php/services1.php', $dumper->dump(), '->dump() dumps an empty container as an empty PHP class');
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services1-1.php', $dumper->dump(array('class' => 'Container', 'base_class' => 'AbstractContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Dump')), '->dump() takes a class and a base_class options');
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services1-1.php', $dumper->dump(['class' => 'Container', 'base_class' => 'AbstractContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Dump']), '->dump() takes a class and a base_class options');
     }
 
     public function testDumpOptimizationString()
     {
         $definition = new Definition();
         $definition->setClass('stdClass');
-        $definition->addArgument(array(
+        $definition->addArgument([
             'only dot' => '.',
             'concatenation as value' => '.\'\'.',
             'concatenation from the start value' => '\'\'.',
@@ -72,7 +72,7 @@ public function testDumpOptimizationString()
             'optimize concatenation from the start' => '%empty_value%start',
             'optimize concatenation at the end' => 'end%empty_value%',
             'new line' => "string with \nnew line",
-        ));
+        ]);
         $definition->setPublic(true);
 
         $container = new ContainerBuilder();
@@ -91,7 +91,7 @@ public function testDumpRelativeDir()
         $definition = new Definition();
         $definition->setClass('stdClass');
         $definition->addArgument('%foo%');
-        $definition->addArgument(array('%foo%' => '%buz%/'));
+        $definition->addArgument(['%foo%' => '%buz%/']);
         $definition->setPublic(true);
 
         $container = new ContainerBuilder();
@@ -103,7 +103,7 @@ public function testDumpRelativeDir()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services12.php', $dumper->dump(array('file' => __FILE__)), '->dump() dumps __DIR__ relative strings');
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services12.php', $dumper->dump(['file' => __FILE__]), '->dump() dumps __DIR__ relative strings');
     }
 
     public function testDumpCustomContainerClassWithoutConstructor()
@@ -113,7 +113,7 @@ public function testDumpCustomContainerClassWithoutConstructor()
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_without_constructor.php', $dumper->dump(array('base_class' => 'NoConstructorContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_without_constructor.php', $dumper->dump(['base_class' => 'NoConstructorContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container']));
     }
 
     public function testDumpCustomContainerClassConstructorWithoutArguments()
@@ -123,7 +123,7 @@ public function testDumpCustomContainerClassConstructorWithoutArguments()
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_constructor_without_arguments.php', $dumper->dump(array('base_class' => 'ConstructorWithoutArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_constructor_without_arguments.php', $dumper->dump(['base_class' => 'ConstructorWithoutArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container']));
     }
 
     public function testDumpCustomContainerClassWithOptionalArgumentLessConstructor()
@@ -133,7 +133,7 @@ public function testDumpCustomContainerClassWithOptionalArgumentLessConstructor(
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_with_optional_constructor_arguments.php', $dumper->dump(array('base_class' => 'ConstructorWithOptionalArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_with_optional_constructor_arguments.php', $dumper->dump(['base_class' => 'ConstructorWithOptionalArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container']));
     }
 
     public function testDumpCustomContainerClassWithMandatoryArgumentLessConstructor()
@@ -143,7 +143,7 @@ public function testDumpCustomContainerClassWithMandatoryArgumentLessConstructor
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_with_mandatory_constructor_arguments.php', $dumper->dump(array('base_class' => 'ConstructorWithMandatoryArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/custom_container_class_with_mandatory_constructor_arguments.php', $dumper->dump(['base_class' => 'ConstructorWithMandatoryArgumentsContainer', 'namespace' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\Container']));
     }
 
     /**
@@ -160,12 +160,12 @@ public function testExportParameters($parameters)
 
     public function provideInvalidParameters()
     {
-        return array(
-            array(array('foo' => new Definition('stdClass'))),
-            array(array('foo' => new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")'))),
-            array(array('foo' => new Reference('foo'))),
-            array(array('foo' => new Variable('foo'))),
-        );
+        return [
+            [['foo' => new Definition('stdClass')]],
+            [['foo' => new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')]],
+            [['foo' => new Reference('foo')]],
+            [['foo' => new Variable('foo')]],
+        ];
     }
 
     public function testAddParameters()
@@ -216,7 +216,7 @@ public function testDumpAsFiles()
             ->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        $dump = print_r($dumper->dump(array('as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot')), true);
+        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot']), true);
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace('\\\\Fixtures\\\\includes\\\\foo.php', '/Fixtures/includes/foo.php', $dump);
         }
@@ -240,7 +240,7 @@ public function testAddServiceIdWithUnsupportedCharacters()
         $container->register('bar$!', 'FooClass')->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => $class)));
+        eval('?>'.$dumper->dump(['class' => $class]));
 
         $this->assertTrue(method_exists($class, 'getBarService'));
         $this->assertTrue(method_exists($class, 'getBar2Service'));
@@ -254,7 +254,7 @@ public function testConflictingServiceIds()
         $container->register('foobar', 'FooClass')->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => $class)));
+        eval('?>'.$dumper->dump(['class' => $class]));
 
         $this->assertTrue(method_exists($class, 'getFooBarService'));
         $this->assertTrue(method_exists($class, 'getFoobar2Service'));
@@ -268,10 +268,10 @@ public function testConflictingMethodsWithParent()
         $container->register('foo_bar', 'FooClass')->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array(
+        eval('?>'.$dumper->dump([
             'class' => $class,
             'base_class' => 'Symfony\Component\DependencyInjection\Tests\Fixtures\containers\CustomContainer',
-        )));
+        ]));
 
         $this->assertTrue(method_exists($class, 'getBar2Service'));
         $this->assertTrue(method_exists($class, 'getFoobar2Service'));
@@ -296,12 +296,12 @@ public function testInvalidFactories($factory)
 
     public function provideInvalidFactories()
     {
-        return array(
-            array(array('', 'method')),
-            array(array('class', '')),
-            array(array('...', 'method')),
-            array(array('class', '...')),
-        );
+        return [
+            [['', 'method']],
+            [['class', '']],
+            [['...', 'method']],
+            [['class', '...']],
+        ];
     }
 
     public function testAliases()
@@ -310,7 +310,7 @@ public function testAliases()
         $container->setParameter('foo_bar', 'foo_bar');
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Aliases')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Aliases']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Aliases();
         $foo = $container->get('foo');
@@ -324,7 +324,7 @@ public function testFrozenContainerWithoutAliases()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Frozen_No_Aliases')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Frozen_No_Aliases']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Frozen_No_Aliases();
         $this->assertFalse($container->has('foo'));
@@ -374,12 +374,12 @@ public function testEnvParameter()
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services26.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_EnvParameters', 'file' => self::$fixturesPath.'/php/services26.php')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services26.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_EnvParameters', 'file' => self::$fixturesPath.'/php/services26.php']));
 
         require self::$fixturesPath.'/php/services26.php';
         $container = new \Symfony_DI_PhpDumper_Test_EnvParameters();
         $this->assertSame($rand, $container->getParameter('baz'));
-        $this->assertSame(array(123, 'abc'), $container->getParameter('json'));
+        $this->assertSame([123, 'abc'], $container->getParameter('json'));
         $this->assertSame('sqlite:///foo/bar/var/data.db', $container->getParameter('db_dsn'));
         putenv('Baz');
     }
@@ -391,10 +391,10 @@ public function testResolvedBase64EnvParameters()
         $container->setParameter('hello', '%env(base64:foo)%');
         $container->compile(true);
 
-        $expected = array(
+        $expected = [
             'env(foo)' => 'd29ybGQ=',
             'hello' => 'world',
-        );
+        ];
         $this->assertSame($expected, $container->getParameterBag()->all());
     }
 
@@ -408,7 +408,7 @@ public function testDumpedBase64EnvParameters()
         $dumper = new PhpDumper($container);
         $dumper->dump();
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_base64_env.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Base64Parameters')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_base64_env.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Base64Parameters']));
 
         require self::$fixturesPath.'/php/services_base64_env.php';
         $container = new \Symfony_DI_PhpDumper_Test_Base64Parameters();
@@ -425,11 +425,11 @@ public function testDumpedCsvEnvParameters()
         $dumper = new PhpDumper($container);
         $dumper->dump();
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_csv_env.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_CsvParameters')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_csv_env.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_CsvParameters']));
 
         require self::$fixturesPath.'/php/services_csv_env.php';
         $container = new \Symfony_DI_PhpDumper_Test_CsvParameters();
-        $this->assertSame(array('foo', 'bar'), $container->getParameter('hello'));
+        $this->assertSame(['foo', 'bar'], $container->getParameter('hello'));
     }
 
     public function testDumpedJsonEnvParameters()
@@ -444,12 +444,12 @@ public function testDumpedJsonEnvParameters()
         $dumper = new PhpDumper($container);
         $dumper->dump();
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_json_env.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_JsonParameters')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_json_env.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_JsonParameters']));
 
         putenv('foobar="hello"');
         require self::$fixturesPath.'/php/services_json_env.php';
         $container = new \Symfony_DI_PhpDumper_Test_JsonParameters();
-        $this->assertSame(array('foo', 'bar'), $container->getParameter('hello'));
+        $this->assertSame(['foo', 'bar'], $container->getParameter('hello'));
         $this->assertNull($container->getParameter('hello-bar'));
     }
 
@@ -464,7 +464,7 @@ public function testCustomEnvParameters()
         $dumper = new PhpDumper($container);
         $dumper->dump();
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_rot13_env.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Rot13Parameters')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_rot13_env.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Rot13Parameters']));
 
         require self::$fixturesPath.'/php/services_rot13_env.php';
         $container = new \Symfony_DI_PhpDumper_Test_Rot13Parameters();
@@ -506,7 +506,7 @@ public function testCircularDynamicEnv()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        $dump = $dumper->dump(array('class' => $class = __FUNCTION__));
+        $dump = $dumper->dump(['class' => $class = __FUNCTION__]);
 
         eval('?>'.$dump);
         $container = new $class();
@@ -522,7 +522,7 @@ public function testCircularDynamicEnv()
     public function testInlinedDefinitionReferencingServiceContainer()
     {
         $container = new ContainerBuilder();
-        $container->register('foo', 'stdClass')->addMethodCall('add', array(new Reference('service_container')))->setPublic(false);
+        $container->register('foo', 'stdClass')->addMethodCall('add', [new Reference('service_container')])->setPublic(false);
         $container->register('bar', 'stdClass')->addArgument(new Reference('foo'))->setPublic(true);
         $container->compile();
 
@@ -557,7 +557,7 @@ public function testInitializePropertiesBeforeMethodCalls()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Properties_Before_Method_Calls')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Properties_Before_Method_Calls']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Properties_Before_Method_Calls();
         $this->assertTrue($container->get('bar')->callPassed(), '->dump() initializes properties before method calls');
@@ -611,15 +611,15 @@ public function testLazyArgumentProvideGenerator()
         $container
             ->register('lazy_context', 'LazyContext')
             ->setPublic(true)
-            ->setArguments(array(
-                new IteratorArgument(array('k1' => new Reference('lazy_referenced'), 'k2' => new Reference('service_container'))),
-                new IteratorArgument(array()),
-            ))
+            ->setArguments([
+                new IteratorArgument(['k1' => new Reference('lazy_referenced'), 'k2' => new Reference('service_container')]),
+                new IteratorArgument([]),
+            ])
         ;
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Lazy_Argument_Provide_Generator')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Lazy_Argument_Provide_Generator']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Lazy_Argument_Provide_Generator();
         $lazyContext = $container->get('lazy_context');
@@ -658,8 +658,8 @@ public function testNormalizedId()
     public function testDumpContainerBuilderWithFrozenConstructorIncludingPrivateServices()
     {
         $container = new ContainerBuilder();
-        $container->register('foo_service', 'stdClass')->setArguments(array(new Reference('baz_service')))->setPublic(true);
-        $container->register('bar_service', 'stdClass')->setArguments(array(new Reference('baz_service')))->setPublic(true);
+        $container->register('foo_service', 'stdClass')->setArguments([new Reference('baz_service')])->setPublic(true);
+        $container->register('bar_service', 'stdClass')->setArguments([new Reference('baz_service')])->setPublic(true);
         $container->register('baz_service', 'stdClass')->setPublic(false);
         $container->compile();
 
@@ -673,20 +673,20 @@ public function testServiceLocator()
         $container = new ContainerBuilder();
         $container->register('foo_service', ServiceLocator::class)
             ->setPublic(true)
-            ->addArgument(array(
+            ->addArgument([
                 'bar' => new ServiceClosureArgument(new Reference('bar_service')),
                 'baz' => new ServiceClosureArgument(new TypedReference('baz_service', 'stdClass')),
                 'nil' => $nil = new ServiceClosureArgument(new Reference('nil')),
-            ))
+            ])
         ;
 
         // no method calls
         $container->register('translator.loader_1', 'stdClass')->setPublic(true);
         $container->register('translator.loader_1_locator', ServiceLocator::class)
             ->setPublic(false)
-            ->addArgument(array(
+            ->addArgument([
                 'translator.loader_1' => new ServiceClosureArgument(new Reference('translator.loader_1')),
-            ));
+            ]);
         $container->register('translator_1', StubbedTranslator::class)
             ->setPublic(true)
             ->addArgument(new Reference('translator.loader_1_locator'));
@@ -695,29 +695,29 @@ public function testServiceLocator()
         $container->register('translator.loader_2', 'stdClass')->setPublic(true);
         $container->register('translator.loader_2_locator', ServiceLocator::class)
             ->setPublic(false)
-            ->addArgument(array(
+            ->addArgument([
                 'translator.loader_2' => new ServiceClosureArgument(new Reference('translator.loader_2')),
-            ));
+            ]);
         $container->register('translator_2', StubbedTranslator::class)
             ->setPublic(true)
             ->addArgument(new Reference('translator.loader_2_locator'))
-            ->addMethodCall('addResource', array('db', new Reference('translator.loader_2'), 'nl'));
+            ->addMethodCall('addResource', ['db', new Reference('translator.loader_2'), 'nl']);
 
         // two method calls
         $container->register('translator.loader_3', 'stdClass')->setPublic(true);
         $container->register('translator.loader_3_locator', ServiceLocator::class)
             ->setPublic(false)
-            ->addArgument(array(
+            ->addArgument([
                 'translator.loader_3' => new ServiceClosureArgument(new Reference('translator.loader_3')),
-            ));
+            ]);
         $container->register('translator_3', StubbedTranslator::class)
             ->setPublic(true)
             ->addArgument(new Reference('translator.loader_3_locator'))
-            ->addMethodCall('addResource', array('db', new Reference('translator.loader_3'), 'nl'))
-            ->addMethodCall('addResource', array('db', new Reference('translator.loader_3'), 'en'));
+            ->addMethodCall('addResource', ['db', new Reference('translator.loader_3'), 'nl'])
+            ->addMethodCall('addResource', ['db', new Reference('translator.loader_3'), 'en']);
 
-        $nil->setValues(array(null));
-        $container->register('bar_service', 'stdClass')->setArguments(array(new Reference('baz_service')))->setPublic(true);
+        $nil->setValues([null]);
+        $container->register('bar_service', 'stdClass')->setArguments([new Reference('baz_service')])->setPublic(true);
         $container->register('baz_service', 'stdClass')->setPublic(false);
         $container->compile();
 
@@ -733,10 +733,10 @@ public function testServiceSubscriber()
             ->setPublic(true)
             ->setAutowired(true)
             ->addArgument(new Reference(ContainerInterface::class))
-            ->addTag('container.service_subscriber', array(
+            ->addTag('container.service_subscriber', [
                 'key' => 'bar',
                 'id' => TestServiceSubscriber::class,
-            ))
+            ])
         ;
         $container->register(TestServiceSubscriber::class, TestServiceSubscriber::class)->setPublic(true);
 
@@ -758,11 +758,11 @@ public function testPrivateWithIgnoreOnInvalidReference()
             ->setPublic(false);
         $container->register('bar', 'BarClass')
             ->setPublic(true)
-            ->addMethodCall('setBaz', array(new Reference('not_invalid', SymfonyContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
+            ->addMethodCall('setBaz', [new Reference('not_invalid', SymfonyContainerInterface::IGNORE_ON_INVALID_REFERENCE)]);
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Private_With_Ignore_On_Invalid_Reference')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Private_With_Ignore_On_Invalid_Reference']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Private_With_Ignore_On_Invalid_Reference();
         $this->assertInstanceOf('BazClass', $container->get('bar')->getBaz());
@@ -771,16 +771,16 @@ public function testPrivateWithIgnoreOnInvalidReference()
     public function testArrayParameters()
     {
         $container = new ContainerBuilder();
-        $container->setParameter('array_1', array(123));
-        $container->setParameter('array_2', array(__DIR__));
+        $container->setParameter('array_1', [123]);
+        $container->setParameter('array_2', [__DIR__]);
         $container->register('bar', 'BarClass')
             ->setPublic(true)
-            ->addMethodCall('setBaz', array('%array_1%', '%array_2%', '%%array_1%%', array(123)));
+            ->addMethodCall('setBaz', ['%array_1%', '%array_2%', '%%array_1%%', [123]]);
         $container->compile();
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_array_params.php', str_replace('\\\\Dumper', '/Dumper', $dumper->dump(array('file' => self::$fixturesPath.'/php/services_array_params.php'))));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_array_params.php', str_replace('\\\\Dumper', '/Dumper', $dumper->dump(['file' => self::$fixturesPath.'/php/services_array_params.php'])));
     }
 
     public function testExpressionReferencingPrivateService()
@@ -806,7 +806,7 @@ public function testUninitializedReference()
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_uninitialized_ref.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Uninitialized_Reference')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_uninitialized_ref.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Uninitialized_Reference']));
 
         require self::$fixturesPath.'/php/services_uninitialized_ref.php';
 
@@ -820,7 +820,7 @@ public function testUninitializedReference()
         $this->assertNull($bar->closures[0]());
         $this->assertNull($bar->closures[1]());
         $this->assertNull($bar->closures[2]());
-        $this->assertSame(array(), iterator_to_array($bar->iter));
+        $this->assertSame([], iterator_to_array($bar->iter));
 
         $container = new \Symfony_DI_PhpDumper_Test_Uninitialized_Reference();
 
@@ -835,7 +835,7 @@ public function testUninitializedReference()
         $this->assertEquals(new \stdClass(), $bar->closures[0]());
         $this->assertNull($bar->closures[1]());
         $this->assertEquals(new \stdClass(), $bar->closures[2]());
-        $this->assertEquals(array('foo1' => new \stdClass(), 'foo3' => new \stdClass()), iterator_to_array($bar->iter));
+        $this->assertEquals(['foo1' => new \stdClass(), 'foo3' => new \stdClass()], iterator_to_array($bar->iter));
     }
 
     /**
@@ -848,7 +848,7 @@ public function testAlmostCircular($visibility)
         $dumper = new PhpDumper($container);
 
         $container = 'Symfony_DI_PhpDumper_Test_Almost_Circular_'.ucfirst($visibility);
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_almost_circular_'.$visibility.'.php', $dumper->dump(array('class' => $container)));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_almost_circular_'.$visibility.'.php', $dumper->dump(['class' => $container]));
 
         require self::$fixturesPath.'/php/services_almost_circular_'.$visibility.'.php';
 
@@ -860,7 +860,7 @@ public function testAlmostCircular(
10000
$visibility)
         $foo2 = $container->get('foo2');
         $this->assertSame($foo2, $foo2->bar->foobar->foo);
 
-        $this->assertSame(array(), (array) $container->get('foobar4'));
+        $this->assertSame([], (array) $container->get('foobar4'));
 
         $foo5 = $container->get('foo5');
         $this->assertSame($foo5, $foo5->bar->foo);
@@ -872,15 +872,15 @@ public function testAlmostCircular($visibility)
         $this->assertEquals(new \stdClass(), $manager);
 
         $foo6 = $container->get('foo6');
-        $this->assertEquals((object) array('bar6' => (object) array()), $foo6);
+        $this->assertEquals((object) ['bar6' => (object) []], $foo6);
 
         $this->assertInstanceOf(\stdClass::class, $container->get('root'));
     }
 
     public function provideAlmostCircular()
     {
-        yield array('public');
-        yield array('private');
+        yield ['public'];
+        yield ['private'];
     }
 
     public function testDeepServiceGraph()
@@ -895,14 +895,14 @@ public function testDeepServiceGraph()
         $dumper = new PhpDumper($container);
         $dumper->dump();
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_deep_graph.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Deep_Graph')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_deep_graph.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Deep_Graph']));
 
         require self::$fixturesPath.'/php/services_deep_graph.php';
 
         $container = new \Symfony_DI_PhpDumper_Test_Deep_Graph();
 
         $this->assertInstanceOf(FooForDeepGraph::class, $container->get('foo'));
-        $this->assertEquals((object) array('p2' => (object) array('p3' => (object) array())), $container->get('foo')->bClone);
+        $this->assertEquals((object) ['p2' => (object) ['p3' => (object) []]], $container->get('foo')->bClone);
     }
 
     public function testInlineSelfRef()
@@ -924,7 +924,7 @@ public function testInlineSelfRef()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_inline_self_ref.php', $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Inline_Self_Ref')));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_inline_self_ref.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Inline_Self_Ref']));
     }
 
     public function testHotPathOptimizations()
@@ -934,7 +934,7 @@ public function testHotPathOptimizations()
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $dump = $dumper->dump(array('hot_path_tag' => 'container.hot_path', 'inline_class_loader_parameter' => 'inline_requires', 'file' => self::$fixturesPath.'/php/services_inline_requires.php'));
+        $dump = $dumper->dump(['hot_path_tag' => 'container.hot_path', 'inline_class_loader_parameter' => 'inline_requires', 'file' => self::$fixturesPath.'/php/services_inline_requires.php']);
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace("'\\\\includes\\\\HotPath\\\\", "'/includes/HotPath/", $dump);
         }
@@ -949,7 +949,7 @@ public function testDumpHandlesLiteralClassWithRootNamespace()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Literal_Class_With_Root_Namespace')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Literal_Class_With_Root_Namespace']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Literal_Class_With_Root_Namespace();
 
@@ -958,23 +958,23 @@ public function testDumpHandlesLiteralClassWithRootNamespace()
 
     public function testDumpHandlesObjectClassNames()
     {
-        $container = new ContainerBuilder(new ParameterBag(array(
+        $container = new ContainerBuilder(new ParameterBag([
             'class' => 'stdClass',
-        )));
+        ]));
 
         $container->setDefinition('foo', new Definition(new Parameter('class')));
-        $container->setDefinition('bar', new Definition('stdClass', array(
+        $container->setDefinition('bar', new Definition('stdClass', [
             new Reference('foo'),
-        )))->setPublic(true);
+        ]))->setPublic(true);
 
         $container->setParameter('inline_requires', true);
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array(
+        eval('?>'.$dumper->dump([
             'class' => 'Symfony_DI_PhpDumper_Test_Object_Class_Name',
             'inline_class_loader_parameter' => 'inline_requires',
-        )));
+        ]));
 
         $container = new \Symfony_DI_PhpDumper_Test_Object_Class_Name();
 
@@ -991,17 +991,17 @@ public function testUninitializedSyntheticReference()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array(
+        eval('?>'.$dumper->dump([
             'class' => 'Symfony_DI_PhpDumper_Test_UninitializedSyntheticReference',
             'inline_class_loader_parameter' => 'inline_requires',
-        )));
+        ]));
 
         $container = new \Symfony_DI_PhpDumper_Test_UninitializedSyntheticReference();
 
-        $this->assertEquals((object) array('foo' => null), $container->get('bar'));
+        $this->assertEquals((object) ['foo' => null], $container->get('bar'));
 
-        $container->set('foo', (object) array(123));
-        $this->assertEquals((object) array('foo' => (object) array(123)), $container->get('bar'));
+        $container->set('foo', (object) [123]);
+        $this->assertEquals((object) ['foo' => (object) [123]], $container->get('bar'));
     }
 
     public function testAdawsonContainer()
@@ -1035,7 +1035,7 @@ public function testPrivateServiceTriggersDeprecation()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Private_Service_Triggers_Deprecation')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Private_Service_Triggers_Deprecation']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Private_Service_Triggers_Deprecation();
 
@@ -1044,11 +1044,11 @@ public function testPrivateServiceTriggersDeprecation()
 
     public function testParameterWithMixedCase()
     {
-        $container = new ContainerBuilder(new ParameterBag(array('Foo' => 'bar', 'BAR' => 'foo')));
+        $container = new ContainerBuilder(new ParameterBag(['Foo' => 'bar', 'BAR' => 'foo']));
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Parameter_With_Mixed_Case')));
+        eval('?>'.$dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_Parameter_With_Mixed_Case']));
 
         $container = new \Symfony_DI_PhpDumper_Test_Parameter_With_Mixed_Case();
 
@@ -1066,7 +1066,7 @@ public function testErroredDefinition()
         $container->setParameter('foo_bar', 'foo_bar');
         $container->compile();
         $dumper = new PhpDumper($container);
-        $dump = $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Errored_Definition'));
+        $dump = $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Errored_Definition']);
         $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_errored_definition.php', str_replace(str_replace('\\', '\\\\', self::$fixturesPath.\DIRECTORY_SEPARATOR.'includes'.\DIRECTORY_SEPARATOR), '%path%', $dump));
         eval('?>'.$dump);
 
@@ -1084,7 +1084,7 @@ public function getEnv($prefix, $name, \Closure $getEnv)
 
     public static function getProvidedTypes()
     {
-        return array('rot13' => 'string');
+        return ['rot13' => 'string'];
     }
 }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php b/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
index 79b3e47c79de..b1b240316dc2 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
@@ -31,16 +31,16 @@ public function testGetEnvString($value, $processed)
 
     public function validStrings()
     {
-        return array(
-            array('hello', 'hello'),
-            array('true', 'true'),
-            array('false', 'false'),
-            array('null', 'null'),
-            array('1', '1'),
-            array('0', '0'),
-            array('1.1', '1.1'),
-            array('1e1', '1e1'),
-        );
+        return [
+            ['hello', 'hello'],
+            ['true', 'true'],
+            ['false', 'false'],
+            ['null', 'null'],
+            ['1', '1'],
+            ['0', '0'],
+            ['1.1', '1.1'],
+            ['1e1', '1e1'],
+        ];
     }
 
     /**
@@ -61,15 +61,15 @@ public function testGetEnvBool($value, $processed)
 
     public function validBools()
     {
-        return array(
-            array('true', true),
-            array('false', false),
-            array('null', false),
-            array('1', true),
-            array('0', false),
-            array('1.1', true),
-            array('1e1', true),
-        );
+        return [
+            ['true', true],
+            ['false', false],
+            ['null', false],
+            ['1', true],
+            ['0', false],
+            ['1.1', true],
+            ['1e1', true],
+        ];
     }
 
     /**
@@ -90,11 +90,11 @@ public function testGetEnvInt($value, $processed)
 
     public function validInts()
     {
-        return array(
-            array('1', 1),
-            array('1.1', 1),
-            array('1e1', 10),
-        );
+        return [
+            ['1', 1],
+            ['1.1', 1],
+            ['1e1', 10],
+        ];
     }
 
     /**
@@ -115,11 +115,11 @@ public function testGetEnvIntInvalid($value)
 
     public function invalidInts()
     {
-        return array(
-            array('foo'),
-            array('true'),
-            array('null'),
-        );
+        return [
+            ['foo'],
+            ['true'],
+            ['null'],
+        ];
     }
 
     /**
@@ -140,11 +140,11 @@ public function testGetEnvFloat($value, $processed)
 
     public function validFloats()
     {
-        return array(
-            array('1', 1.0),
-            array('1.1', 1.1),
-            array('1e1', 10.0),
-        );
+        return [
+            ['1', 1.0],
+            ['1.1', 1.1],
+            ['1e1', 10.0],
+        ];
     }
 
     /**
@@ -165,11 +165,11 @@ public function testGetEnvFloatInvalid($value)
 
     public function invalidFloats()
     {
-        return array(
-            array('foo'),
-            array('true'),
-            array('null'),
-        );
+        return [
+            ['foo'],
+            ['true'],
+            ['null'],
+        ];
     }
 
     /**
@@ -190,10 +190,10 @@ public function testGetEnvConst($value, $processed)
 
     public function validConsts()
     {
-        return array(
-            array('Symfony\Component\DependencyInjection\Tests\EnvVarProcessorTest::TEST_CONST', self::TEST_CONST),
-            array('E_ERROR', E_ERROR),
-        );
+        return [
+            ['Symfony\Component\DependencyInjection\Tests\EnvVarProcessorTest::TEST_CONST', self::TEST_CONST],
+            ['E_ERROR', E_ERROR],
+        ];
     }
 
     /**
@@ -214,10 +214,10 @@ public function testGetEnvConstInvalid($value)
 
     public function invalidConsts()
     {
-        return array(
-            array('Symfony\Component\DependencyInjection\Tests\EnvVarProcessorTest::UNDEFINED_CONST'),
-            array('UNDEFINED_CONST'),
-        );
+        return [
+            ['Symfony\Component\DependencyInjection\Tests\EnvVarProcessorTest::UNDEFINED_CONST'],
+            ['UNDEFINED_CONST'],
+        ];
     }
 
     public function testGetEnvBase64()
@@ -251,11 +251,11 @@ public function testGetEnvJson($value, $processed)
 
     public function validJson()
     {
-        return array(
-            array('[1]', array(1)),
-            array('{"key": "value"}', array('key' => 'value')),
-            array(null, null),
-        );
+        return [
+            ['[1]', [1]],
+            ['{"key": "value"}', ['key' => 'value']],
+            [null, null],
+        ];
     }
 
     /**
@@ -291,13 +291,13 @@ public function testGetEnvJsonOther($value)
 
     public function otherJsonValues()
     {
-        return array(
-            array(1),
-            array(1.1),
-            array(true),
-            array(false),
-            array('foo'),
-        );
+        return [
+            [1],
+            [1.1],
+            [true],
+            [false],
+            ['foo'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/anonymous.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/anonymous.php
index c8164d0741c7..27fc96fc9a40 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/anonymous.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/anonymous.php
@@ -13,9 +13,9 @@
 
     $s->set(null, StdClassDecorator::class)
         ->decorate('decorated', 'decorator42')
-        ->args(array(ref('decorator42')));
+        ->args([ref('decorator42')]);
 
-    $s->set('listener_aggregator', FooClass::class)->public()->args(array(tagged('listener')));
+    $s->set('listener_aggregator', FooClass::class)->public()->args([tagged('listener')]);
 
     $s->set(null, stdClass::class)->tag('listener');
 };
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/object.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/object.php
index d8e3828e5573..daf4682bf7ef 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/object.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/object.php
@@ -9,6 +9,6 @@ public function __invoke(ContainerConfigurator $c)
     {
         $s = $c->services();
         $s->set(BarService::class)
-            ->args(array(inline('FooClass')));
+            ->args([inline('FooClass')]);
     }
 };
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/services9.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/services9.php
index 9d8537bd3128..4a7172b46c76 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/services9.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/services9.php
@@ -131,7 +131,7 @@
         ->args([tagged('foo')]);
 
     $s->set('runtime_error', 'stdClass')
-        ->args(array(new Reference('errored_definition', ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE)))
+        ->args([new Reference('errored_definition', ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE)])
         ->public();
     $s->set('errored_definition', 'stdClass')->private();
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container8.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container8.php
index 31e6baab3240..26d436b4d5c9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container8.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container8.php
@@ -3,14 +3,14 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
 
-$container = new ContainerBuilder(new ParameterBag(array(
+$container = new ContainerBuilder(new ParameterBag([
     'foo' => '%baz%',
     'baz' => 'bar',
     'bar' => 'foo is %%foo bar',
     'escape' => '@escapeme',
-    'values' => array(true, false, null, 0, 1000.3, 'true', 'false', 'null'),
+    'values' => [true, false, null, 0, 1000.3, 'true', 'false', 'null'],
     'binary' => "\xf0\xf0\xf0\xf0",
     'binary-control-char' => "This is a Bell char \x07",
-)));
+]));
 
 return $container;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
index a6b9962b3d46..d56f6fdf5630 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
@@ -19,26 +19,26 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithoutArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         parent::__construct();
         $this->parameterBag = null;
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -54,9 +54,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
index e513fd721914..daa7102ff7c1 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
@@ -19,23 +19,23 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithMandatoryArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -51,9 +51,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
index 84986f163868..45aab35eb183 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
@@ -19,26 +19,26 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithOptionalArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         parent::__construct();
         $this->parameterBag = null;
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -54,9 +54,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
index 0a4975b7da39..ab8c816e66cb 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
@@ -19,23 +19,23 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\NoConstructorContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -51,9 +51,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
index a04d80affcec..ed34a0af54a1 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
@@ -19,23 +19,23 @@
 class Container extends \Symfony\Component\DependencyInjection\Dump\AbstractContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -51,9 +51,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
index f25c59b81596..4c15bfa7e1b5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
@@ -17,23 +17,23 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -49,9 +49,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
index 19e4f9c5cb18..094f8d9d05f2 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
@@ -17,28 +17,28 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -54,10 +54,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -67,7 +67,7 @@ public function getRemovedIds()
      */
     protected function getTestService()
     {
-        return $this->services['test'] = new \stdClass(array('only dot' => '.', 'concatenation as value' => '.\'\'.', 'concatenation from the start value' => '\'\'.', '.' => 'dot as a key', '.\'\'.' => 'concatenation as a key', '\'\'.' => 'concatenation from the start key', 'optimize concatenation' => 'string1-string2', 'optimize concatenation with empty string' => 'string1string2', 'optimize concatenation from the start' => 'start', 'optimize concatenation at the end' => 'end', 'new line' => 'string with '."\n".'new line'));
+        return $this->services['test'] = new \stdClass(['only dot' => '.', 'concatenation as value' => '.\'\'.', 'concatenation from the start value' => '\'\'.', '.' => 'dot as a key', '.\'\'.' => 'concatenation as a key', '\'\'.' => 'concatenation from the start key', 'optimize concatenation' => 'string1-string2', 'optimize concatenation with empty string' => 'string1string2', 'optimize concatenation from the start' => 'start', 'optimize concatenation at the end' => 'end', 'new line' => 'string with '."\n".'new line']);
     }
 
     public function getParameter($name)
@@ -109,8 +109,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -133,9 +133,9 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'empty_value' => '',
             'some_string' => '-',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
index c64a2130de49..887e5d28f10d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
@@ -17,12 +17,12 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
@@ -32,17 +32,17 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -58,10 +58,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -71,7 +71,7 @@ public function getRemovedIds()
      */
     protected function getTestService()
     {
-        return $this->services['test'] = new \stdClass(('wiz'.$this->targetDirs[1]), array(('wiz'.$this->targetDirs[1]) => ($this->targetDirs[2].'/')));
+        return $this->services['test'] = new \stdClass(('wiz'.$this->targetDirs[1]), [('wiz'.$this->targetDirs[1]) => ($this->targetDirs[2].'/')]);
     }
 
     public function getParameter($name)
@@ -113,11 +113,11 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'foo' => false,
         'buz' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -147,9 +147,9 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'bar' => __DIR__,
             'baz' => (__DIR__.'/PhpDumperTest.php'),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
index 8c90280d272a..d40f557166d4 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
@@ -17,26 +17,26 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -52,11 +52,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
index 91880ff3074a..3937bd0e8d97 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
@@ -17,29 +17,29 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'service_from_anonymous_factory' => 'getServiceFromAnonymousFactoryService',
             'service_with_method_call_and_factory' => 'getServiceWithMethodCallAndFactoryService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -55,10 +55,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -124,10 +124,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'foo' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -156,8 +156,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(FOO)' => 'Bar\\FaooClass',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
index 090a77dd3c2c..f210d94a25a5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
@@ -17,26 +17,26 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -52,10 +52,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
index 53c0242a8ad1..dced22e52dfa 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
@@ -17,12 +17,12 @@
 class Symfony_DI_PhpDumper_Test_EnvParameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
@@ -32,18 +32,18 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -59,10 +59,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -126,14 +126,14 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'bar' => false,
         'baz' => false,
         'json' => false,
         'db_dsn' => false,
         'env(json_file)' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -166,10 +166,10 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'project_dir' => '/foo/bar',
             'env(FOO)' => 'foo',
             'env(DB)' => 'sqlite://%project_dir%/var/data.db',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
index 1c70b0ee8d06..791c1de585f8 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
@@ -17,27 +17,27 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'Bar\\Foo' => 'getFooService',
             'Foo\\Foo' => 'getFoo2Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -53,10 +53,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
index 5e809b845a28..7e05e0f0351b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
@@ -17,25 +17,25 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -51,10 +51,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function getParameter($name)
@@ -96,8 +96,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -120,12 +120,12 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'foo' => 'bar',
             'baz' => 'bar',
             'bar' => 'foo is %foo bar',
             'escape' => '@escapeme',
-            'values' => array(
+            'values' => [
                 0 => true,
                 1 => false,
                 2 => NULL,
@@ -134,9 +134,9 @@ protected function getDefaultParameters()
                 5 => 'true',
                 6 => 'false',
                 7 => 'null',
-            ),
+            ],
             'binary' => '����',
             'binary-control-char' => 'This is a Bell char ',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
index 417480652ffe..4a0b82f96c9f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
@@ -17,22 +17,22 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->syntheticIds = array(
+        $this->services = $this->privates = [];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'BAR' => 'getBARService',
             'BAR2' => 'getBAR2Service',
             'bar' => 'getBar3Service',
@@ -56,17 +56,17 @@ public function __construct()
             'runtime_error' => 'getRuntimeErrorService',
             'service_from_static_method' => 'getServiceFromStaticMethodService',
             'tagged_iterator' => 'getTaggedIteratorService',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
             'decorated' => 'decorator_service_with_name',
-        );
+        ];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -82,7 +82,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'configurator_service' => true,
@@ -94,7 +94,7 @@ public function getRemovedIds()
             'inlined' => true,
             'new_factory' => true,
             'tagged_iterator_foo' => true,
-        );
+        ];
     }
 
     /**
@@ -255,11 +255,11 @@ protected function getFooService()
     {
         $a = ($this->services['foo.baz'] ?? $this->getFoo_BazService());
 
-        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array('bar' => 'foo is bar', 'foobar' => 'bar'), true, $this);
+        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, ['bar' => 'foo is bar', 'foobar' => 'bar'], true, $this);
 
         $instance->foo = 'bar';
         $instance->moo = $a;
-        $instance->qux = array('bar' => 'foo is bar', 'foobar' => 'bar');
+        $instance->qux = ['bar' => 'foo is bar', 'foobar' => 'bar'];
         $instance->setBar(($this->services['bar'] ?? $this->getBar3Service()));
         $instance->initialize();
         sc_configure($instance);
@@ -469,8 +469,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -493,10 +493,10 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
index 1123e095e38e..81fd2b1f40e1 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
@@ -17,27 +17,27 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'App\\Bus' => 'getBusService',
             'App\\Db' => 'getDbService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -53,7 +53,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'App\\Handler1' => true,
             'App\\Handler2' => true,
             'App\\Processor' => true,
@@ -61,7 +61,7 @@ public function getRemovedIds()
             'App\\Schema' => true,
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -77,7 +77,7 @@ protected function getBusService()
 
         $b = ($this->privates['App\Schema'] ?? $this->getSchemaService());
         $c = new \App\Registry();
-        $c->processor = array(0 => $a, 1 => $instance);
+        $c->processor = [0 => $a, 1 => $instance];
 
         $d = new \App\Processor($c, $a);
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
index 079447092de4..84b917f5eeab 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
@@ -17,17 +17,17 @@
 class Symfony_DI_PhpDumper_Test_Almost_Circular_Private extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar2' => 'getBar2Service',
             'bar3' => 'getBar3Service',
             'baz6' => 'getBaz6Service',
@@ -43,14 +43,14 @@ public function __construct()
             'manager2' => 'getManager2Service',
             'root' => 'getRootService',
             'subscriber' => 'getSubscriberService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -66,7 +66,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar' => true,
@@ -88,7 +88,7 @@ public function getRemovedIds()
             'logger2' => true,
             'multiuse1' => true,
             'subscriber2' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
index 1a14c5d4d687..7f4daec86721 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
@@ -17,17 +17,17 @@
 class Symfony_DI_PhpDumper_Test_Almost_Circular_Public extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'bar3' => 'getBar3Service',
             'bar5' => 'getBar5Service',
@@ -50,14 +50,14 @@ public function __construct()
             'manager2' => 'getManager2Service',
             'root' => 'getRootService',
             'subscriber' => 'getSubscriberService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -73,7 +73,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar2' => true,
@@ -88,7 +88,7 @@ public function getRemovedIds()
             'logger2' => true,
             'multiuse1' => true,
             'subscriber2' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
index 71ee501c6d9d..4b4f00ae1157 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
@@ -17,12 +17,12 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
@@ -32,17 +32,17 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -58,10 +58,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -117,10 +117,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'array_2' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -134,9 +134,9 @@ public function getParameterBag()
     private function getDynamicParameter($name)
     {
         switch ($name) {
-            case 'array_2': $value = array(
+            case 'array_2': $value = [
                 0 => ($this->targetDirs[2].'/Dumper'),
-            ); break;
+            ]; break;
             default: throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
         }
         $this->loadedDynamicParameters[$name] = true;
@@ -151,10 +151,10 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
-            'array_1' => array(
+        return [
+            'array_1' => [
                 0 => 123,
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
index db13b59f5d4f..c109c1a3612e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
@@ -17,25 +17,25 @@
 class Symfony_DI_PhpDumper_Test_Base64Parameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -51,10 +51,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function getParameter($name)
@@ -96,10 +96,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -128,8 +128,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => 'd29ybGQ=',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_csv_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_csv_env.php
index b32b88e81f07..9a4c8a1d6991 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_csv_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_csv_env.php
@@ -17,25 +17,25 @@
 class Symfony_DI_PhpDumper_Test_CsvParameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -51,10 +51,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function getParameter($name)
@@ -96,10 +96,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -128,8 +128,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => 'foo,bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
index 1653e6ef730f..a1101950cc87 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
@@ -17,27 +17,27 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -53,10 +53,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     protected function createProxy($class, \Closure $factory)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
index ee05e3934a40..e47d9ffe21b7 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
@@ -17,27 +17,27 @@
 class Symfony_DI_PhpDumper_Test_Deep_Graph extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -53,10 +53,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
index 4b914f206f10..93670a66201b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
@@ -17,29 +17,29 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -55,12 +55,12 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar_%env(BAR)%' => true,
             'baz_%env(BAR)%' => true,
-        );
+        ];
     }
 
     /**
@@ -80,7 +80,7 @@ protected function getBarService()
      */
   
10000
  protected function getFooService()
     {
-        return $this->services['foo'] = new \stdClass(($this->privates['bar_%env(BAR)%'] ?? ($this->privates['bar_%env(BAR)%'] = new \stdClass())), array('baz_'.$this->getEnv('string:BAR') => new \stdClass()));
+        return $this->services['foo'] = new \stdClass(($this->privates['bar_%env(BAR)%'] ?? ($this->privates['bar_%env(BAR)%'] = new \stdClass())), ['baz_'.$this->getEnv('string:BAR') => new \stdClass()]);
     }
 
     public function getParameter($name)
@@ -122,8 +122,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -146,8 +146,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(BAR)' => 'bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_errored_definition.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_errored_definition.php
index c5b90d19b2ca..7fdcdc903e11 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_errored_definition.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_errored_definition.php
@@ -17,22 +17,22 @@
 class Symfony_DI_PhpDumper_Errored_Definition extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->syntheticIds = array(
+        $this->services = $this->privates = [];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'BAR' => 'getBARService',
             'BAR2' => 'getBAR2Service',
             'bar' => 'getBar3Service',
@@ -56,17 +56,17 @@ public function __construct()
             'runtime_error' => 'getRuntimeErrorService',
             'service_from_static_method' => 'getServiceFromStaticMethodService',
             'tagged_iterator' => 'getTaggedIteratorService',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
             'decorated' => 'decorator_service_with_name',
-        );
+        ];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -82,7 +82,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'configurator_service' => true,
@@ -94,7 +94,7 @@ public function getRemovedIds()
             'inlined' => true,
             'new_factory' => true,
             'tagged_iterator_foo' => true,
-        );
+        ];
     }
 
     /**
@@ -255,11 +255,11 @@ protected function getFooService()
     {
         $a = ($this->services['foo.baz'] ?? $this->getFoo_BazService());
 
-        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array('bar' => 'foo is bar', 'foobar' => 'bar'), true, $this);
+        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, ['bar' => 'foo is bar', 'foobar' => 'bar'], true, $this);
 
         $instance->foo = 'bar';
         $instance->moo = $a;
-        $instance->qux = array('bar' => 'foo is bar', 'foobar' => 'bar');
+        $instance->qux = ['bar' => 'foo is bar', 'foobar' => 'bar'];
         $instance->setBar(($this->services['bar'] ?? $this->getBar3Service()));
         $instance->initialize();
         sc_configure($instance);
@@ -469,8 +469,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -493,11 +493,11 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
             'foo_bar' => 'foo_bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
index 11552d0fdd1c..124ec0ffe7e4 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
@@ -17,12 +17,12 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
@@ -32,14 +32,14 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\ParentNotExists' => 'getParentNotExistsService',
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C1' => 'getC1Service',
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C2' => 'getC2Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
 
         $this->privates['service_container'] = function () {
             include_once $this->targetDirs[1].'/includes/HotPath/I1.php';
@@ -51,7 +51,7 @@ public function __construct()
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -67,11 +67,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3' => true,
-        );
+        ];
     }
 
     /**
@@ -146,8 +146,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -170,8 +170,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'inline_requires' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
index e66332ec8bbe..4ed88c153191 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
@@ -17,26 +17,26 @@
 class Symfony_DI_PhpDumper_Test_Inline_Self_Ref extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'App\\Foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -52,10 +52,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_json_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_json_env.php
index de70c12a39d1..cd170b780933 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_json_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_json_env.php
@@ -17,25 +17,25 @@
 class Symfony_DI_PhpDumper_Test_JsonParameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -51,10 +51,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function getParameter($name)
@@ -96,11 +96,11 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
         'hello-bar' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -130,9 +130,9 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => '["foo","bar"]',
             'env(bar)' => 'null',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
index c70579792138..10f16c9cf142 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
@@ -17,17 +17,17 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar_service' => 'getBarServiceService',
             'foo_service' => 'getFooServiceService',
             'translator.loader_1' => 'getTranslator_Loader1Service',
@@ -36,14 +36,14 @@ public function __construct()
             'translator_1' => 'getTranslator1Service',
             'translator_2' => 'getTranslator2Service',
             'translator_3' => 'getTranslator3Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -59,14 +59,14 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'baz_service' => true,
             'translator.loader_1_locator' => true,
             'translator.loader_2_locator' => true,
             'translator.loader_3_locator' => true,
-        );
+        ];
     }
 
     /**
@@ -86,13 +86,13 @@ protected function getBarServiceService()
      */
     protected function getFooServiceService()
     {
-        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\ServiceLocator(array('bar' => function () {
+        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\ServiceLocator(['bar' => function () {
             return ($this->services['bar_service'] ?? $this->getBarServiceService());
         }, 'baz' => function (): \stdClass {
             return ($this->privates['baz_service'] ?? ($this->privates['baz_service'] = new \stdClass()));
         }, 'nil' => function () {
             return NULL;
-        }));
+        }]);
     }
 
     /**
@@ -132,9 +132,9 @@ protected function getTranslator_Loader3Service()
      */
     protected function getTranslator1Service()
     {
-        return $this->services['translator_1'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_1' => function () {
+        return $this->services['translator_1'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_1' => function () {
             return ($this->services['translator.loader_1'] ?? ($this->services['translator.loader_1'] = new \stdClass()));
-        })));
+        }]));
     }
 
     /**
@@ -144,9 +144,9 @@ protected function getTranslator1Service()
      */
     protected function getTranslator2Service()
     {
-        $this->services['translator_2'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_2' => function () {
+        $this->services['translator_2'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_2' => function () {
             return ($this->services['translator.loader_2'] ?? ($this->services['translator.loader_2'] = new \stdClass()));
-        })));
+        }]));
 
         $instance->addResource('db', ($this->services['translator.loader_2'] ?? ($this->services['translator.loader_2'] = new \stdClass())), 'nl');
 
@@ -160,9 +160,9 @@ protected function getTranslator2Service()
      */
     protected function getTranslator3Service()
     {
-        $this->services['translator_3'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_3' => function () {
+        $this->services['translator_3'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_3' => function () {
             return ($this->services['translator.loader_3'] ?? ($this->services['translator.loader_3'] = new \stdClass()));
-        })));
+        }]));
 
         $a = ($this->services['translator.loader_3'] ?? ($this->services['translator.loader_3'] = new \stdClass()));
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
index cd5707ef297b..8f8989af4fff 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
@@ -17,26 +17,26 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -52,11 +52,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo' => true,
-        );
+        ];
     }
 
     protected function createProxy($class, \Closure $factory)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
index 7a55fab63399..b4ffa69ed443 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
@@ -17,27 +17,27 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar_service' => 'getBarServiceService',
             'foo_service' => 'getFooServiceService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -53,11 +53,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'baz_service' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
index 0e9686f0f5e3..a98d6b133d14 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
@@ -17,26 +17,26 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'public_foo' => 'getPublicFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -52,12 +52,12 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'private_bar' => true,
             'private_foo' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
index 12fc940a461b..87cf3e3744a4 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
@@ -17,29 +17,29 @@
 class Symfony_DI_PhpDumper_Test_Rot13Parameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor' => 'getRot13EnvVarProcessorService',
             'container.env_var_processors_locator' => 'getContainer_EnvVarProcessorsLocatorService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -55,10 +55,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -78,9 +78,9 @@ protected function getRot13EnvVarProcessorService()
      */
     protected function getContainer_EnvVarProcessorsLocatorService()
     {
-        return $this->services['container.env_var_processors_locator'] = new \Symfony\Component\DependencyInjection\ServiceLocator(array('rot13' => function () {
+        return $this->services['container.env_var_processors_locator'] = new \Symfony\Component\DependencyInjection\ServiceLocator(['rot13' => function () {
             return ($this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor'] ?? ($this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor'] = new \Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor()));
-        }));
+        }]);
     }
 
     public function getParameter($name)
@@ -122,10 +122,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -154,8 +154,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => 'jbeyq',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
index bc19940bb3b1..ee41a413d2d5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
@@ -17,27 +17,27 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => 'getTestServiceSubscriberService',
             'foo_service' => 'getFooServiceService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -53,13 +53,13 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             '.service_locator.ljJrY4L' => true,
             '.service_locator.ljJrY4L.foo_service' => true,
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => true,
-        );
+        ];
     }
 
     /**
@@ -79,7 +79,7 @@ protected function getTestServiceSubscriberService()
      */
     protected function getFooServiceService()
     {
-        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber((new \Symfony\Component\DependencyInjection\ServiceLocator(array('Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => function (): ?\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition {
+        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber((new \Symfony\Component\DependencyInjection\ServiceLocator(['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => function (): ?\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition {
             return ($this->privates['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] ?? ($this->privates['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition()));
         }, 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => function (): \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber {
             return ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] ?? ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber()));
@@ -87,6 +87,6 @@ protected function getFooServiceService()
             return ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] ?? ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber()));
         }, 'baz' => function (): ?\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition {
             return ($this->privates['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] ?? ($this->privates['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition()));
-        })))->withContext('foo_service', $this));
+        }]))->withContext('foo_service', $this));
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
index b922a51fa629..8f624cf75904 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
@@ -17,27 +17,27 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'tsantos_serializer' => 'getTsantosSerializerService',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'TSantos\\Serializer\\SerializerInterface' => 'tsantos_serializer',
-        );
+        ];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -53,10 +53,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
index a2fe59acdfef..831442df8b53 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
@@ -17,28 +17,28 @@
 class Symfony_DI_PhpDumper_Test_Uninitialized_Reference extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'baz' => 'getBazService',
             'foo1' => 'getFoo1Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -54,12 +54,12 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo2' => true,
             'foo3' => true,
-        );
+        ];
     }
 
     /**
@@ -74,13 +74,13 @@ protected function getBarService()
         $instance->foo1 = ($this->services['foo1'] ?? null);
         $instance->foo2 = null;
         $instance->foo3 = ($this->privates['foo3'] ?? null);
-        $instance->closures = array(0 => function () {
+        $instance->closures = [0 => function () {
             return ($this->services['foo1'] ?? null);
         }, 1 => function () {
             return null;
         }, 2 => function () {
             return ($this->privates['foo3'] ?? null);
-        });
+        }];
         $instance->iter = new RewindableGenerator(function () {
             if (isset($this->services['foo1'])) {
                 yield 'foo1' => ($this->services['foo1'] ?? null);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
index 968abe53b673..ae3b0bd8289d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
@@ -67,14 +67,14 @@ public function testConfig($file)
 
     public function provideConfig()
     {
-        yield array('basic');
-        yield array('object');
-        yield array('defaults');
-        yield array('instanceof');
-        yield array('prototype');
-        yield array('child');
-        yield array('php7');
-        yield array('anonymous');
+        yield ['basic'];
+        yield ['object'];
+        yield ['defaults'];
+        yield ['instanceof'];
+        yield ['prototype'];
+        yield ['child'];
+        yield ['php7'];
+        yield ['anonymous'];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
index af0afa62d627..1b2b53729bf1 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
@@ -113,10 +113,10 @@ public function testLoadParameters()
         $loader->load('services2.xml');
 
         $actual = $container->getParameterBag()->all();
-        $expected = array(
+        $expected = [
             'a string',
             'foo' => 'bar',
-            'values' => array(
+            'values' => [
                 0,
                 'integer' => 4,
                 100 => null,
@@ -128,11 +128,11 @@ public function testLoadParameters()
                 'float' => 1.3,
                 1000.3,
                 'a string',
-                array('foo', 'bar'),
-            ),
-            'mixedcase' => array('MixedCaseKey' => 'value'),
+                ['foo', 'bar'],
+            ],
+            'mixedcase' => ['MixedCaseKey' => 'value'],
             'constant' => PHP_EOL,
-        );
+        ];
 
         $this->assertEquals($expected, $actual, '->load() converts XML values to PHP ones');
     }
@@ -140,19 +140,19 @@ public function testLoadParameters()
     public function testLoadImports()
     {
         $container = new ContainerBuilder();
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new IniFileLoader($container, new FileLocator(self::$fixturesPath.'/ini')),
             new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yml')),
             $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml')),
-        ));
+        ]);
         $loader->setResolver($resolver);
         $loader->load('services4.xml');
 
         $actual = $container->getParameterBag()->all();
-        $expected = array(
+        $expected = [
             'a string',
             'foo' => 'bar',
-            'values' => array(
+            'values' => [
                 0,
                 'integer' => 4,
                 100 => null,
@@ -164,15 +164,15 @@ public function testLoadImports()
                 'float' => 1.3,
                 1000.3,
                 'a string',
-                array('foo', 'bar'),
-            ),
-            'mixedcase' => array('MixedCaseKey' => 'value'),
+                ['foo', 'bar'],
+            ],
+            'mixedcase' => ['MixedCaseKey' => 'value'],
             'constant' => PHP_EOL,
             'bar' => '%foo%',
             'imported_from_ini' => true,
             'imported_from_yaml' => true,
             'with_wrong_ext' => 'from yaml',
-        );
+        ];
 
         $this->assertEquals(array_keys($expected), array_keys($actual), '->load() imports and merges imported files');
         $this->assertTrue($actual['imported_from_ini']);
@@ -257,16 +257,16 @@ public function testLoadServices()
         $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Definition', $services['foo'], '->load() converts <service> element to Definition instances');
         $this->assertEquals('FooClass', $services['foo']->getClass(), '->load() parses the class attribute');
         $this->assertEquals('%path%/foo.php', $services['file']->getFile(), '->load() parses the file tag');
-        $this->assertEquals(array('foo', new Reference('foo'), array(true, false)), $services['arguments']->getArguments(), '->load() parses the argument tags');
+        $this->assertEquals(['foo', new Reference('foo'), [true, false]], $services['arguments']->getArguments(), '->load() parses the argument tags');
         $this->assertEquals('sc_configure', $services['configurator1']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array(new Reference('baz'), 'configure'), $services['configurator2']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array('BazClass', 'configureStatic'), $services['configurator3']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array(array('setBar', array()), array('setBar', array(new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')))), $services['method_call1']->getMethodCalls(), '->load() parses the method_call tag');
-        $this->assertEquals(array(array('setBar', array('foo', new Reference('foo'), array(true, false)))), $services['method_call2']->getMethodCalls(), '->load() parses the method_call tag');
+        $this->assertEquals([new Reference('baz'), 'configure'], $services['configurator2']->getConfigurator(), '->load() parses the configurator tag');
+        $this->assertEquals(['BazClass', 'configureStatic'], $services['configurator3']->getConfigurator(), '->load() parses the configurator tag');
+        $this->assertEquals([['setBar', []], ['setBar', [new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')]]], $services['method_call1']->getMethodCalls(), '->load() parses the method_call tag');
+        $this->assertEquals([['setBar', ['foo', new Reference('foo'), [true, false]]]], $services['method_call2']->getMethodCalls(), '->load() parses the method_call tag');
         $this->assertEquals('factory', $services['new_factory1']->getFactory(), '->load() parses the factory tag');
-        $this->assertEquals(array(new Reference('baz'), 'getClass'), $services['new_factory2']->getFactory(), '->load() parses the factory tag');
-        $this->assertEquals(array('BazClass', 'getInstance'), $services['new_factory3']->getFactory(), '->load() parses the factory tag');
-        $this->assertSame(array(null, 'getInstance'), $services['new_factory4']->getFactory(), '->load() accepts factory tag without class');
+        $this->assertEquals([new Reference('baz'), 'getClass'], $services['new_factory2']->getFactory(), '->load() parses the factory tag');
+        $this->assertEquals(['BazClass', 'getInstance'], $services['new_factory3']->getFactory(), '->load() parses the factory tag');
+        $this->assertSame([null, 'getInstance'], $services['new_factory4']->getFactory(), '->load() accepts factory tag without class');
 
         $aliases = $container->getAliases();
         $this->assertArrayHasKey('alias_for_foo', $aliases, '->load() parses <service> elements');
@@ -276,9 +276,9 @@ public function testLoadServices()
         $this->assertEquals('foo', (string) $aliases['another_alias_for_foo']);
         $this->assertFalse($aliases['another_alias_for_foo']->isPublic());
 
-        $this->assertEquals(array('decorated', null, 0), $services['decorator_service']->getDecoratedService());
-        $this->assertEquals(array('decorated', 'decorated.pif-pouf', 0), $services['decorator_service_with_name']->getDecoratedService());
-        $this->assertEquals(array('decorated', 'decorated.pif-pouf', 5), $services['decorator_service_with_name_and_priority']->getDecoratedService());
+        $this->assertEquals(['decorated', null, 0], $services['decorator_service']->getDecoratedService());
+        $this->assertEquals(['decorated', 'decorated.pif-pouf', 0], $services['decorator_service_with_name']->getDecoratedService());
+        $this->assertEquals(['decorated', 'decorated.pif-pouf', 5], $services['decorator_service_with_name_and_priority']->getDecoratedService());
     }
 
     public function testParsesIteratorArgument()
@@ -289,7 +289,7 @@ public function testParsesIteratorArgument()
 
         $lazyDefinition = $container->getDefinition('lazy_context');
 
-        $this->assertEquals(array(new IteratorArgument(array('k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container'))), new IteratorArgument(array())), $lazyDefinition->getArguments(), '->load() parses lazy arguments');
+        $this->assertEquals([new IteratorArgument(['k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container')]), new IteratorArgument([])], $lazyDefinition->getArguments(), '->load() parses lazy arguments');
     }
 
     public function testParsesTags()
@@ -359,27 +359,27 @@ public function testConvertDomElementToArray()
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo foo="bar" />');
-        $this->assertEquals(array('foo' => 'bar'), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => 'bar'], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo>bar</foo></foo>');
-        $this->assertEquals(array('foo' => 'bar'), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => 'bar'], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo>bar<foo>bar</foo></foo></foo>');
-        $this->assertEquals(array('foo' => array('value' => 'bar', 'foo' => 'bar')), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => ['value' => 'bar', 'foo' => 'bar']], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo></foo></foo>');
-        $this->assertEquals(array('foo' => null), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => null], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo><!-- foo --></foo></foo>');
-        $this->assertEquals(array('foo' => null), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => null], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
 
         $doc = new \DOMDocument('1.0');
         $doc->loadXML('<foo><foo foo="bar"/><foo foo="bar"/></foo>');
-        $this->assertEquals(array('foo' => array(array('foo' => 'bar'), array('foo' => 'bar'))), XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
+        $this->assertEquals(['foo' => [['foo' => 'bar'], ['foo' => 'bar']]], XmlFileLoader::convertDomElementToArray($doc->documentElement), '::convertDomElementToArray() converts a \DomElement to an array');
     }
 
     public function testExtensions()
@@ -533,7 +533,7 @@ public function testXmlNamespaces()
 
         $this->assertArrayHasKey('foo', $services, '->load() parses <srv:service> elements');
         $this->assertCount(1, $services['foo']->getTag('foo.tag'), '->load parses <srv:tag> elements');
-        $this->assertEquals(array(array('setBar', array('foo'))), $services['foo']->getMethodCalls(), '->load() parses the <srv:call> tag');
+        $this->assertEquals([['setBar', ['foo']]], $services['foo']->getMethodCalls(), '->load() parses the <srv:call> tag');
     }
 
     public function testLoadIndexedArguments()
@@ -542,7 +542,7 @@ public function testLoadIndexedArguments()
         $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml'));
         $loader->load('services14.xml');
 
-        $this->assertEquals(array('index_0' => 'app'), $container->findDefinition('logger')->getArguments());
+        $this->assertEquals(['index_0' => 'app'], $container->findDefinition('logger')->getArguments());
     }
 
     public function testLoadInlinedServices()
@@ -606,7 +606,7 @@ public function testPrototype()
 
         $ids = array_keys($container->getDefinitions());
         sort($ids);
-        $this->assertSame(array(Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'), $ids);
+        $this->assertSame([Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'], $ids);
 
         $resources = $container->getResources();
 
@@ -638,7 +638,7 @@ public function testArgumentWithKeyOutsideCollection()
         $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml'));
         $loader->load('with_key_outside_collection.xml');
 
-        $this->assertSame(array('type' => 'foo', 'bar'), $container->getDefinition('foo')->getArguments());
+        $this->assertSame(['type' => 'foo', 'bar'], $container->getDefinition('foo')->getArguments());
     }
 
     public function testDefaults()
@@ -648,7 +648,7 @@ public function testDefaults()
         $loader->load('services28.xml');
 
         $this->assertFalse($container->getDefinition('with_defaults')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('with_defaults')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('with_defaults')->getTags());
         $this->assertTrue($container->getDefinition('with_defaults')->isAutowired());
         $this->assertArrayNotHasKey('public', $container->getDefinition('with_defaults')->getChanges());
         $this->assertArrayNotHasKey('autowire', $container->getDefinition('with_defaults')->getChanges());
@@ -657,12 +657,12 @@ public function testDefaults()
 
         $this->assertTrue($container->getDefinition('no_defaults')->isPublic());
 
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('no_defaults')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('no_defaults')->getTags());
 
         $this->assertFalse($container->getDefinition('no_defaults')->isAutowired());
 
         $this->assertTrue($container->getDefinition('child_def')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('child_def')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('child_def')->getTags());
         $this->assertFalse($container->getDefinition('child_def')->isAutowired());
 
         $definitions = $container->getDefinitions();
@@ -673,7 +673,7 @@ public function testDefaults()
         $this->assertSame('bar', key($definitions));
         $this->assertTrue($anonymous->isPublic());
         $this->assertTrue($anonymous->isAutowired());
-        $this->assertSame(array('foo' => array(array())), $anonymous->getTags());
+        $this->assertSame(['foo' => [[]]], $anonymous->getTags());
     }
 
     public function testNamedArguments()
@@ -682,12 +682,12 @@ public function testNamedArguments()
         $loader = new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml'));
         $loader->load('services_named_args.xml');
 
-        $this->assertEquals(array('$apiKey' => 'ABCD', CaseSensitiveClass::class => null), $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
+        $this->assertEquals(['$apiKey' => 'ABCD', CaseSensitiveClass::class => null], $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
 
         $container->compile();
 
-        $this->assertEquals(array(null, 'ABCD'), $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
-        $this->assertEquals(array(array('setApiKey', array('123'))), $container->getDefinition(NamedArgumentsDummy::class)->getMethodCalls());
+        $this->assertEquals([null, 'ABCD'], $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
+        $this->assertEquals([['setApiKey', ['123']]], $container->getDefinition(NamedArgumentsDummy::class)->getMethodCalls());
     }
 
     public function testInstanceof()
@@ -700,7 +700,7 @@ public function testInstanceof()
         $definition = $container->getDefinition(Bar::class);
         $this->assertTrue($definition->isAutowired());
         $this->assertTrue($definition->isLazy());
-        $this->assertSame(array('foo' => array(array()), 'bar' => array(array())), $definition->getTags());
+        $this->assertSame(['foo' => [[]], 'bar' => [[]]], $definition->getTags());
     }
 
     /**
@@ -772,30 +772,30 @@ public function testBindings()
         $container->compile();
 
         $definition = $container->getDefinition('bar');
-        $this->assertEquals(array(
+        $this->assertEquals([
             'NonExistent' => null,
             BarInterface::class => new Reference(Bar::class),
-            '$foo' => array(null),
+            '$foo' => [null],
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
-        $this->assertEquals(array(
+        ], array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        $this->assertEquals([
             'quz',
             null,
             new Reference(Bar::class),
-            array(null),
-        ), $definition->getArguments());
+            [null],
+        ], $definition->getArguments());
 
         $definition = $container->getDefinition(Bar::class);
-        $this->assertEquals(array(
+        $this->assertEquals([
             null,
             'factory',
-        ), $definition->getArguments());
-        $this->assertEquals(array(
+        ], $definition->getArguments());
+        $this->assertEquals([
             'NonExistent' => null,
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        ], array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
     }
 
     public function testTsantosContainer()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
index 9e13d5bbdd96..aad3dbda1c9f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
@@ -84,17 +84,17 @@ public function testLoadInvalidFile($file)
 
     public function provideInvalidFiles()
     {
-        return array(
-            array('bad_parameters'),
-            array('bad_imports'),
-            array('bad_import'),
-            array('bad_services'),
-            array('bad_service'),
-            array('bad_calls'),
-            array('bad_format'),
-            array('nonvalid1'),
-            array('nonvalid2'),
-        );
+        return [
+            ['bad_parameters'],
+            ['bad_imports'],
+            ['bad_import'],
+            ['bad_services'],
+            ['bad_service'],
+            ['bad_calls'],
+            ['bad_format'],
+            ['nonvalid1'],
+            ['nonvalid2'],
+        ];
     }
 
     public function testLoadParameters()
@@ -102,33 +102,33 @@ public function testLoadParameters()
         $container = new ContainerBuilder();
         $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml'));
         $loader->load('services2.yml');
-        $this->assertEquals(array('foo' => 'bar', 'mixedcase' => array('MixedCaseKey' => 'value'), 'values' => array(true, false, 0, 1000.3, PHP_INT_MAX), 'bar' => 'foo', 'escape' => '@escapeme', 'foo_bar' => new Reference('foo_bar')), $container->getParameterBag()->all(), '->load() converts YAML keys to lowercase');
+        $this->assertEquals(['foo' => 'bar', 'mixedcase' => ['MixedCaseKey' => 'value'], 'values' => [true, false, 0, 1000.3, PHP_INT_MAX], 'bar' => 'foo', 'escape' => '@escapeme', 'foo_bar' => new Reference('foo_bar')], $container->getParameterBag()->all(), '->load() converts YAML keys to lowercase');
     }
 
     public function testLoadImports()
     {
         $container = new ContainerBuilder();
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new IniFileLoader($container, new FileLocator(self::$fixturesPath.'/ini')),
             new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml')),
             new PhpFileLoader($container, new FileLocator(self::$fixturesPath.'/php')),
             $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml')),
-        ));
+        ]);
         $loader->setResolver($resolver);
         $loader->load('services4.yml');
 
         $actual = $container->getParameterBag()->all();
-        $expected = array(
+        $expected = [
             'foo' => 'bar',
-            'values' => array(true, false, PHP_INT_MAX),
+            'values' => [true, false, PHP_INT_MAX],
             'bar' => '%foo%',
             'escape' => '@escapeme',
             'foo_bar' => new Reference('foo_bar'),
-            'mixedcase' => array('MixedCaseKey' => 'value'),
+            'mixedcase' => ['MixedCaseKey' => 'value'],
             'imported_from_ini' => true,
             'imported_from_xml' => true,
             'with_wrong_ext' => 'from yaml',
-        );
+        ];
         $this->assertEquals(array_keys($expected), array_keys($actual), '->load() imports and merges imported files');
         $this->assertTrue($actual['imported_from_ini']);
 
@@ -147,17 +147,17 @@ public function testLoadServices()
         $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Definition', $services['foo'], '->load() converts service element to Definition instances');
         $this->assertEquals('FooClass', $services['foo']->getClass(), '->load() parses the class attribute');
         $this->assertEquals('%path%/foo.php', $services['file']->getFile(), '->load() parses the file tag');
-        $this->assertEquals(array('foo', new Reference('foo'), array(true, false)), $services['arguments']->getArguments(), '->load() parses the argument tags');
+        $this->assertEquals(['foo', new Reference('foo'), [true, false]], $services['arguments']->getArguments(), '->load() parses the argument tags');
         $this->assertEquals('sc_configure', $services['configurator1']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array(new Reference('baz'), 'configure'), $services['configurator2']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array('BazClass', 'configureStatic'), $services['configurator3']->getConfigurator(), '->load() parses the configurator tag');
-        $this->assertEquals(array(array('setBar', array()), array('setBar', array()), array('setBar', array(new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')))), $services['method_call1']->getMethodCalls(), '->load() parses the method_call tag');
-        $this->assertEquals(array(array('setBar', array('foo', new Reference('foo'), array(true, false)))), $services['method_call2']->getMethodCalls(), '->load() parses the method_call tag');
+        $this->assertEquals([new Reference('baz'), 'configure'], $services['configurator2']->getConfigurator(), '->load() parses the configurator tag');
+        $this->assertEquals(['BazClass', 'configureStatic'], $services['configurator3']->getConfigurator(), '->load() parses the configurator tag');
+        $this->assertEquals([['setBar', []], ['setBar', []], ['setBar', [new Expression('service("foo").foo() ~ (container.hasParameter("foo") ? parameter("foo") : "default")')]]], $services['method_call1']->getMethodCalls(), '->load() parses the method_call tag');
+        $this->assertEquals([['setBar', ['foo', new Reference('foo'), [true, false]]]], $services['method_call2']->getMethodCalls(), '->load() parses the method_call tag');
         $this->assertEquals('factory', $services['new_factory1']->getFactory(), '->load() parses the factory tag');
-        $this->assertEquals(array(new Reference('baz'), 'getClass'), $services['new_factory2']->getFactory(), '->load() parses the factory tag');
-        $this->assertEquals(array('BazClass', 'getInstance'), $services['new_factory3']->getFactory(), '->load() parses the factory tag');
-        $this->assertSame(array(null, 'getInstance'), $services['new_factory4']->getFactory(), '->load() accepts factory tag without class');
-        $this->assertEquals(array('foo', new Reference('baz')), $services['Acme\WithShortCutArgs']->getArguments(), '->load() parses short service definition');
+        $this->assertEquals([new Reference('baz'), 'getClass'], $services['new_factory2']->getFactory(), '->load() parses the factory tag');
+        $this->assertEquals(['BazClass', 'getInstance'], $services['new_factory3']->getFactory(), '->load() parses the factory tag');
+        $this->assertSame([null, 'getInstance'], $services['new_factory4']->getFactory(), '->load() accepts factory tag without class');
+        $this->assertEquals(['foo', new Reference('baz')], $services['Acme\WithShortCutArgs']->getArguments(), '->load() parses short service definition');
 
         $aliases = $container->getAliases();
         $this->assertArrayHasKey('alias_for_foo', $aliases, '->load() parses aliases');
@@ -170,9 +170,9 @@ public function testLoadServices()
         $this->assertEquals('foo', (string) $aliases['another_third_alias_for_foo']);
         $this->assertTrue($aliases['another_third_alias_for_foo']->isPublic());
 
-        $this->assertEquals(array('decorated', null, 0), $services['decorator_service']->getDecoratedService());
-        $this->assertEquals(array('decorated', 'decorated.pif-pouf', 0), $services['decorator_service_with_name']->getDecoratedService());
-        $this->assertEquals(array('decorated', 'decorated.pif-pouf', 5), $services['decorator_service_with_name_and_priority']->getDecoratedService());
+        $this->assertEquals(['decorated', null, 0], $services['decorator_service']->getDecoratedService());
+        $this->assertEquals(['decorated', 'decorated.pif-pouf', 0], $services['decorator_service_with_name']->getDecoratedService());
+        $this->assertEquals(['decorated', 'decorated.pif-pouf', 5], $services['decorator_service_with_name_and_priority']->getDecoratedService());
     }
 
     public function testLoadFactoryShortSyntax()
@@ -182,8 +182,8 @@ public function testLoadFactoryShortSyntax()
         $loader->load('services14.yml');
         $services = $container->getDefinitions();
 
-        $this->assertEquals(array(new Reference('baz'), 'getClass'), $services['factory']->getFactory(), '->load() parses the factory tag with service:method');
-        $this->assertEquals(array('FooBacFactory', 'createFooBar'), $services['factory_with_static_call']->getFactory(), '->load() parses the factory tag with Class::method');
+        $this->assertEquals([new Reference('baz'), 'getClass'], $services['factory']->getFactory(), '->load() parses the factory tag with service:method');
+        $this->assertEquals(['FooBacFactory', 'createFooBar'], $services['factory_with_static_call']->getFactory(), '->load() parses the factory tag with Class::method');
     }
 
     public function testLoadConfiguratorShortSyntax()
@@ -193,8 +193,8 @@ public function testLoadConfiguratorShortSyntax()
         $loader->load('services_configurator_short_syntax.yml');
         $services = $container->getDefinitions();
 
-        $this->assertEquals(array(new Reference('foo_bar_configurator'), 'configure'), $services['foo_bar']->getConfigurator(), '->load() parses the configurator tag with service:method');
-        $this->assertEquals(array('FooBarConfigurator', 'configureFooBar'), $services['foo_bar_with_static_call']->getConfigurator(), '->load() parses the configurator tag with Class::method');
+        $this->assertEquals([new Reference('foo_bar_configurator'), 'configure'], $services['foo_bar']->getConfigurator(), '->load() parses the configurator tag with service:method');
+        $this->assertEquals(['FooBarConfigurator', 'configureFooBar'], $services['foo_bar_with_static_call']->getConfigurator(), '->load() parses the configurator tag with Class::method');
     }
 
     public function testExtensions()
@@ -230,7 +230,7 @@ public function testExtensionWithNullConfig()
         $loader->load('null_config.yml');
         $container->compile();
 
-        $this->assertSame(array(null), $container->getParameter('project.configs'));
+        $this->assertSame([null], $container->getParameter('project.configs'));
     }
 
     public function testSupports()
@@ -296,9 +296,9 @@ public function testLoadYamlOnlyWithKeys()
         $loader->load('services21.yml');
 
         $definition = $container->getDefinition('manager');
-        $this->assertEquals(array(array('setLogger', array(new Reference('logger'))), array('setClass', array('User'))), $definition->getMethodCalls());
-        $this->assertEquals(array(true), $definition->getArguments());
-        $this->assertEquals(array('manager' => array(array('alias' => 'user'))), $definition->getTags());
+        $this->assertEquals([['setLogger', [new Reference('logger')]], ['setClass', ['User']]], $definition->getMethodCalls());
+        $this->assertEquals([true], $definition->getArguments());
+        $this->assertEquals(['manager' => [['alias' => 'user']]], $definition->getTags());
     }
 
     /**
@@ -329,7 +329,7 @@ public function testParsesIteratorArgument()
 
         $lazyDefinition = $container->getDefinition('lazy_context');
 
-        $this->assertEquals(array(new IteratorArgument(array('k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container'))), new IteratorArgument(array())), $lazyDefinition->getArguments(), '->load() parses lazy arguments');
+        $this->assertEquals([new IteratorArgument(['k1' => new Reference('foo.baz'), 'k2' => new Reference('service_container')]), new IteratorArgument([])], $lazyDefinition->getArguments(), '->load() parses lazy arguments');
     }
 
     public function testAutowire()
@@ -359,7 +359,7 @@ public function testPrototype()
 
         $ids = array_keys($container->getDefinitions());
         sort($ids);
-        $this->assertSame(array(Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'), $ids);
+        $this->assertSame([Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'], $ids);
 
         $resources = $container->getResources();
 
@@ -380,13 +380,13 @@ public func
10000
tion testPrototypeWithNamespace()
         $ids = array_keys($container->getDefinitions());
         sort($ids);
 
-        $this->assertSame(array(
+        $this->assertSame([
             Prototype\OtherDir\Component1\Dir1\Service1::class,
             Prototype\OtherDir\Component1\Dir2\Service2::class,
             Prototype\OtherDir\Component2\Dir1\Service4::class,
             Prototype\OtherDir\Component2\Dir2\Service5::class,
             'service_container',
-        ), $ids);
+        ], $ids);
 
         $this->assertTrue($container->getDefinition(Prototype\OtherDir\Component1\Dir1\Service1::class)->hasTag('foo'));
         $this->assertTrue($container->getDefinition(Prototype\OtherDir\Component2\Dir1\Service4::class)->hasTag('foo'));
@@ -417,7 +417,7 @@ public function testDefaults()
         $loader->load('services28.yml');
 
         $this->assertFalse($container->getDefinition('with_defaults')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('with_defaults')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('with_defaults')->getTags());
         $this->assertTrue($container->getDefinition('with_defaults')->isAutowired());
         $this->assertArrayNotHasKey('public', $container->getDefinition('with_defaults')->getChanges());
         $this->assertArrayNotHasKey('autowire', $container->getDefinition('with_defaults')->getChanges());
@@ -426,7 +426,7 @@ public function testDefaults()
         $this->assertFalse($container->getAlias('with_defaults_aliased_short')->isPublic());
 
         $this->assertFalse($container->getDefinition('Acme\WithShortCutArgs')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('Acme\WithShortCutArgs')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('Acme\WithShortCutArgs')->getTags());
         $this->assertTrue($container->getDefinition('Acme\WithShortCutArgs')->isAutowired());
 
         $container->compile();
@@ -435,14 +435,14 @@ public function testDefaults()
         $this->assertTrue($container->getDefinition('no_defaults')->isPublic());
 
         // foo tag is inherited from defaults
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('with_null')->getTags());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('no_defaults')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('with_null')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('no_defaults')->getTags());
 
         $this->assertTrue($container->getDefinition('with_null')->isAutowired());
         $this->assertFalse($container->getDefinition('no_defaults')->isAutowired());
 
         $this->assertTrue($container->getDefinition('child_def')->isPublic());
-        $this->assertSame(array('foo' => array(array())), $container->getDefinition('child_def')->getTags());
+        $this->assertSame(['foo' => [[]]], $container->getDefinition('child_def')->getTags());
         $this->assertFalse($container->getDefinition('child_def')->isAutowired());
     }
 
@@ -452,14 +452,14 @@ public function testNamedArguments()
         $loader = new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml'));
         $loader->load('services_named_args.yml');
 
-        $this->assertEquals(array(null, '$apiKey' => 'ABCD'), $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
-        $this->assertEquals(array('$apiKey' => 'ABCD', CaseSensitiveClass::class => null), $container->getDefinition('another_one')->getArguments());
+        $this->assertEquals([null, '$apiKey' => 'ABCD'], $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
+        $this->assertEquals(['$apiKey' => 'ABCD', CaseSensitiveClass::class => null], $container->getDefinition('another_one')->getArguments());
 
         $container->compile();
 
-        $this->assertEquals(array(null, 'ABCD'), $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
-        $this->assertEquals(array(null, 'ABCD'), $container->getDefinition('another_one')->getArguments());
-        $this->assertEquals(array(array('setApiKey', array('123'))), $container->getDefinition('another_one')->getMethodCalls());
+        $this->assertEquals([null, 'ABCD'], $container->getDefinition(NamedArgumentsDummy::class)->getArguments());
+        $this->assertEquals([null, 'ABCD'], $container->getDefinition('another_one')->getArguments());
+        $this->assertEquals([['setApiKey', ['123']]], $container->getDefinition('another_one')->getMethodCalls());
     }
 
     public function testInstanceof()
@@ -472,7 +472,7 @@ public function testInstanceof()
         $definition = $container->getDefinition(Bar::class);
         $this->assertTrue($definition->isAutowired());
         $this->assertTrue($definition->isLazy());
-        $this->assertSame(array('foo' => array(array()), 'bar' => array(array())), $definition->getTags());
+        $this->assertSame(['foo' => [[]], 'bar' => [[]]], $definition->getTags());
     }
 
     /**
@@ -714,29 +714,29 @@ public function testBindings()
         $container->compile();
 
         $definition = $container->getDefinition('bar');
-        $this->assertEquals(array(
+        $this->assertEquals([
             'NonExistent' => null,
             BarInterface::class => new Reference(Bar::class),
-            '$foo' => array(null),
+            '$foo' => [null],
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
-        $this->assertEquals(array(
+        ], array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        $this->assertEquals([
             'quz',
             null,
             new Reference(Bar::class),
-            array(null),
-        ), $definition->getArguments());
+            [null],
+        ], $definition->getArguments());
 
         $definition = $container->getDefinition(Bar::class);
-        $this->assertEquals(array(
+        $this->assertEquals([
             null,
             'factory',
-        ), $definition->getArguments());
-        $this->assertEquals(array(
+        ], $definition->getArguments());
+        $this->assertEquals([
             'NonExistent' => null,
             '$quz' => 'quz',
             '$factory' => 'factory',
-        ), array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
+        ], array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ContainerBagTest.php b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ContainerBagTest.php
index 7b9d1dc5dadc..24ed685e49cc 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ContainerBagTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ContainerBagTest.php
@@ -28,13 +28,13 @@ class ContainerBagTest extends TestCase
 
     protected function setUp()
     {
-        $this->parameterBag = new ParameterBag(array('foo' => 'value'));
+        $this->parameterBag = new ParameterBag(['foo' => 'value']);
         $this->containerBag = new ContainerBag(new Container($this->parameterBag));
     }
 
     public function testGetAllParameters()
     {
-        $this->assertSame(array('foo' => 'value'), $this->containerBag->all());
+        $this->assertSame(['foo' => 'value'], $this->containerBag->all());
     }
 
     public function testHasAParameter()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
index 3d79742ef465..071cb39ceba0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
@@ -21,36 +21,36 @@ class ParameterBagTest extends TestCase
 {
     public function testConstructor()
     {
-        $bag = new ParameterBag($parameters = array(
+        $bag = new ParameterBag($parameters = [
             'foo' => 'foo',
             'bar' => 'bar',
-        ));
+        ]);
         $this->assertEquals($parameters, $bag->all(), '__construct() takes an array of parameters as its first argument');
     }
 
     public function testClear()
     {
-        $bag = new ParameterBag($parameters = array(
+        $bag = new ParameterBag($parameters = [
             'foo' => 'foo',
             'bar' => 'bar',
-        ));
+        ]);
         $bag->clear();
-        $this->assertEquals(array(), $bag->all(), '->clear() removes all parameters');
+        $this->assertEquals([], $bag->all(), '->clear() removes all parameters');
     }
 
     public function testRemove()
     {
-        $bag = new ParameterBag(array(
+        $bag = new ParameterBag([
             'foo' => 'foo',
             'bar' => 'bar',
-        ));
+        ]);
         $bag->remove('foo');
-        $this->assertEquals(array('bar' => 'bar'), $bag->all(), '->remove() removes a parameter');
+        $this->assertEquals(['bar' => 'bar'], $bag->all(), '->remove() removes a parameter');
     }
 
     public function testGetSet()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
         $bag->set('bar', 'foo');
         $this->assertEquals('foo', $bag->get('bar'), '->set() sets the value of a new parameter');
 
@@ -71,12 +71,12 @@ public function testGetSet()
      */
     public function testGetThrowParameterNotFoundException($parameterKey, $exceptionMessage)
     {
-        $bag = new ParameterBag(array(
+        $bag = new ParameterBag([
             'foo' => 'foo',
             'bar' => 'bar',
             'baz' => 'baz',
-            'fiz' => array('bar' => array('boo' => 12)),
-        ));
+            'fiz' => ['bar' => ['boo' => 12]],
+        ]);
 
         if (method_exists($this, 'expectException')) {
             $this->expectException(ParameterNotFoundException::class);
@@ -90,32 +90,32 @@ public function testGetThrowParameterNotFoundException($parameterKey, $exception
 
     public function provideGetThrowParameterNotFoundExceptionData()
     {
-        return array(
-            array('foo1', 'You have requested a non-existent parameter "foo1". Did you mean this: "foo"?'),
-            array('bag', 'You have requested a non-existent parameter "bag". Did you mean one of these: "bar", "baz"?'),
-            array('', 'You have requested a non-existent parameter "".'),
+        return [
+            ['foo1', 'You have requested a non-existent parameter "foo1". Did you mean this: "foo"?'],
+            ['bag', 'You have requested a non-existent parameter "bag". Did you mean one of these: "bar", "baz"?'],
+            ['', 'You have requested a non-existent parameter "".'],
 
-            array('fiz.bar.boo', 'You have requested a non-existent parameter "fiz.bar.boo". You cannot access nested array items, do you want to inject "fiz" instead?'),
-        );
+            ['fiz.bar.boo', 'You have requested a non-existent parameter "fiz.bar.boo". You cannot access nested array items, do you want to inject "fiz" instead?'],
+        ];
     }
 
     public function testHas()
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
         $this->assertTrue($bag->has('foo'), '->has() returns true if a parameter is defined');
         $this->assertFalse($bag->has('bar'), '->has() returns false if a parameter is not defined');
     }
 
     public function testMixedCase()
     {
-        $bag = new ParameterBag(array(
+        $bag = new ParameterBag([
             'foo' => 'foo',
             'bar' => 'bar',
             'BAR' => 'baz',
-        ));
+        ]);
 
         $bag->remove('BAR');
-        $this->assertEquals(array('foo' => 'foo', 'bar' => 'bar'), $bag->all());
+        $this->assertEquals(['foo' => 'foo', 'bar' => 'bar'], $bag->all());
 
         $bag->set('Foo', 'baz1');
         $this->assertEquals('foo', $bag->get('foo'));
@@ -124,29 +124,29 @@ public function testMixedCase()
 
     public function testResolveValue()
     {
-        $bag = new ParameterBag(array());
+        $bag = new ParameterBag([]);
         $this->assertEquals('foo', $bag->resolveValue('foo'), '->resolveValue() returns its argument unmodified if no placeholders are found');
 
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
         $this->assertEquals('I\'m a bar', $bag->resolveValue('I\'m a %foo%'), '->resolveValue() replaces placeholders by their values');
-        $this->assertEquals(array('bar' => 'bar'), $bag->resolveValue(array('%foo%' => '%foo%')), '->resolveValue() replaces placeholders in keys and values of arrays');
-        $this->assertEquals(array('bar' => array('bar' => array('bar' => 'bar'))), $bag->resolveValue(array('%foo%' => array('%foo%' => array('%foo%' => '%foo%')))), '->resolveValue() replaces placeholders in nested arrays');
+        $this->assertEquals(['bar' => 'bar'], $bag->resolveValue(['%foo%' => '%foo%']), '->resolveValue() replaces placeholders in keys and values of arrays');
+        $this->assertEquals(['bar' => ['bar' => ['bar' => 'bar']]], $bag->resolveValue(['%foo%' => ['%foo%' => ['%foo%' => '%foo%']]]), '->resolveValue() replaces placeholders in nested arrays');
         $this->assertEquals('I\'m a %%foo%%', $bag->resolveValue('I\'m a %%foo%%'), '->resolveValue() supports % escaping by doubling it');
         $this->assertEquals('I\'m a bar %%foo bar', $bag->resolveValue('I\'m a %foo% %%foo %foo%'), '->resolveValue() supports % escaping by doubling it');
-        $this->assertEquals(array('foo' => array('bar' => array('ding' => 'I\'m a bar %%foo %%bar'))), $bag->resolveValue(array('foo' => array('bar' => array('ding' => 'I\'m a bar %%foo %%bar')))), '->resolveValue() supports % escaping by doubling it');
+        $this->assertEquals(['foo' => ['bar' => ['ding' => 'I\'m a bar %%foo %%bar']]], $bag->resolveValue(['foo' => ['bar' => ['ding' => 'I\'m a bar %%foo %%bar']]]), '->resolveValue() supports % escaping by doubling it');
 
-        $bag = new ParameterBag(array('foo' => true));
+        $bag = new ParameterBag(['foo' => true]);
         $this->assertTrue($bag->resolveValue('%foo%'), '->resolveValue() replaces arguments that are just a placeholder by their value without casting them to strings');
-        $bag = new ParameterBag(array('foo' => null));
+        $bag = new ParameterBag(['foo' => null]);
         $this->assertNull($bag->resolveValue('%foo%'), '->resolveValue() replaces arguments that are just a placeholder by their value without casting them to strings');
 
-        $bag = new ParameterBag(array('foo' => 'bar', 'baz' => '%%%foo% %foo%%% %%foo%% %%%foo%%%'));
+        $bag = new ParameterBag(['foo' => 'bar', 'baz' => '%%%foo% %foo%%% %%foo%% %%%foo%%%']);
         $this->assertEquals('%%bar bar%% %%foo%% %%bar%%', $bag->resolveValue('%baz%'), '->resolveValue() replaces params placed besides escaped %');
 
-        $bag = new ParameterBag(array('baz' => '%%s?%%s'));
+        $bag = new ParameterBag(['baz' => '%%s?%%s']);
         $this->assertEquals('%%s?%%s', $bag->resolveValue('%baz%'), '->resolveValue() is not replacing greedily');
 
-        $bag = new ParameterBag(array());
+        $bag = new ParameterBag([]);
         try {
             $bag->resolveValue('%foobar%');
             $this->fail('->resolveValue() throws an InvalidArgumentException if a placeholder references a non-existent parameter');
@@ -161,7 +161,7 @@ public function testResolveValue()
             $this->assertEquals('You have requested a non-existent parameter "foobar".', $e->getMessage(), '->resolveValue() throws a ParameterNotFoundException if a placeholder references a non-existent parameter');
         }
 
-        $bag = new ParameterBag(array('foo' => 'a %bar%', 'bar' => array()));
+        $bag = new ParameterBag(['foo' => 'a %bar%', 'bar' => []]);
         try {
             $bag->resolveValue('%foo%');
             $this->fail('->resolveValue() throws a RuntimeException when a parameter embeds another non-string parameter');
@@ -169,7 +169,7 @@ public function testResolveValue()
             $this->assertEquals('A string value must be composed of strings and/or numbers, but found parameter "bar" of type array inside string value "a %bar%".', $e->getMessage(), '->resolveValue() throws a RuntimeException when a parameter embeds another non-string parameter');
         }
 
-        $bag = new ParameterBag(array('foo' => '%bar%', 'bar' => '%foobar%', 'foobar' => '%foo%'));
+        $bag = new ParameterBag(['foo' => '%bar%', 'bar' => '%foobar%', 'foobar' => '%foo%']);
         try {
             $bag->resolveValue('%foo%');
             $this->fail('->resolveValue() throws a ParameterCircularReferenceException when a parameter has a circular reference');
@@ -177,7 +177,7 @@ public function testResolveValue()
             $this->assertEquals('Circular reference detected for parameter "foo" ("foo" > "bar" > "foobar" > "foo").', $e->getMessage(), '->resolveValue() throws a ParameterCircularReferenceException when a parameter has a circular reference');
         }
 
-        $bag = new ParameterBag(array('foo' => 'a %bar%', 'bar' => 'a %foobar%', 'foobar' => 'a %foo%'));
+        $bag = new ParameterBag(['foo' => 'a %bar%', 'bar' => 'a %foobar%', 'foobar' => 'a %foo%']);
         try {
             $bag->resolveValue('%foo%');
             $this->fail('->resolveValue() throws a ParameterCircularReferenceException when a parameter has a circular reference');
@@ -185,13 +185,13 @@ public function testResolveValue()
             $this->assertEquals('Circular reference detected for parameter "foo" ("foo" > "bar" > "foobar" > "foo").', $e->getMessage(), '->resolveValue() throws a ParameterCircularReferenceException when a parameter has a circular reference');
         }
 
-        $bag = new ParameterBag(array('host' => 'foo.bar', 'port' => 1337));
+        $bag = new ParameterBag(['host' => 'foo.bar', 'port' => 1337]);
         $this->assertEquals('foo.bar:1337', $bag->resolveValue('%host%:%port%'));
     }
 
     public function testResolveIndicatesWhyAParameterIsNeeded()
     {
-        $bag = new ParameterBag(array('foo' => '%bar%'));
+        $bag = new ParameterBag(['foo' => '%bar%']);
 
         try {
             $bag->resolve();
@@ -199,7 +199,7 @@ public function testResolveIndicatesWhyAParameterIsNeeded()
             $this->assertEquals('The parameter "foo" has a dependency on a non-existent parameter "bar".', $e->getMessage());
         }
 
-        $bag = new ParameterBag(array('foo' => '%bar%'));
+        $bag = new ParameterBag(['foo' => '%bar%']);
 
         try {
             $bag->resolve();
@@ -210,28 +210,28 @@ public function testResolveIndicatesWhyAParameterIsNeeded()
 
     public function testResolveUnescapesValue()
     {
-        $bag = new ParameterBag(array(
-            'foo' => array('bar' => array('ding' => 'I\'m a bar %%foo %%bar')),
+        $bag = new ParameterBag([
+            'foo' => ['bar' => ['ding' => 'I\'m a bar %%foo %%bar']],
             'bar' => 'I\'m a %%foo%%',
-        ));
+        ]);
 
         $bag->resolve();
 
         $this->assertEquals('I\'m a %foo%', $bag->get('bar'), '->resolveValue() supports % escaping by doubling it');
-        $this->assertEquals(array('bar' => array('ding' => 'I\'m a bar %foo %bar')), $bag->get('foo'), '->resolveValue() supports % escaping by doubling it');
+        $this->assertEquals(['bar' => ['ding' => 'I\'m a bar %foo %bar']], $bag->get('foo'), '->resolveValue() supports % escaping by doubling it');
     }
 
     public function testEscapeValue()
     {
         $bag = new ParameterBag();
 
-        $bag->add(array(
-            'foo' => $bag->escapeValue(array('bar' => array('ding' => 'I\'m a bar %foo %bar', 'zero' => null))),
+        $bag->add([
+            'foo' => $bag->escapeValue(['bar' => ['ding' => 'I\'m a bar %foo %bar', 'zero' => null]]),
             'bar' => $bag->escapeValue('I\'m a %foo%'),
-        ));
+        ]);
 
         $this->assertEquals('I\'m a %%foo%%', $bag->get('bar'), '->escapeValue() escapes % by doubling it');
-        $this->assertEquals(array('bar' => array('ding' => 'I\'m a bar %%foo %%bar', 'zero' => null)), $bag->get('foo'), '->escapeValue() escapes % by doubling it');
+        $this->assertEquals(['bar' => ['ding' => 'I\'m a bar %%foo %%bar', 'zero' => null]], $bag->get('foo'), '->escapeValue() escapes % by doubling it');
     }
 
     /**
@@ -239,7 +239,7 @@ public function testEscapeValue()
      */
     public function testResolveStringWithSpacesReturnsString($expected, $test, $description)
     {
-        $bag = new ParameterBag(array('foo' => 'bar'));
+        $bag = new ParameterBag(['foo' => 'bar']);
 
         try {
             $this->assertEquals($expected, $bag->resolveString($test), $description);
@@ -250,11 +250,11 @@ public function testResolveStringWithSpacesReturnsString($expected, $test, $desc
 
     public function stringsWithSpacesProvider()
     {
-        return array(
-            array('bar', '%foo%', 'Parameters must be wrapped by %.'),
-            array('% foo %', '% foo %', 'Parameters should not have spaces.'),
-            array('{% set my_template = "foo" %}', '{% set my_template = "foo" %}', 'Twig-like strings are not parameters.'),
-            array('50% is less than 100%', '50% is less than 100%', 'Text between % signs is allowed, if there are spaces.'),
-        );
+        return [
+            ['bar', '%foo%', 'Parameters must be wrapped by %.'],
+            ['% foo %', '% foo %', 'Parameters should not have spaces.'],
+            ['{% set my_template = "foo" %}', '{% set my_template = "foo" %}', 'Twig-like strings are not parameters.'],
+            ['50% is less than 100%', '50% is less than 100%', 'Text between % signs is allowed, if there are spaces.'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index 403f7cb10bd5..5b1be1681b66 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -30,7 +30,7 @@ class Crawler implements \Countable, \IteratorAggregate
     /**
      * @var array A map of manually registered namespaces
      */
-    private $namespaces = array();
+    private $namespaces = [];
 
     /**
      * @var string The base href value
@@ -45,7 +45,7 @@ class Crawler implements \Countable, \IteratorAggregate
     /**
      * @var \DOMElement[]
      */
-    private $nodes = array();
+    private $nodes = [];
 
     /**
      * Whether the Crawler contains HTML or XML content (used when converting CSS to XPath).
@@ -92,7 +92,7 @@ public function getBaseHref()
      */
     public function clear()
     {
-        $this->nodes = array();
+        $this->nodes = [];
         $this->document = null;
     }
 
@@ -208,7 +208,7 @@ public function addHtmlContent($content, $charset = 'UTF-8')
 
         $this->addDocument($dom);
 
-        $base = $this->filterRelativeXPath('descendant-or-self::base')->extract(array('href'));
+        $base = $this->filterRelativeXPath('descendant-or-self::base')->extract(['href']);
 
         $baseHref = current($base);
         if (\count($base) && !empty($baseHref)) {
@@ -363,7 +363,7 @@ public function eq($position)
      */
     public function each(\Closure $closure)
     {
-        $data = array();
+        $data = [];
         foreach ($this->nodes as $i => $node) {
             $data[] = $closure($this->createSubCrawler($node), $i);
         }
@@ -395,7 +395,7 @@ public function slice($offset = 0, $length = null)
      */
     public function reduce(\Closure $closure)
     {
-        $nodes = array();
+        $nodes = [];
         foreach ($this->nodes as $i => $node) {
             if (false !== $closure($this->createSubCrawler($node), $i)) {
                 $nodes[] = $node;
@@ -487,7 +487,7 @@ public function parents()
         }
 
         $node = $this->getNode(0);
-        $nodes = array();
+        $nodes = [];
 
         while ($node = $node->parentNode) {
             if (XML_ELEMENT_NODE === $node->nodeType) {
@@ -513,7 +513,7 @@ public function children()
 
         $node = $this->getNode(0)->firstChild;
 
-        return $this->createSubCrawler($node ? $this->sibling($node) : array());
+        return $this->createSubCrawler($node ? $this->sibling($node) : []);
     }
 
     /**
@@ -605,7 +605,7 @@ public function evaluate($xpath)
             throw new \LogicException('Cannot evaluate the expression on an uninitialized crawler.');
         }
 
-        $data = array();
+        $data = [];
         $domxpath = $this->createDOMXPath($this->document, $this->findNamespacePrefixes($xpath));
 
         foreach ($this->nodes as $node) {
@@ -637,9 +637,9 @@ public function extract($attributes)
         $attributes = (array) $attributes;
         $count = \count($attributes);
 
-        $data = array();
+        $data = [];
         foreach ($this->nodes as $node) {
-            $elements = array();
+            $elements = [];
             foreach ($attributes as $attribute) {
                 if ('_text' === $attribute) {
                     $elements[] = $node->nodeValue;
@@ -776,7 +776,7 @@ public function link($method = 'get')
      */
     public function links()
     {
-        $links = array();
+        $links = [];
         foreach ($this->nodes as $node) {
             if (!$node instanceof \DOMElement) {
                 throw new \InvalidArgumentException(sprintf('The current node list should contain only DOMElement instances, "%s" found.', \get_class($node)));
@@ -817,7 +817,7 @@ public function image()
      */
     public function images()
     {
-        $images = array();
+        $images = [];
         foreach ($this as $node) {
             if (!$node instanceof \DOMElement) {
                 throw new \InvalidArgumentException(sprintf('The current node list should contain only DOMElement instances, "%s" found.', \get_class($node)));
@@ -911,7 +911,7 @@ public static function xpathLiteral($s)
         }
 
         $string = $s;
-        $parts = array();
+        $parts = [];
         while (true) {
             if (false !== $pos = strpos($string, "'")) {
                 $parts[] = sprintf("'%s'", substr($string, 0, $pos));
@@ -957,7 +957,7 @@ private function filterRelativeXPath($xpath)
      */
     private function relativize(string $xpath): string
     {
-        $expressions = array();
+        $expressions = [];
 
         // An expression which will never match to replace expressions which cannot match in the crawler
         // We cannot simply drop
@@ -1075,7 +1075,7 @@ public function getIterator()
      */
     protected function sibling($node, $siblingDir = 'nextSibling')
     {
-        $nodes = array();
+        $nodes = [];
 
         $currentNode = $this->getNode(0);
         do {
@@ -1090,7 +1090,7 @@ protected function sibling($node, $siblingDir = 'nextSibling')
     /**
      * @throws \InvalidArgumentException
      */
-    private function createDOMXPath(\DOMDocument $document, array $prefixes = array()): \DOMXPath
+    private function createDOMXPath(\DOMDocument $document, array $prefixes = []): \DOMXPath
     {
         $domxpath = new \DOMXPath($document);
 
@@ -1129,7 +1129,7 @@ private function findNamespacePrefixes(string $xpath): array
             return array_unique($matches['prefix']);
         }
 
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php b/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
index 6fdafcfdd6aa..f3c80c7472af 100644
--- a/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
+++ b/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
@@ -39,8 +39,8 @@ public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $sto
         $this->dispatcher = $dispatcher;
         $this->stopwatch = $stopwatch;
         $this->logger = $logger;
-        $this->wrappedListeners = array();
-        $this->orphanedEvents = array();
+        $this->wrappedListeners = [];
+        $this->orphanedEvents = [];
     }
 
     /**
@@ -164,10 +164,10 @@ public function dispatch($eventName, Event $event = null)
     public function getCalledListeners()
     {
         if (null === $this->callStack) {
-            return array();
+            return [];
         }
 
-        $called = array();
+        $called = [];
         foreach ($this->callStack as $listener) {
             list($eventName) = $this->callStack->getInfo();
 
@@ -186,14 +186,14 @@ public function getNotCalledListeners()
             $allListeners = $this->getListeners();
         } catch (\Exception $e) {
             if (null !== $this->logger) {
-                $this->logger->info('An exception was thrown while getting the uncalled listeners.', array('exception' => $e));
+                $this->logger->info('An exception was thrown while getting the uncalled listeners.', ['exception' => $e]);
             }
 
             // unable to retrieve the uncalled listeners
-            return array();
+            return [];
         }
 
-        $notCalled = array();
+        $notCalled = [];
         foreach ($allListeners as $eventName => $listeners) {
             foreach ($listeners as $listener) {
                 $called = false;
@@ -216,7 +216,7 @@ public function getNotCalledListeners()
             }
         }
 
-        uasort($notCalled, array($this, 'sortNotCalledListeners'));
+        uasort($notCalled, [$this, 'sortNotCalledListeners']);
 
         return $notCalled;
     }
@@ -229,7 +229,7 @@ public function getOrphanedEvents(): array
     public function reset()
     {
         $this->callStack = null;
-        $this->orphanedEvents = array();
+        $this->orphanedEvents = [];
     }
 
     /**
@@ -242,7 +242,7 @@ public function reset()
      */
     public function __call($method, $arguments)
     {
-        return \call_user_func_array(array($this->dispatcher, $method), $arguments);
+        return \call_user_func_array([$this->dispatcher, $method], $arguments);
     }
 
     /**
@@ -279,7 +279,7 @@ private function preProcess($eventName)
             $this->wrappedListeners[$eventName][] = $wrappedListener;
             $this->dispatcher->removeListener($eventName, $listener);
             $this->dispatcher->addListener($eventName, $wrappedListener, $priority);
-            $this->callStack->attach($wrappedListener, array($eventName));
+            $this->callStack->attach($wrappedListener, [$eventName]);
         }
     }
 
@@ -297,7 +297,7 @@ private function postProcess($eventName)
             $this->dispatcher->addListener($eventName, $listener->getWrappedListener(), $priority);
 
             if (null !== $this->logger) {
-                $context = array('event' => $eventName, 'listener' => $listener->getPretty());
+                $context = ['event' => $eventName, 'listener' => $listener->getPretty()];
             }
 
             if ($listener->wasCalled()) {
diff --git a/src/Symfony/Component/EventDispatcher/Tests/Debug/TraceableEventDispatcherTest.php b/src/Symfony/Component/EventDispatcher/Tests/Debug/TraceableEventDispatcherTest.php
index 4d0c5b0937b0..9a3697a36f3b 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/Debug/TraceableEventDispatcherTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/Debug/TraceableEventDispatcherTest.php
@@ -178,7 +178,7 @@ public function testItReturnsOrphanedEventsAfterDispatch()
         $tdispatcher->dispatch('foo');
         $events = $tdispatcher->getOrphanedEvents();
         $this->assertCount(1, $events);
-        $this->assertEquals(array('foo'), $events);
+        $this->assertEquals(['foo'], $events);
     }
 
     public function testItDoesNotReturnHandledEvents()
diff --git a/src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php b/src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
index 3847a1553c76..56792fe33afb 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
@@ -30,16 +30,16 @@ public function testListenerDescription(callable $listener, $expected)
 
     public function provideListenersToDescribe()
     {
-        return array(
-            array(new FooListener(), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::__invoke'),
-            array(array(new FooListener(), 'listen'), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'),
-            array(array('Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic'), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic'),
-            array('var_dump', 'var_dump'),
-            array(function () {}, 'closure'),
-            array(\Closure::fromCallable(array(new FooListener(), 'listen')), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'),
-            array(\Closure::fromCallable(array('Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic')), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic'),
-            array(\Closure::fromCallable(function () {}), 'closure'),
-        );
+        return [
+            [new FooListener(), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::__invoke'],
+            [[new FooListener(), 'listen'], 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'],
+            [['Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic'], 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic'],
+            ['var_dump', 'var_dump'],
+            [function () {}, 'closure'],
+            [\Closure::fromCallable([new FooListener(), 'listen']), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'],
+            [\Closure::fromCallable(['Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic']), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic'],
+            [\Closure::fromCallable(function () {}), 'closure'],
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/EventDispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php b/src/Symfony/Component/EventDispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
index df0425b6f152..d665f426e023 100644
--- a/src/Symfony/Component/EventDispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
+++ b/src/Symfony/Component/EventDispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
@@ -145,41 +145,41 @@ public function testEventSubscriberUnresolvableClassName()
     public function testInvokableEventListener()
     {
         $container = new ContainerBuilder();
-        $container->register('foo', \stdClass::class)->addTag('kernel.event_listener', array('event' => 'foo.bar'));
-        $container->register('bar', InvokableListenerService::class)->addTag('kernel.event_listener', array('event' => 'foo.bar'));
-        $container->register('baz', InvokableListenerService::class)->addTag('kernel.event_listener', array('event' => 'event'));
+        $container->register('foo', \stdClass::class)->addTag('kernel.event_listener', ['event' => 'foo.bar']);
+        $container->register('bar', InvokableListenerService::class)->addTag('kernel.event_listener', ['event' => 'foo.bar']);
+        $container->register('baz', InvokableListenerService::class)->addTag('kernel.event_listener', ['event' => 'event']);
         $container->register('event_dispatcher', \stdClass::class);
 
         $registerListenersPass = new RegisterListenersPass();
         $registerListenersPass->process($container);
 
         $definition = $container->getDefinition('event_dispatcher');
-        $expectedCalls = array(
-            array(
+        $expectedCalls = [
+            [
                 'addListener',
-                array(
+                [
                     'foo.bar',
-                    array(new ServiceClosureArgument(new Reference('foo')), 'onFooBar'),
+                    [new ServiceClosureArgument(new Reference('foo')), 'onFooBar'],
                     0,
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'addListener',
-                array(
+                [
                     'foo.bar',
-                    array(new ServiceClosureArgument(new Reference('bar')), '__invoke'),
+                    [new ServiceClosureArgument(new Reference('bar')), '__invoke'],
                     0,
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'addListener',
-                array(
+                [
                     'event',
-                    array(new ServiceClosureArgument(new Reference('baz')), 'onEvent'),
+                    [new ServiceClosureArgument(new Reference('baz')), 'onEvent'],
                     0,
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $this->assertEquals($expectedCalls, $definition->getMethodCalls());
     }
 }
diff --git a/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php b/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
index 851fe0015768..51a01689a678 100644
--- a/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
+++ b/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
@@ -26,13 +26,13 @@ class ExpressionLanguage
     private $parser;
     private $compiler;
 
-    protected $functions = array();
+    protected $functions = [];
 
     /**
      * @param CacheItemPoolInterface                $cache
      * @param ExpressionFunctionProviderInterface[] $providers
      */
-    public function __construct(CacheItemPoolInterface $cache = null, array $providers = array())
+    public function __construct(CacheItemPoolInterface $cache = null, array $providers = [])
     {
         $this->cache = $cache ?: new ArrayAdapter();
         $this->registerFunctions();
@@ -49,7 +49,7 @@ public function __construct(CacheItemPoolInterface $cache = null, array $provide
      *
      * @return string The compiled PHP source code
      */
-    public function compile($expression, $names = array())
+    public function compile($expression, $names = [])
     {
         return $this->getCompiler()->compile($this->parse($expression, $names)->getNodes())->getSource();
     }
@@ -62,7 +62,7 @@ public function compile($expression, $names = array())
      *
      * @return mixed The result of the evaluation of the expression
      */
-    public function evaluate($expression, $values = array())
+    public function evaluate($expression, $values = [])
     {
         return $this->parse($expression, array_keys($values))->getNodes()->evaluate($this->functions, $values);
     }
@@ -82,7 +82,7 @@ public function parse($expression, $names)
         }
 
         asort($names);
-        $cacheKeyItems = array();
+        $cacheKeyItems = [];
 
         foreach ($names as $nameKey => $name) {
             $cacheKeyItems[] = \is_int($nameKey) ? $name : $nameKey.':'.$name;
@@ -118,7 +118,7 @@ public function register($name, callable $compiler, callable $evaluator)
             throw new \LogicException('Registering functions after calling evaluate(), compile() or parse() is not supported.');
         }
 
-        $this->functions[$name] = array('compiler' => $compiler, 'evaluator' => $evaluator);
+        $this->functions[$name] = ['compiler' => $compiler, 'evaluator' => $evaluator];
     }
 
     public function addFunction(ExpressionFunction $function)
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
index 15a26d5f3fcb..f9c9dae42b50 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
@@ -56,10 +56,10 @@ public function testCachedParse()
             ->with($cacheItemMock)
         ;
 
-        $parsedExpression = $expressionLanguage->parse('1 + 1', array());
+        $parsedExpression = $expressionLanguage->parse('1 + 1', []);
         $this->assertSame($savedParsedExpression, $parsedExpression);
 
-        $parsedExpression = $expressionLanguage->parse('1 + 1', array());
+        $parsedExpression = $expressionLanguage->parse('1 + 1', []);
         $this->assertSame($savedParsedExpression, $parsedExpression);
     }
 
@@ -74,7 +74,7 @@ public function testConstantFunction()
 
     public function testProviders()
     {
-        $expressionLanguage = new ExpressionLanguage(null, array(new TestProvider()));
+        $expressionLanguage = new ExpressionLanguage(null, [new TestProvider()]);
         $this->assertEquals('foo', $expressionLanguage->evaluate('identity("foo")'));
         $this->assertEquals('"foo"', $expressionLanguage->compile('identity("foo")'));
         $this->assertEquals('FOO', $expressionLanguage->evaluate('strtoupper("foo")'));
@@ -112,38 +112,38 @@ public function testShortCircuitOperatorsCompile($expression, array $names, $exp
     public function testParseThrowsInsteadOfNotice()
     {
         $expressionLanguage = new ExpressionLanguage();
-        $expressionLanguage->parse('node.', array('node'));
+        $expressionLanguage->parse('node.', ['node']);
     }
 
     public function shortCircuitProviderEvaluate()
     {
-        $object = $this->getMockBuilder('stdClass')->setMethods(array('foo'))->getMock();
+        $object = $this->getMockBuilder('stdClass')->setMethods(['foo'])->getMock();
         $object->expects($this->never())->method('foo');
 
-        return array(
-            array('false and object.foo()', array('object' => $object), false),
-            array('false && object.foo()', array('object' => $object), false),
-            array('true || object.foo()', array('object' => $object), true),
-            array('true or object.foo()', array('object' => $object), true),
-        );
+        return [
+            ['false and object.foo()', ['object' => $object], false],
+            ['false && object.foo()', ['object' => $object], false],
+            ['true || object.foo()', ['object' => $object], true],
+            ['true or object.foo()', ['object' => $object], true],
+        ];
     }
 
     public function shortCircuitProviderCompile()
     {
-        return array(
-            array('false and foo', array('foo' => 'foo'), false),
-            array('false && foo', array('foo' => 'foo'), false),
-            array('true || foo', array('foo' => 'foo'), true),
-            array('true or foo', array('foo' => 'foo'), true),
-        );
+        return [
+            ['false and foo', ['foo' => 'foo'], false],
+            ['false && foo', ['foo' => 'foo'], false],
+            ['true || foo', ['foo' => 'foo'], true],
+            ['true or foo', ['foo' => 'foo'], true],
+        ];
     }
 
     public function testCachingForOverriddenVariableNames()
     {
         $expressionLanguage = new ExpressionLanguage();
         $expression = 'a + b';
-        $expressionLanguage->evaluate($expression, array('a' => 1, 'b' => 1));
-        $result = $expressionLanguage->compile($expression, array('a', 'B' => 'b'));
+        $expressionLanguage->evaluate($expression, ['a' => 1, 'b' => 1]);
+        $result = $expressionLanguage->compile($expression, ['a', 'B' => 'b']);
         $this->assertSame('($a + $B)', $result);
     }
 
@@ -151,7 +151,7 @@ public function testStrictEquality()
     {
         $expressionLanguage = new ExpressionLanguage();
         $expression = '123 === a';
-        $result = $expressionLanguage->compile($expression, array('a'));
+        $result = $expressionLanguage->compile($expression, ['a']);
         $this->assertSame('(123 === $a)', $result);
     }
 
@@ -160,7 +160,7 @@ public function testCachingWithDifferentNamesOrder()
         $cacheMock = $this->getMockBuilder('Psr\Cache\CacheItemPoolInterface')->getMock();
         $cacheItemMock = $this->getMockBuilder('Psr\Cache\CacheItemInterface')->getMock();
         $expressionLanguage = new ExpressionLanguage($cacheMock);
-        $savedParsedExpressions = array();
+        $savedParsedExpressions = [];
 
         $cacheMock
             ->expects($this->exactly(2))
@@ -193,8 +193,8 @@ public function testCachingWithDifferentNamesOrder()
         ;
 
         $expression = 'a + b';
-        $expressionLanguage->compile($expression, array('a', 'B' => 'b'));
-        $expressionLanguage->compile($expression, array('B' => 'b', 'a'));
+        $expressionLanguage->compile($expression, ['a', 'B' => 'b']);
+        $expressionLanguage->compile($expression, ['B' => 'b', 'a']);
     }
 
     /**
@@ -204,7 +204,7 @@ public function testCachingWithDifferentNamesOrder()
     public function testRegisterAfterParse($registerCallback)
     {
         $el = new ExpressionLanguage();
-        $el->parse('1 + 1', array());
+        $el->parse('1 + 1', []);
         $registerCallback($el);
     }
 
@@ -226,7 +226,7 @@ public function testRegisterAfterEval($registerCallback)
     public function testCallBadCallable()
     {
         $el = new ExpressionLanguage();
-        $el->evaluate('foo.myfunction()', array('foo' => new \stdClass()));
+        $el->evaluate('foo.myfunction()', ['foo' => new \stdClass()]);
     }
 
     /**
@@ -242,22 +242,22 @@ public function testRegisterAfterCompile($registerCallback)
 
     public function getRegisterCallbacks()
     {
-        return array(
-            array(
+        return [
+            [
                 function (ExpressionLanguage $el) {
                     $el->register('fn', function () {}, function () {});
                 },
-            ),
-            array(
+            ],
+            [
                 function (ExpressionLanguage $el) {
                     $el->addFunction(new ExpressionFunction('fn', function () {}, function () {}));
                 },
-            ),
-            array(
+            ],
+            [
                 function (ExpressionLanguage $el) {
                     $el->registerProvider(new TestProvider());
                 },
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index ffd73bf51054..a6c7ff846386 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -59,7 +59,7 @@ public function copy($originFile, $targetFile, $overwriteNewerFiles = false)
             }
 
             // Stream context created to allow files overwrite when using FTP stream wrapper - disabled by default
-            if (false === $target = @fopen($targetFile, 'w', null, stream_context_create(array('ftp' => array('overwrite' => true))))) {
+            if (false === $target = @fopen($targetFile, 'w', null, stream_context_create(['ftp' => ['overwrite' => true]]))) {
                 throw new IOException(sprintf('Failed to copy "%s" to "%s" because target file could not be opened for writing.', $originFile, $targetFile), 0, null, $originFile);
             }
 
@@ -165,7 +165,7 @@ public function remove($files)
         if ($files instanceof \Traversable) {
             $files = iterator_to_array($files, false);
         } elseif (!\is_array($files)) {
-            $files = array($files);
+            $files = [$files];
         }
         $files = array_reverse($files);
         foreach ($files as $file) {
@@ -282,7 +282,7 @@ public function rename($origin, $target, $overwrite = false)
         if (true !== @rename($origin, $target)) {
             if (is_dir($origin)) {
                 // See https://bugs.php.net/bug.php?id=54097 & http://php.net/manual/en/function.rename.php#113943
-                $this->mirror($origin, $target, null, array('override' => $overwrite, 'delete' => $overwrite));
+                $this->mirror($origin, $target, null, ['override' => $overwrite, 'delete' => $overwrite]);
                 $this->remove($origin);
 
                 return;
@@ -476,7 +476,7 @@ public function makePathRelative($endPath, $startPath)
         $endPathArr = explode('/', trim($endPath, '/'));
 
         $normalizePathArray = function ($pathSegments) {
-            $result = array();
+            $result = [];
 
             foreach ($pathSegments as $segment) {
                 if ('..' === $segment) {
@@ -535,7 +535,7 @@ public function makePathRelative($endPath, $startPath)
      *
      * @throws IOException When file type is unknown
      */
-    public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = array())
+    public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = [])
     {
         $targetDir = rtrim($targetDir, '/\\');
         $originDir = rtrim($originDir, '/\\');
@@ -723,7 +723,7 @@ public function appendToFile($filename, $content)
 
     private function toIterable($files): iterable
     {
-        return \is_array($files) || $files instanceof \Traversable ? $files : array($files);
+        return \is_array($files) || $files instanceof \Traversable ? $files : [$files];
     }
 
     /**
@@ -733,7 +733,7 @@ private function getSchemeAndHierarchy(string $filename): array
     {
         $components = explode('://', $filename, 2);
 
-        return 2 === \count($components) ? array($components[0], $components[1]) : array(null, $components[0]);
+        return 2 === \count($components) ? [$components[0], $components[1]] : [null, $components[0]];
     }
 
     private static function box($func)
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index d9da65183731..91517559c9d1 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -197,9 +197,9 @@ public function testMkdirCreatesDirectoriesRecursively()
     public function testMkdirCreatesDirectoriesFromArray()
     {
         $basePath = $this->workspace.\DIRECTORY_SEPARATOR;
-        $directories = array(
+        $directories = [
             $basePath.'1', $basePath.'2', $basePath.'3',
-        );
+        ];
 
         $this->filesystem->mkdir($directories);
 
@@ -211,9 +211,9 @@ public function testMkdirCreatesDirectoriesFromArray()
     public function testMkdirCreatesDirectoriesFromTraversableObject()
     {
         $basePath = $this->workspace.\DIRECTORY_SEPARATOR;
-        $directories = new \ArrayObject(array(
+        $directories = new \ArrayObject([
             $basePath.'1', $basePath.'2', $basePath.'3',
-        ));
+        ]);
 
         $this->filesystem->mkdir($directories);
 
@@ -257,9 +257,9 @@ public function testTouchFails()
     public function testTouchCreatesEmptyFilesFromArray()
     {
         $basePath = $this->workspace.\DIRECTORY_SEPARATOR;
-        $files = array(
+        $files = [
             $basePath.'1', $basePath.'2', $basePath.'3',
-        );
+        ];
 
         $this->filesystem->touch($files);
 
@@ -271,9 +271,9 @@ public function testTouchCreatesEmptyFilesFromArray()
     public function testTouchCreatesEmptyFilesFromTraversableObject()
     {
         $basePath = $this->workspace.\DIRECTORY_SEPARATOR;
-        $files = new \ArrayObject(array(
+        $files = new \ArrayObject([
             $basePath.'1', $basePath.'2', $basePath.'3',
-        ));
+        ]);
 
         $this->filesystem->touch($files);
 
@@ -302,9 +302,9 @@ public function testRemoveCleansArrayOfFilesAndDirectories()
         mkdir($basePath.'dir');
         touch($basePath.'file');
 
-        $files = array(
+        $files = [
             $basePath.'dir', $basePath.'file',
-        );
+        ];
 
         $this->filesystem->remove($files);
 
@@ -319,9 +319,9 @@ public function testRemoveCleansTraversableObjectOfFilesAndDirectories()
         mkdir($basePath.'dir');
         touch($basePath.'file');
 
-        $files = new \ArrayObject(array(
+        $files = new \ArrayObject([
             $basePath.'dir', $basePath.'file',
-        ));
+        ]);
 
         $this->filesystem->remove($files);
 
@@ -335,9 +335,9 @@ public function testRemoveIgnoresNonExistingFiles()
 
         mkdir($basePath.'dir');
 
-        $files = array(
+        $files = [
             $basePath.'dir', $basePath.'file',
-        );
+        ];
 
         $this->filesystem->remove($files);
 
@@ -409,9 +409,9 @@ public function testFilesExistsTraversableObjectOfFilesAndDirectories()
         mkdir($basePath.'dir');
         touch($basePath.'file');
 
-        $files = new \ArrayObject(array(
+        $files = new \ArrayObject([
             $basePath.'dir', $basePath.'file',
-        ));
+        ]);
 
         $this->assertTrue($this->filesystem->exists($files));
     }
@@ -424,9 +424,9 @@ public function testFilesNotExistsTraversableObjectOfFilesAndDirectories()
         touch($basePath.'file');
         touch($basePath.'file2');
 
-        $files = new \ArrayObject(array(
+        $files = new \ArrayObject([
             $basePath.'dir', $basePath.'file', $basePath.'file2',
-        ));
+        ]);
 
         unlink($basePath.'file');
 
@@ -503,7 +503,7 @@ public function testChmodChangesModeOfArrayOfFiles()
 
         $directory = $this->workspace.\DIRECTORY_SEPARATOR.'directory';
         $file = $this->workspace.\DIRECTORY_SEPARATOR.'file';
-        $files = array($directory, $file);
+        $files = [$directory, $file];
 
         mkdir($directory);
         touch($file);
@@ -520,7 +520,7 @@ public function testChmodChangesModeOfTraversableFileObject()
 
         $directory = $this->workspace.\DIRECTORY_SEPARATOR.'directory';
         $file = $this->workspace.\DIRECTORY_SEPARATOR.'file';
-        $files = new \ArrayObject(array($directory, $file));
+        $files = new \ArrayObject([$directory, $file]);
 
         mkdir($directory);
         touch($file);
@@ -975,7 +975,7 @@ public function testLinkWithSeveralTargets()
 
         touch($file);
 
-        $this->filesystem->hardlink($file, array($link1, $link2));
+        $this->filesystem->hardlink($file, [$link1, $link2]);
 
         $this->assertTrue(is_file($link1));
         $this->assertEquals(fileinode($file), fileinode($link1));
@@ -993,7 +993,7 @@ public function testLinkWithSameTarget()
         touch($file);
 
         // practically same as testLinkIsNotOverwrittenIfAlreadyCreated
-        $this->filesystem->hardlink($file, array($link, $link));
+        $this->filesystem->hardlink($file, [$link, $link]);
 
         $this->assertTrue(is_file($link));
         $this->assertEquals(fileinode($file), fileinode($link));
@@ -1102,47 +1102,47 @@ public function testMakePathRelative($endPath, $startPath, $expectedPath)
 
     public function providePathsForMakePathRelative()
     {
-        $paths = array(
-            array('/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component', '../'),
-            array('/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component/', '../'),
-            array('/var/lib/symfony/src/Symfony', '/var/lib/symfony/src/Symfony/Component', '../'),
-            array('/var/lib/symfony/src/Symfony', '/var/lib/symfony/src/Symfony/Component/', '../'),
-            array('/usr/lib/symfony/', '/var/lib/symfony/src/Symfony/Component', '../../../../../../usr/lib/symfony/'),
-            array('/var/lib/symfony/src/Symfony/', '/var/lib/symfony/', 'src/Symfony/'),
-            array('/aa/bb', '/aa/bb', './'),
-            array('/aa/bb', '/aa/bb/', './'),
-            array('/aa/bb/', '/aa/bb', './'),
-            array('/aa/bb/', '/aa/bb/', './'),
-            array('/aa/bb/cc', '/aa/bb/cc/dd', '../'),
-            array('/aa/bb/cc', '/aa/bb/cc/dd/', '../'),
-            array('/aa/bb/cc/', '/aa/bb/cc/dd', '../'),
-            array('/aa/bb/cc/', '/aa/bb/cc/dd/', '../'),
-            array('/aa/bb/cc', '/aa', 'bb/cc/'),
-            array('/aa/bb/cc', '/aa/', 'bb/cc/'),
-            array('/aa/bb/cc/', '/aa', 'bb/cc/'),
-            array('/aa/bb/cc/', '/aa/', 'bb/cc/'),
-            array('/a/aab/bb', '/a/aa', '../aab/bb/'),
-            array('/a/aab/bb', '/a/aa/', '../aab/bb/'),
-            array('/a/aab/bb/', '/a/aa', '../aab/bb/'),
-            array('/a/aab/bb/', '/a/aa/', '../aab/bb/'),
-            array('/a/aab/bb/', '/', 'a/aab/bb/'),
-            array('/a/aab/bb/', '/b/aab', '../../a/aab/bb/'),
-            array('/aab/bb', '/aa', '../aab/bb/'),
-            array('/aab', '/aa', '../aab/'),
-            array('/aa/bb/cc', '/aa/dd/..', 'bb/cc/'),
-            array('/aa/../bb/cc', '/aa/dd/..', '../bb/cc/'),
-            array('/aa/bb/../../cc', '/aa/../dd/..', 'cc/'),
-            array('/../aa/bb/cc', '/aa/dd/..', 'bb/cc/'),
-            array('/../../aa/../bb/cc', '/aa/dd/..', '../bb/cc/'),
-            array('C:/aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'),
-            array('c:/aa/../bb/cc', 'c:/aa/dd/..', '../bb/cc/'),
-            array('C:/aa/bb/../../cc', 'C:/aa/../dd/..', 'cc/'),
-            array('C:/../aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'),
-            array('C:/../../aa/../bb/cc', 'C:/aa/dd/..', '../bb/cc/'),
-        );
+        $paths = [
+            ['/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component', '../'],
+            ['/var/lib/symfony/src/Symfony/', '/var/lib/symfony/src/Symfony/Component/', '../'],
+            ['/var/lib/symfony/src/Symfony', '/var/lib/symfony/src/Symfony/Component', '../'],
+            ['/var/lib/symfony/src/Symfony', '/var/lib/symfony/src/Symfony/Component/', '../'],
+            ['/usr/lib/symfony/', '/var/lib/symfony/src/Symfony/Component', '../../../../../../usr/lib/symfony/'],
+            ['/var/lib/symfony/src/Symfony/', '/var/lib/symfony/', 'src/Symfony/'],
+            ['/aa/bb', '/aa/bb', './'],
+            ['/aa/bb', '/aa/bb/', './'],
+            ['/aa/bb/', '/aa/bb', './'],
+            ['/aa/bb/', '/aa/bb/', './'],
+            ['/aa/bb/cc', '/aa/bb/cc/dd', '../'],
+            ['/aa/bb/cc', '/aa/bb/cc/dd/', '../'],
+            ['/aa/bb/cc/', '/aa/bb/cc/dd', '../'],
+            ['/aa/bb/cc/', '/aa/bb/cc/dd/', '../'],
+            ['/aa/bb/cc', '/aa', 'bb/cc/'],
+            ['/aa/bb/cc', '/aa/', 'bb/cc/'],
+            ['/aa/bb/cc/', '/aa', 'bb/cc/'],
+            ['/aa/bb/cc/', '/aa/', 'bb/cc/'],
+            ['/a/aab/bb', '/a/aa', '../aab/bb/'],
+            ['/a/aab/bb', '/a/aa/', '../aab/bb/'],
+            ['/a/aab/bb/', '/a/aa', '../aab/bb/'],
+            ['/a/aab/bb/', '/a/aa/', '../aab/bb/'],
+            ['/a/aab/bb/', '/', 'a/aab/bb/'],
+            ['/a/aab/bb/', '/b/aab', '../../a/aab/bb/'],
+            ['/aab/bb', '/aa', '../aab/bb/'],
+            ['/aab', '/aa', '../aab/'],
+            ['/aa/bb/cc', '/aa/dd/..', 'bb/cc/'],
+            ['/aa/../bb/cc', '/aa/dd/..', '../bb/cc/'],
+            ['/aa/bb/../../cc', '/aa/../dd/..', 'cc/'],
+            ['/../aa/bb/cc', '/aa/dd/..', 'bb/cc/'],
+            ['/../../aa/../bb/cc', '/aa/dd/..', '../bb/cc/'],
+            ['C:/aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'],
+            ['c:/aa/../bb/cc', 'c:/aa/dd/..', '../bb/cc/'],
+            ['C:/aa/bb/../../cc', 'C:/aa/../dd/..', 'cc/'],
+            ['C:/../aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'],
+            ['C:/../../aa/../bb/cc', 'C:/aa/dd/..', '../bb/cc/'],
+        ];
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
-            $paths[] = array('c:\var\lib/symfony/src/Symfony/', 'c:/var/lib/symfony/', 'src/Symfony/');
+            $paths[] = ['c:\var\lib/symfony/src/Symfony/', 'c:/var/lib/symfony/', 'src/Symfony/'];
         }
 
         return $paths;
@@ -1189,19 +1189,19 @@ public function testMirrorCopiesFilesAndDirectoriesRecursively()
 
         $this->filesystem->remove($file1);
 
-        $this->filesystem->mirror($sourcePath, $targetPath, null, array('delete' => false));
+        $this->filesystem->mirror($sourcePath, $targetPath, null, ['delete' => false]);
         $this->assertTrue($this->filesystem->exists($targetPath.'directory'.\DIRECTORY_SEPARATOR.'file1'));
 
-        $this->filesystem->mirror($sourcePath, $targetPath, null, array('delete' => true));
+        $this->filesystem->mirror($sourcePath, $targetPath, null, ['delete' => true]);
         $this->assertFalse($this->filesystem->exists($targetPath.'directory'.\DIRECTORY_SEPARATOR.'file1'));
 
         file_put_contents($file1, 'FILE1');
 
-        $this->filesystem->mirror($sourcePath, $targetPath, null, array('delete' => true));
+        $this->filesystem->mirror($sourcePath, $targetPath, null, ['delete' => true]);
         $this->assertTrue($this->filesystem->exists($targetPath.'directory'.\DIRECTORY_SEPARATOR.'file1'));
 
         $this->filesystem->remove($directory);
-        $this->filesystem->mirror($sourcePath, $targetPath, null, array('delete' => true));
+        $this->filesystem->mirror($sourcePath, $targetPath, null, ['delete' => true]);
         $this->assertFalse($this->filesystem->exists($targetPath.'directory'));
         $this->assertFalse($this->filesystem->exists($targetPath.'directory'.\DIRECTORY_SEPARATOR.'file1'));
     }
@@ -1323,7 +1323,7 @@ public function testMirrorContentsWithSameNameAsSourceOrTargetWithDeleteOption()
         $oldPath = getcwd();
         chdir($this->workspace);
 
-        $this->filesystem->mirror('source', 'target', null, array('delete' => true));
+        $this->filesystem->mirror('source', 'target', null, ['delete' => true]);
 
         chdir($oldPath);
 
@@ -1344,15 +1344,15 @@ public function testIsAbsolutePath($path, $expectedResult)
 
     public function providePathsForIsAbsolutePath()
     {
-        return array(
-            array('/var/lib', true),
-            array('c:\\\\var\\lib', true),
-            array('\\var\\lib', true),
-            array('var/lib', false),
-            array('../var/lib', false),
-            array('', false),
-            array(null, false),
-        );
+        return [
+            ['/var/lib', true],
+            ['c:\\\\var\\lib', true],
+            ['\\var\\lib', true],
+            ['var/lib', false],
+            ['../var/lib', false],
+            ['', false],
+            [null, false],
+        ];
     }
 
     public function testTempnam()
@@ -1482,7 +1482,7 @@ public function testDumpFileWithArray()
     {
         $filename = $this->workspace.\DIRECTORY_SEPARATOR.'foo'.\DIRECTORY_SEPARATOR.'baz.txt';
 
-        $this->filesystem->dumpFile($filename, array('bar'));
+        $this->filesystem->dumpFile($filename, ['bar']);
 
         $this->assertFileExists($filename);
         $this->assertStringEqualsFile($filename, 'bar');
diff --git a/src/Symfony/Component/Form/AbstractRendererEngine.php b/src/Symfony/Component/Form/AbstractRendererEngine.php
index 7a419dcaeac2..5eebb20ac1eb 100644
--- a/src/Symfony/Component/Form/AbstractRendererEngine.php
+++ b/src/Symfony/Component/Form/AbstractRendererEngine.php
@@ -24,11 +24,11 @@ abstract class AbstractRendererEngine implements FormRendererEngineInterface
     const CACHE_KEY_VAR = 'cache_key';
 
     protected $defaultThemes;
-    protected $themes = array();
-    protected $useDefaultThemes = array();
-    protected $resources = array();
+    protected $themes = [];
+    protected $useDefaultThemes = [];
+    protected $resources = [];
 
-    private $resourceHierarchyLevels = array();
+    private $resourceHierarchyLevels = [];
 
     /**
      * Creates a new renderer engine.
@@ -36,7 +36,7 @@ abstract class AbstractRendererEngine implements FormRendererEngineInterface
      * @param array $defaultThemes The default themes. The type of these
      *                             themes is open to the implementation.
      */
-    public function __construct(array $defaultThemes = array())
+    public function __construct(array $defaultThemes = [])
     {
         $this->defaultThemes = $defaultThemes;
     }
@@ -49,7 +49,7 @@ public function setTheme(FormView $view, $themes, $useDefaultThemes = true)
         $cacheKey = $view->vars[self::CACHE_KEY_VAR];
 
         // Do not cast, as casting turns objects into arrays of properties
-        $this->themes[$cacheKey] = \is_array($themes) ? $themes : array($themes);
+        $this->themes[$cacheKey] = \is_array($themes) ? $themes : [$themes];
         $this->useDefaultThemes[$cacheKey] = (bool) $useDefaultThemes;
 
         // Unset instead of resetting to an empty array, in order to allow
diff --git a/src/Symfony/Component/Form/ButtonBuilder.php b/src/Symfony/Component/Form/ButtonBuilder.php
index dee7d33d8af9..5a67b7d23f87 100644
--- a/src/Symfony/Component/Form/ButtonBuilder.php
+++ b/src/Symfony
10000
/Component/Form/ButtonBuilder.php
@@ -45,7 +45,7 @@ class ButtonBuilder implements \IteratorAggregate, FormBuilderInterface
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @var array
@@ -55,7 +55,7 @@ class ButtonBuilder implements \IteratorAggregate, FormBuilderInterface
     /**
      * @throws InvalidArgumentException if the name is empty
      */
-    public function __construct(?string $name, array $options = array())
+    public function __construct(?string $name, array $options = [])
     {
         if ('' === $name || null === $name) {
             throw new InvalidArgumentException('Buttons cannot have empty names.');
@@ -76,7 +76,7 @@ public function __construct(?string $name, array $options = array())
      *
      * @throws BadMethodCallException
      */
-    public function add($child, $type = null, array $options = array())
+    public function add($child, $type = null, array $options = [])
     {
         throw new BadMethodCallException('Buttons cannot have children.');
     }
@@ -92,7 +92,7 @@ public function add($child, $type = null, array $options = array())
      *
      * @throws BadMethodCallException
      */
-    public function create($name, $type = null, array $options = array())
+    public function create($name, $type = null, array $options = [])
     {
         throw new BadMethodCallException('Buttons cannot have children.');
     }
@@ -144,7 +144,7 @@ public function has($name)
      */
     public function all()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -582,7 +582,7 @@ public function getType()
      */
     public function getViewTransformers()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -592,7 +592,7 @@ public function getViewTransformers()
      */
     public function getModelTransformers()
     {
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php b/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php
index d5d251a319c4..5383f2a78393 100644
--- a/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php
+++ b/src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php
@@ -47,8 +47,8 @@ public function createListFromLoader(ChoiceLoaderInterface $loader, $value = nul
      */
     public function createView(ChoiceListInterface $list, $preferredChoices = null, $label = null, $index = null, $groupBy = null, $attr = null)
     {
-        $preferredViews = array();
-        $otherViews = array();
+        $preferredViews = [];
+        $otherViews = [];
         $choices = $list->getChoices();
         $keys = $list->getOriginalKeys();
 
@@ -137,7 +137,7 @@ private static function addChoiceView($choice, $value, $label, $keys, &$index, $
             $label,
             // The attributes may be a callable or a mapping from choice indices
             // to nested arrays
-            \is_callable($attr) ? $attr($choice, $key, $value) : (isset($attr[$key]) ? $attr[$key] : array())
+            \is_callable($attr) ? $attr($choice, $key, $value) : (isset($attr[$key]) ? $attr[$key] : [])
         );
 
         // $isPreferred may be null if no choices are preferred
@@ -157,8 +157,8 @@ private static function addChoiceViewsGroupedBy($groupBy, $label, $choices, $key
 
             // Add the contents of groups to new ChoiceGroupView instances
             if (\is_array($value)) {
-                $preferredViewsForGroup = array();
-                $otherViewsForGroup = array();
+                $preferredViewsForGroup = [];
+                $otherViewsForGroup = [];
 
                 self::addChoiceViewsGroupedBy(
                     $value,
diff --git a/src/Symfony/Component/Form/ChoiceList/Loader/IntlCallbackChoiceLoader.php b/src/Symfony/Component/Form/ChoiceList/Loader/IntlCallbackChoiceLoader.php
index 687c0197ae5e..1a119bb96cdc 100644
--- a/src/Symfony/Component/Form/ChoiceList/Loader/IntlCallbackChoiceLoader.php
+++ b/src/Symfony/Component/Form/ChoiceList/Loader/IntlCallbackChoiceLoader.php
@@ -27,7 +27,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -41,7 +41,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/ChoiceList/View/ChoiceView.php b/src/Symfony/Component/Form/ChoiceList/View/ChoiceView.php
index eb27f0891dd3..3bc9cdd6c91d 100644
--- a/src/Symfony/Component/Form/ChoiceList/View/ChoiceView.php
+++ b/src/Symfony/Component/Form/ChoiceList/View/ChoiceView.php
@@ -35,7 +35,7 @@ class ChoiceView
      * @param string $label The label displayed to humans
      * @param array  $attr  Additional attributes for the HTML tag
      */
-    public function __construct($data, string $value, $label, array $attr = array())
+    public function __construct($data, string $value, $label, array $attr = [])
     {
         $this->data = $data;
         $this->value = $value;
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/BooleanToStringTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/BooleanToStringTransformer.php
index 267aa355542a..dca727faee63 100644
--- a/src/Symfony/Component/Form/Extension/Core/DataTransformer/BooleanToStringTransformer.php
+++ b/src/Symfony/Component/Form/Extension/Core/DataTransformer/BooleanToStringTransformer.php
@@ -31,7 +31,7 @@ class BooleanToStringTransformer implements DataTransformerInterface
      * @param string $trueValue   The value emitted upon transform if the input is true
      * @param array  $falseValues
      */
-    public function __construct(string $trueValue, array $falseValues = array(null))
+    public function __construct(string $trueValue, array $falseValues = [null])
     {
         $this->trueValue = $trueValue;
         $this->falseValues = $falseValues;
diff --git a/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php b/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
index 8e6867dbcf06..695336e9548a 100644
--- a/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
+++ b/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
@@ -38,7 +38,7 @@ class ResizeFormListener implements EventSubscriberInterface
      * @param bool          $allowDelete Whether children could be removed from the group
      * @param bool|callable $deleteEmpty
      */
-    public function __construct(string $type, array $options = array(), bool $allowAdd = false, bool $allowDelete = false, $deleteEmpty = false)
+    public function __construct(string $type, array $options = [], bool $allowAdd = false, bool $allowDelete = false, $deleteEmpty = false)
     {
         $this->type = $type;
         $this->allowAdd = $allowAdd;
@@ -49,12 +49,12 @@ public function __construct(string $type, array $options = array(), bool $allowA
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             FormEvents::PRE_SET_DATA => 'preSetData',
             FormEvents::PRE_SUBMIT => 'preSubmit',
             // (MergeCollectionListener, MergeDoctrineCollectionListener)
-            FormEvents::SUBMIT => array('onSubmit', 50),
-        );
+            FormEvents::SUBMIT => ['onSubmit', 50],
+        ];
     }
 
     public function preSetData(FormEvent $event)
@@ -63,7 +63,7 @@ public function preSetData(FormEvent $event)
         $data = $event->getData();
 
         if (null === $data) {
-            $data = array();
+            $data = [];
         }
 
         if (!\is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
@@ -77,9 +77,9 @@ public function preSetData(FormEvent $event)
 
         // Then add all rows again in the correct order
         foreach ($data as $name => $value) {
-            $form->add($name, $this->type, array_replace(array(
+            $form->add($name, $this->type, array_replace([
                 'property_path' => '['.$name.']',
-            ), $this->options));
+            ], $this->options));
         }
     }
 
@@ -89,7 +89,7 @@ public function preSubmit(FormEvent $event)
         $data = $event->getData();
 
         if (!\is_array($data)) {
-            $data = array();
+            $data = [];
         }
 
         // Remove all empty rows
@@ -105,9 +105,9 @@ public function preSubmit(FormEvent $event)
         if ($this->allowAdd) {
             foreach ($data as $name => $value) {
                 if (!$form->has($name)) {
-                    $form->add($name, $this->type, array_replace(array(
+                    $form->add($name, $this->type, array_replace([
                         'property_path' => '['.$name.']',
-                    ), $this->options));
+                    ], $this->options));
                 }
             }
         }
@@ -123,7 +123,7 @@ public function onSubmit(FormEvent $event)
         // entries, so we need to manually unset removed entries in the collection.
 
         if (null === $data) {
-            $data = array();
+            $data = [];
         }
 
         if (!\is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
@@ -149,7 +149,7 @@ public function onSubmit(FormEvent $event)
         // The data mapper only adds, but does not remove items, so do this
         // here
         if ($this->allowDelete) {
-            $toDelete = array();
+            $toDelete = [];
 
             foreach ($data as $name => $child) {
                 if (!$form->has($name)) {
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php b/src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php
index 4f4d58198e1f..2b29c5ad9bf1 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CheckboxType.php
@@ -40,10 +40,10 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function buildView(FormView $view, FormInterface $form, array $options)
     {
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'value' => $options['value'],
             'checked' => null !== $form->getViewData(),
-        ));
+        ]);
     }
 
     /**
@@ -55,12 +55,12 @@ public function configureOptions(OptionsResolver $resolver)
             return $viewData;
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'value' => '1',
             'empty_data' => $emptyData,
             'compound' => false,
-            'false_values' => array(null),
-        ));
+            'false_values' => [null],
+        ]);
 
         $resolver->setAllowedTypes('false_values', 'array');
     }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
index fcaf42e765ba..8d2d109699fb 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
@@ -70,7 +70,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
 
             // Check if the choices already contain the empty value
             // Only add the placeholder option if this is not the case
-            if (null !== $options['placeholder'] && 0 === \count($choiceList->getChoicesForValues(array('')))) {
+            if (null !== $options['placeholder'] && 0 === \count($choiceList->getChoicesForValues(['']))) {
                 $placeholderView = new ChoiceView(null, '', $options['placeholder']);
 
                 // "placeholder" is a reserved name
@@ -108,7 +108,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 $unknownValues = $valueMap;
 
                 // Reconstruct the data as mapping from child names to values
-                $data = array();
+                $data = [];
 
                 /** @var FormInterface $child */
                 foreach ($form as $child) {
@@ -184,7 +184,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             ? $form->getConfig()->getAttribute('choice_list_view')
             : $this->createChoiceListView($choiceList, $options);
 
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'multiple' => $options['multiple'],
             'expanded' => $options['expanded'],
             'preferred_choices' => $choiceListView->preferredChoices,
@@ -192,7 +192,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             'separator' => '-------------------',
             'placeholder' => null,
             'choice_translation_domain' => $choiceTranslationDomain,
-        ));
+        ]);
 
         // The decision, whether a choice is selected, is potentially done
         // thousand of times during the rendering of a template. Provide a
@@ -255,7 +255,7 @@ public function configureOptions(OptionsResolver $resolver)
             }
 
             if ($options['multiple']) {
-                return array();
+                return [];
             }
 
             return '';
@@ -296,16 +296,16 @@ public function configureOptions(OptionsResolver $resolver)
             return $choiceTranslationDomain;
         };
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'multiple' => false,
             'expanded' => false,
-            'choices' => array(),
+            'choices' => [],
             'choice_loader' => null,
             'choice_label' => null,
             'choice_name' => null,
             'choice_value' => null,
             'choice_attr' => null,
-            'preferred_choices' => array(),
+            'preferred_choices' => [],
             'group_by' => null,
             'empty_data' => $emptyData,
             'placeholder' => $placeholderDefault,
@@ -317,20 +317,20 @@ public function configureOptions(OptionsResolver $resolver)
             'data_class' => null,
             'choice_translation_domain' => true,
             'trim' => false,
-        ));
+        ]);
 
         $resolver->setNormalizer('placeholder', $placeholderNormalizer);
         $resolver->setNormalizer('choice_translation_domain', $choiceTranslationDomainNormalizer);
 
-        $resolver->setAllowedTypes('choices', array('null', 'array', '\Traversable'));
-        $resolver->setAllowedTypes('choice_translation_domain', array('null', 'bool', 'string'));
-        $resolver->setAllowedTypes('choice_loader', array('null', 'Symfony\Component\Form\ChoiceList\Loader\ChoiceLoaderInterface'));
-        $resolver->setAllowedTypes('choice_label', array('null', 'bool', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('choice_name', array('null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('choice_value', array('null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('choice_attr', array('null', 'array', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('preferred_choices', array('array', '\Traversable', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
-        $resolver->setAllowedTypes('group_by', array('null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath'));
+        $resolver->setAllowedTypes('choices', ['null', 'array', '\Traversable']);
+        $resolver->setAllowedTypes('choice_translation_domain', ['null', 'bool', 'string']);
+        $resolver->setAllowedTypes('choice_loader', ['null', 'Symfony\Component\Form\ChoiceList\Loader\ChoiceLoaderInterface']);
+        $resolver->setAllowedTypes('choice_label', ['null', 'bool', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('choice_name', ['null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('choice_value', ['null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('choice_attr', ['null', 'array', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('preferred_choices', ['array', '\Traversable', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
+        $resolver->setAllowedTypes('group_by', ['null', 'callable', 'string', 'Symfony\Component\PropertyAccess\PropertyPath']);
     }
 
     /**
@@ -367,13 +367,13 @@ private function addSubForms(FormBuilderInterface $builder, array $choiceViews,
      */
     private function addSubForm(FormBuilderInterface $builder, string $name, ChoiceView $choiceView, array $options)
     {
-        $choiceOpts = array(
+        $choiceOpts = [
             'value' => $choiceView->value,
             'label' => $choiceView->label,
             'attr' => $choiceView->attr,
             'translation_domain' => $options['translation_domain'],
             'block_name' => 'entry',
-        );
+        ];
 
         if ($options['multiple']) {
             $choiceType = __NAMESPACE__.'\CheckboxType';
@@ -397,7 +397,7 @@ private function createChoiceList(array $options)
         }
 
         // Harden against NULL values (like in EntityType and ModelType)
-        $choices = null !== $options['choices'] ? $options['choices'] : array();
+        $choices = null !== $options['choices'] ? $options['choices'] : [];
 
         return $this->choiceListFactory->createListFromChoices($choices, $options['choice_value']);
     }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php b/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
index 195347bc9d25..2373dee5ff90 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
@@ -39,7 +39,7 @@ class CountryType extends AbstractType implements ChoiceLoaderInterface
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 $choiceTranslationLocale = $options['choice_translation_locale'];
 
@@ -49,9 +49,9 @@ public function configureOptions(OptionsResolver $resolver)
             },
             'choice_translation_domain' => false,
             'choice_translation_locale' => null,
-        ));
+        ]);
 
-        $resolver->setAllowedTypes('choice_translation_locale', array('null', 'string'));
+        $resolver->setAllowedTypes('choice_translation_locale', ['null', 'string']);
     }
 
     /**
@@ -98,7 +98,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -116,7 +116,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php b/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
index 4cf76eed5862..134d568e4d17 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
@@ -39,7 +39,7 @@ class CurrencyType extends AbstractType implements ChoiceLoaderInterface
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 $choiceTranslationLocale = $options['choice_translation_locale'];
 
@@ -49,9 +49,9 @@ public function configureOptions(OptionsResolver $resolver)
             },
             'choice_translation_domain' => false,
             'choice_translation_locale' => null,
-        ));
+        ]);
 
-        $resolver->setAllowedTypes('choice_translation_locale', array('null', 'string'));
+        $resolver->setAllowedTypes('choice_translation_locale', ['null', 'string']);
     }
 
     /**
@@ -98,7 +98,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -116,7 +116,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/FormType.php b/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
index cbb9f7b54781..a5b15fc17aaf 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
@@ -81,7 +81,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
         }
 
         $formConfig = $form->getConfig();
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'errors' => $form->getErrors(),
             'valid' => $form->isSubmitted() ? $form->isValid() : true,
             'value' => $form->getViewData(),
@@ -94,7 +94,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             'method' => $formConfig->getMethod(),
             'action' => $formConfig->getAction(),
             'submitted' => $form->isSubmitted(),
-        ));
+        ]);
     }
 
     /**
@@ -137,7 +137,7 @@ public function configureOptions(OptionsResolver $resolver)
             }
 
             return function (FormInterface $form) {
-                return $form->getConfig()->getCompound() ? array() : '';
+                return $form->getConfig()->getCompound() ? [] : '';
             };
         };
 
@@ -156,11 +156,11 @@ public function configureOptions(OptionsResolver $resolver)
 
         // If data is given, the form is locked to that data
         // (independent of its value)
-        $resolver->setDefined(array(
+        $resolver->setDefined([
             'data',
-        ));
+        ]);
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'data_class' => $dataClass,
             'empty_data' => $emptyData,
             'trim' => true,
@@ -169,23 +169,23 @@ public function configureOptions(OptionsResolver $resolver)
             'mapped' => true,
             'by_reference' => true,
             'error_bubbling' => $errorBubbling,
-            'label_attr' => array(),
+            'label_attr' => [],
             'inherit_data' => false,
             'compound' => true,
             'method' => 'POST',
             // According to RFC 2396 (http://www.ietf.org/rfc/rfc2396.txt)
             // section 4.2., empty URIs are considered same-document references
             'action' => '',
-            'attr' => array(),
+            'attr' => [],
             'post_max_size_message' => 'The uploaded file was too large. Please try to upload a smaller file.',
             'upload_max_size_message' => $uploadMaxSizeMessage, // internal
             'allow_file_upload' => false,
             'help' => null,
-        ));
+        ]);
 
         $resolver->setAllowedTypes('label_attr', 'array');
-        $resolver->setAllowedTypes('upload_max_size_message', array('callable'));
-        $resolver->setAllowedTypes('help', array('string', 'null'));
+        $resolver->setAllowedTypes('upload_max_size_message', ['callable']);
+        $resolver->setAllowedTypes('help', ['string', 'null']);
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php b/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
index 56161563e33e..88761598ab84 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
@@ -39,7 +39,7 @@ class LanguageType extends AbstractType implements ChoiceLoaderInterface
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 $choiceTranslationLocale = $options['choice_translation_locale'];
 
@@ -49,9 +49,9 @@ public function configureOptions(OptionsResolver $resolver)
             },
             'choice_translation_domain' => false,
             'choice_translation_locale' => null,
-        ));
+        ]);
 
-        $resolver->setAllowedTypes('choice_translation_locale', array('null', 'string'));
+        $resolver->setAllowedTypes('choice_translation_locale', ['null', 'string']);
     }
 
     /**
@@ -98,7 +98,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -116,7 +116,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php b/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
index ed8fe5d8401e..853f98a928c2 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
@@ -39,7 +39,7 @@ class LocaleType extends AbstractType implements ChoiceLoaderInterface
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 $choiceTranslationLocale = $options['choice_translation_locale'];
 
@@ -49,9 +49,9 @@ public function configureOptions(OptionsResolver $resolver)
             },
             'choice_translation_domain' => false,
             'choice_translation_locale' => null,
-        ));
+        ]);
 
-        $resolver->setAllowedTypes('choice_translation_locale', array('null', 'string'));
+        $resolver->setAllowedTypes('choice_translation_locale', ['null', 'string']);
     }
 
     /**
@@ -98,7 +98,7 @@ public function loadChoicesForValues(array $values, $value = null)
         // Optimize
         $values = array_filter($values);
         if (empty($values)) {
-            return array();
+            return [];
         }
 
         return $this->loadChoiceList($value)->getChoicesForValues($values);
@@ -116,7 +116,7 @@ public function loadValuesForChoices(array $choices, $value = null)
         // Optimize
         $choices = array_filter($choices);
         if (empty($choices)) {
-            return array();
+            return [];
         }
 
         // If no callable is set, choices are the same as values
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/MoneyType.php b/src/Symfony/Component/Form/Extension/Core/Type/MoneyType.php
index abac253e96fb..09a7383c2302 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/MoneyType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/MoneyType.php
@@ -60,7 +60,7 @@ public function configureOptions(OptionsResolver $resolver)
             'compound' => false,
         ]);
 
-        $resolver->setAllowedValues('rounding_mode', array(
+        $resolver->setAllowedValues('rounding_mode', [
             NumberToLocalizedStringTransformer::ROUND_FLOOR,
             NumberToLocalizedStringTransformer::ROUND_DOWN,
             NumberToLocalizedStringTransformer::ROUND_HALF_DOWN,
@@ -68,7 +68,7 @@ public function configureOptions(OptionsResolver $resolver)
             NumberToLocalizedStringTransformer::ROUND_HALF_UP,
             NumberToLocalizedStringTransformer::ROUND_UP,
             NumberToLocalizedStringTransformer::ROUND_CEILING,
-        ));
+        ]);
 
         $resolver->setAllowedTypes('scale', 'int');
     }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php b/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
index fb548fd932dd..360a4fb13f84 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
@@ -35,7 +35,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'choice_loader' => function (Options $options) {
                 $regions = $options['regions'];
 
@@ -46,9 +46,9 @@ public function configureOptions(OptionsResolver $resolver)
             'choice_translation_domain' => false,
             'input' => 'string',
             'regions' => \DateTimeZone::ALL,
-        ));
+        ]);
 
-        $resolver->setAllowedValues('input', array('string', 'datetimezone'));
+        $resolver->setAllowedValues('input', ['string', 'datetimezone']);
 
         $resolver->setAllowedTypes('regions', 'int');
     }
@@ -74,7 +74,7 @@ public function getBlockPrefix()
      */
     private static function getTimezones(int $regions): array
     {
-        $timezones = array();
+        $timezones = [];
 
         foreach (\DateTimeZone::listIdentifiers($regions) as $timezone) {
             $parts = explode('/', $timezone);
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
index bfb75adb7947..0924a6f9f2cf 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
@@ -40,7 +40,7 @@ public function configureOptions(OptionsResolver $resolver)
         $translationDomain = $this->translationDomain;
         $resolver->setNormalizer('upload_max_size_message', function (Options $options, $message) use ($translator, $translationDomain) {
             return function () use ($translator, $translationDomain, $message) {
-                return $translator->trans($message(), array(), $translationDomain);
+                return $translator->trans($message(), [], $translationDomain);
             };
         });
     }
diff --git a/src/Symfony/Component/Form/FormBuilder.php b/src/Symfony/Component/Form/FormBuilder.php
index 30e1ac0ebeb0..a795a1e5fa34 100644
--- a/src/Symfony/Component/Form/FormBuilder.php
+++ b/src/Symfony/Component/Form/FormBuilder.php
@@ -28,16 +28,16 @@ class FormBuilder extends FormConfigBuilder implements \IteratorAggregate, FormB
      *
      * @var FormBuilderInterface[]
      */
-    private $children = array();
+    private $children = [];
 
     /**
      * The data of children who haven't been converted to form builders yet.
      *
      * @var array
      */
-    private $unresolvedChildren = array();
+    private $unresolvedChildren = [];
 
-    public function __construct(?string $name, ?string $dataClass, EventDispatcherInterface $dispatcher, FormFactoryInterface $factory, array $options = array())
+    public function __construct(?string $name, ?string $dataClass, EventDispatcherInterface $dispatcher, FormFactoryInterface $factory, array $options = [])
     {
         parent::__construct($name, $dataClass, $dispatcher, $options);
 
@@ -47,7 +47,7 @@ public function __construct(?string $name, ?string $dataClass, EventDispatcherIn
     /**
      * {@inheritdoc}
      */
-    public function add($child, $type = null, array $options = array())
+    public function add($child, $type = null, array $options = [])
     {
         if ($this->locked) {
             throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
@@ -72,10 +72,10 @@ public function add($child, $type = null, array $options = array())
 
         // Add to "children" to maintain order
         $this->children[$child] = null;
-        $this->unresolvedChildren[$child] = array(
+        $this->unresolvedChildren[$child] = [
             'type' => $type,
             'options' => $options,
-        );
+        ];
 
         return $this;
     }
@@ -83,7 +83,7 @@ public function add($child, $type = null, array $options = array())
     /**
      * {@inheritdoc}
      */
-    public function create($name, $type = null, array $options = array())
+    public function create($name, $type = null, array $options = [])
     {
         if ($this->locked) {
             throw new BadMethodCallException('FormBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
@@ -188,8 +188,8 @@ public function getFormConfig()
         /** @var $config self */
         $config = parent::getFormConfig();
 
-        $config->children = array();
-        $config->unresolvedChildren = array();
+        $config->children = [];
+        $config->unresolvedChildren = [];
 
         return $config;
     }
@@ -256,6 +256,6 @@ private function resolveChildren()
             $this->children[$name] = $this->create($name, $info['type'], $info['options']);
         }
 
-        $this->unresolvedChildren = array();
+        $this->unresolvedChildren = [];
     }
 }
diff --git a/src/Symfony/Component/Form/FormConfigBuilder.php b/src/Symfony/Component/Form/FormConfigBuilder.php
index fbed08beda00..03c72379773e 100644
--- a/src/Symfony/Component/Form/FormConfigBuilder.php
+++ b/src/Symfony/Component/Form/FormConfigBuilder.php
@@ -39,13 +39,13 @@ class FormConfigBuilder implements FormConfigBuilderInterface
      *
      * @var array
      */
-    private static $allowedMethods = array(
+    private static $allowedMethods = [
         'GET',
         'PUT',
         'POST',
         'DELETE',
         'PATCH',
-    );
+    ];
 
     /**
      * @var bool
@@ -95,12 +95,12 @@ class FormConfigBuilder implements FormConfigBuilderInterface
     /**
      * @var array
      */
-    private $viewTransformers = array();
+    private $viewTransformers = [];
 
     /**
      * @var array
      */
-    private $modelTransformers = array();
+    private $modelTransformers = [];
 
     /**
      * @var DataMapperInterface
@@ -130,7 +130,7 @@ class FormConfigBuilder implements FormConfigBuilderInterface
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @var mixed
@@ -188,7 +188,7 @@ class FormConfigBuilder implements FormConfigBuilderInterface
      * @throws InvalidArgumentException if the data class is not a valid class or if
      *                                  the name contains invalid characters
      */
-    public function __construct($name, ?string $dataClass, EventDispatcherInterface $dispatcher, array $options = array())
+    public function __construct($name, ?string $dataClass, EventDispatcherInterface $dispatcher, array $options = [])
     {
         self::validateName($name);
 
@@ -257,7 +257,7 @@ public function resetViewTransformers()
             throw new BadMethodCallException('FormConfigBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
         }
 
-        $this->viewTransformers = array();
+        $this->viewTransformers = [];
 
         return $this;
     }
@@ -289,7 +289,7 @@ public function resetModelTransformers()
             throw new BadMethodCallException('FormConfigBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
         }
 
-        $this->modelTransformers = array();
+        $this->modelTransformers = [];
 
         return $this;
     }
diff --git a/src/Symfony/Component/Form/FormError.php b/src/Symfony/Component/Form/FormError.php
index e8921ce10b02..61be23c214fa 100644
--- a/src/Symfony/Component/Form/FormError.php
+++ b/src/Symfony/Component/Form/FormError.php
@@ -47,7 +47,7 @@ class FormError implements \Serializable
      *
      * @see \Symfony\Component\Translation\Translator
      */
-    public function __construct(?string $message, string $messageTemplate = null, array $messageParameters = array(), int $messagePluralization = null, $cause = null)
+    public function __construct(?string $message, string $messageTemplate = null, array $messageParameters = [], int $messagePluralization = null, $cause = null)
     {
         $this->message = $message;
         $this->messageTemplate = $messageTemplate ?: $message;
@@ -141,13 +141,13 @@ public function getOrigin()
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             $this->message,
             $this->messageTemplate,
             $this->messageParameters,
             $this->messagePluralization,
             $this->cause,
-        ));
+        ]);
     }
 
     /**
@@ -157,6 +157,6 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        list($this->message, $this->messageTemplate, $this->messageParameters, $this->messagePluralization, $this->cause) = unserialize($serialized, array('allowed_classes' => false));
+        list($this->message, $this->messageTemplate, $this->messageParameters, $this->messagePluralization, $this->cause) = unserialize($serialized, ['allowed_classes' => false]);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php b/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
index 67c5decb305d..f8997d546e64 100644
--- a/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
@@ -416,9 +416,9 @@ public function testLabelFormatOnButtonId()
 
     public function testHelp()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-        ));
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
@@ -442,9 +442,9 @@ public function testHelpNotSet()
 
     public function testHelpSetLinkFromWidget()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-        ));
+        ]);
         $view = $form->createView();
         $html = $this->renderRow($view);
 
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/Factory/PropertyAccessDecoratorTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/Factory/PropertyAccessDecoratorTest.php
index 43c91c363df8..e4ef0e601a66 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/Factory/PropertyAccessDecoratorTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/Factory/PropertyAccessDecoratorTest.php
@@ -38,7 +38,7 @@ protected function setUp()
 
     public function testCreateFromChoicesPropertyPath()
     {
-        $choices = array((object) array('property' => 'value'));
+        $choices = [(object) ['property' => 'value']];
 
         $this->decoratedFactory->expects($this->once())
             ->method('createListFromChoices')
@@ -47,12 +47,12 @@ public function testCreateFromChoicesPropertyPath()
                 return array_map($callback, $choices);
             }));
 
-        $this->assertSame(array('value'), $this->factory->createListFromChoices($choices, 'property'));
+        $this->assertSame(['value'], $this->factory->createListFromChoices($choices, 'property'));
     }
 
     public function testCreateFromChoicesPropertyPathInstance()
     {
-        $choices = array((object) array('property' => 'value'));
+        $choices = [(object) ['property' => 'value']];
 
         $this->decoratedFactory->expects($this->once())
             ->method('createListFromChoices')
@@ -61,7 +61,7 @@ public function testCreateFromChoicesPropertyPathInstance()
                 return array_map($callback, $choices);
             }));
 
-        $this->assertSame(array('value'), $this->factory->createListFromChoices($choices, new PropertyPath('property')));
+        $this->assertSame(['value'], $this->factory->createListFromChoices($choices, new PropertyPath('property')));
     }
 
     public function testCreateFromLoaderPropertyPath()
@@ -72,7 +72,7 @@ public function testCreateFromLoaderPropertyPath()
             ->method('createListFromLoader')
             ->with($loader, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($loader, $callback) {
-                return $callback((object) array('property' => 'value'));
+                return $callback((object) ['property' => 'value']);
             }));
 
         $this->assertSame('value', $this->factory->createListFromLoader($loader, 'property'));
@@ -81,7 +81,7 @@ public function testCreateFromLoaderPropertyPath()
     // https://github.com/symfony/symfony/issues/5494
     public function testCreateFromChoicesAssumeNullIfValuePropertyPathUnreadable()
     {
-        $choices = array(null);
+        $choices = [null];
 
         $this->decoratedFactory->expects($this->once())
             ->method('createListFromChoices')
@@ -90,7 +90,7 @@ public function testCreateFromChoicesAssumeNullIfValuePropertyPathUnreadable()
                 return array_map($callback, $choices);
             }));
 
-        $this->assertSame(array(null), $this->factory->createListFromChoices($choices, 'property'));
+        $this->assertSame([null], $this->factory->createListFromChoices($choices, 'property'));
     }
 
     // https://github.com/symfony/symfony/issues/5494
@@ -116,7 +116,7 @@ public function testCreateFromLoaderPropertyPathInstance()
             ->method('createListFromLoader')
             ->with($loader, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($loader, $callback) {
-                return $callback((object) array('property' => 'value'));
+                return $callback((object) ['property' => 'value']);
             }));
 
         $this->assertSame('value', $this->factory->createListFromLoader($loader, new PropertyPath('property')));
@@ -130,7 +130,7 @@ public function testCreateViewPreferredChoicesAsPropertyPath()
             ->method('createView')
             ->with($list, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred) {
-                return $preferred((object) array('property' => true));
+                return $preferred((object) ['property' => true]);
             }));
 
         $this->assertTrue($this->factory->createView(
@@ -147,7 +147,7 @@ public function testCreateViewPreferredChoicesAsPropertyPathInstance()
             ->method('createView')
             ->with($list, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred) {
-                return $preferred((object) array('property' => true));
+                return $preferred((object) ['property' => true]);
             }));
 
         $this->assertTrue($this->factory->createView(
@@ -165,7 +165,7 @@ public function testCreateViewAssumeNullIfPreferredChoicesPropertyPathUnreadable
             ->method('createView')
             ->with($list, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred) {
-                return $preferred((object) array('category' => null));
+                return $preferred((object) ['category' => null]);
             }));
 
         $this->assertFalse($this->factory->createView(
@@ -182,7 +182,7 @@ public function testCreateViewLabelsAsPropertyPath()
             ->method('createView')
             ->with($list, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label) {
-                return $label((object) array('property' => 'label'));
+                return $label((object) ['property' => 'label']);
             }));
 
         $this->assertSame('label', $this->factory->createView(
@@ -200,7 +200,7 @@ public function testCreateViewLabelsAsPropertyPathInstance()
             ->method('createView')
             ->with($list, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label) {
-                return $label((object) array('property' => 'label'));
+                return $label((object) ['property' => 'label']);
             }));
 
         $this->assertSame('label', $this->factory->createView(
@@ -218,7 +218,7 @@ public function testCreateViewIndicesAsPropertyPath()
             ->method('createView')
             ->with($list, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index) {
-                return $index((object) array('property' => 'index'));
+                return $index((object) ['property' => 'index']);
             }));
 
         $this->assertSame('index', $this->factory->createView(
@@ -237,7 +237,7 @@ public function testCreateViewIndicesAsPropertyPathInstance()
             ->method('createView')
             ->with($list, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index) {
-                return $index((object) array('property' => 'index'));
+                return $index((object) ['property' => 'index']);
             }));
 
         $this->assertSame('index', $this->factory->createView(
@@ -256,7 +256,7 @@ public function testCreateViewGroupsAsPropertyPath()
             ->method('createView')
             ->with($list, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy) {
-                return $groupBy((object) array('property' => 'group'));
+                return $groupBy((object) ['property' => 'group']);
             }));
 
         $this->assertSame('group', $this->factory->createView(
@@ -276,7 +276,7 @@ public function testCreateViewGroupsAsPropertyPathInstance()
             ->method('createView')
             ->with($list, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy) {
-                return $groupBy((object) array('property' => 'group'));
+                return $groupBy((object) ['property' => 'group']);
             }));
 
         $this->assertSame('group', $this->factory->createView(
@@ -297,7 +297,7 @@ public function testCreateViewAssumeNullIfGroupsPropertyPathUnreadable()
             ->method('createView')
             ->with($list, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy) {
-                return $groupBy((object) array('group' => null));
+                return $groupBy((object) ['group' => null]);
             }));
 
         $this->assertNull($this->factory->createView(
@@ -317,7 +317,7 @@ public function testCreateViewAttrAsPropertyPath()
             ->method('createView')
             ->with($list, null, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy, $attr) {
-                return $attr((object) array('property' => 'attr'));
+                return $attr((object) ['property' => 'attr']);
             }));
 
         $this->assertSame('attr', $this->factory->createView(
@@ -338,7 +338,7 @@ public function testCreateViewAttrAsPropertyPathInstance()
             ->method('createView')
             ->with($list, null, null, null, null, $this->isInstanceOf('\Closure'))
             ->will($this->returnCallback(function ($list, $preferred, $label, $index, $groupBy, $attr) {
-                return $attr((object) array('property' => 'attr'));
+                return $attr((object) ['property' => 'attr']);
             }));
 
         $this->assertSame('attr', $this->factory->createView(
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/LazyChoiceListTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/LazyChoiceListTest.php
index 57b125925435..d61d1131c5dc 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/LazyChoiceListTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/LazyChoiceListTest.php
@@ -112,11 +112,11 @@ public function testGetChoicesForValuesForwardsCallIfListNotLoaded()
     {
         $this->loader->expects($this->exactly(2))
             ->method('loadChoicesForValues')
-            ->with(array('a', 'b'))
+            ->with(['a', 'b'])
             ->will($this->returnValue('RESULT'));
 
-        $this->assertSame('RESULT', $this->list->getChoicesForValues(array('a', 'b')));
-        $this->assertSame('RESULT', $this->list->getChoicesForValues(array('a', 'b')));
+        $this->assertSame('RESULT', $this->list->getChoicesForValues(['a', 'b']));
+        $this->assertSame('RESULT', $this->list->getChoicesForValues(['a', 'b']));
     }
 
     public function testGetChoicesForValuesUsesLoadedList()
@@ -128,14 +128,14 @@ public function testGetChoicesForValuesUsesLoadedList()
 
         $this->loader->expects($this->exactly(2))
             ->method('loadChoicesForValues')
-            ->with(array('a', 'b'))
+            ->with(['a', 'b'])
             ->will($this->returnValue('RESULT'));
 
         // load choice list
         $this->list->getChoices();
 
-        $this->assertSame('RESULT', $this->list->getChoicesForValues(array('a', 'b')));
-        $this->assertSame('RESULT', $this->list->getChoicesForValues(array('a', 'b')));
+        $this->assertSame('RESULT', $this->list->getChoicesForValues(['a', 'b']));
+        $this->assertSame('RESULT', $this->list->getChoicesForValues(['a', 'b']));
     }
 
     public function testGetValuesForChoicesUsesLoadedList()
@@ -147,13 +147,13 @@ public function testGetValuesForChoicesUsesLoadedList()
 
         $this->loader->expects($this->exactly(2))
             ->method('loadValuesForChoices')
-            ->with(array('a', 'b'))
+            ->with(['a', 'b'])
             ->will($this->returnValue('RESULT'));
 
         // load choice list
         $this->list->getChoices();
 
-        $this->assertSame('RESULT', $this->list->getValuesForChoices(array('a', 'b')));
-        $this->assertSame('RESULT', $this->list->getValuesForChoices(array('a', 'b')));
+        $this->assertSame('RESULT', $this->list->getValuesForChoices(['a', 'b']));
+        $this->assertSame('RESULT', $this->list->getValuesForChoices(['a', 'b']));
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/Loader/IntlCallbackChoiceLoaderTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/Loader/IntlCallbackChoiceLoaderTest.php
index 12bfd74632f9..7571517283f9 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/Loader/IntlCallbackChoiceLoaderTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/Loader/IntlCallbackChoiceLoaderTest.php
@@ -55,11 +55,11 @@ public static function setUpBeforeClass()
         self::$value = function ($choice) {
             return $choice->value ?? null;
         };
-        self::$choices = array(
-            (object) array('value' => 'choice_one'),
-            (object) array('value' => 'choice_two'),
-        );
-        self::$choiceValues = array('choice_one', 'choice_two');
+        self::$choices = [
+            (object) ['value' => 'choice_one'],
+            (object) ['value' => 'choice_two'],
+        ];
+        self::$choiceValues = ['choice_one', 'choice_two'];
         self::$lazyChoiceList = new LazyChoiceList(self::$loader, self::$value);
     }
 
@@ -86,7 +86,7 @@ public function testLoadChoicesForValuesLoadsChoiceListOnFirstCall()
 
     public function testLoadChoicesForValuesDropsNonExistentChoices()
     {
-        $this->assertSame(array(), self::$loader->loadChoicesForValues(array('foo')));
+        $this->assertSame([], self::$loader->loadChoicesForValues(['foo']));
     }
 
     public function testLoadValuesForChoicesLoadsChoiceListOnFirstCall()
@@ -102,8 +102,8 @@ public static function tearDownAfterClass()
     {
         self::$loader = null;
         self::$value = null;
-        self::$choices = array();
-        self::$choiceValues = array();
+        self::$choices = [];
+        self::$choiceValues = [];
         self::$lazyChoiceList = null;
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/CompoundFormTest.php b/src/Symfony/Component/Form/Tests/CompoundFormTest.php
index f818fe6c3159..d1e461a7a5a8 100644
--- a/src/Symfony/Component/Form/Tests/CompoundFormTest.php
+++ b/src/Symfony/Component/Form/Tests/CompoundFormTest.php
@@ -28,10 +28,10 @@ public function testValidIfAllChildrenAreValid()
         $this->form->add($this->getBuilder('firstName')->getForm());
         $this->form->add($this->getBuilder('lastName')->getForm());
 
-        $this->form->submit(array(
+        $this->form->submit([
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
-        ));
+        ]);
 
         $this->assertTrue($this->form->isValid());
     }
@@ -41,10 +41,10 @@ public function testInvalidIfChildIsInvalid()
         $this->form->add($this->getBuilder('firstName')->getForm());
         $this->form->add($this->getBuilder('lastName')->getForm());
 
-        $this->form->submit(array(
+        $this->form->submit([
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
-        ));
+        ]);
 
         $this->form->get('lastName')->addError(new FormError('Invalid'));
 
@@ -60,7 +60,7 @@ public function testDisabledFormsValidEvenIfChildrenInvalid()
             ->add($this->getBuilder('name'))
             ->getForm();
 
-        $form->submit(array('name' => 'Jacques Doe'));
+        $form->submit(['name' => 'Jacques Doe']);
 
         $form->get('name')->addError(new FormError('Invalid'));
 
@@ -77,7 +77,7 @@ public function testSubmitForwardsNullIfNotClearMissingButValueIsExplicitlyNull(
             ->method('submit')
             ->with($this->equalTo(null));
 
-        $this->form->submit(array('firstName' => null), false);
+        $this->form->submit(['firstName' => null], false);
     }
 
     public function testSubmitForwardsNullIfValueIsMissing()
@@ -90,7 +90,7 @@ public function testSubmitForwardsNullIfValueIsMissing()
             ->method('submit')
             ->with($this->equalTo(null));
 
-        $this->form->submit(array());
+        $this->form->submit([]);
     }
 
     public function testSubmitDoesNotForwardNullIfNotClearMissing()
@@ -102,7 +102,7 @@ public function testSubmitDoesNotForwardNullIfNotClearMissing()
         $child->expects($this->never())
             ->method('submit');
 
-        $this->form->submit(array(), false);
+        $this->form->submit([], false);
     }
 
     public function testSubmitDoesNotAddExtraFieldForNullValues()
@@ -110,10 +110,10 @@ public function testSubmitDoesNotAddExtraFieldForNullValues()
         $factory = Forms::createFormFactoryBuilder()
             ->getFormFactory();
 
-        $child = $factory->createNamed('file', 'Symfony\Component\Form\Extension\Core\Type\FileType', null, array('auto_initialize' => false));
+        $child = $factory->createNamed('file', 'Symfony\Component\Form\Extension\Core\Type\FileType', null, ['auto_initialize' => false]);
 
         $this->form->add($child);
-        $this->form->submit(array('file' => null), false);
+        $this->form->submit(['file' => null], false);
 
         $this->assertCount(0, $this->form->getExtraData());
     }
@@ -128,7 +128,7 @@ public function testClearMissingFlagIsForwarded()
             ->method('submit')
             ->with($this->equalTo('foo'), false);
 
-        $this->form->submit(array('firstName' => 'foo'), false);
+        $this->form->submit(['firstName' => 'foo'], false);
     }
 
     public function testCloneChildren()
@@ -163,7 +163,7 @@ public function testAdd()
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     public function testAddUsingNameAndType()
@@ -172,17 +172,17 @@ public function testAddUsingNameAndType()
 
         $this->factory->expects($this->once())
             ->method('createNamed')
-            ->with('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+            ->with('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
                 'bar' => 'baz',
                 'auto_initialize' => false,
-            ))
+            ])
             ->will($this->returnValue($child));
 
-        $this->form->add('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', array('bar' => 'baz'));
+        $this->form->add('foo', 'Symfony\Component\Form\Extension\Core\Type\TextType', ['bar' => 'baz']);
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     public function testAddUsingIntegerNameAndType()
@@ -191,18 +191,18 @@ public function testAddUsingIntegerNameAndType()
 
         $this->factory->expects($this->once())
             ->method('createNamed')
-            ->with('0', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+            ->with('0', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
                 'bar' => 'baz',
                 'auto_initialize' => false,
-            ))
+            ])
             ->will($this->returnValue($child));
 
         // in order to make casting unnecessary
-        $this->form->add(0, 'Symfony\Component\Form\Extension\Core\Type\TextType', array('bar' => 'baz'));
+        $this->form->add(0, 'Symfony\Component\Form\Extension\Core\Type\TextType', ['bar' => 'baz']);
 
         $this->assertTrue($this->form->has(0));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array(0 => $child), $this->form->all());
+        $this->assertSame([0 => $child], $this->form->all());
     }
 
     public function testAddWithoutType()
@@ -218,7 +218,7 @@ public function testAddWithoutType()
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     public function testAddUsingNameButNoType()
@@ -239,7 +239,7 @@ public function testAddUsingNameButNoType()
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     public function testAddUsingNameButNoTypeAndOptions()
@@ -253,17 +253,17 @@ public function testAddUsingNameButNoTypeAndOptions()
 
         $this->factory->expects($this->once())
             ->method('createForProperty')
-            ->with('\stdClass', 'foo', null, array(
+            ->with('\stdClass', 'foo', null, [
                 'bar' => 'baz',
                 'auto_initialize' => false,
-            ))
+            ])
             ->will($this->returnValue($child));
 
-        $this->form->add('foo', null, array('bar' => 'baz'));
+        $this->form->add('foo', null, ['bar' => 'baz']);
 
         $this->assertTrue($this->form->has('foo'));
         $this->assertSame($this->form, $child->getParent());
-        $this->assertSame(array('foo' => $child), $this->form->all());
+        $this->assertSame(['foo' => $child], $this->form->all());
     }
 
     /**
@@ -271,7 +271,7 @@ public function testAddUsingNameButNoTypeAndOptions()
      */
     public function testAddThrowsExceptionIfAlreadySubmitted()
     {
-        $this->form->submit(array());
+        $this->form->submit([]);
         $this->form->add($this->getBuilder('foo')->getForm());
     }
 
@@ -291,7 +291,7 @@ public function testRemove()
     public function testRemoveThrowsExceptionIfAlreadySubmitted()
     {
         $this->form->add($this->getBuilder('foo')->setCompound(false)->getForm());
-        $this->form->submit(array('foo' => 'bar'));
+        $this->form->submit(['foo' => 'bar']);
         $this->form->remove('foo');
     }
 
@@ -338,10 +338,10 @@ public function testAddMapsViewDataToFormIfInitialized()
         $form = $this->getBuilder()
             ->setCompound(true)
             ->setDataMapper($mapper)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'foo' => 'bar',
-            )))
+            ]))
             ->setData('foo')
             ->getForm();
 
@@ -351,7 +351,7 @@ public function testAddMapsViewDataToFormIfInitialized()
             ->with('bar', $this->isInstanceOf('\RecursiveIteratorIterator'))
             ->will($this->returnCallback(function ($data, \RecursiveIteratorIterator $iterator) use ($child) {
                 $this->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $this->assertSame(array($child->getName() => $child), iterator_to_array($iterator));
+                $this->assertSame([$child->getName() => $child], iterator_to_array($iterator));
             }));
 
         $form->initialize();
@@ -422,7 +422,7 @@ public function testSetDataSupportsDynamicAdditionAndRemovalOfChildren()
             ->method('setData');
 
         // pass NULL to all children
-        $form->setData(array());
+        $form->setData([]);
     }
 
     public function testSetDataMapsViewDataToChildren()
@@ -431,10 +431,10 @@ public function testSetDataMapsViewDataToChildren()
         $form = $this->getBuilder()
             ->setCompound(true)
             ->setDataMapper($mapper)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'foo' => 'bar',
-            )))
+            ]))
             ->getForm();
 
         $form->add($child1 = $this->getBuilder('firstName')->getForm());
@@ -445,7 +445,7 @@ public function testSetDataMapsViewDataToChildren()
             ->with('bar', $this->isInstanceOf('\RecursiveIteratorIterator'))
             ->will($this->returnCallback(function ($data, \RecursiveIteratorIterator $iterator) use ($child1, $child2) {
                 $this->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $this->assertSame(array('firstName' => $child1, 'lastName' => $child2), iterator_to_array($iterator));
+                $this->assertSame(['firstName' => $child1, 'lastName' => $child2], iterator_to_array($iterator));
             }));
 
         $form->setData('foo');
@@ -476,7 +476,7 @@ public function testSubmitSupportsDynamicAdditionAndRemovalOfChildren()
             ->method('submit');
 
 
10000
        // pass NULL to all children
-        $this->form->submit(array());
+        $this->form->submit([]);
     }
 
     public function testSubmitMapsSubmittedChildrenOntoExistingViewData()
@@ -485,10 +485,10 @@ public function testSubmitMapsSubmittedChildrenOntoExistingViewData()
         $form = $this->getBuilder()
             ->setCompound(true)
             ->setDataMapper($mapper)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'foo' => 'bar',
-            )))
+            ]))
             ->setData('foo')
             ->getForm();
 
@@ -500,15 +500,15 @@ public function testSubmitMapsSubmittedChildrenOntoExistingViewData()
             ->with($this->isInstanceOf('\RecursiveIteratorIterator'), 'bar')
             ->will($this->returnCallback(function (\RecursiveIteratorIterator $iterator) use ($child1, $child2) {
                 $this->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $this->assertSame(array('firstName' => $child1, 'lastName' => $child2), iterator_to_array($iterator));
+                $this->assertSame(['firstName' => $child1, 'lastName' => $child2], iterator_to_array($iterator));
                 $this->assertEquals('Bernhard', $child1->getData());
                 $this->assertEquals('Schussek', $child2->getData());
             }));
 
-        $form->submit(array(
+        $form->submit([
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
-        ));
+        ]);
     }
 
     public function testMapFormsToDataIsNotInvokedIfInheritData()
@@ -518,10 +518,10 @@ public function testMapFormsToDataIsNotInvokedIfInheritData()
             ->setCompound(true)
             ->setDataMapper($mapper)
             ->setInheritData(true)
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 '' => '',
                 'foo' => 'bar',
-            )))
+            ]))
             ->getForm();
 
         $form->add($child1 = $this->getBuilder('firstName')->setCompound(false)->getForm());
@@ -530,10 +530,10 @@ public function testMapFormsToDataIsNotInvokedIfInheritData()
         $mapper->expects($this->never())
             ->method('mapFormsToData');
 
-        $form->submit(array(
+        $form->submit([
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
-        ));
+        ]);
     }
 
     /*
@@ -549,7 +549,7 @@ public function testSubmitRestoresViewDataIfCompoundAndEmpty()
             ->setData($object)
             ->getForm();
 
-        $form->submit(array());
+        $form->submit([]);
 
         $this->assertSame($object, $form->getData());
     }
@@ -572,22 +572,22 @@ public function testSubmitMapsSubmittedChildrenOntoEmptyData()
             ->with($this->isInstanceOf('\RecursiveIteratorIterator'), $object)
             ->will($this->returnCallback(function (\RecursiveIteratorIterator $iterator) use ($child) {
                 $this->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $this->assertSame(array('name' => $child), iterator_to_array($iterator));
+                $this->assertSame(['name' => $child], iterator_to_array($iterator));
             }));
 
-        $form->submit(array(
+        $form->submit([
             'name' => 'Bernhard',
-        ));
+        ]);
     }
 
     public function requestMethodProvider()
     {
-        return array(
-            array('POST'),
-            array('PUT'),
-            array('DELETE'),
-            array('PATCH'),
-        );
+        return [
+            ['POST'],
+            ['PUT'],
+            ['DELETE'],
+            ['PATCH'],
+        ];
     }
 
     /**
@@ -598,26 +598,26 @@ public function testSubmitPostOrPutRequest($method)
         $path = tempnam(sys_get_temp_dir(), 'sf2');
         touch($path);
         file_put_contents($path, 'zaza');
-        $values = array(
-            'author' => array(
+        $values = [
+            'author' => [
                 'name' => 'Bernhard',
-                'image' => array('filename' => 'foobar.png'),
-            ),
-        );
-
-        $files = array(
-            'author' => array(
-                'error' => array('image' => UPLOAD_ERR_OK),
-                'name' => array('image' => 'upload.png'),
-                'size' => array('image' => null),
-                'tmp_name' => array('image' => $path),
-                'type' => array('image' => 'image/png'),
-            ),
-        );
-
-        $request = new Request(array(), $values, array(), array(), $files, array(
+                'image' => ['filename' => 'foobar.png'],
+            ],
+        ];
+
+        $files = [
+            'author' => [
+                'error' => ['image' => UPLOAD_ERR_OK],
+                'name' => ['image' => 'upload.png'],
+                'size' => ['image' => null],
+                'tmp_name' => ['image' => $path],
+                'type' => ['image' => 'image/png'],
+            ],
+        ];
+
+        $request = new Request([], $values, [], [], $files, [
             'REQUEST_METHOD' => $method,
-        ));
+        ]);
 
         $form = $this->getBuilder('author')
             ->setMethod($method)
@@ -647,24 +647,24 @@ public function testSubmitPostOrPutRequestWithEmptyRootFormName($method)
         touch($path);
         file_put_contents($path, 'zaza');
 
-        $values = array(
+        $values = [
             'name' => 'Bernhard',
             'extra' => 'data',
-        );
+        ];
 
-        $files = array(
-            'image' => array(
+        $files = [
+            'image' => [
                 'error' => UPLOAD_ERR_OK,
                 'name' => 'upload.png',
                 'size' => null,
                 'tmp_name' => $path,
                 'type' => 'image/png',
-            ),
-        );
+            ],
+        ];
 
-        $request = new Request(array(), $values, array(), array(), $files, array(
+        $request = new Request([], $values, [], [], $files, [
             'REQUEST_METHOD' => $method,
-        ));
+        ]);
 
         $form = $this->getBuilder('')
             ->setMethod($method)
@@ -681,7 +681,7 @@ public function testSubmitPostOrPutRequestWithEmptyRootFormName($method)
 
         $this->assertEquals('Bernhard', $form['name']->getData());
         $this->assertEquals($file, $form['image']->getData());
-        $this->assertEquals(array('extra' => 'data'), $form->getExtraData());
+        $this->assertEquals(['extra' => 'data'], $form->getExtraData());
 
         unlink($path);
     }
@@ -695,21 +695,21 @@ public function testSubmitPostOrPutRequestWithSingleChildForm($method)
         touch($path);
         file_put_contents($path, 'zaza');
 
-        $files = array(
-            'image' => array(
+        $files = [
+            'image' => [
                 'error' => UPLOAD_ERR_OK,
                 'name' => 'upload.png',
                 'size' => null,
                 'tmp_name' => $path,
                 'type' => 'image/png',
-            ),
-        );
+            ],
+        ];
 
-        $request = new Request(array(), array(), array(), array(), $files, array(
+        $request = new Request([], [], [], [], $files, [
             'REQUEST_METHOD' => $method,
-        ));
+        ]);
 
-        $form = $this->getBuilder('image', null, null, array('allow_file_upload' => true))
+        $form = $this->getBuilder('image', null, null, ['allow_file_upload' => true])
             ->setMethod($method)
             ->setRequestHandler(new HttpFoundationRequestHandler())
             ->getForm();
@@ -732,13 +732,13 @@ public function testSubmitPostOrPutRequestWithSingleChildFormUploadedFile($metho
         touch($path);
         file_put_contents($path, 'zaza');
 
-        $values = array(
+        $values = [
             'name' => 'Bernhard',
-        );
+        ];
 
-        $request = new Request(array(), $values, array(), array(), array(), array(
+        $request = new Request([], $values, [], [], [], [
             'REQUEST_METHOD' => $method,
-        ));
+        ]);
 
         $form = $this->getBuilder('name')
             ->setMethod($method)
@@ -754,16 +754,16 @@ public function testSubmitPostOrPutRequestWithSingleChildFormUploadedFile($metho
 
     public function testSubmitGetRequest()
     {
-        $values = array(
-            'author' => array(
+        $values = [
+            'author' => [
                 'firstName' => 'Bernhard',
                 'lastName' => 'Schussek',
-            ),
-        );
+            ],
+        ];
 
-        $request = new Request($values, array(), array(), array(), array(), array(
+        $request = new Request($values, [], [], [], [], [
             'REQUEST_METHOD' => 'GET',
-        ));
+        ]);
 
         $form = $this->getBuilder('author')
             ->setMethod('GET')
@@ -782,15 +782,15 @@ public function testSubmitGetRequest()
 
     public function testSubmitGetRequestWithEmptyRootFormName()
     {
-        $values = array(
+        $values = [
             'firstName' => 'Bernhard',
             'lastName' => 'Schussek',
             'extra' => 'data',
-        );
+        ];
 
-        $request = new Request($values, array(), array(), array(), array(), array(
+        $request = new Request($values, [], [], [], [], [
             'REQUEST_METHOD' => 'GET',
-        ));
+        ]);
 
         $form = $this->getBuilder('')
             ->setMethod('GET')
@@ -805,7 +805,7 @@ public function testSubmitGetRequestWithEmptyRootFormName()
 
         $this->assertEquals('Bernhard', $form['firstName']->getData());
         $this->assertEquals('Schussek', $form['lastName']->getData());
-        $this->assertEquals(array('extra' => 'data'), $form->getExtraData());
+        $this->assertEquals(['extra' => 'data'], $form->getExtraData());
     }
 
     public function testGetErrors()
@@ -821,7 +821,7 @@ public function testGetErrors()
              (string) $errors
         );
 
-        $this->assertSame(array($error1, $error2), iterator_to_array($errors));
+        $this->assertSame([$error1, $error2], iterator_to_array($errors));
     }
 
     public function testGetErrorsDeep()
@@ -843,7 +843,7 @@ public function testGetErrorsDeep()
         );
 
         $this->assertSame(
-             array($error1, $error2, $nestedError),
+             [$error1, $error2, $nestedError],
              iterator_to_array($errors)
         );
     }
@@ -883,7 +883,7 @@ public function testGetErrorsDeepRecursive()
     public function testCreateViewWithChildren()
     {
         $type = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormTypeInterface')->getMock();
-        $options = array('a' => 'Foo', 'b' => 'Bar');
+        $options = ['a' => 'Foo', 'b' => 'Bar'];
         $field1 = $this->getMockForm('foo');
         $field2 = $this->getMockForm('bar');
         $view = new FormView();
@@ -913,7 +913,7 @@ public function testCreateViewWithChildren()
         $type->expects($this->once())
             ->method('buildView')
             ->with($view, $this->form, $options)
-            ->will($this->returnCallback($assertChildViewsEqual(array())));
+            ->will($this->returnCallback($assertChildViewsEqual([])));
 
         // Then add the first child form
         $field1->expects($this->once())
@@ -930,7 +930,7 @@ public function testCreateViewWithChildren()
         $type->expects($this->once())
             ->method('finishView')
             ->with($view, $this->form, $options)
-            ->will($this->returnCallback($assertChildViewsEqual(array('foo' => $field1View, 'bar' => $field2View))));
+            ->will($this->returnCallback($assertChildViewsEqual(['foo' => $field1View, 'bar' => $field2View])));
 
         $this->assertSame($view, $this->form->createView());
     }
@@ -943,8 +943,8 @@ public function testNoClickedButtonBeforeSubmission()
     public function testNoClickedButton()
     {
         $button = $this->getMockBuilder('Symfony\Component\Form\SubmitButton')
-            ->setConstructorArgs(array(new SubmitButtonBuilder('submit')))
-            ->setMethods(array('isClicked'))
+            ->setConstructorArgs([new SubmitButtonBuilder('submit')])
+            ->setMethods(['isClicked'])
             ->getMock();
 
         $button->expects($this->any())
@@ -957,7 +957,7 @@ public function testNoClickedButton()
         $this->form->setParent($parentForm);
         $this->form->add($button);
         $this->form->add($nestedForm);
-        $this->form->submit(array());
+        $this->form->submit([]);
 
         $this->assertNull($this->form->getClickedButton());
     }
@@ -965,8 +965,8 @@ public function testNoClickedButton()
     public function testClickedButton()
     {
         $button = $this->getMockBuilder('Symfony\Component\Form\SubmitButton')
-            ->setConstructorArgs(array(new SubmitButtonBuilder('submit')))
-            ->setMethods(array('isClicked'))
+            ->setConstructorArgs([new SubmitButtonBuilder('submit')])
+            ->setMethods(['isClicked'])
             ->getMock();
 
         $button->expects($this->any())
@@ -974,7 +974,7 @@ public function testClickedButton()
             ->will($this->returnValue(true));
 
         $this->form->add($button);
-        $this->form->submit(array());
+        $this->form->submit([]);
 
         $this->assertSame($button, $this->form->getClickedButton());
     }
@@ -984,8 +984,8 @@ public function testClickedButtonFromNestedForm()
         $button = $this->getBuilder('submit')->getForm();
 
         $nestedForm = $this->getMockBuilder('Symfony\Component\Form\Form')
-            ->setConstructorArgs(array($this->getBuilder('nested')))
-            ->setMethods(array('getClickedButton'))
+            ->setConstructorArgs([$this->getBuilder('nested')])
+            ->setMethods(['getClickedButton'])
             ->getMock();
 
         $nestedForm->expects($this->any())
@@ -993,7 +993,7 @@ public function testClickedButtonFromNestedForm()
             ->will($this->returnValue($button));
 
         $this->form->add($nestedForm);
-        $this->form->submit(array());
+        $this->form->submit([]);
 
         $this->assertSame($button, $this->form->getClickedButton());
     }
@@ -1003,8 +1003,8 @@ public function testClickedButtonFromParentForm()
         $button = $this->getBuilder('submit')->getForm();
 
         $parentForm = $this->getMockBuilder('Symfony\Component\Form\Form')
-            ->setConstructorArgs(array($this->getBuilder('parent')))
-            ->setMethods(array('getClickedButton'))
+            ->setConstructorArgs([$this->getBuilder('parent')])
+            ->setMethods(['getClickedButton'])
             ->getMock();
 
         $parentForm->expects($this->any())
@@ -1012,7 +1012,7 @@ public function testClickedButtonFromParentForm()
             ->will($this->returnValue($button));
 
         $this->form->setParent($parentForm);
-        $this->form->submit(array());
+        $this->form->submit([]);
 
         $this->assertSame($button, $this->form->getClickedButton());
     }
@@ -1029,10 +1029,10 @@ public function testDisabledButtonIsNotSubmitted()
             ->add($submit)
         ;
 
-        $form->submit(array(
+        $form->submit([
             'text' => '',
             'submit' => '',
-        ));
+        ]);
 
         $this->assertTrue($submit->isDisabled());
         $this->assertFalse($submit->isClicked());
@@ -1042,17 +1042,17 @@ public function testDisabledButtonIsNotSubmitted()
     public function testArrayTransformationFailureOnSubmit()
     {
         $this->form->add($this->getBuilder('foo')->setCompound(false)->getForm());
-        $this->form->add($this->getBuilder('bar', null, null, array('multiple' => false))->setCompound(false)->getForm());
+        $this->form->add($this->getBuilder('bar', null, null, ['multiple' => false])->setCompound(false)->getForm());
 
-        $this->form->submit(array(
-            'foo' => array('foo'),
-            'bar' => array('bar'),
-        ));
+        $this->form->submit([
+            'foo' => ['foo'],
+            'bar' => ['bar'],
+        ]);
 
         $this->assertNull($this->form->get('foo')->getData());
         $this->assertSame('Submitted data was expected to be text or number, array given.', $this->form->get('foo')->getTransformationFailure()->getMessage());
 
-        $this->assertSame(array('bar'), $this->form->get('bar')->getData());
+        $this->assertSame(['bar'], $this->form->get('bar')->getData());
     }
 
     public function testFileUpload()
@@ -1061,10 +1061,10 @@ public function testFileUpload()
         $this->form->add($this->getBuilder('foo')->setRequestHandler($reqHandler)->getForm());
         $this->form->add($this->getBuilder('bar')->setRequestHandler($reqHandler)->getForm());
 
-        $this->form->submit(array(
+        $this->form->submit([
             'foo' => 'Foo',
             'bar' => new UploadedFile(__FILE__, 'upload.png', 'image/png', UPLOAD_ERR_OK),
-        ));
+        ]);
 
         $this->assertSame('Submitted data was expected to be text or number, file upload given.', $this->form->get('bar')->getTransformationFailure()->getMessage());
         $this->assertNull($this->form->get('bar')->getData());
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/BooleanToStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/BooleanToStringTransformerTest.php
index bbb9d0792abe..d4adb4409ccd 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/BooleanToStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/BooleanToStringTransformerTest.php
@@ -71,7 +71,7 @@ public function testReverseTransform()
 
     public function testCustomFalseValues()
     {
-        $customFalseTransformer = new BooleanToStringTransformer(self::TRUE_VALUE, array('0', 'myFalse', true));
+        $customFalseTransformer = new BooleanToStringTransformer(self::TRUE_VALUE, ['0', 'myFalse', true]);
         $this->assertFalse($customFalseTransformer->reverseTransform('myFalse'));
         $this->assertFalse($customFalseTransformer->reverseTransform('0'));
         $this->assertFalse($customFalseTransformer->reverseTransform(true));
@@ -82,12 +82,12 @@ public function testCustomFalseValues()
      */
     public function testTrueValueContainedInFalseValues()
     {
-        new BooleanToStringTransformer('0', array(null, '0'));
+        new BooleanToStringTransformer('0', [null, '0']);
     }
 
     public function testBeStrictOnTrueInFalseValueCheck()
     {
-        $transformer = new BooleanToStringTransformer('0', array(null, false));
+        $transformer = new BooleanToStringTransformer('0', [null, false]);
         $this->assertInstanceOf(BooleanToStringTransformer::class, $transformer);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CheckboxTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CheckboxTypeTest.php
index e6c65d88eff4..d8f0cba0255d 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CheckboxTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CheckboxTypeTest.php
@@ -178,20 +178,20 @@ public function provideCustomModelTransformerData()
      */
     public function testCustomFalseValues($falseValue)
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
-            'false_values' => array($falseValue),
-        ));
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
+            'false_values' => [$falseValue],
+        ]);
         $form->submit($falseValue);
         $this->assertFalse($form->getData());
     }
 
     public function provideCustomFalseValues()
     {
-        return array(
-            array(''),
-            array('false'),
-            array('0'),
-        );
+        return [
+            [''],
+            ['false'],
+            ['0'],
+        ];
     }
 
     /**
@@ -200,9 +200,9 @@ public function provideCustomFalseValues()
     public function testDontAllowNonArrayFalseValues()
     {
         $this->expectExceptionMessageRegExp('/"false_values" with value "invalid" is expected to be of type "array"/');
-        $this->factory->create(static::TESTED_TYPE, null, array(
+        $this->factory->create(static::TESTED_TYPE, null, [
             'false_values' => 'invalid',
-        ));
+        ]);
     }
 
     public function testSubmitNull($expected = null, $norm = null, $view = null)
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php
index b715dee48ecd..8c72b46bbcd2 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php
@@ -45,9 +45,9 @@ public function testCountriesAreSelectable()
     public function testChoiceTranslationLocaleOption()
     {
         $choices = $this->factory
-            ->create(static::TESTED_TYPE, null, array(
+            ->create(static::TESTED_TYPE, null, [
                 'choice_translation_locale' => 'uk',
-            ))
+            ])
             ->createView()->vars['choices'];
 
         // Don't check objects for identity
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php
index fabe863a8e48..a02bae031add 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php
@@ -42,9 +42,9 @@ public function testCurrenciesAreSelectable()
     public function testChoiceTranslationLocaleOption()
     {
         $choices = $this->factory
-            ->create(static::TESTED_TYPE, null, array(
+            ->create(static::TESTED_TYPE, null, [
                 'choice_translation_locale' => 'uk',
-            ))
+            ])
             ->createView()->vars['choices'];
 
         // Don't check objects for identity
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php
index e03eade187e4..4f4966c5f8d2 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php
@@ -54,26 +54,26 @@ public function testSubmitDateTime()
 
     public function testSubmitDateTimeImmutable()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'date_widget' => 'choice',
-            'years' => array(2010),
+            'years' => [2010],
             'time_widget' => 'choice',
             'input' => 'datetime_immutable',
-        ));
+        ]);
 
-        $form->submit(array(
-            'date' => array(
+        $form->submit([
+            'date' => [
                 'day' => '2',
                 'month' => '6',
                 'year' => '2010',
-            ),
-            'time' => array(
+            ],
+            'time' => [
                 'hour' => '3',
                 'minute' => '4',
-            ),
-        ));
+            ],
+        ]);
 
         $dateTime = new \DateTimeImmutable('2010-06-02 03:04:00 UTC');
 
@@ -249,12 +249,12 @@ public function testSubmitDifferentTimezonesDateTime()
 
     public function testSubmitDifferentTimezonesDateTimeImmutable()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'America/New_York',
             'view_timezone' => 'Pacific/Tahiti',
             'widget' => 'single_text',
             'input' => 'datetime_immutable',
-        ));
+        ]);
 
         $outputTime = new \DateTimeImmutable('2010-06-02 03:04:00 Pacific/Tahiti');
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
index 9bc45fed7ff0..8a627c27e4a9 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTypeTest.php
@@ -112,13 +112,13 @@ public function testSubmitFromSingleTextDateTimeImmutable()
 
         \Locale::setDefault('de_DE');
 
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'format' => \IntlDateFormatter::MEDIUM,
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'widget' => 'single_text',
             'input' => 'datetime_immutable',
-        ));
+        ]);
 
         $form->submit('2.6.2010');
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/FileTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/FileTypeTest.php
index a7edef01442b..14340989cecb 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/FileTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/FileTypeTest.php
@@ -25,7 +25,7 @@ public function testSetData()
     {
         $form = $this->factory->createBuilder(static::TESTED_TYPE)->getForm();
         $data = $this->getMockBuilder('Symfony\Component\HttpFoundation\File\File')
-            ->setConstructorArgs(array(__DIR__.'/../../../Fixtures/foo', 'foo'))
+            ->setConstructorArgs([__DIR__.'/../../../Fixtures/foo', 'foo'])
             ->getMock();
 
         $form->setData($data);
@@ -52,14 +52,14 @@ public function testSubmit(RequestHandlerInterface $requestHandler)
      */
     public function testSetDataMultiple(RequestHandlerInterface $requestHandler)
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'multiple' => true,
-        ))->setRequestHandler($requestHandler)->getForm();
+        ])->setRequestHandler($requestHandler)->getForm();
 
-        $data = array(
+        $data = [
             $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo', 'foo.jpg'),
             $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo2', 'foo2.jpg'),
-        );
+        ];
 
         $form->setData($data);
         $this->assertSame($data, $form->getData());
@@ -70,14 +70,14 @@ public function testSetDataMultiple(RequestHandlerInterface $requestHandler)
      */
     public function testSubmitMultiple(RequestHandlerInterface $requestHandler)
     {
-        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, array(
+        $form = $this->factory->createBuilder(static::TESTED_TYPE, null, [
             'multiple' => true,
-        ))->setRequestHandler($requestHandler)->getForm();
+        ])->setRequestHandler($requestHandler)->getForm();
 
-        $data = array(
+        $data = [
             $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo', 'foo.jpg'),
             $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo2', 'foo2.jpg'),
-        );
+        ];
 
         $form->submit($data);
         $this->assertSame($data, $form->getData());
@@ -93,9 +93,9 @@ public function testSubmitMultiple(RequestHandlerInterface $requestHandler)
     public function testDontPassValueToView(RequestHandlerInterface $requestHandler)
     {
         $form = $this->factory->createBuilder(static::TESTED_TYPE)->setRequestHandler($requestHandler)->getForm();
-        $form->submit(array(
+        $form->submit([
             'file' => $this->createUploadedFileMock($requestHandler, __DIR__.'/../../../Fixtures/foo', 'foo.jpg'),
-        ));
+        ]);
 
         $this->assertEquals('', $form->createView()->vars['value']);
     }
@@ -115,15 +115,15 @@ public function testSubmitNull($expected = null, $norm = null, $view = null)
 
     public function testSubmitNullWhenMultiple()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'multiple' => true,
-        ));
+        ]);
         // submitted data when an input file is uploaded without choosing any file
-        $form->submit(array(null));
+        $form->submit([null]);
 
-        $this->assertSame(array(), $form->getData());
-        $this->assertSame(array(), $form->getNormData());
-        $this->assertSame(array(), $form->getViewData());
+        $this->assertSame([], $form->getData());
+        $this->assertSame([], $form->getNormData());
+        $this->assertSame([], $form->getViewData());
     }
 
     /**
@@ -145,16 +145,16 @@ public function testSubmittedFilePathsAreDropped(RequestHandlerInterface $reques
     public function testMultipleSubmittedFilePathsAreDropped(RequestHandlerInterface $requestHandler)
     {
         $form = $this->factory
-            ->createBuilder(static::TESTED_TYPE, null, array(
+            ->createBuilder(static::TESTED_TYPE, null, [
                 'multiple' => true,
-            ))
+            ])
             ->setRequestHandler($requestHandler)
             ->getForm();
-        $form->submit(array(
+        $form->submit([
             'file:///etc/passwd',
             $this->createUploadedFileMock(new HttpFoundationRequestHandler(), __DIR__.'/../../../Fixtures/foo', 'foo.jpg'),
             $this->createUploadedFileMock(new NativeRequestHandler(), __DIR__.'/../../../Fixtures/foo2', 'foo2.jpg'),
-        ));
+        ]);
 
         $this->assertCount(1, $form->getData());
     }
@@ -165,24 +165,24 @@ public function testMultipleSubmittedFilePathsAreDropped(RequestHandlerInterface
     public function testSubmitNonArrayValueWhenMultiple(RequestHandlerInterface $requestHandler)
     {
         $form = $this->factory
-            ->createBuilder(static::TESTED_TYPE, null, array(
+            ->createBuilder(static::TESTED_TYPE, null, [
                 'multiple' => true,
-            ))
+            ])
             ->setRequestHandler($requestHandler)
             ->getForm();
         $form->submit(null);
 
-        $this->assertSame(array(), $form->getData());
-        $this->assertSame(array(), $form->getNormData());
-        $this->assertSame(array(), $form->getViewData());
+        $this->assertSame([], $form->getData());
+        $this->assertSame([], $form->getNormData());
+        $this->assertSame([], $form->getViewData());
     }
 
     public function requestHandlerProvider()
     {
-        return array(
-            array(new HttpFoundationRequestHandler()),
-            array(new NativeRequestHandler()),
-        );
+        return [
+            [new HttpFoundationRequestHandler()],
+            [new NativeRequestHandler()],
+        ];
     }
 
     private function createUploadedFileMock(RequestHandlerInterface $requestHandler, $path, $originalName)
@@ -191,12 +191,12 @@ private function createUploadedFileMock(RequestHandlerInterface $requestHandler,
             return new UploadedFile($path, $originalName, null, null, true);
         }
 
-        return array(
+        return [
             'name' => $originalName,
             'error' => 0,
             'type' => 'text/plain',
             'tmp_name' => $path,
             'size' => null,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php
index fc1102c32f85..7d748fa65096 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php
@@ -44,9 +44,9 @@ public function testCountriesAreSelectable()
     public function testChoiceTranslationLocaleOption()
     {
         $choices = $this->factory
-            ->create(static::TESTED_TYPE, null, array(
+            ->create(static::TESTED_TYPE, null, [
                 'choice_translation_locale' => 'uk',
-            ))
+            ])
             ->createView()->vars['choices'];
 
         // Don't check objects for identity
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php
index bdcaa08ee43f..63ae7aa0681f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php
@@ -42,9 +42,9 @@ public function testLocalesAreSelectable()
     public function testChoiceTranslationLocaleOption()
     {
         $choices = $this->factory
-            ->create(static::TESTED_TYPE, null, array(
+            ->create(static::TESTED_TYPE, null, [
                 'choice_translation_locale' => 'uk',
-            ))
+            ])
             ->createView()->vars['choices'];
 
         // Don't check objects for identity
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/MoneyTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/MoneyTypeTest.php
index 6d62d55fb497..507a6ffe374a 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/MoneyTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/MoneyTypeTest.php
@@ -85,7 +85,7 @@ public function testSubmitNullUsesDefaultEmptyData($emptyData = '10.00', $expect
 
     public function testDefaultFormattingWithDefaultRounding()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('scale' => 0));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['scale' => 0]);
         $form->setData('12345.54321');
 
         $this->assertSame('12346', $form->createView()->vars['value']);
@@ -93,7 +93,7 @@ public function testDefaultFormattingWithDefaultRounding()
 
     public function testDefaultFormattingWithSpecifiedRounding()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array('scale' => 0, 'rounding_mode' => \NumberFormatter::ROUND_DOWN));
+        $form = $this->factory->create(static::TESTED_TYPE, null, ['scale' => 0, 'rounding_mode' => \NumberFormatter::ROUND_DOWN]);
         $form->setData('12345.54321');
 
         $this->assertSame('12345', $form->createView()->vars['value']);
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimeTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimeTypeTest.php
index 3f2d9d712748..88c190be0d3f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimeTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/TimeTypeTest.php
@@ -41,16 +41,16 @@ public function testSubmitDateTime()
 
     public function testSubmitDateTimeImmutable()
     {
-        $form = $this->factory->create(static::TESTED_TYPE, null, array(
+        $form = $this->factory->create(static::TESTED_TYPE, null, [
             'model_timezone' => 'UTC',
             'view_timezone' => 'UTC',
             'input' => 'datetime_immutable',
-        ));
+        ]);
 
-        $input = array(
+        $input = [
             'hour' => '3',
             'minute' => '4',
-        );
+        ];
 
         $form->submit($input);
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataExtractorTest.php b/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataExtractorTest.php
index 0693b28c135a..8e66a9801e10 100644
--- a/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataExtractorTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/DataCollector/FormDataExtractorTest.php
@@ -62,14 +62,14 @@ public function testExtractConfiguration()
             ->setType($type)
             ->getForm();
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'name',
             'name' => 'name',
             'type_class' => 'stdClass',
             'synchronized' => true,
-            'passed_options' => array(),
-            'resolved_options' => array(),
-        ), $this->dataExtractor->extractConfiguration($form));
+            'passed_options' => [],
+            'resolved_options' => [],
+        ], $this->dataExtractor->extractConfiguration($form));
     }
 
     public function testExtractConfigurationSortsPassedOptions()
@@ -79,11 +79,11 @@ public function testExtractConfigurationSortsPassedOptions()
             ->method('getInnerType')
             ->will($this->returnValue(new \stdClass()));
 
-        $options = array(
+        $options = [
             'b' => 'foo',
             'a' => 'bar',
             'c' => 'baz',
-        );
+        ];
 
         $form = $this->createBuilder('name')
             ->setType($type)
@@ -92,18 +92,18 @@ public function testExtractConfigurationSortsPassedOptions()
             ->setAttribute('data_collector/passed_options', $options)
             ->getForm();
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'name',
             'name' => 'name',
             'type_class' => 'stdClass',
             'synchronized' => true,
-            'passed_options' => array(
+            'passed_options' => [
                 'a' => 'bar',
                 'b' => 'foo',
                 'c' => 'baz',
-            ),
-            'resolved_options' => array(),
-        ), $this->dataExtractor->extractConfiguration($form));
+            ],
+            'resolved_options' => [],
+        ], $this->dataExtractor->extractConfiguration($form));
     }
 
     public function testExtractConfigurationSortsResolvedOptions()
@@ -113,28 +113,28 @@ public function testExtractConfigurationSortsResolvedOptions()
             ->method('getInnerType')
             ->will($this->returnValue(new \stdClass()));
 
-        $options = array(
+        $options = [
             'b' => 'foo',
             'a' => 'bar',
             'c' => 'baz',
-        );
+        ];
 
         $form = $this->createBuilder('name', $options)
             ->setType($type)
             ->getForm();
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'name',
             'name' => 'name',
             'type_class' => 'stdClass',
             'synchronized' => true,
-            'passed_options' => array(),
-            'resolved_options' => array(
+            'passed_options' => [],
+            'resolved_options' => [
                 'a' => 'bar',
                 'b' => 'foo',
                 'c' => 'baz',
-            ),
-        ), $this->dataExtractor->extractConfiguration($form));
+            ],
+        ], $this->dataExtractor->extractConfiguration($form));
     }
 
     public function testExtractConfigurationBuildsIdRecursively()
@@ -159,14 +159,14 @@ public function testExtractConfigurationBuildsIdRecursively()
         $grandParent->add($parent);
         $parent->add($form);
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'grandParent_parent_name',
             'name' => 'name',
             'type_class' => 'stdClass',
             'synchronized' => true,
-            'passed_options' => array(),
-            'resolved_options' => array(),
-        ), $this->dataExtractor->extractConfiguration($form));
+            'passed_options' => [],
+            'resolved_options' => [],
+        ], $this->dataExtractor->extractConfiguration($form));
     }
 
     public function testExtractDefaultData()
@@ -175,50 +175,50 @@ public function testExtractDefaultData()
 
         $form->setData('Foobar');
 
-        $this->assertSame(array(
-            'default_data' => array(
+        $this->assertSame([
+            'default_data' => [
                 'norm' => 'Foobar',
-            ),
-            'submitted_data' => array(),
-        ), $this->dataExtractor->extractDefaultData($form));
+            ],
+            'submitted_data' => [],
+        ], $this->dataExtractor->extractDefaultData($form));
     }
 
     public function testExtractDefaultDataStoresModelDataIfDifferent()
     {
         $form = $this->createBuilder('name')
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
                 'Foo' => 'Bar',
-            )))
+            ]))
             ->getForm();
 
         $form->setData('Foo');
 
-        $this->assertSame(array(
-            'default_data' => array(
+        $this->assertSame([
+            'default_data' => [
                 'norm' => 'Bar',
                 'model' => 'Foo',
-            ),
-            'submitted_data' => array(),
-        ), $this->dataExtractor->extractDefaultData($form));
+            ],
+            'submitted_data' => [],
+        ], $this->dataExtractor->extractDefaultData($form));
     }
 
     public function testExtractDefaultDataStoresViewDataIfDifferent()
     {
         $form = $this->createBuilder('name')
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 'Foo' => 'Bar',
-            )))
+            ]))
             ->getForm();
 
         $form->setData('Foo');
 
-        $this->assertSame(array(
-            'default_data' => array(
+        $this->assertSame([
+            'default_data' => [
                 'norm' => 'Foo',
                 'view' => 'Bar',
-            ),
-            'submitted_data' => array(),
-        ), $this->dataExtractor->extractDefaultData($form));
+            ],
+            'submitted_data' => [],
+        ], $this->dataExtractor->extractDefaultData($form));
     }
 
     public function testExtractSubmittedData()
@@ -227,55 +227,55 @@ public function testExtractSubmittedData()
 
         $form->submit('Foobar');
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foobar',
-            ),
-            'errors' => array(),
+            ],
+            'errors' => [],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresModelDataIfDifferent()
     {
         $form = $this->createBuilder('name')
-            ->addModelTransformer(new FixedDataTransformer(array(
+            ->addModelTransformer(new FixedDataTransformer([
                 'Foo' => 'Bar',
                 '' => '',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('Bar');
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Bar',
                 'model' => 'Foo',
-            ),
-            'errors' => array(),
+            ],
+            'errors' => [],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresViewDataIfDifferent()
     {
         $form = $this->createBuilder('name')
-            ->addViewTransformer(new FixedDataTransformer(array(
+            ->addViewTransformer(new FixedDataTransformer([
                 'Foo' => 'Bar',
                 '' => '',
-            )))
+            ]))
             ->getForm();
 
         $form->submit('Bar');
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foo',
                 'view' => 'Bar',
-            ),
-            'errors' => array(),
+            ],
+            'errors' => [],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresErrors()
@@ -285,15 +285,15 @@ public function testExtractSubmittedDataStoresErrors()
         $form->submit('Foobar');
         $form->addError(new FormError('Invalid!'));
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foobar',
-            ),
-            'errors' => array(
-                array('message' => 'Invalid!', 'origin' => spl_object_hash($form), 'trace' => array()),
-            ),
+            ],
+            'errors' => [
+                ['message' => 'Invalid!', 'origin' => spl_object_hash($form), 'trace' => []],
+            ],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresErrorOrigin()
@@ -306,15 +306,15 @@ public function testExtractSubmittedDataStoresErrorOrigin()
         $form->submit('Foobar');
         $form->addError($error);
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foobar',
-            ),
-            'errors' => array(
-                array('message' => 'Invalid!', 'origin' => spl_object_hash($form), 'trace' => array()),
-            ),
+            ],
+            'errors' => [
+                ['message' => 'Invalid!', 'origin' => spl_object_hash($form), 'trace' => []],
+            ],
             'synchronized' => true,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractSubmittedDataStoresErrorCause()
@@ -322,10 +322,10 @@ public function testExtractSubmittedDataStoresErrorCause()
         $form = $this->createBuilder('name')->getForm();
 
         $exception = new \Exception();
-        $violation = new ConstraintViolation('Foo', 'Foo', array(), 'Root', 'property.path', 'Invalid!', null, null, null, $exception);
+        $violation = new ConstraintViolation('Foo', 'Foo', [], 'Root', 'property.path', 'Invalid!', null, null, null, $exception);
 
         $form->submit('Foobar');
-        $form->addError(new FormError('Invalid!', null, array(), null, $violation));
+        $form->addError(new FormError('Invalid!', null, [], null, $violation));
         $origin = spl_object_hash($form);
 
         $this->assertDumpMatchesFormat(<<<EODUMP
@@ -375,42 +375,42 @@ function () {
 
         $form->submit('Foobar');
 
-        $this->assertSame(array(
-            'submitted_data' => array(
+        $this->assertSame([
+            'submitted_data' => [
                 'norm' => 'Foobar',
                 'model' => null,
-            ),
-            'errors' => array(),
+            ],
+            'errors' => [],
             'synchronized' => false,
-        ), $this->dataExtractor->extractSubmittedData($form));
+        ], $this->dataExtractor->extractSubmittedData($form));
     }
 
     public function testExtractViewVariables()
     {
         $view = new FormView();
 
-        $view->vars = array(
+        $view->vars = [
             'b' => 'foo',
             'a' => 'bar',
             'c' => 'baz',
             'id' => 'foo_bar',
             'name' => 'bar',
-        );
+        ];
 
-        $this->assertSame(array(
+        $this->assertSame([
             'id' => 'foo_bar',
             'name' => 'bar',
-            'view_vars' => array(
+            'view_vars' => [
                 'a' => 'bar',
                 'b' => 'foo',
                 'c' => 'baz',
                 'id' => 'foo_bar',
                 'name' => 'bar',
-            ),
-        ), $this->dataExtractor->extractViewVariables($view));
+            ],
+        ], $this->dataExtractor->extractViewVariables($view));
     }
 
-    private function createBuilder(string $name, array $options = array()): FormBuilder
+    private function createBuilder(string $name, array $options = []): FormBuilder
     {
         return new FormBuilder($name, null, $this->dispatcher, $this->factory, $options);
     }
diff --git a/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
index a94d57ec475a..bde163591c58 100644
--- a/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
@@ -27,18 +27,18 @@ public function testGetTypeExtensions()
         $typeExtension2 = $this->createFormTypeExtensionMock('test');
         $typeExtension3 = $this->createFormTypeExtensionMock('other');
 
-        $extensions = array(
-            'test' => new \ArrayIterator(array($typeExtension1, $typeExtension2)),
-            'other' => new \ArrayIterator(array($typeExtension3)),
-        );
+        $extensions = [
+            'test' => new \ArrayIterator([$typeExtension1, $typeExtension2]),
+            'other' => new \ArrayIterator([$typeExtension3]),
+        ];
 
-        $extension = new DependencyInjectionExtension($container, $extensions, array());
+        $extension = new DependencyInjectionExtension($container, $extensions, []);
 
         $this->assertTrue($extension->hasTypeExtensions('test'));
         $this->assertTrue($extension->hasTypeExtensions('other'));
         $this->assertFalse($extension->hasTypeExtensions('unknown'));
-        $this->assertSame(array($typeExtension1, $typeExtension2), $extension->getTypeExtensions('test'));
-        $this->assertSame(array($typeExtension3), $extension->getTypeExtensions('other'));
+        $this->assertSame([$typeExtension1, $typeExtension2], $extension->getTypeExtensions('test'));
+        $this->assertSame([$typeExtension3], $extension->getTypeExtensions('other'));
     }
 
     /**
@@ -49,11 +49,11 @@ public function testThrowExceptionForInvalidExtendedType()
         $container = $this->getMockBuilder('Psr\Container\ContainerInterface')->getMock();
         $container->expects($this->never())->method('get');
 
-        $extensions = array(
-            'test' => new \ArrayIterator(array($this->createFormTypeExtensionMock('unmatched'))),
-        );
+        $extensions = [
+            'test' => new \ArrayIterator([$this->createFormTypeExtensionMock('unmatched')]),
+        ];
 
-        $extension = new DependencyInjectionExtension($container, $extensions, array());
+        $extension = new DependencyInjectionExtension($container, $extensions, []);
 
         $extension->getTypeExtensions('test');
     }
@@ -61,7 +61,7 @@ public function testThrowExceptionForInvalidExtendedType()
     public function testGetTypeGuesser()
     {
         $container = $this->createContainerMock();
-        $extension = new DependencyInjectionExtension($container, array(), array($this->getMockBuilder(FormTypeGuesserInterface::class)->getMock()));
+        $extension = new DependencyInjectionExtension($container, [], [$this->getMockBuilder(FormTypeGuesserInterface::class)->getMock()]);
 
         $this->assertInstanceOf(FormTypeGuesserChain::class, $extension->getTypeGuesser());
     }
@@ -69,7 +69,7 @@ public function testGetTypeGuesser()
     public function testGetTypeGuesserReturnsNullWhenNoTypeGuessersHaveBeenConfigured()
     {
         $container = $this->createContainerMock();
-        $extension = new DependencyInjectionExtension($container, array(), array());
+        $extension = new DependencyInjectionExtension($container, [], []);
 
         $this->assertNull($extension->getTypeGuesser());
     }
@@ -77,7 +77,7 @@ public function testGetTypeGuesserReturnsNullWhenNoTypeGuessersHaveBeenConfigure
     private function createContainerMock()
     {
         return $this->getMockBuilder('Psr\Container\ContainerInterface')
-            ->setMethods(array('get', 'has'))
+            ->setMethods(['get', 'has'])
             ->getMock();
     }
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
index 7decfd060429..7910dd0b559e 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
@@ -48,7 +48,7 @@ protected function setUp()
     {
         $this->dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
         $this->factory = $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock();
-        $this->serverParams = $this->getMockBuilder('Symfony\Component\Form\Extension\Validator\Util\ServerParams')->setMethods(array('getNormalizedIniPostMaxSize', 'getContentLength'))->getMock();
+        $this->serverParams = $this->getMockBuilder('Symfony\Component\Form\Extension\Validator\Util\ServerParams')->setMethods(['getNormalizedIniPostMaxSize', 'getContentLength'])->getMock();
 
         parent::setUp();
 
@@ -63,12 +63,12 @@ protected function createValidator()
     public function testValidate()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => array('group1', 'group2'));
+        $options = ['validation_groups' => ['group1', 'group2']];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -78,19 +78,19 @@ public function testValidate()
     public function testValidateConstraints()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $constraint1 = new NotNull(array('groups' => array('group1', 'group2')));
-        $constraint2 = new NotBlank(array('groups' => 'group2'));
+        $constraint1 = new NotNull(['groups' => ['group1', 'group2']]);
+        $constraint2 = new NotBlank(['groups' => 'group2']);
 
-        $options = array(
-            'validation_groups' => array('group1', 'group2'),
-            'constraints' => array($constraint1, $constraint2),
-        );
+        $options = [
+            'validation_groups' => ['group1', 'group2'],
+            'constraints' => [$constraint1, $constraint2],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
         // First default constraints
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         // Then custom constraints
         $this->expectValidateValueAt(1, 'data', $object, $constraint1, 'group1');
@@ -109,16 +109,16 @@ public function testValidateChildIfValidConstraint()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $options = array(
-            'validation_groups' => array('group1', 'group2'),
-            'constraints' => array(new Valid()),
-        );
+        $options = [
+            'validation_groups' => ['group1', 'group2'],
+            'constraints' => [new Valid()],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)->getForm();
         $parent->add($form);
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -133,7 +133,7 @@ public function testDontValidateIfParentWithoutValidConstraint()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $options = array('validation_groups' => array('group1', 'group2'));
+        $options = ['validation_groups' => ['group1', 'group2']];
         $form = $this->getBuilder('name', '\stdClass', $options)->getForm();
         $parent->add($form);
 
@@ -152,7 +152,7 @@ public function testMissingConstraintIndex()
         $form = new FormBuilder('name', '\stdClass', $this->dispatcher, $this->factory);
         $form = $form->setData($object)->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('Default'));
+        $this->expectValidateAt(0, 'data', $object, ['Default']);
 
         $this->validator->validate($form, new Form());
 
@@ -162,17 +162,17 @@ public function testMissingConstraintIndex()
     public function testValidateConstraintsOptionEvenIfNoValidConstraint()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $constraint1 = new NotNull(array('groups' => array('group1', 'group2')));
-        $constraint2 = new NotBlank(array('groups' => 'group2'));
+        $constraint1 = new NotNull(['groups' => ['group1', 'group2']]);
+        $constraint2 = new NotBlank(['groups' => 'group2']);
 
         $parent = $this->getBuilder('parent', null)
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $options = array(
-            'validation_groups' => array('group1', 'group2'),
-            'constraints' => array($constraint1, $constraint2),
-        );
+        $options = [
+            'validation_groups' => ['group1', 'group2'],
+            'constraints' => [$constraint1, $constraint2],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
@@ -190,9 +190,9 @@ public function testDontValidateIfNoValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $form = $this->getBuilder('name', '\stdClass', array(
-                'validation_groups' => array(),
-            ))
+        $form = $this->getBuilder('name', '\stdClass', [
+                'validation_groups' => [],
+            ])
             ->setData($object)
             ->getForm();
 
@@ -211,10 +211,10 @@ public function testDontValidateConstraintsIfNoValidationGroups()
         $constraint1 = $this->getMockBuilder('Symfony\Component\Validator\Constraint')->getMock();
         $constraint2 = $this->getMockBuilder('Symfony\Component\Validator\Constraint')->getMock();
 
-        $options = array(
-            'validation_groups' => array(),
-            'constraints' => array($constraint1, $constraint2),
-        );
+        $options = [
+            'validation_groups' => [],
+            'constraints' => [$constraint1, $constraint2],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
@@ -233,13 +233,13 @@ public function testDontValidateIfNotSynchronized()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $form = $this->getBuilder('name', '\stdClass', array(
+        $form = $this->getBuilder('name', '\stdClass', [
                 'invalid_message' => 'invalid_message_key',
                 // Invalid message parameters must be supported, because the
                 // invalid message can be a translation key
                 // see https://github.com/symfony/symfony/issues/5144
-                'invalid_message_parameters' => array('{{ foo }}' => 'bar'),
-            ))
+                'invalid_message_parameters' => ['{{ foo }}' => 'bar'],
+            ])
             ->setData($object)
             ->addViewTransformer(new CallbackTransformer(
                 function ($data) { return $data; },
@@ -267,14 +267,14 @@ public function testAddInvalidErrorEvenIfNoValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $form = $this->getBuilder('name', '\stdClass', array(
+        $form = $this->getBuilder('name', '\stdClass', [
                 'invalid_message' => 'invalid_message_key',
                 // Invalid message parameters must be supported, because the
                 // invalid message can be a translation key
                 // see https://github.com/symfony/symfony/issues/5144
-                'invalid_message_parameters' => array('{{ foo }}' => 'bar'),
-                'validation_groups' => array(),
-            ))
+                'invalid_message_parameters' => ['{{ foo }}' => 'bar'],
+                'validation_groups' => [],
+            ])
             ->setData($object)
             ->addViewTransformer(new CallbackTransformer(
                     function ($data) { return $data; },
@@ -304,11 +304,11 @@ public function testDontValidateConstraintsIfNotSynchronized()
         $constraint1 = $this->getMockBuilder('Symfony\Component\Validator\Constraint')->getMock();
         $constraint2 = $this->getMockBuilder('Symfony\Component\Validator\Constraint')->getMock();
 
-        $options = array(
+        $options = [
             'invalid_message' => 'invalid_message_key',
-            'validation_groups' => array('group1', 'group2'),
-            'constraints' => array($constraint1, $constraint2),
-        );
+            'validation_groups' => ['group1', 'group2'],
+            'constraints' => [$constraint1, $constraint2],
+        ];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->addViewTransformer(new CallbackTransformer(
@@ -354,7 +354,7 @@ function () { throw new TransformationFailedException(); }
             ->getForm();
 
         // Launch transformer
-        $form->submit(array('child' => 'foo'));
+        $form->submit(['child' => 'foo']);
 
         $this->expectNoValidate();
 
@@ -366,13 +366,13 @@ function () { throw new TransformationFailedException(); }
     public function testHandleGroupSequenceValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => new GroupSequence(array('group1', 'group2')));
+        $options = ['validation_groups' => new GroupSequence(['group1', 'group2'])];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, new GroupSequence(array('group1', 'group2')));
-        $this->expectValidateAt(1, 'data', $object, new GroupSequence(array('group1', 'group2')));
+        $this->expectValidateAt(0, 'data', $object, new GroupSequence(['group1', 'group2']));
+        $this->expectValidateAt(1, 'data', $object, new GroupSequence(['group1', 'group2']));
 
         $this->validator->validate($form, new Form());
 
@@ -382,12 +382,12 @@ public function testHandleGroupSequenceValidationGroups()
     public function testHandleCallbackValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => array($this, 'getValidationGroups'));
+        $options = ['validation_groups' => [$this, 'getValidationGroups']];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -397,12 +397,12 @@ public function testHandleCallbackValidationGroups()
     public function testDontExecuteFunctionNames()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => 'header');
+        $options = ['validation_groups' => 'header'];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('header'));
+        $this->expectValidateAt(0, 'data', $object, ['header']);
 
         $this->validator->validate($form, new Form());
 
@@ -412,14 +412,14 @@ public function testDontExecuteFunctionNames()
     public function testHandleClosureValidationGroups()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
-        $options = array('validation_groups' => function (FormInterface $form) {
-            return array('group1', 'group2');
-        });
+        $options = ['validation_groups' => function (FormInterface $form) {
+            return ['group1', 'group
10000
2'];
+        }];
         $form = $this->getBuilder('name', '\stdClass', $options)
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -434,19 +434,19 @@ public function testUseValidationGroupOfClickedButton()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $form = $this->getForm('name', '\stdClass', array(
+        $form = $this->getForm('name', '\stdClass', [
             'validation_groups' => 'form_group',
-            'constraints' => array(new Valid()),
-        ));
+            'constraints' => [new Valid()],
+        ]);
 
         $parent->add($form);
-        $parent->add($this->getSubmitButton('submit', array(
+        $parent->add($this->getSubmitButton('submit', [
             'validation_groups' => 'button_group',
-        )));
+        ]));
 
-        $parent->submit(array('name' => $object, 'submit' => ''));
+        $parent->submit(['name' => $object, 'submit' => '']);
 
-        $this->expectValidateAt(0, 'data', $object, array('button_group'));
+        $this->expectValidateAt(0, 'data', $object, ['button_group']);
 
         $this->validator->validate($form, new Form());
 
@@ -461,19 +461,19 @@ public function testDontUseValidationGroupOfUnclickedButton()
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $form = $this->getForm('name', '\stdClass', array(
+        $form = $this->getForm('name', '\stdClass', [
             'validation_groups' => 'form_group',
-            'constraints' => array(new Valid()),
-        ));
+            'constraints' => [new Valid()],
+        ]);
 
         $parent->add($form);
-        $parent->add($this->getSubmitButton('submit', array(
+        $parent->add($this->getSubmitButton('submit', [
             'validation_groups' => 'button_group',
-        )));
+        ]));
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('form_group'));
+        $this->expectValidateAt(0, 'data', $object, ['form_group']);
 
         $this->validator->validate($form, new Form());
 
@@ -484,18 +484,18 @@ public function testUseInheritedValidationGroup()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $parentOptions = array('validation_groups' => 'group');
+        $parentOptions = ['validation_groups' => 'group'];
         $parent = $this->getBuilder('parent', null, $parentOptions)
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $formOptions = array('constraints' => array(new Valid()));
+        $formOptions = ['constraints' => [new Valid()]];
         $form = $this->getBuilder('name', '\stdClass', $formOptions)->getForm();
         $parent->add($form);
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('group'));
+        $this->expectValidateAt(0, 'data', $object, ['group']);
 
         $this->validator->validate($form, new Form());
 
@@ -506,18 +506,18 @@ public function testUseInheritedCallbackValidationGroup()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $parentOptions = array('validation_groups' => array($this, 'getValidationGroups'));
+        $parentOptions = ['validation_groups' => [$this, 'getValidationGroups']];
         $parent = $this->getBuilder('parent', null, $parentOptions)
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $formOptions = array('constraints' => array(new Valid()));
+        $formOptions = ['constraints' => [new Valid()]];
         $form = $this->getBuilder('name', '\stdClass', $formOptions)->getForm();
         $parent->add($form);
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -528,22 +528,22 @@ public function testUseInheritedClosureValidationGroup()
     {
         $object = $this->getMockBuilder('\stdClass')->getMock();
 
-        $parentOptions = array(
+        $parentOptions = [
             'validation_groups' => function (FormInterface $form) {
-                return array('group1', 'group2');
+                return ['group1', 'group2'];
             },
-        );
+        ];
         $parent = $this->getBuilder('parent', null, $parentOptions)
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->getForm();
-        $formOptions = array('constraints' => array(new Valid()));
+        $formOptions = ['constraints' => [new Valid()]];
         $form = $this->getBuilder('name', '\stdClass', $formOptions)->getForm();
         $parent->add($form);
 
         $form->setData($object);
 
-        $this->expectValidateAt(0, 'data', $object, array('group1', 'group2'));
+        $this->expectValidateAt(0, 'data', $object, ['group1', 'group2']);
 
         $this->validator->validate($form, new Form());
 
@@ -557,7 +557,7 @@ public function testAppendPropertyPath()
             ->setData($object)
             ->getForm();
 
-        $this->expectValidateAt(0, 'data', $object, array('Default'));
+        $this->expectValidateAt(0, 'data', $object, ['Default']);
 
         $this->validator->validate($form, new Form());
 
@@ -579,13 +579,13 @@ public function testDontWalkScalars()
 
     public function testViolationIfExtraData()
     {
-        $form = $this->getBuilder('parent', null, array('extra_fields_message' => 'Extra!'))
+        $form = $this->getBuilder('parent', null, ['extra_fields_message' => 'Extra!'])
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->add($this->getBuilder('child'))
             ->getForm();
 
-        $form->submit(array('foo' => 'bar'));
+        $form->submit(['foo' => 'bar']);
 
         $this->expectNoValidate();
 
@@ -593,20 +593,20 @@ public function testViolationIfExtraData()
 
         $this->buildViolation('Extra!')
             ->setParameter('{{ extra_fields }}', '"foo"')
-            ->setInvalidValue(array('foo' => 'bar'))
+            ->setInvalidValue(['foo' => 'bar'])
             ->setCode(Form::NO_SUCH_FIELD_ERROR)
             ->assertRaised();
     }
 
     public function testViolationFormatIfMultipleExtraFields()
     {
-        $form = $this->getBuilder('parent', null, array('extra_fields_message' => 'Extra!'))
+        $form = $this->getBuilder('parent', null, ['extra_fields_message' => 'Extra!'])
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->add($this->getBuilder('child'))
             ->getForm();
 
-        $form->submit(array('foo' => 'bar', 'baz' => 'qux', 'quux' => 'quuz'));
+        $form->submit(['foo' => 'bar', 'baz' => 'qux', 'quux' => 'quuz']);
 
         $this->expectNoValidate();
 
@@ -614,7 +614,7 @@ public function testViolationFormatIfMultipleExtraFields()
 
         $this->buildViolation('Extra!')
             ->setParameter('{{ extra_fields }}', '"foo", "baz", "quux"')
-            ->setInvalidValue(array('foo' => 'bar', 'baz' => 'qux', 'quux' => 'quuz'))
+            ->setInvalidValue(['foo' => 'bar', 'baz' => 'qux', 'quux' => 'quuz'])
             ->setCode(Form::NO_SUCH_FIELD_ERROR)
             ->assertRaised();
     }
@@ -624,13 +624,13 @@ public function testNoViolationIfAllowExtraData()
         $context = $this->getMockExecutionContext();
 
         $form = $this
-            ->getBuilder('parent', null, array('allow_extra_fields' => true))
+            ->getBuilder('parent', null, ['allow_extra_fields' => true])
             ->setCompound(true)
             ->setDataMapper($this->getDataMapper())
             ->add($this->getBuilder('child'))
             ->getForm();
 
-        $form->submit(array('foo' => 'bar'));
+        $form->submit(['foo' => 'bar']);
 
         $context->expects($this->never())
             ->method('addViolation');
@@ -646,7 +646,7 @@ public function testNoViolationIfAllowExtraData()
      */
     public function getValidationGroups(FormInterface $form)
     {
-        return array('group1', 'group2');
+        return ['group1', 'group2'];
     }
 
     private function getMockExecutionContext()
@@ -667,22 +667,22 @@ private function getMockExecutionContext()
         return $context;
     }
 
-    private function getBuilder(string $name = 'name', string $dataClass = null, array $options = array()): FormBuilder
+    private function getBuilder(string $name = 'name', string $dataClass = null, array $options = []): FormBuilder
     {
-        $options = array_replace(array(
-            'constraints' => array(),
-            'invalid_message_parameters' => array(),
-        ), $options);
+        $options = array_replace([
+            'constraints' => [],
+            'invalid_message_parameters' => [],
+        ], $options);
 
         return new FormBuilder($name, $dataClass, $this->dispatcher, $this->factory, $options);
     }
 
-    private function getForm($name = 'name', $dataClass = null, array $options = array())
+    private function getForm($name = 'name', $dataClass = null, array $options = [])
     {
         return $this->getBuilder($name, $dataClass, $options)->getForm();
     }
 
-    private function getSubmitButton($name = 'name', array $options = array())
+    private function getSubmitButton($name = 'name', array $options = [])
     {
         $builder = new SubmitButtonBuilder($name, $options);
 
diff --git a/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php b/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
index 2aaf59579f9b..954aac601454 100644
--- a/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
+++ b/src/Symfony/Component/HttpFoundation/AcceptHeaderItem.php
@@ -21,9 +21,9 @@ class AcceptHeaderItem
     private $value;
     private $quality = 1.0;
     private $index = 0;
-    private $attributes = array();
+    private $attributes = [];
 
-    public function __construct(string $value, array $attributes = array())
+    public function __construct(string $value, array $attributes = [])
     {
         $this->value = $value;
         foreach ($attributes as $name => $value) {
diff --git a/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php b/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
index 07ef8005083d..0f5c9bb6707b 100644
--- a/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
+++ b/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
@@ -44,7 +44,7 @@ class BinaryFileResponse extends Response
      * @param bool                $autoEtag           Whether the ETag header should be automatically set
      * @param bool                $autoLastModified   Whether the Last-Modified header should be automatically set
      */
-    public function __construct($file, int $status = 200, array $headers = array(), bool $public = true, string $contentDisposition = null, bool $autoEtag = false, bool $autoLastModified = true)
+    public function __construct($file, int $status = 200, array $headers = [], bool $public = true, string $contentDisposition = null, bool $autoEtag = false, bool $autoLastModified = true)
     {
         parent::__construct(null, $status, $headers);
 
@@ -66,7 +66,7 @@ public function __construct($file, int $status = 200, array $headers = array(),
      *
      * @return static
      */
-    public static function create($file = null, $status = 200, $headers = array(), $public = true, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
+    public static function create($file = null, $status = 200, $headers = [], $public = true, $contentDisposition = null, $autoEtag = false, $autoLastModified = true)
     {
         return new static($file, $status, $headers, $public, $contentDisposition, $autoEtag, $autoLastModified);
     }
@@ -234,7 +234,7 @@ public function prepare(Request $request)
             if (!$request->headers->has('If-Range') || $this->hasValidIfRangeHeader($request->headers->get('If-Range'))) {
                 $range = $request->headers->get('Range');
 
-                list($start, $end) = explode('-', substr($range, 6), 2) + array(0);
+                list($start, $end) = explode('-', substr($range, 6), 2) + [0];
 
                 $end = ('' === $end) ? $fileSize - 1 : (int) $end;
 
diff --git a/src/Symfony/Component/HttpFoundation/Cookie.php b/src/Symfony/Component/HttpFoundation/Cookie.php
index 2332bb4dbaeb..bce80f183cd1 100644
--- a/src/Symfony/Component/HttpFoundation/Cookie.php
+++ b/src/Symfony/Component/HttpFoundation/Cookie.php
@@ -41,7 +41,7 @@ class Cookie
      */
     public static function fromString($cookie, $decode = false)
     {
-        $data = array(
+        $data = [
             'expires' => 0,
             'path' => '/',
             'domain' => null,
@@ -49,7 +49,7 @@ public static function fromString($cookie, $decode = false)
             'httponly' => false,
             'raw' => !$decode,
             'samesite' => null,
-        );
+        ];
 
         $parts = HeaderUtils::split($cookie, ';=');
         $part = array_shift($parts);
@@ -114,7 +114,7 @@ public function __construct(string $name, string $value = null, $expire = 0, ?st
             $sameSite = strtolower($sameSite);
         }
 
-        if (!\in_array($sameSite, array(self::SAMESITE_LAX, self::SAMESITE_STRICT, null), true)) {
+        if (!\in_array($sameSite, [self::SAMESITE_LAX, self::SAMESITE_STRICT, null], true)) {
             throw new \InvalidArgumentException('The "sameSite" parameter value is not valid.');
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/HeaderBag.php b/src/Symfony/Component/HttpFoundation/HeaderBag.php
index 8f51ef9dba0f..b37a72e47ebd 100644
--- a/src/Symfony/Component/HttpFoundation/HeaderBag.php
+++ b/src/Symfony/Component/HttpFoundation/HeaderBag.php
@@ -18,13 +18,13 @@
  */
 class HeaderBag implements \IteratorAggregate, \Countable
 {
-    protected $headers = array();
-    protected $cacheControl = array();
+    protected $headers = [];
+    protected $cacheControl = [];
 
     /**
      * @param array $headers An array of HTTP headers
      */
-    public function __construct(array $headers = array())
+    public function __construct(array $headers = [])
     {
         foreach ($headers as $key => $values) {
             $this->set($key, $values);
@@ -80,9 +80,9 @@ public function keys()
      *
      * @param array $headers An array of HTTP headers
      */
-    public function replace(array $headers = array())
+    public function replace(array $headers = [])
     {
-        $this->headers = array();
+        $this->headers = [];
         $this->add($headers);
     }
 
@@ -114,10 +114,10 @@ public function get($key, $default = null, $first = true)
 
         if (!array_key_exists($key, $headers)) {
             if (null === $default) {
-                return $first ? null : array();
+                return $first ? null : [];
             }
 
-            return $first ? $default : array($default);
+            return $first ? $default : [$default];
         }
 
         if ($first) {
@@ -148,7 +148,7 @@ public function set($key, $values, $replace = true)
             }
         } else {
             if (true === $replace || !isset($this->headers[$key])) {
-                $this->headers[$key] = array($values);
+                $this->headers[$key] = [$values];
             } else {
                 $this->headers[$key][] = $values;
             }
@@ -196,7 +196,7 @@ public function remove($key)
         unset($this->headers[$key]);
 
         if ('cache-control' === $key) {
-            $this->cacheControl = array();
+            $this->cacheControl = [];
         }
     }
 
diff --git a/src/Symfony/Component/HttpFoundation/HeaderUtils.php b/src/Symfony/Component/HttpFoundation/HeaderUtils.php
index 3ee50b87302e..5d23704e192e 100644
--- a/src/Symfony/Component/HttpFoundation/HeaderUtils.php
+++ b/src/Symfony/Component/HttpFoundation/HeaderUtils.php
@@ -80,7 +80,7 @@ public static function split(string $header, string $separators): array
      */
     public static function combine(array $parts): array
     {
-        $assoc = array();
+        $assoc = [];
         foreach ($parts as $part) {
             $name = strtolower($part[0]);
             $value = $part[1] ?? true;
@@ -104,7 +104,7 @@ public static function combine(array $parts): array
      */
     public static function toString(array $assoc, string $separator): string
     {
-        $parts = array();
+        $parts = [];
         foreach ($assoc as $name => $value) {
             if (true === $value) {
                 $parts[] = $name;
@@ -149,7 +149,7 @@ private static function groupParts(array $matches, string $separators): array
         $partSeparators = substr($separators, 1);
 
         $i = 0;
-        $partMatches = array();
+        $partMatches = [];
         foreach ($matches as $match) {
             if (isset($match['separator']) && $match['separator'] === $separator) {
                 ++$i;
@@ -158,7 +158,7 @@ private static function groupParts(array $matches, string $separators): array
             }
         }
 
-        $parts = array();
+        $parts = [];
         if ($partSeparators) {
             foreach ($partMatches as $matches) {
                 $parts[] = self::groupParts($matches, $partSeparators);
diff --git a/src/Symfony/Component/HttpFoundation/JsonResponse.php b/src/Symfony/Component/HttpFoundation/JsonResponse.php
index f10262e88e76..817cbb9afc4d 100644
--- a/src/Symfony/Component/HttpFoundation/JsonResponse.php
+++ b/src/Symfony/Component/HttpFoundation/JsonResponse.php
@@ -39,7 +39,7 @@ class JsonResponse extends Response
      * @param array $headers An array of response headers
      * @param bool  $json    If the data is already a JSON string
      */
-    public function __construct($data = null, int $status = 200, array $headers = array(), bool $json = false)
+    public function __construct($data = null, int $status = 200, array $headers = [], bool $json = false)
     {
         parent::__construct('', $status, $headers);
 
@@ -64,7 +64,7 @@ public function __construct($data = null, int $status = 200, array $headers = ar
      *
      * @return static
      */
-    public static function create($data = null, $status = 200, $headers = array())
+    public static function create($data = null, $status = 200, $headers = [])
     {
         return new static($data, $status, $headers);
     }
@@ -72,7 +72,7 @@ public static function create($data = null, $status = 200, $headers = array())
     /**
      * Make easier the creation of JsonResponse from raw json.
      */
-    public static function fromJsonString($data = null, $status = 200, $headers = array())
+    public static function fromJsonString($data = null, $status = 200, $headers = [])
     {
         return new static($data, $status, $headers, true);
     }
@@ -94,11 +94,11 @@ public function setCallback($callback = null)
             //      JsonpCallbackValidator is released under the MIT License. See https://github.com/willdurand/JsonpCallbackValidator/blob/v1.1.0/LICENSE for details.
             //      (c) William Durand <william.durand1@gmail.com>
             $pattern = '/^[$_\p{L}][$_\p{L}\p{Mn}\p{Mc}\p{Nd}\p{Pc}\x{200C}\x{200D}]*(?:\[(?:"(?:\\\.|[^"\\\])*"|\'(?:\\\.|[^\'\\\])*\'|\d+)\])*?$/u';
-            $reserved = array(
+            $reserved = [
                 'break', 'do', 'instanceof', 'typeof', 'case', 'else', 'new', 'var', 'catch', 'finally', 'return', 'void', 'continue', 'for', 'switch', 'while',
                 'debugger', 'function', 'this', 'with', 'default', 'if', 'throw', 'delete', 'in', 'try', 'class', 'enum', 'extends', 'super',  'const', 'export',
                 'import', 'implements', 'let', 'private', 'public', 'yield', 'interface', 'package', 'protected', 'static', 'null', 'true', 'false',
-            );
+            ];
             $parts = explode('.', $callback);
             foreach ($parts as $part) {
                 if (!preg_match($pattern, $part) || \in_array($part, $reserved, true)) {
@@ -137,7 +137,7 @@ public function setJson($json)
      *
      * @throws \InvalidArgumentException
      */
-    public function setData($data = array())
+    public function setData($data = [])
     {
         try {
             $data = json_encode($data, $this->encodingOptions);
diff --git a/src/Symfony/Component/HttpFoundation/RedirectResponse.php b/src/Symfony/Component/HttpFoundation/RedirectResponse.php
index 11f71a03426c..22e5fbb2d07c 100644
--- a/src/Symfony/Component/HttpFoundation/RedirectResponse.php
+++ b/src/Symfony/Component/HttpFoundation/RedirectResponse.php
@@ -32,7 +32,7 @@ class RedirectResponse extends Response
      *
      * @see http://tools.ietf.org/html/rfc2616#section-10.3
      */
-    public function __construct(?string $url, int $status = 302, array $headers = array())
+    public function __construct(?string $url, int $status = 302, array $headers = [])
     {
         parent::__construct('', $status, $headers);
 
@@ -56,7 +56,7 @@ public function __construct(?string $url, int $status = 302, array $headers = ar
      *
      * @return static
      */
-    public static function create($url = '', $status = 302, $headers = array())
+    public static function create($url = '', $status = 302, $headers = [])
     {
         return new static($url, $status, $headers);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index 665c9c0e12b0..d7f4101181e1 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -52,17 +52,17 @@ class Request
     /**
      * @var string[]
      */
-    protected static $trustedProxies = array();
+    protected static $trustedProxies = [];
 
     /**
      * @var string[]
      */
-    protected static $trustedHostPatterns = array();
+    protected static $trustedHostPatterns = [];
 
     /**
      * @var string[]
      */
-    protected static $trustedHosts = array();
+    protected static $trustedHosts = [];
 
     protected static $httpMethodParameterOverride = false;
 
@@ -197,12 +197,12 @@ class Request
 
     private static $trustedHeaderSet = -1;
 
-    private static $forwardedParams = array(
+    private static $forwardedParams = [
         self::HEADER_X_FORWARDED_FOR => 'for',
         self::HEADER_X_FORWARDED_HOST => 'host',
         self::HEADER_X_FORWARDED_PROTO => 'proto',
         self::HEADER_X_FORWARDED_PORT => 'host',
-    );
+    ];
 
     /**
      * Names for headers that can be trusted when
@@ -213,13 +213,13 @@ class Request
      * The other headers are non-standard, but widely used
      * by popular reverse proxies (like Apache mod_proxy or Amazon EC2).
      */
-    private static $trustedHeaders = array(
+    private static $trustedHeaders = [
         self::HEADER_FORWARDED => 'FORWARDED',
         self::HEADER_X_FORWARDED_FOR => 'X_FORWARDED_FOR',
         self::HEADER_X_FORWARDED_HOST => 'X_FORWARDED_HOST',
         self::HEADER_X_FORWARDED_PROTO => 'X_FORWARDED_PROTO',
         self::HEADER_X_FORWARDED_PORT => 'X_FORWARDED_PORT',
-    );
+    ];
 
     /**
      * @param array                $query      The GET parameters
@@ -230,7 +230,7 @@ class Request
      * @param array                $server     The SERVER parameters
      * @param string|resource|null $content    The raw body data
      */
-    public function __construct(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    public function __construct(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         $this->initialize($query, $request, $attributes, $cookies, $files, $server, $content);
     }
@@ -248,7 +248,7 @@ public function __construct(array $query = array(), array $request = array(), ar
      * @param array                $server     The SERVER parameters
      * @param string|resource|null $content    The raw body data
      */
-    public function initialize(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    public function initialize(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         $this->request = new ParameterBag($request);
         $this->query = new ParameterBag($query);
@@ -278,10 +278,10 @@ public function initialize(array $query = array(), array $request = array(), arr
      */
     public static function createFromGlobals()
     {
-        $request = self::createRequestFromFactory($_GET, $_POST, array(), $_COOKIE, $_FILES, $_SERVER);
+        $request = self::createRequestFromFactory($_GET, $_POST, [], $_COOKIE, $_FILES, $_SERVER);
 
         if (0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded')
-            && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), array('PUT', 'DELETE', 'PATCH'))
+            && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), ['PUT', 'DELETE', 'PATCH'])
         ) {
             parse_str($request->getContent(), $data);
             $request->request = new ParameterBag($data);
@@ -306,9 +306,9 @@ public static function createFromGlobals()
      *
      * @return static
      */
-    public static function create($uri, $method = 'GET', $parameters = array(), $cookies = array(), $files = array(), $server = array(), $content = null)
+    public static function create($uri, $method = 'GET', $parameters = [], $cookies = [], $files = [], $server = [], $content = null)
     {
-        $server = array_replace(array(
+        $server = array_replace([
             'SERVER_NAME' => 'localhost',
             'SERVER_PORT' => 80,
             'HTTP_HOST' => 'localhost',
@@ -321,7 +321,7 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
             'SCRIPT_FILENAME' => '',
             'SERVER_PROTOCOL' => 'HTTP/1.1',
             'REQUEST_TIME' => time(),
-        ), $server);
+        ], $server);
 
         $server['PATH_INFO'] = '';
         $server['REQUEST_METHOD'] = strtoupper($method);
@@ -369,10 +369,10 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
                 // no break
             case 'PATCH':
                 $request = $parameters;
-                $query = array();
+                $query = [];
                 break;
             default:
-                $request = array();
+                $request = [];
                 $query = $parameters;
                 break;
         }
@@ -395,7 +395,7 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
         $server['REQUEST_URI'] = $components['path'].('' !== $queryString ? '?'.$queryString : '');
         $server['QUERY_STRING'] = $queryString;
 
-        return self::createRequestFromFactory($query, $request, array(), $cookies, $files, $server, $content);
+        return self::createRequestFromFactory($query, $request, [], $cookies, $files, $server, $content);
     }
 
     /**
@@ -499,7 +499,7 @@ public function __toString()
         }
 
         $cookieHeader = '';
-        $cookies = array();
+        $cookies = [];
 
         foreach ($this->cookies as $k => $v) {
             $cookies[] = $k.'='.$v;
@@ -533,19 +533,19 @@ public function overrideGlobals()
 
         foreach ($this->headers->all() as $key => $value) {
             $key = strtoupper(str_replace('-', '_', $key));
-            if (\in_array($key, array('CONTENT_TYPE', 'CONTENT_LENGTH'))) {
+            if (\in_array($key, ['CONTENT_TYPE', 'CONTENT_LENGTH'])) {
                 $_SERVER[$key] = implode(', ', $value);
             } else {
                 $_SERVER['HTTP_'.$key] = implode(', ', $value);
             }
         }
 
-        $request = array('g' => $_GET, 'p' => $_POST, 'c' => $_COOKIE);
+        $request = ['g' => $_GET, 'p' => $_POST, 'c' => $_COOKIE];
 
         $requestOrder = ini_get('request_order') ?: ini_get('variables_order');
         $requestOrder = preg_replace('#[^cgp]#', '', strtolower($requestOrder)) ?: 'gp';
 
-        $_REQUEST = array();
+        $_REQUEST = [];
         foreach (str_split($requestOrder) as $order) {
             $_REQUEST = array_merge($_REQUEST, $request[$order]);
         }
@@ -600,7 +600,7 @@ public static function setTrustedHosts(array $hostPatterns)
             return sprintf('{%s}i', $hostPattern);
         }, $hostPatterns);
         // we need to reset trusted hosts on trusted host patterns change
-        self::$trustedHosts = array();
+        self::$trustedHosts = [];
     }
 
     /**
@@ -774,10 +774,10 @@ public function getClientIps()
         $ip = $this->server->get('REMOTE_ADDR');
 
         if (!$this->isFromTrustedProxy()) {
-            return array($ip);
+            return [$ip];
         }
 
-        return $this->getTrustedValues(self::HEADER_X_FORWARDED_FOR, $ip) ?: array($ip);
+        return $this->getTrustedValues(self::HEADER_X_FORWARDED_FOR, $ip) ?: [$ip];
     }
 
     /**
@@ -1111,7 +1111,7 @@ public function getQueryString()
     public function isSecure()
     {
         if ($this->isFromTrustedProxy() && $proto = $this->getTrustedValues(self::HEADER_X_FORWARDED_PROTO)) {
-            return \in_array(strtolower($proto[0]), array('https', 'on', 'ssl', '1'), true);
+            return \in_array(strtolower($proto[0]), ['https', 'on', 'ssl', '1'], true);
         }
 
         $https = $this->server->get('HTTPS');
@@ -1270,7 +1270,7 @@ public static function getMimeTypes($format)
             static::initializeFormats();
         }
 
-        return isset(static::$formats[$format]) ? static::$formats[$format] : array();
+        return isset(static::$formats[$format]) ? static::$formats[$format] : [];
     }
 
     /**
@@ -1313,7 +1313,7 @@ public function setFormat($format, $mimeTypes)
             static::initializeFormats();
         }
 
-        static::$formats[$format] = \is_array($mimeTypes) ? $mimeTypes : array($mimeTypes);
+        static::$formats[$format] = \is_array($mimeTypes) ? $mimeTypes : [$mimeTypes];
     }
 
     /**
@@ -1430,7 +1430,7 @@ public function isMethodSafe(/* $andCacheable = true */)
             throw new \BadMethodCallException('Checking only for cacheable HTTP methods with Symfony\Component\HttpFoundation\Request::isMethodSafe() is not supported.');
         }
 
-        return \in_array($this->getMethod(), array('GET', 'HEAD', 'OPTIONS', 'TRACE'));
+        return \in_array($this->getMethod(), ['GET', 'HEAD', 'OPTIONS', 'TRACE']);
     }
 
     /**
@@ -1440,7 +1440,7 @@ public function isMethodSafe(/* $andCacheable = true */)
      */
     public function isMethodIdempotent()
     {
-        return \in_array($this->getMethod(), array('HEAD', 'GET', 'PUT', 'DELETE', 'TRACE', 'OPTIONS', 'PURGE'));
+        return \in_array($this->getMethod(), ['HEAD', 'GET', 'PUT', 'DELETE', 'TRACE', 'OPTIONS', 'PURGE']);
     }
 
     /**
@@ -1452,7 +1452,7 @@ public function isMethodIdempotent()
      */
     public function isMethodCacheable()
     {
-        return \in_array($this->getMethod(), array('GET', 'HEAD'));
+        return \in_array($this->getMethod(), ['GET', 'HEAD']);
     }
 
     /**
@@ -1563,7 +1563,7 @@ public function getPreferredLanguage(array $locales = null)
             return $locales[0];
         }
 
-        $extendedPreferredLanguages = array();
+        $extendedPreferredLanguages = [];
         foreach ($preferredLanguages as $language) {
             $extendedPreferredLanguages[] = $language;
             if (false !== $position = strpos($language, '_')) {
@@ -1591,7 +1591,7 @@ public function getLanguages()
         }
 
         $languages = AcceptHeader::fromString($this->headers->get('Accept-Language'))->all();
-        $this->languages = array();
+        $this->languages = [];
         foreach ($languages as $lang => $acceptHeaderItem) {
             if (false !== strpos($lang, '-')) {
                 $codes = explode('-', $lang);
@@ -1861,19 +1861,19 @@ protected function preparePathInfo()
      */
     protected static function initializeFormats()
     {
-        static::$formats = array(
-            'html' => array('text/html', 'application/xhtml+xml'),
-            'txt' => array('text/plain'),
-            'js' => array('application/javascript', 'application/x-javascript', 'text/javascript'),
-            'css' => array('text/css'),
-            'json' => array('application/json', 'application/x-json'),
-            'jsonld' => array('application/ld+json'),
-            'xml' => array('text/xml', 'application/xml', 'application/x-xml'),
-            'rdf' => array('application/rdf+xml'),
-            'atom' => array('application/atom+xml'),
-            'rss' => array('application/rss+xml'),
-            'form' => array('application/x-www-form-urlencoded'),
-        );
+        static::$formats = [
+            'html' => ['text/html', 'application/xhtml+xml'],
+            'txt' => ['text/plain'],
+            'js' => ['application/javascript', 'application/x-javascript', 'text/javascript'],
+            'css' => ['text/css'],
+            'json' => ['application/json', 'application/x-json'],
+            'jsonld' => ['application/ld+json'],
+            'xml' => ['text/xml', 'application/xml', 'application/x-xml'],
+            'rdf' => ['application/rdf+xml'],
+            'atom' => ['application/atom+xml'],
+            'rss' => ['application/rss+xml'],
+            'form' => ['application/x-www-form-urlencoded'],
+        ];
     }
 
     private function setPhpDefaultLocale(string $locale)
@@ -1910,7 +1910,7 @@ private function getUrlencodedPrefix(string $string, string $prefix)
         return false;
     }
 
-    private static function createRequestFromFactory(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    private static function createRequestFromFactory(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         if (self::$requestFactory) {
             $request = (self::$requestFactory)($query, $request, $attributes, $cookies, $files, $server, $content);
@@ -1940,8 +1940,8 @@ public function isFromTrustedProxy()
 
     private function getTrustedValues($type, $ip = null)
     {
-        $clientValues = array();
-        $forwardedValues = array();
+        $clientValues = [];
+        $forwardedValues = [];
 
         if ((self::$trustedHeaderSet & $type) && $this->headers->has(self::$trustedHeaders[$type])) {
             foreach (explode(',', $this->headers->get(self::$trustedHeaders[$type])) as $v) {
@@ -1952,7 +1952,7 @@ private function getTrustedValues($type, $ip = null)
         if ((self::$trustedHeaderSet & self::HEADER_FORWARDED) && $this->headers->has(self::$trustedHeaders[self::HEADER_FORWARDED])) {
             $forwarded = $this->headers->get(self::$trustedHeaders[self::HEADER_FORWARDED]);
             $parts = HeaderUtils::split($forwarded, ',;=');
-            $forwardedValues = array();
+            $forwardedValues = [];
             $param = self::$forwardedParams[$type];
             foreach ($parts as $subParts) {
                 if (null === $v = HeaderUtils::combine($subParts)[$param] ?? null) {
@@ -1982,7 +1982,7 @@ private function getTrustedValues($type, $ip = null)
         }
 
         if (!$this->isForwardedValid) {
-            return null !== $ip ? array('0.0.0.0', $ip) : array();
+            return null !== $ip ? ['0.0.0.0', $ip] : [];
         }
         $this->isForwardedValid = false;
 
@@ -1992,7 +1992,7 @@ private function getTrustedValues($type, $ip = null)
     private function normalizeAndFilterClientIps(array $clientIps, $ip)
     {
         if (!$clientIps) {
-            return array();
+            return [];
         }
         $clientIps[] = $ip; // Complete the IP chain with the IP the request actually came from
         $firstTrustedIp = null;
@@ -2028,6 +2028,6 @@ private function normalizeAndFilterClientIps(array $clientIps, $ip)
         }
 
         // Now the IP chain contains only untrusted proxies and the client IP
-        return $clientIps ? array_reverse($clientIps) : array($firstTrustedIp);
+        return $clientIps ? array_reverse($clientIps) : [$firstTrustedIp];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/RequestMatcher.php b/src/Symfony/Component/HttpFoundation/RequestMatcher.php
index 57fa48e40be3..0061a096bb89 100644
--- a/src/Symfony/Component/HttpFoundation/RequestMatcher.php
+++ b/src/Symfony/Component/HttpFoundation/RequestMatcher.php
@@ -31,22 +31,22 @@ class RequestMatcher implements RequestMatcherInterface
     /**
      * @var string[]
      */
-    private $methods = array();
+    private $methods = [];
 
     /**
      * @var string[]
      */
-    private $ips = array();
+    private $ips = [];
 
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @var string[]
      */
-    private $schemes = array();
+    private $schemes = [];
 
     /**
      * @param string|null          $path
@@ -56,7 +56,7 @@ class RequestMatcher implements RequestMatcherInterface
      * @param array                $attributes
      * @param string|string[]|null $schemes
      */
-    public function __construct(string $path = null, string $host = null, $methods = null, $ips = null, array $attributes = array(), $schemes = null)
+    public function __construct(string $path = null, string $host = null, $methods = null, $ips = null, array $attributes = [], $schemes = null)
     {
         $this->matchPath($path);
         $this->matchHost($host);
@@ -76,7 +76,7 @@ public function __construct(string $path = null, string $host = null, $methods =
      */
     public function matchScheme($scheme)
     {
-        $this->schemes = null !== $scheme ? array_map('strtolower', (array) $scheme) : array();
+        $this->schemes = null !== $scheme ? array_map('strtolower', (array) $scheme) : [];
     }
 
     /**
@@ -116,7 +116,7 @@ public function matchIp($ip)
      */
     public function matchIps($ips)
     {
-        $this->ips = null !== $ips ? (array) $ips : array();
+        $this->ips = null !== $ips ? (array) $ips : [];
     }
 
     /**
@@ -126,7 +126,7 @@ public function matchIps($ips)
      */
     public function matchMethod($method)
     {
-        $this->methods = null !== $method ? array_map('strtoupper', (array) $method) : array();
+        $this->methods = null !== $method ? array_map('strtoupper', (array) $method) : [];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/Response.php b/src/Symfony/Component/HttpFoundation/Response.php
index 3d11798e857f..5f0a1cc245f2 100644
--- a/src/Symfony/Component/HttpFoundation/Response.php
+++ b/src/Symfony/Component/HttpFoundation/Response.php
@@ -128,7 +128,7 @@ class Response
      *
      * @var array
      */
-    public static $statusTexts = array(
+    public static $statusTexts = [
         100 => 'Continue',
         101 => 'Switching Protocols',
         102 => 'Processing',            // RFC2518
@@ -191,12 +191,12 @@ class Response
         508 => 'Loop Detected',                                               // RFC5842
         510 => 'Not Extended',                                                // RFC2774
         511 => 'Network Authentication Required',                             // RFC6585
-    );
+    ];
 
     /**
      * @throws \InvalidArgumentException When the HTTP status code is not valid
      */
-    public function __construct($content = '', int $status = 200, array $headers = array())
+    public function __construct($content = '', int $status = 200, array $headers = [])
     {
         $this->headers = new ResponseHeaderBag($headers);
         $this->setContent($content);
@@ -218,7 +218,7 @@ public function __construct($content = '', int $status = 200, array $headers = a
      *
      * @return static
      */
-    public static function create($content = '', $status = 200, $headers = array())
+    public static function create($content = '', $status = 200, $headers = [])
     {
         return new static($content, $status, $headers);
     }
@@ -371,7 +371,7 @@ public function send()
 
         if (\function_exists('fastcgi_finish_request')) {
             fastcgi_finish_request();
-        } elseif (!\in_array(\PHP_SAPI, array('cli', 'phpdbg'), true)) {
+        } elseif (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true)) {
             static::closeOutputBuffers(0, true);
         }
 
@@ -391,7 +391,7 @@ public function send()
      */
     public function setContent($content)
     {
-        if (null !== $content && !\is_string($content) && !is_numeric($content) && !\is_callable(array($content, '__toString'))) {
+        if (null !== $content && !\is_string($content) && !is_numeric($content) && !\is_callable([$content, '__toString'])) {
             throw new \UnexpectedValueException(sprintf('The Response content must be a string or object implementing __toString(), "%s" given.', \gettype($content)));
         }
 
@@ -523,7 +523,7 @@ public function getCharset(): ?string
      */
     public function isCacheable(): bool
     {
-        if (!\in_array($this->statusCode, array(200, 203, 300, 301, 302, 404, 410))) {
+        if (!\in_array($this->statusCode, [200, 203, 300, 301, 302, 404, 410])) {
             return false;
         }
 
@@ -933,7 +933,7 @@ public function setEtag(string $etag = null, bool $weak = false)
      */
     public function setCache(array $options)
     {
-        if ($diff = array_diff(array_keys($options), array('etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public', 'immutable'))) {
+        if ($diff = array_diff(array_keys($options), ['etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public', 'immutable'])) {
             throw new \InvalidArgumentException(sprintf('Response does not support the following options: "%s".', implode('", "', $diff)));
         }
 
@@ -994,7 +994,7 @@ public function setNotModified()
         $this->setContent(null);
 
         // remove headers that MUST NOT be included with 304 Not Modified responses
-        foreach (array('Allow', 'Content-Encoding', 'Content-Language', 'Content-Length', 'Content-MD5', 'Content-Type', 'Last-Modified') as $header) {
+        foreach (['Allow', 'Content-Encoding', 'Content-Language', 'Content-Length', 'Content-MD5', 'Content-Type', 'Last-Modified'] as $header) {
             $this->headers->remove($header);
         }
 
@@ -1019,10 +1019,10 @@ public function hasVary(): bool
     public function getVary(): array
     {
         if (!$vary = $this->headers->get('Vary', null, false)) {
-            return array();
+            return [];
         }
 
-        $ret = array();
+        $ret = [];
         foreach ($vary as $item) {
             $ret = array_merge($ret, preg_split('/[\s,]+/', $item));
         }
@@ -1182,7 +1182,7 @@ public function isNotFound(): bool
      */
     public function isRedirect(string $location = null): bool
     {
-        return \in_array($this->statusCode, array(201, 301, 302, 303, 307, 308)) && (null === $location ?: $location == $this->headers->get('Location'));
+        return \in_array($this->statusCode, [201, 301, 302, 303, 307, 308]) && (null === $location ?: $location == $this->headers->get('Location'));
     }
 
     /**
@@ -1192,7 +1192,7 @@ public function isRedirect(string $location = null): bool
      */
     public function isEmpty(): bool
     {
-        return \in_array($this->statusCode, array(204, 304));
+        return \in_array($this->statusCode, [204, 304]);
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php b/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
index 97f9ecea1fd3..49b5b0ab11c1 100644
--- a/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
+++ b/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
@@ -290,7 +290,7 @@ public function makeDisposition($disposition, $filename, $filenameFallback = '')
             throw new \InvalidArgumentException('The filename and the fallback cannot contain the "/" and "\\" characters.');
         }
 
-        $params = array('filename' => $filenameFallback);
+        $params = ['filename' => $filenameFallback];
         if ($filename !== $filenameFallback) {
             $params['filename*'] = "utf-8''".rawurlencode($filename);
         }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
index 853b0bc72345..904dc1b523d2 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
@@ -74,12 +74,12 @@ public function __construct(\MongoDB\Client $mongo, array $options)
 
         $this->mongo = $mongo;
 
-        $this->options = array_merge(array(
+        $this->options = array_merge([
             'id_field' => '_id',
             'data_field' => 'data',
             'time_field' => 'time',
             'expiry_field' => 'expires_at',
-        ), $options);
+        ], $options);
     }
 
     /**
@@ -95,9 +95,9 @@ public function close()
      */
     protected function doDestroy($sessionId)
     {
-        $this->getCollection()->deleteOne(array(
+        $this->getCollection()->deleteOne([
             $this->options['id_field'] => $sessionId,
-        ));
+        ]);
 
         return true;
     }
@@ -107,9 +107,9 @@ protected function doDestroy($sessionId)
      */
     public function gc($maxlifetime)
     {
-        $this->getCollection()->deleteMany(array(
-            $this->options['expiry_field'] => array('$lt' => new \MongoDB\BSON\UTCDateTime()),
-        ));
+        $this->getCollection()->deleteMany([
+            $this->options['expiry_field'] => ['$lt' => new \MongoDB\BSON\UTCDateTime()],
+        ]);
 
         return true;
     }
@@ -121,16 +121,16 @@ protected function doWrite($sessionId, $data)
     {
         $expiry = new \MongoDB\BSON\UTCDateTime((time() + (int) ini_get('session.gc_maxlifetime')) * 1000);
 
-        $fields = array(
+        $fields = [
             $this->options['time_field'] => new \MongoDB\BSON\UTCDateTime(),
             $this->options['expiry_field'] => $expiry,
             $this->options['data_field'] => new \MongoDB\BSON\Binary($data, \MongoDB\BSON\Binary::TYPE_OLD_BINARY),
-        );
+        ];
 
         $this->getCollection()->updateOne(
-            array($this->options['id_field'] => $sessionId),
-            array('$set' => $fields),
-            array('upsert' => true)
+            [$this->options['id_field'] => $sessionId],
+            ['$set' => $fields],
+            ['upsert' => true]
         );
 
         return true;
@@ -144,11 +144,11 @@ public function updateTimestamp($sessionId, $data)
         $expiry = new \MongoDB\BSON\UTCDateTime((time() + (int) ini_get('session.gc_maxlifetime')) * 1000);
 
         $this->getCollection()->updateOne(
-            array($this->options['id_field'] => $sessionId),
-            array('$set' => array(
+            [$this->options['id_field'] => $sessionId],
+            ['$set' => [
                 $this->options['time_field'] => new \MongoDB\BSON\UTCDateTime(),
                 $this->options['expiry_field'] => $expiry,
-            ))
+            ]]
         );
 
         return true;
@@ -159,10 +159,10 @@ public function updateTimestamp($sessionId, $data)
      */
     protected function doRead($sessionId)
     {
-        $dbData = $this->getCollection()->findOne(array(
+        $dbData = $this->getCollection()->findOne([
             $this->options['id_field'] => $sessionId,
-            $this->options['expiry_field'] => array('$gte' => new \MongoDB\BSON\UTCDateTime()),
-        ));
+            $this->options['expiry_field'] => ['$gte' => new \MongoDB\BSON\UTCDateTime()],
+        ]);
 
         if (null === $dbData) {
             return '';
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php
index 36adf2424d61..3a8c68cbdcbc 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/RedisSessionHandler.php
@@ -38,7 +38,7 @@ class RedisSessionHandler extends AbstractSessionHandler
      *
      * @throws \InvalidArgumentException When unsupported client or options are passed
      */
-    public function __construct($redis, array $options = array())
+    public function __construct($redis, array $options = [])
     {
         if (
             !$redis instanceof \Redis &&
@@ -50,7 +50,7 @@ public function __construct($redis, array $options = array())
             throw new \InvalidArgumentException(sprintf('%s() expects parameter 1 to be Redis, RedisArray, RedisCluster or Predis\Client, %s given', __METHOD__, \is_object($redis) ? \get_class($redis) : \gettype($redis)));
         }
 
-        if ($diff = array_diff(array_keys($options), array('prefix'))) {
+        if ($diff = array_diff(array_keys($options), ['prefix'])) {
             throw new \InvalidArgumentException(sprintf('The following options are not supported "%s"', implode(', ', $diff)));
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
index 618bfd045e99..38572008dbaa 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
@@ -26,7 +26,7 @@ class NativeSessionStorage implements SessionStorageInterface
     /**
      * @var SessionBagInterface[]
      */
-    protected $bags = array();
+    protected $bags = [];
 
     /**
      * @var bool
@@ -94,15 +94,15 @@ class NativeSessionStorage implements SessionStorageInterface
      * @param \SessionHandlerInterface|null $handler
      * @param MetadataBag                   $metaBag MetadataBag
      */
-    public function __construct(array $options = array(), $handler = null, MetadataBag $metaBag = null)
+    public function __construct(array $options = [], $handler = null, MetadataBag $metaBag = null)
     {
-        $options += array(
+        $options += [
             'cache_limiter' => '',
             'cache_expire' => 0,
             'use_cookies' => 1,
             'lazy_write' => 1,
             'use_strict_mode' => 1,
-        );
+        ];
 
         session_register_shutdown();
 
@@ -223,7 +223,7 @@ public function save()
                 unset($_SESSION[$key]);
             }
         }
-        if (array($key = $this->metadataBag->getStorageKey()) === array_keys($_SESSION)) {
+        if ([$key = $this->metadataBag->getStorageKey()] === array_keys($_SESSION)) {
             unset($_SESSION[$key]);
         }
 
@@ -259,7 +259,7 @@ public function clear()
         }
 
         // clear out the session
-        $_SESSION = array();
+        $_SESSION = [];
 
         // reconnect the bags to the session
         $this->loadSession();
@@ -338,7 +338,7 @@ public function setOptions(array $options)
             return;
         }
 
-        $validOptions = array_flip(array(
+        $validOptions = array_flip([
             'cache_expire', 'cache_limiter', 'cookie_domain', 'cookie_httponly',
             'cookie_lifetime', 'cookie_path', 'cookie_secure',
             'gc_divisor', 'gc_maxlifetime', 'gc_probability',
@@ -348,7 +348,7 @@ public function setOptions(array $options)
             'upload_progress.cleanup', 'upload_progress.prefix', 'upload_progress.name',
             'upload_progress.freq', 'upload_progress.min_freq', 'url_rewriter.tags',
             'sid_length', 'sid_bits_per_character', 'trans_sid_hosts', 'trans_sid_tags',
-        ));
+        ]);
 
         foreach ($options as $key => $value) {
             if (isset($validOptions[$key])) {
@@ -418,11 +418,11 @@ protected function loadSession(array &$session = null)
             $session = &$_SESSION;
         }
 
-        $bags = array_merge($this->bags, array($this->metadataBag));
+        $bags = array_merge($this->bags, [$this->metadataBag]);
 
         foreach ($bags as $bag) {
             $key = $bag->getStorageKey();
-            $session[$key] = isset($session[$key]) ? $session[$key] : array();
+            $session[$key] = isset($session[$key]) ? $session[$key] : [];
             $bag->initialize($session[$key]);
         }
 
diff --git a/src/Symfony/Component/HttpFoundation/StreamedResponse.php b/src/Symfony/Component/HttpFoundation/StreamedResponse.php
index d3bcbb79d301..8310ea72d6c1 100644
--- a/src/Symfony/Component/HttpFoundation/StreamedResponse.php
+++ b/src/Symfony/Component/HttpFoundation/StreamedResponse.php
@@ -35,7 +35,7 @@ class StreamedResponse extends Response
      * @param int           $status   The response status code
      * @param array         $headers  An array of response headers
      */
-    public function __construct(callable $callback = null, int $status = 200, array $headers = array())
+    public function __construct(callable $callback = null, int $status = 200, array $headers = [])
     {
         parent::__construct(null, $status, $headers);
 
@@ -55,7 +55,7 @@ public function __construct(callable $callback = null, int $status = 200, array
      *
      * @return static
      */
-    public static function create($callback = null, $status = 200, $headers = array())
+    public static function create($callback = null, $status = 200, $headers = [])
     {
         return new static($callback, $status, $headers);
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderItemTest.php b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderItemTest.php
index 1a660247c8fb..516bd5551a0f 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderItemTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderItemTest.php
@@ -28,24 +28,24 @@ public function testFromString($string, $value, array $attributes)
 
     public function provideFromStringData()
     {
-        return array(
-            array(
+        return [
+            [
                 'text/html',
-                'text/html', array(),
-            ),
-            array(
+                'text/html', [],
+            ],
+            [
                 '"this;should,not=matter"',
-                'this;should,not=matter', array(),
-            ),
-            array(
+                'this;should,not=matter', [],
+            ],
+            [
                 "text/plain; charset=utf-8;param=\"this;should,not=matter\";\tfootnotes=true",
-                'text/plain', array('charset' => 'utf-8', 'param' => 'this;should,not=matter', 'footnotes' => 'true'),
-            ),
-            array(
+                'text/plain', ['charset' => 'utf-8', 'param' => 'this;should,not=matter', 'footnotes' => 'true'],
+            ],
+            [
                 '"this;should,not=matter";charset=utf-8',
-                'this;should,not=matter', array('charset' => 'utf-8'),
-            ),
-        );
+                'this;should,not=matter', ['charset' => 'utf-8'],
+            ],
+        ];
     }
 
     /**
@@ -59,21 +59,21 @@ public function testToString($value, array $attributes, $string)
 
     public function provideToStringData()
     {
-        return array(
-            array(
-                'text/html', array(),
+        return [
+            [
+                'text/html', [],
                 'text/html',
-            ),
-            array(
-                'text/plain', array('charset' => 'utf-8', 'param' => 'this;should,not=matter', 'footnotes' => 'true'),
+            ],
+            [
+                'text/plain', ['charset' => 'utf-8', 'param' => 'this;should,not=matter', 'footnotes' => 'true'],
                 'text/plain; charset=utf-8; param="this;should,not=matter"; footnotes=true',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testValue()
     {
-        $item = new AcceptHeaderItem('value', array());
+        $item = new AcceptHeaderItem('value', []);
         $this->assertEquals('value', $item->getValue());
 
         $item->setValue('new value');
@@ -85,7 +85,7 @@ public function testValue()
 
     public function testQuality()
     {
-        $item = new AcceptHeaderItem('value', array());
+        $item = new AcceptHeaderItem('value', []);
         $this->assertEquals(1.0, $item->getQuality());
 
         $item->setQuality(0.5);
@@ -98,14 +98,14 @@ public function testQuality()
 
     public function testAttribute()
     {
-        $item = new AcceptHeaderItem('value', array());
-        $this->assertEquals(array(), $item->getAttributes());
+        $item = new AcceptHeaderItem('value', []);
+        $this->assertEquals([], $item->getAttributes());
         $this->assertFalse($item->hasAttribute('test'));
         $this->assertNull($item->getAttribute('test'));
         $this->assertEquals('default', $item->getAttribute('test', 'default'));
 
         $item->setAttribute('test', 'value');
-        $this->assertEquals(array('test' => 'value'), $item->getAttributes());
+        $this->assertEquals(['test' => 'value'], $item->getAttributes());
         $this->assertTrue($item->hasAttribute('test'));
         $this->assertEquals('value', $item->getAttribute('test'));
         $this->assertEquals('value', $item->getAttribute('test', 'default'));
diff --git a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
index 79dea692a183..1987e97fb8bc 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/AcceptHeaderTest.php
@@ -112,19 +112,19 @@ public function testDefaultValue($acceptHeader, $value, $expectedQuality)
 
     public function provideDefaultValueData()
     {
-        yield array('text/plain;q=0.5, text/html, text/x-dvi;q=0.8, *;q=0.3', 'text/xml', 0.3);
-        yield array('text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/xml', 0.3);
-        yield array('text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/html', 1.0);
-        yield array('text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/plain', 0.5);
-        yield array('text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', '*', 0.3);
-        yield array('text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*', '*', 1.0);
-        yield array('text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*', 'text/xml', 1.0);
-        yield array('text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*', 'text/*', 1.0);
-        yield array('text/plain;q=0.5, text/html, text/*;q=0.8, */*', 'text/*', 0.8);
-        yield array('text/plain;q=0.5, text/html, text/*;q=0.8, */*', 'text/html', 1.0);
-        yield array('text/plain;q=0.5, text/html, text/*;q=0.8, */*', 'text/x-dvi', 0.8);
-        yield array('*;q=0.3, ISO-8859-1;q=0.7, utf-8;q=0.7', '*', 0.3);
-        yield array('*;q=0.3, ISO-8859-1;q=0.7, utf-8;q=0.7', 'utf-8', 0.7);
-        yield array('*;q=0.3, ISO-8859-1;q=0.7, utf-8;q=0.7', 'SHIFT_JIS', 0.3);
+        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, *;q=0.3', 'text/xml', 0.3];
+        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/xml', 0.3];
+        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/html', 1.0];
+        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', 'text/plain', 0.5];
+        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*;q=0.3', '*', 0.3];
+        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*', '*', 1.0];
+        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*', 'text/xml', 1.0];
+        yield ['text/plain;q=0.5, text/html, text/x-dvi;q=0.8, */*', 'text/*', 1.0];
+        yield ['text/plain;q=0.5, text/html, text/*;q=0.8, */*', 'text/*', 0.8];
+        yield ['text/plain;q=0.5, text/html, text/*;q=0.8, */*', 'text/html', 1.0];
+        yield ['text/plain;q=0.5, text/html, text/*;q=0.8, */*', 'text/x-dvi', 0.8];
+        yield ['*;q=0.3, ISO-8859-1;q=0.7, utf-8;q=0.7', '*', 0.3];
+        yield ['*;q=0.3, ISO-8859-1;q=0.7, utf-8;q=0.7', 'utf-8', 0.7];
+        yield ['*;q=0.3, ISO-8859-1;q=0.7, utf-8;q=0.7', 'SHIFT_JIS', 0.3];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/BinaryFileResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/BinaryFileResponseTest.php
index 6bf04e16b717..9f3beb08d1af 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/BinaryFileResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/BinaryFileResponseTest.php
@@ -22,14 +22,14 @@ class BinaryFileResponseTest extends ResponseTestCase
     public function testConstruction()
     {
         $file = __DIR__.'/../README.md';
-        $response = new BinaryFileResponse($file, 404, array('X-Header' => 'Foo'), true, null, true, true);
+        $response = new BinaryFileResponse($file, 404, ['X-Header' => 'Foo'], true, null, true, true);
         $this->assertEquals(404, $response->getStatusCode());
         $this->assertEquals('Foo', $response->headers->get('X-Header'));
         $this->assertTrue($response->headers->has('ETag'));
         $this->assertTrue($response->headers->has('Last-Modified'));
         $this->assertFalse($response->headers->has('Content-Disposition'));
 
-        $response = BinaryFileResponse::create($file, 404, array(), true, ResponseHeaderBag::DISPOSITION_INLINE);
+        $response = BinaryFileResponse::create($file, 404, [], true, ResponseHeaderBag::DISPOSITION_INLINE);
         $this->assertEquals(404, $response->getStatusCode());
         $this->assertFalse($response->headers->has('ETag'));
         $this->assertEquals('inline; filename=README.md', $response->headers->get('Content-Disposition'));
@@ -39,7 +39,7 @@ public function testConstructWithNonAsciiFilename()
     {
         touch(sys_get_temp_dir().'/fööö.html');
 
-        $response = new BinaryFileResponse(sys_get_temp_dir().'/fööö.html', 200, array(), true, 'attachment');
+        $response = new BinaryFileResponse(sys_get_temp_dir().'/fööö.html', 200, [], true, 'attachment');
 
         @unlink(sys_get_temp_dir().'/fööö.html');
 
@@ -85,7 +85,7 @@ public function testSetContentDispositionGeneratesSafeFallbackFilenameForWrongly
      */
     public function testRequests($requestRange, $offset, $length, $responseRange)
     {
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'))->setAutoEtag();
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream'])->setAutoEtag();
 
         // do a request to get the ETag
         $request = Request::create('/');
@@ -117,7 +117,7 @@ public function testRequests($requestRange, $offset, $length, $responseRange)
      */
     public function testRequestsWithoutEtag($requestRange, $offset, $length, $responseRange)
     {
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'));
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream']);
 
         // do a request to get the LastModified
         $request = Request::create('/');
@@ -145,19 +145,19 @@ public function testRequestsWithoutEtag($requestRange, $offset, $length, $respon
 
     public function provideRanges()
     {
-        return array(
-            array('bytes=1-4', 1, 4, 'bytes 1-4/35'),
-            array('bytes=-5', 30, 5, 'bytes 30-34/35'),
-            array('bytes=30-', 30, 5, 'bytes 30-34/35'),
-            array('bytes=30-30', 30, 1, 'bytes 30-30/35'),
-            array('bytes=30-34', 30, 5, 'bytes 30-34/35'),
-        );
+        return [
+            ['bytes=1-4', 1, 4, 'bytes 1-4/35'],
+            ['bytes=-5', 30, 5, 'bytes 30-34/35'],
+            ['bytes=30-', 30, 5, 'bytes 30-34/35'],
+            ['bytes=30-30', 30, 1, 'bytes 30-30/35'],
+            ['bytes=30-34', 30, 5, 'b
10000
ytes 30-34/35'],
+        ];
     }
 
     public function testRangeRequestsWithoutLastModifiedDate()
     {
         // prevent auto last modified
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'), true, null, false, false);
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream'], true, null, false, false);
 
         // prepare a request for a range of the testing file
         $request = Request::create('/');
@@ -178,7 +178,7 @@ public function testRangeRequestsWithoutLastModifiedDate()
      */
     public function testFullFileRequests($requestRange)
     {
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'))->setAutoEtag();
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream'])->setAutoEtag();
 
         // prepare a request for a range of the testing file
         $request = Request::create('/');
@@ -198,14 +198,14 @@ public function testFullFileRequests($requestRange)
 
     public function provideFullFileRanges()
     {
-        return array(
-            array('bytes=0-'),
-            array('bytes=0-34'),
-            array('bytes=-35'),
+        return [
+            ['bytes=0-'],
+            ['bytes=0-34'],
+            ['bytes=-35'],
             // Syntactical invalid range-request should also return the full resource
-            array('bytes=20-10'),
-            array('bytes=50-40'),
-        );
+            ['bytes=20-10'],
+            ['bytes=50-40'],
+        ];
     }
 
     public function testUnpreparedResponseSendsFullFile()
@@ -226,7 +226,7 @@ public function testUnpreparedResponseSendsFullFile()
      */
     public function testInvalidRequests($requestRange)
     {
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'))->setAutoEtag();
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream'])->setAutoEtag();
 
         // prepare a request for a range of the testing file
         $request = Request::create('/');
@@ -242,10 +242,10 @@ public function testInvalidRequests($requestRange)
 
     public function provideInvalidRanges()
     {
-        return array(
-            array('bytes=-40'),
-            array('bytes=30-40'),
-        );
+        return [
+            ['bytes=-40'],
+            ['bytes=30-40'],
+        ];
     }
 
     /**
@@ -257,7 +257,7 @@ public function testXSendfile($file)
         $request->headers->set('X-Sendfile-Type', 'X-Sendfile');
 
         BinaryFileResponse::trustXSendfileTypeHeader();
-        $response = BinaryFileResponse::create($file, 200, array('Content-Type' => 'application/octet-stream'));
+        $response = BinaryFileResponse::create($file, 200, ['Content-Type' => 'application/octet-stream']);
         $response->prepare($request);
 
         $this->expectOutputString('');
@@ -268,10 +268,10 @@ public function testXSendfile($file)
 
     public function provideXSendfileFiles()
     {
-        return array(
-            array(__DIR__.'/../README.md'),
-            array('file://'.__DIR__.'/../README.md'),
-        );
+        return [
+            [__DIR__.'/../README.md'],
+            ['file://'.__DIR__.'/../README.md'],
+        ];
     }
 
     /**
@@ -286,7 +286,7 @@ public function testXAccelMapping($realpath, $mapping, $virtual)
         $file = new FakeFile($realpath, __DIR__.'/File/Fixtures/test');
 
         BinaryFileResponse::trustXSendfileTypeHeader();
-        $response = new BinaryFileResponse($file, 200, array('Content-Type' => 'application/octet-stream'));
+        $response = new BinaryFileResponse($file, 200, ['Content-Type' => 'application/octet-stream']);
         $reflection = new \ReflectionObject($response);
         $property = $reflection->getProperty('file');
         $property->setAccessible(true);
@@ -305,7 +305,7 @@ public function testDeleteFileAfterSend()
         $realPath = realpath($path);
         $this->assertFileExists($realPath);
 
-        $response = new BinaryFileResponse($realPath, 200, array('Content-Type' => 'application/octet-stream'));
+        $response = new BinaryFileResponse($realPath, 200, ['Content-Type' => 'application/octet-stream']);
         $response->deleteFileAfterSend(true);
 
         $response->prepare($request);
@@ -317,7 +317,7 @@ public function testDeleteFileAfterSend()
     public function testAcceptRangeOnUnsafeMethods()
     {
         $request = Request::create('/', 'POST');
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'));
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream']);
         $response->prepare($request);
 
         $this->assertEquals('none', $response->headers->get('Accept-Ranges'));
@@ -326,7 +326,7 @@ public function testAcceptRangeOnUnsafeMethods()
     public function testAcceptRangeNotOverriden()
     {
         $request = Request::create('/', 'POST');
-        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, array('Content-Type' => 'application/octet-stream'));
+        $response = BinaryFileResponse::create(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream']);
         $response->headers->set('Accept-Ranges', 'foo');
         $response->prepare($request);
 
@@ -335,17 +335,17 @@ public function testAcceptRangeNotOverriden()
 
     public function getSampleXAccelMappings()
     {
-        return array(
-            array('/var/www/var/www/files/foo.txt', '/var/www/=/files/', '/files/var/www/files/foo.txt'),
-            array('/home/Foo/bar.txt', '/var/www/=/files/,/home/Foo/=/baz/', '/baz/bar.txt'),
-            array('/home/Foo/bar.txt', '"/var/www/"="/files/", "/home/Foo/"="/baz/"', '/baz/bar.txt'),
-        );
+        return [
+            ['/var/www/var/www/files/foo.txt', '/var/www/=/files/', '/files/var/www/files/foo.txt'],
+            ['/home/Foo/bar.txt', '/var/www/=/files/,/home/Foo/=/baz/', '/baz/bar.txt'],
+            ['/home/Foo/bar.txt', '"/var/www/"="/files/", "/home/Foo/"="/baz/"', '/baz/bar.txt'],
+        ];
     }
 
     public function testStream()
     {
         $request = Request::create('/');
-        $response = new BinaryFileResponse(new Stream(__DIR__.'/../README.md'), 200, array('Content-Type' => 'text/plain'));
+        $response = new BinaryFileResponse(new Stream(__DIR__.'/../README.md'), 200, ['Content-Type' => 'text/plain']);
         $response->prepare($request);
 
         $this->assertNull($response->headers->get('Content-Length'));
@@ -353,7 +353,7 @@ public function testStream()
 
     protected function provideResponse()
     {
-        return new BinaryFileResponse(__DIR__.'/../README.md', 200, array('Content-Type' => 'application/octet-stream'));
+        return new BinaryFileResponse(__DIR__.'/../README.md', 200, ['Content-Type' => 'application/octet-stream']);
     }
 
     public static function tearDownAfterClass()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/File/UploadedFileTest.php b/src/Symfony/Component/HttpFoundation/Tests/File/UploadedFileTest.php
index 5145a929c7b6..3952a69c69eb 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/File/UploadedFileTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/File/UploadedFileTest.php
@@ -147,13 +147,13 @@ public function testMoveLocalFileIsNotAllowed()
 
     public function failedUploadedFile()
     {
-        foreach (array(UPLOAD_ERR_INI_SIZE, UPLOAD_ERR_FORM_SIZE, UPLOAD_ERR_PARTIAL, UPLOAD_ERR_NO_FILE, UPLOAD_ERR_CANT_WRITE, UPLOAD_ERR_NO_TMP_DIR, UPLOAD_ERR_EXTENSION, -1) as $error) {
-            yield array(new UploadedFile(
+        foreach ([UPLOAD_ERR_INI_SIZE, UPLOAD_ERR_FORM_SIZE, UPLOAD_ERR_PARTIAL, UPLOAD_ERR_NO_FILE, UPLOAD_ERR_CANT_WRITE, UPLOAD_ERR_NO_TMP_DIR, UPLOAD_ERR_EXTENSION, -1] as $error) {
+            yield [new UploadedFile(
                 __DIR__.'/Fixtures/test.gif',
                 'original.gif',
                 'image/gif',
                 $error
-            ));
+            )];
         }
     }
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/FileBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/FileBagTest.php
index 06136e2097cd..5eaf64f89f77 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/FileBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/FileBagTest.php
@@ -28,7 +28,7 @@ class FileBagTest extends TestCase
      */
     public function testFileMustBeAnArrayOrUploadedFile()
     {
-        new FileBag(array('file' => 'foo'));
+        new FileBag(['file' => 'foo']);
     }
 
     public function testShouldConvertsUploadedFiles()
@@ -36,54 +36,54 @@ public function testShouldConvertsUploadedFiles()
         $tmpFile = $this->createTempFile();
         $file = new UploadedFile($tmpFile, basename($tmpFile), 'text/plain');
 
-        $bag = new FileBag(array('file' => array(
+        $bag = new FileBag(['file' => [
             'name' => basename($tmpFile),
             'type' => 'text/plain',
             'tmp_name' => $tmpFile,
             'error' => 0,
             'size' => null,
-        )));
+        ]]);
 
         $this->assertEquals($file, $bag->get('file'));
     }
 
     public function testShouldSetEmptyUploadedFilesToNull()
     {
-        $bag = new FileBag(array('file' => array(
+        $bag = new FileBag(['file' => [
             'name' => '',
             'type' => '',
             'tmp_name' => '',
             'error' => UPLOAD_ERR_NO_FILE,
             'size' => 0,
-        )));
+        ]]);
 
         $this->assertNull($bag->get('file'));
     }
 
     public function testShouldRemoveEmptyUploadedFilesForMultiUpload()
     {
-        $bag = new FileBag(array('files' => array(
-            'name' => array(''),
-            'type' => array(''),
-            'tmp_name' => array(''),
-            'error' => array(UPLOAD_ERR_NO_FILE),
-            'size' => array(0),
-        )));
-
-        $this->assertSame(array(), $bag->get('files'));
+        $bag = new FileBag(['files' => [
+            'name' => [''],
+            'type' => [''],
+            'tmp_name' => [''],
+            'error' => [UPLOAD_ERR_NO_FILE],
+            'size' => [0],
+        ]]);
+
+        $this->assertSame([], $bag->get('files'));
     }
 
     public function testShouldNotRemoveEmptyUploadedFilesForAssociativeArray()
     {
-        $bag = new FileBag(array('files' => array(
-            'name' => array('file1' => ''),
-            'type' => array('file1' => ''),
-            'tmp_name' => array('file1' => ''),
-            'error' => array('file1' => UPLOAD_ERR_NO_FILE),
-            'size' => array('file1' => 0),
-        )));
-
-        $this->assertSame(array('file1' => null), $bag->get('files'));
+        $bag = new FileBag(['files' => [
+            'name' => ['file1' => ''],
+            'type' => ['file1' => ''],
+            'tmp_name' => ['file1' => ''],
+            'error' => ['file1' => UPLOAD_ERR_NO_FILE],
+            'size' => ['file1' => 0],
+        ]]);
+
+        $this->assertSame(['file1' => null], $bag->get('files'));
     }
 
     public function testShouldConvertUploadedFilesWithPhpBug()
@@ -91,25 +91,25 @@ public function testShouldConvertUploadedFilesWithPhpBug()
         $tmpFile = $this->createTempFile();
         $file = new UploadedFile($tmpFile, basename($tmpFile), 'text/plain');
 
-        $bag = new FileBag(array(
-            'child' => array(
-                'name' => array(
+        $bag = new FileBag([
+            'child' => [
+                'name' => [
                     'file' => basename($tmpFile),
-                ),
-                'type' => array(
+                ],
+                'type' => [
                     'file' => 'text/plain',
-                ),
-                'tmp_name' => array(
+                ],
+                'tmp_name' => [
                     'file' => $tmpFile,
-                ),
-                'error' => array(
+                ],
+                'error' => [
                     'file' => 0,
-                ),
-                'size' => array(
+                ],
+                'size' => [
                     'file' => null,
-                ),
-            ),
-        ));
+                ],
+            ],
+        ]);
 
         $files = $bag->all();
         $this->assertEquals($file, $files['child']['file']);
@@ -120,25 +120,25 @@ public function testShouldConvertNestedUploadedFilesWithPhpBug()
         $tmpFile = $this->createTempFile();
         $file = new UploadedFile($tmpFile, basename($tmpFile), 'text/plain');
 
-        $bag = new FileBag(array(
-            'child' => array(
-                'name' => array(
-                    'sub' => array('file' => basename($tmpFile)),
-                ),
-                'type' => array(
-                    'sub' => array('file' => 'text/plain'),
-                ),
-                'tmp_name' => array(
-                    'sub' => array('file' => $tmpFile),
-                ),
-                'error' => array(
-                    'sub' => array('file' => 0),
-                ),
-                'size' => array(
-                    'sub' => array('file' => null),
-                ),
-            ),
-        ));
+        $bag = new FileBag([
+            'child' => [
+                'name' => [
+                    'sub' => ['file' => basename($tmpFile)],
+                ],
+                'type' => [
+                    'sub' => ['file' => 'text/plain'],
+                ],
+                'tmp_name' => [
+                    'sub' => ['file' => $tmpFile],
+                ],
+                'error' => [
+                    'sub' => ['file' => 0],
+                ],
+                'size' => [
+                    'sub' => ['file' => null],
+                ],
+            ],
+        ]);
 
         $files = $bag->all();
         $this->assertEquals($file, $files['child']['sub']['file']);
@@ -148,7 +148,7 @@ public function testShouldNotConvertNestedUploadedFiles()
     {
         $tmpFile = $this->createTempFile();
         $file = new UploadedFile($tmpFile, basename($tmpFile), 'text/plain');
-        $bag = new FileBag(array('image' => array('file' => $file)));
+        $bag = new FileBag(['image' => ['file' => $file]]);
 
         $files = $bag->all();
         $this->assertEquals($file, $files['image']['file']);
diff --git a/src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php b/src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php
index 2f5fdc21c3b2..572b4f41005e 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php
@@ -18,48 +18,48 @@ class HeaderUtilsTest extends TestCase
 {
     public function testSplit()
     {
-        $this->assertSame(array('foo=123', 'bar'), HeaderUtils::split('foo=123,bar', ','));
-        $this->assertSame(array('foo=123', 'bar'), HeaderUtils::split('foo=123, bar', ','));
-        $this->assertSame(array(array('foo=123', 'bar')), HeaderUtils::split('foo=123; bar', ',;'));
-        $this->assertSame(array(array('foo=123'), array('bar')), HeaderUtils::split('foo=123, bar', ',;'));
-        $this->assertSame(array('foo', '123, bar'), HeaderUtils::split('foo=123, bar', '='));
-        $this->assertSame(array('foo', '123, bar'), HeaderUtils::split(' foo = 123, bar ', '='));
-        $this->assertSame(array(array('foo', '123'), array('bar')), HeaderUtils::split('foo=123, bar', ',='));
-        $this->assertSame(array(array(array('foo', '123')), array(array('bar'), array('foo', '456'))), HeaderUtils::split('foo=123, bar; foo=456', ',;='));
-        $this->assertSame(array(array(array('foo', 'a,b;c=d'))), HeaderUtils::split('foo="a,b;c=d"', ',;='));
+        $this->assertSame(['foo=123', 'bar'], HeaderUtils::split('foo=123,bar', ','));
+        $this->assertSame(['foo=123', 'bar'], HeaderUtils::split('foo=123, bar', ','));
+        $this->assertSame([['foo=123', 'bar']], HeaderUtils::split('foo=123; bar', ',;'));
+        $this->assertSame([['foo=123'], ['bar']], HeaderUtils::split('foo=123, bar', ',;'));
+        $this->assertSame(['foo', '123, bar'], HeaderUtils::split('foo=123, bar', '='));
+        $this->assertSame(['foo', '123, bar'], HeaderUtils::split(' foo = 123, bar ', '='));
+        $this->assertSame([['foo', '123'], ['bar']], HeaderUtils::split('foo=123, bar', ',='));
+        $this->assertSame([[['foo', '123']], [['bar'], ['foo', '456']]], HeaderUtils::split('foo=123, bar; foo=456', ',;='));
+        $this->assertSame([[['foo', 'a,b;c=d']]], HeaderUtils::split('foo="a,b;c=d"', ',;='));
 
-        $this->assertSame(array('foo', 'bar'), HeaderUtils::split('foo,,,, bar', ','));
-        $this->assertSame(array('foo', 'bar'), HeaderUtils::split(',foo, bar,', ','));
-        $this->assertSame(array('foo', 'bar'), HeaderUtils::split(' , foo, bar, ', ','));
-        $this->assertSame(array('foo bar'), HeaderUtils::split('foo "bar"', ','));
-        $this->assertSame(array('foo bar'), HeaderUtils::split('"foo" bar', ','));
-        $this->assertSame(array('foo bar'), HeaderUtils::split('"foo" "bar"', ','));
+        $this->assertSame(['foo', 'bar'], HeaderUtils::split('foo,,,, bar', ','));
+        $this->assertSame(['foo', 'bar'], HeaderUtils::split(',foo, bar,', ','));
+        $this->assertSame(['foo', 'bar'], HeaderUtils::split(' , foo, bar, ', ','));
+        $this->assertSame(['foo bar'], HeaderUtils::split('foo "bar"', ','));
+        $this->assertSame(['foo bar'], HeaderUtils::split('"foo" bar', ','));
+        $this->assertSame(['foo bar'], HeaderUtils::split('"foo" "bar"', ','));
 
         // These are not a valid header values. We test that they parse anyway,
         // and that both the valid and invalid parts are returned.
-        $this->assertSame(array(), HeaderUtils::split('', ','));
-        $this->assertSame(array(), HeaderUtils::split(',,,', ','));
-        $this->assertSame(array('foo', 'bar', 'baz'), HeaderUtils::split('foo, "bar", "baz', ','));
-        $this->assertSame(array('foo', 'bar, baz'), HeaderUtils::split('foo, "bar, baz', ','));
-        $this->assertSame(array('foo', 'bar, baz\\'), HeaderUtils::split('foo, "bar, baz\\', ','));
-        $this->assertSame(array('foo', 'bar, baz\\'), HeaderUtils::split('foo, "bar, baz\\\\', ','));
+        $this->assertSame([], HeaderUtils::split('', ','));
+        $this->assertSame([], HeaderUtils::split(',,,', ','));
+        $this->assertSame(['foo', 'bar', 'baz'], HeaderUtils::split('foo, "bar", "baz', ','));
+        $this->assertSame(['foo', 'bar, baz'], HeaderUtils::split('foo, "bar, baz', ','));
+        $this->assertSame(['foo', 'bar, baz\\'], HeaderUtils::split('foo, "bar, baz\\', ','));
+        $this->assertSame(['foo', 'bar, baz\\'], HeaderUtils::split('foo, "bar, baz\\\\', ','));
     }
 
     public function testCombine()
     {
-        $this->assertSame(array('foo' => '123'), HeaderUtils::combine(array(array('foo', '123'))));
-        $this->assertSame(array('foo' => true), HeaderUtils::combine(array(array('foo'))));
-        $this->assertSame(array('foo' => true), HeaderUtils::combine(array(array('Foo'))));
-        $this->assertSame(array('foo' => '123', 'bar' => true), HeaderUtils::combine(array(array('foo', '123'), array('bar'))));
+        $this->assertSame(['foo' => '123'], HeaderUtils::combine([['foo', '123']]));
+        $this->assertSame(['foo' => true], HeaderUtils::combine([['foo']]));
+        $this->assertSame(['foo' => true], HeaderUtils::combine([['Foo']]));
+        $this->assertSame(['foo' => '123', 'bar' => true], HeaderUtils::combine([['foo', '123'], ['bar']]));
     }
 
     public function testToString()
     {
-        $this->assertSame('foo', HeaderUtils::toString(array('foo' => true), ','));
-        $this->assertSame('foo; bar', HeaderUtils::toString(array('foo' => true, 'bar' => true), ';'));
-        $this->assertSame('foo=123', HeaderUtils::toString(array('foo' => '123'), ','));
-        $this->assertSame('foo="1 2 3"', HeaderUtils::toString(array('foo' => '1 2 3'), ','));
-        $this->assertSame('foo="1 2 3", bar', HeaderUtils::toString(array('foo' => '1 2 3', 'bar' => true), ','));
+        $this->assertSame('foo', HeaderUtils::toString(['foo' => true], ','));
+        $this->assertSame('foo; bar', HeaderUtils::toString(['foo' => true, 'bar' => true], ';'));
+        $this->assertSame('foo=123', HeaderUtils::toString(['foo' => '123'], ','));
+        $this->assertSame('foo="1 2 3"', HeaderUtils::toString(['foo' => '1 2 3'], ','));
+        $this->assertSame('foo="1 2 3", bar', HeaderUtils::toString(['foo' => '1 2 3', 'bar' => true], ','));
     }
 
     public function testQuote()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index 36a949134849..222173ec003f 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -21,24 +21,24 @@ class RequestTest extends TestCase
 {
     protected function tearDown()
     {
-        Request::setTrustedProxies(array(), -1);
-        Request::setTrustedHosts(array());
+        Request::setTrustedProxies([], -1);
+        Request::setTrustedHosts([]);
     }
 
     public function testInitialize()
     {
         $request = new Request();
 
-        $request->initialize(array('foo' => 'bar'));
+        $request->initialize(['foo' => 'bar']);
         $this->assertEquals('bar', $request->query->get('foo'), '->initialize() takes an array of query parameters as its first argument');
 
-        $request->initialize(array(), array('foo' => 'bar'));
+        $request->initialize([], ['foo' => 'bar']);
         $this->assertEquals('bar', $request->request->get('foo'), '->initialize() takes an array of request parameters as its second argument');
 
-        $request->initialize(array(), array(), array('foo' => 'bar'));
+        $request->initialize([], [], ['foo' => 'bar']);
         $this->assertEquals('bar', $request->attributes->get('foo'), '->initialize() takes an array of attributes as its third argument');
 
-        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_FOO' => 'bar'));
+        $request->initialize([], [], [], [], [], ['HTTP_FOO' => 'bar']);
         $this->assertEquals('bar', $request->headers->get('FOO'), '->initialize() takes an array of HTTP headers as its sixth argument');
     }
 
@@ -101,7 +101,7 @@ public function testCreate()
         $this->assertEquals('test.com', $request->getHttpHost());
         $this->assertFalse($request->isSecure());
 
-        $request = Request::create('http://test.com/foo', 'GET', array('bar' => 'baz'));
+        $request = Request::create('http://test.com/foo', 'GET', ['bar' => 'baz']);
         $this->assertEquals('http://test.com/foo?bar=baz', $request->getUri());
         $this->assertEquals('/foo', $request->getPathInfo());
         $this->assertEquals('bar=baz', $request->getQueryString());
@@ -109,7 +109,7 @@ public function testCreate()
         $this->assertEquals('test.com', $request->getHttpHost());
         $this->assertFalse($request->isSecure());
 
-        $request = Request::create('http://test.com/foo?bar=foo', 'GET', array('bar' => 'baz'));
+        $request = Request::create('http://test.com/foo?bar=foo', 'GET', ['bar' => 'baz']);
         $this->assertEquals('http://test.com/foo?bar=baz', $request->getUri());
         $this->assertEquals('/foo', $request->getPathInfo());
         $this->assertEquals('bar=baz', $request->getQueryString());
@@ -166,7 +166,7 @@ public function testCreate()
         $this->assertTrue($request->isSecure());
 
         $json = '{"jsonrpc":"2.0","method":"echo","id":7,"params":["Hello World"]}';
-        $request = Request::create('http://example.com/jsonrpc', 'POST', array(), array(), array(), array(), $json);
+        $request = Request::create('http://example.com/jsonrpc', 'POST', [], [], [], [], $json);
         $this->assertEquals($json, $request->getContent());
         $this->assertFalse($request->isSecure());
 
@@ -216,16 +216,16 @@ public function testCreate()
 
         $request = Request::create('http://test.com/?foo');
         $this->assertEquals('/?foo', $request->getRequestUri());
-        $this->assertEquals(array('foo' => ''), $request->query->all());
+        $this->assertEquals(['foo' => ''], $request->query->all());
 
         // assume rewrite rule: (.*) --> app/app.php; app/ is a symlink to a symfony web/ directory
-        $request = Request::create('http://test.com/apparthotel-1234', 'GET', array(), array(), array(),
-            array(
+        $request = Request::create('http://test.com/apparthotel-1234', 'GET', [], [], [],
+            [
                 'DOCUMENT_ROOT' => '/var/www/www.test.com',
                 'SCRIPT_FILENAME' => '/var/www/www.test.com/app/app.php',
                 'SCRIPT_NAME' => '/app/app.php',
                 'PHP_SELF' => '/app/app.php/apparthotel-1234',
-            ));
+            ]);
         $this->assertEquals('http://test.com/apparthotel-1234', $request->getUri());
         $this->assertEquals('/apparthotel-1234', $request->getPathInfo());
         $this->assertEquals('', $request->getQueryString());
@@ -258,7 +258,7 @@ public function testCreateWithRequestUri()
         $this->assertEquals(8080, $request->getPort());
         $this->assertFalse($request->isSecure());
 
-        $request = Request::create('http://test.com/foo?bar=foo', 'GET', array('bar' => 'baz'));
+        $request = Request::create('http://test.com/foo?bar=foo', 'GET', ['bar' => 'baz']);
         $request->server->set('REQUEST_URI', 'http://test.com/foo?bar=foo');
         $this->assertEquals('http://test.com/foo?bar=baz', $request->getUri());
         $this->assertEquals('/foo', $request->getPathInfo());
@@ -289,13 +289,13 @@ public function testCreateWithRequestUri()
     public function testGetRequestUri($serverRequestUri, $expected, $message)
     {
         $request = new Request();
-        $request->server->add(array(
+        $request->server->add([
             'REQUEST_URI' => $serverRequestUri,
 
             // For having http://test.com
             'SERVER_NAME' => 'test.com',
             'SERVER_PORT' => 80,
-        ));
+        ]);
 
         $this->assertSame($expected, $request->getRequestUri(), $message);
         $this->assertSame($expected, $request->server->get('REQUEST_URI'), 'Normalize the request URI.');
@@ -304,21 +304,21 @@ public function testGetRequestUri($serverRequestUri, $expected, $message)
     public function getRequestUriData()
     {
         $message = 'Do not modify the path.';
-        yield array('/foo', '/foo', $message);
-        yield array('//bar/foo', '//bar/foo', $message);
-        yield array('///bar/foo', '///bar/foo', $message);
+        yield ['/foo', '/foo', $message];
+        yield ['//bar/foo', '//bar/foo', $message];
+        yield ['///bar/foo', '///bar/foo', $message];
 
         $message = 'Handle when the scheme, host are on REQUEST_URI.';
-        yield array('http://test.com/foo?bar=baz', '/foo?bar=baz', $message);
+        yield ['http://test.com/foo?bar=baz', '/foo?bar=baz', $message];
 
         $message = 'Handle when the scheme, host and port are on REQUEST_URI.';
-        yield array('http://test.com:80/foo', '/foo', $message);
-        yield array('https://test.com:8080/foo', '/foo', $message);
-        yield array('https://test.com:443/foo', '/foo', $message);
+        yield ['http://test.com:80/foo', '/foo', $message];
+        yield ['https://test.com:8080/foo', '/foo', $message];
+        yield ['https://test.com:443/foo', '/foo', $message];
 
         $message = 'Fragment should not be included in the URI';
-        yield array('http://test.com/foo#bar', '/foo', $message);
-        yield array('/foo#bar', '/foo', $message);
+        yield ['http://test.com/foo#bar', '/foo', $message];
+        yield ['/foo#bar', '/foo', $message];
     }
 
     public function testGetRequestUriWithoutRequiredHeader()
@@ -335,7 +335,7 @@ public function testGetRequestUriWithoutRequiredHeader()
     public function testCreateCheckPrecedence()
     {
         // server is used by default
-        $request = Request::create('/', 'DELETE', array(), array(), array(), array(
+        $request = Request::create('/', 'DELETE', [], [], [], [
             'HTTP_HOST' => 'example.com',
             'HTTPS' => 'on',
             'SERVER_PORT' => 443,
@@ -343,7 +343,7 @@ public function testCreateCheckPrecedence()
             'PHP_AUTH_PW' => 'pa$$',
             'QUERY_STRING' => 'foo=bar',
             'CONTENT_TYPE' => 'application/json',
-        ));
+        ]);
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(443, $request->getPort());
         $this->assertTrue($request->isSecure());
@@ -353,11 +353,11 @@ public function testCreateCheckPrecedence()
         $this->assertEquals('application/json', $request->headers->get('CONTENT_TYPE'));
 
         // URI has precedence over server
-        $request = Request::create('http://thomas:pokemon@example.net:8080/?foo=bar', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://thomas:pokemon@example.net:8080/?foo=bar', 'GET', [], [], [], [
             'HTTP_HOST' => 'example.com',
             'HTTPS' => 'on',
             'SERVER_PORT' => 443,
-        ));
+        ]);
         $this->assertEquals('example.net', $request->getHost());
         $this->assertEquals(8080, $request->getPort());
         $this->assertFalse($request->isSecure());
@@ -368,7 +368,7 @@ public function testCreateCheckPrecedence()
 
     public function testDuplicate()
     {
-        $request = new Request(array('foo' => 'bar'), array('foo' => 'bar'), array('foo' => 'bar'), array(), array(), array('HTTP_FOO' => 'bar'));
+        $request = new Request(['foo' => 'bar'], ['foo' => 'bar'], ['foo' => 'bar'], [], [], ['HTTP_FOO' => 'bar']);
         $dup = $request->duplicate();
 
         $this->assertEquals($request->query->all(), $dup->query->all(), '->duplicate() duplicates a request an copy the current query parameters');
@@ -376,17 +376,17 @@ public function testDuplicate()
         $this->assertEquals($request->attributes->all(), $dup->attributes->all(), '->duplicate() duplicates a request an copy the current attributes');
         $this->assertEquals($request->headers->all(), $dup->headers->all(), '->duplicate() duplicates a request an copy the current HTTP headers');
 
-        $dup = $request->duplicate(array('foo' => 'foobar'), array('foo' => 'foobar'), array('foo' => 'foobar'), array(), array(), array('HTTP_FOO' => 'foobar'));
+        $dup = $request->duplicate(['foo' => 'foobar'], ['foo' => 'foobar'], ['foo' => 'foobar'], [], [], ['HTTP_FOO' => 'foobar']);
 
-        $this->assertEquals(array('foo' => 'foobar'), $dup->query->all(), '->duplicate() overrides the query parameters if provided');
-        $this->assertEquals(array('foo' => 'foobar'), $dup->request->all(), '->duplicate() overrides the request parameters if provided');
-        $this->assertEquals(array('foo' => 'foobar'), $dup->attributes->all(), '->duplicate() overrides the attributes if provided');
-        $this->assertEquals(array('foo' => array('foobar')), $dup->headers->all(), '->duplicate() overrides the HTTP header if provided');
+        $this->assertEquals(['foo' => 'foobar'], $dup->query->all(), '->duplicate() overrides the query parameters if provided');
+        $this->assertEquals(['foo' => 'foobar'], $dup->request->all(), '->duplicate() overrides the request parameters if provided');
+        $this->assertEquals(['foo' => 'foobar'], $dup->attributes->all(), '->duplicate() overrides the attributes if provided');
+        $this->assertEquals(['foo' => ['foobar']], $dup->headers->all(), '->duplicate() overrides the HTTP header if provided');
     }
 
     public function testDuplicateWithFormat()
     {
-        $request = new Request(array(), array(), array('_format' => 'json'));
+        $request = new Request([], [], ['_format' => 'json']);
         $dup = $request->duplicate();
 
         $this->assertEquals('json', $dup->getRequestFormat());
@@ -421,7 +421,7 @@ public function testGetFormatFromMimeType($format, $mimeTypes)
     public function getFormatToMimeTypeMapProviderWithAdditionalNullFormat()
     {
         return array_merge(
-            array(array(null, array(null, 'unexistent-mime-type'))),
+            [[null, [null, 'unexistent-mime-type']]],
             $this->getFormatToMimeTypeMapProvider()
         );
     }
@@ -456,7 +456,7 @@ public function testGetMimeTypesFromInexistentFormat()
     {
         $request = new Request();
         $this->assertNull($request->getMimeType('foo'));
-        $this->assertEquals(array(), Request::getMimeTypes('foo'));
+        $this->assertEquals([], Request::getMimeTypes('foo'));
     }
 
     public function testGetFormatWithCustomMimeType()
@@ -468,21 +468,21 @@ public function testGetFormatWithCustomMimeType()
 
     public function getFormatToMimeTypeMapProvider()
     {
-        return array(
-            array('txt', array('text/plain')),
-            array('js', array('application/javascript', 'application/x-javascript', 'text/javascript')),
-            array('css', array('text/css')),
-            array('json', array('application/json', 'application/x-json')),
-            array('jsonld', array('application/ld+json')),
-            array('xml', array('text/xml', 'application/xml', 'application/x-xml')),
-            array('rdf', array('application/rdf+xml')),
-            array('atom', array('application/atom+xml')),
-        );
+        return [
+            ['txt', ['text/plain']],
+            ['js', ['application/javascript', 'application/x-javascript', 'text/javascript']],
+            ['css', ['text/css']],
+            ['json', ['application/json', 'application/x-json']],
+            ['jsonld', ['application/ld+json']],
+            ['xml', ['text/xml', 'application/xml', 'application/x-xml']],
+            ['rdf', ['application/rdf+xml']],
+            ['atom', ['application/atom+xml']],
+        ];
     }
 
     public function testGetUri()
     {
-        $server = array();
+        $server = [];
 
         // Standard Request on non default PORT
         // http://host:8080/index.php/path/info?query=string
@@ -501,7 +501,7 @@ public function testGetUri()
 
         $request = new Request();
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host:8080/index.php/path/info?query=string', $request->getUri(), '->getUri() with non default port');
 
@@ -510,7 +510,7 @@ public function testGetUri()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host/index.php/path/info?query=string', $request->getUri(), '->getUri() with default port');
 
@@ -519,7 +519,7 @@ public function testGetUri()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://servername/index.php/path/info?query=string', $request->getUri(), '->getUri() with default port without HOST_HEADER');
 
@@ -527,7 +527,7 @@ public function testGetUri()
         //   RewriteCond %{REQUEST_FILENAME} !-f
         //   RewriteRule ^(.*)$ index.php [QSA,L]
         // http://host:8080/path/info?query=string
-        $server = array();
+        $server = [];
         $server['HTTP_HOST'] = 'host:8080';
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '8080';
@@ -541,7 +541,7 @@ public function testGetUri()
         $server['PHP_SELF'] = '/index.php';
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://host:8080/path/info?query=string', $request->getUri(), '->getUri() with rewrite');
 
         // Use std port number
@@ -550,7 +550,7 @@ public function testGetUri()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host/path/info?query=string', $request->getUri(), '->getUri() with rewrite and default port');
 
@@ -559,13 +559,13 @@ public function testGetUri()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://servername/path/info?query=string', $request->getUri(), '->getUri() with rewrite, default port without HOST_HEADER');
 
         // With encoded characters
 
-        $server = array(
+        $server = [
             'HTTP_HOST' => 'host:8080',
             'SERVER_NAME' => 'servername',
             'SERVER_PORT' => '8080',
@@ -575,9 +575,9 @@ public function testGetUri()
             'PATH_TRANSLATED' => 'redirect:/index.php/foo bar/in+fo',
             'PHP_SELF' => '/ba se/index_dev.php/path/info',
             'SCRIPT_FILENAME' => '/some/where/ba se/index_dev.php',
-        );
+        ];
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals(
             'http://host:8080/ba%20se/index_dev.php/foo%20bar/in+fo?query=string',
@@ -587,11 +587,11 @@ public function testGetUri()
         // with user info
 
         $server['PHP_AUTH_USER'] = 'fabien';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://host:8080/ba%20se/index_dev.php/foo%20bar/in+fo?query=string', $request->getUri());
 
         $server['PHP_AUTH_PW'] = 'symfony';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://host:8080/ba%20se/index_dev.php/foo%20bar/in+fo?query=string', $request->getUri());
     }
 
@@ -609,7 +609,7 @@ public function testGetUriForPath()
         $request = Request::create('https://test.com:90/foo?bar=baz');
         $this->assertEquals('https://test.com:90/some/path', $request->getUriForPath('/some/path'));
 
-        $server = array();
+        $server = [];
 
         // Standard Request on non default PORT
         // http://host:8080/index.php/path/info?query=string
@@ -628,7 +628,7 @@ public function testGetUriForPath()
 
         $request = new Request();
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host:8080/index.php/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with non default port');
 
@@ -637,7 +637,7 @@ public function testGetUriForPath()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host/index.php/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with default port');
 
@@ -646,7 +646,7 @@ public function testGetUriForPath()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://servername/index.php/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with default port without HOST_HEADER');
 
@@ -654,7 +654,7 @@ public function testGetUriForPath()
         //   RewriteCond %{REQUEST_FILENAME} !-f
         //   RewriteRule ^(.*)$ index.php [QSA,L]
         // http://host:8080/path/info?query=string
-        $server = array();
+        $server = [];
         $server['HTTP_HOST'] = 'host:8080';
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '8080';
@@ -668,7 +668,7 @@ public function testGetUriForPath()
         $server['PHP_SELF'] = '/index.php';
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://host:8080/some/path', $request->getUriForPath('/some/path'), '->getUri() with rewrite');
 
         // Use std port number
@@ -677,7 +677,7 @@ public function testGetUriForPath()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://host/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with rewrite and default port');
 
@@ -686,7 +686,7 @@ public function testGetUriForPath()
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '80';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('http://servername/some/path', $request->getUriForPath('/some/path'), '->getUriForPath() with rewrite, default port without HOST_HEADER');
         $this->assertEquals('servername', $request->getHttpHost());
@@ -694,11 +694,11 @@ public function testGetUriForPath()
         // with user info
 
         $server['PHP_AUTH_USER'] = 'fabien';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername/some/path', $request->getUriForPath('/some/path'));
 
         $server['PHP_AUTH_PW'] = 'symfony';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername/some/path', $request->getUriForPath('/some/path'));
     }
 
@@ -712,30 +712,30 @@ public function testGetRelativeUriForPath($expected, $pathinfo, $path)
 
     public function getRelativeUriForPathData()
     {
-        return array(
-            array('me.png', '/foo', '/me.png'),
-            array('../me.png', '/foo/bar', '/me.png'),
-            array('me.png', '/foo/bar', '/foo/me.png'),
-            array('../baz/me.png', '/foo/bar/b', '/foo/baz/me.png'),
-            array('../../fooz/baz/me.png', '/foo/bar/b', '/fooz/baz/me.png'),
-            array('baz/me.png', '/foo/bar/b', 'baz/me.png'),
-        );
+        return [
+            ['me.png', '/foo', '/me.png'],
+            ['../me.png', '/foo/bar', '/me.png'],
+            ['me.png', '/foo/bar', '/foo/me.png'],
+            ['../baz/me.png', '/foo/bar/b', '/foo/baz/me.png'],
+            ['../../fooz/baz/me.png', '/foo/bar/b', '/fooz/baz/me.png'],
+            ['baz/me.png', '/foo/bar/b', 'baz/me.png'],
+        ];
     }
 
     public function testGetUserInfo()
     {
         $request = new Request();
 
-        $server = array('PHP_AUTH_USER' => 'fabien');
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $server = ['PHP_AUTH_USER' => 'fabien'];
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('fabien', $request->getUserInfo());
 
         $server['PHP_AUTH_USER'] = '0';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('0', $request->getUserInfo());
 
         $server['PHP_AUTH_PW'] = '0';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('0:0', $request->getUserInfo());
     }
 
@@ -743,22 +743,22 @@ public function testGetSchemeAndHttpHost()
     {
         $request = new Request();
 
-        $server = array();
+        $server = [];
         $server['SERVER_NAME'] = 'servername';
         $server['SERVER_PORT'] = '90';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername:90', $request->getSchemeAndHttpHost());
 
         $server['PHP_AUTH_USER'] = 'fabien';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername:90', $request->getSchemeAndHttpHost());
 
         $server['PHP_AUTH_USER'] = '0';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername:90', $request->getSchemeAndHttpHost());
 
         $server['PHP_AUTH_PW'] = '0';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('http://servername:90', $request->getSchemeAndHttpHost());
     }
 
@@ -775,35 +775,35 @@ public function testGetQueryString($query, $expectedQuery, $msg)
 
     public function getQueryStringNormalizationData()
     {
-        return array(
-            array('foo', 'foo=', 'works with valueless parameters'),
-            array('foo=', 'foo=', 'includes a dangling equal sign'),
-            array('bar=&foo=bar', 'bar=&foo=bar', '->works with empty parameters'),
-            array('foo=bar&bar=', 'bar=&foo=bar', 'sorts keys alphabetically'),
+        return [
+            ['foo', 'foo=', 'works with valueless parameters'],
+            ['foo=', 'foo=', 'includes a dangling equal sign'],
+            ['bar=&foo=bar', 'bar=&foo=bar', '->works with empty parameters'],
+            ['foo=bar&bar=', 'bar=&foo=bar', 'sorts keys alphabetically'],
 
             // GET parameters, that are submitted from a HTML form, encode spaces as "+" by default (as defined in enctype application/x-www-form-urlencoded).
             // PHP also converts "+" to spaces when filling the global _GET or when using the function parse_str.
-            array('him=John%20Doe&her=Jane+Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes spaces in both encodings "%20" and "+"'),
+            ['him=John%20Doe&her=Jane+Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes spaces in both encodings "%20" and "+"'],
 
-            array('foo[]=1&foo[]=2', 'foo%5B0%5D=1&foo%5B1%5D=2', 'allows array notation'),
-            array('foo=1&foo=2', 'foo=2', 'merges repeated parameters'),
-            array('pa%3Dram=foo%26bar%3Dbaz&test=test', 'pa%3Dram=foo%26bar%3Dbaz&test=test', 'works with encoded delimiters'),
-            array('0', '0=', 'allows "0"'),
-            array('Jane Doe&John%20Doe', 'Jane_Doe=&John_Doe=', 'normalizes encoding in keys'),
-            array('her=Jane Doe&him=John%20Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes encoding in values'),
-            array('foo=bar&&&test&&', 'foo=bar&test=', 'removes unneeded delimiters'),
-            array('formula=e=m*c^2', 'formula=e%3Dm%2Ac%5E2', 'correctly treats only the first "=" as delimiter and the next as value'),
+            ['foo[]=1&foo[]=2', 'foo%5B0%5D=1&foo%5B1%5D=2', 'allows array notation'],
+            ['foo=1&foo=2', 'foo=2', 'merges repeated parameters'],
+            ['pa%3Dram=foo%26bar%3Dbaz&test=test', 'pa%3Dram=foo%26bar%3Dbaz&test=test', 'works with encoded delimiters'],
+            ['0', '0=', 'allows "0"'],
+            ['Jane Doe&John%20Doe', 'Jane_Doe=&John_Doe=', 'normalizes encoding in keys'],
+            ['her=Jane Doe&him=John%20Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes encoding in values'],
+            ['foo=bar&&&test&&', 'foo=bar&test=', 'removes unneeded delimiters'],
+            ['formula=e=m*c^2', 'formula=e%3Dm%2Ac%5E2', 'correctly treats only the first "=" as delimiter and the next as value'],
 
             // Ignore pairs with empty key, even if there was a value, e.g. "=value", as such nameless values cannot be retrieved anyway.
             // PHP also does not include them when building _GET.
-            array('foo=bar&=a=b&=x=y', 'foo=bar', 'removes params with empty key'),
+            ['foo=bar&=a=b&=x=y', 'foo=bar', 'removes params with empty key'],
 
             // Don't reorder nested query string keys
-            array('foo[]=Z&foo[]=A', 'foo%5B0%5D=Z&foo%5B1%5D=A', 'keeps order of values'),
-            array('foo[Z]=B&foo[A]=B', 'foo%5BZ%5D=B&foo%5BA%5D=B', 'keeps order of keys'),
+            ['foo[]=Z&foo[]=A', 'foo%5B0%5D=Z&foo%5B1%5D=A', 'keeps order of values'],
+            ['foo[Z]=B&foo[A]=B', 'foo%5BZ%5D=B&foo%5BA%5D=B', 'keeps order of keys'],
 
-            array('utf8=✓', 'utf8=%E2%9C%93', 'encodes UTF-8'),
-        );
+            ['utf8=✓', 'utf8=%E2%9C%93', 'encodes UTF-8'],
+        ];
     }
 
     public function testGetQueryStringReturnsNull()
@@ -820,74 +820,74 @@ public function testGetHost()
     {
         $request = new Request();
 
-        $request->initialize(array('foo' => 'bar'));
+        $request->initialize(['foo' => 'bar']);
         $this->assertEquals('', $request->getHost(), '->getHost() return empty string if not initialized');
 
-        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_HOST' => 'www.example.com'));
+        $request->initialize([], [], [], [], [], ['HTTP_HOST' => 'www.example.com']);
         $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from Host Header');
 
         // Host header with port number
-        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_HOST' => 'www.example.com:8080'));
+        $request->initialize([], [], [], [], [], ['HTTP_HOST' => 'www.example.com:8080']);
         $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from Host Header with port number');
 
         // Server values
-        $request->initialize(array(), array(), array(), array(), array(), array('SERVER_NAME' => 'www.example.com'));
+        $request->initialize([], [], [], [], [], ['SERVER_NAME' => 'www.example.com']);
         $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from server name');
 
-        $request->initialize(array(), array(), array(), array(), array(), array('SERVER_NAME' => 'www.example.com', 'HTTP_HOST' => 'www.host.com'));
+        $request->initialize([], [], [], [], [], ['SERVER_NAME' => 'www.example.com', 'HTTP_HOST' => 'www.host.com']);
         $this->assertEquals('www.host.com', $request->getHost(), '->getHost() value from Host header has priority over SERVER_NAME ');
     }
 
     public function testGetPort()
     {
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'https',
             'HTTP_X_FORWARDED_PORT' => '443',
-        ));
+        ]);
         $port = $request->getPort();
 
         $this->assertEquals(80, $port, 'Without trusted proxies FORWARDED_PROTO and FORWARDED_PORT are ignored.');
 
-        Request::setTrustedProxies(array('1.1.1.1'), Request::HEADER_X_FORWARDED_ALL);
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        Request::setTrustedProxies(['1.1.1.1'], Request::HEADER_X_FORWARDED_ALL);
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'https',
             'HTTP_X_FORWARDED_PORT' => '8443',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'With PROTO and PORT on untrusted connection server value takes precedence.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(8443, $request->getPort(), 'With PROTO and PORT set PORT takes precedence.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'https',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'With only PROTO set getPort() ignores trusted headers on untrusted connection.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(443, $request->getPort(), 'With only PROTO set getPort() defaults to 443.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'http',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'If X_FORWARDED_PROTO is set to HTTP getPort() ignores trusted headers on untrusted connection.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(80, $request->getPort(), 'If X_FORWARDED_PROTO is set to HTTP getPort() returns port of the original request.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'On',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'With only PROTO set and value is On, getPort() ignores trusted headers on untrusted connection.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(443, $request->getPort(), 'With only PROTO set and value is On, getPort() defaults to 443.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => '1',
-        ));
+        ]);
         $this->assertEquals(80, $request->getPort(), 'With only PROTO set and value is 1, getPort() ignores trusted headers on untrusted connection.');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertEquals(443, $request->getPort(), 'With only PROTO set and value is 1, getPort() defaults to 443.');
 
-        $request = Request::create('http://example.com', 'GET', array(), array(), array(), array(
+        $request = Request::create('http://example.com', 'GET', [], [], [], [
             'HTTP_X_FORWARDED_PROTO' => 'something-else',
-        ));
+        ]);
         $port = $request->getPort();
         $this->assertEquals(80, $port, 'With only PROTO set and value is not recognized, getPort() defaults to 80.');
     }
@@ -898,7 +898,7 @@ public function testGetPort()
     public function testGetHostWithFakeHttpHostValue()
     {
         $request = new Request();
-        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_HOST' => 'www.host.com?query=string'));
+        $request->initialize([], [], [], [], [], ['HTTP_HOST' => 'www.host.com?query=string']);
         $request->getHost();
     }
 
@@ -958,7 +958,7 @@ public function testGetSetMethod()
 
         $request = new Request();
         $request->setMethod('POST');
-        $request->query->set('_method', array('delete', 'patch'));
+        $request->query->set('_method', ['delete', 'patch']);
         $this->assertSame('POST', $request->getMethod(), '->getMethod() returns the request method if invalid type is defined in query');
     }
 
@@ -995,69 +995,69 @@ public function testGetClientIpsForwarded($expected, $remoteAddr, $httpForwarded
     public function getClientIpsForwardedProvider()
     {
         //              $expected                                  $remoteAddr  $httpForwarded                                       $trustedProxies
-        return array(
-            array(array('127.0.0.1'),                              '127.0.0.1', 'for="_gazonk"',                                      null),
-            array(array('127.0.0.1'),                              '127.0.0.1', 'for="_gazonk"',                                      array('127.0.0.1')),
-            array(array('88.88.88.88'),                            '127.0.0.1', 'for="88.88.88.88:80"',                               array('127.0.0.1')),
-            array(array('192.0.2.60'),                             '::1',       'for=192.0.2.60;proto=http;by=203.0.113.43',          array('::1')),
-            array(array('2620:0:1cfe:face:b00c::3', '192.0.2.43'), '::1',       'for=192.0.2.43, for="[2620:0:1cfe:face:b00c::3]"',   array('::1')),
-            array(array('2001:db8:cafe::17'),                      '::1',       'for="[2001:db8:cafe::17]:4711',                      array('::1')),
-        );
+        return [
+            [['127.0.0.1'],                              '127.0.0.1', 'for="_gazonk"',                                      null],
+            [['127.0.0.1'],                              '127.0.0.1', 'for="_gazonk"',                                      ['127.0.0.1']],
+            [['88.88.88.88'],                            '127.0.0.1', 'for="88.88.88.88:80"',                               ['127.0.0.1']],
+            [['192.0.2.60'],                             '::1',       'for=192.0.2.60;proto=http;by=203.0.113.43',          ['::1']],
+            [['2620:0:1cfe:face:b00c::3', '192.0.2.43'], '::1',       'for=192.0.2.43, for="[2620:0:1cfe:face:b00c::3]"',   ['::1']],
+            [['2001:db8:cafe::17'],                      '::1',       'for="[2001:db8:cafe::17]:4711',                      ['::1']],
+        ];
     }
 
     public function getClientIpsProvider()
     {
         //        $expected                          $remoteAddr                 $httpForwardedFor            $trustedProxies
-        return array(
+        return [
             // simple IPv4
-            array(array('88.88.88.88'),              '88.88.88.88',              null,                        null),
+            [['88.88.88.88'],              '88.88.88.88',              null,                        null],
             // trust the IPv4 remote addr
-            array(array('88.88.88.88'),              '88.88.88.88',              null,                        array('88.88.88.88')),
+            [['88.88.88.88'],              '88.88.88.88',              null,                        ['88.88.88.88']],
 
             // simple IPv6
-            array(array('::1'),                      '::1',                      null,                        null),
+            [['::1'],                      '::1',                      null,                        null],
             // trust the IPv6 remote addr
-            array(array('::1'),                      '::1',                      null,                        array('::1')),
+            [['::1'],                      '::1',                      null,                        ['::1']],
 
             // forwarded for with remote IPv4 addr not trusted
-            array(array('127.0.0.1'),                '127.0.0.1',                '88.88.88.88',               null),
+            [['127.0.0.1'],                '127.0.0.1',                '88.88.88.88',               null],
             // forwarded for with remote IPv4 addr trusted + comma
-            array(array('88.88.88.88'),              '127.0.0.1',                '88.88.88.88,',              array('127.0.0.1')),
+            [['88.88.88.88'],              '127.0.0.1',                '88.88.88.88,',              ['127.0.0.1']],
             // forwarded for with remote IPv4 and all FF addrs trusted
-            array(array('88.88.88.88'),              '127.0.0.1',                '88.88.88.88',               array('127.0.0.1', '88.88.88.88')),
+            [['88.88.88.88'],              '127.0.0.1',                '88.88.88.88',               ['127.0.0.1', '88.88.88.88']],
             // forwarded for with remote IPv4 range trusted
-            array(array('88.88.88.88'),              '123.45.67.89',             '88.88.88.88',               array('123.45.67.0/24')),
+            [['88.88.88.88'],              '123.45.67.89',             '88.88.88.88',               ['123.45.67.0/24']],
 
             // forwarded for with remote IPv6 addr not trusted
-            array(array('1620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  null),
+            [['1620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  null],
             // forwarded for with remote IPv6 addr trusted
-            array(array('2620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  array('1620:0:1cfe:face:b00c::3')),
+            [['2620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3',  ['1620:0:1cfe:face:b00c::3']],
             // forwarded for with remote IPv6 range trusted
-            array(array('88.88.88.88'),              '2a01:198:603:0:396e:4789:8e99:890f', '88.88.88.88',     array('2a01:198:603:0::/65')),
+            [['88.88.88.88'],              '2a01:198:603:0:396e:4789:8e99:890f', '88.88.88.88',     ['2a01:198:603:0::/65']],
 
             // multiple forwarded for with remote IPv4 addr trusted
-            array(array('88.88.88.88', '87.65.43.21', '127.0.0.1'), '123.45.67.89', '127.0.0.1, 87.65.43.21, 88.88.88.88', array('123.45.67.89')),
+            [['88.88.88.88', '87.65.43.21', '127.0.0.1'], '123.45.67.89', '127.0.0.1, 87.65.43.21, 88.88.88.88', ['123.45.67.89']],
             // multiple forwarded for with remote IPv4 addr and some reverse proxies trusted
-            array(array('87.65.43.21', '127.0.0.1'), '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', array('123.45.67.89', '88.88.88.88')),
+            [['87.65.43.21', '127.0.0.1'], '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', ['123.45.67.89', '88.88.88.88']],
             // multiple forwarded for with remote IPv4 addr and some reverse proxies trusted but in the middle
-            array(array('88.88.88.88', '127.0.0.1'), '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', array('123.45.67.89', '87.65.43.21')),
+            [['88.88.88.88', '127.0.0.1'], '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', ['123.45.67.89', '87.65.43.21']],
             // multiple forwarded for with remote IPv4 addr and all reverse proxies trusted
-            array(array('127.0.0.1'),                '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', array('123.45.67.89', '87.65.43.21', '88.88.88.88', '127.0.0.1')),
+            [['127.0.0.1'],                '123.45.67.89',             '127.0.0.1, 87.65.43.21, 88.88.88.88', ['123.45.67.89', '87.65.43.21', '88.88.88.88', '127.0.0.1']],
 
             // multiple forwarded for with remote IPv6 addr trusted
-            array(array('2620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', array('1620:0:1cfe:face:b00c::3')),
+            [['2620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', ['1620:0:1cfe:face:b00c::3']],
             // multiple forwarded for with remote IPv6 addr and some reverse proxies trusted
-            array(array('3620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', array('1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3')),
+            [['3620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', ['1620:0:1cfe:face:b00c::3', '2620:0:1cfe:face:b00c::3']],
             // multiple forwarded for with remote IPv4 addr and some reverse proxies trusted but in the middle
-            array(array('2620:0:1cfe:face:b
10000
00c::3', '4620:0:1cfe:face:b00c::3'), '1620:0:1cfe:face:b00c::3', '4620:0:1cfe:face:b00c::3,3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', array('1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3')),
+            [['2620:0:1cfe:face:b00c::3', '4620:0:1cfe:face:b00c::3'], '1620:0:1cfe:face:b00c::3', '4620:0:1cfe:face:b00c::3,3620:0:1cfe:face:b00c::3,2620:0:1cfe:face:b00c::3', ['1620:0:1cfe:face:b00c::3', '3620:0:1cfe:face:b00c::3']],
 
             // client IP with port
-            array(array('88.88.88.88'), '127.0.0.1', '88.88.88.88:12345, 127.0.0.1', array('127.0.0.1')),
+            [['88.88.88.88'], '127.0.0.1', '88.88.88.88:12345, 127.0.0.1', ['127.0.0.1']],
 
             // invalid forwarded IP is ignored
-            array(array('88.88.88.88'), '127.0.0.1', 'unknown,88.88.88.88', array('127.0.0.1')),
-            array(array('88.88.88.88'), '127.0.0.1', '}__test|O:21:&quot;JDatabaseDriverMysqli&quot;:3:{s:2,88.88.88.88', array('127.0.0.1')),
-        );
+            [['88.88.88.88'], '127.0.0.1', 'unknown,88.88.88.88', ['127.0.0.1']],
+            [['88.88.88.88'], '127.0.0.1', '}__test|O:21:&quot;JDatabaseDriverMysqli&quot;:3:{s:2,88.88.88.88', ['127.0.0.1']],
+        ];
     }
 
     /**
@@ -1068,15 +1068,15 @@ public function testGetClientIpsWithConflictingHeaders($httpForwarded, $httpXFor
     {
         $request = new Request();
 
-        $server = array(
+        $server = [
             'REMOTE_ADDR' => '88.88.88.88',
             'HTTP_FORWARDED' => $httpForwarded,
             'HTTP_X_FORWARDED_FOR' => $httpXForwardedFor,
-        );
+        ];
 
-        Request::setTrustedProxies(array('88.88.88.88'), Request::HEADER_X_FORWARDED_ALL | Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['88.88.88.88'], Request::HEADER_X_FORWARDED_ALL | Request::HEADER_FORWARDED);
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $request->getClientIps();
     }
@@ -1088,15 +1088,15 @@ public function testGetClientIpsOnlyXHttpForwardedForTrusted($httpForwarded, $ht
     {
         $request = new Request();
 
-        $server = array(
+        $server = [
             'REMOTE_ADDR' => '88.88.88.88',
             'HTTP_FORWARDED' => $httpForwarded,
             'HTTP_X_FORWARDED_FOR' => $httpXForwardedFor,
-        );
+        ];
 
-        Request::setTrustedProxies(array('88.88.88.88'), Request::HEADER_X_FORWARDED_FOR);
+        Request::setTrustedProxies(['88.88.88.88'], Request::HEADER_X_FORWARDED_FOR);
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertSame(array_reverse(explode(',', $httpXForwardedFor)), $request->getClientIps());
     }
@@ -1104,13 +1104,13 @@ public function testGetClientIpsOnlyXHttpForwardedForTrusted($httpForwarded, $ht
     public function getClientIpsWithConflictingHeadersProvider()
     {
         //        $httpForwarded                   $httpXForwardedFor
-        return array(
-            array('for=87.65.43.21',                 '192.0.2.60'),
-            array('for=87.65.43.21, for=192.0.2.60', '192.0.2.60'),
-            array('for=192.0.2.60',                  '192.0.2.60,87.65.43.21'),
-            array('for="::face", for=192.0.2.60',    '192.0.2.60,192.0.2.43'),
-            array('for=87.65.43.21, for=192.0.2.60', '192.0.2.60,87.65.43.21'),
-        );
+        return [
+            ['for=87.65.43.21',                 '192.0.2.60'],
+            ['for=87.65.43.21, for=192.0.2.60', '192.0.2.60'],
+            ['for=192.0.2.60',                  '192.0.2.60,87.65.43.21'],
+            ['for="::face", for=192.0.2.60',    '192.0.2.60,192.0.2.43'],
+            ['for=87.65.43.21, for=192.0.2.60', '192.0.2.60,87.65.43.21'],
+        ];
     }
 
     /**
@@ -1120,15 +1120,15 @@ public function testGetClientIpsWithAgreeingHeaders($httpForwarded, $httpXForwar
     {
         $request = new Request();
 
-        $server = array(
+        $server = [
             'REMOTE_ADDR' => '88.88.88.88',
             'HTTP_FORWARDED' => $httpForwarded,
             'HTTP_X_FORWARDED_FOR' => $httpXForwardedFor,
-        );
+        ];
 
-        Request::setTrustedProxies(array('88.88.88.88'), -1);
+        Request::setTrustedProxies(['88.88.88.88'], -1);
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $clientIps = $request->getClientIps();
 
@@ -1138,14 +1138,14 @@ public function testGetClientIpsWithAgreeingHeaders($httpForwarded, $httpXForwar
     public function getClientIpsWithAgreeingHeadersProvider()
     {
         //        $httpForwarded                               $httpXForwardedFor
-        return array(
-            array('for="192.0.2.60"',                          '192.0.2.60',             array('192.0.2.60')),
-            array('for=192.0.2.60, for=87.65.43.21',           '192.0.2.60,87.65.43.21', array('87.65.43.21', '192.0.2.60')),
-            array('for="[::face]", for=192.0.2.60',            '::face,192.0.2.60',      array('192.0.2.60', '::face')),
-            array('for="192.0.2.60:80"',                       '192.0.2.60',             array('192.0.2.60')),
-            array('for=192.0.2.60;proto=http;by=203.0.113.43', '192.0.2.60',             array('192.0.2.60')),
-            array('for="[2001:db8:cafe::17]:4711"',            '2001:db8:cafe::17',      array('2001:db8:cafe::17')),
-        );
+        return [
+            ['for="192.0.2.60"',                          '192.0.2.60',             ['192.0.2.60']],
+            ['for=192.0.2.60, for=87.65.43.21',           '192.0.2.60,87.65.43.21', ['87.65.43.21', '192.0.2.60']],
+            ['for="[::face]", for=192.0.2.60',            '::face,192.0.2.60',      ['192.0.2.60', '::face']],
+            ['for="192.0.2.60:80"',                       '192.0.2.60',             ['192.0.2.60']],
+            ['for=192.0.2.60;proto=http;by=203.0.113.43', '192.0.2.60',             ['192.0.2.60']],
+            ['for="[2001:db8:cafe::17]:4711"',            '2001:db8:cafe::17',      ['2001:db8:cafe::17']],
+        ];
     }
 
     public function testGetContentWorksTwiceInDefaultMode()
@@ -1166,7 +1166,7 @@ public function testGetContentReturnsResource()
 
     public function testGetContentReturnsResourceWhenContentSetInConstructor()
     {
-        $req = new Request(array(), array(), array(), array(), array(), array(), 'MyContent');
+        $req = new Request([], [], [], [], [], [], 'MyContent');
         $resource = $req->getContent(true);
 
         $this->assertInternalType('resource', $resource);
@@ -1179,17 +1179,17 @@ public function testContentAsResource()
         fwrite($resource, 'My other content');
         rewind($resource);
 
-        $req = new Request(array(), array(), array(), array(), array(), array(), $resource);
+        $req = new Request([], [], [], [], [], [], $resource);
         $this->assertEquals('My other content', stream_get_contents($req->getContent(true)));
         $this->assertEquals('My other content', $req->getContent());
     }
 
     public function getContentCantBeCalledTwiceWithResourcesProvider()
     {
-        return array(
-            'Resource then fetch' => array(true, false),
-            'Resource then resource' => array(true, true),
-        );
+        return [
+            'Resource then fetch' => [true, false],
+            'Resource then resource' => [true, true],
+        ];
     }
 
     /**
@@ -1214,24 +1214,24 @@ public function testGetContentCanBeCalledTwiceWithResources($first, $second)
 
     public function getContentCanBeCalledTwiceWithResourcesProvider()
     {
-        return array(
-            'Fetch then fetch' => array(false, false),
-            'Fetch then resource' => array(false, true),
-            'Resource then fetch' => array(true, false),
-            'Resource then resource' => array(true, true),
-        );
+        return [
+            'Fetch then fetch' => [false, false],
+            'Fetch then resource' => [false, true],
+            'Resource then fetch' => [true, false],
+            'Resource then resource' => [true, true],
+        ];
     }
 
     public function provideOverloadedMethods()
     {
-        return array(
-            array('PUT'),
-            array('DELETE'),
-            array('PATCH'),
-            array('put'),
-            array('delete'),
-            array('patch'),
-        );
+        return [
+            ['PUT'],
+            ['DELETE'],
+            ['PATCH'],
+            ['put'],
+            ['delete'],
+            ['patch'],
+        ];
     }
 
     /**
@@ -1244,14 +1244,14 @@ public function testCreateFromGlobals($method)
         $_GET['foo1'] = 'bar1';
         $_POST['foo2'] = 'bar2';
         $_COOKIE['foo3'] = 'bar3';
-        $_FILES['foo4'] = array('bar4');
+        $_FILES['foo4'] = ['bar4'];
         $_SERVER['foo5'] = 'bar5';
 
         $request = Request::createFromGlobals();
         $this->assertEquals('bar1', $request->query->get('foo1'), '::fromGlobals() uses values from $_GET');
         $this->assertEquals('bar2', $request->request->get('foo2'), '::fromGlobals() uses values from $_POST');
         $this->assertEquals('bar3', $request->cookies->get('foo3'), '::fromGlobals() uses values from $_COOKIE');
-        $this->assertEquals(array('bar4'), $request->files->get('foo4'), '::fromGlobals() uses values from $_FILES');
+        $this->assertEquals(['bar4'], $request->files->get('foo4'), '::fromGlobals() uses values from $_FILES');
         $this->assertEquals('bar5', $request->server->get('foo5'), '::fromGlobals() uses values from $_SERVER');
 
         unset($_GET['foo1'], $_POST['foo2'], $_COOKIE['foo3'], $_FILES['foo4'], $_SERVER['foo5']);
@@ -1281,25 +1281,25 @@ public function testCreateFromGlobals($method)
     public function testOverrideGlobals()
     {
         $request = new Request();
-        $request->initialize(array('foo' => 'bar'));
+        $request->initialize(['foo' => 'bar']);
 
         // as the Request::overrideGlobals really work, it erase $_SERVER, so we must backup it
         $server = $_SERVER;
 
         $request->overrideGlobals();
 
-        $this->assertEquals(array('foo' => 'bar'), $_GET);
+        $this->assertEquals(['foo' => 'bar'], $_GET);
 
-        $request->initialize(array(), array('foo' => 'bar'));
+        $request->initialize([], ['foo' => 'bar']);
         $request->overrideGlobals();
 
-        $this->assertEquals(array('foo' => 'bar'), $_POST);
+        $this->assertEquals(['foo' => 'bar'], $_POST);
 
         $this->assertArrayNotHasKey('HTTP_X_FORWARDED_PROTO', $_SERVER);
 
         $request->headers->set('X_FORWARDED_PROTO', 'https');
 
-        Request::setTrustedProxies(array('1.1.1.1'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['1.1.1.1'], Request::HEADER_X_FORWARDED_ALL);
         $this->assertFalse($request->isSecure());
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $this->assertTrue($request->isSecure());
@@ -1316,12 +1316,12 @@ public function testOverrideGlobals()
         $this->assertArrayHasKey('CONTENT_TYPE', $_SERVER);
         $this->assertArrayHasKey('CONTENT_LENGTH', $_SERVER);
 
-        $request->initialize(array('foo' => 'bar', 'baz' => 'foo'));
+        $request->initialize(['foo' => 'bar', 'baz' => 'foo']);
         $request->query->remove('baz');
 
         $request->overrideGlobals();
 
-        $this->assertEquals(array('foo' => 'bar'), $_GET);
+        $this->assertEquals(['foo' => 'bar'], $_GET);
         $this->assertEquals('foo=bar', $_SERVER['QUERY_STRING']);
         $this->assertEquals('foo=bar', $request->server->get('QUERY_STRING'));
 
@@ -1334,23 +1334,23 @@ public function testGetScriptName()
         $request = new Request();
         $this->assertEquals('', $request->getScriptName());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_NAME'] = '/index.php';
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/index.php', $request->getScriptName());
 
-        $server = array();
+        $server = [];
         $server['ORIG_SCRIPT_NAME'] = '/frontend.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/frontend.php', $request->getScriptName());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_NAME'] = '/index.php';
         $server['ORIG_SCRIPT_NAME'] = '/frontend.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/index.php', $request->getScriptName());
     }
@@ -1360,29 +1360,29 @@ public function testGetBasePath()
         $request = new Request();
         $this->assertEquals('', $request->getBasePath());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
         $this->assertEquals('', $request->getBasePath());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
         $server['SCRIPT_NAME'] = '/index.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('', $request->getBasePath());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
         $server['PHP_SELF'] = '/index.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('', $request->getBasePath());
 
-        $server = array();
+        $server = [];
         $server['SCRIPT_FILENAME'] = '/some/where/index.php';
         $server['ORIG_SCRIPT_NAME'] = '/index.php';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('', $request->getBasePath());
     }
@@ -1392,21 +1392,21 @@ public function testGetPathInfo()
         $request = new Request();
         $this->assertEquals('/', $request->getPathInfo());
 
-        $server = array();
+        $server = [];
         $server['REQUEST_URI'] = '/path/info';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/path/info', $request->getPathInfo());
 
-        $server = array();
+        $server = [];
         $server['REQUEST_URI'] = '/path%20test/info';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/path%20test/info', $request->getPathInfo());
 
-        $server = array();
+        $server = [];
         $server['REQUEST_URI'] = '?a=b';
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         $this->assertEquals('/', $request->getPathInfo());
     }
@@ -1434,27 +1434,27 @@ public function testGetPreferredLanguage()
     {
         $request = new Request();
         $this->assertNull($request->getPreferredLanguage());
-        $this->assertNull($request->getPreferredLanguage(array()));
-        $this->assertEquals('fr', $request->getPreferredLanguage(array('fr')));
-        $this->assertEquals('fr', $request->getPreferredLanguage(array('fr', 'en')));
-        $this->assertEquals('en', $request->getPreferredLanguage(array('en', 'fr')));
-        $this->assertEquals('fr-ch', $request->getPreferredLanguage(array('fr-ch', 'fr-fr')));
+        $this->assertNull($request->getPreferredLanguage([]));
+        $this->assertEquals('fr', $request->getPreferredLanguage(['fr']));
+        $this->assertEquals('fr', $request->getPreferredLanguage(['fr', 'en']));
+        $this->assertEquals('en', $request->getPreferredLanguage(['en', 'fr']));
+        $this->assertEquals('fr-ch', $request->getPreferredLanguage(['fr-ch', 'fr-fr']));
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, en; q=0.6');
-        $this->assertEquals('en', $request->getPreferredLanguage(array('en', 'en-us')));
+        $this->assertEquals('en', $request->getPreferredLanguage(['en', 'en-us']));
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, en; q=0.6');
-        $this->assertEquals('en', $request->getPreferredLanguage(array('fr', 'en')));
+        $this->assertEquals('en', $request->getPreferredLanguage(['fr', 'en']));
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8');
-        $this->assertEquals('en', $request->getPreferredLanguage(array('fr', 'en')));
+        $this->assertEquals('en', $request->getPreferredLanguage(['fr', 'en']));
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, fr-fr; q=0.6, fr; q=0.5');
-        $this->assertEquals('en', $request->getPreferredLanguage(array('fr', 'en')));
+        $this->assertEquals('en', $request->getPreferredLanguage(['fr', 'en']));
     }
 
     public function testIsXmlHttpRequest()
@@ -1492,72 +1492,72 @@ public function testIntlLocale()
     public function testGetCharsets()
     {
         $request = new Request();
-        $this->assertEquals(array(), $request->getCharsets());
+        $this->assertEquals([], $request->getCharsets());
         $request->headers->set('Accept-Charset', 'ISO-8859-1, US-ASCII, UTF-8; q=0.8, ISO-10646-UCS-2; q=0.6');
-        $this->assertEquals(array(), $request->getCharsets()); // testing caching
+        $this->assertEquals([], $request->getCharsets()); // testing caching
 
         $request = new Request();
         $request->headers->set('Accept-Charset', 'ISO-8859-1, US-ASCII, UTF-8; q=0.8, ISO-10646-UCS-2; q=0.6');
-        $this->assertEquals(array('ISO-8859-1', 'US-ASCII', 'UTF-8', 'ISO-10646-UCS-2'), $request->getCharsets());
+        $this->assertEquals(['ISO-8859-1', 'US-ASCII', 'UTF-8', 'ISO-10646-UCS-2'], $request->getCharsets());
 
         $request = new Request();
         $request->headers->set('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.7');
-        $this->assertEquals(array('ISO-8859-1', 'utf-8', '*'), $request->getCharsets());
+        $this->assertEquals(['ISO-8859-1', 'utf-8', '*'], $request->getCharsets());
     }
 
     public function testGetEncodings()
     {
         $request = new Request();
-        $this->assertEquals(array(), $request->getEncodings());
+        $this->assertEquals([], $request->getEncodings());
         $request->headers->set('Accept-Encoding', 'gzip,deflate,sdch');
-        $this->assertEquals(array(), $request->getEncodings()); // testing caching
+        $this->assertEquals([], $request->getEncodings()); // testing caching
 
         $request = new Request();
         $request->headers->set('Accept-Encoding', 'gzip,deflate,sdch');
-        $this->assertEquals(array('gzip', 'deflate', 'sdch'), $request->getEncodings());
+        $this->assertEquals(['gzip', 'deflate', 'sdch'], $request->getEncodings());
 
         $request = new Request();
         $request->headers->set('Accept-Encoding', 'gzip;q=0.4,deflate;q=0.9,compress;q=0.7');
-        $this->assertEquals(array('deflate', 'compress', 'gzip'), $request->getEncodings());
+        $this->assertEquals(['deflate', 'compress', 'gzip'], $request->getEncodings());
     }
 
     public function testGetAcceptableContentTypes()
     {
         $request = new Request();
-        $this->assertEquals(array(), $request->getAcceptableContentTypes());
+        $this->assertEquals([], $request->getAcceptableContentTypes());
         $request->headers->set('Accept', 'application/vnd.wap.wmlscriptc, text/vnd.wap.wml, application/vnd.wap.xhtml+xml, application/xhtml+xml, text/html, multipart/mixed, */*');
-        $this->assertEquals(array(), $request->getAcceptableContentTypes()); // testing caching
+        $this->assertEquals([], $request->getAcceptableContentTypes()); // testing caching
 
         $request = new Request();
         $request->headers->set('Accept', 'application/vnd.wap.wmlscriptc, text/vnd.wap.wml, application/vnd.wap.xhtml+xml, application/xhtml+xml, text/html, multipart/mixed, */*');
-        $this->assertEquals(array('application/vnd.wap.wmlscriptc', 'text/vnd.wap.wml', 'application/vnd.wap.xhtml+xml', 'application/xhtml+xml', 'text/html', 'multipart/mixed', '*/*'), $request->getAcceptableContentTypes());
+        $this->assertEquals(['application/vnd.wap.wmlscriptc', 'text/vnd.wap.wml', 'application/vnd.wap.xhtml+xml', 'application/xhtml+xml', 'text/html', 'multipart/mixed', '*/*'], $request->getAcceptableContentTypes());
     }
 
     public function testGetLanguages()
     {
         $request = new Request();
-        $this->assertEquals(array(), $request->getLanguages());
+        $this->assertEquals([], $request->getLanguages());
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, en; q=0.6');
-        $this->assertEquals(array('zh', 'en_US', 'en'), $request->getLanguages());
-        $this->assertEquals(array('zh', 'en_US', 'en'), $request->getLanguages());
+        $this->assertEquals(['zh', 'en_US', 'en'], $request->getLanguages());
+        $this->assertEquals(['zh', 'en_US', 'en'], $request->getLanguages());
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en-us; q=0.6, en; q=0.8');
-        $this->assertEquals(array('zh', 'en', 'en_US'), $request->getLanguages()); // Test out of order qvalues
+        $this->assertEquals(['zh', 'en', 'en_US'], $request->getLanguages()); // Test out of order qvalues
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, en, en-us');
-        $this->assertEquals(array('zh', 'en', 'en_US'), $request->getLanguages()); // Test equal weighting without qvalues
+        $this->assertEquals(['zh', 'en', 'en_US'], $request->getLanguages()); // Test equal weighting without qvalues
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh; q=0.6, en, en-us; q=0.6');
-        $this->assertEquals(array('en', 'zh', 'en_US'), $request->getLanguages()); // Test equal weighting with qvalues
+        $this->assertEquals(['en', 'zh', 'en_US'], $request->getLanguages()); // Test equal weighting with qvalues
 
         $request = new Request();
         $request->headers->set('Accept-language', 'zh, i-cherokee; q=0.6');
-        $this->assertEquals(array('zh', 'cherokee'), $request->getLanguages());
+        $this->assertEquals(['zh', 'cherokee'], $request->getLanguages());
     }
 
     public function testGetRequestFormat()
@@ -1577,7 +1577,7 @@ public function testGetRequestFormat()
         $this->assertNull($request->setRequestFormat('foo'));
         $this->assertEquals('foo', $request->getRequestFormat(null));
 
-        $request = new Request(array('_format' => 'foo'));
+        $request = new Request(['_format' => 'foo']);
         $this->assertEquals('html', $request->getRequestFormat());
     }
 
@@ -1663,7 +1663,7 @@ public function testIsMethod()
      */
     public function testGetBaseUrl($uri, $server, $expectedBaseUrl, $expectedPathInfo)
     {
-        $request = Request::create($uri, 'GET', array(), array(), array(), $server);
+        $request = Request::create($uri, 'GET', [], [], [], $server);
 
         $this->assertSame($expectedBaseUrl, $request->getBaseUrl(), 'baseUrl');
         $this->assertSame($expectedPathInfo, $request->getPathInfo(), 'pathInfo');
@@ -1671,78 +1671,78 @@ public function testGetBaseUrl($uri, $server, $expectedBaseUrl, $expectedPathInf
 
     public function getBaseUrlData()
     {
-        return array(
-            array(
+        return [
+            [
                 '/fruit/strawberry/1234index.php/blah',
-                array(
+                [
                     'SCRIPT_FILENAME' => 'E:/Sites/cc-new/public_html/fruit/index.php',
                     'SCRIPT_NAME' => '/fruit/index.php',
                     'PHP_SELF' => '/fruit/index.php',
-                ),
+                ],
                 '/fruit',
                 '/strawberry/1234index.php/blah',
-            ),
-            array(
+            ],
+            [
                 '/fruit/strawberry/1234index.php/blah',
-                array(
+                [
                     'SCRIPT_FILENAME' => 'E:/Sites/cc-new/public_html/index.php',
                     'SCRIPT_NAME' => '/index.php',
                     'PHP_SELF' => '/index.php',
-                ),
+                ],
                 '',
                 '/fruit/strawberry/1234index.php/blah',
-            ),
-            array(
+            ],
+            [
                 '/foo%20bar/',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo bar/app.php',
                     'SCRIPT_NAME' => '/foo bar/app.php',
                     'PHP_SELF' => '/foo bar/app.php',
-                ),
+                ],
                 '/foo%20bar',
                 '/',
-            ),
-            array(
+            ],
+            [
                 '/foo%20bar/home',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo bar/app.php',
                     'SCRIPT_NAME' => '/foo bar/app.php',
                     'PHP_SELF' => '/foo bar/app.php',
-                ),
+                ],
                 '/foo%20bar',
                 '/home',
-            ),
-            array(
+            ],
+            [
                 '/foo%20bar/app.php/home',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo bar/app.php',
                     'SCRIPT_NAME' => '/foo bar/app.php',
                     'PHP_SELF' => '/foo bar/app.php',
-                ),
+                ],
                 '/foo%20bar/app.php',
                 '/home',
-            ),
-            array(
+            ],
+            [
                 '/foo%20bar/app.php/home%3Dbaz',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo bar/app.php',
                     'SCRIPT_NAME' => '/foo bar/app.php',
                     'PHP_SELF' => '/foo bar/app.php',
-                ),
+                ],
                 '/foo%20bar/app.php',
                 '/home%3Dbaz',
-            ),
-            array(
+            ],
+            [
                 '/foo/bar+baz',
-                array(
+                [
                     'SCRIPT_FILENAME' => '/home/John Doe/public_html/foo/app.php',
                     'SCRIPT_NAME' => '/foo/app.php',
                     'PHP_SELF' => '/foo/app.php',
-                ),
+                ],
                 '/foo',
                 '/bar+baz',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -1760,16 +1760,16 @@ public function testUrlencodedStringPrefix($string, $prefix, $expect)
 
     public function urlencodedStringPrefixData()
     {
-        return array(
-            array('foo', 'foo', 'foo'),
-            array('fo%6f', 'foo', 'fo%6f'),
-            array('foo/bar', 'foo', 'foo'),
-            array('fo%6f/bar', 'foo', 'fo%6f'),
-            array('f%6f%6f/bar', 'foo', 'f%6f%6f'),
-            array('%66%6F%6F/bar', 'foo', '%66%6F%6F'),
-            array('fo+o/bar', 'fo+o', 'fo+o'),
-            array('fo%2Bo/bar', 'fo+o', 'fo%2Bo'),
-        );
+        return [
+            ['foo', 'foo', 'foo'],
+            ['fo%6f', 'foo', 'fo%6f'],
+            ['foo/bar', 'foo', 'foo'],
+            ['fo%6f/bar', 'foo', 'fo%6f'],
+            ['f%6f%6f/bar', 'foo', 'f%6f%6f'],
+            ['%66%6F%6F/bar', 'foo', '%66%6F%6F'],
+            ['fo+o/bar', 'fo+o', 'fo+o'],
+            ['fo%2Bo/bar', 'fo+o', 'fo%2Bo'],
+        ];
     }
 
     private function disableHttpMethodParameterOverride()
@@ -1784,7 +1784,7 @@ private function getRequestInstanceForClientIpTests($remoteAddr, $httpForwardedF
     {
         $request = new Request();
 
-        $server = array('REMOTE_ADDR' => $remoteAddr);
+        $server = ['REMOTE_ADDR' => $remoteAddr];
         if (null !== $httpForwardedFor) {
             $server['HTTP_X_FORWARDED_FOR'] = $httpForwardedFor;
         }
@@ -1793,7 +1793,7 @@ private function getRequestInstanceForClientIpTests($remoteAddr, $httpForwardedF
             Request::setTrustedProxies($trustedProxies, Request::HEADER_X_FORWARDED_ALL);
         }
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         return $request;
     }
@@ -1802,7 +1802,7 @@ private function getRequestInstanceForClientIpsForwardedTests($remoteAddr, $http
     {
         $request = new Request();
 
-        $server = array('REMOTE_ADDR' => $remoteAddr);
+        $server = ['REMOTE_ADDR' => $remoteAddr];
 
         if (null !== $httpForwarded) {
             $server['HTTP_FORWARDED'] = $httpForwarded;
@@ -1812,7 +1812,7 @@ private function getRequestInstanceForClientIpsForwardedTests($remoteAddr, $http
             Request::setTrustedProxies($trustedProxies, Request::HEADER_FORWARDED);
         }
 
-        $request->initialize(array(), array(), array(), array(), array(), $server);
+        $request->initialize([], [], [], [], [], $server);
 
         return $request;
     }
@@ -1833,35 +1833,35 @@ public function testTrustedProxiesXForwardedFor()
         $this->assertFalse($request->isSecure());
 
         // disabling proxy trusting
-        Request::setTrustedProxies(array(), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies([], Request::HEADER_X_FORWARDED_ALL);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // request is forwarded by a non-trusted proxy
-        Request::setTrustedProxies(array('2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // trusted proxy via setTrustedProxies()
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
         $this->assertEquals('1.1.1.1', $request->getClientIp());
         $this->assertEquals('foo.example.com', $request->getHost());
         $this->assertEquals(443, $request->getPort());
         $this->assertTrue($request->isSecure());
 
         // trusted proxy via setTrustedProxies()
-        Request::setTrustedProxies(array('3.3.3.4', '2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['3.3.3.4', '2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // check various X_FORWARDED_PROTO header values
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_X_FORWARDED_ALL);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_X_FORWARDED_ALL);
         $request->headers->set('X_FORWARDED_PROTO', 'ssl');
         $this->assertTrue($request->isSecure());
 
@@ -1882,35 +1882,35 @@ public function testTrustedProxiesForwarded()
         $this->assertFalse($request->isSecure());
 
         // disabling proxy trusting
-        Request::setTrustedProxies(array(), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies([], Request::HEADER_FORWARDED);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // request is forwarded by a non-trusted proxy
-        Request::setTrustedProxies(array('2.2.2.2'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['2.2.2.2'], Request::HEADER_FORWARDED);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // trusted proxy via setTrustedProxies()
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_FORWARDED);
         $this->assertEquals('1.1.1.1', $request->getClientIp());
         $this->assertEquals('foo.example.com', $request->getHost());
         $this->assertEquals(8080, $request->getPort());
         $this->assertTrue($request->isSecure());
 
         // trusted proxy via setTrustedProxies()
-        Request::setTrustedProxies(array('3.3.3.4', '2.2.2.2'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['3.3.3.4', '2.2.2.2'], Request::HEADER_FORWARDED);
         $this->assertEquals('3.3.3.3', $request->getClientIp());
         $this->assertEquals('example.com', $request->getHost());
         $this->assertEquals(80, $request->getPort());
         $this->assertFalse($request->isSecure());
 
         // check various X_FORWARDED_PROTO header values
-        Request::setTrustedProxies(array('3.3.3.3', '2.2.2.2'), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies(['3.3.3.3', '2.2.2.2'], Request::HEADER_FORWARDED);
         $request->headers->set('FORWARDED', 'proto=ssl');
         $this->assertTrue($request->isSecure());
 
@@ -1930,37 +1930,37 @@ public function testIISRequestUri($headers, $server, $expectedRequestUri)
         $this->assertEquals($expectedRequestUri, $request->getRequestUri(), '->getRequestUri() is correct');
 
         $subRequestUri = '/bar/foo';
-        $subRequest = Request::create($subRequestUri, 'get', array(), array(), array(), $request->server->all());
+        $subRequest = Request::create($subRequestUri, 'get', [], [], [], $request->server->all());
         $this->assertEquals($subRequestUri, $subRequest->getRequestUri(), '->getRequestUri() is correct in sub request');
     }
 
     public function iisRequestUriProvider()
     {
-        return array(
-            array(
-                array(),
-                array(
+        return [
+            [
+                [],
+                [
                     'IIS_WasUrlRewritten' => '1',
                     'UNENCODED_URL' => '/foo/bar',
-                ),
+                ],
                 '/foo/bar',
-            ),
-            array(
-                array(),
-                array(
+            ],
+            [
+                [],
+                [
                     'ORIG_PATH_INFO' => '/foo/bar',
-                ),
+                ],
                 '/foo/bar',
-            ),
-            array(
-                array(),
-                array(
+            ],
+            [
+                [],
+                [
                     'ORIG_PATH_INFO' => '/foo/bar',
                     'QUERY_STRING' => 'foo=bar',
-                ),
+                ],
                 '/foo/bar?foo=bar',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testTrustedHosts()
@@ -1973,7 +1973,7 @@ public function testTrustedHosts()
         $this->assertEquals('evil.com', $request->getHost());
 
         // add a trusted domain and all its subdomains
-        Request::setTrustedHosts(array('^([a-z]{9}\.)?trusted\.com$'));
+        Request::setTrustedHosts(['^([a-z]{9}\.)?trusted\.com$']);
 
         // untrusted host
         $request->headers->set('host', 'evil.com');
@@ -2005,7 +2005,7 @@ public function testTrustedHosts()
 
     public function testSetTrustedHostsDoesNotBreakOnSpecialCharacters()
     {
-        Request::setTrustedHosts(array('localhost(\.local){0,1}#,example.com', 'localhost'));
+        Request::setTrustedHosts(['localhost(\.local){0,1}#,example.com', 'localhost']);
 
         $request = Request::create('/');
         $request->headers->set('host', 'localhost');
@@ -2014,7 +2014,7 @@ public function testSetTrustedHostsDoesNotBreakOnSpecialCharacters()
 
     public function testFactory()
     {
-        Request::setFactory(function (array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null) {
+        Request::setFactory(function (array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null) {
             return new NewRequest();
         });
 
@@ -2063,23 +2063,23 @@ public function testHostValidity($host, $isValid, $expectedHost = null, $expecte
 
     public function getHostValidities()
     {
-        return array(
-            array('.a', false),
-            array('a..', false),
-            array('a.', true),
-            array("\xE9", false),
-            array('[::1]', true),
-            array('[::1]:80', true, '[::1]', 80),
-            array(str_repeat('.', 101), false),
-        );
+        return [
+            ['.a', false],
+            ['a..', false],
+            ['a.', true],
+            ["\xE9", false],
+            ['[::1]', true],
+            ['[::1]:80', true, '[::1]', 80],
+            [str_repeat('.', 101), false],
+        ];
     }
 
     public function getLongHostNames()
     {
-        return array(
-            array('a'.str_repeat('.a', 40000)),
-            array(str_repeat(':', 101)),
-        );
+        return [
+            ['a'.str_repeat('.a', 40000)],
+            [str_repeat(':', 101)],
+        ];
     }
 
     /**
@@ -2094,18 +2094,18 @@ public function testMethodIdempotent($method, $idempotent)
 
     public function methodIdempotentProvider()
     {
-        return array(
-            array('HEAD', true),
-            array('GET', true),
-            array('POST', false),
-            array('PUT', true),
-            array('PATCH', false),
-            array('DELETE', true),
-            array('PURGE', true),
-            array('OPTIONS', true),
-            array('TRACE', true),
-            array('CONNECT', false),
-        );
+        return [
+            ['HEAD', true],
+            ['GET', true],
+            ['POST', false],
+            ['PUT', true],
+            ['PATCH', false],
+            ['DELETE', true],
+            ['PURGE', true],
+            ['OPTIONS', true],
+            ['TRACE', true],
+            ['CONNECT', false],
+        ];
     }
 
     /**
@@ -2120,18 +2120,18 @@ public function testMethodSafe($method, $safe)
 
     public function methodSafeProvider()
     {
-        return array(
-            array('HEAD', true),
-            array('GET', true),
-            array('POST', false),
-            array('PUT', false),
-            array('PATCH', false),
-            array('DELETE', false),
-            array('PURGE', false),
-            array('OPTIONS', true),
-            array('TRACE', true),
-            array('CONNECT', false),
-        );
+        return [
+            ['HEAD', true],
+            ['GET', true],
+            ['POST', false],
+            ['PUT', false],
+            ['PATCH', false],
+            ['DELETE', false],
+            ['PURGE', false],
+            ['OPTIONS', true],
+            ['TRACE', true],
+            ['CONNECT', false],
+        ];
     }
 
     /**
@@ -2156,18 +2156,18 @@ public function testMethodCacheable($method, $cacheable)
 
     public function methodCacheableProvider()
     {
-        return array(
-            array('HEAD', true),
-            array('GET', true),
-            array('POST', false),
-            array('PUT', false),
-            array('PATCH', false),
-            array('DELETE', false),
-            array('PURGE', false),
-            array('OPTIONS', false),
-            array('TRACE', false),
-            array('CONNECT', false),
-        );
+        return [
+            ['HEAD', true],
+            ['GET', true],
+            ['POST', false],
+            ['PUT', false],
+            ['PATCH', false],
+            ['DELETE', false],
+            ['PURGE', false],
+            ['OPTIONS', false],
+            ['TRACE', false],
+            ['CONNECT', false],
+        ];
     }
 
     /**
@@ -2176,7 +2176,7 @@ public function methodCacheableProvider()
     public function testProtocolVersion($serverProtocol, $trustedProxy, $via, $expected)
     {
         if ($trustedProxy) {
-            Request::setTrustedProxies(array('1.1.1.1'), -1);
+            Request::setTrustedProxies(['1.1.1.1'], -1);
         }
 
         $request = new Request();
@@ -2189,41 +2189,41 @@ public function testProtocolVersion($serverProtocol, $trustedProxy, $via, $expec
 
     public function protocolVersionProvider()
     {
-        return array(
-            'untrusted without via' => array('HTTP/2.0', false, '', 'HTTP/2.0'),
-            'untrusted with via' => array('HTTP/2.0', false, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/2.0'),
-            'trusted without via' => array('HTTP/2.0', true, '', 'HTTP/2.0'),
-            'trusted with via' => array('HTTP/2.0', true, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'),
-            'trusted with via and protocol name' => array('HTTP/2.0', true, 'HTTP/1.0 fred, HTTP/1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'),
-            'trusted with broken via' => array('HTTP/2.0', true, 'HTTP/1^0 foo', 'HTTP/2.0'),
-            'trusted with partially-broken via' => array('HTTP/2.0', true, '1.0 fred, foo', 'HTTP/1.0'),
-        );
+        return [
+            'untrusted without via' => ['HTTP/2.0', false, '', 'HTTP/2.0'],
+            'untrusted with via' => ['HTTP/2.0', false, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/2.0'],
+            'trusted without via' => ['HTTP/2.0', true, '', 'HTTP/2.0'],
+            'trusted with via' => ['HTTP/2.0', true, '1.0 fred, 1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'],
+            'trusted with via and protocol name' => ['HTTP/2.0', true, 'HTTP/1.0 fred, HTTP/1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'],
+            'trusted with broken via' => ['HTTP/2.0', true, 'HTTP/1^0 foo', 'HTTP/2.0'],
+            'trusted with partially-broken via' => ['HTTP/2.0', true, '1.0 fred, foo', 'HTTP/1.0'],
+        ];
     }
 
     public function nonstandardRequestsData()
     {
-        return array(
-            array('',  '', '/', 'http://host:8080/', ''),
-            array('/', '', '/', 'http://host:8080/', ''),
+        return [
+            ['',  '', '/', 'http://host:8080/', ''],
+            ['/', '', '/', 'http://host:8080/', ''],
 
-            array('hello/app.php/x',  '', '/x', 'http://host:8080/hello/app.php/x', '/hello', '/hello/app.php'),
-            array('/hello/app.php/x', '', '/x', 'http://host:8080/hello/app.php/x', '/hello', '/hello/app.php'),
+            ['hello/app.php/x',  '', '/x', 'http://host:8080/hello/app.php/x', '/hello', '/hello/app.php'],
+            ['/hello/app.php/x', '', '/x', 'http://host:8080/hello/app.php/x', '/hello', '/hello/app.php'],
 
-            array('',      'a=b', '/', 'http://host:8080/?a=b'),
-            array('?a=b',  'a=b', '/', 'http://host:8080/?a=b'),
-            array('/?a=b', 'a=b', '/', 'http://host:8080/?a=b'),
+            ['',      'a=b', '/', 'http://host:8080/?a=b'],
+            ['?a=b',  'a=b', '/', 'http://host:8080/?a=b'],
+            ['/?a=b', 'a=b', '/', 'http://host:8080/?a=b'],
 
-            array('x',      'a=b', '/x', 'http://host:8080/x?a=b'),
-            array('x?a=b',  'a=b', '/x', 'http://host:8080/x?a=b'),
-            array('/x?a=b', 'a=b', '/x', 'http://host:8080/x?a=b'),
+            ['x',      'a=b', '/x', 'http://host:8080/x?a=b'],
+            ['x?a=b',  'a=b', '/x', 'http://host:8080/x?a=b'],
+            ['/x?a=b', 'a=b', '/x', 'http://host:8080/x?a=b'],
 
-            array('hello/x',  '', '/x', 'http://host:8080/hello/x', '/hello'),
-            array('/hello/x', '', '/x', 'http://host:8080/hello/x', '/hello'),
+            ['hello/x',  '', '/x', 'http://host:8080/hello/x', '/hello'],
+            ['/hello/x', '', '/x', 'http://host:8080/hello/x', '/hello'],
 
-            array('hello/app.php/x',      'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'),
-            array('hello/app.php/x?a=b',  'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'),
-            array('/hello/app.php/x?a=b', 'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'),
-        );
+            ['hello/app.php/x',      'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'],
+            ['hello/app.php/x?a=b',  'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'],
+            ['/hello/app.php/x?a=b', 'a=b', '/x', 'http://host:8080/hello/app.php/x?a=b', '/hello', '/hello/app.php'],
+        ];
     }
 
     /**
@@ -2235,16 +2235,16 @@ public function testNonstandardRequests($requestUri, $queryString, $expectedPath
             $expectedBaseUrl = $expectedBasePath;
         }
 
-        $server = array(
+        $server = [
             'HTTP_HOST' => 'host:8080',
             'SERVER_PORT' => '8080',
             'QUERY_STRING' => $queryString,
             'PHP_SELF' => '/hello/app.php',
             'SCRIPT_FILENAME' => '/some/path/app.php',
             'REQUEST_URI' => $requestUri,
-        );
+        ];
 
-        $request = new Request(array(), array(), array(), array(), array(), $server);
+        $request = new Request([], [], [], [], [], $server);
 
         $this->assertEquals($expectedPathInfo, $request->getPathInfo());
         $this->assertEquals($expectedUri, $request->getUri());
@@ -2257,7 +2257,7 @@ public function testNonstandardRequests($requestUri, $queryString, $expectedPath
 
     public function testTrustedHost()
     {
-        Request::setTrustedProxies(array('1.1.1.1'), -1);
+        Request::setTrustedProxies(['1.1.1.1'], -1);
 
         $request = Request::create('/');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
@@ -2279,7 +2279,7 @@ public function testTrustedHost()
 
     public function testTrustedPort()
     {
-        Request::setTrustedProxies(array('1.1.1.1'), -1);
+        Request::setTrustedProxies(['1.1.1.1'], -1);
 
         $request = Request::create('/');
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
@@ -2309,7 +2309,7 @@ class RequestContentProxy extends Request
 {
     public function getContent($asResource = false)
     {
-        return http_build_query(array('_method' => 'PUT', 'content' => 'mycontent'), '', '&');
+        return http_build_query(['_method' => 'PUT', 'content' => 'mycontent'], '', '&');
     }
 }
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
index e987677d47db..a3d2a3dadbfe 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
@@ -22,7 +22,7 @@ class ResponseHeaderBagTest extends TestCase
 {
     public function testAllPreserveCase()
     {
-        $headers = array(
+        $headers = [
             'fOo' => 'BAR',
             'ETag' => 'xyzzy',
             'Content-MD5' => 'Q2hlY2sgSW50ZWdyaXR5IQ==',
@@ -30,7 +30,7 @@ public function testAllPreserveCase()
             'WWW-Authenticate' => 'Basic realm="WallyWorld"',
             'X-UA-Compatible' => 'IE=edge,chrome=1',
             'X-XSS-Protection' => '1; mode=block',
-        );
+        ];
 
         $bag = new ResponseHeaderBag($headers);
         $allPreservedCase = $bag->allPreserveCase();
@@ -42,45 +42,45 @@ public function testAllPreserveCase()
 
     public function testCacheControlHeader()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
-        $bag = new ResponseHeaderBag(array('Cache-Control' => 'public'));
+        $bag = new ResponseHeaderBag(['Cache-Control' => 'public']);
         $this->assertEquals('public', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('public'));
 
-        $bag = new ResponseHeaderBag(array('ETag' => 'abcde'));
+        $bag = new ResponseHeaderBag(['ETag' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('private'));
         $this->assertTrue($bag->hasCacheControlDirective('must-revalidate'));
         $this->assertFalse($bag->hasCacheControlDirective('max-age'));
 
-        $bag = new ResponseHeaderBag(array('Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT'));
+        $bag = new ResponseHeaderBag(['Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array(
+        $bag = new ResponseHeaderBag([
             'Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT',
             'Cache-Control' => 'max-age=3600',
-        ));
+        ]);
         $this->assertEquals('max-age=3600, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('Last-Modified' => 'abcde'));
+        $bag = new ResponseHeaderBag(['Last-Modified' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('Etag' => 'abcde', 'Last-Modified' => 'abcde'));
+        $bag = new ResponseHeaderBag(['Etag' => 'abcde', 'Last-Modified' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'max-age=100']);
         $this->assertEquals('max-age=100, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 's-maxage=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 's-maxage=100']);
         $this->assertEquals('s-maxage=100', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'private, max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'private, max-age=100']);
         $this->assertEquals('max-age=100, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'public, max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'public, max-age=100']);
         $this->assertEquals('max-age=100, public', $bag->get('Cache-Control'));
 
         $bag = new ResponseHeaderBag();
@@ -88,7 +88,7 @@ public function testCacheControlHeader()
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
         $bag = new ResponseHeaderBag();
-        $bag->set('Cache-Control', array('public', 'must-revalidate'));
+        $bag->set('Cache-Control', ['public', 'must-revalidate']);
         $this->assertCount(1, $bag->get('Cache-Control', null, false));
         $this->assertEquals('must-revalidate, public', $bag->get('Cache-Control'));
 
@@ -101,7 +101,7 @@ public function testCacheControlHeader()
 
     public function testCacheControlClone()
     {
-        $headers = array('foo' => 'bar');
+        $headers = ['foo' => 'bar'];
         $bag1 = new ResponseHeaderBag($headers);
         $bag2 = new ResponseHeaderBag($bag1->allPreserveCase());
         $this->assertEquals($bag1->allPreserveCase(), $bag2->allPreserveCase());
@@ -109,7 +109,7 @@ public function testCacheControlClone()
 
     public function testToStringIncludesCookieHeaders()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $bag->setCookie(new Cookie('foo', 'bar'));
 
         $this->assertSetCookieHeader('foo=bar; path=/; httponly', $bag);
@@ -121,7 +121,7 @@ public function testToStringIncludesCookieHeaders()
 
     public function testClearCookieSecureNotHttpOnly()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
 
         $bag->clearCookie('foo', '/', null, true, false);
 
@@ -130,23 +130,23 @@ public function testClearCookieSecureNotHttpOnly()
 
     public function testReplace()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
-        $bag->replace(array('Cache-Control' => 'public'));
+        $bag->replace(['Cache-Control' => 'public']);
         $this->assertEquals('public', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('public'));
     }
 
     public function testReplaceWithRemove()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
         $bag->remove('Cache-Control');
-        $bag->replace(array());
+        $bag->replace([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
     }
@@ -161,12 +161,12 @@ public function testCookiesWithSameNames()
 
         $this->assertCount(4, $bag->getCookies());
         $this->assertEquals('foo=bar; path=/path/foo; domain=foo.bar; httponly', $bag->get('set-cookie'));
-        $this->assertEquals(array(
+        $this->assertEquals([
             'foo=bar; path=/path/foo; domain=foo.bar; httponly',
             'foo=bar; path=/path/bar; domain=foo.bar; httponly',
             'foo=bar; path=/path/bar; domain=bar.foo; httponly',
             'foo=bar; path=/; httponly',
-        ), $bag->get('set-cookie', null, false));
+        ], $bag->get('set-cookie', null, false));
 
         $this->assertSetCookieHeader('foo=bar; path=/path/foo; domain=foo.bar; httponly', $bag);
         $this->assertSetCookieHeader('foo=bar; path=/path/bar; domain=foo.bar; httponly', $bag);
@@ -228,16 +228,16 @@ public function testSetCookieHeader()
     {
         $bag = new ResponseHeaderBag();
         $bag->set('set-cookie', 'foo=bar');
-        $this->assertEquals(array(new Cookie('foo', 'bar', 0, '/', null, false, false, true)), $bag->getCookies());
+        $this->assertEquals([new Cookie('foo', 'bar', 0, '/', null, false, false, true)], $bag->getCookies());
 
         $bag->set('set-cookie', 'foo2=bar2', false);
-        $this->assertEquals(array(
+        $this->assertEquals([
             new Cookie('foo', 'bar', 0, '/', null, false, false, true),
             new Cookie('foo2', 'bar2', 0, '/', null, false, false, true),
-        ), $bag->getCookies());
+        ], $bag->getCookies());
 
         $bag->remove('set-cookie');
-        $this->assertEquals(array(), $bag->getCookies());
+        $this->assertEquals([], $bag->getCookies());
     }
 
     /**
@@ -280,20 +280,20 @@ public function testToStringDoesntMessUpHeaders()
         (string) $headers;
 
         $allHeaders = $headers->allPreserveCase();
-        $this->assertEquals(array('http://www.symfony.com'), $allHeaders['Location']);
-        $this->assertEquals(array('text/html'), $allHeaders['Content-type']);
+        $this->assertEquals(['http://www.symfony.com'], $allHeaders['Location']);
+        $this->assertEquals(['text/html'], $allHeaders['Content-type']);
     }
 
     public function provideMakeDisposition()
     {
-        return array(
-            array('attachment', 'foo.html', 'foo.html', 'attachment; filename=foo.html'),
-            array('attachment', 'foo.html', '', 'attachment; filename=foo.html'),
-            array('attachment', 'foo bar.html', '', 'attachment; filename="foo bar.html"'),
-            array('attachment', 'foo "bar".html', '', 'attachment; filename="foo \\"bar\\".html"'),
-            array('attachment', 'foo%20bar.html', 'foo bar.html', 'attachment; filename="foo bar.html"; filename*=utf-8\'\'foo%2520bar.html'),
-            array('attachment', 'föö.html', 'foo.html', 'attachment; filename=foo.html; filename*=utf-8\'\'f%C3%B6%C3%B6.html'),
-        );
+        return [
+            ['attachment', 'foo.html', 'foo.html', 'attachment; filename=foo.html'],
+            ['attachment', 'foo.html', '', 'attachment; filename=foo.html'],
+            ['attachment', 'foo bar.html', '', 'attachment; filename="foo bar.html"'],
+            ['attachment', 'foo "bar".html', '', 'attachment; filename="foo \\"bar\\".html"'],
+            ['attachment', 'foo%20bar.html', 'foo bar.html', 'attachment; filename="foo bar.html"; filename*=utf-8\'\'foo%2520bar.html'],
+            ['attachment', 'föö.html', 'foo.html', 'attachment; filename=foo.html; filename*=utf-8\'\'f%C3%B6%C3%B6.html'],
+        ];
     }
 
     /**
@@ -309,14 +309,14 @@ public function testMakeDispositionFail($disposition, $filename)
 
     public function provideMakeDispositionFail()
     {
-        return array(
-            array('attachment', 'foo%20bar.html'),
-            array('attachment', 'foo/bar.html'),
-            array('attachment', '/foo.html'),
-            array('attachment', 'foo\bar.html'),
-            array('attachment', '\foo.html'),
-            array('attachment', 'föö.html'),
-        );
+        return [
+            ['attachment', 'foo%20bar.html'],
+            ['attachment', 'foo/bar.html'],
+            ['attachment', '/foo.html'],
+            ['attachment', 'foo\bar.html'],
+            ['attachment', '\foo.html'],
+            ['attachment', 'föö.html'],
+        ];
     }
 
     public function testDateHeaderAddedOnCreation()
@@ -332,7 +332,7 @@ public function testDateHeaderAddedOnCreation()
     public function testDateHeaderCanBeSetOnCreation()
     {
         $someDate = 'Thu, 23 Mar 2017 09:15:12 GMT';
-        $bag = new ResponseHeaderBag(array('Date' => $someDate));
+        $bag = new ResponseHeaderBag(['Date' => $someDate]);
 
         $this->assertEquals($someDate, $bag->get('Date'));
     }
@@ -340,7 +340,7 @@ public function testDateHeaderCanBeSetOnCreation()
     public function testDateHeaderWillBeRecreatedWhenRemoved()
     {
         $someDate = 'Thu, 23 Mar 2017 09:15:12 GMT';
-        $bag = new ResponseHeaderBag(array('Date' => $someDate));
+        $bag = new ResponseHeaderBag(['Date' => $someDate]);
         $bag->remove('Date');
 
         // a (new) Date header is still present
@@ -351,7 +351,7 @@ public function testDateHeaderWillBeRecreatedWhenRemoved()
     public function testDateHeaderWillBeRecreatedWhenHeadersAreReplaced()
     {
         $bag = new ResponseHeaderBag();
-        $bag->replace(array());
+        $bag->replace([]);
 
         $this->assertTrue($bag->has('Date'));
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractRedisSessionHandlerTestCase.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractRedisSessionHandlerTestCase.php
index a2bf168de444..c0651498f272 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractRedisSessionHandlerTestCase.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/AbstractRedisSessionHandlerTestCase.php
@@ -50,7 +50,7 @@ protected function setUp()
         $this->redisClient = $this->createRedisClient($host);
         $this->storage = new RedisSessionHandler(
             $this->redisClient,
-            array('prefix' => self::PREFIX)
+            ['prefix' => self::PREFIX]
         );
     }
 
@@ -117,7 +117,7 @@ public function testUpdateTimestamp()
         $lowTtl = 10;
 
         $this->redisClient->setex(self::PREFIX.'id', $lowTtl, 'foo');
-        $this->storage->updateTimestamp('id', array());
+        $this->storage->updateTimestamp('id', []);
 
         $this->assertGreaterThan($lowTtl, $this->redisClient->ttl(self::PREFIX.'id'));
     }
@@ -137,9 +137,9 @@ public function testSupportedParam(array $options, bool $supported)
 
     public function getOptionFixtures(): array
     {
-        return array(
-            array(array('prefix' => 'session'), true),
-            array(array('prefix' => 'sfs', 'foo' => 'bar'), false),
-        );
+        return [
+            [['prefix' => 'session'], true],
+            [['prefix' => 'sfs', 'foo' => 'bar'], false],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
index 55a3864a9ff2..84006b5fa51b 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php
@@ -40,14 +40,14 @@ protected function setUp()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $this->options = array(
+        $this->options = [
             'id_field' => '_id',
             'data_field' => 'data',
             'time_field' => 'time',
             'expiry_field' => 'expires_at',
             'database' => 'sf2-test',
             'collection' => 'session-test',
-        );
+        ];
 
         $this->storage = new MongoDbSessionHandler($this->mongo, $this->options);
     }
@@ -57,7 +57,7 @@ protected function setUp()
      */
     public function testConstructorShouldThrowExceptionForMissingOptions()
     {
-        new MongoDbSessionHandler($this->mongo, array());
+        new MongoDbSessionHandler($this->mongo, []);
     }
 
     public function testOpenMethodAlwaysReturnTrue()
@@ -95,11 +95,11 @@ public function testRead()
                 $this->assertInstanceOf(\MongoDB\BSON\UTCDateTime::class, $criteria[$this->options['expiry_field']]['$gte']);
                 $this->assertGreaterThanOrEqual(round((string) $criteria[$this->options['expiry_field']]['$gte'] / 1000), $testTimeout);
 
-                return array(
+                return [
                     $this->options['id_field'] => 'foo',
                     $this->options['expiry_field'] => new \MongoDB\BSON\UTCDateTime(),
                     $this->options['data_field'] => new \MongoDB\BSON\Binary('bar', \MongoDB\BSON\Binary::TYPE_OLD_BINARY),
-                );
+                ];
             }));
 
         $this->assertEquals('bar', $this->storage->read('foo'));
@@ -117,8 +117,8 @@ public function testWrite()
         $collection->expects($this->once())
             ->method('updateOne')
             ->will($this->returnCallback(function ($criteria, $updateData, $options) {
-                $this->assertEquals(array($this->options['id_field'] => 'foo'), $criteria);
-                $this->assertEquals(array('upsert' => true), $options);
+                $this->assertEquals([$this->options['id_field'] => 'foo'], $criteria);
+                $this->assertEquals(['upsert' => true], $options);
 
                 $data = $updateData['$set'];
                 $expectedExpiry = time() + (int) ini_get('session.gc_maxlifetime');
@@ -141,7 +141,7 @@ public function testReplaceSessionData()
             ->with($this->options['database'], $this->options['collection'])
             ->will($this->returnValue($collection));
 
-        $data = array();
+        $data = [];
 
         $collection->expects($this->exactly(2))
             ->method('updateOne')
@@ -166,7 +166,7 @@ public function testDestroy()
 
         $collection->expects($this->once())
             ->method('deleteOne')
-            ->with(array($this->options['id_field'] => 
17AE
'foo'));
+            ->with([$this->options['id_field'] => 'foo']);
 
         $this->assertTrue($this->storage->destroy('foo'));
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PredisClusterSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PredisClusterSessionHandlerTest.php
index 458100101c4a..622b42da1a28 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PredisClusterSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PredisClusterSessionHandlerTest.php
@@ -17,6 +17,6 @@ class PredisClusterSessionHandlerTest extends AbstractRedisSessionHandlerTestCas
 {
     protected function createRedisClient(string $host): Client
     {
-        return new Client(array(array('host' => $host)));
+        return new Client([['host' => $host]]);
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PredisSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PredisSessionHandlerTest.php
index a9db4eb1bfa0..5ecab116f731 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PredisSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PredisSessionHandlerTest.php
@@ -17,6 +17,6 @@ class PredisSessionHandlerTest extends AbstractRedisSessionHandlerTestCase
 {
     protected function createRedisClient(string $host): Client
     {
-        return new Client(array('host' => $host));
+        return new Client(['host' => $host]);
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/RedisArraySessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/RedisArraySessionHandlerTest.php
index d263e18ff782..b03a37236f57 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/RedisArraySessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/RedisArraySessionHandlerTest.php
@@ -15,6 +15,6 @@ class RedisArraySessionHandlerTest extends AbstractRedisSessionHandlerTestCase
 {
     protected function createRedisClient(string $host): \RedisArray
     {
-        return new \RedisArray(array($host));
+        return new \RedisArray([$host]);
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php b/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
index a646119d9904..5061a8d1815e 100644
--- a/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
+++ b/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
@@ -22,7 +22,7 @@ class ChainCacheClearer implements CacheClearerInterface
 {
     private $clearers;
 
-    public function __construct(iterable $clearers = array())
+    public function __construct(iterable $clearers = [])
     {
         $this->clearers = $clearers;
     }
diff --git a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
index 8a57732bf384..a68e0bbdfdbe 100644
--- a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
+++ b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
@@ -24,7 +24,7 @@ class CacheWarmerAggregate implements CacheWarmerInterface
     private $optionalsEnabled = false;
     private $onlyOptionalsEnabled = false;
 
-    public function __construct(iterable $warmers = array())
+    public function __construct(iterable $warmers = [])
     {
         $this->warmers = $warmers;
     }
diff --git a/src/Symfony/Component/HttpKernel/Config/FileLocator.php b/src/Symfony/Component/HttpKernel/Config/FileLocator.php
index 20d91b2f051a..f88d1684fe55 100644
--- a/src/Symfony/Component/HttpKernel/Config/FileLocator.php
+++ b/src/Symfony/Component/HttpKernel/Config/FileLocator.php
@@ -29,7 +29,7 @@ class FileLocator extends BaseFileLocator
      * @param string|null     $path   The path the global resource directory
      * @param array           $paths  An array of paths where to look for resources
      */
-    public function __construct(KernelInterface $kernel, string $path = null, array $paths = array())
+    public function __construct(KernelInterface $kernel, string $path = null, array $paths = [])
     {
         $this->kernel = $kernel;
         if (null !== $path) {
diff --git a/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php b/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php
index 142a6d54a6e5..86ceab2f264c 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php
@@ -34,7 +34,7 @@ final class ArgumentResolver implements ArgumentResolverInterface
      */
     private $argumentValueResolvers;
 
-    public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFactory = null, iterable $argumentValueResolvers = array())
+    public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFactory = null, iterable $argumentValueResolvers = [])
     {
         $this->argumentMetadataFactory = $argumentMetadataFactory ?: new ArgumentMetadataFactory();
         $this->argumentValueResolvers = $argumentValueResolvers ?: self::getDefaultArgumentValueResolvers();
@@ -45,7 +45,7 @@ public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFa
      */
     public function getArguments(Request $request, $controller)
     {
-        $arguments = array();
+        $arguments = [];
 
         foreach ($this->argumentMetadataFactory->createArgumentMetadata($controller) as $metadata) {
             foreach ($this->argumentValueResolvers as $resolver) {
@@ -83,12 +83,12 @@ public function getArguments(Request $request, $controller)
 
     public static function getDefaultArgumentValueResolvers(): iterable
     {
-        return array(
+        return [
             new Reques
F41A
tAttributeValueResolver(),
             new RequestValueResolver(),
             new SessionValueResolver(),
             new DefaultValueResolver(),
             new VariadicValueResolver(),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Controller/ControllerReference.php b/src/Symfony/Component/HttpKernel/Controller/ControllerReference.php
index f424fdc833ab..b4fdadd21e12 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ControllerReference.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ControllerReference.php
@@ -27,15 +27,15 @@
 class ControllerReference
 {
     public $controller;
-    public $attributes = array();
-    public $query = array();
+    public $attributes = [];
+    public $query = [];
 
     /**
      * @param string $controller The controller name
      * @param array  $attributes An array of parameters to add to the Request attributes
      * @param array  $query      An array of parameters to add to the Request query string
      */
-    public function __construct(string $controller, array $attributes = array(), array $query = array())
+    public function __construct(string $controller, array $attributes = [], array $query = [])
     {
         $this->controller = $controller;
         $this->attributes = $attributes;
diff --git a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
index 04c5fcf53df1..2d21fdfb0349 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
@@ -107,7 +107,7 @@ protected function createController($controller)
         list($class, $method) = explode('::', $controller, 2);
 
         try {
-            return array($this->instantiateController($class), $method);
+            return [$this->instantiateController($class), $method];
         } catch (\Error | \LogicException $e) {
             try {
                 if ((new \ReflectionMethod($class, $method))->isStatic()) {
@@ -172,7 +172,7 @@ private function getControllerError($callable)
 
         $collection = $this->getClassMethodsWithoutMagicMethods($controller);
 
-        $alternatives = array();
+        $alternatives = [];
 
         foreach ($collection as $item) {
             $lev = levenshtein($method, $item);
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
index 1ca852553534..c660365f8af4 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
@@ -52,12 +52,12 @@ public function __construct(Stopwatch $stopwatch = null, $fileLinkFormat = null,
         $this->dumper = $dumper;
 
         // All clones share these properties by reference:
-        $this->rootRefs = array(
+        $this->rootRefs = [
             &$this->data,
             &$this->dataCount,
             &$this->isCollected,
             &$this->clonesCount,
-        );
+        ];
 
         $this->sourceContextProvider = $dumper instanceof Connection && isset($dumper->getContextProviders()['source']) ? $dumper->getContextProviders()['source'] : new SourceContextProvider($this->charset);
     }
@@ -110,7 +110,7 @@ public function collect(Request $request, Response $response, \Exception $except
         ) {
             if ($response->headers->has('Content-Type') && false !== strpos($response->headers->get('Content-Type'), 'html')) {
                 $dumper = new HtmlDumper('php://output', $this->charset);
-                $dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+                $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
             } else {
                 $dumper = new CliDumper('php://output', $this->charset);
             }
@@ -126,7 +126,7 @@ public function reset()
         if ($this->stopwatch) {
             $this->stopwatch->reset();
         }
-        $this->data = array();
+        $this->data = [];
         $this->dataCount = 0;
         $this->isCollected = true;
         $this->clonesCount = 0;
@@ -142,7 +142,7 @@ public function serialize()
         $this->data[] = $this->fileLinkFormat;
         $this->data[] = $this->charset;
         $ser = serialize($this->data);
-        $this->data = array();
+        $this->data = [];
         $this->dataCount = 0;
         $this->isCollected = true;
 
@@ -169,11 +169,11 @@ public function getDumps($format, $maxDepthLimit = -1, $maxItemsPerDepth = -1)
 
         if ('html' === $format) {
             $dumper = new HtmlDumper($data, $this->charset);
-            $dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+            $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
         } else {
             throw new \InvalidArgumentException(sprintf('Invalid dump format: %s', $format));
         }
-        $dumps = array();
+        $dumps = [];
 
         foreach ($this->data as $dump) {
             $dumper->dump($dump['data']->withMaxDepth($maxDepthLimit)->withMaxItemsPerDepth($maxItemsPerDepth));
@@ -204,9 +204,9 @@ public function __destruct()
                 --$i;
             }
 
-            if (!\in_array(\PHP_SAPI, array('cli', 'phpdbg'), true) && stripos($h[$i], 'html')) {
+            if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) && stripos($h[$i], 'html')) {
                 $dumper = new HtmlDumper('php://output', $this->charset);
-                $dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+                $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
             } else {
                 $dumper = new CliDumper('php://output', $this->charset);
             }
@@ -216,7 +216,7 @@ public function __destruct()
                 $this->doDump($dumper, $dump['data'], $dump['name'], $dump['file'], $dump['line']);
             }
 
-            $this->data = array();
+            $this->data = [];
             $this->dataCount = 0;
         }
     }
@@ -230,7 +230,7 @@ private function doDump(DataDumperInterface $dumper, $data, $name, $file, $line)
                         $s = $this->style('meta', '%s');
                         $f = strip_tags($this->style('', $file));
                         $name = strip_tags($this->style('', $name));
-                        if ($fmt && $link = \is_string($fmt) ? strtr($fmt, array('%f' => $file, '%l' => $line)) : $fmt->format($file, $line)) {
+                        if ($fmt && $link = \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line)) {
                             $name = sprintf('<a href="%s" title="%s">'.$s.'</a>', strip_tags($this->style('', $link)), $f, $name);
                         } else {
                             $name = sprintf('<abbr title="%s">'.$s.'</abbr>', $f, $name);
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
index f9d5bed130cb..d12a8519e142 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
@@ -36,16 +36,16 @@ public function __construct(EventDispatcherInterface $dispatcher = null)
      */
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
-        $this->data = array(
-            'called_listeners' => array(),
-            'not_called_listeners' => array(),
-            'orphaned_events' => array(),
-        );
+        $this->data = [
+            'called_listeners' => [],
+            'not_called_listeners' => [],
+            'orphaned_events' => [],
+        ];
     }
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
 
         if ($this->dispatcher instanceof TraceableEventDispatcherInterface) {
             $this->dispatcher->reset();
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
index 533d3217b329..2c1785045183 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
@@ -55,7 +55,7 @@ public function reset()
         if ($this->logger instanceof DebugLoggerInterface) {
             $this->logger->clear();
         }
-        $this->data = array();
+        $this->data = [];
     }
 
     /**
@@ -80,12 +80,12 @@ public function lateCollect()
      */
     public function getLogs()
     {
-        return isset($this->data['logs']) ? $this->data['logs'] : array();
+        return isset($this->data['logs']) ? $this->data['logs'] : [];
     }
 
     public function getPriorities()
     {
-        return isset($this->data['priorities']) ? $this->data['priorities'] : array();
+        return isset($this->data['priorities']) ? $this->data['priorities'] : [];
     }
 
     public function countErrors()
@@ -110,7 +110,7 @@ public function countScreams()
 
     public function getCompilerLogs()
     {
-        return isset($this->data['compiler_logs']) ? $this->data['compiler_logs'] : array();
+        return isset($this->data['compiler_logs']) ? $this->data['compiler_logs'] : [];
     }
 
     /**
@@ -124,13 +124,13 @@ public function getName()
     private function getContainerDeprecationLogs()
     {
         if (null === $this->containerPathPrefix || !file_exists($file = $this->containerPathPrefix.'Deprecations.log')) {
-            return array();
+            return [];
         }
 
         $bootTime = filemtime($file);
-        $logs = array();
+        $logs = [];
         foreach (unserialize(file_get_contents($file)) as $log) {
-            $log['context'] = array('exception' => new SilencedErrorContext($log['type'], $log['file'], $log['line'], $log['trace'], $log['count']));
+            $log['context'] = ['exception' => new SilencedErrorContext($log['type'], $log['file'], $log['line'], $log['trace'], $log['count'])];
             $log['timestamp'] = $bootTime;
             $log['priority'] = 100;
             $log['priorityName'] = 'DEBUG';
@@ -146,17 +146,17 @@ private function getContainerDeprecationLogs()
     private function getContainerCompilerLogs()
     {
         if (null === $this->containerPathPrefix || !file_exists($file = $this->containerPathPrefix.'Compiler.log')) {
-            return array();
+            return [];
         }
 
-        $logs = array();
+        $logs = [];
         foreach (file($file, FILE_IGNORE_NEW_LINES) as $log) {
             $log = explode(': ', $log, 2);
             if (!isset($log[1]) || !preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+(?:\\\\[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+)++$/', $log[0])) {
-                $log = array('Unknown Compiler Pass', implode(': ', $log));
+                $log = ['Unknown Compiler Pass', implode(': ', $log)];
             }
 
-            $logs[$log[0]][] = array('message' => $log[1]);
+            $logs[$log[0]][] = ['message' => $log[1]];
         }
 
         return $logs;
@@ -164,8 +164,8 @@ private function getContainerCompilerLogs()
 
     private function sanitizeLogs($logs)
     {
-        $sanitizedLogs = array();
-        $silencedLogs = array();
+        $sanitizedLogs = [];
+        $silencedLogs = [];
 
         foreach ($logs as $log) {
             if (!$this->isSilencedOrDeprecationErrorLog($log)) {
@@ -184,10 +184,10 @@ private function sanitizeLogs($logs)
                 $silencedLogs[$h] = true;
 
                 if (!isset($sanitizedLogs[$message])) {
-                    $sanitizedLogs[$message] = $log + array(
+                    $sanitizedLogs[$message] = $log + [
                         'errorCount' => 0,
                         'scream' => true,
-                    );
+                    ];
                 }
                 $sanitizedLogs[$message]['errorCount'] += $exception->count;
 
@@ -199,10 +199,10 @@ private function sanitizeLogs($logs)
             if (isset($sanitizedLogs[$errorId])) {
                 ++$sanitizedLogs[$errorId]['errorCount'];
             } else {
-                $log += array(
+                $log += [
                     'errorCount' => 1,
                     'scream' => false,
-                );
+                ];
 
                 $sanitizedLogs[$errorId] = $log;
             }
@@ -223,7 +223,7 @@ private function isSilencedOrDeprecationErrorLog(array $log)
             return true;
         }
 
-        if ($exception instanceof \ErrorException && \in_array($exception->getSeverity(), array(E_DEPRECATED, E_USER_DEPRECATED), true)) {
+        if ($exception instanceof \ErrorException && \in_array($exception->getSeverity(), [E_DEPRECATED, E_USER_DEPRECATED], true)) {
             return true;
         }
 
@@ -232,23 +232,23 @@ private function isSilencedOrDeprecationErrorLog(array $log)
 
     private function computeErrorsCount(array $containerDeprecationLogs)
     {
-        $silencedLogs = array();
-        $count = array(
+        $silencedLogs = [];
+        $count = [
             'error_count' => $this->logger->countErrors($this->currentRequest),
             'deprecation_count' => 0,
             'warning_count' => 0,
             'scream_count' => 0,
-            'priorities' => array(),
-        );
+            'priorities' => [],
+        ];
 
         foreach ($this->logger->getLogs($this->currentRequest) as $log) {
             if (isset($count['priorities'][$log['priority']])) {
                 ++$count['priorities'][$log['priority']]['count'];
             } else {
-                $count['priorities'][$log['priority']] = array(
+                $count['priorities'][$log['priority']] = [
                     'count' => 1,
                     'name' => $log['priorityName'],
-                );
+                ];
             }
             if ('WARNING' === $log['priorityName']) {
                 ++$count['warning_count'];
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
index 913c07f50c0b..c127b2d877b7 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
@@ -38,7 +38,7 @@ public function __construct()
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
         // attributes are serialized and as they can be anything, they need to be converted to strings.
-        $attributes = array();
+        $attributes = [];
         $route = '';
         foreach ($request->attributes->all() as $key => $value) {
             if ('_route' === $key) {
@@ -57,10 +57,10 @@ public function collect(Request $request, Response $response, \Exception $except
             $content = false;
         }
 
-        $sessionMetadata = array();
-        $sessionAttributes = array();
+        $sessionMetadata = [];
+        $sessionAttributes = [];
         $session = null;
-        $flashes = array();
+        $flashes = [];
         if ($request->hasSession()) {
             $session = $request->getSession();
             if ($session->isStarted()) {
@@ -74,19 +74,19 @@ public function collect(Request $request, Response $response, \Exception $except
 
         $statusCode = $response->getStatusCode();
 
-        $responseCookies = array();
+        $responseCookies = [];
         foreach ($response->headers->getCookies() as $cookie) {
             $responseCookies[$cookie->getName()] = $cookie;
         }
 
-        $dotenvVars = array();
+        $dotenvVars = [];
         foreach (explode(',', getenv('SYMFONY_DOTENV_VARS')) as $name) {
             if ('' !== $name && false !== $value = getenv($name)) {
                 $dotenvVars[$name] = $value;
             }
         }
 
-        $this->data = array(
+        $this->data = [
             'method' => $request->getMethod(),
             'format' => $request->getRequestFormat(),
             'content' => $content,
@@ -109,7 +109,7 @@ public function collect(Request $request, Response $response, \Exception $except
             'controller' => 'n/a',
             'locale' => $request->getLocale(),
             'dotenv_vars' => $dotenvVars,
-        );
+        ];
 
         if (isset($this->data['request_headers']['php-auth-pw'])) {
             $this->data['request_headers']['php-auth-pw'] = '******';
@@ -146,14 +146,14 @@ public function collect(Request $request, Response $response, \Exception $except
         if ($response->isRedirect()) {
             $response->headers->setCookie(new Cookie(
                 'sf_redirect',
-                json_encode(array(
+                json_encode([
                     'token' => $response->headers->get('x-debug-token'),
                     'route' => $request->attributes->get('_route', 'n/a'),
                     'method' => $request->getMethod(),
                     'controller' => $this->parseController($request->attributes->get('_controller')),
                     'status_code' => $statusCode,
                     'status_text' => Response::$statusTexts[(int) $statusCode],
-                ))
+                ])
             ));
         }
 
@@ -171,7 +171,7 @@ public function lateCollect()
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
         $this->controllers = new \SplObjectStorage();
     }
 
@@ -301,7 +301,7 @@ public function getIdentifier()
      */
     public function getRouteParams()
     {
-        return isset($this->data['request_attributes']['_route_params']) ? $this->data['request_attributes']['_route_params']->getValue() : array();
+        return isset($this->data['request_attributes']['_route_params']) ? $this->data['request_attributes']['_route_params']->getValue() : [];
     }
 
     /**
@@ -349,10 +349,10 @@ public function onKernelResponse(FilterResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             KernelEvents::CONTROLLER => 'onKernelController',
             KernelEvents::RESPONSE => 'onKernelResponse',
-        );
+        ];
     }
 
     /**
@@ -380,21 +380,21 @@ protected function parseController($controller)
             try {
                 $r = new \ReflectionMethod($controller[0], $controller[1]);
 
-                return array(
+                return [
                     'class' => \is_object($controller[0]) ? \get_class($controller[0]) : $controller[0],
                     'method' => $controller[1],
                     'file' => $r->getFileName(),
                     'line' => $r->getStartLine(),
-                );
+                ];
             } catch (\ReflectionException $e) {
                 if (\is_callable($controller)) {
                     // using __call or  __callStatic
-                    return array(
+                    return [
                         'class' => \is_object($controller[0]) ? \get_class($controller[0]) : $controller[0],
                         'method' => $controller[1],
                         'file' => 'n/a',
                         'line' => 'n/a',
-                    );
+                    ];
                 }
             }
         }
@@ -402,12 +402,12 @@ protected function parseController($controller)
         if ($controller instanceof \Closure) {
             $r = new \ReflectionFunction($controller);
 
-            $controller = array(
+            $controller = [
                 'class' => $r->getName(),
                 'method' => null,
                 'file' => $r->getFileName(),
                 'line' => $r->getStartLine(),
-            );
+            ];
 
             if (false !== strpos($r->name, '{closure}')) {
                 return $controller;
@@ -426,12 +426,12 @@ protected function parseController($controller)
         if (\is_object($controller)) {
             $r = new \ReflectionClass($controller);
 
-            return array(
+            return [
                 'class' => $r->getName(),
                 'method' => null,
                 'file' => $r->getFileName(),
                 'line' => $r->getStartLine(),
-            );
+            ];
         }
 
         return \is_string($controller) ? $controller : 'n/a';
diff --git a/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php b/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
index 221d33473ef3..f6a2b9dc7a63 100644
--- a/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
+++ b/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
@@ -36,7 +36,7 @@ public function __construct($fileLinkFormat = null, RequestStack $requestStack =
         $fileLinkFormat = $fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format');
         if ($fileLinkFormat && !\is_array($fileLinkFormat)) {
             $i = strpos($f = $fileLinkFormat, '&', max(strrpos($f, '%f'), strrpos($f, '%l'))) ?: \strlen($f);
-            $fileLinkFormat = array(substr($f, 0, $i)) + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);
+            $fileLinkFormat = [substr($f, 0, $i)] + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);
         }
 
         $this->fileLinkFormat = $fileLinkFormat;
@@ -55,7 +55,7 @@ public function format($file, $line)
                 }
             }
 
-            return strtr($fmt[0], array('%f' => $file, '%l' => $line));
+            return strtr($fmt[0], ['%f' => $file, '%l' => $line]);
         }
 
         return false;
@@ -68,7 +68,7 @@ public function serialize()
 
     public function unserialize($serialized)
     {
-        $this->fileLinkFormat = unserialize($serialized, array('allowed_classes' => false));
+        $this->fileLinkFormat = unserialize($serialized, ['allowed_classes' => false]);
     }
 
     /**
@@ -95,10 +95,10 @@ private function getFileLinkFormat()
                     return;
                 }
 
-                return array(
+                return [
                     $request->getSchemeAndHttpHost().$request->getBasePath().$this->urlFormat,
                     $this->baseDir.\DIRECTORY_SEPARATOR, '',
-                );
+                ];
             }
         }
     }
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/AddAnnotatedClassesToCachePass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/AddAnnotatedClassesToCachePass.php
index 783e6fbbe643..2659d34de649 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/AddAnnotatedClassesToCachePass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/AddAnnotatedClassesToCachePass.php
@@ -59,7 +59,7 @@ public function process(ContainerBuilder $container)
      */
     private function expandClasses(array $patterns, array $classes)
     {
-        $expanded = array();
+        $expanded = [];
 
         // Explicit classes declared in the patterns are returned directly
         foreach ($patterns as $key => $pattern) {
@@ -85,7 +85,7 @@ private function expandClasses(array $patterns, array $classes)
 
     private function getClassesInComposerClassMaps()
     {
-        $classes = array();
+        $classes = [];
 
         foreach (spl_autoload_functions() as $function) {
             if (!\is_array($function)) {
@@ -106,14 +106,14 @@ private function getClassesInComposerClassMaps()
 
     private function patternsToRegexps($patterns)
     {
-        $regexps = array();
+        $regexps = [];
 
         foreach ($patterns as $pattern) {
             // Escape user input
             $regex = preg_quote(ltrim($pattern, '\\'));
 
             // Wildcards * and **
-            $regex = strtr($regex, array('\\*\\*' => '.*?', '\\*' => '[^\\\\]*?'));
+            $regex = strtr($regex, ['\\*\\*' => '.*?', '\\*' => '[^\\\\]*?']);
 
             // If this class does not end by a slash, anchor the end
             if ('\\' !== substr($regex, -1)) {
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/ControllerArgumentValueResolverPass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/ControllerArgumentValueResolverPass.php
index 77c0e479ae0a..705c88dbfaff 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/ControllerArgumentValueResolverPass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/ControllerArgumentValueResolverPass.php
@@ -52,7 +52,7 @@ public function process(ContainerBuilder $container)
                 $id = (string) $resolverReference;
                 $container->register("debug.$id", TraceableValueResolver::class)
                     ->setDecoratedService($id)
-                    ->setArguments(array(new Reference("debug.$id.inner"), new Reference($this->traceableResolverStopwatch)));
+                    ->setArguments([new Reference("debug.$id.inner"), new Reference($this->traceableResolverStopwatch)]);
             }
         }
 
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php b/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
index 647875554b00..db376e6d9fb9 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
@@ -20,7 +20,7 @@
  */
 abstract class Extension extends BaseExtension
 {
-    private $annotatedClasses = array();
+    private $annotatedClasses = [];
 
     /**
      * Gets the annotated classes to cache.
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php b/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
index 4bb47902b505..526c11faacda 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
@@ -23,19 +23,19 @@
 class LazyLoadingFragmentHandler extends FragmentHandler
 {
     private $container;
-    private $initialized = array();
+    private $initialized = [];
 
     public function __construct(ContainerInterface $container, RequestStack $requestStack, bool $debug = false)
     {
         $this->container = $container;
 
-        parent::__construct($requestStack, array(), $debug);
+        parent::__construct($requestStack, [], $debug);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function render($uri, $renderer = 'inline', array $options = array())
+    public function render($uri, $renderer = 'inline', array $options = [])
     {
         if (!isset($this->initialized[$renderer]) && $this->container->has($renderer)) {
             $this->addRenderer($this->container->get($renderer));
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
index 06adfe4a2d14..7b3713b30b31 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/RegisterControllerArgumentLocatorsPass.php
@@ -49,7 +49,7 @@ public function process(ContainerBuilder $container)
         }
 
         $parameterBag = $container->getParameterBag();
-        $controllers = array();
+        $controllers = [];
 
         foreach ($container->findTaggedServiceIds($this->controllerTag, true) as $id => $tags) {
             $def = $container->getDefinition($id);
@@ -72,14 +72,14 @@ public function process(ContainerBuilder $container)
             $isContainerAware = $r->implementsInterface(ContainerAwareInterface::class) || is_subclass_of($class, AbstractController::class);
 
             // get regular public methods
-            $methods = array();
-            $arguments = array();
+            $methods = [];
+            $arguments = [];
             foreach ($r->getMethods(\ReflectionMethod::IS_PUBLIC) as $r) {
                 if ('setContainer' === $r->name && $isContainerAware) {
                     continue;
                 }
                 if (!$r->isConstructor() && !$r->isDestructor() && !$r->isAbstract()) {
-                    $methods[strtolower($r->name)] = array($r, $r->getParameters());
+                    $methods[strtolower($r->name)] = [$r, $r->getParameters()];
                 }
             }
 
@@ -89,7 +89,7 @@ public function process(ContainerBuilder $container)
                     $autowire = true;
                     continue;
                 }
-                foreach (array('action', 'argument', 'id') as $k) {
+                foreach (['action', 'argument', 'id'] as $k) {
                     if (!isset($attributes[$k][0])) {
                         throw new InvalidArgumentException(sprintf('Missing "%s" attribute on tag "%s" %s for service "%s".', $k, $this->controllerTag, json_encode($attributes, JSON_UNESCAPED_UNICODE), $id));
                     }
@@ -119,7 +119,7 @@ public function process(ContainerBuilder $container)
                 /** @var \ReflectionMethod $r */
 
                 // create a per-method map of argument-names to service/type-references
-                $args = array();
+                $args = [];
                 foreach ($parameters as $p) {
                     /** @var \ReflectionParameter $p */
                     $type = $target = ProxyHelper::getTypeHint($r, $p, true);
@@ -138,13 +138,13 @@ public function process(ContainerBuilder $container)
                         $binding = $bindings[$bindingName];
 
                         list($bindingValue, $bindingId) = $binding->getValues();
-                        $binding->setValues(array($bindingValue, $bindingId, true));
+                        $binding->setValues([$bindingValue, $bindingId, true]);
 
                         if (!$bindingValue instanceof Reference) {
                             $args[$p->name] = new Reference('.value.'.$container->hash($bindingValue));
                             $container->register((string) $args[$p->name], 'mixed')
                                 ->setFactory('current')
-                                ->addArgument(array($bindingValue));
+                                ->addArgument([$bindingValue]);
                         } else {
                             $args[$p->name] = $bindingValue;
                         }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/AbstractSessionListener.php b/src/Symfony/Component/HttpKernel/EventListener/AbstractSessionListener.php
index c7c171706997..80d57e506a2b 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/AbstractSessionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/AbstractSessionListener.php
@@ -38,7 +38,7 @@ abstract class AbstractSessionListener implements EventSubscriberInterface
     const NO_AUTO_CACHE_CONTROL_HEADER = 'Symfony-Session-NoAutoCacheControl';
 
     protected $container;
-    private $sessionUsageStack = array();
+    private $sessionUsageStack = [];
 
     public function __construct(ContainerInterface $container = null)
     {
@@ -131,12 +131,12 @@ public function onFinishRequest(FinishRequestEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::REQUEST => array('onKernelRequest', 128),
+        return [
+            KernelEvents::REQUEST => ['onKernelRequest', 128],
             // low priority to come after regular response listeners, but higher than StreamedResponseListener
-            KernelEvents::RESPONSE => array('onKernelResponse', -1000),
-            KernelEvents::FINISH_REQUEST => array('onFinishRequest'),
-        );
+            KernelEvents::RESPONSE => ['onKernelResponse', -1000],
+            KernelEvents::FINISH_REQUEST => ['onFinishRequest'],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php b/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
index 54c4f4697d42..6849bfa791f8 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
@@ -87,12 +87,12 @@ public function onKernelException(GetResponseForExceptionEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::EXCEPTION => array(
-                array('logKernelException', 0),
-                array('onKernelException', -128),
-            ),
-        );
+        return [
+            KernelEvents::EXCEPTION => [
+                ['logKernelException', 0],
+                ['onKernelException', -128],
+            ],
+        ];
     }
 
     /**
@@ -105,9 +105,9 @@ protected function logException(\Exception $exception, $message)
     {
         if (null !== $this->logger) {
             if (!$exception instanceof HttpExceptionInterface || $exception->getStatusCode() >= 500) {
-                $this->logger->critical($message, array('exception' => $exception));
+                $this->logger->critical($message, ['exception' => $exception]);
             } else {
-                $this->logger->error($message, array('exception' => $exception));
+                $this->logger->error($message, ['exception' => $exception]);
             }
         }
     }
@@ -122,11 +122,11 @@ protected function logException(\Exception $exception, $message)
      */
     protected function duplicateRequest(\Exception $exception, Request $request)
     {
-        $attributes = array(
+        $attributes = [
             '_controller' => $this->controller,
             'exception' => FlattenException::create($exception),
             'logger' => $this->logger instanceof DebugLoggerInterface ? $this->logger : null,
-        );
+        ];
         $request = $request->duplicate(null, null, $attributes);
         $request->setMethod('GET');
 
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ProfilerListener.php b/src/Symfony/Component/HttpKernel/EventListener/ProfilerListener.php
index 03344be7a6e9..df0e5cf8a68f 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ProfilerListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ProfilerListener.php
@@ -119,10 +119,10 @@ public function onKernelTerminate(PostResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::RESPONSE => array('onKernelResponse', -100),
-            KernelEvents::EXCEPTION => array('onKernelException', 0),
-            KernelEvents::TERMINATE => array('onKernelTerminate', -1024),
-        );
+        return [
+            KernelEvents::RESPONSE => ['onKernelResponse', -100],
+            KernelEvents::EXCEPTION => ['onKernelException', 0],
+            KernelEvents::TERMINATE => ['onKernelTerminate', -1024],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Exception/AccessDeniedHttpException.php b/src/Symfony/Component/HttpKernel/Exception/AccessDeniedHttpException.php
index 3aedbf97fec3..f6f4ff53f06e 100644
--- a/src/Symfony/Component/HttpKernel/Exception/AccessDeniedHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/AccessDeniedHttpException.php
@@ -23,7 +23,7 @@ class AccessDeniedHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(403, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/BadRequestHttpException.php b/src/Symfony/Component/HttpKernel/Exception/BadRequestHttpException.php
index ff215db45f7d..4b25adcba3bb 100644
--- a/src/Symfony/Component/HttpKernel/Exception/BadRequestHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/BadRequestHttpException.php
@@ -22,7 +22,7 @@ class BadRequestHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(400, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/ConflictHttpException.php b/src/Symfony/Component/HttpKernel/Exception/ConflictHttpException.php
index 60195daf7b09..6c8a1b3c537b 100644
--- a/src/Symfony/Component/HttpKernel/Exception/ConflictHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/ConflictHttpException.php
@@ -22,7 +22,7 @@ class ConflictHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(409, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/GoneHttpException.php b/src/Symfony/Component/HttpKernel/Exception/GoneHttpException.php
index f2f3515f77ab..de0d5f2c2c4d 100644
--- a/src/Symfony/Component/HttpKernel/Exception/GoneHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/GoneHttpException.php
@@ -22,7 +22,7 @@ class GoneHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(410, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/HttpException.php b/src/Symfony/Component/HttpKernel/Exception/HttpException.php
index dab73120d096..3acb52ac3586 100644
--- a/src/Symfony/Component/HttpKernel/Exception/HttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/HttpException.php
@@ -21,7 +21,7 @@ class HttpException extends \RuntimeException implements HttpExceptionInterface
     private $statusCode;
     private $headers;
 
-    public function __construct(int $statusCode, string $message = null, \Exception $previous = null, array $headers = array(), ?int $code = 0)
+    public function __construct(int $statusCode, string $message = null, \Exception $previous = null, array $headers = [], ?int $code = 0)
     {
         $this->statusCode = $statusCode;
         $this->headers = $headers;
diff --git a/src/Symfony/Component/HttpKernel/Exception/LengthRequiredHttpException.php b/src/Symfony/Component/HttpKernel/Exception/LengthRequiredHttpException.php
index 46b76ba6a319..287c07a0c1a0 100644
--- a/src/Symfony/Component/HttpKernel/Exception/LengthRequiredHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/LengthRequiredHttpException.php
@@ -22,7 +22,7 @@ class LengthRequiredHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(411, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/MethodNotAllowedHttpException.php b/src/Symfony/Component/HttpKernel/Exception/MethodNotAllowedHttpException.php
index b0085c16fa0e..e9a3f069f1c1 100644
--- a/src/Symfony/Component/HttpKernel/Exception/MethodNotAllowedHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/MethodNotAllowedHttpException.php
@@ -23,7 +23,7 @@ class MethodNotAllowedHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(array $allow, string $message = null, \Exception $previous = null, ?int $code = 0, array $headers = array())
+    public function __construct(array $allow, string $message = null, \Exception $previous = null, ?int $code = 0, array $headers = [])
     {
         $headers['Allow'] = strtoupper(implode(', ', $allow));
 
diff --git a/src/Symfony/Component/HttpKernel/Exception/NotAcceptableHttpException.php b/src/Symfony/Component/HttpKernel/Exception/NotAcceptableHttpException.php
index 32c3089374bc..5596330881b2 100644
--- a/src/Symfony/Component/HttpKernel/Exception/NotAcceptableHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/NotAcceptableHttpException.php
@@ -22,7 +22,7 @@ class NotAcceptableHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(406, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/NotFoundHttpException.php b/src/Symfony/Component/HttpKernel/Exception/NotFoundHttpException.php
index 433ff9b9e0d6..551b3edc59f4 100644
--- a/src/Symfony/Component/HttpKernel/Exception/NotFoundHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/NotFoundHttpException.php
@@ -22,7 +22,7 @@ class NotFoundHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(404, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/PreconditionFailedHttpException.php b/src/Symfony/Component/HttpKernel/Exception/PreconditionFailedHttpException.php
index 108178889cb0..c1a59fb8df47 100644
--- a/src/Symfony/Component/HttpKernel/Exception/PreconditionFailedHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/PreconditionFailedHttpException.php
@@ -22,7 +22,7 @@ class PreconditionFailedHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(412, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php b/src/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php
index 30783282410f..fd95b042c5c5 100644
--- a/src/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/PreconditionRequiredHttpException.php
@@ -24,7 +24,7 @@ class PreconditionRequiredHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(428, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/ServiceUnavailableHttpException.php b/src/Symfony/Component/HttpKernel/Exception/ServiceUnavailableHttpException.php
index 667764779f8e..18b12d83cc69 100644
--- a/src/Symfony/Component/HttpKernel/Exception/ServiceUnavailableHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/ServiceUnavailableHttpException.php
@@ -23,7 +23,7 @@ class ServiceUnavailableHttpException extends HttpException
      * @param int        $code       The internal exception code
      * @param array      $headers
      */
-    public function __construct($retryAfter = null, string $message = null, \Exception $previous = null, ?int $code = 0, array $headers = array())
+    public function __construct($retryAfter = null, string $message = null, \Exception $previous = null, ?int $code = 0, array $headers = [])
     {
         if ($retryAfter) {
             $headers['Retry-After'] = $retryAfter;
diff --git a/src/Symfony/Component/HttpKernel/Exception/TooManyRequestsHttpException.php b/src/Symfony/Component/HttpKernel/Exception/TooManyRequestsHttpException.php
index 60b024c33017..91e65e2d7003 100644
--- a/src/Symfony/Component/HttpKernel/Exception/TooManyRequestsHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/TooManyRequestsHttpException.php
@@ -25,7 +25,7 @@ class TooManyRequestsHttpException extends HttpException
      * @param int        $code       The internal exception code
      * @param array      $headers
      */
-    public function __construct($retryAfter = null, string $message = null, \Exception $previous = null, ?int $code = 0, array $headers = array())
+    public function __construct($retryAfter = null, string $message = null, \Exception $previous = null, ?int $code = 0, array $headers = [])
     {
         if ($retryAfter) {
             $headers['Retry-After'] = $retryAfter;
diff --git a/src/Symfony/Component/HttpKernel/Exception/UnauthorizedHttpException.php b/src/Symfony/Component/HttpKernel/Exception/UnauthorizedHttpException.php
index 17ebb254640b..bc42877fe877 100644
--- a/src/Symfony/Component/HttpKernel/Exception/UnauthorizedHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/UnauthorizedHttpException.php
@@ -23,7 +23,7 @@ class UnauthorizedHttpException extends HttpException
      * @param int        $code      The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $challenge, string $message = null, \Exception $previous = null, ?int $code = 0, array $headers = array())
+    public function __construct(string $challenge, string $message = null, \Exception $previous = null, ?int $code = 0, array $headers = [])
     {
         $headers['WWW-Authenticate'] = $challenge;
 
diff --git a/src/Symfony/Component/HttpKernel/Exception/UnprocessableEntityHttpException.php b/src/Symfony/Component/HttpKernel/Exception/UnprocessableEntityHttpException.php
index 3a4b40c98457..9cad444c6c1d 100644
--- a/src/Symfony/Component/HttpKernel/Exception/UnprocessableEntityHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/UnprocessableEntityHttpException.php
@@ -22,7 +22,7 @@ class UnprocessableEntityHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(422, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Exception/UnsupportedMediaTypeHttpException.php b/src/Symfony/Component/HttpKernel/Exception/UnsupportedMediaTypeHttpException.php
index ed6861154ada..e52e1d88d2a9 100644
--- a/src/Symfony/Component/HttpKernel/Exception/UnsupportedMediaTypeHttpException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/UnsupportedMediaTypeHttpException.php
@@ -22,7 +22,7 @@ class UnsupportedMediaTypeHttpException extends HttpException
      * @param int        $code     The internal exception code
      * @param array      $headers
      */
-    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = array())
+    public function __construct(string $message = null, \Exception $previous = null, int $code = 0, array $headers = [])
     {
         parent::__construct(415, $message, $previous, $headers, $code);
     }
diff --git a/src/Symfony/Component/HttpKernel/Fragment/FragmentHandler.php b/src/Symfony/Component/HttpKernel/Fragment/FragmentHandler.php
index 0c31826b27a0..758f0e8fc1c1 100644
--- a/src/Symfony/Component/HttpKernel/Fragment/FragmentHandler.php
+++ b/src/Symfony/Component/HttpKernel/Fragment/FragmentHandler.php
@@ -29,7 +29,7 @@
 class FragmentHandler
 {
     private $debug;
-    private $renderers = array();
+    private $renderers = [];
     private $requestStack;
 
     /**
@@ -37,7 +37,7 @@ class FragmentHandler
      * @param FragmentRendererInterface[] $renderers    An array of FragmentRendererInterface instances
      * @param bool                        $debug        Whether the debug mode is enabled or not
      */
-    public function __construct(RequestStack $requestStack, array $renderers = array(), bool $debug = false)
+    public function __construct(RequestStack $requestStack, array $renderers = [], bool $debug = false)
     {
         $this->requestStack = $requestStack;
         foreach ($renderers as $renderer) {
@@ -70,7 +70,7 @@ public function addRenderer(FragmentRendererInterface $renderer)
      * @throws \InvalidArgumentException when the renderer does not exist
      * @throws \LogicException           when no master request is being handled
      */
-    public function render($uri, $renderer = 'inline', array $options = array())
+    public function render($uri, $renderer = 'inline', array $options = [])
     {
         if (!isset($options['ignore_errors'])) {
             $options['ignore_errors'] = !$this->debug;
diff --git a/src/Symfony/Component/HttpKernel/HttpCache/SubRequestHandler.php b/src/Symfony/Component/HttpKernel/HttpCache/SubRequestHandler.php
index 84d7a84e7995..cef9817e01d6 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/SubRequestHandler.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/SubRequestHandler.php
@@ -32,13 +32,13 @@ public static function handle(HttpKernelInterface $kernel, Request $request, $ty
         // remove untrusted values
         $remoteAddr = $request->server->get('REMOTE_ADDR');
         if (!IpUtils::checkIp($remoteAddr, $trustedProxies)) {
-            $trustedHeaders = array(
+            $trustedHeaders = [
                 'FORWARDED' => $trustedHeaderSet & Request::HEADER_FORWARDED,
                 'X_FORWARDED_FOR' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_FOR,
                 'X_FORWARDED_HOST' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_HOST,
                 'X_FORWARDED_PROTO' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_PROTO,
                 'X_FORWARDED_PORT' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_PORT,
-            );
+            ];
             foreach (array_filter($trustedHeaders) as $name => $key) {
                 $request->headers->remove($name);
                 $request->server->remove('HTTP_'.$name);
@@ -46,8 +46,8 @@ public static function handle(HttpKernelInterface $kernel, Request $request, $ty
         }
 
         // compute trusted values, taking any trusted proxies into account
-        $trustedIps = array();
-        $trustedValues = array();
+        $trustedIps = [];
+        $trustedValues = [];
         foreach (array_reverse($request->getClientIps()) as $ip) {
             $trustedIps[] = $ip;
             $trustedValues[] = sprintf('for="%s"', $ip);
@@ -78,7 +78,7 @@ public static function handle(HttpKernelInterface $kernel, Request $request, $ty
 
         // ensure 127.0.0.1 is set as trusted proxy
         if (!IpUtils::checkIp('127.0.0.1', $trustedProxies)) {
-            Request::setTrustedProxies(array_merge($trustedProxies, array('127.0.0.1')), Request::getTrustedHeaderSet());
+            Request::setTrustedProxies(array_merge($trustedProxies, ['127.0.0.1']), Request::getTrustedHeaderSet());
         }
 
         try {
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 2df9d0d0443d..c8113bd133fb 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -48,7 +48,7 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     /**
      * @var BundleInterface[]
      */
-    protected $bundles = array();
+    protected $bundles = [];
 
     protected $container;
     protected $rootDir;
@@ -246,7 +246,7 @@ public function locateResource($name, $dir = null, $first = true)
         $overridePath = substr($path, 9);
         $resourceBundle = null;
         $bundle = $this->getBundle($bundleName);
-        $files = array();
+        $files = [];
 
         if ($isResource && file_exists($file = $dir.'/'.$bundle->getName().$overridePath)) {
             if (null !== $resourceBundle) {
@@ -390,7 +390,7 @@ public function getCharset()
      */
     public function getAnnotatedClassesToCompile(): array
     {
-        return array();
+        return [];
     }
 
     /**
@@ -401,7 +401,7 @@ public function getAnnotatedClassesToCompile(): array
     protected function initializeBundles()
     {
         // init bundles
-        $this->bundles = array();
+        $this->bundles = [];
         foreach ($this->registerBundles() as $bundle) {
             $name = $bundle->getName();
             if (isset($this->bundles[$name])) {
@@ -476,7 +476,7 @@ protected function initializeContainer()
         }
 
         if ($this->debug) {
-            $collectedLogs = array();
+            $collectedLogs = [];
             $previousHandler = \defined('PHPUNIT_COMPOSER_INSTALL');
             $previousHandler = $previousHandler ?: set_error_handler(function ($type, $message, $file, $line) use (&$collectedLogs, &$previousHandler) {
                 if (E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) {
@@ -498,14 +498,14 @@ protected function initializeContainer()
                     }
                 }
 
-                $collectedLogs[$message] = array(
+                $collectedLogs[$message] = [
                     'type' => $type,
                     'message' => $message,
                     'file' => $file,
                     'line' => $line,
                     'trace' => $backtrace,
                     'count' => 1,
-                );
+                ];
             });
         }
 
@@ -542,7 +542,7 @@ protected function initializeContainer()
             // Because concurrent requests might still be using them,
             // old container files are not removed immediately,
             // but on a next dump of the container.
-            static $legacyContainers = array();
+            static $legacyContainers = [];
             $oldContainerDir = \dirname($oldContainer->getFileName());
             $legacyContainers[$oldContainerDir.'.legacy'] = true;
             foreach (glob(\dirname($oldContainerDir).\DIRECTORY_SEPARATOR.'*.legacy') as $legacyContainer) {
@@ -566,18 +566,18 @@ protected function initializeContainer()
      */
     protected function getKernelParameters()
     {
-        $bundles = array();
-        $bundlesMetadata = array();
+        $bundles = [];
+        $bundlesMetadata = [];
 
         foreach ($this->bundles as $name => $bundle) {
             $bundles[$name] = \get_class($bundle);
-            $bundlesMetadata[$name] = array(
+            $bundlesMetadata[$name] = [
                 'path' => $bundle->getPath(),
                 'namespace' => $bundle->getNamespace(),
-            );
+            ];
         }
 
-        return array(
+        return [
             'kernel.root_dir' => realpath($this->rootDir) ?: $this->rootDir,
             'kernel.project_dir' => realpath($this->getProjectDir()) ?: $this->getProjectDir(),
             'kernel.environment' => $this->environment,
@@ -589,7 +589,7 @@ protected function getKernelParameters()
             'kernel.bundles_metadata' => $bundlesMetadata,
             'kernel.charset' => $this->getCharset(),
             'kernel.container_class' => $this->getContainerClass(),
-        );
+        ];
     }
 
     /**
@@ -601,7 +601,7 @@ protected function getKernelParameters()
      */
     protected function buildContainer()
     {
-        foreach (array('cache' => $this->warmupDir ?: $this->getCacheDir(), 'logs' => $this->getLogDir()) as $name => $dir) {
+        foreach (['cache' => $this->warmupDir ?: $this->getCacheDir(), 'logs' => $this->getLogDir()] as $name => $dir) {
             if (!is_dir($dir)) {
                 if (false === @mkdir($dir, 0777, true) && !is_dir($dir)) {
                     throw new \RuntimeException(sprintf("Unable to create the %s directory (%s)\n", $name, $dir));
@@ -629,7 +629,7 @@ protected function buildContainer()
      */
     protected function prepareContainer(ContainerBuilder $container)
     {
-        $extensions = array();
+        $extensions = [];
         foreach ($this->bundles as $bundle) {
             if ($extension = $bundle->getContainerExtension()) {
                 $container->registerExtension($extension);
@@ -691,14 +691,14 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
             $dumper->setProxyDumper(new ProxyDumper());
         }
 
-        $content = $dumper->dump(array(
+        $content = $dumper->dump([
             'class' => $class,
             'base_class' => $baseClass,
             'file' => $cache->getPath(),
             'as_files' => true,
             'debug' => $this->debug,
             'build_time' => $container->hasParameter('kernel.container_build_time') ? $container->getParameter('kernel.container_build_time') : time(),
-        ));
+        ]);
 
         $rootCode = array_pop($content);
         $dir = \dirname($cache->getPath()).'/';
@@ -724,7 +724,7 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
     protected function getContainerLoader(ContainerInterface $container)
     {
         $locator = new FileLocator($this);
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new XmlFileLoader($container, $locator),
             new YamlFileLoader($container, $locator),
             new IniFileLoader($container, $locator),
@@ -732,7 +732,7 @@ protected function getContainerLoader(ContainerInterface $container)
             new GlobFileLoader($container, $locator),
             new DirectoryLoader($container, $locator),
             new ClosureLoader($container),
-        ));
+        ]);
 
         return new DelegatingLoader($resolver);
     }
@@ -776,8 +776,8 @@ public static function stripComments($source)
                 }
 
                 // replace multiple new lines with a single newline
-                $rawChunk .= preg_replace(array('/\n{2,}/S'), "\n", $token[1]);
-            } elseif (\in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
+                $rawChunk .= preg_replace(['/\n{2,}/S'], "\n", $token[1]);
+            } elseif (\in_array($token[0], [T_COMMENT, T_DOC_COMMENT])) {
                 $ignoreSpace = true;
             } else {
                 $rawChunk .= $token[1];
@@ -800,12 +800,12 @@ public static function stripComments($source)
 
     public function serialize()
     {
-        return serialize(array($this->environment, $this->debug));
+        return serialize([$this->environment, $this->debug]);
     }
 
     public function unserialize($data)
     {
-        list($environment, $debug) = unserialize($data, array('allowed_classes' => false));
+        list($environment, $debug) = unserialize($data, ['allowed_classes' => false]);
 
         $this->__construct($environment, $debug);
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php b/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
index e1d2fe82e979..d24131dae57f 100644
--- a/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
@@ -24,7 +24,7 @@ public function testClearPoolsInjectedInConstructor()
             ->expects($this->once())
             ->method('clear');
 
-        (new Psr6CacheClearer(array('pool' => $pool)))->clear('');
+        (new Psr6CacheClearer(['pool' => $pool]))->clear('');
     }
 
     public function testClearPool()
@@ -34,7 +34,7 @@ public function testClearPool()
             ->expects($this->once())
             ->method('clear');
 
-        (new Psr6CacheClearer(array('pool' => $pool)))->clearPool('pool');
+        (new Psr6CacheClearer(['pool' => $pool]))->clearPool('pool');
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php b/src/Symfony/Component/HttpKernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php
index cfa998c1de14..c3d69db242eb 100644
--- a/src/Symfony/Component/HttpKernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php
+++ b/src/Symf
F438
ony/Component/HttpKernel/Tests/CacheWarmer/CacheWarmerAggregateTest.php
@@ -34,7 +34,7 @@ public function testInjectWarmersUsingConstructor()
         $warmer
             ->expects($this->once())
             ->method('warmUp');
-        $aggregate = new CacheWarmerAggregate(array($warmer));
+        $aggregate = new CacheWarmerAggregate([$warmer]);
         $aggregate->warmUp(self::$cacheDir);
     }
 
@@ -48,7 +48,7 @@ public function testWarmupDoesCallWarmupOnOptionalWarmersWhenEnableOptionalWarme
             ->expects($this->once())
             ->method('warmUp');
 
-        $aggregate = new CacheWarmerAggregate(array($warmer));
+        $aggregate = new CacheWarmerAggregate([$warmer]);
         $aggregate->enableOptionalWarmers();
         $aggregate->warmUp(self::$cacheDir);
     }
@@ -64,7 +64,7 @@ public function testWarmupDoesNotCallWarmupOnOptionalWarmersWhenEnableOptionalWa
             ->expects($this->never())
             ->method('warmUp');
 
-        $aggregate = new CacheWarmerAggregate(array($warmer));
+        $aggregate = new CacheWarmerAggregate([$warmer]);
         $aggregate->warmUp(self::$cacheDir);
     }
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/ClientTest.php b/src/Symfony/Component/HttpKernel/Tests/ClientTest.php
index 17cbe3687c86..d8d5b2a6ee03 100644
--- a/src/Symfony/Component/HttpKernel/Tests/ClientTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/ClientTest.php
@@ -70,7 +70,7 @@ public function testFilterResponseConvertsCookies()
         $response->headers->setCookie($cookie2 = new Cookie('foo1', 'bar1', \DateTime::createFromFormat('j-M-Y H:i:s T', '15-Feb-2009 20:00:00 GMT')->format('U'), '/foo', 'http://example.com', true, true));
         $domResponse = $m->invoke($client, $response);
         $this->assertSame((string) $cookie1, $domResponse->getHeader('Set-Cookie'));
-        $this->assertSame(array((string) $cookie1, (string) $cookie2), $domResponse->getHeader('Set-Cookie', false));
+        $this->assertSame([(string) $cookie1, (string) $cookie2], $domResponse->getHeader('Set-Cookie', false));
     }
 
     public function testFilterResponseSupportsStreamedResponses()
@@ -99,14 +99,14 @@ public function testUploadedFile()
         $kernel = new TestHttpKernel();
         $client = new Client($kernel);
 
-        $files = array(
-            array('tmp_name' => $source, 'name' => 'original', 'type' => 'mime/original', 'size' => null, 'error' => UPLOAD_ERR_OK),
+        $files = [
+            ['tmp_name' => $source, 'name' => 'original', 'type' => 'mime/original', 'size' => null, 'error' => UPLOAD_ERR_OK],
             new UploadedFile($source, 'original', 'mime/original', UPLOAD_ERR_OK, true),
-        );
+        ];
 
         $file = null;
         foreach ($files as $file) {
-            $client->request('POST', '/', array(), array('foo' => $file));
+            $client->request('POST', '/', [], ['foo' => $file]);
 
             $files = $client->getRequest()->files->all();
 
@@ -130,9 +130,9 @@ public function testUploadedFileWhenNoFileSelected()
         $kernel = new TestHttpKernel();
         $client = new Client($kernel);
 
-        $file = array('tmp_name' => '', 'name' => '', 'type' => '', 'size' => 0, 'error' => UPLOAD_ERR_NO_FILE);
+        $file = ['tmp_name' => '', 'name' => '', 'type' => '', 'size' => 0, 'error' => UPLOAD_ERR_NO_FILE];
 
-        $client->request('POST', '/', array(), array('foo' => $file));
+        $client->request('POST', '/', [], ['foo' => $file]);
 
         $files = $client->getRequest()->files->all();
 
@@ -149,8 +149,8 @@ public function testUploadedFileWhenSizeExceedsUploadMaxFileSize()
 
         $file = $this
             ->getMockBuilder('Symfony\Component\HttpFoundation\File\UploadedFile')
-            ->setConstructorArgs(array($source, 'original', 'mime/original', UPLOAD_ERR_OK, true))
-            ->setMethods(array('getSize', 'getClientSize'))
+            ->setConstructorArgs([$source, 'original', 'mime/original', UPLOAD_ERR_OK, true])
+            ->setMethods(['getSize', 'getClientSize'])
             ->getMock()
         ;
         /* should be modified when the getClientSize will be removed */
@@ -163,7 +163,7 @@ public function testUploadedFileWhenSizeExceedsUploadMaxFileSize()
             ->will($this->returnValue(INF))
         ;
 
-        $client->request('POST', '/', array(), array($file));
+        $client->request('POST', '/', [], [$file]);
 
         $files = $client->getRequest()->files->all();
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
index bf93e5d515a4..f1915961ffcd 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
@@ -119,7 +119,7 @@ public function testErrorIsTruncated()
 
         $container->compile();
 
-        $request = $this->requestWithAttributes(array('_controller' => array(DummyController::class, 'index')));
+        $request = $this->requestWithAttributes(['_controller' => [DummyController::class, 'index']]);
         $argument = new ArgumentMetadata('dummy', DummyService::class, false, false, null);
         $container->get('argument_resolver.service')->resolve($request, $argument)->current();
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ContainerControllerResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ContainerControllerResolverTest.php
index 1a144eee49c4..61d8bec32a70 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ContainerControllerResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ContainerControllerResolverTest.php
@@ -137,12 +137,12 @@ public function testExceptionWhenUsingRemovedControllerServiceWithClassNameAsNam
         $container->expects($this->atLeastOnce())
             ->method('getRemovedIds')
             ->with()
-            ->will($this->returnValue(array(ControllerTestService::class => true)))
+            ->will($this->returnValue([ControllerTestService::class => true]))
         ;
 
         $resolver = $this->createControllerResolver(null, $container);
         $request = Request::create('/');
-        $request->attributes->set('_controller', array(ControllerTestService::class, 'action'));
+        $request->attributes->set('_controller', [ControllerTestService::class, 'action']);
 
         $resolver->getController($request);
     }
@@ -165,7 +165,7 @@ public function testExceptionWhenUsingRemovedControllerService()
         $container->expects($this->atLeastOnce())
             ->method('getRemovedIds')
             ->with()
-            ->will($this->returnValue(array('app.my_controller' => true)))
+            ->will($this->returnValue(['app.my_controller' => true]))
         ;
 
         $resolver = $this->createControllerResolver(null, $container);
@@ -178,23 +178,23 @@ public function testExceptionWhenUsingRemovedControllerService()
     public function getUndefinedControllers()
     {
         $tests = parent::getUndefinedControllers();
-        $tests[0] = array('foo', \InvalidArgumentException::class, 'Controller "foo" does neither exist as service nor as class');
-        $tests[1] = array('oof::bar', \InvalidArgumentException::class, 'Controller "oof" does neither exist as service nor as class');
-        $tests[2] = array(array('oof', 'bar'), \InvalidArgumentException::class, 'Controller "oof" does neither exist as service nor as class');
-        $tests[] = array(
-            array(ControllerTestService::class, 'action'),
+        $tests[0] = ['foo', \InvalidArgumentException::class, 'Controller "foo" does neither exist as service nor as class'];
+        $tests[1] = ['oof::bar', \InvalidArgumentException::class, 'Controller "oof" does neither exist as service nor as class'];
+        $tests[2] = [['oof', 'bar'], \InvalidArgumentException::class, 'Controller "oof" does neither exist as service nor as class'];
+        $tests[] = [
+            [ControllerTestService::class, 'action'],
             \InvalidArgumentException::class,
             'Controller "Symfony\Component\HttpKernel\Tests\Controller\ControllerTestService" has required constructor arguments and does not exist in the container. Did you forget to define such a service?',
-        );
-        $tests[] = array(
+        ];
+        $tests[] = [
             ControllerTestService::class.'::action',
             \InvalidArgumentException::class, 'Controller "Symfony\Component\HttpKernel\Tests\Controller\ControllerTestService" has required constructor arguments and does not exist in the container. Did you forget to define such a service?',
-        );
-        $tests[] = array(
+        ];
+        $tests[] = [
             InvokableControllerService::class,
             \InvalidArgumentException::class,
             'Controller "Symfony\Component\HttpKernel\Tests\Controller\InvokableControllerService" has required constructor arguments and does not exist in the container. Did you forget to define such a service?',
-        );
+        ];
 
         return $tests;
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
index fe624f7b6008..5fac0923309e 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
@@ -55,9 +55,9 @@ public function testGetControllerWithObjectAndMethod()
         $object = new ControllerTest();
 
         $request = Request::create('/');
-        $request->attributes->set('_controller', array($object, 'publicAction'));
+        $request->attributes->set('_controller', [$object, 'publicAction']);
         $controller = $resolver->getController($request);
-        $this->assertSame(array($object, 'publicAction'), $controller);
+        $this->assertSame([$object, 'publicAction'], $controller);
     }
 
     public function testGetControllerWithClassAndMethodAsArray()
@@ -65,7 +65,7 @@ public function testGetControllerWithClassAndMethodAsArray()
         $resolver = $this->createControllerResolver();
 
         $request = Request::create('/');
-        $request->attributes->set('_controller', array(ControllerTest::class, 'publicAction'));
+        $request->attributes->set('_controller', [ControllerTest::class, 'publicAction']);
         $controller = $resolver->getController($request);
         $this->assertInstanceOf(ControllerTest::class, $controller[0]);
         $this->assertSame('publicAction', $controller[1]);
@@ -145,12 +145,12 @@ public function testGetControllerWithStaticController($staticController, $return
 
     public function getStaticControllers()
     {
-        return array(
-            array(TestAbstractController::class.'::staticAction', 'foo'),
-            array(array(TestAbstractController::class, 'staticAction'), 'foo'),
-            array(PrivateConstructorController::class.'::staticAction', 'bar'),
-            array(array(PrivateConstructorController::class, 'staticAction'), 'bar'),
-        );
+        return [
+            [TestAbstractController::class.'::staticAction', 'foo'],
+            [[TestAbstractController::class, 'staticAction'], 'foo'],
+            [PrivateConstructorController::class.'::staticAction', 'bar'],
+            [[PrivateConstructorController::class, 'staticAction'], 'bar'],
+        ];
     }
 
     /**
@@ -175,22 +175,22 @@ public function getUndefinedControllers()
     {
         $controller = new ControllerTest();
 
-        return array(
-            array('foo', \Error::class, 'Class \'foo\' not found'),
-            array('oof::bar', \Error::class, 'Class \'oof\' not found'),
-            array(array('oof', 'bar'), \Error::class, 'Class \'oof\' not found'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::staticsAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "staticsAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest", did you mean "staticAction"?'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::privateAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "privateAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::protectedAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "protectedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::undefinedAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "undefinedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest". Available methods: "publicAction", "staticAction"'),
-            array('Symfony\Component\HttpKernel\Tests\Controller\ControllerTest', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Controller class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" cannot be called without a method name. You need to implement "__invoke" or use one of the available methods: "publicAction", "staticAction".'),
-            array(array($controller, 'staticsAction'), \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "staticsAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest", did you mean "staticAction"?'),
-            array(array($controller, 'privateAction'), \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "privateAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'),
-            array(array($controller, 'protectedAction'), \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "protectedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'),
-            array(array($controller, 'undefinedAction'), \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "undefinedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest". Available methods: "publicAction", "staticAction"'),
-            array($controller, \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Controller class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" cannot be called without a method name. You need to implement "__invoke" or use one of the available methods: "publicAction", "staticAction".'),
-            array(array('a' => 'foo', 'b' => 'bar'), \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Invalid array callable, expected array(controller, method).'),
-        );
+        return [
+            ['foo', \Error::class, 'Class \'foo\' not found'],
+            ['oof::bar', \Error::class, 'Class \'oof\' not found'],
+            [['oof', 'bar'], \Error::class, 'Class \'oof\' not found'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::staticsAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "staticsAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest", did you mean "staticAction"?'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::privateAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "privateAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::protectedAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "protectedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::undefinedAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "undefinedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest". Available methods: "publicAction", "staticAction"'],
+            ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest', \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Controller class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" cannot be called without a method name. You need to implement "__invoke" or use one of the available methods: "publicAction", "staticAction".'],
+            [[$controller, 'staticsAction'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "staticsAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest", did you mean "staticAction"?'],
+            [[$controller, 'privateAction'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "privateAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
+            [[$controller, 'protectedAction'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "protectedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
+            [[$controller, 'undefinedAction'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "undefinedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest". Available methods: "publicAction", "staticAction"'],
+            [$controller, \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Controller class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" cannot be called without a method name. You need to implement "__invoke" or use one of the available methods: "publicAction", "staticAction".'],
+            [['a' => 'foo', 'b' => 'bar'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Invalid array callable, expected array(controller, method).'],
+        ];
     }
 
     protected function createControllerResolver(LoggerInterface $logger = null)
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DumpDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DumpDataCollectorTest.php
index 776cf482b5c1..76c1d96dcc36 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/DumpDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/DumpDataCollectorTest.php
@@ -59,7 +59,7 @@ public function testDump()
 
     public function testDumpWithServerConnection()
     {
-        $data = new Data(array(array(123)));
+        $data = new Data([[123]]);
 
         // Server is up, server dumper is used
         $serverDumper = $this->getMockBuilder(Connection::class)->disableOriginalConstructor()->getMock();
diff --git a/src/Symfony/Component/HttpKernel/Tests/DataCollector/LoggerDataCollectorTest.php b/src/Symfony/Component/HttpKernel/Tests/DataCollector/LoggerDataCollectorTest.php
index 3f686aa9d894..e0bcc24bd78b 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DataCollector/LoggerDataCollectorTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DataCollector/LoggerDataCollectorTest.php
@@ -53,10 +53,10 @@ public function testWithMasterRequest()
 
         $logger = $this
             ->getMockBuilder(DebugLoggerInterface::class)
-            ->setMethods(array('countErrors', 'getLogs', 'clear'))
+            ->setMethods(['countErrors', 'getLogs', 'clear'])
             ->getMock();
         $logger->expects($this->once())->method('countErrors')->with(null);
-        $logger->expects($this->exactly(2))->method('getLogs')->with(null)->will($this->returnValue(array()));
+        $logger->expects($this->exactly(2))->method('getLogs')->with(null)->will($this->returnValue([]));
 
         $c = new LoggerDataCollector($logger, __DIR__.'/', $stack);
 
@@ -74,10 +74,10 @@ public function testWithSubRequest()
 
         $logger = $this
             ->getMockBuilder(DebugLoggerInterface::class)
-            ->setMethods(array('countErrors', 'getLogs', 'clear'))
+            ->setMethods(['countErrors', 'getLogs', 'clear'])
             ->getMock();
         $logger->expects($this->once())->method('countErrors')->with($subRequest);
-        $logger->expects($this->exactly(2))->method('getLogs')->with($subRequest)->will($this->returnValue(array()));
+        $logger->expects($this->exactly(2))->method('getLogs')->with($subRequest)->will($this->returnValue([]));
 
         $c = new LoggerDataCollector($logger, __DIR__.'/', $stack);
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ControllerArgumentValueResolverPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ControllerArgumentValueResolverPassTest.php
index 3b6ba55bf6d2..2694d002cf5b 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ControllerArgumentValueResolverPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ControllerArgumentValueResolverPassTest.php
@@ -55,19 +55,19 @@ public function testServicesAreOrderedAccordingToPriority()
 
     public function testInDebugWithStopWatchDefinition()
     {
-        $services = array(
-            'n3' => array(array()),
-            'n1' => array(array('priority' => 200)),
-            'n2' => array(array('priority' => 100)),
-        );
+        $services = [
+            'n3' => [[]],
+            'n1' => [['priority' => 200]],
+            'n2' => [['priority' => 100]],
+        ];
 
-        $expected = array(
+        $expected = [
             new Reference('n1'),
             new Reference('n2'),
             new Reference('n3'),
-        );
+        ];
 
-        $definition = new Definition(ArgumentResolver::class, array(null, array()));
+        $definition = new Definition(ArgumentResolver::class, [null, []]);
         $container = new ContainerBuilder();
         $container->register('debug.stopwatch', Stopwatch::class);
         $container->setDefinition('argument_resolver', $definition);
@@ -92,9 +92,9 @@ public function testInDebugWithStopWatchDefinition()
 
     public function testInDebugWithouStopWatchDefinition()
     {
-        $expected = array(new Reference('n1'));
+        $expected = [new Reference('n1')];
 
-        $definition = new Definition(ArgumentResolver::class, array(null, array()));
+        $definition = new Definition(ArgumentResolver::class, [null, []]);
         $container = new ContainerBuilder();
         $container->register('n1')->addTag('controller.argument_value_resolver');
         $container->setDefinition('argument_resolver', $definition);
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
index 6c036e88a345..61d32696512f 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
@@ -32,7 +32,7 @@ class RegisterControllerArgumentLocatorsPassTest extends TestCase
     public function testInvalidClass()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NotFound::class)
             ->addTag('controller.service_arguments')
@@ -49,10 +49,10 @@ public function testInvalidClass()
     public function testNoAction()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('argument' => 'bar'))
+            ->addTag('controller.service_arguments', ['argument' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -66,10 +66,10 @@ public function testNoAction()
     public function testNoArgument()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -83,10 +83,10 @@ public function testNoArgument()
     public function testNoService()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -100,10 +100,10 @@ public function testNoService()
     public function testInvalidMethod()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'barAction', 'argument' => 'bar', 'id' => 'bar_service'))
+            ->addTag('controller.service_arguments', ['action' => 'barAction', 'argument' => 'bar', 'id' => 'bar_service'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -117,10 +117,10 @@ public function testInvalidMethod()
     public function testInvalidArgument()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'baz', 'id' => 'bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'baz', 'id' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -130,7 +130,7 @@ public function testInvalidArgument()
     public function testAllActions()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
             ->addTag('controller.service_arguments')
@@ -141,7 +141,7 @@ public function testAllActions()
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
 
-        $this->assertEquals(array('foo::fooAction'), array_keys($locator));
+        $this->assertEquals(['foo::fooAction'], array_keys($locator));
         $this->assertInstanceof(ServiceClosureArgument::class, $locator['foo::fooAction']);
 
         $locator = $container->getDefinition((string) $locator['foo::fooAction']->getValues()[0]);
@@ -149,18 +149,18 @@ public function testAllActions()
         $this->assertSame(ServiceLocator::class, $locator->getClass());
         $this->assertFalse($locator->isPublic());
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference(ControllerDummy::class, ControllerDummy::class, ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE)));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference(ControllerDummy::class, ControllerDummy::class, ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testExplicitArgument()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => 'bar'))
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => 'baz')) // should be ignored, the first wins
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => 'bar'])
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => 'baz']) // should be ignored, the first wins
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -169,17 +169,17 @@ public function testExplicitArgument()
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
         $locator = $container->getDefinition((string) $locator['foo::fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE)));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testOptionalArgument()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => '?bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => '?bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -188,14 +188,14 @@ public function testOptionalArgument()
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
         $locator = $container->getDefinition((string) $locator['foo::fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testSkipSetContainer()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ContainerAwareRegisterTestController::class)
             ->addTag('controller.service_arguments');
@@ -204,7 +204,7 @@ public function testSkipSetContainer()
         $pass->process($container);
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
-        $this->assertSame(array('foo::fooAction'), array_keys($locator));
+        $this->assertSame(['foo::fooAction'], array_keys($locator));
     }
 
     /**
@@ -214,7 +214,7 @@ public function testSkipSetContainer()
     public function testExceptionOnNonExistentTypeHint()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassController::class)
             ->addTag('controller.service_arguments');
@@ -230,7 +230,7 @@ public function testExceptionOnNonExistentTypeHint()
     public function testExceptionOnNonExistentTypeHintDifferentNamespace()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassDifferentNamespaceController::class)
             ->addTag('controller.service_arguments');
@@ -242,7 +242,7 @@ public function testExceptionOnNonExistentTypeHintDifferentNamespace()
     public function testNoExceptionOnNonExistentTypeHintOptionalArg()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassOptionalController::class)
             ->addTag('controller.service_arguments');
@@ -251,13 +251,13 @@ public function testNoExceptionOnNonExistentTypeHintOptionalArg()
         $pass->process($container);
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
-        $this->assertSame(array('foo::barAction', 'foo::fooAction'), array_keys($locator));
+        $this->assertSame(['foo::barAction', 'foo::fooAction'], array_keys($locator));
     }
 
     public function testArgumentWithNoTypeHintIsOk()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
             ->addTag('controller.service_arguments');
@@ -272,7 +272,7 @@ public function testArgumentWithNoTypeHintIsOk()
     public function testControllersAreMadePublic()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
             ->setPublic(false)
@@ -290,10 +290,10 @@ public function testControllersAreMadePublic()
     public function testBindings($bindingName)
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->setBindings(array($bindingName => new Reference('foo')))
+            ->setBindings([$bindingName => new Reference('foo')])
             ->addTag('controller.service_arguments');
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -303,22 +303,22 @@ public function testBindings($bindingName)
 
         $locator = $container->getDefinition((string) $locator['foo::fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new Reference('foo')));
+        $expected = ['bar' => new ServiceClosureArgument(new Reference('foo'))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function provideBindings()
     {
-        return array(array(ControllerDummy::class), array('$bar'));
+        return [[ControllerDummy::class], ['$bar']];
     }
 
     public function testBindScalarValueToControllerArgument()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
-            ->setBindings(array('$someArg' => '%foo%'))
+            ->setBindings(['$someArg' => '%foo%'])
             ->addTag('controller.service_arguments');
 
         $container->setParameter('foo', 'foo_val');
@@ -344,12 +344,12 @@ public function testBindScalarValueToControllerArgument()
     public function testBindingsOnChildDefinitions()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('parent', ArgumentWithoutTypeController::class);
 
         $container->setDefinition('child', (new ChildDefinition('parent'))
-            ->setBindings(array('$someArg' => new Reference('parent')))
+            ->setBindings(['$someArg' => new Reference('parent')])
             ->addTag('controller.service_arguments')
         );
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php
index dfec38347d6c..56fe6baf76b4 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RemoveEmptyControllerArgumentLocatorsPassTest.php
@@ -23,13 +23,13 @@ class RemoveEmptyControllerArgumentLocatorsPassTest extends TestCase
     public function testProcess()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('stdClass', 'stdClass');
         $container->register(parent::class, 'stdClass');
         $container->register('c1', RemoveTestController1::class)->addTag('controller.service_arguments');
         $container->register('c2', RemoveTestController2::class)->addTag('controller.service_arguments')
-            ->addMethodCall('setTestCase', array(new Reference('c1')));
+            ->addMethodCall('setTestCase', [new Reference('c1')]);
 
         $pass = new RegisterControllerArgumentLocatorsPass();
         $pass->process($container);
@@ -43,19 +43,19 @@ public function testProcess()
         (new ResolveInvalidReferencesPass())->process($container);
 
         $this->assertCount(1, $container->getDefinition((string) $controllers['c2::setTestCase']->getValues()[0])->getArgument(0));
-        $this->assertSame(array(), $container->getDefinition((string) $controllers['c2::fooAction']->getValues()[0])->getArgument(0));
+        $this->assertSame([], $container->getDefinition((string) $controllers['c2::fooAction']->getValues()[0])->getArgument(0));
 
         (new RemoveEmptyControllerArgumentLocatorsPass())->process($container);
 
         $controllers = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
 
-        $this->assertSame(array('c1::fooAction', 'c1:fooAction'), array_keys($controllers));
-        $this->assertSame(array('bar'), array_keys($container->getDefinition((string) $controllers['c1::fooAction']->getValues()[0])->getArgument(0)));
+        $this->assertSame(['c1::fooAction', 'c1:fooAction'], array_keys($controllers));
+        $this->assertSame(['bar'], array_keys($container->getDefinition((string) $controllers['c1::fooAction']->getValues()[0])->getArgument(0)));
 
-        $expectedLog = array(
+        $expectedLog = [
             'Symfony\Component\HttpKernel\DependencyInjection\RemoveEmptyControllerArgumentLocatorsPass: Removing service-argument resolver for controller "c2::fooAction": no corresponding services exist for the referenced types.',
             'Symfony\Component\HttpKernel\DependencyInjection\RemoveEmptyControllerArgumentLocatorsPass: Removing method "setTestCase" of service "c2" from controller candidates: the method is called at instantiation, thus cannot be an action.',
-        );
+        ];
 
         $this->assertSame($expectedLog, $container->getCompiler()->getLog());
     }
@@ -63,7 +63,7 @@ public function testProcess()
     public function testInvoke()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('invokable', InvokableRegisterTestController::class)
             ->addTag('controller.service_arguments')
@@ -73,7 +73,7 @@ public function testInvoke()
         (new RemoveEmptyControllerArgumentLocatorsPass())->process($container);
 
         $this->assertEquals(
-            array('invokable::__invoke', 'invokable:__invoke', 'invokable'),
+            ['invokable::__invoke', 'invokable:__invoke', 'invokable'],
             array_keys($container->getDefinition((string) $resolver->getArgument(0))->getArgument(0))
         );
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/SessionListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/SessionListenerTest.php
index debe049a4f47..47ac75e8bcc1 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/SessionListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/SessionListenerTest.php
@@ -113,9 +113,9 @@ public function testUninitializedSession()
         $response->setSharedMaxAge(60);
         $response->headers->set(AbstractSessionListener::NO_AUTO_CACHE_CONTROL_HEADER, 'true');
 
-        $container = new ServiceLocator(array(
+        $container = new ServiceLocator([
             'initialized_session' => function () {},
-        ));
+        ]);
 
         $listener = new SessionListener($container);
         $listener->onKernelResponse(new FilterResponseEvent($kernel, new Request(), HttpKernelInterface::MASTER_REQUEST, $response));
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/MethodNotAllowedHttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/MethodNotAllowedHttpExceptionTest.php
index 41aef15e412c..991f97582d1e 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/MethodNotAllowedHttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/MethodNotAllowedHttpExceptionTest.php
@@ -14,11 +14,11 @@ public function testHeadersDefault()
 
     public function testWithHeaderConstruct()
     {
-        $headers = array(
+        $headers = [
             'Cache-Control' => 'public, s-maxage=1200',
-        );
+        ];
 
-        $exception = new MethodNotAllowedHttpException(array('get'), null, null, null, $headers);
+        $exception = new MethodNotAllowedHttpException(['get'], null, null, null, $headers);
 
         $headers['Allow'] = 'GET';
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/ServiceUnavailableHttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/ServiceUnavailableHttpExceptionTest.php
index a799c0640458..daa4fa407a09 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/ServiceUnavailableHttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/ServiceUnavailableHttpExceptionTest.php
@@ -14,9 +14,9 @@ public function testHeadersDefaultRetryAfter()
 
     public function testWithHeaderConstruct()
     {
-        $headers = array(
+        $headers = [
             'Cache-Control' => 'public, s-maxage=1337',
-        );
+        ];
 
         $exception = new ServiceUnavailableHttpException(1337, null, null, null, $headers);
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/TooManyRequestsHttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/TooManyRequestsHttpExceptionTest.php
index b39d0bfaa98b..0048ec85c0c8 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/TooManyRequestsHttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/TooManyRequestsHttpExceptionTest.php
@@ -14,9 +14,9 @@ public function testHeadersDefaultRertyAfter()
 
     public function testWithHeaderConstruct()
     {
-        $headers = array(
+        $headers = [
             'Cache-Control' => 'public, s-maxage=69',
-        );
+        ];
 
         $exception = new TooManyRequestsHttpException(69, null, null, null, $headers);
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Exception/UnauthorizedHttpExceptionTest.php b/src/Symfony/Component/HttpKernel/Tests/Exception/UnauthorizedHttpExceptionTest.php
index cea73a1b2934..c7239e70b3d0 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Exception/UnauthorizedHttpExceptionTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Exception/UnauthorizedHttpExceptionTest.php
@@ -14,9 +14,9 @@ public function testHeadersDefault()
 
     public function testWithHeaderConstruct()
     {
-        $headers = array(
+        $headers = [
             'Cache-Control' => 'public, s-maxage=1200',
-        );
+        ];
 
         $exception = new UnauthorizedHttpException('Challenge', null, null, null, $headers);
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/TestEventDispatcher.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/TestEventDispatcher.php
index 693d58759f44..a0665ef99183 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/TestEventDispatcher.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fixtures/TestEventDispatcher.php
@@ -31,6 +31,6 @@ public function reset()
 
     public function getOrphanedEvents()
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/EsiFragmentRendererTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/EsiFragmentRendererTest.php
index 79a9f74da498..d8006e17079d 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/EsiFragmentRendererTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/EsiFragmentRendererTest.php
@@ -30,7 +30,7 @@ public function testRenderFallbackWithScalar()
     {
         $strategy = new EsiFragmentRenderer(new Esi(), $this->getInlineStrategy(true), new UriSigner('foo'));
         $request = Request::create('/');
-        $reference = new ControllerReference('main_controller', array('foo' => array(true)), array());
+        $reference = new ControllerReference('main_controller', ['foo' => [true]], []);
         $strategy->render($reference, $request);
     }
 
@@ -43,8 +43,8 @@ public function testRender()
         $request->headers->set('Surrogate-Capability', 'ESI/1.0');
 
         $this->assertEquals('<!-- bad ESI request: bad ESI request -->', $strategy->render('/', $request)->getContent());
-        $this->assertEquals("\n<!-- bad ESI request: bad ESI request -->", $strategy->render('/', $request, array('comment' => 'This is a comment'))->getContent());
-        $this->assertEquals('<!-- bad ESI request: bad ESI request -->', $strategy->render('/', $request, array('alt' => 'foo'))->getContent());
+        $this->assertEquals("\n<!-- bad ESI request: bad ESI request -->", $strategy->render('/', $request, ['comment' => 'This is a comment'])->getContent());
+        $this->assertEquals('<!-- bad ESI request: bad ESI request -->', $strategy->render('/', $request, ['alt' => 'foo'])->getContent());
     }
 
     public function testRenderControllerReference()
@@ -56,12 +56,12 @@ public function testRenderControllerReference()
         $request->setLocale('fr');
         $request->headers->set('Surrogate-Capability', 'ESI/1.0');
 
-        $reference = new ControllerReference('main_controller', array(), array());
-        $altReference = new ControllerReference('alt_controller', array(), array());
+        $reference = new ControllerReference('main_controller', [], []);
+        $altReference = new ControllerReference('alt_controller', [], []);
 
         $this->assertEquals(
             '<!-- bad ESI request: bad ESI request -->',
-            $strategy->render($reference, $request, array('alt' => $altReference))->getContent()
+            $strategy->render($reference, $request, ['alt' => $altReference])->getContent()
         );
     }
 
@@ -90,7 +90,7 @@ public function testRenderAltControllerReferenceWithoutSignerThrowsException()
         $request->setLocale('fr');
         $request->headers->set('Surrogate-Capability', 'ESI/1.0');
 
-        $strategy->render('/', $request, array('alt' => new ControllerReference('alt_controller')));
+        $strategy->render('/', $request, ['alt' => new ControllerReference('alt_controller')]);
     }
 
     private function getInlineStrategy($called = false)
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
index ceaa249ab606..155493d7f448 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
@@ -34,7 +34,7 @@ public function testRenderWithControllerReference()
     {
         $strategy = new InlineFragmentRenderer($this->getKernel($this->returnValue(new Response('foo'))));
 
-        $this->assertEquals('foo', $strategy->render(new ControllerReference('main_controller', array(), array()), Request::create('/'))->getContent());
+        $this->assertEquals('foo', $strategy->render(new ControllerReference('main_controller', [], []), Request::create('/'))->getContent());
     }
 
     public function testRenderWithObjectsAsAttributes()
@@ -42,29 +42,29 @@ public function testRenderWithObjectsAsAttributes()
         $object = new \stdClass();
 
         $subRequest = Request::create('/_fragment?_path=_format%3Dhtml%26_locale%3Den%26_controller%3Dmain_controller');
-        $subRequest->attributes->replace(array('object' => $object, '_format' => 'html', '_controller' => 'main_controller', '_locale' => 'en'));
-        $subRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
-        $subRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $subRequest->attributes->replace(['object' => $object, '_format' => 'html', '_controller' => 'main_controller', '_locale' => 'en']);
+        $subRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
+        $subRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $subRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         $subRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($subRequest));
 
-        $this->assertSame('foo', $strategy->render(new ControllerReference('main_controller', array('object' => $object), array()), Request::create('/'))->getContent());
+        $this->assertSame('foo', $strategy->render(new ControllerReference('main_controller', ['object' => $object], []), Request::create('/'))->getContent());
     }
 
     public function testRenderWithTrustedHeaderDisabled()
     {
-        Request::setTrustedProxies(array(), 0);
+        Request::setTrustedProxies([], 0);
 
         $expectedSubRequest = Request::create('/');
-        $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
+        $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
         $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
         $this->assertSame('foo', $strategy->render('/', Request::create('/'))->getContent());
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     /**
@@ -87,7 +87,7 @@ public function testRenderExceptionIgnoreErrors()
 
         $strategy = new InlineFragmentRenderer($this->getKernel($this->throwException(new \RuntimeException('foo'))), $dispatcher);
 
-        $this->assertEmpty($strategy->render('/', Request::create('/'), array('ignore_errors' => true))->getContent());
+        $this->assertEmpty($strategy->render('/', Request::create('/'), ['ignore_errors' => true])->getContent());
     }
 
     public function testRenderExceptionIgnoreErrorsWithAlt()
@@ -97,7 +97,7 @@ public function testRenderExceptionIgnoreErrorsWithAlt()
             $this->returnValue(new Response('bar'))
         )));
 
-        $this->assertEquals('bar', $strategy->render('/', Request::create('/'), array('ignore_errors' => true, 'alt' => '/foo'))->getContent());
+        $this->assertEquals('bar', $strategy->render('/', Request::create('/'), ['ignore_errors' => true, 'alt' => '/foo'])->getContent());
     }
 
     private function getKernel($returnValue)
@@ -129,7 +129,7 @@ public function testExceptionInSubRequestsDoesNotMangleOutputBuffers()
         $argumentResolver
             ->expects($this->once())
             ->method('getArguments')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
 
         $kernel = new HttpKernel(new EventDispatcher(), $controllerResolver, new RequestStack(), $argumentResolver);
@@ -140,7 +140,7 @@ public function testExceptionInSubRequestsDoesNotMangleOutputBuffers()
         echo 'Foo';
 
         // simulate a sub-request with output buffering and an exception
-        $renderer->render('/', Request::create('/'), array('ignore_errors' => true));
+        $renderer->render('/', Request::create('/'), ['ignore_errors' => true]);
 
         $this->assertEquals('Foo', ob_get_clean());
     }
@@ -151,10 +151,10 @@ public function testLocaleAndFormatAreIsKeptInSubrequest()
         $expectedSubRequest->attributes->set('_format', 'foo');
         $expectedSubRequest->setLocale('fr');
         if (Request::HEADER_X_FORWARDED_FOR & Request::getTrustedHeaderSet()) {
-            $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
+            $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
             $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         }
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
@@ -171,10 +171,10 @@ public function testESIHeaderIsKeptInSubrequest()
         $expectedSubRequest->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
 
         if (Request::HEADER_X_FORWARDED_FOR & Request::getTrustedHeaderSet()) {
-            $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
+            $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
             $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         }
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
@@ -186,35 +186,35 @@ public function testESIHeaderIsKeptInSubrequest()
 
     public function testESIHeaderIsKeptInSubrequestWithTrustedHeaderDisabled()
     {
-        Request::setTrustedProxies(array(), Request::HEADER_FORWARDED);
+        Request::setTrustedProxies([], Request::HEADER_FORWARDED);
 
         $this->testESIHeaderIsKeptInSubrequest();
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     public function testHeadersPossiblyResultingIn304AreNotAssignedToSubrequest()
     {
         $expectedSubRequest = Request::create('/');
-        $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
-        $request = Request::create('/', 'GET', array(), array(), array(), array('HTTP_IF_MODIFIED_SINCE' => 'Fri, 01 Jan 2016 00:00:00 GMT', 'HTTP_IF_NONE_MATCH' => '*'));
+        $request = Request::create('/', 'GET', [], [], [], ['HTTP_IF_MODIFIED_SINCE' => 'Fri, 01 Jan 2016 00:00:00 GMT', 'HTTP_IF_NONE_MATCH' => '*']);
         $strategy->render('/', $request);
     }
 
     public function testFirstTrustedProxyIsSetAsRemote()
     {
-        Request::setTrustedProxies(array('1.1.1.1'), -1);
+        Request::setTrustedProxies(['1.1.1.1'], -1);
 
         $expectedSubRequest = Request::create('/');
         $expectedSubRequest->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
         $expectedSubRequest->server->set('REMOTE_ADDR', '127.0.0.1');
-        $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
@@ -224,7 +224,7 @@ public function testFirstTrustedProxyIsSetAsRemote()
         $request->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
         $strategy->render('/', $request);
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     public function testIpAddressOfRangedTrustedProxyIsSetAsRemote()
@@ -232,12 +232,12 @@ public function testIpAddressOfRangedTrustedProxyIsSetAsRemote()
         $expectedSubRequest = Request::create('/');
         $expectedSubRequest->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
         $expectedSubRequest->server->set('REMOTE_ADDR', '127.0.0.1');
-        $expectedSubRequest->headers->set('x-forwarded-for', array('127.0.0.1'));
-        $expectedSubRequest->headers->set('forwarded', array('for="127.0.0.1";host="localhost";proto=http'));
+        $expectedSubRequest->headers->set('x-forwarded-for', ['127.0.0.1']);
+        $expectedSubRequest->headers->set('forwarded', ['for="127.0.0.1";host="localhost";proto=http']);
         $expectedSubRequest->server->set('HTTP_X_FORWARDED_FOR', '127.0.0.1');
         $expectedSubRequest->server->set('HTTP_FORWARDED', 'for="127.0.0.1";host="localhost";proto=http');
 
-        Request::setTrustedProxies(array('1.1.1.1/24'), -1);
+        Request::setTrustedProxies(['1.1.1.1/24'], -1);
 
         $strategy = new InlineFragmentRenderer($this->getKernelExpectingRequest($expectedSubRequest));
 
@@ -245,7 +245,7 @@ public function testIpAddressOfRangedTrustedProxyIsSetAsRemote()
         $request->headers->set('Surrogate-Capability', 'abc="ESI/1.0"');
         $strategy->render('/', $request);
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
     /**
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php
index ff30e8b0fa61..ca7cae420548 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpKernelTest.php
@@ -104,7 +104,7 @@ public function testHandleHttpException()
             $event->setResponse(new Response($event->getException()->getMessage()));
         });
 
-        $kernel = $this->getHttpKernel($dispatcher, function () { throw new MethodNotAllowedHttpException(array('POST')); });
+        $kernel = $this->getHttpKernel($dispatcher, function () { throw new MethodNotAllowedHttpException(['POST']); });
         $response = $kernel->handle(new Request());
 
         $this->assertEquals('405', $response->getStatusCode());
@@ -113,12 +113,12 @@ public function testHandleHttpException()
 
     public function getStatusCodes()
     {
-    
10000
    return array(
-            array(200, 404),
-            array(404, 200),
-            array(301, 200),
-            array(500, 200),
-        );
+        return [
+            [200, 404],
+            [404, 200],
+            [301, 200],
+            [500, 200],
+        ];
     }
 
     /**
@@ -140,11 +140,11 @@ public function testHandleWhenAnExceptionIsHandledWithASpecificStatusCode($expec
 
     public function getSpecificStatusCodes()
     {
-        return array(
-            array(200),
-            array(302),
-            array(403),
-        );
+        return [
+            [200],
+            [302],
+            [403],
+        ];
     }
 
     public function testHandleWhenAListenerReturnsAResponse()
@@ -198,7 +198,7 @@ public function testHandleWhenTheControllerIsAFunction()
     public function testHandleWhenTheControllerIsAnArray()
     {
         $dispatcher = new EventDispatcher();
-        $kernel = $this->getHttpKernel($dispatcher, array(new TestController(), 'controller'));
+        $kernel = $this->getHttpKernel($dispatcher, [new TestController(), 'controller']);
 
         $this->assertResponseEquals(new Response('foo'), $kernel->handle(new Request()));
     }
@@ -206,7 +206,7 @@ public function testHandleWhenTheControllerIsAnArray()
     public function testHandleWhenTheControllerIsAStaticArray()
     {
         $dispatcher = new EventDispatcher();
-        $kernel = $this->getHttpKernel($dispatcher, array('Symfony\Component\HttpKernel\Tests\TestController', 'staticcontroller'));
+        $kernel = $this->getHttpKernel($dispatcher, ['Symfony\Component\HttpKernel\Tests\TestController', 'staticcontroller']);
 
         $this->assertResponseEquals(new Response('foo'), $kernel->handle(new Request()));
     }
@@ -249,7 +249,7 @@ public function testHandleAllowChangingControllerArguments()
     {
         $dispatcher = new EventDispatcher();
         $dispatcher->addListener(KernelEvents::CONTROLLER_ARGUMENTS, function (FilterControllerArgumentsEvent $event) {
-            $event->setArguments(array('foo'));
+            $event->setArguments(['foo']);
         });
 
         $kernel = $this->getHttpKernel($dispatcher, function ($content) { return new Response($content); });
@@ -273,12 +273,12 @@ public function testHandleAllowChangingControllerAndArguments()
             };
 
             $event->setController($newController);
-            $event->setArguments(array('bar'));
+            $event->setArguments(['bar']);
         });
 
-        $kernel = $this->getHttpKernel($dispatcher, function ($content) { return new Response($content); }, null, array('foo'));
+        $kernel = $this->getHttpKernel($dispatcher, function ($content) { return new Response($content); }, null, ['foo']);
 
-        $this->assertResponseEquals(new Response('foo', 200, array('X-Id' => 'bar')), $kernel->handle(new Request()));
+        $this->assertResponseEquals(new Response('foo', 200, ['X-Id' => 'bar']), $kernel->handle(new Request()));
     }
 
     public function testTerminate()
@@ -303,7 +303,7 @@ public function testVerifyRequestStackPushPopDuringHandle()
     {
         $request = new Request();
 
-        $stack = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestStack')->setMethods(array('push', 'pop'))->getMock();
+        $stack = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestStack')->setMethods(['push', 'pop'])->getMock();
         $stack->expects($this->at(0))->method('push')->with($this->equalTo($request));
         $stack->expects($this->at(1))->method('pop');
 
@@ -319,7 +319,7 @@ public function testVerifyRequestStackPushPopDuringHandle()
     public function testInconsistentClientIpsOnMasterRequests()
     {
         $request = new Request();
-        $request->setTrustedProxies(array('1.1.1.1'), Request::HEADER_X_FORWARDED_FOR | Request::HEADER_FORWARDED);
+        $request->setTrustedProxies(['1.1.1.1'], Request::HEADER_X_FORWARDED_FOR | Request::HEADER_FORWARDED);
         $request->server->set('REMOTE_ADDR', '1.1.1.1');
         $request->headers->set('FORWARDED', 'for=2.2.2.2');
         $request->headers->set('X_FORWARDED_FOR', '3.3.3.3');
@@ -332,10 +332,10 @@ public function testInconsistentClientIpsOnMasterRequests()
         $kernel = $this->getHttpKernel($dispatcher);
         $kernel->handle($request, $kernel::MASTER_REQUEST, false);
 
-        Request::setTrustedProxies(array(), -1);
+        Request::setTrustedProxies([], -1);
     }
 
-    private function getHttpKernel(EventDispatcherInterface $eventDispatcher, $controller = null, RequestStack $requestStack = null, array $arguments = array())
+    private function getHttpKernel(EventDispatcherInterface $eventDispatcher, $controller = null, RequestStack $requestStack = null, array $arguments = [])
     {
         if (null === $controller) {
             $controller = function () { return new Response('Hello'); };
diff --git a/src/Symfony/Component/HttpKernel/Tests/KernelTest.php b/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
index 8926f20878c5..7aa41b9627f0 100644
--- a/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
@@ -91,7 +91,7 @@ public function testInitializeContainerClearsOldContainers()
 
     public function testBootInitializesBundlesAndContainer()
     {
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer']);
         $kernel->expects($this->once())
             ->method('initializeBundles');
         $kernel->expects($this->once())
@@ -106,10 +106,10 @@ public function testBootSetsTheContainerToTheBundles()
         $bundle->expects($this->once())
             ->method('setContainer');
 
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer', 'getBundles'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer', 'getBundles']);
         $kernel->expects($this->once())
             ->method('getBundles')
-            ->will($this->returnValue(array($bundle)));
+            ->will($this->returnValue([$bundle]));
 
         $kernel->boot();
     }
@@ -117,7 +117,7 @@ public function testBootSetsTheContainerToTheBundles()
     public function testBootSetsTheBootedFlagToTrue()
     {
         // use test kernel to access isBooted()
-        $kernel = $this->getKernelForTest(array('initializeBundles', 'initializeContainer'));
+        $kernel = $this->getKernelForTest(['initializeBundles', 'initializeContainer']);
         $kernel->boot();
 
         $this->assertTrue($kernel->isBooted());
@@ -125,7 +125,7 @@ public function testBootSetsTheBootedFlagToTrue()
 
     public function testClassCacheIsNotLoadedByDefault()
     {
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer', 'doLoadClassCache'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer', 'doLoadClassCache']);
         $kernel->expects($this->never())
             ->method('doLoadClassCache');
 
@@ -134,7 +134,7 @@ public function testClassCacheIsNotLoadedByDefault()
 
     public function testBootKernelSeveralTimesOnlyInitializesBundlesOnce()
     {
-        $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer'));
+        $kernel = $this->getKernel(['initializeBundles', 'initializeContainer']);
         $kernel->expects($this->once())
             ->method('initializeBundles');
 
@@ -148,7 +148,7 @@ public function testShutdownCallsShutdownOnAllBundles()
         $bundle->expects($this->once())
             ->method('shutdown');
 
-        $kernel = $this->getKernel(array(), array($bundle));
+        $kernel = $this->getKernel([], [$bundle]);
 
         $kernel->boot();
         $kernel->shutdown();
@@ -161,10 +161,10 @@ public function testShutdownGivesNullContainerToAllBundles()
             ->method('setContainer')
             ->with(null);
 
-        $kernel = $this->getKernel(array('getBundles'));
+        $kernel = $this->getKernel(['getBundles']);
         $kernel->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array($bundle)));
+            ->will($this->returnValue([$bundle]));
 
         $kernel->boot();
         $kernel->shutdown();
@@ -184,7 +184,7 @@ public function testHandleCallsHandleOnHttpKernel()
             ->method('handle')
             ->with($request, $type, $catch);
 
-        $kernel = $this->getKernel(array('getHttpKernel'));
+        $kernel = $this->getKernel(['getHttpKernel']);
         $kernel->expects($this->once())
             ->method('getHttpKernel')
             ->will($this->returnValue($httpKernelMock));
@@ -202,7 +202,7 @@ public function testHandleBootsTheKernel()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $kernel = $this->getKernel(array('getHttpKernel', 'boot'));
+        $kernel = $this->getKernel(['getHttpKernel', 'boot']);
         $kernel->expects($this->once())
             ->method('getHttpKernel')
             ->will($this->returnValue($httpKernelMock));
@@ -322,7 +322,7 @@ public function testSerialize()
         $debug = true;
         $kernel = new KernelForTest($env, $debug);
 
-        $expected = serialize(array($env, $debug));
+        $expected = serialize([$env, $debug]);
         $this->assertEquals($expected, $kernel->serialize());
     }
 
@@ -355,7 +355,7 @@ public function testLocateResourceThrowsExceptionWhenBundleDoesNotExist()
      */
     public function testLocateResourceThrowsExceptionWhenResourceDoesNotExist()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
@@ -367,7 +367,7 @@ public function testLocateResourceThrowsExceptionWhenResourceDoesNotExist()
 
     public function testLocateResourceReturnsTheFirstThatMatches()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
@@ -379,7 +379,7 @@ public function testLocateResourceReturnsTheFirstThatMatches()
 
     public function testLocateResourceIgnoresDirOnNonResource()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
@@ -394,7 +394,7 @@ public function testLocateResourceIgnoresDirOnNonResource()
 
     public function testLocateResourceReturnsTheDirOneForResources()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->once())
             ->method('getBundle')
@@ -409,7 +409,7 @@ public function testLocateResourceReturnsTheDirOneForResources()
 
     public function testLocateResourceOnDirectories()
     {
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->exactly(2))
             ->method('getBundle')
@@ -425,7 +425,7 @@ public function testLocateResourceOnDirectories()
             $kernel->locateResource('@FooBundle/Resources', __DIR__.'/Fixtures/Resources')
         );
 
-        $kernel = $this->getKernel(array('getBundle'));
+        $kernel = $this->getKernel(['getBundle']);
         $kernel
             ->expects($this->exactly(2))
             ->method('getBundle')
@@ -451,13 +451,13 @@ public function testInitializeBundleThrowsExceptionWhenRegisteringTwoBundlesWith
         $fooBundle = $this->getBundle(null, null, 'FooBundle', 'DuplicateName');
         $barBundle = $this->getBundle(null, null, 'BarBundle', 'DuplicateName');
 
-        $kernel = $this->getKernel(array(), array($fooBundle, $barBundle));
+        $kernel = $this->getKernel([], [$fooBundle, $barBundle]);
         $kernel->boot();
     }
 
     public function testTerminateReturnsSilentlyIfKernelIsNotBooted()
     {
-        $kernel = $this->getKernel(array('getHttpKernel'));
+        $kernel = $this->getKernel(['getHttpKernel']);
         $kernel->expects($this->never())
             ->method('getHttpKernel');
 
@@ -469,7 +469,7 @@ public function testTerminateDelegatesTerminationOnlyForTerminableInterface()
         // does not implement TerminableInterface
         $httpKernel = new TestKernel();
 
-        $kernel = $this->getKernel(array('getHttpKernel'));
+        $kernel = $this->getKernel(['getHttpKernel']);
         $kernel->expects($this->once())
             ->method('getHttpKernel')
             ->willReturn($httpKernel);
@@ -482,14 +482,14 @@ public function testTerminateDelegatesTerminationOnlyForTerminableInterface()
         // implements TerminableInterface
         $httpKernelMock = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernel')
             ->disableOriginalConstructor()
-            ->setMethods(array('terminate'))
+            ->setMethods(['terminate'])
             ->getMock();
 
         $httpKernelMock
             ->expects($this->once())
             ->method('terminate');
 
-        $kernel = $this->getKernel(array('getHttpKernel'));
+        $kernel = $this->getKernel(['getHttpKernel']);
         $kernel->expects($this->exactly(2))
             ->method('getHttpKernel')
             ->will($this->returnValue($httpKernelMock));
@@ -570,7 +570,7 @@ public function testServicesResetter()
             $container->addCompilerPass(new ResettableServicePass());
             $container->register('one', ResettableService::class)
                 ->setPublic(true)
-                ->addTag('kernel.reset', array('method' => 'reset'));
+                ->addTag('kernel.reset', ['method' => 'reset']);
             $container->register('services_resetter', ServicesResetter::class)->setPublic(true);
         }, $httpKernelMock, 'resetting');
 
@@ -594,7 +594,7 @@ public function testServicesResetter()
      */
     public function testKernelStartTimeIsResetWhileBootingAlreadyBootedKernel()
     {
-        $kernel = $this->getKernelForTest(array('initializeBundles'), true);
+        $kernel = $this->getKernelForTest(['initializeBundles'], true);
         $kernel->boot();
         $preReBoot = $kernel->getStartTime();
 
@@ -613,7 +613,7 @@ protected function getBundle($dir = null, $parent = null, $className = null, $bu
     {
         $bundle = $this
             ->getMockBuilder('Symfony\Component\HttpKernel\Bundle\BundleInterface')
-            ->setMethods(array('getPath', 'getParent', 'getName'))
+            ->setMethods(['getPath', 'getParent', 'getName'])
             ->disableOriginalConstructor()
         ;
 
@@ -652,14 +652,14 @@ protected function getBundle($dir = null, $parent = null, $className = null, $bu
      *
      * @return Kernel
      */
-    protected function getKernel(array $methods = array(), array $bundles = array())
+    protected function getKernel(array $methods = [], array $bundles = [])
     {
         $methods[] = 'registerBundles';
 
         $kernel = $this
             ->getMockBuilder('Symfony\Component\HttpKernel\Kernel')
             ->setMethods($methods)
-            ->setConstructorArgs(array('test', false))
+            ->setConstructorArgs(['test', false])
             ->getMockForAbstractClass()
         ;
         $kernel->expects($this->any())
@@ -673,10 +673,10 @@ protected function getKernel(array $methods = array(), array $bundles = array())
         return $kernel;
     }
 
-    protected function getKernelForTest(array $methods = array(), $debug = false)
+    protected function getKernelForTest(array $methods = [], $debug = false)
     {
         $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\Tests\Fixtures\KernelForTest')
-            ->setConstructorArgs(array('test', $debug))
+            ->setConstructorArgs(['test', $debug])
             ->setMethods($methods)
             ->getMock();
         $p = new \ReflectionProperty($kernel, 'rootDir');
@@ -718,7 +718,7 @@ public function __construct(\Closure $buildContainer = null, HttpKernelInterface
 
     public function registerBundles()
     {
-        return array();
+        return [];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
diff --git a/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php b/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
index 925cb450c28e..b2caafa27a46 100644
--- a/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
+++ b/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
@@ -77,185 +77,185 @@ public function formatProvider()
     {
         $dateTime = new \DateTime('@0');
 
-        $formatData = array(
+        $formatData = [
             /* general */
-            array('y-M-d', 0, '1970-1-1'),
-            array("EEE, MMM d, ''yy", 0, "Thu, Jan 1, '70"),
-            array('h:mm a', 0, '12:00 AM'),
-            array('yyyyy.MMMM.dd hh:mm aaa', 0, '01970.January.01 12:00 AM'),
+            ['y-M-d', 0, '1970-1-1'],
+            ["EEE, MMM d, ''yy", 0, "Thu, Jan 1, '70"],
+            ['h:mm a', 0, '12:00 AM'],
+            ['yyyyy.MMMM.dd hh:mm aaa', 0, '01970.January.01 12:00 AM'],
 
             /* escaping */
-            array("'M'", 0, 'M'),
-            array("'yy'", 0, 'yy'),
-            array("'''yy'", 0, "'yy"),
-            array("''y", 0, "'1970"),
-            array("''yy", 0, "'70"),
-            array("H 'o'' clock'", 0, "0 o' clock"),
+            ["'M'", 0, 'M'],
+            ["'yy'", 0, 'yy'],
+            ["'''yy'", 0, "'yy"],
+            ["''y", 0, "'1970"],
+            ["''yy", 0, "'70"],
+            ["H 'o'' clock'", 0, "0 o' clock"],
 
             /* month */
-            array('M', 0, '1'),
-            array('MM', 0, '01'),
-            array('MMM', 0, 'Jan'),
-            array('MMMM', 0, 'January'),
-            array('MMMMM', 0, 'J'),
-            array('MMMMMM', 0, '000001'),
-
-            array('L', 0, '1'),
-            array('LL', 0, '01'),
-            array('LLL', 0, 'Jan'),
-            array('LLLL', 0, 'January'),
-            array('LLLLL', 0, 'J'),
-            array('LLLLLL', 0, '000001'),
+            ['M', 0, '1'],
+            ['MM', 0, '01'],
+            ['MMM', 0, 'Jan'],
+            ['MMMM', 0, 'January'],
+            ['MMMMM', 0, 'J'],
+            ['MMMMMM', 0, '000001'],
+
+            ['L', 0, '1'],
+            ['LL', 0, '01'],
+            ['LLL', 0, 'Jan'],
+            ['LLLL', 0, 'January'],
+            ['LLLLL', 0, 'J'],
+            ['LLLLLL', 0, '000001'],
 
             /* year */
-            array('y', 0, '1970'),
-            array('yy', 0, '70'),
-            array('yyy', 0, '1970'),
-            array('yyyy', 0, '1970'),
-            array('yyyyy', 0, '01970'),
-            array('yyyyyy', 0, '001970'),
+            ['y', 0, '1970'],
+            ['yy', 0, '70'],
+            ['yyy', 0, '1970'],
+            ['yyyy', 0, '1970'],
+            ['yyyyy', 0, '01970'],
+            ['yyyyyy', 0, '001970'],
 
             /* day */
-            array('d', 0, '1'),
-            array('dd', 0, '01'),
-            array('ddd', 0, '001'),
+            ['d', 0, '1'],
+            ['dd', 0, '01'],
+            ['ddd', 0, '001'],
 
             /* quarter */
-            array('Q', 0, '1'),
-            array('QQ', 0, '01'),
-            array('QQQ', 0, 'Q1'),
-            array('QQQQ', 0, '1st quarter'),
-            array('QQQQQ', 0, '1st quarter'),
-
-            array('q', 0, '1'),
-            array('qq', 0, '01'),
-            array('qqq', 0, 'Q1'),
-            array('qqqq', 0, '1st quarter'),
-            array('qqqqq', 0, '1st quarter'),
+            ['Q', 0, '1'],
+            ['QQ', 0, '01'],
+            ['QQQ', 0, 'Q1'],
+            ['QQQQ', 0, '1st quarter'],
+            ['QQQQQ', 0, '1st quarter'],
+
+            ['q', 0, '1'],
+            ['qq', 0, '01'],
+            ['qqq', 0, 'Q1'],
+            ['qqqq', 0, '1st quarter'],
+            ['qqqqq', 0, '1st quarter'],
 
             // 4 months
-            array('Q', 7776000, '2'),
-            array('QQ', 7776000, '02'),
-            array('QQQ', 7776000, 'Q2'),
-            array('QQQQ', 7776000, '2nd quarter'),
+            ['Q', 7776000, '2'],
+            ['QQ', 7776000, '02'],
+            ['QQQ', 7776000, 'Q2'],
+            ['QQQQ', 7776000, '2nd quarter'],
 
             // 7 months
-            array('QQQQ', 15638400, '3rd quarter'),
+            ['QQQQ', 15638400, '3rd quarter'],
 
             // 10 months
-            array('QQQQ', 23587200, '4th quarter'),
+            ['QQQQ', 23587200, '4th quarter'],
 
             /* 12-hour (1-12) */
-            array('h', 0, '12'),
-            array('hh', 0, '12'),
-            array('hhh', 0, '012'),
+            ['h', 0, '12'],
+            ['hh', 0, '12'],
+            ['hhh', 0, '012'],
 
-            array('h', 1, '12'),
-            array('h', 3600, '1'),
-            array('h', 43200, '12'), // 12 hours
+            ['h', 1, '12'],
+            ['h', 3600, '1'],
+            ['h', 43200, '12'], // 12 hours
 
             /* day of year */
-            array('D', 0, '1'),
-            array('D', 86400, '2'), // 1 day
-            array('D', 31536000, '1'), // 1 year
-            array('D', 31622400, '2'), // 1 year + 1 day
+            ['D', 0, '1'],
+            ['D', 86400, '2'], // 1 day
+            ['D', 31536000, '1'], // 1 year
+            ['D', 31622400, '2'], // 1 year + 1 day
 
             /* day of week */
-            array('E', 0, 'Thu'),
-            array('EE', 0, 'Thu'),
-            array('EEE', 0, 'Thu'),
-            array('EEEE', 0, 'Thursday'),
-            array('EEEEE', 0, 'T'),
-            array('EEEEEE', 0, 'Th'),
+            ['E', 0, 'Thu'],
+            ['EE', 0, 'Thu'],
+            ['EEE', 0, 'Thu'],
+            ['EEEE', 0, 'Thursday'],
+            ['EEEEE', 0, 'T'],
+            ['EEEEEE', 0, 'Th'],
 
-            array('E', 1296540000, 'Tue'), // 2011-02-01
-            array('E', 1296950400, 'Sun'), // 2011-02-06
+            ['E', 1296540000, 'Tue'], // 2011-02-01
+            ['E', 1296950400, 'Sun'], // 2011-02-06
 
             /* am/pm marker */
-            array('a', 0, 'AM'),
-            array('aa', 0, 'AM'),
-            array('aaa', 0, 'AM'),
-            array('aaaa', 0, 'AM'),
+            ['a', 0, 'AM'],
+            ['aa', 0, 'AM'],
+            ['aaa', 0, 'AM'],
+            ['aaaa', 0, 'AM'],
 
             // 12 hours
-            array('a', 43200, 'PM'),
-            array('aa', 43200, 'PM'),
-            array('aaa', 43200, 'PM'),
-            array('aaaa', 43200, 'PM'),
+            ['a', 43200, 'PM'],
+            ['aa', 43200, 'PM'],
+            ['aaa', 43200, 'PM'],
+            ['aaaa', 43200, 'PM'],
 
             /* 24-hour (0-23) */
-            array('H', 0, '0'),
-            array('HH', 0, '00'),
-            array('HHH', 0, '000'),
+            ['H', 0, '0'],
+            ['HH', 0, '00'],
+            ['HHH', 0, '000'],
 
-            array('H', 1, '0'),
-            array('H', 3600, '1'),
-            array('H', 43200, '12'),
-            array('H', 46800, '13'),
+            ['H', 1, '0'],
+            ['H', 3600, '1'],
+            ['H', 43200, '12'],
+            ['H', 46800, '13'],
 
             /* 24-hour (1-24) */
-            array('k', 0, '24'),
-            array('kk', 0, '24'),
-            array('kkk', 0, '024'),
+            ['k', 0, '24'],
+            ['kk', 0, '24'],
+            ['kkk', 0, '024'],
 
-            array('k', 1, '24'),
-            array('k', 3600, '1'),
-            array('k', 43200, '12'),
-            array('k', 46800, '13'),
+            ['k', 1, '24'],
+            ['k', 3600, '1'],
+            ['k', 43200, '12'],
+            ['k', 46800, '13'],
 
             /* 12-hour (0-11) */
-            array('K', 0, '0'),
-            array('KK', 0, '00'),
-            array('KKK', 0, '000'),
+            ['K', 0, '0'],
+            ['KK', 0, '00'],
+            ['KKK', 0, '000'],
 
-            array('K', 1, '0'),
-            array('K', 3600, '1'),
-            array('K', 43200, '0'), // 12 hours
+            ['K', 1, '0'],
+            ['K', 3600, '1'],
+            ['K', 43200, '0'], // 12 hours
 
             /* minute */
-            array('m', 0, '0'),
-            array('mm', 0, '00'),
-            array('mmm', 0, '000'),
-
-            array('m', 1, '0'),
-            array('m', 60, '1'),
-            array('m', 120, '2'),
-            array('m', 180, '3'),
-            array('m', 3600, '0'),
-            array('m', 3660, '1'),
-            array('m', 43200, '0'), // 12 hours
+            ['m', 0, '0'],
+            ['mm', 0, '00'],
+            ['mmm', 0, '000'],
+
+            ['m', 1, '0'],
+            ['m', 60, '1'],
+            ['m', 120, '2'],
+            ['m', 180, '3'],
+            ['m', 3600, '0'],
+            ['m', 3660, '1'],
+            ['m', 43200, '0'], // 12 hours
 
             /* second */
-            array('s', 0, '0'),
-            array('ss', 0, '00'),
-            array('sss', 0, '000'),
-
-            array('s', 1, '1'),
-            array('s', 2, '2'),
-            array('s', 5, '5'),
-            array('s', 30, '30'),
-            array('s', 59, '59'),
-            array('s', 60, '0'),
-            array('s', 120, '0'),
-            array('s', 180, '0'),
-            array('s', 3600, '0'),
-            array('s', 3601, '1'),
-            array('s', 3630, '30'),
-            array('s', 43200, '0'), // 12 hours
-        );
+            ['s', 0, '0'],
+            ['ss', 0, '00'],
+            ['sss', 0, '000'],
+
+            ['s', 1, '1'],
+            ['s', 2, '2'],
+            ['s', 5, '5'],
+            ['s', 30, '30'],
+            ['s', 59, '59'],
+            ['s', 60, '0'],
+            ['s', 120, '0'],
+            ['s', 180, '0'],
+            ['s', 3600, '0'],
+            ['s', 3601, '1'],
+            ['s', 3630, '30'],
+            ['s', 43200, '0'], // 12 hours
+        ];
 
         /* general, DateTime */
-        $formatData[] = array('y-M-d', $dateTime, '1970-1-1');
-        $formatData[] = array("EEE, MMM d, ''yy", $dateTime, "Thu, Jan 1, '70");
-        $formatData[] = array('h:mm a', $dateTime, '12:00 AM');
-        $formatData[] = array('yyyyy.MMMM.dd hh:mm aaa', $dateTime, '01970.January.01 12:00 AM');
+        $formatData[] = ['y-M-d', $dateTime, '1970-1-1'];
+        $formatData[] = ["EEE, MMM d, ''yy", $dateTime, "Thu, Jan 1, '70"];
+        $formatData[] = ['h:mm a', $dateTime, '12:00 AM'];
+        $formatData[] = ['yyyyy.MMMM.dd hh:mm aaa', $dateTime, '01970.January.01 12:00 AM'];
 
         if (IcuVersion::compare(Intl::getIcuVersion(), '59.1', '>=', 1)) {
             // Before ICU 59.1 GMT was used instead of UTC
-            $formatData[] = array("yyyy.MM.dd 'at' HH:mm:ss zzz", 0, '1970.01.01 at 00:00:00 UTC');
-            $formatData[] = array('K:mm a, z', 0, '0:00 AM, UTC');
-            $formatData[] = array("yyyy.MM.dd 'at' HH:mm:ss zzz", $dateTime, '1970.01.01 at 00:00:00 UTC');
-            $formatData[] = array('K:mm a, z', $dateTime, '0:00 AM, UTC');
+            $formatData[] = ["yyyy.MM.dd 'at' HH:mm:ss zzz", 0, '1970.01.01 at 00:00:00 UTC'];
+            $formatData[] = ['K:mm a, z', 0, '0:00 AM, UTC'];
+            $formatData[] = ["yyyy.MM.dd 'at' HH:mm:ss zzz", $dateTime, '1970.01.01 at 00:00:00 UTC'];
+            $formatData[] = ['K:mm a, z', $dateTime, '0:00 AM, UTC'];
         }
 
         return $formatData;
@@ -285,9 +285,9 @@ public function testFormatIllegalArgumentError($pattern, $timestamp, $errorMessa
 
     public function formatErrorProvider()
     {
-        return array(
-            array('y-M-d', 'foobar', 'datefmt_format: string \'foobar\' is not numeric, which would be required for it to be a valid date: U_ILLEGAL_ARGUMENT_ERROR'),
-        );
+        return [
+            ['y-M-d', 'foobar', 'datefmt_format: string \'foobar\' is not numeric, which would be required for it to be a valid date: U_ILLEGAL_ARGUMENT_ERROR'],
+        ];
     }
 
     /**
@@ -302,31 +302,31 @@ public function testFormatWithTimezone($timestamp, $timezone, $expected)
 
     public function formatWithTimezoneProvider()
     {
-        $data = array(
-            array(0, 'UTC', '1970-01-01 00:00:00'),
-            array(0, 'GMT', '1970-01-01 00:00:00'),
-            array(0, 'GMT-03:00', '1969-12-31 21:00:00'),
-            array(0, 'GMT+03:00', '1970-01-01 03:00:00'),
-            array(0, 'Europe/Zurich', '1970-01-01 01:00:00'),
-            array(0, 'Europe/Paris', '1970-01-01 01:00:00'),
-            array(0, 'Africa/Cairo', '1970-01-01 02:00:00'),
-            array(0, 'Africa/Casablanca', '1970-01-01 00:00:00'),
-            array(0, 'Africa/Djibouti', '1970-01-01 03:00:00'),
-            array(0, 'Africa/Johannesburg', '1970-01-01 02:00:00'),
-            array(0, 'America/Antigua', '1969-12-31 20:00:00'),
-            array(0, 'America/Toronto', '1969-12-31 19:00:00'),
-            array(0, 'America/Vancouver', '1969-12-31 16:00:00'),
-            array(0, 'Asia/Aqtau', '1970-01-01 05:00:00'),
-            array(0, 'Asia/Bangkok', '1970-01-01 07:00:00'),
-            array(0, 'Asia/Dubai', '1970-01-01 04:00:00'),
-            array(0, 'Australia/Brisbane', '1970-01-01 10:00:00'),
-            array(0, 'Australia/Eucla', '1970-01-01 08:45:00'),
-            array(0, 'Australia/Melbourne', '1970-01-01 10:00:00'),
-            array(0, 'Europe/Berlin', '1970-01-01 01:00:00'),
-            array(0, 'Europe/Dublin', '1970-01-01 01:00:00'),
-            array(0, 'Europe/Warsaw', '1970-01-01 01:00:00'),
-            array(0, 'Pacific/Fiji', '1970-01-01 12:00:00'),
-        );
+        $data = [
+            [0, 'UTC', '1970-01-01 00:00:00'],
+            [0, 'GMT', '1970-01-01 00:00:00'],
+            [0, 'GMT-03:00', '1969-12-31 21:00:00'],
+            [0, 'GMT+03:00', '1970-01-01 03:00:00'],
+            [0, 'Europe/Zurich', '1970-01-01 01:00:00'],
+            [0, 'Europe/Paris', '1970-01-01 01:00:00'],
+            [0, 'Africa/Cairo', '1970-01-01 02:00:00'],
+            [0, 'Africa/Casablanca', '1970-01-01 00:00:00'],
+            [0, 'Africa/Djibouti', '1970-01-01 03:00:00'],
+            [0, 'Africa/Johannesburg', '1970-01-01 02:00:00'],
+            [0, 'America/Antigua', '1969-12-31 20:00:00'],
+            [0, 'America/Toronto', '1969-12-31 19:00:00'],
+            [0, 'America/Vancouver', '1969-12-31 16:00:00'],
+            [0, 'Asia/Aqtau', '1970-01-01 05:00:00'],
+            [0, 'Asia/Bangkok', '1970-01-01 07:00:00'],
+            [0, 'Asia/Dubai', '1970-01-01 04:00:00'],
+            [0, 'Australia/Brisbane', '1970-01-01 10:00:00'],
+            [0, 'Australia/Eucla', '1970-01-01 08:45:00'],
+            [0, 'Australia/Melbourne', '1970-01-01 10:00:00'],
+            [0, 'Europe/Berlin', '1970-01-01 01:00:00'],
+            [0, 'Europe/Dublin', '1970-01-01 01:00:00'],
+            [0, 'Europe/Warsaw', '1970-01-01 01:00:00'],
+            [0, 'Pacific/Fiji', '1970-01-01 12:00:00'],
+        ];
 
         return $data;
     }
@@ -344,52 +344,52 @@ public function testFormatTimezone($pattern, $timezone, $expected)
 
     public function formatTimezoneProvider()
     {
-        return array(
-            array('z', 'GMT', 'GMT'),
-            array('zz', 'GMT', 'GMT'),
-            array('zzz', 'GMT', 'GMT'),
-            array('zzzz', 'GMT', 'Greenwich Mean Time'),
-            array('zzzzz', 'GMT', 'Greenwich Mean Time'),
-
-            array('z', 'Etc/GMT', 'GMT'),
-            array('zz', 'Etc/GMT', 'GMT'),
-            array('zzz', 'Etc/GMT', 'GMT'),
-            array('zzzz', 'Etc/GMT', 'Greenwich Mean Time'),
-            array('zzzzz', 'Etc/GMT', 'Greenwich Mean Time'),
-
-            array('z', 'Etc/GMT+3', 'GMT-3'),
-            array('zz', 'Etc/GMT+3', 'GMT-3'),
-            array('zzz', 'Etc/GMT+3', 'GMT-3'),
-            array('zzzz', 'Etc/GMT+3', 'GMT-03:00'),
-            array('zzzzz', 'Etc/GMT+3', 'GMT-03:00'),
-
-            array('z', 'UTC', 'UTC'),
-            array('zz', 'UTC', 'UTC'),
-            array('zzz', 'UTC', 'UTC'),
-            array('zzzz', 'UTC', 'Coordinated Universal Time'),
-            array('zzzzz', 'UTC', 'Coordinated Universal Time'),
-
-            array('z', 'Etc/UTC', 'UTC'),
-            array('zz', 'Etc/UTC', 'UTC'),
-            array('zzz', 'Etc/UTC', 'UTC'),
-            array('zzzz', 'Etc/UTC', 'Coordinated Universal Time'),
-            array('zzzzz', 'Etc/UTC', 'Coordinated Universal Time'),
-
-            array('z', 'Etc/Universal', 'UTC'),
-            array('z', 'Etc/Zulu', 'UTC'),
-            array('z', 'Etc/UCT', 'UTC'),
-            array('z', 'Etc/Greenwich', 'GMT'),
-            array('zzzzz', 'Etc/Universal', 'Coordinated Universal Time'),
-            array('zzzzz', 'Etc/Zulu', 'Coordinated Universal Time'),
-            array('zzzzz', 'Etc/UCT', 'Coordinated Universal Time'),
-            array('zzzzz', 'Etc/Greenwich', 'Greenwich Mean Time'),
-
-            array('z', 'GMT+03:00', 'GMT+3'),
-            array('zz', 'GMT+03:00', 'GMT+3'),
-            array('zzz', 'GMT+03:00', 'GMT+3'),
-            array('zzzz', 'GMT+03:00', 'GMT+03:00'),
-            array('zzzzz', 'GMT+03:00', 'GMT+03:00'),
-        );
+        return [
+            ['z', 'GMT', 'GMT'],
+            ['zz', 'GMT', 'GMT'],
+            ['zzz', 'GMT', 'GMT'],
+            ['zzzz', 'GMT', 'Greenwich Mean Time'],
+            ['zzzzz', 'GMT', 'Greenwich Mean Time'],
+
+            ['z', 'Etc/GMT', 'GMT'],
+            ['zz', 'Etc/GMT', 'GMT'],
+            ['zzz', 'Etc/GMT', 'GMT'],
+            ['zzzz', 'Etc/GMT', 'Greenwich Mean Time'],
+            ['zzzzz', 'Etc/GMT', 'Greenwich Mean Time'],
+
+            ['z', 'Etc/GMT+3', 'GMT-3'],
+            ['zz', 'Etc/GMT+3', 'GMT-3'],
+            ['zzz', 'Etc/GMT+3', 'GMT-3'],
+            ['zzzz', 'Etc/GMT+3', 'GMT-03:00'],
+            ['zzzzz', 'Etc/GMT+3', 'GMT-03:00'],
+
+            ['z', 'UTC', 'UTC'],
+            ['zz', 'UTC', 'UTC'],
+            ['zzz', 'UTC', 'UTC'],
+            ['zzzz', 'UTC', 'Coordinated Universal Time'],
+            ['zzzzz', 'UTC', 'Coordinated Universal Time'],
+
+            ['z', 'Etc/UTC', 'UTC'],
+            ['zz', 'Etc/UTC', 'UTC'],
+            ['zzz', 'Etc/UTC', 'UTC'],
+            ['zzzz', 'Etc/UTC', 'Coordinated Universal Time'],
+            ['zzzzz', 'Etc/UTC', 'Coordinated Universal Time'],
+
+            ['z', 'Etc/Universal', 'UTC'],
+            ['z', 'Etc/Zulu', 'UTC'],
+            ['z', 'Etc/UCT', 'UTC'],
+            ['z', 'Etc/Greenwich', 'GMT'],
+            ['zzzzz', 'Etc/Universal', 'Coordinated Universal Time'],
+            ['zzzzz', 'Etc/Zulu', 'Coordinated Universal Time'],
+            ['zzzzz', 'Etc/UCT', 'Coordinated Universal Time'],
+            ['zzzzz', 'Etc/Greenwich', 'Greenwich Mean Time'],
+
+            ['z', 'GMT+03:00', 'GMT+3'],
+            ['zz', 'GMT+03:00', 'GMT+3'],
+            ['zzz', 'GMT+03:00', 'GMT+3'],
+            ['zzzz', 'GMT+03:00', 'GMT+03:00'],
+            ['zzzzz', 'GMT+03:00', 'GMT+03:00'],
+        ];
     }
 
     public function testFormatWithGmtTimezone()
@@ -485,16 +485,16 @@ public function testDateAndTimeType($timestamp, $datetype, $timetype, $expected)
 
     public function dateAndTimeTypeProvider()
     {
-        return array(
-            array(0, IntlDateFormatter::FULL, IntlDateFormatter::NONE, 'Thursday, January 1, 1970'),
-            array(0, IntlDateFormatter::LONG, IntlDateFormatter::NONE, 'January 1, 1970'),
-            array(0, IntlDateFormatter::MEDIUM, IntlDateFormatter::NONE, 'Jan 1, 1970'),
-            array(0, IntlDateFormatter::SHORT, IntlDateFormatter::NONE, '1/1/70'),
-            array(0, IntlDateFormatter::NONE, IntlDateFormatter::FULL, '12:00:00 AM Coordinated Universal Time'),
-            array(0, IntlDateFormatter::NONE, IntlDateFormatter::LONG, '12:00:00 AM UTC'),
-            array(0, IntlDateFormatter::NONE, IntlDateFormatter::MEDIUM, '12:00:00 AM'),
-            array(0, IntlDateFormatter::NONE, IntlDateFormatter::SHORT, '12:00 AM'),
-        );
+        return [
+            [0, IntlDateFormatter::FULL, IntlDateFormatter::NONE, 'Thursday, January 1, 1970'],
+            [0, IntlDateFormatter::LONG, IntlDateFormatter::NONE, 'January 1, 1970'],
+            [0, IntlDateFormatter::MEDIUM, IntlDateFormatter::NONE, 'Jan 1, 1970'],
+            [0, IntlDateFormatter::SHORT, IntlDateFormatter::NONE, '1/1/70'],
+            [0, IntlDateFormatter::NONE, IntlDateFormatter::FULL, '12:00:00 AM Coordinated Universal Time'],
+            [0, IntlDateFormatter::NONE, IntlDateFormatter::LONG, '12:00:00 AM UTC'],
+            [0, IntlDateFormatter::NONE, IntlDateFormatter::MEDIUM, '12:00:00 AM'],
+            [0, IntlDateFormatter::NONE, IntlDateFormatter::SHORT, '12:00 AM'],
+        ];
     }
 
     public function testGetCalendar()
@@ -567,263 +567,263 @@ public function parseProvider()
 
     public function parseYearProvider()
     {
-        return array(
-            array('y-M-d', '1970-1-1', 0),
-            array('yy-M-d', '70-1-1', 0),
-        );
+        return [
+            ['y-M-d', '1970-1-1', 0],
+            ['yy-M-d', '70-1-1', 0],
+        ];
     }
 
     public function parseQuarterProvider()
     {
-        return array(
-            array('Q', '1', 0),
-            array('QQ', '01', 0),
-            array('QQQ', 'Q1', 0),
-            array('QQQQ', '1st quarter', 0),
-            array('QQQQQ', '1st quarter', 0),
-
-            array('Q', '2', 7776000),
-            array('QQ', '02', 7776000),
-            array('QQQ', 'Q2', 7776000),
-            array('QQQQ', '2nd quarter', 7776000),
-            array('QQQQQ', '2nd quarter', 7776000),
-
-            array('q', '1', 0),
-            array('qq', '01', 0),
-            array('qqq', 'Q1', 0),
-            array('qqqq', '1st quarter', 0),
-            array('qqqqq', '1st quarter', 0),
-        );
+        return [
+            ['Q', '1', 0],
+            ['QQ', '01', 0],
+            ['QQQ', 'Q1', 0],
+            ['QQQQ', '1st quarter', 0],
+            ['QQQQQ', '1st quarter', 0],
+
+            ['Q', '2', 7776000],
+            ['QQ', '02', 7776000],
+            ['QQQ', 'Q2', 7776000],
+            ['QQQQ', '2nd quarter', 7776000],
+            ['QQQQQ', '2nd quarter', 7776000],
+
+            ['q', '1', 0],
+            ['qq', '01', 0],
+            ['qqq', 'Q1', 0],
+            ['qqqq', '1st quarter', 0],
+            ['qqqqq', '1st quarter', 0],
+        ];
     }
 
     public function parseMonthProvider()
     {
-        return array(
-            array('y-M-d', '1970-1-1', 0),
-            array('y-MMM-d', '1970-Jan-1', 0),
-            array('y-MMMM-d', '1970-January-1', 0),
-        );
+        return [
+            ['y-M-d', '1970-1-1', 0],
+            ['y-MMM-d', '1970-Jan-1', 0],
+            ['y-MMMM-d', '1970-January-1', 0],
+        ];
     }
 
     public function parseStandaloneMonthProvider()
     {
-        return array(
-            array('y-L-d', '1970-1-1', 0),
-            array('y-LLL-d', '1970-Jan-1', 0),
-            array('y-LLLL-d', '1970-January-1', 0),
-        );
+        return [
+            ['y-L-d', '1970-1-1', 0],
+            ['y-LLL-d', '1970-Jan-1', 0],
+            ['y-LLLL-d', '1970-January-1', 0],
+        ];
     }
 
     public function parseDayProvider()
     {
-        return array(
-            array('y-M-d', '1970-1-1', 0),
-            array('y-M-dd', '1970-1-01', 0),
-            array('y-M-ddd', '1970-1-001', 0),
-        );
+        return [
+            ['y-M-d', '1970-1-1', 0],
+            ['y-M-dd', '1970-1-01', 0],
+            ['y-M-ddd', '1970-1-001', 0],
+        ];
     }
 
     public function parseDayOfWeekProvider()
     {
-        return array(
-            array('E', 'Thu', 0),
-            array('EE', 'Thu', 0),
-            array('EEE', 'Thu', 0),
-            array('EEEE', 'Thursday', 0),
-            array('EEEEE', 'T', 432000),
-            array('EEEEEE', 'Th', 0),
-        );
+        return [
+            ['E', 'Thu', 0],
+            ['EE', 'Thu', 0],
+            ['EEE', 'Thu', 0],
+            ['EEEE', 'Thursday', 0],
+            ['EEEEE', 'T', 432000],
+            ['EEEEEE', 'Th', 0],
+        ];
     }
 
     public function parseDayOfYearProvider()
     {
-        return array(
-            array('D', '1', 0),
-            array('D', '2', 86400),
-        );
+        return [
+            ['D', '1', 0],
+            ['D', '2', 86400],
+        ];
     }
 
     public function parseHour12ClockOneBasedProvider()
     {
-        return array(
+        return [
             // 12 hours (1-12)
-            array('y-M-d h', '1970-1-1 1', 3600),
-            array('y-M-d h', '1970-1-1 10', 36000),
-            array('y-M-d hh', '1970-1-1 11', 39600),
-            array('y-M-d hh', '1970-1-1 12', 0),
-            array('y-M-d hh a', '1970-1-1 0 AM', 0),
-            array('y-M-d hh a', '1970-1-1 1 AM', 3600),
-            array('y-M-d hh a', '1970-1-1 10 AM', 36000),
-            array('y-M-d hh a', '1970-1-1 11 AM', 39600),
-            array('y-M-d hh a', '1970-1-1 12 AM', 0),
-            array('y-M-d hh a', '1970-1-1 23 AM', 82800),
-            array('y-M-d hh a', '1970-1-1 24 AM', 86400),
-            array('y-M-d hh a', '1970-1-1 0 PM', 43200),
-            array('y-M-d hh a', '1970-1-1 1 PM', 46800),
-            array('y-M-d hh a', '1970-1-1 10 PM', 79200),
-            array('y-M-d hh a', '1970-1-1 11 PM', 82800),
-            array('y-M-d hh a', '1970-1-1 12 PM', 43200),
-            array('y-M-d hh a', '1970-1-1 23 PM', 126000),
-            array('y-M-d hh a', '1970-1-1 24 PM', 129600),
-        );
+            ['y-M-d h', '1970-1-1 1', 3600],
+            ['y-M-d h', '1970-1-1 10', 36000],
+            ['y-M-d hh', '1970-1-1 11', 39600],
+            ['y-M-d hh', '1970-1-1 12', 0],
+            ['y-M-d hh a', '1970-1-1 0 AM', 0],
+            ['y-M-d hh a', '1970-1-1 1 AM', 3600],
+            ['y-M-d hh a', '1970-1-1 10 AM', 36000],
+            ['y-M-d hh a', '1970-1-1 11 AM', 39600],
+            ['y-M-d hh a', '1970-1-1 12 AM', 0],
+            ['y-M-d hh a', '1970-1-1 23 AM', 82800],
+            ['y-M-d hh a', '1970-1-1 24 AM', 86400],
+            ['y-M-d hh a', '1970-1-1 0 PM', 43200],
+            ['y-M-d hh a', '1970-1-1 1 PM', 46800],
+            ['y-M-d hh a', '1970-1-1 10 PM', 79200],
+            ['y-M-d hh a', '1970-1-1 11 PM', 82800],
+            ['y-M-d hh a', '1970-1-1 12 PM', 43200],
+            ['y-M-d hh a', '1970-1-1 23 PM', 126000],
+            ['y-M-d hh a', '1970-1-1 24 PM', 129600],
+        ];
     }
 
     public function parseHour12ClockZeroBasedProvider()
     {
-        return array(
+        return [
             // 12 hours (0-11)
-            array('y-M-d K', '1970-1-1 1', 3600),
-            array('y-M-d K', '1970-1-1 10', 36000),
-            array('y-M-d KK', '1970-1-1 11', 39600),
-            array('y-M-d KK', '1970-1-1 12', 43200),
-            array('y-M-d KK a', '1970-1-1 0 AM', 0),
-            array('y-M-d KK a', '1970-1-1 1 AM', 3600),
-            array('y-M-d KK a', '1970-1-1 10 AM', 36000),
-            array('y-M-d KK a', '1970-1-1 11 AM', 39600),
-            array('y-M-d KK a', '1970-1-1 12 AM', 43200),
-            array('y-M-d KK a', '1970-1-1 23 AM', 82800),
-            array('y-M-d KK a', '1970-1-1 24 AM', 86400),
-            array('y-M-d KK a', '1970-1-1 0 PM', 43200),
-            array('y-M-d KK a', '1970-1-1 1 PM', 46800),
-            array('y-M-d KK a', '1970-1-1 10 PM', 79200),
-            array('y-M-d KK a', '1970-1-1 11 PM', 82800),
-            array('y-M-d KK a', '1970-1-1 12 PM', 86400),
-            array('y-M-d KK a', '1970-1-1 23 PM', 126000),
-            array('y-M-d KK a', '1970-1-1 24 PM', 129600),
-        );
+            ['y-M-d K', '1970-1-1 1', 3600],
+            ['y-M-d K', '1970-1-1 10', 36000],
+            ['y-M-d KK', '1970-1-1 11', 39600],
+            ['y-M-d KK', '1970-1-1 12', 43200],
+            ['y-M-d KK a', '1970-1-1 0 AM', 0],
+            ['y-M-d KK a', '1970-1-1 1 AM', 3600],
+            ['y-M-d KK a', '1970-1-1 10 AM', 36000],
+            ['y-M-d KK a', '1970-1-1 11 AM', 39600],
+            ['y-M-d KK a', '1970-1-1 12 AM', 43200],
+            ['y-M-d KK a', '1970-1-1 23 AM', 82800],
+            ['y-M-d KK a', '1970-1-1 24 AM', 86400],
+            ['y-M-d KK a', '1970-1-1 0 PM', 43200],
+            ['y-M-d KK a', '1970-1-1 1 PM', 46800],
+            ['y-M-d KK a', '1970-1-1 10 PM', 79200],
+            ['y-M-d KK a', '1970-1-1 11 PM', 82800],
+            ['y-M-d KK a', '1970-1-1 12 PM', 86400],
+            ['y-M-d KK a', '1970-1-1 23 PM', 126000],
+            ['y-M-d KK a', '1970-1-1 24 PM', 129600],
+        ];
     }
 
     public function parseHour24ClockOneBasedProvider()
     {
-        return array(
+        return [
             // 24 hours (1-24)
-            array('y-M-d k', '1970-1-1 1', 3600),
-            array('y-M-d k', '1970-1-1 10', 36000),
-            array('y-M-d kk', '1970-1-1 11', 39600),
-            array('y-M-d kk', '1970-1-1 12', 43200),
-            array('y-M-d kk', '1970-1-1 23', 82800),
-            array('y-M-d kk', '1970-1-1 24', 0),
-            array('y-M-d kk a', '1970-1-1 0 AM', 0),
-            array('y-M-d kk a', '1970-1-1 1 AM', 0),
-            array('y-M-d kk a', '1970-1-1 10 AM', 0),
-            array('y-M-d kk a', '1970-1-1 11 AM', 0),
-            array('y-M-d kk a', '1970-1-1 12 AM', 0),
-            array('y-M-d kk a', '1970-1-1 23 AM', 0),
-            array('y-M-d kk a', '1970-1-1 24 AM', 0),
-            array('y-M-d kk a', '1970-1-1 0 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 1 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 10 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 11 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 12 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 23 PM', 43200),
-            array('y-M-d kk a', '1970-1-1 24 PM', 43200),
-        );
+            ['y-M-d k', '1970-1-1 1', 3600],
+            ['y-M-d k', '1970-1-1 10', 36000],
+            ['y-M-d kk', '1970-1-1 11', 39600],
+            ['y-M-d kk', '1970-1-1 12', 43200],
+            ['y-M-d kk', '1970-1-1 23', 82800],
+            ['y-M-d kk', '1970-1-1 24', 0],
+            ['y-M-d kk a', '1970-1-1 0 AM', 0],
+            ['y-M-d kk a', '1970-1-1 1 AM', 0],
+            ['y-M-d kk a', '1970-1-1 10 AM', 0],
+            ['y-M-d kk a', '1970-1-1 11 AM', 0],
+            ['y-M-d kk a', '1970-1-1 12 AM', 0],
+            ['y-M-d kk a', '1970-1-1 23 AM', 0],
+            ['y-M-d kk a', '1970-1-1 24 AM', 0],
+            ['y-M-d kk a', '1970-1-1 0 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 1 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 10 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 11 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 12 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 23 PM', 43200],
+            ['y-M-d kk a', '1970-1-1 24 PM', 43200],
+        ];
     }
 
     public function parseHour24ClockZeroBasedProvider()
     {
-        return array(
+        return [
             // 24 hours (0-23)
-            array('y-M-d H', '1970-1-1 0', 0),
-            array('y-M-d H', '1970-1-1 1', 3600),
-            array('y-M-d H', '1970-1-1 10', 36000),
-            array('y-M-d HH', '1970-1-1 11', 39600),
-            array('y-M-d HH', '1970-1-1 12', 43200),
-            array('y-M-d HH', '1970-1-1 23', 82800),
-            array('y-M-d HH a', '1970-1-1 0 AM', 0),
-            array('y-M-d HH a', '1970-1-1 1 AM', 0),
-            array('y-M-d HH a', '1970-1-1 10 AM', 0),
-            array('y-M-d HH a', '1970-1-1 11 AM', 0),
-            array('y-M-d HH a', '1970-1-1 12 AM', 0),
-            array('y-M-d HH a', '1970-1-1 23 AM', 0),
-            array('y-M-d HH a', '1970-1-1 24 AM', 0),
-            array('y-M-d HH a', '1970-1-1 0 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 1 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 10 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 11 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 12 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 23 PM', 43200),
-            array('y-M-d HH a', '1970-1-1 24 PM', 43200),
-        );
+            ['y-M-d H', '1970-1-1 0', 0],
+            ['y-M-d H', '1970-1-1 1', 3600],
+            ['y-M-d H', '1970-1-1 10', 36000],
+            ['y-M-d HH', '1970-1-1 11', 39600],
+            ['y-M-d HH', '1970-1-1 12', 43200],
+            ['y-M-d HH', '1970-1-1 23', 82800],
+            ['y-M-d HH a', '1970-1-1 0 AM', 0],
+            ['y-M-d HH a', '1970-1-1 1 AM', 0],
+            ['y-M-d HH a', '1970-1-1 10 AM', 0],
+            ['y-M-d HH a', '1970-1-1 11 AM', 0],
+            ['y-M-d HH a', '1970-1-1 12 AM', 0],
+            ['y-M-d HH a', '1970-1-1 23 AM', 0],
+            ['y-M-d HH a', '1970-1-1 24 AM', 0],
+            ['y-M-d HH a', '1970-1-1 0 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 1 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 10 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 11 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 12 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 23 PM', 43200],
+            ['y-M-d HH a', '1970-1-1 24 PM', 43200],
+        ];
     }
 
     public function parseMinuteProvider()
     {
-        return array(
-            array('y-M-d HH:m', '1970-1-1 0:1', 60),
-            array('y-M-d HH:mm', '1970-1-1 0:10', 600),
-        );
+        return [
+            ['y-M-d HH:m', '1970-1-1 0:1', 60],
+            ['y-M-d HH:mm', '1970-1-1 0:10', 600],
+        ];
     }
 
     public function parseSecondProvider()
     {
-        return array(
-            array('y-M-d HH:mm:s', '1970-1-1 00:01:1', 61),
-            array('y-M-d HH:mm:ss', '1970-1-1 00:01:10', 70),
-        );
+        return [
+            ['y-M-d HH:mm:s', '1970-1-1 00:01:1', 61],
+            ['y-M-d HH:mm:ss', '1970-1-1 00:01:10', 70],
+        ];
     }
 
     public function parseTimezoneProvider()
     {
-        return array(
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-03:00', 10800),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-04:00', 14400),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-00:00', 0),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+03:00', -10800),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+04:00', -14400),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-0300', 10800),
-            array('y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+0300', -10800),
+        return [
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-03:00', 10800],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-04:00', 14400],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-00:00', 0],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+03:00', -10800],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+04:00', -14400],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT-0300', 10800],
+            ['y-M-d HH:mm:ss zzzz', '1970-1-1 00:00:00 GMT+0300', -10800],
 
             // a previous timezone parsing should not change the timezone for the next parsing
-            array('y-M-d HH:mm:ss', '1970-1-1 00:00:00', 0),
-        );
+            ['y-M-d HH:mm:ss', '1970-1-1 00:00:00', 0],
+        ];
     }
 
     public function parseAmPmProvider()
     {
-        return array(
+        return [
             // AM/PM (already covered by hours tests)
-            array('y-M-d HH:mm:ss a', '1970-1-1 00:00:00 AM', 0),
-            array('y-M-d HH:mm:ss a', '1970-1-1 00:00:00 PM', 43200),
-        );
+            ['y-M-d HH:mm:ss a', '1970-1-1 00:00:00 AM', 0],
+            ['y-M-d HH:mm:ss a', '1970-1-1 00:00:00 PM', 43200],
+        ];
     }
 
     public function parseStandaloneAmPmProvider()
     {
-        return array(
-            array('a', 'AM', 0),
-            array('a', 'PM', 43200),
-        );
+        return [
+            ['a', 'AM', 0],
+            ['a', 'PM', 43200],
+        ];
     }
 
     public function parseRegexMetaCharsProvider()
     {
-        return array(
+        return [
             // regexp meta chars in the pattern string
-            array('y[M-d', '1970[1-1', 0),
-            array('y[M/d', '1970[1/1', 0),
-        );
+            ['y[M-d', '1970[1-1', 0],
+            ['y[M/d', '1970[1/1', 0],
+        ];
     }
 
     public function parseQuoteCharsProvider()
     {
-        return array(
-            array("'M'", 'M', 0),
-            array("'yy'", 'yy', 0),
-            array("'''yy'", "'yy", 0),
-            array("''y", "'1970", 0),
-            array("H 'o'' clock'", "0 o' clock", 0),
-        );
+        return [
+            ["'M'", 'M', 0],
+            ["'yy'", 'yy', 0],
+            ["'''yy'", "'yy", 0],
+            ["''y", "'1970", 0],
+            ["H 'o'' clock'", "0 o' clock", 0],
+        ];
     }
 
     public function parseDashSlashProvider()
     {
-        return array(
-            array('y-M-d', '1970/1/1', 0),
-            array('yy-M-d', '70/1/1', 0),
-            array('y/M/d', '1970-1-1', 0),
-            array('yy/M/d', '70-1-1', 0),
-        );
+        return [
+            ['y-M-d', '1970/1/1', 0],
+            ['yy-M-d', '70/1/1', 0],
+            ['y/M/d', '1970-1-1', 0],
+            ['yy/M/d', '70-1-1', 0],
+        ];
     }
 
     /**
@@ -841,15 +841,15 @@ public function testParseError($pattern, $value)
 
     public function parseErrorProvider()
     {
-        return array(
+        return [
             // 1 char month
-            array('y-MMMMM-d', '1970-J-1'),
-            array('y-MMMMM-d', '1970-S-1'),
+            ['y-MMMMM-d', '1970-J-1'],
+            ['y-MMMMM-d', '1970-S-1'],
 
             // standalone 1 char month
-            array('y-LLLLL-d', '1970-J-1'),
-            array('y-LLLLL-d', '1970-S-1'),
-        );
+            ['y-LLLLL-d', '1970-J-1'],
+            ['y-LLLLL-d', '1970-S-1'],
+        ];
     }
 
     /*
@@ -892,16 +892,16 @@ public function testSetTimeZoneId($timeZoneId, $expectedTimeZoneId)
 
     public function setTimeZoneIdProvider()
     {
-        return array(
-            array('UTC', 'UTC'),
-            array('GMT', 'GMT'),
-            array('GMT-03:00', 'GMT-03:00'),
-            array('Europe/Zurich', 'Europe/Zurich'),
-            array(null, date_default_timezone_get()),
-            array('Foo/Bar', 'UTC'),
-            array('GMT+00:AA', 'UTC'),
-            array('GMT+00AA', 'UTC'),
-        );
+        return [
+            ['UTC', 'UTC'],
+            ['GMT', 'GMT'],
+            ['GMT-03:00', 'GMT-03:00'],
+            ['Europe/Zurich', 'Europe/Zurich'],
+            [null, date_default_timezone_get()],
+            ['Foo/Bar', 'UTC'],
+            ['GMT+00:AA', 'UTC'],
+            ['GMT+00AA', 'UTC'],
+        ];
     }
 
     protected function getDefaultDateFormatter($pattern = null)
diff --git a/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php b/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
index 15c4e9e2ff6b..9905e326e002 100644
--- a/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
+++ b/src/Symfony/Component/Intl/Tests/DateFormatter/IntlDateFormatterTest.php
@@ -52,7 +52,7 @@ public function testFormatWithUnsupportedTimestampArgument()
     {
         $formatter = $this->getDefaultDateFormatter();
 
-        $localtime = array(
+        $localtime = [
             'tm_sec' => 59,
             'tm_min' => 3,
             'tm_hour' => 15,
@@ -62,7 +62,7 @@ public function testFormatWithUnsupportedTimestampArgument()
             'tm_wday' => 0,
             'tm_yday' => 105,
             'tm_isdst' => 0,
-        );
+        ];
 
         try {
             $formatter->format($localtime);
@@ -89,7 +89,7 @@ public function testFormatWithUnimplementedChars()
     public function testFormatWithNonIntegerTimestamp()
     {
         $formatter = $this->getDefaultDateFormatter();
-        $formatter->format(array());
+        $formatter->format([]);
     }
 
     public function testGetErrorCode()
@@ -220,7 +220,7 @@ protected function isIntlFailure($errorCode)
     private function notImplemented(array $dataSets)
     {
         return array_map(function (array $row) {
-            return array($row[0], $row[1], 0);
+            return [$row[0], $row[1], 0];
         }, $dataSets);
     }
 }
diff --git a/src/Symfony/Component/Ldap/Adapter/AbstractQuery.php b/src/Symfony/Component/Ldap/Adapter/AbstractQuery.php
index 4bba5c2ebee4..442936b578e9 100644
--- a/src/Symfony/Component/Ldap/Adapter/AbstractQuery.php
+++ b/src/Symfony/Component/Ldap/Adapter/AbstractQuery.php
@@ -24,10 +24,10 @@ abstract class AbstractQuery implements QueryInterface
     protected $query;
     protected $options;
 
-    public function __construct(ConnectionInterface $connection, string $dn, string $query, array $options = array())
+    public function __construct(ConnectionInterface $connection, string $dn, string $query, array $options = [])
     {
         $resolver = new OptionsResolver();
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'filter' => '*',
             'maxItems' => 0,
             'sizeLimit' => 0,
@@ -35,12 +35,12 @@ public function __construct(ConnectionInterface $connection, string $dn, string
             'deref' => static::DEREF_NEVER,
             'attrsOnly' => 0,
             'scope' => static::SCOPE_SUB,
-        ));
-        $resolver->setAllowedValues('deref', array(static::DEREF_ALWAYS, static::DEREF_NEVER, static::DEREF_FINDING, static::DEREF_SEARCHING));
-        $resolver->setAllowedValues('scope', array(static::SCOPE_BASE, static::SCOPE_ONE, static::SCOPE_SUB));
+        ]);
+        $resolver->setAllowedValues('deref', [static::DEREF_ALWAYS, static::DEREF_NEVER, static::DEREF_FINDING, static::DEREF_SEARCHING]);
+        $resolver->setAllowedValues('scope', [static::SCOPE_BASE, static::SCOPE_ONE, static::SCOPE_SUB]);
 
         $resolver->setNormalizer('filter', function (Options $options, $value) {
-            return \is_array($value) ? $value : array($value);
+            return \is_array($value) ? $value : [$value];
         });
 
         $this->connection = $connection;
diff --git a/src/Symfony/Component/Ldap/Adapter/ExtLdap/EntryManager.php b/src/Symfony/Component/Ldap/Adapter/ExtLdap/EntryManager.php
index f906fa6ff428..89ab1e6225bd 100644
--- a/src/Symfony/Component/Ldap/Adapter/ExtLdap/EntryManager.php
+++ b/src/Symfony/Component/Ldap/Adapter/ExtLdap/EntryManager.php
@@ -77,7 +77,7 @@ public function addAttributeValues(Entry $entry, string $attribute, array $value
     {
         $con = $this->getConnectionResource();
 
-        if (!@ldap_mod_add($con, $entry->getDn(), array($attribute => $values))) {
+        if (!@ldap_mod_add($con, $entry->getDn(), [$attribute => $values])) {
             throw new LdapException(sprintf('Could not add values to entry "%s", attribute %s: %s.', $entry->getDn(), $attribute, ldap_error($con)));
         }
     }
@@ -92,7 +92,7 @@ public function removeAttributeValues(Entry $entry, string $attribute, array $va
     {
         $con = $this->getConnectionResource();
 
-        if (!@ldap_mod_del($con, $entry->getDn(), array($attribute => $values))) {
+        if (!@ldap_mod_del($con, $entry->getDn(), [$attribute => $values])) {
             throw new LdapException(sprintf('Could not remove values from entry "%s", attribute %s: %s.', $entry->getDn(), $attribute, ldap_error($con)));
         }
     }
diff --git a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Query.php b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Query.php
index 05e5878bb2a4..dfdb4c61b8bd 100644
--- a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Query.php
+++ b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Query.php
@@ -27,7 +27,7 @@ class Query extends AbstractQuery
     /** @var resource */
     private $search;
 
-    public function __construct(Connection $connection, string $dn, string $query, array $options = array())
+    public function __construct(Connection $connection, string $dn, string $query, array $options = [])
     {
         parent::__construct($connection, $dn, $query, $options);
     }
diff --git a/src/Symfony/Component/Ldap/Entry.php b/src/Symfony/Component/Ldap/Entry.php
index 8a71ddaa1f9f..8ed484d0e0e1 100644
--- a/src/Symfony/Component/Ldap/Entry.php
+++ b/src/Symfony/Component/Ldap/Entry.php
@@ -19,7 +19,7 @@ class Entry
     private $dn;
     private $attributes;
 
-    public function __construct(string $dn, array $attributes = array())
+    public function __construct(string $dn, array $attributes = [])
     {
         $this->dn = $dn;
         $this->attributes = $attributes;
diff --git a/src/Symfony/Component/Ldap/Ldap.php b/src/Symfony/Component/Ldap/Ldap.php
index de1ab1a249ed..615dbcfda383 100644
--- a/src/Symfony/Component/Ldap/Ldap.php
+++ b/src/Symfony/Component/Ldap/Ldap.php
@@ -21,9 +21,9 @@ final class Ldap implements LdapInterface
 {
     private $adapter;
 
-    private static $adapterMap = array(
+    private static $adapterMap = [
         'ext_ldap' => 'Symfony\Component\Ldap\Adapter\ExtLdap\Adapter',
-    );
+    ];
 
     public function __construct(AdapterInterface $adapter)
     {
@@ -41,7 +41,7 @@ public function bind($dn = null, $password = null)
     /**
      * {@inheritdoc}
      */
-    public function query($dn, $query, array $options = array())
+    public function query($dn, $query, array $options = [])
     {
         return $this->adapter->createQuery($dn, $query, $options);
     }
@@ -70,7 +70,7 @@ public function escape($subject, $ignore = '', $flags = 0)
      *
      * @return static
      */
-    public static function create($adapter, array $config = array()): self
+    public static function create($adapter, array $config = []): self
     {
         if (!isset(self::$adapterMap[$adapter])) {
             throw new DriverNotFoundException(sprintf(
diff --git a/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php b/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
index 6d5d58800228..799e6a064abb 100644
--- a/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
+++ b/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
@@ -200,14 +200,14 @@ public function testLdapAddRemoveAttributeValues()
         $result = $this->executeSearchQuery(1);
         $entry = $result[0];
 
-        $entryManager->addAttributeValues($entry, 'mail', array('fabpot@example.org', 'fabpot2@example.org'));
+        $entryManager->addAttributeValues($entry, 'mail', ['fabpot@example.org', 'fabpot2@example.org']);
 
         $result = $this->executeSearchQuery(1);
         $newEntry = $result[0];
 
         $this->assertCount(4, $newEntry->getAttribute('mail'));
 
-        $entryManager->removeAttributeValues($newEntry, 'mail', array('fabpot@example.org', 'fabpot2@example.org'));
+        $entryManager->removeAttributeValues($newEntry, 'mail', ['fabpot@example.org', 'fabpot2@example.org']);
 
         $result = $this->executeSearchQuery(1);
         $newNewEntry = $result[0];
@@ -224,7 +224,7 @@ public function testLdapRemoveAttributeValuesError()
 
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}(LdapException::class);
 
-        $entryManager->removeAttributeValues($entry, 'mail', array('fabpot@example.org'));
+        $entryManager->removeAttributeValues($entry, 'mail', ['fabpot@example.org']);
     }
 
     public function testLdapAddAttributeValuesError()
diff --git a/src/Symfony/Component/Lock/Lock.php b/src/Symfony/Component/Lock/Lock.php
index bef58fbec277..a970587d083b 100644
--- a/src/Symfony/Component/Lock/Lock.php
+++ b/src/Symfony/Component/Lock/Lock.php
@@ -76,7 +76,7 @@ public function acquire($blocking = false)
             }
 
             $this->dirty = true;
-            $this->logger->info('Successfully acquired the "{resource}" lock.', array('resource' => $this->key));
+            $this->logger->info('Successfully acquired the "{resource}" lock.', ['resource' => $this->key]);
 
             if ($this->ttl) {
                 $this->refresh();
@@ -89,7 +89,7 @@ public function acquire($blocking = false)
             return true;
         } catch (LockConflictedException $e) {
             $this->dirty = false;
-            $this->logger->notice('Failed to acquire the "{resource}" lock. Someone else already acquired the lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to acquire the "{resource}" lock. Someone else already acquired the lock.', ['resource' => $this->key]);
 
             if ($blocking) {
                 throw $e;
@@ -97,7 +97,7 @@ public function acquire($blocking = false)
 
             return false;
         } catch (\Exception $e) {
-            $this->logger->notice('Failed to acquire the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
+ 
10000
           $this->logger->notice('Failed to acquire the "{resource}" lock.', ['resource' => $this->key, 'exception' => $e]);
             throw new LockAcquiringException(sprintf('Failed to acquire the "%s" lock.', $this->key), 0, $e);
         }
     }
@@ -123,13 +123,13 @@ public function refresh($ttl = null)
                 throw new LockExpiredException(sprintf('Failed to put off the expiration of the "%s" lock within the specified time.', $this->key));
             }
 
-            $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', array('resource' => $this->key, 'ttl' => $ttl));
+            $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', ['resource' => $this->key, 'ttl' => $ttl]);
         } catch (LockConflictedException $e) {
             $this->dirty = false;
-            $this->logger->notice('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', ['resource' => $this->key]);
             throw $e;
         } catch (\Exception $e) {
-            $this->logger->notice('Failed to define an expiration for the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
+            $this->logger->notice('Failed to define an expiration for the "{resource}" lock.', ['resource' => $this->key, 'exception' => $e]);
             throw new LockAcquiringException(sprintf('Failed to define an expiration for the "%s" lock.', $this->key), 0, $e);
         }
     }
@@ -151,7 +151,7 @@ public function release()
         $this->dirty = false;
 
         if ($this->store->exists($this->key)) {
-            $this->logger->notice('Failed to release the "{resource}" lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to release the "{resource}" lock.', ['resource' => $this->key]);
             throw new LockReleasingException(sprintf('Failed to release the "%s" lock.', $this->key));
         }
     }
diff --git a/src/Symfony/Component/Messenger/Asynchronous/Middleware/SendMessageMiddleware.php b/src/Symfony/Component/Messenger/Asynchronous/Middleware/SendMessageMiddleware.php
index 16fdfd81f108..af53493622a0 100644
--- a/src/Symfony/Component/Messenger/Asynchronous/Middleware/SendMessageMiddleware.php
+++ b/src/Symfony/Component/Messenger/Asynchronous/Middleware/SendMessageMiddleware.php
@@ -27,7 +27,7 @@ class SendMessageMiddleware implements MiddlewareInterface, EnvelopeAwareInterfa
     private $senderLocator;
     private $messagesToSendAndHandleMapping;
 
-    public function __construct(SenderLocatorInterface $senderLocator, array $messagesToSendAndHandleMapping = array())
+    public function __construct(SenderLocatorInterface $senderLocator, array $messagesToSendAndHandleMapping = [])
     {
         $this->senderLocator = $senderLocator;
         $this->messagesToSendAndHandleMapping = $messagesToSendAndHandleMapping;
diff --git a/src/Symfony/Component/Messenger/Command/ConsumeMessagesCommand.php b/src/Symfony/Component/Messenger/Command/ConsumeMessagesCommand.php
index 06b48a50c5ac..761357e42a6e 100644
--- a/src/Symfony/Component/Messenger/Command/ConsumeMessagesCommand.php
+++ b/src/Symfony/Component/Messenger/Command/ConsumeMessagesCommand.php
@@ -40,7 +40,7 @@ class ConsumeMessagesCommand extends Command
     private $logger;
     private $receiverNames;
 
-    public function __construct(MessageBusInterface $bus, ContainerInterface $receiverLocator, LoggerInterface $logger = null, array $receiverNames = array())
+    public function __construct(MessageBusInterface $bus, ContainerInterface $receiverLocator, LoggerInterface $logger = null, array $receiverNames = [])
     {
         $this->bus = $bus;
         $this->receiverLocator = $receiverLocator;
@@ -58,12 +58,12 @@ protected function configure(): void
         $defaultReceiverName = 1 === \count($this->receiverNames) ? current($this->receiverNames) : null;
 
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('receiver', $defaultReceiverName ? InputArgument::OPTIONAL : InputArgument::REQUIRED, 'Name of the receiver', $defaultReceiverName),
                 new InputOption('limit', 'l', InputOption::VALUE_REQUIRED, 'Limit the number of received messages'),
                 new InputOption('memory-limit', 'm', InputOption::VALUE_REQUIRED, 'The memory limit the worker can consume'),
                 new InputOption('time-limit', 't', InputOption::VALUE_REQUIRED, 'The time limit in seconds the worker can run'),
-            ))
+            ])
             ->setDescription('Consumes messages')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command consumes messages and dispatches them to the message bus.
@@ -161,7 +161,7 @@ private function convertToBytes(string $memoryLimit): int
 
     private function findAlternatives($name, array $collection)
     {
-        $alternatives = array();
+        $alternatives = [];
         foreach ($collection as $item) {
             $lev = levenshtein($name, $item);
             if ($lev <= \strlen($name) / 3 || false !== strpos($item, $name)) {
diff --git a/src/Symfony/Component/Messenger/Command/DebugCommand.php b/src/Symfony/Component/Messenger/Command/DebugCommand.php
index 38d4e4253cec..0f39991146e8 100644
--- a/src/Symfony/Component/Messenger/Command/DebugCommand.php
+++ b/src/Symfony/Component/Messenger/Command/DebugCommand.php
@@ -74,24 +74,24 @@ protected function execute(InputInterface $input, OutputInterface $output)
             if (!isset($mapping[$bus])) {
                 throw new RuntimeException(sprintf('Bus "%s" does not exist. Known buses are %s.', $bus, implode(', ', array_keys($this->mapping))));
             }
-            $mapping = array($bus => $mapping[$bus]);
+            $mapping = [$bus => $mapping[$bus]];
         }
 
         foreach ($mapping as $bus => $handlersByMessage) {
             $io->section($bus);
 
-            $tableRows = array();
+            $tableRows = [];
             foreach ($handlersByMessage as $message => $handlers) {
-                $tableRows[] = array(sprintf('<fg=cyan>%s</fg=cyan>', $message));
+                $tableRows[] = [sprintf('<fg=cyan>%s</fg=cyan>', $message)];
                 foreach ($handlers as $handler) {
-                    $tableRows[] = array(sprintf('    handled by <info>%s</>', $handler));
+                    $tableRows[] = [sprintf('    handled by <info>%s</>', $handler)];
                 }
             }
 
             if ($tableRows) {
                 $io->text('The following messages can be dispatched:');
                 $io->newLine();
-                $io->table(array(), $tableRows);
+                $io->table([], $tableRows);
             } else {
                 $io->warning(sprintf('No handled message found in bus "%s".', $bus));
             }
diff --git a/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php b/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
index 7c5a81252fe8..e28c760cea5f 100644
--- a/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
+++ b/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
@@ -26,7 +26,7 @@
  */
 class MessengerDataCollector extends DataCollector implements LateDataCollectorInterface
 {
-    private $traceableBuses = array();
+    private $traceableBuses = [];
 
     public function registerBus(string $name, TraceableMessageBus $bus)
     {
@@ -46,13 +46,13 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function lateCollect()
     {
-        $this->data = array('messages' => array(), 'buses' => array_keys($this->traceableBuses));
+        $this->data = ['messages' => [], 'buses' => array_keys($this->traceableBuses)];
 
-        $messages = array();
+        $messages = [];
         foreach ($this->traceableBuses as $busName => $bus) {
             foreach ($bus->getDispatchedMessages() as $message) {
                 $debugRepresentation = $this->cloneVar($this->collectMessage($busName, $message));
-                $messages[] = array($debugRepresentation, $message['callTime']);
+                $messages[] = [$debugRepresentation, $message['callTime']];
             }
         }
 
@@ -78,7 +78,7 @@ public function getName()
      */
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
         foreach ($this->traceableBuses as $traceableBus) {
             $traceableBus->reset();
         }
@@ -88,30 +88,30 @@ private function collectMessage(string $busName, array $tracedMessage)
     {
         $message = $tracedMessage['message'];
 
-        $debugRepresentation = array(
+        $debugRepresentation = [
             'bus' => $busName,
             'envelopeItems' => $tracedMessage['envelopeItems'] ?? null,
-            'message' => array(
+            'message' => [
                 'type' => new ClassStub(\get_class($message)),
                 'value' => $message,
-            ),
-        );
+            ],
+        ];
 
         if (array_key_exists('result', $tracedMessage)) {
             $result = $tracedMessage['result'];
-            $debugRepresentation['result'] = array(
+            $debugRepresentation['result'] = [
                 'type' => \is_object($result) ? \get_class($result) : \gettype($result),
                 'value' => $result,
-            );
+            ];
         }
 
         if (isset($tracedMessage['exception'])) {
             $exception = $tracedMessage['exception'];
 
-            $debugRepresentation['exception'] = array(
+            $debugRepresentation['exception'] = [
                 'type' => \get_class($exception),
                 'value' => $exception,
-            );
+            ];
         }
 
         return $debugRepresentation;
@@ -126,7 +126,7 @@ public function getExceptionsCount(string $bus = null): int
 
     public function getMessages(string $bus = null): array
     {
-        $messages = $this->data['messages'] ?? array();
+        $messages = $this->data['messages'] ?? [];
 
         return $bus ? array_filter($messages, function (Data $message) use ($bus): bool {
             return $bus === $message['bus'];
diff --git a/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php b/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php
index a714375ede1b..37da4eebf275 100644
--- a/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php
+++ b/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php
@@ -55,7 +55,7 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $busIds = array();
+        $busIds = [];
         foreach ($container->findTaggedServiceIds($this->busTag) as $busId => $tags) {
             $busIds[] = $busId;
             if ($container->hasParameter($busMiddlewareParameter = $busId.'.middleware')) {
@@ -76,8 +76,8 @@ public function process(ContainerBuilder $container)
 
     private function registerHandlers(ContainerBuilder $container, array $busIds)
     {
-        $definitions = array();
-        $handlersByBusAndMessage = array();
+        $definitions = [];
+        $handlersByBusAndMessage = [];
 
         foreach ($container->findTaggedServiceIds($this->handlerTag, true) as $serviceId => $tags) {
             foreach ($tags as $tag) {
@@ -88,7 +88,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
                 $r = $container->getReflectionClass($container->getDefinition($serviceId)->getClass());
 
                 if (isset($tag['handles'])) {
-                    $handles = isset($tag['method']) ? array($tag['handles'] => $tag['method']) : array($tag['handles']);
+                    $handles = isset($tag['method']) ? [$tag['handles'] => $tag['method']] : [$tag['handles']];
                 } else {
                     $handles = $this->guessHandledClasses($r, $serviceId);
                 }
@@ -125,7 +125,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
                     }
 
                     if ('__invoke' !== $method) {
-                        $wrapperDefinition = (new Definition('callable'))->addArgument(array(new Reference($serviceId), $method))->setFactory('Closure::fromCallable');
+                        $wrapperDefinition = (new Definition('callable'))->addArgument([new Reference($serviceId), $method])->setFactory('Closure::fromCallable');
 
                         $definitions[$definitionId = '.messenger.method_on_object_wrapper.'.ContainerBuilder::hash($messageClass.':'.$messagePriority.':'.$serviceId.':'.$method)] = $wrapperDefinition;
                     } else {
@@ -146,15 +146,15 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
             }
         }
 
-        $handlersLocatorMappingByBus = array();
+        $handlersLocatorMappingByBus = [];
         foreach ($handlersByBusAndMessage as $bus => $handlersByMessage) {
             foreach ($handlersByMessage as $message => $handlersIds) {
                 if (1 === \count($handlersIds)) {
                     $handlersLocatorMappingByBus[$bus]['handler.'.$message] = new Reference(current($handlersIds));
                 } else {
-                    $chainHandler = new Definition(ChainHandler::class, array(array_map(function (string $handlerId): Reference {
+                    $chainHandler = new Definition(ChainHandler::class, [array_map(function (string $handlerId): Reference {
                         return new Reference($handlerId);
-                    }, $handlersIds)));
+                    }, $handlersIds)]);
                     $chainHandler->setPrivate(true);
                     $serviceId = '.messenger.chain_handler.'.ContainerBuilder::hash($bus.$message);
                     $definitions[$serviceId] = $chainHandler;
@@ -166,7 +166,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
 
         foreach ($busIds as $bus) {
             $container->register($resolverName = "$bus.messenger.handler_resolver", ContainerHandlerLocator::class)
-                ->setArgument(0, ServiceLocatorTagPass::register($container, $handlersLocatorMappingByBus[$bus] ?? array()))
+                ->setArgument(0, ServiceLocatorTagPass::register($container, $handlersLocatorMappingByBus[$bus] ?? []))
             ;
             if ($container->has($callMessageHandlerId = "$bus.middleware.call_message_handler")) {
                 $container->getDefinition($callMessageHandlerId)
@@ -179,7 +179,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
             $debugCommandMapping = $handlersByBusAndMessage;
             foreach ($busIds as $bus) {
                 if (!isset($debugCommandMapping[$bus])) {
-                    $debugCommandMapping[$bus] = array();
+                    $debugCommandMapping[$bus] = [];
                 }
             }
             $container->getDefinition('console.command.messenger_debug')->replaceArgument(0, $debugCommandMapping);
@@ -215,12 +215,12 @@ private function guessHandledClasses(\ReflectionClass $handlerClass, string $ser
             throw new RuntimeException(sprintf('Invalid handler service "%s": type-hint of argument "$%s" in method "%s::__invoke()" must be a class , "%s" given.', $serviceId, $parameters[0]->getName(), $handlerClass->getName(), $type));
         }
 
-        return array((string) $parameters[0]->getType());
+        return [(string) $parameters[0]->getType()];
     }
 
     private function registerReceivers(ContainerBuilder $container)
     {
-        $receiverMapping = array();
+        $receiverMapping = [];
 
         foreach ($container->findTaggedServiceIds($this->receiverTag) as $id => $tags) {
             $receiverClass = $container->findDefinition($id)->getClass();
@@ -238,7 +238,7 @@ private function registerReceivers(ContainerBuilder $container)
         }
 
         if ($container->hasDefinition('console.command.messenger_consume_messages')) {
-            $receiverNames = array();
+            $receiverNames = [];
             foreach ($receiverMapping as $name => $reference) {
                 $receiverNames[(string) $reference] = $name;
             }
@@ -250,7 +250,7 @@ private function registerReceivers(ContainerBuilder $container)
 
     private function registerSenders(ContainerBuilder $container)
     {
-        $senderLocatorMapping = array();
+        $senderLocatorMapping = [];
         foreach ($container->findTaggedServiceIds($this->senderTag) as $id => $tags) {
             $senderClass = $container->findDefinition($id)->getClass();
             if (!is_subclass_of($senderClass, SenderInterface::class)) {
@@ -273,18 +273,18 @@ private function registerBusToCollector(ContainerBuilder $container, string $bus
     {
         $container->setDefinition(
             $tracedBusId = 'debug.traced.'.$busId,
-            (new Definition(TraceableMessageBus::class, array(new Reference($tracedBusId.'.inner'))))->setDecoratedService($busId)
+            (new Definition(TraceableMessageBus::class, [new Reference($tracedBusId.'.inner')]))->setDecoratedService($busId)
         );
 
-        $container->getDefinition('data_collector.messenger')->addMethodCall('registerBus', array($busId, new Reference($tracedBusId)));
+        $container->getDefinition('data_collector.messenger')->addMethodCall('registerBus', [$busId, new Reference($tracedBusId)]);
     }
 
     private function registerBusMiddleware(ContainerBuilder $container, string $busId, array $middlewareCollection)
     {
-        $middlewareReferences = array();
+        $middlewareReferences = [];
         foreach ($middlewareCollection as $middlewareItem) {
             $id = $middlewareItem['id'];
-            $arguments = $middlewareItem['arguments'] ?? array();
+            $arguments = $middlewareItem['arguments'] ?? [];
             if (!$container->has($messengerMiddlewareId = 'messenger.middleware.'.$id)) {
                 $messengerMiddlewareId = $id;
             }
@@ -296,7 +296,7 @@ private function registerBusMiddleware(ContainerBuilder $container, string $busI
             if (($definition = $container->findDefinition($messengerMiddlewareId))->isAbstract()) {
                 $childDefinition = new ChildDefinition($messengerMiddlewareId);
                 $count = \count($definition->getArguments());
-                foreach (array_values($arguments ?? array()) as $key => $argument) {
+                foreach (array_values($arguments ?? []) as $key => $argument) {
                     // Parent definition can provide default arguments.
                     // Replace each explicitly or add if not set:
                     $key < $count ? $childDefinition->replaceArgument($key, $argument) : $childDefinition->addArgument($argument);
diff --git a/src/Symfony/Component/Messenger/Envelope.php b/src/Symfony/Component/Messenger/Envelope.php
index 4d5f7a02a9d5..5929cb874b22 100644
--- a/src/Symfony/Component/Messenger/Envelope.php
+++ b/src/Symfony/Component/Messenger/Envelope.php
@@ -20,14 +20,14 @@
  */
 final class Envelope
 {
-    private $items = array();
+    private $items = [];
     private $message;
 
     /**
      * @param object                  $message
      * @param EnvelopeItemInterface[] $items
      */
-    public function __construct($message, array $items = array())
+    public function __construct($message, array $items = [])
     {
         $this->message = $message;
         foreach ($items as $item) {
diff --git a/src/Symfony/Component/Messenger/Handler/ChainHandler.php b/src/Symfony/Component/Messenger/Handler/ChainHandler.php
index f73f92838101..1d0681127733 100644
--- a/src/Symfony/Component/Messenger/Handler/ChainHandler.php
+++ b/src/Symfony/Component/Messenger/Handler/ChainHandler.php
@@ -37,7 +37,7 @@ public function __construct(array $handlers)
 
     public function __invoke($message)
     {
-        $results = array();
+        $results = [];
 
         foreach ($this->handlers as $handler) {
             $results[] = $handler($message);
diff --git a/src/Symfony/Component/Messenger/Handler/Locator/HandlerLocator.php b/src/Symfony/Component/Messenger/Handler/Locator/HandlerLocator.php
index 76d1a63d32f0..ffeb341f0651 100644
--- a/src/Symfony/Component/Messenger/Handler/Locator/HandlerLocator.php
+++ b/src/Symfony/Component/Messenger/Handler/Locator/HandlerLocator.php
@@ -23,7 +23,7 @@ class HandlerLocator implements HandlerLocatorInterface
      */
     private $messageToHandlerMapping;
 
-    public function __construct(array $messageToHandlerMapping = array())
+    public function __construct(array $messageToHandlerMapping = [])
     {
         $this->messageToHandlerMapping = $messageToHandlerMapping;
     }
diff --git a/src/Symfony/Component/Messenger/MessageBus.php b/src/Symfony/Component/Messenger/MessageBus.php
index 89fa8e04fa23..9495795ab13d 100644
--- a/src/Symfony/Component/Messenger/MessageBus.php
+++ b/src/Symfony/Component/Messenger/MessageBus.php
@@ -30,7 +30,7 @@ class MessageBus implements MessageBusInterface
     /**
      * @param MiddlewareInterface[]|iterable $middlewareHandlers
      */
-    public function __construct(iterable $middlewareHandlers = array())
+    public function __construct(iterable $middlewareHandlers = [])
     {
         $this->middlewareHandlers = $middlewareHandlers;
     }
diff --git a/src/Symfony/Component/Messenger/Middleware/Configuration/ValidationConfiguration.php b/src/Symfony/Component/Messenger/Middleware/Configuration/ValidationConfiguration.php
index 1b6180857b31..b28ba8ab6b65 100644
--- a/src/Symfony/Component/Messenger/Middleware/Configuration/ValidationConfiguration.php
+++ b/src/Symfony/Component/Messenger/Middleware/Configuration/ValidationConfiguration.php
@@ -40,10 +40,10 @@ public function serialize()
     {
         $isGroupSequence = $this->groups instanceof GroupSequence;
 
-        return serialize(array(
+        return serialize([
             'groups' => $isGroupSequence ? $this->groups->groups : $this->groups,
             'is_group_sequence' => $isGroupSequence,
-        ));
+        ]);
     }
 
     public function unserialize($serialized)
@@ -51,7 +51,7 @@ public function unserialize($serialized)
         list(
             'groups' => $groups,
             'is_group_sequence' => $isGroupSequence
-        ) = unserialize($serialized, array('allowed_classes' => false));
+        ) = unserialize($serialized, ['allowed_classes' => false]);
 
         $this->__construct($isGroupSequence ? new GroupSequence($groups) : $groups);
     }
diff --git a/src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php b/src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php
index ebaf8525c040..b0cbb8edd4ed 100644
--- a/src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php
+++ b/src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php
@@ -37,7 +37,7 @@ public function handle($message, callable $next)
         } catch (\Throwable $e) {
             $this->logger->warning('An exception occurred while handling message {class}', array_merge(
                 $this->createContext($message),
-                array('exception' => $e)
+                ['exception' => $e]
             ));
 
             throw $e;
@@ -50,9 +50,9 @@ public function handle($message, callable $next)
 
     private function createContext($message): array
     {
-        return array(
+        return [
             'message' => $message,
             'class' => \get_class($message),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Asynchronous/Middleware/SendMessageMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Asynchronous/Middleware/SendMessageMiddlewareTest.php
index c9d548360c7b..14c8f81a58d4 100644
--- a/src/Symfony/Component/Messenger/Tests/Asynchronous/Middleware/SendMessageMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Asynchronous/Middleware/SendMessageMiddlewareTest.php
@@ -27,7 +27,7 @@ public function testItSendsTheMessageToAssignedSender()
     {
         $message = new DummyMessage('Hey');
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
         $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender));
 
@@ -41,7 +41,7 @@ public function testItSendsTheMessageToAssignedSenderWithPreWrappedMessage()
     {
         $envelope = Envelope::wrap(new DummyMessage('Hey'));
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
         $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender));
 
@@ -55,11 +55,11 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnTheMessageClass()
     {
         $message = new DummyMessage('Hey');
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
-        $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender), array(
+        $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender), [
             DummyMessage::class => true,
-        ));
+        ]);
 
         $sender->expects($this->once())->method('send')->with(Envelope::wrap($message));
         $next->expects($this->once())->method($this->anything());
@@ -71,11 +71,11 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnTheMessageParentClass()
     {
         $message = new ChildDummyMessage('Hey');
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
-        $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender), array(
+        $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender), [
             DummyMessage::class => true,
-        ));
+        ]);
 
         $sender->expects($this->once())->method('send')->with(Envelope::wrap($message));
         $next->expects($this->once())->method($this->anything());
@@ -87,11 +87,11 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnTheMessageInterface()
     {
         $message = new DummyMessage('Hey');
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
-        $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender), array(
+        $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender), [
             DummyMessageInterface::class => true,
-        ));
+        ]);
 
         $sender->expects($this->once())->method('send')->with(Envelope::wrap($message));
         $next->expects($this->once())->method($this->anything());
@@ -103,11 +103,11 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnWildcard()
     {
         $message = new DummyMessage('Hey');
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
-        $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender), array(
+        $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender), [
             '*' => true,
-        ));
+        ]);
 
         $sender->expects($this->once())->method('send')->with(Envelope::wrap($message));
         $next->expects($this->once())->method($this->anything());
@@ -118,7 +118,7 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnWildcard()
     public function testItCallsTheNextMiddlewareWhenNoSenderForThisMessage()
     {
         $message = new DummyMessage('Hey');
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
         $middleware = new SendMessageMiddleware(new InMemorySenderLocator(null));
 
@@ -132,7 +132,7 @@ public function testItSkipsReceivedMessages()
         $envelope = Envelope::wrap(new DummyMessage('Hey'))->with(new ReceivedMessage());
 
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
         $middleware = new SendMessageMiddleware(new InMemorySenderLocator($sender));
 
diff --git a/src/Symfony/Component/Messenger/Tests/Asynchronous/Routing/SenderLocatorTest.php b/src/Symfony/Component/Messenger/Tests/Asynchronous/Routing/SenderLocatorTest.php
index 22cf6bac81e6..ac41ccc52395 100644
--- a/src/Symfony/Component/Messenger/Tests/Asynchronous/Routing/SenderLocatorTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Asynchronous/Routing/SenderLocatorTest.php
@@ -27,9 +27,9 @@ public function testItReturnsTheSenderBasedOnTheMessageClass()
         $container = new Container();
         $container->set('my_amqp_sender', $sender);
 
-        $locator = new SenderLocator($container, array(
+        $locator = new SenderLocator($container, [
             DummyMessage::class => 'my_amqp_sender',
-        ));
+        ]);
 
         $this->assertSame($sender, $locator->getSenderForMessage(new DummyMessage('Hello')));
         $this->assertNull($locator->getSenderForMessage(new SecondMessage()));
@@ -45,10 +45,10 @@ public function testItReturnsTheSenderBasedOnTheMessageParentClass()
         $apiSender = $this->getMockBuilder(SenderInterface::class)->getMock();
         $container->set('my_api_sender', $apiSender);
 
-        $locator = new SenderLocator($container, array(
+        $locator = new SenderLocator($container, [
             DummyMessageInterface::class => 'my_api_sender',
             DummyMessage::class => 'my_amqp_sender',
-        ));
+        ]);
 
         $this->assertSame($sender, $locator->getSenderForMessage(new ChildDummyMessage('Hello')));
         $this->assertNull($locator->getSenderForMessage(new SecondMessage()));
@@ -61,9 +61,9 @@ public function testItReturnsTheSenderBasedOnTheMessageInterface()
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
         $container->set('my_amqp_sender', $sender);
 
-        $locator = new SenderLocator($container, array(
+        $locator = new SenderLocator($container, [
             DummyMessageInterface::class => 'my_amqp_sender',
-        ));
+        ]);
 
         $this->assertSame($sender, $locator->getSenderForMessage(new DummyMessage('Hello')));
         $this->assertNull($locator->getSenderForMessage(new SecondMessage()));
@@ -79,10 +79,10 @@ public function testItSupportsAWildcardInsteadOfTheMessageClass()
         $apiSender = $this->getMockBuilder(SenderInterface::class)->getMock();
         $container->set('my_api_sender', $apiSender);
 
-        $locator = new SenderLocator($container, array(
+        $locator = new SenderLocator($container, [
             DummyMessage::class => 'my_amqp_sender',
             '*' => 'my_api_sender',
-        ));
+        ]);
 
         $this->assertSame($sender, $locator->getSenderForMessage(new DummyMessage('Hello')));
         $this->assertSame($apiSender, $locator->getSenderForMessage(new SecondMessage()));
diff --git a/src/Symfony/Component/Messenger/Tests/Asynchronous/Transport/Serialization/SerializerConfigurationTest.php b/src/Symfony/Component/Messenger/Tests/Asynchronous/Transport/Serialization/SerializerConfigurationTest.php
index a5faf45b13f6..bc10c5628521 100644
--- a/src/Symfony/Component/Messenger/Tests/Asynchronous/Transport/Serialization/SerializerConfigurationTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Asynchronous/Transport/Serialization/SerializerConfigurationTest.php
@@ -22,7 +22,7 @@ class SerializerConfigurationTest extends TestCase
 {
     public function testSerializable()
     {
-        $config = new SerializerConfiguration(array(ObjectNormalizer::GROUPS => array('Default', 'Extra')));
+        $config = new SerializerConfiguration([ObjectNormalizer::GROUPS => ['Default', 'Extra']]);
 
         $this->assertTrue(is_subclass_of(SerializerConfiguration::class, \Serializable::class, true));
         $this->assertEquals($config, unserialize(serialize($config)));
diff --git a/src/Symfony/Component/Messenger/Tests/Command/ConsumeMessagesCommandTest.php b/src/Symfony/Component/Messenger/Tests/Command/ConsumeMessagesCommandTest.php
index de489b545f0e..8ef2d91ca255 100644
--- a/src/Symfony/Component/Messenger/Tests/Command/ConsumeMessagesCommandTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Command/ConsumeMessagesCommandTest.php
@@ -20,7 +20,7 @@ class ConsumeMessagesCommandTest extends TestCase
 {
     public function testConfigurationWithDefaultReceiver()
     {
-        $command = new ConsumeMessagesCommand($this->createMock(MessageBus::class), $this->createMock(ServiceLocator::class), null, array('amqp'));
+        $command = new ConsumeMessagesCommand($this->createMock(MessageBus::class), $this->createMock(ServiceLocator::class), null, ['amqp']);
         $inputArgument = $command->getDefinition()->getArgument('receiver');
         $this->assertFalse($inputArgument->isRequired());
         $this->assertSame('amqp', $inputArgument->getDefault());
@@ -28,7 +28,7 @@ public function testConfigurationWithDefaultReceiver()
 
     public function testConfigurationWithoutDefaultReceiver()
     {
-        $command = new ConsumeMessagesCommand($this->createMock(MessageBus::class), $this->createMock(ServiceLocator::class), null, array('amqp', 'dummy'));
+        $command = new ConsumeMessagesCommand($this->createMock(MessageBus::class), $this->createMock(ServiceLocator::class), null, ['amqp', 'dummy']);
         $inputArgument = $command->getDefinition()->getArgument('receiver');
         $this->assertTrue($inputArgument->isRequired());
         $this->assertNull($inputArgument->getDefault());
diff --git a/src/Symfony/Component/Messenger/Tests/Command/DebugCommandTest.php b/src/Symfony/Component/Messenger/Tests/Command/DebugCommandTest.php
index fd52a5d0393a..727aefbfef20 100644
--- a/src/Symfony/Component/Messenger/Tests/Command/DebugCommandTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Command/DebugCommandTest.php
@@ -39,20 +39,20 @@ protected function tearDown()
     public function testOutput()
     {
         $command = new DebugCommand(
-            array(
-                'command_bus' => array(
-                    DummyCommand::class => array(DummyCommandHandler::class),
-                    MultipleBusesMessage::class => array(MultipleBusesMessageHandler::class),
-                ),
-                'query_bus' => array(
-                    DummyQuery::class => array(DummyQueryHandler::class),
-                    MultipleBusesMessage::class => array(MultipleBusesMessageHandler::class),
-                ),
-            )
+            [
+                'command_bus' => [
+                    DummyCommand::class => [DummyCommandHandler::class],
+                    MultipleBusesMessage::class => [MultipleBusesMessageHandler::class],
+                ],
+                'query_bus' => [
+                    DummyQuery::class => [DummyQueryHandler::class],
+                    MultipleBusesMessage::class => [MultipleBusesMessageHandler::class],
+                ],
+            ]
         );
 
         $tester = new CommandTester($command);
-        $tester->execute(array(), array('decorated' => false));
+        $tester->execute([], ['decorated' => false]);
 
         $this->assertSame(<<<TXT
 
@@ -88,7 +88,7 @@ public function testOutput()
             , $tester->getDisplay(true)
         );
 
-        $tester->execute(array('bus' => 'query_bus'), array('decorated' => false));
+        $tester->execute(['bus' => 'query_bus'], ['decorated' => false]);
 
         $this->assertSame(<<<TXT
 
@@ -115,10 +115,10 @@ public function testOutput()
 
     public function testOutputWithoutMessages()
     {
-        $command = new DebugCommand(array('command_bus' => array(), 'query_bus' => array()));
+        $command = new DebugCommand(['command_bus' => [], 'query_bus' => []]);
 
         $tester = new CommandTester($command);
-        $tester->execute(array(), array('decorated' => false));
+        $tester->execute([], ['decorated' => false]);
 
         $this->assertSame(<<<TXT
 
@@ -147,9 +147,9 @@ public function testOutputWithoutMessages()
      */
     public function testExceptionOnUnknownBusArgument()
     {
-        $command = new DebugCommand(array('command_bus' => array(), 'query_bus' => array()));
+        $command = new DebugCommand(['command_bus' => [], 'query_bus' => []]);
 
         $tester = new CommandTester($command);
-        $tester->execute(array('bus' => 'unknown_bus'), array('decorated' => false));
+        $tester->execute(['bus' => 'unknown_bus'], ['decorated' => false]);
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/DataCollector/MessengerDataCollectorTest.php b/src/Symfony/Component/Messenger/Tests/DataCollector/MessengerDataCollectorTest.php
index 8fe0c6004ca7..29d878a74230 100644
--- a/src/Symfony/Component/Messenger/Tests/DataCollector/MessengerDataCollectorTest.php
+++ b/src/Symfony/Component/Messenger/Tests/DataCollector/MessengerDataCollectorTest.php
@@ -70,7 +70,7 @@ public function getHandleTestData()
   ]
 DUMP;
 
-        yield 'no returned value' => array(
+        yield 'no returned value' => [
             null,
             <<<DUMP
 array:4 [
@@ -81,9 +81,9 @@ public function getHandleTestData()
   ]
 ]
 DUMP
-        );
+        ];
 
-        yield 'scalar returned value' => array(
+        yield 'scalar returned value' => [
             'returned value',
             <<<DUMP
 array:4 [
@@ -94,10 +94,10 @@ public function getHandleTestData()
   ]
 ]
 DUMP
-        );
+        ];
 
-        yield 'array returned value' => array(
-            array('returned value'),
+        yield 'array returned value' => [
+            ['returned value'],
             <<<DUMP
 array:4 [
 $messageDump
@@ -109,7 +109,7 @@ public function getHandleTestData()
   ]
 ]
 DUMP
-        );
+        ];
     }
 
     public function testHandleWithException()
diff --git a/src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php b/src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php
index 3fed181ad20e..d4c5626ed1af 100644
--- a/src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php
+++ b/src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php
@@ -53,7 +53,7 @@ public function testProcess()
         ;
         $container
             ->register(MissingArgumentTypeHandler::class, MissingArgumentTypeHandler::class)
-            ->addTag('messenger.message_handler', array('handles' => SecondMessage::class))
+            ->addTag('messenger.message_handler', ['handles' => SecondMessage::class])
         ;
         $container
             ->register(DummyReceiver::class, DummyReceiver::class)
@@ -67,15 +67,15 @@ public function testProcess()
         $handlerLocatorDefinition = $container->getDefinition($container->getDefinition("$busId.messenger.handler_resolver")->getArgument(0));
         $this->assertSame(ServiceLocator::class, $handlerLocatorDefinition->getClass());
         $this->assertEquals(
-            array(
+            [
                 'handler.'.DummyMessage::class => new ServiceClosureArgument(new Reference(DummyHandler::class)),
                 'handler.'.SecondMessage::class => new ServiceClosureArgument(new Reference(MissingArgumentTypeHandler::class)),
-            ),
+            ],
             $handlerLocatorDefinition->getArgument(0)
         );
 
         $this->assertEquals(
-            array(DummyReceiver::class => new Reference(DummyReceiver::class)),
+            [DummyReceiver::class => new Reference(DummyReceiver::class)],
             $container->getDefinition('messenger.receiver_locator')->getArgument(0)
         );
     }
@@ -83,22 +83,22 @@ public function testProcess()
     public function testProcessHandlersByBus()
     {
         $container = $this->getContainerBuilder($commandBusId = 'command_bus');
-        $container->register($queryBusId = 'query_bus', MessageBusInterface::class)->setArgument(0, array())->addTag('messenger.bus');
+        $container->register($queryBusId = 'query_bus', MessageBusInterface::class)->setArgument(0, [])->addTag('messenger.bus');
         $container->register('messenger.middleware.call_message_handler', HandleMessageMiddleware::class)
             ->addArgument(null)
             ->setAbstract(true)
         ;
 
-        $middlewares = array(array('id' => 'call_message_handler'));
+        $middlewares = [['id' => 'call_message_handler']];
 
         $container->setParameter($commandBusId.'.middleware', $middlewares);
         $container->setParameter($queryBusId.'.middleware', $middlewares);
 
-        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', array('bus' => $commandBusId));
-        $container->register(DummyQueryHandler::class)->addTag('messenger.message_handler', array('bus' => $queryBusId));
+        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', ['bus' => $commandBusId]);
+        $container->register(DummyQueryHandler::class)->addTag('messenger.message_handler', ['bus' => $queryBusId]);
         $container->register(MultipleBusesMessageHandler::class)
-            ->addTag('messenger.message_handler', array('bus' => $commandBusId))
-            ->addTag('messenger.message_handler', array('bus' => $queryBusId))
+            ->addTag('messenger.message_handler', ['bus' => $commandBusId])
+            ->addTag('messenger.message_handler', ['bus' => $queryBusId])
         ;
 
         (new ResolveClassPass())->process($container);
@@ -107,20 +107,20 @@ public function testProcessHandlersByBus()
         $commandBusHandlerLocatorDefinition = $container->getDefinition($container->getDefinition("$commandBusId.messenger.handler_resolver")->getArgument(0));
         $this->assertSame(ServiceLocator::class, $commandBusHandlerLocatorDefinition->getClass());
         $this->assertEquals(
-            array(
+            [
                 'handler.'.DummyCommand::class => new ServiceClosureArgument(new Reference(DummyCommandHandler::class)),
                 'handler.'.MultipleBusesMessage::class => new ServiceClosureArgument(new Reference(MultipleBusesMessageHandler::class)),
-            ),
+            ],
             $commandBusHandlerLocatorDefinition->getArgument(0)
         );
 
         $queryBusHandlerLocatorDefinition = $container->getDefinition($container->getDefinition("$queryBusId.messenger.handler_resolver")->getArgument(0));
         $this->assertSame(ServiceLocator::class, $queryBusHandlerLocatorDefinition->getClass());
         $this->assertEquals(
-            array(
+            [
                 'handler.'.DummyQuery::class => new ServiceClosureArgument(new Reference(DummyQueryHandler::class)),
                 'handler.'.MultipleBusesMessage::class => new ServiceClosureArgument(new Reference(MultipleBusesMessageHandler::class)),
-            ),
+            ],
             $queryBusHandlerLocatorDefinition->getArgument(0)
         );
     }
@@ -133,7 +133,7 @@ public function testProcessTagWithUnknownBus()
     {
         $container = $this->getContainerBuilder($commandBusId = 'command_bus');
 
-        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', array('bus' => 'unknown_bus'));
+        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', ['bus' => 'unknown_bus']);
 
         (new ResolveClassPass())->process($container);
         (new MessengerPass())->process($container);
@@ -164,7 +164,7 @@ public function testGetClassesFromTheHandlerSubscriberInterface()
         $definition = $container->getDefinition($handlerReference);
 
         $this->assertSame(ChainHandler::class, $definition->getClass());
-        $this->assertEquals(array(new Reference(PrioritizedHandler::class), new Reference(HandlerWithMultipleMessages::class)), $definition->getArgument(0));
+        $this->assertEquals([new Reference(PrioritizedHandler::class), new Reference(HandlerWithMultipleMessages::class)], $definition->getArgument(0));
     }
 
     public function testGetClassesAndMethodsAndPrioritiesFromTheSubscriber()
@@ -190,8 +190,8 @@ public function testGetClassesAndMethodsAndPrioritiesFromTheSubscriber()
         $dummyHandlerReference = (string) $handlerMapping['handler.'.DummyMessage::class]->getValues()[0];
         $dummyHandlerDefinition = $container->getDefinition($dummyHandlerReference);
         $this->assertSame('callable', $dummyHandlerDefinition->getClass());
-        $this->assertEquals(array(new Reference(HandlerMappingMethods::class), 'dummyMethod'), $dummyHandlerDefinition->getArgument(0));
-        $this->assertSame(array('Closure', 'fromCallable'), $dummyHandlerDefinition->getFactory());
+        $this->assertEquals([new Reference(HandlerMappingMethods::class), 'dummyMethod'], $dummyHandlerDefinition->getArgument(0));
+        $this->assertSame(['Closure', 'fromCallable'], $dummyHandlerDefinition->getFactory());
 
         $secondHandlerReference = (string) $handlerMapping['handler.'.SecondMessage::class]->getValues()[0];
         $secondHandlerDefinition = $container->getDefinition($secondHandlerReference);
@@ -219,11 +219,11 @@ public function testItRegistersReceivers()
     {
         $container = $this->getContainerBuilder();
         $container->register('message_bus', MessageBusInterface::class)->addTag('messenger.bus');
-        $container->register(AmqpReceiver::class, AmqpReceiver::class)->addTag('messenger.receiver', array('alias' => 'amqp'));
+        $container->register(AmqpReceiver::class, AmqpReceiver::class)->addTag('messenger.receiver', ['alias' => 'amqp']);
 
         (new MessengerPass())->process($container);
 
-        $this->assertEquals(array('amqp' => new Reference(AmqpReceiver::class), AmqpReceiver::class => new Reference(AmqpReceiver::class)), $container->getDefinition('messenger.receiver_locator')->getArgument(0));
+        $this->assertEquals(['amqp' => new Reference(AmqpReceiver::class), AmqpReceiver::class => new Reference(AmqpReceiver::class)], $container->getDefinition('messenger.receiver_locator')->getArgument(0));
     }
 
     public function testItRegistersReceiversWithoutTagName()
@@ -234,35 +234,35 @@ public function testItRegistersReceiversWithoutTagName()
 
         (new MessengerPass())->process($container);
 
-        $this->assertEquals(array(AmqpReceiver::class => new Reference(AmqpReceiver::class)), $container->getDefinition('messenger.receiver_locator')->getArgument(0));
+        $this->assertEquals([AmqpReceiver::class => new Reference(AmqpReceiver::class)], $container->getDefinition('messenger.receiver_locator')->getArgument(0));
     }
 
     public function testItRegistersMultipleReceiversAndSetsTheReceiverNamesOnTheCommand()
     {
         $container = $this->getContainerBuilder();
-        $container->register('console.command.messenger_consume_messages', ConsumeMessagesCommand::class)->setArguments(array(
+        $container->register('console.command.messenger_consume_messages', ConsumeMessagesCommand::class)->setArguments([
             new Reference('message_bus'),
             new Reference('messenger.receiver_locator'),
             null,
             null,
-        ));
+        ]);
 
-        $container->register(AmqpReceiver::class, AmqpReceiver::class)->addTag('messenger.receiver', array('alias' => 'amqp'));
-        $container->register(DummyReceiver::class, DummyReceiver::class)->addTag('messenger.receiver', array('alias' => 'dummy'));
+        $container->register(AmqpReceiver::class, AmqpReceiver::class)->addTag('messenger.receiver', ['alias' => 'amqp']);
+        $container->register(DummyReceiver::class, DummyReceiver::class)->addTag('messenger.receiver', ['alias' => 'dummy']);
 
         (new MessengerPass())->process($container);
 
-        $this->assertSame(array('amqp', 'dummy'), $container->getDefinition('console.command.messenger_consume_messages')->getArgument(3));
+        $this->assertSame(['amqp', 'dummy'], $container->getDefinition('console.command.messenger_consume_messages')->getArgument(3));
     }
 
     public function testItRegistersSenders()
     {
         $container = $this->getContainerBuilder();
-        $container->register(AmqpSender::class, AmqpSender::class)->addTag('messenger.sender', array('alias' => 'amqp'));
+        $container->register(AmqpSender::class, AmqpSender::class)->addTag('messenger.sender', ['alias' => 'amqp']);
 
         (new MessengerPass())->process($container);
 
-        $this->assertEquals(array('amqp' => new Reference(AmqpSender::class), AmqpSender::class => new Reference(AmqpSender::class)), $container->getDefinition('messenger.sender_locator')->getArgument(0));
+        $this->assertEquals(['amqp' => new Reference(AmqpSender::class), AmqpSender::class => new Reference(AmqpSender::class)], $container->getDefinition('messenger.sender_locator')->getArgument(0));
     }
 
     public function testItRegistersSenderWithoutTagName()
@@ -272,7 +272,7 @@ public function testItRegistersSenderWithoutTagName()
 
         (new MessengerPass())->process($container);
 
-        $this->assertEquals(array(AmqpSender::class => new Reference(AmqpSender::class)), $container->getDefinition('messenger.sender_locator')->getArgument(0));
+        $this->assertEquals([AmqpSender::class => new Reference(AmqpSender::class)], $container->getDefinition('messenger.sender_locator')->getArgument(0));
     }
 
     public function testItShouldNotThrowIfGeneratorIsReturnedInsteadOfArray()
@@ -290,11 +290,11 @@ public function testItShouldNotThrowIfGeneratorIsReturnedInsteadOfArray()
 
         $this->assertArrayHasKey('handler.'.DummyMessage::class, $handlerMapping);
         $firstReference = $handlerMapping['handler.'.DummyMessage::class]->getValues()[0];
-        $this->assertEquals(array(new Reference(HandlerWithGenerators::class), 'dummyMethod'), $container->getDefinition($firstReference)->getArgument(0));
+        $this->assertEquals([new Reference(HandlerWithGenerators::class), 'dummyMethod'], $container->getDefinition($firstReference)->getArgument(0));
 
         $this->assertArrayHasKey('handler.'.SecondMessage::class, $handlerMapping);
         $secondReference = $handlerMapping['handler.'.SecondMessage::class]->getValues()[0];
-        $this->assertEquals(array(new Reference(HandlerWithGenerators::class), 'secondMessage'), $container->getDefinition($secondReference)->getArgument(0));
+        $this->assertEquals([new Reference(HandlerWithGenerators::class), 'secondMessage'], $container->getDefinition($secondReference)->getArgument(0));
     }
 
     /**
@@ -441,8 +441,8 @@ public function testRegistersTraceableBusesToCollector()
         (new MessengerPass())->process($container);
 
         $this->assertTrue($container->hasDefinition($debuggedFooBusId = 'debug.traced.'.$fooBusId));
-        $this->assertSame(array($fooBusId, null, 0), $container->getDefinition($debuggedFooBusId)->getDecoratedService());
-        $this->assertEquals(array(array('registerBus', array($fooBusId, new Reference($debuggedFooBusId)))), $container->getDefinition('data_collector.messenger')->getMethodCalls());
+        $this->assertSame([$fooBusId, null, 0], $container->getDefinition($debuggedFooBusId)->getDecoratedService());
+        $this->assertEquals([['registerBus', [$fooBusId, new Reference($debuggedFooBusId)]]], $container->getDefinition('data_collector.messenger')->getMethodCalls());
     }
 
     public function testRegistersMiddlewareFromServices()
@@ -453,12 +453,12 @@ public function testRegistersMiddlewareFromServices()
         $container->register('middleware_with_factory_using_default', UselessMiddleware::class)->addArgument('some_default')->setAbstract(true);
         $container->register(UselessMiddleware::class, UselessMiddleware::class);
 
-        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', array(
-            array('id' => UselessMiddleware::class),
-            array('id' => 'middleware_with_factory', 'arguments' => array('foo', 'bar')),
-            array('id' => 'middleware_with_factory_using_default'),
-            array('id' => 'allow_no_handler'),
-        ));
+        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', [
+            ['id' => UselessMiddleware::class],
+            ['id' => 'middleware_with_factory', 'arguments' => ['foo', 'bar']],
+            ['id' => 'middleware_with_factory_using_default'],
+            ['id' => 'allow_no_handler'],
+        ]);
 
         (new MessengerPass())->process($container);
         (new ResolveChildDefinitionsPass())->process($container);
@@ -467,24 +467,24 @@ public function testRegistersMiddlewareFromServices()
 
         $this->assertTrue($container->hasDefinition($factoryChildMiddlewareId = $fooBusId.'.middleware.middleware_with_factory'));
         $this->assertEquals(
-            array('foo', 'bar'),
+            ['foo', 'bar'],
             $container->getDefinition($factoryChildMiddlewareId)->getArguments(),
             'parent default argument is overridden, and next ones appended'
         );
 
         $this->assertTrue($container->hasDefinition($factoryWithDefaultChildMiddlewareId = $fooBusId.'.middleware.middleware_with_factory_using_default'));
         $this->assertEquals(
-            array('some_default'),
+            ['some_default'],
             $container->getDefinition($factoryWithDefaultChildMiddlewareId)->getArguments(),
             'parent default argument is used'
         );
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new Reference(UselessMiddleware::class),
             new Reference($factoryChildMiddlewareId),
             new Reference($factoryWithDefaultChildMiddlewareId),
             new Reference($childMiddlewareId),
-        ), $container->getDefinition($fooBusId)->getArgument(0));
+        ], $container->getDefinition($fooBusId)->getArgument(0));
         $this->assertFalse($container->hasParameter($middlewareParameter));
     }
 
@@ -495,9 +495,9 @@ public function testRegistersMiddlewareFromServices()
     public function testCannotRegistersAnUndefinedMiddleware()
     {
         $container = $this->getContainerBuilder($fooBusId = 'messenger.bus.foo');
-        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', array(
-            array('id' => 'not_defined_middleware', 'arguments' => array()),
-        ));
+        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', [
+            ['id' => 'not_defined_middleware', 'arguments' => []],
+        ]);
 
         (new MessengerPass())->process($container);
     }
@@ -510,9 +510,9 @@ public function testMiddlewareFactoryDefinitionMustBeAbstract()
     {
         $container = $this->getContainerBuilder($fooBusId = 'messenger.bus.foo');
         $container->register('not_an_abstract_definition', UselessMiddleware::class);
-        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', array(
-            array('id' => 'not_an_abstract_definition', 'arguments' => array('foo')),
-        ));
+        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', [
+            ['id' => 'not_an_abstract_definition', 'arguments' => ['foo']],
+        ]);
 
         (new MessengerPass())->process($container);
     }
@@ -520,41 +520,41 @@ public function testMiddlewareFactoryDefinitionMustBeAbstract()
     public function testItRegistersTheDebugCommand()
     {
         $container = $this->getContainerBuilder($commandBusId = 'command_bus');
-        $container->register($queryBusId = 'query_bus', MessageBusInterface::class)->setArgument(0, array())->addTag('messenger.bus');
-        $container->register($emptyBus = 'empty_bus', MessageBusInterface::class)->setArgument(0, array())->addTag('messenger.bus');
+        $container->register($queryBusId = 'query_bus', MessageBusInterface::class)->setArgument(0, [])->addTag('messenger.bus');
+        $container->register($emptyBus = 'empty_bus', MessageBusInterface::class)->setArgument(0, [])->addTag('messenger.bus');
         $container->register('messenger.middleware.call_message_handler', HandleMessageMiddleware::class)
             ->addArgument(null)
             ->setAbstract(true)
         ;
 
-        $container->register('console.command.messenger_debug', DebugCommand::class)->addArgument(array());
+        $container->register('console.command.messenger_debug', DebugCommand::class)->addArgument([]);
 
-        $middlewares = array(array('id' => 'call_message_handler'));
+        $middlewares = [['id' => 'call_message_handler']];
 
         $container->setParameter($commandBusId.'.middleware', $middlewares);
         $container->setParameter($queryBusId.'.middleware', $middlewares);
 
-        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', array('bus' => $commandBusId));
-        $container->register(DummyQueryHandler::class)->addTag('messenger.message_handler', array('bus' => $queryBusId));
+        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', ['bus' => $commandBusId]);
+        $container->register(DummyQueryHandler::class)->addTag('messenger.message_handler', ['bus' => $queryBusId]);
         $container->register(MultipleBusesMessageHandler::class)
-            ->addTag('messenger.message_handler', array('bus' => $commandBusId))
-            ->addTag('messenger.message_handler', array('bus' => $queryBusId))
+            ->addTag('messenger.message_handler', ['bus' => $commandBusId])
+            ->addTag('messenger.message_handler', ['bus' => $queryBusId])
         ;
 
         (new ResolveClassPass())->process($container);
         (new MessengerPass())->process($container);
 
-        $this->assertEquals(array(
-            $commandBusId => array(
-                DummyCommand::class => array(DummyCommandHandler::class),
-                MultipleBusesMessage::class => array(MultipleBusesMessageHandler::class),
-            ),
-            $queryBusId => array(
-                DummyQuery::class => array(DummyQueryHandler::class),
-                MultipleBusesMessage::class => array(MultipleBusesMessageHandler::class),
-            ),
-            $emptyBus => array(),
-        ), $container->getDefinition('console.command.messenger_debug')->getArgument(0));
+        $this->assertEquals([
+            $commandBusId => [
+                DummyCommand::class => [DummyCommandHandler::class],
+                MultipleBusesMessage::class => [MultipleBusesMessageHandler::class],
+            ],
+            $queryBusId => [
+                DummyQuery::class => [DummyQueryHandler::class],
+                MultipleBusesMessage::class => [MultipleBusesMessageHandler::class],
+            ],
+            $emptyBus => [],
+        ], $container->getDefinition('console.command.messenger_debug')->getArgument(0));
     }
 
     private function getContainerBuilder(string $busId = 'message_bus'): ContainerBuilder
@@ -562,7 +562,7 @@ private function getContainerBuilder(string $busId = 'message_bus'): ContainerBu
         $container = new ContainerBuilder();
         $container->setParameter('kernel.debug', true);
 
-        $container->register($busId, MessageBusInterface::class)->addTag('messenger.bus')->setArgument(0, array());
+        $container->register($busId, MessageBusInterface::class)->addTag('messenger.bus')->setArgument(0, []);
         if ('message_bus' !== $busId) {
             $container->setAlias('message_bus', $busId);
         }
@@ -627,7 +627,7 @@ class UndefinedMessageHandlerViaSubscriberInterface implements MessageSubscriber
 {
     public static function getHandledMessages(): iterable
     {
-        return array(UndefinedMessage::class);
+        return [UndefinedMessage::class];
     }
 
     public function __invoke()
@@ -664,10 +664,10 @@ class HandlerWithMultipleMessages implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        return array(
+        return [
             DummyMessage::class,
             SecondMessage::class,
-        );
+        ];
     }
 
     public function __invoke()
@@ -679,9 +679,9 @@ class PrioritizedHandler implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        return array(
-            array(SecondMessage::class, 10),
-        );
+        return [
+            [SecondMessage::class, 10],
+        ];
     }
 
     public function __invoke()
@@ -693,10 +693,10 @@ class HandlerMappingMethods implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        return array(
+        return [
             DummyMessage::class => 'dummyMethod',
-            SecondMessage::class => array('secondMessage', 20),
-        );
+            SecondMessage::class => ['secondMessage', 20],
+        ];
     }
 
     public function dummyMethod()
@@ -712,9 +712,9 @@ class HandlerMappingWithNonExistentMethod implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        return array(
+        return [
             DummyMessage::class => 'dummyMethod',
-        );
+        ];
     }
 }
 
@@ -722,7 +722,7 @@ class HandleNoMessageHandler implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        return array();
+        return [];
     }
 
     public function __invoke()
diff --git a/src/Symfony/Component/Messenger/Tests/EnvelopeTest.php b/src/Symfony/Component/Messenger/Tests/EnvelopeTest.php
index 053275b6e714..e588ef60d69e 100644
--- a/src/Symfony/Component/Messenger/Tests/EnvelopeTest.php
+++ b/src/Symfony/Component/Messenger/Tests/EnvelopeTest.php
@@ -25,9 +25,9 @@ class EnvelopeTest extends TestCase
 {
     public function testConstruct()
     {
-        $envelope = new Envelope($dummy = new DummyMessage('dummy'), array(
+        $envelope = new Envelope($dummy = new DummyMessage('dummy'), [
             $receivedConfig = new ReceivedMessage(),
-        ));
+        ]);
 
         $this->assertSame($dummy, $envelope->getMessage());
         $this->assertArrayHasKey(ReceivedMessage::class, $configs = $envelope->all());
@@ -66,7 +66,7 @@ public function testAll()
     {
         $envelope = Envelope::wrap($dummy = new DummyMessage('dummy'))
             ->with($receivedConfig = new ReceivedMessage())
-            ->with($validationConfig = new ValidationConfiguration(array('foo')))
+            ->with($validationConfig = new ValidationConfiguration(['foo']))
         ;
 
         $configs = $envelope->all();
diff --git a/src/Symfony/Component/Messenger/Tests/Handler/ChainHandlerTest.php b/src/Symfony/Component/Messenger/Tests/Handler/ChainHandlerTest.php
index 5126697fb9df..b4a97ef1d6ae 100644
--- a/src/Symfony/Component/Messenger/Tests/Handler/ChainHandlerTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Handler/ChainHandlerTest.php
@@ -21,14 +21,14 @@ public function testItCallsTheHandlersAndReturnsAllResults()
     {
         $message = new DummyMessage('Hey');
 
-        $handler1 = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $handler1 = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $handler1
             ->expects($this->once())
             ->method('__invoke')
             ->with($message)
             ->willReturn('Hello')
         ;
-        $handler2 = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $handler2 = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $handler2
             ->expects($this->once())
             ->method('__invoke')
@@ -36,9 +36,9 @@ public function testItCallsTheHandlersAndReturnsAllResults()
             ->willReturn('World')
         ;
 
-        $results = (new ChainHandler(array($handler1, $handler2)))($message);
+        $results = (new ChainHandler([$handler1, $handler2]))($message);
 
-        $this->assertSame(array('Hello', 'World'), $results);
+        $this->assertSame(['Hello', 'World'], $results);
     }
 
     /**
@@ -47,6 +47,6 @@ public function testItCallsT
10000
heHandlersAndReturnsAllResults()
      */
     public function testInvalidArgumentExceptionOnEmptyHandlers()
     {
-        new ChainHandler(array());
+        new ChainHandler([]);
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/MessageBusTest.php b/src/Symfony/Component/Messenger/Tests/MessageBusTest.php
index 9dc93a9d1521..c5ef7c49467a 100644
--- a/src/Symfony/Component/Messenger/Tests/MessageBusTest.php
+++ b/src/Symfony/Component/Messenger/Tests/MessageBusTest.php
@@ -58,10 +58,10 @@ public function testItCallsMiddlewareAndChainTheReturnValue()
             ->with($message, $this->anything())
             ->willReturn($responseFromDepthMiddleware);
 
-        $bus = new MessageBus(array(
+        $bus = new MessageBus([
             $firstMiddleware,
             $secondMiddleware,
-        ));
+        ]);
 
         $this->assertEquals($responseFromDepthMiddleware, $bus->dispatch($message));
     }
@@ -69,7 +69,7 @@ public function testItCallsMiddlewareAndChainTheReturnValue()
     public function testItKeepsTheEnvelopeEvenThroughAMiddlewareThatIsNotEnvelopeAware()
     {
         $message = new DummyMessage('Hello');
-        $envelope = new Envelope($message, array(new ReceivedMessage()));
+        $envelope = new Envelope($message, [new ReceivedMessage()]);
 
         $firstMiddleware = $this->getMockBuilder(MiddlewareInterface::class)->getMock();
         $firstMiddleware->expects($this->once())
@@ -79,16 +79,16 @@ public function testItKeepsTheEnvelopeEvenThroughAMiddlewareThatIsNotEnvelopeAwa
                 return $next($message);
             }));
 
-        $secondMiddleware = $this->getMockBuilder(array(MiddlewareInterface::class, EnvelopeAwareInterface::class))->getMock();
+        $secondMiddleware = $this->getMockBuilder([MiddlewareInterface::class, EnvelopeAwareInterface::class])->getMock();
         $secondMiddleware->expects($this->once())
             ->method('handle')
             ->with($envelope, $this->anything())
         ;
 
-        $bus = new MessageBus(array(
+        $bus = new MessageBus([
             $firstMiddleware,
             $secondMiddleware,
-        ));
+        ]);
 
         $bus->dispatch($envelope);
     }
@@ -96,10 +96,10 @@ public function testItKeepsTheEnvelopeEvenThroughAMiddlewareThatIsNotEnvelopeAwa
     public function testThatAMiddlewareCanAddSomeItemsToTheEnvelope()
     {
         $message = new DummyMessage('Hello');
-        $envelope = new Envelope($message, array(new ReceivedMessage()));
+        $envelope = new Envelope($message, [new ReceivedMessage()]);
         $envelopeWithAnotherItem = $envelope->with(new AnEnvelopeItem());
 
-        $firstMiddleware = $this->getMockBuilder(array(MiddlewareInterface::class, EnvelopeAwareInterface::class))->getMock();
+        $firstMiddleware = $this->getMockBuilder([MiddlewareInterface::class, EnvelopeAwareInterface::class])->getMock();
         $firstMiddleware->expects($this->once())
             ->method('handle')
             ->with($envelope, $this->anything())
@@ -115,17 +115,17 @@ public function testThatAMiddlewareCanAddSomeItemsToTheEnvelope()
                 return $next($message);
             }));
 
-        $thirdMiddleware = $this->getMockBuilder(array(MiddlewareInterface::class, EnvelopeAwareInterface::class))->getMock();
+        $thirdMiddleware = $this->getMockBuilder([MiddlewareInterface::class, EnvelopeAwareInterface::class])->getMock();
         $thirdMiddleware->expects($this->once())
             ->method('handle')
             ->with($envelopeWithAnotherItem, $this->anything())
         ;
 
-        $bus = new MessageBus(array(
+        $bus = new MessageBus([
             $firstMiddleware,
             $secondMiddleware,
             $thirdMiddleware,
-        ));
+        ]);
 
         $bus->dispatch($envelope);
     }
@@ -133,7 +133,7 @@ public function testThatAMiddlewareCanAddSomeItemsToTheEnvelope()
     public function testThatAMiddlewareCanUpdateTheMessageWhileKeepingTheEnvelopeItems()
     {
         $message = new DummyMessage('Hello');
-        $envelope = new Envelope($message, $items = array(new ReceivedMessage()));
+        $envelope = new Envelope($message, $items = [new ReceivedMessage()]);
 
         $changedMessage = new DummyMessage('Changed');
         $expectedEnvelope = new Envelope($changedMessage, $items);
@@ -146,16 +146,16 @@ public function testThatAMiddlewareCanUpdateTheMessageWhileKeepingTheEnvelopeIte
                 return $next($changedMessage);
             }));
 
-        $secondMiddleware = $this->getMockBuilder(array(MiddlewareInterface::class, EnvelopeAwareInterface::class))->getMock();
+        $secondMiddleware = $this->getMockBuilder([MiddlewareInterface::class, EnvelopeAwareInterface::class])->getMock();
         $secondMiddleware->expects($this->once())
             ->method('handle')
             ->with($expectedEnvelope, $this->anything())
         ;
 
-        $bus = new MessageBus(array(
+        $bus = new MessageBus([
             $firstMiddleware,
             $secondMiddleware,
-        ));
+        ]);
 
         $bus->dispatch($envelope);
     }
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/AllowNoHandlerMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/AllowNoHandlerMiddlewareTest.php
index 64ed417993a6..5621e82b681f 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/AllowNoHandlerMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/AllowNoHandlerMiddlewareTest.php
@@ -22,7 +22,7 @@ public function testItCallsNextMiddlewareAndReturnsItsResult()
     {
         $message = new DummyMessage('Hey');
 
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $next->expects($this->once())->method('__invoke')->with($message)->willReturn('Foo');
 
         $middleware = new AllowNoHandlerMiddleware();
@@ -31,7 +31,7 @@ public function testItCallsNextMiddlewareAndReturnsItsResult()
 
     public function testItCatchesTheNoHandlerException()
     {
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $next->expects($this->once())->method('__invoke')->willThrowException(new NoHandlerForMessageException());
 
         $middleware = new AllowNoHandlerMiddleware();
@@ -45,7 +45,7 @@ public function testItCatchesTheNoHandlerException()
      */
     public function testItDoesNotCatchOtherExceptions()
     {
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $next->expects($this->once())->method('__invoke')->willThrowException(new \RuntimeException('Something went wrong.'));
 
         $middleware = new AllowNoHandlerMiddleware();
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/Configuration/ValidationConfigurationTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/Configuration/ValidationConfigurationTest.php
index b4ccf614b23b..e361dbcffb41 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/Configuration/ValidationConfigurationTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/Configuration/ValidationConfigurationTest.php
@@ -22,17 +22,17 @@ class ValidationConfigurationTest extends TestCase
 {
     public function testConfig()
     {
-        $config = new ValidationConfiguration($groups = array('Default', 'Extra'));
+        $config = new ValidationConfiguration($groups = ['Default', 'Extra']);
         $this->assertSame($groups, $config->getGroups());
 
-        $config = new ValidationConfiguration($groups = new GroupSequence(array('Default', 'Then')));
+        $config = new ValidationConfiguration($groups = new GroupSequence(['Default', 'Then']));
         $this->assertSame($groups, $config->getGroups());
     }
 
     public function testSerializable()
     {
         $this->assertTrue(is_subclass_of(ValidationConfiguration::class, \Serializable::class, true));
-        $this->assertEquals($config = new ValidationConfiguration(array('Default', 'Extra')), unserialize(serialize($config)));
-        $this->assertEquals($config = new ValidationConfiguration(new GroupSequence(array('Default', 'Then'))), unserialize(serialize($config)));
+        $this->assertEquals($config = new ValidationConfiguration(['Default', 'Extra']), unserialize(serialize($config)));
+        $this->assertEquals($config = new ValidationConfiguration(new GroupSequence(['Default', 'Then'])), unserialize(serialize($config)));
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/HandleMessageMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/HandleMessageMiddlewareTest.php
index 993a2de81265..6e37da528cae 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/HandleMessageMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/HandleMessageMiddlewareTest.php
@@ -22,14 +22,14 @@ public function testItCallsTheHandlerAndNextMiddleware()
     {
         $message = new DummyMessage('Hey');
 
-        $handler = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $handler = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $handler->method('__invoke')->willReturn('Hello');
 
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
-        $middleware = new HandleMessageMiddleware(new HandlerLocator(array(
+        $middleware = new HandleMessageMiddleware(new HandlerLocator([
             DummyMessage::class => $handler,
-        )));
+        ]));
 
         $handler->expects($this->once())->method('__invoke')->with($message);
         $next->expects($this->once())->method('__invoke')->with($message);
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/LoggingMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/LoggingMiddlewareTest.php
index e662a130fbba..7fee6d5b9629 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/LoggingMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/LoggingMiddlewareTest.php
@@ -27,7 +27,7 @@ public function testDebugLogAndNextMiddleware()
             ->expects($this->exactly(2))
             ->method('debug')
         ;
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $next
             ->expects($this->once())
             ->method('__invoke')
@@ -56,7 +56,7 @@ public function testWarningLogOnException()
             ->expects($this->once())
             ->method('warning')
         ;
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $next
             ->expects($this->once())
             ->method('__invoke')
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/ValidationMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/ValidationMiddlewareTest.php
index b2a44b5fa672..2873582aa318 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/ValidationMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/ValidationMiddlewareTest.php
@@ -32,7 +32,7 @@ public function testValidateAndNextMiddleware()
             ->with($message)
             ->willReturn($this->createMock(ConstraintViolationListInterface::class))
         ;
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $next
             ->expects($this->once())
             ->method('__invoke')
@@ -47,7 +47,7 @@ public function testValidateAndNextMiddleware()
 
     public function testValidateWithConfigurationAndNextMiddleware()
     {
-        $envelope = Envelope::wrap($message = new DummyMessage('Hey'))->with(new ValidationConfiguration($groups = array('Default', 'Extra')));
+        $envelope = Envelope::wrap($message = new DummyMessage('Hey'))->with(new ValidationConfiguration($groups = ['Default', 'Extra']));
 
         $validator = $this->createMock(ValidatorInterface::class);
         $validator
@@ -56,7 +56,7 @@ public function testValidateWithConfigurationAndNextMiddleware()
             ->with($message, null, $groups)
             ->willReturn($this->createMock(ConstraintViolationListInterface::class))
         ;
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $next
             ->expects($this->once())
             ->method('__invoke')
@@ -90,7 +90,7 @@ public function testValidationFailedException()
             ->with($message)
             ->willReturn($violationList)
         ;
-        $next = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $next = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $next
             ->expects($this->never())
             ->method('__invoke')
diff --git a/src/Symfony/Component/Messenger/Tests/TraceableMessageBusTest.php b/src/Symfony/Component/Messenger/Tests/TraceableMessageBusTest.php
index ac07ee14d5a3..b4eeca12889c 100644
--- a/src/Symfony/Component/Messenger/Tests/TraceableMessageBusTest.php
+++ b/src/Symfony/Component/Messenger/Tests/TraceableMessageBusTest.php
@@ -25,16 +25,16 @@ public function testItTracesResult()
         $message = new DummyMessage('Hello');
 
         $bus = $this->getMockBuilder(MessageBusInterface::class)->getMock();
-        $bus->expects($this->once())->method('dispatch')->with($message)->willReturn($result = array('foo' => 'bar'));
+        $bus->expects($this->once())->method('dispatch')->with($message)->willReturn($result = ['foo' => 'bar']);
 
         $traceableBus = new TraceableMessageBus($bus);
         $this->assertSame($result, $traceableBus->dispatch($message));
         $this->assertCount(1, $tracedMessages = $traceableBus->getDispatchedMessages());
-        $this->assertArraySubset(array(
+        $this->assertArraySubset([
             'message' => $message,
             'result' => $result,
             'envelopeItems' => null,
-        ), $tracedMessages[0], true);
+        ], $tracedMessages[0], true);
     }
 
     public function testItTracesResultWithEnvelope()
@@ -42,16 +42,16 @@ public function testItTracesResultWithEnvelope()
         $envelope = Envelope::wrap($message = new DummyMessage('Hello'))->with($envelopeItem = new AnEnvelopeItem());
 
         $bus = $this->getMockBuilder(MessageBusInterface::class)->getMock();
-        $bus->expects($this->once())->method('dispatch')->with($envelope)->willReturn($result = array('foo' => 'bar'));
+        $bus->expects($this->once())->method('dispatch')->with($envelope)->willReturn($result = ['foo' => 'bar']);
 
         $traceableBus = new TraceableMessageBus($bus);
         $this->assertSame($result, $traceableBus->dispatch($envelope));
         $this->assertCount(1, $tracedMessages = $traceableBus->getDispatchedMessages());
-        $this->assertArraySubset(array(
+        $this->assertArraySubset([
             'message' => $message,
             'result' => $result,
-            'envelopeItems' => array($envelopeItem),
-        ), $tracedMessages[0], true);
+            'envelopeItems' => [$envelopeItem],
+        ], $tracedMessages[0], true);
     }
 
     public function testItTracesExceptions()
@@ -70,10 +70,10 @@ public function testItTracesExceptions()
         }
 
         $this->assertCount(1, $tracedMessages = $traceableBus->getDispatchedMessages());
-        $this->assertArraySubset(array(
+        $this->assertArraySubset([
             'message' => $message,
             'exception' => $exception,
             'envelopeItems' => null,
-        ), $tracedMessages[0], true);
+        ], $tracedMessages[0], true);
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpExtIntegrationTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpExtIntegrationTest.php
index 7638ebba2fdf..e08e294be9a5 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpExtIntegrationTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpExtIntegrationTest.php
@@ -41,7 +41,7 @@ protected function setUp()
     public function testItSendsAndReceivesMessages()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $connection = Connection::fromDsn(getenv('MESSENGER_AMQP_DSN'));
@@ -67,7 +67,7 @@ public function testItSendsAndReceivesMessages()
     public function testItReceivesSignals()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $connection = Connection::fromDsn(getenv('MESSENGER_AMQP_DSN'));
@@ -79,10 +79,10 @@ public function testItReceivesSignals()
 
         $amqpReadTimeout = 30;
         $dsn = getenv('MESSENGER_AMQP_DSN').'?read_timeout='.$amqpReadTimeout;
-        $process = new PhpProcess(file_get_contents(__DIR__.'/Fixtures/long_receiver.php'), null, array(
+        $process = new PhpProcess(file_get_contents(__DIR__.'/Fixtures/long_receiver.php'), null, [
             'COMPONENT_ROOT' => __DIR__.'/../../../',
             'DSN' => $dsn,
-        ));
+        ]);
 
         $process->start();
 
@@ -116,10 +116,10 @@ public function testItReceivesSignals()
     public function testItSupportsTimeoutAndTicksNullMessagesToTheHandler()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
-        $connection = Connection::fromDsn(getenv('MESSENGER_AMQP_DSN'), array('read_timeout' => '1'));
+        $connection = Connection::fromDsn(getenv('MESSENGER_AMQP_DSN'), ['read_timeout' => '1']);
         $connection->setup();
         $connection->queue()->purge();
 
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpReceiverTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpReceiverTest.php
index 566659833765..e0de5fdbd850 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpReceiverTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpReceiverTest.php
@@ -30,14 +30,14 @@ class AmqpReceiverTest extends TestCase
     public function testItSendTheDecodedMessageToTheHandlerAndAcknowledgeIt()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $envelope = $this->getMockBuilder(\AMQPEnvelope::class)->getMock();
         $envelope->method('getBody')->willReturn('{"message": "Hi"}');
-        $envelope->method('getHeaders')->willReturn(array(
+        $envelope->method('getHeaders')->willReturn([
             'type' => DummyMessage::class,
-        ));
+        ]);
 
         $connection = $this->getMockBuilder(Connection::class)->disableOriginalConstructor()->getMock();
         $connection->method('get')->willReturn($envelope);
@@ -57,14 +57,14 @@ public function testItSendTheDecodedMessageToTheHandlerAndAcknowledgeIt()
     public function testItNonAcknowledgeTheMessageIfAnExceptionHappened()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $envelope = $this->getMockBuilder(\AMQPEnvelope::class)->getMock();
         $envelope->method('getBody')->willReturn('{"message": "Hi"}');
-        $envelope->method('getHeaders')->willReturn(array(
+        $envelope->method('getHeaders')->willReturn([
             'type' => DummyMessage::class,
-        ));
+        ]);
 
         $connection = $this->getMockBuilder(Connection::class)->disableOriginalConstructor()->getMock();
         $connection->method('get')->willReturn($envelope);
@@ -83,14 +83,14 @@ public function testItNonAcknowledgeTheMessageIfAnExceptionHappened()
     public function testItRejectsTheMessageIfTheExceptionIsARejectMessageExceptionInterface()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $envelope = $this->getMockBuilder(\AMQPEnvelope::class)->getMock();
         $envelope->method('getBody')->willReturn('{"message": "Hi"}');
-        $envelope->method('getHeaders')->willReturn(array(
+        $envelope->method('getHeaders')->willReturn([
             'type' => DummyMessage::class,
-        ));
+        ]);
 
         $connection = $this->getMockBuilder(Connection::class)->disableOriginalConstructor()->getMock();
         $connection->method('get')->willReturn($envelope);
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpSenderTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpSenderTest.php
index 112ab63465a5..9f1c125be9c0 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpSenderTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpSenderTest.php
@@ -26,7 +26,7 @@ class AmqpSenderTest extends TestCase
     public function testItSendsTheEncodedMessage()
     {
         $envelope = Envelope::wrap(new DummyMessage('Oy'));
-        $encoded = array('body' => '...', 'headers' => array('type' => DummyMessage::class));
+        $encoded = ['body' => '...', 'headers' => ['type' => DummyMessage::class]];
 
         $encoder = $this->getMockBuilder(EncoderInterface::class)->getMock();
         $encoder->method('encode')->with($envelope)->willReturnOnConsecutiveCalls($encoded);
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportFactoryTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportFactoryTest.php
index 53a98e2263a0..a5b79a443f7f 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportFactoryTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportFactoryTest.php
@@ -28,9 +28,9 @@ public function testSupportsOnlyAmqpTransports()
             true
         );
 
-        $this->assertTrue($factory->supports('amqp://localhost', array()));
-        $this->assertFalse($factory->supports('sqs://localhost', array()));
-        $this->assertFalse($factory->supports('invalid-dsn', array()));
+        $this->assertTrue($factory->supports('amqp://localhost', []));
+        $this->assertFalse($factory->supports('sqs://localhost', []));
+        $this->assertFalse($factory->supports('invalid-dsn', []));
     }
 
     public function testItCreatesTheTransport()
@@ -41,8 +41,8 @@ public function testItCreatesTheTransport()
             true
         );
 
-        $expectedTransport = new AmqpTransport($encoder, $decoder, Connection::fromDsn('amqp://localhost', array('foo' => 'bar'), true), array('foo' => 'bar'), true);
+        $expectedTransport = new AmqpTransport($encoder, $decoder, Connection::fromDsn('amqp://localhost', ['foo' => 'bar'], true), ['foo' => 'bar'], true);
 
-        $this->assertEquals($expectedTransport, $factory->createTransport('amqp://localhost', array('foo' => 'bar')));
+        $this->assertEquals($expectedTransport, $factory->createTransport('amqp://localhost', ['foo' => 'bar']));
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportTest.php
index 3d003a270d06..80707d03e1bd 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportTest.php
@@ -44,9 +44,9 @@ public function testReceivesMessages()
 
         $amqpEnvelope = $this->getMockBuilder(\AMQPEnvelope::class)->getMock();
         $amqpEnvelope->method('getBody')->willReturn('body');
-        $amqpEnvelope->method('getHeaders')->willReturn(array('my' => 'header'));
+        $amqpEnvelope->method('getHeaders')->willReturn(['my' => 'header']);
 
-        $decoder->method('decode')->with(array('body' => 'body', 'headers' => array('my' => 'header')))->willReturn(Envelope::wrap($decodedMessage));
+        $decoder->method('decode')->with(['body' => 'body', 'headers' => ['my' => 'header']])->willReturn(Envelope::wrap($decodedMessage));
         $connection->method('get')->willReturn($amqpEnvelope);
 
         $transport->receive(function (Envelope $envelope) use ($transport, $decodedMessage) {
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/ConnectionTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/ConnectionTest.php
index 511f8fe3c441..cd0fc3999ecf 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/ConnectionTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/ConnectionTest.php
@@ -32,15 +32,15 @@ public function testItCannotBeConstructedWithAWrongDsn()
     public function testItGetsParametersFromTheDsn()
     {
         $this->assertEquals(
-            new Connection(array(
+            new Connection([
                 'host' => 'localhost',
                 'port' => 5672,
                 'vhost' => '/',
-            ), array(
+            ], [
                 'name' => 'messages',
-            ), array(
+            ], [
                 'name' => 'messages',
-            )),
+            ]),
             Connection::fromDsn('amqp://localhost/%2f/messages')
         );
     }
@@ -48,17 +48,17 @@ public function testItGetsParametersFromTheDsn()
     public function testOverrideOptionsViaQueryParameters()
     {
         $this->assertEquals(
-            new Connection(array(
+            new Connection([
                 'host' => 'redis',
                 'port' => 1234,
                 'vhost' => '/',
                 'login' => 'guest',
                 'password' => 'password',
-            ), array(
+            ], [
                 'name' => 'exchangeName',
-            ), array(
+            ], [
                 'name' => 'queue',
-            )),
+            ]),
             Connection::fromDsn('amqp://guest:password@redis:1234/%2f/queue?exchange[name]=exchangeName')
         );
     }
@@ -66,22 +66,22 @@ public function testOverrideOptionsViaQueryParameters()
     public function testOptionsAreTakenIntoAccountAndOverwrittenByDsn()
     {
         $this->assertEquals(
-            new Connection(array(
+            new Connection([
                 'host' => 'redis',
                 'port' => 1234,
                 'vhost' => '/',
                 'login' => 'guest',
                 'password' => 'password',
                 'persistent' => 'true',
-            ), array(
+            ], [
                 'name' => 'exchangeName',
-            ), array(
+            ], [
                 'name' => 'queueName',
-            )),
-            Connection::fromDsn('amqp://guest:password@redis:1234/%2f/queue?exchange[name]=exchangeName&queue[name]=queueName', array(
+            ]),
+            Connection::fromDsn('amqp://guest:password@redis:1234/%2f/queue?exchange[name]=exchangeName&queue[name]=queueName', [
                 'persistent' => 'true',
-                'exchange' => array('name' => 'toBeOverwritten'),
-            ))
+                'exchange' => ['name' => 'toBeOverwritten'],
+            ])
         );
     }
 
@@ -94,27 +94,27 @@ public function testSetsParametersOnTheQueueAndExchange()
             $amqpExchange = $this->getMockBuilder(\AMQPExchange::class)->disableOriginalConstructor()->getMock()
         );
 
-        $amqpQueue->expects($this->once())->method('setArguments')->with(array(
+        $amqpQueue->expects($this->once())->method('setArguments')->with([
             'x-dead-letter-exchange' => 'dead-exchange',
             'x-message-ttl' => '1200',
-        ));
+        ]);
 
-        $amqpExchange->expects($this->once())->method('setArguments')->with(array(
+        $amqpExchange->expects($this->once())->method('setArguments')->with([
             'alternate-exchange' => 'alternate',
-        ));
+        ]);
 
-        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[arguments][x-dead-letter-exchange]=dead-exchange', array(
-            'queue' => array(
-                'arguments' => array(
+        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[arguments][x-dead-letter-exchange]=dead-exchange', [
+            'queue' => [
+                'arguments' => [
                     'x-message-ttl' => '1200',
-                ),
-            ),
-            'exchange' => array(
-                'arguments' => array(
+                ],
+            ],
+            'exchange' => [
+                'arguments' => [
                     'alternate-exchange' => 'alternate',
-                ),
-            ),
-        ), true, $factory);
+                ],
+            ],
+        ], true, $factory);
         $connection->publish('body');
     }
 
@@ -129,7 +129,7 @@ public function testItUsesANormalConnectionByDefault()
 
         $amqpConnection->expects($this->once())->method('connect');
 
-        $connection = Connection::fromDsn('amqp://localhost/%2f/messages', array(), false, $factory);
+        $connection = Connection::fromDsn('amqp://localhost/%2f/messages', [], false, $factory);
         $connection->publish('body');
     }
 
@@ -144,7 +144,7 @@ public function testItAllowsToUseAPersistentConnection()
 
         $amqpConnection->expects($this->once())->method('pconnect');
 
-        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?persistent=true', array(), false, $factory);
+        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?persistent=true', [], false, $factory);
         $connection->publish('body');
     }
 
@@ -162,7 +162,7 @@ public function testItSetupsTheConnectionWhenDebug()
         $amqpQueue->expects($this->once())->method('declareQueue');
         $amqpQueue->expects($this->once())->method('bind')->with('exchange_name', 'my_key');
 
-        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[routing_key]=my_key', array(), true, $factory);
+        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[routing_key]=my_key', [], true, $factory);
         $connection->publish('body');
     }
 
@@ -180,13 +180,13 @@ public function testItCanDisableTheSetup()
         $amqpQueue->expects($this->never())->method('declareQueue');
         $amqpQueue->expects($this->never())->method('bind');
 
-        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[routing_key]=my_key', array('auto-setup' => 'false'), true, $factory);
+        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[routing_key]=my_key', ['auto-setup' => 'false'], true, $factory);
         $connection->publish('body');
 
-        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[routing_key]=my_key', array('auto-setup' => false), true, $factory);
+        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[routing_key]=my_key', ['auto-setup' => false], true, $factory);
         $connection->publish('body');
 
-        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[routing_key]=my_key&auto-setup=false', array(), true, $factory);
+        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[routing_key]=my_key&auto-setup=false', [], true, $factory);
         $connection->publish('body');
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/Fixtures/long_receiver.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/Fixtures/long_receiver.php
index b7231a5d47fa..0998b26d280c 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/Fixtures/long_receiver.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/Fixtures/long_receiver.php
@@ -22,7 +22,7 @@
 use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
 
 $serializer = new Serializer(
-    new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+    new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
 );
 
 $connection = Connection::fromDsn(getenv('DSN'));
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenMemoryUsageIsExceededReceiverTest.php b/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenMemoryUsageIsExceededReceiverTest.php
index a34be3bfc2ce..66559b1c3442 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenMemoryUsageIsExceededReceiverTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenMemoryUsageIsExceededReceiverTest.php
@@ -30,7 +30,7 @@ public function testReceiverStopsWhenMemoryLimitExceeded(int $memoryUsage, int $
         };
 
         $decoratedReceiver = $this->getMockBuilder(CallbackReceiver::class)
-            ->setConstructorArgs(array($callable))
+            ->setConstructorArgs([$callable])
             ->enableProxyingToOriginalMethods()
             ->getMock();
 
@@ -51,9 +51,9 @@ public function testReceiverStopsWhenMemoryLimitExceeded(int $memoryUsage, int $
 
     public function memoryProvider()
     {
-        yield array(2048, 1024, true);
-        yield array(1024, 1024, false);
-        yield array(1024, 2048, false);
+        yield [2048, 1024, true];
+        yield [1024, 1024, false];
+        yield [1024, 2048, false];
     }
 
     public function testReceiverLogsMemoryExceededWhenLoggerIsGiven()
@@ -63,7 +63,7 @@ public function testReceiverLogsMemoryExceededWhenLoggerIsGiven()
         };
 
         $decoratedReceiver = $this->getMockBuilder(CallbackReceiver::class)
-            ->setConstructorArgs(array($callable))
+            ->setConstructorArgs([$callable])
             ->enableProxyingToOriginalMethods()
             ->getMock();
 
@@ -72,7 +72,7 @@ public function testReceiverLogsMemoryExceededWhenLoggerIsGiven()
 
         $logger = $this->createMock(LoggerInterface::class);
         $logger->expects($this->once())->method('info')
-            ->with('Receiver stopped due to memory limit of {limit} exceeded', array('limit' => 64 * 1024 * 1024));
+            ->with('Receiver stopped due to memory limit of {limit} exceeded', ['limit' => 64 * 1024 * 1024]);
 
         $memoryResolver = function () {
             return 70 * 1024 * 1024;
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenMessageCountIsExceededReceiverTest.php b/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenMessageCountIsExceededReceiverTest.php
index e5c51335b3b8..274a60f37719 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenMessageCountIsExceededReceiverTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenMessageCountIsExceededReceiverTest.php
@@ -32,7 +32,7 @@ public function testReceiverStopsWhenMaximumCountExceeded($max, $shouldStop)
         };
 
         $decoratedReceiver = $this->getMockBuilder(CallbackReceiver::class)
-            ->setConstructorArgs(array($callable))
+            ->setConstructorArgs([$callable])
             ->enableProxyingToOriginalMethods()
             ->getMock();
 
@@ -49,10 +49,10 @@ public function testReceiverStopsWhenMaximumCountExceeded($max, $shouldStop)
 
     public function countProvider()
     {
-        yield array(1, true);
-        yield array(2, true);
-        yield array(3, true);
-        yield array(4, false);
+        yield [1, true];
+        yield [2, true];
+        yield [3, true];
+        yield [4, false];
     }
 
     public function testReceiverDoesntIncreaseItsCounterWhenReceiveNullMessage()
@@ -65,7 +65,7 @@ public function testReceiverDoesntIncreaseItsCounterWhenReceiveNullMessage()
         };
 
         $decoratedReceiver = $this->getMockBuilder(CallbackReceiver::class)
-            ->setConstructorArgs(array($callable))
+            ->setConstructorArgs([$callable])
             ->enableProxyingToOriginalMethods()
             ->getMock();
 
@@ -83,7 +83,7 @@ public function testReceiverLogsMaximumCountExceededWhenLoggerIsGiven()
         };
 
         $decoratedReceiver = $this->getMockBuilder(CallbackReceiver::class)
-            ->setConstructorArgs(array($callable))
+            ->setConstructorArgs([$callable])
             ->enableProxyingToOriginalMethods()
             ->getMock();
 
@@ -94,7 +94,7 @@ public function testReceiverLogsMaximumCountExceededWhenLoggerIsGiven()
         $logger->expects($this->once())->method('info')
             ->with(
                 $this->equalTo('Receiver stopped due to maximum count of {count} exceeded'),
-                $this->equalTo(array('count' => 1))
+                $this->equalTo(['count' => 1])
             );
 
         $maximumCountReceiver = new StopWhenMessageCountIsExceededReceiver($decoratedReceiver, 1, $logger);
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenTimeLimitIsReachedReceiverTest.php b/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenTimeLimitIsReachedReceiverTest.php
index 51119b36f56a..fd64b119aed4 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenTimeLimitIsReachedReceiverTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/Enhancers/StopWhenTimeLimitIsReachedReceiverTest.php
@@ -29,7 +29,7 @@ public function testReceiverStopsWhenTimeLimitIsReached()
         };
 
         $decoratedReceiver = $this->getMockBuilder(CallbackReceiver::class)
-            ->setConstructorArgs(array($callable))
+            ->setConstructorArgs([$callable])
             ->enableProxyingToOriginalMethods()
             ->getMock();
 
@@ -38,7 +38,7 @@ public function testReceiverStopsWhenTimeLimitIsReached()
 
         $logger = $this->createMock(LoggerInterface::class);
         $logger->expects($this->once())->method('info')
-            ->with('Receiver stopped due to time limit of {timeLimit}s reached', array('timeLimit' => 1));
+            ->with('Receiver stopped due to time limit of {timeLimit}s reached', ['timeLimit' => 1]);
 
         $timeoutReceiver = new StopWhenTimeLimitIsReachedReceiver($decoratedReceiver, 1, $logger);
         $timeoutReceiver->receive(function () {
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/Serialization/SerializerTest.php b/src/Symfony/Component/Messenger/Tests/Transport/Serialization/SerializerTest.php
index 214b773092e8..88306ad40885 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/Serialization/SerializerTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/Serialization/SerializerTest.php
@@ -26,7 +26,7 @@ class SerializerTest extends TestCase
     public function testEncodedIsDecodable()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $envelope = Envelope::wrap(new DummyMessage('Hello'));
@@ -37,12 +37,12 @@ public function testEncodedIsDecodable()
     public function testEncodedWithConfigurationIsDecodable()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $envelope = Envelope::wrap(new DummyMessage('Hello'))
-            ->with(new SerializerConfiguration(array(ObjectNormalizer::GROUPS => array('foo'))))
-            ->with(new ValidationConfiguration(array('foo', 'bar')))
+            ->with(new SerializerConfiguration([ObjectNormalizer::GROUPS => ['foo']]))
+            ->with(new ValidationConfiguration(['foo', 'bar']))
         ;
 
         $this->assertEquals($envelope, $serializer->decode($serializer->encode($envelope)));
@@ -51,7 +51,7 @@ public function testEncodedWithConfigurationIsDecodable()
     public function testEncodedIsHavingTheBodyAndTypeHeader()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $encoded = $serializer->encode(Envelope::wrap(new DummyMessage('Hello')));
@@ -68,10 +68,10 @@ public function testUsesTheCustomFormatAndContext()
         $message = new DummyMessage('Foo');
 
         $serializer = $this->getMockBuilder(SerializerComponent\SerializerInterface::class)->getMock();
-        $serializer->expects($this->once())->method('serialize')->with($message, 'csv', array('foo' => 'bar'))->willReturn('Yay');
-        $serializer->expects($this->once())->method('deserialize')->with('Yay', DummyMessage::class, 'csv', array('foo' => 'bar'))->willReturn($message);
+        $serializer->expects($this->once())->method('serialize')->with($message, 'csv', ['foo' => 'bar'])->willReturn('Yay');
+        $serializer->expects($this->once())->method('deserialize')->with('Yay', DummyMessage::class, 'csv', ['foo' => 'bar'])->willReturn($message);
 
-        $encoder = new Serializer($serializer, 'csv', array('foo' => 'bar'));
+        $encoder = new Serializer($serializer, 'csv', ['foo' => 'bar']);
 
         $encoded = $encoder->encode(Envelope::wrap($message));
         $decoded = $encoder->decode($encoded);
@@ -83,12 +83,12 @@ public function testUsesTheCustomFormatAndContext()
     public function testEncodedWithSerializationConfiguration()
     {
         $serializer = new Serializer(
-            new SerializerComponent\Serializer(array(new ObjectNormalizer()), array('json' => new JsonEncoder()))
+            new SerializerComponent\Serializer([new ObjectNormalizer()], ['json' => new JsonEncoder()])
         );
 
         $envelope = Envelope::wrap(new DummyMessage('Hello'))
-            ->with(new SerializerConfiguration(array(ObjectNormalizer::GROUPS => array('foo'))))
-            ->with(new ValidationConfiguration(array('foo', 'bar')))
+            ->with(new SerializerConfiguration([ObjectNormalizer::GROUPS => ['foo']]))
+            ->with(new ValidationConfiguration(['foo', 'bar']))
         ;
 
         $encoded = $serializer->encode($envelope);
diff --git a/src/Symfony/Component/Messenger/TraceableMessageBus.php b/src/Symfony/Component/Messenger/TraceableMessageBus.php
index b60d220b15ce..35f99020009d 100644
--- a/src/Symfony/Component/Messenger/TraceableMessageBus.php
+++ b/src/Symfony/Component/Messenger/TraceableMessageBus.php
@@ -17,7 +17,7 @@
 class TraceableMessageBus implements MessageBusInterface
 {
     private $decoratedBus;
-    private $dispatchedMessages = array();
+    private $dispatchedMessages = [];
 
     public function __construct(MessageBusInterface $decoratedBus)
     {
@@ -36,21 +36,21 @@ public function dispatch($message)
         try {
             $result = $this->decoratedBus->dispatch($message);
 
-            $this->dispatchedMessages[] = array(
+            $this->dispatchedMessages[] = [
                 'envelopeItems' => $envelopeItems,
                 'message' => $messageToTrace,
                 'result' => $result,
                 'callTime' => $callTime,
-            );
+            ];
 
             return $result;
         } catch (\Throwable $e) {
-            $this->dispatchedMessages[] = array(
+            $this->dispatchedMessages[] = [
                 'envelopeItems' => $envelopeItems,
                 'message' => $messageToTrace,
                 'exception' => $e,
                 'callTime' => $callTime,
-            );
+            ];
 
             throw $e;
         }
@@ -63,6 +63,6 @@ public function getDispatchedMessages(): array
 
     public function reset()
     {
-        $this->dispatchedMessages = array();
+        $this->dispatchedMessages = [];
     }
 }
diff --git a/src/Symfony/Component/Messenger/Transport/AmqpExt/AmqpReceiver.php b/src/Symfony/Component/Messenger/Transport/AmqpExt/AmqpReceiver.php
index 0e6fbff8ee34..b8d3b0f2c74e 100644
--- a/src/Symfony/Component/Messenger/Transport/AmqpExt/AmqpReceiver.php
+++ b/src/Symfony/Component/Messenger/Transport/AmqpExt/AmqpReceiver.php
@@ -51,10 +51,10 @@ public function receive(callable $handler): void
             }
 
             try {
-                $handler($this->decoder->decode(array(
+                $handler($this->decoder->decode([
                     'body' => $AMQPEnvelope->getBody(),
                     'headers' => $AMQPEnvelope->getHeaders(),
-                )));
+                ]));
 
                 $this->connection->ack($AMQPEnvelope);
             } catch (RejectMessageExceptionInterface $e) {
diff --git a/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php b/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
index 5be6f70723b5..c037d4aeabb9 100644
--- a/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
+++ b/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
@@ -48,24 +48,24 @@ public function __construct(array $connectionCredentials, array $exchangeConfigu
         $this->amqpFactory = $amqpFactory ?: new AmqpFactory();
     }
 
-    public static function fromDsn(string $dsn, array $options = array(), bool $debug = false, AmqpFactory $amqpFactory = null): self
+    public static function fromDsn(string $dsn, array $options = [], bool $debug = false, AmqpFactory $amqpFactory = null): self
     {
         if (false === $parsedUrl = parse_url($dsn)) {
             throw new \InvalidArgumentException(sprintf('The given AMQP DSN "%s" is invalid.', $dsn));
         }
 
-        $pathParts = isset($parsedUrl['path']) ? explode('/', trim($parsedUrl['path'], '/')) : array();
-        $amqpOptions = array_replace_recursive(array(
+        $pathParts = isset($parsedUrl['path']) ? explode('/', trim($parsedUrl['path'], '/')) : [];
+        $amqpOptions = array_replace_recursive([
             'host' => $parsedUrl['host'] ?? 'localhost',
             'port' => $parsedUrl['port'] ?? 5672,
             'vhost' => isset($pathParts[0]) ? urldecode($pathParts[0]) : '/',
-            'queue' => array(
+            'queue' => [
                 'name' => $queueName = $pathParts[1] ?? 'messages',
-            ),
-            'exchange' => array(
+            ],
+            'exchange' => [
                 'name' => $queueName,
-            ),
-        ), $options);
+            ],
+        ], $options);
 
         if (isset($parsedUrl['user'])) {
             $amqpOptions['login'] = $parsedUrl['user'];
@@ -92,13 +92,13 @@ public static function fromDsn(string $dsn, array $options = array(), bool $debu
     /**
      * @throws \AMQPException
      */
-    public function publish(string $body, array $headers = array()): void
+    public function publish(string $body, array $headers = []): void
     {
         if ($this->debug && $this->shouldSetup()) {
             $this->setup();
         }
 
-        $this->exchange()->publish($body, $this->queueConfiguration['routing_key'] ?? null, AMQP_NOPARAM, array('headers' => $headers));
+        $this->exchange()->publish($body, $this->queueConfiguration['routing_key'] ?? null, AMQP_NOPARAM, ['headers' => $headers]);
     }
 
     /**
@@ -218,6 +218,6 @@ private function clear(): void
 
     private function shouldSetup(): bool
     {
-        return !array_key_exists('auto-setup', $this->connectionCredentials) || !\in_array($this->connectionCredentials['auto-setup'], array(false, 'false'), true);
+        return !array_key_exists('auto-setup', $this->connectionCredentials) || !\in_array($this->connectionCredentials['auto-setup'], [false, 'false'], true);
     }
 }
diff --git a/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenMemoryUsageIsExceededReceiver.php b/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenMemoryUsageIsExceededReceiver.php
index 37b1978233e9..adf4f1cc59ce 100644
--- a/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenMemoryUsageIsExceededReceiver.php
+++ b/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenMemoryUsageIsExceededReceiver.php
@@ -44,7 +44,7 @@ public function receive(callable $handler): void
             if ($memoryResolver() > $this->memoryLimit) {
                 $this->stop();
                 if (null !== $this->logger) {
-                    $this->logger->info('Receiver stopped due to memory limit of {limit} exceeded', array('limit' => $this->memoryLimit));
+                    $this->logger->info('Receiver stopped due to memory limit of {limit} exceeded', ['limit' => $this->memoryLimit]);
                 }
             }
         });
diff --git a/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenMessageCountIsExceededReceiver.php b/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenMessageCountIsExceededReceiver.php
index 420eb8fa63a4..6a619bc9e9af 100644
--- a/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenMessageCountIsExceededReceiver.php
+++ b/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenMessageCountIsExceededReceiver.php
@@ -41,7 +41,7 @@ public function receive(callable $handler): void
             if (null !== $envelope && ++$receivedMessages >= $this->maximumNumberOfMessages) {
                 $this->stop();
                 if (null !== $this->logger) {
-                    $this->logger->info('Receiver stopped due to maximum count of {count} exceeded', array('count' => $this->maximumNumberOfMessages));
+                    $this->logger->info('Receiver stopped due to maximum count of {count} exceeded', ['count' => $this->maximumNumberOfMessages]);
                 }
             }
         });
diff --git a/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenTimeLimitIsReachedReceiver.php b/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenTimeLimitIsReachedReceiver.php
index b88a0cbd046c..c524f7057f4f 100644
--- a/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenTimeLimitIsReachedReceiver.php
+++ b/src/Symfony/Component/Messenger/Transport/Enhancers/StopWhenTimeLimitIsReachedReceiver.php
@@ -41,7 +41,7 @@ public function receive(callable $handler): void
             if ($endTime < time()) {
                 $this->stop();
                 if (null !== $this->logger) {
-                    $this->logger->info('Receiver stopped due to time limit of {timeLimit}s reached', array('timeLimit' => $this->timeLimitInSeconds));
+                    $this->logger->info('Receiver stopped due to time limit of {timeLimit}s reached', ['timeLimit' => $this->timeLimitInSeconds]);
                 }
             }
         });
diff --git a/src/Symfony/Component/Messenger/Transport/Serialization/Serializer.php b/src/Symfony/Component/Messenger/Transport/Serialization/Serializer.php
index cfb30090e5df..09280bf269f8 100644
--- a/src/Symfony/Component/Messenger/Transport/Serialization/Serializer.php
+++ b/src/Symfony/Component/Messenger/Transport/Serialization/Serializer.php
@@ -23,7 +23,7 @@ class Serializer implements DecoderInterface, EncoderInterface
     private $format;
     private $context;
 
-    public function __construct(SerializerInterface $serializer, string $format = 'json', array $context = array())
+    public function __construct(SerializerInterface $serializer, string $format = 'json', array $context = [])
     {
         $this->serializer = $serializer;
         $this->format = $format;
@@ -43,7 +43,7 @@ public function decode(array $encodedEnvelope): Envelope
             throw new \InvalidArgumentException('Encoded envelope does not have a `type` header.');
         }
 
-        $envelopeItems = isset($encodedEnvelope['headers']['X-Message-Envelope-Items']) ? unserialize($encodedEnvelope['headers']['X-Message-Envelope-Items']) : array();
+        $envelopeItems = isset($encodedEnvelope['headers']['X-Message-Envelope-Items']) ? unserialize($encodedEnvelope['headers']['X-Message-Envelope-Items']) : [];
 
         $context = $this->context;
         /** @var SerializerConfiguration|null $serializerConfig */
@@ -67,14 +67,14 @@ public function encode(Envelope $envelope): array
             $context = $serializerConfig->getContext() + $context;
         }
 
-        $headers = array('type' => \get_class($envelope->getMessage()));
+        $headers = ['type' => \get_class($envelope->getMessage())];
         if ($configurations = $envelope->all()) {
             $headers['X-Message-Envelope-Items'] = serialize($configurations);
         }
 
-        return array(
+        return [
             'body' => $this->serializer->serialize($envelope->getMessage(), $this->format, $context),
             'headers' => $headers,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Messenger/Transport/Serialization/SerializerConfiguration.php b/src/Symfony/Component/Messenger/Transport/Serialization/SerializerConfiguration.php
index 478e197080ad..d29f87f888ee 100644
--- a/src/Symfony/Component/Messenger/Transport/Serialization/SerializerConfiguration.php
+++ b/src/Symfony/Component/Messenger/Transport/Serialization/SerializerConfiguration.php
@@ -34,12 +34,12 @@ public function getContext(): array
 
     public function serialize()
     {
-        return serialize(array('context' => $this->context));
+        return serialize(['context' => $this->context]);
     }
 
     public function unserialize($serialized)
     {
-        list('context' => $context) = unserialize($serialized, array('allowed_classes' => false));
+        list('context' => $context) = unserialize($serialized, ['allowed_classes' => false]);
 
         $this->__construct($context);
     }
diff --git a/src/Symfony/Component/Process/PhpExecutableFinder.php b/src/Symfony/Component/Process/PhpExecutableFinder.php
index ee7203c9a7b8..768790e4d24e 100644
--- a/src/Symfony/Component/Process/PhpExecutableFinder.php
+++ b/src/Symfony/Component/Process/PhpExecutableFinder.php
@@ -47,7 +47,7 @@ public function find($includeArgs = true)
         $args = $includeArgs && $args ? ' '.implode(' ', $args) : '';
 
         // PHP_BINARY return the current sapi executable
-        if (PHP_BINARY && \in_array(\PHP_SAPI, array('cli', 'cli-server', 'phpdbg'), true)) {
+        if (PHP_BINARY && \in_array(\PHP_SAPI, ['cli', 'cli-server', 'phpdbg'], true)) {
             return PHP_BINARY.$args;
         }
 
@@ -69,7 +69,7 @@ public function find($includeArgs = true)
             return $php;
         }
 
-        $dirs = array(PHP_BINDIR);
+        $dirs = [PHP_BINDIR];
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dirs[] = 'C:\xampp\php\\';
         }
@@ -84,7 +84,7 @@ public function find($includeArgs = true)
      */
     public function findArguments()
     {
-        $arguments = array();
+        $arguments = [];
         if ('phpdbg' === \PHP_SAPI) {
             $arguments[] = '-qrr';
         }
diff --git a/src/Symfony/Component/Process/PhpProcess.php b/src/Symfony/Component/Process/PhpProcess.php
index 6cf02a2fca46..116b71f0b8e0 100644
--- a/src/Symfony/Component/Process/PhpProcess.php
+++ b/src/Symfony/Component/Process/PhpProcess.php
@@ -36,7 +36,7 @@ public function __construct(string $script, string $cwd = null, array $env = nul
         if (false === $php = $executableFinder->find(false)) {
             $php = null;
         } else {
-            $php = array_merge(array($php), $executableFinder->findArguments());
+            $php = array_merge([$php], $executableFinder->findArguments());
         }
         if ('phpdbg' === \PHP_SAPI) {
             $file = tempnam(sys_get_temp_dir(), 'dbg');
@@ -60,7 +60,7 @@ public function setPhpBinary($php)
     /**
      * {@inheritdoc}
      */
-    public function start(callable $callback = null, array $env = array())
+    public function start(callable $callback = null, array $env = [])
     {
         if (null === $this->getCommandLine()) {
             throw new RuntimeException('Unable to find the PHP executable.');
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index fee865e6ee1d..c229bac2f957 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -60,7 +60,7 @@ class Process implements \IteratorAggregate
     private $timeout;
     private $idleTimeout;
     private $exitcode;
-    private $fallbackStatus = array();
+    private $fallbackStatus = [];
     private $processInformation;
     private $outputDisabled = false;
     private $stdout;
@@ -85,7 +85,7 @@ class Process implements \IteratorAggregate
      *
      * User-defined errors must use exit codes in the 64-113 range.
      */
-    public static $exitCodes = array(
+    public static $exitCodes = [
         0 => 'OK',
         1 => 'General error',
         2 => 'Misuse of shell builtins',
@@ -126,7 +126,7 @@ class Process implements \IteratorAggregate
         157 => 'Pollable event',
         // 158 - not defined
         159 => 'Bad syscall',
-    );
+    ];
 
     /**
      * @param string|array   $commandline The command line to run
@@ -195,7 +195,7 @@ public function __clone()
      *
      * @final
      */
-    public function run(callable $callback = null, array $env = array()): int
+    public function run(callable $callback = null, array $env = []): int
     {
         $this->start($callback, $env);
 
@@ -217,7 +217,7 @@ public function run(callable $callback = null, array $env = array()): int
      *
      * @final
      */
-    public function mustRun(callable $callback = null, array $env = array())
+    public function mustRun(callable $callback = null, array $env = [])
     {
         if (0 !== $this->run($callback, $env)) {
             throw new ProcessFailedException($this);
@@ -246,7 +246,7 @@ public function mustRun(callable $callback = null, array $env = array())
      * @throws RuntimeException When process is already running
      * @throws LogicException   In case a callback is provided and output has been disabled
      */
-    public function start(callable $callback = null, array $env = array())
+    public function start(callable $callback = null, array $env = [])
     {
         if ($this->isRunning()) {
             throw new RuntimeException('Process is already running');
@@ -259,7 +259,7 @@ public function start(callable $callback = null, array $env = array())
         $descriptors = $this->getDescriptors();
 
         if (\is_array($commandline = $this->commandline)) {
-            $commandline = implode(' ', array_map(array($this, 'escapeArgument'), $commandline));
+            $commandline = implode(' ', array_map([$this, 'escapeArgument'], $commandline));
 
             if ('\\' !== \DIRECTORY_SEPARATOR) {
                 // exec is mandatory to deal with sending a signal to the process
@@ -272,14 +272,14 @@ public function start(callable $callback = null, array $env = array())
         }
         $env += $this->getDefaultEnv();
 
-        $options = array('suppress_errors' => true);
+        $options = ['suppress_errors' => true];
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $options['bypass_shell'] = true;
             $commandline = $this->prepareWindowsCommandLine($commandline, $env);
         } elseif (!$this->useFileHandles && $this->isSigchildEnabled()) {
             // last exit code is output on the fourth pipe and caught to work around --enable-sigchild
-            $descriptors[3] = array('pipe', 'w');
+            $descriptors[3] = ['pipe', 'w'];
 
             // See https://unix.stackexchange.com/questions/71205/background-process-pipe-input
             $commandline = '{ ('.$commandline.') <&3 3<&- 3>/dev/null & } 3<&0;';
@@ -290,7 +290,7 @@ public function start(callable $callback = null, array $env = array())
             $ptsWorkaround = fopen(__FILE__, 'r');
         }
 
-        $envPairs = array();
+        $envPairs = [];
         foreach ($env as $k => $v) {
             if (false !== $v) {
                 $envPairs[] = $k.'='.$v;
@@ -338,7 +338,7 @@ public function start(callable $callback = null, array $env = array())
      *
      * @final
      */
-    public function restart(callable $callback = null, array $env = array())
+    public function restart(callable $callback = null, array $env = [])
     {
         if ($this->isRunning()) {
             throw new RuntimeException('Process is already running');
@@ -883,7 +883,7 @@ public function addErrorOutput(string $line)
      */
     public function getCommandLine()
     {
-        return \is_array($this->commandline) ? implode(' ', array_map(array($this, 'escapeArgument'), $this->commandline)) : $this->commandline;
+        return \is_array($this->commandline) ? implode(' ', array_map([$this, 'escapeArgument'], $this->commandline)) : $this->commandline;
     }
 
     /**
@@ -1169,7 +1169,7 @@ public static function isTtySupported(): bool
         static $isTtySupported;
 
         if (null === $isTtySupported) {
-            $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', array(array('file', '/dev/tty', 'r'), array('file', '/dev/tty', 'w'), array('file', '/dev/tty', 'w')), $pipes);
+            $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
         }
 
         return $isTtySupported;
@@ -1192,7 +1192,7 @@ public static function isPtySupported()
             return $result = false;
         }
 
-        return $result = (bool) @proc_open('echo 1 >/dev/null', array(array('pty'), array('pty'), array('pty')), $pipes);
+        return $result = (bool) @proc_open('echo 1 >/dev/null', [['pty'], ['pty'], ['pty']], $pipes);
     }
 
     /**
@@ -1390,7 +1390,7 @@ private function resetProcessData()
         $this->starttime = null;
         $this->callback = null;
         $this->exitcode = null;
-        $this->fallbackStatus = array();
+        $this->fallbackStatus = [];
         $this->processInformation = null;
         $this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b');
         $this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b');
@@ -1437,7 +1437,7 @@ private function doSignal(int $signal, bool $throwException): bool
                 $ok = @proc_terminate($this->process, $signal);
             } elseif (\function_exists('posix_kill')) {
                 $ok = @posix_kill($pid, $signal);
-            } elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), array(2 => array('pipe', 'w')), $pipes)) {
+            } elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), [2 => ['pipe', 'w']], $pipes)) {
                 $ok = false === fgets($pipes[2]);
             }
             if (!$ok) {
@@ -1461,7 +1461,7 @@ private function prepareWindowsCommandLine(string $cmd, array &$env)
     {
         $uid = uniqid('', true);
         $varCount = 0;
-        $varCache = array();
+        $varCache = [];
         $cmd = preg_replace_callback(
             '/"(?:(
                 [^"%!^]*+
@@ -1484,7 +1484,7 @@ function ($m) use (&$env, &$varCache, &$varCount, $uid) {
                     return '"'.$value.'"';
                 }
 
-                $value = str_replace(array('!LF!', '"^!"', '"^%"', '"^^"', '""'), array("\n", '!', '%', '^', '"'), $value);
+                $value = str_replace(['!LF!', '"^!"', '"^%"', '"^^"', '""'], ["\n", '!', '%', '^', '"'], $value);
                 $value = '"'.preg_replace('/(\\\\*)"/', '$1$1\\"', $value).'"';
                 $var = $uid.++$varCount;
 
@@ -1546,12 +1546,12 @@ private function escapeArgument(?string $argument): string
         }
         $argument = preg_replace('/(\\\\+)$/', '$1$1', $argument);
 
-        return '"'.str_replace(array('"', '^', '%', '!', "\n"), array('""', '"^^"', '"^%"', '"^!"', '!LF!'), $argument).'"';
+        return '"'.str_replace(['"', '^', '%', '!', "\n"], ['""', '"^^"', '"^%"', '"^!"', '!LF!'], $argument).'"';
     }
 
     private function getDefaultEnv()
     {
-        $env = arr
10000
ay();
+        $env = [];
 
         foreach ($_SERVER as $k => $v) {
             if (\is_string($v) && false !== $v = getenv($k)) {
diff --git a/src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php b/src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php
index df2560dfc58b..338bb4e0c6eb 100644
--- a/src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php
+++ b/src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php
@@ -41,9 +41,9 @@ public function testFindArguments()
         $f = new PhpExecutableFinder();
 
         if ('phpdbg' === \PHP_SAPI) {
-            $this->assertEquals($f->findArguments(), array('-qrr'), '::findArguments() returns phpdbg arguments');
+            $this->assertEquals($f->findArguments(), ['-qrr'], '::findArguments() returns phpdbg arguments');
         } else {
-            $this->assertEquals($f->findArguments(), array(), '::findArguments() returns no arguments');
+            $this->assertEquals($f->findArguments(), [], '::findArguments() returns no arguments');
         }
     }
 }
diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
index 9d705cfe509d..3db2734c1c5a 100644
--- a/src/Symfony/Component/Process/Tests/ProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -114,7 +114,7 @@ public function testFloatAndNullTimeout()
      */
     public function testStopWithTimeoutIsActuallyWorking()
     {
-        $p = $this->getProcess(array(self::$phpBin, __DIR__.'/NonStopableProcess.php', 30));
+        $p = $this->getProcess([self::$phpBin, __DIR__.'/NonStopableProcess.php', 30]);
         $p->start();
 
         while ($p->isRunning() && false === strpos($p->getOutput(), 'received')) {
@@ -280,10 +280,10 @@ public function testInvalidInput($value)
 
     public function provideInvalidInputValues()
     {
-        return array(
-            array(array()),
-            array(new NonStringifiable()),
-        );
+        return [
+            [[]],
+            [new NonStringifiable()],
+        ];
     }
 
     /**
@@ -298,25 +298,25 @@ public function testValidInput($expected, $value)
 
     public function provideInputValues()
     {
-        return array(
-            array(null, null),
-            array('24.5', 24.5),
-            array('input data', 'input data'),
-        );
+        return [
+            [null, null],
+            ['24.5', 24.5],
+            ['input data', 'input data'],
+        ];
     }
 
     public function chainedCommandsOutputProvider()
     {
         if ('\\' === \DIRECTORY_SEPARATOR) {
-            return array(
-                array("2 \r\n2\r\n", '&&', '2'),
-            );
+            return [
+                ["2 \r\n2\r\n", '&&', '2'],
+            ];
         }
 
-        return array(
-            array("1\n1\n", ';', '1'),
-            array("2\n2\n", '&&', '2'),
-        );
+        return [
+            ["1\n1\n", ';', '1'],
+            ["2\n2\n", '&&', '2'],
+        ];
     }
 
     /**
@@ -385,7 +385,7 @@ public function testIncrementalOutput($getOutput, $getIncrementalOutput, $uri)
 
         $p->start();
 
-        foreach (array('foo', 'bar') as $s) {
+        foreach (['foo', 'bar'] as $s) {
             while (false === strpos($p->$getOutput(), $s)) {
                 usleep(1000);
             }
@@ -401,10 +401,10 @@ public function testIncrementalOutput($getOutput, $getIncrementalOutput, $uri)
 
     public function provideIncrementalOutput()
     {
-        return array(
-            array('getOutput', 'getIncrementalOutput', 'php://stdout'),
-            array('getErrorOutput', 'getIncrementalErrorOutput', 'php://stderr'),
-        );
+        return [
+            ['getOutput', 'getIncrementalOutput', 'php://stdout'],
+            ['getErrorOutput', 'getIncrementalErrorOutput', 'php://stderr'],
+        ];
     }
 
     public function testGetOutput()
@@ -887,7 +887,7 @@ public function testGetPidIsNullAfterRun()
      */
     public function testSignal()
     {
-        $process = $this->getProcess(array(self::$phpBin, __DIR__.'/SignalListener.php'));
+        $process = $this->getProcess([self::$phpBin, __DIR__.'/SignalListener.php']);
         $process->start();
 
         while (false === strpos($process->getOutput(), 'Caught')) {
@@ -947,13 +947,13 @@ public function testMethodsThatNeedARunningProcess($method)
 
     public function provideMethodsThatNeedARunningProcess()
     {
-        return array(
-            array('getOutput'),
-            array('getIncrementalOutput'),
-            array('getErrorOutput'),
-            array('getIncrementalErrorOutput'),
-            array('wait'),
-        );
+        return [
+            ['getOutput'],
+            ['getIncrementalOutput'],
+            ['getErrorOutput'],
+            ['getIncrementalErrorOutput'],
+            ['wait'],
+        ];
     }
 
     /**
@@ -978,12 +978,12 @@ public function testMethodsThatNeedATerminatedProcess($method)
 
     public function provideMethodsThatNeedATerminatedProcess()
     {
-        return array(
-            array('hasBeenSignaled'),
-            array('getTermSignal'),
-            array('hasBeenStopped'),
-            array('getStopSignal'),
-        );
+        return [
+            ['hasBeenSignaled'],
+            ['getTermSignal'],
+            ['hasBeenStopped'],
+            ['getStopSignal'],
+        ];
     }
 
     /**
@@ -1094,12 +1094,12 @@ public function testGetOutputWhileDisabled($fetchMethod)
 
     public function provideOutputFetchingMethods()
     {
-        return array(
-            array('getOutput'),
-            array('getIncrementalOutput'),
-            array('getErrorOutput'),
-            array('getIncrementalErrorOutput'),
-        );
+        return [
+            ['getOutput'],
+            ['getIncrementalOutput'],
+            ['getErrorOutput'],
+            ['getIncrementalErrorOutput'],
+        ];
     }
 
     public function testStopTerminatesProcessCleanly()
@@ -1131,32 +1131,32 @@ public function testTermSignalTerminatesProcessCleanly()
 
     public function responsesCodeProvider()
     {
-        return array(
+        return [
             //expected output / getter / code to execute
             //array(1,'getExitCode','exit(1);'),
             //array(true,'isSuccessful','exit();'),
-            array('output', 'getOutput', 'echo \'output\';'),
-        );
+            ['output', 'getOutput', 'echo \'output\';'],
+        ];
     }
 
     public function pipesCodeProvider()
     {
-        $variations = array(
+        $variations = [
             'fwrite(STDOUT, $in = file_get_contents(\'php://stdin\')); fwrite(STDERR, $in);',
             'include \''.__DIR__.'/PipeStdinInStdoutStdErrStreamSelect.php\';',
-        );
+        ];
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
             // Avoid XL buffers on Windows because of https://bugs.php.net/bug.php?id=65650
-            $sizes = array(1, 2, 4, 8);
+            $sizes = [1, 2, 4, 8];
         } else {
-            $sizes = array(1, 16, 64, 1024, 4096);
+            $sizes = [1, 16, 64, 1024, 4096];
         }
 
-        $codes = array();
+        $codes = [];
         foreach ($sizes as $size) {
             foreach ($variations as $code) {
-                $codes[] = array($code, $size);
+                $codes[] = [$code, $size];
             }
         }
 
@@ -1184,10 +1184,10 @@ public function testIncrementalOutputDoesNotRequireAnotherCall($stream, $method)
 
     public function provideVariousIncrementals()
     {
-        return array(
-            array('php://stdout', 'getIncrementalOutput'),
-            array('php://stderr', 'getIncrementalErrorOutput'),
-        );
+        return [
+            ['php://stdout', 'getIncrementalOutput'],
+            ['php://stderr', 'getIncrementalErrorOutput'],
+        ];
     }
 
     public function testIteratorInput()
@@ -1292,32 +1292,32 @@ public function testIteratorOutput()
         $process = $this->getProcessForCode('fwrite(STDOUT, 123); fwrite(STDERR, 234); flush(); usleep(10000); fwrite(STDOUT, fread(STDIN, 3)); fwrite(STDERR, 456);');
         $process->setInput($input);
         $process->start();
-        $output = array();
+        $output = [];
 
         foreach ($process as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
             break;
         }
-        $expectedOutput = array(
-            array($process::OUT, '123'),
-        );
+        $expectedOutput = [
+            [$process::OUT, '123'],
+        ];
         $this->assertSame($expectedOutput, $output);
 
         $input->write(345);
 
         foreach ($process as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
         }
 
         $this->assertSame('', $process->getOutput());
         $this->assertFalse($process->isRunning());
 
-        $expectedOutput = array(
-            array($process::OUT, '123'),
-            array($process::ERR, '234'),
-            array($process::OUT, '345'),
-            array($process::ERR, '456'),
-        );
+        $expectedOutput = [
+            [$process::OUT, '123'],
+            [$process::ERR, '234'],
+            [$process::OUT, '345'],
+            [$process::ERR, '456'],
+        ];
         $this->assertSame($expectedOutput, $output);
     }
 
@@ -1328,32 +1328,32 @@ public function testNonBlockingNorClearingIteratorOutput()
         $process = $this->getProcessForCode('fwrite(STDOUT, fread(STDIN, 3));');
         $process->setInput($input);
         $process->start();
-        $output = array();
+        $output = [];
 
         foreach ($process->getIterator($process::ITER_NON_BLOCKING | $process::ITER_KEEP_OUTPUT) as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
             break;
         }
-        $expectedOutput = array(
-            array($process::OUT, ''),
-        );
+        $expectedOutput = [
+            [$process::OUT, ''],
+        ];
         $this->assertSame($expectedOutput, $output);
 
         $input->write(123);
 
         foreach ($process->getIterator($process::ITER_NON_BLOCKING | $process::ITER_KEEP_OUTPUT) as $type => $data) {
             if ('' !== $data) {
-                $output[] = array($type, $data);
+                $output[] = [$type, $data];
             }
         }
 
         $this->assertSame('123', $process->getOutput());
         $this->assertFalse($process->isRunning());
 
-        $expectedOutput = array(
-            array($process::OUT, ''),
-            array($process::OUT, '123'),
-        );
+        $expectedOutput = [
+            [$process::OUT, ''],
+            [$process::OUT, '123'],
+        ];
         $this->assertSame($expectedOutput, $output);
     }
 
@@ -1375,7 +1375,7 @@ public function testChainedProcesses()
     public function testSetBadEnv()
     {
         $process = $this->getProcess('echo hello');
-        $process->setEnv(array('bad%%' => '123'));
+        $process->setEnv(['bad%%' => '123']);
         $process->inheritEnvironmentVariables(true);
 
         $process->run();
@@ -1389,7 +1389,7 @@ public function testEnvBackupDoesNotDeleteExistingVars()
         putenv('existing_var=foo');
         $_ENV['existing_var'] = 'foo';
         $process = $this->getProcess('php -r "echo getenv(\'new_test_var\');"');
-        $process->setEnv(array('existing_var' => 'bar', 'new_test_var' => 'foo'));
+        $process->setEnv(['existing_var' => 'bar', 'new_test_var' => 'foo']);
         $process->inheritEnvironmentVariables();
 
         $process->run();
@@ -1404,14 +1404,14 @@ public function testEnvBackupDoesNotDeleteExistingVars()
 
     public function testEnvIsInherited()
     {
-        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, array('BAR' => 'BAZ', 'EMPTY' => ''));
+        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, ['BAR' => 'BAZ', 'EMPTY' => '']);
 
         putenv('FOO=BAR');
         $_ENV['FOO'] = 'BAR';
 
         $process->run();
 
-        $expected = array('BAR' => 'BAZ', 'EMPTY' => '', 'FOO' => 'BAR');
+        $expected = ['BAR' => 'BAZ', 'EMPTY' => '', 'FOO' => 'BAR'];
         $env = array_intersect_key(unserialize($process->getOutput()), $expected);
 
         $this->assertEquals($expected, $env);
@@ -1422,7 +1422,7 @@ public function testEnvIsInherited()
 
     public function testGetCommandLine()
     {
-        $p = new Process(array('/usr/bin/php'));
+        $p = new Process(['/usr/bin/php']);
 
         $expected = '\\' === \DIRECTORY_SEPARATOR ? '"/usr/bin/php"' : "'/usr/bin/php'";
         $this->assertSame($expected, $p->getCommandLine());
@@ -1433,7 +1433,7 @@ public function testGetCommandLine()
      */
     public function testEscapeArgument($arg)
     {
-        $p = new Process(array(self::$phpBin, '-r', 'echo $argv[1];', $arg));
+        $p = new Process([self::$phpBin, '-r', 'echo $argv[1];', $arg]);
         $p->run();
 
         $this->assertSame((string) $arg, $p->getOutput());
@@ -1459,24 +1459,24 @@ public function testRawCommandLine()
 
     public function provideEscapeArgument()
     {
-        yield array('a"b%c%');
-        yield array('a"b^c^');
-        yield array("a\nb'c");
-        yield array('a^b c!');
-        yield array("a!b\tc");
-        yield array('a\\\\"\\"');
-        yield array('éÉèÈàÀöä');
-        yield array(null);
-        yield array(1);
-        yield array(1.1);
+        yield ['a"b%c%'];
+        yield ['a"b^c^'];
+        yield ["a\nb'c"];
+        yield ['a^b c!'];
+        yield ["a!b\tc"];
+        yield ['a\\\\"\\"'];
+        yield ['éÉèÈàÀöä'];
+        yield [null];
+        yield [1];
+        yield [1.1];
     }
 
     public function testEnvArgument()
     {
-        $env = array('FOO' => 'Foo', 'BAR' => 'Bar');
+        $env = ['FOO' => 'Foo', 'BAR' => 'Bar'];
         $cmd = '\\' === \DIRECTORY_SEPARATOR ? 'echo !FOO! !BAR! !BAZ!' : 'echo $FOO $BAR $BAZ';
         $p = new Process($cmd, null, $env);
-        $p->run(null, array('BAR' => 'baR', 'BAZ' => 'baZ'));
+        $p->run(null, ['BAR' => 'baR', 'BAZ' => 'baZ']);
 
         $this->assertSame('Foo baR baZ', rtrim($p->getOutput()));
         $this->assertSame($env, $p->getEnv());
@@ -1509,7 +1509,7 @@ private function getProcess($commandline, $cwd = null, array $env = null, $input
      */
     private function getProcessForCode($code, $cwd = null, array $env = null, $input = null, $timeout = 60)
     {
-        return $this->getProcess(array(self::$phpBin, '-r', $code), $cwd, $env, $input, $timeout);
+        return $this->getProcess([self::$phpBin, '-r', $code], $cwd, $env, $input, $timeout);
     }
 }
 
diff --git a/src/Symfony/Component/PropertyAccess/PropertyAccessor.php b/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
index ad44cd5e4519..f47e7abbd255 100644
--- a/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
+++ b/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
@@ -62,9 +62,9 @@ class PropertyAccessor implements PropertyAccessorInterface
      */
     private $cacheItemPool;
 
-    private $readPropertyCache = array();
-    private $writePropertyCache = array();
-    private static $resultProto = array(self::VALUE => null);
+    private $readPropertyCache = [];
+    private $writePropertyCache = [];
+    private static $resultProto = [self::VALUE => null];
 
     /**
      * Should not be used by application code. Use
@@ -84,9 +84,9 @@ public function getValue($objectOrArray, $propertyPath)
     {
         $propertyPath = $this->getPropertyPath($propertyPath);
 
-        $zval = array(
+        $zval = [
             self::VALUE => $objectOrArray,
-        );
+        ];
         $propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength(), $this->ignoreInvalidIndices);
 
         return $propertyValues[\count($propertyValues) - 1][self::VALUE];
@@ -99,10 +99,10 @@ public function setValue(&$objectOrArray, $propertyPath, $value)
     {
         $propertyPath = $this->getPropertyPath($propertyPath);
 
-        $zval = array(
+        $zval = [
             self::VALUE => $objectOrArray,
             self::REF => &$objectOrArray,
-        );
+        ];
         $propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength() - 1);
         $overwrite = true;
 
@@ -184,9 +184,9 @@ public function isReadable($objectOrArray, $propertyPath)
         }
 
         try {
-            $zval = array(
+            $zval = [
                 self::VALUE => $objectOrArray,
-            );
+            ];
             $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength(), $this->ignoreInvalidIndices);
 
             return true;
@@ -205,9 +205,9 @@ public function isWritable($objectOrArray, $propertyPath)
         $propertyPath = $this->getPropertyPath($propertyPath);
 
         try {
-            $zval = array(
+            $zval = [
                 self::VALUE => $objectOrArray,
-            );
+            ];
             $propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength() - 1);
 
             for ($i = \count($propertyValues) - 1; 0 <= $i; --$i) {
@@ -257,7 +257,7 @@ private function readPropertiesUntil($zval, PropertyPathInterface $propertyPath,
         }
 
         // Add the root object to the list
-        $propertyValues = array($zval);
+        $propertyValues = [$zval];
 
         for ($i = 0; $i < $lastIndex; ++$i) {
             $property = $propertyPath->getElement($i);
@@ -282,10 +282,10 @@ private function readPropertiesUntil($zval, PropertyPathInterface $propertyPath,
 
                     if ($i + 1 < $propertyPath->getLength()) {
                         if (isset($zval[self::REF])) {
-                            $zval[self::VALUE][$property] = array();
+                            $zval[self::VALUE][$property] = [];
                             $zval[self::REF] = $zval[self::VALUE];
                         } else {
-                            $zval[self::VALUE] = array($property => array());
+                            $zval[self::VALUE] = [$property => []];
                         }
                     }
                 }
@@ -425,7 +425,7 @@ private function getReadAccessInfo($class, $property)
             }
         }
 
-        $access = array();
+        $access = [];
 
         $reflClass = new \ReflectionClass($class);
         $access[self::ACCESS_HAS_PROPERTY] = $reflClass->hasProperty($property);
@@ -460,7 +460,7 @@ private function getReadAccessInfo($class, $property)
             $access[self::ACCESS_TYPE] = self::ACCESS_TYPE_MAGIC;
             $access[self::ACCESS_NAME] = $getter;
         } else {
-            $methods = array($getter, $getsetter, $isser, $hasser, '__get');
+            $methods = [$getter, $getsetter, $isser, $hasser, '__get'];
             if ($this->magicCall) {
                 $methods[] = '__call';
             }
@@ -601,7 +601,7 @@ private function getWriteAccessInfo(string $class, string $property, $value): ar
             }
         }
 
-        $access = array();
+        $access = [];
 
         $reflClass = new \ReflectionClass($class);
         $access[self::ACCESS_HAS_PROPERTY] = $reflClass->hasProperty($property);
@@ -683,7 +683,7 @@ private function isPropertyWritable($object, string $property): bool
             return false;
         }
 
-        $access = $this->getWriteAccessInfo(\get_class($object), $property, array());
+        $access = $this->getWriteAccessInfo(\get_class($object), $property, []);
 
         $isWritable = self::ACCESS_TYPE_METHOD === $access[self::ACCESS_TYPE]
             || self::ACCESS_TYPE_PROPERTY === $access[self::ACCESS_TYPE]
@@ -730,7 +730,7 @@ private function findAdderAndRemover(\ReflectionClass $reflClass, array $singula
             $removeMethodFound = $this->isMethodAccessible($reflClass, $removeMethod, 1);
 
             if ($addMethodFound && $removeMethodFound) {
-                return array($addMethod, $removeMethod);
+                return [$addMethod, $removeMethod];
             }
         }
     }
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
index da106645c3d3..421a3fff995d 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
@@ -29,17 +29,17 @@ class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTyp
     /**
      * @internal
      */
-    public static $defaultMutatorPrefixes = array('add', 'remove', 'set');
+    public static $defaultMutatorPrefixes = ['add', 'remove', 'set'];
 
     /**
      * @internal
      */
-    public static $defaultAccessorPrefixes = array('is', 'can', 'get', 'has');
+    public static $defaultAccessorPrefixes = ['is', 'can', 'get', 'has'];
 
     /**
      * @internal
      */
-    public static $defaultArrayMutatorPrefixes = array('add', 'remove');
+    public static $defaultArrayMutatorPrefixes = ['add', 'remove'];
 
     private $mutatorPrefixes;
     private $accessorPrefixes;
@@ -62,7 +62,7 @@ public function __construct(array $mutatorPrefixes = null, array $accessorPrefix
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
         try {
             $reflectionClass = new \ReflectionClass($class);
@@ -72,7 +72,7 @@ public function getProperties($class, array $context = array())
 
         $reflectionProperties = $reflectionClass->getProperties();
 
-        $properties = array();
+        $properties = [];
         foreach ($reflectionProperties as $reflectionProperty) {
             if ($reflectionProperty->isPublic()) {
                 $properties[$reflectionProperty->name] = $reflectionProperty->name;
@@ -100,7 +100,7 @@ public function getProperties($class, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
         if ($fromMutator = $this->extractFromMutator($class, $property)) {
             return $fromMutator;
@@ -121,7 +121,7 @@ public function getTypes($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
         if ($this->isPublicProperty($class, $property)) {
             return true;
@@ -135,7 +135,7 @@ public function isReadable($class, $property, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
         if ($this->isPublicProperty($class, $property)) {
             return true;
@@ -168,7 +168,7 @@ private function extractFromMutator(string $class, string $property): ?array
             $type = new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), $type);
         }
 
-        return array($type);
+        return [$type];
     }
 
     /**
@@ -184,11 +184,11 @@ private function extractFromAccessor(string $class, string $property): ?array
         }
 
         if ($reflectionType = $reflectionMethod->getReturnType()) {
-            return array($this->extractFromReflectionType($reflectionType, $reflectionMethod));
+            return [$this->extractFromReflectionType($reflectionType, $reflectionMethod)];
         }
 
-        if (\in_array($prefix, array('is', 'can', 'has'))) {
-            return array(new Type(Type::BUILTIN_TYPE_BOOL));
+        if (\in_array($prefix, ['is', 'can', 'has'])) {
+            return [new Type(Type::BUILTIN_TYPE_BOOL)];
         }
 
         return null;
@@ -219,7 +219,7 @@ private function extractFromConstructor(string $class, string $property): ?array
             }
             $reflectionType = $parameter->getType();
 
-            return $reflectionType ? array($this->extractFromReflectionType($reflectionType, $constructor)) : null;
+            return $reflectionType ? [$this->extractFromReflectionType($reflectionType, $constructor)] : null;
         }
 
         if ($parentClass = $reflectionClass->getParentClass()) {
@@ -290,7 +290,7 @@ private function getAccessorMethod(string $class, string $property): ?array
                 }
 
                 if (0 === $reflectionMethod->getNumberOfRequiredParameters()) {
-                    return array($reflectionMethod, $prefix);
+                    return [$reflectionMethod, $prefix];
                 }
             } catch (\ReflectionException $e) {
                 // Return null if the property doesn't exist
@@ -310,7 +310,7 @@ private function getMutatorMethod(string $class, string $property): ?array
         $ucSingulars = (array) Inflector::singularize($ucProperty);
 
         foreach ($this->mutatorPrefixes as $prefix) {
-            $names = array($ucProperty);
+            $names = [$ucProperty];
             if (\in_array($prefix, $this->arrayMutatorPrefixes)) {
                 $names = array_merge($names, $ucSingulars);
             }
@@ -324,7 +324,7 @@ private function getMutatorMethod(string $class, string $property): ?array
 
                     // Parameter can be optional to allow things like: method(array $foo = null)
                     if ($reflectionMethod->getNumberOfParameters() >= 1) {
-                        return array($reflectionMethod, $prefix);
+                        return [$reflectionMethod, $prefix];
                     }
                 } catch (\ReflectionException $e) {
                     // Try the next prefix if the method doesn't exist
diff --git a/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php b/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
index 4baa7440f995..e742e61954f7 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
@@ -31,7 +31,7 @@ class PropertyInfoExtractor implements PropertyInfoExtractorInterface
      * @param iterable|PropertyDescriptionExtractorInterface[] $descriptionExtractors
      * @param iterable|PropertyAccessExtractorInterface[]      $accessExtractors
      */
-    public function __construct(iterable $listExtractors = array(), iterable $typeExtractors = array(), iterable $descriptionExtractors = array(), iterable $accessExtractors = array())
+    public function __construct(iterable $listExtractors = [], iterable $typeExtractors = [], iterable $descriptionExtractors = [], iterable $accessExtractors = [])
     {
         $this->listExtractors = $listExtractors;
         $this->typeExtractors = $typeExtractors;
@@ -42,49 +42,49 @@ public function __construct(iterable $listExtractors = array(), iterable $typeEx
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
-        return $this->extract($this->listExtractors, 'getProperties', array($class, $context));
+        return $this->extract($this->listExtractors, 'getProperties', [$class, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getShortDescription($class, $property, array $context = array())
+    public function getShortDescription($class, $property, array $context = [])
     {
-        return $this->extract($this->descriptionExtractors, 'getShortDescription', array($class, $property, $context));
+        return $this->extract($this->descriptionExtractors, 'getShortDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getLongDescription($class, $property, array $context = array())
+    public function getLongDescription($class, $property, array $context = [])
     {
-        return $this->extract($this->descriptionExtractors, 'getLongDescription', array($class, $property, $context));
+        return $this->extract($this->descriptionExtractors, 'getLongDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
-        return $this->extract($this->typeExtractors, 'getTypes', array($class, $property, $context));
+        return $this->extract($this->typeExtractors, 'getTypes', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
-        return $this->extract($this->accessExtractors, 'isReadable', array($class, $property, $context));
+        return $this->extract($this->accessExtractors, 'isReadable', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
-        return $this->extract($this->accessExtractors, 'isWritable', array($class, $property, $context));
+        return $this->extract($this->accessExtractors, 'isWritable', [$class, $property, $context]);
     }
 
     /**
@@ -95,7 +95,7 @@ public function isWritable($class, $property, array $context = array())
     private function extract(iterable $extractors, string $method, array $arguments)
     {
         foreach ($extractors as $extractor) {
-            $value = \call_user_func_array(array($extractor, $method), $arguments);
+            $value = \call_user_func_array([$extractor, $method], $arguments);
             if (null !== $value) {
                 return $value;
             }
diff --git a/src/Symfony/Component/Routing/Annotation/Route.php b/src/Symfony/Component/Routing/Annotation/Route.php
index 73d21b2f6cc7..f9e1ddcae0bb 100644
--- a/src/Symfony/Component/Routing/Annotation/Route.php
+++ b/src/Symfony/Component/Routing/Annotation/Route.php
@@ -22,7 +22,7 @@
 class Route
 {
     private $path;
-    private $localizedPaths = array();
+    private $localizedPaths = [];
     private $name;
     private $requirements = [];
     private $options = [];
diff --git a/src/Symfony/Component/Routing/CompiledRoute.php b/src/Symfony/Component/Routing/CompiledRoute.php
index 44484c0e6ebd..8db812b075f6 100644
--- a/src/Symfony/Component/Routing/CompiledRoute.php
+++ b/src/Symfony/Component/Routing/CompiledRoute.php
@@ -37,7 +37,7 @@ class CompiledRoute implements \Serializable
      * @param array       $hostVariables An array of host variables
      * @param array       $variables     An array of variables (variables defined in the path and in the host patterns)
      */
-    public function __construct(string $staticPrefix, string $regex, array $tokens, array $pathVariables, string $hostRegex = null, array $hostTokens = array(), array $hostVariables = array(), array $variables = array())
+    public function __construct(string $staticPrefix, string $regex, array $tokens, array $pathVariables, string $hostRegex = null, array $hostTokens = [], array $hostVariables = [], array $variables = [])
     {
         $this->staticPrefix = $staticPrefix;
         $this->regex = $regex;
@@ -54,7 +54,7 @@ public function __construct(string $staticPrefix, string $regex, array $tokens,
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             'vars' => $this->variables,
             'path_prefix' => $this->staticPrefix,
             'path_regex' => $this->regex,
@@ -63,7 +63,7 @@ public function serialize()
             'host_regex' => $this->hostRegex,
             'host_tokens' => $this->hostTokens,
             'host_vars' => $this->hostVariables,
-        ));
+        ]);
     }
 
     /**
@@ -71,7 +71,7 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        $data = unserialize($serialized, array('allowed_classes' => false));
+        $data = unserialize($serialized, ['allowed_classes' => false]);
 
         $this->variables = $data['vars'];
         $this->staticPrefix = $data['path_prefix'];
diff --git a/src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php b/src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php
index 5558ff87fd2b..85e82a35f33b 100644
--- a/src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php
+++ b/src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php
@@ -157,7 +157,7 @@ protected function addRoute(RouteCollection $collection, $annot, $globals, \Refl
 
         $path = $annot->getLocalizedPaths() ?: $annot->getPath();
         $prefix = $globals['localized_paths'] ?: $globals['path'];
-        $paths = array();
+        $paths = [];
 
         if (\is_array($path)) {
             if (!\is_array($prefix)) {
@@ -298,18 +298,18 @@ protected function getGlobals(\ReflectionClass $class)
 
     private function resetGlobals()
     {
-        return array(
+        return [
             'path' => null,
-            'localized_paths' => array(),
-            'requirements' => array(),
-            'options' => array(),
-            'defaults' => array(),
-            'schemes' => array(),
-            'methods' => array(),
+            'localized_paths' => [],
+            'requirements' => [],
+            'options' => [],
+            'defaults' => [],
+            'schemes' => [],
+            'methods' => [],
             'host' => '',
             'condition' => '',
             'name' => '',
-        );
+        ];
     }
 
     protected function createRoute($path, $defaults, $requirements, $options, $host, $schemes, $methods, $condition)
diff --git a/src/Symfony/Component/Routing/Loader/Configurator/Traits/AddTrait.php b/src/Symfony/Component/Routing/Loader/Configurator/Traits/AddTrait.php
index 57dd71f2c13e..45642d2fec0c 100644
--- a/src/Symfony/Component/Routing/Loader/Configurator/Traits/AddTrait.php
+++ b/src/Symfony/Component/Routing/Loader/Configurator/Traits/AddTrait.php
@@ -34,7 +34,7 @@ trait AddTrait
      */
     final public function add(string $name, $path): RouteConfigurator
     {
-        $paths = array();
+        $paths = [];
         $parentConfigurator = $this instanceof CollectionConfigurator ? $this : ($this instanceof RouteConfigurator ? $this->parentConfigurator : null);
 
         if (\is_array($path)) {
diff --git a/src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php b/src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php
index b31eed5a6ced..8370d576c5f2 100644
--- a/src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php
+++ b/src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php
@@ -63,7 +63,7 @@ public function load($resource, $type = null)
             throw new \LogicException(sprintf('%s:getServiceObject() must return an object: %s returned', \get_class($this), \gettype($loaderObject)));
         }
 
-        if (!\is_callable(array($loaderObject, $method))) {
+        if (!\is_callable([$loaderObject, $method])) {
             throw new \BadMethodCallException(sprintf('Method "%s" not found on "%s" when importing routing resource "%s"', $method, \get_class($loaderObject), $resource));
         }
 
diff --git a/src/Symfony/Component/Routing/Loader/XmlFileLoader.php b/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
index 54b0c65c0cd2..241e47f03381 100644
--- a/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
@@ -171,7 +171,7 @@ protected function parseImport(RouteCollection $collection, \DOMElement $node, $
         $imported = $this->import($resource, ('' !== $type ? $type : null), false, $file);
 
         if (!\is_array($imported)) {
-            $imported = array($imported);
+            $imported = [$imported];
         }
 
         foreach ($imported as $subCollection) {
@@ -261,12 +261,12 @@ protected function loadFile($file)
      */
     private function parseConfigs(\DOMElement $node, $path)
     {
-        $defaults = array();
-        $requirements = array();
-        $options = array();
+        $defaults = [];
+        $requirements = [];
+        $options = [];
         $condition = null;
-        $prefixes = array();
-        $paths = array();
+        $prefixes = [];
+        $paths = [];
 
         foreach ($node->getElementsByTagNameNS(self::NAMESPACE_URI, '*') as $n) {
             if ($node !== $n->parentNode) {
@@ -312,7 +312,7 @@ private function parseConfigs(\DOMElement $node, $path)
             $defaults['_controller'] = $controller;
         }
 
-        return array($defaults, $requirements, $options, $condition, $paths, $prefixes);
+        return [$defaults, $requirements, $options, $condition, $paths, $prefixes];
     }
 
     /**
@@ -376,7 +376,7 @@ private function parseDefaultNode(\DOMElement $node, $path)
             case 'string':
                 return trim($node->nodeValue);
             case 'list':
-                $list = array();
+                $list = [];
 
                 foreach ($node->childNodes as $element) {
                     if (!$element instanceof \DOMElement) {
@@ -392,7 +392,7 @@ private function parseDefaultNode(\DOMElement $node, $path)
 
                 return $list;
             case 'map':
-                $map = array();
+                $map = [];
 
                 foreach ($node->childNodes as $element) {
                     if (!$element instanceof \DOMElement) {
diff --git a/src/Symfony/Component/Routing/Loader/YamlFileLoader.php b/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
index bd35c75a9361..68ed1bbeed07 100644
--- a/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
@@ -27,9 +27,9 @@
  */
 class YamlFileLoader extends FileLoader
 {
-    private static $availableKeys = array(
+    private static $availableKeys = [
         'resource', 'type', 'prefix', 'path', 'host', 'schemes', 'methods', 'defaults', 'requirements', 'options', 'condition', 'controller', 'name_prefix', 'trailing_slash_on_root',
-    );
+    ];
     private $yamlParser;
 
     /**
@@ -95,7 +95,7 @@ public function load($file, $type = null)
      */
     public function supports($resource, $type = null)
     {
-        return \is_string($resource) && \in_array(pathinfo($resource, PATHINFO_EXTENSION), array('yml', 'yaml'), true) && (!$type || 'yaml' === $type);
+        return \is_string($resource) && \in_array(pathinfo($resource, PATHINFO_EXTENSION), ['yml', 'yaml'], true) && (!$type || 'yaml' === $type);
     }
 
     /**
@@ -108,12 +108,12 @@ public function supports($resource, $type = null)
      */
     protected function parseRoute(RouteCollection $collection, $name, array $config, $path)
     {
-        $defaults = isset($config['defaults']) ? $config['defaults'] : array();
-        $requirements = isset($config['requirements']) ? $config['requirements'] : array();
-        $options = isset($config['options']) ? $config['options'] : array();
+        $defaults = isset($config['defaults']) ? $config['defaults'] : [];
+        $requirements = isset($config['requirements']) ? $config['requirements'] : [];
+        $options = isset($config['options']) ? $config['options'] : [];
         $host = isset($config['host']) ? $config['host'] : '';
-        $schemes = isset($config['schemes']) ? $config['schemes'] : array();
-        $methods = isset($config['methods']) ? $config['methods'] : array();
+        $schemes = isset($config['schemes']) ? $config['schemes'] : [];
+        $methods = isset($config['methods']) ? $config['methods'] : [];
         $condition = isset($config['condition']) ? $config['condition'] : null;
 
         if (isset($config['controller'])) {
@@ -148,9 +148,9 @@ protected function parseImport(RouteCollection $collection, array $config, $path
     {
         $type = isset($config['type']) ? $config['type'] : null;
         $prefix = isset($config['prefix']) ? $config['prefix'] : '';
-        $defaults = isset($config['defaults']) ? $config['defaults'] : array();
-        $requirements = isset($config['requirements']) ? $config['requirements'] : array();
-        $options = isset($config['options']) ? $config['options'] : array();
+        $defaults = isset($config['defaults']) ? $config['defaults'] : [];
+        $requirements = isset($config['requirements']) ? $config['requirements'] : [];
+        $options = isset($config['options']) ? $config['options'] : [];
         $host = isset($config['host']) ? $config['host'] : null;
         $condition = isset($config['condition']) ? $config['condition'] : null;
         $schemes = isset($config['schemes']) ? $config['schemes'] : null;
@@ -166,7 +166,7 @@ protected function parseImport(RouteCollection $collection, array $config, $path
         $imported = $this->import($config['resource'], $type, false, $file);
 
         if (!\is_array($imported)) {
-            $imported = array($imported);
+            $imported = [$imported];
         }
 
         foreach ($imported as $subCollection) {
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
index d75b36ae9c50..b5be183a7ca5 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
@@ -34,7 +34,7 @@ class PhpMatcherDumper extends MatcherDumper
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    private $expressionLanguageProviders = array();
+    private $expressionLanguageProviders = [];
 
     /**
      * Dumps a set of routes to a PHP class.
@@ -48,12 +48,12 @@ class PhpMatcherDumper extends MatcherDumper
      *
      * @return string A PHP class representing the matcher class
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
-        $options = array_replace(array(
+        $options = array_replace([
             'class' => 'ProjectUrlMatcher',
             'base_class' => 'Symfony\\Component\\Routing\\Matcher\\UrlMatcher',
-        ), $options);
+        ], $options);
 
         // trailing slash support is only enabled if we know how to redirect the user
         $interfaces = class_implements($options['base_class']);
@@ -102,7 +102,7 @@ private function generateMatchMethod(): string
                 $host = '/'.strtr(strrev($host), '}.{', '(/)');
             }
 
-            $routes->addRoute($host ?: '/(.*)', array($name, $route));
+            $routes->addRoute($host ?: '/(.*)', [$name, $route]);
         }
         $routes = $matchHost ? $routes->populateCollection(new RouteCollection()) : $this->getRoutes();
 
@@ -208,7 +208,7 @@ private function compileRoutes(RouteCollection $routes, bool $matchHost): string
      */
     private function groupStaticRoutes(RouteCollection $collection): array
     {
-        $staticRoutes = $dynamicRegex = array();
+        $staticRoutes = $dynamicRegex = [];
         $dynamicRoutes = new RouteCollection();
 
         foreach ($collection->all() as $name => $route) {
@@ -229,20 +229,20 @@ private function groupStaticRoutes(RouteCollection $collection): array
                 }
                 foreach ($dynamicRegex as list($hostRx, $rx)) {
                     if (preg_match($rx, $url) && (!$host || !$hostRx || preg_match($hostRx, $host))) {
-                        $dynamicRegex[] = array($hostRegex, $regex);
+                        $dynamicRegex[] = [$hostRegex, $regex];
                         $dynamicRoutes->add($name, $route);
                         continue 2;
                     }
                 }
 
-                $staticRoutes[$url][$name] = array($route, $hasTrailingSlash);
+                $staticRoutes[$url][$name] = [$route, $hasTrailingSlash];
             } else {
-                $dynamicRegex[] = array($hostRegex, $regex);
+                $dynamicRegex[] = [$hostRegex, $regex];
                 $dynamicRoutes->add($name, $route);
             }
         }
 
-        return array($staticRoutes, $dynamicRoutes);
+        return [$staticRoutes, $dynamicRoutes];
     }
 
     /**
@@ -274,7 +274,7 @@ private function compileStaticRoutes(array $staticRoutes, bool $matchHost): stri
                     $default .= sprintf(
                         "%s => array(%s, %s, %s, %s, %s),\n",
                         self::export($url),
-                        self::export(array('_route' => $name) + $defaults),
+                        self::export(['_route' => $name] + $defaults),
                         self::export(!$route->compile()->getHostVariables() ? $route->getHost() : $route->compile()->getHostRegex() ?: null),
                         self::export(array_flip($route->getMethods()) ?: null),
                         self::export(array_flip($route->getSchemes()) ?: null),
@@ -332,15 +332,15 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
             return '';
         }
         $code = '';
-        $state = (object) array(
+        $state = (object) [
             'regex' => '',
             'switch' => '',
             'default' => '',
             'mark' => 0,
             'markTail' => 0,
-            'hostVars' => array(),
-            'vars' => array(),
-        );
+            'hostVars' => [],
+            'vars' => [],
+        ];
         $state->getVars = static function ($m) use ($state) {
             if ('_route' === $m[1]) {
                 return '?:';
@@ -353,13 +353,13 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
 
         $chunkSize = 0;
         $prev = null;
-        $perModifiers = array();
+        $perModifiers = [];
         foreach ($collection->all() as $name => $route) {
             preg_match('#[a-zA-Z]*$#', $route->compile()->getRegex(), $rx);
             if ($chunkLimit < ++$chunkSize || $prev !== $rx[0] && $route->compile()->getPathVariables()) {
                 $chunkSize = 1;
                 $routes = new RouteCollection();
-                $perModifiers[] = array($rx[0], $routes);
+                $perModifiers[] = [$rx[0], $routes];
                 $prev = $rx[0];
             }
             $routes->add($name, $route);
@@ -367,12 +367,12 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
 
         foreach ($perModifiers as list($modifiers, $routes)) {
             $prev = false;
-            $perHost = array();
+            $perHost = [];
             foreach ($routes->all() as $name => $route) {
                 $regex = $route->compile()->getHostRegex();
                 if ($prev !== $regex) {
                     $routes = new RouteCollection();
-                    $perHost[] = array($regex, $routes);
+                    $perHost[] = [$regex, $routes];
                     $prev = $regex;
                 }
                 $routes->add($name, $route);
@@ -387,12 +387,12 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
                 if ($matchHost) {
                     if ($hostRegex) {
                         preg_match('#^.\^(.*)\$.[a-zA-Z]*$#', $hostRegex, $rx);
-                        $state->vars = array();
+                        $state->vars = [];
                         $hostRegex = '(?i:'.preg_replace_callback('#\?P<([^>]++)>#', $state->getVars, $rx[1]).')\.';
                         $state->hostVars = $state->vars;
                     } else {
                         $hostRegex = '(?:(?:[^./]*+\.)++)';
-                        $state->hostVars = array();
+                        $state->hostVars = [];
                     }
                     $state->mark += \strlen($rx = ($prev ? ')' : '')."|{$hostRegex}(?");
                     $code .= "\n                .".self::export($rx);
@@ -404,14 +404,14 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
                 foreach ($routes->all() as $name => $route) {
                     preg_match('#^.\^(.*)\$.[a-zA-Z]*$#', $route->compile()->getRegex(), $rx);
 
-                    $state->vars = array();
+                    $state->vars = [];
                     $regex = preg_replace_callback('#\?P<([^>]++)>#', $state->getVars, $rx[1]);
                     if ($hasTrailingSlash = '/' !== $regex && '/' === $regex[-1]) {
                         $regex = substr($regex, 0, -1);
                     }
                     $hasTrailingVar = (bool) preg_match('#\{\w+\}/?$#', $route->getPath());
 
-                    $tree->addRoute($regex, array($name, $regex, $state->vars, $route, $hasTrailingSlash, $hasTrailingVar));
+                    $tree->addRoute($regex, [$name, $regex, $state->vars, $route, $hasTrailingSlash, $hasTrailingVar]);
                 }
 
                 $code .= $this->compileStaticPrefixCollection($tree, $state);
@@ -520,7 +520,7 @@ private function compileStaticPrefixCollection(StaticPrefixCollection $tree, \st
                 $state->default .= sprintf(
                     "%s => array(%s, %s, %s, %s, %s, %s),\n",
                     $state->mark,
-                    self::export(array('_route' => $name) + $defaults),
+                    self::export(['_route' => $name] + $defaults),
                     self::export($vars),
                     self::export(array_flip($route->getMethods()) ?: null),
                     self::export(array_flip($route->getSchemes()) ?: null),
@@ -639,7 +639,7 @@ private function compileSwitchDefault(bool $hasVars, bool $matchHost): string
     private function compileRoute(Route $route, string $name, bool $checkHost, bool $hasTrailingSlash, bool $hasTrailingVar = false, array $vars = null): string
     {
         $compiledRoute = $route->compile();
-        $conditions = array();
+        $conditions = [];
         $matches = (bool) $compiledRoute->getPathVariables();
         $hostMatches = (bool) $compiledRoute->getHostVariables();
         $methods = array_flip($route->getMethods());
@@ -718,7 +718,7 @@ private function compileRoute(Route $route, string $name, bool $checkHost, bool
         }
 
         if ($route->getCondition()) {
-            $expression = $this->getExpressionLanguage()->compile($route->getCondition(), array('context', 'request'));
+            $expression = $this->getExpressionLanguage()->compile($route->getCondition(), ['context', 'request']);
 
             if (false !== strpos($expression, '$request')) {
                 $conditions[] = '($request = $request ?? $this->request ?: $this->createRequest($pathinfo))';
@@ -755,7 +755,7 @@ private function compileRoute(Route $route, string $name, bool $checkHost, bool
 
         // optimize parameters array
         if ($matches || $hostMatches) {
-            $vars = array("array('_route' => '$name')");
+            $vars = ["array('_route' => '$name')"];
             if ($matches || ($hostMatches && !$checkHost)) {
                 $vars[] = '$matches';
             }
@@ -769,7 +769,7 @@ private function compileRoute(Route $route, string $name, bool $checkHost, bool
                 self::export($defaults)
             );
         } elseif ($defaults) {
-            $code .= sprintf("            \$ret = %s;\n", self::export(array('_route' => $name) + $defaults));
+            $code .= sprintf("            \$ret = %s;\n", self::export(['_route' => $name] + $defaults));
         } else {
             $code .= sprintf("            \$ret = array('_route' => '%s');\n", $name);
         }
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/StaticPrefixCollection.php b/src/Symfony/Component/Routing/Matcher/Dumper/StaticPrefixCollection.php
index 4eea8593e17b..50f974f2e812 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/StaticPrefixCollection.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/StaticPrefixCollection.php
@@ -28,17 +28,17 @@ class StaticPrefixCollection
     /**
      * @var string[]
      */
-    private $staticPrefixes = array();
+    private $staticPrefixes = [];
 
     /**
      * @var string[]
      */
-    private $prefixes = array();
+    private $prefixes = [];
 
     /**
      * @var array[]|self[]
      */
-    private $items = array();
+    private $items = [];
 
     public function __construct(string $prefix = '/')
     {
@@ -106,7 +106,7 @@ public function addRoute(string $prefix, $route)
                 $child = new self($commonPrefix);
                 list($child->prefixes[0], $child->staticPrefixes[0]) = $child->getCommonPrefix($this->prefixes[$i], $this->prefixes[$i]);
                 list($child->prefixes[1], $child->staticPrefixes[1]) = $child->getCommonPrefix($prefix, $prefix);
-                $child->items = array($this->items[$i], $route);
+                $child->items = [$this->items[$i], $route];
 
                 $this->staticPrefixes[$i] = $commonStaticPrefix;
                 $this->prefixes[$i] = $commonPrefix;
@@ -149,7 +149,7 @@ private function getCommonPrefix(string $prefix, string $anotherPrefix): array
         $baseLength = \strlen($this->prefix);
         $end = min(\strlen($prefix), \strlen($anotherPrefix));
         $staticLength = null;
-        set_error_handler(array(__CLASS__, 'handleError'));
+        set_error_handler([__CLASS__, 'handleError']);
 
         for ($i = $baseLength; $i < $end && $prefix[$i] === $anotherPrefix[$i]; ++$i) {
             if ('(' === $prefix[$i]) {
@@ -192,7 +192,7 @@ private function getCommonPrefix(string $prefix, string $anotherPrefix): array
             } while (0b10 === (\ord($prefix[$i]) >> 6));
         }
 
-        return array(substr($prefix, 0, $i), substr($prefix, 0, $staticLength ?? $i));
+        return [substr($prefix, 0, $i), substr($prefix, 0, $staticLength ?? $i)];
     }
 
     public static function handleError($type, $msg)
diff --git a/src/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php b/src/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php
index bfdb59b3785a..eb7bec7f3442 100644
--- a/src/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php
+++ b/src/Symfony/Component/Routing/Matcher/RedirectableUrlMatcher.php
@@ -27,7 +27,7 @@ public function match($pathinfo)
         try {
             return parent::match($pathinfo);
         } catch (ResourceNotFoundException $e) {
-            if (!\in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+            if (!\in_array($this->context->getMethod(), ['HEAD', 'GET'], true)) {
                 throw $e;
             }
 
diff --git a/src/Symfony/Component/Routing/Matcher/UrlMatcher.php b/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
index 296435206a71..5827c9053588 100644
--- a/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
+++ b/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
@@ -37,14 +37,14 @@ class UrlMatcher implements UrlMatcherInterface, RequestMatcherInterface
     /**
      * Collects HTTP methods that would be allowed for the request.
      */
-    protected $allow = array();
+    protected $allow = [];
 
     /**
      * Collects URI schemes that would be allowed for the request.
      *
      * @internal
      */
-    protected $allowSchemes = array();
+    protected $allowSchemes = [];
 
     protected $routes;
     protected $request;
@@ -53,7 +53,7 @@ class UrlMatcher implements UrlMatcherInterface, RequestMatcherInterface
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    protected $expressionLanguageProviders = array();
+    protected $expressionLanguageProviders = [];
 
     public function __construct(RouteCollection $routes, RequestContext $context)
     {
@@ -82,7 +82,7 @@ public function getContext()
      */
     public function match($pathinfo)
     {
-        $this->allow = $this->allowSchemes = array();
+        $this->allow = $this->allowSchemes = [];
 
         if ($ret = $this->matchCollection(rawurldecode($pathinfo) ?: '/', $this->routes)) {
             return $ret;
@@ -166,14 +166,14 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
 
             if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                 if ($supportsTrailingSlash && (!$requiredMethods || \in_array('GET', $requiredMethods))) {
-                    return $this->allow = $this->allowSchemes = array();
+                    return $this->allow = $this->allowSchemes = [];
                 }
                 if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
                     continue;
                 }
             }
 
-            $hostMatches = array();
+            $hostMatches = [];
             if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
                 continue;
             }
@@ -201,10 +201,10 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
                 continue;
             }
 
-            return $this->getAttributes($route, $name, array_replace($matches, $hostMatches, isset($status[1]) ? $status[1] : array()));
+            return $this->getAttributes($route, $name, array_replace($matches, $hostMatches, isset($status[1]) ? $status[1] : []));
         }
 
-        return array();
+        return [];
     }
 
     /**
@@ -244,11 +244,11 @@ protected function getAttributes(Route $route, $name, array $attributes)
     protected function handleRouteRequirements($pathinfo, $name, Route $route)
     {
         // expression condition
-        if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), array('context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)))) {
-            return array(self::REQUIREMENT_MISMATCH, null);
+        if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), ['context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)])) {
+            return [self::REQUIREMENT_MISMATCH, null];
         }
 
-        return array(self::REQUIREMENT_MATCH, null);
+        return [self::REQUIREMENT_MATCH, null];
     }
 
     /**
@@ -291,9 +291,9 @@ protected function createRequest($pathinfo)
             return null;
         }
 
-        return Request::create($this->context->getScheme().'://'.$this->context->getHost().$this->context->getBaseUrl().$pathinfo, $this->context->getMethod(), $this->context->getParameters(), array(), array(), array(
+        return Request::create($this->context->getScheme().'://'.$this->context->getHost().$this->context->getBaseUrl().$pathinfo, $this->context->getMethod(), $this->context->getParameters(), [], [], [
             'SCRIPT_FILENAME' => $this->context->getBaseUrl(),
             'SCRIPT_NAME' => $this->context->getBaseUrl(),
-        ));
+        ]);
     }
 }
diff --git a/src/Symfony/Component/Routing/Route.php b/src/Symfony/Component/Routing/Route.php
index 46724dbd5620..58675902a1c5 100644
--- a/src/Symfony/Component/Routing/Route.php
+++ b/src/Symfony/Component/Routing/Route.php
@@ -21,11 +21,11 @@ class Route implements \Serializable
 {
     private $path = '/';
     private $host = '';
-    private $schemes = array();
-    private $methods = array();
-    private $defaults = array();
-    private $requirements = array();
-    private $options = array();
+    private $schemes = [];
+    private $methods = [];
+    private $defaults = [];
+    private $requirements = [];
+    private $options = [];
     private $condition = '';
 
     /**
@@ -50,7 +50,7 @@ class Route implements \Serializable
      * @param string|string[] $methods      A required HTTP method or an array of restricted methods
      * @param string          $condition    A condition that should evaluate to true for the route to match
      */
-    public function __construct(string $path, array $defaults = array(), array $requirements = array(), array $options = array(), ?string $host = '', $schemes = array(), $methods = array(), ?string $condition = '')
+    public function __construct(string $path, array $defaults = [], array $requirements = [], array $options = [], ?string $host = '', $schemes = [], $methods = [], ?string $condition = '')
     {
         $this->setPath($path);
         $this->addDefaults($defaults);
@@ -67,7 +67,7 @@ public function __construct(string $path, array $defaults = array(), array $requ
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             'path' => $this->path,
             'host' => $this->host,
             'defaults' => $this->defaults,
@@ -77,7 +77,7 @@ public function serialize()
             'methods' => $this->methods,
             'condition' => $this->condition,
             'compiled' => $this->compiled,
-        ));
+        ]);
     }
 
     /**
@@ -262,9 +262,9 @@ public function getOptions()
      */
     public function setOptions(array $options)
     {
-        $this->options = array(
+        $this->options = [
             'compiler_class' => 'Symfony\\Component\\Routing\\RouteCompiler',
-        );
+        ];
 
         return $this->addOptions($options);
     }
@@ -351,7 +351,7 @@ public function getDefaults()
      */
     public function setDefaults(array $defaults)
     {
-        $this->defaults = array();
+        $this->defaults = [];
 
         return $this->addDefaults($defaults);
     }
@@ -436,7 +436,7 @@ public function getRequirements()
      */
     public function setRequirements(array $requirements)
     {
-        $this->requirements = array();
+        $this->requirements = [];
 
         return $this->addRequirements($requirements);
     }
diff --git a/src/Symfony/Component/Routing/RouteCollection.php b/src/Symfony/Component/Routing/RouteCollection.php
index 0f939d34776e..6c642300a96d 100644
--- a/src/Symfony/Component/Routing/RouteCollection.php
+++ b/src/Symfony/Component/Routing/RouteCollection.php
@@ -158,7 +158,7 @@ public function addPrefix($prefix, array $defaults = [], array $requirements = [
      */
     public function addNamePrefix(string $prefix)
     {
-        $prefixedRoutes = array();
+        $prefixedRoutes = [];
 
         foreach ($this->routes as $name => $route) {
             $prefixedRoutes[$prefix.$name] = $route;
diff --git a/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php b/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
index 4d6b2a9c8b45..9697aac88bca 100644
--- a/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
+++ b/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
@@ -21,7 +21,7 @@ class RouteTest extends TestCase
      */
     public function testInvalidRouteParameter()
     {
-        $route = new Route(array('foo' => 'bar'));
+        $route = new Route(['foo' => 'bar']);
     }
 
     /**
@@ -29,7 +29,7 @@ public function testInvalidRouteParameter()
      */
     public function testTryingToSetLocalesDirectly()
     {
-        $route = new Route(array('locales' => array('nl' => 'bar')));
+        $route = new Route(['locales' => ['nl' => 'bar']]);
     }
 
     /**
@@ -37,23 +37,23 @@ public function testTryingToSetLocalesDirectly()
      */
     public function testRouteParameters($parameter, $value, $getter)
     {
-        $route = new Route(array($parameter => $value));
+        $route = new Route([$parameter => $value]);
         $this->assertEquals($route->$getter(), $value);
     }
 
     public function getValidParameters()
     {
-        return array(
-            array('value', '/Blog', 'getPath'),
-            array('requirements', array('locale' => 'en'), 'getRequirements'),
-            array('options', array('compiler_class' => 'RouteCompiler'), 'getOptions'),
-            array('name', 'blog_index', 'getName'),
-            array('defaults', array('_controller' => 'MyBlogBundle:Blog:index'), 'getDefaults'),
-            array('schemes', array('https'), 'getSchemes'),
-            array('methods', array('GET', 'POST'), 'getMethods'),
-            array('host', '{locale}.example.com', 'getHost'),
-            array('condition', 'context.getMethod() == "GET"', 'getCondition'),
-            array('value', array('nl' => '/hier', 'en' => '/here'), 'getLocalizedPaths'),
-        );
+        return [
+            ['value', '/Blog', 'getPath'],
+            ['requirements', ['locale' => 'en'], 'getRequirements'],
+            ['options', ['compiler_class' => 'RouteCompiler'], 'getOptions'],
+            ['name', 'blog_index', 'getName'],
+            ['defaults', ['_controller' => 'MyBlogBundle:Blog:index'], 'getDefaults'],
+            ['schemes', ['https'], 'getSchemes'],
+            ['methods', ['GET', 'POST'], 'getMethods'],
+            ['host', '{locale}.example.com', 'getHost'],
+            ['condition', 'context.getMethod() == "G
10000
ET"', 'getCondition'],
+            ['value', ['nl' => '/hier', 'en' => '/here'], 'getLocalizedPaths'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher0.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher0.php
index 49972ca8b750..b3c5dbfa8645 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher0.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher0.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
index 3f1930dd49b3..43264ca13409 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -30,25 +30,25 @@ public function match($pathinfo)
 
         switch ($trimmedPathinfo) {
             default:
-                $routes = array(
-                    '/test/baz' => array(array('_route' => 'baz'), null, null, null, false),
-                    '/test/baz.html' => array(array('_route' => 'baz2'), null, null, null, false),
-                    '/test/baz3' => array(array('_route' => 'baz3'), null, null, null, true),
-                    '/foofoo' => array(array('_route' => 'foofoo', 'def' => 'test'), null, null, null, false),
-                    '/spa ce' => array(array('_route' => 'space'), null, null, null, false),
-                    '/multi/new' => array(array('_route' => 'overridden2'), null, null, null, false),
-                    '/multi/hey' => array(array('_route' => 'hey'), null, null, null, true),
-                    '/ababa' => array(array('_route' => 'ababa'), null, null, null, false),
-                    '/route1' => array(array('_route' => 'route1'), 'a.example.com', null, null, false),
-                    '/c2/route2' => array(array('_route' => 'route2'), 'a.example.com', null, null, false),
-                    '/route4' => array(array('_route' => 'route4'), 'a.example.com', null, null, false),
-                    '/c2/route3' => array(array('_route' => 'route3'), 'b.example.com', null, null, false),
-                    '/route5' => array(array('_route' => 'route5'), 'c.example.com', null, null, false),
-                    '/route6' => array(array('_route' => 'route6'), null, null, null, false),
-                    '/route11' => array(array('_route' => 'route11'), '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false),
-                    '/route12' => array(array('_route' => 'route12', 'var1' => 'val'), '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false),
-                    '/route17' => array(array('_route' => 'route17'), null, null, null, false),
-                );
+                $routes = [
+                    '/test/baz' => [['_route' => 'baz'], null, null, null, false],
+                    '/test/baz.html' => [['_route' => 'baz2'], null, null, null, false],
+                    '/test/baz3' => [['_route' => 'baz3'], null, null, null, true],
+                    '/foofoo' => [['_route' => 'foofoo', 'def' => 'test'], null, null, null, false],
+                    '/spa ce' => [['_route' => 'space'], null, null, null, false],
+                    '/multi/new' => [['_route' => 'overridden2'], null, null, null, false],
+                    '/multi/hey' => [['_route' => 'hey'], null, null, null, true],
+                    '/ababa' => [['_route' => 'ababa'], null, null, null, false],
+                    '/route1' => [['_route' => 'route1'], 'a.example.com', null, null, false],
+                    '/c2/route2' => [['_route' => 'route2'], 'a.example.com', null, null, false],
+                    '/route4' => [['_route' => 'route4'], 'a.example.com', null, null, false],
+                    '/c2/route3' => [['_route' => 'route3'], 'b.example.com', null, null, false],
+                    '/route5' => [['_route' => 'route5'], 'c.example.com', null, null, false],
+                    '/route6' => [['_route' => 'route6'], null, null, null, false],
+                    '/route11' => [['_route' => 'route11'], '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false],
+                    '/route12' => [['_route' => 'route12', 'var1' => 'val'], '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false],
+                    '/route17' => [['_route' => 'route17'], null, null, null, false],
+                ];
 
                 if (!isset($routes[$trimmedPathinfo])) {
                     break;
@@ -84,7 +84,7 @@ public function match($pathinfo)
         }
 
         $matchedPathinfo = $host.'.'.$pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                 .'|(?:(?:[^./]*+\\.)++)(?'
                     .'|/foo/(baz|symfony)(*:47)'
@@ -131,7 +131,7 @@ public function match($pathinfo)
                     .')'
                 .')'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
@@ -145,9 +145,9 @@ public function match($pathinfo)
                             $matches = $n;
                         }
 
-                        $matches = array('foo' => $matches[1] ?? null);
+                        $matches = ['foo' => $matches[1] ?? null];
 
-                        return $this->mergeDefaults(array('_route' => 'baz4') + $matches, array());
+                        return $this->mergeDefaults(['_route' => 'baz4'] + $matches, []);
                         not_baz4:
 
                         // baz5
@@ -158,8 +158,8 @@ public function match($pathinfo)
                             $matches = $n;
                         }
 
-                        $ret = $this->mergeDefaults(array('_route' => 'baz5') + $matches, array());
-                        if (!isset(($a = array('POST' => 0))[$requestMethod])) {
+                        $ret = $this->mergeDefaults(['_route' => 'baz5'] + $matches, []);
+                        if (!isset(($a = ['POST' => 0])[$requestMethod])) {
                             $allow += $a;
                             goto not_baz5;
                         }
@@ -175,8 +175,8 @@ public function match($pathinfo)
                             $matches = $n;
                         }
 
-                        $ret = $this->mergeDefaults(array('_route' => 'baz.baz6') + $matches, array());
-                        if (!isset(($a = array('PUT' => 0))[$requestMethod])) {
+                        $ret = $this->mergeDefaults(['_route' => 'baz.baz6'] + $matches, []);
+                        if (!isset(($a = ['PUT' => 0])[$requestMethod])) {
                             $allow += $a;
                             goto not_bazbaz6;
                         }
@@ -195,10 +195,10 @@ public function match($pathinfo)
                             goto not_foo1;
                         }
 
-                        $matches = array('foo' => $matches[1] ?? null);
+                        $matches = ['foo' => $matches[1] ?? null];
 
-                        $ret = $this->mergeDefaults(array('_route' => 'foo1') + $matches, array());
-                        if (!isset(($a = array('PUT' => 0))[$requestMethod])) {
+                        $ret = $this->mergeDefaults(['_route' => 'foo1'] + $matches, []);
+                        if (!isset(($a = ['PUT' => 0])[$requestMethod])) {
                             $allow += $a;
                             goto not_foo1;
                         }
@@ -217,9 +217,9 @@ public function match($pathinfo)
                             goto not_foo2;
                         }
 
-                        $matches = array('foo1' => $matches[1] ?? null);
+                        $matches = ['foo1' => $matches[1] ?? null];
 
-                        return $this->mergeDefaults(array('_route' => 'foo2') + $matches, array());
+                        return $this->mergeDefaults(['_route' => 'foo2'] + $matches, []);
                         not_foo2:
 
                         break;
@@ -233,32 +233,32 @@ public function match($pathinfo)
                             goto not_foo3;
                         }
 
-                        $matches = array('_locale' => $matches[1] ?? null, 'foo' => $matches[2] ?? null);
+                        $matches = ['_locale' => $matches[1] ?? null, 'foo' => $matches[2] ?? null];
 
-                        return $this->mergeDefaults(array('_route' => 'foo3') + $matches, array());
+                        return $this->mergeDefaults(['_route' => 'foo3'] + $matches, []);
                         not_foo3:
 
                         break;
                     default:
-                        $routes = array(
-                            47 => array(array('_route' => 'foo', 'def' => 'test'), array('bar'), null, null, false, true),
-                            70 => array(array('_route' => 'bar'), array('foo'), array('GET' => 0, 'HEAD' => 1), null, false, true),
-                            90 => array(array('_route' => 'barhead'), array('foo'), array('GET' => 0), null, false, true),
-                            131 => array(array('_route' => 'quoter'), array('quoter'), null, null, false, true),
-                            168 => array(array('_route' => 'bar1'), array('bar'), null, null, false, true),
-                            181 => array(array('_route' => 'overridden'), array('var'), null, null, false, true),
-                            212 => array(array('_route' => 'bar2'), array('bar1'), null, null, false, true),
-                            248 => array(array('_route' => 'helloWorld', 'who' => 'World!'), array('who'), null, null, false, true),
-                            287 => array(array('_route' => 'bar3'), array('_locale', 'bar'), null, null, false, true),
-                            309 => array(array('_route' => 'foo4'), array('foo'), null, null, false, true),
-                            371 => array(array('_route' => 'route13'), array('var1', 'name'), null, null, false, true),
-                            389 => array(array('_route' => 'route14', 'var1' => 'val'), array('var1', 'name'), null, null, false, true),
-                            441 => array(array('_route' => 'route15'), array('name'), null, null, false, true),
-                            489 => array(array('_route' => 'route16', 'var1' => 'val'), array('name'), null, null, false, true),
-                            510 => array(array('_route' => 'a'), array(), null, null, false, false),
-                            531 => array(array('_route' => 'b'), array('var'), null, null, false, true),
-                            549 => array(array('_route' => 'c'), array('var'), null, null, false, true),
-                        );
+                        $routes = [
+                            47 => [['_route' => 'foo', 'def' => 'test'], ['bar'], null, null, false, true],
+                            70 => [['_route' => 'bar'], ['foo'], ['GET' => 0, 'HEAD' => 1], null, false, true],
+                            90 => [['_route' => 'barhead'], ['foo'], ['GET' => 0], null, false, true],
+                            131 => [['_route' => 'quoter'], ['quoter'], null, null, false, true],
+                            168 => [['_route' => 'bar1'], ['bar'], null, null, false, true],
+                            181 => [['_route' => 'overridden'], ['var'], null, null, false, true],
+                            212 => [['_route' => 'bar2'], ['bar1'], null, null, false, true],
+                            248 => [['_route' => 'helloWorld', 'who' => 'World!'], ['who'], null, null, false, true],
+                            287 => [['_route' => 'bar3'], ['_locale', 'bar'], null, null, false, true],
+                            309 => [['_route' => 'foo4'], ['foo'], null, null, false, true],
+                            371 => [['_route' => 'route13'], ['var1', 'name'], null, null, false, true],
+                            389 => [['_route' => 'route14', 'var1' => 'val'], ['var1', 'name'], null, null, false, true],
+                            441 => [['_route' => 'route15'], ['name'], null, null, false, true],
+                            489 => [['_route' => 'route16', 'var1' => 'val'], ['name'], null, null, false, true],
+                            510 => [['_route' => 'a'], [], null, null, false, false],
+                            531 => [['_route' => 'b'], ['var'], null, null, false, true],
+                            549 => [['_route' => 'c'], ['var'], null, null, false, true],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
index 25ea419a49f7..c2547956fddc 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -28,7 +28,7 @@ public function match($pathinfo)
         }
 
         $matchedPathinfo = $pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                     .'|/c(?'
                         .'|f(?'
@@ -1783,1014 +1783,1014 @@ public function match($pathinfo)
                         .'|9c9ad/([^/]++)/([^/]++)/([^/]++)/49c9ad(*:49718)'
                     .')'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
                 switch ($m = (int) $matches['MARK']) {
                     default:
-                        $routes = array(
-                            54 => array(array('_route' => '_0'), array('a', 'b', 'c'), null, null, false, false),
-                            102 => array(array('_route' => '_190'), array('a', 'b', 'c'), null, null, false, false),
-                            147 => array(array('_route' => '_478'), array('a', 'b', 'c'), null, null, false, false),
-                            194 => array(array('_route' => '_259'), array('a', 'b', 'c'), null, null, false, false),
-                            240 => array(array('_route' => '_368'), array('a', 'b', 'c'), null, null, false, false),
-                            291 => array(array('_route' => '_1'), array('a', 'b', 'c'), null, null, false, false),
-                            337 => array(array('_route' => '_116'), array('a', 'b', 'c'), null, null, false, false),
-                            383 => array(array('_route' => '_490'), array('a', 'b', 'c'), null, null, false, false),
-                            434 => array(array('_route' => '_2'), array('a', 'b', 'c'), null, null, false, false),
-                            480 => array(array('_route' => '_124'), array('a', 'b', 'c'), null, null, false, false),
-                            526 => array(array('_route' => '_389'), array('a', 'b', 'c'), null, null, false, false),
-                            577 => array(array('_route' => '_8'), array('a', 'b', 'c'), null, null, false, false),
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-                            44028 => array(array('_route' => '_964'), array('a', 'b', 'c'), null, null, false, false),
-                            44086 => array(array('_route' => '_530'), array('a', 'b', 'c'), null, null, false, false),
-                            44134 => array(array('_route' => '_703'), array('a', 'b', 'c'), null, null, false, false),
-                            44187 => array(array('_route' => '_533'), array('a', 'b', 'c'), null, null, false, false),
-                            44235 => array(array('_route' => '_739'), array('a', 'b', 'c'), null, null, false, false),
-                            44283 => array(array('_route' => '_791'), array('a', 'b', 'c'), null, null, false, false),
-                            44331 => array(array('_route' => '_987'), array('a', 'b', 'c'), null, null, false, false),
-                            44384 => array(array('_route' => '_566'), array('a', 'b', 'c'), null, null, false, false),
-                            44432 => array(array('_route' => '_592'), array('a', 'b', 'c'), null, null, false, false),
-                            44488 => array(array('_route' => '_568'), array('a', 'b', 'c'), null, null, false, false),
-                            44534 => array(array('_route' => '_868'), array('a', 'b', 'c'), null, null, false, false),
-                            44583 => array(array('_route' => '_878'), array('a', 'b', 'c'), null, null, false, false),
-                            44636 => array(array('_route' => '_588'), array('a', 'b', 'c'), null, null, false, false),
-                            44684 => array(array('_route' => '_793'), array('a', 'b', 'c'), null, null, false, false),
-                            44732 => array(array('_route' => '_917'), array('a', 'b', 'c'), null, null, false, false),
-                            44785 => array(array('_route' => '_600'), array('a', 'b', 'c'), null, null, false, false),
-                            44833 => array(array('_route' => '_728'), array('a', 'b', 'c'), null, null, false, false),
-                            44886 => array(array('_route' => '_603'), array('a', 'b', 'c'), null, null, false, false),
-                            44934 => array(array('_route' => '_765'), array('a', 'b', 'c'), null, null, false, false),
-                            44987 => array(array('_route' => '_607'), array('a', 'b', 'c'), null, null, false, false),
-                            45035 => array(array('_route' => '_676'), array('a', 'b', 'c'), null, null, false, false),
-                            45083 => array(array('_route' => '_804'), array('a', 'b', 'c'), null, null, false, false),
-                            45136 => array(array('_route' => '_609'), array('a', 'b', 'c'), null, null, false, false),
-                            45184 => array(array('_route' => '_961'), array('a', 'b', 'c'), null, null, false, false),
-                            45232 => array(array('_route' => '_980'), array('a', 'b', 'c'), null, null, false, false),
-                            45282 => array(array('_route' => '_714'), array('a', 'b', 'c'), null, null, false, false),
-                            45334 => array(array('_route' => '_730'), array('a', 'b', 'c'), null, null, false, false),
-                            45382 => array(array('_route' => '_806'), array('a', 'b', 'c'), null, null, false, false),
-                            45430 => array(array('_route' => '_825'), array('a', 'b', 'c'), null, null, false, false),
-                            45478 => array(array('_route' => '_879'), array('a', 'b', 'c'), null, null, false, false),
-                            45526 => array(array('_route' => '_893'), array('a', 'b', 'c'), null, null, false, false),
-                            45576 => array(array('_route' => '_928'), array('a', 'b', 'c'), null, null, false, false),
-                            45628 => array(array('_route' => '_932'), array('a', 'b', 'c'), null, null, false, false),
-                            45676 => array(array('_route' => '_958'), array('a', 'b', 'c'), null, null, false, false),
-                            45726 => array(array('_route' => '_984'), array('a', 'b', 'c'), null, null, false, false),
-                            45784 => array(array('_route' => '_538'), array('a', 'b', 'c'), null, null, false, false),
-                            45832 => array(array('_route' => '_993'), array('a', 'b', 'c'), null, null, false, false),
-                            45882 => array(array('_route' => '_542'), array('a', 'b', 'c'), null, null, false, false),
-                            45934 => array(array('_route' => '_551'), array('a', 'b', 'c'), null, null, false, false),
-                            45982 => array(array('_route' => '_687'), array('a', 'b', 'c'), null, null, false, false),
-                            46030 => array(array('_route' => '_724'), array('a', 'b', 'c'), null, null, false, false),
-                            46078 => array(array('_route' => '_925'), array('a', 'b', 'c'), null, null, false, false),
-                            46131 => array(array('_route' => '_587'), array('a', 'b', 'c'), null, null, false, false),
-                            46179 => array(array('_route' => '_914'), array('a', 'b', 'c'), null, null, false, false),
-                            46229 => array(array('_route' => '_616'), array('a', 'b', 'c'), null, null, false, false),
-                            46284 => array(array('_route' => '_677'), array('a', 'b', 'c'), null, null, false, false),
-                            46331 => array(array('_route' => '_815'), array('a', 'b', 'c'), null, null, false, false),
-                            46380 => array(array('_route' => '_781'), array('a', 'b', 'c'), null, null, false, false),
-                            46430 => array(array('_route' => '_717'), array('a', 'b', 'c'), null, null, false, false),
-                            46482 => array(array('_route' => '_782'), array('a', 'b', 'c'), null, null, false, false),
-                            46530 => array(array('_route' => '_832'), array('a', 'b', 'c'), null, null, false, false),
-                            46583 => array(array('_route' => '_795'), array('a', 'b', 'c'), null, null, false, false),
-                            46631 => array(array('_route' => '_887'), array('a', 'b', 'c'), null, null, false, false),
-                            46681 => array(array('_route' => '_800'), array('a', 'b', 'c'), null, null, false, false),
-                            46730 => array(array('_route' => '_826'), array('a', 'b', 'c'), null, null, false, false),
-                            46779 => array(array('_route' => '_881'), array('a', 'b', 'c'), null, null, false, false),
-                            46828 => array(array('_route' => '_886'), array('a', 'b', 'c'), null, null, false, false),
-                            46877 => array(array('_route' => '_938'), array('a', 'b', 'c'), null, null, false, false),
-                            46935 => array(array('_route' => '_540'), array('a', 'b', 'c'), null, null, false, false),
-                            46983 => array(array('_route' => '_643'), array('a', 'b', 'c'), null, null, false, false),
-                            47033 => array(array('_route' => '_544'), array('a', 'b', 'c'), null, null, false, false),
-                            47082 => array(array('_route' => '_552'), array('a', 'b', 'c'), null, null, false, false),
-                            47134 => array(array('_route' => '_567'), array('a', 'b', 'c'), null, null, false, false),
-                            47182 => array(array('_route' => '_608'), array('a', 'b', 'c'), null, null, false, false),
-                            47230 => array(array('_route' => '_698'), array('a', 'b', 'c'), null, null, false, false),
-                            47278 => array(array('_route' => '_988'), array('a', 'b', 'c'), null, null, false, false),
-                            47331 => array(array('_route' => '_583'), array('a', 'b', 'c'), null, null, false, false),
-                            47379 => array(array('_route' => '_998'), array('a', 'b', 'c'), null, null, false, false),
-                            47432 => array(array('_route' => '_604'), array('a', 'b', 'c'), null, null, false, false),
-                            47480 => array(array('_route' => '_630'), array('a', 'b', 'c'), null, null, false, false),
-                            47528 => array(array('_route' => '_706'), array('a', 'b', 'c'), null, null, false, false),
-                            47576 => array(array('_route' => '_976'), array('a', 'b', 'c'), null, null, false, false),
-                            47629 => array(array('_route' => '_673'), array('a', 'b', 'c'), null, null, false, false),
-                            47677 => array(array('_route' => '_678'), array('a', 'b', 'c'), null, null, false, false),
-                            47725 => array(array('_route' => '_931'), array('a', 'b', 'c'), null, null, false, false),
-                            47775 => array(array('_route' => '_751'), array('a', 'b', 'c'), null, null, false, false),
-                            47824 => array(array('_route' => '_766'), array('a', 'b', 'c'), null, null, false, false),
-                            47876 => array(array('_route' => '_792'), array('a', 'b', 'c'), null, null, false, false),
-                            47924 => array(array('_route' => '_814'), array('a', 'b', 'c'), null, null, false, false),
-                            47974 => array(array('_route' => '_798'), array('a', 'b', 'c'), null, null, false, false),
-                            48026 => array(array('_route' => '_851'), array('a', 'b', 'c'), null, null, false, false),
-                            48074 => array(array('_route' => '_941'), array('a', 'b', 'c'), null, null, false, false),
-                            48122 => array(array('_route' => '_953'), array('a', 'b', 'c'), null, null, false, false),
-                            48170 => array(array('_route' => '_975'), array('a', 'b', 'c'), null, null, false, false),
-                            48220 => array(array('_route' => '_873'), array('a', 'b', 'c'), null, null, false, false),
-                            48269 => array(array('_route' => '_936'), array('a', 'b', 'c'), null, null, false, false),
-                            48318
10000
 => array(array('_route' => '_994'), array('a', 'b', 'c'), null, null, false, false),
-                            48376 => array(array('_route' => '_562'), array('a', 'b', 'c'), null, null, false, false),
-                            48424 => array(array('_route' => '_770'), array('a', 'b', 'c'), null, null, false, false),
-                            48475 => array(array('_route' => '_774'), array('a', 'b', 'c'), null, null, false, false),
-                            48522 => array(array('_route' => '_966'), array('a', 'b', 'c'), null, null, false, false),
-                            48573 => array(array('_route' => '_582'), array('a', 'b', 'c'), null, null, false, false),
-                            48625 => array(array('_route' => '_606'), array('a', 'b', 'c'), null, null, false, false),
-                            48673 => array(array('_route' => '_648'), array('a', 'b', 'c'), null, null, false, false),
-                            48723 => array(array('_route' => '_624'), array('a', 'b', 'c'), null, null, false, false),
-                            48775 => array(array('_route' => '_626'), array('a', 'b', 'c'), null, null, false, false),
-                            48823 => array(array('_route' => '_821'), array('a', 'b', 'c'), null, null, false, false),
-                            48873 => array(array('_route' => '_628'), array('a', 'b', 'c'), null, null, false, false),
-                            48922 => array(array('_route' => '_638'), array('a', 'b', 'c'), null, null, false, false),
-                            48974 => array(array('_route' => '_640'), array('a', 'b', 'c'), null, null, false, false),
-                            49022 => array(array('_route' => '_990'), array('a', 'b', 'c'), null, null, false, false),
-                            49072 => array(array('_route' => '_705'), array('a', 'b', 'c'), null, null, false, false),
-                            49121 => array(array('_route' => '_757'), array('a', 'b', 'c'), null, null, false, false),
-                            49176 => array(array('_route' => '_785'), array('a', 'b', 'c'), null, null, false, false),
-                            49223 => array(array('_route' => '_875'), array('a', 'b', 'c'), null, null, false, false),
-                            49270 => array(array('_route' => '_894'), array('a', 'b', 'c'), null, null, false, false),
-                            49319 => array(array('_route' => '_945'), array('a', 'b', 'c'), null, null, false, false),
-                            49375 => array(array('_route' => '_816'), array('a', 'b', 'c'), null, null, false, false),
-                            49422 => array(array('_route' => '_872'), array('a', 'b', 'c'), null, null, false, false),
-                            49471 => array(array('_route' => '_921'), array('a', 'b', 'c'), null, null, false, false),
-                            49519 => array(array('_route' => '_960'), array('a', 'b', 'c'), null, null, false, false),
-                            49567 => array(array('_route' => '_974'), array('a', 'b', 'c'), null, null, false, false),
-                            49620 => array(array('_route' => '_835'), array('a', 'b', 'c'), null, null, false, false),
-                            49668 => array(array('_route' => '_934'), array('a', 'b', 'c'), null, null, false, false),
-                            49718 => array(array('_route' => '_869'), array('a', 'b', 'c'), null, null, false, false),
-                        );
+                        $routes = [
+                            54 => [['_route' => '_0'], ['a', 'b', 'c'], null, null, false, false],
+                            102 => [['_route' => '_190'], ['a', 'b', 'c'], null, null, false, false],
+                            147 => [['_route' => '_478'], ['a', 'b', 'c'], null, null, false, false],
+                            194 => [['_route' => '_259'], ['a', 'b', 'c'], null, null, false, false],
+                            240 => [['_route' => '_368'], ['a', 'b', 'c'], null, null, false, false],
+                            291 => [['_route' => '_1'], ['a', 'b', 'c'], null, null, false, false],
+                            337 => [['_route' => '_116'], ['a', 'b', 'c'], null, null, false, false],
+                            383 => [['_route' => '_490'], ['a', 'b', 'c'], null, null, false, false],
+                            434 => [['_route' => '_2'], ['a', 'b', 'c'], null, null, false, false],
+                            480 => [['_route' => '_124'], ['a', 'b', 'c'], null, null, false, false],
+                            526 => [['_route' => '_389'], ['a', 'b', 'c'], null, null, false, false],
+                            577 => [['_route' => '_8'], ['a', 'b', 'c'], null, null, false, false],
+                            623 => [['_route' => '_104'], ['a', 'b', 'c'], null, null, false, false],
+                            677 => [['_route' => '_12'], ['a', 'b', 'c'], null, null, false, false],
+                            722 => [['_route' => '_442'], ['a', 'b', 'c'], null, null, false, false],
+                            769 => [['_route' => '_253'], ['a', 'b', 'c'], null, null, false, false],
+                            820 => [['_route' => '_13'], ['a', 'b', 'c'], null, null, false, false],
+                            866 => [['_route' => '_254'], ['a', 'b', 'c'], null, null, false, false],
+                            912 => [['_route' => '_347'], ['a', 'b', 'c'], null, null, false, false],
+                            963 => [['_route' => '_16'], ['a', 'b', 'c'], null, null, false, false],
+                            1009 => [['_route' => '_87'], ['a', 'b', 'c'], null, null, false, false],
+                            1058 => [['_route' => '_31'], ['a', 'b', 'c'], null, null, false, false],
+                            1109 => [['_route' => '_50'], ['a', 'b', 'c'], null, null, false, false],
+                            1156 => [['_route' => '_219'], ['a', 'b', 'c'], null, null, false, false],
+                            1203 => [['_route' => '_332'], ['a', 'b', 'c'], null, null, false, false],
+                            1250 => [['_route' => '_359'], ['a', 'b', 'c'], null, null, false, false],
+                            1302 => [['_route' => '_183'], ['a', 'b', 'c'], null, null, false, false],
+                            1349 => [['_route' => '_500'], ['a', 'b', 'c'], null, null, false, false],
+                            1401 => [['_route' => '_214'], ['a', 'b', 'c'], null, null, false, false],
+                            1448 => [['_route' => '_321'], ['a', 'b', 'c'], null, null, false, false],
+                            1497 => [['_route' => '_243'], ['a', 'b', 'c'], null, null, false, false],
+                            1545 => [['_route' => '_328'], ['a', 'b', 'c'], null, null, false, false],
+                            1596 => [['_route' => '_362'], ['a', 'b', 'c'], null, null, false, false],
+                            1643 => [['_route' => '_488'], ['a', 'b', 'c'], null, null, false, false],
+                            1701 => [['_route' => '_3'], ['a', 'b', 'c'], null, null, false, false],
+                            1751 => [['_route' => '_102'], ['a', 'b', 'c'], null, null, false, false],
+                            1797 => [['_route' => '_220'], ['a', 'b', 'c'], null, null, false, false],
+                            1845 => [['_route' => '_127'], ['a', 'b', 'c'], null, null, false, false],
+                            1897 => [['_route' => '_5'], ['a', 'b', 'c'], null, null, false, false],
+                            1944 => [['_route' => '_242'], ['a', 'b', 'c'], null, null, false, false],
+                            1991 => [['_route' => '_397'], ['a', 'b', 'c'], null, null, false, false],
+                            2038 => [['_route' => '_454'], ['a', 'b', 'c'], null, null, false, false],
+                            2090 => [['_route' => '_34'], ['a', 'b', 'c'], null, null, false, false],
+                            2137 => [['_route' => '_281'], ['a', 'b', 'c'], null, null, false, false],
+                            2189 => [['_route' => '_64'], ['a', 'b', 'c'], null, null, false, false],
+                            2236 => [['_route' => '_205'], ['a', 'b', 'c'], null, null, false, false],
+                            2291 => [['_route' => '_71'], ['a', 'b', 'c'], null, null, false, false],
+                            2337 => [['_route' => '_203'], ['a', 'b', 'c'], null, null, false, false],
+                            2385 => [['_route' => '_97'], ['a', 'b', 'c'], null, null, false, false],
+                            2437 => [['_route' => '_98'], ['a', 'b', 'c'], null, null, false, false],
+                            2484 => [['_route' => '_267'], ['a', 'b', 'c'], null, null, false, false],
+                            2531 => [['_route' => '_309'], ['a', 'b', 'c'], null, null, false, false],
+                            2586 => [['_route' => '_117'], ['a', 'b', 'c'], null, null, false, false],
+                            2631 => [['_route' => '_211'], ['a', 'b', 'c'], null, null, false, false],
+                            2679 => [['_route' => '_484'], ['a', 'b', 'c'], null, null, false, false],
+                            2731 => [['_route' => '_139'], ['a', 'b', 'c'], null, null, false, false],
+                            2778 => [['_route' => '_421'], ['a', 'b', 'c'], null, null, false, false],
+                            2830 => [['_route' => '_185'], ['a', 'b', 'c'], null, null, false, false],
+                            2877 => [['_route' => '_439'], ['a', 'b', 'c'], null, null, false, false],
+                            2926 => [['_route' => '_218'], ['a', 'b', 'c'], null, null, false, false],
+                            2977 => [['_route' => '_233'], ['a', 'b', 'c'], null, null, false, false],
+                            3024 => [['_route' => '_483'], ['a', 'b', 'c'], null, null, false, false],
+                            3073 => [['_route' => '_265'], ['a', 'b', 'c'], null, null, false, false],
+                            3124 => [['_route' => '_299'], ['a', 'b', 'c'], null, null, false, false],
+                            3171 => [['_route' => '_351'], ['a', 'b', 'c'], null, null, false, false],
+                            3218 => [['_route' => '_472'], ['a', 'b', 'c'], null, null, false, false],
+                            3267 => [['_route' => '_360'], ['a', 'b', 'c'], null, null, false, false],
+                            3315 => [['_route' => '_466'], ['a', 'b', 'c'], null, null, false, false],
+                            3372 => [['_route' => '_4'], ['a', 'b', 'c'], null, null, false, false],
+                            3419 => [['_route' => '_142'], ['a', 'b', 'c'], null, null, false, false],
+                            3466 => [['_route' => '_151'], ['a', 'b', 'c'], null, null, false, false],
+                            3513 => [['_route' => '_308'], ['a', 'b', 'c'], null, null, false, false],
+                            3560 => [['_route' => '_440'], ['a', 'b', 'c'], null, null, false, false],
+                            3612 => [['_route' => '_14'], ['a', 'b', 'c'], null, null, false, false],
+                            3659 => [['_route' => '_358'], ['a', 'b', 'c'], null, null, false, false],
+                            3711 => [['_route' => '_37'], ['a', 'b', 'c'], null, null, false, false],
+                            3758 => [['_route' => '_38'], ['a', 'b', 'c'], null, null, false, false],
+                            3805 => [['_route' => '_146'], ['a', 'b', 'c'], null, null, false, false],
+                            3852 => [['_route' => '_194'], ['a', 'b', 'c'], null, null, false, false],
+                            3899 => [['_route' => '_487'], ['a', 'b', 'c'], null, null, false, false],
+                            3948 => [['_route' => '_42'], ['a', 'b', 'c'], null, null, false, false],
+                            3999 => [['_route' => '_54'], ['a', 'b', 'c'], null, null, false, false],
+                            4046 => [['_route' => '_326'], ['a', 'b', 'c'], null, null, false, false],
+                            4098 => [['_route' => '_68'], ['a', 'b', 'c'], null, null, false, false],
+                            4145 => [['_route' => '_108'], ['a', 'b', 'c'], null, null, false, false],
+                            4197 => [['_route' => '_74'], ['a', 'b', 'c'], null, null, false, false],
+                            4244 => [['_route' => '_315'], ['a', 'b', 'c'], null, null, false, false],
+                            4291 => [['_route' => '_374'], ['a', 'b', 'c'], null, null, false, false],
+                            4343 => [['_route' => '_99'], ['a', 'b', 'c'], null, null, false, false],
+                            4390 => [['_route' => '_238'], ['a', 'b', 'c'], null, null, false, false],
+                            4442 => [['_route' => '_107'], ['a', 'b', 'c'], null, null, false, false],
+                            4489 => [['_route' => '_409'], ['a', 'b', 'c'], null, null, false, false],
+                            4541 => [['_route' => '_122'], ['a', 'b', 'c'], null, null, false, false],
+                            4588 => [['_route' => '_379'], ['a', 'b', 'c'], null, null, false, false],
+                            4635 => [['_route' => '_390'], ['a', 'b', 'c'], null, null, false, false],
+                            4687 => [['_route' => '_171'], ['a', 'b', 'c'], null, null, false, false],
+                            4734 => [['_route' => '_260'], ['a', 'b', 'c'], null, null, false, false],
+                            4781 => [['_route' => '_434'], ['a', 'b', 'c'], null, null, false, false],
+                            4830 => [['_route' => '_189'], ['a', 'b', 'c'], null, null, false, false],
+                            4878 => [['_route' => '_467'], ['a', 'b', 'c'], null, null, false, false],
+                            4935 => [['_route' => '_6'], ['a', 'b', 'c'], null, null, false, false],
+                            4982 => [['_route' => '_286'], ['a', 'b', 'c'], null, null, false, false],
+                            5029 => [['_route' => '_438'], ['a', 'b', 'c'], null, null, false, false],
+                            5081 => [['_route' => '_19'], ['a', 'b', 'c'], null, null, false, false],
+                            5131 => [['_route' => '_24'], ['a', 'b', 'c'], null, null, false, false],
+                            5177 => [['_route' => '_172'], ['a', 'b', 'c'], null, null, false, false],
+                            5230 => [['_route' => '_33'], ['a', 'b', 'c'], null, null, false, false],
+                            5277 => [['_route' => '_400'], ['a', 'b', 'c'], null, null, false, false],
+                            5324 => [['_route' => '_427'], ['a', 'b', 'c'], null, null, false, false],
+                            5376 => [['_route' => '_35'], ['a', 'b', 'c'], null, null, false, false],
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+                            40932 => [['_route' => '_547'], ['a', 'b', 'c'], null, null, false, false],
+                            40987 => [['_route' => '_549'], ['a', 'b', 'c'], null, null, false, false],
+                            41034 => [['_route' => '_755'], ['a', 'b', 'c'], null, null, false, false],
+                            41083 => [['_route' => '_922'], ['a', 'b', 'c'], null, null, false, false],
+                            41131 => [['_route' => '_977'], ['a', 'b', 'c'], null, null, false, false],
+                            41184 => [['_route' => '_565'], ['a', 'b', 'c'], null, null, false, false],
+                            41232 => [['_route' => '_926'], ['a', 'b', 'c'], null, null, false, false],
+                            41282 => [['_route' => '_571'], ['a', 'b', 'c'], null, null, false, false],
+                            41331 => [['_route' => '_581'], ['a', 'b', 'c'], null, null, false, false],
+                            41380 => [['_route' => '_619'], ['a', 'b', 'c'], null, null, false, false],
+                            41429 => [['_route' => '_636'], ['a', 'b', 'c'], null, null, false, false],
+                            41481 => [['_route' => '_679'], ['a', 'b', 'c'], null, null, false, false],
+                            41529 => [['_route' => '_866'], ['a', 'b', 'c'], null, null, false, false],
+                            41577 => [['_route' => '_973'], ['a', 'b', 'c'], null, null, false, false],
+                            41630 => [['_route' => '_690'], ['a', 'b', 'c'], null, null, false, false],
+                            41678 => [['_route' => '_775'], ['a', 'b', 'c'], null, null, false, false],
+                            41731 => [['_route' => '_722'], ['a', 'b', 'c'], null, null, false, false],
+                            41779 => [['_route' => '_906'], ['a', 'b', 'c'], null, null, false, false],
+                            41827 => [['_route' => '_946'], ['a', 'b', 'c'], null, null, false, false],
+                            41877 => [['_route' => '_788'], ['a', 'b', 'c'], null, null, false, false],
+                            41929 => [['_route' => '_828'], ['a', 'b', 'c'], null, null, false, false],
+                            41977 => [['_route' => '_892'], ['a', 'b', 'c'], null, null, false, false],
+                            42025 => [['_route' => '_972'], ['a', 'b', 'c'], null, null, false, false],
+                            42075 => [['_route' => '_829'], ['a', 'b', 'c'], null, null, false, false],
+                            42127 => [['_route' => '_923'], ['a', 'b', 'c'], null, null, false, false],
+                            42175 => [['_route' => '_947'], ['a', 'b', 'c'], null, null, false, false],
+                            42234 => [['_route' => '_526'], ['a', 'b', 'c'], null, null, false, false],
+                            42282 => [['_route' => '_614'], ['a', 'b', 'c'], null, null, false, false],
+                            42330 => [['_route' => '_621'], ['a', 'b', 'c'], null, null, false, false],
+                            42383 => [['_route' => '_543'], ['a', 'b', 'c'], null, null, false, false],
+                            42431 => [['_route' => '_812'], ['a', 'b', 'c'], null, null, false, false],
+                            42487 => [['_route' => '_548'], ['a', 'b', 'c'], null, null, false, false],
+                            42534 => [['_route' => '_747'], ['a', 'b', 'c'], null, null, false, false],
+                            42583 => [['_route' => '_715'], ['a', 'b', 'c'], null, null, false, false],
+                            42631 => [['_route' => '_940'], ['a', 'b', 'c'], null, null, false, false],
+                            42684 => [['_route' => '_563'], ['a', 'b', 'c'], null, null, false, false],
+                            42732 => [['_route' => '_611'], ['a', 'b', 'c'], null, null, false, false],
+                            42780 => [['_route' => '_830'], ['a', 'b', 'c'], null, null, false, false],
+                            42833 => [['_route' => '_569'], ['a', 'b', 'c'], null, null, false, false],
+                            42881 => [['_route' => '_908'], ['a', 'b', 'c'], null, null, false, false],
+                            42929 => [['_route' => '_913'], ['a', 'b', 'c'], null, null, false, false],
+                            42982 => [['_route' => '_644'], ['a', 'b', 'c'], null, null, false, false],
+                            43030 => [['_route' => '_776'], ['a', 'b', 'c'], null, null, false, false],
+                            43078 => [['_route' => '_856'], ['a', 'b', 'c'], null, null, false, false],
+                            43131 => [['_route' => '_650'], ['a', 'b', 'c'], null, null, false, false],
+                            43179 => [['_route' => '_761'], ['a', 'b', 'c'], null, null, false, false],
+                            43232 => [['_route' => '_663'], ['a', 'b', 'c'], null, null, false, false],
+                            43280 => [['_route' => '_754'], ['a', 'b', 'c'], null, null, false, false],
+                            43333 => [['_route' => '_665'], ['a', 'b', 'c'], null, null, false, false],
+                            43381 => [['_route' => '_805'], ['a', 'b', 'c'], null, null, false, false],
+                            43429 => [['_route' => '_846'], ['a', 'b', 'c'], null, null, false, false],
+                            43477 => [['_route' => '_857'], ['a', 'b', 'c'], null, null, false, false],
+                            43530 => [['_route' => '_675'], ['a', 'b', 'c'], null, null, false, false],
+                            43578 => [['_route' => '_839'], ['a', 'b', 'c'], null, null, false, false],
+                            43626 => [['_route' => '_968'], ['a', 'b', 'c'], null, null, false, false],
+                            43676 => [['_route' => '_697'], ['a', 'b', 'c'], null, null, false, false],
+                            43728 => [['_route' => '_725'], ['a', 'b', 'c'], null, null, false, false],
+                            43776 => [['_route' => '_794'], ['a', 'b', 'c'], null, null, false, false],
+                            43829 => [['_route' => '_773'], ['a', 'b', 'c'], null, null, false, false],
+                            43877 => [['_route' => '_992'], ['a', 'b', 'c'], null, null, false, false],
+                            43930 => [['_route' => '_901'], ['a', 'b', 'c'], null, null, false, false],
+                            43978 => [['_route' => '_970'], ['a', 'b', 'c'], null, null, false, false],
+                            44028 => [['_route' => '_964'], ['a', 'b', 'c'], null, null, false, false],
+                            44086 => [['_route' => '_530'], ['a', 'b', 'c'], null, null, false, false],
+                            44134 => [['_route' => '_703'], ['a', 'b', 'c'], null, null, false, false],
+                            44187 => [['_route' => '_533'], ['a', 'b', 'c'], null, null, false, false],
+                            44235 => [['_route' => '_739'], ['a', 'b', 'c'], null, null, false, false],
+                            44283 => [['_route' => '_791'], ['a', 'b', 'c'], null, null, false, false],
+                            44331 => [['_route' => '_987'], ['a', 'b', 'c'], null, null, false, false],
+                            44384 => [['_route' => '_566'], ['a', 'b', 'c'], null, null, false, false],
+                            44432 => [['_route' => '_592'], ['a', 'b', 'c'], null, null, false, false],
+                            44488 => [['_route' => '_568'], ['a', 'b', 'c'], null, null, false, false],
+                            44534 => [['_route' => '_868'], ['a', 'b', 'c'], null, null, false, false],
+                            44583 => [['_route' => '_878'], ['a', 'b', 'c'], null, null, false, false],
+                            44636 => [['_route' => '_588'], ['a', 'b', 'c'], null, null, false, false],
+                            44684 => [['_route' => '_793'], ['a', 'b', 'c'], null, null, false, false],
+                            44732 => [['_route' => '_917'], ['a', 'b', 'c'], null, null, false, false],
+                            44785 => [['_route' => '_600'], ['a', 'b', 'c'], null, null, false, false],
+                            44833 => [['_route' => '_728'], ['a', 'b', 'c'], null, null, false, false],
+                            44886 => [['_route' => '_603'], ['a', 'b', 'c'], null, null, false, false],
+                            44934 => [['_route' => '_765'], ['a', 'b', 'c'], null, null, false, false],
+                            44987 => [['_route' => '_607'], ['a', 'b', 'c'], null, null, false, false],
+                            45035 => [['_route' => '_676'], ['a', 'b', 'c'], null, null, false, false],
+                            45083 => [['_route' => '_804'], ['a', 'b', 'c'], null, null, false, false],
+                            45136 => [['_route' => '_609'], ['a', 'b', 'c'], null, null, false, false],
+                            45184 => [['_route' => '_961'], ['a', 'b', 'c'], null, null, false, false],
+                            45232 => [['_route' => '_980'], ['a', 'b', 'c'], null, null, false, false],
+                            45282 => [['_route' => '_714'], ['a', 'b', 'c'], null, null, false, false],
+                            45334 => [['_route' => '_730'], ['a', 'b', 'c'], null, null, false, false],
+                            45382 => [['_route' => '_806'], ['a', 'b', 'c'], null, null, false, false],
+                            45430 => [['_route' => '_825'], ['a', 'b', 'c'], null, null, false, false],
+                            45478 => [['_route' => '_879'], ['a', 'b', 'c'], null, null, false, false],
+                            45526 => [['_route' => '_893'], ['a', 'b', 'c'], null, null, false, false],
+                            45576 => [['_route' => '_928'], ['a', 'b', 'c'], null, null, false, false],
+                            45628 => [['_route' => '_932'], ['a', 'b', 'c'], null, null, false, false],
+                            45676 => [['_route' => '_958'], ['a', 'b', 'c'], null, null, false, false],
+                            45726 => [['_route' => '_984'], ['a', 'b', 'c'], null, null, false, false],
+                            45784 => [['_route' => '_538'], ['a', 'b', 'c'], null, null, false, false],
+                            45832 => [['_route' => '_993'], ['a', 'b', 'c'], null, null, false, false],
+                            45882 => [['_route' => '_542'], ['a', 'b', 'c'], null, null, false, false],
+                            45934 => [['_route' => '_551'], ['a', 'b', 'c'], null, null, false, false],
+                            45982 => [['_route' => '_687'], ['a', 'b', 'c'], null, null, false, false],
+                            46030 => [['_route' => '_724'], ['a', 'b', 'c'], null, null, false, false],
+                            46078 => [['_route' => '_925'], ['a', 'b', 'c'], null, null, false, false],
+                            46131 => [['_route' => '_587'], ['a', 'b', 'c'], null, null, false, false],
+                            46179 => [['_route' => '_914'], ['a', 'b', 'c'], null, null, false, false],
+                            46229 => [['_route' => '_616'], ['a', 'b', 'c'], null, null, false, false],
+                            46284 => [['_route' => '_677'], ['a', 'b', 'c'], null, null, false, false],
+                            46331 => [['_route' => '_815'], ['a', 'b', 'c'], null, null, false, false],
+                            46380 => [['_route' => '_781'], ['a', 'b', 'c'], null, null, false, false],
+                            46430 => [['_route' => '_717'], ['a', 'b', 'c'], null, null, false, false],
+                            46482 => [['_route' => '_782'], ['a', 'b', 'c'], null, null, false, false],
+                            46530 => [['_route' => '_832'], ['a', 'b', 'c'], null, null, false, false],
+                            46583 => [['_route' => '_795'], ['a', 'b', 'c'], null, null, false, false],
+                            46631 => [['_route' => '_887'], ['a', 'b', 'c'], null, null, false, false],
+                            46681 => [['_route' => '_800'], ['a', 'b', 'c'], null, null, false, false],
+                            46730 => [['_route' => '_826'], ['a', 'b', 'c'], null, null, false, false],
+                            46779 => [['_route' => '_881'], ['a', 'b', 'c'], null, null, false, false],
+                            46828 => [['_route' => '_886'], ['a', 'b', 'c'], null, null, false, false],
+                            46877 => [['_route' => '_938'], ['a', 'b', 'c'], null, null, false, false],
+                            46935 => [['_route' => '_540'], ['a', 'b', 'c'], null, null, false, false],
+                            46983 => [['_route' => '_643'], ['a', 'b', 'c'], null, null, false, false],
+                            47033 => [['_route' => '_544'], ['a', 'b', 'c'], null, null, false, false],
+                            47082 => [['_route' => '_552'], ['a', 'b', 'c'], null, null, false, false],
+                            47134 => [['_route' => '_567'], ['a', 'b', 'c'], null, null, false, false],
+                            47182 => [['_route' => '_608'], ['a', 'b', 'c'], null, null, false, false],
+                            47230 => [['_route' => '_698'], ['a', 'b', 'c'], null, null, false, false],
+                            47278 => [['_route' => '_988'], ['a', 'b', 'c'], null, null, false, false],
+                            47331 => [['_route' => '_583'], ['a', 'b', 'c'], null, null, false, false],
+                            47379 => [['_route' => '_998'], ['a', 'b', 'c'], null, null, false, false],
+                            47432 => [['_route' => '_604'], ['a', 'b', 'c'], null, null, false, false],
+                            47480 => [['_route' => '_630'], ['a', 'b', 'c'], null, null, false, false],
+                            47528 => [['_route' => '_706'], ['a', 'b', 'c'], null, null, false, false],
+                            47576 => [['_route' => '_976'], ['a', 'b', 'c'], null, null, false, false],
+                            47629 => [['_route' => '_673'], ['a', 'b', 'c'], null, null, false, false],
+                            47677 => [['_route' => '_678'], ['a', 'b', 'c'], null, null, false, false],
+                            47725 => [['_route' => '_931'], ['a', 'b', 'c'], null, null, false, false],
+                            47775 => [['_route' => '_751'], ['a', 'b', 'c'], null, null, false, false],
+                            47824 => [['_route' => '_766'], ['a', 'b', 'c'], null, null, false, false],
+                            47876 => [['_route' => '_792'], ['a', 'b', 'c'], null, null, false, false],
+                            47924 => [['_route' => '_814'], ['a', 'b', 'c'], null, null, false, false],
+                            47974 => [['_route' => '_798'], ['a', 'b', 'c'], null, null, false, false],
+                            48026 => [['_route' => '_851'], ['a', 'b', 'c'], null, null, false, false],
+                            48074 => [['_route' => '_941'], ['a', 'b', 'c'], null, null, false, false],
+                            48122 => [['_route' => '_953'], ['a', 'b', 'c'], null, null, false, false],
+                            48170 => [['_route' => '_975'], ['a', 'b', 'c'], null, null, false, false],
+                            48220 => [['_route' => '_873'], ['a', 'b', 'c'], null, null, false, false],
+                            48269 => [['_route' => '_936'], ['a', 'b', 'c'], null, null, false, false],
+                            48318 => [['_route' => '_994'], ['a', 'b', 'c'], null, null, false, false],
+                            48376 => [['_route' => '_562'], ['a', 'b', 'c'], null, null, false, false],
+                            48424 => [['_route' => '_770'], ['a', 'b', 'c'], null, null, false, false],
+                            48475 => [['_route' => '_774'], ['a', 'b', 'c'], null, null, false, false],
+                            48522 => [['_route' => '_966'], ['a', 'b', 'c'], null, null, false, false],
+                            48573 => [['_route' => '_582'], ['a', 'b', 'c'], null, null, false, false],
+                            48625 => [['_route' => '_606'], ['a', 'b', 'c'], null, null, false, false],
+                            48673 => [['_route' => '_648'], ['a', 'b', 'c'], null, null, false, false],
+                            48723 => [['_route' => '_624'], ['a', 'b', 'c'], null, null, false, false],
+                            48775 => [['_route' => '_626'], ['a', 'b', 'c'], null, null, false, false],
+                            48823 => [['_route' => '_821'], ['a', 'b', 'c'], null, null, false, false],
+                            48873 => [['_route' => '_628'], ['a', 'b', 'c'], null, null, false, false],
+                            48922 => [['_route' => '_638'], ['a', 'b', 'c'], null, null, false, false],
+                            48974 => [['_route' => '_640'], ['a', 'b', 'c'], null, null, false, false],
+                            49022 => [['_route' => '_990'], ['a', 'b', 'c'], null, null, false, false],
+                            49072 => [['_route' => '_705'], ['a', 'b', 'c'], null, null, false, false],
+                            49121 => [['_route' => '_757'], ['a', 'b', 'c'], null, null, false, false],
+                            49176 => [['_route' => '_785'], ['a', 'b', 'c'], null, null, false, false],
+                            49223 => [['_route' => '_875'], ['a', 'b', 'c'], null, null, false, false],
+                            49270 => [['_route' => '_894'], ['a', 'b', 'c'], null, null, false, false],
+                            49319 => [['_route' => '_945'], ['a', 'b', 'c'], null, null, false, false],
+                            49375 => [['_route' => '_816'], ['a', 'b', 'c'], null, null, false, false],
+                            49422 => [['_route' => '_872'], ['a', 'b', 'c'], null, null, false, false],
+                            49471 => [['_route' => '_921'], ['a', 'b', 'c'], null, null, false, false],
+                            49519 => [['_route' => '_960'], ['a', 'b', 'c'], null, null, false, false],
+                            49567 => [['_route' => '_974'], ['a', 'b', 'c'], null, null, false, false],
+                            49620 => [['_route' => '_835'], ['a', 'b', 'c'], null, null, false, false],
+                            49668 => [['_route' => '_934'], ['a', 'b', 'c'], null, null, false, false],
+                            49718 => [['_route' => '_869'], ['a', 'b', 'c'], null, null, false, false],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
index 146ec99281fc..1a4f549d09bb 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
@@ -17,14 +17,14 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         if ($ret = $this->doMatch($pathinfo, $allow, $allowSchemes)) {
             return $ret;
         }
         if ($allow) {
             throw new MethodNotAllowedException(array_keys($allow));
         }
-        if (!in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+        if (!in_array($this->context->getMethod(), ['HEAD', 'GET'], true)) {
             // no-op
         } elseif ($allowSchemes) {
             redirect_scheme:
@@ -50,9 +50,9 @@ public function match($pathinfo)
         throw new ResourceNotFoundException();
     }
 
-    private function doMatch(string $pathinfo, array &$allow = array(), array &$allowSchemes = array()): array
+    private function doMatch(string $pathinfo, array &$allow = [], array &$allowSchemes = []): array
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -63,7 +63,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
         }
 
         $matchedPathinfo = $pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                     .'|/(en|fr)/(?'
                         .'|admin/post(?'
@@ -94,28 +94,28 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                     .')'
                     .'|/(en|fr)?(*:264)'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
                 switch ($m = (int) $matches['MARK']) {
                     default:
-                        $routes = array(
-                            32 => array(array('_route' => 'a', '_locale' => 'en'), array('_locale'), null, null, true, false),
-                            46 => array(array('_route' => 'b', '_locale' => 'en'), array('_locale'), null, null, false, false),
-                            58 => array(array('_route' => 'c', '_locale' => 'en'), array('_locale', 'id'), null, null, false, true),
-                            75 => array(array('_route' => 'd', '_locale' => 'en'), array('_locale', 'id'), null, null, false, false),
-                            94 => array(array('_route' => 'e', '_locale' => 'en'), array('_locale', 'id'), null, null, false, false),
-                            110 => array(array('_route' => 'f', '_locale' => 'en'), array('_locale'), null, null, true, false),
-                            130 => array(array('_route' => 'g', '_locale' => 'en'), array('_locale'), null, null, false, false),
-                            154 => array(array('_route' => 'h', '_locale' => 'en'), array('_locale', 'page'), null, null, false, true),
-                            175 => array(array('_route' => 'i', '_locale' => 'en'), array('_locale', 'page'), null, null, false, true),
-                            202 => array(array('_route' => 'j', '_locale' => 'en'), array('_locale', 'id'), null, null, false, false),
-                            216 => array(array('_route' => 'k', '_locale' => 'en'), array('_locale'), null, null, false, false),
-                            234 => array(array('_route' => 'l', '_locale' => 'en'), array('_locale'), null, null, false, false),
-                            245 => array(array('_route' => 'm', '_locale' => 'en'), array('_locale'), null, null, false, false),
-                            264 => array(array('_route' => 'n', '_locale' => 'en'), array('_locale'), null, null, false, true),
-                        );
+                        $routes = [
+                            32 => [['_route' => 'a', '_locale' => 'en'], ['_locale'], null, null, true, false],
+                            46 => [['_route' => 'b', '_locale' => 'en'], ['_locale'], null, null, false, false],
+                            58 => [['_route' => 'c', '_locale' => 'en'], ['_locale', 'id'], null, null, false, true],
+                            75 => [['_route' => 'd', '_locale' => 'en'], ['_locale', 'id'], null, null, false, false],
+                            94 => [['_route' => 'e', '_locale' => 'en'], ['_locale', 'id'], null, null, false, false],
+                            110 => [['_route' => 'f', '_locale' => 'en'], ['_locale'], null, null, true, false],
+                            130 => [['_route' => 'g', '_locale' => 'en'], ['_locale'], null, null, false, false],
+                            154 => [['_route' => 'h', '_locale' => 'en'], ['_locale', 'page'], null, null, false, true],
+                            175 => [['_route' => 'i', '_locale' => 'en'], ['_locale', 'page'], null, null, false, true],
+                            202 => [['_route' => 'j', '_locale' => 'en'], ['_locale', 'id'], null, null, false, false],
+                            216 => [['_route' => 'k', '_locale' => 'en'], ['_locale'], null, null, false, false],
+                            234 => [['_route' => 'l', '_locale' => 'en'], ['_locale'], null, null, false, false],
+                            245 => [['_route' => 'm', '_locale' => 'en'], ['_locale'], null, null, false, false],
+                            264 => [['_route' => 'n', '_locale' => 'en'], ['_locale'], null, null, false, true],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
@@ -128,7 +128,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                         }
                         if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                                return $allow = $allowSchemes = array();
+                                return $allow = $allowSchemes = [];
                             }
                             if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
                                 break;
@@ -167,6 +167,6 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
             throw new Symfony\Component\Routing\Exception\NoConfigurationException();
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
index d1d847e46b5f..5ffc0c1b48cd 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -28,7 +28,7 @@ public function match($pathinfo)
         }
 
         $matchedPathinfo = $pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                     .'|/abc([^/]++)/(?'
                         .'|1(?'
@@ -47,20 +47,20 @@ public function match($pathinfo)
                         .')'
                     .')'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
                 switch ($m = (int) $matches['MARK']) {
                     default:
-                        $routes = array(
-                            27 => array(array('_route' => 'r1'), array('foo'), null, null, false, false),
-                            38 => array(array('_route' => 'r10'), array('foo'), null, null, false, false),
-                            46 => array(array('_route' => 'r100'), array('foo'), null, null, false, false),
-                            59 => array(array('_route' => 'r2'), array('foo'), null, null, false, false),
-                            70 => array(array('_route' => 'r20'), array('foo'), null, null, false, false),
-                            78 => array(array('_route' => 'r200'), array('foo'), null, null, false, false),
-                        );
+                        $routes = [
+                            27 => [['_route' => 'r1'], ['foo'], null, null, false, false],
+                            38 => [['_route' => 'r10'], ['foo'], null, null, false, false],
+                            46 => [['_route' => 'r100'], ['foo'], null, null, false, false],
+                            59 => [['_route' => 'r2'], ['foo'], null, null, false, false],
+                            70 => [['_route' => 'r20'], ['foo'], null, null, false, false],
+                            78 => [['_route' => 'r200'], ['foo'], null, null, false, false],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
index 551b7e93411f..e4b78e01dbdf 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -29,7 +29,7 @@ public function match($pathinfo)
         }
 
         $matchedPathinfo = $host.'.'.$pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                 .'|(?i:([^\\.]++)\\.exampple\\.com)\\.(?'
                     .'|/abc([^/]++)(?'
@@ -37,7 +37,7 @@ public function match($pathinfo)
                     .')'
                 .')'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
@@ -52,9 +52,9 @@ public function match($pathinfo)
                             goto not_r1;
                         }
 
-                        $matches = array('foo' => $matches[1] ?? null, 'foo' => $matches[2] ?? null);
+                        $matches = ['foo' => $matches[1] ?? null, 'foo' => $matches[2] ?? null];
 
-                        return $this->mergeDefaults(array('_route' => 'r1') + $matches, array());
+                        return $this->mergeDefaults(['_route' => 'r1'] + $matches, []);
                         not_r1:
 
                         // r2
@@ -66,7 +66,7 @@ public function match($pathinfo)
                             goto not_r2;
                         }
 
-                        return $this->mergeDefaults(array('_route' => 'r2') + $matches, array());
+                        return $this->mergeDefaults(['_route' => 'r2'] + $matches, []);
                         not_r2:
 
                         break;
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
index 81649f72c92c..3426b358cbf7 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
@@ -17,14 +17,14 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         if ($ret = $this->doMatch($pathinfo, $allow, $allowSchemes)) {
             return $ret;
         }
         if ($allow) {
             throw new MethodNotAllowedException(array_keys($allow));
         }
-        if (!in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+        if (!in_array($this->context->getMethod(), ['HEAD', 'GET'], true)) {
             // no-op
         } elseif ($allowSchemes) {
             redirect_scheme:
@@ -50,9 +50,9 @@ public function match($pathinfo)
         throw new ResourceNotFoundException();
     }
 
-    private function doMatch(string $pathinfo, array &$allow = array(), array &$allowSchemes = array()): array
+    private function doMatch(string $pathinfo, array &$allow = [], array &$allowSchemes = []): array
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -65,27 +65,27 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
 
         switch ($trimmedPathinfo) {
             default:
-                $routes = array(
-                    '/test/baz' => array(array('_route' => 'baz'), null, null, null, false),
-                    '/test/baz.html' => array(array('_route' => 'baz2'), null, null, null, false),
-                    '/test/baz3' => array(array('_route' => 'baz3'), null, null, null, true),
-                    '/foofoo' => array(array('_route' => 'foofoo', 'def' => 'test'), null, null, null, false),
-                    '/spa ce' => array(array('_route' => 'space'), null, null, null, false),
-                    '/multi/new' => array(array('_route' => 'overridden2'), null, null, null, false),
-                    '/multi/hey' => array(array('_route' => 'hey'), null, null, null, true),
-                    '/ababa' => array(array('_route' => 'ababa'), null, null, null, false),
-                    '/route1' => array(array('_route' => 'route1'), 'a.example.com', null, null, false),
-                    '/c2/route2' => array(array('_route' => 'route2'), 'a.example.com', null, null, false),
-                    '/route4' => array(array('_route' => 'route4'), 'a.example.com', null, null, false),
-                    '/c2/route3' => array(array('_route' => 'route3'), 'b.example.com', null, null, false),
-                    '/route5' => array(array('_route' => 'route5'), 'c.example.com', null, null, false),
-                    '/route6' => array(array('_route' => 'route6'), null, null, null, false),
-                    '/route11' => array(array('_route' => 'route11'), '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false),
-                    '/route12' => array(array('_route' => 'route12', 'var1' => 'val'), '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false),
-                    '/route17' => array(array('_route' => 'route17'), null, null, null, false),
-                    '/secure' => array(array('_route' => 'secure'), null, null, array('https' => 0), false),
-                    '/nonsecure' => array(array('_route' => 'nonsecure'), null, null, array('http' => 0), false),
-                );
+                $routes = [
+                    '/test/baz' => [['_route' => 'baz'], null, null, null, false],
+                    '/test/baz.html' => [['_route' => 'baz2'], null, null, null, false],
+                    '/test/baz3' => [['_route' => 'baz3'], null, null, null, true],
+                    '/foofoo' => [['_route' => 'foofoo', 'def' => 'test'], null, null, null, false],
+                    '/spa ce' => [['_route' => 'space'], null, null, null, false],
+                    '/multi/new' => [['_route' => 'overridden2'], null, null, null, false],
+                    '/multi/hey' => [['_route' => 'hey'], null, null, null, true],
+                    '/ababa' => [['_route' => 'ababa'], null, null, null, false],
+                    '/route1' => [['_route' => 'route1'], 'a.example.com', null, null, false],
+                    '/c2/route2' => [['_route' => 'route2'], 'a.example.com', null, null, false],
+                    '/route4' => [['_route' => 'route4'], 'a.example.com', null, null, false],
+                    '/c2/route3' => [['_route' => 'route3'], 'b.example.com', null, null, false],
+                    '/route5' => [['_route' => 'route5'], 'c.example.com', null, null, false],
+                    '/route6' => [['_route' => 'route6'], null, null, null, false],
+                    '/route11' => [['_route' => 'route11'], '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false],
+                    '/route12' => [['_route' => 'route12', 'var1' => 'val'], '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false],
+                    '/route17' => [['_route' => 'route17'], null, null, null, false],
+                    '/secure' => [['_route' => 'secure'], null, null, ['https' => 0], false],
+                    '/nonsecure' => [['_route' => 'nonsecure'], null, null, ['http' => 0], false],
+                ];
 
                 if (!isset($routes[$trimmedPathinfo])) {
                     break;
@@ -93,7 +93,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                 list($ret, $requiredHost, $requiredMethods, $requiredSchemes, $hasTrailingSlash) = $routes[$trimmedPathinfo];
                 if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                     if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                        return $allow = $allowSchemes = array();
+                        return $allow = $allowSchemes = [];
                     }
                     break;
                 }
@@ -124,7 +124,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
         }
 
         $matchedPathinfo = $host.'.'.$pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                 .'|(?:(?:[^./]*+\\.)++)(?'
                     .'|/foo/(baz|symfony)(*:47)'
@@ -171,7 +171,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                     .')'
                 .')'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
@@ -180,7 +180,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                         // baz4
                         if ('/' !== $pathinfo && $trimmedPathinfo === $pathinfo) {
                             if ('GET' === $canonicalMethod) {
-                                return $allow = $allowSchemes = array();
+                                return $allow = $allowSchemes = [];
                             }
                             goto not_baz4;
                         }
@@ -188,9 +188,9 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                             $matches = $n;
                         }
 
-                        $matches = array('foo' => $matches[1] ?? null);
+                        $matches = ['foo' => $matches[1] ?? null];
 
-                        return $this->mergeDefaults(array('_route' => 'baz4') + $matches, array());
+                        return $this->mergeDefaults(['_route' => 'baz4'] + $matches, []);
                         not_baz4:
 
                         // baz5
@@ -201,8 +201,8 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                             $matches = $n;
                         }
 
-                        $ret = $this->mergeDefaults(array('_route' => 'baz5') + $matches, array());
-                        if (!isset(($a = array('POST' => 0))[$requestMethod])) {
+                        $ret = $this->mergeDefaults(['_route' => 'baz5'] + $matches, []);
+                        if (!isset(($a = ['POST' => 0])[$requestMethod])) {
                             $allow += $a;
                             goto not_baz5;
                         }
@@ -218,8 +218,8 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                             $matches = $n;
                         }
 
-                        $ret = $this->mergeDefaults(array('_route' => 'baz.baz6') + $matches, array());
-                        if (!isset(($a = array('PUT' => 0))[$requestMethod])) {
+                        $ret = $this->mergeDefaults(['_route' => 'baz.baz6'] + $matches, []);
+                        if (!isset(($a = ['PUT' => 0])[$requestMethod])) {
                             $allow += $a;
                             goto not_bazbaz6;
                         }
@@ -238,10 +238,10 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                             goto not_foo1;
                         }
 
-                        $matches = array('foo' => $matches[1] ?? null);
+                        $matches = ['foo' => $matches[1] ?? null];
 
-                        $ret = $this->mergeDefaults(array('_route' => 'foo1') + $matches, array());
-                        if (!isset(($a = array('PUT' => 0))[$requestMethod])) {
+                        $ret = $this->mergeDefaults(['_route' => 'foo1'] + $matches, []);
+                        if (!isset(($a = ['PUT' => 0])[$requestMethod])) {
                             $allow += $a;
                             goto not_foo1;
                         }
@@ -263,16 +263,16 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
 
                         if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod) {
-                                return $allow = $allowSchemes = array();
+                                return $allow = $allowSchemes = [];
                             }
                             if ($trimmedPathinfo ===
D7AE
 $pathinfo) {
                                 goto not_foo2;
                             }
                         }
 
-                        $matches = array('foo1' => $matches[1] ?? null);
+                        $matches = ['foo1' => $matches[1] ?? null];
 
-                        return $this->mergeDefaults(array('_route' => 'foo2') + $matches, array());
+                        return $this->mergeDefaults(['_route' => 'foo2'] + $matches, []);
                         not_foo2:
 
                         break;
@@ -289,39 +289,39 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
 
                         if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod) {
-                                return $allow = $allowSchemes = array();
+                                return $allow = $allowSchemes = [];
                             }
                             if ($trimmedPathinfo === $pathinfo) {
                                 goto not_foo3;
                             }
                         }
 
-                        $matches = array('_locale' => $matches[1] ?? null, 'foo' => $matches[2] ?? null);
+                        $matches = ['_locale' => $matches[1] ?? null, 'foo' => $matches[2] ?? null];
 
-                        return $this->mergeDefaults(array('_route' => 'foo3') + $matches, array());
+                        return $this->mergeDefaults(['_route' => 'foo3'] + $matches, []);
                         not_foo3:
 
                         break;
                     default:
-                        $routes = array(
-                            47 => array(array('_route' => 'foo', 'def' => 'test'), array('bar'), null, null, false, true),
-                            70 => array(array('_route' => 'bar'), array('foo'), array('GET' => 0, 'HEAD' => 1), null, false, true),
-                            90 => array(array('_route' => 'barhead'), array('foo'), array('GET' => 0), null, false, true),
-                            131 => array(array('_route' => 'quoter'), array('quoter'), null, null, false, true),
-                            168 => array(array('_route' => 'bar1'), array('bar'), null, null, false, true),
-                            181 => array(array('_route' => 'overridden'), array('var'), null, null, false, true),
-                            212 => array(array('_route' => 'bar2'), array('bar1'), null, null, false, true),
-                            248 => array(array('_route' => 'helloWorld', 'who' => 'World!'), array('who'), null, null, false, true),
-                            287 => array(array('_route' => 'bar3'), array('_locale', 'bar'), null, null, false, true),
-                            309 => array(array('_route' => 'foo4'), array('foo'), null, null, false, true),
-                            371 => array(array('_route' => 'route13'), array('var1', 'name'), null, null, false, true),
-                            389 => array(array('_route' => 'route14', 'var1' => 'val'), array('var1', 'name'), null, null, false, true),
-                            441 => array(array('_route' => 'route15'), array('name'), null, null, false, true),
-                            489 => array(array('_route' => 'route16', 'var1' => 'val'), array('name'), null, null, false, true),
-                            510 => array(array('_route' => 'a'), array(), null, null, false, false),
-                            531 => array(array('_route' => 'b'), array('var'), null, null, false, true),
-                            549 => array(array('_route' => 'c'), array('var'), null, null, false, true),
-                        );
+                        $routes = [
+                            47 => [['_route' => 'foo', 'def' => 'test'], ['bar'], null, null, false, true],
+                            70 => [['_route' => 'bar'], ['foo'], ['GET' => 0, 'HEAD' => 1], null, false, true],
+                            90 => [['_route' => 'barhead'], ['foo'], ['GET' => 0], null, false, true],
+                            131 => [['_route' => 'quoter'], ['quoter'], null, null, false, true],
+                            168 => [['_route' => 'bar1'], ['bar'], null, null, false, true],
+                            181 => [['_route' => 'overridden'], ['var'], null, null, false, true],
+                            212 => [['_route' => 'bar2'], ['bar1'], null, null, false, true],
+                            248 => [['_route' => 'helloWorld', 'who' => 'World!'], ['who'], null, null, false, true],
+                            287 => [['_route' => 'bar3'], ['_locale', 'bar'], null, null, false, true],
+                            309 => [['_route' => 'foo4'], ['foo'], null, null, false, true],
+                            371 => [['_route' => 'route13'], ['var1', 'name'], null, null, false, true],
+                            389 => [['_route' => 'route14', 'var1' => 'val'], ['var1', 'name'], null, null, false, true],
+                            441 => [['_route' => 'route15'], ['name'], null, null, false, true],
+                            489 => [['_route' => 'route16', 'var1' => 'val'], ['name'], null, null, false, true],
+                            510 => [['_route' => 'a'], [], null, null, false, false],
+                            531 => [['_route' => 'b'], ['var'], null, null, false, true],
+                            549 => [['_route' => 'c'], ['var'], null, null, false, true],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
@@ -334,7 +334,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                         }
                         if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                                return $allow = $allowSchemes = array();
+                                return $allow = $allowSchemes = [];
                             }
                             if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
                                 break;
@@ -373,6 +373,6 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
             throw new Symfony\Component\Routing\Exception\NoConfigurationException();
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
index 0b15d203b342..fa0549606ba7 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -35,14 +35,14 @@ public function match($pathinfo)
                 }
 
                 if (($context->getMethod() == "GET")) {
-                    return array('_route' => 'with-condition');
+                    return ['_route' => 'with-condition'];
                 }
                 not_withcondition:
                 break;
             default:
-                $routes = array(
-                    '/rootprefix/test' => array(array('_route' => 'static'), null, null, null, false),
-                );
+                $routes = [
+                    '/rootprefix/test' => [['_route' => 'static'], null, null, null, false],
+                ];
 
                 if (!isset($routes[$trimmedPathinfo])) {
                     break;
@@ -68,19 +68,19 @@ public function match($pathinfo)
         }
 
         $matchedPathinfo = $pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                     .'|/rootprefix/([^/]++)(*:27)'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
                 switch ($m = (int) $matches['MARK']) {
                     default:
-                        $routes = array(
-                            27 => array(array('_route' => 'dynamic'), array('var'), null, null, false, true),
-                        );
+                        $routes = [
+                            27 => [['_route' => 'dynamic'], ['var'], null, null, false, true],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
index 2181a6d7b573..de6bdcf881ae 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -34,8 +34,8 @@ public function match($pathinfo)
                     goto not_put_and_post;
                 }
 
-                $ret = array('_route' => 'put_and_post');
-                if (!isset(($a = array('PUT' => 0, 'POST' => 1))[$requestMethod])) {
+                $ret = ['_route' => 'put_and_post'];
+                if (!isset(($a = ['PUT' => 0, 'POST' => 1])[$requestMethod])) {
                     $allow += $a;
                     goto not_put_and_post;
                 }
@@ -47,8 +47,8 @@ public function match($pathinfo)
                     goto not_put_and_get_and_head;
                 }
 
-                $ret = array('_route' => 'put_and_get_and_head');
-                if (!isset(($a = array('PUT' => 0, 'GET' => 1, 'HEAD' => 2))[$canonicalMethod])) {
+                $ret = ['_route' => 'put_and_get_and_head'];
+                if (!isset(($a = ['PUT' => 0, 'GET' => 1, 'HEAD' => 2])[$canonicalMethod])) {
                     $allow += $a;
                     goto not_put_and_get_and_head;
                 }
@@ -57,12 +57,12 @@ public function match($pathinfo)
                 not_put_and_get_and_head:
                 break;
             default:
-                $routes = array(
-                    '/just_head' => array(array('_route' => 'just_head'), null, array('HEAD' => 0), null, false),
-                    '/head_and_get' => array(array('_route' => 'head_and_get'), null, array('HEAD' => 0, 'GET' => 1), null, false),
-                    '/get_and_head' => array(array('_route' => 'get_and_head'), null, array('GET' => 0, 'HEAD' => 1), null, false),
-                    '/post_and_head' => array(array('_route' => 'post_and_head'), null, array('POST' => 0, 'HEAD' => 1), null, false),
-                );
+                $routes = [
+                    '/just_head' => [['_route' => 'just_head'], null, ['HEAD' => 0], null, false],
+                    '/head_and_get' => [['_route' => 'head_and_get'], null, ['HEAD' => 0, 'GET' => 1], null, false],
+                    '/get_and_head' => [['_route' => 'get_and_head'], null, ['GET' => 0, 'HEAD' => 1], null, false],
+                    '/post_and_head' => [['_route' => 'post_and_head'], null, ['POST' => 0, 'HEAD' => 1], null, false],
+                ];
 
                 if (!isset($routes[$trimmedPathinfo])) {
                     break;
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
index 761c9b98de2f..4bd4b08f5fd8 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
@@ -17,14 +17,14 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         if ($ret = $this->doMatch($pathinfo, $allow, $allowSchemes)) {
             return $ret;
         }
         if ($allow) {
             throw new MethodNotAllowedException(array_keys($allow));
         }
-        if (!in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+        if (!in_array($this->context->getMethod(), ['HEAD', 'GET'], true)) {
             // no-op
         } elseif ($allowSchemes) {
             redirect_scheme:
@@ -50,9 +50,9 @@ public function match($pathinfo)
         throw new ResourceNotFoundException();
     }
 
-    private function doMatch(string $pathinfo, array &$allow = array(), array &$allowSchemes = array()): array
+    private function doMatch(string $pathinfo, array &$allow = [], array &$allowSchemes = []): array
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -64,20 +64,20 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
 
         switch ($trimmedPathinfo) {
             default:
-                $routes = array(
-                    '/a/11' => array(array('_route' => 'a_first'), null, null, null, false),
-                    '/a/22' => array(array('_route' => 'a_second'), null, null, null, false),
-                    '/a/333' => array(array('_route' => 'a_third'), null, null, null, false),
-                    '/a/44' => array(array('_route' => 'a_fourth'), null, null, null, true),
-                    '/a/55' => array(array('_route' => 'a_fifth'), null, null, null, true),
-                    '/a/66' => array(array('_route' => 'a_sixth'), null, null, null, true),
-                    '/nested/group/a' => array(array('_route' => 'nested_a'), null, null, null, true),
-                    '/nested/group/b' => array(array('_route' => 'nested_b'), null, null, null, true),
-                    '/nested/group/c' => array(array('_route' => 'nested_c'), null, null, null, true),
-                    '/slashed/group' => array(array('_route' => 'slashed_a'), null, null, null, true),
-                    '/slashed/group/b' => array(array('_route' => 'slashed_b'), null, null, null, true),
-                    '/slashed/group/c' => array(array('_route' => 'slashed_c'), null, null, null, true),
-                );
+                $routes = [
+                    '/a/11' => [['_route' => 'a_first'], null, null, null, false],
+                    '/a/22' => [['_route' => 'a_second'], null, null, null, false],
+                    '/a/333' => [['_route' => 'a_third'], null, null, null, false],
+                    '/a/44' => [['_route' => 'a_fourth'], null, null, null, true],
+                    '/a/55' => [['_route' => 'a_fifth'], null, null, null, true],
+                    '/a/66' => [['_route' => 'a_sixth'], null, null, null, true],
+                    '/nested/group/a' => [['_route' => 'nested_a'], null, null, null, true],
+                    '/nested/group/b' => [['_route' => 'nested_b'], null, null, null, true],
+                    '/nested/group/c' => [['_route' => 'nested_c'], null, null, null, true],
+                    '/slashed/group' => [['_route' => 'slashed_a'], null, null, null, true],
+                    '/slashed/group/b' => [['_route' => 'slashed_b'], null, null, null, true],
+                    '/slashed/group/c' => [['_route' => 'slashed_c'], null, null, null, true],
+                ];
 
                 if (!isset($routes[$trimmedPathinfo])) {
                     break;
@@ -85,7 +85,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                 list($ret, $requiredHost, $requiredMethods, $requiredSchemes, $hasTrailingSlash) = $routes[$trimmedPathinfo];
                 if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                     if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                        return $allow = $allowSchemes = array();
+                        return $allow = $allowSchemes = [];
                     }
                     break;
                 }
@@ -106,21 +106,21 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
         }
 
         $matchedPathinfo = $pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                     .'|/([^/]++)(*:16)'
                     .'|/nested/([^/]++)(*:39)'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
                 switch ($m = (int) $matches['MARK']) {
                     default:
-                        $routes = array(
-                            16 => array(array('_route' => 'a_wildcard'), array('param'), null, null, false, true),
-                            39 => array(array('_route' => 'nested_wildcard'), array('param'), null, null, false, true),
-                        );
+                        $routes = [
+                            16 => [['_route' => 'a_wildcard'], ['param'], null, null, false, true],
+                            39 => [['_route' => 'nested_wildcard'], ['param'], null, null, false, true],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
@@ -133,7 +133,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                         }
                         if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                                return $allow = $allowSchemes = array();
+                                return $allow = $allowSchemes = [];
                             }
                             if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
                                 break;
@@ -172,6 +172,6 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
             throw new Symfony\Component\Routing\Exception\NoConfigurationException();
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
index 9d27938e00f8..caa2e3e220ac 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -29,16 +29,16 @@ public function match($pathinfo)
 
         switch ($trimmedPathinfo) {
             default:
-                $routes = array(
-                    '/trailing/simple/no-methods' => array(array('_route' => 'simple_trailing_slash_no_methods'), null, null, null, true),
-                    '/trailing/simple/get-method' => array(array('_route' => 'simple_trailing_slash_GET_method'), null, array('GET' => 0), null, true),
-                    '/trailing/simple/head-method' => array(array('_route' => 'simple_trailing_slash_HEAD_method'), null, array('HEAD' => 0), null, true),
-                    '/trailing/simple/post-method' => array(array('_route' => 'simple_trailing_slash_POST_method'), null, array('POST' => 0), null, true),
-                    '/not-trailing/simple/no-methods' => array(array('_route' => 'simple_not_trailing_slash_no_methods'), null, null, null, false),
-                    '/not-trailing/simple/get-method' => array(array('_route' => 'simple_not_trailing_slash_GET_method'), null, array('GET' => 0), null, false),
-                    '/not-trailing/simple/head-method' => array(array('_route' => 'simple_not_trailing_slash_HEAD_method'), null, array('HEAD' => 0), null, false),
-                    '/not-trailing/simple/post-method' => array(array('_route' => 'simple_not_trailing_slash_POST_method'), null, array('POST' => 0), null, false),
-                );
+                $routes = [
+                    '/trailing/simple/no-methods' => [['_route' => 'simple_trailing_slash_no_methods'], null, null, null, true],
+                    '/trailing/simple/get-method' => [['_route' => 'simple_trailing_slash_GET_method'], null, ['GET' => 0], null, true],
+                    '/trailing/simple/head-method' => [['_route' => 'simple_trailing_slash_HEAD_method'], null, ['HEAD' => 0], null, true],
+                    '/trailing/simple/post-method' => [['_route' => 'simple_trailing_slash_POST_method'], null, ['POST' => 0], null, true],
+                    '/not-trailing/simple/no-methods' => [['_route' => 'simple_not_trailing_slash_no_methods'], null, null, null, false],
+                    '/not-trailing/simple/get-method' => [['_route' => 'simple_not_trailing_slash_GET_method'], null, ['GET' => 0], null, false],
+                    '/not-trailing/simple/head-method' => [['_route' => 'simple_not_trailing_slash_HEAD_method'], null, ['HEAD' => 0], null, false],
+                    '/not-trailing/simple/post-method' => [['_route' => 'simple_not_trailing_slash_POST_method'], null, ['POST' => 0], null, false],
+                ];
 
                 if (!isset($routes[$trimmedPathinfo])) {
                     break;
@@ -64,7 +64,7 @@ public function match($pathinfo)
         }
 
         $matchedPathinfo = $pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                     .'|/trailing/regex/(?'
                         .'|no\\-methods/([^/]++)(*:46)'
@@ -79,22 +79,22 @@ public function match($pathinfo)
                         .'|post\\-method/([^/]++)(*:269)'
                     .')'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
                 switch ($m = (int) $matches['MARK']) {
                     default:
-                        $routes = array(
-                            46 => array(array('_route' => 'regex_trailing_slash_no_methods'), array('param'), null, null, true, true),
-                            73 => array(array('_route' => 'regex_trailing_slash_GET_method'), array('param'), array('GET' => 0), null, true, true),
-                            101 => array(array('_route' => 'regex_trailing_slash_HEAD_method'), array('param'), array('HEAD' => 0), null, true, true),
-                            130 => array(array('_route' => 'regex_trailing_slash_POST_method'), array('param'), array('POST' => 0), null, true, true),
-                            183 => array(array('_route' => 'regex_not_trailing_slash_no_methods'), array('param'), null, null, false, true),
-                            211 => array(array('_route' => 'regex_not_trailing_slash_GET_method'), array('param'), array('GET' => 0), null, false, true),
-                            240 => array(array('_route' => 'regex_not_trailing_slash_HEAD_method'), array('param'), array('HEAD' => 0), null, false, true),
-                            269 => array(array('_route' => 'regex_not_trailing_slash_POST_method'), array('param'), array('POST' => 0), null, false, true),
-                        );
+                        $routes = [
+                            46 => [['_route' => 'regex_trailing_slash_no_methods'], ['param'], null, null, true, true],
+                            73 => [['_route' => 'regex_trailing_slash_GET_method'], ['param'], ['GET' => 0], null, true, true],
+                            101 => [['_route' => 'regex_trailing_slash_HEAD_method'], ['param'], ['HEAD' => 0], null, true, true],
+                            130 => [['_route' => 'regex_trailing_slash_POST_method'], ['param'], ['POST' => 0], null, true, true],
+                            183 => [['_route' => 'regex_not_trailing_slash_no_methods'], ['param'], null, null, false, true],
+                            211 => [['_route' => 'regex_not_trailing_slash_GET_method'], ['param'], ['GET' => 0], null, false, true],
+                            240 => [['_route' => 'regex_not_trailing_slash_HEAD_method'], ['param'], ['HEAD' => 0], null, false, true],
+                            269 => [['_route' => 'regex_not_trailing_slash_POST_method'], ['param'], ['POST' => 0], null, false, true],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
index e917fa1c83fe..2c0b58b10614 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
@@ -17,14 +17,14 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         if ($ret = $this->doMatch($pathinfo, $allow, $allowSchemes)) {
             return $ret;
         }
         if ($allow) {
             throw new MethodNotAllowedException(array_keys($allow));
         }
-        if (!in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+        if (!in_array($this->context->getMethod(), ['HEAD', 'GET'], true)) {
             // no-op
         } elseif ($allowSchemes) {
             redirect_scheme:
@@ -50,9 +50,9 @@ public function match($pathinfo)
         throw new ResourceNotFoundException();
     }
 
-    private function doMatch(string $pathinfo, array &$allow = array(), array &$allowSchemes = array()): array
+    private function doMatch(string $pathinfo, array &$allow = [], array &$allowSchemes = []): array
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -64,16 +64,16 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
 
         switch ($trimmedPathinfo) {
             default:
-                $routes = array(
-                    '/trailing/simple/no-methods' => array(array('_route' => 'simple_trailing_slash_no_methods'), null, null, null, true),
-                    '/trailing/simple/get-method' => array(array('_route' => 'simple_trailing_slash_GET_method'), null, array('GET' => 0), null, true),
-                    '/trailing/simple/head-method' => array(array('_route' => 'simple_trailing_slash_HEAD_method'), null, array('HEAD' => 0), null, true),
-                    '/trailing/simple/post-method' => array(array('_route' => 'simple_trailing_slash_POST_method'), null, array('POST' => 0), null, true),
-                    '/not-trailing/simple/no-methods' => array(array('_route' => 'simple_not_trailing_slash_no_methods'), null, null, null, false),
-                    '/not-trailing/simple/get-method' => array(array('_route' => 'simple_not_trailing_slash_GET_method'), null, array('GET' => 0), null, false),
-                    '/not-trailing/simple/head-method' => array(array('_route' => 'simple_not_trailing_slash_HEAD_method'), null, array('HEAD' => 0), null, false),
-                    '/not-trailing/simple/post-method' => array(array('_route' => 'simple_not_trailing_slash_POST_method'), null, array('POST' => 0), null, false),
-                );
+                $routes = [
+                    '/trailing/simple/no-methods' => [['_route' => 'simple_trailing_slash_no_methods'], null, null, null, true],
+                    '/trailing/simple/get-method' => [['_route' => 'simple_trailing_slash_GET_method'], null, ['GET' => 0], null, true],
+                    '/trailing/simple/head-method' => [['_route' => 'simple_trailing_slash_HEAD_method'], null, ['HEAD' => 0], null, true],
+                    '/trailing/simple/post-method' => [['_route' => 'simple_trailing_slash_POST_method'], null, ['POST' => 0], null, true],
+                    '/not-trailing/simple/no-methods' => [['_route' => 'simple_not_trailing_slash_no_methods'], null, null, null, false],
+                    '/not-trailing/simple/get-method' => [['_route' => 'simple_not_trailing_slash_GET_method'], null, ['GET' => 0], null, false],
+                    '/not-trailing/simple/head-method' => [['_route' => 'simple_not_trailing_slash_HEAD_method'], null, ['HEAD' => 0], null, false],
+                    '/not-trailing/simple/post-method' => [['_route' => 'simple_not_trailing_slash_POST_method'], null, ['POST' => 0], null, false],
+                ];
 
                 if (!isset($routes[$trimmedPathinfo])) {
                     break;
@@ -81,7 +81,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                 list($ret, $requiredHost, $requiredMethods, $requiredSchemes, $hasTrailingSlash) = $routes[$trimmedPathinfo];
                 if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                     if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                        return $allow = $allowSchemes = array();
+                        return $allow = $allowSchemes = [];
                     }
                     break;
                 }
@@ -102,7 +102,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
         }
 
         $matchedPathinfo = $pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                     .'|/trailing/regex/(?'
                         .'|no\\-methods/([^/]++)(*:46)'
@@ -117,22 +117,22 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                         .'|post\\-method/([^/]++)(*:269)'
                     .')'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
                 switch ($m = (int) $matches['MARK']) {
                     default:
-                        $routes = array(
-                            46 => array(array('_route' => 'regex_trailing_slash_no_methods'), array('param'), null, null, true, true),
-                            73 => array(array('_route' => 'regex_trailing_slash_GET_method'), array('param'), array('GET' => 0), null, true, true),
-                            101 => array(array('_route' => 'regex_trailing_slash_HEAD_method'), array('param'), array('HEAD' => 0), null, true, true),
-                            130 => array(array('_route' => 'regex_trailing_slash_POST_method'), array('param'), array('POST' => 0), null, true, true),
-                            183 => array(array('_route' => 'regex_not_trailing_slash_no_methods'), array('param'), null, null, false, true),
-                            211 => array(array('_route' => 'regex_not_trailing_slash_GET_method'), array('param'), array('GET' => 0), null, false, true),
-                            240 => array(array('_route' => 'regex_not_trailing_slash_HEAD_method'), array('param'), array('HEAD' => 0), null, false, true),
-                            269 => array(array('_route' => 'regex_not_trailing_slash_POST_method'), array('param'), array('POST' => 0), null, false, true),
-                        );
+                        $routes = [
+                            46 => [['_route' => 'regex_trailing_slash_no_methods'], ['param'], null, null, true, true],
+                            73 => [['_route' => 'regex_trailing_slash_GET_method'], ['param'], ['GET' => 0], null, true, true],
+                            101 => [['_route' => 'regex_trailing_slash_HEAD_method'], ['param'], ['HEAD' => 0], null, true, true],
+                            130 => [['_route' => 'regex_trailing_slash_POST_method'], ['param'], ['POST' => 0], null, true, true],
+                            183 => [['_route' => 'regex_not_trailing_slash_no_methods'], ['param'], null, null, false, true],
+                            211 => [['_route' => 'regex_not_trailing_slash_GET_method'], ['param'], ['GET' => 0], null, false, true],
+                            240 => [['_route' => 'regex_not_trailing_slash_HEAD_method'], ['param'], ['HEAD' => 0], null, false, true],
+                            269 => [['_route' => 'regex_not_trailing_slash_POST_method'], ['param'], ['POST' => 0], null, false, true],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
@@ -145,7 +145,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
                         }
                         if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                                return $allow = $allowSchemes = array();
+                                return $allow = $allowSchemes = [];
                             }
                             if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
                                 break;
@@ -184,6 +184,6 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
             throw new Symfony\Component\Routing\Exception\NoConfigurationException();
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
index 7becc96ab5d2..edbbb29cefa0 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -28,7 +28,7 @@ public function match($pathinfo)
         }
 
         $matchedPathinfo = $pathinfo;
-        $regexList = array(
+        $regexList = [
             0 => '{^(?'
                     .'|/(a)(*:11)'
                 .')/?$}sD',
@@ -38,17 +38,17 @@ public function match($pathinfo)
             22 => '{^(?'
                     .'|/(.)(*:33)'
                 .')/?$}sD',
-        );
+        ];
 
         foreach ($regexList as $offset => $regex) {
             while (preg_match($regex, $matchedPathinfo, $matches)) {
                 switch ($m = (int) $matches['MARK']) {
                     default:
-                        $routes = array(
-                            11 => array(array('_route' => 'a'), array('a'), null, null, false, true),
-                            22 => array(array('_route' => 'b'), array('a'), null, null, false, true),
-                            33 => array(array('_route' => 'c'), array('a'), null, null, false, true),
-                        );
+                        $routes = [
+                            11 => [['_route' => 'a'], ['a'], null, null, false, true],
+                            22 => [['_route' => 'b'], ['a'], null, null, false, true],
+                            33 => [['_route' => 'c'], ['a'], null, null, false, true],
+                        ];
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher9.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher9.php
index 6dfe3e56d3d7..f85771dd1dfc 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher9.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher9.php
@@ -17,7 +17,7 @@ public function __construct(RequestContext $context)
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -32,17 +32,17 @@ public function match($pathinfo)
             case '/':
                 // a
                 if (preg_match('#^(?P<d>[^\\.]++)\\.e\\.c\\.b\\.a$#sDi', $host, $hostMatches)) {
-                    return $this->mergeDefaults(array('_route' => 'a') + $hostMatches, array());
+                    return $this->mergeDefaults(['_route' => 'a'] + $hostMatches, []);
                 }
                 not_a:
                 // c
                 if (preg_match('#^(?P<e>[^\\.]++)\\.e\\.c\\.b\\.a$#sDi', $host, $hostMatches)) {
-                    return $this->mergeDefaults(array('_route' => 'c') + $hostMatches, array());
+                    return $this->mergeDefaults(['_route' => 'c'] + $hostMatches, []);
                 }
                 not_c:
                 // b
                 if ('d.c.b.a' === $host) {
-                    return array('_route' => 'b');
+                    return ['_route' => 'b'];
                 }
                 not_b:
                 break;
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl_i18n.php b/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl_i18n.php
index ed4a0e22e18d..7489360cc268 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl_i18n.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl_i18n.php
@@ -5,13 +5,13 @@
 return function (RoutingConfigurator $routes) {
     $routes
         ->collection()
-        ->prefix(array('en' => '/glish'))
+        ->prefix(['en' => '/glish'])
         ->add('foo', '/foo')
-        ->add('bar', array('en' => '/bar'));
+        ->add('bar', ['en' => '/bar']);
 
     $routes
-        ->add('baz', array('en' => '/baz'));
+        ->add('baz', ['en' => '/baz']);
 
     $routes->import('php_dsl_sub_i18n.php')
-        ->prefix(array('fr' => '/ench'));
+        ->prefix(['fr' => '/ench']);
 };
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl_sub_i18n.php b/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl_sub_i18n.php
index c112e716ce1b..e79edc869d2d 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl_sub_i18n.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/php_dsl_sub_i18n.php
@@ -6,6 +6,6 @@
     $add = $routes->collection('c_')
         ->prefix('pub');
 
-    $add('foo', array('fr' => '/foo'));
-    $add('bar', array('fr' => '/bar'));
+    $add('foo', ['fr' => '/foo']);
+    $add('bar', ['fr' => '/bar']);
 };
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/php_object_dsl.php b/src/Symfony/Component/Routing/Tests/Fixtures/php_object_dsl.php
index f21f402efd4a..9b9183a1b942 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/php_object_dsl.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/php_object_dsl.php
@@ -9,13 +9,13 @@ public function __invoke(RoutingConfigurator $routes)
             ->collection()
             ->add('foo', '/foo')
             ->condition('abc')
-            ->options(array('utf8' => true))
+            ->options(['utf8' => true])
             ->add('buz', 'zub')
             ->controller('foo:act');
 
         $routes->import('php_dsl_sub.php')
             ->prefix('/sub')
-            ->requirements(array('id' => '\d+'));
+            ->requirements(['id' => '\d+']);
 
         $routes->import('php_dsl_sub.php')
             ->namePrefix('z_')
@@ -25,8 +25,8 @@ public function __invoke(RoutingConfigurator $routes)
             ->prefix('/bus', false);
 
         $routes->add('ouf', '/ouf')
-            ->schemes(array('https'))
-            ->methods(array('GET'))
-            ->defaults(array('id' => 0));
+            ->schemes(['https'])
+            ->methods(['GET'])
+            ->defaults(['id' => 0]);
     }
 };
diff --git a/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php b/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
index 2917fd01f4aa..33c25c01f419 100644
--- a/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
@@ -89,9 +89,9 @@ public function testDumpWithLocalizedRoutes()
         $this->routeCollection->add('test.en', (new Route('/testing/is/fun'))->setDefault('_locale', 'en')->setDefault('_canonical_route', 'test'));
         $this->routeCollection->add('test.nl', (new Route('/testen/is/leuk'))->setDefault('_locale', 'nl')->setDefault('_canonical_route', 'test'));
 
-        $code = $this->generatorDumper->dump(array(
+        $code = $this->generatorDumper->dump([
             'class' => 'LocalizedProjectUrlGenerator',
-        ));
+        ]);
         file_put_contents($this->testTmpFilepath, $code);
         include $this->testTmpFilepath;
 
@@ -99,7 +99,7 @@ public function testDumpWithLocalizedRoutes()
         $projectUrlGenerator = new \LocalizedProjectUrlGenerator($context, null, 'en');
 
         $urlWithDefaultLocale = $projectUrlGenerator->generate('test');
-        $urlWithSpecifiedLocale = $projectUrlGenerator->generate('test', array('_locale' => 'nl'));
+        $urlWithSpecifiedLocale = $projectUrlGenerator->generate('test', ['_locale' => 'nl']);
         $context->setParameter('_locale', 'en');
         $urlWithEnglishContext = $projectUrlGenerator->generate('test');
         $context->setParameter('_locale', 'nl');
diff --git a/src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php
index ec622c02616a..3e0b93f12d1d 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php
@@ -63,15 +63,15 @@ public function testSupportsChecksResource($resource, $expectedSupports)
 
     public function provideTestSupportsChecksResource()
     {
-        return array(
-            array('class', true),
-            array('\fully\qualified\class\name', true),
-            array('namespaced\class\without\leading\slash', true),
-            array('ÿClassWithLegalSpecialCharacters', true),
-            array('5', false),
-            array('foo.foo', false),
-            array(null, false),
-        );
+        return [
+            ['class', true],
+            ['\fully\qualified\class\name', true],
+            ['namespaced\class\without\leading\slash', true],
+            ['ÿClassWithLegalSpecialCharacters', true],
+            ['5', false],
+            ['foo.foo', false],
+            [null, false],
+        ];
     }
 
     public function testSupportsChecksTypeIfSpecified()
@@ -92,8 +92,8 @@ public function testInvokableControllerLoader()
         $routes = $this->loader->load(InvokableController::class);
         $this->assertCount(1, $routes);
         $this->assertEquals('/here', $routes->get('lol')->getPath());
-        $this->assertEquals(array('GET', 'POST'), $routes->get('lol')->getMethods());
-        $this->assertEquals(array('https'), $routes->get('lol')->getSchemes());
+        $this->assertEquals(['GET', 'POST'], $routes->get('lol')->getMethods());
+        $this->assertEquals(['https'], $routes->get('lol')->getSchemes());
     }
 
     public function testInvokableLocalizedControllerLoading()
@@ -172,30 +172,30 @@ public function testLocalizedPrefixLocalizedRoute()
 
     public function testInvokableClassMultipleRouteLoad()
     {
-        $classRouteData1 = array(
+        $classRouteData1 = [
             'name' => 'route1',
             'path' => '/1',
-            'schemes' => array('https'),
-            'methods' => array('GET'),
-        );
+            'schemes' => ['https'],
+            'methods' => ['GET'],
+        ];
 
-        $classRouteData2 = array(
+        $classRouteData2 = [
             'name' => 'route2',
             'path' => '/2',
-            'schemes' => array('https'),
-            'methods' => array('GET'),
-        );
+            'schemes' => ['https'],
+            'methods' => ['GET'],
+        ];
 
         $reader = $this->getReader();
         $reader
             ->expects($this->exactly(1))
             ->method('getClassAnnotations')
-            ->will($this->returnValue(array(new RouteAnnotation($classRouteData1), new RouteAnnotation($classRouteData2))))
+            ->will($this->returnValue([new RouteAnnotation($classRouteData1), new RouteAnnotation($classRouteData2)]))
         ;
         $reader
             ->expects($this->once())
             ->method('getMethodAnnotations')
-            ->will($this->returnValue(array()))
+            ->will($this->returnValue([]))
         ;
         $loader = new class($reader) extends AnnotationClassLoader {
             protected function configureRoute(Route $route, \ReflectionClass $class, \ReflectionMethod $method, $annot)
diff --git a/src/Symfony/Component/Routing/Tests/Loader/ObjectRouteLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/ObjectRouteLoaderTest.php
index ed6506829f1d..0e9289bee467 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/ObjectRouteLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/ObjectRouteLoaderTest.php
@@ -30,9 +30,9 @@ public function testLoadCallsServiceAndReturnsCollectionWithLegacyNotation()
         $collection = new RouteCollection();
         $collection->add('foo', new Route('/foo'));
 
-        $loader->loaderMap = array(
+        $loader->loaderMap = [
             'my_route_provider_service' => new RouteService($collection),
-        );
+        ];
 
         $actualRoutes = $loader->load(
             'my_route_provider_service:loadRoutes',
@@ -52,9 +52,9 @@ public function testLoadCallsServiceAndReturnsCollection()
         $collection = new RouteCollection();
         $collection->add('foo', new Route('/foo'));
 
-        $loader->loaderMap = array(
+        $loader->loaderMap = [
             'my_route_provider_service' => new RouteService($collection),
-        );
+        ];
 
         $actualRoutes = $loader->load(
             'my_route_provider_service::loadRoutes',
@@ -78,10 +78,10 @@ public function testExceptionWithoutSyntax($resourceString)
 
     public function getBadResourceStrings()
     {
-        return array(
-            array('Foo'),
-            array('Foo:Bar:baz'),
-        );
+        return [
+            ['Foo'],
+            ['Foo:Bar:baz'],
+        ];
     }
 
     /**
@@ -90,7 +90,7 @@ public function getBadResourceStrings()
     public function testExceptionOnNoObjectReturned()
     {
         $loader = new ObjectRouteLoaderForTest();
-        $loader->loaderMap = array('my_service' => 'NOT_AN_OBJECT');
+        $loader->loaderMap = ['my_service' => 'NOT_AN_OBJECT'];
         $loader->load('my_service::method');
     }
 
@@ -100,7 +100,7 @@ public function testExceptionOnNoObjectReturned()
     public function testExceptionOnBadMethod()
     {
         $loader = new ObjectRouteLoaderForTest();
-        $loader->loaderMap = array('my_service' => new \stdClass());
+        $loader->loaderMap = ['my_service' => new \stdClass()];
         $loader->load('my_service::method');
     }
 
@@ -110,21 +110,21 @@ public function testExceptionOnBadMethod()
     public function testExceptionOnMethodNotReturningCollection()
     {
         $service = $this->getMockBuilder('stdClass')
-            ->setMethods(array('loadRoutes'))
+            ->setMethods(['loadRoutes'])
             ->getMock();
         $service->expects($this->once())
             ->method('loadRoutes')
             ->will($this->returnValue('NOT_A_COLLECTION'));
 
         $loader = new ObjectRouteLoaderForTest();
-        $loader->loaderMap = array('my_service' => $service);
+        $loader->loaderMap = ['my_service' => $service];
         $loader->load('my_service::loadRoutes');
     }
 }
 
 class ObjectRouteLoaderForTest extends ObjectRouteLoader
 {
-    public $loaderMap = array();
+    public $loaderMap = [];
 
     protected function getServiceObject($id)
     {
diff --git a/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
index 3e63f01bbd66..fcde87037348 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
@@ -101,7 +101,7 @@ public function testRoutingConfigurator()
             ->setDefaults(['_controller' => 'foo:act'])
         );
         $expectedCollection->add('c_root', (new Route('/sub/pub/'))
-            ->setRequirements(array('id' => '\d+'))
+            ->setRequirements(['id' => '\d+'])
         );
         $expectedCollection->add('c_bar', (new Route('/sub/pub/bar'))
             ->setRequirements(['id' => '\d+'])
@@ -149,17 +149,17 @@ public function testRoutingConfiguratorCanImportGlobPatterns()
 
     public function testRoutingI18nConfigurator()
     {
-        $locator = new FileLocator(array(__DIR__.'/../Fixtures'));
+        $locator = new FileLocator([__DIR__.'/../Fixtures']);
         $loader = new PhpFileLoader($locator);
         $routeCollection = $loader->load('php_dsl_i18n.php');
 
         $expectedCollection = new RouteCollection();
 
-        $expectedCollection->add('foo.en', (new Route('/glish/foo'))->setDefaults(array('_locale' => 'en', '_canonical_route' => 'foo')));
-        $expectedCollection->add('bar.en', (new Route('/glish/bar'))->setDefaults(array('_locale' => 'en', '_canonical_route' => 'bar')));
-        $expectedCollection->add('baz.en', (new Route('/baz'))->setDefaults(array('_locale' => 'en', '_canonical_route' => 'baz')));
-        $expectedCollection->add('c_foo.fr', (new Route('/ench/pub/foo'))->setDefaults(array('_locale' => 'fr', '_canonical_route' => 'c_foo')));
-        $expectedCollection->add('c_bar.fr', (new Route('/ench/pub/bar'))->setDefaults(array('_locale' => 'fr', '_canonical_route' => 'c_bar')));
+        $expectedCollection->add('foo.en', (new Route('/glish/foo'))->setDefaults(['_locale' => 'en', '_canonical_route' => 'foo']));
+        $expectedCollection->add('bar.en', (new Route('/glish/bar'))->setDefaults(['_locale' => 'en', '_canonical_route' => 'bar']));
+        $expectedCollection->add('baz.en', (new Route('/baz'))->setDefaults(['_locale' => 'en', '_canonical_route' => 'baz']));
+        $expectedCollection->add('c_foo.fr', (new Route('/ench/pub/foo'))->setDefaults(['_locale' => 'fr', '_canonical_route' => 'c_foo']));
+        $expectedCollection->add('c_bar.fr', (new Route('/ench/pub/bar'))->setDefaults(['_locale' => 'fr', '_canonical_route' => 'c_bar']));
 
         $expectedCollection->addResource(new FileResource(realpath(__DIR__.'/../Fixtures/php_dsl_sub_i18n.php')));
         $expectedCollection->addResource(new FileResource(realpath(__DIR__.'/../Fixtures/php_dsl_i18n.php')));
diff --git a/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
index c9806abffae7..f40b155d7818 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
@@ -85,7 +85,7 @@ public function testLoadWithImport()
 
     public function testLoadLocalized()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $routeCollection = $loader->load('localized.xml');
         $routes = $routeCollection->all();
 
@@ -98,7 +98,7 @@ public function testLoadLocalized()
 
     public function testLocalizedImports()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $routeCollection = $loader->load('importer-with-locale.xml');
         $routes = $routeCollection->all();
 
@@ -111,7 +111,7 @@ public function testLocalizedImports()
 
     public function testLocalizedImportsOfNotLocalizedRoutes()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $routeCollection = $loader->load('importer-with-locale-imports-non-localized-route.xml');
         $routes = $routeCollection->all();
 
@@ -424,7 +424,7 @@ public function testImportRouteWithGlobMatchingMultipleFiles()
 
     public function testImportRouteWithNamePrefix()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/import_with_name_prefix')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/import_with_name_prefix']));
         $routeCollection = $loader->load('routing.xml');
 
         $this->assertNotNull($routeCollection->get('app_blog'));
@@ -435,7 +435,7 @@ public function testImportRouteWithNamePrefix()
 
     public function testImportRouteWithNoTrailingSlash()
     {
-        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/import_with_no_trailing_slash')));
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/import_with_no_trailing_slash']));
         $routeCollection = $loader->load('routing.xml');
 
         $this->assertEquals('/slash/', $routeCollection->get('a_app_homepage')->getPath());
diff --git a/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
index f258acc5058b..0bfc9364cc38 100644
--- a/sr
341A
c/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
@@ -206,7 +206,7 @@ public function testImportRouteWithGlobMatchingMultipleFiles()
 
     public function testImportRouteWithNamePrefix()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/import_with_name_prefix')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/import_with_name_prefix']));
         $routeCollection = $loader->load('routing.yml');
 
         $this->assertNotNull($routeCollection->get('app_blog'));
@@ -224,7 +224,7 @@ public function testRemoteSourcesAreNotAccepted()
 
     public function testLoadingLocalizedRoute()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $routes = $loader->load('localized-route.yml');
 
         $this->assertCount(3, $routes);
@@ -232,7 +232,7 @@ public function testLoadingLocalizedRoute()
 
     public function testImportingRoutesFromDefinition()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $routes = $loader->load('importing-localized-route.yml');
 
         $this->assertCount(3, $routes);
@@ -243,7 +243,7 @@ public function testImportingRoutesFromDefinition()
 
     public function testImportingRoutesWithLocales()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $routes = $loader->load('importer-with-locale.yml');
 
         $this->assertCount(2, $routes);
@@ -253,7 +253,7 @@ public function testImportingRoutesWithLocales()
 
     public function testImportingNonLocalizedRoutesWithLocales()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $routes = $loader->load('importer-with-locale-imports-non-localized-route.yml');
 
         $this->assertCount(2, $routes);
@@ -263,7 +263,7 @@ public function testImportingNonLocalizedRoutesWithLocales()
 
     public function testImportingRoutesWithOfficialLocales()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $routes = $loader->load('officially_formatted_locales.yml');
 
         $this->assertCount(3, $routes);
@@ -274,21 +274,21 @@ public function testImportingRoutesWithOfficialLocales()
 
     public function testImportingRoutesFromDefinitionMissingLocalePrefix()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $this->expectException(\InvalidArgumentException::class);
         $loader->load('missing-locale-in-importer.yml');
     }
 
     public function testImportingRouteWithoutPathOrLocales()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $this->expectException(\InvalidArgumentException::class);
         $loader->load('route-without-path-or-locales.yml');
     }
 
     public function testImportingWithControllerDefault()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/localized')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/localized']));
         $routes = $loader->load('importer-with-controller-default.yml');
         $this->assertCount(3, $routes);
         $this->assertEquals('DefaultController::defaultAction', $routes->get('home.en')->getDefault('_controller'));
@@ -298,7 +298,7 @@ public function testImportingWithControllerDefault()
 
     public function testImportRouteWithNoTrailingSlash()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures/import_with_no_trailing_slash')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/import_with_no_trailing_slash']));
         $routeCollection = $loader->load('routing.yml');
 
         $this->assertEquals('/slash/', $routeCollection->get('a_app_homepage')->getPath());
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
index a5cb043517f3..a85ac67ae2c7 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
@@ -54,11 +54,11 @@ public function testRedirectPreservesUrlEncoding()
         $class = $this->generateDumpedMatcher($collection, true);
 
         $matcher = $this->getMockBuilder($class)
-                        ->setMethods(array('redirect'))
-                        ->setConstructorArgs(array(new RequestContext()))
+                        ->setMethods(['redirect'])
+                        ->setConstructorArgs([new RequestContext()])
                         ->getMock();
 
-        $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/', 'foo')->willReturn(array());
+        $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/', 'foo')->willReturn([]);
 
         $matcher->match('/foo%3Abar');
     }
@@ -66,7 +66,7 @@ public function testRedirectPreservesUrlEncoding()
     /**
      * @dataProvider getRouteCollections
      */
-    public function testDump(RouteCollection $collection, $fixture, $options = array())
+    public function testDump(RouteCollection $collection, $fixture, $options = [])
     {
         $basePath = __DIR__.'/../../Fixtures/dumper/';
 
@@ -85,28 +85,28 @@ public function getRouteCollections()
         // defaults and requirements
         $collection->add('foo', new Route(
             '/foo/{bar}',
-            array('def' => 'test'),
-            array('bar' => 'baz|symfony')
+            ['def' => 'test'],
+            ['bar' => 'baz|symfony']
         ));
         // method requirement
         $collection->add('bar', new Route(
             '/bar/{foo}',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('GET', 'head')
+            [],
+            ['GET', 'head']
         ));
         // GET method requirement automatically adds HEAD as valid
         $collection->add('barhead', new Route(
             '/barhead/{foo}',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('GET')
+            [],
+            ['GET']
         ));
         // simple
         $collection->add('baz', new Route(
@@ -127,33 +127,33 @@ public function getRouteCollections()
         // trailing slash and method
         $collection->add('baz5', new Route(
             '/test/{foo}/',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('post')
+            [],
+            ['post']
         ));
         // complex name
         $collection->add('baz.baz6', new Route(
             '/test/{foo}/',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('put')
+            [],
+            ['put']
         ));
         // defaults without variable
         $collection->add('foofoo', new Route(
             '/foofoo',
-            array('def' => 'test')
+            ['def' => 'test']
         ));
         // pattern with quotes
         $collection->add('quoter', new Route(
             '/{quoter}',
-            array(),
-            array('quoter' => '[\']+')
+            [],
+            ['quoter' => '[\']+']
         ));
         // space in pattern
         $collection->add('space', new Route(
@@ -168,7 +168,7 @@ public function getRouteCollections()
         $collection1->addPrefix('/b\'b');
         $collection2 = new RouteCollection();
         $collection2->addCollection($collection1);
-        $collection2->add('overridden', new Route('/{var}', array(), array('var' => '.*')));
+        $collection2->add('overridden', new Route('/{var}', [], ['var' => '.*']));
         $collection1 = new RouteCollection();
         $collection1->add('foo2', new Route('/{foo1}'));
         $collection1->add('bar2', new Route('/{bar1}'));
@@ -180,7 +180,7 @@ public function getRouteCollections()
         // overridden through addCollection() and multiple sub-collections with no own prefix
         $collection1 = new RouteCollection();
         $collection1->add('overridden2', new Route('/old'));
-        $collection1->add('helloWorld', new Route('/hello/{who}', array('who' => 'World!')));
+        $collection1->add('helloWorld', new Route('/hello/{who}', ['who' => 'World!']));
         $collection2 = new RouteCollection();
         $collection3 = new RouteCollection();
         $collection3->add('overridden2', new Route('/new'));
@@ -211,22 +211,22 @@ public function getRouteCollections()
 
         $collection1 = new RouteCollection();
 
-        $route1 = new Route('/route1', array(), array(), array(), 'a.example.com');
+        $route1 = new Route('/route1', [], [], [], 'a.example.com');
         $collection1->add('route1', $route1);
 
-        $route2 = new Route('/c2/route2', array(), array(), array(), 'a.example.com');
+        $route2 = new Route('/c2/route2', [], [], [], 'a.example.com');
         $collection1->add('route2', $route2);
 
-        $route3 = new Route('/c2/route3', array(), array(), array(), 'b.example.com');
+        $route3 = new Route('/c2/route3', [], [], [], 'b.example.com');
         $collection1->add('route3', $route3);
 
-        $route4 = new Route('/route4', array(), array(), array(), 'a.example.com');
+        $route4 = new Route('/route4', [], [], [], 'a.example.com');
         $collection1->add('route4', $route4);
 
-        $route5 = new Route('/route5', array(), array(), array(), 'c.example.com');
+        $route5 = new Route('/route5', [], [], [], 'c.example.com');
         $collection1->add('route5', $route5);
 
-        $route6 = new Route('/route6', array(), array(), array(), null);
+        $route6 = new Route('/route6', [], [], [], null);
         $collection1->add('route6', $route6);
 
         $collection->addCollection($collection1);
@@ -235,25 +235,25 @@ public function getRouteCollections()
 
         $collection1 = new RouteCollection();
 
-        $route11 = new Route('/route11', array(), array(), array(), '{var1}.example.com');
+        $route11 = new Route('/route11', [], [], [], '{var1}.example.com');
         $collection1->add('route11', $route11);
 
-        $route12 = new Route('/route12', array('var1' => 'val'), array(), array(), '{var1}.example.com');
+        $route12 = new Route('/route12', ['var1' => 'val'], [], [], '{var1}.example.com');
         $collection1->add('route12', $route12);
 
-        $route13 = new Route('/route13/{name}', array(), array(), array(), '{var1}.example.com');
+        $route13 = new Route('/route13/{name}', [], [], [], '{var1}.example.com');
         $collection1->add('route13', $route13);
 
-        $route14 = new Route('/route14/{name}', array('var1' => 'val'), array(), array(), '{var1}.example.com');
+        $route14 = new Route('/route14/{name}', ['var1' => 'val'], [], [], '{var1}.example.com');
         $collection1->add('route14', $route14);
 
-        $route15 = new Route('/route15/{name}', array(), array(), array(), 'c.example.com');
+        $route15 = new Route('/route15/{name}', [], [], [], 'c.example.com');
         $collection1->add('route15', $route15);
 
-        $route16 = new Route('/route16/{name}', array('var1' => 'val'), array(), array(), null);
+        $route16 = new Route('/route16/{name}', ['var1' => 'val'], [], [], null);
         $collection1->add('route16', $route16);
 
-        $route17 = new Route('/route17', array(), array(), array(), null);
+        $route17 = new Route('/route17', [], [], [], null);
         $collection1->add('route17', $route17);
 
         $collection->addCollection($collection1);
@@ -279,21 +279,21 @@ public function getRouteCollections()
         // force HTTPS redirection
         $redirectCollection->add('secure', new Route(
             '/secure',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array('https')
+            ['https']
         ));
 
         // force HTTP redirection
         $redirectCollection->add('nonsecure', new Route(
             
F438
'/nonsecure',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array('http')
+            ['http']
         ));
 
         /* test case 3 */
@@ -310,57 +310,57 @@ public function getRouteCollections()
         $headMatchCasesCollection = new RouteCollection();
         $headMatchCasesCollection->add('just_head', new Route(
             '/just_head',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('HEAD')
+            [],
+            ['HEAD']
         ));
         $headMatchCasesCollection->add('head_and_get', new Route(
             '/head_and_get',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('HEAD', 'GET')
+            [],
+            ['HEAD', 'GET']
         ));
         $headMatchCasesCollection->add('get_and_head', new Route(
             '/get_and_head',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('GET', 'HEAD')
+            [],
+            ['GET', 'HEAD']
         ));
         $headMatchCasesCollection->add('post_and_head', new Route(
             '/post_and_head',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('POST', 'HEAD')
+            [],
+            ['POST', 'HEAD']
         ));
         $headMatchCasesCollection->add('put_and_post', new Route(
             '/put_and_post',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('PUT', 'POST')
+            [],
+            ['PUT', 'POST']
         ));
         $headMatchCasesCollection->add('put_and_get_and_head', new Route(
             '/put_and_post',
-            array(),
-            array(),
-            array(),
+            [],
+            [],
+            [],
             '',
-            array(),
-            array('PUT', 'GET', 'HEAD')
+            [],
+            ['PUT', 'GET', 'HEAD']
         ));
 
         /* test case 5 */
@@ -383,29 +383,29 @@ public function getRouteCollections()
 
         /* test case 6 & 7 */
         $trailingSlashCollection = new RouteCollection();
-        $trailingSlashCollection->add('simple_trailing_slash_no_methods', new Route('/trailing/simple/no-methods/', array(), array(), array(), '', array(), array()));
-        $trailingSlashCollection->add('simple_trailing_slash_GET_method', new Route('/trailing/simple/get-method/', array(), array(), array(), '', array(), array('GET')));
-        $trailingSlashCollection->add('simple_trailing_slash_HEAD_method', new Route('/trailing/simple/head-method/', array(), array(), array(), '', array(), array('HEAD')));
-        $trailingSlashCollection->add('simple_trailing_slash_POST_method', new Route('/trailing/simple/post-method/', array(), array(), array(), '', array(), array('POST')));
-        $trailingSlashCollection->add('regex_trailing_slash_no_methods', new Route('/trailing/regex/no-methods/{param}/', array(), array(), array(), '', array(), array()));
-        $trailingSlashCollection->add('regex_trailing_slash_GET_method', new Route('/trailing/regex/get-method/{param}/', array(), array(), array(), '', array(), array('GET')));
-        $trailingSlashCollection->add('regex_trailing_slash_HEAD_method', new Route('/trailing/regex/head-method/{param}/', array(), array(), array(), '', array(), array('HEAD')));
-        $trailingSlashCollection->add('regex_trailing_slash_POST_method', new Route('/trailing/regex/post-method/{param}/', array(), array(), array(), '', array(), array('POST')));
-
-        $trailingSlashCollection->add('simple_not_trailing_slash_no_methods', new Route('/not-trailing/simple/no-methods', array(), array(), array(), '', array(), array()));
-        $trailingSlashCollection->add('simple_not_trailing_slash_GET_method', new Route('/not-trailing/simple/get-method', array(), array(), array(), '', array(), array('GET')));
-        $trailingSlashCollection->add('simple_not_trailing_slash_HEAD_method', new Route('/not-trailing/simple/head-method', array(), array(), array(), '', array(), array('HEAD')));
-        $trailingSlashCollection->add('simple_not_trailing_slash_POST_method', new Route('/not-trailing/simple/post-method', array(), array(), array(), '', array(), array('POST')));
-        $trailingSlashCollection->add('regex_not_trailing_slash_no_methods', new Route('/not-trailing/regex/no-methods/{param}', array(), array(), array(), '', array(), array()));
-        $trailingSlashCollection->add('regex_not_trailing_slash_GET_method', new Route('/not-trailing/regex/get-method/{param}', array(), array(), array(), '', array(), array('GET')));
-        $trailingSlashCollection->add('regex_not_trailing_slash_HEAD_method', new Route('/not-trailing/regex/head-method/{param}', array(), array(), array(), '', array(), array('HEAD')));
-        $trailingSlashCollection->add('regex_not_trailing_slash_POST_method', new Route('/not-trailing/regex/post-method/{param}', array(), array(), array(), '', array(), array('POST')));
+        $trailingSlashCollection->add('simple_trailing_slash_no_methods', new Route('/trailing/simple/no-methods/', [], [], [], '', [], []));
+        $trailingSlashCollection->add('simple_trailing_slash_GET_method', new Route('/trailing/simple/get-method/', [], [], [], '', [], ['GET']));
+        $trailingSlashCollection->add('simple_trailing_slash_HEAD_method', new Route('/trailing/simple/head-method/', [], [], [], '', [], ['HEAD']));
+        $trailingSlashCollection->add('simple_trailing_slash_POST_method', new Route('/trailing/simple/post-method/', [], [], [], '', [], ['POST']));
+        $trailingSlashCollection->add('regex_trailing_slash_no_methods', new Route('/trailing/regex/no-methods/{param}/', [], [], [], '', [], []));
+        $trailingSlashCollection->add('regex_trailing_slash_GET_method', new Route('/trailing/regex/get-method/{param}/', [], [], [], '', [], ['GET']));
+        $trailingSlashCollection->add('regex_trailing_slash_HEAD_method', new Route('/trailing/regex/head-method/{param}/', [], [], [], '', [], ['HEAD']));
+        $trailingSlashCollection->add('regex_trailing_slash_POST_method', new Route('/trailing/regex/post-method/{param}/', [], [], [], '', [], ['POST']));
+
+        $trailingSlashCollection->add('simple_not_trailing_slash_no_methods', new Route('/not-trailing/simple/no-methods', [], [], [], '', [], []));
+        $trailingSlashCollection->add('simple_not_trailing_slash_GET_method', new Route('/not-trailing/simple/get-method', [], [], [], '', [], ['GET']));
+        $trailingSlashCollection->add('simple_not_trailing_slash_HEAD_method', new Route('/not-trailing/simple/head-method', [], [], [], '', [], ['HEAD']));
+        $trailingSlashCollection->add('simple_not_trailing_slash_POST_method', new Route('/not-trailing/simple/post-method', [], [], [], '', [], ['POST']));
+        $trailingSlashCollection->add('regex_not_trailing_slash_no_methods', new Route('/not-trailing/regex/no-methods/{param}', [], [], [], '', [], []));
+        $trailingSlashCollection->add('regex_not_trailing_slash_GET_method', new Route('/not-trailing/regex/get-method/{param}', [], [], [], '', [], ['GET']));
+        $trailingSlashCollection->add('regex_not_trailing_slash_HEAD_method', new Route('/not-trailing/regex/head-method/{param}', [], [], [], '', [], ['HEAD']));
+        $trailingSlashCollection->add('regex_not_trailing_slash_POST_method', new Route('/not-trailing/regex/post-method/{param}', [], [], [], '', [], ['POST']));
 
         /* test case 8 */
         $unicodeCollection = new RouteCollection();
-        $unicodeCollection->add('a', new Route('/{a}', array(), array('a' => 'a'), array('utf8' => false)));
-        $unicodeCollection->add('b', new Route('/{a}', array(), array('a' => '.'), array('utf8' => true)));
-        $unicodeCollection->add('c', new Route('/{a}', array(), array('a' => '.'), array('utf8' => false)));
+        $unicodeCollection->add('a', new Route('/{a}', [], ['a' => 'a'], ['utf8' => false]));
+        $unicodeCollection->add('b', new Route('/{a}', [], ['a' => '.'], ['utf8' => true]));
+        $unicodeCollection->add('c', new Route('/{a}', [], ['a' => '.'], ['utf8' => false]));
 
         /* test case 9 */
         $hostTreeCollection = new RouteCollection();
@@ -424,21 +424,21 @@ public function getRouteCollections()
         $demoCollection = new RouteCollection();
         $demoCollection->add('a', new Route('/admin/post/'));
         $demoCollection->add('b', new Route('/admin/post/new'));
-        $demoCollection->add('c', (new Route('/admin/post/{id}'))->setRequirements(array('id' => '\d+')));
-        $demoCollection->add('d', (new Route('/admin/post/{id}/edit'))->setRequirements(array('id' => '\d+')));
-        $demoCollection->add('e', (new Route('/admin/post/{id}/delete'))->setRequirements(array('id' => '\d+')));
+        $demoCollection->add('c', (new Route('/admin/post/{id}'))->setRequirements(['id' => '\d+']));
+        $demoCollection->add('d', (new Route('/admin/post/{id}/edit'))->setRequirements(['id' => '\d+']));
+        $demoCollection->add('e', (new Route('/admin/post/{id}/delete'))->setRequirements(['id' => '\d+']));
         $demoCollection->add('f', new Route('/blog/'));
         $demoCollection->add('g', new Route('/blog/rss.xml'));
-        $demoCollection->add('h', (new Route('/blog/page/{page}'))->setRequirements(array('id' => '\d+')));
-        $demoCollection->add('i', (new Route('/blog/posts/{page}'))->setRequirements(array('id' => '\d+')));
-        $demoCollection->add('j', (new Route('/blog/comments/{id}/new'))->setRequirements(array('id' => '\d+')));
+        $demoCollection->add('h', (new Route('/blog/page/{page}'))->setRequirements(['id' => '\d+']));
+        $demoCollection->add('i', (new Route('/blog/posts/{page}'))->setRequirements(['id' => '\d+']));
+        $demoCollection->add('j', (new Route('/blog/comments/{id}/new'))->setRequirements(['id' => '\d+']));
         $demoCollection->add('k', new Route('/blog/search'));
         $demoCollection->add('l', new Route('/login'));
         $demoCollection->add('m', new Route('/logout'));
         $demoCollection->addPrefix('/{_locale}');
         $demoCollection->add('n', new Route('/{_locale}'));
-        $demoCollection->addRequirements(array('_locale' => 'en|fr'));
-        $demoCollection->addDefaults(array('_locale' => 'en'));
+        $demoCollection->addRequirements(['_locale' => 'en|fr']);
+        $demoCollection->addDefaults(['_locale' => 'en']);
 
         /* test case 12 */
         $suffixCollection = new RouteCollection();
@@ -454,27 +454,27 @@ public function getRouteCollections()
         $hostCollection->add('r1', (new Route('abc{foo}'))->setHost('{foo}.exampple.com'));
         $hostCollection->add('r2', (new Route('abc{foo}'))->setHost('{foo}.exampple.com'));
 
-        return array(
-           array(new RouteCollection(), 'url_matcher0.php', array()),
-           array($collection, 'url_matcher1.php', array()),
-           array($redirectCollection, 'url_matcher2.php', array('base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher')),
-           array($rootprefixCollection, 'url_matcher3.php', array()),
-           array($headMatchCasesCollection, 'url_matcher4.php', array()),
-           array($groupOptimisedCollection, 'url_matcher5.php', array('base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher')),
-           array($trailingSlashCollection, 'url_matcher6.php', array()),
-           array($trailingSlashCollection, 'url_matcher7.php', array('base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher')),
-           array($unicodeCollection, 'url_matcher8.php', array()),
-           array($hostTreeCollection, 'url_matcher9.php', array()),
-           array($chunkedCollection, 'url_matcher10.php', array()),
-           array($demoCollection, 'url_matcher11.php', array('base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher')),
-           array($suffixCollection, 'url_matcher12.php', array()),
-           array($hostCollection, 'url_matcher13.php', array()),
-        );
+        return [
+           [new RouteCollection(), 'url_matcher0.php', []],
+           [$collection, 'url_matcher1.php', []],
+           [$redirectCollection, 'url_matcher2.php', ['base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher']],
+           [$rootprefixCollection, 'url_matcher3.php', []],
+           [$headMatchCasesCollection, 'url_matcher4.php', []],
+           [$groupOptimisedCollection, 'url_matcher5.php', ['base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher']],
+           [$trailingSlashCollection, 'url_matcher6.php', []],
+           [$trailingSlashCollection, 'url_matcher7.php', ['base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher']],
+           [$unicodeCollection, 'url_matcher8.php', []],
+           [$hostTreeCollection, 'url_matcher9.php', []],
+           [$chunkedCollection, 'url_matcher10.php', []],
+           [$demoCollection, 'url_matcher11.php', ['base_class' => 'Symfony\Component\Routing\Tests\Fixtures\RedirectableUrlMatcher']],
+           [$suffixCollection, 'url_matcher12.php', []],
+           [$hostCollection, 'url_matcher13.php', []],
+        ];
     }
 
     private function generateDumpedMatcher(RouteCollection $collection, $redirectableStub = false)
     {
-        $options = array('class' => $this->matcherClass);
+        $options = ['class' => $this->matcherClass];
 
         if ($redirectableStub) {
             $options['base_class'] = '\Symfony\Component\Routing\Tests\Matcher\Dumper\RedirectableUrlMatcherStub';
@@ -496,7 +496,7 @@ private function generateDumpedMatcher(RouteCollection $collection, $redirectabl
     public function testGenerateDumperMatcherWithObject()
     {
         $routeCollection = new RouteCollection();
-        $routeCollection->add('_', new Route('/', array(new \stdClass())));
+        $routeCollection->add('_', new Route('/', [new \stdClass()]));
         $dumper = new PhpMatcherDumper($routeCollection);
         $dumper->dump();
     }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/StaticPrefixCollectionTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/StaticPrefixCollectionTest.php
index 24e12ac177eb..fe5014fc8000 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/StaticPrefixCollectionTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/StaticPrefixCollectionTest.php
@@ -18,7 +18,7 @@ public function testGrouping(array $routes, $expected)
         foreach ($routes as $route) {
             list($path, $name) = $route;
             $staticPrefix = (new Route($path))->compile()->getStaticPrefix();
-            $collection->addRoute($staticPrefix, array($name));
+            $collection->addRoute($staticPrefix, [$name]);
         }
 
         $dumped = $this->dumpCollection($collection);
@@ -27,52 +27,52 @@ public function testGrouping(array $routes, $expected)
 
     public function routeProvider()
     {
-        return array(
-            'Simple - not nested' => array(
-                array(
-                    array('/', 'root'),
-                    array('/prefix/segment/', 'prefix_segment'),
-                    array('/leading/segment/', 'leading_segment'),
-                ),
+        return [
+            'Simple - not nested' => [
+                [
+                    ['/', 'root'],
+                    ['/prefix/segment/', 'prefix_segment'],
+                    ['/leading/segment/', 'leading_segment'],
+                ],
                 <<<EOF
 root
 prefix_segment
 leading_segment
 EOF
-            ),
-            'Nested - small group' => array(
-                array(
-                    array('/', 'root'),
-                    array('/prefix/segment/aa', 'prefix_segment'),
-                    array('/prefix/segment/bb', 'leading_segment'),
-                ),
+            ],
+            'Nested - small group' => [
+                [
+                    ['/', 'root'],
+                    ['/prefix/segment/aa', 'prefix_segment'],
+                    ['/prefix/segment/bb', 'leading_segment'],
+                ],
                 <<<EOF
 root
 /prefix/segment/
 -> prefix_segment
 -> leading_segment
 EOF
-            ),
-            'Nested - contains item at intersection' => array(
-                array(
-                    array('/', 'root'),
-                    array('/prefix/segment/', 'prefix_segment'),
-                    array('/prefix/segment/bb', 'leading_segment'),
-                ),
+            ],
+            'Nested - contains item at intersection' => [
+                [
+                    ['/', 'root'],
+                    ['/prefix/segment/', 'prefix_segment'],
+                    ['/prefix/segment/bb', 'leading_segment'],
+                ],
                 <<<EOF
 root
 /prefix/segment/
 -> prefix_segment
 -> leading_segment
 EOF
-            ),
-            'Simple one level nesting' => array(
-                array(
-                    array('/', 'root'),
-                    array('/group/segment/', 'nested_segment'),
-                    array('/group/thing/', 'some_segment'),
-                    array('/group/other/', 'other_segment'),
-                ),
+            ],
+            'Simple one level nesting' => [
+                [
+                    ['/', 'root'],
+                    ['/group/segment/', 'nested_segment'],
+                    ['/group/thing/', 'some_segment'],
+                    ['/group/other/', 'other_segment'],
+                ],
                 <<<EOF
 root
 /group/
@@ -80,17 +80,17 @@ public function routeProvider()
 -> some_segment
 -> other_segment
 EOF
-            ),
-            'Retain matching order with groups' => array(
-                array(
-                    array('/group/aa/', 'aa'),
-                    array('/group/bb/', 'bb'),
-                    array('/group/cc/', 'cc'),
-                    array('/(.*)', 'root'),
-                    array('/group/dd/', 'dd'),
-                    array('/group/ee/', 'ee'),
-                    array('/group/ff/', 'ff'),
-                ),
+            ],
+            'Retain matching order with groups' => [
+                [
+                    ['/group/aa/', 'aa'],
+                    ['/group/bb/', 'bb'],
+                    ['/group/cc/', 'cc'],
+                    ['/(.*)', 'root'],
+                    ['/group/dd/', 'dd'],
+                    ['/group/ee/', 'ee'],
+                    ['/group/ff/', 'ff'],
+                ],
                 <<<EOF
 /group/
 -> aa
@@ -102,21 +102,21 @@ public function routeProvider()
 -> ee
 -> ff
 EOF
-            ),
-            'Retain complex matching order with groups at base' => array(
-                array(
-                    array('/aaa/111/', 'first_aaa'),
-                    array('/prefixed/group/aa/', 'aa'),
-                    array('/prefixed/group/bb/', 'bb'),
-                    array('/prefixed/group/cc/', 'cc'),
-                    array('/prefixed/(.*)', 'root'),
-                    array('/prefixed/group/dd/', 'dd'),
-                    array('/prefixed/group/ee/', 'ee'),
-                    array('/prefixed/', 'parent'),
-                    array('/prefixed/group/ff/', 'ff'),
-                    array('/aaa/222/', 'second_aaa'),
-                    array('/aaa/333/', 'third_aaa'),
-                ),
+            ],
+            'Retain complex matching order with groups at base' => [
+                [
+                    ['/aaa/111/', 'first_aaa'],
+                    ['/prefixed/group/aa/', 'aa'],
+                    ['/prefixed/group/bb/', 'bb'],
+                    ['/prefixed/group/cc/', 'cc'],
+                    ['/prefixed/(.*)', 'root'],
+                    ['/prefixed/group/dd/', 'dd'],
+                    ['/prefixed/group/ee/', 'ee'],
+                    ['/prefixed/', 'parent'],
+                    ['/prefixed/group/ff/', 'ff'],
+                    ['/aaa/222/', 'second_aaa'],
+                    ['/aaa/333/', 'third_aaa'],
+                ],
                 <<<EOF
 /aaa/
 -> first_aaa
@@ -134,17 +134,17 @@ public function routeProvider()
 -> -> ff
 -> parent
 EOF
-            ),
+            ],
 
-            'Group regardless of segments' => array(
-                array(
-                    array('/aaa-111/', 'a1'),
-                    array('/aaa-222/', 'a2'),
-                    array('/aaa-333/', 'a3'),
-                    array('/group-aa/', 'g1'),
-                    array('/group-bb/', 'g2'),
-                    array('/group-cc/', 'g3'),
-                ),
+            'Group regardless of segments' => [
+                [
+                    ['/aaa-111/', 'a1'],
+                    ['/aaa-222/', 'a2'],
+                    ['/aaa-333/', 'a3'],
+                    ['/group-aa/', 'g1'],
+                    ['/group-bb/', 'g2'],
+                    ['/group-cc/', 'g3'],
+                ],
                 <<<EOF
 /aaa-
 -> a1
@@ -155,13 +155,13 @@ public function routeProvider()
 -> g2
 -> g3
 EOF
-            ),
-        );
+            ],
+        ];
     }
 
     private function dumpCollection(StaticPrefixCollection $collection, $prefix = '')
     {
-        $lines = array();
+        $lines = [];
 
         foreach ($collection->getRoutes() as $item) {
             if ($item instanceof StaticPrefixCollection) {
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
index f1d6b5325d0a..a1de37048fca 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
@@ -23,7 +23,7 @@ public function testMissingTrailingSlash()
         $coll->add('foo', new Route('/foo/'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->will($this->returnValue(array()));
+        $matcher->expects($this->once())->method('redirect')->will($this->returnValue([]));
         $matcher->match('/foo');
     }
 
@@ -33,7 +33,7 @@ public function testExtraTrailingSlash()
         $coll->add('foo', new Route('/foo'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->will($this->returnValue(array()));
+        $matcher->expects($this->once())->method('redirect')->will($this->returnValue([]));
         $matcher->match('/foo/');
     }
 
@@ -54,14 +54,14 @@ public function testRedirectWhenNoSlashForNonSafeMethod()
     public function testSchemeRedirectRedirectsToFirstScheme()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('FTP', 'HTTPS')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['FTP', 'HTTPS']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher
             ->expects($this->once())
             ->method('redirect')
             ->with('/foo', 'foo', 'ftp')
-            ->will($this->returnValue(array('_route' => 'foo')))
+            ->will($this->returnValue(['_route' => 'foo']))
         ;
         $matcher->match('/foo');
     }
@@ -69,7 +69,7 @@ public function testSchemeRedirectRedirectsToFirstScheme()
     public function testNoSchemaRedirectIfOneOfMultipleSchemesMatches()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https', 'http')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['https', 'http']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher
@@ -81,30 +81,30 @@ public function testNoSchemaRedirectIfOneOfMultipleSchemesMatches()
     public function testSchemeRedirectWithParams()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo/{bar}', array(), array(), array(), '', array('https')));
+        $coll->add('foo', new Route('/foo/{bar}', [], [], [], '', ['https']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher
             ->expects($this->once())
             ->method('redirect')
             ->with('/foo/baz', 'foo', 'https')
-            ->will($this->returnValue(array('redirect' => 'value')))
+            ->will($this->returnValue(['redirect' => 'value']))
         ;
-        $this->assertEquals(array('_route' => 'foo', 'bar' => 'baz', 'redirect' => 'value'), $matcher->match('/foo/baz'));
+        $this->assertEquals(['_route' => 'foo', 'bar' => 'baz', 'redirect' => 'value'], $matcher->match('/foo/baz'));
     }
 
     public function testSchemeRedirectForRoot()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/', array(), array(), array(), '', array('https')));
+        $coll->add('foo', new Route('/', [], [], [], '', ['https']));
 
         $matcher = $this->getUrlMatcher($coll);
         $matcher
             ->expects($this->once())
             ->method('redirect')
             ->with('/', 'foo', 'https')
-            ->will($this->returnValue(array('redirect' => 'value')));
-        $this->assertEquals(array('_route' => 'foo', 'redirect' => 'value'), $matcher->match('/'));
+            ->will($this->returnValue(['redirect' => 'value']));
+        $this->assertEquals(['_route' => 'foo', 'redirect' => 'value'], $matcher->match('/'));
     }
 
     public function testSlashRedirectWithParams()
@@ -117,9 +117,9 @@ public function testSlashRedirectWithParams()
             ->expects($this->once())
             ->method('redirect')
             ->with('/foo/baz/', 'foo', null)
-            ->will($this->returnValue(array('redirect' => 'value')))
+            ->will($this->returnValue(['redirect' => 'value']))
         ;
-        $this->assertEquals(array('_route' => 'foo', 'bar' => 'baz', 'redirect' => 'value'), $matcher->match('/foo/baz'));
+        $this->assertEquals(['_route' => 'foo', 'bar' => 'baz', 'redirect' => 'value'], $matcher->match('/foo/baz'));
     }
 
     public function testRedirectPreservesUrlEncoding()
@@ -128,17 +128,17 @@ public function testRedirectPreservesUrlEncoding()
         $coll->add('foo', new Route('/foo:bar/'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/')->willReturn(array());
+        $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/')->willReturn([]);
         $matcher->match('/foo%3Abar');
     }
 
     public function testSchemeRequirement()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['https']));
         $matcher = $this->getUrlMatcher($coll, new RequestContext());
-        $matcher->expects($this->once())->method('redirect')->with('/foo', 'foo', 'https')->willReturn(array());
-        $this->assertSame(array('_route' => 'foo'), $matcher->match('/foo'));
+        $matcher->expects($this->once())->method('redirect')->with('/foo', 'foo', 'https')->willReturn([]);
+        $this->assertSame(['_route' => 'foo'], $matcher->match('/foo'));
     }
 
     public function testFallbackPage()
@@ -148,47 +148,47 @@ public function testFallbackPage()
         $coll->add('bar', new Route('/{name}'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->with('/foo/', 'foo')->will($this->returnValue(array('_route' => 'foo')));
-        $this->assertSame(array('_route' => 'foo'), $matcher->match('/foo'));
+        $matcher->expects($this->once())->method('redirect')->with('/foo/', 'foo')->will($this->returnValue(['_route' => 'foo']));
+        $this->assertSame(['_route' => 'foo'], $matcher->match('/foo'));
 
         $coll = new RouteCollection();
         $coll->add('foo', new Route('/foo'));
         $coll->add('bar', new Route('/{name}/'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->with('/foo', 'foo')->will($this->returnValue(array('_route' => 'foo')));
-        $this->assertSame(array('_route' => 'foo'), $matcher->match('/foo/'));
+        $matcher->expects($this->once())->method('redirect')->with('/foo', 'foo')->will($this->returnValue(['_route' => 'foo']));
+        $this->assertSame(['_route' => 'foo'], $matcher->match('/foo/'));
     }
 
     public function testMissingTrailingSlashAndScheme()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', (new Route('/foo/'))->setSchemes(array('https')));
+        $coll->add('foo', (new Route('/foo/'))->setSchemes(['https']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $matcher->expects($this->once())->method('redirect')->with('/foo/', 'foo', 'https')->will($this->returnValue(array()));
+        $matcher->expects($this->once())->method('redirect')->with('/foo/', 'foo', 'https')->will($this->returnValue([]));
         $matcher->match('/foo');
     }
 
     public function testSlashAndVerbPrecedenceWithRedirection()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/api/customers/{customerId}/contactpersons', array(), array(), array(), '', array(), array('post')));
-        $coll->add('b', new Route('/api/customers/{customerId}/contactpersons/', array(), array(), array(), '', array(), array('get')));
+        $coll->add('a', new Route('/api/customers/{customerId}/contactpersons', [], [], [], '', [], ['post']));
+        $coll->add('b', new Route('/api/customers/{customerId}/contactpersons/', [], [], [], '', [], ['get']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $expected = array(
+        $expected = [
             '_route' => 'b',
             'customerId' => '123',
-        );
+        ];
         $this->assertEquals($expected, $matcher->match('/api/customers/123/contactpersons/'));
 
-        $matcher->expects($this->once())->method('redirect')->with('/api/customers/123/contactpersons/')->willReturn(array());
+        $matcher->expects($this->once())->method('redirect')->with('/api/customers/123/contactpersons/')->willReturn([]);
         $this->assertEquals($expected, $matcher->match('/api/customers/123/contactpersons'));
     }
 
     protected function getUrlMatcher(RouteCollection $routes, RequestContext $context = null)
     {
-        return $this->getMockForAbstractClass('Symfony\Component\Routing\Matcher\RedirectableUrlMatcher', array($routes, $context ?: new RequestContext()));
+        return $this->getMockForAbstractClass('Symfony\Component\Routing\Matcher\RedirectableUrlMatcher', [$routes, $context ?: new RequestContext()]);
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
index 3acb75707882..b6ef6fede13d 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
@@ -421,7 +421,7 @@ public function testSchemeRequirement()
     public function testSchemeRequirementForNonSafeMethod()
     {
         $coll = new RouteCollection();
-        $coll->add('foo', new Route('/foo', array(), array(), array(), '', array('https')));
+        $coll->add('foo', new Route('/foo', [], [], [], '', ['https']));
 
         $context = new RequestContext();
         $context->setMethod('POST');
@@ -432,10 +432,10 @@ public function testSchemeRequirementForNonSafeMethod()
     public function testSamePathWithDifferentScheme()
     {
         $coll = new RouteCollection();
-        $coll->add('https_route', new Route('/', array(), array(), array(), '', array('https')));
-        $coll->add('http_route', new Route('/', array(), array(), array(), '', array('http')));
+        $coll->add('https_route', new Route('/', [], [], [], '', ['https']));
+        $coll->add('http_route', new Route('/', [], [], [], '', ['http']));
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('_route' => 'http_route'), $matcher->match('/'));
+        $this->assertEquals(['_route' => 'http_route'], $matcher->match('/'));
     }
 
     /**
@@ -597,54 +597,54 @@ public function testSiblingRoutes()
         $coll->add('c', new Route('/a{a}'));
         $coll->add('d', (new Route('/b{a}'))->setCondition('false'));
         $coll->add('e', (new Route('/{b}{a}'))->setCondition('false'));
-        $coll->add('f', (new Route('/{b}{a}'))->setRequirements(array('b' => 'b')));
+        $coll->add('f', (new Route('/{b}{a}'))->setRequirements(['b' => 'b']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('_route' => 'c', 'a' => 'a'), $matcher->match('/aa'));
-        $this->assertEquals(array('_route' => 'f', 'b' => 'b', 'a' => 'a'), $matcher->match('/ba'));
+        $this->assertEquals(['_route' => 'c', 'a' => 'a'], $matcher->match('/aa'));
+        $this->assertEquals(['_route' => 'f', 'b' => 'b', 'a' => 'a'], $matcher->match('/ba'));
     }
 
     public function testUnicodeRoute()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/{a}', array(), array('a' => '.'), array('utf8' => false)));
-        $coll->add('b', new Route('/{a}', array(), array('a' => '.'), array('utf8' => true)));
+        $coll->add('a', new Route('/{a}', [], ['a' => '.'], ['utf8' => false]));
+        $coll->add('b', new Route('/{a}', [], ['a' => '.'], ['utf8' => true]));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('_route' => 'b', 'a' => 'é'), $matcher->match('/é'));
+        $this->assertEquals(['_route' => 'b', 'a' => 'é'], $matcher->match('/é'));
     }
 
     public function testRequirementWithCapturingGroup()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/{a}/{b}', array(), array('a' => '(a|b)')));
+        $coll->add('a', new Route('/{a}/{b}', [], ['a' => '(a|b)']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('_route' => 'a', 'a' => 'a', 'b' => 'b'), $matcher->match('/a/b'));
+        $this->assertEquals(['_route' => 'a', 'a' => 'a', 'b' => 'b'], $matcher->match('/a/b'));
     }
 
     public function testDotAllWithCatchAll()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/{id}.html', array(), array('id' => '.+')));
-        $coll->add('b', new Route('/{all}', array(), array('all' => '.+')));
+        $coll->add('a', new Route('/{id}.html', [], ['id' => '.+']));
+        $coll->add('b', new Route('/{all}', [], ['all' => '.+']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('_route' => 'a', 'id' => 'foo/bar'), $matcher->match('/foo/bar.html'));
+        $this->assertEquals(['_route' => 'a', 'id' => 'foo/bar'], $matcher->match('/foo/bar.html'));
     }
 
     public function testHostPattern()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/{app}/{action}/{unused}', array(), array(), array(), '{host}'));
+        $coll->add('a', new Route('/{app}/{action}/{unused}', [], [], [], '{host}'));
 
-        $expected = array(
+        $expected = [
             '_route' => 'a',
             'app' => 'an_app',
             'action' => 'an_action',
             'unused' => 'unused',
             'host' => 'foo',
-        );
+        ];
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'GET', 'foo'));
         $this->assertEquals($expected, $matcher->match('/an_app/an_action/unused'));
     }
@@ -652,8 +652,8 @@ public function testHostPattern()
     public function testUtf8Prefix()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/é{foo}', array(), array(), array('utf8' => true)));
-        $coll->add('b', new Route('/è{bar}', array(), array(), array('utf8' => true)));
+        $coll->add('a', new Route('/é{foo}', [], [], ['utf8' => true]));
+        $coll->add('b', new Route('/è{bar}', [], [], ['utf8' => true]));
 
         $matcher = $this->getUrlMatcher($coll);
         $this->assertEquals('a', $matcher->match('/éo')['_route']);
@@ -662,9 +662,9 @@ public function testUtf8Prefix()
     public function testUtf8AndMethodMatching()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/admin/api/list/{shortClassName}/{id}.{_format}', array(), array(), array('utf8' => true), '', array(), array('PUT')));
-        $coll->add('b', new Route('/admin/api/package.{_format}', array(), array(), array(), '', array(), array('POST')));
-        $coll->add('c', new Route('/admin/api/package.{_format}', array('_format' => 'json'), array(), array(), '', array(), array('GET')));
+        $coll->add('a', new Route('/admin/api/list/{shortClassName}/{id}.{_format}', [], [], ['utf8' => true], '', [], ['PUT']));
+        $coll->add('b', new Route('/admin/api/package.{_format}', [], [], [], '', [], ['POST']));
+        $coll->add('c', new Route('/admin/api/package.{_format}', ['_format' => 'json'], [], [], '', [], ['GET']));
 
         $matcher = $this->getUrlMatcher($coll);
         $this->assertEquals('c', $matcher->match('/admin/api/package.json')['_route']);
@@ -673,7 +673,7 @@ public function testUtf8AndMethodMatching()
     public function testHostWithDot()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/foo', array(), array(), array(), 'foo.example.com'));
+        $coll->add('a', new Route('/foo', [], [], [], 'foo.example.com'));
         $coll->add('b', new Route('/bar/{baz}'));
 
         $matcher = $this->getUrlMatcher($coll);
@@ -683,7 +683,7 @@ public function testHostWithDot()
     public function testSlashVariant()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/foo/{bar}', array(), array('bar' => '.*')));
+        $coll->add('a', new Route('/foo/{bar}', [], ['bar' => '.*']));
 
         $matcher = $this->getUrlMatcher($coll);
         $this->assertEquals('a', $matcher->match('/foo/')['_route']);
@@ -692,29 +692,29 @@ public function testSlashVariant()
     public function testSlashVariant2()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/foo/{bar}/', array(), array('bar' => '.*')));
+        $coll->add('a', new Route('/foo/{bar}/', [], ['bar' => '.*']));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertEquals(array('_route' => 'a', 'bar' => 'bar'), $matcher->match('/foo/bar/'));
+        $this->assertEquals(['_route' => 'a', 'bar' => 'bar'], $matcher->match('/foo/bar/'));
     }
 
     public function testSlashWithVerb()
     {
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/{foo}', array(), array(), array(), '', array(), array('put', 'delete')));
+        $coll->add('a', new Route('/{foo}', [], [], [], '', [], ['put', 'delete']));
         $coll->add('b', new Route('/bar/'));
 
         $matcher = $this->getUrlMatcher($coll);
-        $this->assertSame(array('_route' => 'b'), $matcher->match('/bar/'));
+        $this->assertSame(['_route' => 'b'], $matcher->match('/bar/'));
 
         $coll = new RouteCollection();
-        $coll->add('a', new Route('/dav/{foo<.*>?}', array(), array(), array(), '', array(), array('GET', 'OPTIONS')));
+        $coll->add('a', new Route('/dav/{foo<.*>?}', [], [], [], '', [], ['GET', 'OPTIONS']));
 
         $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'OPTIONS'));
-        $expected = array(
+        $expected = [
             '_route' => 'a',
             'foo' => 'files/bar',
-        );
+        ];
         $this->assertEquals($expected, $matcher->match('/dav/files/bar/'));
     }
 
diff --git a/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php b/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
index 6a40940c6ea3..f310d4e5269e 100644
--- a/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
@@ -321,9 +321,9 @@ public function testAddNamePrefix()
     public function testAddNamePrefixCanonicalRouteName()
     {
         $collection = new RouteCollection();
-        $collection->add('foo', new Route('/foo', array('_canonical_route' => 'foo')));
-        $collection->add('bar', new Route('/bar', array('_canonical_route' => 'bar')));
-        $collection->add('api_foo', new Route('/api/foo', array('_canonical_route' => 'api_foo')));
+        $collection->add('foo', new Route('/foo', ['_canonical_route' => 'foo']));
+        $collection->add('bar', new Route('/bar', ['_canonical_route' => 'bar']));
+        $collection->add('api_foo', new Route('/api/foo', ['_canonical_route' => 'api_foo']));
         $collection->addNamePrefix('api_');
 
         $this->assertEquals('api_foo', $collection->get('api_foo')->getDefault('_canonical_route'));
diff --git a/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php b/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
index 04bcdac918ac..705b5a06166c 100644
--- a/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteCompilerTest.php
@@ -34,153 +34,153 @@ public function testCompile($name, $arguments, $prefix, $regex, $variables, $tok
 
     public function provideCompileData()
     {
-        return array(
-            array(
+        return [
+            [
                 'Static route',
-                array('/foo'),
-                '/foo', '#^/foo$#sD', array(), array(
-                    array('text', '/foo'),
-                ),
-            ),
+                ['/foo'],
+                '/foo', '#^/foo$#sD', [], [
+                    ['text', '/foo'],
+                ],
+            ],
 
-            array(
+            [
                 'Route with a variable',
-                array('/foo/{bar}'),
-                '/foo', '#^/foo/(?P<bar>[^/]++)$#sD', array('bar'), array(
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}'],
+                '/foo', '#^/foo/(?P<bar>[^/]++)$#sD', ['bar'], [
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with a variable that has a default value',
-                array('/foo/{bar}', array('bar' => 'bar')),
-                '/foo', '#^/foo(?:/(?P<bar>[^/]++))?$#sD', array('bar'), array(
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}', ['bar' => 'bar']],
+                '/foo', '#^/foo(?:/(?P<bar>[^/]++))?$#sD', ['bar'], [
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with several variables',
-                array('/foo/{bar}/{foobar}'),
-                '/foo', '#^/foo/(?P<bar>[^/]++)/(?P<foobar>[^/]++)$#sD', array('bar', 'foobar'), array(
-                    array('variable', '/', '[^/]++', 'foobar'),
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}/{foobar}'],
+                '/foo', '#^/foo/(?P<bar>[^/]++)/(?P<foobar>[^/]++)$#sD', ['bar', 'foobar'], [
+                    ['variable', '/', '[^/]++', 'foobar'],
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with several variables that have default values',
-                array('/foo/{bar}/{foobar}', array('bar' => 'bar', 'foobar' => '')),
-                '/foo', '#^/foo(?:/(?P<bar>[^/]++)(?:/(?P<foobar>[^/]++))?)?$#sD', array('bar', 'foobar'), array(
-                    array('variable', '/', '[^/]++', 'foobar'),
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}/{foobar}', ['bar' => 'bar', 'foobar' => '']],
+                '/foo', '#^/foo(?:/(?P<bar>[^/]++)(?:/(?P<foobar>[^/]++))?)?$#sD', ['bar', 'foobar'], [
+                    ['variable', '/', '[^/]++', 'foobar'],
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with several variables but some of them have no default values',
-                array('/foo/{bar}/{foobar}', array('bar' => 'bar')),
-                '/foo', '#^/foo/(?P<bar>[^/]++)/(?P<foobar>[^/]++)$#sD', array('bar', 'foobar'), array(
-                    array('variable', '/', '[^/]++', 'foobar'),
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}/{foobar}', ['bar' => 'bar']],
+                '/foo', '#^/foo/(?P<bar>[^/]++)/(?P<foobar>[^/]++)$#sD', ['bar', 'foobar'], [
+                    ['variable', '/', '[^/]++', 'foobar'],
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with an optional variable as the first segment',
-                array('/{bar}', array('bar' => 'bar')),
-                '', '#^/(?P<bar>[^/]++)?$#sD', array('bar'), array(
-                    array('variable', '/', '[^/]++', 'bar'),
-                ),
-            ),
+                ['/{bar}', ['bar' => 'bar']],
+                '', '#^/(?P<bar>[^/]++)?$#sD', ['bar'], [
+                    ['variable', '/', '[^/]++', 'bar'],
+                ],
+            ],
 
-            array(
+            [
                 'Route with a requirement of 0',
-                array('/{bar}', array('bar' => null), array('bar' => '0')),
-                '', '#^/(?P<bar>0)?$#sD', array('bar'), array(
-                    array('variable', '/', '0', 'bar'),
-                ),
-            ),
+                ['/{bar}', ['bar' => null], ['bar' => '0']],
+                '', '#^/(?P<bar>0)?$#sD', ['bar'], [
+                    ['variable', '/', '0', 'bar'],
+                ],
+            ],
 
-            array(
+            [
                 'Route with an optional variable as the first segment with requirements',
-                array('/{bar}', array('bar' => 'bar'), array('bar' => '(foo|bar)')),
-                '', '#^/(?P<bar>(?:foo|bar))?$#sD', array('bar'), array(
-                    array('variable', '/', '(?:foo|bar)', 'bar'),
-                ),
-            ),
+                ['/{bar}', ['bar' => 'bar'], ['bar' => '(foo|bar)']],
+                '', '#^/(?P<bar>(?:foo|bar))?$#sD', ['bar'], [
+                    ['variable', '/', '(?:foo|bar)', 'bar'],
+                ],
+            ],
 
-            array(
+            [
                 'Route with only optional variables',
-                array('/{foo}/{bar}', array('foo' => 'foo', 'bar' => 'bar')),
-                '', '#^/(?P<foo>[^/]++)?(?:/(?P<bar>[^/]++))?$#sD', array('foo', 'bar'), array(
-                    array('variable', '/', '[^/]++', 'bar'),
-                    array('variable', '/', '[^/]++', 'foo'),
-                ),
-            ),
-
-            array(
+                ['/{foo}/{bar}', ['foo' => 'foo', 'bar' => 'bar']],
+                '', '#^/(?P<foo>[^/]++)?(?:/(?P<bar>[^/]++))?$#sD', ['foo', 'bar'], [
+                    ['variable', '/', '[^/]++', 'bar'],
+                    ['variable', '/', '[^/]++', 'foo'],
+                ],
+            ],
+
+            [
                 'Route with a variable in last position',
-                array('/foo-{bar}'),
-                '/foo-', '#^/foo\-(?P<bar>[^/]++)$#sD', array('bar'), array(
-                    array('variable', '-', '[^/]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo-{bar}'],
+                '/foo-', '#^/foo\-(?P<bar>[^/]++)$#sD', ['bar'], [
+                    ['variable', '-', '[^/]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Route with nested placeholders',
-                array('/{static{var}static}'),
-                '/{static', '#^/\{static(?P<var>[^/]+)static\}$#sD', array('var'), array(
-                    array('text', 'static}'),
-                    array('variable', '', '[^/]+', 'var'),
-                    array('text', '/{static'),
-                ),
-            ),
-
-            array(
+                ['/{static{var}static}'],
+                '/{static', '#^/\{static(?P<var>[^/]+)static\}$#sD', ['var'], [
+                    ['text', 'static}'],
+                    ['variable', '', '[^/]+', 'var'],
+                    ['text', '/{static'],
+                ],
+            ],
+
+            [
                 'Route without separator between variables',
-                array('/{w}{x}{y}{z}.{_format}', array('z' => 'default-z', '_format' => 'html'), array('y' => '(y|Y)')),
-                '', '#^/(?P<w>[^/\.]+)(?P<x>[^/\.]+)(?P<y>(?:y|Y))(?:(?P<z>[^/\.]++)(?:\.(?P<_format>[^/]++))?)?$#sD', array('w', 'x', 'y', 'z', '_format'), array(
-                    array('variable', '.', '[^/]++', '_format'),
-                    array('variable', '', '[^/\.]++', 'z'),
-                    array('variable', '', '(?:y|Y)', 'y'),
-                    array('variable', '', '[^/\.]+', 'x'),
-                    array('variable', '/', '[^/\.]+', 'w'),
-                ),
-            ),
-
-            array(
+                ['/{w}{x}{y}{z}.{_format}', ['z' => 'default-z', '_format' => 'html'], ['y' => '(y|Y)']],
+                '', '#^/(?P<w>[^/\.]+)(?P<x>[^/\.]+)(?P<y>(?:y|Y))(?:(?P<z>[^/\.]++)(?:\.(?P<_format>[^/]++))?)?$#sD', ['w', 'x', 'y', 'z', '_format'], [
+                    ['variable', '.', '[^/]++', '_format'],
+                    ['variable', '', '[^/\.]++', 'z'],
+                    ['variable', '', '(?:y|Y)', 'y'],
+                    ['variable', '', '[^/\.]+', 'x'],
+                    ['variable', '/', '[^/\.]+', 'w'],
+                ],
+            ],
+
+            [
                 'Route with a format',
-                array('/foo/{bar}.{_format}'),
-                '/foo', '#^/foo/(?P<bar>[^/\.]++)\.(?P<_format>[^/]++)$#sD', array('bar', '_format'), array(
-                    array('variable', '.', '[^/]++', '_format'),
-                    array('variable', '/', '[^/\.]++', 'bar'),
-                    array('text', '/foo'),
-                ),
-            ),
-
-            array(
+                ['/foo/{bar}.{_format}'],
+                '/foo', '#^/foo/(?P<bar>[^/\.]++)\.(?P<_format>[^/]++)$#sD', ['bar', '_format'], [
+                    ['variable', '.', '[^/]++', '_format'],
+                    ['variable', '/', '[^/\.]++', 'bar'],
+                    ['text', '/foo'],
+                ],
+            ],
+
+            [
                 'Static non UTF-8 route',
-                array("/fo\xE9"),
-                "/fo\xE9", "#^/fo\xE9$#sD", array(), array(
-                    array('text', "/fo\xE9"),
-                ),
-            ),
+                ["/fo\xE9"],
+                "/fo\xE9", "#^/fo\xE9$#sD", [], [
+                    ['text', "/fo\xE9"],
+                ],
+            ],
 
-            array(
+            [
                 'Route with an explicit UTF-8 requirement',
-                array('/{bar}', array('bar' => null), array('bar' => '.'), array('utf8' => true)),
-                '', '#^/(?P<bar>.)?$#sDu', array('bar'), array(
-                    array('variable', '/', '.', 'bar', true),
-                ),
-            ),
-        );
+                ['/{bar}', ['bar' => null], ['bar' => '.'], ['utf8' => true]],
+                '', '#^/(?P<bar>.)?$#sDu', ['bar'], [
+                    ['variable', '/', '.', 'bar', true],
+                ],
+            ],
+        ];
     }
 
     /**
@@ -201,45 +201,45 @@ public function testCompileImplicitUtf8Data($name, $arguments, $prefix, $regex,
 
     public function provideCompileImplicitUtf8Data()
     {
-        return array(
-            array(
+        return [
+            [
                 'Static UTF-8 route',
-                array('/foé'),
-                '/foé', '#^/foé$#sDu', array(), array(
-                    array('text', '/foé'),
-                ),
+                ['/foé'],
+                '/foé', '#^/foé$#sDu', [], [
+                    ['text', '/foé'],
+                ],
                 'patterns',
-            ),
+            ],
 
-            array(
+            [
                 'Route with an implicit UTF-8 requirement',
-                array('/{bar}', array('bar' => null), array('bar' => 'é')),
-                '', '#^/(?P<bar>é)?$#sDu', array('bar'), array(
-                    array('variable', '/', 'é', 'bar', true),
-                ),
+                ['/{bar}', ['bar' => null], ['bar' => 'é']],
+                '', '#^/(?P<bar>é)?$#sDu', ['bar'], [
+                    ['variable', '/', 'é', 'bar', true],
+                ],
                 'requirements',
-            ),
+            ],
 
-            array(
+            [
                 'Route with a UTF-8 class requirement',
-                array('/{bar}', array('bar' => null), array('bar' => '\pM')),
-                '', '#^/(?P<bar>\pM)?$#sDu', array('bar'), array(
-                    array('variable', '/', '\pM', 'bar', true),
-                ),
+                ['/{bar}', ['bar' => null], ['bar' => '\pM']],
+                '', '#^/(?P<bar>\pM)?$#sDu', ['bar'], [
+                    ['variable', '/', '\pM', 'bar', true],
+                ],
                 'requirements',
-            ),
+            ],
 
-            array(
+            [
                 'Route with a UTF-8 separator',
-                array('/foo/{bar}§{_format}', array(), array(), array('compiler_class' => Utf8RouteCompiler::class)),
-                '/foo', '#^/foo/(?P<bar>[^/§]++)§(?P<_format>[^/]++)$#sDu', array('bar', '_format'), array(
-                    array('variable', '§', '[^/]++', '_format', true),
-                    array('variable', '/', '[^/§]++', 'bar', true),
-                    array('text', '/foo'),
-                ),
+                ['/foo/{bar}§{_format}', [], [], ['compiler_class' => Utf8RouteCompiler::class]],
+                '/foo', '#^/foo/(?P<bar>[^/§]++)§(?P<_format>[^/]++)$#sDu', ['bar', '_format'], [
+                    ['variable', '§', '[^/]++', '_format', true],
+                    ['variable', '/', '[^/§]++', 'bar', true],
+                    ['text', '/foo'],
+                ],
                 'patterns',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -257,7 +257,7 @@ public function testRouteWithSameVariableTwice()
      */
     public function testRouteCharsetMismatch()
     {
-        $route = new Route("/\xE9/{bar}", array(), array('bar' => '.'), array('utf8' => true));
+        $route = new Route("/\xE9/{bar}", [], ['bar' => '.'], ['utf8' => true]);
 
         $compiled = $route->compile();
     }
@@ -267,7 +267,7 @@ public function testRouteCharsetMismatch()
      */
     public function testRequirementCharsetMismatch()
     {
-        $route = new Route('/foo/{bar}', array(), array('bar' => "\xE9"), array('utf8' => true));
+        $route = new Route('/foo/{bar}', [], ['bar' => "\xE9"], ['utf8' => true]);
 
         $compiled = $route->compile();
     }
@@ -294,11 +294,11 @@ public function testRouteWithVariableNameStartingWithADigit($name)
 
     public function getVariableNamesStartingWithADigit()
     {
-        return array(
-           array('09'),
-           array('123'),
-           array('1e2'),
-        );
+        return [
+           ['09'],
+           ['123'],
+           ['1e2'],
+        ];
     }
 
     /**
@@ -311,65 +311,65 @@ public function testCompileWithHost($name, $arguments, $prefix, $regex, $variabl
 
         $compiled = $route->compile();
         $this->assertEquals($prefix, $compiled->getStaticPrefix(), $name.' (static prefix)');
-        $this->assertEquals($regex, str_replace(array("\n", ' '), '', $compiled->getRegex()), $name.' (regex)');
+        $this->assertEquals($regex, str_replace(["\n", ' '], '', $compiled->getRegex()), $name.' (regex)');
         $this->assertEquals($variables, $compiled->getVariables(), $name.' (variables)');
         $this->assertEquals($pathVariables, $compiled->getPathVariables(), $name.' (path variables)');
         $this->assertEquals($tokens, $compiled->getTokens(), $name.' (tokens)');
-        $this->assertEquals($hostRegex, str_replace(array("\n", ' '), '', $compiled->getHostRegex()), $name.' (host regex)');
+        $this->assertEquals($hostRegex, str_replace(["\n", ' '], '', $compiled->getHostRegex()), $name.' (host regex)');
         $this->assertEquals($hostVariables, $compiled->getHostVariables(), $name.' (host variables)');
         $this->assertEquals($hostTokens, $compiled->getHostTokens(), $name.' (host tokens)');
     }
 
     public function provideCompileWithHostData()
     {
-        return array(
-            array(
+        return [
+            [
                 'Route with host pattern',
-                array('/hello', array(), array(), array(), 'www.example.com'),
-                '/hello', '#^/hello$#sD', array(), array(), array(
-                    array('text', '/hello'),
-                ),
-                '#^www\.example\.com$#sDi', array(), array(
-                    array('text', 'www.example.com'),
-                ),
-            ),
-            array(
+                ['/hello', [], [], [], 'www.example.com'],
+                '/hello', '#^/hello$#sD', [], [], [
+                    ['text', '/hello'],
+                ],
+                '#^www\.example\.com$#sDi', [], [
+                    ['text', 'www.example.com'],
+                ],
+            ],
+            [
                 'Route with host pattern and some variables',
-                array('/hello/{name}', array(), array(), array(), 'www.example.{tld}'),
-                '/hello', '#^/hello/(?P<name>[^/]++)$#sD', array('tld', 'name'), array('name'), array(
-                    array('variable', '/', '[^/]++', 'name'),
-                    array('text', '/hello'),
-                ),
-                '#^www\.example\.(?P<tld>[^\.]++)$#sDi', array('tld'), array(
-                    array('variable', '.', '[^\.]++', 'tld'),
-                    array('text', 'www.example'),
-                ),
-            ),
-            array(
+                ['/hello/{name}', [], [], [], 'www.example.{tld}'],
+                '/hello', '#^/hello/(?P<name>[^/]++)$#sD', ['tld', 'name'], ['name'], [
+                    ['variable', '/', '[^/]++', 'name'],
+                    ['text', '/hello'],
+                ],
+                '#^www\.example\.(?P<tld>[^\.]++)$#sDi', ['tld'], [
+                    ['variable', '.', '[^\.]++', 'tld'],
+                    ['text', 'www.example'],
+                ],
+            ],
+            [
                 'Route with variable at beginning of host',
-                array('/hello', array(), array(), array(), '{locale}.example.{tld}'),
-                '/hello', '#^/hello$#sD', array('locale', 'tld'), array(), array(
-                    array('text', '/hello'),
-                ),
-                '#^(?P<locale>[^\.]++)\.example\.(?P<tld>[^\.]++)$#sDi', array('locale', 'tld'), array(
-                    array('variable', '.', '[^\.]++', 'tld'),
-                    array('text', '.example'),
-                    array('variable', '', '[^\.]++', 'locale'),
-                ),
-            ),
-            array(
+                ['/hello', [], [], [], '{locale}.example.{tld}'],
+                '/hello', '#^/hello$#sD', ['locale', 'tld'], [], [
+                    ['text', '/hello'],
+                ],
+                '#^(?P<locale>[^\.]++)\.example\.(?P<tld>[^\.]++)$#sDi', ['locale', 'tld'], [
+                    ['variable', '.', '[^\.]++', 'tld'],
+                    ['text', '.example'],
+                    ['variable', '', '[^\.]++', 'locale'],
+                ],
+            ],
+            [
                 'Route with host variables that has a default value',
-                array('/hello', array('locale' => 'a', 'tld' => 'b'), array(), array(), '{locale}.example.{tld}'),
-                '/hello', '#^/hello$#sD', array('locale', 'tld'), array(), array(
-                    array('text', '/hello'),
-                ),
-                '#^(?P<locale>[^\.]++)\.example\.(?P<tld>[^\.]++)$#sDi', array('locale', 'tld'), array(
-                    array('variable', '.', '[^\.]++', 'tld'),
-                    array('text', '.example'),
-                    array('variable', '', '[^\.]++', 'locale'),
-                ),
-            ),
-        );
+                ['/hello', ['locale' => 'a', 'tld' => 'b'], [], [], '{locale}.example.{tld}'],
+                '/hello', '#^/hello$#sD', ['locale', 'tld'], [], [
+                    ['text', '/hello'],
+                ],
+                '#^(?P<locale>[^\.]++)\.example\.(?P<tld>[^\.]++)$#sDi', ['locale', 'tld'], [
+                    ['variable', '.', '[^\.]++', 'tld'],
+           
10000
         ['text', '.example'],
+                    ['variable', '', '[^\.]++', 'locale'],
+                ],
+            ],
+        ];
     }
 
     /**
@@ -386,19 +386,19 @@ public function testRouteWithTooLongVariableName()
      */
     public function testRemoveCapturingGroup($regex, $requirement)
     {
-        $route = new Route('/{foo}', array(), array('foo' => $requirement));
+        $route = new Route('/{foo}', [], ['foo' => $requirement]);
 
         $this->assertSame($regex, $route->compile()->getRegex());
     }
 
     public function provideRemoveCapturingGroup()
     {
-        yield array('#^/(?P<foo>a(?:b|c)(?:d|e)f)$#sD', 'a(b|c)(d|e)f');
-        yield array('#^/(?P<foo>a\(b\)c)$#sD', 'a\(b\)c');
-        yield array('#^/(?P<foo>(?:b))$#sD', '(?:b)');
-        yield array('#^/(?P<foo>(?(b)b))$#sD', '(?(b)b)');
-        yield array('#^/(?P<foo>(*F))$#sD', '(*F)');
-        yield array('#^/(?P<foo>(?:(?:foo)))$#sD', '((foo))');
+        yield ['#^/(?P<foo>a(?:b|c)(?:d|e)f)$#sD', 'a(b|c)(d|e)f'];
+        yield ['#^/(?P<foo>a\(b\)c)$#sD', 'a\(b\)c'];
+        yield ['#^/(?P<foo>(?:b))$#sD', '(?:b)'];
+        yield ['#^/(?P<foo>(?(b)b))$#sD', '(?(b)b)'];
+        yield ['#^/(?P<foo>(*F))$#sD', '(*F)'];
+        yield ['#^/(?P<foo>(?:(?:foo)))$#sD', '((foo))'];
     }
 }
 
diff --git a/src/Symfony/Component/Routing/Tests/RouteTest.php b/src/Symfony/Component/Routing/Tests/RouteTest.php
index fb52ac4b4bc0..565dbfe5681f 100644
--- a/src/Symfony/Component/Routing/Tests/RouteTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteTest.php
@@ -208,11 +208,11 @@ public function testInlineDefaultAndRequirement()
         $this->assertEquals((new Route('/foo/{bar}'))->setDefault('bar', null), new Route('/foo/{bar?}'));
         $this->assertEquals((new Route('/foo/{bar}'))->setDefault('bar', 'baz'), new Route('/foo/{bar?baz}'));
         $this->assertEquals((new Route('/foo/{bar}'))->setDefault('bar', 'baz<buz>'), new Route('/foo/{bar?baz<buz>}'));
-        $this->assertEquals((new Route('/foo/{bar}'))->setDefault('bar', 'baz'), new Route('/foo/{bar?}', array('bar' => 'baz')));
+        $this->assertEquals((new Route('/foo/{bar}'))->setDefault('bar', 'baz'), new Route('/foo/{bar?}', ['bar' => 'baz']));
 
         $this->assertEquals((new Route('/foo/{bar}'))->setRequirement('bar', '.*'), new Route('/foo/{bar<.*>}'));
         $this->assertEquals((new Route('/foo/{bar}'))->setRequirement('bar', '>'), new Route('/foo/{bar<>>}'));
-        $this->assertEquals((new Route('/foo/{bar}'))->setRequirement('bar', '\d+'), new Route('/foo/{bar<.*>}', array(), array('bar' => '\d+')));
+        $this->assertEquals((new Route('/foo/{bar}'))->setRequirement('bar', '\d+'), new Route('/foo/{bar<.*>}', [], ['bar' => '\d+']));
         $this->assertEquals((new Route('/foo/{bar}'))->setRequirement('bar', '[a-z]{2}'), new Route('/foo/{bar<[a-z]{2}>}'));
 
         $this->assertEquals((new Route('/foo/{bar}'))->setDefault('bar', null)->setRequirement('bar', '.*'), new Route('/foo/{bar<.*>?}'));
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
index fdeba46f97e6..59688ba26c9b 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
@@ -27,7 +27,7 @@ class AnonymousToken extends AbstractToken
      * @param string|object $user   The user can be a UserInterface instance, or an object implementing a __toString method or the username as a regular string
      * @param Role[]        $roles  An array of roles
      */
-    public function __construct(string $secret, $user, array $roles = array())
+    public function __construct(string $secret, $user, array $roles = [])
     {
         parent::__construct($roles);
 
@@ -59,7 +59,7 @@ public function getSecret()
      */
     public function serialize()
     {
-        return serialize(array($this->secret, parent::serialize()));
+        return serialize([$this->secret, parent::serialize()]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
index 662135a85151..ede09cb3f789 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
@@ -29,7 +29,7 @@ class PreAuthenticatedToken extends AbstractToken
      * @param string          $providerKey The provider key
      * @param (Role|string)[] $roles       An array of roles
      */
-    public function __construct($user, $credentials, string $providerKey, array $roles = array())
+    public function __construct($user, $credentials, string $providerKey, array $roles = [])
     {
         parent::__construct($roles);
 
@@ -79,7 +79,7 @@ public function eraseCredentials()
      */
     public function serialize()
     {
-        return serialize(array($this->credentials, $this->providerKey, parent::serialize()));
+        return serialize([$this->credentials, $this->providerKey, parent::serialize()]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
index fb1cdf8002c0..c1e95d479e8b 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
@@ -31,7 +31,7 @@ class UsernamePasswordToken extends AbstractToken
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct($user, $credentials, string $providerKey, array $roles = array())
+    public function __construct($user, $credentials, string $providerKey, array $roles = [])
     {
         parent::__construct($roles);
 
@@ -91,7 +91,7 @@ public function eraseCredentials()
      */
     public function serialize()
     {
-        return serialize(array($this->credentials, $this->providerKey, parent::serialize()));
+        return serialize([$this->credentials, $this->providerKey, parent::serialize()]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php b/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
index 631ff8fbf158..058085e349c9 100644
--- a/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
+++ b/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
@@ -39,10 +39,10 @@ class AccessDecisionManager implements AccessDecisionManagerInterface
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct(iterable $voters = array(), string $strategy = self::STRATEGY_AFFIRMATIVE, bool $allowIfAllAbstainDecisions = false, bool $allowIfEqualGrantedDeniedDecisions = true)
+    public function __construct(iterable $voters = [], string $strategy = self::STRATEGY_AFFIRMATIVE, bool $allowIfAllAbstainDecisions = false, bool $allowIfEqualGrantedDeniedDecisions = true)
     {
         $strategyMethod = 'decide'.ucfirst($strategy);
-        if (!\is_callable(array($this, $strategyMethod))) {
+        if (!\is_callable([$this, $strategyMethod])) {
             throw new \InvalidArgumentException(sprintf('The strategy "%s" is not supported.', $strategy));
         }
 
@@ -152,7 +152,7 @@ private function decideUnanimous(TokenInterface $token, array $attributes, $obje
         $grant = 0;
         foreach ($this->voters as $voter) {
             foreach ($attributes as $attribute) {
-                $result = $voter->vote($token, $object, array($attribute));
+                $result = $voter->vote($token, $object, [$attribute]);
 
                 switch ($result) {
                     case VoterInterface::ACCESS_GRANTED:
diff --git a/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php b/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
index 5cf02c6bf0b4..ca15a4042517 100644
--- a/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
+++ b/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php
@@ -29,7 +29,7 @@ class ExpressionLanguage extends BaseExpressionLanguage
         /**
          * {@inheritdoc}
          */
-        public function __construct(CacheItemPoolInterface $cache = null, array $providers = array())
+        public function __construct(CacheItemPoolInterface $cache = null, array $providers = [])
         {
             // prepend the default provider to let users override it easily
             array_unshift($providers, new ExpressionLanguageProvider());
diff --git a/src/Symfony/Component/Security/Core/Encoder/Argon2iPasswordEncoder.php b/src/Symfony/Component/Security/Core/Encoder/Argon2iPasswordEncoder.php
index 195fad6a235d..e91fdced864a 100644
--- a/src/Symfony/Component/Security/Core/Encoder/Argon2iPasswordEncoder.php
+++ b/src/Symfony/Component/Security/Core/Encoder/Argon2iPasswordEncoder.php
@@ -21,7 +21,7 @@
  */
 class Argon2iPasswordEncoder extends BasePasswordEncoder implements SelfSaltingEncoderInterface
 {
-    private $config = array();
+    private $config = [];
 
     /**
      * Argon2iPasswordEncoder constructor.
@@ -33,11 +33,11 @@ class Argon2iPasswordEncoder extends BasePasswordEncoder implements SelfSaltingE
     public function __construct(int $memoryCost = null, int $timeCost = null, int $threads = null)
     {
         if (\defined('PASSWORD_ARGON2I')) {
-            $this->config = array(
+            $this->config = [
                 'memory_cost' => $memoryCost ?? \PASSWORD_ARGON2_DEFAULT_MEMORY_COST,
                 'time_cost' => $timeCost ?? \PASSWORD_ARGON2_DEFAULT_TIME_COST,
                 'threads' => $threads ?? \PASSWORD_ARGON2_DEFAULT_THREADS,
-            );
+            ];
         }
     }
 
diff --git a/src/Symfony/Component/Security/Core/Encoder/EncoderFactory.php b/src/Symfony/Component/Security/Core/Encoder/EncoderFactory.php
index 4885b792ba6b..a774d7e11c77 100644
--- a/src/Symfony/Component/Security/Core/Encoder/EncoderFactory.php
+++ b/src/Symfony/Component/Security/Core/Encoder/EncoderFactory.php
@@ -86,46 +86,46 @@ private function getEncoderConfigFromAlgorithm($config)
     {
         switch ($config['algorithm']) {
             case 'plaintext':
-                return array(
+                return [
                     'class' => PlaintextPasswordEncoder::class,
-                    'arguments' => array($config['ignore_case']),
-                );
+                    'arguments' => [$config['ignore_case']],
+                ];
 
             case 'pbkdf2':
-                return array(
+                return [
                     'class' => Pbkdf2PasswordEncoder::class,
-                    'arguments' => array(
+                    'arguments' => [
                         $config['hash_algorithm'],
                         $config['encode_as_base64'],
                         $config['iterations'],
                         $config['key_length'],
-                    ),
-                );
+                    ],
+                ];
 
             case 'bcrypt':
-                return array(
+                return [
                     'class' => BCryptPasswordEncoder::class,
-                    'arguments' => array($config['cost']),
-                );
+                    'arguments' => [$config['cost']],
+                ];
 
             case 'argon2i':
-                return array(
+                return [
                     'class' => Argon2iPasswordEncoder::class,
-                    'arguments' => array(
+                    'arguments' => [
                         $config['memory_cost'],
                         $config['time_cost'],
                         $config['threads'],
-                    ),
-                );
+                    ],
+                ];
         }
 
-        return array(
+        return [
             'class' => MessageDigestPasswordEncoder::class,
-            'arguments' => array(
+            'arguments' => [
                 $config['algorithm'],
                 $config['encode_as_base64'],
                 $config['iterations'],
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
index 2b9a00ebe30c..bc9d88e43aff 100644
--- a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
+++ b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
@@ -24,9 +24,9 @@ class CustomUserMessageAuthenticationException extends AuthenticationException
 {
     private $messageKey;
 
-    private $messageData = array();
+    private $messageData = [];
 
-    public function __construct(string $message = '', array $messageData = array(), int $code = 0, \Exception $previous = null)
+    public function __construct(string $message = '', array $messageData = [], int $code = 0, \Exception $previous = null)
     {
         parent::__construct($message, $code, $previous);
 
@@ -39,7 +39,7 @@ public function __construct(string $message = '', array $messageData = array(),
      * @param string $messageKey  The message or message key
      * @param array  $messageData Data to be passed into the translator
      */
-    public function setSafeMessage($messageKey, array $messageData = array())
+    public function setSafeMessage($messageKey, array $messageData = [])
     {
         $this->messageKey = $messageKey;
         $this->messageData = $messageData;
@@ -60,11 +60,11 @@ public function getMessageData()
      */
     public function serialize()
     {
-        return serialize(array(
+        return serialize([
             parent::serialize(),
             $this->messageKey,
             $this->messageData,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
index c6576512a6db..0c50061513ae 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
@@ -36,7 +36,7 @@ class ConcreteToken extends AbstractToken
 {
     private $credentials = 'credentials_value';
 
-    public function __construct($user, array $roles = array())
+    public function __construct($user, array $roles = [])
     {
         parent::__construct($roles);
 
@@ -45,7 +45,7 @@ public function __construct($user, array $roles = array())
 
     public function serialize()
     {
-        return serialize(array($this->credentials, parent::serialize()));
+        return serialize([$this->credentials, parent::serialize()]);
     }
 
     public function unserialize($serialized)
@@ -63,7 +63,7 @@ class AbstractTokenTest extends TestCase
 {
     public function testGetUsername()
     {
-        $token = $this->getToken(array('ROLE_FOO'));
+        $token = $this->getToken(['ROLE_FOO']);
         $token->setUser('fabien');
         $this->assertEquals('fabien', $token->getUsername());
 
@@ -78,7 +78,7 @@ public function testGetUsername()
 
     public function testEraseCredentials()
     {
-        $token = $this->getToken(array('ROLE_FOO'));
+        $token = $this->getToken(['ROLE_FOO']);
 
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $user->expects($this->once())->method('eraseCredentials');
@@ -89,8 +89,8 @@ public function testEraseCredentials()
 
     public function testSerialize()
     {
-        $token = $this->getToken(array('ROLE_FOO', new Role('ROLE_BAR')));
-        $token->setAttributes(array('foo' => 'bar'));
+        $token = $this->getToken(['ROLE_FOO', new Role('ROLE_BAR')]);
+        $token->setAttributes(['foo' => 'bar']);
 
         $uToken = unserialize(serialize($token));
 
@@ -100,7 +100,7 @@ public function testSerialize()
 
     public function testSerializeWithRoleObjects()
     {
-        $user = new User('name', 'password', array(new Role('ROLE_FOO'), new Role('ROLE_BAR')));
+        $user = new User('name', 'password', [new Role('ROLE_FOO'), new Role('ROLE_BAR')]);
         $token = new ConcreteToken($user, $user->getRoles());
 
         $serialized = serialize($token);
@@ -114,9 +114,9 @@ public function testSerializeWithRoleObjects()
     public function testSerializeParent()
     {
         $user = new TestUser('fabien');
-        $token = new ConcreteToken($user, array('ROLE_FOO'));
+        $token = new ConcreteToken($user, ['ROLE_FOO']);
 
-        $parentToken = new ConcreteToken($user, array(new SwitchUserRole('ROLE_PREVIOUS', $token)));
+        $parentToken = new ConcreteToken($user, [new SwitchUserRole('ROLE_PREVIOUS', $token)]);
         $uToken = unserialize(serialize($parentToken));
 
         $this->assertEquals(
@@ -127,14 +127,14 @@ public function testSerializeParent()
 
     public function testConstructor()
     {
-        $token = $this->getToken(array('ROLE_FOO'));
-        $this->assertEquals(array(new Role('ROLE_FOO')), $token->getRoles());
+        $token = $this->getToken(['ROLE_FOO']);
+        $this->assertEquals([new Role('ROLE_FOO')], $token->getRoles());
 
-        $token = $this->getToken(array(new Role('ROLE_FOO')));
-        $this->assertEquals(array(new Role('ROLE_FOO')), $token->getRoles());
+        $token = $this->getToken([new Role('ROLE_FOO')]);
+        $this->assertEquals([new Role('ROLE_FOO')], $token->getRoles());
 
-        $token = $this->getToken(array(new Role('ROLE_FOO'), 'ROLE_BAR'));
-        $this->assertEquals(array(new Role('ROLE_FOO'), new Role('ROLE_BAR')), $token->getRoles());
+        $token = $this->getToken([new Role('ROLE_FOO'), 'ROLE_BAR']);
+        $this->assertEquals([new Role('ROLE_FOO'), new Role('ROLE_BAR')], $token->getRoles());
     }
 
     public function testAuthenticatedFlag()
@@ -151,7 +151,7 @@ public function testAuthenticatedFlag()
 
     public function testAttributes()
     {
-        $attributes = array('foo' => 'bar');
+        $attributes = ['foo' => 'bar'];
         $token = $this->getToken();
         $token->setAttributes($attributes);
 
@@ -185,11 +185,11 @@ public function getUsers()
     {
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
 
-        return array(
-            array($user),
-            array(new TestUser('foo')),
-            array('foo'),
-        );
+        return [
+            [$user],
+            [new TestUser('foo')],
+            ['foo'],
+        ];
     }
 
     /**
@@ -212,16 +212,16 @@ public function getUserChanges()
     {
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
 
-        return array(
-            array('foo', 'bar'),
-            array('foo', new TestUser('bar')),
-            array('foo', $user),
-            array($user, 'foo'),
-            array($user, new TestUser('foo')),
-            array(new TestUser('foo'), new TestUser('bar')),
-            array(new TestUser('foo'), 'bar'),
-            array(new TestUser('foo'), $user),
-        );
+        return [
+            ['foo', 'bar'],
+            ['foo', new TestUser('bar')],
+            ['foo', $user],
+            [$user, 'foo'],
+            [$user, new TestUser('foo')],
+            [new TestUser('foo'), new TestUser('bar')],
+            [new TestUser('foo'), 'bar'],
+            [new TestUser('foo'), $user],
+        ];
     }
 
     /**
@@ -247,22 +247,22 @@ public function getUserChangesAdvancedUser()
         $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $advancedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\AdvancedUserInterface')->getMock();
 
-        return array(
-            array('foo', 'bar'),
-            array('foo', new TestUser('bar')),
-            array('foo', $user),
-            array('foo', $advancedUser),
-            array($user, 'foo'),
-            array($advancedUser, 'foo'),
-            array($user, new TestUser('foo')),
-            array($advancedUser, new TestUser('foo')),
-            array(new TestUser('foo'), new TestUser('bar')),
-            array(new TestUser('foo'), 'bar'),
-            array(new TestUser('foo'), $user),
-            array(new TestUser('foo'), $advancedUser),
-            array($user, $advancedUser),
-            array($advancedUser, $user),
-        );
+        return [
+            ['foo', 'bar'],
+            ['foo', new TestUser('bar')],
+            ['foo', $user],
+            ['foo', $advancedUser],
+            [$user, 'foo'],
+            [$advancedUser, 'foo'],
+            [$user, new TestUser('foo')],
+            [$advancedUser, new TestUser('foo')],
+            [new TestUser('foo'), new TestUser('bar')],
+            [new TestUser('foo'), 'bar'],
+            [new TestUser('foo'), $user],
+            [new TestUser('foo'), $advancedUser],
+            [$user, $advancedUser],
+            [$advancedUser, $user],
+        ];
     }
 
     /**
@@ -281,8 +281,8 @@ public function testSetUserDoesNotSetAuthenticatedToFalseWhenUserDoesNotChange($
         $this->assertTrue($token->isAuthenticated());
     }
 
-    protected function getToken(array $roles = array())
+    protected function getToken(array $roles = [])
     {
-        return $this->getMockForAbstractClass('Symfony\Component\Security\Core\Authentication\Token\AbstractToken', array($roles));
+        return $this->getMockForAbstractClass('Symfony\Component\Security\Core\Authentication\Token\AbstractToken', [$roles]);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
index 192fe87e2ad9..1725ef8c486a 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/AccessDecisionManagerTest.php
@@ -22,7 +22,7 @@ class AccessDecisionManagerTest extends TestCase
      */
     public function testSetUnsupportedStrategy()
     {
-        new AccessDecisionManager(array($this->getVoter(VoterInterface::ACCESS_GRANTED)), 'fooBar');
+        new AccessDecisionManager([$this->getVoter(VoterInterface::ACCESS_GRANTED)], 'fooBar');
     }
 
     /**
@@ -33,7 +33,7 @@ public function testStrategies($strategy, $voters, $allowIfAllAbstainDecisions,
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
         $manager = new AccessDecisionManager($voters, $strategy, $allowIfAllAbstainDecisions, $allowIfEqualGrantedDeniedDecisions);
 
-        $this->assertSame($expected, $manager->decide($token, array('ROLE_FOO')));
+        $this->assertSame($expected, $manager->decide($token, ['ROLE_FOO']));
     }
 
     /**
@@ -41,27 +41,27 @@ public function testStrategies($strategy, $voters, $allowIfAllAbstainDecisions,
      */
     public function testStrategiesWith2Roles($token, $strategy, $voter, $expected)
     {
-        $manager = new AccessDecisionManager(array($voter), $strategy);
+        $manager = new AccessDecisionManager([$voter], $strategy);
 
-        $this->assertSame($expected, $manager->decide($token, array('ROLE_FOO', 'ROLE_BAR')));
+        $this->assertSame($expected, $manager->decide($token, ['ROLE_FOO', 'ROLE_BAR']));
     }
 
     public function getStrategiesWith2RolesTests()
     {
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
-        return array(
-            array($token, 'affirmative', $this->getVoter(VoterInterface::ACCESS_DENIED), false),
-            array($token, 'affirmative', $this->getVoter(VoterInterface::ACCESS_GRANTED), true),
+        return [
+            [$token, 'affirmative', $this->getVoter(VoterInterface::ACCESS_DENIED), false],
+            [$token, 'affirmative', $this->getVoter(VoterInterface::ACCESS_GRANTED), true],
 
-            array($token, 'consensus', $this->getVoter(VoterInterface::ACCESS_DENIED), false),
-            array($token, 'consensus', $this->getVoter(VoterInterface::ACCESS_GRANTED), true),
+            [$token, 'consensus', $this->getVoter(VoterInterface::ACCESS_DENIED), false],
+            [$token, 'consensus', $this->getVoter(VoterInterface::ACCESS_GRANTED), true],
 
-            array($token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_DENIED, VoterInterface::ACCESS_DENIED), false),
-            array($token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_DENIED, VoterInterface::ACCESS_GRANTED), false),
-            array($token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_GRANTED, VoterInterface::ACCESS_DENIED), false),
-            array($token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_GRANTED, VoterInterface::ACCESS_GRANTED), true),
-        );
+            [$token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_DENIED, VoterInterface::ACCESS_DENIED), false],
+            [$token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_DENIED, VoterInterface::ACCESS_GRANTED), false],
+            [$token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_GRANTED, VoterInterface::ACCESS_DENIED), false],
+            [$token, 'unanimous', $this->getVoterFor2Roles($token, VoterInterface::ACCESS_GRANTED, VoterInterface::ACCESS_GRANTED), true],
+        ];
     }
 
     protected function getVoterFor2Roles($token, $vote1, $vote2)
@@ -69,10 +69,10 @@ protected function getVoterFor2Roles($token, $vote1, $vote2)
         $voter = $this->getMockBuilder('Symfony\Component\Security\Core\Authorization\Voter\VoterInterface')->getMock();
         $voter->expects($this->any())
               ->method('vote')
-              ->will($this->returnValueMap(array(
-                  array($token, null, array('ROLE_FOO'), $vote1),
-                  array($token, null, array('ROLE_BAR'), $vote2),
-              )))
+              ->will($this->returnValueMap([
+                  [$token, null, ['ROLE_FOO'], $vote1],
+                  [$token, null, ['ROLE_BAR'], $vote2],
+              ]))
         ;
 
         return $voter;
@@ -80,42 +80,42 @@ protected function getVoterFor2Roles($token, $vote1, $vote2)
 
     public function getStrategyTests()
     {
-        return array(
+        return [
             // affirmative
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(1, 0, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(1, 2, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 1, 0), false, true, false),
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 0, 1), false, true, false),
-            array(AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 0, 1), true, true, true),
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(1, 0, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(1, 2, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 1, 0), false, true, false],
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 0, 1), false, true, false],
+            [AccessDecisionManager::STRATEGY_AFFIRMATIVE, $this->getVoters(0, 0, 1), true, true, true],
 
             // consensus
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(1, 0, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(1, 2, 0), false, true, false),
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 1, 0), false, true, true),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(1, 0, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(1, 2, 0), false, true, false],
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 1, 0), false, true, true],
 
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(0, 0, 1), false, true, false),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(0, 0, 1), false, true, false],
 
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(0, 0, 1), true, true, true),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(0, 0, 1), true, true, true],
 
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 1), false, true, true),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 1), false, true, true],
 
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 0), false, false, false),
-            array(AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 1), false, false, false),
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 0), false, false, false],
+            [AccessDecisionManager::STRATEGY_CONSENSUS, $this->getVoters(2, 2, 1), false, false, false],
 
             // unanimous
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 0, 0), false, true, true),
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 0, 1), false, true, true),
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 1, 0), false, true, false),
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 0, 0), false, true, true],
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 0, 1), false, true, true],
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(1, 1, 0), false, true, false],
 
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(0, 0, 2), false, true, false),
-            array(AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(0, 0, 2), true, true, true),
-        );
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(0, 0, 2), false, true, false],
+            [AccessDecisionManager::STRATEGY_UNANIMOUS, $this->getVoters(0, 0, 2), true, true, true],
+        ];
     }
 
     protected function getVoters($grants, $denies, $abstains)
     {
-        $voters = array();
+        $voters = [];
         for ($i = 0; $i < $grants; ++$i) {
             $voters[] = $this->getVoter(VoterInterface::ACCESS_GRANTED);
         }
diff --git a/src/Symfony/Component/Security/Core/Tests/User/UserCheckerTest.php b/src/Symfony/Component/Security/Core/Tests/User/UserCheckerTest.php
index 1d1d98ed123a..ceacb3b2a375 100644
--- a/src/Symfony/Component/Security/Core/Tests/User/UserCheckerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/User/UserCheckerTest.php
@@ -50,7 +50,7 @@ public function testCheckPostAuthPassAdvancedUser()
     public function testCheckPostAuthCredentialsExpired()
     {
         $checker = new UserChecker();
-        $checker->checkPostAuth(new User('John', 'password', array(), true, true, false, true));
+        $checker->checkPostAuth(new User('John', 'password', [], true, true, false, true));
     }
 
     /**
@@ -90,7 +90,7 @@ public function testCheckPreAuthPassAdvancedUser()
     public function testCheckPreAuthAccountLocked()
     {
         $checker = new UserChecker();
-        $checker->checkPreAuth(new User('John', 'password', array(), true, true, false, false));
+        $checker->checkPreAuth(new User('John', 'password', [], true, true, false, false));
     }
 
     /**
@@ -114,7 +114,7 @@ public function testCheckPreAuthAccountLockedAdvancedUser()
     public function testCheckPreAuthDisabled()
     {
         $checker = new UserChecker();
-        $checker->checkPreAuth(new User('John', 'password', array(), false, true, false, true));
+        $checker->checkPreAuth(new User('John', 'password', [], false, true, false, true));
     }
 
     /**
@@ -139,7 +139,7 @@ public function testCheckPreAuthDisabledAdvancedUser()
     public function testCheckPreAuthAccountExpired()
     {
         $checker = new UserChecker();
-        $checker->checkPreAuth(new User('John', 'password', array(), true, false, true, true));
+        $checker->checkPreAuth(new User('John', 'password', [], true, false, true, true));
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Tests/User/UserTest.php b/src/Symfony/Component/Security/Core/Tests/User/UserTest.php
index efe1f4c099f0..e132d016600d 100644
--- a/src/Symfony/Component/Security/Core/Tests/User/UserTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/User/UserTest.php
@@ -117,16 +117,16 @@ public function testIsEqualTo($expectation, $a, $b)
 
     public static function isEqualToData()
     {
-        return array(
-            array(true, new User('username', 'password'), new User('username', 'password')),
-            array(true, new User('username', 'password', array('ROLE')), new User('username', 'password')),
-            array(true, new User('username', 'password', array('ROLE')), new User('username', 'password', array('NO ROLE'))),
-            array(false, new User('diff', 'diff'), new User('username', 'password')),
-            array(false, new User('diff', 'diff', array(), false), new User('username', 'password')),
-            array(false, new User('diff', 'diff', array(), false, false), new User('username', 'password')),
-            array(false, new User('diff', 'diff', array(), false, false, false), new User('username', 'password')),
-            array(false, new User('diff', 'diff', array(), false, false, false, false), new User('username', 'password')),
-        );
+        return [
+            [true, new User('username', 'password'), new User('username', 'password')],
+            [true, new User('username', 'password', ['ROLE']), new User('username', 'password')],
+            [true, new User('username', 'password', ['ROLE']), new User('username', 'password', ['NO ROLE'])],
+            [false, new User('diff', 'diff'), new User('username', 'password')],
+            [false, new User('diff', 'diff', [], false), new User('username', 'password')],
+            [false, new User('diff', 'diff', [], false, false), new User('username', 'password')],
+            [false, new User('diff', 'diff', [], false, false, false), new User('username', 'password')],
+            [false, new User('diff', 'diff', [], false, false, false, false), new User('username', 'password')],
+        ];
     }
 
     public function testIsEqualToWithDifferentUser()
diff --git a/src/Symfony/Component/Security/Core/User/LdapUserProvider.php b/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
index db098faff12f..400f1b988c8c 100644
--- a/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
+++ b/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
@@ -35,7 +35,7 @@ class LdapUserProvider implements UserProviderInterface
     private $defaultSearch;
     private $passwordAttribute;
 
-    public function __construct(LdapInterface $ldap, string $baseDn, string $searchDn = null, string $searchPassword = null, array $defaultRoles = array(), ?string $uidKey = 'sAMAccountName', string $filter = '({uid_key}={username})', string $passwordAttribute = null)
+    public function __construct(LdapInterface $ldap, string $baseDn, string $searchDn = null, string $searchPassword = null, array $defaultRoles = [], ?string $uidKey = 'sAMAccountName', string $filter = '({uid_key}={username})', string $passwordAttribute = null)
     {
         if (null === $uidKey) {
             $uidKey = 'sAMAccountName';
diff --git a/src/Symfony/Component/Security/Core/User/User.php b/src/Symfony/Component/Security/Core/User/User.php
index 4d612798f213..18faeb7af040 100644
--- a/src/Symfony/Component/Security/Core/User/User.php
+++ b/src/Symfony/Component/Security/Core/User/User.php
@@ -28,7 +28,7 @@ final class User implements UserInterface, EquatableInterface, AdvancedUserInter
     private $accountNonLocked;
     private $roles;
 
-    public function __construct(?string $username, ?string $password, array $roles = array(), bool $enabled = true, bool $userNonExpired = true, bool $credentialsNonExpired = true, bool $userNonLocked = true)
+    public function __construct(?string $username, ?string $password, array $roles = [], bool $enabled = true, bool $userNonExpired = true, bool $credentialsNonExpired = true, bool $userNonLocked = true)
     {
         if ('' === $username || null === $username) {
             throw new \InvalidArgumentException('The username cannot be empty.');
diff --git a/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php b/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
index db02bcd18e46..663a82e8c5fe 100644
--- a/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
@@ -65,7 +65,7 @@ public function __construct(GuardAuthenticatorHandler $guardHandler, Authenticat
     public function handle(GetResponseEvent $event)
     {
         if (null !== $this->logger) {
-            $context = array('firewall_key' => $this->providerKey);
+            $context = ['firewall_key' => $this->providerKey];
 
             if ($this->guardAuthenticators instanceof \Countable || \is_array($this->guardAuthenticators)) {
                 $context['authenticators'] = \count($this->guardAuthenticators);
@@ -83,7 +83,7 @@ public function handle(GetResponseEvent $event)
 
             if ($event->hasResponse()) {
                 if (null !== $this->logger) {
-                    $this->logger->debug('The "{authenticator}" authenticator set the response. Any later authenticator will not be called', array('authenticator' => \get_class($guardAuthenticator)));
+                    $this->logger->debug('The "{authenticator}" authenticator set the response. Any later authenticator will not be called', ['authenticator' => \get_class($guardAuthenticator)]);
                 }
 
                 break;
@@ -96,20 +96,20 @@ private function executeGuardAuthenticator($uniqueGuardKey, AuthenticatorInterfa
         $request = $event->getRequest();
         try {
             if (null !== $this->logger) {
-                $this->logger->debug('Checking support on guard authenticator.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Checking support on guard authenticator.', ['firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             // abort the execution of the authenticator if it doesn't support the request
             if (!$guardAuthenticator->supports($request)) {
                 if (null !== $this->logger) {
-                    $this->logger->debug('Guard authenticator does not support the request.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                    $this->logger->debug('Guard authenticator does not support the request.', ['firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)]);
                 }
 
                 return;
             }
 
             if (null !== $this->logger) {
-                $this->logger->debug('Calling getCredentials() on guard authenticator.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Calling getCredentials() on guard authenticator.', ['firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             // allow the authenticator to fetch authentication info from the request
@@ -123,14 +123,14 @@ private function executeGuardAuthenticator($uniqueGuardKey, AuthenticatorInterfa
             $token = new PreAuthenticationGuardToken($credentials, $uniqueGuardKey);
 
             if (null !== $this->logger) {
-                $this->logger->debug('Passing guard token information to the GuardAuthenticationProvider', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Passing guard token information to the GuardAuthenticationProvider', ['firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)]);
             }
             // pass the token into the AuthenticationManager system
             // this indirectly calls GuardAuthenticationProvider::authenticate()
             $token = $this->authenticationManager->authenticate($token);
 
             if (null !== $this->logger) {
-                $this->logger->info('Guard authentication successful!', array('token' => $token, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->info('Guard authentication successful!', ['token' => $token, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             // sets the token on the token storage, etc
@@ -139,7 +139,7 @@ private function executeGuardAuthenticator($uniqueGuardKey, AuthenticatorInterfa
             // oh no! Authentication failed!
 
             if (null !== $this->logger) {
-                $this->logger->info('Guard authentication failed.', array('exception' => $e, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->info('Guard authentication failed.', ['exception' => $e, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             $response = $this->guardHandler->handleAuthenticationFailure($e, $request, $guardAuthenticator, $this->providerKey);
@@ -155,13 +155,13 @@ private function executeGuardAuthenticator($uniqueGuardKey, AuthenticatorInterfa
         $response = $this->guardHandler->handleAuthenticationSuccess($token, $request, $guardAuthenticator, $this->providerKey);
         if ($response instanceof Response) {
             if (null !== $this->logger) {
-                $this->logger->debug('Guard authenticator set success response.', array('response' => $response, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Guard authenticator set success response.', ['response' => $response, 'authenticator' => \get_class($guardAuthenticator)]);
             }
 
             $event->setResponse($response);
         } else {
             if (null !== $this->logger) {
-                $this->logger->debug('Guard authenticator set no success response: request continues.', array('authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Guard authenticator set no success response: request continues.', ['authenticator' => \get_class($guardAuthenticator)]);
             }
         }
 
@@ -185,7 +185,7 @@ private function triggerRememberMe(AuthenticatorInterface $guardAuthenticator, R
     {
         if (null === $this->rememberMeServices) {
             if (null !== $this->logger) {
-                $this->logger->debug('Remember me skipped: it is not configured for the firewall.', array('authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Remember me skipped: it is not configured for the firewall.', ['authenticator' => \get_class($guardAuthenticator)]);
             }
 
             return;
@@ -193,7 +193,7 @@ private function triggerRememberMe(AuthenticatorInterface $guardAuthenticator, R
 
         if (!$guardAuthenticator->supportsRememberMe()) {
             if (null !== $this->logger) {
-                $this->logger->debug('Remember me skipped: your authenticator does not support it.', array('authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Remember me skipped: your authenticator does not support it.', ['authenticator' => \get_class($guardAuthenticator)]);
             }
 
             return;
diff --git a/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php b/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
index 87c1512c47e6..5a95eb6ae750 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
@@ -39,7 +39,7 @@ public function testHandleSuccess()
         $authenticateToken = $this->getMockBuilder(TokenInterface::class)->getMock();
         $providerKey = 'my_firewall';
 
-        $credentials = array('username' => 'weaverryan', 'password' => 'all_your_base');
+        $credentials = ['username' => 'weaverryan', 'password' => 'all_your_base'];
 
         $authenticator
             ->expects($this->once())
@@ -75,7 +75,7 @@ public function testHandleSuccess()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -115,7 +115,7 @@ public function testHandleSuccessStopsAfterResponseIsSet()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             'my_firewall',
-            array($authenticator1, $authenticator2),
+            [$authenticator1, $authenticator2],
             $this->logger
         );
 
@@ -137,7 +137,7 @@ public function testHandleSuccessWithRememberMe()
             ->expects($this->once())
             ->method('getCredentials')
             ->with($this->equalTo($this->request))
-            ->will($this->returnValue(array('username' => 'anything_not_empty')));
+            ->will($this->returnValue(['username' => 'anything_not_empty']));
 
         $this->authenticationManager
             ->expects($this->once())
@@ -154,7 +154,7 @@ public function testHandleSuccessWithRememberMe()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -199,7 +199,7 @@ public function testHandleCatchesAuthenticationException()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -225,7 +225,7 @@ public function testSupportsReturnFalseSkipAuth()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -255,7 +255,7 @@ public function testReturnNullFromGetCredentials()
             $this->guardAuthenticatorHandler,
             $this->authenticationManager,
             $providerKey,
-            array($authenticator),
+            [$authenticator],
             $this->logger
         );
 
@@ -272,11 +272,11 @@ protected function setUp()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $this->request = new Request(array(), array(), array(), array(), array(), array());
+        $this->request = new Request([], [], [], [], [], []);
 
         $this->event = $this->getMockBuilder('Symfony\Component\HttpKernel\Event\GetResponseEvent')
             ->disableOriginalConstructor()
-            ->setMethods(array('getRequest'))
+            ->setMethods(['getRequest'])
             ->getMock();
         $this->event
             ->expects($this->any())
diff --git a/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php b/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
index 12de6e8c26de..622ab4336e53 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Provider/GuardAuthenticationProviderTest.php
@@ -35,7 +35,7 @@ public function testAuthenticate()
         $authenticatorA = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
         $authenticatorB = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
         $authenticatorC = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
-        $authenticators = array($authenticatorA, $authenticatorB, $authenticatorC);
+        $authenticators = [$authenticatorA, $authenticatorB, $authenticatorC];
 
         // called 2 times - for authenticator A and B (stops on B because of match)
         $this->preAuthenticationToken->expects($this->exactly(2))
@@ -43,10 +43,10 @@ public function testAuthenticate()
             // it will return the "1" index, which will match authenticatorB
             ->will($this->returnValue('my_cool_firewall_1'));
 
-        $enteredCredentials = array(
+        $enteredCredentials = [
             'username' => '_weaverryan_test_user',
             'password' => 'guard_auth_ftw',
-        );
+        ];
         $this->preAuthenticationToken->expects($this->atLeastOnce())
             ->method('getCredentials')
             ->will($this->returnValue($enteredCredentials));
@@ -116,7 +116,7 @@ public function testCheckCredentialsReturningNonTrueFailsAuthentication()
             // authentication fails :(
             ->will($this->returnValue(null));
 
-        $provider = new GuardAuthenticationProvider(array($authenticator), $this->userProvider, $providerKey, $this->userChecker);
+        $provider = new GuardAuthenticationProvider([$authenticator], $this->userProvider, $providerKey, $this->userChecker);
         $provider->authenticate($this->preAuthenticationToken);
     }
 
@@ -130,10 +130,10 @@ public function testGuardWithNoLongerAuthenticatedTriggersLogout()
         // create a token and mark it as NOT authenticated anymore
         // this mimics what would happen if a user "changed" between request
         $mockedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
-        $token = new PostAuthenticationGuardToken($mockedUser, $providerKey, array('ROLE_USER'));
+        $token = new PostAuthenticationGuardToken($mockedUser, $providerKey, ['ROLE_USER']);
         $token->setAuthenticated(false);
 
-        $provider = new GuardAuthenticationProvider(array(), $this->userProvider, $providerKey, $this->userChecker);
+        $provider = new GuardAuthenticationProvider([], $this->userProvider, $providerKey, $this->userChecker);
         $actualToken = $provider->authenticate($token);
     }
 
@@ -141,7 +141,7 @@ public function testSupportsChecksGuardAuthenticatorsTokenOrigin()
     {
         $authenticatorA = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
         $authenticatorB = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
-        $authenticators = array($authenticatorA, $authenticatorB);
+        $authenticators = [$authenticatorA, $authenticatorB];
 
         $mockedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $provider = new GuardAuthenticationProvider($authenticators, $this->userProvider, 'first_firewall', $this->userChecker);
@@ -162,7 +162,7 @@ public function testSupportsChecksGuardAuthenticatorsTokenOrigin()
     public function testAuthenticateFailsOnNonOriginatingToken()
     {
         $authenticatorA = $this->getMockBuilder(AuthenticatorInterface::class)->getMock();
-        $authenticators = array($authenticatorA);
+        $authenticators = [$authenticatorA];
 
         $mockedUser = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $provider = new GuardAuthenticationProvider($authenticators, $this->userProvider, 'first_firewall', $this->userChecker);
diff --git a/src/Symfony/Component/Security/Http/Firewall/AbstractAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/AbstractAuthenticationListener.php
index cdf91242dd17..a46e59063de7 100644
--- a/src/Symfony/Component/Security/Http/Firewall/AbstractAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/AbstractAuthenticationListener.php
@@ -66,7 +66,7 @@ abstract class AbstractAuthenticationListener implements ListenerInterface
     /**
      * @throws \InvalidArgumentException
      */
-    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, string $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = array(), LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null)
+    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, string $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = [], LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null)
     {
         if (empty($providerKey)) {
             throw new \InvalidArgumentException('$providerKey must not be empty.');
@@ -78,7 +78,7 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationM
         $this->providerKey = $providerKey;
         $this->successHandler = $successHandler;
         $this->failureHandler = $failureHandler;
-        $this->options = array_merge(array(
+        $this->options = array_merge([
             'check_path' => '/login_check',
             'login_path' => '/login',
             'always_use_default_target_path' => false,
@@ -88,7 +88,7 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationM
             'failure_path' => null,
             'failure_forward' => false,
             'require_previous_session' => true,
-        ), $options);
+        ], $options);
         $this->logger = $logger;
         $this->dispatcher = $dispatcher;
         $this->httpUtils = $httpUtils;
@@ -171,7 +171,7 @@ abstract protected function attemptAuthentication(Request $request);
     private function onFailure(Request $request, AuthenticationException $failed)
     {
         if (null !== $this->logger) {
-            $this->logger->info('Authentication request failed.', array('exception' => $failed));
+            $this->logger->info('Authentication request failed.', ['exception' => $failed]);
         }
 
         $token = $this->tokenStorage->getToken();
@@ -191,7 +191,7 @@ private function onFailure(Request $request, AuthenticationException $failed)
     private function onSuccess(Request $request, TokenInterface $token)
     {
         if (null !== $this->logger) {
-            $this->logger->info('User has been authenticated successfully.', array('username' => $token->getUsername()));
+            $this->logger->info('User has been authenticated successfully.', ['username' => $token->getUsername()]);
         }
 
         $this->tokenStorage->setToken($token);
diff --git a/src/Symfony/Component/Security/Http/Firewall/ContextListener.php b/src/Symfony/Component/Security/Http/Firewall/ContextListener.php
index 87b76ae43718..7f3fbbaec379 100644
--- a/src/Symfony/Component/Security/Http/Firewall/ContextListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/ContextListener.php
@@ -79,7 +79,7 @@ public function setLogoutOnUserChange($logoutOnUserChange)
     public function handle(GetResponseEvent $event)
     {
         if (!$this->registered && null !== $this->dispatcher && $event->isMasterRequest()) {
-            $this->dispatcher->addListener(KernelEvents::RESPONSE, array($this, 'onKernelResponse'));
+            $this->dispatcher->addListener(KernelEvents::RESPONSE, [$this, 'onKernelResponse']);
             $this->registered = true;
         }
 
@@ -95,17 +95,17 @@ public function handle(GetResponseEvent $event)
         $token = $this->safelyUnserialize($token);
 
         if (null !== $this->logger) {
-            $this->logger->debug('Read existing security token from the session.', array(
+            $this->logger->debug('Read existing security token from the session.', [
                 'key' => $this->sessionKey,
                 'token_class' => \is_object($token) ? \get_class($token) : null,
-            ));
+            ]);
         }
 
         if ($token instanceof TokenInterface) {
             $token = $this->refreshUser($token);
         } elseif (null !== $token) {
             if (null !== $this->logger) {
-                $this->logger->warning('Expected a security token from the session, got something else.', array('key' => $this->sessionKey, 'received' => $token));
+                $this->logger->warning('Expected a security token from the session, got something else.', ['key' => $this->sessionKey, 'received' => $token]);
             }
 
             $token = null;
@@ -129,7 +129,7 @@ public function onKernelResponse(FilterResponseEvent $event)
             return;
         }
 
-        $this->dispatcher->removeListener(KernelEvents::RESPONSE, array($this, 'onKernelResponse'));
+        $this->dispatcher->removeListener(KernelEvents::RESPONSE, [$this, 'onKernelResponse']);
         $this->registered = false;
         $session = $request->getSession();
 
@@ -141,7 +141,7 @@ public function onKernelResponse(FilterResponseEvent $event)
             $session->set($this->sessionKey, serialize($token));
 
             if (null !== $this->logger) {
-                $this->logger->debug('Stored the security token in the session.', array('key' => $this->sessionKey));
+                $this->logger->debug('Stored the security token in the session.', ['key' => $this->sessionKey]);
             }
         }
     }
@@ -178,7 +178,7 @@ protected function refreshUser(TokenInterface $token)
                     $userDeauthenticated = true;
 
                     if (null !== $this->logger) {
-                        $this->logger->debug('Cannot refresh token because user has changed.', array('username' => $refreshedUser->getUsername(), 'provider' => \get_class($provider)));
+                        $this->logger->debug('Cannot refresh token because user has changed.', ['username' => $refreshedUser->getUsername(), 'provider' => \get_class($provider)]);
                     }
 
                     continue;
@@ -187,7 +187,7 @@ protected function refreshUser(TokenInterface $token)
                 $token->setUser($refreshedUser);
 
                 if (null !== $this->logger) {
-                    $context = array('provider' => \get_class($provider), 'username' => $refreshedUser->getUsername());
+                    $context = ['provider' => \get_class($provider), 'username' => $refreshedUser->getUsername()];
 
                     foreach ($token->getRoles() as $role) {
                         if ($role instanceof SwitchUserRole) {
@@ -204,7 +204,7 @@ protected function refreshUser(TokenInterface $token)
                 // let's try the next user provider
             } catch (UsernameNotFoundException $e) {
                 if (null !== $this->logger) {
-                    $this->logger->warning('Username could not be found in the selected user provider.', array('username' => $e->getUsername(), 'provider' => \get_class($provider)));
+                    $this->logger->warning('Username could not be found in the selected user provider.', ['username' => $e->getUsername(), 'provider' => \get_class($provider)]);
                 }
 
                 $userNotFoundByProvider = true;
@@ -230,7 +230,7 @@ private function safelyUnserialize($serializedToken)
     {
         $e = $token = null;
         $prevUnserializeHandler = ini_set('unserialize_callback_func', __CLASS__.'::handleUnserializeCallback');
-        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) use (&$prevErrorHandler) {
+        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$prevErrorHandler) {
             if (__FILE__ === $file) {
                 throw new \UnexpectedValueException($msg, 0x37313bc);
             }
@@ -249,7 +249,7 @@ private function safelyUnserialize($serializedToken)
                 throw $e;
             }
             if ($this->logger) {
-                $this->logger->warning('Failed to unserialize the security token from the session.', array('key' => $this->sessionKey, 'received' => $serializedToken, 'exception' => $e));
+                $this->logger->warning('Failed to unserialize the security token from the session.', ['key' => $this->sessionKey, 'received' => $serializedToken, 'exception' => $e]);
             }
         }
 
diff --git a/src/Symfony/Component/Security/Http/Firewall/SimpleFormAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/SimpleFormAuthenticationListener.php
index 48db757a94bf..0c807832adc9 100644
--- a/src/Symfony/Component/Security/Http/Firewall/SimpleFormAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/SimpleFormAuthenticationListener.php
@@ -40,7 +40,7 @@ class SimpleFormAuthenticationListener extends AbstractAuthenticationListener
     /**
      * @throws \InvalidArgumentException In case no simple authenticator is provided
      */
-    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, string $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = array(), LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null, CsrfTokenManagerInterface $csrfTokenManager = null, SimpleFormAuthenticatorInterface $simpleAuthenticator = null)
+    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, string $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = [], LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null, CsrfTokenManagerInterface $csrfTokenManager = null, SimpleFormAuthenticatorInterface $simpleAuthenticator = null)
     {
         if (!$simpleAuthenticator) {
             throw new \InvalidArgumentException('Missing simple authenticator');
@@ -49,13 +49,13 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationM
         $this->simpleAuthenticator = $simpleAuthenticator;
         $this->csrfTokenManager = $csrfTokenManager;
 
-        $options = array_merge(array(
+        $options = array_merge([
             'username_parameter' => '_username',
             'password_parameter' => '_password',
             'csrf_parameter' => '_csrf_token',
             'csrf_token_id' => 'authenticate',
             'post_only' => true,
-        ), $options);
+        ], $options);
 
         parent::__construct($tokenStorage, $authenticationManager, $sessionStrategy, $httpUtils, $providerKey, $successHandler, $failureHandler, $options, $logger, $dispatcher);
     }
diff --git a/src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php b/src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php
index 5500bdd878db..80082b0099c7 100644
--- a/src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/SwitchUserListener.php
@@ -128,7 +128,7 @@ private function attemptSwitchUser(Request $request, $username)
 
         $user = $this->provider->loadUserByUsername($username);
 
-        if (false === $this->accessDecisionManager->decide($token, array($this->role), $user)) {
+        if (false === $this->accessDecisionManager->decide($token, [$this->role], $user)) {
             $exception = new AccessDeniedException();
             $exception->setAttributes($this->role);
 
@@ -136,7 +136,7 @@ private function attemptSwitchUser(
10000
Request $request, $username)
         }
 
         if (null !== $this->logger) {
-            $this->logger->info('Attempting to switch to user.', array('username' => $username));
+            $this->logger->info('Attempting to switch to user.', ['username' => $username]);
         }
 
         $this->userChecker->checkPostAuth($user);
diff --git a/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php
index 639d5af17d98..f6ce869b299d 100644
--- a/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php
@@ -39,15 +39,15 @@ class UsernamePasswordFormAuthenticationListener extends AbstractAuthenticationL
 {
     private $csrfTokenManager;
 
-    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, string $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = array(), LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null, CsrfTokenManagerInterface $csrfTokenManager = null)
+    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, SessionAuthenticationStrategyInterface $sessionStrategy, HttpUtils $httpUtils, string $providerKey, AuthenticationSuccessHandlerInterface $successHandler, AuthenticationFailureHandlerInterface $failureHandler, array $options = [], LoggerInterface $logger = null, EventDispatcherInterface $dispatcher = null, CsrfTokenManagerInterface $csrfTokenManager = null)
     {
-        parent::__construct($tokenStorage, $authenticationManager, $sessionStrategy, $httpUtils, $providerKey, $successHandler, $failureHandler, array_merge(array(
+        parent::__construct($tokenStorage, $authenticationManager, $sessionStrategy, $httpUtils, $providerKey, $successHandler, $failureHandler, array_merge([
             'username_parameter' => '_username',
             'password_parameter' => '_password',
             'csrf_parameter' => '_csrf_token',
             'csrf_token_id' => 'authenticate',
             'post_only' => true,
-        ), $options), $logger, $dispatcher);
+        ], $options), $logger, $dispatcher);
 
         $this->csrfTokenManager = $csrfTokenManager;
     }
diff --git a/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordJsonAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordJsonAuthenticationListener.php
index f0f1e42d7ab0..f7b69f0da539 100644
--- a/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordJsonAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/UsernamePasswordJsonAuthenticationListener.php
@@ -55,7 +55,7 @@ class UsernamePasswordJsonAuthenticationListener implements ListenerInterface
     private $propertyAccessor;
     private $sessionStrategy;
 
-    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, HttpUtils $httpUtils, string $providerKey, AuthenticationSuccessHandlerInterface $successHandler = null, AuthenticationFailureHandlerInterface $failureHandler = null, array $options = array(), LoggerInterface $logger = null, EventDispatcherInterface $eventDispatcher = null, PropertyAccessorInterface $propertyAccessor = null)
+    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager, HttpUtils $httpUtils, string $providerKey, AuthenticationSuccessHandlerInterface $successHandler = null, AuthenticationFailureHandlerInterface $failureHandler = null, array $options = [], LoggerInterface $logger = null, EventDispatcherInterface $eventDispatcher = null, PropertyAccessorInterface $propertyAccessor = null)
     {
         $this->tokenStorage = $tokenStorage;
         $this->authenticationManager = $authenticationManager;
@@ -65,7 +65,7 @@ public function __construct(TokenStorageInterface $tokenStorage, AuthenticationM
         $this->failureHandler = $failureHandler;
         $this->logger = $logger;
         $this->eventDispatcher = $eventDispatcher;
-        $this->options = array_merge(array('username_path' => 'username', 'password_path' => 'password'), $options);
+        $this->options = array_merge(['username_path' => 'username', 'password_path' => 'password'], $options);
         $this->propertyAccessor = $propertyAccessor ?: PropertyAccess::createPropertyAccessor();
     }
 
@@ -138,7 +138,7 @@ public function handle(GetResponseEvent $event)
     private function onSuccess(Request $request, TokenInterface $token)
     {
         if (null !== $this->logger) {
-            $this->logger->info('User has been authenticated successfully.', array('username' => $token->getUsername()));
+            $this->logger->info('User has been authenticated successfully.', ['username' => $token->getUsername()]);
         }
 
         $this->migrateSession($request, $token);
@@ -166,7 +166,7 @@ private function onSuccess(Request $request, TokenInterface $token)
     private function onFailure(Request $request, AuthenticationException $failed)
     {
         if (null !== $this->logger) {
-            $this->logger->info('Authentication request failed.', array('exception' => $failed));
+            $this->logger->info('Authentication request failed.', ['exception' => $failed]);
         }
 
         $token = $this->tokenStorage->getToken();
@@ -175,7 +175,7 @@ private function onFailure(Request $request, AuthenticationException $failed)
         }
 
         if (!$this->failureHandler) {
-            return new JsonResponse(array('error' => $failed->getMessageKey()), 401);
+            return new JsonResponse(['error' => $failed->getMessageKey()], 401);
         }
 
         $response = $this->failureHandler->onAuthenticationFailure($request, $failed);
diff --git a/src/Symfony/Component/Security/Http/HttpUtils.php b/src/Symfony/Component/Security/Http/HttpUtils.php
index 82f6123c59a4..4c5817d8b8af 100644
--- a/src/Symfony/Component/Security/Http/HttpUtils.php
+++ b/src/Symfony/Component/Security/Http/HttpUtils.php
@@ -76,7 +76,7 @@ public function createRedirectResponse(Request $request, $path, $status = 302)
      */
     public function createRequest(Request $request, $path)
     {
-        $newRequest = Request::create($this->generateUri($request, $path), 'get', array(), $request->cookies->all(), array(), $request->server->all());
+        $newRequest = Request::create($this->generateUri($request, $path), 'get', [], $request->cookies->all(), [], $request->server->all());
 
         static $setSession;
 
diff --git a/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php b/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
index e81191823cfe..696182d1cda3 100644
--- a/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
+++ b/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
@@ -28,7 +28,7 @@ class LogoutUrlGenerator
     private $requestStack;
     private $router;
     private $tokenStorage;
-    private $listeners = array();
+    private $listeners = [];
     private $currentFirewall;
 
     public function __construct(RequestStack $requestStack = null, UrlGeneratorInterface $router = null, TokenStorageInterface $tokenStorage = null)
@@ -50,7 +50,7 @@ public function __construct(RequestStack $requestStack = null, UrlGeneratorInter
      */
     public function registerListener($key, $logoutPath, $csrfTokenId, $csrfParameter, CsrfTokenManagerInterface $csrfTokenManager = null, string $context = null)
     {
-        $this->listeners[$key] = array($logoutPath, $csrfTokenId, $csrfParameter, $csrfTokenManager, $context);
+        $this->listeners[$key] = [$logoutPath, $csrfTokenId, $csrfParameter, $csrfTokenManager, $context];
     }
 
     /**
@@ -83,7 +83,7 @@ public function getLogoutUrl($key = null)
      */
     public function setCurrentFirewall($key, $context = null)
     {
-        $this->currentFirewall = array($key, $context);
+        $this->currentFirewall = [$key, $context];
     }
 
     /**
@@ -102,7 +102,7 @@ private function generateLogoutUrl($key, $referenceType)
             throw new \LogicException('Unable to generate the logout URL without a path.');
         }
 
-        $parameters = null !== $csrfTokenManager ? array($csrfParameter => (string) $csrfTokenManager->getToken($csrfTokenId)) : array();
+        $parameters = null !== $csrfTokenManager ? [$csrfParameter => (string) $csrfTokenManager->getToken($csrfTokenId)] : [];
 
         if ('/' === $logoutPath[0]) {
             if (!$this->requestStack) {
diff --git a/src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php b/src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php
index 34ba4ef77515..2d8ef715fdb1 100644
--- a/src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php
+++ b/src/Symfony/Component/Security/Http/RememberMe/AbstractRememberMeServices.php
@@ -35,10 +35,10 @@ abstract class AbstractRememberMeServices implements RememberMeServicesInterface
     const COOKIE_DELIMITER = ':';
 
     protected $logger;
-    protected $options = array(
+    protected $options = [
         'secure' => false,
         'httponly' => true,
-    );
+    ];
     private $providerKey;
     private $secret;
     private $userProviders;
@@ -46,7 +46,7 @@ abstract class AbstractRememberMeServices implements RememberMeServicesInterface
     /**
      * @throws \InvalidArgumentException
      */
-    public function __construct(array $userProviders, string $secret, string $providerKey, array $options = array(), LoggerInterface $logger = null)
+    public function __construct(array $userProviders, string $secret, string $providerKey, array $options = [], LoggerInterface $logger = null)
     {
         if (empty($secret)) {
             throw new \InvalidArgumentException('$secret must not be empty.');
@@ -121,19 +121,19 @@ final public function autoLogin(Request $request): ?TokenInterface
             throw $e;
         } catch (UsernameNotFoundException $e) {
             if (null !== $this->logger) {
-                $this->logger->info('User for remember-me cookie not found.', array('exception' => $e));
+                $this->logger->info('User for remember-me cookie not found.', ['exception' => $e]);
             }
 
             $this->loginFail($request, $e);
         } catch (UnsupportedUserException $e) {
             if (null !== $this->logger) {
-                $this->logger->warning('User class for remember-me cookie not supported.', array('exception' => $e));
+                $this->logger->warning('User class for remember-me cookie not supported.', ['exception' => $e]);
             }
 
             $this->loginFail($request, $e);
         } catch (AuthenticationException $e) {
             if (null !== $this->logger) {
-                $this->logger->debug('Remember-Me authentication failed.', array('exception' => $e));
+                $this->logger->debug('Remember-Me authentication failed.', ['exception' => $e]);
             }
 
             $this->loginFail($request, $e);
@@ -268,7 +268,7 @@ protected function encodeCookie(array $cookieParts)
     protected function cancelCookie(Request $request)
     {
         if (null !== $this->logger) {
-            $this->logger->debug('Clearing remember-me cookie.', array('name' => $this->options['name']));
+            $this->logger->debug('Clearing remember-me cookie.', ['name' => $this->options['name']]);
         }
 
         $request->attributes->set(self::COOKIE_ATTR_NAME, new Cookie($this->options['name'], null, 1, $this->options['path'], $this->options['domain'], $this->options['secure'], $this->options['httponly']));
@@ -288,7 +288,7 @@ protected function isRememberMeRequested(Request $request)
         $parameter = ParameterBagUtils::getRequestParameterValue($request, $this->options['remember_me_parameter']);
 
         if (null === $parameter && null !== $this->logger) {
-            $this->logger->debug('Did not send remember-me cookie.', array('parameter' => $this->options['remember_me_parameter']));
+            $this->logger->debug('Did not send remember-me cookie.', ['parameter' => $this->options['remember_me_parameter']]);
         }
 
         return 'true' === $parameter || 'on' === $parameter || '1' === $parameter || 'yes' === $parameter || true === $parameter;
diff --git a/src/Symfony/Component/Security/Http/Tests/Controller/UserValueResolverTest.php b/src/Symfony/Component/Security/Http/Tests/Controller/UserValueResolverTest.php
index 264272b12579..25108e482d28 100644
--- a/src/Symfony/Component/Security/Http/Tests/Controller/UserValueResolverTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Controller/UserValueResolverTest.php
@@ -66,7 +66,7 @@ public function testResolve()
         $metadata = new ArgumentMetadata('foo', UserInterface::class, false, false, null);
 
         $this->assertTrue($resolver->supports(Request::create('/'), $metadata));
-        $this->assertSame(array($user), iterator_to_array($resolver->resolve(Request::create('/'), $metadata)));
+        $this->assertSame([$user], iterator_to_array($resolver->resolve(Request::create('/'), $metadata)));
     }
 
     public function testIntegration()
@@ -77,8 +77,8 @@ public function testIntegration()
         $tokenStorage = new TokenStorage();
         $tokenStorage->setToken($token);
 
-        $argumentResolver = new ArgumentResolver(null, array(new UserValueResolver($tokenStorage)));
-        $this->assertSame(array($user), $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user) {}));
+        $argumentResolver = new ArgumentResolver(null, [new UserValueResolver($tokenStorage)]);
+        $this->assertSame([$user], $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user) {}));
     }
 
     public function testIntegrationNoUser()
@@ -87,8 +87,8 @@ public function testIntegrationNoUser()
         $tokenStorage = new TokenStorage();
         $tokenStorage->setToken($token);
 
-        $argumentResolver = new ArgumentResolver(null, array(new UserValueResolver($tokenStorage), new DefaultValueResolver()));
-        $this->assertSame(array(null), $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user = null) {}));
+        $argumentResolver = new ArgumentResolver(null, [new UserValueResolver($tokenStorage), new DefaultValueResolver()]);
+        $this->assertSame([null], $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user = null) {}));
     }
 }
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php
index 02acb2490e47..e3c55d33ed1c 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php
@@ -42,7 +42,7 @@ public function testItRequiresContextKey()
     {
         new ContextListener(
             $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock(),
-            array(),
+            [],
             ''
         );
     }
@@ -53,7 +53,7 @@ public function testItRequiresContextKey()
      */
     public function testUserProvidersNeedToImplementAnInterface()
     {
-        $this->handleEventWithPreviousSession(new TokenStorage(), array(new \stdClass()));
+        $this->handleEventWithPreviousSession(new TokenStorage(), [new \stdClass()]);
     }
 
     public function testOnKernelResponseWillAddSession()
@@ -112,7 +112,7 @@ public function testOnKernelResponseWithoutSession()
             new Response()
         );
 
-        $listener = new ContextListener($tokenStorage, array(), 'session', null, new EventDispatcher());
+        $listener = new ContextListener($tokenStorage, [], 'session', null, new EventDispatcher());
         $listener->onKernelResponse($event);
 
         $this->assertTrue($session->isStarted());
@@ -131,7 +131,7 @@ public function testOnKernelResponseWithoutSessionNorToken()
             new Response()
         );
 
-        $listener = new ContextListener(new TokenStorage(), array(), 'session', null, new EventDispatcher());
+        $listener = new ContextListener(new TokenStorage(), [], 'session', null, new EventDispatcher());
         $listener->onKernelResponse($event);
 
         $this->assertFalse($session->isStarted());
@@ -166,19 +166,19 @@ public function testInvalidTokenInSession($token)
             ->method('setToken')
             ->with(null);
 
-        $listener = new ContextListener($tokenStorage, array(), 'key123');
+        $listener = new ContextListener($tokenStorage, [], 'key123');
         $listener->handle($event);
     }
 
     public function provideInvalidToken()
     {
-        return array(
-            array('foo'),
-            array('O:8:"NotFound":0:{}'),
-            array(serialize(new \__PHP_Incomplete_Class())),
-            array(serialize(null)),
-            array(null),
-        );
+        return [
+            ['foo'],
+            ['O:8:"NotFound":0:{}'],
+            [serialize(new \__PHP_Incomplete_Class())],
+            [serialize(null)],
+            [null],
+        ];
     }
 
     public function testHandleAddsKernelResponseListener()
@@ -189,7 +189,7 @@ public function testHandleAddsKernelResponseListener()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $listener = new ContextListener($tokenStorage, array(), 'key123', null, $dispatcher);
+        $listener = new ContextListener($tokenStorage, [], 'key123', null, $dispatcher);
 
         $event->expects($this->any())
             ->method('isMasterRequest')
@@ -200,7 +200,7 @@ public function testHandleAddsKernelResponseListener()
 
         $dispatcher->expects($this->once())
             ->method('addListener')
-            ->with(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'));
+            ->with(KernelEvents::RESPONSE, [$listener, 'onKernelResponse']);
 
         $listener->handle($event);
     }
@@ -213,7 +213,7 @@ public function testOnKernelResponseListenerRemovesItself()
             ->disableOriginalConstructor()
             ->getMock();
 
-        $listener = new ContextListener($tokenStorage, array(), 'key123', null, $dispatcher);
+        $listener = new ContextListener($tokenStorage, [], 'key123', null, $dispatcher);
 
         $request = $this->getMockBuilder('Symfony\Component\HttpFoundation\Request')->getMock();
         $request->expects($this->any())
@@ -229,7 +229,7 @@ public function testOnKernelResponseListenerRemovesItself()
 
         $dispatcher->expects($this->once())
             ->method('removeListener')
-            ->with(KernelEvents::RESPONSE, array($listener, 'onKernelResponse'));
+            ->with(KernelEvents::RESPONSE, [$listener, 'onKernelResponse']);
 
         $listener->onKernelResponse($event);
     }
@@ -247,7 +247,7 @@ public function testHandleRemovesTokenIfNoPreviousSessionWasFound()
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage->expects($this->once())->method('setToken')->with(null);
 
-        $listener = new ContextListener($tokenStorage, array(), 'key123');
+        $listener = new ContextListener($tokenStorage, [], 'key123');
         $listener->handle($event);
     }
 
@@ -255,7 +255,7 @@ public function testIfTokenIsDeauthenticated()
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)));
+        $this->handleEventWithPreviousSession($tokenStorage, [new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)]);
 
         $this->assertNull($tokenStorage->getToken());
     }
@@ -265,7 +265,7 @@ public function testIfTokenIsNotDeauthenticated()
         $tokenStorage = new TokenStorage();
         $badRefreshedUser = new User('foobar', 'baz');
         $goodRefreshedUser = new User('foobar', 'bar');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new SupportingUserProvider($badRefreshedUser), new SupportingUserProvider($goodRefreshedUser)), $goodRefreshedUser, true);
+        $this->handleEventWithPreviousSession($tokenStorage, [new SupportingUserProvider($badRefreshedUser), new SupportingUserProvider($goodRefreshedUser)], $goodRefreshedUser, true);
         $this->assertSame($goodRefreshedUser, $tokenStorage->getToken()->getUser());
     }
 
@@ -273,7 +273,7 @@ public function testTryAllUserProvidersUntilASupportingUserProviderIsFound()
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)), $refreshedUser);
+        $this->handleEventWithPreviousSession($tokenStorage, [new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)], $refreshedUser);
 
         $this->assertSame($refreshedUser, $tokenStorage->getToken()->getUser());
     }
@@ -282,7 +282,7 @@ public function testNextSupportingUserProviderIsTriedIfPreviousSupportingUserPro
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, array(new SupportingUserProvider(), new SupportingUserProvider($refreshedUser)), $refreshedUser);
+        $this->handleEventWithPreviousSession($tokenStorage, [new SupportingUserProvider(), new SupportingUserProvider($refreshedUser)], $refreshedUser);
 
         $this->assertSame($refreshedUser, $tokenStorage->getToken()->getUser());
     }
@@ -290,7 +290,7 @@ public function testNextSupportingUserProviderIsTriedIfPreviousSupportingUserPro
     public function testTokenIsSetToNullIfNoUserWasLoadedByTheRegisteredUserProviders()
     {
         $tokenStorage = new TokenStorage();
-        $this->handleEventWithPreviousSession($tokenStorage, array(new NotSupportingUserProvider(), new SupportingUserProvider()));
+        $this->handleEventWithPreviousSession($tokenStorage, [new NotSupportingUserProvider(), new SupportingUserProvider()]);
 
         $this->assertNull($tokenStorage->getToken());
     }
@@ -300,14 +300,14 @@ public function testTokenIsSetToNullIfNoUserWasLoadedByTheRegisteredUserProvider
      */
     public function testRuntimeExceptionIsThrownIfNoSupportingUserProviderWasRegistered()
     {
-        $this->handleEventWithPreviousSession(new TokenStorage(), array(new NotSupportingUserProvider(), new NotSupportingUserProvider()));
+        $this->handleEventWithPreviousSession(new TokenStorage(), [new NotSupportingUserProvider(), new NotSupportingUserProvider()]);
     }
 
     public function testAcceptsProvidersAsTraversable()
     {
         $tokenStorage = new TokenStorage();
         $refreshedUser = new User('foobar', 'baz');
-        $this->handleEventWithPreviousSession($tokenStorage, new \ArrayObject(array(new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser))), $refreshedUser);
+        $this->handleEventWithPreviousSession($tokenStorage, new \ArrayObject([new NotSupportingUserProvider(), new SupportingUserProvider($refreshedUser)]), $refreshedUser);
 
         $this->assertSame($refreshedUser, $tokenStorage->getToken()->getUser());
     }
@@ -334,7 +334,7 @@ protected function runSessionOnKernelResponse($newToken, $original = null)
             new Response()
         );
 
-        $listener = new ContextListener($tokenStorage, array(), 'session', null, new EventDispatcher());
+        $listener = new ContextListener($tokenStorage, [], 'session', null, new EventDispatcher());
         $listener->onKernelResponse($event);
 
         return $session;
@@ -344,7 +344,7 @@ private function handleEventWithPreviousSession(TokenStorageInterface $tokenStor
     {
         $user = $user ?: new User('foo', 'bar');
         $session = new Session(new MockArraySessionStorage());
-        $session->set('_security_context_key', serialize(new UsernamePasswordToken($user, '', 'context_key', array('ROLE_USER'))));
+        $session->set('_security_context_key', serialize(new UsernamePasswordToken($user, '', 'context_key', ['ROLE_USER'])));
 
         $request = new Request();
         $request->setSession($session);
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
index bdab1f24d58e..2be2cc220763 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
@@ -81,7 +81,7 @@ public function testExitUserThrowsAuthenticationExceptionIfNoCurrentToken()
      */
     public function testExitUserThrowsAuthenticationExceptionIfOriginalTokenCannotBeFound()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);
@@ -92,15 +92,15 @@ public function testExitUserThrowsAuthenticationExceptionIfOriginalTokenCannotBe
 
     public function testExitUserUpdatesToken()
     {
-        $originalToken = new UsernamePasswordToken('username', '', 'key', array());
-        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', array(new SwitchUserRole('ROLE_PREVIOUS', $originalToken))));
+        $originalToken = new UsernamePasswordToken('username', '', 'key', []);
+        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', [new SwitchUserRole('ROLE_PREVIOUS', $originalToken)]));
 
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);
 
         $listener = new SwitchUserListener($this->tokenStorage, $this->userProvider, $this->userChecker, 'provider123', $this->accessDecisionManager);
         $listener->handle($this->event);
 
-        $this->assertSame(array(), $this->request->query->all());
+        $this->assertSame([], $this->request->query->all());
         $this->assertSame('', $this->request->server->get('QUERY_STRING'));
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\RedirectResponse', $this->event->getResponse());
         $this->assertSame($this->request->getUri(), $this->event->getResponse()->getTargetUrl());
@@ -118,7 +118,7 @@ public function testExitUserDispatchesEventWithRefreshedUser()
             ->with($originalUser)
             ->willReturn($refreshedUser);
         $originalToken = new UsernamePasswordToken($originalUser, '', 'key');
-        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', array(new SwitchUserRole('ROLE_PREVIOUS', $originalToken))));
+        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', [new SwitchUserRole('ROLE_PREVIOUS', $originalToken)]));
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);
 
         $dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
@@ -142,7 +142,7 @@ public function testExitUserDoesNotDispatchEventWithStringUser()
             ->expects($this->never())
             ->method('refreshUser');
         $originalToken = new UsernamePasswordToken($originalUser, '', 'key');
-        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', array(new SwitchUserRole('ROLE_PREVIOUS', $originalToken))));
+        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', [new SwitchUserRole('ROLE_PREVIOUS', $originalToken)]));
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);
 
         $dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
@@ -160,13 +160,13 @@ public function testExitUserDoesNotDispatchEventWithStringUser()
      */
     public function testSwitchUserIsDisallowed()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', 'kuba');
 
         $this->accessDecisionManager->expects($this->once())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'))
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'])
             ->will($this->returnValue(false));
 
         $listener = new SwitchUserListener($this->tokenStorage, $this->userProvider, $this->userChecker, 'provider123', $this->accessDecisionManager);
@@ -175,14 +175,14 @@ public function testSwitchUserIsDisallowed()
 
     public function testSwitchUser()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
-        $user = new User('username', 'password', array());
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
+        $user = new User('username', 'password', []);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', 'kuba');
 
         $this->accessDecisionManager->expects($this->once())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'), $user)
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'], $user)
             ->will($this->returnValue(true));
 
         $this->userProvider->expects($this->once())
@@ -194,25 +194,25 @@ public function testSwitchUser()
         $listener = new SwitchUserListener($this->tokenStorage, $this->userProvider, $this->userChecker, 'provider123', $this->accessDecisionManager);
         $listener->handle($this->event);
 
-        $this->assertSame(array(), $this->request->query->all());
+        $this->assertSame([], $this->request->query->all());
         $this->assertSame('', $this->request->server->get('QUERY_STRING'));
         $this->assertInstanceOf('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken', $this->tokenStorage->getToken());
     }
 
     public function testSwitchUserKeepsOtherQueryStringParameters()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
-        $user = new User('username', 'password', array());
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
+        $user = new User('username', 'password', []);
 
         $this->tokenStorage->setToken($token);
-        $this->request->query->replace(array(
+        $this->request->query->replace([
             '_switch_user' => 'kuba',
             'page' => 3,
             'section' => 2,
-        ));
+        ]);
 
         $this->accessDecisionManager->expects($this->once())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'), $user)
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'], $user)
             ->will($this->returnValue(true));
 
         $this->userProvider->expects($this->once())
@@ -230,17 +230,17 @@ public function testSwitchUserKeepsOtherQueryStringParameters()
 
     public function testSwitchUserWithReplacedToken()
     {
-        $user = new User('username', 'password', array());
-        $token = new UsernamePasswordToken($user, '', 'provider123', array('ROLE_FOO'));
+        $user = new User('username', 'password', []);
+        $token = new UsernamePasswordToken($user, '', 'provider123', ['ROLE_FOO']);
 
-        $user = new User('replaced', 'password', array());
-        $replacedToken = new UsernamePasswordToken($user, '', 'provider123', array('ROLE_BAR'));
+        $user = new User('replaced', 'password', []);
+        $replacedToken = new UsernamePasswordToken($user, '', 'provider123', ['ROLE_BAR']);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', 'kuba');
 
         $this->accessDecisionManager->expects($this->any())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'), $user)
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'], $user)
             ->will($this->returnValue(true));
 
         $this->userProvider->expects($this->any())
@@ -269,14 +269,14 @@ public function testSwitchUserWithReplacedToken()
 
     public function testSwitchUserStateless()
     {
-        $token = new UsernamePasswordToken('username', '', 'key', array('ROLE_FOO'));
-        $user = new User('username', 'password', array());
+        $token = new UsernamePasswordToken('username', '', 'key', ['ROLE_FOO']);
+        $user = new User('username', 'password', []);
 
         $this->tokenStorage->setToken($token);
         $this->request->query->set('_switch_user', 'kuba');
 
         $this->accessDecisionManager->expects($this->once())
-            ->method('decide')->with($token, array('ROLE_ALLOWED_TO_SWITCH'), $user)
+            ->method('decide')->with($token, ['ROLE_ALLOWED_TO_SWITCH'], $user)
             ->will($this->returnValue(true));
 
         $this->userProvider->expects($this->once())
diff --git a/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php b/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
index d4cfa4b11c9f..0100a6282fa0 100644
--- a/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/ChainDecoder.php
@@ -24,10 +24,10 @@
  */
 class ChainDecoder implements ContextAwareDecoderInterface
 {
-    protected $decoders = array();
-    protected $decoderByFormat = array();
+    protected $decoders = [];
+    protected $decoderByFormat = [];
 
-    public function __construct(array $decoders = array())
+    public function __construct(array $decoders = [])
     {
         $this->decoders = $decoders;
     }
@@ -35,7 +35,7 @@ public function __construct(array $decoders = array())
     /**
      * {@inheritdoc}
      */
-    final public function decode($data, $format, array $context = array())
+    final public function decode($data, $format, array $context = [])
     {
         return $this->getDecoder($format, $context)->decode($data, $format, $context);
     }
@@ -43,7 +43,7 @@ final public function decode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function supportsDecoding($format, array $context = array())
+    public function supportsDecoding($format, array $context = [])
     {
         try {
             $this->getDecoder($format, $context);
diff --git a/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php b/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
index 9745587c9580..eb1b84ad3c53 100644
--- a/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/ChainEncoder.php
@@ -24,10 +24,10 @@
  */
 class ChainEncoder implements ContextAwareEncoderInterface
 {
-    protected $encoders = array();
-    protected $encoderByFormat = array();
+    protected $encoders = [];
+    protected $encoderByFormat = [];
 
-    public function __construct(array $encoders = array())
+    public function __construct(array $encoders = [])
     {
         $this->encoders = $encoders;
     }
@@ -35,7 +35,7 @@ public function __construct(array $encoders = array())
     /**
      * {@inheritdoc}
      */
-    final public function encode($data, $format, array $context = array())
+    final public function encode($data, $format, array $context = [])
     {
         return $this->getEncoder($format, $context)->encode($data, $format, $context);
     }
@@ -43,7 +43,7 @@ final public function encode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function supportsEncoding($format, array $context = array())
+    public function supportsEncoding($format, array $context = [])
     {
         try {
             $this->getEncoder($format, $context);
@@ -62,7 +62,7 @@ public function supportsEncoding($format, array $context = array())
      *
      * @return bool
      */
-    public function needsNormalization($format, array $context = array())
+    public function needsNormalization($format, array $context = [])
     {
         $encoder = $this->getEncoder($format, $context);
 
diff --git a/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php b/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
index 2813bf2da917..c66ace1b1665 100644
--- a/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
@@ -35,7 +35,7 @@ class CsvEncoder implements EncoderInterface, DecoderInterface
     private $escapeChar;
     private $keySeparator;
     private $escapeFormulas;
-    private $formulasStartCharacters = array('=', '-', '+', '@');
+    private $formulasStartCharacters = ['=', '-', '+', '@'];
 
     public function __construct(string $delimiter = ',', string $enclosure = '"', string $escapeChar = '\\', string $keySeparator = '.', bool $escapeFormulas = false)
     {
@@ -49,20 +49,20 @@ public function __construct(string $delimiter = ',', string $enclosure = '"', st
     /**
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         $handle = fopen('php://temp,', 'w+');
 
         if (!\is_array($data)) {
-            $data = array(array($data));
+            $data = [[$data]];
         } elseif (empty($data)) {
-            $data = array(array());
+            $data = [[]];
         } else {
             // Sequential arrays of arrays are considered as collections
             $i = 0;
             foreach ($data as $key => $value) {
                 if ($i !== $key || !\is_array($value)) {
-                    $data = array($data);
+                    $data = [$data];
                     break;
                 }
 
@@ -73,7 +73,7 @@ public function encode($data, $format, array $context = array())
         list($delimiter, $enclosure, $escapeChar, $keySeparator, $headers, $escapeFormulas) = $this->getCsvOptions($context);
 
         foreach ($data as &$value) {
-            $flattened = array();
+            $flattened = [];
             $this->flatten($value, $flattened, $keySeparator, '', $escapeFormulas);
             $value = $flattened;
         }
@@ -106,7 +106,7 @@ public function supportsEncoding($format)
     /**
      * {@inheritdoc}
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         $handle = fopen('php://temp', 'r+');
         fwrite($handle, $data);
@@ -114,8 +114,8 @@ public function decode($data, $format, array $context = array())
 
         $headers = null;
         $nbHeaders = 0;
-        $headerCount = array();
-        $result = array();
+        $headerCount = [];
+        $result = [];
 
         list($delimiter, $enclosure, $escapeChar, $keySeparator) = $this->getCsvOptions($context);
 
@@ -134,7 +134,7 @@ public function decode($data, $format, array $context = array())
                 continue;
             }
 
-            $item = array();
+            $item = [];
             for ($i = 0; ($i < $nbCols) && ($i < $nbHeaders); ++$i) {
                 $depth = $headerCount[$i];
                 $arr = &$item;
@@ -147,7 +147,7 @@ public function decode($data, $format, array $context = array())
                     }
 
                     if (!isset($arr[$headers[$i][$j]])) {
-                        $arr[$headers[$i][$j]] = array();
+                        $arr[$headers[$i][$j]] = [];
                     }
 
                     $arr = &$arr[$headers[$i][$j]];
@@ -202,14 +202,14 @@ private function getCsvOptions(array $context)
         $enclosure = isset($context[self::ENCLOSURE_KEY]) ? $context[self::ENCLOSURE_KEY] : $this->enclosure;
         $escapeChar = isset($context[self::ESCAPE_CHAR_KEY]) ? $context[self::ESCAPE_CHAR_KEY] : $this->escapeChar;
         $keySeparator = isset($context[self::KEY_SEPARATOR_KEY]) ? $context[self::KEY_SEPARATOR_KEY] : $this->keySeparator;
-        $headers = isset($context[self::HEADERS_KEY]) ? $context[self::HEADERS_KEY] : array();
+        $headers = isset($context[self::HEADERS_KEY]) ? $context[self::HEADERS_KEY] : [];
         $escapeFormulas = isset($context[self::ESCAPE_FORMULAS_KEY]) ? $context[self::ESCAPE_FORMULAS_KEY] : $this->escapeFormulas;
 
         if (!\is_array($headers)) {
             throw new InvalidArgumentException(sprintf('The "%s" context variable must be an array or null, given "%s".', self::HEADERS_KEY, \gettype($headers)));
         }
 
-        return array($delimiter, $enclosure, $escapeChar, $keySeparator, $headers, $escapeFormulas);
+        return [$delimiter, $enclosure, $escapeChar, $keySeparator, $headers, $escapeFormulas];
     }
 
     /**
@@ -217,8 +217,8 @@ private function getCsvOptions(array $context)
      */
     private function extractHeaders(array $data)
     {
-        $headers = array();
-        $flippedHeaders = array();
+        $headers = [];
+        $flippedHeaders = [];
 
         foreach ($data as $row) {
             $previousHeader = null;
diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index a0894cec4148..dee18f8e5814 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -45,7 +45,7 @@ class XmlEncoder implements EncoderInterface, DecoderInterface, NormalizationAwa
      * @param int|null $loadOptions      A bit field of LIBXML_* constants
      * @param int[]    $ignoredNodeTypes an array of ignored XML node types, each one of the DOM Predefined XML_* Constants
      */
-    public function __construct(string $rootNodeName = 'response', int $loadOptions = null, array $ignoredNodeTypes = array(XML_PI_NODE, XML_COMMENT_NODE))
+    public function __construct(string $rootNodeName = 'response', int $loadOptions = null, array $ignoredNodeTypes = [XML_PI_NODE, XML_COMMENT_NODE])
     {
         $this->rootNodeName = $rootNodeName;
         $this->loadOptions = null !== $loadOptions ? $loadOptions : LIBXML_NONET | LIBXML_NOBLANKS;
@@ -55,7 +55,7 @@ public function __construct(string $rootNodeName = 'response', int $loadOptions
     /**
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         if ($data instanceof \DOMDocument) {
             return $data->saveXML();
@@ -81,7 +81,7 @@ public function encode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         if ('' === trim($data)) {
             throw new NotEncodableValueException('Invalid XML data, it can not be empty.');
@@ -117,7 +117,7 @@ public function decode($data, $format, array $context = array())
 
         if ($rootNode->hasChildNodes()) {
             $xpath = new \DOMXPath($dom);
-            $data = array();
+            $data = [];
             foreach ($xpath->query('namespace::*', $dom->documentElement) as $nsNode) {
                 $data['@'.$nsNode->nodeName] = $nsNode->nodeValue;
             }
@@ -135,7 +135,7 @@ public function decode($data, $format, array $context = array())
             return $rootNode->nodeValue;
         }
 
-        $data = array();
+        $data = [];
 
         foreach ($rootNode->attributes as $attrKey => $attr) {
             $data['@'.$attrKey] = $attr->nodeValue;
@@ -241,7 +241,7 @@ final protected function isElementNameValid(string $name): bool
      *
      * @return array|string
      */
-    private function parseXml(\DOMNode $node, array $context = array())
+    private function parseXml(\DOMNode $node, array $context = [])
     {
         $data = $this->parseXmlAttributes($node, $context);
 
@@ -273,13 +273,13 @@ private function parseXml(\DOMNode $node, array $context = array())
     /**
      * Parse the input DOMNode attributes into an array.
      */
-    private function parseXmlAttributes(\DOMNode $node, array $context = array()): array
+    private function parseXmlAttributes(\DOMNode $node, array $context = []): array
     {
         if (!$node->hasAttributes()) {
-            return array();
+            return [];
         }
 
-        $data = array();
+        $data = [];
         $typeCastAttributes = $this->resolveXmlTypeCastAttributes($context);
 
         foreach ($node->attributes as $attr) {
@@ -306,17 +306,17 @@ private function parseXmlAttributes(\DOMNode $node, array $context = array()): a
      *
      * @return array|string
      */
-    private function parseXmlValue(\DOMNode $node, array $context = array())
+    private function parseXmlValue(\DOMNode $node, array $context = [])
     {
         if (!$node->hasChildNodes()) {
             return $node->nodeValue;
         }
 
-        if (1 === $node->childNodes->length && \in_array($node->firstChild->nodeType, array(XML_TEXT_NODE, XML_CDATA_SECTION_NODE))) {
+        if (1 === $node->childNodes->length && \in_array($node->firstChild->nodeType, [XML_TEXT_NODE, XML_CDATA_SECTION_NODE])) {
             return $node->firstChild->nodeValue;
         }
 
-        $value = array();
+        $value = [];
 
         foreach ($node->childNodes as $subnode) {
             if (\in_array($subnode->nodeType, $this->ignoredNodeTypes, true)) {
@@ -471,7 +471,7 @@ private function selectNodeType(\DOMNode $node, $val): bool
     /**
      * Get real XML root node name, taking serializer options into account.
      */
-    private function resolveXmlRootName(array $context = array()): string
+    private function resolveXmlRootName(array $context = []): string
     {
         return isset($context['xml_root_node_name'])
             ? $context['xml_root_node_name']
@@ -481,7 +481,7 @@ private function resolveXmlRootName(array $context = array()): string
     /**
      * Get XML option for type casting attributes Defaults to true.
      */
-    private function resolveXmlTypeCastAttributes(array $context = array()): bool
+    private function resolveXmlTypeCastAttributes(array $context = []): bool
     {
         return isset($context['xml_type_cast_attributes'])
             ? (bool) $context['xml_type_cast_attributes']
@@ -496,7 +496,7 @@ private function createDomDocument(array $context): \DOMDocument
         $document = new \DOMDocument();
 
         // Set an attribute on the DOM document specifying, as part of the XML declaration,
-        $xmlOptions = array(
+        $xmlOptions = [
             // nicely formats output with indentation and extra space
             'xml_format_output' => 'formatOutput',
             // the version number of the document
@@ -505,7 +505,7 @@ private function createDomDocument(array $context): \DOMDocument
             'xml_encoding' => 'encoding',
             // whether the document is standalone
             'xml_standalone' => 'xmlStandalone',
-        );
+        ];
         foreach ($xmlOptions as $xmlOption => $documentProperty) {
             if (isset($context[$xmlOption])) {
                 $document->$documentProperty = $context[$xmlOption];
diff --git a/src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorFromClassMetadata.php b/src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorFromClassMetadata.php
index 6ed1bb8ebe1d..1178f03cfb9c 100644
--- a/src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorFromClassMetadata.php
+++ b/src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorFromClassMetadata.php
@@ -22,7 +22,7 @@ class ClassDiscriminatorFromClassMetadata implements ClassDiscriminatorResolverI
      * @var ClassMetadataFactoryInterface
      */
     private $classMetadataFactory;
-    private $mappingForMappedObjectCache = array();
+    private $mappingForMappedObjectCache = [];
 
     public function __construct(ClassMetadataFactoryInterface $classMetadataFactory)
     {
diff --git a/src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorMapping.php b/src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorMapping.php
index 65282e6aa07b..cadac6e3a03f 100644
--- a/src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorMapping.php
+++ b/src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorMapping.php
@@ -19,7 +19,7 @@ class ClassDiscriminatorMapping
     private $typeProperty;
     private $typesMapping;
 
-    public function __construct(string $typeProperty, array $typesMapping = array())
+    public function __construct(string $typeProperty, array $typesMapping = [])
     {
         $this->typeProperty = $typeProperty;
         $this->typesMapping = $typesMapping;
diff --git a/src/Symfony/Component/Serializer/Mapping/ClassMetadata.php b/src/Symfony/Component/Serializer/Mapping/ClassMetadata.php
index e1d474504c25..6d1d8cf7ab9a 100644
--- a/src/Symfony/Component/Serializer/Mapping/ClassMetadata.php
+++ b/src/Symfony/Component/Serializer/Mapping/ClassMetadata.php
@@ -32,7 +32,7 @@ class ClassMetadata implements ClassMetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getAttributesMetadata()} instead.
      */
-    public $attributesMetadata = array();
+    public $attributesMetadata = [];
 
     /**
      * @var \ReflectionClass
@@ -133,10 +133,10 @@ public function setClassDiscriminatorMapping(ClassDiscriminatorMapping $mapping
      */
     public function __sleep()
     {
-        return array(
+        return [
             'name',
             'attributesMetadata',
             'classDiscriminatorMapping',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php b/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
index 73d942e42874..692536e5483b 100644
--- a/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/Serializer/Mapping/Loader/XmlFileLoader.php
@@ -69,7 +69,7 @@ public function loadClassMetadata(ClassMetadataInterface $classMetadata)
             }
 
             if (isset($xml->{'discriminator-map'})) {
-                $mapping = array();
+                $mapping = [];
                 foreach ($xml->{'discriminator-map'}->mapping as $element) {
                     $elementAttributes = $element->attributes();
                     $mapping[(string) $elementAttributes->type] = (string) $elementAttributes->class;
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
index 84e890aae83a..d3d4f3d87d10 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -362,7 +362,7 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
                     // Don't run set for a parameter passed to the constructor
                     $params[] = $this->denormalizeParameter($reflectionClass, $constructorParameter, $paramName, $parameterData, $context, $format);
                     unset($data[$key]);
-                } elseif (array_key_exists($key, $context[static::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class] ?? array())) {
+                } elseif (array_key_exists($key, $context[static::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class] ?? [])) {
                     $params[] = $context[static::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class][$key];
                 } elseif ($constructorParameter->isDefaultValueAvailable()) {
                     $params[] = $constructorParameter->getDefaultValue();
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index 37f9fe68714d..26c1f3fb9912 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -37,7 +37,7 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
     const DISABLE_TYPE_ENFORCEMENT = 'disable_type_enforcement';
 
     private $propertyTypeExtractor;
-    private $attributesCache = array();
+    private $attributesCache = [];
 
     /**
      * @var callable|null
@@ -72,7 +72,7 @@ public function supportsNormalization($data, $format = null)
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
@@ -82,8 +82,8 @@ public function normalize($object, $format = null, array $context = array())
             return $this->handleCircularReference($object);
         }
 
-        $data = array();
-        $stack = array();
+        $data = [];
+        $stack = [];
         $attributes = $this->getAttributes($object, $format, $context);
         $class = \get_class($object);
         $attributesMetadata = $this->classMetadataFactory ? $this->classMetadataFactory->getMetadataFor($class)->getAttributesMetadata() : null;
@@ -197,7 +197,7 @@ protected function getAttributes($object, $format = null, array $context)
      *
      * @return string[]
      */
-    abstract protected function extractAttributes($object, $format = null, array $context = array());
+    abstract protected function extractAttributes($object, $format = null, array $context = []);
 
     /**
      * Gets the attribute value.
@@ -209,7 +209,7 @@ abstract protected function extractAttributes($object, $format = null, array $co
      *
      * @return mixed
      */
-    abstract protected function getAttributeValue($object, $attribute, $format = null, array $context = array());
+    abstract protected function getAttributeValue($object, $attribute, $format = null, array $context = []);
 
     /**
      * Sets a handler function that will be called when the max depth is reached.
@@ -230,7 +230,7 @@ public function supportsDenormalization($data, $type, $format = null)
     /**
      * {@inheritdoc}
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
@@ -238,7 +238,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
 
         $allowedAttributes = $this->getAllowedAttributes($class, $context, true);
         $normalizedData = $this->prepareForDenormalization($data);
-        $extraAttributes = array();
+        $extraAttributes = [];
 
         $reflectionClass = new \ReflectionClass($class);
         $object = $this->instantiateObject($normalizedData, $class, $context, $reflectionClass, $allowedAttributes, $format);
@@ -280,7 +280,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
      * @param string|null $format
      * @param array       $context
      */
-    abstract protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array());
+    abstract protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = []);
 
     /**
      * Validates the submitted data and denormalizes it.
@@ -298,7 +298,7 @@ private function validateAndDenormalize(string $currentClass, string $attribute,
             return $data;
         }
 
-        $expectedTypes = array();
+        $expectedTypes = [];
         foreach ($types as $type) {
             if (null === $data && $type->isNullable()) {
                 return;
@@ -311,7 +311,7 @@ private function validateAndDenormalize(string $currentClass, string $attribute,
                 // Fix a collection that contains the only one element
                 // This is special to xml format only
                 if ('xml' === $format && !\is_int(key($data))) {
-                    $data = array($data);
+                    $data = [$data];
                 }
 
                 if (null !== $collectionKeyType = $type->getCollectionKeyType()) {
@@ -384,9 +384,9 @@ private function getTypes(string $currentClass, string $attribute)
 
         if (null !== $this->classDiscriminatorResolver && null !== $discriminatorMapping = $this->classDiscriminatorResolver->getMappingForClass($currentClass)) {
             if ($discriminatorMapping->getTypeProperty() === $attribute) {
-                return array(
+                return [
                     new Type(Type::BUILTIN_TYPE_STRING),
-                );
+                ];
             }
 
             foreach ($discriminatorMapping->getTypesMapping() as $mappedClass) {
diff --git a/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
index 70a8470891e3..c77e565b95d5 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php
@@ -36,7 +36,7 @@ class ArrayDenormalizer implements ContextAwareDenormalizerInterface, Serializer
      *
      * @throws NotNormalizableValueException
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         if (null === $this->serializer) {
             throw new BadMethodCallException('Please set a serializer before calling denormalize()!');
@@ -66,7 +66,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
     /**
      * {@inheritdoc}
      */
-    public function supportsDenormalization($data, $type, $format = null, array $context = array())
+    public function supportsDenormalization($data, $type, $format = null, array $context = [])
     {
         return '[]' === substr($type, -2)
             && $this->serializer->supportsDenormalization($data, substr($type, 0, -2), $format, $context);
diff --git a/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
index bc9aa60bd3a0..fc8556276f96 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
@@ -27,17 +27,17 @@ class ConstraintViolationListNormalizer implements NormalizerInterface, Cacheabl
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
-        $violations = array();
-        $messages = array();
+        $violations = [];
+        $messages = [];
         foreach ($object as $violation) {
             $propertyPath = $violation->getPropertyPath();
 
-            $violationEntry = array(
+            $violationEntry = [
                 'propertyPath' => $propertyPath,
                 'title' => $violation->getMessage(),
-            );
+            ];
             if (null !== $code = $violation->getCode()) {
                 $violationEntry['type'] = sprintf('urn:uuid:%s', $code);
             }
@@ -48,10 +48,10 @@ public function normalize($object, $format = null, array $context = array())
             $messages[] = $prefix.$violation->getMessage();
         }
 
-        $result = array(
+        $result = [
             'type' => $context['type'] ?? 'https://symfony.com/errors/validation',
             'title' => $context['title'] ?? 'Validation Failed',
-        );
+        ];
         if (isset($context['status'])) {
             $result['status'] = $context['status'];
         }
@@ -62,7 +62,7 @@ public function normalize($object, $format = null, array $context = array())
             $result['instance'] = $context['instance'];
         }
 
-        return $result + array('violations' => $violations);
+        return $result + ['violations' => $violations];
     }
 
     /**
diff --git a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
index 695318a5bcf5..d5a1990f0b80 100644
--- a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
@@ -25,7 +25,7 @@ class CustomNormalizer implements NormalizerInterface, DenormalizerInterface, Se
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         return $object->normalize($this->serializer, $format, $context);
     }
@@ -33,7 +33,7 @@ public function normalize($object, $format = null, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         $object = $this->extractObjectToPopulate($class, $context) ?: new $class();
         $object->denormalize($this->serializer, $data, $format, $context);
diff --git a/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
index 0bf719771a97..07c5671752a9 100644
--- a/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
@@ -34,7 +34,7 @@
  */
 class GetSetMethodNormalizer extends AbstractObjectNormalizer
 {
-    private static $setterAccessibleCache = array();
+    private static $setterAccessibleCache = [];
 
     /**
      * {@inheritdoc}
@@ -97,12 +97,12 @@ private function isGetMethod(\ReflectionMethod $method): bool
     /**
      * {@inheritdoc}
      */
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
         $reflectionObject = new \ReflectionObject($object);
         $reflectionMethods = $reflectionObject->getMethods(\ReflectionMethod::IS_PUBLIC);
 
-        $attributes = array();
+        $attributes = [];
         foreach ($reflectionMethods as $method) {
             if (!$this->isGetMethod($method)) {
                 continue;
@@ -121,22 +121,22 @@ protected function extractAttributes($object, $format = null, array $context = a
     /**
      * {@inheritdoc}
      */
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
         $ucfirsted = ucfirst($attribute);
 
         $getter = 'get'.$ucfirsted;
-        if (\is_callable(array($object, $getter))) {
+        if (\is_callable([$object, $getter])) {
             return $object->$getter();
         }
 
         $isser = 'is'.$ucfirsted;
-        if (\is_callable(array($object, $isser))) {
+        if (\is_callable([$object, $isser])) {
             return $object->$isser();
         }
 
         $haser = 'has'.$ucfirsted;
-        if (\is_callable(array($object, $haser))) {
+        if (\is_callable([$object, $haser])) {
             return $object->$haser();
         }
     }
@@ -144,13 +144,13 @@ protected function getAttributeValue($object, $attribute, $format = null, array
     /**
      * {@inheritdoc}
      */
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         $setter = 'set'.ucfirst($attribute);
         $key = \get_class($object).':'.$setter;
 
         if (!isset(self::$setterAccessibleCache[$key])) {
-            self::$setterAccessibleCache[$key] = \is_callable(array($object, $setter)) && !(new \ReflectionMethod($object, $setter))->isStatic();
+            sel
10000
f::$setterAccessibleCache[$key] = \is_callable([$object, $setter]) && !(new \ReflectionMethod($object, $setter))->isStatic();
         }
 
         if (self::$setterAccessibleCache[$key]) {
diff --git a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
index bc7363cf0eae..a533b483683b 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
@@ -30,7 +30,7 @@ class ObjectNormalizer extends AbstractObjectNormalizer
 {
     protected $propertyAccessor;
 
-    private $discriminatorCache = array();
+    private $discriminatorCache = [];
 
     public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyAccessorInterface $propertyAccessor = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null)
     {
@@ -54,10 +54,10 @@ public function hasCacheableSupportsMethod(): bool
     /**
      * {@inheritdoc}
      */
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
         // If not using groups, detect manually
-        $attributes = array();
+        $attributes = [];
 
         // methods
         $reflClass = new \ReflectionClass($object);
@@ -110,7 +110,7 @@ protected function extractAttributes($object, $format = null, array $context = a
     /**
      * {@inheritdoc}
      */
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
         $cacheKey = \get_class($object);
         if (!array_key_exists($cacheKey, $this->discriminatorCache)) {
@@ -127,7 +127,7 @@ protected function getAttributeValue($object, $attribute, $format = null, array
     /**
      * {@inheritdoc}
      */
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         try {
             $this->propertyAccessor->setValue($object, $attribute, $value);
diff --git a/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
index a2207c636ffd..ee85552c65ed 100644
--- a/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
@@ -76,7 +76,7 @@ private function supports(string $class): bool
     /**
      * {@inheritdoc}
      */
-    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = array())
+    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = [])
     {
         if (!parent::isAllowedAttribute($classOrObject, $attribute, $format, $context)) {
             return false;
@@ -97,10 +97,10 @@ protected function isAllowedAttribute($classOrObject, $attribute, $format = null
     /**
      * {@inheritdoc}
      */
-    protected function extractAttributes($object, $format = null, array $context = array())
+    protected function extractAttributes($object, $format = null, array $context = [])
     {
         $reflectionObject = new \ReflectionObject($object);
-        $attributes = array();
+        $attributes = [];
 
         do {
             foreach ($reflectionObject->getProperties() as $property) {
@@ -118,7 +118,7 @@ protected function extractAttributes($object, $format = null, array $context = a
     /**
      * {@inheritdoc}
      */
-    protected function getAttributeValue($object, $attribute, $format = null, array $context = array())
+    protected function getAttributeValue($object, $attribute, $format = null, array $context = [])
     {
         try {
             $reflectionProperty = $this->getReflectionProperty($object, $attribute);
@@ -137,7 +137,7 @@ protected function getAttributeValue($object, $attribute, $format = null, array
     /**
      * {@inheritdoc}
      */
-    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array())
+    protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = [])
     {
         try {
             $reflectionProperty = $this->getReflectionProperty($object, $attribute);
diff --git a/src/Symfony/Component/Serializer/Serializer.php b/src/Symfony/Component/Serializer/Serializer.php
index 27167fc6d686..613a7eadfd5d 100644
--- a/src/Symfony/Component/Serializer/Serializer.php
+++ b/src/Symfony/Component/Serializer/Serializer.php
@@ -58,13 +58,13 @@ class Serializer implements SerializerInterface, ContextAwareNormalizerInterface
     /**
      * @internal since Symfony 4.1
      */
-    protected $normalizers = array();
+    protected $normalizers = [];
 
     private $cachedNormalizers;
-    private $denormalizerCache = array();
-    private $normalizerCache = array();
+    private $denormalizerCache = [];
+    private $normalizerCache = [];
 
-    public function __construct(array $normalizers = array(), array $encoders = array())
+    public function __construct(array $normalizers = [], array $encoders = [])
     {
         foreach ($normalizers as $normalizer) {
             if ($normalizer instanceof SerializerAwareInterface) {
@@ -81,8 +81,8 @@ public function __construct(array $normalizers = array(), array $encoders = arra
         }
         $this->normalizers = $normalizers;
 
-        $decoders = array();
-        $realEncoders = array();
+        $decoders = [];
+        $realEncoders = [];
         foreach ($encoders as $encoder) {
             if ($encoder instanceof SerializerAwareInterface) {
                 $encoder->setSerializer($this);
@@ -101,7 +101,7 @@ public function __construct(array $normalizers = array(), array $encoders = arra
     /**
      * {@inheritdoc}
      */
-    final public function serialize($data, $format, array $context = array())
+    final public function serialize($data, $format, array $context = [])
     {
         if (!$this->supportsEncoding($format, $context)) {
             throw new NotEncodableValueException(sprintf('Serialization for the format %s is not supported', $format));
@@ -117,7 +117,7 @@ final public function serialize($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    final public function deserialize($data, $type, $format, array $context = array())
+    final public function deserialize($data, $type, $format, array $context = [])
     {
         if (!$this->supportsDecoding($format, $context)) {
             throw new NotEncodableValueException(sprintf('Deserialization for the format %s is not supported', $format));
@@ -131,7 +131,7 @@ final public function deserialize($data, $type, $format, array $context = array(
     /**
      * {@inheritdoc}
      */
-    public function normalize($data, $format = null, array $context = array())
+    public function normalize($data, $format = null, array $context = [])
     {
         // If a normalizer supports the given data, use it
         if ($normalizer = $this->getNormalizer($data, $format, $context)) {
@@ -143,7 +143,7 @@ public function normalize($data, $format = null, array $context = array())
         }
 
         if (\is_array($data) || $data instanceof \Traversable) {
-            $normalized = array();
+            $normalized = [];
             foreach ($data as $key => $val) {
                 $normalized[$key] = $this->normalize($val, $format, $context);
             }
@@ -167,7 +167,7 @@ public function normalize($data, $format = null, array $context = array())
      *
      * @throws NotNormalizableValueException
      */
-    public function denormalize($data, $type, $format = null, array $context = array())
+    public function denormalize($data, $type, $format = null, array $context = [])
     {
         if (!$this->normalizers) {
             throw new LogicException('You must register at least one normalizer to be able to denormalize objects.');
@@ -183,7 +183,7 @@ public function denormalize($data, $type, $format = null, array $context = array
     /**
      * {@inheritdoc}
      */
-    public function supportsNormalization($data, $format = null, array $context = array())
+    public function supportsNormalization($data, $format = null, array $context = [])
     {
         return null !== $this->getNormalizer($data, $format, $context);
     }
@@ -191,7 +191,7 @@ public function supportsNormalization($data, $format = null, array $context = ar
     /**
      * {@inheritdoc}
      */
-    public function supportsDenormalization($data, $type, $format = null, array $context = array())
+    public function supportsDenormalization($data, $type, $format = null, array $context = [])
     {
         return null !== $this->getDenormalizer($data, $type, $format, $context);
     }
@@ -209,12 +209,12 @@ private function getNormalizer($data, ?string $format, array $context)
     {
         if ($this->cachedNormalizers !== $this->normalizers) {
             $this->cachedNormalizers = $this->normalizers;
-            $this->denormalizerCache = $this->normalizerCache = array();
+            $this->denormalizerCache = $this->normalizerCache = [];
         }
         $type = \is_object($data) ? \get_class($data) : 'native-'.\gettype($data);
 
         if (!isset($this->normalizerCache[$format][$type])) {
-            $this->normalizerCache[$format][$type] = array();
+            $this->normalizerCache[$format][$type] = [];
 
             foreach ($this->normalizers as $k => $normalizer) {
                 if (!$normalizer instanceof NormalizerInterface) {
@@ -252,10 +252,10 @@ private function getDenormalizer($data, string $class, ?string $format, array $c
     {
         if ($this->cachedNormalizers !== $this->normalizers) {
             $this->cachedNormalizers = $this->normalizers;
-            $this->denormalizerCache = $this->normalizerCache = array();
+            $this->denormalizerCache = $this->normalizerCache = [];
         }
         if (!isset($this->denormalizerCache[$format][$class])) {
-            $this->denormalizerCache[$format][$class] = array();
+            $this->denormalizerCache[$format][$class] = [];
 
             foreach ($this->normalizers as $k => $normalizer) {
                 if (!$normalizer instanceof DenormalizerInterface) {
@@ -282,7 +282,7 @@ private function getDenormalizer($data, string $class, ?string $format, array $c
     /**
      * {@inheritdoc}
      */
-    final public function encode($data, $format, array $context = array())
+    final public function encode($data, $format, array $context = [])
     {
         return $this->encoder->encode($data, $format, $context);
     }
@@ -290,7 +290,7 @@ final public function encode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    final public function decode($data, $format, array $context = array())
+    final public function decode($data, $format, array $context = [])
     {
         return $this->decoder->decode($data, $format, $context);
     }
@@ -298,7 +298,7 @@ final public function decode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function supportsEncoding($format, array $context = array())
+    public function supportsEncoding($format, array $context = [])
     {
         return $this->encoder->supportsEncoding($format, $context);
     }
@@ -306,7 +306,7 @@ public function supportsEncoding($format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function supportsDecoding($format, array $context = array())
+    public function supportsDecoding($format, array $context = [])
     {
         return $this->decoder->supportsDecoding($format, $context);
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Annotation/DiscriminatorMapTest.php b/src/Symfony/Component/Serializer/Tests/Annotation/DiscriminatorMapTest.php
index df2f111fa34c..3f3f166636ea 100644
--- a/src/Symfony/Component/Serializer/Tests/Annotation/DiscriminatorMapTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Annotation/DiscriminatorMapTest.php
@@ -21,16 +21,16 @@ class DiscriminatorMapTest extends TestCase
 {
     public function testGetTypePropertyAndMapping()
     {
-        $annotation = new DiscriminatorMap(array('typeProperty' => 'type', 'mapping' => array(
+        $annotation = new DiscriminatorMap(['typeProperty' => 'type', 'mapping' => [
             'foo' => 'FooClass',
             'bar' => 'BarClass',
-        )));
+        ]]);
 
         $this->assertEquals('type', $annotation->getTypeProperty());
-        $this->assertEquals(array(
+        $this->assertEquals([
             'foo' => 'FooClass',
             'bar' => 'BarClass',
-        ), $annotation->getMapping());
+        ], $annotation->getMapping());
     }
 
     /**
@@ -38,7 +38,7 @@ public function testGetTypePropertyAndMapping()
      */
     public function testExceptionWithoutTypeProperty()
     {
-        new DiscriminatorMap(array('mapping' => array('foo' => 'FooClass')));
+        new DiscriminatorMap(['mapping' => ['foo' => 'FooClass']]);
     }
 
     /**
@@ -46,7 +46,7 @@ public function testExceptionWithoutTypeProperty()
      */
     public function testExceptionWithEmptyTypeProperty()
     {
-        new DiscriminatorMap(array('typeProperty' => '', 'mapping' => array('foo' => 'FooClass')));
+        new DiscriminatorMap(['typeProperty' => '', 'mapping' => ['foo' => 'FooClass']]);
     }
 
     /**
@@ -54,7 +54,7 @@ public function testExceptionWithEmptyTypeProperty()
      */
     public function testExceptionWithoutMappingProperty()
     {
-        new DiscriminatorMap(array('typeProperty' => 'type'));
+        new DiscriminatorMap(['typeProperty' => 'type']);
     }
 
     /**
@@ -62,6 +62,6 @@ public function testExceptionWithoutMappingProperty()
      */
     public function testExceptionWitEmptyMappingProperty()
     {
-        new DiscriminatorMap(array('typeProperty' => 'type', 'mapping' => array()));
+        new DiscriminatorMap(['typeProperty' => 'type', 'mapping' => []]);
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
index 79ca636f2bd6..d6cb5ef6a7cb 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
@@ -182,28 +182,28 @@ public function testEncodeFormulas()
 "	=2+3"
 
 CSV
-            , $this->encoder->encode(array('=2+3'), 'csv'));
+            , $this->encoder->encode(['=2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 "	-2+3"
 
 CSV
-            , $this->encoder->encode(array('-2+3'), 'csv'));
+            , $this->encoder->encode(['-2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 "	+2+3"
 
 CSV
-            , $this->encoder->encode(array('+2+3'), 'csv'));
+            , $this->encoder->encode(['+2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 "	@MyDataColumn"
 
 CSV
-            , $this->encoder->encode(array('@MyDataColumn'), 'csv'));
+            , $this->encoder->encode(['@MyDataColumn'], 'csv'));
     }
 
     public function testDoNotEncodeFormulas()
@@ -213,28 +213,28 @@ public function testDoNotEncodeFormulas()
 =2+3
 
 CSV
-            , $this->encoder->encode(array('=2+3'), 'csv'));
+            , $this->encoder->encode(['=2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 -2+3
 
 CSV
-            , $this->encoder->encode(array('-2+3'), 'csv'));
+            , $this->encoder->encode(['-2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 +2+3
 
 CSV
-            , $this->encoder->encode(array('+2+3'), 'csv'));
+            , $this->encoder->encode(['+2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 @MyDataColumn
 
 CSV
-            , $this->encoder->encode(array('@MyDataColumn'), 'csv'));
+            , $this->encoder->encode(['@MyDataColumn'], 'csv'));
     }
 
     public function testEncodeFormulasWithSettingsPassedInContext()
@@ -244,36 +244,36 @@ public function testEncodeFormulasWithSettingsPassedInContext()
 "	=2+3"
 
 CSV
-            , $this->encoder->encode(array('=2+3'), 'csv', array(
+            , $this->encoder->encode(['=2+3'], 'csv', [
                 CsvEncoder::ESCAPE_FORMULAS_KEY => true,
-            )));
+            ]));
 
         $this->assertSame(<<<'CSV'
 0
 "	-2+3"
 
 CSV
-            , $this->encoder->encode(array('-2+3'), 'csv', array(
+            , $this->encoder->encode(['-2+3'], 'csv', [
                 CsvEncoder::ESCAPE_FORMULAS_KEY => true,
-            )));
+            ]));
 
         $this->assertSame(<<<'CSV'
 0
 "	+2+3"
 
 CSV
-            , $this->encoder->encode(array('+2+3'), 'csv', array(
+            , $this->encoder->encode(['+2+3'], 'csv', [
                 CsvEncoder::ESCAPE_FORMULAS_KEY => true,
-            )));
+            ]));
 
         $this->assertSame(<<<'CSV'
 0
 "	@MyDataColumn"
 
 CSV
-            , $this->encoder->encode(array('@MyDataColumn'), 'csv', array(
+            , $this->encoder->encode(['@MyDataColumn'], 'csv', [
                 CsvEncoder::ESCAPE_FORMULAS_KEY => true,
-            )));
+            ]));
     }
 
     public function testSupportsDecoding()
@@ -315,16 +315,16 @@ public function testDecodeOnlyOneAsCollection()
     {
         $this->encoder = new CsvEncoder(',', '"', '\\', '.');
 
-        $expected = array(
-            array('foo' => 'a'),
-        );
+        $expected = [
+            ['foo' => 'a'],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo
 a
 
 CSV
-            , 'csv', array(CsvEncoder::AS_COLLECTION_KEY => true)));
+            , 'csv', [CsvEncoder::AS_COLLECTION_KEY => true]));
     }
 
     public function testDecodeToManyRelation()
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
index b6e5143d3b94..1cd1f69565ca 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
@@ -534,10 +534,10 @@ public function testDecodeIgnoreComments()
 </people>
 XML;
 
-        $expected = array('person' => array(
-          array('firstname' => 'Benjamin', 'lastname' => 'Alexandre'),
-          array('firstname' => 'Damien', 'lastname' => 'Clay'),
-        ));
+        $expected = ['person' => [
+          ['firstname' => 'Benjamin', 'lastname' => 'Alexandre'],
+          ['firstname' => 'Damien', 'lastname' => 'Clay'],
+        ]];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -559,14 +559,14 @@ public function testDecodePreserveComments()
 </people>
 XML;
 
-        $this->encoder = new XmlEncoder('people', null, array(XML_PI_NODE));
-        $serializer = new Serializer(array(new CustomNormalizer()), array('xml' => new XmlEncoder()));
+        $this->encoder = new XmlEncoder('people', null, [XML_PI_NODE]);
+        $serializer = new Serializer([new CustomNormalizer()], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
 
-        $expected = array('person' => array(
-          array('firstname' => 'Benjamin', 'lastname' => 'Alexandre', '#comment' => ' This comment should be decoded. '),
-          array('firstname' => 'Damien', 'lastname' => 'Clay'),
-        ));
+        $expected = ['person' => [
+          ['firstname' => 'Benjamin', 'lastname' => 'Alexandre', '#comment' => ' This comment should be decoded. '],
+          ['firstname' => 'Damien', 'lastname' => 'Clay'],
+        ]];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -574,7 +574,7 @@ public function testDecodePreserveComments()
     public function testDecodeAlwaysAsCollection()
     {
         $this->encoder = new XmlEncoder('response', null);
-        $serializer = new Serializer(array(new CustomNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([new CustomNormalizer()], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
 
         $source = <<<'XML'
@@ -586,16 +586,16 @@ public function testDecodeAlwaysAsCollection()
     </order_row>
 </order_rows>
 XML;
-        $expected = array(
+        $expected = [
             '@nodeType' => 'order_row',
             '@virtualEntity' => 'true',
-            'order_row' => array(array(
-                'id' => array(16),
-                'test' => array(16),
-            )),
-        );
+            'order_row' => [[
+                'id' => [16],
+                'test' => [16],
+            ]],
+        ];
 
-        $this->assertEquals($expected, $this->encoder->decode($source, 'xml', array('as_collection' => true)));
+        $this->assertEquals($expected, $this->encoder->decode($source, 'xml', ['as_collection' => true]));
     }
 
     public function testDecodeWithoutItemHash()
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/ClassDiscriminatorMappingTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/ClassDiscriminatorMappingTest.php
index 68a092d7019f..fea1dc6e8f35 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/ClassDiscriminatorMappingTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/ClassDiscriminatorMappingTest.php
@@ -23,9 +23,9 @@ class ClassDiscriminatorMappingTest extends TestCase
 {
     public function testGetClass()
     {
-        $mapping = new ClassDiscriminatorMapping('type', array(
+        $mapping = new ClassDiscriminatorMapping('type', [
             'first' => AbstractDummyFirstChild::class,
-        ));
+        ]);
 
         $this->assertEquals(AbstractDummyFirstChild::class, $mapping->getClassForType('first'));
         $this->assertNull($mapping->getClassForType('second'));
@@ -33,9 +33,9 @@ public function testGetClass()
 
     public function testMappedObjectType()
     {
-        $mapping = new ClassDiscriminatorMapping('type', array(
+        $mapping = new ClassDiscriminatorMapping('type', [
             'first' => AbstractDummyFirstChild::class,
-        ));
+        ]);
 
         $this->assertEquals('first', $mapping->getMappedObjectType(new AbstractDummyFirstChild()));
         $this->assertNull($mapping->getMappedObjectType(new AbstractDummySecondChild()));
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTest.php
index b6566d333166..62953ac7ae86 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTest.php
@@ -62,10 +62,10 @@ public function testLoadDiscriminatorMap()
         $classMetadata = new ClassMetadata(AbstractDummy::class);
         $this->loader->loadClassMetadata($classMetadata);
 
-        $expected = new ClassMetadata(AbstractDummy::class, new ClassDiscriminatorMapping('type', array(
+        $expected = new ClassMetadata(AbstractDummy::class, new ClassDiscriminatorMapping('type', [
             'first' => AbstractDummyFirstChild::class,
             'second' => AbstractDummySecondChild::class,
-        )));
+        ]));
 
         $expected->addAttributeMetadata(new AttributeMetadata('foo'));
         $expected->getReflectionClass();
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/XmlFileLoaderTest.php
index c369f8938d58..ff6d2752fa92 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/XmlFileLoaderTest.php
@@ -73,10 +73,10 @@ public function testLoadDiscriminatorMap()
         $classMetadata = new ClassMetadata(AbstractDummy::class);
         $this->loader->loadClassMetadata($classMetadata);
 
-        $expected = new ClassMetadata(AbstractDummy::class, new ClassDiscriminatorMapping('type', array(
+        $expected = new ClassMetadata(AbstractDummy::class, new ClassDiscriminatorMapping('type', [
             'first' => AbstractDummyFirstChild::class,
             'second' => AbstractDummySecondChild::class,
-        )));
+        ]));
 
         $expected->addAttributeMetadata(new AttributeMetadata('foo'));
 
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/YamlFileLoaderTest.php
index 6e18edbe2865..e6564a0bd10a 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/Loader/YamlFileLoaderTest.php
@@ -88,10 +88,10 @@ public function testLoadDiscriminatorMap()
         $classMetadata = new ClassMetadata(AbstractDummy::class);
         $this->loader->loadClassMetadata($classMetadata);
 
-        $expected = new ClassMetadata(AbstractDummy::class, new ClassDiscriminatorMapping('type', array(
+        $expected = new ClassMetadata(AbstractDummy::class, new ClassDiscriminatorMapping('type', [
             'first' => AbstractDummyFirstChild::class,
             'second' => AbstractDummySecondChild::class,
-        )));
+        ]));
 
         $expected->addAttributeMetadata(new AttributeMetadata('foo'));
 
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ConstraintViolationListNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ConstraintViolationListNormalizerTest.php
index 9e8aec51477b..fa406ff22709 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ConstraintViolationListNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ConstraintViolationListNormalizerTest.php
@@ -37,29 +37,29 @@ public function testSupportsNormalization()
 
     public function testNormalize()
     {
-        $list = new ConstraintViolationList(array(
-            new ConstraintViolation('a', 'b', array(), 'c', 'd', 'e', null, 'f'),
-            new ConstraintViolation('1', '2', array(), '3', '4', '5', null, '6'),
-        ));
+        $list = new ConstraintViolationList([
+            new ConstraintViolation('a', 'b', [], 'c', 'd', 'e', null, 'f'),
+            new ConstraintViolation('1', '2', [], '3', '4', '5', null, '6'),
+        ]);
 
-        $expected = array(
+        $expected = [
             'type' => 'https://symfony.com/errors/validation',
             'title' => 'Validation Failed',
             'detail' => 'd: a
 4: 1',
-            'violations' => array(
-                    array(
+            'violations' => [
+                    [
                         'propertyPath' => 'd',
                         'title' => 'a',
                         'type' => 'urn:uuid:f',
-                    ),
-                    array(
+                    ],
+                    [
                         'propertyPath' => '4',
                         'title' => '1',
                         'type' => 'urn:uuid:6',
-                    ),
-                ),
-        );
+                    ],
+                ],
+        ];
 
         $this->assertEquals($expected, $this->normalizer->normalize($list));
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/DataUriNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/DataUriNormalizerTest.php
index e6bd915aebd4..bb2ca64129eb 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/DataUriNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/DataUriNormalizerTest.php
@@ -131,19 +131,19 @@ public function testInvalidData($uri)
 
     public function invalidUriProvider()
     {
-        return array(
-            array('dataxbase64'),
-            array('data:HelloWorld'),
-            array('data:text/html;charset=,%3Ch1%3EHello!%3C%2Fh1%3E'),
-            array('data:text/html;charset,%3Ch1%3EHello!%3C%2Fh1%3E'),
-            array('data:base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'),
-            array(''),
-            array('http://wikipedia.org'),
-            array('base64'),
-            array('iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'),
-            array(' data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'),
-            array('   data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'),
-        );
+        return [
+            ['dataxbase64'],
+            ['data:HelloWorld'],
+            ['data:text/html;charset=,%3Ch1%3EHello!%3C%2Fh1%3E'],
+            ['data:text/html;charset,%3Ch1%3EHello!%3C%2Fh1%3E'],
+            ['data:base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'],
+            [''],
+            ['http://wikipedia.org'],
+            ['base64'],
+            ['iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'],
+            [' data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'],
+            ['   data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'],
+        ];
     }
 
     /**
@@ -156,19 +156,19 @@ public function testValidData($uri)
 
     public function validUriProvider()
     {
-        return array(
-            array('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC'),
-            array('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC'),
-            array('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIBAMAAAA2IaO4AAAAFVBMVEXk5OTn5+ft7e319fX29vb5+fn///++GUmVAAAALUlEQVQIHWNICnYLZnALTgpmMGYIFWYIZTA2ZFAzTTFlSDFVMwVyQhmAwsYMAKDaBy0axX/iAAAAAElFTkSuQmCC   '),
-            array('data:,Hello%2C%20World!'),
-            array('data:text/html,%3Ch1%3EHello%2C%20World!%3C%2Fh1%3E'),
-            array('data:,A%20brief%20note'),
-            array('data:text/html;charset=US-ASCII,%3Ch1%3EHello!%3C%2Fh1%3E'),
-            array('data:application/ld+json;base64,eyJAaWQiOiAiL2ZvbyJ9'),
-            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+        return [
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+            ['data:,Hello%2C%20World!'],
+            ['data:text/html,%3Ch1%3EHello%2C%20World!%3C%2Fh1%3E'],
+            ['data:,A%20brief%20note'],
+            ['data:text/html;charset=US-ASCII,%3Ch1%3EHello!%3C%2Fh1%3E'],
+            ['data:application/ld+json;base64,eyJAaWQiOiAiL2ZvbyJ9'],
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'],
+            ['data:a!b#c&d-e^f_g+h.i/a!b#c&d-e^f_g+h.i;base64,foobar'],
+            ['data:text/plain;charset=utf-8;base64,SGVsbG8gV29ybGQh'],
+        ];
     }
 
     private function getContent(\SplFileObject $file)
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
index 35d1705d7279..b6b3b6470af7 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
@@ -69,14 +69,14 @@ public function testNormalize()
         ;
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'bar' => 'bar',
                 'baz' => true,
                 'fooBar' => 'foobar',
                 'camelCase' => 'camelcase',
                 'object' => 'string_object',
-            ),
+            ],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -84,7 +84,7 @@ public function testNormalize()
     public function testDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\ObjectDummy',
             'any'
         );
@@ -112,7 +112,7 @@ public function testDenormalizeNull()
     public function testConstructorDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\ObjectConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertEquals('bar', $obj->bar);
@@ -122,7 +122,7 @@ public function testConstructorDenormalize()
     public function testConstructorDenormalizeWithNullArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => null, 'baz' => true),
+            ['foo' => 'foo', 'bar' => null, 'baz' => true],
             __NAMESPACE__.'\ObjectConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertNull($obj->bar);
@@ -132,19 +132,19 @@ public function testConstructorDenormalizeWithNullArgument()
     public function testConstructorDenormalizeWithMissingOptionalArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'test', 'baz' => array(1, 2, 3)),
+            ['foo' => 'test', 'baz' => [1, 2, 3]],
             __NAMESPACE__.'\ObjectConstructorOptionalArgsDummy', 'any');
         $this->assertEquals('test', $obj->getFoo());
-        $this->assertEquals(array(), $obj->bar);
-        $this->assertEquals(array(1, 2, 3), $obj->getBaz());
+        $this->assertEquals([], $obj->bar);
+        $this->assertEquals([1, 2, 3], $obj->getBaz());
     }
 
     public function testConstructorDenormalizeWithOptionalDefaultArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('bar' => 'test'),
+            ['bar' => 'test'],
             __NAMESPACE__.'\ObjectConstructorArgsWithDefaultValueDummy', 'any');
-        $this->assertEquals(array(), $obj->getFoo());
+        $this->assertEquals([], $obj->getFoo());
         $this->assertEquals('test', $obj->getBar());
     }
 
@@ -162,16 +162,16 @@ public function testConstructorWithObjectDenormalize()
 
     public function testConstructorWithObjectTypeHintDenormalize()
     {
-        $data = array(
+        $data = [
             'id' => 10,
-            'inner' => array(
+            'inner' => [
                 'foo' => 'oof',
                 'bar' => 'rab',
-            ),
-        );
+            ],
+        ];
 
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
         $normalizer->setSerializer($serializer);
 
         $obj = $normalizer->denormalize($data, DummyWithConstructorObject::class);
@@ -184,13 +184,13 @@ public function testConstructorWithObjectTypeHintDenormalize()
 
     public function testConstructorWithUnconstructableNullableObjectTypeHintDenormalize()
     {
-        $data = array(
+        $data = [
             'id' => 10,
             'inner' => null,
-        );
+        ];
 
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
         $normalizer->setSerializer($serializer);
 
         $obj = $normalizer->denormalize($data, DummyWithNullableConstructorObject::class);
@@ -205,16 +205,16 @@ public function testConstructorWithUnconstructableNullableObjectTypeHintDenormal
      */
     public function testConstructorWithUnknownObjectTypeHintDenormalize()
     {
-        $data = array(
+        $data = [
             'id' => 10,
-            'unknown' => array(
+            'unknown' => [
                 'foo' => 'oof',
                 'bar' => 'rab',
-            ),
-        );
+            ],
+        ];
 
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
         $normalizer->setSerializer($serializer);
 
         $normalizer->denormalize($data, DummyWithConstructorInexistingObject::class);
@@ -226,9 +226,9 @@ public function testConstructorWithUnknownObjectTypeHintDenormalize()
      */
     public function testConstructorWithMissingData()
     {
-        $data = array(
+        $data = [
             'foo' => 10,
-        );
+        ];
 
         $normalizer = new ObjectNormalizer();
 
@@ -237,17 +237,17 @@ public function testConstructorWithMissingData()
 
     public function testFillWithEmptyDataWhenMissingData()
     {
-        $data = array(
+        $data = [
             'foo' => 10,
-        );
+        ];
 
         $normalizer = new ObjectNormalizer();
 
-        $result = $normalizer->denormalize($data, DummyValueObject::class, 'json', array(
-            'default_constructor_arguments' => array(
-                DummyValueObject::class => array('foo' => '', 'bar' => '', 'baz' => null),
-            ),
-        ));
+        $result = $normalizer->denormalize($data, DummyValueObject::class, 'json', [
+            'default_constructor_arguments' => [
+                DummyValueObject::class => ['foo' => '', 'bar' => '', 'baz' => null],
+            ],
+        ]);
 
         $this->assertEquals(new DummyValueObject(10, '', null), $result);
     }
@@ -266,18 +266,18 @@ public function testGroupsNormalize()
         $obj->setKevin('kevin');
         $obj->setCoopTilleuls('coopTilleuls');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'bar' => 'bar',
-        ), $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('c'))));
+        ], $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['c']]));
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'symfony' => 'symfony',
             'foo' => 'foo',
             'fooBar' => 'fooBar',
             'bar' => 'bar',
             'kevin' => 'kevin',
             'coopTilleuls' => 'coopTilleuls',
-        ), $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('a', 'c'))));
+        ], $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['a', 'c']]));
     }
 
     public function testGroupsDenormalize()
@@ -289,13 +289,13 @@ public function testGroupsDenormalize()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $toNormalize = array('foo' => 'foo', 'bar' => 'bar');
+        $toNormalize = ['foo' => 'foo', 'bar' => 'bar'];
 
         $normalized = $this->normalizer->denormalize(
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(ObjectNormalizer::GROUPS => array('a'))
+            [ObjectNormalizer::GROUPS => ['a']]
         );
         $this->assertEquals($obj, $normalized);
 
@@ -305,7 +305,7 @@ public function testGroupsDenormalize()
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(ObjectNormalizer::GROUPS => array('a', 'b'))
+            [ObjectNormalizer::GROUPS => ['a', 'b']]
         );
         $this->assertEquals($obj, $normalized);
     }
@@ -319,7 +319,7 @@ public function testNormalizeNoPropertyInGroup()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $this->assertEquals(array(), $this->normalizer->normalize($obj, null, array('groups' => array('notExist'))));
+        $this->assertEquals([], $this->normalizer->normalize($obj, null, ['groups' => ['notExist']]));
     }
 
     public function testGroupsNormalizeWithNameConverter()
@@ -334,12 +334,12 @@ public function testGroupsNormalizeWithNameConverter()
         $obj->setCoopTilleuls('les-tilleuls.coop');
 
         $this->assertEquals(
-            array(
+            [
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
-            ),
-            $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('name_converter')))
+            ],
+            $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -355,12 +355,12 @@ public function testGroupsDenormalizeWithNameConverter()
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array(
+            $this->normalizer->denormalize([
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
                 'coop_tilleuls' => 'les-tilleuls.coop',
-            ), 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, array(ObjectNormalizer::GROUPS => array('name_converter')))
+            ], 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, [ObjectNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -385,7 +385,7 @@ public function testCallbacks($callbacks, $value, $result, $message)
      */
     public function testUncallableCallbacks()
     {
-        $this->normalizer->setCallbacks(array('bar' => null));
+        $this->normalizer->setCallbacks(['bar' => null]);
 
         $obj = new ObjectConstructorDummy('baz', 'quux', true);
 
@@ -394,7 +394,7 @@ public function testUncallableCallbacks()
 
     public function testIgnoredAttributes()
     {
-        $this->normalizer->setIgnoredAttributes(array('foo', 'bar', 'baz', 'camelCase', 'object'));
+        $this->normalizer->setIgnoredAttributes(['foo', 'bar', 'baz', 'camelCase', 'object']);
 
         $obj = new ObjectDummy();
         $obj->setFoo('foo');
@@ -402,41 +402,41 @@ public function testIgnoredAttributes()
         $obj->setBaz(true);
 
         $this->assertEquals(
-            array('fooBar' => 'foobar'),
+            ['fooBar' => 'foobar'],
             $this->normalizer->normalize($obj, 'any')
         );
     }
 
     public function testIgnoredAttributesDenormalize()
     {
-        $this->normalizer->setIgnoredAttributes(array('fooBar', 'bar', 'baz'));
+        $this->normalizer->setIgnoredAttributes(['fooBar', 'bar', 'baz']);
 
         $obj = new ObjectDummy();
         $obj->setFoo('foo');
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array('fooBar' => 'fooBar', 'foo' => 'foo', 'baz' => 'baz'), __NAMESPACE__.'\ObjectDummy')
+            $this->normalizer->denormalize(['fooBar' => 'fooBar', 'foo' => 'foo', 'baz' => 'baz'], __NAMESPACE__.'\ObjectDummy')
         );
     }
 
     public function provideCallbacks()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'bar' => function ($bar) {
                         $this->assertEquals('baz', $bar);
 
                         return 'baz';
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => 'baz', 'baz' => true),
+                ['foo' => '', 'bar' => 'baz', 'baz' => true],
                 'Change a string',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($value, $object, $attributeName, $format, $context) {
                         $this->assertSame('baz', $value);
                         $this->assertInstanceOf(ObjectConstructorDummy::class, $object);
@@ -444,23 +444,23 @@ public function provideCallbacks()
                         $this->assertSame('any', $format);
                         $this->assertArrayHasKey('circular_reference_limit', $context);
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => null, 'baz' => true),
+                ['foo' => '', 'bar' => null, 'baz' => true],
                 'Null an item',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return $bar->format('d-m-Y H:i:s');
                     },
-                ),
+                ],
                 new \DateTime('2011-09-10 06:30:00'),
-                array('foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true),
+                ['foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true],
                 'Format a date',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         $foos = '';
                         foreach ($bars as $bar) {
@@ -469,22 +469,22 @@ public function provideCallbacks()
 
                         return $foos;
                     },
-                ),
-                array(new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 'bazquux', 'baz' => true),
+                ],
+                [new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 'bazquux', 'baz' => true],
                 'Collect a property',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         return \count($bars);
                     },
-                ),
-                array(new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 2, 'baz' => true),
+                ],
+                [new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 2, 'baz' => true],
                 'Count a property',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -508,7 +508,7 @@ public function testUnableToNormalizeObjectAttribute()
      */
     public function testUnableToNormalizeCircularReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
         $this->normalizer->setCircularReferenceLimit(2);
 
@@ -519,22 +519,22 @@ public function testUnableToNormalizeCircularReference()
 
     public function testSiblingReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $siblingHolder = new SiblingHolder();
 
-        $expected = array(
-            'sibling0' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling1' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling2' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-        );
+        $expected = [
+            'sibling0' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling1' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling2' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+        ];
         $this->assertEquals($expected, $this->normalizer->normalize($siblingHolder));
     }
 
     public function testCircularReferenceHandler()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
         $this->normalizer->setCircularReferenceHandler(function ($obj) {
             return \get_class($obj);
@@ -542,7 +542,7 @@ public function testCircularReferenceHandler()
 
         $obj = new CircularReferenceDummy();
 
-        $expected = array('me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy');
+        $expected = ['me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy'];
         $this->assertEquals($expected, $this->normalizer->normalize($obj));
     }
 
@@ -550,7 +550,7 @@ public function testDenormalizeNonExistingAttribute()
     {
         $this->assertEquals(
             new ObjectDummy(),
-            $this->normalizer->denormalize(array('non_existing' => true), __NAMESPACE__.'\ObjectDummy')
+            $this->normalizer->denormalize(['non_existing' => true], __NAMESPACE__.'\ObjectDummy')
         );
     }
 
@@ -561,35 +561,35 @@ public function testNoTraversableSupport()
 
     public function testNormalizeStatic()
     {
-        $this->assertEquals(array('foo' => 'K'), $this->normalizer->normalize(new ObjectWithStaticPropertiesAndMethods()));
+        $this->assertEquals(['foo' => 'K'], $this->normalizer->normalize(new ObjectWithStaticPropertiesAndMethods()));
     }
 
     public function testNormalizeUpperCaseAttributes()
     {
-        $this->assertEquals(array('Foo' => 'Foo', 'Bar' => 'BarBar'), $this->normalizer->normalize(new ObjectWithUpperCaseAttributeNames()));
+        $this->assertEquals(['Foo' => 'Foo', 'Bar' => 'BarBar'], $this->normalizer->normalize(new ObjectWithUpperCaseAttributeNames()));
     }
 
     public function testNormalizeNotSerializableContext()
     {
         $objectDummy = new ObjectDummy();
-        $expected = array(
+        $expected = [
             'foo' => null,
             'baz' => null,
             'fooBar' => '',
             'camelCase' => null,
             'object' => null,
             'bar' => null,
-        );
+        ];
 
-        $this->assertEquals($expected, $this->normalizer->normalize($objectDummy, null, array('not_serializable' => function () {
-        })));
+        $this->assertEquals($expected, $this->normalizer->normalize($objectDummy, null, ['not_serializable' => function () {
+        }]));
     }
 
     public function testMaxDepth()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new ObjectNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $level1 = new MaxDepthDummy();
@@ -603,42 +603,42 @@ public function testMaxDepth()
         $level3->foo = 'level3';
         $level2->child = $level3;
 
-        $result = $serializer->normalize($level1, null, array(ObjectNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $serializer->normalize($level1, null, [ObjectNormalizer::ENABLE_MAX_DEPTH => true]);
 
-        $expected = array(
+        $expected = [
             'bar' => null,
             'foo' => 'level1',
-            'child' => array(
+            'child' => [
                     'bar' => null,
                     'foo' => 'level2',
-                    'child' => array(
+                    'child' => [
                             'bar' => null,
                             'child' => null,
-                        ),
-                ),
-        );
+                        ],
+                ],
+        ];
 
         $this->assertEquals($expected, $result);
 
-        $expected = array(
+        $expected = [
             'bar' => null,
             'foo' => 'level1',
-            'child' => array(
+            'child' => [
                 'bar' => null,
                 'foo' => 'level2',
-                'child' => array(
+                'child' => [
                     'bar' => null,
                     'child' => null,
                     'foo' => 'handler',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
         $this->normalizer->setMaxDepthHandler(function ($obj) {
             return 'handler';
         });
 
-        $result = $serializer->normalize($level1, null, array(ObjectNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $serializer->normalize($level1, null, [ObjectNormalizer::ENABLE_MAX_DEPTH => true]);
         $this->assertEquals($expected, $result);
 
         $this->normalizer->setMaxDepthHandler(function ($object, $parentObject, $attributeName, $format, $context) {
@@ -651,7 +651,7 @@ public function testMaxDepth()
             return 'handler';
         });
 
-        $serializer->normalize($level1, 'test', array(ObjectNormalizer::ENABLE_MAX_DEPTH => true));
+        $serializer->normalize($level1, 'test', [ObjectNormalizer::ENABLE_MAX_DEPTH => true]);
     }
 
     /**
@@ -659,20 +659,20 @@ public function testMaxDepth()
      */
     public function testThrowUnexpectedValueException()
     {
-        $this->normalizer->denormalize(array('foo' => 'bar'), ObjectTypeHinted::class);
+        $this->normalizer->denormalize(['foo' => 'bar'], ObjectTypeHinted::class);
     }
 
     public function testDenomalizeRecursive()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $obj = $serializer->denormalize(array(
-            'inner' => array('foo' => 'foo', 'bar' => 'bar'),
+        $obj = $serializer->denormalize([
+            'inner' => ['foo' => 'foo', 'bar' => 'bar'],
             'date' => '1988/01/21',
-            'inners' => array(array('foo' => 1), array('foo' => 2)),
-        ), ObjectOuter::class);
+            'inners' => [['foo' => 1], ['foo' => 2]],
+        ], ObjectOuter::class);
 
         $this->assertSame('foo', $obj->getInner()->foo);
         $this->assertSame('bar', $obj->getInner()->bar);
@@ -683,12 +683,12 @@ public function testDenomalizeRecursive()
 
     public function testAcceptJsonNumber()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $this->assertSame(10.0, $serializer->denormalize(array('number' => 10), JsonNumber::class, 'json')->number);
-        $this->assertSame(10.0, $serializer->denormalize(array('number' => 10), JsonNumber::class, 'jsonld')->number);
+        $this->assertSame(10.0, $serializer->denormalize(['number' => 10], JsonNumber::class, 'json')->number);
+        $this->assertSame(10.0, $serializer->denormalize(['number' => 10], JsonNumber::class, 'jsonld')->number);
     }
 
     /**
@@ -698,9 +698,9 @@ public function testAcceptJsonNumber()
     public function testRejectInvalidType()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
-        $serializer->denormalize(array('date' => 'foo'), ObjectOuter::class);
+        $serializer->denormalize(['date' => 'foo'], ObjectOuter::class);
     }
 
     /**
@@ -709,21 +709,21 @@ public function testRejectInvalidType()
      */
     public function testRejectInvalidKey()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $serializer->denormalize(array('inners' => array('a' => array('foo' => 1))), ObjectOuter::class);
+        $serializer->denormalize(['inners' => ['a' => ['foo' => 1]]], ObjectOuter::class);
     }
 
     public function testDoNotRejectInvalidTypeOnDisableTypeEnforcementContextOption()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array($normalizer));
-        $context = array(ObjectNormalizer::DISABLE_TYPE_ENFORCEMENT => true);
+        $serializer = new Serializer([$normalizer]);
+        $context = [ObjectNormalizer::DISABLE_TYPE_ENFORCEMENT => true];
 
-        $this->assertSame('foo', $serializer->denormalize(array('number' => 'foo'), JsonNumber::class, null, $context)->number);
+        $this->assertSame('foo', $serializer->denormalize(['number' => 'foo'], JsonNumber::class, null, $context)->number);
     }
 
     public function testExtractAttributesRespectsFormat()
@@ -734,7 +734,7 @@ public function testExtractAttributesRespectsFormat()
         $data->setFoo('bar');
         $data->bar = 'foo';
 
-        $this->assertSame(array('foo' => 'bar', 'bar' => 'foo'), $normalizer->normalize($data, 'foo_and_bar_included'));
+        $this->assertSame(['foo' => 'bar', 'bar' => 'foo'], $normalizer->normalize($data, 'foo_and_bar_included'));
     }
 
     public function testExtractAttributesRespectsContext()
@@ -745,13 +745,13 @@ public function testExtractAttributesRespectsContext()
         $data->setFoo('bar');
         $data->bar = 'foo';
 
-        $this->assertSame(array('foo' => 'bar', 'bar' => 'foo'), $normalizer->normalize($data, null, array('include_foo_and_bar' => true)));
+        $this->assertSame(['foo' => 'bar', 'bar' => 'foo'], $normalizer->normalize($data, null, ['include_foo_and_bar' => true]));
     }
 
     public function testAttributesContextNormalize()
     {
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->foo = 'innerFoo';
@@ -762,23 +762,23 @@ public function testAttributesContextNormalize()
         $objectDummy->setBaz(true);
         $objectDummy->setObject($objectInner);
 
-        $context = array('attributes' => array('foo', 'baz', 'object' => array('foo')));
+        $context = ['attributes' => ['foo', 'baz', 'object' => ['foo']]];
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'baz' => true,
-                'object' => array('foo' => 'innerFoo'),
-            ),
+                'object' => ['foo' => 'innerFoo'],
+            ],
             $serializer->normalize($objectDummy, null, $context)
         );
 
-        $context = array('attributes' => array('foo', 'baz', 'object'));
+        $context = ['attributes' => ['foo', 'baz', 'object']];
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'baz' => true,
-                'object' => array('foo' => 'innerFoo', 'bar' => 'innerBar'),
-            ),
+                'object' => ['foo' => 'innerFoo', 'bar' => 'innerBar'],
+            ],
             $serializer->normalize($objectDummy, null, $context)
         );
     }
@@ -786,7 +786,7 @@ public function testAttributesContextNormalize()
     public function testAttributesContextDenormalize()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->foo = 'innerFoo';
@@ -795,38 +795,38 @@ public function testAttributesContextDenormalize()
         $objectOuter->bar = 'bar';
         $objectOuter->setInner($objectInner);
 
-        $context = array('attributes' => array('bar', 'inner' => array('foo')));
+        $context = ['attributes' => ['bar', 'inner' => ['foo']]];
         $this->assertEquals($objectOuter, $serializer->denormalize(
-            array(
+            [
                 'foo' => 'foo',
                 'bar' => 'bar',
                 'date' => '2017-02-03',
-                'inner' => array('foo' => 'innerFoo', 'bar' => 'innerBar'),
-            ), ObjectOuter::class, null, $context));
+                'inner' => ['foo' => 'innerFoo', 'bar' => 'innerBar'],
+            ], ObjectOuter::class, null, $context));
     }
 
     public function testAttributesContextDenormalizeConstructor()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->bar = 'bar';
 
         $obj = new DummyWithConstructorObjectAndDefaultValue('a', $objectInner);
 
-        $context = array('attributes' => array('inner' => array('bar')));
-        $this->assertEquals($obj, $serializer->denormalize(array(
+        $context = ['attributes' => ['inner' => ['bar']]];
+        $this->assertEquals($obj, $serializer->denormalize([
             'foo' => 'b',
-            'inner' => array('foo' => 'foo', 'bar' => 'bar'),
-        ), DummyWithConstructorObjectAndDefaultValue::class, null, $context));
+            'inner' => ['foo' => 'foo', 'bar' => 'bar'],
+        ], DummyWithConstructorObjectAndDefaultValue::class, null, $context));
     }
 
     public function testNormalizeSameObjectWithDifferentAttributes()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new ObjectNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $dummy = new ObjectOuter();
@@ -838,19 +838,19 @@ public function testNormalizeSameObjectWithDifferentAttributes()
         $dummy->bar->foo = 'bar.foo';
         $dummy->bar->bar = 'bar.bar';
 
-        $this->assertEquals(array(
-            'foo' => array(
+        $this->assertEquals([
+            'foo' => [
                 'bar' => 'foo.bar',
-            ),
-            'bar' => array(
+            ],
+            'bar' => [
                 'foo' => 'bar.foo',
-            ),
-        ), $this->normalizer->normalize($dummy, 'json', array(
-            'attributes' => array(
-                'foo' => array('bar'),
-                'bar' => array('foo'),
-            ),
-        )));
+            ],
+        ], $this->normalizer->normalize($dummy, 'json', [
+            'attributes' => [
+                'foo' => ['bar'],
+                'bar' => ['foo'],
+            ],
+        ]));
     }
 }
 
@@ -952,7 +952,7 @@ class ObjectConstructorOptionalArgsDummy
     public $bar;
     private $baz;
 
-    public function __construct($foo, $bar = array(), $baz = array())
+    public function __construct($foo, $bar = [], $baz = [])
     {
         $this->foo = $foo;
         $this->bar = $bar;
@@ -980,7 +980,7 @@ class ObjectConstructorArgsWithDefaultValueDummy
     protected $foo;
     protected $bar;
 
-    public function __construct($foo = array(), $bar)
+    public function __construct($foo = [], $bar)
     {
         $this->foo = $foo;
         $this->bar = $bar;
@@ -1071,13 +1071,13 @@ class ObjectInner
 
 class FormatAndContextAwareNormalizer extends ObjectNormalizer
 {
-    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = array())
+    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = [])
     {
-        if (\in_array($attribute, array('foo', 'bar')) && 'foo_and_bar_included' === $format) {
+        if (\in_array($attribute, ['foo', 'bar']) && 'foo_and_bar_included' === $format) {
             return true;
         }
 
-        if (\in_array($attribute, array('foo', 'bar')) && isset($context['include_foo_and_bar']) && true === $context['include_foo_and_bar']) {
+        if (\in_array($attribute, ['foo', 'bar']) && isset($context['include_foo_and_bar']) && true === $context['include_foo_and_bar']) {
             return true;
         }
 
diff --git a/src/Symfony/Component/Serializer/Tests/SerializerTest.php b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
index 3ed6a824a38a..2b3999f3652e 100644
--- a/src/Symfony/Component/Serializer/Tests/SerializerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
@@ -366,28 +366,28 @@ public function testDeserializeAndSerializeAbstractObjectsWithTheClassMetadataDi
         $example = new AbstractDummyFirstChild('foo-value', 'bar-value');
 
         $loaderMock = $this->getMockBuilder(ClassMetadataFactoryInterface::class)->getMock();
-        $loaderMock->method('hasMetadataFor')->will($this->returnValueMap(array(
-            array(
+        $loaderMock->method('hasMetadataFor')->will($this->returnValueMap([
+            [
                 AbstractDummy::class,
                 true,
-            ),
-        )));
+            ],
+        ]));
 
-        $loaderMock->method('getMetadataFor')->will($this->returnValueMap(array(
-            array(
+        $loaderMock->method('getMetadataFor')->will($this->returnValueMap([
+            [
                 AbstractDummy::class,
                 new ClassMetadata(
                     AbstractDummy::class,
-                    new ClassDiscriminatorMapping('type', array(
+                    new ClassDiscriminatorMapping('type', [
                         'first' => AbstractDummyFirstChild::class,
                         'second' => AbstractDummySecondChild::class,
-                    ))
+                    ])
                 ),
-            ),
-        )));
+            ],
+        ]));
 
         $discriminatorResolver = new ClassDiscriminatorFromClassMetadata($loaderMock);
-        $serializer = new Serializer(array(new ObjectNormalizer(null, null, null, null, $discriminatorResolver)), array('json' => new JsonEncoder()));
+        $serializer = new Serializer([new ObjectNormalizer(null, null, null, null, $discriminatorResolver)], ['json' => new JsonEncoder()]);
 
         $jsonData = '{"type":"first","bar":"bar-value","foo":"foo-value"}';
 
@@ -419,15 +419,15 @@ public function testDeserializeAndSerializeInterfacedObjectsWithTheClassMetadata
         $example->two = 2;
 
         $serializer = $this->serializerWithClassDiscriminator();
-        $deserialized = $serializer->deserialize('{"type":"one","one":1,"two":2}', DummyMessageInterface::class, 'json', array(
-            'groups' => array('two'),
-        ));
+        $deserialized = $serializer->deserialize('{"type":"one","one":1,"two":2}', DummyMessageInterface::class, 'json', [
+            'groups' => ['two'],
+        ]);
 
         $this->assertEquals($example, $deserialized);
 
-        $serialized = $serializer->serialize($deserialized, 'json', array(
-            'groups' => array('two'),
-        ));
+        $serialized = $serializer->serialize($deserialized, 'json', [
+            'groups' => ['two'],
+        ]);
 
         $this->assertEquals('{"two":2,"type":"one"}', $serialized);
     }
@@ -470,7 +470,7 @@ private function serializerWithClassDiscriminator()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
 
-        return new Serializer(array(new ObjectNormalizer($classMetadataFactory, null, null, new ReflectionExtractor(), new ClassDiscriminatorFromClassMetadata($classMetadataFactory))), array('json' => new JsonEncoder()));
+        return new Serializer([new ObjectNormalizer($classMetadataFactory, null, null, new ReflectionExtractor(), new ClassDiscriminatorFromClassMetadata($classMetadataFactory))], ['json' => new JsonEncoder()]);
     }
 }
 
diff --git a/src/Symfony/Component/Translation/Command/XliffLintCommand.php b/src/Symfony/Component/Translation/Command/XliffLintCommand.php
index 4d1704e209b3..3ab6fbb30db6 100644
--- a/src/Symfony/Component/Translation/Command/XliffLintCommand.php
+++ b/src/Symfony/Component/Translation/Command/XliffLintCommand.php
@@ -85,14 +85,14 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
             }
 
-            return $this->display($io, array($this->validate($stdin)));
+            return $this->display($io, [$this->validate($stdin)]);
         }
 
         if (!$this->isReadable($filename)) {
             throw new RuntimeException(sprintf('File or directory "%s" is not readable.', $filename));
         }
 
-        $filesInfo = array();
+        $filesInfo = [];
         foreach ($this->getFiles($filename) as $file) {
             $filesInfo[] = $this->validate(file_get_contents($file), $file);
         }
@@ -102,11 +102,11 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
     private function validate($content, $file = null)
     {
-        $errors = array();
+        $errors = [];
 
         // Avoid: Warning DOMDocument::loadXML(): Empty string supplied as input
         if ('' === trim($content)) {
-            return array('file' => $file, 'valid' => true);
+            return ['file' => $file, 'valid' => true];
         }
 
         libxml_use_internal_errors(true);
@@ -119,27 +119,27 @@ private function validate($content, $file = null)
             $realFileExtension = explode('.', basename($file), 2)[1] ?? '';
 
             if ($expectedFileExtension !== $realFileExtension) {
-                $errors[] = array(
+                $errors[] = [
                     'line' => -1,
                     'column' => -1,
                     'message' => sprintf('There is a mismatch between the file extension ("%s") and the "%s" value used in the "target-language" attribute of the file.', $realFileExtension, $targetLanguage),
-                );
+                ];
             }
         }
 
         $document->schemaValidate(__DIR__.'/../Resources/schemas/xliff-core-1.2-strict.xsd');
         foreach (libxml_get_errors() as $xmlError) {
-            $errors[] = array(
+            $errors[] = [
                 'line' => $xmlError->line,
                 'column' => $xmlError->column,
                 'message' => trim($xmlError->message),
-            );
+            ];
         }
 
         libxml_clear_errors();
         libxml_use_internal_errors(false);
 
-        return array('file' => $file, 'valid' => 0 === \count($errors), 'messages' => $errors);
+        return ['file' => $file, 'valid' => 0 === \count($errors), 'messages' => $errors];
     }
 
     private function display(SymfonyStyle $io, array $files)
@@ -206,7 +206,7 @@ private function getFiles($fileOrDirectory)
         }
 
         foreach ($this->getDirectoryIterator($fileOrDirectory) as $file) {
-            if (!\in_array($file->getExtension(), array('xlf', 'xliff'))) {
+            if (!\in_array($file->getExtension(), ['xlf', 'xliff'])) {
                 continue;
             }
 
@@ -259,7 +259,7 @@ private function isReadable($fileOrDirectory)
 
     private function getTargetLanguageFromFile(\DOMDocument $xliffContents): ?string
     {
-        foreach ($xliffContents->getElementsByTagName('file')[0]->attributes ?? array() as $attribute) {
+        foreach ($xliffContents->getElementsByTagName('file')[0]->attributes ?? [] as $attribute) {
             if ('target-language' === $attribute->nodeName) {
10000

                 return $attribute->nodeValue;
             }
diff --git a/src/Symfony/Component/Translation/DependencyInjection/TranslatorPass.php b/src/Symfony/Component/Translation/DependencyInjection/TranslatorPass.php
index cbaa43db96ee..fc1c08fc32c7 100644
--- a/src/Symfony/Component/Translation/DependencyInjection/TranslatorPass.php
+++ b/src/Symfony/Component/Translation/DependencyInjection/TranslatorPass.php
@@ -39,8 +39,8 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $loaders = array();
-        $loaderRefs = array();
+        $loaders = [];
+        $loaderRefs = [];
         foreach ($container->findTaggedServiceIds($this->loaderTag, true) as $id => $attributes) {
             $loaderRefs[$id] = new Reference($id);
             $loaders[$id][] = $attributes[0]['alias'];
@@ -53,7 +53,7 @@ public function process(ContainerBuilder $container)
             $definition = $container->getDefinition($this->readerServiceId);
             foreach ($loaders as $id => $formats) {
                 foreach ($formats as $format) {
-                    $definition->addMethodCall('addLoader', array($format, $loaderRefs[$id]));
+                    $definition->addMethodCall('addLoader', [$format, $loaderRefs[$id]]);
                 }
             }
         }
diff --git a/src/Symfony/Component/Translation/MessageCatalogue.php b/src/Symfony/Component/Translation/MessageCatalogue.php
index c36ea30ec04f..65e7bc6770d3 100644
--- a/src/Symfony/Component/Translation/MessageCatalogue.php
+++ b/src/Symfony/Component/Translation/MessageCatalogue.php
@@ -19,9 +19,9 @@
  */
 class MessageCatalogue implements MessageCatalogueInterface, MetadataAwareInterface
 {
-    private $messages = array();
-    private $metadata = array();
-    private $resources = array();
+    private $messages = [];
+    private $metadata = [];
+    private $resources = [];
     private $locale;
     private $fallbackCatalogue;
     private $parent;
@@ -30,7 +30,7 @@ class MessageCatalogue implements MessageCatalogueInterface, MetadataAwareInterf
      * @param string $locale   The locale
      * @param array  $messages An array of messages classified by domain
      */
-    public function __construct(?string $locale, array $messages = array())
+    public function __construct(?string $locale, array $messages = [])
     {
         $this->locale = $locale;
         $this->messages = $messages;
@@ -61,7 +61,7 @@ public function all($domain = null)
             return $this->messages;
         }
 
-        return isset($this->messages[$domain]) ? $this->messages[$domain] : array();
+        return isset($this->messages[$domain]) ? $this->messages[$domain] : [];
     }
 
     /**
@@ -69,7 +69,7 @@ public function all($domain = null)
      */
     public function set($id, $translation, $domain = 'messages')
     {
-        $this->add(array($id => $translation), $domain);
+        $this->add([$id => $translation], $domain);
     }
 
     /**
@@ -117,7 +117,7 @@ public function get($id, $domain = 'messages')
      */
     public function replace($messages, $domain = 'messages')
     {
-        $this->messages[$domain] = array();
+        $this->messages[$domain] = [];
 
         $this->add($messages, $domain);
     }
@@ -247,7 +247,7 @@ public function setMetadata($key, $value, $domain = 'messages')
     public function deleteMetadata($key = '', $domain = 'messages')
     {
         if ('' == $domain) {
-            $this->metadata = array();
+            $this->metadata = [];
         } elseif ('' == $key) {
             unset($this->metadata[$domain]);
         } else {
diff --git a/src/Symfony/Component/Translation/Tests/Command/XliffLintCommandTest.php b/src/Symfony/Component/Translation/Tests/Command/XliffLintCommandTest.php
index e37600c3ebb8..95160c427874 100644
--- a/src/Symfony/Component/Translation/Tests/Command/XliffLintCommandTest.php
+++ b/src/Symfony/Component/Translation/Tests/Command/XliffLintCommandTest.php
@@ -32,8 +32,8 @@ public function testLintCorrectFile()
         $filename = $this->createFile();
 
         $tester->execute(
-            array('filename' => $filename),
-            array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false)
+            ['filename' => $filename],
+            ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]
         );
 
         $this->assertEquals(0, $tester->getStatusCode(), 'Returns 0 in case of success');
@@ -45,7 +45,7 @@ public function testLintIncorrectXmlSyntax()
         $tester = $this->createCommandTester();
         $filename = $this->createFile('note <target>');
 
-        $tester->execute(array('filename' => $filename), array('decorated' => false));
+        $tester->execute(['filename' => $filename], ['decorated' => false]);
 
         $this->assertEquals(1, $tester->getStatusCode(), 'Returns 1 in case of error');
         $this->assertContains('Opening and ending tag mismatch: target line 6 and source', trim($tester->getDisplay()));
@@ -56,7 +56,7 @@ public function testLintIncorrectTargetLanguage()
         $tester = $this->createCommandTester();
         $filename = $this->createFile('note', 'es');
 
-        $tester->execute(array('filename' => $filename), array('decorated' => false));
+        $tester->execute(['filename' => $filename], ['decorated' => false]);
 
         $this->assertEquals(1, $tester->getStatusCode(), 'Returns 1 in case of error');
         $this->assertContains('There is a mismatch between the file extension ("en.xlf") and the "es" value used in the "target-language" attribute of the file.', trim($tester->getDisplay()));
@@ -71,7 +71,7 @@ public function testLintFileNotReadable()
         $filename = $this->createFile();
         unlink($filename);
 
-        $tester->execute(array('filename' => $filename), array('decorated' => false));
+        $tester->execute(['filename' => $filename], ['decorated' => false]);
     }
 
     public function testGetHelp()
@@ -147,7 +147,7 @@ private function createCommandTester($application = null)
 
     protected function setUp()
     {
-        $this->files = array();
+        $this->files = [];
         @mkdir(sys_get_temp_dir().'/translation-xliff-lint-test');
     }
 
diff --git a/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationPassTest.php b/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationPassTest.php
index 4082d169c43b..8b9c03d991d7 100644
--- a/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationPassTest.php
+++ b/src/Symfony/Component/Translation/Tests/DependencyInjection/TranslationPassTest.php
@@ -23,12 +23,12 @@ class TranslationPassTest extends TestCase
     public function testValidCollector()
     {
         $loader = (new Definition())
-            ->addTag('translation.loader', array('alias' => 'xliff', 'legacy-alias' => 'xlf'));
+            ->addTag('translation.loader', ['alias' => 'xliff', 'legacy-alias' => 'xlf']);
 
         $reader = new Definition();
 
         $translator = (new Definition())
-            ->setArguments(array(null, null, null, null));
+            ->setArguments([null, null, null, null]);
 
         $container = new ContainerBuilder();
         $container->setDefinition('translator.default', $translator);
@@ -39,19 +39,19 @@ public function testValidCollector()
         $pass->process($container);
 
         $expectedReader = (new Definition())
-            ->addMethodCall('addLoader', array('xliff', new Reference('translation.xliff_loader')))
-            ->addMethodCall('addLoader', array('xlf', new Reference('translation.xliff_loader')))
+            ->addMethodCall('addLoader', ['xliff', new Reference('translation.xliff_loader')])
+            ->addMethodCall('addLoader', ['xlf', new Reference('translation.xliff_loader')])
         ;
         $this->assertEquals($expectedReader, $reader);
 
         $expectedLoader = (new Definition())
-            ->addTag('translation.loader', array('alias' => 'xliff', 'legacy-alias' => 'xlf'))
+            ->addTag('translation.loader', ['alias' => 'xliff', 'legacy-alias' => 'xlf'])
         ;
         $this->assertEquals($expectedLoader, $loader);
 
-        $this->assertSame(array('translation.xliff_loader' => array('xliff', 'xlf')), $translator->getArgument(3));
+        $this->assertSame(['translation.xliff_loader' => ['xliff', 'xlf']], $translator->getArgument(3));
 
-        $expected = array('translation.xliff_loader' => new ServiceClosureArgument(new Reference('translation.xliff_loader')));
+        $expected = ['translation.xliff_loader' => new ServiceClosureArgument(new Reference('translation.xliff_loader'))];
         $this->assertEquals($expected, $container->getDefinition((string) $translator->getArgument(0))->getArgument(0));
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
index d1524d6e53dc..1b7fdeb3d3a1 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
@@ -22,10 +22,10 @@ public function testDump()
         $tempDir = sys_get_temp_dir();
 
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new ConcreteFileDumper();
-        $dumper->dump($catalogue, array('path' => $tempDir));
+        $dumper->dump($catalogue, ['path' => $tempDir]);
 
         $this->assertFileExists($tempDir.'/messages.en.concrete');
 
@@ -39,11 +39,11 @@ public function testDumpCreatesNestedDirectoriesAndFile()
         $file = $translationsDir.'/messages.en.concrete';
 
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'));
+        $catalogue->add(['foo' => 'bar']);
 
         $dumper = new ConcreteFileDumper();
         $dumper->setRelativePathTemplate('test/translations/%domain%.%locale%.%extension%');
-        $dumper->dump($catalogue, array('path' => $tempDir));
+        $dumper->dump($catalogue, ['path' => $tempDir]);
 
         $this->assertFileExists($file);
 
@@ -54,7 +54,7 @@ public function testDumpCreatesNestedDirectoriesAndFile()
 
 class ConcreteFileDumper extends FileDumper
 {
-    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = array())
+    public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
     {
         return '';
     }
diff --git a/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php b/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
index ab66af13e7d9..d3b6754d3308 100644
--- a/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
+++ b/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
@@ -49,7 +49,7 @@ public function testDisableBackup()
 
 class NonBackupDumper implements DumperInterface
 {
-    public function dump(MessageCatalogue $messages, $options = array())
+    public function dump(MessageCatalogue $messages, $options = [])
     {
     }
 }
@@ -58,7 +58,7 @@ class BackupDumper implements DumperInterface
 {
     public $backup = true;
 
-    public function dump(MessageCatalogue $messages, $options = array())
+    public function dump(MessageCatalogue $messages, $options = [])
     {
     }
 
diff --git a/src/Symfony/Component/Translation/Writer/TranslationWriter.php b/src/Symfony/Component/Translation/Writer/TranslationWriter.php
index 762733b4f2d5..a44d24c13605 100644
--- a/src/Symfony/Component/Translation/Writer/TranslationWriter.php
+++ b/src/Symfony/Component/Translation/Writer/TranslationWriter.php
@@ -23,7 +23,7 @@
  */
 class TranslationWriter implements TranslationWriterInterface
 {
-    private $dumpers = array();
+    private $dumpers = [];
 
     /**
      * Adds a dumper to the writer.
@@ -71,7 +71,7 @@ public function getFormats()
      *
      * @throws InvalidArgumentException
      */
-    public function write(MessageCatalogue $catalogue, $format, $options = array())
+    public function write(MessageCatalogue $catalogue, $format, $options = [])
     {
         if (!isset($this->dumpers[$format])) {
             throw new InvalidArgumentException(sprintf('There is no dumper associated with format "%s".', $format));
diff --git a/src/Symfony/Component/Validator/Constraints/Email.php b/src/Symfony/Component/Validator/Constraints/Email.php
index 887441fcdaa3..0bd09b6a4bcd 100644
--- a/src/Symfony/Component/Validator/Constraints/Email.php
+++ b/src/Symfony/Component/Validator/Constraints/Email.php
@@ -40,11 +40,11 @@ class Email extends Constraint
      *
      * @internal
      */
-    public static $validationModes = array(
+    public static $validationModes = [
         self::VALIDATION_MODE_HTML5,
         self::VALIDATION_MODE_STRICT,
         self::VALIDATION_MODE_LOOSE,
-    );
+    ];
 
     public $message = 'This value is not a valid email address.';
     public $checkMX = false;
diff --git a/src/Symfony/Component/Validator/Constraints/EmailValidator.php b/src/Symfony/Component/Validator/Constraints/EmailValidator.php
index 15bb8dda13cb..28b22cc5cd8c 100644
--- a/src/Symfony/Component/Validator/Constraints/EmailValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/EmailValidator.php
@@ -33,10 +33,10 @@ class EmailValidator extends ConstraintValidator
      */
     const PATTERN_LOOSE = '/^.+\@\S+\.\S+$/';
 
-    private static $emailPatterns = array(
+    private static $emailPatterns = [
         Email::VALIDATION_MODE_LOOSE => self::PATTERN_LOOSE,
         Email::VALIDATION_MODE_HTML5 => self::PATTERN_HTML5,
-    );
+    ];
 
     /**
      * @var string
diff --git a/src/Symfony/Component/Validator/Constraints/Expression.php b/src/Symfony/Component/Validator/Constraints/Expression.php
index 6f9d6a2fe1f5..25e9c9034e29 100644
--- a/src/Symfony/Component/Validator/Constraints/Expression.php
+++ b/src/Symfony/Component/Validator/Constraints/Expression.php
@@ -30,7 +30,7 @@ class Expression extends Constraint
 
     public $message = 'This value is not valid.';
     public $expression;
-    public $values = array();
+    public $values = [];
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/Validator/Constraints/Url.php b/src/Symfony/Component/Validator/Constraints/Url.php
index abedcf29d926..2a237bffad3c 100644
--- a/src/Symfony/Component/Validator/Constraints/Url.php
+++ b/src/Symfony/Component/Validator/Constraints/Url.php
@@ -88,9 +88,9 @@ class Url extends Constraint
 
     const INVALID_URL_ERROR = '57c2f299-1154-4870-89bb-ef3b1f5ad229';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::INVALID_URL_ERROR => 'INVALID_URL_ERROR',
-    );
+    ];
 
     public $message = 'This value is not a valid URL.';
 
@@ -98,7 +98,7 @@ class Url extends Constraint
      * @deprecated since Symfony 4.1
      */
     public $dnsMessage = 'The host could not be resolved.';
-    public $protocols = array('http', 'https');
+    public $protocols = ['http', 'https'];
 
     /**
      * @deprecated since Symfony 4.1
diff --git a/src/Symfony/Component/Validator/Constraints/UrlValidator.php b/src/Symfony/Component/Validator/Constraints/UrlValidator.php
index 35c63a06dc9c..497f199c2e31 100644
--- a/src/Symfony/Component/Validator/Constraints/UrlValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/UrlValidator.php
@@ -74,7 +74,7 @@ public function validate($value, Constraint $constraint)
         }
 
         if ($constraint->checkDNS) {
-            if (!\in_array($constraint->checkDNS, array(
+            if (!\in_array($constraint->checkDNS, [
                 Url::CHECK_DNS_TYPE_ANY,
                 Url::CHECK_DNS_TYPE_A,
                 Url::CHECK_DNS_TYPE_A6,
@@ -87,8 +87,8 @@ public function validate($value, Constraint $constraint)
                 Url::CHECK_DNS_TYPE_SOA,
                 Url::CHECK_DNS_TYPE_SRV,
                 Url::CHECK_DNS_TYPE_TXT,
-            ), true)) {
-                throw new InvalidOptionsException(sprintf('Invalid value for option "checkDNS" in constraint %s', \get_class($constraint)), array('checkDNS'));
+            ], true)) {
+                throw new InvalidOptionsException(sprintf('Invalid value for option "checkDNS" in constraint %s', \get_class($constraint)), ['checkDNS']);
             }
 
             $host = parse_url($value, PHP_URL_HOST);
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
index 38607bb9a889..b2b7bbc5ab40 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ChoiceValidatorTest.php
@@ -17,7 +17,7 @@
 
 function choice_callback()
 {
-    return array('foo', 'bar');
+    return ['foo', 'bar'];
 }
 
 class ChoiceValidatorTest extends ConstraintValidatorTestCase
@@ -29,12 +29,12 @@ protected function createValidator()
 
     public static function staticCallback()
     {
-        return array('foo', 'bar');
+        return ['foo', 'bar'];
     }
 
     public function objectMethodCallback()
     {
-        return array('foo', 'bar');
+        return ['foo', 'bar'];
     }
 
     /**
@@ -42,10 +42,10 @@ public function objectMethodCallback()
      */
     public function testExpectArrayIfMultipleIsTrue()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar'],
             'multiple' => true,
-        ));
+        ]);
 
         $this->validator->validate('asdf', $constraint);
     }
@@ -55,9 +55,9 @@ public function testNullIsValid()
         $this->validator->validate(
             null,
             new Choice(
-                array(
-                    'choices' => array('foo', 'bar'),
-                )
+                [
+                    'choices' => ['foo', 'bar'],
+                ]
             )
         );
 
@@ -77,12 +77,12 @@ public function testChoicesOrCallbackExpected()
      */
     public function testValidCallbackExpected()
     {
-        $this->validator->validate('foobar', new Choice(array('callback' => 'abcd')));
+        $this->validator->validate('foobar', new Choice(['callback' => 'abcd']));
     }
 
     public function testValidChoiceArray()
     {
-        $constraint = new Choice(array('choices' => array('foo', 'bar')));
+        $constraint = new Choice(['choices' => ['foo', 'bar']]);
 
         $this->validator->validate('bar', $constraint);
 
@@ -91,7 +91,7 @@ public function testValidChoiceArray()
 
     public function testValidChoiceCallbackFunction()
     {
-        $constraint = new Choice(array('callback' => __NAMESPACE__.'\choice_callback'));
+        $constraint = new Choice(['callback' => __NAMESPACE__.'\choice_callback']);
 
         $this->validator->validate('bar', $constraint);
 
@@ -101,11 +101,11 @@ public function testValidChoiceCallbackFunction()
     public function testValidChoiceCallbackClosure()
     {
         $constraint = new Choice(
-            array(
+            [
                 'callback' => function () {
-                    return array('foo', 'bar');
+                    return ['foo', 'bar'];
                 },
-            )
+            ]
         );
 
         $this->validator->validate('bar', $constraint);
@@ -115,7 +115,7 @@ public function testValidChoiceCallbackClosure()
 
     public function testValidChoiceCallbackStaticMethod()
     {
-        $constraint = new Choice(array('callback' => array(__CLASS__, 'staticCallback')));
+        $constraint = new Choice(['callback' => [__CLASS__, 'staticCallback']]);
 
         $this->validator->validate('bar', $constraint);
 
@@ -127,7 +127,7 @@ public function testValidChoiceCallbackContextMethod()
         // search $this for "staticCallback"
         $this->setObject($this);
 
-        $constraint = new Choice(array('callback' => 'staticCallback'));
+        $constraint = new Choice(['callback' => 'staticCallback']);
 
         $this->validator->validate('bar', $constraint);
 
@@ -139,7 +139,7 @@ public function testValidChoiceCallbackContextObjectMethod()
         // search $this for "objectMethodCallback"
         $this->setObject($this);
 
-        $constraint = new Choice(array('callback' => 'objectMethodCallback'));
+        $constraint = new Choice(['callback' => 'objectMethodCallback']);
 
         $this->validator->validate('bar', $constraint);
 
@@ -148,22 +148,22 @@ public function testValidChoiceCallbackContextObjectMethod()
 
     public function testMultipleChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar', 'baz'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar', 'baz'],
             'multiple' => true,
-        ));
+        ]);
 
-        $this->validator->validate(array('baz', 'bar'), $constraint);
+        $this->validator->validate(['baz', 'bar'], $constraint);
 
         $this->assertNoViolation();
     }
 
     public function testInvalidChoice()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar'],
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('baz', $constraint);
 
@@ -175,12 +175,12 @@ public function testInvalidChoice()
 
     public function testInvalidChoiceEmptyChoices()
     {
-        $constraint = new Choice(array(
+        $constraint = new Choice([
             // May happen when the choices are provided dynamically, e.g. from
             // the DB or the model
-            'choices' => array(),
+            'choices' => [],
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('baz', $constraint);
 
@@ -192,13 +192,13 @@ public function testInvalidChoiceEmptyChoices()
 
     public function testInvalidChoiceMultiple()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar'],
             'multipleMessage' => 'myMessage',
             'multiple' => true,
-        ));
+        ]);
 
-        $this->validator->validate(array('foo', 'baz'), $constraint);
+        $this->validator->validate(['foo', 'baz'], $constraint);
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ value }}', '"baz"')
@@ -209,14 +209,14 @@ public function testInvalidChoiceMultiple()
 
     public function testTooFewChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar', 'moo', 'maa'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar', 'moo', 'maa'],
             'multiple' => true,
             'min' => 2,
             'minMessage' => 'myMessage',
-        ));
+        ]);
 
-        $value = array('foo');
+        $value = ['foo'];
 
         $this->setValue($value);
 
@@ -232,14 +232,14 @@ public function testTooFewChoices()
 
     public function testTooManyChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array('foo', 'bar', 'moo', 'maa'),
+        $constraint = new Choice([
+            'choices' => ['foo', 'bar', 'moo', 'maa'],
             'multiple' => true,
             'max' => 2,
             'maxMessage' => 'myMessage',
-        ));
+        ]);
 
-        $value = array('foo', 'bar', 'moo');
+        $value = ['foo', 'bar', 'moo'];
 
         $this->setValue($value);
 
@@ -255,9 +255,9 @@ public function testTooManyChoices()
 
     public function testStrictAllowsExactValue()
     {
-        $constraint = new Choice(array(
-            'choices' => array(1, 2),
-        ));
+        $constraint = new Choice([
+            'choices' => [1, 2],
+        ]);
 
         $this->validator->validate(2, $constraint);
 
@@ -266,10 +266,10 @@ public function testStrictAllowsExactValue()
 
     public function testStrictDisallowsDifferentType()
     {
-        $constraint = new Choice(array(
-            'choices' => array(1, 2),
+        $constraint = new Choice([
+            'choices' => [1, 2],
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('2', $constraint);
 
@@ -281,13 +281,13 @@ public function testStrictDisallowsDifferentType()
 
     public function testStrictWithMultipleChoices()
     {
-        $constraint = new Choice(array(
-            'choices' => array(1, 2, 3),
+        $constraint = new Choice([
+            'choices' => [1, 2, 3],
             'multiple' => true,
             'multipleMessage' => 'myMessage',
-        ));
+        ]);
 
-        $this->validator->validate(array(2, '3'), $constraint);
+        $this->validator->validate([2, '3'], $constraint);
 
         $this->buildViolation('myMessage')
             ->setParameter('{{ value }}', '"3"')
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php b/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
index 6173b3528428..8a19263e003c 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/EmailTest.php
@@ -22,14 +22,14 @@ class EmailTest extends TestCase
      */
     public function testLegacyConstructorStrict()
     {
-        $subject = new Email(array('strict' => true));
+        $subject = new Email(['strict' => true]);
 
         $this->assertTrue($subject->strict);
     }
 
     public function testConstructorStrict()
     {
-        $subject = new Email(array('mode' => Email::VALIDATION_MODE_STRICT));
+        $subject = new Email(['mode' => Email::VALIDATION_MODE_STRICT]);
 
         $this->assertEquals(Email::VALIDATION_MODE_STRICT, $subject->mode);
     }
@@ -40,6 +40,6 @@ public function testConstructorStrict()
      */
     public function testUnknownModesTriggerException()
     {
-        new Email(array('mode' => 'Unknown Mode'));
+        new Email(['mode' => 'Unknown Mode']);
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
index e8e9cfc0db22..1c06b3329bba 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/EmailValidatorTest.php
@@ -82,16 +82,16 @@ public function testValidEmails($email)
 
     public function getValidEmails()
     {
-        return array(
-            array('fabien@symfony.com'),
-            array('example@example.co.uk'),
-            array('fabien_potencier@example.fr'),
-            array('example@example.co..uk'),
-            array('{}~!@!@£$%%^&*().!@£$%^&*()'),
-            array('example@example.co..uk'),
-            array('example@-example.com'),
-            array(sprintf('example@%s.com', str_repeat('a', 64))),
-        );
+        return [
+            ['fabien@symfony.com'],
+            ['example@example.co.uk'],
+            ['fabien_potencier@example.fr'],
+            ['example@example.co..uk'],
+            ['{}~!@!@£$%%^&*().!@£$%^&*()'],
+            ['example@example.co..uk'],
+            ['example@-example.com'],
+            [sprintf('example@%s.com', str_repeat('a', 64))],
+        ];
     }
 
     /**
@@ -99,19 +99,19 @@ public function getValidEmails()
      */
     public function testValidEmailsHtml5($email)
     {
-        $this->validator->validate($email, new Email(array('mode' => Email::VALIDATION_MODE_HTML5)));
+        $this->validator->validate($email, new Email(['mode' => Email::VALIDATION_MODE_HTML5]));
 
         $this->assertNoViolation();
     }
 
     public function getValidEmailsHtml5()
     {
-        return array(
-            array('fabien@symfony.com'),
-            array('example@example.co.uk'),
-            array('fabien_potencier@example.fr'),
-            array('{}~!@example.com'),
-        );
+        return [
+            ['fabien@symfony.com'],
+            ['example@example.co.uk'],
+            ['fabien_potencier@example.fr'],
+            ['{}~!@example.com'],
+        ];
     }
 
     /**
@@ -119,9 +119,9 @@ public function getValidEmailsHtml5()
      */
     public function testInvalidEmails($email)
     {
-        $constraint = new Email(array(
+        $constraint = new Email([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($email, $constraint);
 
@@ -133,12 +133,12 @@ public function testInvalidEmails($email)
 
     public function getInvalidEmails()
     {
-        return array(
-            array('example'),
-            array('example@'),
-            array('example@localhost'),
-            array('foo@example.com bar'),
-        );
+        return [
+            ['example'],
+            ['example@'],
+            ['example@localhost'],
+            ['foo@example.com bar'],
+        ];
     }
 
     /**
@@ -147,10 +147,10 @@ public function getInvalidEmails()
     public function testInvalidHtml5Emails($email)
     {
         $constraint = new Email(
-            array(
+            [
                 'message' => 'myMessage',
                 'mode' => Email::VALIDATION_MODE_HTML5,
-            )
+            ]
         );
 
         $this->validator->validate($email, $constraint);
@@ -163,29 +163,29 @@ public function testInvalidHtml5Emails($email)
 
     public function getInvalidHtml5Emails()
     {
-        return array(
-            array('example'),
-            array('example@'),
-            array('example@localhost'),
-            array('example@example.co..uk'),
-            array('foo@example.com bar'),
-            array('example@example.'),
-            array('example@.fr'),
-            array('@example.com'),
-            array('example@example.com;example@example.com'),
-            array('example@.'),
-            array(' example@example.com'),
-            array('example@ '),
-            array(' example@example.com '),
-            array(' example @example .com '),
-            array('example@-example.com'),
-            array(sprintf('example@%s.com', str_repeat('a', 64))),
-        );
+        return [
+            ['example'],
+            ['example@'],
+            ['example@localhost'],
+            ['example@example.co..uk'],
+            ['foo@example.com bar'],
+            ['example@example.'],
+            ['example@.fr'],
+            ['@example.com'],
+            ['example@example.com;example@example.com'],
+            ['example@.'],
+            [' example@example.com'],
+            ['example@ '],
+            [' example@example.com '],
+            [' example @example .com '],
+            ['example@-example.com'],
+            [sprintf('example@%s.com', str_repeat('a', 64))],
+        ];
     }
 
     public function testModeStrict()
     {
-        $constraint = new Email(array('mode' => Email::VALIDATION_MODE_STRICT));
+        $constraint = new Email(['mode' => Email::VALIDATION_MODE_STRICT]);
 
         $this->validator->validate('example@localhost', $constraint);
 
@@ -194,7 +194,7 @@ public function testModeStrict()
 
     public function testModeHtml5()
     {
-        $constraint = new Email(array('mode' => Email::VALIDATION_MODE_HTML5));
+        $constraint = new Email(['mode' => Email::VALIDATION_MODE_HTML5]);
 
         $this->validator->validate('example@example..com', $constraint);
 
@@ -206,7 +206,7 @@ public function testModeHtml5()
 
     public function testModeLoose()
     {
-        $constraint = new Email(array('mode' => Email::VALIDATION_MODE_LOOSE));
+        $constraint = new Email(['mode' => Email::VALIDATION_MODE_LOOSE]);
 
         $this->validator->validate('example@example..com', $constraint);
 
@@ -232,7 +232,7 @@ public function testUnknownModesOnValidateTriggerException()
      */
     public function testStrict()
     {
-        $constraint = new Email(array('strict' => true));
+        $constraint = new Email(['strict' => true]);
 
         $this->validator->validate('example@localhost', $constraint);
 
@@ -244,10 +244,10 @@ public function testStrict()
      */
     public function testStrictWithInvalidEmails($email)
     {
-        $constraint = new Email(array(
+        $constraint = new Email([
             'message' => 'myMessage',
             'mode' => Email::VALIDATION_MODE_STRICT,
-        ));
+        ]);
 
         $this->validator->validate($email, $constraint);
 
@@ -263,55 +263,55 @@ public function testStrictWithInvalidEmails($email)
      */
     public function getInvalidEmailsForStrictChecks()
     {
-        return array(
-            array('test@example.com test'),
-            array('user  name@example.com'),
-            array('user   name@example.com'),
-            array('example.@example.co.uk'),
-            array('example@example@example.co.uk'),
-            array('(test_exampel@example.fr)'),
-            array('example(example)example@example.co.uk'),
-            array('.example@localhost'),
-            array('ex\ample@localhost'),
-            array('example@local\host'),
-            array('example@localhost.'),
-            array('user name@example.com'),
-            array('username@ example . com'),
-            array('example@(fake).com'),
-            array('example@(fake.com'),
-            array('username@example,com'),
-            array('usern,ame@example.com'),
-            array('user[na]me@example.com'),
-            array('"""@iana.org'),
-            array('"\"@iana.org'),
-            array('"test"test@iana.org'),
-            array('"test""test"@iana.org'),
-            array('"test"."test"@iana.org'),
-            array('"test".test@iana.org'),
-            array('"test"'.\chr(0).'@iana.org'),
-            array('"test\"@iana.org'),
-            array(\chr(226).'@iana.org'),
-            array('test@'.\chr(226).'.org'),
-            array('\r\ntest@iana.org'),
-            array('\r\n test@iana.org'),
-            array('\r\n \r\ntest@iana.org'),
-            array('\r\n \r\ntest@iana.org'),
-            array('\r\n \r\n test@iana.org'),
-            array('test@iana.org \r\n'),
-            array('test@iana.org \r\n '),
-            array('test@iana.org \r\n \r\n'),
-            array('test@iana.org \r\n\r\n'),
-            array('test@iana.org  \r\n\r\n '),
-            array('test@iana/icann.org'),
-            array('test@foo;bar.com'),
-            array('test;123@foobar.com'),
-            array('test@example..com'),
-            array('email.email@email."'),
-            array('test@email>'),
-            array('test@email<'),
-            array('test@email{'),
-            array(str_repeat('x', 254).'@example.com'), //email with warnings
-        );
+        return [
+            ['test@example.com test'],
+            ['user  name@example.com'],
+            ['user   name@example.com'],
+            ['example.@example.co.uk'],
+            ['example@example@example.co.uk'],
+            ['(test_exampel@example.fr)'],
+            ['example(example)example@example.co.uk'],
+            ['.example@localhost'],
+            ['ex\ample@localhost'],
+            ['example@local\host'],
+            ['example@localhost.'],
+            ['user name@example.com'],
+            ['username@ example . com'],
+            ['example@(fake).com'],
+            ['example@(fake.com'],
+            ['username@example,com'],
+            ['usern,ame@example.com'],
+            ['user[na]me@example.com'],
+            ['"""@iana.org'],
+            ['"\"@iana.org'],
+            ['"test"test@iana.org'],
+            ['"test""test"@iana.org'],
+            ['"test"."test"@iana.org'],
+            ['"test".test@iana.org'],
+            ['"test"'.\chr(0).'@iana.org'],
+            ['"test\"@iana.org'],
+            [\chr(226).'@iana.org'],
+            ['test@'.\chr(226).'.org'],
+            ['\r\ntest@iana.org'],
+            ['\r\n test@iana.org'],
+            ['\r\n \r\ntest@iana.org'],
+            ['\r\n \r\ntest@iana.org'],
+            ['\r\n \r\n test@iana.org'],
+            ['test@iana.org \r\n'],
+            ['test@iana.org \r\n '],
+            ['test@iana.org \r\n \r\n'],
+            ['test@iana.org \r\n\r\n'],
+            ['test@iana.org  \r\n\r\n '],
+            ['test@iana/icann.org'],
+            ['test@foo;bar.com'],
+            ['test;123@foobar.com'],
+            ['test@example..com'],
+            ['email.email@email."'],
+            ['test@email>'],
+            ['test@email<'],
+            ['test@email{'],
+            [str_repeat('x', 254).'@example.com'], //email with warnings
+        ];
     }
 
     /**
@@ -320,12 +320,12 @@ public function getInvalidEmailsForStrictChecks()
      */
     public function testDnsChecks($type, $violation)
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => $violation ? false : $type))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => $violation ? false : $type]]]);
 
-        $constraint = new Email(array(
+        $constraint = new Email([
             'message' => 'myMessage',
             'MX' === $type ? 'checkMX' : 'checkHost' => true,
-        ));
+        ]);
 
         $this->validator->validate('foo@example.com', $constraint);
 
@@ -341,14 +341,14 @@ public function testDnsChecks($type, $violation)
 
     public function getDnsChecks()
     {
-        return array(
-            array('MX', false),
-            array('MX', Email::MX_CHECK_FAILED_ERROR),
-            array('A', false),
-            array('A', Email::HOST_CHECK_FAILED_ERROR),
-            array('AAAA', false),
-            array('AAAA', Email::HOST_CHECK_FAILED_ERROR),
-        );
+        return [
+            ['MX', false],
+            ['MX', Email::MX_CHECK_FAILED_ERROR],
+            ['A', false],
+            ['A', Email::HOST_CHECK_FAILED_ERROR],
+            ['AAAA', false],
+            ['AAAA', Email::HOST_CHECK_FAILED_ERROR],
+        ];
     }
 
     /**
@@ -356,11 +356,11 @@ public function getDnsChecks()
      */
     public function testHostnameIsProperlyParsed()
     {
-        DnsMock::withMockedHosts(array('baz.com' => array(array('type' => 'MX'))));
+        DnsMock::withMockedHosts(['baz.com' => [['type' => 'MX']]]);
 
         $this->validator->validate(
             '"foo@bar"@baz.com',
-            new Email(array('checkMX' => true))
+            new Email(['checkMX' => true])
         );
 
         $this->assertNoViolation();
@@ -373,10 +373,10 @@ public function testEmptyHostIsNotValid($checkType, $violation)
     {
         $this->validator->validate(
             'foo@bar.fr@',
-            new Email(array(
+            new Email([
                 'message' => 'myMessage',
                 $checkType => true,
-            ))
+            ])
         );
 
         $this
@@ -388,9 +388,9 @@ public function testEmptyHostIsNotValid($checkType, $violation)
 
     public function provideCheckTypes()
     {
-        return array(
-            array('checkMX', Email::MX_CHECK_FAILED_ERROR),
-            array('checkHost', Email::HOST_CHECK_FAILED_ERROR),
-        );
+        return [
+            ['checkMX', Email::MX_CHECK_FAILED_ERROR],
+            ['checkHost', Email::HOST_CHECK_FAILED_ERROR],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/ExpressionValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/ExpressionValidatorTest.php
index 1d7ecd936f18..a61d6d675eef 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/ExpressionValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/ExpressionValidatorTest.php
@@ -273,12 +273,12 @@ public function testExpressionLanguageUsage()
 
     public function testPassingCustomValues()
     {
-        $constraint = new Expression(array(
+        $constraint = new Expression([
             'expression' => 'value + custom == 2',
-            'values' => array(
+            'values' => [
                 'custom' => 1,
-            ),
-        ));
+            ],
+        ]);
 
         $this->validator->validate(1, $constraint);
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
index b9f23db8a886..a4de6e73d255 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php
@@ -37,7 +37,7 @@ public function testLegacyNullIsValid()
 
     public function testNullIsValid()
     {
-        $this->validator->validate(null, new Locale(array('canonicalize' => true)));
+        $this->validator->validate(null, new Locale(['canonicalize' => true]));
 
         $this->assertNoViolation();
     }
@@ -57,7 +57,7 @@ public function testLegacyEmptyStringIsValid()
 
     public function testEmptyStringIsValid()
     {
-        $this->validator->validate('', new Locale(array('canonicalize' => true)));
+        $this->validator->validate('', new Locale(['canonicalize' => true]));
 
         $this->assertNoViolation();
     }
@@ -77,7 +77,7 @@ public function testLegacyExpectsStringCompatibleType()
      */
     public function testExpectsStringCompatibleType()
     {
-        $this->validator->validate(new \stdClass(), new Locale(array('canonicalize' => true)));
+        $this->validator->validate(new \stdClass(), new Locale(['canonicalize' => true]));
     }
 
     /**
@@ -105,14 +105,14 @@ public function testValidLocales($locale, array $options)
 
     public function getValidLocales()
     {
-        return array(
-            array('en', array('canonicalize' => true)),
-            array('en_US', array('canonicalize' => true)),
-            array('pt', array('canonicalize' => true)),
-            array('pt_PT', array('canonicalize' => true)),
-            array('zh_Hans', array('canonicalize' => true)),
-            array('fil_PH', array('canonicalize' => true)),
-        );
+        return [
+            ['en', ['canonicalize' => true]],
+            ['en_US', ['canonicalize' => true]],
+            ['pt', ['canonicalize' => true]],
+            ['pt_PT', ['canonicalize' => true]],
+            ['zh_Hans', ['canonicalize' => true]],
+            ['fil_PH', ['canonicalize' => true]],
+        ];
     }
 
     /**
@@ -122,9 +122,9 @@ public function getValidLocales()
      */
     public function testLegacyInvalidLocales(string $locale)
     {
-        $constraint = new Locale(array(
+        $constraint = new Locale([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($locale, $constraint);
 
@@ -136,10 +136,10 @@ public function testLegacyInvalidLocales(string $locale)
 
     public function getLegacyInvalidLocales()
     {
-        return array(
-            array('EN'),
-            array('foobar'),
-        );
+        return [
+            ['EN'],
+            ['foobar'],
+        ];
     }
 
     /**
@@ -147,10 +147,10 @@ public function getLegacyInvalidLocales()
      */
     public function testInvalidLocales($locale)
     {
-        $constraint = new Locale(array(
+        $constraint = new Locale([
             'message' => 'myMessage',
             'canonicalize' => true,
-        ));
+        ]);
 
         $this->validator->validate($locale, $constraint);
 
@@ -162,10 +162,10 @@ public function testInvalidLocales($locale)
 
     public function getInvalidLocales()
     {
-        return array(
-            array('baz'),
-            array('foobar'),
-        );
+        return [
+            ['baz'],
+            ['foobar'],
+        ];
     }
 
     /**
@@ -175,9 +175,9 @@ public function getInvalidLocales()
      */
     public function testInvalidLocalesWithoutCanonicalization(string $locale)
     {
-        $constraint = new Locale(array(
+        $constraint = new Locale([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($locale, $constraint);
 
@@ -192,10 +192,10 @@ public function testInvalidLocalesWithoutCanonicalization(string $locale)
      */
     public function testValidLocalesWithCanonicalization(string $locale)
     {
-        $constraint = new Locale(array(
+        $constraint = new Locale([
             'message' => 'myMessage',
             'canonicalize' => true,
-        ));
+        ]);
 
         $this->validator->validate($locale, $constraint);
 
@@ -204,10 +204,10 @@ public function testValidLocalesWithCanonicalization(string $locale)
 
     public function getUncanonicalizedLocales(): iterable
     {
-        return array(
-            array('en-US'),
-            array('es-AR'),
-            array('fr_FR.utf8'),
-        );
+        return [
+            ['en-US'],
+            ['es-AR'],
+            ['fr_FR.utf8'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
index 5e7c81e92a6e..b0f2cd4dbf87 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
@@ -71,9 +71,9 @@ public function testValidUrls($url)
      */
     public function testValidRelativeUrl($url)
     {
-        $constraint = new Url(array(
+        $constraint = new Url([
             'relativeProtocol' => true,
-        ));
+        ]);
 
         $this->validator->validate($url, $constraint);
 
@@ -82,76 +82,76 @@ public function testValidRelativeUrl($url)
 
     public function getValidRelativeUrls()
     {
-        return array(
-            array('//google.com'),
-            array('//symfony.fake/blog/'),
-            array('//symfony.com/search?type=&q=url+validator'),
-        );
+        return [
+            ['//google.com'],
+            ['//symfony.fake/blog/'],
+            ['//symfony.com/search?type=&q=url+validator'],
+        ];
     }
 
     public function getValidUrls()
     {
-        return array(
-            array('http://a.pl'),
-            array('http://www.google.com'),
-            array('http://www.google.com.'),
-            array('http://www.google.museum'),
-            array('https://google.com/'),
-            array('https://google.com:80/'),
-            array('http://www.example.coop/'),
-            array('http://www.test-example.com/'),
-            array('http://www.symfony.com/'),
-            array('http://symfony.fake/blog/'),
-            array('http://symfony.com/?'),
-            array('http://symfony.com/search?type=&q=url+validator'),
-            array('http://symfony.com/#'),
-            array('http://symfony.com/#?'),
-            array('http://www.symfony.com/doc/current/book/validation.html#supported-constraints'),
-            array('http://very.long.domain.name.com/'),
-            array('http://localhost/'),
-            array('http://myhost123/'),
-            array('http://127.0.0.1/'),
-            array('http://127.0.0.1:80/'),
-            array('http://[::1]/'),
-            array('http://[::1]:80/'),
-            array('http://[1:2:3::4:5:6:7]/'),
-            array('http://sãopaulo.com/'),
-            array('http://xn--sopaulo-xwa.com/'),
-            array('http://sãopaulo.com.br/'),
-            array('http://xn--sopaulo-xwa.com.br/'),
-            array('http://пример.испытание/'),
-            array('http://xn--e1afmkfd.xn--80akhbyknj4f/'),
-            array('http://مثال.إختبار/'),
-            array('http://xn--mgbh0fb.xn--kgbechtv/'),
-            array('http://例子.测试/'),
-            array('http://xn--fsqu00a.xn--0zwm56d/'),
-            array('http://例子.測試/'),
-            array('http://xn--fsqu00a.xn--g6w251d/'),
-            array('http://例え.テスト/'),
-            array('http://xn--r8jz45g.xn--zckzah/'),
-            array('http://مثال.آزمایشی/'),
-            array('http://xn--mgbh0fb.xn--hgbk6aj7f53bba/'),
-            array('http://실례.테스트/'),
-            array('http://xn--9n2bp8q.xn--9t4b11yi5a/'),
-            array('http://العربية.idn.icann.org/'),
-            array('http://xn--ogb.idn.icann.org/'),
-            array('http://xn--e1afmkfd.xn--80akhbyknj4f.xn--e1afmkfd/'),
-            array('http://xn--espaa-rta.xn--ca-ol-fsay5a/'),
-            array('http://xn--d1abbgf6aiiy.xn--p1ai/'),
-            array('http://☎.com/'),
-            array('http://username:password@symfony.com'),
-            array('http://user.name:password@symfony.com'),
-            array('http://username:pass.word@symfony.com'),
-            array('http://user.name:pass.word@symfony.com'),
-            array('http://user-name@symfony.com'),
-            array('http://symfony.com?'),
-            array('http://symfony.com?query=1'),
-            array('http://symfony.com/?query=1'),
-            array('http://symfony.com#'),
-            array('http://symfony.com#fragment'),
-            array('http://symfony.com/#fragment'),
-            array('http://symfony.com/#one_more%20test'),
-        );
+        return [
+            ['http://a.pl'],
+            ['http://www.google.com'],
+            ['http://www.google.com.'],
+            ['http://www.google.museum'],
+            ['https://google.com/'],
+            ['https://google.com:80/'],
+            ['http://www.example.coop/'],
+            ['http://www.test-example.com/'],
+            ['http://www.symfony.com/'],
+            ['http://symfony.fake/blog/'],
+            ['http://symfony.com/?'],
+            ['http://symfony.com/search?type=&q=url+validator'],
+            ['http://symfony.com/#'],
+            ['http://symfony.com/#?'],
+            ['http://www.symfony.com/doc/current/book/validation.html#supported-constraints'],
+            ['http://very.long.domain.name.com/'],
+            ['http://localhost/'],
+            ['http://myhost123/'],
+            ['http://127.0.0.1/'],
+            ['http://127.0.0.1:80/'],
+            ['http://[::1]/'],
+            ['http://[::1]:80/'],
+            ['http://[1:2:3::4:5:6:7]/'],
+            ['http://sãopaulo.com/'],
+            ['http://xn--sopaulo-xwa.com/'],
+            ['http://sãopaulo.com.br/'],
+            ['http://xn--sopaulo-xwa.com.br/'],
+            ['http://пример.испытание/'],
+            ['http://xn--e1afmkfd.xn--80akhbyknj4f/'],
+            ['http://مثال.إختبار/'],
+            ['http://xn--mgbh0fb.xn--kgbechtv/'],
+            ['http://例子.测试/'],
+            ['http://xn--fsqu00a.xn--0zwm56d/'],
+            ['http://例子.測試/'],
+            ['http://xn--fsqu00a.xn--g6w251d/'],
+            ['http://例え.テスト/'],
+            ['http://xn--r8jz45g.xn--zckzah/'],
+            ['http://مثال.آزمایشی/'],
+            ['http://xn--mgbh0fb.xn--hgbk6aj7f53bba/'],
+            ['http://실례.테스트/'],
+            ['http://xn--9n2bp8q.xn--9t4b11yi5a/'],
+            ['http://العربية.idn.icann.org/'],
+            ['http://xn--ogb.idn.icann.org/'],
+            ['http://xn--e1afmkfd.xn--80akhbyknj4f.xn--e1afmkfd/'],
+            ['http://xn--espaa-rta.xn--ca-ol-fsay5a/'],
+            ['http://xn--d1abbgf6aiiy.xn--p1ai/'],
+            ['http://☎.com/'],
+            ['http://username:password@symfony.com'],
+            ['http://user.name:password@symfony.com'],
+            ['http://username:pass.word@symfony.com'],
+            ['http://user.name:pass.word@symfony.com'],
+            ['http://user-name@symfony.com'],
+            ['http://symfony.com?'],
+            ['http://symfony.com?query=1'],
+            ['http://symfony.com/?query=1'],
+            ['http://symfony.com#'],
+            ['http://symfony.com#fragment'],
+            ['http://symfony.com/#fragment'],
+            ['http://symfony.com/#one_more%20test'],
+        ];
     }
 
     /**
@@ -159,9 +159,9 @@ public function getValidUrls()
      */
     public function testInvalidUrls($url)
     {
-        $constraint = new Url(array(
+        $constraint = new Url([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($url, $constraint);
 
@@ -177,10 +177,10 @@ public function testInvalidUrls($url)
      */
     public function testInvalidRelativeUrl($url)
     {
-        $constraint = new Url(array(
+        $constraint = new Url([
             'message' => 'myMessage',
             'relativeProtocol' => true,
-        ));
+        ]);
 
         $this->validator->validate($url, $constraint);
 
@@ -192,50 +192,50 @@ public function testInvalidRelativeUrl($url)
 
     public function getInvalidRelativeUrls()
     {
-        return array(
-            array('/google.com'),
-            array('//goog_le.com'),
-            array('//google.com::aa'),
-            array('//google.com:aa'),
-            array('//127.0.0.1:aa/'),
-            array('//[::1'),
-            array('//hello.☎/'),
-            array('//:password@symfony.com'),
-            array('//:password@@symfony.com'),
-            array('//username:passwordsymfony.com'),
-            array('//usern@me:password@symfony.com'),
-            array('//example.com/exploit.html?<script>alert(1);</script>'),
-            array('//example.com/exploit.html?hel lo'),
-            array('//example.com/exploit.html?not_a%hex'),
-            array('//'),
-        );
+        return [
+            ['/google.com'],
+            ['//goog_le.com'],
+            ['//google.com::aa'],
+            ['//google.com:aa'],
+            ['//127.0.0.1:aa/'],
+            ['//[::1'],
+            ['//hello.☎/'],
+            ['//:password@symfony.com'],
+            ['//:password@@symfony.com'],
+            ['//username:passwordsymfony.com'],
+            ['//usern@me:password@symfony.com'],
+            ['//example.com/exploit.html?<script>alert(1);</script>'],
+            ['//example.com/exploit.html?hel lo'],
+            ['//example.com/exploit.html?not_a%hex'],
+            ['//'],
+        ];
     }
 
     public function getInvalidUrls()
     {
-        return array(
-            array('google.com'),
-            array('://google.com'),
-            array('http ://google.com'),
-            array('http:/google.com'),
-            array('http://goog_le.com'),
-            array('http://google.com::aa'),
-            array('http://google.com:aa'),
-            array('ftp://google.fr'),
-            array('faked://google.fr'),
-            array('http://127.0.0.1:aa/'),
-            array('ftp://[::1]/'),
-            array('http://[::1'),
-            array('http://hello.☎/'),
-            array('http://:password@symfony.com'),
-            array('http://:password@@symfony.com'),
-            array('http://username:passwordsymfony.com'),
-            array('http://usern@me:password@symfony.com'),
-            array('http://example.com/exploit.html?<script>alert(1);</script>'),
-            array('http://example.com/exploit.html?hel lo'),
-            array('http://example.com/exploit.html?not_a%hex'),
-            array('http://'),
-        );
+        return [
+            ['google.com'],
+            ['://google.com'],
+            ['http ://google.com'],
+            ['http:/google.com'],
+            ['http://goog_le.com'],
+            ['http://google.com::aa'],
+            ['http://google.com:aa'],
+            ['ftp://google.fr'],
+            ['faked://google.fr'],
+            ['http://127.0.0.1:aa/'],
+            ['ftp://[::1]/'],
+            ['http://[::1'],
+            ['http://hello.☎/'],
+            ['http://:password@symfony.com'],
+            ['http://:password@@symfony.com'],
+            ['http://username:passwordsymfony.com'],
+            ['http://usern@me:password@symfony.com'],
+            ['http://example.com/exploit.html?<script>alert(1);</script>'],
+            ['http://example.com/exploit.html?hel lo'],
+            ['http://example.com/exploit.html?not_a%hex'],
+            ['http://'],
+        ];
     }
 
     /**
@@ -243,9 +243,9 @@ public function getInvalidUrls()
      */
     public function testCustomProtocolIsValid($url)
     {
-        $constraint = new Url(array(
-            'protocols' => array('ftp', 'file', 'git'),
-        ));
+        $constraint = new Url([
+            'protocols' => ['ftp', 'file', 'git'],
+        ]);
 
         $this->validator->validate($url, $constraint);
 
@@ -254,11 +254,11 @@ public function testCustomProtocolIsValid($url)
 
     public function getValidCustomUrls()
     {
-        return array(
-            array('ftp://google.com'),
-            array('file://127.0.0.1'),
-            array('git://[::1]/'),
-        );
+        return [
+            ['ftp://google.com'],
+            ['file://127.0.0.1'],
+            ['git://[::1]/'],
+        ];
     }
 
     /**
@@ -269,12 +269,12 @@ public function getValidCustomUrls()
      */
     public function testCheckDns($violation)
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => $violation ? '' : 'A'))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => $violation ? '' : 'A']]]);
 
-        $constraint = new Url(array(
+        $constraint = new Url([
             'checkDNS' => 'ANY',
             'dnsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('http://example.com', $constraint);
 
@@ -290,7 +290,7 @@ public function testCheckDns($violation)
 
     public function getCheckDns()
     {
-        return array(array(true), array(false));
+        return [[true], [false]];
     }
 
     /**
@@ -301,12 +301,12 @@ public function getCheckDns()
      */
     public function testCheckDnsByType($type)
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => $type))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => $type]]]);
 
-        $constraint = new Url(array(
+        $constraint = new Url([
             'checkDNS' => $type,
             'dnsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('http://example.com', $constraint);
 
@@ -315,20 +315,20 @@ public function testCheckDnsByType($type)
 
     public function getCheckDnsTypes()
     {
-        return array(
-            array('ANY'),
-            array('A'),
-            array('A6'),
-            array('AAAA'),
-            array('CNAME'),
-            array('MX'),
-            array('NAPTR'),
-            array('NS'),
-            array('PTR'),
-            array('SOA'),
-            array('SRV'),
-            array('TXT'),
-        );
+        return [
+            ['ANY'],
+            ['A'],
+            ['A6'],
+            ['AAAA'],
+            ['CNAME'],
+            ['MX'],
+            ['NAPTR'],
+            ['NS'],
+            ['PTR'],
+            ['SOA'],
+            ['SRV'],
+            ['TXT'],
+        ];
     }
 
     /**
@@ -340,12 +340,12 @@ public function getCheckDnsTypes()
      */
     public function testCheckDnsWithInvalidType()
     {
-        DnsMock::withMockedHosts(array('example.com' => array(array('type' => 'A'))));
+        DnsMock::withMockedHosts(['example.com' => [['type' => 'A']]]);
 
-        $constraint = new Url(array(
+        $constraint = new Url([
             'checkDNS' => 'BOGUS',
             'dnsMessage' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate('http://example.com', $constraint);
     }
@@ -356,9 +356,9 @@ public function testCheckDnsWithInvalidType()
      */
     public function testCheckDnsOptionIsDeprecated()
     {
-        $constraint = new Url(array(
+        $constraint = new Url([
             'checkDNS' => Url::CHECK_DNS_TYPE_NONE,
-        ));
+        ]);
 
         $this->validator->validate('http://example.com', $constraint);
     }
diff --git a/src/Symfony/Component/VarDumper/Caster/DateCaster.php b/src/Symfony/Component/VarDumper/Caster/DateCaster.php
index da6a5a70d688..29c123d6ee5e 100644
--- a/src/Symfony/Component/VarDumper/Caster/DateCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/DateCaster.php
@@ -33,7 +33,7 @@ public static function castDateTime(\DateTimeInterface $d, array $a, Stub $stub,
             .($location ? ($d->format('I') ? "\nDST On" : "\nDST Off") : '')
         ;
 
-        $a = array();
+        $a = [];
         $a[$prefix.'date'] = new ConstStub(self::formatDateTime($d, $location ? ' e (P)' : ' P'), $title);
 
         $stub->class .= $d->format(' @U');
@@ -47,7 +47,7 @@ public static function castInterval(\DateInterval $interval, array $a, Stub $stu
         $numberOfSeconds = $now->add($interval)->getTimestamp() - $now->getTimestamp();
         $title = number_format($numberOfSeconds, 0, '.', ' ').'s';
 
-        $i = array(Caster::PREFIX_VIRTUAL.'interval' => new ConstStub(self::formatInterval($interval), $title));
+        $i = [Caster::PREFIX_VIRTUAL.'interval' => new ConstStub(self::formatInterval($interval), $title)];
 
         return $filter & Caster::EXCLUDE_VERBOSE ? $i : $i + $a;
     }
@@ -75,14 +75,14 @@ public static function castTimeZone(\DateTimeZone $timeZone, array $a, Stub $stu
         $formatted = (new \DateTime('now', $timeZone))->format($location ? 'e (P)' : 'P');
         $title = $location && \extension_loaded('intl') ? \Locale::getDisplayRegion('-'.$location['country_code']) : '';
 
-        $z = array(Caster::PREFIX_VIRTUAL.'timezone' => new ConstStub($formatted, $title));
+        $z = [Caster::PREFIX_VIRTUAL.'timezone' => new ConstStub($formatted, $title)];
 
         return $filter & Caster::EXCLUDE_VERBOSE ? $z : $z + $a;
     }
 
     public static function castPeriod(\DatePeriod $p, array $a, Stub $stub, $isNested, $filter)
     {
-        $dates = array();
+        $dates = [];
         if (\PHP_VERSION_ID >= 70107) { // see https://bugs.php.net/bug.php?id=74639
             foreach (clone $p as $i => $d) {
                 if (self::PERIOD_LIMIT === $i) {
@@ -105,7 +105,7 @@ public static function castPeriod(\DatePeriod $p, array $a, Stub $stub, $isNeste
             ($end = $p->getEndDate()) ? 'to '.self::formatDateTime($end) : 'recurring '.$p->recurrences.' time/s'
         );
 
-        $p = array(Caster::PREFIX_VIRTUAL.'period' => new ConstStub($period, implode("\n", $dates)));
+        $p = [Caster::PREFIX_VIRTUAL.'period' => new ConstStub($period, implode("\n", $dates))];
 
         return $filter & Caster::EXCLUDE_VERBOSE ? $p : $p + $a;
     }
diff --git a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
index 15429058267f..d155f77c1076 100644
--- a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
@@ -20,7 +20,7 @@
  */
 class ReflectionCaster
 {
-    private static $extraMap = array(
+    private static $extraMap = [
         'docComment' => 'getDocComment',
         'extension' => 'getExtensionName',
         'isDisabled' => 'isDisabled',
@@ -29,7 +29,7 @@ class ReflectionCaster
         'isUserDefined' => 'isUserDefined',
         'isGenerator' => 'isGenerator',
         'isVariadic' => 'isVariadic',
-    );
+    ];
 
     public static function castClosure(\Closure $c, array $a, Stub $stub, $isNested, $filter = 0)
     {
@@ -46,8 +46,8 @@ public static function castClosure(\Closure $c, array $a, Stub $stub, $isNested,
         if (isset($a[$prefix.'parameters'])) {
             foreach ($a[$prefix.'parameters']->value as &$v) {
                 $param = $v;
-                $v = new EnumStub(array());
-                foreach (static::castParameter($param, array(), $stub, true) as $k => $param) {
+                $v = new EnumStub([]);
+                foreach (static::castParameter($param, [], $stub, true) as $k => $param) {
                     if ("\0" === $k[0]) {
                         $v->value[substr($k, 3)] = $param;
                     }
@@ -89,11 +89,11 @@ public static function castType(\ReflectionType $c, array $a, Stub $stub, $isNes
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        $a += array(
+        $a += [
             $prefix.'name' => $c->getName(),
             $prefix.'allowsNull' => $c->allowsNull(),
             $prefix.'isBuiltin' => $c->isBuiltin(),
-        );
+        ];
 
         return $a;
     }
@@ -106,28 +106,28 @@ public static function castReflectionGenerator(\ReflectionGenerator $c, array $a
             $a[$prefix.'this'] = new CutStub($c->getThis());
         }
         $function = $c->getFunction();
-        $frame = array(
+        $frame = [
             'class' => isset($function->class) ? $function->class : null,
             'type' => isset($function->class) ? ($function->isStatic() ? '::' : '->') : null,
             'function' => $function->name,
             'file' => $c->getExecutingFile(),
             'line' => $c->getExecutingLine(),
-        );
+        ];
         if ($trace = $c->getTrace(DEBUG_BACKTRACE_IGNORE_ARGS)) {
             $function = new \ReflectionGenerator($c->getExecutingGenerator());
-            array_unsh
10000
ift($trace, array(
+            array_unshift($trace, [
                 'function' => 'yield',
                 'file' => $function->getExecutingFile(),
                 'line' => $function->getExecutingLine() - 1,
-            ));
+            ]);
             $trace[] = $frame;
             $a[$prefix.'trace'] = new TraceStub($trace, false, 0, -1, -1);
         } else {
             $function = new FrameStub($frame, false, true);
-            $function = ExceptionCaster::castFrameStub($function, array(), $function, true);
-            $a[$prefix.'executing'] = new EnumStub(array(
+            $function = ExceptionCaster::castFrameStub($function, [], $function, true);
+            $a[$prefix.'executing'] = new EnumStub([
                 "\0~separator= \0".$frame['class'].$frame['type'].$frame['function'].'()' => $function[$prefix.'src'],
-            ));
+            ]);
         }
 
         $a[Caster::PREFIX_VIRTUAL.'closed'] = false;
@@ -143,11 +143,11 @@ public static function castClass(\ReflectionClass $c, array $a, Stub $stub, $isN
             $a[$prefix.'modifiers'] = implode(' ', $n);
         }
 
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'extends' => 'getParentClass',
             'implements' => 'getInterfaceNames',
             'constants' => 'getConstants',
-        ));
+        ]);
 
         foreach ($c->getProperties() as $n) {
             $a[$prefix.'properties'][$n->name] = $n;
@@ -168,17 +168,17 @@ public static function castFunctionAbstract(\ReflectionFunctionAbstract $c, arra
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'returnsReference' => 'returnsReference',
             'returnType' => 'getReturnType',
             'class' => 'getClosureScopeClass',
             'this' => 'getClosureThis',
-        ));
+        ]);
 
         if (isset($a[$prefix.'returnType'])) {
             $v = $a[$prefix.'returnType'];
             $v = $v->getName();
-            $a[$prefix.'returnType'] = new ClassStub($a[$prefix.'returnType']->allowsNull() ? '?'.$v : $v, array(class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', ''));
+            $a[$prefix.'returnType'] = new ClassStub($a[$prefix.'returnType']->allowsNull() ? '?'.$v : $v, [class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', '']);
         }
         if (isset($a[$prefix.'class'])) {
             $a[$prefix.'class'] = new ClassStub($a[$prefix.'class']);
@@ -231,12 +231,12 @@ public static function castParameter(\ReflectionParameter $c, array $a, Stub $st
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'position' => 'getPosition',
             'isVariadic' => 'isVariadic',
             'byReference' => 'isPassedByReference',
             'allowsNull' => 'allowsNull',
-        ));
+        ]);
 
         if ($v = $c->getType()) {
             $a[$prefix.'typeHint'] = $v->getName();
@@ -244,7 +244,7 @@ public static function castParameter(\ReflectionParameter $c, array $a, Stub $st
 
         if (isset($a[$prefix.'typeHint'])) {
             $v = $a[$prefix.'typeHint'];
-            $a[$prefix.'typeHint'] = new ClassStub($v, array(class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', ''));
+            $a[$prefix.'typeHint'] = new ClassStub($v, [class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', '']);
         } else {
             unset($a[$prefix.'allowsNull']);
         }
@@ -273,7 +273,7 @@ public static function castProperty(\ReflectionProperty $c, array $a, Stub $stub
 
     public static function castExtension(\ReflectionExtension $c, array $a, Stub $stub, $isNested)
     {
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'version' => 'getVersion',
             'dependencies' => 'getDependencies',
             'iniEntries' => 'getIniEntries',
@@ -282,26 +282,26 @@ public static function castExtension(\ReflectionExtension $c, array $a, Stub $st
             'constants' => 'getConstants',
             'functions' => 'getFunctions',
             'classes' => 'getClasses',
-        ));
+        ]);
 
         return $a;
     }
 
     public static function castZendExtension(\ReflectionZendExtension $c, array $a, Stub $stub, $isNested)
     {
-        self::addMap($a, $c, array(
+        self::addMap($a, $c, [
             'version' => 'getVersion',
             'author' => 'getAuthor',
             'copyright' => 'getCopyright',
             'url' => 'getURL',
-        ));
+        ]);
 
         return $a;
     }
 
     private static function addExtra(&$a, \Reflector $c)
     {
-        $x = isset($a[Caster::PREFIX_VIRTUAL.'extra']) ? $a[Caster::PREFIX_VIRTUAL.'extra']->value : array();
+        $x = isset($a[Caster::PREFIX_VIRTUAL.'extra']) ? $a[Caster::PREFIX_VIRTUAL.'extra']->value : [];
 
         if (method_exists($c, 'getFileName') && $m = $c->getFileName()) {
             $x['file'] = new LinkStub($m, $c->getStartLine());
diff --git a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
index 1c698b9deed7..4789c1b62242 100644
--- a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
+++ b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
@@ -21,123 +21,123 @@
  */
 abstract class AbstractCloner implements ClonerInterface
 {
-    public static $defaultCasters = array(
-        '__PHP_Incomplete_Class' => array('Symfony\Component\VarDumper\Caster\Caster', 'castPhpIncompleteClass'),
-
-        'Symfony\Component\VarDumper\Caster\CutStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'),
-        'Symfony\Component\VarDumper\Caster\CutArrayStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castCutArray'),
-        'Symfony\Component\VarDumper\Caster\ConstStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'),
-        'Symfony\Component\VarDumper\Caster\EnumStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castEnum'),
-
-        'Closure' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClosure'),
-        'Generator' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castGenerator'),
-        'ReflectionType' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castType'),
-        'ReflectionGenerator' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castReflectionGenerator'),
-        'ReflectionClass' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClass'),
-        'ReflectionFunctionAbstract' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castFunctionAbstract'),
-        'ReflectionMethod' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castMethod'),
-        'ReflectionParameter' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castParameter'),
-        'ReflectionProperty' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castProperty'),
-        'ReflectionExtension' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castExtension'),
-        'ReflectionZendExtension' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castZendExtension'),
-
-        'Doctrine\Common\Persistence\ObjectManager' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Doctrine\Common\Proxy\Proxy' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castCommonProxy'),
-        'Doctrine\ORM\Proxy\Proxy' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castOrmProxy'),
-        'Doctrine\ORM\PersistentCollection' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castPersistentCollection'),
-
-        'DOMException' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castException'),
-        'DOMStringList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNameList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMImplementation' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castImplementation'),
-        'DOMImplementationList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNode' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNode'),
-        'DOMNameSpaceNode' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNameSpaceNode'),
-        'DOMDocument' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocument'),
-        'DOMNodeList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNamedNodeMap' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMCharacterData' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castCharacterData'),
-        'DOMAttr' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castAttr'),
-        'DOMElement' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castElement'),
-        'DOMText' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castText'),
-        'DOMTypeinfo' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castTypeinfo'),
-        'DOMDomError' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDomError'),
-        'DOMLocator' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLocator'),
-        'DOMDocumentType' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocumentType'),
-        'DOMNotation' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNotation'),
-        'DOMEntity' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castEntity'),
-        'DOMProcessingInstruction' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castProcessingInstruction'),
-        'DOMXPath' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castXPath'),
-
-        'XmlReader' => array('Symfony\Component\VarDumper\Caster\XmlReaderCaster', 'castXmlReader'),
-
-        'ErrorException' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castErrorException'),
-        'Exception' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castException'),
-        'Error' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castError'),
-        'Symfony\Component\DependencyInjection\ContainerInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Symfony\Component\HttpFoundation\Request' => array('Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castRequest'),
-        'Symfony\Component\VarDumper\Exception\ThrowingCasterException' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castThrowingCasterException'),
-        'Symfony\Component\VarDumper\Caster\TraceStub' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castTraceStub'),
-        'Symfony\Component\VarDumper\Caster\FrameStub' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castFrameStub'),
-        'Symfony\Component\Debug\Exception\SilencedErrorContext' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castSilencedErrorContext'),
-
-        'PHPUnit_Framework_MockObject_MockObject' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Prophecy\Prophecy\ProphecySubjectInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Mockery\MockInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-
-        'PDO' => array('Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdo'),
-        'PDOStatement' => array('Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdoStatement'),
-
-        'AMQPConnection' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castConnection'),
-        'AMQPChannel' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castChannel'),
-        'AMQPQueue' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castQueue'),
-        'AMQPExchange' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castExchange'),
-        'AMQPEnvelope' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castEnvelope'),
-
-        'ArrayObject' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayObject'),
-        'ArrayIterator' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayIterator'),
-        'SplDoublyLinkedList' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castDoublyLinkedList'),
-        'SplFileInfo' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFileInfo'),
-        'SplFileObject' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFileObject'),
-        'SplFixedArray' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFixedArray'),
-        'SplHeap' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'),
-        'SplObjectStorage' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castObjectStorage'),
-        'SplPriorityQueue' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'),
-        'OuterIterator' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castOuterIterator'),
-
-        'Redis' => array('Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedis'),
-        'RedisArray' => array('Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisArray'),
-
-        'DateTimeInterface' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castDateTime'),
-        'DateInterval' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castInterval'),
-        'DateTimeZone' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castTimeZone'),
-        'DatePeriod' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castPeriod'),
-
-        'GMP' => array('Symfony\Component\VarDumper\Caster\GmpCaster', 'castGmp'),
-
-        ':curl' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castCurl'),
-        ':dba' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'),
-        ':dba persistent' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'),
-        ':gd' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castGd'),
-        ':mysql link' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castMysqlLink'),
-        ':pgsql large object' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLargeObject'),
-        ':pgsql link' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'),
-        ':pgsql link persistent' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'),
-        ':pgsql result' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castResult'),
-        ':process' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castProcess'),
-        ':stream' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'),
-        ':persistent stream' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'),
-        ':stream-context' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStreamContext'),
-        ':xml' => array('Symfony\Component\VarDumper\Caster\XmlResourceCaster', 'castXml'),
-    );
+    public static $defaultCasters = [
+        '__PHP_Incomplete_Class' => ['Symfony\Component\VarDumper\Caster\Caster', 'castPhpIncompleteClass'],
+
+        'Symfony\Component\VarDumper\Caster\CutStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'],
+        'Symfony\Component\VarDumper\Caster\CutArrayStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castCutArray'],
+        'Symfony\Component\VarDumper\Caster\ConstStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'],
+        'Symfony\Component\VarDumper\Caster\EnumStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castEnum'],
+
+        'Closure' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClosure'],
+        'Generator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castGenerator'],
+        'ReflectionType' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castType'],
+        'ReflectionGenerator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castReflectionGenerator'],
+        'ReflectionClass' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClass'],
+        'ReflectionFunctionAbstract' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castFunctionAbstract'],
+        'ReflectionMethod' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castMethod'],
+        'ReflectionParameter' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castParameter'],
+        'ReflectionProperty' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castProperty'],
+        'ReflectionExtension' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castExtension'],
+        'ReflectionZendExtension' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castZendExtension'],
+
+        'Doctrine\Common\Persistence\ObjectManager' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Doctrine\Common\Proxy\Proxy' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castCommonProxy'],
+        'Doctrine\ORM\Proxy\Proxy' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castOrmProxy'],
+        'Doctrine\ORM\PersistentCollection' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castPersistentCollection'],
+
+        'DOMException' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castException'],
+        'DOMStringList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNameList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMImplementation' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castImplementation'],
+        'DOMImplementationList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNode' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNode'],
+        'DOMNameSpaceNode' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNameSpaceNode'],
+        'DOMDocument' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocument'],
+        'DOMNodeList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNamedNodeMap' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMCharacterData' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castCharacterData'],
+        'DOMAttr' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castAttr'],
+        'DOMElement' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castElement'],
+        'DOMText' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castText'],
+        'DOMTypeinfo' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castTypeinfo'],
+        'DOMDomError' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDomError'],
+        'DOMLocator' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLocator'],
+        'DOMDocumentType' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocumentType'],
+        'DOMNotation' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNotation'],
+        'DOMEntity' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castEntity'],
+        'DOMProcessingInstruction' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castProcessingInstruction'],
+        'DOMXPath' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castXPath'],
+
+        'XmlReader' => ['Symfony\Component\VarDumper\Caster\XmlReaderCaster', 'castXmlReader'],
+
+        'ErrorException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castErrorException'],
+        'Exception' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castException'],
+        'Error' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castError'],
+        'Symfony\Component\DependencyInjection\ContainerInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Symfony\Component\HttpFoundation\Request' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castRequest'],
+        'Symfony\Component\VarDumper\Exception\ThrowingCasterException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castThrowingCasterException'],
+        'Symfony\Component\VarDumper\Caster\TraceStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castTraceStub'],
+        'Symfony\Component\VarDumper\Caster\FrameStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castFrameStub'],
+        'Symfony\Component\Debug\Exception\SilencedErrorContext' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castSilencedErrorContext'],
+
+        'PHPUnit_Framework_MockObject_MockObject' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Prophecy\Prophecy\ProphecySubjectInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Mockery\MockInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+
+        'PDO' => ['Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdo'],
+        'PDOStatement' => ['Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdoStatement'],
+
+        'AMQPConnection' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castConnection'],
+        'AMQPChannel' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castChannel'],
+        'AMQPQueue' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castQueue'],
+        'AMQPExchange' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castExchange'],
+        'AMQPEnvelope' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castEnvelope'],
+
+        'ArrayObject' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayObject'],
+        'ArrayIterator' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayIterator'],
+        'SplDoublyLinkedList' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castDoublyLinkedList'],
+        'SplFileInfo' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFileInfo'],
+        'SplFileObject' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFileObject'],
+        'SplFixedArray' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFixedArray'],
+        'SplHeap' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'],
+        'SplObjectStorage' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castObjectStorage'],
+        'SplPriorityQueue' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'],
+        'OuterIterator' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castOuterIterator'],
+
+        'Redis' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedis'],
+        'RedisArray' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisArray'],
+
+        'DateTimeInterface' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castDateTime'],
+        'DateInterval' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castInterval'],
+        'DateTimeZone' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castTimeZone'],
+        'DatePeriod' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castPeriod'],
+
+        'GMP' => ['Symfony\Component\VarDumper\Caster\GmpCaster', 'castGmp'],
+
+        ':curl' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castCurl'],
+        ':dba' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'],
+        ':dba persistent' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'],
+        ':gd' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castGd'],
+        ':mysql link' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castMysqlLink'],
+        ':pgsql large object' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLargeObject'],
+        ':pgsql link' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'],
+        ':pgsql link persistent' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'],
+        ':pgsql result' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castResult'],
+        ':process' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castProcess'],
+        ':stream' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'],
+        ':persistent stream' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'],
+        ':stream-context' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStreamContext'],
+        ':xml' => ['Symfony\Component\VarDumper\Caster\XmlResourceCaster', 'castXml'],
+    ];
 
     protected $maxItems = 2500;
     protected $maxString = -1;
     protected $minDepth = 1;
 
-    private $casters = array();
+    private $casters = [];
     private $prevErrorHandler;
-    private $classInfo = array();
+    private $classInfo = [];
     private $filter = 0;
 
     /**
@@ -211,7 +211,7 @@ public function setMinDepth($minDepth)
      */
     public function cloneVar($var, $filter = 0)
     {
-        $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) {
+        $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) {
             if (E_RECOVERABLE_ERROR === $type || E_USER_ERROR === $type) {
                 // Cloner never dies
                 throw new \ErrorException($msg, 0, $type, $file, $line);
@@ -268,7 +268,7 @@ protected function castObject(Stub $stub, $isNested)
             list($i, $parents, $hasDebugInfo) = $this->classInfo[$class];
         } else {
             $i = 2;
-            $parents = array(strtolower($class));
+            $parents = [strtolower($class)];
             $hasDebugInfo = method_exists($class, '__debugInfo');
 
             foreach (class_parents($class) as $p) {
@@ -281,7 +281,7 @@ protected function castObject(Stub $stub, $isNested)
             }
             $parents[] = '*';
 
-            $this->classInfo[$class] = array($i, $parents, $hasDebugInfo);
+            $this->classInfo[$class] = [$i, $parents, $hasDebugInfo];
         }
 
         $a = Caster::castObject($obj, $class, $hasDebugInfo);
@@ -295,7 +295,7 @@ protected function castObject(Stub $stub, $isNested)
                 }
             }
         } catch (\Exception $e) {
-            $a = array((Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)) + $a;
+            $a = [(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)] + $a;
         }
 
         return $a;
@@ -311,7 +311,7 @@ protected function castObject(Stub $stub, $isNested)
      */
     protected function castResource(Stub $stub, $isNested)
     {
-        $a = array();
+        $a = [];
         $res = $stub->value;
         $type = $stub->class;
 
@@ -322,7 +322,7 @@ protected function castResource(Stub $stub, $isNested)
                 }
             }
         } catch (\Exception $e) {
-            $a = array((Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)) + $a;
+            $a = [(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)] + $a;
         }
 
         return $a;
diff --git a/src/Symfony/Component/VarDumper/Cloner/VarCloner.php b/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
index e02ff9d2b820..a50adef9f526 100644
--- a/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
+++ b/src/Symfony/Component/VarDumper/Cloner/VarCloner.php
@@ -17,7 +17,7 @@
 class VarCloner extends AbstractCloner
 {
     private static $gid;
-    private static $arrayCache = array();
+    private static $arrayCache = [];
 
     /**
      * {@inheritdoc}
@@ -27,19 +27,19 @@ protected function doClone($var)
         $len = 1;                       // Length of $queue
         $pos = 0;                       // Number of cloned items past the minimum depth
         $refsCounter = 0;               // Hard references counter
-        $queue = array(array($var));    // This breadth-first queue is the return value
-        $indexedArrays = array();       // Map of queue indexes that hold numerically indexed arrays
-        $hardRefs = array();            // Map of original zval ids to stub objects
-        $objRefs = array();             // Map of original object handles to their stub object counterpart
-        $resRefs = array();             // Map of original resource handles to their stub object counterpart
-        $values = array();              // Map of stub objects' ids to original values
+        $queue = [[$var]];    // This breadth-first queue is the return value
+        $indexedArrays = [];       // Map of queue indexes that hold numerically indexed arrays
+        $hardRefs = [];            // Map of original zval ids to stub objects
+        $objRefs = [];             // Map of original object handles to their stub object counterpart
+        $resRefs = [];             // Map of original resource handles to their stub object counterpart
+        $values = [];              // Map of stub objects' ids to original values
         $maxItems = $this->maxItems;
         $maxString = $this->maxString;
         $minDepth = $this->minDepth;
         $currentDepth = 0;              // Current tree depth
         $currentDepthFinalIndex = 0;    // Final $queue index for current tree depth
         $minimumDepthReached = 0 === $minDepth; // Becomes true when minimum tree depth has been reached
-        $cookie = (object) array();     // Unique object used to detect hard references
+        $cookie = (object) [];     // Unique object used to detect hard references
         $a = null;                      // Array cast for nested structures
         $stub = null;                   // Stub capturing the main properties of an original item value
                                         // or null if the original value is used directly
@@ -68,7 +68,7 @@ protected function doClone($var)
                     if (\is_int($k)) {
                         continue;
                     }
-                    foreach (array($k => true) as $gk => $gv) {
+                    foreach ([$k => true] as $gk => $gv) {
                     }
                     if ($gk !== $k) {
                         $fromObjCast = true;
@@ -157,7 +157,7 @@ protected function doClone($var)
                             // Happens with copies of $GLOBALS
                             if (isset($v[$gid])) {
                                 unset($v[$gid]);
-                                $a = array();
+                                $a = [];
                                 foreach ($v as $gk => &$gv) {
                                     $a[$gk] = &$gv;
                                 }
@@ -247,12 +247,12 @@ protected function doClone($var)
 
                 if ($arrayStub === $stub) {
                     if ($arrayStub->cut) {
-                        $stub = array($arrayStub->cut, $arrayStub->class => $arrayStub->position);
+                        $stub = [$arrayStub->cut, $arrayStub->class => $arrayStub->position];
                         $arrayStub->cut = 0;
                     } elseif (isset(self::$arrayCache[$arrayStub->class][$arrayStub->position])) {
                         $stub = self::$arrayCache[$arrayStub->class][$arrayStub->position];
                     } else {
-                        self::$arrayCache[$arrayStub->class][$arrayStub->position] = $stub = array($arrayStub->class => $arrayStub->position);
+                        self::$arrayCache[$arrayStub->class][$arrayStub->position] = $stub = [$arrayStub->class => $arrayStub->position];
                     }
                 }
 
@@ -266,10 +266,10 @@ protected function doClone($var)
             if ($fromObjCast) {
                 $fromObjCast = false;
                 $refs = $vals;
-                $vals = array();
+                $vals = [];
                 $j = -1;
                 foreach ($queue[$i] as $k => $v) {
-                    foreach (array($k => true) as $gk => $gv) {
+                    foreach ([$k => true] as $gk => $gv) {
                     }
                     if ($gk !== $k) {
                         $vals = (object) $vals;
diff --git a/src/Symfony/Component/VarDumper/Command/Descriptor/CliDescriptor.php b/src/Symfony/Component/VarDumper/Command/Descriptor/CliDescriptor.php
index 1422960ce118..04a213110b29 100644
--- a/src/Symfony/Component/VarDumper/Command/Descriptor/CliDescriptor.php
+++ b/src/Symfony/Component/VarDumper/Command/Descriptor/CliDescriptor.php
@@ -36,10 +36,10 @@ public function __construct(CliDumper $dumper)
 
     public function describe(OutputInterface $output, Data $data, array $context, int $clientId): void
     {
-        $io = $output instanceof SymfonyStyle ? $output : new SymfonyStyle(new ArrayInput(array()), $output);
+        $io = $output instanceof SymfonyStyle ? $output : new SymfonyStyle(new ArrayInput([]), $output);
         $this->dumper->setColors($output->isDecorated());
 
-        $rows = array(array('date', date('r', $context['timestamp'])));
+        $rows = [['date', date('r', $context['timestamp'])]];
         $lastIdentifier = $this->lastIdentifier;
         $this->lastIdentifier = $clientId;
 
@@ -49,7 +49,7 @@ public function describe(OutputInterface $output, Data $data, array $context, in
             $this->lastIdentifier = $request['identifier'];
             $section = sprintf('%s %s', $request['method'], $request['uri']);
             if ($controller = $request['controller']) {
-                $rows[] = array('controller', rtrim($this->dumper->dump($controller, true), "\n"));
+                $rows[] = ['controller', rtrim($this->dumper->dump($controller, true), "\n")];
             }
         } elseif (isset($context['cli'])) {
             $this->lastIdentifier = $context['cli']['identifier'];
@@ -62,16 +62,16 @@ public function describe(OutputInterface $output, Data $data, array $context, in
 
         if (isset($context['source'])) {
             $source = $context['source'];
-            $rows[] = array('source', sprintf('%s on line %d', $source['name'], $source['line']));
+            $rows[] = ['source', sprintf('%s on line %d', $source['name'], $source['line'])];
             $file = $source['file_relative'] ?? $source['file'];
-            $rows[] = array('file', $file);
+            $rows[] = ['file', $file];
             $fileLink = $source['file_link'] ?? null;
         }
 
-        $io->table(array(), $rows);
+        $io->table([], $rows);
 
         if (isset($fileLink)) {
-            $io->writeln(array('<info>Open source in your IDE/browser:</info>', $fileLink));
+            $io->writeln(['<info>Open source in your IDE/browser:</info>', $fileLink]);
             $io->newLine();
         }
 
diff --git a/src/Symfony/Component/VarDumper/Command/Descriptor/HtmlDescriptor.php b/src/Symfony/Component/VarDumper/Command/Descriptor/HtmlDescriptor.php
index c7eeeb2ae2f8..35a203b0000a 100644
--- a/src/Symfony/Component/VarDumper/Command/Descriptor/HtmlDescriptor.php
+++ b/src/Symfony/Component/VarDumper/Command/Descriptor/HtmlDescriptor.php
@@ -44,7 +44,7 @@ public function describe(OutputInterface $output, Data $data, array $context, in
         $title = '-';
         if (isset($context['request'])) {
             $request = $context['request'];
-            $controller = "<span class='dumped-tag'>{$this->dumper->dump($request['controller'], true, array('maxDepth' => 0))}</span>";
+            $controller = "<span class='dumped-tag'>{$this->dumper->dump($request['controller'], true, ['maxDepth' => 0])}</span>";
             $title = sprintf('<code>%s</code> <a href="%s">%s</a>', $request['method'], $uri = $request['uri'], $uri);
             $dedupIdentifier = $request['identifier'];
         } elseif (isset($context['cli'])) {
@@ -65,10 +65,10 @@ public function describe(OutputInterface $output, Data $data, array $context, in
         }
 
         $isoDate = $this->extractDate($context, 'c');
-        $tags = array_filter(array(
+        $tags = array_filter([
             'controller' => $controller ?? null,
             'project dir' => $projectDir ?? null,
-        ));
+        ]);
 
         $output->writeln(<<<HTML
 <article data-dedup-id="$dedupIdentifier">
diff --git a/src/Symfony/Component/VarDumper/Command/ServerDumpCommand.php b/src/Symfony/Component/VarDumper/Command/ServerDumpCommand.php
index 16194505234e..eb807e35e8b4 100644
--- a/src/Symfony/Component/VarDumper/Command/ServerDumpCommand.php
+++ b/src/Symfony/Component/VarDumper/Command/ServerDumpCommand.php
@@ -41,13 +41,13 @@ class ServerDumpCommand extends Command
     /** @var DumpDescriptorInterface[] */
     private $descriptors;
 
-    public function __construct(DumpServer $server, array $descriptors = array())
+    public function __construct(DumpServer $server, array $descriptors = [])
     {
         $this->server = $server;
-        $this->descriptors = $descriptors + array(
+        $this->descriptors = $descriptors + [
             'cli' => new CliDescriptor(new CliDumper()),
             'html' => new HtmlDescriptor(new HtmlDumper()),
-        );
+        ];
 
         parent::__construct();
     }
diff --git a/src/Symfony/Component/VarDumper/Dumper/ContextProvider/CliContextProvider.php b/src/Symfony/Component/VarDumper/Dumper/ContextProvider/CliContextProvider.php
index 1f8c0c840ce3..e7f8ccf17f19 100644
--- a/src/Symfony/Component/VarDumper/Dumper/ContextProvider/CliContextProvider.php
+++ b/src/Symfony/Component/VarDumper/Dumper/ContextProvider/CliContextProvider.php
@@ -24,9 +24,9 @@ public function getContext(): ?array
             return null;
         }
 
-        return array(
+        return [
             'command_line' => $commandLine = implode(' ', $_SERVER['argv']),
             'identifier' => hash('crc32b', $commandLine.$_SERVER['REQUEST_TIME_FLOAT']),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/VarDumper/Dumper/ContextProvider/RequestContextProvider.php b/src/Symfony/Component/VarDumper/Dumper/ContextProvider/RequestContextProvider.php
index 10b14065272e..bb3cc863fe30 100644
--- a/src/Symfony/Component/VarDumper/Dumper/ContextProvider/RequestContextProvider.php
+++ b/src/Symfony/Component/VarDumper/Dumper/ContextProvider/RequestContextProvider.php
@@ -39,11 +39,11 @@ public function getContext(): ?array
 
         $controller = $request->attributes->get('_controller');
 
-        return array(
+        return [
             'uri' => $request->getUri(),
             'method' => $request->getMethod(),
             'controller' => $controller ? $this->cloner->cloneVar($controller) : $controller,
             'identifier' => spl_object_hash($request),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/VarDumper/Dumper/ContextProvider/SourceContextProvider.php b/src/Symfony/Component/VarDumper/Dumper/ContextProvider/SourceContextProvider.php
index 0c09104117dd..e43e19f4356f 100644
--- a/src/Symfony/Component/VarDumper/Dumper/ContextProvider/SourceContextProvider.php
+++ b/src/Symfony/Component/VarDumper/Dumper/ContextProvider/SourceContextProvider.php
@@ -72,7 +72,7 @@ public function getContext(): ?array
 
                             if ($src) {
                                 $src = explode("\n", $src);
-                                $fileExcerpt = array();
+                                $fileExcerpt = [];
 
                                 for ($i = max($line - 3, 1), $max = min($line + 3, \count($src)); $i <= $max; ++$i) {
                                     $fileExcerpt[] = '<li'.($i === $line ? ' class="selected"' : '').'><code>'.$this->htmlEncode($src[$i - 1]).'</code></li>';
@@ -93,7 +93,7 @@ public function getContext(): ?array
             $name = substr($name, strrpos($name, '/') + 1);
         }
 
-        $context = array('name' => $name, 'file' => $file, 'line' => $line);
+        $context = ['name' => $name, 'file' => $file, 'line' => $line];
         $context['file_excerpt'] = $fileExcerpt;
 
         if (null !== $this->projectDir) {
diff --git a/src/Symfony/Component/VarDumper/Dumper/ServerDumper.php b/src/Symfony/Component/VarDumper/Dumper/ServerDumper.php
index 32e1f124cc02..94795bf6d69d 100644
--- a/src/Symfony/Component/VarDumper/Dumper/ServerDumper.php
+++ b/src/Symfony/Component/VarDumper/Dumper/ServerDumper.php
@@ -30,7 +30,7 @@ class ServerDumper implements DataDumperInterface
      * @param DataDumperInterface|null   $wrappedDumper    A wrapped instance used whenever we failed contacting the server
      * @param ContextProviderInterface[] $contextProviders Context providers indexed by context name
      */
-    public function __construct(string $host, DataDumperInterface $wrappedDumper = null, array $contextProviders = array())
+    public function __construct(string $host, DataDumperInterface $wrappedDumper = null, array $contextProviders = [])
     {
         $this->connection = new Connection($host, $contextProviders);
         $this->wrappedDumper = $wrappedDumper;
diff --git a/src/Symfony/Component/VarDumper/Server/Connection.php b/src/Symfony/Component/VarDumper/Server/Connection.php
index d447b0a98ebc..853bf00c229d 100644
--- a/src/Symfony/Component/VarDumper/Server/Connection.php
+++ b/src/Symfony/Component/VarDumper/Server/Connection.php
@@ -29,7 +29,7 @@ class Connection
      * @param string                     $host             The server host
      * @param ContextProviderInterface[] $contextProviders Context providers indexed by context name
      */
-    public function __construct(string $host, array $contextProviders = array())
+    public function __construct(string $host, array $contextProviders = [])
     {
         if (false === strpos($host, '://')) {
             $host = 'tcp://'.$host;
@@ -51,14 +51,14 @@ public function write(Data $data): bool
             return false;
         }
 
-        $context = array('timestamp' => microtime(true));
+        $context = ['timestamp' => microtime(true)];
         foreach ($this->contextProviders as $name => $provider) {
             $context[$name] = $provider->getContext();
         }
         $context = array_filter($context);
-        $encodedPayload = base64_encode(serialize(array($data, $context)))."\n";
+        $encodedPayload = base64_encode(serialize([$data, $context]))."\n";
 
-        set_error_handler(array(self::class, 'nullErrorHandler'));
+        set_error_handler([self::class, 'nullErrorHandler']);
         try {
             if (-1 !== stream_socket_sendto($this->socket, $encodedPayload)) {
                 return true;
@@ -85,7 +85,7 @@ private static function nullErrorHandler($t, $m)
 
     private function createSocket()
     {
-        set_error_handler(array(self::class, 'nullErrorHandler'));
+        set_error_handler([self::class, 'nullErrorHandler']);
         try {
             return stream_socket_client($this->host, $errno, $errstr, 3, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT);
         } finally {
diff --git a/src/Symfony/Component/VarDumper/Server/DumpServer.php b/src/Symfony/Component/VarDumper/Server/DumpServer.php
index 6f79ca4c1912..ad920bd4fca6 100644
--- a/src/Symfony/Component/VarDumper/Server/DumpServer.php
+++ b/src/Symfony/Component/VarDumper/Server/DumpServer.php
@@ -52,12 +52,12 @@ public function listen(callable $callback): void
         }
 
         foreach ($this->getMessages() as $clientId => $message) {
-            $payload = @unserialize(base64_decode($message), array('allowed_classes' => array(Data::class, Stub::class)));
+            $payload = @unserialize(base64_decode($message), ['allowed_classes' => [Data::class, Stub::class]]);
 
             // Impossible to decode the message, give up.
             if (false === $payload) {
                 if ($this->logger) {
-                    $this->logger->warning('Unable to decode a message from {clientId} client.', array('clientId' => $clientId));
+                    $this->logger->warning('Unable to decode a message from {clientId} client.', ['clientId' => $clientId]);
                 }
 
                 continue;
@@ -65,7 +65,7 @@ public function listen(callable $callback): void
 
             if (!\is_array($payload) || \count($payload) < 2 || !$payload[0] instanceof Data || !\is_array($payload[1])) {
                 if ($this->logger) {
-                    $this->logger->warning('Invalid payload from {clientId} client. Expected an array of two elements (Data $data, array $context)', array('clientId' => $clientId));
+                    $this->logger->warning('Invalid payload from {clientId} client. Expected an array of two elements (Data $data, array $context)', ['clientId' => $clientId]);
                 }
 
                 continue;
@@ -84,8 +84,8 @@ public function getHost(): string
 
     private function getMessages(): iterable
     {
-        $sockets = array((int) $this->socket => $this->socket);
-        $write = array();
+        $sockets = [(int) $this->socket => $this->socket];
+        $write = [];
 
         while (true) {
             $read = $sockets;
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/DateCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/DateCasterTest.php
index d27968667d56..dae13efe5671 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/DateCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/DateCasterTest.php
@@ -47,7 +47,7 @@ public function testCastDateTime($time, $timezone, $xDate, $xTimestamp, $xInfos)
     {
         $stub = new Stub();
         $date = new \DateTime($time, new \DateTimeZone($timezone));
-        $cast = DateCaster::castDateTime($date, array('foo' => 'bar'), $stub, false, 0);
+        $cast = DateCaster::castDateTime($date, ['foo' => 'bar'], $stub, false, 0);
 
         $xDump = <<<EODUMP
 array:1 [
@@ -75,18 +75,18 @@ public function testCastDateTime($time, $timezone, $xDate, $xTimestamp, $xInfos)
 
     public function provideDateTimes()
     {
-        return array(
-            array('2017-04-30 00:00:00.000000', 'Europe/Zurich', '2017-04-30 00:00:00.0 Europe/Zurich (+02:00)', 1493503200, 'Sunday, April 30, 2017%Afrom now%ADST On'),
-            array('2017-12-31 00:00:00.000000', 'Europe/Zurich', '2017-12-31 00:00:00.0 Europe/Zurich (+01:00)', 1514674800, 'Sunday, December 31, 2017%Afrom now%ADST Off'),
-            array('2017-04-30 00:00:00.000000', '+02:00', '2017-04-30 00:00:00.0 +02:00', 1493503200, 'Sunday, April 30, 2017%Afrom now'),
-
-            array('2017-04-30 00:00:00.100000', '+00:00', '2017-04-30 00:00:00.100 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.120000', '+00:00', '2017-04-30 00:00:00.120 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.123000', '+00:00', '2017-04-30 00:00:00.123 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.123400', '+00:00', '2017-04-30 00:00:00.123400 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.123450', '+00:00', '2017-04-30 00:00:00.123450 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-            array('2017-04-30 00:00:00.123456', '+00:00', '2017-04-30 00:00:00.123456 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'),
-        );
+        return [
+            ['2017-04-30 00:00:00.000000', 'Europe/Zurich', '2017-04-30 00:00:00.0 Europe/Zurich (+02:00)', 1493503200, 'Sunday, April 30, 2017%Afrom now%ADST On'],
+            ['2017-12-31 00:00:00.000000', 'Europe/Zurich', '2017-12-31 00:00:00.0 Europe/Zurich (+01:00)', 1514674800, 'Sunday, December 31, 2017%Afrom now%ADST Off'],
+            ['2017-04-30 00:00:00.000000', '+02:00', '2017-04-30 00:00:00.0 +02:00', 1493503200, 'Sunday, April 30, 2017%Afrom now'],
+
+            ['2017-04-30 00:00:00.100000', '+00:00', '2017-04-30 00:00:00.100 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.120000', '+00:00', '2017-04-30 00:00:00.120 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.123000', '+00:00', '2017-04-30 00:00:00.123 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.123400', '+00:00', '2017-04-30 00:00:00.123400 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.123450', '+00:00', '2017-04-30 00:00:00.123450 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+            ['2017-04-30 00:00:00.123456', '+00:00', '2017-04-30 00:00:00.123456 +00:00', 1493510400, 'Sunday, April 30, 2017%Afrom now'],
+        ];
     }
 
     /**
@@ -141,7 +141,7 @@ public function testCastInterval($intervalSpec, $ms, $invert, $xInterval, $xSeco
         $interval = $this->createInterval($intervalSpec, $ms, $invert);
         $stub = new Stub();
 
-        $cast = DateCaster::castInterval($interval, array('foo' => 'bar'), $stub, false, Caster::EXCLUDE_VERBOSE);
+        $cast = DateCaster::castInterval($interval, ['foo' => 'bar'], $stub, false, Caster::EXCLUDE_VERBOSE);
 
         $xDump = <<<EODUMP
 array:1 [
@@ -173,35 +173,35 @@ public function testCastInterval($intervalSpec, $ms, $invert, $xInterval, $xSeco
 
     public function provideIntervals()
     {
-        return array(
-            array('PT0S', 0, 0, '0s', '0s'),
-            array('PT0S', 0.1, 0, '+ 00:00:00.100', '%is'),
-            array('PT1S', 0, 0, '+ 00:00:01.0', '%is'),
-            array('PT2M', 0, 0, '+ 00:02:00.0', '%is'),
-            array('PT3H', 0, 0, '+ 03:00:00.0', '%ss'),
-            array('P4D', 0, 0, '+ 4d', '%ss'),
-            array('P5M', 0, 0, '+ 5m', null),
-            array('P6Y', 0, 0, '+ 6y', null),
-            array('P1Y2M3DT4H5M6S', 0, 0, '+ 1y 2m 3d 04:05:06.0', null),
-            array('PT1M60S', 0, 0, '+ 00:02:00.0', null),
-            array('PT1H60M', 0, 0, '+ 02:00:00.0', null),
-            array('P1DT24H', 0, 0, '+ 2d', null),
-            array('P1M32D', 0, 0, '+ 1m 32d', null),
-
-            array('PT0S', 0, 1, '0s', '0s'),
-            array('PT0S', 0.1, 1, '- 00:00:00.100', '%is'),
-            array('PT1S', 0, 1, '- 00:00:01.0', '%is'),
-            array('PT2M', 0, 1, '- 00:02:00.0', '%is'),
-            array('PT3H', 0, 1, '- 03:00:00.0', '%ss'),
-            array('P4D', 0, 1, '- 4d', '%ss'),
-            array('P5M', 0, 1, '- 5m', null),
-            array('P6Y', 0, 1, '- 6y', null),
-            array('P1Y2M3DT4H5M6S', 0, 1, '- 1y 2m 3d 04:05:06.0', null),
-            array('PT1M60S', 0, 1, '- 00:02:00.0', null),
-            array('PT1H60M', 0, 1, '- 02:00:00.0', null),
-            array('P1DT24H', 0, 1, '- 2d', null),
-            array('P1M32D', 0, 1, '- 1m 32d', null),
-        );
+        return [
+            ['PT0S', 0, 0, '0s', '0s'],
+            ['PT0S', 0.1, 0, '+ 00:00:00.100', '%is'],
+            ['PT1S', 0, 0, '+ 00:00:01.0', '%is'],
+            ['PT2M', 0, 0, '+ 00:02:00.0', '%is'],
+            ['PT3H', 0, 0, '+ 03:00:00.0', '%ss'],
+            ['P4D', 0, 0, '+ 4d', '%ss'],
+            ['P5M', 0, 0, '+ 5m', null],
+            ['P6Y', 0, 0, '+ 6y', null],
+            ['P1Y2M3DT4H5M6S', 0, 0, '+ 1y 2m 3d 04:05:06.0', null],
+            ['PT1M60S', 0, 0, '+ 00:02:00.0', null],
+            ['PT1H60M', 0, 0, '+ 02:00:00.0', null],
+            ['P1DT24H', 0, 0, '+ 2d', null],
+            ['P1M32D', 0, 0, '+ 1m 32d', null],
+
+            ['PT0S', 0, 1, '0s', '0s'],
+            ['PT0S', 0.1, 1, '- 00:00:00.100', '%is'],
+            ['PT1S', 0, 1, '- 00:00:01.0', '%is'],
+            ['PT2M', 0, 1, '- 00:02:00.0', '%is'],
+            ['PT3H', 0, 1, '- 03:00:00.0', '%ss'],
+            ['P4D', 0, 1, '- 4d', '%ss'],
+            ['P5M', 0, 1, '- 5m', null],
+            ['P6Y', 0, 1, '- 6y', null],
+            ['P1Y2M3DT4H5M6S', 0, 1, '- 1y 2m 3d 04:05:06.0', null],
+            ['PT1M60S', 0, 1, '- 00:02:00.0', null],
+            ['PT1H60M', 0, 1, '- 02:00:00.0', null],
+            ['P1DT24H', 0, 1, '- 2d', null],
+            ['P1M32D', 0, 1, '- 1m 32d', null],
+        ];
     }
 
     /**
@@ -244,7 +244,7 @@ public function testCastTimeZone($timezone, $xTimezone, $xRegion)
         $timezone = new \DateTimeZone($timezone);
         $stub = new Stub();
 
-        $cast = DateCaster::castTimeZone($timezone, array('foo' => 'bar'), $stub, false, Caster::EXCLUDE_VERBOSE);
+        $cast = DateCaster::castTimeZone($timezone, ['foo' => 'bar'], $stub, false, Caster::EXCLUDE_VERBOSE);
 
         $xDump = <<<EODUMP
 array:1 [
@@ -274,27 +274,27 @@ public function provideTimeZones()
     {
         $xRegion = \extension_loaded('intl') ? '%s' : '';
 
-        return array(
+        return [
             // type 1 (UTC offset)
-            array('-12:00', '-12:00', ''),
-            array('+00:00', '+00:00', ''),
-            array('+14:00', '+14:00', ''),
+            ['-12:00', '-12:00', ''],
+            ['+00:00', '+00:00', ''],
+            ['+14:00', '+14:00', ''],
 
             // type 2 (timezone abbreviation)
-            array('GMT', '+00:00', ''),
-            array('a', '+01:00', ''),
-            array('b', '+02:00', ''),
-            array('z', '+00:00', ''),
+            ['GMT', '+00:00', ''],
+            ['a', '+01:00', ''],
+            ['b', '+02:00', ''],
+            ['z', '+00:00', ''],
 
             // type 3 (timezone identifier)
-            array('Africa/Tunis', 'Africa/Tunis (%s:00)', $xRegion),
-            array('America/Panama', 'America/Panama (%s:00)', $xRegion),
-            array('Asia/Jerusalem', 'Asia/Jerusalem (%s:00)', $xRegion),
-            array('Atlantic/Canary', 'Atlantic/Canary (%s:00)', $xRegion),
-            array('Australia/Perth', 'Australia/Perth (%s:00)', $xRegion),
-            array('Europe/Zurich', 'Europe/Zurich (%s:00)', $xRegion),
-            array('Pacific/Tahiti', 'Pacific/Tahiti (%s:00)', $xRegion),
-        );
+            ['Africa/Tunis', 'Africa/Tunis (%s:00)', $xRegion],
+            ['America/Panama', 'America/Panama (%s:00)', $xRegion],
+            ['Asia/Jerusalem', 'Asia/Jerusalem (%s:00)', $xRegion],
+            ['Atlantic/Canary', 'Atlantic/Canary (%s:00)', $xRegion],
+            ['Australia/Perth', 'Australia/Perth (%s:00)', $xRegion],
+            ['Europe/Zurich', 'Europe/Zurich (%s:00)', $xRegion],
+            ['Pacific/Tahiti', 'Pacific/Tahiti (%s:00)', $xRegion],
+        ];
     }
 
     /**
@@ -321,7 +321,7 @@ public function testCastPeriod($start, $interval, $end, $options, $xPeriod, $xDa
         $p = new \DatePeriod(new \DateTime($start), new \DateInterval($interval), \is_int($end) ? $end : new \DateTime($end), $options);
         $stub = new Stub();
 
-        $cast = DateCaster::castPeriod($p, array(), $stub, false, 0);
+        $cast = DateCaster::castPeriod($p, [], $stub, false, 0);
 
         $xDump = <<<EODUMP
 array:1 [
@@ -349,28 +349,28 @@ public function testCastPeriod($start, $interval, $end, $options, $xPeriod, $xDa
 
     public function providePeriods()
     {
-        $periods = array(
-            array('2017-01-01', 'P1D', '2017-01-03', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-03 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02'),
-            array('2017-01-01', 'P1D', 1, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01%a2) 2017-01-02'),
+        $periods = [
+            ['2017-01-01', 'P1D', '2017-01-03', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-03 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02'],
+            ['2017-01-01', 'P1D', 1, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01%a2) 2017-01-02'],
 
-            array('2017-01-01', 'P1D', '2017-01-04', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-04 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03'),
-            array('2017-01-01', 'P1D', 2, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 3 time/s', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03'),
+            ['2017-01-01', 'P1D', '2017-01-04', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-04 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03'],
+            ['2017-01-01', 'P1D', 2, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 3 time/s', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03'],
 
-            array('2017-01-01', 'P1D', '2017-01-05', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-05 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02%a1 more'),
-            array('2017-01-01', 'P1D', 3, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 4 time/s', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03%a1 more'),
+            ['2017-01-01', 'P1D', '2017-01-05', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-05 00:00:00.0', '1) 2017-01-01%a2) 2017-01-02%a1 more'],
+            ['2017-01-01', 'P1D', 3, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 4 time/s', '1) 2017-01-01%a2) 2017-01-02%a3) 2017-01-03%a1 more'],
 
-            array('2017-01-01', 'P1D', '2017-01-21', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-21 00:00:00.0', '1) 2017-01-01%a17 more'),
-            array('2017-01-01', 'P1D', 19, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 20 time/s', '1) 2017-01-01%a17 more'),
+            ['2017-01-01', 'P1D', '2017-01-21', 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) to 2017-01-21 00:00:00.0', '1) 2017-01-01%a17 more'],
+            ['2017-01-01', 'P1D', 19, 0, 'every + 1d, from 2017-01-01 00:00:00.0 (included) recurring 20 time/s', '1) 2017-01-01%a17 more'],
 
-            array('2017-01-01 01:00:00', 'P1D', '2017-01-03 01:00:00', 0, 'every + 1d, from 2017-01-01 01:00:00.0 (included) to 2017-01-03 01:00:00.0', '1) 2017-01-01 01:00:00.0%a2) 2017-01-02 01:00:00.0'),
-            array('2017-01-01 01:00:00', 'P1D', 1, 0, 'every + 1d, from 2017-01-01 01:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01 01:00:00.0%a2) 2017-01-02 01:00:00.0'),
+            ['2017-01-01 01:00:00', 'P1D', '2017-01-03 01:00:00', 0, 'every + 1d, from 2017-01-01 01:00:00.0 (included) to 2017-01-03 01:00:00.0', '1) 2017-01-01 01:00:00.0%a2) 2017-01-02 01:00:00.0'],
+            ['2017-01-01 01:00:00', 'P1D', 1, 0, 'every + 1d, from 2017-01-01 01:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01 01:00:00.0%a2) 2017-01-02 01:00:00.0'],
 
-            array('2017-01-01', 'P1DT1H', '2017-01-03', 0, 'every + 1d 01:00:00.0, from 2017-01-01 00:00:00.0 (included) to 2017-01-03 00:00:00.0', '1) 2017-01-01 00:00:00.0%a2) 2017-01-02 01:00:00.0'),
-            array('2017-01-01', 'P1DT1H', 1, 0, 'every + 1d 01:00:00.0, from 2017-01-01 00:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01 00:00:00.0%a2) 2017-01-02 01:00:00.0'),
+            ['2017-01-01', 'P1DT1H', '2017-01-03', 0, 'every + 1d 01:00:00.0, from 2017-01-01 00:00:00.0 (included) to 2017-01-03 00:00:00.0', '1) 2017-01-01 00:00:00.0%a2) 2017-01-02 01:00:00.0'],
+            ['2017-01-01', 'P1DT1H', 1, 0, 'every + 1d 01:00:00.0, from 2017-01-01 00:00:00.0 (included) recurring 2 time/s', '1) 2017-01-01 00:00:00.0%a2) 2017-01-02 01:00:00.0'],
 
-            array('2017-01-01', 'P1D', '2017-01-04', \DatePeriod::EXCLUDE_START_DATE, 'every + 1d, from 2017-01-01 00:00:00.0 (excluded) to 2017-01-04 00:00:00.0', '1) 2017-01-02%a2) 2017-01-03'),
-            array('2017-01-01', 'P1D', 2, \DatePeriod::EXCLUDE_START_DATE, 'every + 1d, from 2017-01-01 00:00:00.0 (excluded) recurring 2 time/s', '1) 2017-01-02%a2) 2017-01-03'),
-        );
+            ['2017-01-01', 'P1D', '2017-01-04', \DatePeriod::EXCLUDE_START_DATE, 'every + 1d, from 2017-01-01 00:00:00.0 (excluded) to 2017-01-04 00:00:00.0', '1) 2017-01-02%a2) 2017-01-03'],
+            ['2017-01-01', 'P1D', 2, \DatePeriod::EXCLUDE_START_DATE, 'every + 1d, from 2017-01-01 00:00:00.0 (excluded) recurring 2 time/s', '1) 2017-01-02%a2) 2017-01-03'],
+        ];
 
         if (\PHP_VERSION_ID < 70107) {
             array_walk($periods, function (&$i) { $i[5] = ''; });
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/GmpCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/GmpCasterTest.php
index 1ddf897461f6..eb758e8e2c68 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/GmpCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/GmpCasterTest.php
@@ -33,9 +33,9 @@ public function testCastGmp()
   "\\x00~\\x00value" => %s
 ]
 EODUMP;
-        $this->assertDumpEquals(sprintf($gmpDump, $gmpString), GmpCaster::castGmp($gmpString, array(), new Stub(), false, 0));
-        $this->assertDumpEquals(sprintf($gmpDump, $gmpOctal), GmpCaster::castGmp($gmpOctal, array(), new Stub(), false, 0));
-        $this->assertDumpEquals(sprintf($gmpDump, $gmp), GmpCaster::castGmp($gmp, array(), new Stub(), false, 0));
+        $this->assertDumpEquals(sprintf($gmpDump, $gmpString), GmpCaster::castGmp($gmpString, [], new Stub(), false, 0));
+        $this->assertDumpEquals(sprintf($gmpDump, $gmpOctal), GmpCaster::castGmp($gmpOctal, [], new Stub(), false, 0));
+        $this->assertDumpEquals(sprintf($gmpDump, $gmp), GmpCaster::castGmp($gmp, [], new Stub(), false, 0));
 
         $dump = <<<EODUMP
 GMP {
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php
index e7487f5ca081..c7d79813887e 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/SplCasterTest.php
@@ -23,8 +23,8 @@ class SplCasterTest extends TestCase
 
     public function getCastFileInfoTests()
     {
-        return array(
-            array(__FILE__, <<<'EOTXT'
+        return [
+            [__FILE__, <<<'EOTXT'
 SplFileInfo {
 %Apath: "%sCaster"
   filename: "SplCasterTest.php"
@@ -49,8 +49,8 @@ public function getCastFileInfoTests()
   link: false
 %A}
 EOTXT
-            ),
-            array('https://google.com/about', <<<'EOTXT'
+            ],
+            ['https://google.com/about', <<<'EOTXT'
 SplFileInfo {
 %Apath: "https://google.com"
   filename: "about"
@@ -60,8 +60,8 @@ public function getCastFileInfoTests()
   realPath: false
 %A}
 EOTXT
-            ),
-        );
+            ],
+        ];
     }
 
     /** @dataProvider getCastFileInfoTests */
@@ -137,12 +137,12 @@ public function testCastSplDoublyLinkedList($modeValue, $modeDump)
 
     public function provideCastSplDoublyLinkedList()
     {
-        return array(
-            array(\SplDoublyLinkedList::IT_MODE_FIFO, 'IT_MODE_FIFO | IT_MODE_KEEP'),
-            array(\SplDoublyLinkedList::IT_MODE_LIFO, 'IT_MODE_LIFO | IT_MODE_KEEP'),
-            array(\SplDoublyLinkedList::IT_MODE_FIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_FIFO | IT_MODE_DELETE'),
-            array(\SplDoublyLinkedList::IT_MODE_LIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_LIFO | IT_MODE_DELETE'),
-        );
+        return [
+            [\SplDoublyLinkedList::IT_MODE_FIFO, 'IT_MODE_FIFO | IT_MODE_KEEP'],
+            [\SplDoublyLinkedList::IT_MODE_LIFO, 'IT_MODE_LIFO | IT_MODE_KEEP'],
+            [\SplDoublyLinkedList::IT_MODE_FIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_FIFO | IT_MODE_DELETE'],
+            [\SplDoublyLinkedList::IT_MODE_LIFO | \SplDoublyLinkedList::IT_MODE_DELETE, 'IT_MODE_LIFO | IT_MODE_DELETE'],
+        ];
     }
 
     public function testCastObjectStorageIsntModified()
@@ -166,7 +166,7 @@ public function testCastObjectStorageDumpsInfo()
 
     public function testCastArrayObject()
     {
-        $var = new \ArrayObject(array(123));
+        $var = new \ArrayObject([123]);
         $var->foo = 234;
 
         $expected = <<<EOTXT
@@ -185,7 +185,7 @@ public function testCastArrayObject()
 
     public function testArrayIterator()
     {
-        $var = new MyArrayIterator(array(234));
+        $var = new MyArrayIterator([234]);
 
         $expected = <<<EOTXT
 Symfony\Component\VarDumper\Tests\Caster\MyArrayIterator {
diff --git a/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php b/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php
index 46032b7b7425..0b51d02dc98b 100644
--- a/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php
@@ -42,21 +42,21 @@ public function testDescribe(array $context, string $expectedOutput)
             return $s;
         }));
 
-        $descriptor->describe($output, new Data(array(array(123))), $context + array('timestamp' => 1544804268.3668), 1);
+        $descriptor->describe($output, new Data([[123]]), $context + ['timestamp' => 154480426
10000
8.3668], 1);
 
         $this->assertStringMatchesFormat(trim($expectedOutput), str_replace(PHP_EOL, "\n", trim($output->fetch())));
     }
 
     public function provideContext()
     {
-        yield 'source' => array(
-            array(
-                'source' => array(
+        yield 'source' => [
+            [
+                'source' => [
                     'name' => 'CliDescriptorTest.php',
                     'line' => 30,
                     'file' => '/Users/ogi/symfony/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php',
-                ),
-            ),
+                ],
+            ],
             <<<TXT
 Received from client #1
 -----------------------
@@ -67,18 +67,18 @@ public function provideContext()
   file     /Users/ogi/symfony/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php  
  -------- ---------------------------------------------------------------------------------------------------
 TXT
-        );
+        ];
 
-        yield 'source full' => array(
-            array(
-                'source' => array(
+        yield 'source full' => [
+            [
+                'source' => [
                     'name' => 'CliDescriptorTest.php',
                     'line' => 30,
                     'file_relative' => 'src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php',
                     'file' => '/Users/ogi/symfony/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php',
                     'file_link' => 'phpstorm://open?file=/Users/ogi/symfony/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php&line=30',
-                ),
-            ),
+                ],
+            ],
             <<<TXT
 Received from client #1
 -----------------------
@@ -92,15 +92,15 @@ public function provideContext()
 Open source in your IDE/browser:
 phpstorm://open?file=/Users/ogi/symfony/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php&line=30
 TXT
-        );
+        ];
 
-        yield 'cli' => array(
-            array(
-                'cli' => array(
+        yield 'cli' => [
+            [
+                'cli' => [
                     'identifier' => 'd8bece1c',
                     'command_line' => 'bin/phpunit',
-                ),
-            ),
+                ],
+            ],
             <<<TXT
 $ bin/phpunit
 -------------
@@ -109,17 +109,17 @@ public function provideContext()
   date   Fri, 14 Dec 2018 16:17:48 +0000  
  ------ ---------------------------------
 TXT
-        );
+        ];
 
-        yield 'request' => array(
-            array(
-                'request' => array(
+        yield 'request' => [
+            [
+                'request' => [
                     'identifier' => 'd8bece1c',
-                    'controller' => new Data(array(array('FooController.php'))),
+                    'controller' => new Data([['FooController.php']]),
                     'method' => 'GET',
                     'uri' => 'http://localhost/foo',
-                ),
-            ),
+                ],
+            ],
             <<<TXT
 GET http://localhost/foo
 ------------------------
@@ -129,6 +129,6 @@ public function provideContext()
   controller   "FooController.php"              
  ------------ --------------------------------- 
 TXT
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/HtmlDescriptorTest.php b/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/HtmlDescriptorTest.php
index f80f7cf27b02..f1febf7ceccf 100644
--- a/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/HtmlDescriptorTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/HtmlDescriptorTest.php
@@ -39,11 +39,11 @@ public function testItOutputsStylesAndScriptsOnFirstDescribeCall()
         $dumper->method('dump')->willReturn('[DUMPED]');
         $descriptor = new HtmlDescriptor($dumper);
 
-        $descriptor->describe($output, new Data(array(array(123))), array('timestamp' => 1544804268.3668), 1);
+        $descriptor->describe($output, new Data([[123]]), ['timestamp' => 1544804268.3668], 1);
 
         $this->assertStringMatchesFormat('<style>%A</style><script>%A</script>%A', $output->fetch(), 'styles & scripts are output');
 
-        $descriptor->describe($output, new Data(array(array(123))), array('timestamp' => 1544804268.3668), 1);
+        $descriptor->describe($output, new Data([[123]]), ['timestamp' => 1544804268.3668], 1);
 
         $this->assertStringNotMatchesFormat('<style>%A</style><script>%A</script>%A', $output->fetch(), 'styles & scripts are output only once');
     }
@@ -58,21 +58,21 @@ public function testDescribe(array $context, string $expectedOutput)
         $dumper->method('dump')->willReturn('[DUMPED]');
         $descriptor = new HtmlDescriptor($dumper);
 
-        $descriptor->describe($output, new Data(array(array(123))), $context + array('timestamp' => 1544804268.3668), 1);
+        $descriptor->describe($output, new Data([[123]]), $context + ['timestamp' => 1544804268.3668], 1);
 
         $this->assertStringMatchesFormat(trim($expectedOutput), trim(preg_replace('@<style>.*</style><script>.*</script>@s', '', $output->fetch())));
     }
 
     public function provideContext()
     {
-        yield 'source' => array(
-            array(
-                'source' => array(
+        yield 'source' => [
+            [
+                'source' => [
                     'name' => 'CliDescriptorTest.php',
                     'line' => 30,
                     'file' => '/Users/ogi/symfony/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php',
-                ),
-            ),
+                ],
+            ],
             <<<TXT
 <article data-dedup-id="%s">
     <header>
@@ -92,19 +92,19 @@ public function provideContext()
     </section>
 </article>
 TXT
-        );
+        ];
 
-        yield 'source full' => array(
-            array(
-                'source' => array(
+        yield 'source full' => [
+            [
+                'source' => [
                     'name' => 'CliDescriptorTest.php',
                     'project_dir' => 'src/Symfony/',
                     'line' => 30,
                     'file_relative' => 'src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php',
                     'file' => '/Users/ogi/symfony/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php',
                     'file_link' => 'phpstorm://open?file=/Users/ogi/symfony/src/Symfony/Component/VarDumper/Tests/Command/Descriptor/CliDescriptorTest.php&line=30',
-                ),
-            ),
+                ],
+            ],
             <<<TXT
 <article data-dedup-id="%s">
     <header>
@@ -128,15 +128,15 @@ public function provideContext()
     </section>
 </article>
 TXT
-        );
+        ];
 
-        yield 'cli' => array(
-            array(
-                'cli' => array(
+        yield 'cli' => [
+            [
+                'cli' => [
                     'identifier' => 'd8bece1c',
                     'command_line' => 'bin/phpunit',
-                ),
-            ),
+                ],
+            ],
             <<<TXT
 <article data-dedup-id="d8bece1c">
     <header>
@@ -156,17 +156,17 @@ public function provideContext()
     </section>
 </article>
 TXT
-        );
+        ];
 
-        yield 'request' => array(
-            array(
-                'request' => array(
+        yield 'request' => [
+            [
+                'request' => [
                     'identifier' => 'd8bece1c',
-                    'controller' => new Data(array(array('FooController.php'))),
+                    'controller' => new Data([['FooController.php']]),
                     'method' => 'GET',
                     'uri' => 'http://localhost/foo',
-                ),
-            ),
+                ],
+            ],
             <<<TXT
 <article data-dedup-id="d8bece1c">
     <header>
@@ -190,6 +190,6 @@ public function provideContext()
     </section>
 </article>
 TXT
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/VarDumper/Tests/Dumper/ServerDumperTest.php b/src/Symfony/Component/VarDumper/Tests/Dumper/ServerDumperTest.php
index 288391bfcfef..b4bef49cd3f9 100644
--- a/src/Symfony/Component/VarDumper/Tests/Dumper/ServerDumperTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Dumper/ServerDumperTest.php
@@ -44,14 +44,14 @@ public function testDump()
 
         $cloner = new VarCloner();
         $data = $cloner->cloneVar('foo');
-        $dumper = new ServerDumper(self::VAR_DUMPER_SERVER, $wrappedDumper, array(
+        $dumper = new ServerDumper(self::VAR_DUMPER_SERVER, $wrappedDumper, [
             'foo_provider' => new class() implements ContextProviderInterface {
                 public function getContext(): ?array
                 {
-                    return array('foo');
+                    return ['foo'];
                 }
             },
-        ));
+        ]);
 
         $dumped = null;
         $process = $this->getServerProcess();
@@ -84,10 +84,10 @@ public function getContext(): ?array
 
     private function getServerProcess(): Process
     {
-        $process = new PhpProcess(file_get_contents(__DIR__.'/../Fixtures/dump_server.php'), null, array(
+        $process = new PhpProcess(file_get_contents(__DIR__.'/../Fixtures/dump_server.php'), null, [
             'COMPONENT_ROOT' => __DIR__.'/../../',
             'VAR_DUMPER_SERVER' => self::VAR_DUMPER_SERVER,
-        ));
+        ]);
         $process->inheritEnvironmentVariables(true);
 
         return $process->setTimeout(9);
diff --git a/src/Symfony/Component/VarDumper/Tests/Server/ConnectionTest.php b/src/Symfony/Component/VarDumper/Tests/Server/ConnectionTest.php
index eeb7495dac1f..21902b5cf1aa 100644
--- a/src/Symfony/Component/VarDumper/Tests/Server/ConnectionTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Server/ConnectionTest.php
@@ -26,14 +26,14 @@ public function testDump()
     {
         $cloner = new VarCloner();
         $data = $cloner->cloneVar('foo');
-        $connection = new Connection(self::VAR_DUMPER_SERVER, array(
+        $connection = new Connection(self::VAR_DUMPER_SERVER, [
             'foo_provider' => new class() implements ContextProviderInterface {
                 public function getContext(): ?array
                 {
-                    return array('foo');
+                    return ['foo'];
                 }
             },
-        ));
+        ]);
 
         $dumped = null;
         $process = $this->getServerProcess();
@@ -77,10 +77,10 @@ public function testNoServer()
 
     private function getServerProcess(): Process
     {
-        $process = new PhpProcess(file_get_contents(__DIR__.'/../Fixtures/dump_server.php'), null, array(
+        $process = new PhpProcess(file_get_contents(__DIR__.'/../Fixtures/dump_server.php'), null, [
             'COMPONENT_ROOT' => __DIR__.'/../../',
             'VAR_DUMPER_SERVER' => self::VAR_DUMPER_SERVER,
-        ));
+        ]);
         $process->inheritEnvironmentVariables(true);
 
         return $process->setTimeout(9);
diff --git a/src/Symfony/Component/VarDumper/Tests/Test/VarDumperTestTraitTest.php b/src/Symfony/Component/VarDumper/Tests/Test/VarDumperTestTraitTest.php
index 7fea98c2eee7..a4d489cf3405 100644
--- a/src/Symfony/Component/VarDumper/Tests/Test/VarDumperTestTraitTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Test/VarDumperTestTraitTest.php
@@ -41,6 +41,6 @@ public function testItComparesLargeData()
 
     public function testAllowsNonScalarExpectation()
     {
-        $this->assertDumpEquals(new \ArrayObject(array('bim' => 'bam')), new \ArrayObject(array('bim' => 'bam')));
+        $this->assertDumpEquals(new \ArrayObject(['bim' => 'bam']), new \ArrayObject(['bim' => 'bam']));
     }
 }
diff --git a/src/Symfony/Component/Workflow/Dumper/PlantUmlDumper.php b/src/Symfony/Component/Workflow/Dumper/PlantUmlDumper.php
index 84842a39552f..e5e3869824ab 100644
--- a/src/Symfony/Component/Workflow/Dumper/PlantUmlDumper.php
+++ b/src/Symfony/Component/Workflow/Dumper/PlantUmlDumper.php
@@ -31,24 +31,24 @@ class PlantUmlDumper implements DumperInterface
 
     const STATEMACHINE_TRANSITION = 'arrow';
     const WORKFLOW_TRANSITION = 'square';
-    const TRANSITION_TYPES = array(self::STATEMACHINE_TRANSITION, self::WORKFLOW_TRANSITION);
-    const DEFAULT_OPTIONS = array(
-        'skinparams' => array(
+    const TRANSITION_TYPES = [self::STATEMACHINE_TRANSITION, self::WORKFLOW_TRANSITION];
+    const DEFAULT_OPTIONS = [
+        'skinparams' => [
             'titleBorderRoundCorner' => 15,
             'titleBorderThickness' => 2,
-            'state' => array(
+            'state' => [
                 'BackgroundColor'.self::INITIAL => '#87b741',
                 'BackgroundColor'.self::MARKED => '#3887C6',
                 'BorderColor' => '#3887C6',
                 'BorderColor'.self::MARKED => 'Black',
                 'FontColor'.self::MARKED => 'White',
-            ),
-            'agent' => array(
+            ],
+            'agent' => [
                 'BackgroundColor' => '#ffffff',
                 'BorderColor' => '#3887C6',
-            ),
-        ),
-    );
+            ],
+        ],
+    ];
 
     private $transitionType = self::STATEMACHINE_TRANSITION;
 
@@ -60,7 +60,7 @@ public function __construct(string $transitionType = null)
         $this->transitionType = $transitionType;
     }
 
-    public function dump(Definition $definition, Marking $marking = null, array $options = array()): string
+    public function dump(Definition $definition, Marking $marking = null, array $options = []): string
     {
         $options = array_replace_recursive(self::DEFAULT_OPTIONS, $options);
         $code = $this->initialize($options);
@@ -84,10 +84,10 @@ public function dump(Definition $definition, Marking $marking = null, array $opt
                 foreach ($transition->getTos() as $to) {
                     $toEscaped = $this->escape($to);
                     if ($this->isWorkflowTransitionType()) {
-                        $lines = array(
+                        $lines = [
                             "$fromEscaped --> $transitionEscaped",
                             "$transitionEscaped --> $toEscaped",
-                        );
+                        ];
                         foreach ($lines as $line) {
                             if (!\in_array($line, $code)) {
                                 $code[] = $line;
@@ -128,7 +128,7 @@ private function getLines(array $code): string
 
     private function initialize(array $options): array
     {
-        $code = array();
+        $code = [];
         if (isset($options['title'])) {
             $code[] = "title {$options['title']}";
         }
diff --git a/src/Symfony/Component/Workflow/Metadata/InMemoryMetadataStore.php b/src/Symfony/Component/Workflow/Metadata/InMemoryMetadataStore.php
index 7ab1eeede9ed..5e8b9c4f78ec 100644
--- a/src/Symfony/Component/Workflow/Metadata/InMemoryMetadataStore.php
+++ b/src/Symfony/Component/Workflow/Metadata/InMemoryMetadataStore.php
@@ -24,7 +24,7 @@ final class InMemoryMetadataStore implements MetadataStoreInterface
     private $placesMetadata;
     private $transitionsMetadata;
 
-    public function __construct(array $workflowMetadata = array(), array $placesMetadata = array(), \SplObjectStorage $transitionsMetadata = null)
+    public function __construct(array $workflowMetadata = [], array $placesMetadata = [], \SplObjectStorage $transitionsMetadata = null)
     {
         $this->workflowMetadata = $workflowMetadata;
         $this->placesMetadata = $placesMetadata;
@@ -38,11 +38,11 @@ public function getWorkflowMetadata(): array
 
     public function getPlaceMetadata(string $place): array
     {
-        return $this->placesMetadata[$place] ?? array();
+        return $this->placesMetadata[$place] ?? [];
     }
 
     public function getTransitionMetadata(Transition $transition): array
     {
-        return $this->transitionsMetadata[$transition] ?? array();
+        return $this->transitionsMetadata[$transition] ?? [];
     }
 }
diff --git a/src/Symfony/Component/Workflow/Registry.php b/src/Symfony/Component/Workflow/Registry.php
index c675d8e21e83..f1a2df98e6eb 100644
--- a/src/Symfony/Component/Workflow/Registry.php
+++ b/src/Symfony/Component/Workflow/Registry.php
@@ -21,7 +21,7 @@
  */
 class Registry
 {
-    private $workflows = array();
+    private $workflows = [];
 
     /**
      * @param Workflow                 $workflow
@@ -32,12 +32,12 @@ class Registry
     public function add(Workflow $workflow, $supportStrategy)
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.1. Use addWorkflow() instead.', __METHOD__), E_USER_DEPRECATED);
-        $this->workflows[] = array($workflow, $supportStrategy);
+        $this->workflows[] = [$workflow, $supportStrategy];
     }
 
     public function addWorkflow(WorkflowInterface $workflow, WorkflowSupportStrategyInterface $supportStrategy)
     {
-        $this->workflows[] = array($workflow, $supportStrategy);
+        $this->workflows[] = [$workflow, $supportStrategy];
     }
 
     /**
@@ -73,7 +73,7 @@ public function get($subject, $workflowName = null)
      */
     public function all($subject): array
     {
-        $matched = array();
+        $matched = [];
         foreach ($this->workflows as list($workflow, $supportStrategy)) {
             if ($supportStrategy->supports($workflow, $subject)) {
                 $matched[] = $workflow;
diff --git a/src/Symfony/Component/Workflow/Tests/DefinitionBuilderTest.php b/src/Symfony/Component/Workflow/Tests/DefinitionBuilderTest.php
index 1af7a326935d..fdc4703a1b42 100644
--- a/src/Symfony/Component/Workflow/Tests/DefinitionBuilderTest.php
+++ b/src/Symfony/Component/Workflow/Tests/DefinitionBuilderTest.php
@@ -11,7 +11,7 @@ class DefinitionBuilderTest extends TestCase
 {
     public function testSetInitialPlace()
     {
-        $builder = new DefinitionBuilder(array('a', 'b'));
+        $builder = new DefinitionBuilder(['a', 'b']);
         $builder->setInitialPlace('b');
         $definition = $builder->build();
 
@@ -24,7 +24,7 @@ public function testAddTransition()
 
         $transition0 = new Transition('name0', $places[0], $places[1]);
         $transition1 = new Transition('name1', $places[0], $places[1]);
-        $builder = new DefinitionBuilder($places, array($transition0));
+        $builder = new DefinitionBuilder($places, [$transition0]);
         $builder->addTransition($transition1);
 
         $definition = $builder->build();
@@ -36,7 +36,7 @@ public function testAddTransition()
 
     public function testAddPlace()
     {
-        $builder = new DefinitionBuilder(array('a'), array());
+        $builder = new DefinitionBuilder(['a'], []);
         $builder->addPlace('b');
 
         $definition = $builder->build();
@@ -48,7 +48,7 @@ public function testAddPlace()
 
     public function testSetMetadataStore()
     {
-        $builder = new DefinitionBuilder(array('a'));
+        $builder = new DefinitionBuilder(['a']);
         $metadataStore = new InMemoryMetadataStore();
         $builder->setMetadataStore($metadataStore);
         $definition = $builder->build();
diff --git a/src/Symfony/Component/Workflow/Tests/DefinitionTest.php b/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
index 92e517df2f57..e10aad81cf14 100644
--- a/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
+++ b/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
@@ -11,7 +11,7 @@ class DefinitionTest extends TestCase
     public function testAddPlaces()
     {
         $places = range('a', 'e');
-        $definition = new Definition($places, array());
+        $definition = new Definition($places, []);
 
         $this->assertCount(5, $definition->getPlaces());
 
@@ -21,7 +21,7 @@ public function testAddPlaces()
     public function testSetInitialPlace()
     {
         $places = range('a', 'e');
-        $definition = new Definition($places, array(), $places[3]);
+        $definition = new Definition($places, [], $places[3]);
 
         $this->assertEquals($places[3], $definition->getInitialPlace());
     }
@@ -32,7 +32,7 @@ public function testSetInitialPlace()
      */
     public function testSetInitialPlaceAndPlaceIsNotDefined()
     {
-        $definition = new Definition(array(), array(), 'd');
+        $definition = new Definition([], [], 'd');
     }
 
     public function testAddTransition()
@@ -40,7 +40,7 @@ public function testAddTransition()
         $places = range('a', 'b');
 
         $transition = new Transition('name', $places[0], $places[1]);
-        $definition = new Definition($places, array($transition));
+        $definition = new Definition($places, [$transition]);
 
         $this->assertCount(1, $definition->getTransitions());
         $this->assertSame($transition, $definition->getTransitions()[0]);
@@ -54,7 +54,7 @@ public function testAddTransitionAndFromPlaceIsNotDefined()
     {
         $places = range('a', 'b');
 
-        new Definition($places, array(new Transition('name', 'c', $places[1])));
+        new Definition($places, [new Transition('name', 'c', $places[1])]);
     }
 
     /**
@@ -65,6 +65,6 @@ public function testAddTransitionAndToPlaceIsNotDefined()
     {
         $places = range('a', 'b');
 
-        new Definition($places, array(new Transition('name', $places[0], 'c')));
+        new Definition($places, [new Transition('name', $places[0], 'c')]);
     }
 }
diff --git a/src/Symfony/Component/Workflow/Tests/Dumper/PlantUmlDumperTest.php b/src/Symfony/Component/Workflow/Tests/Dumper/PlantUmlDumperTest.php
index 846941525512..c8c285bdab3e 100644
--- a/src/Symfony/Component/Workflow/Tests/Dumper/PlantUmlDumperTest.php
+++ b/src/Symfony/Component/Workflow/Tests/Dumper/PlantUmlDumperTest.php
@@ -25,7 +25,7 @@ class PlantUmlDumperTest extends TestCase
     public function testDumpWorkflowWithoutMarking($definition, $marking, $expectedFileName, $title)
     {
         $dumper = new PlantUmlDumper(PlantUmlDumper::WORKFLOW_TRANSITION);
-        $dump = $dumper->dump($definition, $marking, array('title' => $title));
+        $dump = $dumper->dump($definition, $marking, ['title' => $title]);
         // handle windows, and avoid to create more fixtures
         $dump = str_replace(PHP_EOL, "\n", $dump.PHP_EOL);
         $file = $this->getFixturePath($expectedFileName, PlantUmlDumper::WORKFLOW_TRANSITION);
@@ -34,12 +34,12 @@ public function testDumpWorkflowWithoutMarking($definition, $marking, $expectedF
 
     public function provideWorkflowDefinitionWithoutMarking()
     {
-        yield array($this->createSimpleWorkflowDefinition(), null, 'simple-workflow-nomarking', 'SimpleDiagram');
-        yield array($this->createComplexWorkflowDefinition(), null, 'complex-workflow-nomarking', 'ComplexDiagram');
-        $marking = new Marking(array('b' => 1));
-        yield array($this->createSimpleWorkflowDefinition(), $marking, 'simple-workflow-marking', 'SimpleDiagram');
-        $marking = new Marking(array('c' => 1, 'e' => 1));
-        yield array($this->createComplexWorkflowDefinition(), $marking, 'complex-workflow-marking', 'ComplexDiagram');
+        yield [$this->createSimpleWorkflowDefinition(), null, 'simple-workflow-nomarking', 'SimpleDiagram'];
+        yield [$this->createComplexWorkflowDefinition(), null, 'complex-workflow-nomarking', 'ComplexDiagram'];
+        $marking = new Marking(['b' => 1]);
+        yield [$this->createSimpleWorkflowDefinition(), $marking, 'simple-workflow-marking', 'SimpleDiagram'];
+        $marking = new Marking(['c' => 1, 'e' => 1]);
+        yield [$this->createComplexWorkflowDefinition(), $marking, 'complex-workflow-marking', 'ComplexDiagram'];
     }
 
     /**
@@ -48,7 +48,7 @@ public function provideWorkflowDefinitionWithoutMarking()
     public function testDumpStateMachineWithoutMarking($definition, $marking, $expectedFileName, $title)
     {
         $dumper = new PlantUmlDumper(PlantUmlDumper::STATEMACHINE_TRANSITION);
-        $dump = $dumper->dump($definition, $marking, array('title' => $title));
+        $dump = $dumper->dump($definition, $marking, ['title' => $title]);
         // handle windows, and avoid to create more fixtures
         $dump = str_replace(PHP_EOL, "\n", $dump.PHP_EOL);
         $file = $this->getFixturePath($expectedFileName, PlantUmlDumper::STATEMACHINE_TRANSITION);
@@ -57,9 +57,9 @@ public function testDumpStateMachineWithoutMarking($definition, $marking, $expec
 
     public function provideStateMachineDefinitionWithoutMarking()
     {
-        yield array($this->createComplexStateMachineDefinition(), null, 'complex-state-machine-nomarking', 'SimpleDiagram');
-        $marking = new Marking(array('c' => 1, 'e' => 1));
-        yield array($this->createComplexStateMachineDefinition(), $marking, 'complex-state-machine-marking', 'SimpleDiagram');
+        yield [$this->createComplexStateMachineDefinition(), null, 'complex-state-machine-nomarking', 'SimpleDiagram'];
+        $marking = new Marking(['c' => 1, 'e' => 1]);
+        yield [$this->createComplexStateMachineDefinition(), $marking, 'complex-state-machine-marking', 'SimpleDiagram'];
     }
 
     private function getFixturePath($name, $transitionType)
diff --git a/src/Symfony/Component/Workflow/Tests/Metadata/InMemoryMetadataStoreTest.php b/src/Symfony/Component/Workflow/Tests/Metadata/InMemoryMetadataStoreTest.php
index f153d545c927..0ce8d9d5d8ad 100644
--- a/src/Symfony/Component/Workflow/Tests/Metadata/InMemoryMetadataStoreTest.php
+++ b/src/Symfony/Component/Workflow/Tests/Metadata/InMemoryMetadataStoreTest.php
@@ -16,19 +16,19 @@ class InMemoryMetadataStoreTest extends TestCase
 
     protected function setUp()
     {
-        $workflowMetadata = array(
+        $workflowMetadata = [
             'title' => 'workflow title',
-        );
-        $placesMetadata = array(
-            'place_a' => array(
+        ];
+        $placesMetadata = [
+            'place_a' => [
                 'title' => 'place_a title',
-            ),
-        );
+            ],
+        ];
         $transitionsMetadata = new \SplObjectStorage();
-        $this->transition = new Transition('transition_1', array(), array());
-        $transitionsMetadata[$this->transition] = array(
+        $this->transition = new Transition('transition_1', [], []);
+        $transitionsMetadata[$this->transition] = [
             'title' => 'transition_1 title',
-        );
+        ];
 
         $this->store = new InMemoryMetadataStore($workflowMetadata, $placesMetadata, $transitionsMetadata);
     }
@@ -42,7 +42,7 @@ public function testGetWorkflowMetadata()
     public function testGetUnexistingPlaceMetadata()
     {
         $metadataBag = $this->store->getPlaceMetadata('place_b');
-        $this->assertSame(array(), $metadataBag);
+        $this->assertSame([], $metadataBag);
     }
 
     public function testGetExistingPlaceMetadata()
@@ -53,8 +53,8 @@ public function testGetExistingPlaceMetadata()
 
     public function testGetUnexistingTransitionMetadata()
     {
-        $metadataBag = $this->store->getTransitionMetadata(new Transition('transition_2', array(), array()));
-        $this->assertSame(array(), $metadataBag);
+        $metadataBag = $this->store->getTransitionMetadata(new Transition('transition_2', [], []));
+        $this->assertSame([], $metadataBag);
     }
 
     public function testGetExistingTransitionMetadata()
@@ -72,7 +72,7 @@ public function testGetMetadata()
         $this->assertNull($this->store->getMetadata('description', 'place_b'));
         $this->assertSame('transition_1 title', $this->store->getMetadata('title', $this->transition));
         $this->assertNull($this->store->getMetadata('description', $this->transition));
-        $this->assertNull($this->store->getMetadata('description', new Transition('transition_2', array(), array())));
+        $this->assertNull($this->store->getMetadata('description', new Transition('transition_2', [], [])));
     }
 
     /**
diff --git a/src/Symfony/Component/Workflow/Tests/RegistryTest.php b/src/Symfony/Component/Workflow/Tests/RegistryTest.php
index 6d30d2f7e21d..867046f7c5db 100644
--- a/src/Symfony/Component/Workflow/Tests/RegistryTest.php
+++ b/src/Symfony/Component/Workflow/Tests/RegistryTest.php
@@ -19,9 +19,9 @@ protected function setUp()
     {
         $this->registry = new Registry();
 
-        $this->registry->addWorkflow(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), $this->createWorkflowSupportStrategy(Subject1::class));
-        $this->registry->addWorkflow(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow2'), $this->createWorkflowSupportStrategy(Subject2::class));
-        $this->registry->addWorkflow(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow3'), $this->createWorkflowSupportStrategy(Subject2::class));
+        $this->registry->addWorkflow(new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), $this->createWorkflowSupportStrategy(Subject1::class));
+        $this->registry->addWorkflow(new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow2'), $this->createWorkflowSupportStrategy(Subject2::class));
+        $this->registry->addWorkflow(new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow3'), $this->createWorkflowSupportStrategy(Subject2::class));
     }
 
     protected function tearDown()
@@ -37,7 +37,7 @@ public function testAddIsDeprecated()
     {
         $registry = new Registry();
 
-        $registry->add($w = new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), $this->createSupportStrategy(Subject1::class));
+        $registry->add($w = new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), $this->createSupportStrategy(Subject1::class));
 
         $workflow = $registry->get(new Subject1());
         $this->assertInstanceOf(Workflow::class, $workflow);
diff --git a/src/Symfony/Component/Workflow/Tests/WorkflowTest.php b/src/Symfony/Component/Workflow/Tests/WorkflowTest.php
index 75ceb1f108c1..9283683fee18 100644
--- a/src/Symfony/Component/Workflow/Tests/WorkflowTest.php
+++ b/src/Symfony/Component/Workflow/Tests/WorkflowTest.php
@@ -27,7 +27,7 @@ public function testGetMarkingWithInvalidStoreReturn()
     {
         $subject = new \stdClass();
         $subject->marking = null;
-        $workflow = new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock());
+        $workflow = new Workflow(new Definition([], []), $this->getMockBuilder(MarkingStoreInterface::class)->getMock());
 
         $workflow->getMarking($subject);
     }
@@ -40,7 +40,7 @@ public function testGetMarkingWithEmptyDefinition()
     {
         $subject = new \stdClass();
         $subject->marking = null;
-        $workflow = new Workflow(new Definition(array(), array()), new MultipleStateMarkingStore());
+        $workflow = new Workflow(new Definition([], []), new MultipleStateMarkingStore());
 
         $workflow->getMarking($subject);
     }
@@ -52,8 +52,8 @@ public function testGetMarkingWithEmptyDefinition()
     public function testGetMarkingWithImpossiblePlace()
     {
         $subject = new \stdClass();
-        $subject->marking = array('nope' => 1);
-        $workflow = new Workflow(new Definition(array(), array()), new MultipleStateMarkingStore());
+        $subject->marking = ['nope' => 1];
+        $workflow = new Workflow(new Definition([], []), new MultipleStateMarkingStore());
 
         $workflow->getMarking($subject);
     }
@@ -69,7 +69,7 @@ public function testGetMarkingWithEmptyInitialMarking()
 
         $this->assertInstanceOf(Marking::class, $marking);
         $this->assertTrue($marking->has('a'));
-        $this->assertSame(array('a' => 1), $subject->marking);
+        $this->assertSame(['a' => 1], $subject->marking);
     }
 
     public function testGetMarkingWithExistingMarking()
@@ -77,7 +77,7 @@ public function testGetMarkingWithExistingMarking()
         $definition = $this->createComplexWorkflowDefinition();
         $subject = new \stdClass();
         $subject->marking = null;
-        $subject->marking = array('b' => 1, 'c' => 1);
+        $subject->marking = ['b' => 1, 'c' => 1];
         $workflow = new Workflow($definition, new MultipleStateMarkingStore());
 
         $marking = $workflow->getMarking($subject);
@@ -107,19 +107,19 @@ public function testCan()
         $this->assertTrue($workflow->can($subject, 't1'));
         $this->assertFalse($workflow->can($subject, 't2'));
 
-        $subject->marking = array('b' => 1);
+        $subject->marking = ['b' => 1];
 
         $this->assertFalse($workflow->can($subject, 't1'));
         // In a workflow net, all "from" places should contain a token to enable
         // the transition.
         $this->assertFalse($workflow->can($subject, 't2'));
 
-        $subject->marking = array('b' => 1, 'c' => 1);
+        $subject->marking = ['b' => 1, 'c' => 1];
 
         $this->assertFalse($workflow->can($subject, 't1'));
         $this->assertTrue($workflow->can($subject, 't2'));
 
-        $subject->marking = array('f' => 1);
+        $subject->marking = ['f' => 1];
 
         $this->assertFalse($workflow->can($subject, 't5'));
         $this->assertTrue($workflow->can($subject, 't6'));
@@ -145,7 +145,7 @@ public function testCanDoesNotTriggerGuardEventsForNotEnabledTransitions()
         $subject = new \stdClass();
         $subject->marking = null;
 
-        $dispatchedEvents = array();
+        $dispatchedEvents = [];
         $eventDispatcher = new EventDispatcher();
 
         $workflow = new Workflow($definition, new MultipleStateMarkingStore(), $eventDispatcher, 'workflow_name');
@@ -161,7 +161,7 @@ public function testCanDoesNotTriggerGuardEventsForNotEnabledTransitions()
 
         $workflow->can($subject, 't3');
 
-        $this->assertSame(array('workflow_name.guard.t3'), $dispatchedEvents);
+        $this->assertSame(['workflow_name.guard.t3'], $dispatchedEvents);
     }
 
     public function testCanWithSameNameTransition()
@@ -175,7 +175,7 @@ public function testCanWithSameNameTransition()
         $this->assertFalse($workflow->can($subject, 'b_to_c'));
         $this->assertFalse($workflow->can($subject, 'to_a'));
 
-        $subject->marking = array('b' => 1);
+        $subject->marking = ['b' => 1];
         $this->assertFalse($workflow->can($subject, 'a_to_bc'));
         $this->assertTrue($workflow->can($subject, 'b_to_c'));
         $this->assertTrue($workflow->can($subject, 'to_a'));
@@ -205,17 +205,17 @@ public function testBuildTransitionBlockerList()
         $this->assertTrue($workflow->buildTransitionBlockerList($subject, 't1')->isEmpty());
         $this->assertFalse($workflow->buildTransitionBlockerList($subject, 't2')->isEmpty());
 
-        $subject->marking = array('b' => 1);
+        $subject->marking = ['b' => 1];
 
         $this->assertFalse($workflow->buildTransitionBlockerList($subject, 't1')->isEmpty());
         $this->assertFalse($workflow->buildTransitionBlockerList($subject, 't2')->isEmpty());
 
-        $subject->marking = array('b' => 1, 'c' => 1);
+        $subject->marking = ['b' => 1, 'c' => 1];
 
         $this->assertFalse($workflow->buildTransitionBlockerList($subject, 't1')->isEmpty());
         $this->assertTrue($workflow->buildTransitionBlockerList($subject, 't2')->isEmpty());
 
-        $subject->marking = array('f' => 1);
+        $subject->marking = ['f' => 1];
 
         $this->assertFalse($workflow->buildTransitionBlockerList($subject, 't5')->isEmpty());
         $this->assertTrue($workflow->buildTransitionBlockerList($subject, 't6')->isEmpty());
@@ -354,10 +354,10 @@ public function testApplyWithSameNameTransition()
     public function testApplyWithSameNameTransition2()
     {
         $subject = new \stdClass();
-        $subject->marking = array('a' => 1, 'b' => 1);
+        $subject->marking = ['a' => 1, 'b' => 1];
 
         $places = range('a', 'd');
-        $transitions = array();
+        $transitions = [];
         $transitions[] = new Transition('t', 'a', 'c');
         $transitions[] = new Transition('t', 'b', 'd');
         $definition = new Definition($places, $transitions);
@@ -374,10 +374,10 @@ public function testApplyWithSameNameTransition2()
     public function testApplyWithSameNameTransition3()
     {
         $subject = new \stdClass();
-        $subject->marking = array('a' => 1);
+        $subject->marking = ['a' => 1];
 
         $places = range('a', 'd');
-        $transitions = array();
+        $transitions = [];
         $transitions[] = new Transition('t', 'a', 'b');
         $transitions[] = new Transition('t', 'b', 'c');
         $transitions[] = new Transition('t', 'c', 'd');
@@ -398,7 +398,7 @@ public function testApplyWithEventDispatcher()
         $eventDispatcher = new EventDispatcherMock();
         $workflow = new Workflow($definition, new MultipleStateMarkingStore(), $eventDispatcher, 'workflow_name');
 
-        $eventNameExpected = array(
+        $eventNameExpected = [
             'workflow.guard',
             'workflow.workflow_name.guard',
             'workflow.workflow_name.guard.t1',
@@ -426,7 +426,7 @@ public function testApplyWithEventDispatcher()
             'workflow.workflow_name.guard',
             'workflow.workflow_name.guard.t2',
             'workflow.workflow_name.announce.t2',
-        );
+        ];
 
         $marking = $workflow->apply($subject, 't1');
 
@@ -446,14 +446,14 @@ public function testEventName()
             $this->assertEquals($name, $event->getWorkflowName());
         };
 
-        $eventNames = array(
+        $eventNames = [
             'workflow.guard',
             'workflow.leave',
             'workflow.transition',
             'workflow.enter',
             'workflow.entered',
             'workflow.announce',
-        );
+        ];
 
         foreach ($eventNames as $eventName) {
             $dispatcher->addListener($eventName, $assertWorkflowName);
@@ -464,20 +464,20 @@ public function testEventName()
 
     public function testMarkingStateOnApplyWithEventDispatcher()
     {
-        $definition = new Definition(range('a', 'f'), array(new Transition('t', range('a', 'c'), range('d', 'f'))));
+        $definition = new Definition(range('a', 'f'), [new Transition('t', range('a', 'c'), range('d', 'f'))]);
 
         $subject = new \stdClass();
-        $subject->marking = array('a' => 1, 'b' => 1, 'c' => 1);
+        $subject->marking = ['a' => 1, 'b' => 1, 'c' => 1];
 
         $dispatcher = new EventDispatcher();
 
         $workflow = new Workflow($definition, new MultipleStateMarkingStore(), $dispatcher, 'test');
 
         $assertInitialState = function (Event $event) {
-            $this->assertEquals(new Marking(array('a' => 1, 'b' => 1, 'c' => 1)), $event->getMarking());
+            $this->assertEquals(new Marking(['a' => 1, 'b' => 1, 'c' => 1]), $event->getMarking());
         };
         $assertTransitionState = function (Event $event) {
-            $this->assertEquals(new Marking(array()), $event->getMarking());
+            $this->assertEquals(new Marking([]), $event->getMarking());
         };
 
         $dispatcher->addListener('workflow.leave', $assertInitialState);
@@ -510,13 +510,13 @@ public function testGetEnabledTransitions()
 
         $this->assertEmpty($workflow->getEnabledTransitions($subject));
 
-        $subject->marking = array('d' => 1);
+        $subject->marking = ['d' => 1];
         $transitions = $workflow->getEnabledTransitions($subject);
         $this->assertCount(2, $transitions);
         $this->assertSame('t3', $transitions[0]->getName());
         $this->assertSame('t4', $transitions[1]->getName());
 
-        $subject->marking = array('c' => 1, 'e' => 1);
+        $subject->marking = ['c' => 1, 'e' => 1];
         $transitions = $workflow->getEnabledTransitions($subject);
         $this->assertCount(1, $transitions);
         $this->assertSame('t5', $transitions[0]->getName());
@@ -533,7 +533,7 @@ public function testGetEnabledTransitionsWithSameNameTransition()
         $this->assertCount(1, $transitions);
         $this->assertSame('a_to_bc', $transitions[0]->getName());
 
-        $subject->marking = array('b' => 1, 'c' => 1);
+        $subject->marking = ['b' => 1, 'c' => 1];
         $transitions = $workflow->getEnabledTransitions($subject);
         $this->assertCount(3, $transitions);
         $this->assertSame('b_to_c', $transitions[0]->getName());
@@ -544,7 +544,7 @@ public function testGetEnabledTransitionsWithSameNameTransition()
 
 class EventDispatcherMock implements \Symfony\Component\EventDispatcher\EventDispatcherInterface
 {
-    public $dispatchedEvents = array();
+    public $dispatchedEvents = [];
 
     public function dispatch($eventName, \Symfony\Component\EventDispatcher\Event $event = null)
     {
diff --git a/src/Symfony/Component/Workflow/TransitionBlocker.php b/src/Symfony/Component/Workflow/TransitionBlocker.php
index d5307038a667..81fa1a413001 100644
--- a/src/Symfony/Component/Workflow/TransitionBlocker.php
+++ b/src/Symfony/Component/Workflow/TransitionBlocker.php
@@ -30,7 +30,7 @@ final class TransitionBlocker
      *                           blocked the transition. E.g. for a condition "distance must be larger than
      *                           5 miles", you might want to pass around the value of 5.
      */
-    public function __construct(string $message, string $code, array $parameters = array())
+    public function __construct(string $message, string $code, array $parameters = [])
     {
         $this->message = $message;
         $this->code = $code;
@@ -47,9 +47,9 @@ public function __construct(string $message, string $code, array $parameters = a
      */
     public static function createBlockedByMarking(Marking $marking): self
     {
-        return new static('The marking does not enable the transition.', self::BLOCKED_BY_MARKING, array(
+        return new static('The marking does not enable the transition.', self::BLOCKED_BY_MARKING, [
             'marking' => $marking,
-        ));
+        ]);
     }
 
     /**
@@ -58,9 +58,9 @@ public static function createBlockedByMarking(Marking $marking): self
      */
     public static function createBlockedByExpressionGuardListener(string $expression): self
     {
-        return new static('The expression blocks the transition.', self::BLOCKED_BY_EXPRESSION_GUARD_LISTENER, array(
+        return new static('The expression blocks the transition.', self::BLOCKED_BY_EXPRESSION_GUARD_LISTENER, [
             'expression' => $expression,
-        ));
+        ]);
     }
 
     /**
diff --git a/src/Symfony/Component/Workflow/TransitionBlockerList.php b/src/Symfony/Component/Workflow/TransitionBlockerList.php
index b7ef5a157c96..8569b28fea36 100644
--- a/src/Symfony/Component/Workflow/TransitionBlockerList.php
+++ b/src/Symfony/Component/Workflow/TransitionBlockerList.php
@@ -23,9 +23,9 @@ final class TransitionBlockerList implements \IteratorAggregate, \Countable
     /**
      * @param TransitionBlocker[] $blockers
      */
-    public function __construct(array $blockers = array())
+    public function __construct(array $blockers = [])
     {
-        $this->blockers = array();
+        $this->blockers = [];
 
         foreach ($blockers as $blocker) {
             $this->add($blocker);
@@ -50,7 +50,7 @@ public function has(string $code): bool
 
     public function clear(): void
     {
-        $this->blockers = array();
+        $this->blockers = [];
     }
 
     public function isEmpty(): bool
diff --git a/src/Symfony/Component/Workflow/Workflow.php b/src/Symfony/Component/Workflow/Workflow.php
index 11d82daa01c7..3e9fbb5aa91f 100644
--- a/src/Symfony/Component/Workflow/Workflow.php
+++ b/src/Symfony/Component/Workflow/Workflow.php
@@ -147,7 +147,7 @@ public function apply($subject, $transitionName)
 
         $transitionBlockerList = null;
         $applied = false;
-        $approvedTransitionQueue = array();
+        $approvedTransitionQueue = [];
 
         foreach ($this->definition->getTransitions() as $transition) {
             if ($transition->getName() !== $transitionName) {
@@ -195,7 +195,7 @@ public function apply($subject, $transitionName)
      */
     public function getEnabledTransitions($subject)
     {
-        $enabledTransitions = array();
+        $enabledTransitions = [];
         $marking = $this->getMarking($subject);
 
         foreach ($this->definition->getTransitions() as $transition) {
@@ -244,9 +244,9 @@ private function buildTransitionBlockerListForTransition($subject, Marking $mark
     {
         foreach ($transition->getFroms() as $place) {
             if (!$marking->has($place)) {
-                return new TransitionBlockerList(array(
+                return new TransitionBlockerList([
                     TransitionBlocker::createBlockedByMarking($marking),
-                ));
+                ]);
             }
         }
 
diff --git a/src/Symfony/Component/Yaml/Inline.php b/src/Symfony/Component/Yaml/Inline.php
index ae8b17a81d4b..091cf857bfae 100644
--- a/src/Symfony/Component/Yaml/Inline.php
+++ b/src/Symfony/Component/Yaml/Inline.php
@@ -63,7 +63,7 @@ public static function initialize($flags, $parsedLineNumber = null, $parsedFilen
      *
      * @throws ParseException
      */
-    public static function parse(string $value = null, int $flags = 0, array $references = array())
+    public static function parse(string $value = null, int $flags = 0, array $references = [])
     {
         self::initialize($flags);
 
@@ -142,7 +142,7 @@ public static function dump($value, int $flags = 0): string
                 }
 
                 if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \stdClass || $value instanceof \ArrayObject)) {
-                    $output = array();
+                    $output = [];
 
                     foreach ($value as $key => $val) {
                         $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
@@ -239,7 +239,7 @@ private static function dumpArray(array $value, int $flags): string
     {
         // array
         if (($value || Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE & $flags) && !self::isHash($value)) {
-            $output = array();
+            $output = [];
             foreach ($value as $val) {
                 $output[] = self::dump($val, $flags);
             }
@@ -248,7 +248,7 @@ private static function dumpArray(array $value, int $flags): string
         }
 
         // hash
-        $output = array();
+        $output = [];
         foreach ($value as $key => $val) {
             $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
         }
@@ -263,9 +263,9 @@ private static function dumpArray(array $value, int $flags): string
      *
      * @throws ParseException When malformed inline YAML string is parsed
      */
-    public static function parseScalar(string $scalar, int $flags = 0, array $delimiters = null, int &$i = 0, bool $evaluate = true, array $references = array())
+    public static function parseScalar(string $scalar, int $flags = 0, array $delimiters = null, int &$i = 0, bool $evaluate = true, array $references = [])
     {
-        if (\in_array($scalar[$i], array('"', "'"))) {
+        if (\in_array($scalar[$i], ['"', "'"])) {
             // quoted scalar
             $output = self::parseQuotedScalar($scalar, $i);
 
@@ -339,9 +339,9 @@ private static function parseQuotedScalar(string $scalar, int &$i): string
      *
      * @throws ParseException When malformed inline YAML string is parsed
      */
-    private static function parseSequence(string $sequence, int $flags, int &$i = 0, array $references = array()): array
+    private static function parseSequence(string $sequence, int $flags, int &$i = 0, array $references = []): array
     {
-        $output = array();
+        $output = [];
         $len = \strlen($sequence);
         ++$i;
 
@@ -367,8 +367,8 @@ private static function parseSequence(string $sequence, int $flags, int &$i = 0,
                     $value = self::parseMapping($sequence, $flags, $i, $references);
                     break;
                 default:
-                    $isQuoted = \in_array($sequence[$i], array('"', "'"));
-                    $value = self::parseScalar($sequence, $flags, array(',', ']'), $i, null === $tag, $references);
+                    $isQuoted = \in_array($sequence[$i], ['"', "'"]);
+                    $value = self::parseScalar($sequence, $flags, [',', ']'], $i, null === $tag, $references);
 
                     // the value can be an array if a reference has been resolved to an array var
                     if (\is_string($value) && !$isQuoted && false !== strpos($value, ': ')) {
@@ -403,9 +403,9 @@ private static function parseSequence(string $sequence, int $flags, int &$i = 0,
      *
      * @throws ParseException When malformed inline YAML string is parsed
      */
-    private static function parseMapping(string $mapping, int $flags, int &$i = 0, array $references = array())
+    private static function parseMapping(string $mapping, int $flags, int &$i = 0, array $references = [])
     {
-        $output = array();
+        $output = [];
         $len = \strlen($mapping);
         ++$i;
         $allowOverwrite = false;
@@ -427,8 +427,8 @@ private static function parseMapping(string $mapping, int $flags, int &$i = 0, a
 
             // key
             $offsetBeforeKeyParsing = $i;
-            $isKeyQuoted = \in_array($mapping[$i], array('"', "'"), true);
-            $key = self::parseScalar($mapping, $flags, array(':', ' '), $i, false, array());
+            $isKeyQuoted = \in_array($mapping[$i], ['"', "'"], true);
+            $key = self::parseScalar($mapping, $flags, [':', ' '], $i, false, []);
 
             if ($offsetBeforeKeyParsing === $i) {
                 throw new ParseException('Missing mapping key.', self::$parsedLineNumber + 1, $mapping);
@@ -446,7 +446,7 @@ private static function parseMapping(string $mapping, int $flags, int &$i = 0, a
                 }
             }
 
-            if (!$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], array(' ', ',', '[', ']', '{', '}'), true))) {
+            if (!$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], [' ', ',', '[', ']', '{', '}'], true))) {
                 throw new ParseException('Colons must be followed by a space or an indication character (i.e. " ", ",", "[", "]", "{", "}").', self::$parsedLineNumber + 1, $mapping);
             }
 
@@ -504,7 +504,7 @@ private static function parseMapping(string $mapping, int $flags, int &$i = 0, a
                         }
                         break;
                     default:
-                        $value = self::parseScalar($mapping, $flags, array(',', '}'), $i, null === $tag, $references);
+                        $value = self::parseScalar($mapping, $flags, [',', '}'], $i, null === $tag, $references);
                         // Spec: Keys MUST be unique; first one wins.
                         // Parser cannot abort this mapping earlier, since lines
                         // are processed sequentially.
@@ -538,7 +538,7 @@ private static function parseMapping(string $mapping, int $flags, int &$i = 0, a
      *
      * @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
      */
-    private static function evaluateScalar(string $scalar, int $flags, array $references = array())
+    private static function evaluateScalar(string $scalar, int $flags, array $references = [])
     {
         $scalar = trim($scalar);
         $scalarLower = strtolower($scalar);
@@ -670,7 +670,7 @@ private static function parseTag(string $value, int &$i, int $flags): ?string
         $nextOffset += strspn($value, ' ', $nextOffset);
 
         // Is followed by a scalar and is a built-in tag
-        if ($tag && (!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], array('[', '{'), true)) && ('!' === $tag[0] || 'str' === $tag || 'php/const' === $tag || 'php/object' === $tag)) {
+        if ($tag && (!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], ['[', '{'], true)) && ('!' === $tag[0] || 'str' === $tag || 'php/const' === $tag || 'php/object' === $tag)) {
             // Manage in {@link self::evaluateScalar()}
             return null;
         }
diff --git a/src/Symfony/Component/Yaml/Parser.php b/src/Symfony/Component/Yaml/Parser.php
index 0bbc6aefd049..8806fb46d261 100644
--- a/src/Symfony/Component/Yaml/Parser.php
+++ b/src/Symfony/Component/Yaml/Parser.php
@@ -29,13 +29,13 @@ class Parser
     private $filename;
     private $offset = 0;
     private $totalNumberOfLines;
-    private $lines = array();
+    private $lines = [];
     private $currentLineNb = -1;
     private $currentLine = '';
-    private $refs = array();
-    private $skippedLineNumbers = array();
-    private $locallySkippedLineNumbers = array();
-    private $refsBeingParsed = array();
+    private $refs = [];
+    private $skippedLineNumbers = [];
+    private $locallySkippedLineNumbers = [];
+    private $refsBeingParsed = [];
 
     /**
      * Parses a YAML file into a PHP value.
@@ -82,7 +82,7 @@ public function parse(string $value, int $flags = 0)
             throw new ParseException('The YAML value does not appear to be valid UTF-8.', -1, null, $this->filename);
         }
 
-        $this->refs = array();
+        $this->refs = [];
 
         $mbEncoding = null;
         $data = null;
@@ -98,11 +98,11 @@ public function parse(string $value, int $flags = 0)
             if (null !== $mbEncoding) {
                 mb_internal_encoding($mbEncoding);
             }
-            $this->lines = array();
+            $this->lines = [];
             $this->currentLine = '';
-            $this->refs = array();
-            $this->skippedLineNumbers = array();
-            $this->locallySkippedLineNumbers = array();
+            $this->refs = [];
+            $this->skippedLineNumbers = [];
+            $this->locallySkippedLineNumbers = [];
         }
 
         return $data;
@@ -124,7 +124,7 @@ private function doParse(string $value, int $flags)
         $this->currentLine = '';
         $value = $this->cleanup($value);
         $this->lines = explode("\n", $value);
-        $this->locallySkippedLineNumbers = array();
+        $this->locallySkippedLineNumbers = [];
 
         if (null === $this->totalNumberOfLines) {
             $this->totalNumberOfLines = \count($this->lines);
@@ -134,7 +134,7 @@ private function doParse(string $value, int $flags)
             return null;
         }
 
-        $data = array();
+        $data = [];
         $context = null;
         $allowOverwrite = false;
 
@@ -207,7 +207,7 @@ private function doParse(string $value, int $flags)
                 }
             } elseif (
                 self::preg_match('#^(?P<key>(?:![^\s]++\s++)?(?:'.Inline::REGEX_QUOTED_STRING.'|(?:!?!php/const:)?[^ \'"\[\{!].*?)) *\:(\s++(?P<value>.+))?$#u', rtrim($this->currentLine), $values)
-                && (false === strpos($values['key'], ' #') || \in_array($values['key'][0], array('"', "'")))
+                && (false === strpos($values['key'], ' #') || \in_array($values['key'][0], ['"', "'"]))
             ) {
                 if ($context && 'sequence' == $context) {
                     throw new ParseException('You cannot define a mapping item when in a sequence', $this->currentLineNb + 1, $this->currentLine, $this->filename);
@@ -546,7 +546,7 @@ private function getNextEmbedBlock(int $indentation = null, bool $inSequence = f
             $newIndent = $indentation;
         }
 
-        $data = array();
+        $data = [];
         if ($this->getCurrentLineIndentation() >= $newIndent) {
             $data[] = substr($this->currentLine, $newIndent);
         } elseif ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) {
@@ -683,7 +683,7 @@ private function parseValue(string $value, int $flags, string $context)
                 return Inline::parse($value, $flags, $this->refs);
             }
 
-            $lines = array();
+            $lines = [];
 
             while ($this->moveToNextLine()) {
                 // unquoted strings end before the first unindented line
@@ -748,7 +748,7 @@ private function parseBlockScalar(string $style, string $chomping = '', int $ind
         }
 
         $isCurrentLineBlank = $this->isCurrentLineBlank();
-        $blockLines = array();
+        $blockLines = [];
 
         // leading blank lines are consumed before determining indentation
         while ($notEOF && $isCurrentLineBlank) {
@@ -920,7 +920,7 @@ private function isCurrentLineLastLineInDocument(): bool
      */
     private function cleanup(string $value): string
     {
-        $value = str_replace(array("\r\n", "\r"), "\n", $value);
+        $value = str_replace(["\r\n", "\r"], "\n", $value);
 
         // strip YAML header
         $count = 0;
diff --git a/src/Symfony/Component/Yaml/Tests/DumperTest.php b/src/Symfony/Component/Yaml/Tests/DumperTest.php
index 85dfd5b956cf..d8d544aa2812 100644
--- a/src/Symfony/Component/Yaml/Tests/DumperTest.php
+++ b/src/Symfony/Component/Yaml/Tests/DumperTest.php
@@ -22,20 +22,20 @@ class DumperTest extends TestCase
     protected $dumper;
     protected $path;
 
-    protected $array = array(
+    protected $array = [
         '' => 'bar',
         'foo' => '#bar',
-        'foo\'bar' => array(),
-        'bar' => array(1, 'foo'),
-        'foobar' => array(
+        'foo\'bar' => [],
+        'bar' => [1, 'foo'],
+        'foobar' => [
             'foo' => 'bar',
-            'bar' => array(1, 'foo'),
-            'foobar' => array(
+            'bar' => [1, 'foo'],
+            'foobar' => [
                 'foo' => 'bar',
-                'bar' => array(1, 'foo'),
-            ),
-        ),
-    );
+                'bar' => [1, 'foo'],
+            ],
+        ],
+    ];
 
     protected function setUp()
     {
@@ -179,14 +179,14 @@ public function testInlineLevel()
 
     public function testObjectSupportEnabled()
     {
-        $dump = $this->dumper->dump(array('foo' => new A(), 'bar' => 1), 0, 0, Yaml::DUMP_OBJECT);
+        $dump = $this->dumper->dump(['foo' => new A(), 'bar' => 1], 0, 0, Yaml::DUMP_OBJECT);
 
         $this->assertEquals('{ foo: !php/object \'O:30:"Symfony\Component\Yaml\Tests\A":1:{s:1:"a";s:3:"foo";}\', bar: 1 }', $dump, '->dump() is able to dump objects');
     }
 
     public function testObjectSupportDisabledButNoExceptions()
     {
-        $dump = $this->dumper->dump(array('foo' => new A(), 'bar' => 1));
+        $dump = $this->dumper->dump(['foo' => new A(), 'bar' => 1]);
 
         $this->assertEquals('{ foo: null, bar: 1 }', $dump, '->dump() does not dump objects when disabled');
     }
@@ -196,7 +196,7 @@ public function testObjectSupportDisabledButNoExceptions()
      */
     public function testObjectSupportDisabledWithExceptions()
     {
-        $this->dumper->dump(array('foo' => new A(), 'bar' => 1), 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE);
+        $this->dumper->dump(['foo' => new A(), 'bar' => 1], 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE);
     }
 
     /**
@@ -209,27 +209,27 @@ public function testEscapedEscapeSequencesInQuotedScalar($input, $expected)
 
     public function getEscapeSequences()
     {
-        return array(
-            'empty string' => array('', "''"),
-            'null' => array("\x0", '"\\0"'),
-            'bell' => array("\x7", '"\\a"'),
-            'backspace' => array("\x8", '"\\b"'),
-            'horizontal-tab' => array("\t", '"\\t"'),
-            'line-feed' => array("\n", '"\\n"'),
-            'vertical-tab' => array("\v", '"\\v"'),
-            'form-feed' => array("\xC", '"\\f"'),
-            'carriage-return' => array("\r", '"\\r"'),
-            'escape' => array("\x1B", '"\\e"'),
-            'space' => array(' ', "' '"),
-            'double-quote' => array('"', "'\"'"),
-            'slash' => array('/', '/'),
-            'backslash' => array('\\', '\\'),
-            'next-line' => array("\xC2\x85", '"\\N"'),
-            'non-breaking-space' => array("\xc2\xa0", '"\\_"'),
-            'line-separator' => array("\xE2\x80\xA8", '"\\L"'),
-            'paragraph-separator' => array("\xE2\x80\xA9", '"\\P"'),
-            'colon' => array(':', "':'"),
-        );
+        return [
+            'empty string' => ['', "''"],
+            'null' => ["\x0", '"\\0"'],
+            'bell' => ["\x7", '"\\a"'],
+            'backspace' => ["\x8", '"\\b"'],
+            'horizontal-tab' => ["\t", '"\\t"'],
+            'line-feed' => ["\n", '"\\n"'],
+            'vertical-tab' => ["\v", '"\\v"'],
+            'form-feed' => ["\xC", '"\\f"'],
+            'carriage-return' => ["\r", '"\\r"'],
+            'escape' => ["\x1B", '"\\e"'],
+            'space' => [' ', "' '"],
+            'double-quote' => ['"', "'\"'"],
+            'slash' => ['/', '/'],
+            'backslash' => ['\\', '\\'],
+            'next-line' => ["\xC2\x85", '"\\N"'],
+            'non-breaking-space' => ["\xc2\xa0", '"\\_"'],
+            'line-separator' => ["\xE2\x80\xA8", '"\\L"'],
+            'paragraph-separator' => ["\xE2\x80\xA9", '"\\P"'],
+            'colon' => [':', "':'"],
+        ];
     }
 
     public function testBinaryDataIsDumpedBase64Encoded()
@@ -237,7 +237,7 @@ public function testBinaryDataIsDumpedBase64Encoded()
         $binaryData = file_get_contents(__DIR__.'/Fixtures/arrow.gif');
         $expected = '{ data: !!binary '.base64_encode($binaryData).' }';
 
-        $this->assertSame($expected, $this->dumper->dump(array('data' => $binaryData)));
+        $this->assertSame($expected, $this->dumper->dump(['data' => $binaryData]));
     }
 
     public function testNonUtf8DataIsDumpedBase64Encoded()
@@ -258,18 +258,18 @@ public function testDumpObjectAsMap($object, $expected)
 
     public function objectAsMapProvider()
     {
-        $tests = array();
+        $tests = [];
 
         $bar = new \stdClass();
         $bar->class = 'classBar';
-        $bar->args = array('bar');
+        $bar->args = ['bar'];
         $zar = new \stdClass();
         $foo = new \stdClass();
         $foo->bar = $bar;
         $foo->zar = $zar;
         $object = new \stdClass();
         $object->foo = $foo;
-        $tests['stdClass'] = array($object, $object);
+        $tests['stdClass'] = [$object, $object];
 
         $arrayObject = new \ArrayObject();
         $arrayObject['foo'] = 'bar';
@@ -277,19 +277,19 @@ public function objectAsMapProvider()
         $parsedArrayObject = new \stdClass();
         $parsedArrayObject->foo = 'bar';
         $parsedArrayObject->baz = 'foobar';
-        $tests['ArrayObject'] = array($arrayObject, $parsedArrayObject);
+        $tests['ArrayObject'] = [$arrayObject, $parsedArrayObject];
 
         $a = new A();
-        $tests['arbitrary-object'] = array($a, null);
+        $tests['arbitrary-object'] = [$a, null];
 
         return $tests;
     }
 
     public function testDumpingArrayObjectInstancesRespectsInlineLevel()
     {
-        $deep = new \ArrayObject(array('deep1' => 'd', 'deep2' => 'e'));
-        $inner = new \ArrayObject(array('inner1' => 'b', 'inner2' => 'c', 'inner3' => $deep));
-        $outer = new \ArrayObject(array('outer1' => 'a', 'outer2' => $inner));
+        $deep = new \ArrayObject(['deep1' => 'd', 'deep2' => 'e']);
+        $inner = new \ArrayObject(['inner1' => 'b', 'inner2' => 'c', 'inner3' => $deep]);
+        $outer = new \ArrayObject(['outer1' => 'a', 'outer2' => $inner]);
 
         $yaml = $this->dumper->dump($outer, 2, 0, Yaml::DUMP_OBJECT_AS_MAP);
 
@@ -306,9 +306,9 @@ public function testDumpingArrayObjectInstancesRespectsInlineLevel()
 
     public function testDumpingArrayObjectInstancesWithNumericKeysInlined()
     {
-        $deep = new \ArrayObject(array('d', 'e'));
-        $inner = new \ArrayObject(array('b', 'c', $deep));
-        $outer = new \ArrayObject(array('a', $inner));
+        $deep = new \ArrayObject(['d', 'e']);
+        $i
10000
nner = new \ArrayObject(['b', 'c', $deep]);
+        $outer = new \ArrayObject(['a', $inner]);
 
         $yaml = $this->dumper->dump($outer, 0, 0, Yaml::DUMP_OBJECT_AS_MAP);
         $expected = <<<YAML
@@ -319,9 +319,9 @@ public function testDumpingArrayObjectInstancesWithNumericKeysInlined()
 
     public function testDumpingArrayObjectInstancesWithNumericKeysRespectsInlineLevel()
     {
-        $deep = new \ArrayObject(array('d', 'e'));
-        $inner = new \ArrayObject(array('b', 'c', $deep));
-        $outer = new \ArrayObject(array('a', $inner));
+        $deep = new \ArrayObject(['d', 'e']);
+        $inner = new \ArrayObject(['b', 'c', $deep]);
+        $outer = new \ArrayObject(['a', $inner]);
         $yaml = $this->dumper->dump($outer, 2, 0, Yaml::DUMP_OBJECT_AS_MAP);
         $expected = <<<YAML
 0: a
@@ -374,34 +374,34 @@ public function testDumpingStdClassInstancesRespectsInlineLevel()
 
     public function testDumpMultiLineStringAsScalarBlock()
     {
-        $data = array(
-            'data' => array(
+        $data = [
+            'data' => [
                 'single_line' => 'foo bar baz',
                 'multi_line' => "foo\nline with trailing spaces:\n  \nbar\ninteger like line:\n123456789\nempty line:\n\nbaz",
                 'multi_line_with_carriage_return' => "foo\nbar\r\nbaz",
-                'nested_inlined_multi_line_string' => array(
+                'nested_inlined_multi_line_string' => [
                     'inlined_multi_line' => "foo\nbar\r\nempty line:\n\nbaz",
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
         $this->assertSame(file_get_contents(__DIR__.'/Fixtures/multiple_lines_as_literal_block.yml'), $this->dumper->dump($data, 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
     }
 
     public function testDumpMultiLineStringAsScalarBlockWhenFirstLineHasLeadingSpace()
     {
-        $data = array(
-            'data' => array(
+        $data = [
+            'data' => [
                 'multi_line' => "    the first line has leading spaces\nThe second line does not.",
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame(file_get_contents(__DIR__.'/Fixtures/multiple_lines_as_literal_block_leading_space_in_first_line.yml'), $this->dumper->dump($data, 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
     }
 
     public function testCarriageReturnIsMaintainedWhenDumpingAsMultiLineLiteralBlock()
     {
-        $this->assertSame("- \"a\\r\\nb\\nc\"\n", $this->dumper->dump(array("a\r\nb\nc"), 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
+        $this->assertSame("- \"a\\r\\nb\\nc\"\n", $this->dumper->dump(["a\r\nb\nc"], 2, 0, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK));
     }
 
     /**
diff --git a/src/Symfony/Component/Yaml/Tests/InlineTest.php b/src/Symfony/Component/Yaml/Tests/InlineTest.php
index 7ba46bdffb49..9da834369fc5 100644
--- a/src/Symfony/Component/Yaml/Tests/InlineTest.php
+++ b/src/Symfony/Component/Yaml/Tests/InlineTest.php
@@ -54,13 +54,13 @@ public function testParsePhpConstants($yaml, $value)
 
     public function getTestsForParsePhpConstants()
     {
-        return array(
-            array('!php/const Symfony\Component\Yaml\Yaml::PARSE_CONSTANT', Yaml::PARSE_CONSTANT),
-            array('!php/const PHP_INT_MAX', PHP_INT_MAX),
-            array('[!php/const PHP_INT_MAX]', array(PHP_INT_MAX)),
-            array('{ foo: !php/const PHP_INT_MAX }', array('foo' => PHP_INT_MAX)),
-            array('!php/const NULL', null),
-        );
+        return [
+            ['!php/const Symfony\Component\Yaml\Yaml::PARSE_CONSTANT', Yaml::PARSE_CONSTANT],
+            ['!php/const PHP_INT_MAX', PHP_INT_MAX],
+            ['[!php/const PHP_INT_MAX]', [PHP_INT_MAX]],
+            ['{ foo: !php/const PHP_INT_MAX }', ['foo' => PHP_INT_MAX]],
+            ['!php/const NULL', null],
+        ];
     }
 
     /**
@@ -99,7 +99,7 @@ public function testDumpNumericValueWithLocale()
         }
 
         try {
-            $requiredLocales = array('fr_FR.UTF-8', 'fr_FR.UTF8', 'fr_FR.utf-8', 'fr_FR.utf8', 'French_France.1252');
+            $requiredLocales = ['fr_FR.UTF-8', 'fr_FR.UTF8', 'fr_FR.utf-8', 'fr_FR.utf8', 'French_France.1252'];
             if (false === setlocale(LC_NUMERIC, $requiredLocales)) {
                 $this->markTestSkipped('Could not set any of required locales: '.implode(', ', $requiredLocales));
             }
@@ -200,31 +200,31 @@ public function testParseScalarWithCorrectlyQuotedStringShouldReturnString()
      */
     public function testParseReferences($yaml, $expected)
     {
-        $this->assertSame($expected, Inline::parse($yaml, 0, array('var' => 'var-value')));
+        $this->assertSame($expected, Inline::parse($yaml, 0, ['var' => 'var-value']));
     }
 
     public function getDataForParseReferences()
     {
-        return array(
-            'scalar' => array('*var', 'var-value'),
-            'list' => array('[ *var ]', array('var-value')),
-            'list-in-list' => array('[[ *var ]]', array(array('var-value'))),
-            'map-in-list' => array('[ { key: *var } ]', array(array('key' => 'var-value'))),
-            'embedded-mapping-in-list' => array('[ key: *var ]', array(array('key' => 'var-value'))),
-            'map' => array('{ key: *var }', array('key' => 'var-value')),
-            'list-in-map' => array('{ key: [*var] }', array('key' => array('var-value'))),
-            'map-in-map' => array('{ foo: { bar: *var } }', array('foo' => array('bar' => 'var-value'))),
-        );
+        return [
+            'scalar' => ['*var', 'var-value'],
+            'list' => ['[ *var ]', ['var-value']],
+            'list-in-list' => ['[[ *var ]]', [['var-value']]],
+            'map-in-list' => ['[ { key: *var } ]', [['key' => 'var-value']]],
+            'embedded-mapping-in-list' => ['[ key: *var ]', [['key' => 'var-value']]],
+            'map' => ['{ key: *var }', ['key' => 'var-value']],
+            'list-in-map' => ['{ key: [*var] }', ['key' => ['var-value']]],
+            'map-in-map' => ['{ foo: { bar: *var } }', ['foo' => ['bar' => 'var-value']]],
+        ];
     }
 
     public function testParseMapReferenceInSequence()
     {
-        $foo = array(
+        $foo = [
             'a' => 'Steve',
             'b' => 'Clark',
             'c' => 'Brian',
-        );
-        $this->assertSame(array($foo), Inline::parse('[*foo]', 0, array('foo' => $foo)));
+        ];
+        $this->assertSame([$foo], Inline::parse('[*foo]', 0, ['foo' => $foo]));
     }
 
     /**
@@ -262,7 +262,7 @@ public function testParseUnquotedScalarStartingWithReservedIndicator($indicator)
 
     public function getReservedIndicators()
     {
-        return array(array('@'), array('`'));
+        return [['@'], ['`']];
     }
 
     /**
@@ -282,7 +282,7 @@ public function testParseUnquotedScalarStartingWithScalarIndicator($indicator)
 
     public function getScalarIndicators()
     {
-        return array(array('|'), array('>'), array('%'));
+        return [['|'], ['>'], ['%']];
     }
 
     /**
@@ -295,240 +295,240 @@ public function testIsHash($array, $expected)
 
     public function getDataForIsHash()
     {
-        return array(
-            array(array(), false),
-            array(array(1, 2, 3), false),
-            array(array(2 => 1, 1 => 2, 0 => 3), true),
-            array(array('foo' => 1, 'bar' => 2), true),
-        );
+        return [
+            [[], false],
+            [[1, 2, 3], false],
+            [[2 => 1, 1 => 2, 0 => 3], true],
+            [['foo' => 1, 'bar' => 2], true],
+        ];
     }
 
     public function getTestsForParse()
     {
-        return array(
-            array('', ''),
-            array('null', null),
-            array('false', false),
-            array('true', true),
-            array('12', 12),
-            array('-12', -12),
-            array('1_2', 12),
-            array('_12', '_12'),
-            array('12_', 12),
-            array('"quoted string"', 'quoted string'),
-            array("'quoted string'", 'quoted string'),
-            array('12.30e+02', 12.30e+02),
-            array('123.45_67', 123.4567),
-            array('0x4D2', 0x4D2),
-            array('0x_4_D_2_', 0x4D2),
-            array('02333', 02333),
-            array('0_2_3_3_3', 02333),
-            array('.Inf', -log(0)),
-            array('-.Inf', log(0)),
-            array("'686e444'", '686e444'),
-            array('686e444', 646e444),
-            array('123456789123456789123456789123456789', '123456789123456789123456789123456789'),
-            array('"foo\r\nbar"', "foo\r\nbar"),
-            array("'foo#bar'", 'foo#bar'),
-            array("'foo # bar'", 'foo # bar'),
-            array("'#cfcfcf'", '#cfcfcf'),
-            array('::form_base.html.twig', '::form_base.html.twig'),
+        return [
+            ['', ''],
+            ['null', null],
+            ['false', false],
+            ['true', true],
+            ['12', 12],
+            ['-12', -12],
+            ['1_2', 12],
+            ['_12', '_12'],
+            ['12_', 12],
+            ['"quoted string"', 'quoted string'],
+            ["'quoted string'", 'quoted string'],
+            ['12.30e+02', 12.30e+02],
+            ['123.45_67', 123.4567],
+            ['0x4D2', 0x4D2],
+            ['0x_4_D_2_', 0x4D2],
+            ['02333', 02333],
+            ['0_2_3_3_3', 02333],
+            ['.Inf', -log(0)],
+            ['-.Inf', log(0)],
+            ["'686e444'", '686e444'],
+            ['686e444', 646e444],
+            ['123456789123456789123456789123456789', '123456789123456789123456789123456789'],
+            ['"foo\r\nbar"', "foo\r\nbar"],
+            ["'foo#bar'", 'foo#bar'],
+            ["'foo # bar'", 'foo # bar'],
+            ["'#cfcfcf'", '#cfcfcf'],
+            ['::form_base.html.twig', '::form_base.html.twig'],
 
             // Pre-YAML-1.2 booleans
-            array("'y'", 'y'),
-            array("'n'", 'n'),
-            array("'yes'", 'yes'),
-            array("'no'", 'no'),
-            array("'on'", 'on'),
-            array("'off'", 'off'),
-
-            array('2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)),
-            array('2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)),
-            array('2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)),
-            array('1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)),
-            array('1730-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 1730)),
-
-            array('"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''),
-            array("'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''),
+            ["'y'", 'y'],
+            ["'n'", 'n'],
+            ["'yes'", 'yes'],
+            ["'no'", 'no'],
+            ["'on'", 'on'],
+            ["'off'", 'off'],
+
+            ['2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)],
+            ['2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)],
+            ['2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)],
+            ['1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)],
+            ['1730-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 1730)],
+
+            ['"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''],
+            ["'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''],
 
             // sequences
             // urls are no key value mapping. see #3609. Valid yaml "key: value" mappings require a space after the colon
-            array('[foo, http://urls.are/no/mappings, false, null, 12]', array('foo', 'http://urls.are/no/mappings', false, null, 12)),
-            array('[  foo  ,   bar , false  ,  null     ,  12  ]', array('foo', 'bar', false, null, 12)),
-            array('[\'foo,bar\', \'foo bar\']', array('foo,bar', 'foo bar')),
+            ['[foo, http://urls.are/no/mappings, false, null, 12]', ['foo', 'http://urls.are/no/mappings', false, null, 12]],
+            ['[  foo  ,   bar , false  ,  null     ,  12  ]', ['foo', 'bar', false, null, 12]],
+            ['[\'foo,bar\', \'foo bar\']', ['foo,bar', 'foo bar']],
 
             // mappings
-            array('{foo: bar,bar: foo,"false": false, "null": null,integer: 12}', array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12)),
-            array('{ foo  : bar, bar : foo, "false"  :   false,  "null"  :   null,  integer :  12  }', array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12)),
-            array('{foo: \'bar\', bar: \'foo: bar\'}', array('foo' => 'bar', 'bar' => 'foo: bar')),
-            array('{\'foo\': \'bar\', "bar": \'foo: bar\'}', array('foo' => 'bar', 'bar' => 'foo: bar')),
-            array('{\'foo\'\'\': \'bar\', "bar\"": \'foo: bar\'}', array('foo\'' => 'bar', 'bar"' => 'foo: bar')),
-            array('{\'foo: \': \'bar\', "bar: ": \'foo: bar\'}', array('foo: ' => 'bar', 'bar: ' => 'foo: bar')),
-            array('{"foo:bar": "baz"}', array('foo:bar' => 'baz')),
-            array('{"foo":"bar"}', array('foo' => 'bar')),
+            ['{foo: bar,bar: foo,"false": false, "null": null,integer: 12}', ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12]],
+            ['{ foo  : bar, bar : foo, "false"  :   false,  "null"  :   null,  integer :  12  }', ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12]],
+            ['{foo: \'bar\', bar: \'foo: bar\'}', ['foo' => 'bar', 'bar' => 'foo: bar']],
+            ['{\'foo\': \'bar\', "bar": \'foo: bar\'}', ['foo' => 'bar', 'bar' => 'foo: bar']],
+            ['{\'foo\'\'\': \'bar\', "bar\"": \'foo: bar\'}', ['foo\'' => 'bar', 'bar"' => 'foo: bar']],
+            ['{\'foo: \': \'bar\', "bar: ": \'foo: bar\'}', ['foo: ' => 'bar', 'bar: ' => 'foo: bar']],
+            ['{"foo:bar": "baz"}', ['foo:bar' => 'baz']],
+            ['{"foo":"bar"}', ['foo' => 'bar']],
 
             // nested sequences and mappings
-            array('[foo, [bar, foo]]', array('foo', array('bar', 'foo'))),
-            array('[foo, {bar: foo}]', array('foo', array('bar' => 'foo'))),
-            array('{ foo: {bar: foo} }', array('foo' => array('bar' => 'foo'))),
-            array('{ foo: [bar, foo] }', array('foo' => array('bar', 'foo'))),
-            array('{ foo:{bar: foo} }', array('foo' => array('bar' => 'foo'))),
-            array('{ foo:[bar, foo] }', array('foo' => array('bar', 'foo'))),
+            ['[foo, [bar, foo]]', ['foo', ['bar', 'foo']]],
+            ['[foo, {bar: foo}]', ['foo', ['bar' => 'foo']]],
+            ['{ foo: {bar: foo} }', ['foo' => ['bar' => 'foo']]],
+            ['{ foo: [bar, foo] }', ['foo' => ['bar', 'foo']]],
+            ['{ foo:{bar: foo} }', ['foo' => ['bar' => 'foo']]],
+            ['{ foo:[bar, foo] }', ['foo' => ['bar', 'foo']]],
 
-            array('[  foo, [  bar, foo  ]  ]', array('foo', array('bar', 'foo'))),
+            ['[  foo, [  bar, foo  ]  ]', ['foo', ['bar', 'foo']]],
 
-            array('[{ foo: {bar: foo} }]', array(array('foo' => array('bar' => 'foo')))),
+            ['[{ foo: {bar: foo} }]', [['foo' => ['bar' => 'foo']]]],
 
-            array('[foo, [bar, [foo, [bar, foo]], foo]]', array('foo', array('bar', array('foo', array('bar', 'foo')), 'foo'))),
+            ['[foo, [bar, [foo, [bar, foo]], foo]]', ['foo', ['bar', ['foo', ['bar', 'foo']], 'foo']]],
 
-            array('[foo, {bar: foo, foo: [foo, {bar: foo}]}, [foo, {bar: foo}]]', array('foo', array('bar' => 'foo', 'foo' => array('foo', array('bar' => 'foo'))), array('foo', array('bar' => 'foo')))),
+            ['[foo, {bar: foo, foo: [foo, {bar: foo}]}, [foo, {bar: foo}]]', ['foo', ['bar' => 'foo', 'foo' => ['foo', ['bar' => 'foo']]], ['foo', ['bar' => 'foo']]]],
 
-            array('[foo, bar: { foo: bar }]', array('foo', '1' => array('bar' => array('foo' => 'bar')))),
-            array('[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', array('foo', '@foo.baz', array('%foo%' => 'foo is %foo%', 'bar' => '%foo%'), true, '@service_container')),
-        );
+            ['[foo, bar: { foo: bar }]', ['foo', '1' => ['bar' => ['foo' => 'bar']]]],
+            ['[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', ['foo', '@foo.baz', ['%foo%' => 'foo is %foo%', 'bar' => '%foo%'], true, '@service_container']],
+        ];
     }
 
     public function getTestsForParseWithMapObjects()
     {
-        return array(
-            array('', ''),
-            array('null', null),
-            array('false', false),
-            array('true', true),
-            array('12', 12),
-            array('-12', -12),
-            array('"quoted string"', 'quoted string'),
-            array("'quoted string'", 'quoted string'),
-            array('12.30e+02', 12.30e+02),
-            array('0x4D2', 0x4D2),
-            array('02333', 02333),
-            array('.Inf', -log(0)),
-            array('-.Inf', log(0)),
-            array("'686e444'", '686e444'),
-            array('686e444', 646e444),
-            array('123456789123456789123456789123456789', '123456789123456789123456789123456789'),
-            array('"foo\r\nbar"', "foo\r\nbar"),
-            array("'foo#bar'", 'foo#bar'),
-            array("'foo # bar'", 'foo # bar'),
-            array("'#cfcfcf'", '#cfcfcf'),
-            array('::form_base.html.twig', '::form_base.html.twig'),
-
-            array('2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)),
-            array('2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)),
-            array('2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)),
-            array('1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)),
-            array('1730-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 1730)),
-
-            array('"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''),
-            array("'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''),
+        return [
+            ['', ''],
+            ['null', null],
+            ['false', false],
+            ['true', true],
+            ['12', 12],
+            ['-12', -12],
+            ['"quoted string"', 'quoted string'],
+            ["'quoted string'", 'quoted string'],
+            ['12.30e+02', 12.30e+02],
+            ['0x4D2', 0x4D2],
+            ['02333', 02333],
+            ['.Inf', -log(0)],
+            ['-.Inf', log(0)],
+            ["'686e444'", '686e444'],
+            ['686e444', 646e444],
+            ['123456789123456789123456789123456789', '123456789123456789123456789123456789'],
+            ['"foo\r\nbar"', "foo\r\nbar"],
+            ["'foo#bar'", 'foo#bar'],
+            ["'foo # bar'", 'foo # bar'],
+            ["'#cfcfcf'", '#cfcfcf'],
+            ['::form_base.html.twig', '::form_base.html.twig'],
+
+            ['2007-10-30', gmmktime(0, 0, 0, 10, 30, 2007)],
+            ['2007-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 2007)],
+            ['2007-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 2007)],
+            ['1960-10-30 02:59:43 Z', gmmktime(2, 59, 43, 10, 30, 1960)],
+            ['1730-10-30T02:59:43Z', gmmktime(2, 59, 43, 10, 30, 1730)],
+
+            ['"a \\"string\\" with \'quoted strings inside\'"', 'a "string" with \'quoted strings inside\''],
+            ["'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''],
 
             // sequences
             // urls are no key value mapping. see #3609. Valid yaml "key: value" mappings require a space after the colon
-            array('[foo, http://urls.are/no/mappings, false, null, 12]', array('foo', 'http://urls.are/no/mappings', false, null, 12)),
-            array('[  foo  ,   bar , false  ,  null     ,  12  ]', array('foo', 'bar', false, null, 12)),
-            array('[\'foo,bar\', \'foo bar\']', array('foo,bar', 'foo bar')),
+            ['[foo, http://urls.are/no/mappings, false, null, 12]', ['foo', 'http://urls.are/no/mappings', false, null, 12]],
+            ['[  foo  ,   bar , false  ,  null     ,  12  ]', ['foo', 'bar', false, null, 12]],
+            ['[\'foo,bar\', \'foo bar\']', ['foo,bar', 'foo bar']],
 
             // mappings
-            array('{foo: bar,bar: foo,"false": false,"null": null,integer: 12}', (object) array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12), Yaml::PARSE_OBJECT_FOR_MAP),
-            array('{ foo  : bar, bar : foo,  "false"  :   false,  "null"  :   null,  integer :  12  }', (object) array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12), Yaml::PARSE_OBJECT_FOR_MAP),
-            array('{foo: \'bar\', bar: \'foo: bar\'}', (object) array('foo' => 'bar', 'bar' => 'foo: bar')),
-            array('{\'foo\': \'bar\', "bar": \'foo: bar\'}', (object) array('foo' => 'bar', 'bar' => 'foo: bar')),
-            array('{\'foo\'\'\': \'bar\', "bar\"": \'foo: bar\'}', (object) array('foo\'' => 'bar', 'bar"' => 'foo: bar')),
-            array('{\'foo: \': \'bar\', "bar: ": \'foo: bar\'}', (object) array('foo: ' => 'bar', 'bar: ' => 'foo: bar')),
-            array('{"foo:bar": "baz"}', (object) array('foo:bar' => 'baz')),
-            array('{"foo":"bar"}', (object) array('foo' => 'bar')),
+            ['{foo: bar,bar: foo,"false": false,"null": null,integer: 12}', (object) ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12], Yaml::PARSE_OBJECT_FOR_MAP],
+            ['{ foo  : bar, bar : foo,  "false"  :   false,  "null"  :   null,  integer :  12  }', (object) ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12], Yaml::PARSE_OBJECT_FOR_MAP],
+            ['{foo: \'bar\', bar: \'foo: bar\'}', (object) ['foo' => 'bar', 'bar' => 'foo: bar']],
+            ['{\'foo\': \'bar\', "bar": \'foo: bar\'}', (object) ['foo' => 'bar', 'bar' => 'foo: bar']],
+            ['{\'foo\'\'\': \'bar\', "bar\"": \'foo: bar\'}', (object) ['foo\'' => 'bar', 'bar"' => 'foo: bar']],
+            ['{\'foo: \': \'bar\', "bar: ": \'foo: bar\'}', (object) ['foo: ' => 'bar', 'bar: ' => 'foo: bar']],
+            ['{"foo:bar": "baz"}', (object) ['foo:bar' => 'baz']],
+            ['{"foo":"bar"}', (object) ['foo' => 'bar']],
 
             // nested sequences and mappings
-            array('[foo, [bar, foo]]', array('foo', array('bar', 'foo'))),
-            array('[foo, {bar: foo}]', array('foo', (object) array('bar' => 'foo'))),
-            array('{ foo: {bar: foo} }', (object) array('foo' => (object) array('bar' => 'foo'))),
-            array('{ foo: [bar, foo] }', (object) array('foo' => array('bar', 'foo'))),
+            ['[foo, [bar, foo]]', ['foo', ['bar', 'foo']]],
+            ['[foo, {bar: foo}]', ['foo', (object) ['bar' => 'foo']]],
+            ['{ foo: {bar: foo} }', (object) ['foo' => (object) ['bar' => 'foo']]],
+            ['{ foo: [bar, foo] }', (object) ['foo' => ['bar', 'foo']]],
 
-            array('[  foo, [  bar, foo  ]  ]', array('foo', array('bar', 'foo'))),
+            ['[  foo, [  bar, foo  ]  ]', ['foo', ['bar', 'foo']]],
 
-            array('[{ foo: {bar: foo} }]', array((object) array('foo' => (object) array('bar' => 'foo')))),
+            ['[{ foo: {bar: foo} }]', [(object) ['foo' => (object) ['bar' => 'foo']]]],
 
-            array('[foo, [bar, [foo, [bar, foo]], foo]]', array('foo', array('bar', array('foo', array('bar', 'foo')), 'foo'))),
+            ['[foo, [bar, [foo, [bar, foo]], foo]]', ['foo', ['bar', ['foo', ['bar', 'foo']], 'foo']]],
 
-            array('[foo, {bar: foo, foo: [foo, {bar: foo}]}, [foo, {bar: foo}]]', array('foo', (object) array('bar' => 'foo', 'foo' => array('foo', (object) array('bar' => 'foo'))), array('foo', (object) array('bar' => 'foo')))),
+            ['[foo, {bar: foo, foo: [foo, {bar: foo}]}, [foo, {bar: foo}]]', ['foo', (object) ['bar' => 'foo', 'foo' => ['foo', (object) ['bar' => 'foo']]], ['foo', (object) ['bar' => 'foo']]]],
 
-            array('[foo, bar: { foo: bar }]', array('foo', '1' => (object) array('bar' => (object) array('foo' => 'bar')))),
-            array('[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', array('foo', '@foo.baz', (object) array('%foo%' => 'foo is %foo%', 'bar' => '%foo%'), true, '@service_container')),
+            ['[foo, bar: { foo: bar }]', ['foo', '1' => (object) ['bar' => (object) ['foo' => 'bar']]]],
+            ['[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', ['foo', '@foo.baz', (object) ['%foo%' => 'foo is %foo%', 'bar' => '%foo%'], true, '@service_container']],
 
-            array('{}', new \stdClass()),
-            array('{ foo  : bar, bar : {}  }', (object) array('foo' => 'bar', 'bar' => new \stdClass())),
-            array('{ foo  : [], bar : {}  }', (object) array('foo' => array(), 'bar' => new \stdClass())),
-            array('{foo: \'bar\', bar: {} }', (object) array('foo' => 'bar', 'bar' => new \stdClass())),
-            array('{\'foo\': \'bar\', "bar": {}}', (object) array('foo' => 'bar', 'bar' => new \stdClass())),
-            array('{\'foo\': \'bar\', "bar": \'{}\'}', (object) array('foo' => 'bar', 'bar' => '{}')),
+            ['{}', new \stdClass()],
+            ['{ foo  : bar, bar : {}  }', (object) ['foo' => 'bar', 'bar' => new \stdClass()]],
+            ['{ foo  : [], bar : {}  }', (object) ['foo' => [], 'bar' => new \stdClass()]],
+            ['{foo: \'bar\', bar: {} }', (object) ['foo' => 'bar', 'bar' => new \stdClass()]],
+            ['{\'foo\': \'bar\', "bar": {}}', (object) ['foo' => 'bar', 'bar' => new \stdClass()]],
+            ['{\'foo\': \'bar\', "bar": \'{}\'}', (object) ['foo' => 'bar', 'bar' => '{}']],
 
-            array('[foo, [{}, {}]]', array('foo', array(new \stdClass(), new \stdClass()))),
-            array('[foo, [[], {}]]', array('foo', array(array(), new \stdClass()))),
-            array('[foo, [[{}, {}], {}]]', array('foo', array(array(new \stdClass(), new \stdClass()), new \stdClass()))),
-            array('[foo, {bar: {}}]', array('foo', '1' => (object) array('bar' => new \stdClass()))),
-        );
+            ['[foo, [{}, {}]]', ['foo', [new \stdClass(), new \stdClass()]]],
+            ['[foo, [[], {}]]', ['foo', [[], new \stdClass()]]],
+            ['[foo, [[{}, {}], {}]]', ['foo', [[new \stdClass(), new \stdClass()], new \stdClass()]]],
+            ['[foo, {bar: {}}]', ['foo', '1' => (object) ['bar' => new \stdClass()]]],
+        ];
     }
 
     public function getTestsForDump()
     {
-        return array(
-            array('null', null),
-            array('false', false),
-            array('true', true),
-            array('12', 12),
-            array("'1_2'", '1_2'),
-            array('_12', '_12'),
-            array("'12_'", '12_'),
-            array("'quoted string'", 'quoted string'),
-            array('!!float 1230', 12.30e+02),
-            array('1234', 0x4D2),
-            array('1243', 02333),
-            array("'0x_4_D_2_'", '0x_4_D_2_'),
-            array("'0_2_3_3_3'", '0_2_3_3_3'),
-            array('.Inf', -log(0)),
-            array('-.Inf', log(0)),
-            array("'686e444'", '686e444'),
-            array('"foo\r\nbar"', "foo\r\nbar"),
-            array("'foo#bar'", 'foo#bar'),
-            array("'foo # bar'", 'foo # bar'),
-            array("'#cfcfcf'", '#cfcfcf'),
-
-            array("'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''),
-
-            array("'-dash'", '-dash'),
-            array("'-'", '-'),
+        return [
+            ['null', null],
+            ['false', false],
+            ['true', true],
+            ['12', 12],
+            ["'1_2'", '1_2'],
+            ['_12', '_12'],
+            ["'12_'", '12_'],
+            ["'quoted string'", 'quoted string'],
+            ['!!float 1230', 12.30e+02],
+            ['1234', 0x4D2],
+            ['1243', 02333],
+            ["'0x_4_D_2_'", '0x_4_D_2_'],
+            ["'0_2_3_3_3'", '0_2_3_3_3'],
+            ['.Inf', -log(0)],
+            ['-.Inf', log(0)],
+            ["'686e444'", '686e444'],
+            ['"foo\r\nbar"', "foo\r\nbar"],
+            ["'foo#bar'", 'foo#bar'],
+            ["'foo # bar'", 'foo # bar'],
+            ["'#cfcfcf'", '#cfcfcf'],
+
+            ["'a \"string\" with ''quoted strings inside'''", 'a "string" with \'quoted strings inside\''],
+
+            ["'-dash'", '-dash'],
+            ["'-'", '-'],
 
             // Pre-YAML-1.2 booleans
-            array("'y'", 'y'),
-            array("'n'", 'n'),
-            array("'yes'", 'yes'),
-            array("'no'", 'no'),
-            array("'on'", 'on'),
-            array("'off'", 'off'),
+            ["'y'", 'y'],
+            ["'n'", 'n'],
+            ["'yes'", 'yes'],
+            ["'no'", 'no'],
+            ["'on'", 'on'],
+            ["'off'", 'off'],
 
             // sequences
-            array('[foo, bar, false, null, 12]', array('foo', 'bar', false, null, 12)),
-            array('[\'foo,bar\', \'foo bar\']', array('foo,bar', 'foo bar')),
+            ['[foo, bar, false, null, 12]', ['foo', 'bar', false, null, 12]],
+            ['[\'foo,bar\', \'foo bar\']', ['foo,bar', 'foo bar']],
 
             // mappings
-            array('{ foo: bar, bar: foo, \'false\': false, \'null\': null, integer: 12 }', array('foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12)),
-            array('{ foo: bar, bar: \'foo: bar\' }', array('foo' => 'bar', 'bar' => 'foo: bar')),
+            ['{ foo: bar, bar: foo, \'false\': false, \'null\': null, integer: 12 }', ['foo' => 'bar', 'bar' => 'foo', 'false' => false, 'null' => null, 'integer' => 12]],
+            ['{ foo: bar, bar: \'foo: bar\' }', ['foo' => 'bar', 'bar' => 'foo: bar']],
 
             // nested sequences and mappings
-            array('[foo, [bar, foo]]', array('foo', array('bar', 'foo'))),
+            ['[foo, [bar, foo]]', ['foo', ['bar', 'foo']]],
 
-            array('[foo, [bar, [foo, [bar, foo]], foo]]', array('foo', array('bar', array('foo', array('bar', 'foo')), 'foo'))),
+            ['[foo, [bar, [foo, [bar, foo]], foo]]', ['foo', ['bar', ['foo', ['bar', 'foo']], 'foo']]],
 
-            array('{ foo: { bar: foo } }', array('foo' => array('bar' => 'foo'))),
+            ['{ foo: { bar: foo } }', ['foo' => ['bar' => 'foo']]],
 
-            array('[foo, { bar: foo }]', array('foo', array('bar' => 'foo'))),
+            ['[foo, { bar: foo }]', ['foo', ['bar' => 'foo']]],
 
-            array('[foo, { bar: foo, foo: [foo, { bar: foo }] }, [foo, { bar: foo }]]', array('foo', array('bar' => 'foo', 'foo' => array('foo', array('bar' => 'foo'))), array('foo', array('bar' => 'foo')))),
+            ['[foo, { bar: foo, foo: [foo, { bar: foo }] }, [foo, { bar: foo }]]', ['foo', ['bar' => 'foo', 'foo' => ['foo', ['bar' => 'foo']]], ['foo', ['bar' => 'foo']]]],
 
-            array('[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', array('foo', '@foo.baz', array('%foo%' => 'foo is %foo%', 'bar' => '%foo%'), true, '@service_container')),
+            ['[foo, \'@foo.baz\', { \'%foo%\': \'foo is %foo%\', bar: \'%foo%\' }, true, \'@service_container\']', ['foo', '@foo.baz', ['%foo%' => 'foo is %foo%', 'bar' => '%foo%'], true, '@service_container']],
 
-            array('{ foo: { bar: { 1: 2, baz: 3 } } }', array('foo' => array('bar' => array(1 => 2, 'baz' => 3)))),
-        );
+            ['{ foo: { bar: { 1: 2, baz: 3 } } }', ['foo' => ['bar' => [1 => 2, 'baz' => 3]]]],
+        ];
     }
 
     /**
@@ -556,12 +556,12 @@ public function testParseTimestampAsDateTimeObject($yaml, $year, $month, $day, $
 
     public function getTimestampTests()
     {
-        return array(
-            'canonical' => array('2001-12-15T02:59:43.1Z', 2001, 12, 15, 2, 59, 43.1, '+0000'),
-            'ISO-8601' => array('2001-12-15t21:59:43.10-05:00', 2001, 12, 16, 2, 59, 43.1, '-0500'),
-            'spaced' => array('2001-12-15 21:59:43.10 -5', 2001, 12, 16, 2, 59, 43.1, '-0500'),
-            'date' => array('2001-12-15', 2001, 12, 15, 0, 0, 0, '+0000'),
-        );
+        return [
+            'canonical' => ['2001-12-15T02:59:43.1Z', 2001, 12, 15, 2, 59, 43.1, '+0000'],
+            'ISO-8601' => ['2001-12-15t21:59:43.10-05:00', 2001, 12, 16, 2, 59, 43.1, '-0500'],
+            'spaced' => ['2001-12-15 21:59:43.10 -5', 2001, 12, 16, 2, 59, 43.1, '-0500'],
+            'date' => ['2001-12-15', 2001, 12, 15, 0, 0, 0, '+0000'],
+        ];
     }
 
     /**
@@ -574,7 +574,7 @@ public function testParseNestedTimestampListAsDateTimeObject($yaml, $year, $mont
         $expected->setDate($year, $month, $day);
         $expected->setTime($hour, $minute, $second, 1000000 * ($second - (int) $second));
 
-        $expectedNested = array('nested' => array($expected));
+        $expectedNested = ['nested' => [$expected]];
         $yamlNested = "{nested: [$yaml]}";
 
         $this->assertEquals($expectedNested, Inline::parse($yamlNested, Yaml::PARSE_DATETIME));
@@ -590,13 +590,13 @@ public function testDumpDateTime($dateTime, $expected)
 
     public function getDateTimeDumpTests()
     {
-        $tests = array();
+        $tests = [];
 
         $dateTime = new \DateTime('2001-12-15 21:59:43', new \DateTimeZone('UTC'));
-        $tests['date-time-utc'] = array($dateTime, '2001-12-15T21:59:43+00:00');
+        $tests['date-time-utc'] = [$dateTime, '2001-12-15T21:59:43+00:00'];
 
         $dateTime = new \DateTimeImmutable('2001-07-15 21:59:43', new \DateTimeZone('Europe/Berlin'));
-        $tests['immutable-date-time-europe-berlin'] = array($dateTime, '2001-07-15T21:59:43+02:00');
+        $tests['immutable-date-time-europe-berlin'] = [$dateTime, '2001-07-15T21:59:43+02:00'];
 
         return $tests;
     }
@@ -611,11 +611,11 @@ public function testParseBinaryData($data)
 
     public function getBinaryData()
     {
-        return array(
-            'enclosed with double quotes' => array('!!binary "SGVsbG8gd29ybGQ="'),
-            'enclosed with single quotes' => array("!!binary 'SGVsbG8gd29ybGQ='"),
-            'containing spaces' => array('!!binary  "SGVs bG8gd 29ybGQ="'),
-        );
+        return [
+            'enclosed with double quotes' => ['!!binary "SGVsbG8gd29ybGQ="'],
+            'enclosed with single quotes' => ["!!binary 'SGVsbG8gd29ybGQ='"],
+            'containing spaces' => ['!!binary  "SGVs bG8gd 29ybGQ="'],
+        ];
     }
 
     /**
@@ -635,12 +635,12 @@ public function testParseInvalidBinaryData($data, $expectedMessage)
 
     public function getInvalidBinaryData()
     {
-        return array(
-            'length not a multiple of four' => array('!!binary "SGVsbG8d29ybGQ="', '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/'),
-            'invalid characters' => array('!!binary "SGVsbG8#d29ybGQ="', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'too many equals characters' => array('!!binary "SGVsbG8gd29yb==="', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'misplaced equals character' => array('!!binary "SGVsbG8gd29ybG=Q"', '/The base64 encoded data \(.*\) contains invalid characters/'),
-        );
+        return [
+            'length not a multiple of four' => ['!!binary "SGVsbG8d29ybGQ="', '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/'],
+            'invalid characters' => ['!!binary "SGVsbG8#d29ybGQ="', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'too many equals characters' => ['!!binary "SGVsbG8gd29yb==="', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'misplaced equals character' => ['!!binary "SGVsbG8gd29ybG=Q"', '/The base64 encoded data \(.*\) contains invalid characters/'],
+        ];
     }
 
     /**
@@ -656,7 +656,7 @@ public function testVeryLongQuotedStrings()
     {
         $longStringWithQuotes = str_repeat("x\r\n\\\"x\"x", 1000);
 
-        $yamlString = Inline::dump(array('longStringWithQuotes' => $longStringWithQuotes));
+        $yamlString = Inline::dump(['longStringWithQuotes' => $longStringWithQuotes]);
         $arrayFromYaml = Inline::parse($yamlString);
 
         $this->assertEquals($longStringWithQuotes, $arrayFromYaml['longStringWithQuotes']);
@@ -681,15 +681,15 @@ public function testParseMissingMappingValueAsNull($yaml, $expected)
 
     public function getTestsForNullValues()
     {
-        return array(
-            'null before closing curly brace' => array('{foo:}', array('foo' => null)),
-            'null before comma' => array('{foo:, bar: baz}', array('foo' => null, 'bar' => 'baz')),
-        );
+        return [
+            'null before closing curly brace' => ['{foo:}', ['foo' => null]],
+            'null before comma' => ['{foo:, bar: baz}', ['foo' => null, 'bar' => 'baz']],
+        ];
     }
 
     public function testTheEmptyStringIsAValidMappingKey()
     {
-        $this->assertSame(array('' => 'foo'), Inline::parse('{ "": foo }'));
+        $this->assertSame(['' => 'foo'], Inline::parse('{ "": foo }'));
     }
 
     /**
@@ -705,12 +705,12 @@ public function testImplicitStringCastingOfMappingKeysIsDeprecated($yaml, $expec
 
     public function getNotPhpCompatibleMappingKeyData()
     {
-        return array(
-            'boolean-true' => array('{true: "foo"}', array('true' => 'foo')),
-            'boolean-false' => array('{false: "foo"}', array('false' => 'foo')),
-            'null' => array('{null: "foo"}', array('null' => 'foo')),
-            'float' => array('{0.25: "foo"}', array('0.25' => 'foo')),
-        );
+        return [
+            'boolean-true' => ['{true: "foo"}', ['true' => 'foo']],
+            'boolean-false' => ['{false: "foo"}', ['false' => 'foo']],
+            'null' => ['{null: "foo"}', ['null' => 'foo']],
+            'float' => ['{0.25: "foo"}', ['0.25' => 'foo']],
+        ];
     }
 
     public function testTagWithoutValueInSequence()
diff --git a/src/Symfony/Component/Yaml/Tests/ParserTest.php b/src/Symfony/Component/Yaml/Tests/ParserTest.php
index 34df458c4c95..044b4ebecb2c 100644
--- a/src/Symfony/Component/Yaml/Tests/ParserTest.php
+++ b/src/Symfony/Component/Yaml/Tests/ParserTest.php
@@ -55,12 +55,12 @@ public function getNonStringMappingKeysData()
     public function testTabsInYaml()
     {
         // test tabs in YAML
-        $yamls = array(
+        $yamls = [
             "foo:\n	bar",
             "foo:\n 	bar",
             "foo:\n	 bar",
             "foo:\n 	 bar",
-        );
+        ];
 
         foreach ($yamls as $yaml) {
             try {
@@ -87,7 +87,7 @@ public function testEndOfTheDocumentMarker()
 
     public function getBlockChompingTests()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOF'
 foo: |-
@@ -98,11 +98,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping strip with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping strip with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |-
@@ -115,19 +115,19 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping strip with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping strip with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 {}
 
 
 EOF;
-        $expected = array();
-        $tests['Literal block chomping strip with multiple trailing newlines after a 1-liner'] = array($expected, $yaml);
+        $expected = [];
+        $tests['Literal block chomping strip with multiple trailing newlines after a 1-liner'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |-
@@ -137,11 +137,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping strip without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping strip without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |
@@ -152,11 +152,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo\n",
-        );
-        $tests['Literal block chomping clip with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping clip with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |
@@ -169,11 +169,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo\n",
-        );
-        $tests['Literal block chomping clip with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping clip with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo:
@@ -182,14 +182,14 @@ public function getBlockChompingTests()
 
     two
 EOF;
-        $expected = array(
-            'foo' => array(
-                array(
+        $expected = [
+            'foo' => [
+                [
                     'bar' => "one\n\ntwo",
-                ),
-            ),
-        );
-        $tests['Literal block chomping clip with embedded blank line inside unindented collection'] = array($expected, $yaml);
+                ],
+            ],
+        ];
+        $tests['Literal block chomping clip with embedded blank line inside unindented collection'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |
@@ -199,11 +199,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping clip without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping clip without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |+
@@ -214,11 +214,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo\n",
-        );
-        $tests['Literal block chomping keep with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping keep with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |+
@@ -231,11 +231,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n\n",
             'bar' => "one\ntwo\n\n",
-        );
-        $tests['Literal block chomping keep with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping keep with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: |+
@@ -245,11 +245,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one\ntwo\n",
             'bar' => "one\ntwo",
-        );
-        $tests['Literal block chomping keep without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Literal block chomping keep without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >-
@@ -260,11 +260,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => 'one two',
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping strip with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping strip with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >-
@@ -277,11 +277,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => 'one two',
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping strip with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping strip with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >-
@@ -291,11 +291,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => 'one two',
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping strip without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping strip without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >
@@ -306,11 +306,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => "one two\n",
-        );
-        $tests['Folded block chomping clip with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping clip with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >
@@ -323,11 +323,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => "one two\n",
-        );
-        $tests['Folded block chomping clip with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping clip with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >
@@ -337,11 +337,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping clip without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping clip without trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >+
@@ -352,11 +352,11 @@ public function getBlockChompingTests()
     two
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => "one two\n",
-        );
-        $tests['Folded block chomping keep with single trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping keep with single trailing newline'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >+
@@ -369,11 +369,11 @@ public function getBlockChompingTests()
 
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n\n",
             'bar' => "one two\n\n",
-        );
-        $tests['Folded block chomping keep with multiple trailing newlines'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping keep with multiple trailing newlines'] = [$expected, $yaml];
 
         $yaml = <<<'EOF'
 foo: >+
@@ -383,11 +383,11 @@ public function getBlockChompingTests()
     one
     two
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "one two\n",
             'bar' => 'one two',
-        );
-        $tests['Folded block chomping keep without trailing newline'] = array($expected, $yaml);
+        ];
+        $tests['Folded block chomping keep without trailing newline'] = [$expected, $yaml];
 
         return $tests;
     }
@@ -414,9 +414,9 @@ public function testBlockLiteralWithLeadingNewlines()
     bar
 
 EOF;
-        $expected = array(
+        $expected = [
             'foo' => "\n\nbar",
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -427,7 +427,7 @@ public function testObjectSupportEnabled()
 foo: !php/object O:30:"Symfony\Component\Yaml\Tests\B":1:{s:1:"b";s:3:"foo";}
 bar: 1
 EOF;
-        $this->assertEquals(array('foo' => new B(), 'bar' => 1), $this->parser->parse($input, Yaml::PARSE_OBJECT), '->parse() is able to parse objects');
+        $this->assertEquals(['foo' => new B(), 'bar' => 1], $this->parser->parse($input, Yaml::PARSE_OBJECT), '->parse() is able to parse objects');
     }
 
     public function testObjectSupportDisabledButNoExceptions()
@@ -436,7 +436,7 @@ public function testObjectSupportDisabledButNoExceptions()
 foo: !php/object O:30:"Symfony\Tests\Component\Yaml\B":1:{s:1:"b";s:3:"foo";}
 bar: 1
 EOF;
-        $this->assertEquals(array('foo' => null, 'bar' => 1), $this->parser->parse($input), '->parse() does not parse objects');
+        $this->assertEquals(['foo' => null, 'bar' => 1], $this->parser->parse($input), '->parse() does not parse objects');
     }
 
     /**
@@ -451,7 +451,7 @@ public function testObjectForMap($yaml, $expected)
 
     public function getObjectForMapTests()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOF'
 foo:
@@ -459,20 +459,20 @@ public function getObjectForMapTests()
 EOF;
         $expected = new \stdClass();
         $expected->foo = new \stdClass();
-        $expected->foo->fiz = array('cat');
-        $tests['mapping'] = array($yaml, $expected);
+        $expected->foo->fiz = ['cat'];
+        $tests['mapping'] = [$yaml, $expected];
 
         $yaml = '{ "foo": "bar", "fiz": "cat" }';
         $expected = new \stdClass();
         $expected->foo = 'bar';
         $expected->fiz = 'cat';
-        $tests['inline-mapping'] = array($yaml, $expected);
+        $tests['inline-mapping'] = [$yaml, $expected];
 
         $yaml = "foo: bar\nbaz: foobar";
         $expected = new \stdClass();
         $expected->foo = 'bar';
         $expected->baz = 'foobar';
-        $tests['object-for-map-is-applied-after-parsing'] = array($yaml, $expected);
+        $tests['object-for-map-is-applied-after-parsing'] = [$yaml, $expected];
 
         $yaml = <<<'EOT'
 array:
@@ -480,12 +480,12 @@ public function getObjectForMapTests()
   - key: two
 EOT;
         $expected = new \stdClass();
-        $expected->array = array();
+        $expected->array = [];
         $expected->array[0] = new \stdClass();
         $expected->array[0]->key = 'one';
         $expected->array[1] = new \stdClass();
         $expected->array[1]->key = 'two';
-        $tests['nest-map-and-sequence'] = array($yaml, $expected);
+        $tests['nest-map-and-sequence'] = [$yaml, $expected];
 
         $yaml = <<<'YAML'
 map:
@@ -496,7 +496,7 @@ public function getObjectForMapTests()
         $expected->map = new \stdClass();
         $expected->map->{1} = 'one';
         $expected->map->{2} = 'two';
-        $tests['numeric-keys'] = array($yaml, $expected);
+        $tests['numeric-keys'] = [$yaml, $expected];
 
         $yaml = <<<'YAML'
 map:
@@ -507,7 +507,7 @@ public function getObjectForMapTests()
         $expected->map = new \stdClass();
         $expected->map->{0} = 'one';
         $expected->map->{1} = 'two';
-        $tests['zero-indexed-numeric-keys'] = array($yaml, $expected);
+        $tests['zero-indexed-numeric-keys'] = [$yaml, $expected];
 
         return $tests;
     }
@@ -529,9 +529,9 @@ public function testCanParseContentWithTrailingSpaces()
     {
         $yaml = "items:  \n  foo: bar";
 
-        $expected = array(
-            'items' => array('foo' => 'bar'),
-        );
+        $expected = [
+            'items' => ['foo' => 'bar'],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -541,11 +541,11 @@ public function testCanParseContentWithTrailingSpaces()
      */
     public function testNonUtf8Exception()
     {
-        $yamls = array(
+        $yamls = [
             iconv('UTF-8', 'ISO-8859-1', "foo: 'äöüß'"),
             iconv('UTF-8', 'ISO-8859-15', "euro: '€'"),
             iconv('UTF-8', 'CP1252', "cp1252: '©ÉÇáñ'"),
-        );
+        ];
 
         foreach ($yamls as $yaml) {
             try {
@@ -636,19 +636,19 @@ public function testSequenceInMappingStartedBySingleDashLine()
 - foo
 d: e
 EOT;
-        $expected = array(
-            'a' => array(
-                array(
-                    'b' => array(
-                        array(
+        $expected = [
+            'a' => [
+                [
+                    'b' => [
+                        [
                             'bar' => 'baz',
-                        ),
-                    ),
-                ),
+                        ],
+                    ],
+                ],
                 'foo',
-            ),
+            ],
             'd' => 'e',
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -662,12 +662,12 @@ public function testSequenceFollowedByCommentEmbeddedInMapping()
 # comment
     d: e
 EOT;
-        $expected = array(
-            'a' => array(
-                'b' => array('c'),
+        $expected = [
+            'a' => [
+                'b' => ['c'],
                 'd' => 'e',
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -683,25 +683,25 @@ public function testNonStringFollowedByCommentEmbeddedInMapping()
         1.1
 # another comment
 EOT;
-        $expected = array(
-            'a' => array(
-                'b' => array(),
+        $expected = [
+            'a' => [
+                'b' => [],
                 'd' => 1.1,
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
 
     public function getParseExceptionNotAffectedMultiLineStringLastResortParsing()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOT'
 a
     b:
 EOT;
-        $tests['parse error on first line'] = array($yaml);
+        $tests['parse error on first line'] = [$yaml];
 
         $yaml = <<<'EOT'
 a
@@ -709,12 +709,12 @@ public function getParseExceptionNotAffectedMultiLineStringLastResortParsing()
 b
     c:
 EOT;
-        $tests['parse error due to inconsistent indentation'] = array($yaml);
+        $tests['parse error due to inconsistent indentation'] = [$yaml];
 
         $yaml = <<<'EOT'
  &  *  !  |  >  '  "  %  @  ` #, { asd a;sdasd }-@^qw3
 EOT;
-        $tests['symfony/symfony/issues/22967#issuecomment-322067742'] = array($yaml);
+        $tests['symfony/symfony/issues/22967#issuecomment-322067742'] = [$yaml];
 
         return $tests;
     }
@@ -736,9 +736,9 @@ public function testMultiLineStringLastResortParsing()
   true
   yes you can
 EOT;
-        $expected = array(
+        $expected = [
             'test' => 'You can have things that don\'t look like strings here true yes you can',
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
 
@@ -747,9 +747,9 @@ public function testMultiLineStringLastResortParsing()
     b
        c
 EOT;
-        $expected = array(
+        $expected = [
             'a' => 'b c',
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -805,11 +805,11 @@ public function testMappingDuplicateKeyBlock()
     child: duplicate
     child: duplicate
 EOD;
-        $expected = array(
-            'parent' => array(
+        $expected = [
+            'parent' => [
                 'child' => 'first',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expected, Yaml::parse($input));
     }
 
@@ -823,11 +823,11 @@ public function testMappingDuplicateKeyFlow()
 parent: { child: first, child: duplicate }
 parent: { child: duplicate, child: duplicate }
 EOD;
-        $expected = array(
-            'parent' => array(
+        $expected = [
+            'parent' => [
                 'child' => 'first',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expected, Yaml::parse($input));
     }
 
@@ -844,30 +844,30 @@ public function testParseExceptionOnDuplicate($input, $duplicateKey, $lineNumber
 
     public function getParseExceptionOnDuplicateData()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<EOD
 parent: { child: first, child: duplicate }
 EOD;
-        $tests[] = array($yaml, 'child', 1);
+        $tests[] = [$yaml, 'child', 1];
 
         $yaml = <<<EOD
 parent:
   child: first,
   child: duplicate
 EOD;
-        $tests[] = array($yaml, 'child', 3);
+        $tests[] = [$yaml, 'child', 3];
 
         $yaml = <<<EOD
 parent: { child: foo }
 parent: { child: bar }
 EOD;
-        $tests[] = array($yaml, 'parent', 2);
+        $tests[] = [$yaml, 'parent', 2];
 
         $yaml = <<<EOD
 parent: { child_mapping: { value: bar},  child_mapping: { value: bar} }
 EOD;
-        $tests[] = array($yaml, 'child_mapping', 1);
+        $tests[] = [$yaml, 'child_mapping', 1];
 
         $yaml = <<<EOD
 parent:
@@ -876,12 +876,12 @@ public function getParseExceptionOnDuplicateData()
   child_mapping:
     value: bar
 EOD;
-        $tests[] = array($yaml, 'child_mapping', 4);
+        $tests[] = [$yaml, 'child_mapping', 4];
 
         $yaml = <<<EOD
 parent: { child_sequence: ['key1', 'key2', 'key3'],  child_sequence: ['key1', 'key2', 'key3'] }
 EOD;
-        $tests[] = array($yaml, 'child_sequence', 1);
+        $tests[] = [$yaml, 'child_sequence', 1];
 
         $yaml = <<<EOD
 parent:
@@ -894,7 +894,7 @@ public function getParseExceptionOnDuplicateData()
     - key2
     - key3
 EOD;
-        $tests[] = array($yaml, 'child_sequence', 6);
+        $tests[] = [$yaml, 'child_sequence', 6];
 
         return $tests;
     }
@@ -905,21 +905,21 @@ public function testEmptyValue()
 hash:
 EOF;
 
-        $this->assertEquals(array('hash' => null), Yaml::parse($input));
+        $this->assertEquals(['hash' => null], Yaml::parse($input));
     }
 
     public function testCommentAtTheRootIndent()
     {
-        $this->assertEquals(array(
-            'services' => array(
-                'app.foo_service' => array(
+        $this->assertEquals([
+            'services' => [
+                'app.foo_service' => [
                     'class' => 'Foo',
-                ),
-                'app/bar_service' => array(
+                ],
+                'app/bar_service' => [
                     'class' => 'Bar',
-                ),
-            ),
-        ), Yaml::parse(<<<'EOF'
+                ],
+            ],
+        ], Yaml::parse(<<<'EOF'
 # comment 1
 services:
 # comment 2
@@ -936,7 +936,7 @@ class: Bar
 
     public function testStringBlockWithComments()
     {
-        $this->assertEquals(array('content' => <<<'EOT'
+        $this->assertEquals(['content' => <<<'EOT'
 # comment 1
 header
 
@@ -947,7 +947,7 @@ public function testStringBlockWithComments()
 
 footer # comment3
 EOT
-        ), Yaml::parse(<<<'EOF'
+        ], Yaml::parse(<<<'EOF'
 content: |
     # comment 1
     header
@@ -964,7 +964,7 @@ public function testStringBlockWithComments()
 
     public function testFoldedStringBlockWithComments()
     {
-        $this->assertEquals(array(array('content' => <<<'EOT'
+        $this->assertEquals([['content' => <<<'EOT'
 # comment 1
 header
 
@@ -975,7 +975,7 @@ public function testFoldedStringBlockWithComments()
 
 footer # comment3
 EOT
-        )), Yaml::parse(<<<'EOF'
+        ]], Yaml::parse(<<<'EOF'
 -
     content: |
         # comment 1
@@ -993,7 +993,7 @@ public function testFoldedStringBlockWithComments()
 
     public function testNestedFoldedStringBlockWithComments()
     {
-        $this->assertEquals(array(array(
+        $this->assertEquals([[
             'title' => 'some title',
             'content' => <<<'EOT'
 # comment 1
@@ -1006,7 +1006,7 @@ public function testNestedFoldedStringBlockWithComments()
 
 footer # comment3
 EOT
-        )), Yaml::parse(<<<'EOF'
+        ]], Yaml::parse(<<<'EOF'
 -
     title: some title
     content: |
@@ -1025,17 +1025,17 @@ public function testNestedFoldedStringBlockWithComments()
 
     public function testReferenceResolvingInInlineStrings()
     {
-        $this->assertEquals(array(
+        $this->assertEquals([
             'var' => 'var-value',
             'scalar' => 'var-value',
-            'list' => array('var-value'),
-            'list_in_list' => array(array('var-value')),
-            'map_in_list' => array(array('key' => 'var-value')),
-            'embedded_mapping' => array(array('key' => 'var-value')),
-            'map' => array('key' => 'var-value'),
-            'list_in_map' => array('key' => array('var-value')),
-            'map_in_map' => array('foo' => array('bar' => 'var-value')),
-        ), Yaml::parse(<<<'EOF'
+            'list' => ['var-value'],
+            'list_in_list' => [['var-value']],
+            'map_in_list' => [['key' => 'var-value']],
+            'embedded_mapping' => [['key' => 'var-value']],
+            'map' => ['key' => 'var-value'],
+            'list_in_map' => ['key' => ['var-value']],
+            'map_in_map' => ['foo' => ['bar' => 'var-value']],
+        ], Yaml::parse(<<<'EOF'
 var:  &var var-value
 scalar: *var
 list: [ *var ]
@@ -1057,7 +1057,7 @@ public function testYamlDirective()
 foo: 1
 bar: 2
 EOF;
-        $this->assertEquals(array('foo' => 1, 'bar' => 2), $this->parser->parse($yaml));
+        $this->assertEquals(['foo' => 1, 'bar' => 2], $this->parser->parse($yaml));
     }
 
     /**
@@ -1102,14 +1102,14 @@ public function testExplicitStringCasting()
 '~': 'null'
 EOF;
 
-        $expected = array(
+        $expected = [
             '1.2' => 'bar',
             '1.3' => 'baz',
             'true' => 'foo',
             'false' => 'bar',
             'null' => 'null',
             '~' => 'null',
-        );
+        ];
 
         $this->assertEquals($expected, $this->parser->parse($yaml));
     }
@@ -1134,7 +1134,7 @@ public function testColonInMappingValueExceptionNotTriggeredByColonInComment()
     bar: foobar # Note: a comment after a colon
 EOT;
 
-        $this->assertSame(array('foo' => array('bar' => 'foobar')), $this->parser->parse($yaml));
+        $this->assertSame(['foo' => ['bar' => 'foobar']], $this->parser->parse($yaml));
     }
 
     /**
@@ -1147,7 +1147,7 @@ public function testCommentLikeStringsAreNotStrippedInBlockScalars($yaml, $expec
 
     public function getCommentLikeStringInScalarBlockData()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOT'
 pages:
@@ -1164,9 +1164,9 @@ public function getCommentLikeStringInScalarBlockData()
 
             footer # comment3
 EOT;
-        $expected = array(
-            'pages' => array(
-                array(
+        $expected = [
+            'pages' => [
+                [
                     'title' => 'some title',
                     'content' => <<<'EOT'
 # comment 1
@@ -1180,10 +1180,10 @@ public function getCommentLikeStringInScalarBlockData()
 footer # comment3
 EOT
                     ,
-                ),
-            ),
-        );
-        $tests[] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests[] = [$yaml, $expected];
 
         $yaml = <<<'EOT'
 test: |
@@ -1200,7 +1200,7 @@ public function getCommentLikeStringInScalarBlockData()
         # bar
         baz
 EOT;
-        $expected = array(
+        $expected = [
             'test' => <<<'EOT'
 foo
 # bar
@@ -1208,8 +1208,8 @@ public function getCommentLikeStringInScalarBlockData()
 
 EOT
             ,
-            'collection' => array(
-                array(
+            'collection' => [
+                [
                     'one' => <<<'EOT'
 foo
 # bar
@@ -1217,18 +1217,18 @@ public function getCommentLikeStringInScalarBlockData()
 
 EOT
                     ,
-                ),
-                array(
+                ],
+                [
                     'two' => <<<'EOT'
 foo
 # bar
 baz
 EOT
                     ,
-                ),
-            ),
-        );
-        $tests[] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests[] = [$yaml, $expected];
 
         $yaml = <<<'EOT'
 foo:
@@ -1240,17 +1240,17 @@ public function getCommentLikeStringInScalarBlockData()
 # comment
     foobar: ~
 EOT;
-        $expected = array(
-            'foo' => array(
-                'bar' => array(
+        $expected = [
+            'foo' => [
+                'bar' => [
                     'scalar-block' => "line1 l
10000
ine2>\n",
-                ),
-                'baz' => array(
+                ],
+                'baz' => [
                     'foobar' => null,
-                ),
-            ),
-        );
-        $tests[] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests[] = [$yaml, $expected];
 
         $yaml = <<<'EOT'
 a:
@@ -1260,13 +1260,13 @@ public function getCommentLikeStringInScalarBlockData()
 #        second row
     d: hello
 EOT;
-        $expected = array(
-            'a' => array(
+        $expected = [
+            'a' => [
                 'b' => 'hello',
                 'd' => 'hello',
-            ),
-        );
-        $tests[] = array($yaml, $expected);
+            ],
+        ];
+        $tests[] = [$yaml, $expected];
 
         return $tests;
     }
@@ -1284,13 +1284,13 @@ public function testBlankLinesAreParsedAsNewLinesInFoldedBlocks()
 EOT;
 
         $this->assertSame(
-            array(
+            [
                 'test' => <<<'EOT'
 <h2>A heading</h2>
 <ul> <li>a list</li> <li>may be a good example</li> </ul>
 EOT
                 ,
-            ),
+            ],
             $this->parser->parse($yaml)
         );
     }
@@ -1308,7 +1308,7 @@ public function testAdditionallyIndentedLinesAreParsedAsNewLinesInFoldedBlocks()
 EOT;
 
         $this->assertSame(
-            array(
+            [
                 'test' => <<<'EOT'
 <h2>A heading</h2>
 <ul>
@@ -1317,7 +1317,7 @@ public function testAdditionallyIndentedLinesAreParsedAsNewLinesInFoldedBlocks()
 </ul>
 EOT
                 ,
-            ),
+            ],
             $this->parser->parse($yaml)
         );
     }
@@ -1327,28 +1327,28 @@ public function testAdditionallyIndentedLinesAreParsedAsNewLinesInFoldedBlocks()
      */
     public function testParseBinaryData($data)
     {
-        $this->assertSame(array('data' => 'Hello world'), $this->parser->parse($data));
+        $this->assertSame(['data' => 'Hello world'], $this->parser->parse($data));
     }
 
     public function getBinaryData()
     {
-        return array(
-            'enclosed with double quotes' => array('data: !!binary "SGVsbG8gd29ybGQ="'),
-            'enclosed with single quotes' => array("data: !!binary 'SGVsbG8gd29ybGQ='"),
-            'containing spaces' => array('data: !!binary  "SGVs bG8gd 29ybGQ="'),
-            'in block scalar' => array(
+        return [
+            'enclosed with double quotes' => ['data: !!binary "SGVsbG8gd29ybGQ="'],
+            'enclosed with single quotes' => ["data: !!binary 'SGVsbG8gd29ybGQ='"],
+            'containing spaces' => ['data: !!binary  "SGVs bG8gd 29ybGQ="'],
+            'in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8gd29ybGQ=
 EOT
-    ),
-            'containing spaces in block scalar' => array(
+    ],
+            'containing spaces in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVs bG8gd 29ybGQ=
 EOT
-    ),
-        );
+    ],
+        ];
     }
 
     /**
@@ -1368,44 +1368,44 @@ public function testParseInvalidBinaryData($data, $expectedMessage)
 
     public function getInvalidBinaryData()
     {
-        return array(
-            'length not a multiple of four' => array('data: !!binary "SGVsbG8d29ybGQ="', '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/'),
-            'invalid characters' => array('!!binary "SGVsbG8#d29ybGQ="', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'too many equals characters' => array('data: !!binary "SGVsbG8gd29yb==="', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'misplaced equals character' => array('data: !!binary "SGVsbG8gd29ybG=Q"', '/The base64 encoded data \(.*\) contains invalid characters/'),
-            'length not a multiple of four in block scalar' => array(
+        return [
+            'length not a multiple of four' => ['data: !!binary "SGVsbG8d29ybGQ="', '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/'],
+            'invalid characters' => ['!!binary "SGVsbG8#d29ybGQ="', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'too many equals characters' => ['data: !!binary "SGVsbG8gd29yb==="', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'misplaced equals character' => ['data: !!binary "SGVsbG8gd29ybG=Q"', '/The base64 encoded data \(.*\) contains invalid characters/'],
+            'length not a multiple of four in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8d29ybGQ=
 EOT
                 ,
                 '/The normalized base64 encoded data \(data without whitespace characters\) length must be a multiple of four \(\d+ bytes given\)/',
-            ),
-            'invalid characters in block scalar' => array(
+            ],
+            'invalid characters in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8#d29ybGQ=
 EOT
                 ,
                 '/The base64 encoded data \(.*\) contains invalid characters/',
-            ),
-            'too many equals characters in block scalar' => array(
+            ],
+            'too many equals characters in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8gd29yb===
 EOT
                 ,
                 '/The base64 encoded data \(.*\) contains invalid characters/',
-            ),
-            'misplaced equals character in block scalar' => array(
+            ],
+            'misplaced equals character in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVsbG8gd29ybG=Q
 EOT
                 ,
                 '/The base64 encoded data \(.*\) contains invalid characters/',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testParseDateAsMappingValue()
@@ -1418,7 +1418,7 @@ public function testParseDateAsMappingValue()
         $expectedDate->setDate(2002, 12, 14);
         $expectedDate->setTime(0, 0, 0);
 
-        $this->assertEquals(array('date' => $expectedDate), $this->parser->parse($yaml, Yaml::PARSE_DATETIME));
+        $this->assertEquals(['date' => $expectedDate], $this->parser->parse($yaml, Yaml::PARSE_DATETIME));
     }
 
     /**
@@ -1440,8 +1440,8 @@ public function testParserThrowsExceptionWithCorrectLineNumber($lineNumber, $yam
 
     public function parserThrowsExceptionWithCorrectLineNumberProvider()
     {
-        return array(
-            array(
+        return [
+            [
                 4,
                 <<<'YAML'
 foo:
@@ -1449,8 +1449,8 @@ public function parserThrowsExceptionWithCorrectLineNumberProvider()
         # bar
         bar: "123",
 YAML
-            ),
-            array(
+            ],
+            [
                 5,
                 <<<'YAML'
 foo:
@@ -1459,8 +1459,8 @@ public function parserThrowsExceptionWithCorrectLineNumberProvider()
         # bar
         bar: "123",
 YAML
-            ),
-            array(
+            ],
+            [
                 8,
                 <<<'YAML'
 foo:
@@ -1472,8 +1472,8 @@ public function parserThrowsExceptionWithCorrectLineNumberProvider()
         # bar
         bar: "123",
 YAML
-            ),
-            array(
+            ],
+            [
                 10,
                 <<<'YAML'
 foo:
@@ -1487,8 +1487,8 @@ public function parserThrowsExceptionWithCorrectLineNumberProvider()
         # bar
         bar: "123",
 YAML
-            ),
-        );
+            ],
+        ];
     }
 
     public function testParseMultiLineQuotedString()
@@ -1501,7 +1501,7 @@ public function testParseMultiLineQuotedString()
 bar: baz
 EOT;
 
-        $this->assertSame(array('foo' => 'bar baz foobar foo', 'bar' => 'baz'), $this->parser->parse($yaml));
+        $this->assertSame(['foo' => 'bar baz foobar foo', 'bar' => 'baz'], $this->parser->parse($yaml));
     }
 
     public function testMultiLineQuotedStringWithTrailingBackslash()
@@ -1512,7 +1512,7 @@ public function testMultiLineQuotedStringWithTrailingBackslash()
     bar"
 YAML;
 
-        $this->assertSame(array('foobar' => 'foobar'), $this->parser->parse($yaml));
+        $this->assertSame(['foobar' => 'foobar'], $this->parser->parse($yaml));
     }
 
     public function testCommentCharactersInMultiLineQuotedStrings()
@@ -1523,12 +1523,12 @@ public function testCommentCharactersInMultiLineQuotedStrings()
       #bar'
     bar: baz
 YAML;
-        $expected = array(
-            'foo' => array(
+        $expected = [
+            'foo' => [
                 'foobar' => 'foo #bar',
                 'bar' => 'baz',
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -1540,9 +1540,9 @@ public function testBlankLinesInQuotedMultiLineString()
 
     bar'
 YAML;
-        $expected = array(
+        $expected = [
             'foobar' => "foo\nbar",
-        );
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -1557,7 +1557,7 @@ public function testParseMultiLineUnquotedString()
 bar: baz
 EOT;
 
-        $this->assertSame(array('foo' => 'bar baz foobar foo', 'bar' => 'baz'), $this->parser->parse($yaml));
+        $this->assertSame(['foo' => 'bar baz foobar foo', 'bar' => 'baz'], $this->parser->parse($yaml));
     }
 
     public function testParseMultiLineString()
@@ -1575,7 +1575,7 @@ public function testParseMultiLineMappingValue($yaml, $expected, $parseError)
 
     public function multiLineDataProvider()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<'EOF'
 foo:
@@ -1585,15 +1585,15 @@ public function multiLineDataProvider()
     two
     three
 EOF;
-        $expected = array(
-            'foo' => array(
-                array(
+        $expected = [
+            'foo' => [
+                [
                     'bar' => "one\ntwo three",
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         $yaml = <<<'EOF'
 bar
@@ -1601,7 +1601,7 @@ public function multiLineDataProvider()
 EOF;
         $expected = 'bar "foo"';
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         $yaml = <<<'EOF'
 bar
@@ -1609,7 +1609,7 @@ public function multiLineDataProvider()
 EOF;
         $expected = 'bar "foo';
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         $yaml = <<<'EOF'
 bar
@@ -1618,7 +1618,7 @@ public function multiLineDataProvider()
 EOF;
         $expected = "bar\n'foo'";
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         $yaml = <<<'EOF'
 bar
@@ -1627,14 +1627,14 @@ public function multiLineDataProvider()
 EOF;
         $expected = "bar\nfoo'";
 
-        $tests[] = array($yaml, $expected, false);
+        $tests[] = [$yaml, $expected, false];
 
         return $tests;
     }
 
     public function testTaggedInlineMapping()
     {
-        $this->assertEquals(new TaggedValue('foo', array('foo' => 'bar')), $this->parser->parse('!foo {foo: bar}', Yaml::PARSE_CUSTOM_TAGS));
+        $this->assertEquals(new TaggedValue('foo', ['foo' => 'bar']), $this->parser->parse('!foo {foo: bar}', Yaml::PARSE_CUSTOM_TAGS));
     }
 
     /**
@@ -1647,48 +1647,48 @@ public function testCustomTagSupport($expected, $yaml)
 
     public function taggedValuesProvider()
     {
-        return array(
-            'scalars' => array(
-                array(
+        return [
+            'scalars' => [
+                [
                     'foo' => new TaggedValue('inline', 'bar'),
                     'quz' => new TaggedValue('long', 'this is a long text'),
-                ),
+                ],
                 <<<YAML
 foo: !inline bar
 quz: !long >
   this is a long
   text
 YAML
-            ),
-            'sequences' => array(
-                array(new TaggedValue('foo', array('yaml')), new TaggedValue('quz', array('bar'))),
+            ],
+            'sequences' => [
+                [new TaggedValue('foo', ['yaml']), new TaggedValue('quz', ['bar'])],
                 <<<YAML
 - !foo
     - yaml
 - !quz [bar]
 YAML
-            ),
-            'mappings' => array(
-                new TaggedValue('foo', array('foo' => new TaggedValue('quz', array('bar')), 'quz' => new TaggedValue('foo', array('quz' => 'bar')))),
+            ],
+            'mappings' => [
+                new TaggedValue('foo', ['foo' => new TaggedValue('quz', ['bar']), 'quz' => new TaggedValue('foo', ['quz' => 'bar'])]),
                 <<<YAML
 !foo
 foo: !quz [bar]
 quz: !foo
    quz: bar
 YAML
-            ),
-            'inline' => array(
-                array(new TaggedValue('foo', array('foo', 'bar')), new TaggedValue('quz', array('foo' => 'bar', 'quz' => new TaggedValue('bar', array('one' => 'bar'))))),
+            ],
+            'inline' => [
+                [new TaggedValue('foo', ['foo', 'bar']), new TaggedValue('quz', ['foo' => 'bar', 'quz' => new TaggedValue('bar', ['one' => 'bar'])])],
                 <<<YAML
 - !foo [foo, bar]
 - !quz {foo: bar, quz: !bar {one: bar}}
 YAML
-            ),
-            'spaces-around-tag-value-in-sequence' => array(
-                array(new TaggedValue('foo', 'bar')),
+            ],
+            'spaces-around-tag-value-in-sequence' => [
+                [new TaggedValue('foo', 'bar')],
                 '[ !foo bar ]',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testNonSpecificTagSupport()
@@ -1797,7 +1797,7 @@ private function loadTestsFromFixtureFiles($testsFile)
     {
         $parser = new Parser();
 
-        $tests = array();
+        $tests = [];
         $files = $parser->parseFile(__DIR__.'/Fixtures/'.$testsFile);
         foreach ($files as $file) {
             $yamls = file_get_contents(__DIR__.'/Fixtures/'.$file.'.yml');
@@ -1814,7 +1814,7 @@ private function loadTestsFromFixtureFiles($testsFile)
                 } else {
                     eval('$expected = '.trim($test['php']).';');
 
-                    $tests[] = array(var_export($expected, true), $test['yaml'], $test['test']);
+                    $tests[] = [var_export($expected, true), $test['yaml'], $test['test']];
                 }
             }
         }
@@ -1825,7 +1825,7 @@ private function loadTestsFromFixtureFiles($testsFile)
     public function testCanParseVeryLongValue()
     {
         $longStringWithSpaces = str_repeat('xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ', 20000);
-        $trickyVal = array('x' => $longStringWithSpaces);
+        $trickyVal = ['x' => $longStringWithSpaces];
 
         $yamlString = Yaml::dump($trickyVal);
         $arrayFromYaml = $this->parser->parse($yamlString);
@@ -1863,16 +1863,16 @@ public function testPhpConstantTagMappingKey()
             - !php/const 'Symfony\Component\Yaml\Tests\B::BAR'
         to: !php/const 'Symfony\Component\Yaml\Tests\B::BAZ'
 YAML;
-        $expected = array(
-            'transitions' => array(
-                'foo' => array(
-                    'from' => array(
+        $expected = [
+            'transitions' => [
+                'foo' => [
+                    'from' => [
                         'bar',
-                    ),
+                    ],
                     'to' => 'baz',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml, Yaml::PARSE_CONSTANT));
     }
@@ -1893,23 +1893,23 @@ public function testMergeKeysWhenMappingsAreParsedAsObjects()
     bar: ~
     <<: [*FOO, *BAR]
 YAML;
-        $expected = (object) array(
-            'foo' => (object) array(
+        $expected = (object) [
+            'foo' => (object) [
                 'bar' => 1,
-            ),
-            'bar' => (object) array(
+            ],
+            'bar' => (object) [
                 'baz' => 2,
                 'bar' => 1,
-            ),
-            'baz' => (object) array(
+            ],
+            'baz' => (object) [
                 'baz_foo' => 3,
                 'baz_bar' => 4,
-            ),
-            'foobar' => (object) array(
+            ],
+            'foobar' => (object) [
                 'bar' => null,
                 'baz' => 2,
-            ),
-        );
+            ],
+        ];
 
         $this->assertEquals($expected, $this->parser->parse($yaml, Yaml::PARSE_OBJECT_FOR_MAP));
     }
@@ -1967,18 +1967,18 @@ public function testParseReferencesOnMergeKeys()
     d: quux
     <<: *quux
 YAML;
-        $expected = array(
-            'mergekeyrefdef' => array(
+        $expected = [
+            'mergekeyrefdef' => [
                 'a' => 'foo',
                 'b' => 'bar',
                 'c' => 'baz',
-            ),
-            'mergekeyderef' => array(
+            ],
+            'mergekeyderef' => [
                 'd' => 'quux',
                 'b' => 'bar',
                 'c' => 'baz',
-            ),
-        );
+            ],
+        ];
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
@@ -1995,18 +1995,18 @@ public function testParseReferencesOnMergeKeysWithMappingsParsedAsObjects()
     d: quux
     <<: *quux
 YAML;
-        $expected = (object) array(
-            'mergekeyrefdef' => (object) array(
+        $expected = (object) [
+            'mergekeyrefdef' => (object) [
                 'a' => 'foo',
                 'b' => 'bar',
                 'c' => 'baz',
-            ),
-            'mergekeyderef' => (object) array(
+            ],
+            'mergekeyderef' => (object) [
                 'd' => 'quux',
                 'b' => 'bar',
                 'c' => 'baz',
-            ),
-        );
+            ],
+        ];
 
         $this->assertEquals($expected, $this->parser->parse($yaml, Yaml::PARSE_OBJECT_FOR_MAP));
     }
@@ -2035,7 +2035,7 @@ public function testDetectCircularReferences($yaml)
 
     public function circularReferenceProvider()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<YAML
 foo:
@@ -2044,7 +2044,7 @@ public function circularReferenceProvider()
         bar: foobar
         baz: *foo
 YAML;
-        $tests['sequence'] = array($yaml);
+        $tests['sequence'] = [$yaml];
 
         $yaml = <<<YAML
 foo: &foo
@@ -2052,7 +2052,7 @@ public function circularReferenceProvider()
         foobar: baz
         baz: *foo
 YAML;
-        $tests['mapping'] = array($yaml);
+        $tests['mapping'] = [$yaml];
 
         $yaml = <<<YAML
 foo: &foo
@@ -2060,7 +2060,7 @@ public function circularReferenceProvider()
         foobar: baz
         <<: *foo
 YAML;
-        $tests['mapping with merge key'] = array($yaml);
+        $tests['mapping with merge key'] = [$yaml];
 
         return $tests;
     }
@@ -2075,7 +2075,7 @@ public function testParseIndentedMappings($yaml, $expected)
 
     public function indentedMappingData()
     {
-        $tests = array();
+        $tests = [];
 
         $yaml = <<<YAML
 foo:
@@ -2083,15 +2083,15 @@ public function indentedMappingData()
     # A comment
     baz: "foobaz"
 YAML;
-        $expected = array(
-            'foo' => array(
-                array(
+        $expected = [
+            'foo' => [
+                [
                     'bar' => 'foobar',
                     'baz' => 'foobaz',
-                ),
-            ),
-        );
-        $tests['comment line is first line in indented block'] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests['comment line is first line in indented block'] = [$yaml, $expected];
 
         $yaml = <<<YAML
 foo:
@@ -2099,42 +2099,42 @@ public function indentedMappingData()
         # comment
         baz: [1, 2, 3]
 YAML;
-        $expected = array(
-            'foo' => array(
-                array(
-                    'bar' => array(
-                        'baz' => array(1, 2, 3),
-                    ),
-                ),
-            ),
-        );
-        $tests['mapping value on new line starting with a comment line'] = array($yaml, $expected);
+        $expected = [
+            'foo' => [
+                [
+                    'bar' => [
+                        'baz' => [1, 2, 3],
+                    ],
+                ],
+            ],
+        ];
+        $tests['mapping value on new line starting with a comment line'] = [$yaml, $expected];
 
         $yaml = <<<YAML
 foo:
   -
     bar: foobar
 YAML;
-        $expected = array(
-            'foo' => array(
-                array(
+        $expected = [
+            'foo' => [
+                [
                     'bar' => 'foobar',
-                ),
-            ),
-        );
-        $tests['mapping in sequence starting on a new line'] = array($yaml, $expected);
+                ],
+            ],
+        ];
+        $tests['mapping in sequence starting on a new line'] = [$yaml, $expected];
 
         $yaml = <<<YAML
 foo:
 
     bar: baz
 YAML;
-        $expected = array(
-            'foo' => array(
+        $expected = [
+            'foo' => [
                 'bar' => 'baz',
-            ),
-        );
-        $tests['blank line at the beginning of an indented mapping value'] = array($yaml, $expected);
+            ],
+        ];
+        $tests['blank line at the beginning of an indented mapping value'] = [$yaml, $expected];
 
         return $tests;
     }

From 44056b002a2f513328adc0855c136e5359dc9c0d Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 19:56:49 +0100
Subject: [PATCH 043/103] fixed CS

---
 UPGRADE-4.0.md                                |  30 +--
 .../CompilerPass/RegisterMappingsPass.php     |   2 +-
 .../Kernel/MicroKernelTrait.php               |   4 +-
 src/Symfony/Component/BrowserKit/Client.php   |   2 +-
 .../Component/Cache/Adapter/PdoAdapter.php    |   2 +-
 .../Component/Cache/Simple/PdoCache.php       |   2 +-
 .../Resource/ReflectionClassResourceTest.php  |  10 +-
 .../Tests/Input/InputDefinitionTest.php       |   2 +-
 .../Debug/Tests/DebugClassLoaderTest.php      |  48 ++---
 .../DependencyInjection/ContainerBuilder.php  |   4 +-
 .../DependencyInjection/Dumper/PhpDumper.php  |  45 ++---
 .../Fixtures/includes/autowiring_classes.php  |   2 +-
 .../Tests/Fixtures/php/services9_as_files.txt |  46 ++---
 src/Symfony/Component/DomCrawler/Crawler.php  |   2 +-
 .../Component/Filesystem/Filesystem.php       |   2 +-
 .../Component/HttpFoundation/HeaderUtils.php  |   8 +-
 .../Session/Storage/NativeSessionStorage.php  |   2 +-
 .../Controller/ControllerResolver.php         |   2 +-
 .../Controller/ControllerResolverTest.php     |   2 +-
 src/Symfony/Component/Process/CHANGELOG.md    |   4 +-
 .../Component/Process/Tests/ProcessTest.php   |   4 +-
 .../Matcher/Dumper/PhpMatcherDumper.php       |  44 ++---
 src/Symfony/Component/Serializer/CHANGELOG.md |   2 +-
 .../Serializer/Encoder/XmlEncoder.php         |   2 +-
 .../Translation/Tests/fixtures/resources.php  |   4 +-
 .../Fixtures/YtsSpecificationExamples.yml     | 186 +++++++++---------
 .../Yaml/Tests/Fixtures/YtsTypeTransfers.yml  |  50 ++---
 27 files changed, 257 insertions(+), 256 deletions(-)

diff --git a/UPGRADE-4.0.md b/UPGRADE-4.0.md
index fe43d0cf9973..23ed6fbd3353 100644
--- a/UPGRADE-4.0.md
+++ b/UPGRADE-4.0.md
@@ -92,7 +92,7 @@ Console
    ```php
    $commandTester = new CommandTester($command);
 
-   $commandTester->setInputs(array('AppBundle', 'Yes'));
+   $commandTester->setInputs(['AppBundle', 'Yes']);
 
    $commandTester->execute();
    ```
@@ -343,23 +343,23 @@ Form
 
    Before:
    ```php
-   $builder->add('custom_locales', LocaleType::class, array(
+   $builder->add('custom_locales', LocaleType::class, [
        'choices' => $availableLocales,
-   ));
+   ]);
    ```
 
    After:
    ```php
-   $builder->add('custom_locales', LocaleType::class, array(
+   $builder->add('custom_locales', LocaleType::class, [
        'choices' => $availableLocales,
        'choice_loader' => null,
-   ));
+   ]);
    // or
-   $builder->add('custom_locales', LocaleType::class, array(
+   $builder->add('custom_locales', LocaleType::class, [
        'choice_loader' => new CallbackChoiceLoader(function () {
            return $this->getAvailableLocales();
        }),
-   ));
+   ]);
    ```
 
  * Removed `ChoiceLoaderInterface` implementation in `TimezoneType`. Use the "choice_loader" option instead.
@@ -844,7 +844,7 @@ TwigBridge
    use Symfony\Bridge\Twig\Form\TwigRendererEngine;
 
    // ...
-   $rendererEngine = new TwigRendererEngine(array('form_div_layout.html.twig'));
+   $rendererEngine = new TwigRendererEngine(['form_div_layout.html.twig']);
    $rendererEngine->setEnvironment($twig);
    $twig->addExtension(new FormExtension(new TwigRenderer($rendererEngine, $csrfTokenManager)));
    ```
@@ -852,12 +852,12 @@ TwigBridge
    After:
 
    ```php
-   $rendererEngine = new TwigRendererEngine(array('form_div_layout.html.twig'), $twig);
-   $twig->addRuntimeLoader(new \Twig_FactoryRuntimeLoader(array(
+   $rendererEngine = new TwigRendererEngine(['form_div_layout.html.twig'], $twig);
+   $twig->addRuntimeLoader(new \Twig_FactoryRuntimeLoader([
        TwigRenderer::class => function () use ($rendererEngine, $csrfTokenManager) {
            return new TwigRenderer($rendererEngine, $csrfTokenManager);
        },
-   )));
+   ]));
    $twig->addExtension(new FormExtension());
    ```
 
@@ -1092,13 +1092,13 @@ Yaml
    Before:
 
    ```php
-   Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, true);
+   Yaml::dump(['foo' => new A(), 'bar' => 1], 0, 0, true);
    ```
 
    After:
 
    ```php
-   Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE);
+   Yaml::dump(['foo' => new A(), 'bar' => 1], 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE);
    ```
 
  * Removed support for passing `true`/`false` as the fifth argument to the
@@ -1107,13 +1107,13 @@ Yaml
    Before:
 
    ```php
-   Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, false, true);
+   Yaml::dump(['foo' => new A(), 'bar' => 1], 0, 0, false, true);
    ```
 
    After:
 
    ```php
-   Yaml::dump(array('foo' => new A(), 'bar' => 1), 0, 0, false, Yaml::DUMP_OBJECT);
+   Yaml::dump(['foo' => new A(), 'bar' => 1], 0, 0, false, Yaml::DUMP_OBJECT);
    ```
 
  * The `!!php/object` tag to indicate dumped PHP objects was removed in favor of
diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
index 01894d41bf0a..5c33f71f0446 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterMappingsPass.php
@@ -50,7 +50,7 @@ abstract class RegisterMappingsPass implements CompilerPassInterface
     /**
      * List of potential container parameters that hold the object manager name
      * to register the mappings with the correct metadata driver, for example
-     * array('acme.manager', 'doctrine.default_entity_manager').
+     * ['acme.manager', 'doctrine.default_entity_manager'].
      *
      * @var string[]
      */
diff --git a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
index c4334ceb6a07..3919737e44da 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Kernel/MicroKernelTrait.php
@@ -39,9 +39,9 @@ abstract protected function configureRoutes(RouteCollectionBuilder $routes);
      *
      * You can register extensions:
      *
-     *     $c->loadFromExtension('framework', array(
+     *     $c->loadFromExtension('framework', [
      *         'secret' => '%secret%'
-     *     ));
+     *     ]);
      *
      * Or services:
      *
diff --git a/src/Symfony/Component/BrowserKit/Client.php b/src/Symfony/Component/BrowserKit/Client.php
index f93237bf639e..40d9cf5a8021 100644
--- a/src/Symfony/Component/BrowserKit/Client.php
+++ b/src/Symfony/Component/BrowserKit/Client.php
@@ -290,7 +290,7 @@ public function click(Link $link)
      *
      * @return Crawler
      */
-    public function submit(Form $form, array $values = []/*, array $serverParameters = array()*/)
+    public function submit(Form $form, array $values = []/*, array $serverParameters = []*/)
     {
         $form->setValues($values);
         $serverParameters = 2 < \func_num_args() ? func_get_arg(2) : [];
diff --git a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
index c92904beda9c..7784e2e2b819 100644
--- a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
@@ -35,7 +35,7 @@ class PdoAdapter extends AbstractAdapter implements PruneableInterface
      *  * db_time_col: The column where to store the timestamp [default: item_time]
      *  * db_username: The username when lazy-connect [default: '']
      *  * db_password: The password when lazy-connect [default: '']
-     *  * db_connection_options: An array of driver-specific connection options [default: array()]
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
      *
      * @param \PDO|Connection|string $connOrDsn a \PDO or Connection instance or DSN string or null
      *
diff --git a/src/Symfony/Component/Cache/Simple/PdoCache.php b/src/Symfony/Component/Cache/Simple/PdoCache.php
index 02df761fc418..a1325a202b29 100644
--- a/src/Symfony/Component/Cache/Simple/PdoCache.php
+++ b/src/Symfony/Component/Cache/Simple/PdoCache.php
@@ -33,7 +33,7 @@ class PdoCache extends AbstractCache implements PruneableInterface
      *  * db_time_col: The column where to store the timestamp [default: item_time]
      *  * db_username: The username when lazy-connect [default: '']
      *  * db_password: The password when lazy-connect [default: '']
-     *  * db_connection_options: An array of driver-specific connection options [default: array()]
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
      *
      * @param \PDO|Connection|string $connOrDsn a \PDO or Connection instance or DSN string or null
      *
diff --git a/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php b/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
index 61f70ebc86f8..abc461cd7c89 100644
--- a/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
+++ b/src/Symfony/Component/Config/Tests/Resource/ReflectionClassResourceTest.php
@@ -71,7 +71,7 @@ public function testHashedSignature($changeExpected, $changedLine, $changedCode)
 /* 2*/  {
 /* 3*/      const FOO = 123;
 /* 4*/
-/* 5*/      public $pub = array();
+/* 5*/      public $pub = [];
 /* 6*/
 /* 7*/      protected $prot;
 /* 8*/
@@ -79,7 +79,7 @@ public function testHashedSignature($changeExpected, $changedLine, $changedCode)
 /*10*/
 /*11*/      public function pub($arg = null) {}
 /*12*/
-/*13*/      protected function prot($a = array()) {}
+/*13*/      protected function prot($a = []) {}
 /*14*/
 /*15*/      private function priv() {}
 /*16*/  }
@@ -119,8 +119,8 @@ public function provideHashedSignature()
         yield [1, 3, 'const FOO = 456;'];
         yield [1, 3, 'const BAR = 123;'];
         yield [1, 4, '/** pub docblock */'];
-        yield [1, 5, 'protected $pub = array();'];
-        yield [1, 5, 'public $pub = array(123);'];
+        yield [1, 5, 'protected $pub = [];'];
+        yield [1, 5, 'public $pub = [123];'];
         yield [1, 6, '/** prot docblock */'];
         yield [1, 7, 'private $prot;'];
         yield [0, 8, '/** priv docblock */'];
@@ -130,7 +130,7 @@ public function provideHashedSignature()
         yield [1, 11, 'public function pub($arg = null): Foo {}'];
         yield [0, 11, "public function pub(\$arg = null) {\nreturn 123;\n}"];
         yield [1, 12, '/** prot docblock */'];
-        yield [1, 13, 'protected function prot($a = array(123)) {}'];
+        yield [1, 13, 'protected function prot($a = [123]) {}'];
         yield [0, 14, '/** priv docblock */'];
         yield [0, 15, ''];
     }
diff --git a/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php b/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
index a607e4c47c85..aca004d53e8e 100644
--- a/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/InputDefinitionTest.php
@@ -186,7 +186,7 @@ public function testGetArgumentDefaults()
             new InputArgument('foo1', InputArgument::OPTIONAL),
             new InputArgument('foo2', InputArgument::OPTIONAL, '', 'default'),
             new InputArgument('foo3', InputArgument::OPTIONAL | InputArgument::IS_ARRAY),
-        //  new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', array(1, 2)),
+        //  new InputArgument('foo4', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, '', [1, 2]),
         ]);
         $this->assertEquals(['foo1' => null, 'foo2' => 'default', 'foo3' => []], $definition->getArgumentDefaults(), '->getArgumentDefaults() return the default values for each argument');
 
diff --git a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
index 4a2375549d59..c64ec53e9ff8 100644
--- a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
+++ b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
@@ -27,14 +27,14 @@ protected function setUp()
     {
         $this->errorReporting = error_reporting(E_ALL);
         $this->loader = new ClassLoader();
-        spl_autoload_register(array($this->loader, 'loadClass'), true, true);
+        spl_autoload_register([$this->loader, 'loadClass'], true, true);
         DebugClassLoader::enable();
     }
 
     protected function tearDown()
     {
         DebugClassLoader::disable();
-        spl_autoload_unregister(array($this->loader, 'loadClass'));
+        spl_autoload_unregister([$this->loader, 'loadClass']);
         error_reporting($this->errorReporting);
     }
 
@@ -136,20 +136,20 @@ class_exists('Test\\'.__NAMESPACE__.'\\'.$class, true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_DEPRECATED,
             'message' => 'The "Test\Symfony\Component\Debug\Tests\\'.$class.'" class '.$type.' "Symfony\Component\Debug\Tests\Fixtures\\'.$super.'" that is deprecated but this is a test deprecation notice.',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
 
     public function provideDeprecatedSuper()
     {
-        return array(
-            array('DeprecatedInterfaceClass', 'DeprecatedInterface', 'implements'),
-            array('DeprecatedParentClass', 'DeprecatedClass', 'extends'),
-        );
+        return [
+            ['DeprecatedInterfaceClass', 'DeprecatedInterface', 'implements'],
+            ['DeprecatedParentClass', 'DeprecatedClass', 'extends'],
+        ];
     }
 
     public function testInterfaceExtendsDeprecatedInterface()
@@ -166,10 +166,10 @@ class_exists('Test\\'.__NAMESPACE__.'\\NonDeprecatedInterfaceClass', true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_NOTICE,
             'message' => '',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
@@ -188,10 +188,10 @@ class_exists('Symfony\Bridge\Debug\Tests\Fixtures\ExtendsDeprecatedParent', true
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_NOTICE,
             'message' => '',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
@@ -210,17 +210,17 @@ class_exists('Test\\'.__NAMESPACE__.'\\ExtendsFinalClass', true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $xError = array(
+        $xError = [
             'type' => E_USER_DEPRECATED,
             'message' => 'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass" class is considered final. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass".',
-        );
+        ];
 
         $this->assertSame($xError, $lastError);
     }
 
     public function testExtendedFinalMethod()
     {
-        $deprecations = array();
+        $deprecations = [];
         set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
         $e = error_reporting(E_USER_DEPRECATED);
 
@@ -229,10 +229,10 @@ class_exists(__NAMESPACE__.'\\Fixtures\\ExtendedFinalMethod', true);
         error_reporting($e);
         restore_error_handler();
 
-        $xError = array(
+        $xError = [
             'The "Symfony\Component\Debug\Tests\Fixtures\FinalMethod::finalMethod()" method is considered final. It may change without further notice as of its next major version. You should not extend it from "Symfony\Component\Debug\Tests\Fixtures\ExtendedFinalMethod".',
             'The "Symfony\Component\Debug\Tests\Fixtures\FinalMethod::finalMethod2()" method is considered final. It may change without further notice as of its next major version. You should not extend it from "Symfony\Component\Debug\Tests\Fixtures\ExtendedFinalMethod".',
-        );
+        ];
 
         $this->assertSame($xError, $deprecations);
     }
@@ -251,12 +251,12 @@ class_exists('Test\\'.__NAMESPACE__.'\\ExtendsAnnotatedClass', true);
         $lastError = error_get_last();
         unset($lastError['file'], $lastError['line']);
 
-        $this->assertSame(array('type' => E_USER_NOTICE, 'message' => ''), $lastError);
+        $this->assertSame(['type' => E_USER_NOTICE, 'message' => ''], $lastError);
     }
 
     public function testInternalsUse()
     {
-        $deprecations = array();
+        $deprecations = [];
         set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
         $e = error_reporting(E_USER_DEPRECATED);
 
@@ -265,17 +265,17 @@ class_exists('Test\\'.__NAMESPACE__.'\\ExtendsInternals', true);
         error_reporting($e);
         restore_error_handler();
 
-        $this->assertSame($deprecations, array(
+        $this->assertSame($deprecations, [
             'The "Symfony\Component\Debug\Tests\Fixtures\InternalInterface" interface is considered internal. It may change without further notice. You should not use it from "Test\Symfony\Component\Debug\Tests\ExtendsInternalsParent".',
             'The "Symfony\Component\Debug\Tests\Fixtures\InternalClass" class is considered internal. It may change without further notice. You should not use it from "Test\Symfony\Component\Debug\Tests\ExtendsInternalsParent".',
             'The "Symfony\Component\Debug\Tests\Fixtures\InternalTrait" trait is considered internal. It may change without further notice. You should not use it from "Test\Symfony\Component\Debug\Tests\ExtendsInternals".',
             'The "Symfony\Component\Debug\Tests\Fixtures\InternalClass::internalMethod()" method is considered internal. It may change without further notice. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsInternals".',
-        ));
+        ]);
     }
 
     public function testUseTraitWithInternalMethod()
     {
-        $deprecations = array();
+        $deprecations = [];
         set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
         $e = error_reporting(E_USER_DEPRECATED);
 
@@ -284,7 +284,7 @@ class_exists('Test\\'.__NAMESPACE__.'\\UseTraitWithInternalMethod', true);
         error_reporting($e);
         restore_error_handler();
 
-        $this->assertSame(array(), $deprecations);
+        $this->assertSame([], $deprecations);
     }
 }
 
@@ -296,7 +296,7 @@ public function loadClass($class)
 
     public function getClassMap()
     {
-        return array(__NAMESPACE__.'\Fixtures\NotPSR0bis' => __DIR__.'/Fixtures/notPsr0Bis.php');
+        return [__NAMESPACE__.'\Fixtures\NotPSR0bis' => __DIR__.'/Fixtures/notPsr0Bis.php'];
     }
 
     public function findFile($class)
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index c4c0852c6a41..d5e2e946a9bd 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -616,7 +616,7 @@ private function doGet($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_
      * the parameters passed to the container constructor to have precedence
      * over the loaded ones.
      *
-     *     $container = new ContainerBuilder(new ParameterBag(array('foo' => 'bar')));
+     *     $container = new ContainerBuilder(new ParameterBag(['foo' => 'bar']));
      *     $loader = new LoaderXXX($container);
      *     $loader->load('resource_name');
      *     $container->register('foo', 'stdClass');
@@ -1243,7 +1243,7 @@ private function doResolveServices($value, array &$inlineServices = [], $isConst
      *
      * Example:
      *
-     *     $container->register('foo')->addTag('my.tag', array('hello' => 'world'));
+     *     $container->register('foo')->addTag('my.tag', ['hello' => 'world']);
      *
      *     $serviceIds = $container->findTaggedServiceIds('my.tag');
      *     foreach ($serviceIds as $serviceId => $tags) {
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index a45ef188d40b..5652d457e492 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -223,11 +223,11 @@ public function dump(array $options = [])
             }
             if ($ids = array_keys($ids)) {
                 sort($ids);
-                $c = "<?php\n\nreturn array(\n";
+                $c = "<?php\n\nreturn [\n";
                 foreach ($ids as $id) {
                     $c .= '    '.$this->doExport($id)." => true,\n";
                 }
-                $files['removed-ids.php'] = $c .= ");\n";
+                $files['removed-ids.php'] = $c .= "];\n";
             }
 
             foreach ($this->generateServiceFiles() as $file => $c) {
@@ -266,11 +266,11 @@ public function dump(array $options = [])
     \\class_alias(\\Container{$hash}\\{$options['class']}::class, {$options['class']}::class, false);
 }
 
-return new \\Container{$hash}\\{$options['class']}(array(
+return new \\Container{$hash}\\{$options['class']}([
     'container.build_hash' => '$hash',
     'container.build_id' => '$id',
     'container.build_time' => $time,
-), __DIR__.\\DIRECTORY_SEPARATOR.'Container{$hash}');
+], __DIR__.\\DIRECTORY_SEPARATOR.'Container{$hash}');
 
 EOF;
         } else {
@@ -913,12 +913,12 @@ private function startClass(string $class, string $baseClass, string $baseClassW
 class $class extends $baseClass
 {
     private \$parameters;
-    private \$targetDirs = array();
+    private \$targetDirs = [];
 
     /*{$this->docStar}
      * @internal but protected for BC on cache:clear
      */
-    protected \$privates = array();
+    protected \$privates = [];
 
     public function __construct()
     {
@@ -936,7 +936,7 @@ public function __construct()
         }
         if ($this->asFiles) {
             $code = str_replace('$parameters', "\$buildParameters;\n    private \$containerDir;\n    private \$parameters", $code);
-            $code = str_replace('__construct()', '__construct(array $buildParameters = array(), $containerDir = __DIR__)', $code);
+            $code = str_replace('__construct()', '__construct(array $buildParameters = [], $containerDir = __DIR__)', $code);
             $code .= "        \$this->buildParameters = \$buildParameters;\n";
             $code .= "        \$this->containerDir = \$containerDir;\n";
         }
@@ -956,7 +956,7 @@ public function __construct()
         if ($this->container->getParameterBag()->all()) {
             $code .= "        \$this->parameters = \$this->getDefaultParameters();\n\n";
         }
-        $code .= "        \$this->services = \$this->privates = array();\n";
+        $code .= "        \$this->services = \$this->privates = [];\n";
 
         $code .= $this->addSyntheticIds();
         $code .= $this->addMethodMap();
@@ -968,7 +968,7 @@ public function __construct()
 
     public function reset()
     {
-        \$this->privates = array();
+        \$this->privates = [];
         parent::reset();
     }
 
@@ -1036,7 +1036,7 @@ private function addSyntheticIds(): string
             }
         }
 
-        return $code ? "        \$this->syntheticIds = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->syntheticIds = [\n{$code}        ];\n" : '';
     }
 
     private function addRemovedIds(): string
@@ -1063,7 +1063,7 @@ private function addRemovedIds(): string
                 $code .= '            '.$this->doExport($id)." => true,\n";
             }
 
-            $code = "array(\n{$code}        )";
+            $code = "[\n{$code}        ]";
         }
 
         return <<<EOF
@@ -1087,7 +1087,7 @@ private function addMethodMap(): string
             }
         }
 
-        return $code ? "        \$this->methodMap = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->methodMap = [\n{$code}        ];\n" : '';
     }
 
     private function addFileMap(): string
@@ -1101,16 +1101,16 @@ private function addFileMap(): string
             }
         }
 
-        return $code ? "        \$this->fileMap = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->fileMap = [\n{$code}        ];\n" : '';
     }
 
     private function addAliases(): string
     {
         if (!$aliases = $this->container->getAliases()) {
-            return "\n        \$this->aliases = array();\n";
+            return "\n        \$this->aliases = [];\n";
         }
 
-        $code = "        \$this->aliases = array(\n";
+        $code = "        \$this->aliases = [\n";
         ksort($aliases);
         foreach ($aliases as $alias => $id) {
             $id = (string) $id;
@@ -1120,7 +1120,7 @@ private function addAliases(): string
             $code .= '            '.$this->doExport($alias).' => '.$this->doExport($id).",\n";
         }
 
-        return $code."        );\n";
+        return $code."        ];\n";
     }
 
     private function addInlineRequires(): string
@@ -1168,7 +1168,7 @@ private function addDefaultParametersMethod(): string
                 throw new InvalidArgumentException(sprintf('Parameter name cannot use env parameters: %s.', $resolvedKey));
             }
             $export = $this->exportParameters([$value]);
-            $export = explode('0 => ', substr(rtrim($export, " )\n"), 7, -1), 2);
+            $export = explode('0 => ', substr(rtrim($export, " ]\n"), 2, -1), 2);
 
             if (preg_match("/\\\$this->(?:getEnv\('(?:\w++:)*+\w++'\)|targetDirs\[\d++\])/", $export[1])) {
                 $dynamicPhp[$key] = sprintf('%scase %s: $value = %s; break;', $export[0], $this->export($key), $export[1]);
@@ -1176,7 +1176,8 @@ private function addDefaultParametersMethod(): string
                 $php[] = sprintf('%s%s => %s,', $export[0], $this->export($key), $export[1]);
             }
         }
-        $parameters = sprintf("array(\n%s\n%s)", implode("\n", $php), str_repeat(' ', 8));
+
+        $parameters = sprintf("[\n%s\n%s]", implode("\n", $php), str_repeat(' ', 8));
 
         $code = <<<'EOF'
 
@@ -1246,14 +1247,14 @@ public function getParameterBag()
 EOF;
             $getDynamicParameter = sprintf($getDynamicParameter, implode("\n", $dynamicPhp));
         } else {
-            $loadedDynamicParameters = 'array()';
+            $loadedDynamicParameters = '[]';
             $getDynamicParameter = str_repeat(' ', 8).'throw new InvalidArgumentException(sprintf(\'The dynamic parameter "%s" must be defined.\', $name));';
         }
 
         $code .= <<<EOF
 
     private \$loadedDynamicParameters = {$loadedDynamicParameters};
-    private \$dynamicParameters = array();
+    private \$dynamicParameters = [];
 
     /*{$this->docStar}
      * Computes a dynamic parameter.
@@ -1310,7 +1311,7 @@ private function exportParameters(array $parameters, string $path = '', int $ind
             $php[] = sprintf('%s%s => %s,', str_repeat(' ', $indent), $this->export($key), $value);
         }
 
-        return sprintf("array(\n%s\n%s)", implode("\n", $php), str_repeat(' ', $indent - 4));
+        return sprintf("[\n%s\n%s]", implode("\n", $php), str_repeat(' ', $indent - 4));
     }
 
     private function endClass(): string
@@ -1404,7 +1405,7 @@ private function dumpValue($value, bool $interpolate = true): string
                 $code[] = sprintf('%s => %s', $this->dumpValue($k, $interpolate), $this->dumpValue($v, $interpolate));
             }
 
-            return sprintf('array(%s)', implode(', ', $code));
+            return sprintf('[%s]', implode(', ', $code));
         } elseif ($value instanceof ArgumentInterface) {
             $scope = [$this->definitionVariables, $this->referenceVariables];
             $this->definitionVariables = $this->referenceVariables = null;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
index 93eab8c50f9a..a2f8721683b6 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
@@ -361,7 +361,7 @@ interface DecoratorInterface
 
 class Decorated implements DecoratorInterface
 {
-    public function __construct($quz = null, \NonExistent $nonExistent = null, DecoratorInterface $decorated = null, array $foo = array())
+    public function __construct($quz = null, \NonExistent $nonExistent = null, DecoratorInterface $decorated = null, array $foo = [])
     {
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
index fba001613d2b..15fdb07f68ac 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
@@ -2,7 +2,7 @@ Array
 (
     [Container%s/removed-ids.php] => <?php
 
-return array(
+return [
     'Psr\\Container\\ContainerInterface' => true,
     'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
     'configurator_service' => true,
@@ -14,7 +14,7 @@ return array(
     'inlined' => true,
     'new_factory' => true,
     'tagged_iterator_foo' => true,
-);
+];
 
     [Container%s/getBAR2Service.php] => <?php
 
@@ -179,11 +179,11 @@ use Symfony\Component\DependencyInjection\Exception\RuntimeException;
 
 $a = ($this->services['foo.baz'] ?? $this->load('getFoo_BazService.php'));
 
-$this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array('bar' => 'foo is bar', 'foobar' => 'bar'), true, $this);
+$this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, ['bar' => 'foo is bar', 'foobar' => 'bar'], true, $this);
 
 $instance->foo = 'bar';
 $instance->moo = $a;
-$instance->qux = array('bar' => 'foo is bar', 'foobar' => 'bar');
+$instance->qux = ['bar' => 'foo is bar', 'foobar' => 'bar'];
 $instance->setBar(($this->services['bar'] ?? $this->getBarService()));
 $instance->initialize();
 sc_configure($instance);
@@ -383,14 +383,14 @@ class ProjectServiceContainer extends Container
     private $buildParameters;
     private $containerDir;
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     /**
      * @internal but protected for BC on cache:clear
      */
-    protected $privates = array();
+    protected $privates = [];
 
-    public function __construct(array $buildParameters = array(), $containerDir = __DIR__)
+    public function __construct(array $buildParameters = [], $containerDir = __DIR__)
     {
         $dir = $this->targetDirs[0] = \dirname($containerDir);
         for ($i = 1; $i <= 5; ++$i) {
@@ -400,14 +400,14 @@ class ProjectServiceContainer extends Container
         $this->containerDir = $containerDir;
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->syntheticIds = array(
+        $this->services = $this->privates = [];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
-        $this->fileMap = array(
+        ];
+        $this->fileMap = [
             'BAR' => 'getBAR2Service.php',
             'BAR2' => 'getBAR22Service.php',
             'bar2' => 'getBar23Service.php',
@@ -431,17 +431,17 @@ class ProjectServiceContainer extends Container
             'runtime_error' => 'getRuntimeErrorService.php',
             'service_from_static_method' => 'getServiceFromStaticMethodService.php',
             'tagged_iterator' => 'getTaggedIteratorService.php',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
             'decorated' => 'decorator_service_with_name',
-        );
+        ];
     }
 
     public function reset()
     {
-        $this->privates = array();
+        $this->privates = [];
         parent::reset();
     }
 
@@ -529,8 +529,8 @@ class ProjectServiceContainer extends Container
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -553,11 +553,11 @@ class ProjectServiceContainer extends Container
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
-        );
+        ];
     }
 }
 
@@ -577,10 +577,10 @@ if (!\class_exists(ProjectServiceContainer::class, false)) {
     \class_alias(\Container%s\ProjectServiceContainer::class, ProjectServiceContainer::class, false);
 }
 
-return new \Container%s\ProjectServiceContainer(array(
+return new \Container%s\ProjectServiceContainer([
     'container.build_hash' => '%s',
     'container.build_id' => '%s',
     'container.build_time' => %d,
-), __DIR__.\DIRECTORY_SEPARATOR.'Container%s');
+], __DIR__.\DIRECTORY_SEPARATOR.'Container%s');
 
 )
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index 5b1be1681b66..51bee31461e2 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -626,7 +626,7 @@ public function evaluate($xpath)
      *
      * Example:
      *
-     *     $crawler->filter('h1 a')->extract(array('_text', 'href'));
+     *     $crawler->filter('h1 a')->extract(['_text', 'href']);
      *
      * @param array $attributes An array of attributes
      *
diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index a6c7ff846386..21514e9ac028 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -727,7 +727,7 @@ private function toIterable($files): iterable
     }
 
     /**
-     * Gets a 2-tuple of scheme (may be null) and hierarchical part of a filename (e.g. file:///tmp -> array(file, tmp)).
+     * Gets a 2-tuple of scheme (may be null) and hierarchical part of a filename (e.g. file:///tmp -> [file, tmp]).
      */
     private function getSchemeAndHierarchy(string $filename): array
     {
diff --git a/src/Symfony/Component/HttpFoundation/HeaderUtils.php b/src/Symfony/Component/HttpFoundation/HeaderUtils.php
index 5d23704e192e..966d4ecbcf6f 100644
--- a/src/Symfony/Component/HttpFoundation/HeaderUtils.php
+++ b/src/Symfony/Component/HttpFoundation/HeaderUtils.php
@@ -31,7 +31,7 @@ private function __construct()
      * Example:
      *
      *     HeaderUtils::split("da, en-gb;q=0.8", ",;")
-     *     // => array(array('da'), array('en-gb', 'q=0.8'))
+     *     // => ['da'], ['en-gb', 'q=0.8']]
      *
      * @param string $header     HTTP header value
      * @param string $separators List of characters to split on, ordered by
@@ -75,8 +75,8 @@ public static function split(string $header, string $separators): array
      *
      * Example:
      *
-     *     HeaderUtils::combine(array(array("foo", "abc"), array("bar")))
-     *     // => array("foo" => "abc", "bar" => true)
+     *     HeaderUtils::combine([["foo", "abc"], ["bar"]])
+     *     // => ["foo" => "abc", "bar" => true]
      */
     public static function combine(array $parts): array
     {
@@ -99,7 +99,7 @@ public static function combine(array $parts): array
      *
      * Example:
      *
-     *     HeaderUtils::toString(array("foo" => "abc", "bar" => true, "baz" => "a b c"), ",")
+     *     HeaderUtils::toString(["foo" => "abc", "bar" => true, "baz" => "a b c"], ",")
      *     // => 'foo=abc, bar, baz="a b c"'
      */
     public static function toString(array $assoc, string $separator): string
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
index 38572008dbaa..d3602f73fa7f 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
@@ -328,7 +328,7 @@ public function isStarted()
      * For convenience we omit 'session.' from the beginning of the keys.
      * Explicitly ignores other ini keys.
      *
-     * @param array $options Session ini directives array(key => value)
+     * @param array $options Session ini directives [key => value]
      *
      * @see http://php.net/session.configuration
      */
diff --git a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
index 2d21fdfb0349..3cebfb3e8bea 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
@@ -155,7 +155,7 @@ private function getControllerError($callable)
         }
 
         if (!isset($callable[0]) || !isset($callable[1]) || 2 !== \count($callable)) {
-            return 'Invalid array callable, expected array(controller, method).';
+            return 'Invalid array callable, expected [controller, method].';
         }
 
         list($controller, $method) = $callable;
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
index 5fac0923309e..1ba7e9e20acd 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
@@ -189,7 +189,7 @@ public function getUndefinedControllers()
             [[$controller, 'protectedAction'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Method "protectedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
             [[$controller, 'undefinedAction'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Expected method "undefinedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest". Available methods: "publicAction", "staticAction"'],
             [$controller, \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Controller class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" cannot be called without a method name. You need to implement "__invoke" or use one of the available methods: "publicAction", "staticAction".'],
-            [['a' => 'foo', 'b' => 'bar'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Invalid array callable, expected array(controller, method).'],
+            [['a' => 'foo', 'b' => 'bar'], \InvalidArgumentException::class, 'The controller for URI "/" is not callable. Invalid array callable, expected [controller, method].'],
         ];
     }
 
diff --git a/src/Symfony/Component/Process/CHANGELOG.md b/src/Symfony/Component/Process/CHANGELOG.md
index 354db592a152..6172882e07b6 100644
--- a/src/Symfony/Component/Process/CHANGELOG.md
+++ b/src/Symfony/Component/Process/CHANGELOG.md
@@ -12,9 +12,9 @@ CHANGELOG
 -----
 
  * environment variables will always be inherited
- * added a second `array $env = array()` argument to the `start()`, `run()`,
+ * added a second `array $env = []` argument to the `start()`, `run()`,
    `mustRun()`, and `restart()` methods of the `Process` class
- * added a second `array $env = array()` argument to the `start()` method of the
+ * added a second `array $env = []` argument to the `start()` method of the
    `PhpProcess` class
  * the `ProcessUtils::escapeArgument()` method has been removed
  * the `areEnvironmentVariablesInherited()`, `getOptions()`, and `setOptions()`
diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
index 3db2734c1c5a..16164e4f8094 100644
--- a/src/Symfony/Component/Process/Tests/ProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -1133,8 +1133,8 @@ public function responsesCodeProvider()
     {
         return [
             //expected output / getter / code to execute
-            //array(1,'getExitCode','exit(1);'),
-            //array(true,'isSuccessful','exit();'),
+            // [1,'getExitCode','exit(1);'],
+            // [true,'isSuccessful','exit();'],
             ['output', 'getOutput', 'echo \'output\';'],
         ];
     }
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
index b5be183a7ca5..ce6baef93960 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
@@ -111,7 +111,7 @@ private function generateMatchMethod(): string
 
         $code = <<<EOF
     {
-        \$allow = \$allowSchemes = array();
+        \$allow = \$allowSchemes = [];
         \$pathinfo = rawurldecode(\$pathinfo) ?: '/';
         \$trimmedPathinfo = rtrim(\$pathinfo, '/') ?: '/';
         \$context = \$this->context;
@@ -129,14 +129,14 @@ private function generateMatchMethod(): string
             return <<<'EOF'
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         if ($ret = $this->doMatch($pathinfo, $allow, $allowSchemes)) {
             return $ret;
         }
         if ($allow) {
             throw new MethodNotAllowedException(array_keys($allow));
         }
-        if (!in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+        if (!in_array($this->context->getMethod(), ['HEAD', 'GET'], true)) {
             // no-op
         } elseif ($allowSchemes) {
             redirect_scheme:
@@ -162,10 +162,10 @@ public function match($pathinfo)
         throw new ResourceNotFoundException();
     }
 
-    private function doMatch(string $pathinfo, array &$allow = array(), array &$allowSchemes = array()): array
+    private function doMatch(string $pathinfo, array &$allow = [], array &$allowSchemes = []): array
 
 EOF
-                .$code."\n        return array();\n    }";
+                .$code."\n        return [];\n    }";
         }
 
         return "    public function match(\$pathinfo)\n".$code."\n        throw \$allow ? new MethodNotAllowedException(array_keys(\$allow)) : new ResourceNotFoundException();\n    }";
@@ -272,7 +272,7 @@ private function compileStaticRoutes(array $staticRoutes, bool $matchHost): stri
                         unset($defaults['_canonical_route']);
                     }
                     $default .= sprintf(
-            
97AE
            "%s => array(%s, %s, %s, %s, %s),\n",
+                        "%s => [%s, %s, %s, %s, %s],\n",
                         self::export($url),
                         self::export(['_route' => $name] + $defaults),
                         self::export(!$route->compile()->getHostVariables() ? $route->getHost() : $route->compile()->getHostRegex() ?: null),
@@ -294,8 +294,8 @@ private function compileStaticRoutes(array $staticRoutes, bool $matchHost): stri
         if ($default) {
             $code .= <<<EOF
         default:
-            \$routes = array(
-{$this->indent($default, 4)}            );
+            \$routes = [
+{$this->indent($default, 4)}            ];
 
             if (!isset(\$routes[\$trimmedPathinfo])) {
                 break;
@@ -437,8 +437,8 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
         if ($state->default) {
             $state->switch .= <<<EOF
         default:
-            \$routes = array(
-{$this->indent($state->default, 4)}            );
+            \$routes = [
+{$this->indent($state->default, 4)}            ];
 
             list(\$ret, \$vars, \$requiredMethods, \$requiredSchemes, \$hasTrailingSlash, \$hasTrailingVar) = \$routes[\$m];
 {$this->compileSwitchDefault(true, $matchHost)}
@@ -450,8 +450,8 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
 
         return <<<EOF
         \$matchedPathinfo = {$matchedPathinfo};
-        \$regexList = array({$code}
-        );
+        \$regexList = [{$code}
+        ];
 
         foreach (\$regexList as \$offset => \$regex) {
             while (preg_match(\$regex, \$matchedPathinfo, \$matches)) {
@@ -518,7 +518,7 @@ private function compileStaticPrefixCollection(StaticPrefixCollection $tree, \st
                     unset($defaults['_canonical_route']);
                 }
                 $state->default .= sprintf(
-                    "%s => array(%s, %s, %s, %s, %s, %s),\n",
+                    "%s => [%s, %s, %s, %s, %s, %s],\n",
                     $state->mark,
                     self::export(['_route' => $name] + $defaults),
                     self::export($vars),
@@ -551,7 +551,7 @@ private function compileSwitchDefault(bool $hasVars, bool $matchHost): string
             $code = <<<'EOF'
 
                 if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                    return $allow = $allowSchemes = array();
+                    return $allow = $allowSchemes = [];
                 }
 EOF;
         } else {
@@ -699,7 +699,7 @@ private function compileRoute(Route $route, string $name, bool $checkHost, bool
             $code = sprintf($code, <<<'EOF'
 
             if ('GET' === $canonicalMethod) {
-                return $allow = $allowSchemes = array();
+                return $allow = $allowSchemes = [];
             }
 EOF
                 ,
@@ -710,11 +710,11 @@ private function compileRoute(Route $route, string $name, bool $checkHost, bool
         }
 
         if ($vars) {
-            $code .= '        $matches = array(';
+            $code .= '        $matches = [';
             foreach ($vars as $j => $m) {
                 $code .= sprintf('%s => $matches[%d] ?? null, ', self::export($m), 1 + $j);
             }
-            $code = substr_replace($code, ");\n\n", -2);
+            $code = substr_replace($code, "];\n\n", -2);
         }
 
         if ($route->getCondition()) {
@@ -755,7 +755,7 @@ private function compileRoute(Route $route, string $name, bool $checkHost, bool
 
         // optimize parameters array
         if ($matches || $hostMatches) {
-            $vars = ["array('_route' => '$name')"];
+            $vars = ["['_route' => '$name']"];
             if ($matches || ($hostMatches && !$checkHost)) {
                 $vars[] = '$matches';
             }
@@ -771,7 +771,7 @@ private function compileRoute(Route $route, string $name, bool $checkHost, bool
         } elseif ($defaults) {
             $code .= sprintf("            \$ret = %s;\n", self::export(['_route' => $name] + $defaults));
         } else {
-            $code .= sprintf("            \$ret = array('_route' => '%s');\n", $name);
+            $code .= sprintf("            \$ret = ['_route' => '%s'];\n", $name);
         }
 
         if ($methods) {
@@ -865,11 +865,11 @@ public static function export($value): string
             return str_replace("\n", '\'."\n".\'', var_export($value, true));
         }
         if (!$value) {
-            return 'array()';
+            return '[]';
         }
 
         $i = 0;
-        $export = 'array(';
+        $export = '[';
 
         foreach ($value as $k => $v) {
             if ($i === $k) {
@@ -885,6 +885,6 @@ public static function export($value): string
             $export .= self::export($v).', ';
         }
 
-        return substr_replace($export, ')', -2);
+        return substr_replace($export, ']', -2);
     }
 }
diff --git a/src/Symfony/Component/Serializer/CHANGELOG.md b/src/Symfony/Component/Serializer/CHANGELOG.md
index 983bb9f5a065..5338b95ac33e 100644
--- a/src/Symfony/Component/Serializer/CHANGELOG.md
+++ b/src/Symfony/Component/Serializer/CHANGELOG.md
@@ -25,7 +25,7 @@ CHANGELOG
  * removed the `Serializer::$normalizerCache` and `Serializer::$denormalizerCache`
    properties
  * added an optional `string $format = null` argument to `AbstractNormalizer::instantiateObject`
- * added an optional `array $context = array()` to `Serializer::supportsNormalization`, `Serializer::supportsDenormalization`,
+ * added an optional `array $context = []` to `Serializer::supportsNormalization`, `Serializer::supportsDenormalization`,
    `Serializer::supportsEncoding` and `Serializer::supportsDecoding`
 
 3.4.0
diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index dee18f8e5814..dbeb92650a4a 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -368,7 +368,7 @@ private function buildXml(\DOMNode $parentNode, $data, string $xmlRootNodeName =
                         /*
                          * Create nodes to append to $parentNode based on the $key of this array
                          * Produces <xml><item>0</item><item>1</item></xml>
-                         * From array("item" => array(0,1));.
+                         * From ["item" => [0,1]];.
                          */
                         foreach ($data as $subData) {
                             $append = $this->appendNode($parentNode, $subData, $key);
diff --git a/src/Symfony/Component/Translation/Tests/fixtures/resources.php b/src/Symfony/Component/Translation/Tests/fixtures/resources.php
index c2913985391c..e510c6b22331 100644
--- a/src/Symfony/Component/Translation/Tests/fixtures/resources.php
+++ b/src/Symfony/Component/Translation/Tests/fixtures/resources.php
@@ -1,5 +1,5 @@
 <?php
 
-return array (
+return [
   'foo' => 'bar',
-);
+];
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
index 3ee795adf523..87c3e2e3003c 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
@@ -6,7 +6,7 @@ yaml: |
   - Sammy Sosa
   - Ken Griffey
 php: |
-  array('Mark McGwire', 'Sammy Sosa', 'Ken Griffey')
+  ['Mark McGwire', 'Sammy Sosa', 'Ken Griffey']
 ---
 test: Mapping of scalars to scalars
 spec: 2.2
@@ -15,7 +15,7 @@ yaml: |
   avg: 0.278
   rbi: 147
 php: |
-  array('hr' => 65, 'avg' => 0.278, 'rbi' => 147)
+  ['hr' => 65, 'avg' => 0.278, 'rbi' => 147]
 ---
 test: Mapping of scalars to sequences
 spec: 2.3
@@ -29,13 +29,13 @@ yaml: |
        - Chicago Cubs
        - Atlanta Braves
 php: |
-    array('american' =>
-        array( 'Boston Red Sox', 'Detroit Tigers',
-          'New York Yankees' ),
+    ['american' =>
+        [ 'Boston Red Sox', 'Detroit Tigers',
+          'New York Yankees' ],
       'national' =>
-        array( 'New York Mets', 'Chicago Cubs',
-          'Atlanta Braves' )
-    )
+        [ 'New York Mets', 'Chicago Cubs',
+          'Atlanta Braves' ]
+    ]
 ---
 test: Sequence of mappings
 spec: 2.4
@@ -49,10 +49,10 @@ yaml: |
       hr:   63
       avg:  0.288
 php: |
-    array(
-      array('name' => 'Mark McGwire', 'hr' => 65, 'avg' => 0.278),
-      array('name' => 'Sammy Sosa', 'hr' => 63, 'avg' => 0.288)
-    )
+    [
+      ['name' => 'Mark McGwire', 'hr' => 65, 'avg' => 0.278],
+      ['name' => 'Sammy Sosa', 'hr' => 63, 'avg' => 0.288]
+    ]
 ---
 test: Legacy A5
 todo: true
@@ -134,11 +134,11 @@ yaml: |
   - [ Mark McGwire , 65 , 0.278 ]
   - [ Sammy Sosa   , 63 , 0.288 ]
 php: |
-  array(
-    array( 'name', 'hr', 'avg' ),
-    array( 'Mark McGwire', 65, 0.278 ),
-    array( 'Sammy Sosa', 63, 0.288 )
-  )
+  [
+    [ 'name', 'hr', 'avg' ],
+    [ 'Mark McGwire', 65, 0.278 ],
+    [ 'Sammy Sosa', 63, 0.288 ]
+  ]
 ---
 test: Mapping of mappings
 todo: true
@@ -150,12 +150,12 @@ yaml: |
       avg: 0.288
     }
 php: |
-  array(
+  [
     'Mark McGwire' =>
-      array( 'hr' => 65, 'avg' => 0.278 ),
+      [ 'hr' => 65, 'avg' => 0.278 ],
     'Sammy Sosa' =>
-      array( 'hr' => 63, 'avg' => 0.288 )
-  )
+      [ 'hr' => 63, 'avg' => 0.288 ]
+  ]
 ---
 test: Two documents in a stream each with a leading comment
 todo: true
@@ -208,10 +208,10 @@ yaml: |
     - Sammy Sosa
     - Ken Griffey
 php: |
-  array(
-    'hr' => array( 'Mark McGwire', 'Sammy Sosa' ),
-    'rbi' => array( 'Sammy Sosa', 'Ken Griffey' )
-  )
+  [
+    'hr' => [ 'Mark McGwire', 'Sammy Sosa' ],
+    'rbi' => [ 'Sammy Sosa', 'Ken Griffey' ]
+  ]
 ---
 test: Node for Sammy Sosa appears twice in this document
 spec: 2.10
@@ -225,12 +225,12 @@ yaml: |
       - *SS # Subsequent occurrence
       - Ken Griffey
 php: |
-   array(
+   [
       'hr' =>
-         array('Mark McGwire', 'Sammy Sosa'),
+         ['Mark McGwire', 'Sammy Sosa'],
       'rbi' =>
-         array('Sammy Sosa', 'Ken Griffey')
-   )
+         ['Sammy Sosa', 'Ken Griffey']
+    ]
 ---
 test: Mapping between sequences
 todo: true
@@ -297,20 +297,20 @@ yaml: |
   - item    : Big Shoes
     quantity: 1
 php: |
-  array (
-    array (
+  [
+    [
       'item' => 'Super Hoop',
       'quantity' => 1,
-    ),
-    array (
+    ],
+    [
       'item' => 'Basketball',
       'quantity' => 4,
-    ),
-    array (
+    ],
+    [
       'item' => 'Big Shoes',
       'quantity' => 1,
-    )
-  )
+    ]
+  ]
 perl: |
   [
      { item => 'Super Hoop', quantity => 1 },
@@ -462,11 +462,11 @@ yaml: |
      65 Home Runs
      0.278 Batting Average
 php: |
-  array(
+  [
     'name' => 'Mark McGwire',
     'accomplishment' => "Mark set a major league home run record in 1998.\n",
     'stats' => "65 Home Runs\n0.278 Batting Average\n"
-  )
+  ]
 ---
 test: Quoted scalars
 todo: true
@@ -512,11 +512,11 @@ yaml: |
   octal: 014
   hexadecimal: 0xC
 php: |
-  array(
+  [
     'canonical' => 12345,
     'octal' => 014,
     'hexadecimal' => 0xC
-  )
+  ]
 ---
 # FIX: spec shows parens around -inf and NaN
 test: Floating point
@@ -528,13 +528,13 @@ yaml: |
   not a number: .NaN
   float as whole number: !!float 1
 php: |
-  array(
+  [
     'canonical' => 1230.15,
     'exponential' => 1230.15,
     'negative infinity' => log(0),
     'not a number' => -log(0),
     'float as whole number' => (float) 1
-  )
+  ]
 ---
 test: Timestamps
 todo: true
@@ -545,12 +545,12 @@ yaml: |
   spaced:  2001-12-14 21:59:43.10 -05:00
   date:   2002-12-14 # Time is noon UTC
 php: |
-  array(
+  [
     'canonical' => YAML::mktime( 2001, 12, 15, 2, 59, 43, 0.10 ),
     'iso8601' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
     'spaced' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
     'date' => Date.new( 2002, 12, 14 )
-  )
+  ]
 ---
 test: legacy Timestamps test
 todo: true
@@ -561,12 +561,12 @@ yaml: |
     spaced:  2001-12-14 21:59:43.00 -05:00
     date:   2002-12-14
 php: |
-   array(
+   [
      'canonical' => Time::utc( 2001, 12, 15, 2, 59, 43, 0 ),
      'iso8601' => YAML::mktime( 2001, 2, 28, 21, 59, 43, 0, "-05:00" ),
      'spaced' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0, "-05:00" ),
      'date' => Date.new( 2002, 12, 14 )
-   )
+   ]
 ---
 test: Various explicit families
 todo: true
@@ -734,20 +734,20 @@ yaml: |
     Backup contact is Nancy
     Billsmer @ 338-4338.
 php: |
-  array(
+  [
      'invoice' => 34843, 'date' => gmmktime(0, 0, 0, 1, 23, 2001),
      'bill-to' =>
-      array( 'given' => 'Chris', 'family' => 'Dumars', 'address' => array( 'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak', 'state' => 'MI', 'postal' => 48046 ) )
+      [ 'given' => 'Chris', 'family' => 'Dumars', 'address' => [ 'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak', 'state' => 'MI', 'postal' => 48046 ]]
      , 'ship-to' =>
-      array( 'given' => 'Chris', 'family' => 'Dumars', 'address' => array( 'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak', 'state' => 'MI', 'postal' => 48046 ) )
+      [ 'given' => 'Chris', 'family' => 'Dumars', 'address' => [ 'lines' => "458 Walkman Dr.\nSuite #292\n", 'city' => 'Royal Oak', 'state' => 'MI', 'postal' => 48046 ]]
      , 'product' =>
-       array(
-        array( 'sku' => 'BL394D', 'quantity' => 4, 'description' => 'Basketball', 'price' => 450.00 ),
-        array( 'sku' => 'BL4438H', 'quantity' => 1, 'description' => 'Super Hoop', 'price' => 2392.00 )
-      ),
+       [
+        [ 'sku' => 'BL394D', 'quantity' => 4, 'description' => 'Basketball', 'price' => 450.00 ],
+        [ 'sku' => 'BL4438H', 'quantity' => 1, 'description' => 'Super Hoop', 'price' => 2392.00 ]
+      ],
      'tax' => 251.42, 'total' => 4443.52,
      'comments' => "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.\n"
-  )
+  ]
 ---
 test: Log file
 todo: true
@@ -806,9 +806,9 @@ yaml: |
    # These are three throwaway comment
    # lines (the first line is empty).
 php: |
-   array(
+   [
      'this' => "contains three lines of text.\nThe third one starts with a\n# character. This isn't a comment.\n"
-   )
+   ]
 ---
 test: Document with a single value
 todo: true
@@ -858,11 +858,11 @@ yaml: |
    date    : 2001-01-23
    total   : 4443.52
 php: |
-   array(
+   [
       'invoice' => 34843,
       'date' => gmmktime(0, 0, 0, 1, 23, 2001),
       'total' => 4443.52
-   )
+   ]
 ---
 test: Single-line documents
 todo: true
@@ -913,7 +913,7 @@ yaml: |
    no int: ! 12
    string: !!str 12
 php: |
-   array( 'integer' => 12, 'no int' => '12', 'string' => '12' )
+   [ 'integer' => 12, 'no int' => '12', 'string' => '12' ]
 ---
 test: Private types
 todo: true
@@ -945,7 +945,7 @@ yaml: |
   # The URI is 'tag:yaml.org,2002:str'
   - !!str a Unicode string
 php: |
-  array( 'a Unicode string' )
+  [ 'a Unicode string' ]
 ---
 test: Type family under perl.yaml.org
 todo: true
@@ -1018,9 +1018,9 @@ yaml: |
    repeated use of this value.
   alias : *A001
 php: |
-  array( 'anchor' => 'This scalar has an anchor.',
+  [ 'anchor' => 'This scalar has an anchor.',
     'override' => "The alias node below is a repeated use of this value.\n",
-    'alias' => "The alias node below is a repeated use of this value.\n" )
+    'alias' => "The alias node below is a repeated use of this value.\n" ]
 ---
 test: Flow and block formatting
 todo: true
@@ -1131,12 +1131,12 @@ yaml: |
    redundant: |2
      This value is indented 2 spaces.
 php: |
-   array(
+   [
       'leading spaces' => "    This value starts with four spaces.\n",
       'leading line break' => "\nThis value starts with a line break.\n",
       'leading comment indicator' => "# first line starts with a\n# character.\n",
       'redundant' => "This value is indented 2 spaces.\n"
-   )
+   ]
 ---
 test: Chomping and keep modifiers
 yaml: |
@@ -1155,14 +1155,14 @@ yaml: |
 
     same as "kept" above: "This has two newlines.\n\n"
 php: |
-    array(
+    [
       'clipped' => "This has one newline.\n",
       'same as "clipped" above' => "This has one newline.\n",
       'stripped' => 'This has no newline.',
       'same as "stripped" above' => 'This has no newline.',
       'kept' => "This has two newlines.\n\n",
       'same as "kept" above' => "This has two newlines.\n\n"
-    )
+    ]
 ---
 test: Literal combinations
 todo: true
@@ -1200,7 +1200,7 @@ yaml: |
 
    both are equal to: "  This has no newline."
 php: |
-   array(
+   [
      'empty' => '',
      'literal' => "The \\ ' \" characters may be\nfreely used. Leading white\n   space " +
        "is significant.\n\nLine breaks are significant.\nThus this value contains one\n" +
@@ -1211,7 +1211,7 @@ php: |
      'indented and chomped' => '  This has no newline.',
      'also written as' => '  This has no newline.',
      'both are equal to' => '  This has no newline.'
-   )
+   ]
 ---
 test: Folded combinations
 todo: true
@@ -1267,7 +1267,7 @@ yaml: |
    # Explicit comments may follow
    # but must be less indented.
 php: |
-   array(
+   [
      'empty' => '',
      'one paragraph' => 'Line feeds are converted to spaces, so this value'.
        " contains no line breaks except for the final one.\n",
@@ -1279,7 +1279,7 @@ php: |
      'above is equal to' => "This is a folded paragraph followed by a list:\n".
        " * first entry\n * second entry\nFollowed by another folded paragraph, ".
        "another list:\n\n * first entry\n\n * second entry\n\nAnd a final folded paragraph.\n"
-   )
+   ]
 ---
 test: Single quotes
 todo: true
@@ -1294,13 +1294,13 @@ yaml: |
          line break'
    is same as: "this contains six spaces\nand one line break"
 php: |
-   array(
+   [
      'empty' => '',
      'second' => '! : \\ etc. can be used freely.',
      'third' => "a single quote ' must be escaped.",
      'span' => "this contains six spaces\nand one line break",
      'is same as' => "this contains six spaces\nand one line break"
-   )
+   ]
 ---
 test: Double quotes
 todo: true
@@ -1314,14 +1314,14 @@ yaml: |
          spaces"
    is equal to: "this contains four  spaces"
 php: |
-   array(
+   [
      'empty' => '',
      'second' => '! : etc. can be used freely.',
      'third' => 'a " or a \\ must be escaped.',
      'fourth' => "this value ends with an LF.\n",
      'span' => "this contains four  spaces",
      'is equal to' => "this contains four  spaces"
-   )
+   ]
 ---
 test: Unquoted strings
 todo: true
@@ -1350,7 +1350,7 @@ yaml: |
    note: { one-line keys: but multi-line values }
 
 php: |
-   array(
+   [
      'first' => 'There is no unquoted empty string.',
      'second' => 12,
      'third' => '12',
@@ -1358,7 +1358,7 @@ php: |
      'indicators' => "this has no comments. #:foo and bar# are both text.",
      'flow' => [ 'can span lines', 'like this' ],
      'note' => { 'one-line keys' => 'but multi-line values' }
-   )
+   ]
 ---
 test: Spanning sequences
 todo: true
@@ -1372,11 +1372,11 @@ yaml: |
      - one
      - two
 php: |
-   array(
+   [
      'flow' => [ 'one', 'two' ],
      'spanning' => [ 'one', 'two' ],
      'block' => [ 'one', 'two' ]
-   )
+   ]
 ---
 test: Flow mappings
 yaml: |
@@ -1387,10 +1387,10 @@ yaml: |
        one: 1
        two: 2
 php: |
-   array(
-     'flow' => array( 'one' => 1, 'two' => 2 ),
-     'block' => array( 'one' => 1, 'two' => 2 )
-   )
+   [
+     'flow' => [ 'one' => 1, 'two' => 2 ],
+     'block' => [ 'one' => 1, 'two' => 2 ]
+    ]
 ---
 test: Representations of 12
 todo: true
@@ -1412,7 +1412,7 @@ yaml: |
    - foo/bar
    - /a.*b/
 php: |
-   array( 12, '12', '12', '12', '12', '/foo/bar', 'd:/foo/bar', 'foo/bar', '/a.*b/' )
+   [ 12, '12', '12', '12', '12', '/foo/bar', 'd:/foo/bar', 'foo/bar', '/a.*b/' ]
 ---
 test: "Null"
 todo: true
@@ -1434,12 +1434,12 @@ yaml: |
          only two with values.
 
 php: |
-   array (
+   [
      'canonical' => null,
      'english' => null,
-     'sparse' => array( null, '2nd entry', null, '4th entry', null ]),
+     'sparse' => [ null, '2nd entry', null, '4th entry', null ]],
      'four' => 'This mapping has five keys, only two with values.'
-   )
+      ]
 ---
 test: Omap
 todo: true
@@ -1504,11 +1504,11 @@ yaml: |
    octal: 014
    hexadecimal: 0xC
 php: |
-   array(
+   [
      'canonical' => 12345,
      'octal' => 12,
      'hexadecimal' => 12
-   )
+   ]
 ---
 test: Float
 yaml: |
@@ -1517,12 +1517,12 @@ yaml: |
    negative infinity: -.inf
    not a number: .NaN
 php: |
-  array(
+  [
     'canonical' => 1230.15,
     'exponential' => 1230.15,
     'negative infinity' => log(0),
     'not a number' => -log(0)
-  )
+  ]
 ---
 test: Timestamp
 todo: true
@@ -1532,12 +1532,12 @@ yaml: |
    space separated: 2001-12-14 21:59:43.10 -05:00
    date (noon UTC): 2002-12-14
 ruby: |
-   array(
+   [
      'canonical' => YAML::mktime( 2001, 12, 15, 2, 59, 43, 0.10 ),
      'valid iso8601' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
      'space separated' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
      'date (noon UTC)' => Date.new( 2002, 12, 14 )
-   )
+   ]
 ---
 test: Binary
 todo: true
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsTypeTransfers.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsTypeTransfers.yml
index f1a7832956b3..9a03b7dae17e 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsTypeTransfers.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsTypeTransfers.yml
@@ -25,14 +25,14 @@ yaml: |
     - No, I mean, "And what about Yaml?"
     - Oh, oh yeah. Uh.. Yaml for Ruby.
 php: |
-    array(
+    [
       "What's Yaml?",
       "It's for writing data structures in plain text.",
       "And?",
       "And what? That's not good enough for you?",
       "No, I mean, \"And what about Yaml?\"",
       "Oh, oh yeah. Uh.. Yaml for Ruby."
-    )
+    ]
 ---
 test: Indicators in Strings
 brief: >
@@ -43,11 +43,11 @@ yaml: |
     same for the pound sign: here we have it#in a string
     the comma can, honestly, be used in most cases: [ but not in, inline collections ]
 php: |
-    array(
+    [
       'the colon followed by space is an indicator' => 'but is a string:right here',
       'same for the pound sign' => 'here we have it#in a string',
-      'the comma can, honestly, be used in most cases' => array('but not in', 'inline collections')
-    )
+      'the comma can, honestly, be used in most cases' => ['but not in', 'inline collections']
+    ]
 ---
 test: Forcing Strings
 brief: >
@@ -57,10 +57,10 @@ yaml: |
     date string: !!str 2001-08-01
     number string: !!str 192
 php: |
-    array(
+    [
       'date string' => '2001-08-01',
       'number string' => '192'
-    )
+    ]
 ---
 test: Single-quoted Strings
 brief: >
@@ -75,12 +75,12 @@ yaml: |
     why do i hate them?: 'it''s very hard to explain'
     entities: '&pound; me'
 php: |
-    array(
+    [
       'all my favorite symbols' => '#:!/%.)',
       'a few i hate' => '&(*',
       'why do i hate them?' => 'it\'s very hard to explain',
       'entities' => '&pound; me'
-    )
+    ]
 ---
 test: Double-quoted Strings
 brief: >
@@ -90,9 +90,9 @@ brief: >
 yaml: |
     i know where i want my line breaks: "one here\nand another here\n"
 php: |
-    array(
+    [
       'i know where i want my line breaks' => "one here\nand another here\n"
-    )
+    ]
 ---
 test: Multi-line Quoted Strings
 todo: true
@@ -106,10 +106,10 @@ yaml: |
       let it go on and on to other lines
       until i end it with a quote."
 php: |
-    array('i want a long string' => "so i'm going to ".
+    ['i want a long string' => "so i'm going to ".
          "let it go on and on to other lines ".
          "until i end it with a quote."
-    )
+    ]
 
 ---
 test: Plain scalars
@@ -128,7 +128,7 @@ yaml: |
     - This would impair my skiing ability somewhat for the
       duration, as can be imagined.
 php: |
-    array(
+    [
       "My little toe is broken in two places;",
       "I'm crazy to have skied this way;",
       "I'm not the craziest he's seen, since there was always ".
@@ -139,7 +139,7 @@ php: |
       "He's going to put my foot in plaster for a month;",
       "This would impair my skiing ability somewhat for the duration, ".
          "as can be imagined."
-    )
+    ]
 ---
 test: 'Null'
 brief: >
@@ -149,11 +149,11 @@ yaml: |
     hosted by: Bob and David
     date of next season: ~
 php: |
-    array(
+    [
       'name' => 'Mr. Show',
       'hosted by' => 'Bob and David',
       'date of next season' => null
-    )
+    ]
 ---
 test: Boolean
 brief: >
@@ -162,10 +162,10 @@ yaml: |
     Is Gus a Liar?: true
     Do I rely on Gus for Sustenance?: false
 php: |
-    array(
+    [
       'Is Gus a Liar?' => true,
       'Do I rely on Gus for Sustenance?' => false
-    )
+    ]
 ---
 test: Integers
 dump_skip: true
@@ -177,10 +177,10 @@ yaml: |
     zero: 0
     simple: 12
 php: |
-    array(
+    [
       'zero' => 0,
       'simple' => 12,
-    )
+    ]
 ---
 test: Floats
 dump_skip: true
@@ -192,10 +192,10 @@ yaml: |
      a simple float: 2.00
      scientific notation: 1.00009e+3
 php: |
-     array(
+     [
        'a simple float' => 2.0,
        'scientific notation' => 1000.09
-     )
+     ]
 ---
 test: Time
 todo: true
@@ -208,10 +208,10 @@ yaml: |
     iso8601: 2001-12-14t21:59:43.10-05:00
     space separated: 2001-12-14 21:59:43.10 -05:00
 php: |
-    array(
+    [
       'iso8601' => mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ),
       'space separated' => mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" )
-    )
+    ]
 ---
 test: Date
 todo: true

From de3fb2ca84d07b60cc95e97f3bd591a2aa5a29b5 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 20:56:24 +0100
Subject: [PATCH 044/103] fixed tests

---
 .../Tests/Fixtures/TemplatePathsCache/templates-empty.php     | 4 ++--
 .../Tests/Fixtures/TemplatePathsCache/templates.php           | 4 ++--
 .../Component/Translation/Tests/fixtures/resources.php        | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates-empty.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates-empty.php
index 2f147d07214e..9ba223074c68 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates-empty.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates-empty.php
@@ -1,2 +1,2 @@
-<?php return  [
-];
+<?php return array (
+);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates.php
index 025b0e558a10..0263003e051c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/TemplatePathsCache/templates.php
@@ -1,3 +1,3 @@
-<?php return  [
+<?php return array (
   'bundle:controller:name.format.engine' => __DIR__.'/../path/to/template.html.twig',
-];
+);
diff --git a/src/Symfony/Component/Translation/Tests/fixtures/resources.php b/src/Symfony/Component/Translation/Tests/fixtures/resources.php
index e510c6b22331..c2913985391c 100644
--- a/src/Symfony/Component/Translation/Tests/fixtures/resources.php
+++ b/src/Symfony/Component/Translation/Tests/fixtures/resources.php
@@ -1,5 +1,5 @@
 <?php
 
-return [
+return array (
   'foo' => 'bar',
-];
+);

From d2098d7e5dbcc151dcfcc99ac363a8ac84bc48e9 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 21:35:37 +0100
Subject: [PATCH 045/103] fixed CS

---
 .php_cs.dist                                  |  16 +-
 ...gisterEventListenersAndSubscribersPass.php |  14 +-
 .../Doctrine/Form/DoctrineOrmTypeGuesser.php  |  40 +-
 ...erEventListenersAndSubscribersPassTest.php | 140 +++----
 .../DoctrineExtensionTest.php                 | 182 ++++-----
 .../PropertyInfo/DoctrineExtractorTest.php    |  66 ++--
 src/Symfony/Bridge/Monolog/Logger.php         |   2 +-
 .../Bridge/Monolog/Tests/LoggerTest.php       |  16 +-
 .../LazyProxy/PhpDumper/ProxyDumperTest.php   |  28 +-
 .../Bridge/Twig/Command/DebugCommand.php      |  60 +--
 .../Bridge/Twig/Extension/CodeExtension.php   |  32 +-
 .../Twig/Extension/TranslationExtension.php   |  24 +-
 .../Twig/Tests/Command/DebugCommandTest.php   |  84 ++--
 .../AbstractBootstrap3LayoutTest.php          |   8 +-
 .../AbstractBootstrap4LayoutTest.php          |   8 +-
 .../Tests/Extension/DumpExtensionTest.php     |  48 +--
 .../Extension/Fixtures/StubTranslator.php     |   2 +-
 .../Extension/FormExtensionDivLayoutTest.php  | 100 ++---
 .../FormExtensionTableLayoutTest.php          |  42 +-
 .../Tests/Translation/TwigExtractorTest.php   |  74 ++--
 .../TokenParser/TransChoiceTokenParser.php    |   6 +-
 .../Twig/TokenParser/TransTokenParser.php     |   6 +-
 .../FrameworkBundle/Command/AboutCommand.php  |  54 +--
 .../Command/ContainerDebugCommand.php         |  30 +-
 .../Command/DebugAutowiringCommand.php        |  10 +-
 .../Command/TranslationDebugCommand.php       |  30 +-
 .../Command/TranslationUpdateCommand.php      |  20 +-
 .../Console/Descriptor/TextDescriptor.php     | 152 +++----
 .../Controller/ControllerTrait.php            |   2 +-
 .../DependencyInjection/Configuration.php     | 128 +++---
 .../FrameworkExtension.php                    | 210 +++++-----
 .../Routing/DelegatingLoader.php              |   2 +-
 .../Templating/Helper/StopwatchHelper.php     |   2 +-
 .../Templating/Helper/TranslatorHelper.php    |   4 +-
 .../CacheWarmer/SerializerCacheWarmerTest.php |   6 +-
 .../Command/TranslationDebugCommandTest.php   |  56 +--
 .../Command/TranslationUpdateCommandTest.php  |   4 +-
 .../Descriptor/AbstractDescriptorTest.php     |  12 +-
 .../Console/Descriptor/ObjectsProvider.php    |   4 +-
 .../Compiler/CachePoolClearerPassTest.php     |  14 +-
 .../Compiler/CachePoolPassTest.php            |   4 +-
 .../DataCollectorTranslatorPassTest.php       |  22 +-
 .../DependencyInjection/ConfigurationTest.php | 246 ++++++------
 ...messenger_amqp_transport_no_serializer.php |  12 +-
 .../Fixtures/php/messenger_multiple_buses.php |  30 +-
 .../Fixtures/php/messenger_routing.php        |  24 +-
 .../Fixtures/php/messenger_transport.php      |  18 +-
 .../php/messenger_transport_no_serializer.php |  16 +-
 .../Fixtures/php/messenger_transports.php     |  18 +-
 .../Fixtures/php/serializer_disabled.php      |   8 +-
 .../php/session_cookie_secure_auto.php        |   8 +-
 .../FrameworkExtensionTest.php                | 296 +++++++-------
 .../Functional/ContainerDebugCommandTest.php  |  12 +-
 .../Functional/DebugAutowiringCommandTest.php |   4 +-
 .../Tests/Routing/DelegatingLoaderTest.php    |  14 +-
 .../Helper/Fixtures/StubTranslator.php        |   2 +-
 .../Helper/FormHelperDivLayoutTest.php        |  56 +--
 .../Helper/FormHelperTableLayoutTest.php      |   8 +-
 .../Tests/Translation/TranslatorTest.php      |  18 +-
 .../DataCollector/SecurityDataCollector.php   |   6 +-
 .../SecurityBundle/Debug/WrappedListener.php  |   4 +-
 .../AddExpressionLanguageProvidersPass.php    |   2 +-
 .../Compiler/AddSecurityVotersPass.php        |   2 +-
 .../Security/Factory/JsonLoginLdapFactory.php |   2 +-
 .../Security/Factory/RememberMeFactory.php    |   4 +-
 .../DependencyInjection/SecurityExtension.php |  92 ++---
 .../EventListener/VoteListener.php            |   2 +-
 .../SecurityDataCollectorTest.php             | 194 ++++-----
 .../Debug/TraceableFirewallListenerTest.php   |   2 +-
 .../Compiler/AddSecurityVotersPassTest.php    |   4 +-
 .../AddSessionDomainConstraintPassTest.php    |  26 +-
 .../CompleteConfigurationTest.php             | 204 +++++-----
 .../Fixtures/php/container1.php               | 128 +++---
 .../Fixtures/php/simple_auth.php              |  32 +-
 .../SecurityExtensionTest.php                 |  36 +-
 .../Tests/EventListener/VoteListenerTest.php  |   6 +-
 .../Tests/Functional/JsonLoginLdapTest.php    |   2 +-
 .../Functional/app/JsonLoginLdap/bundles.php  |   4 +-
 .../Tests/Security/FirewallContextTest.php    |   2 +-
 .../DependencyInjection/Configuration.php     |  16 +-
 .../DependencyInjection/TwigExtension.php     |  24 +-
 .../DependencyInjection/TwigExtensionTest.php | 124 +++---
 .../Functional/NoTemplatingEntryTest.php      |  12 +-
 .../Bundle/WebServerBundle/WebServer.php      |   6 +-
 .../Component/Asset/Tests/UrlPackageTest.php  |  88 ++---
 src/Symfony/Component/BrowserKit/Client.php   |   6 +-
 src/Symfony/Component/BrowserKit/Cookie.php   |   8 +-
 .../Component/BrowserKit/Tests/ClientTest.php |  40 +-
 .../Cache/Adapter/AbstractAdapter.php         |  36 +-
 .../Component/Cache/Adapter/ArrayAdapter.php  |   2 +-
 .../Component/Cache/Adapter/ChainAdapter.php  |  10 +-
 .../Component/Cache/Adapter/PdoAdapter.php    |   2 +-
 .../Component/Cache/Adapter/ProxyAdapter.php  |   2 +-
 .../Cache/Adapter/TagAwareAdapter.php         |   2 +-
 src/Symfony/Component/Cache/CacheItem.php     |  12 +-
 .../CacheCollectorPass.php                    |   6 +-
 .../CachePoolClearerPass.php                  |   2 +-
 .../DependencyInjection/CachePoolPass.php     |  14 +-
 .../CachePoolPrunerPass.php                   |   2 +-
 src/Symfony/Component/Cache/LockRegistry.php  |  10 +-
 .../Cache/Marshaller/DefaultMarshaller.php    |   2 +-
 .../Component/Cache/Simple/ArrayCache.php     |   4 +-
 .../Component/Cache/Simple/PdoCache.php       |   2 +-
 .../Component/Cache/Simple/Psr6Cache.php      |   2 +-
 .../Cache/Tests/Adapter/AdapterTestCase.php   |   4 +-
 .../Cache/Tests/Adapter/ArrayAdapterTest.php  |   4 +-
 .../Cache/Tests/Adapter/ChainAdapterTest.php  |  16 +-
 .../Tests/Adapter/MaxIdLengthAdapterTest.php  |  28 +-
 .../Tests/Adapter/MemcachedAdapterTest.php    |  28 +-
 .../Tests/Adapter/PdoDbalAdapterTest.php      |   4 +-
 .../Tests/Adapter/PhpArrayAdapterTest.php     |  42 +-
 .../Cache/Tests/Adapter/PredisAdapterTest.php |   8 +-
 .../Adapter/PredisRedisClusterAdapterTest.php |   2 +-
 .../Cache/Tests/Adapter/RedisAdapterTest.php  |   2 +-
 .../Tests/Adapter/RedisClusterAdapterTest.php |  12 +-
 .../Tests/Adapter/TagAwareAdapterTest.php     |   2 +-
 .../Component/Cache/Tests/CacheItemTest.php   |  40 +-
 .../CacheCollectorPassTest.php                |   8 +-
 .../CachePoolClearerPassTest.php              |  14 +-
 .../DependencyInjection/CachePoolPassTest.php |  10 +-
 .../CachePoolPrunerPassTest.php               |   8 +-
 .../Cache/Tests/Fixtures/ArrayCache.php       |   6 +-
 .../Cache/Tests/LockRegistryTest.php          |   2 +-
 .../Marshaller/DefaultMarshallerTest.php      |   8 +-
 .../Cache/Tests/Simple/PhpArrayCacheTest.php  |  42 +-
 .../Component/Cache/Traits/AbstractTrait.php  |  34 +-
 .../Component/Cache/Traits/ApcuTrait.php      |   4 +-
 .../Component/Cache/Traits/ArrayTrait.php     |  10 +-
 .../Component/Cache/Traits/ContractsTrait.php |   2 +-
 .../Component/Cache/Traits/MemcachedTrait.php |  32 +-
 .../Component/Cache/Traits/PdoTrait.php       |  20 +-
 .../Component/Cache/Traits/PhpArrayTrait.php  |  10 +-
 .../Component/Cache/Traits/PhpFilesTrait.php  |  14 +-
 .../Component/Cache/Traits/RedisTrait.php     |  62 +--
 .../Component/Config/Definition/ArrayNode.php |   2 +-
 .../Component/Config/Loader/FileLoader.php    |   2 +-
 .../Config/Resource/GlobResource.php          |   6 +-
 .../Resource/ReflectionClassResource.php      |   2 +-
 .../Config/Tests/Definition/ArrayNodeTest.php |   4 +-
 .../Builder/ArrayNodeDefinitionTest.php       |  66 ++--
 .../Definition/Builder/TreeBuilderTest.php    |   2 +-
 .../Tests/Resource/GlobResourceTest.php       |   6 +-
 .../Console/Helper/ProcessHelper.php          |   6 +-
 .../Component/Console/Helper/Table.php        |  62 +--
 .../Component/Console/Tester/TesterTrait.php  |   2 +-
 .../Console/Tests/ApplicationTest.php         | 268 ++++++-------
 .../Tests/Helper/ProcessHelperTest.php        |  44 +--
 .../Console/Tests/Helper/TableTest.php        |  36 +-
 .../Tests/Tester/ApplicationTesterTest.php    |   4 +-
 .../Tests/Tester/CommandTesterTest.php        |   4 +-
 .../Component/Debug/DebugClassLoader.php      |  44 +--
 src/Symfony/Component/Debug/ErrorHandler.php  |  94 ++---
 .../Compiler/AbstractRecursivePass.php        |   2 +-
 .../Compiler/AnalyzeServiceReferencesPass.php |   2 +-
 ...xceptionOnInvalidReferenceBehaviorPass.php |   6 +-
 .../Compiler/InlineServiceDefinitionsPass.php |  14 +-
 .../Compiler/PassConfig.php                   |  48 +--
 .../Compiler/RegisterEnvVarProcessorsPass.php |   6 +-
 .../Compiler/RemoveUnusedDefinitionsPass.php  |   8 +-
 .../ReplaceAliasByActualDefinitionPass.php    |   2 +-
 .../ResolveInstanceofConditionalsPass.php     |  30 +-
 .../Compiler/ServiceLocatorTagPass.php        |   4 +-
 .../DependencyInjection/Container.php         |  44 +--
 .../DependencyInjection/ContainerBuilder.php  |  72 ++--
 .../DependencyInjection/Dumper/PhpDumper.php  | 116 +++---
 .../Loader/Configurator/Traits/LazyTrait.php  |   2 +-
 .../Loader/XmlFileLoader.php                  |  46 +--
 .../Loader/YamlFileLoader.php                 |  66 ++--
 .../DependencyInjection/ServiceLocator.php    |   6 +-
 .../AnalyzeServiceReferencesPassTest.php      |  20 +-
 .../Tests/Compiler/AutowirePassTest.php       |  10 +-
 ...tionOnInvalidReferenceBehaviorPassTest.php |   4 +-
 .../CustomExpressionLanguageFunctionTest.php  |   6 +-
 .../InlineServiceDefinitionsPassTest.php      |  40 +-
 .../RegisterEnvVarProcessorsPassTest.php      |  32 +-
 .../RegisterServiceSubscribersPassTest.php    |  44 +--
 .../RemoveUnusedDefinitionsPassTest.php       |  12 +-
 .../Compiler/ResolveBindingsPassTest.php      |  12 +-
 .../ResolveInstanceofConditionalsPassTest.php |  10 +-
 .../Compiler/ServiceLocatorTagPassTest.php    |  16 +-
 .../Tests/Dumper/PhpDumperTest.php            |   2 +-
 .../Tests/EnvVarProcessorTest.php             |  48 +--
 .../Tests/Loader/FileLoaderTest.php           |  36 +-
 .../Tests/Loader/PhpFileLoaderTest.php        |  20 +-
 .../Tests/Loader/XmlFileLoaderTest.php        |  12 +-
 .../Tests/Loader/YamlFileLoaderTest.php       |   6 +-
 .../Tests/ServiceLocatorTest.php              |  14 +-
 .../DomCrawler/AbstractUriElement.php         |   4 +-
 src/Symfony/Component/Dotenv/Dotenv.php       |   4 +-
 .../Component/Dotenv/Tests/DotenvTest.php     |   2 +-
 .../Debug/TraceableEventDispatcher.php        |  22 +-
 .../Filesystem/Tests/FilesystemTest.php       |  18 +-
 .../Finder/Iterator/SortableIterator.php      |   3 +-
 .../Component/Finder/Tests/FinderTest.php     | 322 +++++++--------
 .../Iterator/Da
741A
teRangeFilterIteratorTest.php  |  22 +-
 .../Iterator/DepthRangeFilterIteratorTest.php |  30 +-
 .../ExcludeDirectoryFilterIteratorTest.php    |  22 +-
 .../Iterator/FileTypeFilterIteratorTest.php   |  16 +-
 .../Tests/Iterator/RealIteratorTestCase.php   |   8 +-
 .../Tests/Iterator/SortableIteratorTest.php   |  72 ++--
 .../Component/Form/AbstractExtension.php      |   4 +-
 .../Component/Form/Command/DebugCommand.php   |   2 +-
 .../Form/Console/Descriptor/Descriptor.php    |  42 +-
 .../Console/Descriptor/JsonDescriptor.php     |  16 +-
 .../Console/Descriptor/TextDescriptor.php     |  40 +-
 .../Form/Extension/Core/Type/FormType.php     |  24 +-
 .../Form/Extension/Core/Type/IntegerType.php  |  10 +-
 .../Type/TransformationFailureExtension.php   |   2 +-
 .../EventListener/CsrfValidationListener.php  |   2 +-
 .../Csrf/Type/FormTypeCsrfExtension.php       |   2 +-
 .../Type/DataCollectorTypeExtension.php       |   2 +-
 .../DependencyInjectionExtension.php          |   4 +-
 .../Type/FormTypeHttpFoundationExtension.php  |   2 +-
 .../Type/FormTypeValidatorExtension.php       |   2 +-
 .../Type/RepeatedTypeValidatorExtension.php   |   2 +-
 .../Type/SubmitTypeValidatorExtension.php     |   2 +-
 .../Type/UploadValidatorExtension.php         |   2 +-
 src/Symfony/Component/Form/Form.php           |   2 +-
 .../Component/Form/FormConfigBuilder.php      |  12 +-
 .../Form/Tests/Command/DebugCommandTest.php   |  36 +-
 .../Descriptor/AbstractDescriptorTest.php     |  44 +--
 .../DependencyInjection/FormPassTest.php      | 242 ++++++------
 .../Csrf/Type/FormTypeCsrfExtensionTest.php   |   2 +-
 .../DependencyInjectionExtensionTest.php      |  32 +-
 .../Tests/Fixtures/ChoiceTypeExtension.php    |   2 +-
 .../Tests/Fixtures/FooTypeBarExtension.php    |   2 +-
 .../Tests/Fixtures/FooTypeBazExtension.php    |   2 +-
 .../Fixtures/LazyChoiceTypeExtension.php      |   2 +-
 .../Form/Tests/Fixtures/TestExtension.php     |   8 +-
 .../Component/HttpFoundation/HeaderUtils.php  |   4 +-
 .../Component/HttpFoundation/Request.php      | 104 ++---
 .../HttpFoundation/RequestMatcher.php         |  16 +-
 .../HttpFoundation/ResponseHeaderBag.php      |  30 +-
 .../HttpFoundation/Session/SessionUtils.php   |   2 +-
 .../Handler/AbstractSessionHandler.php        |   2 +-
 .../HttpFoundation/Tests/HeaderUtilsTest.php  |  32 +-
 .../Tests/RequestMatcherTest.php              |   4 +-
 .../Tests/ResponseHeaderBagTest.php           |  66 ++--
 .../Session/Attribute/AttributeBagTest.php    |  48 +--
 .../Handler/Fixtures/with_samesite.php        |   4 +-
 .../Fixtures/with_samesite_and_migration.php  |   4 +-
 .../CacheWarmer/CacheWarmerAggregate.php      |   8 +-
 .../DataCollector/DumpDataCollector.php       |  22 +-
 .../DataCollector/RequestDataCollector.php    |  44 +--
 .../AbstractTestSessionListener.php           |   4 +-
 .../EventListener/ExceptionListener.php       |  20 +-
 .../EventListener/SessionListener.php         |   2 +-
 .../EventListener/TestSessionListener.php     |   2 +-
 ...ntrollerDoesNotReturnResponseException.php |  20 +-
 src/Symfony/Component/HttpKernel/Kernel.php   |  52 +--
 ...sterControllerArgumentLocatorsPassTest.php |  86 ++--
 .../Tests/Fragment/FragmentHandlerTest.php    |   6 +-
 .../HttpKernel/Tests/HttpCache/EsiTest.php    |   4 +-
 .../HttpKernel/Tests/HttpCache/SsiTest.php    |   4 +-
 .../Data/Generator/LanguageDataGenerator.php  |  22 +-
 .../Intl/Data/Util/LocaleScanner.php          |   2 +-
 .../Tests/Data/Util/LocaleScannerTest.php     |   6 +-
 .../Intl/Tests/Locale/LocaleTest.php          |   8 +-
 .../Ldap/Adapter/ExtLdap/Connection.php       |   4 +-
 .../Ldap/Adapter/ExtLdap/EntryManager.php     |   2 +-
 .../Ldap/Adapter/ExtLdap/UpdateOperation.php  |   8 +-
 .../Tests/Adapter/ExtLdap/LdapManagerTest.php |  44 +--
 src/Symfony/Component/Lock/Lock.php           |  14 +-
 src/Symfony/Component/Lock/Store/PdoStore.php |  12 +-
 .../Component/Lock/Store/RedisStore.php       |  12 +-
 .../Component/Lock/Store/ZookeeperStore.php   |   4 +-
 .../Tests/Store/BlockingStoreTestTrait.php    |   8 +-
 .../Lock/Tests/Store/PdoDbalStoreTest.php     |   4 +-
 .../Lock/Tests/Store/ZookeeperStoreTest.php   |   2 +-
 .../Command/ConsumeMessagesCommand.php        |   8 +-
 .../DataCollector/MessengerDataCollector.php  |  22 +-
 .../DependencyInjection/MessengerPass.php     |  34 +-
 src/Symfony/Component/Messenger/Envelope.php  |   4 +-
 .../Messenger/Handler/HandlersLocator.php     |   8 +-
 .../Middleware/LoggingMiddleware.php          |   4 +-
 .../Command/ConsumeMessagesCommandTest.php    |   4 +-
 .../DependencyInjection/MessengerPassTest.php | 178 ++++-----
 .../Messenger/Tests/EnvelopeTest.php          |   2 +-
 .../Tests/Handler/HandlersLocatorTest.php     |  10 +-
 .../Messenger/Tests/MessageBusTest.php        |  14 +-
 .../Middleware/ActivationMiddlewareTest.php   |   2 +-
 .../HandleMessageMiddlewareTest.php           |  48 +--
 .../Middleware/SendMessageMiddlewareTest.php  |  24 +-
 .../Middleware/TraceableMiddlewareTest.php    |  12 +-
 .../Middleware/ValidationMiddlewareTest.php   |   2 +-
 .../Tests/Stamp/HandledStampTest.php          |  22 +-
 .../Tests/Stamp/SerializerStampTest.php       |   2 +-
 .../Tests/Stamp/ValidationStampTest.php       |   8 +-
 .../Tests/TraceableMessageBusTest.php         |  30 +-
 .../Transport/AmqpExt/AmqpSenderTest.php      |   2 +-
 .../AmqpExt/AmqpTransportFactoryTest.php      |  10 +-
 .../Transport/AmqpExt/AmqpTransportTest.php   |   4 +-
 .../Transport/Sender/SendersLocatorTest.php   |  18 +-
 .../Serialization/SerializerTest.php          |  14 +-
 .../Messenger/TraceableMessageBus.php         |   8 +-
 .../Transport/AmqpExt/AmqpReceiver.php        |   4 +-
 .../Transport/Sender/SendersLocator.php       |   6 +-
 .../Transport/Serialization/Serializer.php    |  18 +-
 .../OptionsResolver/OptionsResolver.php       |  66 ++--
 .../Tests/OptionsResolverTest.php             | 296 +++++++-------
 src/Symfony/Component/Process/Process.php     |   2 +-
 .../Tests/KillableProcessWithOutput.php       |   4 +-
 .../Tests/ProcessFailedExceptionTest.php      |   6 +-
 .../Component/Process/Tests/ProcessTest.php   | 198 +++++-----
 .../Extractor/ReflectionExtractor.php         |   2 +-
 .../PropertyInfoCacheExtractor.php            |  30 +-
 .../PropertyInfo/PropertyInfoExtractor.php    |  30 +-
 ...ropertyInitializableExtractorInterface.php |   2 +-
 .../AbstractPropertyInfoExtractorTest.php     |  16 +-
 .../PropertyInfoPassTest.php                  |  36 +-
 .../Tests/Extractor/PhpDocExtractorTest.php   | 230 +++++------
 .../Extractor/ReflectionExtractorTest.php     |  16 +-
 .../Tests/Fixtures/DummyExtractor.php         |   2 +-
 .../Tests/Fixtures/NullExtractor.php          |   2 +-
 .../Matcher/Dumper/PhpMatcherDumper.php       |  50 +--
 .../Matcher/Dumper/PhpMatcherTrait.php        |  22 +-
 .../Dumper/PhpGeneratorDumperTest.php         |  62 +--
 .../Tests/Loader/YamlFileLoaderTest.php       |   2 +-
 .../TraceableAccessDecisionManager.php        |  16 +-
 .../Authorization/Voter/ExpressionVoter.php   |   4 +-
 .../Authorization/ExpressionLanguageTest.php  |  82 ++--
 .../TraceableAccessDecisionManagerTest.php    | 234 +++++------
 .../Voter/TraceableVoterTest.php              |   6 +-
 .../Security/Core/User/LdapUserProvider.php   |   2 +-
 .../Security/Http/Tests/FirewallTest.php      |  12 +-
 ...istentTokenBasedRememberMeServicesTest.php |  44 +--
 .../TokenBasedRememberMeServicesTest.php      |  34 +-
 .../Serializer/Encoder/CsvEncoder.php         |  40 +-
 .../Serializer/Encoder/JsonDecode.php         |  12 +-
 .../Serializer/Encoder/JsonEncode.php         |   8 +-
 .../Serializer/Encoder/JsonEncoder.php        |   2 +-
 .../Serializer/Encoder/XmlEncoder.php         |  40 +-
 .../Serializer/Mapping/AttributeMetadata.php  |   4 +-
 .../AdvancedNameConverterInterface.php        |   4 +-
 .../MetadataAwareNameConverter.php            |  18 +-
 .../Normalizer/AbstractNormalizer.php         |  12 +-
 .../Normalizer/AbstractObjectNormalizer.php   |  34 +-
 .../ConstraintViolationListNormalizer.php     |  18 +-
 .../Normalizer/DateIntervalNormalizer.php     |   8 +-
 .../Normalizer/DateTimeNormalizer.php         |   8 +-
 .../Normalizer/ObjectNormalizer.php           |   2 +-
 .../Component/Serializer/Serializer.php       |  42 +-
 .../Tests/Annotation/SerializedNameTest.php   |  14 +-
 .../Tests/Encoder/CsvEncoderTest.php          | 168 ++++----
 .../Tests/Encoder/XmlEncoderTest.php          | 272 ++++++-------
 .../MetadataAwareNameConverterTest.php        |  20 +-
 .../Normalizer/AbstractNormalizerTest.php     |  32 +-
 .../AbstractObjectNormalizerTest.php          |   4 +-
 .../Normalizer/DateIntervalNormalizerTest.php |   4 +-
 .../Normalizer/DateTimeNormalizerTest.php     |   6 +-
 .../Normalizer/GetSetMethodNormalizerTest.php | 186 ++++-----
 .../JsonSerializableNormalizerTest.php        |   4 +-
 .../Tests/Normalizer/ObjectNormalizerTest.php | 372 +++++++++---------
 .../Normalizer/PropertyNormalizerTest.php     | 150 +++----
 .../Serializer/Tests/SerializerTest.php       |   8 +-
 .../Translation/Catalogue/MergeOperation.php  |  14 +-
 .../Translation/Catalogue/TargetOperation.php |  14 +-
 .../Translation/Command/XliffLintCommand.php  |  22 +-
 .../Translation/DataCollectorTranslator.php   |  18 +-
 .../Translation/Dumper/FileDumper.php         |   2 +-
 .../Translation/Formatter/IntlFormatter.php   |   6 +-
 .../Formatter/IntlFormatterInterface.php      |   2 +-
 .../Formatter/MessageFormatter.php            |  10 +-
 .../Translation/IdentityTranslator.php        |   4 +-
 .../Translation/Loader/XliffFileLoader.php    |  16 +-
 .../Translation/LoggingTranslator.php         |  12 +-
 .../Translation/MessageCatalogue.php          |  22 +-
 .../Tests/Catalogue/MergeOperationTest.php    |  12 +-
 .../Tests/Catalogue/TargetOperationTest.php   |  12 +-
 .../Tests/Command/XliffLintCommandTest.php    |  24 +-
 .../Tests/DataCollectorTranslatorTest.php     |  54 +--
 .../Tests/Dumper/FileDumperTest.php           |   8 +-
 .../Tests/Formatter/IntlFormatterTest.php     |  28 +-
 .../Tests/LoggingTranslatorTest.php           |   8 +-
 .../Tests/MessageCatalogueTest.php            |  78 ++--
 .../Translation/Tests/TranslatorCacheTest.php |  60 +--
 .../Translation/Tests/TranslatorTest.php      | 264 ++++++-------
 .../Component/Translation/Translator.php      |  24 +-
 .../Component/Translation/Util/XliffUtils.php |   8 +-
 .../Validator/Constraints/DivisibleBy.php     |   4 +-
 .../AddValidatorInitializersPass.php          |   8 +-
 .../Tests/Constraints/BicValidatorTest.php    |  60 +--
 .../Constraints/DivisibleByValidatorTest.php  |  42 +-
 .../AddValidatorInitializersPassTest.php      |   4 +-
 .../Validator/Util/LegacyTranslatorProxy.php  |   6 +-
 .../Component/Validator/ValidatorBuilder.php  |  12 +-
 .../Violation/ConstraintViolationBuilder.php  |   2 +-
 .../Component/VarDumper/Caster/ClassStub.php  |   2 +-
 .../Component/VarDumper/Caster/IntlCaster.php |  44 +--
 .../VarDumper/Caster/MemcachedCaster.php      |  10 +-
 .../VarDumper/Caster/RedisCaster.php          |  42 +-
 .../VarDumper/Caster/ReflectionCaster.php     |   2 +-
 .../VarDumper/Cloner/AbstractCloner.php       | 254 ++++++------
 .../Component/VarDumper/Dumper/HtmlDumper.php |  26 +-
 .../VarDumper/Tests/Caster/StubCasterTest.php |   6 +-
 src/Symfony/Component/VarDumper/VarDumper.php |   2 +-
 .../Component/VarExporter/Instantiator.php    |  12 +-
 .../VarExporter/Internal/Exporter.php         |  36 +-
 .../VarExporter/Internal/Hydrator.php         |  10 +-
 .../VarExporter/Internal/Registry.php         |  22 +-
 .../VarExporter/Tests/InstantiatorTest.php    |  26 +-
 .../VarExporter/Tests/VarExporterTest.php     |  94 ++---
 .../Component/VarExporter/VarExporter.php     |  14 +-
 .../Workflow/Dumper/GraphvizDumper.php        |  42 +-
 .../Component/Yaml/Command/LintCommand.php    |  10 +-
 src/Symfony/Component/Yaml/Parser.php         |   2 +-
 .../Yaml/Tests/Command/LintCommandTest.php    |   2 +-
 src/Symfony/Contracts/Cache/CacheTrait.php    |   2 +-
 .../Contracts/Service/ServiceLocatorTrait.php |   2 +-
 .../Service/ServiceSubscriberTrait.php        |   4 +-
 .../Contracts/Tests/Cache/CacheTraitTest.php  |  12 +-
 .../Tests/Service/ServiceLocatorTest.php      |  20 +-
 .../Service/ServiceSubscriberTraitTest.php    |   4 +-
 .../Tests/Translation/TranslatorTest.php      | 190 ++++-----
 .../Translation/TranslatorInterface.php       |   2 +-
 .../Contracts/Translation/TranslatorTrait.php |   6 +-
 416 files changed, 6404 insertions(+), 6403 deletions(-)

diff --git a/.php_cs.dist b/.php_cs.dist
index 3d9248193b3b..fd6832920b20 100644
--- a/.php_cs.dist
+++ b/.php_cs.dist
@@ -5,26 +5,26 @@ if (!file_exists(__DIR__.'/src')) {
 }
 
 return PhpCsFixer\Config::create()
-    ->setRules(array(
+    ->setRules([
         '@Symfony' => true,
         '@Symfony:risky' => true,
         '@PHPUnit48Migration:risky' => true,
         'php_unit_no_expectation_annotation' => false, // part of `PHPUnitXYMigration:risky` ruleset, to be enabled when PHPUnit 4.x support will be dropped, as we don't want to rewrite exceptions handling twice
-        'array_syntax' => array('syntax' => 'short'),
+        'array_syntax' => ['syntax' => 'short'],
         'fopen_flags' => false,
         'ordered_imports' => true,
         'protected_to_private' => false,
         // Part of @Symfony:risky in PHP-CS-Fixer 2.13.0. To be removed from the config file once upgrading
-        'native_function_invocation' => array('include' => array('@compiler_optimized'), 'scope' => 'namespaced'),
+        'native_function_invocation' => ['include' => ['@compiler_optimized'], 'scope' => 'namespaced'],
         // Part of future @Symfony ruleset in PHP-CS-Fixer To be removed from the config file once upgrading
-        'phpdoc_types_order' => array('null_adjustment' => 'always_last', 'sort_algorithm' => 'none'),
-    ))
+        'phpdoc_types_order' => ['null_adjustment' => 'always_last', 'sort_algorithm' => 'none'],
+    ])
     ->setRiskyAllowed(true)
     ->setFinder(
         PhpCsFixer\Finder::create()
             ->in(__DIR__.'/src')
-            ->append(array(__FILE__))
-            ->exclude(array(
+            ->append([__FILE__])
+            ->exclude([
                 'Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/Fixtures',
                 // directories containing files with content that is autogenerated by `var_export`, which breaks CS in output code
                 'Symfony/Component/DependencyInjection/Tests/Fixtures',
@@ -40,7 +40,7 @@ return PhpCsFixer\Config::create()
                 'Symfony/Bundle/FrameworkBundle/Resources/views/Form',
                 // explicit trigger_error tests
                 'Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/',
-            ))
+            ])
             // Support for older PHPunit version
             ->notPath('Symfony/Bridge/PhpUnit/SymfonyTestsListener.php')
             // file content autogenerated by `var_export`
diff --git a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPass.php b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPass.php
index 46904ebbf4cb..deaa64e7c908 100644
--- a/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPass.php
+++ b/src/Symfony/Bridge/Doctrine/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPass.php
@@ -66,13 +66,13 @@ private function addTaggedSubscribers(ContainerBuilder $container)
 
         foreach ($taggedSubscribers as $taggedSubscriber) {
             list($id, $tag) = $taggedSubscriber;
-            $connections = isset($tag['connection']) ? array($tag['connection']) : array_keys($this->connections);
+            $connections = isset($tag['connection']) ? [$tag['connection']] : array_keys($this->connections);
             foreach ($connections as $con) {
                 if (!isset($this->connections[$con])) {
                     throw new RuntimeException(sprintf('The Doctrine connection "%s" referenced in service "%s" does not exist. Available connections names: %s', $con, $id, implode(', ', array_keys($this->connections))));
                 }
 
-                $this->getEventManagerDef($container, $con)->addMethodCall('addEventSubscriber', array(new Reference($id)));
+                $this->getEventManagerDef($container, $con)->addMethodCall('addEventSubscriber', [new Reference($id)]);
             }
         }
     }
@@ -81,7 +81,7 @@ private function addTaggedListeners(ContainerBuilder $container)
     {
         $listenerTag = $this->tagPrefix.'.event_listener';
         $taggedListeners = $this->findAndSortTags($listenerTag, $container);
-        $listenerRefs = array();
+        $listenerRefs = [];
 
         foreach ($taggedListeners as $taggedListener) {
             list($id, $tag) = $taggedListener;
@@ -89,7 +89,7 @@ private function addTaggedListeners(ContainerBuilder $container)
                 throw new InvalidArgumentException(sprintf('Doctrine event listener "%s" must specify the "event" attribute.', $id));
             }
 
-            $connections = isset($tag['connection']) ? array($tag['connection']) : array_keys($this->connections);
+            $connections = isset($tag['connection']) ? [$tag['connection']] : array_keys($this->connections);
             foreach ($connections as $con) {
                 if (!isset($this->connections[$con])) {
                     throw new RuntimeException(sprintf('The Doctrine connection "%s" referenced in service "%s" does not exist. Available connections names: %s', $con, $id, implode(', ', array_keys($this->connections))));
@@ -97,7 +97,7 @@ private function addTaggedListeners(ContainerBuilder $container)
                 $listenerRefs[$con][$id] = new Reference($id);
 
                 // we add one call per event per service so we have the correct order
-                $this->getEventManagerDef($container, $con)->addMethodCall('addEventListener', array(array($tag['event']), $id));
+                $this->getEventManagerDef($container, $con)->addMethodCall('addEventListener', [[$tag['event']], $id]);
             }
         }
 
@@ -135,12 +135,12 @@ private function getEventManagerDef(ContainerBuilder $container, $name)
      */
     private function findAndSortTags($tagName, ContainerBuilder $container)
     {
-        $sortedTags = array();
+        $sortedTags = [];
 
         foreach ($container->findTaggedServiceIds($tagName, true) as $serviceId => $tags) {
             foreach ($tags as $attributes) {
                 $priority = isset($attributes['priority']) ? $attributes['priority'] : 0;
-                $sortedTags[$priority][] = array($serviceId, $attributes);
+                $sortedTags[$priority][] = [$serviceId, $attributes];
             }
         }
 
diff --git a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
index e85145d1eafb..d9f7f391d2f2 100644
--- a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
+++ b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
@@ -26,7 +26,7 @@ class DoctrineOrmTypeGuesser implements FormTypeGuesserInterface
 {
     protected $registry;
 
-    private $cache = array();
+    private $cache = [];
 
     public function __construct(ManagerRegistry $registry)
     {
@@ -39,7 +39,7 @@ public function __construct(ManagerRegistry $registry)
     public function guessType($class, $property)
     {
         if (!$ret = $this->getMetadata($class)) {
-            return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::LOW_CONFIDENCE);
+            return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
         }
 
         list($metadata, $name) = $ret;
@@ -48,45 +48,45 @@ public function guessType($class, $property)
             $multiple = $metadata->isCollectionValuedAssociation($property);
             $mapping = $metadata->getAssociationMapping($property);
 
-            return new TypeGuess('Symfony\Bridge\Doctrine\Form\Type\EntityType', array('em' => $name, 'class' => $mapping['targetEntity'], 'multiple' => $multiple), Guess::HIGH_CONFIDENCE);
+            return new TypeGuess('Symfony\Bridge\Doctrine\Form\Type\EntityType', ['em' => $name, 'class' => $mapping['targetEntity'], 'multiple' => $multiple], Guess::HIGH_CONFIDENCE);
         }
 
         switch ($metadata->getTypeOfField($property)) {
             case Type::TARRAY:
             case Type::SIMPLE_ARRAY:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CollectionType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::BOOLEAN:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\CheckboxType', [], Guess::HIGH_CONFIDENCE);
             case Type::DATETIME:
             case Type::DATETIMETZ:
             case 'vardatetime':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', [], Guess::HIGH_CONFIDENCE);
             case 'datetime_immutable':
             case 'datetimetz_immutable':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', array('input' => 'datetime_immutable'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateTimeType', ['input' => 'datetime_immutable'], Guess::HIGH_CONFIDENCE);
             case 'dateinterval':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateIntervalType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateIntervalType', [], Guess::HIGH_CONFIDENCE);
             case Type::DATE:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', [], Guess::HIGH_CONFIDENCE);
             case 'date_immutable':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', array('input' => 'datetime_immutable'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\DateType', ['input' => 'datetime_immutable'], Guess::HIGH_CONFIDENCE);
             case Type::TIME:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', array(), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', [], Guess::HIGH_CONFIDENCE);
             case 'time_immutable':
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', array('input' => 'datetime_immutable'), Guess::HIGH_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TimeType', ['input' => 'datetime_immutable'], Guess::HIGH_CONFIDENCE);
             case Type::DECIMAL:
             case Type::FLOAT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\NumberType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::INTEGER:
             case Type::BIGINT:
             case Type::SMALLINT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\IntegerType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::STRING:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::MEDIUM_CONFIDENCE);
             case Type::TEXT:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextareaType', array(), Guess::MEDIUM_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextareaType', [], Guess::MEDIUM_CONFIDENCE);
             default:
-                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', array(), Guess::LOW_CONFIDENCE);
+                return new TypeGuess('Symfony\Component\Form\Extension\Core\Type\TextType', [], Guess::LOW_CONFIDENCE);
         }
     }
 
@@ -141,7 +141,7 @@ public function guessMaxLength($class, $property)
                 return new ValueGuess($mapping['length'], Guess::HIGH_CONFIDENCE);
             }
 
-            if (\in_array($ret[0]->getTypeOfField($property), array(Type::DECIMAL, Type::FLOAT))) {
+            if (\in_array($ret[0]->getTypeOfField($property), [Type::DECIMAL, Type::FLOAT])) {
                 return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
             }
         }
@@ -154,7 +154,7 @@ public function guessPattern($class, $property)
     {
         $ret = $this->getMetadata($class);
         if ($ret && isset($ret[0]->fieldMappings[$property]) && !$ret[0]->hasAssociation($property)) {
-            if (\in_array($ret[0]->getTypeOfField($property), array(Type::DECIMAL, Type::FLOAT))) {
+            if (\in_array($ret[0]->getTypeOfField($property), [Type::DECIMAL, Type::FLOAT])) {
                 return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
             }
         }
@@ -172,7 +172,7 @@ protected function getMetadata($class)
         $this->cache[$class] = null;
         foreach ($this->registry->getManagers() as $name => $em) {
             try {
-                return $this->cache[$class] = array($em->getClassMetadata($class), $name);
+                return $this->cache[$class] = [$em->getClassMetadata($class), $name];
             } catch (MappingException $e) {
                 // not an entity or mapped super class
             } catch (LegacyMappingException $e) {
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPassTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPassTest.php
index dfdfecc094a0..ca75437b769f 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPassTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterEventListenersAndSubscribersPassTest.php
@@ -46,7 +46,7 @@ public function testExceptionOnAbstractTaggedListener()
 
         $abstractDefinition = new Definition('stdClass');
         $abstractDefinition->setAbstract(true);
-        $abstractDefinition->addTag('doctrine.event_listener', array('event' => 'test'));
+        $abstractDefinition->addTag('doctrine.event_listener', ['event' => 'test']);
 
         $container->setDefinition('a', $abstractDefinition);
 
@@ -60,30 +60,30 @@ public function testProcessEventListenersWithPriorities()
         $container
             ->register('a', 'stdClass')
             ->setPublic(false)
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'bar',
-            ))
-            ->addTag('doctrine.event_listener', array(
+            ])
+            ->addTag('doctrine.event_listener', [
                 'event' => 'foo',
                 'priority' => -5,
-            ))
-            ->addTag('doctrine.event_listener', array(
+            ])
+            ->addTag('doctrine.event_listener', [
                 'event' => 'foo_bar',
                 'priority' => 3,
-            ))
+            ])
         ;
         $container
             ->register('b', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'foo',
-            ))
+            ])
         ;
         $container
             ->register('c', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'foo_bar',
                 'priority' => 4,
-            ))
+            ])
         ;
 
         $this->process($container);
@@ -91,24 +91,24 @@ public function testProcessEventListenersWithPriorities()
         $methodCalls = $eventManagerDef->getMethodCalls();
 
         $this->assertEquals(
-            array(
-                array('addEventListener', array(array('foo_bar'), 'c')),
-                array('addEventListener', array(array('foo_bar'), 'a')),
-                array('addEventListener', array(array('bar'), 'a')),
-                array('addEventListener', array(array('foo'), 'b')),
-                array('addEventListener', array(array('foo'), 'a')),
-            ),
+            [
+                ['addEventListener', [['foo_bar'], 'c']],
+                ['addEventListener', [['foo_bar'], 'a']],
+                ['addEventListener', [['bar'], 'a']],
+                ['a
F438
ddEventListener', [['foo'], 'b']],
+                ['addEventListener', [['foo'], 'a']],
+            ],
             $methodCalls
         );
 
         $serviceLocatorDef = $container->getDefinition((string) $eventManagerDef->getArgument(0));
         $this->assertSame(ServiceLocator::class, $serviceLocatorDef->getClass());
         $this->assertEquals(
-            array(
+            [
                 'c' => new ServiceClosureArgument(new Reference('c')),
                 'a' => new ServiceClosureArgument(new Reference('a')),
                 'b' => new ServiceClosureArgument(new Reference('b')),
-            ),
+            ],
             $serviceLocatorDef->getArgument(0)
         );
     }
@@ -119,25 +119,25 @@ public function testProcessEventListenersWithMultipleConnections()
 
         $container
             ->register('a', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'onFlush',
-            ))
+            ])
         ;
 
         $container
             ->register('b', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'onFlush',
                 'connection' => 'default',
-            ))
+            ])
         ;
 
         $container
             ->register('c', 'stdClass')
-            ->addTag('doctrine.event_listener', array(
+            ->addTag('doctrine.event_listener', [
                 'event' => 'onFlush',
                 'connection' => 'second',
-            ))
+            ])
         ;
 
         $this->process($container);
@@ -146,40 +146,40 @@ public function testProcessEventListenersWithMultipleConnections()
 
         // first connection
         $this->assertEquals(
-            array(
-                array('addEventListener', array(array('onFlush'), 'a')),
-                array('addEventListener', array(array('onFlush'), 'b')),
-            ),
+            [
+                ['addEventListener', [['onFlush'], 'a']],
+                ['addEventListener', [['onFlush'], 'b']],
+            ],
             $eventManagerDef->getMethodCalls()
         );
 
         $serviceLocatorDef = $container->getDefinition((string) $eventManagerDef->getArgument(0));
         $this->assertSame(ServiceLocator::class, $serviceLocatorDef->getClass());
         $this->assertEquals(
-            array(
+            [
                 'a' => new ServiceClosureArgument(new Reference('a')),
                 'b' => new ServiceClosureArgument(new Reference('b')),
-            ),
+            ],
             $serviceLocatorDef->getArgument(0)
         );
 
         // second connection
         $secondEventManagerDef = $container->getDefinition('doctrine.dbal.second_connection.event_manager');
         $this->assertEquals(
-            array(
-                array('addEventListener', array(array('onFlush'), 'a')),
-                array('addEventListener', array(array('onFlush'), 'c')),
-            ),
+            [
+                ['addEventListener', [['onFlush'], 'a']],
+                ['addEventListener', [['onFlush'], 'c']],
+            ],
             $secondEventManagerDef->getMethodCalls()
         );
 
         $serviceLocatorDef = $container->getDefinition((string) $secondEventManagerDef->getArgument(0));
         $this->assertSame(ServiceLocator::class, $serviceLocatorDef->getClass());
         $this->assertEquals(
-            array(
+            [
                 'a' => new ServiceClosureArgument(new Reference('a')),
                 'c' => new ServiceClosureArgument(new Reference('c')),
-            ),
+            ],
             $serviceLocatorDef->getArgument(0)
         );
     }
@@ -190,42 +190,42 @@ public function testProcessEventSubscribersWithMultipleConnections()
 
         $container
             ->register('a', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'event' => 'onFlush',
-            ))
+            ])
         ;
 
         $container
             ->register('b', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'event' => 'onFlush',
                 'connection' => 'default',
-            ))
+            ])
         ;
 
         $container
             ->register('c', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'event' => 'onFlush',
                 'connection' => 'second',
-            ))
+            ])
         ;
 
         $this->process($container);
 
         $this->assertEquals(
-            array(
-                array('addEventSubscriber', array(new Reference('a'))),
-                array('addEventSubscriber', array(new Reference('b'))),
-            ),
+            [
+                ['addEventSubscriber', [new Reference('a')]],
+                ['addEventSubscriber', [new Reference('b')]],
+            ],
             $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls()
         );
 
         $this->assertEquals(
-            array(
-                array('addEventSubscriber', array(new Reference('a'))),
-                array('addEventSubscriber', array(new Reference('c'))),
-            ),
+            [
+                ['addEventSubscriber', [new Reference('a')]],
+                ['addEventSubscriber', [new Reference('c')]],
+            ],
             $container->getDefinition('doctrine.dbal.second_connection.event_manager')->getMethodCalls()
         );
     }
@@ -240,39 +240,39 @@ public function testProcessEventSubscribersWithPriorities()
         ;
         $container
             ->register('b', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'priority' => 5,
-            ))
+            ])
         ;
         $container
             ->register('c', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'priority' => 10,
-            ))
+            ])
         ;
         $container
             ->register('d', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'priority' => 10,
-            ))
+            ])
         ;
         $container
             ->register('e', 'stdClass')
-            ->addTag('doctrine.event_subscriber', array(
+            ->addTag('doctrine.event_subscriber', [
                 'priority' => 10,
-            ))
+            ])
         ;
 
         $this->process($container);
 
         $this->assertEquals(
-            array(
-                array('addEventSubscriber', array(new Reference('c'))),
-                array('addEventSubscriber', array(new Reference('d'))),
-                array('addEventSubscriber', array(new Reference('e'))),
-                array('addEventSubscriber', array(new Reference('b'))),
-                array('addEventSubscriber', array(new Reference('a'))),
-            ),
+            [
+                ['addEventSubscriber', [new Reference('c')]],
+                ['addEventSubscriber', [new Reference('d')]],
+                ['addEventSubscriber', [new Reference('e')]],
+                ['addEventSubscriber', [new Reference('b')]],
+                ['addEventSubscriber', [new Reference('a')]],
+            ],
             $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls()
         );
     }
@@ -283,9 +283,9 @@ public function testProcessNoTaggedServices()
 
         $this->process($container);
 
-        $this->assertEquals(array(), $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls());
+        $this->assertEquals([], $container->getDefinition('doctrine.dbal.default_connection.event_manager')->getMethodCalls());
 
-        $this->assertEquals(array(), $container->getDefinition('doctrine.dbal.second_connection.event_manager')->getMethodCalls());
+        $this->assertEquals([], $container->getDefinition('doctrine.dbal.second_connection.event_manager')->getMethodCalls());
     }
 
     private function process(ContainerBuilder $container)
@@ -298,7 +298,7 @@ private function createBuilder($multipleConnections = false)
     {
         $container = new ContainerBuilder();
 
-        $connections = array('default' => 'doctrine.dbal.default_connection');
+        $connections = ['default' => 'doctrine.dbal.default_connection'];
 
         $container->register('doctrine.dbal.default_connection.event_manager', 'stdClass')
             ->addArgument(new Reference('service_container'));
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
index cc99e4f5f690..638e47ef3dff 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/DoctrineExtensionTest.php
@@ -32,13 +32,13 @@ protected function setUp()
 
         $this->extension = $this
             ->getMockBuilder('Symfony\Bridge\Doctrine\DependencyInjection\AbstractDoctrineExtension')
-            ->setMethods(array(
+            ->setMethods([
                 'getMappingResourceConfigDirectory',
                 'getObjectManagerElementName',
                 'getMappingObjectDefaultName',
                 'getMappingResourceExtension',
                 'load',
-            ))
+            ])
             ->getMock()
         ;
 
@@ -54,19 +54,19 @@ protected function setUp()
      */
     public function testFixManagersAutoMappingsWithTwoAutomappings()
     {
-        $emConfigs = array(
-            'em1' => array(
+        $emConfigs = [
+            'em1' => [
                 'auto_mapping' => true,
-            ),
-            'em2' => array(
+            ],
+            'em2' => [
                 'auto_mapping' => true,
-            ),
-        );
+            ],
+        ];
 
-        $bundles = array(
+        $bundles = [
             'FirstBundle' => 'My\FirstBundle',
             'SecondBundle' => 'My\SecondBundle',
-        );
+        ];
 
         $reflection = new \ReflectionClass(\get_class($this->extension));
         $method = $reflection->getMethod('fixManagersAutoMappings');
@@ -77,69 +77,69 @@ public function testFixManagersAutoMappingsWithTwoAutomappings()
 
     public function getAutomappingData()
     {
-        return array(
-            array(
-                array( // no auto mapping on em1
+        return [
+            [
+                [ // no auto mapping on em1
                     'auto_mapping' => false,
-                ),
-                array( // no auto mapping on em2
+                ],
+                [ // no auto mapping on em2
                     'auto_mapping' => false,
-                ),
-                array(),
-                array(),
-            ),
-            array(
-                array( // no auto mapping on em1
+                ],
+                [],
+                [],
+            ],
+            [
+                [ // no auto mapping on em1
                     'auto_mapping' => false,
-                ),
-                array( // auto mapping enabled on em2
+                ],
+                [ // auto mapping enabled on em2
                     'auto_mapping' => true,
-                ),
-                array(),
-                array(
-                    'mappings' => array(
-                        'FirstBundle' => array(
+                ],
+                [],
+                [
+                    'mappings' => [
+                        'FirstBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                        'SecondBundle' => array(
+                        ],
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-            ),
-            array(
-                array( // no auto mapping on em1, but it defines SecondBundle as own
+                        ],
+                    ],
+                ],
+            ],
+            [
+                [ // no auto mapping on em1, but it defines SecondBundle as own
                     'auto_mapping' => false,
-                    'mappings' => array(
-                        'SecondBundle' => array(
+                    'mappings' => [
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-                array( // auto mapping enabled on em2
+                        ],
+                    ],
+                ],
+                [ // auto mapping enabled on em2
                     'auto_mapping' => true,
-                ),
-                array(
-                    'mappings' => array(
-                        'SecondBundle' => array(
+                ],
+                [
+                    'mappings' => [
+                        'SecondBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-                array(
-                    'mappings' => array(
-                        'FirstBundle' => array(
+                        ],
+                    ],
+                ],
+                [
+                    'mappings' => [
+                        'FirstBundle' => [
                             'mapping' => true,
                             'is_bundle' => true,
-                        ),
-                    ),
-                ),
-            ),
-        );
+                        ],
+                    ],
+                ],
+            ],
+        ];
     }
 
     /**
@@ -147,15 +147,15 @@ public function getAutomappingData()
      */
     public function testFixManagersAutoMappings(array $originalEm1, array $originalEm2, array $expectedEm1, array $expectedEm2)
     {
-        $emConfigs = array(
+        $emConfigs = [
             'em1' => $originalEm1,
             'em2' => $originalEm2,
-        );
+        ];
 
-        $bundles = array(
+        $bundles = [
             'FirstBundle' => 'My\FirstBundle',
             'SecondBundle' => 'My\SecondBundle',
-        );
+        ];
 
         $reflection = new \ReflectionClass(\get_class($this->extension));
         $method = $reflection->getMethod('fixManagersAutoMappings');
@@ -163,39 +163,39 @@ public function testFixManagersAutoMappings(array $originalEm1, array $originalE
 
         $newEmConfigs = $method->invoke($this->extension, $emConfigs, $bundles);
 
-        $this->assertEquals($newEmConfigs['em1'], array_merge(array(
+        $this->assertEquals($newEmConfigs['em1'], array_merge([
             'auto_mapping' => false,
-        ), $expectedEm1));
-        $this->assertEquals($newEmConfigs['em2'], array_merge(array(
+        ], $expectedEm1));
+        $this->assertEquals($newEmConfigs['em2'], array_merge([
             'auto_mapping' => false,
-        ), $expectedEm2));
+        ], $expectedEm2));
     }
 
     public function providerBasicDrivers()
     {
-        return array(
-            array('doctrine.orm.cache.apc.class',       array('type' => 'apc')),
-            array('doctrine.orm.cache.apcu.class',      array('type' => 'apcu')),
-            array('doctrine.orm.cache.array.class',     array('type' => 'array')),
-            array('doctrine.orm.cache.xcache.class',    array('type' => 'xcache')),
-            array('doctrine.orm.cache.wincache.class',  array('type' => 'wincache')),
-            array('doctrine.orm.cache.zenddata.class',  array('type' => 'zenddata')),
-            array('doctrine.orm.cache.redis.class',     array('type' => 'redis'),     array('setRedis')),
-            array('doctrine.orm.cache.memcached.class', array('type' => 'memcached'), array('setMemcached')),
-        );
+        return [
+            ['doctrine.orm.cache.apc.class',       ['type' => 'apc']],
+            ['doctrine.orm.cache.apcu.class',      ['type' => 'apcu']],
+            ['doctrine.orm.cache.array.class',     ['type' => 'array']],
+            ['doctrine.orm.cache.xcache.class',    ['type' => 'xcache']],
+            ['doctrine.orm.cache.wincache.class',  ['type' => 'wincache']],
+            ['doctrine.orm.cache.zenddata.class',  ['type' => 'zenddata']],
+            ['doctrine.orm.cache.redis.class',     ['type' => 'redis'],     ['setRedis']],
+            ['doctrine.orm.cache.memcached.class', ['type' => 'memcached'], ['setMemcached']],
+        ];
     }
 
     /**
      * @dataProvider providerBasicDrivers
      */
-    public function testLoadBasicCacheDriver(string $class, array $config, array $expectedCalls = array())
+    public function testLoadBasicCacheDriver(string $class, array $config, array $expectedCalls = [])
     {
         $container = $this->createContainer();
         $cacheName = 'metadata_cache';
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
             'metadata_cache_driver' => $config,
-        );
+        ];
 
         $this->invokeLoadCacheDriver($objectManager, $container, $cacheName);
 
@@ -219,13 +219,13 @@ public function testServiceCacheDriver()
         $cacheName = 'metadata_cache';
         $container = $this->createContainer();
         $definition = new Definition('%doctrine.orm.cache.apc.class%');
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
-            'metadata_cache_driver' => array(
+            'metadata_cache_driver' => [
                 'type' => 'service',
                 'id' => 'service_driver',
-            ),
-        );
+            ],
+        ];
 
         $container->setDefinition('service_driver', $definition);
 
@@ -242,12 +242,12 @@ public function testUnrecognizedCacheDriverException()
     {
         $cacheName = 'metadata_cache';
         $container = $this->createContainer();
-        $objectManager = array(
+        $objectManager = [
             'name' => 'default',
-            'metadata_cache_driver' => array(
+            'metadata_cache_driver' => [
                 'type' => 'unrecognized_type',
-            ),
-        );
+            ],
+        ];
 
         $this->invokeLoadCacheDriver($objectManager, $container, $cacheName);
     }
@@ -258,19 +258,19 @@ protected function invokeLoadCacheDriver(array $objectManager, ContainerBuilder
 
         $method->setAccessible(true);
 
-        $method->invokeArgs($this->extension, array($objectManager, $container, $cacheName));
+        $method->invokeArgs($this->extension, [$objectManager, $container, $cacheName]);
     }
 
     /**
      * @return \Symfony\Component\DependencyInjection\ContainerBuilder
      */
-    protected function createContainer(array $data = array())
+    protected function createContainer(array $data = [])
     {
-        return new ContainerBuilder(new ParameterBag(array_merge(array(
-            'kernel.bundles' => array('FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'),
+        return new ContainerBuilder(new ParameterBag(array_merge([
+            'kernel.bundles' => ['FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'],
             'kernel.cache_dir' => __DIR__,
             'kernel.container_class' => 'kernel',
             'kernel.project_dir' => __DIR__,
-        ), $data)));
+        ], $data)));
     }
 }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php b/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
index 498c5ecbc95c..ace1d447c2b6 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
@@ -25,8 +25,8 @@ class DoctrineExtractorTest extends TestCase
 {
     private function createExtractor(bool $legacy = false)
     {
-        $config = Setup::createAnnotationMetadataConfiguration(array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'), true);
-        $entityManager = EntityManager::create(array('driver' => 'pdo_sqlite'), $config);
+        $config = Setup::createAnnotationMetadataConfiguration([__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'], true);
+        $entityManager = EntityManager::create(['driver' => 'pdo_sqlite'], $config);
 
         if (!DBALType::hasType('foo')) {
             DBALType::addType('foo', 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineFooType');
@@ -49,7 +49,7 @@ public function testLegacyGetProperties()
     private function doTestGetProperties(bool $legacy)
     {
         $this->assertEquals(
-             array(
+             [
                 'id',
                 'guid',
                 'time',
@@ -67,7 +67,7 @@ private function doTestGetProperties(bool $legacy)
                 'bar',
                 'indexedBar',
                 'indexedFoo',
-            ),
+            ],
             $this->createExtractor($legacy)->getProperties('Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineDummy')
         );
     }
@@ -89,10 +89,10 @@ private function doTestGetPropertiesWithEmbedded(bool $legacy)
         }
 
         $this->assertEquals(
-            array(
+            [
                 'id',
                 'embedded',
-            ),
+            ],
             $this->createExtractor($legacy)->getProperties('Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineWithEmbedded')
         );
     }
@@ -115,7 +115,7 @@ public function testLegacyExtract($property, array $type = null)
 
     private function doTestExtract(bool $legacy, $property, array $type = null)
     {
-        $this->assertEquals($type, $this->createExtractor($legacy)->getTypes('Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineDummy', $property, array()));
+        $this->assertEquals($type, $this->createExtractor($legacy)->getTypes('Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineDummy', $property, []));
     }
 
     public function testExtractWithEmbedded()
@@ -134,16 +134,16 @@ private function doTestExtractWithEmbedded(bool $legacy)
             $this->markTestSkipped('@Embedded is not available in Doctrine ORM lower than 2.5.');
         }
 
-        $expectedTypes = array(new Type(
+        $expectedTypes = [new Type(
             Type::BUILTIN_TYPE_OBJECT,
             false,
             'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineEmbeddable'
-        ));
+        )];
 
         $actualTypes = $this->createExtractor($legacy)->getTypes(
             'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineWithEmbedded',
             'embedded',
-            array()
+            []
         );
 
         $this->assertEquals($expectedTypes, $actualTypes);
@@ -151,47 +151,47 @@ private function doTestExtractWithEmbedded(bool $legacy)
 
     public function typesProvider()
     {
-        return array(
-            array('id', array(new Type(Type::BUILTIN_TYPE_INT))),
-            array('guid', array(new Type(Type::BUILTIN_TYPE_STRING))),
-            array('bigint', array(new Type(Type::BUILTIN_TYPE_STRING))),
-            array('time', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))),
-            array('timeImmutable', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTimeImmutable'))),
-            array('dateInterval', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateInterval'))),
-            array('float', array(new Type(Type::BUILTIN_TYPE_FLOAT))),
-            array('decimal', array(new Type(Type::BUILTIN_TYPE_STRING))),
-            array('bool', array(new Type(Type::BUILTIN_TYPE_BOOL))),
-            array('binary', array(new Type(Type::BUILTIN_TYPE_RESOURCE))),
-            array('json', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true))),
-            array('foo', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation'))),
-            array('bar', array(new Type(
+        return [
+            ['id', [new Type(Type::BUILTIN_TYPE_INT)]],
+            ['guid', [new Type(Type::BUILTIN_TYPE_STRING)]],
+            ['bigint', [new Type(Type::BUILTIN_TYPE_STRING)]],
+            ['time', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')]],
+            ['timeImmutable', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTimeImmutable')]],
+            ['dateInterval', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateInterval')]],
+            ['float', [new Type(Type::BUILTIN_TYPE_FLOAT)]],
+            ['decimal', [new Type(Type::BUILTIN_TYPE_STRING)]],
+            ['bool', [new Type(Type::BUILTIN_TYPE_BOOL)]],
+            ['binary', [new Type(Type::BUILTIN_TYPE_RESOURCE)]],
+            ['json', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true)]],
+            ['foo', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation')]],
+            ['bar', [new Type(
                 Type::BUILTIN_TYPE_OBJECT,
                 false,
                 'Doctrine\Common\Collections\Collection',
                 true,
                 new Type(Type::BUILTIN_TYPE_INT),
                 new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation')
-            ))),
-            array('indexedBar', array(new Type(
+            )]],
+            ['indexedBar', [new Type(
                 Type::BUILTIN_TYPE_OBJECT,
                 false,
                 'Doctrine\Common\Collections\Collection',
                 true,
                 new Type(Type::BUILTIN_TYPE_STRING),
                 new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation')
-            ))),
-            array('indexedFoo', array(new Type(
+            )]],
+            ['indexedFoo', [new Type(
                 Type::BUILTIN_TYPE_OBJECT,
                 false,
                 'Doctrine\Common\Collections\Collection',
                 true,
                 new Type(Type::BUILTIN_TYPE_STRING),
                 new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Bridge\Doctrine\Tests\PropertyInfo\Fixtures\DoctrineRelation')
-            ))),
-            array('simpleArray', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING)))),
-            array('customFoo', null),
-            array('notMapped', null),
-        );
+            )]],
+            ['simpleArray', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))]],
+            ['customFoo', null],
+            ['notMapped', null],
+        ];
     }
 
     public function testGetPropertiesCatchException()
diff --git a/src/Symfony/Bridge/Monolog/Logger.php b/src/Symfony/Bridge/Monolog/Logger.php
index 1d896f4ac4f2..de021426e03b 100644
--- a/src/Symfony/Bridge/Monolog/Logger.php
+++ b/src/Symfony/Bridge/Monolog/Logger.php
@@ -36,7 +36,7 @@ public function getLogs(/* Request $request = null */)
             return $logger->getLogs(...\func_get_args());
         }
 
-        return array();
+        return [];
     }
 
     /**
diff --git a/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php b/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
index 6ffade80731b..2ee7bc7d930a 100644
--- a/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
+++ b/src/Symfony/Bridge/Monolog/Tests/LoggerTest.php
@@ -22,16 +22,16 @@ class LoggerTest extends TestCase
     public function testGetLogsWithoutDebugProcessor()
     {
         $handler = new TestHandler();
-        $logger = new Logger(__METHOD__, array($handler));
+        $logger = new Logger(__METHOD__, [$handler]);
 
         $logger->error('error message');
-        $this->assertSame(array(), $logger->getLogs());
+        $this->assertSame([], $logger->getLogs());
     }
 
     public function testCountErrorsWithoutDebugProcessor()
     {
         $handler = new TestHandler();
-        $logger = new Logger(__METHOD__, array($handler));
+        $logger = new Logger(__METHOD__, [$handler]);
 
         $logger->error('error message');
         $this->assertSame(0, $logger->countErrors());
@@ -41,7 +41,7 @@ public function testGetLogsWithDebugProcessor()
     {
         $handler = new TestHandler();
         $processor = new DebugProcessor();
-        $logger = new Logger(__METHOD__, array($handler), array($processor));
+        $logger = new Logger(__METHOD__, [$handler], [$processor]);
 
         $logger->error('error message');
         $this->assertCount(1, $logger->getLogs());
@@ -51,7 +51,7 @@ public function testCountErrorsWithDebugProcessor()
     {
         $handler = new TestHandler();
         $processor = new DebugProcessor();
-        $logger = new Logger(__METHOD__, array($handler), array($processor));
+        $logger = new Logger(__METHOD__, [$handler], [$processor]);
 
         $logger->debug('test message');
         $logger->info('test message');
@@ -69,7 +69,7 @@ public function testCountErrorsWithDebugProcessor()
     public function testGetLogsWithDebugProcessor2()
     {
         $handler = new TestHandler();
-        $logger = new Logger('test', array($handler));
+        $logger = new Logger('test', [$handler]);
         $logger->pushProcessor(new DebugProcessor());
 
         $logger->info('test');
@@ -88,7 +88,7 @@ public function testGetLogsWithDebugProcessor3()
         $processor->expects($this->once())->method('countErrors')->with($request);
 
         $handler = new TestHandler();
-        $logger = new Logger('test', array($handler));
+        $logger = new Logger('test', [$handler]);
         $logger->pushProcessor($processor);
 
         $logger->getLogs($request);
@@ -98,7 +98,7 @@ public function testGetLogsWithDebugProcessor3()
     public function testClear()
     {
         $handler = new TestHandler();
-        $logger = new Logger('test', array($handler));
+        $logger = new Logger('test', [$handler]);
         $logger->pushProcessor(new DebugProcessor());
 
         $logger->info('test');
diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
index b1dc1cf66a2e..a72891aa5d34 100644
--- a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
+++ b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
@@ -94,18 +94,18 @@ public function testCorrectAssigning(Definition $definition, $access)
 
     public function getPrivatePublicDefinitions()
     {
-        return array(
-            array(
+        return [
+            [
                 (new Definition(__CLASS__))
                     ->setPublic(false),
                 'privates',
-            ),
-            array(
+            ],
+            [
                 (new Definition(__CLASS__))
                     ->setPublic(true),
                 'services',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -125,8 +125,8 @@ public function testGetProxyFactoryCodeForInterface()
         $definition = new Definition($class);
 
         $definition->setLazy(true);
-        $definition->addTag('proxy', array('interface' => DummyInterface::class));
-        $definition->addTag('proxy', array('interface' => SunnyInterface::class));
+        $definition->addTag('proxy', ['interface' => DummyInterface::class]);
+        $definition->addTag('proxy', ['interface' => SunnyInterface::class]);
 
         $implem = "<?php\n\n".$this->dumper->getProxyCode($definition);
         $factory = $this->dumper->getProxyFactoryCode($definition, 'foo', '$this->getFooService(false)');
@@ -179,12 +179,12 @@ protected function createProxy(\$class, \Closure \$factory)
      */
     public function getProxyCandidates()
     {
-        $definitions = array(
-            array(new Definition(__CLASS__), true),
-            array(new Definition('stdClass'), true),
-            array(new Definition(uniqid('foo', true)), false),
-            array(new Definition(), false),
-        );
+        $definitions = [
+            [new Definition(__CLASS__), true],
+            [new Definition('stdClass'), true],
+            [new Definition(uniqid('foo', true)), false],
+            [new Definition(), false],
+        ];
 
         array_map(
             function ($definition) {
diff --git a/src/Symfony/Bridge/Twig/Command/DebugCommand.php b/src/Symfony/Bridge/Twig/Command/DebugCommand.php
index e9d9eda30e05..5ff57e1cf49f 100644
--- a/src/Symfony/Bridge/Twig/Command/DebugCommand.php
+++ b/src/Symfony/Bridge/Twig/Command/DebugCommand.php
@@ -37,7 +37,7 @@ class DebugCommand extends Command
     private $twigDefaultPath;
     private $rootDir;
 
-    public function __construct(Environment $twig, string $projectDir = null, array $bundlesMetadata = array(), string $twigDefaultPath = null, string $rootDir = null)
+    public function __construct(Environment $twig, string $projectDir = null, array $bundlesMetadata = [], string $twigDefaultPath = null, string $rootDir = null)
     {
         parent::__construct();
 
@@ -51,11 +51,11 @@ public function __construct(Environment $twig, string $projectDir = null, array
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::OPTIONAL, 'The template name'),
                 new InputOption('filter', null, InputOption::VALUE_REQUIRED, 'Show details for all entries matching this filter'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (text or json)', 'text'),
-            ))
+            ])
             ->setDescription('Shows a list of twig functions, filters, globals and tests')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command outputs a list of twig functions,
@@ -115,11 +115,11 @@ private function displayPathsText(SymfonyStyle $io, string $name)
                 $io->listing($files);
             }
         } else {
-            $alternatives = array();
+            $alternatives = [];
 
             if ($paths) {
-                $shortnames = array();
-                $dirs = array();
+                $shortnames = [];
+                $dirs = [];
                 foreach (current($paths) as $path) {
                     $dirs[] = $this->isAbsolutePath($path) ? $path : $this->projectDir.'/'.$path;
                 }
@@ -141,9 +141,9 @@ private function displayPathsText(SymfonyStyle $io, string $name)
 
         $io->section('Configured Paths');
         if ($paths) {
-            $io->table(array('Namespace', 'Paths'), $this->buildTableRows($paths));
+            $io->table(['Namespace', 'Paths'], $this->buildTableRows($paths));
         } else {
-            $alternatives = array();
+            $alternatives = [];
             $namespace = $this->parseTemplateName($name)[0];
 
             if (FilesystemLoader::MAIN_NAMESPACE === $namespace) {
@@ -159,7 +159,7 @@ private function displayPathsText(SymfonyStyle $io, string $name)
             $this->error($io, $message, $alternatives);
 
             if (!$alternatives && $paths = $this->getLoaderPaths()) {
-                $io->table(array('Namespace', 'Paths'), $this->buildTableRows($paths));
+                $io->table(['Namespace', 'Paths'], $this->buildTableRows($paths));
             }
         }
     }
@@ -184,9 +184,9 @@ private function displayPathsJson(SymfonyStyle $io, string $name)
 
     private function displayGeneralText(SymfonyStyle $io, string $filter = null)
     {
-        $types = array('functions', 'filters', 'tests', 'globals');
+        $types = ['functions', 'filters', 'tests', 'globals'];
         foreach ($types as $index => $type) {
-            $items = array();
+            $items = [];
             foreach ($this->twig->{'get'.ucfirst($type)}() as $name => $entity) {
                 if (!$filter || false !== strpos($name, $filter)) {
                     $items[$name] = $name.$this->getPrettyMetadata($type, $entity);
@@ -205,7 +205,7 @@ private function displayGeneralText(SymfonyStyle $io, string $filter = null)
 
         if (!$filter && $paths = $this->getLoaderPaths()) {
             $io->section('Loader Paths');
-            $io->table(array('Namespace', 'Paths'), $this->buildTableRows($paths));
+            $io->table(['Namespace', 'Paths'], $this->buildTableRows($paths));
         }
 
         if ($wrongBundles = $this->findWrongBundleOverrides()) {
@@ -217,8 +217,8 @@ private function displayGeneralText(SymfonyStyle $io, string $filter = null)
 
     private function displayGeneralJson(SymfonyStyle $io, $filter)
     {
-        $types = array('functions', 'filters', 'tests', 'globals');
-        $data = array();
+        $types = ['functions', 'filters', 'tests', 'globals'];
+        $data = [];
         foreach ($types as $type) {
             foreach ($this->twig->{'get'.ucfirst($type)}() as $name => $entity) {
                 if (!$filter || false !== strpos($name, $filter)) {
@@ -245,15 +245,15 @@ private function getLoaderPaths(string $name = null): array
     {
         /** @var FilesystemLoader $loader */
         $loader = $this->twig->getLoader();
-        $loaderPaths = array();
+        $loaderPaths = [];
         $namespaces = $loader->getNamespaces();
         if (null !== $name) {
             $namespace = $this->parseTemplateName($name)[0];
-            $namespaces = array_intersect(array($namespace), $namespaces);
+            $namespaces = array_intersect([$namespace], $namespaces);
         }
 
         foreach ($namespaces as $namespace) {
-            $paths = array_map(array($this, 'getRelativePath'), $loader->getPaths($namespace));
+            $paths = array_map([$this, 'getRelativePath'], $loader->getPaths($namespace));
 
             if (FilesystemLoader::MAIN_NAMESPACE === $namespace) {
                 $namespace = '(None)';
@@ -357,8 +357,8 @@ private function getPrettyMetadata($type, $entity)
 
     private function findWrongBundleOverrides(): array
     {
-        $alternatives = array();
-        $bundleNames = array();
+        $alternatives = [];
+        $bundleNames = [];
 
         if ($this->rootDir && $this->projectDir) {
             $folders = glob($this->rootDir.'/Resources/*/views', GLOB_ONLYDIR);
@@ -391,7 +391,7 @@ private function findWrongBundleOverrides(): array
         }
 
         if ($notFoundBundles = array_diff_key($bundleNames, $this->bundlesMetadata)) {
-            $alternatives = array();
+            $alternatives = [];
             foreach ($notFoundBundles as $notFoundBundle => $path) {
                 $alternatives[$path] = $this->findAlternatives($notFoundBundle, array_keys($this->bundlesMetadata));
             }
@@ -402,7 +402,7 @@ private function findWrongBundleOverrides(): array
 
     private function buildWarningMessages(array $wrongBundles): array
     {
-        $messages = array();
+        $messages = [];
         foreach ($wrongBundles as $path => $alternatives) {
             $message = sprintf('Path "%s" not matching any bundle found', $path);
             if ($alternatives) {
@@ -421,7 +421,7 @@ private function buildWarningMessages(array $wrongBundles): array
         return $messages;
     }
 
-    private function error(SymfonyStyle $io, string $message, array $alternatives = array()): void
+    private function error(SymfonyStyle $io, string $message, array $alternatives = []): void
     {
         if ($alternatives) {
             if (1 === \count($alternatives)) {
@@ -439,7 +439,7 @@ private function findTemplateFiles(string $name): array
     {
         /** @var FilesystemLoader $loader */
         $loader = $this->twig->getLoader();
-        $files = array();
+        $files = [];
         list($namespace, $shortname) = $this->parseTemplateName($name);
 
         foreach ($loader->getPaths($namespace) as $path) {
@@ -470,29 +470,29 @@ private function parseTemplateName(string $name, string $default = FilesystemLoa
             $namespace = substr($name, 1, $pos - 1);
             $shortname = substr($name, $pos + 1);
 
-            return array($namespace, $shortname);
+            return [$namespace, $shortname];
         }
 
-        return array($default, $name);
+        return [$default, $name];
     }
 
     private function buildTableRows(array $loaderPaths): array
     {
-        $rows = array();
+        $rows = [];
         $firstNamespace = true;
         $prevHasSeparator = false;
 
         foreach ($loaderPaths as $namespace => $paths) {
             if (!$firstNamespace && !$prevHasSeparator && \count($paths) > 1) {
-                $rows[] = array('', '');
+                $rows[] = ['', ''];
             }
             $firstNamespace = false;
             foreach ($paths as $path) {
-                $rows[] = array($namespace, $path.\DIRECTORY_SEPARATOR);
+                $rows[] = [$namespace, $path.\DIRECTORY_SEPARATOR];
                 $namespace = '';
             }
             if (\count($paths) > 1) {
-                $rows[] = array('', '');
+                $rows[] = ['', ''];
                 $prevHasSeparator = true;
             } else {
                 $prevHasSeparator = false;
@@ -507,7 +507,7 @@ private function buildTableRows(array $loaderPaths): array
 
     private function findAlternatives(string $name, array $collection): array
     {
-        $alternatives = array();
+        $alternatives = [];
         foreach ($collection as $item) {
             $lev = levenshtein($name, $item);
             if ($lev <= \strlen($name) / 3 || false !== strpos($item, $name)) {
diff --git a/src/Symfony/Bridge/Twig/Extension/CodeExtension.php b/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
index 73d9031b9083..56211fe6ec16 100644
--- a/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
@@ -43,18 +43,18 @@ public function __construct($fileLinkFormat, string $projectDir, string $charset
      */
     public function getFilters()
     {
-        return array(
-            new TwigFilter('abbr_class', array($this, 'abbrClass'), array('is_safe' => array('html'))),
-            new TwigFilter('abbr_method', array($this, 'abbrMethod'), array('is_safe' => array('html'))),
-            new TwigFilter('format_args', array($this, 'formatArgs'), array('is_safe' => array('html'))),
-            new TwigFilter('format_args_as_text', array($this, 'formatArgsAsText')),
-            new TwigFilter('file_excerpt', array($this, 'fileExcerpt'), array('is_safe' => array('html'))),
-            new TwigFilter('format_file', array($this, 'formatFile'), array('is_safe' => array('html'))),
-            new TwigFilter('format_file_from_text', array($this, 'formatFileFromText'), array('is_safe' => array('html'))),
-            new TwigFilter('format_log_message', array($this, 'formatLogMessage'), array('is_safe' => array('html'))),
-            new TwigFilter('file_link', array($this, 'getFileLink')),
-            new TwigFilter('file_relative', array($this, 'getFileRelative')),
-        );
+        return [
+            new TwigFilter('abbr_class', [$this, 'abbrClass'], ['is_safe' => ['html']]),
+            new TwigFilter('abbr_method', [$this, 'abbrMethod'], ['is_safe' => ['html']]),
+            new TwigFilter('format_args', [$this, 'formatArgs'], ['is_safe' => ['html']]),
+            new TwigFilter('format_args_as_text', [$this, 'formatArgsAsText']),
+            new TwigFilter('file_excerpt', [$this, 'fileExcerpt'], ['is_safe' => ['html']]),
+            new TwigFilter('format_file', [$this, 'formatFile'], ['is_safe' => ['html']]),
+            new TwigFilter('format_file_from_text', [$this, 'formatFileFromText'], ['is_safe' => ['html']]),
+            new TwigFilter('format_log_message', [$this, 'formatLogMessage'], ['is_safe' => ['html']]),
+            new TwigFilter('file_link', [$this, 'getFileLink']),
+            new TwigFilter('file_relative', [$this, 'getFileRelative']),
+        ];
     }
 
     public function abbrClass($class)
@@ -88,7 +88,7 @@ public function abbrMethod($method)
      */
     public function formatArgs($args)
     {
-        $result = array();
+        $result = [];
         foreach ($args as $key => $item) {
             if ('object' === $item[0]) {
                 $parts = explode('\\', $item[1]);
@@ -147,7 +147,7 @@ public function fileExcerpt($file, $line, $srcContext = 3)
             }, $code);
             $content = explode('<br />', $code);
 
-            $lines = array();
+            $lines = [];
             if (0 > $srcContext) {
                 $srcContext = \count($content);
             }
@@ -205,7 +205,7 @@ public function formatFile($file, $line, $text = null)
     public function getFileLink($file, $line)
     {
         if ($fmt = $this->fileLinkFormat) {
-            return \is_string($fmt) ? strtr($fmt, array('%f' => $file, '%l' => $line)) : $fmt->format($file, $line);
+            return \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line);
         }
 
         return false;
@@ -235,7 +235,7 @@ public function formatFileFromText($text)
     public function formatLogMessage($message, array $context)
     {
         if ($context && false !== strpos($message, '{')) {
-            $replacements = array();
+            $replacements = [];
             foreach ($context as $key => $val) {
                 if (is_scalar($val)) {
                     $replacements['{'.$key.'}'] = $val;
diff --git a/src/Symfony/Bridge/Twig/Extension/TranslationExtension.php b/src/Symfony/Bridge/Twig/Extension/TranslationExtension.php
index ec5d452cef46..b8a0eb61546a 100644
--- a/src/Symfony/Bridge/Twig/Extension/TranslationExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/TranslationExtension.php
@@ -69,10 +69,10 @@ public function getTranslator()
      */
     public function getFilters()
     {
-        return array(
-            new TwigFilter('trans', array($this, 'trans')),
-            new TwigFilter('transchoice', array($this, 'transchoice'), array('deprecated' => '4.2', 'alternative' => 'trans" with parameter "%count%')),
-        );
+        return [
+            new TwigFilter('trans', [$this, 'trans']),
+            new TwigFilter('transchoice', [$this, 'transchoice'], ['deprecated' => '4.2', 'alternative' => 'trans" with parameter "%count%']),
+        ];
     }
 
     /**
@@ -82,7 +82,7 @@ public function getFilters()
      */
     public function getTokenParsers()
     {
-        return array(
+        return [
             // {% trans %}Symfony is great!{% endtrans %}
             new TransTokenParser(),
 
@@ -93,7 +93,7 @@ public function getTokenParsers()
 
             // {% trans_default_domain "foobar" %}
             new TransDefaultDomainTokenParser(),
-        );
+        ];
     }
 
     /**
@@ -101,7 +101,7 @@ public function getTokenParsers()
      */
     public function getNodeVisitors()
     {
-        return array($this->getTranslationNodeVisitor(), new TranslationDefaultDomainNodeVisitor());
+        return [$this->getTranslationNodeVisitor(), new TranslationDefaultDomainNodeVisitor()];
     }
 
     public function getTranslationNodeVisitor()
@@ -109,7 +109,7 @@ public function getTranslationNodeVisitor()
         return $this->translationNodeVisitor ?: $this->translationNodeVisitor = new TranslationNodeVisitor();
     }
 
-    public function trans($message, array $arguments = array(), $domain = null, $locale = null, $count = null)
+    public function trans($message, array $arguments = [], $domain = null, $locale = null, $count = null)
     {
         if (null !== $count) {
             $arguments['%count%'] = $count;
@@ -124,16 +124,16 @@ public function trans($message, array $arguments = array(), $domain = null, $loc
     /**
      * @deprecated since Symfony 4.2, use the trans() method instead with a %count% parameter
      */
-    public function transchoice($message, $count, array $arguments = array(), $domain = null, $locale = null)
+    public function transchoice($message, $count, array $arguments = [], $domain = null, $locale = null)
     {
         if (null === $this->translator) {
-            return $this->doTrans($message, array_merge(array('%count%' => $count), $arguments), $domain, $locale);
+            return $this->doTrans($message, array_merge(['%count%' => $count], $arguments), $domain, $locale);
         }
         if ($this->translator instanceof TranslatorInterface) {
-            return $this->translator->trans($message, array_merge(array('%count%' => $count), $arguments), $domain, $locale);
+            return $this->translator->trans($message, array_merge(['%count%' => $count], $arguments), $domain, $locale);
         }
 
-        return $this->translator->transChoice($message, $count, array_merge(array('%count%' => $count), $arguments), $domain, $locale);
+        return $this->translator->transChoice($message, $count, array_merge(['%count%' => $count], $arguments), $domain, $locale);
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Tests/Command/DebugCommandTest.php b/src/Symfony/Bridge/Twig/Tests/Command/DebugCommandTest.php
index e648a52d84a7..59c8ed045c8f 100644
--- a/src/Symfony/Bridge/Twig/Tests/Command/DebugCommandTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Command/DebugCommandTest.php
@@ -23,7 +23,7 @@ class DebugCommandTest extends TestCase
     public function testDebugCommand()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array(), array('decorated' => false));
+        $ret = $tester->execute([], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Functions', trim($tester->getDisplay()));
@@ -32,11 +32,11 @@ public function testDebugCommand()
     public function testFilterAndJsonFormatOptions()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('--filter' => 'abs', '--format' => 'json'), array('decorated' => false));
+        $ret = $tester->execute(['--filter' => 'abs', '--format' => 'json'], ['decorated' => false]);
 
-        $expected = array(
-            'filters' => array('abs' => array()),
-        );
+        $expected = [
+            'filters' => ['abs' => []],
+        ];
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertEquals($expected, json_decode($tester->getDisplay(true), true));
@@ -44,19 +44,19 @@ public function testFilterAndJsonFormatOptions()
 
     public function testWarningsWrongBundleOverriding()
     {
-        $bundleMetadata = array(
+        $bundleMetadata = [
             'TwigBundle' => 'vendor/twig-bundle/',
             'WebProfilerBundle' => 'vendor/web-profiler-bundle/',
-        );
+        ];
         $defaultPath = \dirname(__DIR__).\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'templates';
 
-        $tester = $this->createCommandTester(array(), $bundleMetadata, $defaultPath);
-        $ret = $tester->execute(array('--filter' => 'unknown', '--format' => 'json'), array('decorated' => false));
+        $tester = $this->createCommandTester([], $bundleMetadata, $defaultPath);
+        $ret = $tester->execute(['--filter' => 'unknown', '--format' => 'json'], ['decorated' => false]);
 
-        $expected = array('warnings' => array(
+        $expected = ['warnings' => [
             'Path "templates/bundles/UnknownBundle" not matching any bundle found',
             'Path "templates/bundles/WebProfileBundle" not matching any bundle found, did you mean "WebProfilerBundle"?',
-        ));
+        ]];
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertEquals($expected, json_decode($tester->getDisplay(true), true));
@@ -68,21 +68,21 @@ public function testWarningsWrongBundleOverriding()
      */
     public function testDeprecationForWrongBundleOverridingInLegacyPath()
     {
-        $bundleMetadata = array(
+        $bundleMetadata = [
             'TwigBundle' => 'vendor/twig-bundle/',
             'WebProfilerBundle' => 'vendor/web-profiler-bundle/',
-        );
+        ];
         $defaultPath = \dirname(__DIR__).\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'templates';
         $rootDir = \dirname(__DIR__).\DIRECTORY_SEPARATOR.'Fixtures';
 
-        $tester = $this->createCommandTester(array(), $bundleMetadata, $defaultPath, $rootDir);
-        $ret = $tester->execute(array('--filter' => 'unknown', '--format' => 'json'), array('decorated' => false));
+        $tester = $this->createCommandTester([], $bundleMetadata, $defaultPath, $rootDir);
+        $ret = $tester->execute(['--filter' => 'unknown', '--format' => 'json'], ['decorated' => false]);
 
-        $expected = array('warnings' => array(
+        $expected = ['warnings' => [
             'Path "Resources/BarBundle" not matching any bundle found',
             'Path "templates/bundles/UnknownBundle" not matching any bundle found',
             'Path "templates/bundles/WebProfileBundle" not matching any bundle found, did you mean "WebProfilerBundle"?',
-        ));
+        ]];
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertEquals($expected, json_decode($tester->getDisplay(true), true));
@@ -94,7 +94,7 @@ public function testDeprecationForWrongBundleOverridingInLegacyPath()
      */
     public function testMalformedTemplateName()
     {
-        $this->createCommandTester()->execute(array('name' => '@foo'));
+        $this->createCommandTester()->execute(['name' => '@foo']);
     }
 
     /**
@@ -103,7 +103,7 @@ public function testMalformedTemplateName()
     public function testDebugTemplateName(array $input, string $output, array $paths)
     {
         $tester = $this->createCommandTester($paths);
-        $ret = $tester->execute($input, array('decorated' => false));
+        $ret = $tester->execute($input, ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertStringMatchesFormat($output, $tester->getDisplay(true));
@@ -111,14 +111,14 @@ public function testDebugTemplateName(array $input, string $output, array $paths
 
     public function getDebugTemplateNameTestData()
     {
-        $defaultPaths = array(
+        $defaultPaths = [
             'templates/' => null,
             'templates/bundles/TwigBundle/' => 'Twig',
             'vendors/twig-bundle/Resources/views/' => 'Twig',
-        );
+        ];
 
-        yield 'no template paths configured for your application' => array(
-            'input' => array('name' => 'base.html.twig'),
+        yield 'no template paths configured for your application' => [
+            'input' => ['name' => 'base.html.twig'],
             'output' => <<<TXT
 
 Matched File
@@ -140,11 +140,11 @@ public function getDebugTemplateNameTestData()
 
 TXT
             ,
-            'paths' => array('vendors/twig-bundle/Resources/views/' => 'Twig'),
-        );
+            'paths' => ['vendors/twig-bundle/Resources/views/' => 'Twig'],
+        ];
 
-        yield 'no matched template' => array(
-            'input' => array('name' => '@App/foo.html.twig'),
+        yield 'no matched template' => [
+            'input' => ['name' => '@App/foo.html.twig'],
             'output' => <<<TXT
 
 Matched File
@@ -170,10 +170,10 @@ public function getDebugTemplateNameTestData()
 TXT
             ,
             'paths' => $defaultPaths,
-        );
+        ];
 
-        yield 'matched file' => array(
-            'input' => array('name' => 'base.html.twig'),
+        yield 'matched file' => [
+            'input' => ['name' => 'base.html.twig'],
             'output' => <<<TXT
 
 Matched File
@@ -194,10 +194,10 @@ public function getDebugTemplateNameTestData()
 TXT
             ,
             'paths' => $defaultPaths,
-        );
+        ];
 
-        yield 'overridden files' => array(
-            'input' => array('name' => '@Twig/error.html.twig'),
+        yield 'overridden files' => [
+            'input' => ['name' => '@Twig/error.html.twig'],
             'output' => <<<TXT
 
 Matched File
@@ -224,10 +224,10 @@ public function getDebugTemplateNameTestData()
 TXT
             ,
             'paths' => $defaultPaths,
-        );
+        ];
 
-        yield 'template namespace alternative' => array(
-            'input' => array('name' => '@Twg/error.html.twig'),
+        yield 'template namespace alternative' => [
+            'input' => ['name' => '@Twg/error.html.twig'],
             'output' => <<<TXT
 
 Matched File
@@ -247,10 +247,10 @@ public function getDebugTemplateNameTestData()
 TXT
             ,
             'paths' => $defaultPaths,
-        );
+        ];
 
-        yield 'template name alternative' => array(
-            'input' => array('name' => '@Twig/eror.html.twig'),
+        yield 'template name alternative' => [
+            'input' => ['name' => '@Twig/eror.html.twig'],
             'output' => <<<TXT
 
 Matched File
@@ -276,13 +276,13 @@ public function getDebugTemplateNameTestData()
 TXT
             ,
             'paths' => $defaultPaths,
-        );
+        ];
     }
 
-    private function createCommandTester(array $paths = array(), array $bundleMetadata = array(), string $defaultPath = null, string $rootDir = null): CommandTester
+    private function createCommandTester(array $paths = [], array $bundleMetadata = [], string $defaultPath = null, string $rootDir = null): CommandTester
     {
         $projectDir = \dirname(__DIR__).\DIRECTORY_SEPARATOR.'Fixtures';
-        $loader = new FilesystemLoader(array(), $projectDir);
+        $loader = new FilesystemLoader([], $projectDir);
         foreach ($paths as $path => $namespace) {
             if (null === $namespace) {
                 $loader->addPath($path);
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
index 0c6e4e62446c..fd1c319a6310 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
@@ -122,12 +122,12 @@ public function testHelp()
 
     public function testHelpAttr()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-            'help_attr' => array(
+            'help_attr' => [
                 'class' => 'class-test',
-            ),
-        ));
+            ],
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
index 6e1ee0c49c07..bec41597054c 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap4LayoutTest.php
@@ -179,12 +179,12 @@ public function testHelp()
 
     public function testHelpAttr()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-            'help_attr' => array(
+            'help_attr' => [
                 'class' => 'class-test',
-            ),
-        ));
+            ],
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/DumpExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/DumpExtensionTest.php
index 9d8420e64d70..167bcfeed35a 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/DumpExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/DumpExtensionTest.php
@@ -27,11 +27,11 @@ class DumpExtensionTest extends TestCase
     public function testDumpTag($template, $debug, $expectedOutput, $expectedDumped)
     {
         $extension = new DumpExtension(new VarCloner());
-        $twig = new Environment(new ArrayLoader(array('template' => $template)), array(
+        $twig = new Environment(new ArrayLoader(['template' => $template]), [
             'debug' => $debug,
             'cache' => false,
             'optimizations' => 0,
-        ));
+        ]);
         $twig->addExtension($extension);
 
         $dumped = null;
@@ -54,11 +54,11 @@ public function testDumpTag($template, $debug, $expectedOutput, $expectedDumped)
 
     public function getDumpTags()
     {
-        return array(
-            array('A{% dump %}B', true, 'AB', array()),
-            array('A{% set foo="bar"%}B{% dump %}C', true, 'ABC', array('foo' => 'bar')),
-            array('A{% dump %}B', false, 'AB', null),
-        );
+        return [
+            ['A{% dump %}B', true, 'AB', []],
+            ['A{% set foo="bar"%}B{% dump %}C', true, 'ABC', ['foo' => 'bar']],
+            ['A{% dump %}B', false, 'AB', null],
+        ];
     }
 
     /**
@@ -67,11 +67,11 @@ public function getDumpTags()
     public function testDump($context, $args, $expectedOutput, $debug = true)
     {
         $extension = new DumpExtension(new VarCloner());
-        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), ar
10000
ray(
+        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), [
             'debug' => $debug,
             'cache' => false,
             'optimizations' => 0,
-        ));
+        ]);
 
         array_unshift($args, $context);
         array_unshift($args, $twig);
@@ -88,24 +88,24 @@ public function testDump($context, $args, $expectedOutput, $debug = true)
 
     public function getDumpArgs()
     {
-        return array(
-            array(array(), array(), '', false),
-            array(array(), array(), "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \">[]\n</pre><script>Sfdump(\"sf-dump\")</script>\n"),
-            array(
-                array(),
-                array(123, 456),
+        return [
+            [[], [], '', false],
+            [[], [], "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \">[]\n</pre><script>Sfdump(\"sf-dump\")</script>\n"],
+            [
+                [],
+                [123, 456],
                 "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \"><span class=sf-dump-num>123</span>\n</pre><script>Sfdump(\"sf-dump\")</script>\n"
                 ."<pre class=sf-dump id=sf-dump data-indent-pad=\"  \"><span class=sf-dump-num>456</span>\n</pre><script>Sfdump(\"sf-dump\")</script>\n",
-            ),
-            array(
-                array('foo' => 'bar'),
-                array(),
+            ],
+            [
+                ['foo' => 'bar'],
+                [],
                 "<pre class=sf-dump id=sf-dump data-indent-pad=\"  \"><span class=sf-dump-note>array:1</span> [<samp>\n"
                 ."  \"<span class=sf-dump-key>foo</span>\" => \"<span class=sf-dump-str title=\"3 characters\">bar</span>\"\n"
                 ."</samp>]\n"
                 ."</pre><script>Sfdump(\"sf-dump\")</script>\n",
-            ),
-        );
+            ],
+        ];
     }
 
     public function testCustomDumper()
@@ -123,13 +123,13 @@ public function testCustomDumper()
             '</pre><script>Sfdump("%s")</script>'
         );
         $extension = new DumpExtension(new VarCloner(), $dumper);
-        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), array(
+        $twig = new Environment($this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock(), [
             'debug' => true,
             'cache' => false,
             'optimizations' => 0,
-        ));
+        ]);
 
-        $dump = $extension->dump($twig, array(), 'foo');
+        $dump = $extension->dump($twig, [], 'foo');
         $dump = preg_replace('/sf-dump-\d+/', 'sf-dump', $dump);
 
         $this->assertEquals(
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/Fixtures/StubTranslator.php b/src/Symfony/Bridge/Twig/Tests/Extension/Fixtures/StubTranslator.php
index bd9191161a7c..55c0dfa18a1e 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/Fixtures/StubTranslator.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/Fixtures/StubTranslator.php
@@ -15,7 +15,7 @@
 
 class StubTranslator implements TranslatorInterface
 {
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         return '[trans]'.$id.'[/trans]';
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php
index 4a2df0289f8f..330b8e70fa7f 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php
@@ -35,22 +35,22 @@ protected function setUp()
     {
         parent::setUp();
 
-        $loader = new StubFilesystemLoader(array(
+        $loader = new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        ));
+        ]);
 
-        $environment = new Environment($loader, array('strict_variables' => true));
+        $environment = new Environment($loader, ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addGlobal('global', '');
         // the value can be any template that exists
         $environment->addGlobal('dynamic_template_name', 'child_label');
         $environment->addExtension(new FormExtension());
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'form_div_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
     }
@@ -62,7 +62,7 @@ public function testThemeBlockInheritanceUsingUse()
             ->createView()
         ;
 
-        $this->setTheme($view, array('theme_use.html.twig'));
+        $this->setTheme($view, ['theme_use.html.twig']);
 
         $this->assertMatchesXpath(
             $this->renderWidget($view),
@@ -77,7 +77,7 @@ public function testThemeBlockInheritanceUsingExtend()
             ->createView()
         ;
 
-        $this->setTheme($view, array('theme_extends.html.twig'));
+        $this->setTheme($view, ['theme_extends.html.twig']);
 
         $this->assertMatchesXpath(
             $this->renderWidget($view),
@@ -92,7 +92,7 @@ public function testThemeBlockInheritanceUsingDynamicExtend()
             ->createView()
         ;
 
-        $this->renderer->setTheme($view, array('page_dynamic_extends.html.twig'));
+        $this->renderer->setTheme($view, ['page_dynamic_extends.html.twig']);
         $this->assertMatchesXpath(
             $this->renderer->searchAndRenderBlock($view, 'row'),
             '/div/label[text()="child"]'
@@ -101,18 +101,18 @@ public function testThemeBlockInheritanceUsingDynamicExtend()
 
     public function isSelectedChoiceProvider()
     {
-        return array(
-            array(true, '0', '0'),
-            array(true, '1', '1'),
-            array(true, '', ''),
-            array(true, '1.23', '1.23'),
-            array(true, 'foo', 'foo'),
-            array(true, 'foo10', 'foo10'),
-            array(true, 'foo', array(1, 'foo', 'foo10')),
-
-            array(false, 10, array(1, 'foo', 'foo10')),
-            array(false, 0, array(1, 'foo', 'foo10')),
-        );
+        return [
+            [true, '0', '0'],
+            [true, '1', '1'],
+            [true, '', ''],
+            [true, '1.23', '1.23'],
+            [true, 'foo', 'foo'],
+            [true, 'foo10', 'foo10'],
+            [true, 'foo', [1, 'foo', 'foo10']],
+
+            [false, 10, [1, 'foo', 'foo10']],
+            [false, 0, [1, 'foo', 'foo10']],
+        ];
     }
 
     /**
@@ -127,10 +127,10 @@ public function testIsChoiceSelected($expected, $choice, $value)
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -139,10 +139,10 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -151,10 +151,10 @@ public function testStartTagHasActionAttributeWhenActionIsZero()
 
     public function isRootFormProvider()
     {
-        return array(
-            array(true, new FormView()),
-            array(false, new FormView(new FormView())),
-        );
+        return [
+            [true, new FormView()],
+            [false, new FormView(new FormView())],
+        ];
     }
 
     /**
@@ -167,18 +167,18 @@ public function testIsRootForm($expected, FormView $formView)
 
     public function testMoneyWidgetInIso()
     {
-        $environment = new Environment(new StubFilesystemLoader(array(
+        $environment = new Environment(new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        )), array('strict_variables' => true));
+        ]), ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addExtension(new FormExtension());
         $environment->setCharset('ISO-8859-1');
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'form_div_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
 
@@ -192,12 +192,12 @@ public function testMoneyWidgetInIso()
 
     public function testHelpAttr()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-            'help_attr' => array(
+            'help_attr' => [
                 'class' => 'class-test',
-            ),
-        ));
+            ],
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
@@ -210,15 +210,15 @@ public function testHelpAttr()
         );
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         if (null !== $label) {
-            $vars += array('label' => $label);
+            $vars += ['label' => $label];
         }
 
         return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
@@ -234,27 +234,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
     }
@@ -266,15 +266,15 @@ protected function setTheme(FormView $view, array $themes, $useDefaultThemes = t
 
     public static function themeBlockInheritanceProvider()
     {
-        return array(
-            array(array('theme.html.twig')),
-        );
+        return [
+            [['theme.html.twig']],
+        ];
     }
 
     public static function themeInheritanceProvider()
     {
-        return array(
-            array(array('parent_label.html.twig'), array('child_label.html.twig')),
-        );
+        return [
+            [['parent_label.html.twig'], ['child_label.html.twig']],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php
index ec00764a7642..0b712562a98c 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php
@@ -34,30 +34,30 @@ protected function setUp()
     {
         parent::setUp();
 
-        $loader = new StubFilesystemLoader(array(
+        $loader = new StubFilesystemLoader([
             __DIR__.'/../../Resources/views/Form',
             __DIR__.'/Fixtures/templates/form',
-        ));
+        ]);
 
-        $environment = new Environment($loader, array('strict_variables' => true));
+        $environment = new Environment($loader, ['strict_variables' => true]);
         $environment->addExtension(new TranslationExtension(new StubTranslator()));
         $environment->addGlobal('global', '');
         $environment->addExtension(new FormExtension());
 
-        $rendererEngine = new TwigRendererEngine(array(
+        $rendererEngine = new TwigRendererEngine([
             'form_table_layout.html.twig',
             'custom_widgets.html.twig',
-        ), $environment);
+        ], $environment);
         $this->renderer = new FormRenderer($rendererEngine, $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock());
         $this->registerTwigRuntimeLoader($environment, $this->renderer);
     }
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -66,10 +66,10 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -78,12 +78,12 @@ public function testStartTagHasActionAttributeWhenActionIsZero()
 
     public function testHelpAttr()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-            'help_attr' => array(
+            'help_attr' => [
                 'class' => 'class-test',
-            ),
-        ));
+            ],
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
@@ -96,15 +96,15 @@ public function testHelpAttr()
         );
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form', $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         if (null !== $label) {
-            $vars += array('label' => $label);
+            $vars += ['label' => $label];
         }
 
         return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
@@ -120,27 +120,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
     }
diff --git a/src/Symfony/Bridge/Twig/Tests/Translation/TwigExtractorTest.php b/src/Symfony/Bridge/Twig/Tests/Translation/TwigExtractorTest.php
index fca5f4d4a9d3..1f5c1955c7eb 100644
--- a/src/Symfony/Bridge/Twig/Tests/Translation/TwigExtractorTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Translation/TwigExtractorTest.php
@@ -28,12 +28,12 @@ class TwigExtractorTest extends TestCase
     public function testExtract($template, $messages)
     {
         $loader = $this->getMockBuilder('Twig\Loader\LoaderInterface')->getMock();
-        $twig = new Environment($loader, array(
+        $twig = new Environment($loader, [
             'strict_variables' => true,
             'debug' => true,
             'cache' => false,
             'autoescape' => false,
-        ));
+        ]);
         $twig->addExtension(new TranslationExtension($this->getMockBuilder(TranslatorInterface::class)->getMock()));
 
         $extractor = new TwigExtractor($twig);
@@ -61,23 +61,23 @@ public function testLegacyExtract($template, $messages)
 
     public function getExtractData()
     {
-        return array(
-            array('{{ "new key" | trans() }}', array('new key' => 'messages')),
-            array('{{ "new key" | trans() | upper }}', array('new key' => 'messages')),
-            array('{{ "new key" | trans({}, "domain") }}', array('new key' => 'domain')),
-            array('{% trans %}new key{% endtrans %}', array('new key' => 'messages')),
-            array('{% trans %}  new key  {% endtrans %}', array('new key' => 'messages')),
-            array('{% trans from "domain" %}new key{% endtrans %}', array('new key' => 'domain')),
-            array('{% set foo = "new key" | trans %}', array('new key' => 'messages')),
-            array('{{ 1 ? "new key" | trans : "another key" | trans }}', array('new key' => 'messages', 'another key' => 'messages')),
+        return [
+            ['{{ "new key" | trans() }}', ['new key' => 'messages']],
+            ['{{ "new key" | trans() | upper }}', ['new key' => 'messages']],
+            ['{{ "new key" | trans({}, "domain") }}', ['new key' => 'domain']],
+            ['{% trans %}new key{% endtrans %}', ['new key' => 'messages']],
+            ['{% trans %}  new key  {% endtrans %}', ['new key' => 'messages']],
+            ['{% trans from "domain" %}new key{% endtrans %}', ['new key' => 'domain']],
+            ['{% set foo = "new key" | trans %}', ['new key' => 'messages']],
+            ['{{ 1 ? "new key" | trans : "another key" | trans }}', ['new key' => 'messages', 'another key' => 'messages']],
 
             // make sure 'trans_default_domain' tag is supported
-            array('{% trans_default_domain "domain" %}{{ "new key"|trans }}', array('new key' => 'domain')),
-            array('{% trans_default_domain "domain" %}{% trans %}new key{% endtrans %}', array('new key' => 'domain')),
+            ['{% trans_default_domain "domain" %}{{ "new key"|trans }}', ['new key' => 'domain']],
+            ['{% trans_default_domain "domain" %}{% trans %}new key{% endtrans %}', ['new key' => 'domain']],
 
             // make sure this works with twig's named arguments
-            array('{{ "new key" | trans(domain="domain") }}', array('new key' => 'domain')),
-        );
+            ['{{ "new key" | trans(domain="domain") }}', ['new key' => 'domain']],
+        ];
     }
 
     /**
@@ -85,17 +85,17 @@ public function getExtractData()
      */
     public function getLegacyExtractData()
     {
-        return array(
-            array('{{ "new key" | transchoice(1) }}', array('new key' => 'messages')),
-            array('{{ "new key" | transchoice(1) | upper }}', array('new key' => 'messages')),
-            array('{{ "new key" | transchoice(1, {}, "domain") }}', array('new key' => 'domain')),
+        return [
+            ['{{ "new key" | transchoice(1) }}', ['new key' => 'messages']],
+            ['{{ "new key" | transchoice(1) | upper }}', ['new key' => 'messages']],
+            ['{{ "new key" | transchoice(1, {}, "domain") }}', ['new key' => 'domain']],
 
             // make sure 'trans_default_domain' tag is supported
-            array('{% trans_default_domain "domain" %}{{ "new key"|transchoice }}', array('new key' => 'domain')),
+            ['{% trans_default_domain "domain" %}{{ "new key"|transchoice }}', ['new key' => 'domain']],
 
             // make sure this works with twig's named arguments
-            array('{{ "new key" | transchoice(domain="domain", count=1) }}', array('new key' => 'domain')),
-        );
+            ['{{ "new key" | transchoice(domain="domain", count=1) }}', ['new key' => 'domain']],
+        ];
     }
 
     /**
@@ -128,11 +128,11 @@ public function testExtractSyntaxError($resources)
      */
     public function resourcesWithSyntaxErrorsProvider()
     {
-        return array(
-            array(__DIR__.'/../Fixtures'),
-            array(__DIR__.'/../Fixtures/extractor/syntax_error.twig'),
-            array(new \SplFileInfo(__DIR__.'/../Fixtures/extractor/syntax_error.twig')),
-        );
+        return [
+            [__DIR__.'/../Fixtures'],
+            [__DIR__.'/../Fixtures/extractor/syntax_error.twig'],
+            [new \SplFileInfo(__DIR__.'/../Fixtures/extractor/syntax_error.twig')],
+        ];
     }
 
     /**
@@ -140,13 +140,13 @@ public function resourcesWithSyntaxErrorsProvider()
      */
     public function testExtractWithFiles($resource)
     {
-        $loader = new ArrayLoader(array());
-        $twig = new Environment($loader, array(
+        $loader = new ArrayLoader([]);
+        $twig = new Environment($loader, [
             'strict_variables' => true,
             'debug' => true,
             'cache' => false,
             'autoescape' => false,
-        ));
+        ]);
         $twig->addExtension(new TranslationExtension($this->getMockBuilder(TranslatorInterface::class)->getMock()));
 
         $extractor = new TwigExtractor($twig);
@@ -164,12 +164,12 @@ public function resourceProvider()
     {
         $directory = __DIR__.'/../Fixtures/extractor/';
 
-        return array(
-            array($directory.'with_translations.html.twig'),
-            array(array($directory.'with_translations.html.twig')),
-            array(array(new \SplFileInfo($directory.'with_translations.html.twig'))),
-            array(new \ArrayObject(array($directory.'with_translations.html.twig'))),
-            array(new \ArrayObject(array(new \SplFileInfo($directory.'with_translations.html.twig')))),
-        );
+        return [
+            [$directory.'with_translations.html.twig'],
+            [[$directory.'with_translations.html.twig']],
+            [[new \SplFileInfo($directory.'with_translations.html.twig')]],
+            [new \ArrayObject([$directory.'with_translations.html.twig'])],
+            [new \ArrayObject([new \SplFileInfo($directory.'with_translations.html.twig')])],
+        ];
     }
 }
diff --git a/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php b/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
index 84e13f1efb1a..08b44b27b80b 100644
--- a/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
+++ b/src/Symfony/Bridge/Twig/TokenParser/TransChoiceTokenParser.php
@@ -42,7 +42,7 @@ public function parse(Token $token)
 
         @trigger_error(sprintf('The "transchoice" tag is deprecated since Symfony 4.2, use the "trans" one instead with a "%%count%%" parameter in %s line %d.', $stream->getSourceContext()->getName(), $lineno), E_USER_DEPRECATED);
 
-        $vars = new ArrayExpression(array(), $lineno);
+        $vars = new ArrayExpression([], $lineno);
 
         $count = $this->parser->getExpressionParser()->parseExpression();
 
@@ -69,7 +69,7 @@ public function parse(Token $token)
 
         $stream->expect(Token::BLOCK_END_TYPE);
 
-        $body = $this->parser->subparse(array($this, 'decideTransChoiceFork'), true);
+        $body = $this->parser->subparse([$this, 'decideTransChoiceFork'], true);
 
         if (!$body instanceof TextNode && !$body instanceof AbstractExpression) {
             throw new SyntaxError('A message inside a transchoice tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext());
@@ -82,7 +82,7 @@ public function parse(Token $token)
 
     public function decideTransChoiceFork($token)
     {
-        return $token->test(array('endtranschoice'));
+        return $token->test(['endtranschoice']);
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php b/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
index 3a485383ec10..023e3dbf4343 100644
--- a/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
+++ b/src/Symfony/Bridge/Twig/TokenParser/TransTokenParser.php
@@ -40,7 +40,7 @@ public function parse(Token $token)
         $stream = $this->parser->getStream();
 
         $count = null;
-        $vars = new ArrayExpression(array(), $lineno);
+        $vars = new ArrayExpression([], $lineno);
         $domain = null;
         $locale = null;
         if (!$stream->test(Token::BLOCK_END_TYPE)) {
@@ -73,7 +73,7 @@ public function parse(Token $token)
 
         // {% trans %}message{% endtrans %}
         $stream->expect(Token::BLOCK_END_TYPE);
-        $body = $this->parser->subparse(array($this, 'decideTransFork'), true);
+        $body = $this->parser->subparse([$this, 'decideTransFork'], true);
 
         if (!$body instanceof TextNode && !$body instanceof AbstractExpression) {
             throw new SyntaxError('A message inside a trans tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext());
@@ -86,7 +86,7 @@ public function parse(Token $token)
 
     public function decideTransFork($token)
     {
-        return $token->test(array('endtrans'));
+        return $token->test(['endtrans']);
     }
 
     /**
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
index d781f2a7e7cc..3c5b15fb7e59 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/AboutCommand.php
@@ -61,44 +61,44 @@ protected function execute(InputInterface $input, OutputInterface $output)
         /** @var KernelInterface $kernel */
         $kernel = $this->getApplication()->getKernel();
 
-        $rows = array(
-            array('<info>Symfony</>'),
+        $rows = [
+            ['<info>Symfony</>'],
             new TableSeparator(),
-            array('Version', Kernel::VERSION),
-            array('End of maintenance', Kernel::END_OF_MAINTENANCE.(self::isExpired(Kernel::END_OF_MAINTENANCE) ? ' <error>Expired</>' : '')),
-            array('End of life', Kernel::END_OF_LIFE.(self::isExpired(Kernel::END_OF_LIFE) ? ' <error>Expired</>' : '')),
+            ['Version', Kernel::VERSION],
+            ['End of maintenance', Kernel::END_OF_MAINTENANCE.(self::isExpired(Kernel::END_OF_MAINTENANCE) ? ' <error>Expired</>' : '')],
+            ['End of life', Kernel::END_OF_LIFE.(self::isExpired(Kernel::END_OF_LIFE) ? ' <error>Expired</>' : '')],
             new TableSeparator(),
-            array('<info>Kernel</>'),
+            ['<info>Kernel</>'],
             new TableSeparator(),
-            array('Type', \get_class($kernel)),
-            array('Environment', $kernel->getEnvironment()),
-            array('Debug', $kernel->isDebug() ? 'true' : 'false'),
-            array('Charset', $kernel->getCharset()),
-            array('Cache directory', self::formatPath($kernel->getCacheDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getCacheDir()).'</>)'),
-            array('Log directory', self::formatPath($kernel->getLogDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getLogDir()).'</>)'),
+            ['Type', \get_class($kernel)],
+            ['Environment', $kernel->getEnvironment()],
+            ['Debug', $kernel->isDebug() ? 'true' : 'false'],
+            ['Charset', $kernel->getCharset()],
+            ['Cache directory', self::formatPath($kernel->getCacheDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getCacheDir()).'</>)'],
+            ['Log directory', self::formatPath($kernel->getLogDir(), $kernel->getProjectDir()).' (<comment>'.self::formatFileSize($kernel->getLogDir()).'</>)'],
             new TableSeparator(),
-            array('<info>PHP</>'),
+            ['<info>PHP</>'],
             new TableSeparator(),
-            array('Version', PHP_VERSION),
-            array('Architecture', (PHP_INT_SIZE * 8).' bits'),
-            array('Intl locale', class_exists('Locale', false) && \Locale::getDefault() ? \Locale::getDefault() : 'n/a'),
-            array('Timezone', date_default_timezone_get().' (<comment>'.(new \DateTime())->format(\DateTime::W3C).'</>)'),
-            array('OPcache', \extension_loaded('Zend OPcache') && filter_var(ini_get('opcache.enable'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'),
-            array('APCu', \extension_loaded('apcu') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'),
-            array('Xdebug', \extension_loaded('xdebug') ? 'true' : 'false'),
-        );
+            ['Version', PHP_VERSION],
+            ['Architecture', (PHP_INT_SIZE * 8).' bits'],
+            ['Intl locale', class_exists('Locale', false) && \Locale::getDefault() ? \Locale::getDefault() : 'n/a'],
+            ['Timezone', date_default_timezone_get().' (<comment>'.(new \DateTime())->format(\DateTime::W3C).'</>)'],
+            ['OPcache', \extension_loaded('Zend OPcache') && filter_var(ini_get('opcache.enable'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'],
+            ['APCu', \extension_loaded('apcu') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? 'true' : 'false'],
+            ['Xdebug', \extension_loaded('xdebug') ? 'true' : 'false'],
+        ];
 
         if ($dotenv = self::getDotenvVars()) {
-            $rows = array_merge($rows, array(
+            $rows = array_merge($rows, [
                 new TableSeparator(),
-                array('<info>Environment (.env)</>'),
+                ['<info>Environment (.env)</>'],
                 new TableSeparator(),
-            ), array_map(function ($value, $name) {
-                return array($name, $value);
+            ], array_map(function ($value, $name) {
+                return [$name, $value];
             }, $dotenv, array_keys($dotenv)));
         }
 
-        $io->table(array(), $rows);
+        $io->table([], $rows);
     }
 
     private static function formatPath(string $path, string $baseDir): string
@@ -129,7 +129,7 @@ private static function isExpired(string $date): bool
 
     private static function getDotenvVars(): array
     {
-        $vars = array();
+        $vars = [];
         foreach (explode(',', getenv('SYMFONY_DOTENV_VARS')) as $name) {
             if ('' !== $name && false !== $value = getenv($name)) {
                 $vars[$name] = $value;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
index 575d109dd666..9b5193d63bce 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
@@ -48,7 +48,7 @@ class ContainerDebugCommand extends Command
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('name', InputArgument::OPTIONAL, 'A service name (foo)'),
                 new InputOption('show-private', null, InputOption::VALUE_NONE, 'Used to show public *and* private services (deprecated)'),
                 new InputOption('show-arguments', null, InputOption::VALUE_NONE, 'Used to show arguments in services'),
@@ -60,7 +60,7 @@ protected function configure()
                 new InputOption('types', null, InputOption::VALUE_NONE, 'Displays types (classes/interfaces) available in the container'),
                 new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
                 new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw description'),
-            ))
+            ])
             ->setDescription('Displays current services for an application')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays all configured <comment>public</comment> services:
@@ -117,26 +117,26 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $object = $this->getContainerBuilder();
 
         if ($input->getOption('types')) {
-            $options = array();
-            $options['filter'] = array($this, 'filterToServiceTypes');
+            $options = [];
+            $options['filter'] = [$this, 'filterToServiceTypes'];
         } elseif ($input->getOption('parameters')) {
-            $parameters = array();
+            $parameters = [];
             foreach ($object->getParameterBag()->all() as $k => $v) {
                 $parameters[$k] = $object->resolveEnvPlaceholders($v);
             }
             $object = new ParameterBag($parameters);
-            $options = array();
+            $options = [];
         } elseif ($parameter = $input->getOption('parameter')) {
-            $options = array('parameter' => $parameter);
+            $options = ['parameter' => $parameter];
         } elseif ($input->getOption('tags')) {
-            $options = array('group_by' => 'tags');
+            $options = ['group_by' => 'tags'];
         } elseif ($tag = $input->getOption('tag')) {
-            $options = array('tag' => $tag);
+            $options = ['tag' => $tag];
         } elseif ($name = $input->getArgument('name')) {
             $name = $this->findProperServiceName($input, $errorIo, $object, $name, $input->getOption('show-hidden'));
-            $options = array('id' => $name);
+            $options = ['id' => $name];
         } else {
-            $options = array();
+            $options = [];
         }
 
         $helper = new DescriptorHelper();
@@ -150,7 +150,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $helper->describe($io, $object, $options);
         } catch (ServiceNotFoundException $e) {
             if ('' !== $e->getId() && '@' === $e->getId()[0]) {
-                throw new ServiceNotFoundException($e->getId(), $e->getSourceId(), null, array(substr($e->getId(), 1)));
+                throw new ServiceNotFoundException($e->getId(), $e->getSourceId(), null, [substr($e->getId(), 1)]);
             }
 
             throw $e;
@@ -174,7 +174,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
      */
     protected function validateInput(InputInterface $input)
     {
-        $options = array('tags', 'tag', 'parameters', 'parameter');
+        $options = ['tags', 'tag', 'parameters', 'parameter'];
 
         $optionsCount = 0;
         foreach ($options as $option) {
@@ -209,7 +209,7 @@ protected function getContainerBuilder()
         if (!$kernel->isDebug() || !(new ConfigCache($kernel->getContainer()->getParameter('debug.container.dump'), true))->isFresh()) {
             $buildContainer = \Closure::bind(function () { return $this->buildContainer(); }, $kernel, \get_class($kernel));
             $container = $buildContainer();
-            $container->getCompilerPassConfig()->setRemovingPasses(array());
+            $container->getCompilerPassConfig()->setRemovingPasses([]);
             $container->compile();
         } else {
             (new XmlFileLoader($container = new ContainerBuilder(), new FileLocator()))->load($kernel->getContainer()->getParameter('debug.container.dump'));
@@ -239,7 +239,7 @@ private function findProperServiceName(InputInterface $input, SymfonyStyle $io,
     private function findServiceIdsContaining(ContainerBuilder $builder, string $name, bool $showHidden)
     {
         $serviceIds = $builder->getServiceIds();
-        $foundServiceIds = $foundServiceIdsIgnoringBackslashes = array();
+        $foundServiceIds = $foundServiceIdsIgnoringBackslashes = [];
         foreach ($serviceIds as $serviceId) {
             if (!$showHidden && 0 === strpos($serviceId, '.')) {
                 continue;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
index 1c832c04d30f..a1097592ee78 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutowiringCommand.php
@@ -35,10 +35,10 @@ class DebugAutowiringCommand extends ContainerDebugCommand
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('search', InputArgument::OPTIONAL, 'A search filter'),
                 new InputOption('all', null, InputOption::VALUE_NONE, 'Show also services that are not aliased'),
-            ))
+            ])
             ->setDescription('Lists classes/interfaces you can use for autowiring')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command displays the classes and interfaces that
@@ -65,7 +65,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $builder = $this->getContainerBuilder();
         $serviceIds = $builder->getServiceIds();
-        $serviceIds = array_filter($serviceIds, array($this, 'filterToServiceTypes'));
+        $serviceIds = array_filter($serviceIds, [$this, 'filterToServiceTypes']);
 
         if ($search = $input->getArgument('search')) {
             $serviceIds = array_filter($serviceIds, function ($serviceId) use ($search) {
@@ -86,11 +86,11 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if ($search) {
             $io->text(sprintf('(only showing classes/interfaces matching <comment>%s</comment>)', $search));
         }
-        $hasAlias = array();
+        $hasAlias = [];
         $all = $input->getOption('all');
         $previousId = '-';
         foreach ($serviceIds as $serviceId) {
-            $text = array();
+            $text = [];
             if (0 !== strpos($serviceId, $previousId)) {
                 $text[] = '';
                 if ('' !== $description = Descriptor::getClassDescription($serviceId, $serviceId)) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
index 92c1c07628a3..0b284e61c09d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
@@ -74,14 +74,14 @@ public function __construct($translator, TranslationReaderInterface $reader, Ext
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('locale', InputArgument::REQUIRED, 'The locale'),
                 new InputArgument('bundle', InputArgument::OPTIONAL, 'The bundle name or directory where to load the messages'),
                 new InputOption('domain', null, InputOption::VALUE_OPTIONAL, 'The messages domain'),
                 new InputOption('only-missing', null, InputOption::VALUE_NONE, 'Displays only missing messages'),
                 new InputOption('only-unused', null, InputOption::VALUE_NONE, 'Displays only unused messages'),
                 new InputOption('all', null, InputOption::VALUE_NONE, 'Load messages from all registered bundles'),
-            ))
+            ])
             ->setDescription('Displays translation messages information')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command helps finding unused or missing translation
@@ -131,7 +131,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $rootDir = $kernel->getContainer()->getParameter('kernel.root_dir');
 
         // Define Root Paths
-        $transPaths = array();
+        $transPaths = [];
         if (is_dir($dir = $rootDir.'/Resources/translations')) {
             if ($dir !== $this->defaultTransPath) {
                 $notice = sprintf('Storing translations in the "%s" directory is deprecated since Symfony 4.2, ', $dir);
@@ -142,7 +142,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if ($this->defaultTransPath) {
             $transPaths[] = $this->defaultTransPath;
         }
-        $viewsPaths = array();
+        $viewsPaths = [];
         if (is_dir($dir = $rootDir.'/Resources/views')) {
             if ($dir !== $this->defaultViewsPath) {
                 $notice = sprintf('Storing templates in the "%s" directory is deprecated since Symfony 4.2, ', $dir);
@@ -158,7 +158,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if (null !== $input->getArgument('bundle')) {
             try {
                 $bundle = $kernel->getBundle($input->getArgument('bundle'));
-                $transPaths = array($bundle->getPath().'/Resources/translations');
+                $transPaths = [$bundle->getPath().'/Resources/translations'];
                 if ($this->defaultTransPath) {
                     $transPaths[] = $this->defaultTransPath;
                 }
@@ -167,7 +167,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                     $notice = sprintf('Storing translations files for "%s" in the "%s" directory is deprecated since Symfony 4.2, ', $dir, $bundle->getName());
                     @trigger_error($notice.($this->defaultTransPath ? sprintf('use the "%s" directory instead.', $this->defaultTransPath) : 'configure and use "framework.translator.default_path" instead.'), E_USER_DEPRECATED);
                 }
-                $viewsPaths = array($bundle->getPath().'/Resources/views');
+                $viewsPaths = [$bundle->getPath().'/Resources/views'];
                 if ($this->defaultViewsPath) {
                     $viewsPaths[] = $this->defaultViewsPath;
                 }
@@ -180,7 +180,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 // such a bundle does not exist, so treat the argument as path
                 $path = $input->getArgument('bundle');
 
-                $transPaths = array($path.'/translations');
+                $transPaths = [$path.'/translations'];
                 if (is_dir($dir = $path.'/Resources/translations')) {
                     if ($dir !== $this->defaultTransPath) {
                         @trigger_error(sprintf('Storing translations in the "%s" directory is deprecated since Symfony 4.2, use the "%s" directory instead.', $dir, $path.'/translations'), E_USER_DEPRECATED);
@@ -188,7 +188,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                     $transPaths[] = $dir;
                 }
 
-                $viewsPaths = array($path.'/templates');
+                $viewsPaths = [$path.'/templates'];
                 if (is_dir($dir = $path.'/Resources/views')) {
                     if ($dir !== $this->defaultViewsPath) {
                         @trigger_error(sprintf('Storing templates in the "%s" directory is deprecated since Symfony 4.2, use the "%s" directory instead.', $dir, $path.'/templates'), E_USER_DEPRECATED);
@@ -227,7 +227,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $mergeOperation = new MergeOperation($extractedCatalogue, $currentCatalogue);
         $allMessages = $mergeOperation->getResult()->all($domain);
         if (null !== $domain) {
-            $allMessages = array($domain => $allMessages);
+            $allMessages = [$domain => $allMessages];
         }
 
         // No defined or extracted messages
@@ -247,16 +247,16 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $fallbackCatalogues = $this->loadFallbackCatalogues($locale, $transPaths);
 
         // Display header line
-        $headers = array('State', 'Domain', 'Id', sprintf('Message Preview (%s)', $locale));
+        $headers = ['State', 'Domain', 'Id', sprintf('Message Preview (%s)', $locale)];
         foreach ($fallbackCatalogues as $fallbackCatalogue) {
             $headers[] = sprintf('Fallback Message Preview (%s)', $fallbackCatalogue->getLocale());
         }
-        $rows = array();
+        $rows = [];
         // Iterate all message ids and determine their state
         foreach ($allMessages as $domain => $messages) {
             foreach (array_keys($messages) as $messageId) {
                 $value = $currentCatalogue->get($messageId, $domain);
-                $states = array();
+                $states = [];
 
                 if ($extractedCatalogue->defines($messageId, $domain)) {
                     if (!$currentCatalogue->defines($messageId, $domain)) {
@@ -279,7 +279,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                     }
                 }
 
-                $row = array($this->formatStates($states), $domain, $this->formatId($messageId), $this->sanitizeString($value));
+                $row = [$this->formatStates($states), $domain, $this->formatId($messageId), $this->sanitizeString($value)];
                 foreach ($fallbackCatalogues as $fallbackCatalogue) {
                     $row[] = $this->sanitizeString($fallbackCatalogue->get($messageId, $domain));
                 }
@@ -310,7 +310,7 @@ private function formatState($state): string
 
     private function formatStates(array $states): string
     {
-        $result = array();
+        $result = [];
         foreach ($states as $state) {
             $result[] = $this->formatState($state);
         }
@@ -367,7 +367,7 @@ private function loadCurrentMessages(string $locale, array $transPaths): Message
      */
     private function loadFallbackCatalogues(string $locale, array $transPaths): array
     {
-        $fallbackCatalogues = array();
+        $fallbackCatalogues = [];
         if ($this->translator instanceof Translator || $this->translator instanceof DataCollectorTranslator || $this->translator instanceof LoggingTranslator) {
             foreach ($this->translator->getFallbackLocales() as $fallbackLocale) {
                 if ($fallbackLocale === $locale) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
index 6e009173d75a..43c71c9ec81f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
@@ -63,7 +63,7 @@ public function __construct(TranslationWriterInterface $writer, TranslationReade
     protected function configure()
     {
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('locale', InputArgument::REQUIRED, 'The locale'),
                 new InputArgument('bundle', InputArgument::OPTIONAL, 'The bundle name or directory where to load the messages'),
                 new InputOption('prefix', null, InputOption::VALUE_OPTIONAL, 'Override the default prefix', '__'),
@@ -73,7 +73,7 @@ protected function configure()
                 new InputOption('no-backup', null, InputOption::VALUE_NONE, 'Should backup be disabled'),
                 new InputOption('clean', null, InputOption::VALUE_NONE, 'Should clean not found messages'),
                 new InputOption('domain', null, InputOption::VALUE_OPTIONAL, 'Specify the domain to update'),
-            ))
+            ])
             ->setDescription('Updates the translation file')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command extracts translation strings from templates
@@ -112,7 +112,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         // check format
         $supportedFormats = $this->writer->getFormats();
         if (!\in_array($input->getOption('output-format'), $supportedFormats, true)) {
-            $errorIo->error(array('Wrong output format', 'Supported formats are: '.implode(', ', $supportedFormats).'.'));
+            $errorIo->error(['Wrong output format', 'Supported formats are: '.implode(', ', $supportedFormats).'.']);
 
             return 1;
         }
@@ -121,7 +121,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $rootDir = $kernel->getContainer()->getParameter('kernel.root_dir');
 
         // Define Root Paths
-        $transPaths = array();
+        $transPaths = [];
         if (is_dir($dir = $rootDir.'/Resources/translations')) {
             if ($dir !== $this->defaultTransPath) {
                 $notice = sprintf('Storing translations in the "%s" directory is deprecated since Symfony 4.2, ', $dir);
@@ -132,7 +132,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if ($this->defaultTransPath) {
             $transPaths[] = $this->defaultTransPath;
         }
-        $viewsPaths = array();
+        $viewsPaths = [];
         if (is_dir($dir = $rootDir.'/Resources/views')) {
             if ($dir !== $this->defaultViewsPath) {
                 $notice = sprintf('Storing templates in the "%s" directory is deprecated since Symfony 4.2, ', $dir);
@@ -149,7 +149,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if (null !== $input->getArgument('bundle')) {
             try {
                 $foundBundle = $kernel->getBundle($input->getArgument('bundle'));
-                $transPaths = array($foundBundle->getPath().'/Resources/translations');
+                $transPaths = [$foundBundle->getPath().'/Resources/translations'];
                 if ($this->defaultTransPath) {
                     $transPaths[] = $this->defaultTransPath;
                 }
@@ -158,7 +158,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                     $notice = sprintf('Storing translations files for "%s" in the "%s" directory is deprecated since Symfony 4.2, ', $foundBundle->getName(), $dir);
                     @trigger_error($notice.($this->defaultTransPath ? sprintf('use the "%s" directory instead.', $this->defaultTransPath) : 'configure and use "framework.translator.default_path" instead.'), E_USER_DEPRECATED);
                 }
-                $viewsPaths = array($foundBundle->getPath().'/Resources/views');
+                $viewsPaths = [$foundBundle->getPath().'/Resources/views'];
                 if ($this->defaultViewsPath) {
                     $viewsPaths[] = $this->defaultViewsPath;
                 }
@@ -172,7 +172,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 // such a bundle does not exist, so treat the argument as path
                 $path = $input->getArgument('bundle');
 
-                $transPaths = array($path.'/translations');
+                $transPaths = [$path.'/translations'];
                 if (is_dir($dir = $path.'/Resources/translations')) {
                     if ($dir !== $this->defaultTransPath) {
                         @trigger_error(sprintf('Storing translations in the "%s" directory is deprecated since Symfony 4.2, use the "%s" directory instead.', $dir, $path.'/translations'), E_USER_DEPRECATED);
@@ -180,7 +180,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                     $transPaths[] = $dir;
                 }
 
-                $viewsPaths = array($path.'/templates');
+                $viewsPaths = [$path.'/templates'];
                 if (is_dir($dir = $path.'/Resources/views')) {
                     if ($dir !== $this->defaultViewsPath) {
                         @trigger_error(sprintf('Storing templates in the "%s" directory is deprecated since Symfony 4.2, use the "%s" directory instead.', $dir, $path.'/templates'), E_USER_DEPRECATED);
@@ -287,7 +287,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 $bundleTransPath = end($transPaths);
             }
 
-            $this->writer->write($operation->getResult(), $input->getOption('output-format'), array('path' => $bundleTransPath, 'default_locale' => $this->defaultLocale));
+            $this->writer->write($operation->getResult(), $input->getOption('output-format'), ['path' => $bundleTransPath, 'default_locale' => $this->defaultLocale]);
 
             if (true === $input->getOption('dump-messages')) {
                 $resultMessage .= ' and translation files were updated';
diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
index 3938a5dc11fa..79566a1ad97a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php
@@ -36,24 +36,24 @@ class TextDescriptor extends Descriptor
     /**
      * {@inheritdoc}
      */
-    protected function describeRouteCollection(RouteCollection $routes, array $options = array())
+    protected function describeRouteCollection(RouteCollection $routes, array $options = [])
     {
         $showControllers = isset($options['show_controllers']) && $options['show_controllers'];
 
-        $tableHeaders = array('Name', 'Method', 'Scheme', 'Host', 'Path');
+        $tableHeaders = ['Name', 'Method', 'Scheme', 'Host', 'Path'];
         if ($showControllers) {
             $tableHeaders[] = 'Controller';
         }
 
-        $tableRows = array();
+        $tableRows = [];
         foreach ($routes->all() as $name => $route) {
-            $row = array(
+            $row = [
                 $name,
                 $route->getMethods() ? implode('|', $route->getMethods()) : 'ANY',
                 $route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY',
                 '' !== $route->getHost() ? $route->getHost() : 'ANY',
                 $route->getPath(),
-            );
+            ];
 
             if ($showControllers) {
                 $controller = $route->getDefault('_controller');
@@ -75,22 +75,22 @@ protected function describeRouteCollection(RouteCollection $routes, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeRoute(Route $route, array $options = array())
+    protected function describeRoute(Route $route, array $options = [])
     {
-        $tableHeaders = array('Property', 'Value');
-        $tableRows = array(
-            array('Route Name', isset($options['name']) ? $options['name'] : ''),
-            array('Path', $route->getPath()),
-            array('Path Regex', $route->compile()->getRegex()),
-            array('Host', ('' !== $route->getHost() ? $route->getHost() : 'ANY')),
-            array('Host Regex', ('' !== $route->getHost() ? $route->compile()->getHostRegex() : '')),
-            array('Scheme', ($route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY')),
-            array('Method', ($route->getMethods() ? implode('|', $route->getMethods()) : 'ANY')),
-            array('Requirements', ($route->getRequirements() ? $this->formatRouterConfig($route->getRequirements()) : 'NO CUSTOM')),
-            array('Class', \get_class($route)),
-            array('Defaults', $this->formatRouterConfig($route->getDefaults())),
-            array('Options', $this->formatRouterConfig($route->getOptions())),
-        );
+        $tableHeaders = ['Property', 'Value'];
+        $tableRows = [
+            ['Route Name', isset($options['name']) ? $options['name'] : ''],
+            ['Path', $route->getPath()],
+            ['Path Regex', $route->compile()->getRegex()],
+            ['Host', ('' !== $route->getHost() ? $route->getHost() : 'ANY')],
+            ['Host Regex', ('' !== $route->getHost() ? $route->compile()->getHostRegex() : '')],
+            ['Scheme', ($route->getSchemes() ? implode('|', $route->getSchemes()) : 'ANY')],
+            ['Method', ($route->getMethods() ? implode('|', $route->getMethods()) : 'ANY')],
+            ['Requirements', ($route->getRequirements() ? $this->formatRouterConfig($route->getRequirements()) : 'NO CUSTOM')],
+            ['Class', \get_class($route)],
+            ['Defaults', $this->formatRouterConfig($route->getDefaults())],
+            ['Options', $this->formatRouterConfig($route->getOptions())],
+        ];
 
         $table = new Table($this->getOutput());
         $table->setHeaders($tableHeaders)->setRows($tableRows);
@@ -100,13 +100,13 @@ protected function describeRoute(Route $route, array $options = array())
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameters(ParameterBag $parameters, array $options = array())
+    protected function describeContainerParameters(ParameterBag $parameters, array $options = [])
     {
-        $tableHeaders = array('Parameter', 'Value');
+        $tableHeaders = ['Parameter', 'Value'];
 
-        $tableRows = array();
+        $tableRows = [];
         foreach ($this->sortParameters($parameters) as $parameter => $value) {
-            $tableRows[] = array($parameter, $this->formatParameter($value));
+            $tableRows[] = [$parameter, $this->formatParameter($value)];
         }
 
         $options['output']->title('Symfony Container Parameters');
@@ -116,7 +116,7 @@ protected function describeContainerParameters(ParameterBag $parameters, array $
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerTags(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerTags(ContainerBuilder $builder, array $options = [])
     {
         $showHidden = isset($options['show_hidden']) && $options['show_hidden'];
 
@@ -135,7 +135,7 @@ protected function describeContainerTags(ContainerBuilder $builder, array $optio
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerService($service, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerService($service, array $options = [], ContainerBuilder $builder = null)
     {
         if (!isset($options['id'])) {
             throw new \InvalidArgumentException('An "id" option must be provided.');
@@ -148,10 +148,10 @@ protected function describeContainerService($service, array $options = array(),
         } else {
             $options['output']->title(sprintf('Information for Service "<info>%s</info>"', $options['id']));
             $options['output']->table(
-                array('Service ID', 'Class'),
-                array(
-                    array(isset($options['id']) ? $options['id'] : '-', \get_class($service)),
-                )
+                ['Service ID', 'Class'],
+                [
+                    [isset($options['id']) ? $options['id'] : '-', \get_class($service)],
+                ]
             );
         }
     }
@@ -159,7 +159,7 @@ protected function describeContainerService($service, array $options = array(),
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerServices(ContainerBuilder $builder, array $options = array())
+    protected function describeContainerServices(ContainerBuilder $builder, array $options = [])
     {
         $showHidden = isset($options['show_hidden']) && $options['show_hidden'];
         $showTag = isset($options['tag']) ? $options['tag'] : null;
@@ -177,7 +177,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
         $options['output']->title($title);
 
         $serviceIds = isset($options['tag']) && $options['tag'] ? array_keys($builder->findTaggedServiceIds($options['tag'])) : $builder->getServiceIds();
-        $maxTags = array();
+        $maxTags = [];
 
         if (isset($options['filter'])) {
             $serviceIds = array_filter($serviceIds, $options['filter']);
@@ -212,8 +212,8 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
         $tagsCount = \count($maxTags);
         $tagsNames = array_keys($maxTags);
 
-        $tableHeaders = array_merge(array('Service ID'), $tagsNames, array('Class name'));
-        $tableRows = array();
+        $tableHeaders = array_merge(['Service ID'], $tagsNames, ['Class name']);
+        $tableRows = [];
         $rawOutput = isset($options['raw_text']) && $options['raw_text'];
         foreach ($this->sortServiceIds($serviceIds) as $serviceId) {
             $definition = $this->resolveServiceDefinition($builder, $serviceId);
@@ -222,24 +222,24 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
             if ($definition instanceof Definition) {
                 if ($showTag) {
                     foreach ($definition->getTag($showTag) as $key => $tag) {
-                        $tagValues = array();
+                        $tagValues = [];
                         foreach ($tagsNames as $tagName) {
                             $tagValues[] = isset($tag[$tagName]) ? $tag[$tagName] : '';
                         }
                         if (0 === $key) {
-                            $tableRows[] = array_merge(array($serviceId), $tagValues, array($definition->getClass()));
+                            $tableRows[] = array_merge([$serviceId], $tagValues, [$definition->getClass()]);
                         } else {
-                            $tableRows[] = array_merge(array('  "'), $tagValues, array(''));
+                            $tableRows[] = array_merge(['  "'], $tagValues, ['']);
                         }
                     }
                 } else {
-                    $tableRows[] = array($styledServiceId, $definition->getClass());
+                    $tableRows[] = [$styledServiceId, $definition->getClass()];
                 }
             } elseif ($definition instanceof Alias) {
                 $alias = $definition;
-                $tableRows[] = array_merge(array($styledServiceId, sprintf('alias for "%s"', $alias)), $tagsCount ? array_fill(0, $tagsCount, '') : array());
+                $tableRows[] = array_merge([$styledServiceId, sprintf('alias for "%s"', $alias)], $tagsCount ? array_fill(0, $tagsCount, '') : []);
             } else {
-                $tableRows[] = array_merge(array($styledServiceId, \get_class($definition)), $tagsCount ? array_fill(0, $tagsCount, '') : array());
+                $tableRows[] = array_merge([$styledServiceId, \get_class($definition)], $tagsCount ? array_fill(0, $tagsCount, '') : []);
             }
         }
 
@@ -249,7 +249,7 @@ protected function describeContainerServices(ContainerBuilder $builder, array $o
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerDefinition(Definition $definition, array $options = array())
+    protected function describeContainerDefinition(Definition $definition, array $options = [])
10000

     {
         if (isset($options['id'])) {
             $options['output']->title(sprintf('Information for Service "<info>%s</info>"', $options['id']));
@@ -259,14 +259,14 @@ protected function describeContainerDefinition(Definition $definition, array $op
             $options['output']->text($classDescription."\n");
         }
 
-        $tableHeaders = array('Option', 'Value');
+        $tableHeaders = ['Option', 'Value'];
 
-        $tableRows[] = array('Service ID', isset($options['id']) ? $options['id'] : '-');
-        $tableRows[] = array('Class', $definition->getClass() ?: '-');
+        $tableRows[] = ['Service ID', isset($options['id']) ? $options['id'] : '-'];
+        $tableRows[] = ['Class', $definition->getClass() ?: '-'];
 
         $omitTags = isset($options['omit_tags']) && $options['omit_tags'];
         if (!$omitTags && ($tags = $definition->getTags())) {
-            $tagInformation = array();
+            $tagInformation = [];
             foreach ($tags as $tagName => $tagData) {
                 foreach ($tagData as $tagParameters) {
                     $parameters = array_map(function ($key, $value) {
@@ -285,46 +285,46 @@ protected function describeContainerDefinition(Definition $definition, array $op
         } else {
             $tagInformation = '-';
         }
-        $tableRows[] = array('Tags', $tagInformation);
+        $tableRows[] = ['Tags', $tagInformation];
 
         $calls = $definition->getMethodCalls();
         if (\count($calls) > 0) {
-            $callInformation = array();
+            $callInformation = [];
             foreach ($calls as $call) {
                 $callInformation[] = $call[0];
             }
-            $tableRows[] = array('Calls', implode(', ', $callInformation));
+            $tableRows[] = ['Calls', implode(', ', $callInformation)];
         }
 
-        $tableRows[] = array('Public', $definition->isPublic() && !$definition->isPrivate() ? 'yes' : 'no');
-        $tableRows[] = array('Synthetic', $definition->isSynthetic() ? 'yes' : 'no');
-        $tableRows[] = array('Lazy', $definition->isLazy() ? 'yes' : 'no');
-        $tableRows[] = array('Shared', $definition->isShared() ? 'yes' : 'no');
-        $tableRows[] = array('Abstract', $definition->isAbstract() ? 'yes' : 'no');
-        $tableRows[] = array('Autowired', $definition->isAutowired() ? 'yes' : 'no');
-        $tableRows[] = array('Autoconfigured', $definition->isAutoconfigured() ? 'yes' : 'no');
+        $tableRows[] = ['Public', $definition->isPublic() && !$definition->isPrivate() ? 'yes' : 'no'];
+        $tableRows[] = ['Synthetic', $definition->isSynthetic() ? 'yes' : 'no'];
+        $tableRows[] = ['Lazy', $definition->isLazy() ? 'yes' : 'no'];
+        $tableRows[] = ['Shared', $definition->isShared() ? 'yes' : 'no'];
+        $tableRows[] = ['Abstract', $definition->isAbstract() ? 'yes' : 'no'];
+        $tableRows[] = ['Autowired', $definition->isAutowired() ? 'yes' : 'no'];
+        $tableRows[] = ['Autoconfigured', $definition->isAutoconfigured() ? 'yes' : 'no'];
 
         if ($definition->getFile()) {
-            $tableRows[] = array('Required File', $definition->getFile() ?: '-');
+            $tableRows[] = ['Required File', $definition->getFile() ?: '-'];
         }
 
         if ($factory = $definition->getFactory()) {
             if (\is_array($factory)) {
                 if ($factory[0] instanceof Reference) {
-                    $tableRows[] = array('Factory Service', $factory[0]);
+                    $tableRows[] = ['Factory Service', $factory[0]];
                 } elseif ($factory[0] instanceof Definition) {
                     throw new \InvalidArgumentException('Factory is not describable.');
                 } else {
-                    $tableRows[] = array('Factory Class', $factory[0]);
+                    $tableRows[] = ['Factory Class', $factory[0]];
                 }
-                $tableRows[] = array('Factory Method', $factory[1]);
+                $tableRows[] = ['Factory Method', $factory[1]];
             } else {
-                $tableRows[] = array('Factory Function', $factory);
+                $tableRows[] = ['Factory Function', $factory];
             }
         }
 
         $showArguments = isset($options['show_arguments']) && $options['show_arguments'];
-        $argumentsInformation = array();
+        $argumentsInformation = [];
         if ($showArguments && ($arguments = $definition->getArguments())) {
             foreach ($arguments as $argument) {
                 if ($argument instanceof ServiceClosureArgument) {
@@ -343,7 +343,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
                 }
             }
 
-            $tableRows[] = array('Arguments', implode("\n", $argumentsInformation));
+            $tableRows[] = ['Arguments', implode("\n", $argumentsInformation)];
         }
 
         $options['output']->table($tableHeaders, $tableRows);
@@ -352,7 +352,7 @@ protected function describeContainerDefinition(Definition $definition, array $op
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerAlias(Alias $alias, array $options = array(), ContainerBuilder $builder = null)
+    protected function describeContainerAlias(Alias $alias, array $options = [], ContainerBuilder $builder = null)
     {
         if ($alias->isPublic()) {
             $options['output']->comment(sprintf('This service is a <info>public</info> alias for the service <info>%s</info>', (string) $alias));
@@ -364,26 +364,26 @@ protected function describeContainerAlias(Alias $alias, array $options = array()
             return;
         }
 
-        return $this->describeContainerDefinition($builder->getDefinition((string) $alias), array_merge($options, array('id' => (string) $alias)));
+        return $this->describeContainerDefinition($builder->getDefinition((string) $alias), array_merge($options, ['id' => (string) $alias]));
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeContainerParameter($parameter, array $options = array())
+    protected function describeContainerParameter($parameter, array $options = [])
     {
         $options['output']->table(
-            array('Parameter', 'Value'),
-            array(
-                array($options['parameter'], $this->formatParameter($parameter),
-            ),
-        ));
+            ['Parameter', 'Value'],
+            [
+                [$options['parameter'], $this->formatParameter($parameter),
+            ],
+        ]);
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = array())
+    protected function describeEventDispatcherListeners(EventDispatcherInterface $eventDispatcher, array $options = [])
     {
         $event = array_key_exists('event', $options) ? $options['event'] : null;
 
@@ -410,19 +410,19 @@ protected function describeEventDispatcherListeners(EventDispatcherInterface $ev
     /**
      * {@inheritdoc}
      */
-    protected function describeCallable($callable, array $options = array())
+    protected function describeCallable($callable, array $options = [])
     {
         $this->writeText($this->formatCallable($callable), $options);
     }
 
     private function renderEventListenerTable(EventDispatcherInterface $eventDispatcher, $event, array $eventListeners, SymfonyStyle $io)
     {
-        $tableHeaders = array('Order', 'Callable', 'Priority');
-        $tableRows = array();
+        $tableHeaders = ['Order', 'Callable', 'Priority'];
+        $tableRows = [];
 
         $order = 1;
         foreach ($eventListeners as $order => $listener) {
-            $tableRows[] = array(sprintf('#%d', $order + 1), $this->formatCallable($listener), $eventDispatcher->getListenerPriority($event, $listener));
+            $tableRows[] = [sprintf('#%d', $order + 1), $this->formatCallable($listener), $eventDispatcher->getListenerPriority($event, $listener)];
         }
 
         $io->table($tableHeaders, $tableRows);
@@ -477,7 +477,7 @@ private function formatCallable($callable): string
         throw new \InvalidArgumentException('Callable is not describable.');
     }
 
-    private function writeText(string $content, array $options = array())
+    private function writeText(string $content, array $options = [])
     {
         $this->write(
             isset($options['raw_text']) && $options['raw_text'] ? strip_tags($content) : $content,
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
index cfd9c3c72eca..0650fea5cac7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
@@ -419,7 +419,7 @@ protected function addLink(Request $request, Link $link)
         }
 
         if (null === $linkProvider = $request->attributes->get('_links')) {
-            $request->attributes->set('_links', new GenericLinkProvider(array($link)));
+            $request->attributes->set('_links', new GenericLinkProvider([$link]));
 
             return;
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
index 12f209232068..1a8d6fb46199 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -64,7 +64,7 @@ public function getConfigTreeBuilder()
             ->beforeNormalization()
                 ->ifTrue(function ($v) { return !isset($v['assets']) && isset($v['templating']) && class_exists(Package::class); })
                 ->then(function ($v) {
-                    $v['assets'] = array();
+                    $v['assets'] = [];
 
                     return $v;
                 })
@@ -79,7 +79,7 @@ public function getConfigTreeBuilder()
                 ->booleanNode('test')->end()
                 ->scalarNode('default_locale')->defaultValue('en')->end()
                 ->arrayNode('trusted_hosts')
-                    ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                    ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                     ->prototype('scalar')->end()
                 ->end()
             ->end()
@@ -117,9 +117,9 @@ private function addCsrfSection(ArrayNodeDefinition $rootNode)
         $rootNode
             ->children()
                 ->arrayNode('csrf_protection')
-                    ->treatFalseLike(array('enabled' => false))
-                    ->treatTrueLike(array('enabled' => true))
-                    ->treatNullLike(array('enabled' => true))
+                    ->treatFalseLike(['enabled' => false])
+                    ->treatTrueLike(['enabled' => true])
+                    ->treatNullLike(['enabled' => true])
                     ->addDefaultsIfNotSet()
                     ->children()
                         // defaults to framework.session.enabled && !class_exists(FullStack::class) && interface_exists(CsrfTokenManagerInterface::class)
@@ -139,9 +139,9 @@ private function addFormSection(ArrayNodeDefinition $rootNode)
                     ->{!class_exists(FullStack::class) && class_exists(Form::class) ? 'canBeDisabled' : 'canBeEnabled'}()
                     ->children()
                         ->arrayNode('csrf_protection')
-                            ->treatFalseLike(array('enabled' => false))
-                            ->treatTrueLike(array('enabled' => true))
-                            ->treatNullLike(array('enabled' => true))
+                            ->treatFalseLike(['enabled' => false])
+                            ->treatTrueLike(['enabled' => true])
+                            ->treatNullLike(['enabled' => true])
                             ->addDefaultsIfNotSet()
                             ->children()
                                 ->booleanNode('enabled')->defaultNull()->end() // defaults to framework.csrf_protection.enabled
@@ -224,10 +224,10 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                 unset($workflows['enabled']);
 
                                 if (1 === \count($workflows) && isset($workflows[0]['enabled']) && 1 === \count($workflows[0])) {
-                                    $workflows = array();
+                                    $workflows = [];
                                 }
 
-                                if (1 === \count($workflows) && isset($workflows['workflows']) && array_keys($workflows['workflows']) !== range(0, \count($workflows) - 1) && !empty(array_diff(array_keys($workflows['workflows']), array('audit_trail', 'type', 'marking_store', 'supports', 'support_strategy', 'initial_place', 'places', 'transitions')))) {
+                                if (1 === \count($workflows) && isset($workflows['workflows']) && array_keys($workflows['workflows']) !== range(0, \count($workflows) - 1) && !empty(array_diff(array_keys($workflows['workflows']), ['audit_trail', 'type', 'marking_store', 'supports', 'support_strategy', 'initial_place', 'places', 'transitions']))) {
                                     $workflows = $workflows['workflows'];
                                 }
 
@@ -239,10 +239,10 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                     unset($workflows[$key]['enabled']);
                                 }
 
-                                $v = array(
+                                $v = [
                                     'enabled' => true,
                                     'workflows' => $workflows,
-                                );
+                                ];
                             }
 
                             return $v;
@@ -260,19 +260,19 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                         ->canBeEnabled()
                                     ->end()
                                     ->enumNode('type')
-                                        ->values(array('workflow', 'state_machine'))
+                                        ->values(['workflow', 'state_machine'])
                                         ->defaultValue('state_machine')
                                     ->end()
                                     ->arrayNode('marking_store')
                                         ->fixXmlConfig('argument')
                                         ->children()
                                             ->enumNode('type')
-                                                ->values(array('multiple_state', 'single_state'))
+                                                ->values(['multiple_state', 'single_state'])
                                             ->end()
                                             ->arrayNode('arguments')
                                                 ->beforeNormalization()
                                                     ->ifString()
-                                                    ->then(function ($v) { return array($v); })
+                                                    ->then(function ($v) { return [$v]; })
                                                 ->end()
                                                 ->requiresAtLeastOneElement()
                                                 ->prototype('scalar')
@@ -294,7 +294,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                     ->arrayNode('supports')
                                         ->beforeNormalization()
                                             ->ifString()
-                                            ->then(function ($v) { return array($v); })
+                                            ->then(function ($v) { return [$v]; })
                                         ->end()
                                         ->prototype('scalar')
                                             ->cannotBeEmpty()
@@ -317,7 +317,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 // It's an indexed array of shape  ['place1', 'place2']
                                                 if (isset($places[0]) && \is_string($places[0])) {
                                                     return array_map(function (string $place) {
-                                                        return array('name' => $place);
+                                                        return ['name' => $place];
                                                     }, $places);
                                                 }
 
@@ -347,8 +347,8 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->end()
                                                 ->arrayNode('metadata')
                                                     ->normalizeKeys(false)
-                                                    ->defaultValue(array())
-                                                    ->example(array('color' => 'blue', 'description' => 'Workflow to manage article.'))
+                                                    ->defaultValue([])
+                                                    ->example(['color' => 'blue', 'description' => 'Workflow to manage article.'])
                                                     ->prototype('variable')
                                                     ->end()
                                                 ->end()
@@ -391,7 +391,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->arrayNode('from')
                                                     ->beforeNormalization()
                                                         ->ifString()
-                                                        ->then(function ($v) { return array($v); })
+                                                        ->then(function ($v) { return [$v]; })
                                                     ->end()
                                                     ->requiresAtLeastOneElement()
                                                     ->prototype('scalar')
@@ -401,7 +401,7 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->arrayNode('to')
                                                     ->beforeNormalization()
                                                         ->ifString()
-                                                        ->then(function ($v) { return array($v); })
+                                                        ->then(function ($v) { return [$v]; })
                                                     ->end()
                                                     ->requiresAtLeastOneElement()
                                                     ->prototype('scalar')
@@ -410,8 +410,8 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                                 ->end()
                                                 ->arrayNode('metadata')
                                                     ->normalizeKeys(false)
-                                                    ->defaultValue(array())
-                                                    ->example(array('color' => 'blue', 'description' => 'Workflow to manage article.'))
+                                                    ->defaultValue([])
+                                                    ->example(['color' => 'blue', 'description' => 'Workflow to manage article.'])
                                                     ->prototype('variable')
                                                     ->end()
                                                 ->end()
@@ -420,8 +420,8 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode)
                                     ->end()
                                     ->arrayNode('metadata')
                                         ->normalizeKeys(false)
-                                        ->defaultValue(array())
-                                        ->example(array('color' => 'blue', 'description' => 'Workflow to manage article.'))
+                                        ->defaultValue([])
+                                        ->example(['color' => 'blue', 'description' => 'Workflow to manage article.'])
                                         ->prototype('variable')
                                         ->end()
                                     ->end()
@@ -497,9 +497,9 @@ private function addSessionSection(ArrayNodeDefinition $rootNode)
                         ->scalarNode('cookie_lifetime')->end()
                         ->scalarNode('cookie_path')->end()
                         ->scalarNode('cookie_domain')->end()
-                        ->enumNode('cookie_secure')->values(array(true, false, 'auto'))->end()
+                        ->enumNode('cookie_secure')->values([true, false, 'auto'])->end()
                         ->booleanNode('cookie_httponly')->defaultTrue()->end()
-                        ->enumNode('cookie_samesite')->values(array(null, Cookie::SAMESITE_LAX, Cookie::SAMESITE_STRICT))->defaultNull()->end()
+                        ->enumNode('cookie_samesite')->values([null, Cookie::SAMESITE_LAX, Cookie::SAMESITE_STRICT])->defaultNull()->end()
                         ->booleanNode('use_cookies')->end()
                         ->scalarNode('gc_divisor')->end()
                         ->scalarNode('gc_probability')->defaultValue(1)->end()
@@ -533,7 +533,7 @@ private function addRequestSection(ArrayNodeDefinition $rootNode)
                                 ->end()
                                 ->beforeNormalization()
                                     ->ifTrue(function ($v) { return !\is_array($v); })
-                                    ->then(function ($v) { return array($v); })
+                                    ->then(function ($v) { return [$v]; })
                                 ->end()
                                 ->prototype('scalar')->end()
                             ->end()
@@ -553,7 +553,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                     ->canBeEnabled()
                     ->beforeNormalization()
                         ->ifTrue(function ($v) { return false === $v || \is_array($v) && false === $v['enabled']; })
-                        ->then(function () { return array('enabled' => false, 'engines' => false); })
+                        ->then(function () { return ['enabled' => false, 'engines' => false]; })
                     ->end()
                     ->children()
                         ->scalarNode('hinclude_default_template')->defaultNull()->end()
@@ -568,7 +568,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                                     ->validate()
                                         ->ifTrue(function ($v) {return !\in_array('FrameworkBundle:Form', $v); })
                                         ->then(function ($v) {
-                                            return array_merge(array('FrameworkBundle:Form'), $v);
+                                            return array_merge(['FrameworkBundle:Form'], $v);
                                         })
                                     ->end()
                                 ->end()
@@ -578,13 +578,13 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                     ->fixXmlConfig('engine')
                     ->children()
                         ->arrayNode('engines')
-                            ->example(array('twig'))
+                            ->example(['twig'])
                             ->isRequired()
                             ->requiresAtLeastOneElement()
                             ->canBeUnset()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v) && false !== $v; })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                             ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -594,7 +594,7 @@ private function addTemplatingSection(ArrayNodeDefinition $rootNode)
                         ->arrayNode('loaders')
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                              ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -622,7 +622,7 @@ private function addAssetsSection(ArrayNodeDefinition $rootNode)
                             ->requiresAtLeastOneElement()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
-                                ->then(function ($v) { return array($v); })
+                                ->then(function ($v) { return [$v]; })
                             ->end()
                             ->prototype('scalar')->end()
                         ->end()
@@ -666,7 +666,7 @@ private function addAssetsSection(ArrayNodeDefinition $rootNode)
                                         ->requiresAtLeastOneElement()
                                         ->beforeNormalization()
                                             ->ifTrue(function ($v) { return !\is_array($v); })
-                                            ->then(function ($v) { return array($v); })
+                                            ->then(function ($v) { return [$v]; })
                                         ->end()
                                         ->prototype('scalar')->end()
                                     ->end()
@@ -708,9 +708,9 @@ private function addTranslatorSection(ArrayNodeDefinition $rootNode)
                     ->fixXmlConfig('path')
                     ->children()
                         ->arrayNode('fallbacks')
-                            ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                            ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                             ->prototype('scalar')->end()
-                            ->defaultValue(array('en'))
+                            ->defaultValue(['en'])
                         ->end()
                         ->booleanNode('logging')->defaultValue(false)->end()
                         ->scalarNode('formatter')->defaultValue('translator.formatter.default')->end()
@@ -759,9 +759,9 @@ private function addValidationSection(ArrayNodeDefinition $rootNode)
                         ->scalarNode('cache')->end()
                         ->booleanNode('enable_annotations')->{!class_exists(FullStack::class) && class_exists(Annotation::class) ? 'defaultTrue' : 'defaultFalse'}()->end()
                         ->arrayNode('static_method')
-                            ->defaultValue(array('loadValidatorMetadata'))
+                            ->defaultValue(['loadValidatorMetadata'])
                             ->prototype('scalar')->end()
-                            ->treatFalseLike(array())
+                            ->treatFalseLike([])
                             ->validate()
                                 ->ifTrue(function ($v) { return !\is_array($v); })
                                 ->then(function ($v) { return (array) $v; })
@@ -769,7 +769,7 @@ private function addValidationSection(ArrayNodeDefinition $rootNode)
                         ->end()
                         ->scalarNode('translation_domain')->defaultValue('validators')->end()
                         ->booleanNode('strict_email')->end()
-                        ->enumNode('email_validation_mode')->values(array('html5', 'loose', 'strict'))->end()
+                        ->enumNode('email_validation_mode')->values(['html5', 'loose', 'strict'])->end()
                         ->arrayNode('mapping')
                             ->addDefaultsIfNotSet()
                             ->fixXmlConfig('path')
@@ -946,7 +946,7 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                     ->info('Lock configuration')
                     ->{!class_exists(FullStack::class) && class_exists(Lock::class) ? 'canBeDisabled' : 'canBeEnabled'}()
                     ->beforeNormalization()
-                        ->ifString()->then(function ($v) { return array('enabled' => true, 'resources' => $v); })
+                        ->ifString()->then(function ($v) { return ['enabled' => true, 'resources' => $v]; })
                     ->end()
                     ->beforeNormalization()
                         ->ifTrue(function ($v) { return \is_array($v) && !isset($v['resources']); })
@@ -954,7 +954,7 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                             $e = $v['enabled'];
                             unset($v['enabled']);
 
-                            return array('enabled' => $e, 'resources' => $v);
+                            return ['enabled' => $e, 'resources' => $v];
                         })
                     ->end()
                     ->addDefaultsIfNotSet()
@@ -962,16 +962,16 @@ private function addLockSection(ArrayNodeDefinition $rootNode)
                     ->children()
                         ->arrayNode('resources')
                             ->requiresAtLeastOneElement()
-                            ->defaultValue(array('default' => array(class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock')))
+                            ->defaultValue(['default' => [class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock']])
                             ->beforeNormalization()
-                                ->ifString()->then(function ($v) { return array('default' => $v); })
+                                ->ifString()->then(function ($v) { return ['default' => $v]; })
                             ->end()
                             ->beforeNormalization()
                                 ->ifTrue(function ($v) { return \is_array($v) && array_keys($v) === range(0, \count($v) - 1); })
-                                ->then(function ($v) { return array('default' => $v); })
+                                ->then(function ($v) { return ['default' => $v]; })
                             ->end()
                             ->prototype('array')
-                                ->beforeNormalization()->ifString()->then(function ($v) { return array($v); })->end()
+                                ->beforeNormalization()->ifString()->then(function ($v) { return [$v]; })->end()
                                 ->prototype('scalar')->end()
                             ->end()
                         ->end()
@@ -1009,16 +1009,16 @@ private function addMessengerSection(ArrayNodeDefinition $rootNode)
                                 ->always()
                                 ->then(function ($config) {
                                     if (!\is_array($config)) {
-                                        return array();
+                                        return [];
                                     }
 
-                                    $newConfig = array();
+                                    $newConfig = [];
                                     foreach ($config as $k => $v) {
                                         if (!\is_int($k)) {
-                                            $newConfig[$k] = array(
-                                                'senders' => $v['senders'] ?? (\is_array($v) ? array_values($v) : array($v)),
+                                            $newConfig[$k] = [
+                                                'senders' => $v['senders'] ?? (\is_array($v) ? array_values($v) : [$v]),
                                                 'send_and_handle' => $v['send_and_handle'] ?? false,
-                                            );
+                                            ];
                                         } else {
                                             $newConfig[$v['message-class']]['senders'] = array_map(
                                                 function ($a) {
@@ -1049,11 +1049,11 @@ function ($a) {
                                 ->always()
                                 ->then(function ($config) {
                                     if (false === $config) {
-                                        return array('id' => null);
+                                        return ['id' => null];
                                     }
 
                                     if (\is_string($config)) {
-                                        return array('id' => $config);
+                                        return ['id' => $config];
                                     }
 
                                     return $config;
@@ -1065,7 +1065,7 @@ function ($a) {
                                 ->arrayNode('context')
                                     ->normalizeKeys(false)
                                     ->useAttributeAsKey('name')
-                                    ->defaultValue(array())
+                                    ->defaultValue([])
                                     ->prototype('variable')->end()
                                 ->end()
                             ->end()
@@ -1076,7 +1076,7 @@ function ($a) {
                                 ->beforeNormalization()
                                     ->ifString()
                                     ->then(function (string $dsn) {
-                                        return array('dsn' => $dsn);
+                                        return ['dsn' => $dsn];
                                     })
                                 ->end()
                                 ->fixXmlConfig('option')
@@ -1084,7 +1084,7 @@ function ($a) {
                                     ->scalarNode('dsn')->end()
                                     ->arrayNode('options')
                                         ->normalizeKeys(false)
-                                        ->defaultValue(array())
+                                        ->defaultValue([])
                                         ->prototype('variable')
                                         ->end()
                                     ->end()
@@ -1093,27 +1093,27 @@ function ($a) {
                         ->end()
                         ->scalarNode('default_bus')->defaultNull()->end()
                         ->arrayNode('buses')
-                            ->defaultValue(array('messenger.bus.default' => array('default_middleware' => true, 'middleware' => array())))
+                            ->defaultValue(['messenger.bus.default' => ['default_middleware' => true, 'middleware' => []]])
                             ->useAttributeAsKey('name')
                             ->arrayPrototype()
                                 ->addDefaultsIfNotSet()
                                 ->children()
                                     ->enumNode('default_middleware')
-                                        ->values(array(true, false, 'allow_no_handlers'))
+                                        ->values([true, false, 'allow_no_handlers'])
                                         ->defaultTrue()
                                     ->end()
                                     ->arrayNode('middleware')
                                         ->beforeNormalization()
                                             ->ifTrue(function ($v) { return \is_string($v) || (\is_array($v) && !\is_int(key($v))); })
-                                            ->then(function ($v) { return array($v); })
+                                            ->then(function ($v) { return [$v]; })
                                         ->end()
-                                        ->defaultValue(array())
+                                        ->defaultValue([])
                                         ->arrayPrototype()
                                             ->beforeNormalization()
                                                 ->always()
                                                 ->then(function ($middleware): array {
                                                     if (!\is_array($middleware)) {
-                                                        return array('id' => $middleware);
+                                                        return ['id' => $middleware];
                                                     }
                                                     if (isset($middleware['id'])) {
                                                         return $middleware;
@@ -1122,10 +1122,10 @@ function ($a) {
                                                         throw new \InvalidArgumentException(sprintf('Invalid middleware at path "framework.messenger": a map with a single factory id as key and its arguments as value was expected, %s given.', json_encode($middleware)));
                                                     }
 
-                                                    return array(
+                                                    return [
                                                         'id' => key($middleware),
                                                         'arguments' => current($middleware),
-                                                    );
+                                                    ];
                                                 })
                                             ->end()
                                             ->fixXmlConfig('argument')
@@ -1133,7 +1133,7 @@ function ($a) {
                                                 ->scalarNode('id')->isRequired()->cannotBeEmpty()->end()
                                                 ->arrayNode('arguments')
                                                     ->normalizeKeys(false)
-                                                    ->defaultValue(array())
+                                                    ->defaultValue([])
                                                     ->prototype('variable')
                                                 ->end()
                                             ->end()
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index 19ba861564a9..87ce95e44bc1 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -180,7 +180,7 @@ public function load(array $configs, ContainerBuilder $container)
 
         if (!$container->hasParameter('debug.file_link_format')) {
             if (!$container->hasParameter('templating.helper.code.file_link_format')) {
-                $links = array(
+                $links = [
                     'textmate' => 'txmt://open?url=file://%%f&line=%%l',
                     'macvim' => 'mvim://open?url=file://%%f&line=%%l',
                     'emacs' => 'emacs://open?url=file://%%f&line=%%l',
@@ -188,7 +188,7 @@ public function load(array $configs, ContainerBuilder $container)
                     'phpstorm' => 'phpstorm://open?file=%%f&line=%%l',
                     'atom' => 'atom://core/open/file?filename=%%f&line=%%l',
                     'vscode' => 'vscode://file/%%f:%%l',
-                );
+                ];
                 $ide = $config['ide'];
 
                 $container->setParameter('templating.helper.code.file_link_format', str_replace('%', '%%', ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format')) ?: (isset($links[$ide]) ? $links[$ide] : $ide));
@@ -301,13 +301,13 @@ public function load(array $configs, ContainerBuilder $container)
             $loader->load('web_link.xml');
         }
 
-        $this->addAnnotatedClassesToCompile(array(
+        $this->addAnnotatedClassesToCompile([
             '**\\Controller\\',
             '**\\Entity\\',
 
             // Added explicitly so that we don't rely on the class map being dumped to make it work
             'Symfony\\Bundle\\FrameworkBundle\\Controller\\AbstractController',
-        ));
+        ]);
 
         $container->registerForAutoconfiguration(Command::class)
             ->addTag('console.command');
@@ -340,11 +340,11 @@ public function load(array $configs, ContainerBuilder $container)
         $container->registerForAutoconfiguration(EventSubscriberInterface::class)
             ->addTag('kernel.event_subscriber');
         $container->registerForAutoconfiguration(ResetInterface::class)
-            ->addTag('kernel.reset', array('method' => 'reset'));
+            ->addTag('kernel.reset', ['method' => 'reset']);
 
         if (!interface_exists(MarshallerInterface::class)) {
             $container->registerForAutoconfiguration(ResettableInterface::class)
-                ->addTag('kernel.reset', array('method' => 'reset'));
+                ->addTag('kernel.reset', ['method' => 'reset']);
         }
 
         $container->registerForAutoconfiguration(PropertyListExtractorInterface::class)
@@ -374,11 +374,11 @@ public function load(array $configs, ContainerBuilder $container)
         $container->registerForAutoconfiguration(TransportFactoryInterface::class)
             ->addTag('messenger.transport_factory');
         $container->registerForAutoconfiguration(LoggerAwareInterface::class)
-            ->addMethodCall('setLogger', array(new Reference('logger')));
+            ->addMethodCall('setLogger', [new Reference('logger')]);
 
         if (!$container->getParameter('kernel.debug')) {
             // remove tagged iterator argument for resource checkers
-            $container->getDefinition('config_cache_factory')->setArguments(array());
+            $container->getDefinition('config_cache_factory')->setArguments([]);
         }
     }
 
@@ -450,7 +450,7 @@ private function registerProfilerConfiguration(array $config, ContainerBuilder $
     {
         if (!$this->isConfigEnabled($container, $config)) {
             // this is needed for the WebProfiler to work even if the profiler is disabled
-            $container->setParameter('data_collector.templates', array());
+            $container->setParameter('data_collector.templates', []);
 
             return;
         }
@@ -490,7 +490,7 @@ private function registerProfilerConfiguration(array $config, ContainerBuilder $
 
         $container->getDefinition('profiler')
             ->addArgument($config['collect'])
-            ->addTag('kernel.reset', array('method' => 'reset'));
+            ->addTag('kernel.reset', ['method' => 'reset']);
     }
 
     private function registerWorkflowConfiguration(array $config, ContainerBuilder $container, XmlFileLoader $loader)
@@ -514,11 +514,11 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             $workflowId = sprintf('%s.%s', $type, $name);
 
             // Process Metadata (workflow + places (transition is done in the "create transition" block))
-            $metadataStoreDefinition = new Definition(Workflow\Metadata\InMemoryMetadataStore::class, array(array(), array(), null));
+            $metadataStoreDefinition = new Definition(Workflow\Metadata\InMemoryMetadataStore::class, [[], [], null]);
             if ($workflow['metadata']) {
                 $metadataStoreDefinition->replaceArgument(0, $workflow['metadata']);
             }
-            $placesMetadata = array();
+            $placesMetadata = [];
             foreach ($workflow['places'] as $place) {
                 if ($place['metadata']) {
                     $placesMetadata[$place['name']] = $place['metadata'];
@@ -529,14 +529,14 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             }
 
             // Create transitions
-            $transitions = array();
-            $guardsConfiguration = array();
+            $transitions = [];
+            $guardsConfiguration = [];
             $transitionsMetadataDefinition = new Definition(\SplObjectStorage::class);
             // Global transition counter per workflow
             $transitionCounter = 0;
             foreach ($workflow['transitions'] as $transition) {
                 if ('workflow' === $type) {
-                    $transitionDefinition = new Definition(Workflow\Transition::class, array($transition['name'], $transition['from'], $transition['to']));
+                    $transitionDefinition = new Definition(Workflow\Transition::class, [$transition['name'], $transition['from'], $transition['to']]);
                     $transitionDefinition->setPublic(false);
                     $transitionId = sprintf('%s.transition.%s', $workflowId, $transitionCounter++);
                     $container->setDefinition($transitionId, $transitionDefinition);
@@ -550,15 +550,15 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                         $guardsConfiguration[$eventName][] = $configuration;
                     }
                     if ($transition['metadata']) {
-                        $transitionsMetadataDefinition->addMethodCall('attach', array(
+                        $transitionsMetadataDefinition->addMethodCall('attach', [
                             new Reference($transitionId),
                             $transition['metadata'],
-                        ));
+                        ]);
                     }
                 } elseif ('state_machine' === $type) {
                     foreach ($transition['from'] as $from) {
                         foreach ($transition['to'] as $to) {
-                            $transitionDefinition = new Definition(Workflow\Transition::class, array($transition['name'], $from, $to));
+                            $transitionDefinition = new Definition(Workflow\Transition::class, [$transition['name'], $from, $to]);
                             $transitionDefinition->setPublic(false);
                             $transitionId = sprintf('%s.transition.%s', $workflowId, $transitionCounter++);
                             $container->setDefinition($transitionId, $transitionDefinition);
@@ -572,10 +572,10 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                                 $guardsConfiguration[$eventName][] = $configuration;
                             }
                             if ($transition['metadata']) {
-                                $transitionsMetadataDefinition->addMethodCall('attach', array(
+                                $transitionsMetadataDefinition->addMethodCall('attach', [
                                     new Reference($transitionId),
                                     $transition['metadata'],
-                                ));
+                                ]);
                             }
                         }
                     }
@@ -593,11 +593,11 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             $definitionDefinition->addArgument($transitions);
             $definitionDefinition->addArgument($workflow['initial_place'] ?? null);
             $definitionDefinition->addArgument($metadataStoreDefinition);
-            $definitionDefinition->addTag('workflow.definition', array(
+            $definitionDefinition->addTag('workflow.definition', [
                 'name' => $name,
                 'type' => $type,
                 'marking_store' => isset($workflow['marking_store']['type']) ? $workflow['marking_store']['type'] : null,
-            ));
+            ]);
 
             // Create MarkingStore
             if (isset($workflow['marking_store']['type'])) {
@@ -625,22 +625,22 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
             // Add workflow to Registry
             if ($workflow['supports']) {
                 foreach ($workflow['supports'] as $supportedClassName) {
-                    $strategyDefinition = new Definition(Workflow\SupportStrategy\InstanceOfSupportStrategy::class, array($supportedClassName));
+                    $strategyDefinition = new Definition(Workflow\SupportStrategy\InstanceOfSupportStrategy::class, [$supportedClassName]);
                     $strategyDefinition->setPublic(false);
-                    $registryDefinition->addMethodCall('addWorkflow', array(new Reference($workflowId), $strategyDefinition));
+                    $registryDefinition->addMethodCall('addWorkflow', [new Reference($workflowId), $strategyDefinition]);
                 }
             } elseif (isset($workflow['support_strategy'])) {
-                $registryDefinition->addMethodCall('addWorkflow', array(new Reference($workflowId), new Reference($workflow['support_strategy'])));
+                $registryDefinition->addMethodCall('addWorkflow', [new Reference($workflowId), new Reference($workflow['support_strategy'])]);
             }
 
             // Enable the AuditTrail
             if ($workflow['audit_trail']['enabled']) {
                 $listener = new Definition(Workflow\EventListener\AuditTrailListener::class);
                 $listener->setPrivate(true);
-                $listener->addTag('monolog.logger', array('channel' => 'workflow'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.leave', $name), 'method' => 'onLeave'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.transition', $name), 'method' => 'onTransition'));
-                $listener->addTag('kernel.event_listener', array('event' => sprintf('workflow.%s.enter', $name), 'method' => 'onEnter'));
+                $listener->addTag('monolog.logger', ['channel' => 'workflow']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.leave', $name), 'method' => 'onLeave']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.transition', $name), 'method' => 'onTransition']);
+                $listener->addTag('kernel.event_listener', ['event' => sprintf('workflow.%s.enter', $name), 'method' => 'onEnter']);
                 $listener->addArgument(new Reference('logger'));
                 $container->setDefinition(sprintf('%s.listener.audit_trail', $workflowId), $listener);
             }
@@ -658,7 +658,7 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                 $guard = new Definition(Workflow\EventListener\GuardListener::class);
                 $guard->setPrivate(true);
 
-                $guard->setArguments(array(
+                $guard->setArguments([
                     $guardsConfiguration,
                     new Reference('workflow.security.expression_language'),
                     new Reference('security.token_storage'),
@@ -666,9 +666,9 @@ private function registerWorkflowConfiguration(array $config, ContainerBuilder $
                     new Reference('security.authentication.trust_resolver'),
                     new Reference('security.role_hierarchy'),
                     new Reference('validator', ContainerInterface::NULL_ON_INVALID_REFERENCE),
-                ));
+                ]);
                 foreach ($guardsConfiguration as $eventName => $config) {
-                    $guard->addTag('kernel.event_listener', array('event' => $eventName, 'method' => 'onTransition'));
+                    $guard->addTag('kernel.event_listener', ['event' => $eventName, 'method' => 'onTransition']);
                 }
 
                 $container->setDefinition(sprintf('%s.listener.guard', $workflowId), $guard);
@@ -685,7 +685,7 @@ private function registerDebugConfiguration(array $config, ContainerBuilder $con
             $container->register('debug.stopwatch', Stopwatch::class)
                 ->addArgument(true)
                 ->setPrivate(true)
-                ->addTag('kernel.reset', array('method' => 'reset'));
+                ->addTag('kernel.reset', ['method' => 'reset']);
             $container->setAlias(Stopwatch::class, new Alias('debug.stopwatch', false));
         }
 
@@ -734,7 +734,7 @@ private function registerRouterConfiguration(array $config, ContainerBuilder $co
         $loader->load('routing.xml');
 
         if ($config['utf8']) {
-            $container->getDefinition('routing.loader')->replaceArgument(2, array('utf8' => true));
+            $container->getDefinition('routing.loader')->replaceArgument(2, ['utf8' => true]);
         }
 
         $container->setParameter('router.resource', $config['resource']);
@@ -753,24 +753,24 @@ private function registerRouterConfiguration(array $config, ContainerBuilder $co
         if ($this->annotationsConfigEnabled) {
             $container->register('routing.loader.annotation', AnnotatedRouteControllerLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
+                ->addTag('routing.loader', ['priority' => -10])
                 ->addArgument(new Reference('annotation_reader'));
 
             $container->register('routing.loader.annotation.directory', AnnotationDirectoryLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
-                ->setArguments(array(
+                ->addTag('routing.loader', ['priority' => -10])
+                ->setArguments([
                     new Reference('file_locator'),
                     new Reference('routing.loader.annotation'),
-                ));
+                ]);
 
             $container->register('routing.loader.annotation.file', AnnotationFileLoader::class)
                 ->setPublic(false)
-                ->addTag('routing.loader', array('priority' => -10))
-                ->setArguments(array(
+                ->addTag('routing.loader', ['priority' => -10])
+                ->setArguments([
                     new Reference('file_locator'),
                     new Reference('routing.loader.annotation'),
-                ));
+                ]);
         }
     }
 
@@ -780,8 +780,8 @@ private function registerSessionConfiguration(array $config, ContainerBuilder $c
 
         // session storage
         $container->setAlias('session.storage', $config['storage_id'])->setPrivate(true);
-        $options = array('cache_limiter' => '0');
-        foreach (array('name', 'cookie_lifetime', 'cookie_path', 'cookie_domain', 'cookie_secure', 'cookie_httponly', 'cookie_samesite', 'use_cookies', 'gc_maxlifetime', 'gc_probability', 'gc_divisor') as $key) {
+        $options = ['cache_limiter' => '0'];
+        foreach (['name', 'cookie_lifetime', 'cookie_path', 'cookie_domain', 'cookie_secure', 'cookie_httponly', 'cookie_samesite', 'use_cookies', 'gc_maxlifetime', 'gc_probability', 'gc_divisor'] as $key) {
             if (isset($config[$key])) {
                 $options[$key] = $config[$key];
             }
@@ -789,10 +789,10 @@ private function registerSessionConfiguration(array $config, ContainerBuilder $c
 
         if ('auto' === ($options['cookie_secure'] ?? null)) {
             $locator = $container->getDefinition('session_listener')->getArgument(0);
-            $locator->setValues($locator->getValues() + array(
+            $locator->setValues($locator->getValues() + [
                 'session_storage' => new Reference('session.storage', ContainerInterface::IGNORE_ON_INVALID_REFERENCE),
                 'request_stack' => new Reference('request_stack'),
-            ));
+            ]);
         }
 
         $container->setParameter('session.storage.options', $options);
@@ -831,11 +831,11 @@ private function registerTemplatingConfiguration(array $config, ContainerBuilder
             $logger = new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE);
 
             $container->getDefinition('templating.loader.cache')
-                ->addTag('monolog.logger', array('channel' => 'templating'))
-                ->addMethodCall('setLogger', array($logger));
+                ->addTag('monolog.logger', ['channel' => 'templating'])
+                ->addMethodCall('setLogger', [$logger]);
             $container->getDefinition('templating.loader.chain')
-                ->addTag('monolog.logger', array('channel' => 'templating'))
-                ->addMethodCall('setLogger', array($logger));
+                ->addTag('monolog.logger', ['channel' => 'templating'])
+                ->addMethodCall('setLogger', [$logger]);
         }
 
         if (!empty($config['loaders'])) {
@@ -869,13 +869,13 @@ private function registerTemplatingConfiguration(array $config, ContainerBuilder
         } else {
             $templateEngineDefinition = $container->getDefinition('templating.engine.delegating');
             foreach ($engines as $engine) {
-                $templateEngineDefinition->addMethodCall('addEngine', array($engine));
+                $templateEngineDefinition->addMethodCall('addEngine', [$engine]);
             }
             $container->setAlias('templating', 'templating.engine.delegating')->setPublic(true);
         }
 
         $container->getDefinition('fragment.renderer.hinclude')
-            ->addTag('kernel.fragment_renderer', array('alias' => 'hinclude'))
+            ->addTag('kernel.fragment_renderer', ['alias' => 'hinclude'])
             ->replaceArgument(0, new Reference('templating'))
         ;
 
@@ -915,7 +915,7 @@ private function registerAssetsConfiguration(array $config, ContainerBuilder $co
         $defaultPackage = $this->createPackageDefinition($config['base_path'], $config['base_urls'], $defaultVersion);
         $container->setDefinition('assets._default_package', $defaultPackage);
 
-        $namedPackages = array();
+        $namedPackages = [];
         foreach ($config['packages'] as $name => $package) {
             if (null !== $package['version_strategy']) {
                 $version = new Reference($package['version_strategy']);
@@ -998,13 +998,13 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
         $container->setAlias('translator', 'translator.default')->setPublic(true);
         $container->setAlias('translator.formatter', new Alias($config['formatter'], false));
         $translator = $container->findDefinition('translator.default');
-        $translator->addMethodCall('setFallbackLocales', array($config['fallbacks']));
+        $translator->addMethodCall('setFallbackLocales', [$config['fallbacks']]);
 
         $container->setParameter('translator.logging', $config['logging']);
         $container->setParameter('translator.default_path', $config['default_path']);
 
         // Discover translation directories
-        $dirs = array();
+        $dirs = [];
         if (class_exists('Symfony\Component\Validator\Validation')) {
             $r = new \ReflectionClass('Symfony\Component\Validator\Validation');
 
@@ -1054,7 +1054,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
 
         // Register translation resources
         if ($dirs) {
-            $files = array();
+            $files = [];
             $finder = Finder::create()
                 ->followLinks()
                 ->files()
@@ -1068,7 +1068,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
             foreach ($finder as $file) {
                 list(, $locale) = explode('.', $file->getBasename(), 3);
                 if (!isset($files[$locale])) {
-                    $files[$locale] = array();
+                    $files[$locale] = [];
                 }
 
                 $files[$locale][] = (string) $file;
@@ -1076,7 +1076,7 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
 
             $options = array_merge(
                 $translator->getArgument(4),
-                array('resource_files' => $files)
+                ['resource_files' => $files]
             );
 
             $translator->replaceArgument(4, $options);
@@ -1103,15 +1103,15 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
 
         $container->setParameter('validator.translation_domain', $config['translation_domain']);
 
-        $files = array('xml' => array(), 'yml' => array());
+        $files = ['xml' => [], 'yml' => []];
         $this->registerValidatorMapping($container, $config, $files);
 
         if (!empty($files['xml'])) {
-            $validatorBuilder->addMethodCall('addXmlMappings', array($files['xml']));
+            $validatorBuilder->addMethodCall('addXmlMappings', [$files['xml']]);
         }
 
         if (!empty($files['yml'])) {
-            $validatorBuilder->addMethodCall('addYamlMappings', array($files['yml']));
+            $validatorBuilder->addMethodCall('addYamlMappings', [$files['yml']]);
         }
 
         $definition = $container->findDefinition('validator.email');
@@ -1122,17 +1122,17 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
                 throw new \LogicException('"enable_annotations" on the validator cannot be set as Annotations support is disabled.');
             }
 
-            $validatorBuilder->addMethodCall('enableAnnotationMapping', array(new Reference('annotation_reader')));
+            $validatorBuilder->addMethodCall('enableAnnotationMapping', [new Reference('annotation_reader')]);
         }
 
         if (array_key_exists('static_method', $config) && $config['static_method']) {
             foreach ($config['static_method'] as $methodName) {
-                $validatorBuilder->addMethodCall('addMethodMapping', array($methodName));
+                $validatorBuilder->addMethodCall('addMethodMapping', [$methodName]);
             }
         }
 
         if (!$container->getParameter('kernel.debug')) {
-            $validatorBuilder->addMethodCall('setMetadataCache', array(new Reference('validator.mapping.cache.symfony')));
+            $validatorBuilder->addMethodCall('setMetadataCache', [new Reference('validator.mapping.cache.symfony')]);
         }
     }
 
@@ -1212,7 +1212,7 @@ private function registerAnnotationsConfiguration(array $config, ContainerBuilde
 
         if (!method_exists(AnnotationRegistry::class, 'registerUniqueLoader')) {
             $container->getDefinition('annotations.dummy_registry')
-                ->setMethodCalls(array(array('registerLoader', array('class_exists'))));
+                ->setMethodCalls([['registerLoader', ['class_exists']]]);
         }
 
         if ('none' !== $config['cache']) {
@@ -1323,7 +1323,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
             $container->removeDefinition('serializer.encoder.yaml');
         }
 
-        $serializerLoaders = array();
+        $serializerLoaders = [];
         if (isset($config['enable_annotations']) && $config['enable_annotations']) {
             if (!$this->annotationsConfigEnabled) {
                 throw new \LogicException('"enable_annotations" on the serializer cannot be set as Annotations support is disabled.');
@@ -1331,7 +1331,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
 
             $annotationLoader = new Definition(
                 'Symfony\Component\Serializer\Mapping\Loader\AnnotationLoader',
-                array(new Reference('annotation_reader'))
+                [new Reference('annotation_reader')]
             );
             $annotationLoader->setPublic(false);
 
@@ -1339,7 +1339,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         }
 
         $fileRecorder = function ($extension, $path) use (&$serializerLoaders) {
-            $definition = new Definition(\in_array($extension, array('yaml', 'yml')) ? 'Symfony\Component\Serializer\Mapping\Loader\YamlFileLoader' : 'Symfony\Component\Serializer\Mapping\Loader\XmlFileLoader', array($path));
+            $definition = new Definition(\in_array($extension, ['yaml', 'yml']) ? 'Symfony\Component\Serializer\Mapping\Loader\YamlFileLoader' : 'Symfony\Component\Serializer\Mapping\Loader\XmlFileLoader', [$path]);
             $definition->setPublic(false);
             $serializerLoaders[] = $definition;
         };
@@ -1376,10 
10000
+1376,10 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         if (!$container->getParameter('kernel.debug')) {
             $cacheMetadataFactory = new Definition(
                 CacheClassMetadataFactory::class,
-                array(
+                [
                     new Reference('serializer.mapping.cache_class_metadata_factory.inner'),
                     new Reference('serializer.mapping.cache.symfony'),
-                )
+                ]
             );
             $cacheMetadataFactory->setPublic(false);
             $cacheMetadataFactory->setDecoratedService('serializer.mapping.class_metadata_factory');
@@ -1392,11 +1392,11 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
         }
 
         if (isset($config['circular_reference_handler']) && $config['circular_reference_handler']) {
-            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setCircularReferenceHandler', array(new Reference($config['circular_reference_handler'])));
+            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setCircularReferenceHandler', [new Reference($config['circular_reference_handler'])]);
         }
 
         if ($config['max_depth_handler'] ?? false) {
-            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setMaxDepthHandler', array(new Reference($config['max_depth_handler'])));
+            $container->getDefinition('serializer.normalizer.object')->addMethodCall('setMaxDepthHandler', [new Reference($config['max_depth_handler'])]);
         }
     }
 
@@ -1411,8 +1411,8 @@ private function registerPropertyInfoConfiguration(ContainerBuilder $container,
         if (interface_exists('phpDocumentor\Reflection\DocBlockFactoryInterface')) {
             $definition = $container->register('property_info.php_doc_extractor', 'Symfony\Component\PropertyInfo\Extractor\PhpDocExtractor');
             $definition->setPrivate(true);
-            $definition->addTag('property_info.description_extractor', array('priority' => -1000));
-            $definition->addTag('property_info.type_extractor', array('priority' => -1001));
+            $definition->addTag('property_info.description_extractor', ['priority' => -1000]);
+            $definition->addTag('property_info.type_extractor', ['priority' => -1001]);
         }
     }
 
@@ -1426,7 +1426,7 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
             }
 
             // Generate stores
-            $storeDefinitions = array();
+            $storeDefinitions = [];
             foreach ($resourceStores as $storeDsn) {
                 $storeDsn = $container->resolveEnvPlaceholders($storeDsn, null, $usedEnvs);
                 switch (true) {
@@ -1448,15 +1448,15 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
                         if (!$container->hasDefinition($connectionDefinitionId = '.lock_connection.'.$container->hash($storeDsn))) {
                             $connectionDefinition = new Definition(\stdClass::class);
                             $connectionDefinition->setPublic(false);
-                            $connectionDefinition->setFactory(array(AbstractAdapter::class, 'createConnection'));
-                            $connectionDefinition->setArguments(array($storeDsn, array('lazy' => true)));
+                            $connectionDefinition->setFactory([AbstractAdapter::class, 'createConnection']);
+                            $connectionDefinition->setArguments([$storeDsn, ['lazy' => true]]);
                             $container->setDefinition($connectionDefinitionId, $connectionDefinition);
                         }
 
                         $storeDefinition = new Definition(StoreInterface::class);
                         $storeDefinition->setPublic(false);
-                        $storeDefinition->setFactory(array(StoreFactory::class, 'createStore'));
-                        $storeDefinition->setArguments(array(new Reference($connectionDefinitionId)));
+                        $storeDefinition->setFactory([StoreFactory::class, 'createStore']);
+                        $storeDefinition->setArguments([new Reference($connectionDefinitionId)]);
 
                         $container->setDefinition($storeDefinitionId = '.lock.'.$resourceName.'.store.'.$container->hash($storeDsn), $storeDefinition);
 
@@ -1486,8 +1486,8 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
             // Generate services for lock instances
             $lockDefinition = new Definition(Lock::class);
             $lockDefinition->setPublic(false);
-            $lockDefinition->setFactory(array(new Reference('lock.'.$resourceName.'.factory'), 'createLock'));
-            $lockDefinition->setArguments(array($resourceName));
+            $lockDefinition->setFactory([new Reference('lock.'.$resourceName.'.factory'), 'createLock']);
+            $lockDefinition->setArguments([$resourceName]);
             $container->setDefinition('lock.'.$resourceName, $lockDefinition);
 
             // provide alias for default resource
@@ -1539,16 +1539,16 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
             $config['default_bus'] = key($config['buses']);
         }
 
-        $defaultMiddleware = array(
-            'before' => array(array('id' => 'logging')),
-            'after' => array(array('id' => 'send_message'), array('id' => 'handle_message')),
-        );
+        $defaultMiddleware = [
+            'before' => [['id' => 'logging']],
+            'after' => [['id' => 'send_message'], ['id' => 'handle_message']],
+        ];
         foreach ($config['buses'] as $busId => $bus) {
             $middleware = $bus['middleware'];
 
             if ($bus['default_middleware']) {
                 if ('allow_no_handlers' === $bus['default_middleware']) {
-                    $defaultMiddleware['after'][1]['arguments'] = array(true);
+                    $defaultMiddleware['after'][1]['arguments'] = [true];
                 } else {
                     unset($defaultMiddleware['after'][1]['arguments']);
                 }
@@ -1556,17 +1556,17 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
             }
 
             foreach ($middleware as $middlewareItem) {
-                if (!$validationConfig['enabled'] && \in_array($middlewareItem['id'], array('validation', 'messenger.middleware.validation'), true)) {
+                if (!$validationConfig['enabled'] && \in_array($middlewareItem['id'], ['validation', 'messenger.middleware.validation'], true)) {
                     throw new LogicException('The Validation middleware is only available when the Validator component is installed and enabled. Try running "composer require symfony/validator".');
                 }
             }
 
             if ($container->getParameter('kernel.debug') && class_exists(Stopwatch::class)) {
-                array_unshift($middleware, array('id' => 'traceable', 'arguments' => array($busId)));
+                array_unshift($middleware, ['id' => 'traceable', 'arguments' => [$busId]]);
             }
 
             $container->setParameter($busId.'.middleware', $middleware);
-            $container->register($busId, MessageBus::class)->addArgument(array())->addTag('messenger.bus');
+            $container->register($busId, MessageBus::class)->addArgument([])->addTag('messenger.bus');
 
             if ($busId === $config['default_bus']) {
                 $container->setAlias('message_bus', $busId)->setPublic(true);
@@ -1576,28 +1576,28 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
             }
         }
 
-        $senderAliases = array();
+        $senderAliases = [];
         foreach ($config['transports'] as $name => $transport) {
             if (0 === strpos($transport['dsn'], 'amqp://') && !$container->hasDefinition('messenger.transport.amqp.factory')) {
                 throw new LogicException('The default AMQP transport is not available. Make sure you have installed and enabled the Serializer component. Try enabling it or running "composer require symfony/serializer-pack".');
             }
 
             $transportDefinition = (new Definition(TransportInterface::class))
-                ->setFactory(array(new Reference('messenger.transport_factory'), 'createTransport'))
-                ->setArguments(array($transport['dsn'], $transport['options']))
-                ->addTag('messenger.receiver', array('alias' => $name))
+                ->setFactory([new Reference('messenger.transport_factory'), 'createTransport'])
+                ->setArguments([$transport['dsn'], $transport['options']])
+                ->addTag('messenger.receiver', ['alias' => $name])
             ;
             $container->setDefinition($transportId = 'messenger.transport.'.$name, $transportDefinition);
             $senderAliases[$name] = $transportId;
         }
 
-        $messageToSendersMapping = array();
-        $messagesToSendAndHandle = array();
+        $messageToSendersMapping = [];
+        $messagesToSendAndHandle = [];
         foreach ($config['routing'] as $message => $messageConfiguration) {
             if ('*' !== $message && !class_exists($message) && !interface_exists($message, false)) {
                 throw new LogicException(sprintf('Invalid Messenger routing configuration: class or interface "%s" not found.', $message));
             }
-            $senders = array();
+            $senders = [];
             foreach ($messageConfiguration['senders'] as $sender) {
                 $senders[$sender] = new Reference($senderAliases[$sender] ?? $sender);
             }
@@ -1630,24 +1630,24 @@ private function registerCacheConfiguration(array $config, ContainerBuilder $con
             // Inline any env vars referenced in the parameter
             $container->setParameter('cache.prefix.seed', $container->resolveEnvPlaceholders($container->getParameter('cache.prefix.seed'), true));
         }
-        foreach (array('doctrine', 'psr6', 'redis', 'memcached', 'pdo') as $name) {
+        foreach (['doctrine', 'psr6', 'redis', 'memcached', 'pdo'] as $name) {
             if (isset($config[$name = 'default_'.$name.'_provider'])) {
                 $container->setAlias('cache.'.$name, new Alias(CachePoolPass::getServiceProvider($container, $config[$name]), false));
             }
         }
-        foreach (array('app', 'system') as $name) {
-            $config['pools']['cache.'.$name] = array(
+        foreach (['app', 'system'] as $name) {
+            $config['pools']['cache.'.$name] = [
                 'adapter' => $config[$name],
                 'public' => true,
                 'tags' => false,
-            );
+            ];
         }
         foreach ($config['pools'] as $name => $pool) {
             if ($config['pools'][$pool['adapter']]['tags'] ?? false) {
                 $pool['adapter'] = '.'.$pool['adapter'].'.inner';
             }
             $definition = new ChildDefinition($pool['adapter']);
-            if (!\in_array($name, array('cache.app', 'cache.system'), true)) {
+            if (!\in_array($name, ['cache.app', 'cache.system'], true)) {
                 $container->registerAliasForArgument($name, CacheInterface::class);
                 $container->registerAliasForArgument($name, CacheItemPoolInterface::class);
             }
@@ -1678,13 +1678,13 @@ private function registerCacheConfiguration(array $config, ContainerBuilder $con
             $propertyAccessDefinition->setPublic(false);
 
             if (!$container->getParameter('kernel.debug')) {
-                $propertyAccessDefinition->setFactory(array(PropertyAccessor::class, 'createCache'));
-                $propertyAccessDefinition->setArguments(array(null, null, $version, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
-                $propertyAccessDefinition->addTag('cache.pool', array('clearer' => 'cache.system_clearer'));
-                $propertyAccessDefinition->addTag('monolog.logger', array('channel' => 'cache'));
+                $propertyAccessDefinition->setFactory([PropertyAccessor::class, 'createCache']);
+                $propertyAccessDefinition->setArguments([null, null, $version, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)]);
+                $propertyAccessDefinition->addTag('cache.pool', ['clearer' => 'cache.system_clearer']);
+                $propertyAccessDefinition->addTag('monolog.logger', ['channel' => 'cache']);
             } else {
                 $propertyAccessDefinition->setClass(ArrayAdapter::class);
-                $propertyAccessDefinition->setArguments(array(0, false));
+                $propertyAccessDefinition->setArguments([0, false]);
             }
         }
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Routing/DelegatingLoader.php b/src/Symfony/Bundle/FrameworkBundle/Routing/DelegatingLoader.php
index 84e237626ce2..1e6b90a9bf10 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Routing/DelegatingLoader.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Routing/DelegatingLoader.php
@@ -34,7 +34,7 @@ class DelegatingLoader extends BaseDelegatingLoader
      * @param ControllerNameParser    $parser   A ControllerNameParser instance
      * @param LoaderResolverInterface $resolver A LoaderResolverInterface instance
      */
-    public function __construct(ControllerNameParser $parser, LoaderResolverInterface $resolver, array $defaultOptions = array())
+    public function __construct(ControllerNameParser $parser, LoaderResolverInterface $resolver, array $defaultOptions = [])
     {
         $this->parser = $parser;
         $this->defaultOptions = $defaultOptions;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php
index e15273c38539..1b16d47dbb3f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/StopwatchHelper.php
@@ -33,7 +33,7 @@ public function getName()
         return 'stopwatch';
     }
 
-    public function __call($method, $arguments = array())
+    public function __call($method, $arguments = [])
     {
         if (null !== $this->stopwatch) {
             if (method_exists($this->stopwatch, $method)) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
index 19829a26e89d..22fed9921b57 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
@@ -61,10 +61,10 @@ public function transChoice($id, $number, array $parameters = [], $domain = 'mes
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%count%" parameter.', __METHOD__), E_USER_DEPRECATED);
 
         if (null === $this->translator) {
-            return $this->doTrans($id, array('%count%' => $number) + $parameters, $domain, $locale);
+            return $this->doTrans($id, ['%count%' => $number] + $parameters, $domain, $locale);
         }
         if ($this->translator instanceof TranslatorInterface) {
-            return $this->translator->trans($id, array('%count%' => $number) + $parameters, $domain, $locale);
+            return $this->translator->trans($id, ['%count%' => $number] + $parameters, $domain, $locale);
         }
 
         return $this->translator->transChoice($id, $number, $parameters, $domain, $locale);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php
index 4c7c1c929ad9..ccaa64931b5c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php
@@ -27,10 +27,10 @@ public function testWarmUp()
             $this->markTestSkipped('The Serializer default cache warmer has been introduced in the Serializer Component version 3.2.');
         }
 
-        $loaders = array(
+        $loaders = [
             new XmlFileLoader(__DIR__.'/../Fixtures/Serialization/Resources/person.xml'),
             new YamlFileLoader(__DIR__.'/../Fixtures/Serialization/Resources/author.yml'),
-        );
+        ];
 
         $file = sys_get_temp_dir().'/cache-serializer.php';
         @unlink($file);
@@ -55,7 +55,7 @@ public function testWarmUpWithoutLoader()
         $file = sys_get_temp_dir().'/cache-serializer-without-loader.php';
         @unlink($file);
 
-        $warmer = new SerializerCacheWarmer(array(), $file);
+        $warmer = new SerializerCacheWarmer([], $file);
         $warmer->warmUp(\dirname($file));
 
         $this->assertFileExists($file);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
index a082e0140161..400f994d2f6f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
@@ -26,24 +26,24 @@ class TranslationDebugCommandTest extends TestCase
 
     public function testDebugMissingMessages()
     {
-        $tester = $this->createCommandTester(array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'en', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester(['foo' => 'foo']);
+        $tester->execute(['locale' => 'en', 'bundle' => 'foo']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
     }
 
     public function testDebugUnusedMessages()
     {
-        $tester = $this->createCommandTester(array(), array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'en', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester([], ['foo' => 'foo']);
+        $tester->execute(['locale' => 'en', 'bundle' => 'foo']);
 
         $this->assertRegExp('/unused/', $tester->getDisplay());
     }
 
     public function testDebugFallbackMessages()
     {
-        $tester = $this->createCommandTester(array(), array('foo' => 'foo'));
-        $tester->execute(array('locale' => 'fr', 'bundle' => 'foo'));
+        $tester = $this->createCommandTester([], ['foo' => 'foo']);
+        $tester->execute(['locale' => 'fr', 'bundle' => 'foo']);
 
         $this->assertRegExp('/fallback/', $tester->getDisplay());
     }
@@ -51,15 +51,15 @@ public function testDebugFallbackMessages()
     public function testNoDefinedMessages()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('locale' => 'fr', 'bundle' => 'test'));
+        $tester->execute(['locale' => 'fr', 'bundle' => 'test']);
 
         $this->assertRegExp('/No defined or extracted messages for locale "fr"/', $tester->getDisplay());
     }
 
     public function testDebugDefaultDirectory()
     {
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'));
-        $tester->execute(array('locale' => 'en'));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar']);
+        $tester->execute(['locale' => 'en']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -75,8 +75,8 @@ public function testDebugLegacyDefaultDirectory()
         $this->fs->mkdir($this->translationDir.'/Resources/translations');
         $this->fs->mkdir($this->translationDir.'/Resources/views');
 
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'));
-        $tester->execute(array('locale' => 'en'));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar']);
+        $tester->execute(['locale' => 'en']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -90,8 +90,8 @@ public function testDebugDefaultRootDirectory()
         $this->fs->mkdir($this->translationDir.'/translations');
         $this->fs->mkdir($this->translationDir.'/templates');
 
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'));
-        $tester->execute(array('locale' => 'en'));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar']);
+        $tester->execute(['locale' => 'en']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -107,8 +107,8 @@ public function testDebugCustomDirectory()
             ->with($this->equalTo($this->translationDir.'/customDir'))
             ->willThrowException(new \InvalidArgumentException());
 
-        $tester = $this->createCommandTester(array('foo' => 'foo'), array('bar' => 'bar'), $kernel);
-        $tester->execute(array('locale' => 'en', 'bundle' => $this->translationDir.'/customDir'));
+        $tester = $this->createCommandTester(['foo' => 'foo'], ['bar' => 'bar'], $kernel);
+        $tester->execute(['locale' => 'en', 'bundle' => $this->translationDir.'/customDir']);
 
         $this->assertRegExp('/missing/', $tester->getDisplay());
         $this->assertRegExp('/unused/', $tester->getDisplay());
@@ -125,8 +125,8 @@ public function testDebugInvalidDirectory()
             ->with($this->equalTo('dir'))
             ->willThrowException(new \InvalidArgumentException());
 
-        $tester = $this->createCommandTester(array(), array(), $kernel);
-        $tester->execute(array('locale' => 'en', 'bundle' => 'dir'));
+        $tester = $this->createCommandTester([], [], $kernel);
+        $tester->execute(['locale' => 'en', 'bundle' => 'dir']);
     }
 
     protected function setUp()
@@ -145,7 +145,7 @@ protected function tearDown()
     /**
      * @return CommandTester
      */
-    private function createCommandTester($extractedMessages = array(), $loadedMessages = array(), $kernel = null)
+    private function createCommandTester($extractedMessages = [], $loadedMessages = [], $kernel = null)
     {
         $translator = $this->getMockBuilder('Symfony\Component\Translation\Translator')
             ->disableOriginalConstructor()
@@ -154,7 +154,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $translator
             ->expects($this->any())
             ->method('getFallbackLocales')
-            ->will($this->returnValue(array('en')));
+            ->will($this->returnValue(['en']));
 
         $extractor = $this->getMockBuilder('Symfony\Component\Translation\Extractor\ExtractorInterface')->getMock();
         $extractor
@@ -177,15 +177,15 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
             );
 
         if (null === $kernel) {
-            $returnValues = array(
-                array('foo', $this->getBundle($this->translationDir)),
-                array('test', $this->getBundle('test')),
-            );
+            $returnValues = [
+                ['foo', $this->getBundle($this->translationDir)],
+                ['test', $this->getBundle('test')],
+            ];
             if (HttpKernel\Kernel::VERSION_ID < 40000) {
-                $returnValues = array(
-                    array('foo', true, $this->getBundle($this->translationDir)),
-                    array('test', true, $this->getBundle('test')),
-                );
+                $returnValues = [
+                    ['foo', true, $this->getBundle($this->translationDir)],
+                    ['test', true, $this->getBundle('test')],
+                ];
             }
             $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\KernelInterface')->getMock();
             $kernel
@@ -197,7 +197,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
         $kernel
             ->expects($this->any())
             ->method('getBundles')
-            ->will($this->returnValue(array()));
+            ->will($this->returnValue([]));
 
         $container = new Container();
         $container->setParameter('kernel.root_dir', $this->translationDir);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
index 40ade53e2730..b1a957201f50 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
@@ -93,8 +93,8 @@ public function testWriteMessagesInLegacyRootDirectory()
         $this->fs->mkdir($this->translationDir.'/Resources/translations');
         $this->fs->mkdir($this->translationDir.'/Resources/views');
 
-        $tester = $this->createCommandTester(array('messages' => array('foo' => 'foo')));
-        $tester->execute(array('command' => 'translation:update', 'locale' => 'en', '--force' => true));
+        $tester = $this->createCommandTester(['messages' => ['foo' => 'foo']]);
+        $tester->execute(['command' => 'translation:update', 'locale' => 'en', '--force' => true]);
         $this->assertRegExp('/Translation files were successfully updated./', $tester->getDisplay());
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
index 0a1368a4d186..33b0cb637584 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/AbstractDescriptorTest.php
@@ -203,12 +203,12 @@ public function testGetClassDecription($object, $expectedDescription)
 
     public function getClassDescriptionTestData()
     {
-        return array(
-            array(ClassWithDocCommentOnMultipleLines::class, 'This is the first line of the description. This is the second line.'),
-            array(ClassWithDocCommentWithoutInitialSpace::class, 'Foo.'),
-            array(ClassWithoutDocComment::class, ''),
-            array(ClassWithDocComment::class, 'This is a class with a doc comment.'),
-        );
+        return [
+            [ClassWithDocCommentOnMultipleLines::class, 'This is the first line of the description. This is the second line.'],
+            [ClassWithDocCommentWithoutInitialSpace::class, 'Foo.'],
+            [ClassWithoutDocComment::class, ''],
+            [ClassWithDocComment::class, 'This is a class with a doc comment.'],
+        ];
     }
 
     abstract protected function getDescriptor();
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
index 58b1d29227cc..caafff6842dc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Console/Descriptor/ObjectsProvider.php
@@ -98,10 +98,10 @@ public static function getContainerBuilders()
 
     public static function getContainerDefinitionsWithExistingClasses()
     {
-        return array(
+        return [
             'existing_class_def_1' => new Definition(ClassWithDocComment::class),
             'existing_class_def_2' => new Definition(ClassWithoutDocComment::class),
-        );
+        ];
     }
 
     public static function getContainerDefinitions()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolClearerPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolClearerPassTest.php
index 67aa34cf5bac..494cf6f0941b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolClearerPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolClearerPassTest.php
@@ -37,18 +37,18 @@ public function testPoolRefsAreWeak()
 
         $publicPool = new Definition();
         $publicPool->addArgument('namespace');
-        $publicPool->addTag('cache.pool', array('clearer' => 'clearer_alias'));
+        $publicPool->addTag('cache.pool', ['clearer' => 'clearer_alias']);
         $container->setDefinition('public.pool', $publicPool);
 
         $publicPool = new Definition();
         $publicPool->addArgument('namespace');
-        $publicPool->addTag('cache.pool', array('clearer' => 'clearer_alias', 'name' => 'pool2'));
+        $publicPool->addTag('cache.pool', ['clearer' => 'clearer_alias', 'name' => 'pool2']);
         $container->setDefinition('public.pool2', $publicPool);
 
         $privatePool = new Definition();
         $privatePool->setPublic(false);
         $privatePool->addArgument('namespace');
-        $privatePool->addTag('cache.pool', array('clearer' => 'clearer_alias'));
+        $privatePool->addTag('cache.pool', ['clearer' => 'clearer_alias']);
         $container->setDefinition('private.pool', $privatePool);
 
         $clearer = new Definition();
@@ -58,18 +58,18 @@ public function testPoolRefsAreWeak()
         $pass = new RemoveUnusedDefinitionsPass();
         foreach ($container->getCompiler()->getPassConfig()->getRemovingPasses() as $removingPass) {
             if ($removingPass instanceof RepeatedPass) {
-                $pass->setRepeatedPass(new RepeatedPass(array($pass)));
+                $pass->setRepeatedPass(new RepeatedPass([$pass]));
                 break;
             }
         }
-        foreach (array(new CachePoolPass(), $pass, new CachePoolClearerPass()) as $pass) {
+        foreach ([new CachePoolPass(), $pass, new CachePoolClearerPass()] as $pass) {
             $pass->process($container);
         }
 
-        $expected = array(array(
+        $expected = [[
             'public.pool' => new Reference('public.pool'),
             'pool2' => new Reference('public.pool2'),
-        ));
+        ]];
         $this->assertEquals($expected, $clearer->getArguments());
         $this->assertEquals($expected, $globalClearer->getArguments());
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPassTest.php
index 087f07854e7d..747e29ffefe8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/CachePoolPassTest.php
@@ -97,10 +97,10 @@ public function testWithNameAttribute()
         $container->setParameter('kernel.container_class', 'app');
         $container->setParameter('cache.prefix.seed', 'foo');
         $cachePool = new Definition();
-        $cachePool->addTag('cache.pool', array(
+        $cachePool->addTag('cache.pool', [
             'name' => 'foobar',
             'provider' => 'foobar',
-        ));
+        ]);
         $cachePool->addArgument(null);
         $cachePool->addArgument(null);
         $cachePool->addArgument(null);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/DataCollectorTranslatorPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/DataCollectorTranslatorPassTest.php
index 481500c2cb98..4496c7927e4c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/DataCollectorTranslatorPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/DataCollectorTranslatorPassTest.php
@@ -33,11 +33,11 @@ protected function setUp()
         $this->container->register('translator.data_collector', 'Symfony\Component\Translation\DataCollectorTranslator')
             ->setPublic(false)
             ->setDecoratedService('translator')
-            ->setArguments(array(new Reference('translator.data_collector.inner')))
+            ->setArguments([new Reference('translator.data_collector.inner')])
         ;
 
         $this->container->register('data_collector.translation', 'Symfony\Component\Translation\DataCollector\TranslationDataCollector')
-            ->setArguments(array(new Reference('translator.data_collector')))
+            ->setArguments([new Reference('translator.data_collector')])
         ;
     }
 
@@ -67,10 +67,10 @@ public function testProcessKeepsDataCollectorIfTranslatorImplementsTranslatorBag
 
     public function getImplementingTranslatorBagInterfaceTranslatorClassNames()
     {
-        return array(
-            array('Symfony\Component\Translation\Translator'),
-            array('%translator_implementing_bag%'),
-        );
+        return [
+            ['Symfony\Component\Translation\Translator'],
+            ['%translator_implementing_bag%'],
+        ];
     }
 
     /**
@@ -99,16 +99,16 @@ public function testProcessRemovesDataCollectorIfTranslatorDoesNotImplementTrans
 
     public function getNotImplementingTranslatorBagInterfaceTranslatorClassNames()
     {
-        return array(
-            array('Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\Compiler\TranslatorWithTranslatorBag'),
-            array('%translator_not_implementing_bag%'),
-        );
+        return [
+            ['Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\Compiler\TranslatorWithTranslatorBag'],
+            ['%translator_not_implementing_bag%'],
+        ];
     }
 }
 
 class TranslatorWithTranslatorBag implements TranslatorInterface
 {
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
index 9a3b2183e12d..453ccf449dd1 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -26,35 +26,35 @@ class ConfigurationTest extends TestCase
     public function testDefaultConfig()
     {
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(true), array(array('secret' => 's3cr3t')));
+        $config = $processor->processConfiguration(new Configuration(true), [['secret' => 's3cr3t']]);
 
         $this->assertEquals(
-            array_merge(array('secret' => 's3cr3t', 'trusted_hosts' => array()), self::getBundleDefaultConfig()),
+            array_merge(['secret' => 's3cr3t', 'trusted_hosts' => []], self::getBundleDefaultConfig()),
             $config
         );
     }
 
     public function testDoNoDuplicateDefaultFormResources()
     {
-        $input = array('templating' => array(
-            'form' => array('resources' => array('FrameworkBundle:Form')),
-            'engines' => array('php'),
-        ));
+        $input = ['templating' => [
+            'form' => ['resources' => ['FrameworkBundle:Form']],
+            'engines' => ['php'],
+        ]];
 
         $processor = new Processor();
-        $config = $processor->processConfiguration(new Configuration(true), array($input));
+        $config = $processor->processConfiguration(new Configuration(true), [$input]);
 
-        $this->assertEquals(array('FrameworkBundle:Form'), $config['templating']['form']['resources']);
+        $this->assertEquals(['FrameworkBundle:Form'], $config['templating']['form']['resources']);
     }
 
     public function getTestValidSessionName()
     {
-        return array(
-            array(null),
-            array('PHPSESSID'),
-            array('a&b'),
-            array(',_-!@#$%^*(){}:<>/?'),
-        );
+        return [
+            [null],
+            ['PHPSESSID'],
+            ['a&b'],
+            [',_-!@#$%^*(){}:<>/?'],
+        ];
     }
 
     /**
@@ -66,38 +66,38 @@ public function testInvalidSessionName($sessionName)
         $processor = new Processor();
         $processor->processConfiguration(
             new Configuration(true),
-            array(array('session' => array('name' => $sessionName)))
+            [['session' => ['name' => $sessionName]]]
         );
     }
 
     public function getTestInvalidSessionName()
     {
-        return array(
-            array('a.b'),
-            array('a['),
-            array('a[]'),
-            array('a[b]'),
-            array('a=b'),
-            array('a+b'),
-        );
+        return [
+            ['a.b'],
+            ['a['],
+            ['a[]'],
+            ['a[b]'],
+            ['a=b'],
+            ['a+b'],
+        ];
     }
 
     public function testAssetsCanBeEnabled()
     {
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $config = $processor->processConfiguration($configuration, array(array('assets' => null)));
+        $config = $processor->processConfiguration($configuration, [['assets' => null]]);
 
-        $defaultConfig = array(
+        $defaultConfig = [
             'enabled' => true,
             'version_strategy' => null,
             'version' => null,
             'version_format' => '%%s?%%s',
             'base_path' => '',
-            'base_urls' => array(),
-            'packages' => array(),
+            'base_urls' => [],
+            'packages' => [],
             'json_manifest_path' => null,
-        );
+        ];
 
         $this->assertEquals($defaultConfig, $config['assets']);
     }
@@ -116,120 +116,120 @@ public function testInvalidAssetsConfiguration(array $assetConfig, $expectedMess
 
         $processor = new Processor();
         $configuration = new Configuration(true);
-        $processor->processConfiguration($configuration, array(
-                array(
+        $processor->processConfiguration($configuration, [
+                [
                     'assets' => $assetConfig,
-                ),
-            ));
+                ],
+            ]);
     }
 
     public function provideInvalidAssetConfigurationTests()
     {
         // helper to turn config into embedded package config
         $createPackageConfig = function (array $packageConfig) {
-            return array(
+            return [
                 'base_urls' => '//example.com',
                 'version' => 1,
-                'packages' => array(
+                'packages' => [
                     'foo' => $packageConfig,
-                ),
-            );
+                ],
+            ];
         };
 
-        $config = array(
+        $config = [
             'version' => 1,
             'version_strategy' => 'foo',
-        );
-        yield array($config, 'You cannot use both "version_strategy" and "version" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version_strategy" and "version" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version_strategy" and "version" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version_strategy" and "version" at the same time under "assets" packages.'];
 
-        $config = array(
+        $config = [
             'json_manifest_path' => '/foo.json',
             'version_strategy' => 'foo',
-        );
-        yield array($config, 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version_strategy" and "json_manifest_path" at the same time under "assets" packages.'];
 
-        $config = array(
+        $config = [
             'json_manifest_path' => '/foo.json',
             'version' => '1',
-        );
-        yield array($config, 'You cannot use both "version" and "json_manifest_path" at the same time under "assets".');
-        yield array($createPackageConfig($config), 'You cannot use both "version" and "json_manifest_path" at the same time under "assets" packages.');
+        ];
+        yield [$config, 'You cannot use both "version" and "json_manifest_path" at the same time under "assets".'];
+        yield [$createPackageConfig($config), 'You cannot use both "version" and "json_manifest_path" at the same time under "assets" packages.'];
     }
 
     protected static function getBundleDefaultConfig()
     {
-        return array(
+        return [
             'http_method_override' => true,
             'ide' => null,
             'default_locale' => 'en',
-            'csrf_protection' => array(
+            'csrf_protection' => [
                 'enabled' => false,
-            ),
-            'form' => array(
+            ],
+            'form' => [
                 'enabled' => !class_exists(FullStack::class),
-                'csrf_protection' => array(
+                'csrf_protection' => [
                     'enabled' => null, // defaults to csrf_protection.enabled
                     'field_name' => '_token',
-                ),
-            ),
-            'esi' => array('enabled' => false),
-            'ssi' => array('enabled' => false),
-            'fragments' => array(
+                ],
+            ],
+            'esi' => ['enabled' => false],
+            'ssi' => ['enabled' => false],
+            'fragments' => [
                 'enabled' => false,
                 'path' => '/_fragment',
-            ),
-            'profiler' => array(
+            ],
+            'profiler' => [
                 'enabled' => false,
                 'only_exceptions' => false,
                 'only_master_requests' => false,
                 'dsn' => 'file:%kernel.cache_dir%/profiler',
                 'collect' => true,
-            ),
-            'translator' => array(
+            ],
+            'translator' => [
                 'enabled' => !class_exists(FullStack::class),
-                'fallbacks' => array('en'),
+                'fallbacks' => ['en'],
                 'logging' => false,
                 'formatter' => 'translator.formatter.default',
-                'paths' => array(),
+                'paths' => [],
                 'default_path' => '%kernel.project_dir%/translations',
-            ),
-            'validation' => array(
+            ],
+            'validation' => [
                 'enabled' => !class_exists(FullStack::class),
                 'enable_annotations' => !class_exists(FullStack::class),
-                'static_method' => array('loadValidatorMetadata'),
+                'static_method' => ['loadValidatorMetadata'],
                 'translation_domain' => 'validators',
-                'mapping' => array(
-                    'paths' => array(),
-                ),
-            ),
-            'annotations' => array(
+                'mapping' => [
+                    'paths' => [],
+                ],
+            ],
+            'annotations' => [
                 'cache' => 'php_array',
                 'file_cache_dir' => '%kernel.cache_dir%/annotations',
                 'debug' => true,
                 'enabled' => true,
-            ),
-            'serializer' => array(
+            ],
+            'serializer' => [
                 'enabled' => !class_exists(FullStack::class),
                 'enable_annotations' => !class_exists(FullStack::class),
-                'mapping' => array('paths' => array()),
-            ),
-            'property_access' => array(
+                'mapping' => ['paths' => []],
+            ],
+            'property_access' => [
                 'magic_call' => false,
                 'throw_exception_on_invalid_index' => false,
-            ),
-            'property_info' => array(
+            ],
+            'property_info' => [
                 'enabled' => !class_exists(FullStack::class),
-            ),
-            'router' => array(
+            ],
+            'router' => [
                 'enabled' => false,
                 'http_port' => 80,
                 'https_port' => 443,
                 'strict_requirements' => true,
                 'utf8' => false,
-            ),
-            'session' => array(
+            ],
+            'session' => [
                 'enabled' => false,
                 'storage_id' => 'session.storage.native',
                 'handler_id' => 'session.handler.native_file',
@@ -238,70 +238,70 @@ protected static function getBundleDefaultConfig()
                 'gc_probability' => 1,
                 'save_path' => '%kernel.cache_dir%/sessions',
                 'metadata_update_threshold' => 0,
-            ),
-            'request' => array(
+            ],
+            'request' => [
                 'enabled' => false,
-                'formats' => array(),
-            ),
-            'templating' => array(
+                'formats' => [],
+            ],
+            'templating' => [
                 'enabled' => false,
                 'hinclude_default_template' => null,
-                'form' => array(
-                    'resources' => array('FrameworkBundle:Form'),
-                ),
-                'engines' => array(),
-                'loaders' => array(),
-            ),
-            'assets' => array(
+                'form' => [
+                    'resources' => ['FrameworkBundle:Form'],
+                ],
+                'engines' => [],
+                'loaders' => [],
+            ],
+            'assets' => [
                 'enabled' => !class_exists(FullStack::class),
                 'version_strategy' => null,
                 'version' => null,
                 'version_format' => '%%s?%%s',
                 'base_path' => '',
-                'base_urls' => array(),
-                'packages' => array(),
+                'base_urls' => [],
+                'packages' => [],
                 'json_manifest_path' => null,
-            ),
-            'cache' => array(
-                'pools' => array(),
+            ],
+            'cache' => [
+                'pools' => [],
                 'app' => 'cache.adapter.filesystem',
                 'system' => 'cache.adapter.system',
                 'directory' => '%kernel.cache_dir%/pools',
                 'default_redis_provider' => 'redis://localhost',
                 'default_memcached_provider' => 'memcached://localhost',
                 'default_pdo_provider' => class_exists(Connection::class) ? 'database_connection' : null,
-            ),
-            'workflows' => array(
+            ],
+            'workflows' => [
                 'enabled' => false,
-                'workflows' => array(),
-            ),
-            'php_errors' => array(
+                'workflows' => [],
+            ],
+            'php_errors' => [
                 'log' => true,
                 'throw' => true,
-            ),
-            'web_link' => array(
+            ],
+            'web_link' => [
                 'enabled' => !class_exists(FullStack::class),
-            ),
-            'lock' => array(
+            ],
+            'lock' => [
                 'enabled' => !class_exists(FullStack::class),
-                'resources' => array(
-                    'default' => array(
+                'resources' => [
+                    'default' => [
                         class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphore' : 'flock',
-                    ),
-                ),
-            ),
-            'messenger' => array(
+                    ],
+                ],
+            ],
+            'messenger' => [
                 'enabled' => !class_exists(FullStack::class) && interface_exists(MessageBusInterface::class),
-                'routing' => array(),
-                'transports' => array(),
-                'serializer' => array(
+                'routing' => [],
+                'transports' => [],
+                'serializer' => [
                     'id' => !class_exists(FullStack::class) && class_exists(Serializer::class) ? 'messenger.transport.symfony_serializer' : null,
                     'format' => 'json',
-                    'context' => array(),
-                ),
+                    'context' => [],
+                ],
                 'default_bus' => null,
-                'buses' => array('messenger.bus.default' => array('default_middleware' => true, 'middleware' => array())),
-            ),
-        );
+                'buses' => ['messenger.bus.default' => ['default_middleware' => true, 'middleware' => []]],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_amqp_transport_no_serializer.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_amqp_transport_no_serializer.php
index 6c9ce5fc0a1a..10d31660f90b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_amqp_transport_no_serializer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_amqp_transport_no_serializer.php
@@ -1,10 +1,10 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'messenger' => array(
+$container->loadFromExtension('framework', [
+    'messenger' => [
         'serializer' => false,
-        'transports' => array(
+        'transports' => [
             'default' => 'amqp://localhost/%2f/messages',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_multiple_buses.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_multiple_buses.php
index f500ff957391..627e21f3084e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_multiple_buses.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_multiple_buses.php
@@ -1,22 +1,22 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'messenger' => array(
+$container->loadFromExtension('framework', [
+    'messenger' => [
         'default_bus' => 'messenger.bus.commands',
-        'buses' => array(
+        'buses' => [
             'messenger.bus.commands' => null,
-            'messenger.bus.events' => array(
-                'middleware' => array(
-                    array('with_factory' => array('foo', true, array('bar' => 'baz'))),
-                ),
-            ),
-            'messenger.bus.queries' => array(
+            'messenger.bus.events' => [
+                'middleware' => [
+                    ['with_factory' => ['foo', true, ['bar' => 'baz']]],
+                ],
+            ],
+            'messenger.bus.queries' => [
                 'default_middleware' => false,
-                'middleware' => array(
+                'middleware' => [
                     'send_message',
                     'handle_message',
-                ),
-            ),
-        ),
-    ),
-));
+                ],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_routing.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_routing.php
index 60b68f1fdb3e..08aae8f27d76 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_routing.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_routing.php
@@ -1,19 +1,19 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'serializer' => true,
-    'messenger' => array(
+    'messenger' => [
         'serializer' => 'messenger.transport.symfony_serializer',
-        'routing' => array(
-            'Symfony\Component\Messenger\Tests\Fixtures\DummyMessage' => array('amqp', 'audit'),
-            'Symfony\Component\Messenger\Tests\Fixtures\SecondMessage' => array(
-                'senders' => array('amqp', 'audit'),
+        'routing' => [
+            'Symfony\Component\Messenger\Tests\Fixtures\DummyMessage' => ['amqp', 'audit'],
+            'Symfony\Component\Messenger\Tests\Fixtures\SecondMessage' => [
+                'senders' => ['amqp', 'audit'],
                 'send_and_handle' => true,
-            ),
+            ],
             '*' => 'amqp',
-        ),
-        'transports' => array(
+        ],
+        'transports' => [
             'amqp' => 'amqp://localhost/%2f/messages',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport.php
index 728a1a910c14..cab5efe30a63 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport.php
@@ -1,15 +1,15 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'serializer' => true,
-    'messenger' => array(
-        'serializer' => array(
+    'messenger' => [
+        'serializer' => [
             'id' => 'messenger.transport.symfony_serializer',
             'format' => 'csv',
-            'context' => array('enable_max_depth' => true),
-        ),
-        'transports' => array(
+            'context' => ['enable_max_depth' => true],
+        ],
+        'transports' => [
             'default' => 'amqp://localhost/%2f/messages',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport_no_serializer.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport_no_serializer.php
index f861e2569080..7580c3c1e575 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport_no_serializer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transport_no_serializer.php
@@ -1,13 +1,13 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'serializer' => array(
+$container->loadFromExtension('framework', [
+    'serializer' => [
         'enabled' => false,
-    ),
-    'messenger' => array(
+    ],
+    'messenger' => [
         'serializer' => 'messenger.transport.symfony_serializer',
-        'transports' => array(
+        'transports' => [
             'default' => 'amqp://localhost/%2f/messages',
-        ),
-    ),
-));
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transports.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transports.php
index 4edc0d880a25..fd4b6feee71b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transports.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/messenger_transports.php
@@ -1,15 +1,15 @@
 <?php
 
-$container->loadFromExtension('framework', array(
+$container->loadFromExtension('framework', [
     'serializer' => true,
-    'messenger' => array(
+    'messenger' => [
         'serializer' => 'messenger.transport.symfony_serializer',
-        'transports' => array(
+        'transports' => [
             'default' => 'amqp://localhost/%2f/messages',
-            'customised' => array(
+            'customised' => [
                 'dsn' => 'amqp://localhost/%2f/messages?exchange_name=exchange_name',
-                'options' => array('queue' => array('name' => 'Queue')),
-            ),
-        ),
-    ),
-));
+                'options' => ['queue' => ['name' => 'Queue']],
+            ],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
index dedd090beb77..937a07c2255c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/serializer_disabled.php
@@ -1,7 +1,7 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'serializer' => array(
+$container->loadFromExtension('framework', [
+    'serializer' => [
         'enabled' => false,
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/session_cookie_secure_auto.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/session_cookie_secure_auto.php
index b23f2a5cd3bb..7259b07f9261 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/session_cookie_secure_auto.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/session_cookie_secure_auto.php
@@ -1,8 +1,8 @@
 <?php
 
-$container->loadFromExtension('framework', array(
-    'session' => array(
+$container->loadFromExtension('framework', [
+    'session' => [
         'handler_id' => null,
         'cookie_secure' => 'auto',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index 4a959568f48b..862786c9b8b8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -54,7 +54,7 @@
 
 abstract class FrameworkExtensionTest extends TestCase
 {
-    private static $containerCache = array();
+    private static $containerCache = [];
 
     abstract protected function loadFromFile(ContainerBuilder $container, $file);
 
@@ -96,13 +96,13 @@ public function testPropertyAccessCache()
         }
 
         $cache = $container->getDefinition('cache.property_access');
-        $this->assertSame(array(PropertyAccessor::class, 'createCache'), $cache->getFactory(), 'PropertyAccessor::createCache() should be used in non-debug mode');
+        $this->assertSame([PropertyAccessor::class, 'createCache'], $cache->getFactory(), 'PropertyAccessor::createCache() should be used in non-debug mode');
         $this->assertSame(AdapterInterface::class, $cache->getClass());
     }
 
     public function testPropertyAccessCacheWithDebug()
     {
-        $container = $this->createContainerFromFile('property_accessor', array('kernel.debug' => true));
+        $container = $this->createContainerFromFile('property_accessor', ['kernel.debug' => true]);
 
         if (!method_exists(PropertyAccessor::class, 'createCache')) {
             return $this->assertFalse($container->hasDefinition('cache.property_access'));
@@ -204,18 +204,18 @@ public function testWorkflows()
         $workflowDefinition = $container->getDefinition('workflow.article.definition');
 
         $this->assertSame(
-            array(
+            [
                 'draft',
                 'wait_for_journalist',
                 'approved_by_journalist',
                 'wait_for_spellchecker',
                 'approved_by_spellchecker',
                 'published',
-            ),
+            ],
             $workflowDefinition->getArgument(0),
             'Places are passed to the workflow definition'
         );
-        $this->assertSame(array('workflow.definition' => array(array('name' => 'article', 'type' => 'workflow', 'marking_store' => 'multiple_state'))), $workflowDefinition->getTags());
+        $this->assertSame(['workflow.definition' => [['name' => 'article', 'type' => 'workflow', 'marking_store' => 'multiple_state']]], $workflowDefinition->getTags());
         $this->assertCount(4, $workflowDefinition->getArgument(1));
         $this->assertSame('draft', $workflowDefinition->getArgument(2));
 
@@ -226,18 +226,18 @@ public function testWorkflows()
         $stateMachineDefinition = $container->getDefinition('state_machine.pull_request.definition');
 
         $this->assertSame(
-            array(
+            [
                 'start',
                 'coding',
                 'travis',
                 'review',
                 'merged',
                 'closed',
-            ),
+            ],
             $stateMachineDefinition->getArgument(0),
             'Places are passed to the state machine definition'
         );
-        $this->assertSame(array('workflow.definition' => array(array('name' => 'pull_request', 'type' => 'state_machine', 'marking_store' => 'single_state'))), $stateMachineDefinition->getTags());
+        $this->assertSame(['workflow.definition' => [['name' => 'pull_request', 'type' => 'state_machine', 'marking_store' => 'single_state']]], $stateMachineDefinition->getTags());
         $this->assertCount(9, $stateMachineDefinition->getArgument(1));
         $this->assertSame('start', $stateMachineDefinition->getArgument(2));
 
@@ -246,11 +246,11 @@ public function testWorkflows()
         $this->assertSame(Workflow\Metadata\InMemoryMetadataStore::class, $metadataStoreDefinition->getClass());
 
         $workflowMetadata = $metadataStoreDefinition->getArgument(0);
-        $this->assertSame(array('title' => 'workflow title'), $workflowMetadata);
+        $this->assertSame(['title' => 'workflow title'], $workflowMetadata);
 
         $placesMetadata = $metadataStoreDefinition->getArgument(1);
         $this->assertArrayHasKey('start', $placesMetadata);
-        $this->assertSame(array('title' => 'place start title'), $placesMetadata['start']);
+        $this->assertSame(['title' => 'place start title'], $placesMetadata['start']);
 
         $transitionsMetadata = $metadataStoreDefinition->getArgument(2);
         $this->assertSame(\SplObjectStorage::class, $transitionsMetadata->getClass());
@@ -322,60 +322,60 @@ public function testWorkflowMultipleTransitionsWithSameName()
         $this->assertCount(5, $transitions);
 
         $this->assertSame('workflow.article.transition.0', (string) $transitions[0]);
-        $this->assertSame(array(
+        $this->assertSame([
             'request_review',
-            array(
+            [
                 'draft',
-            ),
-            array(
+            ],
+            [
                 'wait_for_journalist', 'wait_for_spellchecker',
-            ),
-        ), $container->getDefinition($transitions[0])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[0])->getArguments());
 
         $this->assertSame('workflow.article.transition.1', (string) $transitions[1]);
-        $this->assertSame(array(
+        $this->assertSame([
             'journalist_approval',
-            array(
+            [
                 'wait_for_journalist',
-            ),
-            array(
+            ],
+            [
                 'approved_by_journalist',
-            ),
-        ), $container->getDefinition($transitions[1])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[1])->getArguments());
 
         $this->assertSame('workflow.article.transition.2', (string) $transitions[2]);
-        $this->assertSame(array(
+        $this->assertSame([
             'spellchecker_approval',
-            array(
+            [
                 'wait_for_spellchecker',
-            ),
-            array(
+            ],
+            [
                 'approved_by_spellchecker',
-            ),
-        ), $container->getDefinition($transitions[2])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[2])->getArguments());
 
         $this->assertSame('workflow.article.transition.3', (string) $transitions[3]);
-        $this->assertSame(array(
+        $this->assertSame([
             'publish',
-            array(
+            [
                 'approved_by_journalist',
                 'approved_by_spellchecker',
-            ),
-            array(
+            ],
+            [
                 'published',
-            ),
-        ), $container->getDefinition($transitions[3])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[3])->getArguments());
 
         $this->assertSame('workflow.article.transition.4', (string) $transitions[4]);
-        $this->assertSame(array(
+        $this->assertSame([
             'publish',
-            
10000
array(
+            [
                 'draft',
-            ),
-            array(
+            ],
+            [
                 'published',
-            ),
-        ), $container->getDefinition($transitions[4])->getArguments());
+            ],
+        ], $container->getDefinition($transitions[4])->getArguments());
     }
 
     public function testGuardExpressions()
@@ -386,12 +386,12 @@ public function testGuardExpressions()
         $this->assertTrue($container->hasParameter('workflow.has_guard_listeners'), 'Workflow guard listeners parameter exists');
         $this->assertTrue(true === $container->getParameter('workflow.has_guard_listeners'), 'Workflow guard listeners parameter is enabled');
         $guardDefinition = $container->getDefinition('workflow.article.listener.guard');
-        $this->assertSame(array(
-            array(
+        $this->assertSame([
+            [
                 'event' => 'workflow.article.guard.publish',
                 'method' => 'onTransition',
-            ),
-        ), $guardDefinition->getTag('kernel.event_listener'));
+            ],
+        ], $guardDefinition->getTag('kernel.event_listener'));
         $guardsConfiguration = $guardDefinition->getArgument(0);
         $this->assertTrue(1 === \count($guardsConfiguration), 'Workflow guard configuration contains one element per transition name');
         $transitionGuardExpressions = $guardsConfiguration['workflow.article.guard.publish'];
@@ -470,7 +470,7 @@ public function testRouterRequiresResourceOption()
     {
         $container = $this->createContainer();
         $loader = new FrameworkExtension();
-        $loader->load(array(array('router' => true)), $container);
+        $loader->load([['router' => true]], $container);
     }
 
     public function testSession()
@@ -505,7 +505,7 @@ public function testNullSessionHandler()
         $this->assertNull($container->getDefinition('session.storage.native')->getArgument(1));
         $this->assertNull($container->getDefinition('session.storage.php_bridge')->getArgument(0));
 
-        $expected = array('session', 'initialized_session');
+        $expected = ['session', 'initialized_session'];
         $this->assertEquals($expected, array_keys($container->getDefinition('session_listener')->getArgument(0)->getValues()));
     }
 
@@ -515,7 +515,7 @@ public function testRequest()
 
         $this->assertTrue($container->hasDefinition('request.add_request_formats_listener'), '->registerRequestConfiguration() loads request.xml');
         $listenerDef = $container->getDefinition('request.add_request_formats_listener');
-        $this->assertEquals(array('csv' => array('text/csv', 'text/plain'), 'pdf' => array('application/pdf')), $listenerDef->getArgument(0));
+        $this->assertEquals(['csv' => ['text/csv', 'text/plain'], 'pdf' => ['application/pdf']], $listenerDef->getArgument(0));
     }
 
     public function testEmptyRequestFormats()
@@ -540,9 +540,9 @@ public function testTemplating()
         $this->assertEquals('%templating.loader.cache.path%', $container->getDefinition('templating.loader.cache')->getArgument(1));
         $this->assertEquals('/path/to/cache', $container->getParameter('templating.loader.cache.path'));
 
-        $this->assertEquals(array('php', 'twig'), $container->getParameter('templating.engines'), '->registerTemplatingConfiguration() sets a templating.engines parameter');
+        $this->assertEquals(['php', 'twig'], $container->getParameter('templating.engines'), '->registerTemplatingConfiguration() sets a templating.engines parameter');
 
-        $this->assertEquals(array('FrameworkBundle:Form', 'theme1', 'theme2'), $container->getParameter('templating.helper.form.resources'), '->registerTemplatingConfiguration() registers the theme and adds the base theme');
+        $this->assertEquals(['FrameworkBundle:Form', 'theme1', 'theme2'], $container->getParameter('templating.helper.form.resources'), '->registerTemplatingConfiguration() registers the theme and adds the base theme');
         $this->assertEquals('global_hinclude_template', $container->getParameter('fragment.renderer.hinclude.global_template'), '->registerTemplatingConfiguration() registers the global hinclude.js template');
     }
 
@@ -560,7 +560,7 @@ public function testAssets()
 
         // default package
         $defaultPackage = $container->getDefinition((string) $packages->getArgument(0));
-        $this->assertUrlPackage($container, $defaultPackage, array('http://cdn.example.com'), 'SomeVersionScheme', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $defaultPackage, ['http://cdn.example.com'], 'SomeVersionScheme', '%%s?version=%%s');
 
         // packages
         $packages = $packages->getArgument(1);
@@ -570,13 +570,13 @@ public function testAssets()
         $this->assertPathPackage($container, $package, '/foo', 'SomeVersionScheme', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['images']);
-        $this->assertUrlPackage($container, $package, array('http://images1.example.com', 'http://images2.example.com'), '1.0.0', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $package, ['http://images1.example.com', 'http://images2.example.com'], '1.0.0', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['foo']);
         $this->assertPathPackage($container, $package, '', '1.0.0', '%%s-%%s');
 
         $package = $container->getDefinition((string) $packages['bar']);
-        $this->assertUrlPackage($container, $package, array('https://bar2.example.com'), 'SomeVersionScheme', '%%s?version=%%s');
+        $this->assertUrlPackage($container, $package, ['https://bar2.example.com'], 'SomeVersionScheme', '%%s?version=%%s');
 
         $package = $container->getDefinition((string) $packages['bar_version_strategy']);
         $this->assertEquals('assets.custom_version_strategy', (string) $package->getArgument(1));
@@ -625,16 +625,16 @@ public function testMessengerTransports()
         $container = $this->createContainerFromFile('messenger_transports');
         $this->assertTrue($container->hasDefinition('messenger.transport.default'));
         $this->assertTrue($container->getDefinition('messenger.transport.default')->hasTag('messenger.receiver'));
-        $this->assertEquals(array(array('alias' => 'default')), $container->getDefinition('messenger.transport.default')->getTag('messenger.receiver'));
+        $this->assertEquals([['alias' => 'default']], $container->getDefinition('messenger.transport.default')->getTag('messenger.receiver'));
 
         $this->assertTrue($container->hasDefinition('messenger.transport.customised'));
         $transportFactory = $container->getDefinition('messenger.transport.customised')->getFactory();
         $transportArguments = $container->getDefinition('messenger.transport.customised')->getArguments();
 
-        $this->assertEquals(array(new Reference('messenger.transport_factory'), 'createTransport'), $transportFactory);
+        $this->assertEquals([new Reference('messenger.transport_factory'), 'createTransport'], $transportFactory);
         $this->assertCount(2, $transportArguments);
         $this->assertSame('amqp://localhost/%2f/messages?exchange_name=exchange_name', $transportArguments[0]);
-        $this->assertSame(array('queue' => array('name' => 'Queue')), $transportArguments[1]);
+        $this->assertSame(['queue' => ['name' => 'Queue']], $transportArguments[1]);
 
         $this->assertTrue($container->hasDefinition('messenger.transport.amqp.factory'));
     }
@@ -644,18 +644,18 @@ public function testMessengerRouting()
         $container = $this->createContainerFromFile('messenger_routing');
         $senderLocatorDefinition = $container->getDefinition('messenger.senders_locator');
 
-        $messageToSendAndHandleMapping = array(
+        $messageToSendAndHandleMapping = [
             DummyMessage::class => false,
             SecondMessage::class => true,
             '*' => false,
-        );
+        ];
 
         $this->assertSame($messageToSendAndHandleMapping, $senderLocatorDefinition->getArgument(1));
         $sendersMapping = $senderLocatorDefinition->getArgument(0);
-        $this->assertEquals(array(
+        $this->assertEquals([
             'amqp' => new Reference('messenger.transport.amqp'),
             'audit' => new Reference('audit'),
-        ), $sendersMapping[DummyMessage::class]->getValues());
+        ], $sendersMapping[DummyMessage::class]->getValues());
     }
 
     /**
@@ -684,7 +684,7 @@ public function testMessengerTransportConfiguration()
 
         $serializerTransportDefinition = $container->getDefinition('messenger.transport.symfony_serializer');
         $this->assertSame('csv', $serializerTransportDefinition->getArgument(1));
-        $this->assertSame(array('enable_max_depth' => true), $serializerTransportDefinition->getArgument(2));
+        $this->assertSame(['enable_max_depth' => true], $serializerTransportDefinition->getArgument(2));
     }
 
     public function testMessengerWithMultipleBuses()
@@ -692,26 +692,26 @@ public function testMessengerWithMultipleBuses()
         $container = $this->createContainerFromFile('messenger_multiple_buses');
 
         $this->assertTrue($container->has('messenger.bus.commands'));
-        $this->assertSame(array(), $container->getDefinition('messenger.bus.commands')->getArgument(0));
-        $this->assertEquals(array(
-            array('id' => 'logging'),
-            array('id' => 'send_message'),
-            array('id' => 'handle_message'),
-        ), $container->getParameter('messenger.bus.commands.middleware'));
+        $this->assertSame([], $container->getDefinition('messenger.bus.commands')->getArgument(0));
+        $this->assertEquals([
+            ['id' => 'logging'],
+            ['id' => 'send_message'],
+            ['id' => 'handle_message'],
+        ], $container->getParameter('messenger.bus.commands.middleware'));
         $this->assertTrue($container->has('messenger.bus.events'));
-        $this->assertSame(array(), $container->getDefinition('messenger.bus.events')->getArgument(0));
-        $this->assertEquals(array(
-            array('id' => 'logging'),
-            array('id' => 'with_factory', 'arguments' => array('foo', true, array('bar' => 'baz'))),
-            array('id' => 'send_message'),
-            array('id' => 'handle_message'),
-        ), $container->getParameter('messenger.bus.events.middleware'));
+        $this->assertSame([], $container->getDefinition('messenger.bus.events')->getArgument(0));
+        $this->assertEquals([
+            ['id' => 'logging'],
+            ['id' => 'with_factory', 'arguments' => ['foo', true, ['bar' => 'baz']]],
+            ['id' => 'send_message'],
+            ['id' => 'handle_message'],
+        ], $container->getParameter('messenger.bus.events.middleware'));
         $this->assertTrue($container->has('messenger.bus.queries'));
-        $this->assertSame(array(), $container->getDefinition('messenger.bus.queries')->getArgument(0));
-        $this->assertEquals(array(
-            array('id' => 'send_message', 'arguments' => array()),
-            array('id' => 'handle_message', 'arguments' => array()),
-        ), $container->getParameter('messenger.bus.queries.middleware'));
+        $this->assertSame([], $container->getDefinition('messenger.bus.queries')->getArgument(0));
+        $this->assertEquals([
+            ['id' => 'send_message', 'arguments' => []],
+            ['id' => 'handle_message', 'arguments' => []],
+        ], $container->getParameter('messenger.bus.queries.middleware'));
 
         $this->assertTrue($container->hasAlias('message_bus'));
         $this->assertSame('messenger.bus.commands', (string) $container->getAlias('message_bus'));
@@ -764,7 +764,7 @@ public function testTranslator()
         );
 
         $calls = $container->getDefinition('translator.default')->getMethodCalls();
-        $this->assertEquals(array('fr'), $calls[1][1][0]);
+        $this->assertEquals(['fr'], $calls[1][1][0]);
     }
 
     /**
@@ -773,7 +773,7 @@ public function testTranslator()
      */
     public function testLegacyTranslationsDirectory()
     {
-        $container = $this->createContainerFromFile('full', array('kernel.root_dir' => __DIR__.'/Fixtures'));
+        $container = $this->createContainerFromFile('full', ['kernel.root_dir' => __DIR__.'/Fixtures']);
         $options = $container->getDefinition('translator.default')->getArgument(4);
         $files = array_map('realpath', $options['resource_files']['en']);
 
@@ -786,7 +786,7 @@ public function testTranslatorMultipleFallbacks()
         $container = $this->createContainerFromFile('translator_fallbacks');
 
         $calls = $container->getDefinition('translator.default')->getMethodCalls();
-        $this->assertEquals(array('en', 'fr'), $calls[1][1][0]);
+        $this->assertEquals(['en', 'fr'], $calls[1][1][0]);
     }
 
     /**
@@ -796,7 +796,7 @@ public function testTemplatingRequiresAtLeastOneEngine()
     {
         $container = $this->createContainer();
         $loader = new FrameworkExtension();
-        $loader->load(array(array('templating' => null)), $container);
+        $loader->load([['templating' => null]], $container);
     }
 
     public function testValidation()
@@ -805,10 +805,10 @@ public function testValidation()
         $projectDir = $container->getParameter('kernel.project_dir');
 
         $ref = new \ReflectionClass('Symfony\Component\Form\Form');
-        $xmlMappings = array(
+        $xmlMappings = [
             \dirname($ref->getFileName()).'/Resources/config/validation.xml',
             strtr($projectDir.'/config/validator/foo.xml', '/', \DIRECTORY_SEPARATOR),
-        );
+        ];
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
 
@@ -816,33 +816,33 @@ public function testValidation()
 
         $this->assertCount($annotations ? 7 : 6, $calls);
         $this->assertSame('setConstraintValidatorFactory', $calls[0][0]);
-        $this->assertEquals(array(new Reference('validator.validator_factory')), $calls[0][1]);
+        $this->assertEquals([new Reference('validator.validator_factory')], $calls[0][1]);
         $this->assertSame('setTranslator', $calls[1][0]);
-        $this->assertEquals(array(new Reference('translator')), $calls[1][1]);
+        $this->assertEquals([new Reference('translator')], $calls[1][1]);
         $this->assertSame('setTranslationDomain', $calls[2][0]);
-        $this->assertSame(array('%validator.translation_domain%'), $calls[2][1]);
+        $this->assertSame(['%validator.translation_domain%'], $calls[2][1]);
         $this->assertSame('addXmlMappings', $calls[3][0]);
-        $this->assertSame(array($xmlMappings), $calls[3][1]);
+        $this->assertSame([$xmlMappings], $calls[3][1]);
         $i = 3;
         if ($annotations) {
             $this->assertSame('enableAnnotationMapping', $calls[++$i][0]);
         }
         $this->assertSame('addMethodMapping', $calls[++$i][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[$i][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[$i][1]);
         $this->assertSame('setMetadataCache', $calls[++$i][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[$i][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[$i][1]);
     }
 
     public function testValidationService()
     {
-        $container = $this->createContainerFromFile('validation_annotations', array('kernel.charset' => 'UTF-8'), false);
+        $container = $this->createContainerFromFile('validation_annotations', ['kernel.charset' => 'UTF-8'], false);
 
         $this->assertInstanceOf('Symfony\Component\Validator\Validator\ValidatorInterface', $container->get('validator'));
     }
 
     public function testAnnotations()
     {
-        $container = $this->createContainerFromFile('full', array(), true, false);
+        $container = $this->createContainerFromFile('full', [], true, false);
         $container->addCompilerPass(new TestAnnotationsPass());
         $container->compile();
 
@@ -869,11 +869,11 @@ public function testValidationAnnotations()
 
         $this->assertCount(7, $calls);
         $this->assertSame('enableAnnotationMapping', $calls[4][0]);
-        $this->assertEquals(array(new Reference('annotation_reader')), $calls[4][1]);
+        $this->assertEquals([new Reference('annotation_reader')], $calls[4][1]);
         $this->assertSame('addMethodMapping', $calls[5][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[5][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[5][1]);
         $this->assertSame('setMetadataCache', $calls[6][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[6][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[6][1]);
         // no cache this time
     }
 
@@ -881,10 +881,10 @@ public function testValidationPaths()
     {
         require_once __DIR__.'/Fixtures/TestBundle/TestBundle.php';
 
-        $container = $this->createContainerFromFile('validation_annotations', array(
-            'kernel.bundles' => array('TestBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\TestBundle'),
-            'kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle')),
-        ));
+        $container = $this->createContainerFromFile('validation_annotations', [
+            'kernel.bundles' => ['TestBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\TestBundle'],
+            'kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle']],
+        ]);
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
 
@@ -893,9 +893,9 @@ public function testValidationPaths()
         $this->assertSame('addYamlMappings', $calls[4][0]);
         $this->assertSame('enableAnnotationMapping', $calls[5][0]);
         $this->assertSame('addMethodMapping', $calls[6][0]);
-        $this->assertSame(array('loadValidatorMetadata'), $calls[6][1]);
+        $this->assertSame(['loadValidatorMetadata'], $calls[6][1]);
         $this->assertSame('setMetadataCache', $calls[7][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[7][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[7][1]);
 
         $xmlMappings = $calls[3][1][0];
         $this->assertCount(3, $xmlMappings);
@@ -917,10 +917,10 @@ public function testValidationPathsUsingCustomBundlePath()
     {
         require_once __DIR__.'/Fixtures/CustomPathBundle/src/CustomPathBundle.php';
 
-        $container = $this->createContainerFromFile('validation_annotations', array(
-            'kernel.bundles' => array('CustomPathBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\CustomPathBundle'),
-            'kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/CustomPathBundle')),
-        ));
+        $container = $this->createContainerFromFile('validation_annotations', [
+            'kernel.bundles' => ['CustomPathBundle' => 'Symfony\\Bundle\\FrameworkBundle\\Tests\\CustomPathBundle'],
+            'kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/CustomPathBundle']],
+        ]);
 
         $calls = $container->getDefinition('validator.builder')->getMethodCalls();
         $xmlMappings = $calls[3][1][0];
@@ -955,7 +955,7 @@ public function testValidationNoStaticMethod()
             $this->assertSame('enableAnnotationMapping', $calls[++$i][0]);
         }
         $this->assertSame('setMetadataCache', $calls[++$i][0]);
-        $this->assertEquals(array(new Reference('validator.mapping.cache.symfony')), $calls[$i][1]);
+        $this->assertEquals([new Reference('validator.mapping.cache.symfony')], $calls[$i][1]);
         // no cache, no annotations, no static methods
     }
 
@@ -1031,19 +1031,19 @@ public function testFormsCanBeEnabledWithoutCsrfProtection()
 
     public function testStopwatchEnabledWithDebugModeEnabled()
     {
-        $container = $this->createContainerFromFile('default_config', array(
+        $container = $this->createContainerFromFile('default_config', [
             'kernel.container_class' => 'foo',
             'kernel.debug' => true,
-        ));
+        ]);
 
         $this->assertTrue($container->has('debug.stopwatch'));
     }
 
     public function testStopwatchEnabledWithDebugModeDisabled()
     {
-        $container = $this->createContainerFromFile('default_config', array(
+        $container = $this->createContainerFromFile('default_config', [
             'kernel.container_class' => 'foo',
-        ));
+        ]);
 
         $this->assertTrue($container->has('debug.stopwatch'));
     }
@@ -1066,8 +1066,8 @@ public function testSerializerEnabled()
         $this->assertNull($container->getDefinition('serializer.mapping.class_metadata_factory')->getArgument(1));
         $this->assertEquals(new Reference('serializer.name_converter.camel_case_to_snake_case'), $container->getDefinition('serializer.name_converter.metadata_aware')->getArgument(1));
         $this->assertEquals(new Reference('property_info', ContainerBuilder::IGNORE_ON_INVALID_REFERENCE), $container->getDefinition('serializer.normalizer.object')->getArgument(3));
-        $this->assertEquals(array('setCircularReferenceHandler', array(new Reference('my.circular.reference.handler'))), $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[0]);
-        $this->assertEquals(array('setMaxDepthHandler', array(new Reference('my.max.depth.handler'))), $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[1]);
+        $this->assertEquals(['setCircularReferenceHandler', [new Reference('my.circular.reference.handler')]], $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[0]);
+        $this->assertEquals(['setMaxDepthHandler', [new Reference('my.max.depth.handler')]], $container->getDefinition('serializer.normalizer.object')->getMethodCalls()[1]);
     }
 
     public function testRegisterSerializerExtractor()
@@ -1079,7 +1079,7 @@ public function testRegisterSerializerExtractor()
         $this->assertEquals('serializer.mapping.class_metadata_factory', $serializerExtractorDefinition->getArgument(0)->__toString());
         $this->assertFalse($serializerExtractorDefinition->isPublic());
         $tag = $serializerExtractorDefinition->getTag('property_info.list_extractor');
-        $this->assertEquals(array('priority' => -999), $tag[0]);
+        $this->assertEquals(['priority' => -999], $tag[0]);
     }
 
     public function testDataUriNormalizerRegistered()
@@ -1153,25 +1153,25 @@ public function testSerializerCacheActivated()
 
     public function testSerializerCacheDisabled()
     {
-        $container = $this->createContainerFromFile('serializer_enabled', array('kernel.debug' => true, 'kernel.container_class' => __CLASS__));
+        $container = $this->createContainerFromFile('serializer_enabled', ['kernel.debug' => true, 'kernel.container_class' => __CLASS__]);
         $this->assertFalse($container->hasDefinition('serializer.mapping.cache_class_metadata_factory'));
     }
 
     public function testSerializerMapping()
     {
-        $container = $this->createContainerFromFile('serializer_mapping', array('kernel.bundles_metadata' => array('TestBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle'))));
+        $container = $this->createContainerFromFile('serializer_mapping', ['kernel.bundles_metadata' => ['TestBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle\\Tests', 'path' => __DIR__.'/Fixtures/TestBundle']]]);
         $projectDir = $container->getParameter('kernel.project_dir');
         $configDir = __DIR__.'/Fixtures/TestBundle/Resources/config';
-        $expectedLoaders = array(
-            new Definition(AnnotationLoader::class, array(new Reference('annotation_reader'))),
-            new Definition(XmlFileLoader::class, array($configDir.'/serialization.xml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serialization.yml')),
-            new Definition(YamlFileLoader::class, array($projectDir.'/config/serializer/foo.yml')),
-            new Definition(XmlFileLoader::class, array($configDir.'/serializer_mapping/files/foo.xml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/files/foo.yml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/serialization.yml')),
-            new Definition(YamlFileLoader::class, array($configDir.'/serializer_mapping/serialization.yaml')),
-        );
+        $expectedLoaders = [
+            new Definition(AnnotationLoader::class, [new Reference('annotation_reader')]),
+            new Definition(XmlFileLoader::class, [$configDir.'/serialization.xml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serialization.yml']),
+            new Definition(YamlFileLoader::class, [$projectDir.'/config/serializer/foo.yml']),
+            new Definition(XmlFileLoader::class, [$configDir.'/serializer_mapping/files/foo.xml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/files/foo.yml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/serialization.yml']),
+            new Definition(YamlFileLoader::class, [$configDir.'/serializer_mapping/serialization.yaml']),
+        ];
 
         foreach ($expectedLoaders as $definition) {
             if (is_file($arg = $definition->getArgument(0))) {
@@ -1241,9 +1241,9 @@ public function testPropertyInfoEnabled()
 
     public function testEventDispatcherService()
     {
-        $container = $this->createContainer(array('kernel.charset' => 'UTF-8', 'kernel.secret' => 'secret'));
+        $container = $this->createContainer(['kernel.charset' => 'UTF-8', 'kernel.secret' => 'secret']);
         $container->registerExtension(new FrameworkExtension());
-        $container->getCompilerPassConfig()->setBeforeOptimizationPasses(array(new LoggerPass()));
+        $container->getCompilerPassConfig()->setBeforeOptimizationPasses([new LoggerPass()]);
         $this->loadFromFile($container, 'default_config');
         $container
             ->register('foo', \stdClass::class)
@@ -1294,18 +1294,18 @@ public function testCachePoolServices()
 
     public function testRemovesResourceCheckerConfigCacheFactoryArgumentOnlyIfNoDebug()
     {
-        $container = $this->createContainer(array('kernel.debug' => true));
-        (new FrameworkExtension())->load(array(), $container);
+        $container = $this->createContainer(['kernel.debug' => true]);
+        (new FrameworkExtension())->load([], $container);
         $this->assertCount(1, $container->getDefinition('config_cache_factory')->getArguments());
 
-        $container = $this->createContainer(array('kernel.debug' => false));
-        (new FrameworkExtension())->load(array(), $container);
+        $container = $this->createContainer(['kernel.debug' => false]);
+        (new FrameworkExtension())->load([], $container);
         $this->assertEmpty($container->getDefinition('config_cache_factory')->getArguments());
     }
 
     public function testLoggerAwareRegistration()
     {
-        $container = $this->createContainerFromFile('full', array(), true, false);
+        $container = $this->createContainerFromFile('full', [], true, false);
         $container->addCompilerPass(new ResolveInstanceofConditionalsPass());
         $container->register('foo', LoggerAwareInterface::class)
             ->setAutoconfigured(true);
@@ -1323,15 +1323,15 @@ public function testSessionCookieSecureAuto()
     {
         $container = $this->createContainerFromFile('session_cookie_secure_auto');
 
-        $expected = array('session', 'initialized_session', 'session_storage', 'request_stack');
+        $expected = ['session', 'initialized_session', 'session_storage', 'request_stack'];
         $this->assertEquals($expected, array_keys($container->getDefinition('session_listener')->getArgument(0)->getValues()));
     }
 
-    protected function createContainer(array $data = array())
+    protected function createContainer(array $data = [])
     {
-        return new ContainerBuilder(new ParameterBag(array_merge(array(
-            'kernel.bundles' => array('FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'),
-            'kernel.bundles_metadata' => array('FrameworkBundle' => array('namespace' => 'Symfony\\Bundle\\FrameworkBundle', 'path' => __DIR__.'/../..')),
+        return new ContainerBuilder(new ParameterBag(array_merge([
+            'kernel.bundles' => ['FrameworkBundle' => 'Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'],
+            'kernel.bundles_metadata' => ['FrameworkBundle' => ['namespace' => 'Symfony\\Bundle\\FrameworkBundle', 'path' => __DIR__.'/../..']],
             'kernel.cache_dir' => __DIR__,
             'kernel.project_dir' => __DIR__,
             'kernel.debug' => false,
@@ -1342,10 +1342,10 @@ protected function createContainer(array $data = array())
             'container.build_hash' => 'Abc1234',
             'container.build_id' => hash('crc32', 'Abc123423456789'),
             'container.build_time' => 23456789,
-        ), $data)));
+        ], $data)));
     }
 
-    protected function createContainerFromFile($file, $data = array(), $resetCompilerPasses = true, $compile = true)
+    protected function createContainerFromFile($file, $data = [], $resetCompilerPasses = true, $compile = true)
     {
         $cacheKey = md5(\get_class($this).$file.serialize($data));
         if ($compile && isset(self::$containerCache[$cacheKey])) {
@@ -1356,12 +1356,12 @@ protected function createContainerFromFile($file, $data = array(), $resetCompile
         $this->loadFromFile($container, $file);
 
         if ($resetCompilerPasses) {
-            $container->getCompilerPassConfig()->setOptimizationPasses(array());
-            $container->getCompilerPassConfig()->setRemovingPasses(array());
+            $container->getCompilerPassConfig()->setOptimizationPasses([]);
+            $container->getCompilerPassConfig()->setRemovingPasses([]);
         }
-        $container->getCompilerPassConfig()->setBeforeOptimizationPasses(array(new LoggerPass()));
-        $container->getCompilerPassConfig()->setBeforeRemovingPasses(array(new AddConstraintValidatorsPass(), new TranslatorPass('translator.default', 'translation.reader')));
-        $container->getCompilerPassConfig()->setAfterRemovingPasses(array(new AddAnnotationsCachedReaderPass()));
+        $container->getCompilerPassConfig()->setBeforeOptimizationPasses([new LoggerPass()]);
+        $container->getCompilerPassConfig()->setBeforeRemovingPasses([new AddConstraintValidatorsPass(), new TranslatorPass('translator.default', 'translation.reader')]);
+        $container->getCompilerPassConfig()->setAfterRemovingPasses([new AddAnnotationsCachedReaderPass()]);
 
         if (!$compile) {
             return $container;
@@ -1371,15 +1371,15 @@ protected function createContainerFromFile($file, $data = array(), $resetCompile
         return self::$containerCache[$cacheKey] = $container;
     }
 
-    protected function createContainerFromClosure($closure, $data = array())
+    protected function createContainerFromClosure($closure, $data = [])
     {
         $container = $this->createContainer($data);
         $container->registerExtension(new FrameworkExtension());
         $loader = new ClosureLoader($container);
         $loader->load($closure);
 
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         return $container;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
index e34a30af2a62..93028bf8c227 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/ContainerDebugCommandTest.php
@@ -70,21 +70,21 @@ public function testPrivateAlias()
      */
     public function testIgnoreBackslashWhenFindingService(string $validServiceId)
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:container', 'name' => $validServiceId));
+        $tester->run(['command' => 'debug:container', 'name' => $validServiceId]);
         $this->assertNotContains('No services found', $tester->getDisplay());
     }
 
     public function provideIgnoreBackslashWhenFindingService()
     {
-        return array(
-            array(BackslashClass::class),
-            array('FixturesBackslashClass'),
-        );
+        return [
+            [BackslashClass::class],
+            ['FixturesBackslashClass'],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutowiringCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutowiringCommandTest.php
index eccecc9d5de9..1c64fbe6eeb5 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutowiringCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutowiringCommandTest.php
@@ -49,13 +49,13 @@ public function testSearchArgument()
 
     public function testSearchIgnoreBackslashWhenFindingService()
     {
-        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+        static::bootKernel(['test_case' => 'ContainerDebug', 'root_config' => 'config.yml']);
 
         $application = new Application(static::$kernel);
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'debug:autowiring', 'search' => 'HttpKernelHttpKernelInterface'));
+        $tester->run(['command' => 'debug:autowiring', 'search' => 'HttpKernelHttpKernelInterface']);
         $this->assertContains('Symfony\Component\HttpKernel\HttpKernelInterface', $tester->getDisplay());
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/DelegatingLoaderTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/DelegatingLoaderTest.php
index b382f55a0397..1d576056ebf8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/DelegatingLoaderTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Routing/DelegatingLoaderTest.php
@@ -39,29 +39,29 @@ public function testLoadDefaultOptions()
             ->willReturn($loader);
 
         $routeCollection = new RouteCollection();
-        $routeCollection->add('foo', new Route('/', array(), array(), array('utf8' => false)));
-        $routeCollection->add('bar', new Route('/', array(), array(), array('foo' => 123)));
+        $routeCollection->add('foo', new Route('/', [], [], ['utf8' => false]));
+        $routeCollection->add('bar', new Route('/', [], [], ['foo' => 123]));
 
         $loader->expects($this->once())
             ->method('load')
             ->willReturn($routeCollection);
 
-        $delegatingLoader = new DelegatingLoader($controllerNameParser, $loaderResolver, array('utf8' => true));
+        $delegatingLoader = new DelegatingLoader($controllerNameParser, $loaderResolver, ['utf8' => true]);
 
         $loadedRouteCollection = $delegatingLoader->load('foo');
         $this->assertCount(2, $loadedRouteCollection);
 
-        $expected = array(
+        $expected = [
             'compiler_class' => 'Symfony\Component\Routing\RouteCompiler',
             'utf8' => false,
-        );
+        ];
         $this->assertSame($expected, $routeCollection->get('foo')->getOptions());
 
-        $expected = array(
+        $expected = [
             'compiler_class' => 'Symfony\Component\Routing\RouteCompiler',
             'foo' => 123,
             'utf8' => true,
-        );
+        ];
         $this->assertSame($expected, $routeCollection->get('bar')->getOptions());
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Fixtures/StubTranslator.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Fixtures/StubTranslator.php
index 377a67d6be83..9175b371156f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Fixtures/StubTranslator.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Fixtures/StubTranslator.php
@@ -15,7 +15,7 @@
 
 class StubTranslator implements TranslatorInterface
 {
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         return '[trans]'.$id.'[/trans]';
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperDivLayoutTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperDivLayoutTest.php
index b74bc801cd4a..b00b6a10e533 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperDivLayoutTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperDivLayoutTest.php
@@ -35,19 +35,19 @@ protected function getExtensions()
         $root = realpath(\dirname($reflClass->getFileName()).'/Resources/views');
         $rootTheme = realpath(__DIR__.'/Resources');
         $templateNameParser = new StubTemplateNameParser($root, $rootTheme);
-        $loader = new FilesystemLoader(array());
+        $loader = new FilesystemLoader([]);
 
         $this->engine = new PhpEngine($templateNameParser, $loader);
         $this->engine->addGlobal('global', '');
-        $this->engine->setHelpers(array(
+        $this->engine->setHelpers([
             new TranslatorHelper(new StubTranslator()),
-        ));
+        ]);
 
-        return array_merge(parent::getExtensions(), array(
-            new TemplatingExtension($this->engine, $this->csrfTokenManager, array(
+        return array_merge(parent::getExtensions(), [
+            new TemplatingExtension($this->engine, $this->csrfTokenManager, [
                 'FrameworkBundle:Form',
-            )),
-        ));
+            ]),
+        ]);
     }
 
     protected function tearDown()
@@ -59,10 +59,10 @@ protected function tearDown()
 
     public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -71,10 +71,10 @@ public function testStartTagHasNoActionAttributeWhenActionIsEmpty()
 
     public function testStartTagHasActionAttributeWhenActionIsZero()
     {
-        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, array(
+        $form = $this->factory->create('Symfony\Component\Form\Extension\Core\Type\FormType', null, [
             'method' => 'get',
             'action' => '0',
-        ));
+        ]);
 
         $html = $this->renderStart($form->createView());
 
@@ -95,12 +95,12 @@ public function testMoneyWidgetInIso()
 
     public function testHelpAttr()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-            'help_attr' => array(
+            'help_attr' => [
                 'class' => 'class-test',
-            ),
-        ));
+            ],
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
@@ -113,12 +113,12 @@ public function testHelpAttr()
         );
     }
 
-    protected function renderForm(FormView $view, array $vars = array())
+    protected function renderForm(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->form($view, $vars);
     }
 
-    protected function renderLabel(FormView $view, $label = null, array $vars = array())
+    protected function renderLabel(FormView $view, $label = null, array $vars = [])
     {
         return (string) $this->engine->get('form')->label($view, $label, $vars);
     }
@@ -133,27 +133,27 @@ protected function renderErrors(FormView $view)
         return (string) $this->engine->get('form')->errors($view);
     }
 
-    protected function renderWidget(FormView $view, array $vars = array())
+    protected function renderWidget(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->widget($view, $vars);
     }
 
-    protected function renderRow(FormView $view, array $vars = array())
+    protected function renderRow(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->row($view, $vars);
     }
 
-    protected function renderRest(FormView $view, array $vars = array())
+    protected function renderRest(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->rest($view, $vars);
     }
 
-    protected function renderStart(FormView $view, array $vars = array())
+    protected function renderStart(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->start($view, $vars);
     }
 
-    protected function renderEnd(FormView $view, array $vars = array())
+    protected function renderEnd(FormView $view, array $vars = [])
     {
         return (string) $this->engine->get('form')->end($view, $vars);
     }
@@ -165,15 +165,15 @@ protected function setTheme(FormView $view, array $themes, $useDefaultThemes = t
 
     public static function themeBlockInheritanceProvider()
     {
-        return array(
-            array(array('TestBundle:Parent')),
-        );
+        return [
+            [['TestBundle:Parent']],
+        ];
     }
 
     public static function themeInheritanceProvider()
     {
-        return array(
-            array(array('TestBundle:Parent'), array('TestBundle:Child')),
-        );
+        return [
+            [['TestBundle:Parent'], ['TestBundle:Child']],
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperTableLayoutTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperTableLayoutTest.php
index 741b9726de14..8b1bf4cbdd81 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperTableLayoutTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/FormHelperTableLayoutTest.php
@@ -53,12 +53,12 @@ public function testStartTagHasActionAttributeWhenActionIsZero()
 
     public function testHelpAttr()
     {
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, array(
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\TextType', null, [
             'help' => 'Help text test!',
-            'help_attr' => array(
+            'help_attr' => [
                 'class' => 'class-test',
-            ),
-        ));
+            ],
+        ]);
         $view = $form->createView();
         $html = $this->renderHelp($view);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
index 8a48fbebcf53..6b276ca0b9b0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
@@ -52,10 +52,10 @@ public function testTransWithoutCaching()
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
         $this->assertEquals('foobar (ES)', $translator->trans('foobar'));
-        $this->assertEquals('choice 0 (EN)', $translator->trans('choice', array('%count%' => 0)));
+        $this->assertEquals('choice 0 (EN)', $translator->trans('choice', ['%count%' => 0]));
         $this->assertEquals('no translation', $translator->trans('no translation'));
         $this->assertEquals('foobarfoo (PT-PT)', $translator->trans('foobarfoo'));
-        $this->assertEquals('other choice 1 (PT-BR)', $translator->trans('other choice', array('%count%' => 1)));
+        $this->assertEquals('other choice 1 (PT-BR)', $translator->trans('other choice', ['%count%' => 1]));
         $this->assertEquals('foobarbaz (fr.UTF-8)', $translator->trans('foobarbaz'));
         $this->assertEquals('foobarbax (sr@latin)', $translator->trans('foobarbax'));
     }
@@ -67,7 +67,7 @@ public function testTransChoiceWithoutCaching()
     {
         $translator = $this->getTranslator($this->getLoader());
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('choice 0 (EN)', $translator->transChoice('choice', 0));
         $this->assertEquals('other choice 1 (PT-BR)', $translator->transChoice('other choice', 1));
@@ -83,10 +83,10 @@ public function testTransWithCaching()
         $this->assertEquals('foo (FR)', $translator->trans('foo'));
         $this->assertEquals('bar (EN)', $translator->trans('bar'));
         $this->assertEquals('foobar (ES)', $translator->trans('foobar'));
-        $this->assertEquals('choice 0 (EN)', $translator->trans('choice', array('%count%' => 0)));
+        $this->assertEquals('choice 0 (EN)', $translator->trans('choice', ['%count%' => 0]));
         $this->assertEquals('no translation', $translator->trans('no translation'));
         $this->assertEquals('foobarfoo (PT-PT)', $translator->trans('foobarfoo'));
-        $this->assertEquals('other choice 1 (PT-BR)', $translator->trans('other choice', array('%count%' => 1)));
+        $this->assertEquals('other choice 1 (PT-BR)', $translator->trans('other choice', ['%count%' => 1]));
         $this->assertEquals('foobarbaz (fr.UTF-8)', $translator->trans('foobarbaz'));
         $this->assertEquals('foobarbax (sr@latin)', $translator->trans('foobarbax'));
 
@@ -113,9 +113,9 @@ public function testTransWithCaching()
     public function testTransChoiceWithCaching()
     {
         // prime the cache
-        $translator = $this->getTranslator($this->getLoader(), array('cache_dir' => $this->tmpDir));
+        $translator = $this->getTranslator($this->getLoader(), ['cache_dir' => $this->tmpDir]);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('choice 0 (EN)', $translator->transChoice('choice', 0));
         $this->assertEquals('other choice 1 (PT-BR)', $translator->transChoice('other choice', 1));
@@ -124,9 +124,9 @@ public function testTransChoiceWithCaching()
         $loader = $this->getMockBuilder('Symfony\Component\Translation\Loader\LoaderInterface')->getMock();
         $loader->expects($this->never())->method('load');
 
-        $translator = $this->getTranslator($loader, array('cache_dir' => $this->tmpDir));
+        $translator = $this->getTranslator($loader, ['cache_dir' => $this->tmpDir]);
         $translator->setLocale('fr');
-        $translator->setFallbackLocales(array('en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin'));
+        $translator->setFallbackLocales(['en', 'es', 'pt-PT', 'pt_BR', 'fr.UTF-8', 'sr@latin']);
 
         $this->assertEquals('choice 0 (EN)', $translator->transChoice('choice', 0));
         $this->assertEquals('other choice 1 (PT-BR)', $translator->transChoice('other choice', 1));
diff --git a/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php b/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
index 393bd66542d4..3e55022f1642 100644
--- a/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
+++ b/src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php
@@ -150,15 +150,15 @@ public function collect(Request $request, Response $response, \Exception $except
             // collect voter details
             $decisionLog = $this->accessDecisionManager->getDecisionLog();
             foreach ($decisionLog as $key => $log) {
-                $decisionLog[$key]['voter_details'] = array();
+                $decisionLog[$key]['voter_details'] = [];
                 foreach ($log['voterDetails'] as $voterDetail) {
                     $voterClass = \get_class($voterDetail['voter']);
                     $classData = $this->hasVarDumper ? new ClassStub($voterClass) : $voterClass;
-                    $decisionLog[$key]['voter_details'][] = array(
+                    $decisionLog[$key]['voter_details'][] = [
                         'class' => $classData,
                         'attributes' => $voterDetail['attributes'], // Only displayed for unanimous strategy
                         'vote' => $voterDetail['vote'],
-                    );
+                    ];
                 }
                 unset($decisionLog[$key]['voterDetails']);
             }
diff --git a/src/Symfony/Bundle/SecurityBundle/Debug/WrappedListener.php b/src/Symfony/Bundle/SecurityBundle/Debug/WrappedListener.php
index 3f3d2c9077b0..135ac29fc72f 100644
--- a/src/Symfony/Bundle/SecurityBundle/Debug/WrappedListener.php
+++ b/src/Symfony/Bundle/SecurityBundle/Debug/WrappedListener.php
@@ -67,10 +67,10 @@ public function getInfo(): array
             $this->stub = self::$hasVarDumper ? new ClassStub(\get_class($this->listener)) : \get_class($this->listener);
         }
 
-        return array(
+        return [
             'response' => $this->response,
             'time' => $this->time,
             'stub' => $this->stub,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddExpressionLanguageProvidersPass.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddExpressionLanguageProvidersPass.php
index 8a4bf0c6e618..898402d35939 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddExpressionLanguageProvidersPass.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddExpressionLanguageProvidersPass.php
@@ -30,7 +30,7 @@ public function process(ContainerBuilder $container)
         if ($container->has('security.expression_language')) {
             $definition = $container->findDefinition('security.expression_language');
             foreach ($container->findTaggedServiceIds('security.expression_language_provider', true) as $id => $attributes) {
-                $definition->addMethodCall('registerProvider', array(new Reference($id)));
+                $definition->addMethodCall('registerProvider', [new Reference($id)]);
             }
         }
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddSecurityVotersPass.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddSecurityVotersPass.php
index 2b76e2883e7c..87103c37a30c 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddSecurityVotersPass.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddSecurityVotersPass.php
@@ -44,7 +44,7 @@ public function process(ContainerBuilder $container)
         }
 
         $debug = $container->getParameter('kernel.debug');
-        $voterServices = array();
+        $voterServices = [];
         foreach ($voters as $voter) {
             $voterServiceId = (string) $voter;
             $definition = $container->getDefinition($voterServiceId);
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/JsonLoginLdapFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/JsonLoginLdapFactory.php
index df6d4fc2c9e0..bd0e8115e93b 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/JsonLoginLdapFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/JsonLoginLdapFactory.php
@@ -39,7 +39,7 @@ protected function createAuthProvider(ContainerBuilder $container, $id, $config,
         ;
 
         if (!empty($config['query_string'])) {
-            $definition->addMethodCall('setQueryString', array($config['query_string']));
+            $definition->addMethodCall('setQueryString', [$config['query_string']]);
         }
 
         return $provider;
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php
index 57559e0523ad..f7500f05e3b9 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/RememberMeFactory.php
@@ -142,9 +142,9 @@ public function addConfiguration(NodeDefinition $node)
 
         foreach ($this->options as $name => $value) {
             if ('secure' === $name) {
-                $builder->enumNode($name)->values(array(true, false, 'auto'))->defaultValue('auto' === $value ? null : $value);
+                $builder->enumNode($name)->values([true, false, 'auto'])->defaultValue('auto' === $value ? null : $value);
             } elseif ('samesite' === $name) {
-                $builder->enumNode($name)->values(array(null, Cookie::SAMESITE_LAX, Cookie::SAMESITE_STRICT))->defaultValue($value);
+                $builder->enumNode($name)->values([null, Cookie::SAMESITE_LAX, Cookie::SAMESITE_STRICT])->defaultValue($value);
             } elseif (\is_bool($value)) {
                 $builder->booleanNode($name)->defaultValue($value);
             } else {
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
index 69e605acf56b..108afc2f7cea 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
@@ -41,18 +41,18 @@
  */
 class SecurityExtension extends Extension implements PrependExtensionInterface
 {
-    private $requestMatchers = array();
-    private $expressions = array();
-    private $contextListeners = array();
-    private $listenerPositions = array('pre_auth', 'form', 'http', 'remember_me');
-    private $factories = array();
-    private $userProviderFactories = array();
-    private $statelessFirewallKeys = array();
+    private $requestMatchers = [];
+    private $expressions = [];
+    private $contextListeners = [];
+    private $listenerPositions = ['pre_auth', 'form', 'http', 'remember_me'];
+    private $factories = [];
+    private $userProviderFactories = [];
+    private $statelessFirewallKeys = [];
 
     public function __construct()
     {
         foreach ($this->listenerPositions as $position) {
-            $this->factories[$position] = array();
+            $this->factories[$position] = [];
         }
     }
 
@@ -183,7 +183,7 @@ private function createAuthorization($config, ContainerBuilder $container)
             }
 
             $container->getDefinition('security.access_map')
-                      ->addMethodCall('add', array($matcher, $attributes, $access['requires_channel']));
+                      ->addMethodCall('add', [$matcher, $attributes, $access['requires_channel']]);
         }
 
         // allow cache warm-up for expressions
@@ -207,7 +207,7 @@ private function createFirewalls($config, ContainerBuilder $container)
         // make the ContextListener aware of the configured user providers
         $contextListenerDefinition = $container->getDefinition('security.context_listener');
         $arguments = $contextListenerDefinition->getArguments();
-        $userProviders = array();
+        $userProviders = [];
         foreach ($providerIds as $userProviderId) {
             $userProviders[] = new Reference($userProviderId);
         }
@@ -222,7 +222,7 @@ private function createFirewalls($config, ContainerBuilder $container)
 
         // load firewall map
         $mapDef = $container->getDefinition('security.firewall.map');
-        $map = $authenticationProviders = $contextRefs = array();
+        $map = $authenticationProviders = $contextRefs = [];
         foreach ($firewalls as $name => $firewall) {
             if (isset($firewall['user_checker']) && 'security.user_checker' !== $firewall['user_checker']) {
                 $customUserChecker = true;
@@ -275,7 +275,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         } elseif (isset($firewall['pattern']) || isset($firewall['host'])) {
             $pattern = isset($firewall['pattern']) ? $firewall['pattern'] : null;
             $host = isset($firewall['host']) ? $firewall['host'] : null;
-            $methods = isset($firewall['methods']) ? $firewall['methods'] : array();
+            $methods = isset($firewall['methods']) ? $firewall['methods'] : [];
             $matcher = $this->createRequestMatcher($container, $pattern, $host, null, $methods);
         }
 
@@ -284,7 +284,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
 
         // Security disabled?
         if (false === $firewall['security']) {
-            return array($matcher, array(), null, null);
+            return [$matcher, [], null, null];
         }
 
         $config->replaceArgument(4, $firewall['stateless']);
@@ -303,8 +303,8 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         $config->replaceArgument(5, $defaultProvider);
 
         // Register listeners
-        $listeners = array();
-        $listenerKeys = array();
+        $listeners = [];
+        $listenerKeys = [];
 
         // Channel listener
         $listeners[] = new Reference('security.channel_listener');
@@ -328,11 +328,11 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         if (isset($firewall['logout'])) {
             $logoutListenerId = 'security.logout_listener.'.$id;
             $logoutListener = $container->setDefinition($logoutListenerId, new ChildDefinition('security.logout_listener'));
-            $logoutListener->replaceArgument(3, array(
+            $logoutListener->replaceArgument(3, [
                 'csrf_parameter' => $firewall['logout']['csrf_parameter'],
                 'csrf_token_id' => $firewall['logout']['csrf_token_id'],
                 'logout_path' => $firewall['logout']['path'],
-            ));
+            ]);
 
             // add logout success handler
             if (isset($firewall['logout']['success_handler'])) {
@@ -351,7 +351,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
 
             // add session logout handler
             if (true === $firewall['logout']['invalidate_session'] && false === $firewall['stateless']) {
-                $logoutListener->addMethodCall('addHandler', array(new Reference('security.logout.handler.session')));
+                $logoutListener->addMethodCall('addHandler', [new Reference('security.logout.handler.session')]);
             }
 
             // add cookie logout handler
@@ -360,25 +360,25 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
                 $cookieHandler = $container->setDefinition($cookieHandlerId, new ChildDefinition('security.logout.handler.cookie_clearing'));
                 $cookieHandler->addArgument($firewall['logout']['delete_cookies']);
 
-                $logoutListener->addMethodCall('addHandler', array(new Reference($cookieHandlerId)));
+                $logoutListener->addMethodCall('addHandler', [new Reference($cookieHandlerId)]);
             }
 
             // add custom handlers
             foreach ($firewall['logout']['handlers'] as $handlerId) {
-                $logoutListener->addMethodCall('addHandler', array(new Reference($handlerId)));
+                $logoutListener->addMethodCall('addHandler', [new Reference($handlerId)]);
             }
 
             // register with LogoutUrlGenerator
             $container
                 ->getDefinition('security.logout_url_generator')
-                ->addMethodCall('registerListener', array(
+                ->addMethodCall('registerListener', [
                     $id,
                     $firewall['logout']['path'],
                     $firewall['logout']['csrf_token_id'],
                     $firewall['logout']['csrf_parameter'],
                     isset($firewall['logout']['csrf_token_generator']) ? new Reference($firewall['logout']['csrf_token_generator']) : null,
                     false === $firewall['stateless'] && isset($firewall['context']) ? $firewall['context'] : null,
-                ))
+                ])
             ;
         }
 
@@ -425,7 +425,7 @@ private function createFirewall(ContainerBuilder $container, $id, $firewall, &$a
         $config->replaceArgument(10, $listenerKeys);
         $config->replaceArgument(11, isset($firewall['switch_user']) ? $firewall['switch_user'] : null);
 
-        return array($matcher, $listeners, $exceptionListener, null !== $logoutListenerId ? new Reference($logoutListenerId) : null);
+        return [$matcher, $listeners, $exceptionListener, null !== $logoutListenerId ? new Reference($logoutListenerId) : null];
     }
 
     private function createContextListener($container, $contextKey)
@@ -443,7 +443,7 @@ private function createContextListener($container, $contextKey)
 
     private function createAuthenticationListeners($container, $id, $firewall, &$authenticationProviders, $defaultProvider = null, array $providerIds, $defaultEntryPoint)
     {
-        $listeners = array();
+        $listeners = [];
         $hasListeners = false;
 
         foreach ($this->listenerPositions as $position) {
@@ -505,19 +505,19 @@ private function createAuthenticationListeners($container, $id, $firewall, &$aut
             throw new InvalidConfigurationException(sprintf('No authentication listener registered for firewall "%s".', $id));
         }
 
-        return array($listeners, $defaultEntryPoint);
+        return [$listeners, $defaultEntryPoint];
     }
 
     private function createEncoders($encoders, ContainerBuilder $container)
     {
-        $encoderMap = array();
+        $encoderMap = [];
         foreach ($encoders as $class => $encoder) {
             $encoderMap[$class] = $this->createEncoder($encoder, $container);
         }
 
         $container
             ->getDefinition('security.encoder_factory.generic')
-            ->setArguments(array($encoderMap))
+            ->setArguments([$encoderMap])
         ;
     }
 
@@ -530,33 +530,33 @@ private function createEncoder($config, ContainerBuilder $container)
 
         // plaintext encoder
         if ('plaintext' === $config['algorithm']) {
-            $arguments = array($config['ignore_case']);
+            $arguments = [$config['ignore_case']];
 
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder',
                 'arguments' => $arguments,
-            );
+            ];
         }
 
         // pbkdf2 encoder
         if ('pbkdf2' === $config['algorithm']) {
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Pbkdf2PasswordEncoder',
-                'arguments' => array(
+                'arguments' => [
                     $config['hash_algorithm'],
                     $config['encode_as_base64'],
                     $config['iterations'],
                     $config['key_length'],
-                ),
-            );
+                ],
+            ];
         }
 
         // bcrypt encoder
         if ('bcrypt' === $
10000
config['algorithm']) {
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder',
-                'arguments' => array($config['cost']),
-            );
+                'arguments' => [$config['cost']],
+            ];
         }
 
         // Argon2i encoder
@@ -569,14 +569,14 @@ private function createEncoder($config, ContainerBuilder $container)
                 throw new InvalidConfigurationException('Argon2i algorithm is not supported. Install the libsodium extension or use BCrypt instead.');
             }
 
-            return array(
+            return [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Argon2iPasswordEncoder',
-                'arguments' => array(
+                'arguments' => [
                     $config['memory_cost'],
                     $config['time_cost'],
                     $config['threads'],
-                ),
-            );
+                ],
+            ];
         }
 
         // run-time configured encoder
@@ -586,7 +586,7 @@ private function createEncoder($config, ContainerBuilder $container)
     // Parses user providers and returns an array of their ids
     private function createUserProviders($config, ContainerBuilder $container)
     {
-        $providerIds = array();
+        $providerIds = [];
         foreach ($config['providers'] as $name => $provider) {
             $id = $this->createUserDaoProvider($name, $provider, $container);
             $providerIds[str_replace('-', '_', $name)] = $id;
@@ -620,7 +620,7 @@ private function createUserDaoProvider($name, $provider, ContainerBuilder $conta
 
         // Chain provider
         if (isset($provider['chain'])) {
-            $providers = array();
+            $providers = [];
             foreach ($provider['chain']['providers'] as $providerName) {
                 $providers[] = new Reference($this->getUserProviderId($providerName));
             }
@@ -697,20 +697,20 @@ private function createExpression($container, $expression)
         return $this->expressions[$id] = new Reference($id);
     }
 
-    private function createRequestMatcher($container, $path = null, $host = null, int $port = null, $methods = array(), $ip = null, array $attributes = array())
+    private function createRequestMatcher($container, $path = null, $host = null, int $port = null, $methods = [], $ip = null, array $attributes = [])
     {
         if ($methods) {
             $methods = array_map('strtoupper', (array) $methods);
         }
 
-        $id = '.security.request_matcher.'.ContainerBuilder::hash(array($path, $host, $port, $methods, $ip, $attributes));
+        $id = '.security.request_matcher.'.ContainerBuilder::hash([$path, $host, $port, $methods, $ip, $attributes]);
 
         if (isset($this->requestMatchers[$id])) {
             return $this->requestMatchers[$id];
         }
 
         // only add arguments that are necessary
-        $arguments = array($path, $host, $methods, $ip, $attributes, null, $port);
+        $arguments = [$path, $host, $methods, $ip, $attributes, null, $port];
         while (\count($arguments) > 0 && !end($arguments)) {
             array_pop($arguments);
         }
diff --git a/src/Symfony/Bundle/SecurityBundle/EventListener/VoteListener.php b/src/Symfony/Bundle/SecurityBundle/EventListener/VoteListener.php
index dd9dddf83b2e..30956dafcfb9 100644
--- a/src/Symfony/Bundle/SecurityBundle/EventListener/VoteListener.php
+++ b/src/Symfony/Bundle/SecurityBundle/EventListener/VoteListener.php
@@ -43,6 +43,6 @@ public function onVoterVote(VoteEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array('debug.security.authorization.vote' => 'onVoterVote');
+        return ['debug.security.authorization.vote' => 'onVoterVote'];
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
index ff89aecfa406..e95b354d9985 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php
@@ -97,12 +97,12 @@ public function testCollectAuthenticationTokenAndRoles(array $roles, array $norm
 
     public function testCollectImpersonatedToken()
     {
-        $adminToken = new UsernamePasswordToken('yceruto', 'P4$$w0rD', 'provider', array('ROLE_ADMIN'));
+        $adminToken = new UsernamePasswordToken('yceruto', 'P4$$w0rD', 'provider', ['ROLE_ADMIN']);
 
-        $userRoles = array(
+        $userRoles = [
             'ROLE_USER',
             new SwitchUserRole('ROLE_PREVIOUS_ADMIN', $adminToken),
-        );
+        ];
 
         $tokenStorage = new TokenStorage();
         $tokenStorage->setToken(new UsernamePasswordToken('hhamon', 'P4$$w0rD', 'provider', $userRoles));
@@ -117,8 +117,8 @@ public function testCollectImpersonatedToken()
         $this->assertSame('yceruto', $collector->getImpersonatorUser());
         $this->assertSame('Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken', $collector->getTokenClass()->getValue());
         $this->assertTrue($collector->supportsRoleHierarchy());
-        $this->assertSame(array('ROLE_USER', 'ROLE_PREVIOUS_ADMIN'), $collector->getRoles()->getValue(true));
-        $this->assertSame(array(), $collector->getInheritedRoles()->getValue(true));
+        $this->assertSame(['ROLE_USER', 'ROLE_PREVIOUS_ADMIN'], $collector->getRoles()->getValue(true));
+        $this->assertSame([], $collector->getInheritedRoles()->getValue(true));
         $this->assertSame('hhamon', $collector->getUser());
     }
 
@@ -213,7 +213,7 @@ public function testGetListeners()
             ->expects($this->once())
             ->method('getListeners')
             ->with($request)
-            ->willReturn(array(array($listener), null, null));
+            ->willReturn([[$listener], null, null]);
 
         $firewall = new TraceableFirewallListener($firewallMap, new EventDispatcher(), new LogoutUrlGenerator());
         $firewall->onKernelRequest($event);
@@ -235,79 +235,79 @@ public function providerCollectDecisionLog(): \Generator
         $decoratedVoter1 = new TraceableVoter($voter1, $eventDispatcher);
         $decoratedVoter2 = new TraceableVoter($voter2, $eventDispatcher);
 
-        yield array(
+        yield [
             AccessDecisionManager::STRATEGY_AFFIRMATIVE,
-            array(array(
-                'attributes' => array('view'),
+            [[
+                'attributes' => ['view'],
                 'object' => new \stdClass(),
                 'result' => true,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array('view'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                    array('voter' => $voter2, 'attributes' => array('view'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                ),
-            )),
-            array($decoratedVoter1, $decoratedVoter1),
-            array(\get_class($voter1), \get_class($voter2)),
-            array(array(
-                'attributes' => array('view'),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => ['view'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                    ['voter' => $voter2, 'attributes' => ['view'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                ],
+            ]],
+            [$decoratedVoter1, $decoratedVoter1],
+            [\get_class($voter1), \get_class($voter2)],
+            [[
+                'attributes' => ['view'],
                 'object' => new \stdClass(),
                 'result' => true,
-                'voter_details' => array(
-                    array('class' => \get_class($voter1), 'attributes' => array('view'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                    array('class' => \get_class($voter2), 'attributes' => array('view'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                ),
-            )),
-        );
-
-        yield array(
+                'voter_details' => [
+                    ['class' => \get_class($voter1), 'attributes' => ['view'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                    ['class' => \get_class($voter2), 'attributes' => ['view'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                ],
+            ]],
+        ];
+
+        yield [
             AccessDecisionManager::STRATEGY_UNANIMOUS,
-            array(
-                array(
-                    'attributes' => array('view', 'edit'),
+            [
+                [
+                    'attributes' => ['view', 'edit'],
                     'object' => new \stdClass(),
                     'result' => false,
-                    'voterDetails' => array(
-                        array('voter' => $voter1, 'attributes' => array('view'), 'vote' => VoterInterface::ACCESS_DENIED),
-                        array('voter' => $voter1, 'attributes' => array('edit'), 'vote' => VoterInterface::ACCESS_DENIED),
-                        array('voter' => $voter2, 'attributes' => array('view'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                        array('voter' => $voter2, 'attributes' => array('edit'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                    ),
-                ),
-                array(
-                    'attributes' => array('update'),
+                    'voterDetails' => [
+                        ['voter' => $voter1, 'attributes' => ['view'], 'vote' => VoterInterface::ACCESS_DENIED],
+                        ['voter' => $voter1, 'attributes' => ['edit'], 'vote' => VoterInterface::ACCESS_DENIED],
+                        ['voter' => $voter2, 'attributes' => ['view'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                        ['voter' => $voter2, 'attributes' => ['edit'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                    ],
+                ],
+                [
+                    'attributes' => ['update'],
                     'object' => new \stdClass(),
                     'result' => true,
-                    'voterDetails' => array(
-                        array('voter' => $voter1, 'attributes' => array('update'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                        array('voter' => $voter2, 'attributes' => array('update'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                    ),
-                ),
-            ),
-            array($decoratedVoter1, $decoratedVoter1),
-            array(\get_class($voter1), \get_class($voter2)),
-            array(
-                array(
-                    'attributes' => array('view', 'edit'),
+                    'voterDetails' => [
+                        ['voter' => $voter1, 'attributes' => ['update'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                        ['voter' => $voter2, 'attributes' => ['update'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                    ],
+                ],
+            ],
+            [$decoratedVoter1, $decoratedVoter1],
+            [\get_class($voter1), \get_class($voter2)],
+            [
+                [
+                    'attributes' => ['view', 'edit'],
                     'object' => new \stdClass(),
                     'result' => false,
-                    'voter_details' => array(
-                        array('class' => \get_class($voter1), 'attributes' => array('view'), 'vote' => VoterInterface::ACCESS_DENIED),
-                        array('class' => \get_class($voter1), 'attributes' => array('edit'), 'vote' => VoterInterface::ACCESS_DENIED),
-                        array('class' => \get_class($voter2), 'attributes' => array('view'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                        array('class' => \get_class($voter2), 'attributes' => array('edit'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                    ),
-                ),
-                array(
-                    'attributes' => array('update'),
+                    'voter_details' => [
+                        ['class' => \get_class($voter1), 'attributes' => ['view'], 'vote' => VoterInterface::ACCESS_DENIED],
+                        ['class' => \get_class($voter1), 'attributes' => ['edit'], 'vote' => VoterInterface::ACCESS_DENIED],
+                        ['class' => \get_class($voter2), 'attributes' => ['view'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                        ['class' => \get_class($voter2), 'attributes' => ['edit'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                    ],
+                ],
+                [
+                    'attributes' => ['update'],
                     'object' => new \stdClass(),
                     'result' => true,
-                    'voter_details' => array(
-                        array('class' => \get_class($voter1), 'attributes' => array('update'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                        array('class' => \get_class($voter2), 'attributes' => array('update'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                    ),
-                ),
-            ),
-        );
+                    'voter_details' => [
+                        ['class' => \get_class($voter1), 'attributes' => ['update'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                        ['class' => \get_class($voter2), 'attributes' => ['update'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                    ],
+                ],
+            ],
+        ];
     }
 
     /**
@@ -326,7 +326,7 @@ public function testCollectDecisionLog(string $strategy, array $decisionLog, arr
         $accessDecisionManager = $this
             ->getMockBuilder(TraceableAccessDecisionManager::class)
             ->disableOriginalConstructor()
-            ->setMethods(array('getStrategy', 'getVoters', 'getDecisionLog'))
+            ->setMethods(['getStrategy', 'getVoters', 'getDecisionLog'])
             ->getMock();
 
         $accessDecisionManager
@@ -359,43 +359,43 @@ public function testCollectDecisionLog(string $strategy, array $decisionLog, arr
 
     public function provideRoles()
     {
-        return array(
+        return [
             // Basic roles
-            array(
-                array('ROLE_USER'),
-                array('ROLE_USER'),
-                array(),
-            ),
-            array(
-                array(new Role('ROLE_USER')),
-                array('ROLE_USER'),
-                array(),
-            ),
+            [
+                ['ROLE_USER'],
+                ['ROLE_USER'],
+                [],
+            ],
+            [
+                [new Role('ROLE_USER')],
+                ['ROLE_USER'],
+                [],
+            ],
             // Inherited roles
-            array(
-                array('ROLE_ADMIN'),
-                array('ROLE_ADMIN'),
-                array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
-            ),
-            array(
-                array(new Role('ROLE_ADMIN')),
-                array('ROLE_ADMIN'),
-                array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
-            ),
-            array(
-                array('ROLE_ADMIN', 'ROLE_OPERATOR'),
-                array('ROLE_ADMIN', 'ROLE_OPERATOR'),
-                array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
-            ),
-        );
+            [
+                ['ROLE_ADMIN'],
+                ['ROLE_ADMIN'],
+                ['ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'],
+            ],
+            [
+                [new Role('ROLE_ADMIN')],
+                ['ROLE_ADMIN'],
+                ['ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'],
+            ],
+            [
+                ['ROLE_ADMIN', 'ROLE_OPERATOR'],
+                ['ROLE_ADMIN', 'ROLE_OPERATOR'],
+                ['ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'],
+            ],
+        ];
     }
 
     private function getRoleHierarchy()
     {
-        return new RoleHierarchy(array(
-            'ROLE_ADMIN' => array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
-            'ROLE_OPERATOR' => array('ROLE_USER'),
-        ));
+        return new RoleHierarchy([
+            'ROLE_ADMIN' => ['ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'],
+            'ROLE_OPERATOR' => ['ROLE_USER'],
+        ]);
     }
 
     private function getRequest()
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
index c77ed14dc6e4..bf5b8c509952 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
@@ -51,7 +51,7 @@ public function testOnKernelRequestRecordsListeners()
             ->expects($this->once())
             ->method('getListeners')
             ->with($request)
-            ->willReturn(array(array($listener), null, null));
+            ->willReturn([[$listener], null, null]);
 
         $firewall = new TraceableFirewallListener($firewallMap, new EventDispatcher(), new LogoutUrlGenerator());
         $firewall->onKernelRequest($event);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
index 718e9703df40..93d412155385 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php
@@ -86,7 +86,7 @@ public function testThatVotersAreTraceableInDebugMode(): void
 
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array($voterDef1, $voterDef2));
+            ->addArgument([$voterDef1, $voterDef2]);
         $container->setParameter('kernel.debug', true);
 
         $compilerPass = new AddSecurityVotersPass();
@@ -119,7 +119,7 @@ public function testThatVotersAreNotTraceableWithoutDebugMode(): void
 
         $container
             ->register('security.access.decision_manager', AccessDecisionManager::class)
-            ->addArgument(array($voterDef1, $voterDef2));
+            ->addArgument([$voterDef1, $voterDef2]);
 
         $compilerPass = new AddSecurityVotersPass();
         $compilerPass->process($container);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSessionDomainConstraintPassTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSessionDomainConstraintPassTest.php
index ba3d555cf674..7dcf7526bd55 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSessionDomainConstraintPassTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSessionDomainConstraintPassTest.php
@@ -22,7 +22,7 @@ class AddSessionDomainConstraintPassTest extends TestCase
 {
     public function testSessionCookie()
     {
-        $container = $this->createContainer(array('cookie_domain' => '.symfony.com.', 'cookie_secure' => true));
+        $container = $this->createContainer(['cookie_domain' => '.symfony.com.', 'cookie_secure' => true]);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -37,7 +37,7 @@ public function testSessionCookie()
 
     public function testSessionNoDomain()
     {
-        $container = $this->createContainer(array('cookie_secure' => true));
+        $container = $this->createContainer(['cookie_secure' => true]);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -52,7 +52,7 @@ public function testSessionNoDomain()
 
     public function testSessionNoSecure()
     {
-        $container = $this->createContainer(array('cookie_domain' => '.symfony.com.'));
+        $container = $this->createContainer(['cookie_domain' => '.symfony.com.']);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -67,7 +67,7 @@ public function testSessionNoSecure()
 
     public function testSessionNoSecureAndNoDomain()
     {
-        $container = $this->createContainer(array());
+        $container = $this->createContainer([]);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -98,7 +98,7 @@ public function testNoSession()
 
     public function testSessionAutoSecure()
     {
-        $container = $this->createContainer(array('cookie_domain' => '.symfony.com.', 'cookie_secure' => 'auto'));
+        $container = $this->createContainer(['cookie_domain' => '.symfony.com.', 'cookie_secure' => 'auto']);
 
         $utils = $container->get('security.http_utils');
         $request = Request::create('/', 'get');
@@ -119,7 +119,7 @@ public function testSessionAutoSecure()
     private function createContainer($sessionStorageOptions)
     {
         $container = new ContainerBuilder();
-        $container->setParameter('kernel.bundles_metadata', array());
+        $container->setParameter('kernel.bundles_metadata', []);
         $container->setParameter('kernel.cache_dir', __DIR__);
         $container->setParameter('kernel.charset', 'UTF-8');
         $container->setParameter('kernel.container_class', 'cc');
@@ -133,15 +133,15 @@ private function createContainer($sessionStorageOptions)
         $container->setParameter('request_listener.http_port', 80);
         $container->setParameter('request_listener.https_port', 443);
 
-        $config = array(
-            'security' => array(
-                'providers' => array('some_provider' => array('id' => 'foo')),
-                'firewalls' => array('some_firewall' => array('security' => false)),
-            ),
-        );
+        $config = [
+            'security' => [
+                'providers' => ['some_provider' => ['id' => 'foo']],
+                'firewalls' => ['some_firewall' => ['security' => false]],
+            ],
+        ];
 
         $ext = new FrameworkExtension();
-        $ext->load(array('framework' => array('csrf_protection' => false, 'router' => array('resource' => 'dummy'))), $container);
+        $ext->load(['framework' => ['csrf_protection' => false, 'router' => ['resource' => 'dummy']]], $container);
 
         $ext = new SecurityExtension();
         $ext->load($config, $container);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
index 01908413bf30..c2511ff280d5 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
@@ -29,11 +29,11 @@ abstract protected function getFileExtension();
     public function testRolesHierarchy()
     {
         $container = $this->getContainer('container1');
-        $this->assertEquals(array(
-            'ROLE_ADMIN' => array('ROLE_USER'),
-            'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
-            'ROLE_REMOTE' => array('ROLE_USER', 'ROLE_ADMIN'),
-        ), $container->getParameter('security.role_hierarchy.roles'));
+        $this->assertEquals([
+            'ROLE_ADMIN' => ['ROLE_USER'],
+            'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
+            'ROLE_REMOTE' => ['ROLE_USER', 'ROLE_ADMIN'],
+        ], $container->getParameter('security.role_hierarchy.roles'));
     }
 
     public function testUserProviders()
@@ -42,30 +42,30 @@ public function testUserProviders()
 
         $providers = array_values(array_filter($container->getServiceIds(), function ($key) { return 0 === strpos($key, 'security.user.provider.concrete'); }));
 
-        $expectedProviders = array(
+        $expectedProviders = [
             'security.user.provider.concrete.default',
             'security.user.provider.concrete.digest',
             'security.user.provider.concrete.basic',
             'security.user.provider.concrete.service',
             'security.user.provider.concrete.chain',
-        );
+        ];
 
-        $this->assertEquals(array(), array_diff($expectedProviders, $providers));
-        $this->assertEquals(array(), array_diff($providers, $expectedProviders));
+        $this->assertEquals([], array_diff($expectedProviders, $providers));
+        $this->assertEquals([], array_diff($providers, $expectedProviders));
 
         // chain provider
-        $this->assertEquals(array(new IteratorArgument(array(
+        $this->assertEquals([new IteratorArgument([
             new Reference('security.user.provider.concrete.service'),
             new Reference('security.user.provider.concrete.basic'),
-        ))), $container->getDefinition('security.user.provider.concrete.chain')->getArguments());
+        ])], $container->getDefinition('security.user.provider.concrete.chain')->getArguments());
     }
 
     public function testFirewalls()
     {
         $container = $this->getContainer('container1');
         $arguments = $container->getDefinition('security.firewall.map')->getArguments();
-        $listeners = array();
-        $configs = array();
+        $listeners = [];
+        $configs = [];
         foreach (array_keys($arguments[1]->getValues()) as $contextId) {
             $contextDef = $container->getDefinition($contextId);
             $arguments = $contextDef->getArguments();
@@ -80,14 +80,14 @@ public function testFirewalls()
         $configs[0][2] = strtolower($configs[0][2]);
         $configs[2][2] = strtolower($configs[2][2]);
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 'simple',
                 'security.user_checker',
                 '.security.request_matcher.xmi9dcw',
                 false,
-            ),
-            array(
+            ],
+            [
                 'secure',
                 'security.user_checker',
                 null,
@@ -98,7 +98,7 @@ public function testFirewalls()
                 'security.authentication.form_entry_point.secure',
                 null,
                 null,
-                array(
+                [
                     'switch_user',
                     'x509',
                     'remote_user',
@@ -106,14 +106,14 @@ public function testFirewalls()
                     'http_basic',
                     'remember_me',
                     'anonymous',
-                ),
-                array(
+                ],
+                [
                     'parameter' => '_switch_user',
                     'role' => 'ROLE_ALLOWED_TO_SWITCH',
                     'stateless' => false,
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 'host',
                 'security.user_checker',
                 '.security.request_matcher.iw4hyjb',
@@ -124,13 +124,13 @@ public function testFirewalls()
                 'security.authentication.basic_entry_point.host',
                 null,
                 null,
-                array(
+                [
                     'http_basic',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-            array(
+            ],
+            [
                 'with_user_checker',
                 'app.user_checker',
                 null,
@@ -141,17 +141,17 @@ public function testFirewalls()
                 'security.authentication.basic_entry_point.with_user_checker',
                 null,
                 null,
-                array(
+                [
                     'http_basic',
                     'anonymous',
-                ),
+                ],
                 null,
-            ),
-        ), $configs);
+            ],
+        ], $configs);
 
-        $this->assertEquals(array(
-            array(),
-            array(
+        $this->assertEquals([
+            [],
+            [
                 'security.channel_listener',
                 'security.authentication.listener.x509.secure',
                 'security.authentication.listener.remote_user.secure',
@@ -161,22 +161,22 @@ public function testFirewalls()
                 'security.authentication.listener.anonymous.secure',
                 'security.authentication.switchuser_listener.secure',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.0',
                 'security.authentication.listener.basic.host',
                 'security.authentication.listener.anonymous.host',
                 'security.access_listener',
-            ),
-            array(
+            ],
+            [
                 'security.channel_listener',
                 'security.context_listener.1',
                 'security.authentication.listener.basic.with_user_checker',
                 'security.authentication.listener.anonymous.with_user_checker',
                 'security.access_listener',
-            ),
-        ), $listeners);
+            ],
+        ], $listeners);
 
         $this->assertFalse($container->hasAlias('Symfony\Component\Security\Core\User\UserCheckerInterface', 'No user checker alias is registered when custom user checker services are registered'));
     }
@@ -186,7 +186,7 @@ public function testFirewallRequestMatchers()
         $container = $this->getContainer('container1');
 
         $arguments = $container->getDefinition('security.firewall.map')->getArguments();
-        $matchers = array();
+        $matchers = [];
 
         foreach ($arguments[1]->getValues() as $reference) {
             if ($reference instanceof Reference) {
@@ -195,16 +195,16 @@ public function testFirewallRequestMatchers()
             }
         }
 
-        $this->assertEquals(array(
-            array(
+        $this->assertEquals([
+            [
                 '/login',
-            ),
-            array(
+            ],
+            [
                 '/test',
                 'foo\\.example\\.org',
-                array('GET', 'POST'),
-            ),
-        ), $matchers);
+                ['GET', 'POST'],
+            ],
+        ], $matchers);
     }
 
     public function testUserCheckerAliasIsRegistered()
@@ -219,14 +219,14 @@ public function testAccess()
     {
         $container = $this->getContainer('container1');
 
-        $rules = array();
+        $rules = [];
         foreach ($container->getDefinition('security.access_map')->getMethodCalls() as $call) {
             if ('add' == $call[0]) {
-                $rules[] = array((string) $call[1][0], $call[1][1], $call[1][2]);
+                $rules[] = [(string) $call[1][0], $call[1][1], $call[1][2]];
             }
         }
 
-        $matcherIds = array();
+        $matcherIds = [];
         foreach ($rules as list($matcherId, $attributes, $channel)) {
             $requestMatcher = $container->getDefinition($matcherId);
 
@@ -235,17 +235,17 @@ public function testAccess()
 
             $i = \count($matcherIds);
             if (1 === $i) {
-                $this->assertEquals(array('ROLE_USER'), $attributes);
+                $this->assertEquals(['ROLE_USER'], $attributes);
                 $this->assertEquals('https', $channel);
                 $this->assertEquals(
-                    array('/blog/524', null, array('GET', 'POST'), array(), array(), null, 8000),
+                    ['/blog/524', null, ['GET', 'POST'], [], [], null, 8000],
                     $requestMatcher->getArguments()
                 );
             } elseif (2 === $i) {
-                $this->assertEquals(array('IS_AUTHENTICATED_ANONYMOUSLY'), $attributes);
+                $this->assertEquals(['IS_AUTHENTICATED_ANONYMOUSLY'], $attributes);
                 $this->assertNull($channel);
                 $this->assertEquals(
-                    array('/blog/.*'),
+                    ['/blog/.*'],
                     $requestMatcher->getArguments()
                 );
             } elseif (3 === $i) {
@@ -260,22 +260,22 @@ public function testMerge()
     {
         $container = $this->getContainer('merge');
 
-        $this->assertEquals(array(
-            'FOO' => array('MOO'),
-            'ADMIN' => array('USER'),
-        ), $container->getParameter('security.role_hierarchy.roles'));
+        $this->assertEquals([
+            'FOO' => ['MOO'],
+            'ADMIN' => ['USER'],
+        ], $container->getParameter('security.role_hierarchy.roles'));
     }
 
     public function testEncoders()
     {
         $container = $this->getContainer('container1');
 
-        $this->assertEquals(array(array(
-            'JMS\FooBundle\Entity\User1' => array(
+        $this->assertEquals([[
+            'JMS\FooBundle\Entity\User1' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder',
-                'arguments' => array(false),
-            ),
-            'JMS\FooBundle\Entity\User2' => array(
+                'arguments' => [false],
+            ],
+            'JMS\FooBundle\Entity\User2' => [
                 'algorithm' => 'sha1',
                 'encode_as_base64' => false,
                 'iterations' => 5,
@@ -286,8 +286,8 @@ public function testEncoders()
                 'memory_cost' => null,
                 'time_cost' => null,
                 'threads' => null,
-            ),
-            'JMS\FooBundle\Entity\User3' => array(
+            ],
+            'JMS\FooBundle\Entity\User3' => [
                 'algorithm' => 'md5',
                 'hash_algorithm' => 'sha512',
                 'key_length' => 40,
@@ -298,17 +298,17 @@ public function testEncoders()
                 'memory_cost' => null,
                 'time_cost' => null,
                 'threads' => null,
-            ),
+            ],
             'JMS\FooBundle\Entity\User4' => new Reference('security.encoder.foo'),
-            'JMS\FooBundle\Entity\User5' => array(
+            'JMS\FooBundle\Entity\User5' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Pbkdf2PasswordEncoder',
-                'arguments' => array('sha1', false, 5, 30),
-            ),
-            'JMS\FooBundle\Entity\User6' => array(
+                'arguments' => ['sha1', false, 5, 30],
+            ],
+            'JMS\FooBundle\Entity\User6' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder',
-                'arguments' => array(15),
-            ),
-        )), $container->getDefinition('security.encoder_factory.generic')->getArguments());
+                'arguments' => [15],
+            ],
+        ]], $container->getDefinition('security.encoder_factory.generic')->getArguments());
     }
 
     public function testEncodersWithLibsodium()
@@ -319,12 +319,12 @@ public function testEncodersWithLibsodium()
 
         $container = $this->getContainer('argon2i_encoder');
 
-        $this->assertEquals(array(array(
-            'JMS\FooBundle\Entity\User1' => array(
+        $this->assertEquals([[
+            'JMS\FooBundle\Entity\User1' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\PlaintextPasswordEncoder',
-                'arguments' => array(false),
-            ),
-            'JMS\FooBundle\Entity\User2' => array(
+                'arguments' => [false],
+            ],
+            'JMS\FooBundle\Entity\User2' => [
                 'algorithm' => 'sha1',
                 'encode_as_base64' => false,
                 'iterations' => 5,
@@ -335,8 +335,8 @@ public function testEncodersWithLibsodium()
                 'memory_cost' => null,
                 'time_cost' => null,
                 'threads' => null,
-            ),
-            'JMS\FooBundle\Entity\User3' => array(
+            ],
+            'JMS\FooBundle\Entity\User3' => [
                 'algorithm' => 'md5',
                 'hash_algorithm' => 'sha512',
                 'key_length' => 40,
@@ -347,21 +347,21 @@ public function testEncodersWithLibsodium()
                 'memory_cost' => null,
                 'time_cost' => null,
                 'threads' => null,
-            ),
+            ],
             'JMS\FooBundle\Entity\User4' => new Reference('security.encoder.foo'),
-            'JMS\FooBundle\Entity\User5' => array(
+            'JMS\FooBundle\Entity\User5' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Pbkdf2PasswordEncoder',
-                'arguments' => array('sha1', false, 5, 30),
-            ),
-            'JMS\FooBundle\Entity\User6' => array(
+                'arguments' => ['sha1', false, 5, 30],
+            ],
+            'JMS\FooBundle\Entity\User6' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\BCryptPasswordEncoder',
-                'arguments' => array(15),
-            ),
-            'JMS\FooBundle\Entity\User7' => array(
+                'arguments' => [15],
+            ],
+            'JMS\FooBundle\Entity\User7' => [
                 'class' => 'Symfony\Component\Security\Core\Encoder\Argon2iPasswordEncoder',
-                'arguments' => array(256, 1, 2),
-            ),
-        )), $container->getDefinition('security.encoder_factory.generic')->getArguments());
+                'arguments' => [256, 1, 2],
+            ],
+        ]], $container->getDefinition('security.encoder_factory.generic')->getArguments());
     }
 
     public function testRememberMeThrowExceptionsDefault()
@@ -470,8 +470,8 @@ public function testSimpleAuth()
     {
         $container = $this->getContainer('simple_auth');
         $arguments = $container->getDefinition('security.firewall.map')->getArguments();
-        $listeners = array();
-        $configs = array();
+        $listeners = [];
+        $configs = [];
         foreach (array_keys($arguments[1]->getValues()) as $contextId) {
             $contextDef = $container->getDefinition($contextId);
             $arguments = $contextDef->getArguments();
@@ -481,7 +481,7 @@ public function testSimpleAuth()
             $configs[] = array_values($configDef->getArguments());
         }
 
-        $this->assertSame(array(array(
+        $this->assertSame([[
             'simple_auth',
             'security.user_checker',
             null,
@@ -492,18 +492,18 @@ public function testSimpleAuth()
             'security.authentication.form_entry_point.simple_auth',
             null,
             null,
-            array('simple_form', 'anonymous',
-            ),
+            ['simple_form', 'anonymous',
+            ],
             null,
-        )), $configs);
+        ]], $configs);
 
-        $this->assertSame(array(array(
+        $this->assertSame([[
             'security.channel_listener',
             'security.context_listener.0',
             'security.authentication.listener.simple_form.simple_auth',
             'security.authentication.listener.anonymous.simple_auth',
             'security.access_listener',
-        )), $listeners);
+        ]], $listeners);
     }
 
     protected function getContainer($file)
@@ -520,8 +520,8 @@ protected function getContainer($file)
         $bundle->build($container); // Attach all default factories
         $this->getLoader($container)->load($file);
 
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         return $container;
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
index c2952a1ad0ca..f420d4d8af63 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/container1.php
@@ -1,67 +1,67 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'encoders' => array(
+$container->loadFromExtension('security', [
+    'encoders' => [
         'JMS\FooBundle\Entity\User1' => 'plaintext',
-        'JMS\FooBundle\Entity\User2' => array(
+        'JMS\FooBundle\Entity\User2' => [
             'algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
-        ),
-        'JMS\FooBundle\Entity\User3' => array(
+        ],
+        'JMS\FooBundle\Entity\User3' => [
             'algorithm' => 'md5',
-        ),
-        'JMS\FooBundle\Entity\User4' => array(
+        ],
+        'JMS\FooBundle\Entity\User4' => [
             'id' => 'security.encoder.foo',
-        ),
-        'JMS\FooBundle\Entity\User5' => array(
+        ],
+        'JMS\FooBundle\Entity\User5' => [
             'algorithm' => 'pbkdf2',
             'hash_algorithm' => 'sha1',
             'encode_as_base64' => false,
             'iterations' => 5,
             'key_length' => 30,
-        ),
-        'JMS\FooBundle\Entity\User6' => array(
+        ],
+        'JMS\FooBundle\Entity\User6' => [
             'algorithm' => 'bcrypt',
             'cost' => 15,
-        ),
-    ),
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-        'digest' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'),
-                ),
-            ),
-        ),
-        'basic' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'),
-                    'bar' => array('password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => array('ROLE_USER', 'ROLE_ADMIN')),
-                ),
-            ),
-        ),
-        'service' => array(
+        ],
+    ],
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+        'digest' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER, ROLE_ADMIN'],
+                ],
+            ],
+        ],
+        'basic' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => 'ROLE_SUPER_ADMIN'],
+                    'bar' => ['password' => '0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33', 'roles' => ['ROLE_USER', 'ROLE_ADMIN']],
+                ],
+            ],
+        ],
+        'service' => [
             'id' => 'user.manager',
-        ),
-        'chain' => array(
-            'chain' => array(
-                'providers' => array('service', 'basic'),
-            ),
-        ),
-    ),
+        ],
+        'chain' => [
+            'chain' => [
+                'providers' => ['service', 'basic'],
+            ],
+        ],
+    ],
 
-    'firewalls' => array(
-        'simple' => array('provider' => 'default', 'pattern' => '/login', 'security' => false),
-        'secure' => array('stateless' => true,
+    'firewalls' => [
+        'simple' => ['provider' => 'default', 'pattern' => '/login', 'security' => false],
+        'secure' => ['stateless' => true,
             'provider' => 'default',
             'http_basic' => true,
             'form_login' => true,
@@ -70,34 +70,34 @@
             'x509' => true,
             'remote_user' => true,
             'logout' => true,
-            'remember_me' => array('secret' => 'TheSecret'),
+            'remember_me' => ['secret' => 'TheSecret'],
             'user_checker' => null,
-        ),
-        'host' => array(
+        ],
+        'host' => [
             'provider' => 'default',
             'pattern' => '/test',
             'host' => 'foo\\.example\\.org',
-            'methods' => array('GET', 'POST'),
+            'methods' => ['GET', 'POST'],
             'anonymous' => true,
             'http_basic' => true,
-        ),
-        'with_user_checker' => array(
+        ],
+        'with_user_checker' => [
             'provider' => 'default',
             'user_checker' => 'app.user_checker',
             'anonymous' => true,
             'http_basic' => true,
-        ),
-    ),
+        ],
+    ],
 
-    'access_control' => array(
-        array('path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => array('get', 'POST'), 'port' => 8000),
-        array('path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'),
-        array('path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"),
-    ),
+    'access_control' => [
+        ['path' => '/blog/524', 'role' => 'ROLE_USER', 'requires_channel' => 'https', 'methods' => ['get', 'POST'], 'port' => 8000],
+        ['path' => '/blog/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'],
+        ['path' => '/blog/524', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY', 'allow_if' => "token.getUsername() matches '/^admin/'"],
+    ],
 
-    'role_hierarchy' => array(
+    'role_hierarchy' => [
         'ROLE_ADMIN' => 'ROLE_USER',
-        'ROLE_SUPER_ADMIN' => array('ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'),
+        'ROLE_SUPER_ADMIN' => ['ROLE_USER', 'ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'],
         'ROLE_REMOTE' => 'ROLE_USER,ROLE_ADMIN',
-    ),
-));
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/simple_auth.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/simple_auth.php
index a125dec6b5e1..05829defd119 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/simple_auth.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/simple_auth.php
@@ -1,21 +1,21 @@
 <?php
 
-$container->loadFromExtension('security', array(
-    'providers' => array(
-        'default' => array(
-            'memory' => array(
-                'users' => array(
-                    'foo' => array('password' => 'foo', 'roles' => 'ROLE_USER'),
-                ),
-            ),
-        ),
-    ),
+$container->loadFromExtension('security', [
+    'providers' => [
+        'default' => [
+            'memory' => [
+                'users' => [
+                    'foo' => ['password' => 'foo', 'roles' => 'ROLE_USER'],
+                ],
+            ],
+        ],
+    ],
 
-    'firewalls' => array(
-        'simple_auth' => array(
+    'firewalls' => [
+        'simple_auth' => [
             'provider' => 'default',
             'anonymous' => true,
-            'simple_form' => array('authenticator' => 'simple_authenticator'),
-        ),
-    ),
-));
+            'simple_form' => ['authenticator' => 'simple_authenticator'],
+        ],
+    ],
+]);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
index 50c2a64cd61c..3145d035720f 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
@@ -352,22 +352,22 @@ public function testRememberMeCookieInheritFrameworkSessionCookie($config, $same
         $container = $this->getRawContainer();
 
         $container->registerExtension(new FrameworkExtension());
-        $container->setParameter('kernel.bundles_metadata', array());
+        $container->setParameter('kernel.bundles_metadata', []);
         $container->setParameter('kernel.project_dir', __DIR__);
         $container->setParameter('kernel.root_dir', __DIR__);
         $container->setParameter('kernel.cache_dir', __DIR__);
 
-        $container->loadFromExtension('security', array(
-            'firewalls' => array(
-                'default' => array(
+        $container->loadFromExtension('security', [
+            'firewalls' => [
+                'default' => [
                     'form_login' => null,
-                    'remember_me' => array('secret' => 'baz'),
-                ),
-            ),
-        ));
-        $container->loadFromExtension('framework', array(
+                    'remember_me' => ['secret' => 'baz'],
+                ],
+            ],
+        ]);
+        $container->loadFromExtension('framework', [
             'session' => $config,
-        ));
+        ]);
 
         $container->compile();
 
@@ -379,22 +379,22 @@ public function testRememberMeCookieInheritFrameworkSessionCookie($config, $same
 
     public function sessionConfigurationProvider()
     {
-        return array(
-            array(
+        return [
+            [
                 false,
                 null,
                 false,
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'cookie_secure' => true,
                     'cookie_samesite' => 'lax',
                     'save_path' => null,
-                ),
+                ],
                 'lax',
                 true,
-            ),
-        );
+            ],
+        ];
     }
 
     protected function getRawContainer()
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/EventListener/VoteListenerTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/EventListener/VoteListenerTest.php
index 52333c85de60..3406e16503f4 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/EventListener/VoteListenerTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/EventListener/VoteListenerTest.php
@@ -26,15 +26,15 @@ public function testOnVoterVote()
         $traceableAccessDecisionManager = $this
             ->getMockBuilder(TraceableAccessDecisionManager::class)
             ->disableOriginalConstructor()
-            ->setMethods(array('addVoterVote'))
+            ->setMethods(['addVoterVote'])
             ->getMock();
 
         $traceableAccessDecisionManager
             ->expects($this->once())
             ->method('addVoterVote')
-            ->with($voter, array('myattr1', 'myattr2'), VoterInterface::ACCESS_GRANTED);
+            ->with($voter, ['myattr1', 'myattr2'], VoterInterface::ACCESS_GRANTED);
 
         $sut = new VoteListener($traceableAccessDecisionManager);
-        $sut->onVoterVote(new VoteEvent($voter, 'mysubject', array('myattr1', 'myattr2'), VoterInterface::ACCESS_GRANTED));
+        $sut->onVoterVote(new VoteEvent($voter, 'mysubject', ['myattr1', 'myattr2'], VoterInterface::ACCESS_GRANTED));
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/JsonLoginLdapTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/JsonLoginLdapTest.php
index 09b22e2ffae7..6b7dca4b422f 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/JsonLoginLdapTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/JsonLoginLdapTest.php
@@ -17,7 +17,7 @@ class JsonLoginLdapTest extends WebTestCase
 {
     public function testKernelBoot()
     {
-        $kernel = self::createKernel(array('test_case' => 'JsonLoginLdap', 'root_config' => 'config.yml'));
+        $kernel = self::createKernel(['test_case' => 'JsonLoginLdap', 'root_config' => 'config.yml']);
         $kernel->boot();
 
         $this->assertInstanceOf(Kernel::class, $kernel);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/JsonLoginLdap/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/JsonLoginLdap/bundles.php
index 336bd003a292..e3aef52a2e09 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/JsonLoginLdap/bundles.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/JsonLoginLdap/bundles.php
@@ -9,8 +9,8 @@
  * file that was distributed with this source code.
  */
 
-return array(
+return [
     new Symfony\Bundle\SecurityBundle\SecurityBundle(),
     new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
     new Symfony\Bundle\TwigBundle\TwigBundle(),
-);
+];
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
index ed8b655d7641..b65b8af4e967 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
@@ -46,7 +46,7 @@ public function testGetters()
      */
     public function testFirewallConfigAs3rdConstructorArgument()
     {
-        new FirewallContext(array(), $this->getExceptionListenerMock(), new FirewallConfig('main', 'user_checker', 'request_matcher'));
+        new FirewallContext([], $this->getExceptionListenerMock(), new FirewallConfig('main', 'user_checker', 'request_matcher'));
     }
 
     private function getExceptionListenerMock()
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
index 1ed2272e56c5..b635a752aba8 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
@@ -54,11 +54,11 @@ private function addFormThemesSection(ArrayNodeDefinition $rootNode)
                 ->arrayNode('form_themes')
                     ->addDefaultChildrenIfNoneSet()
                     ->prototype('scalar')->defaultValue('form_div_layout.html.twig')->end()
-                    ->example(array('@My/form.html.twig'))
+                    ->example(['@My/form.html.twig'])
                     ->validate()
                         ->ifTrue(function ($v) { return !\in_array('form_div_layout.html.twig', $v); })
                         ->then(function ($v) {
-                            return array_merge(array('form_div_layout.html.twig'), $v);
+                            return array_merge(['form_div_layout.html.twig'], $v);
                         })
                     ->end()
                 ->end()
@@ -74,7 +74,7 @@ private function addGlobalsSection(ArrayNodeDefinition $rootNode)
                 ->arrayNode('globals')
                     ->normalizeKeys(false)
                     ->useAttributeAsKey('key')
-                    ->example(array('foo' => '"@bar"', 'pi' => 3.14))
+                    ->example(['foo' => '"@bar"', 'pi' => 3.14])
                     ->prototype('array')
                         ->normalizeKeys(false)
                         ->beforeNormalization()
@@ -84,7 +84,7 @@ private function addGlobalsSection(ArrayNodeDefinition $rootNode)
                                     return substr($v, 1);
                                 }
 
-                                return array('id' => substr($v, 1), 'type' => 'service');
+                                return ['id' => substr($v, 1), 'type' => 'service'];
                             })
                         ->end()
                         ->beforeNormalization()
@@ -93,18 +93,18 @@ private function addGlobalsSection(ArrayNodeDefinition $rootNode)
                                     $keys = array_keys($v);
                                     sort($keys);
 
-                                    return $keys !== array('id', 'type') && $keys !== array('value');
+                                    return $keys !== ['id', 'type'] && $keys !== ['value'];
                                 }
 
                                 return true;
                             })
-                            ->then(function ($v) { return array('value' => $v); })
+                            ->then(function ($v) { return ['value' => $v]; })
                         ->end()
                         ->children()
                             ->scalarNode('id')->end()
                             ->scalarNode('type')
                                 ->validate()
-                                    ->ifNotInArray(array('service'))
+                                    ->ifNotInArray(['service'])
                                     ->thenInvalid('The %s type is not supported')
                                 ->end()
                             ->end()
@@ -147,7 +147,7 @@ private function addTwigOptions(ArrayNodeDefinition $rootNode)
                     ->beforeNormalization()
                         ->always()
                         ->then(function ($paths) {
-                            $normalized = array();
+                            $normalized = [];
                             foreach ($paths as $path => $namespace) {
                                 if (\is_array($namespace)) {
                                     // xml
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
index fbe05fd81845..a9db7bf6a861 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/TwigExtension.php
@@ -57,10 +57,10 @@ public function load(array $configs, ContainerBuilder $container)
             if (isset($config['globals'])) {
                 foreach ($config['globals'] as $name => $value) {
                     if (\is_array($value) && isset($value['key'])) {
-                        $configs[$key]['globals'][$name] = array(
+                        $configs[$key]['globals'][$name] = [
                             'key' => $name,
                             'value' => $value,
-                        );
+                        ];
                     }
                 }
             }
@@ -93,9 +93,9 @@ public function load(array $configs, ContainerBuilder $container)
         // register user-configured paths
         foreach ($config['paths'] as $path => $namespace) {
             if (!$namespace) {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path]);
             } else {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, $namespace]);
             }
         }
 
@@ -106,12 +106,12 @@ public function load(array $configs, ContainerBuilder $container)
         foreach ($this->getBundleTemplatePaths($container, $config) as $name => $paths) {
             $namespace = $this->normalizeBundleName($name);
             foreach ($paths as $path) {
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, $namespace]);
             }
 
             if ($paths) {
                 // the last path must be the bundle views directory
-                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, '!'.$namespace));
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$path, '!'.$namespace]);
             }
         }
 
@@ -120,12 +120,12 @@ public function load(array $configs, ContainerBuilder $container)
                 @trigger_error(sprintf('Templates directory "%s" is deprecated since Symfony 4.2, use "%s" instead.', $dir, $defaultTwigPath), E_USER_DEPRECATED);
             }
 
-            $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($dir));
+            $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$dir]);
         }
         $container->addResource(new FileExistenceResource($dir));
 
         if (file_exists($defaultTwigPath)) {
-            $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($defaultTwigPath));
+            $twigFilesystemLoaderDefinition->addMethodCall('addPath', [$defaultTwigPath]);
         }
         $container->addResource(new FileExistenceResource($defaultTwigPath));
 
@@ -133,9 +133,9 @@ public function load(array $configs, ContainerBuilder $container)
             $def = $container->getDefinition('twig');
             foreach ($config['globals'] as $key => $global) {
                 if (isset($global['type']) && 'service' === $global['type']) {
-                    $def->addMethodCall('addGlobal', array($key, new Reference($global['id'])));
+                    $def->addMethodCall('addGlobal', [$key, new Reference($global['id'])]);
                 } else {
-                    $def->addMethodCall('addGlobal', array($key, $global['value']));
+                    $def->addMethodCall('addGlobal', [$key, $global['value']]);
                 }
             }
         }
@@ -147,7 +147,7 @@ public function load(array $configs, ContainerBuilder $container)
         );
 
         if (isset($config['autoescape_service']) && isset($config['autoescape_service_method'])) {
-            $config['autoescape'] = array(new Reference($config['autoescape_service']), $config['autoescape_service_method']);
+            $config['autoescape'] = [new Reference($config['autoescape_service']), $config['autoescape_service_method']];
         }
         unset($config['autoescape_service'], $config['autoescape_service_method']);
 
@@ -167,7 +167,7 @@ public function load(array $configs, ContainerBuilder $container)
 
     private function getBundleTemplatePaths(ContainerBuilder $container, array $config)
     {
-        $bundleHierarchy = array();
+        $bundleHierarchy = [];
         foreach ($container->getParameter('kernel.bundles_metadata') as $name => $bundle) {
             $defaultOverrideBundlePath = $container->getParameterBag()->resolveValue($config['default_path']).'/bundles/'.$name;
 
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
index 3666ef6d339a..0a227930bd1e 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php
@@ -29,9 +29,9 @@ public function testLoadEmptyConfiguration()
     {
         $container = $this->createContainer();
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array(
+        $container->loadFromExtension('twig', [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-        ));
+        ]);
         $this->compileContainer($container);
 
         $this->assertEquals('Twig\Environment', $container->getDefinition('twig')->getClass(), '->load() loads the twig.xml file');
@@ -74,9 +74,9 @@ public function testLoadFullConfiguration($format)
         $this->assertEquals(3.14, $calls[4][1][1], '->load() registers variables as Twig globals');
 
         // Yaml and Php specific configs
-        if (\in_array($format, array('yml', 'php'))) {
+        if (\in_array($format, ['yml', 'php'])) {
             $this->assertEquals('bad', $calls[5][1][0], '->load() registers variables as Twig globals');
-            $this->assertEquals(array('key' => 'foo'), $calls[5][1][1], '->load() registers variables as Twig globals');
+            $this->assertEquals(['key' => 'foo'], $calls[5][1][1], '->load() registers variables as Twig globals');
         }
 
         // Twig options
@@ -101,7 +101,7 @@ public function testLoadCustomTemplateEscapingGuesserConfiguration($format)
         $this->compileContainer($container);
 
         $options = $container->getDefinition('twig')->getArgument(1);
-        $this->assertEquals(array(new Reference('my_project.some_bundle.template_escaping_guesser'), 'guess'), $options['autoescape']);
+        $this->assertEquals([new Reference('my_project.some_bundle.template_escaping_guesser'), 'guess'], $options['autoescape']);
     }
 
     /**
@@ -140,8 +140,8 @@ public function testLoadCustomDateFormats($fileFormat)
 
     public function testGlobalsWithDifferentTypesAndValues()
     {
-        $globals = array(
-            'array' => array(),
+        $globals = [
+            'array' => [],
             'false' => false,
             'float' => 2.0,
             'integer' => 3,
@@ -149,14 +149,14 @@ public function testGlobalsWithDifferentTypesAndValues()
             'object' => new \stdClass(),
             'string' => 'foo',
             'true' => true,
-        );
+        ];
 
         $container = $this->createContainer();
         $container->registerExte
10000
nsion(new TwigExtension());
-        $container->loadFromExtension('twig', array(
+        $container->loadFromExtension('twig', [
             'globals' => $globals,
             'strict_variables' => false, // // to be removed in 5.0 relying on default
-        ));
+        ]);
         $this->compileContainer($container);
 
         $calls = $container->getDefinition('twig')->getMethodCalls();
@@ -180,24 +180,24 @@ public function testTwigLoaderPaths($format)
         $this->compileContainer($container);
 
         $def = $container->getDefinition('twig.loader.native_filesystem');
-        $paths = array();
+        $paths = [];
         foreach ($def->getMethodCalls() as $call) {
             if ('addPath' === $call[0] && false === strpos($call[1][0], 'Form')) {
                 $paths[] = $call[1];
             }
         }
 
-        $this->assertEquals(array(
-            array('path1'),
-            array('path2'),
-            array('namespaced_path1', 'namespace1'),
-            array('namespaced_path2', 'namespace2'),
-            array('namespaced_path3', 'namespace3'),
-            array(__DIR__.'/Fixtures/templates/bundles/TwigBundle', 'Twig'),
-            array(realpath(__DIR__.'/../..').'/Resources/views', 'Twig'),
-            array(realpath(__DIR__.'/../..').'/Resources/views', '!Twig'),
-            array(__DIR__.'/Fixtures/templates'),
-        ), $paths);
+        $this->assertEquals([
+            ['path1'],
+            ['path2'],
+            ['namespaced_path1', 'namespace1'],
+            ['namespaced_path2', 'namespace2'],
+            ['namespaced_path3', 'namespace3'],
+            [__DIR__.'/Fixtures/templates/bundles/TwigBundle', 'Twig'],
+            [realpath(__DIR__.'/../..').'/Resources/views', 'Twig'],
+            [realpath(__DIR__.'/../..').'/Resources/views', '!Twig'],
+            [__DIR__.'/Fixtures/templates'],
+        ], $paths);
     }
 
     /**
@@ -215,35 +215,35 @@ public function testLegacyTwigLoaderPaths($format)
         $this->compileContainer($container);
 
         $def = $container->getDefinition('twig.loader.native_filesystem');
-        $paths = array();
+        $paths = [];
         foreach ($def->getMethodCalls() as $call) {
             if ('addPath' === $call[0] && false === strpos($call[1][0], 'Form')) {
                 $paths[] = $call[1];
             }
         }
 
-        $this->assertEquals(array(
-            array('path1'),
-            array('path2'),
-            array('namespaced_path1', 'namespace1'),
-            array('namespaced_path2', 'namespace2'),
-            array('namespaced_path3', 'namespace3'),
-            array(__DIR__.'/../Fixtures/templates/Resources/TwigBundle/views', 'Twig'),
-            array(__DIR__.'/Fixtures/templates/bundles/TwigBundle', 'Twig'),
-            array(realpath(__DIR__.'/../..').'/Resources/views', 'Twig'),
-            array(realpath(__DIR__.'/../..').'/Resources/views', '!Twig'),
-            array(__DIR__.'/../Fixtures/templates/Resources/views'),
-            array(__DIR__.'/Fixtures/templates'),
-        ), $paths);
+        $this->assertEquals([
+            ['path1'],
+            ['path2'],
+            ['namespaced_path1', 'namespace1'],
+            ['namespaced_path2', 'namespace2'],
+            ['namespaced_path3', 'namespace3'],
+            [__DIR__.'/../Fixtures/templates/Resources/TwigBundle/views', 'Twig'],
+            [__DIR__.'/Fixtures/templates/bundles/TwigBundle', 'Twig'],
+            [realpath(__DIR__.'/../..').'/Resources/views', 'Twig'],
+            [realpath(__DIR__.'/../..').'/Resources/views', '!Twig'],
+            [__DIR__.'/../Fixtures/templates/Resources/views'],
+            [__DIR__.'/Fixtures/templates'],
+        ], $paths);
     }
 
     public function getFormats()
     {
-        return array(
-            array('php'),
-            array('yml'),
-            array('xml'),
-        );
+        return [
+            ['php'],
+            ['yml'],
+            ['xml'],
+        ];
     }
 
     /**
@@ -257,9 +257,9 @@ public function testStopwatchExtensionAvailability($debug, $stopwatchEnabled, $e
             $container->register('debug.stopwatch', 'Symfony\Component\Stopwatch\Stopwatch');
         }
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array(
+        $container->loadFromExtension('twig', [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-        ));
+        ]);
         $container->setAlias('test.twig.extension.debug.stopwatch', 'twig.extension.debug.stopwatch')->setPublic(true);
         $this->compileContainer($container);
 
@@ -272,21 +272,21 @@ public function testStopwatchExtensionAvailability($debug, $stopwatchEnabled, $e
 
     public function stopwatchExtensionAvailabilityProvider()
     {
-        return array(
-            'debug-and-stopwatch-enabled' => array(true, true, true),
-            'only-stopwatch-enabled' => array(false, true, false),
-            'only-debug-enabled' => array(true, false, false),
-            'debug-and-stopwatch-disabled' => array(false, false, false),
-        );
+        return [
+            'debug-and-stopwatch-enabled' => [true, true, true],
+            'only-stopwatch-enabled' => [false, true, false],
+            'only-debug-enabled' => [true, false, false],
+            'debug-and-stopwatch-disabled' => [false, false, false],
+        ];
     }
 
     public function testRuntimeLoader()
     {
         $container = $this->createContainer();
         $container->registerExtension(new TwigExtension());
-        $container->loadFromExtension('twig', array(
+        $container->loadFromExtension('twig', [
             'strict_variables' => false, // to be removed in 5.0 relying on default
-        ));
+        ]);
         $container->setParameter('kernel.environment', 'test');
         $container->setParameter('debug.file_link_format', 'test');
         $container->setParameter('foo', 'FooClass');
@@ -295,7 +295,7 @@ public function testRuntimeLoader()
         $container->register('templating.name_parser', 'FooClass');
         $container->register('foo', '%foo%')->addTag('twig.runtime');
         $container->addCompilerPass(new RuntimeLoaderPass(), PassConfig::TYPE_BEFORE_REMOVING);
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
 
         $loader = $container->getDefinition('twig.runtime_loader');
@@ -308,30 +308,30 @@ public function testRuntimeLoader()
 
     private function createContainer(string $rootDir = __DIR__.'/Fixtures')
     {
-        $container = new ContainerBuilder(new ParameterBag(array(
+        $container = new ContainerBuilder(new ParameterBag([
             'kernel.cache_dir' => __DIR__,
             'kernel.root_dir' => $rootDir,
             'kernel.project_dir' => __DIR__,
             'kernel.charset' => 'UTF-8',
             'kernel.debug' => false,
-            'kernel.bundles' => array(
+            'kernel.bundles' => [
                 'TwigBundle' => 'Symfony\\Bundle\\TwigBundle\\TwigBundle',
-            ),
-            'kernel.bundles_metadata' => array(
-                'TwigBundle' => array(
+            ],
+            'kernel.bundles_metadata' => [
+                'TwigBundle' => [
                     'namespace' => 'Symfony\\Bundle\\TwigBundle',
                     'path' => realpath(__DIR__.'/../..'),
-                ),
-            ),
-        )));
+                ],
+            ],
+        ]));
 
         return $container;
     }
 
     private function compileContainer(ContainerBuilder $container)
     {
-        $container->getCompilerPassConfig()->setOptimizationPasses(array());
-        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->getCompilerPassConfig()->setOptimizationPasses([]);
+        $container->getCompilerPassConfig()->setRemovingPasses([]);
         $container->compile();
     }
 
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
index 8c0495028a8e..f1e77090721b 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
@@ -55,21 +55,21 @@ class NoTemplatingEntryKernel extends Kernel
 {
     public function registerBundles()
     {
-        return array(new FrameworkBundle(), new TwigBundle());
+        return [new FrameworkBundle(), new TwigBundle()];
     }
 
     public function registerContainerConfiguration(LoaderInterface $loader)
     {
         $loader->load(function ($container) {
             $container
-                ->loadFromExtension('framework', array(
+                ->loadFromExtension('framework', [
                     'secret' => '$ecret',
-                    'form' => array('enabled' => false),
-                ))
-                ->loadFromExtension('twig', array(
+                    'form' => ['enabled' => false],
+                ])
+                ->loadFromExtension('twig', [
                     'strict_variables' => false, // to be removed in 5.0 relying on default
                     'default_path' => __DIR__.'/templates',
-                ))
+                ])
             ;
         });
     }
diff --git a/src/Symfony/Bundle/WebServerBundle/WebServer.php b/src/Symfony/Bundle/WebServerBundle/WebServer.php
index 1195853b08f2..5ea058fa2628 100644
--- a/src/Symfony/Bundle/WebServerBundle/WebServer.php
+++ b/src/Symfony/Bundle/WebServerBundle/WebServer.php
@@ -150,14 +150,14 @@ private function createServerProcess(WebServerConfig $config)
             throw new \RuntimeException('Unable to find the PHP binary.');
         }
 
-        $xdebugArgs = ini_get('xdebug.profiler_enable_trigger') ? array('-dxdebug.profiler_enable_trigger=1') : array();
+        $xdebugArgs = ini_get('xdebug.profiler_enable_trigger') ? ['-dxdebug.profiler_enable_trigger=1'] : [];
 
-        $process = new Process(array_merge(array($binary), $finder->findArguments(), $xdebugArgs, array('-dvariables_order=EGPCS', '-S', $config->getAddress(), $config->getRouter())));
+        $process = new Process(array_merge([$binary], $finder->findArguments(), $xdebugArgs, ['-dvariables_order=EGPCS', '-S', $config->getAddress(), $config->getRouter()]));
         $process->setWorkingDirectory($config->getDocumentRoot());
         $process->setTimeout(null);
 
         if (\in_array('APP_ENV', explode(',', getenv('SYMFONY_DOTENV_VARS')))) {
-            $process->setEnv(array('APP_ENV' => false));
+            $process->setEnv(['APP_ENV' => false]);
             $process->inheritEnvironmentVariables();
         }
 
diff --git a/src/Symfony/Component/Asset/Tests/UrlPackageTest.php b/src/Symfony/Component/Asset/Tests/UrlPackageTest.php
index ff6d5f49ec1e..097c1a891d36 100644
--- a/src/Symfony/Component/Asset/Tests/UrlPackageTest.php
+++ b/src/Symfony/Component/Asset/Tests/UrlPackageTest.php
@@ -29,33 +29,33 @@ public function testGetUrl($baseUrls, $format, $path, $expected)
 
     public function getConfigs()
     {
-        return array(
-            array('http://example.net', '', 'http://example.com/foo', 'http://example.com/foo'),
-            array('http://example.net', '', 'https://example.com/foo', 'https://example.com/foo'),
-            array('http://example.net', '', '//example.com/foo', '//example.com/foo'),
-            array('file:///example/net', '', 'file:///example/com/foo', 'file:///example/com/foo'),
-            array('ftp://example.net', '', 'ftp://example.com', 'ftp://example.com'),
-
-            array('http://example.com', '', '/foo', 'http://example.com/foo?v1'),
-            array('http://example.com', '', 'foo', 'http://example.com/foo?v1'),
-            array('http://example.com/', '', 'foo', 'http://example.com/foo?v1'),
-            array('http://example.com/foo', '', 'foo', 'http://example.com/foo/foo?v1'),
-            array('http://example.com/foo/', '', 'foo', 'http://example.com/foo/foo?v1'),
-            array('file:///example/com/foo/', '', 'foo', 'file:///example/com/foo/foo?v1'),
-
-            array(array('http://example.com'), '', '/foo', 'http://example.com/foo?v1'),
-            array(array('http://example.com', 'http://example.net'), '', '/foo', 'http://example.com/foo?v1'),
-            array(array('http://example.com', 'http://example.net'), '', '/fooa', 'http://example.net/fooa?v1'),
-            array(array('file:///example/com', 'file:///example/net'), '', '/foo', 'file:///example/com/foo?v1'),
-            array(array('ftp://example.com', 'ftp://example.net'), '', '/fooa', 'ftp://example.net/fooa?v1'),
-
-            array('http://example.com', 'version-%2$s/%1$s', '/foo', 'http://example.com/version-v1/foo'),
-            array('http://example.com', 'version-%2$s/%1$s', 'foo', 'http://example.com/version-v1/foo'),
-            array('http://example.com', 'version-%2$s/%1$s', 'foo/', 'http://example.com/version-v1/foo/'),
-            array('http://example.com', 'version-%2$s/%1$s', '/foo/', 'http://example.com/version-v1/foo/'),
-            array('file:///example/com', 'version-%2$s/%1$s', '/foo/', 'file:///example/com/version-v1/foo/'),
-            array('ftp://example.com', 'version-%2$s/%1$s', '/foo/', 'ftp://example.com/version-v1/foo/'),
-        );
+        return [
+            ['http://example.net', '', 'http://example.com/foo', 'http://example.com/foo'],
+            ['http://example.net', '', 'https://example.com/foo', 'https://example.com/foo'],
+            ['http://example.net', '', '//example.com/foo', '//example.com/foo'],
+            ['file:///example/net', '', 'file:///example/com/foo', 'file:///example/com/foo'],
+            ['ftp://example.net', '', 'ftp://example.com', 'ftp://example.com'],
+
+            ['http://example.com', '', '/foo', 'http://example.com/foo?v1'],
+            ['http://example.com', '', 'foo', 'http://example.com/foo?v1'],
+            ['http://example.com/', '', 'foo', 'http://example.com/foo?v1'],
+            ['http://example.com/foo', '', 'foo', 'http://example.com/foo/foo?v1'],
+            ['http://example.com/foo/', '', 'foo', 'http://example.com/foo/foo?v1'],
+            ['file:///example/com/foo/', '', 'foo', 'file:///example/com/foo/foo?v1'],
+
+            [['http://example.com'], '', '/foo', 'http://example.com/foo?v1'],
+            [['http://example.com', 'http://example.net'], '', '/foo', 'http://example.com/foo?v1'],
+            [['http://example.com', 'http://example.net'], '', '/fooa', 'http://example.net/fooa?v1'],
+            [['file:///example/com', 'file:///example/net'], '', '/foo', 'file:///example/com/foo?v1'],
+            [['ftp://example.com', 'ftp://example.net'], '', '/fooa', 'ftp://example.net/fooa?v1'],
+
+            ['http://example.com', 'version-%2$s/%1$s', '/foo', 'http://example.com/version-v1/foo'],
+            ['http://example.com', 'version-%2$s/%1$s', 'foo', 'http://example.com/version-v1/foo'],
+            ['http://example.com', 'version-%2$s/%1$s', 'foo/', 'http://example.com/version-v1/foo/'],
+            ['http://example.com', 'version-%2$s/%1$s', '/foo/', 'http://example.com/version-v1/foo/'],
+            ['file:///example/com', 'version-%2$s/%1$s', '/foo/', 'file:///example/com/version-v1/foo/'],
+            ['ftp://example.com', 'version-%2$s/%1$s', '/foo/', 'ftp://example.com/version-v1/foo/'],
+        ];
     }
 
     /**
@@ -70,18 +70,18 @@ public function testGetUrlWithContext($secure, $baseUrls, $format, $path, $expec
 
     public function getContextConfigs()
     {
-        return array(
-            array(false, 'http://example.com', '', 'foo', 'http://example.com/foo?v1'),
-            array(false, array('http://example.com'), '', 'foo', 'http://example.com/foo?v1'),
-            array(false, array('http://example.com', 'https://example.com'), '', 'foo', 'http://example.com/foo?v1'),
-            array(false, array('http://example.com', 'https://example.com'), '', 'fooa', 'https://example.com/fooa?v1'),
-            array(false, array('http://example.com/bar'), '', 'foo', 'http://example.com/bar/foo?v1'),
-            array(false, array('http://example.com/bar/'), '', 'foo', 'http://example.com/bar/foo?v1'),
-            array(false, array('//example.com/bar/'), '', 'foo', '//example.com/bar/foo?v1'),
-
-            array(true, array('http://example.com'), '', 'foo', 'http://example.com/foo?v1'),
-            array(true, array('http://example.com', 'https://example.com'), '', 'foo', 'https://example.com/foo?v1'),
-        );
+        return [
+            [false, 'http://example.com', '', 'foo', 'http://example.com/foo?v1'],
+            [false, ['http://example.com'], '', 'foo', 'http://example.com/foo?v1'],
+            [false, ['http://example.com', 'https://example.com'], '', 'foo', 'http://example.com/foo?v1'],
+            [false, ['http://example.com', 'https://example.com'], '', 'fooa', 'https://example.com/fooa?v1'],
+            [false, ['http://example.com/bar'], '', 'foo', 'http://example.com/bar/foo?v1'],
+            [false, ['http://example.com/bar/'], '', 'foo', 'http://example.com/bar/foo?v1'],
+            [false, ['//example.com/bar/'], '', 'foo', '//example.com/bar/foo?v1'],
+
+            [true, ['http://example.com'], '', 'foo', 'http://example.com/foo?v1'],
+            [true, ['http://example.com', 'https://example.com'], '', 'foo', 'https://example.com/foo?v1'],
+        ];
     }
 
     public function testVersionStrategyGivesAbsoluteURL()
@@ -100,7 +100,7 @@ public function testVersionStrategyGivesAbsoluteURL()
      */
     public function testNoBaseUrls()
     {
-        new UrlPackage(array(), new EmptyVersionStrategy());
+        new UrlPackage([], new EmptyVersionStrategy());
     }
 
     /**
@@ -115,10 +115,10 @@ public function testWrongBaseUrl($baseUrls)
 
     public function getWrongBaseUrlConfig()
     {
-        return array(
-            array('not-a-url'),
-            array('not-a-url-with-query?query=://'),
-        );
+        return [
+            ['not-a-url'],
+            ['not-a-url-with-query?query=://'],
+        ];
     }
 
     private function getContext($secure)
diff --git a/src/Symfony/Component/BrowserKit/Client.php b/src/Symfony/Component/BrowserKit/Client.php
index 7658967fab3c..c2a94af5ac0c 100644
--- a/src/Symfony/Component/BrowserKit/Client.php
+++ b/src/Symfony/Component/BrowserKit/Client.php
@@ -334,7 +334,7 @@ public function submit(Form $form, array $values = []/*, array $serverParameters
      * @param string $method           The HTTP method used to submit the form
      * @param array  $serverParameters These values override the ones stored in $_SERVER (HTTP headers must include a HTTP_ prefix as PHP does)
      */
-    public function submitForm(string $button, array $fieldValues = array(), string $method = 'POST', array $serverParameters = array()): Crawler
+    public function submitForm(string $button, array $fieldValues = [], string $method = 'POST', array $serverParameters = []): Crawler
     {
         if (null === $this->crawler) {
             throw new BadMethodCallException(sprintf('The "request()" method must be called before "%s()".', __METHOD__));
@@ -343,7 +343,7 @@ public function submitForm(string $button, array $fieldValues = array(), string
         $buttonNode = $this->crawler->selectButton($button);
         $form = $buttonNode->form($fieldValues, $method);
 
-        return $this->submit($form, array(), $serverParameters);
+        return $this->submit($form, [], $serverParameters);
     }
 
     /**
@@ -634,7 +634,7 @@ public function followRedirect()
     private function getMetaRefreshUrl(): ?string
     {
         $metaRefresh = $this->getCrawler()->filter('head meta[http-equiv="refresh"]');
-        foreach ($metaRefresh->extract(array('content')) as $content) {
+        foreach ($metaRefresh->extract(['content']) as $content) {
             if (preg_match('/^\s*0\s*;\s*URL\s*=\s*(?|\'([^\']++)|"([^"]++)|([^\'"].*))/i', $content, $m)) {
                 return str_replace("\t\r\n", '', rtrim($m[1]));
             }
diff --git a/src/Symfony/Component/BrowserKit/Cookie.php b/src/Symfony/Component/BrowserKit/Cookie.php
index 6efef3f1d83c..ee786e69c2b2 100644
--- a/src/Symfony/Component/BrowserKit/Cookie.php
+++ b/src/Symfony/Component/BrowserKit/Cookie.php
@@ -22,7 +22,7 @@ class Cookie
      * Handles dates as defined by RFC 2616 section 3.3.1, and also some other
      * non-standard, but common formats.
      */
-    private static $dateFormats = array(
+    private static $dateFormats = [
         'D, d M Y H:i:s T',
         'D, d-M-y H:i:s T',
         'D, d-M-Y H:i:s T',
@@ -30,7 +30,7 @@ class Cookie
         'D, d-m-Y H:i:s T',
         'D M j G:i:s Y',
         'D M d H:i:s Y T',
-    );
+    ];
 
     protected $name;
     protected $value;
@@ -136,7 +136,7 @@ public static function fromString($cookie, $url = null)
 
         list($name, $value) = explode('=', array_shift($parts), 2);
 
-        $values = array(
+        $values = [
             'name' => trim($name),
             'value' => trim($value),
             'expires' => null,
@@ -146,7 +146,7 @@ public static function fromString($cookie, $url = null)
             'httponly' => false,
             'passedRawValue' => true,
             'samesite' => null,
-        );
+        ];
 
         if (null !== $url) {
             if ((false === $urlParts = parse_url($url)) || !isset($urlParts['host'])) {
diff --git a/src/Symfony/Component/BrowserKit/Tests/ClientTest.php b/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
index 50d9ae35bd48..4f6355012b3c 100644
--- a/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
@@ -375,12 +375,12 @@ public function testSubmitForm()
         $client->setNextResponse(new Response('<html><form name="signup" action="/foo"><input type="text" name="username" value="the username" /><input type="password" name="password" value="the password" /><input type="submit" value="Register" /></form></html>'));
         $client->request('GET', 'http://www.example.com/foo/foobar');
 
-        $client->submitForm('Register', array(
+        $client->submitForm('Register', [
             'username' => 'new username',
             'password' => 'new password',
-        ), 'PUT', array(
+        ], 'PUT', [
             'HTTP_USER_AGENT' => 'Symfony User Agent',
-        ));
+        ]);
 
         $this->assertEquals('http://www.example.com/foo', $client->getRequest()->getUri(), '->submitForm() submit forms');
         $this->assertEquals('PUT', $client->getRequest()->getMethod(), '->submitForm() allows to change the method');
@@ -396,10 +396,10 @@ public function testSubmitFormNotFound()
         $client->request('GET', 'http://www.example.com/foo/foobar');
 
         try {
-            $client->submitForm('Register', array(
+            $client->submitForm('Register', [
                 'username' => 'username',
                 'password' => 'password',
-            ), 'POST');
+            ], 'POST');
             $this->fail('->submitForm() throws a \InvalidArgumentException if the form could not be found');
         } catch (\Exception $e) {
             $this->assertInstanceOf('InvalidArgumentException', $e, '->submitForm() throws a \InvalidArgumentException if the form could not be found');
@@ -670,23 +670,23 @@ public function testFollowMetaRefresh(string $content, string $expectedEndingUrl
 
     public function getTestsForMetaRefresh()
     {
-        return array(
-            array('<html><head><meta http-equiv="Refresh" content="4" /><meta http-equiv="refresh" content="0; URL=http://www.example.com/redirected"/></head></html>', 'http://www.example.com/redirected'),
-            array('<html><head><meta http-equiv="refresh" content="0;URL=http://www.example.com/redirected"/></head></html>', 'http://www.example.com/redirected'),
-            array('<html><head><meta http-equiv="refresh" content="0;URL=\'http://www.example.com/redirected\'"/></head></html>', 'http://www.example.com/redirected'),
-            array('<html><head><meta http-equiv="refresh" content=\'0;URL="http://www.example.com/redirected"\'/></head></html>', 'http://www.example.com/redirected'),
-            array('<html><head><meta http-equiv="refresh" content="0; URL = http://www.example.com/redirected"/></head></html>', 'http://www.example.com/redirected'),
-            array('<html><head><meta http-equiv="refresh" content="0;URL= http://www.example.com/redirected  "/></head></html>', 'http://www.example.com/redirected'),
-            array('<html><head><meta http-equiv="refresh" content="0;url=http://www.example.com/redirected  "/></head></html>', 'http://www.example.com/redirected'),
-            array('<html><head><noscript><meta http-equiv="refresh" content="0;URL=http://www.example.com/redirected"/></noscript></head></head></html>', 'http://www.example.com/redirected'),
+        return [
+            ['<html><head><meta http-equiv="Refresh" content="4" /><meta http-equiv="refresh" content="0; URL=http://www.example.com/redirected"/></head></html>', 'http://www.example.com/redirected'],
+            ['<html><head><meta http-equiv="refresh" content="0;URL=http://www.example.com/redirected"/></head></html>', 'http://www.example.com/redirected'],
+            ['<html><head><meta http-equiv="refresh" content="0;URL=\'http://www.example.com/redirected\'"/></head></html>', 'http://www.example.com/redirected'],
+            ['<html><head><meta http-equiv="refresh" content=\'0;URL="http://www.example.com/redirected"\'/></head></html>', 'http://www.example.com/redirected'],
+            ['<html><head><meta http-equiv="refresh" content="0; URL = http://www.example.com/redirected"/></head></html>', 'http://www.example.com/redirected'],
+            ['<html><head><meta http-equiv="refresh" content="0;URL= http://www.example.com/redirected  "/></head></html>', 'http://www.example.com/redirected'],
+            ['<html><head><meta http-equiv="refresh" content="0;url=http://www.example.com/redirected  "/></head></html>', 'http://www.example.com/redirected'],
+            ['<html><head><noscript><meta http-equiv="refresh" content="0;URL=http://www.example.com/redirected"/></noscript></head></head></html>', 'http://www.example.com/redirected'],
             // Non-zero timeout should not result in a redirect.
-            array('<html><head><meta http-equiv="refresh" content="4; URL=http://www.example.com/redirected"/></head></html>', 'http://www.example.com/foo/foobar'),
-            array('<html><body></body></html>', 'http://www.example.com/foo/foobar'),
+            ['<html><head><meta http-equiv="refresh" content="4; URL=http://www.example.com/redirected"/></head></html>', 'http://www.example.com/foo/foobar'],
+            ['<html><body></body></html>', 'http://www.example.com/foo/foobar'],
             // Invalid meta tag placement should not result in a redirect.
-            array('<html><body><meta http-equiv="refresh" content="0;url=http://www.example.com/redirected"/></body></html>', 'http://www.example.com/foo/foobar'),
+            ['<html><body><meta http-equiv="refresh" content="0;url=http://www.example.com/redirected"/></body></html>', 'http://www.example.com/foo/foobar'],
             // Valid meta refresh should not be followed if disabled.
-            array('<html><head><meta http-equiv="refresh" content="0;URL=http://www.example.com/redirected"/></head></html>', 'http://www.example.com/foo/foobar', false),
-        );
+            ['<html><head><meta http-equiv="refresh" content="0;URL=http://www.example.com/redirected"/></head></html>', 'http://www.example.com/foo/foobar', false],
+        ];
     }
 
     public function testBack()
@@ -927,7 +927,7 @@ protected function doRequest($request)
         return $response;
     }
 
-    public function submit(DomCrawlerForm $form, array $values = array())
+    public function submit(DomCrawlerForm $form, array $values = [])
     {
         return parent::submit($form, $values);
     }
diff --git a/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php b/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
index 571eb1468a87..d93ae711bdac 100644
--- a/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
@@ -64,12 +64,12 @@ function ($key, $value, $isHit) use ($defaultLifetime) {
             null,
             CacheItem::class
         );
-        $getId = \Closure::fromCallable(array($this, 'getId'));
+        $getId = \Closure::fromCallable([$this, 'getId']);
         $this->mergeByLifetime = \Closure::bind(
             function ($deferred, $namespace, &$expiredIds) use ($getId) {
-                $byLifetime = array();
+                $byLifetime = [];
                 $now = microtime(true);
-                $expiredIds = array();
+                $expiredIds = [];
 
                 foreach ($deferred as $key => $item) {
                     $key = (string) $key;
@@ -83,7 +83,7 @@ function ($deferred, $namespace, &$expiredIds) use ($getId) {
                         unset($metadata[CacheItem::METADATA_TAGS]);
                     }
                     // For compactness, expiry and creation duration are packed in the key of an array, using magic numbers as separators
-                    $byLifetime[$ttl][$getId($key)] = $metadata ? array("\x9D".pack('VN', (int) $metadata[CacheItem::METADATA_EXPIRY] - CacheItem::METADATA_EXPIRY_OFFSET, $metadata[CacheItem::METADATA_CTIME])."\x5F" => $item->value) : $item->value;
+                    $byLifetime[$ttl][$getId($key)] = $metadata ? ["\x9D".pack('VN', (int) $metadata[CacheItem::METADATA_EXPIRY] - CacheItem::METADATA_EXPIRY_OFFSET, $metadata[CacheItem::METADATA_CTIME])."\x5F" => $item->value] : $item->value;
                 }
 
                 return $byLifetime;
@@ -131,7 +131,7 @@ public static function createSystemCache($namespace, $defaultLifetime, $version,
         return $apcu;
     }
 
-    public static function createConnection($dsn, array $options = array())
+    public static function createConnection($dsn, array $options = [])
     {
         if (!\is_string($dsn)) {
             throw new InvalidArgumentException(sprintf('The %s() method expect argument #1 to be string, %s given.', __METHOD__, \gettype($dsn)));
@@ -161,11 +161,11 @@ public function getItem($key)
         $value = null;
 
         try {
-            foreach ($this->doFetch(array($id)) as $value) {
+            foreach ($this->doFetch([$id]) as $value) {
                 $isHit = true;
             }
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch key "{key}"', array('key' => $key, 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to fetch key "{key}"', ['key' => $key, 'exception' => $e]);
         }
 
         return $f($key, $value, $isHit);
@@ -174,12 +174,12 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         if ($this->deferred) {
             $this->commit();
         }
-        $ids = array();
+        $ids = [];
 
         foreach ($keys as $key) {
             $ids[] = $this->getId($key);
@@ -187,8 +187,8 @@ public function getItems(array $keys = array())
         try {
             $items = $this->doFetch($ids);
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch requested items', array('keys' => $keys, 'exception' => $e));
-            $items = array();
+            CacheItem::log($this->logger, 'Failed to fetch requested items', ['keys' => $keys, 'exception' => $e]);
+            $items = [];
         }
         $ids = array_combine($ids, $keys);
 
@@ -229,7 +229,7 @@ public function commit()
         $ok = true;
         $byLifetime = $this->mergeByLifetime;
         $byLifetime = $byLifetime($this->deferred, $this->namespace, $expiredIds);
-        $retry = $this->deferred = array();
+        $retry = $this->deferred = [];
 
         if ($expiredIds) {
             $this->doDelete($expiredIds);
@@ -239,7 +239,7 @@ public function commit()
                 $e = $this->doSave($values, $lifetime);
             } catch (\Exception $e) {
             }
-            if (true === $e || array() === $e) {
+            if (true === $e || [] === $e) {
                 continue;
             }
             if (\is_array($e) || 1 === \count($values)) {
@@ -247,7 +247,7 @@ public function commit()
                     $ok = false;
                     $v = $values[$id];
                     $type = \is_object($v) ? \get_class($v) : \gettype($v);
-                    CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => substr($id, \strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null));
+                    CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', ['key' => substr($id, \strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null]);
                 }
             } else {
                 foreach ($values as $id => $v) {
@@ -261,15 +261,15 @@ public function commit()
             foreach ($ids as $id) {
                 try {
                     $v = $byLifetime[$lifetime][$id];
-                    $e = $this->doSave(array($id => $v), $lifetime);
+                    $e = $this->doSave([$id => $v], $lifetime);
                 } catch (\Exception $e) {
                 }
-                if (true === $e || array() === $e) {
+                if (true === $e || [] === $e) {
                     continue;
                 }
                 $ok = false;
                 $type = \is_object($v) ? \get_class($v) : \gettype($v);
-                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => substr($id, \strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null));
+                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', ['key' => substr($id, \strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null]);
             }
         }
 
@@ -297,7 +297,7 @@ private function generateItems($items, &$keys)
                 yield $key => $f($key, $value, true);
             }
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to fetch requested items', array('keys' => array_values($keys), 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to fetch requested items', ['keys' => array_values($keys), 'exception' => $e]);
         }
 
         foreach ($keys as $key) {
diff --git a/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php b/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
index 97b6b7f78088..bbb1f846e4cf 100644
--- a/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
@@ -83,7 +83,7 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         foreach ($keys as $key) {
             if (!\is_string($key) || !isset($this->expiries[$key])) {
diff --git a/src/Symfony/Component/Cache/Adapter/ChainAdapter.php b/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
index 0417a22cd14c..80aa7c6d1bad 100644
--- a/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
@@ -33,7 +33,7 @@ class ChainAdapter implements AdapterInterface, CacheInterface, PruneableInterfa
 {
     use ContractsTrait;
 
-    private $adapters = array();
+    private $adapters = [];
     private $adapterCount;
     private $syncItem;
 
@@ -118,7 +118,7 @@ public function get(string $key, callable $callback, float $beta = null, array &
     public function getItem($key)
     {
         $syncItem = $this->syncItem;
-        $misses = array();
+        $misses = [];
 
         foreach ($this->adapters as $i => $adapter) {
             $item = $adapter->getItem($key);
@@ -140,15 +140,15 @@ public function getItem($key)
     /**
      * {@inheritdoc}
      */
-    public function getItems(array $keys = array())
+    public function getItems(array $keys = [])
     {
         return $this->generateItems($this->adapters[0]->getItems($keys), 0);
     }
 
     private function generateItems($items, $adapterIndex)
     {
-        $missing = array();
-        $misses = array();
+        $missing = [];
+        $misses = [];
         $nextAdapterIndex = $adapterIndex + 1;
         $nextAdapter = isset($this->adapters[$nextAdapterIndex]) ? $this->adapters[$nextAdapterIndex] : null;
 
diff --git a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
index eb35fb38a958..c2a18cdd4b7b 100644
--- a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
@@ -47,7 +47,7 @@ class PdoAdapter extends AbstractAdapter implements PruneableInterface
      * @throws InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
      * @throws InvalidArgumentException When namespace contains invalid characters
      */
-    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = array(), MarshallerInterface $marshaller = null)
+    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = [], MarshallerInterface $marshaller = null)
     {
         $this->init($connOrDsn, $namespace, $defaultLifetime, $options, $marshaller);
     }
diff --git a/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php b/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
index 1f0c00ffe8b6..f7536b1ee250 100644
--- a/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
@@ -78,7 +78,7 @@ function (CacheItemInterface $innerItem, array $item) {
                 }
                 if ($metadata) {
                     // For compactness, expiry and creation duration are packed in the key of an array, using magic numbers as separators
-                    $item["\0*\0value"] = array("\x9D".pack('VN', (int) $metadata[CacheItem::METADATA_EXPIRY] - CacheItem::METADATA_EXPIRY_OFFSET, $metadata[CacheItem::METADATA_CTIME])."\x5F" => $item["\0*\0value"]);
+                    $item["\0*\0value"] = ["\x9D".pack('VN', (int) $metadata[CacheItem::METADATA_EXPIRY] - CacheItem::METADATA_EXPIRY_OFFSET, $metadata[CacheItem::METADATA_CTIME])."\x5F" => $item["\0*\0value"]];
                 }
                 $innerItem->set($item["\0*\0value"]);
                 $innerItem->expiresAt(null !== $item["\0*\0expiry"] ? \DateTime::createFromFormat('U.u', sprintf('%.6f', $item["\0*\0expiry"])) : null);
diff --git a/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php b/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
index 41b9257b5230..e54044b60a37 100644
--- a/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
@@ -84,7 +84,7 @@ function (CacheItem $item, $key, array &$itemTags) {
             function ($deferred) {
                 $tagsByKey = [];
                 foreach ($deferred as $key => $item) {
-                    $tagsByKey[$key] = $item->newMetadata[CacheItem::METADATA_TAGS] ?? array();
+                    $tagsByKey[$key] = $item->newMetadata[CacheItem::METADATA_TAGS] ?? [];
                 }
 
                 return $tagsByKey;
diff --git a/src/Symfony/Component/Cache/CacheItem.php b/src/Symfony/Component/Cache/CacheItem.php
index e0500756a406..92eb9c39dfa3 100644
--- a/src/Symfony/Component/Cache/CacheItem.php
+++ b/src/Symfony/Component/Cache/CacheItem.php
@@ -28,8 +28,8 @@ final class CacheItem implements ItemInterface
     protected $isHit = false;
     protected $expiry;
     protected $defaultLifetime;
-    protected $metadata = array();
-    protected $newMetadata = array();
+    protected $metadata = [];
+    protected $newMetadata = [];
     protected $innerItem;
     protected $poolHash;
     protected $isTaggable = false;
@@ -111,7 +111,7 @@ public function tag($tags): ItemInterface
             throw new LogicException(sprintf('Cache item "%s" comes from a non tag-aware pool: you cannot tag it.', $this->key));
         }
         if (!\is_iterable($tags)) {
-            $tags = array($tags);
+            $tags = [$tags];
         }
         foreach ($tags as $tag) {
             if (!\is_string($tag)) {
@@ -151,7 +151,7 @@ public function getPreviousTags()
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the "getMetadata()" method instead.', __METHOD__), E_USER_DEPRECATED);
 
-        return $this->metadata[self::METADATA_TAGS] ?? array();
+        return $this->metadata[self::METADATA_TAGS] ?? [];
     }
 
     /**
@@ -183,12 +183,12 @@ public static function validateKey($key)
      *
      * @internal
      */
-    public static function log(LoggerInterface $logger = null, $message, $context = array())
+    public static function log(LoggerInterface $logger = null, $message, $context = [])
     {
         if ($logger) {
             $logger->warning($message, $context);
         } else {
-            $replace = array();
+            $replace = [];
             foreach ($context as $k => $v) {
                 if (is_scalar($v)) {
                     $replace['{'.$k.'}'] = $v;
diff --git a/src/Symfony/Component/Cache/DependencyInjection/CacheCollectorPass.php b/src/Symfony/Component/Cache/DependencyInjection/CacheCollectorPass.php
index f93f97b88ec7..6193d3479875 100644
--- a/src/Symfony/Component/Cache/DependencyInjection/CacheCollectorPass.php
+++ b/src/Symfony/Component/Cache/DependencyInjection/CacheCollectorPass.php
@@ -56,16 +56,16 @@ public function process(ContainerBuilder $container)
             $recorder = new Definition(is_subclass_of($definition->getClass(), TagAwareAdapterInterface::class) ? TraceableTagAwareAdapter::class : TraceableAdapter::class);
             $recorder->setTags($definition->getTags());
             $recorder->setPublic($definition->isPublic());
-            $recorder->setArguments(array(new Reference($innerId = $id.$this->cachePoolRecorderInnerSuffix)));
+            $recorder->setArguments([new Reference($innerId = $id.$this->cachePoolRecorderInnerSuffix)]);
 
-            $definition->setTags(array());
+            $definition->setTags([]);
             $definition->setPublic(false);
 
             $container->setDefinition($innerId, $definition);
             $container->setDefinition($id, $recorder);
 
             // Tell the collector to add the new instance
-            $collectorDefinition->addMethodCall('addInstance', array($id, new Reference($id)));
+            $collectorDefinition->addMethodCall('addInstance', [$id, new Reference($id)]);
             $collectorDefinition->setPublic(false);
         }
     }
diff --git a/src/Symfony/Component/Cache/DependencyInjection/CachePoolClearerPass.php b/src/Symfony/Component/Cache/DependencyInjection/CachePoolClearerPass.php
index be315b636daa..3ca89a36a52d 100644
--- a/src/Symfony/Component/Cache/DependencyInjection/CachePoolClearerPass.php
+++ b/src/Symfony/Component/Cache/DependencyInjection/CachePoolClearerPass.php
@@ -36,7 +36,7 @@ public function process(ContainerBuilder $container)
 
         foreach ($container->findTaggedServiceIds($this->cachePoolClearerTag) as $id => $attr) {
             $clearer = $container->getDefinition($id);
-            $pools = array();
+            $pools = [];
             foreach ($clearer->getArgument(0) as $name => $ref) {
                 if ($container->hasDefinition($ref)) {
                     $pools[$name] = new Reference($ref);
diff --git a/src/Symfony/Component/Cache/DependencyInjection/CachePoolPass.php b/src/Symfony/Component/Cache/DependencyInjection/CachePoolPass.php
index 92e2017e6fe1..b1af39755e0d 100644
--- a/src/Symfony/Component/Cache/DependencyInjection/CachePoolPass.php
+++ b/src/Symfony/Component/Cache/DependencyInjection/CachePoolPass.php
@@ -54,15 +54,15 @@ public function process(ContainerBuilder $container)
         }
         $seed .= '.'.$container->getParameter('kernel.container_class');
 
-        $pools = array();
-        $clearers = array();
-        $attributes = array(
+        $pools = [];
+        $clearers = [];
+        $attributes = [
             'provider',
             'name',
             'namespace',
             'default_lifetime',
             'reset',
-        );
+        ];
         foreach ($container->findTaggedServiceIds($this->cachePoolTag) as $id => $tags) {
             $adapter = $pool = $container->getDefinition($id);
             if ($pool->isAbstract()) {
@@ -97,7 +97,7 @@ public function process(ContainerBuilder $container)
                     // no-op
                 } elseif ('reset' === $attr) {
                     if ($tags[0][$attr]) {
-                        $pool->addTag($this->kernelResetTag, array('method' => $tags[0][$attr]));
+                        $pool->addTag($this->kernelResetTag, ['method' => $tags[0][$attr]]);
                     }
                 } elseif ('namespace' !== $attr || ArrayAdapter::class !== $adapter->getClass()) {
                     $pool->replaceArgument($i++, $tags[0][$attr]);
@@ -156,8 +156,8 @@ public static function getServiceProvider(ContainerBuilder $container, $name)
             if (!$container->hasDefinition($name = '.cache_connection.'.ContainerBuilder::hash($dsn))) {
                 $definition = new Definition(AbstractAdapter::class);
                 $definition->setPublic(false);
-                $definition->setFactory(array(AbstractAdapter::class, 'createConnection'));
-                $definition->setArguments(array($dsn, array('lazy' => true)));
+                $definition->setFactory([AbstractAdapter::class, 'createConnection']);
+                $definition->setArguments([$dsn, ['lazy' => true]]);
                 $container->setDefinition($name, $definition);
             }
         }
diff --git a/src/Symfony/Component/Cache/DependencyInjection/CachePoolPrunerPass.php b/src/Symfony/Component/Cache/DependencyInjection/CachePoolPrunerPass.php
index 21266a871eff..e5699623e560 100644
--- a/src/Symfony/Component/Cache/DependencyInjection/CachePoolPrunerPass.php
+++ b/src/Symfony/Component/Cache/DependencyInjection/CachePoolPrunerPass.php
@@ -41,7 +41,7 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $services = array();
+        $services = [];
 
         foreach ($container->findTaggedServiceIds($this->cachePoolTag) as $id => $tags) {
             $class = $container->getParameterBag()->resolveValue($container->getDefinition($id)->getClass());
diff --git a/src/Symfony/Component/Cache/LockRegistry.php b/src/Symfony/Component/Cache/LockRegistry.php
index 0aadf33d61cf..e0318e900c4d 100644
--- a/src/Symfony/Component/Cache/LockRegistry.php
+++ b/src/Symfony/Component/Cache/LockRegistry.php
@@ -25,13 +25,13 @@
  */
 class LockRegistry
 {
-    private static $openedFiles = array();
-    private static $lockedFiles = array();
+    private static $openedFiles = [];
+    private static $lockedFiles = [];
 
     /**
      * The number of items in this list controls the max number of concurrent processes.
      */
-    private static $files = array(
+    private static $files = [
         __DIR__.\DIRECTORY_SEPARATOR.'Adapter'.\DIRECTORY_SEPARATOR.'AbstractAdapter.php',
         __DIR__.\DIRECTORY_SEPARATOR.'Adapter'.\DIRECTORY_SEPARATOR.'AdapterInterface.php',
         __DIR__.\DIRECTORY_SEPARATOR.'Adapter'.\DIRECTORY_SEPARATOR.'ApcuAdapter.php',
@@ -51,7 +51,7 @@ class LockRegistry
         __DIR__.\DIRECTORY_SEPARATOR.'Adapter'.\DIRECTORY_SEPARATOR.'TagAwareAdapterInterface.php',
         __DIR__.\DIRECTORY_SEPARATOR.'Adapter'.\DIRECTORY_SEPARATOR.'TraceableAdapter.php',
         __DIR__.\DIRECTORY_SEPARATOR.'Adapter'.\DIRECTORY_SEPARATOR.'TraceableTagAwareAdapter.php',
-    );
+    ];
 
     /**
      * Defines a set of existing files that will be used as keys to acquire locks.
@@ -69,7 +69,7 @@ public static function setFiles(array $files): array
                 fclose($file);
             }
         }
-        self::$openedFiles = self::$lockedFiles = array();
+        self::$openedFiles = self::$lockedFiles = [];
 
         return $previousFiles;
     }
diff --git a/src/Symfony/Component/Cache/Marshaller/DefaultMarshaller.php b/src/Symfony/Component/Cache/Marshaller/DefaultMarshaller.php
index 16c02bb08f4e..9c1ef4601542 100644
--- a/src/Symfony/Component/Cache/Marshaller/DefaultMarshaller.php
+++ b/src/Symfony/Component/Cache/Marshaller/DefaultMarshaller.php
@@ -37,7 +37,7 @@ public function __construct(bool $useIgbinarySerialize = null)
      */
     public function marshall(array $values, ?array &$failed): array
     {
-        $serialized = $failed = array();
+        $serialized = $failed = [];
 
         foreach ($values as $id => $value) {
             try {
diff --git a/src/Symfony/Component/Cache/Simple/ArrayCache.php b/src/Symfony/Component/Cache/Simple/ArrayCache.php
index 6785943787c9..e36dacb82947 100644
--- a/src/Symfony/Component/Cache/Simple/ArrayCache.php
+++ b/src/Symfony/Component/Cache/Simple/ArrayCache.php
@@ -104,7 +104,7 @@ public function set($key, $value, $ttl = null)
             CacheItem::validateKey($key);
         }
 
-        return $this->setMultiple(array($key => $value), $ttl);
+        return $this->setMultiple([$key => $value], $ttl);
     }
 
     /**
@@ -115,7 +115,7 @@ public function setMultiple($values, $ttl = null)
         if (!\is_array($values) && !$values instanceof \Traversable) {
             throw new InvalidArgumentException(sprintf('Cache values must be array or Traversable, "%s" given', \is_object($values) ? \get_class($values) : \gettype($values)));
         }
-        $valuesArray = array();
+        $valuesArray = [];
 
         foreach ($values as $key => $value) {
             if (!\is_int($key) && !(\is_string($key) && isset($this->expiries[$key]))) {
diff --git a/src/Symfony/Component/Cache/Simple/PdoCache.php b/src/Symfony/Component/Cache/Simple/PdoCache.php
index 076370c97e67..985753fe7b41 100644
--- a/src/Symfony/Component/Cache/Simple/PdoCache.php
+++ b/src/Symfony/Component/Cache/Simple/PdoCache.php
@@ -45,7 +45,7 @@ class PdoCache extends AbstractCache implements PruneableInterface
      * @throws InvalidArgumentException When PDO error mode is not PDO::ERRMODE_EXCEPTION
      * @throws InvalidArgumentException When namespace contains invalid characters
      */
-    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = array(), MarshallerInterface $marshaller = null)
+    public function __construct($connOrDsn, string $namespace = '', int $defaultLifetime = 0, array $options = [], MarshallerInterface $marshaller = null)
     {
         $this->init($connOrDsn, $namespace, $defaultLifetime, $options, $marshaller);
     }
diff --git a/src/Symfony/Component/Cache/Simple/Psr6Cache.php b/src/Symfony/Component/Cache/Simple/Psr6Cache.php
index 4b373a03d0c9..29c039f2c169 100644
--- a/src/Symfony/Component/Cache/Simple/Psr6Cache.php
+++ b/src/Symfony/Component/Cache/Simple/Psr6Cache.php
@@ -170,7 +170,7 @@ public function getMultiple($keys, $default = null)
             unset($metadata[CacheItem::METADATA_TAGS]);
 
             if ($metadata) {
-                $values[$key] = array("\x9D".pack('VN', (int) $metadata[CacheItem::METADATA_EXPIRY] - self::METADATA_EXPIRY_OFFSET, $metadata[CacheItem::METADATA_CTIME])."\x5F" => $values[$key]);
+                $values[$key] = ["\x9D".pack('VN', (int) $metadata[CacheItem::METADATA_EXPIRY] - self::METADATA_EXPIRY_OFFSET, $metadata[CacheItem::METADATA_CTIME])."\x5F" => $values[$key]];
             }
         }
 
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php b/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
index 1e5d9382c7ef..8a7d147808bf 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
@@ -77,10 +77,10 @@ public function testGetMetadata()
 
         $item = $cache->getItem('foo');
 
-        $expected = array(
+        $expected = [
             CacheItem::METADATA_EXPIRY => 9.5 + time(),
             CacheItem::METADATA_CTIME => 1000,
-        );
+        ];
         $this->assertEquals($expected, $item->getMetadata(), 'Item metadata should embed expiry and ctime.', .6);
     }
 
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php
index 7b65061cd12b..5c72dc6e0bc3 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/ArrayAdapterTest.php
@@ -18,11 +18,11 @@
  */
 class ArrayAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testGetMetadata' => 'ArrayAdapter does not keep metadata.',
         'testDeferredSaveWithoutCommit' => 'Assumes a shared cache which ArrayAdapter is not.',
         'testSaveWithoutExpire' => 'Assumes a shared cache which ArrayAdapter is not.',
-    );
+    ];
 
     public function createCachePool($defaultLifetime = 0)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
index 09ba6e444ca9..61b039b57b48 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
@@ -27,10 +27,10 @@ class ChainAdapterTest extends AdapterTestCase
     public function createCachePool($defaultLifetime = 0, $testMethod = null)
     {
         if ('testGetMetadata' === $testMethod) {
-            return new ChainAdapter(array(new FilesystemAdapter('', $defaultLifetime)), $defaultLifetime);
+            return new ChainAdapter([new FilesystemAdapter('', $defaultLifetime)], $defaultLifetime);
         }
 
-        return new ChainAdapter(array(new ArrayAdapter($defaultLifetime), new ExternalAdapter(), new FilesystemAdapter('', $defaultLifetime)), $defaultLifetime);
+        return new ChainAdapter([new ArrayAdapter($defaultLifetime), new ExternalAdapter(), new FilesystemAdapter('', $defaultLifetime)], $defaultLifetime);
     }
 
     /**
@@ -39,7 +39,7 @@ public function createCachePool($defaultLifetime = 0, $testMethod = null)
      */
     public function testEmptyAdaptersException()
     {
-        new ChainAdapter(array());
+        new ChainAdapter([]);
     }
 
     /**
@@ -48,7 +48,7 @@ public function testEmptyAdaptersException()
      */
     public function testInvalidAdapterException()
     {
-        new ChainAdapter(array(new \stdClass()));
+        new ChainAdapter([new \stdClass()]);
     }
 
     public function testPrune()
@@ -57,18 +57,18 @@ public function testPrune()
             $this->markTestSkipped($this->skippedTests[__FUNCTION__]);
         }
 
-        $cache = new ChainAdapter(array(
+        $cache = new ChainAdapter([
             $this->getPruneableMock(),
             $this->getNonPruneableMock(),
             $this->getPruneableMock(),
-        ));
+        ]);
         $this->assertTrue($cache->prune());
 
-        $cache = new ChainAdapter(array(
+        $cache = new ChainAdapter([
             $this->getPruneableMock(),
             $this->getFailingPruneableMock(),
             $this->getPruneableMock(),
-        ));
+        ]);
         $this->assertFalse($cache->prune());
     }
 
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/MaxIdLengthAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/MaxIdLengthAdapterTest.php
index 7613afa7f960..fec985e6da99 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/MaxIdLengthAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/MaxIdLengthAdapterTest.php
@@ -19,15 +19,15 @@ class MaxIdLengthAdapterTest extends TestCase
     public function testLongKey()
     {
         $cache = $this->getMockBuilder(MaxIdLengthAdapter::class)
-            ->setConstructorArgs(array(str_repeat('-', 10)))
-            ->setMethods(array('doHave', 'doFetch', 'doDelete', 'doSave', 'doClear'))
+            ->setConstructorArgs([str_repeat('-', 10)])
+            ->setMethods(['doHave', 'doFetch', 'doDelete', 'doSave', 'doClear'])
             ->getMock();
 
         $cache->expects($this->exactly(2))
             ->method('doHave')
             ->withConsecutive(
-                array($this->equalTo('----------:nWfzGiCgLczv3SSUzXL3kg:')),
-                array($this->equalTo('----------:---------------------------------------'))
+                [$this->equalTo('----------:nWfzGiCgLczv3SSUzXL3kg:')],
+                [$this->equalTo('----------:---------------------------------------')]
             );
 
         $cache->hasItem(str_repeat('-', 40));
@@ -37,7 +37,7 @@ public function testLongKey()
     public function testLongKeyVersioning()
     {
         $cache = $this->getMockBuilder(MaxIdLengthAdapter::class)
-            ->setConstructorArgs(array(str_repeat('-', 26)))
+            ->setConstructorArgs([str_repeat('-', 26)])
             ->getMock();
 
         $reflectionClass = new \ReflectionClass(AbstractAdapter::class);
@@ -46,20 +46,20 @@ public function testLongKeyVersioning()
         $reflectionMethod->setAccessible(true);
 
         // No versioning enabled
-        $this->assertEquals('--------------------------:------------', $reflectionMethod->invokeArgs($cache, array(str_repeat('-', 12))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 12)))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 23)))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 40)))));
+        $this->assertEquals('--------------------------:------------', $reflectionMethod->invokeArgs($cache, [str_repeat('-', 12)]));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 12)])));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 23)])));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 40)])));
 
         $reflectionProperty = $reflectionClass->getProperty('versioningIsEnabled');
         $reflectionProperty->setAccessible(true);
         $reflectionProperty->setValue($cache, true);
 
         // Versioning enabled
-        $this->assertEquals('--------------------------:1/------------', $reflectionMethod->invokeArgs($cache, array(str_repeat('-', 12))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 12)))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 23)))));
-        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, array(str_repeat('-', 40)))));
+        $this->assertEquals('--------------------------:1/------------', $reflectionMethod->invokeArgs($cache, [str_repeat('-', 12)]));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 12)])));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 23)])));
+        $this->assertLessThanOrEqual(50, \strlen($reflectionMethod->invokeArgs($cache, [str_repeat('-', 40)])));
     }
 
     /**
@@ -69,7 +69,7 @@ public function testLongKeyVersioning()
     public function testTooLongNamespace()
     {
         $cache = $this->getMockBuilder(MaxIdLengthAdapter::class)
-            ->setConstructorArgs(array(str_repeat('-', 40)))
+            ->setConstructorArgs([str_repeat('-', 40)])
             ->getMock();
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/MemcachedAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/MemcachedAdapterTest.php
index 161a5739f3ea..59f33f3aee1b 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/MemcachedAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/MemcachedAdapterTest.php
@@ -203,40 +203,40 @@ public function testMultiServerDsn()
         $dsn = 'memcached:?host[localhost]&host[localhost:12345]&host[/some/memcached.sock:]=3';
         $client = MemcachedAdapter::createConnection($dsn);
 
-        $expected = array(
-            0 => array(
+        $expected = [
+            0 => [
                 'host' => 'localhost',
                 'port' => 11211,
                 'type' => 'TCP',
-            ),
-            1 => array(
+            ],
+            1 => [
                 'host' => 'localhost',
                 'port' => 12345,
                 'type' => 'TCP',
-            ),
-            2 => array(
+            ],
+            2 => [
                 'host' => '/some/memcached.sock',
                 'port' => 0,
                 'type' => 'SOCKET',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expected, $client->getServerList());
 
         $dsn = 'memcached://localhost?host[foo.bar]=3';
         $client = MemcachedAdapter::createConnection($dsn);
 
-        $expected = array(
-            0 => array(
+        $expected = [
+            0 => [
                 'host' => 'localhost',
                 'port' => 11211,
                 'type' => 'TCP',
-            ),
-            1 => array(
+            ],
+            1 => [
                 'host' => 'foo.bar',
                 'port' => 11211,
                 'type' => 'TCP',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expected, $client->getServerList());
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PdoDbalAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PdoDbalAdapterTest.php
index eea89b745825..1c9fd5140cb5 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PdoDbalAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PdoDbalAdapterTest.php
@@ -32,7 +32,7 @@ public static function setupBeforeClass()
 
         self::$dbFile = tempnam(sys_get_temp_dir(), 'sf_sqlite_cache');
 
-        $pool = new PdoAdapter(DriverManager::getConnection(array('driver' => 'pdo_sqlite', 'path' => self::$dbFile)));
+        $pool = new PdoAdapter(DriverManager::getConnection(['driver' => 'pdo_sqlite', 'path' => self::$dbFile]));
     }
 
     public static function tearDownAfterClass()
@@ -42,6 +42,6 @@ public static function tearDownAfterClass()
 
     public function createCachePool($defaultLifetime = 0)
     {
-        return new PdoAdapter(DriverManager::getConnection(array('driver' => 'pdo_sqlite', 'path' => self::$dbFile)), '', $defaultLifetime);
+        return new PdoAdapter(DriverManager::getConnection(['driver' => 'pdo_sqlite', 'path' => self::$dbFile]), '', $defaultLifetime);
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
index 1a6898de58f2..cee80ac196ec 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
@@ -21,7 +21,7 @@
  */
 class PhpArrayAdapterTest extends AdapterTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testGet' => 'PhpArrayAdapter is read-only.',
         'testBasicUsage' => 'PhpArrayAdapter is read-only.',
         'testBasicUsageWithLongKey' => 'PhpArrayAdapter is read-only.',
@@ -53,7 +53,7 @@ class PhpArrayAdapterTest extends AdapterTestCase
 
         'testDefaultLifeTime' => 'PhpArrayAdapter does not allow configuring a default lifetime.',
         'testPrune' => 'PhpArrayAdapter just proxies',
-    );
+    ];
 
     protected static $file;
 
@@ -80,22 +80,22 @@ public function createCachePool($defaultLifetime = 0, $testMethod = null)
 
     public function testStore()
     {
-        $arrayWithRefs = array();
+        $arrayWithRefs = [];
         $arrayWithRefs[0] = 123;
         $arrayWithRefs[1] = &$arrayWithRefs[0];
 
-        $object = (object) array(
+        $object = (object) [
             'foo' => 'bar',
             'foo2' => 'bar2',
-        );
+        ];
 
-        $expected = array(
+        $expected = [
             'null' => null,
             'serializedString' => serialize($object),
             'arrayWithRefs' => $arrayWithRefs,
             'object' => $object,
-            'arrayWithObject' => array('bar' => $object),
-        );
+            'arrayWithObject' => ['bar' => $object],
+        ];
 
         $adapter = $this->createCachePool();
     
10000
    $adapter->warmUp($expected);
@@ -107,29 +107,29 @@ public function testStore()
 
     public function testStoredFile()
     {
-        $data = array(
+        $data = [
             'integer' => 42,
             'float' => 42.42,
             'boolean' => true,
-            'array_simple' => array('foo', 'bar'),
-            'array_associative' => array('foo' => 'bar', 'foo2' => 'bar2'),
-        );
-        $expected = array(
-            array(
+            'array_simple' => ['foo', 'bar'],
+            'array_associative' => ['foo' => 'bar', 'foo2' => 'bar2'],
+        ];
+        $expected = [
+            [
                 'integer' => 0,
                 'float' => 1,
                 'boolean' => 2,
                 'array_simple' => 3,
                 'array_associative' => 4,
-            ),
-            array(
+            ],
+            [
                 0 => 42,
                 1 => 42.42,
                 2 => true,
-                3 => array('foo', 'bar'),
-                4 => array('foo' => 'bar', 'foo2' => 'bar2'),
-            ),
-        );
+                3 => ['foo', 'bar'],
+                4 => ['foo' => 'bar', 'foo2' => 'bar2'],
+            ],
+        ];
 
         $adapter = $this->createCachePool();
         $adapter->warmUp($data);
@@ -142,7 +142,7 @@ public function testStoredFile()
 
 class PhpArrayAdapterWrapper extends PhpArrayAdapter
 {
-    protected $data = array();
+    protected $data = [];
 
     public function save(CacheItemInterface $item)
     {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PredisAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PredisAdapterTest.php
index c65515b54d7b..abe0a2109408 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PredisAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PredisAdapterTest.php
@@ -19,20 +19,20 @@ class PredisAdapterTest extends AbstractRedisAdapterTest
     public static function setupBeforeClass()
     {
         parent::setupBeforeClass();
-        self::$redis = new \Predis\Client(array('host' => getenv('REDIS_HOST')));
+        self::$redis = new \Predis\Client(['host' => getenv('REDIS_HOST')]);
     }
 
     public function testCreateConnection()
     {
         $redisHost = getenv('REDIS_HOST');
 
-        $redis = RedisAdapter::createConnection('redis://'.$redisHost.'/1', array('class' => \Predis\Client::class, 'timeout' => 3));
+        $redis = RedisAdapter::createConnection('redis://'.$redisHost.'/1', ['class' => \Predis\Client::class, 'timeout' => 3]);
         $this->assertInstanceOf(\Predis\Client::class, $redis);
 
         $connection = $redis->getConnection();
         $this->assertInstanceOf(StreamConnection::class, $connection);
 
-        $params = array(
+        $params = [
             'scheme' => 'tcp',
             'host' => 'localhost',
             'port' => 6379,
@@ -41,7 +41,7 @@ public function testCreateConnection()
             'read_write_timeout' => 0,
             'tcp_nodelay' => true,
             'database' => '1',
-        );
+        ];
         $this->assertSame($params, $connection->getParameters()->toArray());
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PredisRedisClusterAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PredisRedisClusterAdapterTest.php
index 9974e93635eb..c819c348d999 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PredisRedisClusterAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PredisRedisClusterAdapterTest.php
@@ -21,7 +21,7 @@ public static function setupBeforeClass()
             self::markTestSkipped('REDIS_CLUSTER_HOSTS env var is not defined.');
         }
 
-        self::$redis = RedisAdapter::createConnection('redis:?host['.str_replace(' ', ']&host[', $hosts).']', array('class' => \Predis\Client::class, 'redis_cluster' => true));
+        self::$redis = RedisAdapter::createConnection('redis:?host['.str_replace(' ', ']&host[', $hosts).']', ['class' => \Predis\Client::class, 'redis_cluster' => true]);
     }
 
     public static function tearDownAfterClass()
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/RedisAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/RedisAdapterTest.php
index 340304cb50f9..c83abaf91bce 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/RedisAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/RedisAdapterTest.php
@@ -35,7 +35,7 @@ public function testCreateConnection()
     {
         $redis = RedisAdapter::createConnection('redis:?host[h1]&host[h2]&host[/foo:]');
         $this->assertInstanceOf(\RedisArray::class, $redis);
-        $this->assertSame(array('h1:6379', 'h2:6379', '/foo'), $redis->_hosts());
+        $this->assertSame(['h1:6379', 'h2:6379', '/foo'], $redis->_hosts());
         @$redis = null; // some versions of phpredis connect on destruct, let's silence the warning
 
         $redisHost = getenv('REDIS_HOST');
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/RedisClusterAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/RedisClusterAdapterTest.php
index 344f1d0743ed..75dd2790ccba 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/RedisClusterAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/RedisClusterAdapterTest.php
@@ -26,7 +26,7 @@ public static function setupBeforeClass()
             self::markTestSkipped('REDIS_CLUSTER_HOSTS env var is not defined.');
         }
 
-        self::$redis = AbstractAdapter::createConnection('redis:?host['.str_replace(' ', ']&host[', $hosts).']', array('lazy' => true, 'redis_cluster' => true));
+        self::$redis = AbstractAdapter::createConnection('redis:?host['.str_replace(' ', ']&host[', $hosts).']', ['lazy' => true, 'redis_cluster' => true]);
     }
 
     public function createCachePool($defaultLifetime = 0)
@@ -49,10 +49,10 @@ public function testFailedCreateConnection($dsn)
 
     public function provideFailedCreateConnection()
     {
-        return array(
-            array('redis://localhost:1234?redis_cluster=1'),
-            array('redis://foo@localhost?redis_cluster=1'),
-            array('redis://localhost/123?redis_cluster=1'),
-        );
+        return [
+            ['redis://localhost:1234?redis_cluster=1'],
+            ['redis://foo@localhost?redis_cluster=1'],
+            ['redis://localhost/123?redis_cluster=1'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
index b56cf6e04b31..7b8895b70019 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
@@ -161,7 +161,7 @@ public function testGetMetadata()
         $pool->save($i->tag('foo'));
 
         $i = $pool->getItem('k');
-        $this->assertSame(array('foo' => 'foo'), $i->getMetadata()[CacheItem::METADATA_TAGS]);
+        $this->assertSame(['foo' => 'foo'], $i->getMetadata()[CacheItem::METADATA_TAGS]);
     }
 
     public function testPrune()
diff --git a/src/Symfony/Component/Cache/Tests/CacheItemTest.php b/src/Symfony/Component/Cache/Tests/CacheItemTest.php
index 395c003bd3a5..0e3f4b9a7351 100644
--- a/src/Symfony/Component/Cache/Tests/CacheItemTest.php
+++ b/src/Symfony/Component/Cache/Tests/CacheItemTest.php
@@ -33,23 +33,23 @@ public function testInvalidKey($key)
 
     public function provideInvalidKey()
     {
-        return array(
-            array(''),
-            array('{'),
-            array('}'),
-            array('('),
-            array(')'),
-            array('/'),
-            array('\\'),
-            array('@'),
-            array(':'),
-            array(true),
-            array(null),
-            array(1),
-            array(1.1),
-            array(array(array())),
-            array(new \Exception('foo')),
-        );
+        return [
+            [''],
+            ['{'],
+            ['}'],
+            ['('],
+            [')'],
+            ['/'],
+            ['\\'],
+            ['@'],
+            [':'],
+            [true],
+            [null],
+            [1],
+            [1.1],
+            [[[]]],
+            [new \Exception('foo')],
+        ];
     }
 
     public function testTag()
@@ -60,10 +60,10 @@ public function testTag()
         $r->setValue($item, true);
 
         $this->assertSame($item, $item->tag('foo'));
-        $this->assertSame($item, $item->tag(array('bar', 'baz')));
+        $this->assertSame($item, $item->tag(['bar', 'baz']));
 
         (\Closure::bind(function () use ($item) {
-            $this->assertSame(array('foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'), $item->newMetadata[CacheItem::METADATA_TAGS]);
+            $this->assertSame(['foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'], $item->newMetadata[CacheItem::METADATA_TAGS]);
         }, $this, CacheItem::class))();
     }
 
@@ -93,6 +93,6 @@ public function testNonTaggableItem()
         $r->setAccessible(true);
         $r->setValue($item, 'foo');
 
-        $item->tag(array());
+        $item->tag([]);
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/DependencyInjection/CacheCollectorPassTest.php b/src/Symfony/Component/Cache/Tests/DependencyInjection/CacheCollectorPassTest.php
index 421f5764de4f..7e77491de867 100644
--- a/src/Symfony/Component/Cache/Tests/DependencyInjection/CacheCollectorPassTest.php
+++ b/src/Symfony/Component/Cache/Tests/DependencyInjection/CacheCollectorPassTest.php
@@ -37,10 +37,10 @@ public function testProcess()
         $collector = $container->register('data_collector.cache', CacheDataCollector::class);
         (new CacheCollectorPass())->process($container);
 
-        $this->assertEquals(array(
-            array('addInstance', array('fs', new Reference('fs'))),
-            array('addInstance', array('tagged_fs', new Reference('tagged_fs'))),
-        ), $collector->getMethodCalls());
+        $this->assertEquals([
+            ['addInstance', ['fs', new Reference('fs')]],
+            ['addInstance', ['tagged_fs', new Reference('tagged_fs')]],
+        ], $collector->getMethodCalls());
 
         $this->assertSame(TraceableAdapter::class, $container->findDefinition('fs')->getClass());
         $this->assertSame(TraceableTagAwareAdapter::class, $container->getDefinition('tagged_fs')->getClass());
diff --git a/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolClearerPassTest.php b/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolClearerPassTest.php
index 6aa68c29cd83..533aa14afff0 100644
--- a/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolClearerPassTest.php
+++ b/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolClearerPassTest.php
@@ -34,18 +34,18 @@ public function testPoolRefsAreWeak()
 
         $publicPool = new Definition();
         $publicPool->addArgument('namespace');
-        $publicPool->addTag('cache.pool', array('clearer' => 'clearer_alias'));
+        $publicPool->addTag('cache.pool', ['clearer' => 'clearer_alias']);
         $container->setDefinition('public.pool', $publicPool);
 
         $publicPool = new Definition();
         $publicPool->addArgument('namespace');
-        $publicPool->addTag('cache.pool', array('clearer' => 'clearer_alias', 'name' => 'pool2'));
+        $publicPool->addTag('cache.pool', ['clearer' => 'clearer_alias', 'name' => 'pool2']);
         $container->setDefinition('public.pool2', $publicPool);
 
         $privatePool = new Definition();
         $privatePool->setPublic(false);
         $privatePool->addArgument('namespace');
-        $privatePool->addTag('cache.pool', array('clearer' => 'clearer_alias'));
+        $privatePool->addTag('cache.pool', ['clearer' => 'clearer_alias']);
         $container->setDefinition('private.pool', $privatePool);
 
         $clearer = new Definition();
@@ -55,18 +55,18 @@ public function testPoolRefsAreWeak()
         $pass = new RemoveUnusedDefinitionsPass();
         foreach ($container->getCompiler()->getPassConfig()->getRemovingPasses() as $removingPass) {
             if ($removingPass instanceof RepeatedPass) {
-                $pass->setRepeatedPass(new RepeatedPass(array($pass)));
+                $pass->setRepeatedPass(new RepeatedPass([$pass]));
                 break;
             }
         }
-        foreach (array(new CachePoolPass(), $pass, new CachePoolClearerPass()) as $pass) {
+        foreach ([new CachePoolPass(), $pass, new CachePoolClearerPass()] as $pass) {
             $pass->process($container);
         }
 
-        $expected = array(array(
+        $expected = [[
             'public.pool' => new Reference('public.pool'),
             'pool2' => new Reference('public.pool2'),
-        ));
+        ]];
         $this->assertEquals($expected, $clearer->getArguments());
         $this->assertEquals($expected, $globalClearer->getArguments());
     }
diff --git a/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolPassTest.php b/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolPassTest.php
index f757e7982124..f307aa5386b0 100644
--- a/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolPassTest.php
+++ b/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolPassTest.php
@@ -71,10 +71,10 @@ public function testArgsAreReplaced()
         $container->setParameter('kernel.container_class', 'app');
         $container->setParameter('cache.prefix.seed', 'foo');
         $cachePool = new Definition();
-        $cachePool->addTag('cache.pool', array(
+        $cachePool->addTag('cache.pool', [
             'provider' => 'foobar',
             'default_lifetime' => 3,
-        ));
+        ]);
         $cachePool->addArgument(null);
         $cachePool->addArgument(null);
         $cachePool->addArgument(null);
@@ -94,10 +94,10 @@ public function testWithNameAttribute()
         $container->setParameter('kernel.container_class', 'app');
         $container->setParameter('cache.prefix.seed', 'foo');
         $cachePool = new Definition();
-        $cachePool->addTag('cache.pool', array(
+        $cachePool->addTag('cache.pool', [
             'name' => 'foobar',
             'provider' => 'foobar',
-        ));
+        ]);
         $cachePool->addArgument(null);
         $cachePool->addArgument(null);
         $cachePool->addArgument(null);
@@ -122,7 +122,7 @@ public function testThrowsExceptionWhenCachePoolTagHasUnknownAttributes()
         $adapter->addTag('cache.pool');
         $container->setDefinition('app.cache_adapter', $adapter);
         $cachePool = new ChildDefinition('app.cache_adapter');
-        $cachePool->addTag('cache.pool', array('foobar' => 123));
+        $cachePool->addTag('cache.pool', ['foobar' => 123]);
         $container->setDefinition('app.cache_pool', $cachePool);
 
         $this->cachePoolPass->process($container);
diff --git a/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolPrunerPassTest.php b/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolPrunerPassTest.php
index e4de6f6807e5..128ee243c66c 100644
--- a/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolPrunerPassTest.php
+++ b/src/Symfony/Component/Cache/Tests/DependencyInjection/CachePoolPrunerPassTest.php
@@ -24,17 +24,17 @@ class CachePoolPrunerPassTest extends TestCase
     public function testCompilerPassReplacesCommandArgument()
     {
         $container = new ContainerBuilder();
-        $container->register('console.command.cache_pool_prune')->addArgument(array());
+        $container->register('console.command.cache_pool_prune')->addArgument([]);
         $container->register('pool.foo', FilesystemAdapter::class)->addTag('cache.pool');
         $container->register('pool.bar', PhpFilesAdapter::class)->addTag('cache.pool');
 
         $pass = new CachePoolPrunerPass();
         $pass->process($container);
 
-        $expected = array(
+        $expected = [
             'pool.foo' => new Reference('pool.foo'),
             'pool.bar' => new Reference('pool.bar'),
-        );
+        ];
         $argument = $container->getDefinition('console.command.cache_pool_prune')->getArgument(0);
 
         $this->assertInstanceOf(IteratorArgument::class, $argument);
@@ -63,7 +63,7 @@ public function testCompilePassIsIgnoredIfCommandDoesNotExist()
     public function testCompilerPassThrowsOnInvalidDefinitionClass()
     {
         $container = new ContainerBuilder();
-        $container->register('console.command.cache_pool_prune')->addArgument(array());
+        $container->register('console.command.cache_pool_prune')->addArgument([]);
         $container->register('pool.not-found', NotFound::class)->addTag('cache.pool');
 
         $pass = new CachePoolPrunerPass();
diff --git a/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php b/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php
index 27fb82de0186..95b39d54bd8b 100644
--- a/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php
+++ b/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php
@@ -6,7 +6,7 @@
 
 class ArrayCache extends CacheProvider
 {
-    private $data = array();
+    private $data = [];
 
     protected function doFetch($id)
     {
@@ -26,7 +26,7 @@ protected function doContains($id)
 
     protected function doSave($id, $data, $lifeTime = 0)
     {
-        $this->data[$id] = array($data, $lifeTime ? microtime(true) + $lifeTime : false);
+        $this->data[$id] = [$data, $lifeTime ? microtime(true) + $lifeTime : false];
 
         return true;
     }
@@ -40,7 +40,7 @@ protected function doDelete($id)
 
     protected function doFlush()
     {
-        $this->data = array();
+        $this->data = [];
 
         return true;
     }
diff --git a/src/Symfony/Component/Cache/Tests/LockRegistryTest.php b/src/Symfony/Component/Cache/Tests/LockRegistryTest.php
index 3f7d95957059..0771347ed6fe 100644
--- a/src/Symfony/Component/Cache/Tests/LockRegistryTest.php
+++ b/src/Symfony/Component/Cache/Tests/LockRegistryTest.php
@@ -18,7 +18,7 @@ class LockRegistryTest extends TestCase
 {
     public function testFiles()
     {
-        $lockFiles = LockRegistry::setFiles(array());
+        $lockFiles = LockRegistry::setFiles([]);
         LockRegistry::setFiles($lockFiles);
         $expected = array_map('realpath', glob(__DIR__.'/../Adapter/*'));
         $this->assertSame($expected, $lockFiles);
diff --git a/src/Symfony/Component/Cache/Tests/Marshaller/DefaultMarshallerTest.php b/src/Symfony/Component/Cache/Tests/Marshaller/DefaultMarshallerTest.php
index fc625d12fc2f..daa1fd19f4f9 100644
--- a/src/Symfony/Component/Cache/Tests/Marshaller/DefaultMarshallerTest.php
+++ b/src/Symfony/Component/Cache/Tests/Marshaller/DefaultMarshallerTest.php
@@ -19,14 +19,14 @@ class DefaultMarshallerTest extends TestCase
     public function testSerialize()
     {
         $marshaller = new DefaultMarshaller();
-        $values = array(
+        $values = [
             'a' => 123,
             'b' => function () {},
-        );
+        ];
 
-        $expected = array('a' => \extension_loaded('igbinary') ? igbinary_serialize(123) : serialize(123));
+        $expected = ['a' => \extension_loaded('igbinary') ? igbinary_serialize(123) : serialize(123)];
         $this->assertSame($expected, $marshaller->marshall($values, $failed));
-        $this->assertSame(array('b'), $failed);
+        $this->assertSame(['b'], $failed);
     }
 
     public function testNativeUnserialize()
diff --git a/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php
index 724744cb9a25..ba4bde313951 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php
@@ -20,7 +20,7 @@
  */
 class PhpArrayCacheTest extends CacheTestCase
 {
-    protected $skippedTests = array(
+    protected $skippedTests = [
         'testBasicUsageWithLongKey' => 'PhpArrayCache does no writes',
 
         'testDelete' => 'PhpArrayCache does no writes',
@@ -45,7 +45,7 @@ class PhpArrayCacheTest extends CacheTestCase
 
         'testDefaultLifeTime' => 'PhpArrayCache does not allow configuring a default lifetime.',
         'testPrune' => 'PhpArrayCache just proxies',
-    );
+    ];
 
     protected static $file;
 
@@ -68,22 +68,22 @@ public function createSimpleCache()
 
     public function testStore()
     {
-        $arrayWithRefs = array();
+        $arrayWithRefs = [];
         $arrayWithRefs[0] = 123;
         $arrayWithRefs[1] = &$arrayWithRefs[0];
 
-        $object = (object) array(
+        $object = (object) [
             'foo' => 'bar',
             'foo2' => 'bar2',
-        );
+        ];
 
-        $expected = array(
+        $expected = [
             'null' => null,
             'serializedString' => serialize($object),
             'arrayWithRefs' => $arrayWithRefs,
             'object' => $object,
-            'arrayWithObject' => array('bar' => $object),
-        );
+            'arrayWithObject' => ['bar' => $object],
+        ];
 
         $cache = new PhpArrayCache(self::$file, new NullCache());
         $cache->warmUp($expected);
@@ -95,29 +95,29 @@ public function testStore()
 
     public function testStoredFile()
     {
-        $data = array(
+        $data = [
             'integer' => 42,
             'float' => 42.42,
             'boolean' => true,
-            'array_simple' => array('foo', 'bar'),
-            'array_associative' => array('foo' => 'bar', 'foo2' => 'bar2'),
-        );
-        $expected = array(
-            array(
+            'array_simple' => ['foo', 'bar'],
+            'array_associative' => ['foo' => 'bar', 'foo2' => 'bar2'],
+        ];
+        $expected = [
+            [
                 'integer' => 0,
                 'float' => 1,
                 'boolean' => 2,
                 'array_simple' => 3,
                 'array_associative' => 4,
-            ),
-            array(
+            ],
+            [
                 0 => 42,
                 1 => 42.42,
                 2 => true,
-                3 => array('foo', 'bar'),
-                4 => array('foo' => 'bar', 'foo2' => 'bar2'),
-            ),
-        );
+                3 => ['foo', 'bar'],
+                4 => ['foo' => 'bar', 'foo2' => 'bar2'],
+            ],
+        ];
 
         $cache = new PhpArrayCache(self::$file, new NullCache());
         $cache->warmUp($data);
@@ -130,7 +130,7 @@ public function testStoredFile()
 
 class PhpArrayCacheWrapper extends PhpArrayCache
 {
-    protected $data = array();
+    protected $data = [];
 
     public function set($key, $value, $ttl = null)
     {
diff --git a/src/Symfony/Component/Cache/Traits/AbstractTrait.php b/src/Symfony/Component/Cache/Traits/AbstractTrait.php
index 01351f11c94d..2553ea75cb6a 100644
--- a/src/Symfony/Component/Cache/Traits/AbstractTrait.php
+++ b/src/Symfony/Component/Cache/Traits/AbstractTrait.php
@@ -26,8 +26,8 @@ trait AbstractTrait
     private $namespace;
     private $namespaceVersion = '';
     private $versioningIsEnabled = false;
-    private $deferred = array();
-    private $ids = array();
+    private $deferred = [];
+    private $ids = [];
 
     /**
      * @var int|null The maximum length to enforce for identifiers or null when no limit applies
@@ -94,7 +94,7 @@ public function hasItem($key)
         try {
             return $this->doHave($id);
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to check if key "{key}" is cached', array('key' => $key, 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to check if key "{key}" is cached', ['key' => $key, 'exception' => $e]);
 
             return false;
         }
@@ -105,24 +105,24 @@ public function hasItem($key)
      */
     public function clear()
     {
-        $this->deferred = array();
+        $this->deferred = [];
         if ($cleared = $this->versioningIsEnabled) {
             $namespaceVersion = substr_replace(base64_encode(pack('V', mt_rand())), ':', 5);
             try {
-                $cleared = $this->doSave(array('/'.$this->namespace => $namespaceVersion), 0);
+                $cleared = $this->doSave(['/'.$this->namespace => $namespaceVersion], 0);
             } catch (\Exception $e) {
                 $cleared = false;
             }
-            if ($cleared = true === $cleared || array() === $cleared) {
+            if ($cleared = true === $cleared || [] === $cleared) {
                 $this->namespaceVersion = $namespaceVersion;
-                $this->ids = array();
+                $this->ids = [];
             }
         }
 
         try {
             return $this->doClear($this->namespace) || $cleared;
         } catch (\Exception $e) {
-            CacheItem::log($this->logger, 'Failed to clear the cache', array('exception' => $e));
+            CacheItem::log($this->logger, 'Failed to clear the cache', ['exception' => $e]);
 
             return false;
         }
@@ -133,7 +133,7 @@ public function clear()
      */
     public function deleteItem($key)
     {
-        return $this->deleteItems(array($key));
+        return $this->deleteItems([$key]);
     }
 
     /**
@@ -141,7 +141,7 @@ public function deleteItem($key)
      */
     public function deleteItems(array $keys)
     {
-        $ids = array();
+        $ids = [];
 
         foreach ($keys as $key) {
             $ids[$key] = $this->getId($key);
@@ -161,12 +161,12 @@ public function deleteItems(array $keys)
         foreach ($ids as $key => $id) {
             try {
                 $e = null;
-                if ($this->doDelete(array($id))) {
+                if ($this->doDelete([$id])) {
                     continue;
                 }
             } catch (\Exception $e) {
             }
-            CacheItem::log($this->logger, 'Failed to delete key "{key}"', array('key' => $key, 'exception' => $e));
+            CacheItem::log($this->logger, 'Failed to delete key "{key}"', ['key' => $key, 'exception' => $e]);
             $ok = false;
         }
 
@@ -190,7 +190,7 @@ public function enableVersioning($enable = true)
         $wasEnabled = $this->versioningIsEnabled;
         $this->versioningIsEnabled = (bool) $enable;
         $this->namespaceVersion = '';
-        $this->ids = array();
+        $this->ids = [];
 
         return $wasEnabled;
     }
@@ -204,7 +204,7 @@ public function reset()
             $this->commit();
         }
         $this->namespaceVersion = '';
-        $this->ids = array();
+        $this->ids = [];
     }
 
     /**
@@ -241,15 +241,15 @@ protected static function unserialize($value)
     private function getId($key)
     {
         if ($this->versioningIsEnabled && '' === $this->namespaceVersion) {
-            $this->ids = array();
+            $this->ids = [];
             $this->namespaceVersion = '1/';
             try {
-                foreach ($this->doFetch(array('/'.$this->namespace)) as $v) {
+                foreach ($this->doFetch(['/'.$this->namespace]) as $v) {
                     $this->namespaceVersion = $v;
                 }
                 if ('1:' === $this->namespaceVersion) {
                     $this->namespaceVersion = substr_replace(base64_encode(pack('V', time())), ':', 5);
-                    $this->doSave(array('@'.$this->namespace => $this->namespaceVersion), 0);
+                    $this->doSave(['@'.$this->namespace => $this->namespaceVersion], 0);
                 }
             } catch (\Exception $e) {
             }
diff --git a/src/Symfony/Component/Cache/Traits/ApcuTrait.php b/src/Symfony/Component/Cache/Traits/ApcuTrait.php
index a93fc812a1a5..c86b043ae120 100644
--- a/src/Symfony/Component/Cache/Traits/ApcuTrait.php
+++ b/src/Symfony/Component/Cache/Traits/ApcuTrait.php
@@ -53,8 +53,8 @@ protected function doFetch(array $ids)
     {
         $unserializeCallbackHandler = ini_set('unserialize_callback_func', __CLASS__.'::handleUnserializeCallback');
         try {
-            $values = array();
-            foreach (apcu_fetch($ids, $ok) ?: array() as $k => $v) {
+            $values = [];
+            foreach (apcu_fetch($ids, $ok) ?: [] as $k => $v) {
                 if (null !== $v || $ok) {
                     $values[$k] = $v;
                 }
diff --git a/src/Symfony/Component/Cache/Traits/ArrayTrait.php b/src/Symfony/Component/Cache/Traits/ArrayTrait.php
index 8268e40db414..e585c3d48cb5 100644
--- a/src/Symfony/Component/Cache/Traits/ArrayTrait.php
+++ b/src/Symfony/Component/Cache/Traits/ArrayTrait.php
@@ -24,8 +24,8 @@ trait ArrayTrait
     use LoggerAwareTrait;
 
     private $storeSerialized;
-    private $values = array();
-    private $expiries = array();
+    private $values = [];
+    private $expiries = [];
 
     /**
      * Returns all cached values, with cache miss as null.
@@ -69,7 +69,7 @@ public function hasItem($key)
      */
     public function clear()
     {
-        $this->values = $this->expiries = array();
+        $this->values = $this->expiries = [];
 
         return true;
     }
@@ -128,7 +128,7 @@ private function freeze($value, $key)
                 $serialized = serialize($value);
             } catch (\Exception $e) {
                 $type = \is_object($value) ? \get_class($value) : \gettype($value);
-                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => $key, 'type' => $type, 'exception' => $e));
+                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', ['key' => $key, 'type' => $type, 'exception' => $e]);
 
                 return;
             }
@@ -150,7 +150,7 @@ private function unfreeze(string $key, bool &$isHit)
             try {
                 $value = unserialize($value);
             } catch (\Exception $e) {
-                CacheItem::log($this->logger, 'Failed to unserialize key "{key}"', array('key' => $key, 'exception' => $e));
+                CacheItem::log($this->logger, 'Failed to unserialize key "{key}"', ['key' => $key, 'exception' => $e]);
                 $value = false;
             }
             if (false === $value) {
diff --git a/src/Symfony/Component/Cache/Traits/ContractsTrait.php b/src/Symfony/Component/Cache/Traits/ContractsTrait.php
index f755e65fc327..8b1eb5a24427 100644
--- a/src/Symfony/Component/Cache/Traits/ContractsTrait.php
+++ b/src/Symfony/Component/Cache/Traits/ContractsTrait.php
@@ -30,7 +30,7 @@ trait ContractsTrait
         doGet as private contractsGet;
     }
 
-    private $callbackWrapper = array(LockRegistry::class, 'compute');
+    private $callbackWrapper = [LockRegistry::class, 'compute'];
 
     /**
      * Wraps the callback passed to ->get() in a callable.
diff --git a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
index 1e1718a4127e..b25f29f5240c 100644
--- a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
+++ b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
@@ -24,12 +24,12 @@
  */
 trait MemcachedTrait
 {
-    private static $defaultClientOptions = array(
+    private static $defaultClientOptions = [
         'persistent_id' => null,
         'username' => null,
         'password' => null,
         'serializer' => 'php',
-    );
+    ];
 
     private $marshaller;
     private $client;
@@ -77,10 +77,10 @@ private function init(\Memcached $client, $namespace, $defaultLifetime, ?Marshal
      *
      * @throws \ErrorException When invalid options or servers are provided
      */
-    public static function createConnection($servers, array $options = array())
+    public static function createConnection($servers, array $options = [])
     {
         if (\is_string($servers)) {
-            $servers = array($servers);
+            $servers = [$servers];
         } elseif (!\is_array($servers)) {
             throw new InvalidArgumentException(sprintf('MemcachedAdapter::createClient() expects array or string as first argument, %s given.', \gettype($servers)));
         }
@@ -104,7 +104,7 @@ public static function createConnection($servers, array $options = array())
                 }
                 $params = preg_replace_callback('#^memcached:(//)?(?:([^@]*+)@)?#', function ($m) use (&$username, &$password) {
                     if (!empty($m[2])) {
-                        list($username, $password) = explode(':', $m[2], 2) + array(1 => null);
+                        list($username, $password) = explode(':', $m[2], 2) + [1 => null];
                     }
 
                     return 'file:'.($m[1] ?? '');
@@ -112,7 +112,7 @@ public static function createConnection($servers, array $options = array())
                 if (false === $params = parse_url($params)) {
                     throw new InvalidArgumentException(sprintf('Invalid Memcached DSN: %s', $dsn));
                 }
-                $query = $hosts = array();
+                $query = $hosts = [];
                 if (isset($params['query'])) {
                     parse_str($params['query'], $query);
 
@@ -122,9 +122,9 @@ public static function createConnection($servers, array $options = array())
                         }
                         foreach ($hosts as $host => $weight) {
                             if (false === $port = strrpos($host, ':')) {
-                                $hosts[$host] = array($host, 11211, (int) $weight);
+                                $hosts[$host] = [$host, 11211, (int) $weight];
                             } else {
-                                $hosts[$host] = array(substr($host, 0, $port), (int) substr($host, 1 + $port), (int) $weight);
+                                $hosts[$host] = [substr($host, 0, $port), (int) substr($host, 1 + $port), (int) $weight];
                             }
                         }
                         $hosts = array_values($hosts);
@@ -143,17 +143,17 @@ public static function createConnection($servers, array $options = array())
                     $params['weight'] = $m[1];
                     $params['path'] = substr($params['path'], 0, -\strlen($m[0]));
                 }
-                $params += array(
+                $params += [
                     'host' => isset($params['host']) ? $params['host'] : $params['path'],
                     'port' => isset($params['host']) ? 11211 : null,
                     'weight' => 0,
-                );
+                ];
                 if ($query) {
                     $params += $query;
                     $options = $query + $options;
                 }
 
-                $servers[$i] = array($params['host'], $params['port'], $params['weight']);
+                $servers[$i] = [$params['host'], $params['port'], $params['weight']];
 
                 if ($hosts) {
                     $servers = array_merge($servers, $hosts);
@@ -185,12 +185,12 @@ public static function createConnection($servers, array $options = array())
 
             // set client's servers, taking care of persistent connections
             if (!$client->isPristine()) {
-                $oldServers = array();
+                $oldServers = [];
                 foreach ($client->getServerList() as $server) {
-                    $oldServers[] = array($server['host'], $server['port']);
+                    $oldServers[] = [$server['host'], $server['port']];
                 }
 
-                $newServers = array();
+                $newServers = [];
                 foreach ($servers as $server) {
                     if (1 < \count($server)) {
                         $server = array_values($server);
@@ -234,7 +234,7 @@ protected function doSave(array $values, $lifetime)
             $lifetime += time();
         }
 
-        $encodedValues = array();
+        $encodedValues = [];
         foreach ($values as $key => $value) {
             $encodedValues[rawurlencode($key)] = $value;
         }
@@ -252,7 +252,7 @@ protected function doFetch(array $ids)
 
             $encodedResult = $this->checkResultCode($this->getClient()->getMulti($encodedIds));
 
-            $result = array();
+            $result = [];
             foreach ($encodedResult as $key => $value) {
                 $result[rawurldecode($key)] = $this->marshaller->unmarshall($value);
             }
diff --git a/src/Symfony/Component/Cache/Traits/PdoTrait.php b/src/Symfony/Component/Cache/Traits/PdoTrait.php
index ea4feee4ac42..9917bd91f545 100644
--- a/src/Symfony/Component/Cache/Traits/PdoTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PdoTrait.php
@@ -37,7 +37,7 @@ trait PdoTrait
     private $timeCol = 'item_time';
     private $username = '';
     private $password = '';
-    private $connectionOptions = array();
+    private $connectionOptions = [];
     private $namespace;
 
     private function init($connOrDsn, $namespace, $defaultLifetime, array $options, ?MarshallerInterface $marshaller)
@@ -90,24 +90,24 @@ public function createTable()
         $conn = $this->getConnection();
 
         if ($conn instanceof Connection) {
-            $types = array(
+            $types = [
                 'mysql' => 'binary',
                 'sqlite' => 'text',
                 'pgsql' => 'string',
                 'oci' => 'string',
                 'sqlsrv' => 'string',
-            );
+            ];
             if (!isset($types[$this->driver])) {
                 throw new \DomainException(sprintf('Creating the cache table is currently not implemented for PDO driver "%s".', $this->driver));
             }
 
             $schema = new Schema();
             $table = $schema->createTable($this->table);
-            $table->addColumn($this->idCol, $types[$this->driver], array('length' => 255));
-            $table->addColumn($this->dataCol, 'blob', array('length' => 16777215));
-            $table->addColumn($this->lifetimeCol, 'integer', array('unsigned' => true, 'notnull' => false));
-            $table->addColumn($this->timeCol, 'integer', array('unsigned' => true));
-            $table->setPrimaryKey(array($this->idCol));
+            $table->addColumn($this->idCol, $types[$this->driver], ['length' => 255]);
+            $table->addColumn($this->dataCol, 'blob', ['length' => 16777215]);
+            $table->addColumn($this->lifetimeCol, 'integer', ['unsigned' => true, 'notnull' => false]);
+            $table->addColumn($this->timeCol, 'integer', ['unsigned' => true]);
+            $table->setPrimaryKey([$this->idCol]);
 
             foreach ($schema->toSql($conn->getDatabasePlatform()) as $sql) {
                 $conn->exec($sql);
@@ -175,7 +175,7 @@ public function prune()
     protected function doFetch(array $ids)
     {
         $now = time();
-        $expired = array();
+        $expired = [];
 
         $sql = str_pad('', (\count($ids) << 1) - 1, '?,');
         $sql = "SELECT $this->idCol, CASE WHEN $this->lifetimeCol IS NULL OR $this->lifetimeCol + $this->timeCol > ? THEN $this->dataCol ELSE NULL END FROM $this->table WHERE $this->idCol IN ($sql)";
@@ -309,7 +309,7 @@ protected function doSave(array $values, $lifetime)
         try {
             $stmt = $conn->prepare($sql);
         } catch (TableNotFoundException $e) {
-            if (!$conn->isTransactionActive() || \in_array($this->driver, array('pgsql', 'sqlite', 'sqlsrv'), true)) {
+            if (!$conn->isTransactionActive() || \in_array($this->driver, ['pgsql', 'sqlite', 'sqlsrv'], true)) {
                 $this->createTable();
             }
             $stmt = $conn->prepare($sql);
diff --git a/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php b/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
index 587da5a498ca..3d3bab97de17 100644
--- a/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
@@ -57,7 +57,7 @@ public function warmUp(array $values)
         }
 
         $dumpedValues = '';
-        $dumpedMap = array();
+        $dumpedMap = [];
         $dump = <<<'EOF'
 <?php
 
@@ -124,7 +124,7 @@ public function warmUp(array $values)
      */
     public function clear()
     {
-        $this->keys = $this->values = array();
+        $this->keys = $this->values = [];
 
         $cleared = @unlink($this->file) || !file_exists($this->file);
 
@@ -137,14 +137,14 @@ public function clear()
     private function initialize()
     {
         if (!file_exists($this->file)) {
-            $this->keys = $this->values = array();
+            $this->keys = $this->values = [];
 
             return;
         }
-        $values = (include $this->file) ?: array(array(), array());
+        $values = (include $this->file) ?: [[], []];
 
         if (2 !== \count($values) || !isset($values[0], $values[1])) {
-            $this->keys = $this->values = array();
+            $this->keys = $this->values = [];
         } else {
             list($this->keys, $this->values) = $values;
         }
diff --git a/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php b/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
index 636ad3d99bd9..dd7518a47a5b 100644
--- a/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
@@ -31,8 +31,8 @@ trait PhpFilesTrait
 
     private $includeHandler;
     private $appendOnly;
-    private $values = array();
-    private $files = array();
+    private $values = [];
+    private $files = [];
 
     private static $startTime;
 
@@ -78,13 +78,13 @@ protected function doFetch(array $ids)
     {
         if ($this->appendOnly) {
             $now = 0;
-            $missingIds = array();
+            $missingIds = [];
         } else {
             $now = time();
             $missingIds = $ids;
-            $ids = array();
+            $ids = [];
         }
-        $values = array();
+        $values = [];
 
         begin:
         foreach ($ids as $id) {
@@ -124,7 +124,7 @@ protected function doFetch(array $ids)
         }
 
         $ids = $missingIds;
-        $missingIds = array();
+        $missingIds = [];
         goto begin;
     }
 
@@ -215,7 +215,7 @@ protected function doSave(array $values, $lifetime)
      */
     protected function doClear($namespace)
     {
-        $this->values = array();
+        $this->values = [];
 
         return $this->doCommonClear($namespace);
     }
diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
index a7224d216fbe..43dbb4363965 100644
--- a/src/Symfony/Component/Cache/Traits/RedisTrait.php
+++ b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -27,7 +27,7 @@
  */
 trait RedisTrait
 {
-    private static $defaultConnectionOptions = array(
+    private static $defaultConnectionOptions = [
         'class' => null,
         'persistent' => 0,
         'persistent_id' => null,
@@ -40,7 +40,7 @@ trait RedisTrait
         'redis_cluster' => false,
         'dbindex' => 0,
         'failover' => 'none',
-    );
+    ];
     private $redis;
     private $marshaller;
 
@@ -78,7 +78,7 @@ private function init($redisClient, $namespace, $defaultLifetime, ?MarshallerInt
      *
      * @return \Redis|\RedisCluster|\Predis\Client According to the "class" option
      */
-    public static function createConnection($dsn, array $options = array())
+    public static function createConnection($dsn, array $options = [])
     {
         if (0 !== strpos($dsn, 'redis:')) {
             throw new InvalidArgumentException(sprintf('Invalid Redis DSN: %s does not start with "redis:".', $dsn));
@@ -100,7 +100,7 @@ public static function createConnection($dsn, array $options = array())
             throw new InvalidArgumentException(sprintf('Invalid Redis DSN: %s', $dsn));
         }
 
-        $query = $hosts = array();
+        $query = $hosts = [];
 
         if (isset($params['query'])) {
             parse_str($params['query'], $query);
@@ -114,11 +114,11 @@ public static function createConnection($dsn, array $options = array())
                         parse_str($parameters, $parameters);
                     }
                     if (false === $i = strrpos($host, ':')) {
-                        $hosts[$host] = array('scheme' => 'tcp', 'host' => $host, 'port' => 6379) + $parameters;
+                        $hosts[$host] = ['scheme' => 'tcp', 'host' => $host, 'port' => 6379] + $parameters;
                     } elseif ($port = (int) substr($host, 1 + $i)) {
-                        $hosts[$host] = array('scheme' => 'tcp', 'host' => substr($host, 0, $i), 'port' => $port) + $parameters;
+                        $hosts[$host] = ['scheme' => 'tcp', 'host' => substr($host, 0, $i), 'port' => $port] + $parameters;
                     } else {
-                        $hosts[$host] = array('scheme' => 'unix', 'path' => substr($host, 0, $i)) + $parameters;
+                        $hosts[$host] = ['scheme' => 'unix', 'path' => substr($host, 0, $i)] + $parameters;
                     }
                 }
                 $hosts = array_values($hosts);
@@ -132,9 +132,9 @@ public static function createConnection($dsn, array $options = array())
             }
 
             if (isset($params['host'])) {
-                array_unshift($hosts, array('scheme' => 'tcp', 'host' => $params['host'], 'port' => $params['port'] ?? 6379));
+                array_unshift($hosts, ['scheme' => 'tcp', 'host' => $params['host'], 'port' => $params['port'] ?? 6379]);
             } else {
-                array_unshift($hosts, array('scheme' => 'unix', 'path' => $params['path']));
+                array_unshift($hosts, ['scheme' => 'unix', 'path' => $params['path']]);
             }
         }
 
@@ -243,13 +243,13 @@ public static function createConnection($dsn, array $options = array())
             if ($params['redis_cluster']) {
                 $params['cluster'] = 'redis';
             }
-            $params += array('parameters' => array());
-            $params['parameters'] += array(
+            $params += ['parameters' => []];
+            $params['parameters'] += [
                 'persistent' => $params['persistent'],
                 'timeout' => $params['timeout'],
                 'read_write_timeout' => $params['read_timeout'],
                 'tcp_nodelay' => true,
-            );
+            ];
             if ($params['dbindex']) {
                 $params['parameters']['database'] = $params['dbindex'];
             }
@@ -258,9 +258,9 @@ public static function createConnection($dsn, array $options = array())
             }
             if (1 === \count($hosts) && !$params['redis_cluster']) {
                 $hosts = $hosts[0];
-            } elseif (\in_array($params['failover'], array('slaves', 'distribute'), true) && !isset($params['replication'])) {
+            } elseif (\in_array($params['failover'], ['slaves', 'distribute'], true) && !isset($params['replication'])) {
                 $params['replication'] = true;
-                $hosts[0] += array('alias' => 'master');
+                $hosts[0] += ['alias' => 'master'];
             }
 
             $redis = new $class($hosts, array_diff_key($params, self::$defaultConnectionOptions));
@@ -279,15 +279,15 @@ public static function createConnection($dsn, array $options = array())
     protected function doFetch(array $ids)
     {
         if (!$ids) {
-            return array();
+            return [];
         }
 
-        $result = array();
+        $result = [];
 
         if ($this->redis instanceof \Predis\Client) {
             $values = $this->pipeline(function () use ($ids) {
                 foreach ($ids as $id) {
-                    yield 'get' => array($id);
+                    yield 'get' => [$id];
                 }
             });
         } else {
@@ -317,26 +317,26 @@ protected function doHave($id)
     protected function doClear($namespace)
     {
         $cleared = true;
-        $hosts = array($this->redis);
-        $evalArgs = array(array($namespace), 0);
+        $hosts = [$this->redis];
+        $evalArgs = [[$namespace], 0];
 
         if ($this->redis instanceof \Predis\Client) {
-            $evalArgs = array(0, $namespace);
+            $evalArgs = [0, $namespace];
 
             $connection = $this->redis->getConnection();
             if ($connection instanceof ClusterInterface && $connection instanceof \Traversable) {
-                $hosts = array();
+                $hosts = [];
                 foreach ($connection as $c) {
                     $hosts[] = new \Predis\Client($c);
                 }
             }
         } elseif ($this->redis instanceof \RedisArray) {
-            $hosts = array();
+            $hosts = [];
             foreach ($this->redis->_hosts() as $host) {
                 $hosts[] = $this->redis->_instance($host);
             }
         } elseif ($this->redis instanceof RedisClusterProxy || $this->redis instanceof \RedisCluster) {
-            $hosts = array();
+            $hosts = [];
             foreach ($this->redis->_masters() as $host) {
                 $hosts[] = $h = new \Redis();
                 $h->connect($host[0], $host[1]);
@@ -388,7 +388,7 @@ protected function doDelete(array $ids)
         if ($this->redis instanceof \Predis\Client) {
             $this->pipeline(function () use ($ids) {
                 foreach ($ids as $id) {
-                    yield 'del' => array($id);
+                    yield 'del' => [$id];
                 }
             })->rewind();
         } else {
@@ -410,9 +410,9 @@ protected function doSave(array $values, $lifetime)
         $results = $this->pipeline(function () use ($values, $lifetime) {
             foreach ($values as $id => $value) {
                 if (0 >= $lifetime) {
-                    yield 'set' => array($id, $value);
+                    yield 'set' => [$id, $value];
                 } else {
-                    yield 'setEx' => array($id, $lifetime, $value);
+                    yield 'setEx' => [$id, $lifetime, $value];
                 }
             }
         });
@@ -427,13 +427,13 @@ protected function doSave(array $values, $lifetime)
 
     private function pipeline(\Closure $generator)
     {
-        $ids = array();
+        $ids = [];
 
         if ($this->redis instanceof RedisClusterProxy || $this->redis instanceof \RedisCluster || ($this->redis instanceof \Predis\Client && $this->redis->getConnection() instanceof RedisCluster)) {
             // phpredis & predis don't support pipelining with RedisCluster
             // see https://github.com/phpredis/phpredis/blob/develop/cluster.markdown#pipelining
             // see https://github.com/nrk/predis/issues/267#issuecomment-123781423
-            $results = array();
+            $results = [];
             foreach ($generator() as $command => $args) {
                 $results[] = $this->redis->{$command}(...$args);
                 $ids[] = $args[0];
@@ -446,14 +446,14 @@ private function pipeline(\Closure $generator)
                 }
             });
         } elseif ($this->redis instanceof \RedisArray) {
-            $connections = $results = $ids = array();
+            $connections = $results = $ids = [];
             foreach ($generator() as $command => $args) {
                 if (!isset($connections[$h = $this->redis->_target($args[0])])) {
-                    $connections[$h] = array($this->redis->_instance($h), -1);
+                    $connections[$h] = [$this->redis->_instance($h), -1];
                     $connections[$h][0]->multi(\Redis::PIPELINE);
                 }
                 $connections[$h][0]->{$command}(...$args);
-                $results[] = array($h, ++$connections[$h][1]);
+                $results[] = [$h, ++$connections[$h][1]];
                 $ids[] = $args[0];
             }
             foreach ($connections as $h => $c) {
diff --git a/src/Symfony/Component/Config/Definition/ArrayNode.php b/src/Symfony/Component/Config/Definition/ArrayNode.php
index b221fafeeb9a..dd908c999e38 100644
--- a/src/Symfony/Component/Config/Definition/ArrayNode.php
+++ b/src/Symfony/Component/Config/Definition/ArrayNode.php
@@ -306,7 +306,7 @@ protected function normalizeValue($value)
         if (\count($value) && !$this->ignoreExtraKeys) {
             $proposals = array_keys($this->children);
             sort($proposals);
-            $guesses = array();
+            $guesses = [];
 
             foreach (array_keys($value) as $subject) {
                 $minScore = INF;
diff --git a/src/Symfony/Component/Config/Loader/FileLoader.php b/src/Symfony/Component/Config/Loader/FileLoader.php
index d7bf2c955996..ab48492a4b21 100644
--- a/src/Symfony/Component/Config/Loader/FileLoader.php
+++ b/src/Symfony/Component/Config/Loader/FileLoader.php
@@ -93,7 +93,7 @@ public function import($resource, $type = null, $ignoreErrors = false, $sourceRe
     /**
      * @internal
      */
-    protected function glob(string $pattern, bool $recursive, &$resource = null, bool $ignoreErrors = false, bool $forExclusion = false, array $excluded = array())
+    protected function glob(string $pattern, bool $recursive, &$resource = null, bool $ignoreErrors = false, bool $forExclusion = false, array $excluded = [])
     {
         if (\strlen($pattern) === $i = strcspn($pattern, '*?{[')) {
             $prefix = $pattern;
diff --git a/src/Symfony/Component/Config/Resource/GlobResource.php b/src/Symfony/Component/Config/Resource/GlobResource.php
index bd110d72f5d9..195a8e5eec99 100644
--- a/src/Symfony/Component/Config/Resource/GlobResource.php
+++ b/src/Symfony/Component/Config/Resource/GlobResource.php
@@ -37,7 +37,7 @@ class GlobResource implements \IteratorAggregate, SelfCheckingResourceInterface,
      *
      * @throws \InvalidArgumentException
      */
-    public function __construct(?string $prefix, string $pattern, bool $recursive, bool $forExclusion = false, array $excludedPrefixes = array())
+    public function __construct(?string $prefix, string $pattern, bool $recursive, bool $forExclusion = false, array $excludedPrefixes = [])
     {
         $this->prefix = realpath($prefix) ?: (file_exists($prefix) ? $prefix : false);
         $this->pattern = $pattern;
@@ -83,12 +83,12 @@ public function serialize()
             $this->hash = $this->computeHash();
         }
 
-        return serialize(array($this->prefix, $this->pattern, $this->recursive, $this->hash, $this->forExclusion, $this->excludedPrefixes));
+        return serialize([$this->prefix, $this->pattern, $this->recursive, $this->hash, $this->forExclusion, $this->excludedPrefixes]);
     }
 
     public function unserialize($serialized)
     {
-        list($this->prefix, $this->pattern, $this->recursive, $this->hash, $this->forExclusion, $this->excludedPrefixes) = unserialize($serialized) + array(4 => false, array());
+        list($this->prefix, $this->pattern, $this->recursive, $this->hash, $this->forExclusion, $this->excludedPrefixes) = unserialize($serialized) + [4 => false, []];
     }
 
     public function getIterator()
diff --git a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
index 21b1972feb07..04a9aafd4481 100644
--- a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
+++ b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
@@ -160,7 +160,7 @@ private function generateSignature(\ReflectionClass $class)
 
         if (interface_exists(LegacyServiceSubscriberInterface::class, false) && $class->isSubclassOf(LegacyServiceSubscriberInterface::class)) {
             yield LegacyServiceSubscriberInterface::class;
-            yield print_r(array($class->name, 'getSubscribedServices')(), true);
+            yield print_r([$class->name, 'getSubscribedServices'](), true);
         } elseif (interface_exists(ServiceSubscriberInterface::class, false) && $class->isSubclassOf(ServiceSubscriberInterface::class)) {
             yield ServiceSubscriberInterface::class;
             yield print_r($class->name::getSubscribedServices(), true);
diff --git a/src/Symfony/Component/Config/Tests/Definition/ArrayNodeTest.php b/src/Symfony/Component/Config/Tests/Definition/ArrayNodeTest.php
index cc224346c0e6..771057d0b359 100644
--- a/src/Symfony/Component/Config/Tests/Definition/ArrayNodeTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/ArrayNodeTest.php
@@ -47,7 +47,7 @@ public function testNormalizeWithProposals()
         $node->addChild(new ArrayNode('alpha1'));
         $node->addChild(new ArrayNode('alpha2'));
         $node->addChild(new ArrayNode('beta'));
-        $node->normalize(array('alpha3' => 'foo'));
+        $node->normalize(['alpha3' => 'foo']);
     }
 
     /**
@@ -59,7 +59,7 @@ public function testNormalizeWithoutProposals()
         $node = new ArrayNode('root');
         $node->addChild(new ArrayNode('alpha1'));
         $node->addChild(new ArrayNode('alpha2'));
-        $node->normalize(array('beta' => 'foo'));
+        $node->normalize(['beta' => 'foo']);
     }
 
     public function ignoreAndRemoveMatrixProvider()
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
index 0d4cad96bdc1..0aa2a08ab40c 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/ArrayNodeDefinitionTest.php
@@ -50,13 +50,13 @@ public function testPrototypeNodeSpecificOption($method, $args)
 
     public function providePrototypeNodeSpecificCalls()
     {
-        return array(
-            array('defaultValue', array(array())),
-            array('addDefaultChildrenIfNoneSet', array()),
-            array('requiresAtLeastOneElement', array()),
-            array('cannotBeEmpty', array()),
-            array('useAttributeAsKey', array('foo')),
-        );
+        return [
+            ['defaultValue', [[]]],
+            ['addDefaultChildrenIfNoneSet', []],
+            ['requiresAtLeastOneElement', []],
+            ['cannotBeEmpty', []],
+            ['useAttributeAsKey', ['foo']],
+        ];
     }
 
     /**
@@ -79,7 +79,7 @@ public function testPrototypeNodesCantHaveADefaultValueWhenUsingDefaultChildren(
     {
         $node = new ArrayNodeDefinition('root');
         $node
-            ->defaultValue(array())
+            ->defaultValue([])
             ->addDefaultChildrenIfNoneSet('foo')
             ->prototype('array')
         ;
@@ -94,7 +94,7 @@ public function testPrototypedArrayNodeDefaultWhenUsingDefaultChildren()
             ->prototype('array')
         ;
         $tree = $node->getNode();
-        $this->assertEquals(array(array()), $tree->getDefaultValue());
+        $this->assertEquals([[]], $tree->getDefaultValue());
     }
 
     /**
@@ -134,14 +134,14 @@ public function testPrototypedArrayNodeDefault($args, $shouldThrowWhenUsingAttrA
 
     public function providePrototypedArrayNodeDefaults()
     {
-        return array(
-            array(null, true, false, array(array())),
-            array(2, true, false, array(array(), array())),
-            array('2', false, true, array('2' => array())),
-            array('foo', false, true, array('foo' => array())),
-            array(array('foo'), false, true, array('foo' => array())),
-            array(array('foo', 'bar'), false, true, array('foo' => array(), 'bar' => array())),
-        );
+        return [
+            [null, true, false, [[]]],
+            [2, true, false, [[], []]],
+            ['2', false, true, ['2' => []]],
+            ['foo', false, true, ['foo' => []]],
+            [['foo'], false, true, ['foo' => []]],
+            [['foo', 'bar'], false, true, ['foo' => [], 'bar' => []]],
+        ];
     }
 
     public function testNestedPrototypedArrayNodes()
@@ -167,7 +167,7 @@ public function testEnabledNodeDefaults()
                 ->scalarNode('foo')->defaultValue('bar')->end()
         ;
 
-        $this->assertEquals(array('enabled' => false, 'foo' => 'bar'), $node->getNode()->getDefaultValue());
+        $this->assertEquals(['enabled' => false, 'foo' => 'bar'], $node->getNode()->getDefaultValue());
     }
 
     /**
@@ -196,9 +196,9 @@ public function testCanBeDisabled()
         $node->canBeDisabled();
 
         $this->assertTrue($this->getField($node, 'addDefaults'));
-        $this->assertEquals(array('enabled' => false), $this->getField($node, 'falseEquivalent'));
-        $this->assertEquals(array('enabled' => true), $this->getField($node, 'trueEquivalent'));
-        $this->assertEquals(array('enabled' => true), $this->getField($node, 'nullEquivalent'));
+        $this->assertEquals(['enabled' => false], $this->getField($node, 'falseEquivalent'));
+        $this->assertEquals(['enabled' => true], $this->getField($node, 'trueEquivalent'));
+        $this->assertEquals(['enabled' => true], $this->getField($node, 'nullEquivalent'));
 
         $nodeChildren = $this->getField($node, 'children');
         $this->assertArrayHasKey('enabled', $nodeChildren);
@@ -248,7 +248,7 @@ public function testUnsetChild()
             ->end()
         ;
 
-        $this->assertSame(array(), $node->getNode()->normalize(array('value' => null)));
+        $this->assertSame([], $node->getNode()->normalize(['value' => null]));
     }
 
     public function testPrototypeVariable()
@@ -295,14 +295,14 @@ public function testPrototypeEnum()
 
     public function getEnableableNodeFixtures()
     {
-        return array(
-            array(array('enabled' => true, 'foo' => 'bar'), array(true), 'true enables an enableable node'),
-            array(array('enabled' => true, 'foo' => 'bar'), array(null), 'null enables an enableable node'),
-            array(array('enabled' => true, 'foo' => 'bar'), array(array('enabled' => true)), 'An enableable node can be enabled'),
-            array(array('enabled' => true, 'foo' => 'baz'), array(array('foo' => 'baz')), 'any configuration enables an enableable node'),
-            array(array('enabled' => false, 'foo' => 'baz'), array(array('foo' => 'baz', 'enabled' => false)), 'An enableable node can be disabled'),
-            array(array('enabled' => false, 'foo' => 'bar'), array(false), 'false disables an enableable node'),
-        );
+        return [
+            [['enabled' => true, 'foo' => 'bar'], [true], 'true enables an enableable node'],
+            [['enabled' => true, 'foo' => 'bar'], [null], 'null enables an enableable node'],
+            [['enabled' => true, 'foo' => 'bar'], [['enabled' => true]], 'An enableable node can be enabled'],
+            [['enabled' => true, 'foo' => 'baz'], [['foo' => 'baz']], 'any configuration enables an enableable node'],
+            [['enabled' => false, 'foo' => 'baz'], [['foo' => 'baz', 'enabled' => false]], 'An enableable node can be disabled'],
+            [['enabled' => false, 'foo' => 'bar'], [false], 'false disables an enableable node'],
+        ];
     }
 
     public function testRequiresAtLeastOneElement()
@@ -312,7 +312,7 @@ public function testRequiresAtLeastOneElement()
             ->requiresAtLeastOneElement()
             ->integerPrototype();
 
-        $node->getNode()->finalize(array(1));
+        $node->getNode()->finalize([1]);
 
         $this->addToAssertionCount(1);
     }
@@ -328,7 +328,7 @@ public function testCannotBeEmpty()
             ->cannotBeEmpty()
             ->integerPrototype();
 
-        $node->getNode()->finalize(array());
+        $node->getNode()->finalize([]);
     }
 
     public function testSetDeprecated()
@@ -354,7 +354,7 @@ public function testCannotBeEmptyOnConcreteNode()
         $node = new ArrayNodeDefinition('root');
         $node->cannotBeEmpty();
 
-        $node->getNode()->finalize(array());
+        $node->getNode()->finalize([]);
     }
 
     protected function getField($object, $field)
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
index 27c8ea231d24..0dae83be41d9 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
@@ -115,7 +115,7 @@ public function testDefinitionExampleGetsTransferredToNode()
         $builder = new TreeBuilder('test');
 
         $builder->getRootNode()
-            ->example(array('key' => 'value'))
+            ->example(['key' => 'value'])
             ->children()
                 ->node('child', 'variable')->info('child info')->defaultValue('default')->example('example')
             ->end()
diff --git a/src/Symfony/Component/Config/Tests/Resource/GlobResourceTest.php b/src/Symfony/Component/Config/Tests/Resource/GlobResourceTest.php
index 0f8504a89319..5e0b248002d2 100644
--- a/src/Symfony/Component/Config/Tests/Resource/GlobResourceTest.php
+++ b/src/Symfony/Component/Config/Tests/Resource/GlobResourceTest.php
@@ -62,7 +62,7 @@ public function testIteratorForExclusionDoesntIterateThroughSubfolders()
     public function testIteratorSkipsFoldersForGivenExcludedPrefixes()
     {
         $dir = \dirname(__DIR__).\DIRECTORY_SEPARATOR.'Fixtures';
-        $resource = new GlobResource($dir, '/*Exclude*', true, false, array($dir.\DIRECTORY_SEPARATOR.'Exclude' => true));
+        $resource = new GlobResource($dir, '/*Exclude*', true, false, [$dir.\DIRECTORY_SEPARATOR.'Exclude' => true]);
 
   
10000
      $paths = iterator_to_array($resource);
 
@@ -76,7 +76,7 @@ public function testIteratorSkipsFoldersForGivenExcludedPrefixes()
     public function testIteratorSkipsSubfoldersForGivenExcludedPrefixes()
     {
         $dir = \dirname(__DIR__).\DIRECTORY_SEPARATOR.'Fixtures';
-        $resource = new GlobResource($dir, '/*Exclude/*', true, false, array($dir.\DIRECTORY_SEPARATOR.'Exclude' => true));
+        $resource = new GlobResource($dir, '/*Exclude/*', true, false, [$dir.\DIRECTORY_SEPARATOR.'Exclude' => true]);
 
         $paths = iterator_to_array($resource);
 
@@ -90,7 +90,7 @@ public function testIteratorSkipsSubfoldersForGivenExcludedPrefixes()
     public function testIteratorSkipsFoldersWithForwardSlashForGivenExcludedPrefixes()
     {
         $dir = \dirname(__DIR__).\DIRECTORY_SEPARATOR.'Fixtures';
-        $resource = new GlobResource($dir, '/*Exclude*', true, false, array($dir.'/Exclude' => true));
+        $resource = new GlobResource($dir, '/*Exclude*', true, false, [$dir.'/Exclude' => true]);
 
         $paths = iterator_to_array($resource);
 
diff --git a/src/Symfony/Component/Console/Helper/ProcessHelper.php b/src/Symfony/Component/Console/Helper/ProcessHelper.php
index f03774d35d3f..e3a7c77b3581 100644
--- a/src/Symfony/Component/Console/Helper/ProcessHelper.php
+++ b/src/Symfony/Component/Console/Helper/ProcessHelper.php
@@ -46,17 +46,17 @@ public function run(OutputInterface $output, $cmd, $error = null, callable $call
         $formatter = $this->getHelperSet()->get('debug_formatter');
 
         if ($cmd instanceof Process) {
-            $cmd = array($cmd);
+            $cmd = [$cmd];
         }
 
         if (!\is_array($cmd)) {
             @trigger_error(sprintf('Passing a command as a string to "%s()" is deprecated since Symfony 4.2, pass it the command as an array of arguments instead.', __METHOD__), E_USER_DEPRECATED);
-            $cmd = array(\method_exists(Process::class, 'fromShellCommandline') ? Process::fromShellCommandline($cmd) : new Process($cmd));
+            $cmd = [\method_exists(Process::class, 'fromShellCommandline') ? Process::fromShellCommandline($cmd) : new Process($cmd)];
         }
 
         if (\is_string($cmd[0] ?? null)) {
             $process = new Process($cmd);
-            $cmd = array();
+            $cmd = [];
         } elseif (($cmd[0] ?? null) instanceof Process) {
             $process = $cmd[0];
             unset($cmd[0]);
diff --git a/src/Symfony/Component/Console/Helper/Table.php b/src/Symfony/Component/Console/Helper/Table.php
index 14974529c478..99aa83d4c817 100644
--- a/src/Symfony/Component/Console/Helper/Table.php
+++ b/src/Symfony/Component/Console/Helper/Table.php
@@ -41,17 +41,17 @@ class Table
     /**
      * Table headers.
      */
-    private $headers = array();
+    private $headers = [];
 
     /**
      * Table rows.
      */
-    private $rows = array();
+    private $rows = [];
 
     /**
      * Column widths cache.
      */
-    private $effectiveColumnWidths = array();
+    private $effectiveColumnWidths = [];
 
     /**
      * Number of columns cache.
@@ -73,15 +73,15 @@ class Table
     /**
      * @var array
      */
-    private $columnStyles = array();
+    private $columnStyles = [];
 
     /**
      * User set column widths.
      *
      * @var array
      */
-    private $columnWidths = array();
-    private $columnMaxWidths = array();
+    private $columnWidths = [];
+    private $columnMaxWidths = [];
 
     private static $styles;
 
@@ -212,7 +212,7 @@ public function setColumnWidth($columnIndex, $width)
      */
     public function setColumnWidths(array $widths)
     {
-        $this->columnWidths = array();
+        $this->columnWidths = [];
         foreach ($widths as $index => $width) {
             $this->setColumnWidth($index, $width);
         }
@@ -243,7 +243,7 @@ public function setHeaders(array $headers)
     {
         $headers = array_values($headers);
         if (!empty($headers) && !\is_array($headers[0])) {
-            $headers = array($headers);
+            $headers = [$headers];
         }
 
         $this->headers = $headers;
@@ -253,7 +253,7 @@ public function setHeaders(array $headers)
 
     public function setRows(array $rows)
     {
-        $this->rows = array();
+        $this->rows = [];
 
         return $this->addRows($rows);
     }
@@ -339,7 +339,7 @@ public function setFooterTitle(?string $title): self
      */
     public function render()
     {
-        $rows = array_merge($this->headers, array($divider = new TableSeparator()), $this->rows);
+        $rows = array_merge($this->headers, [$divider = new TableSeparator()], $this->rows);
         $this->calculateNumberOfColumns($rows);
 
         $rows = $this->buildTableRows($rows);
@@ -400,13 +400,13 @@ private function renderRowSeparator(int $type = self::SEPARATOR_MID, string $tit
 
         $crossings = $this->style->getCrossingChars();
         if (self::SEPARATOR_MID === $type) {
-            list($horizontal, $leftChar, $midChar, $rightChar) = array($borders[2], $crossings[8], $crossings[0], $crossings[4]);
+            list($horizontal, $leftChar, $midChar, $rightChar) = [$borders[2], $crossings[8], $crossings[0], $crossings[4]];
         } elseif (self::SEPARATOR_TOP === $type) {
-            list($horizontal, $leftChar, $midChar, $rightChar) = array($borders[0], $crossings[1], $crossings[2], $crossings[3]);
+            list($horizontal, $leftChar, $midChar, $rightChar) = [$borders[0], $crossings[1], $crossings[2], $crossings[3]];
         } elseif (self::SEPARATOR_TOP_BOTTOM === $type) {
-            list($horizontal, $leftChar, $midChar, $rightChar) = array($borders[0], $crossings[9], $crossings[10], $crossings[11]);
+            list($horizontal, $leftChar, $midChar, $rightChar) = [$borders[0], $crossings[9], $crossings[10], $crossings[11]];
         } else {
-            list($horizontal, $leftChar, $midChar, $rightChar) = array($borders[0], $crossings[7], $crossings[6], $crossings[5]);
+            list($horizontal, $leftChar, $midChar, $rightChar) = [$borders[0], $crossings[7], $crossings[6], $crossings[5]];
         }
 
         $markup = $leftChar;
@@ -500,7 +500,7 @@ private function renderCell(array $row, int $column, string $cellFormat)
      */
     private function calculateNumberOfColumns($rows)
     {
-        $columns = array(0);
+        $columns = [0];
         foreach ($rows as $row) {
             if ($row instanceof TableSeparator) {
                 continue;
@@ -516,7 +516,7 @@ private function buildTableRows($rows)
     {
         /** @var WrappableOutputFormatterInterface $formatter */
         $formatter = $this->output->getFormatter();
-        $unmergedRows = array();
+        $unmergedRows = [];
         for ($rowKey = 0; $rowKey < \count($rows); ++$rowKey) {
             $rows = $this->fillNextRows($rows, $rowKey);
 
@@ -531,7 +531,7 @@ private function buildTableRows($rows)
                 $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                 foreach ($lines as $lineKey => $line) {
                     if ($cell instanceof TableCell) {
-                        $line = new TableCell($line, array('colspan' => $cell->getColspan()));
+                        $line = new TableCell($line, ['colspan' => $cell->getColspan()]);
                     }
                     if (0 === $lineKey) {
                         $rows[$rowKey][$column] = $line;
@@ -557,7 +557,7 @@ private function buildTableRows($rows)
 
     private function calculateRowCount(): int
     {
-        $numberOfRows = \count(iterator_to_array($this->buildTableRows(array_merge($this->headers, array(new TableSeparator()), $this->rows))));
+        $numberOfRows = \count(iterator_to_array($this->buildTableRows(array_merge($this->headers, [new TableSeparator()], $this->rows))));
 
         if ($this->headers) {
             ++$numberOfRows; // Add row for header separator
@@ -575,27 +575,27 @@ private function calculateRowCount(): int
      */
     private function fillNextRows(array $rows, int $line): array
     {
-        $unmergedRows = array();
+        $unmergedRows = [];
         foreach ($rows[$line] as $column => $cell) {
             if (null !== $cell && !$cell instanceof TableCell && !is_scalar($cell) && !(\is_object($cell) && method_exists($cell, '__toString'))) {
                 throw new InvalidArgumentException(sprintf('A cell must be a TableCell, a scalar or an object implementing __toString, %s given.', \gettype($cell)));
             }
             if ($cell instanceof TableCell && $cell->getRowspan() > 1) {
                 $nbLines = $cell->getRowspan() - 1;
-                $lines = array($cell);
+                $lines = [$cell];
                 if (strstr($cell, "\n")) {
                     $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                     $nbLines = \count($lines) > $nbLines ? substr_count($cell, "\n") : $nbLines;
 
-                    $rows[$line][$column] = new TableCell($lines[0], array('colspan' => $cell->getColspan()));
+                    $rows[$line][$column] = new TableCell($lines[0], ['colspan' => $cell->getColspan()]);
                     unset($lines[0]);
                 }
 
                 // create a two dimensional array (rowspan x colspan)
-                $unmergedRows = array_replace_recursive(array_fill($line + 1, $nbLines, array()), $unmergedRows);
+                $unmergedRows = array_replace_recursive(array_fill($line + 1, $nbLines, []), $unmergedRows);
                 foreach ($unmergedRows as $unmergedRowKey => $unmergedRow) {
                     $value = isset($lines[$unmergedRowKey - $line]) ? $lines[$unmergedRowKey - $line] : '';
-                    $unmergedRows[$unmergedRowKey][$column] = new TableCell($value, array('colspan' => $cell->getColspan()));
+                    $unmergedRows[$unmergedRowKey][$column] = new TableCell($value, ['colspan' => $cell->getColspan()]);
                     if ($nbLines === $unmergedRowKey - $line) {
                         break;
                     }
@@ -608,7 +608,7 @@ private function fillNextRows(array $rows, int $line): array
             if (isset($rows[$unmergedRowKey]) && \is_array($rows[$unmergedRowKey]) && ($this->getNumberOfColumns($rows[$unmergedRowKey]) + $this->getNumberOfColumns($unmergedRows[$unmergedRowKey]) <= $this->numberOfColumns)) {
                 foreach ($unmergedRow as $cellKey => $cell) {
                     // insert cell into row at cellKey position
-                    array_splice($rows[$unmergedRowKey], $cellKey, 0, array($cell));
+                    array_splice($rows[$unmergedRowKey], $cellKey, 0, [$cell]);
                 }
             } else {
                 $row = $this->copyRow($rows, $unmergedRowKey - 1);
@@ -617,7 +617,7 @@ private function fillNextRows(array $rows, int $line): array
                         $row[$column] = $unmergedRow[$column];
                     }
                 }
-                array_splice($rows, $unmergedRowKey, 0, array($row));
+                array_splice($rows, $unmergedRowKey, 0, [$row]);
             }
         }
 
@@ -629,7 +629,7 @@ private function fillNextRows(array $rows, int $line): array
      */
     private function fillCells($row)
     {
-        $newRow = array();
+        $newRow = [];
         foreach ($row as $column => $cell) {
             $newRow[] = $cell;
             if ($cell instanceof TableCell && $cell->getColspan() > 1) {
@@ -649,7 +649,7 @@ private function copyRow(array $rows, int $line): array
         foreach ($row as $cellKey => $cellValue) {
             $row[$cellKey] = '';
             if ($cellValue instanceof TableCell) {
-                $row[$cellKey] = new TableCell('', array('colspan' => $cellValue->getColspan()));
+                $row[$cellKey] = new TableCell('', ['colspan' => $cellValue->getColspan()]);
             }
         }
 
@@ -691,7 +691,7 @@ private function getRowColumns(array $row): array
     private function calculateColumnsWidth(iterable $rows)
     {
         for ($column = 0; $column < $this->numberOfColumns; ++$column) {
-            $lengths = array();
+            $lengths = [];
             foreach ($rows as $row) {
                 if ($row instanceof TableSeparator) {
                     continue;
@@ -742,7 +742,7 @@ private function getCellWidth(array $row, int $column): int
      */
     private function cleanup()
     {
-        $this->effectiveColumnWidths = array();
+        $this->effectiveColumnWidths = [];
         $this->numberOfColumns = null;
     }
 
@@ -783,14 +783,14 @@ private static function initStyles()
             ->setCrossingChars('┼', '╔', '╤', '╗', '╢', '╝', '╧', '╚', '╟', '╠', '╪', '╣')
         ;
 
-        return array(
+        return [
             'default' => new TableStyle(),
             'borderless' => $borderless,
             'compact' => $compact,
             'symfony-style-guide' => $styleGuide,
             'box' => $box,
             'box-double' => $boxDouble,
-        );
+        ];
     }
 
     private function resolveStyle($name)
diff --git a/src/Symfony/Component/Console/Tester/TesterTrait.php b/src/Symfony/Component/Console/Tester/TesterTrait.php
index b66972cae5f5..e5df56d8357c 100644
--- a/src/Symfony/Component/Console/Tester/TesterTrait.php
+++ b/src/Symfony/Component/Console/Tester/TesterTrait.php
@@ -23,7 +23,7 @@ trait TesterTrait
 {
     /** @var StreamOutput */
     private $output;
-    private $inputs = array();
+    private $inputs = [];
     private $captureStreamsIndependently = false;
 
     /**
diff --git a/src/Symfony/Component/Console/Tests/ApplicationTest.php b/src/Symfony/Component/Console/Tests/ApplicationTest.php
index b7b54f858ec2..2aaf9d7dae44 100644
--- a/src/Symfony/Component/Console/Tests/ApplicationTest.php
+++ b/src/Symfony/Component/Console/Tests/ApplicationTest.php
@@ -84,7 +84,7 @@ public function testConstructor()
         $application = new Application('foo', 'bar');
         $this->assertEquals('foo', $application->getName(), '__construct() takes the application name as its first argument');
         $this->assertEquals('bar', $application->getVersion(), '__construct() takes the application version as its second argument');
-        $this->assertEquals(array('help', 'list'), array_keys($application->all()), '__construct() registered the help and list commands by default');
+        $this->assertEquals(['help', 'list'], array_keys($application->all()), '__construct() registered the help and list commands by default');
     }
 
     public function testSetGetName()
@@ -134,9 +134,9 @@ public function testAllWithCommandLoader()
         $commands = $application->all('foo');
         $this->assertCount(1, $commands, '->all() takes a namespace as its first argument');
 
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar1' => function () { return new \Foo1Command(); },
-        )));
+        ]));
         $commands = $application->all('foo');
         $this->assertCount(2, $commands, '->all() takes a namespace as its first argument');
         $this->assertInstanceOf(\FooCommand::class, $commands['foo:bar'], '->all() returns the registered commands');
@@ -158,9 +158,9 @@ public function testAdd()
         $this->assertEquals($foo, $commands['foo:bar'], '->add() registers a command');
 
         $application = new Application();
-        $application->addCommands(array($foo = new \FooCommand(), $foo1 = new \Foo1Command()));
+        $application->addCommands([$foo = new \FooCommand(), $foo1 = new \Foo1Command()]);
         $commands = $application->all();
-        $this->assertEquals(array($foo, $foo1), array($commands['foo:bar'], $commands['foo:bar1']), '->addCommands() registers an array of commands');
+        $this->assertEquals([$foo, $foo1], [$commands['foo:bar'], $commands['foo:bar1']], '->addCommands() registers an array of commands');
     }
 
     /**
@@ -206,9 +206,9 @@ public function testHasGetWithCommandLoader()
         $this->assertEquals($foo, $application->get('foo:bar'), '->get() returns a command by name');
         $this->assertEquals($foo, $application->get('afoobar'), '->get() returns a command by alias');
 
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar1' => function () { return new \Foo1Command(); },
-        )));
+        ]));
 
         $this->assertTrue($application->has('afoobar'), '->has() returns true if an instance is registered for an alias even with command loader');
         $this->assertEquals($foo, $application->get('foo:bar'), '->get() returns an instance by name even with command loader');
@@ -226,7 +226,7 @@ public function testSilentHelp()
         $application->setCatchExceptions(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('-h' => true, '-q' => true), array('decorated' => false));
+        $tester->run(['-h' => true, '-q' => true], ['decorated' => false]);
 
         $this->assertEmpty($tester->getDisplay(true));
     }
@@ -246,7 +246,7 @@ public function testGetNamespaces()
         $application = new Application();
         $application->add(new \FooCommand());
         $application->add(new \Foo1Command());
-        $this->assertEquals(array('foo'), $application->getNamespaces(), '->getNamespaces() returns an array of unique used namespaces');
+        $this->assertEquals(['foo'], $application->getNamespaces(), '->getNamespaces() returns an array of unique used namespaces');
     }
 
     public function testFindNamespace()
@@ -368,9 +368,9 @@ public function testFindCaseInsensitiveSuggestions()
     public function testFindWithCommandLoader()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array(
+        $application->setCommandLoader(new FactoryCommandLoader([
             'foo:bar' => $f = function () { return new \FooCommand(); },
-        )));
+        ]));
 
         $this->assertInstanceOf('FooCommand', $application->find('foo:bar'), '->find() returns a command if its name exists');
         $this->assertInstanceOf('Symfony\Component\Console\Command\HelpCommand', $application->find('h'), '->find() returns a command if its name exists');
@@ -401,23 +401,23 @@ public function testFindWithAmbiguousAbbreviations($abbreviation, $expectedExcep
 
     public function provideAmbiguousAbbreviations()
     {
-        return array(
-            array('f', 'Command "f" is not defined.'),
-            array(
+        return [
+            ['f', 'Command "f" is not defined.'],
+            [
                 'a',
                 "Command \"a\" is ambiguous.\nDid you mean one of these?\n".
                 "    afoobar  The foo:bar command\n".
                 "    afoobar1 The foo:bar1 command\n".
                 '    afoobar2 The foo1:bar command',
-            ),
-            array(
+            ],
+            [
                 'foo:b',
                 "Command \"foo:b\" is ambiguous.\nDid you mean one of these?\n".
                 "    foo:bar  The foo:bar command\n".
                 "    foo:bar1 The foo:bar1 command\n".
                 '    foo1:bar The foo1:bar command',
-            ),
-        );
+            ],
+        ];
     }
 
     public function testFindCommandEqualNamespace()
@@ -465,7 +465,7 @@ public function testDontRunAlternativeNamespaceName()
         $application->add(new \Foo1Command());
         $application->setAutoExit(false);
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foos:bar1'), array('decorated' => false));
+        $tester->run(['command' => 'foos:bar1'], ['decorated' => false]);
         $this->assertSame('
                                                           
   There are no commands defined in the "foos" namespace.  
@@ -483,8 +483,8 @@ public function testCanRunAlternativeCommandName()
         $application->add(new \FooWithoutAliasCommand());
         $application->setAutoExit(false);
         $tester = new ApplicationTester($application);
-        $tester->setInputs(array('y'));
-        $tester->run(array('command' => 'foos'), array('decorated' => false));
+        $tester->setInputs(['y']);
+        $tester->run(['command' => 'foos'], ['decorated' => false]);
         $display = trim($tester->getDisplay(true));
         $this->assertContains('Command "foos" is not defined', $display);
         $this->assertContains('Do you want to run "foo" instead?  (yes/no) [no]:', $display);
@@ -497,8 +497,8 @@ public function testDontRunAlternativeCommandName()
         $application->add(new \FooWithoutAliasCommand());
         $application->setAutoExit(false);
         $tester = new ApplicationTester($application);
-        $tester->setInputs(array('n'));
-        $exitCode = $tester->run(array('command' => 'foos'), array('decorated' => false));
+        $tester->setInputs(['n']);
+        $exitCode = $tester->run(['command' => 'foos'], ['decorated' => false]);
         $this->assertSame(1, $exitCode);
         $display = trim($tester->getDisplay(true));
         $this->assertContains('Command "foos" is not defined', $display);
@@ -507,10 +507,10 @@ public function testDontRunAlternativeCommandName()
 
     public function provideInvalidCommandNamesSingle()
     {
-        return array(
-            array('foo3:barr'),
-            array('fooo3:bar'),
-        );
+        return [
+            ['foo3:barr'],
+            ['fooo3:bar'],
+        ];
     }
 
     public function testFindAlternativeExceptionMessageMultiple()
@@ -568,7 +568,7 @@ public function testFindAlternativeCommands()
             $this->fail('->find() throws a CommandNotFoundException if command does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if command does not exist');
-            $this->assertSame(array(), $e->getAlternatives());
+            $this->assertSame([], $e->getAlternatives());
             $this->assertEquals(sprintf('Command "%s" is not defined.', $commandName), $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, without alternatives');
         }
 
@@ -579,7 +579,7 @@ public function testFindAlternativeCommands()
             $this->fail('->find() throws a CommandNotFoundException if command does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if command does not exist');
-            $this->assertSame(array('afoobar1', 'foo:bar1'), $e->getAlternatives());
+            $this->assertSame(['afoobar1', 'foo:bar1'], $e->getAlternatives());
             $this->assertRegExp(sprintf('/Command "%s" is not defined./', $commandName), $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternatives');
             $this->assertRegExp('/afoobar1/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternative : "afoobar1"');
             $this->assertRegExp('/foo:bar1/', $e->getMessage(), '->find() throws a CommandNotFoundException if command does not exist, with alternative : "foo:bar1"');
@@ -590,7 +590,7 @@ public function testFindAlternativeCommands()
     public function testFindAlternativeCommandsWithAnAlias()
     {
         $fooCommand = new \FooCommand();
-        $fooCommand->setAliases(array('foo2'));
+        $fooCommand->setAliases(['foo2']);
 
         $application = new Application();
         $application->add($fooCommand);
@@ -614,7 +614,7 @@ public function testFindAlternativeNamespace()
             $this->fail('->find() throws a CommandNotFoundException if namespace does not exist');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\Component\Console\Exception\CommandNotFoundException', $e, '->find() throws a CommandNotFoundException if namespace does not exist');
-            $this->assertSame(array(), $e->getAlternatives());
+            $this->assertSame([], $e->getAlternatives());
             $this->assertEquals('There are no commands defined in the "Unknown-namespace" namespace.', $e->getMessage(), '->find() throws a CommandNotFoundException if namespace does not exist, without alternatives');
         }
 
@@ -644,7 +644,7 @@ public function testFindAlternativesOutput()
         $application->add(new \Foo2Command());
         $application->add(new \Foo3Command());
 
-        $expectedAlternatives = array(
+        $expectedAlternatives = [
             'afoobar',
             'afoobar1',
             'afoobar2',
@@ -652,7 +652,7 @@ public function testFindAlternativesOutput()
             'foo3:bar',
             'foo:bar',
             'foo:bar1',
-        );
+        ];
 
         try {
             $application->find('foo');
@@ -667,10 +667,10 @@ public function testFindAlternativesOutput()
 
     public function testFindNamespaceDoesNotFailOnDeepSimilarNamespaces()
     {
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('getNamespaces'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['getNamespaces'])->getMock();
         $application->expects($this->once())
             ->method('getNamespaces')
-            ->will($this->returnValue(array('foo:sublong', 'bar:sub')));
+            ->will($this->returnValue(['foo:sublong', 'bar:sub']));
 
         $this->assertEquals('foo:sublong', $application->findNamespace('f:sub'));
     }
@@ -697,16 +697,16 @@ public function testSetCatchExceptions()
         $application->setCatchExceptions(true);
         $this->assertTrue($application->areExceptionsCaught());
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getDisplay(true), '->setCatchExceptions() sets the catch exception flag');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getErrorOutput(true), '->setCatchExceptions() sets the catch exception flag');
         $this->assertSame('', $tester->getDisplay(true));
 
         $application->setCatchExceptions(false);
         try {
-            $tester->run(array('command' => 'foo'), array('decorated' => false));
+            $tester->run(['command' => 'foo'], ['decorated' => false]);
             $this->fail('->setCatchExceptions() sets the catch exception flag');
         } catch (\Exception $e) {
             $this->assertInstanceOf('\Exception', $e, '->setCatchExceptions() sets the catch exception flag');
@@ -730,29 +730,29 @@ public function testRenderException()
         putenv('COLUMNS=120');
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception1.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exception');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE, 'capture_stderr_separately' => true]);
         $this->assertContains('Exception trace', $tester->getErrorOutput(), '->renderException() renders a pretty exception with a stack trace when verbosity is verbose');
 
-        $tester->run(array('command' => 'list', '--foo' => true), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'list', '--foo' => true], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception2.txt', $tester->getErrorOutput(true), '->renderException() renders the command synopsis when an exception occurs in the context of a command');
 
         $application->add(new \Foo3Command());
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => false, 'verbosity' => Output::VERBOSITY_VERBOSE]);
         $this->assertRegExp('/\[Exception\]\s*First exception/', $tester->getDisplay(), '->renderException() renders a pretty exception without code exception when code exception is default and verbosity is verbose');
         $this->assertRegExp('/\[Exception\]\s*Second exception/', $tester->getDisplay(), '->renderException() renders a pretty exception without code exception when code exception is 0 and verbosity is verbose');
         $this->assertRegExp('/\[Exception \(404\)\]\s*Third exception/', $tester->getDisplay(), '->renderException() renders a pretty exception with code exception when code exception is 404 and verbosity is verbose');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3decorated.txt', $tester->getDisplay(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo3:bar'), array('decorated' => true, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo3:bar'], ['decorated' => true, 'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception3decorated.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
         $application = new Application();
@@ -760,7 +760,7 @@ public function testRenderException()
         putenv('COLUMNS=32');
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false,  'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false,  'capture_stderr_separately' => true]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception4.txt', $tester->getErrorOutput(true), '->renderException() wraps messages when they are bigger than the terminal');
         putenv('COLUMNS=120');
     }
@@ -775,10 +775,10 @@ public function testRenderExceptionWithDoubleWidthCharacters()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth1.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
-        $tester->run(array('command' => 'foo'), array('decorated' => true, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => true, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth1decorated.txt', $tester->getErrorOutput(true), '->renderException() renders a pretty exceptions with previous exceptions');
 
         $application = new Application();
@@ -788,7 +788,7 @@ public function testRenderExceptionWithDoubleWidthCharacters()
             throw new \Exception('コマンドの実行中にエラーが発生しました。');
         });
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'), array('decorated' => false, 'capture_stderr_separately' => true));
+        $tester->run(['command' => 'foo'], ['decorated' => false, 'capture_stderr_separately' => true]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_doublewidth2.txt', $tester->getErrorOutput(true), '->renderException() wraps messages when they are bigger than the terminal');
         putenv('COLUMNS=120');
     }
@@ -803,14 +803,14 @@ public function testRenderExceptionEscapesLines()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_escapeslines.txt', $tester->getDisplay(true), '->renderException() escapes lines containing formatting');
         putenv('COLUMNS=120');
     }
 
     public function testRenderExceptionLineBreaks()
     {
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('getTerminalWidth'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['getTerminalWidth'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->any())
             ->method('getTerminalWidth')
@@ -820,7 +820,7 @@ public function testRenderExceptionLineBreaks()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertStringMatchesFormatFile(self::$fixturesPath.'/application_renderexception_linebreaks.txt', $tester->getDisplay(true), '->renderException() keep multiple line breaks');
     }
 
@@ -834,7 +834,7 @@ public function testRenderAnonymousException()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertContains('[InvalidArgumentException@anonymous]', $tester->getDisplay(true));
 
         $application = new Application();
@@ -845,7 +845,7 @@ public function testRenderAnonymousException()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertContains('Dummy type "@anonymous" is invalid.', $tester->getDisplay(true));
     }
 
@@ -859,7 +859,7 @@ public function testRenderExceptionStackTraceContainsRootException()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertContains('[InvalidArgumentException@anonymous]', $tester->getDisplay(true));
 
         $application = new Application();
@@ -870,7 +870,7 @@ public function testRenderExceptionStackTraceContainsRootException()
         });
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $tester->run(['command' => 'foo'], ['decorated' => false]);
         $this->assertContains('Dummy type "@anonymous" is invalid.', $tester->getDisplay(true));
     }
 
@@ -880,7 +880,7 @@ public function testRun()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
         $application->add($command = new \Foo1Command());
-        $_SERVER['argv'] = array('cli.php', 'foo:bar1');
+        $_SERVER['argv'] = ['cli.php', 'foo:bar1'];
 
         ob_start();
         $application->run();
@@ -896,63 +896,63 @@ public function testRun()
         $this->ensureStaticCommandHelp($application);
         $tester = new ApplicationTester($application);
 
-        $tester->run(array(), array('decorated' => false));
+        $tester->run([], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run1.txt', $tester->getDisplay(true), '->run() runs the list command if no argument is passed');
 
-        $tester->run(array('--help' => true), array('decorated' => false));
+        $tester->run(['--help' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run2.txt', $tester->getDisplay(true), '->run() runs the help command if --help is passed');
 
-        $tester->run(array('-h' => true), array('decorated' => false));
+        $tester->run(['-h' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run2.txt', $tester->getDisplay(true), '->run() runs the help command if -h is passed');
 
-        $tester->run(array('command' => 'list', '--help' => true), array('decorated' => false));
+        $tester->run(['command' => 'list', '--help' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run3.txt', $tester->getDisplay(true), '->run() displays the help if --help is passed');
 
-        $tester->run(array('command' => 'list', '-h' => true), array('decorated' => false));
+        $tester->run(['command' => 'list', '-h' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run3.txt', $tester->getDisplay(true), '->run() displays the help if -h is passed');
 
-        $tester->run(array('--ansi' => true));
+        $tester->run(['--ansi' => true]);
         $this->assertTrue($tester->getOutput()->isDecorated(), '->run() forces color output if --ansi is passed');
 
-        $tester->run(array('--no-ansi' => true));
+        $tester->run(['--no-ansi' => true]);
         $this->assertFalse($tester->getOutput()->isDecorated(), '->run() forces color output to be disabled if --no-ansi is passed');
 
-        $tester->run(array('--version' => true), array('decorated' => false));
+        $tester->run(['--version' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run4.txt', $tester->getDisplay(true), '->run() displays the program version if --version is passed');
 
-        $tester->run(array('-V' => true), array('decorated' => false));
+        $tester->run(['-V' => true], ['decorated' => false]);
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_run4.txt', $tester->getDisplay(true), '->run() displays the program version if -v is passed');
 
-        $tester->run(array('command' => 'list', '--quiet' => true));
+        $tester->run(['command' => 'list', '--quiet' => true]);
         $this->assertSame('', $tester->getDisplay(), '->run() removes all output if --quiet is passed');
         $this->assertFalse($tester->getInput()->isInteractive(), '->run() sets off the interactive mode if --quiet is passed');
 
-        $tester->run(array('command' => 'list', '-q' => true));
+        $tester->run(['command' => 'list', '-q' => true]);
         $this->assertSame('', $tester->getDisplay(), '->run() removes all output if -q is passed');
         $this->assertFalse($tester->getInput()->isInteractive(), '->run() sets off the interactive mode if -q is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => true));
+        $tester->run(['command' => 'list', '--verbose' => true]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if --verbose is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 1));
+        $tester->run(['command' => 'list', '--verbose' => 1]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if --verbose=1 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 2));
+        $tester->run(['command' => 'list', '--verbose' => 2]);
         $this->assertSame(Output::VERBOSITY_VERY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to very verbose if --verbose=2 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 3));
+        $tester->run(['command' => 'list', '--verbose' => 3]);
         $this->assertSame(Output::VERBOSITY_DEBUG, $tester->getOutput()->getVerbosity(), '->run() sets the output to debug if --verbose=3 is passed');
 
-        $tester->run(array('command' => 'list', '--verbose' => 4));
+        $tester->run(['command' => 'list', '--verbose' => 4]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if unknown --verbose level is passed');
 
-        $tester->run(array('command' => 'list', '-v' => true));
+        $tester->run(['command' => 'list', '-v' => true]);
         $this->assertSame(Output::VERBOSITY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
-        $tester->run(array('command' => 'list', '-vv' => true));
+        $tester->run(['command' => 'list', '-vv' => true]);
         $this->assertSame(Output::VERBOSITY_VERY_VERBOSE, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
-        $tester->run(array('command' => 'list', '-vvv' => true));
+        $tester->run(['command' => 'list', '-vvv' => true]);
         $this->assertSame(Output::VERBOSITY_DEBUG, $tester->getOutput()->getVerbosity(), '->run() sets the output to verbose if -v is passed');
 
         $application = new Application();
@@ -961,10 +961,10 @@ public function testRun()
         $application->add(new \FooCommand());
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'foo:bar', '--no-interaction' => true), array('decorated' => false));
+        $tester->run(['command' => 'foo:bar', '--no-interaction' => true], ['decorated' => false]);
         $this->assertSame('called'.PHP_EOL, $tester->getDisplay(), '->run() does not call interact() if --no-interaction is passed');
 
-        $tester->run(array('command' => 'foo:bar', '-n' => true), array('decorated' => false));
+        $tester->run(['command' => 'foo:bar', '-n' => true], ['decorated' => false]);
         $this->assertSame('called'.PHP_EOL, $tester->getDisplay(), '->run() does not call interact() if -n is passed');
     }
 
@@ -984,12 +984,12 @@ public function testVerboseValueNotBreakArguments()
 
         $output = new StreamOutput(fopen('php://memory', 'w', false));
 
-        $input = new ArgvInput(array('cli.php', '-v', 'foo:bar'));
+        $input = new ArgvInput(['cli.php', '-v', 'foo:bar']);
         $application->run($input, $output);
 
         $this->addToAssertionCount(1);
 
-        $input = new ArgvInput(array('cli.php', '--verbose', 'foo:bar'));
+        $input = new ArgvInput(['cli.php', '--verbose', 'foo:bar']);
         $application->run($input, $output);
 
         $this->addToAssertionCount(1);
@@ -999,13 +999,13 @@ public function testRunReturnsIntegerExitCode()
     {
         $exception = new \Exception('', 4);
 
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('doRun'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['doRun'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->once())
             ->method('doRun')
             ->willThrowException($exception);
 
-        $exitCode = $application->run(new ArrayInput(array()), new NullOutput());
+        $exitCode = $application->run(new ArrayInput([]), new NullOutput());
 
         $this->assertSame(4, $exitCode, '->run() returns integer exit code extracted from raised exception');
     }
@@ -1029,7 +1029,7 @@ public function testRunDispatchesIntegerExitCode()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'test'));
+        $tester->run(['command' => 'test']);
 
         $this->assertTrue($passedRightValue, '-> exit code 4 was passed in the console.terminate event');
     }
@@ -1038,13 +1038,13 @@ public function testRunReturnsExitCodeOneForExceptionCodeZero()
     {
         $exception = new \Exception('', 0);
 
-        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('doRun'))->getMock();
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(['doRun'])->getMock();
         $application->setAutoExit(false);
         $application->expects($this->once())
             ->method('doRun')
             ->willThrowException($exception);
 
-        $exitCode = $application->run(new ArrayInput(array()), new NullOutput());
+        $exitCode = $application->run(new ArrayInput([]), new NullOutput());
 
         $this->assertSame(1, $exitCode, '->run() returns exit code 1 when exception code is 0');
     }
@@ -1068,7 +1068,7 @@ public function testRunDispatchesExitCodeOneForExceptionCodeZero()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'test'));
+        $tester->run(['command' => 'test']);
 
         $this->assertTrue($passedRightValue, '-> exit code 1 was passed in the console.terminate event');
     }
@@ -1089,12 +1089,12 @@ public function testAddingOptionWithDuplicateShortcut()
 
         $application
             ->register('foo')
-            ->setAliases(array('f'))
-            ->setDefinition(array(new InputOption('survey', 'e', InputOption::VALUE_REQUIRED, 'My option with a shortcut.')))
+            ->setAliases(['f'])
+            ->setDefinition([new InputOption('survey', 'e', InputOption::VALUE_REQUIRED, 'My option with a shortcut.')])
             ->setCode(function (InputInterface $input, OutputInterface $output) {})
         ;
 
-        $input = new ArrayInput(array('command' => 'foo'));
+        $input = new ArrayInput(['command' => 'foo']);
         $output = new NullOutput();
 
         $application->run($input, $output);
@@ -1111,22 +1111,22 @@ public function testAddingAlreadySetDefinitionElementData($def)
         $application->setCatchExceptions(false);
         $application
             ->register('foo')
-            ->setDefinition(array($def))
+            ->setDefinition([$def])
             ->setCode(function (InputInterface $input, OutputInterface $output) {})
         ;
 
-        $input = new ArrayInput(array('command' => 'foo'));
+        $input = new ArrayInput(['command' => 'foo']);
         $output = new NullOutput();
         $application->run($input, $output);
     }
 
     public function getAddingAlreadySetDefinitionElementData()
     {
-        return array(
-            array(new InputArgument('command', InputArgument::REQUIRED)),
-            array(new InputOption('quiet', '', InputOption::VALUE_NONE)),
-            array(new InputOption('query', 'q', InputOption::VALUE_NONE)),
-        );
+        return [
+            [new InputArgument('command', InputArgument::REQUIRED)],
+            [new InputOption('quiet', '', InputOption::VALUE_NONE)],
+            [new InputOption('query', 'q', InputOption::VALUE_NONE)],
+        ];
     }
 
     public function testGetDefaultHelperSetReturnsDefaultValues()
@@ -1146,7 +1146,7 @@ public function testAddingSingleHelperSetOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $application->setHelperSet(new HelperSet([new FormatterHelper()]));
 
         $helperSet = $application->getHelperSet();
 
@@ -1163,7 +1163,7 @@ public function testOverwritingDefaultHelperSetOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setHelperSet(new HelperSet(array(new FormatterHelper())));
+        $application->setHelperSet(new HelperSet([new FormatterHelper()]));
 
         $helperSet = $application->getHelperSet();
 
@@ -1221,7 +1221,7 @@ public function testSettingCustomInputDefinitionOverwritesDefaultValues()
         $application->setAutoExit(false);
         $application->setCatchExceptions(false);
 
-        $application->setDefinition(new InputDefinition(array(new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.'))));
+        $application->setDefinition(new InputDefinition([new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')]));
 
         $inputDefinition = $application->getDefinition();
 
@@ -1250,7 +1250,7 @@ public function testRunWithDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertEquals('before.foo.after.'.PHP_EOL, $tester->getDisplay());
     }
 
@@ -1270,7 +1270,7 @@ public function testRunWithExceptionAndDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
     }
 
     public function testRunDispatchesAllEventsWithException()
@@ -1286,7 +1286,7 @@ public function testRunDispatchesAllEventsWithException()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.foo.error.after.', $tester->getDisplay());
     }
 
@@ -1306,7 +1306,7 @@ public function testRunDispatchesAllEventsWithExceptionInListener()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.error.after.', $tester->getDisplay());
     }
 
@@ -1325,7 +1325,7 @@ public function testRunWithError()
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('Error expected.');
         } catch (\Error $e) {
             $this->assertSame('dymerr', $e->getMessage());
@@ -1354,7 +1354,7 @@ public function testRunAllowsErrorListenersToSilenceTheException()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
         $this->assertContains('before.error.silenced.after.', $tester->getDisplay());
         $this->assertEquals(ConsoleCommandEvent::RETURN_CODE_DISABLED, $tester->getStatusCode());
     }
@@ -1373,7 +1373,7 @@ public function testConsoleErrorEventIsTriggeredOnCommandNotFound()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'unknown'));
+        $tester->run(['command' => 'unknown']);
         $this->assertContains('silenced command not found', $tester->getDisplay());
         $this->assertEquals(1, $tester->getStatusCode());
     }
@@ -1392,7 +1392,7 @@ public function testErrorIsRethrownIfNotHandledByConsoleErrorEvent()
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('->run() should rethrow PHP errors if not handled via ConsoleErrorEvent.');
         } catch (\Error $e) {
             $this->assertSame($e->getMessage(), 'Class \'UnknownClass\' not found');
@@ -1417,7 +1417,7 @@ public function testRunWithErrorAndDispatcher()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dym'));
+        $tester->run(['command' => 'dym']);
         $this->assertContains('before.dym.error.after.', $tester->getDisplay(), 'The PHP Error did not dispached events');
     }
 
@@ -1434,7 +1434,7 @@ public function testRunDispatchesAllEventsWithError()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dym'));
+        $tester->run(['command' => 'dym']);
         $this->assertContains('before.dym.error.after.', $tester->getDisplay(), 'The PHP Error did not dispached events');
     }
 
@@ -1451,7 +1451,7 @@ public function testRunWithErrorFailingStatusCode()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'dus'));
+        $tester->run(['command' => 'dus']);
         $this->assertSame(1, $tester->getStatusCode(), 'Status code should be 1');
     }
 
@@ -1466,7 +1466,7 @@ public function testRunWithDispatcherSkippingCommand()
         });
 
         $tester = new ApplicationTester($application);
-        $exitCode = $tester->run(array('command' => 'foo'));
+        $exitCode = $tester->run(['command' => 'foo']);
         $this->assertContains('before.after.', $tester->getDisplay());
         $this->assertEquals(ConsoleCommandEvent::RETURN_CODE_DISABLED, $exitCode);
     }
@@ -1493,7 +1493,7 @@ public function testRunWithDispatcherAccessingInputOptions()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo', '--no-interaction' => true));
+        $tester->run(['command' => 'foo', '--no-interaction' => true]);
 
         $this->assertTrue($noInteractionValue);
         $this->assertFalse($quietValue);
@@ -1523,7 +1523,7 @@ public function testRunWithDispatcherAddingInputOptions()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo', '--extra' => 'some test value'));
+        $tester->run(['command' => 'foo', '--extra' => 'some test value']);
 
         $this->assertEquals('some test value', $extraValue);
     }
@@ -1538,14 +1538,14 @@ public function testSetRunCustomDefaultCommand()
         $application->setDefaultCommand($command->getName());
 
         $tester = new ApplicationTester($application);
-        $tester->run(array(), array('interactive' => false));
+        $tester->run([], ['interactive' => false]);
         $this->assertEquals('called'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
 
         $application = new CustomDefaultCommandApplication();
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array(), array('interactive' => false));
+        $tester->run([], ['interactive' => false]);
 
         $this->assertEquals('called'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
     }
@@ -1560,7 +1560,7 @@ public function testSetRunCustomDefaultCommandWithOption()
         $application->setDefaultCommand($command->getName());
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('--fooopt' => 'opt'), array('interactive' => false));
+        $tester->run(['--fooopt' => 'opt'], ['interactive' => false]);
 
         $this->assertEquals('called'.PHP_EOL.'opt'.PHP_EOL, $tester->getDisplay(), 'Application runs the default set command if different from \'list\' command');
     }
@@ -1576,10 +1576,10 @@ public function testSetRunCustomSingleCommand()
 
         $tester = new ApplicationTester($application);
 
-        $tester->run(array());
+        $tester->run([]);
         $this->assertContains('called', $tester->getDisplay());
 
-        $tester->run(array('--help' => true));
+        $tester->run(['--help' => true]);
         $this->assertContains('The foo:bar command', $tester->getDisplay());
     }
 
@@ -1592,9 +1592,9 @@ public function testCanCheckIfTerminalIsInteractive()
         $application->setAutoExit(false);
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'help'));
+        $tester->run(['command' => 'help']);
 
-        $this->assertFalse($tester->getInput()->hasParameterOption(array('--no-interaction', '-n')));
+        $this->assertFalse($tester->getInput()->hasParameterOption(['--no-interaction', '-n']));
 
         $inputStream = $tester->getInput()->getStream();
         $this->assertEquals($tester->getInput()->isInteractive(), @posix_isatty($inputStream));
@@ -1606,9 +1606,9 @@ public function testRunLazyCommandService()
         $container->addCompilerPass(new AddConsoleCommandPass());
         $container
             ->register('lazy-command', LazyCommand::class)
-            ->addTag('console.command', array('command' => 'lazy:command'))
-            ->addTag('console.command', array('command' => 'lazy:alias'))
-            ->addTag('console.command', array('command' => 'lazy:alias2'));
+            ->addTag('console.command', ['command' => 'lazy:command'])
+            ->addTag('console.command', ['command' => 'lazy:alias'])
+            ->addTag('console.command', ['command' => 'lazy:alias2']);
         $container->compile();
 
         $application = new Application();
@@ -1617,17 +1617,17 @@ public function testRunLazyCommandService()
 
         $tester = new ApplicationTester($application);
 
-        $tester->run(array('command' => 'lazy:command'));
+        $tester->run(['command' => 'lazy:command']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
-        $tester->run(array('command' => 'lazy:alias'));
+        $tester->run(['command' => 'lazy:alias']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
-        $tester->run(array('command' => 'lazy:alias2'));
+        $tester->run(['command' => 'lazy:alias2']);
         $this->assertSame("lazy-command called\n", $tester->getDisplay(true));
 
         $command = $application->get('lazy:command');
-        $this->assertSame(array('lazy:alias', 'lazy:alias2'), $command->getAliases());
+        $this->assertSame(['lazy:alias', 'lazy:alias2'], $command->getAliases());
     }
 
     /**
@@ -1636,21 +1636,21 @@ public function testRunLazyCommandService()
     public function testGetDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $application->get('disabled');
     }
 
     public function testHasReturnsFalseForDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $this->assertFalse($application->has('disabled'));
     }
 
     public function testAllExcludesDisabledLazyCommand()
     {
         $application = new Application();
-        $application->setCommandLoader(new FactoryCommandLoader(array('disabled' => function () { return new DisabledCommand(); })));
+        $application->setCommandLoader(new FactoryCommandLoader(['disabled' => function () { return new DisabledCommand(); }]));
         $this->assertArrayNotHasKey('disabled', $application->all());
     }
 
@@ -1693,7 +1693,7 @@ public function testErrorIsRethrownIfNotHandledByConsoleErrorEventWithCatchingEn
         $tester = new ApplicationTester($application);
 
         try {
-            $tester->run(array('command' => 'dym'));
+            $tester->run(['command' => 'dym']);
             $this->fail('->run() should rethrow PHP errors if not handled via ConsoleErrorEvent.');
         } catch (\Error $e) {
             $this->assertSame($e->getMessage(), 'Class \'UnknownClass\' not found');
@@ -1725,7 +1725,7 @@ public function testThrowingErrorListener()
         });
 
         $tester = new ApplicationTester($application);
-        $tester->run(array('command' => 'foo'));
+        $tester->run(['command' => 'foo']);
     }
 
     protected function tearDown()
@@ -1745,7 +1745,7 @@ class CustomApplication extends Application
      */
     protected function getDefaultInputDefinition()
     {
-        return new InputDefinition(array(new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')));
+        return new InputDefinition([new InputOption('--custom', '-c', InputOption::VALUE_NONE, 'Set the custom input definition.')]);
     }
 
     /**
@@ -1755,7 +1755,7 @@ protected function getDefaultInputDefinition()
      */
     protected function getDefaultHelperSet()
     {
-        return new HelperSet(array(new FormatterHelper()));
+        return new HelperSet([new FormatterHelper()]);
     }
 }
 
diff --git a/src/Symfony/Component/Console/Tests/Helper/ProcessHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/ProcessHelperTest.php
index 829bc4330744..5387a9e3c2ed 100644
--- a/src/Symfony/Component/Console/Tests/Helper/ProcessHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/ProcessHelperTest.php
@@ -30,7 +30,7 @@ public function testVariousProcessRuns($expected, $cmd, $verbosity, $error)
         }
 
         $helper = new ProcessHelper();
-        $helper->setHelperSet(new HelperSet(array(new DebugFormatterHelper())));
+        $helper->setHelperSet(new HelperSet([new DebugFormatterHelper()]));
         $output = $this->getOutputStream($verbosity);
         $helper->run($output, $cmd, $error);
         $this->assertEquals($expected, $this->getOutput($output));
@@ -39,13 +39,13 @@ public function testVariousProcessRuns($expected, $cmd, $verbosity, $error)
     public function testPassedCallbackIsExecuted()
     {
         $helper = new ProcessHelper();
-        $helper->setHelperSet(new HelperSet(array(new DebugFormatterHelper())));
+        $helper->setHelperSet(new HelperSet([new DebugFormatterHelper()]));
         $output = $this->getOutputStream(StreamOutput::VERBOSITY_NORMAL);
 
         $executed = false;
         $callback = function () use (&$executed) { $executed = true; };
 
-        $helper->run($output, array('php', '-r', 'echo 42;'), null, $callback);
+        $helper->run($output, ['php', '-r', 'echo 42;'], null, $callback);
         $this->assertTrue($executed);
     }
 
@@ -96,27 +96,27 @@ public function provideCommandsAndOutput()
 EOT;
 
         $errorMessage = 'An error occurred';
-        $args = new Process(array('php', '-r', 'echo 42;'));
+        $args = new Process(['php', '-r', 'echo 42;']);
         $args = $args->getCommandLine();
         $successOutputProcessDebug = str_replace("'php' '-r' 'echo 42;'", $args, $successOutputProcessDebug);
-        $fromShellCommandline = \method_exists(Process::class, 'fromShellCommandline') ? array(Process::class, 'fromShellCommandline') : function ($cmd) { return new Process($cmd); };
-
-        return array(
-            array('', 'php -r "echo 42;"', StreamOutput::VERBOSITY_VERBOSE, null),
-            array($successOutputVerbose, 'php -r "echo 42;"', StreamOutput::VERBOSITY_VERY_VERBOSE, null),
-            array($successOutputDebug, 'php -r "echo 42;"', StreamOutput::VERBOSITY_DEBUG, null),
-            array($successOutputDebugWithTags, 'php -r "echo \'<info>42</info>\';"', StreamOutput::VERBOSITY_DEBUG, null),
-            array('', 'php -r "syntax error"', StreamOutput::VERBOSITY_VERBOSE, null),
-            array($syntaxErrorOutputVerbose, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERY_VERBOSE, null),
-            array($syntaxErrorOutputDebug, 'php -r 
10000
"fwrite(STDERR, \'error message\');usleep(500000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_DEBUG, null),
-            array($errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERBOSE, $errorMessage),
-            array($syntaxErrorOutputVerbose.$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERY_VERBOSE, $errorMessage),
-            array($syntaxErrorOutputDebug.$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(500000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_DEBUG, $errorMessage),
-            array($successOutputProcessDebug, array('php', '-r', 'echo 42;'), StreamOutput::VERBOSITY_DEBUG, null),
-            array($successOutputDebug, $fromShellCommandline('php -r "echo 42;"'), StreamOutput::VERBOSITY_DEBUG, null),
-            array($successOutputProcessDebug, array(new Process(array('php', '-r', 'echo 42;'))), StreamOutput::VERBOSITY_DEBUG, null),
-            array($successOutputPhp, array($fromShellCommandline('php -r '.$PHP), 'PHP' => 'echo 42;'), StreamOutput::VERBOSITY_DEBUG, null),
-        );
+        $fromShellCommandline = \method_exists(Process::class, 'fromShellCommandline') ? [Process::class, 'fromShellCommandline'] : function ($cmd) { return new Process($cmd); };
+
+        return [
+            ['', 'php -r "echo 42;"', StreamOutput::VERBOSITY_VERBOSE, null],
+            [$successOutputVerbose, 'php -r "echo 42;"', StreamOutput::VERBOSITY_VERY_VERBOSE, null],
+            [$successOutputDebug, 'php -r "echo 42;"', StreamOutput::VERBOSITY_DEBUG, null],
+            [$successOutputDebugWithTags, 'php -r "echo \'<info>42</info>\';"', StreamOutput::VERBOSITY_DEBUG, null],
+            ['', 'php -r "syntax error"', StreamOutput::VERBOSITY_VERBOSE, null],
+            [$syntaxErrorOutputVerbose, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERY_VERBOSE, null],
+            [$syntaxErrorOutputDebug, 'php -r "fwrite(STDERR, \'error message\');usleep(500000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_DEBUG, null],
+            [$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERBOSE, $errorMessage],
+            [$syntaxErrorOutputVerbose.$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(50000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_VERY_VERBOSE, $errorMessage],
+            [$syntaxErrorOutputDebug.$errorMessage.PHP_EOL, 'php -r "fwrite(STDERR, \'error message\');usleep(500000);fwrite(STDOUT, \'out message\');exit(252);"', StreamOutput::VERBOSITY_DEBUG, $errorMessage],
+            [$successOutputProcessDebug, ['php', '-r', 'echo 42;'], StreamOutput::VERBOSITY_DEBUG, null],
+            [$successOutputDebug, $fromShellCommandline('php -r "echo 42;"'), StreamOutput::VERBOSITY_DEBUG, null],
+            [$successOutputProcessDebug, [new Process(['php', '-r', 'echo 42;'])], StreamOutput::VERBOSITY_DEBUG, null],
+            [$successOutputPhp, [$fromShellCommandline('php -r '.$PHP), 'PHP' => 'echo 42;'], StreamOutput::VERBOSITY_DEBUG, null],
+        ];
     }
 
     private function getOutputStream($verbosity)
diff --git a/src/Symfony/Component/Console/Tests/Helper/TableTest.php b/src/Symfony/Component/Console/Tests/Helper/TableTest.php
index a74fe5ea6ffb..43b90fd073c9 100644
--- a/src/Symfony/Component/Console/Tests/Helper/TableTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/TableTest.php
@@ -982,13 +982,13 @@ public function testSetTitle($headerTitle, $footerTitle, $style, $expected)
         (new Table($output = $this->getOutputStream()))
             ->setHeaderTitle($headerTitle)
             ->setFooterTitle($footerTitle)
-            ->setHeaders(array('ISBN', 'Title', 'Author'))
-            ->setRows(array(
-                array('99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'),
-                array('9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'),
-                array('960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'),
-                array('80-902734-1-6', 'And Then There Were None', 'Agatha Christie'),
-            ))
+            ->setHeaders(['ISBN', 'Title', 'Author'])
+            ->setRows([
+                ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
+                ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'],
+                ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
+                ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
+            ])
             ->setStyle($style)
             ->render()
         ;
@@ -998,8 +998,8 @@ public function testSetTitle($headerTitle, $footerTitle, $style, $expected)
 
     public function renderSetTitle()
     {
-        return array(
-            array(
+        return [
+            [
                 'Books',
                 'Page 1/2',
                 'default',
@@ -1014,8 +1014,8 @@ public function renderSetTitle()
 +---------------+--------- Page 1/2 -------+------------------+
 
 TABLE
-            ),
-            array(
+            ],
+            [
                 'Books',
                 'Page 1/2',
                 'box',
@@ -1030,8 +1030,8 @@ public function renderSetTitle()
 └───────────────┴───────── Page 1/2 ───────┴──────────────────┘
 
 TABLE
-            ),
-            array(
+            ],
+            [
                 'Boooooooooooooooooooooooooooooooooooooooooooooooooooooooks',
                 'Page 1/999999999999999999999999999999999999999999999999999',
                 'default',
@@ -1046,17 +1046,17 @@ public function renderSetTitle()
 +- Page 1/99999999999999999999999999999999999999999999999... -+
 
 TABLE
-            ),
-        );
+            ],
+        ];
     }
 
     public function testColumnMaxWidths()
     {
         $table = new Table($output = $this->getOutputStream());
         $table
-            ->setRows(array(
-                array('Divine Comedy', 'A Tale of Two Cities', 'The Lord of the Rings', 'And Then There Were None'),
-            ))
+            ->setRows([
+                ['Divine Comedy', 'A Tale of Two Cities', 'The Lord of the Rings', 'And Then There Were None'],
+            ])
             ->setColumnMaxWidth(1, 5)
             ->setColumnMaxWidth(2, 10)
             ->setColumnMaxWidth(3, 15);
diff --git a/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php b/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
index 53fbaf855ff2..7522731535b0 100644
--- a/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
+++ b/src/Symfony/Component/Console/Tests/Tester/ApplicationTesterTest.php
@@ -104,8 +104,8 @@ public function testErrorOutput()
 
         $tester = new ApplicationTester($application);
         $tester->run(
-            array('command' => 'foo', 'foo' => 'bar'),
-            array('capture_stderr_separately' => true)
+            ['command' => 'foo', 'foo' => 'bar'],
+            ['capture_stderr_separately' => true]
         );
 
         $this->assertSame('foo', $tester->getErrorOutput());
diff --git a/src/Symfony/Component/Console/Tests/Tester/CommandTesterTest.php b/src/Symfony/Component/Console/Tests/Tester/CommandTesterTest.php
index 4a0e8afbc8b8..6d9b7417d679 100644
--- a/src/Symfony/Component/Console/Tests/Tester/CommandTesterTest.php
+++ b/src/Symfony/Component/Console/Tests/Tester/CommandTesterTest.php
@@ -198,8 +198,8 @@ public function testErrorOutput()
 
         $tester = new CommandTester($command);
         $tester->execute(
-            array('foo' => 'bar'),
-            array('capture_stderr_separately' => true)
+            ['foo' => 'bar'],
+            ['capture_stderr_separately' => true]
         );
 
         $this->assertSame('foo', $tester->getErrorOutput());
diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index 8b5e5420761a..027c9a477597 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -29,16 +29,16 @@ class DebugClassLoader
 {
     private $classLoader;
     private $isFinder;
-    private $loaded = array();
+    private $loaded = [];
     private static $caseCheck;
-    private static $checkedClasses = array();
-    private static $final = array();
-    private static $finalMethods = array();
-    private static $deprecated = array();
-    private static $internal = array();
-    private static $internalMethods = array();
-    private static $annotatedParameters = array();
-    private static $darwinCache = array('/' => array('/', array()));
+    private static $checkedClasses = [];
+    private static $final = [];
+    private static $finalMethods = [];
+    private static $deprecated = [];
+    private static $internal = [];
+    private static $internalMethods = [];
+    private static $annotatedParameters = [];
+    private static $darwinCache = ['/' => ['/', []]];
 
     public function __construct(callable $classLoader)
     {
@@ -98,7 +98,7 @@ class_exists('Psr\Log\LogLevel');
 
         foreach ($functions as $function) {
             if (!\is_array($function) || !$function[0] instanceof self) {
-                $function = array(new static($function), 'loadClass');
+                $function = [new static($function), 'loadClass'];
             }
 
             spl_autoload_register($function);
@@ -219,7 +219,7 @@ private function checkClass($class, $file = null)
 
     public function checkAnnotations(\ReflectionClass $refl, $class)
     {
-        $deprecations = array();
+        $deprecations = [];
 
         // Don't trigger deprecations for classes in the same vendor
         if (2 > $len = 1 + (\strpos($class, '\\') ?: \strpos($class, '_'))) {
@@ -231,7 +231,7 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
 
         // Detect annotations on the class
         if (false !== $doc = $refl->getDocComment()) {
-            foreach (array('final', 'deprecated', 'internal') as $annotation) {
+            foreach (['final', 'deprecated', 'internal'] as $annotation) {
                 if (false !== \strpos($doc, $annotation) && preg_match('#\n \* @'.$annotation.'(?:( .+?)\.?)?\r?\n \*(?: @|/$)#s', $doc, $notice)) {
                     self::${$annotation}[$class] = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
                 }
@@ -273,11 +273,11 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
         }
 
         // Inherit @final, @internal and @param annotations for methods
-        self::$finalMethods[$class] = array();
-        self::$internalMethods[$class] = array();
-        self::$annotatedParameters[$class] = array();
+        self::$finalMethods[$class] = [];
+        self::$internalMethods[$class] = [];
+        self::$annotatedParameters[$class] = [];
         foreach ($parentAndOwnInterfaces as $use) {
-            foreach (array('finalMethods', 'internalMethods', 'annotatedParameters') as $property) {
+            foreach (['finalMethods', 'internalMethods', 'annotatedParameters'] as $property) {
                 if (isset(self::${$property}[$use])) {
                     self::${$property}[$class] = self::${$property}[$class] ? self::${$property}[$use] + self::${$property}[$class] : self::${$property}[$use];
                 }
@@ -305,7 +305,7 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
             $doc = $method->getDocComment();
 
             if (isset(self::$annotatedParameters[$class][$method->name])) {
-                $definedParameters = array();
+                $definedParameters = [];
                 foreach ($method->getParameters() as $parameter) {
                     $definedParameters[$parameter->name] = true;
                 }
@@ -323,10 +323,10 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
 
             $finalOrInternal = false;
 
-            foreach (array('final', 'internal') as $annotation) {
+            foreach (['final', 'internal'] as $annotation) {
                 if (false !== \strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$)#s', $doc, $notice)) {
                     $message = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
-                    self::${$annotation.'Methods'}[$class][$method->name] = array($class, $message);
+                    self::${$annotation.'Methods'}[$class][$method->name] = [$class, $message];
                     $finalOrInternal = true;
                 }
             }
@@ -338,7 +338,7 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
                 continue;
             }
             if (!isset(self::$annotatedParameters[$class][$method->name])) {
-                $definedParameters = array();
+                $definedParameters = [];
                 foreach ($method->getParameters() as $parameter) {
                     $definedParameters[$parameter->name] = true;
                 }
@@ -384,7 +384,7 @@ public function checkCase(\ReflectionClass $refl, $file, $class)
         if (0 === substr_compare($real, $tail, -$tailLen, $tailLen, true)
             && 0 !== substr_compare($real, $tail, -$tailLen, $tailLen, false)
         ) {
-            return array(substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1));
+            return [substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)];
         }
     }
 
@@ -414,7 +414,7 @@ private function darwinRealpath($real)
                 $k = $kDir;
                 $i = \strlen($dir) - 1;
                 while (!isset(self::$darwinCache[$k])) {
-                    self::$darwinCache[$k] = array($dir, array());
+                    self::$darwinCache[$k] = [$dir, []];
                     self::$darwinCache[$dir] = &self::$darwinCache[$k];
 
                     while ('/' !== $dir[--$i]) {
diff --git a/src/Symfony/Component/Debug/ErrorHandler.php b/src/Symfony/Component/Debug/ErrorHandler.php
index 2eb058ebe139..efbfa5bcaa52 100644
--- a/src/Symfony/Component/Debug/ErrorHandler.php
+++ b/src/Symfony/Component/Debug/ErrorHandler.php
@@ -48,7 +48,7 @@
  */
 class ErrorHandler
 {
-    private $levels = array(
+    private $levels = [
         E_DEPRECATED => 'Deprecated',
         E_USER_DEPRECATED => 'User Deprecated',
         E_NOTICE => 'Notice',
@@ -64,25 +64,25 @@ class ErrorHandler
         E_PARSE => 'Parse Error',
         E_ERROR => 'Error',
         E_CORE_ERROR => 'Core Error',
-    );
-
-    private $loggers = array(
-        E_DEPRECATED => array(null, LogLevel::INFO),
-        E_USER_DEPRECATED => array(null, LogLevel::INFO),
-        E_NOTICE => array(null, LogLevel::WARNING),
-        E_USER_NOTICE => array(null, LogLevel::WARNING),
-        E_STRICT => array(null, LogLevel::WARNING),
-        E_WARNING => array(null, LogLevel::WARNING),
-        E_USER_WARNING => array(null, LogLevel::WARNING),
-        E_COMPILE_WARNING => array(null, LogLevel::WARNING),
-        E_CORE_WARNING => array(null, LogLevel::WARNING),
-        E_USER_ERROR => array(null, LogLevel::CRITICAL),
-        E_RECOVERABLE_ERROR => array(null, LogLevel::CRITICAL),
-        E_COMPILE_ERROR => array(null, LogLevel::CRITICAL),
-        E_PARSE => array(null, LogLevel::CRITICAL),
-        E_ERROR => array(null, LogLevel::CRITICAL),
-        E_CORE_ERROR => array(null, LogLevel::CRITICAL),
-    );
+    ];
+
+    private $loggers = [
+        E_DEPRECATED => [null, LogLevel::INFO],
+        E_USER_DEPRECATED => [null, LogLevel::INFO],
+        E_NOTICE => [null, LogLevel::WARNING],
+        E_USER_NOTICE => [null, LogLevel::WARNING],
+        E_STRICT => [null, LogLevel::WARNING],
+        E_WARNING => [null, LogLevel::WARNING],
+        E_USER_WARNING => [null, LogLevel::WARNING],
+        E_COMPILE_WARNING => [null, LogLevel::WARNING],
+        E_CORE_WARNING => [null, LogLevel::WARNING],
+        E_USER_ERROR => [null, LogLevel::CRITICAL],
+        E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
+        E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
+        E_PARSE => [null, LogLevel::CRITICAL],
+        E_ERROR => [null, LogLevel::CRITICAL],
+        E_CORE_ERROR => [null, LogLevel::CRITICAL],
+    ];
 
     private $thrownErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
     private $scopedErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
@@ -98,7 +98,7 @@ class ErrorHandler
 
     private static $reservedMemory;
     private static $toStringException = null;
-    private static $silencedErrorCache = array();
+    private static $silencedErrorCache = [];
     private static $silencedErrorCount = 0;
     private static $exitCode = 0;
 
@@ -121,10 +121,10 @@ public static function register(self $handler = null, $replace = true)
             $handler = new static();
         }
 
-        if (null === $prev = set_error_handler(array($handler, 'handleError'))) {
+        if (null === $prev = set_error_handler([$handler, 'handleError'])) {
             restore_error_handler();
             // Specifying the error types earlier would expose us to https://bugs.php.net/63206
-            set_error_handler(array($handler, 'handleError'), $handler->thrownErrors | $handler->loggedErrors);
+            set_error_handler([$handler, 'handleError'], $handler->thrownErrors | $handler->loggedErrors);
             $handler->isRoot = true;
         }
 
@@ -138,12 +138,12 @@ public static function register(self $handler = null, $replace = true)
         } else {
             $handlerIsRegistered = true;
         }
-        if (\is_array($prev = set_exception_handler(array($handler, 'handleException'))) && $prev[0] instanceof self) {
+        if (\is_array($prev = set_exception_handler([$handler, 'handleException'])) && $prev[0] instanceof self) {
             restore_exception_handler();
             if (!$handlerIsRegistered) {
                 $handler = $prev[0];
             } elseif ($handler !== $prev[0] && $replace) {
-                set_exception_handler(array($handler, 'handleException'));
+                set_exception_handler([$handler, 'handleException']);
                 $p = $prev[0]->setExceptionHandler(null);
                 $handler->setExceptionHandler($p);
                 $prev[0]->setExceptionHandler($p);
@@ -176,12 +176,12 @@ public function __construct(BufferingLogger $bootstrappingLogger = null)
      */
     public function setDefaultLogger(LoggerInterface $logger, $levels = E_ALL, $replace = false)
     {
-        $loggers = array();
+        $loggers = [];
 
         if (\is_array($levels)) {
             foreach ($levels as $type => $logLevel) {
                 if (empty($this->loggers[$type][0]) || $replace || $this->loggers[$type][0] === $this->bootstrappingLogger) {
-                    $loggers[$type] = array($logger, $logLevel);
+                    $loggers[$type] = [$logger, $logLevel];
                 }
             }
         } else {
@@ -212,14 +212,14 @@ public function setLoggers(array $loggers)
     {
         $prevLogged = $this->loggedErrors;
         $prev = $this->loggers;
-        $flush = array();
+        $flush = [];
 
         foreach ($loggers as $type => $log) {
             if (!isset($prev[$type])) {
                 throw new \InvalidArgumentException('Unknown error type: '.$type);
             }
             if (!\is_array($log)) {
-                $log = array($log);
+                $log = [$log];
             } elseif (!array_key_exists(0, $log)) {
                 throw new \InvalidArgumentException('No logger provided');
             }
@@ -356,9 +356,9 @@ private function reRegister($prev)
             if ($handler === $this) {
                 restore_error_handler();
                 if ($this->isRoot) {
-                    set_error_handler(array($this, 'handleError'), $this->thrownErrors | $this->loggedErrors);
+                    set_error_handler([$this, 'handleError'], $this->thrownErrors | $this->loggedErrors);
                 } else {
-                    set_error_handler(array($this, 'handleError'));
+                    set_error_handler([$this, 'handleError']);
                 }
             }
         }
@@ -395,9 +395,9 @@ public function handleError($type, $message, $file, $line)
         $scope = $this->scopedErrors & $type;
 
         if (4 < $numArgs = \func_num_args()) {
-            $context = $scope ? (func_get_arg(4) ?: array()) : array();
+            $context = $scope ? (func_get_arg(4) ?: []) : [];
         } else {
-            $context = array();
+            $context = [];
         }
 
         if (isset($context['GLOBALS']) && $scope) {
@@ -417,19 +417,19 @@ public function handleError($type, $message, $file, $line)
             self::$toStringException = null;
         } elseif (!$throw && !($type & $level)) {
             if (!isset(self::$silencedErrorCache[$id = $file.':'.$line])) {
-                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 5), $type, $file, $line, false) : array();
-                $errorAsException = new SilencedErrorContext($type, $file, $line, isset($lightTrace[1]) ? array($lightTrace[0]) : $lightTrace);
+                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 5), $type, $file, $line, false) : [];
+                $errorAsException = new SilencedErrorContext($type, $file, $line, isset($lightTrace[1]) ? [$lightTrace[0]] : $lightTrace);
             } elseif (isset(self::$silencedErrorCache[$id][$message])) {
                 $lightTrace = null;
                 $errorAsException = self::$silencedErrorCache[$id][$message];
                 ++$errorAsException->count;
             } else {
-                $lightTrace = array();
+                $lightTrace = [];
                 $errorAsException = null;
             }
 
             if (100 < ++self::$silencedErrorCount) {
-                self::$silencedErrorCache = $lightTrace = array();
+                self::$silencedErrorCache = $lightTrace = [];
                 self::$silencedErrorCount = 1;
             }
             if ($errorAsException) {
@@ -446,8 +446,8 @@ public function handleError($type, $message, $file, $line)
                 $lightTrace = $this->cleanTrace($backtrace, $type, $file, $line, $throw);
                 $this->traceReflector->setValue($errorAsException, $lightTrace);
             } else {
-                $this->traceReflector->setValue($errorAsException, array());
-                $backtrace = array();
+                $this->traceReflector->setValue($errorAsException, []);
+                $backtrace = [];
             }
         }
 
@@ -493,7 +493,7 @@ public function handleError($type, $message, $file, $line)
             try {
                 $this->isRecursive = true;
                 $level = ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG;
-                $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? array('exception' => $errorAsException) : array());
+                $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? ['exception' => $errorAsException] : []);
             } finally {
                 $this->isRecursive = false;
             }
@@ -527,12 +527,12 @@ public function handleException($exception, array $error = null)
             }
             if ($exception instanceof FatalErrorException) {
                 if ($exception instanceof FatalThrowableError) {
-                    $error = array(
+                    $error = [
                         'type' => $type,
                         'message' => $message,
                         'file' => $exception->getFile(),
                         'line' => $exception->getLine(),
-                    );
+                    ];
                 } else {
                     $message = 'Fatal '.$message;
                 }
@@ -544,7 +544,7 @@ public function handleException($exception, array $error = null)
         }
         if ($this->loggedErrors & $type) {
             try {
-                $this->loggers[$type][0]->log($this->loggers[$type][1], $message, array('exception' => $exception));
+                $this->loggers[$type][0]->log($this->loggers[$type][1], $message, ['exception' => $exception]);
             } catch (\Throwable $handlerException) {
             }
         }
@@ -586,7 +586,7 @@ public static function handleFatalError(array $error = null)
         }
 
         $handler = self::$reservedMemory = null;
-        $handlers = array();
+        $handlers = [];
         $previousHandler = null;
         $sameHandlerLimit = 10;
 
@@ -617,7 +617,7 @@ public static function handleFatalError(array $error = null)
             $handler[0]->setExceptionHandler($h);
         }
         $handler = $handler[0];
-        $handlers = array();
+        $handlers = [];
 
         if ($exit = null === $error) {
             $error = error_get_last();
@@ -661,11 +661,11 @@ public static function handleFatalError(array $error = null)
      */
     protected function getFatalErrorHandlers()
     {
-        return array(
+        return [
             new UndefinedFunctionFatalErrorHandler(),
             new UndefinedMethodFatalErrorHandler(),
             new ClassNotFoundFatalErrorHandler(),
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AbstractRecursivePass.php b/src/Symfony/Component/DependencyInjection/Compiler/AbstractRecursivePass.php
index d6bfc0c648f7..89857f78a814 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AbstractRecursivePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AbstractRecursivePass.php
@@ -86,7 +86,7 @@ protected function processValue($value, $isRoot = false)
         } elseif ($value instanceof ArgumentInterface) {
             $value->setValues($this->processValue($value->getValues()));
         } elseif ($value instanceof Expression && $this->processExpressions) {
-            $this->getExpressionLanguage()->compile((string) $value, array('this' => 'container'));
+            $this->getExpressionLanguage()->compile((string) $value, ['this' => 'container']);
         } elseif ($value instanceof Definition) {
             $value->setArguments($this->processValue($value->getArguments()));
             $value->setProperties($this->processValue($value->getProperties()));
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php b/src/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php
index adaded42fa71..2dafb5378946 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php
@@ -78,7 +78,7 @@ public function process(ContainerBuilder $container)
         try {
             parent::process($container);
         } finally {
-            $this->aliases = $this->definitions = array();
+            $this->aliases = $this->definitions = [];
         }
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php b/src/Symfony/Component/DependencyInjection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php
index e987b1ad3122..eef71587cdd4 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php
@@ -23,14 +23,14 @@
  */
 class CheckExceptionOnInvalidReferenceBehaviorPass extends AbstractRecursivePass
 {
-    private $serviceLocatorContextIds = array();
+    private $serviceLocatorContextIds = [];
 
     /**
      * {@inheritdoc}
      */
     public function process(ContainerBuilder $container)
     {
-        $this->serviceLocatorContextIds = array();
+        $this->serviceLocatorContextIds = [];
         foreach ($container->findTaggedServiceIds('container.service_locator_context') as $id => $tags) {
             $this->serviceLocatorContextIds[$id] = $tags[0]['id'];
             $container->getDefinition($id)->clearTag('container.service_locator_context');
@@ -39,7 +39,7 @@ public function process(ContainerBuilder $container)
         try {
             return parent::process($container);
         } finally {
-            $this->serviceLocatorContextIds = array();
+            $this->serviceLocatorContextIds = [];
         }
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
index 8681c56f69fc..b326a30c5048 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
@@ -26,10 +26,10 @@ class InlineServiceDefinitionsPass extends AbstractRecursivePass implements Repe
 {
     private $analyzingPass;
     private $repeatedPass;
-    private $cloningIds = array();
-    private $connectedIds = array();
-    private $notInlinedIds = array();
-    private $inlinedIds = array();
+    private $cloningIds = [];
+    private $connectedIds = [];
+    private $notInlinedIds = [];
+    private $inlinedIds = [];
     private $graph;
 
     public function __construct(AnalyzeServiceReferencesPass $analyzingPass = null)
@@ -68,7 +68,7 @@ public function process(ContainerBuilder $container)
                 }
                 $this->graph = $analyzedContainer->getCompiler()->getServiceReferenceGraph();
                 $notInlinedIds = $this->notInlinedIds;
-                $this->connectedIds = $this->notInlinedIds = $this->inlinedIds = array();
+                $this->connectedIds = $this->notInlinedIds = $this->inlinedIds = [];
 
                 foreach ($analyzedContainer->getDefinitions() as $id => $definition) {
                     if (!$this->graph->hasNode($id)) {
@@ -96,7 +96,7 @@ public function process(ContainerBuilder $container)
             }
         } finally {
             $this->container = null;
-            $this->connectedIds = $this->notInlinedIds = $this->inlinedIds = array();
+            $this->connectedIds = $this->notInlinedIds = $this->inlinedIds = [];
             $this->graph = null;
         }
     }
@@ -193,7 +193,7 @@ private function isInlineableDefinition($id, Definition $definition)
         }
         $this->connectedIds[$id] = true;
 
-        $srcIds = array();
+        $srcIds = [];
         $srcCount = 0;
         $isReferencedByConstructor = false;
         foreach ($this->graph->getNode($id)->getInEdges() as $edge) {
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
index e5fb5b212fc9..e39cd4981ad8 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
@@ -29,9 +29,9 @@ class PassConfig
     const TYPE_REMOVE = 'removing';
 
     private $mergePass;
-    private $afterRemovingPasses = array();
-    private $beforeOptimizationPasses = array();
-    private $beforeRemovingPasses = array();
+    private $afterRemovingPasses = [];
+    private $beforeOptimizationPasses = [];
+    private $beforeRemovingPasses = [];
     private $optimizationPasses;
     private $removingPasses;
 
@@ -39,16 +39,16 @@ public function __construct()
     {
         $this->mergePass = new MergeExtensionConfigurationPass();
 
-        $this->beforeOptimizationPasses = array(
-            100 => array(
+        $this->beforeOptimizationPasses = [
+            100 => [
                 new ResolveClassPass(),
                 new ResolveInstanceofConditionalsPass(),
                 new RegisterEnvVarProcessorsPass(),
-            ),
-            -1000 => array(new ExtensionCompilerPass()),
-        );
+            ],
+            -1000 => [new ExtensionCompilerPass()],
+        ];
 
-        $this->optimizationPasses = array(array(
+        $this->optimizationPasses = [[
             new ValidateEnvPlaceholdersPass(),
             new ResolveChildDefinitionsPass(),
             new ServiceLocatorTagPass(),
@@ -69,15 +69,15 @@ public function __construct()
             new CheckCircularReferencesPass(),
             new CheckReferenceValidityPass(),
             new CheckArgumentsValidityPass(false),
-        ));
+        ]];
 
-        $this->beforeRemovingPasses = array(
-            -100 => array(
+        $this->beforeRemovingPasses = [
+            -100 => [
                 new ResolvePrivatesPass(),
-            ),
-        );
+            ],
+        ];
 
-        $this->removingPasses = array(array(
+        $this->removingPasses = [[
             new RemovePrivateAliasesPass(),
             new ReplaceAliasByActualDefinitionPass(),
             new RemoveAbstractDefinitionsPass(),
@@ -87,7 +87,7 @@ public function __construct()
             new DefinitionErrorExceptionPass(),
             new CheckExceptionOnInvalidReferenceBehaviorPass(),
             new ResolveHotPathPass(),
-        ));
+        ]];
     }
 
     /**
@@ -98,7 +98,7 @@ public function __construct()
     public function getPasses()
     {
         return array_merge(
-            array($this->mergePass),
+            [$this->mergePass],
             $this->getBeforeOptimizationPasses(),
             $this->getOptimizationPasses(),
             $this->getBeforeRemovingPasses(),
@@ -126,7 +126,7 @@ public function addPass(CompilerPassInterface $pass, $type = self::TYPE_BEFORE_O
         $passes = &$this->$property;
 
         if (!isset($passes[$priority])) {
-            $passes[$priority] = array();
+            $passes[$priority] = [];
         }
         $passes[$priority][] = $pass;
     }
@@ -203,7 +203,7 @@ public function setMergePass(CompilerPassInterface $pass)
      */
     public function setAfterRemovingPasses(array $passes)
     {
-        $this->afterRemovingPasses = array($passes);
+        $this->afterRemovingPasses = [$passes];
     }
 
     /**
@@ -213,7 +213,7 @@ public function setAfterRemovingPasses(array $passes)
      */
     public function setBeforeOptimizationPasses(array $passes)
     {
-        $this->beforeOptimizationPasses = array($passes);
+        $this->beforeOptimizationPasses = [$passes];
     }
 
     /**
@@ -223,7 +223,7 @@ public function setBeforeOptimizationPasses(array $passes)
      */
     public function setBeforeRemovingPasses(array $passes)
     {
-        $this->beforeRemovingPasses = array($passes);
+        $this->beforeRemovingPasses = [$passes];
     }
 
     /**
@@ -233,7 +233,7 @@ public function setBeforeRemovingPasses(array $passes)
      */
     public function setOptimizationPasses(array $passes)
     {
-        $this->optimizationPasses = array($passes);
+        $this->optimizationPasses = [$passes];
     }
 
     /**
@@ -243,7 +243,7 @@ public function setOptimizationPasses(array $passes)
      */
     public function setRemovingPasses(array $passes)
     {
-        $this->removingPasses = array($passes);
+        $this->removingPasses = [$passes];
     }
 
     /**
@@ -256,7 +256,7 @@ public function setRemovingPasses(array $passes)
     private function sortPasses(array $passes)
     {
         if (0 === \count($passes)) {
-            return array();
+            return [];
         }
 
         krsort($passes);
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/RegisterEnvVarProcessorsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/RegisterEnvVarProcessorsPass.php
index 297f806286c0..852e7ca44aae 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/RegisterEnvVarProcessorsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/RegisterEnvVarProcessorsPass.php
@@ -25,13 +25,13 @@
  */
 class RegisterEnvVarProcessorsPass implements CompilerPassInterface
 {
-    private static $allowedTypes = array('array', 'bool', 'float', 'int', 'string');
+    private static $allowedTypes = ['array', 'bool', 'float', 'int', 'string'];
 
     public function process(ContainerBuilder $container)
     {
         $bag = $container->getParameterBag();
-        $types = array();
-        $processors = array();
+        $types = [];
+        $processors = [];
         foreach ($container->findTaggedServiceIds('container.env_var_processor') as $id => $tags) {
             if (!$r = $container->getReflectionClass($class = $container->getDefinition($id)->getClass())) {
                 throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/RemoveUnusedDefinitionsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/RemoveUnusedDefinitionsPass.php
index dddc13e667db..6d1bbbffe906 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/RemoveUnusedDefinitionsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/RemoveUnusedDefinitionsPass.php
@@ -22,7 +22,7 @@
  */
 class RemoveUnusedDefinitionsPass extends AbstractRecursivePass implements RepeatablePassInterface
 {
-    private $connectedIds = array();
+    private $connectedIds = [];
 
     /**
      * {@inheritdoc}
@@ -40,7 +40,7 @@ public function process(ContainerBuilder $container)
         try {
             $this->enableExpressionProcessing();
             $this->container = $container;
-            $connectedIds = array();
+            $connectedIds = [];
             $aliases = $container->getAliases();
 
             foreach ($aliases as $id => $alias) {
@@ -58,7 +58,7 @@ public function process(ContainerBuilder $container)
 
             while ($this->connectedIds) {
                 $ids = $this->connectedIds;
-                $this->connectedIds = array();
+                $this->connectedIds = [];
                 foreach ($ids as $id) {
                     if (!isset($connectedIds[$id]) && $container->hasDefinition($id)) {
                         $connectedIds[$id] = true;
@@ -76,7 +76,7 @@ public function process(ContainerBuilder $container)
             }
         } finally {
             $this->container = null;
-            $this->connectedIds = array();
+            $this->connectedIds = [];
         }
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
index 885e9d21abed..99810963612d 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
@@ -56,7 +56,7 @@ public function process(ContainerBuilder $container)
                 $definition = $container->getDefinition($targetId);
             } catch (ServiceNotFoundException $e) {
                 if ('' !== $e->getId() && '@' === $e->getId()[0]) {
-                    throw new ServiceNotFoundException($e->getId(), $e->getSourceId(), null, array(substr($e->getId(), 1)));
+                    throw new ServiceNotFoundException($e->getId(), $e->getSourceId(), null, [substr($e->getId(), 1)]);
                 }
 
                 throw $e;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
index cc9b0dd01aac..02021c8bc5e6 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveInstanceofConditionalsPass.php
@@ -47,7 +47,7 @@ public function process(ContainerBuilder $container)
     private function processDefinition(ContainerBuilder $container, $id, Definition $definition)
     {
         $instanceofConditionals = $definition->getInstanceofConditionals();
-        $autoconfiguredInstanceof = $definition->isAutoconfigured() ? $container->getAutoconfiguredInstanceof() : array();
+        $autoconfiguredInstanceof = $definition->isAutoconfigured() ? $container->getAutoconfiguredInstanceof() : [];
         if (!$instanceofConditionals && !$autoconfiguredInstanceof) {
             return $definition;
         }
@@ -58,11 +58,11 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
 
         $conditionals = $this->mergeConditionals($autoconfiguredInstanceof, $instanceofConditionals, $container);
 
-        $definition->setInstanceofConditionals(array());
+        $definition->setInstanceofConditionals([]);
         $parent = $shared = null;
-        $instanceofTags = array();
-        $instanceofCalls = array();
-        $instanceofBindings = array();
+        $instanceofTags = [];
+        $instanceofCalls = [];
+        $instanceofBindings = [];
 
         foreach ($conditionals as $interface => $instanceofDefs) {
             if ($interface !== $class && (!$container->getReflectionClass($class, false))) {
@@ -86,9 +86,9 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
                     $instanceofCalls[] = $methodCall;
                 }
 
-                $instanceofDef->setTags(array());
-                $instanceofDef->setMethodCalls(array());
-                $instanceofDef->setBindings(array());
+                $instanceofDef->setTags([]);
+                $instanceofDef->setMethodCalls([]);
+                $instanceofDef->setBindings([]);
 
                 if (isset($instanceofDef->getChanges()['shared'])) {
                     $shared = $instanceofDef->isShared();
@@ -101,7 +101,7 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
             $abstract = $container->setDefinition('.abstract.instanceof.'.$id, $definition);
 
             // cast Definition to ChildDefinition
-            $definition->setBindings(array());
+            $definition->setBindings([]);
             $definition = serialize($definition);
             $definition = substr_replace($definition, '53', 2, 2);
             $definition = substr_replace($definition, 'Child', 44, 0);
@@ -130,11 +130,11 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
 
             // reset fields with "merge" behavior
             $abstract
-                ->setBindings(array())
-                ->setArguments(array())
-                ->setMethodCalls(array())
+                ->setBindings([])
+                ->setArguments([])
+                ->setMethodCalls([])
                 ->setDecoratedService(null)
-                ->setTags(array())
+                ->setTags([])
                 ->setAbstract(true);
         }
 
@@ -144,7 +144,7 @@ private function processDefinition(ContainerBuilder $container, $id, Definition
     private function mergeConditionals(array $autoconfiguredInstanceof, array $instanceofConditionals, ContainerBuilder $container)
     {
         // make each value an array of ChildDefinition
-        $conditionals = array_map(function ($childDef) { return array($childDef); }, $autoconfiguredInstanceof);
+        $conditionals = array_map(function ($childDef) { return [$childDef]; }, $autoconfiguredInstanceof);
 
         foreach ($instanceofConditionals as $interface => $instanceofDef) {
             // make sure the interface/class exists (but don't validate automaticInstanceofConditionals)
@@ -153,7 +153,7 @@ private function mergeConditionals(array $autoconfiguredInstanceof, array $insta
             }
 
             if (!isset($autoconfiguredInstanceof[$interface])) {
-                $conditionals[$interface] = array();
+                $conditionals[$interface] = [];
             }
 
             $conditionals[$interface][] = $instanceofDef;
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
index acf8403225b4..e335307482ae 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ServiceLocatorTagPass.php
@@ -112,8 +112,8 @@ public static function register(ContainerBuilder $container, array $refMap, $cal
             // to derivate customized instances from the prototype one.
             $container->register($id .= '.'.$callerId, ServiceLocator::class)
                 ->setPublic(false)
-                ->setFactory(array(new Reference($locatorId), 'withContext'))
-                ->addTag('container.service_locator_context', array('id' => $callerId))
+                ->setFactory([new Reference($locatorId), 'withContext'])
+                ->addTag('container.service_locator_context', ['id' => $callerId])
                 ->addArgument($callerId)
                 ->addArgument(new Reference('service_container'));
         }
diff --git a/src/Symfony/Component/DependencyInjection/Container.php b/src/Symfony/Component/DependencyInjection/Container.php
index 603c560fbbef..938c0a8e3c81 100644
--- a/src/Symfony/Component/DependencyInjection/Container.php
+++ b/src/Symfony/Component/DependencyInjection/Container.php
@@ -42,17 +42,17 @@
 class Container implements ResettableContainerInterface
 {
     protected $parameterBag;
-    protected $services = array();
-    protected $privates = array();
-    protected $fileMap = array();
-    protected $methodMap = array();
-    protected $factories = array();
-    protected $aliases = array();
-    protected $loading = array();
-    protected $resolving = array();
-    protected $syntheticIds = array();
-
-    private $envCache = array();
+    protected $services = [];
+    protected $privates = [];
+    protected $fileMap = [];
+    protected $methodMap = [];
+    protected $factories = [];
+    protected $aliases = [];
+    protected $loading = [];
+    protected $resolving = [];
+    protected $syntheticIds = [];
+
+    private $envCache = [];
     private $compiled = false;
     private $getEnv;
 
@@ -222,7 +222,7 @@ public function get($id, $invalidBehavior = /* self::EXCEPTION_ON_INVALID_REFERE
     {
         return $this->services[$id]
             ?? $this->services[$id = $this->aliases[$id] ?? $id]
-            ?? ('service_container' === $id ? $this : ($this->factories[$id] ?? array($this, 'make'))($id, $invalidBehavior));
+            ?? ('service_container' === $id ? $this : ($this->factories[$id] ?? [$this, 'make'])($id, $invalidBehavior));
     }
 
     /**
@@ -233,7 +233,7 @@ public function get($id, $invalidBehavior = /* self::EXCEPTION_ON_INVALID_REFERE
     private function make(string $id, int $invalidBehavior)
     {
         if (isset($this->loading[$id])) {
-            throw new ServiceCircularReferenceException($id, array_merge(array_keys($this->loading), array($id)));
+            throw new ServiceCircularReferenceException($id, array_merge(array_keys($this->loading), [$id]));
         }
 
         $this->loading[$id] = true;
@@ -257,13 +257,13 @@ private function make(string $id, int $invalidBehavior)
                 throw new ServiceNotFoundException($id);
             }
             if (isset($this->syntheticIds[$id])) {
-                throw new ServiceNotFoundException($id, null, null, array(), sprintf('The "%s" service is synthetic, it needs to be set at boot time before it can be used.', $id));
+                throw new ServiceNotFoundException($id, null, null, [], sprintf('The "%s" service is synthetic, it needs to be set at boot time before it can be used.', $id));
             }
             if (isset($this->getRemovedIds()[$id])) {
-                throw new ServiceNotFoundException($id, null, null, array(), sprintf('The "%s" service or alias has been removed or inlined when the container was compiled. You should either make it public, or stop using the container directly and use dependency injection instead.', $id));
+                throw new ServiceNotFoundException($id, null, null, [], sprintf('The "%s" service or alias has been removed or inlined when the container was compiled. You should either make it public, or stop using the container directly and use dependency injection instead.', $id));
             }
 
-            $alternatives = array();
+            $alternatives = [];
             foreach ($this->getServiceIds() as $knownId) {
                 if ('' === $knownId || '.' === $knownId[0]) {
                     continue;
@@ -304,7 +304,7 @@ public function initialized($id)
     public function reset()
     {
         $services = $this->services + $this->privates;
-        $this->services = $this->factories = $this->privates = array();
+        $this->services = $this->factories = $this->privates = [];
 
         foreach ($services as $service) {
             try {
@@ -324,7 +324,7 @@ public function reset()
      */
     public function getServiceIds()
     {
-        return array_unique(array_merge(array('service_container'), array_keys($this->fileMap), array_keys($this->methodMap), array_keys($this->services)));
+        return array_unique(array_merge(['service_container'], array_keys($this->fileMap), array_keys($this->methodMap), array_keys($this->services)));
     }
 
     /**
@@ -334,7 +334,7 @@ public function getServiceIds()
      */
     public function getRemovedIds()
     {
-        return array();
+        return [];
     }
 
     /**
@@ -346,7 +346,7 @@ public function getRemovedIds()
      */
     public static function camelize($id)
     {
-        return strtr(ucwords(strtr($id, array('_' => ' ', '.' => '_ ', '\\' => '_ '))), array(' ' => ''));
+        return strtr(ucwords(strtr($id, ['_' => ' ', '.' => '_ ', '\\' => '_ '])), [' ' => '']);
     }
 
     /**
@@ -358,7 +358,7 @@ public static function camelize($id)
      */
     public static function underscore($id)
     {
-        return strtolower(preg_replace(array('/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'), array('\\1_\\2', '\\1_\\2'), str_replace('_', '.', $id)));
+        return strtolower(preg_replace(['/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'], ['\\1_\\2', '\\1_\\2'], str_replace('_', '.', $id)));
     }
 
     /**
@@ -389,7 +389,7 @@ protected function getEnv($name)
             return $this->envCache[$name];
         }
         if (!$this->has($id = 'container.env_var_processors_locator')) {
-            $this->set($id, new ServiceLocator(array()));
+            $this->set($id, new ServiceLocator([]));
         }
         if (!$this->getEnv) {
             $this->getEnv = new \ReflectionMethod($this, __FUNCTION__);
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 4c611bc6d858..8630052822d7 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -54,29 +54,29 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     /**
      * @var ExtensionInterface[]
      */
-    private $extensions = array();
+    private $extensions = [];
 
     /**
      * @var ExtensionInterface[]
      */
-    private $extensionsByNs = array();
+    private $extensionsByNs = [];
 
     /**
      * @var Definition[]
      */
-    private $definitions = array();
+    private $definitions = [];
 
     /**
      * @var Alias[]
      */
-    private $aliasDefinitions = array();
+    private $aliasDefinitions = [];
 
     /**
      * @var ResourceInterface[]
      */
-    private $resources = array();
+    private $resources = [];
 
-    private $extensionConfigs = array();
+    private $extensionConfigs = [];
 
     /**
      * @var Compiler
@@ -98,33 +98,33 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    private $expressionLanguageProviders = array();
+    private $expressionLanguageProviders = [];
 
     /**
      * @var string[] with tag names used by findTaggedServiceIds
      */
-    private $usedTags = array();
+    private $usedTags = [];
 
     /**
      * @var string[][] a map of env var names to their placeholders
      */
-    private $envPlaceholders = array();
+    private $envPlaceholders = [];
 
     /**
      * @var int[] a map of env vars to their resolution counter
      */
-    private $envCounters = array();
+    private $envCounters = [];
 
     /**
      * @var string[] the list of vendor directories
      */
     private $vendors;
 
-    private $autoconfiguredInstanceof = array();
+    private $autoconfiguredInstanceof = [];
 
-    private $removedIds = array();
+    private $removedIds = [];
 
-    private static $internalTypes = array(
+    private static $internalTypes = [
         'int' => true,
         'float' => true,
         'string' => true,
@@ -136,7 +136,7 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
         'callable' => true,
         'iterable' => true,
         'mixed' => true,
-    );
+    ];
 
     public function __construct(ParameterBagInterface $parameterBag = null)
     {
@@ -431,7 +431,7 @@ public function loadFromExtension($extension, array $values = null)
         }
 
         if (\func_num_args() < 2) {
-            $values = array();
+            $values = [];
         }
 
         $namespace = $this->getExtension($extension)->getAlias();
@@ -563,7 +563,7 @@ private function doGet($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_
         }
         if (null === $inlineServices) {
             $isConstructorArgument = true;
-            $inlineServices = array();
+            $inlineServices = [];
         }
         try {
             if (ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE === $invalidBehavior) {
@@ -647,7 +647,7 @@ public function merge(self $container)
 
         foreach ($this->extensions as $name => $extension) {
             if (!isset($this->extensionConfigs[$name])) {
-                $this->extensionConfigs[$name] = array();
+                $this->extensionConfigs[$name] = [];
             }
 
             $this->extensionConfigs[$name] = array_merge($this->extensionConfigs[$name], $container->getExtensionConfig($name));
@@ -657,7 +657,7 @@ public function merge(self $container)
             $envPlaceholders = $container->getParameterBag()->getEnvPlaceholders();
             $this->getParameterBag()->mergeEnvPlaceholders($container->getParameterBag());
         } else {
-            $envPlaceholders = array();
+            $envPlaceholders = [];
         }
 
         foreach ($container->envCounters as $env => $count) {
@@ -690,7 +690,7 @@ public function merge(self $container)
     public function getExtensionConfig($name)
     {
         if (!isset($this->extensionConfigs[$name])) {
-            $this->extensionConfigs[$name] = array();
+            $this->extensionConfigs[$name] = [];
         }
 
         return $this->extensionConfigs[$name];
@@ -705,7 +705,7 @@ public function getExtensionConfig($name)
     public function prependExtensionConfig($name, array $config)
     {
         if (!isset($this->extensionConfigs[$name])) {
-            $this->extensionConfigs[$name] = array();
+            $this->extensionConfigs[$name] = [];
         }
 
         array_unshift($this->extensionConfigs[$name], $config);
@@ -753,7 +753,7 @@ public function compile(bool $resolveEnvPlaceholders = false)
             }
         }
 
-        $this->extensionConfigs = array();
+        $this->extensionConfigs = [];
 
         if ($bag instanceof EnvPlaceholderParameterBag) {
             if ($resolveEnvPlaceholders) {
@@ -807,7 +807,7 @@ public function addAliases(array $aliases)
      */
     public function setAliases(array $aliases)
     {
-        $this->aliasDefinitions = array();
+        $this->aliasDefinitions = [];
         $this->addAliases($aliases);
     }
 
@@ -947,7 +947,7 @@ public function addDefinitions(array $definitions)
      */
     public function setDefinitions(array $definitions)
     {
-        $this->definitions = array();
+        $this->definitions = [];
         $this->addDefinitions($definitions);
     }
 
@@ -1031,7 +1031,7 @@ public function findDefinition($id)
     {
         $id = (string) $id;
 
-        $seen = array();
+        $seen = [];
         while (isset($this->aliasDefinitions[$id])) {
             $id = (string) $this->aliasDefinitions[$id];
 
@@ -1103,7 +1103,7 @@ private function createService(Definition $definition, array &$inlineServices, $
 
         if (null !== $factory = $definition->getFactory()) {
             if (\is_array($factory)) {
-                $factory = array($this->doResolveServices($parameterBag->resolveValue($factory[0]), $inlineServices, $isConstructorArgument), $factory[1]);
+                $factory = [$this->doResolveServices($parameterBag->resolveValue($factory[0]), $inlineServices, $isConstructorArgument), $factory[1]];
             } elseif (!\is_string($factory)) {
                 throw new RuntimeException(sprintf('Cannot create service "%s" because of invalid factory', $id));
             }
@@ -1181,7 +1181,7 @@ public function resolveServices($value)
         return $this->doResolveServices($value);
     }
 
-    private function doResolveServices($value, array &$inlineServices = array(), $isConstructorArgument = false)
+    private function doResolveServices($value, array &$inlineServices = [], $isConstructorArgument = false)
     {
         if (\is_array($value)) {
             foreach ($value as $k => $v) {
@@ -1228,13 +1228,13 @@ private function doResolveServices($value, array &$inlineServices = array(), $is
                 return $count;
             });
         } elseif ($value instanceof ServiceLocatorArgument) {
-            $refs = array();
+            $refs = [];
             foreach ($value->getValues() as $k => $v) {
                 if ($v) {
-                    $refs[$k] = array($v);
+                    $refs[$k] = [$v];
                 }
             }
-            $value = new ServiceLocator(\Closure::fromCallable(array($this, 'resolveServices')), $refs);
+            $value = new ServiceLocator(\Closure::fromCallable([$this, 'resolveServices']), $refs);
         } elseif ($value instanceof Reference) {
             $value = $this->doGet((string) $value, $value->getInvalidBehavior(), $inlineServices, $isConstructorArgument);
         } elseif ($value instanceof Definition) {
@@ -1242,7 +1242,7 @@ private function doResolveServices($value, array &$inlineServices = array(), $is
         } elseif ($value instanceof Parameter) {
             $value = $this->getParameter((string) $value);
         } elseif ($value instanceof Expression) {
-            $value = $this->getExpressionLanguage()->evaluate($value, array('container' => $this));
+            $value = $this->getExpressionLanguage()->evaluate($value, ['container' => $this]);
         }
 
         return $value;
@@ -1270,7 +1270,7 @@ private function doResolveServices($value, array &$inlineServices = array(), $is
     public function findTaggedServiceIds($name, $throwOnAbstract = false)
     {
         $this->usedTags[] = $name;
-        $tags = array();
+        $tags = [];
         foreach ($this->getDefinitions() as $id => $definition) {
             if ($definition->hasTag($name)) {
                 if ($throwOnAbstract && $definition->isAbstract()) {
@@ -1290,7 +1290,7 @@ public function findTaggedServiceIds($name, $throwOnAbstract = false)
      */
     public function findTags()
     {
-        $tags = array();
+        $tags = [];
         foreach ($this->getDefinitions() as $id => $definition) {
             $tags = array_merge(array_keys($definition->getTags()), $tags);
         }
@@ -1389,7 +1389,7 @@ public function resolveEnvPlaceholders($value, $format = null, array &$usedEnvs
         }
 
         if (\is_array($value)) {
-            $result = array();
+            $result = [];
             foreach ($value as $k => $v) {
                 $result[\is_string($k) ? $this->resolveEnvPlaceholders($k, $format, $usedEnvs) : $k] = $this->resolveEnvPlaceholders($v, $format, $usedEnvs);
             }
@@ -1471,7 +1471,7 @@ public function log(CompilerPassInterface $pass, string $message)
      */
     public static function getServiceConditionals($value)
     {
-        $services = array();
+        $services = [];
 
         if (\is_array($value)) {
             foreach ($value as $v) {
@@ -1495,7 +1495,7 @@ public static function getServiceConditionals($value)
      */
     public static function getInitializedConditionals($value)
     {
-        $services = array();
+        $services = [];
 
         if (\is_array($value)) {
             foreach ($value as $v) {
@@ -1519,7 +1519,7 @@ public static function hash($value)
     {
         $hash = substr(base64_encode(hash('sha256', serialize($value), true)), 0, 7);
 
-        return str_replace(array('/', '+'), array('.', '_'), $hash);
+        return str_replace(['/', '+'], ['.', '_'], $hash);
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 71accf4f8c9a..0a2162d37204 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -62,7 +62,7 @@ class PhpDumper extends Dumper
     private $variableCount;
     private $inlinedDefinitions;
     private $serviceCalls;
-    private $reservedVariables = array('instance', 'class', 'this');
+    private $reservedVariables = ['instance', 'class', 'this'];
     private $expressionLanguage;
     private $targetDirRegex;
     private $targetDirMaxMatches;
@@ -73,14 +73,14 @@ class PhpDumper extends Dumper
     private $asFiles;
     private $hotPathTag;
     private $inlineRequires;
-    private $inlinedRequires = array();
-    private $circularReferences = array();
-    private $singleUsePrivateIds = array();
+    private $inlinedRequires = [];
+    private $circularReferences = [];
+    private $singleUsePrivateIds = [];
     private $addThrow = false;
     private $addGetService = false;
-    private $locatedIds = array();
+    private $locatedIds = [];
     private $serviceLocatorTag;
-    private $exportedVariables = array();
+    private $exportedVariables = [];
 
     /**
      * @var ProxyDumper
@@ -121,13 +121,13 @@ public function setProxyDumper(ProxyDumper $proxyDumper)
      *
      * @throws EnvParameterException When an env var exists but has not been dumped
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
-        $this->locatedIds = array();
+        $this->locatedIds = [];
         $this->targetDirRegex = null;
-        $this->inlinedRequires = array();
-        $this->exportedVariables = array();
-        $options = array_merge(array(
+        $this->inlinedRequires = [];
+        $this->exportedVariables = [];
+        $options = array_merge([
             'class' => 'ProjectServiceContainer',
             'base_class' => 'Container',
             'namespace' => '',
@@ -137,7 +137,7 @@ public function dump(array $options = array())
             'inline_class_loader_parameter' => 'container.dumper.inline_class_loader',
             'service_locator_tag' => 'container.service_locator',
             'build_time' => time(),
-        ), $options);
+        ], $options);
 
         $this->addThrow = $this->addGetService = false;
         $this->namespace = $options['namespace'];
@@ -171,9 +171,9 @@ public function dump(array $options = array())
         }
 
         (new AnalyzeServiceReferencesPass(false, !$this->getProxyDumper() instanceof NullDumper))->process($this->container);
-        $checkedNodes = array();
-        $this->circularReferences = array();
-        $this->singleUsePrivateIds = array();
+        $checkedNodes = [];
+        $this->circularReferences = [];
+        $this->singleUsePrivateIds = [];
         foreach ($this->container->getCompiler()->getServiceReferenceGraph()->getNodes() as $id => $node) {
             if (!$node->getValue() instanceof Definition) {
                 continue;
@@ -186,7 +186,7 @@ public function dump(array $options = array())
             }
         }
         $this->container->getCompiler()->getServiceReferenceGraph()->clear();
-        $checkedNodes = array();
+        $checkedNodes = [];
 
         $this->docStar = $options['debug'] ? '*' : '';
 
@@ -240,7 +240,7 @@ public function dump(array $options = array())
 // This file has been auto-generated by the Symfony Dependency
57AE
 Injection Component for internal use.
 
 EOF;
-            $files = array();
+            $files = [];
 
             $ids = $this->container->getRemovedIds();
             foreach ($this->container->getDefinitions() as $id => $definition) {
@@ -265,7 +265,7 @@ public function dump(array $options = array())
             }
             $files[$options['class'].'.php'] = $code.$this->endClass();
             $hash = ucfirst(strtr(ContainerBuilder::hash($files), '._', 'xx'));
-            $code = array();
+            $code = [];
 
             foreach ($files as $file => $c) {
                 $code["Container{$hash}/{$file}"] = $c;
@@ -308,12 +308,12 @@ public function dump(array $options = array())
         }
 
         $this->targetDirRegex = null;
-        $this->inlinedRequires = array();
-        $this->circularReferences = array();
-        $this->locatedIds = array();
-        $this->exportedVariables = array();
+        $this->inlinedRequires = [];
+        $this->circularReferences = [];
+        $this->locatedIds = [];
+        $this->exportedVariables = [];
 
-        $unusedEnvs = array();
+        $unusedEnvs = [];
         foreach ($this->container->getEnvCounters() as $env => $use) {
             if (!$use) {
                 $unusedEnvs[] = $env;
@@ -338,7 +338,7 @@ private function getProxyDumper(): ProxyDumper
         return $this->proxyDumper;
     }
 
-    private function analyzeCircularReferences($sourceId, array $edges, &$checkedNodes, &$currentPath = array())
+    private function analyzeCircularReferences($sourceId, array $edges, &$checkedNodes, &$currentPath = [])
     {
         $checkedNodes[$sourceId] = true;
         $currentPath[$sourceId] = $sourceId;
@@ -367,7 +367,7 @@ private function analyzeCircularReferences($sourceId, array $edges, &$checkedNod
         unset($currentPath[$sourceId]);
     }
 
-    private function connectCircularReferences($sourceId, &$currentPath, &$subPath = array())
+    private function connectCircularReferences($sourceId, &$currentPath, &$subPath = [])
     {
         $subPath[$sourceId] = $sourceId;
         $currentPath[$sourceId] = $sourceId;
@@ -423,7 +423,7 @@ private function collectLineage($class, array &$lineage)
 
     private function generateProxyClasses()
     {
-        $alreadyGenerated = array();
+        $alreadyGenerated = [];
         $definitions = $this->container->getDefinitions();
         $strip = '' === $this->docStar && method_exists('Symfony\Component\HttpKernel\Kernel', 'stripComments');
         $proxyDumper = $this->getProxyDumper();
@@ -454,7 +454,7 @@ private function addServiceInclude(string $cId, Definition $definition): string
         $code = '';
 
         if ($this->inlineRequires && !$this->isHotPath($definition)) {
-            $lineage = array();
+            $lineage = [];
             foreach ($this->inlinedDefinitions as $def) {
                 if (!$def->isDeprecated() && \is_string($class = \is_array($factory = $def->getFactory()) && \is_string($factory[0]) ? $factory[0] : $def->getClass())) {
                     $this->collectLineage($class, $lineage);
@@ -566,7 +566,7 @@ private function addServiceMethodCalls(Definition $definition, string $variableN
     {
         $calls = '';
         foreach ($definition->getMethodCalls() as $call) {
-            $arguments = array();
+            $arguments = [];
             foreach ($call[1] as $value) {
                 $arguments[] = $this->dumpValue($value);
             }
@@ -619,11 +619,11 @@ private function addServiceConfigurator(Definition $definition, string $variable
     private function addService(string $id, Definition $definition): array
     {
         $this->definitionVariables = new \SplObjectStorage();
-        $this->referenceVariables = array();
+        $this->referenceVariables = [];
         $this->variableCount = 0;
         $this->referenceVariables[$id] = new Variable('instance');
 
-        $return = array();
+        $return = [];
 
         if ($class = $definition->getClass()) {
             $class = $class instanceof Parameter ? '%'.$class.'%' : $this->container->resolveEnvPlaceholders($class);
@@ -680,8 +680,8 @@ protected function {$methodName}($lazyInitialization)
 EOF;
         }
 
-        $this->serviceCalls = array();
-        $this->inlinedDefinitions = $this->getDefinitionsFromArguments(array($definition), null, $this->serviceCalls);
+        $this->serviceCalls = [];
+        $this->inlinedDefinitions = $this->getDefinitionsFromArguments([$definition], null, $this->serviceCalls);
 
         $code .= $this->addServiceInclude($id, $definition);
 
@@ -705,7 +705,7 @@ protected function {$methodName}($lazyInitialization)
         $this->definitionVariables = $this->inlinedDefinitions = null;
         $this->referenceVariables = $this->serviceCalls = null;
 
-        return array($file, $code);
+        return [$file, $code];
     }
 
     private function addInlineVariables(string $id, Definition $definition, array $arguments, bool $forConstructor): string
@@ -782,11 +782,11 @@ private function addInlineService(string $id, Definition $definition, Definition
             return '';
         }
 
-        $arguments = array($inlineDef->getArguments(), $inlineDef->getFactory());
+        $arguments = [$inlineDef->getArguments(), $inlineDef->getFactory()];
 
         $code = $this->addInlineVariables($id, $definition, $arguments, $forConstructor);
 
-        if ($arguments = array_filter(array($inlineDef->getProperties(), $inlineDef->getMethodCalls(), $inlineDef->getConfigurator()))) {
+        if ($arguments = array_filter([$inlineDef->getProperties(), $inlineDef->getMethodCalls(), $inlineDef->getConfigurator()])) {
             $isSimpleInstance = false;
         } elseif ($definition !== $inlineDef && 2 > $this->inlinedDefinitions[$inlineDef]) {
             return $code;
@@ -855,9 +855,9 @@ private function generateServiceFiles(array $services)
                 if (!$definition->isShared()) {
                     $i = strpos($code, "\n\ninclude_once ");
                     if (false !== $i && false !== $i = strpos($code, "\n\n", 2 + $i)) {
-                        $code = array(substr($code, 0, 2 + $i), substr($code, 2 + $i));
+                        $code = [substr($code, 0, 2 + $i), substr($code, 2 + $i)];
                     } else {
-                        $code = array("\n", $code);
+                        $code = ["\n", $code];
                     }
                     $code[1] = implode("\n", array_map(function ($line) { return $line ? '    '.$line : $line; }, explode("\n", $code[1])));
                     $factory = sprintf('$this->factories%s[\'%s\']', $definition->isPublic() ? '' : "['service_container']", $id);
@@ -875,7 +875,7 @@ private function addNewInstance(Definition $definition, string $return = '', str
         $tail = $return ? ";\n" : '';
 
         if (BaseServiceLocator::class === $definition->getClass() && $definition->hasTag($this->serviceLocatorTag)) {
-            $arguments = array();
+            $arguments = [];
             foreach ($definition->getArgument(0) as $k => $argument) {
                 $arguments[$k] = $argument->getValues()[0];
             }
@@ -883,7 +883,7 @@ private function addNewInstance(Definition $definition, string $return = '', str
             return $return.$this->dumpValue(new ServiceLocatorArgument($arguments)).$tail;
         }
 
-        $arguments = array();
+        $arguments = [];
         foreach ($definition->getArguments() as $value) {
             $arguments[] = $this->dumpValue($value);
         }
@@ -1157,11 +1157,11 @@ private function addInlineRequires(): string
             return '';
         }
 
-        $lineage = array();
+        $lineage = [];
 
         foreach ($this->container->findTaggedServiceIds($this->hotPathTag) as $id => $tags) {
             $definition = $this->container->getDefinition($id);
-            $inlinedDefinitions = $this->getDefinitionsFromArguments(array($definition));
+            $inlinedDefinitions = $this->getDefinitionsFromArguments([$definition]);
 
             foreach ($inlinedDefinitions as $def) {
                 if (\is_string($class = \is_array($factory = $def->getFactory()) && \is_string($factory[0]) ? $factory[0] : $def->getClass())) {
@@ -1188,14 +1188,14 @@ private function addDefaultParametersMethod(): string
             return '';
         }
 
-        $php = array();
-        $dynamicPhp = array();
+        $php = [];
+        $dynamicPhp = [];
 
         foreach ($this->container->getParameterBag()->all() as $key => $value) {
             if ($key !== $resolvedKey = $this->container->resolveEnvPlaceholders($key)) {
                 throw new InvalidArgumentException(sprintf('Parameter name cannot use env parameters: %s.', $resolvedKey));
             }
-            $export = $this->exportParameters(array($value));
+            $export = $this->exportParameters([$value]);
             $export = explode('0 => ', substr(rtrim($export, " )\n"), 7, -1), 2);
 
             if (preg_match("/\\\$this->(?:getEnv\('(?:\w++:)*+\w++'\)|targetDirs\[\d++\])/", $export[1])) {
@@ -1317,7 +1317,7 @@ protected function getDefaultParameters()
      */
     private function exportParameters(array $parameters, string $path = '', int $indent = 12): string
     {
-        $php = array();
+        $php = [];
         foreach ($parameters as $key => $value) {
             if (\is_array($value)) {
                 $value = $this->exportParameters($value, $path.'/'.$key, $indent + 4);
@@ -1375,7 +1375,7 @@ private function wrapServiceConditionals($value, string $code): string
 
     private function getServiceConditionals($value): string
     {
-        $conditions = array();
+        $conditions = [];
         foreach (ContainerBuilder::getInitializedConditionals($value) as $service) {
             if (!$this->container->hasDefinition($service)) {
                 return 'false';
@@ -1397,7 +1397,7 @@ private function getServiceConditionals($value): string
         return implode(' && ', $conditions);
     }
 
-    private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage $definitions = null, array &$calls = array()): \SplObjectStorage
+    private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage $definitions = null, array &$calls = []): \SplObjectStorage
     {
         if (null === $definitions) {
             $definitions = new \SplObjectStorage();
@@ -1410,7 +1410,7 @@ private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage
                 $id = (string) $argument;
 
                 if (!isset($calls[$id])) {
-                    $calls[$id] = array(0, $argument->getInvalidBehavior());
+                    $calls[$id] = [0, $argument->getInvalidBehavior()];
                 } else {
                     $calls[$id][1] = min($calls[$id][1], $argument->getInvalidBehavior());
                 }
@@ -1422,7 +1422,7 @@ private function getDefinitionsFromArguments(array $arguments, \SplObjectStorage
                 $definitions[$argument] = 1 + $definitions[$argument];
             } else {
                 $definitions[$argument] = 1;
-                $arguments = array($argument->getArguments(), $argument->getFactory(), $argument->getProperties(), $argument->getMethodCalls(), $argument->getConfigurator());
+                $arguments = [$argument->getArguments(), $argument->getFactory(), $argument->getProperties(), $argument->getMethodCalls(), $argument->getConfigurator()];
                 $this->getDefinitionsFromArguments($arguments, $definitions, $calls);
             }
         }
@@ -1439,14 +1439,14 @@ private function dumpValue($value, bool $interpolate = true): string
             if ($value && $interpolate && false !== $param = array_search($value, $this->container->getParameterBag()->all(), true)) {
                 return $this->dumpValue("%$param%");
             }
-            $code = array();
+            $code = [];
             foreach ($value as $k => $v) {
                 $code[] = sprintf('%s => %s', $this->dumpValue($k, $interpolate), $this->dumpValue($v, $interpolate));
             }
 
             return sprintf('array(%s)', implode(', ', $code));
         } elseif ($value instanceof ArgumentInterface) {
-            $scope = array($this->definitionVariables, $this->referenceVariables);
+            $scope = [$this->definitionVariables, $this->referenceVariables];
             $this->definitionVariables = $this->referenceVariables = null;
 
             try {
@@ -1465,14 +1465,14 @@ private function dumpValue($value, bool $interpolate = true): string
                 }
 
                 if ($value instanceof IteratorArgument) {
-                    $operands = array(0);
-                    $code = array();
+                    $operands = [0];
+                    $code = [];
                     $code[] = 'new RewindableGenerator(function () {';
 
                     if (!$values = $value->getValues()) {
                         $code[] = '            return new \EmptyIterator();';
                     } else {
-                        $countCode = array();
+                        $countCode = [];
                         $countCode[] = 'function () {';
 
                         foreach ($values as $k => $v) {
@@ -1548,7 +1548,7 @@ private function dumpValue($value, bool $interpolate = true): string
 
             return $this->getServiceCall($id, $value);
         } elseif ($value instanceof Expression) {
-            return $this->getExpressionLanguage()->compile((string) $value, array('this' => 'container'));
+            return $this->getExpressionLanguage()->compile((string) $value, ['this' => 'container']);
         } elseif ($value instanceof Parameter) {
             return $this->dumpParameter($value);
         } elseif (true === $interpolate && \is_string($value)) {
@@ -1670,8 +1670,8 @@ private function getServiceCall(string $id, Reference $reference = null): string
      */
     private function initializeMethodNamesMap(string $class)
     {
-        $this->serviceIdToMethodNameMap = array();
-        $this->usedMethodNames = array();
+        $this->serviceIdToMethodNameMap = [];
+        $this->usedMethodNames = [];
 
         if ($reflectionClass = $this->container->getReflectionClass($class)) {
             foreach ($reflectionClass->getMethods() as $method) {
@@ -1776,7 +1776,7 @@ private function isSingleUsePrivateNode(ServiceReferenceGraphNode $node): bool
         if ($node->getValue()->isPublic()) {
             return false;
         }
-        $ids = array();
+        $ids = [];
         foreach ($node->getInEdges() as $edge) {
             if (!$value = $edge->getSourceNode()->getValue()) {
                 continue;
diff --git a/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/LazyTrait.php b/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/LazyTrait.php
index d2c3431fbdc4..d387dfb4b0e5 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/LazyTrait.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/Configurator/Traits/LazyTrait.php
@@ -24,7 +24,7 @@ final public function lazy($lazy = true)
     {
         $this->definition->setLazy((bool) $lazy);
         if (\is_string($lazy)) {
-            $this->definition->addTag('proxy', array('interface' => $lazy));
+            $this->definition->addTag('proxy', ['interface' => $lazy]);
         }
 
         return $this;
diff --git a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
index bc67d1ec22fc..c5292ecf688b 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
@@ -65,7 +65,7 @@ public function load($resource, $type = null)
         try {
             $this->parseDefinitions($xml, $path, $defaults);
         } finally {
-            $this->instanceof = array();
+            $this->instanceof = [];
         }
     }
 
@@ -136,11 +136,11 @@ private function parseDefinitions(\DOMDocument $xml, $file, $defaults)
         }
         $this->setCurrentDir(\dirname($file));
 
-        $this->instanceof = array();
+        $this->instanceof = [];
         $this->isLoadingInstanceof = true;
         $instanceof = $xpath->query('//container:services/container:instanceof');
         foreach ($instanceof as $service) {
-            $this->setDefinition((string) $service->getAttribute('id'), $this->parseDefinition($service, $file, array()));
+            $this->setDefinition((string) $service->getAttribute('id'), $this->parseDefinition($service, $file, []));
         }
 
         $this->isLoadingInstanceof = false;
@@ -152,7 +152,7 @@ private function parseDefinitions(\DOMDocument $xml, $file, $defaults)
                         if (\count($excludes) > 0) {
                             throw new InvalidArgumentException('You cannot use both the attribute "exclude" and <exclude> tags at the same time.');
                         }
-                        $excludes = array($service->getAttribute('exclude'));
+                        $excludes = [$service->getAttribute('exclude')];
                     }
                     $this->registerClasses($definition, (string) $service->getAttribute('namespace'), (string) $service->getAttribute('resource'), $excludes);
                 } else {
@@ -173,12 +173,12 @@ private function getServiceDefaults(\DOMDocument $xml, $file)
         $xpath->registerNamespace('container', self::NS);
 
         if (null === $defaultsNode = $xpath->query('//container:services/container:defaults')->item(0)) {
-            return array();
+            return [];
         }
-        $defaults = array(
+        $defaults = [
             'tags' => $this->getChildren($defaultsNode, 'tag'),
             'bind' => array_map(function ($v) { return new BoundArgument($v); }, $this->getArgumentsAsPhp($defaultsNode, 'bind', $file)),
-        );
+        ];
 
         foreach ($defaults['tags'] as $tag) {
             if ('' === $tag->getAttribute('name')) {
@@ -262,10 +262,10 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                 $definition->setAutoconfigured($defaults['autoconfigure']);
             }
 
-            $definition->setChanges(array());
+            $definition->setChanges([]);
         }
 
-        foreach (array('class', 'public', 'shared', 'synthetic', 'abstract') as $key) {
+        foreach (['class', 'public', 'shared', 'synthetic', 'abstract'] as $key) {
             if ($value = $service->getAttribute($key)) {
                 $method = 'set'.$key;
                 $definition->$method($value = XmlUtils::phpize($value));
@@ -275,7 +275,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
         if ($value = $service->getAttribute('lazy')) {
             $definition->setLazy((bool) $value = XmlUtils::phpize($value));
             if (\is_string($value)) {
-                $definition->addTag('proxy', array('interface' => $value));
+                $definition->addTag('proxy', ['interface' => $value]);
             }
         }
 
@@ -313,7 +313,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                     $class = $factory->hasAttribute('class') ? $factory->getAttribute('class') : null;
                 }
 
-                $definition->setFactory(array($class, $factory->getAttribute('method')));
+                $definition->setFactory([$class, $factory->getAttribute('method')]);
             }
         }
 
@@ -328,7 +328,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
                     $class = $configurator->getAttribute('class');
                 }
 
-                $definition->setConfigurator(array($class, $configurator->getAttribute('method')));
+                $definition->setConfigurator([$class, $configurator->getAttribute('method')]);
             }
         }
 
@@ -343,7 +343,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
         }
 
         foreach ($tags as $tag) {
-            $parameters = array();
+            $parameters = [];
             foreach ($tag->attributes as $name => $node) {
                 if ('name' === $name) {
                     continue;
@@ -393,7 +393,7 @@ private function parseDefinition(\DOMElement $service, $file, array $defaults)
     private function parseFileToDOM($file)
     {
         try {
-            $dom = XmlUtils::loadFile($file, array($this, 'validateSchema'));
+            $dom = XmlUtils::loadFile($file, [$this, 'validateSchema']);
         } catch (\InvalidArgumentException $e) {
             throw new InvalidArgumentException(sprintf('Unable to parse file "%s".', $file), $e->getCode(), $e);
         }
@@ -412,7 +412,7 @@ private function parseFileToDOM($file)
      */
     private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
     {
-        $definitions = array();
+        $definitions = [];
         $count = 0;
         $suffix = '~'.ContainerBuilder::hash($file);
 
@@ -428,7 +428,7 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
                     $node->setAttribute('id', $id);
                     $node->setAttribute('service', $id);
 
-                    $definitions[$id] = array($services[0], $file);
+                    $definitions[$id] = [$services[0], $file];
                     $services[0]->setAttribute('id', $id);
 
                     // anonymous services are always private
@@ -448,7 +448,7 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
         // resolve definitions
         uksort($definitions, 'strnatcmp');
         foreach (array_reverse($definitions) as $id => list($domElement, $file)) {
-            if (null !== $definition = $this->parseDefinition($domElement, $file, array())) {
+            if (null !== $definition = $this->parseDefinition($domElement, $file, [])) {
                 $this->setDefinition($id, $definition);
             }
         }
@@ -466,7 +466,7 @@ private function processAnonymousServices(\DOMDocument $xml, $file, $defaults)
      */
     private function getArgumentsAsPhp(\DOME
B41A
lement $node, $name, $file, $lowercase = true, $isChildDefinition = false)
     {
-        $arguments = array();
+        $arguments = [];
         foreach ($this->getChildren($node, $name) as $arg) {
             if ($arg->hasAttribute('name')) {
                 $arg->setAttribute('key', $arg->getAttribute('name'));
@@ -565,7 +565,7 @@ private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase =
      */
     private function getChildren(\DOMNode $node, $name)
     {
-        $children = array();
+        $children = [];
         foreach ($node->childNodes as $child) {
             if ($child instanceof \DOMElement && $child->localName === $name && self::NS === $child->namespaceURI) {
                 $children[] = $child;
@@ -586,7 +586,7 @@ private function getChildren(\DOMNode $node, $name)
      */
     public function validateSchema(\DOMDocument $dom)
     {
-        $schemaLocations = array('http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd'));
+        $schemaLocations = ['http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd')];
 
         if ($element = $dom->documentElement->getAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'schemaLocation')) {
             $items = preg_split('/\s+/', $element);
@@ -607,7 +607,7 @@ public function validateSchema(\DOMDocument $dom)
             }
         }
 
-        $tmpfiles = array();
+        $tmpfiles = [];
         $imports = '';
         foreach ($schemaLocations as $namespace => $location) {
             $parts = explode('/', $location);
@@ -662,7 +662,7 @@ public function validateSchema(\DOMDocument $dom)
     private function validateAlias(\DOMElement $alias, $file)
     {
         foreach ($alias->attributes as $name => $node) {
-            if (!\in_array($name, array('alias', 'id', 'public'))) {
+            if (!\in_array($name, ['alias', 'id', 'public'])) {
                 throw new InvalidArgumentException(sprintf('Invalid attribute "%s" defined for alias "%s" in "%s".', $name, $alias->getAttribute('id'), $file));
             }
         }
@@ -711,7 +711,7 @@ private function loadFromExtensions(\DOMDocument $xml)
 
             $values = static::convertDomElementToArray($node);
             if (!\is_array($values)) {
-                $values = array();
+                $values = [];
             }
 
             $this->container->loadFromExtension($node->namespaceURI, $values);
diff --git a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
index e286d27952d4..05fbe86363a9 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
@@ -38,7 +38,7 @@
  */
 class YamlFileLoader extends FileLoader
 {
-    private static $serviceKeywords = array(
+    private static $serviceKeywords = [
         'alias' => 'alias',
         'parent' => 'parent',
         'class' => 'class',
@@ -61,9 +61,9 @@ class YamlFileLoader extends FileLoader
         'autowire' => 'autowire',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
-    private static $prototypeKeywords = array(
+    private static $prototypeKeywords = [
         'resource' => 'resource',
         'namespace' => 'namespace',
         'exclude' => 'exclude',
@@ -82,9 +82,9 @@ class YamlFileLoader extends FileLoader
         'autowire' => 'autowire',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
-    private static $instanceofKeywords = array(
+    private static $instanceofKeywords = [
         'shared' => 'shared',
         'lazy' => 'lazy',
         'public' => 'public',
@@ -94,15 +94,15 @@ class YamlFileLoader extends FileLoader
         'tags' => 'tags',
         'autowire' => 'autowire',
         'bind' => 'bind',
-    );
+    ];
 
-    private static $defaultsKeywords = array(
+    private static $defaultsKeywords = [
         'public' => 'public',
         'tags' => 'tags',
         'autowire' => 'autowire',
         'autoconfigure' => 'autoconfigure',
         'bind' => 'bind',
-    );
+    ];
 
     private $yamlParser;
 
@@ -149,7 +149,7 @@ public function load($resource, $type = null)
         try {
             $this->parseDefinitions($content, $path);
         } finally {
-            $this->instanceof = array();
+            $this->instanceof = [];
         }
     }
 
@@ -162,11 +162,11 @@ public function supports($resource, $type = null)
             return false;
         }
 
-        if (null === $type && \in_array(pathinfo($resource, PATHINFO_EXTENSION), array('yaml', 'yml'), true)) {
+        if (null === $type && \in_array(pathinfo($resource, PATHINFO_EXTENSION), ['yaml', 'yml'], true)) {
             return true;
         }
 
-        return \in_array($type, array('yaml', 'yml'), true);
+        return \in_array($type, ['yaml', 'yml'], true);
     }
 
     private function parseImports(array $content, string $file)
@@ -182,7 +182,7 @@ private function parseImports(array $content, string $file)
         $defaultDirectory = \dirname($file);
         foreach ($content['imports'] as $import) {
             if (!\is_array($import)) {
-                $import = array('resource' => $import);
+                $import = ['resource' => $import];
             }
             if (!isset($import['resource'])) {
                 throw new InvalidArgumentException(sprintf('An import should provide a resource in %s. Check your YAML syntax.', $file));
@@ -210,7 +210,7 @@ private function parseDefinitions(array $content, string $file)
             if (!\is_array($instanceof)) {
                 throw new InvalidArgumentException(sprintf('Service "_instanceof" key must be an array, "%s" given in "%s".', \gettype($instanceof), $file));
             }
-            $this->instanceof = array();
+            $this->instanceof = [];
             $this->isLoadingInstanceof = true;
             foreach ($instanceof as $id => $service) {
                 if (!$service || !\is_array($service)) {
@@ -219,7 +219,7 @@ private function parseDefinitions(array $content, string $file)
                 if (\is_string($service) && 0 === strpos($service, '@')) {
                     throw new InvalidArgumentException(sprintf('Type definition "%s" cannot be an alias within "_instanceof" in %s. Check your YAML syntax.', $id, $file));
                 }
-                $this->parseDefinition($id, $service, $file, array());
+                $this->parseDefinition($id, $service, $file, []);
             }
         }
 
@@ -236,7 +236,7 @@ private function parseDefinitions(array $content, string $file)
     private function parseDefaults(array &$content, string $file): array
     {
         if (!array_key_exists('_defaults', $content['services'])) {
-            return array();
+            return [];
         }
         $defaults = $content['services']['_defaults'];
         unset($content['services']['_defaults']);
@@ -258,7 +258,7 @@ private function parseDefaults(array &$content, string $file): array
 
             foreach ($tags as $tag) {
                 if (!\is_array($tag)) {
-                    $tag = array('name' => $tag);
+                    $tag = ['name' => $tag];
                 }
 
                 if (!isset($tag['name'])) {
@@ -327,11 +327,11 @@ private function parseDefinition($id, $service, $file, array $defaults)
         }
 
         if (\is_array($service) && $this->isUsingShortSyntax($service)) {
-            $service = array('arguments' => $service);
+            $service = ['arguments' => $service];
         }
 
         if (null === $service) {
-            $service = array();
+            $service = [];
         }
 
         if (!\is_array($service)) {
@@ -349,7 +349,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
             }
 
             foreach ($service as $key => $value) {
-                if (!\in_array($key, array('alias', 'public'))) {
+                if (!\in_array($key, ['alias', 'public'])) {
                     throw new InvalidArgumentException(sprintf('The configuration key "%s" is unsupported for the service "%s" which is defined as an alias in "%s". Allowed configuration keys for service aliases are "alias" and "public".', $key, $id, $file));
                 }
             }
@@ -396,7 +396,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
                 $definition->setAutoconfigured($defaults['autoconfigure']);
             }
 
-            $definition->setChanges(array());
+            $definition->setChanges([]);
         }
 
         if (isset($service['class'])) {
@@ -414,7 +414,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
         if (isset($service['lazy'])) {
             $definition->setLazy((bool) $service['lazy']);
             if (\is_string($service['lazy'])) {
-                $definition->addTag('proxy', array('interface' => $service['lazy']));
+                $definition->addTag('proxy', ['interface' => $service['lazy']]);
             }
         }
 
@@ -458,10 +458,10 @@ private function parseDefinition($id, $service, $file, array $defaults)
             foreach ($service['calls'] as $call) {
                 if (isset($call['method'])) {
                     $method = $call['method'];
-                    $args = isset($call['arguments']) ? $this->resolveServices($call['arguments'], $file) : array();
+                    $args = isset($call['arguments']) ? $this->resolveServices($call['arguments'], $file) : [];
                 } else {
                     $method = $call[0];
-                    $args = isset($call[1]) ? $this->resolveServices($call[1], $file) : array();
+                    $args = isset($call[1]) ? $this->resolveServices($call[1], $file) : [];
                 }
 
                 if (!\is_array($args)) {
@@ -471,7 +471,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
             }
         }
 
-        $tags = isset($service['tags']) ? $service['tags'] : array();
+        $tags = isset($service['tags']) ? $service['tags'] : [];
         if (!\is_array($tags)) {
             throw new InvalidArgumentException(sprintf('Parameter "tags" must be an array for service "%s" in %s. Check your YAML syntax.', $id, $file));
         }
@@ -482,7 +482,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
 
         foreach ($tags as $tag) {
             if (!\is_array($tag)) {
-                $tag = array('name' => $tag);
+                $tag = ['name' => $tag];
             }
 
             if (!isset($tag['name'])) {
@@ -520,7 +520,7 @@ private function parseDefinition($id, $service, $file, array $defaults)
 
         if (isset($defaults['bind']) || isset($service['bind'])) {
             // deep clone, to avoid multiple process of the same instance in the passes
-            $bindings = isset($defaults['bind']) ? unserialize(serialize($defaults['bind'])) : array();
+            $bindings = isset($defaults['bind']) ? unserialize(serialize($defaults['bind'])) : [];
 
             if (isset($service['bind'])) {
                 if (!\is_array($service['bind'])) {
@@ -579,7 +579,7 @@ private function parseCallable($callable, $parameter, $id, $file)
             if (false !== strpos($callable, ':') && false === strpos($callable, '::')) {
                 $parts = explode(':', $callable);
 
-                return array($this->resolveServices('@'.$parts[0], $file), $parts[1]);
+                return [$this->resolveServices('@'.$parts[0], $file), $parts[1]];
             }
 
             return $callable;
@@ -587,7 +587,7 @@ private function parseCallable($callable, $parameter, $id, $file)
 
         if (\is_array($callable)) {
             if (isset($callable[0]) && isset($callable[1])) {
-                return array($this->resolveServices($callable[0], $file), $callable[1]);
+                return [$this->resolveServices($callable[0], $file), $callable[1]];
             }
 
             if ('factory' === $parameter && isset($callable[1]) && null === $callable[0]) {
@@ -657,7 +657,7 @@ private function validate($content, $file)
         }
 
         foreach ($content as $namespace => $data) {
-            if (\in_array($namespace, array('imports', 'parameters', 'services'))) {
+            if (\in_array($namespace, ['imports', 'parameters', 'services'])) {
                 continue;
             }
 
@@ -720,10 +720,10 @@ private function resolveServices($value, $file, $isParameter = false)
                 $isLoadingInstanceof = $this->isLoadingInstanceof;
                 $this->isLoadingInstanceof = false;
                 $instanceof = $this->instanceof;
-                $this->instanceof = array();
+                $this->instanceof = [];
 
                 $id = sprintf('.%d_%s', ++$this->anonymousServicesCount, preg_replace('/^.*\\\\/', '', isset($argument['class']) ? $argument['class'] : '').$this->anonymousServicesSuffix);
-                $this->parseDefinition($id, $argument, $file, array());
+                $this->parseDefinition($id, $argument, $file, []);
 
                 if (!$this->container->hasDefinition($id)) {
                     throw new InvalidArgumentException(sprintf('Creating an alias using the tag "!service" is not allowed in "%s".', $file));
@@ -779,12 +779,12 @@ private function resolveServices($value, $file, $isParameter = false)
     private function loadFromExtensions(array $content)
     {
         foreach ($content as $namespace => $values) {
-            if (\in_array($namespace, array('imports', 'parameters', 'services'))) {
+            if (\in_array($namespace, ['imports', 'parameters', 'services'])) {
                 continue;
             }
 
             if (!\is_array($values) && null !== $values) {
-                $values = array();
+                $values = [];
             }
 
             $this->container->loadFromExtension($namespace, $values);
diff --git a/src/Symfony/Component/DependencyInjection/ServiceLocator.php b/src/Symfony/Component/DependencyInjection/ServiceLocator.php
index 9261c6546f5e..45a352413563 100644
--- a/src/Symfony/Component/DependencyInjection/ServiceLocator.php
+++ b/src/Symfony/Component/DependencyInjection/ServiceLocator.php
@@ -79,14 +79,14 @@ private function createNotFoundException(string $id): NotFoundExceptionInterface
         if ($this->loading) {
             $msg = sprintf('The service "%s" has a dependency on a non-existent service "%s". This locator %s', end($this->loading), $id, $this->formatAlternatives());
 
-            return new ServiceNotFoundException($id, end($this->loading) ?: null, null, array(), $msg);
+            return new ServiceNotFoundException($id, end($this->loading) ?: null, null, [], $msg);
         }
 
         $class = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT | DEBUG_BACKTRACE_IGNORE_ARGS, 4);
         $class = isset($class[3]['object']) ? \get_class($class[3]['object']) : null;
         $externalId = $this->externalId ?: $class;
 
-        $msg = array();
+        $msg = [];
         $msg[] = sprintf('Service "%s" not found:', $id);
 
         if (!$this->container) {
@@ -119,7 +119,7 @@ private function createNotFoundException(string $id): NotFoundExceptionInterface
             $msg[] = 'Try using dependency injection instead.';
         }
 
-        return new ServiceNotFoundException($id, end($this->loading) ?: null, null, array(), implode(' ', $msg));
+        return new ServiceNotFoundException($id, end($this->loading) ?: null, null, [], implode(' ', $msg));
     }
 
     private function createCircularReferenceException(string $id, array $path): ContainerExceptionInterface
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php
index 3cf23aa11950..48c3df595c3d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php
@@ -31,7 +31,7 @@ public function testProcess()
 
         $b = $container
             ->register('b')
-            ->addMethodCall('setA', array($ref2 = new Reference('a')))
+            ->addMethodCall('setA', [$ref2 = new Reference('a')])
         ;
 
         $c = $container
@@ -47,7 +47,7 @@ public function testProcess()
 
         $e = $container
             ->register('e')
-            ->setConfigurator(array($ref6 = new Reference('b'), 'methodName'))
+            ->setConfigurator([$ref6 = new Reference('b'), 'methodName'])
         ;
 
         $graph = $this->process($container);
@@ -93,7 +93,7 @@ public function testProcessMarksEdgesLazyWhenReferencedFromIteratorArgument()
         $container
             ->register('c')
             ->addArgument($ref1 = new Reference('a'))
-            ->addArgument(new IteratorArgument(array($ref2 = new Reference('b'))))
+            ->addArgument(new IteratorArgument([$ref2 = new Reference('b')]))
         ;
 
         $graph = $this->process($container);
@@ -118,7 +118,7 @@ public function testProcessDetectsReferencesFromInlinedDefinitions()
 
         $container
             ->register('b')
-            ->addArgument(new Definition(null, array($ref = new Reference('a'))))
+            ->addArgument(new Definition(null, [$ref = new Reference('a')]))
         ;
 
         $graph = $this->process($container);
@@ -137,7 +137,7 @@ public function testProcessDetectsReferencesFromIteratorArguments()
 
         $container
             ->register('b')
-            ->addArgument(new IteratorArgument(array($ref = new Reference('a'))))
+            ->addArgument(new IteratorArgument([$ref = new Reference('a')]))
         ;
 
         $graph = $this->process($container);
@@ -155,7 +155,7 @@ public function testProcessDetectsReferencesFromInlinedFactoryDefinitions()
         ;
 
         $factory = new Definition();
-        $factory->setFactory(array(new Reference('a'), 'a'));
+        $factory->setFactory([new Reference('a'), 'a']);
 
         $container
             ->register('b')
@@ -177,8 +177,8 @@ public function testProcessDoesNotSaveDuplicateReferences()
         ;
         $container
             ->register('b')
-            ->addArgument(new Definition(null, array($ref1 = new Reference('a'))))
-            ->addArgument(new Definition(null, array($ref2 = new Reference('a'))))
+            ->addArgument(new Definition(null, [$ref1 = new Reference('a')]))
+            ->addArgument(new Definition(null, [$ref2 = new Reference('a')]))
         ;
 
         $graph = $this->process($container);
@@ -192,11 +192,11 @@ public function testProcessDetectsFactoryReferences()
 
         $container
             ->register('foo', 'stdClass')
-            ->setFactory(array('stdClass', 'getInstance'));
+            ->setFactory(['stdClass', 'getInstance']);
 
         $container
             ->register('bar', 'stdClass')
-            ->setFactory(array(new Reference('foo'), 'getInstance'));
+            ->setFactory([new Reference('foo'), 'getInstance']);
 
         $graph = $this->process($container);
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
index eacdefbdcfdc..558d6412a85c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
@@ -924,12 +924,12 @@ public function testNamedArgumentAliasResolveCollisions()
 
         $pass->process($container);
 
-        $expected = array(
-            array(
+        $expected = [
+            [
                 'setMultipleInstancesForOneArg',
-                array(new TypedReference(CollisionInterface::class.' $collision', CollisionInterface::class)),
-            ),
-        );
+                [new TypedReference(CollisionInterface::class.' $collision', CollisionInterface::class)],
+            ],
+        ];
         $this->assertEquals($expected, $container->getDefinition('setter_injection_collision')->getMethodCalls());
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php
index 3cef020f30b9..baedabf8d4a5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php
@@ -93,7 +93,7 @@ public function testWithErroredServiceLocator()
     {
         $container = new ContainerBuilder();
 
-        ServiceLocatorTagPass::register($container, array('foo' => new Reference('baz')), 'bar');
+        ServiceLocatorTagPass::register($container, ['foo' => new Reference('baz')], 'bar');
 
         (new AnalyzeServiceReferencesPass())->process($container);
         (new InlineServiceDefinitionsPass())->process($container);
@@ -108,7 +108,7 @@ public function testWithErroredHiddenService()
     {
         $container = new ContainerBuilder();
 
-        ServiceLocatorTagPass::register($container, array('foo' => new Reference('foo')), 'bar');
+        ServiceLocatorTagPass::register($container, ['foo' => new Reference('foo')], 'bar');
 
         (new AnalyzeServiceReferencesPass())->process($container);
         (new InlineServiceDefinitionsPass())->process($container);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CustomExpressionLanguageFunctionTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CustomExpressionLanguageFunctionTest.php
index ead0a4207aef..13e898a867db 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/CustomExpressionLanguageFunctionTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/CustomExpressionLanguageFunctionTest.php
@@ -16,14 +16,14 @@ public function testDump()
         $container = new ContainerBuilder();
         $container->register('test', 'stdClass')
             ->setPublic(true)
-            ->setArguments(array(new Expression('custom_func("foobar")')));
+            ->setArguments([new Expression('custom_func("foobar")')]);
 
         $container->addExpressionLanguageProvider(new class() implements ExpressionFunctionProviderInterface {
             public function getFunctions()
             {
-                return array(
+                return [
                     ExpressionFunction::fromPhp('strtolower', 'custom_func'),
-                );
+                ];
             }
         });
         $container->compile();
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
index 595beb7e9767..61df0ebfa5c0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
@@ -32,7 +32,7 @@ public function testProcess()
 
         $container
             ->register('service')
-            ->setArguments(array(new Reference('inlinable.service')))
+            ->setArguments([new Reference('inlinable.service')])
         ;
 
         $this->process($container);
@@ -54,7 +54,7 @@ public function testProcessDoesNotInlinesWhenAliasedServiceIsShared()
 
         $container
             ->register('service')
-            ->setArguments(array($ref = new Reference('foo')))
+            ->setArguments([$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -79,7 +79,7 @@ public function testProcessDoesInlineNonSharedService()
 
         $container
             ->register('service')
-            ->setArguments(array(new Reference('foo'), $ref = new Reference('moo'), new Reference('bar')))
+            ->setArguments([new Reference('foo'), $ref = new Reference('moo'), new Reference('bar')])
         ;
 
         $this->process($container);
@@ -104,7 +104,7 @@ public function testProcessDoesNotInlineMixedServicesLoop()
         $container
             ->register('bar')
             ->setPublic(false)
-            ->addMethodCall('setFoo', array(new Reference('foo')))
+            ->addMethodCall('setFoo', [new Reference('foo')])
         ;
 
         $this->process($container);
@@ -127,7 +127,7 @@ public function testProcessThrowsOnNonSharedLoops()
         $container
             ->register('bar')
             ->setShared(false)
-            ->addMethodCall('setFoo', array(new Reference('foo')))
+            ->addMethodCall('setFoo', [new Reference('foo')])
         ;
 
         $this->process($container);
@@ -174,7 +174,7 @@ public function testProcessInlinesIfMultipleReferencesButAllFromTheSameDefinitio
         $b = $container
             ->register('b')
             ->addArgument(new Reference('a'))
-            ->addArgument(new Definition(null, array(new Reference('a'))))
+            ->addArgument(new Definition(null, [new Reference('a')]))
         ;
 
         $this->process($container);
@@ -194,14 +194,14 @@ public function testProcessInlinesPrivateFactoryReference()
         $b = $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                 $ref = new Reference('b'),
-            ));
+            ]);
 
         $this->process($container);
 
@@ -218,15 +218,15 @@ public function testProcessDoesNotInlinePrivateFactoryIfReferencedMultipleTimesW
         $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                     $ref1 = new Reference('b'),
                     $ref2 = new Reference('b'),
-                ))
+                ])
         ;
         $this->process($container);
 
@@ -244,19 +244,19 @@ public function testProcessDoesNotInlineReferenceWhenUsedByInlineFactory()
         $container
             ->register('b')
             ->setPublic(false)
-            ->setFactory(array(new Reference('a'), 'a'))
+            ->setFactory([new Reference('a'), 'a'])
         ;
 
         $inlineFactory = new Definition();
         $inlineFactory->setPublic(false);
-        $inlineFactory->setFactory(array(new Reference('b'), 'b'));
+        $inlineFactory->setFactory([new Reference('b'), 'b']);
 
         $container
             ->register('foo')
-            ->setArguments(array(
+            ->setArguments([
                     $ref = new Reference('b'),
                     $inlineFactory,
-                ))
+                ])
         ;
         $this->process($container);
 
@@ -275,7 +275,7 @@ public function testProcessDoesNotInlineWhenServiceIsPrivateButLazy()
 
         $container
             ->register('service')
-            ->setArguments(array($ref = new Reference('foo')))
+            ->setArguments([$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -290,7 +290,7 @@ public function testProcessDoesNotInlineWhenServiceReferencesItself()
         $container
             ->register('foo')
             ->setPublic(false)
-            ->addMethodCall('foo', array($ref = new Reference('foo')))
+            ->addMethodCall('foo', [$ref = new Reference('foo')])
         ;
 
         $this->process($container);
@@ -308,11 +308,11 @@ public function testProcessDoesNotSetLazyArgumentValuesAfterInlining()
         ;
         $container
             ->register('service-closure')
-            ->setArguments(array(new ServiceClosureArgument(new Reference('inline'))))
+            ->setArguments([new ServiceClosureArgument(new Reference('inline'))])
         ;
         $container
             ->register('iterator')
-            ->setArguments(array(new IteratorArgument(array(new Reference('inline')))))
+            ->setArguments([new IteratorArgument([new Reference('inline')])])
         ;
 
         $this->process($container);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
index 4681092ca784..ff938ce01b39 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
@@ -28,20 +28,20 @@ public function testSimpleProcessor()
         $this->assertTrue($container->has('container.env_var_processors_locator'));
         $this->assertInstanceOf(SimpleProcessor::class, $container->get('container.env_var_processors_locator')->get('foo'));
 
-        $expected = array(
-            'foo' => array('string'),
-            'base64' => array('string'),
-            'bool' => array('bool'),
-            'const' => array('bool', 'int', 'float', 'string', 'array'),
-            'csv' => array('array'),
-            'file' => array('string'),
-            'float' => array('float'),
-            'int' => array('int'),
-            'json' => array('array'),
-            'key' => array('bool', 'int', 'float', 'string', 'array'),
-            'resolve' => array('string'),
-            'string' => array('string'),
-        );
+        $expected = [
+            'foo' => ['string'],
+            'base64' => ['string'],
+            'bool' => ['bool'],
+            'const' => ['bool', 'int', 'float', 'string', 'array'],
+            'csv' => ['array'],
+            'file' => ['string'],
+            'float' => ['float'],
+            'int' => ['int'],
+            'json' => ['array'],
+            'key' => ['bool', 'int', 'float', 'string', 'array'],
+            'resolve' => ['string'],
+            'string' => ['string'],
+        ];
 
         $this->assertSame($expected, $container->getParameterBag()->getProvidedTypes());
     }
@@ -77,7 +77,7 @@ public function getEnv($prefix, $name, \Closure $getEnv)
 
     public static function getProvidedTypes()
     {
-        return array('foo' => 'string');
+        return ['foo' => 'string'];
     }
 }
 
@@ -85,6 +85,6 @@ class BadProcessor extends SimpleProcessor
 {
     public static function getProvidedTypes()
     {
-        return array('foo' => 'string|foo');
+        return ['foo' => 'string|foo'];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
index d520c69cca68..e501d1fca386 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterServiceSubscribersPassTest.php
@@ -61,7 +61,7 @@ public function testInvalidAttributes()
         $container = new ContainerBuilder();
 
         $container->register('foo', TestServiceSubscriber::class)
-            ->addTag('container.service_subscriber', array('bar' => '123'))
+            ->addTag('container.service_subscriber', ['bar' => '123'])
         ;
 
         (new RegisterServiceSubscribersPass())->process($container);
@@ -86,12 +86,12 @@ public function testNoAttributes()
         $this->assertFalse($locator->isPublic());
         $this->assertSame(ServiceLocator::class, $locator->getClass());
 
-        $expected = array(
+        $expected = [
             TestServiceSubscriber::class => new ServiceClosureArgument(new TypedReference(TestServiceSubscriber::class, TestServiceSubscriber::class)),
             CustomDefinition::class => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             'bar' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, 'bar')),
             'baz' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE, 'baz')),
-        );
+        ];
 
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
@@ -103,8 +103,8 @@ public function testWithAttributes()
         $container->register('foo', TestServiceSubscriber::class)
             ->setAutowired(true)
             ->addArgument(new Reference(PsrContainerInterface::class))
-            ->addTag('container.service_subscriber', array('key' => 'bar', 'id' => 'bar'))
-            ->addTag('container.service_subscriber', array('key' => 'bar', 'id' => 'baz')) // should be ignored: the first wins
+            ->addTag('container.service_subscriber', ['key' => 'bar', 'id' => 'bar'])
+            ->addTag('container.service_subscriber', ['key' => 'bar', 'id' => 'baz']) // should be ignored: the first wins
         ;
 
         (new RegisterServiceSubscribersPass())->process($container);
@@ -116,12 +116,12 @@ public function testWithAttributes()
         $this->assertFalse($locator->isPublic());
         $this->assertSame(ServiceLocator::class, $locator->getClass());
 
-        $expected = array(
+        $expected = [
             TestServiceSubscriber::class => new ServiceClosureArgument(new TypedReference(TestServiceSubscriber::class, TestServiceSubscriber::class)),
             CustomDefinition::class => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             'bar' => new ServiceClosureArgument(new TypedReference('bar', CustomDefinition::class, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, 'bar')),
             'baz' => new ServiceClosureArgument(new TypedReference(CustomDefinition::class, CustomDefinition::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE, 'baz')),
-        );
+        ];
 
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
@@ -136,10 +136,10 @@ public function testExtraServiceSubscriber()
         $container->register('foo_service', TestServiceSubscriber::class)
             ->setAutowired(true)
             ->addArgument(new Reference(PsrContainerInterface::class))
-            ->addTag('container.service_subscriber', array(
+            ->addTag('container.service_subscriber', [
                 'key' => 'test',
                 'id' => TestServiceSubscriber::class,
-            ))
+            ])
         ;
         $container->register(TestServiceSubscriber::class, TestServiceSubscriber::class);
         $container->compile();
@@ -150,7 +150,7 @@ public function testServiceSubscriberTrait()
         $container = new ContainerBuilder();
 
         $container->register('foo', TestServiceSubscriberChild::class)
-            ->addMethodCall('setContainer', array(new Reference(PsrContainerInterface::class)))
+            ->addMethodCall('setContainer', [new Reference(PsrContainerInterface::class)])
             ->addTag('container.service_subscriber')
         ;
 
@@ -160,12 +160,12 @@ public function testServiceSubscriberTrait()
         $foo = $container->getDefinition('foo');
         $locator = $container->getDefinition((string) $foo->getMethodCalls()[0][1][0]);
 
-        $expected = array(
+        $expected = [
             TestServiceSubscriberChild::class.'::invalidDefinition' => new ServiceClosureArgument(new TypedReference('Symfony\Component\DependencyInjection\Tests\Fixtures\InvalidDefinition', 'Symfony\Component\DependencyInjection\Tests\Fixtures\InvalidDefinition', ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             TestServiceSubscriberChild::class.'::testDefinition2' => new ServiceClosureArgument(new TypedReference(TestDefinition2::class, TestDefinition2::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             TestServiceSubscriberChild::class.'::testDefinition3' => new ServiceClosureArgument(new TypedReference(TestDefinition3::class, TestDefinition3::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
             TestServiceSubscriberParent::class.'::testDefinition1' => new ServiceClosureArgument(new TypedReference(TestDefinition1::class, TestDefinition1::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)),
-        );
+        ];
 
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
@@ -182,7 +182,7 @@ public function getFoo(): \stdClass
             }
         };
         $container->register('foo', \get_class($subscriber))
-            ->addMethodCall('setContainer', array(new Reference(PsrContainerInterface::class)))
+            ->addMethodCall('setContainer', [new Reference(PsrContainerInterface::class)])
             ->addTag('container.service_subscriber');
 
         (new RegisterServiceSubscribersPass())->process($container);
@@ -191,9 +191,9 @@ public function getFoo(): \stdClass
         $foo = $container->getDefinition('foo');
         $locator = $container->getDefinition((string) $foo->getMethodCalls()[0][1][0]);
 
-        $expected = array(
+        $expected = [
             \get_class($subscriber).'::getFoo' => new ServiceClosureArgument(new TypedReference('stdClass', 'stdClass', ContainerInterface::IGNORE_ON_INVALID_REFERENCE, 'foo')),
-        );
+        ];
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
 
@@ -204,11 +204,11 @@ public function testServiceSubscriberWithSemanticId()
         $subscriber = new class() implements ServiceSubscriberInterface {
             public static function getSubscribedServices()
             {
-                return array(
+                return [
                     'some.service' => 'stdClass',
                     'some_service' => 'stdClass',
                     'another_service' => 'stdClass',
-                );
+                ];
             }
         };
         $container->register('some.service', 'stdClass');
@@ -216,7 +216,7 @@ public static function getSubscribedServices()
         $container->setAlias('stdClass $some_service', 'some.service');
         $container->setAlias('stdClass $anotherService', 'some.service');
         $container->register('foo', \get_class($subscriber))
-            ->addMethodCall('setContainer', array(new Reference(PsrContainerInterface::class)))
+            ->addMethodCall('setContainer', [new Reference(PsrContainerInterface::class)])
             ->addTag('container.service_subscriber');
 
         (new RegisterServiceSubscribersPass())->process($container);
@@ -225,20 +225,20 @@ public static function getSubscribedServices()
         $foo = $container->getDefinition('foo');
         $locator = $container->getDefinition((string) $foo->getMethodCalls()[0][1][0]);
 
-        $expected = array(
+        $expected = [
             'some.service' => new ServiceClosureArgument(new TypedReference('stdClass', 'stdClass', ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, 'some.service')),
             'some_service' => new ServiceClosureArgument(new TypedReference('stdClass', 'stdClass', ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, 'some_service')),
             'another_service' => new ServiceClosureArgument(new TypedReference('stdClass', 'stdClass', ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, 'anotherService')),
-        );
+        ];
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
 
         (new AutowirePass())->process($container);
 
-        $expected = array(
+        $expected = [
             'some.service' => new ServiceClosureArgument(new TypedReference('some.service', 'stdClass')),
             'some_service' => new ServiceClosureArgument(new TypedReference('stdClass $some_service', 'stdClass')),
             'another_service' => new ServiceClosureArgument(new TypedReference('stdClass $anotherService', 'stdClass')),
-        );
+        ];
         $this->assertEquals($expected, $container->getDefinition((string) $locator->getFactory()[0])->getArgument(0));
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php
index 48b313958955..8b92a33e23f6 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php
@@ -33,7 +33,7 @@ public function testProcess()
         ;
         $container
             ->register('moo')
-            ->setArguments(array(new Reference('bar')))
+            ->setArguments([new Reference('bar')])
         ;
 
         $this->process($container);
@@ -52,7 +52,7 @@ public function testProcessRemovesUnusedDefinitionsRecursively()
         ;
         $container
             ->register('bar')
-            ->setArguments(array(new Reference('foo')))
+            ->setArguments([new Reference('foo')])
             ->setPublic(false)
         ;
 
@@ -71,7 +71,7 @@ public function testProcessWorksWithInlinedDefinitions()
         ;
         $container
             ->register('bar')
-            ->setArguments(array(new Definition(null, array(new Reference('foo')))))
+            ->setArguments([new Definition(null, [new Reference('foo')])])
         ;
 
         $this->process($container);
@@ -86,12 +86,12 @@ public function testProcessWontRemovePrivateFactory()
 
         $container
             ->register('foo', 'stdClass')
-            ->setFactory(array('stdClass', 'getInstance'))
+            ->setFactory(['stdClass', 'getInstance'])
             ->setPublic(false);
 
         $container
             ->register('bar', 'stdClass')
-            ->setFactory(array(new Reference('foo'), 'getInstance'))
+            ->setFactory([new Reference('foo'), 'getInstance'])
             ->setPublic(false);
 
         $container
@@ -111,7 +111,7 @@ public function testProcessConsiderEnvVariablesAsUsedEvenInPrivateServices()
         $container->setParameter('env(FOOBAR)', 'test');
         $container
             ->register('foo')
-            ->setArguments(array('%env(FOOBAR)%'))
+            ->setArguments(['%env(FOOBAR)%'])
             ->setPublic(false)
         ;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
index 8d29a2b43cd6..43dcb4f8f162 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveBindingsPassTest.php
@@ -116,10 +116,10 @@ public function testTupleBinding()
     {
         $container = new ContainerBuilder();
 
-        $bindings = array(
+        $bindings = [
             '$c' => new BoundArgument(new Reference('bar')),
             CaseSensitiveClass::class.'$c' => new BoundArgument(new Reference('foo')),
-        );
+        ];
 
         $definition = $container->register(NamedArgumentsDummy::class, NamedArgumentsDummy::class);
         $definition->addMethodCall('setSensitiveClass');
@@ -129,10 +129,10 @@ public function testTupleBinding()
         $pass = new ResolveBindingsPass();
         $pass->process($container);
 
-        $expected = array(
-            array('setSensitiveClass', array(new Reference('foo'))),
-            array('setAnotherC', array(new Reference('bar'))),
-        );
+        $expected = [
+            ['setSensitiveClass', [new Reference('foo')]],
+            ['setAnotherC', [new Reference('bar')]],
+        ];
         $this->assertEquals($expected, $definition->getMethodCalls());
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
index d6f2d6b7899d..88cc88b9dc29 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
@@ -276,21 +276,21 @@ public function testProcessForAutoconfiguredBindings()
         $container = new ContainerBuilder();
 
         $container->registerForAutoconfiguration(self::class)
-            ->setBindings(array(
+            ->setBindings([
                 '$foo' => new BoundArgument(234, false),
                 parent::class => new BoundArgument(new Reference('foo'), false),
-            ));
+            ]);
 
         $container->register('foo', self::class)
             ->setAutoconfigured(true)
-            ->setBindings(array('$foo' => new BoundArgument(123, false)));
+            ->setBindings(['$foo' => new BoundArgument(123, false)]);
 
         (new ResolveInstanceofConditionalsPass())->process($container);
 
-        $expected = array(
+        $expected = [
           
F438
  '$foo' => new BoundArgument(123, false),
             parent::class => new BoundArgument(new Reference('foo'), false),
-        );
+        ];
         $this->assertEquals($expected, $container->findDefinition('foo')->getBindings());
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ServiceLocatorTagPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ServiceLocatorTagPassTest.php
index 5157e84acf3d..d7e5586e0ab0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ServiceLocatorTagPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ServiceLocatorTagPassTest.php
@@ -48,9 +48,9 @@ public function testInvalidServices()
         $container = new ContainerBuilder();
 
         $container->register('foo', ServiceLocator::class)
-            ->setArguments(array(array(
+            ->setArguments([[
                 'dummy',
-            )))
+            ]])
             ->addTag('container.service_locator')
         ;
 
@@ -65,11 +65,11 @@ public function testProcessValue()
         $container->register('baz', CustomDefinition::class);
 
         $container->register('foo', ServiceLocator::class)
-            ->setArguments(array(array(
+            ->setArguments([[
                 new Reference('bar'),
                 new Reference('baz'),
                 'some.service' => new Reference('bar'),
-            )))
+            ]])
             ->addTag('container.service_locator')
         ;
 
@@ -91,10 +91,10 @@ public function testServiceWithKeyOverwritesPreviousInheritedKey()
         $container->register('baz', TestDefinition2::class);
 
         $container->register('foo', ServiceLocator::class)
-            ->setArguments(array(array(
+            ->setArguments([[
                 new Reference('bar'),
                 'bar' => new Reference('baz'),
-            )))
+            ]])
             ->addTag('container.service_locator')
         ;
 
@@ -114,10 +114,10 @@ public function testInheritedKeyOverwritesPreviousServiceWithKey()
         $container->register('baz', TestDefinition2::class);
 
         $container->register('foo', ServiceLocator::class)
-            ->setArguments(array(array(
+            ->setArguments([[
                 'bar' => new Reference('baz'),
                 new Reference('bar'),
-            )))
+            ]])
             ->addTag('container.service_locator')
         ;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
index 200f84bee682..b4acc949c261 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -1086,7 +1086,7 @@ public function testServiceLocatorArgument()
         $container = include self::$fixturesPath.'/containers/container_service_locator_argument.php';
         $container->compile();
         $dumper = new PhpDumper($container);
-        $dump = $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Service_Locator_Argument'));
+        $dump = $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Service_Locator_Argument']);
         $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_service_locator_argument.php', str_replace(str_replace('\\', '\\\\', self::$fixturesPath.\DIRECTORY_SEPARATOR.'includes'.\DIRECTORY_SEPARATOR), '%path%', $dump));
         eval('?>'.$dump);
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php b/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
index 04f8a7f163a9..8a705094824f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/EnvVarProcessorTest.php
@@ -346,12 +346,12 @@ public function testGetEnvKeyNoArrayResult($value)
 
     public function noArrayValues()
     {
-        return array(
-            array(null),
-            array('string'),
-            array(1),
-            array(true),
-        );
+        return [
+            [null],
+            ['string'],
+            [1],
+            [true],
+        ];
     }
 
     /**
@@ -372,11 +372,11 @@ public function testGetEnvKeyArrayKeyNotFound($value)
 
     public function invalidArrayValues()
     {
-        return array(
-            array(array()),
-            array(array('index2' => 'value')),
-            array(array('index', 'index2')),
-        );
+        return [
+            [[]],
+            [['index2' => 'value']],
+            [['index', 'index2']],
+        ];
     }
 
     /**
@@ -395,17 +395,17 @@ public function testGetEnvKey($value)
 
     public function arrayValues()
     {
-        return array(
-            array(array('index' => 'password')),
-            array(array('index' => 'true')),
-            array(array('index' => false)),
-            array(array('index' => '1')),
-            array(array('index' => 1)),
-            array(array('index' => '1.1')),
-            array(array('index' => 1.1)),
-            array(array('index' => array())),
-            array(array('index' => array('val1', 'val2'))),
-        );
+        return [
+            [['index' => 'password']],
+            [['index' => 'true']],
+            [['index' => false]],
+            [['index' => '1']],
+            [['index' => 1]],
+            [['index' => '1.1']],
+            [['index' => 1.1]],
+            [['index' => []]],
+            [['index' => ['val1', 'val2']]],
+        ];
     }
 
     public function testGetEnvKeyChained()
@@ -415,9 +415,9 @@ public function testGetEnvKeyChained()
         $this->assertSame('password', $processor->getEnv('key', 'index:file:foo', function ($name) {
             $this->assertSame('file:foo', $name);
 
-            return array(
+            return [
                 'index' => 'password',
-            );
+            ];
         }));
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/FileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/FileLoaderTest.php
index 87971eadd836..b94ee1953fd7 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/FileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/FileLoaderTest.php
@@ -46,21 +46,21 @@ public function testImportWithGlobPattern()
         $container = new ContainerBuilder();
         $loader = new TestFileLoader($container, new FileLocator(self::$fixturesPath));
 
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new IniFileLoader($container, new FileLocator(self::$fixturesPath.'/ini')),
             new XmlFileLoader($container, new FileLocator(self::$fixturesPath.'/xml')),
             new PhpFileLoader($container, new FileLocator(self::$fixturesPath.'/php')),
             new YamlFileLoader($container, new FileLocator(self::$fixturesPath.'/yaml')),
-        ));
+        ]);
 
         $loader->setResolver($resolver);
         $loader->import('{F}ixtures/{xml,yaml}/services2.{yml,xml}');
 
         $actual = $container->getParameterBag()->all();
-        $expected = array(
+        $expected = [
             'a string',
             'foo' => 'bar',
-            'values' => array(
+            'values' => [
                 0,
                 'integer' => 4,
                 100 => null,
@@ -72,14 +72,14 @@ public function testImportWithGlobPattern()
                 'float' => 1.3,
                 1000.3,
                 'a string',
-                array('foo', 'bar'),
-            ),
-            'mixedcase' => array('MixedCaseKey' => 'value'),
+                ['foo', 'bar'],
+            ],
+            'mixedcase' => ['MixedCaseKey' => 'value'],
             'constant' => PHP_EOL,
             'bar' => '%foo%',
             'escape' => '@escapeme',
             'foo_bar' => new Reference('foo_bar'),
-        );
+        ];
 
         $this->assertEquals(array_keys($expected), array_keys($actual), '->load() imports and merges imported files');
     }
@@ -93,15 +93,15 @@ public function testRegisterClasses()
         $loader->registerClasses(new Definition(), 'Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub\\', 'Prototype/%sub_dir%/*');
 
         $this->assertEquals(
-            array('service_container', Bar::class),
+            ['service_container', Bar::class],
             array_keys($container->getDefinitions())
         );
         $this->assertEquals(
-            array(
+            [
                 PsrContainerInterface::class,
                 ContainerInterface::class,
                 BarInterface::class,
-            ),
+            ],
             array_keys($container->getAliases())
         );
     }
@@ -126,11 +126,11 @@ public function testRegisterClassesWithExclude()
         $this->assertFalse($container->has(DeeperBaz::class));
 
         $this->assertEquals(
-            array(
+            [
                 PsrContainerInterface::class,
                 ContainerInterface::class,
                 BarInterface::class,
-            ),
+            ],
             array_keys($container->getAliases())
         );
     }
@@ -143,10 +143,10 @@ public function testRegisterClassesWithExcludeAsArray()
         $loader->registerClasses(
             new Definition(),
             'Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\\',
-            'Prototype/*', array(
+            'Prototype/*', [
                 'Prototype/%sub_dir%',
                 'Prototype/OtherDir/AnotherSub/DeeperBaz.php',
-            )
+            ]
         );
         $this->assertTrue($container->has(Foo::class));
         $this->assertTrue($container->has(Baz::class));
@@ -168,11 +168,11 @@ public function testNestedRegisterClasses()
         $this->assertTrue($container->has(Foo::class));
 
         $this->assertEquals(
-            array(
+            [
                 PsrContainerInterface::class,
                 ContainerInterface::class,
                 FooInterface::class,
-            ),
+            ],
             array_keys($container->getAliases())
         );
 
@@ -197,7 +197,7 @@ public function testMissingParentClass()
         $this->assertTrue($container->has(MissingParent::class));
 
         $this->assertSame(
-            array('While discovering services from namespace "Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\", an error was thrown when processing the class "Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\MissingParent": "Class Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\MissingClass not found".'),
+            ['While discovering services from namespace "Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\", an error was thrown when processing the class "Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\MissingParent": "Class Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\BadClasses\MissingClass not found".'],
             $container->getDefinition(MissingParent::class)->getErrors()
         );
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
index 5a54688089e3..48791706a776 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php
@@ -67,16 +67,16 @@ public function testConfig($file)
 
     public function provideConfig()
     {
-        yield array('basic');
-        yield array('object');
-        yield array('defaults');
-        yield array('instanceof');
-        yield array('prototype');
-        yield array('prototype_array');
-        yield array('child');
-        yield array('php7');
-        yield array('anonymous');
-        yield array('lazy_fqcn');
+        yield ['basic'];
+        yield ['object'];
+        yield ['defaults'];
+        yield ['instanceof'];
+        yield ['prototype'];
+        yield ['prototype_array'];
+        yield ['child'];
+        yield ['php7'];
+        yield ['anonymous'];
+        yield ['lazy_fqcn'];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
index 330461c7ede5..6d9634c66cba 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
@@ -619,10 +619,10 @@ public function testPrototype()
             '/*',
             true,
             false,
-            array(
+            [
                 str_replace(\DIRECTORY_SEPARATOR, '/', $prototypeRealPath.\DIRECTORY_SEPARATOR.'OtherDir') => true,
                 str_replace(\DIRECTORY_SEPARATOR, '/', $prototypeRealPath.\DIRECTORY_SEPARATOR.'BadClasses') => true,
-            )
+            ]
         );
         $this->assertContains((string) $globResource, $resources);
         $resources = array_map('strval', $resources);
@@ -638,7 +638,7 @@ public function testPrototypeExcludeWithArray()
 
         $ids = array_keys($container->getDefinitions());
         sort($ids);
-        $this->assertSame(array(Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'), $ids);
+        $this->assertSame([Prototype\Foo::class, Prototype\Sub\Bar::class, 'service_container'], $ids);
 
         $resources = $container->getResources();
 
@@ -651,10 +651,10 @@ public function testPrototypeExcludeWithArray()
             '/*',
             true,
             false,
-            array(
+            [
                 str_replace(\DIRECTORY_SEPARATOR, '/', $prototypeRealPath.\DIRECTORY_SEPARATOR.'BadClasses') => true,
                 str_replace(\DIRECTORY_SEPARATOR, '/', $prototypeRealPath.\DIRECTORY_SEPARATOR.'OtherDir') => true,
-            )
+            ]
         );
         $this->assertContains((string) $globResource, $resources);
         $resources = array_map('strval', $resources);
@@ -849,7 +849,7 @@ public function testFqcnLazyProxy()
         $loader->load('services_lazy_fqcn.xml');
 
         $definition = $container->getDefinition('foo');
-        $this->assertSame(array(array('interface' => 'SomeInterface')), $definition->getTag('proxy'));
+        $this->assertSame([['interface' => 'SomeInterface']], $definition->getTag('proxy'));
     }
 
     public function testTsantosContainer()
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
index 14a2b764392f..37e6054f5545 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
@@ -371,10 +371,10 @@ public function testPrototype()
             $fixturesDir.'Prototype',
             '',
             true,
-            false, array(
+            false, [
                 str_replace(\DIRECTORY_SEPARATOR, '/', $prototypeRealPath.\DIRECTORY_SEPARATOR.'BadClasses') => true,
                 str_replace(\DIRECTORY_SEPARATOR, '/', $prototypeRealPath.\DIRECTORY_SEPARATOR.'OtherDir') => true,
-            )
+            ]
         );
         $this->assertContains((string) $globResource, $resources);
         $resources = array_map('strval', $resources);
@@ -768,6 +768,6 @@ public function testFqcnLazyProxy()
         $loader->load('services_lazy_fqcn.yml');
 
         $definition = $container->getDefinition('foo');
-        $this->assertSame(array(array('interface' => 'SomeInterface')), $definition->getTag('proxy'));
+        $this->assertSame([['interface' => 'SomeInterface']], $definition->getTag('proxy'));
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php b/src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php
index 3b5c9bb009fd..9c0962880fc9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php
@@ -29,10 +29,10 @@ public function getServiceLocator(array $factories)
      */
     public function testGetThrowsOnUndefinedService()
     {
-        $locator = $this->getServiceLocator(array(
+        $locator = $this->getServiceLocator([
             'foo' => function () { return 'bar'; },
             'bar' => function () { return 'baz'; },
-        ));
+        ]);
 
         $locator->get('dummy');
     }
@@ -55,7 +55,7 @@ public function testThrowsInServiceSubscriber()
         $container = new Container();
         $container->set('foo', new \stdClass());
         $subscriber = new SomeServiceSubscriber();
-        $subscriber->container = $this->getServiceLocator(array('bar' => function () {}));
+        $subscriber->container = $this->getServiceLocator(['bar' => function () {}]);
         $subscriber->container = $subscriber->container->withContext('caller', $container);
 
         $subscriber->getFoo();
@@ -70,17 +70,17 @@ public function testGetThrowsServiceNotFoundException()
         $container = new Container();
         $container->set('foo', new \stdClass());
 
-        $locator = new ServiceLocator(array());
+        $locator = new ServiceLocator([]);
         $locator = $locator->withContext('foo', $container);
         $locator->get('foo');
     }
 
     public function testInvoke()
     {
-        $locator = $this->getServiceLocator(array(
+        $locator = $this->getServiceLocator([
             'foo' => function () { return 'bar'; },
             'bar' => function () { return 'baz'; },
-        ));
+        ]);
 
         $this->assertSame('bar', $locator('foo'));
         $this->assertSame('baz', $locator('bar'));
@@ -99,6 +99,6 @@ public function getFoo()
 
     public static function getSubscribedServices()
     {
-        return array('bar' => 'stdClass');
+        return ['bar' => 'stdClass'];
     }
 }
diff --git a/src/Symfony/Component/DomCrawler/AbstractUriElement.php b/src/Symfony/Component/DomCrawler/AbstractUriElement.php
index e26be3fcf694..1ef51df59be6 100644
--- a/src/Symfony/Component/DomCrawler/AbstractUriElement.php
+++ b/src/Symfony/Component/DomCrawler/AbstractUriElement.php
@@ -47,7 +47,7 @@ public function __construct(\DOMElement $node, string $currentUri = null, ?strin
         $this->currentUri = $currentUri;
 
         $elementUriIsRelative = null === parse_url(trim($this->getRawUri()), PHP_URL_SCHEME);
-        $baseUriIsAbsolute = \in_array(strtolower(substr($this->currentUri, 0, 4)), array('http', 'file'));
+        $baseUriIsAbsolute = \in_array(strtolower(substr($this->currentUri, 0, 4)), ['http', 'file']);
         if ($elementUriIsRelative && !$baseUriIsAbsolute) {
             throw new \InvalidArgumentException(sprintf('The URL of the element is relative, so you must define its base URI passing an absolute URL to the constructor of the %s class ("%s" was passed).', __CLASS__, $this->currentUri));
         }
@@ -146,7 +146,7 @@ protected function canonicalizePath($path)
             $path .= '/';
         }
 
-        $output = array();
+        $output = [];
 
         foreach (explode('/', $path) as $segment) {
             if ('..' === $segment) {
diff --git a/src/Symfony/Component/Dotenv/Dotenv.php b/src/Symfony/Component/Dotenv/Dotenv.php
index 3d7bc3bf93a4..66ca8c8cd99a 100644
--- a/src/Symfony/Component/Dotenv/Dotenv.php
+++ b/src/Symfony/Component/Dotenv/Dotenv.php
@@ -65,7 +65,7 @@ public function load(string $path, string ...$extraPaths): void
      * @throws FormatException when a file has a syntax error
      * @throws PathException   when a file does not exist or is not readable
      */
-    public function loadEnv(string $path, string $varName = 'APP_ENV', string $defaultEnv = 'dev', array $testEnvs = array('test')): void
+    public function loadEnv(string $path, string $varName = 'APP_ENV', string $defaultEnv = 'dev', array $testEnvs = ['test']): void
     {
         if (file_exists($path) || !file_exists($p = "$path.dist")) {
             $this->load($path);
@@ -74,7 +74,7 @@ public function loadEnv(string $path, string $varName = 'APP_ENV', string $defau
         }
 
         if (null === $env = $_SERVER[$varName] ?? $_ENV[$varName] ?? null) {
-            $this->populate(array($varName => $env = $defaultEnv));
+            $this->populate([$varName => $env = $defaultEnv]);
         }
 
         if (!\in_array($env, $testEnvs, true) && file_exists($p = "$path.local")) {
diff --git a/src/Symfony/Component/Dotenv/Tests/DotenvTest.php b/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
index 29cae1bea2f9..b9918c94268d 100644
--- a/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
+++ b/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
@@ -343,7 +343,7 @@ public function testEnvVarIsOverriden()
         putenv('TEST_ENV_VAR_OVERRIDEN=original_value');
 
         $dotenv = new Dotenv();
-        $dotenv->populate(array('TEST_ENV_VAR_OVERRIDEN' => 'new_value'), true);
+        $dotenv->populate(['TEST_ENV_VAR_OVERRIDEN' => 'new_value'], true);
 
         $this->assertSame('new_value', getenv('TEST_ENV_VAR_OVERRIDEN'));
         $this->assertSame('new_value', $_ENV['TEST_ENV_VAR_OVERRIDEN']);
diff --git a/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php b/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
index d421941fc21a..513d87c7e818 100644
--- a/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
+++ b/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
@@ -39,8 +39,8 @@ public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $sto
         $this->dispatcher = $dispatcher;
         $this->stopwatch = $stopwatch;
         $this->logger = $logger;
-        $this->wrappedListeners = array();
-        $this->orphanedEvents = array();
+        $this->wrappedListeners = [];
+        $this->orphanedEvents = [];
     }
 
     /**
@@ -164,10 +164,10 @@ public function dispatch($eventName, Event $event = null)
     public function getCalledListeners()
     {
         if (null === $this->callStack) {
-            return array();
+            return [];
         }
 
-        $called = array();
+        $called = [];
         foreach ($this->callStack as $listener) {
             list($eventName) = $this->callStack->getInfo();
 
@@ -186,14 +186,14 @@ public function getNotCalledListeners()
             $allListeners = $this->getListeners();
         } catch (\Exception $e) {
             if (null !== $this->logger) {
-                $this->logger->info('An exception was thrown while getting the uncalled listeners.', array('exception' => $e));
+                $this->logger->info('An exception was thrown while getting the uncalled listeners.', ['exception' => $e]);
             }
 
             // unable to retrieve the uncalled listeners
-            return array();
+            return [];
         }
 
-        $notCalled = array();
+        $notCalled = [];
         foreach ($allListeners as $eventName => $listeners) {
             foreach ($listeners as $listener) {
                 $called = false;
@@ -216,7 +216,7 @@ public function getNotCalledListeners()
             }
         }
 
-        uasort($notCalled, array($this, 'sortNotCalledListeners'));
+        uasort($notCalled, [$this, 'sortNotCalledListeners']);
 
         return $notCalled;
     }
@@ -229,7 +229,7 @@ public function getOrphanedEvents(): array
     public function reset()
     {
         $this->callStack = null;
-        $this->orphanedEvents = array();
+        $this->orphanedEvents = [];
     }
 
     /**
@@ -279,7 +279,7 @@ private function preProcess($eventName)
             $this->wrappedListeners[$eventName][] = $wrappedListener;
             $this->dispatcher->removeListener($eventName, $listener);
             $this->dispatcher->addListener($eventName, $wrappedListener, $priority);
-            $this->callStack->attach($wrappedListener, array($eventName));
+            $this->callStack->attach($wrappedListener, [$eventName]);
         }
     }
 
@@ -297,7 +297,7 @@ private function postProcess($eventName)
             $this->dispatcher->addListener($eventName, $listener->getWrappedListener(), $priority);
 
             if (null !== $this->logger) {
-                $context = array('event' => $eventName, 'listener' => $listener->getPretty());
+                $context = ['event' => $eventName, 'listener' => $listener->getPretty()];
             }
 
             if ($listener->wasCalled()) {
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index 2c22b31bd63b..8ad94a1e28ab 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -1334,21 +1334,21 @@ public function testMirrorContentsWithSameNameAsSourceOrTargetWithDeleteOption()
 
     public function testMirrorWithCustomIterator()
     {
-        $sourcePath = $this->workspace.DIRECTORY_SEPARATOR.'source'.DIRECTORY_SEPARATOR;
+        $sourcePath = $this->workspace.\DIRECTORY_SEPARATOR.'source'.\DIRECTORY_SEPARATOR;
         mkdir($sourcePath);
 
-        $file = $sourcePath.DIRECTORY_SEPARATOR.'file';
+        $file = $sourcePath.\DIRECTORY_SEPARATOR.'file';
         file_put_contents($file, 'FILE');
 
-        $targetPath = $this->workspace.DIRECTORY_SEPARATOR.'target'.DIRECTORY_SEPARATOR;
+        $targetPath = $this->workspace.\DIRECTORY_SEPARATOR.'target'.\DIRECTORY_SEPARATOR;
 
         $splFile = new \SplFileInfo($file);
-        $iterator = new \ArrayObject(array($splFile));
+        $iterator = new \ArrayObject([$splFile]);
 
         $this->filesystem->mirror($sourcePath, $targetPath, $iterator);
 
         $this->assertTrue(is_dir($targetPath));
-        $this->assertFileEquals($file, $targetPath.DIRECTORY_SEPARATOR.'file');
+        $this->assertFileEquals($file, $targetPath.\DIRECTORY_SEPARATOR.'file');
     }
 
     /**
@@ -1357,17 +1357,17 @@ public function testMirrorWithCustomIterator()
      */
     public function testMirrorWithCustomIteratorWithRelativePath()
     {
-        $sourcePath = $this->workspace.DIRECTORY_SEPARATOR.'source'.DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR.'source'.DIRECTORY_SEPARATOR;
-        $realSourcePath = $this->workspace.DIRECTORY_SEPARATOR.'source'.DIRECTORY_SEPARATOR;
+        $sourcePath = $this->workspace.\DIRECTORY_SEPARATOR.'source'.\DIRECTORY_SEPARATOR.'..'.\DIRECTORY_SEPARATOR.'source'.\DIRECTORY_SEPARATOR;
+        $realSourcePath = $this->workspace.\DIRECTORY_SEPARATOR.'source'.\DIRECTORY_SEPARATOR;
         mkdir($realSourcePath);
 
         $file = $realSourcePath.'file';
         file_put_contents($file, 'FILE');
 
-        $targetPath = $this->workspace.DIRECTORY_SEPARATOR.'target'.DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR.'target'.DIRECTORY_SEPARATOR;
+        $targetPath = $this->workspace.\DIRECTORY_SEPARATOR.'target'.\DIRECTORY_SEPARATOR.'..'.\DIRECTORY_SEPARATOR.'target'.\DIRECTORY_SEPARATOR;
 
         $splFile = new \SplFileInfo($file);
-        $iterator = new \ArrayObject(array($splFile));
+        $iterator = new \ArrayObject([$splFile]);
 
         $this->filesystem->mirror($sourcePath, $targetPath, $iterator);
     }
diff --git a/src/Symfony/Component/Finder/Iterator/SortableIterator.php b/src/Symfony/Component/Finder/Iterator/SortableIterator.php
index 56bdcfb1a4f6..f95341f3552f 100644
--- a/src/Symfony/Component/Finder/Iterator/SortableIterator.php
+++ b/src/Symfony/Component/Finder/Iterator/SortableIterator.php
@@ -73,7 +73,8 @@ public function __construct(\Traversable $iterator, $sort, bool $reverseOrder =
         } elseif (self::SORT_BY_NONE === $sort) {
             $this->sort = $order;
         } elseif (\is_callable($sort)) {
-            $this->sort = $reverseOrder ? function ($a, $b) use ($sort) { return -$sort($a, $b); } : $sort;
+            $this->sort = $reverseOrder ? function ($a, $b) use ($sort) { return -$sort($a, $b); }
+            : $sort;
         } else {
             throw new \InvalidArgumentException('The SortableIterator takes a PHP callable or a valid built-in sort algorithm as an argument.');
         }
diff --git a/src/Symfony/Component/Finder/Tests/FinderTest.php b/src/Symfony/Component/Finder/Tests/FinderTest.php
index cdd176d79132..1b50663e9f13 100644
--- a/src/Symfony/Component/Finder/Tests/FinderTest.php
+++ b/src/Symfony/Component/Finder/Tests/FinderTest.php
@@ -24,20 +24,20 @@ public function testDirectories()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->directories());
-        $this->assertIterator($this->toAbsolute(array('foo', 'qux', 'toto')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'qux', 'toto']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->directories();
         $finder->files();
         $finder->directories();
-        $this->assertIterator($this->toAbsolute(array('foo', 'qux', 'toto')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'qux', 'toto']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testFiles()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->files());
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp',
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp',
             'test.php',
             'test.py',
             'foo bar',
@@ -49,13 +49,13 @@ public function testFiles()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->files();
         $finder->directories();
         $finder->files();
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp',
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp',
             'test.php',
             'test.py',
             'foo bar',
@@ -67,14 +67,14 @@ public function testFiles()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testRemoveTrailingSlash()
     {
         $finder = $this->buildFinder();
 
-        $expected = $this->toAbsolute(array(
+        $expected = $this->toAbsolute([
             'foo/bar.tmp',
             'test.php',
             'test.py',
@@ -87,7 +87,7 @@ public function testRemoveTrailingSlash()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        ));
+        ]);
         $in = self::$tmpDir.'//';
 
         $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
@@ -102,7 +102,7 @@ public function testSymlinksNotResolved()
         $finder = $this->buildFinder();
 
         symlink($this->toAbsolute('foo'), $this->toAbsolute('baz'));
-        $expected = $this->toAbsolute(array('baz/bar.tmp'));
+        $expected = $this->toAbsolute(['baz/bar.tmp']);
         $in = self::$tmpDir.'/baz/';
         try {
             $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
@@ -117,7 +117,7 @@ public function testBackPathNotNormalized()
     {
         $finder = $this->buildFinder();
 
-        $expected = $this->toAbsolute(array('foo/../foo/bar.tmp'));
+        $expected = $this->toAbsolute(['foo/../foo/bar.tmp']);
         $in = self::$tmpDir.'/foo/../foo/';
         $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
     }
@@ -126,7 +126,7 @@ public function testDepth()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->depth('< 1'));
-        $this->assertIterator($this->toAbsolute(array('foo',
+        $this->assertIterator($this->toAbsolute(['foo',
             'test.php',
             'test.py',
             'toto',
@@ -138,11 +138,11 @@ public function testDepth()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->depth('<= 0'));
-        $this->assertIterator($this->toAbsolute(array('foo',
+        $this->assertIterator($this->toAbsolute(['foo',
             'test.php',
             'test.py',
             'toto',
@@ -154,37 +154,37 @@ public function testDepth()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->depth('>= 1'));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo/bar.tmp',
             'qux/baz_100_1.py',
             'qux/baz_1_2.py',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->depth('< 1')->depth('>= 1');
-        $this->assertIterator(array(), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testDepthWithArrayParam()
     {
         $finder = $this->buildFinder();
-        $finder->depth(array('>= 1', '< 2'));
-        $this->assertIterator($this->toAbsolute(array(
+        $finder->depth(['>= 1', '< 2']);
+        $this->assertIterator($this->toAbsolute([
             'foo/bar.tmp',
             'qux/baz_100_1.py',
             'qux/baz_1_2.py',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testName()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->name('*.php'));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'test.php',
             'qux_0_1.php',
             'qux_1000_1.php',
@@ -192,20 +192,20 @@ public function testName()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('test.ph*');
         $finder->name('test.py');
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('~^test~i');
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('~\\.php$~i');
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'test.php',
             'qux_0_1.php',
             'qux_1000_1.php',
@@ -213,25 +213,25 @@ public function testName()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('test.p{hp,y}');
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testNameWithArrayParam()
     {
         $finder = $this->buildFinder();
-        $finder->name(array('test.php', 'test.py'));
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $finder->name(['test.php', 'test.py']);
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testNotName()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->notName('*.php'));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo/bar.tmp',
             'test.py',
@@ -240,44 +240,44 @@ public function testNotName()
             'qux',
             'qux/baz_100_1.py',
             'qux/baz_1_2.py',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->notName('*.php');
         $finder->notName('*.py');
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo/bar.tmp',
             'toto',
             'foo bar',
             'qux',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('test.ph*');
         $finder->name('test.py');
         $finder->notName('*.php');
         $finder->notName('*.py');
-        $this->assertIterator(array(), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->name('test.ph*');
         $finder->name('test.py');
         $finder->notName('*.p{hp,y}');
-        $this->assertIterator(array(), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testNotNameWithArrayParam()
     {
         $finder = $this->buildFinder();
-        $finder->notName(array('*.php', '*.py'));
-        $this->assertIterator($this->toAbsolute(array(
+        $finder->notName(['*.php', '*.py']);
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo/bar.tmp',
             'toto',
             'foo bar',
             'qux',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     /**
@@ -287,45 +287,45 @@ public function testRegexName($regex)
     {
         $finder = $this->buildFinder();
         $finder->name($regex);
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'test.py',
             'test.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSize()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->files()->size('< 1K')->size('> 500'));
-        $this->assertIterator($this->toAbsolute(array('test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSizeWithArrayParam()
     {
         $finder = $this->buildFinder();
-        $this->assertSame($finder, $finder->files()->size(array('< 1K', '> 500')));
-        $this->assertIterator($this->toAbsolute(array('test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertSame($finder, $finder->files()->size(['< 1K', '> 500']));
+        $this->assertIterator($this->toAbsolute(['test.php']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testDate()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->files()->date('until last month'));
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp', 'test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testDateWithArrayParam()
     {
         $finder = $this->buildFinder();
-        $this->assertSame($finder, $finder->files()->date(array('>= 2005-10-15', 'until last month')));
-        $this->assertIterator($this->toAbsolute(array('foo/bar.tmp', 'test.php')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertSame($finder, $finder->files()->date(['>= 2005-10-15', 'until last month']));
+        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testExclude()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->exclude('foo'));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'test.php',
             'test.py',
             'toto',
@@ -339,14 +339,14 @@ public function testExclude()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testIgnoreVCS()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->ignoreVCS(false)->ignoreDotFiles(false));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             '.git',
             'foo',
             'foo/bar.tmp',
@@ -368,11 +368,11 @@ public function testIgnoreVCS()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->ignoreVCS(false)->ignoreVCS(false)->ignoreDotFiles(false);
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             '.git',
             'foo',
             'foo/bar.tmp',
@@ -394,11 +394,11 @@ public function testIgnoreVCS()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->ignoreVCS(true)->ignoreDotFiles(false));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo/bar.tmp',
             'test.php',
@@ -418,14 +418,14 @@ public function testIgnoreVCS()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testIgnoreDotFiles()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->ignoreDotFiles(false)->ignoreVCS(false));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             '.git',
             '.bar',
             '.foo',
@@ -447,11 +447,11 @@ public function testIgnoreDotFiles()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $finder->ignoreDotFiles(false)->ignoreDotFiles(false)->ignoreVCS(false);
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             '.git',
             '.bar',
             '.foo',
@@ -473,11 +473,11 @@ public function testIgnoreDotFiles()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->ignoreDotFiles(true)->ignoreVCS(false));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo/bar.tmp',
             'test.php',
@@ -493,14 +493,14 @@ public function testIgnoreDotFiles()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByName()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByName());
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo bar',
             'foo/bar.tmp',
@@ -516,14 +516,14 @@ public function testSortByName()
             'test.php',
             'test.py',
             'toto',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByType()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByType());
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo bar',
             'toto',
@@ -539,14 +539,14 @@ public function testSortByType()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByAccessedTime()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByAccessedTime());
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo/bar.tmp',
             'test.php',
             'toto',
@@ -562,14 +562,14 @@ public function testSortByAccessedTime()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByChangedTime()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByChangedTime());
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'toto',
             'test.py',
             'test.php',
@@ -585,14 +585,14 @@ public function testSortByChangedTime()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByModifiedTime()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByModifiedTime());
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo/bar.tmp',
             'test.php',
             'toto',
@@ -608,7 +608,7 @@ public function testSortByModifiedTime()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testReverseSorting()
@@ -616,7 +616,7 @@ public function testReverseSorting()
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByName());
         $this->assertSame($finder, $finder->reverseSorting());
-        $this->assertOrderedIteratorInForeach($this->toAbsolute(array(
+        $this->assertOrderedIteratorInForeach($this->toAbsolute([
             'toto',
             'test.py',
             'test.php',
@@ -632,14 +632,14 @@ public function testReverseSorting()
             'foo/bar.tmp',
             'foo bar',
             'foo',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSortByNameNatural()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByName(true));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo bar',
             'foo/bar.tmp',
@@ -655,11 +655,11 @@ public function testSortByNameNatural()
             'test.php',
             'test.py',
             'toto',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sortByName(false));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo bar',
             'foo/bar.tmp',
@@ -675,14 +675,14 @@ public function testSortByNameNatural()
             'test.php',
             'test.py',
             'toto',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testSort()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->sort(function (\SplFileInfo $a, \SplFileInfo $b) { return strcmp($a->getRealPath(), $b->getRealPath()); }));
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo bar',
             'foo/bar.tmp',
@@ -698,14 +698,14 @@ public function testSort()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testFilter()
     {
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->filter(function (\SplFileInfo $f) { return false !== strpos($f, 'test'); }));
-        $this->assertIterator($this->toAbsolute(array('test.php', 'test.py')), $finder->in(self::$tmpDir)->getIterator());
+        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testFollowLinks()
@@ -716,7 +716,7 @@ public function testFollowLinks()
 
         $finder = $this->buildFinder();
         $this->assertSame($finder, $finder->followLinks());
-        $this->assertIterator($this->toAbsolute(array(
+        $this->assertIterator($this->toAbsolute([
             'foo',
             'foo/bar.tmp',
             'test.php',
@@ -732,15 +732,15 @@ public function testFollowLinks()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        )), $finder->in(self::$tmpDir)->getIterator());
+        ]), $finder->in(self::$tmpDir)->getIterator());
     }
 
     public function testIn()
     {
         $finder = $this->buildFinder();
-        $iterator = $finder->files()->name('*.php')->depth('< 1')->in(array(self::$tmpDir, __DIR__))->getIterator();
+        $iterator = $finder->files()->name('*.php')->depth('< 1')->in([self::$tmpDir, __DIR__])->getIterator();
 
-        $expected = array(
+        $expected = [
             self::$tmpDir.\DIRECTORY_SEPARATOR.'test.php',
             __DIR__.\DIRECTORY_SEPARATOR.'FinderTest.php',
             __DIR__.\DIRECTORY_SEPARATOR.'GlobTest.php',
@@ -750,7 +750,7 @@ public function testIn()
             self::$tmpDir.\DIRECTORY_SEPARATOR.'qux_10_2.php',
             self::$tmpDir.\DIRECTORY_SEPARATOR.'qux_12_0.php',
             self::$tmpDir.\DIRECTORY_SEPARATOR.'qux_2_0.php',
-        );
+        ];
 
         $this->assertIterator($expected, $iterator);
     }
@@ -767,9 +767,9 @@ public function testInWithNonExistentDirectory()
     public function testInWithGlob()
     {
         $finder = $this->buildFinder();
-        $finder->in(array(__DIR__.'/Fixtures/*/B/C/', __DIR__.'/Fixtures/*/*/B/C/'))->getIterator();
+        $finder->in([__DIR__.'/Fixtures/*/B/C/', __DIR__.'/Fixtures/*/*/B/C/'])->getIterator();
 
-        $this->assertIterator($this->toAbsoluteFixtures(array('A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy')), $finder);
+        $this->assertIterator($this->toAbsoluteFixtures(['A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy']), $finder);
     }
 
     /**
@@ -784,9 +784,9 @@ public function testInWithNonDirectoryGlob()
     public function testInWithGlobBrace()
     {
         $finder = $this->buildFinder();
-        $finder->in(array(__DIR__.'/Fixtures/{A,copy/A}/B/C'))->getIterator();
+        $finder->in([__DIR__.'/Fixtures/{A,copy/A}/B/C'])->getIterator();
 
-        $this->assertIterator($this->toAbsoluteFixtures(array('A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy')), $finder);
+        $this->assertIterator($this->toAbsoluteFixtures(['A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy']), $finder);
     }
 
     /**
@@ -801,12 +801,12 @@ public function testGetIteratorWithoutIn()
     public function testGetIterator()
     {
         $finder = $this->buildFinder();
-        $dirs = array();
+        $dirs = [];
         foreach ($finder->directories()->in(self::$tmpDir) as $dir) {
             $dirs[] = (string) $dir;
         }
 
-        $expected = $this->toAbsolute(array('foo', 'qux', 'toto'));
+        $expected = $this->toAbsolute(['foo', 'qux', 'toto']);
 
         sort($dirs);
         sort($expected);
@@ -827,13 +827,13 @@ public function testRelativePath()
     {
         $finder = $this->buildFinder()->in(self::$tmpDir);
 
-        $paths = array();
+        $paths = [];
 
         foreach ($finder as $file) {
             $paths[] = $file->getRelativePath();
         }
 
-        $ref = array('', '', '', '', '', '', '', '', '', '', '', 'foo', 'qux', 'qux', '');
+        $ref = ['', '', '', '', '', '', '', '', '', '', '', 'foo', 'qux', 'qux', ''];
 
         sort($ref);
         sort($paths);
@@ -845,13 +845,13 @@ public function testRelativePathname()
     {
         $finder = $this->buildFinder()->in(self::$tmpDir)->sortByName();
 
-        $paths = array();
+        $paths = [];
 
         foreach ($finder as $file) {
             $paths[] = $file->getRelativePathname();
         }
 
-        $ref = array(
+        $ref = [
             'test.php',
             'toto',
             'test.py',
@@ -867,7 +867,7 @@ public function testRelativePathname()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
         sort($paths);
         sort($ref);
@@ -885,7 +885,7 @@ public function testAppendWithAFinder()
 
         $finder = $finder->append($finder1);
 
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'qux', 'toto')), $finder->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'qux', 'toto']), $finder->getIterator());
     }
 
     public function testAppendWithAnArray()
@@ -893,14 +893,14 @@ public function testAppendWithAnArray()
         $finder = $this->buildFinder();
         $finder->files()->in(self::$tmpDir.\DIRECTORY_SEPARATOR.'foo');
 
-        $finder->append($this->toAbsolute(array('foo', 'toto')));
+        $finder->append($this->toAbsolute(['foo', 'toto']));
 
-        $this->assertIterator($this->toAbsolute(array('foo', 'foo/bar.tmp', 'toto')), $finder->getIterator());
+        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'toto']), $finder->getIterator());
     }
 
     public function testAppendReturnsAFinder()
     {
-        $this->assertInstanceOf('Symfony\\Component\\Finder\\Finder', Finder::create()->append(array()));
+        $this->assertInstanceOf('Symfony\\Component\\Finder\\Finder', Finder::create()->append([]));
     }
 
     public function testAppendDoesNotRequireIn()
@@ -981,7 +981,7 @@ public function testContainsOnDirectory()
             ->directories()
             ->name('Fixtures')
             ->contains('abc');
-        $this->assertIterator(array(), $finder);
+        $this->assertIterator([], $finder);
     }
 
     public function testNotContainsOnDirectory()
@@ -991,7 +991,7 @@ public function testNotContainsOnDirectory()
             ->directories()
             ->name('Fixtures')
             ->notContains('abc');
-        $this->assertIterator(array(), $finder);
+        $this->assertIterator([], $finder);
     }
 
     /**
@@ -1002,10 +1002,10 @@ public function testNotContainsOnDirectory()
      */
     public function testMultipleLocations()
     {
-        $locations = array(
+        $locations = [
             self::$tmpDir.'/',
             self::$tmpDir.'/toto/',
-        );
+        ];
 
         // it is expected that there are test.py test.php in the tmpDir
         $finder = new Finder();
@@ -1027,18 +1027,18 @@ public function testMultipleLocations()
      */
     public function testMultipleLocationsWithSubDirectories()
     {
-        $locations = array(
+        $locations = [
             __DIR__.'/Fixtures/one',
             self::$tmpDir.\DIRECTORY_SEPARATOR.'toto',
-        );
+        ];
 
         $finder = $this->buildFinder();
         $finder->in($locations)->depth('< 10')->name('*.neon');
 
-        $expected = array(
+        $expected = [
             __DIR__.'/Fixtures/one'.\DIRECTORY_SEPARATOR.'b'.\DIRECTORY_SEPARATOR.'c.neon',
             __DIR__.'/Fixtures/one'.\DIRECTORY_SEPARATOR.'b'.\DIRECTORY_SEPARATOR.'d.neon',
-        );
+        ];
 
         $this->assertIterator($expected, $finder);
         $this->assertIteratorInForeach($expected, $finder);
@@ -1061,34 +1061,34 @@ public function testRegexSpecialCharsLocationWithPathRestrictionContainingStartF
         $finder->in(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'r+e.gex[c]a(r)s')
             ->path('/^dir/');
 
-        $expected = array('r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir', 'r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir'.\DIRECTORY_SEPARATOR.'bar.dat');
+        $expected = ['r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir', 'r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir'.\DIRECTORY_SEPARATOR.'bar.dat'];
         $this->assertIterator($this->toAbsoluteFixtures($expected), $finder);
     }
 
     public function getContainsTestData()
     {
-        return array(
-            array('', '', array()),
-            array('foo', 'bar', array()),
-            array('', 'foobar', array('dolor.txt', 'ipsum.txt', 'lorem.txt')),
-            array('lorem ipsum dolor sit amet', 'foobar', array('lorem.txt')),
-            array('sit', 'bar', array('dolor.txt', 'ipsum.txt', 'lorem.txt')),
-            array('dolor sit amet', '@^L@m', array('dolor.txt', 'ipsum.txt')),
-            array('/^lorem ipsum dolor sit amet$/m', 'foobar', array('lorem.txt')),
-            array('lorem', 'foobar', array('lorem.txt')),
-            array('', 'lorem', array('dolor.txt', 'ipsum.txt')),
-            array('ipsum dolor sit amet', '/^IPSUM/m', array('lorem.txt')),
-            array(array('lorem', 'dolor'), array(), array('lorem.txt', 'ipsum.txt', 'dolor.txt')),
-            array('', array('lorem', 'ipsum'), array('dolor.txt')),
-        );
+        return [
+            ['', '', []],
+            ['foo', 'bar', []],
+            ['', 'foobar', ['dolor.txt', 'ipsum.txt', 'lorem.txt']],
+            ['lorem ipsum dolor sit amet', 'foobar', ['lorem.txt']],
+            ['sit', 'bar', ['dolor.txt', 'ipsum.txt', 'lorem.txt']],
+            ['dolor sit amet', '@^L@m', ['dolor.txt', 'ipsum.txt']],
+            ['/^lorem ipsum dolor sit amet$/m', 'foobar', ['lorem.txt']],
+            ['lorem', 'foobar', ['lorem.txt']],
+            ['', 'lorem', ['dolor.txt', 'ipsum.txt']],
+            ['ipsum dolor sit amet', '/^IPSUM/m', ['lorem.txt']],
+            [['lorem', 'dolor'], [], ['lorem.txt', 'ipsum.txt', 'dolor.txt']],
+            ['', ['lorem', 'ipsum'], ['dolor.txt']],
+        ];
     }
 
     public function getRegexNameTestData()
     {
-        return array(
-            array('~.*t\\.p.+~i'),
-            array('~t.*s~i'),
-        );
+        return [
+            ['~.*t\\.p.+~i'],
+            ['~t.*s~i'],
+        ];
     }
 
     /**
@@ -1106,29 +1106,29 @@ public function testPath($matchPatterns, $noMatchPatterns, array $expected)
 
     public function getTestPathData()
     {
-        return array(
-            array('', '', array()),
-            array('/^A\/B\/C/', '/C$/',
-                array('A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat'),
-            ),
-            array('/^A\/B/', 'foobar',
-                array(
+        return [
+            ['', '', []],
+            ['/^A\/B\/C/', '/C$/',
+                ['A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat'],
+            ],
+            ['/^A\/B/', 'foobar',
+                [
                     'A'.\DIRECTORY_SEPARATOR.'B',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_S
10000
EPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
-                ),
-            ),
-            array('A/B/C', 'foobar',
-                array(
+                ],
+            ],
+            ['A/B/C', 'foobar',
+                [
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
                     'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                     'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat.copy',
-                ),
-            ),
-            array('A/B', 'foobar',
-                array(
+                ],
+            ],
+            ['A/B', 'foobar',
+                [
                     //dirs
                     'A'.\DIRECTORY_SEPARATOR.'B',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
@@ -1139,27 +1139,27 @@ public function getTestPathData()
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
                     'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat.copy',
                     'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat.copy',
-                ),
-            ),
-            array('/^with space\//', 'foobar',
-                array(
+                ],
+            ],
+            ['/^with space\//', 'foobar',
+                [
                     'with space'.\DIRECTORY_SEPARATOR.'foo.txt',
-                ),
-            ),
-            array(
+                ],
+            ],
+            [
                 '/^A/',
-                array('a.dat', 'abc.dat'),
-                array(
+                ['a.dat', 'abc.dat'],
+                [
                     'A',
                     'A'.\DIRECTORY_SEPARATOR.'B',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat',
-                ),
-            ),
-            array(
-                array('/^A/', 'one'),
+                ],
+            ],
+            [
+                ['/^A/', 'one'],
                 'foobar',
-                array(
+                [
                     'A',
                     'A'.\DIRECTORY_SEPARATOR.'B',
                     'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
@@ -1171,9 +1171,9 @@ public function getTestPathData()
                     'one'.\DIRECTORY_SEPARATOR.'b',
                     'one'.\DIRECTORY_SEPARATOR.'b'.\DIRECTORY_SEPARATOR.'c.neon',
                     'one'.\DIRECTORY_SEPARATOR.'b'.\DIRECTORY_SEPARATOR.'d.neon',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
     }
 
     public function testAccessDeniedException()
@@ -1191,7 +1191,7 @@ public function testAccessDeniedException()
 
         if (false === $couldRead = is_readable($testDir)) {
             try {
-                $this->assertIterator($this->toAbsolute(array('foo bar', 'test.php', 'test.py')), $finder->getIterator());
+                $this->assertIterator($this->toAbsolute(['foo bar', 'test.php', 'test.py']), $finder->getIterator());
                 $this->fail('Finder should throw an exception when opening a non-readable directory.');
             } catch (\Exception $e) {
                 $expectedExceptionClass = 'Symfony\\Component\\Finder\\Exception\\AccessDeniedException';
@@ -1230,7 +1230,7 @@ public function testIgnoredAccessDeniedException()
         chmod($testDir, 0333);
 
         if (false === ($couldRead = is_readable($testDir))) {
-            $this->assertIterator($this->toAbsolute(array(
+            $this->assertIterator($this->toAbsolute([
                 'foo bar',
                 'test.php',
                 'test.py',
@@ -1242,7 +1242,7 @@ public function testIgnoredAccessDeniedException()
                 'qux_10_2.php',
                 'qux_12_0.php',
                 'qux_2_0.php',
-                )
+                ]
             ), $finder->getIterator());
         }
 
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/DateRangeFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/DateRangeFilterIteratorTest.php
index ade1a41a01c2..2d8cfb30bd90 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/DateRangeFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/DateRangeFilterIteratorTest.php
@@ -32,7 +32,7 @@ public function testAccept($size, $expected)
 
     public function getAcceptData()
     {
-        $since20YearsAgo = array(
+        $since20YearsAgo = [
             '.git',
             'test.py',
             'foo',
@@ -54,9 +54,9 @@ public function getAcceptData()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
-        $since2MonthsAgo = array(
+        $since2MonthsAgo = [
             '.git',
             'test.py',
             'foo',
@@ -76,17 +76,17 @@ public function getAcceptData()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
-        $untilLastMonth = array(
+        $untilLastMonth = [
             'foo/bar.tmp',
             'test.php',
-        );
+        ];
 
-        return array(
-            array(array(new DateComparator('since 20 years ago')), $this->toAbsolute($since20YearsAgo)),
-            array(array(new DateComparator('since 2 months ago')), $this->toAbsolute($since2MonthsAgo)),
-            array(array(new DateComparator('until last month')), $this->toAbsolute($untilLastMonth)),
-        );
+        return [
+            [[new DateComparator('since 20 years ago')], $this->toAbsolute($since20YearsAgo)],
+            [[new DateComparator('since 2 months ago')], $this->toAbsolute($since2MonthsAgo)],
+            [[new DateComparator('until last month')], $this->toAbsolute($untilLastMonth)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/DepthRangeFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/DepthRangeFilterIteratorTest.php
index 3a403cb9559e..ef4fa2e9ac8d 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/DepthRangeFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/DepthRangeFilterIteratorTest.php
@@ -32,7 +32,7 @@ public function testAccept($minDepth, $maxDepth, $expected)
 
     public function getAcceptData()
     {
-        $lessThan1 = array(
+        $lessThan1 = [
             '.git',
             'test.py',
             'foo',
@@ -48,9 +48,9 @@ public function getAcceptData()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
-        $lessThanOrEqualTo1 = array(
+        $lessThanOrEqualTo1 = [
             '.git',
             'test.py',
             'foo',
@@ -72,32 +72,32 @@ public function getAcceptData()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
-        $graterThanOrEqualTo1 = array(
+        $graterThanOrEqualTo1 = [
             'toto/.git',
             'foo/bar.tmp',
             '.foo/.bar',
             '.foo/bar',
             'qux/baz_100_1.py',
             'qux/baz_1_2.py',
-        );
+        ];
 
-        $equalTo1 = array(
+        $equalTo1 = [
             'toto/.git',
             'foo/bar.tmp',
             '.foo/.bar',
             '.foo/bar',
             'qux/baz_100_1.py',
             'qux/baz_1_2.py',
-        );
+        ];
 
-        return array(
-            array(0, 0, $this->toAbsolute($lessThan1)),
-            array(0, 1, $this->toAbsolute($lessThanOrEqualTo1)),
-            array(2, PHP_INT_MAX, array()),
-            array(1, PHP_INT_MAX, $this->toAbsolute($graterThanOrEqualTo1)),
-            array(1, 1, $this->toAbsolute($equalTo1)),
-        );
+        return [
+            [0, 0, $this->toAbsolute($lessThan1)],
+            [0, 1, $this->toAbsolute($lessThanOrEqualTo1)],
+            [2, PHP_INT_MAX, []],
+            [1, PHP_INT_MAX, $this->toAbsolute($graterThanOrEqualTo1)],
+            [1, 1, $this->toAbsolute($equalTo1)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/ExcludeDirectoryFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/ExcludeDirectoryFilterIteratorTest.php
index c977b0cfdb38..1729766fe4bd 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/ExcludeDirectoryFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/ExcludeDirectoryFilterIteratorTest.php
@@ -30,7 +30,7 @@ public function testAccept($directories, $expected)
 
     public function getAcceptData()
     {
-        $foo = array(
+        $foo = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -50,9 +50,9 @@ public function getAcceptData()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
-        $fo = array(
+        $fo = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -74,9 +74,9 @@ public function getAcceptData()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
-        $toto = array(
+        $toto = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -96,12 +96,12 @@ public function getAcceptData()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
-        return array(
-            array(array('foo'), $this->toAbsolute($foo)),
-            array(array('fo'), $this->toAbsolute($fo)),
-            array(array('toto/'), $this->toAbsolute($toto)),
-        );
+        return [
+            [['foo'], $this->toAbsolute($foo)],
+            [['fo'], $this->toAbsolute($fo)],
+            [['toto/'], $this->toAbsolute($toto)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/FileTypeFilterIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/FileTypeFilterIteratorTest.php
index 0ecd8dfe7346..49616ce07cfb 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/FileTypeFilterIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/FileTypeFilterIteratorTest.php
@@ -29,7 +29,7 @@ public function testAccept($mode, $expected)
 
     public function getAcceptData()
     {
-        $onlyFiles = array(
+        $onlyFiles = [
             'test.py',
             'foo/bar.tmp',
             'test.php',
@@ -45,21 +45,21 @@ public function getAcceptData()
             'qux_10_2.php',
             'qux_12_0.php',
             'qux_2_0.php',
-        );
+        ];
 
-        $onlyDirectories = array(
+        $onlyDirectories = [
             '.git',
             'foo',
             'qux',
             'toto',
             'toto/.git',
             '.foo',
-        );
+        ];
 
-        return array(
-            array(FileTypeFilterIterator::ONLY_FILES, $this->toAbsolute($onlyFiles)),
-            array(FileTypeFilterIterator::ONLY_DIRECTORIES, $this->toAbsolute($onlyDirectories)),
-        );
+        return [
+            [FileTypeFilterIterator::ONLY_FILES, $this->toAbsolute($onlyFiles)],
+            [FileTypeFilterIterator::ONLY_DIRECTORIES, $this->toAbsolute($onlyDirectories)],
+        ];
     }
 }
 
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/RealIteratorTestCase.php b/src/Symfony/Component/Finder/Tests/Iterator/RealIteratorTestCase.php
index 9aa68ea20d08..bd14167ab833 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/RealIteratorTestCase.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/RealIteratorTestCase.php
@@ -20,7 +20,7 @@ public static function setUpBeforeClass()
     {
         self::$tmpDir = realpath(sys_get_temp_dir()).\DIRECTORY_SEPARATOR.'symfony_finder';
 
-        self::$files = array(
+        self::$files = [
             '.git/',
             '.foo/',
             '.foo/.bar',
@@ -42,7 +42,7 @@ public static function setUpBeforeClass()
             'qux/',
             'qux/baz_1_2.py',
             'qux/baz_100_1.py',
-        );
+        ];
 
         self::$files = self::toAbsolute(self::$files);
 
@@ -97,7 +97,7 @@ protected static function toAbsolute($files = null)
         }
 
         if (\is_array($files)) {
-            $f = array();
+            $f = [];
             foreach ($files as $file) {
                 if (\is_array($file)) {
                     $f[] = self::toAbsolute($file);
@@ -118,7 +118,7 @@ protected static function toAbsolute($files = null)
 
     protected static function toAbsoluteFixtures($files)
     {
-        $f = array();
+        $f = [];
         foreach ($files as $file) {
             $f[] = realpath(__DIR__.\DIRECTORY_SEPARATOR.'..'.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.$file);
         }
diff --git a/src/Symfony/Component/Finder/Tests/Iterator/SortableIteratorTest.php b/src/Symfony/Component/Finder/Tests/Iterator/SortableIteratorTest.php
index 33687c5214c6..e9dad1e056b3 100644
--- a/src/Symfony/Component/Finder/Tests/Iterator/SortableIteratorTest.php
+++ b/src/Symfony/Component/Finder/Tests/Iterator/SortableIteratorTest.php
@@ -18,7 +18,7 @@ class SortableIteratorTest extends RealIteratorTestCase
     public function testConstructor()
     {
         try {
-            new SortableIterator(new Iterator(array()), 'foobar');
+            new SortableIterator(new Iterator([]), 'foobar');
             $this->fail('__construct() throws an \InvalidArgumentException exception if the mode is not valid');
         } catch (\Exception $e) {
             $this->assertInstanceOf('InvalidArgumentException', $e, '__construct() throws an \InvalidArgumentException exception if the mode is not valid');
@@ -73,7 +73,7 @@ public function testAccept($mode, $expected)
 
     public function getAcceptData()
     {
-        $sortByName = array(
+        $sortByName = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -95,9 +95,9 @@ public function getAcceptData()
             'test.py',
             'toto',
             'toto/.git',
-        );
+        ];
 
-        $sortByType = array(
+        $sortByType = [
             '.foo',
             '.git',
             'foo',
@@ -119,13 +119,13 @@ public function getAcceptData()
             'qux_2_0.php',
             'test.php',
             'test.py',
-        );
+        ];
 
-        $sortByAccessedTime = array(
+        $sortByAccessedTime = [
             // For these two files the access time was set to 2005-10-15
-            array('foo/bar.tmp', 'test.php'),
+            ['foo/bar.tmp', 'test.php'],
             // These files were created more or less at the same time
-            array(
+            [
                 '.git',
                 '.foo',
                 '.foo/.bar',
@@ -144,13 +144,13 @@ public function getAcceptData()
                 'qux_10_2.php',
                 'qux_12_0.php',
                 'qux_2_0.php',
-            ),
+            ],
             // This file was accessed after sleeping for 1 sec
-            array('.bar'),
-        );
+            ['.bar'],
+        ];
 
-        $sortByChangedTime = array(
-            array(
+        $sortByChangedTime = [
+            [
                 '.git',
                 '.foo',
                 '.foo/.bar',
@@ -170,13 +170,13 @@ public function getAcceptData()
                 'qux_10_2.php',
                 'qux_12_0.php',
                 'qux_2_0.php',
-            ),
-            array('test.php'),
-            array('test.py'),
-        );
+            ],
+            ['test.php'],
+            ['test.py'],
+        ];
 
-        $sortByModifiedTime = array(
-            array(
+        $sortByModifiedTime = [
+            [
                 '.git',
                 '.foo',
                 '.foo/.bar',
@@ -196,12 +196,12 @@ public function getAcceptData()
                 'qux_10_2.php',
                 'qux_12_0.php',
                 'qux_2_0.php',
-            ),
-            array('test.php'),
-            array('test.py'),
-        );
+            ],
+            ['test.php'],
+            ['test.py'],
+        ];
 
-        $sortByNameNatural = array(
+        $sortByNameNatural = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -223,9 +223,9 @@ public function getAcceptData()
             'test.py',
             'toto',
             'toto/.git',
-        );
+        ];
 
-        $customComparison = array(
+        $customComparison = [
             '.bar',
             '.foo',
             '.foo/.bar',
@@ -247,16 +247,16 @@ public function getAcceptData()
             'test.py',
             'toto',
             'toto/.git',
-        );
+        ];
 
-        return array(
-            array(SortableIterator::SORT_BY_NAME, $this->toAbsolute($sortByName)),
-            array(SortableIterator::SORT_BY_TYPE, $this->toAbsolute($sortByType)),
-            array(SortableIterator::SORT_BY_ACCESSED_TIME, $this->toAbsolute($sortByAccessedTime)),
-            array(SortableIterator::SORT_BY_CHANGED_TIME, $this->toAbsolute($sortByChangedTime)),
-            array(SortableIterator::SORT_BY_MODIFIED_TIME, $this->toAbsolute($sortByModifiedTime)),
-            array(SortableIterator::SORT_BY_NAME_NATURAL, $this->toAbsolute($sortByNameNatural)),
-            array(function (\SplFileInfo $a, \SplFileInfo $b) { return strcmp($a->getRealPath(), $b->getRealPath()); }, $this->toAbsolute($customComparison)),
-        );
+        return [
+            [SortableIterator::SORT_BY_NAME, $this->toAbsolute($sortByName)],
+            [SortableIterator::SORT_BY_TYPE, $this->toAbsolute($sortByType)],
+            [SortableIterator::SORT_BY_ACCESSED_TIME, $this->toAbsolute($sortByAccessedTime)],
+            [SortableIterator::SORT_BY_CHANGED_TIME, $this->toAbsolute($sortByChangedTime)],
+            [SortableIterator::SORT_BY_MODIFIED_TIME, $this->toAbsolute($sortByModifiedTime)],
+            [SortableIterator::SORT_BY_NAME_NATURAL, $this->toAbsolute($sortByNameNatural)],
+            [function (\SplFileInfo $a, \SplFileInfo $b) { return strcmp($a->getRealPath(), $b->getRealPath()); }, $this->toAbsolute($customComparison)],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Form/AbstractExtension.php b/src/Symfony/Component/Form/AbstractExtension.php
index bce5c03676f2..5b437344e894 100644
--- a/src/Symfony/Component/Form/AbstractExtension.php
+++ b/src/Symfony/Component/Form/AbstractExtension.php
@@ -176,7 +176,7 @@ private function initTypeExtensions()
             }
 
             if (method_exists($extension, 'getExtendedTypes')) {
-                $extendedTypes = array();
+                $extendedTypes = [];
 
                 foreach ($extension::getExtendedTypes() as $extendedType) {
                     $extendedTypes[] = $extendedType;
@@ -184,7 +184,7 @@ private function initTypeExtensions()
             } else {
                 @trigger_error(sprintf('Not implementing the static getExtendedTypes() method in %s when implementing the %s is deprecated since Symfony 4.2. The method will be added to the interface in 5.0.', \get_class($extension), FormTypeExtensionInterface::class), E_USER_DEPRECATED);
 
-                $extendedTypes = array($extension->getExtendedType());
+                $extendedTypes = [$extension->getExtendedType()];
             }
 
             foreach ($extendedTypes as $extendedType) {
diff --git a/src/Symfony/Component/Form/Command/DebugCommand.php b/src/Symfony/Component/Form/Command/DebugCommand.php
index 2ab3db2dde12..32c9b26f33de 100644
--- a/src/Symfony/Component/Form/Command/DebugCommand.php
+++ b/src/Symfony/Component/Form/Command/DebugCommand.php
@@ -200,7 +200,7 @@ private function getCoreTypes()
 
     private function filterTypesByDeprecated(array $types): array
     {
-        $typesWithDeprecatedOptions = array();
+        $typesWithDeprecatedOptions = [];
         foreach ($types as $class) {
             $optionsResolver = $this->formRegistry->getType($class)->getOptionsResolver();
             foreach ($optionsResolver->getDefinedOptions() as $option) {
diff --git a/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php b/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
index dda755250cc0..7add269e308a 100644
--- a/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
+++ b/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
@@ -32,20 +32,20 @@ abstract class Descriptor implements DescriptorInterface
     /** @var OutputStyle */
     protected $output;
     protected $type;
-    protected $ownOptions = array();
-    protected $overriddenOptions = array();
-    protected $parentOptions = array();
-    protected $extensionOptions = array();
-    protected $requiredOptions = array();
-    protected $parents = array();
-    protected $extensions = array();
+    protected $ownOptions = [];
+    protected $overriddenOptions = [];
+    protected $parentOptions = [];
+    protected $extensionOptions = [];
+    protected $requiredOptions = [];
+    protected $parents = [];
+    protected $extensions = [];
 
     /**
      * {@inheritdoc}
      */
-    public function describe(OutputInterface $output, $object, array $options = array())
+    public function describe(OutputInterface $output, $object, array $options = [])
     {
-        $this->output = $output instanceof OutputStyle ? $output : new SymfonyStyle(new ArrayInput(array()), $output);
+        $this->output = $output instanceof OutputStyle ? $output : new SymfonyStyle(new ArrayInput([]), $output);
 
         switch (true) {
             case null === $object:
@@ -64,14 +64,14 @@ public function describe(OutputInterface $output, $object, array $options = arra
 
     abstract protected function describeDefaults(array $options);
 
-    abstract protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = array());
+    abstract protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = []);
 
     abstract protected function describeOption(OptionsResolver $optionsResolver, array $options);
 
     protected function collectOptions(ResolvedFormTypeInterface $type)
     {
-        $this->parents = array();
-        $this->extensions = array();
+        $this->parents = [];
+        $this->extensions = [];
 
         if (null !== $type->getParent()) {
             $optionsResolver = clone $this->getParentOptionsResolver($type->getParent());
@@ -83,7 +83,7 @@ protected function collectOptions(ResolvedFormTypeInterface $type)
         $this->ownOptions = array_diff($ownOptionsResolver->getDefinedOptions(), $optionsResolver->getDefinedOptions());
         $overriddenOptions = array_intersect(array_merge($ownOptionsResolver->getDefinedOptions(), $ownOptionsResolver->getUndefinedOptions()), $optionsResolver->getDefinedOptions());
 
-        $this->parentOptions = array();
+        $this->parentOptions = [];
         foreach ($this->parents as $class => $parentOptions) {
             $this->overriddenOptions[$class] = array_intersect($overriddenOptions, $parentOptions);
             $this->parentOptions[$class] = array_diff($parentOptions, $overriddenOptions);
@@ -91,7 +91,7 @@ protected function collectOptions(ResolvedFormTypeInterface $type)
 
         $type->getInnerType()->configureOptions($optionsResolver);
         $this->collectTypeExtensionsOptions($type, $optionsResolver);
-        $this->extensionOptions = array();
+        $this->extensionOptions = [];
         foreach ($this->extensions as $class => $extensionOptions) {
             $this->overriddenOptions[$class] = array_intersect($overriddenOptions, $extensionOptions);
             $this->extensionOptions[$class] = array_diff($extensionOptions, $overriddenOptions);
@@ -108,21 +108,21 @@ protected function collectOptions(ResolvedFormTypeInterface $type)
 
     protected function getOptionDefinition(OptionsResolver $optionsResolver, $option)
     {
-        $definition = array(
+        $definition = [
             'required' => $optionsResolver->isRequired($option),
             'deprecated' => $optionsResolver->isDeprecated($option),
-        );
+        ];
 
         $introspector = new OptionsResolverIntrospector($optionsResolver);
 
-        $map = array(
+        $map = [
             'default' => 'getDefault',
             'lazy' => 'getLazyClosures',
             'allowedTypes' => 'getAllowedTypes',
             'allowedValues' => 'getAllowedValues',
             'normalizer' => 'getNormalizer',
             'deprecationMessage' => 'getDeprecationMessage',
-        );
+        ];
 
         foreach ($map as $key => $method) {
             try {
@@ -133,7 +133,7 @@ protected function getOptionDefinition(OptionsResolver $optionsResolver, $option
         }
 
         if (isset($definition['deprecationMessage']) && \is_string($definition['deprecationMessage'])) {
-            $definition['deprecationMessage'] = strtr($definition['deprecationMessage'], array('%name%' => $option));
+            $definition['deprecationMessage'] = strtr($definition['deprecationMessage'], ['%name%' => $option]);
         }
 
         return $definition;
@@ -141,7 +141,7 @@ protected function getOptionDefinition(OptionsResolver $optionsResolver, $option
 
     protected function filterOptionsByDeprecated(ResolvedFormTypeInterface $type)
     {
-        $deprecatedOptions = array();
+        $deprecatedOptions = [];
         $resolver = $type->getOptionsResolver();
         foreach ($resolver->getDefinedOptions() as $option) {
             if ($resolver->isDeprecated($option)) {
@@ -169,7 +169,7 @@ protected function filterOptionsByDeprecated(ResolvedFormTypeInterface $type)
 
     private function getParentOptionsResolver(ResolvedFormTypeInterface $type)
     {
-        $this->parents[$class = \get_class($type->getInnerType())] = array();
+        $this->parents[$class = \get_class($type->getInnerType())] = [];
 
         if (null !== $type->getParent()) {
             $optionsResolver = clone $this->getParentOptionsResolver($type->getParent());
diff --git a/src/Symfony/Component/Form/Console/Descriptor/JsonDescriptor.php b/src/Symfony/Component/Form/Console/Descriptor/JsonDescriptor.php
index 773d993399a5..31d9aa485e67 100644
--- a/src/Symfony/Component/Form/Console/Descriptor/JsonDescriptor.php
+++ b/src/Symfony/Component/Form/Console/Descriptor/JsonDescriptor.php
@@ -33,7 +33,7 @@ protected function describeDefaults(array $options)
         $this->writeData($data, $options);
     }
 
-    protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = array())
+    protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = [])
     {
         $this->collectOptions($resolvedFormType);
 
@@ -41,22 +41,22 @@ protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedF
             $this->filterOptionsByDeprecated($resolvedFormType);
         }
 
-        $formOptions = array(
+        $formOptions = [
             'own' => $this->ownOptions,
             'overridden' => $this->overriddenOptions,
             'parent' => $this->parentOptions,
             'extension' => $this->extensionOptions,
             'required' => $this->requiredOptions,
-        );
+        ];
         $this->sortOptions($formOptions);
 
-        $data = array(
+        $data = [
             'class' => \get_class($resolvedFormType->getInnerType()),
             'block_prefix' => $resolvedFormType->getInnerType()->getBlockPrefix(),
             'options' => $formOptions,
             'parent_types' => $this->parents,
             'type_extensions' => $this->extensions,
-        );
+        ];
 
         $this->writeData($data, $options);
     }
@@ -65,19 +65,19 @@ protected function describeOption(OptionsResolver $optionsResolver, array $optio
     {
         $definition = $this->getOptionDefinition($optionsResolver, $options['option']);
 
-        $map = array();
+        $map = [];
         if ($definition['deprecated']) {
             $map['deprecated'] = 'deprecated';
             if (\is_string($definition['deprecationMessage'])) {
                 $map['deprecation_message'] = 'deprecationMessage';
             }
         }
-        $map += array(
+        $map += [
             'required' => 'required',
             'default' => 'default',
             'allowed_types' => 'allowedTypes',
             'allowed_values' => 'allowedValues',
-        );
+        ];
         foreach ($map as $label => $name) {
             if (array_key_exists($name, $definition)) {
                 $data[$label] = $definition[$name];
diff --git a/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php b/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
index 1621f9d31c6e..4ea8ab6d834e 100644
--- a/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
@@ -53,7 +53,7 @@ protected function describeDefaults(array $options)
         }
     }
 
-    protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = array())
+    protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedFormType, array $options = [])
     {
         $this->collectOptions($resolvedFormType);
 
@@ -61,20 +61,20 @@ protected function describeResolvedFormType(ResolvedFormTypeInterface $resolvedF
             $this->filterOptionsByDeprecated($resolvedFormType);
         }
 
-        $formOptions = $this->normalizeAndSortOptionsColumns(array_filter(array(
+        $formOptions = $this->normalizeAndSortOptionsColumns(array_filter([
             'own' => $this->ownOptions,
             'overridden' => $this->overriddenOptions,
             'parent' => $this->parentOptions,
             'extension' => $this->extensionOptions,
-        )));
+        ]));
 
         // setting headers and column order
-        $tableHeaders = array_intersect_key(array(
+        $tableHeaders = array_intersect_key([
             'own' => 'Options',
             'overridden' => 'Overridden options',
             'parent' => 'Parent options',
             'extension' => 'Extension options',
-        ), $formOptions);
+        ], $formOptions);
 
         $this->output->title(sprintf('%s (Block prefix: "%s")', \get_class($resolvedFormType->getInnerType()), $resolvedFormType->getInnerType()->getBlockPrefix()));
 
@@ -98,42 +98,42 @@ protected function describeOption(OptionsResolver $optionsResolver, array $optio
         $definition = $this->getOptionDefinition($optionsResolver, $options['option']);
 
         $dump = $this->getDumpFunction();
-        $map = array();
+        $map = [];
         if ($definition['deprecated']) {
-            $map = array(
+            $map = [
                 'Deprecated' => 'deprecated',
                 'Deprecation message' => 'deprecationMessage',
-            );
+            ];
         }
-        $map += array(
+        $map += [
             'Required' => 'required',
             'Default' => 'default',
             'Allowed types' => 'allowedTypes',
             'Allowed values' => 'allowedValues',
             'Normalizer' => 'normalizer',
-        );
-        $rows = array();
+        ];
+        $rows = [];
         foreach ($map as $label => $name) {
             $value = array_key_exists($name, $definition) ? $dump($definition[$name]) : '-';
             if ('default' === $name && isset($definition['lazy'])) {
                 $value = "Value: $value\n\nClosure(s): ".$dump($definition['lazy']);
             }
 
-            $rows[] = array("<info>$label</info>", $value);
+            $rows[] = ["<info>$label</info>", $value];
             $rows[] = new TableSeparator();
         }
         array_pop($rows);
 
         $this->output->title(sprintf('%s (%s)', \get_class($options['type']), $options['option']));
-        $this->output->table(array(), $rows);
+        $this->output->table([], $rows);
     }
 
     private function buildTableRows(array $headers, array $options): array
     {
-        $tableRows = array();
+        $tableRows = [];
         $count = \count(max($options));
         for ($i = 0; $i < $count; ++$i) {
-            $cells = array();
+            $cells = [];
             foreach (array_keys($headers) as $group) {
                 $option = $options[$group][$i] ?? null;
                 if (\is_string($option) && \in_array($option, $this->requiredOptions, true)) {
@@ -161,7 +161,7 @@ private function normalizeAndSortOptionsColumns(array $options)
                 }
 
                 if (!$sorted) {
-                    $options[$group] = array();
+                    $options[$group] = [];
                 } else {
                     $options[$group][] = null;
                 }
@@ -184,15 +184,15 @@ private function normalizeAndSortOptionsColumns(array $options)
     private function getDumpFunction()
     {
         $cloner = new VarCloner();
-        $cloner->addCasters(array('Closure' => function ($c, $a) {
+        $cloner->addCasters(['Closure' => function ($c, $a) {
             $prefix = Caster::PREFIX_VIRTUAL;
 
-            return array(
+            return [
                 $prefix.'parameters' => isset($a[$prefix.'parameters']) ? \count($a[$prefix.'parameters']->value) : 0,
                 $prefix.'file' => $a[$prefix.'file'],
                 $prefix.'line' => $a[$prefix.'line'],
-            );
-        }));
+            ];
+        }]);
         $dumper = new CliDumper(null, null, CliDumper::DUMP_LIGHT_ARRAY | CliDumper::DUMP_COMMA_SEPARATOR);
         $dumper->setColors($this->output->isDecorated());
 
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/FormType.php b/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
index decc9e380db7..31757e288718 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
@@ -81,7 +81,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
         }
 
         $formConfig = $form->getConfig();
-        $view->vars = array_replace($view->vars, array(
+        $view->vars = array_replace($view->vars, [
             'errors' => $form->getErrors(),
             'valid' => $form->isSubmitted() ? $form->isValid() : true,
             'value' => $form->getViewData(),
@@ -95,7 +95,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
             'method' => $formConfig->getMethod(),
             'action' => $formConfig->getAction(),
             'submitted' => $form->isSubmitted(),
-        ));
+        ]);
     }
 
     /**
@@ -138,7 +138,7 @@ public function configureOptions(OptionsResolver $resolver)
             }
 
             return function (FormInterface $form) {
-                return $form->getConfig()->getCompound() ? array() : '';
+                return $form->getConfig()->getCompound() ? [] : '';
             };
         };
 
@@ -157,11 +157,11 @@ public function configureOptions(OptionsResolver $resolver)
 
         // If data is given, the form is locked to that data
         // (independent of its value)
-        $resolver->setDefined(array(
+        $resolver->setDefined([
             'data',
-        ));
+        ]);
 
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'data_class' => $dataClass,
             'empty_data' => $emptyData,
             'trim' => true,
@@ -170,24 +170,24 @@ public function configureOptions(OptionsResolver $resolver)
             'mapped' => true,
             'by_reference' => true,
             'error_bubbling' => $errorBubbling,
-            'label_attr' => array(),
+            'label_attr' => [],
             'inherit_data' => false,
             'compound' => true,
             'method' => 'POST',
             // According to RFC 2396 (http://www.ietf.org/rfc/rfc2396.txt)
             // section 4.2., empty URIs are considered same-document references
             'action' => '',
-            'attr' => array(),
+            'attr' => [],
             'post_max_size_message' => 'The uploaded file was too large. Please try to upload a smaller file.',
             'upload_max_size_message' => $uploadMaxSizeMessage, // internal
             'allow_file_upload' => false,
             'help' => null,
-            'help_attr' => array(),
-        ));
+            'help_attr' => [],
+        ]);
 
         $resolver->setAllowedTypes('label_attr', 'array');
-        $resolver->setAllowedTypes('upload_max_size_message', array('callable'));
-        $resolver->setAllowedTypes('help', array('string', 'null'));
+        $resolver->setAllowedTypes('upload_max_size_message', ['callable']);
+        $resolver->setAllowedTypes('help', ['string', 'null']);
         $resolver->setAllowedTypes('help_attr', 'array');
     }
 
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php b/src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php
index 22f6d9cb352b..af52002ebd18 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php
@@ -31,14 +31,14 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $resolver->setDefaults(array(
+        $resolver->setDefaults([
             'grouping' => false,
             // Integer cast rounds towards 0, so do the same when displaying fractions
             'rounding_mode' => IntegerToLocalizedStringTransformer::ROUND_DOWN,
             'compound' => false,
-        ));
+        ]);
 
-        $resolver->setAllowedValues('rounding_mode', array(
+        $resolver->setAllowedValues('rounding_mode', [
             IntegerToLocalizedStringTransformer::ROUND_FLOOR,
             IntegerToLocalizedStringTransformer::ROUND_DOWN,
             IntegerToLocalizedStringTransformer::ROUND_HALF_DOWN,
@@ -46,10 +46,10 @@ public function configureOptions(OptionsResolver $resolver)
             IntegerToLocalizedStringTransformer::ROUND_HALF_UP,
             IntegerToLocalizedStringTransformer::ROUND_UP,
             IntegerToLocalizedStringTransformer::ROUND_CEILING,
-        ));
+        ]);
 
         $resolver->setDefined('scale');
-        $resolver->setAllowedTypes('scale', array('null', 'int'));
+        $resolver->setAllowedTypes('scale', ['null', 'int']);
         $resolver->setDeprecated('scale');
     }
 
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/TransformationFailureExtension.php b/src/Symfony/Component/Form/Extension/Core/Type/TransformationFailureExtension.php
index 2e98acc0daff..8712fff99bce 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/TransformationFailureExtension.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/TransformationFailureExtension.php
@@ -40,6 +40,6 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(FormType::class);
+        return [FormType::class];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php b/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
index 8d22e7c11eb3..fe25f1f49775 100644
--- a/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
+++ b/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
@@ -74,7 +74,7 @@ public function preSubmit(FormEvent $event)
                     $errorMessage = $this->translator->trans($errorMessage, [], $this->translationDomain);
                 }
 
-                $form->addError(new FormError($errorMessage, $errorMessage, array(), null, $csrfToken));
+                $form->addError(new FormError($errorMessage, $errorMessage, [], null, $csrfToken));
             }
 
             if (\is_array($data)) {
diff --git a/src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php b/src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php
index e3ca321d825a..bc7b616b45fd 100644
--- a/src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php
+++ b/src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php
@@ -117,6 +117,6 @@ public function configureOptions(OptionsResolver $resolver)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(FormType::class);
+        return [FormType::class];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/DataCollector/Type/DataCollectorTypeExtension.php b/src/Symfony/Component/Form/Extension/DataCollector/Type/DataCollectorTypeExtension.php
index 5dffe481cc8b..d25fd132c0e5 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/Type/DataCollectorTypeExtension.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/Type/DataCollectorTypeExtension.php
@@ -48,6 +48,6 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(FormType::class);
+        return [FormType::class];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/DependencyInjection/DependencyInjectionExtension.php b/src/Symfony/Component/Form/Extension/DependencyInjection/DependencyInjectionExtension.php
index 5f4fc3d81d45..a0a82495bde5 100644
--- a/src/Symfony/Component/Form/Extension/DependencyInjection/DependencyInjectionExtension.php
+++ b/src/Symfony/Component/Form/Extension/DependencyInjection/DependencyInjectionExtension.php
@@ -59,13 +59,13 @@ public function getTypeExtensions($name)
                 $extensions[] = $extension;
 
                 if (method_exists($extension, 'getExtendedTypes')) {
-                    $extendedTypes = array();
+                    $extendedTypes = [];
 
                     foreach ($extension::getExtendedTypes() as $extendedType) {
                         $extendedTypes[] = $extendedType;
                     }
                 } else {
-                    $extendedTypes = array($extension->getExtendedType());
+                    $extendedTypes = [$extension->getExtendedType()];
                 }
 
                 // validate the result of getExtendedTypes()/getExtendedType() to ensure it is consistent with the service definition
diff --git a/src/Symfony/Component/Form/Extension/HttpFoundation/Type/FormTypeHttpFoundationExtension.php b/src/Symfony/Component/Form/Extension/HttpFoundation/Type/FormTypeHttpFoundationExtension.php
index c3551d55e02b..33b053b3a3e7 100644
--- a/src/Symfony/Component/Form/Extension/HttpFoundation/Type/FormTypeHttpFoundationExtension.php
+++ b/src/Symfony/Component/Form/Extension/HttpFoundation/Type/FormTypeHttpFoundationExtension.php
@@ -42,6 +42,6 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(FormType::class);
+        return [FormType::class];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php
index 66c27ffc8c0a..9de782ffc99f 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php
@@ -70,6 +70,6 @@ public function configureOptions(OptionsResolver $resolver)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(FormType::class);
+        return [FormType::class];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/RepeatedTypeValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/RepeatedTypeValidatorExtension.php
index d868f8a6cb3d..4bda0b27d1c7 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/RepeatedTypeValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/RepeatedTypeValidatorExtension.php
@@ -41,6 +41,6 @@ public function configureOptions(OptionsResolver $resolver)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(RepeatedType::class);
+        return [RepeatedType::class];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/SubmitTypeValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/SubmitTypeValidatorExtension.php
index ef14faa99b30..ea273d0ad9ca 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/SubmitTypeValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/SubmitTypeValidatorExtension.php
@@ -23,6 +23,6 @@ class SubmitTypeValidatorExtension extends BaseValidatorExtension
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(SubmitType::class);
+        return [SubmitType::class];
     }
 }
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
index 97ffc14bde08..c5b71f903c16 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php
@@ -58,6 +58,6 @@ public function configureOptions(OptionsResolver $resolver)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(FormType::class);
+        return [FormType::class];
     }
 }
diff --git a/src/Symfony/Component/Form/Form.php b/src/Symfony/Component/Form/Form.php
index ff79db648c65..11056ae42583 100644
--- a/src/Symfony/Component/Form/Form.php
+++ b/src/Symfony/Component/Form/Form.php
@@ -808,7 +808,7 @@ public function getErrors($deep = false, $flatten = true)
      */
     public function clearErrors(bool $deep = false): self
     {
-        $this->errors = array();
+        $this->errors = [];
 
         if ($deep) {
             // Clear errors from children
diff --git a/src/Symfony/Component/Form/FormConfigBuilder.php b/src/Symfony/Component/Form/FormConfigBuilder.php
index 5040363e3e3a..344751b15976 100644
--- a/src/Symfony/Component/Form/FormConfigBuilder.php
+++ b/src/Symfony/Component/Form/FormConfigBuilder.php
@@ -82,12 +82,12 @@ class FormConfigBuilder implements FormConfigBuilderInterface
     /**
      * @var array
      */
-    private $viewTransformers = array();
+    private $viewTransformers = [];
 
     /**
      * @var array
      */
-    private $modelTransformers = array();
+    private $modelTransformers = [];
 
     /**
      * @var DataMapperInterface
@@ -117,7 +117,7 @@ class FormConfigBuilder implements FormConfigBuilderInterface
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @var mixed
@@ -175,7 +175,7 @@ class FormConfigBuilder implements FormConfigBuilderInterface
      * @throws InvalidArgumentException if the data class is not a valid class or if
      *                                  the name contains invalid characters
      */
-    public function __construct($name, ?string $dataClass, EventDispatcherInterface $dispatcher, array $options = array())
+    public function __construct($name, ?string $dataClass, EventDispatcherInterface $dispatcher, array $options = [])
     {
         self::validateName($name);
 
@@ -244,7 +244,7 @@ public function resetViewTransformers()
             throw new BadMethodCallException('FormConfigBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
         }
 
-        $this->viewTransformers = array();
+        $this->viewTransformers = [];
 
         return $this;
     }
@@ -276,7 +276,7 @@ public function resetModelTransformers()
             throw new BadMethodCallException('FormConfigBuilder methods cannot be accessed anymore once the builder is turned into a FormConfigInterface instance.');
         }
 
-        $this->modelTransformers = array();
+        $this->modelTransformers = [];
 
         return $this;
     }
diff --git a/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php b/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
index cc549a4bec8c..3f4f3b1bff09 100644
--- a/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
+++ b/src/Symfony/Component/Form/Tests/Command/DebugCommandTest.php
@@ -28,7 +28,7 @@ class DebugCommandTest extends TestCase
     public function testDebugDefaults()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array(), array('decorated' => false));
+        $ret = $tester->execute([], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Built-in form types', $tester->getDisplay());
@@ -36,8 +36,8 @@ public function testDebugDefaults()
 
     public function testDebugDeprecatedDefaults()
     {
-        $tester = $this->createCommandTester(array('Symfony\Component\Form\Tests\Console\Descriptor'), array(TextType::class, FooType::class));
-        $ret = $tester->execute(array('--show-deprecated' => true), array('decorated' => false));
+        $tester = $this->createCommandTester(['Symfony\Component\Form\Tests\Console\Descriptor'], [TextType::class, FooType::class]);
+        $ret = $tester->execute(['--show-deprecated' => true], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertSame(<<<TXT
@@ -60,7 +60,7 @@ public function testDebugDeprecatedDefaults()
     public function testDebugSingleFormType()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('class' => 'FormType'), array('decorated' => false));
+        $ret = $tester->execute(['class' => 'FormType'], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Symfony\Component\Form\Extension\Core\Type\FormType (Block prefix: "form")', $tester->getDisplay());
@@ -69,7 +69,7 @@ public function testDebugSingleFormType()
     public function testDebugFormTypeOption()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('class' => 'FormType', 'option' => 'method'), array('decorated' => false));
+        $ret = $tester->execute(['class' => 'FormType', 'option' => 'method'], ['decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertContains('Symfony\Component\Form\Extension\Core\Type\FormType (method)', $tester->getDisplay());
@@ -82,7 +82,7 @@ public function testDebugFormTypeOption()
     public function testDebugSingleFormTypeNotFound()
     {
         $tester = $this->createCommandTester();
-        $tester->execute(array('class' => 'NonExistentType'), array('decorated' => false, 'interactive' => false));
+        $tester->execute(['class' => 'NonExistentType'], ['decorated' => false, 'interactive' => false]);
     }
 
     public function testDebugAmbiguousFormType()
@@ -102,23 +102,23 @@ public function testDebugAmbiguousFormType()
             $this->setExpectedException(InvalidArgumentException::class, $expectedMessage);
         }
 
-        $tester = $this->createCommandTester(array(
+        $tester = $this->createCommandTester([
             'Symfony\Component\Form\Tests\Fixtures\Debug\A',
             'Symfony\Component\Form\Tests\Fixtures\Debug\B',
-        ));
+        ]);
 
-        $tester->execute(array('class' => 'AmbiguousType'), array('decorated' => false, 'interactive' => false));
+        $tester->execute(['class' => 'AmbiguousType'], ['decorated' => false, 'interactive' => false]);
     }
 
     public function testDebugAmbiguousFormTypeInteractive()
     {
-        $tester = $this->createCommandTester(array(
+        $tester = $this->createCommandTester([
             'Symfony\Component\Form\Tests\Fixtures\Debug\A',
             'Symfony\Component\Form\Tests\Fixtures\Debug\B',
-        ));
+        ]);
 
-        $tester->setInputs(array(0));
-        $tester->execute(array('class' => 'AmbiguousType'), array('decorated' => false, 'interactive' => true));
+        $tester->setInputs([0]);
+        $tester->execute(['class' => 'AmbiguousType'], ['decorated' => false, 'interactive' => true]);
 
         $this->assertEquals(0, $tester->getStatusCode(), 'Returns 0 in case of success');
         $output = $tester->getDisplay(true);
@@ -141,12 +141,12 @@ public function testDebugAmbiguousFormTypeInteractive()
      */
     public function testDebugInvalidFormType()
     {
-        $this->createCommandTester()->execute(array('class' => 'test'));
+        $this->createCommandTester()->execute(['class' => 'test']);
     }
 
-    private function createCommandTester(array $namespaces = array('Symfony\Component\Form\Extension\Core\Type'), array $types = array())
+    private function createCommandTester(array $namespaces = ['Symfony\Component\Form\Extension\Core\Type'], array $types = [])
     {
-        $formRegistry = new FormRegistry(array(), new ResolvedFormTypeFactory());
+        $formRegistry = new FormRegistry([], new ResolvedFormTypeFactory());
         $command = new DebugCommand($formRegistry, $namespaces, $types);
         $application = new Application();
         $application->add($command);
@@ -166,11 +166,11 @@ public function configureOptions(OptionsResolver $resolver)
             $foo = $options['foo'];
 
             return function (FormInterface $form) use ($foo) {
-                return $form->getConfig()->getCompound() ? array($foo) : $foo;
+                return $form->getConfig()->getCompound() ? [$foo] : $foo;
             };
         });
         $resolver->setAllowedTypes('foo', 'string');
-        $resolver->setAllowedValues('foo', array('bar', 'baz'));
+        $resolver->setAllowedValues('foo', ['bar', 'baz']);
         $resolver->setNormalizer('foo', function (Options $options, $value) {
             return (string) $value;
         });
diff --git a/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php b/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
index 37831608a5d4..2ace5eef3763 100644
--- a/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
+++ b/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
@@ -69,28 +69,28 @@ public function testDescribeOption(OptionsResolver $optionsResolver, array $opti
 
     public function getDescribeDefaultsTestData()
     {
-        $options['core_types'] = array('Symfony\Component\Form\Extension\Core\Type\FormType');
-        $options['service_types'] = array('Symfony\Bridge\Doctrine\Form\Type\EntityType');
-        $options['extensions'] = array('Symfony\Component\Form\Extension\Csrf\Type\FormTypeCsrfExtension');
-        $options['guessers'] = array('Symfony\Component\Form\Extension\Validator\ValidatorTypeGuesser');
+        $options['core_types'] = ['Symfony\Component\Form\Extension\Core\Type\FormType'];
+        $options['service_types'] = ['Symfony\Bridge\Doctrine\Form\Type\EntityType'];
+        $options['extensions'] = ['Symfony\Component\Form\Extension\Csrf\Type\FormTypeCsrfExtension'];
+        $options['guessers'] = ['Symfony\Component\Form\Extension\Validator\ValidatorTypeGuesser'];
         $options['decorated'] = false;
         $options['show_deprecated'] = false;
-        yield array(null, $options, 'defaults_1');
+        yield [null, $options, 'defaults_1'];
 
-        $options['core_types'] = array();
-        $options['service_types'] = array(FooType::class);
+        $options['core_types'] = [];
+        $options['service_types'] = [FooType::class];
         $options['show_deprecated'] = true;
-        yield array(null, $options, 'types_with_deprecated_options');
+        yield [null, $options, 'types_with_deprecated_options'];
     }
 
     public function getDescribeResolvedFormTypeTestData()
     {
-        $typeExtensions = array(new FormTypeCsrfExtension(new CsrfTokenManager()));
+        $typeExtensions = [new FormTypeCsrfExtension(new CsrfTokenManager())];
         $parent = new ResolvedFormType(new FormType(), $typeExtensions);
 
-        yield array(new ResolvedFormType(new ChoiceType(), array(), $parent), array('decorated' => false, 'show_deprecated' => false), 'resolved_form_type_1');
-        yield array(new ResolvedFormType(new FormType()), array('decorated' => false, 'show_deprecated' => false), 'resolved_form_type_2');
-        yield array(new ResolvedFormType(new FooType(), array(), $parent), array('decorated' => false, 'show_deprecated' => true), 'deprecated_options_of_type');
+        yield [new ResolvedFormType(new ChoiceType(), [], $parent), ['decorated' => false, 'show_deprecated' => false], 'resolved_form_type_1'];
+        yield [new ResolvedFormType(new FormType()), ['decorated' => false, 'show_deprecated' => false], 'resolved_form_type_2'];
+        yield [new ResolvedFormType(new FooType(), [], $parent), ['decorated' => false, 'show_deprecated' => true], 'deprecated_options_of_type'];
     }
 
     public function getDescribeOptionTestData()
@@ -99,24 +99,24 @@ public function getDescribeOptionTestData()
         $options['decorated'] = false;
         $options['show_deprecated'] = false;
 
-        $resolvedType = new ResolvedFormType(new ChoiceType(), array(), $parent);
+        $resolvedType = new ResolvedFormType(new ChoiceType(), [], $parent);
         $options['type'] = $resolvedType->getInnerType();
         $options['option'] = 'choice_translation_domain';
-        yield array($resolvedType->getOptionsResolver(), $options, 'default_option_with_normalizer');
+        yield [$resolvedType->getOptionsResolver(), $options, 'default_option_with_normalizer'];
 
-        $resolvedType = new ResolvedFormType(new FooType(), array(), $parent);
+        $resolvedType = new ResolvedFormType(new FooType(), [], $parent);
         $options['type'] = $resolvedType->getInnerType();
         $options['option'] = 'foo';
-        yield array($resolvedType->getOptionsResolver(), $options, 'required_option_with_allowed_values');
+        yield [$resolvedType->getOptionsResolver(), $options, 'required_option_with_allowed_values'];
 
         $options['option'] = 'empty_data';
-        yield array($resolvedType->getOptionsResolver(), $options, 'overridden_option_with_default_closures');
+        yield [$resolvedType->getOptionsResolver(), $options, 'overridden_option_with_default_closures'];
 
-        $resolvedType = new ResolvedFormType(new FooType(), array(), $parent);
+        $resolvedType = new ResolvedFormType(new FooType(), [], $parent);
         $options['type'] = $resolvedType->getInnerType();
         $options['option'] = 'bar';
         $options['show_deprecated'] = true;
-        yield array($resolvedType->getOptionsResolver(), $options, 'deprecated_option');
+        yield [$resolvedType->getOptionsResolver(), $options, 'deprecated_option'];
     }
 
     abstract protected function getDescriptor();
@@ -126,7 +126,7 @@ abstract protected function getFormat();
     private function getObjectDescription($object, array $options)
     {
         $output = new BufferedOutput(BufferedOutput::VERBOSITY_NORMAL, $options['decorated']);
-        $io = new SymfonyStyle(new ArrayInput(array()), $output);
+        $io = new SymfonyStyle(new ArrayInput([]), $output);
 
         $this->getDescriptor()->describe($io, $object, $options);
 
@@ -155,11 +155,11 @@ public function configureOptions(OptionsResolver $resolver)
             $foo = $options['foo'];
 
             return function (FormInterface $form) use ($foo) {
-                return $form->getConfig()->getCompound() ? array($foo) : $foo;
+                return $form->getConfig()->getCompound() ? [$foo] : $foo;
             };
         });
         $resolver->setAllowedTypes('foo', 'string');
-        $resolver->setAllowedValues('foo', array('bar', 'baz'));
+        $resolver->setAllowedValues('foo', ['bar', 'baz']);
         $resolver->setNormalizer('foo', function (Options $options, $value) {
             return (string) $value;
         });
diff --git a/src/Symfony/Component/Form/Tests/DependencyInjection/FormPassTest.php b/src/Symfony/Component/Form/Tests/DependencyInjection/FormPassTest.php
index debbddfdb3f1..1b202b5df126 100644
--- a/src/Symfony/Component/Form/Tests/DependencyInjection/FormPassTest.php
+++ b/src/Symfony/Component/Form/Tests/DependencyInjection/FormPassTest.php
@@ -59,10 +59,10 @@ public function testAddTaggedTypes()
         $extDefinition = $container->getDefinition('form.extension');
 
         $this->assertEquals(
-            (new Definition(ServiceLocator::class, array(array(
+            (new Definition(ServiceLocator::class, [[
                 __CLASS__.'_Type1' => new ServiceClosureArgument(new Reference('my.type1')),
                 __CLASS__.'_Type2' => new ServiceClosureArgument(new Reference('my.type2')),
-            ))))->addTag('container.service_locator')->setPublic(false),
+            ]]))->addTag('container.service_locator')->setPublic(false),
             $extDefinition->getArgument(0)
         );
     }
@@ -81,10 +81,10 @@ public function testAddTaggedTypesToDebugCommand()
         $cmdDefinition = $container->getDefinition('console.command.form_debug');
 
         $this->assertEquals(
-            array(
+            [
                 'Symfony\Component\Form\Extension\Core\Type',
                 __NAMESPACE__,
-            ),
+            ],
             $cmdDefinition->getArgument(1)
         );
     }
@@ -110,83 +110,83 @@ public function testAddTaggedTypeExtensions(array $extensions, array $expectedRe
 
     public function addTaggedTypeExtensionsDataProvider()
     {
-        return array(
-            array(
-                array(
-                    Type1TypeExtension::class => array(
+        return [
+            [
+                [
+                    Type1TypeExtension::class => [
                         'class' => Type1TypeExtension::class,
-                        'tag' => array('extended_type' => 'type1'),
-                    ),
-                    Type1Type2TypeExtension::class => array(
+                        'tag' => ['extended_type' => 'type1'],
+                    ],
+                    Type1Type2TypeExtension::class => [
                         'class' => Type1Type2TypeExtension::class,
-                        'tag' => array('extended_type' => 'type2'),
-                    ),
-                ),
-                array(
-                    'type1' => new IteratorArgument(array(new Reference(Type1TypeExtension::class))),
-                    'type2' => new IteratorArgument(array(new Reference(Type1Type2TypeExtension::class))),
-                ),
-            ),
-            array(
-                array(
-                    Type1TypeExtension::class => array(
+                        'tag' => ['extended_type' => 'type2'],
+                    ],
+                ],
+                [
+                    'type1' => new IteratorArgument([new Reference(Type1TypeExtension::class)]),
+                    'type2' => new IteratorArgument([new Reference(Type1Type2TypeExtension::class)]),
+                ],
+            ],
+            [
+                [
+                    Type1TypeExtension::class => [
                         'class' => Type1TypeExtension::class,
-                        'tag' => array(),
-                    ),
-                    Type1Type2TypeExtension::class => array(
+                        'tag' => [],
+                    ],
+                    Type1Type2TypeExtension::class => [
                         'class' => Type1Type2TypeExtension::class,
-                        'tag' => array(),
-                    ),
-                ),
-                array(
-                    'type1' => new IteratorArgument(array(
+                        'tag' => [],
+                    ],
+                ],
+                [
+                    'type1' => new IteratorArgument([
                         new Reference(Type1TypeExtension::class),
                         new Reference(Type1Type2TypeExtension::class),
-                    )),
-                    'type2' => new IteratorArgument(array(new Reference(Type1Type2TypeExtension::class))),
-                ),
-            ),
-            array(
-                array(
-                    'my.type_extension1' => array(
+                    ]),
+                    'type2' => new IteratorArgument([new Reference(Type1Type2TypeExtension::class)]),
+                ],
+            ],
+            [
+                [
+                    'my.type_extension1' => [
                         'class' => Type1TypeExte
10000
nsion::class,
-                        'tag' => array('extended_type' => 'type1', 'priority' => 1),
-                    ),
-                    'my.type_extension2' => array(
+                        'tag' => ['extended_type' => 'type1', 'priority' => 1],
+                    ],
+                    'my.type_extension2' => [
                         'class' => Type1TypeExtension::class,
-                        'tag' => array('extended_type' => 'type1', 'priority' => 2),
-                    ),
-                    'my.type_extension3' => array(
+                        'tag' => ['extended_type' => 'type1', 'priority' => 2],
+                    ],
+                    'my.type_extension3' => [
                         'class' => Type1TypeExtension::class,
-                        'tag' => array('extended_type' => 'type1', 'priority' => -1),
-                    ),
-                    'my.type_extension4' => array(
+                        'tag' => ['extended_type' => 'type1', 'priority' => -1],
+                    ],
+                    'my.type_extension4' => [
                         'class' => Type2TypeExtension::class,
-                        'tag' => array('extended_type' => 'type2', 'priority' => 2),
-                    ),
-                    'my.type_extension5' => array(
+                        'tag' => ['extended_type' => 'type2', 'priority' => 2],
+                    ],
+                    'my.type_extension5' => [
                         'class' => Type2TypeExtension::class,
-                        'tag' => array('extended_type' => 'type2', 'priority' => 1),
-                    ),
-                    'my.type_extension6' => array(
+                        'tag' => ['extended_type' => 'type2', 'priority' => 1],
+                    ],
+                    'my.type_extension6' => [
                         'class' => Type2TypeExtension::class,
-                        'tag' => array('extended_type' => 'type2', 'priority' => 1),
-                    ),
-                ),
-                array(
-                    'type1' => new IteratorArgument(array(
+                        'tag' => ['extended_type' => 'type2', 'priority' => 1],
+                    ],
+                ],
+                [
+                    'type1' => new IteratorArgument([
                         new Reference('my.type_extension2'),
                         new Reference('my.type_extension1'),
                         new Reference('my.type_extension3'),
-                    )),
-                    'type2' => new IteratorArgument(array(
+                    ]),
+                    'type2' => new IteratorArgument([
                         new Reference('my.type_extension4'),
                         new Reference('my.type_extension5'),
                         new Reference('my.type_extension6'),
-                    )),
-                ),
-            ),
-        );
+                    ]),
+                ],
+            ],
+        ];
     }
 
     /**
@@ -214,44 +214,44 @@ public function testAddLegacyTaggedTypeExtensions(array $extensions, array $expe
      */
     public function addLegacyTaggedTypeExtensionsDataProvider()
     {
-        return array(
-            array(
-                array(
-                    'my.type_extension1' => array('extended_type' => 'type1'),
-                    'my.type_extension2' => array('extended_type' => 'type1'),
-                    'my.type_extension3' => array('extended_type' => 'type2'),
-                ),
-                array(
-                    'type1' => new IteratorArgument(array(
+        return [
+            [
+                [
+                    'my.type_extension1' => ['extended_type' => 'type1'],
+                    'my.type_extension2' => ['extended_type' => 'type1'],
+                    'my.type_extension3' => ['extended_type' => 'type2'],
+                ],
+                [
+                    'type1' => new IteratorArgument([
                         new Reference('my.type_extension1'),
                         new Reference('my.type_extension2'),
-                    )),
-                    'type2' => new IteratorArgument(array(new Reference('my.type_extension3'))),
-                ),
-            ),
-            array(
-                array(
-                    'my.type_extension1' => array('extended_type' => 'type1', 'priority' => 1),
-                    'my.type_extension2' => array('extended_type' => 'type1', 'priority' => 2),
-                    'my.type_extension3' => array('extended_type' => 'type1', 'priority' => -1),
-                    'my.type_extension4' => array('extended_type' => 'type2', 'priority' => 2),
-                    'my.type_extension5' => array('extended_type' => 'type2', 'priority' => 1),
-                    'my.type_extension6' => array('extended_type' => 'type2', 'priority' => 1),
-                ),
-                array(
-                    'type1' => new IteratorArgument(array(
+                    ]),
+                    'type2' => new IteratorArgument([new Reference('my.type_extension3')]),
+                ],
+            ],
+            [
+                [
+                    'my.type_extension1' => ['extended_type' => 'type1', 'priority' => 1],
+                    'my.type_extension2' => ['extended_type' => 'type1', 'priority' => 2],
+                    'my.type_extension3' => ['extended_type' => 'type1', 'priority' => -1],
+                    'my.type_extension4' => ['extended_type' => 'type2', 'priority' => 2],
+                    'my.type_extension5' => ['extended_type' => 'type2', 'priority' => 1],
+                    'my.type_extension6' => ['extended_type' => 'type2', 'priority' => 1],
+                ],
+                [
+                    'type1' => new IteratorArgument([
                         new Reference('my.type_extension2'),
                         new Reference('my.type_extension1'),
                         new Reference('my.type_extension3'),
-                    )),
-                    'type2' => new IteratorArgument(array(
+                    ]),
+                    'type2' => new IteratorArgument([
                         new Reference('my.type_extension4'),
                         new Reference('my.type_extension5'),
                         new Reference('my.type_extension6'),
-                    )),
-                ),
-            ),
-        );
+                    ]),
+                ],
+            ],
+        ];
     }
 
     /**
@@ -304,10 +304,10 @@ public function testAddTaggedGuessers()
         $extDefinition = $container->getDefinition('form.extension');
 
         $this->assertEquals(
-            new IteratorArgument(array(
+            new IteratorArgument([
                 new Reference('my.guesser1'),
                 new Reference('my.guesser2'),
-            )),
+            ]),
             $extDefinition->getArgument(2)
         );
     }
@@ -315,7 +315,7 @@ public function testAddTaggedGuessers()
     /**
      * @dataProvider privateTaggedServicesProvider
      */
-    public function testPrivateTaggedServices($id, $class, $tagName, callable $assertion, array $tagAttributes = array())
+    public function testPrivateTaggedServices($id, $class, $tagName, callable $assertion, array $tagAttributes = [])
     {
         $formPass = new FormPass();
         $container = new ContainerBuilder();
@@ -329,8 +329,8 @@ public function testPrivateTaggedServices($id, $class, $tagName, callable $asser
 
     public function privateTaggedServicesProvider()
     {
-        return array(
-            array(
+        return [
+            [
                 'my.type',
                 'stdClass',
                 'form.type',
@@ -340,41 +340,41 @@ function (ContainerBuilder $container) {
                     $this->assertInstanceOf(Reference::class, $formTypes);
 
                     $locator = $container->getDefinition((string) $formTypes);
-                    $expectedLocatorMap = array(
+                    $expectedLocatorMap = [
                         'stdClass' => new ServiceClosureArgument(new Reference('my.type')),
-                    );
+                    ];
 
                     $this->assertInstanceOf(Definition::class, $locator);
                     $this->assertEquals($expectedLocatorMap, $locator->getArgument(0));
                 },
-            ),
-            array(
+            ],
+            [
                 'my.type_extension',
                 Type1TypeExtension::class,
                 'form.type_extension',
                 function (ContainerBuilder $container) {
                     $this->assertEquals(
-                        array('Symfony\Component\Form\Extension\Core\Type\FormType' => new IteratorArgument(array(new Reference('my.type_extension')))),
+                        ['Symfony\Component\Form\Extension\Core\Type\FormType' => new IteratorArgument([new Reference('my.type_extension')])],
                         $container->getDefinition('form.extension')->getArgument(1)
                     );
                 },
-                array('extended_type' => 'Symfony\Component\Form\Extension\Core\Type\FormType'),
-            ),
-            array('my.guesser', 'stdClass', 'form.type_guesser', function (ContainerBuilder $container) {
-                $this->assertEquals(new IteratorArgument(array(new Reference('my.guesser'))), $container->getDefinition('form.extension')->getArgument(2));
-            }),
-        );
+                ['extended_type' => 'Symfony\Component\Form\Extension\Core\Type\FormType'],
+            ],
+            ['my.guesser', 'stdClass', 'form.type_guesser', function (ContainerBuilder $container) {
+                $this->assertEquals(new IteratorArgument([new Reference('my.guesser')]), $container->getDefinition('form.extension')->getArgument(2));
+            }],
+        ];
     }
 
     private function createExtensionDefinition()
     {
         $definition = new Definition('Symfony\Component\Form\Extension\DependencyInjection\DependencyInjectionExtension');
         $definition->setPublic(true);
-        $definition->setArguments(array(
-            array(),
-            array(),
-            new IteratorArgument(array()),
-        ));
+        $definition->setArguments([
+            [],
+            [],
+            new IteratorArgument([]),
+        ]);
 
         return $definition;
     }
@@ -383,11 +383,11 @@ private function createDebugCommandDefinition()
     {
         $definition = new Definition('Symfony\Component\Form\Command\DebugCommand');
         $definition->setPublic(true);
-        $definition->setArguments(array(
+        $definition->setArguments([
             $formRegistry = $this->getMockBuilder(FormRegistryInterface::class)->getMock(),
-            array(),
-            array('Symfony\Component\Form\Extension\Core\Type'),
-        ));
+            [],
+            ['Symfony\Component\Form\Extension\Core\Type'],
+        ]);
 
         return $definition;
     }
@@ -413,7 +413,7 @@ class Type1TypeExtension extends AbstractTypeExtension
 {
     public static function getExtendedTypes(): iterable
     {
-        return array('type1');
+        return ['type1'];
     }
 }
 
@@ -421,7 +421,7 @@ class Type2TypeExtension extends AbstractTypeExtension
 {
     public static function getExtendedTypes(): iterable
     {
-        return array('type2');
+        return ['type2'];
     }
 }
 
@@ -438,6 +438,6 @@ class WithoutExtendedTypesTypeExtension extends AbstractTypeExtension
 {
     public static function getExtendedTypes(): iterable
     {
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Csrf/Type/FormTypeCsrfExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Csrf/Type/FormTypeCsrfExtensionTest.php
index 3838ca21de69..5478db9b831e 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Csrf/Type/FormTypeCsrfExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Csrf/Type/FormTypeCsrfExtensionTest.php
@@ -391,7 +391,7 @@ public function testsTranslateCustomErrorMessage()
         ]);
 
         $errors = $form->getErrors();
-        $expected = new FormError('[trans]Foobar[/trans]', null, array(), null, $csrfToken);
+        $expected = new FormError('[trans]Foobar[/trans]', null, [], null, $csrfToken);
         $expected->setOrigin($form);
 
         $this->assertGreaterThan(0, \count($errors));
diff --git a/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
index 9d8020b07836..0498c764d102 100644
--- a/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/DependencyInjection/DependencyInjectionExtensionTest.php
@@ -29,18 +29,18 @@ public function testGetTypeExtensions()
         $typeExtension3 = new OtherTypeExtension();
         $typeExtension4 = new MultipleTypesTypeExtension();
 
-        $extensions = array(
-            'test' => new \ArrayIterator(array($typeExtension1, $typeExtension2, $typeExtension4)),
-            'other' => new \ArrayIterator(array($typeExtension3, $typeExtension4)),
-        );
+        $extensions = [
+            'test' => new \ArrayIterator([$typeExtension1, $typeExtension2, $typeExtension4]),
+            'other' => new \ArrayIterator([$typeExtension3, $typeExtension4]),
+        ];
 
-        $extension = new DependencyInjectionExtension($container, $extensions, array());
+        $extension = new DependencyInjectionExtension($container, $extensions, []);
 
         $this->assertTrue($extension->hasTypeExtensions('test'));
         $this->assertTrue($extension->hasTypeExtensions('other'));
         $this->assertFalse($extension->hasTypeExtensions('unknown'));
-        $this->assertSame(array($typeExtension1, $typeExtension2, $typeExtension4), $extension->getTypeExtensions('test'));
-        $this->assertSame(array($typeExtension3, $typeExtension4), $extension->getTypeExtensions('other'));
+        $this->assertSame([$typeExtension1, $typeExtension2, $typeExtension4], $extension->getTypeExtensions('test'));
+        $this->assertSame([$typeExtension3, $typeExtension4], $extension->getTypeExtensions('other'));
     }
 
     /**
@@ -51,11 +51,11 @@ public function testThrowExceptionForInvalidExtendedType()
         $container = $this->getMockBuilder('Psr\Container\ContainerInterface')->getMock();
         $container->expects($this->never())->method('get');
 
-        $extensions = array(
-            'unmatched' => new \ArrayIterator(array(new TestTypeExtension())),
-        );
+        $extensions = [
+            'unmatched' => new \ArrayIterator([new TestTypeExtension()]),
+        ];
 
-        $extension = new DependencyInjectionExtension($container, $extensions, array());
+        $extension = new DependencyInjectionExtension($container, $extensions, []);
 
         $extension->getTypeExtensions('unmatched');
     }
@@ -63,7 +63,7 @@ public function testThrowExceptionForInvalidExtendedType()
     public function testGetTypeGuesser()
     {
         $container = $this->createContainerMock();
-        $extension = new DependencyInjectionExtension($container, array(), array($this->getMockBuilder(FormTypeGuesserInterface::class)->getMock()));
+        $extension = new DependencyInjectionExtension($container, [], [$this->getMockBuilder(FormTypeGuesserInterface::class)->getMock()]);
 
         $this->assertInstanceOf(FormTypeGuesserChain::class, $extension->getTypeGuesser());
     }
@@ -71,7 +71,7 @@ public function testGetTypeGuesser()
     public function testGetTypeGuesserReturnsNullWhenNoTypeGuessersHaveBeenConfigured()
     {
         $container = $this->createContainerMock();
-        $extension = new DependencyInjectionExtension($container, array(), array());
+        $extension = new DependencyInjectionExtension($container, [], []);
 
         $this->assertNull($extension->getTypeGuesser());
     }
@@ -79,7 +79,7 @@ public function testGetTypeGuesserReturnsNullWhenNoTypeGuessersHaveBeenConfigure
     private function createContainerMock()
     {
         return $this->getMockBuilder('Psr\Container\ContainerInterface')
-            ->setMethods(array('get', 'has'))
+            ->setMethods(['get', 'has'])
             ->getMock();
     }
 }
@@ -88,7 +88,7 @@ class TestTypeExtension extends AbstractTypeExtension
 {
     public static function getExtendedTypes(): iterable
     {
-        return array('test');
+        return ['test'];
     }
 }
 
@@ -96,7 +96,7 @@ class OtherTypeExtension extends AbstractTypeExtension
 {
     public static function getExtendedTypes(): iterable
     {
-        return array('other');
+        return ['other'];
     }
 }
 
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/ChoiceTypeExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/ChoiceTypeExtension.php
index 97f8980b7a75..34242c5b69bc 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/ChoiceTypeExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/ChoiceTypeExtension.php
@@ -34,6 +34,6 @@ public function configureOptions(OptionsResolver $resolver)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(self::$extendedType);
+        return [self::$extendedType];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBarExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBarExtension.php
index de49bd3ef7ca..fbe1601d5bf4 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBarExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBarExtension.php
@@ -30,6 +30,6 @@ public function getAllowedOptionValues()
 
     public static function getExtendedTypes(): iterable
     {
-        return array(__NAMESPACE__.'\FooType');
+        return [__NAMESPACE__.'\FooType'];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBazExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBazExtension.php
index 1f722776e02f..250c122f9cc2 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBazExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/FooTypeBazExtension.php
@@ -23,6 +23,6 @@ public function buildForm(FormBuilderInterface $builder, array $options)
 
     public static function getExtendedTypes(): iterable
     {
-        return array(__NAMESPACE__.'\FooType');
+        return [__NAMESPACE__.'\FooType'];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/LazyChoiceTypeExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/LazyChoiceTypeExtension.php
index 044464eb94b3..e25d84c8bd74 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/LazyChoiceTypeExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/LazyChoiceTypeExtension.php
@@ -37,6 +37,6 @@ public function configureOptions(OptionsResolver $resolver)
      */
     public static function getExtendedTypes(): iterable
     {
-        return array(self::$extendedType);
+        return [self::$extendedType];
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/TestExtension.php b/src/Symfony/Component/Form/Tests/Fixtures/TestExtension.php
index 0173bae6f9dc..578db1242c5d 100644
--- a/src/Symfony/Component/Form/Tests/Fixtures/TestExtension.php
+++ b/src/Symfony/Component/Form/Tests/Fixtures/TestExtension.php
@@ -18,9 +18,9 @@
 
 class TestExtension implements FormExtensionInterface
 {
-    private $types = array();
+    private $types = [];
 
-    private $extensions = array();
+    private $extensions = [];
 
     private $guesser;
 
@@ -48,7 +48,7 @@ public function addTypeExtension(FormTypeExtensionInterface $extension)
     {
         foreach ($extension::getExtendedTypes() as $type) {
             if (!isset($this->extensions[$type])) {
-                $this->extensions[$type] = array();
+                $this->extensions[$type] = [];
             }
 
             $this->extensions[$type][] = $extension;
@@ -57,7 +57,7 @@ public function addTypeExtension(FormTypeExtensionInterface $extension)
 
     public function getTypeExtensions($name)
     {
-        return isset($this->extensions[$name]) ? $this->extensions[$name] : array();
+        return isset($this->extensions[$name]) ? $this->extensions[$name] : [];
     }
 
     public function hasTypeExtensions($name)
diff --git a/src/Symfony/Component/HttpFoundation/HeaderUtils.php b/src/Symfony/Component/HttpFoundation/HeaderUtils.php
index 570ea1a83ca8..31db1bd0ded9 100644
--- a/src/Symfony/Component/HttpFoundation/HeaderUtils.php
+++ b/src/Symfony/Component/HttpFoundation/HeaderUtils.php
@@ -163,7 +163,7 @@ public static function unquote(string $s): string
      */
     public static function makeDisposition(string $disposition, string $filename, string $filenameFallback = ''): string
     {
-        if (!\in_array($disposition, array(self::DISPOSITION_ATTACHMENT, self::DISPOSITION_INLINE))) {
+        if (!\in_array($disposition, [self::DISPOSITION_ATTACHMENT, self::DISPOSITION_INLINE])) {
             throw new \InvalidArgumentException(sprintf('The disposition must be either "%s" or "%s".', self::DISPOSITION_ATTACHMENT, self::DISPOSITION_INLINE));
         }
 
@@ -186,7 +186,7 @@ public static function makeDisposition(string $disposition, string $filename, st
             throw new \InvalidArgumentException('The filename and the fallback cannot contain the "/" and "\\" characters.');
         }
 
-        $params = array('filename' => $filenameFallback);
+        $params = ['filename' => $filenameFallback];
         if ($filename !== $filenameFallback) {
             $params['filename*'] = "utf-8''".rawurlencode($filename);
         }
diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index c13016e5221d..7f44aab1d5ae 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -52,17 +52,17 @@ class Request
     /**
      * @var string[]
      */
-    protected static $trustedProxies = array();
+    protected static $trustedProxies = [];
 
     /**
      * @var string[]
      */
-    protected static $trustedHostPatterns = array();
+    protected static $trustedHostPatterns = [];
 
     /**
      * @var string[]
      */
-    protected static $trustedHosts = array();
+    protected static $trustedHosts = [];
 
     protected static $httpMethodParameterOverride = false;
 
@@ -197,12 +197,12 @@ class Request
 
     private static $trustedHeaderSet = -1;
 
-    private static $forwardedParams = array(
+    private static $forwardedParams = [
         self::HEADER_X_FORWARDED_FOR => 'for',
         self::HEADER_X_FORWARDED_HOST => 'host',
         self::HEADER_X_FORWARDED_PROTO => 'proto',
         self::HEADER_X_FORWARDED_PORT => 'host',
-    );
+    ];
 
     /**
      * Names for headers that can be trusted when
@@ -213,13 +213,13 @@ class Request
      * The other headers are non-standard, but widely used
      * by popular reverse proxies (like Apache mod_proxy or Amazon EC2).
      */
-    private static $trustedHeaders = array(
+    private static $trustedHeaders = [
         self::HEADER_FORWARDED => 'FORWARDED',
         self::HEADER_X_FORWARDED_FOR => 'X_FORWARDED_FOR',
         self::HEADER_X_FORWARDED_HOST => 'X_FORWARDED_HOST',
         self::HEADER_X_FORWARDED_PROTO => 'X_FORWARDED_PROTO',
         self::HEADER_X_FORWARDED_PORT => 'X_FORWARDED_PORT',
-    );
+    ];
 
     /**
      * @param array                $query      The GET parameters
@@ -230,7 +230,7 @@ class Request
      * @param array                $server     The SERVER parameters
      * @param string|resource|null $content    The raw body data
      */
-    public function __construct(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    public function __construct(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         $this->initialize($query, $request, $attributes, $cookies, $files, $server, $content);
     }
@@ -248,7 +248,7 @@ public function __construct(array $query = array(), array $request = array(), ar
      * @param array                $server     The SERVER parameters
      * @param string|resource|null $content    The raw body data
      */
-    public function initialize(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    public function initialize(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         $this->request = new ParameterBag($request);
         $this->query = new ParameterBag($query);
@@ -278,10 +278,10 @@ public function initialize(array $query = array(), array $request = array(), arr
      */
     public static function createFromGlobals()
     {
-        $request = self::createRequestFromFactory($_GET, $_POST, array(), $_COOKIE, $_FILES, $_SERVER);
+        $request = self::createRequestFromFactory($_GET, $_POST, [], $_COOKIE, $_FILES, $_SERVER);
 
         if (0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded')
-            && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), array('PUT', 'DELETE', 'PATCH'))
+            && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), ['PUT', 'DELETE', 'PATCH'])
         ) {
             parse_str($request->getContent(), $data);
             $request->request = new ParameterBag($data);
@@ -306,9 +306,9 @@ public static function createFromGlobals()
      *
      * @return static
      */
-    public static function create($uri, $method = 'GET', $parameters = array(), $cookies = array(), $files = array(), $server = array(), $content = null)
+    public static function create($uri, $method = 'GET', $parameters = [], $cookies = [], $files = [], $server = [], $content = null)
     {
-        $server = array_replace(array(
+        $server = array_replace([
             'SERVER_NAME' => 'localhost',
             'SERVER_PORT' => 80,
             'HTTP_HOST' => 'localhost',
@@ -321,7 +321,7 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
             'SCRIPT_FILENAME' => '',
             'SERVER_PROTOCOL' => 'HTTP/1.1',
             'REQUEST_TIME' => time(),
-        ), $server);
+        ], $server);
 
         $server['PATH_INFO'] = '';
         $server['REQUEST_METHOD'] = strtoupper($method);
@@ -369,10 +369,10 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
                 // no break
             case 'PATCH':
                 $request = $parameters;
-                $query = array();
+                $query = [];
                 break;
             default:
-                $request = array();
+                $request = [];
                 $query = $parameters;
                 break;
         }
@@ -395,7 +395,7 @@ public static function create($uri, $method = 'GET', $parameters = array(), $coo
         $server['REQUEST_URI'] = $components['path'].('' !== $queryString ? '?'.$queryString : '');
         $server['QUERY_STRING'] = $queryString;
 
-        return self::createRequestFromFactory($query, $request, array(), $cookies, $files, $server, $content);
+        return self::createRequestFromFactory($query, $request, [], $cookies, $files, $server, $content);
     }
 
     /**
@@ -499,7 +499,7 @@ public function __toString()
         }
 
         $cookieHeader = '';
-        $cookies = array();
+        $cookies = [];
 
         foreach ($this->cookies as $k => $v) {
             $cookies[] = $k.'='.$v;
@@ -533,19 +533,19 @@ public function overrideGlobals()
 
         foreach ($this->headers->all() as $key => $value) {
             $key = strtoupper(str_replace('-', '_', $key));
-            if (\in_array($key, array('CONTENT_TYPE', 'CONTENT_LENGTH'))) {
+            if (\in_array($key, ['CONTENT_TYPE', 'CONTENT_LENGTH'])) {
                 $_SERVER[$key] = implode(', ', $value);
             } else {
                 $_SERVER['HTTP_'.$key] = implode(', ', $value);
             }
         }
 
-        $request = array('g' => $_GET, 'p' => $_POST, 'c' => $_COOKIE);
+        $request = ['g' => $_GET, 'p' => $_POST, 'c' => $_COOKIE];
 
         $requestOrder = ini_get('request_order') ?: ini_get('variables_order');
         $requestOrder = preg_replace('#[^cgp]#', '', strtolower($requestOrder)) ?: 'gp';
 
-        $_REQUEST = array(array());
+        $_REQUEST = [[]];
 
         foreach (str_split($requestOrder) as $order) {
             $_REQUEST[] = $request[$order];
@@ -603,7 +603,7 @@ public static function setTrustedHosts(array $hostPatterns)
             return sprintf('{%s}i', $hostPattern);
         }, $hostPatterns);
         // we need to reset trusted hosts on trusted host patterns change
-        self::$trustedHosts = array();
+        self::$trustedHosts = [];
     }
 
     /**
@@ -777,10 +777,10 @@ public function getClientIps()
         $ip = $this->server->get('REMOTE_ADDR');
 
         if (!$this->isFromTrustedProxy()) {
-            return array($ip);
+            return [$ip];
         }
 
-        return $this->getTrustedValues(self::HEADER_X_FORWARDED_FOR, $ip) ?: array($ip);
+        return $this->getTrustedValues(self::HEADER_X_FORWARDED_FOR, $ip) ?: [$ip];
     }
 
     /**
@@ -1114,7 +1114,7 @@ public function getQueryString()
     public function isSecure()
     {
         if ($this->isFromTrustedProxy() && $proto = $this->getTrustedValues(self::HEADER_X_FORWARDED_PROTO)) {
-            return \in_array(strtolower($proto[0]), array('https', 'on', 'ssl', '1'), true);
+            return \in_array(strtolower($proto[0]), ['https', 'on', 'ssl', '1'], true);
         }
 
         $https = $this->server->get('HTTPS');
@@ -1273,7 +1273,7 @@ public static function getMimeTypes($format)
             static::initializeFormats();
         }
 
-        return isset(static::$formats[$format]) ? static::$formats[$format] : array();
+        return isset(static::$formats[$format]) ? static::$formats[$format] : [];
     }
 
     /**
@@ -1316,7 +1316,7 @@ public function setFormat($format, $mimeTypes)
             static::initializeFormats();
         }
 
-        static::$formats[$format] = \is_array($mimeTypes) ? $mimeTypes : array($mimeTypes);
+        static::$formats[$format] = \is_array($mimeTypes) ? $mimeTypes : [$mimeTypes];
     }
 
     /**
@@ -1433,7 +1433,7 @@ public function isMethodSafe(/* $andCacheable = true */)
             throw new \BadMethodCallException('Checking only for cacheable HTTP methods with Symfony\Component\HttpFoundation\Request::isMethodSafe() is not supported.');
         }
 
-        return \in_array($this->getMethod(), array('GET', 'HEAD', 'OPTIONS', 'TRACE'));
+        return \in_array($this->getMethod(), ['GET', 'HEAD', 'OPTIONS', 'TRACE']);
     }
 
     /**
@@ -1443,7 +1443,7 @@ public function isMethodSafe(/* $andCacheable = true */)
      */
     public function isMethodIdempotent()
     {
-        return \in_array($this->getMethod(), array('HEAD', 'GET', 'PUT', 'DELETE', 'TRACE', 'OPTIONS', 'PURGE'));
+        return \in_array($this->getMethod(), ['HEAD', 'GET', 'PUT', 'DELETE', 'TRACE', 'OPTIONS', 'PURGE']);
     }
 
     /**
@@ -1455,7 +1455,7 @@ public function isMethodIdempotent()
      */
     public function isMethodCacheable()
     {
-        return \in_array($this->getMethod(), array('GET', 'HEAD'));
+        return \in_array($this->getMethod(), ['GET', 'HEAD']);
     }
 
     /**
@@ -1566,7 +1566,7 @@ public function getPreferredLanguage(array $locales = null)
             return $locales[0];
         }
 
-        $extendedPreferredLanguages = array();
+        $extendedPreferredLanguages = [];
         foreach ($preferredLanguages as $language) {
             $extendedPreferredLanguages[] = $language;
             if (false !== $position = strpos($language, '_')) {
@@ -1594,7 +1594,7 @@ public function getLanguages()
         }
 
         $languages = AcceptHeader::fromString($this->headers->get('Accept-Language'))->all();
-        $this->languages = array();
+        $this->languages = [];
         foreach ($languages as $lang => $acceptHeaderItem) {
             if (false !== strpos($lang, '-')) {
                 $codes = explode('-', $lang);
@@ -1864,19 +1864,19 @@ protected function preparePathInfo()
      */
     protected static function initializeFormats()
     {
-        static::$formats = array(
-            'html' => array('text/html', 'application/xhtml+xml'),
-            'txt' => array('text/plain'),
-            'js' => array('application/javascript', 'application/x-javascript', 'text/javascript'),
-            'css' => array('text/css'),
-            'json' => array('application/json', 'application/x-json'),
-            'jsonld' => array('application/ld+json'),
-            'xml' => array('text/xml', 'application/xml', 'application/x-xml'),
-            'rdf' => array('application/rdf+xml'),
-            'atom' => array('application/atom+xml'),
-            'rss' => array('application/rss+xml'),
-            'form' => array('application/x-www-form-urlencoded'),
-        );
+        static::$formats = [
+            'html' => ['text/html', 'application/xhtml+xml'],
+            'txt' => ['text/plain'],
+            'js' => ['application/javascript', 'application/x-javascript', 'text/javascript'],
+            'css' => ['text/css'],
+            'json' => ['application/json', 'application/x-json'],
+            'jsonld' => ['application/ld+json'],
+            'xml' => ['text/xml', 'application/xml', 'application/x-xml'],
+            'rdf' => ['application/rdf+xml'],
+            'atom' => ['application/atom+xml'],
+            'rss' => ['application/rss+xml'],
+            'form' => ['application/x-www-form-urlencoded'],
+        ];
     }
 
     private function setPhpDefaultLocale(string $locale)
@@ -1913,7 +1913,7 @@ private function getUrlencodedPrefix(string $string, string $prefix)
         return false;
     }
 
-    private static function createRequestFromFactory(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
+    private static function createRequestFromFactory(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
     {
         if (self::$requestFactory) {
             $request = (self::$requestFactory)($query, $request, $attributes, $cookies, $files, $server, $content);
@@ -1943,8 +1943,8 @@ public function isFromTrustedProxy()
 
     private function getTrustedValues($type, $ip = null)
     {
-        $clientValues = array();
-        $forwardedValues = array();
+        $clientValues = [];
+        $forwardedValues = [];
 
         if ((self::$trustedHeaderSet & $type) && $this->headers->has(self::$trustedHeaders[$type])) {
             foreach (explode(',', $this->headers->get(self::$trustedHeaders[$type])) as $v) {
@@ -1955,7 +1955,7 @@ private function getTrustedValues($type, $ip = null)
         if ((self::$trustedHeaderSet & self::HEADER_FORWARDED) && $this->headers->has(self::$trustedHeaders[self::HEADER_FORWARDED])) {
             $forwarded = $this->headers->get(self::$trustedHeaders[self::HEADER_FORWARDED]);
             $parts = HeaderUtils::split($forwarded, ',;=');
-            $forwardedValues = array();
+            $forwardedValues = [];
             $param = self::$forwardedParams[$type];
             foreach ($parts as $subParts) {
                 if (null === $v = HeaderUtils::combine($subParts)[$param] ?? null) {
@@ -1985,7 +1985,7 @@ private function getTrustedValues($type, $ip = null)
         }
 
         if (!$this->isForwardedValid) {
-            return null !== $ip ? array('0.0.0.0', $ip) : array();
+            return null !== $ip ? ['0.0.0.0', $ip] : [];
         }
         $this->isForwardedValid = false;
 
@@ -1995,7 +1995,7 @@ private function getTrustedValues($type, $ip = null)
     private function normalizeAndFilterClientIps(array $clientIps, $ip)
     {
         if (!$clientIps) {
-            return array();
+            return [];
         }
         $clientIps[] = $ip; // Complete the IP chain with the IP the request actually came from
         $firstTrustedIp = null;
@@ -2031,6 +2031,6 @@ private function normalizeAndFilterClientIps(array $clientIps, $ip)
         }
 
         // Now the IP chain contains only untrusted proxies and the client IP
-        return $clientIps ? array_reverse($clientIps) : array($firstTrustedIp);
+        return $clientIps ? array_reverse($clientIps) : [$firstTrustedIp];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/RequestMatcher.php b/src/Symfony/Component/HttpFoundation/RequestMatcher.php
index ab9434f43fd8..d79c7f2ea292 100644
--- a/src/Symfony/Component/HttpFoundation/RequestMatcher.php
+++ b/src/Symfony/Component/HttpFoundation/RequestMatcher.php
@@ -36,22 +36,22 @@ class RequestMatcher implements RequestMatcherInterface
     /**
      * @var string[]
      */
-    private $methods = array();
+    private $methods = [];
 
     /**
      * @var string[]
      */
-    private $ips = array();
+    private $ips = [];
 
     /**
      * @var array
      */
-    private $attributes = array();
+    private $attributes = [];
 
     /**
      * @var string[]
      */
-    private $schemes = array();
+    private $schemes = [];
 
     /**
      * @param string|null          $path
@@ -61,7 +61,7 @@ class RequestMatcher implements RequestMatcherInterface
      * @param array                $attributes
      * @param string|string[]|null $schemes
      */
-    public function __construct(string $path = null, string $host = null, $methods = null, $ips = null, array $attributes = array(), $schemes = null, int $port = null)
+    public function __construct(string $path = null, string $host = null, $methods = null, $ips = null, array $attributes = [], $schemes = null, int $port = null)
     {
         $this->matchPath($path);
         $this->matchHost($host);
@@ -82,7 +82,7 @@ public function __construct(string $path = null, string $host = null, $methods =
      */
     public function matchScheme($scheme)
     {
-        $this->schemes = null !== $scheme ? array_map('strtolower', (array) $scheme) : array();
+        $this->schemes = null !== $scheme ? array_map('strtolower', (array) $scheme) : [];
     }
 
     /**
@@ -132,7 +132,7 @@ public function matchIp($ip)
      */
     public function matchIps($ips)
     {
-        $this->ips = null !== $ips ? (array) $ips : array();
+        $this->ips = null !== $ips ? (array) $ips : [];
     }
 
     /**
@@ -142,7 +142,7 @@ public function matchIps($ips)
      */
     public function matchMethod($method)
     {
-        $this->methods = null !== $method ? array_map('strtoupper', (array) $method) : array();
+        $this->methods = null !== $method ? array_map('strtoupper', (array) $method) : [];
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php b/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
index 1141e8d98712..9dd8908b2772 100644
--- a/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
+++ b/src/Symfony/Component/HttpFoundation/ResponseHeaderBag.php
@@ -24,11 +24,11 @@ class ResponseHeaderBag extends HeaderBag
     const DISPOSITION_ATTACHMENT = 'attachment';
     const DISPOSITION_INLINE = 'inline';
 
-    protected $computedCacheControl = array();
-    protected $cookies = array();
-    protected $headerNames = array();
+    protected $computedCacheControl = [];
+    protected $cookies = [];
+    protected $headerNames = [];
 
-    public function __construct(array $headers = array())
+    public function __construct(array $headers = [])
     {
         parent::__construct($headers);
 
@@ -49,7 +49,7 @@ public function __construct(array $headers = array())
      */
     public function allPreserveCase()
     {
-        $headers = array();
+        $headers = [];
         foreach ($this->all() as $name => $value) {
             $headers[isset($this->headerNames[$name]) ? $this->headerNames[$name] : $name] = $value;
         }
@@ -70,9 +70,9 @@ public function allPreserveCaseWithoutCookies()
     /**
      * {@inheritdoc}
      */
-    public function replace(array $headers = array())
+    public function replace(array $headers = [])
     {
-        $this->headerNames = array();
+        $this->headerNames = [];
 
         parent::replace($headers);
 
@@ -107,7 +107,7 @@ public function set($key, $values, $replace = true)
 
         if ('set-cookie' === $uniqueKey) {
             if ($replace) {
-                $this->cookies = array();
+                $this->cookies = [];
             }
             foreach ((array) $values as $cookie) {
                 $this->setCookie(Cookie::fromString($cookie));
@@ -122,9 +122,9 @@ public function set($key, $values, $replace = true)
         parent::set($key, $values, $replace);
 
         // ensure the cache-control header has sensible defaults
-        if (\in_array($uniqueKey, array('cache-control', 'etag', 'last-modified', 'expires'), true)) {
+        if (\in_array($uniqueKey, ['cache-control', 'etag', 'last-modified', 'expires'], true)) {
             $computed = $this->computeCacheControlValue();
-            $this->headers['cache-control'] = array($computed);
+            $this->headers['cache-control'] = [$computed];
             $this->headerNames['cache-control'] = 'Cache-Control';
             $this->computedCacheControl = $this->parseCacheControl($computed);
         }
@@ -139,7 +139,7 @@ public function remove($key)
         unset($this->headerNames[$uniqueKey]);
 
         if ('set-cookie' === $uniqueKey) {
-            $this->cookies = array();
+            $this->cookies = [];
 
             return;
         }
@@ -147,7 +147,7 @@ public function remove($key)
         parent::remove($key);
 
         if ('cache-control' === $uniqueKey) {
-            $this->computedCacheControl = array();
+            $this->computedCacheControl = [];
         }
 
         if ('date' === $uniqueKey) {
@@ -216,15 +216,15 @@ public function removeCookie($name, $path = '/', $domain = null)
      */
     public function getCookies($format = self::COOKIES_FLAT)
     {
-        if (!\in_array($format, array(self::COOKIES_FLAT, self::COOKIES_ARRAY))) {
-            throw new \InvalidArgumentException(sprintf('Format "%s" invalid (%s).', $format, implode(', ', array(self::COOKIES_FLAT, self::COOKIES_ARRAY))));
+        if (!\in_array($format, [self::COOKIES_FLAT, self::COOKIES_ARRAY])) {
+            throw new \InvalidArgumentException(sprintf('Format "%s" invalid (%s).', $format, implode(', ', [self::COOKIES_FLAT, self::COOKIES_ARRAY])));
         }
 
         if (self::COOKIES_ARRAY === $format) {
             return $this->cookies;
         }
 
-        $flattenedCookies = array();
+        $flattenedCookies = [];
         foreach ($this->cookies as $path) {
             foreach ($path as $cookies) {
                 foreach ($cookies as $cookie) {
diff --git a/src/Symfony/Component/HttpFoundation/Session/SessionUtils.php b/src/Symfony/Component/HttpFoundation/Session/SessionUtils.php
index 91737c39acb8..b5bce4a884ef 100644
--- a/src/Symfony/Component/HttpFoundation/Session/SessionUtils.php
+++ b/src/Symfony/Component/HttpFoundation/Session/SessionUtils.php
@@ -30,7 +30,7 @@ public static function popSessionCookie(string $sessionName, string $sessionId):
         $sessionCookie = null;
         $sessionCookiePrefix = sprintf(' %s=', urlencode($sessionName));
         $sessionCookieWithId = sprintf('%s%s;', $sessionCookiePrefix, urlencode($sessionId));
-        $otherCookies = array();
+        $otherCookies = [];
         foreach (headers_list() as $h) {
             if (0 !== stripos($h, 'Set-Cookie:')) {
                 continue;
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
index 95f110332ad2..defca606efb2 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
@@ -104,7 +104,7 @@ public function write($sessionId, $data)
     {
         if (null === $this->igbinaryEmptyData) {
             // see https://github.com/igbinary/igbinary/issues/146
-            $this->igbinaryEmptyData = \function_exists('igbinary_serialize') ? igbinary_serialize(array()) : '';
+            $this->igbinaryEmptyData = \function_exists('igbinary_serialize') ? igbinary_serialize([]) : '';
         }
         if ('' === $data || $this->igbinaryEmptyData === $data) {
             return $this->destroy($sessionId);
diff --git a/src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php b/src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php
index c0425fcfdcd7..2f82dc4e6775 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/HeaderUtilsTest.php
@@ -101,14 +101,14 @@ public function testMakeDisposition($disposition, $filename, $filenameFallback,
 
     public function provideMakeDisposition()
     {
-        return array(
-            array('attachment', 'foo.html', 'foo.html', 'attachment; filename=foo.html'),
-            array('attachment', 'foo.html', '', 'attachment; filename=foo.html'),
-            array('attachment', 'foo bar.html', '', 'attachment; filename="foo bar.html"'),
-            array('attachment', 'foo "bar".html', '', 'attachment; filename="foo \\"bar\\".html"'),
-            array('attachment', 'foo%20bar.html', 'foo bar.html', 'attachment; filename="foo bar.html"; filename*=utf-8\'\'foo%2520bar.html'),
-            array('attachment', 'föö.html', 'foo.html', 'attachment; filename=foo.html; filename*=utf-8\'\'f%C3%B6%C3%B6.html'),
-        );
+        return [
+            ['attachment', 'foo.html', 'foo.html', 'attachment; filename=foo.html'],
+            ['attachment', 'foo.html', '', 'attachment; filename=foo.html'],
+            ['attachment', 'foo bar.html', '', 'attachment; filename="foo bar.html"'],
+            ['attachment', 'foo "bar".html', '', 'attachment; filename="foo \\"bar\\".html"'],
+            ['attachment', 'foo%20bar.html', 'foo bar.html', 'attachment; filename="foo bar.html"; filename*=utf-8\'\'foo%2520bar.html'],
+            ['attachment', 'föö.html', 'foo.html', 'attachment; filename=foo.html; filename*=utf-8\'\'f%C3%B6%C3%B6.html'],
+        ];
     }
 
     /**
@@ -122,13 +122,13 @@ public function testMakeDispositionFail($disposition, $filename)
 
     public function provideMakeDispositionFail()
     {
-        return array(
-            array('attachment', 'foo%20bar.html'),
-            array('attachment', 'foo/bar.html'),
-            array('attachment', '/foo.html'),
-            array('attachment', 'foo\bar.html'),
-            array('attachment', '\foo.html'),
-            array('attachment', 'föö.html'),
-        );
+        return [
+            ['attachment', 'foo%20bar.html'],
+            ['attachment', 'foo/bar.html'],
+            ['attachment', '/foo.html'],
+            ['attachment', 'foo\bar.html'],
+            ['attachment', '\foo.html'],
+            ['attachment', 'föö.html'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestMatcherTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestMatcherTest.php
index 6bf034dcee59..57e9c3d30f2c 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestMatcherTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestMatcherTest.php
@@ -81,7 +81,7 @@ public function testHost($pattern, $isMatch)
     public function testPort()
     {
         $matcher = new RequestMatcher();
-        $request = Request::create('', 'get', array(), array(), array(), array('HTTP_HOST' => null, 'SERVER_PORT' => 8000));
+        $request = Request::create('', 'get', [], [], [], ['HTTP_HOST' => null, 'SERVER_PORT' => 8000]);
 
         $matcher->matchPort(8000);
         $this->assertTrue($matcher->matches($request));
@@ -89,7 +89,7 @@ public function testPort()
         $matcher->matchPort(9000);
         $this->assertFalse($matcher->matches($request));
 
-        $matcher = new RequestMatcher(null, null, null, null, array(), null, 8000);
+        $matcher = new RequestMatcher(null, null, null, null, [], null, 8000);
         $this->assertTrue($matcher->matches($request));
     }
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
index f6ddb98ea761..35df36c1c6bb 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php
@@ -22,7 +22,7 @@ class ResponseHeaderBagTest extends TestCase
 {
     public function testAllPreserveCase()
     {
-        $headers = array(
+        $headers = [
             'fOo' => 'BAR',
             'ETag' => 'xyzzy',
             'Content-MD5' => 'Q2hlY2sgSW50ZWdyaXR5IQ==',
@@ -30,7 +30,7 @@ public function testAllPreserveCase()
             'WWW-Authenticate' => 'Basic realm="WallyWorld"',
             'X-UA-Compatible' => 'IE=edge,chrome=1',
             'X-XSS-Protection' => '1; mode=block',
-        );
+        ];
 
         $bag = new ResponseHeaderBag($headers);
         $allPreservedCase = $bag->allPreserveCase();
@@ -42,45 +42,45 @@ public function testAllPreserveCase()
 
     public function testCacheControlHeader()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
-        $bag = new ResponseHeaderBag(array('Cache-Control' => 'public'));
+        $bag = new ResponseHeaderBag(['Cache-Control' => 'public']);
         $this->assertEquals('public', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('public'));
 
-        $bag = new ResponseHeaderBag(array('ETag' => 'abcde'));
+        $bag = new ResponseHeaderBag(['ETag' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('private'));
         $this->assertTrue($bag->hasCacheControlDirective('must-revalidate'));
         $this->assertFalse($bag->hasCacheControlDirective('max-age'));
 
-        $bag = new ResponseHeaderBag(array('Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT'));
+        $bag = new ResponseHeaderBag(['Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array(
+        $bag = new ResponseHeaderBag([
             'Expires' => 'Wed, 16 Feb 2011 14:17:43 GMT',
             'Cache-Control' => 'max-age=3600',
-        ));
+        ]);
         $this->assertEquals('max-age=3600, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('Last-Modified' => 'abcde'));
+        $bag = new ResponseHeaderBag(['Last-Modified' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('Etag' => 'abcde', 'Last-Modified' => 'abcde'));
+        $bag = new ResponseHeaderBag(['Etag' => 'abcde', 'Last-Modified' => 'abcde']);
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'max-age=100']);
         $this->assertEquals('max-age=100, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 's-maxage=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 's-maxage=100']);
         $this->assertEquals('s-maxage=100', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'private, max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'private, max-age=100']);
         $this->assertEquals('max-age=100, private', $bag->get('Cache-Control'));
 
-        $bag = new ResponseHeaderBag(array('cache-control' => 'public, max-age=100'));
+        $bag = new ResponseHeaderBag(['cache-control' => 'public, max-age=100']);
         $this->assertEquals('max-age=100, public', $bag->get('Cache-Control'));
 
         $bag = new ResponseHeaderBag();
@@ -88,7 +88,7 @@ public function testCacheControlHeader()
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
 
         $bag = new ResponseHeaderBag();
-        $bag->set('Cache-Control', array('public', 'must-revalidate'));
+        $bag->set('Cache-Control', ['public', 'must-revalidate']);
         $this->assertCount(1, $bag->get('Cache-Control', null, false));
         $this->assertEquals('must-revalidate, public', $bag->get('Cache-Control'));
 
@@ -101,7 +101,7 @@ public function testCacheControlHeader()
 
     public function testCacheControlClone()
     {
-        $headers = array('foo' => 'bar');
+        $headers = ['foo' => 'bar'];
         $bag1 = new ResponseHeaderBag($headers);
         $bag2 = new ResponseHeaderBag($bag1->allPreserveCase());
         $this->assertEquals($bag1->allPreserveCase(), $bag2->allPreserveCase());
@@ -109,7 +109,7 @@ public function testCacheControlClone()
 
     public function testToStringIncludesCookieHeaders()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $bag->setCookie(Cookie::create('foo', 'bar'));
 
         $this->assertSetCookieHeader('foo=bar; path=/; httponly; samesite=lax', $bag);
@@ -121,7 +121,7 @@ public function testToStringIncludesCookieHeaders()
 
     public function testClearCookieSecureNotHttpOnly()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
 
         $bag->clearCookie('foo', '/', null, true, false);
 
@@ -130,23 +130,23 @@ public function testClearCookieSecureNotHttpOnly()
 
     public function testReplace()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
-        $bag->replace(array('Cache-Control' => 'public'));
+        $bag->replace(['Cache-Control' => 'public']);
         $this->assertEquals('public', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('public'));
     }
 
     public function testReplaceWithRemove()
     {
-        $bag = new ResponseHeaderBag(array());
+        $bag = new ResponseHeaderBag([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
 
         $bag->remove('Cache-Control');
-        $bag->replace(array());
+        $bag->replace([]);
         $this->assertEquals('no-cache, private', $bag->get('Cache-Control'));
         $this->assertTrue($bag->hasCacheControlDirective('no-cache'));
     }
@@ -161,12 +161,12 @@ public function testCookiesWithSameNames()
 
         $this->assertCount(4, $bag->getCookies());
         $this->assertEquals('foo=bar; path=/path/foo; domain=foo.bar; httponly; samesite=lax', $bag->get('set-cookie'));
-        $this->assertEquals(array(
+        $this->assertEquals([
             'foo=bar; path=/path/foo; domain=foo.bar; httponly; samesite=lax',
             'foo=bar; path=/path/bar; domain=foo.bar; httponly; samesite=lax',
             'foo=bar; path=/path/bar; domain=bar.foo; httponly; samesite=lax',
             'foo=bar; path=/; httponly; samesite=lax',
-        ), $bag->get('set-cookie', null, false));
+        ], $bag->get('set-cookie', null, false));
 
         $this->assertSetCookieHeader('foo=bar; path=/path/foo; domain=foo.bar; httponly; samesite=lax', $bag);
         $this->assertSetCookieHeader('foo=bar; path=/path/bar; domain=foo.bar; httponly; samesite=lax', $bag);
@@ -228,16 +228,16 @@ public function testSetCookieHeader()
     {
         $bag = new ResponseHeaderBag();
         $bag->set('set-cookie', 'foo=bar');
-        $this->assertEquals(array(Cookie::create('foo', 'bar', 0, '/', null, false, false, true, null)), $bag->getCookies());
+        $this->assertEquals([Cookie::create('foo', 'bar', 0, '/', null, false, false, true, null)], $bag->getCookies());
 
         $bag->set('set-cookie', 'foo2=bar2', false);
-        $this->assertEquals(array(
+        $this->assertEquals([
             Cookie::create('foo', 'bar', 0, '/', null, false, false, true, null),
             Cookie::create('foo2', 'bar2', 0, '/', null, false, false, true, null),
-        ), $bag->getCookies());
+        ], $bag->getCookies());
 
         $bag->remove('set-cookie');
-        $this->assertEquals(array(), $bag->getCookies());
+        $this->assertEquals([], $bag->getCookies());
     }
 
     /**
@@ -260,8 +260,8 @@ public function testToStringDoesntMessUpHeaders()
         (string) $headers;
 
         $allHeaders = $headers->allPreserveCase();
-        $this->assertEquals(array('http://www.symfony.com'), $allHeaders['Location']);
-        $this->assertEquals(array('text/html'), $allHeaders['Content-type']);
+        $this->assertEquals(['http://www.symfony.com'], $allHeaders['Location']);
+        $this->assertEquals(['text/html'], $allHeaders['Content-type']);
     }
 
     public function testDateHeaderAddedOnCreation()
@@ -277,7 +277,7 @@ public function testDateHeaderAddedOnCreation()
     public function testDateHeaderCanBeSetOnCreation()
     {
         $someDate = 'Thu, 23 Mar 2017 09:15:12 GMT';
-        $bag = new ResponseHeaderBag(array('Date' => $someDate));
+        $bag = new ResponseHeaderBag(['Date' => $someDate]);
 
         $this->assertEquals($someDate, $bag->get('Date'));
     }
@@ -285,7 +285,7 @@ public function testDateHeaderCanBeSetOnCreation()
     public function testDateHeaderWillBeRecreatedWhenRemoved()
     {
         $someDate = 'Thu, 23 Mar 2017 09:15:12 GMT';
-        $bag = new ResponseHeaderBag(array('Date' => $someDate));
+        $bag = new ResponseHeaderBag(['Date' => $someDate]);
         $bag->remove('Date');
 
         // a (new) Date header is still present
@@ -296,7 +296,7 @@ public function testDateHeaderWillBeRecreatedWhenRemoved()
     public function testDateHeaderWillBeRecreatedWhenHeadersAreReplaced()
     {
         $bag = new ResponseHeaderBag();
-        $bag->replace(array());
+        $bag->replace([]);
 
         $this->assertTrue($bag->has('Date'));
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/AttributeBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/AttributeBagTest.php
index 8c41e4751034..44c8174e3034 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/AttributeBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Attribute/AttributeBagTest.php
@@ -21,7 +21,7 @@
  */
 class AttributeBagTest extends TestCase
 {
-    private $array = array();
+    private $array = [];
 
     /**
      * @var AttributeBag
@@ -30,21 +30,21 @@ class AttributeBagTest extends TestCase
 
     protected function setUp()
     {
-        $this->array = array(
+        $this->array = [
             'hello' => 'world',
             'always' => 'be happy',
             'user.login' => 'drak',
-            'csrf.token' => array(
+            'csrf.token' => [
                 'a' => '1234',
                 'b' => '4321',
-            ),
-            'category' => array(
-                'fishing' => array(
+            ],
+            'category' => [
+                'fishing' => [
                     'first' => 'cod',
                     'second' => 'sole',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $this->bag = new AttributeBag('_sf');
         $this->bag->initialize($this->array);
     }
@@ -52,7 +52,7 @@ protected function setUp()
     protected function tearDown()
     {
         $this->bag = null;
-        $this->array = array();
+        $this->array = [];
     }
 
     public function testInitialize()
@@ -60,7 +60,7 @@ public function testInitialize()
         $bag = new AttributeBag();
         $bag->initialize($this->array);
         $this->assertEquals($this->array, $bag->all());
-        $array = array('should' => 'change');
+        $array = ['should' => 'change'];
         $bag->initialize($array);
         $this->assertEquals($array, $bag->all());
     }
@@ -122,7 +122,7 @@ public function testAll()
 
     public function testReplace()
     {
-        $array = array();
+        $array = [];
         $array['name'] = 'jack';
         $array['foo.bar'] = 'beep';
         $this->bag->replace($array);
@@ -150,22 +150,22 @@ public function testRemove()
     public function testClear()
     {
         $this->bag->clear();
-        $this->assertEquals(array(), $this->bag->all());
+        $this->assertEquals([], $this->bag->all());
     }
 
     public function attributesProvider()
     {
-        return array(
-            array('hello', 'world', true),
-            array('always', 'be happy', true),
-            array('user.login', 'drak', true),
-            array('csrf.token', array('a' => '1234', 'b' => '4321'), true),
-            array('category', array('fishing' => array('first' => 'cod', 'second' => 'sole')), true),
-            array('user2.login', null, false),
-            array('never', null, false),
-            array('bye', null, false),
-            array('bye/for/now', null, false),
-        );
+        return [
+            ['hello', 'world', true],
+            ['always', 'be happy', true],
+            ['user.login', 'drak', true],
+            ['csrf.token', ['a' => '1234', 'b' => '4321'], true],
+            ['category', ['fishing' => ['first' => 'cod', 'second' => 'sole']], true],
+            ['user2.login', null, false],
+            ['never', null, false],
+            ['bye', null, false],
+            ['bye/for/now', null, false],
+        ];
     }
 
     public function testGetIterator()
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/Fixtures/with_samesite.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/Fixtures/with_samesite.php
index 2d32792a8f81..fc2c4182895a 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/Fixtures/with_samesite.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/Fixtures/with_samesite.php
@@ -4,10 +4,10 @@
 
 use Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage;
 
-$storage = new NativeSessionStorage(array('cookie_samesite' => 'lax'));
+$storage = new NativeSessionStorage(['cookie_samesite' => 'lax']);
 $storage->setSaveHandler(new TestSessionHandler());
 $storage->start();
 
-$_SESSION = array('foo' => 'bar');
+$_SESSION = ['foo' => 'bar'];
 
 ob_start(function ($buffer) { return str_replace(session_id(), 'random_session_id', $buffer); });
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/Fixtures/with_samesite_and_migration.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/Fixtures/with_samesite_and_migration.php
index e0ff64b951ab..a28b6fedfc37 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/Fixtures/with_samesite_and_migration.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/Fixtures/with_samesite_and_migration.php
@@ -4,11 +4,11 @@
 
 use Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage;
 
-$storage = new NativeSessionStorage(array('cookie_samesite' => 'lax'));
+$storage = new NativeSessionStorage(['cookie_samesite' => 'lax']);
 $storage->setSaveHandler(new TestSessionHandler());
 $storage->start();
 
-$_SESSION = array('foo' => 'bar');
+$_SESSION = ['foo' => 'bar'];
 
 $storage->regenerate(true);
 
diff --git a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
index 171b38596fd7..dd527708bee0 100644
--- a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
+++ b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
@@ -26,7 +26,7 @@ class CacheWarmerAggregate implements CacheWarmerInterface
     private $optionalsEnabled = false;
     private $onlyOptionalsEnabled = false;
 
-    public function __construct(iterable $warmers 
10000
= array(), bool $debug = false, string $deprecationLogsFilepath = null)
+    public function __construct(iterable $warmers = [], bool $debug = false, string $deprecationLogsFilepath = null)
     {
         $this->warmers = $warmers;
         $this->debug = $debug;
@@ -51,7 +51,7 @@ public function enableOnlyOptionalWarmers()
     public function warmUp($cacheDir)
     {
         if ($this->debug) {
-            $collectedLogs = array();
+            $collectedLogs = [];
             $previousHandler = \defined('PHPUNIT_COMPOSER_INSTALL');
             $previousHandler = $previousHandler ?: set_error_handler(function ($type, $message, $file, $line) use (&$collectedLogs, &$previousHandler) {
                 if (E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) {
@@ -73,14 +73,14 @@ public function warmUp($cacheDir)
                     }
                 }
 
-                $collectedLogs[$message] = array(
+                $collectedLogs[$message] = [
                     'type' => $type,
                     'message' => $message,
                     'file' => $file,
                     'line' => $line,
                     'trace' => $backtrace,
                     'count' => 1,
-                );
+                ];
             });
         }
 
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
index 13694f5a5937..1a3021dcb451 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
@@ -52,12 +52,12 @@ public function __construct(Stopwatch $stopwatch = null, $fileLinkFormat = null,
         $this->dumper = $dumper;
 
         // All clones share these properties by reference:
-        $this->rootRefs = array(
+        $this->rootRefs = [
             &$this->data,
             &$this->dataCount,
             &$this->isCollected,
             &$this->clonesCount,
-        );
+        ];
 
         $this->sourceContextProvider = $dumper instanceof Connection && isset($dumper->getContextProviders()['source']) ? $dumper->getContextProviders()['source'] : new SourceContextProvider($this->charset);
     }
@@ -110,7 +110,7 @@ public function collect(Request $request, Response $response, \Exception $except
         ) {
             if ($response->headers->has('Content-Type') && false !== strpos($response->headers->get('Content-Type'), 'html')) {
                 $dumper = new HtmlDumper('php://output', $this->charset);
-                $dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+                $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
             } else {
                 $dumper = new CliDumper('php://output', $this->charset);
             }
@@ -126,7 +126,7 @@ public function reset()
         if ($this->stopwatch) {
             $this->stopwatch->reset();
         }
-        $this->data = array();
+        $this->data = [];
         $this->dataCount = 0;
         $this->isCollected = true;
         $this->clonesCount = 0;
@@ -142,7 +142,7 @@ public function serialize()
         $this->data[] = $this->fileLinkFormat;
         $this->data[] = $this->charset;
         $ser = serialize($this->data);
-        $this->data = array();
+        $this->data = [];
         $this->dataCount = 0;
         $this->isCollected = true;
 
@@ -169,11 +169,11 @@ public function getDumps($format, $maxDepthLimit = -1, $maxItemsPerDepth = -1)
 
         if ('html' === $format) {
             $dumper = new HtmlDumper($data, $this->charset);
-            $dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+            $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
         } else {
             throw new \InvalidArgumentException(sprintf('Invalid dump format: %s', $format));
         }
-        $dumps = array();
+        $dumps = [];
 
         foreach ($this->data as $dump) {
             $dumper->dump($dump['data']->withMaxDepth($maxDepthLimit)->withMaxItemsPerDepth($maxItemsPerDepth));
@@ -207,12 +207,12 @@ public function __destruct()
             if (isset($_SERVER['VAR_DUMPER_FORMAT'])) {
                 $html = 'html' === $_SERVER['VAR_DUMPER_FORMAT'];
             } else {
-                $html = !\in_array(\PHP_SAPI, array('cli', 'phpdbg'), true) && stripos($h[$i], 'html');
+                $html = !\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) && stripos($h[$i], 'html');
             }
 
             if ($html) {
                 $dumper = new HtmlDumper('php://output', $this->charset);
-                $dumper->setDisplayOptions(array('fileLinkFormat' => $this->fileLinkFormat));
+                $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
             } else {
                 $dumper = new CliDumper('php://output', $this->charset);
             }
@@ -222,7 +222,7 @@ public function __destruct()
                 $this->doDump($dumper, $dump['data'], $dump['name'], $dump['file'], $dump['line']);
             }
 
-            $this->data = array();
+            $this->data = [];
             $this->dataCount = 0;
         }
     }
@@ -236,7 +236,7 @@ private function doDump(DataDumperInterface $dumper, $data, $name, $file, $line)
                         $s = $this->style('meta', '%s');
                         $f = strip_tags($this->style('', $file));
                         $name = strip_tags($this->style('', $name));
-                        if ($fmt && $link = \is_string($fmt) ? strtr($fmt, array('%f' => $file, '%l' => $line)) : $fmt->format($file, $line)) {
+                        if ($fmt && $link = \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line)) {
                             $name = sprintf('<a href="%s" title="%s">'.$s.'</a>', strip_tags($this->style('', $link)), $f, $name);
                         } else {
                             $name = sprintf('<abbr title="%s">'.$s.'</abbr>', $f, $name);
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
index ed753826189f..2df5f94fd45a 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php
@@ -38,7 +38,7 @@ public function __construct()
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
         // attributes are serialized and as they can be anything, they need to be converted to strings.
-        $attributes = array();
+        $attributes = [];
         $route = '';
         foreach ($request->attributes->all() as $key => $value) {
             if ('_route' === $key) {
@@ -57,10 +57,10 @@ public function collect(Request $request, Response $response, \Exception $except
             $content = false;
         }
 
-        $sessionMetadata = array();
-        $sessionAttributes = array();
+        $sessionMetadata = [];
+        $sessionAttributes = [];
         $session = null;
-        $flashes = array();
+        $flashes = [];
         if ($request->hasSession()) {
             $session = $request->getSession();
             if ($session->isStarted()) {
@@ -74,19 +74,19 @@ public function collect(Request $request, Response $response, \Exception $except
 
         $statusCode = $response->getStatusCode();
 
-        $responseCookies = array();
+        $responseCookies = [];
         foreach ($response->headers->getCookies() as $cookie) {
             $responseCookies[$cookie->getName()] = $cookie;
         }
 
-        $dotenvVars = array();
+        $dotenvVars = [];
         foreach (explode(',', getenv('SYMFONY_DOTENV_VARS')) as $name) {
             if ('' !== $name && false !== $value = getenv($name)) {
                 $dotenvVars[$name] = $value;
             }
         }
 
-        $this->data = array(
+        $this->data = [
             'method' => $request->getMethod(),
             'format' => $request->getRequestFormat(),
             'content' => $content,
@@ -110,7 +110,7 @@ public function collect(Request $request, Response $response, \Exception $except
             'controller' => 'n/a',
             'locale' => $request->getLocale(),
             'dotenv_vars' => $dotenvVars,
-        );
+        ];
 
         if (isset($this->data['request_headers']['php-auth-pw'])) {
             $this->data['request_headers']['php-auth-pw'] = '******';
@@ -147,14 +147,14 @@ public function collect(Request $request, Response $response, \Exception $except
         if ($response->isRedirect()) {
             $response->headers->setCookie(new Cookie(
                 'sf_redirect',
-                json_encode(array(
+                json_encode([
                     'token' => $response->headers->get('x-debug-token'),
                     'route' => $request->attributes->get('_route', 'n/a'),
                     'method' => $request->getMethod(),
                     'controller' => $this->parseController($request->attributes->get('_controller')),
                     'status_code' => $statusCode,
                     'status_text' => Response::$statusTexts[(int) $statusCode],
-                )),
+                ]),
                 0, '/', null, $request->isSecure(), true, false, 'lax'
             ));
         }
@@ -173,7 +173,7 @@ public function lateCollect()
 
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
         $this->controllers = new \SplObjectStorage();
     }
 
@@ -308,7 +308,7 @@ public function getIdentifier()
      */
     public function getRouteParams()
     {
-        return isset($this->data['request_attributes']['_route_params']) ? $this->data['request_attributes']['_route_params']->getValue() : array();
+        return isset($this->data['request_attributes']['_route_params']) ? $this->data['request_attributes']['_route_params']->getValue() : [];
     }
 
     /**
@@ -356,10 +356,10 @@ public function onKernelResponse(FilterResponseEvent $event)
 
     public static function getSubscribedEvents()
     {
-        return array(
+        return [
             KernelEvents::CONTROLLER => 'onKernelController',
             KernelEvents::RESPONSE => 'onKernelResponse',
-        );
+        ];
     }
 
     /**
@@ -387,21 +387,21 @@ protected function parseController($controller)
             try {
                 $r = new \ReflectionMethod($controller[0], $controller[1]);
 
-                return array(
+                return [
                     'class' => \is_object($controller[0]) ? \get_class($controller[0]) : $controller[0],
                     'method' => $controller[1],
                     'file' => $r->getFileName(),
                     'line' => $r->getStartLine(),
-                );
+                ];
             } catch (\ReflectionException $e) {
                 if (\is_callable($controller)) {
                     // using __call or  __callStatic
-                    return array(
+                    return [
                         'class' => \is_object($controller[0]) ? \get_class($controller[0]) : $controller[0],
                         'method' => $controller[1],
                         'file' => 'n/a',
                         'line' => 'n/a',
-                    );
+                    ];
                 }
             }
         }
@@ -409,12 +409,12 @@ protected function parseController($controller)
         if ($controller instanceof \Closure) {
             $r = new \ReflectionFunction($controller);
 
-            $controller = array(
+            $controller = [
                 'class' => $r->getName(),
                 'method' => null,
                 'file' => $r->getFileName(),
                 'line' => $r->getStartLine(),
-            );
+            ];
 
             if (false !== strpos($r->name, '{closure}')) {
                 return $controller;
@@ -433,12 +433,12 @@ protected function parseController($controller)
         if (\is_object($controller)) {
             $r = new \ReflectionClass($controller);
 
-            return array(
+            return [
                 'class' => $r->getName(),
                 'method' => null,
                 'file' => $r->getFileName(),
                 'line' => $r->getStartLine(),
-            );
+            ];
         }
 
         return \is_string($controller) ? $controller : 'n/a';
diff --git a/src/Symfony/Component/HttpKernel/EventListener/AbstractTestSessionListener.php b/src/Symfony/Component/HttpKernel/EventListener/AbstractTestSessionListener.php
index ff93ce6e9fec..58b3580024c5 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/AbstractTestSessionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/AbstractTestSessionListener.php
@@ -32,7 +32,7 @@ abstract class AbstractTestSessionListener implements EventSubscriberInterface
     private $sessionId;
     private $sessionOptions;
 
-    public function __construct(array $sessionOptions = array())
+    public function __construct(array $sessionOptions = [])
     {
         $this->sessionOptions = $sessionOptions;
     }
@@ -78,7 +78,7 @@ public function onKernelResponse(FilterResponseEvent $event)
         }
 
         if ($session instanceof Session ? !$session->isEmpty() || (null !== $this->sessionId && $session->getId() !== $this->sessionId) : $wasStarted) {
-            $params = session_get_cookie_params() + array('samesite' => null);
+            $params = session_get_cookie_params() + ['samesite' => null];
             foreach ($this->sessionOptions as $k => $v) {
                 if (0 === strpos($k, 'cookie_')) {
                     $params[substr($k, 7)] = $v;
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php b/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
index 02b1d4ddc362..dd00797f5f08 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
@@ -112,12 +112,12 @@ public function reset()
 
     public static function getSubscribedEvents()
     {
-        return array(
-            KernelEvents::EXCEPTION => array(
-                array('logKernelException', 0),
-                array('onKernelException', -128),
-            ),
-        );
+        return [
+            KernelEvents::EXCEPTION => [
+                ['logKernelException', 0],
+                ['onKernelException', -128],
+            ],
+        ];
     }
 
     /**
@@ -130,9 +130,9 @@ protected function logException(\Exception $exception, $message)
     {
         if (null !== $this->logger) {
             if (!$exception instanceof HttpExceptionInterface || $exception->getStatusCode() >= 500) {
-                $this->logger->critical($message, array('exception' => $exception));
+                $this->logger->critical($message, ['exception' => $exception]);
             } else {
-                $this->logger->error($message, array('exception' => $exception));
+                $this->logger->error($message, ['exception' => $exception]);
             }
         }
     }
@@ -147,7 +147,7 @@ protected function logException(\Exception $exception, $message)
      */
     protected function duplicateRequest(\Exception $exception, Request $request)
     {
-        $attributes = array(
+        $attributes = [
             'exception' => $exception = FlattenException::create($exception),
             '_controller' => $this->controller ?: function () use ($exception) {
                 $handler = new ExceptionHandler($this->debug, $this->charset, $this->fileLinkFormat);
@@ -155,7 +155,7 @@ protected function duplicateRequest(\Exception $exception, Request $request)
                 return new Response($handler->getHtml($exception), $exception->getStatusCode(), $exception->getHeaders());
             },
             'logger' => $this->logger instanceof DebugLoggerInterface ? $this->logger : null,
-        );
+        ];
         $request = $request->duplicate(null, null, $attributes);
         $request->setMethod('GET');
 
diff --git a/src/Symfony/Component/HttpKernel/EventListener/SessionListener.php b/src/Symfony/Component/HttpKernel/EventListener/SessionListener.php
index 75624b6c5c53..aaf3be507fac 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/SessionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/SessionListener.php
@@ -42,7 +42,7 @@ protected function getSession()
             && ($storage = $this->container->get('session_storage')) instanceof NativeSessionStorage
             && $this->container->get('request_stack')->getMasterRequest()->isSecure()
         ) {
-            $storage->setOptions(array('cookie_secure' => true));
+            $storage->setOptions(['cookie_secure' => true]);
         }
 
         return $this->container->get('session');
diff --git a/src/Symfony/Component/HttpKernel/EventListener/TestSessionListener.php b/src/Symfony/Component/HttpKernel/EventListener/TestSessionListener.php
index 23589a2bb35f..46323ae2a833 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/TestSessionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/TestSessionListener.php
@@ -24,7 +24,7 @@ class TestSessionListener extends AbstractTestSessionListener
 {
     private $container;
 
-    public function __construct(ContainerInterface $container, array $sessionOptions = array())
+    public function __construct(ContainerInterface $container, array $sessionOptions = [])
     {
         $this->container = $container;
         parent::__construct($sessionOptions);
diff --git a/src/Symfony/Component/HttpKernel/Exception/ControllerDoesNotReturnResponseException.php b/src/Symfony/Component/HttpKernel/Exception/ControllerDoesNotReturnResponseException.php
index 39149aa5b724..517313db6046 100644
--- a/src/Symfony/Component/HttpKernel/Exception/ControllerDoesNotReturnResponseException.php
+++ b/src/Symfony/Component/HttpKernel/Exception/ControllerDoesNotReturnResponseException.php
@@ -28,12 +28,12 @@ public function __construct(string $message, callable $controller, string $file,
         $this->line = $controllerDefinition['line'];
         $r = new \ReflectionProperty(\Exception::class, 'trace');
         $r->setAccessible(true);
-        $r->setValue($this, array_merge(array(
-            array(
+        $r->setValue($this, array_merge([
+            [
                 'line' => $line,
                 'file' => $file,
-            ),
-        ), $this->getTrace()));
+            ],
+        ], $this->getTrace()));
     }
 
     private function parseControllerDefinition(callable $controller): ?array
@@ -46,10 +46,10 @@ private function parseControllerDefinition(callable $controller): ?array
             try {
                 $r = new \ReflectionMethod($controller[0], $controller[1]);
 
-                return array(
+                return [
                     'file' => $r->getFileName(),
                     'line' => $r->getEndLine(),
-                );
+                ];
             } catch (\ReflectionException $e) {
                 return null;
             }
@@ -58,19 +58,19 @@ private function parseControllerDefinition(callable $controller): ?array
         if ($controller instanceof \Closure) {
             $r = new \ReflectionFunction($controller);
 
-            return array(
+            return [
                 'file' => $r->getFileName(),
                 'line' => $r->getEndLine(),
-            );
+            ];
         }
 
         if (\is_object($controller)) {
             $r = new \ReflectionClass($controller);
 
-            return array(
+            return [
                 'file' => $r->getFileName(),
                 'line' => $r->getEndLine(),
-            );
+            ];
         }
 
         return null;
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index fd1d0c0e89cd..f2528aab26dd 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -52,7 +52,7 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     /**
      * @var BundleInterface[]
      */
-    protected $bundles = array();
+    protected $bundles = [];
 
     protected $container;
     /**
@@ -258,7 +258,7 @@ public function locateResource($name, $dir = null, $first = true)
         $isResource = 0 === strpos($path, 'Resources') && null !== $dir;
         $overridePath = substr($path, 9);
         $bundle = $this->getBundle($bundleName);
-        $files = array();
+        $files = [];
 
         if ($isResource && file_exists($file = $dir.'/'.$bundle->getName().$overridePath)) {
             $files[] = $file;
@@ -409,7 +409,7 @@ public function getCharset()
      */
     public function getAnnotatedClassesToCompile(): array
     {
-        return array();
+        return [];
     }
 
     /**
@@ -420,7 +420,7 @@ public function getAnnotatedClassesToCompile(): array
     protected function initializeBundles()
     {
         // init bundles
-        $this->bundles = array();
+        $this->bundles = [];
         foreach ($this->registerBundles() as $bundle) {
             $name = $bundle->getName();
             if (isset($this->bundles[$name])) {
@@ -498,7 +498,7 @@ protected function initializeContainer()
         }
 
         if ($this->debug) {
-            $collectedLogs = array();
+            $collectedLogs = [];
             $previousHandler = \defined('PHPUNIT_COMPOSER_INSTALL');
             $previousHandler = $previousHandler ?: set_error_handler(function ($type, $message, $file, $line) use (&$collectedLogs, &$previousHandler) {
                 if (E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) {
@@ -522,19 +522,19 @@ protected function initializeContainer()
                 // Remove frames added by DebugClassLoader.
                 for ($i = \count($backtrace) - 2; 0 < $i; --$i) {
                     if (DebugClassLoader::class === ($backtrace[$i]['class'] ?? null)) {
-                        $backtrace = array($backtrace[$i + 1]);
+                        $backtrace = [$backtrace[$i + 1]];
                         break;
                     }
                 }
 
-                $collectedLogs[$message] = array(
+                $collectedLogs[$message] = [
                     'type' => $type,
                     'message' => $message,
                     'file' => $file,
                     'line' => $line,
-                    'trace' => array($backtrace[0]),
+                    'trace' => [$backtrace[0]],
                     'count' => 1,
-                );
+                ];
             });
         }
 
@@ -571,7 +571,7 @@ protected function initializeContainer()
             // Because concurrent requests might still be using them,
             // old container files are not removed immediately,
             // but on a next dump of the container.
-            static $legacyContainers = array();
+            static $legacyContainers = [];
             $oldContainerDir = \dirname($oldContainer->getFileName());
             $legacyContainers[$oldContainerDir.'.legacy'] = true;
             foreach (glob(\dirname($oldContainerDir).\DIRECTORY_SEPARATOR.'*.legacy') as $legacyContainer) {
@@ -595,18 +595,18 @@ protected function initializeContainer()
      */
     protected function getKernelParameters()
     {
-        $bundles = array();
-        $bundlesMetadata = array();
+        $bundles = [];
+        $bundlesMetadata = [];
 
         foreach ($this->bundles as $name => $bundle) {
             $bundles[$name] = \get_class($bundle);
-            $bundlesMetadata[$name] = array(
+            $bundlesMetadata[$name] = [
                 'path' => $bundle->getPath(),
                 'namespace' => $bundle->getNamespace(),
-            );
+            ];
         }
 
-        return array(
+        return [
             /*
              * @deprecated since Symfony 4.2, use kernel.project_dir instead
              */
@@ -624,7 +624,7 @@ protected function getKernelParameters()
             'kernel.bundles_metadata' => $bundlesMetadata,
             'kernel.charset' => $this->getCharset(),
             'kernel.container_class' => $this->getContainerClass(),
-        );
+        ];
     }
 
     /**
@@ -636,7 +636,7 @@ protected function getKernelParameters()
      */
     protected function buildContainer()
     {
-        foreach (array('cache' => $this->warmupDir ?: $this->getCacheDir(), 'logs' => $this->getLogDir()) as $name => $dir) {
+        foreach (['cache' => $this->warmupDir ?: $this->getCacheDir(), 'logs' => $this->getLogDir()] as $name => $dir) {
             if (!is_dir($dir)) {
                 if (false === @mkdir($dir, 0777, true) && !is_dir($dir)) {
                     throw new \RuntimeException(sprintf("Unable to create the %s directory (%s)\n", $name, $dir));
@@ -664,7 +664,7 @@ protected function buildContainer()
      */
     protected function prepareContainer(ContainerBuilder $container)
     {
-        $extensions = array();
+        $extensions = [];
         foreach ($this->bundles as $bundle) {
             if ($extension = $bundle->getContainerExtension()) {
                 $container->registerExtension($extension);
@@ -726,14 +726,14 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
             $dumper->setProxyDumper(new ProxyDumper());
         }
 
-        $content = $dumper->dump(array(
+        $content = $dumper->dump([
             'class' => $class,
             'base_class' => $baseClass,
             'file' => $cache->getPath(),
             'as_files' => true,
             'debug' => $this->debug,
             'build_time' => $container->hasParameter('kernel.container_build_time') ? $container->getParameter('kernel.container_build_time') : time(),
-        ));
+        ]);
 
         $rootCode = array_pop($content);
         $dir = \dirname($cache->getPath()).'/';
@@ -759,7 +759,7 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
     protected function getContainerLoader(ContainerInterface $container)
     {
         $locator = new FileLocator($this);
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new XmlFileLoader($container, $locator),
             new YamlFileLoader($container, $locator),
             new IniFileLoader($container, $locator),
@@ -767,7 +767,7 @@ protected function getContainerLoader(ContainerInterface $container)
             new GlobFileLoader($container, $locator),
             new DirectoryLoader($container, $locator),
             new ClosureLoader($container),
-        ));
+        ]);
 
         return new DelegatingLoader($resolver);
     }
@@ -811,8 +811,8 @@ public static function stripComments($source)
                 }
 
                 // replace multiple new lines with a single newline
-                $rawChunk .= preg_replace(array('/\n{2,}/S'), "\n", $token[1]);
-            } elseif (\in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
+                $rawChunk .= preg_replace(['/\n{2,}/S'], "\n", $token[1]);
+            } elseif (\in_array($token[0], [T_COMMENT, T_DOC_COMMENT])) {
                 $ignoreSpace = true;
             } else {
                 $rawChunk .= $token[1];
@@ -835,12 +835,12 @@ public static function stripComments($source)
 
     public function serialize()
     {
-        return serialize(array($this->environment, $this->debug));
+        return serialize([$this->environment, $this->debug]);
     }
 
     public function unserialize($data)
     {
-        list($environment, $debug) = unserialize($data, array('allowed_classes' => false));
+        list($environment, $debug) = unserialize($data, ['allowed_classes' => false]);
 
         $this->__construct($environment, $debug);
     }
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
index d03ea53a3752..cf685b2ae297 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/RegisterControllerArgumentLocatorsPassTest.php
@@ -32,7 +32,7 @@ class RegisterControllerArgumentLocatorsPassTest extends TestCase
     public function testInvalidClass()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NotFound::class)
             ->addTag('controller.service_arguments')
@@ -49,10 +49,10 @@ public function testInvalidClass()
     public function testNoAction()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('argument' => 'bar'))
+            ->addTag('controller.service_arguments', ['argument' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -66,10 +66,10 @@ public function testNoAction()
     public function testNoArgument()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -83,10 +83,10 @@ public function testNoArgument()
     public function testNoService()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -100,10 +100,10 @@ public function testNoService()
     public function testInvalidMethod()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'barAction', 'argument' => 'bar', 'id' => 'bar_service'))
+            ->addTag('controller.service_arguments', ['action' => 'barAction', 'argument' => 'bar', 'id' => 'bar_service'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -117,10 +117,10 @@ public function testInvalidMethod()
     public function testInvalidArgument()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'baz', 'id' => 'bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'baz', 'id' => 'bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -130,7 +130,7 @@ public function testInvalidArgument()
     public function testAllActions()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
             ->addTag('controller.service_arguments')
@@ -141,7 +141,7 @@ public function testAllActions()
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
 
-        $this->assertEquals(array('foo::fooAction'), array_keys($locator));
+        $this->assertEquals(['foo::fooAction'], array_keys($locator));
         $this->assertInstanceof(ServiceClosureArgument::class, $locator['foo::fooAction']);
 
         $locator = $container->getDefinition((string) $locator['foo::fooAction']->getValues()[0]);
@@ -149,18 +149,18 @@ public function testAllActions()
         $this->assertSame(ServiceLocator::class, $locator->getClass());
         $this->assertFalse($locator->isPublic());
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference(ControllerDummy::class, ControllerDummy::class, ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE, 'bar')));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference(ControllerDummy::class, ControllerDummy::class, ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE, 'bar'))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testExplicitArgument()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => 'bar'))
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => 'baz')) // should be ignored, the first wins
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => 'bar'])
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => 'baz']) // should be ignored, the first wins
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -169,17 +169,17 @@ public function testExplicitArgument()
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
         $locator = $container->getDefinition((string) $locator['foo::fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE)));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testOptionalArgument()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->addTag('controller.service_arguments', array('action' => 'fooAction', 'argument' => 'bar', 'id' => '?bar'))
+            ->addTag('controller.service_arguments', ['action' => 'fooAction', 'argument' => 'bar', 'id' => '?bar'])
         ;
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -188,14 +188,14 @@ public function testOptionalArgument()
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
         $locator = $container->getDefinition((string) $locator['foo::fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE)));
+        $expected = ['bar' => new ServiceClosureArgument(new TypedReference('bar', ControllerDummy::class, ContainerInterface::IGNORE_ON_INVALID_REFERENCE))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function testSkipSetContainer()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ContainerAwareRegisterTestController::class)
             ->addTag('controller.service_arguments');
@@ -204,7 +204,7 @@ public function testSkipSetContainer()
         $pass->process($container);
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
-        $this->assertSame(array('foo::fooAction'), array_keys($locator));
+        $this->assertSame(['foo::fooAction'], array_keys($locator));
     }
 
     /**
@@ -214,7 +214,7 @@ public function testSkipSetContainer()
     public function testExceptionOnNonExistentTypeHint()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassController::class)
             ->addTag('controller.service_arguments');
@@ -230,7 +230,7 @@ public function testExceptionOnNonExistentTypeHint()
     public function testExceptionOnNonExistentTypeHintDifferentNamespace()
     {
         $container = new ContainerBuilder();
-        $container->register('argument_resolver.service')->addArgument(array());
+        $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassDifferentNamespaceController::class)
             ->addTag('controller.service_arguments');
@@ -242,7 +242,7 @@ public function testExceptionOnNonExistentTypeHintDifferentNamespace()
     public function testNoExceptionOnNonExistentTypeHintOptionalArg()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', NonExistentClassOptionalController::class)
             ->addTag('controller.service_arguments');
@@ -251,13 +251,13 @@ public function testNoExceptionOnNonExistentTypeHintOptionalArg()
         $pass->process($container);
 
         $locator = $container->getDefinition((string) $resolver->getArgument(0))->getArgument(0);
-        $this->assertSame(array('foo::barAction', 'foo::fooAction'), array_keys($locator));
+        $this->assertSame(['foo::barAction', 'foo::fooAction'], array_keys($locator));
     }
 
     public function testArgumentWithNoTypeHintIsOk()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
             ->addTag('controller.service_arguments');
@@ -272,7 +272,7 @@ public function testArgumentWithNoTypeHintIsOk()
     public function testControllersAreMadePublic()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
             ->setPublic(false)
@@ -290,10 +290,10 @@ public function testControllersAreMadePublic()
     public function testBindings($bindingName)
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', RegisterTestController::class)
-            ->setBindings(array($bindingName => new Reference('foo')))
+            ->setBindings([$bindingName => new Reference('foo')])
             ->addTag('controller.service_arguments');
 
         $pass = new RegisterControllerArgumentLocatorsPass();
@@ -303,17 +303,17 @@ public function testBindings($bindingName)
 
         $locator = $container->getDefinition((string) $locator['foo::fooAction']->getValues()[0]);
 
-        $expected = array('bar' => new ServiceClosureArgument(new Reference('foo')));
+        $expected = ['bar' => new ServiceClosureArgument(new Reference('foo'))];
         $this->assertEquals($expected, $locator->getArgument(0));
     }
 
     public function provideBindings()
     {
-        return array(
-            array(ControllerDummy::class.'$bar'),
-            array(ControllerDummy::class),
-            array('$bar'),
-        );
+        return [
+            [ControllerDummy::class.'$bar'],
+            [ControllerDummy::class],
+            ['$bar'],
+        ];
     }
 
     /**
@@ -322,10 +322,10 @@ public function provideBindings()
     public function testBindScalarValueToControllerArgument($bindingKey)
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('foo', ArgumentWithoutTypeController::class)
-            ->setBindings(array($bindingKey => '%foo%'))
+            ->setBindings([$bindingKey => '%foo%'])
             ->addTag('controller.service_arguments');
 
         $container->setParameter('foo', 'foo_val');
@@ -350,19 +350,19 @@ public function testBindScalarValueToControllerArgument($bindingKey)
 
     public function provideBindScalarValueToControllerArgument()
     {
-        yield array('$someArg');
-        yield array('string $someArg');
+        yield ['$someArg'];
+        yield ['string $someArg'];
     }
 
     public function testBindingsOnChildDefinitions()
     {
         $container = new ContainerBuilder();
-        $resolver = $container->register('argument_resolver.service')->addArgument(array());
+        $resolver = $container->register('argument_resolver.service')->addArgument([]);
 
         $container->register('parent', ArgumentWithoutTypeController::class);
 
         $container->setDefinition('child', (new ChildDefinition('parent'))
-            ->setBindings(array('$someArg' => new Reference('parent')))
+            ->setBindings(['$someArg' => new Reference('parent')])
             ->addTag('controller.service_arguments')
         );
 
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
index 0dfaa79682c6..bc7236f0a84e 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
@@ -68,12 +68,12 @@ public function testDeliverWithUnsuccessfulResponse()
 
     public function testRender()
     {
-        $handler = $this->getHandler($this->returnValue(new Response('foo')), array('/', Request::create('/'), array('foo' => 'foo', 'ignore_errors' => true)));
+        $handler = $this->getHandler($this->returnValue(new Response('foo')), ['/', Request::create('/'), ['foo' => 'foo', 'ignore_errors' => true]]);
 
-        $this->assertEquals('foo', $handler->render('/', 'foo', array('foo' => 'foo')));
+        $this->assertEquals('foo', $handler->render('/', 'foo', ['foo' => 'foo']));
     }
 
-    protected function getHandler($returnValue, $arguments = array())
+    protected function getHandler($returnValue, $arguments = [])
     {
         $renderer = $this->getMockBuilder('Symfony\Component\HttpKernel\Fragment\FragmentRendererInterface')->getMock();
         $renderer
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/EsiTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/EsiTest.php
index 846caee4cc37..2049a1771a87 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/EsiTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/EsiTest.php
@@ -220,13 +220,13 @@ public function testHandleWhenResponseIsNot200AndAltIsPresent()
         $response1 = new Response('foo');
         $response1->setStatusCode(404);
         $response2 = new Response('bar');
-        $cache = $this->getCache(Request::create('/'), array($response1, $response2));
+        $cache = $this->getCache(Request::create('/'), [$response1, $response2]);
         $this->assertEquals('bar', $esi->handle($cache, '/', '/alt', false));
     }
 
     protected function getCache($request, $response)
     {
-        $cache = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpCache\HttpCache')->setMethods(array('getRequest', 'handle'))->disableOriginalConstructor()->getMock();
+        $cache = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpCache\HttpCache')->setMethods(['getRequest', 'handle'])->disableOriginalConstructor()->getMock();
         $cache->expects($this->any())
               ->method('getRequest')
               ->will($this->returnValue($request))
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/SsiTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/SsiTest.php
index 1f1fbf84996c..2b9d352c7c08 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/SsiTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/SsiTest.php
@@ -187,13 +187,13 @@ public function testHandleWhenResponseIsNot200AndAltIsPresent()
         $response1 = new Response('foo');
         $response1->setStatusCode(404);
         $response2 = new Response('bar');
-        $cache = $this->getCache(Request::create('/'), array($response1, $response2));
+        $cache = $this->getCache(Request::create('/'), [$response1, $response2]);
         $this->assertEquals('bar', $ssi->handle($cache, '/', '/alt', false));
     }
 
     protected function getCache($request, $response)
     {
-        $cache = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpCache\HttpCache')->setMethods(array('getRequest', 'handle'))->disableOriginalConstructor()->getMock();
+        $cache = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpCache\HttpCache')->setMethods(['getRequest', 'handle'])->disableOriginalConstructor()->getMock();
         $cache->expects($this->any())
               ->method('getRequest')
               ->will($this->returnValue($request))
diff --git a/src/Symfony/Component/Intl/Data/Generator/LanguageDataGenerator.php b/src/Symfony/Component/Intl/Data/Generator/LanguageDataGenerator.php
index eb26031ad05d..258670f5eacf 100644
--- a/src/Symfony/Component/Intl/Data/Generator/LanguageDataGenerator.php
+++ b/src/Symfony/Component/Intl/Data/Generator/LanguageDataGenerator.php
@@ -29,7 +29,7 @@ class LanguageDataGenerator extends AbstractDataGenerator
     /**
      * Source: http://www-01.sil.org/iso639-3/codes.asp.
      */
-    private static $preferredAlpha2ToAlpha3Mapping = array(
+    private static $preferredAlpha2ToAlpha3Mapping = [
         'ak' => 'aka',
         'ar' => 'ara',
         'ay' => 'aym',
@@ -81,20 +81,20 @@ class LanguageDataGenerator extends AbstractDataGenerator
         'yi' => 'yid',
         'za' => 'zha',
         'zh' => 'zho',
-    );
-    private static $blacklist = array(
+    ];
+    private static $blacklist = [
         'mul' => true, // Multiple languages
         'mis' => true, // Uncoded language
         'und' => true, // Unknown language
         'zxx' => true, // No linguistic content
-    );
+    ];
 
     /**
      * Collects all available language codes.
      *
      * @var string[]
      */
-    private $languageCodes = array();
+    private $languageCodes = [];
 
     /**
      * {@inheritdoc}
@@ -118,7 +118,7 @@ protected function compileTemporaryBundles(GenrbCompiler $compiler, $sourceDir,
      */
     protected function preGenerate()
     {
-        $this->languageCodes = array();
+        $this->languageCodes = [];
     }
 
     /**
@@ -130,10 +130,10 @@ protected function generateDataForLocale(BundleReaderInterface $reader, $tempDir
 
         // isset() on \ResourceBundle returns true even if the value is null
         if (isset($localeBundle['Languages']) && null !== $localeBundle['Languages']) {
-            $data = array(
+            $data = [
                 'Version' => $localeBundle['Version'],
                 'Names' => self::generateLanguageNames($localeBundle),
-            );
+            ];
 
             $this->languageCodes = array_merge($this->languageCodes, array_keys($data['Names']));
 
@@ -160,12 +160,12 @@ protected function generateDataForMeta(BundleReaderInterface $reader, $tempDir)
 
         sort($this->languageCodes);
 
-        return array(
+        return [
             'Version' => $rootBundle['Version'],
             'Languages' => $this->languageCodes,
             'Aliases' => array_column(iterator_to_array($metadataBundle['alias']['language']), 'replacement'),
             'Alpha2ToAlpha3' => $this->generateAlpha2ToAlpha3Mapping($metadataBundle),
-        );
+        ];
     }
 
     private static function generateLanguageNames(ArrayAccessibleResourceBundle $localeBundle): array
@@ -176,7 +176,7 @@ private static function generateLanguageNames(ArrayAccessibleResourceBundle $loc
     private function generateAlpha2ToAlpha3Mapping(ArrayAccessibleResourceBundle $metadataBundle)
     {
         $aliases = iterator_to_array($metadataBundle['alias']['language']);
-        $alpha2ToAlpha3 = array();
+        $alpha2ToAlpha3 = [];
 
         foreach ($aliases as $alias => $language) {
             $language = $language['replacement'];
diff --git a/src/Symfony/Component/Intl/Data/Util/LocaleScanner.php b/src/Symfony/Component/Intl/Data/Util/LocaleScanner.php
index 1ea4ba6f1a2a..2d56ff9d0cf1 100644
--- a/src/Symfony/Component/Intl/Data/Util/LocaleScanner.php
+++ b/src/Symfony/Component/Intl/Data/Util/LocaleScanner.php
@@ -89,7 +89,7 @@ public function scanAliases($sourceDir)
     public function scanParents(string $sourceDir): array
     {
         $locales = $this->scanLocales($sourceDir);
-        $fallbacks = array();
+        $fallbacks = [];
 
         foreach ($locales as $locale) {
             $content = \file_get_contents($sourceDir.'/'.$locale.'.txt');
diff --git a/src/Symfony/Component/Intl/Tests/Data/Util/LocaleScannerTest.php b/src/Symfony/Component/Intl/Tests/Data/Util/LocaleScannerTest.php
index abbe7f83f83e..03a616a6ab19 100644
--- a/src/Symfony/Component/Intl/Tests/Data/Util/LocaleScannerTest.php
+++ b/src/Symfony/Component/Intl/Tests/Data/Util/LocaleScannerTest.php
@@ -69,21 +69,21 @@ protected function tearDown()
 
     public function testScanLocales()
     {
-        $sortedLocales = array('de', 'de_alias', 'de_child', 'en', 'en_alias', 'en_child', 'fr', 'fr_alias', 'fr_child');
+        $sortedLocales = ['de', 'de_alias', 'de_child', 'en', 'en_alias', 'en_child', 'fr', 'fr_alias', 'fr_child'];
 
         $this->assertSame($sortedLocales, $this->scanner->scanLocales($this->directory));
     }
 
     public function testScanAliases()
     {
-        $sortedAliases = array('de_alias' => 'de', 'en_alias' => 'en', 'fr_alias' => 'fr');
+        $sortedAliases = ['de_alias' => 'de', 'en_alias' => 'en', 'fr_alias' => 'fr'];
 
         $this->assertSame($sortedAliases, $this->scanner->scanAliases($this->directory));
     }
 
     public function testScanParents()
     {
-        $sortedParents = array('de_child' => 'de', 'en_child' => 'en', 'fr_child' => 'fr');
+        $sortedParents = ['de_child' => 'de', 'en_child' => 'en', 'fr_child' => 'fr'];
 
         $this->assertSame($sortedParents, $this->scanner->scanParents($this->directory));
     }
diff --git a/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php b/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
index 1d2e47076f34..e7bdb7102a34 100644
--- a/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
+++ b/src/Symfony/Component/Intl/Tests/Locale/LocaleTest.php
@@ -39,11 +39,11 @@ public function testCanonicalize()
      */
     public function testComposeLocale()
     {
-        $subtags = array(
+        $subtags = [
             'language' => 'pt',
             'script' => 'Latn',
             'region' => 'BR',
-        );
+        ];
         $this->call('composeLocale', $subtags);
     }
 
@@ -140,10 +140,10 @@ public function testGetScript()
      */
     public function testLookup()
     {
-        $langtag = array(
+        $langtag = [
             'pt-Latn-BR',
             'pt-BR',
-        );
+        ];
         $this->call('lookup', $langtag, 'pt-BR-x-priv1');
     }
 
diff --git a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Connection.php b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Connection.php
index 73b127ce5e33..8ba19ee73137 100644
--- a/src/Symfony/Component/Ldap/Adapter/ExtLdap/Connection.php
+++ b/src/Symfony/Component/Ldap/Adapter/ExtLdap/Connection.php
@@ -100,10 +100,10 @@ protected function configureOptions(OptionsResolver $resolver)
                 $options->setDefault('debug_level', 7);
             }
 
-            $options->setDefaults(array(
+            $options->setDefaults([
                 'protocol_version' => $parent['version'],
                 'referrals' => $parent['referrals'],
-            ));
+            ]);
         });
     }
 
diff --git a/src/Symfony/Component/Ldap/Adapter/ExtLdap/EntryManager.php b/src/Symfony/Component/Ldap/Adapter/ExtLdap/EntryManager.php
index f1663a201017..f80601b3baa4 100644
--- a/src/Symfony/Component/Ldap/Adapter/ExtLdap/EntryManager.php
+++ b/src/Symfony/Component/Ldap/Adapter/ExtLdap/EntryManager.php
@@ -130,7 +130,7 @@ private function getConnectionResource()
      */
     public function applyOperations(string $dn, iterable $operations): void
     {
-        $operationsMapped = array();
+        $operationsMapped = [];
         foreach ($operations as $modification) {
             $operationsMapped[] = $modification->toArray();
         }
diff --git a/src/Symfony/Component/Ldap/Adapter/ExtLdap/UpdateOperation.php b/src/Symfony/Component/Ldap/Adapter/ExtLdap/UpdateOperation.php
index 7bf3d32f37db..c09b1b8e108a 100644
--- a/src/Symfony/Component/Ldap/Adapter/ExtLdap/UpdateOperation.php
+++ b/src/Symfony/Component/Ldap/Adapter/ExtLdap/UpdateOperation.php
@@ -19,12 +19,12 @@ class UpdateOperation
     private $values;
     private $attribute;
 
-    private $validOperationTypes = array(
+    private $validOperationTypes = [
         LDAP_MODIFY_BATCH_ADD,
         LDAP_MODIFY_BATCH_REMOVE,
         LDAP_MODIFY_BATCH_REMOVE_ALL,
         LDAP_MODIFY_BATCH_REPLACE,
-    );
+    ];
 
     /**
      * @param int    $operationType An LDAP_MODIFY_BATCH_* constant
@@ -48,10 +48,10 @@ public function __construct(int $operationType, string $attribute, ?array $value
 
     public function toArray(): array
     {
-        return array(
+        return [
             'attrib' => $this->attribute,
             'modtype' => $this->operationType,
             'values' => $this->values,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php b/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
index da21433a1e4f..18c1461e9803 100644
--- a/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
+++ b/src/Symfony/Component/Ldap/Tests/Adapter/ExtLdap/LdapManagerTest.php
@@ -250,7 +250,7 @@ public function testLdapApplyOperationsRemoveAllWithArrayError()
 
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}(UpdateOperationException::class);
 
-        $entryManager->applyOperations($entry->getDn(), array(new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE_ALL, 'mail', array())));
+        $entryManager->applyOperations($entry->getDn(), [new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE_ALL, 'mail', [])]);
     }
 
     public function testLdapApplyOperationsWithWrongConstantError()
@@ -262,7 +262,7 @@ public function testLdapApplyOperationsWithWrongConstantError()
 
         $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}(UpdateOperationException::class);
 
-        $entryManager->applyOperations($entry->getDn(), array(new UpdateOperation(512, 'mail', array())));
+        $entryManager->applyOperations($entry->getDn(), [new UpdateOperation(512, 'mail', [])]);
     }
 
     public function testApplyOperationsAddRemoveAttributeValues()
@@ -272,20 +272,20 @@ public function testApplyOperationsAddRemoveAttributeValues()
         $result = $this->executeSearchQuery(1);
         $entry = $result[0];
 
-        $entryManager->applyOperations($entry->getDn(), array(
-            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', array('fabpot@example.org', 'fabpot2@example.org')),
-            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', array('fabpot3@example.org', 'fabpot4@example.org')),
-        ));
+        $entryManager->applyOperations($entry->getDn(), [
+            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', ['fabpot@example.org', 'fabpot2@example.org']),
+            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', ['fabpot3@example.org', 'fabpot4@example.org']),
+        ]);
 
         $result = $this->executeSearchQuery(1);
         $newEntry = $result[0];
 
         $this->assertCount(6, $newEntry->getAttribute('mail'));
 
-        $entryManager->applyOperations($entry->getDn(), array(
-            new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE, 'mail', array('fabpot@example.org', 'fabpot2@example.org')),
-            new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE, 'mail', array('fabpot3@example.org', 'fabpot4@example.org')),
-        ));
+        $entryManager->applyOperations($entry->getDn(), [
+            new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE, 'mail', ['fabpot@example.org', 'fabpot2@example.org']),
+            new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE, 'mail', ['fabpot3@example.org', 'fabpot4@example.org']),
+        ]);
 
         $result = $this->executeSearchQuery(1);
         $newNewEntry = $result[0];
@@ -295,15 +295,15 @@ public function testApplyOperationsAddRemoveAttributeValues()
 
     public function testUpdateOperationsWithIterator()
     {
-        $iteratorAdd = new \ArrayIterator(array(
-            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', array('fabpot@example.org', 'fabpot2@example.org')),
-            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', array('fabpot3@example.org', 'fabpot4@example.org')),
-        ));
+        $iteratorAdd = new \ArrayIterator([
+            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', ['fabpot@example.org', 'fabpot2@example.org']),
+            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', ['fabpot3@example.org', 'fabpot4@example.org']),
+        ]);
 
-        $iteratorRemove = new \ArrayIterator(array(
-            new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE, 'mail', array('fabpot@example.org', 'fabpot2@example.org')),
-            new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE, 'mail', array('fabpot3@example.org', 'fabpot4@example.org')),
-        ));
+        $iteratorRemove = new \ArrayIterator([
+            new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE, 'mail', ['fabpot@example.org', 'fabpot2@example.org']),
+            new UpdateOperation(LDAP_MODIFY_BATCH_REMOVE, 'mail', ['fabpot3@example.org', 'fabpot4@example.org']),
+        ]);
 
         $entryManager = $this->adapter->getEntryManager();
 
@@ -327,10 +327,10 @@ public function testUpdateOperationsWithIterator()
 
     public function testUpdateOperationsThrowsExceptionWhenAddedDuplicatedValue()
     {
-        $duplicateIterator = new \ArrayIterator(array(
-            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', array('fabpot@example.org')),
-            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', array('fabpot@example.org')),
-        ));
+        $duplicateIterator = new \ArrayIterator([
+            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', ['fabpot@example.org']),
+            new UpdateOperation(LDAP_MODIFY_BATCH_ADD, 'mail', ['fabpot@example.org']),
+        ]);
 
         $entryManager = $this->adapter->getEntryManager();
 
diff --git a/src/Symfony/Component/Lock/Lock.php b/src/Symfony/Component/Lock/Lock.php
index 03ac44cd12f3..97117a820417 100644
--- a/src/Symfony/Component/Lock/Lock.php
+++ b/src/Symfony/Component/Lock/Lock.php
@@ -76,7 +76,7 @@ public function acquire($blocking = false)
             }
 
             $this->dirty = true;
-            $this->logger->info('Successfully acquired the "{resource}" lock.', array('resource' => $this->key));
+            $this->logger->info('Successfully acquired the "{resource}" lock.', ['resource' => $this->key]);
 
             if ($this->ttl) {
                 $this->refresh();
@@ -89,7 +89,7 @@ public function acquire($blocking = false)
             return true;
         } catch (LockConflictedException $e) {
             $this->dirty = false;
-            $this->logger->notice('Failed to acquire the "{resource}" lock. Someone else already acquired the lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to acquire the "{resource}" lock. Someone else already acquired the lock.', ['resource' => $this->key]);
 
             if ($blocking) {
                 throw $e;
@@ -97,7 +97,7 @@ public function acquire($blocking = false)
 
             return false;
         } catch (\Exception $e) {
-            $this->logger->notice('Failed to acquire the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
+            $this->logger->notice('Failed to acquire the "{resource}" lock.', ['resource' => $this->key, 'exception' => $e]);
             throw new LockAcquiringException(sprintf('Failed to acquire the "%s" lock.', $this->key), 0, $e);
         }
     }
@@ -123,13 +123,13 @@ public function refresh($ttl = null)
                 throw new LockExpiredException(sprintf('Failed to put off the expiration of the "%s" lock within the specified time.', $this->key));
             }
 
-            $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', array('resource' => $this->key, 'ttl' => $ttl));
+            $this->logger->info('Expiration defined for "{resource}" lock for "{ttl}" seconds.', ['resource' => $this->key, 'ttl' => $ttl]);
         } catch (LockConflictedException $e) {
             $this->dirty = false;
-            $this->logger->notice('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to define an expiration for the "{resource}" lock, someone else acquired the lock.', ['resource' => $this->key]);
             throw $e;
         } catch (\Exception $e) {
-            $this->logger->notice('Failed to define an expiration for the "{resource}" lock.', array('resource' => $this->key, 'exception' => $e));
+            $this->logger->notice('Failed to define an expiration for the "{resource}" lock.', ['resource' => $this->key, 'exception' => $e]);
             throw new LockAcquiringException(sprintf('Failed to define an expiration for the "%s" lock.', $this->key), 0, $e);
         }
     }
@@ -161,7 +161,7 @@ public function release()
                 throw new LockReleasingException(sprintf('Failed to release the "%s" lock, the resource is still locked.', $this->key));
             }
         } catch (LockReleasingException $e) {
-            $this->logger->notice('Failed to release the "{resource}" lock.', array('resource' => $this->key));
+            $this->logger->notice('Failed to release the "{resource}" lock.', ['resource' => $this->key]);
             throw $e;
         }
     }
diff --git a/src/Symfony/Component/Lock/Store/PdoStore.php b/src/Symfony/Component/Lock/Store/PdoStore.php
index 710eca668f51..f51149d02e64 100644
--- a/src/Symfony/Component/Lock/Store/PdoStore.php
+++ b/src/Symfony/Component/Lock/Store/PdoStore.php
@@ -45,7 +45,7 @@ class PdoStore implements StoreInterface
     private $expirationCol = 'key_expiration';
     private $username = '';
     private $password = '';
-    private $connectionOptions = array();
+    private $connectionOptions = [];
     private $gcProbability;
     private $initialTtl;
 
@@ -73,7 +73,7 @@ class PdoStor
10000
e implements StoreInterface
      * @throws InvalidArgumentException When namespace contains invalid characters
      * @throws InvalidArgumentException When the initial ttl is not valid
      */
-    public function __construct($connOrDsn, array $options = array(), float $gcProbability = 0.01, int $initialTtl = 300)
+    public function __construct($connOrDsn, array $options = [], float $gcProbability = 0.01, int $initialTtl = 300)
     {
         if ($gcProbability < 0 || $gcProbability > 1) {
             throw new InvalidArgumentException(sprintf('"%s" requires gcProbability between 0 and 1, "%f" given.', __METHOD__, $gcProbability));
@@ -258,10 +258,10 @@ public function createTable(): void
         if ($conn instanceof Connection) {
             $schema = new Schema();
             $table = $schema->createTable($this->table);
-            $table->addColumn($this->idCol, 'string', array('length' => 64));
-            $table->addColumn($this->tokenCol, 'string', array('length' => 44));
-            $table->addColumn($this->expirationCol, 'integer', array('unsigned' => true));
-            $table->setPrimaryKey(array($this->idCol));
+            $table->addColumn($this->idCol, 'string', ['length' => 64]);
+            $table->addColumn($this->tokenCol, 'string', ['length' => 44]);
+            $table->addColumn($this->expirationCol, 'integer', ['unsigned' => true]);
+            $table->setPrimaryKey([$this->idCol]);
 
             foreach ($schema->toSql($conn->getDatabasePlatform()) as $sql) {
                 $conn->exec($sql);
diff --git a/src/Symfony/Component/Lock/Store/RedisStore.php b/src/Symfony/Component/Lock/Store/RedisStore.php
index 08965dbfb162..d07a2ce27f7f 100644
--- a/src/Symfony/Component/Lock/Store/RedisStore.php
+++ b/src/Symfony/Component/Lock/Store/RedisStore.php
@@ -63,7 +63,7 @@ public function save(Key $key)
         ';
 
         $key->reduceLifetime($this->initialTtl);
-        if (!$this->evaluate($script, (string) $key, array($this->getUniqueToken($key), (int) ceil($this->initialTtl * 1000)))) {
+        if (!$this->evaluate($script, (string) $key, [$this->getUniqueToken($key), (int) ceil($this->initialTtl * 1000)])) {
             throw new LockConflictedException();
         }
 
@@ -91,7 +91,7 @@ public function putOffExpiration(Key $key, $ttl)
         ';
 
         $key->reduceLifetime($ttl);
-        if (!$this->evaluate($script, (string) $key, array($this->getUniqueToken($key), (int) ceil($ttl * 1000)))) {
+        if (!$this->evaluate($script, (string) $key, [$this->getUniqueToken($key), (int) ceil($ttl * 1000)])) {
             throw new LockConflictedException();
         }
 
@@ -113,7 +113,7 @@ public function delete(Key $key)
             end
         ';
 
-        $this->evaluate($script, (string) $key, array($this->getUniqueToken($key)));
+        $this->evaluate($script, (string) $key, [$this->getUniqueToken($key)]);
     }
 
     /**
@@ -137,15 +137,15 @@ private function evaluate(string $script, string $resource, array $args)
             $this->redis instanceof RedisProxy ||
             $this->redis instanceof RedisClusterProxy
         ) {
-            return $this->redis->eval($script, array_merge(array($resource), $args), 1);
+            return $this->redis->eval($script, array_merge([$resource], $args), 1);
         }
 
         if ($this->redis instanceof \RedisArray) {
-            return $this->redis->_instance($this->redis->_target($resource))->eval($script, array_merge(array($resource), $args), 1);
+            return $this->redis->_instance($this->redis->_target($resource))->eval($script, array_merge([$resource], $args), 1);
         }
 
         if ($this->redis instanceof \Predis\Client) {
-            return $this->redis->eval(...array_merge(array($script, 1, $resource), $args));
+            return $this->redis->eval(...array_merge([$script, 1, $resource], $args));
         }
 
         throw new InvalidArgumentException(sprintf('%s() expects being initialized with a Redis, RedisArray, RedisCluster or Predis\Client, %s given', __METHOD__, \is_object($this->redis) ? \get_class($this->redis) : \gettype($this->redis)));
diff --git a/src/Symfony/Component/Lock/Store/ZookeeperStore.php b/src/Symfony/Component/Lock/Store/ZookeeperStore.php
index 2304dd47a088..c755ce1a1c4a 100644
--- a/src/Symfony/Component/Lock/Store/ZookeeperStore.php
+++ b/src/Symfony/Component/Lock/Store/ZookeeperStore.php
@@ -106,7 +106,7 @@ public function putOffExpiration(Key $key, $ttl)
     private function createNewLock(string $node, string $value)
     {
         // Default Node Permissions
-        $acl = array(array('perms' => \Zookeeper::PERM_ALL, 'scheme' => 'world', 'id' => 'anyone'));
+        $acl = [['perms' => \Zookeeper::PERM_ALL, 'scheme' => 'world', 'id' => 'anyone']];
         // This ensures that the nodes are deleted when the client session to zookeeper server ends.
         $type = \Zookeeper::EPHEMERAL;
 
@@ -128,7 +128,7 @@ private function getKeyResource(Key $key): string
         $resource = (string) $key;
 
         if (false !== \strpos($resource, '/')) {
-            $resource = \strtr($resource, array('/' => '-')).'-'.sha1($resource);
+            $resource = \strtr($resource, ['/' => '-']).'-'.sha1($resource);
         }
 
         if ('' === $resource) {
diff --git a/src/Symfony/Component/Lock/Tests/Store/BlockingStoreTestTrait.php b/src/Symfony/Component/Lock/Tests/Store/BlockingStoreTestTrait.php
index 0d91175c0c7c..21f1245e7e68 100644
--- a/src/Symfony/Component/Lock/Tests/Store/BlockingStoreTestTrait.php
+++ b/src/Symfony/Component/Lock/Tests/Store/BlockingStoreTestTrait.php
@@ -45,11 +45,11 @@ public function testBlockingLocks()
         $parentPID = posix_getpid();
 
         // Block SIGHUP signal
-        pcntl_sigprocmask(SIG_BLOCK, array(SIGHUP));
+        pcntl_sigprocmask(SIG_BLOCK, [SIGHUP]);
 
         if ($childPID = pcntl_fork()) {
             // Wait the start of the child
-            pcntl_sigwaitinfo(array(SIGHUP), $info);
+            pcntl_sigwaitinfo([SIGHUP], $info);
 
             $store = $this->getStore();
             try {
@@ -72,7 +72,7 @@ public function testBlockingLocks()
             $this->assertSame(0, pcntl_wexitstatus($status1), 'The child process couldn\'t lock the resource');
         } else {
             // Block SIGHUP signal
-            pcntl_sigprocmask(SIG_BLOCK, array(SIGHUP));
+            pcntl_sigprocmask(SIG_BLOCK, [SIGHUP]);
 
             $store = $this->getStore();
             try {
@@ -81,7 +81,7 @@ public function testBlockingLocks()
                 posix_kill($parentPID, SIGHUP);
 
                 // Wait for the parent to be ready
-                pcntl_sigwaitinfo(array(SIGHUP), $info);
+                pcntl_sigwaitinfo([SIGHUP], $info);
 
                 // Wait ClockDelay to let parent assert to finish
                 usleep($clockDelay);
diff --git a/src/Symfony/Component/Lock/Tests/Store/PdoDbalStoreTest.php b/src/Symfony/Component/Lock/Tests/Store/PdoDbalStoreTest.php
index e72fbcf76b5e..0dd32c08473e 100644
--- a/src/Symfony/Component/Lock/Tests/Store/PdoDbalStoreTest.php
+++ b/src/Symfony/Component/Lock/Tests/Store/PdoDbalStoreTest.php
@@ -29,7 +29,7 @@ public static function setupBeforeClass()
     {
         self::$dbFile = tempnam(sys_get_temp_dir(), 'sf_sqlite_lock');
 
-        $store = new PdoStore(DriverManager::getConnection(array('driver' => 'pdo_sqlite', 'path' => self::$dbFile)));
+        $store = new PdoStore(DriverManager::getConnection(['driver' => 'pdo_sqlite', 'path' => self::$dbFile]));
         $store->createTable();
     }
 
@@ -51,7 +51,7 @@ protected function getClockDelay()
      */
     public function getStore()
     {
-        return new PdoStore(DriverManager::getConnection(array('driver' => 'pdo_sqlite', 'path' => self::$dbFile)));
+        return new PdoStore(DriverManager::getConnection(['driver' => 'pdo_sqlite', 'path' => self::$dbFile]));
     }
 
     public function testAbortAfterExpiration()
diff --git a/src/Symfony/Component/Lock/Tests/Store/ZookeeperStoreTest.php b/src/Symfony/Component/Lock/Tests/Store/ZookeeperStoreTest.php
index 73be28bcca3e..0ba6d73b9f37 100644
--- a/src/Symfony/Component/Lock/Tests/Store/ZookeeperStoreTest.php
+++ b/src/Symfony/Component/Lock/Tests/Store/ZookeeperStoreTest.php
@@ -26,7 +26,7 @@ public function getStore(): ZookeeperStore
     {
         $zookeeper_server = getenv('ZOOKEEPER_HOST').':2181';
 
-        $zookeeper = new \Zookeeper(implode(',', array($zookeeper_server)));
+        $zookeeper = new \Zookeeper(implode(',', [$zookeeper_server]));
 
         return StoreFactory::createStore($zookeeper);
     }
diff --git a/src/Symfony/Component/Messenger/Command/ConsumeMessagesCommand.php b/src/Symfony/Component/Messenger/Command/ConsumeMessagesCommand.php
index 83b834c59303..c455dbafbbc9 100644
--- a/src/Symfony/Component/Messenger/Command/ConsumeMessagesCommand.php
+++ b/src/Symfony/Component/Messenger/Command/ConsumeMessagesCommand.php
@@ -40,7 +40,7 @@ class ConsumeMessagesCommand extends Command
     private $receiverNames;
     private $busNames;
 
-    public function __construct(ContainerInterface $busLocator, ContainerInterface $receiverLocator, LoggerInterface $logger = null, array $receiverNames = array(), array $busNames = array())
+    public function __construct(ContainerInterface $busLocator, ContainerInterface $receiverLocator, LoggerInterface $logger = null, array $receiverNames = [], array $busNames = [])
     {
         $this->busLocator = $busLocator;
         $this->receiverLocator = $receiverLocator;
@@ -60,13 +60,13 @@ protected function configure(): void
         $defaultBusName = 1 === \count($this->busNames) ? current($this->busNames) : null;
 
         $this
-            ->setDefinition(array(
+            ->setDefinition([
                 new InputArgument('receiver', $defaultReceiverName ? InputArgument::OPTIONAL : InputArgument::REQUIRED, 'Name of the receiver', $defaultReceiverName),
                 new InputOption('limit', 'l', InputOption::VALUE_REQUIRED, 'Limit the number of received messages'),
                 new InputOption('memory-limit', 'm', InputOption::VALUE_REQUIRED, 'The memory limit the worker can consume'),
                 new InputOption('time-limit', 't', InputOption::VALUE_REQUIRED, 'The time limit in seconds the worker can run'),
                 new InputOption('bus', 'b', InputOption::VALUE_REQUIRED, 'Name of the bus to which received messages should be dispatched', $defaultBusName),
-            ))
+            ])
             ->setDescription('Consumes messages')
             ->setHelp(<<<'EOF'
 The <info>%command.name%</info> command consumes messages and dispatches them to the message bus.
@@ -186,7 +186,7 @@ private function convertToBytes(string $memoryLimit): int
 
     private function findAlternatives($name, array $collection)
     {
-        $alternatives = array();
+        $alternatives = [];
         foreach ($collection as $item) {
             $lev = levenshtein($name, $item);
             if ($lev <= \strlen($name) / 3 || false !== strpos($item, $name)) {
diff --git a/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php b/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
index d36c70f4ef35..5d33f735b24a 100644
--- a/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
+++ b/src/Symfony/Component/Messenger/DataCollector/MessengerDataCollector.php
@@ -25,7 +25,7 @@
  */
 class MessengerDataCollector extends DataCollector implements LateDataCollectorInterface
 {
-    private $traceableBuses = array();
+    private $traceableBuses = [];
 
     public function registerBus(string $name, TraceableMessageBus $bus)
     {
@@ -45,13 +45,13 @@ public function collect(Request $request, Response $response, \Exception $except
      */
     public function lateCollect()
     {
-        $this->data = array('messages' => array(), 'buses' => array_keys($this->traceableBuses));
+        $this->data = ['messages' => [], 'buses' => array_keys($this->traceableBuses)];
 
-        $messages = array();
+        $messages = [];
         foreach ($this->traceableBuses as $busName => $bus) {
             foreach ($bus->getDispatchedMessages() as $message) {
                 $debugRepresentation = $this->cloneVar($this->collectMessage($busName, $message));
-                $messages[] = array($debugRepresentation, $message['callTime']);
+                $messages[] = [$debugRepresentation, $message['callTime']];
             }
         }
 
@@ -75,7 +75,7 @@ public function getName()
      */
     public function reset()
     {
-        $this->data = array();
+        $this->data = [];
         foreach ($this->traceableBuses as $traceableBus) {
             $traceableBus->reset();
         }
@@ -85,23 +85,23 @@ private function collectMessage(string $busName, array $tracedMessage)
     {
         $message = $tracedMessage['message'];
 
-        $debugRepresentation = array(
+        $debugRepresentation = [
             'bus' => $busName,
             'stamps' => $tracedMessage['stamps'] ?? null,
-            'message' => array(
+            'message' => [
                 'type' => new ClassStub(\get_class($message)),
                 'value' => $message,
-            ),
+            ],
             'caller' => $tracedMessage['caller'],
-        );
+        ];
 
         if (isset($tracedMessage['exception'])) {
             $exception = $tracedMessage['exception'];
 
-            $debugRepresentation['exception'] = array(
+            $debugRepresentation['exception'] = [
                 'type' => \get_class($exception),
                 'value' => $exception,
-            );
+            ];
         }
 
         return $debugRepresentation;
diff --git a/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php b/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php
index 5a18dd8683ea..8c4773462e18 100644
--- a/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php
+++ b/src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php
@@ -47,7 +47,7 @@ public function __construct(string $handlerTag = 'messenger.message_handler', st
      */
     public function process(ContainerBuilder $container)
     {
-        $busIds = array();
+        $busIds = [];
         foreach ($container->findTaggedServiceIds($this->busTag) as $busId => $tags) {
             $busIds[] = $busId;
             if ($container->hasParameter($busMiddlewareParameter = $busId.'.middleware')) {
@@ -69,8 +69,8 @@ public function process(ContainerBuilder $container)
 
     private function registerHandlers(ContainerBuilder $container, array $busIds)
     {
-        $definitions = array();
-        $handlersByBusAndMessage = array();
+        $definitions = [];
+        $handlersByBusAndMessage = [];
 
         foreach ($container->findTaggedServiceIds($this->handlerTag, true) as $serviceId => $tags) {
             foreach ($tags as $tag) {
@@ -86,7 +86,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
                 }
 
                 if (isset($tag['handles'])) {
-                    $handles = isset($tag['method']) ? array($tag['handles'] => $tag['method']) : array($tag['handles']);
+                    $handles = isset($tag['method']) ? [$tag['handles'] => $tag['method']] : [$tag['handles']];
                 } else {
                     $handles = $this->guessHandledClasses($r, $serviceId);
                 }
@@ -115,7 +115,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
                                 throw new RuntimeException(sprintf('Invalid configuration %s for message "%s": bus "%s" does not exist.', $messageLocation, $message, $method['bus']));
                             }
 
-                            $buses = array($method['bus']);
+                            $buses = [$method['bus']];
                         }
 
                         $priority = $method['priority'] ?? $priority;
@@ -133,7 +133,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
                     }
 
                     if ('__invoke' !== $method) {
-                        $wrapperDefinition = (new Definition('callable'))->addArgument(array(new Reference($serviceId), $method))->setFactory('Closure::fromCallable');
+                        $wrapperDefinition = (new Definition('callable'))->addArgument([new Reference($serviceId), $method])->setFactory('Closure::fromCallable');
 
                         $definitions[$definitionId = '.messenger.method_on_object_wrapper.'.ContainerBuilder::hash($message.':'.$priority.':'.$serviceId.':'.$method)] = $wrapperDefinition;
                     } else {
@@ -158,7 +158,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
             }
         }
 
-        $handlersLocatorMappingByBus = array();
+        $handlersLocatorMappingByBus = [];
         foreach ($handlersByBusAndMessage as $bus => $handlersByMessage) {
             foreach ($handlersByMessage as $message => $handlerIds) {
                 $handlers = array_map(function (string $handlerId) { return new Reference($handlerId); }, $handlerIds);
@@ -169,7 +169,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
 
         foreach ($busIds as $bus) {
             $container->register($locatorId = $bus.'.messenger.handlers_locator', HandlersLocator::class)
-                ->setArgument(0, $handlersLocatorMappingByBus[$bus] ?? array())
+                ->setArgument(0, $handlersLocatorMappingByBus[$bus] ?? [])
             ;
             if ($container->has($handleMessageId = $bus.'.middleware.handle_message')) {
                 $container->getDefinition($handleMessageId)
@@ -182,7 +182,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
             $debugCommandMapping = $handlersByBusAndMessage;
             foreach ($busIds as $bus) {
                 if (!isset($debugCommandMapping[$bus])) {
-                    $debugCommandMapping[$bus] = array();
+                    $debugCommandMapping[$bus] = [];
                 }
             }
             $container->getDefinition('console.command.messenger_debug')->replaceArgument(0, $debugCommandMapping);
@@ -214,12 +214,12 @@ private function guessHandledClasses(\ReflectionClass $handlerClass, string $ser
             throw new RuntimeException(sprintf('Invalid handler service "%s": type-hint of argument "$%s" in method "%s::__invoke()" must be a class , "%s" given.', $serviceId, $parameters[0]->getName(), $handlerClass->getName(), $type));
         }
 
-        return array((string) $parameters[0]->getType());
+        return [(string) $parameters[0]->getType()];
     }
 
     private function registerReceivers(ContainerBuilder $container, array $busIds)
     {
-        $receiverMapping = array();
+        $receiverMapping = [];
 
         foreach ($container->findTaggedServiceIds($this->receiverTag) as $id => $tags) {
             $receiverClass = $container->findDefinition($id)->getClass();
@@ -237,11 +237,11 @@ private function registerReceivers(ContainerBuilder $container, array $busIds)
         }
 
         if ($container->hasDefinition('console.command.messenger_consume_messages')) {
-            $receiverNames = array();
+            $receiverNames = [];
             foreach ($receiverMapping as $name => $reference) {
                 $receiverNames[(string) $reference] = $name;
             }
-            $buses = array();
+            $buses = [];
             foreach ($busIds as $busId) {
                 $buses[$busId] = new Reference($busId);
             }
@@ -259,18 +259,18 @@ private function registerBusToCollector(ContainerBuilder $container, string $bus
     {
         $container->setDefinition(
             $tracedBusId = 'debug.traced.'.$busId,
-            (new Definition(TraceableMessageBus::class, array(new Reference($tracedBusId.'.inner'))))->setDecoratedService($busId)
+            (new Definition(TraceableMessageBus::class, [new Reference($tracedBusId.'.inner')]))->setDecoratedService($busId)
         );
 
-        $container->getDefinition('data_collector.messenger')->addMethodCall('registerBus', array($busId, new Reference($tracedBusId)));
+        $container->getDefinition('data_collector.messenger')->addMethodCall('registerBus', [$busId, new Reference($tracedBusId)]);
     }
 
     private function registerBusMiddleware(ContainerBuilder $container, string $busId, array $middlewareCollection)
     {
-        $middlewareReferences = array();
+        $middlewareReferences = [];
         foreach ($middlewareCollection as $middlewareItem) {
             $id = $middlewareItem['id'];
-            $arguments = $middlewareItem['arguments'] ?? array();
+            $arguments = $middlewareItem['arguments'] ?? [];
             if (!$container->has($messengerMiddlewareId = 'messenger.middleware.'.$id)) {
                 $messengerMiddlewareId = $id;
             }
diff --git a/src/Symfony/Component/Messenger/Envelope.php b/src/Symfony/Component/Messenger/Envelope.php
index a6e7db847694..02d0dca12386 100644
--- a/src/Symfony/Component/Messenger/Envelope.php
+++ b/src/Symfony/Component/Messenger/Envelope.php
@@ -22,7 +22,7 @@
  */
 final class Envelope
 {
-    private $stamps = array();
+    private $stamps = [];
     private $message;
 
     /**
@@ -65,7 +65,7 @@ public function last(string $stampFqcn): ?StampInterface
     public function all(string $stampFqcn = null): array
     {
         if (null !== $stampFqcn) {
-            return $this->stamps[$stampFqcn] ?? array();
+            return $this->stamps[$stampFqcn] ?? [];
         }
 
         return $this->stamps;
diff --git a/src/Symfony/Component/Messenger/Handler/HandlersLocator.php b/src/Symfony/Component/Messenger/Handler/HandlersLocator.php
index d0642498bab8..9094eb3dbc12 100644
--- a/src/Symfony/Component/Messenger/Handler/HandlersLocator.php
+++ b/src/Symfony/Component/Messenger/Handler/HandlersLocator.php
@@ -37,10 +37,10 @@ public function __construct(array $handlers)
      */
     public function getHandlers(Envelope $envelope): iterable
     {
-        $seen = array();
+        $seen = [];
 
         foreach (self::listTypes($envelope) as $type) {
-            foreach ($this->handlers[$type] ?? array() as $alias => $handler) {
+            foreach ($this->handlers[$type] ?? [] as $alias => $handler) {
                 if (!\in_array($handler, $seen, true)) {
                     yield $alias => $seen[] = $handler;
                 }
@@ -55,9 +55,9 @@ public static function listTypes(Envelope $envelope): array
     {
         $class = \get_class($envelope->getMessage());
 
-        return array($class => $class)
+        return [$class => $class]
             + class_parents($class)
             + class_implements($class)
-            + array('*' => '*');
+            + ['*' => '*'];
     }
 }
diff --git a/src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php b/src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php
index 22c88edb7e7a..7518d018b837 100644
--- a/src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php
+++ b/src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php
@@ -34,10 +34,10 @@ public function __construct(LoggerInterface $logger)
     public function handle(Envelope $envelope, StackInterface $stack): Envelope
     {
         $message = $envelope->getMessage();
-        $context = array(
+        $context = [
             'message' => $message,
             'class' => \get_class($envelope->getMessage()),
-        );
+        ];
         $this->logger->debug('Starting handling message "{class}"', $context);
 
         try {
diff --git a/src/Symfony/Component/Messenger/Tests/Command/ConsumeMessagesCommandTest.php b/src/Symfony/Component/Messenger/Tests/Command/ConsumeMessagesCommandTest.php
index e5a1940d8c45..336cd8129cf4 100644
--- a/src/Symfony/Component/Messenger/Tests/Command/ConsumeMessagesCommandTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Command/ConsumeMessagesCommandTest.php
@@ -19,7 +19,7 @@ class ConsumeMessagesCommandTest extends TestCase
 {
     public function testConfigurationWithDefaultReceiver()
     {
-        $command = new ConsumeMessagesCommand($this->createMock(ServiceLocator::class), $this->createMock(ServiceLocator::class), null, array('amqp'));
+        $command = new ConsumeMessagesCommand($this->createMock(ServiceLocator::class), $this->createMock(ServiceLocator::class), null, ['amqp']);
         $inputArgument = $command->getDefinition()->getArgument('receiver');
         $this->assertFalse($inputArgument->isRequired());
         $this->assertSame('amqp', $inputArgument->getDefault());
@@ -27,7 +27,7 @@ public function testConfigurationWithDefaultReceiver()
 
     public function testConfigurationWithoutDefaultReceiver()
     {
-        $command = new ConsumeMessagesCommand($this->createMock(ServiceLocator::class), $this->createMock(ServiceLocator::class), null, array('amqp', 'dummy'));
+        $command = new ConsumeMessagesCommand($this->createMock(ServiceLocator::class), $this->createMock(ServiceLocator::class), null, ['amqp', 'dummy']);
         $inputArgument = $command->getDefinition()->getArgument('receiver');
         $this->assertTrue($inputArgument->isRequired());
         $this->assertNull($inputArgument->getDefault());
diff --git a/src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php b/src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php
index f88743aea202..6c97608c9f4f 100644
--- a/src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php
+++ b/src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php
@@ -52,7 +52,7 @@ public function testProcess()
         ;
         $container
             ->register(MissingArgumentTypeHandler::class, MissingArgumentTypeHandler::class)
-            ->addTag('messenger.message_handler', array('handles' => SecondMessage::class))
+            ->addTag('messenger.message_handler', ['handles' => SecondMessage::class])
         ;
         $container
             ->register(DummyReceiver::class, DummyReceiver::class)
@@ -66,15 +66,15 @@ public function testProcess()
         $handlersLocatorDefinition = $container->getDefinition($busId.'.messenger.handlers_locator');
         $this->assertSame(HandlersLocator::class, $handlersLocatorDefinition->getClass());
         $this->assertEquals(
-            array(
-                DummyMessage::class => new IteratorArgument(array(new Reference(DummyHandler::class))),
-                SecondMessage::class => new IteratorArgument(array(new Reference(MissingArgumentTypeHandler::class))),
-            ),
+            [
+                DummyMessage::class => new IteratorArgument([new Reference(DummyHandler::class)]),
+                SecondMessage::class => new IteratorArgument([new Reference(MissingArgumentTypeHandler::class)]),
+            ],
             $handlersLocatorDefinition->getArgument(0)
         );
 
         $this->assertEquals(
-            array(DummyReceiver::class => new Reference(DummyReceiver::class)),
+            [DummyReceiver::class => new Reference(DummyReceiver::class)],
             $container->getDefinition('messenger.receiver_locator')->getArgument(0)
         );
     }
@@ -82,22 +82,22 @@ public function testProcess()
     public function testProcessHandlersByBus()
     {
         $container = $this->getContainerBuilder($commandBusId = 'command_bus');
-        $container->register($queryBusId = 'query_bus', MessageBusInterface::class)->setArgument(0, array())->addTag('messenger.bus');
+        $container->register($queryBusId = 'query_bus', MessageBusInterface::class)->setArgument(0, [])->addTag('messenger.bus');
         $container->register('messenger.middleware.handle_message', HandleMessageMiddleware::class)
             ->addArgument(null)
             ->setAbstract(true)
         ;
 
-        $middlewareHandlers = array(array('id' => 'handle_message'));
+        $middlewareHandlers = [['id' => 'handle_message']];
 
         $container->setParameter($commandBusId.'.middleware', $middlewareHandlers);
         $container->setParameter($queryBusId.'.middleware', $middlewareHandlers);
 
-        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', array('bus' => $commandBusId));
-        $container->register(DummyQueryHandler::class)->addTag('messenger.message_handler', array('bus' => $queryBusId));
+        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', ['bus' => $commandBusId]);
+        $container->register(DummyQueryHandler::class)->addTag('messenger.message_handler', ['bus' => $queryBusId]);
         $container->register(MultipleBusesMessageHandler::class)
-            ->addTag('messenger.message_handler', array('bus' => $commandBusId))
-            ->addTag('messenger.message_handler', array('bus' => $queryBusId))
+            ->addTag('messenger.message_handler', ['bus' => $commandBusId])
+            ->addTag('messenger.message_handler', ['bus' => $queryBusId])
         ;
 
         (new ResolveClassPass())->process($container);
@@ -106,20 +106,20 @@ public function testProcessHandlersByBus()
         $commandBusHandlersLocatorDefinition = $container->getDefinition($commandBusId.'.messenger.handlers_locator');
         $this->assertSame(HandlersLocator::class, $commandBusHandlersLocatorDefinition->getClass());
         $this->assertEquals(
-            array(
-                MultipleBusesMessage::class => new IteratorArgument(array(new Reference(MultipleBusesMessageHandler::class))),
-                DummyCommand::class => new IteratorArgument(array(new Reference(DummyCommandHandler::class))),
-            ),
+            [
+                MultipleBusesMessage::class => new IteratorArgument([new Reference(MultipleBusesMessageHandler::class)]),
+                DummyCommand::class => new IteratorArgument([new Reference(DummyCommandHandler::class)]),
+            ],
             $commandBusHandlersLocatorDefinition->getArgument(0)
         );
 
         $queryBusHandlersLocatorDefinition = $container->getDefinition($queryBusId.'.messenger.handlers_locator');
         $this->assertSame(HandlersLocator::class, $queryBusHandlersLocatorDefinition->getClass());
         $this->assertEquals(
-            array(
-                DummyQuery::class => new IteratorArgument(array(new Reference(DummyQueryHandler::class))),
-                MultipleBusesMessage::class => new IteratorArgument(array(new Reference(MultipleBusesMessageHandler::class))),
-            ),
+            [
+                DummyQuery::class => new IteratorArgument([new Reference(DummyQueryHandler::class)]),
+                MultipleBusesMessage::class => new IteratorArgument([new Reference(MultipleBusesMessageHandler::class)]),
+            ],
             $queryBusHandlersLocatorDefinition->getArgument(0)
         );
     }
@@ -132,7 +132,7 @@ public function testProcessTagWithUnknownBus()
     {
         $container = $this->getContainerBuilder($commandBusId = 'command_bus');
 
-        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', array('bus' => 'unknown_bus'));
+        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', ['bus' => 'unknown_bus']);
 
         (new ResolveClassPass())->process($container);
         (new MessengerPass())->process($container);
@@ -155,10 +155,10 @@ public function testGetClassesFromTheHandlerSubscriberInterface()
         $handlersMapping = $container->getDefinition($busId.'.messenger.handlers_locator')->getArgument(0);
 
         $this->assertArrayHasKey(DummyMessage::class, $handlersMapping);
-        $this->assertEquals(new IteratorArgument(array(new Reference(HandlerWithMultipleMessages::class))), $handlersMapping[DummyMessage::class]);
+        $this->assertEquals(new IteratorArgument([new Reference(HandlerWithMultipleMessages::class)]), $handlersMapping[DummyMessage::class]);
 
         $this->assertArrayHasKey(SecondMessage::class, $handlersMapping);
-        $this->assertEquals(new IteratorArgument(array(new Reference(PrioritizedHandler::class), new Reference(HandlerWithMultipleMessages::class))), $handlersMapping[SecondMessage::class]);
+        $this->assertEquals(new IteratorArgument([new Reference(PrioritizedHandler::class), new Reference(HandlerWithMultipleMessages::class)]), $handlersMapping[SecondMessage::class]);
     }
 
     public function testGetClassesAndMethodsAndPrioritiesFromTheSubscriber()
@@ -183,8 +183,8 @@ public function testGetClassesAndMethodsAndPrioritiesFromTheSubscriber()
         $dummyHandlerReference = $handlersMapping[DummyMessage::class]->getValues()[0];
         $dummyHandlerDefinition = $container->getDefinition($dummyHandlerReference);
         $this->assertSame('callable', $dummyHandlerDefinition->getClass());
-        $this->assertEquals(array(new Reference(HandlerMappingMethods::class), 'dummyMethod'), $dummyHandlerDefinition->getArgument(0));
-        $this->assertSame(array('Closure', 'fromCallable'), $dummyHandlerDefinition->getFactory());
+        $this->assertEquals([new Reference(HandlerMappingMethods::class), 'dummyMethod'], $dummyHandlerDefinition->getArgument(0));
+        $this->assertSame(['Closure', 'fromCallable'], $dummyHandlerDefinition->getFactory());
 
         $secondHandlerReference = $handlersMapping[SecondMessage::class]->getValues()[1];
         $secondHandlerDefinition = $container->getDefinition($secondHandlerReference);
@@ -227,11 +227,11 @@ public function testItRegistersReceivers()
     {
         $container = $this->getContainerBuilder();
         $container->register('message_bus', MessageBusInterface::class)->addTag('messenger.bus');
-        $container->register(AmqpReceiver::class, AmqpReceiver::class)->addTag('messenger.receiver', array('alias' => 'amqp'));
+        $container->register(AmqpReceiver::class, AmqpReceiver::class)->addTag('messenger.receiver', ['alias' => 'amqp']);
 
         (new MessengerPass())->process($container);
 
-        $this->assertEquals(array('amqp' => new Reference(AmqpReceiver::class), AmqpReceiver::class => new Reference(AmqpReceiver::class)), $container->getDefinition('messenger.receiver_locator')->getArgument(0));
+        $this->assertEquals(['amqp' => new Reference(AmqpReceiver::class), AmqpReceiver::class => new Reference(AmqpReceiver::class)], $container->getDefinition('messenger.receiver_locator')->getArgument(0));
     }
 
     public function testItRegistersReceiversWithoutTagName()
@@ -242,27 +242,27 @@ public function testItRegistersReceiversWithoutTagName()
 
         (new MessengerPass())->process($container);
 
-        $this->assertEquals(array(AmqpReceiver::class => new Reference(AmqpReceiver::class)), $container->getDefinition('messenger.receiver_locator')->getArgument(0));
+        $this->assertEquals([AmqpReceiver::class => new Reference(AmqpReceiver::class)], $container->getDefinition('messenger.receiver_locator')->getArgument(0));
     }
 
     public function testItRegistersMultipleReceiversAndSetsTheReceiverNamesOnTheCommand()
     {
         $container = $this->getContainerBuilder();
-        $container->register('console.command.messenger_consume_messages', ConsumeMessagesCommand::class)->setArguments(array(
+        $container->register('console.command.messenger_consume_messages', ConsumeMessagesCommand::class)->setArguments([
             null,
             new Reference('messenger.receiver_locator'),
             null,
             null,
             null,
-        ));
+        ]);
 
-        $container->register(AmqpReceiver::class, AmqpReceiver::class)->addTag('messenger.receiver', array('alias' => 'amqp'));
-        $container->register(DummyReceiver::class, DummyReceiver::class)->addTag('messenger.receiver', array('alias' => 'dummy'));
+        $container->register(AmqpReceiver::class, AmqpReceiver::class)->addTag('messenger.receiver', ['alias' => 'amqp']);
+        $container->register(DummyReceiver::class, DummyReceiver::class)->addTag('messenger.receiver', ['alias' => 'dummy']);
 
         (new MessengerPass())->process($container);
 
-        $this->assertSame(array('amqp', 'dummy'), $container->getDefinition('console.command.messenger_consume_messages')->getArgument(3));
-        $this->assertSame(array('message_bus'), $container->getDefinition('console.command.messenger_consume_messages')->getArgument(4));
+        $this->assertSame(['amqp', 'dummy'], $container->getDefinition('console.command.messenger_consume_messages')->getArgument(3));
+        $this->assertSame(['message_bus'], $container->getDefinition('console.command.messenger_consume_messages')->getArgument(4));
     }
 
     public function testItShouldNotThrowIfGeneratorIsReturnedInsteadOfArray()
@@ -279,17 +279,17 @@ public function testItShouldNotThrowIfGeneratorIsReturnedInsteadOfArray()
 
         $this->assertArrayHasKey(DummyMessage::class, $handlersMapping);
         $firstReference = $handlersMapping[DummyMessage::class]->getValues()[0];
-        $this->assertEquals(array(new Reference(HandlerWithGenerators::class), 'dummyMethod'), $container->getDefinition($firstReference)->getArgument(0));
+        $this->assertEquals([new Reference(HandlerWithGenerators::class), 'dummyMethod'], $container->getDefinition($firstReference)->getArgument(0));
 
         $this->assertArrayHasKey(SecondMessage::class, $handlersMapping);
         $secondReference = $handlersMapping[SecondMessage::class]->getValues()[0];
-        $this->assertEquals(array(new Reference(HandlerWithGenerators::class), 'secondMessage'), $container->getDefinition($secondReference)->getArgument(0));
+        $this->assertEquals([new Reference(HandlerWithGenerators::class), 'secondMessage'], $container->getDefinition($secondReference)->getArgument(0));
     }
 
     public function testItRegistersHandlersOnDifferentBuses()
     {
         $container = $this->getContainerBuilder($eventsBusId = 'event_bus');
-        $container->register($commandsBusId = 'command_bus', MessageBusInterface::class)->addTag('messenger.bus')->setArgument(0, array());
+        $container->register($commandsBusId = 'command_bus', MessageBusInterface::class)->addTag('messenger.bus')->setArgument(0, []);
 
         $container
             ->register(HandlerOnSpecificBuses::class, HandlerOnSpecificBuses::class)
@@ -300,15 +300,15 @@ public function testItRegistersHandlersOnDifferentBuses()
 
         $eventsHandlerMapping = $container->getDefinition($eventsBusId.'.messenger.handlers_locator')->getArgument(0);
 
-        $this->assertEquals(array(DummyMessage::class), array_keys($eventsHandlerMapping));
+        $this->assertEquals([DummyMessage::class], array_keys($eventsHandlerMapping));
         $firstReference = $eventsHandlerMapping[DummyMessage::class]->getValues()[0];
-        $this->assertEquals(array(new Reference(HandlerOnSpecificBuses::class), 'dummyMethodForEvents'), $container->getDefinition($firstReference)->getArgument(0));
+        $this->assertEquals([new Reference(HandlerOnSpecificBuses::class), 'dummyMethodForEvents'], $container->getDefinition($firstReference)->getArgument(0));
 
         $commandsHandlerMapping = $container->getDefinition($commandsBusId.'.messenger.handlers_locator')->getArgument(0);
 
-        $this->assertEquals(array(DummyMessage::class), array_keys($commandsHandlerMapping));
+        $this->assertEquals([DummyMessage::class], array_keys($commandsHandlerMapping));
         $firstReference = $commandsHandlerMapping[DummyMessage::class]->getValues()[0];
-        $this->assertEquals(array(new Reference(HandlerOnSpecificBuses::class), 'dummyMethodForCommands'), $container->getDefinition($firstReference)->getArgument(0));
+        $this->assertEquals([new Reference(HandlerOnSpecificBuses::class), 'dummyMethodForCommands'], $container->getDefinition($firstReference)->getArgument(0));
     }
 
     /**
@@ -457,8 +457,8 @@ public function testRegistersTraceableBusesToCollector()
         (new MessengerPass())->process($container);
 
         $this->assertTrue($container->hasDefinition($debuggedFooBusId = 'debug.traced.'.$fooBusId));
-        $this->assertSame(array($fooBusId, null, 0), $container->getDefinition($debuggedFooBusId)->getDecoratedService());
-        $this->assertEquals(array(array('registerBus', array($fooBusId, new Reference($debuggedFooBusId)))), $container->getDefinition('data_collector.messenger')->getMethodCalls());
+        $this->assertSame([$fooBusId, null, 0], $container->getDefinition($debuggedFooBusId)->getDecoratedService());
+        $this->assertEquals([['registerBus', [$fooBusId, new Reference($debuggedFooBusId)]]], $container->getDefinition('data_collector.messenger')->getMethodCalls());
     }
 
     public function testRegistersMiddlewareFromServices()
@@ -468,34 +468,34 @@ public function testRegistersMiddlewareFromServices()
         $container->register('middleware_with_factory_using_default', UselessMiddleware::class)->addArgument('some_default')->setAbstract(true);
         $container->register(UselessMiddleware::class, UselessMiddleware::class);
 
-        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', array(
-            array('id' => UselessMiddleware::class),
-            array('id' => 'middleware_with_factory', 'arguments' => array('index_0' => 'foo', 'bar')),
-            array('id' => 'middleware_with_factory_using_default'),
-        ));
+        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', [
+            ['id' => UselessMiddleware::class],
+            ['id' => 'middleware_with_factory', 'arguments' => ['index_0' => 'foo', 'bar']],
+            ['id' => 'middleware_with_factory_using_default'],
+        ]);
 
         (new MessengerPass())->process($container);
         (new ResolveChildDefinitionsPass())->process($container);
 
         $this->assertTrue($container->hasDefinition($factoryChildMiddlewareId = $fooBusId.'.middleware.middleware_with_factory'));
         $this->assertEquals(
-            array('foo', 'bar'),
+            ['foo', 'bar'],
             $container->getDefinition($factoryChildMiddlewareId)->getArguments(),
             'parent default argument is overridden, and next ones appended'
         );
 
         $this->assertTrue($container->hasDefinition($factoryWithDefaultChildMiddlewareId = $fooBusId.'.middleware.middleware_with_factory_using_default'));
         $this->assertEquals(
-            array('some_default'),
+            ['some_default'],
             $container->getDefinition($factoryWithDefaultChildMiddlewareId)->getArguments(),
             'parent default argument is used'
         );
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             new Reference(UselessMiddleware::class),
             new Reference($factoryChildMiddlewareId),
             new Reference($factoryWithDefaultChildMiddlewareId),
-        ), $container->getDefinition($fooBusId)->getArgument(0)->getValues());
+        ], $container->getDefinition($fooBusId)->getArgument(0)->getValues());
         $this->assertFalse($container->hasParameter($middlewareParameter));
     }
 
@@ -506,9 +506,9 @@ public function testRegistersMiddlewareFromServices()
     public function testCannotRegistersAnUndefinedMiddleware()
     {
         $container = $this->getContainerBuilder($fooBusId = 'messenger.bus.foo');
-        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', array(
-            array('id' => 'not_defined_middleware', 'arguments' => array()),
-        ));
+        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', [
+            ['id' => 'not_defined_middleware', 'arguments' => []],
+        ]);
 
         (new MessengerPass())->process($container);
     }
@@ -521,9 +521,9 @@ public function testMiddlewareFactoryDefinitionMustBeAbstract()
     {
         $container = $this->getContainerBuilder($fooBusId = 'messenger.bus.foo');
         $container->register('not_an_abstract_definition', UselessMiddleware::class);
-        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', array(
-            array('id' => 'not_an_abstract_definition', 'arguments' => array('foo')),
-        ));
+        $container->setParameter($middlewareParameter = $fooBusId.'.middleware', [
+            ['id' => 'not_an_abstract_definition', 'arguments' => ['foo']],
+        ]);
 
         (new MessengerPass())->process($container);
     }
@@ -531,41 +531,41 @@ public function testMiddlewareFactoryDefinitionMustBeAbstract()
     public function testItRegistersTheDebugCommand()
     {
         $container = $this->getContainerBuilder($commandBusId = 'command_bus');
-        $container->register($queryBusId = 'query_bus', MessageBusInterface::class)->setArgument(0, array())->addTag('messenger.bus');
-        $container->register($emptyBus = 'empty_bus', MessageBusInterface::class)->setArgument(0, array())->addTag('messenger.bus');
+        $container->register($queryBusId = 'query_bus', MessageBusInterface::class)->setArgument(0, [])->addTag('messenger.bus');
+        $container->register($emptyBus = 'empty_bus', MessageBusInterface::class)->setArgument(0, [])->addTag('messenger.bus');
         $container->register('messenger.middleware.handle_message', HandleMessageMiddleware::class)
             ->addArgument(null)
             ->setAbstract(true)
         ;
 
-        $container->register('console.command.messenger_debug', DebugCommand::class)->addArgument(array());
+        $container->register('console.command.messenger_debug', DebugCommand::class)->addArgument([]);
 
-        $middlewareHandlers = array(array('id' => 'handle_message'));
+        $middlewareHandlers = [['id' => 'handle_message']];
 
         $container->setParameter($commandBusId.'.middleware', $middlewareHandlers);
         $container->setParameter($queryBusId.'.middleware', $middlewareHandlers);
 
-        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', array('bus' => $commandBusId));
-        $container->register(DummyQueryHandler::class)->addTag('messenger.message_handler', array('bus' => $queryBusId));
+        $container->register(DummyCommandHandler::class)->addTag('messenger.message_handler', ['bus' => $commandBusId]);
+        $container->register(DummyQueryHandler::class)->addTag('messenger.message_handler', ['bus' => $queryBusId]);
         $container->register(MultipleBusesMessageHandler::class)
-            ->addTag('messenger.message_handler', array('bus' => $commandBusId))
-            ->addTag('messenger.message_handler', array('bus' => $queryBusId))
+            ->addTag('messenger.message_handler', ['bus' => $commandBusId])
+            ->addTag('messenger.message_handler', ['bus' => $queryBusId])
         ;
 
         (new ResolveClassPass())->process($container);
         (new MessengerPass())->process($container);
 
-        $this->assertEquals(array(
-            $commandBusId => array(
-                DummyCommand::class => array(DummyCommandHandler::class),
-                MultipleBusesMessage::class => array(MultipleBusesMessageHandler::class),
-            ),
-            $queryBusId => array(
-                DummyQuery::class => array(DummyQueryHandler::class),
-                MultipleBusesMessage::class => array(MultipleBusesMessageHandler::class),
-            ),
-            $emptyBus => array(),
-        ), $container->getDefinition('console.command.messenger_debug')->getArgument(0));
+        $this->assertEquals([
+            $commandBusId => [
+                DummyCommand::class => [DummyCommandHandler::class],
+                MultipleBusesMessage::class => [MultipleBusesMessageHandler::class],
+            ],
+            $queryBusId => [
+                DummyQuery::class => [DummyQueryHandler::class],
+                MultipleBusesMessage::class => [MultipleBusesMessageHandler::class],
+            ],
+            $emptyBus => [],
+        ], $container->getDefinition('console.command.messenger_debug')->getArgument(0));
     }
 
     private function getContainerBuilder(string $busId = 'message_bus'): ContainerBuilder
@@ -573,7 +573,7 @@ private function getContainerBuilder(string $busId = 'message_bus'): ContainerBu
         $container = new ContainerBuilder();
         $container->setParameter('kernel.debug', true);
 
-        $container->register($busId, MessageBusInterface::class)->addTag('messenger.bus')->setArgument(0, array());
+        $container->register($busId, MessageBusInterface::class)->addTag('messenger.bus')->setArgument(0, []);
         if ('message_bus' !== $busId) {
             $container->setAlias('message_bus', $busId);
         }
@@ -633,7 +633,7 @@ class UndefinedMessageHandlerViaSubscriberInterface implements MessageSubscriber
 {
     public static function getHandledMessages(): iterable
     {
-        return array(UndefinedMessage::class);
+        return [UndefinedMessage::class];
     }
 
     public function __invoke()
@@ -670,10 +670,10 @@ class HandlerWithMultipleMessages implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        return array(
+        return [
             DummyMessage::class,
             SecondMessage::class,
-        );
+        ];
     }
 
     public function __invoke()
@@ -685,7 +685,7 @@ class PrioritizedHandler implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        yield SecondMessage::class => array('priority' => 10);
+        yield SecondMessage::class => ['priority' => 10];
     }
 
     public function __invoke()
@@ -698,7 +698,7 @@ class HandlerMappingMethods implements MessageSubscriberInterface
     public static function getHandledMessages(): iterable
     {
         yield DummyMessage::class => 'dummyMethod';
-        yield SecondMessage::class => array('method' => 'secondMessage', 'priority' => 20);
+        yield SecondMessage::class => ['method' => 'secondMessage', 'priority' => 20];
     }
 
     public function dummyMethod()
@@ -714,9 +714,9 @@ class HandlerMappingWithNonExistentMethod implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        return array(
+        return [
             DummyMessage::class => 'dummyMethod',
-        );
+        ];
     }
 }
 
@@ -724,7 +724,7 @@ class HandleNoMessageHandler implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        return array();
+        return [];
     }
 
     public function __invoke()
@@ -753,8 +753,8 @@ class HandlerOnSpecificBuses implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        yield DummyMessage::class => array('method' => 'dummyMethodForEvents', 'bus' => 'event_bus');
-        yield DummyMessage::class => array('method' => 'dummyMethodForCommands', 'bus' => 'command_bus');
+        yield DummyMessage::class => ['method' => 'dummyMethodForEvents', 'bus' => 'event_bus'];
+        yield DummyMessage::class => ['method' => 'dummyMethodForCommands', 'bus' => 'command_bus'];
     }
 
     public function dummyMethodForEvents()
@@ -770,7 +770,7 @@ class HandlerOnUndefinedBus implements MessageSubscriberInterface
 {
     public static function getHandledMessages(): iterable
     {
-        yield DummyMessage::class => array('method' => 'dummyMethodForSomeBus', 'bus' => 'some_undefined_bus');
+        yield DummyMessage::class => ['method' => 'dummyMethodForSomeBus', 'bus' => 'some_undefined_bus'];
     }
 
     public function dummyMethodForSomeBus()
diff --git a/src/Symfony/Component/Messenger/Tests/EnvelopeTest.php b/src/Symfony/Component/Messenger/Tests/EnvelopeTest.php
index 449acd812558..67609d8cd9a7 100644
--- a/src/Symfony/Component/Messenger/Tests/EnvelopeTest.php
+++ b/src/Symfony/Component/Messenger/Tests/EnvelopeTest.php
@@ -52,7 +52,7 @@ public function testAll()
     {
         $envelope = (new Envelope($dummy = new DummyMessage('dummy')))
             ->with($receivedStamp = new ReceivedStamp())
-            ->with($validationStamp = new ValidationStamp(array('foo')))
+            ->with($validationStamp = new ValidationStamp(['foo']))
         ;
 
         $stamps = $envelope->all();
diff --git a/src/Symfony/Component/Messenger/Tests/Handler/HandlersLocatorTest.php b/src/Symfony/Component/Messenger/Tests/Handler/HandlersLocatorTest.php
index 4b4e84246d80..0c258f395b4c 100644
--- a/src/Symfony/Component/Messenger/Tests/Handler/HandlersLocatorTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Handler/HandlersLocatorTest.php
@@ -20,11 +20,11 @@ class HandlersLocatorTest extends TestCase
 {
     public function testItYieldsProvidedAliasAsKey()
     {
-        $handler = $this->createPartialMock(\stdClass::class, array('__invoke'));
-        $locator = new HandlersLocator(array(
-            DummyMessage::class => array('dummy' => $handler),
-        ));
+        $handler = $this->createPartialMock(\stdClass::class, ['__invoke']);
+        $locator = new HandlersLocator([
+            DummyMessage::class => ['dummy' => $handler],
+        ]);
 
-        $this->assertSame(array('dummy' => $handler), iterator_to_array($locator->getHandlers(new Envelope(new DummyMessage('a')))));
+        $this->assertSame(['dummy' => $handler], iterator_to_array($locator->getHandlers(new Envelope(new DummyMessage('a')))));
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/MessageBusTest.php b/src/Symfony/Component/Messenger/Tests/MessageBusTest.php
index 3dedb59c63db..1d56d1010425 100644
--- a/src/Symfony/Component/Messenger/Tests/MessageBusTest.php
+++ b/src/Symfony/Component/Messenger/Tests/MessageBusTest.php
@@ -58,10 +58,10 @@ public function testItCallsMiddleware()
             ->willReturn($envelope)
         ;
 
-        $bus = new MessageBus(array(
+        $bus = new MessageBus([
             $firstMiddleware,
             $secondMiddleware,
-        ));
+        ]);
 
         $bus->dispatch($message);
     }
@@ -95,11 +95,11 @@ public function testThatAMiddlewareCanAddSomeStampsToTheEnvelope()
             ->willReturn($envelopeWithAnotherStamp)
         ;
 
-        $bus = new MessageBus(array(
+        $bus = new MessageBus([
             $firstMiddleware,
             $secondMiddleware,
             $thirdMiddleware,
-        ));
+        ]);
 
         $bus->dispatch($envelope);
     }
@@ -107,7 +107,7 @@ public function testThatAMiddlewareCanAddSomeStampsToTheEnvelope()
     public function testThatAMiddlewareCanUpdateTheMessageWhileKeepingTheEnvelopeStamps()
     {
         $message = new DummyMessage('Hello');
-        $envelope = new Envelope($message, ...$stamps = array(new ReceivedStamp()));
+        $envelope = new Envelope($message, ...$stamps = [new ReceivedStamp()]);
 
         $changedMessage = new DummyMessage('Changed');
         $expectedEnvelope = new Envelope($changedMessage, ...$stamps);
@@ -127,10 +127,10 @@ public function testThatAMiddlewareCanUpdateTheMessageWhileKeepingTheEnvelopeSta
             ->willReturn($envelope)
         ;
 
-        $bus = new MessageBus(array(
+        $bus = new MessageBus([
             $firstMiddleware,
             $secondMiddleware,
-        ));
+        ]);
 
         $bus->dispatch($envelope);
     }
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/ActivationMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/ActivationMiddlewareTest.php
index dab0a0fb1165..5c28c0de7cd0 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/ActivationMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/ActivationMiddlewareTest.php
@@ -42,7 +42,7 @@ public function testExecuteMiddlewareOnActivatedWithCallable()
         $message = new DummyMessage('Hello');
         $envelope = new Envelope($message);
 
-        $activated = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $activated = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $activated->expects($this->once())->method('__invoke')->with($envelope)->willReturn(true);
 
         $stack = $this->getStackMock(false);
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/HandleMessageMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/HandleMessageMiddlewareTest.php
index 457428c435be..953124fb9b77 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/HandleMessageMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/HandleMessageMiddlewareTest.php
@@ -26,11 +26,11 @@ public function testItCallsTheHandlerAndNextMiddleware()
         $message = new DummyMessage('Hey');
         $envelope = new Envelope($message);
 
-        $handler = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $handler = $this->createPartialMock(\stdClass::class, ['__invoke']);
 
-        $middleware = new HandleMessageMiddleware(new HandlersLocator(array(
-            DummyMessage::class => array($handler),
-        )));
+        $middleware = new HandleMessageMiddleware(new HandlersLocator([
+            DummyMessage::class => [$handler],
+        ]));
 
         $handler->expects($this->once())->method('__invoke')->with($message);
 
@@ -45,9 +45,9 @@ public function testItAddsHandledStamps(array $handlers, array $expectedStamps)
         $message = new DummyMessage('Hey');
         $envelope = new Envelope($message);
 
-        $middleware = new HandleMessageMiddleware(new HandlersLocator(array(
+        $middleware = new HandleMessageMiddleware(new HandlersLocator([
             DummyMessage::class => $handlers,
-        )));
+        ]));
 
         $envelope = $middleware->handle($envelope, $this->getStackMock());
 
@@ -56,34 +56,34 @@ public function testItAddsHandledStamps(array $handlers, array $expectedStamps)
 
     public function itAddsHandledStampsProvider()
     {
-        $first = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $first = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $first->method('__invoke')->willReturn('first result');
         $firstClass = \get_class($first);
 
-        $second = $this->createPartialMock(\stdClass::class, array('__invoke'));
+        $second = $this->createPartialMock(\stdClass::class, ['__invoke']);
         $second->method('__invoke')->willReturn(null);
         $secondClass = \get_class($second);
 
-        yield 'A stamp is added' => array(
-            array($first),
-            array(new HandledStamp('first result', $firstClass.'::__invoke')),
-        );
+        yield 'A stamp is added' => [
+            [$first],
+            [new HandledStamp('first result', $firstClass.'::__invoke')],
+        ];
 
-        yield 'A stamp is added per handler' => array(
-            array($first, $second),
-            array(
+        yield 'A stamp is added per handler' => [
+            [$first, $second],
+            [
                 new HandledStamp('first result', $firstClass.'::__invoke'),
                 new HandledStamp(null, $secondClass.'::__invoke'),
-            ),
-        );
+            ],
+        ];
 
-        yield 'Yielded locator alias is used' => array(
-            array('first_alias' => $first, $second),
-            array(
+        yield 'Yielded locator alias is used' => [
+            ['first_alias' => $first, $second],
+            [
                 new HandledStamp('first result', $firstClass.'::__invoke', 'first_alias'),
                 new HandledStamp(null, $secondClass.'::__invoke'),
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -92,14 +92,14 @@ public function itAddsHandledStampsProvider()
      */
     public function testThrowsNoHandlerException()
     {
-        $middleware = new HandleMessageMiddleware(new HandlersLocator(array()));
+        $middleware = new HandleMessageMiddleware(new HandlersLocator([]));
 
         $middleware->handle(new Envelope(new DummyMessage('Hey')), new StackMiddleware());
     }
 
     public function testAllowNoHandlers()
     {
-        $middleware = new HandleMessageMiddleware(new HandlersLocator(array()), true);
+        $middleware = new HandleMessageMiddleware(new HandlersLocator([]), true);
 
         $this->assertInstanceOf(Envelope::class, $middleware->handle(new Envelope(new DummyMessage('Hey')), new StackMiddleware()));
     }
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/SendMessageMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/SendMessageMiddlewareTest.php
index 572f237b5d2a..e74b18245ef2 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/SendMessageMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/SendMessageMiddlewareTest.php
@@ -30,7 +30,7 @@ public function testItSendsTheMessageToAssignedSender()
         $envelope = new Envelope($message);
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
 
-        $middleware = new SendMessageMiddleware(new SendersLocator(array(DummyMessage::class => array($sender))));
+        $middleware = new SendMessageMiddleware(new SendersLocator([DummyMessage::class => [$sender]]));
 
         $sender->expects($this->once())->method('send')->with($envelope)->willReturn($envelope);
 
@@ -47,7 +47,7 @@ public function testItSendsTheMessageToAssignedSenderWithPreWrappedMessage()
         $envelope = new Envelope(new ChildDummyMessage('Hey'));
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
 
-        $middleware = new SendMessageMiddleware(new SendersLocator(array(DummyMessage::class => array($sender))));
+        $middleware = new SendMessageMiddleware(new SendersLocator([DummyMessage::class => [$sender]]));
 
         $sender->expects($this->once())->method('send')->with($envelope)->willReturn($envelope);
 
@@ -60,9 +60,9 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnTheMessageClass()
         $envelope = new Envelope($message);
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
 
-        $middleware = new SendMessageMiddleware(new SendersLocator(array('*' => array($sender)), array(
+        $middleware = new SendMessageMiddleware(new SendersLocator(['*' => [$sender]], [
             DummyMessage::class => true,
-        )));
+        ]));
 
         $sender->expects($this->once())->method('send')->with($envelope)->willReturn($envelope);
 
@@ -75,9 +75,9 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnTheMessageParentClass()
         $envelope = new Envelope($message);
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
 
-        $middleware = new SendMessageMiddleware(new SendersLocator(array('*' => array($sender)), array(
+        $middleware = new SendMessageMiddleware(new SendersLocator(['*' => [$sender]], [
             DummyMessage::class => true,
-        )));
+        ]));
 
         $sender->expects($this->once())->method('send')->with($envelope)->willReturn($envelope);
 
@@ -90,9 +90,9 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnTheMessageInterface()
         $envelope = new Envelope($message);
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
 
-        $middleware = new SendMessageMiddleware(new SendersLocator(array('*' => array($sender)), array(
+        $middleware = new SendMessageMiddleware(new SendersLocator(['*' => [$sender]], [
             DummyMessageInterface::class => true,
-        )));
+        ]));
 
         $sender->expects($this->once())->method('send')->with($envelope)->willReturn($envelope);
 
@@ -105,9 +105,9 @@ public function testItAlsoCallsTheNextMiddlewareBasedOnWildcard()
         $envelope = new Envelope($message);
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
 
-        $middleware = new SendMessageMiddleware(new SendersLocator(array('*' => array($sender)), array(
+        $middleware = new SendMessageMiddleware(new SendersLocator(['*' => [$sender]], [
             '*' => true,
-        )));
+        ]));
 
         $sender->expects($this->once())->method('send')->with($envelope)->willReturn($envelope);
 
@@ -119,7 +119,7 @@ public function testItCallsTheNextMiddlewareWhenNoSenderForThisMessage()
         $message = new DummyMessage('Hey');
         $envelope = new Envelope($message);
 
-        $middleware = new SendMessageMiddleware(new SendersLocator(array()));
+        $middleware = new SendMessageMiddleware(new SendersLocator([]));
 
         $middleware->handle($envelope, $this->getStackMock());
     }
@@ -130,7 +130,7 @@ public function testItSkipsReceivedMessages()
 
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
 
-        $middleware = new SendMessageMiddleware(new SendersLocator(array('*' => array($sender))));
+        $middleware = new SendMessageMiddleware(new SendersLocator(['*' => [$sender]]));
 
         $sender->expects($this->never())->method('send');
 
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/TraceableMiddlewareTest.php b/src
10000
/Symfony/Component/Messenger/Tests/Middleware/TraceableMiddlewareTest.php
index c13f1c2262ed..35a8ad34f5ca 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/TraceableMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/TraceableMiddlewareTest.php
@@ -44,21 +44,21 @@ public function testHandle()
         $stopwatch->expects($this->exactly(2))
             ->method('start')
             ->withConsecutive(
-                array($this->matches('"%sMiddlewareInterface%s" on "command_bus"'), 'messenger.middleware'),
-                array('Tail on "command_bus"', 'messenger.middleware')
+                [$this->matches('"%sMiddlewareInterface%s" on "command_bus"'), 'messenger.middleware'],
+                ['Tail on "command_bus"', 'messenger.middleware']
             )
         ;
         $stopwatch->expects($this->exactly(2))
             ->method('stop')
             ->withConsecutive(
-                array($this->matches('"%sMiddlewareInterface%s" on "command_bus"')),
-                array('Tail on "command_bus"')
+                [$this->matches('"%sMiddlewareInterface%s" on "command_bus"')],
+                ['Tail on "command_bus"']
             )
         ;
 
         $traced = new TraceableMiddleware($stopwatch, $busId);
 
-        $traced->handle($envelope, new StackMiddleware(new \ArrayIterator(array(null, $middleware))));
+        $traced->handle($envelope, new StackMiddleware(new \ArrayIterator([null, $middleware])));
     }
 
     /**
@@ -88,6 +88,6 @@ public function testHandleWithException()
         ;
 
         $traced = new TraceableMiddleware($stopwatch, $busId);
-        $traced->handle(new Envelope(new DummyMessage('Hello')), new StackMiddleware(new \ArrayIterator(array(null, $middleware))));
+        $traced->handle(new Envelope(new DummyMessage('Hello')), new StackMiddleware(new \ArrayIterator([null, $middleware])));
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Middleware/ValidationMiddlewareTest.php b/src/Symfony/Component/Messenger/Tests/Middleware/ValidationMiddlewareTest.php
index c3c2fff3d1ce..510396f0a37c 100644
--- a/src/Symfony/Component/Messenger/Tests/Middleware/ValidationMiddlewareTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Middleware/ValidationMiddlewareTest.php
@@ -40,7 +40,7 @@ public function testValidateAndNextMiddleware()
     public function testValidateWithStampAndNextMiddleware()
     {
         $message = new DummyMessage('Hey');
-        $envelope = (new Envelope($message))->with(new ValidationStamp($groups = array('Default', 'Extra')));
+        $envelope = (new Envelope($message))->with(new ValidationStamp($groups = ['Default', 'Extra']));
         $validator = $this->createMock(ValidatorInterface::class);
         $validator
             ->expects($this->once())
diff --git a/src/Symfony/Component/Messenger/Tests/Stamp/HandledStampTest.php b/src/Symfony/Component/Messenger/Tests/Stamp/HandledStampTest.php
index 72584c67404b..2bdc7f405093 100644
--- a/src/Symfony/Component/Messenger/Tests/Stamp/HandledStampTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Stamp/HandledStampTest.php
@@ -46,21 +46,21 @@ public function testFromCallable(callable $handler, ?string $expectedHandlerStri
 
     public function provideCallables()
     {
-        yield array(function () {}, 'Closure');
-        yield array('var_dump', 'var_dump');
-        yield array(new DummyCommandHandler(), DummyCommandHandler::class.'::__invoke');
-        yield array(
-            array(new DummyCommandHandlerWithSpecificMethod(), 'handle'),
+        yield [function () {}, 'Closure'];
+        yield ['var_dump', 'var_dump'];
+        yield [new DummyCommandHandler(), DummyCommandHandler::class.'::__invoke'];
+        yield [
+            [new DummyCommandHandlerWithSpecificMethod(), 'handle'],
             DummyCommandHandlerWithSpecificMethod::class.'::handle',
-        );
-        yield array(\Closure::fromCallable(function () {}), 'Closure');
-        yield array(\Closure::fromCallable(new DummyCommandHandler()), DummyCommandHandler::class.'::__invoke');
-        yield array(\Closure::bind(\Closure::fromCallable(function () {}), new \stdClass()), 'Closure');
-        yield array(new class() {
+        ];
+        yield [\Closure::fromCallable(function () {}), 'Closure'];
+        yield [\Closure::fromCallable(new DummyCommandHandler()), DummyCommandHandler::class.'::__invoke'];
+        yield [\Closure::bind(\Closure::fromCallable(function () {}), new \stdClass()), 'Closure'];
+        yield [new class() {
             public function __invoke()
             {
             }
-        }, 'class@anonymous%sHandledStampTest.php%s::__invoke');
+        }, 'class@anonymous%sHandledStampTest.php%s::__invoke'];
     }
 }
 
diff --git a/src/Symfony/Component/Messenger/Tests/Stamp/SerializerStampTest.php b/src/Symfony/Component/Messenger/Tests/Stamp/SerializerStampTest.php
index 1800d92123bf..6a65787803fb 100644
--- a/src/Symfony/Component/Messenger/Tests/Stamp/SerializerStampTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Stamp/SerializerStampTest.php
@@ -22,7 +22,7 @@ class SerializerStampTest extends TestCase
 {
     public function testSerializable()
     {
-        $stamp = new SerializerStamp(array(ObjectNormalizer::GROUPS => array('Default', 'Extra')));
+        $stamp = new SerializerStamp([ObjectNormalizer::GROUPS => ['Default', 'Extra']]);
 
         $this->assertEquals($stamp, unserialize(serialize($stamp)));
     }
diff --git a/src/Symfony/Component/Messenger/Tests/Stamp/ValidationStampTest.php b/src/Symfony/Component/Messenger/Tests/Stamp/ValidationStampTest.php
index cabcf526a383..e5af080acdce 100644
--- a/src/Symfony/Component/Messenger/Tests/Stamp/ValidationStampTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Stamp/ValidationStampTest.php
@@ -22,16 +22,16 @@ class ValidationStampTest extends TestCase
 {
     public function testStamp()
     {
-        $stamp = new ValidationStamp($groups = array('Default', 'Extra'));
+        $stamp = new ValidationStamp($groups = ['Default', 'Extra']);
         $this->assertSame($groups, $stamp->getGroups());
 
-        $stamp = new ValidationStamp($groups = new GroupSequence(array('Default', 'Then')));
+        $stamp = new ValidationStamp($groups = new GroupSequence(['Default', 'Then']));
         $this->assertSame($groups, $stamp->getGroups());
     }
 
     public function testSerializable()
     {
-        $this->assertEquals($stamp = new ValidationStamp(array('Default', 'Extra')), unserialize(serialize($stamp)));
-        $this->assertEquals($stamp = new ValidationStamp(new GroupSequence(array('Default', 'Then'))), unserialize(serialize($stamp)));
+        $this->assertEquals($stamp = new ValidationStamp(['Default', 'Extra']), unserialize(serialize($stamp)));
+        $this->assertEquals($stamp = new ValidationStamp(new GroupSequence(['Default', 'Then'])), unserialize(serialize($stamp)));
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/TraceableMessageBusTest.php b/src/Symfony/Component/Messenger/Tests/TraceableMessageBusTest.php
index f4db01d855b1..23e47d28d0d2 100644
--- a/src/Symfony/Component/Messenger/Tests/TraceableMessageBusTest.php
+++ b/src/Symfony/Component/Messenger/Tests/TraceableMessageBusTest.php
@@ -31,15 +31,15 @@ public function testItTracesDispatch()
         $line = __LINE__ + 1;
         $traceableBus->dispatch($message);
         $this->assertCount(1, $tracedMessages = $traceableBus->getDispatchedMessages());
-        $this->assertArraySubset(array(
+        $this->assertArraySubset([
             'message' => $message,
-            'stamps' => array(),
-            'caller' => array(
+            'stamps' => [],
+            'caller' => [
                 'name' => 'TraceableMessageBusTest.php',
                 'file' => __FILE__,
                 'line' => $line,
-            ),
-        ), $tracedMessages[0], true);
+            ],
+        ], $tracedMessages[0], true);
     }
 
     public function testItTracesDispatchWithEnvelope()
@@ -54,15 +54,15 @@ public function testItTracesDispatchWithEnvelope()
         $line = __LINE__ + 1;
         $traceableBus->dispatch($envelope);
         $this->assertCount(1, $tracedMessages = $traceableBus->getDispatchedMessages());
-        $this->assertArraySubset(array(
+        $this->assertArraySubset([
             'message' => $message,
-            'stamps' => array(array($stamp)),
-            'caller' => array(
+            'stamps' => [[$stamp]],
+            'caller' => [
                 'name' => 'TraceableMessageBusTest.php',
                 'file' => __FILE__,
                 'line' => $line,
-            ),
-        ), $tracedMessages[0], true);
+            ],
+        ], $tracedMessages[0], true);
     }
 
     public function testItTracesExceptions()
@@ -82,15 +82,15 @@ public function testItTracesExceptions()
         }
 
         $this->assertCount(1, $tracedMessages = $traceableBus->getDispatchedMessages());
-        $this->assertArraySubset(array(
+        $this->assertArraySubset([
             'message' => $message,
             'exception' => $exception,
-            'stamps' => array(),
-            'caller' => array(
+            'stamps' => [],
+            'caller' => [
                 'name' => 'TraceableMessageBusTest.php',
                 'file' => __FILE__,
                 'line' => $line,
-            ),
-        ), $tracedMessages[0], true);
+            ],
+        ], $tracedMessages[0], true);
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpSenderTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpSenderTest.php
index 398f0092922c..caef14c9e2b1 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpSenderTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpSenderTest.php
@@ -26,7 +26,7 @@ class AmqpSenderTest extends TestCase
     public function testItSendsTheEncodedMessage()
     {
         $envelope = new Envelope(new DummyMessage('Oy'));
-        $encoded = array('body' => '...', 'headers' => array('type' => DummyMessage::class));
+        $encoded = ['body' => '...', 'headers' => ['type' => DummyMessage::class]];
 
         $serializer = $this->getMockBuilder(SerializerInterface::class)->getMock();
         $serializer->method('encode')->with($envelope)->willReturnOnConsecutiveCalls($encoded);
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportFactoryTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportFactoryTest.php
index c36cc3eafd4c..8dc555fa8978 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportFactoryTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportFactoryTest.php
@@ -26,9 +26,9 @@ public function testSupportsOnlyAmqpTransports()
             true
         );
 
-        $this->assertTrue($factory->supports('amqp://localhost', array()));
-        $this->assertFalse($factory->supports('sqs://localhost', array()));
-        $this->assertFalse($factory->supports('invalid-dsn', array()));
+        $this->assertTrue($factory->supports('amqp://localhost', []));
+        $this->assertFalse($factory->supports('sqs://localhost', []));
+        $this->assertFalse($factory->supports('invalid-dsn', []));
     }
 
     public function testItCreatesTheTransport()
@@ -38,8 +38,8 @@ public function testItCreatesTheTransport()
             true
         );
 
-        $expectedTransport = new AmqpTransport(Connection::fromDsn('amqp://localhost', array('foo' => 'bar'), true), $serializer);
+        $expectedTransport = new AmqpTransport(Connection::fromDsn('amqp://localhost', ['foo' => 'bar'], true), $serializer);
 
-        $this->assertEquals($expectedTransport, $factory->createTransport('amqp://localhost', array('foo' => 'bar')));
+        $this->assertEquals($expectedTransport, $factory->createTransport('amqp://localhost', ['foo' => 'bar']));
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportTest.php
index 589a764c1a5c..c343c2922636 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/AmqpTransportTest.php
@@ -42,9 +42,9 @@ public function testReceivesMessages()
 
         $amqpEnvelope = $this->getMockBuilder(\AMQPEnvelope::class)->getMock();
         $amqpEnvelope->method('getBody')->willReturn('body');
-        $amqpEnvelope->method('getHeaders')->willReturn(array('my' => 'header'));
+        $amqpEnvelope->method('getHeaders')->willReturn(['my' => 'header']);
 
-        $serializer->method('decode')->with(array('body' => 'body', 'headers' => array('my' => 'header')))->willReturn(new Envelope($decodedMessage));
+        $serializer->method('decode')->with(['body' => 'body', 'headers' => ['my' => 'header']])->willReturn(new Envelope($decodedMessage));
         $connection->method('get')->willReturn($amqpEnvelope);
 
         $transport->receive(function (Envelope $envelope) use ($transport, $decodedMessage) {
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/Sender/SendersLocatorTest.php b/src/Symfony/Component/Messenger/Tests/Transport/Sender/SendersLocatorTest.php
index e693cee53a70..1de28332b388 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/Sender/SendersLocatorTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/Sender/SendersLocatorTest.php
@@ -23,21 +23,21 @@ class SendersLocatorTest extends TestCase
     public function testItReturnsTheSenderBasedOnTheMessageClass()
     {
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $locator = new SendersLocator(array(
-            DummyMessage::class => array($sender),
-        ));
+        $locator = new SendersLocator([
+            DummyMessage::class => [$sender],
+        ]);
 
-        $this->assertSame(array($sender), iterator_to_array($locator->getSenders(new Envelope(new DummyMessage('a')))));
-        $this->assertSame(array(), iterator_to_array($locator->getSenders(new Envelope(new SecondMessage()))));
+        $this->assertSame([$sender], iterator_to_array($locator->getSenders(new Envelope(new DummyMessage('a')))));
+        $this->assertSame([], iterator_to_array($locator->getSenders(new Envelope(new SecondMessage()))));
     }
 
     public function testItYieldsProvidedSenderAliasAsKey()
     {
         $sender = $this->getMockBuilder(SenderInterface::class)->getMock();
-        $locator = new SendersLocator(array(
-            DummyMessage::class => array('dummy' => $sender),
-        ));
+        $locator = new SendersLocator([
+            DummyMessage::class => ['dummy' => $sender],
+        ]);
 
-        $this->assertSame(array('dummy' => $sender), iterator_to_array($locator->getSenders(new Envelope(new DummyMessage('a')))));
+        $this->assertSame(['dummy' => $sender], iterator_to_array($locator->getSenders(new Envelope(new DummyMessage('a')))));
     }
 }
diff --git a/src/Symfony/Component/Messenger/Tests/Transport/Serialization/SerializerTest.php b/src/Symfony/Component/Messenger/Tests/Transport/Serialization/SerializerTest.php
index a38d8b4842ca..d68103f7ca68 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/Serialization/SerializerTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/Serialization/SerializerTest.php
@@ -36,8 +36,8 @@ public function testEncodedWithStampsIsDecodable()
         $serializer = new Serializer();
 
         $envelope = (new Envelope(new DummyMessage('Hello')))
-            ->with(new SerializerStamp(array(ObjectNormalizer::GROUPS => array('foo'))))
-            ->with(new ValidationStamp(array('foo', 'bar')))
+            ->with(new SerializerStamp([ObjectNormalizer::GROUPS => ['foo']]))
+            ->with(new ValidationStamp(['foo', 'bar']))
         ;
 
         $this->assertEquals($envelope, $serializer->decode($serializer->encode($envelope)));
@@ -60,10 +60,10 @@ public function testUsesTheCustomFormatAndContext()
         $message = new DummyMessage('Foo');
 
         $serializer = $this->getMockBuilder(SerializerComponent\SerializerInterface::class)->getMock();
-        $serializer->expects($this->once())->method('serialize')->with($message, 'csv', array('foo' => 'bar'))->willReturn('Yay');
-        $serializer->expects($this->once())->method('deserialize')->with('Yay', DummyMessage::class, 'csv', array('foo' => 'bar'))->willReturn($message);
+        $serializer->expects($this->once())->method('serialize')->with($message, 'csv', ['foo' => 'bar'])->willReturn('Yay');
+        $serializer->expects($this->once())->method('deserialize')->with('Yay', DummyMessage::class, 'csv', ['foo' => 'bar'])->willReturn($message);
 
-        $encoder = new Serializer($serializer, 'csv', array('foo' => 'bar'));
+        $encoder = new Serializer($serializer, 'csv', ['foo' => 'bar']);
 
         $encoded = $encoder->encode(new Envelope($message));
         $decoded = $encoder->decode($encoded);
@@ -77,8 +77,8 @@ public function testEncodedWithSymfonySerializerForStamps()
         $serializer = new Serializer();
 
         $envelope = (new Envelope(new DummyMessage('Hello')))
-            ->with($serializerStamp = new SerializerStamp(array(ObjectNormalizer::GROUPS => array('foo'))))
-            ->with($validationStamp = new ValidationStamp(array('foo', 'bar')))
+            ->with($serializerStamp = new SerializerStamp([ObjectNormalizer::GROUPS => ['foo']]))
+            ->with($validationStamp = new ValidationStamp(['foo', 'bar']))
         ;
 
         $encoded = $serializer->encode($envelope);
diff --git a/src/Symfony/Component/Messenger/TraceableMessageBus.php b/src/Symfony/Component/Messenger/TraceableMessageBus.php
index fdc6ae08f74d..1d910d4540a1 100644
--- a/src/Symfony/Component/Messenger/TraceableMessageBus.php
+++ b/src/Symfony/Component/Messenger/TraceableMessageBus.php
@@ -19,7 +19,7 @@
 class TraceableMessageBus implements MessageBusInterface
 {
     private $decoratedBus;
-    private $dispatchedMessages = array();
+    private $dispatchedMessages = [];
 
     public function __construct(MessageBusInterface $decoratedBus)
     {
@@ -32,12 +32,12 @@ public function __construct(MessageBusInterface $decoratedBus)
     public function dispatch($message): Envelope
     {
         $envelope = $message instanceof Envelope ? $message : new Envelope($message);
-        $context = array(
+        $context = [
             'stamps' => array_values($envelope->all()),
             'message' => $envelope->getMessage(),
             'caller' => $this->getCaller(),
             'callTime' => microtime(true),
-        );
+        ];
 
         try {
             return $this->decoratedBus->dispatch($message);
@@ -57,7 +57,7 @@ public function getDispatchedMessages(): array
 
     public function reset()
     {
-        $this->dispatchedMessages = array();
+        $this->dispatchedMessages = [];
     }
 
     private function getCaller(): array
diff --git a/src/Symfony/Component/Messenger/Transport/AmqpExt/AmqpReceiver.php b/src/Symfony/Component/Messenger/Transport/AmqpExt/AmqpReceiver.php
index ad02b80d3b4c..7ed1fae40581 100644
--- a/src/Symfony/Component/Messenger/Transport/AmqpExt/AmqpReceiver.php
+++ b/src/Symfony/Component/Messenger/Transport/AmqpExt/AmqpReceiver.php
@@ -54,10 +54,10 @@ public function receive(callable $handler): void
             }
 
             try {
-                $handler($this->serializer->decode(array(
+                $handler($this->serializer->decode([
                     'body' => $AMQPEnvelope->getBody(),
                     'headers' => $AMQPEnvelope->getHeaders(),
-                )));
+                ]));
 
                 $this->connection->ack($AMQPEnvelope);
             } catch (RejectMessageExceptionInterface $e) {
diff --git a/src/Symfony/Component/Messenger/Transport/Sender/SendersLocator.php b/src/Symfony/Component/Messenger/Transport/Sender/SendersLocator.php
index 47f64a6d14ff..60dde8fb5344 100644
--- a/src/Symfony/Component/Messenger/Transport/Sender/SendersLocator.php
+++ b/src/Symfony/Component/Messenger/Transport/Sender/SendersLocator.php
@@ -30,7 +30,7 @@ class SendersLocator implements SendersLocatorInterface
      * @param SenderInterface[][] $senders
      * @param bool[]              $sendAndHandle
      */
-    public function __construct(array $senders, array $sendAndHandle = array())
+    public function __construct(array $senders, array $sendAndHandle = [])
     {
         $this->senders = $senders;
         $this->sendAndHandle = $sendAndHandle;
@@ -43,10 +43,10 @@ public function getSenders(Envelope $envelope, ?bool &$handle = false): iterable
     {
         $handle = false;
         $sender = null;
-        $seen = array();
+        $seen = [];
 
         foreach (HandlersLocator::listTypes($envelope) as $type) {
-            foreach ($this->senders[$type] ?? array() as $alias => $sender) {
+            foreach ($this->senders[$type] ?? [] as $alias => $sender) {
                 if (!\in_array($sender, $seen, true)) {
                     yield $alias => $seen[] = $sender;
                 }
diff --git a/src/Symfony/Component/Messenger/Transport/Serialization/Serializer.php b/src/Symfony/Component/Messenger/Transport/Serialization/Serializer.php
index 22c01debea0a..3f0979bcef1d 100644
--- a/src/Symfony/Component/Messenger/Transport/Serialization/Serializer.php
+++ b/src/Symfony/Component/Messenger/Transport/Serialization/Serializer.php
@@ -35,7 +35,7 @@ class Serializer implements SerializerInterface
     private $format;
     private $context;
 
-    public function __construct(SymfonySerializerInterface $serializer = null, string $format = 'json', array $context = array())
+    public function __construct(SymfonySerializerInterface $serializer = null, string $format = 'json', array $context = [])
     {
         $this->serializer = $serializer ?? self::create()->serializer;
         $this->format = $format;
@@ -48,8 +48,8 @@ public static function create(): self
             throw new LogicException(sprintf('The default Messenger Serializer requires Symfony\'s Serializer component. Try running "composer require symfony/serializer".'));
         }
 
-        $encoders = array(new XmlEncoder(), new JsonEncoder());
-        $normalizers = array(new ArrayDenormalizer(), new ObjectNormalizer());
+        $encoders = [new XmlEncoder(), new JsonEncoder()];
+        $normalizers = [new ArrayDenormalizer(), new ObjectNormalizer()];
         $serializer = new SymfonySerializer($normalizers, $encoders);
 
         return new self($serializer);
@@ -91,17 +91,17 @@ public function encode(Envelope $envelope): array
             $context = $serializerStamp->getContext() + $context;
         }
 
-        $headers = array('type' => \get_class($envelope->getMessage())) + $this->encodeStamps($envelope);
+        $headers = ['type' => \get_class($envelope->getMessage())] + $this->encodeStamps($envelope);
 
-        return array(
+        return [
             'body' => $this->serializer->serialize($envelope->getMessage(), $this->format, $context),
             'headers' => $headers,
-        );
+        ];
     }
 
     private function decodeStamps(array $encodedEnvelope): array
     {
-        $stamps = array();
+        $stamps = [];
         foreach ($encodedEnvelope['headers'] as $name => $value) {
             if (0 !== strpos($name, self::STAMP_HEADER_PREFIX)) {
                 continue;
@@ -119,10 +119,10 @@ private function decodeStamps(array $encodedEnvelope): array
     private function encodeStamps(Envelope $envelope): array
     {
         if (!$allStamps = $envelope->all()) {
-            return array();
+            return [];
         }
 
-        $headers = array();
+        $headers = [];
         foreach ($allStamps as $class => $stamps) {
             $headers[self::STAMP_HEADER_PREFIX.$class] = $this->serializer->serialize($stamps, $this->format, $this->context);
         }
diff --git a/src/Symfony/Component/OptionsResolver/OptionsResolver.php b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
index 5d238f509e9b..c0823e3f385b 100644
--- a/src/Symfony/Component/OptionsResolver/OptionsResolver.php
+++ b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
@@ -30,68 +30,68 @@ class OptionsResolver implements Options
     /**
      * The names of all defined options.
      */
-    private $defined = array();
+    private $defined = [];
 
     /**
      * The default option values.
      */
-    private $defaults = array();
+    private $defaults = [];
 
     /**
      * A list of closure for nested options.
      *
      * @var \Closure[][]
      */
-    private $nested = array();
+    private $nested = [];
 
     /**
      * The names of required options.
      */
-    private $required = array();
+    private $required = [];
 
     /**
      * The resolved option values.
      */
-    private $resolved = array();
+    private $resolved = [];
 
     /**
      * A list of normalizer closures.
      *
      * @var \Closure[]
      */
-    private $normalizers = array();
+    private $normalizers = [];
 
     /**
      * A list of accepted values for each option.
      */
-    private $allowedValues = array();
+    private $allowedValues = [];
 
     /**
      * A list of accepted types for each option.
      */
-    private $allowedTypes = array();
+    private $allowedTypes = [];
 
     /**
      * A list of closures for evaluating lazy options.
      */
-    private $lazy = array();
+    private $lazy = [];
 
     /**
      * A list of lazy options whose closure is currently being called.
      *
      * This list helps detecting circular dependencies between lazy options.
      */
-    private $calling = array();
+    private $calling = [];
 
     /**
      * A list of deprecated options.
      */
-    private $deprecated = array();
+    private $deprecated = [];
 
     /**
      * The list of options provided by the user.
      */
-    private $given = array();
+    private $given = [];
 
     /**
      * Whether the instance is locked for reading.
@@ -103,11 +103,11 @@ class OptionsResolver implements Options
      */
     private $locked = false;
 
-    private static $typeAliases = array(
+    private static $typeAliases = [
         'boolean' => 'bool',
         'integer' => 'int',
         'double' => 'float',
-    );
+    ];
 
     /**
      * Sets the default value of a given option.
@@ -186,7 +186,7 @@ public function setDefault($option, $value)
 
                 // Ignore previous lazy options if the closure has no second parameter
                 if (!isset($this->lazy[$option]) || !isset($params[1])) {
-                    $this->lazy[$option] = array();
+                    $this->lazy[$option] = [];
                 }
 
                 // Store closure for later evaluation
@@ -202,7 +202,7 @@ public function setDefault($option, $value)
             if (isset($params[0]) && null !== ($class = $params[0]->getClass()) && self::class === $class->name && (!isset($params[1]) || (null !== ($class = $params[1]->getClass()) && Options::class === $class->name))) {
                 // Store closure for later evaluation
                 $this->nested[$option][] = $value;
-                $this->defaults[$option] = array();
+                $this->defaults[$option] = [];
                 $this->defined[$option] = true;
 
                 // Make sure the option is processed and is not lazy anymore
@@ -523,7 +523,7 @@ public function setAllowedValues($option, $allowedValues)
             throw new UndefinedOptionsException(sprintf('The option "%s" does not exist. Defined options are: "%s".', $option, implode('", "', array_keys($this->defined))));
         }
 
-        $this->allowedValues[$option] = \is_array($allowedValues) ? $allowedValues : array($allowedValues);
+        $this->allowedValues[$option] = \is_array($allowedValues) ? $allowedValues : [$allowedValues];
 
         // Make sure the option is processed
         unset($this->resolved[$option]);
@@ -565,7 +565,7 @@ public function addAllowedValues($option, $allowedValues)
         }
 
         if (!\is_array($allowedValues)) {
-            $allowedValues = array($allowedValues);
+            $allowedValues = [$allowedValues];
         }
 
         if (!isset($this->allowedValues[$option])) {
@@ -690,16 +690,16 @@ public function clear()
             throw new AccessException('Options cannot be cleared from a lazy option or normalizer.');
         }
 
-        $this->defined = array();
-        $this->defaults = array();
-        $this->nested = array();
-        $this->required = array();
-        $this->resolved = array();
-        $this->lazy = array();
-        $this->normalizers = array();
-        $this->allowedTypes = array();
-        $this->allowedValues = array();
-        $this->deprecated = array();
+        $this->defined = [];
+        $this->defaults = [];
+        $this->nested = [];
+        $this->required = [];
+        $this->resolved = [];
+        $this->lazy = [];
+        $this->normalizers = [];
+        $this->allowedTypes = [];
+        $this->allowedValues = [];
+        $this->deprecated = [];
 
         return $this;
     }
@@ -728,7 +728,7 @@ public function clear()
      * @throws NoSuchOptionException     If a lazy option reads an unavailable option
      * @throws AccessException           If called from a lazy option or normalizer
      */
-    public function resolve(array $options = array())
+    public function resolve(array $options = [])
     {
         if ($this->locked) {
             throw new AccessException('Options cannot be resolved from a lazy option or normalizer.');
@@ -802,7 +802,7 @@ public function offsetGet($option/*, bool $triggerDeprecation = true*/)
         // Shortcut for resolved options
         if (isset($this->resolved[$option]) || array_key_exists($option, $this->resolved)) {
             if ($triggerDeprecation && isset($this->deprecated[$option]) && (isset($this->given[$option]) || $this->calling) && \is_string($this->deprecated[$option])) {
-                @trigger_error(strtr($this->deprecated[$option], array('%name%' => $option)), E_USER_DEPRECATED);
+                @trigger_error(strtr($this->deprecated[$option], ['%name%' => $option]), E_USER_DEPRECATED);
             }
 
             return $this->resolved[$option];
@@ -869,7 +869,7 @@ public function offsetGet($option/*, bool $triggerDeprecation = true*/)
         // Validate the type of the resolved option
         if (isset($this->allowedTypes[$option])) {
             $valid = false;
-            $invalidTypes = array();
+            $invalidTypes = [];
 
             foreach ($this->allowedTypes[$option] as $type) {
                 $type = self::$typeAliases[$type] ?? $type;
@@ -893,7 +893,7 @@ public function offsetGet($option/*, bool $triggerDeprecation = true*/)
         // Validate the value of the resolved option
         if (isset($this->allowedValues[$option])) {
             $success = false;
-            $printableAllowedValues = array();
+            $printableAllowedValues = [];
 
             foreach ($this->allowedValues[$option] as $allowedValue) {
                 if ($allowedValue instanceof \Closure) {
@@ -954,7 +954,7 @@ public function offsetGet($option/*, bool $triggerDeprecation = true*/)
             }
 
             if ('' !== $deprecationMessage) {
-                @trigger_error(strtr($deprecationMessage, array('%name%' => $option)), E_USER_DEPRECATED);
+                @trigger_error(strtr($deprecationMessage, ['%name%' => $option]), E_USER_DEPRECATED);
             }
         }
 
diff --git a/src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php b/src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php
index 9de41871e9fa..886a88ebfa66 100644
--- a/src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php
+++ b/src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php
@@ -496,7 +496,7 @@ public function testLazyDeprecationFailsIfInvalidDeprecationMessageType()
                 return false;
             })
         ;
-        $this->resolver->resolve(array('foo' => null));
+        $this->resolver->resolve(['foo' => null]);
     }
 
     /**
@@ -506,7 +506,7 @@ public function testLazyDeprecationFailsIfInvalidDeprecationMessageType()
     public function testFailsIfCyclicDependencyBetweenDeprecation()
     {
         $this->resolver
-            ->setDefined(array('foo', 'bar'))
+            ->setDefined(['foo', 'bar'])
             ->setDeprecated('foo', function (Options $options, $value) {
                 $options['bar'];
             })
@@ -514,7 +514,7 @@ public function testFailsIfCyclicDependencyBetweenDeprecation()
                 $options['foo'];
             })
         ;
-        $this->resolver->resolve(array('foo' => null, 'bar' => null));
+        $this->resolver->resolve(['foo' => null, 'bar' => null]);
     }
 
     public function testIsDeprecated()
@@ -564,22 +564,22 @@ public function testDeprecationMessages(\Closure $configureOptions, array $optio
 
     public function provideDeprecationData()
     {
-        yield 'It deprecates an option with default message' => array(
+        yield 'It deprecates an option with default message' => [
             function (OptionsResolver $resolver) {
                 $resolver
-                    ->setDefined(array('foo', 'bar'))
+                    ->setDefined(['foo', 'bar'])
                     ->setDeprecated('foo')
                 ;
             },
-            array('foo' => 'baz'),
-            array(
+            ['foo' => 'baz'],
+            [
                 'type' => E_USER_DEPRECATED,
                 'message' => 'The option "foo" is deprecated.',
-            ),
+            ],
             1,
-        );
+        ];
 
-        yield 'It deprecates an option with custom message' => array(
+        yield 'It deprecates an option with custom message' => [
             function (OptionsResolver $resolver) {
                 $resolver
                     ->setDefined('foo')
@@ -589,15 +589,15 @@ function (OptionsResolver $resolver) {
                     ->setDeprecated('foo', 'The option "foo" is deprecated, use "bar" option instead.')
                 ;
             },
-            array('foo' => 'baz'),
-            array(
+            ['foo' => 'baz'],
+            [
                 'type' => E_USER_DEPRECATED,
                 'message' => 'The option "foo" is deprecated, use "bar" option instead.',
-            ),
+            ],
             2,
-        );
+        ];
 
-        yield 'It deprecates an option evaluated in another definition' => array(
+        yield 'It deprecates an option evaluated in another definition' => [
             function (OptionsResolver $resolver) {
                 // defined by superclass
                 $resolver
@@ -609,19 +609,19 @@ function (OptionsResolver $resolver) {
                     return $options['foo']; // It triggers a deprecation
                 });
             },
-            array(),
-            array(
+            [],
+            [
                 'type' => E_USER_DEPRECATED,
                 'message' => 'The option "foo" is deprecated.',
-            ),
+            ],
             1,
-        );
+        ];
 
-        yield 'It deprecates allowed type and value' => array(
+        yield 'It deprecates allowed type and value' => [
             function (OptionsResolver $resolver) {
                 $resolver
                     ->setDefault('foo', null)
-                    ->setAllowedTypes('foo', array('null', 'string', \stdClass::class))
+                    ->setAllowedTypes('foo', ['null', 'string', \stdClass::class])
                     ->setDeprecated('foo', function (Options $options, $value) {
                         if ($value instanceof \stdClass) {
                             return sprintf('Passing an instance of "%s" to option "foo" is deprecated, pass its FQCN instead.', \stdClass::class);
@@ -631,19 +631,19 @@ function (OptionsResolver $resolver) {
                     })
                 ;
             },
-            array('foo' => new \stdClass()),
-            array(
+            ['foo' => new \stdClass()],
+            [
                 'type' => E_USER_DEPRECATED,
                 'message' => 'Passing an instance of "stdClass" to option "foo" is deprecated, pass its FQCN instead.',
-            ),
+            ],
             1,
-        );
+        ];
 
-        yield 'It triggers a deprecation based on the value only if option is provided by the user' => array(
+        yield 'It triggers a deprecation based on the value only if option is provided by the user' => [
             function (OptionsResolver $resolver) {
                 $resolver
                     ->setDefined('foo')
-                    ->setAllowedTypes('foo', array('null', 'bool'))
+                    ->setAllowedTypes('foo', ['null', 'bool'])
                     ->setDeprecated('foo', function (Options $options, $value) {
                         if (!\is_bool($value)) {
                             return 'Passing a value different than true or false is deprecated.';
@@ -652,7 +652,7 @@ function (OptionsResolver $resolver) {
                         return '';
                     })
                     ->setDefault('baz', null)
-                    ->setAllowedTypes('baz', array('null', 'int'))
+                    ->setAllowedTypes('baz', ['null', 'int'])
                     ->setDeprecated('baz', function (Options $options, $value) {
                         if (!\is_int($value)) {
                             return 'Not passing an integer is deprecated.';
@@ -667,15 +667,15 @@ function (OptionsResolver $resolver) {
                     })
                 ;
             },
-            array('foo' => null), // It triggers a deprecation
-            array(
+            ['foo' => null], // It triggers a deprecation
+            [
                 'type' => E_USER_DEPRECATED,
                 'message' => 'Passing a value different than true or false is deprecated.',
-            ),
+            ],
             1,
-        );
+        ];
 
-        yield 'It ignores a deprecation if closure returns an empty string' => array(
+        yield 'It ignores a deprecation if closure returns an empty string' => [
             function (OptionsResolver $resolver) {
                 $resolver
                     ->setDefault('foo', null)
@@ -684,12 +684,12 @@ function (OptionsResolver $resolver) {
                     })
                 ;
             },
-            array('foo' => Bar::class),
+            ['foo' => Bar::class],
             null,
             0,
-        );
+        ];
 
-        yield 'It deprecates value depending on other option value' => array(
+        yield 'It deprecates value depending on other option value' => [
             function (OptionsResolver $resolver) {
                 $resolver
                     ->setDefault('widget', null)
@@ -703,15 +703,15 @@ function (OptionsResolver $resolver) {
                     })
                 ;
             },
-            array('widget' => 'single_text', 'date_format' => 2),
-            array(
+            ['widget' => 'single_text', 'date_format' => 2],
+            [
                 'type' => E_USER_DEPRECATED,
                 'message' => 'Using the "date_format" option when the "widget" option is set to "single_text" is deprecated.',
-            ),
+            ],
             1,
-        );
+        ];
 
-        yield 'It triggers a deprecation for each evaluation' => array(
+        yield 'It triggers a deprecation for each evaluation' => [
             function (OptionsResolver $resolver) {
                 $resolver
                     // defined by superclass
@@ -729,15 +729,15 @@ function (OptionsResolver $resolver) {
                     })
                 ;
             },
-            array('foo' => 'baz'), // It triggers a deprecation
-            array(
+            ['foo' => 'baz'], // It triggers a deprecation
+            [
                 'type' => E_USER_DEPRECATED,
                 'message' => 'The option "foo" is deprecated.',
-            ),
+            ],
             4,
-        );
+        ];
 
-        yield 'It ignores a deprecation if no option is provided by the user' => array(
+        yield 'It ignores a deprecation if no option is provided by the user' => [
             function (OptionsResolver $resolver) {
                 $resolver
                     ->setDefined('foo')
@@ -746,12 +746,12 @@ function (OptionsResolver $resolver) {
                     ->setDeprecated('bar')
                 ;
             },
-            array(),
+            [],
             null,
             0,
-        );
+        ];
 
-        yield 'It explicitly ignores a depreciation' => array(
+        yield 'It explicitly ignores a depreciation' => [
             function (OptionsResolver $resolver) {
                 $resolver
                     ->setDefault('baz', function (Options $options) {
@@ -764,10 +764,10 @@ function (OptionsResolver $resolver) {
                     })
                 ;
             },
-            array(),
+            [],
             null,
             0,
-        );
+        ];
     }
 
     /**
@@ -2056,11 +2056,11 @@ public function testNestedArrayException5()
 
     public function testIsNestedOption()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'database' => function (OptionsResolver $resolver) {
-                $resolver->setDefined(array('host', 'port'));
+                $resolver->setDefined(['host', 'port']);
             },
-        ));
+        ]);
         $this->assertTrue($this->resolver->isNested('database'));
     }
 
@@ -2070,15 +2070,15 @@ public function testIsNestedOption()
      */
     public function testFailsIfUndefinedNestedOption()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'name' => 'default',
             'database' => function (OptionsResolver $resolver) {
-                $resolver->setDefined(array('host', 'port'));
+                $resolver->setDefined(['host', 'port']);
             },
-        ));
-        $this->resolver->resolve(array(
-            'database' => array('foo' => 'bar'),
-        ));
+        ]);
+        $this->resolver->resolve([
+            'database' => ['foo' => 'bar'],
+        ]);
     }
 
     /**
@@ -2087,15 +2087,15 @@ public function testFailsIfUndefinedNestedOption()
      */
     public function testFailsIfMissingRequiredNestedOption()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'name' => 'default',
             'database' => function (OptionsResolver $resolver) {
                 $resolver->setRequired('host');
             },
-        ));
-        $this->resolver->resolve(array(
-            'database' => array(),
-        ));
+        ]);
+        $this->resolver->resolve([
+            'database' => [],
+        ]);
     }
 
     /**
@@ -2104,17 +2104,17 @@ public function testFailsIfMissingRequiredNestedOption()
      */
     public function testFailsIfInvalidTypeNestedOption()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'name' => 'default',
             'database' => function (OptionsResolver $resolver) {
                 $resolver
                     ->setDefined('logging')
                     ->setAllowedTypes('logging', 'bool');
             },
-        ));
-        $this->resolver->resolve(array(
-            'database' => array('logging' => null),
-        ));
+        ]);
+        $this->resolver->resolve([
+            'database' => ['logging' => null],
+        ]);
     }
 
     /**
@@ -2123,135 +2123,135 @@ public function testFailsIfInvalidTypeNestedOption()
      */
     public function testFailsIfNotArrayIsGivenForNestedOptions()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'name' => 'default',
             'database' => function (OptionsResolver $resolver) {
                 $resolver->setDefined('host');
             },
-        ));
-        $this->resolver->resolve(array(
+        ]);
+        $this->resolver->resolve([
             'database' => null,
-        ));
+        ]);
     }
 
     public function testResolveNestedOptionsWithoutDefault()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'name' => 'default',
             'database' => function (OptionsResolver $resolver) {
-                $resolver->setDefined(array('host', 'port'));
+                $resolver->setDefined(['host', 'port']);
             },
-        ));
+        ]);
         $actualOptions = $this->resolver->resolve();
-        $expectedOptions = array(
+        $expectedOptions = [
             'name' => 'default',
-            'database' => array(),
-        );
+            'database' => [],
+        ];
         $this->assertSame($expectedOptions, $actualOptions);
     }
 
     public function testResolveNestedOptionsWithDefault()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'name' => 'default',
             'database' => function (OptionsResolver $resolver) {
-                $resolver->setDefaults(array(
+                $resolver->setDefaults([
                     'host' => 'localhost',
                     'port' => 3306,
-                ));
+                ]);
             },
-        ));
+        ]);
         $actualOptions = $this->resolver->resolve();
-        $expectedOptions = array(
+        $expectedOptions = [
             'name' => 'default',
-            'database' => array(
+            'database' => [
                 'host' => 'localhost',
                 'port' => 3306,
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expectedOptions, $actualOptions);
     }
 
     public function testResolveMultipleNestedOptions()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'name' => 'default',
             'database' => function (OptionsResolver $resolver) {
                 $resolver
-                    ->setRequired(array('dbname', 'host'))
-                    ->setDefaults(array(
+                    ->setRequired(['dbname', 'host'])
+                    ->setDefaults([
                         'port' => 3306,
                         'replicas' => function (OptionsResolver $resolver) {
-                            $resolver->setDefaults(array(
+                            $resolver->setDefaults([
                                 'host' => 'replica1',
                                 'port' => 3306,
-                            ));
+                            ]);
                         },
-                    ));
+                    ]);
             },
-        ));
-        $actualOptions = $this->resolver->resolve(array(
+        ]);
+        $actualOptions = $this->resolver->resolve([
             'name' => 'custom',
-            'database' => array(
+            'database' => [
                 'dbname' => 'test',
                 'host' => 'localhost',
                 'port' => null,
-                'replicas' => array('host' => 'replica2'),
-            ),
-        ));
-        $expectedOptions = array(
+                'replicas' => ['host' => 'replica2'],
+            ],
+        ]);
+        $expectedOptions = [
             'name' => 'custom',
-            'database' => array(
+            'database' => [
                 'port' => null,
-                'replicas' => array('port' => 3306, 'host' => 'replica2'),
+                'replicas' => ['port' => 3306, 'host' => 'replica2'],
                 'dbname' => 'test',
                 'host' => 'localhost',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expectedOptions, $actualOptions);
     }
 
     public function testResolveLazyOptionUsingNestedOption()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'version' => function (Options $options) {
                 return $options['database']['server_version'];
             },
             'database' => function (OptionsResolver $resolver) {
                 $resolver->setDefault('server_version', '3.15');
             },
-        ));
+        ]);
         $actualOptions = $this->resolver->resolve();
-        $expectedOptions = array(
-            'database' => array('server_version' => '3.15'),
+        $expectedOptions = [
+            'database' => ['server_version' => '3.15'],
             'version' => '3.15',
-        );
+        ];
         $this->assertSame($expectedOptions, $actualOptions);
     }
 
     public function testNormalizeNestedOptionValue()
     {
         $this->resolver
-            ->setDefaults(array(
+            ->setDefaults([
                 'database' => function (OptionsResolver $resolver) {
-                    $resolver->setDefaults(array(
+                    $resolver->setDefaults([
                         'port' => 3306,
                         'host' => 'localhost',
                         'dbname' => 'demo',
-                    ));
+                    ]);
                 },
-            ))
+            ])
             ->setNormalizer('database', function (Options $options, $value) {
                 ksort($value);
 
                 return $value;
             });
-        $actualOptions = $this->resolver->resolve(array(
-            'database' => array('dbname' => 'test'),
-        ));
-        $expectedOptions = array(
-            'database' => array('dbname' => 'test', 'host' => 'localhost', 'port' => 3306),
-        );
+        $actualOptions = $this->resolver->resolve([
+            'database' => ['dbname' => 'test'],
+        ]);
+        $expectedOptions = [
+            'database' => ['dbname' => 'test', 'host' => 'localhost', 'port' => 3306],
+        ];
         $this->assertSame($expectedOptions, $actualOptions);
     }
 
@@ -2265,7 +2265,7 @@ public function testOverwrittenNestedOptionNotEvaluatedIfLazyDefault()
         $this->resolver->setDefault('foo', function (Options $options) {
             return 'lazy';
         });
-        $this->assertSame(array('foo' => 'lazy'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'lazy'], $this->resolver->resolve());
     }
 
     public function testOverwrittenNestedOptionNotEvaluatedIfScalarDefault()
@@ -2276,7 +2276,7 @@ public function testOverwrittenNestedOptionNotEvaluatedIfScalarDefault()
         });
         // defined by subclass
         $this->resolver->setDefault('foo', 'bar');
-        $this->assertSame(array('foo' => 'bar'), $this->resolver->resolve());
+        $this->assertSame(['foo' => 'bar'], $this->resolver->resolve());
     }
 
     public function testOverwrittenLazyOptionNotEvaluatedIfNestedOption()
@@ -2289,7 +2289,7 @@ public function testOverwrittenLazyOptionNotEvaluatedIfNestedOption()
         $this->resolver->setDefault('foo', function (OptionsResolver $resolver) {
             $resolver->setDefault('bar', 'baz');
         });
-        $this->assertSame(array('foo' => array('bar' => 'baz')), $this->resolver->resolve());
+        $this->assertSame(['foo' => ['bar' => 'baz']], $this->resolver->resolve());
     }
 
     public function testResolveAllNestedOptionDefinitions()
@@ -2306,7 +2306,7 @@ public function testResolveAllNestedOptionDefinitions()
         $this->resolver->setDefault('foo', function (OptionsResolver $resolver) {
             $resolver->setDefault('ping', 'pong');
         });
-        $this->assertSame(array('foo' => array('ping' => 'pong', 'bar' => 'baz')), $this->resolver->resolve());
+        $this->assertSame(['foo' => ['ping' => 'pong', 'bar' => 'baz']], $this->resolver->resolve());
     }
 
     public function testNormalizeNestedValue()
@@ -2323,7 +2323,7 @@ public function testNormalizeNestedValue()
 
             return $resolvedValue;
         });
-        $this->assertSame(array('foo' => array('bar' => 'baz')), $this->resolver->resolve());
+        $this->assertSame(['foo' => ['bar' => 'baz']], $this->resolver->resolve());
     }
 
     /**
@@ -2342,14 +2342,14 @@ public function testFailsIfCyclicDependencyBetweenSameNestedOption()
      */
     public function testFailsIfCyclicDependencyBetweenNestedOptionAndParentLazyOption()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'version' => function (Options $options) {
                 return $options['database']['server_version'];
             },
             'database' => function (OptionsResolver $resolver, Options $parent) {
                 $resolver->setDefault('server_version', $parent['version']);
             },
-        ));
+        ]);
         $this->resolver->resolve();
     }
 
@@ -2385,13 +2385,13 @@ public function testFailsIfCyclicDependencyBetweenNestedOptions()
 
     public function testGetAccessToParentOptionFromNestedOption()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'version' => 3.15,
             'database' => function (OptionsResolver $resolver, Options $parent) {
                 $resolver->setDefault('server_version', $parent['version']);
             },
-        ));
-        $this->assertSame(array('version' => 3.15, 'database' => array('server_version' => 3.15)), $this->resolver->resolve());
+        ]);
+        $this->assertSame(['version' => 3.15, 'database' => ['server_version' => 3.15]], $this->resolver->resolve());
     }
 
     public function testNestedClosureWithoutTypeHintNotInvoked()
@@ -2400,7 +2400,7 @@ public function testNestedClosureWithoutTypeHintNotInvoked()
             Assert::fail('Should not be called');
         };
         $this->resolver->setDefault('foo', $closure);
-        $this->assertSame(array('foo' => $closure), $this->resolver->resolve());
+        $this->assertSame(['foo' => $closure], $this->resolver->resolve());
     }
 
     public function testNestedClosureWithoutTypeHint2ndArgumentNotInvoked()
@@ -2409,12 +2409,12 @@ public function testNestedClosureWithoutTypeHint2ndArgumentNotInvoked()
             Assert::fail('Should not be called');
         };
         $this->resolver->setDefault('foo', $closure);
-        $this->assertSame(array('foo' => $closure), $this->resolver->resolve());
+        $this->assertSame(['foo' => $closure], $this->resolver->resolve());
     }
 
     public function testResolveLazyOptionWithTransitiveDefaultDependency()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'ip' => null,
             'database' => function (OptionsResolver $resolver, Options $parent) {
                 $resolver->setDefault('host', $parent['ip']);
@@ -2425,22 +2425,22 @@ public function testResolveLazyOptionWithTransitiveDefaultDependency()
             'secondary_replica' => function (Options $options) {
                 return $options['database']['primary_replica']['host'];
             },
-        ));
-        $actualOptions = $this->resolver->resolve(array('ip' => '127.0.0.1'));
-        $expectedOptions = array(
+        ]);
+        $actualOptions = $this->resolver->resolve(['ip' => '127.0.0.1']);
+        $expectedOptions = [
             'ip' => '127.0.0.1',
-            'database' => array(
+            'database' => [
                 'host' => '127.0.0.1',
-                'primary_replica' => array('host' => '127.0.0.1'),
-            ),
+                'primary_replica' => ['host' => '127.0.0.1'],
+            ],
             'secondary_replica' => '127.0.0.1',
-        );
+        ];
         $this->assertSame($expectedOptions, $actualOptions);
     }
 
     public function testAccessToParentOptionFromNestedNormalizerAndLazyOption()
     {
-        $this->resolver->setDefaults(array(
+        $this->resolver->setDefaults([
             'debug' => true,
             'database' => function (OptionsResolver $resolver, Options $parent) {
                 $resolver
@@ -2452,15 +2452,15 @@ public function testAccessToParentOptionFromNestedNormalizerAndLazyOption()
                         return false === $parent['debug'] ? true : $value;
                     });
             },
-        ));
-        $actualOptions = $this->resolver->resolve(array(
+        ]);
+        $actualOptions = $this->resolver->resolve([
             'debug' => false,
-            'database' => array('logging' => false),
-        ));
-        $expectedOptions = array(
+            'database' => ['logging' => false],
+        ]);
+        $expectedOptions = [
             'debug' => false,
-            'database' => array('profiling' => false, 'logging' => true),
-        );
+            'database' => ['profiling' => false, 'logging' => true],
+        ];
         $this->assertSame($expectedOptions, $actualOptions);
     }
 }
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index 49286c1a9b99..8b7f539e0fe1 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -190,7 +190,7 @@ public function __construct($command, string $cwd = null, array $env = null, $in
      */
     public static function fromShellCommandline(string $command, string $cwd = null, array $env = null, $input = null, ?float $timeout = 60)
     {
-        $process = new static(array(), $cwd, $env, $input, $timeout);
+        $process = new static([], $cwd, $env, $input, $timeout);
         $process->commandline = $command;
 
         return $process;
diff --git a/src/Symfony/Component/Process/Tests/KillableProcessWithOutput.php b/src/Symfony/Component/Process/Tests/KillableProcessWithOutput.php
index 2bbc386d0fad..28a6a271bbab 100644
--- a/src/Symfony/Component/Process/Tests/KillableProcessWithOutput.php
+++ b/src/Symfony/Component/Process/Tests/KillableProcessWithOutput.php
@@ -9,12 +9,12 @@
  * file that was distributed with this source code.
  */
 
-$outputs = array(
+$outputs = [
     'First iteration output',
     'Second iteration output',
     'One more iteration output',
     'This took more time',
-);
+];
 
 $iterationTime = 10000;
 
diff --git a/src/Symfony/Component/Process/Tests/ProcessFailedExceptionTest.php b/src/Symfony/Component/Process/Tests/ProcessFailedExceptionTest.php
index d8fdb5c1f075..2467c960e840 100644
--- a/src/Symfony/Component/Process/Tests/ProcessFailedExceptionTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessFailedExceptionTest.php
@@ -24,7 +24,7 @@ class ProcessFailedExceptionTest extends TestCase
      */
     public function testProcessFailedExceptionThrowsException()
     {
-        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(array('isSuccessful'))->setConstructorArgs(array(array('php')))->getMock();
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful'])->setConstructorArgs([['php']])->getMock();
         $process->expects($this->once())
             ->method('isSuccessful')
             ->will($this->returnValue(true));
@@ -52,7 +52,7 @@ public function testProcessFailedExceptionPopulatesInformationFromProcessOutput(
         $errorOutput = 'FATAL: Unexpected error';
         $workingDirectory = getcwd();
 
-        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(array('isSuccessful', 'getOutput', 'getErrorOutput', 'getExitCode', 'getExitCodeText', 'isOutputDisabled', 'getWorkingDirectory'))->setConstructorArgs(array(array($cmd)))->getMock();
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful', 'getOutput', 'getErrorOutput', 'getExitCode', 'getExitCodeText', 'isOutputDisabled', 'getWorkingDirectory'])->setConstructorArgs([[$cmd]])->getMock();
         $process->expects($this->once())
             ->method('isSuccessful')
             ->will($this->returnValue(false));
@@ -100,7 +100,7 @@ public function testDisabledOutputInFailedExceptionDoesNotPopulateOutput()
         $exitText = 'General error';
         $workingDirectory = getcwd();
 
-        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(array('isSuccessful', 'isOutputDisabled', 'getExitCode', 'getExitCodeText', 'getOutput', 'getErrorOutput', 'getWorkingDirectory'))->setConstructorArgs(array(array($cmd)))->getMock();
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful', 'isOutputDisabled', 'getExitCode', 'getExitCodeText', 'getOutput', 'getErrorOutput', 'getWorkingDirectory'])->setConstructorArgs([[$cmd]])->getMock();
         $process->expects($this->once())
             ->method('isSuccessful')
             ->will($this->returnValue(false));
diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
index 60162975fd40..cf5685994cdb 100644
--- a/src/Symfony/Component/Process/Tests/ProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -55,13 +55,13 @@ public function testInvalidCwd()
     {
         try {
             // Check that it works fine if the CWD exists
-            $cmd = new Process(array('echo', 'test'), __DIR__);
+            $cmd = new Process(['echo', 'test'], __DIR__);
             $cmd->run();
         } catch (\Exception $e) {
             $this->fail($e);
         }
 
-        $cmd = new Process(array('echo', 'test'), __DIR__.'/notfound/');
+        $cmd = new Process(['echo', 'test'], __DIR__.'/notfound/');
         $cmd->run();
     }
 
@@ -114,7 +114,7 @@ public function testFloatAndNullTimeout()
      */
     public function testStopWithTimeoutIsActuallyWorking()
     {
-        $p = $this->getProcess(array(self::$phpBin, __DIR__.'/NonStopableProcess.php', 30));
+        $p = $this->getProcess([self::$phpBin, __DIR__.'/NonStopableProcess.php', 30]);
         $p->start();
 
         while ($p->isRunning() && false === strpos($p->getOutput(), 'received')) {
@@ -135,7 +135,7 @@ public function testStopWithTimeoutIsActuallyWorking()
 
     public function testWaitUntilSpecificOutput()
     {
-        $p = $this->getProcess(array(self::$phpBin, __DIR__.'/KillableProcessWithOutput.php'));
+        $p = $this->getProcess([self::$phpBin, __DIR__.'/KillableProcessWithOutput.php']);
         $p->start();
 
         $start = microtime(true);
@@ -304,10 +304,10 @@ public function testInvalidInput($value)
 
     public function provideInvalidInputValues()
     {
-        return array(
-            array(array()),
-            array(new NonStringifiable()),
-        );
+        return [
+            [[]],
+            [new NonStringifiable()],
+        ];
     }
 
     /**
@@ -322,25 +322,25 @@ public function testValidInput($expected, $value)
 
     public function provideInputValues()
     {
-        return array(
-            array(null, null),
-            array('24.5', 24.5),
-            array('input data', 'input data'),
-        );
+        return [
+            [null, null],
+            ['24.5', 24.5],
+            ['input data', 'input data'],
+        ];
     }
 
     public function chainedCommandsOutputProvider()
     {
         if ('\\' === \DIRECTORY_SEPARATOR) {
-            return array(
-                array("2 \r\n2\r\n", '&&', '2'),
-            );
+            return [
+                ["2 \r\n2\r\n", '&&', '2'],
+            ];
         }
 
-        return array(
-            array("1\n1\n", ';', '1'),
-            array("2\n2\n", '&&', '2'),
-        );
+        return [
+            ["1\n1\n", ';', '1'],
+            ["2\n2\n", '&&', '2'],
+        ];
     }
 
     /**
@@ -409,7 +409,7 @@ public function testIncrementalOutput($getOutput, $getIncrementalOutput, $uri)
 
         $p->start();
 
-        foreach (array('foo', 'bar') as $s) {
+        foreach (['foo', 'bar'] as $s) {
             while (false === strpos($p->$getOutput(), $s)) {
                 usleep(1000);
             }
@@ -425,10 +425,10 @@ public function testIncrementalOutput($getOutput, $getIncrementalOutput, $uri)
 
     public function provideIncrementalOutput()
     {
-        return array(
-            array('getOutput', 'getIncrementalOutput', 'php://stdout'),
-            array('getErrorOutput', 'getIncrementalErrorOutput', 'php://stderr'),
-        );
+        return [
+            ['getOutput', 'getIncrementalOutput', 'php://stdout'],
+            ['getErrorOutput', 'getIncrementalErrorOutput', 'php://stderr'],
+        ];
     }
 
     public function testGetOutput()
@@ -911,7 +911,7 @@ public function testGetPidIsNullAfterRun()
      */
     public function testSignal()
     {
-        $process = $this->getProcess(array(self::$phpBin, __DIR__.'/SignalListener.php'));
+        $process = $this->getProcess([self::$phpBin, __DIR__.'/SignalListener.php']);
         $process->start();
 
         while (false === strpos($process->getOutp
10000
ut(), 'Caught')) {
@@ -971,13 +971,13 @@ public function testMethodsThatNeedARunningProcess($method)
 
     public function provideMethodsThatNeedARunningProcess()
     {
-        return array(
-            array('getOutput'),
-            array('getIncrementalOutput'),
-            array('getErrorOutput'),
-            array('getIncrementalErrorOutput'),
-            array('wait'),
-        );
+        return [
+            ['getOutput'],
+            ['getIncrementalOutput'],
+            ['getErrorOutput'],
+            ['getIncrementalErrorOutput'],
+            ['wait'],
+        ];
     }
 
     /**
@@ -1002,12 +1002,12 @@ public function testMethodsThatNeedATerminatedProcess($method)
 
     public function provideMethodsThatNeedATerminatedProcess()
     {
-        return array(
-            array('hasBeenSignaled'),
-            array('getTermSignal'),
-            array('hasBeenStopped'),
-            array('getStopSignal'),
-        );
+        return [
+            ['hasBeenSignaled'],
+            ['getTermSignal'],
+            ['hasBeenStopped'],
+            ['getStopSignal'],
+        ];
     }
 
     /**
@@ -1118,12 +1118,12 @@ public function testGetOutputWhileDisabled($fetchMethod)
 
     public function provideOutputFetchingMethods()
     {
-        return array(
-            array('getOutput'),
-            array('getIncrementalOutput'),
-            array('getErrorOutput'),
-            array('getIncrementalErrorOutput'),
-        );
+        return [
+            ['getOutput'],
+            ['getIncrementalOutput'],
+            ['getErrorOutput'],
+            ['getIncrementalErrorOutput'],
+        ];
     }
 
     public function testStopTerminatesProcessCleanly()
@@ -1155,32 +1155,32 @@ public function testTermSignalTerminatesProcessCleanly()
 
     public function responsesCodeProvider()
     {
-        return array(
+        return [
             //expected output / getter / code to execute
             //array(1,'getExitCode','exit(1);'),
             //array(true,'isSuccessful','exit();'),
-            array('output', 'getOutput', 'echo \'output\';'),
-        );
+            ['output', 'getOutput', 'echo \'output\';'],
+        ];
     }
 
     public function pipesCodeProvider()
     {
-        $variations = array(
+        $variations = [
             'fwrite(STDOUT, $in = file_get_contents(\'php://stdin\')); fwrite(STDERR, $in);',
             'include \''.__DIR__.'/PipeStdinInStdoutStdErrStreamSelect.php\';',
-        );
+        ];
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
             // Avoid XL buffers on Windows because of https://bugs.php.net/bug.php?id=65650
-            $sizes = array(1, 2, 4, 8);
+            $sizes = [1, 2, 4, 8];
         } else {
-            $sizes = array(1, 16, 64, 1024, 4096);
+            $sizes = [1, 16, 64, 1024, 4096];
         }
 
-        $codes = array();
+        $codes = [];
         foreach ($sizes as $size) {
             foreach ($variations as $code) {
-                $codes[] = array($code, $size);
+                $codes[] = [$code, $size];
             }
         }
 
@@ -1208,10 +1208,10 @@ public function testIncrementalOutputDoesNotRequireAnotherCall($stream, $method)
 
     public function provideVariousIncrementals()
     {
-        return array(
-            array('php://stdout', 'getIncrementalOutput'),
-            array('php://stderr', 'getIncrementalErrorOutput'),
-        );
+        return [
+            ['php://stdout', 'getIncrementalOutput'],
+            ['php://stderr', 'getIncrementalErrorOutput'],
+        ];
     }
 
     public function testIteratorInput()
@@ -1316,32 +1316,32 @@ public function testIteratorOutput()
         $process = $this->getProcessForCode('fwrite(STDOUT, 123); fwrite(STDERR, 234); flush(); usleep(10000); fwrite(STDOUT, fread(STDIN, 3)); fwrite(STDERR, 456);');
         $process->setInput($input);
         $process->start();
-        $output = array();
+        $output = [];
 
         foreach ($process as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
             break;
         }
-        $expectedOutput = array(
-            array($process::OUT, '123'),
-        );
+        $expectedOutput = [
+            [$process::OUT, '123'],
+        ];
         $this->assertSame($expectedOutput, $output);
 
         $input->write(345);
 
         foreach ($process as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
         }
 
         $this->assertSame('', $process->getOutput());
         $this->assertFalse($process->isRunning());
 
-        $expectedOutput = array(
-            array($process::OUT, '123'),
-            array($process::ERR, '234'),
-            array($process::OUT, '345'),
-            array($process::ERR, '456'),
-        );
+        $expectedOutput = [
+            [$process::OUT, '123'],
+            [$process::ERR, '234'],
+            [$process::OUT, '345'],
+            [$process::ERR, '456'],
+        ];
         $this->assertSame($expectedOutput, $output);
     }
 
@@ -1352,32 +1352,32 @@ public function testNonBlockingNorClearingIteratorOutput()
         $process = $this->getProcessForCode('fwrite(STDOUT, fread(STDIN, 3));');
         $process->setInput($input);
         $process->start();
-        $output = array();
+        $output = [];
 
         foreach ($process->getIterator($process::ITER_NON_BLOCKING | $process::ITER_KEEP_OUTPUT) as $type => $data) {
-            $output[] = array($type, $data);
+            $output[] = [$type, $data];
             break;
         }
-        $expectedOutput = array(
-            array($process::OUT, ''),
-        );
+        $expectedOutput = [
+            [$process::OUT, ''],
+        ];
         $this->assertSame($expectedOutput, $output);
 
         $input->write(123);
 
         foreach ($process->getIterator($process::ITER_NON_BLOCKING | $process::ITER_KEEP_OUTPUT) as $type => $data) {
             if ('' !== $data) {
-                $output[] = array($type, $data);
+                $output[] = [$type, $data];
             }
         }
 
         $this->assertSame('123', $process->getOutput());
         $this->assertFalse($process->isRunning());
 
-        $expectedOutput = array(
-            array($process::OUT, ''),
-            array($process::OUT, '123'),
-        );
+        $expectedOutput = [
+            [$process::OUT, ''],
+            [$process::OUT, '123'],
+        ];
         $this->assertSame($expectedOutput, $output);
     }
 
@@ -1399,7 +1399,7 @@ public function testChainedProcesses()
     public function testSetBadEnv()
     {
         $process = $this->getProcess('echo hello');
-        $process->setEnv(array('bad%%' => '123'));
+        $process->setEnv(['bad%%' => '123']);
         $process->inheritEnvironmentVariables(true);
 
         $process->run();
@@ -1413,7 +1413,7 @@ public function testEnvBackupDoesNotDeleteExistingVars()
         putenv('existing_var=foo');
         $_ENV['existing_var'] = 'foo';
         $process = $this->getProcess('php -r "echo getenv(\'new_test_var\');"');
-        $process->setEnv(array('existing_var' => 'bar', 'new_test_var' => 'foo'));
+        $process->setEnv(['existing_var' => 'bar', 'new_test_var' => 'foo']);
         $process->inheritEnvironmentVariables();
 
         $process->run();
@@ -1428,14 +1428,14 @@ public function testEnvBackupDoesNotDeleteExistingVars()
 
     public function testEnvIsInherited()
     {
-        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, array('BAR' => 'BAZ', 'EMPTY' => ''));
+        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, ['BAR' => 'BAZ', 'EMPTY' => '']);
 
         putenv('FOO=BAR');
         $_ENV['FOO'] = 'BAR';
 
         $process->run();
 
-        $expected = array('BAR' => 'BAZ', 'EMPTY' => '', 'FOO' => 'BAR');
+        $expected = ['BAR' => 'BAZ', 'EMPTY' => '', 'FOO' => 'BAR'];
         $env = array_intersect_key(unserialize($process->getOutput()), $expected);
 
         $this->assertEquals($expected, $env);
@@ -1446,7 +1446,7 @@ public function testEnvIsInherited()
 
     public function testGetCommandLine()
     {
-        $p = new Process(array('/usr/bin/php'));
+        $p = new Process(['/usr/bin/php']);
 
         $expected = '\\' === \DIRECTORY_SEPARATOR ? '"/usr/bin/php"' : "'/usr/bin/php'";
         $this->assertSame($expected, $p->getCommandLine());
@@ -1457,7 +1457,7 @@ public function testGetCommandLine()
      */
     public function testEscapeArgument($arg)
     {
-        $p = new Process(array(self::$phpBin, '-r', 'echo $argv[1];', $arg));
+        $p = new Process([self::$phpBin, '-r', 'echo $argv[1];', $arg]);
         $p->run();
 
         $this->assertSame((string) $arg, $p->getOutput());
@@ -1483,24 +1483,24 @@ public function testRawCommandLine()
 
     public function provideEscapeArgument()
     {
-        yield array('a"b%c%');
-        yield array('a"b^c^');
-        yield array("a\nb'c");
-        yield array('a^b c!');
-        yield array("a!b\tc");
-        yield array('a\\\\"\\"');
-        yield array('éÉèÈàÀöä');
-        yield array(null);
-        yield array(1);
-        yield array(1.1);
+        yield ['a"b%c%'];
+        yield ['a"b^c^'];
+        yield ["a\nb'c"];
+        yield ['a^b c!'];
+        yield ["a!b\tc"];
+        yield ['a\\\\"\\"'];
+        yield ['éÉèÈàÀöä'];
+        yield [null];
+        yield [1];
+        yield [1.1];
     }
 
     public function testEnvArgument()
     {
-        $env = array('FOO' => 'Foo', 'BAR' => 'Bar');
+        $env = ['FOO' => 'Foo', 'BAR' => 'Bar'];
         $cmd = '\\' === \DIRECTORY_SEPARATOR ? 'echo !FOO! !BAR! !BAZ!' : 'echo $FOO $BAR $BAZ';
         $p = Process::fromShellCommandline($cmd, null, $env);
-        $p->run(null, array('BAR' => 'baR', 'BAZ' => 'baZ'));
+        $p->run(null, ['BAR' => 'baR', 'BAZ' => 'baZ']);
 
         $this->assertSame('Foo baR baZ', rtrim($p->getOutput()));
         $this->assertSame($env, $p->getEnv());
@@ -1524,7 +1524,7 @@ private function getProcess($commandline, string $cwd = null, array $env = null,
 
     private function getProcessForCode(string $code, string $cwd = null, array $env = null, $input = null, ?int $timeout = 60): Process
     {
-        return $this->getProcess(array(self::$phpBin, '-r', $code), $cwd, $env, $input, $timeout);
+        return $this->getProcess([self::$phpBin, '-r', $code], $cwd, $env, $input, $timeout);
     }
 }
 
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
index 70f5cb501330..0ed1e4e2afe3 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
@@ -150,7 +150,7 @@ public function isWritable($class, $property, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function isInitializable(string $class, string $property, array $context = array()): ?bool
+    public function isInitializable(string $class, string $property, array $context = []): ?bool
     {
         try {
             $reflectionClass = new \ReflectionClass($class);
diff --git a/src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php b/src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php
index 61794d319460..ac883e7c042a 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php
@@ -24,7 +24,7 @@ class PropertyInfoCacheExtractor implements PropertyInfoExtractorInterface, Prop
 {
     private $propertyInfoExtractor;
     private $cacheItemPool;
-    private $arrayCache = array();
+    private $arrayCache = [];
 
     public function __construct(PropertyInfoExtractorInterface $propertyInfoExtractor, CacheItemPoolInterface $cacheItemPool)
     {
@@ -35,57 +35,57 @@ public function __construct(PropertyInfoExtractorInterface $propertyInfoExtracto
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
-        return $this->extract('isReadable', array($class, $property, $context));
+        return $this->extract('isReadable', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
-        return $this->extract('isWritable', array($class, $property, $context));
+        return $this->extract('isWritable', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getShortDescription($class, $property, array $context = array())
+    public function getShortDescription($class, $property, array $context = [])
     {
-        return $this->extract('getShortDescription', array($class, $property, $context));
+        return $this->extract('getShortDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getLongDescription($class, $property, array $context = array())
+    public function getLongDescription($class, $property, array $context = [])
     {
-        return $this->extract('getLongDescription', array($class, $property, $context));
+        return $this->extract('getLongDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
-        return $this->extract('getProperties', array($class, $context));
+        return $this->extract('getProperties', [$class, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
-        return $this->extract('getTypes', array($class, $property, $context));
+        return $this->extract('getTypes', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isInitializable(string $class, string $property, array $context = array()): ?bool
+    public function isInitializable(string $class, string $property, array $context = []): ?bool
     {
-        return $this->extract('isInitializable', array($class, $property, $context));
+        return $this->extract('isInitializable', [$class, $property, $context]);
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php b/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
index a31278cfde63..d7de8d2644a7 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php
@@ -33,7 +33,7 @@ class PropertyInfoExtractor implements PropertyInfoExtractorInterface, PropertyI
      * @param iterable|PropertyAccessExtractorInterface[]        $accessExtractors
      * @param iterable|PropertyInitializableExtractorInterface[] $initializableExtractors
      */
-    public function __construct(iterable $listExtractors = array(), iterable $typeExtractors = array(), iterable $descriptionExtractors = array(), iterable $accessExtractors = array(), iterable $initializableExtractors = array())
+    public function __construct(iterable $listExtractors = [], iterable $typeExtractors = [], iterable $descriptionExtractors = [], iterable $accessExtractors = [], iterable $initializableExtractors = [])
     {
         $this->listExtractors = $listExtractors;
         $this->typeExtractors = $typeExtractors;
@@ -45,57 +45,57 @@ public function __construct(iterable $listExtractors = array(), iterable $typeEx
     /**
      * {@inheritdoc}
      */
-    public function getProperties($class, array $context = array())
+    public function getProperties($class, array $context = [])
     {
-        return $this->extract($this->listExtractors, 'getProperties', array($class, $context));
+        return $this->extract($this->listExtractors, 'getProperties', [$class, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getShortDescription($class, $property, array $context = array())
+    public function getShortDescription($class, $property, array $context = [])
     {
-        return $this->extract($this->descriptionExtractors, 'getShortDescription', array($class, $property, $context));
+        return $this->extract($this->descriptionExtractors, 'getShortDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getLongDescription($class, $property, array $context = array())
+    public function getLongDescription($class, $property, array $context = [])
     {
-        return $this->extract($this->descriptionExtractors, 'getLongDescription', array($class, $property, $context));
+        return $this->extract($this->descriptionExtractors, 'getLongDescription', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getTypes($class, $property, array $context = array())
+    public function getTypes($class, $property, array $context = [])
     {
-        return $this->extract($this->typeExtractors, 'getTypes', array($class, $property, $context));
+        return $this->extract($this->typeExtractors, 'getTypes', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isReadable($class, $property, array $context = array())
+    public function isReadable($class, $property, array $context = [])
     {
-        return $this->extract($this->accessExtractors, 'isReadable', array($class, $property, $context));
+        return $this->extract($this->accessExtractors, 'isReadable', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isWritable($class, $property, array $context = array())
+    public function isWritable($class, $property, array $context = [])
     {
-        return $this->extract($this->accessExtractors, 'isWritable', array($class, $property, $context));
+        return $this->extract($this->accessExtractors, 'isWritable', [$class, $property, $context]);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function isInitializable(string $class, string $property, array $context = array()): ?bool
+    public function isInitializable(string $class, string $property, array $context = []): ?bool
     {
-        return $this->extract($this->initializableExtractors, 'isInitializable', array($class, $property, $context));
+        return $this->extract($this->initializableExtractors, 'isInitializable', [$class, $property, $context]);
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyInfo/PropertyInitializableExtractorInterface.php b/src/Symfony/Component/PropertyInfo/PropertyInitializableExtractorInterface.php
index c00ca35c2306..13248fc194d0 100644
--- a/src/Symfony/Component/PropertyInfo/PropertyInitializableExtractorInterface.php
+++ b/src/Symfony/Component/PropertyInfo/PropertyInitializableExtractorInterface.php
@@ -21,5 +21,5 @@ interface PropertyInitializableExtractorInterface
     /**
      * Is the property initializable? Returns true if a constructor's parameter matches the given property name.
      */
-    public function isInitializable(string $class, string $property, array $context = array()): ?bool;
+    public function isInitializable(string $class, string $property, array $context = []): ?bool;
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/AbstractPropertyInfoExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/AbstractPropertyInfoExtractorTest.php
index 600679802098..928e867decd9 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/AbstractPropertyInfoExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/AbstractPropertyInfoExtractorTest.php
@@ -30,7 +30,7 @@ class AbstractPropertyInfoExtractorTest extends TestCase
 
     protected function setUp()
     {
-        $extractors = array(new NullExtractor(), new DummyExtractor());
+        $extractors = [new NullExtractor(), new DummyExtractor()];
         $this->propertyInfo = new PropertyInfoExtractor($extractors, $extractors, $extractors, $extractors, $extractors);
     }
 
@@ -45,36 +45,36 @@ public function testInstanceOf()
 
     public function testGetShortDescription()
     {
-        $this->assertSame('short', $this->propertyInfo->getShortDescription('Foo', 'bar', array()));
+        $this->assertSame('short', $this->propertyInfo->getShortDescription('Foo', 'bar', []));
     }
 
     public function testGetLongDescription()
     {
-        $this->assertSame('long', $this->propertyInfo->getLongDescription('Foo', 'bar', array()));
+        $this->assertSame('long', $this->propertyInfo->getLongDescription('Foo', 'bar', []));
     }
 
     public function testGetTypes()
     {
-        $this->assertEquals(array(new Type(Type::BUILTIN_TYPE_INT)), $this->propertyInfo->getTypes('Foo', 'bar', array()));
+        $this->assertEquals([new Type(Type::BUILTIN_TYPE_INT)], $this->propertyInfo->getTypes('Foo', 'bar', []));
     }
 
     public function testIsReadable()
     {
-        $this->assertTrue($this->propertyInfo->isReadable('Foo', 'bar', array()));
+        $this->assertTrue($this->propertyInfo->isReadable('Foo', 'bar', []));
     }
 
     public function testIsWritable()
     {
-        $this->assertTrue($this->propertyInfo->isWritable('Foo', 'bar', array()));
+        $this->assertTrue($this->propertyInfo->isWritable('Foo', 'bar', []));
     }
 
     public function testGetProperties()
     {
-        $this->assertEquals(array('a', 'b'), $this->propertyInfo->getProperties('Foo'));
+        $this->assertEquals(['a', 'b'], $this->propertyInfo->getProperties('Foo'));
     }
 
     public function testIsInitializable()
     {
-        $this->assertTrue($this->propertyInfo->isInitializable('Foo', 'bar', array()));
+        $this->assertTrue($this->propertyInfo->isInitializable('Foo', 'bar', []));
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/DependencyInjection/PropertyInfoPassTest.php b/src/Symfony/Component/PropertyInfo/Tests/DependencyInjection/PropertyInfoPassTest.php
index 29feddce55f4..aea826e21006 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/DependencyInjection/PropertyInfoPassTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/DependencyInjection/PropertyInfoPassTest.php
@@ -26,46 +26,46 @@ public function testServicesAreOrderedAccordingToPriority($index, $tag)
     {
         $container = new ContainerBuilder();
 
-        $definition = $container->register('property_info')->setArguments(array(null, null, null, null, null));
-        $container->register('n2')->addTag($tag, array('priority' => 100));
-        $container->register('n1')->addTag($tag, array('priority' => 200));
+        $definition = $container->register('property_info')->setArguments([null, null, null, null, null]);
+        $container->register('n2')->addTag($tag, ['priority' => 100]);
+        $container->register('n1')->addTag($tag, ['priority' => 200]);
         $container->register('n3')->addTag($tag);
 
         $propertyInfoPass = new PropertyInfoPass();
         $propertyInfoPass->process($container);
 
-        $expected = new IteratorArgument(array(
+        $expected = new IteratorArgument([
             new Reference('n1'),
             new Reference('n2'),
             new Reference('n3'),
-        ));
+        ]);
         $this->assertEquals($expected, $definition->getArgument($index));
     }
 
     public function provideTags()
     {
-        return array(
-            array(0, 'property_info.list_extractor'),
-            array(1, 'property_info.type_extractor'),
-            array(2, 'property_info.description_extractor'),
-            array(3, 'property_info.access_extractor'),
-            array(4, 'property_info.initializable_extractor'),
-        );
+        return [
+            [0, 'property_info.list_extractor'],
+            [1, 'property_info.type_extractor'],
+            [2, 'property_info.description_extractor'],
+            [3, 'property_info.access_extractor'],
+            [4, 'property_info.initializable_extractor'],
+        ];
     }
 
     public function testReturningEmptyArrayWhenNoService()
     {
         $container = new ContainerBuilder();
         $propertyInfoExtractorDefinition = $container->register('property_info')
-            ->setArguments(array(array(), array(), array(), array(), array()));
+            ->setArguments([[], [], [], [], []]);
 
         $propertyInfoPass = new PropertyInfoPass();
         $propertyInfoPass->process($container);
 
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(0));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(1));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(2));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(3));
-        $this->assertEquals(new IteratorArgument(array()), $propertyInfoExtractorDefinition->getArgument(4));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(0));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(1));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(2));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(3));
+        $this->assertEquals(new IteratorArgument([]), $propertyInfoExtractorDefinition->getArgument(4));
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
index d4f514bd7ee8..930dc6e24c9b 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
@@ -51,50 +51,50 @@ public function testParamTagTypeIsOmitted()
      */
     public function testExtractTypesWithNoPrefixes($property, array $type = null)
     {
-        $noPrefixExtractor = new PhpDocExtractor(null, array(), array(), array());
+        $noPrefixExtractor = new PhpDocExtractor(null, [], [], []);
 
         $this->assertEquals($type, $noPrefixExtractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property));
     }
 
     public function typesProvider()
     {
-        return array(
-            array('foo', null, 'Short description.', 'Long description.'),
-            array('bar', array(new Type(Type::BUILTIN_TYPE_STRING)), 'This is bar', null),
-            array('baz', array(new Type(Type::BUILTIN_TYPE_INT)), 'Should be used.', null),
-            array('foo2', array(new Type(Type::BUILTIN_TYPE_FLOAT)), null, null),
-            array('foo3', array(new Type(Type::BUILTIN_TYPE_CALLABLE)), null, null),
-            array('foo4', array(new Type(Type::BUILTIN_TYPE_NULL)), null, null),
-            array('foo5', null, null, null),
-            array(
+        return [
+            ['foo', null, 'Short description.', 'Long description.'],
+            ['bar', [new Type(Type::BUILTIN_TYPE_STRING)], 'This is bar', null],
+            ['baz', [new Type(Type::BUILTIN_TYPE_INT)], 'Should be used.', null],
+            ['foo2', [new Type(Type::BUILTIN_TYPE_FLOAT)], null, null],
+            ['foo3', [new Type(Type::BUILTIN_TYPE_CALLABLE)], null, null],
+            ['foo4', [new Type(Type::BUILTIN_TYPE_NULL)], null, null],
+            ['foo5', null, null, null],
+            [
                 'files',
-                array(
+                [
                     new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'SplFileInfo')),
                     new Type(Type::BUILTIN_TYPE_RESOURCE),
-                ),
+                ],
                 null,
                 null,
-            ),
-            array('bal', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')), null, null),
-            array('parent', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')), null, null),
-            array('collection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('nestedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))), null, null),
-            array('mixedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)), null, null),
-            array('a', array(new Type(Type::BUILTIN_TYPE_INT)), 'A.', null),
-            array('b', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')), 'B.', null),
-            array('c', array(new Type(Type::BUILTIN_TYPE_BOOL, true)), null, null),
-            array('d', array(new Type(Type::BUILTIN_TYPE_BOOL)), null, null),
-            array('e', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))), null, null),
-            array('f', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('g', array(new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)), 'Nullable array.', null),
-            array('h', array(new Type(Type::BUILTIN_TYPE_STRING, true)), null, null),
-            array('i', array(new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)), null, null),
-            array('j', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')), null, null),
-            array('donotexist', null, null, null),
-            array('staticGetter', null, null, null),
-            array('staticSetter', null, null, null),
-            array('emptyVar', null, null, null),
-        );
+            ],
+            ['bal', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')], null, null],
+            ['parent', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], null, null],
+            ['collection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['nestedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))], null, null],
+            ['mixedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)], null, null],
+            ['a', [new Type(Type::BUILTIN_TYPE_INT)], 'A.', null],
+            ['b', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], 'B.', null],
+            ['c', [new Type(Type::BUILTIN_TYPE_BOOL, true)], null, null],
+            ['d', [new Type(Type::BUILTIN_TYPE_BOOL)], null, null],
+            ['e', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))], null, null],
+            ['f', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['g', [new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)], 'Nullable array.', null],
+            ['h', [new Type(Type::BUILTIN_TYPE_STRING, true)], null, null],
+            ['i', [new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)], null, null],
+            ['j', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')], null, null],
+            ['donotexist', null, null, null],
+            ['staticGetter', null, null, null],
+            ['staticSetter', null, null, null],
+            ['emptyVar', null, null, null],
+        ];
     }
 
     /**
@@ -111,23 +111,23 @@ public function testExtractCollection($property, array $type = null, $shortDescr
 
     public function provideCollectionTypes()
     {
-        return array(
-            array('iteratorCollection', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Iterator', true, null, new Type(Type::BUILTIN_TYPE_STRING))), null, null),
-            array('iteratorCollectionWithKey', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Iterator', true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))), null, null),
-            array(
+        return [
+            ['iteratorCollection', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Iterator', true, null, new Type(Type::BUILTIN_TYPE_STRING))], null, null],
+            ['iteratorCollectionWithKey', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Iterator', true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))], null, null],
+            [
                 'nestedIterators',
-                array(new Type(
+                [new Type(
                     Type::BUILTIN_TYPE_OBJECT,
                     false,
                     'Iterator',
                     true,
                     new Type(Type::BUILTIN_TYPE_INT),
                     new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Iterator', true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))
-                )),
+                )],
                 null,
                 null,
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -135,89 +135,89 @@ public function provideCollectionTypes()
      */
     public function testExtractTypesWithCustomPrefixes($property, array $type = null)
     {
-        $customExtractor = new PhpDocExtractor(null, array('add', 'remove'), array('is', 'can'));
+        $customExtractor = new PhpDocExtractor(null, ['add', 'remove'], ['is', 'can']);
 
         $this->assertEquals($type, $customExtractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Dummy', $property));
     }
 
     public function typesWithCustomPrefixesProvider()
     {
-        return array(
-            array('foo', null, 'Short description.', 'Long description.'),
-            array('bar', array(new Type(Type::BUILTIN_TYPE_STRING)), 'This is bar', null),
-            array('baz', array(new Type(Type::BUILTIN_TYPE_INT)), 'Should be used.', null),
-            array('foo2', array(new Type(Type::BUILTIN_TYPE_FLOAT)), null, null),
-            array('foo3', array(new Type(Type::BUILTIN_TYPE_CALLABLE)), null, null),
-            array('foo4', array(new Type(Type::BUILTIN_TYPE_NULL)), null, null),
-            array('foo5', null, null, null),
-            array(
+        return [
+            ['foo', null, 'Short description.', 'Long description.'],
+            ['bar', [new Type(Type::BUILTIN_TYPE_STRING)], 'This is bar', null],
+            ['baz', [new Type(Type::BUILTIN_TYPE_INT)], 'Should be used.', null],
+            ['foo2', [new Type(Type::BUILTIN_TYPE_FLOAT)], null, null],
+            ['foo3', [new Type(Type::BUILTIN_TYPE_CALLABLE)], null, null],
+            ['foo4', [new Type(Type::BUILTIN_TYPE_NULL)], null, null],
+            ['foo5', null, null, null],
+            [
                 'files',
-                array(
+                [
                     new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'SplFileInfo')),
                     new Type(Type::BUILTIN_TYPE_RESOURCE),
-                ),
+                ],
                 null,
                 null,
-            ),
-            array('bal', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')), null, null),
-            array('parent', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')), null, null),
-            array('collection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('nestedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))), null, null),
-            array('mixedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)), null, null),
-            array('a', null, 'A.', null),
-            array('b', null, 'B.', null),
-            array('c', array(new Type(Type::BUILTIN_TYPE_BOOL, true)), null, null),
-            array('d', array(new Type(Type::BUILTIN_TYPE_BOOL)), null, null),
-            array('e', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))), null, null),
-            array('f', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('g', array(new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)), 'Nullable array.', null),
-            array('h', array(new Type(Type::BUILTIN_TYPE_STRING, true)), null, null),
-            array('i', array(new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)), null, null),
-            array('j', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')), null, null),
-            array('donotexist', null, null, null),
-            array('staticGetter', null, null, null),
-            array('staticSetter', null, null, null),
-        );
+            ],
+            ['bal', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')], null, null],
+            ['parent', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], null, null],
+            ['collection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['nestedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))], null, null],
+            ['mixedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)], null, null],
+            ['a', null, 'A.', null],
+            ['b', null, 'B.', null],
+            ['c', [new Type(Type::BUILTIN_TYPE_BOOL, true)], null, null],
+            ['d', [new Type(Type::BUILTIN_TYPE_BOOL)], null, null],
+            ['e', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))], null, null],
+            ['f', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['g', [new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)], 'Nullable array.', null],
+            ['h', [new Type(Type::BUILTIN_TYPE_STRING, true)], null, null],
+            ['i', [new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)], null, null],
+            ['j', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')], null, null],
+            ['donotexist', null, null, null],
+            ['staticGetter', null, null, null],
+            ['staticSetter', null, null, null],
+        ];
     }
 
     public function typesWithNoPrefixesProvider()
     {
-        return array(
-            array('foo', null, 'Short description.', 'Long description.'),
-            array('bar', array(new Type(Type::BUILTIN_TYPE_STRING)), 'This is bar', null),
-            array('baz', array(new Type(Type::BUILTIN_TYPE_INT)), 'Should be used.', null),
-            array('foo2', array(new Type(Type::BUILTIN_TYPE_FLOAT)), null, null),
-            array('foo3', array(new Type(Type::BUILTIN_TYPE_CALLABLE)), null, null),
-            array('foo4', array(new Type(Type::BUILTIN_TYPE_NULL)), null, null),
-            array('foo5', null, null, null),
-            array(
+        return [
+            ['foo', null, 'Short description.', 'Long description.'],
+            ['bar', [new Type(Type::BUILTIN_TYPE_STRING)], 'This is bar', null],
+            ['baz', [new Type(Type::BUILTIN_TYPE_INT)], 'Should be used.', null],
+            ['foo2', [new Type(Type::BUILTIN_TYPE_FLOAT)], null, null],
+            ['foo3', [new Type(Type::BUILTIN_TYPE_CALLABLE)], null, null],
+            ['foo4', [new Type(Type::BUILTIN_TYPE_NULL)], null, null],
+            ['foo5', null, null, null],
+            [
                 'files',
-                array(
+                [
                     new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'SplFileInfo')),
                     new Type(Type::BUILTIN_TYPE_RESOURCE),
-                ),
+                ],
                 null,
                 null,
-            ),
-            array('bal', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')), null, null),
-            array('parent', array(new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')), null, null),
-            array('collection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))), null, null),
-            array('nestedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))), null, null),
-            array('mixedCollection', array(new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)), null, null),
-            array('a', null, 'A.', null),
-            array('b', null, 'B.', null),
-            array('c', null, null, null),
-            array('d', null, null, null),
-            array('e', null, null, null),
-            array('f', null, null, null),
-            array('g', array(new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)), 'Nullable array.', null),
-            array('h', array(new Type(Type::BUILTIN_TYPE_STRING, true)), null, null),
-            array('i', array(new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)), null, null),
-            array('j', array(new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')), null, null),
-            array('donotexist', null, null, null),
-            array('staticGetter', null, null, null),
-            array('staticSetter', null, null, null),
-        );
+            ],
+            ['bal', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime')], null, null],
+            ['parent', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], null, null],
+            ['collection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
+            ['nestedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING, false)))], null, null],
+            ['mixedCollection', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, null)], null, null],
+            ['a', null, 'A.', null],
+            ['b', null, 'B.', null],
+            ['c', null, null, null],
+            ['d', null, null, null],
+            ['e', null, null, null],
+            ['f', null, null, null],
+            ['g', [new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)], 'Nullable array.', null],
+            ['h', [new Type(Type::BUILTIN_TYPE_STRING, true)], null, null],
+            ['i', [new Type(Type::BUILTIN_TYPE_STRING, true), new Type(Type::BUILTIN_TYPE_INT, true)], null, null],
+            ['j', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'DateTime')], null, null],
+            ['donotexist', null, null, null],
+            ['staticGetter', null, null, null],
+            ['staticSetter', null, null, null],
+        ];
     }
 
     public function testReturnNullOnEmptyDocBlock()
@@ -227,17 +227,17 @@ public function testReturnNullOnEmptyDocBlock()
 
     public function dockBlockFallbackTypesProvider()
     {
-        return array(
-            'pub' => array(
-                'pub', array(new Type(Type::BUILTIN_TYPE_STRING)),
-            ),
-            'protAcc' => array(
-                'protAcc', array(new Type(Type::BUILTIN_TYPE_INT)),
-            ),
-            'protMut' => array(
-                'protMut', array(new Type(Type::BUILTIN_TYPE_BOOL)),
-            ),
-        );
+        return [
+            'pub' => [
+                'pub', [new Type(Type::BUILTIN_TYPE_STRING)],
+            ],
+            'protAcc' => [
+                'protAcc', [new Type(Type::BUILTIN_TYPE_INT)],
+            ],
+            'protMut' => [
+                'protMut', [new Type(Type::BUILTIN_TYPE_BOOL)],
+            ],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
index c9e6028d8760..e58c70d41d70 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
@@ -284,13 +284,13 @@ public function testIsInitializable(string $class, string $property, bool $expec
 
     public function getInitializableProperties(): array
     {
-        return array(
-            array(Php71Dummy::class, 'string', true),
-            array(Php71Dummy::class, 'intPrivate', true),
-            array(Php71Dummy::class, 'notExist', false),
-            array(Php71DummyExtended2::class, 'intWithAccessor', true),
-            array(Php71DummyExtended2::class, 'intPrivate', false),
-            array(NotInstantiable::class, 'foo', false),
-        );
+        return [
+            [Php71Dummy::class, 'string', true],
+            [Php71Dummy::class, 'intPrivate', true],
+            [Php71Dummy::class, 'notExist', false],
+            [Php71DummyExtended2::class, 'intWithAccessor', true],
+            [Php71DummyExtended2::class, 'intPrivate', false],
+            [NotInstantiable::class, 'foo', false],
+        ];
     }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/DummyExtractor.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/DummyExtractor.php
index 3877f33415e0..9003b2fa38a6 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/DummyExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/DummyExtractor.php
@@ -74,7 +74,7 @@ public function getProperties($class, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function isInitializable(string $class, string $property, array $context = array()): ?bool
+    public function isInitializable(string $class, string $property, array $context = []): ?bool
     {
         return true;
     }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NullExtractor.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NullExtractor.php
index 6cf31ff2b439..6878db7cf3b9 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NullExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/NullExtractor.php
@@ -80,7 +80,7 @@ public function getProperties($class, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function isInitializable(string $class, string $property, array $context = array()): ?bool
+    public function isInitializable(string $class, string $property, array $context = []): ?bool
     {
         return null;
     }
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
index bbf57cfca149..2d12dcb968ec 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
@@ -32,7 +32,7 @@ class PhpMatcherDumper extends MatcherDumper
     /**
      * @var ExpressionFunctionProviderInterface[]
      */
-    private $expressionLanguageProviders = array();
+    private $expressionLanguageProviders = [];
 
     /**
      * Dumps a set of routes to a PHP class.
@@ -46,12 +46,12 @@ class PhpMatcherDumper extends MatcherDumper
      *
      * @return string A PHP class representing the matcher class
      */
-    public function dump(array $options = array())
+    public function dump(array $options = [])
     {
-        $options = array_replace(array(
+        $options = array_replace([
             'class' => 'ProjectUrlMatcher',
             'base_class' => 'Symfony\\Component\\Routing\\Matcher\\UrlMatcher',
-        ), $options);
+        ], $options);
 
         // trailing slash support is only enabled if we know how to redirect the user
         $interfaces = class_implements($options['base_class']);
@@ -98,7 +98,7 @@ private function generateProperties(): string
                 $host = '/'.strtr(strrev($host), '}.{', '(/)');
             }
 
-            $routes->addRoute($host ?: '/(.*)', array($name, $route));
+            $routes->addRoute($host ?: '/(.*)', [$name, $route]);
         }
 
         if ($matchHost) {
@@ -111,7 +111,7 @@ private function generateProperties(): string
 
         list($staticRoutes, $dynamicRoutes) = $this->groupStaticRoutes($routes);
 
-        $conditions = array(null);
+        $conditions = [null];
         $code .= $this->compileStaticRoutes($staticRoutes, $conditions);
         $chunkLimit = \count($dynamicRoutes);
 
@@ -154,7 +154,7 @@ private function generateProperties(): string
      */
     private function groupStaticRoutes(RouteCollection $collection): array
     {
-        $staticRoutes = $dynamicRegex = array();
+        $staticRoutes = $dynamicRegex = [];
         $dynamicRoutes = new RouteCollection();
 
         foreach ($collection->all() as $name => $route) {
@@ -175,20 +175,20 @@ private function groupStaticRoutes(RouteCollection $collection): array
                 }
                 foreach ($dynamicRegex as list($hostRx, $rx)) {
                     if (preg_match($rx, $url) && (!$host || !$hostRx || preg_match($hostRx, $host))) {
-                        $dynamicRegex[] = array($hostRegex, $regex);
+                        $dynamicRegex[] = [$hostRegex, $regex];
                         $dynamicRoutes->add($name, $route);
                         continue 2;
                     }
                 }
 
-                $staticRoutes[$url][$name] = array($route, $hasTrailingSlash);
+                $staticRoutes[$url][$name] = [$route, $hasTrailingSlash];
             } else {
-                $dynamicRegex[] = array($hostRegex, $regex);
+                $dynamicRegex[] = [$hostRegex, $regex];
                 $dynamicRoutes->add($name, $route);
             }
         }
 
-        return array($staticRoutes, $dynamicRoutes);
+        return [$staticRoutes, $dynamicRoutes];
     }
 
     /**
@@ -245,14 +245,14 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
             return '';
         }
         $code = '';
-        $state = (object) array(
+        $state = (object) [
             'regex' => '',
             'routes' => '',
             'mark' => 0,
             'markTail' => 0,
-            'hostVars' => array(),
-            'vars' => array(),
-        );
+            'hostVars' => [],
+            'vars' => [],
+        ];
         $state->getVars = static function ($m) use ($state) {
             if ('_route' === $m[1]) {
                 return '?:';
@@ -265,13 +265,13 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
 
         $chunkSize = 0;
         $prev = null;
-        $perModifiers = array();
+        $perModifiers = [];
         foreach ($collection->all() as $name => $route) {
             preg_match('#[a-zA-Z]*$#', $route->compile()->getRegex(), $rx);
             if ($chunkLimit < ++$chunkSize || $prev !== $rx[0] && $route->compile()->getPathVariables()) {
                 $chunkSize = 1;
                 $routes = new RouteCollection();
-                $perModifiers[] = array($rx[0], $routes);
+                $perModifiers[] = [$rx[0], $routes];
                 $prev = $rx[0];
             }
             $routes->add($name, $route);
@@ -279,12 +279,12 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
 
         foreach ($perModifiers as list($modifiers, $routes)) {
             $prev = false;
-            $perHost = array();
+            $perHost = [];
             foreach ($routes->all() as $name => $route) {
                 $regex = $route->compile()->getHostRegex();
                 if ($prev !== $regex) {
                     $routes = new RouteCollection();
-                    $perHost[] = array($regex, $routes);
+                    $perHost[] = [$regex, $routes];
                     $prev = $regex;
                 }
                 $routes->add($name, $route);
@@ -299,12 +299,12 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
                 if ($matchHost) {
                     if ($hostRegex) {
                         preg_match('#^.\^(.*)\$.[a-zA-Z]*$#', $hostRegex, $rx);
-                        $state->vars = array();
+                        $state->vars = [];
                         $hostRegex = '(?i:'.preg_replace_callback('#\?P<([^>]++)>#', $state->getVars, $rx[1]).')\.';
                         $state->hostVars = $state->vars;
                     } else {
                         $hostRegex = '(?:(?:[^./]*+\.)++)';
-                        $state->hostVars = array();
+                        $state->hostVars = [];
                     }
                     $state->mark += \strlen($rx = ($prev ? ')' : '')."|{$hostRegex}(?");
                     $code .= "\n        .".self::export($rx);
@@ -316,14 +316,14 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
                 foreach ($routes->all() as $name => $route) {
                     preg_match('#^.\^(.*)\$.[a-zA-Z]*$#', $route->compile()->getRegex(), $rx);
 
-                    $state->vars = array();
+                    $state->vars = [];
                     $regex = preg_replace_callback('#\?P<([^>]++)>#', $state->getVars, $rx[1]);
                     if ($hasTrailingSlash = '/' !== $regex && '/' === $regex[-1]) {
                         $regex = substr($regex, 0, -1);
                     }
                     $hasTrailingVar = (bool) preg_match('#\{\w+\}/?$#', $route->getPath());
 
-                    $tree->addRoute($regex, array($name, $regex, $state->vars, $route, $hasTrailingSlash, $hasTrailingVar));
+                    $tree->addRoute($regex, [$name, $regex, $state->vars, $route, $hasTrailingSlash, $hasTrailingVar]);
                 }
 
                 $code .= $this->compileStaticPrefixCollection($tree, $state, 0, $conditions);
@@ -413,7 +413,7 @@ private function compileRoute(Route $route, string $name, $vars, bool $hasTraili
         }
 
         if ($condition = $route->getCondition()) {
-            $condition = $this->getExpressionLanguage()->compile($condition, array('context', 'request'));
+            $condition = $this->getExpressionLanguage()->compile($condition, ['context', 'request']);
             $condition = $conditions[$condition] ?? $conditions[$condition] = (false !== strpos($condition, '$request') ? 1 : -1) * \count($conditions);
         } else {
             $condition = 'null';
@@ -421,7 +421,7 @@ private function compileRoute(Route $route, string $name, $vars, bool $hasTraili
 
         return sprintf(
             "    array(%s, %s, %s, %s, %s, %s, %s),\n",
-            self::export(array('_route' => $name) + $defaults),
+            self::export(['_route' => $name] + $defaults),
             self::export($vars),
             self::export(array_flip($route->getMethods()) ?: null),
             self::export(array_flip($route->getSchemes()) ?: null),
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherTrait.php b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherTrait.php
index 40d6badf3b5d..7e370b9d20a4 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherTrait.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherTrait.php
@@ -24,14 +24,14 @@
 trait PhpMatcherTrait
 {
     private $matchHost = false;
-    private $staticRoutes = array();
-    private $regexpList = array();
-    private $dynamicRoutes = array();
+    private $staticRoutes = [];
+    private $regexpList = [];
+    private $dynamicRoutes = [];
     private $checkCondition;
 
     public function match($pathinfo)
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         if ($ret = $this->doMatch($pathinfo, $allow, $allowSchemes)) {
             return $ret;
         }
@@ -41,7 +41,7 @@ public function match($pathinfo)
         if (!$this instanceof RedirectableUrlMatcherInterface) {
             throw new ResourceNotFoundException();
         }
-        if (!\in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+        if (!\in_array($this->context->getMethod(), ['HEAD', 'GET'], true)) {
             // no-op
         } elseif ($allowSchemes) {
             redirect_scheme:
@@ -67,9 +67,9 @@ public function match($pathinfo)
         throw new ResourceNotFoundException();
     }
 
-    private function doMatch(string $pathinfo, array &$allow = array(), array &$allowSchemes = array()): array
+    private function doMatch(string $pathinfo, array &$allow = [], array &$allowSchemes = []): array
     {
-        $allow = $allowSchemes = array();
+        $allow = $allowSchemes = [];
         $pathinfo = rawurldecode($pathinfo) ?: '/';
         $trimmedPathinfo = rtrim($pathinfo, '/') ?: '/';
         $context = $this->context;
@@ -84,14 +84,14 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
         }
         $supportsRedirections = 'GET' === $canonicalMethod && $this instanceof RedirectableUrlMatcherInterface;
 
-        foreach ($this->staticRoutes[$trimmedPathinfo] ?? array() as list($ret, $requiredHost, $requiredMethods, $requiredSchemes, $hasTrailingSlash, , $condition)) {
+        foreach ($this->staticRoutes[$trimmedPathinfo] ?? [] as list($ret, $requiredHost, $requiredMethods, $requiredSchemes, $hasTrailingSlash, , $condition)) {
             if ($condition && !($this->checkCondition)($condition, $context, 0 < $condition ? $request ?? $request = $this->request ?: $this->createRequest($pathinfo) : null)) {
                 continue;
             }
 
             if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                 if ($supportsRedirections && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                    return $allow = $allowSchemes = array();
+                    return $allow = $allowSchemes = [];
                 }
                 continue;
             }
@@ -140,7 +140,7 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
 
                     if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                         if ($supportsRedirections && (!$requiredMethods || isset($requiredMethods['GET']))) {
-                            return $allow = $allowSchemes = array();
+                            return $allow = $allowSchemes = [];
                         }
                         if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
                             continue;
@@ -177,6 +177,6 @@ private function doMatch(string $pathinfo, array &$allow = array(), array &$allo
             throw new NoConfigurationException();
         }
 
-        return array();
+        return [];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php b/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
index 45464c3a90d5..f38e30de98fc 100644
--- a/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Generator/Dumper/PhpGeneratorDumperTest.php
@@ -73,10 +73,10 @@ public function testDumpWithRoutes()
 
         $projectUrlGenerator = new \ProjectUrlGenerator(new RequestContext('/app.php'));
 
-        $absoluteUrlWithParameter = $projectUrlGenerator->generate('Test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL);
-        $absoluteUrlWithoutParameter = $projectUrlGenerator->generate('Test2', array(), UrlGeneratorInterface::ABSOLUTE_URL);
-        $relativeUrlWithParameter = $projectUrlGenerator->generate('Test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_PATH);
-        $relativeUrlWithoutParameter = $projectUrlGenerator->generate('Test2', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $absoluteUrlWithParameter = $projectUrlGenerator->generate('Test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL);
+        $absoluteUrlWithoutParameter = $projectUrlGenerator->generate('Test2', [], UrlGeneratorInterface::ABSOLUTE_URL);
+        $relativeUrlWithParameter = $projectUrlGenerator->generate('Test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_PATH);
+        $relativeUrlWithoutParameter = $projectUrlGenerator->generate('Test2', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('http://localhost/app.php/testing/bar', $absoluteUrlWithParameter);
         $this->assertEquals('http://localhost/app.php/testing2', $absoluteUrlWithoutParameter);
@@ -90,9 +90,9 @@ public function testDumpWithSimpleLocalizedRoutes()
         $this->routeCollection->add('test.en', (new Route('/testing/is/fun'))->setDefault('_locale', 'en')->setDefault('_canonical_route', 'test'));
         $this->routeCollection->add('test.nl', (new Route('/testen/is/leuk'))->setDefault('_locale', 'nl')->setDefault('_canonical_route', 'test'));
 
-        $code = $this->generatorDumper->dump(array(
+        $code = $this->generatorDumper->dump([
             'class' => 'SimpleLocalizedProjectUrlGenerator',
-        ));
+        ]);
         file_put_contents($this->testTmpFilepath, $code);
         include $this->testTmpFilepath;
 
@@ -100,7 +100,7 @@ public function testDumpWithSimpleLocalizedRoutes()
         $projectUrlGenerator = new \SimpleLocalizedProjectUrlGenerator($context, null, 'en');
 
         $urlWithDefaultLocale = $projectUrlGenerator->generate('test');
-        $urlWithSpecifiedLocale = $projectUrlGenerator->generate('test', array('_locale' => 'nl'));
+        $urlWithSpecifiedLocale = $projectUrlGenerator->generate('test', ['_locale' => 'nl']);
         $context->setParameter('_locale', 'en');
         $urlWithEnglishContext = $projectUrlGenerator->generate('test');
         $context->setParameter('_locale', 'nl');
@@ -127,9 +127,9 @@ public function testDumpWithRouteNotFoundLocalizedRoutes()
     {
         $this->routeCollection->add('test.en', (new Route('/testing/is/fun'))->setDefault('_locale', 'en')->setDefault('_canonical_route', 'test'));
 
-        $code = $this->generatorDumper->dump(array(
+        $code = $this->generatorDumper->dump([
             'class' => 'RouteNotFoundLocalizedProjectUrlGenerator',
-        ));
+        ]);
         file_put_contents($this->testTmpFilepath, $code);
         include $this->testTmpFilepath;
 
@@ -143,9 +143,9 @@ public function testDumpWithFallbackLocaleLocalizedRoutes()
         $this->routeCollection->add('test.nl', (new Route('/testen/is/leuk'))->setDefault('_canonical_route', 'test'));
         $this->routeCollection->add('test.fr', (new Route('/tester/est/amusant'))->setDefault('_canonical_route', 'test'));
 
-        $code = $this->generatorDumper->dump(array(
+        $code = $this->generatorDumper->dump([
             'class' => 'FallbackLocaleLocalizedProjectUrlGenerator',
-        ));
+        ]);
         file_put_contents($th
10000
is->testTmpFilepath, $code);
         include $this->testTmpFilepath;
 
@@ -156,7 +156,7 @@ public function testDumpWithFallbackLocaleLocalizedRoutes()
         // test with context _locale
         $this->assertEquals('/app.php/testing/is/fun', $projectUrlGenerator->generate('test'));
         // test with parameters _locale
-        $this->assertEquals('/app.php/testen/is/leuk', $projectUrlGenerator->generate('test', array('_locale' => 'nl_BE')));
+        $this->assertEquals('/app.php/testen/is/leuk', $projectUrlGenerator->generate('test', ['_locale' => 'nl_BE']));
 
         $projectUrlGenerator = new \FallbackLocaleLocalizedProjectUrlGenerator(new RequestContext('/app.php'), null, 'fr_CA');
         // test with default locale
@@ -171,18 +171,18 @@ public function testDumpWithTooManyRoutes()
         }
         $this->routeCollection->add('Test2', new Route('/testing2'));
 
-        file_put_contents($this->largeTestTmpFilepath, $this->generatorDumper->dump(array(
+        file_put_contents($this->largeTestTmpFilepath, $this->generatorDumper->dump([
             'class' => 'ProjectLargeUrlGenerator',
-        )));
+        ]));
         $this->routeCollection = $this->generatorDumper = null;
         include $this->largeTestTmpFilepath;
 
         $projectUrlGenerator = new \ProjectLargeUrlGenerator(new RequestContext('/app.php'));
 
-        $absoluteUrlWithParameter = $projectUrlGenerator->generate('Test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_URL);
-        $absoluteUrlWithoutParameter = $projectUrlGenerator->generate('Test2', array(), UrlGeneratorInterface::ABSOLUTE_URL);
-        $relativeUrlWithParameter = $projectUrlGenerator->generate('Test', array('foo' => 'bar'), UrlGeneratorInterface::ABSOLUTE_PATH);
-        $relativeUrlWithoutParameter = $projectUrlGenerator->generate('Test2', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $absoluteUrlWithParameter = $projectUrlGenerator->generate('Test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_URL);
+        $absoluteUrlWithoutParameter = $projectUrlGenerator->generate('Test2', [], UrlGeneratorInterface::ABSOLUTE_URL);
+        $relativeUrlWithParameter = $projectUrlGenerator->generate('Test', ['foo' => 'bar'], UrlGeneratorInterface::ABSOLUTE_PATH);
+        $relativeUrlWithoutParameter = $projectUrlGenerator->generate('Test2', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('http://localhost/app.php/testing/bar', $absoluteUrlWithParameter);
         $this->assertEquals('http://localhost/app.php/testing2', $absoluteUrlWithoutParameter);
@@ -195,12 +195,12 @@ public function testDumpWithTooManyRoutes()
      */
     public function testDumpWithoutRoutes()
     {
-        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(array('class' => 'WithoutRoutesUrlGenerator')));
+        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(['class' => 'WithoutRoutesUrlGenerator']));
         include $this->testTmpFilepath;
 
         $projectUrlGenerator = new \WithoutRoutesUrlGenerator(new RequestContext('/app.php'));
 
-        $projectUrlGenerator->generate('Test', array());
+        $projectUrlGenerator->generate('Test', []);
     }
 
     /**
@@ -210,45 +210,45 @@ public function testGenerateNonExistingRoute()
     {
         $this->routeCollection->add('Test', new Route('/test'));
 
-        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(array('class' => 'NonExistingRoutesUrlGenerator')));
+        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(['class' => 'NonExistingRoutesUrlGenerator']));
         include $this->testTmpFilepath;
 
         $projectUrlGenerator = new \NonExistingRoutesUrlGenerator(new RequestContext());
-        $url = $projectUrlGenerator->generate('NonExisting', array());
+        $url = $projectUrlGenerator->generate('NonExisting', []);
     }
 
     public function testDumpForRouteWithDefaults()
     {
-        $this->routeCollection->add('Test', new Route('/testing/{foo}', array('foo' => 'bar')));
+        $this->routeCollection->add('Test', new Route('/testing/{foo}', ['foo' => 'bar']));
 
-        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(array('class' => 'DefaultRoutesUrlGenerator')));
+        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(['class' => 'DefaultRoutesUrlGenerator']));
         include $this->testTmpFilepath;
 
         $projectUrlGenerator = new \DefaultRoutesUrlGenerator(new RequestContext());
-        $url = $projectUrlGenerator->generate('Test', array());
+        $url = $projectUrlGenerator->generate('Test', []);
 
         $this->assertEquals('/testing', $url);
     }
 
     public function testDumpWithSchemeRequirement()
     {
-        $this->routeCollection->add('Test1', new Route('/testing', array(), array(), array(), '', array('ftp', 'https')));
+        $this->routeCollection->add('Test1', new Route('/testing', [], [], [], '', ['ftp', 'https']));
 
-        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(array('class' => 'SchemeUrlGenerator')));
+        file_put_contents($this->testTmpFilepath, $this->generatorDumper->dump(['class' => 'SchemeUrlGenerator']));
         include $this->testTmpFilepath;
 
         $projectUrlGenerator = new \SchemeUrlGenerator(new RequestContext('/app.php'));
 
-        $absoluteUrl = $projectUrlGenerator->generate('Test1', array(), UrlGeneratorInterface::ABSOLUTE_URL);
-        $relativeUrl = $projectUrlGenerator->generate('Test1', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $absoluteUrl = $projectUrlGenerator->generate('Test1', [], UrlGeneratorInterface::ABSOLUTE_URL);
+        $relativeUrl = $projectUrlGenerator->generate('Test1', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('ftp://localhost/app.php/testing', $absoluteUrl);
         $this->assertEquals('ftp://localhost/app.php/testing', $relativeUrl);
 
         $projectUrlGenerator = new \SchemeUrlGenerator(new RequestContext('/app.php', 'GET', 'localhost', 'https'));
 
-        $absoluteUrl = $projectUrlGenerator->generate('Test1', array(), UrlGeneratorInterface::ABSOLUTE_URL);
-        $relativeUrl = $projectUrlGenerator->generate('Test1', array(), UrlGeneratorInterface::ABSOLUTE_PATH);
+        $absoluteUrl = $projectUrlGenerator->generate('Test1', [], UrlGeneratorInterface::ABSOLUTE_URL);
+        $relativeUrl = $projectUrlGenerator->generate('Test1', [], UrlGeneratorInterface::ABSOLUTE_PATH);
 
         $this->assertEquals('https://localhost/app.php/testing', $absoluteUrl);
         $this->assertEquals('/app.php/testing', $relativeUrl);
diff --git a/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
index f51d48ea18f6..296bbe4226b8 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
@@ -311,7 +311,7 @@ public function testImportRouteWithNoTrailingSlash()
      */
     public function testRequirementsWithoutPlaceholderName()
     {
-        $loader = new YamlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures']));
         $loader->load('requirements_without_placeholder_name.yml');
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php b/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
index e435ba3d1a8b..319d2d866ccd 100644
--- a/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
+++ b/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
@@ -26,9 +26,9 @@ class TraceableAccessDecisionManager implements AccessDecisionManagerInterface
 {
     private $manager;
     private $strategy;
-    private $voters = array();
-    private $decisionLog = array(); // All decision logs
-    private $currentLog = array();  // Logs being filled in
+    private $voters = [];
+    private $decisionLog = []; // All decision logs
+    private $currentLog = [];  // Logs being filled in
 
     public function __construct(AccessDecisionManagerInterface $manager)
     {
@@ -50,11 +50,11 @@ public function __construct(AccessDecisionManagerInterface $manager)
      */
     public function decide(TokenInterface $token, array $attributes, $object = null)
     {
-        $currentDecisionLog = array(
+        $currentDecisionLog = [
             'attributes' => $attributes,
             'object' => $object,
-            'voterDetails' => array(),
-        );
+            'voterDetails' => [],
+        ];
 
         $this->currentLog[] = &$currentDecisionLog;
 
@@ -77,11 +77,11 @@ public function decide(TokenInterface $token, array $attributes, $object = null)
     public function addVoterVote(VoterInterface $voter, array $attributes, int $vote)
     {
         $currentLogIndex = \count($this->currentLog) - 1;
-        $this->currentLog[$currentLogIndex]['voterDetails'][] = array(
+        $this->currentLog[$currentLogIndex]['voterDetails'][] = [
             'voter' => $voter,
             'attributes' => $attributes,
             'vote' => $vote,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php b/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php
index 131f5efe2051..d9530e071ce7 100644
--- a/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php
+++ b/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php
@@ -96,7 +96,7 @@ private function getVariables(TokenInterface $token, $subject)
             $roles = $token->getRoles();
         }
 
-        $variables = array(
+        $variables = [
             'token' => $token,
             'user' => $token->getUser(),
             'object' => $subject,
@@ -104,7 +104,7 @@ private function getVariables(TokenInterface $token, $subject)
             'roles' => array_map(function ($role) { return $role->getRole(); }, $roles),
             'trust_resolver' => $this->trustResolver,
             'auth_checker' => $this->authChecker,
-        );
+        ];
 
         // this is mainly to propose a better experience when the expression is used
         // in an access control rule, as the developer does not know that it's going
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php
index 59eb1ab5cb71..2950d3feff7d 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/ExpressionLanguageTest.php
@@ -35,10 +35,10 @@ public function testIsAuthenticated($token, $expression, $result)
         $trustResolver = new AuthenticationTrustResolver();
         $tokenStorage = new TokenStorage();
         $tokenStorage->setToken($token);
-        $accessDecisionManager = new AccessDecisionManager(array(new RoleVoter()));
+        $accessDecisionManager = new AccessDecisionManager([new RoleVoter()]);
         $authChecker = new AuthorizationChecker($tokenStorage, $this->getMockBuilder(AuthenticationManagerInterface::class)->getMock(), $accessDecisionManager);
 
-        $context = array();
+        $context = [];
         $context['trust_resolver'] = $trustResolver;
         $context['auth_checker'] = $authChecker;
         $context['token'] = $token;
@@ -48,7 +48,7 @@ public function testIsAuthenticated($token, $expression, $result)
 
     public function provider()
     {
-        $roles = array('ROLE_USER', 'ROLE_ADMIN');
+        $roles = ['ROLE_USER', 'ROLE_ADMIN'];
         $user = new User('username', 'password', $roles);
 
         $noToken = null;
@@ -56,57 +56,57 @@ public function provider()
         $rememberMeToken = new RememberMeToken($user, 'providerkey', 'firewall');
         $usernamePasswordToken = new UsernamePasswordToken('username', 'password', 'providerkey', $roles);
 
-        return array(
-            array($noToken, 'is_anonymous()', false),
-            array($noToken, 'is_authenticated()', false),
-            array($noToken, 'is_fully_authenticated()', false),
-            array($noToken, 'is_remember_me()', false),
-
-            array($anonymousToken, 'is_anonymous()', true),
-            array($anonymousToken, 'is_authenticated()', false),
-            array($anonymousToken, 'is_fully_authenticated()', false),
-            array($anonymousToken, 'is_remember_me()', false),
-            array($anonymousToken, "is_granted('ROLE_USER')", false),
-
-            array($rememberMeToken, 'is_anonymous()', false),
-            array($rememberMeToken, 'is_authenticated()', true),
-            array($rememberMeToken, 'is_fully_authenticated()', false),
-            array($rememberMeToken, 'is_remember_me()', true),
-            array($rememberMeToken, "is_granted('ROLE_FOO')", false),
-            array($rememberMeToken, "is_granted('ROLE_USER')", true),
-
-            array($usernamePasswordToken, 'is_anonymous()', false),
-            array($usernamePasswordToken, 'is_authenticated()', true),
-            array($usernamePasswordToken, 'is_fully_authenticated()', true),
-            array($usernamePasswordToken, 'is_remember_me()', false),
-            array($usernamePasswordToken, "is_granted('ROLE_FOO')", false),
-            array($usernamePasswordToken, "is_granted('ROLE_USER')", true),
-        );
+        return [
+            [$noToken, 'is_anonymous()', false],
+            [$noToken, 'is_authenticated()', false],
+            [$noToken, 'is_fully_authenticated()', false],
+            [$noToken, 'is_remember_me()', false],
+
+            [$anonymousToken, 'is_anonymous()', true],
+            [$anonymousToken, 'is_authenticated()', false],
+            [$anonymousToken, 'is_fully_authenticated()', false],
+            [$anonymousToken, 'is_remember_me()', false],
+            [$anonymousToken, "is_granted('ROLE_USER')", false],
+
+            [$rememberMeToken, 'is_anonymous()', false],
+            [$rememberMeToken, 'is_authenticated()', true],
+            [$rememberMeToken, 'is_fully_authenticated()', false],
+            [$rememberMeToken, 'is_remember_me()', true],
+            [$rememberMeToken, "is_granted('ROLE_FOO')", false],
+            [$rememberMeToken, "is_granted('ROLE_USER')", true],
+
+            [$usernamePasswordToken, 'is_anonymous()', false],
+            [$usernamePasswordToken, 'is_authenticated()', true],
+            [$usernamePasswordToken, 'is_fully_authenticated()', true],
+            [$usernamePasswordToken, 'is_remember_me()', false],
+            [$usernamePasswordToken, "is_granted('ROLE_FOO')", false],
+            [$usernamePasswordToken, "is_granted('ROLE_USER')", true],
+        ];
     }
 
     /**
      * @dataProvider provideLegacyHasRole
      * @group legacy
      */
-    public function testLegacyHasRole($expression, $result, $roles = array())
+    public function testLegacyHasRole($expression, $result, $roles = [])
     {
         $expressionLanguage = new ExpressionLanguage();
-        $context = array('roles' => $roles);
+        $context = ['roles' => $roles];
 
         $this->assertEquals($result, $expressionLanguage->evaluate($expression, $context));
     }
 
     public function provideLegacyHasRole()
     {
-        $roles = array('ROLE_USER', 'ROLE_ADMIN');
-
-        return array(
-            array("has_role('ROLE_FOO')", false),
-            array("has_role('ROLE_USER')", false),
-            array("has_role('ROLE_ADMIN')", false),
-            array("has_role('ROLE_FOO')", false, $roles),
-            array("has_role('ROLE_USER')", true, $roles),
-            array("has_role('ROLE_ADMIN')", true, $roles),
-        );
+        $roles = ['ROLE_USER', 'ROLE_ADMIN'];
+
+        return [
+            ["has_role('ROLE_FOO')", false],
+            ["has_role('ROLE_USER')", false],
+            ["has_role('ROLE_ADMIN')", false],
+            ["has_role('ROLE_FOO')", false, $roles],
+            ["has_role('ROLE_USER')", true, $roles],
+            ["has_role('ROLE_ADMIN')", true, $roles],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
index c8875701b860..5df07a22487b 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/TraceableAccessDecisionManagerTest.php
@@ -29,7 +29,7 @@ public function testDecideLog(array $expectedLog, array $attributes, $object, ar
 
         $admMock = $this
             ->getMockBuilder(AccessDecisionManager::class)
-            ->setMethods(array('decide'))
+            ->setMethods(['decide'])
             ->getMock();
 
         $adm = new TraceableAccessDecisionManager($admMock);
@@ -58,120 +58,120 @@ public function provideObjectsAndLogs(): \Generator
         $voter1 = $this->getMockForAbstractClass(VoterInterface::class);
         $voter2 = $this->getMockForAbstractClass(VoterInterface::class);
 
-        yield array(
-            array(array(
-                'attributes' => array('ATTRIBUTE_1'),
+        yield [
+            [[
+                'attributes' => ['ATTRIBUTE_1'],
                 'object' => null,
                 'result' => true,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array('ATTRIBUTE_1'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                    array('voter' => $voter2, 'attributes' => array('ATTRIBUTE_1'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                ),
-            )),
-            array('ATTRIBUTE_1'),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => ['ATTRIBUTE_1'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                    ['voter' => $voter2, 'attributes' => ['ATTRIBUTE_1'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                ],
+            ]],
+            ['ATTRIBUTE_1'],
             null,
-            array(
-                array($voter1, VoterInterface::ACCESS_GRANTED),
-                array($voter2, VoterInterface::ACCESS_GRANTED),
-            ),
+            [
+                [$voter1, VoterInterface::ACCESS_GRANTED],
+                [$voter2, VoterInterface::ACCESS_GRANTED],
+            ],
             true,
-        );
-        yield array(
-            array(array(
-                'attributes' => array('ATTRIBUTE_1', 'ATTRIBUTE_2'),
+        ];
+        yield [
+            [[
+                'attributes' => ['ATTRIBUTE_1', 'ATTRIBUTE_2'],
                 'object' => true,
                 'result' => false,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array('ATTRIBUTE_1', 'ATTRIBUTE_2'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                    array('voter' => $voter2, 'attributes' => array('ATTRIBUTE_1', 'ATTRIBUTE_2'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                ),
-            )),
-            array('ATTRIBUTE_1', 'ATTRIBUTE_2'),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => ['ATTRIBUTE_1', 'ATTRIBUTE_2'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                    ['voter' => $voter2, 'attributes' => ['ATTRIBUTE_1', 'ATTRIBUTE_2'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                ],
+            ]],
+            ['ATTRIBUTE_1', 'ATTRIBUTE_2'],
             true,
-            array(
-                array($voter1, VoterInterface::ACCESS_ABSTAIN),
-                array($voter2, VoterInterface::ACCESS_GRANTED),
-            ),
+            [
+                [$voter1, VoterInterface::ACCESS_ABSTAIN],
+                [$voter2, VoterInterface::ACCESS_GRANTED],
+            ],
             false,
-        );
-        yield array(
-            array(array(
-                'attributes' => array(null),
+        ];
+        yield [
+            [[
+                'attributes' => [null],
                 'object' => 'jolie string',
                 'result' => false,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array(null), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                    array('voter' => $voter2, 'attributes' => array(null), 'vote' => VoterInterface::ACCESS_DENIED),
-                ),
-            )),
-            array(null),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => [null], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                    ['voter' => $voter2, 'attributes' => [null], 'vote' => VoterInterface::ACCESS_DENIED],
+                ],
+            ]],
+            [null],
             'jolie string',
-            array(
-                array($voter1, VoterInterface::ACCESS_ABSTAIN),
-                array($voter2, VoterInterface::ACCESS_DENIED),
-            ),
+            [
+                [$voter1, VoterInterface::ACCESS_ABSTAIN],
+                [$voter2, VoterInterface::ACCESS_DENIED],
+            ],
             false,
-        );
-        yield array(
-            array(array(
-                'attributes' => array(12),
+        ];
+        yield [
+            [[
+                'attributes' => [12],
                 'object' => 12345,
                 'result' => true,
-                'voterDetails' => array(),
-            )),
-            'attributes' => array(12),
+                'voterDetails' => [],
+            ]],
+            'attributes' => [12],
             12345,
-            array(),
+            [],
             true,
-        );
-        yield array(
-            array(array(
-                'attributes' => array(new \stdClass()),
+        ];
+        yield [
+            [[
+                'attributes' => [new \stdClass()],
                 'object' => $x = fopen(__FILE__, 'rb'),
                 'result' => true,
-                'voterDetails' => array(),
-            )),
-            array(new \stdClass()),
+                'voterDetails' => [],
+            ]],
+            [new \stdClass()],
             $x,
-            array(),
+            [],
             true,
-        );
-        yield array(
-            array(array(
-                'attributes' => array('ATTRIBUTE_2'),
-                'object' => $x = array(),
+        ];
+        yield [
+            [[
+                'attributes' => ['ATTRIBUTE_2'],
+                'object' => $x = [],
                 'result' => false,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array('ATTRIBUTE_2'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                    array('voter' => $voter2, 'attributes' => array('ATTRIBUTE_2'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                ),
-            )),
-            array('ATTRIBUTE_2'),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => ['ATTRIBUTE_2'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                    ['voter' => $voter2, 'attributes' => ['ATTRIBUTE_2'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                ],
+            ]],
+            ['ATTRIBUTE_2'],
             $x,
-            array(
-                array($voter1, VoterInterface::ACCESS_ABSTAIN),
-                array($voter2, VoterInterface::ACCESS_ABSTAIN),
-            ),
+            [
+                [$voter1, VoterInterface::ACCESS_ABSTAIN],
+                [$voter2, VoterInterface::ACCESS_ABSTAIN],
+            ],
             false,
-        );
-        yield array(
-            array(array(
-                'attributes' => array(12.13),
+        ];
+        yield [
+            [[
+                'attributes' => [12.13],
                 'object' => new \stdClass(),
                 'result' => false,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array(12.13), 'vote' => VoterInterface::ACCESS_DENIED),
-                    array('voter' => $voter2, 'attributes' => array(12.13), 'vote' => VoterInterface::ACCESS_DENIED),
-                ),
-            )),
-            array(12.13),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => [12.13], 'vote' => VoterInterface::ACCESS_DENIED],
+                    ['voter' => $voter2, 'attributes' => [12.13], 'vote' => VoterInterface::ACCESS_DENIED],
+                ],
+            ]],
+            [12.13],
             new \stdClass(),
-            array(
-                array($voter1, VoterInterface::ACCESS_DENIED),
-                array($voter2, VoterInterface::ACCESS_DENIED),
-            ),
+            [
+                [$voter1, VoterInterface::ACCESS_DENIED],
+                [$voter2, VoterInterface::ACCESS_DENIED],
+            ],
             false,
-        );
+        ];
     }
 
     public function testDebugAccessDecisionManagerAliasExistsForBC()
@@ -188,20 +188,20 @@ public function testAccessDecisionManagerCalledByVoter()
     {
         $voter1 = $this
             ->getMockBuilder(VoterInterface::class)
-            ->setMethods(array('vote'))
+            ->setMethods(['vote'])
             ->getMock();
 
         $voter2 = $this
             ->getMockBuilder(VoterInterface::class)
-            ->setMethods(array('vote'))
+            ->setMethods(['vote'])
             ->getMock();
 
         $voter3 = $this
             ->getMockBuilder(VoterInterface::class)
-            ->setMethods(array('vote'))
+            ->setMethods(['vote'])
             ->getMock();
 
-        $sut = new TraceableAccessDecisionManager(new AccessDecisionManager(array($voter1, $voter2, $voter3)));
+        $sut = new TraceableAccessDecisionManager(new AccessDecisionManager([$voter1, $voter2, $voter3]));
 
         $voter1
             ->expects($this->any())
@@ -244,37 +244,37 @@ public function testAccessDecisionManagerCalledByVoter()
             });
 
         $token = $this->getMockBuilder(TokenInterface::class)->getMock();
-        $sut->decide($token, array('attr1'), null);
-        $sut->decide($token, array('attr2'), $obj = new \stdClass());
+        $sut->decide($token, ['attr1'], null);
+        $sut->decide($token, ['attr2'], $obj = new \stdClass());
 
-        $this->assertEquals(array(
-            array(
-                'attributes' => array('attr1'),
+        $this->assertEquals([
+            [
+                'attributes' => ['attr1'],
                 'object' => null,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array('attr1'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                ),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => ['attr1'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                ],
                 'result' => true,
-            ),
-            array(
-                'attributes' => array('attr2'),
+            ],
+            [
+                'attributes' => ['attr2'],
                 'object' => null,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array('attr2'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                    array('voter' => $voter2, 'attributes' => array('attr2'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                ),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => ['attr2'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                    ['voter' => $voter2, 'attributes' => ['attr2'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                ],
                 'result' => true,
-            ),
-            array(
-                'attributes' => array('attr2'),
+            ],
+            [
+                'attributes' => ['attr2'],
                 'object' => $obj,
-                'voterDetails' => array(
-                    array('voter' => $voter1, 'attributes' => array('attr2'), 'vote' => VoterInterface::ACCESS_ABSTAIN),
-                    array('voter' => $voter2, 'attributes' => array('attr2'), 'vote' => VoterInterface::ACCESS_DENIED),
-                    array('voter' => $voter3, 'attributes' => array('attr2'), 'vote' => VoterInterface::ACCESS_GRANTED),
-                ),
+                'voterDetails' => [
+                    ['voter' => $voter1, 'attributes' => ['attr2'], 'vote' => VoterInterface::ACCESS_ABSTAIN],
+                    ['voter' => $voter2, 'attributes' => ['attr2'], 'vote' => VoterInterface::ACCESS_DENIED],
+                    ['voter' => $voter3, 'attributes' => ['attr2'], 'vote' => VoterInterface::ACCESS_GRANTED],
+                ],
                 'result' => true,
-            ),
-        ), $sut->getDecisionLog());
+            ],
+        ], $sut->getDecisionLog());
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/TraceableVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/TraceableVoterTest.php
index 8d8ba1815170..99bf1f6eff90 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/TraceableVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/TraceableVoterTest.php
@@ -38,16 +38,16 @@ public function testVote()
         $voter
             ->expects($this->once())
             ->method('vote')
-            ->with($token, 'anysubject', array('attr1'))
+            ->with($token, 'anysubject', ['attr1'])
             ->willReturn(VoterInterface::ACCESS_DENIED);
 
         $eventDispatcher
             ->expects($this->once())
             ->method('dispatch')
-            ->with('debug.security.authorization.vote', new VoteEvent($voter, 'anysubject', array('attr1'), VoterInterface::ACCESS_DENIED));
+            ->with('debug.security.authorization.vote', new VoteEvent($voter, 'anysubject', ['attr1'], VoterInterface::ACCESS_DENIED));
 
         $sut = new TraceableVoter($voter, $eventDispatcher);
-        $result = $sut->vote($token, 'anysubject', array('attr1'));
+        $result = $sut->vote($token, 'anysubject', ['attr1']);
 
         $this->assertSame(VoterInterface::ACCESS_DENIED, $result);
     }
diff --git a/src/Symfony/Component/Security/Core/User/LdapUserProvider.php b/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
index 01b6b6d3d342..adb820fccaf3 100644
--- a/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
+++ b/src/Symfony/Component/Security/Core/User/LdapUserProvider.php
@@ -35,7 +35,7 @@ class LdapUserProvider implements UserProviderInterface
     private $defaultSearch;
     private $passwordAttribute;
 
-    public function __construct(LdapInterface $ldap, string $baseDn, string $searchDn = null, string $searchPassword = null, array $defaultRoles = array(), string $uidKey = null, string $filter = null, string $passwordAttribute = null)
+    public function __construct(LdapInterface $ldap, string $baseDn, string $searchDn = null, string $searchPassword = null, array $defaultRoles = [], string $uidKey = null, string $filter = null, string $passwordAttribute = null)
     {
         if (null === $uidKey) {
             $uidKey = 'sAMAccountName';
diff --git a/src/Symfony/Component/Security/Http/Tests/FirewallTest.php b/src/Symfony/Component/Security/Http/Tests/FirewallTest.php
index bc7db4d506d1..7a601f6050e5 100644
--- a/src/Symfony/Component/Security/Http/Tests/FirewallTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/FirewallTest.php
@@ -41,7 +41,7 @@ public function testOnKernelRequestRegistersExceptionListener()
             ->expects($this->once())
             ->method('getListeners')
             ->with($this->equalTo($request))
-            ->will($this->returnValue(array(array(), $listener, null)))
+            ->will($this->returnValue([[], $listener, null]))
         ;
 
         $event = new GetResponseEvent($this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock(), $request, HttpKernelInterface::MASTER_REQUEST);
@@ -70,16 +70,16 @@ public function testOnKernelRequestStopsWhenThereIsAResponse()
         $map
             ->expects($this->once())
             ->method('getListeners')
-            ->will($this->returnValue(array(array($first, $second), null, null)))
+            ->will($this->returnValue([[$first, $second], null, null]))
         ;
 
         $event = $this->getMockBuilder('Symfony\Component\HttpKernel\Event\GetResponseEvent')
-            ->setMethods(array('hasResponse'))
-            ->setConstructorArgs(array(
+            ->setMethods(['hasResponse'])
+            ->setConstructorArgs([
                 $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock(),
                 $this->getMockBuilder('Symfony\Component\HttpFoundation\Request')->disableOriginalConstructor()->disableOriginalClone()->getMock(),
                 HttpKernelInterface::MASTER_REQUEST,
-            ))
+            ])
             ->getMock()
         ;
         $event
@@ -134,7 +134,7 @@ public function testMissingLogoutListener()
             ->expects($this->once())
             ->method('getListeners')
             ->with($this->equalTo($request))
-            ->willReturn(array(array(), $listener))
+            ->willReturn([[], $listener])
         ;
 
         $firewall = new Firewall($map, $dispatcher);
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
index 5405bc1b042e..506cfea61cea 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/PersistentTokenBasedRememberMeServicesTest.php
@@ -36,14 +36,14 @@ public static function setUpBeforeClass()
 
     public function testAutoLoginReturnsNullWhenNoCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo']);
 
         $this->assertNull($service->autoLogin(new Request()));
     }
 
     public function testAutoLoginThrowsExceptionOnInvalidCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo']);
         $request = new Request();
         $request->request->set('foo', 'true');
         $request->cookies->set('foo', 'foo');
@@ -54,13 +54,13 @@ public function testAutoLoginThrowsExceptionOnInvalidCookie()
 
     public function testAutoLoginThrowsExceptionOnNonExistentToken()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo']);
         $request = new Request();
         $request->request->set('foo', 'true');
-        $request->cookies->set('foo', $this->encodeCookie(array(
+        $request->cookies->set('foo', $this->encodeCookie([
             $series = 'fooseries',
             $tokenValue = 'foovalue',
-        )));
+        ]));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $tokenProvider
@@ -77,9 +77,9 @@ public function testAutoLoginThrowsExceptionOnNonExistentToken()
     public function testAutoLoginReturnsNullOnNonExistentUser()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600, 'secure' => false, 'httponly' => false));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600, 'secure' => false, 'httponly' => false]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $tokenProvider
@@ -102,9 +102,9 @@ public function testAutoLoginReturnsNullOnNonExistentUser()
     public function testAutoLoginThrowsExceptionOnStolenCookieAndRemovesItFromThePersistentBackend()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $service->setTokenProvider($tokenProvider);
@@ -133,9 +133,9 @@ public function testAutoLoginThrowsExceptionOnStolenCookieAndRemovesItFromThePer
 
     public function testAutoLoginDoesNotAcceptAnExpiredCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $tokenProvider
@@ -156,7 +156,7 @@ public function testAutoLogin()
         $user
             ->expects($this->once())
             ->method('getRoles')
-            ->will($this->returnValue(array('ROLE_FOO')))
+            ->will($this->returnValue(['ROLE_FOO']))
         ;
 
         $userProvider = $this->getProvider();
@@ -167,9 +167,9 @@ public function testAutoLogin()
             ->will($this->returnValue($user))
         ;
 
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'secure' => false, 'httponly' => false, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'secure' => false, 'httponly' => false, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
 
         $tokenProvider = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\RememberMe\TokenProviderInterface')->getMock();
         $tokenProvider
@@ -190,9 +190,9 @@ public function testAutoLogin()
 
     public function testLogout()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => '/foo', 'domain' => 'foodomain.foo', 'secure' => true, 'httponly' => false));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => '/foo', 'domain' => 'foodomain.foo', 'secure' => true, 'httponly' => false]);
         $request = new Request();
-        $request->cookies->set('foo', $this->encodeCookie(array('fooseries', 'foovalue')));
+        $request->cookies->set('foo', $this->encodeCookie(['fooseries', 'foovalue']));
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
 
@@ -217,7 +217,7 @@ public function testLogout()
 
     public function testLogoutSimplyIgnoresNonSetRequestCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -239,7 +239,7 @@ public function testLogoutSimplyIgnoresNonSetRequestCookie()
 
     public function testLogoutSimplyIgnoresInvalidCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
         $request->cookies->set('foo', 'somefoovalue');
         $response = new Response();
@@ -259,7 +259,7 @@ public function testLogoutSimplyIgnoresInvalidCookie()
 
     public function testLoginFail()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
         $request = new Request();
 
         $this->assertFalse($request->attributes->has(RememberMeServicesInterface::COOKIE_ATTR_NAME));
@@ -269,7 +269,7 @@ public function testLoginFail()
 
     public function testLoginSuccessSetsCookieWhenLoggedInWithNonRememberMeTokenInterfaceImplementation()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'domain' => 'myfoodomain.foo', 'path' => '/foo/path', 'secure' => true, 'httponly' => true, 'samesite' => Cookie::SAMESITE_STRICT, 'lifetime' => 3600, 'always_remember_me' => true));
+        $service = $this->getService(null, ['name' => 'foo', 'domain' => 'myfoodomain.foo', 'path' => '/foo/path', 'secure' => true, 'httponly' => true, 'samesite' => Cookie::SAMESITE_STRICT, 'lifetime' => 3600, 'always_remember_me' => true]);
         $request = new Request();
         $response = new Response();
 
@@ -318,13 +318,13 @@ protected function encodeCookie(array $parts)
         return $r->invoke($service, $parts);
     }
 
-    protected function getService($userProvider = null, $options = array(), $logger = null)
+    protected function getService($userProvider = null, $options = [], $logger = null)
     {
         if (null === $userProvider) {
             $userProvider = $this->getProvider();
         }
 
-        return new PersistentTokenBasedRememberMeServices(array($userProvider), 'foosecret', 'fookey', $options, $logger);
+        return new PersistentTokenBasedRememberMeServices([$userProvider], 'foosecret', 'fookey', $options, $logger);
     }
 
     protected function getProvider()
diff --git a/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php b/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
index de25e3a6d514..e71e650a4d96 100644
--- a/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/RememberMe/TokenBasedRememberMeServicesTest.php
@@ -24,14 +24,14 @@ class TokenBasedRememberMeServicesTest extends TestCase
 {
     public function testAutoLoginReturnsNullWhenNoCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo']);
 
         $this->assertNull($service->autoLogin(new Request()));
     }
 
     public function testAutoLoginThrowsExceptionOnInvalidCookie()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo'));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => false, 'remember_me_parameter' => 'foo']);
         $request = new Request();
         $request->request->set('foo', 'true');
         $request->cookies->set('foo', 'foo');
@@ -43,7 +43,7 @@ public function testAutoLoginThrowsExceptionOnInvalidCookie()
     public function testAutoLoginThrowsExceptionOnNonExistentUser()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
         $request->cookies->set('foo', $this->getCookie('fooclass', 'foouser', time() + 3600, 'foopass'));
 
@@ -60,7 +60,7 @@ public function testAutoLoginThrowsExceptionOnNonExistentUser()
     public function testAutoLoginDoesNotAcceptCookieWithInvalidHash()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
         $request->cookies->set('foo', base64_encode('class:'.base64_encode('foouser').':123456789:fooHash'));
 
@@ -85,7 +85,7 @@ public function testAutoLoginDoesNotAcceptCookieWithInvalidHash()
     public function testAutoLoginDoesNotAcceptAnExpiredCookie()
     {
         $userProvider = $this->getProvider();
-        $service = $this->getService($userProvider, array('name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'path' => null, 'domain' => null, 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
         $request->cookies->set('foo', $this->getCookie('fooclass', 'foouser', time() - 1, 'foopass'));
 
@@ -118,7 +118,7 @@ public function testAutoLogin($username)
         $user
             ->expects($this->once())
             ->method('getRoles')
-            ->will($this->returnValue(array('ROLE_FOO')))
+            ->will($this->returnValue(['ROLE_FOO']))
         ;
         $user
             ->expects($this->once())
@@ -134,7 +134,7 @@ public function testAutoLogin($username)
             ->will($this->returnValue($user))
         ;
 
-        $service = $this->getService($userProvider, array('name' => 'foo', 'always_remember_me' => true, 'lifetime' => 3600));
+        $service = $this->getService($userProvider, ['name' => 'foo', 'always_remember_me' => true, 'lifetime' => 3600]);
         $request = new Request();
         $request->cookies->set('foo', $this->getCookie('fooclass', $username, time() + 3600, 'foopass'));
 
@@ -147,15 +147,15 @@ public function testAutoLogin($username)
 
     public function provideUsernamesForAutoLogin()
     {
-        return array(
-            array('foouser', 'Simple username'),
-            array('foo'.TokenBasedRememberMeServices::COOKIE_DELIMITER.'user', 'Username might contain the delimiter'),
-        );
+        return [
+            ['foouser', 'Simple username'],
+            ['foo'.TokenBasedRememberMeServices::COOKIE_DELIMITER.'user', 'Username might contain the delimiter'],
+        ];
     }
 
     public function testLogout()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => null, 'domain' => null, 'secure' => true, 'httponly' => false));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null, 'secure' => true, 'httponly' => false]);
         $request = new Request();
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -172,7 +172,7 @@ public function testLogout()
 
     public function testLoginFail()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'path' => '/foo', 'domain' => 'foodomain.foo'));
+        $service = $this->getService(null, ['name' => 'foo', 'path' => '/foo', 'domain' => 'foodomain.foo']);
         $request = new Request();
 
         $service->loginFail($request);
@@ -185,7 +185,7 @@ public function testLoginFail()
 
     public function testLoginSuccessIgnoresTokensWhichDoNotContainAnUserInterfaceImplementation()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null));
+        $service = $this->getService(null, ['name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null]);
         $request = new Request();
         $response = new Response();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
@@ -206,7 +206,7 @@ public function testLoginSuccessIgnoresTokensWhichDoNotContainAnUserInterfaceImp
 
     public function testLoginSuccess()
     {
-        $service = $this->getService(null, array('name' => 'foo', 'domain' => 'myfoodomain.foo', 'path' => '/foo/path', 'secure' => true, 'httponly' => true, 'samesite' => Cookie::SAMESITE_STRICT, 'lifetime' => 3600, 'always_remember_me' => true));
+        $service = $this->getService(null, ['name' => 'foo', 'domain' => 'myfoodomain.foo', 'path' => '/foo/path', 'secure' => true, 'httponly' => true, 'samesite' => Cookie::SAMESITE_STRICT, 'lifetime' => 3600, 'always_remember_me' => true]);
         $request = new Request();
         $response = new Response();
 
@@ -262,13 +262,13 @@ protected function encodeCookie(array $parts)
         return $r->invoke($service, $parts);
     }
 
-    protected function getService($userProvider = null, $options = array(), $logger = null)
+    protected function getService($userProvider = null, $options = [], $logger = null)
     {
         if (null === $userProvider) {
             $userProvider = $this->getProvider();
         }
 
-        $service = new TokenBasedRememberMeServices(array($userProvider), 'foosecret', 'fookey', $options, $logger);
+        $service = new TokenBasedRememberMeServices([$userProvider], 'foosecret', 'fookey', $options, $logger);
 
         return $service;
     }
diff --git a/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php b/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
index c453120fc6a0..eaaa8dffc3d3 100644
--- a/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/CsvEncoder.php
@@ -30,31 +30,31 @@ class CsvEncoder implements EncoderInterface, DecoderInterface
     const ESCAPE_FORMULAS_KEY = 'csv_escape_formulas';
     const AS_COLLECTION_KEY = 'as_collection';
 
-    private $formulasStartCharacters = array('=', '-', '+', '@');
-    private $defaultContext = array(
+    private $formulasStartCharacters = ['=', '-', '+', '@'];
+    private $defaultContext = [
         self::DELIMITER_KEY => ',',
         self::ENCLOSURE_KEY => '"',
         self::ESCAPE_CHAR_KEY => '\\',
         self::ESCAPE_FORMULAS_KEY => false,
-        self::HEADERS_KEY => array(),
+        self::HEADERS_KEY => [],
         self::KEY_SEPARATOR_KEY => '.',
-    );
+    ];
 
     /**
      * @param array $defaultContext
      */
-    public function __construct($defaultContext = array(), string $enclosure = '"', string $escapeChar = '\\', string $keySeparator = '.', bool $escapeFormulas = false)
+    public function __construct($defaultContext = [], string $enclosure = '"', string $escapeChar = '\\', string $keySeparator = '.', bool $escapeFormulas = false)
     {
         if (!\is_array($defaultContext)) {
             @trigger_error('Passing configuration options directly to the constructor is deprecated since Symfony 4.2, use the default context instead.', E_USER_DEPRECATED);
 
-            $defaultContext = array(
+            $defaultContext = [
                 self::DELIMITER_KEY => (string) $defaultContext,
                 self::ENCLOSURE_KEY => $enclosure,
                 self::ESCAPE_CHAR_KEY => $escapeChar,
                 self::KEY_SEPARATOR_KEY => $keySeparator,
                 self::ESCAPE_FORMULAS_KEY => $escapeFormulas,
-            );
+            ];
         }
 
         $this->defaultContext = array_merge($this->defaultContext, $defaultContext);
@@ -63,20 +63,20 @@ public function __construct($defaultContext = array(), string $enclosure = '"',
     /**
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         $handle = fopen('php://temp,', 'w+');
 
         if (!\is_array($data)) {
-            $data = array(array($data));
+            $data = [[$data]];
         } elseif (empty($data)) {
-            $data = array(array());
+            $data = [[]];
         } else {
             // Sequential arrays of arrays are considered as collections
             $i = 0;
             foreach ($data as $key => $value) {
                 if ($i !== $key || !\is_array($value)) {
-                    $data = array($data);
+                    $data = [$data];
                     break;
                 }
 
@@ -87,7 +87,7 @@ public function encode($data, $format, array $context = array())
         list($delimiter, $enclosure, $escapeChar, $keySeparator, $headers, $escapeFormulas) = $this->getCsvOptions($context);
 
         foreach ($data as &$value) {
-            $flattened = array();
+            $flattened = [];
             $this->flatten($value, $flattened, $keySeparator, '', $escapeFormulas);
             $value = $flattened;
         }
@@ -120,7 +120,7 @@ public function supportsEncoding($format)
     /**
      * {@inheritdoc}
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         $handle = fopen('php://temp', 'r+');
         fwrite($handle, $data);
@@ -128,8 +128,8 @@ public function decode($data, $format, array $context = array())
 
         $headers = null;
         $nbHeaders = 0;
-        $headerCount = array();
-        $result = array();
+        $headerCount = [];
+        $result = [];
 
         list($delimiter, $enclosure, $escapeChar, $keySeparator) = $this->getCsvOptions($context);
 
@@ -148,7 +148,7 @@ public function decode($data, $format, array $context = array())
                 continue;
             }
 
-            $item = array();
+            $item = [];
             for ($i = 0; ($i < $nbCols) && ($i < $nbHeaders); ++$i) {
                 $depth = $headerCount[$i];
                 $arr = &$item;
@@ -161,7 +161,7 @@ public function decode($data, $format, array $context = array())
                     }
 
                     if (!isset($arr[$headers[$i][$j]])) {
-                        $arr[$headers[$i][$j]] = array();
+                        $arr[$headers[$i][$j]] = [];
                     }
 
                     $arr = &$arr[$headers[$i][$j]];
@@ -227,7 +227,7 @@ private function getCsvOptions(array $context): array
             throw new InvalidArgumentException(sprintf('The "%s" context variable must be an array or null, given "%s".', self::HEADERS_KEY, \gettype($headers)));
         }
 
-        return array($delimiter, $enclosure, $escapeChar, $keySeparator, $headers, $escapeFormulas);
+        return [$delimiter, $enclosure, $escapeChar, $keySeparator, $headers, $escapeFormulas];
     }
 
     /**
@@ -235,8 +235,8 @@ private function getCsvOptions(array $context): array
      */
     private function extractHeaders(array $data)
     {
-        $headers = array();
-        $flippedHeaders = array();
+        $headers = [];
+        $flippedHeaders = [];
 
         foreach ($data as $row) {
             $previousHeader = null;
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonDecode.php b/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
index 2722974d586a..789e166b50df 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonDecode.php
@@ -34,26 +34,26 @@ class JsonDecode implements DecoderInterface
      */
     const RECURSION_DEPTH = 'json_decode_recursion_depth';
 
-    private $defaultContext = array(
+    private $defaultContext = [
         self::ASSOCIATIVE => false,
         self::OPTIONS => 0,
         self::RECURSION_DEPTH => 512,
-    );
+    ];
 
     /**
      * Constructs a new JsonDecode instance.
      *
      * @param array $defaultContext
      */
-    public function __construct($defaultContext = array(), int $depth = 512)
+    public function __construct($defaultContext = [], int $depth = 512)
     {
         if (!\is_array($defaultContext)) {
             @trigger_error(sprintf('Using constructor parameters that are not a default context is deprecated since Symfony 4.2, use the "%s" and "%s" keys of the context instead.', self::ASSOCIATIVE, self::RECURSION_DEPTH), E_USER_DEPRECATED);
 
-            $defaultContext = array(
+            $defaultContext = [
                 self::ASSOCIATIVE => (bool) $defaultContext,
                 self::RECURSION_DEPTH => $depth,
-            );
+            ];
         }
 
         $this->defaultContext = array_merge($this->defaultContext, $defaultContext);
@@ -86,7 +86,7 @@ public function __construct($defaultContext = array(), int $depth = 512)
      *
      * @see http://php.net/json_decode json_decode
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         $associative = $context[self::ASSOCIATIVE] ?? $this->defaultContext[self::ASSOCIATIVE];
         $recursionDepth = $context[self::RECURSION_DEPTH] ?? $this->defaultContext[self::RECURSION_DEPTH];
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonEncode.php b/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
index 63669d4ca696..ca9fc9e5d779 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonEncode.php
@@ -22,14 +22,14 @@ class JsonEncode implements EncoderInterface
 {
     const OPTIONS = 'json_encode_options';
 
-    private $defaultContext = array(
+    private $defaultContext = [
         self::OPTIONS => 0,
-    );
+    ];
 
     /**
      * @param array $defaultContext
      */
-    public function __construct($defaultContext = array())
+    public function __construct($defaultContext = [])
     {
         if (!\is_array($defaultContext)) {
             @trigger_error(sprintf('Passing an integer as first parameter of the "%s()" method is deprecated since Symfony 4.2, use the "json_encode_options" key of the context instead.', __METHOD__), E_USER_DEPRECATED);
@@ -45,7 +45,7 @@ public function __construct($defaultContext = array())
      *
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         $jsonEncodeOptions = $context[self::OPTIONS] ?? $this->defaultContext[self::OPTIONS];
         $encodedJson = json_encode($data, $jsonEncodeOptions);
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php b/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
index 9657b3d80b60..8cb98accdf77 100644
--- a/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
@@ -26,7 +26,7 @@ class JsonEncoder implements EncoderInterface, DecoderInterface
     public function __construct(JsonEncode $encodingImpl = null, JsonDecode $decodingImpl = null)
     {
         $this->encodingImpl = $encodingImpl ?: new JsonEncode();
-        $this->decodingImpl = $decodingImpl ?: new JsonDecode(array(JsonDecode::ASSOCIATIVE => true));
+        $this->decodingImpl = $decodingImpl ?: new JsonDecode([JsonDecode::ASSOCIATIVE => true]);
     }
 
     /**
diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index 3632be1f8950..86a844e53519 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -54,15 +54,15 @@ class XmlEncoder implements EncoderInterface, DecoderInterface, NormalizationAwa
     const TYPE_CASE_ATTRIBUTES = 'xml_type_cast_attributes';
     const VERSION = 'xml_version';
 
-    private $defaultContext = array(
+    private $defaultContext = [
         self::AS_COLLECTION => false,
-        self::DECODER_IGNORED_NODE_TYPES => array(XML_PI_NODE, XML_COMMENT_NODE),
-        self::ENCODER_IGNORED_NODE_TYPES => array(),
+        self::DECODER_IGNORED_NODE_TYPES => [XML_PI_NODE, XML_COMMENT_NODE],
+        self::ENCODER_IGNORED_NODE_TYPES => [],
         self::LOAD_OPTIONS => LIBXML_NONET | LIBXML_NOBLANKS,
         self::REMOVE_EMPTY_TAGS => false,
         self::ROOT_NODE_NAME => 'response',
         self::TYPE_CASE_ATTRIBUTES => true,
-    );
+    ];
 
     /**
      * @var \DOMDocument
@@ -74,17 +74,17 @@ class XmlEncoder implements EncoderInterface, DecoderInterface, NormalizationAwa
     /**
      * @param array $defaultContext
      */
-    public function __construct($defaultContext = array(), int $loadOptions = null, array $decoderIgnoredNodeTypes = array(XML_PI_NODE, XML_COMMENT_NODE), array $encoderIgnoredNodeTypes = array())
+    public function __construct($defaultContext = [], int $loadOptions = null, array $decoderIgnoredNodeTypes = [XML_PI_NODE, XML_COMMENT_NODE], array $encoderIgnoredNodeTypes = [])
     {
         if (!\is_array($defaultContext)) {
             @trigger_error('Passing configuration options directly to the constructor is deprecated since Symfony 4.2, use the default context instead.', E_USER_DEPRECATED);
 
-            $defaultContext = array(
+            $defaultContext = [
                 self::DECODER_IGNORED_NODE_TYPES => $decoderIgnoredNodeTypes,
                 self::ENCODER_IGNORED_NODE_TYPES => $encoderIgnoredNodeTypes,
                 self::LOAD_OPTIONS => $loadOptions ?? LIBXML_NONET | LIBXML_NOBLANKS,
                 self::ROOT_NODE_NAME => (string) $defaultContext,
-            );
+            ];
         }
 
         $this->defaultContext = array_merge($this->defaultContext, $defaultContext);
@@ -93,7 +93,7 @@ public function __construct($defaultContext = array(), int $loadOptions = null,
     /**
      * {@inheritdoc}
      */
-    public function encode($data, $format, array $context = array())
+    public function encode($data, $format, array $context = [])
     {
         $encoderIgnoredNodeTypes = $context[self::ENCODER_IGNORED_NODE_TYPES] ?? $this->defaultContext[self::ENCODER_IGNORED_NODE_TYPES];
         $ignorePiNode = \in_array(XML_PI_NODE, $encoderIgnoredNodeTypes, true);
@@ -121,7 +121,7 @@ public function encode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function decode($data, $format, array $context = array())
+    public function decode($data, $format, array $context = [])
     {
         if ('' === trim($data)) {
             throw new NotEncodableValueException('Invalid XML data, it can not be empty.');
@@ -158,7 +158,7 @@ public function decode($data, $format, array $context = array())
 
         if ($rootNode->hasChildNodes()) {
             $xpath = new \DOMXPath($dom);
-            $data = array();
+            $data = [];
             foreach ($xpath->query('namespace::*', $dom->documentElement) as $nsNode) {
                 $data['@'.$nsNode->nodeName] = $nsNode->nodeValue;
             }
@@ -176,7 +176,7 @@ public function decode($data, $format, array $context = array())
             return $rootNode->nodeValue;
         }
 
-        $data = array();
+        $data = [];
 
         foreach ($rootNode->attributes as $attrKey => $attr) {
             $data['@'.$attrKey] = $attr->nodeValue;
@@ -297,7 +297,7 @@ final protected function isElementNameValid(string $name): bool
      *
      * @return array|string
      */
-    private function parseXml(\DOMNode $node, array $context = array())
+    private function parseXml(\DOMNode $node, array $context = [])
     {
         $data = $this->par
10000
seXmlAttributes($node, $context);
 
@@ -329,13 +329,13 @@ private function parseXml(\DOMNode $node, array $context = array())
     /**
      * Parse the input DOMNode attributes into an array.
      */
-    private function parseXmlAttributes(\DOMNode $node, array $context = array()): array
+    private function parseXmlAttributes(\DOMNode $node, array $context = []): array
     {
         if (!$node->hasAttributes()) {
-            return array();
+            return [];
         }
 
-        $data = array();
+        $data = [];
         $typeCastAttributes = (bool) ($context[self::TYPE_CASE_ATTRIBUTES] ?? $this->defaultContext[self::TYPE_CASE_ATTRIBUTES]);
 
         foreach ($node->attributes as $attr) {
@@ -362,17 +362,17 @@ private function parseXmlAttributes(\DOMNode $node, array $context = array()): a
      *
      * @return array|string
      */
-    private function parseXmlValue(\DOMNode $node, array $context = array())
+    private function parseXmlValue(\DOMNode $node, array $context = [])
     {
         if (!$node->hasChildNodes()) {
             return $node->nodeValue;
         }
 
-        if (1 === $node->childNodes->length && \in_array($node->firstChild->nodeType, array(XML_TEXT_NODE, XML_CDATA_SECTION_NODE))) {
+        if (1 === $node->childNodes->length && \in_array($node->firstChild->nodeType, [XML_TEXT_NODE, XML_CDATA_SECTION_NODE])) {
             return $node->firstChild->nodeValue;
         }
 
-        $value = array();
+        $value = [];
         $decoderIgnoredNodeTypes = $context[self::DECODER_IGNORED_NODE_TYPES] ?? $this->defaultContext[self::DECODER_IGNORED_NODE_TYPES];
         foreach ($node->childNodes as $subnode) {
             if (\in_array($subnode->nodeType, $decoderIgnoredNodeTypes, true)) {
@@ -539,7 +539,7 @@ private function createDomDocument(array $context): \DOMDocument
         $document = new \DOMDocument();
 
         // Set an attribute on the DOM document specifying, as part of the XML declaration,
-        $xmlOptions = array(
+        $xmlOptions = [
             // nicely formats output with indentation and extra space
             self::FORMAT_OUTPUT => 'formatOutput',
             // the version number of the document
@@ -548,7 +548,7 @@ private function createDomDocument(array $context): \DOMDocument
             self::ENCODING => 'encoding',
             // whether the document is standalone
             self::STANDALONE => 'xmlStandalone',
-        );
+        ];
         foreach ($xmlOptions as $xmlOption => $documentProperty) {
             if ($contextOption = $context[$xmlOption] ?? $this->defaultContext[$xmlOption] ?? false) {
                 $document->$documentProperty = $contextOption;
diff --git a/src/Symfony/Component/Serializer/Mapping/AttributeMetadata.php b/src/Symfony/Component/Serializer/Mapping/AttributeMetadata.php
index 9e8ebc6524c7..a49051113dc1 100644
--- a/src/Symfony/Component/Serializer/Mapping/AttributeMetadata.php
+++ b/src/Symfony/Component/Serializer/Mapping/AttributeMetadata.php
@@ -30,7 +30,7 @@ class AttributeMetadata implements AttributeMetadataInterface
      *           class' serialized representation. Do not access it. Use
      *           {@link getGroups()} instead.
      */
-    public $groups = array();
+    public $groups = [];
 
     /**
      * @var int|null
@@ -140,6 +140,6 @@ public function merge(AttributeMetadataInterface $attributeMetadata)
      */
     public function __sleep()
     {
-        return array('name', 'groups', 'maxDepth', 'serializedName');
+        return ['name', 'groups', 'maxDepth', 'serializedName'];
     }
 }
diff --git a/src/Symfony/Component/Serializer/NameConverter/AdvancedNameConverterInterface.php b/src/Symfony/Component/Serializer/NameConverter/AdvancedNameConverterInterface.php
index d0f94fdfc125..03abdf18baf1 100644
--- a/src/Symfony/Component/Serializer/NameConverter/AdvancedNameConverterInterface.php
+++ b/src/Symfony/Component/Serializer/NameConverter/AdvancedNameConverterInterface.php
@@ -21,10 +21,10 @@ interface AdvancedNameConverterInterface extends NameConverterInterface
     /**
      * {@inheritdoc}
      */
-    public function normalize($propertyName, string $class = null, string $format = null, array $context = array());
+    public function normalize($propertyName, string $class = null, string $format = null, array $context = []);
 
     /**
      * {@inheritdoc}
      */
-    public function denormalize($propertyName, string $class = null, string $format = null, array $context = array());
+    public function denormalize($propertyName, string $class = null, string $format = null, array $context = []);
 }
diff --git a/src/Symfony/Component/Serializer/NameConverter/MetadataAwareNameConverter.php b/src/Symfony/Component/Serializer/NameConverter/MetadataAwareNameConverter.php
index 51abde224602..a6934f54b818 100644
--- a/src/Symfony/Component/Serializer/NameConverter/MetadataAwareNameConverter.php
+++ b/src/Symfony/Component/Serializer/NameConverter/MetadataAwareNameConverter.php
@@ -25,11 +25,11 @@ final class MetadataAwareNameConverter implements AdvancedNameConverterInterface
      */
     private $fallbackNameConverter;
 
-    private static $normalizeCache = array();
+    private static $normalizeCache = [];
 
-    private static $denormalizeCache = array();
+    private static $denormalizeCache = [];
 
-    private static $attributesMetadataCache = array();
+    private static $attributesMetadataCache = [];
 
     public function __construct(ClassMetadataFactoryInterface $metadataFactory, NameConverterInterface $fallbackNameConverter = null)
     {
@@ -40,7 +40,7 @@ public function __construct(ClassMetadataFactoryInterface $metadataFactory, Name
     /**
      * {@inheritdoc}
      */
-    public function normalize($propertyName, string $class = null, string $format = null, array $context = array())
+    public function normalize($propertyName, string $class = null, string $format = null, array $context = [])
     {
         if (null === $class) {
             return $this->normalizeFallback($propertyName, $class, $format, $context);
@@ -56,7 +56,7 @@ public function normalize($propertyName, string $class = null, string $format =
     /**
      * {@inheritdoc}
      */
-    public function denormalize($propertyName, string $class = null, string $format = null, array $context = array())
+    public function denormalize($propertyName, string $class = null, string $format = null, array $context = [])
     {
         if (null === $class) {
             return $this->denormalizeFallback($propertyName, $class, $format, $context);
@@ -83,7 +83,7 @@ private function getCacheValueForNormalization(string $propertyName, string $cla
         return $attributesMetadata[$propertyName]->getSerializedName() ?? null;
     }
 
-    private function normalizeFallback(string $propertyName, string $class = null, string $format = null, array $context = array()): string
+    private function normalizeFallback(string $propertyName, string $class = null, string $format = null, array $context = []): string
     {
         return $this->fallbackNameConverter ? $this->fallbackNameConverter->normalize($propertyName, $class, $format, $context) : $propertyName;
     }
@@ -97,7 +97,7 @@ private function getCacheValueForDenormalization(string $propertyName, string $c
         return self::$attributesMetadataCache[$class][$propertyName] ?? null;
     }
 
-    private function denormalizeFallback(string $propertyName, string $class = null, string $format = null, array $context = array()): string
+    private function denormalizeFallback(string $propertyName, string $class = null, string $format = null, array $context = []): string
     {
         return $this->fallbackNameConverter ? $this->fallbackNameConverter->denormalize($propertyName, $class, $format, $context) : $propertyName;
     }
@@ -105,12 +105,12 @@ private function denormalizeFallback(string $propertyName, string $class = null,
     private function getCacheValueForAttributesMetadata(string $class): array
     {
         if (!$this->metadataFactory->hasMetadataFor($class)) {
-            return array();
+            return [];
         }
 
         $classMetadata = $this->metadataFactory->getMetadataFor($class);
 
-        $cache = array();
+        $cache = [];
         foreach ($classMetadata->getAttributesMetadata() as $name => $metadata) {
             if (null === $metadata->getSerializedName()) {
                 continue;
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
index ef2409bfb08e..34b02fed1d3e 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -47,11 +47,11 @@ abstract class AbstractNormalizer implements NormalizerInterface, DenormalizerIn
      */
     const CIRCULAR_REFERENCE_LIMIT_COUNTERS = 'circular_reference_limit_counters';
 
-    protected $defaultContext = array(
+    protected $defaultContext = [
         self::ALLOW_EXTRA_ATTRIBUTES => true,
         self::CIRCULAR_REFERENCE_LIMIT => 1,
-        self::IGNORED_ATTRIBUTES => array(),
-    );
+        self::IGNORED_ATTRIBUTES => [],
+    ];
 
     /**
      * @deprecated since Symfony 4.2
@@ -93,7 +93,7 @@ abstract class AbstractNormalizer implements NormalizerInterface, DenormalizerIn
     /**
      * Sets the {@link ClassMetadataFactoryInterface} to use.
      */
-    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, array $defaultContext = array())
+    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, array $defaultContext = [])
     {
         $this->classMetadataFactory = $classMetadataFactory;
         $this->nameConverter = $nameConverter;
@@ -245,7 +245,7 @@ protected function handleCircularReference($object/*, string $format = null, arr
             @trigger_error(sprintf('The "%s()" method will have two new "string $format = null" and "array $context = array()" arguments in version 5.0, not defining it is deprecated since Symfony 4.2.', __METHOD__), E_USER_DEPRECATED);
         }
         $format = \func_num_args() > 1 ? func_get_arg(1) : null;
-        $context = \func_num_args() > 2 ? func_get_arg(2) : array();
+        $context = \func_num_args() > 2 ? func_get_arg(2) : [];
 
         $circularReferenceHandler = $context[self::CIRCULAR_REFERENCE_HANDLER] ?? $this->defaultContext[self::CIRCULAR_REFERENCE_HANDLER] ?? $this->circularReferenceHandler;
         if ($circularReferenceHandler) {
@@ -419,7 +419,7 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
                     unset($data[$key]);
                 } elseif (array_key_exists($key, $context[static::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class] ?? [])) {
                     $params[] = $context[static::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class][$key];
-                } elseif (array_key_exists($key, $this->defaultContext[self::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class] ?? array())) {
+                } elseif (array_key_exists($key, $this->defaultContext[self::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class] ?? [])) {
                     $params[] = $this->defaultContext[self::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class][$key];
                 } elseif ($constructorParameter->isDefaultValueAvailable()) {
                     $params[] = $constructorParameter->getDefaultValue();
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index 8e8edde9374a..b17d1e8c59e1 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -40,8 +40,8 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
     const EXCLUDE_FROM_CACHE_KEY = 'exclude_from_cache_key';
 
     private $propertyTypeExtractor;
-    private $typesCache = array();
-    private $attributesCache = array();
+    private $typesCache = [];
+    private $attributesCache = [];
 
     /**
      * @deprecated since Symfony 4.2
@@ -56,10 +56,10 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
      */
     protected $classDiscriminatorResolver;
 
-    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, callable $objectClassResolver = null, array $defaultContext = array())
+    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, callable $objectClassResolver = null, array $defaultContext = [])
     {
         parent::__construct($classMetadataFactory, $nameConverter, $defaultContext);
-        $this->defaultContext[self::EXCLUDE_FROM_CACHE_KEY] = array(self::CIRCULAR_REFERENCE_LIMIT_COUNTERS);
+        $this->defaultContext[self::EXCLUDE_FROM_CACHE_KEY] = [self::CIRCULAR_REFERENCE_LIMIT_COUNTERS];
 
         $this->propertyTypeExtractor = $propertyTypeExtractor;
 
@@ -81,7 +81,7 @@ public function supportsNormalization($data, $format = null)
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
@@ -91,8 +91,8 @@ public function normalize($object, $format = null, array $context = array())
             return $this->handleCircularReference($object, $format, $context);
         }
 
-        $data = array();
-        $stack = array();
+        $data = [];
+        $stack = [];
         $attributes = $this->getAttributes($object, $format, $context);
         $class = $this->objectClassResolver ? ($this->objectClassResolver)($object) : \get_class($object);
         $attributesMetadata = $this->classMetadataFactory ? $this->classMetadataFactory->getMetadataFor($class)->getAttributesMetadata() : null;
@@ -110,7 +110,7 @@ public function normalize($object, $format = null, array $context = array())
             }
 
             /**
-             * @var $callback callable|null
+             * @var callable|null
              */
             $callback = $context[self::CALLBACKS][$attribute] ?? $this->defaultContext[self::CALLBACKS][$attribute] ?? $this->callbacks[$attribute] ?? null;
             if ($callback) {
@@ -211,7 +211,7 @@ protected function getAttributes($object, $format = null, array $context)
      *
      * @return string[]
      */
-    abstract protected function extractAttributes($object, $format = null, array $context = array());
+    abstract protected function extractAttributes($object, $format = null, array $context = []);
 
     /**
      * Gets the attribute value.
@@ -223,7 +223,7 @@ abstract protected function extractAttributes($object, $format = null, array $co
      *
      * @return mixed
      */
-    abstract protected function getAttributeValue($object, $attribute, $format = null, array $context = array());
+    abstract protected function getAttributeValue($object, $attribute, $format = null, array $context = []);
 
     /**
      * Sets a handler function that will be called when the max depth is reached.
@@ -248,7 +248,7 @@ public function supportsDenormalization($data, $type, $format = null)
     /**
      * {@inheritdoc}
      */
-    public function denormalize($data, $class, $format = null, array $context = array())
+    public function denormalize($data, $class, $format = null, array $context = [])
     {
         if (!isset($context['cache_key'])) {
             $context['cache_key'] = $this->getCacheKey($format, $context);
@@ -256,7 +256,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
 
         $allowedAttributes = $this->getAllowedAttributes($class, $context, true);
         $normalizedData = $this->prepareForDenormalization($data);
-        $extraAttributes = array();
+        $extraAttributes = [];
 
         $reflectionClass = new \ReflectionClass($class);
         $object = $this->instantiateObject($normalizedData, $class, $context, $reflectionClass, $allowedAttributes, $format);
@@ -298,7 +298,7 @@ public function denormalize($data, $class, $format = null, array $context = arra
      * @param string|null $format
      * @param array       $context
      */
-    abstract protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array());
+    abstract protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = []);
 
     /**
      * Validates the submitted data and denormalizes it.
@@ -316,7 +316,7 @@ private function validateAndDenormalize(string $currentClass, string $attribute,
             return $data;
         }
 
-        $expectedTypes = array();
+        $expectedTypes = [];
         foreach ($types as $type) {
             if (null === $data && $type->isNullable()) {
                 return;
@@ -329,7 +329,7 @@ private function validateAndDenormalize(string $currentClass, string $attribute,
                 // Fix a collection that contains the only one element
                 // This is special to xml format only
                 if ('xml' === $format && !\is_int(key($data))) {
-                    $data = array($data);
+                    $data = [$data];
                 }
 
                 if (null !== $collectionKeyType = $type->getCollectionKeyType()) {
@@ -407,9 +407,9 @@ private function getTypes(string $currentClass, string $attribute)
 
         if (null !== $this->classDiscriminatorResolver && null !== $discriminatorMapping = $this->classDiscriminatorResolver->getMappingForClass($currentClass)) {
             if ($discriminatorMapping->getTypeProperty() === $attribute) {
-                return $this->typesCache[$key] = array(
+                return $this->typesCache[$key] = [
                     new Type(Type::BUILTIN_TYPE_STRING),
-                );
+                ];
             }
 
             foreach ($discriminatorMapping->getTypesMapping() as $mappedClass) {
diff --git a/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
index dc24f6ec16bd..aa45a0fc1b33 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
@@ -31,7 +31,7 @@ class ConstraintViolationListNormalizer implements NormalizerInterface, Cacheabl
 
     private $defaultContext;
 
-    public function __construct($defaultContext = array())
+    public function __construct($defaultContext = [])
     {
         $this->defaultContext = $defaultContext;
     }
@@ -39,17 +39,17 @@ public function __construct($defaultContext = array())
     /**
      * {@inheritdoc}
      */
-    public function normalize($object, $format = null, array $context = array())
+    public function normalize($object, $format = null, array $context = [])
     {
-        $violations = array();
-        $messages = array();
+        $violations = [];
+        $messages = [];
         foreach ($object as $violation) {
             $propertyPath = $violation->getPropertyPath();
 
-            $violationEntry = array(
+            $violationEntry = [
                 'propertyPath' => $propertyPath,
                 'title' => $violation->getMessage(),
-            );
+            ];
             if (null !== $code = $violation->getCode()) {
                 $violationEntry['type'] = sprintf('urn:uuid:%s', $code);
             }
@@ -60,10 +60,10 @@ public function normalize($object, $format = null, array $context = array())
             $messages[] = $prefix.$violation->getMessage();
         }
 
-        $result = array(
+        $result = [
             'type' => $context[self::TYPE] ?? $this->defaultContext[self::TYPE] ?? 'https://symfony.com/errors/validation',
             'title' => $context[self::TITLE] ?? $this->defaultContext[self::TITLE] ?? 'Validation Failed',
-        );
+        ];
         if (null !== $status = ($context[self::STATUS] ?? $this->defaultContext[self::STATUS] ?? null)) {
             $result['status'] = $status;
         }
@@ -74,7 +74,7 @@ public function normalize($object, $format = null, array $context = array())
             $result['instance'] = $instance;
         }
 
-        return $result + array('violations' => $violations);
+        return $result + ['violations' => $violations];
     }
 
     /**
diff --git a/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
index 16d28a17ec80..0b2d4214bf32 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
@@ -24,19 +24,19 @@ class DateIntervalNormalizer implements NormalizerInterface, DenormalizerInterfa
 {
     const FORMAT_KEY = 'dateinterval_format';
 
-    private $defaultContext = array(
+    private $defaultContext = [
         self::FORMAT_KEY => 'P%yY%mM%dDT%hH%iM%sS',
-    );
+    ];
 
     /**
      * @param array $defaultContext
      */
-    public function __construct($defaultContext = array())
+    public function __construct($defaultContext = [])
     {
         if (!\is_array($defaultContext)) {
             @trigger_error(sprintf('The "format" parameter is deprecated since Symfony 4.2, use the "%s" key of the context instead.', self::FORMAT_KEY), E_USER_DEPRECATED);
 
-            $defaultContext = array(self::FORMAT_KEY => (string) $defaultContext);
+            $defaultContext = [self::FORMAT_KEY => (string) $defaultContext];
         }
 
         $this->defaultContext = array_merge($this->defaultContext, $defaultContext);
diff --git a/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
index 9d3058ff5cc1..d3de806e186a 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
@@ -36,17 +36,17 @@ class DateTimeNormalizer implements NormalizerInterface, DenormalizerInterface,
     /**
      * @param array $defaultContext
      */
-    public function __construct($defaultContext = array(), \DateTimeZone $timezone = null)
+    public function __construct($defaultContext = [], \DateTimeZone $timezone = null)
     {
-        $this->defaultContext = array(
+        $this->defaultContext = [
             self::FORMAT_KEY => \DateTime::RFC3339,
             self::TIMEZONE_KEY => null,
-        );
+        ];
 
         if (!\is_array($defaultContext)) {
             @trigger_error('Passing configuration options directly to the constructor is deprecated since Symfony 4.2, use the default context instead.', E_USER_DEPRECATED);
 
-            $defaultContext = array(self::FORMAT_KEY => (string) $defaultContext);
+            $defaultContext = [self::FORMAT_KEY => (string) $defaultContext];
             $defaultContext[self::TIMEZONE_KEY] = $timezone;
         }
 
diff --git a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
index 2270c24b7688..530f168c6a7b 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php
@@ -32,7 +32,7 @@ class ObjectNormalizer extends AbstractObjectNormalizer
 
     private $discriminatorCache = [];
 
-    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyAccessorInterface $propertyAccessor = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, callable $objectClassResolver = null, array $defaultContext = array())
+    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyAccessorInterface $propertyAccessor = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null, ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, callable $objectClassResolver = null, array $defaultContext = [])
     {
         if (!\class_exists(PropertyAccess::class)) {
             throw new LogicException('The ObjectNormalizer class requires the "PropertyAccess" component. Install "symfony/property-access" to use it.');
diff --git a/src/Symfony/Component/Serializer/Serializer.php b/src/Symfony/Component/Serializer/Serializer.php
index f7daa6f73f3d..3aefec553e7d 100644
--- a/src/Symfony/Component/Serializer/Serializer.php
+++ b/src/Symfony/Component/Serializer/Serializer.php
@@ -58,17 +58,17 @@ class Serializer implements SerializerInterface, ContextAwareNormalizerInterface
     /**
      * @internal since Symfony 4.1
      */
-    protected $normalizers = array();
+    protected $normalizers = [];
 
     private $cachedNormalizers;
-    private $denormalizerCache = array();
-    private $normalizerCache = array();
+    private $denormalizerCache = [];
+    private $normalizerCache = [];
 
     /**
      * @param (NormalizerInterface|DenormalizerInterface)[] $normalizers
      * @param (EncoderInterface|DecoderInterface)[]         $encoders
      */
-    public function __construct(array $normalizers = array(), array $encoders = array())
+    public function __construct(array $normalizers = [], array $encoders = [])
     {
         foreach ($normalizers as $normalizer) {
             if ($normalizer instanceof SerializerAwareInterface) {
@@ -90,8 +90,8 @@ public function __construct(array $normalizers = array(), array $encoders = arra
         }
         $this->normalizers = $normalizers;
 
-        $decoders = array();
-        $realEncoders = array();
+        $decoders = [];
+        $realEncoders = [];
         foreach ($encoders as $encoder) {
             if ($encoder instanceof SerializerAwareInterface) {
                 $encoder->setSerializer($this);
@@ -115,7 +115,7 @@ public function __construct(array $normalizers = array(), array $encoders = arra
     /**
      * {@inheritdoc}
      */
-    final public function serialize($data, $format, array $context = array())
+    final public function serialize($data, $format, array $context = [])
     {
         if (!$this->supportsEncoding($format, $context)) {
             throw new NotEncodableValueException(sprintf('Serialization for the format %s is not supported', $format));
@@ -131,7 +131,7 @@ final public function serialize($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    final public function deserialize($data, $type, $format, array $context = array())
+    final public function deserialize($data, $type, $format, array $context = [])
     {
         if (!$this->supportsDecoding($format, $context)) {
             throw new NotEncodableValueException(sprintf('Deserialization for the format %s is not supported', $format));
@@ -145,7 +145,7 @@ final public function deserialize($data, $type, $format, array $context = array(
     /**
      * {@inheritdoc}
      */
-    public function normalize($data, $format = null, array $context = array())
+    public function normalize($data, $format = null, array $context = [])
     {
         // If a normalizer supports the given data, use it
         if ($normalizer = $this->getNormalizer($data, $format, $context)) {
@@ -157,7 +157,7 @@ public function normalize($data, $format = null, array $context = array())
         }
 
         if (\is_array($data) || $data instanceof \Traversable) {
-            $normalized = array();
+            $normalized = [];
             foreach ($data as $key => $val) {
                 $normalized[$key] = $this->normalize($val, $format, $context);
             }
@@ -181,7 +181,7 @@ public function normalize($data, $format = null, array $context = array())
      *
      * @throws NotNormalizableValueException
      */
-    public function denormalize($data, $type, $format = null, array $context = array())
+    public function denormalize($data, $type, $format = null, array $context = [])
     {
         if (!$this->normalizers) {
             throw new LogicException('You must register at least one normalizer to be able to denormalize objects.');
@@ -197,7 +197,7 @@ public function denormalize($data, $type, $format = null, array $context = array
     /**
      * {@inheritdoc}
      */
-    public function supportsNormalization($data, $format = null, array $context = array())
+    public function supportsNormalization($data, $format = null, array $context = [])
     {
         return null !== $this->getNormalizer($data, $format, $context);
     }
@@ -205,7 +205,7 @@ public function supportsNormalization($data, $format = null, array $context = ar
     /**
      * {@inheritdoc}
      */
-    public function supportsDenormalization($data, $type, $format = null, array $context = array())
+    public function supportsDenormalization($data, $type, $format = null, array $context = [])
     {
         return null !== $this->getDenormalizer($data, $type, $format, $context);
     }
@@ -223,12 +223,12 @@ private function getNormalizer($data, ?string $format, array $context)
     {
         if ($this->cachedNormalizers !== $this->normalizers) {
             $this->cachedNormalizers = $this->normalizers;
-            $this->denormalizerCache = $this->normalizerCache = array();
+            $this->denormalizerCache = $this->normalizerCache = [];
         }
         $type = \is_object($data) ? \get_class($data) : 'native-'.\gettype($data);
 
         if (!isset($this->normalizerCache[$format][$type])) {
-            $this->normalizerCache[$format][$type] = array();
+            $this->normalizerCache[$format][$type] = [];
 
             foreach ($this->normalizers as $k => $normalizer) {
                 if (!$normalizer instanceof NormalizerInterface) {
@@ -266,10 +266,10 @@ private function getDenormalizer($data, string $class, ?string $format, array $c
     {
         if ($this->cachedNormalizers !== $this->normalizers) {
             $this->cachedNormalizers = $this->normalizers;
-            $this->denormalizerCache = $this->normalizerCache = array();
+            $this->denormalizerCache = $this->normalizerCache = [];
         }
         if (!isset($this->denormalizerCache[$format][$class])) {
-            $this->denormalizerCache[$format][$class] = array();
+            $this->denormalizerCache[$format][$class] = [];
 
             foreach ($this->normalizers as $k => $normalizer) {
                 if (!$normalizer instanceof DenormalizerInterface) {
@@ -296,7 +296,7 @@ private function getDenormalizer($data, string $class, ?string $format, array $c
     /**
      * {@inheritdoc}
      */
-    final public function encode($data, $format, array $context = array())
+    final public function encode($data, $format, array $context = [])
     {
         return $this->encoder->encode($data, $format, $context);
     }
@@ -304,7 +304,7 @@ final public function encode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    final public function decode($data, $format, array $context = array())
+    final public function decode($data, $format, array $context = [])
     {
         return $this->decoder->decode($data, $format, $context);
     }
@@ -312,7 +312,7 @@ final public function decode($data, $format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function supportsEncoding($format, array $context = array())
+    public function supportsEncoding($format, array $context = [])
     {
         return $this->encoder->supportsEncoding($format, $context);
     }
@@ -320,7 +320,7 @@ public function supportsEncoding($format, array $context = array())
     /**
      * {@inheritdoc}
      */
-    public function supportsDecoding($format, array $context = array())
+    public function supportsDecoding($format, array $context = [])
     {
         return $this->decoder->supportsDecoding($format, $context);
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Annotation/SerializedNameTest.php b/src/Symfony/Component/Serializer/Tests/Annotation/SerializedNameTest.php
index 45a18db69bd7..1b6f4ff9f032 100644
--- a/src/Symfony/Component/Serializer/Tests/Annotation/SerializedNameTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Annotation/SerializedNameTest.php
@@ -25,15 +25,15 @@ class SerializedNameTest extends TestCase
      */
     public function testNotSetSerializedNameParameter()
     {
-        new SerializedName(array());
+        new SerializedName([]);
     }
 
     public function provideInvalidValues()
     {
-        return array(
-            array(''),
-            array(0),
-        );
+        return [
+            [''],
+            [0],
+        ];
     }
 
     /**
@@ -44,12 +44,12 @@ public function provideInvalidValues()
      */
     public function testNotAStringSerializedNameParameter($value)
     {
-        new SerializedName(array('value' => $value));
+        new SerializedName(['value' => $value]);
     }
 
     public function testSerializedNameParameters()
     {
-        $maxDepth = new SerializedName(array('value' => 'foo'));
+        $maxDepth = new SerializedName(['value' => 'foo']);
         $this->assertEquals('foo', $maxDepth->getSerializedName());
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
index 65ced222a976..66ffe2d70cd8 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/CsvEncoderTest.php
@@ -37,7 +37,7 @@ public function testSupportEncoding()
 
     public function testEncode()
     {
-        $value = array('foo' => 'hello', 'bar' => 'hey ho');
+        $value = ['foo' => 'hello', 'bar' => 'hey ho'];
 
         $this->assertEquals(<<<'CSV'
 foo,bar
@@ -49,10 +49,10 @@ public function testEncode()
 
     public function testEncodeCollection()
     {
-        $value = array(
-            array('foo' => 'hello', 'bar' => 'hey ho'),
-            array('foo' => 'hi', 'bar' => 'let\'s go'),
-        );
+        $value = [
+            ['foo' => 'hello', 'bar' => 'hey ho'],
+            ['foo' => 'hi', 'bar' => 'let\'s go'],
+        ];
 
         $this->assertEquals(<<<'CSV'
 foo,bar
@@ -70,7 +70,7 @@ public function testEncodePlainIndexedArray()
 a,b,c
 
 CSV
-            , $this->encoder->encode(array('a', 'b', 'c'), 'csv'));
+            , $this->encoder->encode(['a', 'b', 'c'], 'csv'));
     }
 
     public function testEncodeNonArray()
@@ -85,10 +85,10 @@ public function testEncodeNonArray()
 
     public function testEncodeNestedArrays()
     {
-        $value = array('foo' => 'hello', 'bar' => array(
-            array('id' => 'yo', 1 => 'wesh'),
-            array('baz' => 'Halo', 'foo' => 'olá'),
-        ));
+        $value = ['foo' => 'hello', 'bar' => [
+            ['id' => 'yo', 1 => 'wesh'],
+            ['baz' => 'Halo', 'foo' => 'olá'],
+        ]];
 
         $this->assertEquals(<<<'CSV'
 foo,bar.0.id,bar.0.1,bar.1.baz,bar.1.foo
@@ -113,15 +113,15 @@ private function doTestEncodeCustomSettings(bool $legacy = false)
         if ($legacy) {
             $this->encoder = new CsvEncoder(';', "'", '|', '-');
         } else {
-            $this->encoder = new CsvEncoder(array(
+            $this->encoder = new CsvEncoder([
                 CsvEncoder::DELIMITER_KEY => ';',
                 CsvEncoder::ENCLOSURE_KEY => "'",
                 CsvEncoder::ESCAPE_CHAR_KEY => '|',
                 CsvEncoder::KEY_SEPARATOR_KEY => '-',
-            ));
+            ]);
         }
 
-        $value = array('a' => 'he\'llo', 'c' => array('d' => 'foo'));
+        $value = ['a' => 'he\'llo', 'c' => ['d' => 'foo']];
 
         $this->assertEquals(<<<'CSV'
 a;c-d
@@ -133,34 +133,34 @@ private function doTestEncodeCustomSettings(bool $legacy = false)
 
     public function testEncodeCustomSettingsPassedInContext()
     {
-        $value = array('a' => 'he\'llo', 'c' => array('d' => 'foo'));
+        $value = ['a' => 'he\'llo', 'c' => ['d' => 'foo']];
 
         $this->assertSame(<<<'CSV'
 a;c-d
 'he''llo';foo
 
 CSV
-        , $this->encoder->encode($value, 'csv', array(
+        , $this->encoder->encode($value, 'csv', [
             CsvEncoder::DELIMITER_KEY => ';',
             CsvEncoder::ENCLOSURE_KEY => "'",
             CsvEncoder::ESCAPE_CHAR_KEY => '|',
             CsvEncoder::KEY_SEPARATOR_KEY => '-',
-        )));
+        ]));
     }
 
     public function testEncodeEmptyArray()
     {
-        $this->assertEquals("\n\n", $this->encoder->encode(array(), 'csv'));
-        $this->assertEquals("\n\n", $this->encoder->encode(array(array()), 'csv'));
+        $this->assertEquals("\n\n", $this->encoder->encode([], 'csv'));
+        $this->assertEquals("\n\n", $this->encoder->encode([[]], 'csv'));
     }
 
     public function testEncodeVariableStructure()
     {
-        $value = array(
-            array('a' => array('foo', 'bar')),
-            array('a' => array(), 'b' => 'baz'),
-            array('a' => array('bar', 'foo'), 'c' => 'pong'),
-        );
+        $value = [
+            ['a' => ['foo', 'bar']],
+            ['a' => [], 'b' => 'baz'],
+            ['a' => ['bar', 'foo'], 'c' => 'pong'],
+        ];
         $csv = <<<CSV
 a.0,a.1,c,b
 foo,bar,,
@@ -174,15 +174,15 @@ public function testEncodeVariableStructure()
 
     public function testEncodeCustomHeaders()
     {
-        $context = array(
-            CsvEncoder::HEADERS_KEY => array(
+        $context = [
+            CsvEncoder::HEADERS_KEY => [
                 'b',
                 'c',
-            ),
-        );
-        $value = array(
-            array('a' => 'foo', 'b' => 'bar'),
-        );
+            ],
+        ];
+        $value = [
+            ['a' => 'foo', 'b' => 'bar'],
+        ];
         $csv = <<<CSV
 b,c,a
 bar,,foo
@@ -207,7 +207,7 @@ private function doTestEncodeFormulas(bool $legacy = false)
         if ($legacy) {
             $this->encoder = new CsvEncoder(',', '"', '\\', '.', true);
         } else {
-            $this->encoder = new CsvEncoder(array(CsvEncoder::ESCAPE_FORMULAS_KEY => true));
+            $this->encoder = new CsvEncoder([CsvEncoder::ESCAPE_FORMULAS_KEY => true]);
         }
 
         $this->assertSame(<<<'CSV'
@@ -215,28 +215,28 @@ private function doTestEncodeFormulas(bool $legacy = false)
 "	=2+3"
 
 CSV
-            , $this->encoder->encode(array('=2+3'), 'csv'));
+            , $this->encoder->encode(['=2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 "	-2+3"
 
 CSV
-            , $this->encoder->encode(array('-2+3'), 'csv'));
+            , $this->encoder->encode(['-2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 "	+2+3"
 
 CSV
-            , $this->encoder->encode(array('+2+3'), 'csv'));
+            , $this->encoder->encode(['+2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 "	@MyDataColumn"
 
 CSV
-            , $this->encoder->encode(array('@MyDataColumn'), 'csv'));
+            , $this->encoder->encode(['@MyDataColumn'], 'csv'));
     }
 
     public function testDoNotEncodeFormulas()
@@ -246,28 +246,28 @@ public function testDoNotEncodeFormulas()
 =2+3
 
 CSV
-            , $this->encoder->encode(array('=2+3'), 'csv'));
+            , $this->encoder->encode(['=2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 -2+3
 
 CSV
-            , $this->encoder->encode(array('-2+3'), 'csv'));
+            , $this->encoder->encode(['-2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 +2+3
 
 CSV
-            , $this->encoder->encode(array('+2+3'), 'csv'));
+            , $this->encoder->encode(['+2+3'], 'csv'));
 
         $this->assertSame(<<<'CSV'
 0
 @MyDataColumn
 
 CSV
-            , $this->encoder->encode(array('@MyDataColumn'), 'csv'));
+            , $this->encoder->encode(['@MyDataColumn'], 'csv'));
     }
 
     public function testEncodeFormulasWithSettingsPassedInContext()
@@ -277,36 +277,36 @@ public function testEncodeFormulasWithSettingsPassedInContext()
 "	=2+3"
 
 CSV
-            , $this->encoder->encode(array('=2+3'), 'csv', array(
+            , $this->encoder->encode(['=2+3'], 'csv', [
                 CsvEncoder::ESCAPE_FORMULAS_KEY => true,
-            )));
+            ]));
 
         $this->assertSame(<<<'CSV'
 0
 "	-2+3"
 
 CSV
-            , $this->encoder->encode(array('-2+3'), 'csv', array(
+            , $this->encoder->encode(['-2+3'], 'csv', [
                 CsvEncoder::ESCAPE_FORMULAS_KEY => true,
-            )));
+            ]));
 
         $this->assertSame(<<<'CSV'
 0
 "	+2+3"
 
 CSV
-            , $this->encoder->encode(array('+2+3'), 'csv', array(
+            , $this->encoder->encode(['+2+3'], 'csv', [
                 CsvEncoder::ESCAPE_FORMULAS_KEY => true,
-            )));
+            ]));
 
         $this->assertSame(<<<'CSV'
 0
 "	@MyDataColumn"
 
 CSV
-            , $this->encoder->encode(array('@MyDataColumn'), 'csv', array(
+            , $this->encoder->encode(['@MyDataColumn'], 'csv', [
                 CsvEncoder::ESCAPE_FORMULAS_KEY => true,
-            )));
+            ]));
     }
 
     public function testSupportsDecoding()
@@ -321,7 +321,7 @@ public function testSupportsDecoding()
      */
     public function testDecodeLegacy()
     {
-        $expected = array('foo' => 'a', 'bar' => 'b');
+        $expected = ['foo' => 'a', 'bar' => 'b'];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar
@@ -332,22 +332,22 @@ public function testDecodeLegacy()
 
     public function testDecodeAsSingle()
     {
-        $expected = array('foo' => 'a', 'bar' => 'b');
+        $expected = ['foo' => 'a', 'bar' => 'b'];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar
 a,b
 CSV
-        , 'csv', array(CsvEncoder::AS_COLLECTION_KEY => false)));
+        , 'csv', [CsvEncoder::AS_COLLECTION_KEY => false]));
     }
 
     public function testDecodeCollection()
     {
-        $expected = array(
-            array('foo' => 'a', 'bar' => 'b'),
-            array('foo' => 'c', 'bar' => 'd'),
-            array('foo' => 'f'),
-        );
+        $expected = [
+            ['foo' => 'a', 'bar' => 'b'],
+            ['foo' => 'c', 'bar' => 'd'],
+            ['foo' => 'f'],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar
@@ -361,28 +361,28 @@ public function testDecodeCollection()
 
     public function testDecode()
     {
-        $expected = array(
-            array('foo' => 'a'),
-        );
+        $expected = [
+            ['foo' => 'a'],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo
 a
 
 CSV
-        , 'csv', array(
+        , 'csv', [
             CsvEncoder::AS_COLLECTION_KEY => true, // Can be removed in 5.0
-        )));
+        ]));
     }
 
     public function testDecodeToManyRelation()
     {
-        $expected = array(
-            array('foo' => 'bar', 'relations' => array(array('a' => 'b'), array('a' => 'b'))),
-            array('foo' => 'bat', 'relations' => array(array('a' => 'b'), array('a' => ''))),
-            array('foo' => 'bat', 'relations' => array(array('a' => 'b'))),
-            array('foo' => 'baz', 'relations' => array(array('a' => 'c'), array('a' => 'c'))),
-        );
+        $expected = [
+            ['foo' => 'bar', 'relations' => [['a' => 'b'], ['a' => 'b']]],
+            ['foo' => 'bat', 'relations' => [['a' => 'b'], ['a' => '']]],
+            ['foo' => 'bat', 'relations' => [['a' => 'b']]],
+            ['foo' => 'baz', 'relations' => [['a' => 'c'], ['a' => 'c']]],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,relations.0.a,relations.1.a
@@ -396,10 +396,10 @@ public function testDecodeToManyRelation()
 
     public function testDecodeNestedArrays()
     {
-        $expected = array(
-            array('foo' => 'a', 'bar' => array('baz' => array('bat' => 'b'))),
-            array('foo' => 'c', 'bar' => array('baz' => array('bat' => 'd'))),
-        );
+        $expected = [
+            ['foo' => 'a', 'bar' => ['baz' => ['bat' => 'b']]],
+            ['foo' => 'c', 'bar' => ['baz' => ['bat' => 'd']]],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar.baz.bat
@@ -424,47 +424,47 @@ private function doTestDecodeCustomSettings(bool $legacy = false)
         if ($legacy) {
             $this->encoder = new CsvEncoder(';', "'", '|', '-');
         } else {
-            $this->encoder = new CsvEncoder(array(
+            $this->encoder = new CsvEncoder([
                 CsvEncoder::DELIMITER_KEY => ';',
                 CsvEncoder::ENCLOSURE_KEY => "'",
                 CsvEncoder::ESCAPE_CHAR_KEY => '|',
                 CsvEncoder::KEY_SEPARATOR_KEY => '-',
-            ));
+            ]);
         }
 
-        $expected = array(array('a' => 'hell\'o', 'bar' => array('baz' => 'b')));
+        $expected = [['a' => 'hell\'o', 'bar' => ['baz' => 'b']]];
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 a;bar-baz
 'hell''o';b;c
 CSV
-        , 'csv', array(
+        , 'csv', [
             CsvEncoder::AS_COLLECTION_KEY => true, // Can be removed in 5.0
-        )));
+        ]));
     }
 
     public function testDecodeCustomSettingsPassedInContext()
     {
-        $expected = array(array('a' => 'hell\'o', 'bar' => array('baz' => 'b')));
+        $expected = [['a' => 'hell\'o', 'bar' => ['baz' => 'b']]];
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 a;bar-baz
 'hell''o';b;c
 CSV
-        , 'csv', array(
+        , 'csv', [
             CsvEncoder::DELIMITER_KEY => ';',
             CsvEncoder::ENCLOSURE_KEY => "'",
             CsvEncoder::ESCAPE_CHAR_KEY => '|',
             CsvEncoder::KEY_SEPARATOR_KEY => '-',
             CsvEncoder::AS_COLLECTION_KEY => true, // Can be removed in 5.0
-        )));
+        ]));
     }
 
     public function testDecodeMalformedCollection()
     {
-        $expected = array(
-            array('foo' => 'a', 'bar' => 'b'),
-            array('foo' => 'c', 'bar' => 'd'),
-            array('foo' => 'f'),
-        );
+        $expected = [
+            ['foo' => 'a', 'bar' => 'b'],
+            ['foo' => 'c', 'bar' => 'd'],
+            ['foo' => 'f'],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode(<<<'CSV'
 foo,bar
@@ -478,6 +478,6 @@ public function testDecodeMalformedCollection()
 
     public function testDecodeEmptyArray()
     {
-        $this->assertEquals(array(), $this->encoder->decode('', 'csv'));
+        $this->assertEquals([], $this->encoder->decode('', 'csv'));
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
index 6ef68c13f926..53b7f7b69158 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
@@ -32,7 +32,7 @@ class XmlEncoderTest extends TestCase
     protected function setUp()
     {
         $this->encoder = new XmlEncoder();
-        $serializer = new Serializer(array(new CustomNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([new CustomNormalizer()], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
     }
 
@@ -74,19 +74,19 @@ public function testDocTypeIsNotAllowed()
     public function testAttributes()
     {
         $obj = new ScalarDummy();
-        $obj->xmlFoo = array(
-            'foo-bar' => array(
+        $obj->xmlFoo = [
+            'foo-bar' => [
                 '@id' => 1,
                 '@name' => 'Bar',
-            ),
-            'Foo' => array(
+            ],
+            'Foo' => [
                 'Bar' => 'Test',
                 '@Type' => 'test',
-            ),
+            ],
             'föo_bär' => 'a',
-            'Bar' => array(1, 2, 3),
+            'Bar' => [1, 2, 3],
             'a' => 'b',
-        );
+        ];
         $expected = '<?xml version="1.0"?>'."\n".
             '<response>'.
             '<foo-bar id="1" name="Bar"/>'.
@@ -103,11 +103,11 @@ public function testAttributes()
     public function testElementNameValid()
     {
         $obj = new ScalarDummy();
-        $obj->xmlFoo = array(
+        $obj->xmlFoo = [
             'foo-bar' => 'a',
             'foo_bar' => 'a',
             'föo_bär' => 'a',
-        );
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response>'.
@@ -122,7 +122,7 @@ public function testElementNameValid()
     public function testEncodeSimpleXML()
     {
         $xml = simplexml_load_string('<firstname>Peter</firstname>');
-        $array = array('person' => $xml);
+        $array = ['person' => $xml];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><person><firstname>Peter</firstname></person></response>'."\n";
@@ -133,35 +133,35 @@ public function testEncodeSimpleXML()
     public function testEncodeXmlAttributes()
     {
         $xml = simplexml_load_string('<firstname>Peter</firstname>');
-        $array = array('person' => $xml);
+        $array = ['person' => $xml];
 
         $expected = '<?xml version="1.1" encoding="utf-8" standalone="yes"?>'."\n".
             '<response><person><firstname>Peter</firstname></person></response>'."\n";
 
-        $context = array(
+        $context = [
             'xml_version' => '1.1',
             'xml_encoding' => 'utf-8',
             'xml_standalone' => true,
-        );
+        ];
 
         $this->assertSame($expected, $this->encoder->encode($array, 'xml', $context));
     }
 
     public function testEncodeRemovingEmptyTags()
     {
-        $array = array('person' => array('firstname' => 'Peter', 'lastname' => null));
+        $array = ['person' => ['firstname' => 'Peter', 'lastname' => null]];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><person><firstname>Peter</firstname></person></response>'."\n";
 
-        $context = array('remove_empty_tags' => true);
+        $context = ['remove_empty_tags' => true];
 
         $this->assertSame($expected, $this->encoder->encode($array, 'xml', $context));
     }
 
     public function testEncodeNotRemovingEmptyTags()
     {
-        $array = array('person' => array('firstname' => 'Peter', 'lastname' => null));
+        $array = ['person' => ['firstname' => 'Peter', 'lastname' => null]];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><person><firstname>Peter</firstname><lastname/></person></response>'."\n";
@@ -171,7 +171,7 @@ public function testEncodeNotRemovingEmptyTags()
 
     public function testContext()
     {
-        $array = array('person' => array('name' => 'George Abitbol'));
+        $array = ['person' => ['name' => 'George Abitbol']];
         $expected = <<<'XML'
 <?xml version="1.0"?>
 <response>
@@ -182,19 +182,19 @@ public function testContext()
 
 XML;
 
-        $context = array(
+        $context = [
             'xml_format_output' => true,
-        );
+        ];
 
         $this->assertSame($expected, $this->encoder->encode($array, 'xml', $context));
     }
 
     public function testEncodeScalarRootAttributes()
     {
-        $array = array(
+        $array = [
             '#' => 'Paul',
             '@gender' => 'm',
-        );
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response gender="m">Paul</response>'."\n";
@@ -204,10 +204,10 @@ public function testEncodeScalarRootAttributes()
 
     public function testEncodeRootAttributes()
     {
-        $array = array(
+        $array = [
             'firstname' => 'Paul',
             '@gender' => 'm',
-        );
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response gender="m"><firstname>Paul</firstname></response>'."\n";
@@ -217,9 +217,9 @@ public function testEncodeRootAttributes()
 
     public function testEncodeCdataWrapping()
     {
-        $array = array(
+        $array = [
             'firstname' => 'Paul <or Me>',
-        );
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><firstname><![CDATA[Paul <or Me>]]></firstname></response>'."\n";
@@ -229,9 +229,9 @@ public function testEncodeCdataWrapping()
 
     public function testEncodeScalarWithAttribute()
     {
-        $array = array(
-            'person' => array('@gender' => 'M', '#' => 'Peter'),
-        );
+        $array = [
+            'person' => ['@gender' => 'M', '#' => 'Peter'],
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<response><person gender="M">Peter</person></response>'."\n";
@@ -254,7 +254,7 @@ public function testDecodeBigDigitAttributes()
 <document index="182077241760011681341821060401202210011000045913000000017100">Name</document>
 XML;
 
-        $this->assertSame(array('@index' => 182077241760011681341821060401202210011000045913000000017100, '#' => 'Name'), $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => 182077241760011681341821060401202210011000045913000000017100, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testDecodeNegativeIntAttribute()
@@ -264,7 +264,7 @@ public function testDecodeNegativeIntAttribute()
 <document index="-1234">Name</document>
 XML;
 
-        $this->assertSame(array('@index' => -1234, '#' => 'Name'), $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => -1234, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testDecodeFloatAttribute()
@@ -274,7 +274,7 @@ public function testDecodeFloatAttribute()
 <document index="-12.11">Name</document>
 XML;
 
-        $this->assertSame(array('@index' => -12.11, '#' => 'Name'), $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => -12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testDecodeNegativeFloatAttribute()
@@ -284,7 +284,7 @@ public function testDecodeNegativeFloatAttribute()
 <document index="-12.11">Name</document>
 XML;
 
-        $this->assertSame(array('@index' => -12.11, '#' => 'Name'), $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => -12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testNoTypeCastAttribute()
@@ -296,16 +296,16 @@ public function testNoTypeCastAttribute()
 </document>
 XML;
 
-        $data = $this->encoder->decode($source, 'xml', array('xml_type_cast_attributes' => false));
-        $expected = array(
+        $data = $this->encoder->decode($source, 'xml', ['xml_type_cast_attributes' => false]);
+        $expected = [
             '@a' => '018',
             '@b' => '-12.11',
-            'node' => array(
+            'node' => [
                 '@a' => '018',
                 '@b' => '-12.11',
                 '#' => '',
-            ),
-        );
+            ],
+        ];
         $this->assertSame($expected, $data);
     }
 
@@ -327,14 +327,14 @@ public function testEncodeWithNamespace()
 
     public function testEncodeSerializerXmlRootNodeNameOption()
     {
-        $options = array('xml_root_node_name' => 'test');
+        $options = ['xml_root_node_name' => 'test'];
         $this->encoder = new XmlEncoder();
-        $serializer = new Serializer(array(), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
 
-        $array = array(
-            'person' => array('@gender' => 'M', '#' => 'Peter'),
-        );
+        $array = [
+            'person' => ['@gender' => 'M', '#' => 'Peter'],
+        ];
 
         $expected = '<?xml version="1.0"?>'."\n".
             '<test><person gender="M">Peter</person></test>'."\n";
@@ -345,7 +345,7 @@ public function testEncodeSerializerXmlRootNodeNameOption()
     public function testEncodeTraversableWhenNormalizable()
     {
         $this->encoder = new XmlEncoder();
-        $serializer = new Serializer(array(new CustomNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([new CustomNormalizer()], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
 
         $expected = <<<'XML'
@@ -367,9 +367,9 @@ public function testDecode()
 
     public function testDecodeCdataWrapping()
     {
-        $expected = array(
+        $expected = [
             'firstname' => 'Paul <or Me>',
-        );
+        ];
 
         $xml = '<?xml version="1.0"?>'."\n".
             '<response><firstname><![CDATA[Paul <or Me>]]></firstname></response>'."\n";
@@ -379,9 +379,9 @@ public function testDecodeCdataWrapping()
 
     public function testDecodeCdataWrappingAndWhitespace()
     {
-        $expected = array(
+        $expected = [
             'firstname' => 'Paul <or Me>',
-        );
+        ];
 
         $xml = '<?xml version="1.0"?>'."\n".
             '<response><firstname>'."\n".
@@ -403,9 +403,9 @@ public function testDecodeScalarWithAttribute()
         $source = '<?xml version="1.0"?>'."\n".
             '<response><person gender="M">Peter</person></response>'."\n";
 
-        $expected = array(
-            'person' => array('@gender' => 'M', '#' => 'Peter'),
-        );
+        $expected = [
+            'person' => ['@gender' => 'M', '#' => 'Peter'],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -415,10 +415,10 @@ public function testDecodeScalarRootAttributes()
         $source = '<?xml version="1.0"?>'."\n".
             '<person gender="M">Peter</person>'."\n";
 
-        $expected = array(
+        $expected = [
             '#' => 'Peter',
             '@gender' => 'M',
-        );
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -428,11 +428,11 @@ public function testDecodeRootAttributes()
         $source = '<?xml version="1.0"?>'."\n".
             '<person gender="M"><firstname>Peter</firstname><lastname>Mac Calloway</lastname></person>'."\n";
 
-        $expected = array(
+        $expected = [
             'firstname' => 'Peter',
             'lastname' => 'Mac Calloway',
             '@gender' => 'M',
-        );
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -447,12 +447,12 @@ public function testDecodeArray()
             '</people>'.
             '</response>'."\n";
 
-        $expected = array(
-            'people' => array('person' => array(
-                array('firstname' => 'Benjamin', 'lastname' => 'Alexandre'),
-                array('firstname' => 'Damien', 'lastname' => 'Clay'),
-            )),
-        );
+        $expected = [
+            'people' => ['person' => [
+                ['firstname' => 'Benjamin', 'lastname' => 'Alexandre'],
+                ['firstname' => 'Damien', 'lastname' => 'Clay'],
+            ]],
+        ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -510,10 +510,10 @@ public function testDecodeIgnoreWhiteSpace()
     </person>
 </people>
 XML;
-        $expected = array('person' => array(
-            array('firstname' => 'Benjamin', 'lastname' => 'Alexandre'),
-            array('firstname' => 'Damien', 'lastname' => 'Clay'),
-        ));
+        $expected = ['person' => [
+            ['firstname' => 'Benjamin', 'lastname' => 'Alexandre'],
+            ['firstname' => 'Damien', 'lastname' => 'Clay'],
+        ]];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -537,10 +537,10 @@ public function testDecodeIgnoreComments()
 </people>
 XML;
 
-        $expected = array('person' => array(
-          array('firstname' => 'Benjamin', 'lastname' => 'Alexandre'),
-          array('firstname' => 'Damien', 'lastname' => 'Clay'),
-        ));
+        $expected = ['person' => [
+          ['firstname' => 'Benjamin', 'lastname' => 'Alexandre'],
+          ['firstname' => 'Damien', 'lastname' => 'Clay'],
+        ]];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -573,20 +573,20 @@ private function doTestDecodePreserveComments(bool $legacy = false)
 XML;
 
         if ($legacy) {
-            $this->encoder = new XmlEncoder('people', null, array(XML_PI_NODE));
+            $this->encoder = new XmlEncoder('people', null, [XML_PI_NODE]);
         } else {
-            $this->encoder = new XmlEncoder(array(
+            $this->encoder = new XmlEncoder([
                 XmlEncoder::ROOT_NODE_NAME => 'people',
-                XmlEncoder::DECODER_IGNORED_NODE_TYPES => array(XML_PI_NODE),
-            ));
+                XmlEncoder::DECODER_IGNORED_NODE_TYPES => [XML_PI_NODE],
+            ]);
         }
-        $serializer = new Serializer(array(new CustomNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([new CustomNormalizer()], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
 
-        $expected = array('person' => array(
-          array('firstname' => 'Benjamin', 'lastname' => 'Alexandre', '#comment' => ' This comment should be decoded. '),
-          array('firstname' => 'Damien', 'lastname' => 'Clay'),
-        ));
+        $expected = ['person' => [
+          ['firstname' => 'Benjamin', 'lastname' => 'Alexandre', '#comment' => ' This comment should be decoded. '],
+          ['firstname' => 'Damien', 'lastname' => 'Clay'],
+        ]];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
     }
@@ -606,9 +606,9 @@ private function doTestDecodeAlwaysAsCollection(bool $legacy = false)
         if ($legacy) {
             $this->encoder = new XmlEncoder('response', null);
         } else {
-            $this->encoder = new XmlEncoder(array(XmlEncoder::ROOT_NODE_NAME => 'response'));
+            $this->encoder = new XmlEncoder([XmlEncoder::ROOT_NODE_NAME => 'response']);
         }
-        $serializer = new Serializer(array(new CustomNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([new CustomNormalizer()], ['xml' => new XmlEncoder()]);
         $this->encoder->setSerializer($serializer);
 
         $source = <<<'XML'
@@ -620,47 +620,47 @@ private function doTestDecodeAlwaysAsCollection(bool $legacy = false)
     </order_row>
 </order_rows>
 XML;
-        $expected = array(
+        $expected = [
             '@nodeType' => 'order_row',
             '@virtualEntity' => 'true',
-            'order_row' => array(array(
-                'id' => array(16),
-                'test' => array(16),
-            )),
-        );
+            'order_row' => [[
+                'id' => [16],
+                'test' => [16],
+            ]],
+        ];
 
-        $this->assertEquals($expected, $this->encoder->decode($source, 'xml', array('as_collection' => true)));
+        $this->assertEquals($expected, $this->encoder->decode($source, 'xml', ['as_collection' => true]));
     }
 
     public function testDecodeWithoutItemHash()
     {
         $obj = new ScalarDummy();
-        $obj->xmlFoo = array(
-            'foo-bar' => array(
+        $obj->xmlFoo = [
+            'foo-bar' => [
                 '@key' => 'value',
-                'item' => array('@key' => 'key', 'key-val' => 'val'),
-            ),
-            'Foo' => array(
+                'item' => ['@key' => 'key', 'key-val' => 'val'],
+            ],
+            'Foo' => [
                 'Bar' => 'Test',
                 '@Type' => 'test',
-            ),
+            ],
             'föo_bär' => 'a',
-            'Bar' => array(1, 2, 3),
+            'Bar' => [1, 2, 3],
             'a' => 'b',
-        );
-        $expected = array(
-            'foo-bar' => array(
+        ];
+        $expected = [
+            'foo-bar' => [
                 '@key' => 'value',
-                'key' => array('@key' => 'key', 'key-val' => 'val'),
-            ),
-            'Foo' => array(
+                'key' => ['@key' => 'key', 'key-val' => 'val'],
+            ],
+            'Foo' => [
                 'Bar' => 'Test',
                 '@Type' => 'test',
-            ),
+            ],
             'föo_bär' => 'a',
-       
10000
     'Bar' => array(1, 2, 3),
+            'Bar' => [1, 2, 3],
             'a' => 'b',
-        );
+        ];
         $xml = $this->encoder->encode($obj, 'xml');
         $this->assertEquals($expected, $this->encoder->decode($xml, 'xml'));
     }
@@ -720,7 +720,7 @@ protected function getNamespacedXmlSource()
 
     protected function getNamespacedArray()
     {
-        return array(
+        return [
             '@xmlns' => 'http://www.w3.org/2005/Atom',
             '@xmlns:app' => 'http://www.w3.org/2007/app',
             '@xmlns:media' => 'http://search.yahoo.com/mrss/',
@@ -728,36 +728,36 @@ protected function getNamespacedArray()
             '@xmlns:yt' => 'http://gdata.youtube.com/schemas/2007',
             'qux' => '1',
             'app:foo' => 'foo',
-            'yt:bar' => array('a', 'b'),
-            'media:baz' => array(
+            'yt:bar' => ['a', 'b'],
+            'media:baz' => [
                 'media:key' => 'val',
                 'media:key2' => 'val',
                 'A B' => 'bar',
-                'item' => array(
-                    array(
+                'item' => [
+                    [
                         'title' => 'title1',
-                    ),
-                    array(
+                    ],
+                    [
                         'title' => 'title2',
-                    ),
-                ),
-                'Barry' => array(
+                    ],
+                ],
+                'Barry' => [
                     '@size' => 'large',
-                    'FooBar' => array(
+                    'FooBar' => [
                         'Baz' => 'Ed',
                         '@gd:id' => 1,
-                    ),
-                ),
-            ),
-        );
+                    ],
+                ],
+            ],
+        ];
     }
 
     protected function getObject()
     {
         $obj = new Dummy();
         $obj->foo = 'foo';
-        $obj->bar = array('a', 'b');
-        $obj->baz = array('key' => 'val', 'key2' => 'val', 'A B' => 'bar', 'item' => array(array('title' => 'title1'), array('title' => 'title2')), 'Barry' => array('FooBar' => array('Baz' => 'Ed', '@id' => 1)));
+        $obj->bar = ['a', 'b'];
+        $obj->baz = ['key' => 'val', 'key2' => 'val', 'A B' => 'bar', 'item' => [['title' => 'title1'], ['title' => 'title2']], 'Barry' => ['FooBar' => ['Baz' => 'Ed', '@id' => 1]]];
         $obj->qux = '1';
 
         return $obj;
@@ -771,7 +771,7 @@ public function testEncodeXmlWithBoolValue()
 
 XML;
 
-        $actualXml = $this->encoder->encode(array('foo' => true, 'bar' => false), 'xml');
+        $actualXml = $this->encoder->encode(['foo' => true, 'bar' => false], 'xml');
 
         $this->assertEquals($expectedXml, $actualXml);
     }
@@ -780,7 +780,7 @@ public function testEncodeXmlWithDateTimeObjectValue()
     {
         $xmlEncoder = $this->createXmlEncoderWithDateTimeNormalizer();
 
-        $actualXml = $xmlEncoder->encode(array('dateTime' => new \DateTime($this->exampleDateTimeString)), 'xml');
+        $actualXml = $xmlEncoder->encode(['dateTime' => new \DateTime($this->exampleDateTimeString)], 'xml');
 
         $this->assertEquals($this->createXmlWithDateTime(), $actualXml);
     }
@@ -789,7 +789,7 @@ public function testEncodeXmlWithDateTimeObjectField()
     {
         $xmlEncoder = $this->createXmlEncoderWithDateTimeNormalizer();
 
-        $actualXml = $xmlEncoder->encode(array('foo' => array('@dateTime' => new \DateTime($this->exampleDateTimeString))), 'xml');
+        $actualXml = $xmlEncoder->encode(['foo' => ['@dateTime' => new \DateTime($this->exampleDateTimeString)]], 'xml');
 
         $this->assertEquals($this->createXmlWithDateTimeField(), $actualXml);
     }
@@ -802,7 +802,7 @@ public function testEncodeComment()
 
 XML;
 
-        $data = array('#comment' => ' foo ');
+        $data = ['#comment' => ' foo '];
 
         $this->assertEquals($expected, $this->encoder->encode($data, 'xml'));
     }
@@ -820,17 +820,17 @@ public function testLegacyEncodeWithoutPi()
     private function doTestEncodeWithoutPi(bool $legacy = false)
     {
         if ($legacy) {
-            $encoder = new XmlEncoder('response', null, array(), array(XML_PI_NODE));
+            $encoder = new XmlEncoder('response', null, [], [XML_PI_NODE]);
         } else {
-            $encoder = new XmlEncoder(array(
+            $encoder = new XmlEncoder([
                 XmlEncoder::ROOT_NODE_NAME => 'response',
-                XmlEncoder::ENCODER_IGNORED_NODE_TYPES => array(XML_PI_NODE),
-            ));
+                XmlEncoder::ENCODER_IGNORED_NODE_TYPES => [XML_PI_NODE],
+            ]);
         }
 
         $expected = '<response/>';
 
-        $this->assertEquals($expected, $encoder->encode(array(), 'xml'));
+        $this->assertEquals($expected, $encoder->encode([], 'xml'));
     }
 
     public function testEncodeWithoutComment()
@@ -846,12 +846,12 @@ public function testLegacyEncodeWithoutComment()
     private function doTestEncodeWithoutComment(bool $legacy = false)
     {
         if ($legacy) {
-            $encoder = new XmlEncoder('response', null, array(), array(XML_COMMENT_NODE));
+            $encoder = new XmlEncoder('response', null, [], [XML_COMMENT_NODE]);
         } else {
-            $encoder = new XmlEncoder(array(
+            $encoder = new XmlEncoder([
                 XmlEncoder::ROOT_NODE_NAME => 'response',
-                XmlEncoder::ENCODER_IGNORED_NODE_TYPES => array(XML_COMMENT_NODE),
-            ));
+                XmlEncoder::ENCODER_IGNORED_NODE_TYPES => [XML_COMMENT_NODE],
+            ]);
         }
 
         $expected = <<<'XML'
@@ -860,7 +860,7 @@ private function doTestEncodeWithoutComment(bool $legacy = false)
 
 XML;
 
-        $data = array('#comment' => ' foo ');
+        $data = ['#comment' => ' foo '];
 
         $this->assertEquals($expected, $encoder->encode($data, 'xml'));
     }
@@ -871,7 +871,7 @@ private function doTestEncodeWithoutComment(bool $legacy = false)
     private function createXmlEncoderWithDateTimeNormalizer()
     {
         $encoder = new XmlEncoder();
-        $serializer = new Serializer(array($this->createMockDateTimeNormalizer()), array('xml' => new XmlEncoder()));
+        $serializer = new Serializer([$this->createMockDateTimeNormalizer()], ['xml' => new XmlEncoder()]);
         $encoder->setSerializer($serializer);
 
         return $encoder;
@@ -887,7 +887,7 @@ private function createMockDateTimeNormalizer()
         $mock
             ->expects($this->once())
             ->method('normalize')
-            ->with(new \DateTime($this->exampleDateTimeString), 'xml', array())
+            ->with(new \DateTime($this->exampleDateTimeString), 'xml', [])
             ->willReturn($this->exampleDateTimeString);
 
         $mock
diff --git a/src/Symfony/Component/Serializer/Tests/NameConverter/MetadataAwareNameConverterTest.php b/src/Symfony/Component/Serializer/Tests/NameConverter/MetadataAwareNameConverterTest.php
index 40fbc396f6ec..f4c5c5b3059b 100644
--- a/src/Symfony/Component/Serializer/Tests/NameConverter/MetadataAwareNameConverterTest.php
+++ b/src/Symfony/Component/Serializer/Tests/NameConverter/MetadataAwareNameConverterTest.php
@@ -98,19 +98,19 @@ public function testDenormalizeWithFallback($expected, $propertyName)
 
     public function attributeProvider()
     {
-        return array(
-            array('foo', 'baz'),
-            array('bar', 'qux'),
-            array('quux', 'quux'),
-        );
+        return [
+            ['foo', 'baz'],
+            ['bar', 'qux'],
+            ['quux', 'quux'],
+        ];
     }
 
     public function fallbackAttributeProvider()
     {
-        return array(
-            array('foo', 'baz'),
-            array('bar', 'qux'),
-            array('quux', 'QUUX'),
-        );
+        return [
+            ['foo', 'baz'],
+            ['bar', 'qux'],
+            ['quux', 'QUUX'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractNormalizerTest.php
index 46f5bb46f288..fbf33aa7c639 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractNormalizerTest.php
@@ -33,8 +33,8 @@ class AbstractNormalizerTest extends TestCase
 
     protected function setUp()
     {
-        $loader = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\Loader\LoaderChain')->setConstructorArgs(array(array()))->getMock();
-        $this->classMetadata = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactory')->setConstructorArgs(array($loader))->getMock();
+        $loader = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\Loader\LoaderChain')->setConstructorArgs([[]])->getMock();
+        $this->classMetadata = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactory')->setConstructorArgs([$loader])->getMock();
         $this->normalizer = new AbstractNormalizerDummy($this->classMetadata);
     }
 
@@ -60,11 +60,11 @@ public function testGetAllowedAttributesAsString()
 
         $this->classMetadata->method('getMetadataFor')->willReturn($classMetadata);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => array('test')), true);
-        $this->assertEquals(array('a2', 'a4'), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => ['test']], true);
+        $this->assertEquals(['a2', 'a4'], $result);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => array('other')), true);
-        $this->assertEquals(array('a3', 'a4'), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => ['other']], true);
+        $this->assertEquals(['a3', 'a4'], $result);
     }
 
     public function testGetAllowedAttributesAsObjects()
@@ -89,24 +89,24 @@ public function testGetAllowedAttributesAsObjects()
 
         $this->classMetadata->method('getMetadataFor')->willReturn($classMetadata);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => array('test')), false);
-        $this->assertEquals(array($a2, $a4), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => ['test']], false);
+        $this->assertEquals([$a2, $a4], $result);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => 'test'), false);
-        $this->assertEquals(array($a2, $a4), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => 'test'], false);
+        $this->assertEquals([$a2, $a4], $result);
 
-        $result = $this->normalizer->getAllowedAttributes('c', array(AbstractNormalizer::GROUPS => array('other')), false);
-        $this->assertEquals(array($a3, $a4), $result);
+        $result = $this->normalizer->getAllowedAttributes('c', [AbstractNormalizer::GROUPS => ['other']], false);
+        $this->assertEquals([$a3, $a4], $result);
     }
 
     public function testObjectToPopulateWithProxy()
     {
         $proxyDummy = new ProxyDummy();
 
-        $context = array(AbstractNormalizer::OBJECT_TO_POPULATE => $proxyDummy);
+        $context = [AbstractNormalizer::OBJECT_TO_POPULATE => $proxyDummy];
 
         $normalizer = new ObjectNormalizer();
-        $normalizer->denormalize(array('foo' => 'bar'), 'Symfony\Component\Serializer\Tests\Fixtures\ToBeProxyfiedDummy', null, $context);
+        $normalizer->denormalize(['foo' => 'bar'], 'Symfony\Component\Serializer\Tests\Fixtures\ToBeProxyfiedDummy', null, $context);
 
         $this->assertSame('bar', $proxyDummy->getFoo());
     }
@@ -114,7 +114,7 @@ public function testObjectToPopulateWithProxy()
     public function testObjectWithStaticConstructor()
     {
         $normalizer = new StaticConstructorNormalizer();
-        $dummy = $normalizer->denormalize(array('foo' => 'baz'), StaticConstructorDummy::class);
+        $dummy = $normalizer->denormalize(['foo' => 'baz'], StaticConstructorDummy::class);
 
         $this->assertInstanceOf(StaticConstructorDummy::class, $dummy);
         $this->assertEquals('baz', $dummy->quz);
@@ -127,7 +127,7 @@ public function testObjectWithStaticConstructor()
     public function testObjectWithNullableConstructorArgument()
     {
         $normalizer = new ObjectNormalizer();
-        $dummy = $normalizer->denormalize(array('foo' => null), NullableConstructorArgumentDummy::class);
+        $dummy = $normalizer->denormalize(['foo' => null], NullableConstructorArgumentDummy::class);
 
         $this->assertNull($dummy->getFoo());
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
index 0b69dad90e49..a45009d2330d 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/AbstractObjectNormalizerTest.php
@@ -168,8 +168,8 @@ public function testSkipNullValues()
         $dummy->bar = 'present';
 
         $normalizer = new ObjectNormalizer();
-        $result = $normalizer->normalize($dummy, null, array(AbstractObjectNormalizer::SKIP_NULL_VALUES => true));
-        $this->assertSame(array('bar' => 'present'), $result);
+        $result = $normalizer->normalize($dummy, null, [AbstractObjectNormalizer::SKIP_NULL_VALUES => true]);
+        $this->assertSame(['bar' => 'present'], $result);
     }
 }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/DateIntervalNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/DateIntervalNormalizerTest.php
index 707921650fd6..b8ac21b5a608 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/DateIntervalNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/DateIntervalNormalizerTest.php
@@ -71,7 +71,7 @@ public function testLegacyNormalizeUsingFormatPassedInConstructor($format, $outp
 
     private function doTestNormalizeUsingFormatPassedInConstructor($format, $output, $input, bool $legacy = false)
     {
-        $normalizer = $legacy ? new DateIntervalNormalizer($format) : new DateIntervalNormalizer(array(DateIntervalNormalizer::FORMAT_KEY => $format));
+        $normalizer = $legacy ? new DateIntervalNormalizer($format) : new DateIntervalNormalizer([DateIntervalNormalizer::FORMAT_KEY => $format]);
         $this->assertEquals($output, $normalizer->normalize(new \DateInterval($input)));
     }
 
@@ -121,7 +121,7 @@ public function testLegacyDenormalizeUsingFormatPassedInConstructor($format, $in
 
     private function doTestDenormalizeUsingFormatPassedInConstructor($format, $input, $output, bool $legacy = false)
     {
-        $normalizer = $legacy ? new DateIntervalNormalizer($format) : new DateIntervalNormalizer(array(DateIntervalNormalizer::FORMAT_KEY => $format));
+        $normalizer = $legacy ? new DateIntervalNormalizer($format) : new DateIntervalNormalizer([DateIntervalNormalizer::FORMAT_KEY => $format]);
         $this->assertDateIntervalEquals(new \DateInterval($output), $normalizer->denormalize($input, \DateInterval::class));
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/DateTimeNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/DateTimeNormalizerTest.php
index 695837f0541b..7d087d7d5eda 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/DateTimeNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/DateTimeNormalizerTest.php
@@ -59,7 +59,7 @@ public function testLegacyNormalizeUsingFormatPassedInConstructor()
 
     private function doTestNormalizeUsingFormatPassedInConstructor(bool $legacy = false)
     {
-        $normalizer = $legacy ? new DateTimeNormalizer('y') : new DateTimeNormalizer(array(DateTimeNormalizer::FORMAT_KEY => 'y'));
+        $normalizer = $legacy ? new DateTimeNormalizer('y') : new DateTimeNormalizer([DateTimeNormalizer::FORMAT_KEY => 'y']);
         $this->assertEquals('16', $normalizer->normalize(new \DateTime('2016/01/01', new \DateTimeZone('UTC'))));
     }
 
@@ -78,7 +78,7 @@ private function doTestNormalizeUsingTimeZonePassedInConstructor(bool $legacy =
         if ($legacy) {
             $normalizer = new DateTimeNormalizer(\DateTime::RFC3339, new \DateTimeZone('Japan'));
         } else {
-            $normalizer = new DateTimeNormalizer(array(DateTimeNormalizer::TIMEZONE_KEY => new \DateTimeZone('Japan')));
+            $normalizer = new DateTimeNormalizer([DateTimeNormalizer::TIMEZONE_KEY => new \DateTimeZone('Japan')]);
         }
 
         $this->assertSame('2016-12-01T00:00:00+09:00', $normalizer->normalize(new \DateTime('2016/12/01', new \DateTimeZone('Japan'))));
@@ -217,7 +217,7 @@ private function doTestDenormalizeUsingTimezonePassedInConstructor(bool $legacy
     {
         $timezone = new \DateTimeZone('Japan');
         $expected = new \DateTime('2016/12/01 17:35:00', $timezone);
-        $normalizer = $legacy ? new DateTimeNormalizer(null, $timezone) : new DateTimeNormalizer(array(DateTimeNormalizer::TIMEZONE_KEY => $timezone));
+        $normalizer = $legacy ? new DateTimeNormalizer(null, $timezone) : new DateTimeNormalizer([DateTimeNormalizer::TIMEZONE_KEY => $timezone]);
 
         $this->assertEquals($expected, $normalizer->denormalize('2016.12.01 17:35:00', \DateTime::class, null, [
             DateTimeNormalizer::FORMAT_KEY => 'Y.m.d H:i:s',
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
index 07277579b3b5..37948bef4719 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
@@ -41,7 +41,7 @@ protected function setUp()
         $this->createNormalizer();
     }
 
-    private function createNormalizer(array $defaultContext = array())
+    private function createNormalizer(array $defaultContext = [])
     {
         $this->serializer = $this->getMockBuilder(__NAMESPACE__.'\SerializerNormalizer')->getMock();
         $this->normalizer = new GetSetMethodNormalizer(null, null, null, null, null, $defaultContext);
@@ -72,14 +72,14 @@ public function testNormalize()
         ;
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'bar' => 'bar',
                 'baz' => true,
                 'fooBar' => 'foobar',
                 'camelCase' => 'camelcase',
                 'object' => 'string_object',
-            ),
+            ],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -87,7 +87,7 @@ public function testNormalize()
     public function testDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\GetSetDummy',
             'any'
         );
@@ -115,7 +115,7 @@ public function testDenormalizeNull()
     public function testConstructorDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\GetConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertEquals('bar', $obj->getBar());
@@ -125,7 +125,7 @@ public function testConstructorDenormalize()
     public function testConstructorDenormalizeWithNullArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => null, 'baz' => true),
+            ['foo' => 'foo', 'bar' => null, 'baz' => true],
             __NAMESPACE__.'\GetConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertNull($obj->getBar());
@@ -135,36 +135,36 @@ public function testConstructorDenormalizeWithNullArgument()
     public function testConstructorDenormalizeWithMissingOptionalArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'test', 'baz' => array(1, 2, 3)),
+            ['foo' => 'test', 'baz' => [1, 2, 3]],
             __NAMESPACE__.'\GetConstructorOptionalArgsDummy', 'any');
         $this->assertEquals('test', $obj->getFoo());
-        $this->assertEquals(array(), $obj->getBar());
-        $this->assertEquals(array(1, 2, 3), $obj->getBaz());
+        $this->assertEquals([], $obj->getBar());
+        $this->assertEquals([1, 2, 3], $obj->getBaz());
     }
 
     public function testConstructorDenormalizeWithOptionalDefaultArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('bar' => 'test'),
+            ['bar' => 'test'],
             __NAMESPACE__.'\GetConstructorArgsWithDefaultValueDummy', 'any');
-        $this->assertEquals(array(), $obj->getFoo());
+        $this->assertEquals([], $obj->getFoo());
         $this->assertEquals('test', $obj->getBar());
     }
 
     public function testConstructorDenormalizeWithVariadicArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => array(1, 2, 3)),
+            ['foo' => [1, 2, 3]],
             'Symfony\Component\Serializer\Tests\Fixtures\VariadicConstructorArgsDummy', 'any');
-        $this->assertEquals(array(1, 2, 3), $obj->getFoo());
+        $this->assertEquals([1, 2, 3], $obj->getFoo());
     }
 
     public function testConstructorDenormalizeWithMissingVariadicArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array(),
+            [],
             'Symfony\Component\Serializer\Tests\Fixtures\VariadicConstructorArgsDummy', 'any');
-        $this->assertEquals(array(), $obj->getFoo());
+        $this->assertEquals([], $obj->getFoo());
     }
 
     public function testConstructorWithObjectDenormalize()
@@ -181,7 +181,7 @@ public function testConstructorWithObjectDenormalize()
 
     public function testConstructorWArgWithPrivateMutator()
     {
-        $obj = $this->normalizer->denormalize(array('foo' => 'bar'), __NAMESPACE__.'\ObjectConstructorArgsWithPrivateMutatorDummy', 'any');
+        $obj = $this->normalizer->denormalize(['foo' => 'bar'], __NAMESPACE__.'\ObjectConstructorArgsWithPrivateMutatorDummy', 'any');
         $this->assertEquals('bar', $obj->getFoo());
     }
 
@@ -199,18 +199,18 @@ public function testGroupsNormalize()
         $obj->setKevin('kevin');
         $obj->setCoopTilleuls('coopTilleuls');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'bar' => 'bar',
-        ), $this->normalizer->normalize($obj, null, array(GetSetMethodNormalizer::GROUPS => array('c'))));
+        ], $this->normalizer->normalize($obj, null, [GetSetMethodNormalizer::GROUPS => ['c']]));
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'symfony' => 'symfony',
             'foo' => 'foo',
             'fooBar' => 'fooBar',
             'bar' => 'bar',
             'kevin' => 'kevin',
             'coopTilleuls' => 'coopTilleuls',
-        ), $this->normalizer->normalize($obj, null, array(GetSetMethodNormalizer::GROUPS => array('a', 'c'))));
+        ], $this->normalizer->normalize($obj, null, [GetSetMethodNormalizer::GROUPS => ['a', 'c']]));
     }
 
     public function testGroupsDenormalize()
@@ -222,13 +222,13 @@ public function testGroupsDenormalize()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $toNormalize = array('foo' => 'foo', 'bar' => 'bar');
+        $toNormalize = ['foo' => 'foo', 'bar' => 'bar'];
 
         $normalized = $this->normalizer->denormalize(
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(GetSetMethodNormalizer::GROUPS => array('a'))
+            [GetSetMethodNormalizer::GROUPS => ['a']]
         );
         $this->assertEquals($obj, $normalized);
 
@@ -238,7 +238,7 @@ public function testGroupsDenormalize()
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(GetSetMethodNormalizer::GROUPS => array('a', 'b'))
+            [GetSetMethodNormalizer::GROUPS => ['a', 'b']]
         );
         $this->assertEquals($obj, $normalized);
     }
@@ -255,12 +255,12 @@ public function testGroupsNormalizeWithNameConverter()
         $obj->setCoopTilleuls('les-tilleuls.coop');
 
         $this->assertEquals(
-            array(
+            [
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
-            ),
-            $this->normalizer->normalize($obj, null, array(GetSetMethodNormalizer::GROUPS => array('name_converter')))
+            ],
+            $this->normalizer->normalize($obj, null, [GetSetMethodNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -276,12 +276,12 @@ public function testGroupsDenormalizeWithNameConverter()
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array(
+            $this->normalizer->denormalize([
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
                 'coop_tilleuls' => 'les-tilleuls.coop',
-            ), 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, array(GetSetMethodNormalizer::GROUPS => array('name_converter')))
+            ], 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, [GetSetMethodNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -303,7 +303,7 @@ public function testLegacyCallbacks($callbacks, $value, $result, $message)
 
     private function doTestCallbacks($callbacks, $value, $result, $message, bool $legacy = false)
     {
-        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer(array(GetSetMethodNormalizer::CALLBACKS => $callbacks));
+        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer([GetSetMethodNormalizer::CALLBACKS => $callbacks]);
 
         $obj = new GetConstructorDummy('', $value, true);
         $this->assertEquals(
@@ -331,8 +331,8 @@ public function testLegacyUncallableCallbacks()
 
     private function doTestUncallableCallbacks(bool $legacy = false)
     {
-        $callbacks = array('bar' => null);
-        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer(array(GetSetMethodNormalizer::CALLBACKS => $callbacks));
+        $callbacks = ['bar' => null];
+        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer([GetSetMethodNormalizer::CALLBACKS => $callbacks]);
 
         $obj = new GetConstructorDummy('baz', 'quux', true);
 
@@ -351,8 +351,8 @@ public function testLegacyIgnoredAttributes()
 
     private function doTestIgnoredAttributes(bool $legacy = false)
     {
-        $ignoredAttributes = array('foo', 'bar', 'baz', 'camelCase', 'object');
-        $legacy ? $this->normalizer->setIgnoredAttributes($ignoredAttributes) : $this->createNormalizer(array(GetSetMethodNormalizer::IGNORED_ATTRIBUTES => $ignoredAttributes));
+        $ignoredAttributes = ['foo', 'bar', 'baz', 'camelCase', 'object'];
+        $legacy ? $this->normalizer->setIgnoredAttributes($ignoredAttributes) : $this->createNormalizer([GetSetMethodNormalizer::IGNORED_ATTRIBUTES => $ignoredAttributes]);
 
         $obj = new GetSetDummy();
         $obj->setFoo('foo');
@@ -360,45 +360,45 @@ private function doTestIgnoredAttributes(bool $legacy = false)
         $obj->setBaz(true);
 
         $this->assertEquals(
-            array('fooBar' => 'foobar'),
+            ['fooBar' => 'foobar'],
             $this->normalizer->normalize($obj, 'any')
         );
     }
 
     public function provideCallbacks()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'bar' => function ($bar) {
                         return 'baz';
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => 'baz', 'baz' => true),
+                ['foo' => '', 'bar' => 'baz', 'baz' => true],
                 'Change a string',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => null, 'baz' => true),
+                ['foo' => '', 'bar' => null, 'baz' => true],
                 'Null an item',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return $bar->format('d-m-Y H:i:s');
                     },
-                ),
+                ],
                 new \DateTime('2011-09-10 06:30:00'),
-                array('foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true),
+                ['foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true],
                 'Format a date',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         $foos = '';
                         foreach ($bars as $bar) {
@@ -407,22 +407,22 @@ public function provideCallbacks()
 
                         return $foos;
                     },
-                ),
-                array(new GetConstructorDummy('baz', '', false), new GetConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 'bazquux', 'baz' => true),
+                ],
+                [new GetConstructorDummy('baz', '', false), new GetConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 'bazquux', 'baz' => true],
                 'Collect a property',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         return \count($bars);
                     },
-                ),
-                array(new GetConstructorDummy('baz', '', false), new GetConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 2, 'baz' => true),
+                ],
+                [new GetConstructorDummy('baz', '', false), new GetConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 2, 'baz' => true],
                 'Count a property',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -459,8 +459,8 @@ public function testLegacyUnableToNormalizeCircularReference()
 
     private function doTestUnableToNormalizeCircularReference(bool $legacy = false)
     {
-        $legacy ? $this->normalizer->setCircularReferenceLimit(2) : $this->createNormalizer(array(GetSetMethodNormalizer::CIRCULAR_REFERENCE_LIMIT => 2));
-        $this->serializer = new Serializer(array($this->normalizer));
+        $legacy ? $this->normalizer->setCircularReferenceLimit(2) : $this->createNormalizer([GetSetMethodNormalizer::CIRCULAR_REFERENCE_LIMIT => 2]);
+        $this->serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($this->serializer);
 
         $obj = new CircularReferenceDummy();
@@ -469,16 +469,16 @@ private function doTestUnableToNormalizeCircularReference(bool $legacy = false)
 
     public function testSiblingReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $siblingHolder = new SiblingHolder();
 
-        $expected = array(
-            'sibling0' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling1' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling2' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-        );
+        $expected = [
+            'sibling0' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling1' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling2' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+        ];
         $this->assertEquals($expected, $this->normalizer->normalize($siblingHolder));
     }
 
@@ -498,13 +498,13 @@ private function doTestCircularReferenceHandler(bool $legacy = false)
             return \get_class($obj);
         };
 
-        $legacy ? $this->normalizer->setCircularReferenceHandler($handler) : $this->createNormalizer(array(GetSetMethodNormalizer::CIRCULAR_REFERENCE_HANDLER => $handler));
-        $this->serializer = new Serializer(array($this->normalizer));
+        $legacy ? $this->normalizer->setCircularReferenceHandler($handler) : $this->createNormalizer([GetSetMethodNormalizer::CIRCULAR_REFERENCE_HANDLER => $handler]);
+        $this->serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($this->serializer);
 
         $obj = new CircularReferenceDummy();
 
-        $expected = array('me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy');
+        $expected = ['me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy'];
         $this->assertEquals($expected, $this->normalizer->normalize($obj));
     }
 
@@ -514,10 +514,10 @@ public function testObjectToPopulate()
         $dummy->setFoo('foo');
 
         $obj = $this->normalizer->denormalize(
-            array('bar' => 'bar'),
+            ['bar' => 'bar'],
             __NAMESPACE__.'\GetSetDummy',
             null,
-            array(GetSetMethodNormalizer::OBJECT_TO_POPULATE => $dummy)
+            [GetSetMethodNormalizer::OBJECT_TO_POPULATE => $dummy]
         );
 
         $this->assertEquals($dummy, $obj);
@@ -529,13 +529,13 @@ public function testDenormalizeNonExistingAttribute()
     {
         $this->assertEquals(
             new GetSetDummy(),
-            $this->normalizer->denormalize(array('non_existing' => true), __NAMESPACE__.'\GetSetDummy')
+            $this->normalizer->denormalize(['non_existing' => true], __NAMESPACE__.'\GetSetDummy')
         );
     }
 
     public function testDenormalizeShouldNotSetStaticAttribute()
     {
-        $obj = $this->normalizer->denormalize(array('staticObject' => true), __NAMESPACE__.'\GetSetDummy');
+        $obj = $this->normalizer->denormalize(['staticObject' => true], __NAMESPACE__.'\GetSetDummy');
 
         $this->assertEquals(new GetSetDummy(), $obj);
         $this->assertNull(GetSetDummy::getStaticObject());
@@ -553,13 +553,13 @@ public function testNoStaticGetSetSupport()
 
     public function testPrivateSetter()
     {
-        $obj = $this->normalizer->denormalize(array('foo' => 'foobar'), __NAMESPACE__.'\ObjectWithPrivateSetterDummy');
+        $obj = $this->normalizer->denormalize(['foo' => 'foobar'], __NAMESPACE__.'\ObjectWithPrivateSetterDummy');
         $this->assertEquals('bar', $obj->getFoo());
     }
 
     public function testHasGetterDenormalize()
     {
-        $obj = $this->normalizer->denormalize(array('foo' => true), ObjectWithHasGetterDummy::class);
+        $obj = $this->normalizer->denormalize(['foo' => true], ObjectWithHasGetterDummy::class);
         $this->assertTrue($obj->hasFoo());
     }
 
@@ -569,7 +569,7 @@ public function testHasGetterNormalize()
         $obj->setFoo(true);
 
         $this->assertEquals(
-            array('foo' => true),
+            ['foo' => true],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -578,7 +578,7 @@ public function testMaxDepth()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new GetSetMethodNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $level1 = new MaxDepthDummy();
@@ -596,20 +596,20 @@ public function testMaxDepth()
         $level4->bar = 'level4';
         $level3->child = $level4;
 
-        $result = $serializer->normalize($level1, null, array(GetSetMethodNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $serializer->normalize($level1, null, [GetSetMethodNormalizer::ENABLE_MAX_DEPTH => true]);
 
-        $expected = array(
+        $expected = [
             'bar' => 'level1',
-            'child' => array(
+            'child' => [
                     'bar' => 'level2',
-                    'child' => array(
+                    'child' => [
                             'bar' => 'level3',
-                            'child' => array(
+                            'child' => [
                                     'child' => null,
-                                ),
-                        ),
-                ),
-            );
+                                ],
+                        ],
+                ],
+            ];
 
         $this->assertEquals($expected, $result);
     }
@@ -744,7 +744,7 @@ class GetConstructorOptionalArgsDummy
     private $bar;
     private $baz;
 
-    public function __construct($foo, $bar = array(), $baz = array())
+    public function __construct($foo, $bar = [], $baz = [])
     {
         $this->foo = $foo;
         $this->bar = $bar;
@@ -777,7 +777,7 @@ class GetConstructorArgsWithDefaultValueDummy
     protected $foo;
     protected $bar;
 
-    public function __construct($foo = array(), $bar)
+    public function __construct($foo = [], $bar)
     {
         $this->foo = $foo;
         $this->bar = $bar;
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/JsonSerializableNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/JsonSerializableNormalizerTest.php
index 14d4cd743bf9..5f6731b7ca60 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/JsonSerializableNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/JsonSerializableNormalizerTest.php
@@ -37,7 +37,7 @@ protected function setUp()
         $this->createNormalizer();
     }
 
-    private function createNormalizer(array $defaultContext = array())
+    private function createNormalizer(array $defaultContext = [])
     {
         $this->serializer = $this->getMockBuilder(JsonSerializerNormalizer::class)->getMock();
         $this->normalizer = new JsonSerializableNormalizer(null, null, $defaultContext);
@@ -86,7 +86,7 @@ public function testLegacyCircularNormalize()
      */
     private function doTestCircularNormalize(bool $legacy = false)
     {
-        $legacy ? $this->normalizer->setCircularReferenceLimit(1) : $this->createNormalizer(array(JsonSerializableNormalizer::CIRCULAR_REFERENCE_LIMIT => 1));
+        $legacy ? $this->normalizer->setCircularReferenceLimit(1) : $this->createNormalizer([JsonSerializableNormalizer::CIRCULAR_REFERENCE_LIMIT => 1]);
 
         $this->serializer
             ->expects($this->once())
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
index b4619c262d40..b2bc76a86a90 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
@@ -53,7 +53,7 @@ protected function setUp()
         $this->createNormalizer();
     }
 
-    private function createNormalizer(array $defaultContext = array(), ClassMetadataFactoryInterface $classMetadataFactory = null)
+    private function createNormalizer(array $defaultContext = [], ClassMetadataFactoryInterface $classMetadataFactory = null)
     {
         $this->serializer = $this->getMockBuilder(__NAMESPACE__.'\ObjectSerializerNormalizer')->getMock();
         $this->normalizer = new ObjectNormalizer($classMetadataFactory, null, null, null, null, null, $defaultContext);
@@ -78,14 +78,14 @@ public function testNormalize()
         ;
 
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'bar' => 'bar',
                 'baz' => true,
                 'fooBar' => 'foobar',
                 'camelCase' => 'camelcase',
                 'object' => 'string_object',
-            ),
+            ],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -93,7 +93,7 @@ public function testNormalize()
     public function testDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\ObjectDummy',
             'any'
         );
@@ -121,7 +121,7 @@ public function testDenormalizeNull()
     public function testConstructorDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'),
+            ['foo' => 'foo', 'bar' => 'bar', 'baz' => true, 'fooBar' => 'foobar'],
             __NAMESPACE__.'\ObjectConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertEquals('bar', $obj->bar);
@@ -131,7 +131,7 @@ public function testConstructorDenormalize()
     public function testConstructorDenormalizeWithNullArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => null, 'baz' => true),
+            ['foo' => 'foo', 'bar' => null, 'baz' => true],
             __NAMESPACE__.'\ObjectConstructorDummy', 'any');
         $this->assertEquals('foo', $obj->getFoo());
         $this->assertNull($obj->bar);
@@ -141,19 +141,19 @@ public function testConstructorDenormalizeWithNullArgument()
     public function testConstructorDenormalizeWithMissingOptionalArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'test', 'baz' => array(1, 2, 3)),
+            ['foo' => 'test', 'baz' => [1, 2, 3]],
             __NAMESPACE__.'\ObjectConstructorOptionalArgsDummy', 'any');
         $this->assertEquals('test', $obj->getFoo());
-        $this->assertEquals(array(), $obj->bar);
-        $this->assertEquals(array(1, 2, 3), $obj->getBaz());
+        $this->assertEquals([], $obj->bar);
+        $this->assertEquals([1, 2, 3], $obj->getBaz());
     }
 
     public function testConstructorDenormalizeWithOptionalDefaultArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('bar' => 'test'),
+            ['bar' => 'test'],
             __NAMESPACE__.'\ObjectConstructorArgsWithDefaultValueDummy', 'any');
-        $this->assertEquals(array(), $obj->getFoo());
+        $this->assertEquals([], $obj->getFoo());
         $this->assertEquals('test', $obj->getBar());
     }
 
@@ -171,16 +171,16 @@ public function testConstructorWithObjectDenormalize()
 
     public function testConstructorWithObjectTypeHintDenormalize()
     {
-        $data = array(
+        $data = [
             'id' => 10,
-            'inner' => array(
+            'inner' => [
                 'foo' => 'oof',
                 'bar' => 'rab',
-            ),
-        );
+            ],
+        ];
 
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
         $normalizer->setSerializer($serializer);
 
         $obj = $normalizer->denormalize($data, DummyWithConstructorObject::class);
@@ -193,13 +193,13 @@ public function testConstructorWithObjectTypeHintDenormalize()
 
     public function testConstructorWithUnconstructableNullableObjectTypeHintDenormalize()
     {
-        $data = array(
+        $data = [
             'id' => 10,
             'inner' => null,
-        );
+        ];
 
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
         $normalizer->setSerializer($serializer);
 
         $obj = $normalizer->denormalize($data, DummyWithNullableConstructorObject::class);
@@ -214,16 +214,16 @@ public function testConstructorWithUnconstructableNullableObjectTypeHintDenormal
      */
     public function testConstructorWithUnknownObjectTypeHintDenormalize()
     {
-        $data = array(
+        $data = [
             'id' => 10,
-            'unknown' => array(
+            'unknown' => [
                 'foo' => 'oof',
                 'bar' => 'rab',
-            ),
-        );
+            ],
+        ];
 
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
         $normalizer->setSerializer($serializer);
 
         $normalizer->denormalize($data, DummyWithConstructorInexistingObject::class);
@@ -235,9 +235,9 @@ public function testConstructorWithUnknownObjectTypeHintDenormalize()
      */
     public function testConstructorWithMissingData()
     {
-        $data = array(
+        $data = [
             'foo' => 10,
-        );
+        ];
 
         $normalizer = new ObjectNormalizer();
 
@@ -246,17 +246,17 @@ public function testConstructorWithMissingData()
 
     public function testFillWithEmptyDataWhenMissingData()
     {
-        $data = array(
+        $data = [
             'foo' => 10,
-        );
+        ];
 
         $normalizer = new ObjectNormalizer();
 
-        $result = $normalizer->denormalize($data, DummyValueObject::class, 'json', array(
-            'default_constructor_arguments' => array(
-                DummyValueObject::class => array('foo' => '', 'bar' => '', 'baz' => null),
-            ),
-        ));
+        $result = $normalizer->denormalize($data, DummyValueObject::class, 'json', [
+            'default_constructor_arguments' => [
+                DummyValueObject::class => ['foo' => '', 'bar' => '', 'baz' => null],
+            ],
+        ]);
 
         $this->assertEquals(new DummyValueObject(10, '', null), $result);
     }
@@ -275,18 +275,18 @@ public function testGroupsNormalize()
         $obj->setKevin('kevin');
         $obj->setCoopTilleuls('coopTilleuls');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'bar' => 'bar',
-        ), $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('c'))));
+        ], $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['c']]));
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'symfony' => 'symfony',
             'foo' => 'foo',
             'fooBar' => 'fooBar',
             'bar' => 'bar',
             'kevin' => 'kevin',
             'coopTilleuls' => 'coopTilleuls',
-        ), $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('a', 'c'))));
+        ], $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['a', 'c']]));
     }
 
     public function testGroupsDenormalize()
@@ -298,13 +298,13 @@ public function testGroupsDenormalize()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $toNormalize = array('foo' => 'foo', 'bar' => 'bar');
+        $toNormalize = ['foo' => 'foo', 'bar' => 'bar'];
 
         $normalized = $this->normalizer->denormalize(
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(ObjectNormalizer::GROUPS => array('a'))
+            [ObjectNormalizer::GROUPS => ['a']]
         );
         $this->assertEquals($obj, $normalized);
 
@@ -314,7 +314,7 @@ public function testGroupsDenormalize()
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(ObjectNormalizer::GROUPS => array('a', 'b'))
+            [ObjectNormalizer::GROUPS => ['a', 'b']]
         );
         $this->assertEquals($obj, $normalized);
     }
@@ -328,7 +328,7 @@ public function testNormalizeNoPropertyInGroup()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $this->assertEquals(array(), $this->normalizer->normalize($obj, null, array('groups' => array('notExist'))));
+        $this->assertEquals([], $this->normalizer->normalize($obj, null, ['groups' => ['notExist']]));
     }
 
     public function testGroupsNormalizeWithNameConverter()
@@ -343,12 +343,12 @@ public function testGroupsNormalizeWithNameConverter()
         $obj->setCoopTilleuls('les-tilleuls.coop');
 
         $this->assertEquals(
-            array(
+            [
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
-            ),
-            $this->normalizer->normalize($obj, null, array(ObjectNormalizer::GROUPS => array('name_converter')))
+            ],
+            $this->normalizer->normalize($obj, null, [ObjectNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -364,12 +364,12 @@ public function testGroupsDenormalizeWithNameConverter()
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array(
+            $this->normalizer->denormalize([
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
                 'coop_tilleuls' => 'les-tilleuls.coop',
-            ), 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, array(ObjectNormalizer::GROUPS => array('name_converter')))
+            ], 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, [ObjectNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -384,12 +384,12 @@ public function testMetadataAwareNameConvertorWithNotSerializedConstructorParame
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array('bar' => 'xyz'),
+            $this->normalizer->denormalize(['bar' => 'xyz'],
                 'Symfony\Component\Serializer\Tests\Fixtures\NotSerializedConstructorArgumentDummy',
                 null,
-                array(ObjectNormalizer::DEFAULT_CONSTRUCTOR_ARGUMENTS => array(
-                    'Symfony\Component\Serializer\Tests\Fixtures\NotSerializedConstructorArgumentDummy' => array('foo' => 'buz'),
-                ))
+                [ObjectNormalizer::DEFAULT_CONSTRUCTOR_ARGUMENTS => [
+                    'Symfony\Component\Serializer\Tests\Fixtures\NotSerializedConstructorArgumentDummy' => ['foo' => 'buz'],
+                ]]
             )
         );
     }
@@ -412,7 +412,7 @@ public function testLegacyCallbacks($callbacks, $value, $result, $message)
 
     private function doTestCallbacks($callbacks, $value, $result, $message, bool $legacy = false)
     {
-        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer(array(ObjectNormalizer::CALLBACKS => $callbacks));
+        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer([ObjectNormalizer::CALLBACKS => $callbacks]);
         $obj = new ObjectConstructorDummy('', $value, true);
 
         $this->assertEquals(
@@ -440,8 +440,8 @@ public function testLegacyUncallableCallbacks()
 
     private function doTestUncallableCallbacks(bool $legacy = false)
     {
-        $callbacks = array('bar' => null);
-        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer(array(ObjectNormalizer::CALLBACKS => $callbacks));
+        $callbacks = ['bar' => null];
+        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer([ObjectNormalizer::CALLBACKS => $callbacks]);
 
         $obj = new ObjectConstructorDummy('baz', 'quux', true);
 
@@ -460,8 +460,8 @@ public function testLegacyIgnoredAttributes()
 
     private function doTestIgnoredAttributes(bool $legacy = false)
     {
-        $ignoredAttributes = array('foo', 'bar', 'baz', 'camelCase', 'object');
-        $legacy ? $this->normalizer->setIgnoredAttributes($ignoredAttributes) : $this->createNormalizer(array(ObjectNormalizer::IGNORED_ATTRIBUTES => $ignoredAttributes));
+        $ignoredAttributes = ['foo', 'bar', 'baz', 'camelCase', 'object'];
+        $legacy ? $this->normalizer->setIgnoredAttributes($ignoredAttributes) : $this->createNormalizer([ObjectNormalizer::IGNORED_ATTRIBUTES => $ignoredAttributes]);
 
         $obj = new ObjectDummy();
         $obj->setFoo('foo');
@@ -469,7 +469,7 @@ private function doTestIgnoredAttributes(bool $legacy = false)
         $obj->setBaz(true);
 
         $this->assertEquals(
-            array('fooBar' => 'foobar'),
+            ['fooBar' => 'foobar'],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -486,35 +486,35 @@ public function testLegacyIgnoredAttributesDenormalize()
 
     private function doTestIgnoredAttributesDenormalize(bool $legacy = false)
     {
-        $ignoredAttributes = array('fooBar', 'bar', 'baz');
-        $legacy ? $this->normalizer->setIgnoredAttributes($ignoredAttributes) : $this->createNormalizer(array(ObjectNormalizer::IGNORED_ATTRIBUTES => $ignoredAttributes));
+        $ignoredAttributes = ['fooBar', 'bar', 'baz'];
+        $legacy ? $this->normalizer->setIgnoredAttributes($ignoredAttributes) : $this->createNormalizer([ObjectNormalizer::IGNORED_ATTRIBUTES => $ignoredAttributes]);
 
         $obj = new ObjectDummy();
         $obj->setFoo('foo');
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array('fooBar' => 'fooBar', 'foo' => 'foo', 'baz' => 'baz'), __NAMESPACE__.'\ObjectDummy')
+            $this->normalizer->denormalize(['fooBar' => 'fooBar', 'foo' => 'foo', 'baz' => 'baz'], __NAMESPACE__.'\ObjectDummy')
         );
     }
 
     public function provideCallbacks()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'bar' => function ($bar) {
                         $this->assertEquals('baz', $bar);
 
                         return 'baz';
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => 'baz', 'baz' => true),
+                ['foo' => '', 'bar' => 'baz', 'baz' => true],
                 'Change a string',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($value, $object, $attributeName, $format, $context) {
                         $this->assertSame('baz', $value);
                         $this->assertInstanceOf(ObjectConstructorDummy::class, $object);
@@ -522,23 +522,23 @@ public function provideCallbacks()
                         $this->assertSame('any', $format);
                         $this->assertArrayHasKey('circular_reference_limit_counters', $context);
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => null, 'baz' => true),
+                ['foo' => '', 'bar' => null, 'baz' => true],
                 'Null an item',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return $bar->format('d-m-Y H:i:s');
                     },
-                ),
+                ],
                 new \DateTime('2011-09-10 06:30:00'),
-                array('foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true),
+                ['foo' => '', 'bar' => '10-09-2011 06:30:00', 'baz' => true],
                 'Format a date',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         $foos = '';
                         foreach ($bars as $bar) {
@@ -547,22 +547,22 @@ public function provideCallbacks()
 
                         return $foos;
                     },
-                ),
-                array(new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 'bazquux', 'baz' => true),
+                ],
+                [new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 'bazquux', 'baz' => true],
                 'Collect a property',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         return \count($bars);
                     },
-                ),
-                array(new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)),
-                array('foo' => '', 'bar' => 2, 'baz' => true),
+                ],
+                [new ObjectConstructorDummy('baz', '', false), new ObjectConstructorDummy('quux', '', false)],
+                ['foo' => '', 'bar' => 2, 'baz' => true],
                 'Count a property',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -599,8 +599,8 @@ public function testLegacyUnableToNormalizeCircularReference()
 
     private function doTestUnableToNormalizeCircularReference(bool $legacy = false)
     {
-        $legacy ? $this->normalizer->setCircularReferenceLimit(2) : $this->createNormalizer(array(ObjectNormalizer::CIRCULAR_REFERENCE_LIMIT => 2));
-        $serializer = new Serializer(array($this->normalizer));
+        $legacy ? $this->normalizer->setCircularReferenceLimit(2) : $this->createNormalizer([ObjectNormalizer::CIRCULAR_REFERENCE_LIMIT => 2]);
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $obj = new CircularReferenceDummy();
@@ -610,16 +610,16 @@ private function doTestUnableToNormalizeCircularReference(bool $legacy = false)
 
     public function testSiblingReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $siblingHolder = new SiblingHolder();
 
-        $expected = array(
-            'sibling0' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling1' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling2' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-        );
+        $expected = [
+            'sibling0' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling1' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling2' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+        ];
         $this->assertEquals($expected, $this->normalizer->normalize($siblingHolder));
     }
 
@@ -640,7 +640,7 @@ private function doTestCircularReferenceHandler(bool $legacy = false)
         }, $legacy);
 
         $obj = new CircularReferenceDummy();
-        $expected = array('me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy');
+        $expected = ['me' => 'Symfony\Component\Serializer\Tests\Fixtures\CircularReferenceDummy'];
         $this->assertEquals($expected, $this->normalizer->normalize($obj));
 
         $this->createNormalizerWithCircularReferenceHandler(function ($obj, string $format, array $context) {
@@ -650,13 +650,13 @@ private function doTestCircularReferenceHandler(bool $legacy = false)
 
             return \get_class($obj);
         }, $legacy);
-        $this->assertEquals($expected, $this->normalizer->normalize($obj, 'test', array('foo' => 'bar')));
+        $this->assertEquals($expected, $this->normalizer->normalize($obj, 'test', ['foo' => 'bar']));
     }
 
     private function createNormalizerWithCircularReferenceHandler(callable $handler, bool $legacy)
     {
-        $legacy ? $this->normalizer->setCircularReferenceHandler($handler) : $this->createNormalizer(array(ObjectNormalizer::CIRCULAR_REFERENCE_HANDLER => $handler));
-        $this->serializer = new Serializer(array($this->normalizer));
+        $legacy ? $this->normalizer->setCircularReferenceHandler($handler) : $this->createNormalizer([ObjectNormalizer::CIRCULAR_REFERENCE_HANDLER => $handler]);
+        $this->serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($this->serializer);
     }
 
@@ -664,7 +664,7 @@ public function testDenormalizeNonExistingAttribute()
     {
         $this->assertEquals(
             new ObjectDummy(),
-            $this->normalizer->denormalize(array('non_existing' => true), __NAMESPACE__.'\ObjectDummy')
+            $this->normalizer->denormalize(['non_existing' => true], __NAMESPACE__.'\ObjectDummy')
         );
     }
 
@@ -675,28 +675,28 @@ public function testNoTraversableSupport()
 
     public function testNormalizeStatic()
     {
-        $this->assertEquals(array('foo' => 'K'), $this->normalizer->normalize(new ObjectWithStaticPropertiesAndMethods()));
+        $this->assertEquals(['foo' => 'K'], $this->normalizer->normalize(new ObjectWithStaticPropertiesAndMethods()));
     }
 
     public function testNormalizeUpperCaseAttributes()
     {
-        $this->assertEquals(array('Foo' => 'Foo', 'Bar' => 'BarBar'), $this->normalizer->normalize(new ObjectWithUpperCaseAttributeNames()));
+        $this->assertEquals(['Foo' => 'Foo', 'Bar' => 'BarBar'], $this->normalizer->normalize(new ObjectWithUpperCaseAttributeNames()));
     }
 
     public function testNormalizeNotSerializableContext()
     {
         $objectDummy = new ObjectDummy();
-        $expected = array(
+        $expected = [
             'foo' => null,
             'baz' => null,
             'fooBar' => '',
             'camelCase' => null,
             'object' => null,
             'bar' => null,
-        );
+        ];
 
-        $this->assertEquals($expected, $this->normalizer->normalize($objectDummy, null, array('not_serializable' => function () {
-        })));
+        $this->assertEquals($expected, $this->normalizer->normalize($objectDummy, null, ['not_serializable' => function () {
+        }]));
     }
 
     public function testMaxDepth()
@@ -723,41 +723,41 @@ private function doTestMaxDepth(bool $legacy = false)
         $level2->child = $level3;
 
         $this->createNormalizerWithMaxDepthHandler(null, $legacy);
-        $result = $this->serializer->normalize($level1, null, array(ObjectNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $this->serializer->normalize($level1, null, [ObjectNormalizer::ENABLE_MAX_DEPTH => true]);
 
-        $expected = array(
+        $expected = [
             'bar' => null,
             'foo' => 'level1',
-            'child' => array(
+            'child' => [
                     'bar' => null,
                     'foo' => 'level2',
-                    'child' => array(
+                    'child' => [
                             'bar' => null,
                             'child' => null,
-                        ),
-                ),
-        );
+                        ],
+                ],
+        ];
 
         $this->assertEquals($expected, $result);
 
-        $expected = array(
+        $expected = [
             'bar' => null,
             'foo' => 'level1',
-            'child' => array(
+            'child' => [
                 'bar' => null,
                 'foo' => 'level2',
-                'child' => array(
+                'child' => [
                     'bar' => null,
                     'child' => null,
                     'foo' => 'handler',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
 
         $this->createNormalizerWithMaxDepthHandler(function () {
             return 'handler';
         }, $legacy);
-        $result = $this->serializer->normalize($level1, null, array(ObjectNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $this->serializer->normalize($level1, null, [ObjectNormalizer::ENABLE_MAX_DEPTH => true]);
         $this->assertEquals($expected, $result);
 
         $this->createNormalizerWithMaxDepthHandler(function ($object, $parentObject, $attributeName, $format, $context) {
@@ -769,21 +769,21 @@ private function doTestMaxDepth(bool $legacy = false)
 
             return 'handler';
         }, $legacy);
-        $this->serializer->normalize($level1, 'test', array(ObjectNormalizer::ENABLE_MAX_DEPTH => true));
+        $this->serializer->normalize($level1, 'test', [ObjectNormalizer::ENABLE_MAX_DEPTH => true]);
     }
 
     priv
10000
ate function createNormalizerWithMaxDepthHandler(callable $handler = null, bool $legacy = false)
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         if ($legacy) {
-            $this->createNormalizer(array(), $classMetadataFactory);
+            $this->createNormalizer([], $classMetadataFactory);
             if (null !== $handler) {
                 $this->normalizer->setMaxDepthHandler($handler);
             }
         } else {
-            $this->createNormalizer(array(ObjectNormalizer::MAX_DEPTH_HANDLER => $handler), $classMetadataFactory);
+            $this->createNormalizer([ObjectNormalizer::MAX_DEPTH_HANDLER => $handler], $classMetadataFactory);
         }
-        $this->serializer = new Serializer(array($this->normalizer));
+        $this->serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($this->serializer);
     }
 
@@ -792,20 +792,20 @@ private function createNormalizerWithMaxDepthHandler(callable $handler = null, b
      */
     public function testThrowUnexpectedValueException()
     {
-        $this->normalizer->denormalize(array('foo' => 'bar'), ObjectTypeHinted::class);
+        $this->normalizer->denormalize(['foo' => 'bar'], ObjectTypeHinted::class);
     }
 
     public function testDenomalizeRecursive()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $obj = $serializer->denormalize(array(
-            'inner' => array('foo' => 'foo', 'bar' => 'bar'),
+        $obj = $serializer->denormalize([
+            'inner' => ['foo' => 'foo', 'bar' => 'bar'],
             'date' => '1988/01/21',
-            'inners' => array(array('foo' => 1), array('foo' => 2)),
-        ), ObjectOuter::class);
+            'inners' => [['foo' => 1], ['foo' => 2]],
+        ], ObjectOuter::class);
 
         $this->assertSame('foo', $obj->getInner()->foo);
         $this->assertSame('bar', $obj->getInner()->bar);
@@ -816,12 +816,12 @@ public function testDenomalizeRecursive()
 
     public function testAcceptJsonNumber()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $this->assertSame(10.0, $serializer->denormalize(array('number' => 10), JsonNumber::class, 'json')->number);
-        $this->assertSame(10.0, $serializer->denormalize(array('number' => 10), JsonNumber::class, 'jsonld')->number);
+        $this->assertSame(10.0, $serializer->denormalize(['number' => 10], JsonNumber::class, 'json')->number);
+        $this->assertSame(10.0, $serializer->denormalize(['number' => 10], JsonNumber::class, 'jsonld')->number);
     }
 
     /**
@@ -831,9 +831,9 @@ public function testAcceptJsonNumber()
     public function testRejectInvalidType()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
-        $serializer->denormalize(array('date' => 'foo'), ObjectOuter::class);
+        $serializer->denormalize(['date' => 'foo'], ObjectOuter::class);
     }
 
     /**
@@ -842,21 +842,21 @@ public function testRejectInvalidType()
      */
     public function testRejectInvalidKey()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor(), new ReflectionExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor(), new ReflectionExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array(new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer));
+        $serializer = new Serializer([new ArrayDenormalizer(), new DateTimeNormalizer(), $normalizer]);
 
-        $serializer->denormalize(array('inners' => array('a' => array('foo' => 1))), ObjectOuter::class);
+        $serializer->denormalize(['inners' => ['a' => ['foo' => 1]]], ObjectOuter::class);
     }
 
     public function testDoNotRejectInvalidTypeOnDisableTypeEnforcementContextOption()
     {
-        $extractor = new PropertyInfoExtractor(array(), array(new PhpDocExtractor()));
+        $extractor = new PropertyInfoExtractor([], [new PhpDocExtractor()]);
         $normalizer = new ObjectNormalizer(null, null, null, $extractor);
-        $serializer = new Serializer(array($normalizer));
-        $context = array(ObjectNormalizer::DISABLE_TYPE_ENFORCEMENT => true);
+        $serializer = new Serializer([$normalizer]);
+        $context = [ObjectNormalizer::DISABLE_TYPE_ENFORCEMENT => true];
 
-        $this->assertSame('foo', $serializer->denormalize(array('number' => 'foo'), JsonNumber::class, null, $context)->number);
+        $this->assertSame('foo', $serializer->denormalize(['number' => 'foo'], JsonNumber::class, null, $context)->number);
     }
 
     public function testExtractAttributesRespectsFormat()
@@ -867,7 +867,7 @@ public function testExtractAttributesRespectsFormat()
         $data->setFoo('bar');
         $data->bar = 'foo';
 
-        $this->assertSame(array('foo' => 'bar', 'bar' => 'foo'), $normalizer->normalize($data, 'foo_and_bar_included'));
+        $this->assertSame(['foo' => 'bar', 'bar' => 'foo'], $normalizer->normalize($data, 'foo_and_bar_included'));
     }
 
     public function testExtractAttributesRespectsContext()
@@ -878,13 +878,13 @@ public function testExtractAttributesRespectsContext()
         $data->setFoo('bar');
         $data->bar = 'foo';
 
-        $this->assertSame(array('foo' => 'bar', 'bar' => 'foo'), $normalizer->normalize($data, null, array('include_foo_and_bar' => true)));
+        $this->assertSame(['foo' => 'bar', 'bar' => 'foo'], $normalizer->normalize($data, null, ['include_foo_and_bar' => true]));
     }
 
     public function testAttributesContextNormalize()
     {
         $normalizer = new ObjectNormalizer();
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->foo = 'innerFoo';
@@ -895,23 +895,23 @@ public function testAttributesContextNormalize()
         $objectDummy->setBaz(true);
         $objectDummy->setObject($objectInner);
 
-        $context = array('attributes' => array('foo', 'baz', 'object' => array('foo')));
+        $context = ['attributes' => ['foo', 'baz', 'object' => ['foo']]];
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'baz' => true,
-                'object' => array('foo' => 'innerFoo'),
-            ),
+                'object' => ['foo' => 'innerFoo'],
+            ],
             $serializer->normalize($objectDummy, null, $context)
         );
 
-        $context = array('attributes' => array('foo', 'baz', 'object'));
+        $context = ['attributes' => ['foo', 'baz', 'object']];
         $this->assertEquals(
-            array(
+            [
                 'foo' => 'foo',
                 'baz' => true,
-                'object' => array('foo' => 'innerFoo', 'bar' => 'innerBar'),
-            ),
+                'object' => ['foo' => 'innerFoo', 'bar' => 'innerBar'],
+            ],
             $serializer->normalize($objectDummy, null, $context)
         );
     }
@@ -919,7 +919,7 @@ public function testAttributesContextNormalize()
     public function testAttributesContextDenormalize()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->foo = 'innerFoo';
@@ -928,38 +928,38 @@ public function testAttributesContextDenormalize()
         $objectOuter->bar = 'bar';
         $objectOuter->setInner($objectInner);
 
-        $context = array('attributes' => array('bar', 'inner' => array('foo')));
+        $context = ['attributes' => ['bar', 'inner' => ['foo']]];
         $this->assertEquals($objectOuter, $serializer->denormalize(
-            array(
+            [
                 'foo' => 'foo',
                 'bar' => 'bar',
                 'date' => '2017-02-03',
-                'inner' => array('foo' => 'innerFoo', 'bar' => 'innerBar'),
-            ), ObjectOuter::class, null, $context));
+                'inner' => ['foo' => 'innerFoo', 'bar' => 'innerBar'],
+            ], ObjectOuter::class, null, $context));
     }
 
     public function testAttributesContextDenormalizeConstructor()
     {
         $normalizer = new ObjectNormalizer(null, null, null, new ReflectionExtractor());
-        $serializer = new Serializer(array($normalizer));
+        $serializer = new Serializer([$normalizer]);
 
         $objectInner = new ObjectInner();
         $objectInner->bar = 'bar';
 
         $obj = new DummyWithConstructorObjectAndDefaultValue('a', $objectInner);
 
-        $context = array('attributes' => array('inner' => array('bar')));
-        $this->assertEquals($obj, $serializer->denormalize(array(
+        $context = ['attributes' => ['inner' => ['bar']]];
+        $this->assertEquals($obj, $serializer->denormalize([
             'foo' => 'b',
-            'inner' => array('foo' => 'foo', 'bar' => 'bar'),
-        ), DummyWithConstructorObjectAndDefaultValue::class, null, $context));
+            'inner' => ['foo' => 'foo', 'bar' => 'bar'],
+        ], DummyWithConstructorObjectAndDefaultValue::class, null, $context));
     }
 
     public function testNormalizeSameObjectWithDifferentAttributes()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new ObjectNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $dummy = new ObjectOuter();
@@ -971,37 +971,37 @@ public function testNormalizeSameObjectWithDifferentAttributes()
         $dummy->bar->foo = 'bar.foo';
         $dummy->bar->bar = 'bar.bar';
 
-        $this->assertEquals(array(
-            'foo' => array(
+        $this->assertEquals([
+            'foo' => [
                 'bar' => 'foo.bar',
-            ),
-            'bar' => array(
+            ],
+            'bar' => [
                 'foo' => 'bar.foo',
-            ),
-        ), $this->normalizer->normalize($dummy, 'json', array(
-            'attributes' => array(
-                'foo' => array('bar'),
-                'bar' => array('foo'),
-            ),
-        )));
+            ],
+        ], $this->normalizer->normalize($dummy, 'json', [
+            'attributes' => [
+                'foo' => ['bar'],
+                'bar' => ['foo'],
+            ],
+        ]));
     }
 
     public function testAdvancedNameConverter()
     {
         $nameConverter = new class() implements AdvancedNameConverterInterface {
-            public function normalize($propertyName, string $class = null, string $format = null, array $context = array())
+            public function normalize($propertyName, string $class = null, string $format = null, array $context = [])
             {
                 return sprintf('%s-%s-%s-%s', $propertyName, $class, $format, $context['foo']);
             }
 
-            public function denormalize($propertyName, string $class = null, string $format = null, array $context = array())
+            public function denormalize($propertyName, string $class = null, string $format = null, array $context = [])
             {
                 return sprintf('%s-%s-%s-%s', $propertyName, $class, $format, $context['foo']);
             }
         };
 
         $normalizer = new ObjectNormalizer(null, $nameConverter);
-        $this->assertArrayHasKey('foo-Symfony\Component\Serializer\Tests\Normalizer\ObjectDummy-json-bar', $normalizer->normalize(new ObjectDummy(), 'json', array('foo' => 'bar')));
+        $this->assertArrayHasKey('foo-Symfony\Component\Serializer\Tests\Normalizer\ObjectDummy-json-bar', $normalizer->normalize(new ObjectDummy(), 'json', ['foo' => 'bar']));
     }
 }
 
@@ -1103,7 +1103,7 @@ class ObjectConstructorOptionalArgsDummy
     public $bar;
     private $baz;
 
-    public function __construct($foo, $bar = array(), $baz = array())
+    public function __construct($foo, $bar = [], $baz = [])
     {
         $this->foo = $foo;
         $this->bar = $bar;
@@ -1131,7 +1131,7 @@ class ObjectConstructorArgsWithDefaultValueDummy
     protected $foo;
     protected $bar;
 
-    public function __construct($foo = array(), $bar)
+    public function __construct($foo = [], $bar)
     {
         $this->foo = $foo;
         $this->bar = $bar;
@@ -1222,13 +1222,13 @@ class ObjectInner
 
 class FormatAndContextAwareNormalizer extends ObjectNormalizer
 {
-    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = array())
+    protected function isAllowedAttribute($classOrObject, $attribute, $format = null, array $context = [])
     {
-        if (\in_array($attribute, array('foo', 'bar')) && 'foo_and_bar_included' === $format) {
+        if (\in_array($attribute, ['foo', 'bar']) && 'foo_and_bar_included' === $format) {
             return true;
         }
 
-        if (\in_array($attribute, array('foo', 'bar')) && isset($context['include_foo_and_bar']) && true === $context['include_foo_and_bar']) {
+        if (\in_array($attribute, ['foo', 'bar']) && isset($context['include_foo_and_bar']) && true === $context['include_foo_and_bar']) {
             return true;
         }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
index 091421f07271..26bccdfcad2e 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
@@ -41,7 +41,7 @@ protected function setUp()
         $this->createNormalizer();
     }
 
-    private function createNormalizer(array $defaultContext = array())
+    private function createNormalizer(array $defaultContext = [])
     {
         $this->serializer = $this->getMockBuilder('Symfony\Component\Serializer\SerializerInterface')->getMock();
         $this->normalizer = new PropertyNormalizer(null, null, null, null, null, $defaultContext);
@@ -55,7 +55,7 @@ public function testNormalize()
         $obj->setBar('bar');
         $obj->setCamelCase('camelcase');
         $this->assertEquals(
-            array('foo' => 'foo', 'bar' => 'bar', 'camelCase' => 'camelcase'),
+            ['foo' => 'foo', 'bar' => 'bar', 'camelCase' => 'camelcase'],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -63,7 +63,7 @@ public function testNormalize()
     public function testDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar'),
+            ['foo' => 'foo', 'bar' => 'bar'],
             __NAMESPACE__.'\PropertyDummy',
             'any'
         );
@@ -80,7 +80,7 @@ public function testNormalizeWithParentClass()
         $group->setKevin('Kevin');
         $group->setCoopTilleuls('coop');
         $this->assertEquals(
-            array('foo' => 'foo', 'bar' => 'bar', 'kevin' => 'Kevin', 'coopTilleuls' => 'coop', 'fooBar' => null, 'symfony' => null, 'baz' => 'baz'),
+            ['foo' => 'foo', 'bar' => 'bar', 'kevin' => 'Kevin', 'coopTilleuls' => 'coop', 'fooBar' => null, 'symfony' => null, 'baz' => 'baz'],
             $this->normalizer->normalize($group, 'any')
         );
     }
@@ -88,7 +88,7 @@ public function testNormalizeWithParentClass()
     public function testDenormalizeWithParentClass()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar', 'kevin' => 'Kevin', 'baz' => 'baz'),
+            ['foo' => 'foo', 'bar' => 'bar', 'kevin' => 'Kevin', 'baz' => 'baz'],
             GroupDummyChild::class,
             'any'
         );
@@ -102,7 +102,7 @@ public function testDenormalizeWithParentClass()
     public function testConstructorDenormalize()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => 'foo', 'bar' => 'bar'),
+            ['foo' => 'foo', 'bar' => 'bar'],
             __NAMESPACE__.'\PropertyConstructorDummy',
             'any'
         );
@@ -113,7 +113,7 @@ public function testConstructorDenormalize()
     public function testConstructorDenormalizeWithNullArgument()
     {
         $obj = $this->normalizer->denormalize(
-            array('foo' => null, 'bar' => 'bar'),
+            ['foo' => null, 'bar' => 'bar'],
             __NAMESPACE__.'\PropertyConstructorDummy', '
             any'
         );
@@ -139,7 +139,7 @@ public function testLegacyCallbacks($callbacks, $value, $result, $message)
 
     private function doTestCallbacks($callbacks, $value, $result, $message, bool $legacy = false)
     {
-        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer(array(PropertyNormalizer::CALLBACKS => $callbacks));
+        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer([PropertyNormalizer::CALLBACKS => $callbacks]);
 
         $obj = new PropertyConstructorDummy('', $value);
 
@@ -171,8 +171,8 @@ public function testLegacyUncallableCallbacks()
      */
     private function doTestUncallableCallbacks(bool $legacy = false)
     {
-        $callbacks = array('bar' => null);
-        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer(array(PropertyNormalizer::CALLBACKS => $callbacks));
+        $callbacks = ['bar' => null];
+        $legacy ? $this->normalizer->setCallbacks($callbacks) : $this->createNormalizer([PropertyNormalizer::CALLBACKS => $callbacks]);
 
         $obj = new PropertyConstructorDummy('baz', 'quux');
 
@@ -191,15 +191,15 @@ public function testLegacyIgnoredAttributes()
 
     private function doTestIgnoredAttributes(bool $legacy = false)
     {
-        $ignoredAttributes = array('foo', 'bar', 'camelCase');
-        $legacy ? $this->normalizer->setIgnoredAttributes($ignoredAttributes) : $this->createNormalizer(array(PropertyNormalizer::IGNORED_ATTRIBUTES => $ignoredAttributes));
+        $ignoredAttributes = ['foo', 'bar', 'camelCase'];
+        $legacy ? $this->normalizer->setIgnoredAttributes($ignoredAttributes) : $this->createNormalizer([PropertyNormalizer::IGNORED_ATTRIBUTES => $ignoredAttributes]);
 
         $obj = new PropertyDummy();
         $obj->foo = 'foo';
         $obj->setBar('bar');
 
         $this->assertEquals(
-            array(),
+            [],
             $this->normalizer->normalize($obj, 'any')
         );
     }
@@ -218,19 +218,19 @@ public function testGroupsNormalize()
         $obj->setKevin('kevin');
         $obj->setCoopTilleuls('coopTilleuls');
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             'bar' => 'bar',
-        ), $this->normalizer->normalize($obj, null, array(PropertyNormalizer::GROUPS => array('c'))));
+        ], $this->normalizer->normalize($obj, null, [PropertyNormalizer::GROUPS => ['c']]));
 
         // The PropertyNormalizer is also able to hydrate properties from parent classes
-        $this->assertEquals(array(
+        $this->assertEquals([
             'symfony' => 'symfony',
             'foo' => 'foo',
             'fooBar' => 'fooBar',
             'bar' => 'bar',
             'kevin' => 'kevin',
             'coopTilleuls' => 'coopTilleuls',
-        ), $this->normalizer->normalize($obj, null, array(PropertyNormalizer::GROUPS => array('a', 'c'))));
+        ], $this->normalizer->normalize($obj, null, [PropertyNormalizer::GROUPS => ['a', 'c']]));
     }
 
     public function testGroupsDenormalize()
@@ -242,13 +242,13 @@ public function testGroupsDenormalize()
         $obj = new GroupDummy();
         $obj->setFoo('foo');
 
-        $toNormalize = array('foo' => 'foo', 'bar' => 'bar');
+        $toNormalize = ['foo' => 'foo', 'bar' => 'bar'];
 
         $normalized = $this->normalizer->denormalize(
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(PropertyNormalizer::GROUPS => array('a'))
+            [PropertyNormalizer::GROUPS => ['a']]
         );
         $this->assertEquals($obj, $normalized);
 
@@ -258,7 +258,7 @@ public function testGroupsDenormalize()
             $toNormalize,
             'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy',
             null,
-            array(PropertyNormalizer::GROUPS => array('a', 'b'))
+            [PropertyNormalizer::GROUPS => ['a', 'b']]
         );
         $this->assertEquals($obj, $normalized);
     }
@@ -275,12 +275,12 @@ public function testGroupsNormalizeWithNameConverter()
         $obj->setCoopTilleuls('les-tilleuls.coop');
 
         $this->assertEquals(
-            array(
+            [
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
-            ),
-            $this->normalizer->normalize($obj, null, array(PropertyNormalizer::GROUPS => array('name_converter')))
+            ],
+            $this->normalizer->normalize($obj, null, [PropertyNormalizer::GROUPS => ['name_converter']])
         );
     }
 
@@ -296,49 +296,49 @@ public function testGroupsDenormalizeWithNameConverter()
 
         $this->assertEquals(
             $obj,
-            $this->normalizer->denormalize(array(
+            $this->normalizer->denormalize([
                 'bar' => null,
                 'foo_bar' => '@dunglas',
                 'symfony' => '@coopTilleuls',
                 'coop_tilleuls' => 'les-tilleuls.coop',
-            ), 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, array(PropertyNormalizer::GROUPS => array('name_converter')))
+            ], 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy', null, [PropertyNormalizer::GROUPS => ['name_converter']])
         );
     }
 
     public function provideCallbacks()
     {
-        return array(
-            array(
-                array(
+        return [
+            [
+                [
                     'bar' => function ($bar) {
                         return 'baz';
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => 'baz'),
+                ['foo' => '', 'bar' => 'baz'],
                 'Change a string',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                     },
-                ),
+                ],
                 'baz',
-                array('foo' => '', 'bar' => null),
+                ['foo' => '', 'bar' => null],
                 'Null an item',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bar) {
                         return $bar->format('d-m-Y H:i:s');
                     },
-                ),
+                ],
                 new \DateTime('2011-09-10 06:30:00'),
-                array('foo' => '', 'bar' => '10-09-2011 06:30:00'),
+                ['foo' => '', 'bar' => '10-09-2011 06:30:00'],
                 'Format a date',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         $foos = '';
                         foreach ($bars as $bar) {
@@ -347,22 +347,22 @@ public function provideCallbacks()
 
                         return $foos;
                     },
-                ),
-                array(new PropertyConstructorDummy('baz', ''), new PropertyConstructorDummy('quux', '')),
-                array('foo' => '', 'bar' => 'bazquux'),
+                ],
+                [new PropertyConstructorDummy('baz', ''), new PropertyConstructorDummy('quux', '')],
+                ['foo' => '', 'bar' => 'bazquux'],
                 'Collect a property',
-            ),
-            array(
-                array(
+            ],
+            [
+                [
                     'bar' => function ($bars) {
                         return \count($bars);
                     },
-                ),
-                array(new PropertyConstructorDummy('baz', ''), new PropertyConstructorDummy('quux', '')),
-                array('foo' => '', 'bar' => 2),
+                ],
+                [new PropertyConstructorDummy('baz', ''), new PropertyConstructorDummy('quux', '')],
+                ['foo' => '', 'bar' => 2],
                 'Count a property',
-            ),
-        );
+            ],
+        ];
     }
 
     /**
@@ -383,8 +383,8 @@ public function testLegacyUnableToNormalizeCircularReference()
 
     private function doTestUnableToNormalizeCircularReference(bool $legacy = false)
     {
-        $legacy ? $this->normalizer->setCircularReferenceLimit(2) : $this->createNormalizer(array(PropertyNormalizer::CIRCULAR_REFERENCE_LIMIT => 2));
-        $this->serializer = new Serializer(array($this->normalizer));
+        $legacy ? $this->normalizer->setCircularReferenceLimit(2) : $this->createNormalizer([PropertyNormalizer::CIRCULAR_REFERENCE_LIMIT => 2]);
+        $this->serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($this->serializer);
 
         $obj = new PropertyCircularReferenceDummy();
@@ -394,16 +394,16 @@ private function doTestUnableToNormalizeCircularReference(bool $legacy = false)
 
     public function testSiblingReference()
     {
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $siblingHolder = new PropertySiblingHolder();
 
-        $expected = array(
-            'sibling0' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling1' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-            'sibling2' => array('coopTilleuls' => 'Les-Tilleuls.coop'),
-        );
+        $expected = [
+            'sibling0' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling1' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+            'sibling2' => ['coopTilleuls' => 'Les-Tilleuls.coop'],
+        ];
         $this->assertEquals($expected, $this->normalizer->normalize($siblingHolder));
     }
 
@@ -422,14 +422,14 @@ private function doTestCircularReferenceHandler(bool $legacy = false)
         $handler = function ($obj) {
             return \get_class($obj);
         };
-        $legacy ? $this->normalizer->setCircularReferenceHandler($handler) : $this->createNormalizer(array(PropertyNormalizer::CIRCULAR_REFERENCE_HANDLER => $handler));
+        $legacy ? $this->normalizer->setCircularReferenceHandler($handler) : $this->createNormalizer([PropertyNormalizer::CIRCULAR_REFERENCE_HANDLER => $handler]);
 
-        $this->serializer = new Serializer(array($this->normalizer));
+        $this->serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($this->serializer);
 
         $obj = new PropertyCircularReferenceDummy();
 
-        $expected = array('me' => 'Symfony\Component\Serializer\Tests\Fixtures\PropertyCircularReferenceDummy');
+        $expected = ['me' => 'Symfony\Component\Serializer\Tests\Fixtures\PropertyCircularReferenceDummy'];
         $this->assertEquals($expected, $this->normalizer->normalize($obj));
     }
 
@@ -437,13 +437,13 @@ public function testDenormalizeNonExistingAttribute()
     {
         $this->assertEquals(
             new PropertyDummy(),
-            $this->normalizer->denormalize(array('non_existing' => true), __NAMESPACE__.'\PropertyDummy')
+            $this->normalizer->denormalize(['non_existing' => true], __NAMESPACE__.'\PropertyDummy')
         );
     }
 
     public function testDenormalizeShouldIgnoreStaticProperty()
     {
-        $obj = $this->normalizer->denormalize(array('outOfScope' => true), __NAMESPACE__.'\PropertyDummy');
+        $obj = $this->normalizer->denormalize(['outOfScope' => true], __NAMESPACE__.'\PropertyDummy');
 
         $this->assertEquals(new PropertyDummy(), $obj);
         $this->assertEquals('out_of_scope', PropertyDummy::$outOfScope);
@@ -479,7 +479,7 @@ public function testMaxDepth()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
         $this->normalizer = new PropertyNormalizer($classMetadataFactory);
-        $serializer = new Serializer(array($this->normalizer));
+        $serializer = new Serializer([$this->normalizer]);
         $this->normalizer->setSerializer($serializer);
 
         $level1 = new MaxDepthDummy();
@@ -493,20 +493,20 @@ public function testMaxDepth()
         $level3->foo = 'level3';
         $level2->child = $level3;
 
-        $result = $serializer->normalize($level1, null, array(PropertyNormalizer::ENABLE_MAX_DEPTH => true));
+        $result = $serializer->normalize($level1, null, [PropertyNormalizer::ENABLE_MAX_DEPTH => true]);
 
-        $expected = array(
+        $expected = [
             'foo' => 'level1',
-            'child' => array(
+            'child' => [
                     'foo' => 'level2',
-                    'child' => array(
+                    'child' => [
                             'child' => null,
                             'bar' => null,
-                        ),
+                        ],
                     'bar' => null,
-                ),
+                ],
             'bar' => null,
-        );
+        ];
 
         $this->assertEquals($expected, $result);
     }
diff --git a/src/Symfony/Component/Serializer/Tests/SerializerTest.php b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
index 222a2d709170..ce6be57f3396 100644
--- a/src/Symfony/Component/Serializer/Tests/SerializerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
@@ -61,7 +61,7 @@ public function testInterface()
      */
     public function testDeprecationErrorOnInvalidNormalizer()
     {
-        new Serializer(array(new \stdClass()));
+        new Serializer([new \stdClass()]);
     }
 
     /**
@@ -70,7 +70,7 @@ public function testDeprecationErrorOnInvalidNormalizer()
      */
     public function testDeprecationErrorOnInvalidEncoder()
     {
-        new Serializer(array(), array(new \stdClass()));
+        new Serializer([], [new \stdClass()]);
     }
 
     /**
@@ -352,7 +352,7 @@ public function testDeserializeArray()
 
     public function testNormalizerAware()
     {
-        $normalizerAware = $this->getMockBuilder(array(NormalizerAwareInterface::class, NormalizerInterface::class))->getMock();
+        $normalizerAware = $this->getMockBuilder([NormalizerAwareInterface::class, NormalizerInterface::class])->getMock();
         $normalizerAware->expects($this->once())
             ->method('setNormalizer')
             ->with($this->isInstanceOf(NormalizerInterface::class));
@@ -362,7 +362,7 @@ public function testNormalizerAware()
 
     public function testDenormalizerAware()
     {
-        $denormalizerAware = $this->getMockBuilder(array(DenormalizerAwareInterface::class, DenormalizerInterface::class))->getMock();
+        $denormalizerAware = $this->getMockBuilder([DenormalizerAwareInterface::class, DenormalizerInterface::class])->getMock();
         $denormalizerAware->expects($this->once())
             ->method('setDenormalizer')
             ->with($this->isInstanceOf(DenormalizerInterface::class));
diff --git a/src/Symfony/Component/Translation/Catalogue/MergeOperation.php b/src/Symfony/Component/Translation/Catalogue/MergeOperation.php
index 8dd4026176cb..d2f4abd13ff4 100644
--- a/src/Symfony/Component/Translation/Catalogue/MergeOperation.php
+++ b/src/Symfony/Component/Translation/Catalogue/MergeOperation.php
@@ -29,16 +29,16 @@ class MergeOperation extends AbstractOperation
      */
     protected function processDomain($domain)
     {
-        $this->messages[$domain] = array(
-            'all' => array(),
-            'new' => array(),
-            'obsolete' => array(),
-        );
+        $this->messages[$domain] = [
+            'all' => [],
+            'new' => [],
+            'obsolete' => [],
+        ];
         $intlDomain = $domain.MessageCatalogueInterface::INTL_DOMAIN_SUFFIX;
 
         foreach ($this->source->all($domain) as $id => $message) {
             $this->messages[$domain]['all'][$id] = $message;
-            $this->result->add(array($id => $message), $this->source->defines($id, $intlDomain) ? $intlDomain : $domain);
+            $this->result->add([$id => $message], $this->source->defines($id, $intlDomain) ? $intlDomain : $domain);
             if (null !== $keyMetadata = $this->source->getMetadata($id, $domain)) {
                 $this->result->setMetadata($id, $keyMetadata, $domain);
             }
@@ -48,7 +48,7 @@ protected function processDomain($domain)
             if (!$this->source->has($id, $domain)) {
                 $this->messages[$domain]['all'][$id] = $message;
                 $this->messages[$domain]['new'][$id] = $message;
-                $this->result->add(array($id => $message), $this->target->defines($id, $intlDomain) ? $intlDomain : $domain);
+                $this->result->add([$id => $message], $this->target->defines($id, $intlDomain) ? $intlDomain : $domain);
                 if (null !== $keyMetadata = $this->target->getMetadata($id, $domain)) {
                     $this->result->setMetadata($id, $keyMetadata, $domain);
                 }
diff --git a/src/Symfony/Component/Translation/Catalogue/TargetOperation.php b/src/Symfony/Component/Translation/Catalogue/TargetOperation.php
index 523022550ae7..22aa9a391117 100644
--- a/src/Symfony/Component/Translation/Catalogue/TargetOperation.php
+++ b/src/Symfony/Component/Translation/Catalogue/TargetOperation.php
@@ -30,11 +30,11 @@ class TargetOperation extends AbstractOperation
      */
     protected function processDomain($domain)
     {
-        $this->messages[$domain] = array(
-            'all' => array(),
-            'new' => array(),
-            'obsolete' => array(),
-        );
+        $this->messages[$domain] = [
+            'all' => [],
+            'new' => [],
+            'obsolete' => [],
+        ];
         $intlDomain = $domain.MessageCatalogueInterface::INTL_DOMAIN_SUFFIX;
 
         // For 'all' messages, the code can't be simplified as ``$this->messages[$domain]['all'] = $target->all($domain);``,
@@ -49,7 +49,7 @@ protected function processDomain($domain)
         foreach ($this->source->all($domain) as $id => $message) {
             if ($this->target->has($id, $domain)) {
                 $this->messages[$domain]['all'][$id] = $message;
-                $this->result->add(array($id => $message), $this->target->defines($id, $intlDomain) ? $intlDomain : $domain);
+                $this->result->add([$id => $message], $this->target->defines($id, $intlDomain) ? $intlDomain : $domain);
                 if (null !== $keyMetadata = $this->source->getMetadata($id, $domain)) {
                     $this->result->setMetadata($id, $keyMetadata, $domain);
                 }
@@ -62,7 +62,7 @@ protected function processDomain($domain)
             if (!$this->source->has($id, $domain)) {
                 $this->messages[$domain]['all'][$id] = $message;
                 $this->messages[$domain]['new'][$id] = $message;
-                $this->result->add(array($id => $message), $this->target->defines($id, $intlDomain) ? $intlDomain : $domain);
+                $this->result->add([$id => $message], $this->target->defines($id, $intlDomain) ? $intlDomain : $domain);
                 if (null !== $keyMetadata = $this->target->getMetadata($id, $domain)) {
                     $this->result->setMetadata($id, $keyMetadata, $domain);
                 }
diff --git a/src/Symfony/Component/Translation/Command/XliffLintCommand.php b/src/Symfony/Component/Translation/Command/XliffLintCommand.php
index 17e1a72bb4cb..f8791a490ec0 100644
--- a/src/Symfony/Component/Translation/Command/XliffLintCommand.php
+++ b/src/Symfony/Component/Translation/Command/XliffLintCommand.php
@@ -89,10 +89,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
             }
 
-            return $this->display($io, array($this->validate($stdin)));
+            return $this->display($io, [$this->validate($stdin)]);
         }
 
-        $filesInfo = array();
+        $filesInfo = [];
         foreach ($filenames as $filename) {
             if (!$this->isReadable($filename)) {
                 throw new RuntimeException(sprintf('File or directory "%s" is not readable.', $filename));
@@ -108,11 +108,11 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
     private function validate($content, $file = null)
     {
-        $errors = array();
+        $errors = [];
 
         // Avoid: Warning DOMDocument::loadXML(): Empty string supplied as input
         if ('' === trim($content)) {
-            return array('file' => $file, 'valid' => true);
+            return ['file' => $file, 'valid' => true];
         }
 
         libxml_use_internal_errors(true);
@@ -127,23 +127,23 @@ private function validate($content, $file = null)
             $expectedFilenamePattern = $this->requireStrictFileNames ? sprintf('/^.*\.%s\.xlf/', $normalizedLocale) : sprintf('/^(.*\.%s\.xlf|%s\..*\.xlf)/', $normalizedLocale, $normalizedLocale);
 
             if (0 === preg_match($expectedFilenamePattern, basename($file))) {
-                $errors[] = array(
+                $errors[] = [
                     'line' => -1,
                     'column' => -1,
                     'message' => sprintf('There is a mismatch between the language included in the file name ("%s") and the "%s" value used in the "target-language" attribute of the file.', basename($file), $targetLanguage),
-                );
+                ];
             }
         }
 
         foreach (XliffUtils::validateSchema($document) as $xmlError) {
-            $errors[] = array(
+            $errors[] = [
                 'line' => $xmlError['line'],
                 'column' => $xmlError['column'],
                 'message' => $xmlError['message'],
-            );
+            ];
         }
 
-        return array('file' => $file, 'valid' => 0 === \count($errors), 'messages' => $errors);
+        return ['file' => $file, 'valid' => 0 === \count($errors), 'messages' => $errors];
     }
 
     private function display(SymfonyStyle $io, array $files)
@@ -210,7 +210,7 @@ private function getFiles($fileOrDirectory)
         }
 
         foreach ($this->getDirectoryIterator($fileOrDirectory) as $file) {
-            if (!\in_array($file->getExtension(), array('xlf', 'xliff'))) {
+            if (!\in_array($file->getExtension(), ['xlf', 'xliff'])) {
                 continue;
             }
 
@@ -263,7 +263,7 @@ private function isReadable($fileOrDirectory)
 
     private function getTargetLanguageFromFile(\DOMDocument $xliffContents): ?string
     {
-        foreach ($xliffContents->getElementsByTagName('file')[0]->attributes ?? array() as $attribute) {
+        foreach ($xliffContents->getElementsByTagName('file')[0]->attributes ?? [] as $attribute) {
             if ('target-language' === $attribute->nodeName) {
                 return $attribute->nodeValue;
             }
diff --git a/src/Symfony/Component/Translation/DataCollectorTranslator.php b/src/Symfony/Component/Translation/DataCollectorTranslator.php
index ca6bedc71bfa..39561ec92e27 100644
--- a/src/Symfony/Component/Translation/DataCollectorTranslator.php
+++ b/src/Symfony/Component/Translation/DataCollectorTranslator.php
@@ -30,7 +30,7 @@ class DataCollectorTranslator implements LegacyTranslatorInterface, TranslatorIn
      */
     private $translator;
 
-    private $messages = array();
+    private $messages = [];
 
     /**
      * @param TranslatorInterface $translator The translator must implement TranslatorBagInterface
@@ -50,7 +50,7 @@ public function __construct($translator)
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         $trans = $this->translator->trans($id, $parameters, $domain, $locale);
         $this->collectMessage($locale, $domain, $id, $trans, $parameters);
@@ -63,15 +63,15 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
      *
      * @deprecated since Symfony 4.2, use the trans() method instead with a %count% parameter
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         if ($this->translator instanceof TranslatorInterface) {
-            $trans = $this->translator->trans($id, array('%count%' => $number) + $parameters, $domain, $locale);
+            $trans = $this->translator->trans($id, ['%count%' => $number] + $parameters, $domain, $locale);
         }
 
         $trans = $this->translator->transChoice($id, $number, $parameters, $domain, $locale);
 
-        $this->collectMessage($locale, $domain, $id, $trans, array('%count%' => $number) + $parameters);
+        $this->collectMessage($locale, $domain, $id, $trans, ['%count%' => $number] + $parameters);
 
         return $trans;
     }
@@ -111,7 +111,7 @@ public function getFallbackLocales()
             return $this->translator->getFallbackLocales();
         }
 
-        return array();
+        return [];
     }
 
     /**
@@ -137,7 +137,7 @@ public function getCollectedMessages()
      * @param string      $translation
      * @param array|null  $parameters
      */
-    private function collectMessage($locale, $domain, $id, $translation, $parameters = array())
+    private function collectMessage($locale, $domain, $id, $translation, $parameters = [])
     {
         if (null === $domain) {
             $domain = 'messages';
@@ -164,7 +164,7 @@ private function collectMessage($locale, $domain, $id, $translation, $parameters
             $state = self::MESSAGE_MISSING;
         }
 
-        $this->messages[] = array(
+        $this->messages[] = [
             'locale' => $locale,
             'domain' => $domain,
             'id' => $id,
@@ -172,6 +172,6 @@ private function collectMessage($locale, $domain, $id, $translation, $parameters
             'parameters' => $parameters,
             'state' => $state,
             'transChoiceNumber' => isset($parameters['%count%']) && is_numeric($parameters['%count%']) ? $parameters['%count%'] : null,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/Translation/Dumper/FileDumper.php b/src/Symfony/Component/Translation/Dumper/FileDumper.php
index 7fe6576a211b..57ce9d21414e 100644
--- a/src/Symfony/Component/Translation/Dumper/FileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/FileDumper.php
@@ -84,7 +84,7 @@ public function dump(MessageCatalogue $messages, $options = [])
                 $intlPath = $options['path'].'/'.$this->getRelativePath($intlDomain, $messages->getLocale());
                 file_put_contents($intlPath, $this->formatCatalogue($messages, $intlDomain, $options));
 
-                $messages->replace(array(), $intlDomain);
+                $messages->replace([], $intlDomain);
 
                 try {
                     if ($messages->all($domain)) {
diff --git a/src/Symfony/Component/Translation/Formatter/IntlFormatter.php b/src/Symfony/Component/Translation/Formatter/IntlFormatter.php
index 338d5151f56c..1d5f468d460d 100644
--- a/src/Symfony/Component/Translation/Formatter/IntlFormatter.php
+++ b/src/Symfony/Component/Translation/Formatter/IntlFormatter.php
@@ -21,12 +21,12 @@
 class IntlFormatter implements IntlFormatterInterface
 {
     private $hasMessageFormatter;
-    private $cache = array();
+    private $cache = [];
 
     /**
      * {@inheritdoc}
      */
-    public function formatIntl(string $message, string $locale, array $parameters = array()): string
+    public function formatIntl(string $message, string $locale, array $parameters = []): string
     {
         if (!$formatter = $this->cache[$locale][$message] ?? null) {
             if (!($this->hasMessageFormatter ?? $this->hasMessageFormatter = class_exists(\MessageFormatter::class))) {
@@ -40,7 +40,7 @@ public function formatIntl(string $message, string $locale, array $parameters =
         }
 
         foreach ($parameters as $key => $value) {
-            if (\in_array($key[0] ?? null, array('%', '{'), true)) {
+            if (\in_array($key[0] ?? null, ['%', '{'], true)) {
                 unset($parameters[$key]);
                 $parameters[trim($key, '%{ }')] = $value;
             }
diff --git a/src/Symfony/Component/Translation/Formatter/IntlFormatterInterface.php b/src/Symfony/Component/Translation/Formatter/IntlFormatterInterface.php
index 5fc5d97d24e8..02fc6acbdf3b 100644
--- a/src/Symfony/Component/Translation/Formatter/IntlFormatterInterface.php
+++ b/src/Symfony/Component/Translation/Formatter/IntlFormatterInterface.php
@@ -23,5 +23,5 @@ interface IntlFormatterInterface
      *
      * @see http://icu-project.org/apiref/icu4c/classMessageFormat.html#details
      */
-    public function formatIntl(string $message, string $locale, array $parameters = array()): string;
+    public function formatIntl(string $message, string $locale, array $parameters = []): string;
 }
diff --git a/src/Symfony/Component/Translation/Formatter/MessageFormatter.php b/src/Symfony/Component/Translation/Formatter/MessageFormatter.php
index e36f242c89e4..030d7a5c3e8e 100644
--- a/src/Symfony/Component/Translation/Formatter/MessageFormatter.php
+++ b/src/Symfony/Component/Translation/Formatter/MessageFormatter.php
@@ -42,7 +42,7 @@ public function __construct($translator = null, IntlFormatterInterface $intlForm
     /**
      * {@inheritdoc}
      */
-    public function format($message, $locale, array $parameters = array())
+    public function format($message, $locale, array $parameters = [])
     {
         if ($this->translator instanceof TranslatorInterface) {
             return $this->translator->trans($message, $parameters, null, $locale);
@@ -54,7 +54,7 @@ public function format($message, $locale, array $parameters = array())
     /**
      * {@inheritdoc}
      */
-    public function formatIntl(string $message, string $locale, array $parameters = array()): string
+    public function formatIntl(string $message, string $locale, array $parameters = []): string
     {
         return $this->intlFormatter->formatIntl($message, $locale, $parameters);
     }
@@ -64,16 +64,16 @@ public function formatIntl(string $message, string $locale, array $parameters =
      *
      * @deprecated since Symfony 4.2, use format() with a %count% parameter instead
      */
-    public function choiceFormat($message, $number, $locale, array $parameters = array())
+    public function choiceFormat($message, $number, $locale, array $parameters = [])
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the format() one instead with a %%count%% parameter.', __METHOD__), E_USER_DEPRECATED);
 
-        $parameters = array('%count%' => $number) + $parameters;
+        $parameters = ['%count%' => $number] + $parameters;
 
         if ($this->translator instanceof TranslatorInterface) {
             return $this->format($message, $locale, $parameters);
         }
 
-        return $this->format($this->translator->transChoice($message, $number, array(), null, $locale), $locale, $parameters);
+        return $this->format($this->translator->transChoice($message, $number, [], null, $locale), $locale, $parameters);
     }
 }
diff --git a/src/Symfony/Component/Translation/IdentityTranslator.php b/src/Symfony/Component/Translation/IdentityTranslator.php
index 31abdaab1251..41807af04af2 100644
--- a/src/Symfony/Component/Translation/IdentityTranslator.php
+++ b/src/Symfony/Component/Translation/IdentityTranslator.php
@@ -43,7 +43,7 @@ public function __construct(MessageSelector $selector = null)
      *
      * @deprecated since Symfony 4.2, use the trans() method instead with a %count% parameter
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%count%" parameter.', __METHOD__), E_USER_DEPRECATED);
 
@@ -51,7 +51,7 @@ public function transChoice($id, $number, array $parameters = array(), $domain =
             return strtr($this->selector->choose((string) $id, $number, $locale ?: $this->getLocale()), $parameters);
         }
 
-        return $this->trans($id, array('%count%' => $number) + $parameters, $domain, $locale);
+        return $this->trans($id, ['%count%' => $number] + $parameters, $domain, $locale);
     }
 
     private function getPluralizationRule(int $number, string $locale): int
diff --git a/src/Symfony/Component/Translation/Loader/XliffFileLoader.php b/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
index 1106ec65f0e2..99306b86b1fe 100644
--- a/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
+++ b/src/Symfony/Component/Translation/Loader/XliffFileLoader.php
@@ -97,13 +97,13 @@ private function extractXliff1(\DOMDocument $dom, MessageCatalogue $catalogue, s
 
             $catalogue->set((string) $source, $target, $domain);
 
-            $metadata = array();
+            $metadata = [];
             if ($notes = $this->parseNotesMetadata($translation->note, $encoding)) {
                 $metadata['notes'] = $notes;
             }
 
             if (isset($translation->target) && $translation->target->attributes()) {
-                $metadata['target-attributes'] = array();
+                $metadata['target-attributes'] = [];
                 foreach ($translation->target->attributes() as $key => $value) {
                     $metadata['target-attributes'][$key] = (string) $value;
                 }
@@ -134,18 +134,18 @@ private function extractXliff2(\DOMDocument $dom, MessageCatalogue $catalogue, s
 
                 $catalogue->set((string) $source, $target, $domain);
 
-                $metadata = array();
+                $metadata = [];
                 if (isset($segment->target) && $segment->target->attributes()) {
-                    $metadata['target-attributes'] = array();
+                    $metadata['target-attributes'] = [];
                     foreach ($segment->target->attributes() as $key => $value) {
                         $metadata['target-attributes'][$key] = (string) $value;
                     }
                 }
 
                 if (isset($unit->notes)) {
-                    $metadata['notes'] = array();
+                    $metadata['notes'] = [];
                     foreach ($unit->notes->note as $noteNode) {
-                        $note = array();
+                        $note = [];
                         foreach ($noteNode->attributes() as $key => $value) {
                             $note[$key] = (string) $value;
                         }
@@ -173,7 +173,7 @@ private function utf8ToCharset(string $content, string $encoding = null): string
 
     private function parseNotesMetadata(\SimpleXMLElement $noteElement = null, string $encoding = null): array
     {
-        $notes = array();
+        $notes = [];
 
         if (null === $noteElement) {
             return $notes;
@@ -182,7 +182,7 @@ private function parseNotesMetadata(\SimpleXMLElement $noteElement = null, strin
         /** @var \SimpleXMLElement $xmlNote */
         foreach ($noteElement as $xmlNote) {
             $noteAttributes = $xmlNote->attributes();
-            $note = array('content' => $this->utf8ToCharset((string) $xmlNote, $encoding));
+            $note = ['content' => $this->utf8ToCharset((string) $xmlNote, $encoding)];
             if (isset($noteAttributes['priority'])) {
                 $note['priority'] = (int) $noteAttributes['priority'];
             }
diff --git a/src/Symfony/Component/Translation/LoggingTranslator.php b/src/Symfony/Component/Translation/LoggingTranslator.php
index 4fe756d7a7fb..62314b309d58 100644
--- a/src/Symfony/Component/Translation/LoggingTranslator.php
+++ b/src/Symfony/Component/Translation/LoggingTranslator.php
@@ -49,7 +49,7 @@ public function __construct($translator, LoggerInterface $logger)
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         $trans = $this->translator->trans($id, $parameters, $domain, $locale);
         $this->log($id, $domain, $locale);
@@ -62,12 +62,12 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
      *
      * @deprecated since Symfony 4.2, use the trans() method instead with a %count% parameter
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%count%" parameter.', __METHOD__), E_USER_DEPRECATED);
 
         if ($this->translator instanceof TranslatorInterface) {
-            $trans = $this->translator->trans($id, array('%count%' => $number) + $parameters, $domain, $locale);
+            $trans = $this->translator->trans($id, ['%count%' => $number] + $parameters, $domain, $locale);
         } else {
             $trans = $this->translator->transChoice($id, $number, $parameters, $domain, $locale);
         }
@@ -112,7 +112,7 @@ public function getFallbackLocales()
             return $this->translator->getFallbackLocales();
         }
 
-        return array();
+        return [];
     }
 
     /**
@@ -143,9 +143,9 @@ private function log($id, $domain, $locale)
         }
 
         if ($catalogue->has($id, $domain)) {
-            $this->logger->debug('Translation use fallback catalogue.', array('id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()));
+            $this->logger->debug('Translation use fallback catalogue.', ['id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()]);
         } else {
-            $this->logger->warning('Translation not found.', array('id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()));
+            $this->logger->warning('Translation not found.', ['id' => $id, 'domain' => $domain, 'locale' => $catalogue->getLocale()]);
         }
     }
 }
diff --git a/src/Symfony/Component/Translation/MessageCatalogue.php b/src/Symfony/Component/Translation/MessageCatalogue.php
index 7a7657c0a432..19afb903f7a7 100644
--- a/src/Symfony/Component/Translation/MessageCatalogue.php
+++ b/src/Symfony/Component/Translation/MessageCatalogue.php
@@ -19,9 +19,9 @@
  */
 class MessageCatalogue implements MessageCatalogueInterface, MetadataAwareInterface
 {
-    private $messages = array();
-    private $metadata = array();
-    private $resources = array();
+    private $messages = [];
+    private $metadata = [];
+    private $resources = [];
     private $locale;
     private $fallbackCatalogue;
     private $parent;
@@ -30,7 +30,7 @@ class MessageCatalogue implements MessageCatalogueInterface, MetadataAwareInterf
      * @param string $locale   The locale
      * @param array  $messages An array of messages classified by domain
      */
-    public function __construct(?string $locale, array $messages = array())
+    public function __construct(?string $locale, array $messages = [])
     {
         $this->locale = $locale;
         $this->messages = $messages;
@@ -49,7 +49,7 @@ public function getLocale()
      */
     public function getDomains()
     {
-        $domains = array();
+        $domains = [];
         $suffixLength = \strlen(self::INTL_DOMAIN_SUFFIX);
 
         foreach ($this->messages as $domain => $messages) {
@@ -68,18 +68,18 @@ public function getDomains()
     public function all($domain = null)
     {
         if (null !== $domain) {
-            return ($this->messages[$domain.self::INTL_DOMAIN_SUFFIX] ?? array()) + ($this->messages[$domain] ?? array());
+            return ($this->messages[$domain.self::INTL_DOMAIN_SUFFIX] ?? []) + ($this->messages[$domain] ?? []);
         }
 
-        $allMessages = array();
+        $allMessages = [];
         $suffixLength = \strlen(self::INTL_DOMAIN_SUFFIX);
 
         foreach ($this->messages as $domain => $messages) {
             if (\strlen($domain) > $suffixLength && false !== $i = strpos($domain, self::INTL_DOMAIN_SUFFIX, -$suffixLength)) {
                 $domain = substr($domain, 0, $i);
-                $allMessages[$domain] = $messages + ($allMessages[$domain] ?? array());
+                $allMessages[$domain] = $messages + ($allMessages[$domain] ?? []);
             } else {
-                $allMessages[$domain] = ($allMessages[$domain] ?? array()) + $messages;
+                $allMessages[$domain] = ($allMessages[$domain] ?? []) + $messages;
             }
         }
 
@@ -91,7 +91,7 @@ public function all($domain = null)
      */
     public function set($id, $translation, $domain = 'messages')
     {
-        $this->add(array($id => $translation), $domain);
+        $this->add([$id => $translation], $domain);
     }
 
     /**
@@ -277,7 +277,7 @@ public function setMetadata($key, $value, $domain = 'messages')
     public function deleteMetadata($key = '', $domain = 'messages')
     {
         if ('' == $domain) {
-            $this->metadata = array();
+            $this->metadata = [];
         } elseif ('' == $key) {
             unset($this->metadata[$domain]);
         } else {
diff --git a/src/Symfony/Component/Translation/Tests/Catalogue/MergeOperationTest.php b/src/Symfony/Component/Translation/Tests/Catalogue/MergeOperationTest.php
index d46e801933ad..22af86e9063a 100644
--- a/src/Symfony/Component/Translation/Tests/Catalogue/MergeOperationTest.php
+++ b/src/Symfony/Component/Translation/Tests/Catalogue/MergeOperationTest.php
@@ -56,13 +56,13 @@ public function testGetResultFromSingleDomain()
     public function testGetResultFromIntlDomain()
     {
         $this->assertEquals(
-            new MessageCatalogue('en', array(
-                'messages' => array('a' => 'old_a', 'b' => 'old_b'),
-                'messages+intl-icu' => array('d' => 'old_d', 'c' => 'new_c'),
-            )),
+            new MessageCatalogue('en', [
+                'messages' => ['a' => 'old_a', 'b' => 'old_b'],
+                'messages+intl-icu' => ['d' => 'old_d', 'c' => 'new_c'],
+            ]),
             $this->createOperation(
-                new MessageCatalogue('en', array('messages' => array('a' => 'old_a', 'b' => 'old_b'), 'messages+intl-icu' => array('d' => 'old_d'))),
-                new MessageCatalogue('en', array('messages+intl-icu' => array('a' => 'new_a', 'c' => 'new_c')))
+                new MessageCatalogue('en', ['messages' => ['a' => 'old_a', 'b' => 'old_b'], 'messages+intl-icu' => ['d' => 'old_d']]),
+                new MessageCatalogue('en', ['messages+intl-icu' => ['a' => 'new_a', 'c' => 'new_c']])
             )->getResult()
         );
     }
diff --git a/src/Symfony/Component/Translation/Tests/Catalogue/TargetOperationTest.php b/src/Symfony/Component/Translation/Tests/Catalogue/TargetOperationTest.php
index 70999f4c3265..570b503aeaba 100644
--- a/src/Symfony/Component/Translation/Tests/Catalogue/TargetOperationTest.php
+++ b/src/Symfony/Component/Translation/Tests/Catalogue/TargetOperationTest.php
@@ -56,13 +56,13 @@ public function testGetResultFromSingleDomain()
     public function testGetResultFromIntlDomain()
     {
         $this->assertEquals(
-            new MessageCatalogue('en', array(
-                'messages' => array('a' => 'old_a'),
-                'messages+intl-icu' => array('c' => 'new_c'),
-            )),
+            new MessageCatalogue('en', [
+                'messages' => ['a' => 'old_a'],
+                'messages+intl-icu' => ['c' => 'new_c'],
+            ]),
             $this->createOperation(
-                new MessageCatalogue('en', array('messages' => array('a' => 'old_a'), 'messages+intl-icu' => array('b' => 'old_b'))),
-                new MessageCatalogue('en', array('messages' => array('a' => 'new_a'), 'messages+intl-icu' => array('c' => 'new_c')))
+                new MessageCatalogue('en', ['messages' => ['a' => 'old_a'], 'messages+intl-icu' => ['b' => 'old_b']]),
+                new MessageCatalogue('en', ['messages' => ['a' => 'new_a'], 'messages+intl-icu' => ['c' => 'new_c']])
             )->getResult()
         );
     }
diff --git a/src/Symfony/Component/Translation/Tests/Command/XliffLintCommandTest.php b/src/Symfony/Component/Translation/Tests/Command/XliffLintCommandTest.php
index 04272d4b797f..516d98af53db 100644
--- a/src/Symfony/Component/Translation/Tests/Command/XliffLintCommandTest.php
+++ b/src/Symfony/Component/Translation/Tests/Command/XliffLintCommandTest.php
@@ -47,8 +47,8 @@ public function testLintCorrectFiles()
         $filename2 = $this->createFile();
 
         $tester->execute(
-            array('filename' => array($filename1, $filename2)),
-            array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false)
+            ['filename' => [$filename1, $filename2]],
+            ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]
         );
 
         $this->assertEquals(0, $tester->getStatusCode(), 'Returns 0 in case of success');
@@ -64,8 +64,8 @@ public function testStrictFilenames($requireStrictFileNames, $fileNamePattern, $
         $filename = $this->createFile('note', $targetLanguage, $fileNamePattern);
 
         $tester->execute(
-            array('filename' => $filename),
-            array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false)
+            ['filename' => $filename],
+            ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]
         );
 
         $this->assertEquals($mustFail ? 1 : 0, $tester->getStatusCode());
@@ -195,13 +195,13 @@ protected function tearDown()
 
     public function provideStrictFilenames()
     {
-        yield array(false, 'messages.%locale%.xlf', 'en', false);
-        yield array(false, 'messages.%locale%.xlf', 'es', true);
-        yield array(false, '%locale%.messages.xlf', 'en', false);
-        yield array(false, '%locale%.messages.xlf', 'es', true);
-        yield array(true, 'messages.%locale%.xlf', 'en', false);
-        yield array(true, 'messages.%locale%.xlf', 'es', true);
-        yield array(true, '%locale%.messages.xlf', 'en', true);
-        yield array(true, '%locale%.messages.xlf', 'es', true);
+        yield [false, 'messages.%locale%.xlf', 'en', false];
+        yield [false, 'messages.%locale%.xlf', 'es', true];
+        yield [false, '%locale%.messages.xlf', 'en', false];
+        yield [false, '%locale%.messages.xlf', 'es', true];
+        yield [true, 'messages.%locale%.xlf', 'en', false];
+        yield [true, 'messages.%locale%.xlf', 'es', true];
+        yield [true, '%locale%.messages.xlf', 'en', true];
+        yield [true, '%locale%.messages.xlf', 'es', true];
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php b/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php
index 19e056c12e9d..138172e21d64 100644
--- a/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php
+++ b/src/Symfony/Component/Translation/Tests/DataC
17AE
ollectorTranslatorTest.php
@@ -21,60 +21,60 @@ class DataCollectorTranslatorTest extends TestCase
     public function testCollectMessages()
     {
         $collector = $this->createCollector();
-        $collector->setFallbackLocales(array('fr', 'ru'));
+        $collector->setFallbackLocales(['fr', 'ru']);
 
         $collector->trans('foo');
         $collector->trans('bar');
-        $collector->trans('choice', array('%count%' => 0));
+        $collector->trans('choice', ['%count%' => 0]);
         $collector->trans('bar_ru');
-        $collector->trans('bar_ru', array('foo' => 'bar'));
+        $collector->trans('bar_ru', ['foo' => 'bar']);
 
-        $expectedMessages = array();
-        $expectedMessages[] = array(
+        $expectedMessages = [];
+        $expectedMessages[] = [
             'id' => 'foo',
             'translation' => 'foo (en)',
             'locale' => 'en',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_DEFINED,
-            'parameters' => array(),
+            'parameters' => [],
             'transChoiceNumber' => null,
-        );
-        $expectedMessages[] = array(
+        ];
+        $expectedMessages[] = [
             'id' => 'bar',
             'translation' => 'bar (fr)',
             'locale' => 'fr',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK,
-            'parameters' => array(),
+            'parameters' => [],
             'transChoiceNumber' => null,
-        );
-        $expectedMessages[] = array(
+        ];
+        $expectedMessages[] = [
             'id' => 'choice',
             'translation' => 'choice',
             'locale' => 'en',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_MISSING,
-            'parameters' => array('%count%' => 0),
+            'parameters' => ['%count%' => 0],
             'transChoiceNumber' => 0,
-        );
-        $expectedMessages[] = array(
+        ];
+        $expectedMessages[] = [
             'id' => 'bar_ru',
             'translation' => 'bar (ru)',
             'locale' => 'ru',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK,
-            'parameters' => array(),
+            'parameters' => [],
             'transChoiceNumber' => null,
-        );
-        $expectedMessages[] = array(
+        ];
+        $expectedMessages[] = [
             'id' => 'bar_ru',
             'translation' => 'bar (ru)',
             'locale' => 'ru',
             'domain' => 'messages',
             'state' => DataCollectorTranslator::MESSAGE_EQUALS_FALLBACK,
-            'parameters' => array('foo' => 'bar'),
+            'parameters' => ['foo' => 'bar'],
             'transChoiceNumber' => null,
-        );
+        ];
 
         $this->assertEquals($expectedMessages, $collector->getCollectedMessages());
     }
@@ -85,20 +85,20 @@ public function testCollectMessages()
     public function testCollectMessagesTransChoice()
     {
         $collector = $this->createCollector();
-        $collector->setFallbackLocales(array('fr', 'ru'));
+        $collector->setFallbackLocales(['fr', 'ru']);
         $collector->transChoice('choice', 0);
 
-        $expectedMessages = array();
+        $expectedMessages = [];
 
-        $expectedMessages[] = array(
+        $expectedMessages[] = [
               'id' => 'choice',
               'translation' => 'choice',
               'locale' => 'en',
               'domain' => 'messages',
               'state' => DataCollectorTranslator::MESSAGE_MISSING,
-              'parameters' => array('%count%' => 0),
+              'parameters' => ['%count%' => 0],
               'transChoiceNumber' => 0,
-        );
+        ];
 
         $this->assertEquals($expectedMessages, $collector->getCollectedMessages());
     }
@@ -107,9 +107,9 @@ private function createCollector()
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (en)'), 'en');
-        $translator->addResource('array', array('bar' => 'bar (fr)'), 'fr');
-        $translator->addResource('array', array('bar_ru' => 'bar (ru)'), 'ru');
+        $translator->addResource('array', ['foo' => 'foo (en)'], 'en');
+        $translator->addResource('array', ['bar' => 'bar (fr)'], 'fr');
+        $translator->addResource('array', ['bar_ru' => 'bar (ru)'], 'ru');
 
         return new DataCollectorTranslator($translator);
     }
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
index 2691a7877e0f..20fa918bd69e 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/FileDumperTest.php
@@ -37,13 +37,13 @@ public function testDumpIntl()
         $tempDir = sys_get_temp_dir();
 
         $catalogue = new MessageCatalogue('en');
-        $catalogue->add(array('foo' => 'bar'), 'd1');
-        $catalogue->add(array('bar' => 'foo'), 'd1+intl-icu');
-        $catalogue->add(array('bar' => 'foo'), 'd2+intl-icu');
+        $catalogue->add(['foo' => 'bar'], 'd1');
+        $catalogue->add(['bar' => 'foo'], 'd1+intl-icu');
+        $catalogue->add(['bar' => 'foo'], 'd2+intl-icu');
 
         $dumper = new ConcreteFileDumper();
         @unlink($tempDir.'/d2.en.concrete');
-        $dumper->dump($catalogue, array('path' => $tempDir));
+        $dumper->dump($catalogue, ['path' => $tempDir]);
 
         $this->assertStringEqualsFile($tempDir.'/d1.en.concrete', 'foo=bar');
         @unlink($tempDir.'/d1.en.concrete');
diff --git a/src/Symfony/Component/Translation/Tests/Formatter/IntlFormatterTest.php b/src/Symfony/Component/Translation/Tests/Formatter/IntlFormatterTest.php
index 89eaa18f32b4..45ce6d4f6ef6 100644
--- a/src/Symfony/Component/Translation/Tests/Formatter/IntlFormatterTest.php
+++ b/s
F41A
rc/Symfony/Component/Translation/Tests/Formatter/IntlFormatterTest.php
@@ -31,7 +31,7 @@ public function testFormat($expected, $message, $arguments)
     public function testInvalidFormat()
     {
         $this->expectException(InvalidArgumentException::class);
-        (new IntlFormatter())->formatIntl('{foo', 'en', array(2));
+        (new IntlFormatter())->formatIntl('{foo', 'en', [2]);
     }
 
     public function testFormatWithNamedArguments()
@@ -59,38 +59,38 @@ public function testFormatWithNamedArguments()
      other {{host} invites {guest} as one of the # people invited to their party.}}}}
 _MSG_;
 
-        $message = (new IntlFormatter())->formatIntl($chooseMessage, 'en', array(
+        $message = (new IntlFormatter())->formatIntl($chooseMessage, 'en', [
             'gender_of_host' => 'male',
             'num_guests' => 10,
             'host' => 'Fabien',
             'guest' => 'Guilherme',
-        ));
+        ]);
 
         $this->assertEquals('Fabien invites Guilherme as one of the 9 people invited to his party.', $message);
     }
 
     public function provideDataForFormat()
     {
-        return array(
-            array(
+        return [
+            [
                 'There is one apple',
                 'There is one apple',
-                array(),
-            ),
-            array(
+                [],
+            ],
+            [
                 '4,560 monkeys on 123 trees make 37.073 monkeys per tree',
                 '{0,number,integer} monkeys on {1,number,integer} trees make {2,number} monkeys per tree',
-                array(4560, 123, 4560 / 123),
-            ),
-        );
+                [4560, 123, 4560 / 123],
+            ],
+        ];
     }
 
     public function testPercentsAndBracketsAreTrimmed()
     {
         $formatter = new IntlFormatter();
         $this->assertInstanceof(IntlFormatterInterface::class, $formatter);
-        $this->assertSame('Hello Fab', $formatter->formatIntl('Hello {name}', 'en', array('name' => 'Fab')));
-        $this->assertSame('Hello Fab', $formatter->formatIntl('Hello {name}', 'en', array('%name%' => 'Fab')));
-        $this->assertSame('Hello Fab', $formatter->formatIntl('Hello {name}', 'en', array('{{ name }}' => 'Fab')));
+        $this->assertSame('Hello Fab', $formatter->formatIntl('Hello {name}', 'en', ['name' => 'Fab']));
+        $this->assertSame('Hello Fab', $formatter->formatIntl('Hello {name}', 'en', ['%name%' => 'Fab']));
+        $this->assertSame('Hello Fab', $formatter->formatIntl('Hello {name}', 'en', ['{{ name }}' => 'Fab']));
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/LoggingTranslatorTest.php b/src/Symfony/Component/Translation/Tests/LoggingTranslatorTest.php
index 0e43cbecf419..450e060aabbf 100644
--- a/src/Symfony/Component/Translation/Tests/LoggingTranslatorTest.php
+++ b/src/Symfony/Component/Translation/Tests/LoggingTranslatorTest.php
@@ -43,11 +43,11 @@ public function testTransChoiceFallbackIsLogged()
         ;
 
         $translator = new Translator('ar');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('some_message2' => 'one thing|%count% things'), 'en');
+        $translator->addResource('array', ['some_message2' => 'one thing|%count% things'], 'en');
         $loggableTranslator = new LoggingTranslator($translator, $logger);
-        $loggableTranslator->transChoice('some_message2', 10, array('%count%' => 10));
+        $loggableTranslator->transChoice('some_message2', 10, ['%count%' => 10]);
     }
 
     /**
@@ -63,6 +63,6 @@ public function testTransChoiceWithNoTranslationIsLogged()
 
         $translator = new Translator('ar');
         $loggableTranslator = new LoggingTranslator($translator, $logger);
-        $loggableTranslator->transChoice('some_message2', 10, array('%count%' => 10));
+        $loggableTranslator->transChoice('some_message2', 10, ['%count%' => 10]);
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/MessageCatalogueTest.php b/src/Symfony/Component/Translation/Tests/MessageCatalogueTest.php
index 3339f3db207e..6fe9368f5c16 100644
--- a/src/Symfony/Component/Translation/Tests/MessageCatalogueTest.php
+++ b/src/Symfony/Component/Translation/Tests/MessageCatalogueTest.php
@@ -25,40 +25,40 @@ public function testGetLocale()
 
     public function testGetDomains()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array(), 'domain2' => array(), 'domain2+intl-icu' => array(), 'domain3+intl-icu' => array()));
+        $catalogue = new MessageCatalogue('en', ['domain1' => [], 'domain2' => [], 'domain2+intl-icu' => [], 'domain3+intl-icu' => []]);
 
-        $this->assertEquals(array('domain1', 'domain2', 'domain3'), $catalogue->getDomains());
+        $this->assertEquals(['domain1', 'domain2', 'domain3'], $catalogue->getDomains());
     }
 
     public function testAll()
     {
-        $catalogue = new MessageCatalogue('en', $messages = array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
+        $catalogue = new MessageCatalogue('en', $messages = ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
 
-        $this->assertEquals(array('foo' => 'foo'), $catalogue->all('domain1'));
-        $this->assertEquals(array(), $catalogue->all('domain88'));
+        $this->assertEquals(['foo' => 'foo'], $catalogue->all('domain1'));
+        $this->assertEquals([], $catalogue->all('domain88'));
         $this->assertEquals($messages, $catalogue->all());
 
-        $messages = array('domain1+intl-icu' => array('foo' => 'bar')) + $messages + array(
-            'domain2+intl-icu' => array('bar' => 'foo'),
-            'domain3+intl-icu' => array('biz' => 'biz'),
-        );
+        $messages = ['domain1+intl-icu' => ['foo' => 'bar']] + $messages + [
+            'domain2+intl-icu' => ['bar' => 'foo'],
+            'domain3+intl-icu' => ['biz' => 'biz'],
+        ];
         $catalogue = new MessageCatalogue('en', $messages);
 
-        $this->assertEquals(array('foo' => 'bar'), $catalogue->all('domain1'));
-        $this->assertEquals(array('bar' => 'foo'), $catalogue->all('domain2'));
-        $this->assertEquals(array('biz' => 'biz'), $catalogue->all('domain3'));
+        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
+        $this->assertEquals(['bar' => 'foo'], $catalogue->all('domain2'));
+        $this->assertEquals(['biz' => 'biz'], $catalogue->all('domain3'));
 
-        $messages = array(
-            'domain1' => array('foo' => 'bar'),
-            'domain2' => array('bar' => 'foo'),
-            'domain3' => array('biz' => 'biz'),
-        );
+        $messages = [
+            'domain1' => ['foo' => 'bar'],
+            'domain2' => ['bar' => 'foo'],
+            'domain3' => ['biz' => 'biz'],
+        ];
         $this->assertEquals($messages, $catalogue->all());
     }
 
     public function testHas()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain2+intl-icu' => array('bar' => 'bar')));
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain2+intl-icu' => ['bar' => 'bar']]);
 
         $this->assertTrue($catalogue->has('foo', 'domain1'));
         $this->assertTrue($catalogue->has('bar', 'domain2'));
@@ -68,7 +68,7 @@ public function testHas()
 
     public function testGetSet()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar'), 'domain2+intl-icu' => array('bar' => 'foo')));
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar'], 'domain2+intl-icu' => ['bar' => 'foo']]);
         $catalogue->set('foo1', 'foo1', 'domain1');
 
         $this->assertEquals('foo', $catalogue->get('foo', 'domain1'));
@@ -78,24 +78,24 @@ public function testGetSet()
 
     public function testAdd()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
-        $catalogue->add(array('foo1' => 'foo1'), 'domain1');
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
+        $catalogue->add(['foo1' => 'foo1'], 'domain1');
 
         $this->assertEquals('foo', $catalogue->get('foo', 'domain1'));
         $this->assertEquals('foo1', $catalogue->get('foo1', 'domain1'));
 
-        $catalogue->add(array('foo' => 'bar'), 'domain1');
+        $catalogue->add(['foo' => 'bar'], 'domain1');
         $this->assertEquals('bar', $catalogue->get('foo', 'domain1'));
         $this->assertEquals('foo1', $catalogue->get('foo1', 'domain1'));
 
-        $catalogue->add(array('foo' => 'bar'), 'domain88');
+        $catalogue->add(['foo' => 'bar'], 'domain88');
         $this->assertEquals('bar', $catalogue->get('foo', 'domain88'));
     }
 
     public function testReplace()
     {
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo'), 'domain1+intl-icu' => array('bar' => 'bar')));
-        $catalogue->replace($messages = array('foo1' => 'foo1'), 'domain1');
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo'], 'domain1+intl-icu' => ['bar' => 'bar']]);
+        $catalogue->replace($messages = ['foo1' => 'foo1'], 'domain1');
 
         $this->assertEquals($messages, $catalogue->all('domain1'));
     }
@@ -108,10 +108,10 @@ public function testAddCatalogue()
         $r1 = $this->getMockBuilder('Symfony\Component\Config\Resource\ResourceInterface')->getMock();
         $r1->expects($this->any())->method('__toString')->will($this->returnValue('r1'));
 
-        $catalogue = new MessageCatalogue('en', array('domain1' => array('foo' => 'foo')));
+        $catalogue = new MessageCatalogue('en', ['domain1' => ['foo' => 'foo']]);
         $catalogue->addResource($r);
 
-        $catalogue1 = new MessageCatalogue('en', array('domain1' => array('foo1' => 'foo1'), 'domain2+intl-icu' => array('bar' => 'bar')));
+        $catalogue1 = new MessageCatalogue('en', ['domain1' => ['foo1' => 'foo1'], 'domain2+intl-icu' => ['bar' => 'bar']]);
         $catalogue1->addResource($r1);
 
         $catalogue->addCatalogue($catalogue1);
@@ -121,7 +121,7 @@ public function testAddCatalogue()
         $this->assertEquals('bar', $catalogue->get('bar', 'domain2'));
         $this->assertEquals('bar', $catalogue->get('bar', 'domain2+intl-icu'));
 
-        $this->assertEquals(array($r, $r1), $catalogue->getResources());
+        $this->assertEquals([$r, $r1], $catalogue->getResources());
     }
 
     public function testAddFallbackCatalogue()
@@ -135,10 +135,10 @@ public function testAddFallbackCatalogue()
         $r2 = $this->getMockBuilder('Symfony\Component\Config\Resource\ResourceInterface')->getMock();
         $r2->expects($this->any())->method('__toString')->will($this->returnValue('r2'));
 
-        $catalogue = new MessageCatalogue('fr_FR', array('domain1' => array('foo' => 'foo'), 'domain2' => array('bar' => 'bar')));
+        $catalogue = new MessageCatalogue('fr_FR', ['domain1' => ['foo' => 'foo'], 'domain2' => ['bar' => 'bar']]);
         $catalogue->addResource($r);
 
-        $catalogue1 = new MessageCatalogue('fr', array('domain1' => array('foo' => 'bar', 'foo1' => 'foo1')));
+        $catalogue1 = new MessageCatalogue('fr', ['domain1' => ['foo' => 'bar', 'foo1' => 'foo1']]);
         $catalogue1->addResource($r1);
 
         $catalogue2 = new MessageCatalogue('en');
@@ -150,7 +150,7 @@ public function testAddFallbackCatalogue()
         $this->assertEquals('foo', $catalogue->get('foo', 'domain1'));
         $this->assertEquals('foo1', $catalogue->get('foo1', 'domain1'));
 
-        $this->assertEquals(array($r, $r1, $r2), $catalogue->getResources());
+        $this->assertEquals([$r, $r1, $r2], $catalogue->getResources());
     }
 
     /**
@@ -185,7 +185,7 @@ public function testAddFallbackCatalogueWithFallbackCircularReference()
     public function testAddCatalogueWhenLocaleIsNotTheSameAsTheCurrentOne()
     {
         $catalogue = new MessageCatalogue('en');
-        $catalogue->addCatalogue(new MessageCatalogue('fr', array()));
+        $catalogue->addCatalogue(new MessageCatalogue('fr', []));
     }
 
     public function testGetAddResource()
@@ -199,13 +199,13 @@ public function testGetAddResource()
         $r1->expects($this->any())->method('__toString')->will($this->returnValue('r1'));
         $catalogue->addResource($r1);
 
-        $this->assertEquals(array($r, $r1), $catalogue->getResources());
+        $this->assertEquals([$r, $r1], $catalogue->getResources());
     }
 
     public function testMetadataDelete()
     {
         $catalogue = new MessageCatalogue('en');
-        $this->assertEquals(array(), $catalogue->getMetadata('', ''), 'Metadata is empty');
+        $this->assertEquals([], $catalogue->getMetadata('', ''), 'Metadata is empty');
         $catalogue->deleteMetadata('key', 'messages');
         $catalogue->deleteMetadata('', 'messages');
         $catalogue->deleteMetadata();
@@ -217,8 +217,8 @@ public function testMetadataSetGetDelete()
         $catalogue->setMetadata('key', 'value');
         $this->assertEquals('value', $catalogue->getMetadata('key', 'messages'), "Metadata 'key' = 'value'");
 
-        $catalogue->setMetadata('key2', array());
-        $this->assertEquals(array(), $catalogue->getMetadata('key2', 'messages'), 'Metadata key2 is array');
+        $catalogue->setMetadata('key2', []);
+        $this->assertEquals([], $catalogue->getMetadata('key2', 'messages'), 'Metadata key2 is array');
 
         $catalogue->deleteMetadata('key2', 'messages');
         $this->assertNull($catalogue->getMetadata('key2', 'messages'), 'Metadata key2 should is deleted.');
@@ -231,13 +231,13 @@ public function testMetadataMerge()
     {
         $cat1 = new MessageCatalogue('en');
         $cat1->setMetadata('a', 'b');
-        $this->assertEquals(array('messages' => array('a' => 'b')), $cat1->getMetadata('', ''), 'Cat1 contains messages metadata.');
+        $this->assertEquals(['messages' => ['a' => 'b']], $cat1->getMetadata('', ''), 'Cat1 contains messages metadata.');
 
         $cat2 = new MessageCatalogue('en');
         $cat2->setMetadata('b', 'c', 'domain');
-        $this->assertEquals(array('domain' => array('b' => 'c')), $cat2->getMetadata('', ''), 'Cat2 contains domain metadata.');
+        $this->assertEquals(['domain' => ['b' => 'c']], $cat2->getMetadata('', ''), 'Cat2 contains domain metadata.');
 
         $cat1->addCatalogue($cat2);
-        $this->assertEquals(array('messages' => array('a' => 'b'), 'domain' => array('b' => 'c')), $cat1->getMetadata('', ''), 'Cat1 contains merged metadata.');
+        $this->assertEquals(['messages' => ['a' => 'b'], 'domain' => ['b' => 'c']], $cat1->getMetadata('', ''), 'Cat1 contains merged metadata.');
     }
 }
diff --git a/src/Symfony/Component/Translation/Tests/TranslatorCacheTest.php b/src/Symfony/Component/Translation/Tests/TranslatorCacheTest.php
index 77c264b49161..58e1936ed343 100644
--- a/src/Symfony/Component/Translation/Tests/TranslatorCacheTest.php
+++ b/src/Symfony/Component/Translation/Tests/TranslatorCacheTest.php
@@ -65,18 +65,18 @@ public function testThatACacheIsUsed($debug)
         // Prime the cache
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, new ArrayLoader());
-        $translator->addResource($format, array($msgid => 'OK'), $locale);
-        $translator->addResource($format, array($msgid.'+intl' => 'OK'), $locale, 'messages+intl-icu');
+        $translator->addResource($format, [$msgid => 'OK'], $locale);
+        $translator->addResource($format, [$msgid.'+intl' => 'OK'], $locale, 'messages+intl-icu');
         $translator->trans($msgid);
-        $translator->trans($msgid.'+intl', array(), 'messages+intl-icu');
+        $translator->trans($msgid.'+intl', [], 'messages+intl-icu');
 
         // Try again and see we get a valid result whilst no loader can be used
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, $this->createFailingLoader());
-        $translator->addResource($format, array($msgid => 'OK'), $locale);
-        $translator->addResource($format, array($msgid.'+intl' => 'OK'), $locale, 'messages+intl-icu');
+        $translator->addResource($format, [$msgid => 'OK'], $locale);
+        $translator->addResource($format, [$msgid.'+intl' => 'OK'], $locale, 'messages+intl-icu');
         $this->assertEquals('OK', $translator->trans($msgid), '-> caching does not work in '.($debug ? 'debug' : 'production'));
-        $this->assertEquals('OK', $translator->trans($msgid.'+intl', array(), 'messages+intl-icu'));
+        $this->assertEquals('OK', $translator->trans($msgid.'+intl', [], 'messages+intl-icu'));
     }
 
     public function testCatalogueIsReloadedWhenResourcesAreNoLongerFresh()
@@ -96,7 +96,7 @@ public function testCatalogueIsReloadedWhenResourcesAreNoLongerFresh()
         $format = 'some_format';
         $msgid = 'test';
 
-        $catalogue = new MessageCatalogue($locale, array());
+        $catalogue = new MessageCatalogue($locale, []);
         $catalogue->addResource(new StaleResource()); // better use a helper class than a mock, because it gets serialized in the cache and re-loaded
 
         /** @var LoaderInterface|\PHPUnit_Framework_MockObject_MockObject $loader */
@@ -137,26 +137,26 @@ public function testDifferentTranslatorsForSameLocaleDoNotOverwriteEachOthersCac
         // Create a Translator and prime its cache
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, new ArrayLoader());
-        $translator->addResource($format, array($msgid => 'OK'), $locale);
+        $translator->addResource($format, [$msgid => 'OK'], $locale);
         $translator->trans($msgid);
 
         // Create another Translator with a different catalogue for the same locale
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, new ArrayLoader());
-        $translator->addResource($format, array($msgid => 'FAIL'), $locale);
+        $translator->addResource($format, [$msgid => 'FAIL'], $locale);
         $translator->trans($msgid);
 
         // Now the first translator must still have a usable cache.
         $translator = new Translator($locale, null, $this->tmpDir, $debug);
         $translator->addLoader($format, $this->createFailingLoader());
-        $translator->addResource($format, array($msgid => 'OK'), $locale);
+        $translator->addResource($format, [$msgid => 'OK'], $locale);
         $this->assertEquals('OK', $translator->trans($msgid), '-> the cache was overwritten by another translator instance in '.($debug ? 'debug' : 'production'));
     }
 
     public function testGeneratedCacheFilesAreOnlyBelongRequestedLocales()
     {
         $translator = new Translator('a', null, $this->tmpDir);
-        $translator->setFallbackLocales(array('b'));
+        $translator->setFallbackLocales(['b']);
         $translator->trans('bar');
 
         $cachedFiles = glob($this->tmpDir.'/*.php');
@@ -172,24 +172,24 @@ public function testDifferentCacheFilesAreUsedForDifferentSetsOfFallbackLocales(
          * loading a catalogue from the cache.
          */
         $translator = new Translator('a', null, $this->tmpDir);
-        $translator->setFallbackLocales(array('b'));
+        $translator->setFallbackLocales(['b']);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (a)'), 'a');
-        $translator->addResource('array', array('bar' => 'bar (b)'), 'b');
+        $translator->addResource('array', ['foo' => 'foo (a)'], 'a');
+        $translator->addResource('array', ['bar' => 'bar (b)'], 'b');
 
         $this->assertEquals('bar (b)', $translator->trans('bar'));
 
         // Remove fallback locale
-        $translator->setFallbackLocales(array());
+        $translator->setFallbackLocales([]);
         $this->assertEquals('bar', $translator->trans('bar'));
 
         // Use a fresh translator with no fallback locales, result should be the same
         $translator = new Translator('a', null, $this->tmpDir);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (a)'), 'a');
-        $translator->addResource('array', array('bar' => 'bar (b)'), 'b');
+        $translator->addResource('array', ['foo' => 'foo (a)'], 'a');
+        $translator->addResource('array', ['bar' => 'bar (b)'], 'b');
 
         $this->assertEquals('bar', $translator->trans('bar'));
     }
@@ -210,13 +210,13 @@ public function testPrimaryAndFallbackCataloguesContainTheSameMessagesRegardless
          * The catalogues contain distinct sets of messages.
          */
         $translator = new Translator('a', null, $this->tmpDir);
-        $translator->setFallbackLocales(array('b'));
+        $translator->setFallbackLocales(['b']);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (a)'), 'a');
-        $translator->addResource('array', array('foo' => 'foo (b)'), 'b');
-        $translator->addResource('array', array('bar' => 'bar (b)'), 'b');
-        $translator->addResource('array', array('baz' => 'baz (b)'), 'b', 'messages+intl-icu');
+        $translator->addResource('array', ['foo' => 'foo (a)'], 'a');
+        $translator->addResource('array', ['foo' => 'foo (b)'], 'b');
+        $translator->addResource('array', ['bar' => 'bar (b)'], 'b');
+        $translator->addResource('array', ['baz' => 'baz (b)'], 'b', 'messages+intl-icu');
 
         $catalogue = $translator->getCatalogue('a');
         $this->assertFalse($catalogue->defines('bar')); // Sure, the "a" catalogue does not contain that message.
@@ -229,13 +229,13 @@ public function testPrimaryAndFallbackCataloguesContainTheSameMessagesRegardless
          * Behind the scenes, the cache is used. But that should not matter, right?
          */
         $translator = new Translator('a', null, $this->tmpDir);
-        $translator->setFallbackLocales(array('b'));
+        $translator->setFallbackLocales(['b']);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (a)'), 'a');
-        $translator->addResource('array', array('foo' => 'foo (b)'), 'b');
-        $translator->addResource('array', array('bar' => 'bar (b)'), 'b');
-        $translator->addResource('array', array('baz' => 'baz (b)'), 'b', 'messages+intl-icu');
+        $translator->addResource('array', ['foo' => 'foo (a)'], 'a');
+        $translator->addResource('array', ['foo' => 'foo (b)'], 'b');
+        $translator->addResource('array', ['bar' => 'bar (b)'], 'b');
+        $translator->addResource('array', ['baz' => 'baz (b)'], 'b', 'messages+intl-icu');
 
         $catalogue = $translator->getCatalogue('a');
         $this->assertFalse($catalogue->defines('bar'));
@@ -253,7 +253,7 @@ public function testRefreshCacheWhenResourcesAreNoLongerFresh()
         $loader
             ->expects($this->exactly(2))
             ->method('load')
-            ->will($this->returnValue($this->getCatalogue('fr', array(), array($resource))));
+            ->will($this->returnValue($this->getCatalogue('fr', [], [$resource])));
 
         // prime the cache
         $translator = new Translator('fr', null, $this->tmpDir, true);
@@ -268,7 +268,7 @@ public function testRefreshCacheWhenResourcesAreNoLongerFresh()
         $translator->trans('foo');
     }
 
-    protected function getCatalogue($locale, $messages, $resources = array())
+    protected function getCatalogue($locale, $messages, $resources = [])
     {
         $catalogue = new MessageCatalogue($locale);
         foreach ($messages as $key => $translation) {
@@ -283,7 +283,7 @@ protected function getCatalogue($locale, $messages, $resources = array())
 
     public function runForDebugAndProduction()
     {
-        return array(array(true), array(false));
+        return [[true], [false]];
     }
 
     /**
diff --git a/src/Symfony/Component/Translation/Tests/TranslatorTest.php b/src/Symfony/Component/Translation/Tests/TranslatorTest.php
index bbc8ce2d21ac..51c4a0a048be 100644
--- a/src/Symfony/Component/Translation/Tests/TranslatorTest.php
+++ b/src/Symfony/Component/Translation/Tests/TranslatorTest.php
@@ -97,8 +97,8 @@ public function testGetCatalogueReturnsConsolidatedCatalogue()
         $translator = new Translator($locale);
         $translator->addLoader('loader-a', new ArrayLoader());
         $translator->addLoader('loader-b', new ArrayLoader());
-        $translator->addResource('loader-a', array('foo' => 'foofoo'), $locale, 'domain-a');
-        $translator->addResource('loader-b', array('bar' => 'foobar'), $locale, 'domain-b');
+        $translator->addResource('loader-a', ['foo' => 'foofoo'], $locale, 'domain-a');
+        $translator->addResource('loader-b', ['bar' => 'foobar'], $locale, 'domain-b');
 
         /*
          * Test that we get a single catalogue comprising messages
@@ -113,13 +113,13 @@ public function testSetFallbackLocales()
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
-        $translator->addResource('array', array('bar' => 'foobar'), 'fr');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
+        $translator->addResource('array', ['bar' => 'foobar'], 'fr');
 
         // force catalogue loading
         $translator->trans('bar');
 
-        $translator->setFallbackLocales(array('fr'));
+        $translator->setFallbackLocales(['fr']);
         $this->assertEquals('foobar', $translator->trans('bar'));
     }
 
@@ -127,13 +127,13 @@ public function testSetFallbackLocalesMultiple()
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (en)'), 'en');
-        $translator->addResource('array', array('bar' => 'bar (fr)'), 'fr');
+        $translator->addResource('array', ['foo' => 'foo (en)'], 'en');
+        $translator->addResource('array', ['bar' => 'bar (fr)'], 'fr');
 
         // force catalogue loading
         $translator->trans('bar');
 
-        $translator->setFallbackLocales(array('fr_FR', 'fr'));
+        $translator->setFallbackLocales(['fr_FR', 'fr']);
         $this->assertEquals('bar (fr)', $translator->trans('bar'));
     }
 
@@ -144,7 +144,7 @@ public function testSetFallbackLocalesMultiple()
     public function testSetFallbackInvalidLocales($locale)
     {
         $translator = new Translator('fr');
-        $translator->setFallbackLocales(array('fr', $locale));
+        $translator->setFallbackLocales(['fr', $locale]);
     }
 
     /**
@@ -153,7 +153,7 @@ public function testSetFallbackInvalidLocales($locale)
     public function testSetFallbackValidLocales($locale)
     {
         $translator = new Translator($locale);
-        $translator->setFallbackLocales(array('fr', $locale));
+        $translator->setFallbackLocales(['fr', $locale]);
         // no assertion. this method just asserts that no exception is thrown
         $this->addToAssertionCount(1);
     }
@@ -161,10 +161,10 @@ public function testSetFallbackValidLocales($locale)
     public function testTransWithFallbackLocale()
     {
         $translator = new Translator('fr_FR');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
 
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('bar' => 'foobar'), 'en');
+        $translator->addResource('array', ['bar' => 'foobar'], 'en');
 
         $this->assertEquals('foobar', $translator->trans('bar'));
     }
@@ -176,7 +176,7 @@ public function testTransWithFallbackLocale()
     public function testAddResourceInvalidLocales($locale)
     {
         $translator = new Translator('fr');
-        $translator->addResource('array', array('foo' => 'foofoo'), $locale);
+        $translator->addResource('array', ['foo' => 'foofoo'], $locale);
     }
 
     /**
@@ -185,7 +185,7 @@ public function testAddResourceInvalidLocales($locale)
     public function testAddResourceValidLocales($locale)
     {
         $translator = new Translator('fr');
-        $translator->addResource('array', array('foo' => 'foofoo'), $locale);
+        $translator->addResource('array', ['foo' => 'foofoo'], $locale);
         // no assertion. this method just asserts that no exception is thrown
         $this->addToAssertionCount(1);
     }
@@ -195,12 +195,12 @@ public function testAddResourceAfterTrans()
         $translator = new Translator('fr');
         $translator->addLoader('array', new ArrayLoader());
 
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
 
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
         $this->assertEquals('foofoo', $translator->trans('foo'));
 
-        $translator->addResource('array', array('bar' => 'foobar'), 'en');
+        $translator->addResource('array', ['bar' => 'foobar'], 'en');
         $this->assertEquals('foobar', $translator->trans('bar'));
     }
 
@@ -231,16 +231,16 @@ public function testTransWithFallbackLocaleFile($format, $loader)
         $translator->addResource($format, __DIR__.'/fixtures/non-existing', 'en_GB');
         $translator->addResource($format, __DIR__.'/fixtures/resources.'.$format, 'en', 'resources');
 
-        $this->assertEquals('bar', $translator->trans('foo', array(), 'resources'));
+        $this->assertEquals('bar', $translator->trans('foo', [], 'resources'));
     }
 
     public function testTransWithIcuFallbackLocale()
     {
         $translator = new Translator('en_GB');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en_GB');
-        $translator->addResource('array', array('bar' => 'foobar'), 'en_001');
-        $translator->addResource('array', array('baz' => 'foobaz'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en_GB');
+        $translator->addResource('array', ['bar' => 'foobar'], 'en_001');
+        $translator->addResource('array', ['baz' => 'foobaz'], 'en');
         $this->assertSame('foofoo', $translator->trans('foo'));
         $this->assertSame('foobar', $translator->trans('bar'));
         $this->assertSame('foobaz', $translator->trans('baz'));
@@ -250,10 +250,10 @@ public function testTransWithIcuVariantFallbackLocale()
     {
         $translator = new Translator('en_GB_scouse');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en_GB_scouse');
-        $translator->addResource('array', array('bar' => 'foobar'), 'en_GB');
-        $translator->addResource('array', array('baz' => 'foobaz'), 'en_001');
-        $translator->addResource('array', array('qux' => 'fooqux'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en_GB_scouse');
+        $translator->addResource('array', ['bar' => 'foobar'], 'en_GB');
+        $translator->addResource('array', ['baz' => 'foobaz'], 'en_001');
+        $translator->addResource('array', ['qux' => 'fooqux'], 'en');
         $this->assertSame('foofoo', $translator->trans('foo'));
         $this->assertSame('foobar', $translator->trans('bar'));
         $this->assertSame('foobaz', $translator->trans('baz'));
@@ -264,8 +264,8 @@ public function testTransWithIcuRootFallbackLocale()
     {
         $translator = new Translator('az_Cyrl');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'az_Cyrl');
-        $translator->addResource('array', array('bar' => 'foobar'), 'az');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'az_Cyrl');
+        $translator->addResource('array', ['bar' => 'foobar'], 'az');
         $this->assertSame('foofoo', $translator->trans('foo'));
         $this->assertSame('bar', $translator->trans('bar'));
     }
@@ -274,8 +274,8 @@ public function testTransWithFallbackLocaleBis()
     {
         $translator = new Translator('en_US');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en_US');
-        $translator->addResource('array', array('bar' => 'foobar'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en_US');
+        $translator->addResource('array', ['bar' => 'foobar'], 'en');
         $this->assertEquals('foobar', $translator->trans('bar'));
     }
 
@@ -283,10 +283,10 @@ public function testTransWithFallbackLocaleTer()
     {
         $translator = new Translator('fr_FR');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foo (en_US)'), 'en_US');
-        $translator->addResource('array', array('bar' => 'bar (en)'), 'en');
+        $translator->addResource('array', ['foo' => 'foo (en_US)'], 'en_US');
+        $translator->addResource('array', ['bar' => 'bar (en)'], 'en');
 
-        $translator->setFallbackLocales(array('en_US', 'en'));
+        $translator->setFallbackLocales(['en_US', 'en']);
 
         $this->assertEquals('foo (en_US)', $translator->trans('foo'));
         $this->assertEquals('bar (en)', $translator->trans('bar'));
@@ -295,7 +295,7 @@ public function testTransWithFallbackLocaleTer()
     public function testTransNonExistentWithFallback()
     {
         $translator = new Translator('fr');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
         $translator->addLoader('array', new ArrayLoader());
         $this->assertEquals('non-existent', $translator->trans('non-existent'));
     }
@@ -306,7 +306,7 @@ public function testTransNonExistentWithFallback()
     public function testWhenAResourceHasNoRegisteredLoader()
     {
         $translator = new Translator('en');
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
 
         $translator->trans('foo');
     }
@@ -314,7 +314,7 @@ public function testWhenAResourceHasNoRegisteredLoader()
     public function testNestedFallbackCatalogueWhenUsingMultipleLocales()
     {
         $translator = new Translator('fr');
-        $translator->setFallbackLocales(array('ru', 'en'));
+        $translator->setFallbackLocales(['ru', 'en']);
 
         $translator->getCatalogue('fr');
 
@@ -329,7 +329,7 @@ public function testFallbackCatalogueResources()
         $translator->addResource('yml', __DIR__.'/fixtures/resources.yml', 'en');
 
         // force catalogue loading
-        $this->assertEquals('bar', $translator->trans('foo', array()));
+        $this->assertEquals('bar', $translator->trans('foo', []));
 
         $resources = $translator->getCatalogue('en')->getResources();
         $this->assertCount(1, $resources);
@@ -348,7 +348,7 @@ public function testTrans($expected, $id, $translation, $parameters, $locale, $d
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array((string) $id => $translation), $locale, $domain);
+        $translator->addResource('array', [(string) $id => $translation], $locale, $domain);
 
         $this->assertEquals($expected, $translator->trans($id, $parameters, $domain, $locale));
     }
@@ -361,9 +361,9 @@ public function testTransInvalidLocale($locale)
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
 
-        $translator->trans('foo', array(), '', $locale);
+        $translator->trans('foo', [], '', $locale);
     }
 
     /**
@@ -373,10 +373,10 @@ public function testTransValidLocale($locale)
     {
         $translator = new Translator($locale);
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('test' => 'OK'), $locale);
+        $translator->addResource('array', ['test' => 'OK'], $locale);
 
         $this->assertEquals('OK', $translator->trans('test'));
-        $this->assertEquals('OK', $translator->trans('test', array(), null, $locale));
+        $this->assertEquals('OK', $translator->trans('test', [], null, $locale));
     }
 
     /**
@@ -388,7 +388,7 @@ public function testFlattenedTrans($expected, $messages, $id)
         $translator->addLoader('array', new ArrayLoader());
         $translator->addResource('array', $messages, 'fr', '');
 
-        $this->assertEquals($expected, $translator->trans($id, array(), '', 'fr'));
+        $this->assertEquals($expected, $translator->trans($id, [], '', 'fr'));
     }
 
     /**
@@ -399,7 +399,7 @@ public function testTransChoice($expected, $id, $translation, $number, $paramete
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array((string) $id => $translation), $locale, $domain);
+        $translator->addResource('array', [(string) $id => $translation], $locale, $domain);
 
         $this->assertEquals($expected, $translator->transChoice($id, $number, $parameters, $domain, $locale));
     }
@@ -413,9 +413,9 @@ public function testTransChoiceInvalidLocale($locale)
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
 
-        $translator->transChoice('foo', 1, array(), '', $locale);
+        $translator->transChoice('foo', 1, [], '', $locale);
     }
 
     /**
@@ -426,118 +426,118 @@ public function testTransChoiceValidLocale($locale)
     {
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('foo' => 'foofoo'), 'en');
+        $translator->addResource('array', ['foo' => 'foofoo'], 'en');
 
-        $translator->transChoice('foo', 1, array(), '', $locale);
+        $translator->transChoice('foo', 1, [], '', $locale);
         // no assertion. this method just asserts that no exception is thrown
         $this->addToAssertionCount(1);
     }
 
     public function getTransFileTests()
     {
-        return array(
-            array('csv', 'CsvFileLoader'),
-            array('ini', 'IniFileLoader'),
-            array('mo', 'MoFileLoader'),
-            array('po', 'PoFileLoader'),
-            array('php', 'PhpFileLoader'),
-            array('ts', 'QtFileLoader'),
-            array('xlf', 'XliffFileLoader'),
-            array('yml', 'YamlFileLoader'),
-            array('json', 'JsonFileLoader'),
-        );
+        return [
+            ['csv', 'CsvFileLoader'],
+            ['ini', 'IniFileLoader'],
+            ['mo', 'MoFileLoader'],
+            ['po', 'PoFileLoader'],
+            ['php', 'PhpFileLoader'],
+            ['ts', 'QtFileLoader'],
+            ['xlf', 'XliffFileLoader'],
+            ['yml', 'YamlFileLoader'],
+            ['json', 'JsonFileLoader'],
+        ];
     }
 
     public function getTransTests()
     {
-        return array(
-            array('Symfony est super !', 'Symfony is great!', 'Symfony est super !', array(), 'fr', ''),
-            array('Symfony est awesome !', 'Symfony is %what%!', 'Symfony est %what% !', array('%what%' => 'awesome'), 'fr', ''),
-            array('Symfony est super !', new StringClass('Symfony is great!'), 'Symfony est super !', array(), 'fr', ''),
-        );
+        return [
+            ['Symfony est super !', 'Symfony is great!', 'Symfony est super !', [], 'fr', ''],
+            ['Symfony est awesome !', 'Symfony is %what%!', 'Symfony est %what% !', ['%what%' => 'awesome'], 'fr', ''],
+            ['Symfony est super !', new StringClass('Symfony is great!'), 'Symfony est super !', [], 'fr', ''],
+        ];
     }
 
     public function getFlattenedTransTests()
     {
-        $messages = array(
-            'symfony' => array(
-                'is' => array(
+        $messages = [
+            'symfony' => [
+                'is' => [
                     'great' => 'Symfony est super!',
-                ),
-            ),
-            'foo' => array(
-                'bar' => array(
+                ],
+            ],
+            'foo' => [
+                'bar' => [
                     'baz' => 'Foo Bar Baz',
-                ),
+                ],
                 'baz' => 'Foo Baz',
-            ),
-        );
+            ],
+        ];
 
-        return array(
-            array('Symfony est super!', $messages, 'symfony.is.great'),
-            array('Foo Bar Baz', $messages, 'foo.bar.baz'),
-            array('Foo Baz', $messages, 'foo.baz'),
-        );
+        return [
+            ['Symfony est super!', $messages, 'symfony.is.great'],
+            ['Foo Bar Baz', $messages, 'foo.bar.baz'],
+            ['Foo Baz', $messages, 'foo.baz'],
+        ];
     }
 
     public function getTransChoiceTests()
     {
-        return array(
-            array('Il y a 0 pomme', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, array(), 'fr', ''),
-            array('Il y a 1 pomme', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 1, array(), 'fr', ''),
-            array('Il y a 10 pommes', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 10, array(), 'fr', ''),
+        return [
+            ['Il y a 0 pomme', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, [], 'fr', ''],
+            ['Il y a 1 pomme', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 1, [], 'fr', ''],
+            ['Il y a 10 pommes', '{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples', '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 10, [], 'fr', ''],
 
-            array('Il y a 0 pomme', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 0, array(), 'fr', ''),
-            array('Il y a 1 pomme', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 1, array(), 'fr', ''),
-            array('Il y a 10 pommes', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 10, array(), 'fr', ''),
+            ['Il y a 0 pomme', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 0, [], 'fr', ''],
+            ['Il y a 1 pomme', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 1, [], 'fr', ''],
+            ['Il y a 10 pommes', 'There is one apple|There is %count% apples', 'Il y a %count% pomme|Il y a %count% pommes', 10, [], 'fr', ''],
 
-            array('Il y a 0 pomme', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 0, array(), 'fr', ''),
-            array('Il y a 1 pomme', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 1, array(), 'fr', ''),
-            array('Il y a 10 pommes', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 10, array(), 'fr', ''),
+            ['Il y a 0 pomme', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 0, [], 'fr', ''],
+            ['Il y a 1 pomme', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 1, [], 'fr', ''],
+            ['Il y a 10 pommes', 'one: There is one apple|more: There is %count% apples', 'one: Il y a %count% pomme|more: Il y a %count% pommes', 10, [], 'fr', ''],
 
-            array('Il n\'y a aucune pomme', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 0, array(), 'fr', ''),
-            array('Il y a 1 pomme', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 1, array(), 'fr', ''),
-            array('Il y a 10 pommes', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 10, array(), 'fr', ''),
+            ['Il n\'y a aucune pomme', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 0, [], 'fr', ''],
+            ['Il y a 1 pomme', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 1, [], 'fr', ''],
+            ['Il y a 10 pommes', '{0} There are no apples|one: There is one apple|more: There is %count% apples', '{0} Il n\'y a aucune pomme|one: Il y a %count% pomme|more: Il y a %count% pommes', 10, [], 'fr', ''],
 
-            array('Il y a 0 pomme', new StringClass('{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples'), '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, array(), 'fr', ''),
+            ['Il y a 0 pomme', new StringClass('{0} There are no appless|{1} There is one apple|]1,Inf] There is %count% apples'), '[0,1] Il y a %count% pomme|]1,Inf] Il y a %count% pommes', 0, [], 'fr', ''],
 
             // Override %count% with a custom value
-            array('Il y a quelques pommes', 'one: There is one apple|more: There are %count% apples', 'one: Il y a %count% pomme|more: Il y a quelques pommes', 2, array('%count%' => 'quelques'), 'fr', ''),
-        );
+            ['Il y a quelques pommes', 'one: There is one apple|more: There are %count% apples', 'one: Il y a %count% pomme|more: Il y a quelques pommes', 2, ['%count%' => 'quelques'], 'fr', ''],
+        ];
     }
 
     public function getInvalidLocalesTests()
     {
-        return array(
-            array('fr FR'),
-            array('français'),
-            array('fr+en'),
-            array('utf#8'),
-            array('fr&en'),
-            array('fr~FR'),
-            array(' fr'),
-            array('fr '),
-            array('fr*'),
-            array('fr/FR'),
-            array('fr\\FR'),
-        );
+        return [
+            ['fr FR'],
+            ['français'],
+            ['fr+en'],
+            ['utf#8'],
+            ['fr&en'],
+            ['fr~FR'],
+            [' fr'],
+            ['fr '],
+            ['fr*'],
+            ['fr/FR'],
+            ['fr\\FR'],
+        ];
     }
 
     public function getValidLocalesTests()
     {
-        return array(
-            array(''),
-            array(null),
-            array('fr'),
-            array('francais'),
-            array('FR'),
-            array('frFR'),
-            array('fr-FR'),
-            array('fr_FR'),
-            array('fr.FR'),
-            array('fr-FR.UTF8'),
-            array('sr@latin'),
-        );
+        return [
+            [''],
+            [null],
+            ['fr'],
+            ['francais'],
+            ['FR'],
+            ['frFR'],
+            ['fr-FR'],
+            ['fr_FR'],
+            ['fr.FR'],
+            ['fr-FR.UTF8'],
+            ['sr@latin'],
+        ];
     }
 
     /**
@@ -548,11 +548,11 @@ public function testIntlFormattedDomain()
         $translator = new Translator('en');
         $translator->addLoader('array', new ArrayLoader());
 
-        $translator->addResource('array', array('some_message' => 'Hello %name%'), 'en');
-        $this->assertSame('Hello Bob', $translator->trans('some_message', array('%name%' => 'Bob')));
+        $translator->addResource('array', ['some_message' => 'Hello %name%'], 'en');
+        $this->assertSame('Hello Bob', $translator->trans('some_message', ['%name%' => 'Bob']));
 
-        $translator->addResource('array', array('some_message' => 'Hi {name}'), 'en', 'messages+intl-icu');
-        $this->assertSame('Hi Bob', $translator->trans('some_message', array('%name%' => 'Bob')));
+        $translator->addResource('array', ['some_message' => 'Hi {name}'], 'en', 'messages+intl-icu');
+        $this->assertSame('Hi Bob', $translator->trans('some_message', ['%name%' => 'Bob']));
     }
 
     /**
@@ -561,11 +561,11 @@ public function testIntlFormattedDomain()
     public function testTransChoiceFallback()
     {
         $translator = new Translator('ru');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('some_message2' => 'one thing|%count% things'), 'en');
+        $translator->addResource('array', ['some_message2' => 'one thing|%count% things'], 'en');
 
-        $this->assertEquals('10 things', $translator->transChoice('some_message2', 10, array('%count%' => 10)));
+        $this->assertEquals('10 things', $translator->transChoice('some_message2', 10, ['%count%' => 10]));
     }
 
     /**
@@ -574,11 +574,11 @@ public function testTransChoiceFallback()
     public function testTransChoiceFallbackBis()
     {
         $translator = new Translator('ru');
-        $translator->setFallbackLocales(array('en_US', 'en'));
+        $translator->setFallbackLocales(['en_US', 'en']);
         $translator->addLoader('array', new ArrayLoader());
-        $translator->addResource('array', array('some_message2' => 'one thing|%count% things'), 'en_US');
+        $translator->addResource('array', ['some_message2' => 'one thing|%count% things'], 'en_US');
 
-        $this->assertEquals('10 things', $translator->transChoice('some_message2', 10, array('%count%' => 10)));
+        $this->assertEquals('10 things', $translator->transChoice('some_message2', 10, ['%count%' => 10]));
     }
 
     /**
@@ -587,12 +587,12 @@ public function testTransChoiceFallbackBis()
     public function testTransChoiceFallbackWithNoTranslation()
     {
         $translator = new Translator('ru');
-        $translator->setFallbackLocales(array('en'));
+        $translator->setFallbackLocales(['en']);
         $translator->addLoader('array', new ArrayLoader());
 
         // consistent behavior with Translator::trans(), which returns the string
         // unchanged if it can't be found
-        $this->assertEquals('some_message2', $translator->transChoice('some_message2', 10, array('%count%' => 10)));
+        $this->assertEquals('some_message2', $translator->transChoice('some_message2', 10, ['%count%' => 10]));
     }
 }
 
diff --git a/src/Symfony/Component/Translation/Translator.php b/src/Symfony/Component/Translation/Translator.php
index 7fcb77853d5e..8a2b2dd9d0c6 100644
--- a/src/Symfony/Component/Translation/Translator.php
+++ b/src/Symfony/Component/Translation/Translator.php
@@ -34,7 +34,7 @@ class Translator implements LegacyTranslatorInterface, TranslatorInterface, Tran
     /**
      * @var MessageCatalogueInterface[]
      */
-    protected $catalogues = array();
+    protected $catalogues = [];
 
     /**
      * @var string
@@ -44,17 +44,17 @@ class Translator implements LegacyTranslatorInterface, TranslatorInterface, Tran
     /**
      * @var array
      */
-    private $fallbackLocales = array();
+    private $fallbackLocales = [];
 
     /**
      * @var LoaderInterface[]
      */
-    private $loaders = array();
+    private $loaders = [];
 
     /**
      * @var array
      */
-    private $resources = array();
+    private $resources = [];
 
     /**
      * @var MessageFormatterInterface
@@ -134,10 +134,10 @@ public function addResource($format, $resource, $locale, $domain = null)
 
         $this->assertValidLocale($locale);
 
-        $this->resources[$locale][] = array($format, $resource, $domain);
+        $this->resources[$locale][] = [$format, $resource, $domain];
 
         if (\in_array($locale, $this->fallbackLocales)) {
-            $this->catalogues = array();
+            $this->catalogues = [];
         } else {
             unset($this->catalogues[$locale]);
         }
@@ -170,7 +170,7 @@ public function getLocale()
     public function setFallbackLocales(array $locales)
     {
         // needed as the fallback locales are linked to the already loaded catalogues
-        $this->catalogues = array();
+        $this->catalogues = [];
 
         foreach ($locales as $locale) {
             $this->assertValidLocale($locale);
@@ -194,7 +194,7 @@ public function getFallbackLocales()
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         if (null === $domain) {
             $domain = 'messages';
@@ -224,7 +224,7 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
      *
      * @deprecated since Symfony 4.2, use the trans() method instead with a %count% parameter
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
         @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%%count%%" parameter.', __METHOD__), E_USER_DEPRECATED);
 
@@ -249,7 +249,7 @@ public function transChoice($id, $number, array $parameters = array(), $domain =
         }
 
         if ($this->hasIntlFormatter && $catalogue->defines($id, $domain.MessageCatalogue::INTL_DOMAIN_SUFFIX)) {
-            return $this->formatter->formatIntl($catalogue->get($id, $domain), $locale, array('%count%' => $number) + $parameters);
+            return $this->formatter->formatIntl($catalogue->get($id, $domain), $locale, ['%count%' => $number] + $parameters);
         }
 
         return $this->formatter->choiceFormat($catalogue->get($id, $domain), $number, $locale, $parameters);
@@ -433,7 +433,7 @@ protected function computeFallbackLocales($locale)
             $parentLocales = \json_decode(\file_get_contents(__DIR__.'/Resources/data/parents.json'), true);
         }
 
-        $locales = array();
+        $locales = [];
         foreach ($this->fallbackLocales as $fallback) {
             if ($fallback === $locale) {
                 continue;
@@ -490,7 +490,7 @@ private function getConfigCacheFactory(): ConfigCacheFactoryInterface
 
     private function getAllMessages(MessageCatalogueInterface $catalogue): array
     {
-        $allMessages = array();
+        $allMessages = [];
 
         foreach ($catalogue->all() as $domain => $messages) {
             if ($intlMessages = $catalogue->all($domain.MessageCatalogue::INTL_DOMAIN_SUFFIX)) {
diff --git a/src/Symfony/Component/Translation/Util/XliffUtils.php b/src/Symfony/Component/Translation/Util/XliffUtils.php
index 9f024e5985d9..3ace285bfac5 100644
--- a/src/Symfony/Component/Translation/Util/XliffUtils.php
+++ b/src/Symfony/Component/Translation/Util/XliffUtils.php
@@ -77,7 +77,7 @@ public static function validateSchema(\DOMDocument $dom): array
         libxml_clear_errors();
         libxml_use_internal_errors($internalErrors);
 
-        return array();
+        return [];
     }
 
     public static function getErrorsAsString(array $xmlErrors): string
@@ -143,16 +143,16 @@ private static function fixXmlLocation(string $schemaSource, string $xmlUri): st
      */
     private static function getXmlErrors(bool $internalErrors): array
     {
-        $errors = array();
+        $errors = [];
         foreach (libxml_get_errors() as $error) {
-            $errors[] = array(
+            $errors[] = [
                 'level' => LIBXML_ERR_WARNING == $error->level ? 'WARNING' : 'ERROR',
                 'code' => $error->code,
                 'message' => trim($error->message),
                 'file' => $error->file ?: 'n/a',
                 'line' => $error->line,
                 'column' => $error->column,
-            );
+            ];
         }
 
         libxml_clear_errors();
diff --git a/src/Symfony/Component/Validator/Constraints/DivisibleBy.php b/src/Symfony/Component/Validator/Constraints/DivisibleBy.php
index c438f273c043..e806a77b554a 100644
--- a/src/Symfony/Component/Validator/Constraints/DivisibleBy.php
+++ b/src/Symfony/Component/Validator/Constraints/DivisibleBy.php
@@ -21,9 +21,9 @@ class DivisibleBy extends AbstractComparison
 {
     const NOT_DIVISIBLE_BY = '6d99d6c3-1464-4ccf-bdc7-14d083cf455c';
 
-    protected static $errorNames = array(
+    protected static $errorNames = [
         self::NOT_DIVISIBLE_BY => 'NOT_DIVISIBLE_BY',
-    );
+    ];
 
     public $message = 'This value should be a multiple of {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php b/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
index 4539e27bd3ad..dcc02ca69458 100644
--- a/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
+++ b/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
@@ -40,16 +40,16 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $initializers = array();
+        $initializers = [];
         foreach ($container->findTaggedServiceIds($this->initializerTag, true) as $id => $attributes) {
             $initializers[] = new Reference($id);
         }
 
-        $container->getDefinition($this->builderService)->addMethodCall('addObjectInitializers', array($initializers));
+        $container->getDefinition($this->builderService)->addMethodCall('addObjectInitializers', [$initializers]);
 
         // @deprecated logic, to be removed in Symfony 5.0
         $builder = $container->getDefinition($this->builderService);
-        $calls = array();
+        $calls = [];
 
         foreach ($builder->getMethodCalls() as list($method, $arguments)) {
             if ('setTranslator' === $method) {
@@ -70,7 +70,7 @@ public function process(ContainerBuilder $container)
                 }
             }
 
-            $calls[] = array($method, $arguments);
+            $calls[] = [$method, $arguments];
         }
 
         $builder->setMethodCalls($calls);
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/BicValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/BicValidatorTest.php
index 231843a792d4..6820f2c507c8 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/BicValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/BicValidatorTest.php
@@ -57,14 +57,14 @@ public function testValidBics($bic)
     public function getValidBics()
     {
         // http://formvalidation.io/validators/bic/
-        return array(
-            array('ASPKAT2LXXX'),
-            array('ASPKAT2L'),
-            array('DSBACNBXSHA'),
-            array('UNCRIT2B912'),
-            array('DABADKKK'),
-            array('RZOOAT2L303'),
-        );
+        return [
+            ['ASPKAT2LXXX'],
+            ['ASPKAT2L'],
+            ['DSBACNBXSHA'],
+            ['UNCRIT2B912'],
+            ['DABADKKK'],
+            ['RZOOAT2L303'],
+        ];
     }
 
     /**
@@ -72,9 +72,9 @@ public function getValidBics()
      */
     public function testInvalidBics($bic, $code)
     {
-        $constraint = new Bic(array(
+        $constraint = new Bic([
             'message' => 'myMessage',
-        ));
+        ]);
 
         $this->validator->validate($bic, $constraint);
 
@@ -86,31 +86,31 @@ public function testInvalidBics($bic, $code)
 
     public function getInvalidBics()
     {
-        return array(
-            array('DEUTD', Bic::INVALID_LENGTH_ERROR),
-            array('ASPKAT2LXX', Bic::INVALID_LENGTH_ERROR),
-            array('ASPKAT2LX', Bic::INVALID_LENGTH_ERROR),
-            array('ASPKAT2LXXX1', Bic::INVALID_LENGTH_ERROR),
-            array('DABADKK', Bic::INVALID_LENGTH_ERROR),
-            array('1SBACNBXSHA', Bic::INVALID_BANK_CODE_ERROR),
-            array('RZ00AT2L303', Bic::INVALID_BANK_CODE_ERROR),
-            array('D2BACNBXSHA', Bic::INVALID_BANK_CODE_ERROR),
-            array('DS3ACNBXSHA', Bic::INVALID_BANK_CODE_ERROR),
-            array('DSB4CNBXSHA', Bic::INVALID_BANK_CODE_ERROR),
-            array('DEUT12HH', Bic::INVALID_COUNTRY_CODE_ERROR),
-            array('DSBAC6BXSHA', Bic::INVALID_COUNTRY_CODE_ERROR),
-            array('DSBA5NBXSHA', Bic::INVALID_COUNTRY_CODE_ERROR),
-            array('DSBAAABXSHA', Bic::INVALID_COUNTRY_CODE_ERROR),
+        return [
+            ['DEUTD', Bic::INVALID_LENGTH_ERROR],
+            ['ASPKAT2LXX', Bic::INVALID_LENGTH_ERROR],
+            ['ASPKAT2LX', Bic::INVALID_LENGTH_ERROR],
+            ['ASPKAT2LXXX1', Bic::INVALID_LENGT
F438
H_ERROR],
+            ['DABADKK', Bic::INVALID_LENGTH_ERROR],
+            ['1SBACNBXSHA', Bic::INVALID_BANK_CODE_ERROR],
+            ['RZ00AT2L303', Bic::INVALID_BANK_CODE_ERROR],
+            ['D2BACNBXSHA', Bic::INVALID_BANK_CODE_ERROR],
+            ['DS3ACNBXSHA', Bic::INVALID_BANK_CODE_ERROR],
+            ['DSB4CNBXSHA', Bic::INVALID_BANK_CODE_ERROR],
+            ['DEUT12HH', Bic::INVALID_COUNTRY_CODE_ERROR],
+            ['DSBAC6BXSHA', Bic::INVALID_COUNTRY_CODE_ERROR],
+            ['DSBA5NBXSHA', Bic::INVALID_COUNTRY_CODE_ERROR],
+            ['DSBAAABXSHA', Bic::INVALID_COUNTRY_CODE_ERROR],
 
             // branch code error
-            array('THISSVAL1D]', Bic::INVALID_CHARACTERS_ERROR),
+            ['THISSVAL1D]', Bic::INVALID_CHARACTERS_ERROR],
 
             // location code error
-            array('DEUTDEF]', Bic::INVALID_CHARACTERS_ERROR),
+            ['DEUTDEF]', Bic::INVALID_CHARACTERS_ERROR],
 
             // lower case values are invalid
-            array('DeutAT2LXXX', Bic::INVALID_CASE_ERROR),
-            array('DEUTAT2lxxx', Bic::INVALID_CASE_ERROR),
-        );
+            ['DeutAT2LXXX', Bic::INVALID_CASE_ERROR],
+            ['DEUTAT2lxxx', Bic::INVALID_CASE_ERROR],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/DivisibleByValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/DivisibleByValidatorTest.php
index 3c770a9f9be4..e2d50574a710 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/DivisibleByValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/DivisibleByValidatorTest.php
@@ -39,16 +39,16 @@ protected function getErrorCode()
      */
     public function provideValidComparisons()
     {
-        return array(
-            array(-7, 1),
-            array(0, 3.1415),
-            array(42, 42),
-            array(42, 21),
-            array(3.25, 0.25),
-            array('100', '10'),
-            array(4.1, 0.1),
-            array(-4.1, 0.1),
-        );
+        return [
+            [-7, 1],
+            [0, 3.1415],
+            [42, 42],
+            [42, 21],
+            [3.25, 0.25],
+            ['100', '10'],
+            [4.1, 0.1],
+            [-4.1, 0.1],
+        ];
     }
 
     /**
@@ -56,9 +56,9 @@ public function provideValidComparisons()
      */
     public function provideValidComparisonsToPropertyPath()
     {
-        return array(
-            array(25),
-        );
+        return [
+            [25],
+        ];
     }
 
     /**
@@ -66,13 +66,13 @@ public function provideValidComparisonsToPropertyPath()
      */
     public function provideInvalidComparisons()
     {
-        return array(
-            array(1, '1', 2, '2', 'integer'),
-            array(10, '10', 3, '3', 'integer'),
-            array(10, '10', 0, '0', 'integer'),
-            array(42, '42', INF, 'INF', 'double'),
-            array(4.15, '4.15', 0.1, '0.1', 'double'),
-            array('22', '"22"', '10', '"10"', 'string'),
-        );
+        return [
+            [1, '1', 2, '2', 'integer'],
+            [10, '10', 3, '3', 'integer'],
+            [10, '10', 0, '0', 'integer'],
+            [42, '42', INF, 'INF', 'double'],
+            [4.15, '4.15', 0.1, '0.1', 'double'],
+            ['22', '"22"', '10', '"10"', 'string'],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/DependencyInjection/AddValidatorInitializersPassTest.php b/src/Symfony/Component/Validator/Tests/DependencyInjection/AddValidatorInitializersPassTest.php
index 5cc3b0c9216d..42d7553e13cf 100644
--- a/src/Symfony/Component/Validator/Tests/DependencyInjection/AddValidatorInitializersPassTest.php
+++ b/src/Symfony/Component/Validator/Tests/DependencyInjection/AddValidatorInitializersPassTest.php
@@ -59,7 +59,7 @@ public function testLegacyTranslatorProxy()
         $container = new ContainerBuilder();
         $container
             ->register('validator.builder')
-            ->addMethodCall('setTranslator', array(new Reference('translator')))
+            ->addMethodCall('setTranslator', [new Reference('translator')])
         ;
 
         $container->register('translator', TestTranslator::class);
@@ -67,7 +67,7 @@ public function testLegacyTranslatorProxy()
         (new AddValidatorInitializersPass())->process($container);
 
         $this->assertEquals(
-            array(array('setTranslator', array((new Definition(LegacyTranslatorProxy::class))->addArgument(new Reference('translator'))))),
+            [['setTranslator', [(new Definition(LegacyTranslatorProxy::class))->addArgument(new Reference('translator'))]]],
             $container->getDefinition('validator.builder')->removeMethodCall('addObjectInitializers')->getMethodCalls()
         );
     }
diff --git a/src/Symfony/Component/Validator/Util/LegacyTranslatorProxy.php b/src/Symfony/Component/Validator/Util/LegacyTranslatorProxy.php
index f87c1fbbb3ea..51218e7c5777 100644
--- a/src/Symfony/Component/Validator/Util/LegacyTranslatorProxy.php
+++ b/src/Symfony/Component/Validator/Util/LegacyTranslatorProxy.php
@@ -54,7 +54,7 @@ public function getLocale()
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         return $this->translator->trans($id, $parameters, $domain, $locale);
     }
@@ -62,8 +62,8 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
     /**
      * {@inheritdoc}
      */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
+    public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
-        return $this->translator->trans($id, array('%count%' => $number) + $parameters, $domain, $locale);
+        return $this->translator->trans($id, ['%count%' => $number] + $parameters, $domain, $locale);
     }
 }
diff --git a/src/Symfony/Component/Validator/ValidatorBuilder.php b/src/Symfony/Component/Validator/ValidatorBuilder.php
index 8e4de01267e0..fb643327125d 100644
--- a/src/Symfony/Component/Validator/ValidatorBuilder.php
+++ b/src/Symfony/Component/Validator/ValidatorBuilder.php
@@ -43,11 +43,11 @@
  */
 class ValidatorBuilder implements ValidatorBuilderInterface
 {
-    private $initializers = array();
-    private $loaders = array();
-    private $xmlMappings = array();
-    private $yamlMappings = array();
-    private $methodMappings = array();
+    private $initializers = [];
+    private $loaders = [];
+    private $xmlMappings = [];
+    private $yamlMappings = [];
+    private $methodMappings = [];
 
     /**
      * @var Reader|null
@@ -288,7 +288,7 @@ public function addLoader(LoaderInterface $loader)
      */
     public function getLoaders()
     {
-        $loaders = array();
+        $loaders = [];
 
         foreach ($this->xmlMappings as $xmlMapping) {
             $loaders[] = new XmlFileLoader($xmlMapping);
diff --git a/src/Symfony/Component/Validator/Violation/ConstraintViolationBuilder.php b/src/Symfony/Component/Validator/Violation/ConstraintViolationBuilder.php
index abca36a53662..c5b1d0b83f01 100644
--- a/src/Symfony/Component/Validator/Violation/ConstraintViolationBuilder.php
+++ b/src/Symfony/Component/Validator/Violation/ConstraintViolationBuilder.php
@@ -157,7 +157,7 @@ public function addViolation()
         } elseif ($this->translator instanceof TranslatorInterface) {
             $translatedMessage = $this->translator->trans(
                 $this->message,
-                array('%count%' => $this->plural) + $this->parameters,
+                ['%count%' => $this->plural] + $this->parameters,
                 $this->translationDomain
             );
         } else {
diff --git a/src/Symfony/Component/VarDumper/Caster/ClassStub.php b/src/Symfony/Component/VarDumper/Caster/ClassStub.php
index d067d8316892..b655ae960e16 100644
--- a/src/Symfony/Component/VarDumper/Caster/ClassStub.php
+++ b/src/Symfony/Component/VarDumper/Caster/ClassStub.php
@@ -62,7 +62,7 @@ public function __construct(string $identifier, $callable = null)
             }
 
             if (null !== $callable && $r instanceof \ReflectionFunctionAbstract) {
-                $s = ReflectionCaster::castFunctionAbstract($r, array(), new Stub(), true);
+                $s = ReflectionCaster::castFunctionAbstract($r, [], new Stub(), true);
                 $s = ReflectionCaster::getSignature($s);
 
                 if ('()' === substr($identifier, -2)) {
diff --git a/src/Symfony/Component/VarDumper/Caster/IntlCaster.php b/src/Symfony/Component/VarDumper/Caster/IntlCaster.php
index a69813079c43..7794d6cbccdd 100644
--- a/src/Symfony/Component/VarDumper/Caster/IntlCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/IntlCaster.php
@@ -21,20 +21,20 @@ class IntlCaster
 {
     public static function castMessageFormatter(\MessageFormatter $c, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'locale' => $c->getLocale(),
             Caster::PREFIX_VIRTUAL.'pattern' => $c->getPattern(),
-        );
+        ];
 
         return self::castError($c, $a);
     }
 
     public static function castNumberFormatter(\NumberFormatter $c, array $a, Stub $stub, $isNested, $filter = 0)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'locale' => $c->getLocale(),
             Caster::PREFIX_VIRTUAL.'pattern' => $c->getPattern(),
-        );
+        ];
 
         if ($filter & Caster::EXCLUDE_VERBOSE) {
             $stub->cut += 3;
@@ -42,9 +42,9 @@ public static function castNumberFormatter(\NumberFormatter $c, array $a, Stub $
             return self::castError($c, $a);
         }
 
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'attributes' => new EnumStub(
-                array(
+                [
                     'PARSE_INT_ONLY' => $c->getAttribute(\NumberFormatter::PARSE_INT_ONLY),
                     'GROUPING_USED' => $c->getAttribute(\NumberFormatter::GROUPING_USED),
                     'DECIMAL_ALWAYS_SHOWN' => $c->getAttribute(\NumberFormatter::DECIMAL_ALWAYS_SHOWN),
@@ -65,10 +65,10 @@ public static function castNumberFormatter(\NumberFormatter $c, array $a, Stub $
                     'MIN_SIGNIFICANT_DIGITS' => $c->getAttribute(\NumberFormatter::MIN_SIGNIFICANT_DIGITS),
                     'MAX_SIGNIFICANT_DIGITS' => $c->getAttribute(\NumberFormatter::MAX_SIGNIFICANT_DIGITS),
                     'LENIENT_PARSE' => $c->getAttribute(\NumberFormatter::LENIENT_PARSE),
-                )
+                ]
             ),
             Caster::PREFIX_VIRTUAL.'text_attributes' => new EnumStub(
-                array(
+                [
                     'POSITIVE_PREFIX' => $c->getTextAttribute(\NumberFormatter::POSITIVE_PREFIX),
                     'POSITIVE_SUFFIX' => $c->getTextAttribute(\NumberFormatter::POSITIVE_SUFFIX),
                     'NEGATIVE_PREFIX' => $c->getTextAttribute(\NumberFormatter::NEGATIVE_PREFIX),
@@ -77,10 +77,10 @@ public static function castNumberFormatter(\NumberFormatter $c, array $a, Stub $
                     'CURRENCY_CODE' => $c->getTextAttribute(\NumberFormatter::CURRENCY_CODE),
                     'DEFAULT_RULESET' => $c->getTextAttribute(\NumberFormatter::DEFAULT_RULESET),
                     'PUBLIC_RULESETS' => $c->getTextAttribute(\NumberFormatter::PUBLIC_RULESETS),
-                )
+                ]
             ),
             Caster::PREFIX_VIRTUAL.'symbols' => new EnumStub(
-                array(
+                [
                     'DECIMAL_SEPARATOR_SYMBOL' => $c->getSymbol(\NumberFormatter::DECIMAL_SEPARATOR_SYMBOL),
                     'GROUPING_SEPARATOR_SYMBOL' => $c->getSymbol(\NumberFormatter::GROUPING_SEPARATOR_SYMBOL),
                     'PATTERN_SEPARATOR_SYMBOL' => $c->getSymbol(\NumberFormatter::PATTERN_SEPARATOR_SYMBOL),
@@ -99,25 +99,25 @@ public static function castNumberFormatter(\NumberFormatter $c, array $a, Stub $
                     'NAN_SYMBOL' => $c->getSymbol(\NumberFormatter::NAN_SYMBOL),
                     'SIGNIFICANT_DIGIT_SYMBOL' => $c->getSymbol(\NumberFormatter::SIGNIFICANT_DIGIT_SYMBOL),
                     'MONETARY_GROUPING_SEPARATOR_SYMBOL' => $c->getSymbol(\NumberFormatter::MONETARY_GROUPING_SEPARATOR_SYMBOL),
-                )
+                ]
              ),
-        );
+        ];
 
         return self::castError($c, $a);
     }
 
     public static function castIntlTimeZone(\IntlTimeZone $c, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'display_name' => $c->getDisplayName(),
             Caster::PREFIX_VIRTUAL.'id' => $c->getID(),
             Caster::PREFIX_VIRTUAL.'raw_offset' => $c->getRawOffset(),
-        );
+        ];
 
         if ($c->useDaylightTime()) {
-            $a += array(
+            $a += [
                 Caster::PREFIX_VIRTUAL.'dst_savings' => $c->getDSTSavings(),
-            );
+            ];
         }
 
         return self::castError($c, $a);
@@ -125,7 +125,7 @@ public static function castIntlTimeZone(\IntlTimeZone $c, array $a, Stub $stub,
 
     public static function castIntlCalendar(\IntlCalendar $c, array $a, Stub $stub, $isNested, $filter = 0)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'type' => $c->getType(),
             Caster::PREFIX_VIRTUAL.'first_day_of_week' => $c->getFirstDayOfWeek(),
             Caster::PREFIX_VIRTUAL.'minimal_days_in_first_week' => $c->getMinimalDaysInFirstWeek(),
@@ -136,14 +136,14 @@ public static function castIntlCalendar(\IntlCalendar $c, array $a, Stub $stub,
             Caster::PREFIX_VIRTUAL.'in_daylight_time' => $c->inDaylightTime(),
             Caster::PREFIX_VIRTUAL.'is_lenient' => $c->isLenient(),
             Caster::PREFIX_VIRTUAL.'time_zone' => ($filter & Caster::EXCLUDE_VERBOSE) ? new CutStub($c->getTimeZone()) : $c->getTimeZone(),
-        );
+        ];
 
         return self::castError($c, $a);
     }
 
     public static function castIntlDateFormatter(\IntlDateFormatter $c, array $a, Stub $stub, $isNested, $filter = 0)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'locale' => $c->getLocale(),
             Caster::PREFIX_VIRTUAL.'pattern' => $c->getPattern(),
             Caster::PREFIX_VIRTUAL.'calendar' => $c->getCalendar(),
@@ -152,7 +152,7 @@ public static function castIntlDateFormatter(\IntlDateFormatter $c, array $a, St
             Caster::PREFIX_VIRTUAL.'date_type' => $c->getDateType(),
             Caster::PREFIX_VIRTUAL.'calendar_object' => ($filter & Caster::EXCLUDE_VERBOSE) ? new CutStub($c->getCalendarObject()) : $c->getCalendarObject(),
             Caster::PREFIX_VIRTUAL.'time_zone' => ($filter & Caster::EXCLUDE_VERBOSE) ? new CutStub($c->getTimeZone()) : $c->getTimeZone(),
-        );
+        ];
 
         return self::castError($c, $a);
     }
@@ -160,10 +160,10 @@ public static function castIntlDateFormatter(\IntlDateFormatter $c, array $a, St
     private static function castError($c, array $a): array
     {
         if ($errorCode = $c->getErrorCode()) {
-            $a += array(
+            $a += [
                 Caster::PREFIX_VIRTUAL.'error_code' => $errorCode,
                 Caster::PREFIX_VIRTUAL.'error_message' => $c->getErrorMessage(),
-            );
+            ];
         }
 
         return $a;
diff --git a/src/Symfony/Component/VarDumper/Caster/MemcachedCaster.php b/src/Symfony/Component/VarDumper/Caster/MemcachedCaster.php
index 99a33bca636b..a32654683dd2 100644
--- a/src/Symfony/Component/VarDumper/Caster/MemcachedCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/MemcachedCaster.php
@@ -23,12 +23,12 @@ class MemcachedCaster
 
     public static function castMemcached(\Memcached $c, array $a, Stub $stub, $isNested)
     {
-        $a += array(
+        $a += [
             Caster::PREFIX_VIRTUAL.'servers' => $c->getServerList(),
             Caster::PREFIX_VIRTUAL.'options' => new EnumStub(
                 self::getNonDefaultOptions($c)
             ),
-        );
+        ];
 
         return $a;
     }
@@ -38,7 +38,7 @@ private static function getNonDefaultOptions(\Memcached $c)
         self::$defaultOptions = self::$defaultOptions ?? self::discoverDefaultOptions();
         self::$optionConstants = self::$optionConstants ?? self::getOptionConstants();
 
-        $nonDefaultOptions = array();
+        $nonDefaultOptions = [];
         foreach (self::$optionConstants as $constantKey => $value) {
             if (self::$defaultOptions[$constantKey] !== $option = $c->getOption($value)) {
                 $nonDefaultOptions[$constantKey] = $option;
@@ -53,7 +53,7 @@ private static function discoverDefaultOptions()
         $defaultMemcached = new \Memcached();
         $defaultMemcached->addServer('127.0.0.1', 11211);
 
-        $defaultOptions = array();
+        $defaultOptions = [];
         self::$optionConstants = self::$optionConstants ?? self::getOptionConstants();
 
         foreach (self::$optionConstants as $constantKey => $value) {
@@ -67,7 +67,7 @@ private static function getOptionConstants()
     {
         $reflectedMemcached = new \ReflectionClass(\Memcached::class);
 
-        $optionConstants = array();
+        $optionConstants = [];
         foreach ($reflectedMemcached->getConstants() as $constantKey => $value) {
             if (0 === strpos($constantKey, 'OPT_')) {
                 $optionConstants[$constantKey] = $value;
diff --git a/src/Symfony/Component/VarDumper/Caster/RedisCaster.php b/src/Symfony/Component/VarDumper/Caster/RedisCaster.php
index 0fcd9d96fd1c..558a0804d583 100644
--- a/src/Symfony/Component/VarDumper/Caster/RedisCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/RedisCaster.php
@@ -20,43 +20,43 @@
  */
 class RedisCaster
 {
-    private static $serializer = array(
+    private static $serializer = [
         \Redis::SERIALIZER_NONE => 'NONE',
         \Redis::SERIALIZER_PHP => 'PHP',
         2 => 'IGBINARY', // Optional Redis::SERIALIZER_IGBINARY
-    );
+    ];
 
-    private static $mode = array(
+    private static $mode = [
         \Redis::ATOMIC => 'ATOMIC',
         \Redis::MULTI => 'MULTI',
         \Redis::PIPELINE => 'PIPELINE',
-    );
+    ];
 
-    private static $compression = array(
+    private static $compression = [
         0 => 'NONE', // Redis::COMPRESSION_NONE
         1 => 'LZF',  // Redis::COMPRESSION_LZF
-    );
+    ];
 
-    private static $failover = array(
+    private static $failover = [
         \RedisCluster::FAILOVER_NONE => 'NONE',
         \RedisCluster::FAILOVER_ERROR => 'ERROR',
         \RedisCluster::FAILOVER_DISTRIBUTE => 'DISTRIBUTE',
         \RedisCluster::FAILOVER_DISTRIBUTE_SLAVES => 'DISTRIBUTE_SLAVES',
-    );
+    ];
 
     public static function castRedis(\Redis $c, array $a, Stub $stub, $isNested)
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
         if (!$connected = $c->isConnected()) {
-            return $a + array(
+            return $a + [
                 $prefix.'isConnected' => $connected,
-            );
+            ];
         }
 
         $mode = $c->getMode();
 
-        return $a + array(
+        return $a + [
             $prefix.'isConnected' => $connected,
             $prefix.'host' => $c->getHost(),
             $prefix.'port' => $c->getPort(),
@@ -67,19 +67,19 @@ public static function castRedis(\Redis $c, array $a, Stub $stub, $isNested)
             $prefix.'lastError' => $c->getLastError(),
             $prefix.'persistentId' => $c->getPersistentID(),
             $prefix.'options' => self::getRedisOptions($c),
-        );
+        ];
     }
 
     public static function castRedisArray(\RedisArray $c, array $a, Stub $stub, $isNested)
     {
         $prefix = Caster::PREFIX_VIRTUAL;
 
-        return $a + array(
+        return $a + [
             $prefix.'hosts' => $c->_hosts(),
             $prefix.'function' => ClassStub::wrapCallable($c->_function()),
             $prefix.'lastError' => $c->getLastError(),
             $prefix.'options' => self::getRedisOptions($c),
-        );
+        ];
     }
 
     public static function castRedisCluster(\RedisCluster $c, array $a, Stub $stub, $isNested)
@@ -87,15 +87,15 @@ public static function castRedisCluster(\RedisCluster $c, array $a, Stub $stub,
         $prefix = Caster::PREFIX_VIRTUAL;
         $failover = $c->getOption(\RedisCluster::OPT_SLAVE_FAILOVER);
 
-        $a += array(
+        $a += [
             $prefix.'_masters' => $c->_masters(),
             $prefix.'_redir' => $c->_redir(),
             $prefix.'mode' => new ConstStub($c->getMode() ? 'MULTI' : 'ATOMIC', $c->getMode()),
             $prefix.'lastError' => $c->getLastError(),
-            $prefix.'options' => self::getRedisOptions($c, array(
+            $prefix.'options' => self::getRedisOptions($c, [
                 'SLAVE_FAILOVER' => isset(self::$failover[$failover]) ? new ConstStub(self::$failover[$failover], $failover) : $failover,
-            )),
-        );
+            ]),
+        ];
 
         return $a;
     }
@@ -103,7 +103,7 @@ public static function castRedisCluster(\RedisCluster $c, array $a, Stub $stub,
     /**
      * @param \Redis|\RedisArray|\RedisCluster $redis
      */
-    private static function getRedisOptions($redis, array $options = array()): EnumStub
+    private static function getRedisOptions($redis, array $options = []): EnumStub
     {
         $serializer = $redis->getOption(\Redis::OPT_SERIALIZER);
         if (\is_array($serializer)) {
@@ -136,14 +136,14 @@ private static function getRedisOptions($redis, array $options = array()): EnumS
             $retry = new ConstStub($retry ? 'RETRY' : 'NORETRY', $retry);
         }
 
-        $options += array(
+        $options += [
             'TCP_KEEPALIVE' => \defined('Redis::OPT_TCP_KEEPALIVE') ? $redis->getOption(\Redis::OPT_TCP_KEEPALIVE) : 0,
             'READ_TIMEOUT' => $redis->getOption(\Redis::OPT_READ_TIMEOUT),
             'COMPRESSION' => $compression,
             'SERIALIZER' => $serializer,
             'PREFIX' => $redis->getOption(\Redis::OPT_PREFIX),
             'SCAN' => $retry,
-        );
+        ];
 
         return new EnumStub($options);
     }
diff --git a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
index ff19be70965a..1ecfa2d2d191 100644
--- a/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/ReflectionCaster.php
@@ -49,7 +49,7 @@ public static function castClosure(\Closure $c, array $a, Stub $stub, $isNested,
         if ($filter & Caster::EXCLUDE_VERBOSE) {
             $stub->cut += ($c->getFileName() ? 2 : 0) + \count($a);
 
-            return array();
+            return [];
         }
 
         if (isset($a[$prefix.'parameters'])) {
diff --git a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
index 9c8ec92bea43..bf2e679cef93 100644
--- a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
+++ b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
@@ -21,133 +21,133 @@
  */
 abstract class AbstractCloner implements ClonerInterface
 {
-    public static $defaultCasters = array(
-        '__PHP_Incomplete_Class' => array('Symfony\Component\VarDumper\Caster\Caster', 'castPhpIncompleteClass'),
-
-        'Symfony\Component\VarDumper\Caster\CutStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'),
-        'Symfony\Component\VarDumper\Caster\CutArrayStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castCutArray'),
-        'Symfony\Component\VarDumper\Caster\ConstStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'),
-        'Symfony\Component\VarDumper\Caster\EnumStub' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'castEnum'),
-
-        'Closure' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClosure'),
-        'Generator' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castGenerator'),
-        'ReflectionType' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castType'),
-        'ReflectionGenerator' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castReflectionGenerator'),
-        'ReflectionClass' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClass'),
-        'ReflectionFunctionAbstract' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castFunctionAbstract'),
-        'ReflectionMethod' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castMethod'),
-        'ReflectionParameter' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castParameter'),
-        'ReflectionProperty' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castProperty'),
-        'ReflectionExtension' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castExtension'),
-        'ReflectionZendExtension' => array('Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castZendExtension'),
-
-        'Doctrine\Common\Persistence\ObjectManager' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Doctrine\Common\Proxy\Proxy' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castCommonProxy'),
-        'Doctrine\ORM\Proxy\Proxy' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castOrmProxy'),
-        'Doctrine\ORM\PersistentCollection' => array('Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castPersistentCollection'),
-
-        'DOMException' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castException'),
-        'DOMStringList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNameList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMImplementation' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castImplementation'),
-        'DOMImplementationList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNode' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNode'),
-        'DOMNameSpaceNode' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNameSpaceNode'),
-        'DOMDocument' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocument'),
-        'DOMNodeList' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMNamedNodeMap' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'),
-        'DOMCharacterData' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castCharacterData'),
-        'DOMAttr' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castAttr'),
-        'DOMElement' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castElement'),
-        'DOMText' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castText'),
-        'DOMTypeinfo' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castTypeinfo'),
-        'DOMDomError' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDomError'),
-        'DOMLocator' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castLocator'),
-        'DOMDocumentType' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocumentType'),
-        'DOMNotation' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castNotation'),
-        'DOMEntity' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castEntity'),
-        'DOMProcessingInstruction' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castProcessingInstruction'),
-        'DOMXPath' => array('Symfony\Component\VarDumper\Caster\DOMCaster', 'castXPath'),
-
-        'XmlReader' => array('Symfony\Component\VarDumper\Caster\XmlReaderCaster', 'castXmlReader'),
-
-        'ErrorException' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castErrorException'),
-        'Exception' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castException'),
-        'Error' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castError'),
-        'Symfony\Component\DependencyInjection\ContainerInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Symfony\Component\HttpFoundation\Request' => array('Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castRequest'),
-        'Symfony\Component\VarDumper\Exception\ThrowingCasterException' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castThrowingCasterException'),
-        'Symfony\Component\VarDumper\Caster\TraceStub' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castTraceStub'),
-        'Symfony\Component\VarDumper\Caster\FrameStub' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castFrameStub'),
-        'Symfony\Component\Debug\Exception\SilencedErrorContext' => array('Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castSilencedErrorContext'),
-
-        'ProxyManager\Proxy\ProxyInterface' => array('Symfony\Component\VarDumper\Caster\ProxyManagerCaster', 'castProxy'),
-        'PHPUnit_Framework_MockObject_MockObject' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Prophecy\Prophecy\ProphecySubjectInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-        'Mockery\MockInterface' => array('Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'),
-
-        'PDO' => array('Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdo'),
-        'PDOStatement' => array('Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdoStatement'),
-
-        'AMQPConnection' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castConnection'),
-        'AMQPChannel' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castChannel'),
-        'AMQPQueue' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castQueue'),
-        'AMQPExchange' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castExchange'),
-        'AMQPEnvelope' => array('Symfony\Component\VarDumper\Caster\AmqpCaster', 'castEnvelope'),
-
-        'ArrayObject' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayObject'),
-        'ArrayIterator' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayIterator'),
-        'SplDoublyLinkedList' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castDoublyLinkedList'),
-        'SplFileInfo' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFileInfo'),
-        'SplFileObject' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFileObject'),
-        'SplFixedArray' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castFixedArray'),
-        'SplHeap' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'),
-        'SplObjectStorage' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castObjectStorage'),
-        'SplPriorityQueue' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'),
-        'OuterIterator' => array('Symfony\Component\VarDumper\Caster\SplCaster', 'castOuterIterator'),
-
-        'Redis' => array('Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedis'),
-        'RedisArray' => array('Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisArray'),
-        'RedisCluster' => array('Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisCluster'),
-
-        'DateTimeInterface' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castDateTime'),
-        'DateInterval' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castInterval'),
-        'DateTimeZone' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castTimeZone'),
-        'DatePeriod' => array('Symfony\Component\VarDumper\Caster\DateCaster', 'castPeriod'),
-
-        'GMP' => array('Symfony\Component\VarDumper\Caster\GmpCaster', 'castGmp'),
-
-        'MessageFormatter' => array('Symfony\Component\VarDumper\Caster\IntlCaster', 'castMessageFormatter'),
-        'NumberFormatter' => array('Symfony\Component\VarDumper\Caster\IntlCaster', 'castNumberFormatter'),
-        'IntlTimeZone' => array('Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlTimeZone'),
-        'IntlCalendar' => array('Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlCalendar'),
-        'IntlDateFormatter' => array('Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlDateFormatter'),
-
-        'Memcached' => array('Symfony\Component\VarDumper\Caster\MemcachedCaster', 'castMemcached'),
-
-        ':curl' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castCurl'),
-        ':dba' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'),
-        ':dba persistent' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'),
-        ':gd' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castGd'),
-        ':mysql link' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castMysqlLink'),
-        ':pgsql large object' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLargeObject'),
-        ':pgsql link' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'),
-        ':pgsql link persistent' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'),
-        ':pgsql result' => array('Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castResult'),
-        ':process' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castProcess'),
-        ':stream' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'),
-        ':persistent stream' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'),
-        ':stream-context' => array('Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStreamContext'),
-        ':xml' => array('Symfony\Component\VarDumper\Caster\XmlResourceCaster', 'castXml'),
-    );
+    public static $defaultCasters = [
+        '__PHP_Incomplete_Class' => ['Symfony\Component\VarDumper\Caster\Caster', 'castPhpIncompleteClass'],
+
+        'Symfony\Component\VarDumper\Caster\CutStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'],
+        'Symfony\Component\VarDumper\Caster\CutArrayStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castCutArray'],
+        'Symfony\Component\VarDumper\Caster\ConstStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castStub'],
+        'Symfony\Component\VarDumper\Caster\EnumStub' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'castEnum'],
+
+        'Closure' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClosure'],
+        'Generator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castGenerator'],
+        'ReflectionType' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castType'],
+        'ReflectionGenerator' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castReflectionGenerator'],
+        'ReflectionClass' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castClass'],
+        'ReflectionFunctionAbstract' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castFunctionAbstract'],
+        'ReflectionMethod' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castMethod'],
+        'ReflectionParameter' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castParameter'],
+        'ReflectionProperty' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castProperty'],
+        'ReflectionExtension' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castExtension'],
+        'ReflectionZendExtension' => ['Symfony\Component\VarDumper\Caster\ReflectionCaster', 'castZendExtension'],
+
+        'Doctrine\Common\Persistence\ObjectManager' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Doctrine\Common\Proxy\Proxy' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castCommonProxy'],
+        'Doctrine\ORM\Proxy\Proxy' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castOrmProxy'],
+        'Doctrine\ORM\PersistentCollection' => ['Symfony\Component\VarDumper\Caster\DoctrineCaster', 'castPersistentCollection'],
+
+        'DOMException' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castException'],
+        'DOMStringList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNameList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMImplementation' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castImplementation'],
+        'DOMImplementationList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNode' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNode'],
+        'DOMNameSpaceNode' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNameSpaceNode'],
+        'DOMDocument' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocument'],
+        'DOMNodeList' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMNamedNodeMap' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLength'],
+        'DOMCharacterData' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castCharacterData'],
+        'DOMAttr' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castAttr'],
+        'DOMElement' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castElement'],
+        'DOMText' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castText'],
+        'DOMTypeinfo' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castTypeinfo'],
+        'DOMDomError' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDomError'],
+        'DOMLocator' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castLocator'],
+        'DOMDocumentType' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castDocumentType'],
+        'DOMNotation' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castNotation'],
+        'DOMEntity' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castEntity'],
+        'DOMProcessingInstruction' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castProcessingInstruction'],
+        'DOMXPath' => ['Symfony\Component\VarDumper\Caster\DOMCaster', 'castXPath'],
+
+        'XmlReader' => ['Symfony\Component\VarDumper\Caster\XmlReaderCaster', 'castXmlReader'],
+
+        'ErrorException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castErrorException'],
+        'Exception' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castException'],
+        'Error' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castError'],
+        'Symfony\Component\DependencyInjection\ContainerInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Symfony\Component\HttpFoundation\Request' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castRequest'],
+        'Symfony\Component\VarDumper\Exception\ThrowingCasterException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castThrowingCasterException'],
+        'Symfony\Component\VarDumper\Caster\TraceStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castTraceStub'],
+        'Symfony\Component\VarDumper\Caster\FrameStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castFrameStub'],
+        'Symfony\Component\Debug\Exception\SilencedErrorContext' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castSilencedErrorContext'],
+
+        'ProxyManager\Proxy\ProxyInterface' => ['Symfony\Component\VarDumper\Caster\ProxyManagerCaster', 'castProxy'],
+        'PHPUnit_Framework_MockObject_MockObject' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Prophecy\Prophecy\ProphecySubjectInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Mockery\MockInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+
+        'PDO' => ['Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdo'],
+        'PDOStatement' => ['Symfony\Component\VarDumper\Caster\PdoCaster', 'castPdoStatement'],
+
+        'AMQPConnection' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castConnection'],
+        'AMQPChannel' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castChannel'],
+        'AMQPQueue' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castQueue'],
+        'AMQPExchange' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castExchange'],
+        'AMQPEnvelope' => ['Symfony\Component\VarDumper\Caster\AmqpCaster', 'castEnvelope'],
+
+        'ArrayObject' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayObject'],
+        'ArrayIterator' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castArrayIterator'],
+        'SplDoublyLinkedList' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castDoublyLinkedList'],
+        'SplFileInfo' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFileInfo'],
+        'SplFileObject' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFileObject'],
+        'SplFixedArray' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castFixedArray'],
+        'SplHeap' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'],
+        'SplObjectStorage' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castObjectStorage'],
+        'SplPriorityQueue' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castHeap'],
+        'OuterIterator' => ['Symfony\Component\VarDumper\Caster\SplCaster', 'castOuterIterator'],
+
+        'Redis' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedis'],
+        'RedisArray' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisArray'],
+        'RedisCluster' => ['Symfony\Component\VarDumper\Caster\RedisCaster', 'castRedisCluster'],
+
+        'DateTimeInterface' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castDateTime'],
+        'DateInterval' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castInterval'],
+        'DateTimeZone' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castTimeZone'],
+        'DatePeriod' => ['Symfony\Component\VarDumper\Caster\DateCaster', 'castPeriod'],
+
+        'GMP' => ['Symfony\Component\VarDumper\Caster\GmpCaster', 'castGmp'],
+
+        'MessageFormatter' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castMessageFormatter'],
+        'NumberFormatter' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castNumberFormatter'],
+        'IntlTimeZone' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlTimeZone'],
+        'IntlCalendar' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlCalendar'],
+        'IntlDateFormatter' => ['Symfony\Component\VarDumper\Caster\IntlCaster', 'castIntlDateFormatter'],
+
+        'Memcached' => ['Symfony\Component\VarDumper\Caster\MemcachedCaster', 'castMemcached'],
+
+        ':curl' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castCurl'],
+        ':dba' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'],
+        ':dba persistent' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castDba'],
+        ':gd' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castGd'],
+        ':mysql link' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castMysqlLink'],
+        ':pgsql large object' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLargeObject'],
+        ':pgsql link' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'],
+        ':pgsql link persistent' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castLink'],
+        ':pgsql result' => ['Symfony\Component\VarDumper\Caster\PgSqlCaster', 'castResult'],
+        ':process' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castProcess'],
+        ':stream' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'],
+        ':persistent stream' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStream'],
+        ':stream-context' => ['Symfony\Component\VarDumper\Caster\ResourceCaster', 'castStreamContext'],
+        ':xml' => ['Symfony\Component\VarDumper\Caster\XmlResourceCaster', 'castXml'],
+    ];
 
     protected $maxItems = 2500;
     protected $maxString = -1;
     protected $minDepth = 1;
 
-    private $casters = array();
+    private $casters = [];
     private $prevErrorHandler;
-    private $classInfo = array();
+    private $classInfo = [];
     private $filter = 0;
 
     /**
@@ -221,7 +221,7 @@ public function setMinDepth($minDepth)
      */
     public function cloneVar($var, $filter = 0)
     {
-        $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) {
+        $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) {
             if (E_RECOVERABLE_ERROR === $type || E_USER_ERROR === $type) {
                 // Cloner never dies
                 throw new \ErrorException($msg, 0, $type, $file, $line);
@@ -278,7 +278,7 @@ protected function castObject(Stub $stub, $isNested)
             list($i, $parents, $hasDebugInfo) = $this->classInfo[$class];
         } else {
             $i = 2;
-            $parents = array(strtolower($class));
+            $parents = [strtolower($class)];
             $hasDebugInfo = method_exists($class, '__debugInfo');
 
             foreach (class_parents($class) as $p) {
@@ -291,7 +291,7 @@ protected function castObject(Stub $stub, $isNested)
             }
             $parents[] = '*';
 
-            $this->classInfo[$class] = array($i, $parents, $hasDebugInfo);
+            $this->classInfo[$class] = [$i, $parents, $hasDebugInfo];
         }
 
         $a = Caster::castObject($obj, $class, $hasDebugInfo);
@@ -305,7 +305,7 @@ protected function castObject(Stub $stub, $isNested)
                 }
             }
         } catch (\Exception $e) {
-            $a = array((Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)) + $a;
+            $a = [(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)] + $a;
         }
 
         return $a;
@@ -321,7 +321,7 @@ protected function castObject(Stub $stub, $isNested)
      */
     protected function castResource(Stub $stub, $isNested)
     {
-        $a = array();
+        $a = [];
         $res = $stub->value;
         $type = $stub->class;
 
@@ -332,7 +332,7 @@ protected function castResource(Stub $stub, $isNested)
                 }
             }
         } catch (\Exception $e) {
-            $a = array((Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)) + $a;
+            $a = [(Stub::TYPE_OBJECT === $stub->type ? Caster::PREFIX_VIRTUAL : '').'⚠' => new ThrowingCasterException($e)] + $a;
         }
 
         return $a;
diff --git a/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php b/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
index e15a2b644e54..03502bbd8f21 100644
--- a/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
+++ b/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
@@ -23,8 +23,8 @@ class HtmlDumper extends CliDumper
 {
     public static $defaultOutput = 'php://output';
 
-    protected static $themes = array(
-        'dark' => array(
+    protected static $themes = [
+        'dark' => [
             'default' => 'background-color:#18171B; color:#FF8400; line-height:1.2em; font:12px Menlo, Monaco, Consolas, monospace; word-wrap: break-word; white-space: pre-wrap; position:relative; z-index:99999; word-break: break-all',
             'num' => 'font-weight:bold; color:#1299DA',
             'const' => 'font-weight:bold',
@@ -39,8 +39,8 @@ class HtmlDumper extends CliDumper
             'index' => 'color:#1299DA',
             'ellipsis' => 'color:#FF8400',
             'ns' => 'user-select:none;',
-        ),
-        'light' => array(
+        ],
+        'light' => [
             'default' => 'background:none; color:#CC7832; line-height:1.2em; font:12px Menlo, Monaco, Consolas, monospace; word-wrap: break-word; white-space: pre-wrap; position:relative; z-index:99999; word-break: break-all',
             'num' => 'font-weight:bold; color:#1299DA',
             'const' => 'font-weight:bold',
@@ -55,8 +55,8 @@ class HtmlDumper extends CliDumper
             'index' => 'color:#1299DA',
             'ellipsis' => 'color:#CC7832',
             'ns' => 'user-select:none;',
-        ),
-    );
+        ],
+    ];
 
     protected $dumpHeader;
     protected $dumpPrefix = '<pre class=sf-dump id=%s data-indent-pad="%s">';
@@ -67,12 +67,12 @@ class HtmlDumper extends CliDumper
     protected $lastDepth = -1;
     protected $styles;
 
-    private $displayOptions = array(
+    private $displayOptions = [
         'maxDepth' => 1,
         'maxStringLength' => 160,
         'fileLinkFormat' => null,
-    );
-    private $extraDisplayOptions = array();
+    ];
+    private $extraDisplayOptions = [];
 
     /**
      * {@inheritdoc}
@@ -139,7 +139,7 @@ public function setDumpBoundaries($prefix, $suffix)
     /**
      * {@inheritdoc}
      */
-    public function dump(Data $data, $output = null, array $extraDisplayOptions = array())
+    public function dump(Data $data, $output = null, array $extraDisplayOptions = [])
     {
         $this->extraDisplayOptions = $extraDisplayOptions;
         $result = parent::dump($data, $output);
@@ -819,7 +819,7 @@ public function leaveHash(Cursor $cursor, $type, $class, $hasChild, $cut)
     /**
      * {@inheritdoc}
      */
-    protected function style($style, $value, $attr = array())
+    protected function style($style, $value, $attr = [])
     {
         if ('' === $value) {
             return '';
@@ -919,7 +919,7 @@ protected function dumpLine($depth, $endOfValue = false)
         }
 
         if (-1 === $depth) {
-            $args = array('"'.$this->dumpId.'"');
+            $args = ['"'.$this->dumpId.'"'];
             if ($this->extraDisplayOptions) {
                 $args[] = json_encode($this->extraDisplayOptions, JSON_FORCE_OBJECT);
             }
@@ -941,7 +941,7 @@ private function getSourceLink($file, $line)
         $options = $this->extraDisplayOptions + $this->displayOptions;
 
         if ($fmt = $options['fileLinkFormat']) {
-            return \is_string($fmt) ? strtr($fmt, array('%f' => $file, '%l' => $line)) : $fmt->format($file, $line);
+            return \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line);
         }
 
         return false;
diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/StubCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/StubCasterTest.php
index 26c276ad557f..8056f703b60b 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/StubCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/StubCasterTest.php
@@ -192,14 +192,14 @@ public function testClassStubWithNotExistingMethod()
 
     public function testClassStubWithAnonymousClass()
     {
-        $var = array(new ClassStub(\get_class(new class() extends \Exception {
-        })));
+        $var = [new ClassStub(\get_class(new class() extends \Exception {
+        }))];
 
         $cloner = new VarCloner();
         $dumper = new HtmlDumper();
         $dumper->setDumpHeader('<foo></foo>');
         $dumper->setDumpBoundaries('<bar>', '</bar>');
-        $dump = $dumper->dump($cloner->cloneVar($var), true, array('fileLinkFormat' => '%f:%l'));
+        $dump = $dumper->dump($cloner->cloneVar($var), true, ['fileLinkFormat' => '%f:%l']);
 
         $expectedDump = <<<'EODUMP'
 <foo></foo><bar><span class=sf-dump-note>array:1</span> [<samp>
diff --git a/src/Symfony/Component/VarDumper/VarDumper.php b/src/Symfony/Component/VarDumper/VarDumper.php
index 7c302a21ff91..4271e63965d6 100644
--- a/src/Symfony/Component/VarDumper/VarDumper.php
+++ b/src/Symfony/Component/VarDumper/VarDumper.php
@@ -33,7 +33,7 @@ public static function dump($var)
             if (isset($_SERVER['VAR_DUMPER_FORMAT'])) {
                 $dumper = 'html' === $_SERVER['VAR_DUMPER_FORMAT'] ? new HtmlDumper() : new CliDumper();
             } else {
-                $dumper = \in_array(\PHP_SAPI, array('cli', 'phpdbg')) ? new CliDumper() : new HtmlDumper();
+                $dumper = \in_array(\PHP_SAPI, ['cli', 'phpdbg']) ? new CliDumper() : new HtmlDumper();
             }
 
             self::$handler = function ($var) use ($cloner, $dumper) {
diff --git a/src/Symfony/Component/VarExporter/Instantiator.php b/src/Symfony/Component/VarExporter/Instantiator.php
index 0061d76e7842..7eefc3c2d282 100644
--- a/src/Symfony/Component/VarExporter/Instantiator.php
+++ b/src/Symfony/Component/VarExporter/Instantiator.php
@@ -57,20 +57,20 @@ final class Instantiator
      *
      * @throws ExceptionInterface When the instance cannot be created
      */
-    public static function instantiate(string $class, array $properties = array(), array $privateProperties = array())
+    public static function instantiate(string $class, array $properties = [], array $privateProperties = [])
     {
         $reflector = Registry::$reflectors[$class] ?? Registry::getClassReflector($class);
 
         if (Registry::$cloneable[$class]) {
-            $wrappedInstance = array(clone Registry::$prototypes[$class]);
+            $wrappedInstance = [clone Registry::$prototypes[$class]];
         } elseif (Registry::$instantiableWithoutConstructor[$class]) {
-            $wrappedInstance = array($reflector->newInstanceWithoutConstructor());
+            $wrappedInstance = [$reflector->newInstanceWithoutConstructor()];
         } elseif (null === Registry::$prototypes[$class]) {
             throw new NotInstantiableTypeException($class);
         } elseif ($reflector->implementsInterface('Serializable')) {
-            $wrappedInstance = array(unserialize('C:'.\strlen($class).':"'.$class.'":0:{}'));
+            $wrappedInstance = [unserialize('C:'.\strlen($class).':"'.$class.'":0:{}')];
         } else {
-            $wrappedInstance = array(unserialize('O:'.\strlen($class).':"'.$class.'":0:{}'));
+            $wrappedInstance = [unserialize('O:'.\strlen($class).':"'.$class.'":0:{}')];
         }
 
         if ($properties) {
@@ -84,7 +84,7 @@ public static function instantiate(string $class, array $properties = array(), a
             foreach ($properties as $name => $value) {
                 // because they're also used for "unserialization", hydrators
                 // deal with array of instances, so we need to wrap values
-                $properties[$name] = array($value);
+                $properties[$name] = [$value];
             }
             (Hydrator::$hydrators[$class] ?? Hydrator::getHydrator($class))($properties, $wrappedInstance);
         }
diff --git a/src/Symfony/Component/VarExporter/Internal/Exporter.php b/src/Symfony/Component/VarExporter/Internal/Exporter.php
index 38a8e250881f..fae9084ca040 100644
--- a/src/Symfony/Component/VarExporter/Internal/Exporter.php
+++ b/src/Symfony/Component/VarExporter/Internal/Exporter.php
@@ -53,7 +53,7 @@ public static function prepare($values, $objectsPool, &$refsPool, &$objectsCount
                     ++$value->count;
                     continue;
                 }
-                $refsPool[] = array(&$refs[$k], $value, &$value);
+                $refsPool[] = [&$refs[$k], $value, &$value];
                 $refs[$k] = $values[$k] = new Reference(-\count($refsPool), $value);
             }
 
@@ -74,7 +74,7 @@ public static function prepare($values, $objectsPool, &$refsPool, &$objectsCount
             }
 
             $class = \get_class($value);
-            $properties = array();
+            $properties = [];
             $sleep = null;
             $arrayValue = (array) $value;
             $reflector = Registry::$reflectors[$class] ?? Registry::getClassReflector($class);
@@ -94,10 +94,10 @@ public static function prepare($values, $objectsPool, &$refsPool, &$objectsCount
                     $properties[] = $v;
                     $properties[] = $value[$v];
                 }
-                $properties = array('SplObjectStorage' => array("\0" => $properties));
+                $properties = ['SplObjectStorage' => ["\0" => $properties]];
             } elseif ($value instanceof \Serializable || $value instanceof \__PHP_Incomplete_Class) {
                 ++$objectsCount;
-                $objectsPool[$value] = array($id = \count($objectsPool), serialize($value), array(), 0);
+                $objectsPool[$value] = [$id = \count($objectsPool), serialize($value), [], 0];
                 $value = new Reference($id);
                 goto handle_value;
             }
@@ -154,10 +154,10 @@ public static function prepare($values, $objectsPool, &$refsPool, &$objectsCount
                 }
             }
 
-            $objectsPool[$value] = array($id = \count($objectsPool));
+            $objectsPool[$value] = [$id = \count($objectsPool)];
             $properties = self::prepare($properties, $objectsPool, $refsPool, $objectsCount, $valueIsStatic);
             ++$objectsCount;
-            $objectsPool[$value] = array($id, $class, $properties, \method_exists($class, '__wakeup') ? $objectsCount : 0);
+            $objectsPool[$value] = [$id, $class, $properties, \method_exists($class, '__wakeup') ? $objectsCount : 0];
 
             $value = new Reference($id);
 
@@ -177,7 +177,7 @@ public static function export($value, $indent = '')
     {
         switch (true) {
             case \is_int($value) || \is_float($value): return var_export($value, true);
-            case array() === $value: return '[]';
+            case [] === $value: return '[]';
             case false === $value: return 'false';
             case true === $value: return 'true';
             case null === $value: return 'null';
@@ -201,11 +201,11 @@ public static function export($value, $indent = '')
             $code = var_export($value, true);
 
             if (false !== strpos($value, "\n") || false !== strpos($value, "\r")) {
-                $code = strtr($code, array(
+                $code = strtr($code, [
                     "\r\n" => "'.\"\\r\\n\"\n".$subIndent.".'",
                     "\r" => "'.\"\\r\"\n".$subIndent.".'",
                     "\n" => "'.\"\\n\"\n".$subIndent.".'",
-                ));
+                ]);
             }
 
             if (false !== strpos($value, "\0")) {
@@ -264,8 +264,8 @@ public static function export($value, $indent = '')
     private static function exportRegistry(Registry $value, string $indent, string $subIndent): string
     {
         $code = '';
-        $serializables = array();
-        $seen = array();
+        $serializables = [];
+        $seen = [];
         $prototypesAccess = 0;
         $factoriesAccess = 0;
         $r = '\\'.Registry::class;
@@ -340,13 +340,13 @@ private static function exportHydrator(Hydrator $value, string $indent, string $
             $code .= $subIndent.'    '.self::export($class).' => '.self::export($properties, $subIndent.'    ').",\n";
         }
 
-        $code = array(
+        $code = [
             self::export($value->registry, $subIndent),
             self::export($value->values, $subIndent),
             '' !== $code ? "[\n".$code.$subIndent.']' : '[]',
             self::export($value->value, $subIndent),
             self::export($value->wakeups, $subIndent),
-        );
+        ];
 
         return '\\'.\get_class($value)."::hydrate(\n".$subIndent.implode(",\n".$subIndent, $code)."\n".$indent.')';
     }
@@ -360,11 +360,11 @@ private static function getArrayObjectProperties($value, array &$arrayValue, $pr
         $reflector = $value instanceof \ArrayIterator ? 'ArrayIterator' : 'ArrayObject';
         $reflector = Registry::$reflectors[$reflector] ?? Registry::getClassReflector($reflector);
 
-        $properties = array(
+        $properties = [
             $arrayValue,
             $reflector->getMethod('getFlags')->invoke($value),
             $value instanceof \ArrayObject ? $reflector->getMethod('getIteratorClass')->invoke($value) : 'ArrayIterator',
-        );
+        ];
 
         $reflector = $reflector->getMethod('setFlags');
         $reflector->invoke($proto, \ArrayObject::STD_PROP_LIST);
@@ -378,13 +378,13 @@ private static function getArrayObjectProperties($value, array &$arrayValue, $pr
         }
         $reflector->invoke($value, $properties[1]);
 
-        if (array(array(), 0, 'ArrayIterator') === $properties) {
-            $properties = array();
+        if ([[], 0, 'ArrayIterator'] === $properties) {
+            $properties = [];
         } else {
             if ('ArrayIterator' === $properties[2]) {
                 unset($properties[2]);
             }
-            $properties = array($reflector->class => array("\0" => $properties));
+            $properties = [$reflector->class => ["\0" => $properties]];
         }
 
         return $properties;
diff --git a/src/Symfony/Component/VarExporter/Internal/Hydrator.php b/src/Symfony/Component/VarExporter/Internal/Hydrator.php
index a1a60112d9a9..07721df42877 100644
--- a/src/Symfony/Component/VarExporter/Internal/Hydrator.php
+++ b/src/Symfony/Component/VarExporter/Internal/Hydrator.php
@@ -20,7 +20,7 @@
  */
 class Hydrator
 {
-    public static $hydrators = array();
+    public static $hydrators = [];
 
     public $registry;
     public $values;
@@ -77,7 +77,7 @@ public static function getHydrator($class)
         switch ($class) {
             case 'ArrayIterator':
             case 'ArrayObject':
-                $constructor = \Closure::fromCallable(array($classReflector->getConstructor(), 'invokeArgs'));
+                $constructor = \Closure::fromCallable([$classReflector->getConstructor(), 'invokeArgs']);
 
                 return self::$hydrators[$class] = static function ($properties, $objects) use ($constructor) {
             
10000
        foreach ($properties as $name => $values) {
@@ -87,7 +87,7 @@ public static function getHydrator($class)
                             }
                         }
                     }
-                    foreach ($properties["\0"] ?? array() as $i => $v) {
+                    foreach ($properties["\0"] ?? [] as $i => $v) {
                         $constructor($objects[$i], $v);
                     }
                 };
@@ -118,11 +118,11 @@ public static function getHydrator($class)
                 };
         }
 
-        $propertySetters = array();
+        $propertySetters = [];
         foreach ($classReflector->getProperties() as $propertyReflector) {
             if (!$propertyReflector->isStatic()) {
                 $propertyReflector->setAccessible(true);
-                $propertySetters[$propertyReflector->name] = \Closure::fromCallable(array($propertyReflector, 'setValue'));
+                $propertySetters[$propertyReflector->name] = \Closure::fromCallable([$propertyReflector, 'setValue']);
             }
         }
 
diff --git a/src/Symfony/Component/VarExporter/Internal/Registry.php b/src/Symfony/Component/VarExporter/Internal/Registry.php
index 705722650af1..629836b00bc0 100644
--- a/src/Symfony/Component/VarExporter/Internal/Registry.php
+++ b/src/Symfony/Component/VarExporter/Internal/Registry.php
@@ -21,11 +21,11 @@
  */
 class Registry
 {
-    public static $reflectors = array();
-    public static $prototypes = array();
-    public static $factories = array();
-    public static $cloneable = array();
-    public static $instantiableWithoutConstructor = array();
+    public static $reflectors = [];
+    public static $prototypes = [];
+    public static $factories = [];
+    public static $cloneable = [];
+    public static $instantiableWithoutConstructor = [];
 
     public function __construct(array $classes)
     {
@@ -60,7 +60,7 @@ public static function f($class)
     {
         $reflector = self::$reflectors[$class] ?? self::getClassReflector($class, true, false);
 
-        return self::$factories[$class] = \Closure::fromCallable(array($reflector, 'newInstanceWithoutConstructor'));
+        return self::$factories[$class] = \Closure::fromCallable([$reflector, 'newInstanceWithoutConstructor']);
     }
 
     public static function getClassReflector($class, $instantiableWithoutConstructor = false, $cloneable = null)
@@ -118,17 +118,17 @@ public static function getClassReflector($class, $instantiableWithoutConstructor
             static $setTrace;
 
             if (null === $setTrace) {
-                $setTrace = array(
+                $setTrace = [
                     new \ReflectionProperty(\Error::class, 'trace'),
                     new \ReflectionProperty(\Exception::class, 'trace'),
-                );
+                ];
                 $setTrace[0]->setAccessible(true);
                 $setTrace[1]->setAccessible(true);
-                $setTrace[0] = \Closure::fromCallable(array($setTrace[0], 'setValue'));
-                $setTrace[1] = \Closure::fromCallable(array($setTrace[1], 'setValue'));
+                $setTrace[0] = \Closure::fromCallable([$setTrace[0], 'setValue']);
+                $setTrace[1] = \Closure::fromCallable([$setTrace[1], 'setValue']);
             }
 
-            $setTrace[$proto instanceof \Exception]($proto, array());
+            $setTrace[$proto instanceof \Exception]($proto, []);
         }
 
         return self::$reflectors[$class] = $reflector;
diff --git a/src/Symfony/Component/VarExporter/Tests/InstantiatorTest.php b/src/Symfony/Component/VarExporter/Tests/InstantiatorTest.php
index 2cb8e7a359d3..cae10e3b44d0 100644
--- a/src/Symfony/Component/VarExporter/Tests/InstantiatorTest.php
+++ b/src/Symfony/Component/VarExporter/Tests/InstantiatorTest.php
@@ -37,30 +37,30 @@ public function testFailingInstantiation(string $class)
 
     public function provideFailingInstantiation()
     {
-        yield array('ReflectionClass');
-        yield array('SplHeap');
-        yield array('Throwable');
-        yield array('Closure');
-        yield array('SplFileInfo');
+        yield ['ReflectionClass'];
+        yield ['SplHeap'];
+        yield ['Throwable'];
+        yield ['Closure'];
+        yield ['SplFileInfo'];
     }
 
     public function testInstantiate()
     {
-        $this->assertEquals((object) array('p' => 123), Instantiator::instantiate('stdClass', array('p' => 123)));
-        $this->assertEquals((object) array('p' => 123), Instantiator::instantiate('STDcLASS', array('p' => 123)));
-        $this->assertEquals(new \ArrayObject(array(123)), Instantiator::instantiate(\ArrayObject::class, array("\0" => array(array(123)))));
+        $this->assertEquals((object) ['p' => 123], Instantiator::instantiate('stdClass', ['p' => 123]));
+        $this->assertEquals((object) ['p' => 123], Instantiator::instantiate('STDcLASS', ['p' => 123]));
+        $this->assertEquals(new \ArrayObject([123]), Instantiator::instantiate(\ArrayObject::class, ["\0" => [[123]]]));
 
-        $expected = array(
+        $expected = [
             "\0".__NAMESPACE__."\Bar\0priv" => 123,
             "\0".__NAMESPACE__."\Foo\0priv" => 234,
-        );
+        ];
 
-        $this->assertSame($expected, (array) Instantiator::instantiate(Bar::class, array('priv' => 123), array(Foo::class => array('priv' => 234))));
+        $this->assertSame($expected, (array) Instantiator::instantiate(Bar::class, ['priv' => 123], [Foo::class => ['priv' => 234]]));
 
-        $e = Instantiator::instantiate('Exception', array('foo' => 123, 'trace' => array(234)));
+        $e = Instantiator::instantiate('Exception', ['foo' => 123, 'trace' => [234]]);
 
         $this->assertSame(123, $e->foo);
-        $this->assertSame(array(234), $e->getTrace());
+        $this->assertSame([234], $e->getTrace());
     }
 }
 
diff --git a/src/Symfony/Component/VarExporter/Tests/VarExporterTest.php b/src/Symfony/Component/VarExporter/Tests/VarExporterTest.php
index c34a7e4fb734..5bb03d8ce1fc 100644
--- a/src/Symfony/Component/VarExporter/Tests/VarExporterTest.php
+++ b/src/Symfony/Component/VarExporter/Tests/VarExporterTest.php
@@ -28,7 +28,7 @@ public function testPhpIncompleteClassesAreForbidden()
     {
         $unserializeCallback = ini_set('unserialize_callback_func', 'var_dump');
         try {
-            Registry::unserialize(array(), array('O:20:"SomeNotExistingClass":0:{}'));
+            Registry::unserialize([], ['O:20:"SomeNotExistingClass":0:{}']);
         } finally {
             $this->assertSame('var_dump', ini_set('unserialize_callback_func', $unserializeCallback));
         }
@@ -51,25 +51,25 @@ public function testFailingSerialization($value)
 
     public function provideFailingSerialization()
     {
-        yield array(hash_init('md5'));
-        yield array(new \ReflectionClass('stdClass'));
-        yield array((new \ReflectionFunction(function (): int {}))->getReturnType());
-        yield array(new \ReflectionGenerator((function () { yield 123; })()));
-        yield array(function () {});
-        yield array(function () { yield 123; });
-        yield array(new \SplFileInfo(__FILE__));
-        yield array($h = fopen(__FILE__, 'r'));
-        yield array(array($h));
+        yield [hash_init('md5')];
+        yield [new \ReflectionClass('stdClass')];
+        yield [(new \ReflectionFunction(function (): int {}))->getReturnType()];
+        yield [new \ReflectionGenerator((function () { yield 123; })())];
+        yield [function () {}];
+        yield [function () { yield 123; }];
+        yield [new \SplFileInfo(__FILE__)];
+        yield [$h = fopen(__FILE__, 'r')];
+        yield [[$h]];
 
         $a = new class() {
         };
 
-        yield array($a);
+        yield [$a];
 
-        $a = array(null, $h);
+        $a = [null, $h];
         $a[0] = &$a;
 
-        yield array($a);
+        yield [$a];
     }
 
     /**
@@ -108,26 +108,26 @@ public function testExport(string $testName, $value, bool $staticValueExpected =
 
     public function provideExport()
     {
-        yield array('multiline-string', array("\0\0\r\nA" => "B\rC\n\n"), true);
+        yield ['multiline-string', ["\0\0\r\nA" => "B\rC\n\n"], true];
 
-        yield array('bool', true, true);
-        yield array('simple-array', array(123, array('abc')), true);
-        yield array('partially-indexed-array', array(5 => true, 1 => true, 2 => true, 6 => true), true);
-        yield array('datetime', \DateTime::createFromFormat('U', 0));
+        yield ['bool', true, true];
+        yield ['simple-array', [123, ['abc']], true];
+        yield ['partially-indexed-array', [5 => true, 1 => true, 2 => true, 6 => true], true];
+        yield ['datetime', \DateTime::createFromFormat('U', 0)];
 
         $value = new \ArrayObject();
         $value[0] = 1;
         $value->foo = new \ArrayObject();
         $value[1] = $value;
 
-        yield array('array-object', $value);
+        yield ['array-object', $value];
 
-        yield array('array-iterator', new \ArrayIterator(array(123), 1));
-        yield array('array-object-custom', new MyArrayObject(array(234)));
+        yield ['array-iterator', new \ArrayIterator([123], 1)];
+        yield ['array-object-custom', new MyArrayObject([234])];
 
         $value = new MySerializable();
 
-        yield array('serializable', array($value, $value));
+        yield ['serializable', [$value, $value]];
 
         $value = new MyWakeup();
         $value->sub = new MyWakeup();
@@ -135,33 +135,33 @@ public function provideExport()
         $value->sub->bis = 123;
         $value->sub->baz = 123;
 
-        yield array('wakeup', $value);
+        yield ['wakeup', $value];
 
-        yield array('clone', array(new MyCloneable(), new MyNotCloneable()));
+        yield ['clone', [new MyCloneable(), new MyNotCloneable()]];
 
-        yield array('private', array(new MyPrivateValue(123, 234), new MyPrivateChildValue(123, 234)));
+        yield ['private', [new MyPrivateValue(123, 234), new MyPrivateChildValue(123, 234)]];
 
         $value = new \SplObjectStorage();
         $value[new \stdClass()] = 345;
 
-        yield array('spl-object-storage', $value);
+        yield ['spl-object-storage', $value];
 
-        yield array('incomplete-class', unserialize('O:20:"SomeNotExistingClass":0:{}'));
+        yield ['incomplete-class', unserialize('O:20:"SomeNotExistingClass":0:{}')];
 
-        $value = array((object) array());
+        $value = [(object) []];
         $value[1] = &$value[0];
         $value[2] = $value[0];
 
-        yield array('hard-references', $value);
+        yield ['hard-references', $value];
 
-        $value = array();
+        $value = [];
         $value[0] = &$value;
 
-        yield array('hard-references-recursive', $value);
+        yield ['hard-references-recursive', $value];
 
-        static $value = array(123);
+        static $value = [123];
 
-        yield array('external-references', array(&$value), true);
+        yield ['external-references', [&$value], true];
 
         unset($value);
 
@@ -169,34 +169,34 @@ public function provideExport()
 
         $rt = new \ReflectionProperty('Error', 'trace');
         $rt->setAccessible(true);
-        $rt->setValue($value, array('file' => __FILE__, 'line' => 123));
+        $rt->setValue($value, ['file' => __FILE__, 'line' => 123]);
 
         $rl = new \ReflectionProperty('Error', 'line');
         $rl->setAccessible(true);
         $rl->setValue($value, 234);
 
-        yield array('error', $value);
+        yield ['error', $value];
 
-        yield array('var-on-sleep', new GoodNight());
+        yield ['var-on-sleep', new GoodNight()];
 
         $value = new FinalError(false);
-        $rt->setValue($value, array());
+        $rt->setValue($value, []);
         $rl->setValue($value, 123);
 
-        yield array('final-error', $value);
+        yield ['final-error', $value];
 
-        yield array('final-array-iterator', new FinalArrayIterator());
+        yield ['final-array-iterator', new FinalArrayIterator()];
 
-        yield array('final-stdclass', new FinalStdClass());
+        yield ['final-stdclass', new FinalStdClass()];
 
         $value = new MyWakeup();
         $value->bis = new \ReflectionClass($value);
 
-        yield array('wakeup-refl', $value);
+        yield ['wakeup-refl', $value];
 
-        yield array('abstract-parent', new ConcreteClass());
+        yield ['abstract-parent', new ConcreteClass()];
 
-        yield array('foo-serializable', new FooSerializable('bar'));
+        yield ['foo-serializable', new FooSerializable('bar')];
     }
 }
 
@@ -222,7 +222,7 @@ class MyWakeup
 
     public function __sleep()
     {
-        return array('sub', 'baz');
+        return ['sub', 'baz'];
     }
 
     public function __wakeup()
@@ -287,7 +287,7 @@ public function __sleep()
     {
         $this->good = 'night';
 
-        return array('good');
+        return ['good'];
     }
 }
 
@@ -305,7 +305,7 @@ final class FinalArrayIterator extends \ArrayIterator
 {
     public function serialize()
     {
-        return serialize(array(123, parent::serialize()));
+        return serialize([123, parent::serialize()]);
     }
 
     public function unserialize($data)
@@ -362,7 +362,7 @@ public function getFoo(): string
 
     public function serialize(): string
     {
-        return serialize(array($this->getFoo()));
+        return serialize([$this->getFoo()]);
     }
 
     public function unserialize($str)
diff --git a/src/Symfony/Component/VarExporter/VarExporter.php b/src/Symfony/Component/VarExporter/VarExporter.php
index ffe44a3db131..45ef7446b12c 100644
--- a/src/Symfony/Component/VarExporter/VarExporter.php
+++ b/src/Symfony/Component/VarExporter/VarExporter.php
@@ -48,13 +48,13 @@ public static function export($value, bool &$isStaticValue = null): string
         }
 
         $objectsPool = new \SplObjectStorage();
-        $refsPool = array();
+        $refsPool = [];
         $objectsCount = 0;
 
         try {
-            $value = Exporter::prepare(array($value), $objectsPool, $refsPool, $objectsCount, $isStaticValue)[0];
+            $value = Exporter::prepare([$value], $objectsPool, $refsPool, $objectsCount, $isStaticValue)[0];
         } finally {
-            $references = array();
+            $references = [];
             foreach ($refsPool as $i => $v) {
                 if ($v[0]->count) {
                     $references[1 + $i] = $v[2];
@@ -67,9 +67,9 @@ public static function export($value, bool &$isStaticValue = null): string
             return Exporter::export($value);
         }
 
-        $classes = array();
-        $values = array();
-        $wakeups = array();
+        $classes = [];
+        $values = [];
+        $wakeups = [];
         foreach ($objectsPool as $i => $v) {
             list(, $classes[], $values[], $wakeup) = $objectsPool[$v];
             if ($wakeup) {
@@ -78,7 +78,7 @@ public static function export($value, bool &$isStaticValue = null): string
         }
         ksort($wakeups);
 
-        $properties = array();
+        $properties = [];
         foreach ($values as $i => $vars) {
             foreach ($vars as $class => $values) {
                 foreach ($values as $name => $v) {
diff --git a/src/Symfony/Component/Workflow/Dumper/GraphvizDumper.php b/src/Symfony/Component/Workflow/Dumper/GraphvizDumper.php
index b7c7d8fd4f30..f8c0fa545742 100644
--- a/src/Symfony/Component/Workflow/Dumper/GraphvizDumper.php
+++ b/src/Symfony/Component/Workflow/Dumper/GraphvizDumper.php
@@ -26,11 +26,11 @@
  */
 class GraphvizDumper implements DumperInterface
 {
-    protected static $defaultOptions = array(
-        'graph' => array('ratio' => 'compress', 'rankdir' => 'LR'),
-        'node' => array('fontsize' => 9, 'fontname' => 'Arial', 'color' => '#333333', 'fillcolor' => 'lightblue', 'fixedsize' => 'false', 'width' => 1),
-        'edge' => array('fontsize' => 9, 'fontname' => 'Arial', 'color' => '#333333', 'arrowhead' => 'normal', 'arrowsize' => 0.5),
-    );
+    protected static $defaultOptions = [
+        'graph' => ['ratio' => 'compress', 'rankdir' => 'LR'],
+        'node' => ['fontsize' => 9, 'fontname' => 'Arial', 'color' => '#333333', 'fillcolor' => 'lightblue', 'fixedsize' => 'false', 'width' => 1],
+        'edge' => ['fontsize' => 9, 'fontname' => 'Arial', 'color' => '#333333', 'arrowhead' => 'normal', 'arrowsize' => 0.5],
+    ];
 
     /**
      * {@inheritdoc}
@@ -43,7 +43,7 @@ class GraphvizDumper implements DumperInterface
      *  * node: The default options for nodes (places + transitions)
      *  * edge: The default options for edges
      */
-    public function dump(Definition $definition, Marking $marking = null, array $options = array())
+    public function dump(Definition $definition, Marking $marking = null, array $options = [])
     {
         $places = $this->findPlaces($definition, $marking);
         $transitions = $this->findTransitions($definition);
@@ -63,10 +63,10 @@ public function dump(Definition $definition, Marking $marking = null, array $opt
      */
     protected function findPlaces(Definition $definition, Marking $marking = null)
     {
-        $places = array();
+        $places = [];
 
         foreach ($definition->getPlaces() as $place) {
-            $attributes = array();
+            $attributes = [];
             if ($place === $definition->getInitialPlace()) {
                 $attributes['style'] = 'filled';
             }
@@ -74,9 +74,9 @@ protected function findPlaces(Definition $definition, Marking $marking = null)
                 $attributes['color'] = '#FF0000';
                 $attributes['shape'] = 'doublecircle';
             }
-            $places[$place] = array(
+            $places[$place] = [
                 'attributes' => $attributes,
-            );
+            ];
         }
 
         return $places;
@@ -87,13 +87,13 @@ protected function findPlaces(Definition $definition, Marking $marking = null)
      */
     protected function findTransitions(Definition $definition)
     {
-        $transitions = array();
+        $transitions = [];
 
         foreach ($definition->getTransitions() as $transition) {
-            $transitions[] = array(
-                'attributes' => array('shape' => 'box', 'regular' => true),
+            $transitions[] = [
+                'attributes' => ['shape' => 'box', 'regular' => true],
                 'name' => $transition->getName(),
-            );
+            ];
         }
 
         return $transitions;
@@ -132,22 +132,22 @@ protected function addTransitions(array $transitions)
      */
     protected function findEdges(Definition $definition)
     {
-        $dotEdges = array();
+        $dotEdges = [];
 
         foreach ($definition->getTransitions() as $transition) {
             foreach ($transition->getFroms() as $from) {
-                $dotEdges[] = array(
+                $dotEdges[] = [
                     'from' => $from,
                     'to' => $transition->getName(),
                     'direction' => 'from',
-                );
+                ];
             }
             foreach ($transition->getTos() as $to) {
-                $dotEdges[] = array(
+                $dotEdges[] = [
                     'from' => $transition->getName(),
                     'to' => $to,
                     'direction' => 'to',
-                );
+                ];
             }
         }
 
@@ -211,7 +211,7 @@ protected function escape(string $string): string
 
     private function addAttributes(array $attributes): string
     {
-        $code = array();
+        $code = [];
 
         foreach ($attributes as $k => $v) {
             $code[] = sprintf('%s="%s"', $k, $this->escape($v));
@@ -222,7 +222,7 @@ private function addAttributes(array $attributes): string
 
     private function addOptions(array $options): string
     {
-        $code = array();
+        $code = [];
 
         foreach ($options as $k => $v) {
             $code[] = sprintf('%s="%s"', $k, $v);
diff --git a/src/Symfony/Component/Yaml/Command/LintCommand.php b/src/Symfony/Component/Yaml/Command/LintCommand.php
index a8cdc318be1b..77d449cbf882 100644
--- a/src/Symfony/Component/Yaml/Command/LintCommand.php
+++ b/src/Symfony/Component/Yaml/Command/LintCommand.php
@@ -92,10 +92,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
             }
 
-            return $this->display($io, array($this->validate($stdin, $flags)));
+            return $this->display($io, [$this->validate($stdin, $flags)]);
         }
 
-        $filesInfo = array();
+        $filesInfo = [];
         foreach ($filenames as $filename) {
             if (!$this->isReadable($filename)) {
                 throw new RuntimeException(sprintf('File or directory "%s" is not readable.', $filename));
@@ -122,12 +122,12 @@ private function validate($content, $flags, $file = null)
         try {
             $this->getParser()->parse($content, Yaml::PARSE_CONSTANT | $flags);
         } catch (ParseException $e) {
-            return array('file' => $file, 'line' => $e->getParsedLine(), 'valid' => false, 'message' => $e->getMessage());
+            return ['file' => $file, 'line' => $e->getParsedLine(), 'valid' => false, 'message' => $e->getMessage()];
         } finally {
             restore_error_handler();
         }
 
-        return array('file' => $file, 'valid' => true);
+        return ['file' => $file, 'valid' => true];
     }
 
     private function display(SymfonyStyle $io, array $files)
@@ -191,7 +191,7 @@ private function getFiles($fileOrDirectory)
         }
 
         foreach ($this->getDirectoryIterator($fileOrDirectory) as $file) {
-            if (!\in_array($file->getExtension(), array('yml', 'yaml'))) {
+            if (!\in_array($file->getExtension(), ['yml', 'yaml'])) {
                 continue;
             }
 
diff --git a/src/Symfony/Component/Yaml/Parser.php b/src/Symfony/Component/Yaml/Parser.php
index 485c46b315ad..d63467084b89 100644
--- a/src/Symfony/Component/Yaml/Parser.php
+++ b/src/Symfony/Component/Yaml/Parser.php
@@ -659,7 +659,7 @@ private function parseValue(string $value, int $flags, string $context)
             return $this->refs[$value];
         }
 
-        if (\in_array($value[0], array('!', '|', '>'), true) && self::preg_match('/^(?:'.self::TAG_PATTERN.' +)?'.self::BLOCK_SCALAR_HEADER_PATTERN.'$/', $value, $matches)) {
+        if (\in_array($value[0], ['!', '|', '>'], true) && self::preg_match('/^(?:'.self::TAG_PATTERN.' +)?'.self::BLOCK_SCALAR_HEADER_PATTERN.'$/', $value, $matches)) {
             $modifiers = isset($matches['modifiers']) ? $matches['modifiers'] : '';
 
             $data = $this->parseBlockScalar($matches['separator'], preg_replace('#\d+#', '', $modifiers), (int) abs($modifiers));
diff --git a/src/Symfony/Component/Yaml/Tests/Command/LintCommandTest.php b/src/Symfony/Component/Yaml/Tests/Command/LintCommandTest.php
index c1e273648689..b0e1e26af53e 100644
--- a/src/Symfony/Component/Yaml/Tests/Command/LintCommandTest.php
+++ b/src/Symfony/Component/Yaml/Tests/Command/LintCommandTest.php
@@ -43,7 +43,7 @@ public function testLintCorrectFiles()
         $filename1 = $this->createFile('foo: bar');
         $filename2 = $this->createFile('bar: baz');
 
-        $ret = $tester->execute(array('filename' => array($filename1, $filename2)), array('verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false));
+        $ret = $tester->execute(['filename' => [$filename1, $filename2]], ['verbosity' => OutputInterface::VERBOSITY_VERBOSE, 'decorated' => false]);
 
         $this->assertEquals(0, $ret, 'Returns 0 in case of success');
         $this->assertRegExp('/^\/\/ OK in /', trim($tester->getDisplay()));
diff --git a/src/Symfony/Contracts/Cache/CacheTrait.php b/src/Symfony/Contracts/Cache/CacheTrait.php
index d82d96530b4c..918d5559b70c 100644
--- a/src/Symfony/Contracts/Cache/CacheTrait.php
+++ b/src/Symfony/Contracts/Cache/CacheTrait.php
@@ -46,7 +46,7 @@ private function doGet(CacheItemPoolInterface $pool, string $key, callable $call
 
         $item = $pool->getItem($key);
         $recompute = !$item->isHit() || INF === $beta;
-        $metadata = $item instanceof ItemInterface ? $item->getMetadata() : array();
+        $metadata = $item instanceof ItemInterface ? $item->getMetadata() : [];
 
         if (!$recompute && $metadata) {
             $expiry = $metadata[ItemInterface::METADATA_EXPIRY] ?? false;
diff --git a/src/Symfony/Contracts/Service/ServiceLocatorTrait.php b/src/Symfony/Contracts/Service/ServiceLocatorTrait.php
index 8ffa2b4f1027..eed44f5d33e7 100644
--- a/src/Symfony/Contracts/Service/ServiceLocatorTrait.php
+++ b/src/Symfony/Contracts/Service/ServiceLocatorTrait.php
@@ -23,7 +23,7 @@
 trait ServiceLocatorTrait
 {
     private $factories;
-    private $loading = array();
+    private $loading = [];
 
     /**
      * @param callable[] $factories
diff --git a/src/Symfony/Contracts/Service/ServiceSubscriberTrait.php b/src/Symfony/Contracts/Service/ServiceSubscriberTrait.php
index 457ffb26b74f..ceaef6fa14ba 100644
--- a/src/Symfony/Contracts/Service/ServiceSubscriberTrait.php
+++ b/src/Symfony/Contracts/Service/ServiceSubscriberTrait.php
@@ -32,7 +32,7 @@ public static function getSubscribedServices(): array
             return $services;
         }
 
-        $services = \is_callable(array('parent', __FUNCTION__)) ? parent::getSubscribedServices() : array();
+        $services = \is_callable(['parent', __FUNCTION__]) ? parent::getSubscribedServices() : [];
 
         foreach ((new \ReflectionClass(self::class))->getMethods() as $method) {
             if ($method->isStatic() || $method->isAbstract() || $method->isGenerator() || $method->isInternal() || $method->getNumberOfRequiredParameters()) {
@@ -54,7 +54,7 @@ public function setContainer(ContainerInterface $container)
     {
         $this->container = $container;
 
-        if (\is_callable(array('parent', __FUNCTION__))) {
+        if (\is_callable(['parent', __FUNCTION__])) {
             return parent::setContainer($container);
         }
     }
diff --git a/src/Symfony/Contracts/Tests/Cache/CacheTraitTest.php b/src/Symfony/Contracts/Tests/Cache/CacheTraitTest.php
index 5134a9339f6b..f77d103c9353 100644
--- a/src/Symfony/Contracts/Tests/Cache/CacheTraitTest.php
+++ b/src/Symfony/Contracts/Tests/Cache/CacheTraitTest.php
@@ -34,7 +34,7 @@ public function testSave()
             ->with('computed data');
 
         $cache = $this->getMockBuilder(TestPool::class)
-            ->setMethods(array('getItem', 'save'))
+            ->setMethods(['getItem', 'save'])
             ->getMock();
         $cache->expects($this->once())
             ->method('getItem')
@@ -60,7 +60,7 @@ public function testNoCallbackCallOnHit()
             ->method('set');
 
         $cache = $this->getMockBuilder(TestPool::class)
-            ->setMethods(array('getItem', 'save'))
+            ->setMethods(['getItem', 'save'])
             ->getMock();
 
         $cache->expects($this->once())
@@ -91,7 +91,7 @@ public function testRecomputeOnBetaInf()
             ->with('computed data');
 
         $cache = $this->getMockBuilder(TestPool::class)
-            ->setMethods(array('getItem', 'save'))
+            ->setMethods(['getItem', 'save'])
             ->getMock();
 
         $cache->expects($this->once())
@@ -111,7 +111,7 @@ public function testRecomputeOnBetaInf()
     public function testExceptionOnNegativeBeta()
     {
         $cache = $this->getMockBuilder(TestPool::class)
-            ->setMethods(array('getItem', 'save'))
+            ->setMethods(['getItem', 'save'])
             ->getMock();
 
         $callback = function (CacheItemInterface $item) {
@@ -135,7 +135,7 @@ public function deleteItem($key)
     {
     }
 
-    public function deleteItems(array $keys = array())
+    public function deleteItems(array $keys = [])
     {
     }
 
@@ -143,7 +143,7 @@ public function getItem($key)
     {
     }
 
-    public function getItems(array $key = array())
+    public function getItems(array $key = [])
     {
     }
 
diff --git a/src/Symfony/Contracts/Tests/Service/ServiceLocatorTest.php b/src/Symfony/Contracts/Tests/Service/ServiceLocatorTest.php
index 265af909dfa1..22487a899279 100644
--- a/src/Symfony/Contracts/Tests/Service/ServiceLocatorTest.php
+++ b/src/Symfony/Contracts/Tests/Service/ServiceLocatorTest.php
@@ -26,11 +26,11 @@ public function getServiceLocator(array $factories)
 
     public function testHas()
     {
-        $locator = $this->getServiceLocator(array(
+        $locator = $this->getServiceLocator([
             'foo' => function () { return 'bar'; },
             'bar' => function () { return 'baz'; },
             function () { return 'dummy'; },
-        ));
+        ]);
 
         $this->assertTrue($locator->has('foo'));
         $this->assertTrue($locator->has('bar'));
@@ -39,10 +39,10 @@ function () { return 'dummy'; },
 
     public function testGet()
     {
-        $locator = $this->getServiceLocator(array(
+        $locator = $this->getServiceLocator([
             'foo' => function () { return 'bar'; },
             'bar' => function () { return 'baz'; },
-        ));
+        ]);
 
         $this->assertSame('bar', $locator->get('foo'));
         $this->assertSame('baz', $locator->get('bar'));
@@ -51,13 +51,13 @@ public function testGet()
     public function testGetDoesNotMemoize()
     {
         $i = 0;
-        $locator = $this->getServiceLocator(array(
+        $locator = $this->getServiceLocator([
             'foo' => function () use (&$i) {
                 ++$i;
 
                 return 'bar';
             },
-        ));
+        ]);
 
         $this->assertSame('bar', $locator->get('foo'));
         $this->assertSame('bar', $locator->get('foo'));
@@ -70,9 +70,9 @@ public function testGetDoesNotMemoize()
      */
     public function testThrowsOnUndefinedInternalService()
     {
-        $locator = $this->getServiceLocator(array(
+        $locator = $this->getServiceLocator([
             'foo' => function () use (&$locator) { return $locator->get('bar'); },
-        ));
+        ]);
 
         $locator->get('foo');
     }
@@ -83,11 +83,11 @@ public function testThrowsOnUndefinedInternalService()
      */
     public function testThrowsOnCircularReference()
     {
-        $locator = $this->getServiceLocator(array(
+        $locator = $this->getServiceLocator([
             'foo' => function () use (&$locator) { return $locator->get('bar'); },
             'bar' => function () use (&$locator) { return $locator->get('baz'); },
             'baz' => function () use (&$locator) { return $locator->get('bar'); },
-        ));
+        ]);
 
         $locator->get('foo');
     }
diff --git a/src/Symfony/Contracts/Tests/Service/ServiceSubscriberTraitTest.php b/src/Symfony/Contracts/Tests/Service/ServiceSubscriberTraitTest.php
index c7742c65d4df..344bba8772dc 100644
--- a/src/Symfony/Contracts/Tests/Service/ServiceSubscriberTraitTest.php
+++ b/src/Symfony/Contracts/Tests/Service/ServiceSubscriberTraitTest.php
@@ -21,14 +21,14 @@ class ServiceSubscriberTraitTest extends TestCase
 {
     public function testMethodsOnParentsAndChildrenAreIgnoredInGetSubscribedServices()
     {
-        $expected = array(TestService::class.'::aService' => '?Symfony\Contracts\Tests\Service\Service2');
+        $expected = [TestService::class.'::aService' => '?Symfony\Contracts\Tests\Service\Service2'];
 
         $this->assertEquals($expected, ChildTestService::getSubscribedServices());
     }
 
     public function testSetContainerIsCalledOnParent()
     {
-        $container = new class(array()) implements ContainerInterface {
+        $container = new class([]) implements ContainerInterface {
             use ServiceLocatorTrait;
         };
 
diff --git a/src/Symfony/Contracts/Tests/Translation/TranslatorTest.php b/src/Symfony/Contracts/Tests/Translation/TranslatorTest.php
index a3b67dfe5eea..ac5f9c7aebe1 100644
--- a/src/Symfony/Contracts/Tests/Translation/TranslatorTest.php
+++ b/src/Symfony/Contracts/Tests/Translation/TranslatorTest.php
@@ -55,7 +55,7 @@ public function testTransChoiceWithExplicitLocale($expected, $id, $number)
         $translator = $this->getTranslator();
         $translator->setLocale('en');
 
-        $this->assertEquals($expected, $translator->trans($id, array('%count%' => $number)));
+        $this->assertEquals($expected, $translator->trans($id, ['%count%' => $number]));
     }
 
     /**
@@ -67,7 +67,7 @@ public function testTransChoiceWithDefaultLocale($expected, $id, $number)
 
         $translator = $this->getTranslator();
 
-        $this->assertEquals($expected, $translator->trans($id, array('%count%' => $number)));
+        $this->assertEquals($expected, $translator->trans($id, ['%count%' => $number]));
     }
 
     public function testGetSetLocale()
@@ -94,24 +94,24 @@ public function testGetLocaleReturnsDefaultLocaleIfNotSet()
 
     public function getTransTests()
     {
-        return array(
-            array('Symfony is great!', 'Symfony is great!', array()),
-            array('Symfony is awesome!', 'Symfony is %what%!', array('%what%' => 'awesome')),
-        );
+        return [
+            ['Symfony is great!', 'Symfony is great!', []],
+            ['Symfony is awesome!', 'Symfony is %what%!', ['%what%' => 'awesome']],
+        ];
     }
 
     public function getTransChoiceTests()
     {
-        return array(
-            array('There are no apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('There is one apple', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 1),
-            array('There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 10),
-            array('There are 0 apples', 'There is 1 apple|There are %count% apples', 0),
-            array('There is 1 apple', 'There is 1 apple|There are %count% apples', 1),
-            array('There are 10 apples', 'There is 1 apple|There are %count% apples', 10),
+        return [
+            ['There are no apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['There is one apple', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 1],
+            ['There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 10],
+            ['There are 0 apples', 'There is 1 apple|There are %count% apples', 0],
+            ['There is 1 apple', 'There is 1 apple|There are %count% apples', 1],
+            ['There are 10 apples', 'There is 1 apple|There are %count% apples', 10],
             // custom validation messages may be coded with a fixed value
-            array('There are 2 apples', 'There are 2 apples', 2),
-        );
+            ['There are 2 apples', 'There are 2 apples', 2],
+        ];
     }
 
     /**
@@ -121,22 +121,22 @@ public function testInterval($expected, $number, $interval)
     {
         $translator = $this->getTranslator();
 
-        $this->assertEquals($expected, $translator->trans($interval.' foo|[1,Inf[ bar', array('%count%' => $number)));
+        $this->assertEquals($expected, $translator->trans($interval.' foo|[1,Inf[ bar', ['%count%' => $number]));
     }
 
     public function getInternal()
     {
-        return array(
-            array('foo', 3, '{1,2, 3 ,4}'),
-            array('bar', 10, '{1,2, 3 ,4}'),
-            array('bar', 3, '[1,2]'),
-            array('foo', 1, '[1,2]'),
-            array('foo', 2, '[1,2]'),
-            array('bar', 1, ']1,2['),
-            array('bar', 2, ']1,2['),
-            array('foo', log(0), '[-Inf,2['),
-            array('foo', -log(0), '[-2,+Inf]'),
-        );
+        return [
+            ['foo', 3, '{1,2, 3 ,4}'],
+            ['bar', 10, '{1,2, 3 ,4}'],
+            ['bar', 3, '[1,2]'],
+            ['foo', 1, '[1,2]'],
+            ['foo', 2, '[1,2]'],
+            ['bar', 1, ']1,2['],
+            ['bar', 2, ']1,2['],
+            ['foo', log(0), '[-Inf,2['],
+            ['foo', -log(0), '[-2,+Inf]'],
+        ];
     }
 
     /**
@@ -146,14 +146,14 @@ public function testChoose($expected, $id, $number)
     {
         $translator = $this->getTranslator();
 
-        $this->assertEquals($expected, $translator->trans($id, array('%count%' => $number)));
+        $this->assertEquals($expected, $translator->trans($id, ['%count%' => $number]));
     }
 
     public function testReturnMessageIfExactlyOneStandardRuleIsGiven()
     {
         $translator = $this->getTranslator();
 
-        $this->assertEquals('There are two apples', $translator->trans('There are two apples', array('%count%' => 2)));
+        $this->assertEquals('There are two apples', $translator->trans('There are two apples', ['%count%' => 2]));
     }
 
     /**
@@ -164,98 +164,98 @@ public function testThrowExceptionIfMatchingMessageCannotBeFound($id, $number)
     {
         $translator = $this->getTranslator();
 
-        $translator->trans($id, array('%count%' => $number));
+        $translator->trans($id, ['%count%' => $number]);
     }
 
     public function getNonMatchingMessages()
     {
-        return array(
-            array('{0} There are no apples|{1} There is one apple', 2),
-            array('{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('{1} There is one apple|]2,Inf] There are %count% apples', 2),
-            array('{0} There are no apples|There is one apple', 2),
-        );
+        return [
+            ['{0} There are no apples|{1} There is one apple', 2],
+            ['{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['{1} There is one apple|]2,Inf] There are %count% apples', 2],
+            ['{0} There are no apples|There is one apple', 2],
+        ];
     }
 
     public function getChooseTests()
     {
-        return array(
-            array('There are no apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('There are no apples', '{0}     There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('There are no apples', '{0}There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0),
+        return [
+            ['There are no apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['There are no apples', '{0}     There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['There are no apples', '{0}There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 0],
 
-            array('There is one apple', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 1),
+            ['There is one apple', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 1],
 
-            array('There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 10),
-            array('There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf]There are %count% apples', 10),
-            array('There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf]     There are %count% apples', 10),
+            ['There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf] There are %count% apples', 10],
+            ['There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf]There are %count% apples', 10],
+            ['There are 10 apples', '{0} There are no apples|{1} There is one apple|]1,Inf]     There are %count% apples', 10],
 
-            array('There are 0 apples', 'There is one apple|There are %count% apples', 0),
-            array('There is one apple', 'There is one apple|There are %count% apples', 1),
-            array('There are 10 apples', 'There is one apple|There are %count% apples', 10),
+            ['There are 0 apples', 'There is one apple|There are %count% apples', 0],
+            ['There is one apple', 'There is one apple|There are %count% apples', 1],
+            ['There are 10 apples', 'There is one apple|There are %count% apples', 10],
 
-            array('There are 0 apples', 'one: There is one apple|more: There are %count% apples', 0),
-            array('There is one apple', 'one: There is one apple|more: There are %count% apples', 1),
-            array('There are 10 apples', 'one: There is one apple|more: There are %count% apples', 10),
+            ['There are 0 apples', 'one: There is one apple|more: There are %count% apples', 0],
+            ['There is one apple', 'one: There is one apple|more: There are %count% apples', 1],
+            ['There are 10 apples', 'one: There is one apple|more: There are %count% apples', 10],
 
-            array('There are no apples', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 0),
-            array('There is one apple', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 1),
-            array('There are 10 apples', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 10),
+            ['There are no apples', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 0],
+            ['There is one apple', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 1],
+            ['There are 10 apples', '{0} There are no apples|one: There is one apple|more: There are %count% apples', 10],
 
-            array('', '{0}|{1} There is one apple|]1,Inf] There are %count% apples', 0),
-            array('', '{0} There are no apples|{1}|]1,Inf] There are %count% apples', 1),
+            ['', '{0}|{1} There is one apple|]1,Inf] There are %count% apples', 0],
+            ['', '{0} There are no apples|{1}|]1,Inf] There are %count% apples', 1],
 
             // Indexed only tests which are Gettext PoFile* compatible strings.
-            array('There are 0 apples', 'There is one apple|There are %count% apples', 0),
-            array('There is one apple', 'There is one apple|There are %count% apples', 1),
-            array('There are 2 apples', 'There is one apple|There are %count% apples', 2),
+            ['There are 0 apples', 'There is one apple|There are %count% apples', 0],
+            ['There is one apple', 'There is one apple|There are %count% apples', 1],
+            ['There are 2 apples', 'There is one apple|There are %count% apples', 2],
 
             // Tests for float numbers
-            array('There is almost one apple', '{0} There are no apples|]0,1[ There is almost one apple|{1} There is one apple|[1,Inf] There is more than one apple', 0.7),
-            array('There is one apple', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 1),
-            array('There is more than one apple', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 1.7),
-            array('There are no apples', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0),
-            array('There are no apples', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0.0),
-            array('There are no apples', '{0.0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0),
+            ['There is almost one apple', '{0} There are no apples|]0,1[ There is almost one apple|{1} There is one apple|[1,Inf] There is more than one apple', 0.7],
+            ['There is one apple', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 1],
+            ['There is more than one apple', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 1.7],
+            ['There are no apples', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0],
+            ['There are no apples', '{0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0.0],
+            ['There are no apples', '{0.0} There are no apples|]0,1[There are %count% apples|{1} There is one apple|[1,Inf] There is more than one apple', 0],
 
             // Test texts with new-lines
             // with double-quotes and \n in id & double-quotes and actual newlines in text
-            array("This is a text with a\n            new-line in it. Selector = 0.", '{0}This is a text with a
+            ["This is a text with a\n            new-line in it. Selector = 0.", '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 0),
+            new-line in it. Selector > 1.', 0],
             // with double-quotes and \n in id and single-quotes and actual newlines in text
-            array("This is a text with a\n            new-line in it. Selector = 1.", '{0}This is a text with a
+            ["This is a text with a\n            new-line in it. Selector = 1.", '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 1),
-            array("This is a text with a\n            new-line in it. Selector > 1.", '{0}This is a text with a
+            new-line in it. Selector > 1.', 1],
+            ["This is a text with a\n            new-line in it. Selector > 1.", '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 5),
+            new-line in it. Selector > 1.', 5],
             // with double-quotes and id split accros lines
-            array('This is a text with a
+            ['This is a text with a
             new-line in it. Selector = 1.', '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 1),
+            new-line in it. Selector > 1.', 1],
             // with single-quotes and id split accros lines
-            array('This is a text with a
+            ['This is a text with a
             new-line in it. Selector > 1.', '{0}This is a text with a
             new-line in it. Selector = 0.|{1}This is a text with a
             new-line in it. Selector = 1.|[1,Inf]This is a text with a
-            new-line in it. Selector > 1.', 5),
+            new-line in it. Selector > 1.', 5],
             // with single-quotes and \n in text
-            array('This is a text with a\nnew-line in it. Selector = 0.', '{0}This is a text with a\nnew-line in it. Selector = 0.|{1}This is a text with a\nnew-line in it. Selector = 1.|[1,Inf]This is a text with a\nnew-line in it. Selector > 1.', 0),
+            ['This is a text with a\nnew-line in it. Selector = 0.', '{0}This is a text with a\nnew-line in it. Selector = 0.|{1}This is a text with a\nnew-line in it. Selector = 1.|[1,Inf]This is a text with a\nnew-line in it. Selector > 1.', 0],
             // with double-quotes and id split accros lines
-            array("This is a text with a\nnew-line in it. Selector = 1.", "{0}This is a text with a\nnew-line in it. Selector = 0.|{1}This is a text with a\nnew-line in it. Selector = 1.|[1,Inf]This is a text with a\nnew-line in it. Selector > 1.", 1),
+            ["This is a text with a\nnew-line in it. Selector = 1.", "{0}This is a text with a\nnew-line in it. Selector = 0.|{1}This is a text with a\nnew-line in it. Selector = 1.|[1,Inf]This is a text with a\nnew-line in it. Selector > 1.", 1],
             // esacape pipe
-            array('This is a text with | in it. Selector = 0.', '{0}This is a text with || in it. Selector = 0.|{1}This is a text with || in it. Selector = 1.', 0),
+            ['This is a text with | in it. Selector = 0.', '{0}This is a text with || in it. Selector = 0.|{1}This is a text with || in it. Selector = 1.', 0],
             // Empty plural set (2 plural forms) from a .PO file
-            array('', '|', 1),
+            ['', '|', 1],
             // Empty plural set (3 plural forms) from a .PO file
-            array('', '||', 1),
-        );
+            ['', '||', 1],
+        ];
     }
 
     /**
@@ -285,13 +285,13 @@ public function testLangcodes($nplural, $langCodes)
      */
     public function successLangcodes()
     {
-        return array(
-            array('1', array('ay', 'bo', 'cgg', 'dz', 'id', 'ja', 'jbo', 'ka', 'kk', 'km', 'ko', 'ky')),
-            array('2', array('nl', 'fr', 'en', 'de', 'de_GE', 'hy', 'hy_AM')),
-            array('3', array('be', 'bs', 'cs', 'hr')),
-            array('4', array('cy', 'mt', 'sl')),
-            array('6', array('ar')),
-        );
+        return [
+            ['1', ['ay', 'bo', 'cgg', 'dz', 'id', 'ja', 'jbo', 'ka', 'kk', 'km', 'ko', 'ky']],
+            ['2', ['nl', 'fr', 'en', 'de', 'de_GE', 'hy', 'hy_AM']],
+            ['3', ['be', 'bs', 'cs', 'hr']],
+            ['4', ['cy', 'mt', 'sl']],
+            ['6', ['ar']],
+        ];
     }
 
     /**
@@ -304,13 +304,13 @@ public function successLangcodes()
      */
     public function failingLangcodes()
     {
-        return array(
-            array('1', array('fa')),
-            array('2', array('jbo')),
-            array('3', array('cbs')),
-            array('4', array('gd', 'kw')),
-            array('5', array('ga')),
-        );
+        return [
+            ['1', ['fa']],
+            ['2', ['jbo']],
+            ['3', ['cbs']],
+            ['4', ['gd', 'kw']],
+            ['5', ['ga']],
+        ];
     }
 
     /**
@@ -340,7 +340,7 @@ protected function generateTestData($langCodes)
             }
         };
 
-        $matrix = array();
+        $matrix = [];
         foreach ($langCodes as $langCode) {
             for ($count = 0; $count < 200; ++$count) {
                 $plural = $translator->getPluralizationRule($count, $langCode);
diff --git a/src/Symfony/Contracts/Translation/TranslatorInterface.php b/src/Symfony/Contracts/Translation/TranslatorInterface.php
index 2bdc415cbdcf..d8676373705d 100644
--- a/src/Symfony/Contracts/Translation/TranslatorInterface.php
+++ b/src/Symfony/Contracts/Translation/TranslatorInterface.php
@@ -61,5 +61,5 @@ interface TranslatorInterface
      *
      * @throws \InvalidArgumentException If the locale contains invalid characters
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null);
+    public function trans($id, array $parameters = [], $domain = null, $locale = null);
 }
diff --git a/src/Symfony/Contracts/Translation/TranslatorTrait.php b/src/Symfony/Contracts/Translation/TranslatorTrait.php
index 4e53fbd42c4c..c1021923c835 100644
--- a/src/Symfony/Contracts/Translation/TranslatorTrait.php
+++ b/src/Symfony/Contracts/Translation/TranslatorTrait.php
@@ -41,7 +41,7 @@ public function getLocale()
     /**
      * {@inheritdoc}
      */
-    public function trans($id, array $parameters = array(), $domain = null, $locale = null)
+    public function trans($id, array $parameters = [], $domain = null, $locale = null)
     {
         $id = (string) $id;
 
@@ -52,7 +52,7 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
         $number = (float) $parameters['%count%'];
         $locale = (string) $locale ?: $this->getLocale();
 
-        $parts = array();
+        $parts = [];
         if (preg_match('/^\|++$/', $id)) {
             $parts = explode('|', $id);
         } elseif (preg_match_all('/(?:\|\||[^\|])++/', $id, $matches)) {
@@ -77,7 +77,7 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
 )\s*(?P<message>.*?)$/xs
 EOF;
 
-        $standardRules = array();
+        $standardRules = [];
         foreach ($parts as $part) {
             $part = trim(str_replace('||', '|', $part));
 

From e03db4389404fa2b7fd1228033867a0e8433ff3d Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Wed, 16 Jan 2019 21:41:24 +0100
Subject: [PATCH 046/103] fixed CS

---
 .../PhpDumper/Fixtures/proxy-factory.php      |    2 +-
 .../LazyProxy/PhpDumper/ProxyDumperTest.php   |    2 +-
 .../Extension/TranslationExtensionTest.php    |   70 +-
 .../Resources/views/Form/form_help.html.php   |    2 +-
 src/Symfony/Component/BrowserKit/Client.php   |    4 +-
 .../Component/BrowserKit/Tests/ClientTest.php |    2 +-
 .../Component/Cache/Adapter/PdoAdapter.php    |    2 +-
 .../Component/Cache/Simple/PdoCache.php       |    2 +-
 .../Component/Cache/Traits/MemcachedTrait.php |    2 +-
 .../Component/Cache/Traits/PhpArrayTrait.php  |    4 +-
 .../Component/Cache/Traits/PhpFilesTrait.php  |    2 +-
 src/Symfony/Component/Console/CHANGELOG.md    |    2 +-
 .../Debug/Tests/DebugClassLoaderTest.php      |    6 +-
 .../DependencyInjection/ContainerBuilder.php  |    4 +-
 .../DependencyInjection/Dumper/PhpDumper.php  |   46 +-
 .../Tests/Fixtures/config/prototype_array.php |    6 +-
 .../container_service_locator_argument.php    |    4 +-
 ...er_class_constructor_without_arguments.php |   10 +-
 ...s_with_mandatory_constructor_arguments.php |   10 +-
 ...ss_with_optional_constructor_arguments.php |   10 +-
 ...om_container_class_without_constructor.php |   10 +-
 .../Tests/Fixtures/php/services1-1.php        |   10 +-
 .../Tests/Fixtures/php/services1.php          |   10 +-
 .../Tests/Fixtures/php/services10.php         |   24 +-
 .../Tests/Fixtures/php/services12.php         |   26 +-
 .../Tests/Fixtures/php/services13.php         |   14 +-
 .../Tests/Fixtures/php/services19.php         |   24 +-
 .../Tests/Fixtures/php/services24.php         |   14 +-
 .../Tests/Fixtures/php/services26.php         |   24 +-
 .../Tests/Fixtures/php/services33.php         |   14 +-
 .../Tests/Fixtures/php/services8.php          |   22 +-
 .../Tests/Fixtures/php/services9_as_files.txt |   42 +-
 .../Tests/Fixtures/php/services9_compiled.php |   32 +-
 .../Tests/Fixtures/php/services_adawson.php   |   16 +-
 .../php/services_almost_circular_private.php  |   14 +-
 .../php/services_almost_circular_public.php   |   14 +-
 .../Fixtures/php/services_array_params.php    |   32 +-
 .../Fixtures/php/services_base64_env.php      |   20 +-
 .../Tests/Fixtures/php/services_csv_env.php   |   20 +-
 .../php/services_dedup_lazy_proxy.php         |   14 +-
 .../Fixtures/php/services_deep_graph.php      |   14 +-
 .../Tests/Fixtures/php/services_env_in_id.php |   24 +-
 .../php/services_errored_definition.php       |   32 +-
 .../Fixtures/php/services_inline_requires.php |   22 +-
 .../Fixtures/php/services_inline_self_ref.php |   14 +-
 .../Tests/Fixtures/php/services_json_env.php  |   20 +-
 .../Tests/Fixtures/php/services_locator.php   |   30 +-
 .../Fixtures/php/services_non_shared_lazy.php |   14 +-
 .../Fixtures/php/services_private_frozen.php  |   14 +-
 .../php/services_private_in_expression.php    |   14 +-
 .../Tests/Fixtures/php/services_rot13_env.php |   32 +-
 .../php/services_service_locator_argument.php |   34 +-
 .../Fixtures/php/services_subscriber.php      |   28 +-
 .../Tests/Fixtures/php/services_tsantos.php   |   16 +-
 .../php/services_uninitialized_ref.php        |   18 +-
 src/Symfony/Component/Form/CHANGELOG.md       |    2 +-
 src/Symfony/Component/Lock/Store/PdoStore.php |    2 +-
 .../OptionsResolver/OptionsResolver.php       |    2 +-
 .../Component/Process/Tests/ProcessTest.php   |    4 +-
 .../Matcher/Dumper/PhpMatcherDumper.php       |   22 +-
 .../Tests/Fixtures/dumper/url_matcher1.php    |   96 +-
 .../Tests/Fixtures/dumper/url_matcher10.php   | 2008 ++++++++---------
 .../Tests/Fixtures/dumper/url_matcher11.php   |   36 +-
 .../Tests/Fixtures/dumper/url_matcher12.php   |   20 +-
 .../Tests/Fixtures/dumper/url_matcher13.php   |   16 +-
 .../Tests/Fixtures/dumper/url_matcher2.php    |  100 +-
 .../Tests/Fixtures/dumper/url_matcher3.php    |   18 +-
 .../Tests/Fixtures/dumper/url_matcher4.php    |   20 +-
 .../Tests/Fixtures/dumper/url_matcher5.php    |   40 +-
 .../Tests/Fixtures/dumper/url_matcher6.php    |   44 +-
 .../Tests/Fixtures/dumper/url_matcher7.php    |   44 +-
 .../Tests/Fixtures/dumper/url_matcher8.php    |   14 +-
 .../Tests/Fixtures/dumper/url_matcher9.php    |   14 +-
 .../Security/Core/Tests/SecurityTest.php      |    2 +-
 .../Security/Http/FirewallMapInterface.php    |    2 +-
 .../Serializer/Encoder/XmlEncoder.php         |    2 +-
 .../Normalizer/AbstractNormalizer.php         |    4 +-
 .../VarDumper/Tests/Fixtures/dumb-var.php     |   10 +-
 .../Service/ServiceSubscriberInterface.php    |   16 +-
 79 files changed, 1726 insertions(+), 1726 deletions(-)

diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/Fixtures/proxy-factory.php b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/Fixtures/proxy-factory.php
index 648eb36d4b59..af3b972cdfdc 100644
--- a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/Fixtures/proxy-factory.php
+++ b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/Fixtures/proxy-factory.php
@@ -3,7 +3,7 @@
 return new class
 {
     public $proxyClass;
-    private $privates = array();
+    private $privates = [];
 
     public function getFooService($lazyLoad = true)
     {
diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
index a72891aa5d34..984e2e2a1b59 100644
--- a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
+++ b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
@@ -136,7 +136,7 @@ public function testGetProxyFactoryCodeForInterface()
 return new class
 {
     public \$proxyClass;
-    private \$privates = array();
+    private \$privates = [];
 
     public function getFooService(\$lazyLoad = true)
     {
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
index 3ab6c95eefca..de85603a5352 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
@@ -49,7 +49,7 @@ public function testTrans($template, $expected, array $variables = [])
      * @group legacy
      * @dataProvider getTransChoiceTests
      */
-    public function testTransChoice($template, $expected, array $variables = array())
+    public function testTransChoice($template, $expected, array $variables = [])
     {
         $this->testTrans($template, $expected, $variables);
     }
@@ -98,48 +98,48 @@ public function getTransTests()
             ['{% trans into "fr"%}Hello{% endtrans %}', 'Hello'],
 
             // trans with count
-            array(
+            [
                 '{% trans from "messages" %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtrans %}',
                 'There is no apples',
-                array('count' => 0),
-            ),
-            array(
+                ['count' => 0],
+            ],
+            [
                 '{% trans %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtrans %}',
                 'There is 5 apples',
-                array('count' => 5),
-            ),
-            array(
+                ['count' => 5],
+            ],
+            [
                 '{% trans %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%){% endtrans %}',
                 'There is 5 apples (Symfony)',
-                array('count' => 5, 'name' => 'Symfony'),
-            ),
-            array(
+                ['count' => 5, 'name' => 'Symfony'],
+            ],
+            [
                 '{% trans with { \'%name%\': \'Symfony\' } %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%){% endtrans %}',
                 'There is 5 apples (Symfony)',
-                array('count' => 5),
-            ),
-            array(
+                ['count' => 5],
+            ],
+            [
                 '{% trans into "fr"%}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtrans %}',
                 'There is no apples',
-                array('count' => 0),
-            ),
-            array(
+                ['count' => 0],
+            ],
+            [
                 '{% trans count 5 into "fr"%}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtrans %}',
                 'There is 5 apples',
-            ),
+            ],
 
             // trans filter
-            array('{{ "Hello"|trans }}', 'Hello'),
-            array('{{ name|trans }}', 'Symfony', array('name' => 'Symfony')),
-            array('{{ hello|trans({ \'%name%\': \'Symfony\' }) }}', 'Hello Symfony', array('hello' => 'Hello %name%')),
-            array('{% set vars = { \'%name%\': \'Symfony\' } %}{{ hello|trans(vars) }}', 'Hello Symfony', array('hello' => 'Hello %name%')),
-            array('{{ "Hello"|trans({}, "messages", "fr") }}', 'Hello'),
+            ['{{ "Hello"|trans }}', 'Hello'],
+            ['{{ name|trans }}', 'Symfony', ['name' => 'Symfony']],
+            ['{{ hello|trans({ \'%name%\': \'Symfony\' }) }}', 'Hello Symfony', ['hello' => 'Hello %name%']],
+            ['{% set vars = { \'%name%\': \'Symfony\' } %}{{ hello|trans(vars) }}', 'Hello Symfony', ['hello' => 'Hello %name%']],
+            ['{{ "Hello"|trans({}, "messages", "fr") }}', 'Hello'],
 
             // trans filter with count
-            array('{{ "{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples"|trans(count=count) }}', 'There is 5 apples', array('count' => 5)),
-            array('{{ text|trans(count=5, arguments={\'%name%\': \'Symfony\'}) }}', 'There is 5 apples (Symfony)', array('text' => '{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%)')),
-            array('{{ "{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples"|trans({}, "messages", "fr", count) }}', 'There is 5 apples', array('count' => 5)),
-        );
+            ['{{ "{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples"|trans(count=count) }}', 'There is 5 apples', ['count' => 5]],
+            ['{{ text|trans(count=5, arguments={\'%name%\': \'Symfony\'}) }}', 'There is 5 apples (Symfony)', ['text' => '{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%)']],
+            ['{{ "{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples"|trans({}, "messages", "fr", count) }}', 'There is 5 apples', ['count' => 5]],
+        ];
     }
 
     /**
@@ -147,18 +147,18 @@ public function getTransTests()
      */
     public function getTransChoiceTests()
     {
-        return array(
+        return [
             // trans tag
-            array('{% trans %}Hello{% endtrans %}', 'Hello'),
-            array('{% trans %}%name%{% endtrans %}', 'Symfony', array('name' => 'Symfony')),
+            ['{% trans %}Hello{% endtrans %}', 'Hello'],
+            ['{% trans %}%name%{% endtrans %}', 'Symfony', ['name' => 'Symfony']],
 
-            array('{% trans from elsewhere %}Hello{% endtrans %}', 'Hello'),
+            ['{% trans from elsewhere %}Hello{% endtrans %}', 'Hello'],
 
-            array('{% trans %}Hello %name%{% endtrans %}', 'Hello Symfony', array('name' => 'Symfony')),
-            array('{% trans with { \'%name%\': \'Symfony\' } %}Hello %name%{% endtrans %}', 'Hello Symfony'),
-            array('{% set vars = { \'%name%\': \'Symfony\' } %}{% trans with vars %}Hello %name%{% endtrans %}', 'Hello Symfony'),
+            ['{% trans %}Hello %name%{% endtrans %}', 'Hello Symfony', ['name' => 'Symfony']],
+            ['{% trans with { \'%name%\': \'Symfony\' } %}Hello %name%{% endtrans %}', 'Hello Symfony'],
+            ['{% set vars = { \'%name%\': \'Symfony\' } %}{% trans with vars %}Hello %name%{% endtrans %}', 'Hello Symfony'],
 
-            array('{% trans into "fr"%}Hello{% endtrans %}', 'Hello'),
+            ['{% trans into "fr"%}Hello{% endtrans %}', 'Hello'],
 
             // transchoice
             [
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_help.html.php b/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_help.html.php
index 605f860cadcc..1490e7ab5f76 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form/form_help.html.php
+++ b/src/Symfony/Bundle/Fra
10000
meworkBundle/Resources/views/Form/form_help.html.php
@@ -1,4 +1,4 @@
 <?php if (!empty($help)): ?>
     <?php $help_attr['class'] = isset($help_attr['class']) ? trim($help_attr['class'].' help-text') : 'help-text'; ?>
-    <p id="<?php echo $view->escape($id); ?>_help" <?php echo ' '.$view['form']->block($form, 'attributes', array('attr' => $help_attr)); ?>><?php echo $view->escape(false !== $translation_domain ? $view['translator']->trans($help, array(), $translation_domain) : $help); ?></p>
+    <p id="<?php echo $view->escape($id); ?>_help" <?php echo ' '.$view['form']->block($form, 'attributes', ['attr' => $help_attr]); ?>><?php echo $view->escape(false !== $translation_domain ? $view['translator']->trans($help, [], $translation_domain) : $help); ?></p>
 <?php endif; ?>
diff --git a/src/Symfony/Component/BrowserKit/Client.php b/src/Symfony/Component/BrowserKit/Client.php
index c2a94af5ac0c..de6a01c90ec0 100644
--- a/src/Symfony/Component/BrowserKit/Client.php
+++ b/src/Symfony/Component/BrowserKit/Client.php
@@ -316,7 +316,7 @@ public function clickLink(string $linkText): Crawler
     public function submit(Form $form, array $values = []/*, array $serverParameters = []*/)
     {
         if (\func_num_args() < 3 && __CLASS__ !== \get_class($this) && __CLASS__ !== (new \ReflectionMethod($this, __FUNCTION__))->getDeclaringClass()->getName() && !$this instanceof \PHPUnit\Framework\MockObject\MockObject && !$this instanceof \Prophecy\Prophecy\ProphecySubjectInterface) {
-            @trigger_error(sprintf('The "%s()" method will have a new "array $serverParameters = array()" argument in version 5.0, not defining it is deprecated since Symfony 4.2.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s()" method will have a new "array $serverParameters = []" argument in version 5.0, not defining it is deprecated since Symfony 4.2.', __METHOD__), E_USER_DEPRECATED);
         }
 
         $form->setValues($values);
@@ -330,7 +330,7 @@ public function submit(Form $form, array $values = []/*, array $serverParameters
      * uses it to submit the given form field values.
      *
      * @param string $button           The text content, id, value or name of the form <button> or <input type="submit">
-     * @param array  $fieldValues      Use this syntax: array('my_form[name]' => '...', 'my_form[email]' => '...')
+     * @param array  $fieldValues      Use this syntax: ['my_form[name]' => '...', 'my_form[email]' => '...']
      * @param string $method           The HTTP method used to submit the form
      * @param array  $serverParameters These values override the ones stored in $_SERVER (HTTP headers must include a HTTP_ prefix as PHP does)
      */
diff --git a/src/Symfony/Component/BrowserKit/Tests/ClientTest.php b/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
index 4f6355012b3c..8bc169872ef7 100644
--- a/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/ClientTest.php
@@ -896,7 +896,7 @@ public function testInternalRequestNull()
 
     /**
      * @group legacy
-     * @expectedDeprecation The "Symfony\Component\BrowserKit\Client::submit()" method will have a new "array $serverParameters = array()" argument in version 5.0, not defining it is deprecated since Symfony 4.2.
+     * @expectedDeprecation The "Symfony\Component\BrowserKit\Client::submit()" method will have a new "array $serverParameters = []" argument in version 5.0, not defining it is deprecated since Symfony 4.2.
      */
     public function testInheritedClassCallSubmitWithTwoArguments()
     {
diff --git a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
index c2a18cdd4b7b..d118736aec06 100644
--- a/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PdoAdapter.php
@@ -39,7 +39,7 @@ class PdoAdapter extends AbstractAdapter implements PruneableInterface
      *  * db_time_col: The column where to store the timestamp [default: item_time]
      *  * db_username: The username when lazy-connect [default: '']
      *  * db_password: The password when lazy-connect [default: '']
-     *  * db_connection_options: An array of driver-specific connection options [default: array()]
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
      *
      * @param \PDO|Connection|string $connOrDsn a \PDO or Connection instance or DSN string or null
      *
diff --git a/src/Symfony/Component/Cache/Simple/PdoCache.php b/src/Symfony/Component/Cache/Simple/PdoCache.php
index 985753fe7b41..521e9b8f2d7f 100644
--- a/src/Symfony/Component/Cache/Simple/PdoCache.php
+++ b/src/Symfony/Component/Cache/Simple/PdoCache.php
@@ -37,7 +37,7 @@ class PdoCache extends AbstractCache implements PruneableInterface
      *  * db_time_col: The column where to store the timestamp [default: item_time]
      *  * db_username: The username when lazy-connect [default: '']
      *  * db_password: The password when lazy-connect [default: '']
-     *  * db_connection_options: An array of driver-specific connection options [default: array()]
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
      *
      * @param \PDO|Connection|string $connOrDsn a \PDO or Connection instance or DSN string or null
      *
diff --git a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
index b25f29f5240c..b83d69593715 100644
--- a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
+++ b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
@@ -68,7 +68,7 @@ private function init(\Memcached $client, $namespace, $defaultLifetime, ?Marshal
      *
      * Examples for servers:
      * - 'memcached://user:pass@localhost?weight=33'
-     * - array(array('localhost', 11211, 33))
+     * - [['localhost', 11211, 33]]
      *
      * @param array[]|string|string[] $servers An array of servers, a DSN, or an array of DSNs
      * @param array                   $options An array of options
diff --git a/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php b/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
index 3d3bab97de17..0bec18a07aa5 100644
--- a/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PhpArrayTrait.php
@@ -63,7 +63,7 @@ public function warmUp(array $values)
 
 // This file has been auto-generated by the Symfony Cache Component.
 
-return array(array(
+return [[
 
 
 EOF;
@@ -106,7 +106,7 @@ public function warmUp(array $values)
             $dump .= var_export($key, true)." => {$id},\n";
         }
 
-        $dump .= "\n), array(\n\n{$dumpedValues}\n));\n";
+        $dump .= "\n], [\n\n{$dumpedValues}\n]];\n";
 
         $tmpFile = uniqid($this->file, true);
 
diff --git a/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php b/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
index dd7518a47a5b..b57addb54fb1 100644
--- a/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
@@ -195,7 +195,7 @@ protected function doSave(array $values, $lifetime)
 
             $file = $this->files[$key] = $this->getFile($key, true);
             // Since OPcache only compiles files older than the script execution start, set the file's mtime in the past
-            $ok = $this->write($file, "<?php return array({$expiry}, {$value});\n", self::$startTime - 10) && $ok;
+            $ok = $this->write($file, "<?php return [{$expiry}, {$value}];\n", self::$startTime - 10) && $ok;
 
             if ($allowCompile) {
                 @opcache_invalidate($file, true);
diff --git a/src/Symfony/Component/Console/CHANGELOG.md b/src/Symfony/Component/Console/CHANGELOG.md
index b9175109c434..399bbc221336 100644
--- a/src/Symfony/Component/Console/CHANGELOG.md
+++ b/src/Symfony/Component/Console/CHANGELOG.md
@@ -4,7 +4,7 @@ CHANGELOG
 4.2.0
 -----
 
- * allowed passing commands as `array($process, 'ENV_VAR' => 'value')` to
+ * allowed passing commands as `[$process, 'ENV_VAR' => 'value']` to
    `ProcessHelper::run()` to pass environment variables
  * deprecated passing a command as a string to `ProcessHelper::run()`,
    pass it the command as an array of its arguments instead
diff --git a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
index b097c3dc41de..254d6879c5e6 100644
--- a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
+++ b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
@@ -275,7 +275,7 @@ class_exists('Test\\'.__NAMESPACE__.'\\ExtendsInternals', true);
 
     public function testExtendedMethodDefinesNewParameters()
     {
-        $deprecations = array();
+        $deprecations = [];
         set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
         $e = error_reporting(E_USER_DEPRECATED);
 
@@ -284,11 +284,11 @@ class_exists(__NAMESPACE__.'\\Fixtures\SubClassWithAnnotatedParameters', true);
         error_reporting($e);
         restore_error_handler();
 
-        $this->assertSame(array(
+        $this->assertSame([
             'The "Symfony\Component\Debug\Tests\Fixtures\SubClassWithAnnotatedParameters::quzMethod()" method will require a new "Quz $quz" argument in the next major version of its parent class "Symfony\Component\Debug\Tests\Fixtures\ClassWithAnnotatedParameters", not defining it is deprecated.',
             'The "Symfony\Component\Debug\Tests\Fixtures\SubClassWithAnnotatedParameters::whereAmI()" method will require a new "bool $matrix" argument in the next major version of its parent class "Symfony\Component\Debug\Tests\Fixtures\InterfaceWithAnnotatedParameters", not defining it is deprecated.',
             'The "Symfony\Component\Debug\Tests\Fixtures\SubClassWithAnnotatedParameters::isSymfony()" method will require a new "true $yes" argument in the next major version of its parent class "Symfony\Component\Debug\Tests\Fixtures\ClassWithAnnotatedParameters", not defining it is deprecated.',
-        ), $deprecations);
+        ], $deprecations);
     }
 
     public function testUseTraitWithInternalMethod()
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 8630052822d7..172654eb41e3 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -618,7 +618,7 @@ private function doGet($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_
      * the parameters passed to the container constructor to have precedence
      * over the loaded ones.
      *
-     *     $container = new ContainerBuilder(new ParameterBag(array('foo' => 'bar')));
+     *     $container = new ContainerBuilder(new ParameterBag(['foo' => 'bar']));
      *     $loader = new LoaderXXX($container);
      *     $loader->load('resource_name');
      *     $container->register('foo', 'stdClass');
@@ -1253,7 +1253,7 @@ private function doResolveServices($value, array &$inlineServices = [], $isConst
      *
      * Example:
      *
-     *     $container->register('foo')->addTag('my.tag', array('hello' => 'world'));
+     *     $container->register('foo')->addTag('my.tag', ['hello' => 'world']);
      *
      *     $serviceIds = $container->findTaggedServiceIds('my.tag');
      *     foreach ($serviceIds as $serviceId => $tags) {
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 0a2162d37204..8e0e3528ecb9 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -224,7 +224,7 @@ public function dump(array $options = [])
         if ($this->addGetService) {
             $code = preg_replace(
                 "/(\r?\n\r?\n    public function __construct.+?\\{\r?\n)/s",
-                "\n    private \$getService;$1        \$this->getService = \\Closure::fromCallable(array(\$this, 'getService'));\n",
+                "\n    private \$getService;$1        \$this->getService = \\Closure::fromCallable([\$this, 'getService']);\n",
                 $code,
                 1
             );
@@ -250,11 +250,11 @@ public function dump(array $options = [])
             }
             if ($ids = array_keys($ids)) {
                 sort($ids);
-                $c = "<?php\n\nreturn array(\n";
+                $c = "<?php\n\nreturn [\n";
                 foreach ($ids as $id) {
                     $c .= '    '.$this->doExport($id)." => true,\n";
                 }
-                $files['removed-ids.php'] = $c .= ");\n";
+                $files['removed-ids.php'] = $c .= "];\n";
             }
 
             foreach ($this->generateServiceFiles($services) as $file => $c) {
@@ -293,11 +293,11 @@ public function dump(array $options = [])
     \\class_alias(\\Container{$hash}\\{$options['class']}::class, {$options['class']}::class, false);
 }
 
-return new \\Container{$hash}\\{$options['class']}(array(
+return new \\Container{$hash}\\{$options['class']}([
     'container.build_hash' => '$hash',
     'container.build_id' => '$id',
     'container.build_time' => $time,
-), __DIR__.\\DIRECTORY_SEPARATOR.'Container{$hash}');
+], __DIR__.\\DIRECTORY_SEPARATOR.'Container{$hash}');
 
 EOF;
         } else {
@@ -952,7 +952,7 @@ private function startClass(string $class, string $baseClass, string $baseClassW
 class $class extends $baseClass
 {
     private \$parameters;
-    private \$targetDirs = array();
+    private \$targetDirs = [];
 
     public function __construct()
     {
@@ -970,7 +970,7 @@ public function __construct()
         }
         if ($this->asFiles) {
             $code = str_replace('$parameters', "\$buildParameters;\n    private \$containerDir;\n    private \$parameters", $code);
-            $code = str_replace('__construct()', '__construct(array $buildParameters = array(), $containerDir = __DIR__)', $code);
+            $code = str_replace('__construct()', '__construct(array $buildParameters = [], $containerDir = __DIR__)', $code);
             $code .= "        \$this->buildParameters = \$buildParameters;\n";
             $code .= "        \$this->containerDir = \$containerDir;\n";
         }
@@ -990,7 +990,7 @@ public function __construct()
         if ($this->container->getParameterBag()->all()) {
             $code .= "        \$this->parameters = \$this->getDefaultParameters();\n\n";
         }
-        $code .= "        \$this->services = \$this->privates = array();\n";
+        $code .= "        \$this->services = \$this->privates = [];\n";
 
         $code .= $this->addSyntheticIds();
         $code .= $this->addMethodMap();
@@ -1064,7 +1064,7 @@ private function addSyntheticIds(): string
             }
         }
 
-        return $code ? "        \$this->syntheticIds = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->syntheticIds = [\n{$code}        ];\n" : '';
     }
 
     private function addRemovedIds(): string
@@ -1091,7 +1091,7 @@ private function addRemovedIds(): string
                 $code .= '            '.$this->doExport($id)." => true,\n";
             }
 
-            $code = "array(\n{$code}        )";
+            $code = "[\n{$code}        ]";
         }
 
         return <<<EOF
@@ -1115,7 +1115,7 @@ private function addMethodMap(): string
             }
         }
 
-        return $code ? "        \$this->methodMap = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->methodMap = [\n{$code}        ];\n" : '';
     }
 
     private function addFileMap(): string
@@ -1129,16 +1129,16 @@ private function addFileMap(): string
             }
         }
 
-        return $code ? "        \$this->fileMap = array(\n{$code}        );\n" : '';
+        return $code ? "        \$this->fileMap = [\n{$code}        ];\n" : '';
     }
 
     private function addAliases(): string
     {
         if (!$aliases = $this->container->getAliases()) {
-            return "\n        \$this->aliases = array();\n";
+            return "\n        \$this->aliases = [];\n";
         }
 
-        $code = "        \$this->aliases = array(\n";
+        $code = "        \$this->aliases = [\n";
         ksort($aliases);
         foreach ($aliases as $alias => $id) {
             $id = (string) $id;
@@ -1148,7 +1148,7 @@ private function addAliases(): string
             $code .= '            '.$this->doExport($alias).' => '.$this->doExport($id).",\n";
         }
 
-        return $code."        );\n";
+        return $code."        ];\n";
     }
 
     private function addInlineRequires(): string
@@ -1196,7 +1196,7 @@ private function addDefaultParametersMethod(): string
                 throw new InvalidArgumentException(sprintf('Parameter name cannot use env parameters: %s.', $resolvedKey));
             }
             $export = $this->exportParameters([$value]);
-            $export = explode('0 => ', substr(rtrim($export, " )\n"), 7, -1), 2);
+            $export = explode('0 => ', substr(rtrim($export, " ]\n"), 2, -1), 2);
 
             if (preg_match("/\\\$this->(?:getEnv\('(?:\w++:)*+\w++'\)|targetDirs\[\d++\])/", $export[1])) {
                 $dynamicPhp[$key] = sprintf('%scase %s: $value = %s; break;', $export[0], $this->export($key), $export[1]);
@@ -1204,7 +1204,7 @@ private function addDefaultParametersMethod(): string
                 $php[] = sprintf('%s%s => %s,', $export[0], $this->export($key), $export[1]);
             }
         }
-        $parameters = sprintf("array(\n%s\n%s)", implode("\n", $php), str_repeat(' ', 8));
+        $parameters = sprintf("[\n%s\n%s]", implode("\n", $php), str_repeat(' ', 8));
 
         $code = <<<'EOF'
 
@@ -1274,14 +1274,14 @@ public function getParameterBag()
 EOF;
             $getDynamicParameter = sprintf($getDynamicParameter, implode("\n", $dynamicPhp));
         } else {
-            $loadedDynamicParameters = 'array()';
+            $loadedDynamicParameters = '[]';
             $getDynamicParameter = str_repeat(' ', 8).'throw new InvalidArgumentException(sprintf(\'The dynamic parameter "%s" must be defined.\', $name));';
         }
 
         $code .= <<<EOF
 
     private \$loadedDynamicParameters = {$loadedDynamicParameters};
-    private \$dynamicParameters = array();
+    private \$dynamicParameters = [];
 
     /*{$this->docStar}
      * Computes a dynamic parameter.
@@ -1338,7 +1338,7 @@ private function exportParameters(array $parameters, string $path = '', int $ind
             $php[] = sprintf('%s%s => %s,', str_repeat(' ', $indent), $this->export($key), $value);
         }
 
-        return sprintf("array(\n%s\n%s)", implode("\n", $php), str_repeat(' ', $indent - 4));
+        return sprintf("[\n%s\n%s]", implode("\n", $php), str_repeat(' ', $indent - 4));
     }
 
     private function endClass(): string
@@ -1444,7 +1444,7 @@ private function dumpValue($value, bool $interpolate = true): string
                 $code[] = sprintf('%s => %s', $this->dumpValue($k, $interpolate), $this->dumpValue($v, $interpolate));
             }
 
-            return sprintf('array(%s)', implode(', ', $code));
+            return sprintf('[%s]', implode(', ', $code));
         } elseif ($value instanceof ArgumentInterface) {
             $scope = [$this->definitionVariables, $this->referenceVariables];
             $this->definitionVariables = $this->referenceVariables = null;
@@ -1502,7 +1502,7 @@ private function dumpValue($value, bool $interpolate = true): string
                         }
                         $definition = $this->container->findDefinition($id = (string) $v);
                         $load = !($e = $definition->getErrors()) ? $this->asFiles && !$this->isHotPath($definition) : reset($e);
-                        $serviceMap .= sprintf("\n            %s => array(%s, %s, %s, %s),",
+                        $serviceMap .= sprintf("\n            %s => [%s, %s, %s, %s],",
                             $this->export($k),
                             $this->export($definition->isShared() ? ($definition->isPublic() ? 'services' : 'privates') : false),
                             $this->export($id),
@@ -1513,7 +1513,7 @@ private function dumpValue($value, bool $interpolate = true): string
                     }
                     $this->addGetService = true;
 
-                    return sprintf('new \%s($this->getService, array(%s%s))', ServiceLocator::class, $serviceMap, $serviceMap ? "\n        " : '');
+                    return sprintf('new \%s($this->getService, [%s%s])', ServiceLocator::class, $serviceMap, $serviceMap ? "\n        " : '');
                 }
             } finally {
                 list($this->definitionVariables, $this->referenceVariables) = $scope;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype_array.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype_array.php
index 4d5625c245aa..819a3fa11c15 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype_array.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/prototype_array.php
@@ -9,11 +9,11 @@
         ->tag('baz');
     $di->load(Prototype::class.'\\', '../Prototype')
         ->autoconfigure()
-        ->exclude(array('../Prototype/OtherDir', '../Prototype/BadClasses'))
+        ->exclude(['../Prototype/OtherDir', '../Prototype/BadClasses'])
         ->factory('f')
         ->deprecate('%service_id%')
-        ->args(array(0))
-        ->args(array(1))
+        ->args([0])
+        ->args([1])
         ->autoconfigure(false)
         ->tag('foo')
         ->parent('foo');
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_service_locator_argument.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_service_locator_argument.php
index 525dbde1f2ed..5c03ed3b85cb 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_service_locator_argument.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container_service_locator_argument.php
@@ -33,13 +33,13 @@
 
 $container
     ->register('bar', 'stdClass')
-    ->setProperty('locator', new ServiceLocatorArgument(array(
+    ->setProperty('locator', new ServiceLocatorArgument([
         'foo1' => new Reference('foo1'),
         'foo2' => new Reference('foo2'),
         'foo3' => new Reference('foo3'),
         'foo4' => new Reference('foo4', $container::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE),
         'foo5' => new Reference('foo5', $container::IGNORE_ON_UNINITIALIZED_REFERENCE),
-    )))
+    ]))
     ->setPublic(true)
 ;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
index 73f1bfd4758c..fdc9510ffe76 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_constructor_without_arguments.php
@@ -19,16 +19,16 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithoutArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         parent::__construct();
         $this->parameterBag = null;
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -43,9 +43,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
index 67d00b7618ce..e9e0ce940ccc 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_mandatory_constructor_arguments.php
@@ -19,13 +19,13 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithMandatoryArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -40,9 +40,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
index 770b478e4862..84714daaf1fa 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_with_optional_constructor_arguments.php
@@ -19,16 +19,16 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\ConstructorWithOptionalArgumentsContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         parent::__construct();
         $this->parameterBag = null;
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -43,9 +43,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
index 23a361ff118b..5fecfcff4f17 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/custom_container_class_without_constructor.php
@@ -19,13 +19,13 @@
 class ProjectServiceContainer extends \Symfony\Component\DependencyInjection\Tests\Fixtures\Container\NoConstructorContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -40,9 +40,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
index a03fa75674e9..09e5585c11ec 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
@@ -19,13 +19,13 @@
 class Container extends \Symfony\Component\DependencyInjection\Dump\AbstractContainer
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -40,9 +40,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
index c6ac23dd82fb..25b363060bac 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
@@ -17,13 +17,13 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -38,9 +38,9 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
index c1edd2cf74c0..101e8b57e83b 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
@@ -17,18 +17,18 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -43,10 +43,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -56,7 +56,7 @@ public function getRemovedIds()
      */
     protected function getTestService()
     {
-        return $this->services['test'] = new \stdClass(array('only dot' => '.', 'concatenation as value' => '.\'\'.', 'concatenation from the start value' => '\'\'.', '.' => 'dot as a key', '.\'\'.' => 'concatenation as a key', '\'\'.' => 'concatenation from the start key', 'optimize concatenation' => 'string1-string2', 'optimize concatenation with empty string' => 'string1string2', 'optimize concatenation from the start' => 'start', 'optimize concatenation at the end' => 'end', 'new line' => 'string with '."\n".'new line'));
+        return $this->services['test'] = new \stdClass(['only dot' => '.', 'concatenation as value' => '.\'\'.', 'concatenation from the start value' => '\'\'.', '.' => 'dot as a key', '.\'\'.' => 'concatenation as a key', '\'\'.' => 'concatenation from the start key', 'optimize concatenation' => 'string1-string2', 'optimize concatenation with empty string' => 'string1string2', 'optimize concatenation from the start' => 'start', 'optimize concatenation at the end' => 'end', 'new line' => 'string with '."\n".'new line']);
     }
 
     public function getParameter($name)
@@ -98,8 +98,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -122,9 +122,9 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'empty_value' => '',
             'some_string' => '-',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
index 5ce530a36a3f..f37923c4b1c5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
@@ -17,7 +17,7 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -27,12 +27,12 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -47,10 +47,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -60,7 +60,7 @@ public function getRemovedIds()
      */
     protected function getTestService()
     {
-        return $this->services['test'] = new \stdClass(('wiz'.$this->targetDirs[1]), array(('wiz'.$this->targetDirs[1]) => ($this->targetDirs[2].'/')));
+        return $this->services['test'] = new \stdClass(('wiz'.$this->targetDirs[1]), [('wiz'.$this->targetDirs[1]) => ($this->targetDirs[2].'/')]);
     }
 
     public function getParameter($name)
@@ -102,11 +102,11 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'foo' => false,
         'buz' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -136,9 +136,9 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'bar' => __DIR__,
             'baz' => (__DIR__.'/PhpDumperTest.php'),
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
index 8eaac031bf22..ff3aef254d49 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
@@ -17,16 +17,16 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -41,11 +41,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
index 56cdb8b31f93..7f8c93c5c646 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
@@ -17,19 +17,19 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'service_from_anonymous_factory' => 'getServiceFromAnonymousFactoryService',
             'service_with_method_call_and_factory' => 'getServiceWithMethodCallAndFactoryService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -44,10 +44,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -113,10 +113,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'foo' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -145,8 +145,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(FOO)' => 'Bar\\FaooClass',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
index d8072f822a56..96dee5eb92d2 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
@@ -17,16 +17,16 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -41,10 +41,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
index c0ef208db556..5d7c85b70dfc 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
@@ -17,7 +17,7 @@
 class Symfony_DI_PhpDumper_Test_EnvParameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -27,13 +27,13 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'test' => 'getTestService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -48,10 +48,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -113,14 +113,14 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'bar' => false,
         'baz' => false,
         'json' => false,
         'db_dsn' => false,
         'env(json_file)' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -153,10 +153,10 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'project_dir' => '/foo/bar',
             'env(FOO)' => 'foo',
             'env(DB)' => 'sqlite://%project_dir%/var/data.db',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
index 72cb664cbb4b..e1c7a5b95314 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
@@ -17,17 +17,17 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'Bar\\Foo' => 'getFooService',
             'Foo\\Foo' => 'getFoo2Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -42,10 +42,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
index 82b58a54e8e1..d8894ced9782 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
@@ -17,15 +17,15 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -40,10 +40,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function getParameter($name)
@@ -85,8 +85,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -109,12 +109,12 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'foo' => 'bar',
             'baz' => 'bar',
             'bar' => 'foo is %foo bar',
             'escape' => '@escapeme',
-            'values' => array(
+            'values' => [
                 0 => true,
                 1 => false,
                 2 => NULL,
@@ -123,9 +123,9 @@ protected function getDefaultParameters()
                 5 => 'true',
                 6 => 'false',
                 7 => 'null',
-            ),
+            ],
             'binary' => '����',
             'binary-control-char' => 'This is a Bell char ',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
index 6d305e570f00..992f6b1859bf 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
@@ -2,7 +2,7 @@ Array
 (
     [Container%s/removed-ids.php] => <?php
 
-return array(
+return [
     'Psr\\Container\\ContainerInterface' => true,
     'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
     'configurator_service' => true,
@@ -15,7 +15,7 @@ return array(
     'inlined' => true,
     'new_factory' => true,
     'tagged_iterator_foo' => true,
-);
+];
 
     [Container%s/getBAR2Service.php] => <?php
 
@@ -170,11 +170,11 @@ use Symfony\Component\DependencyInjection\Exception\RuntimeException;
 
 $a = ($this->services['foo.baz'] ?? $this->load('getFoo_BazService.php'));
 
-$this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array('bar' => 'foo is bar', 'foobar' => 'bar'), true, $this);
+$this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, ['bar' => 'foo is bar', 'foobar' => 'bar'], true, $this);
 
 $instance->foo = 'bar';
 $instance->moo = $a;
-$instance->qux = array('bar' => 'foo is bar', 'foobar' => 'bar');
+$instance->qux = ['bar' => 'foo is bar', 'foobar' => 'bar'];
 $instance->setBar(($this->services['bar'] ?? $this->getBarService()));
 $instance->initialize();
 sc_configure($instance);
@@ -374,9 +374,9 @@ class ProjectServiceContainer extends Container
     private $buildParameters;
     private $containerDir;
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
-    public function __construct(array $buildParameters = array(), $containerDir = __DIR__)
+    public function __construct(array $buildParameters = [], $containerDir = __DIR__)
     {
         $dir = $this->targetDirs[0] = \dirname($containerDir);
         for ($i = 1; $i <= 5; ++$i) {
@@ -386,14 +386,14 @@ class ProjectServiceContainer extends Container
         $this->containerDir = $containerDir;
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->syntheticIds = array(
+        $this->services = $this->privates = [];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
-        $this->fileMap = array(
+        ];
+        $this->fileMap = [
             'BAR' => 'getBAR2Service.php',
             'BAR2' => 'getBAR22Service.php',
             'bar2' => 'getBar23Service.php',
@@ -418,12 +418,12 @@ class ProjectServiceContainer extends Container
             'service_from_static_method' => 'getServiceFromStaticMethodService.php',
             'tagged_iterator' => 'getTaggedIteratorService.php',
             'throwing_one' => 'getThrowingOneService.php',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
             'decorated' => 'decorator_service_with_name',
-        );
+        ];
     }
 
     public function compile()
@@ -510,8 +510,8 @@ class ProjectServiceContainer extends Container
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -534,11 +534,11 @@ class ProjectServiceContainer extends Container
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
-        );
+        ];
     }
 
     protected function throw($message)
@@ -563,10 +563,10 @@ if (!\class_exists(ProjectServiceContainer::class, false)) {
     \class_alias(\Container%s\ProjectServiceContainer::class, ProjectServiceContainer::class, false);
 }
 
-return new \Container%s\ProjectServiceContainer(array(
+return new \Container%s\ProjectServiceContainer([
     'container.build_hash' => '%s',
     'container.build_id' => '%s',
     'container.build_time' => %d,
-), __DIR__.\DIRECTORY_SEPARATOR.'Container%s');
+], __DIR__.\DIRECTORY_SEPARATOR.'Container%s');
 
 )
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
index b74c56bbbc9d..939c88e76855 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
@@ -17,17 +17,17 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->syntheticIds = array(
+        $this->services = $this->privates = [];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'BAR' => 'getBARService',
             'BAR2' => 'getBAR2Service',
             'bar' => 'getBar3Service',
@@ -51,12 +51,12 @@ public function __construct()
             'runtime_error' => 'getRuntimeErrorService',
             'service_from_static_method' => 'getServiceFromStaticMethodService',
             'tagged_iterator' => 'getTaggedIteratorService',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
             'decorated' => 'decorator_service_with_name',
-        );
+        ];
     }
 
     public function compile()
@@ -71,7 +71,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'configurator_service' => true,
@@ -83,7 +83,7 @@ public function getRemovedIds()
             'inlined' => true,
             'new_factory' => true,
             'tagged_iterator_foo' => true,
-        );
+        ];
     }
 
     /**
@@ -244,11 +244,11 @@ protected function getFooService()
     {
         $a = ($this->services['foo.baz'] ?? $this->getFoo_BazService());
 
-        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array('bar' => 'foo is bar', 'foobar' => 'bar'), true, $this);
+        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, ['bar' => 'foo is bar', 'foobar' => 'bar'], true, $this);
 
         $instance->foo = 'bar';
         $instance->moo = $a;
-        $instance->qux = array('bar' => 'foo is bar', 'foobar' => 'bar');
+        $instance->qux = ['bar' => 'foo is bar', 'foobar' => 'bar'];
         $instance->setBar(($this->services['bar'] ?? $this->getBar3Service()));
         $instance->initialize();
         sc_configure($instance);
@@ -448,8 +448,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -472,11 +472,11 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
-        );
+        ];
     }
 
     protected function throw($message)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
index 136972846bd8..6239128bc4c7 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
@@ -17,17 +17,17 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'App\\Bus' => 'getBusService',
             'App\\Db' => 'getDbService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -42,7 +42,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'App\\Handler1' => true,
             'App\\Handler2' => true,
             'App\\Processor' => true,
@@ -50,7 +50,7 @@ public function getRemovedIds()
             'App\\Schema' => true,
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -66,7 +66,7 @@ protected function getBusService()
 
         $b = ($this->privates['App\Schema'] ?? $this->getSchemaService());
         $c = new \App\Registry();
-        $c->processor = array(0 => $a, 1 => $instance);
+        $c->processor = [0 => $a, 1 => $instance];
 
         $d = new \App\Processor($c, $a);
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
index 198427402ae7..e76fa907e204 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
@@ -17,12 +17,12 @@
 class Symfony_DI_PhpDumper_Test_Almost_Circular_Private extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar2' => 'getBar2Service',
             'bar3' => 'getBar3Service',
             'baz6' => 'getBaz6Service',
@@ -38,9 +38,9 @@ public function __construct()
             'manager2' => 'getManager2Service',
             'root' => 'getRootService',
             'subscriber' => 'getSubscriberService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -55,7 +55,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar' => true,
@@ -77,7 +77,7 @@ public function getRemovedIds()
             'logger2' => true,
             'multiuse1' => true,
             'subscriber2' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
index 1f03714232cb..7af6de85c114 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
@@ -17,12 +17,12 @@
 class Symfony_DI_PhpDumper_Test_Almost_Circular_Public extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'bar3' => 'getBar3Service',
             'bar5' => 'getBar5Service',
@@ -45,9 +45,9 @@ public function __construct()
             'manager2' => 'getManager2Service',
             'root' => 'getRootService',
             'subscriber' => 'getSubscriberService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -62,7 +62,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar2' => true,
@@ -77,7 +77,7 @@ public function getRemovedIds()
             'logger2' => true,
             'multiuse1' => true,
             'subscriber2' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
index 110b646a39d1..4d7b13f62096 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
@@ -17,7 +17,7 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -27,12 +27,12 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -47,10 +47,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -106,10 +106,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'array_2' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -123,9 +123,9 @@ public function getParameterBag()
     private function getDynamicParameter($name)
     {
         switch ($name) {
-            case 'array_2': $value = array(
+            case 'array_2': $value = [
                 0 => ($this->targetDirs[2].'/Dumper'),
-            ); break;
+            ]; break;
             default: throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
         }
         $this->loadedDynamicParameters[$name] = true;
@@ -140,10 +140,10 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
-            'array_1' => array(
+        return [
+            'array_1' => [
                 0 => 123,
-            ),
-        );
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
index d87d763e3cd3..b25d3853d226 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
@@ -17,15 +17,15 @@
 class Symfony_DI_PhpDumper_Test_Base64Parameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -40,10 +40,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function getParameter($name)
@@ -85,10 +85,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -117,8 +117,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => 'd29ybGQ=',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_csv_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_csv_env.php
index 092c09212b33..c5266d2c4dfb 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_csv_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_csv_env.php
@@ -17,15 +17,15 @@
 class Symfony_DI_PhpDumper_Test_CsvParameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->paramete
10000
rs = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -40,10 +40,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function getParameter($name)
@@ -85,10 +85,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -117,8 +117,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => 'foo,bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
index 18f3afb99865..8e7a204d4c22 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_dedup_lazy_proxy.php
@@ -17,17 +17,17 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -42,10 +42,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     protected function createProxy($class, \Closure $factory)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
index f729fd540e69..3f8f49bd3d85 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_deep_graph.php
@@ -17,17 +17,17 @@
 class Symfony_DI_PhpDumper_Test_Deep_Graph extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -42,10 +42,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
index 969137450a9d..84fb1599bf16 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
@@ -17,19 +17,19 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -44,12 +44,12 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'bar_%env(BAR)%' => true,
             'baz_%env(BAR)%' => true,
-        );
+        ];
     }
 
     /**
@@ -69,7 +69,7 @@ protected function getBarService()
      */
     protected function getFooService()
     {
-        return $this->services['foo'] = new \stdClass(($this->privates['bar_%env(BAR)%'] ?? ($this->privates['bar_%env(BAR)%'] = new \stdClass())), array('baz_'.$this->getEnv('string:BAR') => new \stdClass()));
+        return $this->services['foo'] = new \stdClass(($this->privates['bar_%env(BAR)%'] ?? ($this->privates['bar_%env(BAR)%'] = new \stdClass())), ['baz_'.$this->getEnv('string:BAR') => new \stdClass()]);
     }
 
     public function getParameter($name)
@@ -111,8 +111,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -135,8 +135,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(BAR)' => 'bar',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_errored_definition.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_errored_definition.php
index 22d6ebbf13ec..2c0f37d3ae56 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_errored_definition.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_errored_definition.php
@@ -17,17 +17,17 @@
 class Symfony_DI_PhpDumper_Errored_Definition extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->syntheticIds = array(
+        $this->services = $this->privates = [];
+        $this->syntheticIds = [
             'request' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'BAR' => 'getBARService',
             'BAR2' => 'getBAR2Service',
             'bar' => 'getBar3Service',
@@ -51,12 +51,12 @@ public function __construct()
             'runtime_error' => 'getRuntimeErrorService',
             'service_from_static_method' => 'getServiceFromStaticMethodService',
             'tagged_iterator' => 'getTaggedIteratorService',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'alias_for_alias' => 'foo',
             'alias_for_foo' => 'foo',
             'decorated' => 'decorator_service_with_name',
-        );
+        ];
     }
 
     public function compile()
@@ -71,7 +71,7 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'configurator_service' => true,
@@ -83,7 +83,7 @@ public function getRemovedIds()
             'inlined' => true,
             'new_factory' => true,
             'tagged_iterator_foo' => true,
-        );
+        ];
     }
 
     /**
@@ -244,11 +244,11 @@ protected function getFooService()
     {
         $a = ($this->services['foo.baz'] ?? $this->getFoo_BazService());
 
-        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, array('bar' => 'foo is bar', 'foobar' => 'bar'), true, $this);
+        $this->services['foo'] = $instance = \Bar\FooClass::getInstance('foo', $a, ['bar' => 'foo is bar', 'foobar' => 'bar'], true, $this);
 
         $instance->foo = 'bar';
         $instance->moo = $a;
-        $instance->qux = array('bar' => 'foo is bar', 'foobar' => 'bar');
+        $instance->qux = ['bar' => 'foo is bar', 'foobar' => 'bar'];
         $instance->setBar(($this->services['bar'] ?? $this->getBar3Service()));
         $instance->initialize();
         sc_configure($instance);
@@ -448,8 +448,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -472,12 +472,12 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
             'foo_bar' => 'foo_bar',
-        );
+        ];
     }
 
     protected function throw($message)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
index f3a66c596331..ee6e3d8205f4 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
@@ -17,7 +17,7 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
@@ -27,14 +27,14 @@ public function __construct()
         }
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\ParentNotExists' => 'getParentNotExistsService',
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C1' => 'getC1Service',
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C2' => 'getC2Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
 
         $this->privates['service_container'] = function () {
             include_once $this->targetDirs[1].'/includes/HotPath/I1.php';
@@ -56,11 +56,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3' => true,
-        );
+        ];
     }
 
     /**
@@ -135,8 +135,8 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array();
-    private $dynamicParameters = array();
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -159,8 +159,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'inline_requires' => true,
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
index 6eec371f015a..8b9703cd86c0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
@@ -17,16 +17,16 @@
 class Symfony_DI_PhpDumper_Test_Inline_Self_Ref extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'App\\Foo' => 'getFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -41,10 +41,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_json_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_json_env.php
index 59953174de1f..5b90e5b4160a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_json_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_json_env.php
@@ -17,15 +17,15 @@
 class Symfony_DI_PhpDumper_Test_JsonParameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
+        $this->services = $this->privates = [];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -40,10 +40,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     public function getParameter($name)
@@ -85,11 +85,11 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
         'hello-bar' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -119,9 +119,9 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => '["foo","bar"]',
             'env(bar)' => 'null',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
index 4ea482ee2236..5c6d4af8a547 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
@@ -17,12 +17,12 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar_service' => 'getBarServiceService',
             'foo_service' => 'getFooServiceService',
             'translator.loader_1' => 'getTranslator_Loader1Service',
@@ -31,9 +31,9 @@ public function __construct()
             'translator_1' => 'getTranslator1Service',
             'translator_2' => 'getTranslator2Service',
             'translator_3' => 'getTranslator3Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -48,14 +48,14 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'baz_service' => true,
             'translator.loader_1_locator' => true,
             'translator.loader_2_locator' => true,
             'translator.loader_3_locator' => true,
-        );
+        ];
     }
 
     /**
@@ -75,13 +75,13 @@ protected function getBarServiceService()
      */
     protected function getFooServiceService()
     {
-        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\ServiceLocator(array('bar' => function () {
+        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\ServiceLocator(['bar' => function () {
             return ($this->services['bar_service'] ?? $this->getBarServiceService());
         }, 'baz' => function (): \stdClass {
             return ($this->privates['baz_service'] ?? ($this->privates['baz_service'] = new \stdClass()));
         }, 'nil' => function () {
             return NULL;
-        }));
+        }]);
     }
 
     /**
@@ -121,9 +121,9 @@ protected function getTranslator_Loader3Service()
      */
     protected function getTranslator1Service()
     {
-        return $this->services['translator_1'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_1' => function () {
+        return $this->services['translator_1'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_1' => function () {
             return ($this->services['translator.loader_1'] ?? ($this->services['translator.loader_1'] = new \stdClass()));
-        })));
+        }]));
     }
 
     /**
@@ -133,9 +133,9 @@ protected function getTranslator1Service()
      */
     protected function getTranslator2Service()
     {
-        $this->services['translator_2'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_2' => function () {
+        $this->services['translator_2'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_2' => function () {
             return ($this->services['translator.loader_2'] ?? ($this->services['translator.loader_2'] = new \stdClass()));
-        })));
+        }]));
 
         $instance->addResource('db', ($this->services['translator.loader_2'] ?? ($this->services['translator.loader_2'] = new \stdClass())), 'nl');
 
@@ -149,9 +149,9 @@ protected function getTranslator2Service()
      */
     protected function getTranslator3Service()
     {
-        $this->services['translator_3'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(array('translator.loader_3' => function () {
+        $this->services['translator_3'] = $instance = new \Symfony\Component\DependencyInjection\Tests\Fixtures\StubbedTranslator(new \Symfony\Component\DependencyInjection\ServiceLocator(['translator.loader_3' => function () {
             return ($this->services['translator.loader_3'] ?? ($this->services['translator.loader_3'] = new \stdClass()));
-        })));
+        }]));
 
         $a = ($this->services['translator.loader_3'] ?? ($this->services['translator.loader_3'] = new \stdClass()));
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
index 24bca7e35be1..212f12dd24d9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_non_shared_lazy.php
@@ -17,16 +17,16 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -41,11 +41,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo' => true,
-        );
+        ];
     }
 
     protected function createProxy($class, \Closure $factory)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
index 559a3ecebfa3..f815c0811dce 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
@@ -17,17 +17,17 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar_service' => 'getBarServiceService',
             'foo_service' => 'getFooServiceService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -42,11 +42,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'baz_service' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
index db3a5a28153e..761d47610386 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
@@ -17,16 +17,16 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'public_foo' => 'getPublicFooService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -41,12 +41,12 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'private_bar' => true,
             'private_foo' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
index 0d3eb62b5b7a..64cc5df2580c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
@@ -17,21 +17,21 @@
 class Symfony_DI_PhpDumper_Test_Rot13Parameters extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
     private $getService;
 
     public function __construct()
     {
-        $this->getService = \Closure::fromCallable(array($this, 'getService'));
+        $this->getService = \Closure::fromCallable([$this, 'getService']);
         $this->parameters = $this->getDefaultParameters();
 
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor' => 'getRot13EnvVarProcessorService',
             'container.env_var_processors_locator' => 'getContainer_EnvVarProcessorsLocatorService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -46,11 +46,11 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             '.service_locator.GU08LT9' => true,
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
@@ -70,9 +70,9 @@ protected function getRot13EnvVarProcessorService()
      */
     protected function getContainer_EnvVarProcessorsLocatorService()
     {
-        return $this->services['container.env_var_processors_locator'] = new \Symfony\Component\DependencyInjection\Argument\ServiceLocator($this->getService, array(
-            'rot13' => array('services', 'Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor', 'getRot13EnvVarProcessorService', false),
-        ));
+        return $this->services['container.env_var_processors_locator'] = new \Symfony\Component\DependencyInjection\Argument\ServiceLocator($this->getService, [
+            'rot13' => ['services', 'Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor', 'getRot13EnvVarProcessorService', false],
+        ]);
     }
 
     public function getParameter($name)
@@ -114,10 +114,10 @@ public function getParameterBag()
         return $this->parameterBag;
     }
 
-    private $loadedDynamicParameters = array(
+    private $loadedDynamicParameters = [
         'hello' => false,
-    );
-    private $dynamicParameters = array();
+    ];
+    private $dynamicParameters = [];
 
     /**
      * Computes a dynamic parameter.
@@ -146,8 +146,8 @@ private function getDynamicParameter($name)
      */
     protected function getDefaultParameters()
     {
-        return array(
+        return [
             'env(foo)' => 'jbeyq',
-        );
+        ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_service_locator_argument.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_service_locator_argument.php
index 3a43e2ce93e0..c30a6c9e4479 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_service_locator_argument.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_service_locator_argument.php
@@ -17,22 +17,22 @@
 class Symfony_DI_PhpDumper_Service_Locator_Argument extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
     private $getService;
 
     public function __construct()
     {
-        $this->getService = \Closure::fromCallable(array($this, 'getService'));
-        $this->services = $this->privates = array();
-        $this->syntheticIds = array(
+        $this->getService = \Closure::fromCallable([$this, 'getService']);
+        $this->services = $this->privates = [];
+        $this->syntheticIds = [
             'foo5' => true,
-        );
-        $this->methodMap = array(
+        ];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'foo1' => 'getFoo1Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -47,14 +47,14 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             '.service_locator.38dy3OH' => true,
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo2' => true,
             'foo3' => true,
             'foo4' => true,
-        );
+        ];
     }
 
     /**
@@ -66,13 +66,13 @@ protected function getBarService()
     {
         $this->services['bar'] = $instance = new \stdClass();
 
-        $instance->locator = new \Symfony\Component\DependencyInjection\Argument\ServiceLocator($this->getService, array(
-            'foo1' => array('services', 'foo1', 'getFoo1Service', false),
-            'foo2' => array('privates', 'foo2', 'getFoo2Service', false),
-            'foo3' => array(false, 'foo3', 'getFoo3Service', false),
-            'foo4' => array('privates', 'foo4', NULL, 'BOOM'),
-            'foo5' => array('services', 'foo5', NULL, false),
-        ));
+        $instance->locator = new \Symfony\Component\DependencyInjection\Argument\ServiceLocator($this->getService, [
+            'foo1' => ['services', 'foo1', 'getFoo1Service', false],
+            'foo2' => ['privates', 'foo2', 'getFoo2Service', false],
+            'foo3' => [false, 'foo3', 'getFoo3Service', false],
+            'foo4' => ['privates', 'foo4', NULL, 'BOOM'],
+            'foo5' => ['services', 'foo5', NULL, false],
+        ]);
 
         return $instance;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
index e14b87a96765..b60b3b87b3de 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
@@ -17,19 +17,19 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
     private $getService;
 
     public function __construct()
     {
-        $this->getService = \Closure::fromCallable(array($this, 'getService'));
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->getService = \Closure::fromCallable([$this, 'getService']);
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => 'getTestServiceSubscriberService',
             'foo_service' => 'getFooServiceService',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -44,13 +44,13 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             '.service_locator.nZQiwdg' => true,
             '.service_locator.nZQiwdg.foo_service' => true,
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => true,
-        );
+        ];
     }
 
     /**
@@ -70,12 +70,12 @@ protected function getTestServiceSubscriberService()
      */
     protected function getFooServiceService()
     {
-        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber((new \Symfony\Component\DependencyInjection\Argument\ServiceLocator($this->getService, array(
-            'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => array('privates', 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition', 'getCustomDefinitionService', false),
-            'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => array('services', 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber', 'getTestServiceSubscriberService', false),
-            'bar' => array('services', 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber', 'getTestServiceSubscriberService', false),
-            'baz' => array('privates', 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition', 'getCustomDefinitionService', false),
-        )))->withContext('foo_service', $this));
+        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber((new \Symfony\Component\DependencyInjection\Argument\ServiceLocator($this->getService, [
+            'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => ['privates', 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition', 'getCustomDefinitionService', false],
+            'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => ['services', 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber', 'getTestServiceSubscriberService', false],
+            'bar' => ['services', 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber', 'getTestServiceSubscriberService', false],
+            'baz' => ['privates', 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition', 'getCustomDefinitionService', false],
+        ]))->withContext('foo_service', $this));
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
index a99275443393..3aa6ae94a820 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_tsantos.php
@@ -17,17 +17,17 @@
 class ProjectServiceContainer extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'tsantos_serializer' => 'getTsantosSerializerService',
-        );
-        $this->aliases = array(
+        ];
+        $this->aliases = [
             'TSantos\\Serializer\\SerializerInterface' => 'tsantos_serializer',
-        );
+        ];
     }
 
     public function compile()
@@ -42,10 +42,10 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
-        );
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
index f18de622b295..47e4b8f63432 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
@@ -17,18 +17,18 @@
 class Symfony_DI_PhpDumper_Test_Uninitialized_Reference extends Container
 {
     private $parameters;
-    private $targetDirs = array();
+    private $targetDirs = [];
 
     public function __construct()
     {
-        $this->services = $this->privates = array();
-        $this->methodMap = array(
+        $this->services = $this->privates = [];
+        $this->methodMap = [
             'bar' => 'getBarService',
             'baz' => 'getBazService',
             'foo1' => 'getFoo1Service',
-        );
+        ];
 
-        $this->aliases = array();
+        $this->aliases = [];
     }
 
     public function compile()
@@ -43,12 +43,12 @@ public function isCompiled()
 
     public function getRemovedIds()
     {
-        return array(
+        return [
             'Psr\\Container\\ContainerInterface' => true,
             'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
             'foo2' => true,
             'foo3' => true,
-        );
+        ];
     }
 
     /**
@@ -63,13 +63,13 @@ protected function getBarService()
         $instance->foo1 = ($this->services['foo1'] ?? null);
         $instance->foo2 = null;
         $instance->foo3 = ($this->privates['foo3'] ?? null);
-        $instance->closures = array(0 => function () {
+        $instance->closures = [0 => function () {
             return ($this->services['foo1'] ?? null);
         }, 1 => function () {
             return null;
         }, 2 => function () {
             return ($this->privates['foo3'] ?? null);
-        });
+        }];
         $instance->iter = new RewindableGenerator(function () {
             if (isset($this->services['foo1'])) {
                 yield 'foo1' => ($this->services['foo1'] ?? null);
diff --git a/src/Symfony/Component/Form/CHANGELOG.md b/src/Symfony/Component/Form/CHANGELOG.md
index f1cbf0ba4f87..2948d9532899 100644
--- a/src/Symfony/Component/Form/CHANGELOG.md
+++ b/src/Symfony/Component/Form/CHANGELOG.md
@@ -28,7 +28,7 @@ CHANGELOG
    {
        public static function getExtendedTypes(): iterable
        {
-           return array(FormType::class);
+           return [FormType::class];
        }
 
        // ...
diff --git a/src/Symfony/Component/Lock/Store/PdoStore.php b/src/Symfony/Component/Lock/Store/PdoStore.php
index f51149d02e64..693b798a7db9 100644
--- a/src/Symfony/Component/Lock/Store/PdoStore.php
+++ b/src/Symfony/Component/Lock/Store/PdoStore.php
@@ -61,7 +61,7 @@ class PdoStore implements StoreInterface
      *  * db_expiration_col: The column where to store the expiration [default: key_expiration]
      *  * db_username: The username when lazy-connect [default: '']
      *  * db_password: The password when lazy-connect [default: '']
-     *  * db_connection_options: An array of driver-specific connection options [default: array()]
+     *  * db_connection_options: An array of driver-specific connection options [default: []]
      *
      * @param \PDO|Connection|string $connOrDsn     A \PDO or Connection instance or DSN string or null
      * @param array                  $options       An associative array of options
diff --git a/src/Symfony/Component/OptionsResolver/OptionsResolver.php b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
index c0823e3f385b..6532fe0a0ab8 100644
--- a/src/Symfony/Component/OptionsResolver/OptionsResolver.php
+++ b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
@@ -146,7 +146,7 @@ class OptionsResolver implements Options
      * following signature:
      *
      *     $options->setDefault('database', function (OptionsResolver $resolver) {
-     *         $resolver->setDefined(array('dbname', 'host', 'port', 'user', 'pass'));
+     *         $resolver->setDefined(['dbname', 'host', 'port', 'user', 'pass']);
      *     }
      *
      * To get access to the parent options, add a second argument to the closure's
diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
index cf5685994cdb..5e36e383641d 100644
--- a/src/Symfony/Component/Process/Tests/ProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -1157,8 +1157,8 @@ public function responsesCodeProvider()
     {
         return [
             //expected output / getter / code to execute
-            //array(1,'getExitCode','exit(1);'),
-            //array(true,'isSuccessful','exit();'),
+            // [1,'getExitCode','exit(1);'],
+            // [true,'isSuccessful','exit();'],
             ['output', 'getOutput', 'echo \'output\';'],
         ];
     }
diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
index 2d12dcb968ec..61b2ed320a22 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
@@ -207,15 +207,15 @@ private function compileStaticRoutes(array $staticRoutes, array &$conditions): s
         $code = '';
 
         foreach ($staticRoutes as $url => $routes) {
-            $code .= self::export($url)." => array(\n";
+            $code .= self::export($url)." => [\n";
             foreach ($routes as $name => list($route, $hasTrailingSlash)) {
                 $code .= $this->compileRoute($route, $name, !$route->compile()->getHostVariables() ? $route->getHost() : $route->compile()->getHostRegex() ?: null, $hasTrailingSlash, false, $conditions);
             }
-            $code .= "),\n";
+            $code .= "],\n";
         }
 
         if ($code) {
-            return "\$this->staticRoutes = array(\n{$this->indent($code, 1)});\n";
+            return "\$this->staticRoutes = [\n{$this->indent($code, 1)}];\n";
         }
 
         return $code;
@@ -348,8 +348,8 @@ private function compileDynamicRoutes(RouteCollection $collection, bool $matchHo
 
         unset($state->getVars);
 
-        return "\$this->regexpList = array({$code}\n);\n"
-            ."\$this->dynamicRoutes = array(\n{$this->indent($state->routes, 1)});\n";
+        return "\$this->regexpList = [{$code}\n];\n"
+            ."\$this->dynamicRoutes = [\n{$this->indent($state->routes, 1)}];\n";
     }
 
     /**
@@ -394,7 +394,7 @@ private function compileStaticPrefixCollection(StaticPrefixCollection $tree, \st
             $state->regex .= $rx;
 
             $prevRegex = $compiledRoute->getRegex();
-            $state->routes .= sprintf("%s => array(\n%s),\n", $state->mark, $this->compileRoute($route, $name, $vars, $hasTrailingSlash, $hasTrailingVar, $conditions));
+            $state->routes .= sprintf("%s => [\n%s],\n", $state->mark, $this->compileRoute($route, $name, $vars, $hasTrailingSlash, $hasTrailingVar, $conditions));
         }
 
         return $code;
@@ -420,7 +420,7 @@ private function compileRoute(Route $route, string $name, $vars, bool $hasTraili
         }
 
         return sprintf(
-            "    array(%s, %s, %s, %s, %s, %s, %s),\n",
+            "    [%s, %s, %s, %s, %s, %s, %s],\n",
             self::export(['_route' => $name] + $defaults),
             self::export($vars),
             self::export(array_flip($route->getMethods()) ?: null),
@@ -445,7 +445,7 @@ private function getExpressionLanguage()
 
     private function indent($code, $level = 1)
     {
-        $code = preg_replace('/ => array\(\n    (array\(.+),\n\),/', ' => array($1),', $code);
+        $code = preg_replace('/ => \[\n    (\[.+),\n\],/', ' => [$1],', $code);
 
         return preg_replace('/^./m', str_repeat('    ', $level).'$0', $code);
     }
@@ -466,11 +466,11 @@ public static function export($value): string
             return str_replace("\n", '\'."\n".\'', var_export($value, true));
         }
         if (!$value) {
-            return 'array()';
+            return '[]';
         }
 
         $i = 0;
-        $export = 'array(';
+        $export = '[';
 
         foreach ($value as $k => $v) {
             if ($i === $k) {
@@ -486,6 +486,6 @@ public static function export($value): string
             $export .= self::export($v).', ';
         }
 
-        return substr_replace($export, ')', -2);
+        return substr_replace($export, ']', -2);
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
index a357b4fde7b9..65c5ce07643b 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
@@ -15,26 +15,26 @@ public function __construct(RequestContext $context)
     {
         $this->context = $context;
         $this->matchHost = true;
-        $this->staticRoutes = array(
-            '/test/baz' => array(array(array('_route' => 'baz'), null, null, null, false, false, null)),
-            '/test/baz.html' => array(array(array('_route' => 'baz2'), null, null, null, false, false, null)),
-            '/test/baz3' => array(array(array('_route' => 'baz3'), null, null, null, true, false, null)),
-            '/foofoo' => array(array(array('_route' => 'foofoo', 'def' => 'test'), null, null, null, false, false, null)),
-            '/spa ce' => array(array(array('_route' => 'space'), null, null, null, false, false, null)),
-            '/multi/new' => array(array(array('_route' => 'overridden2'), null, null, null, false, false, null)),
-            '/multi/hey' => array(array(array('_route' => 'hey'), null, null, null, true, false, null)),
-            '/ababa' => array(array(array('_route' => 'ababa'), null, null, null, false, false, null)),
-            '/route1' => array(array(array('_route' => 'route1'), 'a.example.com', null, null, false, false, null)),
-            '/c2/route2' => array(array(array('_route' => 'route2'), 'a.example.com', null, null, false, false, null)),
-            '/route4' => array(array(array('_route' => 'route4'), 'a.example.com', null, null, false, false, null)),
-            '/c2/route3' => array(array(array('_route' => 'route3'), 'b.example.com', null, null, false, false, null)),
-            '/route5' => array(array(array('_route' => 'route5'), 'c.example.com', null, null, false, false, null)),
-            '/route6' => array(array(array('_route' => 'route6'), null, null, null, false, false, null)),
-            '/route11' => array(array(array('_route' => 'route11'), '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false, false, null)),
-            '/route12' => array(array(array('_route' => 'route12', 'var1' => 'val'), '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false, false, null)),
-            '/route17' => array(array(array('_route' => 'route17'), null, null, null, false, false, null)),
-        );
-        $this->regexpList = array(
+        $this->staticRoutes = [
+            '/test/baz' => [[['_route' => 'baz'], null, null, null, false, false, null]],
+            '/test/baz.html' => [[['_route' => 'baz2'], null, null, null, false, false, null]],
+            '/test/baz3' => [[['_route' => 'baz3'], null, null, null, true, false, null]],
+            '/foofoo' => [[['_route' => 'foofoo', 'def' => 'test'], null, null, null, false, false, null]],
+            '/spa ce' => [[['_route' => 'space'], null, null, null, false, false, null]],
+            '/multi/new' => [[['_route' => 'overridden2'], null, null, null, false, false, null]],
+            '/multi/hey' => [[['_route' => 'hey'], null, null, null, true, false, null]],
+            '/ababa' => [[['_route' => 'ababa'], null, null, null, false, false, null]],
+            '/route1' => [[['_route' => 'route1'], 'a.example.com', null, null, false, false, null]],
+            '/c2/route2' => [[['_route' => 'route2'], 'a.example.com', null, null, false, false, null]],
+            '/route4' => [[['_route' => 'route4'], 'a.example.com', null, null, false, false, null]],
+            '/c2/route3' => [[['_route' => 'route3'], 'b.example.com', null, null, false, false, null]],
+            '/route5' => [[['_route' => 'route5'], 'c.example.com', null, null, false, false, null]],
+            '/route6' => [[['_route' => 'route6'], null, null, null, false, false, null]],
+            '/route11' => [[['_route' => 'route11'], '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false, false, null]],
+            '/route12' => [[['_route' => 'route12', 'var1' => 'val'], '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false, false, null]],
+            '/route17' => [[['_route' => 'route17'], null, null, null, false, false, null]],
+        ];
+        $this->regexpList = [
             0 => '{^(?'
                 .'|(?:(?:[^./]*+\\.)++)(?'
                     .'|/foo/(baz|symfony)(*:47)'
@@ -81,33 +81,33 @@ public function __construct(RequestContext $context)
                     .')'
                 .')'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            47 => array(array(array('_route' => 'foo', 'def' => 'test'), array('bar'), null, null, false, true, null)),
-            70 => array(array(array('_route' => 'bar'), array('foo'), array('GET' => 0, 'HEAD' => 1), null, false, true, null)),
-            90 => array(array(array('_route' => 'barhead'), array('foo'), array('GET' => 0), null, false, true, null)),
-            115 => array(
-                array(array('_route' => 'baz4'), array('foo'), null, null, true, true, null),
-                array(array('_route' => 'baz5'), array('foo'), array('POST' => 0), null, true, true, null),
-                array(array('_route' => 'baz.baz6'), array('foo'), array('PUT' => 0), null, true, true, null),
-            ),
-            131 => array(array(array('_route' => 'quoter'), array('quoter'), null, null, false, true, null)),
-            160 => array(array(array('_route' => 'foo1'), array('foo'), array('PUT' => 0), null, false, true, null)),
-            168 => array(array(array('_route' => 'bar1'), array('bar'), null, null, false, true, null)),
-            181 => array(array(array('_route' => 'overridden'), array('var'), null, null, false, true, null)),
-            204 => array(array(array('_route' => 'foo2'), array('foo1'), null, null, false, true, null)),
-            212 => array(array(array('_route' => 'bar2'), array('bar1'), null, null, false, true, null)),
-            248 => array(array(array('_route' => 'helloWorld', 'who' => 'World!'), array('who'), null, null, false, true, null)),
-            279 => array(array(array('_route' => 'foo3'), array('_locale', 'foo'), null, null, false, true, null)),
-            287 => array(array(array('_route' => 'bar3'), array('_locale', 'bar'), null, null, false, true, null)),
-            309 => array(array(array('_route' => 'foo4'), array('foo'), null, null, false, true, null)),
-            371 => array(array(array('_route' => 'route13'), array('var1', 'name'), null, null, false, true, null)),
-            389 => array(array(array('_route' => 'route14', 'var1' => 'val'), array('var1', 'name'), null, null, false, true, null)),
-            441 => array(array(array('_route' => 'route15'), array('name'), null, null, false, true, null)),
-            489 => array(array(array('_route' => 'route16', 'var1' => 'val'), array('name'), null, null, false, true, null)),
-            510 => array(array(array('_route' => 'a'), array(), null, null, false, false, null)),
-            531 => array(array(array('_route' => 'b'), array('var'), null, null, false, true, null)),
-            549 => array(array(array('_route' => 'c'), array('var'), null, null, false, true, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            47 => [[['_route' => 'foo', 'def' => 'test'], ['bar'], null, null, false, true, null]],
+            70 => [[['_route' => 'bar'], ['foo'], ['GET' => 0, 'HEAD' => 1], null, false, true, null]],
+            90 => [[['_route' => 'barhead'], ['foo'], ['GET' => 0], null, false, true, null]],
+            115 => [
+                [['_route' => 'baz4'], ['foo'], null, null, true, true, null],
+                [['_route' => 'baz5'], ['foo'], ['POST' => 0], null, true, true, null],
+                [['_route' => 'baz.baz6'], ['foo'], ['PUT' => 0], null, true, true, null],
+            ],
+            131 => [[['_route' => 'quoter'], ['quoter'], null, null, false, true, null]],
+            160 => [[['_route' => 'foo1'], ['foo'], ['PUT' => 0], null, false, true, null]],
+            168 => [[['_route' => 'bar1'], ['bar'], null, null, false, true, null]],
+            181 => [[['_route' => 'overridden'], ['var'], null, null, false, true, null]],
+            204 => [[['_route' => 'foo2'], ['foo1'], null, null, false, true, null]],
+            212 => [[['_route' => 'bar2'], ['bar1'], null, null, false, true, null]],
+            248 => [[['_route' => 'helloWorld', 'who' => 'World!'], ['who'], null, null, false, true, null]],
+            279 => [[['_route' => 'foo3'], ['_locale', 'foo'], null, null, false, true, null]],
+            287 => [[['_route' => 'bar3'], ['_locale', 'bar'], null, null, false, true, null]],
+            309 => [[['_route' => 'foo4'], ['foo'], null, null, false, true, null]],
+            371 => [[['_route' => 'route13'], ['var1', 'name'], null, null, false, true, null]],
+            389 => [[['_route' => 'route14', 'var1' => 'val'], ['var1', 'name'], null, null, false, true, null]],
+            441 => [[['_route' => 'route15'], ['name'], null, null, false, true, null]],
+            489 => [[['_route' => 'route16', 'var1' => 'val'], ['name'], null, null, false, true, null]],
+            510 => [[['_route' => 'a'], [], null, null, false, false, null]],
+            531 => [[['_route' => 'b'], ['var'], null, null, false, true, null]],
+            549 => [[['_route' => 'c'], ['var'], null, null, false, true, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
index c8bce667e945..d93459c4c979 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
@@ -14,7 +14,7 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Matcher\UrlMatcher
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->regexpList = array(
+        $this->regexpList = [
             0 => '{^(?'
                     .'|/c(?'
                         .'|f(?'
@@ -1769,1008 +1769,1008 @@ public function __construct(RequestContext $context)
                         .'|9c9ad/([^/]++)/([^/]++)/([^/]++)/49c9ad(*:49718)'
                     .')'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            54 => array(array(array('_route' => '_0'), array('a', 'b', 'c'), null, null, false, false, null)),
-            102 => array(array(array('_route' => '_190'), array('a', 'b', 'c'), null, null, false, false, null)),
-            147 => array(array(array('_route' => '_478'), array('a', 'b', 'c'), null, null, false, false, null)),
-            194 => array(array(array('_route' => '_259'), array('a', 'b', 'c'), null, null, false, false, null)),
-            240 => array(array(array('_route' => '_368'), array('a', 'b', 'c'), null, null, false, false, null)),
-            291 => array(array(array('_route' => '_1'), array('a', 'b', 'c'), null, null, false, false, null)),
-            337 => array(array(array('_route' => '_116'), array('a', 'b', 'c'), null, null, false, false, null)),
-            383 => array(array(array('_route' => '_490'), array('a', 'b', 'c'), null, null, false, false, null)),
-            434 => array(array(array('_route' => '_2'), array('a', 'b', 'c'), null, null, false, false, null)),
-            480 => array(array(array('_route' => '_124'), array('a', 'b', 'c'), null, null, false, false, null)),
-            526 => array(array(array('_route' => '_389'), array('a', 'b', 'c'), null, null, false, false, null)),
-            577 => array(array(array('_route' => '_8'), array('a', 'b', 'c'), null, null, false, false, null)),
-            623 => array(array(array('_route' => '_104'), array('a', 'b', 'c'), null, null, false, false, null)),
-            677 => array(array(array('_route' => '_12'), array('a', 'b', 'c'), null, null, false, false, null)),
-            722 => array(array(array('_route' => '_442'), array('a', 'b', 'c'), null, null, false, false, null)),
-            769 => array(array(array('_route' => '_253'), array('a', 'b', 'c'), null, null, false, false, null)),
-            820 => array(array(array('_route' => '_13'), array('a', 'b', 'c'), null, null, false, false, null)),
-            866 => array(array(array('_route' => '_254'), array('a', 'b', 'c'), null, null, false, false, null)),
-            912 => array(array(array('_route' => '_347'), array('a', 'b', 'c'), null, null, false, false, null)),
-            963 => array(array(array('_route' => '_16'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1009 => array(array(array('_route' => '_87'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1058 => array(array(array('_route' => '_31'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1109 => array(array(array('_route' => '_50'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1156 => array(array(array('_route' => '_219'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1203 => array(array(array('_route' => '_332'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1250 => array(array(array('_route' => '_359'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1302 => array(array(array('_route' => '_183'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1349 => array(array(array('_route' => '_500'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1401 => array(array(array('_route' => '_214'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1448 => array(array(array('_route' => '_321'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1497 => array(array(array('_route' => '_243'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1545 => array(array(array('_route' => '_328'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1596 => array(array(array('_route' => '_362'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1643 => array(array(array('_route' => '_488'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1701 => array(array(array('_route' => '_3'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1751 => array(array(array('_route' => '_102'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1797 => array(array(array('_route' => '_220'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1845 => array(array(array('_route' => '_127'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1897 => array(array(array('_route' => '_5'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1944 => array(array(array('_route' => '_242'), array('a', 'b', 'c'), null, null, false, false, null)),
-            1991 => array(array(array('_route' => '_397'), array('a', 'b', 'c'), null, null, false, false, null)),
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+            48522 => [[['_route' => '_966'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48573 => [[['_route' => '_582'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48625 => [[['_route' => '_606'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48673 => [[['_route' => '_648'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48723 => [[['_route' => '_624'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48775 => [[['_route' => '_626'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48823 => [[['_route' => '_821'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48873 => [[['_route' => '_628'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48922 => [[['_route' => '_638'], ['a', 'b', 'c'], null, null, false, false, null]],
+            48974 => [[['_route' => '_640'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49022 => [[['_route' => '_990'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49072 => [[['_route' => '_705'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49121 => [[['_route' => '_757'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49176 => [[['_route' => '_785'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49223 => [[['_route' => '_875'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49270 => [[['_route' => '_894'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49319 => [[['_route' => '_945'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49375 => [[['_route' => '_816'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49422 => [[['_route' => '_872'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49471 => [[['_route' => '_921'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49519 => [[['_route' => '_960'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49567 => [[['_route' => '_974'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49620 => [[['_route' => '_835'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49668 => [[['_route' => '_934'], ['a', 'b', 'c'], null, null, false, false, null]],
+            49718 => [[['_route' => '_869'], ['a', 'b', 'c'], null, null, false, false, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
index b0e4c02e0603..e9ff494a0c92 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
@@ -14,7 +14,7 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Tests\Fixtures\Redirec
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->regexpList = array(
+        $this->regexpList = [
             0 => '{^(?'
                     .'|/(en|fr)/(?'
                         .'|admin/post(?'
@@ -45,22 +45,22 @@ public function __construct(RequestContext $context)
                     .')'
                     .'|/(en|fr)?(*:264)'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            32 => array(array(array('_route' => 'a', '_locale' => 'en'), array('_locale'), null, null, true, false, null)),
-            46 => array(array(array('_route' => 'b', '_locale' => 'en'), array('_locale'), null, null, false, false, null)),
-            58 => array(array(array('_route' => 'c', '_locale' => 'en'), array('_locale', 'id'), null, null, false, true, null)),
-            75 => array(array(array('_route' => 'd', '_locale' => 'en'), array('_locale', 'id'), null, null, false, false, null)),
-            94 => array(array(array('_route' => 'e', '_locale' => 'en'), array('_locale', 'id'), null, null, false, false, null)),
-            110 => array(array(array('_route' => 'f', '_locale' => 'en'), array('_locale'), null, null, true, false, null)),
-            130 => array(array(array('_route' => 'g', '_locale' => 'en'), array('_locale'), null, null, false, false, null)),
-            154 => array(array(array('_route' => 'h', '_locale' => 'en'), array('_locale', 'page'), null, null, false, true, null)),
-            175 => array(array(array('_route' => 'i', '_locale' => 'en'), array('_locale', 'page'), null, null, false, true, null)),
-            202 => array(array(array('_route' => 'j', '_locale' => 'en'), array('_locale', 'id'), null, null, false, false, null)),
-            216 => array(array(array('_route' => 'k', '_locale' => 'en'), array('_locale'), null, null, false, false, null)),
-            234 => array(array(array('_route' => 'l', '_locale' => 'en'), array('_locale'), null, null, false, false, null)),
-            245 => array(array(array('_route' => 'm', '_locale' => 'en'), array('_locale'), null, null, false, false, null)),
-            264 => array(array(array('_route' => 'n', '_locale' => 'en'), array('_locale'), null, null, false, true, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            32 => [[['_route' => 'a', '_locale' => 'en'], ['_locale'], null, null, true, false, null]],
+            46 => [[['_route' => 'b', '_locale' => 'en'], ['_locale'], null, null, false, false, null]],
+            58 => [[['_route' => 'c', '_locale' => 'en'], ['_locale', 'id'], null, null, false, true, null]],
+            75 => [[['_route' => 'd', '_locale' => 'en'], ['_locale', 'id'], null, null, false, false, null]],
+            94 => [[['_route' => 'e', '_locale' => 'en'], ['_locale', 'id'], null, null, false, false, null]],
+            110 => [[['_route' => 'f', '_locale' => 'en'], ['_locale'], null, null, true, false, null]],
+            130 => [[['_route' => 'g', '_locale' => 'en'], ['_locale'], null, null, false, false, null]],
+            154 => [[['_route' => 'h', '_locale' => 'en'], ['_locale', 'page'], null, null, false, true, null]],
+            175 => [[['_route' => 'i', '_locale' => 'en'], ['_locale', 'page'], null, null, false, true, null]],
+            202 => [[['_route' => 'j', '_locale' => 'en'], ['_locale', 'id'], null, null, false, false, null]],
+            216 => [[['_route' => 'k', '_locale' => 'en'], ['_locale'], null, null, false, false, null]],
+            234 => [[['_route' => 'l', '_locale' => 'en'], ['_locale'], null, null, false, false, null]],
+            245 => [[['_route' => 'm', '_locale' => 'en'], ['_locale'], null, null, false, false, null]],
+            264 => [[['_route' => 'n', '_locale' => 'en'], ['_locale'], null, null, false, true, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
index d9102b3d6262..cd88785a07be 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
@@ -14,7 +14,7 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Matcher\UrlMatcher
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->regexpList = array(
+        $this->regexpList = [
             0 => '{^(?'
                     .'|/abc([^/]++)/(?'
                         .'|1(?'
@@ -33,14 +33,14 @@ public function __construct(RequestContext $context)
                         .')'
                     .')'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            27 => array(array(array('_route' => 'r1'), array('foo'), null, null, false, false, null)),
-            38 => array(array(array('_route' => 'r10'), array('foo'), null, null, false, false, null)),
-            46 => array(array(array('_route' => 'r100'), array('foo'), null, null, false, false, null)),
-            59 => array(array(array('_route' => 'r2'), array('foo'), null, null, false, false, null)),
-            70 => array(array(array('_route' => 'r20'), array('foo'), null, null, false, false, null)),
-            78 => array(array(array('_route' => 'r200'), array('foo'), null, null, false, false, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            27 => [[['_route' => 'r1'], ['foo'], null, null, false, false, null]],
+            38 => [[['_route' => 'r10'], ['foo'], null, null, false, false, null]],
+            46 => [[['_route' => 'r100'], ['foo'], null, null, false, false, null]],
+            59 => [[['_route' => 'r2'], ['foo'], null, null, false, false, null]],
+            70 => [[['_route' => 'r20'], ['foo'], null, null, false, false, null]],
+            78 => [[['_route' => 'r200'], ['foo'], null, null, false, false, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
index 25936e6e1683..310b9c55dee4 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
@@ -15,7 +15,7 @@ public function __construct(RequestContext $context)
     {
         $this->context = $context;
         $this->matchHost = true;
-        $this->regexpList = array(
+        $this->regexpList = [
             0 => '{^(?'
                 .'|(?i:([^\\.]++)\\.exampple\\.com)\\.(?'
                     .'|/abc([^/]++)(?'
@@ -23,12 +23,12 @@ public function __construct(RequestContext $context)
                     .')'
                 .')'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            56 => array(
-                array(array('_route' => 'r1'), array('foo', 'foo'), null, null, false, true, null),
-                array(array('_route' => 'r2'), array('foo', 'foo'), null, null, false, true, null),
-            ),
-        );
+        ];
+        $this->dynamicRoutes = [
+            56 => [
+                [['_route' => 'r1'], ['foo', 'foo'], null, null, false, true, null],
+                [['_route' => 'r2'], ['foo', 'foo'], null, null, false, true, null],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
index 310a92161ef8..397a68d82fb2 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
@@ -15,28 +15,28 @@ public function __construct(RequestContext $context)
     {
         $this->context = $context;
         $this->matchHost = true;
-        $this->staticRoutes = array(
-            '/test/baz' => array(array(array('_route' => 'baz'), null, null, null, false, false, null)),
-            '/test/baz.html' => array(array(array('_route' => 'baz2'), null, null, null, false, false, null)),
-            '/test/baz3' => array(array(array('_route' => 'baz3'), null, null, null, true, false, null)),
-            '/foofoo' => array(array(array('_route' => 'foofoo', 'def' => 'test'), null, null, null, false, false, null)),
-            '/spa ce' => array(array(array('_route' => 'space'), null, null, null, false, false, null)),
-            '/multi/new' => array(array(array('_route' => 'overridden2'), null, null, null, false, false, null)),
-            '/multi/hey' => array(array(array('_route' => 'hey'), null, null, null, true, false, null)),
-            '/ababa' => array(array(array('_route' => 'ababa'), null, null, null, false, false, null)),
-            '/route1' => array(array(array('_route' => 'route1'), 'a.example.com', null, null, false, false, null)),
-            '/c2/route2' => array(array(array('_route' => 'route2'), 'a.example.com', null, null, false, false, null)),
-            '/route4' => array(array(array('_route' => 'route4'), 'a.example.com', null, null, false, false, null)),
-            '/c2/route3' => array(array(array('_route' => 'route3'), 'b.example.com', null, null, false, false, null)),
-            '/route5' => array(array(array('_route' => 'route5'), 'c.example.com', null, null, false, false, null)),
-            '/route6' => array(array(array('_route' => 'route6'), null, null, null, false, false, null)),
-            '/route11' => array(array(array('_route' => 'route11'), '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false, false, null)),
-            '/route12' => array(array(array('_route' => 'route12', 'var1' => 'val'), '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false, false, null)),
-            '/route17' => array(array(array('_route' => 'route17'), null, null, null, false, false, null)),
-            '/secure' => array(array(array('_route' => 'secure'), null, null, array('https' => 0), false, false, null)),
-            '/nonsecure' => array(array(array('_route' => 'nonsecure'), null, null, array('http' => 0), false, false, null)),
-        );
-        $this->regexpList = array(
+        $this->staticRoutes = [
+            '/test/baz' => [[['_route' => 'baz'], null, null, null, false, false, null]],
+            '/test/baz.html' => [[['_route' => 'baz2'], null, null, null, false, false, null]],
+            '/test/baz3' => [[['_route' => 'baz3'], null, null, null, true, false, null]],
+            '/foofoo' => [[['_route' => 'foofoo', 'def' => 'test'], null, null, null, false, false, null]],
+            '/spa ce' => [[['_route' => 'space'], null, null, null, false, false, null]],
+            '/multi/new' => [[['_route' => 'overridden2'], null, null, null, false, false, null]],
+            '/multi/hey' => [[['_route' => 'hey'], null, null, null, true, false, null]],
+            '/ababa' => [[['_route' => 'ababa'], null, null, null, false, false, null]],
+            '/route1' => [[['_route' => 'route1'], 'a.example.com', null, null, false, false, null]],
+            '/c2/route2' => [[['_route' => 'route2'], 'a.example.com', null, null, false, false, null]],
+            '/route4' => [[['_route' => 'route4'], 'a.example.com', null, null, false, false, null]],
+            '/c2/route3' => [[['_route' => 'route3'], 'b.example.com', null, null, false, false, null]],
+            '/route5' => [[['_route' => 'route5'], 'c.example.com', null, null, false, false, null]],
+            '/route6' => [[['_route' => 'route6'], null, null, null, false, false, null]],
+            '/route11' => [[['_route' => 'route11'], '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false, false, null]],
+            '/route12' => [[['_route' => 'route12', 'var1' => 'val'], '#^(?P<var1>[^\\.]++)\\.example\\.com$#sDi', null, null, false, false, null]],
+            '/route17' => [[['_route' => 'route17'], null, null, null, false, false, null]],
+            '/secure' => [[['_route' => 'secure'], null, null, ['https' => 0], false, false, null]],
+            '/nonsecure' => [[['_route' => 'nonsecure'], null, null, ['http' => 0], false, false, null]],
+        ];
+        $this->regexpList = [
             0 => '{^(?'
                 .'|(?:(?:[^./]*+\\.)++)(?'
                     .'|/foo/(baz|symfony)(*:47)'
@@ -83,33 +83,33 @@ public function __construct(RequestContext $context)
                     .')'
                 .')'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            47 => array(array(array('_route' => 'foo', 'def' => 'test'), array('bar'), null, null, false, true, null)),
-            70 => array(array(array('_route' => 'bar'), array('foo'), array('GET' => 0, 'HEAD' => 1), null, false, true, null)),
-            90 => array(array(array('_route' => 'barhead'), array('foo'), array('GET' => 0), null, false, true, null)),
-            115 => array(
-                array(array('_route' => 'baz4'), array('foo'), null, null, true, true, null),
-                array(array('_route' => 'baz5'), array('foo'), array('POST' => 0), null, true, true, null),
-                array(array('_route' => 'baz.baz6'), array('foo'), array('PUT' => 0), null, true, true, null),
-            ),
-            131 => array(array(array('_route' => 'quoter'), array('quoter'), null, null, false, true, null)),
-            160 => array(array(array('_route' => 'foo1'), array('foo'), array('PUT' => 0), null, false, true, null)),
-            168 => array(array(array('_route' => 'bar1'), array('bar'), null, null, false, true, null)),
-            181 => array(array(array('_route' => 'overridden'), array('var'), null, null, false, true, null)),
-            204 => array(array(array('_route' => 'foo2'), array('foo1'), null, null, false, true, null)),
-            212 => array(array(array('_route' => 'bar2'), array('bar1'), null, null, false, true, null)),
-            248 => array(array(array('_route' => 'helloWorld', 'who' => 'World!'), array('who'), null, null, false, true, null)),
-            279 => array(array(array('_route' => 'foo3'), array('_locale', 'foo'), null, null, false, true, null)),
-            287 => array(array(array('_route' => 'bar3'), array('_locale', 'bar'), null, null, false, true, null)),
-            309 => array(array(array('_route' => 'foo4'), array('foo'), null, null, false, true, null)),
-            371 => array(array(array('_route' => 'route13'), array('var1', 'name'), null, null, false, true, null)),
-            389 => array(array(array('_route' => 'route14', 'var1' => 'val'), array('var1', 'name'), null, null, false, true, null)),
-            441 => array(array(array('_route' => 'route15'), array('name'), null, null, false, true, null)),
-            489 => array(array(array('_route' => 'route16', 'var1' => 'val'), array('name'), null, null, false, true, null)),
-            510 => array(array(array('_route' => 'a'), array(), null, null, false, false, null)),
-            531 => array(array(array('_route' => 'b'), array('var'), null, null, false, true, null)),
-            549 => array(array(array('_route' => 'c'), array('var'), null, null, false, true, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            47 => [[['_route' => 'foo', 'def' => 'test'], ['bar'], null, null, false, true, null]],
+            70 => [[['_route' => 'bar'], ['foo'], ['GET' => 0, 'HEAD' => 1], null, false, true, null]],
+            90 => [[['_route' => 'barhead'], ['foo'], ['GET' => 0], null, false, true, null]],
+            115 => [
+                [['_route' => 'baz4'], ['foo'], null, null, true, true, null],
+                [['_route' => 'baz5'], ['foo'], ['POST' => 0], null, true, true, null],
+                [['_route' => 'baz.baz6'], ['foo'], ['PUT' => 0], null, true, true, null],
+            ],
+            131 => [[['_route' => 'quoter'], ['quoter'], null, null, false, true, null]],
+            160 => [[['_route' => 'foo1'], ['foo'], ['PUT' => 0], null, false, true, null]],
+            168 => [[['_route' => 'bar1'], ['bar'], null, null, false, true, null]],
+            181 => [[['_route' => 'overridden'], ['var'], null, null, false, true, null]],
+            204 => [[['_route' => 'foo2'], ['foo1'], null, null, false, true, null]],
+            212 => [[['_route' => 'bar2'], ['bar1'], null, null, false, true, null]],
+            248 => [[['_route' => 'helloWorld', 'who' => 'World!'], ['who'], null, null, false, true, null]],
+            279 => [[['_route' => 'foo3'], ['_locale', 'foo'], null, null, false, true, null]],
+            287 => [[['_route' => 'bar3'], ['_locale', 'bar'], null, null, false, true, null]],
+            309 => [[['_route' => 'foo4'], ['foo'], null, null, false, true, null]],
+            371 => [[['_route' => 'route13'], ['var1', 'name'], null, null, false, true, null]],
+            389 => [[['_route' => 'route14', 'var1' => 'val'], ['var1', 'name'], null, null, false, true, null]],
+            441 => [[['_route' => 'route15'], ['name'], null, null, false, true, null]],
+            489 => [[['_route' => 'route16', 'var1' => 'val'], ['name'], null, null, false, true, null]],
+            510 => [[['_route' => 'a'], [], null, null, false, false, null]],
+            531 => [[['_route' => 'b'], ['var'], null, null, false, true, null]],
+            549 => [[['_route' => 'c'], ['var'], null, null, false, true, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
index 9cc1594f0885..0792a8f3be34 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
@@ -14,18 +14,18 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Matcher\UrlMatcher
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->staticRoutes = array(
-            '/rootprefix/test' => array(array(array('_route' => 'static'), null, null, null, false, false, null)),
-            '/with-condition' => array(array(array('_route' => 'with-condition'), null, null, null, false, false, -1)),
-        );
-        $this->regexpList = array(
+        $this->staticRoutes = [
+            '/rootprefix/test' => [[['_route' => 'static'], null, null, null, false, false, null]],
+            '/with-condition' => [[['_route' => 'with-condition'], null, null, null, false, false, -1]],
+        ];
+        $this->regexpList = [
             0 => '{^(?'
                     .'|/rootprefix/([^/]++)(*:27)'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            27 => array(array(array('_route' => 'dynamic'), array('var'), null, null, false, true, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            27 => [[['_route' => 'dynamic'], ['var'], null, null, false, true, null]],
+        ];
         $this->checkCondition = static function ($condition, $context, $request) {
             switch ($condition) {
                 case -1: return ($context->getMethod() == "GET");
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
index 3f099d60c354..4b0dc156a359 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher4.php
@@ -14,15 +14,15 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Matcher\UrlMatcher
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->staticRoutes = array(
-            '/just_head' => array(array(array('_route' => 'just_head'), null, array('HEAD' => 0), null, false, false, null)),
-            '/head_and_get' => array(array(array('_route' => 'head_and_get'), null, array('HEAD' => 0, 'GET' => 1), null, false, false, null)),
-            '/get_and_head' => array(array(array('_route' => 'get_and_head'), null, array('GET' => 0, 'HEAD' => 1), null, false, false, null)),
-            '/post_and_head' => array(array(array('_route' => 'post_and_head'), null, array('POST' => 0, 'HEAD' => 1), null, false, false, null)),
-            '/put_and_post' => array(
-                array(array('_route' => 'put_and_post'), null, array('PUT' => 0, 'POST' => 1), null, false, false, null),
-                array(array('_route' => 'put_and_get_and_head'), null, array('PUT' => 0, 'GET' => 1, 'HEAD' => 2), null, false, false, null),
-            ),
-        );
+        $this->staticRoutes = [
+            '/just_head' => [[['_route' => 'just_head'], null, ['HEAD' => 0], null, false, false, null]],
+            '/head_and_get' => [[['_route' => 'head_and_get'], null, ['HEAD' => 0, 'GET' => 1], null, false, false, null]],
+            '/get_and_head' => [[['_route' => 'get_and_head'], null, ['GET' => 0, 'HEAD' => 1], null, false, false, null]],
+            '/post_and_head' => [[['_route' => 'post_and_head'], null, ['POST' => 0, 'HEAD' => 1], null, false, false, null]],
+            '/put_and_post' => [
+                [['_route' => 'put_and_post'], null, ['PUT' => 0, 'POST' => 1], null, false, false, null],
+                [['_route' => 'put_and_get_and_head'], null, ['PUT' => 0, 'GET' => 1, 'HEAD' => 2], null, false, false, null],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
index a33ea830123e..a11d55a9fb51 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
@@ -14,29 +14,29 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Tests\Fixtures\Redirec
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->staticRoutes = array(
-            '/a/11' => array(array(array('_route' => 'a_first'), null, null, null, false, false, null)),
-            '/a/22' => array(array(array('_route' => 'a_second'), null, null, null, false, false, null)),
-            '/a/333' => array(array(array('_route' => 'a_third'), null, null, null, false, false, null)),
-            '/a/44' => array(array(array('_route' => 'a_fourth'), null, null, null, true, false, null)),
-            '/a/55' => array(array(array('_route' => 'a_fifth'), null, null, null, true, false, null)),
-            '/a/66' => array(array(array('_route' => 'a_sixth'), null, null, null, true, false, null)),
-            '/nested/group/a' => array(array(array('_route' => 'nested_a'), null, null, null, true, false, null)),
-            '/nested/group/b' => array(array(array('_route' => 'nested_b'), null, null, null, true, false, null)),
-            '/nested/group/c' => array(array(array('_route' => 'nested_c'), null, null, null, true, false, null)),
-            '/slashed/group' => array(array(array('_route' => 'slashed_a'), null, null, null, true, false, null)),
-            '/slashed/group/b' => array(array(array('_route' => 'slashed_b'), null, null, null, true, false, null)),
-            '/slashed/group/c' => array(array(array('_route' => 'slashed_c'), null, null, null, true, false, null)),
-        );
-        $this->regexpList = array(
+        $this->staticRoutes = [
+            '/a/11' => [[['_route' => 'a_first'], null, null, null, false, false, null]],
+            '/a/22' => [[['_route' => 'a_second'], null, null, null, false, false, null]],
+            '/a/333' => [[['_route' => 'a_third'], null, null, null, false, false, null]],
+            '/a/44' => [[['_route' => 'a_fourth'], null, null, null, true, false, null]],
+            '/a/55' => [[['_route' => 'a_fifth'], null, null, null, true, false, null]],
+            '/a/66' => [[['_route' => 'a_sixth'], null, null, null, true, false, null]],
+            '/nested/group/a' => [[['_route' => 'nested_a'], null, null, null, true, false, null]],
+            '/nested/group/b' => [[['_route' => 'nested_b'], null, null, null, true, false, null]],
+            '/nested/group/c' => [[['_route' => 'nested_c'], null, null, null, true, false, null]],
+            '/slashed/group' => [[['_route' => 'slashed_a'], null, null, null, true, false, null]],
+            '/slashed/group/b' => [[['_route' => 'slashed_b'], null, null, null, true, false, null]],
+            '/slashed/group/c' => [[['_route' => 'slashed_c'], null, null, null, true, false, null]],
+        ];
+        $this->regexpList = [
             0 => '{^(?'
                     .'|/([^/]++)(*:16)'
                     .'|/nested/([^/]++)(*:39)'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            16 => array(array(array('_route' => 'a_wildcard'), array('param'), null, null, false, true, null)),
-            39 => array(array(array('_route' => 'nested_wildcard'), array('param'), null, null, false, true, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            16 => [[['_route' => 'a_wildcard'], ['param'], null, null, false, true, null]],
+            39 => [[['_route' => 'nested_wildcard'], ['param'], null, null, false, true, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
index 02a484037f51..f99c8fe60662 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
@@ -14,17 +14,17 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Matcher\UrlMatcher
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->staticRoutes = array(
-            '/trailing/simple/no-methods' => array(array(array('_route' => 'simple_trailing_slash_no_methods'), null, null, null, true, false, null)),
-            '/trailing/simple/get-method' => array(array(array('_route' => 'simple_trailing_slash_GET_method'), null, array('GET' => 0), null, true, false, null)),
-            '/trailing/simple/head-method' => array(array(array('_route' => 'simple_trailing_slash_HEAD_method'), null, array('HEAD' => 0), null, true, false, null)),
-            '/trailing/simple/post-method' => array(array(array('_route' => 'simple_trailing_slash_POST_method'), null, array('POST' => 0), null, true, false, null)),
-            '/not-trailing/simple/no-methods' => array(array(array('_route' => 'simple_not_trailing_slash_no_methods'), null, null, null, false, false, null)),
-            '/not-trailing/simple/get-method' => array(array(array('_route' => 'simple_not_trailing_slash_GET_method'), null, array('GET' => 0), null, false, false, null)),
-            '/not-trailing/simple/head-method' => array(array(array('_route' => 'simple_not_trailing_slash_HEAD_method'), null, array('HEAD' => 0), null, false, false, null)),
-            '/not-trailing/simple/post-method' => array(array(array('_route' => 'simple_not_trailing_slash_POST_method'), null, array('POST' => 0), null, false, false, null)),
-        );
-        $this->regexpList = array(
+        $this->staticRoutes = [
+            '/trailing/simple/no-methods' => [[['_route' => 'simple_trailing_slash_no_methods'], null, null, null, true, false, null]],
+            '/trailing/simple/get-method' => [[['_route' => 'simple_trailing_slash_GET_method'], null, ['GET' => 0], null, true, false, null]],
+            '/trailing/simple/head-method' => [[['_route' => 'simple_trailing_slash_HEAD_method'], null, ['HEAD' => 0], null, true, false, null]],
+            '/trailing/simple/post-method' => [[['_route' => 'simple_trailing_slash_POST_method'], null, ['POST' => 0], null, true, false, null]],
+            '/not-trailing/simple/no-methods' => [[['_route' => 'simple_not_trailing_slash_no_methods'], null, null, null, false, false, null]],
+            '/not-trailing/simple/get-method' => [[['_route' => 'simple_not_trailing_slash_GET_method'], null, ['GET' => 0], null, false, false, null]],
+            '/not-trailing/simple/head-method' => [[['_route' => 'simple_not_trailing_slash_HEAD_method'], null, ['HEAD' => 0], null, false, false, null]],
+            '/not-trailing/simple/post-method' => [[['_route' => 'simple_not_trailing_slash_POST_method'], null, ['POST' => 0], null, false, false, null]],
+        ];
+        $this->regexpList = [
             0 => '{^(?'
                     .'|/trailing/regex/(?'
                         .'|no\\-methods/([^/]++)(*:46)'
@@ -39,16 +39,16 @@ public function __construct(RequestContext $context)
                         .'|post\\-method/([^/]++)(*:269)'
                     .')'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            46 => array(array(array('_route' => 'regex_trailing_slash_no_methods'), array('param'), null, null, true, true, null)),
-            73 => array(array(array('_route' => 'regex_trailing_slash_GET_method'), array('param'), array('GET' => 0), null, true, true, null)),
-            101 => array(array(array('_route' => 'regex_trailing_slash_HEAD_method'), array('param'), array('HEAD' => 0), null, true, true, null)),
-            130 => array(array(array('_route' => 'regex_trailing_slash_POST_method'), array('param'), array('POST' => 0), null, true, true, null)),
-            183 => array(array(array('_route' => 'regex_not_trailing_slash_no_methods'), array('param'), null, null, false, true, null)),
-            211 => array(array(array('_route' => 'regex_not_trailing_slash_GET_method'), array('param'), array('GET' => 0), null, false, true, null)),
-            240 => array(array(array('_route' => 'regex_not_trailing_slash_HEAD_method'), array('param'), array('HEAD' => 0), null, false, true, null)),
-            269 => array(array(array('_route' => 'regex_not_trailing_slash_POST_method'), array('param'), array('POST' => 0), null, false, true, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            46 => [[['_route' => 'regex_trailing_slash_no_methods'], ['param'], null, null, true, true, null]],
+            73 => [[['_route' => 'regex_trailing_slash_GET_method'], ['param'], ['GET' => 0], null, true, true, null]],
+            101 => [[['_route' => 'regex_trailing_slash_HEAD_method'], ['param'], ['HEAD' => 0], null, true, true, null]],
+            130 => [[['_route' => 'regex_trailing_slash_POST_method'], ['param'], ['POST' => 0], null, true, true, null]],
+            183 => [[['_route' => 'regex_not_trailing_slash_no_methods'], ['param'], null, null, false, true, null]],
+            211 => [[['_route' => 'regex_not_trailing_slash_GET_method'], ['param'], ['GET' => 0], null, false, true, null]],
+            240 => [[['_route' => 'regex_not_trailing_slash_HEAD_method'], ['param'], ['HEAD' => 0], null, false, true, null]],
+            269 => [[['_route' => 'regex_not_trailing_slash_POST_method'], ['param'], ['POST' => 0], null, false, true, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
index 1866bf42b07b..f44b13bce91d 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
@@ -14,17 +14,17 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Tests\Fixtures\Redirec
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->staticRoutes = array(
-            '/trailing/simple/no-methods' => array(array(array('_route' => 'simple_trailing_slash_no_methods'), null, null, null, true, false, null)),
-            '/trailing/simple/get-method' => array(array(array('_route' => 'simple_trailing_slash_GET_method'), null, array('GET' => 0), null, true, false, null)),
-            '/trailing/simple/head-method' => array(array(array('_route' => 'simple_trailing_slash_HEAD_method'), null, array('HEAD' => 0), null, true, false, null)),
-            '/trailing/simple/post-method' => array(array(array('_route' => 'simple_trailing_slash_POST_method'), null, array('POST' => 0), null, true, false, null)),
-            '/not-trailing/simple/no-methods' => array(array(array('_route' => 'simple_not_trailing_slash_no_methods'), null, null, null, false, false, null)),
-            '/not-trailing/simple/get-method' => array(array(array('_route' => 'simple_not_trailing_slash_GET_method'), null, array('GET' => 0), null, false, false, null)),
-            '/not-trailing/simple/head-method' => array(array(array('_route' => 'simple_not_trailing_slash_HEAD_method'), null, array('HEAD' => 0), null, false, false, null)),
-            '/not-trailing/simple/post-method' => array(array(array('_route' => 'simple_not_trailing_slash_POST_method'), null, array('POST' => 0), null, false, false, null)),
-        );
-        $this->regexpList = array(
+        $this->staticRoutes = [
+            '/trailing/simple/no-methods' => [[['_route' => 'simple_trailing_slash_no_methods'], null, null, null, true, false, null]],
+            '/trailing/simple/get-method' => [[['_route' => 'simple_trailing_slash_GET_method'], null, ['GET' => 0], null, true, false, null]],
+            '/trailing/simple/head-method' => [[['_route' => 'simple_trailing_slash_HEAD_method'], null, ['HEAD' => 0], null, true, false, null]],
+            '/trailing/simple/post-method' => [[['_route' => 'simple_trailing_slash_POST_method'], null, ['POST' => 0], null, true, false, null]],
+            '/not-trailing/simple/no-methods' => [[['_route' => 'simple_not_trailing_slash_no_methods'], null, null, null, false, false, null]],
+            '/not-trailing/simple/get-method' => [[['_route' => 'simple_not_trailing_slash_GET_method'], null, ['GET' => 0], null, false, false, null]],
+            '/not-trailing/simple/head-method' => [[['_route' => 'simple_not_trailing_slash_HEAD_method'], null, ['HEAD' => 0], null, false, false, null]],
+            '/not-trailing/simple/post-method' => [[['_route' => 'simple_not_trailing_slash_POST_method'], null, ['POST' => 0], null, false, false, null]],
+        ];
+        $this->regexpList = [
             0 => '{^(?'
                     .'|/trailing/regex/(?'
                         .'|no\\-methods/([^/]++)(*:46)'
@@ -39,16 +39,16 @@ public function __construct(RequestContext $context)
                         .'|post\\-method/([^/]++)(*:269)'
                     .')'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            46 => array(array(array('_route' => 'regex_trailing_slash_no_methods'), array('param'), null, null, true, true, null)),
-            73 => array(array(array('_route' => 'regex_trailing_slash_GET_method'), array('param'), array('GET' => 0), null, true, true, null)),
-            101 => array(array(array('_route' => 'regex_trailing_slash_HEAD_method'), array('param'), array('HEAD' => 0), null, true, true, null)),
-            130 => array(array(array('_route' => 'regex_trailing_slash_POST_method'), array('param'), array('POST' => 0), null, true, true, null)),
-            183 => array(array(array('_route' => 'regex_not_trailing_slash_no_methods'), array('param'), null, null, false, true, null)),
-            211 => array(array(array('_route' => 'regex_not_trailing_slash_GET_method'), array('param'), array('GET' => 0), null, false, true, null)),
-            240 => array(array(array('_route' => 'regex_not_trailing_slash_HEAD_method'), array('param'), array('HEAD' => 0), null, false, true, null)),
-            269 => array(array(array('_route' => 'regex_not_trailing_slash_POST_method'), array('param'), array('POST' => 0), null, false, true, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            46 => [[['_route' => 'regex_trailing_slash_no_methods'], ['param'], null, null, true, true, null]],
+            73 => [[['_route' => 'regex_trailing_slash_GET_method'], ['param'], ['GET' => 0], null, true, true, null]],
+            101 => [[['_route' => 'regex_trailing_slash_HEAD_method'], ['param'], ['HEAD' => 0], null, true, true, null]],
+            130 => [[['_route' => 'regex_trailing_slash_POST_method'], ['param'], ['POST' => 0], null, true, true, null]],
+            183 => [[['_route' => 'regex_not_trailing_slash_no_methods'], ['param'], null, null, false, true, null]],
+            211 => [[['_route' => 'regex_not_trailing_slash_GET_method'], ['param'], ['GET' => 0], null, false, true, null]],
+            240 => [[['_route' => 'regex_not_trailing_slash_HEAD_method'], ['param'], ['HEAD' => 0], null, false, true, null]],
+            269 => [[['_route' => 'regex_not_trailing_slash_POST_method'], ['param'], ['POST' => 0], null, false, true, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
index 7605389e6094..ffac5d2d9252 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
@@ -14,7 +14,7 @@ class ProjectUrlMatcher extends Symfony\Component\Routing\Matcher\UrlMatcher
     public function __construct(RequestContext $context)
     {
         $this->context = $context;
-        $this->regexpList = array(
+        $this->regexpList = [
             0 => '{^(?'
                     .'|/(a)(*:11)'
                 .')/?$}sD',
@@ -24,11 +24,11 @@ public function __construct(RequestContext $context)
             22 => '{^(?'
                     .'|/(.)(*:33)'
                 .')/?$}sD',
-        );
-        $this->dynamicRoutes = array(
-            11 => array(array(array('_route' => 'a'), array('a'), null, null, false, true, null)),
-            22 => array(array(array('_route' => 'b'), array('a'), null, null, false, true, null)),
-            33 => array(array(array('_route' => 'c'), array('a'), null, null, false, true, null)),
-        );
+        ];
+        $this->dynamicRoutes = [
+            11 => [[['_route' => 'a'], ['a'], null, null, false, true, null]],
+            22 => [[['_route' => 'b'], ['a'], null, null, false, true, null]],
+            33 => [[['_route' => 'c'], ['a'], null, null, false, true, null]],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher9.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher9.php
index 9ccd0227eb4f..5716496149ed 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher9.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher9.php
@@ -15,12 +15,12 @@ public function __construct(RequestContext $context)
     {
         $this->context = $context;
         $this->matchHost = true;
-        $this->staticRoutes = array(
-            '/' => array(
-                array(array('_route' => 'a'), '#^(?P<d>[^\\.]++)\\.e\\.c\\.b\\.a$#sDi', null, null, false, false, null),
-                array(array('_route' => 'c'), '#^(?P<e>[^\\.]++)\\.e\\.c\\.b\\.a$#sDi', null, null, false, false, null),
-                array(array('_route' => 'b'), 'd.c.b.a', null, null, false, false, null),
-            ),
-        );
+        $this->staticRoutes = [
+            '/' => [
+                [['_route' => 'a'], '#^(?P<d>[^\\.]++)\\.e\\.c\\.b\\.a$#sDi', null, null, false, false, null],
+                [['_route' => 'c'], '#^(?P<e>[^\\.]++)\\.e\\.c\\.b\\.a$#sDi', null, null, false, false, null],
+                [['_route' => 'b'], 'd.c.b.a', null, null, false, false, null],
+            ],
+        ];
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Tests/SecurityTest.php b/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
index dbcca1500f50..83d876623b8c 100644
--- a/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/SecurityTest.php
@@ -64,7 +64,7 @@ public function getUserTests()
 
         yield ['string_username', null];
 
-        //yield array(new StringishUser(), null); // 5.0 behavior
+        //yield [new StringishUser(), null]; // 5.0 behavior
 
         $user = new User('nice_user', 'foo');
         yield [$user, $user];
diff --git a/src/Symfony/Component/Security/Http/FirewallMapInterface.php b/src/Symfony/Component/Security/Http/FirewallMapInterface.php
index be7a78ccdb88..6704940153b7 100644
--- a/src/Symfony/Component/Security/Http/FirewallMapInterface.php
+++ b/src/Symfony/Component/Security/Http/FirewallMapInterface.php
@@ -33,7 +33,7 @@ interface FirewallMapInterface
      * If there is no logout listener, the third element of the outer array
      * must be null.
      *
-     * @return array of the format array(array(AuthenticationListener), ExceptionListener, LogoutListener)
+     * @return array of the format [[AuthenticationListener], ExceptionListener, LogoutListener]
      */
     public function getListeners(Request $request);
 }
diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index 86a844e53519..9c7c01b42aa7 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -431,7 +431,7 @@ private function buildXml(\DOMNode $parentNode, $data, string $xmlRootNodeName =
                         /*
                          * Create nodes to append to $parentNode based on the $key of this array
                          * Produces <xml><item>0</item><item>1</item></xml>
-                         * From array("item" => array(0,1));.
+                         * From ["item" => [0,1]];.
                          */
                         foreach ($data as $subData) {
                             $append = $this->appendNode($parentNode, $subData, $key);
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
index 34b02fed1d3e..300c7f1b3c68 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -239,10 +239,10 @@ protected function isCircularReference($object, &$context)
      *
      * @throws CircularReferenceException
      */
-    protected function handleCircularReference($object/*, string $format = null, array $context = array()*/)
+    protected function handleCircularReference($object/*, string $format = null, array $context = []*/)
     {
         if (\func_num_args() < 2 && __CLASS__ !== \get_class($this) && __CLASS__ !== (new \ReflectionMethod($this, __FUNCTION__))->getDeclaringClass()->getName() && !$this instanceof \PHPUnit\Framework\MockObject\MockObject && !$this instanceof \Prophecy\Prophecy\ProphecySubjectInterface) {
-            @trigger_error(sprintf('The "%s()" method will have two new "string $format = null" and "array $context = array()" arguments in version 5.0, not defining it is deprecated since Symfony 4.2.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s()" method will have two new "string $format = null" and "array $context = []" arguments in version 5.0, not defining it is deprecated since Symfony 4.2.', __METHOD__), E_USER_DEPRECATED);
         }
         $format = \func_num_args() > 1 ? func_get_arg(1) : null;
         $context = \func_num_args() > 2 ? func_get_arg(2) : [];
diff --git a/src/Symfony/Component/VarDumper/Tests/Fixtures/dumb-var.php b/src/Symfony/Component/VarDumper/Tests/Fixtures/dumb-var.php
index 780f3b28d1d7..dcce2372431f 100644
--- a/src/Symfony/Component/VarDumper/Tests/Fixtures/dumb-var.php
+++ b/src/Symfony/Component/VarDumper/Tests/Fixtures/dumb-var.php
@@ -14,19 +14,19 @@ class DumbFoo
 
 $g = fopen(__FILE__, 'r');
 
-$var = array(
+$var = [
     'number' => 1, null,
     'const' => 1.1, true, false, NAN, INF, -INF, PHP_INT_MAX,
     'str' => "déjà\n", "\xE9\x00test\t\ning",
-    '[]' => array(),
+    '[]' => [],
     'res' => $g,
     'obj' => $foo,
     'closure' => function ($a, \PDO &$b = null) {},
     'line' => __LINE__ - 1,
-    'nobj' => array((object) array()),
-);
+    'nobj' => [(object) []],
+];
 
-$r = array();
+$r = [];
 $r[] = &$r;
 
 $var['recurs'] = &$r;
diff --git a/src/Symfony/Contracts/Service/ServiceSubscriberInterface.php b/src/Symfony/Contracts/Service/ServiceSubscriberInterface.php
index cffccadb547a..8bb320f5b32d 100644
--- a/src/Symfony/Contracts/Service/ServiceSubscriberInterface.php
+++ b/src/Symfony/Contracts/Service/ServiceSubscriberInterface.php
@@ -33,19 +33,19 @@ interface ServiceSubscriberInterface
      *
      * For mandatory dependencies:
      *
-     *  * array('logger' => 'Psr\Log\LoggerInterface') means the objects use the "logger" name
+     *  * ['logger' => 'Psr\Log\LoggerInterface'] means the objects use the "logger" name
      *    internally to fetch a service which must implement Psr\Log\LoggerInterface.
-     *  * array('loggers' => 'Psr\Log\LoggerInterface[]') means the objects use the "loggers" name
+     *  * ['loggers' => 'Psr\Log\LoggerInterface[]'] means the objects use the "loggers" name
      *    internally to fetch an iterable of Psr\Log\LoggerInterface instances.
-     *  * array('Psr\Log\LoggerInterface') is a shortcut for
-     *  * array('Psr\Log\LoggerInterface' => 'Psr\Log\LoggerInterface')
+     *  * ['Psr\Log\LoggerInterface'] is a shortcut for
+     *  * ['Psr\Log\LoggerInterface' => 'Psr\Log\LoggerInterface']
      *
      * otherwise:
      *
-     *  * array('logger' => '?Psr\Log\LoggerInterface') denotes an optional dependency
-     *  * array('loggers' => '?Psr\Log\LoggerInterface[]') denotes an optional iterable dependency
-     *  * array('?Psr\Log\LoggerInterface') is a shortcut for
-     *  * array('Psr\Log\LoggerInterface' => '?Psr\Log\LoggerInterface')
+     *  * ['logger' => '?Psr\Log\LoggerInterface'] denotes an optional dependency
+     *  * ['loggers' => '?Psr\Log\LoggerInterface[]'] denotes an optional iterable dependency
+     *  * ['?Psr\Log\LoggerInterface'] is a shortcut for
+     *  * ['Psr\Log\LoggerInterface' => '?Psr\Log\LoggerInterface']
      *
      * @return array The required service types, optionally keyed by service names
      */

From b714419faf0da05b8887a8d28e5228a5cf600a9f Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Wed, 16 Jan 2019 23:54:03 +0100
Subject: [PATCH 047/103] ensure compatibility with older PHPUnit mocks

---
 .../FrameworkBundle/Tests/Controller/ControllerTraitTest.php | 4 +++-
 .../HttpKernel/Tests/EventListener/ProfilerListenerTest.php  | 5 ++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
index 36b6bd95b7ec..01e36d0b7158 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
@@ -14,6 +14,7 @@
 use Symfony\Bundle\FrameworkBundle\Controller\ControllerTrait;
 use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
 use Symfony\Component\DependencyInjection\Container;
+use Symfony\Component\Form\Form;
 use Symfony\Component\HttpFoundation\BinaryFileResponse;
 use Symfony\Component\HttpFoundation\File\File;
 use Symfony\Component\HttpFoundation\JsonResponse;
@@ -486,7 +487,8 @@ public function testCreateNotFoundException()
 
     public function testCreateForm()
     {
-        $form = $this->getMockBuilder('Symfony\Component\Form\FormInterface')->getMock();
+        $config = $this->getMockBuilder('Symfony\Component\Form\FormConfigInterface')->getMock();
+        $form = new Form($config);
 
         $formFactory = $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock();
         $formFactory->expects($this->once())->method('create')->willReturn($form);
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/ProfilerListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/ProfilerListenerTest.php
index 526b3aa75dcf..392aa2fc3581 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/ProfilerListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/ProfilerListenerTest.php
@@ -19,6 +19,7 @@
 use Symfony\Component\HttpKernel\EventListener\ProfilerListener;
 use Symfony\Component\HttpKernel\Exception\HttpException;
 use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Component\HttpKernel\Profiler\Profile;
 
 class ProfilerListenerTest extends TestCase
 {
@@ -27,9 +28,7 @@ class ProfilerListenerTest extends TestCase
      */
     public function testKernelTerminate()
     {
-        $profile = $this->getMockBuilder('Symfony\Component\HttpKernel\Profiler\Profile')
-            ->disableOriginalConstructor()
-            ->getMock();
+        $profile = new Profile('token');
 
         $profiler = $this->getMockBuilder('Symfony\Component\HttpKernel\Profiler\Profiler')
             ->disableOriginalConstructor()

From c3b670a908ad474ffa81ba9a1ab97651923d7825 Mon Sep 17 00:00:00 2001
From: Thomas Calvet <calvet.thomas@gmail.com>
Date: Thu, 17 Jan 2019 18:25:46 +0100
Subject: [PATCH 048/103] [Debug][DebugClassLoader] Match more cases for final,
 deprecated and internal classes / methods extends

---
 .../Component/Debug/DebugClassLoader.php      |  6 +-
 .../Debug/Tests/DebugClassLoaderTest.php      | 38 +++++----
 .../Debug/Tests/Fixtures/FinalClass.php       | 10 ---
 .../Debug/Tests/Fixtures/FinalClasses.php     | 84 +++++++++++++++++++
 4 files changed, 110 insertions(+), 28 deletions(-)
 delete mode 100644 src/Symfony/Component/Debug/Tests/Fixtures/FinalClass.php
 create mode 100644 src/Symfony/Component/Debug/Tests/Fixtures/FinalClasses.php

diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index 86b7fb6a0430..54df7de0cfc9 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -233,8 +233,8 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
         // Detect annotations on the class
         if (false !== $doc = $refl->getDocComment()) {
             foreach (['final', 'deprecated', 'internal'] as $annotation) {
-                if (false !== \strpos($doc, $annotation) && preg_match('#\n \* @'.$annotation.'(?:( .+?)\.?)?\r?\n \*(?: @|/$)#s', $doc, $notice)) {
-                    self::${$annotation}[$class] = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
+                if (false !== \strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$)#s', $doc, $notice)) {
+                    self::${$annotation}[$class] = isset($notice[1]) ? preg_replace('#\.?\r?\n( \*)? *(?= |\r?\n|$)#', '', $notice[1]) : '';
                 }
             }
         }
@@ -308,7 +308,7 @@ public function checkAnnotations(\ReflectionClass $refl, $class)
 
             foreach (['final', 'internal'] as $annotation) {
                 if (false !== \strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$)#s', $doc, $notice)) {
-                    $message = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
+                    $message = isset($notice[1]) ? preg_replace('#\.?\r?\n( \*)? *(?= |\r?\n|$)#', '', $notice[1]) : '';
                     self::${$annotation.'Methods'}[$class][$method->name] = [$class, $message];
                 }
             }
diff --git a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
index b1c3c2b581d5..73fee9ac1572 100644
--- a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
+++ b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
@@ -290,24 +290,31 @@ class_exists('Test\\'.__NAMESPACE__.'\\Float', true);
 
     public function testExtendedFinalClass()
     {
-        set_error_handler(function () { return false; });
-        $e = error_reporting(0);
-        trigger_error('', E_USER_NOTICE);
+        $deprecations = [];
+        set_error_handler(function ($type, $msg) use (&$deprecations) { $deprecations[] = $msg; });
+        $e = error_reporting(E_USER_DEPRECATED);
 
-        class_exists('Test\\'.__NAMESPACE__.'\\ExtendsFinalClass', true);
+        require __DIR__.'/Fixtures/FinalClasses.php';
+
+        $i = 1;
+        while(class_exists($finalClass = __NAMESPACE__.'\\Fixtures\\FinalClass'.$i++, false)) {
+            spl_autoload_call($finalClass);
+            class_exists('Test\\'.__NAMESPACE__.'\\Extends'.substr($finalClass, strrpos($finalClass, '\\') + 1), true);
+        }
 
         error_reporting($e);
         restore_error_handler();
 
-        $lastError = error_get_last();
-        unset($lastError['file'], $lastError['line']);
-
-        $xError = [
-            'type' => E_USER_DEPRECATED,
-            'message' => 'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass" class is considered final since version 3.3. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass".',
-        ];
-
-        $this->assertSame($xError, $lastError);
+        $this->assertSame([
+            'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass1" class is considered final since version 3.3. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass1".',
+            'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass2" class is considered final. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass2".',
+            'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass3" class is considered final comment with @@@ and ***. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass3".',
+            'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass4" class is considered final. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass4".',
+            'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass5" class is considered final multiline comment. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass5".',
+            'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass6" class is considered final. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass6".',
+            'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass7" class is considered final another multiline comment... It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass7".',
+            'The "Symfony\Component\Debug\Tests\Fixtures\FinalClass8" class is considered final. It may change without further notice as of its next major version. You should not extend it from "Test\Symfony\Component\Debug\Tests\ExtendsFinalClass8".',
+        ], $deprecations);
     }
 
     public function testExtendedFinalMethod()
@@ -417,8 +424,9 @@ public function findFile($class)
             eval('namespace Test\\'.__NAMESPACE__.'; class NonDeprecatedInterfaceClass implements \\'.__NAMESPACE__.'\Fixtures\NonDeprecatedInterface {}');
         } elseif ('Test\\'.__NAMESPACE__.'\Float' === $class) {
             eval('namespace Test\\'.__NAMESPACE__.'; class Float {}');
-        } elseif ('Test\\'.__NAMESPACE__.'\ExtendsFinalClass' === $class) {
-            eval('namespace Test\\'.__NAMESPACE__.'; class ExtendsFinalClass extends \\'.__NAMESPACE__.'\Fixtures\FinalClass {}');
+        } elseif (0 === strpos($class, 'Test\\'.__NAMESPACE__.'\ExtendsFinalClass')) {
+            $classShortName = substr($class, strrpos($class, '\\') + 1);
+            eval('namespace Test\\'.__NAMESPACE__.'; class '.$classShortName.' extends \\'.__NAMESPACE__.'\Fixtures\\'.substr($classShortName, 7).' {}');
         } elseif ('Test\\'.__NAMESPACE__.'\ExtendsAnnotatedClass' === $class) {
             eval('namespace Test\\'.__NAMESPACE__.'; class ExtendsAnnotatedClass extends \\'.__NAMESPACE__.'\Fixtures\AnnotatedClass {
                 public function deprecatedMethod() { }
diff --git a/src/Symfony/Component/Debug/Tests/Fixtures/FinalClass.php b/src/Symfony/Component/Debug/Tests/Fixtures/FinalClass.php
deleted file mode 100644
index 2cf26b19e4fc..000000000000
--- a/src/Symfony/Component/Debug/Tests/Fixtures/FinalClass.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-namespace Symfony\Component\Debug\Tests\Fixtures;
-
-/**
- * @final since version 3.3.
- */
-class FinalClass
-
10000
{
-}
diff --git a/src/Symfony/Component/Debug/Tests/Fixtures/FinalClasses.php b/src/Symfony/Component/Debug/Tests/Fixtures/FinalClasses.php
new file mode 100644
index 000000000000..0f51f9f46f62
--- /dev/null
+++ b/src/Symfony/Component/Debug/Tests/Fixtures/FinalClasses.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+/**
+ * @final since version 3.3.
+ */
+class FinalClass1
+{
+    // simple comment
+}
+
+/**
+ * @final
+ */
+class FinalClass2
+{
+    // no comment
+}
+
+/**
+ * @final comment with @@@ and ***
+ *
+ * @author John Doe
+ */
+class FinalClass3
+{
+    // with comment and a tag after
+}
+
+/**
+ * @final
+ * @author John Doe
+ */
+class FinalClass4
+{
+    // without comment and a tag after
+}
+
+/**
+ * @author John Doe
+ *
+ *
+ * @final multiline
+ * comment
+ */
+class FinalClass5
+{
+    // with comment and a tag before
+}
+
+/**
+ * @author John Doe
+ *
+ * @final
+ */
+class FinalClass6
+{
+    // without comment and a tag before
+}
+
+/**
+ * @author John Doe
+ *
+ * @final another
+ *
+ *        multiline comment...
+ *
+ * @return string
+ */
+class FinalClass7
+{
+    // with comment and a tag before and after
+}
+
+/**
+ * @author John Doe
+ * @final
+ * @return string
+ */
+class FinalClass8
+{
+    // without comment and a tag before and after
+}

From 2791edf1fb8fcdcc6546a7d32b59a20815b0a928 Mon Sep 17 00:00:00 2001
From: Mathieu Lechat <mathieu.lechat@sendinblue.com>
Date: Wed, 26 Dec 2018 17:27:02 +0100
Subject: [PATCH 049/103] [Form] Changed UrlType input type to text when
 default_protocol is not null

---
 .../AbstractBootstrap3LayoutTest.php          | 20 +++++++++++++++++--
 src/Symfony/Bridge/Twig/composer.json         |  2 +-
 .../Bundle/FrameworkBundle/composer.json      |  2 +-
 .../Form/Extension/Core/Type/UrlType.php      | 13 ++++++++++++
 .../Form/Tests/AbstractLayoutTest.php         | 19 ++++++++++++++++--
 5 files changed, 50 insertions(+), 6 deletions(-)

diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
index ae62a40f604f..ebfb105826b3 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/AbstractBootstrap3LayoutTest.php
@@ -2385,13 +2385,29 @@ public function testTimezoneWithPlaceholder()
         );
     }
 
-    public function testUrl()
+    public function testUrlWithDefaultProtocol()
     {
         $url = 'http://www.google.com?foo1=bar1&foo2=bar2';
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\UrlType', $url);
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\UrlType', $url, ['default_protocol' => 'http']);
 
         $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
 '/input
+    [@type="text"]
+    [@name="name"]
+    [@class="my&class form-control"]
+    [@value="http://www.google.com?foo1=bar1&foo2=bar2"]
+    [@inputmode="url"]
+'
+        );
+    }
+
+    public function testUrlWithoutDefaultProtocol()
+    {
+        $url = 'http://www.google.com?foo1=bar1&foo2=bar2';
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\UrlType', $url, ['default_protocol' => null]);
+
+        $this->assertWidgetMatchesXpath($form->createView(), ['attr' => ['class' => 'my&class']],
+            '/input
     [@type="url"]
     [@name="name"]
     [@class="my&class form-control"]
diff --git a/src/Symfony/Bridge/Twig/composer.json b/src/Symfony/Bridge/Twig/composer.json
index 7d646c001043..58e90971bec1 100644
--- a/src/Symfony/Bridge/Twig/composer.json
+++ b/src/Symfony/Bridge/Twig/composer.json
@@ -23,7 +23,7 @@
         "symfony/asset": "~2.8|~3.0|~4.0",
         "symfony/dependency-injection": "~2.8|~3.0|~4.0",
         "symfony/finder": "~2.8|~3.0|~4.0",
-        "symfony/form": "^3.4.16|^4.1.5",
+        "symfony/form": "^3.4.22|~4.1.11|^4.2.3",
         "symfony/http-foundation": "^3.3.11|~4.0",
         "symfony/http-kernel": "~3.2|~4.0",
         "symfony/polyfill-intl-icu": "~1.0",
diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
index c1aad683ad69..c8ed98787e15 100644
--- a/src/Symfony/Bundle/FrameworkBundle/composer.json
+++ b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -39,7 +39,7 @@
         "symfony/css-selector": "~2.8|~3.0|~4.0",
         "symfony/dom-crawler": "~2.8|~3.0|~4.0",
         "symfony/polyfill-intl-icu": "~1.0",
-        "symfony/form": "~3.4|~4.0",
+        "symfony/form": "^3.4.22|~4.1.11|^4.2.3",
         "symfony/expression-language": "~2.8|~3.0|~4.0",
         "symfony/process": "~2.8|~3.0|~4.0",
         "symfony/security-core": "~3.2|~4.0",
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/UrlType.php b/src/Symfony/Component/Form/Extension/Core/Type/UrlType.php
index 17460688b7fd..39b9d2d20828 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/UrlType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/UrlType.php
@@ -14,6 +14,8 @@
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\Extension\Core\EventListener\FixUrlProtocolListener;
 use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\Form\FormInterface;
+use Symfony\Component\Form\FormView;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 
 class UrlType extends AbstractType
@@ -28,6 +30,17 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         }
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function buildView(FormView $view, FormInterface $form, array $options)
+    {
+        if ($options['default_protocol']) {
+            $view->vars['attr']['inputmode'] = 'url';
+            $view->vars['type'] = 'text';
+        }
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php b/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
index bb7fc197abfc..0e749b780c78 100644
--- a/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractLayoutTest.php
@@ -2170,10 +2170,25 @@ public function testTimezoneWithPlaceholder()
         );
     }
 
-    public function testUrl()
+    public function testUrlWithDefaultProtocol()
     {
         $url = 'http://www.google.com?foo1=bar1&foo2=bar2';
-        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\UrlType', $url);
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\UrlType', $url, ['default_protocol' => 'http']);
+
+        $this->assertWidgetMatchesXpath($form->createView(), [],
+'/input
+    [@type="text"]
+    [@name="name"]
+    [@value="http://www.google.com?foo1=bar1&foo2=bar2"]
+    [@inputmode="url"]
+'
+        );
+    }
+
+    public function testUrlWithoutDefaultProtocol()
+    {
+        $url = 'http://www.google.com?foo1=bar1&foo2=bar2';
+        $form = $this->factory->createNamed('name', 'Symfony\Component\Form\Extension\Core\Type\UrlType', $url, ['default_protocol' => null]);
 
         $this->assertWidgetMatchesXpath($form->createView(), [],
 '/input

From 52c80e6cf2c780ac5a9ad46d915368c4303110d8 Mon Sep 17 00:00:00 2001
From: "Alexander M. Turek" <me@derrabus.de>
Date: Fri, 18 Jan 2019 00:19:08 +0100
Subject: [PATCH 050/103] Avoid dots in generated class names.

---
 src/Symfony/Component/HttpKernel/Kernel.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index f2528aab26dd..981aa0f39c2e 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -447,7 +447,7 @@ protected function build(ContainerBuilder $container)
     protected function getContainerClass()
     {
         $class = \get_class($this);
-        $class = 'c' === $class[0] && 0 === strpos($class, "class@anonymous\0") ? get_parent_class($class).ContainerBuilder::hash($class) : $class;
+        $class = 'c' === $class[0] && 0 === strpos($class, "class@anonymous\0") ? get_parent_class($class).str_replace('.', '_', ContainerBuilder::hash($class)) : $class;
 
         return $this->name.str_replace('\\', '_', $class).ucfirst($this->environment).($this->debug ? 'Debug' : '').'Container';
     }

From c5c2d31fefb1796af91ab0e83da29098720acf57 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Fri, 18 Jan 2019 12:20:22 +0100
Subject: [PATCH 051/103] forward the parse error to the calling code

---
 .../Component/DependencyInjection/Loader/XmlFileLoader.php      | 2 +-
 .../Component/DependencyInjection/Loader/YamlFileLoader.php     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
index 1921c71570c3..a02a6c8ea5c6 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
@@ -383,7 +383,7 @@ private function parseFileToDOM($file)
         try {
             $dom = XmlUtils::loadFile($file, [$this, 'validateSchema']);
         } catch (\InvalidArgumentException $e) {
-            throw new InvalidArgumentException(sprintf('Unable to parse file "%s".', $file), $e->getCode(), $e);
+            throw new InvalidArgumentException(sprintf('Unable to parse file "%s": %s', $file, $e->getMessage()), $e->getCode(), $e);
         }
 
         $this->validateExtensions($dom, $file);
diff --git a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
index dccbae9b7393..5dc41e034789 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
@@ -666,7 +666,7 @@ protected function loadFile($file)
         try {
             $configuration = $this->yamlParser->parseFile($file, Yaml::PARSE_CONSTANT | Yaml::PARSE_CUSTOM_TAGS);
         } catch (ParseException $e) {
-            throw new InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML.', $file), 0, $e);
+            throw new InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML: %s', $file, $e->getMessage()), 0, $e);
         } finally {
             restore_error_handler();
         }

From 4db0a6e09911bd2be3691549ad97ee04081fd520 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Sun, 20 Jan 2019 09:34:00 +0100
Subject: [PATCH 052/103] fix tests

---
 .../Tests/Loader/XmlFileLoaderTest.php                 | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
index c265c00e811e..d89887acca9e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
@@ -67,7 +67,7 @@ public function testParseFile()
             $this->fail('->parseFileToDOM() throws an InvalidArgumentException if the loaded file is not a valid XML file');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Exception\\InvalidArgumentException', $e, '->parseFileToDOM() throws an InvalidArgumentException if the loaded file is not a valid XML file');
-            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s".$#', 'parameters.ini'), $e->getMessage(), '->parseFileToDOM() throws an InvalidArgumentException if the loaded file is not a valid XML file');
+            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s": .+.$#', 'parameters.ini'), $e->getMessage(), '->parseFileToDOM() throws an InvalidArgumentException if the loaded file is not a valid XML file');
 
             $e = $e->getPrevious();
             $this->assertInstanceOf('InvalidArgumentException', $e, '->parseFileToDOM() throws an InvalidArgumentException if the loaded file is not a valid XML file');
@@ -81,7 +81,7 @@ public function testParseFile()
             $this->fail('->parseFileToDOM() throws an InvalidArgumentException if the loaded file does not validate the XSD');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Exception\\InvalidArgumentException', $e, '->parseFileToDOM() throws an InvalidArgumentException if the loaded file does not validate the XSD');
-            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s".$#', 'nonvalid.xml'), $e->getMessage(), '->parseFileToDOM() throws an InvalidArgumentException if the loaded file is not a valid XML file');
+            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s": .+.$#', 'nonvalid.xml'), $e->getMessage(), '->parseFileToDOM() throws an InvalidArgumentException if the loaded file is not a valid XML file');
 
             $e = $e->getPrevious();
             $this->assertInstanceOf('InvalidArgumentException', $e, '->parseFileToDOM() throws an InvalidArgumentException if the loaded file does not validate the XSD');
@@ -437,7 +437,7 @@ public function testExtensions()
             $this->fail('->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Exception\\InvalidArgumentException', $e, '->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
-            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s".$#', 'services3.xml'), $e->getMessage(), '->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
+            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s": .+.$#', 'services3.xml'), $e->getMessage(), '->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
 
             $e = $e->getPrevious();
             $this->assertInstanceOf('InvalidArgumentException', $e, '->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
@@ -477,7 +477,7 @@ public function testExtensionInPhar()
             $this->fail('->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Exception\\InvalidArgumentException', $e, '->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
-            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s".$#', 'services7.xml'), $e->getMessage(), '->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
+            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s": .+.$#', 'services7.xml'), $e->getMessage(), '->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
 
             $e = $e->getPrevious();
             $this->assertInstanceOf('InvalidArgumentException', $e, '->load() throws an InvalidArgumentException if the configuration does not validate the XSD');
@@ -528,7 +528,7 @@ public function testDocTypeIsNotAllowed()
             $this->fail('->load() throws an InvalidArgumentException if the configuration contains a document type');
         } catch (\Exception $e) {
             $this->assertInstanceOf('Symfony\\Component\\DependencyInjection\\Exception\\InvalidArgumentException', $e, '->load() throws an InvalidArgumentException if the configuration contains a document type');
-            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s".$#', 'withdoctype.xml'), $e->getMessage(), '->load() throws an InvalidArgumentException if the configuration contains a document type');
+            $this->assertRegExp(sprintf('#^Unable to parse file ".+%s": .+.$#', 'withdoctype.xml'), $e->getMessage(), '->load() throws an InvalidArgumentException if the configuration contains a document type');
 
             $e = $e->getPrevious();
             $this->assertInstanceOf('InvalidArgumentException', $e, '->load() throws an InvalidArgumentException if the configuration contains a document type');

From 6e279a006bca8e252ce8f15c918981d0dd61d1d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20K=C3=A4fer?= <michael.kaefer1@gmx.at>
Date: Sun, 13 Jan 2019 13:05:14 +0100
Subject: [PATCH 053/103] Grammar fix in exception message

According to https://en.wiktionary.org/wiki/whitespace and https://english.stackexchange.com/questions/25368/what-is-the-plural-form-of-whitespace valid sentences would be:
- Whitespace is ...
- Whitespaces are ...
- Whitespace characters are ...

But this is not correct:
- Whitespace are ...
---
 src/Symfony/Component/Dotenv/Dotenv.php           | 2 +-
 src/Symfony/Component/Dotenv/Tests/DotenvTest.php | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Dotenv/Dotenv.php b/src/Symfony/Component/Dotenv/Dotenv.php
index 7b17513ab147..d21e0435062b 100644
--- a/src/Symfony/Component/Dotenv/Dotenv.php
+++ b/src/Symfony/Component/Dotenv/Dotenv.php
@@ -161,7 +161,7 @@ private function lexVarname()
         }
 
         if (' ' === $this->data[$this->cursor] || "\t" === $this->data[$this->cursor]) {
-            throw $this->createFormatException('Whitespace are not supported after the variable name');
+            throw $this->createFormatException('Whitespace characters are not supported after the variable name');
         }
 
         if ('=' !== $this->data[$this->cursor]) {
diff --git a/src/Symfony/Component/Dotenv/Tests/DotenvTest.php b/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
index fabe643a014b..7137d83b36f3 100644
--- a/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
+++ b/src/Symfony/Component/Dotenv/Tests/DotenvTest.php
@@ -36,7 +36,7 @@ public function getEnvDataWithFormatErrors()
     {
         $tests = [
             ['FOO=BAR BAZ', "A value containing spaces must be surrounded by quotes in \".env\" at line 1.\n...FOO=BAR BAZ...\n             ^ line 1 offset 11"],
-            ['FOO BAR=BAR', "Whitespace are not supported after the variable name in \".env\" at line 1.\n...FOO BAR=BAR...\n     ^ line 1 offset 3"],
+            ['FOO BAR=BAR', "Whitespace characters are not supported after the variable name in \".env\" at line 1.\n...FOO BAR=BAR...\n     ^ line 1 offset 3"],
             ['FOO', "Missing = in the environment variable declaration in \".env\" at line 1.\n...FOO...\n     ^ line 1 offset 3"],
             ['FOO="foo', "Missing quote to end the value in \".env\" at line 1.\n...FOO=\"foo...\n          ^ line 1 offset 8"],
             ['FOO=\'foo', "Missing quote to end the value in \".env\" at line 1.\n...FOO='foo...\n          ^ line 1 offset 8"],

From 419d3db86c86475c4d5a231b5208850422cae648 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Tue, 22 Jan 2019 15:03:06 +0100
Subject: [PATCH 054/103] synchronise the form builder docblock

---
 .../MergeDoctrineCollectionListenerTest.php          | 10 +++++-----
 src/Symfony/Component/Form/FormBuilder.php           |  2 +-
 src/Symfony/Component/Form/ResolvedFormType.php      |  2 +-
 src/Symfony/Component/Form/Test/TypeTestCase.php     |  2 +-
 .../Component/Form/Tests/AbstractFormTest.php        |  2 +-
 src/Symfony/Component/Form/Tests/ButtonTest.php      |  8 ++++----
 .../EventListener/CsrfValidationListenerTest.php     | 11 +++--------
 .../Component/Form/Tests/ResolvedFormTypeTest.php    | 12 ------------
 8 files changed, 16 insertions(+), 33 deletions(-)

diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
index 5bca28571165..c70bc3d0372a 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/EventListener/MergeDoctrineCollectionListenerTest.php
@@ -45,14 +45,14 @@ protected function tearDown()
         $this->form = null;
     }
 
-    protected function getBuilder($name = 'name')
+    protected function getBuilder()
     {
-        return new FormBuilder($name, null, $this->dispatcher, $this->factory);
+        return new FormBuilder('name', null, $this->dispatcher, $this->factory);
     }
 
-    protected function getForm($name = 'name')
+    protected function getForm()
     {
-        return $this->getBuilder($name)
+        return $this->getBuilder()
             ->setData($this->collection)
             ->addEventSubscriber(new MergeDoctrineCollectionListener())
             ->getForm();
@@ -84,7 +84,7 @@ public function testOnSubmitNullClearCollection()
      */
     public function testLegacyChildClassOnSubmitCallParent()
     {
-        $form = $this->getBuilder('name')
+        $form = $this->getBuilder()
             ->setData($this->collection)
             ->addEventSubscriber(new TestClassExtendingMergeDoctrineCollectionListener())
             ->getForm();
diff --git a/src/Symfony/Component/Form/FormBuilder.php b/src/Symfony/Component/Form/FormBuilder.php
index f36b5fa1a83d..00affbf6d8c3 100644
--- a/src/Symfony/Component/Form/FormBuilder.php
+++ b/src/Symfony/Component/Form/FormBuilder.php
@@ -41,7 +41,7 @@ class FormBuilder extends FormConfigBuilder implements \IteratorAggregate, FormB
      * Creates a new form builder.
      *
      * @param string                   $name
-     * @param string                   $dataClass
+     * @param string|null              $dataClass
      * @param EventDispatcherInterface $dispatcher
      * @param FormFactoryInterface     $factory
      * @param array                    $options
diff --git a/src/Symfony/Component/Form/ResolvedFormType.php b/src/Symfony/Component/Form/ResolvedFormType.php
index e4ca7bbd94dd..0efde40849f0 100644
--- a/src/Symfony/Component/Form/ResolvedFormType.php
+++ b/src/Symfony/Component/Form/ResolvedFormType.php
@@ -205,7 +205,7 @@ public function getOptionsResolver()
      * Override this method if you want to customize the builder class.
      *
      * @param string               $name      The name of the builder
-     * @param string               $dataClass The data class
+     * @param string|null          $dataClass The data class
      * @param FormFactoryInterface $factory   The current form factory
      * @param array                $options   The builder options
      *
diff --git a/src/Symfony/Component/Form/Test/TypeTestCase.php b/src/Symfony/Component/Form/Test/TypeTestCase.php
index 41e0333b0954..7c9aa96a9eae 100644
--- a/src/Symfony/Component/Form/Test/TypeTestCase.php
+++ b/src/Symfony/Component/Form/Test/TypeTestCase.php
@@ -32,7 +32,7 @@ protected function setUp()
         parent::setUp();
 
         $this->dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
-        $this->builder = new FormBuilder(null, null, $this->dispatcher, $this->factory);
+        $this->builder = new FormBuilder('', null, $this->dispatcher, $this->factory);
     }
 
     protected function tearDown()
diff --git a/src/Symfony/Component/Form/Tests/AbstractFormTest.php b/src/Symfony/Component/Form/Tests/AbstractFormTest.php
index 0ea55f9208b1..235aa3fa98d0 100644
--- a/src/Symfony/Component/Form/Tests/AbstractFormTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractFormTest.php
@@ -55,7 +55,7 @@ abstract protected function createForm();
     /**
      * @param string                   $name
      * @param EventDispatcherInterface $dispatcher
-     * @param string                   $dataClass
+     * @param string|null              $dataClass
      * @param array                    $options
      *
      * @return FormBuilder
diff --git a/src/Symfony/Component/Form/Tests/ButtonTest.php b/src/Symfony/Component/Form/Tests/ButtonTest.php
index 6115640242bc..8c1ccec75c2b 100644
--- a/src/Symfony/Component/Form/Tests/ButtonTest.php
+++ b/src/Symfony/Component/Form/Tests/ButtonTest.php
@@ -41,7 +41,7 @@ public function testSetParentOnSubmittedButton()
 
         $button->submit('');
 
-        $button->setParent($this->getFormBuilder('form')->getForm());
+        $button->setParent($this->getFormBuilder()->getForm());
     }
 
     /**
@@ -49,7 +49,7 @@ public function testSetParentOnSubmittedButton()
      */
     public function testDisabledIfParentIsDisabled($parentDisabled, $buttonDisabled, $result)
     {
-        $form = $this->getFormBuilder('form')
+        $form = $this->getFormBuilder()
             ->setDisabled($parentDisabled)
             ->getForm()
         ;
@@ -80,8 +80,8 @@ private function getButtonBuilder($name)
         return new ButtonBuilder($name);
     }
 
-    private function getFormBuilder($name)
+    private function getFormBuilder()
     {
-        return new FormBuilder($name, null, $this->dispatcher, $this->factory);
+        return new FormBuilder('form', null, $this->dispatcher, $this->factory);
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
index 33783d6a043a..5bad58888406 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
@@ -28,7 +28,7 @@ protected function setUp()
         $this->dispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
         $this->factory = $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock();
         $this->tokenManager = $this->getMockBuilder('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')->getMock();
-        $this->form = $this->getBuilder('post')
+        $this->form = $this->getBuilder()
             ->setDataMapper($this->getDataMapper())
             ->getForm();
     }
@@ -41,14 +41,9 @@ protected function tearDown()
         $this->form = null;
     }
 
-    protected function getBuilder($name = 'name')
+    protected function getBuilder()
     {
-        return new FormBuilder($name, null, $this->dispatcher, $this->factory, ['compound' => true]);
-    }
-
-    protected function getForm($name = 'name')
-    {
-        return $this->getBuilder($name)->getForm();
+        return new FormBuilder('post', null, $this->dispatcher, $this->factory, ['compound' => true]);
     }
 
     protected function getDataMapper()
diff --git a/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php b/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
index ff3e2cb87de8..cdbb79ae3e0f 100644
--- a/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
@@ -12,7 +12,6 @@
 namespace Symfony\Component\Form\Tests;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\Form\FormBuilder;
 use Symfony\Component\Form\FormTypeExtensionInterface;
 use Symfony\Component\Form\FormTypeInterface;
 use Symfony\Component\Form\ResolvedFormType;
@@ -380,15 +379,4 @@ private function getMockFormFactory()
     {
         return $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock();
     }
-
-    /**
-     * @param string $name
-     * @param array  $options
-     *
-     * @return FormBuilder
-     */
-    protected function getBuilder($name = 'name', array $options = [])
-    {
-        return new FormBuilder($name, null, $this->dispatcher, $this->factory, $options);
-    }
 }

From 1da00db24753792304b7e7510f8dce900e95b80d Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Tue, 22 Jan 2019 15:51:10 +0100
Subject: [PATCH 055/103] use final annotation to allow mocking the class

---
 src/Symfony/Component/Security/Core/Security.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Security/Core/Security.php b/src/Symfony/Component/Security/Core/Security.php
index 5d6bf51af161..9d771b581858 100644
--- a/src/Symfony/Component/Security/Core/Security.php
+++ b/src/Symfony/Component/Security/Core/Security.php
@@ -17,8 +17,10 @@
 
 /**
  * Helper class for commonly-needed security tasks.
+ *
+ * @final
  */
-final class Security
+class Security
 {
     const ACCESS_DENIED_ERROR = '_security.403_error';
     const AUTHENTICATION_ERROR = '_security.last_error';

From 15f5f69b1d2d42be63a4a66549f6b7d041b7b145 Mon Sep 17 00:00:00 2001
From: Stadly <magnar@myrtveit.com>
Date: Wed, 23 Jan 2019 09:53:40 +0100
Subject: [PATCH 056/103] Fix heredoc

---
 .../Translation/Tests/fixtures/extractor/translation.html.php   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php b/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
index 11261311a1be..bf794c45ad7d 100644
--- a/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
+++ b/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
@@ -1,7 +1,7 @@
 This template is used for translation message extraction tests
 <?php echo $view['translator']->trans('single-quoted key'); ?>
 <?php echo $view['translator']->trans('double-quoted key'); ?>
-<?php echo $view['translator']->trans(<<<'EOF'
+<?php echo $view['translator']->trans(<<<EOF
 heredoc key
 EOF
 ); ?>

From 69feb49c0d920b393e6d096966452446d74d0603 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Vasseur?= <jerome.vasseur@jhome.fr>
Date: Wed, 23 Jan 2019 13:42:58 +0100
Subject: [PATCH 057/103] Fix HttpKernel Debug requirement

---
 src/Symfony/Component/HttpKernel/composer.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpKernel/composer.json b/src/Symfony/Component/HttpKernel/composer.json
index 9ad3877ba1a5..f47f1162d1cd 100644
--- a/src/Symfony/Component/HttpKernel/composer.json
+++ b/src/Symfony/Component/HttpKernel/composer.json
@@ -19,7 +19,7 @@
         "php": "^5.5.9|>=7.0.8",
         "symfony/event-dispatcher": "~2.8|~3.0|~4.0",
         "symfony/http-foundation": "~3.4.12|~4.0.12|^4.1.1",
-        "symfony/debug": "~2.8|~3.0|~4.0",
+        "symfony/debug": "^3.3.3|~4.0",
         "symfony/polyfill-ctype": "~1.8",
         "psr/log": "~1.0"
     },

From b979fff6b8c3f2bff4faa46798e1c1dd5270b229 Mon Sep 17 00:00:00 2001
From: Thomas Calvet <calvet.thomas@gmail.com>
Date: Sun, 13 Jan 2019 13:45:12 +0100
Subject: [PATCH 058/103] [Debug][ErrorHandler] Preserve our error handler when
 a logger set another one

---
 src/Symfony/Component/Debug/ErrorHandler.php  |  4 ++
 .../Debug/Tests/ErrorHandlerTest.php          | 44 +++++++++++++++++++
 .../Fixtures/LoggerThatSetAnErrorHandler.php  | 14 ++++++
 3 files changed, 62 insertions(+)
 create mode 100644 src/Symfony/Component/Debug/Tests/Fixtures/LoggerThatSetAnErrorHandler.php

diff --git a/src/Symfony/Component/Debug/ErrorHandler.php b/src/Symfony/Component/Debug/ErrorHandler.php
index 64857ed44722..22a6426dab7e 100644
--- a/src/Symfony/Component/Debug/ErrorHandler.php
+++ b/src/Symfony/Component/Debug/ErrorHandler.php
@@ -523,6 +523,10 @@ public function handleError($type, $message, $file, $line)
                 $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? ['exception' => $errorAsException] : []);
             } finally {
                 $this->isRecursive = false;
+
+                if (!\defined('HHVM_VERSION')) {
+                    set_error_handler([$this, __FUNCTION__]);
+                }
             }
         }
 
diff --git a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
index 98d9f6143da0..6e0afd55cacf 100644
--- a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
+++ b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
@@ -12,10 +12,13 @@
 namespace Symfony\Component\Debug\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Psr\Log\LoggerInterface;
 use Psr\Log\LogLevel;
+use Psr\Log\NullLogger;
 use Symfony\Component\Debug\BufferingLogger;
 use Symfony\Component\Debug\ErrorHandler;
 use Symfony\Component\Debug\Exception\SilencedErrorContext;
+use Symfony\Component\Debug\Tests\Fixtures\LoggerThatSetAnErrorHandler;
 
 /**
  * ErrorHandlerTest.
@@ -321,6 +324,8 @@ public function testHandleDeprecation()
         $handler = new ErrorHandler();
         $handler->setDefaultLogger($logger);
         @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, []);
+
+        restore_error_handler();
     }
 
     /**
@@ -583,4 +588,43 @@ public function testCustomExceptionHandler()
 
         $handler->handleException(new \Exception());
     }
+
+    /**
+     * @dataProvider errorHandlerIsNotLostWhenLoggingProvider
+     */
+    public function testErrorHandlerIsNotLostWhenLogging($customErrorHandlerHasBeenPreviouslyDefined, LoggerInterface $logger)
+    {
+        try {
+            if ($customErrorHandlerHasBeenPreviouslyDefined) {
+                set_error_handler('count');
+            }
+
+            $handler = ErrorHandler::register();
+            $handler->setDefaultLogger($logger);
+
+            @trigger_error('foo', E_USER_DEPRECATED);
+            @trigger_error('bar', E_USER_DEPRECATED);
+
+            $this->assertSame([$handler, 'handleError'], set_error_handler('var_dump'));
+
+            restore_error_handler();
+
+            if ($customErrorHandlerHasBeenPreviouslyDefined) {
+                restore_error_handler();
+            }
+        } finally {
+            restore_error_handler();
+            restore_exception_handler();
+        }
+    }
+
+    public function errorHandlerIsNotLostWhenLoggingProvider()
+    {
+        return [
+            [false, new NullLogger()],
+            [true, new NullLogger()],
+            [false, new LoggerThatSetAnErrorHandler()],
+            [true, new LoggerThatSetAnErrorHandler()],
+        ];
+    }
 }
diff --git a/src/Symfony/Component/Debug/Tests/Fixtures/LoggerThatSetAnErrorHandler.php b/src/Symfony/Component/Debug/Tests/Fixtures/LoggerThatSetAnErrorHandler.php
new file mode 100644
index 000000000000..7545039cf85a
--- /dev/null
+++ b/src/Symfony/Component/Debug/Tests/Fixtures/LoggerThatSetAnErrorHandler.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+use Psr\Log\AbstractLogger;
+
+class LoggerThatSetAnErrorHandler extends AbstractLogger
+{
+    public function log($level, $message, array $context = [])
+    {
+        set_error_handler('is_string');
+        restore_error_handler();
+    }
+}

From aad0c58d6cc61dec91a9c868547429c5b46e57bb Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Thu, 24 Jan 2019 22:26:46 +0100
Subject: [PATCH 059/103] [appveyor] fix create-project phpunit

---
 src/Symfony/Bridge/PhpUnit/bin/simple-phpunit | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
index a8528d737518..ff6ce8066e9c 100755
--- a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
+++ b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
@@ -61,7 +61,9 @@ if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit") || md5_file(__
     @mkdir($PHPUNIT_DIR, 0777, true);
     chdir($PHPUNIT_DIR);
     if (file_exists("phpunit-$PHPUNIT_VERSION")) {
-        passthru(sprintf('\\' === DIRECTORY_SEPARATOR ? '(del /S /F /Q %s & rmdir %1$s) >nul': 'rm -rf %s', "phpunit-$PHPUNIT_VERSION"));
+        passthru(sprintf('\\' === DIRECTORY_SEPARATOR ? 'rmdir /S /Q %s > NUL': 'rm -rf %s', "phpunit-$PHPUNIT_VERSION.old"));
+        rename("phpunit-$PHPUNIT_VERSION", "phpunit-$PHPUNIT_VERSION.old");
+        passthru(sprintf('\\' === DIRECTORY_SEPARATOR ? 'rmdir /S /Q %s': 'rm -rf %s', "phpunit-$PHPUNIT_VERSION.old"));
     }
     passthru("$COMPOSER create-project --no-install --prefer-dist --no-scripts --no-plugins --no-progress --ansi phpunit/phpunit phpunit-$PHPUNIT_VERSION \"$PHPUNIT_VERSION.*\"");
     chdir("phpunit-$PHPUNIT_VERSION");

From ebed00f65cb7b6b856fdc51c45c613c883661bec Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Thu, 24 Jan 2019 22:33:33 +0100
Subject: [PATCH 060/103] Bump phpunit bridge cache id

---
 phpunit | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/phpunit b/phpunit
index 9975195309a8..ade55fab342c 100755
--- a/phpunit
+++ b/phpunit
@@ -1,7 +1,7 @@
 #!/usr/bin/env php
 <?php
 
-// Cache-Id: https://github.com/symfony/phpunit-bridge/commit/2155067dfc73e0e77dbc26f236af17e4df552de5
+// Cache-Id: https://github.com/symfony/symfony/commit/aad0c58
 
 if (!file_exists(__DIR__.'/vendor/symfony/phpunit-bridge/bin/simple-phpunit')) {
     echo "Unable to find the `simple-phpunit` script in `vendor/symfony/phpunit-bridge/bin/`.\nPlease run `composer update` before running this command.\n";

From 335036cf09b6679ee89bb98045bfc5098540df14 Mon Sep 17 00:00:00 2001
From: Tom Van Looy <tom@ctors.net>
Date: Thu, 20 Dec 2018 22:16:23 +0100
Subject: [PATCH 061/103] Enable PHP 7.3 on Travis

---
 .travis.yml                                   | 43 ++++++++++++++++---
 .../Storage/NativeSessionStorageTest.php      |  2 +
 2 files changed, 38 insertions(+), 7 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 03984af88795..5d1ac461e6da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ addons:
         - language-pack-fr-base
         - ldap-utils
         - slapd
+        - libsasl2-dev
 
 env:
     global:
@@ -23,10 +24,10 @@ matrix:
           sudo: required
           group: edge
         - php: 5.5
-          env: php_extra="5.6 7.0"
-        - php: 7.1
-          env: deps=high
+          env: php_extra="5.6 7.0 7.1"
         - php: 7.2
+          env: deps=high
+        - php: 7.3
           env: deps=low
     fast_finish: true
 
@@ -43,6 +44,12 @@ services:
     - docker
 
 before_install:
+    - |
+      # Enable Sury ppa
+      sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6B05F25D762E3157
+      sudo add-apt-repository -y ppa:ondrej/php
+      sudo apt update
+
     - |
       # Start Redis cluster
       docker pull grokzen/redis-cluster:4.0.8
@@ -149,7 +156,6 @@ before_install:
           echo hhvm.jit = 0 >> $INI
           echo apc.enable_cli = 1 >> $INI
           echo extension = redis.so >> $INI
-          echo extension = memcached.so >> $INI
           if [[ $PHP = 5.* ]]; then
               echo extension = memcache.so >> $INI
               echo extension = mongo.so >> $INI
@@ -174,15 +180,38 @@ before_install:
           elif [[ $PHP = 7.* ]]; then
               if ! php --ri sodium > /dev/null; then
                   # install libsodium
-                  sudo add-apt-repository ppa:ondrej/php -y
-                  sudo apt-get update -q
                   sudo apt-get install libsodium-dev -y
                   tfold ext.libsodium tpecl libsodium sodium.so $INI
               fi
 
-              tfold ext.apcu tpecl apcu-5.1.6 apcu.so $INI
+              tfold ext.apcu tpecl apcu-5.1.16 apcu.so $INI
               tfold ext.mongodb tpecl mongodb-1.6.0alpha1 mongodb.so $INI
           fi
+
+          if [[ $PHP == 7.3 ]]; then
+              # System libmemcached is missing sasl
+              LIBMEMCACHED_VERSION=1.0.18
+              wget "https://launchpad.net/libmemcached/1.0/${LIBMEMCACHED_VERSION}/+download/libmemcached-${LIBMEMCACHED_VERSION}.tar.gz" -O libmemcached-${LIBMEMCACHED_VERSION}.tar.gz
+              tar xvfz libmemcached-${LIBMEMCACHED_VERSION}.tar.gz
+              cd "libmemcached-${LIBMEMCACHED_VERSION}"
+              mkdir -p /opt/libmemcached/${LIBMEMCACHED_VERSION}
+              ./configure --prefix="/opt/libmemcached/${LIBMEMCACHED_VERSION}" LDFLAGS="-lpthread"
+              make
+              make install
+              cd -
+
+              EXTMEMCACHED_VERSION=3.1.3
+              wget https://pecl.php.net/get/memcached-${EXTMEMCACHED_VERSION}.tgz
+              tar xzvf memcached-${EXTMEMCACHED_VERSION}.tgz
+              cd memcached-${EXTMEMCACHED_VERSION}
+              phpize
+              ./configure --with-libmemcached-dir=/opt/libmemcached/${LIBMEMCACHED_VERSION}
+              make
+              sudo make install
+              cd -
+          fi
+
+          echo extension = memcached.so >> $INI
       done
 
     - |
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
index d4aa476a4c66..7cc2eb79c8db 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
@@ -179,6 +179,8 @@ public function testCookieOptions()
             $gco['cookie_'.$key] = $value;
         }
 
+        unset($gco['cookie_samesite']);
+
         $this->assertEquals($options, $gco);
     }
 

From 399fee64f84bc3d95ea5c4cbf219e05819520dc4 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Thu, 24 Jan 2019 23:05:03 +0100
Subject: [PATCH 062/103] [Process] disable transient test on Windows

---
 src/Symfony/Component/Process/Tests/ProcessTest.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
index 5e36e383641d..187226bd49de 100644
--- a/src/Symfony/Component/Process/Tests/ProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -135,6 +135,10 @@ public function testStopWithTimeoutIsActuallyWorking()
 
     public function testWaitUntilSpecificOutput()
     {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $this->markTestIncomplete('This test is too transient on Windows, help wanted to improve it');
+        }
+
         $p = $this->getProcess([self::$phpBin, __DIR__.'/KillableProcessWithOutput.php']);
         $p->start();
 

From 794526a7914b9d3afcc9fe4ae664af3ca1bb92bf Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Fri, 11 Jan 2019 11:31:44 +0100
Subject: [PATCH 063/103] [Cache] fix used variable name

---
 .../Component/Cache/Simple/Psr6Cache.php      |  2 +-
 .../Cache/Tests/Fixtures/ExternalAdapter.php  |  4 +--
 .../Cache/Tests/Simple/Psr6CacheTest.php      | 10 +++-----
 .../Tests/Simple/Psr6CacheWithAdapterTest.php | 25 +++++++++++++++++++
 .../Simple/Psr6CacheWithoutAdapterTest.php    | 25 +++++++++++++++++++
 5 files changed, 57 insertions(+), 9 deletions(-)
 create mode 100644 src/Symfony/Component/Cache/Tests/Simple/Psr6CacheWithAdapterTest.php
 create mode 100644 src/Symfony/Component/Cache/Tests/Simple/Psr6CacheWithoutAdapterTest.php

diff --git a/src/Symfony/Component/Cache/Simple/Psr6Cache.php b/src/Symfony/Component/Cache/Simple/Psr6Cache.php
index 29c039f2c169..fceb9ba70fd8 100644
--- a/src/Symfony/Component/Cache/Simple/Psr6Cache.php
+++ b/src/Symfony/Component/Cache/Simple/Psr6Cache.php
@@ -154,7 +154,7 @@ public function getMultiple($keys, $default = null)
                 $values[$key] = $item->isHit() ? $item->get() : $default;
             }
 
-            return $value;
+            return $values;
         }
 
         foreach ($items as $key => $item) {
diff --git a/src/Symfony/Component/Cache/Tests/Fixtures/ExternalAdapter.php b/src/Symfony/Component/Cache/Tests/Fixtures/ExternalAdapter.php
index 779a374ec7ab..deb0b3bc3402 100644
--- a/src/Symfony/Component/Cache/Tests/Fixtures/ExternalAdapter.php
+++ b/src/Symfony/Component/Cache/Tests/Fixtures/ExternalAdapter.php
@@ -24,9 +24,9 @@ class ExternalAdapter implements CacheItemPoolInterface
 {
     private $cache;
 
-    public function __construct()
+    public function __construct(int $defaultLifetime = 0)
     {
-        $this->cache = new ArrayAdapter();
+        $this->cache = new ArrayAdapter($defaultLifetime);
     }
 
     public function getItem($key)
diff --git a/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheTest.php
index 1bc75c906035..65d48a978c50 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheTest.php
@@ -11,13 +11,9 @@
 
 namespace Symfony\Component\Cache\Tests\Simple;
 
-use Symfony\Component\Cache\Adapter\FilesystemAdapter;
 use Symfony\Component\Cache\Simple\Psr6Cache;
 
-/**
- * @group time-sensitive
- */
-class Psr6CacheTest extends CacheTestCase
+abstract class Psr6CacheTest extends CacheTestCase
 {
     protected $skippedTests = [
         'testPrune' => 'Psr6Cache just proxies',
@@ -25,6 +21,8 @@ class Psr6CacheTest extends CacheTestCase
 
     public function createSimpleCache($defaultLifetime = 0)
     {
-        return new Psr6Cache(new FilesystemAdapter('', $defaultLifetime));
+        return new Psr6Cache($this->createCacheItemPool($defaultLifetime));
     }
+
+    abstract protected function createCacheItemPool($defaultLifetime = 0);
 }
diff --git a/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheWithAdapterTest.php b/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheWithAdapterTest.php
new file mode 100644
index 000000000000..46da9354d6db
--- /dev/null
+++ b/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheWithAdapterTest.php
@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Tests\Simple;
+
+use Symfony\Component\Cache\Adapter\FilesystemAdapter;
+
+/**
+ * @group time-sensitive
+ */
+class Psr6CacheWithAdapterTest extends Psr6CacheTest
+{
+    protected function createCacheItemPool($defaultLifetime = 0)
+    {
+        return new FilesystemAdapter('', $defaultLifetime);
+    }
+}
diff --git a/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheWithoutAdapterTest.php b/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheWithoutAdapterTest.php
new file mode 100644
index 000000000000..a8c4164dcbb1
--- /dev/null
+++ b/src/Symfony/Component/Cache/Tests/Simple/Psr6CacheWithoutAdapterTest.php
@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Tests\Simple;
+
+use Symfony\Component\Cache\Tests\Fixtures\ExternalAdapter;
+
+/**
+ * @group time-sensitive
+ */
+class Psr6CacheWithoutAdapterTest extends Psr6CacheTest
+{
+    protected function createCacheItemPool($defaultLifetime = 0)
+    {
+        return new ExternalAdapter($defaultLifetime);
+    }
+}

From 0b44ad79c66a7dc2c138ca46966a963c4a3ae710 Mon Sep 17 00:00:00 2001
From: George Mponos <gmponos@gmail.com>
Date: Mon, 14 Jan 2019 23:07:15 +0200
Subject: [PATCH 064/103] [Serializer] Docblock about throwing exceptions on
 serializer

---
 .../Component/Serializer/Normalizer/DenormalizerInterface.php | 4 +++-
 .../Component/Serializer/Normalizer/NormalizerInterface.php   | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php b/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
index c3a2bb535632..7a12d20f1132 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DenormalizerInterface.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Serializer\Normalizer;
 
 use Symfony\Component\Serializer\Exception\BadMethodCallException;
+use Symfony\Component\Serializer\Exception\ExceptionInterface;
 use Symfony\Component\Serializer\Exception\ExtraAttributesException;
 use Symfony\Component\Serializer\Exception\InvalidArgumentException;
 use Symfony\Component\Serializer\Exception\LogicException;
@@ -41,8 +42,9 @@ interface DenormalizerInterface
      * @throws ExtraAttributesException Occurs when the item doesn't have attribute to receive given data
      * @throws LogicException           Occurs when the normalizer is not supposed to denormalize
      * @throws RuntimeException         Occurs if the class cannot be instantiated
+     * @throws ExceptionInterface       Occurs for all the other cases of errors
      */
-    public function denormalize($data, $class, $format = null, array $context = array());
+    public function denormalize($data, $class, $format = null, array $context = []);
 
     /**
      * Checks whether the given class is supported for denormalization by this normalizer.
diff --git a/src/Symfony/Component/Serializer/Normalizer/NormalizerInterface.php b/src/Symfony/Component/Serializer/Normalizer/NormalizerInterface.php
index 5cccdb336009..02a211858492 100644
--- a/src/Symfony/Component/Serializer/Normalizer/NormalizerInterface.php
+++ b/src/Symfony/Component/Serializer/Normalizer/NormalizerInterface.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Serializer\Normalizer;
 
 use Symfony\Component\Serializer\Exception\CircularReferenceException;
+use Symfony\Component\Serializer\Exception\ExceptionInterface;
 use Symfony\Component\Serializer\Exception\InvalidArgumentException;
 use Symfony\Component\Serializer\Exception\LogicException;
 
@@ -35,8 +36,9 @@ interface NormalizerInterface
      * @throws CircularReferenceException Occurs when the normalizer detects a circular reference when no circular
      *                                    reference handler can fix it
      * @throws LogicException             Occurs when the normalizer is not called in an expected context
+     * @throws ExceptionInterface         Occurs for all the other cases of errors
      */
-    public function normalize($object, $format = null, array $context = array());
+    public function normalize($object, $format = null, array $context = []);
 
     /**
      * Checks whether the given class is supported for normalization by this normalizer.

From 0d9de7e7e357323d920964c3c57ac86d92e573fa Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Fri, 18 Jan 2019 18:22:25 +0100
Subject: [PATCH 065/103] [Form] ensure compatibility with older PHPUnit mocks

---
 .../Tests/Controller/ControllerTraitTest.php  |   4 +-
 .../Tests/Profiler/TemplateManagerTest.php    |  37 ++--
 src/Symfony/Component/Form/Form.php           |   8 +-
 .../Component/Form/Tests/AbstractFormTest.php |  20 --
 .../Form/Tests/AbstractRequestHandlerTest.php | 185 ++++++++----------
 .../Component/Form/Tests/CompoundFormTest.php | 160 ++++++++-------
 .../FixUrlProtocolListenerTest.php            |   8 +-
 .../MergeCollectionListenerTest.php           |   5 -
 .../EventListener/ResizeFormListenerTest.php  |   5 -
 .../Core/EventListener/TrimListenerTest.php   |   6 +-
 .../CsrfValidationListenerTest.php            |   5 -
 .../HttpFoundationRequestHandlerTest.php      |   4 +-
 .../EventListener/ValidationListenerTest.php  |  36 ++--
 .../Form/Tests/NativeRequestHandlerTest.php   |  81 ++++----
 .../Form/Tests/ResolvedFormTypeTest.php       |  10 +-
 .../Component/Form/Tests/SimpleFormTest.php   |  15 +-
 .../Tests/Mapping/ClassMetadataTest.php       |  33 ++--
 .../Validator/TraceableValidatorTest.php      |   7 +-
 18 files changed, 291 insertions(+), 338 deletions(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
index 01e36d0b7158..e72c558b7edc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php
@@ -15,6 +15,7 @@
 use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\Form\Form;
+use Symfony\Component\Form\FormConfigInterface;
 use Symfony\Component\HttpFoundation\BinaryFileResponse;
 use Symfony\Component\HttpFoundation\File\File;
 use Symfony\Component\HttpFoundation\JsonResponse;
@@ -487,8 +488,7 @@ public function testCreateNotFoundException()
 
     public function testCreateForm()
     {
-        $config = $this->getMockBuilder('Symfony\Component\Form\FormConfigInterface')->getMock();
-        $form = new Form($config);
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
 
         $formFactory = $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock();
         $formFactory->expects($this->once())->method('create')->willReturn($form);
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
index 7d797ec84f9d..18d4cc44b402 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
@@ -13,6 +13,7 @@
 
 use Symfony\Bundle\WebProfilerBundle\Profiler\TemplateManager;
 use Symfony\Bundle\WebProfilerBundle\Tests\TestCase;
+use Symfony\Component\HttpKernel\Profiler\Profile;
 use Twig\Environment;
 
 /**
@@ -57,8 +58,7 @@ protected function setUp()
      */
     public function testGetNameOfInvalidTemplate()
     {
-        $profile = $this->mockProfile();
-        $this->templateManager->getName($profile, 'notexistingpanel');
+        $this->templateManager->getName(new Profile('token'), 'notexistingpanel');
     }
 
     /**
@@ -71,12 +71,7 @@ public function testGetNameValidTemplate()
             ->withAnyParameters()
             ->will($this->returnCallback([$this, 'profilerHasCallback']));
 
-        $profile = $this->mockProfile();
-        $profile->expects($this->any())
-            ->method('hasCollector')
-            ->will($this->returnCallback([$this, 'profileHasCollectorCallback']));
-
-        $this->assertEquals('FooBundle:Collector:foo.html.twig', $this->templateManager->getName($profile, 'foo'));
+        $this->assertEquals('FooBundle:Collector:foo.html.twig', $this->templateManager->getName(new ProfileDummy(), 'foo'));
     }
 
     /**
@@ -85,17 +80,12 @@ public function testGetNameValidTemplate()
      */
     public function testGetTemplates()
     {
-        $profile = $this->mockProfile();
-        $profile->expects($this->any())
-            ->method('hasCollector')
-            ->will($this->returnCallback([$this, 'profilerHasCallback']));
-
         $this->profiler->expects($this->any())
             ->method('has')
             ->withAnyParameters()
             ->will($this->returnCallback([$this, 'profileHasCollectorCallback']));
 
-        $result = $this->templateManager->getTemplates($profile);
+        $result = $this->templateManager->getTemplates(new ProfileDummy());
         $this->assertArrayHasKey('foo', $result);
         $this->assertArrayNotHasKey('bar', $result);
         $this->assertArrayNotHasKey('baz', $result);
@@ -155,3 +145,22 @@ protected function mockProfiler()
         return $this->profiler;
     }
 }
+
+class ProfileDummy extends Profile
+{
+    public function __construct()
+    {
+        parent::__construct('token');
+    }
+
+    public function hasCollector($name)
+    {
+        switch ($name) {
+            case 'foo':
+            case 'bar':
+                return true;
+            default:
+                return false;
+        }
+    }
+}
diff --git a/src/Symfony/Component/Form/Form.php b/src/Symfony/Component/Form/Form.php
index 1ab5d146efd6..1822cf6e18ac 100644
--- a/src/Symfony/Component/Form/Form.php
+++ b/src/Symfony/Component/Form/Form.php
@@ -532,9 +532,11 @@ public function submit($submittedData, $clearMissing = true)
             $submittedData = null;
         } elseif (is_scalar($submittedData)) {
             $submittedData = (string) $submittedData;
-        } elseif (!$this->config->getOption('allow_file_upload') && $this->config->getRequestHandler()->isFileUpload($submittedData)) {
-            $submittedData = null;
-            $this->transformationFailure = new TransformationFailedException('Submitted data was expected to be text or number, file upload given.');
+        } elseif ($this->config->getRequestHandler()->isFileUpload($submittedData)) {
+            if (!$this->config->getOption('allow_file_upload')) {
+                $submittedData = null;
+                $this->transformationFailure = new TransformationFailedException('Submitted data was expected to be text or number, file upload given.');
+            }
         } elseif (\is_array($submittedData) && !$this->config->getCompound() && !$this->config->hasOption('multiple')) {
             $submittedData = null;
             $this->transformationFailure = new TransformationFailedException('Submitted data was expected to be text or number, array given.');
diff --git a/src/Symfony/Component/Form/Tests/AbstractFormTest.php b/src/Symfony/Component/Form/Tests/AbstractFormTest.php
index 235aa3fa98d0..00d9e0fbd485 100644
--- a/src/Symfony/Component/Form/Tests/AbstractFormTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractFormTest.php
@@ -65,26 +65,6 @@ protected function getBuilder($name = 'name', EventDispatcherInterface $dispatch
         return new FormBuilder($name, $dataClass, $dispatcher ?: $this->dispatcher, $this->factory, $options);
     }
 
-    /**
-     * @param string $name
-     *
-     * @return \PHPUnit_Framework_MockObject_MockObject
-     */
-    protected function getMockForm($name = 'name')
-    {
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
-        $config = $this->getMockBuilder('Symfony\Component\Form\FormConfigInterface')->getMock();
-
-        $form->expects($this->any())
-            ->method('getName')
-            ->will($this->returnValue($name));
-        $form->expects($this->any())
-            ->method('getConfig')
-            ->will($this->returnValue($config));
-
-        return $form;
-    }
-
     /**
      * @return \PHPUnit_Framework_MockObject_MockObject
      */
diff --git a/src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php b/src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php
index 2c3de1184b63..dd73dcde23e4 100644
--- a/src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php
@@ -12,6 +12,10 @@
 namespace Symfony\Component\Form\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\Form\Extension\Core\DataMapper\PropertyPathMapper;
+use Symfony\Component\Form\Form;
+use Symfony\Component\Form\FormBuilder;
 use Symfony\Component\Form\FormError;
 use Symfony\Component\Form\FormFactory;
 use Symfony\Component\Form\Forms;
@@ -66,17 +70,16 @@ public function methodProvider()
      */
     public function testSubmitIfNameInRequest($method)
     {
-        $form = $this->getMockForm('param1', $method);
+        $form = $this->createForm('param1', $method);
 
         $this->setRequestData($method, [
             'param1' => 'DATA',
         ]);
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with('DATA', 'PATCH' !== $method);
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertSame('DATA', $form->getData());
     }
 
     /**
@@ -84,7 +87,7 @@ public function testSubmitIfNameInRequest($method)
      */
     public function testDoNotSubmitIfWrongRequestMethod($method)
     {
-        $form = $this->getMockForm('param1', $method);
+        $form = $this->createForm('param1', $method);
 
         $otherMethod = 'POST' === $method ? 'PUT' : 'POST';
 
@@ -92,10 +95,9 @@ public function testDoNotSubmitIfWrongRequestMethod($method)
             'param1' => 'DATA',
         ]);
 
-        $form->expects($this->never())
-            ->method('submit');
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertFalse($form->isSubmitted());
     }
 
     /**
@@ -103,16 +105,15 @@ public function testDoNotSubmitIfWrongRequestMethod($method)
      */
     public function testDoNoSubmitSimpleFormIfNameNotInRequestAndNotGetRequest($method)
     {
-        $form = $this->getMockForm('param1', $method, false);
+        $form = $this->createForm('param1', $method, false);
 
         $this->setRequestData($method, [
             'paramx' => [],
         ]);
 
-        $form->expects($this->never())
-            ->method('submit');
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertFalse($form->isSubmitted());
     }
 
     /**
@@ -120,30 +121,28 @@ public function testDoNoSubmitSimpleFormIfNameNotInRequestAndNotGetRequest($meth
      */
     public function testDoNotSubmitCompoundFormIfNameNotInRequestAndNotGetRequest($method)
     {
-        $form = $this->getMockForm('param1', $method, true);
+        $form = $this->createForm('param1', $method, true);
 
         $this->setRequestData($method, [
             'paramx' => [],
         ]);
 
-        $form->expects($this->never())
-            ->method('submit');
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertFalse($form->isSubmitted());
     }
 
     public function testDoNotSubmitIfNameNotInRequestAndGetRequest()
     {
-        $form = $this->getMockForm('param1', 'GET');
+        $form = $this->createForm('param1', 'GET');
 
         $this->setRequestData('GET', [
             'paramx' => [],
         ]);
 
-        $form->expects($this->never())
-            ->method('submit');
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertFalse($form->isSubmitted());
     }
 
     /**
@@ -151,24 +150,28 @@ public function testDoNotSubmitIfNameNotInRequestAndGetRequest()
      */
     public function testSubmitFormWithEmptyNameIfAtLeastOneFieldInRequest($method)
     {
-        $form = $this->getMockForm('', $method);
-        $form->expects($this->any())
-            ->method('all')
-            ->will($this->returnValue([
-                'param1' => $this->getMockForm('param1'),
-                'param2' => $this->getMockForm('param2'),
-            ]));
+        $form = $this->createForm('', $method, true);
+        $form->add($this->createForm('param1'));
+        $form->add($this->createForm('param2'));
 
         $this->setRequestData($method, $requestData = [
             'param1' => 'submitted value',
             'paramx' => 'submitted value',
         ]);
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with($requestData, 'PATCH' !== $method);
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertTrue($form->get('param1')->isSubmitted());
+        $this->assertSame('submitted value', $form->get('param1')->getData());
+
+        if ('PATCH' === $method) {
+            $this->assertFalse($form->get('param2')->isSubmitted());
+        } else {
+            $this->assertTrue($form->get('param2')->isSubmitted());
+        }
+
+        $this->assertNull($form->get('param2')->getData());
     }
 
     /**
@@ -176,22 +179,17 @@ public function testSubmitFormWithEmptyNameIfAtLeastOneFieldInRequest($method)
      */
     public function testDoNotSubmitFormWithEmptyNameIfNoFieldInRequest($method)
     {
-        $form = $this->getMockForm('', $method);
-        $form->expects($this->any())
-            ->method('all')
-            ->will($this->returnValue([
-                'param1' => $this->getMockForm('param1'),
-                'param2' => $this->getMockForm('param2'),
-            ]));
+        $form = $this->createForm('', $method, true);
+        $form->add($this->createForm('param1'));
+        $form->add($this->createForm('param2'));
 
         $this->setRequestData($method, [
             'paramx' => 'submitted value',
         ]);
 
-        $form->expects($this->never())
-            ->method('submit');
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertFalse($form->isSubmitted());
     }
 
     /**
@@ -199,7 +197,9 @@ public function testDoNotSubmitFormWithEmptyNameIfNoFieldInRequest($method)
      */
     public function testMergeParamsAndFiles($method)
     {
-        $form = $this->getMockForm('par
D7AE
am1', $method);
+        $form = $this->createForm('param1', $method, true);
+        $form->add($this->createForm('field1'));
+        $form->add($this->createBuilder('field2', false, ['allow_file_upload' => true])->getForm());
         $file = $this->getMockFile();
 
         $this->setRequestData($method, [
@@ -212,14 +212,11 @@ public function testMergeParamsAndFiles($method)
             ],
         ]);
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with([
-                'field1' => 'DATA',
-                'field2' => $file,
-            ], 'PATCH' !== $method);
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertSame('DATA', $form->get('field1')->getData());
+        $this->assertSame($file, $form->get('field2')->getData());
     }
 
     /**
@@ -227,7 +224,7 @@ public function testMergeParamsAndFiles($method)
      */
     public function testParamTakesPrecedenceOverFile($method)
     {
-        $form = $this->getMockForm('param1', $method);
+        $form = $this->createForm('param1', $method);
         $file = $this->getMockFile();
 
         $this->setRequestData($method, [
@@ -236,11 +233,10 @@ public function testParamTakesPrecedenceOverFile($method)
             'param1' => $file,
         ]);
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with('DATA', 'PATCH' !== $method);
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertSame('DATA', $form->getData());
     }
 
     /**
@@ -248,7 +244,9 @@ public function testParamTakesPrecedenceOverFile($method)
      */
     public function testSubmitFileIfNoParam($method)
     {
-        $form = $this->getMockForm('param1', $method);
+        $form = $this->createBuilder('param1', false, ['allow_file_upload' => true])
+            ->setMethod($method)
+            ->getForm();
         $file = $this->getMockFile();
 
         $this->setRequestData($method, [
@@ -257,11 +255,10 @@ public function testSubmitFileIfNoParam($method)
             'param1' => $file,
         ]);
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with($file, 'PATCH' !== $method);
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertSame($file, $form->getData());
     }
 
     /**
@@ -269,7 +266,9 @@ public function testSubmitFileIfNoParam($method)
      */
     public function testSubmitMultipleFiles($method)
     {
-        $form = $this->getMockForm('param1', $method);
+        $form = $this->createBuilder('param1', false, ['allow_file_upload' => true])
+            ->setMethod($method)
+            ->getForm();
         $file = $this->getMockFile();
 
         $this->setRequestData($method, [
@@ -280,32 +279,10 @@ public function testSubmitMultipleFiles($method)
             'param3' => $this->getMockFile('3'),
         ]);
 
-        $form->expects($this->once())
-             ->method('submit')
-             ->with($file, 'PATCH' !== $method);
-
         $this->requestHandler->handleRequest($form, $this->request);
-    }
-
-    /**
-     * @dataProvider methodExceptGetProvider
-     */
-    public function testSubmitFileWithNamelessForm($method)
-    {
-        $form = $this->getMockForm(null, $method);
-        $file = $this->getMockFile();
-
-        $this->setRequestData($method, [
-            '' => null,
-        ], [
-            '' => $file,
-        ]);
-
-        $form->expects($this->once())
-             ->method('submit')
-             ->with($file, 'PATCH' !== $method);
 
-        $this->requestHandler->handleRequest($form, $this->request);
+        $this->assertTrue($form->isSubmitted());
+        $this->assertSame($file, $form->getData());
     }
 
     /**
@@ -371,24 +348,26 @@ abstract protected function getMockFile($suffix = '');
 
     abstract protected function getInvalidFile();
 
-    protected function getMockForm($name, $method = null, $compound = true)
+    protected function createForm($name, $method = null, $compound = false)
+    {
+        $config = $this->createBuilder($name, $compound);
+
+        if (null !== $method) {
+            $config->setMethod($method);
+        }
+
+        return new Form($config);
+    }
+
+    protected function createBuilder($name, $compound = false, array $options = [])
     {
-        $config = $this->getMockBuilder('Symfony\Component\Form\FormConfigInterface')->getMock();
-        $config->expects($this->any())
-            ->method('getMethod')
-            ->will($this->returnValue($method));
-        $config->expects($this->any())
-            ->method('getCompound')
-            ->will($this->returnValue($compound));
-
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
-        $form->expects($this->any())
-            ->method('getName')
-            ->will($this->returnValue($name));
-        $form->expects($this->any())
-            ->method('getConfig')
-            ->will($this->returnValue($config));
-
-        return $form;
+        $builder = new FormBuilder($name, null, new EventDispatcher(), $this->getMockBuilder('Symfony\Component\Form\FormFactoryInterface')->getMock(), $options);
+        $builder->setCompound($compound);
+
+        if ($compound) {
+            $builder->setDataMapper(new PropertyPathMapper());
+        }
+
+        return $builder;
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/CompoundFormTest.php b/src/Symfony/Component/Form/Tests/CompoundFormTest.php
index 85c7431bcf70..ba4f26ecc9d8 100644
--- a/src/Symfony/Component/Form/Tests/CompoundFormTest.php
+++ b/src/Symfony/Component/Form/Tests/CompoundFormTest.php
@@ -11,9 +11,12 @@
 
 namespace Symfony\Component\Form\Tests;
 
+use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\Form\Extension\Core\DataMapper\PropertyPathMapper;
 use Symfony\Component\Form\Extension\HttpFoundation\HttpFoundationRequestHandler;
 use Symfony\Component\Form\FormError;
+use Symfony\Component\Form\FormEvent;
+use Symfony\Component\Form\FormEvents;
 use Symfony\Component\Form\Forms;
 use Symfony\Component\Form\FormView;
 use Symfony\Component\Form\SubmitButtonBuilder;
@@ -69,40 +72,35 @@ public function testDisabledFormsValidEvenIfChildrenInvalid()
 
     public function testSubmitForwardsNullIfNotClearMissingButValueIsExplicitlyNull()
     {
-        $child = $this->getMockForm('firstName');
+        $child = $this->createForm('firstName', false);
 
         $this->form->add($child);
 
-        $child->expects($this->once())
-            ->method('submit')
-            ->with($this->equalTo(null));
-
         $this->form->submit(['firstName' => null], false);
+
+        $this->assertNull($this->form->get('firstName')->getData());
     }
 
     public function testSubmitForwardsNullIfValueIsMissing()
     {
-        $child = $this->getMockForm('firstName');
+        $child = $this->createForm('firstName', false);
 
         $this->form->add($child);
 
-        $child->expects($this->once())
-            ->method('submit')
-            ->with($this->equalTo(null));
-
         $this->form->submit([]);
+
+        $this->assertNull($this->form->get('firstName')->getData());
     }
 
     public function testSubmitDoesNotForwardNullIfNotClearMissing()
     {
-        $child = $this->getMockForm('firstName');
+        $child = $this->createForm('firstName', false);
 
         $this->form->add($child);
 
-        $child->expects($this->never())
-            ->method('submit');
-
         $this->form->submit([], false);
+
+        $this->assertFalse($child->isSubmitted());
     }
 
     public function testSubmitDoesNotAddExtraFieldForNullValues()
@@ -120,15 +118,22 @@ public function testSubmitDoesNotAddExtraFieldForNullValues()
 
     public function testClearMissingFlagIsForwarded()
     {
-        $child = $this->getMockForm('firstName');
+        $personForm = $this->createForm('person');
 
-        $this->form->add($child);
+        $firstNameForm = $this->createForm('firstName', false);
+        $personForm->add($firstNameForm);
 
-        $child->expects($this->once())
-            ->method('submit')
-            ->with($this->equalTo('foo'), false);
+        $lastNameForm = $this->createForm('lastName', false);
+        $lastNameForm->setData('last name');
+        $personForm->add($lastNameForm);
 
-        $this->form->submit(['firstName' => 'foo'], false);
+        $this->form->add($personForm);
+        $this->form->submit(['person' => ['firstName' => 'foo']], false);
+
+        $this->assertTrue($firstNameForm->isSubmitted());
+        $this->assertSame('foo', $firstNameForm->getData());
+        $this->assertFalse($lastNameForm->isSubmitted());
+        $this->assertSame('last name', $lastNameForm->getData());
     }
 
     public function testCloneChildren()
@@ -145,10 +150,8 @@ public function testCloneChildren()
 
     public function testNotEmptyIfChildNotEmpty()
     {
-        $child = $this->getMockForm();
-        $child->expects($this->once())
-            ->method('isEmpty')
-            ->will($this->returnValue(false));
+        $child = $this->createForm('name', false);
+        $child->setData('foo');
 
         $this->form->setData(null);
         $this->form->add($child);
@@ -400,29 +403,25 @@ public function testSetDataSupportsDynamicAdditionAndRemovalOfChildren()
             ->setDataMapper(new PropertyPathMapper())
             ->getForm();
 
-        $child = $this->getMockForm('child');
-        $childToBeRemoved = $this->getMockForm('removed');
-        $childToBeAdded = $this->getMockForm('added');
-
-        $form->add($child);
-        $form->add($childToBeRemoved);
-
-        $child->expects($this->once())
-            ->method('setData')
-            ->will($this->returnCallback(function () use ($form, $childToBeAdded) {
+        $childToBeRemoved = $this->createForm('removed', false);
+        $childToBeAdded = $this->createForm('added', false);
+        $child = $this->getBuilder('child', new EventDispatcher())
+            ->setCompound(true)
+            ->setDataMapper(new PropertyPathMapper())
+            ->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) use ($form, $childToBeAdded) {
                 $form->remove('removed');
                 $form->add($childToBeAdded);
-            }));
-
-        $childToBeRemoved->expects($this->never())
-            ->method('setData');
+            })
+            ->getForm();
 
-        // once when it it is created, once when it is added
-        $childToBeAdded->expects($this->exactly(2))
-            ->method('setData');
+        $form->add($child);
+        $form->add($childToBeRemoved);
 
         // pass NULL to all children
         $form->setData([]);
+
+        $this->assertFalse($form->has('removed'));
+        $this->assertTrue($form->has('added'));
     }
 
     public function testSetDataMapsViewDataToChildren()
@@ -453,30 +452,25 @@ public function testSetDataMapsViewDataToChildren()
 
     public function testSubmitSupportsDynamicAdditionAndRemovalOfChildren()
     {
-        $child = $this->getMockForm('child');
-        $childToBeRemoved = $this->getMockForm('removed');
-        $childToBeAdded = $this->getMockForm('added');
-
-        $this->form->add($child);
-        $this->form->add($childToBeRemoved);
-
         $form = $this->form;
 
-        $child->expects($this->once())
-            ->method('submit')
-            ->will($this->returnCallback(function () use ($form, $childToBeAdded) {
+        $childToBeRemoved = $this->createForm('removed');
+        $childToBeAdded = $this->createForm('added');
+        $child = $this->getBuilder('child')
+            ->addEventListener(FormEvents::PRE_SUBMIT, function () use ($form, $childToBeAdded) {
                 $form->remove('removed');
                 $form->add($childToBeAdded);
-            }));
-
-        $childToBeRemoved->expects($this->never())
-            ->method('submit');
+            })
+            ->getForm();
 
-        $childToBeAdded->expects($this->once())
-            ->method('submit');
+        $this->form->add($child);
+        $this->form->add($childToBeRemoved);
 
         // pass NULL to all children
         $this->form->submit([]);
+
+        $this->assertFalse($childToBeRemoved->isSubmitted());
+        $this->assertTrue($childToBeAdded->isSubmitted());
     }
 
     public function testSubmitMapsSubmittedChildrenOntoExistingViewData()
@@ -880,12 +874,24 @@ public function testGetErrorsDeepRecursive()
     public function testCreateViewWithChildren()
     {
         $type = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormTypeInterface')->getMock();
+        $type1 = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormTypeInterface')->getMock();
+        $type2 = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormTypeInterface')->getMock();
         $options = ['a' => 'Foo', 'b' => 'Bar'];
-        $field1 = $this->getMockForm('foo');
-        $field2 = $this->getMockForm('bar');
+        $field1 = $this->getBuilder('foo')
+            ->setType($type1)
+            ->getForm();
+        $field2 = $this->getBuilder('bar')
+            ->setType($type2)
+            ->getForm();
         $view = new FormView();
         $field1View = new FormView();
+        $type1
+            ->method('createView')
+            ->will($this->returnValue($field1View));
         $field2View = new FormView();
+        $type2
+            ->method('createView')
+            ->will($this->returnValue($field2View));
 
         $this->form = $this->getBuilder('form', null, null, $options)
             ->setCompound(true)
@@ -912,24 +918,8 @@ public function testCreateViewWithChildren()
             ->with($view, $this->form, $options)
             ->will($this->returnCallback($assertChildViewsEqual([])));
 
-        // Then add the first child form
-        $field1->expects($this->once())
-            ->method('createView')
-            ->will($this->returnValue($field1View));
-
-        // Then the second child form
-        $field2->expects($this->once())
-            ->method('createView')
-            ->will($this->returnValue($field2View));
-
-        // Again build the view for the form itself. This time the child views
-        // exist.
-        $type->expects($this->once())
-            ->method('finishView')
-            ->with($view, $this->form, $options)
-            ->will($this->returnCallback($assertChildViewsEqual(['foo' => $field1View, 'bar' => $field2View])));
-
         $this->assertSame($view, $this->form->createView());
+        $this->assertSame(['foo' => $field1View, 'bar' => $field2View], $view->children);
     }
 
     public function testNoClickedButtonBeforeSubmission()
@@ -1022,7 +1012,7 @@ public function testDisabledButtonIsNotSubmitted()
             ->getForm();
 
         $form = $this->createForm()
-            ->add($this->getBuilder('text')->getForm())
+            ->add($this->createForm('text', false))
             ->add($submit)
         ;
 
@@ -1067,11 +1057,17 @@ public function testFileUpload()
         $this->assertNull($this->form->get('bar')->getData());
     }
 
-    protected function createForm()
+    protected function createForm($name = 'name', $compound = true)
     {
-        return $this->getBuilder()
-            ->setCompound(true)
-            ->setDataMapper($this->getDataMapper())
-            ->getForm();
+        $builder = $this->getBuilder($name);
+
+        if ($compound) {
+            $builder
+                ->setCompound(true)
+                ->setDataMapper($this->getDataMapper())
+            ;
+        }
+
+        return $builder->getForm();
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/FixUrlProtocolListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/FixUrlProtocolListenerTest.php
index 7861e12197e4..0182aa23d301 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/FixUrlProtocolListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/FixUrlProtocolListenerTest.php
@@ -13,6 +13,8 @@
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Form\Extension\Core\EventListener\FixUrlProtocolListener;
+use Symfony\Component\Form\Form;
+use Symfony\Component\Form\FormConfigInterface;
 use Symfony\Component\Form\FormEvent;
 
 class FixUrlProtocolListenerTest extends TestCase
@@ -20,7 +22,7 @@ class FixUrlProtocolListenerTest extends TestCase
     public function testFixHttpUrl()
     {
         $data = 'www.symfony.com';
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
         $event = new FormEvent($form, $data);
 
         $filter = new FixUrlProtocolListener('http');
@@ -32,7 +34,7 @@ public function testFixHttpUrl()
     public function testSkipKnownUrl()
     {
         $data = 'http://www.symfony.com';
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
         $event = new FormEvent($form, $data);
 
         $filter = new FixUrlProtocolListener('http');
@@ -57,7 +59,7 @@ public function provideUrlsWithSupportedProtocols()
      */
     public function testSkipOtherProtocol($url)
     {
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
         $event = new FormEvent($form, $url);
 
         $filter = new FixUrlProtocolListener('http');
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/MergeCollectionListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/MergeCollectionListenerTest.php
index 41b7d18bd5be..98cd78385a80 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/MergeCollectionListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/MergeCollectionListenerTest.php
@@ -44,11 +44,6 @@ protected function getForm($name = 'name', $propertyPath = null)
         return $this->getBuilder($name)->setAttribute('property_path', $propertyPath)->getForm();
     }
 
-    protected function getMockForm()
-    {
-        return $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
-    }
-
     public function getBooleanMatrix1()
     {
         return [
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
index daa3a8de0948..84a8c1db8884 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
@@ -58,11 +58,6 @@ private function getDataMapper()
         return $this->getMockBuilder('Symfony\Component\Form\DataMapperInterface')->getMock();
     }
 
-    protected function getMockForm()
-    {
-        return $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
-    }
-
     public function testPreSetDataResizesForm()
     {
         $this->form->add($this->getForm('0'));
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/TrimListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/TrimListenerTest.php
index 1ecd3ad705cf..78dae1bd8223 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/TrimListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/TrimListenerTest.php
@@ -13,6 +13,8 @@
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Form\Extension\Core\EventListener\TrimListener;
+use Symfony\Component\Form\Form;
+use Symfony\Component\Form\FormConfigInterface;
 use Symfony\Component\Form\FormEvent;
 
 class TrimListenerTest extends TestCase
@@ -20,7 +22,7 @@ class TrimListenerTest extends TestCase
     public function testTrim()
     {
         $data = ' Foo! ';
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
         $event = new FormEvent($form, $data);
 
         $filter = new TrimListener();
@@ -32,7 +34,7 @@ public function testTrim()
     public function testTrimSkipNonStrings()
     {
         $data = 1234;
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
         $event = new FormEvent($form, $data);
 
         $filter = new TrimListener();
diff --git a/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
index 5bad58888406..43e9acad057c 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Csrf/EventListener/CsrfValidationListenerTest.php
@@ -51,11 +51,6 @@ protected function getDataMapper()
         return $this->getMockBuilder('Symfony\Component\Form\DataMapperInterface')->getMock();
     }
 
-    protected function getMockForm()
-    {
-        return $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
-    }
-
     // https://github.com/symfony/symfony/pull/5838
     public function testStringFormData()
     {
diff --git a/src/Symfony/Component/Form/Tests/Extension/HttpFoundation/HttpFoundationRequestHandlerTest.php b/src/Symfony/Component/Form/Tests/Extension/HttpFoundation/HttpFoundationRequestHandlerTest.php
index f414a511b04c..5597e835542d 100644
--- a/src/Symfony/Component/Form/Tests/Extension/HttpFoundation/HttpFoundationRequestHandlerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/HttpFoundation/HttpFoundationRequestHandlerTest.php
@@ -26,7 +26,7 @@ class HttpFoundationRequestHandlerTest extends AbstractRequestHandlerTest
      */
     public function testRequestShouldNotBeNull()
     {
-        $this->requestHandler->handleRequest($this->getMockForm('name', 'GET'));
+        $this->requestHandler->handleRequest($this->createForm('name', 'GET'));
     }
 
     /**
@@ -34,7 +34,7 @@ public function testRequestShouldNotBeNull()
      */
     public function testRequestShouldBeInstanceOfRequest()
     {
-        $this->requestHandler->handleRequest($this->getMockForm('name', 'GET'), new \stdClass());
+        $this->requestHandler->handleRequest($this->createForm('name', 'GET'), new \stdClass());
     }
 
     protected function setRequestData($method, $data, $files = [])
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/EventListener/ValidationListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/EventListener/ValidationListenerTest.php
index 5cda7eeaf733..855a90d2e347 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/EventListener/ValidationListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/EventListener/ValidationListenerTest.php
@@ -12,10 +12,14 @@
 namespace Symfony\Component\Form\Tests\Extension\Validator\EventListener;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\Form\Extension\Validator\Constraints\Form;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\Form\Extension\Core\DataMapper\PropertyPathMapper;
+use Symfony\Component\Form\Extension\Validator\Constraints\Form as FormConstraint;
 use Symfony\Component\Form\Extension\Validator\EventListener\ValidationListener;
+use Symfony\Component\Form\Form;
 use Symfony\Component\Form\FormBuilder;
 use Symfony\Component\Form\FormEvent;
+use Symfony\Component\Form\FormFactoryInterface;
 use Symfony\Component\PropertyAccess\PropertyPath;
 use Symfony\Component\Validator\ConstraintViolation;
 use Symfony\Component\Validator\ConstraintViolationList;
@@ -67,7 +71,7 @@ protected function setUp()
 
     private function getConstraintViolation($code = null)
     {
-        return new ConstraintViolation($this->message, $this->messageTemplate, $this->params, null, 'prop.path', null, null, $code, new Form());
+        return new ConstraintViolation($this->message, $this->messageTemplate, $this->params, null, 'prop.path', null, null, $code, new FormConstraint());
     }
 
     private function getBuilder($name = 'name', $propertyPath = null, $dataClass = null)
@@ -86,9 +90,16 @@ private function getForm($name = 'name', $propertyPath = null, $dataClass = null
         return $this->getBuilder($name, $propertyPath, $dataClass)->getForm();
     }
 
-    private function getMockForm()
+    private function createForm($name = '', $compound = false)
     {
-        return $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $config = new FormBuilder($name, null, $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), $this->getMockBuilder(FormFactoryInterface::class)->getMock());
+        $config->setCompound($compound);
+
+        if ($compound) {
+            $config->setDataMapper(new PropertyPathMapper());
+        }
+
+        return new Form($config);
     }
 
     // More specific mapping tests can be found in ViolationMapperTest
@@ -110,7 +121,7 @@ public function testMapViolation()
 
     public function testMapViolationAllowsNonSyncIfInvalid()
     {
-        $violation = $this->getConstraintViolation(Form::NOT_SYNCHRONIZED_ERROR);
+        $violation = $this->getConstraintViolation(FormConstraint::NOT_SYNCHRONIZED_ERROR);
         $form = $this->getForm('street');
 
         $this->validator->expects($this->once())
@@ -127,10 +138,10 @@ public function testMapViolationAllowsNonSyncIfInvalid()
 
     public function testValidateIgnoresNonRoot()
     {
-        $form = $this->getMockForm();
-        $form->expects($this->once())
-            ->method('isRoot')
-            ->will($this->returnValue(false));
+        $childForm = $this->createForm('child');
+
+        $form = $this->createForm('', true);
+        $form->add($childForm);
 
         $this->validator->expects($this->never())
             ->method('validate');
@@ -138,15 +149,12 @@ public function testValidateIgnoresNonRoot()
         $this->violationMapper->expects($this->never())
             ->method('mapViolation');
 
-        $this->listener->validateForm(new FormEvent($form, null));
+        $this->listener->validateForm(new FormEvent($childForm, null));
     }
 
     public function testValidateWithEmptyViolationList()
     {
-        $form = $this->getMockForm();
-        $form->expects($this->once())
-            ->method('isRoot')
-            ->will($this->returnValue(true));
+        $form = $this->createForm();
 
         $this->validator
             ->expects($this->once())
diff --git a/src/Symfony/Component/Form/Tests/NativeRequestHandlerTest.php b/src/Symfony/Component/Form/Tests/NativeRequestHandlerTest.php
index db4902e34b9d..077f477d4a23 100644
--- a/src/Symfony/Component/Form/Tests/NativeRequestHandlerTest.php
+++ b/src/Symfony/Component/Form/Tests/NativeRequestHandlerTest.php
@@ -53,12 +53,12 @@ protected function tearDown()
      */
     public function testRequestShouldBeNull()
     {
-        $this->requestHandler->handleRequest($this->getMockForm('name', 'GET'), 'request');
+        $this->requestHandler->handleRequest($this->createForm('name', 'GET'), 'request');
     }
 
     public function testMethodOverrideHeaderTakesPrecedenceIfPost()
     {
-        $form = $this->getMockForm('param1', 'PUT');
+        $form = $this->createForm('param1', 'PUT');
 
         $this->setRequestData('POST', [
             'param1' => 'DATA',
@@ -66,16 +66,15 @@ public function testMethodOverrideHeaderTakesPrecedenceIfPost()
 
         $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'] = 'PUT';
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with('DATA');
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertSame('DATA', $form->getData());
     }
 
     public function testConvertEmptyUploadedFilesToNull()
     {
-        $form = $this->getMockForm('param1', 'POST', false);
+        $form = $this->createForm('param1', 'POST', false);
 
         $this->setRequestData('POST', [], ['param1' => [
             'name' => '',
@@ -85,16 +84,17 @@ public function testConvertEmptyUploadedFilesToNull()
             'size' => 0,
         ]]);
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with($this->identicalTo(null));
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertNull($form->getData());
     }
 
     public function testFixBuggyFilesArray()
     {
-        $form = $this->getMockForm('param1', 'POST', false);
+        $form = $this->createForm('param1', 'POST', true);
+        $fieldForm = $this->createBuilder('field', false, ['allow_file_upload' => true])->getForm();
+        $form->add($fieldForm);
 
         $this->setRequestData('POST', [], ['param1' => [
             'name' => [
@@ -114,24 +114,25 @@ public function testFixBuggyFilesArray()
             ],
         ]]);
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with([
-                'field' => [
-                    'name' => 'upload.txt',
-                    'type' => 'text/plain',
-                    'tmp_name' => 'owfdskjasdfsa',
-                    'error' => UPLOAD_ERR_OK,
-                    'size' => 100,
-                ],
-            ]);
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($form->isSubmitted());
+        $this->assertEquals([
+            'name' => 'upload.txt',
+            'type' => 'text/plain',
+            'tmp_name' => 'owfdskjasdfsa',
+            'error' => UPLOAD_ERR_OK,
+            'size' => 100,
+        ], $fieldForm->getData());
     }
 
     public function testFixBuggyNestedFilesArray()
     {
-        $form = $this->getMockForm('param1', 'POST');
+        $form = $this->createForm('param1', 'POST', true);
+        $fieldForm = $this->createForm('field', null, true);
+        $form->add($fieldForm);
+        $subfieldForm = $this->createBuilder('subfield', false, ['allow_file_upload' => true])->getForm();
+        $fieldForm->add($subfieldForm);
 
         $this->setRequestData('POST', [], ['param1' => [
             'name' => [
@@ -151,26 +152,21 @@ public function testFixBuggyNestedFilesArray()
             ],
         ]]);
 
-        $form->expects($this->once())
-            ->method('submit')
-            ->with([
-                'field' => [
-                    'subfield' => [
-                        'name' => 'upload.txt',
-                        'type' => 'text/plain',
-                        'tmp_name' => 'owfdskjasdfsa',
-                        'error' => UPLOAD_ERR_OK,
-                        'size' => 100,
-                    ],
-                ],
-            ]);
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertTrue($subfieldForm->isSubmitted());
+        $this->assertEquals([
+            'name' => 'upload.txt',
+            'type' => 'text/plain',
+            'tmp_name' => 'owfdskjasdfsa',
+            'error' => UPLOAD_ERR_OK,
+            'size' => 100,
+        ], $subfieldForm->getData());
     }
 
     public function testMethodOverrideHeaderIgnoredIfNotPost()
     {
-        $form = $this->getMockForm('param1', 'POST');
+        $form = $this->createForm('param1', 'POST');
 
         $this->setRequestData('GET', [
                 'param1' => 'DATA',
@@ -178,10 +174,9 @@ public function testMethodOverrideHeaderIgnoredIfNotPost()
 
         $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'] = 'PUT';
 
-        $form->expects($this->never())
-            ->method('submit');
-
         $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertFalse($form->isSubmitted());
     }
 
     protected function setRequestData($method, $data, $files = [])
diff --git a/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php b/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
index cdbb79ae3e0f..32bb8bb78871 100644
--- a/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/ResolvedFormTypeTest.php
@@ -12,6 +12,8 @@
 namespace Symfony\Component\Form\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\Form\Form;
+use Symfony\Component\Form\FormConfigInterface;
 use Symfony\Component\Form\FormTypeExtensionInterface;
 use Symfony\Component\Form\FormTypeInterface;
 use Symfony\Component\Form\ResolvedFormType;
@@ -220,7 +222,7 @@ public function testBuildForm()
 
     public function testCreateView()
     {
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
 
         $view = $this->resolvedType->createView($form);
 
@@ -230,7 +232,7 @@ public function testCreateView()
 
     public function testCreateViewWithParent()
     {
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
         $parentView = $this->getMockBuilder('Symfony\Component\Form\FormView')->getMock();
 
         $view = $this->resolvedType->createView($form, $parentView);
@@ -242,7 +244,7 @@ public function testCreateViewWithParent()
     public function testBuildView()
     {
         $options = ['a' => '1', 'b' => '2'];
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
         $view = $this->getMockBuilder('Symfony\Component\Form\FormView')->getMock();
 
         $i = 0;
@@ -284,7 +286,7 @@ public function testBuildView()
     public function testFinishView()
     {
         $options = ['a' => '1', 'b' => '2'];
-        $form = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $form = new Form($this->getMockBuilder(FormConfigInterface::class)->getMock());
         $view = $this->getMockBuilder('Symfony\Component\Form\FormView')->getMock();
 
         $i = 0;
diff --git a/src/Symfony/Component/Form/Tests/SimpleFormTest.php b/src/Symfony/Component/Form/Tests/SimpleFormTest.php
index ebc2ee03641c..214ff3beab24 100644
--- a/src/Symfony/Component/Form/Tests/SimpleFormTest.php
+++ b/src/Symfony/Component/Form/Tests/SimpleFormTest.php
@@ -218,14 +218,14 @@ public function getDisabledStates()
 
     public function testGetRootReturnsRootOfParent()
     {
-        $parent = $this->getMockForm();
-        $parent->expects($this->once())
-            ->method('getRoot')
-            ->will($this->returnValue('ROOT'));
+        $root = $this->createForm();
+
+        $parent = $this->createForm();
+        $parent->setParent($root);
 
         $this->form->setParent($parent);
 
-        $this->assertEquals('ROOT', $this->form->getRoot());
+        $this->assertSame($root, $this->form->getRoot());
     }
 
     public function testGetRootReturnsSelfIfNoParent()
@@ -720,12 +720,13 @@ public function testCreateViewWithParent()
     {
         $type = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormTypeInterface')->getMock();
         $view = $this->getMockBuilder('Symfony\Component\Form\FormView')->getMock();
-        $parentForm = $this->getMockBuilder('Symfony\Component\Form\Test\FormInterface')->getMock();
+        $parentType = $this->getMockBuilder('Symfony\Component\Form\ResolvedFormTypeInterface')->getMock();
+        $parentForm = $this->getBuilder()->setType($parentType)->getForm();
         $parentView = $this->getMockBuilder('Symfony\Component\Form\FormView')->getMock();
         $form = $this->getBuilder()->setType($type)->getForm();
         $form->setParent($parentForm);
 
-        $parentForm->expects($this->once())
+        $parentType->expects($this->once())
             ->method('createView')
             ->will($this->returnValue($parentView));
 
diff --git a/src/Symfony/Component/Serializer/Tests/Mapping/ClassMetadataTest.php b/src/Symfony/Component/Serializer/Tests/Mapping/ClassMetadataTest.php
index f62967935dc5..636d8a8ab891 100644
--- a/src/Symfony/Component/Serializer/Tests/Mapping/ClassMetadataTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Mapping/ClassMetadataTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Serializer\Tests\Mapping;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\Serializer\Mapping\AttributeMetadata;
 use Symfony\Component\Serializer\Mapping\ClassMetadata;
 
 /**
@@ -29,11 +30,8 @@ public function testAttributeMetadata()
     {
         $classMetadata = new ClassMetadata('c');
 
-        $a1 = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\AttributeMetadataInterface')->getMock();
-        $a1->method('getName')->willReturn('a1');
-
-        $a2 = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\AttributeMetadataInterface')->getMock();
-        $a2->method('getName')->willReturn('a2');
+        $a1 = new AttributeMetadata('a1');
+        $a2 = new AttributeMetadata('a2');
 
         $classMetadata->addAttributeMetadata($a1);
         $classMetadata->addAttributeMetadata($a2);
@@ -46,33 +44,28 @@ public function testMerge()
         $classMetadata1 = new ClassMetadata('c1');
         $classMetadata2 = new ClassMetadata('c2');
 
-        $ac1 = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\AttributeMetadataInterface')->getMock();
-        $ac1->method('getName')->willReturn('a1');
-        $ac1->method('getGroups')->willReturn(['a', 'b']);
-
-        $ac2 = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\AttributeMetadataInterface')->getMock();
-        $ac2->method('getName')->willReturn('a1');
-        $ac2->method('getGroups')->willReturn(['b', 'c']);
+        $ac1 = new AttributeMetadata('a1');
+        $ac1->addGroup('a');
+        $ac1->addGroup('b');
+        $ac2 = new AttributeMetadata('a1');
+        $ac2->addGroup('b');
+        $ac2->addGroup('c');
 
         $classMetadata1->addAttributeMetadata($ac1);
         $classMetadata2->addAttributeMetadata($ac2);
 
         $classMetadata1->merge($classMetadata2);
 
-        $ac1->method('getGroups')->willReturn('a', 'b', 'c');
-
-        $this->assertEquals(['a1' => $ac1], $classMetadata2->getAttributesMetadata());
+        $this->assertSame(['a', 'b', 'c'], $ac1->getGroups());
+        $this->assertEquals(['a1' => $ac1], $classMetadata1->getAttributesMetadata());
     }
 
     public function testSerialize()
     {
         $classMetadata = new ClassMetadata('a');
 
-        $a1 = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\AttributeMetadataInterface')->getMock();
-        $a1->method('getName')->willReturn('b1');
-
-        $a2 = $this->getMockBuilder('Symfony\Component\Serializer\Mapping\AttributeMetadataInterface')->getMock();
-        $a2->method('getName')->willReturn('b2');
+        $a1 = new AttributeMetadata('b1');
+        $a2 = new AttributeMetadata('b2');
 
         $classMetadata->addAttributeMetadata($a1);
         $classMetadata->addAttributeMetadata($a2);
diff --git a/src/Symfony/Component/Validator/Tests/Validator/TraceableValidatorTest.php b/src/Symfony/Component/Validator/Tests/Validator/TraceableValidatorTest.php
index 3d89f4e14238..b80efed27e7b 100644
--- a/src/Symfony/Component/Validator/Tests/Validator/TraceableValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Validator/TraceableValidatorTest.php
@@ -15,7 +15,6 @@
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\ConstraintViolation;
 use Symfony\Component\Validator\ConstraintViolationList;
-use Symfony\Component\Validator\ConstraintViolationListInterface;
 use Symfony\Component\Validator\Context\ExecutionContextInterface;
 use Symfony\Component\Validator\Mapping\MetadataInterface;
 use Symfony\Component\Validator\Validator\ContextualValidatorInterface;
@@ -87,13 +86,13 @@ public function testForwardsToOriginalValidator()
         $expects('startContext')->willReturn($expected = $this->createMock(ContextualValidatorInterface::class));
         $this->assertSame($expected, $validator->startContext(), 'returns original validator startContext() result');
 
-        $expects('validate')->willReturn($expected = $this->createMock(ConstraintViolationListInterface::class));
+        $expects('validate')->willReturn($expected = new ConstraintViolationList());
         $this->assertSame($expected, $validator->validate('value'), 'returns original validator validate() result');
 
-        $expects('validateProperty')->willReturn($expected = $this->createMock(ConstraintViolationListInterface::class));
+        $expects('validateProperty')->willReturn($expected = new ConstraintViolationList());
         $this->assertSame($expected, $validator->validateProperty(new \stdClass(), 'property'), 'returns original validator validateProperty() result');
 
-        $expects('validatePropertyValue')->willReturn($expected = $this->createMock(ConstraintViolationListInterface::class));
+        $expects('validatePropertyValue')->willReturn($expected = new ConstraintViolationList());
         $this->assertSame($expected, $validator->validatePropertyValue(new \stdClass(), 'property', 'value'), 'returns original validator validatePropertyValue() result');
     }
 

From df73ebf00f4a1ac26e13a7187a6dd32836e0328f Mon Sep 17 00:00:00 2001
From: Stadly <magnar@myrtveit.com>
Date: Wed, 23 Jan 2019 11:01:37 +0100
Subject: [PATCH 066/103] [Translation] Concatenated translation messages

---
 .../Translation/Extractor/PhpExtractor.php    | 22 ++++++++++++++-----
 .../Tests/Extractor/PhpExtractorTest.php      |  1 +
 .../fixtures/extractor/translation.html.php   |  8 +++++++
 3 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/src/Symfony/Component/Translation/Extractor/PhpExtractor.php b/src/Symfony/Component/Translation/Extractor/PhpExtractor.php
index bf7da431a7f1..7f4c6e60394c 100644
--- a/src/Symfony/Component/Translation/Extractor/PhpExtractor.php
+++ b/src/Symfony/Component/Translation/Extractor/PhpExtractor.php
@@ -156,9 +156,14 @@ private function getValue(\Iterator $tokenIterator)
     {
         $message = '';
         $docToken = '';
+        $docPart = '';
 
         for (; $tokenIterator->valid(); $tokenIterator->next()) {
             $t = $tokenIterator->current();
+            if ('.' === $t) {
+                // Concatenate with next token
+                continue;
+            }
             if (!isset($t[1])) {
                 break;
             }
@@ -169,19 +174,24 @@ private function getValue(\Iterator $tokenIterator)
                     break;
                 case T_ENCAPSED_AND_WHITESPACE:
                 case T_CONSTANT_ENCAPSED_STRING:
-                    $message .= $t[1];
+                    if ('' === $docToken) {
+                        $message .= PhpStringTokenParser::parse($t[1]);
+                    } else {
+                        $docPart = $t[1];
+                    }
                     break;
                 case T_END_HEREDOC:
-                    return PhpStringTokenParser::parseDocString($docToken, $message);
+                    $message .= PhpStringTokenParser::parseDocString($docToken, $docPart);
+                    $docToken = '';
+                    $docPart = '';
+                    break;
+                case T_WHITESPACE:
+                    break;
                 default:
                     break 2;
             }
         }
 
-        if ($message) {
-            $message = PhpStringTokenParser::parse($message);
-        }
-
         return $message;
     }
 
diff --git a/src/Symfony/Component/Translation/Tests/Extractor/PhpExtractorTest.php b/src/Symfony/Component/Translation/Tests/Extractor/PhpExtractorTest.php
index f6a17d00c0f6..73ccb07cfb07 100644
--- a/src/Symfony/Component/Translation/Tests/Extractor/PhpExtractorTest.php
+++ b/src/Symfony/Component/Translation/Tests/Extractor/PhpExtractorTest.php
@@ -51,6 +51,7 @@ public function testExtraction($resource)
                 $expectedHeredoc => 'prefix'.$expectedHeredoc,
                 $expectedNowdoc => 'prefix'.$expectedNowdoc,
                 '{0} There is no apples|{1} There is one apple|]1,Inf[ There are %count% apples' => 'prefix{0} There is no apples|{1} There is one apple|]1,Inf[ There are %count% apples',
+                'concatenated message with heredoc and nowdoc' => 'prefixconcatenated message with heredoc and nowdoc',
             ],
             'not_messages' => [
                 'other-domain-test-no-params-short-array' => 'prefixother-domain-test-no-params-short-array',
diff --git a/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php b/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
index 11261311a1be..094660335272 100644
--- a/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
+++ b/src/Symfony/Component/Translation/Tests/fixtures/extractor/translation.html.php
@@ -32,6 +32,14 @@
     ['%count%' => 10]
 ); ?>
 
+<?php echo $view['translator']->trans('concatenated'.' message'.<<<EOF
+ with heredoc
+EOF
+.<<<'EOF'
+ and nowdoc
+EOF
+); ?>
+
 <?php echo $view['translator']->trans('other-domain-test-no-params-short-array', [], 'not_messages'); ?>
 
 <?php echo $view['translator']->trans('other-domain-test-no-params-long-array', [], 'not_messages'); ?>

From 81d3716b0d8e29f4268208383d8321f19f0d13e5 Mon Sep 17 00:00:00 2001
From: Alex Teterin <7018407@gmail.com>
Date: Wed, 16 Jan 2019 10:26:23 +0300
Subject: [PATCH 067/103] [Cache] PDO-based cache pool table autocreation does
 not work

---
 .../Component/Cache/Traits/PdoTrait.php       | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/src/Symfony/Component/Cache/Traits/PdoTrait.php b/src/Symfony/Component/Cache/Traits/PdoTrait.php
index 9917bd91f545..6d896fd55514 100644
--- a/src/Symfony/Component/Cache/Traits/PdoTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PdoTrait.php
@@ -306,14 +306,7 @@ protected function doSave(array $values, $lifetime)
 
         $now = time();
         $lifetime = $lifetime ?: null;
-        try {
-            $stmt = $conn->prepare($sql);
-        } catch (TableNotFoundException $e) {
-            if (!$conn->isTransactionActive() || \in_array($this->driver, ['pgsql', 'sqlite', 'sqlsrv'], true)) {
-                $this->createTable();
-            }
-            $stmt = $conn->prepare($sql);
-        }
+        $stmt = $conn->prepare($sql);
 
         if ('sqlsrv' === $driver || 'oci' === $driver) {
             $stmt->bindParam(1, $id);
@@ -340,8 +333,14 @@ protected function doSave(array $values, $lifetime)
         }
 
         foreach ($values as $id => $data) {
-            $stmt->execute();
-
+            try {
+                $stmt->execute();
+            } catch (TableNotFoundException $e) {
+                if (!$conn->isTransactionActive() || \in_array($this->driver, ['pgsql', 'sqlite', 'sqlsrv'], true)) {
+                    $this->createTable();
+                }
+                $stmt->execute();
+            }
             if (null === $driver && !$stmt->rowCount()) {
                 try {
                     $insertStmt->execute();

From a0a7400d6f5405d24529a12c77d27cb48c8b5534 Mon Sep 17 00:00:00 2001
From: James Hudson <james.hudson@capablue.com>
Date: Fri, 11 Jan 2019 07:38:02 +0000
Subject: [PATCH 068/103] [Console] Fixed #29835: ConfirmationQuestion with
 default true for answer '0'

---
 .../Console/Question/ConfirmationQuestion.php |  2 +-
 .../Question/ConfirmationQuestionTest.php     | 62 +++++++++++++++++++
 2 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 src/Symfony/Component/Console/Tests/Question/ConfirmationQuestionTest.php

diff --git a/src/Symfony/Component/Console/Question/ConfirmationQuestion.php b/src/Symfony/Component/Console/Question/ConfirmationQuestion.php
index 150ab27f303b..d871fb8a79b0 100644
--- a/src/Symfony/Component/Console/Question/ConfirmationQuestion.php
+++ b/src/Symfony/Component/Console/Question/ConfirmationQuestion.php
@@ -53,7 +53,7 @@ private function getDefaultNormalizer()
                 return $answer && $answerIsTrue;
             }
 
-            return !$answer || $answerIsTrue;
+            return '' === $answer || $answerIsTrue;
         };
     }
 }
diff --git a/src/Symfony/Component/Console/Tests/Question/ConfirmationQuestionTest.php b/src/Symfony/Component/Console/Tests/Question/ConfirmationQuestionTest.php
new file mode 100644
index 000000000000..83899772a82d
--- /dev/null
+++ b/src/Symfony/Component/Console/Tests/Question/ConfirmationQuestionTest.php
@@ -0,0 +1,62 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Console\Tests\Question;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Question\ConfirmationQuestion;
+
+class ConfirmationQuestionTest extends TestCase
+{
+    /**
+     * @dataProvider normalizerUsecases
+     */
+    public function testDefaultRegexUsecases($default, $answers, $expected, $message)
+    {
+        $sut = new ConfirmationQuestion('A question', $default);
+
+        foreach ($answers as $answer) {
+            $normalizer = $sut->getNormalizer();
+            $actual = $normalizer($answer);
+            $this->assertEquals($expected, $actual, sprintf($message, $answer));
+        }
+    }
+
+    public function normalizerUsecases()
+    {
+        return [
+            [
+                true,
+                ['y', 'Y', 'yes', 'YES', 'yEs', ''],
+                true,
+                'When default is true, the normalizer must return true for "%s"',
+            ],
+            [
+                true,
+                ['n', 'N', 'no', 'NO', 'nO', 'foo', '1', '0'],
+                false,
+                'When default is true, the normalizer must return false for "%s"',
+            ],
+            [
+                false,
+                ['y', 'Y', 'yes', 'YES', 'yEs'],
+                true,
+                'When default is false, the normalizer must return true for "%s"',
+            ],
+            [
+                false,
+                ['n', 'N', 'no', 'NO', 'nO', 'foo', '1', '0', ''],
+                false,
+                'When default is false, the normalizer must return false for "%s"',
+            ],
+        ];
+    }
+}

From 1954187fac1e5d4ffa10d1ab66ad74f4d8a22e50 Mon Sep 17 00:00:00 2001
From: adam-mospan <adammospan@gmail.com>
Date: Thu, 3 Jan 2019 17:40:56 +0200
Subject: [PATCH 069/103] [HttpFoundation] Check file exists before unlink

---
 src/Symfony/Component/HttpFoundation/BinaryFileResponse.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php b/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
index 557577a1ed6c..cf648dfe9d54 100644
--- a/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
+++ b/src/Symfony/Component/HttpFoundation/BinaryFileResponse.php
@@ -305,7 +305,7 @@ public function sendContent()
         fclose($out);
         fclose($file);
 
-        if ($this->deleteFileAfterSend) {
+        if ($this->deleteFileAfterSend && file_exists($this->file->getPathname())) {
             unlink($this->file->getPathname());
         }
 

From 151ee3ee18681a3aadac04e63374c7ad06b62c87 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Fri, 25 Jan 2019 15:52:25 +0100
Subject: [PATCH 070/103] fix merge

---
 .../Tests/Profiler/TemplateManagerTest.php      | 17 -----------------
 1 file changed, 17 deletions(-)

diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
index 18d4cc44b402..927ee0dba94d 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/Profiler/TemplateManagerTest.php
@@ -74,23 +74,6 @@ public function testGetNameValidTemplate()
         $this->assertEquals('FooBundle:Collector:foo.html.twig', $this->templateManager->getName(new ProfileDummy(), 'foo'));
     }
 
-    /**
-     * template should be loaded for 'foo' because other collectors are
-     * missing in profile or in profiler.
-     */
-    public function testGetTemplates()
-    {
-        $this->profiler->expects($this->any())
-            ->method('has')
-            ->withAnyParameters()
-            ->will($this->returnCallback([$this, 'profileHasCollectorCallback']));
-
-        $result = $this->templateManager->getTemplates(new ProfileDummy());
-        $this->assertArrayHasKey('foo', $result);
-        $this->assertArrayNotHasKey('bar', $result);
-        $this->assertArrayNotHasKey('baz', $result);
-    }
-
     public function profilerHasCallback($panel)
     {
         switch ($panel) {

From f419851eb1d63a9c4d1c0c77c1a19486ba4cff81 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Fri, 25 Jan 2019 15:56:12 +0100
Subject: [PATCH 071/103] [Cache] fix create table at prepare time

---
 src/Symfony/Component/Cache/Traits/PdoTrait.php | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Cache/Traits/PdoTrait.php b/src/Symfony/Component/Cache/Traits/PdoTrait.php
index 6d896fd55514..af1a7b22f628 100644
--- a/src/Symfony/Component/Cache/Traits/PdoTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PdoTrait.php
@@ -306,7 +306,14 @@ protected function doSave(array $values, $lifetime)
 
         $now = time();
         $lifetime = $lifetime ?: null;
-        $stmt = $conn->prepare($sql);
+        try {
+            $stmt = $conn->prepare($sql);
+        } catch (TableNotFoundException $e) {
+            if (!$conn->isTransactionActive() || \in_array($this->driver, ['pgsql', 'sqlite', 'sqlsrv'], true)) {
+                $this->createTable();
+            }
+            $stmt = $conn->prepare($sql);
+        }
 

341A
         if ('sqlsrv' === $driver || 'oci' === $driver) {
             $stmt->bindParam(1, $id);

From 23e9985ee02d25c42239c89fc163c2239efedd64 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Fri, 25 Jan 2019 16:35:59 +0100
Subject: [PATCH 072/103] fix merge

---
 src/Symfony/Bridge/Twig/composer.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Bridge/Twig/composer.json b/src/Symfony/Bridge/Twig/composer.json
index ce312e17d8de..26dfc9c68e31 100644
--- a/src/Symfony/Bridge/Twig/composer.json
+++ b/src/Symfony/Bridge/Twig/composer.json
@@ -23,7 +23,7 @@
         "symfony/asset": "~3.4|~4.0",
         "symfony/dependency-injection": "~3.4|~4.0",
         "symfony/finder": "~3.4|~4.0",
-        "symfony/form": "^4.1.11|^4.2.3",
+        "symfony/form": "~4.1.11|^4.2.3",
         "symfony/http-foundation": "~3.4|~4.0",
         "symfony/http-kernel": "~3.4|~4.0",
         "symfony/polyfill-intl-icu": "~1.0",
@@ -41,7 +41,7 @@
         "symfony/workflow": "~3.4|~4.0"
     },
     "conflict": {
-        "symfony/form": "<4.1.2",
+        "symfony/form": "<4.1.11|<4.2.3,>=4.2.0",
         "symfony/console": "<3.4"
     },
     "suggest": {

From 41000f1de0e9a077459eb6b194f07a9e9aa9a6f5 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Fri, 25 Jan 2019 17:59:48 +0100
Subject: [PATCH 073/103] [Security] dont do nested calls to serialize()

---
 .../Authentication/Token/AbstractToken.php    | 30 +++++++++++++------
 .../Authentication/Token/AnonymousToken.php   |  2 +-
 .../Token/PreAuthenticatedToken.php           |  8 +++--
 .../Authentication/Token/RememberMeToken.php  |  2 +-
 .../Token/UsernamePasswordToken.php           |  2 +-
 .../Core/Exception/AccountStatusException.php |  2 +-
 ...stomUserMessageAuthenticationException.php |  2 +-
 .../Exception/UsernameNotFoundException.php   |  2 +-
 .../Token/AbstractTokenTest.php               |  3 ++
 .../Token/PostAuthenticationGuardToken.php    |  4 +--
 10 files changed, 38 insertions(+), 19 deletions(-)

diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
index 536756ff9a6a..a8a297cdb4ce 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
@@ -134,17 +134,16 @@ public function eraseCredentials()
 
     /**
      * {@inheritdoc}
+     *
+     * @param bool $isCalledFromOverridingMethod Must be set to true when called from an overriding method
+     *
+     * @return string|array Returns an array when $isCalledFromOverridingMethod is set to true
      */
     public function serialize()
     {
-        return serialize(
-            [
-                \is_object($this->user) ? clone $this->user : $this->user,
-                $this->authenticated,
-                array_map(function ($role) { return clone $role; }, $this->roles),
-                $this->attributes,
-            ]
-        );
+        $serialized = [$this->user, $this->authenticated, $this->roles, $this->attributes];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**
@@ -152,7 +151,7 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        list($this->user, $this->authenticated, $this->roles, $this->attributes) = unserialize($serialized);
+        list($this->user, $this->authenticated, $this->roles, $this->attributes) = \is_array($serialized) ? $serialized : unserialize($serialized);
     }
 
     /**
@@ -232,6 +231,19 @@ public function __toString()
         return sprintf('%s(user="%s", authenticated=%s, roles="%s")', $class, $this->getUsername(), json_encode($this->authenticated), implode(', ', $roles));
     }
 
+    /**
+     * @internal
+     */
+    protected function doSerialize($serialized, $isCalledFromOverridingMethod)
+    {
+        if (null === $isCalledFromOverridingMethod) {
+            $trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 3);
+            $isCalledFromOverridingMethod = isset($trace[2]['function'], $trace[2]['object']) && 'serialize' === $trace[2]['function'] && $this === $trace[2]['object'];
+        }
+
+        return $isCalledFromOverridingMethod ? $serialized : serialize($serialized);
+    }
+
     private function hasUserChanged(UserInterface $user)
     {
         if (!($this->user instanceof UserInterface)) {
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
index c3af5a3d2290..167c5a8e1cfb 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
@@ -67,7 +67,7 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        list($this->secret, $parentStr) = unserialize($serialized);
+        list($this->secret, $parentStr) = \is_array($serialized) ? $serialized : unserialize($serialized);
         parent::unserialize($parentStr);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
index d49ba54ece5c..c7d70bef245d 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
@@ -76,10 +76,14 @@ public function eraseCredentials()
 
     /**
      * {@inheritdoc}
+     *
+     * @param bool $isCalledFromOverridingMethod Must be set to true when called from an overriding method
      */
     public function serialize()
     {
-        return serialize([$this->credentials, $this->providerKey, parent::serialize()]);
+        $serialized = [$this->credentials, $this->providerKey, parent::serialize(true)];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**
@@ -87,7 +91,7 @@ public function serialize()
      */
     public function unserialize($str)
     {
-        list($this->credentials, $this->providerKey, $parentStr) = unserialize($str);
+        list($this->credentials, $this->providerKey, $parentStr) = \is_array($str) ? $str : unserialize($str);
         parent::unserialize($parentStr);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
index 9512a50eb7ce..8b8ec444fef3 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
@@ -106,7 +106,7 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        list($this->secret, $this->providerKey, $parentStr) = unserialize($serialized);
+        list($this->secret, $this->providerKey, $parentStr) = \is_array($serialized) ? $serialized : unserialize($serialized);
         parent::unserialize($parentStr);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
index 9445f279a32a..0596f0c8a7c8 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
@@ -99,7 +99,7 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        list($this->credentials, $this->providerKey, $parentStr) = unserialize($serialized);
+        list($this->credentials, $this->providerKey, $parentStr) = \is_array($serialized) ? $serialized : unserialize($serialized);
         parent::unserialize($parentStr);
     }
 }
diff --git a/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php b/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
index 503d3fbad48a..d2b192296ee1 100644
--- a/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
+++ b/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
@@ -55,7 +55,7 @@ public function serialize()
      */
     public function unserialize($str)
     {
-        list($this->user, $parentData) = unserialize($str);
+        list($this->user, $parentData) = \is_array($str) ? $str : unserialize($str);
 
         parent::unserialize($parentData);
     }
diff --git a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
index 01a2ccf79997..4ea013913020 100644
--- a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
+++ b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
@@ -72,7 +72,7 @@ public function serialize()
      */
     public function unserialize($str)
     {
-        list($parentData, $this->messageKey, $this->messageData) = unserialize($str);
+        list($parentData, $this->messageKey, $this->messageData) = \is_array($str) ? $str : unserialize($str);
 
         parent::unserialize($parentData);
     }
diff --git a/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php b/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
index 6549307eee19..c36dda7cc368 100644
--- a/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
+++ b/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
@@ -65,7 +65,7 @@ public function serialize()
      */
     public function unserialize($str)
     {
-        list($this->username, $parentData) = unserialize($str);
+        list($this->username, $parentData) = \is_array($str) ? $str : unserialize($str);
 
         parent::unserialize($parentData);
     }
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
index 783519469792..e8c851349387 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
@@ -43,6 +43,9 @@ public function __construct($user, array $roles = [])
         $this->setUser($user);
     }
 
+    /**
+     * @param bool $isCalledFromOverridingMethod Must be set to true when called from an overriding method
+     */
     public function serialize()
     {
         return serialize([$this->credentials, parent::serialize()]);
diff --git a/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php b/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
index ca8549783fdb..f4318d89a545 100644
--- a/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
+++ b/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
@@ -76,7 +76,7 @@ public function getProviderKey()
      */
     public function serialize()
     {
-        return serialize([$this->providerKey, parent::serialize()]);
+        return serialize([$this->providerKey, parent::serialize(true)]);
     }
 
     /**
@@ -84,7 +84,7 @@ public function serialize()
      */
     public function unserialize($serialized)
     {
-        list($this->providerKey, $parentStr) = unserialize($serialized);
+        list($this->providerKey, $parentStr) = \is_array($serialized) ? $serialized : unserialize($serialized);
         parent::unserialize($parentStr);
     }
 }

From 72180342b788b794c0206726ea9276c48c43bcfa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rapha=C3=ABll=20Roussel?= <raphellroussel@gmail.com>
Date: Sat, 26 Jan 2019 20:55:54 +0100
Subject: [PATCH 074/103] Replace gender by eye color in tests

---
 .../Tests/Fixtures/Serialization/Author.php   |  2 +-
 .../Tests/Fixtures/Serialization/Person.php   |  2 +-
 .../Serialization/Resources/author.yml        |  2 +-
 .../Serialization/Resources/person.xml        |  2 +-
 .../Tests/Fixtures/Validation/Author.php      |  2 +-
 .../Tests/Fixtures/Validation/Person.php      |  2 +-
 .../Fixtures/Validation/Resources/author.yml  |  4 +--
 .../Fixtures/Validation/Resources/person.xml  | 10 +++----
 .../Tests/Encoder/XmlEncoderTest.php          | 28 +++++++++----------
 9 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Author.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Author.php
index efb0b430279f..e54d37aacca3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Author.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Author.php
@@ -4,5 +4,5 @@
 
 class Author
 {
-    public $gender;
+    public $eyeColor;
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Person.php b/src/S
F438
ymfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Person.php
index 92e84fbfafac..1da3e02fa53e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Person.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Person.php
@@ -4,5 +4,5 @@
 
 class Person
 {
-    public $gender;
+    public $eyeColor;
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Resources/author.yml b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Resources/author.yml
index 1aa06e31536c..a7f8f6feceae 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Resources/author.yml
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Resources/author.yml
@@ -1,4 +1,4 @@
 Symfony\Bundle\FrameworkBundle\Tests\Fixtures\Serialization\Author:
     attributes:
-        gender:
+        eyeColor:
             groups: ['group1', 'group2']
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Resources/person.xml b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Resources/person.xml
index 89e36afbe407..24f63bf09f13 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Resources/person.xml
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Serialization/Resources/person.xml
@@ -5,7 +5,7 @@
         http://symfony.com/schema/dic/serializer-mapping/serializer-mapping-1.0.xsd"
 >
     <class name="Symfony\Bundle\FrameworkBundle\Tests\Fixtures\Serialization\Person">
-        <attribute name="gender">
+        <attribute name="eyeColor">
             <group>group1</group>
             <group>group2</group>
         </attribute>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Author.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Author.php
index 2a6b48ab4e1e..b02ba30c24fc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Author.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Author.php
@@ -4,5 +4,5 @@
 
 class Author
 {
-    public $gender;
+    public $eyeColor;
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Person.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Person.php
index 104a4a524b79..b8543ba44245 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Person.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Person.php
@@ -4,5 +4,5 @@
 
 class Person
 {
-    public $gender;
+    public $eyeColor;
 }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Resources/author.yml b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Resources/author.yml
index fb03191d7dab..62d42b288a70 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Resources/author.yml
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Resources/author.yml
@@ -1,4 +1,4 @@
 Symfony\Bundle\FrameworkBundle\Tests\Fixtures\Validation\Author:
     properties:
-        gender:
-            - Choice: { choices: [male, female, other], message: Choose a valid gender. }
+        eyeColor:
+            - Choice: { choices: [brown, green, blue], message: Choose a valid eye color. }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Resources/person.xml b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Resources/person.xml
index f58be2dc6c0b..f3adc3c90f79 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Resources/person.xml
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Resources/person.xml
@@ -4,14 +4,14 @@
                     xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
     <class name="Symfony\Bundle\FrameworkBundle\Tests\Fixtures\Validation\Person">
-        <property name="gender">
+        <property name="eyeColor">
             <constraint name="Choice">
                 <option name="choices">
-                    <value>male</value>
-                    <value>female</value>
-                    <value>other</value>
+                    <value>brown</value>
+                    <value>green</value>
+                    <value>blue</value>
                 </option>
-                <option name="message">Choose a valid gender.</option>
+                <option name="message">Choose a valid eye color.</option>
             </constraint>
         </property>
     </class>
diff --git a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
index 509ba0c5ca18..7a6a7d3fbca1 100644
--- a/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Encoder/XmlEncoderTest.php
@@ -190,11 +190,11 @@ public function testEncodeScalarRootAttributes()
     {
         $array = [
             '#' => 'Paul',
-            '@gender' => 'm',
+            '@eye-color' => 'brown',
         ];
 
         $expected = '<?xml version="1.0"?>'."\n".
-            '<response gender="m">Paul</response>'."\n";
+            '<response eye-color="brown">Paul</response>'."\n";
 
         $this->assertEquals($expected, $this->encoder->encode($array, 'xml'));
     }
@@ -203,11 +203,11 @@ public function testEncodeRootAttributes()
     {
         $array = [
             'firstname' => 'Paul',
-            '@gender' => 'm',
+            '@eye-color' => 'brown',
         ];
 
         $expected = '<?xml version="1.0"?>'."\n".
-            '<response gender="m"><firstname>Paul</firstname></response>'."\n";
+            '<response eye-color="brown"><firstname>Paul</firstname></response>'."\n";
 
         $this->assertEquals($expected, $this->encoder->encode($array, 'xml'));
     }
@@ -227,11 +227,11 @@ public function testEncodeCdataWrapping()
     public function testEncodeScalarWithAttribute()
     {
         $array = [
-            'person' => ['@gender' => 'M', '#' => 'Peter'],
+            'person' => ['@eye-color' => 'brown', '#' => 'Peter'],
         ];
 
         $expected = '<?xml version="1.0"?>'."\n".
-            '<response><person gender="M">Peter</person></response>'."\n";
+            '<response><person eye-color="brown">Peter</person></response>'."\n";
 
         $this->assertEquals($expected, $this->encoder->encode($array, 'xml'));
     }
@@ -330,11 +330,11 @@ public function testEncodeSerializerXmlRootNodeNameOption()
         $this->encoder->setSerializer($serializer);
 
         $array = [
-            'person' => ['@gender' => 'M', '#' => 'Peter'],
+            'person' => ['@eye-color' => 'brown', '#' => 'Peter'],
         ];
 
         $expected = '<?xml version="1.0"?>'."\n".
-            '<test><person gender="M">Peter</person></test>'."\n";
+            '<test><person eye-color="brown">Peter</person></test>'."\n";
 
         $this->assertEquals($expected, $serializer->serialize($array, 'xml', $options));
     }
@@ -398,10 +398,10 @@ public function testDecodeWithNamespace()
     public function testDecodeScalarWithAttribute()
     {
         $source = '<?xml version="1.0"?>'."\n".
-            '<response><person gender="M">Peter</person></response>'."\n";
+            '<response><person eye-color="brown">Peter</person></response>'."\n";
 
         $expected = [
-            'person' => ['@gender' => 'M', '#' => 'Peter'],
+            'person' => ['@eye-color' => 'brown', '#' => 'Peter'],
         ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
@@ -410,11 +410,11 @@ public function testDecodeScalarWithAttribute()
     public function testDecodeScalarRootAttributes()
     {
         $source = '<?xml version="1.0"?>'."\n".
-            '<person gender="M">Peter</person>'."\n";
+            '<person eye-color="brown">Peter</person>'."\n";
 
         $expected = [
             '#' => 'Peter',
-            '@gender' => 'M',
+            '@eye-color' => 'brown',
         ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));
@@ -423,12 +423,12 @@ public function testDecodeScalarRootAttributes()
     public function testDecodeRootAttributes()
     {
         $source = '<?xml version="1.0"?>'."\n".
-            '<person gender="M"><firstname>Peter</firstname><lastname>Mac Calloway</lastname></person>'."\n";
+            '<person eye-color="brown"><firstname>Peter</firstname><lastname>Mac Calloway</lastname></person>'."\n";
 
         $expected = [
             'firstname' => 'Peter',
             'lastname' => 'Mac Calloway',
-            '@gender' => 'M',
+            '@eye-color' => 'brown',
         ];
 
         $this->assertEquals($expected, $this->encoder->decode($source, 'xml'));

From bc6e0f80ff3eb13b985d7c43c10573e500c73b11 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rapha=C3=ABll=20Roussel?= <raphellroussel@gmail.com>
Date: Sat, 26 Jan 2019 23:05:56 +0100
Subject: [PATCH 075/103] Remove gendered pronouns

---
 src/Symfony/Component/Form/FormRenderer.php                 | 6 +++---
 .../Component/Form/Tests/AbstractTableLayoutTest.php        | 2 +-
 src/Symfony/Component/HttpFoundation/Tests/RequestTest.php  | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/Symfony/Component/Form/FormRenderer.php b/src/Symfony/Component/Form/FormRenderer.php
index 6bec50652d96..16f0a65ac114 100644
--- a/src/Symfony/Component/Form/FormRenderer.php
+++ b/src/Symfony/Component/Form/FormRenderer.php
@@ -161,9 +161,9 @@ public function searchAndRenderBlock(FormView $view, $blockNameSuffix, array $va
         // to implement a custom "choice_widget" block (no matter in which theme),
         // or to fallback to the block of the parent type, which would be
         // "form_widget" in this example (again, no matter in which theme).
-        // If the designer wants to explicitly fallback to "form_widget" in his
-        // custom "choice_widget", for example because he only wants to wrap
-        // a <div> around the original implementation, he can simply call the
+        // If the designer wants to explicitly fallback to "form_widget" in their
+        // custom "choice_widget", for example because they only want to wrap
+        // a <div> around the original implementation, they can simply call the
         // widget() function again to render the block for the parent type.
         //
         // The second kind is implemented in the following blocks.
diff --git a/src/Symfony/Component/Form/Tests/AbstractTableLayoutTest.php b/src/Symfony/Component/Form/Tests/AbstractTableLayoutTest.php
index 1873a58f0d07..6c09ba8ead45 100644
--- a/src/Symfony/Component/Form/Tests/AbstractTableLayoutTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractTableLayoutTest.php
@@ -470,7 +470,7 @@ public function testFormEndWithRest()
         // Insert the start tag, the end tag should be rendered by the helper
         // Unfortunately this is not valid HTML, because the surrounding table
         // tag is missing. If someone renders a form with table layout
-        // manually, she should call form_rest() explicitly within the <table>
+        // manually, they should call form_rest() explicitly within the <table>
         // tag.
         $this->assertMatchesXpath('<form>'.$html,
 '/form
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index 6a8a73db8541..d266e1f68a4c 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -783,14 +783,14 @@ public function getQueryStringNormalizationData()
 
             // GET parameters, that are submitted from a HTML form, encode spaces as "+" by default (as defined in enctype application/x-www-form-urlencoded).
             // PHP also converts "+" to spaces when filling the global _GET or when using the function parse_str.
-            ['him=John%20Doe&her=Jane+Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes spaces in both encodings "%20" and "+"'],
+            ['baz=Foo%20Baz&bar=Foo+Bar', 'bar=Foo%20Bar&baz=Foo%20Baz', 'normalizes spaces in both encodings "%20" and "+"'],
 
             ['foo[]=1&foo[]=2', 'foo%5B%5D=1&foo%5B%5D=2', 'allows array notation'],
             ['foo=1&foo=2', 'foo=1&foo=2', 'allows repeated parameters'],
             ['pa%3Dram=foo%26bar%3Dbaz&test=test', 'pa%3Dram=foo%26bar%3Dbaz&test=test', 'works with encoded delimiters'],
             ['0', '0', 'allows "0"'],
-            ['Jane Doe&John%20Doe', 'Jane%20Doe&John%20Doe', 'normalizes encoding in keys'],
-            ['her=Jane Doe&him=John%20Doe', 'her=Jane%20Doe&him=John%20Doe', 'normalizes encoding in values'],
+            ['Foo Bar&Foo%20Baz', 'Foo%20Bar&Foo%20Baz', 'normalizes encoding in keys'],
+            ['bar=Foo Bar&baz=Foo%20Baz', 'bar=Foo%20Bar&baz=Foo%20Baz', 'normalizes encoding in values'],
             ['foo=bar&&&test&&', 'foo=bar&test', 'removes unneeded delimiters'],
             ['formula=e=m*c^2', 'formula=e%3Dm%2Ac%5E2', 'correctly treats only the first "=" as delimiter and the next as value'],
 

From 99d2893b78647c3834494a1735d4571ac729e41c Mon Sep 17 00:00:00 2001
From: Roland Franssen <franssen.roland@gmail.com>
Date: Thu, 15 Nov 2018 15:22:47 +0100
Subject: [PATCH 076/103] [VarDumper] Fixed search bar

---
 .../Component/VarDumper/Dumper/HtmlDumper.php | 23 +++++++++++++------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php b/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
index 03502bbd8f21..37651816e662 100644
--- a/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
+++ b/src/Symfony/Component/VarDumper/Dumper/HtmlDumper.php
@@ -500,12 +500,17 @@ function xpathHasClass(className) {
 
         function showCurrent(state)
         {
-            var currentNode = state.current();
+            var currentNode = state.current(), currentRect, searchRect;
             if (currentNode) {
                 reveal(currentNode);
                 highlight(root, currentNode, state.nodes);
                 if ('scrollIntoView' in currentNode) {
-                    currentNode.scrollIntoView();
+                    currentNode.scrollIntoView(true);
+                    currentRect = currentNode.getBoundingClientRect();
+                    searchRect = search.getBoundingClientRect();
+                    if (currentRect.top < (searchRect.top + searchRect.height)) {
+                        window.scrollBy(0, -(searchRect.top + searchRect.height + 5));
+                    }
                 }
             }
             counter.textContent = (state.isEmpty() ? 0 : state.idx + 1) + ' of ' + state.count();
@@ -641,6 +646,7 @@ function showCurrent(state)
     display: block;
     white-space: pre;
     padding: 5px;
+    overflow: initial !important;
 }
 pre.sf-dump:after {
    content: "";
@@ -709,14 +715,16 @@ function showCurrent(state)
     border-radius: 3px;
 }
 pre.sf-dump .sf-dump-search-hidden {
-    display: none;
+    display: none !important;
 }
 pre.sf-dump .sf-dump-search-wrapper {
-    float: right;
     font-size: 0;
     white-space: nowrap;
-    max-width: 100%;
-    text-align: right;
+    margin-bottom: 5px;
+    display: flex;
+    position: -webkit-sticky;
+    position: sticky;
+    top: 5px;
 }
 pre.sf-dump .sf-dump-search-wrapper > * {
     vertical-align: top;
@@ -733,10 +741,11 @@ function showCurrent(state)
     height: 21px;
     font-size: 12px;
     border-right: none;
-    width: 140px;
     border-top-left-radius: 3px;
     border-bottom-left-radius: 3px;
     color: #000;
+    min-width: 15px;
+    width: 100%;
 }
 pre.sf-dump .sf-dump-search-wrapper > .sf-dump-search-input-next,
 pre.sf-dump .sf-dump-search-wrapper > .sf-dump-search-input-previous {

From 1cd30acc2a4bbaca734daa787a82f5985f529f96 Mon Sep 17 00:00:00 2001
From: Tyson Andre <tysonandre775@hotmail.com>
Date: Sun, 27 Jan 2019 17:37:24 -0500
Subject: [PATCH 077/103] Remove a harmless duplicate array key from VarDumper

This has the same field order as the original code.

Detected via static analysis.
---
 src/Symfony/Component/VarDumper/Caster/IntlCaster.php | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/Symfony/Component/VarDumper/Caster/IntlCaster.php b/src/Symfony/Component/VarDumper/Caster/IntlCaster.php
index 7794d6cbccdd..31d5cb395fbb 100644
--- a/src/Symfony/Component/VarDumper/Caster/IntlCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/IntlCaster.php
@@ -132,7 +132,6 @@ public static function castIntlCalendar(\IntlCalendar $c, array $a, Stub $stub,
             Caster::PREFIX_VIRTUAL.'repeated_wall_time_option' => $c->getRepeatedWallTimeOption(),
             Caster::PREFIX_VIRTUAL.'skipped_wall_time_option' => $c->getSkippedWallTimeOption(),
             Caster::PREFIX_VIRTUAL.'time' => $c->getTime(),
-            Caster::PREFIX_VIRTUAL.'type' => $c->getType(),
             Caster::PREFIX_VIRTUAL.'in_daylight_time' => $c->inDaylightTime(),
             Caster::PREFIX_VIRTUAL.'is_lenient' => $c->isLenient(),
             Caster::PREFIX_VIRTUAL.'time_zone' => ($filter & Caster::EXCLUDE_VERBOSE) ? new CutStub($c->getTimeZone()) : $c->getTimeZone(),

From 2e00dfb0c86c6367f6454320716511c1c440346b Mon Sep 17 00:00:00 2001
From: Tyson Andre <tysonandre775@hotmail.com>
Date: Sun, 27 Jan 2019 18:11:39 -0500
Subject: [PATCH 078/103] Fix format strings for deprecation notices

The `%c` conversion specifier expects an integer
(the value of the byte to print)

Detected via static analysis
---
 .../FrameworkBundle/Templating/Helper/TranslatorHelper.php    | 2 +-
 src/Symfony/Component/Translation/IdentityTranslator.php      | 4 ++--
 src/Symfony/Component/Translation/LoggingTranslator.php       | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
index 22fed9921b57..5debaae9d674 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/TranslatorHelper.php
@@ -58,7 +58,7 @@ public function trans($id, array $parameters = [], $domain = 'messages', $locale
      */
     public function transChoice($id, $number, array $parameters = [], $domain = 'messages', $locale = null)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%count%" parameter.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%%count%%" parameter.', __METHOD__), E_USER_DEPRECATED);
 
         if (null === $this->translator) {
             return $this->doTrans($id, ['%count%' => $number] + $parameters, $domain, $locale);
diff --git a/src/Symfony/Component/Translation/IdentityTranslator.php b/src/Symfony/Component/Translation/IdentityTranslator.php
index 41807af04af2..b15792a9b5be 100644
--- a/src/Symfony/Component/Translation/IdentityTranslator.php
+++ b/src/Symfony/Component/Translation/IdentityTranslator.php
@@ -34,7 +34,7 @@ public function __construct(MessageSelector $selector = null)
         $this->selector = $selector;
 
         if (__CLASS__ !== \get_class($this)) {
-            @trigger_error(sprintf('Calling "%s()" is deprecated since Symfony 4.2.'), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Calling "%s()" is deprecated since Symfony 4.2.', __METHOD__), E_USER_DEPRECATED);
         }
     }
 
@@ -45,7 +45,7 @@ public function __construct(MessageSelector $selector = null)
      */
     public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%count%" parameter.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%%count%%" parameter.', __METHOD__), E_USER_DEPRECATED);
 
         if ($this->selector) {
             return strtr($this->selector->choose((string) $id, $number, $locale ?: $this->getLocale()), $parameters);
diff --git a/src/Symfony/Component/Translation/LoggingTranslator.php b/src/Symfony/Component/Translation/LoggingTranslator.php
index 62314b309d58..d6b711d27e81 100644
--- a/src/Symfony/Component/Translation/LoggingTranslator.php
+++ b/src/Symfony/Component/Translation/LoggingTranslator.php
@@ -64,7 +64,7 @@ public function trans($id, array $parameters = [], $domain = null, $locale = nul
      */
     public function transChoice($id, $number, array $parameters = [], $domain = null, $locale = null)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%count%" parameter.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%%count%%" parameter.', __METHOD__), E_USER_DEPRECATED);
 
         if ($this->translator instanceof TranslatorInterface) {
             $trans = $this->translator->trans($id, ['%count%' => $number] + $parameters, $domain, $locale);

From 30b6a4f7bfc1893a29c7f3e101df2cd6b8b87829 Mon Sep 17 00:00:00 2001
From: damaya <dfamayal+72@gmail.com>
Date: Fri, 3 Aug 2018 17:44:03 -0500
Subject: [PATCH 079/103] Support use of hyphen in asset package name

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no
| Tests pass?   | yes (Manual tests only)
| Fixed tickets | #28122
| License       | MIT
| Doc PR        | n/a

According to issue https://github.com/symfony/symfony-docs/pull/10442, we tested in a demo bundle, for example in src/AppBundle/Resources/config/config.yml a package using hyphens: app-client-frontend, and withouth the patch it fails because the package is not recognized. With the patch, it works as expected.
```
framework:
    assets:
        packages:
            app-client-frontend:
                version: "%env(FRONTEND_VERSION)%"
                version_format: '%%2$s/dist/%%1$s'
                base_urls:
                  - "%env(FRONTEND_URL)%"
```
---
 .../Bundle/FrameworkBundle/DependencyInjection/Configuration.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
index 6a6441a39c86..f49c5f11e0ee 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -642,6 +642,7 @@ private function addAssetsSection(ArrayNodeDefinition $rootNode)
                     ->fixXmlConfig('package')
                     ->children()
                         ->arrayNode('packages')
+                            ->normalizeKeys(false)
                             ->useAttributeAsKey('name')
                             ->prototype('array')
                                 ->fixXmlConfig('base_url')

From 5c58b6e8759c595dc53899d55b1e6c86547d2582 Mon Sep 17 00:00:00 2001
From: Anthony MARTIN <anthony.martin@sensiolabs.com>
Date: Mon, 28 Jan 2019 14:09:39 +0100
Subject: [PATCH 080/103] Add PackageNameTest to ConfigurationTest also add in
 the changelog the corresponding entry to this PR

---
 .../DependencyInjection/ConfigurationTest.php | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
index 1be4015713dc..91764a642e8d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -211,6 +211,35 @@ public function testAssetsCanBeEnabled()
         $this->assertEquals($defaultConfig, $config['assets']);
     }
 
+    /**
+     * @dataProvider provideValidAssetsPackageNameConfigurationTests
+     */
+    public function testValidAssetsPackageNameConfiguration($packageName)
+    {
+        $processor = new Processor();
+        $configuration = new Configuration(true);
+        $config = $processor->processConfiguration($configuration, [
+            [
+                'assets' => [
+                    'packages' => [
+                        $packageName => [],
+                    ],
+                ],
+            ],
+        ]);
+
+        $this->assertArrayHasKey($packageName, $config['assets']['packages']);
+    }
+
+    public function provideValidAssetsPackageNameConfigurationTests()
+    {
+        return [
+            ['foobar'],
+            ['foo-bar'],
+            ['foo_bar'],
+        ];
+    }
+
     /**
      * @dataProvider provideInvalidAssetConfigurationTests
      */

From 2fb8f49146ad5f6383b898c2fad03fe1235810ce Mon Sep 17 00:00:00 2001
From: Tyson Andre <tysonandre775@hotmail.com>
Date: Sun, 27 Jan 2019 17:46:00 -0500
Subject: [PATCH 081/103] Remove unreachable code

The try/finally block will either return or throw.
Additionally, $socket was never defined.

Detected via static analysis
---
 src/Symfony/Component/VarDumper/Server/Connection.php | 2 --
 1 file changed, 2 deletions(-)

diff --git a/src/Symfony/Component/VarDumper/Server/Connection.php b/src/Symfony/Component/VarDumper/Server/Connection.php
index 853bf00c229d..8b814cb61ca9 100644
--- a/src/Symfony/Component/VarDumper/Server/Connection.php
+++ b/src/Symfony/Component/VarDumper/Server/Connection.php
@@ -91,7 +91,5 @@ private function createSocket()
         } finally {
             restore_error_handler();
         }
-
-        return $socket;
     }
 }

From 5580473740c935a9615544d11e70d3dae0881d1a Mon Sep 17 00:00:00 2001
From: Samuel NELA <hello@samnela.com>
Date: Mon, 28 Jan 2019 21:23:16 +0100
Subject: [PATCH 082/103] [MonologBridge] Remove unused local variable

---
 .../Handler/FingersCrossed/HttpCodeActivationStrategy.php        | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/Symfony/Bridge/Monolog/Handler/FingersCrossed/HttpCodeActivationStrategy.php b/src/Symfony/Bridge/Monolog/Handler/FingersCrossed/HttpCodeActivationStrategy.php
index 2a1ae70a1a09..b31817d76d51 100644
--- a/src/Symfony/Bridge/Monolog/Handler/FingersCrossed/HttpCodeActivationStrategy.php
+++ b/src/Symfony/Bridge/Monolog/Handler/FingersCrossed/HttpCodeActivationStrategy.php
@@ -60,7 +60,6 @@ public function isHandlerActivated(array $record)
                     continue;
                 }
 
-                $urlBlacklist = null;
                 if (\count($exclusion['urls'])) {
                     return !preg_match('{('.implode('|', $exclusion['urls']).')}i', $request->getPathInfo());
                 }

From c2e0f9701d5330c2302f79acd6abaff0f36983f5 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 29 Jan 2019 08:59:09 +0100
Subject: [PATCH 083/103] [Routing] backport tests from 4.1

---
 .../Routing/Tests/Matcher/UrlMatcherTest.php  | 100 ++++++++++++++++++
 1 file changed, 100 insertions(+)

diff --git a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
index 6a4ba995397b..61f9be335847 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
@@ -502,6 +502,95 @@ public function testSchemeAndMethodMismatch()
         $matcher->match('/');
     }
 
+    public function testSiblingRoutes()
+    {
+        $coll = new RouteCollection();
+        $coll->add('a', (new Route('/a{a}'))->setMethods('POST'));
+        $coll->add('b', (new Route('/a{a}'))->setMethods('PUT'));
+        $coll->add('c', new Route('/a{a}'));
+        $coll->add('d', (new Route('/b{a}'))->setCondition('false'));
+        $coll->add('e', (new Route('/{b}{a}'))->setCondition('false'));
+        $coll->add('f', (new Route('/{b}{a}'))->setRequirements(['b' => 'b']));
+
+        $matcher = $this->getUrlMatcher($coll);
+        $this->assertEquals(['_route' => 'c', 'a' => 'a'], $matcher->match('/aa'));
+        $this->assertEquals(['_route' => 'f', 'b' => 'b', 'a' => 'a'], $matcher->match('/ba'));
+    }
+
+    public function testRequirementWithCapturingGroup()
+    {
+        $coll = new RouteCollection();
+        $coll->add('a', new Route('/{a}/{b}', [], ['a' => '(a|b)']));
+
+        $matcher = $this->getUrlMatcher($coll);
+        $this->assertEquals(['_route' => 'a', 'a' => 'a', 'b' => 'b'], $matcher->match('/a/b'));
+    }
+
+    public function testDotAllWithCatchAll()
+    {
+        $coll = new RouteCollection();
+        $coll->add('a', new Route('/{id}.html', [], ['id' => '.+']));
+        $coll->add('b', new Route('/{all}', [], ['all' => '.+']));
+
+        $matcher = $this->getUrlMatcher($coll);
+        $this->assertEquals(['_route' => 'a', 'id' => 'foo/bar'], $matcher->match('/foo/bar.html'));
+    }
+
+    public function testHostPattern()
+    {
+        $coll = new RouteCollection();
+        $coll->add('a', new Route('/{app}/{action}/{unused}', [], [], [], '{host}'));
+
+        $expected = [
+            '_route' => 'a',
+            'app' => 'an_app',
+            'action' => 'an_action',
+            'unused' => 'unused',
+            'host' => 'foo',
+        ];
+        $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'GET', 'foo'));
+        $this->assertEquals($expected, $matcher->match('/an_app/an_action/unused'));
+    }
+
+    public function testHostWithDot()
+    {
+        $coll = new RouteCollection();
+        $coll->add('a', new Route('/foo', [], [], [], 'foo.example.com'));
+        $coll->add('b', new Route('/bar/{baz}'));
+
+        $matcher = $this->getUrlMatcher($coll);
+        $this->assertEquals('b', $matcher->match('/bar/abc.123')['_route']);
+    }
+
+    public function testSlashVariant()
+    {
+        $coll = new RouteCollection();
+        $coll->add('a', new Route('/foo/{bar}', [], ['bar' => '.*']));
+
+        $matcher = $this->getUrlMatcher($coll);
+        $this->assertEquals('a', $matcher->match('/foo/')['_route']);
+    }
+
+    public function testSlashWithVerb()
+    {
+        $coll = new RouteCollection();
+        $coll->add('a', new Route('/{foo}', [], [], [], '', [], ['put', 'delete']));
+        $coll->add('b', new Route('/bar/'));
+
+        $matcher = $this->getUrlMatcher($coll);
+        $this->assertSame(['_route' => 'b'], $matcher->match('/bar/'));
+
+        $coll = new RouteCollection();
+        $coll->add('a', new Route('/dav/{foo}', [], ['foo' => '.*'], [], '', [], ['GET', 'OPTIONS']));
+
+        $matcher = $this->getUrlMatcher($coll, new RequestContext('', 'OPTIONS'));
+        $expected = [
+            '_route' => 'a',
+            'foo' => 'files/bar/',
+        ];
+        $this->assertEquals($expected, $matcher->match('/dav/files/bar/'));
+    }
+
     public function testSlashAndVerbPrecedence()
     {
         $coll = new RouteCollection();
@@ -527,6 +616,17 @@ public function testSlashAndVerbPrecedence()
         $this->assertEquals($expected, $matcher->match('/api/customers/123/contactpersons'));
     }
 
+    public function testGreedyTrailingRequirement()
+    {
+        $coll = new RouteCollection();
+        $coll->add('a', new Route('/{a}', [], ['a' => '.+']));
+
+        $matcher = $this->getUrlMatcher($coll);
+
+        $this->assertEquals(['_route' => 'a', 'a' => 'foo'], $matcher->match('/foo'));
+        $this->assertEquals(['_route' => 'a', 'a' => 'foo/'], $matcher->match('/foo/'));
+    }
+
     protected function getUrlMatcher(RouteCollection $routes, RequestContext $context = null)
     {
         return new UrlMatcher($routes, $context ?: new RequestContext());

From 10256fc4fdec3b668b2e046f9294b7b518a1ffe2 Mon Sep 17 00:00:00 2001
From: Renan <renan@renandelima.com>
Date: Mon, 28 Jan 2019 11:33:49 +0100
Subject: [PATCH 084/103] skip native serialize among child and parent
 serializable objects

---
 .../Authentication/Token/AbstractToken.php    |  4 ----
 .../Authentication/Token/AnonymousToken.php   |  4 +++-
 .../Token/PreAuthenticatedToken.php           |  2 --
 .../Authentication/Token/RememberMeToken.php  |  8 +++----
 .../Token/UsernamePasswordToken.php           |  4 +++-
 .../Core/Exception/AccountStatusException.php |  7 +++---
 .../Exception/AuthenticationException.php     | 24 ++++++++++++++++---
 ...stomUserMessageAuthenticationException.php |  8 +++----
 .../Exception/UsernameNotFoundException.php   |  7 +++---
 .../Token/AbstractTokenTest.php               |  6 +++--
 ...UserMessageAuthenticationExceptionTest.php | 15 ++++++++++++
 .../Token/PostAuthenticationGuardToken.php    |  4 +++-
 12 files changed, 61 insertions(+), 32 deletions(-)

diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
index a8a297cdb4ce..a65b2b417a75 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/AbstractToken.php
@@ -134,10 +134,6 @@ public function eraseCredentials()
 
     /**
      * {@inheritdoc}
-     *
-     * @param bool $isCalledFromOverridingMethod Must be set to true when called from an overriding method
-     *
-     * @return string|array Returns an array when $isCalledFromOverridingMethod is set to true
      */
     public function serialize()
     {
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
index 167c5a8e1cfb..1ee85363c492 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/AnonymousToken.php
@@ -59,7 +59,9 @@ public function getSecret()
      */
     public function serialize()
     {
-        return serialize([$this->secret, parent::serialize()]);
+        $serialized = [$this->secret, parent::serialize(true)];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
index c7d70bef245d..ddad0a539cd3 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/PreAuthenticatedToken.php
@@ -76,8 +76,6 @@ public function eraseCredentials()
 
     /**
      * {@inheritdoc}
-     *
-     * @param bool $isCalledFromOverridingMethod Must be set to true when called from an overriding method
      */
     public function serialize()
     {
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
index 8b8ec444fef3..031e4c6b98c7 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/RememberMeToken.php
@@ -94,11 +94,9 @@ public function getCredentials()
      */
     public function serialize()
     {
-        return serialize([
-            $this->secret,
-            $this->providerKey,
-            parent::serialize(),
-        ]);
+        $serialized = [$this->secret, $this->providerKey, parent::serialize(true)];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php b/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
index 0596f0c8a7c8..3c052722bee3 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/UsernamePasswordToken.php
@@ -91,7 +91,9 @@ public function eraseCredentials()
      */
     public function serialize()
     {
-        return serialize([$this->credentials, $this->providerKey, parent::serialize()]);
+        $serialized = [$this->credentials, $this->providerKey, parent::serialize(true)];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php b/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
index d2b192296ee1..cb91b42364bc 100644
--- a/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
+++ b/src/Symfony/Component/Security/Core/Exception/AccountStatusException.php
@@ -44,10 +44,9 @@ public function setUser(UserInterface $user)
      */
     public function serialize()
     {
-        return serialize([
-            $this->user,
-            parent::serialize(),
-        ]);
+        $serialized = [$this->user, parent::serialize(true)];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Exception/AuthenticationException.php b/src/Symfony/Component/Security/Core/Exception/AuthenticationException.php
index e0d1e471e8f9..2c6c7344a467 100644
--- a/src/Symfony/Component/Security/Core/Exception/AuthenticationException.php
+++ b/src/Symfony/Component/Security/Core/Exception/AuthenticationException.php
@@ -38,15 +38,33 @@ public function setToken(TokenInterface $token)
         $this->token = $token;
     }
 
+    /**
+     * {@inheritdoc}
+     */
     public function serialize()
     {
-        return serialize([
+        $serialized = [
             $this->token,
             $this->code,
             $this->message,
             $this->file,
             $this->line,
-        ]);
+        ];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
+    }
+
+    /**
+     * @internal
+     */
+    protected function doSerialize($serialized, $isCalledFromOverridingMethod)
+    {
+        if (null === $isCalledFromOverridingMethod) {
+            $trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 3);
+            $isCalledFromOverridingMethod = isset($trace[2]['function'], $trace[2]['object']) && 'serialize' === $trace[2]['function'] && $this === $trace[2]['object'];
+        }
+
+        return $isCalledFromOverridingMethod ? $serialized : serialize($serialized);
     }
 
     public function unserialize($str)
@@ -57,7 +75,7 @@ public function unserialize($str)
             $this->message,
             $this->file,
             $this->line
-        ) = unserialize($str);
+        ) = \is_array($str) ? $str : unserialize($str);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
index 4ea013913020..1faf6d9d5341 100644
--- a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
+++ b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
@@ -60,11 +60,9 @@ public function getMessageData()
      */
     public function serialize()
     {
-        return serialize([
-            parent::serialize(),
-            $this->messageKey,
-            $this->messageData,
-        ]);
+        return serialize([parent::serialize(true), $this->messageKey, $this->messageData]);
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php b/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
index c36dda7cc368..b4b8047f341f 100644
--- a/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
+++ b/src/Symfony/Component/Security/Core/Exception/UsernameNotFoundException.php
@@ -54,10 +54,9 @@ public function setUsername($username)
      */
     public function serialize()
     {
-        return serialize([
-            $this->username,
-            parent::serialize(),
-        ]);
+        $serialized = [$this->username, parent::serialize(true)];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
index e8c851349387..8280366d4af6 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Token/AbstractTokenTest.php
@@ -44,11 +44,13 @@ public function __construct($user, array $roles = [])
     }
 
     /**
-     * @param bool $isCalledFromOverridingMethod Must be set to true when called from an overriding method
+     * {@inheritdoc}
      */
     public function serialize()
     {
-        return serialize([$this->credentials, parent::serialize()]);
+        $serialized = [$this->credentials, parent::serialize(true)];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     public function unserialize($serialized)
diff --git a/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php b/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
index ebf94384c0da..d69d3bffcb54 100644
--- a/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Security\Core\Tests\Exception;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
 use Symfony\Component\Security\Core\Exception\CustomUserMessageAuthenticationException;
 
 class CustomUserMessageAuthenticationExceptionTest extends TestCase
@@ -24,4 +25,18 @@ public function testConstructWithSAfeMessage()
         $this->assertEquals(['foo' => true], $e->getMessageData());
         $this->assertEquals('SAFE MESSAGE', $e->getMessage());
     }
+
+    public function testSharedSerializedData()
+    {
+        $token = new AnonymousToken('foo', 'bar');
+
+        $exception = new CustomUserMessageAuthenticationException();
+        $exception->setToken($token);
+        $exception->setSafeMessage('message', ['token' => $token]);
+
+        $processed = unserialize(serialize($exception));
+        $this->assertEquals($token, $processed->getToken());
+        $this->assertEquals($token, $processed->getMessageData()['token']);
+        $this->assertSame($processed->getToken(), $processed->getMessageData()['token']);
+    }
 }
diff --git a/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php b/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
index f4318d89a545..17e01ebf8dd0 100644
--- a/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
+++ b/src/Symfony/Component/Security/Guard/Token/PostAuthenticationGuardToken.php
@@ -76,7 +76,9 @@ public function getProviderKey()
      */
     public function serialize()
     {
-        return serialize([$this->providerKey, parent::serialize(true)]);
+        $serialized = [$this->providerKey, parent::serialize(true)];
+
+        return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
 
     /**

From 2bb8890bbb648c82a887563bbb2572f01483d748 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 29 Jan 2019 08:59:09 +0100
Subject: [PATCH 085/103] [Routing] dont redirect routes with greedy trailing
 vars with no explicit slash

---
 .../Matcher/Dumper/PhpMatcherDumper.php       | 44 +++-----------
 .../Component/Routing/Matcher/UrlMatcher.php  | 19 +++---
 .../Tests/Fixtures/dumper/url_matcher1.php    | 33 +++--------
 .../Tests/Fixtures/dumper/url_matcher10.php   | 15 ++---
 .../Tests/Fixtures/dumper/url_matcher11.php   | 17 ++----
 .../Tests/Fixtures/dumper/url_matcher12.php   | 15 ++---
 .../Tests/Fixtures/dumper/url_matcher13.php   | 12 +---
 .../Tests/Fixtures/dumper/url_matcher2.php    | 59 ++++---------------
 .../Tests/Fixtures/dumper/url_matcher3.php    | 15 ++---
 .../Tests/Fixtures/dumper/url_matcher5.php    | 17 ++----
 .../Tests/Fixtures/dumper/url_matcher6.php    | 15 ++---
 .../Tests/Fixtures/dumper/url_matcher7.php    | 17 ++----
 .../Tests/Fixtures/dumper/url_matcher8.php    | 15 ++---
 13 files changed, 80 insertions(+), 213 deletions(-)

diff --git a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
index ce6baef93960..9d1d590e6c80 100644
--- a/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
+++ b/src/Symfony/Component/Routing/Matcher/Dumper/PhpMatcherDumper.php
@@ -558,34 +558,27 @@ private function compileSwitchDefault(bool $hasVars, bool $matchHost): string
             $code = '';
         }
 
-        $code .= $hasVars ? '
-                if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                    break;
-                }' : '
-                break;';
-
         $code = sprintf(<<<'EOF'
-            if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {%s
+            if ('/' !== $pathinfo && %s$hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {%s
+                break;
             }
 
 EOF
             ,
+            $hasVars ? '!$hasTrailingVar && ' : '',
             $code
         );
 
         if ($hasVars) {
             $code = <<<'EOF'
 
-            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                // no-op
-            } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                $matches = $n;
-            } else {
-                $hasTrailingSlash = true;
-            }
+            $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
 
 EOF
                 .$code.<<<'EOF'
+            if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                $matches = $n;
+            }
 
             foreach ($vars as $i => $v) {
                 if (isset($matches[1 + $i])) {
@@ -665,31 +658,10 @@ private function compileRoute(Route $route, string $name, bool $checkHost, bool
         if ('/' !== $pathinfo && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
             $matches = $n;
         }
-EOF;
-        } elseif ($this->supportsRedirections && (!$methods || isset($methods['GET']))) {
-            $code .= <<<'EOF'
-        $hasTrailingSlash = false;
-        if ($trimmedPathinfo === $pathinfo) {
-            // no-op
-        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-            $matches = $n;
-        } else {
-            $hasTrailingSlash = true;
-        }
-
-        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {%s
-            if ($trimmedPathinfo === $pathinfo) {
-                goto %s;
-            }
-        }
 EOF;
         } else {
             $code .= <<<'EOF'
-        if ($trimmedPathinfo === $pathinfo) {
-            // no-op
-        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-            $matches = $n;
-        } elseif ('/' !== $pathinfo) {
+        if ($trimmedPathinfo !== $pathinfo) {
             goto %2$s;
         }
 EOF;
diff --git a/src/Symfony/Component/Routing/Matcher/UrlMatcher.php b/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
index 5827c9053588..7329abdcd758 100644
--- a/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
+++ b/src/Symfony/Component/Routing/Matcher/UrlMatcher.php
@@ -156,21 +156,18 @@ protected function matchCollection($pathinfo, RouteCollection $routes)
                 continue;
             }
 
-            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar = preg_match('#\{\w+\}/?$#', $route->getPath())) {
-                // no-op
-            } elseif (preg_match($regex, $trimmedPathinfo, $m)) {
-                $matches = $m;
-            } else {
-                $hasTrailingSlash = true;
-            }
+            $hasTrailingVar = $trimmedPathinfo !== $pathinfo && preg_match('#\{\w+\}/?$#', $route->getPath());
 
-            if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+            if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                 if ($supportsTrailingSlash && (!$requiredMethods || \in_array('GET', $requiredMethods))) {
                     return $this->allow = $this->allowSchemes = [];
                 }
-                if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                    continue;
-                }
+
+                continue;
+            }
+
+            if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, $trimmedPathinfo, $m)) {
+                $matches = $m;
             }
 
             $hostMatches = [];
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
index 43264ca13409..8f73a63a2cec 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
@@ -187,11 +187,7 @@ public function match($pathinfo)
                         break;
                     case 160:
                         // foo1
-                        if ($trimmedPathinfo === $pathinfo) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } elseif ('/' !== $pathinfo) {
+                        if ($trimmedPathinfo !== $pathinfo) {
                             goto not_foo1;
                         }
 
@@ -209,11 +205,7 @@ public function match($pathinfo)
                         break;
                     case 204:
                         // foo2
-                        if ($trimmedPathinfo === $pathinfo) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } elseif ('/' !== $pathinfo) {
+                        if ($trimmedPathinfo !== $pathinfo) {
                             goto not_foo2;
                         }
 
@@ -225,11 +217,7 @@ public function match($pathinfo)
                         break;
                     case 279:
                         // foo3
-                        if ($trimmedPathinfo === $pathinfo) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } elseif ('/' !== $pathinfo) {
+                        if ($trimmedPathinfo !== $pathinfo) {
                             goto not_foo3;
                         }
 
@@ -262,17 +250,12 @@ public function match($pathinfo)
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                            break;
                         }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
index c2547956fddc..abec42c0b711 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher10.php
@@ -2794,17 +2794,12 @@ public function match($pathinfo)
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                            break;
                         }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
index 1a4f549d09bb..325af4b7098d 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher11.php
@@ -119,20 +119,15 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
-                        }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
                                 return $allow = $allowSchemes = [];
                             }
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                            break;
+                        }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
index 5ffc0c1b48cd..1fb5f9097fe4 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher12.php
@@ -64,17 +64,12 @@ public function match($pathinfo)
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                            break;
                         }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
index e4b78e01dbdf..7ef82709570a 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher13.php
@@ -44,11 +44,7 @@ public function match($pathinfo)
                 switch ($m = (int) $matches['MARK']) {
                     case 56:
                         // r1
-                        if ($trimmedPathinfo === $pathinfo) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } elseif ('/' !== $pathinfo) {
+                        if ($trimmedPathinfo !== $pathinfo) {
                             goto not_r1;
                         }
 
@@ -58,11 +54,7 @@ public function match($pathinfo)
                         not_r1:
 
                         // r2
-                        if ($trimmedPathinfo === $pathinfo) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } elseif ('/' !== $pathinfo) {
+                        if ($trimmedPathinfo !== $pathinfo) {
                             goto not_r2;
                         }
 
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
index 3426b358cbf7..b7e03db8acc9 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
@@ -230,11 +230,7 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
                         break;
                     case 160:
                         // foo1
-                        if ($trimmedPathinfo === $pathinfo) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } elseif ('/' !== $pathinfo) {
+                        if ($trimmedPathinfo !== $pathinfo) {
                             goto not_foo1;
                         }
 
@@ -252,22 +248,8 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
                         break;
                     case 204:
                         // foo2
-                        $hasTrailingSlash = false;
-                        if ($trimmedPathinfo === $pathinfo) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = tru
10000
e;
-                        }
-
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
-                            if ('GET' === $canonicalMethod) {
-                                return $allow = $allowSchemes = [];
-                            }
-                            if ($trimmedPathinfo === $pathinfo) {
-                                goto not_foo2;
-                            }
+                        if ($trimmedPathinfo !== $pathinfo) {
+                            goto not_foo2;
                         }
 
                         $matches = ['foo1' => $matches[1] ?? null];
@@ -278,22 +260,8 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
                         break;
                     case 279:
                         // foo3
-                        $hasTrailingSlash = false;
-                        if ($trimmedPathinfo === $pathinfo) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
-                        }
-
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
-                            if ('GET' === $canonicalMethod) {
-                                return $allow = $allowSchemes = [];
-                            }
-                            if ($trimmedPathinfo === $pathinfo) {
-                                goto not_foo3;
-                            }
+                        if ($trimmedPathinfo !== $pathinfo) {
+                            goto not_foo3;
                         }
 
                         $matches = ['_locale' => $matches[1] ?? null, 'foo' => $matches[2] ?? null];
@@ -325,20 +293,15 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
-                        }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
                                 return $allow = $allowSchemes = [];
                             }
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                            break;
+                        }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
index fa0549606ba7..5f2239fede88 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php
@@ -84,17 +84,12 @@ public function match($pathinfo)
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                            break;
                         }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
index 4bd4b08f5fd8..21190f42d06a 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher5.php
@@ -124,20 +124,15 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
-                        }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
                                 return $allow = $allowSchemes = [];
                             }
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                            break;
+                        }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
index caa2e3e220ac..33b76f7527cf 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher6.php
@@ -98,17 +98,12 @@ public function match($pathinfo)
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                            break;
                         }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
index 2c0b58b10614..acf2a190a705 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher7.php
@@ -136,20 +136,15 @@ private function doMatch(string $pathinfo, array &$allow = [], array &$allowSche
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
-                        }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
                             if ('GET' === $canonicalMethod && (!$requiredMethods || isset($requiredMethods['GET']))) {
                                 return $allow = $allowSchemes = [];
                             }
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                            break;
+                        }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
index edbbb29cefa0..ebdbc5ccb593 100644
--- a/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher8.php
@@ -52,17 +52,12 @@ public function match($pathinfo)
 
                         list($ret, $vars, $requiredMethods, $requiredSchemes, $hasTrailingSlash, $hasTrailingVar) = $routes[$m];
 
-                        if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                            // no-op
-                        } elseif (preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
-                            $matches = $n;
-                        } else {
-                            $hasTrailingSlash = true;
+                        $hasTrailingVar = $trimmedPathinfo !== $pathinfo && $hasTrailingVar;
+                        if ('/' !== $pathinfo && !$hasTrailingVar && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
+                            break;
                         }
-                        if ('/' !== $pathinfo && $hasTrailingSlash === ($trimmedPathinfo === $pathinfo)) {
-                            if ($trimmedPathinfo === $pathinfo || !$hasTrailingVar) {
-                                break;
-                            }
+                        if ($hasTrailingSlash && $hasTrailingVar && preg_match($regex, rtrim($matchedPathinfo, '/') ?: '/', $n) && $m === (int) $n['MARK']) {
+                            $matches = $n;
                         }
 
                         foreach ($vars as $i => $v) {

From 3cfb558f03b7f33257c69a1b0e2a1f2f410199c6 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 29 Jan 2019 11:03:44 +0100
Subject: [PATCH 086/103] [HttpKernel] fix nested calls to serialize when using
 DataCollector

---
 .../Component/HttpKernel/DataCollector/DataCollector.php   | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
index de19678a30d8..4346e0ec0f8e 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
@@ -42,12 +42,15 @@ abstract class DataCollector implements DataCollectorInterface, \Serializable
 
     public function serialize()
     {
-        return serialize($this->data);
+        $trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2);
+        $isCalledFromOverridingMethod = isset($trace[1]['function'], $trace[1]['object']) && 'serialize' === $trace[1]['function'] && $this === $trace[1]['object'];
+
+        return $isCalledFromOverridingMethod ? $this->data : serialize($this->data);
     }
 
     public function unserialize($data)
     {
-        $this->data = unserialize($data);
+        $this->data = \is_array($data) ? $data : unserialize($data);
     }
 
     /**

From 48e5df87a3195f9fcb85ee42e6dff157779c4544 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 29 Jan 2019 11:14:57 +0100
Subject: [PATCH 087/103] [Cache] fix connecting using socket with phpredis

---
 src/Symfony/Component/Cache/Traits/RedisTrait.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
index 43dbb4363965..0276c4fb6de6 100644
--- a/src/Symfony/Component/Cache/Traits/RedisTrait.php
+++ b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -156,7 +156,7 @@ public static function createConnection($dsn, array $options = [])
 
             $initializer = function ($redis) use ($connect, $params, $dsn, $auth, $hosts) {
                 try {
-                    @$redis->{$connect}($hosts[0]['host'], $hosts[0]['port'], $params['timeout'], (string) $params['persistent_id'], $params['retry_interval']);
+                    @$redis->{$connect}($hosts[0]['host'] ?? $hosts[0]['path'], $hosts[0]['port'] ?? null, $params['timeout'], (string) $params['persistent_id'], $params['retry_interval']);
                 } catch (\RedisException $e) {
                     throw new InvalidArgumentException(sprintf('Redis connection failed (%s): %s', $e->getMessage(), $dsn));
                 }

From f19c035aaa0a97f6e3d8e9358563cc8ec2f5d217 Mon Sep 17 00:00:00 2001
From: Emanuele Panzeri <emanuele.panzeri@liip.ch>
Date: Sat, 8 Dec 2018 16:10:13 +0100
Subject: [PATCH 088/103] [Messenger] fixed RabbitMQ arguments not passed as
 integer values

---
 .../Transport/AmqpExt/ConnectionTest.php      | 50 +++++++++++++++++--
 .../Transport/AmqpExt/Connection.php          | 31 +++++++++++-
 2 files changed, 77 insertions(+), 4 deletions(-)

diff --git a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/ConnectionTest.php b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/ConnectionTest.php
index cd0fc3999ecf..b7d1be445362 100644
--- a/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/ConnectionTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Transport/AmqpExt/ConnectionTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Messenger\Tests\Transport\AmqpExt;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\Messenger\Exception\InvalidArgumentException;
 use Symfony\Component\Messenger\Transport\AmqpExt\AmqpFactory;
 use Symfony\Component\Messenger\Transport\AmqpExt\Connection;
 
@@ -96,17 +97,30 @@ public function testSetsParametersOnTheQueueAndExchange()
 
         $amqpQueue->expects($this->once())->method('setArguments')->with([
             'x-dead-letter-exchange' => 'dead-exchange',
-            'x-message-ttl' => '1200',
+            'x-delay' => 100,
+            'x-expires' => 150,
+            'x-max-length' => 200,
+            'x-max-length-bytes' => 300,
+            'x-max-priority' => 4,
+            'x-message-ttl' => 100,
         ]);
 
         $amqpExchange->expects($this->once())->method('setArguments')->with([
             'alternate-exchange' => 'alternate',
         ]);
 
-        $connection = Connection::fromDsn('amqp://localhost/%2f/messages?queue[arguments][x-dead-letter-exchange]=dead-exchange', [
+        $dsn = 'amqp://localhost/%2f/messages?'.
+            'queue[arguments][x-dead-letter-exchange]=dead-exchange&'.
+            'queue[arguments][x-message-ttl]=100&'.
+            'queue[arguments][x-delay]=100&'.
+            'queue[arguments][x-expires]=150&'
+        ;
+        $connection = Connection::fromDsn($dsn, [
             'queue' => [
                 'arguments' => [
-                    'x-message-ttl' => '1200',
+                    'x-max-length' => '200',
+                    'x-max-length-bytes' => '300',
+                    'x-max-priority' => '4',
                 ],
             ],
             'exchange' => [
@@ -118,6 +132,36 @@ public function testSetsParametersOnTheQueueAndExchange()
         $connection->publish('body');
     }
 
+    public function invalidQueueArgumentsDataProvider(): iterable
+    {
+        $baseDsn = 'amqp://localhost/%2f/messages';
+        yield [$baseDsn.'?queue[arguments][x-delay]=not-a-number', []];
+        yield [$baseDsn.'?queue[arguments][x-expires]=not-a-number', []];
+        yield [$baseDsn.'?queue[arguments][x-max-length]=not-a-number', []];
+        yield [$baseDsn.'?queue[arguments][x-max-length-bytes]=not-a-number', []];
+        yield [$baseDsn.'?queue[arguments][x-max-priority]=not-a-number', []];
+        yield [$baseDsn.'?queue[arguments][x-message-ttl]=not-a-number', []];
+
+        // Ensure the exception is thrown when the arguments are passed via the array options
+        yield [$baseDsn, ['queue' => ['arguments' => ['x-delay' => 'not-a-number']]]];
+        yield [$baseDsn, ['queue' => ['arguments' => ['x-expires' => 'not-a-number']]]];
+        yield [$baseDsn, ['queue' => ['arguments' => ['x-max-length' => 'not-a-number']]]];
+        yield [$baseDsn, ['queue' => ['arguments' => ['x-max-length-bytes' => 'not-a-number']]]];
+        yield [$baseDsn, ['queue' => ['arguments' => ['x-max-priority' => 'not-a-number']]]];
+        yield [$baseDsn, ['queue' => ['arguments' => ['x-message-ttl' => 'not-a-number']]]];
+    }
+
+    /**
+     * @dataProvider invalidQueueArgumentsDataProvider
+     */
+    public function testFromDsnWithInvalidValueOnQueueArguments(string $dsn, array $options)
+    {
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('Integer expected for queue argument');
+
+        Connection::fromDsn($dsn, $options);
+    }
+
     public function testItUsesANormalConnectionByDefault()
     {
         $factory = new TestAmqpFactory(
diff --git a/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php b/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
index 2f09d727c911..cffc49df29c7 100644
--- a/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
+++ b/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
@@ -24,6 +24,15 @@
  */
 class Connection
 {
+    private const ARGUMENTS_AS_INTEGER = [
+        'x-delay',
+        'x-expires',
+        'x-max-length',
+        'x-max-length-bytes',
+        'x-max-priority',
+        'x-message-ttl',
+    ];
+
     private $connectionCredentials;
     private $exchangeConfiguration;
     private $queueConfiguration;
@@ -89,12 +98,32 @@ public static function fromDsn(string $dsn, array $options = [], bool $debug = f
 
         $exchangeOptions = $amqpOptions['exchange'];
         $queueOptions = $amqpOptions['queue'];
-
         unset($amqpOptions['queue'], $amqpOptions['exchange']);
 
+        if (\is_array($queueOptions['arguments'] ?? false)) {
+            $queueOptions['arguments'] = self::normalizeQueueArguments($queueOptions['arguments']);
+        }
+
         return new self($amqpOptions, $exchangeOptions, $queueOptions, $debug, $amqpFactory);
     }
 
+    private static function normalizeQueueArguments(array $arguments): array
+    {
+        foreach (self::ARGUMENTS_AS_INTEGER as $key) {
+            if (!array_key_exists($key, $arguments)) {
+                continue;
+            }
+
+            if (!\is_numeric($arguments[$key])) {
+                throw new InvalidArgumentException(sprintf('Integer expected for queue argument "%s", %s given.', $key, \gettype($arguments[$key])));
+            }
+
+            $arguments[$key] = (int) $arguments[$key];
+        }
+
+        return $arguments;
+    }
+
     /**
      * @throws \AMQPException
      */

From 695d84be4cccbd46bbe27a69b33b5bd18ba5d23f Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 29 Jan 2019 16:40:56 +0100
Subject: [PATCH 089/103] [Config] fix compat with wrapping autoloaders

---
 .../Component/Config/Resource/ClassExistenceResource.php      | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Config/Resource/ClassExistenceResource.php b/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
index 9f904a881e07..a692981e19f2 100644
--- a/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
+++ b/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
@@ -118,8 +118,10 @@ public function unserialize($serialized)
 
     /**
      * @throws \ReflectionException When $class is not found and is required
+     *
+     * @internal
      */
-    private static function throwOnRequiredClass($class)
+    public static function throwOnRequiredClass($class)
     {
         if (self::$autoloadedClass === $class) {
             return;

From 73070d7d3233253081645f137086d4fa601b58aa Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 29 Jan 2019 17:19:17 +0100
Subject: [PATCH 090/103] [VarDumper] dont implement Serializable in Stub

---
 src/Symfony/Component/VarDumper/Cloner/Stub.php | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/Symfony/Component/VarDumper/Cloner/Stub.php b/src/Symfony/Component/VarDumper/Cloner/Stub.php
index 09e2c76467f7..08fba759301c 100644
--- a/src/Symfony/Component/VarDumper/Cloner/Stub.php
+++ b/src/Symfony/Component/VarDumper/Cloner/Stub.php
@@ -16,7 +16,7 @@
  *
  * @author Nicolas Grekas <p@tchwork.com>
  */
-class Stub implements \Serializable
+class Stub
 {
     const TYPE_REF = 1;
     const TYPE_STRING = 2;
@@ -42,16 +42,19 @@ class Stub implements \Serializable
     /**
      * @internal
      */
-    public function serialize()
+    public function __sleep()
     {
-        return \serialize([$this->class, $this->position, $this->cut, $this->type, $this->value, $this->handle, $this->refCount, $this->attr]);
+        $this->serialized = [$this->class, $this->position, $this->cut, $this->type, $this->value, $this->handle, $this->refCount, $this->attr];
+
+        return ['serialized'];
     }
 
     /**
      * @internal
      */
-    public function unserialize($serialized)
+    public function __wakeup()
     {
-        list($this->class, $this->position, $this->cut, $this->type, $this->value, $this->handle, $this->refCount, $this->attr) = \unserialize($serialized);
+        list($this->class, $this->position, $this->cut, $this->type, $this->value, $this->handle, $this->refCount, $this->attr) = $this->serialized;
+        unset($this->serialized);
     }
 }

From ec0c37192be6db917ec05c50b6e7b88b6f6500e8 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Tue, 29 Jan 2019 19:24:09 +0100
Subject: [PATCH 091/103] [Form] fix some docblocks and type checks

---
 src/Symfony/Component/Form/AbstractType.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Form/AbstractType.php b/src/Symfony/Component/Form/AbstractType.php
index 3509db5d94a9..1a9cfd75be7f 100644
--- a/src/Symfony/Component/Form/AbstractType.php
+++ b/src/Symfony/Component/Form/AbstractType.php
@@ -52,7 +52,7 @@ public function configureOptions(OptionsResolver $resolver)
      */
     public function getBlockPrefix()
     {
-        return StringUtil::fqcnToBlockPrefix(\get_class($this));
+        return StringUtil::fqcnToBlockPrefix(\get_class($this)) ?: '';
     }
 
     /**

From 9d3180a7e23cedc63fbf269c1227ce9bbe3e3005 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Wed, 30 Jan 2019 09:41:20 +0100
Subject: [PATCH 092/103] [Config] ensure moving away from Serializable wont
 break cache:clear

---
 src/Symfony/Component/Config/ResourceCheckerConfigCache.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Config/ResourceCheckerConfigCache.php b/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
index 933cf0f9c7b8..092b95bf0188 100644
--- a/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
+++ b/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
@@ -156,10 +156,11 @@ private function safelyUnserialize($file)
     {
         $e = null;
         $meta = false;
+        $content = file_get_contents($file);
         $signalingException = new \UnexpectedValueException();
         $prevUnserializeHandler = ini_set('unserialize_callback_func', '');
         $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$prevErrorHandler, $signalingException) {
-            if (E_WARNING === $type && 'Class __PHP_Incomplete_Class has no unserializer' === $msg) {
+            if (__FILE__ === $file) {
                 throw $signalingException;
             }
 
@@ -167,7 +168,7 @@ private function safelyUnserialize($file)
         });
 
         try {
-            $meta = unserialize(file_get_contents($file));
+            $meta = unserialize($content);
         } catch (\Error $e) {
         } catch (\Exception $e) {
         }

From 7b9d73d891cee0349c9a14cb824ea16e0346120a Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Wed, 30 Jan 2019 10:03:33 +0100
Subject: [PATCH 093/103] Mark some/most implementations of Serializable as
 `@internal`

---
 .../Component/Config/Resource/ClassExistenceResource.php  | 4 ++--
 .../Component/Config/Resource/ComposerResource.php        | 6 ++++++
 .../Component/Config/Resource/DirectoryResource.php       | 6 ++++++
 .../Component/Config/Resource/FileExistenceResource.php   | 4 ++--
 src/Symfony/Component/Config/Resource/FileResource.php    | 6 ++++++
 src/Symfony/Component/Config/Resource/GlobResource.php    | 6 ++++++
 .../Component/Config/Resource/ReflectionClassResource.php | 6 ++++++
 .../Config/AutowireServiceResource.php                    | 6 ++++++
 .../Config/ContainerParametersResource.php                | 4 ++--
 src/Symfony/Component/Form/FormError.php                  | 8 ++------
 .../Component/HttpKernel/Config/EnvParametersResource.php | 6 ++++++
 .../Component/HttpKernel/DataCollector/DataCollector.php  | 6 ++++++
 .../Component/HttpKernel/Debug/FileLinkFormatter.php      | 6 ++++++
 src/Symfony/Component/Validator/Constraint.php            | 4 +---
 14 files changed, 63 insertions(+), 15 deletions(-)

diff --git a/src/Symfony/Component/Config/Resource/ClassExistenceResource.php b/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
index 9f904a881e07..273f262f169d 100644
--- a/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
+++ b/src/Symfony/Component/Config/Resource/ClassExistenceResource.php
@@ -97,7 +97,7 @@ public function isFresh($timestamp)
     }
 
     /**
-     * {@inheritdoc}
+     * @internal
      */
     public function serialize()
     {
@@ -109,7 +109,7 @@ public function serialize()
     }
 
     /**
-     * {@inheritdoc}
+     * @internal
      */
     public function unserialize($serialized)
     {
diff --git a/src/Symfony/Component/Config/Resource/ComposerResource.php b/src/Symfony/Component/Config/Resource/ComposerResource.php
index 85ac555295c8..c826d1bb7512 100644
--- a/src/Symfony/Component/Config/Resource/ComposerResource.php
+++ b/src/Symfony/Component/Config/Resource/ComposerResource.php
@@ -51,11 +51,17 @@ public function isFresh($timestamp)
         return self::$runtimeVendors === $this->vendors;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         return serialize($this->vendors);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($serialized)
     {
         $this->vendors = unserialize($serialized);
diff --git a/src/Symfony/Component/Config/Resource/DirectoryResource.php b/src/Symfony/Component/Config/Resource/DirectoryResource.php
index 7b314dd9b01f..e79b19ec2d7a 100644
--- a/src/Symfony/Component/Config/Resource/DirectoryResource.php
+++ b/src/Symfony/Component/Config/Resource/DirectoryResource.php
@@ -104,11 +104,17 @@ public function isFresh($timestamp)
         return true;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         return serialize([$this->resource, $this->pattern]);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($serialized)
     {
         list($this->resource, $this->pattern) = unserialize($serialized);
diff --git a/src/Symfony/Component/Config/Resource/FileExistenceResource.php b/src/Symfony/Component/Config/Resource/FileExistenceResource.php
index cbdf1b0c5ae0..34047651b702 100644
--- a/src/Symfony/Component/Config/Resource/FileExistenceResource.php
+++ b/src/Symfony/Component/Config/Resource/FileExistenceResource.php
@@ -59,7 +59,7 @@ public function isFresh($timestamp)
     }
 
     /**
-     * {@inheritdoc}
+     * @internal
      */
     public function serialize()
     {
@@ -67,7 +67,7 @@ public function serialize()
     }
 
     /**
-     * {@inheritdoc}
+     * @internal
      */
     public function unserialize($serialized)
     {
diff --git a/src/Symfony/Component/Config/Resource/FileResource.php b/src/Symfony/Component/Config/Resource/FileResource.php
index 1d373a623acf..bee062377b6b 100644
--- a/src/Symfony/Component/Config/Resource/FileResource.php
+++ b/src/Symfony/Component/Config/Resource/FileResource.php
@@ -63,11 +63,17 @@ public function isFresh($timestamp)
         return false !== ($filemtime = @filemtime($this->resource)) && $filemtime <= $timestamp;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         return serialize($this->resource);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($serialized)
     {
         $this->resource = unserialize($serialized);
diff --git a/src/Symfony/Component/Config/Resource/GlobResource.php b/src/Symfony/Component/Config/Resource/GlobResource.php
index 20648b585e50..28ba0a6112bd 100644
--- a/src/Symfony/Component/Config/Resource/GlobResource.php
+++ b/src/Symfony/Component/Config/Resource/GlobResource.php
@@ -73,6 +73,9 @@ public function isFresh($timestamp)
         return $this->hash === $hash;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         if (null === $this->hash) {
@@ -82,6 +85,9 @@ public function serialize()
         return serialize([$this->prefix, $this->pattern, $this->recursive, $this->hash]);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($serialized)
     {
         list($this->prefix, $this->pattern, $this->recursive, $this->hash) = unserialize($serialized);
diff --git a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
index 52f1ec53cd7d..a86a37ed8dcb 100644
--- a/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
+++ b/src/Symfony/Component/Config/Resource/ReflectionClassResource.php
@@ -57,6 +57,9 @@ public function __toString()
         return 'reflection.'.$this->className;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         if (null === $this->hash) {
@@ -67,6 +70,9 @@ public function serialize()
         return serialize([$this->files, $this->className, $this->hash]);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($serialized)
     {
         list($this->files, $this->className, $this->hash) = unserialize($serialized);
diff --git a/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php b/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
index 6bb9bb0d1ecc..0c3d8f5758e4 100644
--- a/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
+++ b/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
@@ -58,11 +58,17 @@ public function __toString()
         return 'service.autowire.'.$this->class;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         return serialize([$this->class, $this->filePath, $this->autowiringMetadata]);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($serialized)
     {
         if (\PHP_VERSION_ID >= 70000) {
diff --git a/src/Symfony/Component/DependencyInjection/Config/ContainerParametersResource.php b/src/Symfony/Component/DependencyInjection/Config/ContainerParametersResource.php
index 072f0580aada..7560c3356d97 100644
--- a/src/Symfony/Component/DependencyInjection/Config/ContainerParametersResource.php
+++ b/src/Symfony/Component/DependencyInjection/Config/ContainerParametersResource.php
@@ -39,7 +39,7 @@ public function __toString()
     }
 
     /**
-     * {@inheritdoc}
+     * @internal
      */
     public function serialize()
     {
@@ -47,7 +47,7 @@ public function serialize()
     }
 
     /**
-     * {@inheritdoc}
+     * @internal
      */
     public function unserialize($serialized)
     {
diff --git a/src/Symfony/Component/Form/FormError.php b/src/Symfony/Component/Form/FormError.php
index ce5b682402bd..7717c19019a3 100644
--- a/src/Symfony/Component/Form/FormError.php
+++ b/src/Symfony/Component/Form/FormError.php
@@ -135,9 +135,7 @@ public function getOrigin()
     }
 
     /**
-     * Serializes this error.
-     *
-     * @return string The serialized error
+     * @internal
      */
     public function serialize()
     {
@@ -151,9 +149,7 @@ public function serialize()
     }
 
     /**
-     * Unserializes a serialized error.
-     *
-     * @param string $serialized The serialized error
+     * @internal
      */
     public function unserialize($serialized)
     {
diff --git a/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php b/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
index a5be98ee81b8..26869ced2fc7 100644
--- a/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
+++ b/src/Symfony/Component/HttpKernel/Config/EnvParametersResource.php
@@ -65,11 +65,17 @@ public function isFresh($timestamp)
         return $this->findVariables() === $this->variables;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         return serialize(['prefix' => $this->prefix, 'variables' => $this->variables]);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($serialized)
     {
         if (\PHP_VERSION_ID >= 70000) {
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
index 4346e0ec0f8e..4a257ff5f8ee 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
@@ -40,6 +40,9 @@ abstract class DataCollector implements DataCollectorInterface, \Serializable
      */
     private $cloner;
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         $trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2);
@@ -48,6 +51,9 @@ public function serialize()
         return $isCalledFromOverridingMethod ? $this->data : serialize($this->data);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($data)
     {
         $this->data = \is_array($data) ? $data : unserialize($data);
diff --git a/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php b/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
index 8a4aa62b746d..af65f7ec5725 100644
--- a/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
+++ b/src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php
@@ -61,11 +61,17 @@ public function format($file, $line)
         return false;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         return serialize($this->getFileLinkFormat());
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($serialized)
     {
         if (\PHP_VERSION_ID >= 70000) {
diff --git a/src/Symfony/Component/Validator/Constraint.php b/src/Symfony/Component/Validator/Constraint.php
index 4b7e6bc083a6..ae27ba21635e 100644
--- a/src/Symfony/Component/Validator/Constraint.php
+++ b/src/Symfony/Component/Validator/Constraint.php
@@ -284,9 +284,7 @@ public function getTargets()
      *
      * @return array The properties to serialize
      *
-     * @internal This method may be replaced by an implementation of
-     *           {@link \Serializable} in the future. Please don't use or
-     *           overwrite it.
+     * @internal
      */
     public function __sleep()
     {

From b47408179f7729f494aee471f7cbdf33e35007b8 Mon Sep 17 00:00:00 2001
From: Javier Eguiluz <javier.eguiluz@gmail.com>
Date: Wed, 30 Jan 2019 11:27:26 +0100
Subject: [PATCH 094/103] Disable Twig in the profiler menu when Twig is not
 used

---
 .../WebProfilerBundle/Resources/views/Collector/twig.html.twig  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/twig.html.twig b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/twig.html.twig
index dbf3825ee60f..b473b6209922 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/twig.html.twig
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/twig.html.twig
@@ -31,7 +31,7 @@
 {% endblock %}
 
 {% block menu %}
-    <span class="label">
+    <span class="label {{ 0 == collector.templateCount ? 'disabled' }}">
         <span class="icon">{{ include('@WebProfiler/Icon/twig.svg') }}</span>
         <strong>Twig</strong>
     </span>

From 823a95d81ed8029ccd087c73716a9990b35d2cf0 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Wed, 30 Jan 2019 12:43:38 +0100
Subject: [PATCH 095/103] Add missing `@internal` annotations

---
 .../Form/Extension/DataCollector/FormDataCollector.php    | 3 +++
 .../HttpKernel/DataCollector/DumpDataCollector.php        | 8 +++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php b/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
index 88fa453a6258..e7b485d39f8f 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
@@ -228,6 +228,9 @@ public function getData()
         return $this->data;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         if ($this->hasVarDumper) {
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
index 27197226dead..e25e4fb37d71 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
@@ -176,6 +176,9 @@ public function reset()
         $this->clonesIndex = 0;
     }
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
         if ($this->clonesCount !== $this->clonesIndex) {
@@ -195,9 +198,12 @@ public function serialize()
         return $ser;
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($data)
     {
-        parent::unserialize($data);
+        $this->data = unserialize($data);
         $charset = array_pop($this->data);
         $fileLinkFormat = array_pop($this->data);
         $this->dataCount = \count($this->data);

From 8b330de7f794504864f6f92377f99e6b299382c3 Mon Sep 17 00:00:00 2001
From: "Alexander M. Turek" <me@derrabus.de>
Date: Wed, 30 Jan 2019 14:15:47 +0100
Subject: [PATCH 096/103] PHPUnit Bridge: Rollback to traditional array syntax.

---
 src/Symfony/Bridge/PhpUnit/ClockMock.php      |  2 +-
 .../PhpUnit/DeprecationErrorHandler.php       | 28 +++---
 src/Symfony/Bridge/PhpUnit/DnsMock.php        | 16 +--
 .../PhpUnit/Legacy/CoverageListenerTrait.php  | 14 +--
 .../Legacy/SymfonyTestsListenerForV5.php      |  2 +-
 .../Legacy/SymfonyTestsListenerForV6.php      |  2 +-
 .../Legacy/SymfonyTestsListenerForV7.php      |  2 +-
 .../Legacy/SymfonyTestsListenerTrait.php      | 36 +++----
 .../Bridge/PhpUnit/Legacy/TestRunnerForV5.php |  2 +-
 .../Bridge/PhpUnit/Legacy/TestRunnerForV6.php |  2 +-
 .../Bridge/PhpUnit/Legacy/TestRunnerForV7.php |  2 +-
 .../DeprecationErrorHandler/default.phpt      |  2 +-
 .../shutdown_deprecations.phpt                |  2 +-
 .../Bridge/PhpUnit/Tests/DnsMockTest.php      | 98 +++++++++----------
 src/Symfony/Bridge/PhpUnit/bin/simple-phpunit | 18 ++--
 15 files changed, 114 insertions(+), 114 deletions(-)

diff --git a/src/Symfony/Bridge/PhpUnit/ClockMock.php b/src/Symfony/Bridge/PhpUnit/ClockMock.php
index a29edd907886..4c5432f2603c 100644
--- a/src/Symfony/Bridge/PhpUnit/ClockMock.php
+++ b/src/Symfony/Bridge/PhpUnit/ClockMock.php
@@ -73,7 +73,7 @@ public static function register($class)
     {
         $self = \get_called_class();
 
-        $mockedNs = [substr($class, 0, strrpos($class, '\\'))];
+        $mockedNs = array(substr($class, 0, strrpos($class, '\\')));
         if (0 < strpos($class, '\\Tests\\')) {
             $ns = str_replace('\\Tests\\', '\\', $class);
             $mockedNs[] = substr($ns, 0, strrpos($ns, '\\'));
diff --git a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
index 2f275a109777..3b444d5d95b2 100644
--- a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
+++ b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
@@ -92,19 +92,19 @@ public static function register($mode = 0)
             return false;
         };
 
-        $deprecations = [
+        $deprecations = array(
             'unsilencedCount' => 0,
             'remainingCount' => 0,
             'legacyCount' => 0,
             'otherCount' => 0,
             'remaining vendorCount' => 0,
-            'unsilenced' => [],
-            'remaining' => [],
-            'legacy' => [],
-            'other' => [],
-            'remaining vendor' => [],
-        ];
-        $deprecationHandler = function ($type, $msg, $file, $line, $context = []) use (&$deprecations, $getMode, $UtilPrefix, $inVendors) {
+            'unsilenced' => array(),
+            'remaining' => array(),
+            'legacy' => array(),
+            'other' => array(),
+            'remaining vendor' => array(),
+        );
+        $deprecationHandler = function ($type, $msg, $file, $line, $context = array()) use (&$deprecations, $getMode, $UtilPrefix, $inVendors) {
             $mode = $getMode();
             if ((E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) || self::MODE_DISABLED === $mode) {
                 $ErrorHandler = $UtilPrefix.'ErrorHandler';
@@ -184,7 +184,7 @@ public static function register($mode = 0)
 
         if (null !== $oldErrorHandler) {
             restore_error_handler();
-            if ([$UtilPrefix.'ErrorHandler', 'handleError'] === $oldErrorHandler) {
+            if (array($UtilPrefix.'ErrorHandler', 'handleError') === $oldErrorHandler) {
                 restore_error_handler();
                 self::register($mode);
             }
@@ -218,7 +218,7 @@ public static function register($mode = 0)
                     return $b['count'] - $a['count'];
                 };
 
-                $groups = ['unsilenced', 'remaining'];
+                $groups = array('unsilenced', 'remaining');
                 if (self::MODE_WEAK_VENDORS === $mode) {
                     $groups[] = 'remaining vendor';
                 }
@@ -259,7 +259,7 @@ public static function register($mode = 0)
 
                 // reset deprecations array
                 foreach ($deprecations as $group => $arrayOrInt) {
-                    $deprecations[$group] = \is_int($arrayOrInt) ? 0 : [];
+                    $deprecations[$group] = \is_int($arrayOrInt) ? 0 : array();
                 }
 
                 register_shutdown_function(function () use (&$deprecations, $isFailing, $displayDeprecations, $mode) {
@@ -280,8 +280,8 @@ public static function register($mode = 0)
 
     public static function collectDeprecations($outputFile)
     {
-        $deprecations = [];
-        $previousErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$deprecations, &$previousErrorHandler) {
+        $deprecations = array();
+        $previousErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) use (&$deprecations, &$previousErrorHandler) {
             if (E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) {
                 if ($previousErrorHandler) {
                     return $previousErrorHandler($type, $msg, $file, $line, $context);
@@ -293,7 +293,7 @@ public static function collectDeprecations($outputFile)
 
                 return $ErrorHandler::handleError($type, $msg, $file, $line, $context);
             }
-            $deprecations[] = [error_reporting(), $msg, $file];
+            $deprecations[] = array(error_reporting(), $msg, $file);
         });
 
         register_shutdown_function(function () use ($outputFile, &$deprecations) {
diff --git a/src/Symfony/Bridge/PhpUnit/DnsMock.php b/src/Symfony/Bridge/PhpUnit/DnsMock.php
index a58bf2efcde3..790cfa91af5c 100644
--- a/src/Symfony/Bridge/PhpUnit/DnsMock.php
+++ b/src/Symfony/Bridge/PhpUnit/DnsMock.php
@@ -16,8 +16,8 @@
  */
 class DnsMock
 {
-    private static $hosts = [];
-    private static $dnsTypes = [
+    private static $hosts = array();
+    private static $dnsTypes = array(
         'A' => DNS_A,
         'MX' => DNS_MX,
         'NS' => DNS_NS,
@@ -30,7 +30,7 @@ class DnsMock
         'NAPTR' => DNS_NAPTR,
         'TXT' => DNS_TXT,
         'HINFO' => DNS_HINFO,
-    ];
+    );
 
     /**
      * Configures the mock values for DNS queries.
@@ -68,7 +68,7 @@ public static function getmxrr($hostname, &$mxhosts, &$weight = null)
         if (!self::$hosts) {
             return \getmxrr($hostname, $mxhosts, $weight);
         }
-        $mxhosts = $weight = [];
+        $mxhosts = $weight = array();
 
         if (isset(self::$hosts[$hostname])) {
             foreach (self::$hosts[$hostname] as $record) {
@@ -125,7 +125,7 @@ public static function gethostbynamel($hostname)
         $ips = false;
 
         if (isset(self::$hosts[$hostname])) {
-            $ips = [];
+            $ips = array();
 
             foreach (self::$hosts[$hostname] as $record) {
                 if ('A' === $record['type']) {
@@ -149,11 +149,11 @@ public static function dns_get_record($hostname, $type = DNS_ANY, &$authns = nul
             if (DNS_ANY === $type) {
                 $type = DNS_ALL;
             }
-            $records = [];
+            $records = array();
 
             foreach (self::$hosts[$hostname] as $record) {
                 if (isset(self::$dnsTypes[$record['type']]) && (self::$dnsTypes[$record['type']] & $type)) {
-                    $records[] = array_merge(['host' => $hostname, 'class' => 'IN', 'ttl' => 1, 'type' => $record['type']], $record);
+                    $records[] = array_merge(array('host' => $hostname, 'class' => 'IN', 'ttl' => 1, 'type' => $record['type']), $record);
                 }
             }
         }
@@ -165,7 +165,7 @@ public static function register($class)
     {
         $self = \get_called_class();
 
-        $mockedNs = [substr($class, 0, strrpos($class, '\\'))];
+        $mockedNs = array(substr($class, 0, strrpos($class, '\\')));
         if (0 < strpos($class, '\\Tests\\')) {
             $ns = str_replace('\\Tests\\', '\\', $class);
             $mockedNs[] = substr($ns, 0, strrpos($ns, '\\'));
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
index 07a9679d13c1..8e9bdbe92ed4 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
@@ -31,7 +31,7 @@ public function __construct(callable $sutFqcnResolver = null, $warningOnSutNotFo
     {
         $this->sutFqcnResolver = $sutFqcnResolver;
         $this->warningOnSutNotFound = $warningOnSutNotFound;
-        $this->warnings = [];
+        $this->warnings = array();
     }
 
     public function startTest($test)
@@ -42,7 +42,7 @@ public function startTest($test)
 
         $annotations = $test->getAnnotations();
 
-        $ignoredAnnotations = ['covers', 'coversDefaultClass', 'coversNothing'];
+        $ignoredAnnotations = array('covers', 'coversDefaultClass', 'coversNothing');
 
         foreach ($ignoredAnnotations as $annotation) {
             if (isset($annotations['class'][$annotation]) || isset($annotations['method'][$annotation])) {
@@ -74,11 +74,11 @@ public function startTest($test)
         $r->setAccessible(true);
 
         $cache = $r->getValue();
-        $cache = array_replace_recursive($cache, [
-            \get_class($test) => [
-                'covers' => [$sutFqcn],
-            ],
-        ]);
+        $cache = array_replace_recursive($cache, array(
+            \get_class($test) => array(
+                'covers' => array($sutFqcn),
+            ),
+        ));
         $r->setValue($testClass, $cache);
     }
 
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
index c825a8ddb2f3..2da40f2c204f 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV5.php
@@ -22,7 +22,7 @@ class SymfonyTestsListenerForV5 extends \PHPUnit_Framework_BaseTestListener
 {
     private $trait;
 
-    public function __construct(array $mockedNamespaces = [])
+    public function __construct(array $mockedNamespaces = array())
     {
         $this->trait = new SymfonyTestsListenerTrait($mockedNamespaces);
     }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php
index 0c0b57080e01..5b864bfe58a3 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV6.php
@@ -27,7 +27,7 @@ class SymfonyTestsListenerForV6 extends BaseTestListener
 {
     private $trait;
 
-    public function __construct(array $mockedNamespaces = [])
+    public function __construct(array $mockedNamespaces = array())
     {
         $this->trait = new SymfonyTestsListenerTrait($mockedNamespaces);
     }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php
index 25ad718a8041..18bbdbeba0f0 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerForV7.php
@@ -30,7 +30,7 @@ class SymfonyTestsListenerForV7 implements TestListener
 
     private $trait;
 
-    public function __construct(array $mockedNamespaces = [])
+    public function __construct(array $mockedNamespaces = array())
     {
         $this->trait = new SymfonyTestsListenerTrait($mockedNamespaces);
     }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
index 140434428a31..6333c4fd763a 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
@@ -31,10 +31,10 @@ class SymfonyTestsListenerTrait
     private static $globallyEnabled = false;
     private $state = -1;
     private $skippedFile = false;
-    private $wasSkipped = [];
-    private $isSkipped = [];
-    private $expectedDeprecations = [];
-    private $gatheredDeprecations = [];
+    private $wasSkipped = array();
+    private $isSkipped = array();
+    private $expectedDeprecations = array();
+    private $gatheredDeprecations = array();
     private $previousErrorHandler;
     private $testsWithWarnings;
     private $reportUselessTests;
@@ -44,7 +44,7 @@ class SymfonyTestsListenerTrait
     /**
      * @param array $mockedNamespaces List of namespaces, indexed by mocked features (time-sensitive or dns-sensitive)
      */
-    public function __construct(array $mockedNamespaces = [])
+    public function __construct(array $mockedNamespaces = array())
     {
         if (class_exists('PHPUnit_Util_Blacklist')) {
             \PHPUnit_Util_Blacklist::$blacklistedClassNames['\Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerTrait'] = 2;
@@ -55,7 +55,7 @@ public function __construct(array $mockedNamespaces = [])
         $warn = false;
         foreach ($mockedNamespaces as $type => $namespaces) {
             if (!\is_array($namespaces)) {
-                $namespaces = [$namespaces];
+                $namespaces = array($namespaces);
             }
             if (\is_int($type)) {
                 // @deprecated BC with v2.8 to v3.0
@@ -104,7 +104,7 @@ public function startTestSuite($suite)
             $Test = 'PHPUnit\Util\Test';
         }
         $suiteName = $suite->getName();
-        $this->testsWithWarnings = [];
+        $this->testsWithWarnings = array();
 
         foreach ($suite->tests() as $test) {
             if (!($test instanceof \PHPUnit\Framework\TestCase || $test instanceof TestCase)) {
@@ -135,11 +135,11 @@ public function startTestSuite($suite)
 
                     if (!$this->wasSkipped = require $this->skippedFile) {
                         echo "All tests already ran successfully.\n";
-                        $suite->setTests([]);
+                        $suite->setTests(array());
                     }
                 }
             }
-            $testSuites = [$suite];
+            $testSuites = array($suite);
             for ($i = 0; isset($testSuites[$i]); ++$i) {
                 foreach ($testSuites[$i]->tests() as $test) {
                     if ($test instanceof \PHPUnit_Framework_TestSuite || $test instanceof TestSuite) {
@@ -158,7 +158,7 @@ public function startTestSuite($suite)
                 }
             }
         } elseif (2 === $this->state) {
-            $skipped = [];
+            $skipped = array();
             foreach ($suite->tests() as $test) {
                 if (!($test instanceof \PHPUnit\Framework\TestCase || $test instanceof TestCase)
                     || isset($this->wasSkipped[$suiteName]['*'])
@@ -230,7 +230,7 @@ public function startTest($test)
                 $test->getTestResultObject()->beStrictAboutTestsThatDoNotTestAnything(false);
 
                 $this->expectedDeprecations = $annotations['method']['expectedDeprecation'];
-                $this->previousErrorHandler = set_error_handler([$this, 'handleError']);
+                $this->previousErrorHandler = set_error_handler(array($this, 'handleError'));
             }
         }
     }
@@ -271,8 +271,8 @@ public function endTest($test, $time)
             $deprecations = file_get_contents($this->runsInSeparateProcess);
             unlink($this->runsInSeparateProcess);
             putenv('SYMFONY_DEPRECATIONS_SERIALIZE');
-            foreach ($deprecations ? unserialize($deprecations) : [] as $deprecation) {
-                $error = serialize(['deprecation' => $deprecation[1], 'class' => $className, 'method' => $test->getName(false), 'triggering_file' => isset($deprecation[2]) ? $deprecation[2] : null]);
+            foreach ($deprecations ? unserialize($deprecations) : array() as $deprecation) {
+                $error = serialize(array('deprecation' => $deprecation[1], 'class' => $className, 'method' => $test->getName(false), 'triggering_file' => isset($deprecation[2]) ? $deprecation[2] : null));
                 if ($deprecation[0]) {
                     @trigger_error($error, E_USER_DEPRECATED);
                 } else {
@@ -283,13 +283,13 @@ public function endTest($test, $time)
         }
 
         if ($this->expectedDeprecations) {
-            if (!\in_array($test->getStatus(), [$BaseTestRunner::STATUS_SKIPPED, $BaseTestRunner::STATUS_INCOMPLETE], true)) {
+            if (!\in_array($test->getStatus(), array($BaseTestRunner::STATUS_SKIPPED, $BaseTestRunner::STATUS_INCOMPLETE), true)) {
                 $test->addToAssertionCount(\count($this->expectedDeprecations));
             }
 
             restore_error_handler();
 
-            if (!$errored && !\in_array($test->getStatus(), [$BaseTestRunner::STATUS_SKIPPED, $BaseTestRunner::STATUS_INCOMPLETE, $BaseTestRunner::STATUS_FAILURE, $BaseTestRunner::STATUS_ERROR], true)) {
+            if (!$errored && !\in_array($test->getStatus(), array($BaseTestRunner::STATUS_SKIPPED, $BaseTestRunner::STATUS_INCOMPLETE, $BaseTestRunner::STATUS_FAILURE, $BaseTestRunner::STATUS_ERROR), true)) {
                 try {
                     $prefix = "@expectedDeprecation:\n";
                     $test->assertStringMatchesFormat($prefix.'%A  '.implode("\n%A  ", $this->expectedDeprecations)."\n%A", $prefix.'  '.implode("\n  ", $this->gatheredDeprecations)."\n");
@@ -300,7 +300,7 @@ public function endTest($test, $time)
                 }
             }
 
-            $this->expectedDeprecations = $this->gatheredDeprecations = [];
+            $this->expectedDeprecations = $this->gatheredDeprecations = array();
             $this->previousErrorHandler = null;
         }
         if (!$this->runsInSeparateProcess && -2 < $this->state && ($test instanceof \PHPUnit\Framework\TestCase || $test instanceof TestCase)) {
@@ -308,7 +308,7 @@ public function endTest($test, $time)
                 ClockMock::withClockMock(false);
             }
             if (\in_array('dns-sensitive', $groups, true)) {
-                DnsMock::withMockedHosts([]);
+                DnsMock::withMockedHosts(array());
             }
         }
 
@@ -329,7 +329,7 @@ public function endTest($test, $time)
         }
     }
 
-    public function handleError($type, $msg, $file, $line, $context = [])
+    public function handleError($type, $msg, $file, $line, $context = array())
     {
         if (E_USER_DEPRECATED !== $type && E_DEPRECATED !== $type) {
             $h = $this->previousErrorHandler;
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV5.php b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV5.php
index 1a89019fe306..7897861cf52f 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV5.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV5.php
@@ -27,7 +27,7 @@ protected function handleConfiguration(array &$arguments)
 
         $result = parent::handleConfiguration($arguments);
 
-        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : [];
+        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : array();
 
         $registeredLocally = false;
 
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV6.php b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV6.php
index 8489a58627fa..6da7c6544853 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV6.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV6.php
@@ -30,7 +30,7 @@ protected function handleConfiguration(array &$arguments)
 
         parent::handleConfiguration($arguments);
 
-        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : [];
+        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : array();
 
         $registeredLocally = false;
 
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV7.php b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV7.php
index bc5fff95ba71..a175fb65d7f5 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV7.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/TestRunnerForV7.php
@@ -30,7 +30,7 @@ protected function handleConfiguration(array &$arguments): void
 
         parent::handleConfiguration($arguments);
 
-        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : [];
+        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : array();
 
         $registeredLocally = false;
 
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
index 9bc155a7cdeb..e06e9bd869ac 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt
@@ -35,7 +35,7 @@ class PHPUnit_Util_Test
 {
     public static function getGroups()
     {
-        return [];
+        return array();
     }
 }
 
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
index 703db6fd19fa..1bb1551663e1 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/shutdown_deprecations.phpt
@@ -35,7 +35,7 @@ class PHPUnit_Util_Test
 {
     public static function getGroups()
     {
-        return [];
+        return array();
     }
 }
 
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DnsMockTest.php b/src/Symfony/Bridge/PhpUnit/Tests/DnsMockTest.php
index ebbc87a77067..a178ac7e898c 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DnsMockTest.php
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DnsMockTest.php
@@ -18,15 +18,15 @@ class DnsMockTest extends TestCase
 {
     protected function tearDown()
     {
-        DnsMock::withMockedHosts([]);
+        DnsMock::withMockedHosts(array());
     }
 
     public function testCheckdnsrr()
     {
-        DnsMock::withMockedHosts(['example.com' => [['type' => 'MX']]]);
+        DnsMock::withMockedHosts(array('example.com' => array(array('type' => 'MX'))));
         $this->assertTrue(DnsMock::checkdnsrr('example.com'));
 
-        DnsMock::withMockedHosts(['example.com' => [['type' => 'A']]]);
+        DnsMock::withMockedHosts(array('example.com' => array(array('type' => 'A'))));
         $this->assertFalse(DnsMock::checkdnsrr('example.com'));
         $this->assertTrue(DnsMock::checkdnsrr('example.com', 'a'));
         $this->assertTrue(DnsMock::checkdnsrr('example.com', 'any'));
@@ -35,34 +35,34 @@ public function testCheckdnsrr()
 
     public function testGetmxrr()
     {
-        DnsMock::withMockedHosts([
-            'example.com' => [[
+        DnsMock::withMockedHosts(array(
+            'example.com' => array(array(
                 'type' => 'MX',
                 'host' => 'mx.example.com',
                 'pri' => 10,
-            ]],
-        ]);
+            )),
+        ));
 
         $this->assertFalse(DnsMock::getmxrr('foobar.com', $mxhosts, $weight));
         $this->assertTrue(DnsMock::getmxrr('example.com', $mxhosts, $weight));
-        $this->assertSame(['mx.example.com'], $mxhosts);
-        $this->assertSame([10], $weight);
+        $this->assertSame(array('mx.example.com'), $mxhosts);
+        $this->assertSame(array(10), $weight);
     }
 
     public function testGethostbyaddr()
     {
-        DnsMock::withMockedHos
58F7
ts([
-            'example.com' => [
-                [
+        DnsMock::withMockedHosts(array(
+            'example.com' => array(
+                array(
                     'type' => 'A',
                     'ip' => '1.2.3.4',
-                ],
-                [
+                ),
+                array(
                     'type' => 'AAAA',
                     'ipv6' => '::12',
-                ],
-            ],
-        ]);
+                ),
+            ),
+        ));
 
         $this->assertSame('::21', DnsMock::gethostbyaddr('::21'));
         $this->assertSame('example.com', DnsMock::gethostbyaddr('::12'));
@@ -71,18 +71,18 @@ public function testGethostbyaddr()
 
     public function testGethostbyname()
     {
-        DnsMock::withMockedHosts([
-            'example.com' => [
-                [
+        DnsMock::withMockedHosts(array(
+            'example.com' => array(
+                array(
                     'type' => 'AAAA',
                     'ipv6' => '::12',
-                ],
-                [
+                ),
+                array(
                     'type' => 'A',
                     'ip' => '1.2.3.4',
-                ],
-            ],
-        ]);
+                ),
+            ),
+        ));
 
         $this->assertSame('foobar.com', DnsMock::gethostbyname('foobar.com'));
         $this->assertSame('1.2.3.4', DnsMock::gethostbyname('example.com'));
@@ -90,59 +90,59 @@ public function testGethostbyname()
 
     public function testGethostbynamel()
     {
-        DnsMock::withMockedHosts([
-            'example.com' => [
-                [
+        DnsMock::withMockedHosts(array(
+            'example.com' => array(
+                array(
                     'type' => 'A',
                     'ip' => '1.2.3.4',
-                ],
-                [
+                ),
+                array(
                     'type' => 'A',
                     'ip' => '2.3.4.5',
-                ],
-            ],
-        ]);
+                ),
+            ),
+        ));
 
         $this->assertFalse(DnsMock::gethostbynamel('foobar.com'));
-        $this->assertSame(['1.2.3.4', '2.3.4.5'], DnsMock::gethostbynamel('example.com'));
+        $this->assertSame(array('1.2.3.4', '2.3.4.5'), DnsMock::gethostbynamel('example.com'));
     }
 
     public function testDnsGetRecord()
     {
-        DnsMock::withMockedHosts([
-            'example.com' => [
-                [
+        DnsMock::withMockedHosts(array(
+            'example.com' => array(
+                array(
                     'type' => 'A',
                     'ip' => '1.2.3.4',
-                ],
-                [
+                ),
+                array(
                     'type' => 'PTR',
                     'ip' => '2.3.4.5',
-                ],
-            ],
-        ]);
+                ),
+            ),
+        ));
 
-        $records = [
-            [
+        $records = array(
+            array(
                 'host' => 'example.com',
                 'class' => 'IN',
                 'ttl' => 1,
                 'type' => 'A',
                 'ip' => '1.2.3.4',
-            ],
-            $ptr = [
+            ),
+            $ptr = array(
                 'host' => 'example.com',
                 'class' => 'IN',
                 'ttl' => 1,
                 'type' => 'PTR',
                 'ip' => '2.3.4.5',
-            ],
-        ];
+            ),
+        );
 
         $this->assertFalse(DnsMock::dns_get_record('foobar.com'));
         $this->assertSame($records, DnsMock::dns_get_record('example.com'));
         $this->assertSame($records, DnsMock::dns_get_record('example.com', DNS_ALL));
         $this->assertSame($records, DnsMock::dns_get_record('example.com', DNS_A | DNS_PTR));
-        $this->assertSame([$ptr], DnsMock::dns_get_record('example.com', DNS_PTR));
+        $this->assertSame(array($ptr), DnsMock::dns_get_record('example.com', DNS_PTR));
     }
 }
diff --git a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
index ff6ce8066e9c..2e23aa890054 100755
--- a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
+++ b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
@@ -85,7 +85,7 @@ if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit") || md5_file(__
     $prevRoot = getenv('COMPOSER_ROOT_VERSION');
     putenv("COMPOSER_ROOT_VERSION=$PHPUNIT_VERSION.99");
     // --no-suggest is not in the list to keep compat with composer 1.0, which is shipped with Ubuntu 16.04LTS
-    $exit = proc_close(proc_open("$COMPOSER install --no-dev --prefer-dist --no-progress --ansi", [], $p, getcwd(), null, ['bypass_shell' => true]));
+    $exit = proc_close(proc_open("$COMPOSER install --no-dev --prefer-dist --no-progress --ansi", array(), $p, getcwd(), null, array('bypass_shell' => true)));
     putenv('COMPOSER_ROOT_VERSION'.(false !== $prevRoot ? '='.$prevRoot : ''));
     if ($exit) {
         exit($exit);
@@ -118,9 +118,9 @@ EOPHP
 }
 
 global $argv, $argc;
-$argv = isset($_SERVER['argv']) ? $_SERVER['argv'] : [];
+$argv = isset($_SERVER['argv']) ? $_SERVER['argv'] : array();
 $argc = isset($_SERVER['argc']) ? $_SERVER['argc'] : 0;
-$components = [];
+$components = array();
 $cmd = array_map('escapeshellarg', $argv);
 $exit = 0;
 
@@ -155,7 +155,7 @@ if ('\\' === DIRECTORY_SEPARATOR) {
 
 if ($components) {
     $skippedTests = isset($_SERVER['SYMFONY_PHPUNIT_SKIPPED_TESTS']) ? $_SERVER['SYMFONY_PHPUNIT_SKIPPED_TESTS'] : false;
-    $runningProcs = [];
+    $runningProcs = array();
 
     foreach ($components as $component) {
         // Run phpunit tests in parallel
@@ -166,7 +166,7 @@ if ($components) {
 
         $c = escapeshellarg($component);
 
-        if ($proc = proc_open(sprintf($cmd, $c, " > $c/phpunit.stdout 2> $c/phpunit.stderr"), [], $pipes)) {
+        if ($proc = proc_open(sprintf($cmd, $c, " > $c/phpunit.stdout 2> $c/phpunit.stderr"), array(), $pipes)) {
             $runningProcs[$component] = $proc;
         } else {
             $exit = 1;
@@ -176,7 +176,7 @@ if ($components) {
 
     while ($runningProcs) {
         usleep(300000);
-        $terminatedProcs = [];
+        $terminatedProcs = array();
         foreach ($runningProcs as $component => $proc) {
             $procStatus = proc_get_status($proc);
             if (!$procStatus['running']) {
@@ -187,7 +187,7 @@ if ($components) {
         }
 
         foreach ($terminatedProcs as $component => $procStatus) {
-            foreach (['out', 'err'] as $file) {
+            foreach (array('out', 'err') as $file) {
                 $file = "$component/phpunit.std$file";
                 readfile($file);
                 unlink($file);
@@ -197,7 +197,7 @@ if ($components) {
             // STATUS_STACK_BUFFER_OVERRUN (-1073740791/0xC0000409)
             // STATUS_ACCESS_VIOLATION (-1073741819/0xC0000005)
             // STATUS_HEAP_CORRUPTION (-1073740940/0xC0000374)
-            if ($procStatus && ('\\' !== DIRECTORY_SEPARATOR || !extension_loaded('apcu') || !filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN) || !in_array($procStatus, [-1073740791, -1073741819, -1073740940]))) {
+            if ($procStatus && ('\\' !== DIRECTORY_SEPARATOR || !extension_loaded('apcu') || !filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN) || !in_array($procStatus, array(-1073740791, -1073741819, -1073740940)))) {
                 $exit = $procStatus;
                 echo "\033[41mKO\033[0m $component\n\n";
             } else {
@@ -209,7 +209,7 @@ if ($components) {
     if (!class_exists('SymfonyBlacklistSimplePhpunit', false)) {
         class SymfonyBlacklistSimplePhpunit {}
     }
-    array_splice($argv, 1, 0, ['--colors=always']);
+    array_splice($argv, 1, 0, array('--colors=always'));
     $_SERVER['argv'] = $argv;
     $_SERVER['argc'] = ++$argc;
     include "$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit";

From 542e9e29b900c5b81491064b9cdca1a96ed767aa Mon Sep 17 00:00:00 2001
From: renanbr <renan@renandelima.com>
Date: Wed, 30 Jan 2019 16:28:03 +0100
Subject: [PATCH 097/103] fix serialization workaround in
 CustomUserMessageAuthenticationException

---
 ...stomUserMessageAuthenticationException.php |  2 +-
 ...UserMessageAuthenticationExceptionTest.php | 29 +++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
index 1faf6d9d5341..ed9fb1bd339b 100644
--- a/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
+++ b/src/Symfony/Component/Security/Core/Exception/CustomUserMessageAuthenticationException.php
@@ -60,7 +60,7 @@ public function getMessageData()
      */
     public function serialize()
     {
-        return serialize([parent::serialize(true), $this->messageKey, $this->messageData]);
+        $serialized = [parent::serialize(true), $this->messageKey, $this->messageData];
 
         return $this->doSerialize($serialized, \func_num_args() ? \func_get_arg(0) : null);
     }
diff --git a/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php b/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
index d69d3bffcb54..32c76a452f70 100644
--- a/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Exception/CustomUserMessageAuthenticationExceptionTest.php
@@ -15,6 +15,21 @@
 use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
 use Symfony\Component\Security\Core\Exception\CustomUserMessageAuthenticationException;
 
+class ChildCustomUserMessageAuthenticationException extends CustomUserMessageAuthenticationException
+{
+    public function serialize()
+    {
+        return serialize([$this->childMember, parent::serialize()]);
+    }
+
+    public function unserialize($str)
+    {
+        list($this->childMember, $parentData) = unserialize($str);
+
+        parent::unserialize($parentData);
+    }
+}
+
 class CustomUserMessageAuthenticationExceptionTest extends TestCase
 {
     public function testConstructWithSAfeMessage()
@@ -39,4 +54,18 @@ public function testSharedSerializedData()
         $this->assertEquals($token, $processed->getMessageData()['token']);
         $this->assertSame($processed->getToken(), $processed->getMessageData()['token']);
     }
+
+    public function testSharedSerializedDataFromChild()
+    {
+        $token = new AnonymousToken('foo', 'bar');
+
+        $exception = new ChildCustomUserMessageAuthenticationException();
+        $exception->childMember = $token;
+        $exception->setToken($token);
+
+        $processed = unserialize(serialize($exception));
+        $this->assertEquals($token, $processed->childMember);
+        $this->assertEquals($token, $processed->getToken());
+        $this->assertSame($processed->getToken(), $processed->childMember);
+    }
 }

From ed96830893ca5c7052cf4aee08591a9ec4b0c571 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Wed, 30 Jan 2019 18:15:16 +0100
Subject: [PATCH 098/103] [DI] Fix dumping Doctrine-like service graphs

---
 .../Compiler/InlineServiceDefinitionsPass.php                 | 4 ----
 .../Component/DependencyInjection/Dumper/PhpDumper.php        | 1 +
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php b/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
index ee3d7e526253..326ee19323ca 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
@@ -148,10 +148,6 @@ private function isInlineableDefinition($id, Definition $definition, ServiceRefe
             return false;
         }
 
-        if ($isReferencedByConstructor && $this->container->getDefinition($ids[0])->isLazy() && ($definition->getProperties() || $definition->getMethodCalls() || $definition->getConfigurator())) {
-            return false;
-        }
-
         return $this->container->getDefinition($ids[0])->isShared();
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index dc14f967f9da..0a1385ecc4a0 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -661,6 +661,7 @@ private function addService($id, Definition $definition, &$file = null)
         $autowired = $definition->isAutowired() ? ' autowired' : '';
 
         if ($definition->isLazy()) {
+            unset($this->circularReferences[$id]);
             $lazyInitialization = '$lazyLoad = true';
         } else {
             $lazyInitialization = '';

From e8cdda3cf2b8bb427148b829bb5a80a5165a23a4 Mon Sep 17 00:00:00 2001
From: Tarjei Huse <tarjei.huse@gmail.com>
Date: Wed, 30 Jan 2019 14:15:45 +0100
Subject: [PATCH 099/103] Fix typo in translation

---
 .../Security/Core/Resources/translations/security.nb.xlf        | 2 +-
 .../Security/Core/Resources/translations/security.no.xlf        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Security/Core/Resources/translations/security.nb.xlf b/src/Symfony/Component/Security/Core/Resources/translations/security.nb.xlf
index 363591697147..a01db397708f 100644
--- a/src/Symfony/Component/Security/Core/Resources/translations/security.nb.xlf
+++ b/src/Symfony/Component/Security/Core/Resources/translations/security.nb.xlf
@@ -16,7 +16,7 @@
             </trans-unit>
             <trans-unit id="4">
                 <source>Invalid credentials.</source>
-                <target>Ugyldig påloggingsinformasjonen.</target>
+                <target>Ugyldig påloggingsinformasjon.</target>
             </trans-unit>
             <trans-unit id="5">
                 <source>Cookie has already been used by someone else.</source>
diff --git a/src/Symfony/Component/Security/Core/Resources/translations/security.no.xlf b/src/Symfony/Component/Security/Core/Resources/translations/security.no.xlf
index 363591697147..a01db397708f 100644
--- a/src/Symfony/Component/Security/Core/Resources/translations/security.no.xlf
+++ b/src/Symfony/Component/Security/Core/Resources/translations/security.no.xlf
@@ -16,7 +16,7 @@
             </trans-unit>
             <trans-unit id="4">
                 <source>Invalid credentials.</source>
-                <target>Ugyldig påloggingsinformasjonen.</target>
+                <target>Ugyldig påloggingsinformasjon.</target>
             </trans-unit>
             <trans-unit id="5">
                 <source>Cookie has already been used by someone else.</source>

From 14b9fa5234efab109299c6eeabd1df04a3fb2728 Mon Sep 17 00:00:00 2001
From: Ben Davies <ben.davies@gmail.com>
Date: Thu, 31 Jan 2019 15:08:08 +0000
Subject: [PATCH 100/103] fix pruning pdo cache for vendors that throw on
 execute

---
 src/Symfony/Component/Cache/Traits/PdoTrait.php | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Cache/Traits/PdoTrait.php b/src/Symfony/Component/Cache/Traits/PdoTrait.php
index af1a7b22f628..ec34e72fb530 100644
--- a/src/Symfony/Component/Cache/Traits/PdoTrait.php
+++ b/src/Symfony/Component/Cache/Traits/PdoTrait.php
@@ -165,8 +165,11 @@ public function prune()
         if ('' !== $this->namespace) {
             $delete->bindValue(':namespace', sprintf('%s%%', $this->namespace), \PDO::PARAM_STR);
         }
-
-        return $delete->execute();
+        try {
+            return $delete->execute();
+        } catch (TableNotFoundException $e) {
+            return true;
+        }
     }
 
     /**

From 8d171f406b1577bbfdceccb620d9591ecbacf64d Mon Sep 17 00:00:00 2001
From: Tom Van Looy <tom@ctors.net>
Date: Fri, 1 Feb 2019 12:54:57 +0100
Subject: [PATCH 101/103] Use system wide memcached.so

---
 .travis.yml | 26 +-------------------------
 1 file changed, 1 insertion(+), 25 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 5d1ac461e6da..b05db83f768e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -156,6 +156,7 @@ before_install:
           echo hhvm.jit = 0 >> $INI
           echo apc.enable_cli = 1 >> $INI
           echo extension = redis.so >> $INI
+          echo extension = memcached.so >> $INI
           if [[ $PHP = 5.* ]]; then
               echo extension = memcache.so >> $INI
               echo extension = mongo.so >> $INI
@@ -187,31 +188,6 @@ before_install:
               tfold ext.apcu tpecl apcu-5.1.16 apcu.so $INI
               tfold ext.mongodb tpecl mongodb-1.6.0alpha1 mongodb.so $INI
           fi
-
-          if [[ $PHP == 7.3 ]]; then
-              # System libmemcached is missing sasl
-              LIBMEMCACHED_VERSION=1.0.18
-              wget "https://launchpad.net/libmemcached/1.0/${LIBMEMCACHED_VERSION}/+download/libmemcached-${LIBMEMCACHED_VERSION}.tar.gz" -O libmemcached-${LIBMEMCACHED_VERSION}.tar.gz
-              tar xvfz libmemcached-${LIBMEMCACHED_VERSION}.tar.gz
-              cd "libmemcached-${LIBMEMCACHED_VERSION}"
-              mkdir -p /opt/libmemcached/${LIBMEMCACHED_VERSION}
-              ./configure --prefix="/opt/libmemcached/${LIBMEMCACHED_VERSION}" LDFLAGS="-lpthread"
-              make
-              make install
-              cd -
-
-              EXTMEMCACHED_VERSION=3.1.3
-              wget https://pecl.php.net/get/memcached-${EXTMEMCACHED_VERSION}.tgz
-              tar xzvf memcached-${EXTMEMCACHED_VERSION}.tgz
-              cd memcached-${EXTMEMCACHED_VERSION}
-              phpize
-              ./configure --with-libmemcached-dir=/opt/libmemcached/${LIBMEMCACHED_VERSION}
-              make
-              sudo make install
-              cd -
-          fi
-
-          echo extension = memcached.so >> $INI
       done
 
     - |

From 40204a42485bf9bb3343229393d3bb50aa2398c3 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 3 Feb 2019 13:47:28 +0100
Subject: [PATCH 102/103] updated CHANGELOG for 4.2.3

---
 CHANGELOG-4.2.md | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/CHANGELOG-4.2.md b/CHANGELOG-4.2.md
index 1c2372bb2ead..96994ff62024 100644
--- a/CHANGELOG-4.2.md
+++ b/CHANGELOG-4.2.md
@@ -7,6 +7,40 @@ in 4.2 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v4.2.0...v4.2.1
 
+* 4.2.3 (2019-02-03)
+
+ * bug #30050 [Cache] fix pruning pdo cache for vendors that throw on execute (bendavies)
+ * bug #30046 [DI] Fix dumping Doctrine-like service graphs (nicolas-grekas)
+ * bug #30028 [Form] fix some docblocks and type checks (xabbuh)
+ * bug #30037 Disable Twig in the profiler menu when Twig is not used (javiereguiluz)
+ * bug #30026 [VarDumper] dont implement Serializable in Stub (nicolas-grekas)
+ * bug #30034 [Config] ensure moving away from Serializable wont break cache:clear (nicolas-grekas)
+ * bug #29532 [Messenger] fixed RabbitMQ arguments not passed as integer values (thePanz)
+ * bug #30013 [Routing] dont redirect routes with greedy trailing vars with no explicit slash (nicolas-grekas)
+ * bug #30006 [Security] don't do nested calls to serialize() (nicolas-grekas, Renan)
+ * bug #30007 [FrameworkBundle] Support use of hyphen in asset package name (damaya, XuruDragon)
+ * bug #30004 Fix format strings for deprecation notices (TysonAndre)
+ * bug #29984 [VarDumper] Fixed search bar (ro0NL)
+ * bug #29764 [HttpFoundation] Check file exists before unlink (adam-mospan)
+ * bug #29783 [HttpFoundation] MemcachedSessionHandler::close() must close connection (grachevko)
+ * bug #29794 Always pass $key to NullAdapter->createCacheItem (TysonAndre)
+ * bug #29844 [Console] Fixed #29835: ConfirmationQuestion with default true for answer '0' (mrthehud)
+ * bug #29869 [Debug][ErrorHandler] Preserve our error handler when a logger sets another one (fancyweb)
+ * bug #29900 [Cache] PDO-based cache pool table autocreation does not work (errogaht)
+ * bug #29926 [Form] Changed UrlType input type to text when default_protocol is not null (MatTheCat)
+ * bug #29961 [Translation] Concatenated translation messages (Stadly)
+ * bug #29847 [Cache] fix used variable name (xabbuh)
+ * bug #29920 [Debug][DebugClassLoader] Match more cases for final, deprecated and internal classes / methods extends (fancyweb)
+ * bug #29922 Avoid dots in generated class names (derrabus)
+ * bug #29863 [Security] Do not mix password_*() API with libsodium one (chalasr)
+ * bug #29894 [DependencyInjection] the string "0" is a valid service identifier (xabbuh)
+ * bug #29885 Update MimeType extensions (fabpot)
+ * bug #29875 [TwigBridge] fix compatibility with Twig >= 2.6.1 (xabbuh)
+ * bug #29873 [Debug] remove return type hint for PHP 5 compatibility (xabbuh)
+ * bug #29837 Fix SwiftMailerHandler to support Monolog's latest reset functionality (Seldaek)
+ * bug #29853 Revert "bug #29597 [DI] fix reporting bindings on overriden services as unused" (mmarynich)
+ * bug #29833 [DebugClassLoader] expose proxyfied findFile() method (fancyweb)
+
 * 4.2.2 (2019-01-06)
 
  * bug #29494 [HttpFoundation] Fix request uri when it starts with double slashes (alquerci)

From c41a86937970b822cf3bf25814077e79f77b239f Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Sun, 3 Feb 2019 13:47:33 +0100
Subject: [PATCH 103/103] updated VERSION for 4.2.3

---
 src/Symfony/Component/HttpKernel/Kernel.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 981aa0f39c2e..c5e351ca3a20 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -73,12 +73,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '4.2.3-DEV';
+    const VERSION = '4.2.3';
     const VERSION_ID = 40203;
     const MAJOR_VERSION = 4;
     const MINOR_VERSION = 2;
     const RELEASE_VERSION = 3;
-    const EXTRA_VERSION = 'DEV';
+    const EXTRA_VERSION = '';
 
     const END_OF_MAINTENANCE = '07/2019';
     const END_OF_LIFE = '01/2020';

0